From 12744a0b384573ded370b5c743a28105624c3435 Mon Sep 17 00:00:00 2001
From: Remy Chibois <remy@chybz.net>
Date: Wed, 3 May 2023 15:32:06 +0200
Subject: [PATCH 01/26] chore: initial cpp structure and implementation

---
 cpp/Makefile                                  | 34 ++++++++++
 jsonschema/scripts/codegen.rb                 | 27 ++++++++
 jsonschema/scripts/templates/cpp.enum.hpp.erb | 21 ++++++
 jsonschema/scripts/templates/cpp.hpp.erb      | 65 +++++++++++++++++++
 4 files changed, 147 insertions(+)
 create mode 100644 cpp/Makefile
 create mode 100644 jsonschema/scripts/templates/cpp.enum.hpp.erb
 create mode 100644 jsonschema/scripts/templates/cpp.hpp.erb

diff --git a/cpp/Makefile b/cpp/Makefile
new file mode 100644
index 00000000..eb9b214d
--- /dev/null
+++ b/cpp/Makefile
@@ -0,0 +1,34 @@
+schemas = $(shell find ../jsonschema -name "*.json")
+
+.DEFAULT_GOAL = help
+
+help: ## Show this help
+	@awk 'BEGIN {FS = ":.*##"; printf "\nUsage:\n  make <target>\n\nWhere <target> is one of:\n"} /^[$$()% a-zA-Z_-]+:.*?##/ { printf "  \033[36m%-15s\033[0m %s\n", $$1, $$2 } /^##@/ { printf "\n\033[1m%s\033[0m\n", substr($$0, 5) } ' $(MAKEFILE_LIST)
+
+generate: require .generate-messages ## Generate C++ code based on the schemas found in ../jsonschema and using the scripts in ../jsonschema/scripts for the generation
+
+require: ## Check requirements for the code generation (ruby, csplit and tail are required)
+	@ruby --version >/dev/null 2>&1 || (echo "ERROR: ruby is required."; exit 1)
+	@csplit --version >/dev/null 2>&1 || (echo "ERROR: csplit is required."; exit 1)
+	@tail --version >/dev/null 2>&1 || (echo "ERROR: tail is required."; exit 1)
+
+clean: ## Remove automatically generated files and related artifacts
+	rm -rf include/cucumber/messages
+
+.generate-messages: $(schemas) ../jsonschema/scripts/codegen.rb ../jsonschema/scripts/templates/cpp.hpp.erb ../jsonschema/scripts/templates/cpp.enum.hpp.erb
+	ruby ../jsonschema/scripts/codegen.rb Cpp ../jsonschema cpp.hpp.erb > Generated.hpp.tmp
+	ruby ../jsonschema/scripts/codegen.rb Cpp ../jsonschema cpp.enum.hpp.erb >> Generated.hpp.tmp
+	csplit --quiet --prefix=Generated --suffix-format=%02d.hpp.tmp --elide-empty-files Generated.hpp.tmp /^[A-Za-z_.]*[.][ch]pp/ {*}
+	rm Generated.hpp.tmp
+	rm -rf include/cucumber/messages src/cucumber/messages
+	mkdir -p include/cucumber/messages src/cucumber/messages
+
+	for file in Generated**; do \
+	    F=$$(head -n 1 $$file | tr -d '\r\n'); \
+	    if [ -n "$$F" ]; then \
+	    	tail -n +2 $$file > include/cucumber/messages/$$F; \
+	    fi; \
+	    rm $$file; \
+	done
+
+	mv include/cucumber/messages/*.cpp src/cucumber/messages || true
diff --git a/jsonschema/scripts/codegen.rb b/jsonschema/scripts/codegen.rb
index bf144575..2b0c558c 100644
--- a/jsonschema/scripts/codegen.rb
+++ b/jsonschema/scripts/codegen.rb
@@ -160,6 +160,33 @@ def array_type_for(type_name)
   end
 end
 
+class Cpp < Codegen
+  def initialize(paths)
+    language_type_by_schema_type = {
+      'integer' => 'std::size_t',
+      'string' => 'std::string',
+      'boolean' => 'bool',
+    }
+
+    super(paths, language_type_by_schema_type)
+  end
+
+  def array_type_for(type_name)
+    "std::vector<#{type_name}>"
+  end
+
+  def format_description(raw_description, indent_string: "")
+    return '' if raw_description.nil?
+
+    raw_description
+      .split("\n")
+      .map { |line| line.strip() }
+      .filter { |line| line != '*' }
+      .map { |line| "// #{line}".rstrip() }
+      .join("\n#{indent_string}")
+  end
+end
+
 class Java < Codegen
   def initialize(paths)
     language_type_by_schema_type = {
diff --git a/jsonschema/scripts/templates/cpp.enum.hpp.erb b/jsonschema/scripts/templates/cpp.enum.hpp.erb
new file mode 100644
index 00000000..72c9a100
--- /dev/null
+++ b/jsonschema/scripts/templates/cpp.enum.hpp.erb
@@ -0,0 +1,21 @@
+<% @enums.each do |enum| -%>
+<% ename = underscore(enum[:name]) %>
+<%= ename %>.hpp
+#pragma once
+
+#include <unordered_map>
+#include <string_view>
+
+namespace cucumber::messages {
+
+enum class <%= ename %>
+<%- enum[:values].each_with_index do |value, index| -%>
+  <%= enum_constant(value) %> = '<%= value %>'
+<%- end -%>
+end
+
+using <%= ename %>_map = std::unordered_map<ename, std::string_view>;
+
+}
+
+<%- end -%>
diff --git a/jsonschema/scripts/templates/cpp.hpp.erb b/jsonschema/scripts/templates/cpp.hpp.erb
new file mode 100644
index 00000000..2f483355
--- /dev/null
+++ b/jsonschema/scripts/templates/cpp.hpp.erb
@@ -0,0 +1,65 @@
+<%- @schemas.each do |key, schema| -%>
+<% myclass = underscore(class_name(key)) %>
+<%= myclass %>.hpp
+#pragma once
+
+#include <cucumber/message.hpp>
+<%-
+    incs = []
+    schema['properties'].each do |property_name, property|
+        type = underscore(type_for(class_name(key), property_name, property))
+        incs.append(type) if !type.start_with?("std::")
+    end
+
+    if incs.length > 0
+-%>
+
+    <%- incs.each do |type| -%>
+#include <cucumber/messages/<%= type %>.hpp>
+    <%- end -%>
+<%- end -%>
+
+namespace cucumber::messages {
+
+//
+// Represents the <%= class_name(key) %> message in Cucumber's message protocol
+// @see <a href=https://github.com/cucumber/messages>Github - Cucumber - Messages</a>
+<%- if not (schema['description'] || []).empty? -%>
+//
+<%= format_description(schema['description'], indent_string: '') %>
+<%- end -%>
+//
+// Generated code
+
+struct <%= myclass %> : cucumber::message
+{
+  <%- schema['properties'].each do |property_name, property| -%>
+    <%= underscore(type_for(class_name(key), property_name, property)) -%> <%= underscore(property_name) %>;
+  <%- end -%>
+
+    std::string to_string() const override;
+};
+
+}
+<%= myclass %>.cpp
+#include <sstream>
+
+#include <cucumber/messages/<%= myclass %>.hpp>
+
+namespace cucumber::messages {
+
+std::string
+<%= myclass %>::to_string() const
+{
+    std::ostringstream oss;
+
+    oss
+    <%- schema['properties'].each_with_index do |(property_name, property), index| -%>
+        << "<%= index == 0 ? '' : ', '%><%= underscore(property_name) %>=" << <%= underscore(property_name) %>
+    <%- end -%>
+        ;
+
+    return oss.str();
+}
+
+}<%- end -%>

From ae1cd045812b16cf8b5fee81dcf7b8e9c5681983 Mon Sep 17 00:00:00 2001
From: Remy Chibois <remy@chybz.net>
Date: Wed, 3 May 2023 18:12:55 +0200
Subject: [PATCH 02/26] chore: compile ok

---
 cpp/.gitignore                                |   3 +
 cpp/CMakeLists.txt                            |  28 ++++
 cpp/Makefile                                  |  14 +-
 cpp/include/cucumber/message.hpp              |  43 ++++++
 cpp/src/CMakeLists.txt                        |   1 +
 cpp/src/lib/CMakeLists.txt                    |   1 +
 cpp/src/lib/cucumber-messages/CMakeLists.txt  | 142 ++++++++++++++++++
 .../lib/cucumber-messages/cucumber/utils.hpp  |  26 ++++
 jsonschema/scripts/templates/cpp.enum.hpp.erb |  45 +++++-
 jsonschema/scripts/templates/cpp.hpp.erb      |  29 +++-
 10 files changed, 319 insertions(+), 13 deletions(-)
 create mode 100644 cpp/.gitignore
 create mode 100644 cpp/CMakeLists.txt
 create mode 100644 cpp/include/cucumber/message.hpp
 create mode 100644 cpp/src/CMakeLists.txt
 create mode 100644 cpp/src/lib/CMakeLists.txt
 create mode 100644 cpp/src/lib/cucumber-messages/CMakeLists.txt
 create mode 100644 cpp/src/lib/cucumber-messages/cucumber/utils.hpp

diff --git a/cpp/.gitignore b/cpp/.gitignore
new file mode 100644
index 00000000..8de76d6e
--- /dev/null
+++ b/cpp/.gitignore
@@ -0,0 +1,3 @@
+build/
+include/cucumber/messages/
+src/lib/cucumber-messages/cucumber/messages/
diff --git a/cpp/CMakeLists.txt b/cpp/CMakeLists.txt
new file mode 100644
index 00000000..9839a861
--- /dev/null
+++ b/cpp/CMakeLists.txt
@@ -0,0 +1,28 @@
+cmake_minimum_required(VERSION 3.12 FATAL_ERROR)
+
+project(cucumber-messages VERSION 1.0.0 LANGUAGES C CXX)
+
+include(GNUInstallDirs)
+
+set(CMAKE_CXX_STANDARD 20)
+set(CMAKE_CXX_STANDARD_REQUIRED ON)
+set(CMAKE_CXX_EXTENSIONS OFF)
+set(CMAKE_POSITION_INDEPENDENT_CODE ON)
+
+add_subdirectory(src)
+
+install(
+    TARGETS
+        cucumber-messages_library
+    EXPORT cucumber-messages-config
+    RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
+    LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
+    ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
+)
+
+install(
+    EXPORT cucumber-messages-config
+    FILE cucumber-messages-config.cmake
+    NAMESPACE cucumber::
+    DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/cucumber-messages
+)
diff --git a/cpp/Makefile b/cpp/Makefile
index eb9b214d..f3a28613 100644
--- a/cpp/Makefile
+++ b/cpp/Makefile
@@ -2,6 +2,10 @@ schemas = $(shell find ../jsonschema -name "*.json")
 
 .DEFAULT_GOAL = help
 
+INC_DIR = include/cucumber/messages
+LIB_DIR = src/lib/cucumber-messages/cucumber/messages
+GEN_DIRS = $(INC_DIR) $(LIB_DIR)
+
 help: ## Show this help
 	@awk 'BEGIN {FS = ":.*##"; printf "\nUsage:\n  make <target>\n\nWhere <target> is one of:\n"} /^[$$()% a-zA-Z_-]+:.*?##/ { printf "  \033[36m%-15s\033[0m %s\n", $$1, $$2 } /^##@/ { printf "\n\033[1m%s\033[0m\n", substr($$0, 5) } ' $(MAKEFILE_LIST)
 
@@ -13,22 +17,22 @@ require: ## Check requirements for the code generation (ruby, csplit and tail ar
 	@tail --version >/dev/null 2>&1 || (echo "ERROR: tail is required."; exit 1)
 
 clean: ## Remove automatically generated files and related artifacts
-	rm -rf include/cucumber/messages
+	rm -rf $(GEN_DIRS)
 
 .generate-messages: $(schemas) ../jsonschema/scripts/codegen.rb ../jsonschema/scripts/templates/cpp.hpp.erb ../jsonschema/scripts/templates/cpp.enum.hpp.erb
 	ruby ../jsonschema/scripts/codegen.rb Cpp ../jsonschema cpp.hpp.erb > Generated.hpp.tmp
 	ruby ../jsonschema/scripts/codegen.rb Cpp ../jsonschema cpp.enum.hpp.erb >> Generated.hpp.tmp
 	csplit --quiet --prefix=Generated --suffix-format=%02d.hpp.tmp --elide-empty-files Generated.hpp.tmp /^[A-Za-z_.]*[.][ch]pp/ {*}
 	rm Generated.hpp.tmp
-	rm -rf include/cucumber/messages src/cucumber/messages
-	mkdir -p include/cucumber/messages src/cucumber/messages
+	rm -rf $(GEN_DIRS)
+	mkdir -p $(GEN_DIRS)
 
 	for file in Generated**; do \
 	    F=$$(head -n 1 $$file | tr -d '\r\n'); \
 	    if [ -n "$$F" ]; then \
-	    	tail -n +2 $$file > include/cucumber/messages/$$F; \
+	    	tail -n +2 $$file > $(INC_DIR)/$$F; \
 	    fi; \
 	    rm $$file; \
 	done
 
-	mv include/cucumber/messages/*.cpp src/cucumber/messages || true
+	mv $(INC_DIR)/*.cpp $(LIB_DIR)/ || true
diff --git a/cpp/include/cucumber/message.hpp b/cpp/include/cucumber/message.hpp
new file mode 100644
index 00000000..a415a4e0
--- /dev/null
+++ b/cpp/include/cucumber/message.hpp
@@ -0,0 +1,43 @@
+#pragma once
+
+#include <type_traits>
+#include <vector>
+
+namespace cucumber {
+
+struct message
+{
+    virtual std::string to_string() const = 0;
+};
+
+template <
+    typename Msg,
+    typename = std::enable_if_t<std::is_base_of_v<message, Msg>>
+>
+std::ostream&
+operator<<(std::ostream& os, const Msg& msg)
+{
+    os << msg.to_string();
+
+    return os;
+}
+
+template <
+    typename Msg,
+    typename = std::enable_if_t<std::is_base_of_v<message, Msg>>
+>
+std::ostream&
+operator<<(std::ostream& os, const std::vector<Msg>& msgs)
+{
+    os << '[';
+
+    for (std::size_t i = 0; i < msgs.size(); ++i) {
+        os << (i > 0 ? ", " : "") << msgs[i];
+    }
+
+    os << ']';
+
+    return os;
+}
+
+}
diff --git a/cpp/src/CMakeLists.txt b/cpp/src/CMakeLists.txt
new file mode 100644
index 00000000..3ea7a419
--- /dev/null
+++ b/cpp/src/CMakeLists.txt
@@ -0,0 +1 @@
+add_subdirectory(lib)
diff --git a/cpp/src/lib/CMakeLists.txt b/cpp/src/lib/CMakeLists.txt
new file mode 100644
index 00000000..63df6a2a
--- /dev/null
+++ b/cpp/src/lib/CMakeLists.txt
@@ -0,0 +1 @@
+add_subdirectory(cucumber-messages)
diff --git a/cpp/src/lib/cucumber-messages/CMakeLists.txt b/cpp/src/lib/cucumber-messages/CMakeLists.txt
new file mode 100644
index 00000000..152a58b6
--- /dev/null
+++ b/cpp/src/lib/cucumber-messages/CMakeLists.txt
@@ -0,0 +1,142 @@
+add_library(cucumber-messages_library)
+add_library(cucumber::messages ALIAS cucumber-messages_library)
+
+set(INC_DIR "${CMAKE_SOURCE_DIR}/include")
+
+target_sources(
+    cucumber-messages_library
+    PRIVATE
+        ${INC_DIR}/cucumber/messages/attachment_content_encoding.hpp
+        ${INC_DIR}/cucumber/messages/attachment.hpp
+        ${INC_DIR}/cucumber/messages/background.hpp
+        ${INC_DIR}/cucumber/messages/ci.hpp
+        ${INC_DIR}/cucumber/messages/comment.hpp
+        ${INC_DIR}/cucumber/messages/data_table.hpp
+        ${INC_DIR}/cucumber/messages/doc_string.hpp
+        ${INC_DIR}/cucumber/messages/duration.hpp
+        ${INC_DIR}/cucumber/messages/envelope.hpp
+        ${INC_DIR}/cucumber/messages/examples.hpp
+        ${INC_DIR}/cucumber/messages/exception.hpp
+        ${INC_DIR}/cucumber/messages/feature_child.hpp
+        ${INC_DIR}/cucumber/messages/feature.hpp
+        ${INC_DIR}/cucumber/messages/gherkin_document.hpp
+        ${INC_DIR}/cucumber/messages/git.hpp
+        ${INC_DIR}/cucumber/messages/group.hpp
+        ${INC_DIR}/cucumber/messages/hook.hpp
+        ${INC_DIR}/cucumber/messages/java_method.hpp
+        ${INC_DIR}/cucumber/messages/java_stack_trace_element.hpp
+        ${INC_DIR}/cucumber/messages/location.hpp
+        ${INC_DIR}/cucumber/messages/meta.hpp
+        ${INC_DIR}/cucumber/messages/parameter_type.hpp
+        ${INC_DIR}/cucumber/messages/parse_error.hpp
+        ${INC_DIR}/cucumber/messages/pickle_doc_string.hpp
+        ${INC_DIR}/cucumber/messages/pickle.hpp
+        ${INC_DIR}/cucumber/messages/pickle_step_argument.hpp
+        ${INC_DIR}/cucumber/messages/pickle_step.hpp
+        ${INC_DIR}/cucumber/messages/pickle_step_type.hpp
+        ${INC_DIR}/cucumber/messages/pickle_table_cell.hpp
+        ${INC_DIR}/cucumber/messages/pickle_table.hpp
+        ${INC_DIR}/cucumber/messages/pickle_table_row.hpp
+        ${INC_DIR}/cucumber/messages/pickle_tag.hpp
+        ${INC_DIR}/cucumber/messages/product.hpp
+        ${INC_DIR}/cucumber/messages/rule_child.hpp
+        ${INC_DIR}/cucumber/messages/rule.hpp
+        ${INC_DIR}/cucumber/messages/scenario.hpp
+        ${INC_DIR}/cucumber/messages/source.hpp
+        ${INC_DIR}/cucumber/messages/source_media_type.hpp
+        ${INC_DIR}/cucumber/messages/source_reference.hpp
+        ${INC_DIR}/cucumber/messages/step_definition.hpp
+        ${INC_DIR}/cucumber/messages/step_definition_pattern.hpp
+        ${INC_DIR}/cucumber/messages/step_definition_pattern_type.hpp
+        ${INC_DIR}/cucumber/messages/step.hpp
+        ${INC_DIR}/cucumber/messages/step_keyword_type.hpp
+        ${INC_DIR}/cucumber/messages/step_match_argument.hpp
+        ${INC_DIR}/cucumber/messages/step_match_arguments_list.hpp
+        ${INC_DIR}/cucumber/messages/table_cell.hpp
+        ${INC_DIR}/cucumber/messages/table_row.hpp
+        ${INC_DIR}/cucumber/messages/tag.hpp
+        ${INC_DIR}/cucumber/messages/test_case_finished.hpp
+        ${INC_DIR}/cucumber/messages/test_case.hpp
+        ${INC_DIR}/cucumber/messages/test_case_started.hpp
+        ${INC_DIR}/cucumber/messages/test_run_finished.hpp
+        ${INC_DIR}/cucumber/messages/test_run_started.hpp
+        ${INC_DIR}/cucumber/messages/test_step_finished.hpp
+        ${INC_DIR}/cucumber/messages/test_step.hpp
+        ${INC_DIR}/cucumber/messages/test_step_result.hpp
+        ${INC_DIR}/cucumber/messages/test_step_result_status.hpp
+        ${INC_DIR}/cucumber/messages/test_step_started.hpp
+        ${INC_DIR}/cucumber/messages/timestamp.hpp
+        ${INC_DIR}/cucumber/messages/undefined_parameter_type.hpp
+        ${CMAKE_CURRENT_SOURCE_DIR}/cucumber/utils.hpp
+        ${CMAKE_CURRENT_SOURCE_DIR}/cucumber/messages/attachment.cpp
+        ${CMAKE_CURRENT_SOURCE_DIR}/cucumber/messages/background.cpp
+        ${CMAKE_CURRENT_SOURCE_DIR}/cucumber/messages/ci.cpp
+        ${CMAKE_CURRENT_SOURCE_DIR}/cucumber/messages/comment.cpp
+        ${CMAKE_CURRENT_SOURCE_DIR}/cucumber/messages/data_table.cpp
+        ${CMAKE_CURRENT_SOURCE_DIR}/cucumber/messages/doc_string.cpp
+        ${CMAKE_CURRENT_SOURCE_DIR}/cucumber/messages/duration.cpp
+        ${CMAKE_CURRENT_SOURCE_DIR}/cucumber/messages/envelope.cpp
+        ${CMAKE_CURRENT_SOURCE_DIR}/cucumber/messages/examples.cpp
+        ${CMAKE_CURRENT_SOURCE_DIR}/cucumber/messages/exception.cpp
+        ${CMAKE_CURRENT_SOURCE_DIR}/cucumber/messages/feature_child.cpp
+        ${CMAKE_CURRENT_SOURCE_DIR}/cucumber/messages/feature.cpp
+        ${CMAKE_CURRENT_SOURCE_DIR}/cucumber/messages/gherkin_document.cpp
+        ${CMAKE_CURRENT_SOURCE_DIR}/cucumber/messages/git.cpp
+        ${CMAKE_CURRENT_SOURCE_DIR}/cucumber/messages/group.cpp
+        ${CMAKE_CURRENT_SOURCE_DIR}/cucumber/messages/hook.cpp
+        ${CMAKE_CURRENT_SOURCE_DIR}/cucumber/messages/java_method.cpp
+        ${CMAKE_CURRENT_SOURCE_DIR}/cucumber/messages/java_stack_trace_element.cpp
+        ${CMAKE_CURRENT_SOURCE_DIR}/cucumber/messages/location.cpp
+        ${CMAKE_CURRENT_SOURCE_DIR}/cucumber/messages/meta.cpp
+        ${CMAKE_CURRENT_SOURCE_DIR}/cucumber/messages/parameter_type.cpp
+        ${CMAKE_CURRENT_SOURCE_DIR}/cucumber/messages/parse_error.cpp
+        ${CMAKE_CURRENT_SOURCE_DIR}/cucumber/messages/pickle.cpp
+        ${CMAKE_CURRENT_SOURCE_DIR}/cucumber/messages/pickle_doc_string.cpp
+        ${CMAKE_CURRENT_SOURCE_DIR}/cucumber/messages/pickle_step_argument.cpp
+        ${CMAKE_CURRENT_SOURCE_DIR}/cucumber/messages/pickle_step.cpp
+        ${CMAKE_CURRENT_SOURCE_DIR}/cucumber/messages/pickle_table_cell.cpp
+        ${CMAKE_CURRENT_SOURCE_DIR}/cucumber/messages/pickle_table.cpp
+        ${CMAKE_CURRENT_SOURCE_DIR}/cucumber/messages/pickle_table_row.cpp
+        ${CMAKE_CURRENT_SOURCE_DIR}/cucumber/messages/pickle_tag.cpp
+        ${CMAKE_CURRENT_SOURCE_DIR}/cucumber/messages/product.cpp
+        ${CMAKE_CURRENT_SOURCE_DIR}/cucumber/messages/rule_child.cpp
+        ${CMAKE_CURRENT_SOURCE_DIR}/cucumber/messages/rule.cpp
+        ${CMAKE_CURRENT_SOURCE_DIR}/cucumber/messages/scenario.cpp
+        ${CMAKE_CURRENT_SOURCE_DIR}/cucumber/messages/source.cpp
+        ${CMAKE_CURRENT_SOURCE_DIR}/cucumber/messages/source_reference.cpp
+        ${CMAKE_CURRENT_SOURCE_DIR}/cucumber/messages/step.cpp
+        ${CMAKE_CURRENT_SOURCE_DIR}/cucumber/messages/step_definition.cpp
+        ${CMAKE_CURRENT_SOURCE_DIR}/cucumber/messages/step_definition_pattern.cpp
+        ${CMAKE_CURRENT_SOURCE_DIR}/cucumber/messages/step_match_argument.cpp
+        ${CMAKE_CURRENT_SOURCE_DIR}/cucumber/messages/step_match_arguments_list.cpp
+        ${CMAKE_CURRENT_SOURCE_DIR}/cucumber/messages/table_cell.cpp
+        ${CMAKE_CURRENT_SOURCE_DIR}/cucumber/messages/table_row.cpp
+        ${CMAKE_CURRENT_SOURCE_DIR}/cucumber/messages/tag.cpp
+        ${CMAKE_CURRENT_SOURCE_DIR}/cucumber/messages/test_case.cpp
+        ${CMAKE_CURRENT_SOURCE_DIR}/cucumber/messages/test_case_finished.cpp
+        ${CMAKE_CURRENT_SOURCE_DIR}/cucumber/messages/test_case_started.cpp
+        ${CMAKE_CURRENT_SOURCE_DIR}/cucumber/messages/test_run_finished.cpp
+        ${CMAKE_CURRENT_SOURCE_DIR}/cucumber/messages/test_run_started.cpp
+        ${CMAKE_CURRENT_SOURCE_DIR}/cucumber/messages/test_step.cpp
+        ${CMAKE_CURRENT_SOURCE_DIR}/cucumber/messages/test_step_finished.cpp
+        ${CMAKE_CURRENT_SOURCE_DIR}/cucumber/messages/test_step_result.cpp
+        ${CMAKE_CURRENT_SOURCE_DIR}/cucumber/messages/test_step_started.cpp
+        ${CMAKE_CURRENT_SOURCE_DIR}/cucumber/messages/timestamp.cpp
+        ${CMAKE_CURRENT_SOURCE_DIR}/cucumber/messages/undefined_parameter_type.cpp
+)
+
+target_include_directories(
+    cucumber-messages_library
+    PUBLIC
+        $<BUILD_INTERFACE:${INC_DIR}>
+        $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}/cucumber>
+    PRIVATE
+        ${INC_DIR}
+        ${CMAKE_CURRENT_SOURCE_DIR}
+)
+
+set_target_properties(
+    cucumber-messages_library
+    PROPERTIES
+    OUTPUT_NAME cucumber_messages
+)
diff --git a/cpp/src/lib/cucumber-messages/cucumber/utils.hpp b/cpp/src/lib/cucumber-messages/cucumber/utils.hpp
new file mode 100644
index 00000000..6cd673b9
--- /dev/null
+++ b/cpp/src/lib/cucumber-messages/cucumber/utils.hpp
@@ -0,0 +1,26 @@
+#pragma once
+
+#include <string>
+#include <sstream>
+#include <vector>
+
+namespace cucumber {
+
+template <typename Msg>
+std::string
+to_string(const std::vector<Msg>& msgs)
+{
+    std::ostringstream oss;
+
+    oss << '[';
+
+    for (std::size_t i = 0; i < msgs.size(); ++i) {
+        oss << (i > 0 ? ", " : "") << msgs[i];
+    }
+
+    oss << ']';
+
+    return oss.str();
+}
+
+}
diff --git a/jsonschema/scripts/templates/cpp.enum.hpp.erb b/jsonschema/scripts/templates/cpp.enum.hpp.erb
index 72c9a100..111213ce 100644
--- a/jsonschema/scripts/templates/cpp.enum.hpp.erb
+++ b/jsonschema/scripts/templates/cpp.enum.hpp.erb
@@ -3,19 +3,52 @@
 <%= ename %>.hpp
 #pragma once
 
-#include <unordered_map>
 #include <string_view>
 
 namespace cucumber::messages {
 
 enum class <%= ename %>
+{
+<%-
+  vals = enum[:values].map { |v| enum_constant(v) }
+-%>
+    <%= vals.join(",\n    ") %>
+};
+
+std::string_view
+to_string(<%= ename %> v);
+
+std::ostream&
+operator<<(std::ostream& os, <%= ename %> v);
+
+}
+<%= ename %>.cpp
+#include <unordered_map>
+
+#include <cucumber/messages/<%= ename %>.hpp>
+
+namespace cucumber::messages {
+
+std::string_view
+to_string(<%= ename %> v)
+{
+    using map_type = std::unordered_map<<%= ename %>, std::string_view>;
+
+    static const map_type m = {
 <%- enum[:values].each_with_index do |value, index| -%>
-  <%= enum_constant(value) %> = '<%= value %>'
-<%- end -%>
-end
+        { <%= enum_constant(value) %>, "<%= value %>" }<%= index < enum[:values].length-1 ? ',' : '' %>
+<% end -%>
+    };
+
+    return m.at(v);
+}
 
-using <%= ename %>_map = std::unordered_map<ename, std::string_view>;
+std::ostream&
+operator<<(std::ostream& os, <%= ename %> v)
+{
+    os << to_string(v);
 
+    return os;
 }
 
-<%- end -%>
+}<%- end -%>
diff --git a/jsonschema/scripts/templates/cpp.hpp.erb b/jsonschema/scripts/templates/cpp.hpp.erb
index 2f483355..088d4c51 100644
--- a/jsonschema/scripts/templates/cpp.hpp.erb
+++ b/jsonschema/scripts/templates/cpp.hpp.erb
@@ -3,12 +3,19 @@
 <%= myclass %>.hpp
 #pragma once
 
+#include <vector>
+
 #include <cucumber/message.hpp>
 <%-
     incs = []
     schema['properties'].each do |property_name, property|
         type = underscore(type_for(class_name(key), property_name, property))
-        incs.append(type) if !type.start_with?("std::")
+        if m = /std::vector<(?<vtype>.+)>/.match(type)
+            type = m['vtype']
+        end
+        next if type.start_with?("std::")
+        next if type == "bool"
+        incs.append(type)
     end
 
     if incs.length > 0
@@ -34,7 +41,18 @@ namespace cucumber::messages {
 struct <%= myclass %> : cucumber::message
 {
   <%- schema['properties'].each do |property_name, property| -%>
-    <%= underscore(type_for(class_name(key), property_name, property)) -%> <%= underscore(property_name) %>;
+    <%- type = underscore(type_for(class_name(key), property_name, property)) -%>
+    <%- if m = /std::vector<(?<vtype>.+)>/.match(type) -%>
+        <%- if !m['vtype'].start_with?("std::") -%>
+    std::vector<cucumber::messages::<%= m['vtype'] -%>> <%= underscore(property_name) %>;
+        <%- else -%>
+    <%= type -%> <%= underscore(property_name) %>;
+        <%- end -%>
+    <%- elsif !type.start_with?("std::") && type != "bool" -%>
+    cucumber::messages::<%= type -%> <%= underscore(property_name) %>;
+    <%- else -%>
+    <%= type -%> <%= underscore(property_name) %>;
+    <%- end -%>
   <%- end -%>
 
     std::string to_string() const override;
@@ -44,6 +62,7 @@ struct <%= myclass %> : cucumber::message
 <%= myclass %>.cpp
 #include <sstream>
 
+#include <cucumber/utils.hpp>
 #include <cucumber/messages/<%= myclass %>.hpp>
 
 namespace cucumber::messages {
@@ -55,7 +74,13 @@ std::string
 
     oss
     <%- schema['properties'].each_with_index do |(property_name, property), index| -%>
+    <%- type = underscore(type_for(class_name(key), property_name, property)) -%>
+    <%- std_vec = /std::vector<std::.+>/.match(type) -%>
+    <%- if std_vec -%>
+        << "<%= index == 0 ? '' : ', '%><%= underscore(property_name) %>=" << cucumber::to_string(<%= underscore(property_name) %>)
+    <%- else -%>
         << "<%= index == 0 ? '' : ', '%><%= underscore(property_name) %>=" << <%= underscore(property_name) %>
+    <%- end -%>
     <%- end -%>
         ;
 

From 1082a8afe0889ca443e0cba6abb6d443692ad640 Mon Sep 17 00:00:00 2001
From: Remy Chibois <rcs@weez-u-welding.com>
Date: Thu, 4 May 2023 10:25:54 +0200
Subject: [PATCH 03/26] chore: cleaned library name, install interface

---
 cpp/.gitignore                               |  4 +++-
 cpp/CMakeLists.txt                           |  3 ++-
 cpp/Makefile                                 | 12 ++++++++++-
 cpp/src/lib/cucumber-messages/CMakeLists.txt | 22 +++++++++++++-------
 4 files changed, 30 insertions(+), 11 deletions(-)

diff --git a/cpp/.gitignore b/cpp/.gitignore
index 8de76d6e..9ea7933d 100644
--- a/cpp/.gitignore
+++ b/cpp/.gitignore
@@ -1,3 +1,5 @@
-build/
 include/cucumber/messages/
 src/lib/cucumber-messages/cucumber/messages/
+.configured
+.built
+build/
diff --git a/cpp/CMakeLists.txt b/cpp/CMakeLists.txt
index 9839a861..a6ccb113 100644
--- a/cpp/CMakeLists.txt
+++ b/cpp/CMakeLists.txt
@@ -13,8 +13,9 @@ add_subdirectory(src)
 
 install(
     TARGETS
-        cucumber-messages_library
+        cucumber-messages
     EXPORT cucumber-messages-config
+    FILE_SET cucumber_messages_headers
     RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
     LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
     ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
diff --git a/cpp/Makefile b/cpp/Makefile
index f3a28613..b2f0e350 100644
--- a/cpp/Makefile
+++ b/cpp/Makefile
@@ -17,7 +17,7 @@ require: ## Check requirements for the code generation (ruby, csplit and tail ar
 	@tail --version >/dev/null 2>&1 || (echo "ERROR: tail is required."; exit 1)
 
 clean: ## Remove automatically generated files and related artifacts
-	rm -rf $(GEN_DIRS)
+	rm -rf $(GEN_DIRS) build .configured
 
 .generate-messages: $(schemas) ../jsonschema/scripts/codegen.rb ../jsonschema/scripts/templates/cpp.hpp.erb ../jsonschema/scripts/templates/cpp.enum.hpp.erb
 	ruby ../jsonschema/scripts/codegen.rb Cpp ../jsonschema cpp.hpp.erb > Generated.hpp.tmp
@@ -36,3 +36,13 @@ clean: ## Remove automatically generated files and related artifacts
 	done
 
 	mv $(INC_DIR)/*.cpp $(LIB_DIR)/ || true
+
+clean-build:
+	rm -rf build .configured .built
+
+.configured:
+	mkdir -p build
+	cmake -S . -B build && touch $@
+
+.built: .configured
+	cmake --build build --parallel && touch $@
diff --git a/cpp/src/lib/cucumber-messages/CMakeLists.txt b/cpp/src/lib/cucumber-messages/CMakeLists.txt
index 152a58b6..6ab0831c 100644
--- a/cpp/src/lib/cucumber-messages/CMakeLists.txt
+++ b/cpp/src/lib/cucumber-messages/CMakeLists.txt
@@ -1,11 +1,17 @@
-add_library(cucumber-messages_library)
-add_library(cucumber::messages ALIAS cucumber-messages_library)
+add_library(cucumber-messages)
+add_library(cucumber::messages ALIAS cucumber-messages)
 
 set(INC_DIR "${CMAKE_SOURCE_DIR}/include")
 
 target_sources(
-    cucumber-messages_library
-    PRIVATE
+    cucumber-messages
+    PUBLIC
+    FILE_SET
+        "cucumber_messages_headers"
+        TYPE HEADERS
+        BASE_DIRS ${INC_DIR}
+        FILES
+        ${INC_DIR}/cucumber/message.hpp
         ${INC_DIR}/cucumber/messages/attachment_content_encoding.hpp
         ${INC_DIR}/cucumber/messages/attachment.hpp
         ${INC_DIR}/cucumber/messages/background.hpp
@@ -67,6 +73,7 @@ target_sources(
         ${INC_DIR}/cucumber/messages/test_step_started.hpp
         ${INC_DIR}/cucumber/messages/timestamp.hpp
         ${INC_DIR}/cucumber/messages/undefined_parameter_type.hpp
+    PRIVATE
         ${CMAKE_CURRENT_SOURCE_DIR}/cucumber/utils.hpp
         ${CMAKE_CURRENT_SOURCE_DIR}/cucumber/messages/attachment.cpp
         ${CMAKE_CURRENT_SOURCE_DIR}/cucumber/messages/background.cpp
@@ -126,17 +133,16 @@ target_sources(
 )
 
 target_include_directories(
-    cucumber-messages_library
-    PUBLIC
+    cucumber-messages
+    INTERFACE
         $<BUILD_INTERFACE:${INC_DIR}>
         $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}/cucumber>
     PRIVATE
-        ${INC_DIR}
         ${CMAKE_CURRENT_SOURCE_DIR}
 )
 
 set_target_properties(
-    cucumber-messages_library
+    cucumber-messages
     PROPERTIES
     OUTPUT_NAME cucumber_messages
 )

From 37e5e89d840db105b0160c410d7c6283d6569a57 Mon Sep 17 00:00:00 2001
From: Remy Chibois <rcs@weez-u-welding.com>
Date: Thu, 4 May 2023 10:34:32 +0200
Subject: [PATCH 04/26] chore: add message files

---
 cpp/.gitignore                                |  2 -
 cpp/include/cucumber/messages/attachment.hpp  | 44 +++++++++++++
 .../messages/attachment_content_encoding.hpp  | 19 ++++++
 cpp/include/cucumber/messages/background.hpp  | 30 +++++++++
 cpp/include/cucumber/messages/ci.hpp          | 29 +++++++++
 cpp/include/cucumber/messages/comment.hpp     | 27 ++++++++
 cpp/include/cucumber/messages/data_table.hpp  | 26 ++++++++
 cpp/include/cucumber/messages/doc_string.hpp  | 27 ++++++++
 cpp/include/cucumber/messages/duration.hpp    | 26 ++++++++
 cpp/include/cucumber/messages/envelope.hpp    | 63 +++++++++++++++++++
 cpp/include/cucumber/messages/examples.hpp    | 34 ++++++++++
 cpp/include/cucumber/messages/exception.hpp   | 25 ++++++++
 cpp/include/cucumber/messages/feature.hpp     | 32 ++++++++++
 .../cucumber/messages/feature_child.hpp       | 30 +++++++++
 .../cucumber/messages/gherkin_document.hpp    | 34 ++++++++++
 cpp/include/cucumber/messages/git.hpp         | 28 +++++++++
 cpp/include/cucumber/messages/group.hpp       | 26 ++++++++
 cpp/include/cucumber/messages/hook.hpp        | 27 ++++++++
 cpp/include/cucumber/messages/java_method.hpp | 24 +++++++
 .../messages/java_stack_trace_element.hpp     | 24 +++++++
 cpp/include/cucumber/messages/location.hpp    | 25 ++++++++
 cpp/include/cucumber/messages/meta.hpp        | 36 +++++++++++
 .../cucumber/messages/parameter_type.hpp      | 29 +++++++++
 cpp/include/cucumber/messages/parse_error.hpp | 25 ++++++++
 cpp/include/cucumber/messages/pickle.hpp      | 44 +++++++++++++
 .../cucumber/messages/pickle_doc_string.hpp   | 23 +++++++
 cpp/include/cucumber/messages/pickle_step.hpp | 31 +++++++++
 .../messages/pickle_step_argument.hpp         | 28 +++++++++
 .../cucumber/messages/pickle_step_type.hpp    | 21 +++++++
 .../cucumber/messages/pickle_table.hpp        | 24 +++++++
 .../cucumber/messages/pickle_table_cell.hpp   | 22 +++++++
 .../cucumber/messages/pickle_table_row.hpp    | 24 +++++++
 cpp/include/cucumber/messages/pickle_tag.hpp  | 25 ++++++++
 cpp/include/cucumber/messages/product.hpp     | 25 ++++++++
 cpp/include/cucumber/messages/rule.hpp        | 32 ++++++++++
 cpp/include/cucumber/messages/rule_child.hpp  | 28 +++++++++
 cpp/include/cucumber/messages/scenario.hpp    | 34 ++++++++++
 cpp/include/cucumber/messages/source.hpp      | 30 +++++++++
 .../cucumber/messages/source_media_type.hpp   | 19 ++++++
 .../cucumber/messages/source_reference.hpp    | 32 ++++++++++
 cpp/include/cucumber/messages/step.hpp        | 35 +++++++++++
 .../cucumber/messages/step_definition.hpp     | 27 ++++++++
 .../messages/step_definition_pattern.hpp      | 25 ++++++++
 .../messages/step_definition_pattern_type.hpp | 19 ++++++
 .../cucumber/messages/step_keyword_type.hpp   | 22 +++++++
 .../cucumber/messages/step_match_argument.hpp | 32 ++++++++++
 .../messages/step_match_arguments_list.hpp    | 24 +++++++
 cpp/include/cucumber/messages/table_cell.hpp  | 27 ++++++++
 cpp/include/cucumber/messages/table_row.hpp   | 29 +++++++++
 cpp/include/cucumber/messages/tag.hpp         | 28 +++++++++
 cpp/include/cucumber/messages/test_case.hpp   | 30 +++++++++
 .../cucumber/messages/test_case_finished.hpp  | 26 ++++++++
 .../cucumber/messages/test_case_started.hpp   | 28 +++++++++
 .../cucumber/messages/test_run_finished.hpp   | 28 +++++++++
 .../cucumber/messages/test_run_started.hpp    | 24 +++++++
 cpp/include/cucumber/messages/test_step.hpp   | 31 +++++++++
 .../cucumber/messages/test_step_finished.hpp  | 28 +++++++++
 .../cucumber/messages/test_step_result.hpp    | 29 +++++++++
 .../messages/test_step_result_status.hpp      | 24 +++++++
 .../cucumber/messages/test_step_started.hpp   | 26 ++++++++
 cpp/include/cucumber/messages/timestamp.hpp   | 23 +++++++
 .../messages/undefined_parameter_type.hpp     | 23 +++++++
 .../cucumber/messages/attachment.cpp          | 27 ++++++++
 .../messages/attachment_content_encoding.cpp  | 28 +++++++++
 .../cucumber/messages/background.cpp          | 25 ++++++++
 .../cucumber/messages/ci.cpp                  | 23 +++++++
 .../cucumber/messages/comment.cpp             | 21 +++++++
 .../cucumber/messages/data_table.cpp          | 21 +++++++
 .../cucumber/messages/doc_string.cpp          | 23 +++++++
 .../cucumber/messages/duration.cpp            | 21 +++++++
 .../cucumber/messages/envelope.cpp            | 36 +++++++++++
 .../cucumber/messages/examples.cpp            | 27 ++++++++
 .../cucumber/messages/exception.cpp           | 21 +++++++
 .../cucumber/messages/feature.cpp             | 26 ++++++++
 .../cucumber/messages/feature_child.cpp       | 22 +++++++
 .../cucumber/messages/gherkin_document.cpp    | 22 +++++++
 .../cucumber/messages/git.cpp                 | 23 +++++++
 .../cucumber/messages/group.cpp               | 22 +++++++
 .../cucumber/messages/hook.cpp                | 23 +++++++
 .../cucumber/messages/java_method.cpp         | 22 +++++++
 .../messages/java_stack_trace_element.cpp     | 22 +++++++
 .../cucumber/messages/location.cpp            | 21 +++++++
 .../cucumber/messages/meta.cpp                | 25 ++++++++
 .../cucumber/messages/parameter_type.cpp      | 25 ++++++++
 .../cucumber/messages/parse_error.cpp         | 21 +++++++
 .../cucumber/messages/pickle.cpp              | 26 ++++++++
 .../cucumber/messages/pickle_doc_string.cpp   | 21 +++++++
 .../cucumber/messages/pickle_step.cpp         | 24 +++++++
 .../messages/pickle_step_argument.cpp         | 21 +++++++
 .../cucumber/messages/pickle_step_type.cpp    | 30 +++++++++
 .../cucumber/messages/pickle_table.cpp        | 20 ++++++
 .../cucumber/messages/pickle_table_cell.cpp   | 20 ++++++
 .../cucumber/messages/pickle_table_row.cpp    | 20 ++++++
 .../cucumber/messages/pickle_tag.cpp          | 21 +++++++
 .../cucumber/messages/product.cpp             | 21 +++++++
 .../cucumber/messages/rule.cpp                | 26 ++++++++
 .../cucumber/messages/rule_child.cpp          | 21 +++++++
 .../cucumber/messages/scenario.cpp            | 27 ++++++++
 .../cucumber/messages/source.cpp              | 22 +++++++
 .../cucumber/messages/source_media_type.cpp   | 28 +++++++++
 .../cucumber/messages/source_reference.cpp    | 23 +++++++
 .../cucumber/messages/step.cpp                | 26 ++++++++
 .../cucumber/messages/step_definition.cpp     | 22 +++++++
 .../messages/step_definition_pattern.cpp      | 21 +++++++
 .../messages/step_definition_pattern_type.cpp | 28 +++++++++
 .../cucumber/messages/step_keyword_type.cpp   | 31 +++++++++
 .../cucumber/messages/step_match_argument.cpp | 21 +++++++
 .../messages/step_match_arguments_list.cpp    | 20 ++++++
 .../cucumber/messages/table_cell.cpp          | 21 +++++++
 .../cucumber/messages/table_row.cpp           | 22 +++++++
 .../cucumber/messages/tag.cpp                 | 22 +++++++
 .../cucumber/messages/test_case.cpp           | 22 +++++++
 .../cucumber/messages/test_case_finished.cpp  | 22 +++++++
 .../cucumber/messages/test_case_started.cpp   | 24 +++++++
 .../cucumber/messages/test_run_finished.cpp   | 23 +++++++
 .../cucumber/messages/test_run_started.cpp    | 20 ++++++
 .../cucumber/messages/test_step.cpp           | 24 +++++++
 .../cucumber/messages/test_step_finished.cpp  | 23 +++++++
 .../cucumber/messages/test_step_result.cpp    | 23 +++++++
 .../messages/test_step_result_status.cpp      | 33 ++++++++++
 .../cucumber/messages/test_step_started.cpp   | 22 +++++++
 .../cucumber/messages/timestamp.cpp           | 21 +++++++
 .../messages/undefined_parameter_type.cpp     | 21 +++++++
 123 files changed, 3150 insertions(+), 2 deletions(-)
 create mode 100644 cpp/include/cucumber/messages/attachment.hpp
 create mode 100644 cpp/include/cucumber/messages/attachment_content_encoding.hpp
 create mode 100644 cpp/include/cucumber/messages/background.hpp
 create mode 100644 cpp/include/cucumber/messages/ci.hpp
 create mode 100644 cpp/include/cucumber/messages/comment.hpp
 create mode 100644 cpp/include/cucumber/messages/data_table.hpp
 create mode 100644 cpp/include/cucumber/messages/doc_string.hpp
 create mode 100644 cpp/include/cucumber/messages/duration.hpp
 create mode 100644 cpp/include/cucumber/messages/envelope.hpp
 create mode 100644 cpp/include/cucumber/messages/examples.hpp
 create mode 100644 cpp/include/cucumber/messages/exception.hpp
 create mode 100644 cpp/include/cucumber/messages/feature.hpp
 create mode 100644 cpp/include/cucumber/messages/feature_child.hpp
 create mode 100644 cpp/include/cucumber/messages/gherkin_document.hpp
 create mode 100644 cpp/include/cucumber/messages/git.hpp
 create mode 100644 cpp/include/cucumber/messages/group.hpp
 create mode 100644 cpp/include/cucumber/messages/hook.hpp
 create mode 100644 cpp/include/cucumber/messages/java_method.hpp
 create mode 100644 cpp/include/cucumber/messages/java_stack_trace_element.hpp
 create mode 100644 cpp/include/cucumber/messages/location.hpp
 create mode 100644 cpp/include/cucumber/messages/meta.hpp
 create mode 100644 cpp/include/cucumber/messages/parameter_type.hpp
 create mode 100644 cpp/include/cucumber/messages/parse_error.hpp
 create mode 100644 cpp/include/cucumber/messages/pickle.hpp
 create mode 100644 cpp/include/cucumber/messages/pickle_doc_string.hpp
 create mode 100644 cpp/include/cucumber/messages/pickle_step.hpp
 create mode 100644 cpp/include/cucumber/messages/pickle_step_argument.hpp
 create mode 100644 cpp/include/cucumber/messages/pickle_step_type.hpp
 create mode 100644 cpp/include/cucumber/messages/pickle_table.hpp
 create mode 100644 cpp/include/cucumber/messages/pickle_table_cell.hpp
 create mode 100644 cpp/include/cucumber/messages/pickle_table_row.hpp
 create mode 100644 cpp/include/cucumber/messages/pickle_tag.hpp
 create mode 100644 cpp/include/cucumber/messages/product.hpp
 create mode 100644 cpp/include/cucumber/messages/rule.hpp
 create mode 100644 cpp/include/cucumber/messages/rule_child.hpp
 create mode 100644 cpp/include/cucumber/messages/scenario.hpp
 create mode 100644 cpp/include/cucumber/messages/source.hpp
 create mode 100644 cpp/include/cucumber/messages/source_media_type.hpp
 create mode 100644 cpp/include/cucumber/messages/source_reference.hpp
 create mode 100644 cpp/include/cucumber/messages/step.hpp
 create mode 100644 cpp/include/cucumber/messages/step_definition.hpp
 create mode 100644 cpp/include/cucumber/messages/step_definition_pattern.hpp
 create mode 100644 cpp/include/cucumber/messages/step_definition_pattern_type.hpp
 create mode 100644 cpp/include/cucumber/messages/step_keyword_type.hpp
 create mode 100644 cpp/include/cucumber/messages/step_match_argument.hpp
 create mode 100644 cpp/include/cucumber/messages/step_match_arguments_list.hpp
 create mode 100644 cpp/include/cucumber/messages/table_cell.hpp
 create mode 100644 cpp/include/cucumber/messages/table_row.hpp
 create mode 100644 cpp/include/cucumber/messages/tag.hpp
 create mode 100644 cpp/include/cucumber/messages/test_case.hpp
 create mode 100644 cpp/include/cucumber/messages/test_case_finished.hpp
 create mode 100644 cpp/include/cucumber/messages/test_case_started.hpp
 create mode 100644 cpp/include/cucumber/messages/test_run_finished.hpp
 create mode 100644 cpp/include/cucumber/messages/test_run_started.hpp
 create mode 100644 cpp/include/cucumber/messages/test_step.hpp
 create mode 100644 cpp/include/cucumber/messages/test_step_finished.hpp
 create mode 100644 cpp/include/cucumber/messages/test_step_result.hpp
 create mode 100644 cpp/include/cucumber/messages/test_step_result_status.hpp
 create mode 100644 cpp/include/cucumber/messages/test_step_started.hpp
 create mode 100644 cpp/include/cucumber/messages/timestamp.hpp
 create mode 100644 cpp/include/cucumber/messages/undefined_parameter_type.hpp
 create mode 100644 cpp/src/lib/cucumber-messages/cucumber/messages/attachment.cpp
 create mode 100644 cpp/src/lib/cucumber-messages/cucumber/messages/attachment_content_encoding.cpp
 create mode 100644 cpp/src/lib/cucumber-messages/cucumber/messages/background.cpp
 create mode 100644 cpp/src/lib/cucumber-messages/cucumber/messages/ci.cpp
 create mode 100644 cpp/src/lib/cucumber-messages/cucumber/messages/comment.cpp
 create mode 100644 cpp/src/lib/cucumber-messages/cucumber/messages/data_table.cpp
 create mode 100644 cpp/src/lib/cucumber-messages/cucumber/messages/doc_string.cpp
 create mode 100644 cpp/src/lib/cucumber-messages/cucumber/messages/duration.cpp
 create mode 100644 cpp/src/lib/cucumber-messages/cucumber/messages/envelope.cpp
 create mode 100644 cpp/src/lib/cucumber-messages/cucumber/messages/examples.cpp
 create mode 100644 cpp/src/lib/cucumber-messages/cucumber/messages/exception.cpp
 create mode 100644 cpp/src/lib/cucumber-messages/cucumber/messages/feature.cpp
 create mode 100644 cpp/src/lib/cucumber-messages/cucumber/messages/feature_child.cpp
 create mode 100644 cpp/src/lib/cucumber-messages/cucumber/messages/gherkin_document.cpp
 create mode 100644 cpp/src/lib/cucumber-messages/cucumber/messages/git.cpp
 create mode 100644 cpp/src/lib/cucumber-messages/cucumber/messages/group.cpp
 create mode 100644 cpp/src/lib/cucumber-messages/cucumber/messages/hook.cpp
 create mode 100644 cpp/src/lib/cucumber-messages/cucumber/messages/java_method.cpp
 create mode 100644 cpp/src/lib/cucumber-messages/cucumber/messages/java_stack_trace_element.cpp
 create mode 100644 cpp/src/lib/cucumber-messages/cucumber/messages/location.cpp
 create mode 100644 cpp/src/lib/cucumber-messages/cucumber/messages/meta.cpp
 create mode 100644 cpp/src/lib/cucumber-messages/cucumber/messages/parameter_type.cpp
 create mode 100644 cpp/src/lib/cucumber-messages/cucumber/messages/parse_error.cpp
 create mode 100644 cpp/src/lib/cucumber-messages/cucumber/messages/pickle.cpp
 create mode 100644 cpp/src/lib/cucumber-messages/cucumber/messages/pickle_doc_string.cpp
 create mode 100644 cpp/src/lib/cucumber-messages/cucumber/messages/pickle_step.cpp
 create mode 100644 cpp/src/lib/cucumber-messages/cucumber/messages/pickle_step_argument.cpp
 create mode 100644 cpp/src/lib/cucumber-messages/cucumber/messages/pickle_step_type.cpp
 create mode 100644 cpp/src/lib/cucumber-messages/cucumber/messages/pickle_table.cpp
 create mode 100644 cpp/src/lib/cucumber-messages/cucumber/messages/pickle_table_cell.cpp
 create mode 100644 cpp/src/lib/cucumber-messages/cucumber/messages/pickle_table_row.cpp
 create mode 100644 cpp/src/lib/cucumber-messages/cucumber/messages/pickle_tag.cpp
 create mode 100644 cpp/src/lib/cucumber-messages/cucumber/messages/product.cpp
 create mode 100644 cpp/src/lib/cucumber-messages/cucumber/messages/rule.cpp
 create mode 100644 cpp/src/lib/cucumber-messages/cucumber/messages/rule_child.cpp
 create mode 100644 cpp/src/lib/cucumber-messages/cucumber/messages/scenario.cpp
 create mode 100644 cpp/src/lib/cucumber-messages/cucumber/messages/source.cpp
 create mode 100644 cpp/src/lib/cucumber-messages/cucumber/messages/source_media_type.cpp
 create mode 100644 cpp/src/lib/cucumber-messages/cucumber/messages/source_reference.cpp
 create mode 100644 cpp/src/lib/cucumber-messages/cucumber/messages/step.cpp
 create mode 100644 cpp/src/lib/cucumber-messages/cucumber/messages/step_definition.cpp
 create mode 100644 cpp/src/lib/cucumber-messages/cucumber/messages/step_definition_pattern.cpp
 create mode 100644 cpp/src/lib/cucumber-messages/cucumber/messages/step_definition_pattern_type.cpp
 create mode 100644 cpp/src/lib/cucumber-messages/cucumber/messages/step_keyword_type.cpp
 create mode 100644 cpp/src/lib/cucumber-messages/cucumber/messages/step_match_argument.cpp
 create mode 100644 cpp/src/lib/cucumber-messages/cucumber/messages/step_match_arguments_list.cpp
 create mode 100644 cpp/src/lib/cucumber-messages/cucumber/messages/table_cell.cpp
 create mode 100644 cpp/src/lib/cucumber-messages/cucumber/messages/table_row.cpp
 create mode 100644 cpp/src/lib/cucumber-messages/cucumber/messages/tag.cpp
 create mode 100644 cpp/src/lib/cucumber-messages/cucumber/messages/test_case.cpp
 create mode 100644 cpp/src/lib/cucumber-messages/cucumber/messages/test_case_finished.cpp
 create mode 100644 cpp/src/lib/cucumber-messages/cucumber/messages/test_case_started.cpp
 create mode 100644 cpp/src/lib/cucumber-messages/cucumber/messages/test_run_finished.cpp
 create mode 100644 cpp/src/lib/cucumber-messages/cucumber/messages/test_run_started.cpp
 create mode 100644 cpp/src/lib/cucumber-messages/cucumber/messages/test_step.cpp
 create mode 100644 cpp/src/lib/cucumber-messages/cucumber/messages/test_step_finished.cpp
 create mode 100644 cpp/src/lib/cucumber-messages/cucumber/messages/test_step_result.cpp
 create mode 100644 cpp/src/lib/cucumber-messages/cucumber/messages/test_step_result_status.cpp
 create mode 100644 cpp/src/lib/cucumber-messages/cucumber/messages/test_step_started.cpp
 create mode 100644 cpp/src/lib/cucumber-messages/cucumber/messages/timestamp.cpp
 create mode 100644 cpp/src/lib/cucumber-messages/cucumber/messages/undefined_parameter_type.cpp

diff --git a/cpp/.gitignore b/cpp/.gitignore
index 9ea7933d..b3fcb7ca 100644
--- a/cpp/.gitignore
+++ b/cpp/.gitignore
@@ -1,5 +1,3 @@
-include/cucumber/messages/
-src/lib/cucumber-messages/cucumber/messages/
 .configured
 .built
 build/
diff --git a/cpp/include/cucumber/messages/attachment.hpp b/cpp/include/cucumber/messages/attachment.hpp
new file mode 100644
index 00000000..a587d37e
--- /dev/null
+++ b/cpp/include/cucumber/messages/attachment.hpp
@@ -0,0 +1,44 @@
+#pragma once
+
+#include <vector>
+
+#include <cucumber/message.hpp>
+
+#include <cucumber/messages/attachment_content_encoding.hpp>
+#include <cucumber/messages/source.hpp>
+
+namespace cucumber::messages {
+
+//
+// Represents the Attachment message in Cucumber's message protocol
+// @see <a href=https://github.com/cucumber/messages>Github - Cucumber - Messages</a>
+//
+// //// Attachments (parse errors, execution errors, screenshots, links...)
+//
+// An attachment represents any kind of data associated with a line in a
+// [Source](#io.cucumber.messages.Source) file. It can be used for:
+//
+// * Syntax errors during parse time
+// * Screenshots captured and attached during execution
+// * Logs captured and attached during execution
+//
+// It is not to be used for runtime errors raised/thrown during execution. This
+// is captured in `TestResult`.
+//
+// Generated code
+
+struct attachment : cucumber::message
+{
+    std::string body;
+    cucumber::messages::attachment_content_encoding content_encoding;
+    std::string file_name;
+    std::string media_type;
+    cucumber::messages::source source;
+    std::string test_case_started_id;
+    std::string test_step_id;
+    std::string url;
+
+    std::string to_string() const override;
+};
+
+}
diff --git a/cpp/include/cucumber/messages/attachment_content_encoding.hpp b/cpp/include/cucumber/messages/attachment_content_encoding.hpp
new file mode 100644
index 00000000..36f54140
--- /dev/null
+++ b/cpp/include/cucumber/messages/attachment_content_encoding.hpp
@@ -0,0 +1,19 @@
+#pragma once
+
+#include <string_view>
+
+namespace cucumber::messages {
+
+enum class attachment_content_encoding
+{
+    IDENTITY,
+    BASE64
+};
+
+std::string_view
+to_string(attachment_content_encoding v);
+
+std::ostream&
+operator<<(std::ostream& os, attachment_content_encoding v);
+
+}
diff --git a/cpp/include/cucumber/messages/background.hpp b/cpp/include/cucumber/messages/background.hpp
new file mode 100644
index 00000000..0b284beb
--- /dev/null
+++ b/cpp/include/cucumber/messages/background.hpp
@@ -0,0 +1,30 @@
+#pragma once
+
+#include <vector>
+
+#include <cucumber/message.hpp>
+
+#include <cucumber/messages/location.hpp>
+#include <cucumber/messages/step.hpp>
+
+namespace cucumber::messages {
+
+//
+// Represents the Background message in Cucumber's message protocol
+// @see <a href=https://github.com/cucumber/messages>Github - Cucumber - Messages</a>
+//
+// Generated code
+
+struct background : cucumber::message
+{
+    cucumber::messages::location location;
+    std::string keyword;
+    std::string name;
+    std::string description;
+    std::vector<cucumber::messages::step> steps;
+    std::string id;
+
+    std::string to_string() const override;
+};
+
+}
diff --git a/cpp/include/cucumber/messages/ci.hpp b/cpp/include/cucumber/messages/ci.hpp
new file mode 100644
index 00000000..b766b1cd
--- /dev/null
+++ b/cpp/include/cucumber/messages/ci.hpp
@@ -0,0 +1,29 @@
+#pragma once
+
+#include <vector>
+
+#include <cucumber/message.hpp>
+
+#include <cucumber/messages/git.hpp>
+
+namespace cucumber::messages {
+
+//
+// Represents the Ci message in Cucumber's message protocol
+// @see <a href=https://github.com/cucumber/messages>Github - Cucumber - Messages</a>
+//
+// CI environment
+//
+// Generated code
+
+struct ci : cucumber::message
+{
+    std::string name;
+    std::string url;
+    std::string build_number;
+    cucumber::messages::git git;
+
+    std::string to_string() const override;
+};
+
+}
diff --git a/cpp/include/cucumber/messages/comment.hpp b/cpp/include/cucumber/messages/comment.hpp
new file mode 100644
index 00000000..097b5b16
--- /dev/null
+++ b/cpp/include/cucumber/messages/comment.hpp
@@ -0,0 +1,27 @@
+#pragma once
+
+#include <vector>
+
+#include <cucumber/message.hpp>
+
+#include <cucumber/messages/location.hpp>
+
+namespace cucumber::messages {
+
+//
+// Represents the Comment message in Cucumber's message protocol
+// @see <a href=https://github.com/cucumber/messages>Github - Cucumber - Messages</a>
+//
+// A comment in a Gherkin document
+//
+// Generated code
+
+struct comment : cucumber::message
+{
+    cucumber::messages::location location;
+    std::string text;
+
+    std::string to_string() const override;
+};
+
+}
diff --git a/cpp/include/cucumber/messages/data_table.hpp b/cpp/include/cucumber/messages/data_table.hpp
new file mode 100644
index 00000000..1f4da9e8
--- /dev/null
+++ b/cpp/include/cucumber/messages/data_table.hpp
@@ -0,0 +1,26 @@
+#pragma once
+
+#include <vector>
+
+#include <cucumber/message.hpp>
+
+#include <cucumber/messages/location.hpp>
+#include <cucumber/messages/table_row.hpp>
+
+namespace cucumber::messages {
+
+//
+// Represents the DataTable message in Cucumber's message protocol
+// @see <a href=https://github.com/cucumber/messages>Github - Cucumber - Messages</a>
+//
+// Generated code
+
+struct data_table : cucumber::message
+{
+    cucumber::messages::location location;
+    std::vector<cucumber::messages::table_row> rows;
+
+    std::string to_string() const override;
+};
+
+}
diff --git a/cpp/include/cucumber/messages/doc_string.hpp b/cpp/include/cucumber/messages/doc_string.hpp
new file mode 100644
index 00000000..790f8bfe
--- /dev/null
+++ b/cpp/include/cucumber/messages/doc_string.hpp
@@ -0,0 +1,27 @@
+#pragma once
+
+#include <vector>
+
+#include <cucumber/message.hpp>
+
+#include <cucumber/messages/location.hpp>
+
+namespace cucumber::messages {
+
+//
+// Represents the DocString message in Cucumber's message protocol
+// @see <a href=https://github.com/cucumber/messages>Github - Cucumber - Messages</a>
+//
+// Generated code
+
+struct doc_string : cucumber::message
+{
+    cucumber::messages::location location;
+    std::string media_type;
+    std::string content;
+    std::string delimiter;
+
+    std::string to_string() const override;
+};
+
+}
diff --git a/cpp/include/cucumber/messages/duration.hpp b/cpp/include/cucumber/messages/duration.hpp
new file mode 100644
index 00000000..27169150
--- /dev/null
+++ b/cpp/include/cucumber/messages/duration.hpp
@@ -0,0 +1,26 @@
+#pragma once
+
+#include <vector>
+
+#include <cucumber/message.hpp>
+
+namespace cucumber::messages {
+
+//
+// Represents the Duration message in Cucumber's message protocol
+// @see <a href=https://github.com/cucumber/messages>Github - Cucumber - Messages</a>
+//
+// The structure is pretty close of the Timestamp one. For clarity, a second type
+// of message is used.
+//
+// Generated code
+
+struct duration : cucumber::message
+{
+    std::size_t seconds;
+    std::size_t nanos;
+
+    std::string to_string() const override;
+};
+
+}
diff --git a/cpp/include/cucumber/messages/envelope.hpp b/cpp/include/cucumber/messages/envelope.hpp
new file mode 100644
index 00000000..d4ea6d31
--- /dev/null
+++ b/cpp/include/cucumber/messages/envelope.hpp
@@ -0,0 +1,63 @@
+#pragma once
+
+#include <vector>
+
+#include <cucumber/message.hpp>
+
+#include <cucumber/messages/attachment.hpp>
+#include <cucumber/messages/gherkin_document.hpp>
+#include <cucumber/messages/hook.hpp>
+#include <cucumber/messages/meta.hpp>
+#include <cucumber/messages/parameter_type.hpp>
+#include <cucumber/messages/parse_error.hpp>
+#include <cucumber/messages/pickle.hpp>
+#include <cucumber/messages/source.hpp>
+#include <cucumber/messages/step_definition.hpp>
+#include <cucumber/messages/test_case.hpp>
+#include <cucumber/messages/test_case_finished.hpp>
+#include <cucumber/messages/test_case_started.hpp>
+#include <cucumber/messages/test_run_finished.hpp>
+#include <cucumber/messages/test_run_started.hpp>
+#include <cucumber/messages/test_step_finished.hpp>
+#include <cucumber/messages/test_step_started.hpp>
+#include <cucumber/messages/undefined_parameter_type.hpp>
+
+namespace cucumber::messages {
+
+//
+// Represents the Envelope message in Cucumber's message protocol
+// @see <a href=https://github.com/cucumber/messages>Github - Cucumber - Messages</a>
+//
+// When removing a field, replace it with reserved, rather than deleting the line.
+// When adding a field, add it to the end and increment the number by one.
+// See https://developers.google.com/protocol-buffers/docs/proto#updating for details
+//
+// All the messages that are passed between different components/processes are Envelope
+// messages.
+//
+// Generated code
+
+struct envelope : cucumber::message
+{
+    cucumber::messages::attachment attachment;
+    cucumber::messages::gherkin_document gherkin_document;
+    cucumber::messages::hook hook;
+    cucumber::messages::meta meta;
+    cucumber::messages::parameter_type parameter_type;
+    cucumber::messages::parse_error parse_error;
+    cucumber::messages::pickle pickle;
+    cucumber::messages::source source;
+    cucumber::messages::step_definition step_definition;
+    cucumber::messages::test_case test_case;
+    cucumber::messages::test_case_finished test_case_finished;
+    cucumber::messages::test_case_started test_case_started;
+    cucumber::messages::test_run_finished test_run_finished;
+    cucumber::messages::test_run_started test_run_started;
+    cucumber::messages::test_step_finished test_step_finished;
+    cucumber::messages::test_step_started test_step_started;
+    cucumber::messages::undefined_parameter_type undefined_parameter_type;
+
+    std::string to_string() const override;
+};
+
+}
diff --git a/cpp/include/cucumber/messages/examples.hpp b/cpp/include/cucumber/messages/examples.hpp
new file mode 100644
index 00000000..e256f453
--- /dev/null
+++ b/cpp/include/cucumber/messages/examples.hpp
@@ -0,0 +1,34 @@
+#pragma once
+
+#include <vector>
+
+#include <cucumber/message.hpp>
+
+#include <cucumber/messages/location.hpp>
+#include <cucumber/messages/tag.hpp>
+#include <cucumber/messages/table_row.hpp>
+#include <cucumber/messages/table_row.hpp>
+
+namespace cucumber::messages {
+
+//
+// Represents the Examples message in Cucumber's message protocol
+// @see <a href=https://github.com/cucumber/messages>Github - Cucumber - Messages</a>
+//
+// Generated code
+
+struct examples : cucumber::message
+{
+    cucumber::messages::location location;
+    std::vector<cucumber::messages::tag> tags;
+    std::string keyword;
+    std::string name;
+    std::string description;
+    cucumber::messages::table_row table_header;
+    std::vector<cucumber::messages::table_row> table_body;
+    std::string id;
+
+    std::string to_string() const override;
+};
+
+}
diff --git a/cpp/include/cucumber/messages/exception.hpp b/cpp/include/cucumber/messages/exception.hpp
new file mode 100644
index 00000000..fc4e4a82
--- /dev/null
+++ b/cpp/include/cucumber/messages/exception.hpp
@@ -0,0 +1,25 @@
+#pragma once
+
+#include <vector>
+
+#include <cucumber/message.hpp>
+
+namespace cucumber::messages {
+
+//
+// Represents the Exception message in Cucumber's message protocol
+// @see <a href=https://github.com/cucumber/messages>Github - Cucumber - Messages</a>
+//
+// A simplified representation of an exception
+//
+// Generated code
+
+struct exception : cucumber::message
+{
+    std::string type;
+    std::string message;
+
+    std::string to_string() const override;
+};
+
+}
diff --git a/cpp/include/cucumber/messages/feature.hpp b/cpp/include/cucumber/messages/feature.hpp
new file mode 100644
index 00000000..d73675c4
--- /dev/null
+++ b/cpp/include/cucumber/messages/feature.hpp
@@ -0,0 +1,32 @@
+#pragma once
+
+#include <vector>
+
+#include <cucumber/message.hpp>
+
+#include <cucumber/messages/location.hpp>
+#include <cucumber/messages/tag.hpp>
+#include <cucumber/messages/feature_child.hpp>
+
+namespace cucumber::messages {
+
+//
+// Represents the Feature message in Cucumber's message protocol
+// @see <a href=https://github.com/cucumber/messages>Github - Cucumber - Messages</a>
+//
+// Generated code
+
+struct feature : cucumber::message
+{
+    cucumber::messages::location location;
+    std::vector<cucumber::messages::tag> tags;
+    std::string language;
+    std::string keyword;
+    std::string name;
+    std::string description;
+    std::vector<cucumber::messages::feature_child> children;
+
+    std::string to_string() const override;
+};
+
+}
diff --git a/cpp/include/cucumber/messages/feature_child.hpp b/cpp/include/cucumber/messages/feature_child.hpp
new file mode 100644
index 00000000..009970a6
--- /dev/null
+++ b/cpp/include/cucumber/messages/feature_child.hpp
@@ -0,0 +1,30 @@
+#pragma once
+
+#include <vector>
+
+#include <cucumber/message.hpp>
+
+#include <cucumber/messages/rule.hpp>
+#include <cucumber/messages/background.hpp>
+#include <cucumber/messages/scenario.hpp>
+
+namespace cucumber::messages {
+
+//
+// Represents the FeatureChild message in Cucumber's message protocol
+// @see <a href=https://github.com/cucumber/messages>Github - Cucumber - Messages</a>
+//
+// A child node of a `Feature` node
+//
+// Generated code
+
+struct feature_child : cucumber::message
+{
+    cucumber::messages::rule rule;
+    cucumber::messages::background background;
+    cucumber::messages::scenario scenario;
+
+    std::string to_string() const override;
+};
+
+}
diff --git a/cpp/include/cucumber/messages/gherkin_document.hpp b/cpp/include/cucumber/messages/gherkin_document.hpp
new file mode 100644
index 00000000..a832a469
--- /dev/null
+++ b/cpp/include/cucumber/messages/gherkin_document.hpp
@@ -0,0 +1,34 @@
+#pragma once
+
+#include <vector>
+
+#include <cucumber/message.hpp>
+
+#include <cucumber/messages/feature.hpp>
+#include <cucumber/messages/comment.hpp>
+
+namespace cucumber::messages {
+
+//
+// Represents the GherkinDocument message in Cucumber's message protocol
+// @see <a href=https://github.com/cucumber/messages>Github - Cucumber - Messages</a>
+//
+// The [AST](https://en.wikipedia.org/wiki/Abstract_syntax_tree) of a Gherkin document.
+// Cucumber implementations should *not* depend on `GherkinDocument` or any of its
+// children for execution - use [Pickle](#io.cucumber.messages.Pickle) instead.
+//
+// The only consumers of `GherkinDocument` should only be formatters that produce
+// "rich" output, resembling the original Gherkin document.
+//
+// Generated code
+
+struct gherkin_document : cucumber::message
+{
+    std::string uri;
+    cucumber::messages::feature feature;
+    std::vector<cucumber::messages::comment> comments;
+
+    std::string to_string() const override;
+};
+
+}
diff --git a/cpp/include/cucumber/messages/git.hpp b/cpp/include/cucumber/messages/git.hpp
new file mode 100644
index 00000000..c184048b
--- /dev/null
+++ b/cpp/include/cucumber/messages/git.hpp
@@ -0,0 +1,28 @@
+#pragma once
+
+#include <vector>
+
+#include <cucumber/message.hpp>
+
+namespace cucumber::messages {
+
+//
+// Represents the Git message in Cucumber's message protocol
+// @see <a href=https://github.com/cucumber/messages>Github - Cucumber - Messages</a>
+//
+// Information about Git, provided by the Build/CI server as environment
+// variables.
+//
+// Generated code
+
+struct git : cucumber::message
+{
+    std::string remote;
+    std::string revision;
+    std::string branch;
+    std::string tag;
+
+    std::string to_string() const override;
+};
+
+}
diff --git a/cpp/include/cucumber/messages/group.hpp b/cpp/include/cucumber/messages/group.hpp
new file mode 100644
index 00000000..1b1d4e33
--- /dev/null
+++ b/cpp/include/cucumber/messages/group.hpp
@@ -0,0 +1,26 @@
+#pragma once
+
+#include <vector>
+
+#include <cucumber/message.hpp>
+
+#include <cucumber/messages/group.hpp>
+
+namespace cucumber::messages {
+
+//
+// Represents the Group message in Cucumber's message protocol
+// @see <a href=https://github.com/cucumber/messages>Github - Cucumber - Messages</a>
+//
+// Generated code
+
+struct group : cucumber::message
+{
+    std::vector<cucumber::messages::group> children;
+    std::size_t start;
+    std::string value;
+
+    std::string to_string() const override;
+};
+
+}
diff --git a/cpp/include/cucumber/messages/hook.hpp b/cpp/include/cucumber/messages/hook.hpp
new file mode 100644
index 00000000..319c9bd5
--- /dev/null
+++ b/cpp/include/cucumber/messages/hook.hpp
@@ -0,0 +1,27 @@
+#pragma once
+
+#include <vector>
+
+#include <cucumber/message.hpp>
+
+#include <cucumber/messages/source_reference.hpp>
+
+namespace cucumber::messages {
+
+//
+// Represents the Hook message in Cucumber's message protocol
+// @see <a href=https://github.com/cucumber/messages>Github - Cucumber - Messages</a>
+//
+// Generated code
+
+struct hook : cucumber::message
+{
+    std::string id;
+    std::string name;
+    cucumber::messages::source_reference source_reference;
+    std::string tag_expression;
+
+    std::string to_string() const override;
+};
+
+}
diff --git a/cpp/include/cucumber/messages/java_method.hpp b/cpp/include/cucumber/messages/java_method.hpp
new file mode 100644
index 00000000..8ebcf0b1
--- /dev/null
+++ b/cpp/include/cucumber/messages/java_method.hpp
@@ -0,0 +1,24 @@
+#pragma once
+
+#include <vector>
+
+#include <cucumber/message.hpp>
+
+namespace cucumber::messages {
+
+//
+// Represents the JavaMethod message in Cucumber's message protocol
+// @see <a href=https://github.com/cucumber/messages>Github - Cucumber - Messages</a>
+//
+// Generated code
+
+struct java_method : cucumber::message
+{
+    std::string class_name;
+    std::string method_name;
+    std::vector<std::string> method_parameter_types;
+
+    std::string to_string() const override;
+};
+
+}
diff --git a/cpp/include/cucumber/messages/java_stack_trace_element.hpp b/cpp/include/cucumber/messages/java_stack_trace_element.hpp
new file mode 100644
index 00000000..f782df84
--- /dev/null
+++ b/cpp/include/cucumber/messages/java_stack_trace_element.hpp
@@ -0,0 +1,24 @@
+#pragma once
+
+#include <vector>
+
+#include <cucumber/message.hpp>
+
+namespace cucumber::messages {
+
+//
+// Represents the JavaStackTraceElement message in Cucumber's message protocol
+// @see <a href=https://github.com/cucumber/messages>Github - Cucumber - Messages</a>
+//
+// Generated code
+
+struct java_stack_trace_element : cucumber::message
+{
+    std::string class_name;
+    std::string file_name;
+    std::string method_name;
+
+    std::string to_string() const override;
+};
+
+}
diff --git a/cpp/include/cucumber/messages/location.hpp b/cpp/include/cucumber/messages/location.hpp
new file mode 100644
index 00000000..5348eb7f
--- /dev/null
+++ b/cpp/include/cucumber/messages/location.hpp
@@ -0,0 +1,25 @@
+#pragma once
+
+#include <vector>
+
+#include <cucumber/message.hpp>
+
+namespace cucumber::messages {
+
+//
+// Represents the Location message in Cucumber's message protocol
+// @see <a href=https://github.com/cucumber/messages>Github - Cucumber - Messages</a>
+//
+// Points to a line and a column in a text file
+//
+// Generated code
+
+struct location : cucumber::message
+{
+    std::size_t line;
+    std::size_t column;
+
+    std::string to_string() const override;
+};
+
+}
diff --git a/cpp/include/cucumber/messages/meta.hpp b/cpp/include/cucumber/messages/meta.hpp
new file mode 100644
index 00000000..18d33892
--- /dev/null
+++ b/cpp/include/cucumber/messages/meta.hpp
@@ -0,0 +1,36 @@
+#pragma once
+
+#include <vector>
+
+#include <cucumber/message.hpp>
+
+#include <cucumber/messages/product.hpp>
+#include <cucumber/messages/product.hpp>
+#include <cucumber/messages/product.hpp>
+#include <cucumber/messages/product.hpp>
+#include <cucumber/messages/ci.hpp>
+
+namespace cucumber::messages {
+
+//
+// Represents the Meta message in Cucumber's message protocol
+// @see <a href=https://github.com/cucumber/messages>Github - Cucumber - Messages</a>
+//
+// This message contains meta information about the environment. Consumers can use
+// this for various purposes.
+//
+// Generated code
+
+struct meta : cucumber::message
+{
+    std::string protocol_version;
+    cucumber::messages::product implementation;
+    cucumber::messages::product runtime;
+    cucumber::messages::product os;
+    cucumber::messages::product cpu;
+    cucumber::messages::ci ci;
+
+    std::string to_string() const override;
+};
+
+}
diff --git a/cpp/include/cucumber/messages/parameter_type.hpp b/cpp/include/cucumber/messages/parameter_type.hpp
new file mode 100644
index 00000000..d753c4b6
--- /dev/null
+++ b/cpp/include/cucumber/messages/parameter_type.hpp
@@ -0,0 +1,29 @@
+#pragma once
+
+#include <vector>
+
+#include <cucumber/message.hpp>
+
+#include <cucumber/messages/source_reference.hpp>
+
+namespace cucumber::messages {
+
+//
+// Represents the ParameterType message in Cucumber's message protocol
+// @see <a href=https://github.com/cucumber/messages>Github - Cucumber - Messages</a>
+//
+// Generated code
+
+struct parameter_type : cucumber::message
+{
+    std::string name;
+    std::vector<std::string> regular_expressions;
+    bool prefer_for_regular_expression_match;
+    bool use_for_snippets;
+    std::string id;
+    cucumber::messages::source_reference source_reference;
+
+    std::string to_string() const override;
+};
+
+}
diff --git a/cpp/include/cucumber/messages/parse_error.hpp b/cpp/include/cucumber/messages/parse_error.hpp
new file mode 100644
index 00000000..30c72e9a
--- /dev/null
+++ b/cpp/include/cucumber/messages/parse_error.hpp
@@ -0,0 +1,25 @@
+#pragma once
+
+#include <vector>
+
+#include <cucumber/message.hpp>
+
+#include <cucumber/messages/source_reference.hpp>
+
+namespace cucumber::messages {
+
+//
+// Represents the ParseError message in Cucumber's message protocol
+// @see <a href=https://github.com/cucumber/messages>Github - Cucumber - Messages</a>
+//
+// Generated code
+
+struct parse_error : cucumber::message
+{
+    cucumber::messages::source_reference source;
+    std::string message;
+
+    std::string to_string() const override;
+};
+
+}
diff --git a/cpp/include/cucumber/messages/pickle.hpp b/cpp/include/cucumber/messages/pickle.hpp
new file mode 100644
index 00000000..6214e242
--- /dev/null
+++ b/cpp/include/cucumber/messages/pickle.hpp
@@ -0,0 +1,44 @@
+#pragma once
+
+#include <vector>
+
+#include <cucumber/message.hpp>
+
+#include <cucumber/messages/pickle_step.hpp>
+#include <cucumber/messages/pickle_tag.hpp>
+
+namespace cucumber::messages {
+
+//
+// Represents the Pickle message in Cucumber's message protocol
+// @see <a href=https://github.com/cucumber/messages>Github - Cucumber - Messages</a>
+//
+// //// Pickles
+//
+// A `Pickle` represents a template for a `TestCase`. It is typically derived
+// from another format, such as [GherkinDocument](#io.cucumber.messages.GherkinDocument).
+// In the future a `Pickle` may be derived from other formats such as Markdown or
+// Excel files.
+//
+// By making `Pickle` the main data structure Cucumber uses for execution, the
+// implementation of Cucumber itself becomes simpler, as it doesn't have to deal
+// with the complex structure of a [GherkinDocument](#io.cucumber.messages.GherkinDocument).
+//
+// Each `PickleStep` of a `Pickle` is matched with a `StepDefinition` to create a `TestCase`
+//
+// Generated code
+
+struct pickle : cucumber::message
+{
+    std::string id;
+    std::string uri;
+    std::string name;
+    std::string language;
+    std::vector<cucumber::messages::pickle_step> steps;
+    std::vector<cucumber::messages::pickle_tag> tags;
+    std::vector<std::string> ast_node_ids;
+
+    std::string to_string() const override;
+};
+
+}
diff --git a/cpp/include/cucumber/messages/pickle_doc_string.hpp b/cpp/include/cucumber/messages/pickle_doc_string.hpp
new file mode 100644
index 00000000..50d70294
--- /dev/null
+++ b/cpp/include/cucumber/messages/pickle_doc_string.hpp
@@ -0,0 +1,23 @@
+#pragma once
+
+#include <vector>
+
+#include <cucumber/message.hpp>
+
+namespace cucumber::messages {
+
+//
+// Represents the PickleDocString message in Cucumber's message protocol
+// @see <a href=https://github.com/cucumber/messages>Github - Cucumber - Messages</a>
+//
+// Generated code
+
+struct pickle_doc_string : cucumber::message
+{
+    std::string media_type;
+    std::string content;
+
+    std::string to_string() const override;
+};
+
+}
diff --git a/cpp/include/cucumber/messages/pickle_step.hpp b/cpp/include/cucumber/messages/pickle_step.hpp
new file mode 100644
index 00000000..69e05b8b
--- /dev/null
+++ b/cpp/include/cucumber/messages/pickle_step.hpp
@@ -0,0 +1,31 @@
+#pragma once
+
+#include <vector>
+
+#include <cucumber/message.hpp>
+
+#include <cucumber/messages/pickle_step_argument.hpp>
+#include <cucumber/messages/pickle_step_type.hpp>
+
+namespace cucumber::messages {
+
+//
+// Represents the PickleStep message in Cucumber's message protocol
+// @see <a href=https://github.com/cucumber/messages>Github - Cucumber - Messages</a>
+//
+// An executable step
+//
+// Generated code
+
+struct pickle_step : cucumber::message
+{
+    cucumber::messages::pickle_step_argument argument;
+    std::vector<std::string> ast_node_ids;
+    std::string id;
+    cucumber::messages::pickle_step_type type;
+    std::string text;
+
+    std::string to_string() const override;
+};
+
+}
diff --git a/cpp/include/cucumber/messages/pickle_step_argument.hpp b/cpp/include/cucumber/messages/pickle_step_argument.hpp
new file mode 100644
index 00000000..0c30f64b
--- /dev/null
+++ b/cpp/include/cucumber/messages/pickle_step_argument.hpp
@@ -0,0 +1,28 @@
+#pragma once
+
+#include <vector>
+
+#include <cucumber/message.hpp>
+
+#include <cucumber/messages/pickle_doc_string.hpp>
+#include <cucumber/messages/pickle_table.hpp>
+
+namespace cucumber::messages {
+
+//
+// Represents the PickleStepArgument message in Cucumber's message protocol
+// @see <a href=https://github.com/cucumber/messages>Github - Cucumber - Messages</a>
+//
+// An optional argument
+//
+// Generated code
+
+struct pickle_step_argument : cucumber::message
+{
+    cucumber::messages::pickle_doc_string doc_string;
+    cucumber::messages::pickle_table data_table;
+
+    std::string to_string() const override;
+};
+
+}
diff --git a/cpp/include/cucumber/messages/pickle_step_type.hpp b/cpp/include/cucumber/messages/pickle_step_type.hpp
new file mode 100644
index 00000000..40a7f083
--- /dev/null
+++ b/cpp/include/cucumber/messages/pickle_step_type.hpp
@@ -0,0 +1,21 @@
+#pragma once
+
+#include <string_view>
+
+namespace cucumber::messages {
+
+enum class pickle_step_type
+{
+    UNKNOWN,
+    CONTEXT,
+    ACTION,
+    OUTCOME
+};
+
+std::string_view
+to_string(pickle_step_type v);
+
+std::ostream&
+operator<<(std::ostream& os, pickle_step_type v);
+
+}
diff --git a/cpp/include/cucumber/messages/pickle_table.hpp b/cpp/include/cucumber/messages/pickle_table.hpp
new file mode 100644
index 00000000..ccde87e6
--- /dev/null
+++ b/cpp/include/cucumber/messages/pickle_table.hpp
@@ -0,0 +1,24 @@
+#pragma once
+
+#include <vector>
+
+#include <cucumber/message.hpp>
+
+#include <cucumber/messages/pickle_table_row.hpp>
+
+namespace cucumber::messages {
+
+//
+// Represents the PickleTable message in Cucumber's message protocol
+// @see <a href=https://github.com/cucumber/messages>Github - Cucumber - Messages</a>
+//
+// Generated code
+
+struct pickle_table : cucumber::message
+{
+    std::vector<cucumber::messages::pickle_table_row> rows;
+
+    std::string to_string() const override;
+};
+
+}
diff --git a/cpp/include/cucumber/messages/pickle_table_cell.hpp b/cpp/include/cucumber/messages/pickle_table_cell.hpp
new file mode 100644
index 00000000..fdab3447
--- /dev/null
+++ b/cpp/include/cucumber/messages/pickle_table_cell.hpp
@@ -0,0 +1,22 @@
+#pragma once
+
+#include <vector>
+
+#include <cucumber/message.hpp>
+
+namespace cucumber::messages {
+
+//
+// Represents the PickleTableCell message in Cucumber's message protocol
+// @see <a href=https://github.com/cucumber/messages>Github - Cucumber - Messages</a>
+//
+// Generated code
+
+struct pickle_table_cell : cucumber::message
+{
+    std::string value;
+
+    std::string to_string() const override;
+};
+
+}
diff --git a/cpp/include/cucumber/messages/pickle_table_row.hpp b/cpp/include/cucumber/messages/pickle_table_row.hpp
new file mode 100644
index 00000000..22a4479e
--- /dev/null
+++ b/cpp/include/cucumber/messages/pickle_table_row.hpp
@@ -0,0 +1,24 @@
+#pragma once
+
+#include <vector>
+
+#include <cucumber/message.hpp>
+
+#include <cucumber/messages/pickle_table_cell.hpp>
+
+namespace cucumber::messages {
+
+//
+// Represents the PickleTableRow message in Cucumber's message protocol
+// @see <a href=https://github.com/cucumber/messages>Github - Cucumber - Messages</a>
+//
+// Generated code
+
+struct pickle_table_row : cucumber::message
+{
+    std::vector<cucumber::messages::pickle_table_cell> cells;
+
+    std::string to_string() const override;
+};
+
+}
diff --git a/cpp/include/cucumber/messages/pickle_tag.hpp b/cpp/include/cucumber/messages/pickle_tag.hpp
new file mode 100644
index 00000000..f7ff0518
--- /dev/null
+++ b/cpp/include/cucumber/messages/pickle_tag.hpp
@@ -0,0 +1,25 @@
+#pragma once
+
+#include <vector>
+
+#include <cucumber/message.hpp>
+
+namespace cucumber::messages {
+
+//
+// Represents the PickleTag message in Cucumber's message protocol
+// @see <a href=https://github.com/cucumber/messages>Github - Cucumber - Messages</a>
+//
+// A tag
+//
+// Generated code
+
+struct pickle_tag : cucumber::message
+{
+    std::string name;
+    std::string ast_node_id;
+
+    std::string to_string() const override;
+};
+
+}
diff --git a/cpp/include/cucumber/messages/product.hpp b/cpp/include/cucumber/messages/product.hpp
new file mode 100644
index 00000000..8aee270b
--- /dev/null
+++ b/cpp/include/cucumber/messages/product.hpp
@@ -0,0 +1,25 @@
+#pragma once
+
+#include <vector>
+
+#include <cucumber/message.hpp>
+
+namespace cucumber::messages {
+
+//
+// Represents the Product message in Cucumber's message protocol
+// @see <a href=https://github.com/cucumber/messages>Github - Cucumber - Messages</a>
+//
+// Used to describe various properties of Meta
+//
+// Generated code
+
+struct product : cucumber::message
+{
+    std::string name;
+    std::string version;
+
+    std::string to_string() const override;
+};
+
+}
diff --git a/cpp/include/cucumber/messages/rule.hpp b/cpp/include/cucumber/messages/rule.hpp
new file mode 100644
index 00000000..124a9f3d
--- /dev/null
+++ b/cpp/include/cucumber/messages/rule.hpp
@@ -0,0 +1,32 @@
+#pragma once
+
+#include <vector>
+
+#include <cucumber/message.hpp>
+
+#include <cucumber/messages/location.hpp>
+#include <cucumber/messages/tag.hpp>
+#include <cucumber/messages/rule_child.hpp>
+
+namespace cucumber::messages {
+
+//
+// Represents the Rule message in Cucumber's message protocol
+// @see <a href=https://github.com/cucumber/messages>Github - Cucumber - Messages</a>
+//
+// Generated code
+
+struct rule : cucumber::message
+{
+    cucumber::messages::location location;
+    std::vector<cucumber::messages::tag> tags;
+    std::string keyword;
+    std::string name;
+    std::string description;
+    std::vector<cucumber::messages::rule_child> children;
+    std::string id;
+
+    std::string to_string() const override;
+};
+
+}
diff --git a/cpp/include/cucumber/messages/rule_child.hpp b/cpp/include/cucumber/messages/rule_child.hpp
new file mode 100644
index 00000000..ef2e62b4
--- /dev/null
+++ b/cpp/include/cucumber/messages/rule_child.hpp
@@ -0,0 +1,28 @@
+#pragma once
+
+#include <vector>
+
+#include <cucumber/message.hpp>
+
+#include <cucumber/messages/background.hpp>
+#include <cucumber/messages/scenario.hpp>
+
+namespace cucumber::messages {
+
+//
+// Represents the RuleChild message in Cucumber's message protocol
+// @see <a href=https://github.com/cucumber/messages>Github - Cucumber - Messages</a>
+//
+// A child node of a `Rule` node
+//
+// Generated code
+
+struct rule_child : cucumber::message
+{
+    cucumber::messages::background background;
+    cucumber::messages::scenario scenario;
+
+    std::string to_string() const override;
+};
+
+}
diff --git a/cpp/include/cucumber/messages/scenario.hpp b/cpp/include/cucumber/messages/scenario.hpp
new file mode 100644
index 00000000..2eeb7ee4
--- /dev/null
+++ b/cpp/include/cucumber/messages/scenario.hpp
@@ -0,0 +1,34 @@
+#pragma once
+
+#include <vector>
+
+#include <cucumber/message.hpp>
+
+#include <cucumber/messages/location.hpp>
+#include <cucumber/messages/tag.hpp>
+#include <cucumber/messages/step.hpp>
+#include <cucumber/messages/examples.hpp>
+
+namespace cucumber::messages {
+
+//
+// Represents the Scenario message in Cucumber's message protocol
+// @see <a href=https://github.com/cucumber/messages>Github - Cucumber - Messages</a>
+//
+// Generated code
+
+struct scenario : cucumber::message
+{
+    cucumber::messages::location location;
+    std::vector<cucumber::messages::tag> tags;
+    std::string keyword;
+    std::string name;
+    std::string description;
+    std::vector<cucumber::messages::step> steps;
+    std::vector<cucumber::messages::examples> examples;
+    std::string id;
+
+    std::string to_string() const override;
+};
+
+}
diff --git a/cpp/include/cucumber/messages/source.hpp b/cpp/include/cucumber/messages/source.hpp
new file mode 100644
index 00000000..49113881
--- /dev/null
+++ b/cpp/include/cucumber/messages/source.hpp
@@ -0,0 +1,30 @@
+#pragma once
+
+#include <vector>
+
+#include <cucumber/message.hpp>
+
+#include <cucumber/messages/source_media_type.hpp>
+
+namespace cucumber::messages {
+
+//
+// Represents the Source message in Cucumber's message protocol
+// @see <a href=https://github.com/cucumber/messages>Github - Cucumber - Messages</a>
+//
+// //// Source
+//
+// A source file, typically a Gherkin document or Java/Ruby/JavaScript source code
+//
+// Generated code
+
+struct source : cucumber::message
+{
+    std::string uri;
+    std::string data;
+    cucumber::messages::source_media_type media_type;
+
+    std::string to_string() const override;
+};
+
+}
diff --git a/cpp/include/cucumber/messages/source_media_type.hpp b/cpp/include/cucumber/messages/source_media_type.hpp
new file mode 100644
index 00000000..9c2f01f2
--- /dev/null
+++ b/cpp/include/cucumber/messages/source_media_type.hpp
@@ -0,0 +1,19 @@
+#pragma once
+
+#include <string_view>
+
+namespace cucumber::messages {
+
+enum class source_media_type
+{
+    TEXT_X_CUCUMBER_GHERKIN_PLAIN,
+    TEXT_X_CUCUMBER_GHERKIN_MARKDOWN
+};
+
+std::string_view
+to_string(source_media_type v);
+
+std::ostream&
+operator<<(std::ostream& os, source_media_type v);
+
+}
diff --git a/cpp/include/cucumber/messages/source_reference.hpp b/cpp/include/cucumber/messages/source_reference.hpp
new file mode 100644
index 00000000..0dde140d
--- /dev/null
+++ b/cpp/include/cucumber/messages/source_reference.hpp
@@ -0,0 +1,32 @@
+#pragma once
+
+#include <vector>
+
+#include <cucumber/message.hpp>
+
+#include <cucumber/messages/java_method.hpp>
+#include <cucumber/messages/java_stack_trace_element.hpp>
+#include <cucumber/messages/location.hpp>
+
+namespace cucumber::messages {
+
+//
+// Represents the SourceReference message in Cucumber's message protocol
+// @see <a href=https://github.com/cucumber/messages>Github - Cucumber - Messages</a>
+//
+// Points to a [Source](#io.cucumber.messages.Source) identified by `uri` and a
+// [Location](#io.cucumber.messages.Location) within that file.
+//
+// Generated code
+
+struct source_reference : cucumber::message
+{
+    std::string uri;
+    cucumber::messages::java_method java_method;
+    cucumber::messages::java_stack_trace_element java_stack_trace_element;
+    cucumber::messages::location location;
+
+    std::string to_string() const override;
+};
+
+}
diff --git a/cpp/include/cucumber/messages/step.hpp b/cpp/include/cucumber/messages/step.hpp
new file mode 100644
index 00000000..fe2ec9a1
--- /dev/null
+++ b/cpp/include/cucumber/messages/step.hpp
@@ -0,0 +1,35 @@
+#pragma once
+
+#include <vector>
+
+#include <cucumber/message.hpp>
+
+#include <cucumber/messages/location.hpp>
+#include <cucumber/messages/step_keyword_type.hpp>
+#include <cucumber/messages/doc_string.hpp>
+#include <cucumber/messages/data_table.hpp>
+
+namespace cucumber::messages {
+
+//
+// Represents the Step message in Cucumber's message protocol
+// @see <a href=https://github.com/cucumber/messages>Github - Cucumber - Messages</a>
+//
+// A step
+//
+// Generated code
+
+struct step : cucumber::message
+{
+    cucumber::messages::location location;
+    std::string keyword;
+    cucumber::messages::step_keyword_type keyword_type;
+    std::string text;
+    cucumber::messages::doc_string doc_string;
+    cucumber::messages::data_table data_table;
+    std::string id;
+
+    std::string to_string() const override;
+};
+
+}
diff --git a/cpp/include/cucumber/messages/step_definition.hpp b/cpp/include/cucumber/messages/step_definition.hpp
new file mode 100644
index 00000000..c3f7fa9f
--- /dev/null
+++ b/cpp/include/cucumber/messages/step_definition.hpp
@@ -0,0 +1,27 @@
+#pragma once
+
+#include <vector>
+
+#include <cucumber/message.hpp>
+
+#include <cucumber/messages/step_definition_pattern.hpp>
+#include <cucumber/messages/source_reference.hpp>
+
+namespace cucumber::messages {
+
+//
+// Represents the StepDefinition message in Cucumber's message protocol
+// @see <a href=https://github.com/cucumber/messages>Github - Cucumber - Messages</a>
+//
+// Generated code
+
+struct step_definition : cucumber::message
+{
+    std::string id;
+    cucumber::messages::step_definition_pattern pattern;
+    cucumber::messages::source_reference source_reference;
+
+    std::string to_string() const override;
+};
+
+}
diff --git a/cpp/include/cucumber/messages/step_definition_pattern.hpp b/cpp/include/cucumber/messages/step_definition_pattern.hpp
new file mode 100644
index 00000000..9477e6f5
--- /dev/null
+++ b/cpp/include/cucumber/messages/step_definition_pattern.hpp
@@ -0,0 +1,25 @@
+#pragma once
+
+#include <vector>
+
+#include <cucumber/message.hpp>
+
+#include <cucumber/messages/step_definition_pattern_type.hpp>
+
+namespace cucumber::messages {
+
+//
+// Represents the StepDefinitionPattern message in Cucumber's message protocol
+// @see <a href=https://github.com/cucumber/messages>Github - Cucumber - Messages</a>
+//
+// Generated code
+
+struct step_definition_pattern : cucumber::message
+{
+    std::string source;
+    cucumber::messages::step_definition_pattern_type type;
+
+    std::string to_string() const override;
+};
+
+}
diff --git a/cpp/include/cucumber/messages/step_definition_pattern_type.hpp b/cpp/include/cucumber/messages/step_definition_pattern_type.hpp
new file mode 100644
index 00000000..38ac5d52
--- /dev/null
+++ b/cpp/include/cucumber/messages/step_definition_pattern_type.hpp
@@ -0,0 +1,19 @@
+#pragma once
+
+#include <string_view>
+
+namespace cucumber::messages {
+
+enum class step_definition_pattern_type
+{
+    CUCUMBER_EXPRESSION,
+    REGULAR_EXPRESSION
+};
+
+std::string_view
+to_string(step_definition_pattern_type v);
+
+std::ostream&
+operator<<(std::ostream& os, step_definition_pattern_type v);
+
+}
diff --git a/cpp/include/cucumber/messages/step_keyword_type.hpp b/cpp/include/cucumber/messages/step_keyword_type.hpp
new file mode 100644
index 00000000..3ad19c66
--- /dev/null
+++ b/cpp/include/cucumber/messages/step_keyword_type.hpp
@@ -0,0 +1,22 @@
+#pragma once
+
+#include <string_view>
+
+namespace cucumber::messages {
+
+enum class step_keyword_type
+{
+    UNKNOWN,
+    CONTEXT,
+    ACTION,
+    OUTCOME,
+    CONJUNCTION
+};
+
+std::string_view
+to_string(step_keyword_type v);
+
+std::ostream&
+operator<<(std::ostream& os, step_keyword_type v);
+
+}
diff --git a/cpp/include/cucumber/messages/step_match_argument.hpp b/cpp/include/cucumber/messages/step_match_argument.hpp
new file mode 100644
index 00000000..7d7af9c1
--- /dev/null
+++ b/cpp/include/cucumber/messages/step_match_argument.hpp
@@ -0,0 +1,32 @@
+#pragma once
+
+#include <vector>
+
+#include <cucumber/message.hpp>
+
+#include <cucumber/messages/group.hpp>
+
+namespace cucumber::messages {
+
+//
+// Represents the StepMatchArgument message in Cucumber's message protocol
+// @see <a href=https://github.com/cucumber/messages>Github - Cucumber - Messages</a>
+//
+// Represents a single argument extracted from a step match and passed to a step definition.
+// This is used for the following purposes:
+// - Construct an argument to pass to a step definition (possibly through a parameter type transform)
+// - Highlight the matched parameter in rich formatters such as the HTML formatter
+//
+// This message closely matches the `Argument` class in the `cucumber-expressions` library.
+//
+// Generated code
+
+struct step_match_argument : cucumber::message
+{
+    cucumber::messages::group group;
+    std::string parameter_type_name;
+
+    std::string to_string() const override;
+};
+
+}
diff --git a/cpp/include/cucumber/messages/step_match_arguments_list.hpp b/cpp/include/cucumber/messages/step_match_arguments_list.hpp
new file mode 100644
index 00000000..acccaa1d
--- /dev/null
+++ b/cpp/include/cucumber/messages/step_match_arguments_list.hpp
@@ -0,0 +1,24 @@
+#pragma once
+
+#include <vector>
+
+#include <cucumber/message.hpp>
+
+#include <cucumber/messages/step_match_argument.hpp>
+
+namespace cucumber::messages {
+
+//
+// Represents the StepMatchArgumentsList message in Cucumber's message protocol
+// @see <a href=https://github.com/cucumber/messages>Github - Cucumber - Messages</a>
+//
+// Generated code
+
+struct step_match_arguments_list : cucumber::message
+{
+    std::vector<cucumber::messages::step_match_argument> step_match_arguments;
+
+    std::string to_string() const override;
+};
+
+}
diff --git a/cpp/include/cucumber/messages/table_cell.hpp b/cpp/include/cucumber/messages/table_cell.hpp
new file mode 100644
index 00000000..acd7810e
--- /dev/null
+++ b/cpp/include/cucumber/messages/table_cell.hpp
@@ -0,0 +1,27 @@
+#pragma once
+
+#include <vector>
+
+#include <cucumber/message.hpp>
+
+#include <cucumber/messages/location.hpp>
+
+namespace cucumber::messages {
+
+//
+// Represents the TableCell message in Cucumber's message protocol
+// @see <a href=https://github.com/cucumber/messages>Github - Cucumber - Messages</a>
+//
+// A cell in a `TableRow`
+//
+// Generated code
+
+struct table_cell : cucumber::message
+{
+    cucumber::messages::location location;
+    std::string value;
+
+    std::string to_string() const override;
+};
+
+}
diff --git a/cpp/include/cucumber/messages/table_row.hpp b/cpp/include/cucumber/messages/table_row.hpp
new file mode 100644
index 00000000..3e0b3cb6
--- /dev/null
+++ b/cpp/include/cucumber/messages/table_row.hpp
@@ -0,0 +1,29 @@
+#pragma once
+
+#include <vector>
+
+#include <cucumber/message.hpp>
+
+#include <cucumber/messages/location.hpp>
+#include <cucumber/messages/table_cell.hpp>
+
+namespace cucumber::messages {
+
+//
+// Represents the TableRow message in Cucumber's message protocol
+// @see <a href=https://github.com/cucumber/messages>Github - Cucumber - Messages</a>
+//
+// A row in a table
+//
+// Generated code
+
+struct table_row : cucumber::message
+{
+    cucumber::messages::location location;
+    std::vector<cucumber::messages::table_cell> cells;
+    std::string id;
+
+    std::string to_string() const override;
+};
+
+}
diff --git a/cpp/include/cucumber/messages/tag.hpp b/cpp/include/cucumber/messages/tag.hpp
new file mode 100644
index 00000000..b5566a35
--- /dev/null
+++ b/cpp/include/cucumber/messages/tag.hpp
@@ -0,0 +1,28 @@
+#pragma once
+
+#include <vector>
+
+#include <cucumber/message.hpp>
+
+#include <cucumber/messages/location.hpp>
+
+namespace cucumber::messages {
+
+//
+// Represents the Tag message in Cucumber's message protocol
+// @see <a href=https://github.com/cucumber/messages>Github - Cucumber - Messages</a>
+//
+// A tag
+//
+// Generated code
+
+struct tag : cucumber::message
+{
+    cucumber::messages::location location;
+    std::string name;
+    std::string id;
+
+    std::string to_string() const override;
+};
+
+}
diff --git a/cpp/include/cucumber/messages/test_case.hpp b/cpp/include/cucumber/messages/test_case.hpp
new file mode 100644
index 00000000..69ab921b
--- /dev/null
+++ b/cpp/include/cucumber/messages/test_case.hpp
@@ -0,0 +1,30 @@
+#pragma once
+
+#include <vector>
+
+#include <cucumber/message.hpp>
+
+#include <cucumber/messages/test_step.hpp>
+
+namespace cucumber::messages {
+
+//
+// Represents the TestCase message in Cucumber's message protocol
+// @see <a href=https://github.com/cucumber/messages>Github - Cucumber - Messages</a>
+//
+// //// TestCases
+//
+// A `TestCase` contains a sequence of `TestStep`s.
+//
+// Generated code
+
+struct test_case : cucumber::message
+{
+    std::string id;
+    std::string pickle_id;
+    std::vector<cucumber::messages::test_step> test_steps;
+
+    std::string to_string() const override;
+};
+
+}
diff --git a/cpp/include/cucumber/messages/test_case_finished.hpp b/cpp/include/cucumber/messages/test_case_finished.hpp
new file mode 100644
index 00000000..ca474b55
--- /dev/null
+++ b/cpp/include/cucumber/messages/test_case_finished.hpp
@@ -0,0 +1,26 @@
+#pragma once
+
+#include <vector>
+
+#include <cucumber/message.hpp>
+
+#include <cucumber/messages/timestamp.hpp>
+
+namespace cucumber::messages {
+
+//
+// Represents the TestCaseFinished message in Cucumber's message protocol
+// @see <a href=https://github.com/cucumber/messages>Github - Cucumber - Messages</a>
+//
+// Generated code
+
+struct test_case_finished : cucumber::message
+{
+    std::string test_case_started_id;
+    cucumber::messages::timestamp timestamp;
+    bool will_be_retried;
+
+    std::string to_string() const override;
+};
+
+}
diff --git a/cpp/include/cucumber/messages/test_case_started.hpp b/cpp/include/cucumber/messages/test_case_started.hpp
new file mode 100644
index 00000000..5460a331
--- /dev/null
+++ b/cpp/include/cucumber/messages/test_case_started.hpp
@@ -0,0 +1,28 @@
+#pragma once
+
+#include <vector>
+
+#include <cucumber/message.hpp>
+
+#include <cucumber/messages/timestamp.hpp>
+
+namespace cucumber::messages {
+
+//
+// Represents the TestCaseStarted message in Cucumber's message protocol
+// @see <a href=https://github.com/cucumber/messages>Github - Cucumber - Messages</a>
+//
+// Generated code
+
+struct test_case_started : cucumber::message
+{
+    std::size_t attempt;
+    std::string id;
+    std::string test_case_id;
+    std::string worker_id;
+    cucumber::messages::timestamp timestamp;
+
+    std::string to_string() const override;
+};
+
+}
diff --git a/cpp/include/cucumber/messages/test_run_finished.hpp b/cpp/include/cucumber/messages/test_run_finished.hpp
new file mode 100644
index 00000000..f01b030d
--- /dev/null
+++ b/cpp/include/cucumber/messages/test_run_finished.hpp
@@ -0,0 +1,28 @@
+#pragma once
+
+#include <vector>
+
+#include <cucumber/message.hpp>
+
+#include <cucumber/messages/timestamp.hpp>
+#include <cucumber/messages/exception.hpp>
+
+namespace cucumber::messages {
+
+//
+// Represents the TestRunFinished message in Cucumber's message protocol
+// @see <a href=https://github.com/cucumber/messages>Github - Cucumber - Messages</a>
+//
+// Generated code
+
+struct test_run_finished : cucumber::message
+{
+    std::string message;
+    bool success;
+    cucumber::messages::timestamp timestamp;
+    cucumber::messages::exception exception;
+
+    std::string to_string() const override;
+};
+
+}
diff --git a/cpp/include/cucumber/messages/test_run_started.hpp b/cpp/include/cucumber/messages/test_run_started.hpp
new file mode 100644
index 00000000..9486ebc8
--- /dev/null
+++ b/cpp/include/cucumber/messages/test_run_started.hpp
@@ -0,0 +1,24 @@
+#pragma once
+
+#include <vector>
+
+#include <cucumber/message.hpp>
+
+#include <cucumber/messages/timestamp.hpp>
+
+namespace cucumber::messages {
+
+//
+// Represents the TestRunStarted message in Cucumber's message protocol
+// @see <a href=https://github.com/cucumber/messages>Github - Cucumber - Messages</a>
+//
+// Generated code
+
+struct test_run_started : cucumber::message
+{
+    cucumber::messages::timestamp timestamp;
+
+    std::string to_string() const override;
+};
+
+}
diff --git a/cpp/include/cucumber/messages/test_step.hpp b/cpp/include/cucumber/messages/test_step.hpp
new file mode 100644
index 00000000..2d03d250
--- /dev/null
+++ b/cpp/include/cucumber/messages/test_step.hpp
@@ -0,0 +1,31 @@
+#pragma once
+
+#include <vector>
+
+#include <cucumber/message.hpp>
+
+#include <cucumber/messages/step_match_arguments_list.hpp>
+
+namespace cucumber::messages {
+
+//
+// Represents the TestStep message in Cucumber's message protocol
+// @see <a href=https://github.com/cucumber/messages>Github - Cucumber - Messages</a>
+//
+// A `TestStep` is derived from either a `PickleStep`
+// combined with a `StepDefinition`, or from a `Hook`.
+//
+// Generated code
+
+struct test_step : cucumber::message
+{
+    std::string hook_id;
+    std::string id;
+    std::string pickle_step_id;
+    std::vector<std::string> step_definition_ids;
+    std::vector<cucumber::messages::step_match_arguments_list> step_match_arguments_lists;
+
+    std::string to_string() const override;
+};
+
+}
diff --git a/cpp/include/cucumber/messages/test_step_finished.hpp b/cpp/include/cucumber/messages/test_step_finished.hpp
new file mode 100644
index 00000000..e24cd929
--- /dev/null
+++ b/cpp/include/cucumber/messages/test_step_finished.hpp
@@ -0,0 +1,28 @@
+#pragma once
+
+#include <vector>
+
+#include <cucumber/message.hpp>
+
+#include <cucumber/messages/test_step_result.hpp>
+#include <cucumber/messages/timestamp.hpp>
+
+namespace cucumber::messages {
+
+//
+// Represents the TestStepFinished message in Cucumber's message protocol
+// @see <a href=https://github.com/cucumber/messages>Github - Cucumber - Messages</a>
+//
+// Generated code
+
+struct test_step_finished : cucumber::message
+{
+    std::string test_case_started_id;
+    std::string test_step_id;
+    cucumber::messages::test_step_result test_step_result;
+    cucumber::messages::timestamp timestamp;
+
+    std::string to_string() const override;
+};
+
+}
diff --git a/cpp/include/cucumber/messages/test_step_result.hpp b/cpp/include/cucumber/messages/test_step_result.hpp
new file mode 100644
index 00000000..de5bbe5e
--- /dev/null
+++ b/cpp/include/cucumber/messages/test_step_result.hpp
@@ -0,0 +1,29 @@
+#pragma once
+
+#include <vector>
+
+#include <cucumber/message.hpp>
+
+#include <cucumber/messages/duration.hpp>
+#include <cucumber/messages/test_step_result_status.hpp>
+#include <cucumber/messages/exception.hpp>
+
+namespace cucumber::messages {
+
+//
+// Represents the TestStepResult message in Cucumber's message protocol
+// @see <a href=https://github.com/cucumber/messages>Github - Cucumber - Messages</a>
+//
+// Generated code
+
+struct test_step_result : cucumber::message
+{
+    cucumber::messages::duration duration;
+    std::string message;
+    cucumber::messages::test_step_result_status status;
+    cucumber::messages::exception exception;
+
+    std::string to_string() const override;
+};
+
+}
diff --git a/cpp/include/cucumber/messages/test_step_result_status.hpp b/cpp/include/cucumber/messages/test_step_result_status.hpp
new file mode 100644
index 00000000..ee92d219
--- /dev/null
+++ b/cpp/include/cucumber/messages/test_step_result_status.hpp
@@ -0,0 +1,24 @@
+#pragma once
+
+#include <string_view>
+
+namespace cucumber::messages {
+
+enum class test_step_result_status
+{
+    UNKNOWN,
+    PASSED,
+    SKIPPED,
+    PENDING,
+    UNDEFINED,
+    AMBIGUOUS,
+    FAILED
+};
+
+std::string_view
+to_string(test_step_result_status v);
+
+std::ostream&
+operator<<(std::ostream& os, test_step_result_status v);
+
+}
diff --git a/cpp/include/cucumber/messages/test_step_started.hpp b/cpp/include/cucumber/messages/test_step_started.hpp
new file mode 100644
index 00000000..714cf9a7
--- /dev/null
+++ b/cpp/include/cucumber/messages/test_step_started.hpp
@@ -0,0 +1,26 @@
+#pragma once
+
+#include <vector>
+
+#include <cucumber/message.hpp>
+
+#include <cucumber/messages/timestamp.hpp>
+
+namespace cucumber::messages {
+
+//
+// Represents the TestStepStarted message in Cucumber's message protocol
+// @see <a href=https://github.com/cucumber/messages>Github - Cucumber - Messages</a>
+//
+// Generated code
+
+struct test_step_started : cucumber::message
+{
+    std::string test_case_started_id;
+    std::string test_step_id;
+    cucumber::messages::timestamp timestamp;
+
+    std::string to_string() const override;
+};
+
+}
diff --git a/cpp/include/cucumber/messages/timestamp.hpp b/cpp/include/cucumber/messages/timestamp.hpp
new file mode 100644
index 00000000..e7a7d87b
--- /dev/null
+++ b/cpp/include/cucumber/messages/timestamp.hpp
@@ -0,0 +1,23 @@
+#pragma once
+
+#include <vector>
+
+#include <cucumber/message.hpp>
+
+namespace cucumber::messages {
+
+//
+// Represents the Timestamp message in Cucumber's message protocol
+// @see <a href=https://github.com/cucumber/messages>Github - Cucumber - Messages</a>
+//
+// Generated code
+
+struct timestamp : cucumber::message
+{
+    std::size_t seconds;
+    std::size_t nanos;
+
+    std::string to_string() const override;
+};
+
+}
diff --git a/cpp/include/cucumber/messages/undefined_parameter_type.hpp b/cpp/include/cucumber/messages/undefined_parameter_type.hpp
new file mode 100644
index 00000000..91d5378c
--- /dev/null
+++ b/cpp/include/cucumber/messages/undefined_parameter_type.hpp
@@ -0,0 +1,23 @@
+#pragma once
+
+#include <vector>
+
+#include <cucumber/message.hpp>
+
+namespace cucumber::messages {
+
+//
+// Represents the UndefinedParameterType message in Cucumber's message protocol
+// @see <a href=https://github.com/cucumber/messages>Github - Cucumber - Messages</a>
+//
+// Generated code
+
+struct undefined_parameter_type : cucumber::message
+{
+    std::string expression;
+    std::string name;
+
+    std::string to_string() const override;
+};
+
+}
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/attachment.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/attachment.cpp
new file mode 100644
index 00000000..ca746bcd
--- /dev/null
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/attachment.cpp
@@ -0,0 +1,27 @@
+#include <sstream>
+
+#include <cucumber/utils.hpp>
+#include <cucumber/messages/attachment.hpp>
+
+namespace cucumber::messages {
+
+std::string
+attachment::to_string() const
+{
+    std::ostringstream oss;
+
+    oss
+        << "body=" << body
+        << ", content_encoding=" << content_encoding
+        << ", file_name=" << file_name
+        << ", media_type=" << media_type
+        << ", source=" << source
+        << ", test_case_started_id=" << test_case_started_id
+        << ", test_step_id=" << test_step_id
+        << ", url=" << url
+        ;
+
+    return oss.str();
+}
+
+}
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/attachment_content_encoding.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/attachment_content_encoding.cpp
new file mode 100644
index 00000000..9a0e272c
--- /dev/null
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/attachment_content_encoding.cpp
@@ -0,0 +1,28 @@
+#include <unordered_map>
+
+#include <cucumber/messages/attachment_content_encoding.hpp>
+
+namespace cucumber::messages {
+
+std::string_view
+to_string(attachment_content_encoding v)
+{
+    using map_type = std::unordered_map<attachment_content_encoding, std::string_view>;
+
+    static const map_type m = {
+        { IDENTITY, "IDENTITY" },
+        { BASE64, "BASE64" }
+    };
+
+    return m.at(v);
+}
+
+std::ostream&
+operator<<(std::ostream& os, attachment_content_encoding v)
+{
+    os << to_string(v);
+
+    return os;
+}
+
+}
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/background.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/background.cpp
new file mode 100644
index 00000000..0bb90e65
--- /dev/null
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/background.cpp
@@ -0,0 +1,25 @@
+#include <sstream>
+
+#include <cucumber/utils.hpp>
+#include <cucumber/messages/background.hpp>
+
+namespace cucumber::messages {
+
+std::string
+background::to_string() const
+{
+    std::ostringstream oss;
+
+    oss
+        << "location=" << location
+        << ", keyword=" << keyword
+        << ", name=" << name
+        << ", description=" << description
+        << ", steps=" << steps
+        << ", id=" << id
+        ;
+
+    return oss.str();
+}
+
+}
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/ci.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/ci.cpp
new file mode 100644
index 00000000..5e1f2d89
--- /dev/null
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/ci.cpp
@@ -0,0 +1,23 @@
+#include <sstream>
+
+#include <cucumber/utils.hpp>
+#include <cucumber/messages/ci.hpp>
+
+namespace cucumber::messages {
+
+std::string
+ci::to_string() const
+{
+    std::ostringstream oss;
+
+    oss
+        << "name=" << name
+        << ", url=" << url
+        << ", build_number=" << build_number
+        << ", git=" << git
+        ;
+
+    return oss.str();
+}
+
+}
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/comment.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/comment.cpp
new file mode 100644
index 00000000..b4d6db2d
--- /dev/null
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/comment.cpp
@@ -0,0 +1,21 @@
+#include <sstream>
+
+#include <cucumber/utils.hpp>
+#include <cucumber/messages/comment.hpp>
+
+namespace cucumber::messages {
+
+std::string
+comment::to_string() const
+{
+    std::ostringstream oss;
+
+    oss
+        << "location=" << location
+        << ", text=" << text
+        ;
+
+    return oss.str();
+}
+
+}
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/data_table.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/data_table.cpp
new file mode 100644
index 00000000..5d8c947d
--- /dev/null
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/data_table.cpp
@@ -0,0 +1,21 @@
+#include <sstream>
+
+#include <cucumber/utils.hpp>
+#include <cucumber/messages/data_table.hpp>
+
+namespace cucumber::messages {
+
+std::string
+data_table::to_string() const
+{
+    std::ostringstream oss;
+
+    oss
+        << "location=" << location
+        << ", rows=" << rows
+        ;
+
+    return oss.str();
+}
+
+}
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/doc_string.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/doc_string.cpp
new file mode 100644
index 00000000..c60de5ec
--- /dev/null
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/doc_string.cpp
@@ -0,0 +1,23 @@
+#include <sstream>
+
+#include <cucumber/utils.hpp>
+#include <cucumber/messages/doc_string.hpp>
+
+namespace cucumber::messages {
+
+std::string
+doc_string::to_string() const
+{
+    std::ostringstream oss;
+
+    oss
+        << "location=" << location
+        << ", media_type=" << media_type
+        << ", content=" << content
+        << ", delimiter=" << delimiter
+        ;
+
+    return oss.str();
+}
+
+}
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/duration.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/duration.cpp
new file mode 100644
index 00000000..067a21e3
--- /dev/null
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/duration.cpp
@@ -0,0 +1,21 @@
+#include <sstream>
+
+#include <cucumber/utils.hpp>
+#include <cucumber/messages/duration.hpp>
+
+namespace cucumber::messages {
+
+std::string
+duration::to_string() const
+{
+    std::ostringstream oss;
+
+    oss
+        << "seconds=" << seconds
+        << ", nanos=" << nanos
+        ;
+
+    return oss.str();
+}
+
+}
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/envelope.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/envelope.cpp
new file mode 100644
index 00000000..9706f5a0
--- /dev/null
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/envelope.cpp
@@ -0,0 +1,36 @@
+#include <sstream>
+
+#include <cucumber/utils.hpp>
+#include <cucumber/messages/envelope.hpp>
+
+namespace cucumber::messages {
+
+std::string
+envelope::to_string() const
+{
+    std::ostringstream oss;
+
+    oss
+        << "attachment=" << attachment
+        << ", gherkin_document=" << gherkin_document
+        << ", hook=" << hook
+        << ", meta=" << meta
+        << ", parameter_type=" << parameter_type
+        << ", parse_error=" << parse_error
+        << ", pickle=" << pickle
+        << ", source=" << source
+        << ", step_definition=" << step_definition
+        << ", test_case=" << test_case
+        << ", test_case_finished=" << test_case_finished
+        << ", test_case_started=" << test_case_started
+        << ", test_run_finished=" << test_run_finished
+        << ", test_run_started=" << test_run_started
+        << ", test_step_finished=" << test_step_finished
+        << ", test_step_started=" << test_step_started
+        << ", undefined_parameter_type=" << undefined_parameter_type
+        ;
+
+    return oss.str();
+}
+
+}
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/examples.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/examples.cpp
new file mode 100644
index 00000000..5d3e39eb
--- /dev/null
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/examples.cpp
@@ -0,0 +1,27 @@
+#include <sstream>
+
+#include <cucumber/utils.hpp>
+#include <cucumber/messages/examples.hpp>
+
+namespace cucumber::messages {
+
+std::string
+examples::to_string() const
+{
+    std::ostringstream oss;
+
+    oss
+        << "location=" << location
+        << ", tags=" << tags
+        << ", keyword=" << keyword
+        << ", name=" << name
+        << ", description=" << description
+        << ", table_header=" << table_header
+        << ", table_body=" << table_body
+        << ", id=" << id
+        ;
+
+    return oss.str();
+}
+
+}
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/exception.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/exception.cpp
new file mode 100644
index 00000000..39342acf
--- /dev/null
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/exception.cpp
@@ -0,0 +1,21 @@
+#include <sstream>
+
+#include <cucumber/utils.hpp>
+#include <cucumber/messages/exception.hpp>
+
+namespace cucumber::messages {
+
+std::string
+exception::to_string() const
+{
+    std::ostringstream oss;
+
+    oss
+        << "type=" << type
+        << ", message=" << message
+        ;
+
+    return oss.str();
+}
+
+}
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/feature.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/feature.cpp
new file mode 100644
index 00000000..d01b402e
--- /dev/null
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/feature.cpp
@@ -0,0 +1,26 @@
+#include <sstream>
+
+#include <cucumber/utils.hpp>
+#include <cucumber/messages/feature.hpp>
+
+namespace cucumber::messages {
+
+std::string
+feature::to_string() const
+{
+    std::ostringstream oss;
+
+    oss
+        << "location=" << location
+        << ", tags=" << tags
+        << ", language=" << language
+        << ", keyword=" << keyword
+        << ", name=" << name
+        << ", description=" << description
+        << ", children=" << children
+        ;
+
+    return oss.str();
+}
+
+}
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/feature_child.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/feature_child.cpp
new file mode 100644
index 00000000..89b06794
--- /dev/null
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/feature_child.cpp
@@ -0,0 +1,22 @@
+#include <sstream>
+
+#include <cucumber/utils.hpp>
+#include <cucumber/messages/feature_child.hpp>
+
+namespace cucumber::messages {
+
+std::string
+feature_child::to_string() const
+{
+    std::ostringstream oss;
+
+    oss
+        << "rule=" << rule
+        << ", background=" << background
+        << ", scenario=" << scenario
+        ;
+
+    return oss.str();
+}
+
+}
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/gherkin_document.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/gherkin_document.cpp
new file mode 100644
index 00000000..989d604b
--- /dev/null
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/gherkin_document.cpp
@@ -0,0 +1,22 @@
+#include <sstream>
+
+#include <cucumber/utils.hpp>
+#include <cucumber/messages/gherkin_document.hpp>
+
+namespace cucumber::messages {
+
+std::string
+gherkin_document::to_string() const
+{
+    std::ostringstream oss;
+
+    oss
+        << "uri=" << uri
+        << ", feature=" << feature
+        << ", comments=" << comments
+        ;
+
+    return oss.str();
+}
+
+}
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/git.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/git.cpp
new file mode 100644
index 00000000..2ee1a0a6
--- /dev/null
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/git.cpp
@@ -0,0 +1,23 @@
+#include <sstream>
+
+#include <cucumber/utils.hpp>
+#include <cucumber/messages/git.hpp>
+
+namespace cucumber::messages {
+
+std::string
+git::to_string() const
+{
+    std::ostringstream oss;
+
+    oss
+        << "remote=" << remote
+        << ", revision=" << revision
+        << ", branch=" << branch
+        << ", tag=" << tag
+        ;
+
+    return oss.str();
+}
+
+}
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/group.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/group.cpp
new file mode 100644
index 00000000..526c259c
--- /dev/null
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/group.cpp
@@ -0,0 +1,22 @@
+#include <sstream>
+
+#include <cucumber/utils.hpp>
+#include <cucumber/messages/group.hpp>
+
+namespace cucumber::messages {
+
+std::string
+group::to_string() const
+{
+    std::ostringstream oss;
+
+    oss
+        << "children=" << children
+        << ", start=" << start
+        << ", value=" << value
+        ;
+
+    return oss.str();
+}
+
+}
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/hook.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/hook.cpp
new file mode 100644
index 00000000..45301cc6
--- /dev/null
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/hook.cpp
@@ -0,0 +1,23 @@
+#include <sstream>
+
+#include <cucumber/utils.hpp>
+#include <cucumber/messages/hook.hpp>
+
+namespace cucumber::messages {
+
+std::string
+hook::to_string() const
+{
+    std::ostringstream oss;
+
+    oss
+        << "id=" << id
+        << ", name=" << name
+        << ", source_reference=" << source_reference
+        << ", tag_expression=" << tag_expression
+        ;
+
+    return oss.str();
+}
+
+}
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/java_method.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/java_method.cpp
new file mode 100644
index 00000000..2747d576
--- /dev/null
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/java_method.cpp
@@ -0,0 +1,22 @@
+#include <sstream>
+
+#include <cucumber/utils.hpp>
+#include <cucumber/messages/java_method.hpp>
+
+namespace cucumber::messages {
+
+std::string
+java_method::to_string() const
+{
+    std::ostringstream oss;
+
+    oss
+        << "class_name=" << class_name
+        << ", method_name=" << method_name
+        << ", method_parameter_types=" << cucumber::to_string(method_parameter_types)
+        ;
+
+    return oss.str();
+}
+
+}
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/java_stack_trace_element.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/java_stack_trace_element.cpp
new file mode 100644
index 00000000..d0068de2
--- /dev/null
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/java_stack_trace_element.cpp
@@ -0,0 +1,22 @@
+#include <sstream>
+
+#include <cucumber/utils.hpp>
+#include <cucumber/messages/java_stack_trace_element.hpp>
+
+namespace cucumber::messages {
+
+std::string
+java_stack_trace_element::to_string() const
+{
+    std::ostringstream oss;
+
+    oss
+        << "class_name=" << class_name
+        << ", file_name=" << file_name
+        << ", method_name=" << method_name
+        ;
+
+    return oss.str();
+}
+
+}
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/location.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/location.cpp
new file mode 100644
index 00000000..d9c71b91
--- /dev/null
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/location.cpp
@@ -0,0 +1,21 @@
+#include <sstream>
+
+#include <cucumber/utils.hpp>
+#include <cucumber/messages/location.hpp>
+
+namespace cucumber::messages {
+
+std::string
+location::to_string() const
+{
+    std::ostringstream oss;
+
+    oss
+        << "line=" << line
+        << ", column=" << column
+        ;
+
+    return oss.str();
+}
+
+}
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/meta.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/meta.cpp
new file mode 100644
index 00000000..278a8080
--- /dev/null
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/meta.cpp
@@ -0,0 +1,25 @@
+#include <sstream>
+
+#include <cucumber/utils.hpp>
+#include <cucumber/messages/meta.hpp>
+
+namespace cucumber::messages {
+
+std::string
+meta::to_string() const
+{
+    std::ostringstream oss;
+
+    oss
+        << "protocol_version=" << protocol_version
+        << ", implementation=" << implementation
+        << ", runtime=" << runtime
+        << ", os=" << os
+        << ", cpu=" << cpu
+        << ", ci=" << ci
+        ;
+
+    return oss.str();
+}
+
+}
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/parameter_type.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/parameter_type.cpp
new file mode 100644
index 00000000..431f2198
--- /dev/null
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/parameter_type.cpp
@@ -0,0 +1,25 @@
+#include <sstream>
+
+#include <cucumber/utils.hpp>
+#include <cucumber/messages/parameter_type.hpp>
+
+namespace cucumber::messages {
+
+std::string
+parameter_type::to_string() const
+{
+    std::ostringstream oss;
+
+    oss
+        << "name=" << name
+        << ", regular_expressions=" << cucumber::to_string(regular_expressions)
+        << ", prefer_for_regular_expression_match=" << prefer_for_regular_expression_match
+        << ", use_for_snippets=" << use_for_snippets
+        << ", id=" << id
+        << ", source_reference=" << source_reference
+        ;
+
+    return oss.str();
+}
+
+}
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/parse_error.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/parse_error.cpp
new file mode 100644
index 00000000..dd64e842
--- /dev/null
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/parse_error.cpp
@@ -0,0 +1,21 @@
+#include <sstream>
+
+#include <cucumber/utils.hpp>
+#include <cucumber/messages/parse_error.hpp>
+
+namespace cucumber::messages {
+
+std::string
+parse_error::to_string() const
+{
+    std::ostringstream oss;
+
+    oss
+        << "source=" << source
+        << ", message=" << message
+        ;
+
+    return oss.str();
+}
+
+}
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/pickle.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/pickle.cpp
new file mode 100644
index 00000000..c3bc1f78
--- /dev/null
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/pickle.cpp
@@ -0,0 +1,26 @@
+#include <sstream>
+
+#include <cucumber/utils.hpp>
+#include <cucumber/messages/pickle.hpp>
+
+namespace cucumber::messages {
+
+std::string
+pickle::to_string() const
+{
+    std::ostringstream oss;
+
+    oss
+        << "id=" << id
+        << ", uri=" << uri
+        << ", name=" << name
+        << ", language=" << language
+        << ", steps=" << steps
+        << ", tags=" << tags
+        << ", ast_node_ids=" << cucumber::to_string(ast_node_ids)
+        ;
+
+    return oss.str();
+}
+
+}
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_doc_string.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_doc_string.cpp
new file mode 100644
index 00000000..7c3e2078
--- /dev/null
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_doc_string.cpp
@@ -0,0 +1,21 @@
+#include <sstream>
+
+#include <cucumber/utils.hpp>
+#include <cucumber/messages/pickle_doc_string.hpp>
+
+namespace cucumber::messages {
+
+std::string
+pickle_doc_string::to_string() const
+{
+    std::ostringstream oss;
+
+    oss
+        << "media_type=" << media_type
+        << ", content=" << content
+        ;
+
+    return oss.str();
+}
+
+}
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_step.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_step.cpp
new file mode 100644
index 00000000..8574a6dc
--- /dev/null
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_step.cpp
@@ -0,0 +1,24 @@
+#include <sstream>
+
+#include <cucumber/utils.hpp>
+#include <cucumber/messages/pickle_step.hpp>
+
+namespace cucumber::messages {
+
+std::string
+pickle_step::to_string() const
+{
+    std::ostringstream oss;
+
+    oss
+        << "argument=" << argument
+        << ", ast_node_ids=" << cucumber::to_string(ast_node_ids)
+        << ", id=" << id
+        << ", type=" << type
+        << ", text=" << text
+        ;
+
+    return oss.str();
+}
+
+}
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_step_argument.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_step_argument.cpp
new file mode 100644
index 00000000..a1424ca3
--- /dev/null
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_step_argument.cpp
@@ -0,0 +1,21 @@
+#include <sstream>
+
+#include <cucumber/utils.hpp>
+#include <cucumber/messages/pickle_step_argument.hpp>
+
+namespace cucumber::messages {
+
+std::string
+pickle_step_argument::to_string() const
+{
+    std::ostringstream oss;
+
+    oss
+        << "doc_string=" << doc_string
+        << ", data_table=" << data_table
+        ;
+
+    return oss.str();
+}
+
+}
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_step_type.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_step_type.cpp
new file mode 100644
index 00000000..9e8d1d7a
--- /dev/null
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_step_type.cpp
@@ -0,0 +1,30 @@
+#include <unordered_map>
+
+#include <cucumber/messages/pickle_step_type.hpp>
+
+namespace cucumber::messages {
+
+std::string_view
+to_string(pickle_step_type v)
+{
+    using map_type = std::unordered_map<pickle_step_type, std::string_view>;
+
+    static const map_type m = {
+        { UNKNOWN, "Unknown" },
+        { CONTEXT, "Context" },
+        { ACTION, "Action" },
+        { OUTCOME, "Outcome" }
+    };
+
+    return m.at(v);
+}
+
+std::ostream&
+operator<<(std::ostream& os, pickle_step_type v)
+{
+    os << to_string(v);
+
+    return os;
+}
+
+}
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_table.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_table.cpp
new file mode 100644
index 00000000..800d491a
--- /dev/null
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_table.cpp
@@ -0,0 +1,20 @@
+#include <sstream>
+
+#include <cucumber/utils.hpp>
+#include <cucumber/messages/pickle_table.hpp>
+
+namespace cucumber::messages {
+
+std::string
+pickle_table::to_string() const
+{
+    std::ostringstream oss;
+
+    oss
+        << "rows=" << rows
+        ;
+
+    return oss.str();
+}
+
+}
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_table_cell.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_table_cell.cpp
new file mode 100644
index 00000000..adbd5f62
--- /dev/null
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_table_cell.cpp
@@ -0,0 +1,20 @@
+#include <sstream>
+
+#include <cucumber/utils.hpp>
+#include <cucumber/messages/pickle_table_cell.hpp>
+
+namespace cucumber::messages {
+
+std::string
+pickle_table_cell::to_string() const
+{
+    std::ostringstream oss;
+
+    oss
+        << "value=" << value
+        ;
+
+    return oss.str();
+}
+
+}
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_table_row.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_table_row.cpp
new file mode 100644
index 00000000..b14fc5ef
--- /dev/null
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_table_row.cpp
@@ -0,0 +1,20 @@
+#include <sstream>
+
+#include <cucumber/utils.hpp>
+#include <cucumber/messages/pickle_table_row.hpp>
+
+namespace cucumber::messages {
+
+std::string
+pickle_table_row::to_string() const
+{
+    std::ostringstream oss;
+
+    oss
+        << "cells=" << cells
+        ;
+
+    return oss.str();
+}
+
+}
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_tag.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_tag.cpp
new file mode 100644
index 00000000..36ea011c
--- /dev/null
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_tag.cpp
@@ -0,0 +1,21 @@
+#include <sstream>
+
+#include <cucumber/utils.hpp>
+#include <cucumber/messages/pickle_tag.hpp>
+
+namespace cucumber::messages {
+
+std::string
+pickle_tag::to_string() const
+{
+    std::ostringstream oss;
+
+    oss
+        << "name=" << name
+        << ", ast_node_id=" << ast_node_id
+        ;
+
+    return oss.str();
+}
+
+}
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/product.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/product.cpp
new file mode 100644
index 00000000..22a72dbf
--- /dev/null
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/product.cpp
@@ -0,0 +1,21 @@
+#include <sstream>
+
+#include <cucumber/utils.hpp>
+#include <cucumber/messages/product.hpp>
+
+namespace cucumber::messages {
+
+std::string
+product::to_string() const
+{
+    std::ostringstream oss;
+
+    oss
+        << "name=" << name
+        << ", version=" << version
+        ;
+
+    return oss.str();
+}
+
+}
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/rule.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/rule.cpp
new file mode 100644
index 00000000..aa3a92af
--- /dev/null
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/rule.cpp
@@ -0,0 +1,26 @@
+#include <sstream>
+
+#include <cucumber/utils.hpp>
+#include <cucumber/messages/rule.hpp>
+
+namespace cucumber::messages {
+
+std::string
+rule::to_string() const
+{
+    std::ostringstream oss;
+
+    oss
+        << "location=" << location
+        << ", tags=" << tags
+        << ", keyword=" << keyword
+        << ", name=" << name
+        << ", description=" << description
+        << ", children=" << children
+        << ", id=" << id
+        ;
+
+    return oss.str();
+}
+
+}
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/rule_child.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/rule_child.cpp
new file mode 100644
index 00000000..3cc22a7d
--- /dev/null
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/rule_child.cpp
@@ -0,0 +1,21 @@
+#include <sstream>
+
+#include <cucumber/utils.hpp>
+#include <cucumber/messages/rule_child.hpp>
+
+namespace cucumber::messages {
+
+std::string
+rule_child::to_string() const
+{
+    std::ostringstream oss;
+
+    oss
+        << "background=" << background
+        << ", scenario=" << scenario
+        ;
+
+    return oss.str();
+}
+
+}
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/scenario.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/scenario.cpp
new file mode 100644
index 00000000..136bb400
--- /dev/null
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/scenario.cpp
@@ -0,0 +1,27 @@
+#include <sstream>
+
+#include <cucumber/utils.hpp>
+#include <cucumber/messages/scenario.hpp>
+
+namespace cucumber::messages {
+
+std::string
+scenario::to_string() const
+{
+    std::ostringstream oss;
+
+    oss
+        << "location=" << location
+        << ", tags=" << tags
+        << ", keyword=" << keyword
+        << ", name=" << name
+        << ", description=" << description
+        << ", steps=" << steps
+        << ", examples=" << examples
+        << ", id=" << id
+        ;
+
+    return oss.str();
+}
+
+}
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/source.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/source.cpp
new file mode 100644
index 00000000..8e70138f
--- /dev/null
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/source.cpp
@@ -0,0 +1,22 @@
+#include <sstream>
+
+#include <cucumber/utils.hpp>
+#include <cucumber/messages/source.hpp>
+
+namespace cucumber::messages {
+
+std::string
+source::to_string() const
+{
+    std::ostringstream oss;
+
+    oss
+        << "uri=" << uri
+        << ", data=" << data
+        << ", media_type=" << media_type
+        ;
+
+    return oss.str();
+}
+
+}
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/source_media_type.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/source_media_type.cpp
new file mode 100644
index 00000000..35439aa4
--- /dev/null
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/source_media_type.cpp
@@ -0,0 +1,28 @@
+#include <unordered_map>
+
+#include <cucumber/messages/source_media_type.hpp>
+
+namespace cucumber::messages {
+
+std::string_view
+to_string(source_media_type v)
+{
+    using map_type = std::unordered_map<source_media_type, std::string_view>;
+
+    static const map_type m = {
+        { TEXT_X_CUCUMBER_GHERKIN_PLAIN, "text/x.cucumber.gherkin+plain" },
+        { TEXT_X_CUCUMBER_GHERKIN_MARKDOWN, "text/x.cucumber.gherkin+markdown" }
+    };
+
+    return m.at(v);
+}
+
+std::ostream&
+operator<<(std::ostream& os, source_media_type v)
+{
+    os << to_string(v);
+
+    return os;
+}
+
+}
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/source_reference.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/source_reference.cpp
new file mode 100644
index 00000000..0ac31ffe
--- /dev/null
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/source_reference.cpp
@@ -0,0 +1,23 @@
+#include <sstream>
+
+#include <cucumber/utils.hpp>
+#include <cucumber/messages/source_reference.hpp>
+
+namespace cucumber::messages {
+
+std::string
+source_reference::to_string() const
+{
+    std::ostringstream oss;
+
+    oss
+        << "uri=" << uri
+        << ", java_method=" << java_method
+        << ", java_stack_trace_element=" << java_stack_trace_element
+        << ", location=" << location
+        ;
+
+    return oss.str();
+}
+
+}
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/step.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/step.cpp
new file mode 100644
index 00000000..50775f3c
--- /dev/null
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/step.cpp
@@ -0,0 +1,26 @@
+#include <sstream>
+
+#include <cucumber/utils.hpp>
+#include <cucumber/messages/step.hpp>
+
+namespace cucumber::messages {
+
+std::string
+step::to_string() const
+{
+    std::ostringstream oss;
+
+    oss
+        << "location=" << location
+        << ", keyword=" << keyword
+        << ", keyword_type=" << keyword_type
+        << ", text=" << text
+        << ", doc_string=" << doc_string
+        << ", data_table=" << data_table
+        << ", id=" << id
+        ;
+
+    return oss.str();
+}
+
+}
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/step_definition.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/step_definition.cpp
new file mode 100644
index 00000000..2808a70f
--- /dev/null
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/step_definition.cpp
@@ -0,0 +1,22 @@
+#include <sstream>
+
+#include <cucumber/utils.hpp>
+#include <cucumber/messages/step_definition.hpp>
+
+namespace cucumber::messages {
+
+std::string
+step_definition::to_string() const
+{
+    std::ostringstream oss;
+
+    oss
+        << "id=" << id
+        << ", pattern=" << pattern
+        << ", source_reference=" << source_reference
+        ;
+
+    return oss.str();
+}
+
+}
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/step_definition_pattern.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/step_definition_pattern.cpp
new file mode 100644
index 00000000..7d2572ff
--- /dev/null
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/step_definition_pattern.cpp
@@ -0,0 +1,21 @@
+#include <sstream>
+
+#include <cucumber/utils.hpp>
+#include <cucumber/messages/step_definition_pattern.hpp>
+
+namespace cucumber::messages {
+
+std::string
+step_definition_pattern::to_string() const
+{
+    std::ostringstream oss;
+
+    oss
+        << "source=" << source
+        << ", type=" << type
+        ;
+
+    return oss.str();
+}
+
+}
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/step_definition_pattern_type.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/step_definition_pattern_type.cpp
new file mode 100644
index 00000000..c67ddf35
--- /dev/null
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/step_definition_pattern_type.cpp
@@ -0,0 +1,28 @@
+#include <unordered_map>
+
+#include <cucumber/messages/step_definition_pattern_type.hpp>
+
+namespace cucumber::messages {
+
+std::string_view
+to_string(step_definition_pattern_type v)
+{
+    using map_type = std::unordered_map<step_definition_pattern_type, std::string_view>;
+
+    static const map_type m = {
+        { CUCUMBER_EXPRESSION, "CUCUMBER_EXPRESSION" },
+        { REGULAR_EXPRESSION, "REGULAR_EXPRESSION" }
+    };
+
+    return m.at(v);
+}
+
+std::ostream&
+operator<<(std::ostream& os, step_definition_pattern_type v)
+{
+    os << to_string(v);
+
+    return os;
+}
+
+}
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/step_keyword_type.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/step_keyword_type.cpp
new file mode 100644
index 00000000..6d82d017
--- /dev/null
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/step_keyword_type.cpp
@@ -0,0 +1,31 @@
+#include <unordered_map>
+
+#include <cucumber/messages/step_keyword_type.hpp>
+
+namespace cucumber::messages {
+
+std::string_view
+to_string(step_keyword_type v)
+{
+    using map_type = std::unordered_map<step_keyword_type, std::string_view>;
+
+    static const map_type m = {
+        { UNKNOWN, "Unknown" },
+        { CONTEXT, "Context" },
+        { ACTION, "Action" },
+        { OUTCOME, "Outcome" },
+        { CONJUNCTION, "Conjunction" }
+    };
+
+    return m.at(v);
+}
+
+std::ostream&
+operator<<(std::ostream& os, step_keyword_type v)
+{
+    os << to_string(v);
+
+    return os;
+}
+
+}
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/step_match_argument.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/step_match_argument.cpp
new file mode 100644
index 00000000..3909c47f
--- /dev/null
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/step_match_argument.cpp
@@ -0,0 +1,21 @@
+#include <sstream>
+
+#include <cucumber/utils.hpp>
+#include <cucumber/messages/step_match_argument.hpp>
+
+namespace cucumber::messages {
+
+std::string
+step_match_argument::to_string() const
+{
+    std::ostringstream oss;
+
+    oss
+        << "group=" << group
+        << ", parameter_type_name=" << parameter_type_name
+        ;
+
+    return oss.str();
+}
+
+}
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/step_match_arguments_list.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/step_match_arguments_list.cpp
new file mode 100644
index 00000000..0d35a6e5
--- /dev/null
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/step_match_arguments_list.cpp
@@ -0,0 +1,20 @@
+#include <sstream>
+
+#include <cucumber/utils.hpp>
+#include <cucumber/messages/step_match_arguments_list.hpp>
+
+namespace cucumber::messages {
+
+std::string
+step_match_arguments_list::to_string() const
+{
+    std::ostringstream oss;
+
+    oss
+        << "step_match_arguments=" << step_match_arguments
+        ;
+
+    return oss.str();
+}
+
+}
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/table_cell.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/table_cell.cpp
new file mode 100644
index 00000000..c2024bf5
--- /dev/null
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/table_cell.cpp
@@ -0,0 +1,21 @@
+#include <sstream>
+
+#include <cucumber/utils.hpp>
+#include <cucumber/messages/table_cell.hpp>
+
+namespace cucumber::messages {
+
+std::string
+table_cell::to_string() const
+{
+    std::ostringstream oss;
+
+    oss
+        << "location=" << location
+        << ", value=" << value
+        ;
+
+    return oss.str();
+}
+
+}
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/table_row.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/table_row.cpp
new file mode 100644
index 00000000..8b94c892
--- /dev/null
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/table_row.cpp
@@ -0,0 +1,22 @@
+#include <sstream>
+
+#include <cucumber/utils.hpp>
+#include <cucumber/messages/table_row.hpp>
+
+namespace cucumber::messages {
+
+std::string
+table_row::to_string() const
+{
+    std::ostringstream oss;
+
+    oss
+        << "location=" << location
+        << ", cells=" << cells
+        << ", id=" << id
+        ;
+
+    return oss.str();
+}
+
+}
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/tag.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/tag.cpp
new file mode 100644
index 00000000..b6e01815
--- /dev/null
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/tag.cpp
@@ -0,0 +1,22 @@
+#include <sstream>
+
+#include <cucumber/utils.hpp>
+#include <cucumber/messages/tag.hpp>
+
+namespace cucumber::messages {
+
+std::string
+tag::to_string() const
+{
+    std::ostringstream oss;
+
+    oss
+        << "location=" << location
+        << ", name=" << name
+        << ", id=" << id
+        ;
+
+    return oss.str();
+}
+
+}
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/test_case.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/test_case.cpp
new file mode 100644
index 00000000..a428c35f
--- /dev/null
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/test_case.cpp
@@ -0,0 +1,22 @@
+#include <sstream>
+
+#include <cucumber/utils.hpp>
+#include <cucumber/messages/test_case.hpp>
+
+namespace cucumber::messages {
+
+std::string
+test_case::to_string() const
+{
+    std::ostringstream oss;
+
+    oss
+        << "id=" << id
+        << ", pickle_id=" << pickle_id
+        << ", test_steps=" << test_steps
+        ;
+
+    return oss.str();
+}
+
+}
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/test_case_finished.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/test_case_finished.cpp
new file mode 100644
index 00000000..5ee68d28
--- /dev/null
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/test_case_finished.cpp
@@ -0,0 +1,22 @@
+#include <sstream>
+
+#include <cucumber/utils.hpp>
+#include <cucumber/messages/test_case_finished.hpp>
+
+namespace cucumber::messages {
+
+std::string
+test_case_finished::to_string() const
+{
+    std::ostringstream oss;
+
+    oss
+        << "test_case_started_id=" << test_case_started_id
+        << ", timestamp=" << timestamp
+        << ", will_be_retried=" << will_be_retried
+        ;
+
+    return oss.str();
+}
+
+}
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/test_case_started.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/test_case_started.cpp
new file mode 100644
index 00000000..d13bce77
--- /dev/null
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/test_case_started.cpp
@@ -0,0 +1,24 @@
+#include <sstream>
+
+#include <cucumber/utils.hpp>
+#include <cucumber/messages/test_case_started.hpp>
+
+namespace cucumber::messages {
+
+std::string
+test_case_started::to_string() const
+{
+    std::ostringstream oss;
+
+    oss
+        << "attempt=" << attempt
+        << ", id=" << id
+        << ", test_case_id=" << test_case_id
+        << ", worker_id=" << worker_id
+        << ", timestamp=" << timestamp
+        ;
+
+    return oss.str();
+}
+
+}
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/test_run_finished.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/test_run_finished.cpp
new file mode 100644
index 00000000..186e8b69
--- /dev/null
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/test_run_finished.cpp
@@ -0,0 +1,23 @@
+#include <sstream>
+
+#include <cucumber/utils.hpp>
+#include <cucumber/messages/test_run_finished.hpp>
+
+namespace cucumber::messages {
+
+std::string
+test_run_finished::to_string() const
+{
+    std::ostringstream oss;
+
+    oss
+        << "message=" << message
+        << ", success=" << success
+        << ", timestamp=" << timestamp
+        << ", exception=" << exception
+        ;
+
+    return oss.str();
+}
+
+}
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/test_run_started.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/test_run_started.cpp
new file mode 100644
index 00000000..e0f81b1b
--- /dev/null
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/test_run_started.cpp
@@ -0,0 +1,20 @@
+#include <sstream>
+
+#include <cucumber/utils.hpp>
+#include <cucumber/messages/test_run_started.hpp>
+
+namespace cucumber::messages {
+
+std::string
+test_run_started::to_string() const
+{
+    std::ostringstream oss;
+
+    oss
+        << "timestamp=" << timestamp
+        ;
+
+    return oss.str();
+}
+
+}
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/test_step.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/test_step.cpp
new file mode 100644
index 00000000..44bb9be0
--- /dev/null
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/test_step.cpp
@@ -0,0 +1,24 @@
+#include <sstream>
+
+#include <cucumber/utils.hpp>
+#include <cucumber/messages/test_step.hpp>
+
+namespace cucumber::messages {
+
+std::string
+test_step::to_string() const
+{
+    std::ostringstream oss;
+
+    oss
+        << "hook_id=" << hook_id
+        << ", id=" << id
+        << ", pickle_step_id=" << pickle_step_id
+        << ", step_definition_ids=" << cucumber::to_string(step_definition_ids)
+        << ", step_match_arguments_lists=" << step_match_arguments_lists
+        ;
+
+    return oss.str();
+}
+
+}
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/test_step_finished.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/test_step_finished.cpp
new file mode 100644
index 00000000..df391d1d
--- /dev/null
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/test_step_finished.cpp
@@ -0,0 +1,23 @@
+#include <sstream>
+
+#include <cucumber/utils.hpp>
+#include <cucumber/messages/test_step_finished.hpp>
+
+namespace cucumber::messages {
+
+std::string
+test_step_finished::to_string() const
+{
+    std::ostringstream oss;
+
+    oss
+        << "test_case_started_id=" << test_case_started_id
+        << ", test_step_id=" << test_step_id
+        << ", test_step_result=" << test_step_result
+        << ", timestamp=" << timestamp
+        ;
+
+    return oss.str();
+}
+
+}
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/test_step_result.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/test_step_result.cpp
new file mode 100644
index 00000000..5a0b8240
--- /dev/null
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/test_step_result.cpp
@@ -0,0 +1,23 @@
+#include <sstream>
+
+#include <cucumber/utils.hpp>
+#include <cucumber/messages/test_step_result.hpp>
+
+namespace cucumber::messages {
+
+std::string
+test_step_result::to_string() const
+{
+    std::ostringstream oss;
+
+    oss
+        << "duration=" << duration
+        << ", message=" << message
+        << ", status=" << status
+        << ", exception=" << exception
+        ;
+
+    return oss.str();
+}
+
+}
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/test_step_result_status.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/test_step_result_status.cpp
new file mode 100644
index 00000000..620abbbf
--- /dev/null
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/test_step_result_status.cpp
@@ -0,0 +1,33 @@
+#include <unordered_map>
+
+#include <cucumber/messages/test_step_result_status.hpp>
+
+namespace cucumber::messages {
+
+std::string_view
+to_string(test_step_result_status v)
+{
+    using map_type = std::unordered_map<test_step_result_status, std::string_view>;
+
+    static const map_type m = {
+        { UNKNOWN, "UNKNOWN" },
+        { PASSED, "PASSED" },
+        { SKIPPED, "SKIPPED" },
+        { PENDING, "PENDING" },
+        { UNDEFINED, "UNDEFINED" },
+        { AMBIGUOUS, "AMBIGUOUS" },
+        { FAILED, "FAILED" }
+    };
+
+    return m.at(v);
+}
+
+std::ostream&
+operator<<(std::ostream& os, test_step_result_status v)
+{
+    os << to_string(v);
+
+    return os;
+}
+
+}
\ No newline at end of file
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/test_step_started.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/test_step_started.cpp
new file mode 100644
index 00000000..ffb6dba2
--- /dev/null
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/test_step_started.cpp
@@ -0,0 +1,22 @@
+#include <sstream>
+
+#include <cucumber/utils.hpp>
+#include <cucumber/messages/test_step_started.hpp>
+
+namespace cucumber::messages {
+
+std::string
+test_step_started::to_string() const
+{
+    std::ostringstream oss;
+
+    oss
+        << "test_case_started_id=" << test_case_started_id
+        << ", test_step_id=" << test_step_id
+        << ", timestamp=" << timestamp
+        ;
+
+    return oss.str();
+}
+
+}
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/timestamp.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/timestamp.cpp
new file mode 100644
index 00000000..bb34cf87
--- /dev/null
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/timestamp.cpp
@@ -0,0 +1,21 @@
+#include <sstream>
+
+#include <cucumber/utils.hpp>
+#include <cucumber/messages/timestamp.hpp>
+
+namespace cucumber::messages {
+
+std::string
+timestamp::to_string() const
+{
+    std::ostringstream oss;
+
+    oss
+        << "seconds=" << seconds
+        << ", nanos=" << nanos
+        ;
+
+    return oss.str();
+}
+
+}
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/undefined_parameter_type.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/undefined_parameter_type.cpp
new file mode 100644
index 00000000..d88f1a62
--- /dev/null
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/undefined_parameter_type.cpp
@@ -0,0 +1,21 @@
+#include <sstream>
+
+#include <cucumber/utils.hpp>
+#include <cucumber/messages/undefined_parameter_type.hpp>
+
+namespace cucumber::messages {
+
+std::string
+undefined_parameter_type::to_string() const
+{
+    std::ostringstream oss;
+
+    oss
+        << "expression=" << expression
+        << ", name=" << name
+        ;
+
+    return oss.str();
+}
+
+}

From dec222d0f805166921a810e8717ae2a4c8dfa60d Mon Sep 17 00:00:00 2001
From: Remy Chibois <remy@chybz.net>
Date: Fri, 5 May 2023 17:19:24 +0200
Subject: [PATCH 05/26] chore: missing include

---
 cpp/include/cucumber/message.hpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/cpp/include/cucumber/message.hpp b/cpp/include/cucumber/message.hpp
index a415a4e0..006b147f 100644
--- a/cpp/include/cucumber/message.hpp
+++ b/cpp/include/cucumber/message.hpp
@@ -2,6 +2,7 @@
 
 #include <type_traits>
 #include <vector>
+#include <string>
 
 namespace cucumber {
 

From 8c5f789afa94b38fcd7357a66e313624362cac5f Mon Sep 17 00:00:00 2001
From: Remy Chibois <remy@chybz.net>
Date: Fri, 5 May 2023 17:23:15 +0200
Subject: [PATCH 06/26] chore: missing include

---
 cpp/include/cucumber/message.hpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/cpp/include/cucumber/message.hpp b/cpp/include/cucumber/message.hpp
index 006b147f..c775e578 100644
--- a/cpp/include/cucumber/message.hpp
+++ b/cpp/include/cucumber/message.hpp
@@ -3,6 +3,7 @@
 #include <type_traits>
 #include <vector>
 #include <string>
+#include <ostream>
 
 namespace cucumber {
 

From 6a204969c71b23ac119abdf9a16ec079c1f9324b Mon Sep 17 00:00:00 2001
From: Remy Chibois <remy@chybz.net>
Date: Fri, 5 May 2023 18:25:16 +0200
Subject: [PATCH 07/26] chore: de-virtualized messages, cleaned CMakeLists

---
 cpp/include/cucumber/message.hpp              |   2 +-
 cpp/include/cucumber/messages/attachment.hpp  |   2 +-
 cpp/include/cucumber/messages/background.hpp  |   2 +-
 cpp/include/cucumber/messages/ci.hpp          |   2 +-
 cpp/include/cucumber/messages/comment.hpp     |   2 +-
 cpp/include/cucumber/messages/data_table.hpp  |   2 +-
 cpp/include/cucumber/messages/doc_string.hpp  |   2 +-
 cpp/include/cucumber/messages/duration.hpp    |   2 +-
 cpp/include/cucumber/messages/envelope.hpp    |   2 +-
 cpp/include/cucumber/messages/examples.hpp    |   2 +-
 cpp/include/cucumber/messages/exception.hpp   |   2 +-
 cpp/include/cucumber/messages/feature.hpp     |   2 +-
 .../cucumber/messages/feature_child.hpp       |   2 +-
 .../cucumber/messages/gherkin_document.hpp    |   2 +-
 cpp/include/cucumber/messages/git.hpp         |   2 +-
 cpp/include/cucumber/messages/group.hpp       |   2 +-
 cpp/include/cucumber/messages/hook.hpp        |   2 +-
 cpp/include/cucumber/messages/java_method.hpp |   2 +-
 .../messages/java_stack_trace_element.hpp     |   2 +-
 cpp/include/cucumber/messages/location.hpp    |   2 +-
 cpp/include/cucumber/messages/meta.hpp        |   2 +-
 .../cucumber/messages/parameter_type.hpp      |   2 +-
 cpp/include/cucumber/messages/parse_error.hpp |   2 +-
 cpp/include/cucumber/messages/pickle.hpp      |   2 +-
 .../cucumber/messages/pickle_doc_string.hpp   |   2 +-
 cpp/include/cucumber/messages/pickle_step.hpp |   2 +-
 .../messages/pickle_step_argument.hpp         |   2 +-
 .../cucumber/messages/pickle_table.hpp        |   2 +-
 .../cucumber/messages/pickle_table_cell.hpp   |   2 +-
 .../cucumber/messages/pickle_table_row.hpp    |   2 +-
 cpp/include/cucumber/messages/pickle_tag.hpp  |   2 +-
 cpp/include/cucumber/messages/product.hpp     |   2 +-
 cpp/include/cucumber/messages/rule.hpp        |   2 +-
 cpp/include/cucumber/messages/rule_child.hpp  |   2 +-
 cpp/include/cucumber/messages/scenario.hpp    |   2 +-
 cpp/include/cucumber/messages/source.hpp      |   2 +-
 .../cucumber/messages/source_reference.hpp    |   2 +-
 cpp/include/cucumber/messages/step.hpp        |   2 +-
 .../cucumber/messages/step_definition.hpp     |   2 +-
 .../messages/step_definition_pattern.hpp      |   2 +-
 .../cucumber/messages/step_match_argument.hpp |   2 +-
 .../messages/step_match_arguments_list.hpp    |   2 +-
 cpp/include/cucumber/messages/table_cell.hpp  |   2 +-
 cpp/include/cucumber/messages/table_row.hpp   |   2 +-
 cpp/include/cucumber/messages/tag.hpp         |   2 +-
 cpp/include/cucumber/messages/test_case.hpp   |   2 +-
 .../cucumber/messages/test_case_finished.hpp  |   2 +-
 .../cucumber/messages/test_case_started.hpp   |   2 +-
 .../cucumber/messages/test_run_finished.hpp   |   2 +-
 .../cucumber/messages/test_run_started.hpp    |   2 +-
 cpp/include/cucumber/messages/test_step.hpp   |   2 +-
 .../cucumber/messages/test_step_finished.hpp  |   2 +-
 .../cucumber/messages/test_step_result.hpp    |   2 +-
 .../cucumber/messages/test_step_started.hpp   |   2 +-
 cpp/include/cucumber/messages/timestamp.hpp   |   2 +-
 .../messages/undefined_parameter_type.hpp     |   2 +-
 cpp/src/lib/cucumber-messages/CMakeLists.txt  | 124 +-----------------
 .../cucumber-messages/cucumber/message.cpp    |   9 ++
 jsonschema/scripts/templates/cpp.hpp.erb      |   2 +-
 59 files changed, 72 insertions(+), 175 deletions(-)
 create mode 100644 cpp/src/lib/cucumber-messages/cucumber/message.cpp

diff --git a/cpp/include/cucumber/message.hpp b/cpp/include/cucumber/message.hpp
index c775e578..73fc1cb8 100644
--- a/cpp/include/cucumber/message.hpp
+++ b/cpp/include/cucumber/message.hpp
@@ -9,7 +9,7 @@ namespace cucumber {
 
 struct message
 {
-    virtual std::string to_string() const = 0;
+    std::string to_string() const;
 };
 
 template <
diff --git a/cpp/include/cucumber/messages/attachment.hpp b/cpp/include/cucumber/messages/attachment.hpp
index a587d37e..9e0885c2 100644
--- a/cpp/include/cucumber/messages/attachment.hpp
+++ b/cpp/include/cucumber/messages/attachment.hpp
@@ -38,7 +38,7 @@ struct attachment : cucumber::message
     std::string test_step_id;
     std::string url;
 
-    std::string to_string() const override;
+    std::string to_string() const;
 };
 
 }
diff --git a/cpp/include/cucumber/messages/background.hpp b/cpp/include/cucumber/messages/background.hpp
index 0b284beb..fd6c55ca 100644
--- a/cpp/include/cucumber/messages/background.hpp
+++ b/cpp/include/cucumber/messages/background.hpp
@@ -24,7 +24,7 @@ struct background : cucumber::message
     std::vector<cucumber::messages::step> steps;
     std::string id;
 
-    std::string to_string() const override;
+    std::string to_string() const;
 };
 
 }
diff --git a/cpp/include/cucumber/messages/ci.hpp b/cpp/include/cucumber/messages/ci.hpp
index b766b1cd..8b6c3b1d 100644
--- a/cpp/include/cucumber/messages/ci.hpp
+++ b/cpp/include/cucumber/messages/ci.hpp
@@ -23,7 +23,7 @@ struct ci : cucumber::message
     std::string build_number;
     cucumber::messages::git git;
 
-    std::string to_string() const override;
+    std::string to_string() const;
 };
 
 }
diff --git a/cpp/include/cucumber/messages/comment.hpp b/cpp/include/cucumber/messages/comment.hpp
index 097b5b16..10ba50fd 100644
--- a/cpp/include/cucumber/messages/comment.hpp
+++ b/cpp/include/cucumber/messages/comment.hpp
@@ -21,7 +21,7 @@ struct comment : cucumber::message
     cucumber::messages::location location;
     std::string text;
 
-    std::string to_string() const override;
+    std::string to_string() const;
 };
 
 }
diff --git a/cpp/include/cucumber/messages/data_table.hpp b/cpp/include/cucumber/messages/data_table.hpp
index 1f4da9e8..8534c1b8 100644
--- a/cpp/include/cucumber/messages/data_table.hpp
+++ b/cpp/include/cucumber/messages/data_table.hpp
@@ -20,7 +20,7 @@ struct data_table : cucumber::message
     cucumber::messages::location location;
     std::vector<cucumber::messages::table_row> rows;
 
-    std::string to_string() const override;
+    std::string to_string() const;
 };
 
 }
diff --git a/cpp/include/cucumber/messages/doc_string.hpp b/cpp/include/cucumber/messages/doc_string.hpp
index 790f8bfe..ee6c3347 100644
--- a/cpp/include/cucumber/messages/doc_string.hpp
+++ b/cpp/include/cucumber/messages/doc_string.hpp
@@ -21,7 +21,7 @@ struct doc_string : cucumber::message
     std::string content;
     std::string delimiter;
 
-    std::string to_string() const override;
+    std::string to_string() const;
 };
 
 }
diff --git a/cpp/include/cucumber/messages/duration.hpp b/cpp/include/cucumber/messages/duration.hpp
index 27169150..a7c007d5 100644
--- a/cpp/include/cucumber/messages/duration.hpp
+++ b/cpp/include/cucumber/messages/duration.hpp
@@ -20,7 +20,7 @@ struct duration : cucumber::message
     std::size_t seconds;
     std::size_t nanos;
 
-    std::string to_string() const override;
+    std::string to_string() const;
 };
 
 }
diff --git a/cpp/include/cucumber/messages/envelope.hpp b/cpp/include/cucumber/messages/envelope.hpp
index d4ea6d31..15b95bd4 100644
--- a/cpp/include/cucumber/messages/envelope.hpp
+++ b/cpp/include/cucumber/messages/envelope.hpp
@@ -57,7 +57,7 @@ struct envelope : cucumber::message
     cucumber::messages::test_step_started test_step_started;
     cucumber::messages::undefined_parameter_type undefined_parameter_type;
 
-    std::string to_string() const override;
+    std::string to_string() const;
 };
 
 }
diff --git a/cpp/include/cucumber/messages/examples.hpp b/cpp/include/cucumber/messages/examples.hpp
index e256f453..76830096 100644
--- a/cpp/include/cucumber/messages/examples.hpp
+++ b/cpp/include/cucumber/messages/examples.hpp
@@ -28,7 +28,7 @@ struct examples : cucumber::message
     std::vector<cucumber::messages::table_row> table_body;
     std::string id;
 
-    std::string to_string() const override;
+    std::string to_string() const;
 };
 
 }
diff --git a/cpp/include/cucumber/messages/exception.hpp b/cpp/include/cucumber/messages/exception.hpp
index fc4e4a82..66a92b56 100644
--- a/cpp/include/cucumber/messages/exception.hpp
+++ b/cpp/include/cucumber/messages/exception.hpp
@@ -19,7 +19,7 @@ struct exception : cucumber::message
     std::string type;
     std::string message;
 
-    std::string to_string() const override;
+    std::string to_string() const;
 };
 
 }
diff --git a/cpp/include/cucumber/messages/feature.hpp b/cpp/include/cucumber/messages/feature.hpp
index d73675c4..6e4400a5 100644
--- a/cpp/include/cucumber/messages/feature.hpp
+++ b/cpp/include/cucumber/messages/feature.hpp
@@ -26,7 +26,7 @@ struct feature : cucumber::message
     std::string description;
     std::vector<cucumber::messages::feature_child> children;
 
-    std::string to_string() const override;
+    std::string to_string() const;
 };
 
 }
diff --git a/cpp/include/cucumber/messages/feature_child.hpp b/cpp/include/cucumber/messages/feature_child.hpp
index 009970a6..be45a77a 100644
--- a/cpp/include/cucumber/messages/feature_child.hpp
+++ b/cpp/include/cucumber/messages/feature_child.hpp
@@ -24,7 +24,7 @@ struct feature_child : cucumber::message
     cucumber::messages::background background;
     cucumber::messages::scenario scenario;
 
-    std::string to_string() const override;
+    std::string to_string() const;
 };
 
 }
diff --git a/cpp/include/cucumber/messages/gherkin_document.hpp b/cpp/include/cucumber/messages/gherkin_document.hpp
index a832a469..9a4b1638 100644
--- a/cpp/include/cucumber/messages/gherkin_document.hpp
+++ b/cpp/include/cucumber/messages/gherkin_document.hpp
@@ -28,7 +28,7 @@ struct gherkin_document : cucumber::message
     cucumber::messages::feature feature;
     std::vector<cucumber::messages::comment> comments;
 
-    std::string to_string() const override;
+    std::string to_string() const;
 };
 
 }
diff --git a/cpp/include/cucumber/messages/git.hpp b/cpp/include/cucumber/messages/git.hpp
index c184048b..0f589277 100644
--- a/cpp/include/cucumber/messages/git.hpp
+++ b/cpp/include/cucumber/messages/git.hpp
@@ -22,7 +22,7 @@ struct git : cucumber::message
     std::string branch;
     std::string tag;
 
-    std::string to_string() const override;
+    std::string to_string() const;
 };
 
 }
diff --git a/cpp/include/cucumber/messages/group.hpp b/cpp/include/cucumber/messages/group.hpp
index 1b1d4e33..a3a8efd5 100644
--- a/cpp/include/cucumber/messages/group.hpp
+++ b/cpp/include/cucumber/messages/group.hpp
@@ -20,7 +20,7 @@ struct group : cucumber::message
     std::size_t start;
     std::string value;
 
-    std::string to_string() const override;
+    std::string to_string() const;
 };
 
 }
diff --git a/cpp/include/cucumber/messages/hook.hpp b/cpp/include/cucumber/messages/hook.hpp
index 319c9bd5..18189272 100644
--- a/cpp/include/cucumber/messages/hook.hpp
+++ b/cpp/include/cucumber/messages/hook.hpp
@@ -21,7 +21,7 @@ struct hook : cucumber::message
     cucumber::messages::source_reference source_reference;
     std::string tag_expression;
 
-    std::string to_string() const override;
+    std::string to_string() const;
 };
 
 }
diff --git a/cpp/include/cucumber/messages/java_method.hpp b/cpp/include/cucumber/messages/java_method.hpp
index 8ebcf0b1..4d5316ba 100644
--- a/cpp/include/cucumber/messages/java_method.hpp
+++ b/cpp/include/cucumber/messages/java_method.hpp
@@ -18,7 +18,7 @@ struct java_method : cucumber::message
     std::string method_name;
     std::vector<std::string> method_parameter_types;
 
-    std::string to_string() const override;
+    std::string to_string() const;
 };
 
 }
diff --git a/cpp/include/cucumber/messages/java_stack_trace_element.hpp b/cpp/include/cucumber/messages/java_stack_trace_element.hpp
index f782df84..6ae53794 100644
--- a/cpp/include/cucumber/messages/java_stack_trace_element.hpp
+++ b/cpp/include/cucumber/messages/java_stack_trace_element.hpp
@@ -18,7 +18,7 @@ struct java_stack_trace_element : cucumber::message
     std::string file_name;
     std::string method_name;
 
-    std::string to_string() const override;
+    std::string to_string() const;
 };
 
 }
diff --git a/cpp/include/cucumber/messages/location.hpp b/cpp/include/cucumber/messages/location.hpp
index 5348eb7f..54f4835e 100644
--- a/cpp/include/cucumber/messages/location.hpp
+++ b/cpp/include/cucumber/messages/location.hpp
@@ -19,7 +19,7 @@ struct location : cucumber::message
     std::size_t line;
     std::size_t column;
 
-    std::string to_string() const override;
+    std::string to_string() const;
 };
 
 }
diff --git a/cpp/include/cucumber/messages/meta.hpp b/cpp/include/cucumber/messages/meta.hpp
index 18d33892..a4e5ce10 100644
--- a/cpp/include/cucumber/messages/meta.hpp
+++ b/cpp/include/cucumber/messages/meta.hpp
@@ -30,7 +30,7 @@ struct meta : cucumber::message
     cucumber::messages::product cpu;
     cucumber::messages::ci ci;
 
-    std::string to_string() const override;
+    std::string to_string() const;
 };
 
 }
diff --git a/cpp/include/cucumber/messages/parameter_type.hpp b/cpp/include/cucumber/messages/parameter_type.hpp
index d753c4b6..fe1af92c 100644
--- a/cpp/include/cucumber/messages/parameter_type.hpp
+++ b/cpp/include/cucumber/messages/parameter_type.hpp
@@ -23,7 +23,7 @@ struct parameter_type : cucumber::message
     std::string id;
     cucumber::messages::source_reference source_reference;
 
-    std::string to_string() const override;
+    std::string to_string() const;
 };
 
 }
diff --git a/cpp/include/cucumber/messages/parse_error.hpp b/cpp/include/cucumber/messages/parse_error.hpp
index 30c72e9a..df0a176b 100644
--- a/cpp/include/cucumber/messages/parse_error.hpp
+++ b/cpp/include/cucumber/messages/parse_error.hpp
@@ -19,7 +19,7 @@ struct parse_error : cucumber::message
     cucumber::messages::source_reference source;
     std::string message;
 
-    std::string to_string() const override;
+    std::string to_string() const;
 };
 
 }
diff --git a/cpp/include/cucumber/messages/pickle.hpp b/cpp/include/cucumber/messages/pickle.hpp
index 6214e242..aa37a256 100644
--- a/cpp/include/cucumber/messages/pickle.hpp
+++ b/cpp/include/cucumber/messages/pickle.hpp
@@ -38,7 +38,7 @@ struct pickle : cucumber::message
     std::vector<cucumber::messages::pickle_tag> tags;
     std::vector<std::string> ast_node_ids;
 
-    std::string to_string() const override;
+    std::string to_string() const;
 };
 
 }
diff --git a/cpp/include/cucumber/messages/pickle_doc_string.hpp b/cpp/include/cucumber/messages/pickle_doc_string.hpp
index 50d70294..658e3f48 100644
--- a/cpp/include/cucumber/messages/pickle_doc_string.hpp
+++ b/cpp/include/cucumber/messages/pickle_doc_string.hpp
@@ -17,7 +17,7 @@ struct pickle_doc_string : cucumber::message
     std::string media_type;
     std::string content;
 
-    std::string to_string() const override;
+    std::string to_string() const;
 };
 
 }
diff --git a/cpp/include/cucumber/messages/pickle_step.hpp b/cpp/include/cucumber/messages/pickle_step.hpp
index 69e05b8b..de4879ed 100644
--- a/cpp/include/cucumber/messages/pickle_step.hpp
+++ b/cpp/include/cucumber/messages/pickle_step.hpp
@@ -25,7 +25,7 @@ struct pickle_step : cucumber::message
     cucumber::messages::pickle_step_type type;
     std::string text;
 
-    std::string to_string() const override;
+    std::string to_string() const;
 };
 
 }
diff --git a/cpp/include/cucumber/messages/pickle_step_argument.hpp b/cpp/include/cucumber/messages/pickle_step_argument.hpp
index 0c30f64b..7b988e2a 100644
--- a/cpp/include/cucumber/messages/pickle_step_argument.hpp
+++ b/cpp/include/cucumber/messages/pickle_step_argument.hpp
@@ -22,7 +22,7 @@ struct pickle_step_argument : cucumber::message
     cucumber::messages::pickle_doc_string doc_string;
     cucumber::messages::pickle_table data_table;
 
-    std::string to_string() const override;
+    std::string to_string() const;
 };
 
 }
diff --git a/cpp/include/cucumber/messages/pickle_table.hpp b/cpp/include/cucumber/messages/pickle_table.hpp
index ccde87e6..0166bd15 100644
--- a/cpp/include/cucumber/messages/pickle_table.hpp
+++ b/cpp/include/cucumber/messages/pickle_table.hpp
@@ -18,7 +18,7 @@ struct pickle_table : cucumber::message
 {
     std::vector<cucumber::messages::pickle_table_row> rows;
 
-    std::string to_string() const override;
+    std::string to_string() const;
 };
 
 }
diff --git a/cpp/include/cucumber/messages/pickle_table_cell.hpp b/cpp/include/cucumber/messages/pickle_table_cell.hpp
index fdab3447..5a2a57e2 100644
--- a/cpp/include/cucumber/messages/pickle_table_cell.hpp
+++ b/cpp/include/cucumber/messages/pickle_table_cell.hpp
@@ -16,7 +16,7 @@ struct pickle_table_cell : cucumber::message
 {
     std::string value;
 
-    std::string to_string() const override;
+    std::string to_string() const;
 };
 
 }
diff --git a/cpp/include/cucumber/messages/pickle_table_row.hpp b/cpp/include/cucumber/messages/pickle_table_row.hpp
index 22a4479e..fa2c0636 100644
--- a/cpp/include/cucumber/messages/pickle_table_row.hpp
+++ b/cpp/include/cucumber/messages/pickle_table_row.hpp
@@ -18,7 +18,7 @@ struct pickle_table_row : cucumber::message
 {
     std::vector<cucumber::messages::pickle_table_cell> cells;
 
-    std::string to_string() const override;
+    std::string to_string() const;
 };
 
 }
diff --git a/cpp/include/cucumber/messages/pickle_tag.hpp b/cpp/include/cucumber/messages/pickle_tag.hpp
index f7ff0518..1e961ede 100644
--- a/cpp/include/cucumber/messages/pickle_tag.hpp
+++ b/cpp/include/cucumber/messages/pickle_tag.hpp
@@ -19,7 +19,7 @@ struct pickle_tag : cucumber::message
     std::string name;
     std::string ast_node_id;
 
-    std::string to_string() const override;
+    std::string to_string() const;
 };
 
 }
diff --git a/cpp/include/cucumber/messages/product.hpp b/cpp/include/cucumber/messages/product.hpp
index 8aee270b..a25035a8 100644
--- a/cpp/include/cucumber/messages/product.hpp
+++ b/cpp/include/cucumber/messages/product.hpp
@@ -19,7 +19,7 @@ struct product : cucumber::message
     std::string name;
     std::string version;
 
-    std::string to_string() const override;
+    std::string to_string() const;
 };
 
 }
diff --git a/cpp/include/cucumber/messages/rule.hpp b/cpp/include/cucumber/messages/rule.hpp
index 124a9f3d..399fc2c1 100644
--- a/cpp/include/cucumber/messages/rule.hpp
+++ b/cpp/include/cucumber/messages/rule.hpp
@@ -26,7 +26,7 @@ struct rule : cucumber::message
     std::vector<cucumber::messages::rule_child> children;
     std::string id;
 
-    std::string to_string() const override;
+    std::string to_string() const;
 };
 
 }
diff --git a/cpp/include/cucumber/messages/rule_child.hpp b/cpp/include/cucumber/messages/rule_child.hpp
index ef2e62b4..e1214220 100644
--- a/cpp/include/cucumber/messages/rule_child.hpp
+++ b/cpp/include/cucumber/messages/rule_child.hpp
@@ -22,7 +22,7 @@ struct rule_child : cucumber::message
     cucumber::messages::background background;
     cucumber::messages::scenario scenario;
 
-    std::string to_string() const override;
+    std::string to_string() const;
 };
 
 }
diff --git a/cpp/include/cucumber/messages/scenario.hpp b/cpp/include/cucumber/messages/scenario.hpp
index 2eeb7ee4..2f2dd2ac 100644
--- a/cpp/include/cucumber/messages/scenario.hpp
+++ b/cpp/include/cucumber/messages/scenario.hpp
@@ -28,7 +28,7 @@ struct scenario : cucumber::message
     std::vector<cucumber::messages::examples> examples;
     std::string id;
 
-    std::string to_string() const override;
+    std::string to_string() const;
 };
 
 }
diff --git a/cpp/include/cucumber/messages/source.hpp b/cpp/include/cucumber/messages/source.hpp
index 49113881..f312cdf6 100644
--- a/cpp/include/cucumber/messages/source.hpp
+++ b/cpp/include/cucumber/messages/source.hpp
@@ -24,7 +24,7 @@ struct source : cucumber::message
     std::string data;
     cucumber::messages::source_media_type media_type;
 
-    std::string to_string() const override;
+    std::string to_string() const;
 };
 
 }
diff --git a/cpp/include/cucumber/messages/source_reference.hpp b/cpp/include/cucumber/messages/source_reference.hpp
index 0dde140d..ddf8d736 100644
--- a/cpp/include/cucumber/messages/source_reference.hpp
+++ b/cpp/include/cucumber/messages/source_reference.hpp
@@ -26,7 +26,7 @@ struct source_reference : cucumber::message
     cucumber::messages::java_stack_trace_element java_stack_trace_element;
     cucumber::messages::location location;
 
-    std::string to_string() const override;
+    std::string to_string() const;
 };
 
 }
diff --git a/cpp/include/cucumber/messages/step.hpp b/cpp/include/cucumber/messages/step.hpp
index fe2ec9a1..3a5ec69d 100644
--- a/cpp/include/cucumber/messages/step.hpp
+++ b/cpp/include/cucumber/messages/step.hpp
@@ -29,7 +29,7 @@ struct step : cucumber::message
     cucumber::messages::data_table data_table;
     std::string id;
 
-    std::string to_string() const override;
+    std::string to_string() const;
 };
 
 }
diff --git a/cpp/include/cucumber/messages/step_definition.hpp b/cpp/include/cucumber/messages/step_definition.hpp
index c3f7fa9f..87b3b96c 100644
--- a/cpp/include/cucumber/messages/step_definition.hpp
+++ b/cpp/include/cucumber/messages/step_definition.hpp
@@ -21,7 +21,7 @@ struct step_definition : cucumber::message
     cucumber::messages::step_definition_pattern pattern;
     cucumber::messages::source_reference source_reference;
 
-    std::string to_string() const override;
+    std::string to_string() const;
 };
 
 }
diff --git a/cpp/include/cucumber/messages/step_definition_pattern.hpp b/cpp/include/cucumber/messages/step_definition_pattern.hpp
index 9477e6f5..e14e5d26 100644
--- a/cpp/include/cucumber/messages/step_definition_pattern.hpp
+++ b/cpp/include/cucumber/messages/step_definition_pattern.hpp
@@ -19,7 +19,7 @@ struct step_definition_pattern : cucumber::message
     std::string source;
     cucumber::messages::step_definition_pattern_type type;
 
-    std::string to_string() const override;
+    std::string to_string() const;
 };
 
 }
diff --git a/cpp/include/cucumber/messages/step_match_argument.hpp b/cpp/include/cucumber/messages/step_match_argument.hpp
index 7d7af9c1..c03bd9e9 100644
--- a/cpp/include/cucumber/messages/step_match_argument.hpp
+++ b/cpp/include/cucumber/messages/step_match_argument.hpp
@@ -26,7 +26,7 @@ struct step_match_argument : cucumber::message
     cucumber::messages::group group;
     std::string parameter_type_name;
 
-    std::string to_string() const override;
+    std::string to_string() const;
 };
 
 }
diff --git a/cpp/include/cucumber/messages/step_match_arguments_list.hpp b/cpp/include/cucumber/messages/step_match_arguments_list.hpp
index acccaa1d..aa4a9316 100644
--- a/cpp/include/cucumber/messages/step_match_arguments_list.hpp
+++ b/cpp/include/cucumber/messages/step_match_arguments_list.hpp
@@ -18,7 +18,7 @@ struct step_match_arguments_list : cucumber::message
 {
     std::vector<cucumber::messages::step_match_argument> step_match_arguments;
 
-    std::string to_string() const override;
+    std::string to_string() const;
 };
 
 }
diff --git a/cpp/include/cucumber/messages/table_cell.hpp b/cpp/include/cucumber/messages/table_cell.hpp
index acd7810e..664fb288 100644
--- a/cpp/include/cucumber/messages/table_cell.hpp
+++ b/cpp/include/cucumber/messages/table_cell.hpp
@@ -21,7 +21,7 @@ struct table_cell : cucumber::message
     cucumber::messages::location location;
     std::string value;
 
-    std::string to_string() const override;
+    std::string to_string() const;
 };
 
 }
diff --git a/cpp/include/cucumber/messages/table_row.hpp b/cpp/include/cucumber/messages/table_row.hpp
index 3e0b3cb6..4ea9b94d 100644
--- a/cpp/include/cucumber/messages/table_row.hpp
+++ b/cpp/include/cucumber/messages/table_row.hpp
@@ -23,7 +23,7 @@ struct table_row : cucumber::message
     std::vector<cucumber::messages::table_cell> cells;
     std::string id;
 
-    std::string to_string() const override;
+    std::string to_string() const;
 };
 
 }
diff --git a/cpp/include/cucumber/messages/tag.hpp b/cpp/include/cucumber/messages/tag.hpp
index b5566a35..a85bf370 100644
--- a/cpp/include/cucumber/messages/tag.hpp
+++ b/cpp/include/cucumber/messages/tag.hpp
@@ -22,7 +22,7 @@ struct tag : cucumber::message
     std::string name;
     std::string id;
 
-    std::string to_string() const override;
+    std::string to_string() const;
 };
 
 }
diff --git a/cpp/include/cucumber/messages/test_case.hpp b/cpp/include/cucumber/messages/test_case.hpp
index 69ab921b..6e150da8 100644
--- a/cpp/include/cucumber/messages/test_case.hpp
+++ b/cpp/include/cucumber/messages/test_case.hpp
@@ -24,7 +24,7 @@ struct test_case : cucumber::message
     std::string pickle_id;
     std::vector<cucumber::messages::test_step> test_steps;
 
-    std::string to_string() const override;
+    std::string to_string() const;
 };
 
 }
diff --git a/cpp/include/cucumber/messages/test_case_finished.hpp b/cpp/include/cucumber/messages/test_case_finished.hpp
index ca474b55..6285fdab 100644
--- a/cpp/include/cucumber/messages/test_case_finished.hpp
+++ b/cpp/include/cucumber/messages/test_case_finished.hpp
@@ -20,7 +20,7 @@ struct test_case_finished : cucumber::message
     cucumber::messages::timestamp timestamp;
     bool will_be_retried;
 
-    std::string to_string() const override;
+    std::string to_string() const;
 };
 
 }
diff --git a/cpp/include/cucumber/messages/test_case_started.hpp b/cpp/include/cucumber/messages/test_case_started.hpp
index 5460a331..deb6012b 100644
--- a/cpp/include/cucumber/messages/test_case_started.hpp
+++ b/cpp/include/cucumber/messages/test_case_started.hpp
@@ -22,7 +22,7 @@ struct test_case_started : cucumber::message
     std::string worker_id;
     cucumber::messages::timestamp timestamp;
 
-    std::string to_string() const override;
+    std::string to_string() const;
 };
 
 }
diff --git a/cpp/include/cucumber/messages/test_run_finished.hpp b/cpp/include/cucumber/messages/test_run_finished.hpp
index f01b030d..f8e11360 100644
--- a/cpp/include/cucumber/messages/test_run_finished.hpp
+++ b/cpp/include/cucumber/messages/test_run_finished.hpp
@@ -22,7 +22,7 @@ struct test_run_finished : cucumber::message
     cucumber::messages::timestamp timestamp;
     cucumber::messages::exception exception;
 
-    std::string to_string() const override;
+    std::string to_string() const;
 };
 
 }
diff --git a/cpp/include/cucumber/messages/test_run_started.hpp b/cpp/include/cucumber/messages/test_run_started.hpp
index 9486ebc8..6195cae0 100644
--- a/cpp/include/cucumber/messages/test_run_started.hpp
+++ b/cpp/include/cucumber/messages/test_run_started.hpp
@@ -18,7 +18,7 @@ struct test_run_started : cucumber::message
 {
     cucumber::messages::timestamp timestamp;
 
-    std::string to_string() const override;
+    std::string to_string() const;
 };
 
 }
diff --git a/cpp/include/cucumber/messages/test_step.hpp b/cpp/include/cucumber/messages/test_step.hpp
index 2d03d250..027dbfc3 100644
--- a/cpp/include/cucumber/messages/test_step.hpp
+++ b/cpp/include/cucumber/messages/test_step.hpp
@@ -25,7 +25,7 @@ struct test_step : cucumber::message
     std::vector<std::string> step_definition_ids;
     std::vector<cucumber::messages::step_match_arguments_list> step_match_arguments_lists;
 
-    std::string to_string() const override;
+    std::string to_string() const;
 };
 
 }
diff --git a/cpp/include/cucumber/messages/test_step_finished.hpp b/cpp/include/cucumber/messages/test_step_finished.hpp
index e24cd929..9934d92a 100644
--- a/cpp/include/cucumber/messages/test_step_finished.hpp
+++ b/cpp/include/cucumber/messages/test_step_finished.hpp
@@ -22,7 +22,7 @@ struct test_step_finished : cucumber::message
     cucumber::messages::test_step_result test_step_result;
     cucumber::messages::timestamp timestamp;
 
-    std::string to_string() const override;
+    std::string to_string() const;
 };
 
 }
diff --git a/cpp/include/cucumber/messages/test_step_result.hpp b/cpp/include/cucumber/messages/test_step_result.hpp
index de5bbe5e..c647d48f 100644
--- a/cpp/include/cucumber/messages/test_step_result.hpp
+++ b/cpp/include/cucumber/messages/test_step_result.hpp
@@ -23,7 +23,7 @@ struct test_step_result : cucumber::message
     cucumber::messages::test_step_result_status status;
     cucumber::messages::exception exception;
 
-    std::string to_string() const override;
+    std::string to_string() const;
 };
 
 }
diff --git a/cpp/include/cucumber/messages/test_step_started.hpp b/cpp/include/cucumber/messages/test_step_started.hpp
index 714cf9a7..7c427217 100644
--- a/cpp/include/cucumber/messages/test_step_started.hpp
+++ b/cpp/include/cucumber/messages/test_step_started.hpp
@@ -20,7 +20,7 @@ struct test_step_started : cucumber::message
     std::string test_step_id;
     cucumber::messages::timestamp timestamp;
 
-    std::string to_string() const override;
+    std::string to_string() const;
 };
 
 }
diff --git a/cpp/include/cucumber/messages/timestamp.hpp b/cpp/include/cucumber/messages/timestamp.hpp
index e7a7d87b..77440fa9 100644
--- a/cpp/include/cucumber/messages/timestamp.hpp
+++ b/cpp/include/cucumber/messages/timestamp.hpp
@@ -17,7 +17,7 @@ struct timestamp : cucumber::message
     std::size_t seconds;
     std::size_t nanos;
 
-    std::string to_string() const override;
+    std::string to_string() const;
 };
 
 }
diff --git a/cpp/include/cucumber/messages/undefined_parameter_type.hpp b/cpp/include/cucumber/messages/undefined_parameter_type.hpp
index 91d5378c..3a537365 100644
--- a/cpp/include/cucumber/messages/undefined_parameter_type.hpp
+++ b/cpp/include/cucumber/messages/undefined_parameter_type.hpp
@@ -17,7 +17,7 @@ struct undefined_parameter_type : cucumber::message
     std::string expression;
     std::string name;
 
-    std::string to_string() const override;
+    std::string to_string() const;
 };
 
 }
diff --git a/cpp/src/lib/cucumber-messages/CMakeLists.txt b/cpp/src/lib/cucumber-messages/CMakeLists.txt
index 6ab0831c..8ee678d7 100644
--- a/cpp/src/lib/cucumber-messages/CMakeLists.txt
+++ b/cpp/src/lib/cucumber-messages/CMakeLists.txt
@@ -3,6 +3,10 @@ add_library(cucumber::messages ALIAS cucumber-messages)
 
 set(INC_DIR "${CMAKE_SOURCE_DIR}/include")
 
+# We prefer it that way...
+file(GLOB_RECURSE CUCUMBER_MESSAGES_HEADERS ${INC_DIR}/*.[ch]pp)
+file(GLOB_RECURSE CUCUMBER_MESSAGES_SOURCES ${CMAKE_CURRENT_SOURCE_DIR}/*.[ch]pp)
+
 target_sources(
     cucumber-messages
     PUBLIC
@@ -11,125 +15,9 @@ target_sources(
         TYPE HEADERS
         BASE_DIRS ${INC_DIR}
         FILES
-        ${INC_DIR}/cucumber/message.hpp
-        ${INC_DIR}/cucumber/messages/attachment_content_encoding.hpp
-        ${INC_DIR}/cucumber/messages/attachment.hpp
-        ${INC_DIR}/cucumber/messages/background.hpp
-        ${INC_DIR}/cucumber/messages/ci.hpp
-        ${INC_DIR}/cucumber/messages/comment.hpp
-        ${INC_DIR}/cucumber/messages/data_table.hpp
-        ${INC_DIR}/cucumber/messages/doc_string.hpp
-        ${INC_DIR}/cucumber/messages/duration.hpp
-        ${INC_DIR}/cucumber/messages/envelope.hpp
-        ${INC_DIR}/cucumber/messages/examples.hpp
-        ${INC_DIR}/cucumber/messages/exception.hpp
-        ${INC_DIR}/cucumber/messages/feature_child.hpp
-        ${INC_DIR}/cucumber/messages/feature.hpp
-        ${INC_DIR}/cucumber/messages/gherkin_document.hpp
-        ${INC_DIR}/cucumber/messages/git.hpp
-        ${INC_DIR}/cucumber/messages/group.hpp
-        ${INC_DIR}/cucumber/messages/hook.hpp
-        ${INC_DIR}/cucumber/messages/java_method.hpp
-        ${INC_DIR}/cucumber/messages/java_stack_trace_element.hpp
-        ${INC_DIR}/cucumber/messages/location.hpp
-        ${INC_DIR}/cucumber/messages/meta.hpp
-        ${INC_DIR}/cucumber/messages/parameter_type.hpp
-        ${INC_DIR}/cucumber/messages/parse_error.hpp
-        ${INC_DIR}/cucumber/messages/pickle_doc_string.hpp
-        ${INC_DIR}/cucumber/messages/pickle.hpp
-        ${INC_DIR}/cucumber/messages/pickle_step_argument.hpp
-        ${INC_DIR}/cucumber/messages/pickle_step.hpp
-        ${INC_DIR}/cucumber/messages/pickle_step_type.hpp
-        ${INC_DIR}/cucumber/messages/pickle_table_cell.hpp
-        ${INC_DIR}/cucumber/messages/pickle_table.hpp
-        ${INC_DIR}/cucumber/messages/pickle_table_row.hpp
-        ${INC_DIR}/cucumber/messages/pickle_tag.hpp
-        ${INC_DIR}/cucumber/messages/product.hpp
-        ${INC_DIR}/cucumber/messages/rule_child.hpp
-        ${INC_DIR}/cucumber/messages/rule.hpp
-        ${INC_DIR}/cucumber/messages/scenario.hpp
-        ${INC_DIR}/cucumber/messages/source.hpp
-        ${INC_DIR}/cucumber/messages/source_media_type.hpp
-        ${INC_DIR}/cucumber/messages/source_reference.hpp
-        ${INC_DIR}/cucumber/messages/step_definition.hpp
-        ${INC_DIR}/cucumber/messages/step_definition_pattern.hpp
-        ${INC_DIR}/cucumber/messages/step_definition_pattern_type.hpp
-        ${INC_DIR}/cucumber/messages/step.hpp
-        ${INC_DIR}/cucumber/messages/step_keyword_type.hpp
-        ${INC_DIR}/cucumber/messages/step_match_argument.hpp
-        ${INC_DIR}/cucumber/messages/step_match_arguments_list.hpp
-        ${INC_DIR}/cucumber/messages/table_cell.hpp
-        ${INC_DIR}/cucumber/messages/table_row.hpp
-        ${INC_DIR}/cucumber/messages/tag.hpp
-        ${INC_DIR}/cucumber/messages/test_case_finished.hpp
-        ${INC_DIR}/cucumber/messages/test_case.hpp
-        ${INC_DIR}/cucumber/messages/test_case_started.hpp
-        ${INC_DIR}/cucumber/messages/test_run_finished.hpp
-        ${INC_DIR}/cucumber/messages/test_run_started.hpp
-        ${INC_DIR}/cucumber/messages/test_step_finished.hpp
-        ${INC_DIR}/cucumber/messages/test_step.hpp
-        ${INC_DIR}/cucumber/messages/test_step_result.hpp
-        ${INC_DIR}/cucumber/messages/test_step_result_status.hpp
-        ${INC_DIR}/cucumber/messages/test_step_started.hpp
-        ${INC_DIR}/cucumber/messages/timestamp.hpp
-        ${INC_DIR}/cucumber/messages/undefined_parameter_type.hpp
+        ${CUCUMBER_MESSAGES_HEADERS}
     PRIVATE
-        ${CMAKE_CURRENT_SOURCE_DIR}/cucumber/utils.hpp
-        ${CMAKE_CURRENT_SOURCE_DIR}/cucumber/messages/attachment.cpp
-        ${CMAKE_CURRENT_SOURCE_DIR}/cucumber/messages/background.cpp
-        ${CMAKE_CURRENT_SOURCE_DIR}/cucumber/messages/ci.cpp
-        ${CMAKE_CURRENT_SOURCE_DIR}/cucumber/messages/comment.cpp
-        ${CMAKE_CURRENT_SOURCE_DIR}/cucumber/messages/data_table.cpp
-        ${CMAKE_CURRENT_SOURCE_DIR}/cucumber/messages/doc_string.cpp
-        ${CMAKE_CURRENT_SOURCE_DIR}/cucumber/messages/duration.cpp
-        ${CMAKE_CURRENT_SOURCE_DIR}/cucumber/messages/envelope.cpp
-        ${CMAKE_CURRENT_SOURCE_DIR}/cucumber/messages/examples.cpp
-        ${CMAKE_CURRENT_SOURCE_DIR}/cucumber/messages/exception.cpp
-        ${CMAKE_CURRENT_SOURCE_DIR}/cucumber/messages/feature_child.cpp
-        ${CMAKE_CURRENT_SOURCE_DIR}/cucumber/messages/feature.cpp
-        ${CMAKE_CURRENT_SOURCE_DIR}/cucumber/messages/gherkin_document.cpp
-        ${CMAKE_CURRENT_SOURCE_DIR}/cucumber/messages/git.cpp
-        ${CMAKE_CURRENT_SOURCE_DIR}/cucumber/messages/group.cpp
-        ${CMAKE_CURRENT_SOURCE_DIR}/cucumber/messages/hook.cpp
-        ${CMAKE_CURRENT_SOURCE_DIR}/cucumber/messages/java_method.cpp
-        ${CMAKE_CURRENT_SOURCE_DIR}/cucumber/messages/java_stack_trace_element.cpp
-        ${CMAKE_CURRENT_SOURCE_DIR}/cucumber/messages/location.cpp
-        ${CMAKE_CURRENT_SOURCE_DIR}/cucumber/messages/meta.cpp
-        ${CMAKE_CURRENT_SOURCE_DIR}/cucumber/messages/parameter_type.cpp
-        ${CMAKE_CURRENT_SOURCE_DIR}/cucumber/messages/parse_error.cpp
-        ${CMAKE_CURRENT_SOURCE_DIR}/cucumber/messages/pickle.cpp
-        ${CMAKE_CURRENT_SOURCE_DIR}/cucumber/messages/pickle_doc_string.cpp
-        ${CMAKE_CURRENT_SOURCE_DIR}/cucumber/messages/pickle_step_argument.cpp
-        ${CMAKE_CURRENT_SOURCE_DIR}/cucumber/messages/pickle_step.cpp
-        ${CMAKE_CURRENT_SOURCE_DIR}/cucumber/messages/pickle_table_cell.cpp
-        ${CMAKE_CURRENT_SOURCE_DIR}/cucumber/messages/pickle_table.cpp
-        ${CMAKE_CURRENT_SOURCE_DIR}/cucumber/messages/pickle_table_row.cpp
-        ${CMAKE_CURRENT_SOURCE_DIR}/cucumber/messages/pickle_tag.cpp
-        ${CMAKE_CURRENT_SOURCE_DIR}/cucumber/messages/product.cpp
-        ${CMAKE_CURRENT_SOURCE_DIR}/cucumber/messages/rule_child.cpp
-        ${CMAKE_CURRENT_SOURCE_DIR}/cucumber/messages/rule.cpp
-        ${CMAKE_CURRENT_SOURCE_DIR}/cucumber/messages/scenario.cpp
-        ${CMAKE_CURRENT_SOURCE_DIR}/cucumber/messages/source.cpp
-        ${CMAKE_CURRENT_SOURCE_DIR}/cucumber/messages/source_reference.cpp
-        ${CMAKE_CURRENT_SOURCE_DIR}/cucumber/messages/step.cpp
-        ${CMAKE_CURRENT_SOURCE_DIR}/cucumber/messages/step_definition.cpp
-        ${CMAKE_CURRENT_SOURCE_DIR}/cucumber/messages/step_definition_pattern.cpp
-        ${CMAKE_CURRENT_SOURCE_DIR}/cucumber/messages/step_match_argument.cpp
-        ${CMAKE_CURRENT_SOURCE_DIR}/cucumber/messages/step_match_arguments_list.cpp
-        ${CMAKE_CURRENT_SOURCE_DIR}/cucumber/messages/table_cell.cpp
-        ${CMAKE_CURRENT_SOURCE_DIR}/cucumber/messages/table_row.cpp
-        ${CMAKE_CURRENT_SOURCE_DIR}/cucumber/messages/tag.cpp
-        ${CMAKE_CURRENT_SOURCE_DIR}/cucumber/messages/test_case.cpp
-        ${CMAKE_CURRENT_SOURCE_DIR}/cucumber/messages/test_case_finished.cpp
-        ${CMAKE_CURRENT_SOURCE_DIR}/cucumber/messages/test_case_started.cpp
-        ${CMAKE_CURRENT_SOURCE_DIR}/cucumber/messages/test_run_finished.cpp
-        ${CMAKE_CURRENT_SOURCE_DIR}/cucumber/messages/test_run_started.cpp
-        ${CMAKE_CURRENT_SOURCE_DIR}/cucumber/messages/test_step.cpp
-        ${CMAKE_CURRENT_SOURCE_DIR}/cucumber/messages/test_step_finished.cpp
-        ${CMAKE_CURRENT_SOURCE_DIR}/cucumber/messages/test_step_result.cpp
-        ${CMAKE_CURRENT_SOURCE_DIR}/cucumber/messages/test_step_started.cpp
-        ${CMAKE_CURRENT_SOURCE_DIR}/cucumber/messages/timestamp.cpp
-        ${CMAKE_CURRENT_SOURCE_DIR}/cucumber/messages/undefined_parameter_type.cpp
+        ${CUCUMBER_MESSAGES_SOURCES}
 )
 
 target_include_directories(
diff --git a/cpp/src/lib/cucumber-messages/cucumber/message.cpp b/cpp/src/lib/cucumber-messages/cucumber/message.cpp
new file mode 100644
index 00000000..4b6e855a
--- /dev/null
+++ b/cpp/src/lib/cucumber-messages/cucumber/message.cpp
@@ -0,0 +1,9 @@
+#include <cucumber/message.hpp>
+
+namespace cucumber {
+
+std::string
+message::to_string() const
+{ return "message"; }
+
+}
diff --git a/jsonschema/scripts/templates/cpp.hpp.erb b/jsonschema/scripts/templates/cpp.hpp.erb
index 088d4c51..6d6b0efc 100644
--- a/jsonschema/scripts/templates/cpp.hpp.erb
+++ b/jsonschema/scripts/templates/cpp.hpp.erb
@@ -55,7 +55,7 @@ struct <%= myclass %> : cucumber::message
     <%- end -%>
   <%- end -%>
 
-    std::string to_string() const override;
+    std::string to_string() const;
 };
 
 }

From 0a144c562bbd73e2580c2dcef47a83df67567365 Mon Sep 17 00:00:00 2001
From: Remy Chibois <remy@chybz.net>
Date: Fri, 5 May 2023 18:28:59 +0200
Subject: [PATCH 08/26] chore: fixed enum

---
 .../messages/attachment_content_encoding.cpp       |  4 ++--
 .../cucumber/messages/pickle_step_type.cpp         |  8 ++++----
 .../cucumber/messages/source_media_type.cpp        |  4 ++--
 .../messages/step_definition_pattern_type.cpp      |  4 ++--
 .../cucumber/messages/step_keyword_type.cpp        | 10 +++++-----
 .../cucumber/messages/test_step_result_status.cpp  | 14 +++++++-------
 jsonschema/scripts/templates/cpp.enum.hpp.erb      |  2 +-
 7 files changed, 23 insertions(+), 23 deletions(-)

diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/attachment_content_encoding.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/attachment_content_encoding.cpp
index 9a0e272c..22cde9f8 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/attachment_content_encoding.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/attachment_content_encoding.cpp
@@ -10,8 +10,8 @@ to_string(attachment_content_encoding v)
     using map_type = std::unordered_map<attachment_content_encoding, std::string_view>;
 
     static const map_type m = {
-        { IDENTITY, "IDENTITY" },
-        { BASE64, "BASE64" }
+        { attachment_content_encoding::IDENTITY, "IDENTITY" },
+        { attachment_content_encoding::BASE64, "BASE64" }
     };
 
     return m.at(v);
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_step_type.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_step_type.cpp
index 9e8d1d7a..897da3c4 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_step_type.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_step_type.cpp
@@ -10,10 +10,10 @@ to_string(pickle_step_type v)
     using map_type = std::unordered_map<pickle_step_type, std::string_view>;
 
     static const map_type m = {
-        { UNKNOWN, "Unknown" },
-        { CONTEXT, "Context" },
-        { ACTION, "Action" },
-        { OUTCOME, "Outcome" }
+        { pickle_step_type::UNKNOWN, "Unknown" },
+        { pickle_step_type::CONTEXT, "Context" },
+        { pickle_step_type::ACTION, "Action" },
+        { pickle_step_type::OUTCOME, "Outcome" }
     };
 
     return m.at(v);
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/source_media_type.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/source_media_type.cpp
index 35439aa4..550ba295 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/source_media_type.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/source_media_type.cpp
@@ -10,8 +10,8 @@ to_string(source_media_type v)
     using map_type = std::unordered_map<source_media_type, std::string_view>;
 
     static const map_type m = {
-        { TEXT_X_CUCUMBER_GHERKIN_PLAIN, "text/x.cucumber.gherkin+plain" },
-        { TEXT_X_CUCUMBER_GHERKIN_MARKDOWN, "text/x.cucumber.gherkin+markdown" }
+        { source_media_type::TEXT_X_CUCUMBER_GHERKIN_PLAIN, "text/x.cucumber.gherkin+plain" },
+        { source_media_type::TEXT_X_CUCUMBER_GHERKIN_MARKDOWN, "text/x.cucumber.gherkin+markdown" }
     };
 
     return m.at(v);
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/step_definition_pattern_type.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/step_definition_pattern_type.cpp
index c67ddf35..101afeb7 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/step_definition_pattern_type.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/step_definition_pattern_type.cpp
@@ -10,8 +10,8 @@ to_string(step_definition_pattern_type v)
     using map_type = std::unordered_map<step_definition_pattern_type, std::string_view>;
 
     static const map_type m = {
-        { CUCUMBER_EXPRESSION, "CUCUMBER_EXPRESSION" },
-        { REGULAR_EXPRESSION, "REGULAR_EXPRESSION" }
+        { step_definition_pattern_type::CUCUMBER_EXPRESSION, "CUCUMBER_EXPRESSION" },
+        { step_definition_pattern_type::REGULAR_EXPRESSION, "REGULAR_EXPRESSION" }
     };
 
     return m.at(v);
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/step_keyword_type.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/step_keyword_type.cpp
index 6d82d017..ff13059c 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/step_keyword_type.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/step_keyword_type.cpp
@@ -10,11 +10,11 @@ to_string(step_keyword_type v)
     using map_type = std::unordered_map<step_keyword_type, std::string_view>;
 
     static const map_type m = {
-        { UNKNOWN, "Unknown" },
-        { CONTEXT, "Context" },
-        { ACTION, "Action" },
-        { OUTCOME, "Outcome" },
-        { CONJUNCTION, "Conjunction" }
+        { step_keyword_type::UNKNOWN, "Unknown" },
+        { step_keyword_type::CONTEXT, "Context" },
+        { step_keyword_type::ACTION, "Action" },
+        { step_keyword_type::OUTCOME, "Outcome" },
+        { step_keyword_type::CONJUNCTION, "Conjunction" }
     };
 
     return m.at(v);
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/test_step_result_status.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/test_step_result_status.cpp
index 620abbbf..f7ae9ccc 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/test_step_result_status.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/test_step_result_status.cpp
@@ -10,13 +10,13 @@ to_string(test_step_result_status v)
     using map_type = std::unordered_map<test_step_result_status, std::string_view>;
 
     static const map_type m = {
-        { UNKNOWN, "UNKNOWN" },
-        { PASSED, "PASSED" },
-        { SKIPPED, "SKIPPED" },
-        { PENDING, "PENDING" },
-        { UNDEFINED, "UNDEFINED" },
-        { AMBIGUOUS, "AMBIGUOUS" },
-        { FAILED, "FAILED" }
+        { test_step_result_status::UNKNOWN, "UNKNOWN" },
+        { test_step_result_status::PASSED, "PASSED" },
+        { test_step_result_status::SKIPPED, "SKIPPED" },
+        { test_step_result_status::PENDING, "PENDING" },
+        { test_step_result_status::UNDEFINED, "UNDEFINED" },
+        { test_step_result_status::AMBIGUOUS, "AMBIGUOUS" },
+        { test_step_result_status::FAILED, "FAILED" }
     };
 
     return m.at(v);
diff --git a/jsonschema/scripts/templates/cpp.enum.hpp.erb b/jsonschema/scripts/templates/cpp.enum.hpp.erb
index 111213ce..3cc4b2e0 100644
--- a/jsonschema/scripts/templates/cpp.enum.hpp.erb
+++ b/jsonschema/scripts/templates/cpp.enum.hpp.erb
@@ -36,7 +36,7 @@ to_string(<%= ename %> v)
 
     static const map_type m = {
 <%- enum[:values].each_with_index do |value, index| -%>
-        { <%= enum_constant(value) %>, "<%= value %>" }<%= index < enum[:values].length-1 ? ',' : '' %>
+        { <%= ename %>::<%= enum_constant(value) %>, "<%= value %>" }<%= index < enum[:values].length-1 ? ',' : '' %>
 <% end -%>
     };
 

From 20a40e3b1b93e5d70db29b5d87ec159df8bcad20 Mon Sep 17 00:00:00 2001
From: Remy Chibois <remy@chybz.net>
Date: Sat, 6 May 2023 11:18:05 +0200
Subject: [PATCH 09/26] chore: removed inheritance

---
 cpp/Makefile                                  | 14 +++---
 cpp/include/cucumber/message.hpp              | 45 -------------------
 cpp/include/cucumber/messages/attachment.hpp  |  8 ++--
 cpp/include/cucumber/messages/background.hpp  |  8 ++--
 cpp/include/cucumber/messages/ci.hpp          |  8 ++--
 cpp/include/cucumber/messages/comment.hpp     |  8 ++--
 cpp/include/cucumber/messages/data_table.hpp  |  8 ++--
 cpp/include/cucumber/messages/doc_string.hpp  |  8 ++--
 cpp/include/cucumber/messages/duration.hpp    |  8 ++--
 cpp/include/cucumber/messages/envelope.hpp    |  8 ++--
 cpp/include/cucumber/messages/examples.hpp    |  8 ++--
 cpp/include/cucumber/messages/exception.hpp   |  8 ++--
 cpp/include/cucumber/messages/feature.hpp     |  8 ++--
 .../cucumber/messages/feature_child.hpp       |  8 ++--
 .../cucumber/messages/gherkin_document.hpp    |  8 ++--
 cpp/include/cucumber/messages/git.hpp         |  8 ++--
 cpp/include/cucumber/messages/group.hpp       |  8 ++--
 cpp/include/cucumber/messages/hook.hpp        |  8 ++--
 cpp/include/cucumber/messages/java_method.hpp |  8 ++--
 .../messages/java_stack_trace_element.hpp     |  8 ++--
 cpp/include/cucumber/messages/location.hpp    |  8 ++--
 cpp/include/cucumber/messages/meta.hpp        |  8 ++--
 .../cucumber/messages/parameter_type.hpp      |  8 ++--
 cpp/include/cucumber/messages/parse_error.hpp |  8 ++--
 cpp/include/cucumber/messages/pickle.hpp      |  8 ++--
 .../cucumber/messages/pickle_doc_string.hpp   |  8 ++--
 cpp/include/cucumber/messages/pickle_step.hpp |  8 ++--
 .../messages/pickle_step_argument.hpp         |  8 ++--
 .../cucumber/messages/pickle_table.hpp        |  8 ++--
 .../cucumber/messages/pickle_table_cell.hpp   |  8 ++--
 .../cucumber/messages/pickle_table_row.hpp    |  8 ++--
 cpp/include/cucumber/messages/pickle_tag.hpp  |  8 ++--
 cpp/include/cucumber/messages/product.hpp     |  8 ++--
 cpp/include/cucumber/messages/rule.hpp        |  8 ++--
 cpp/include/cucumber/messages/rule_child.hpp  |  8 ++--
 cpp/include/cucumber/messages/scenario.hpp    |  8 ++--
 cpp/include/cucumber/messages/source.hpp      |  8 ++--
 .../cucumber/messages/source_reference.hpp    |  8 ++--
 cpp/include/cucumber/messages/step.hpp        |  8 ++--
 .../cucumber/messages/step_definition.hpp     |  8 ++--
 .../messages/step_definition_pattern.hpp      |  8 ++--
 .../cucumber/messages/step_match_argument.hpp |  8 ++--
 .../messages/step_match_arguments_list.hpp    |  8 ++--
 cpp/include/cucumber/messages/table_cell.hpp  |  8 ++--
 cpp/include/cucumber/messages/table_row.hpp   |  8 ++--
 cpp/include/cucumber/messages/tag.hpp         |  8 ++--
 cpp/include/cucumber/messages/test_case.hpp   |  8 ++--
 .../cucumber/messages/test_case_finished.hpp  |  8 ++--
 .../cucumber/messages/test_case_started.hpp   |  8 ++--
 .../cucumber/messages/test_run_finished.hpp   |  8 ++--
 .../cucumber/messages/test_run_started.hpp    |  8 ++--
 cpp/include/cucumber/messages/test_step.hpp   |  8 ++--
 .../cucumber/messages/test_step_finished.hpp  |  8 ++--
 .../cucumber/messages/test_step_result.hpp    |  8 ++--
 .../cucumber/messages/test_step_started.hpp   |  8 ++--
 cpp/include/cucumber/messages/timestamp.hpp   |  8 ++--
 .../messages/undefined_parameter_type.hpp     |  8 ++--
 .../cucumber-messages/cucumber/message.cpp    |  9 ----
 .../cucumber/messages/attachment.cpp          | 26 +++++++----
 .../cucumber/messages/background.cpp          | 22 ++++++---
 .../cucumber/messages/ci.cpp                  | 18 +++++---
 .../cucumber/messages/comment.cpp             | 14 ++++--
 .../cucumber/messages/data_table.cpp          | 14 ++++--
 .../cucumber/messages/doc_string.cpp          | 18 +++++---
 .../cucumber/messages/duration.cpp            | 14 ++++--
 .../cucumber/messages/envelope.cpp            | 44 ++++++++++--------
 .../cucumber/messages/examples.cpp            | 26 +++++++----
 .../cucumber/messages/exception.cpp           | 14 ++++--
 .../cucumber/messages/feature.cpp             | 24 ++++++----
 .../cucumber/messages/feature_child.cpp       | 16 +++++--
 .../cucumber/messages/gherkin_document.cpp    | 16 +++++--
 .../cucumber/messages/git.cpp                 | 18 +++++---
 .../cucumber/messages/group.cpp               | 16 +++++--
 .../cucumber/messages/hook.cpp                | 18 +++++---
 .../cucumber/messages/java_method.cpp         | 16 +++++--
 .../messages/java_stack_trace_element.cpp     | 16 +++++--
 .../cucumber/messages/location.cpp            | 14 ++++--
 .../cucumber/messages/meta.cpp                | 22 ++++++---
 .../cucumber/messages/parameter_type.cpp      | 22 ++++++---
 .../cucumber/messages/parse_error.cpp         | 14 ++++--
 .../cucumber/messages/pickle.cpp              | 24 ++++++----
 .../cucumber/messages/pickle_doc_string.cpp   | 14 ++++--
 .../cucumber/messages/pickle_step.cpp         | 20 ++++++---
 .../messages/pickle_step_argument.cpp         | 14 ++++--
 .../cucumber/messages/pickle_table.cpp        | 12 ++++-
 .../cucumber/messages/pickle_table_cell.cpp   | 12 ++++-
 .../cucumber/messages/pickle_table_row.cpp    | 12 ++++-
 .../cucumber/messages/pickle_tag.cpp          | 14 ++++--
 .../cucumber/messages/product.cpp             | 14 ++++--
 .../cucumber/messages/rule.cpp                | 24 ++++++----
 .../cucumber/messages/rule_child.cpp          | 14 ++++--
 .../cucumber/messages/scenario.cpp            | 26 +++++++----
 .../cucumber/messages/source.cpp              | 16 +++++--
 .../cucumber/messages/source_reference.cpp    | 18 +++++---
 .../cucumber/messages/step.cpp                | 24 ++++++----
 .../cucumber/messages/step_definition.cpp     | 16 +++++--
 .../messages/step_definition_pattern.cpp      | 14 ++++--
 .../cucumber/messages/step_match_argument.cpp | 14 ++++--
 .../messages/step_match_arguments_list.cpp    | 12 ++++-
 .../cucumber/messages/table_cell.cpp          | 14 ++++--
 .../cucumber/messages/table_row.cpp           | 16 +++++--
 .../cucumber/messages/tag.cpp                 | 16 +++++--
 .../cucumber/messages/test_case.cpp           | 16 +++++--
 .../cucumber/messages/test_case_finished.cpp  | 16 +++++--
 .../cucumber/messages/test_case_started.cpp   | 20 ++++++---
 .../cucumber/messages/test_run_finished.cpp   | 18 +++++---
 .../cucumber/messages/test_run_started.cpp    | 12 ++++-
 .../cucumber/messages/test_step.cpp           | 20 ++++++---
 .../cucumber/messages/test_step_finished.cpp  | 18 +++++---
 .../cucumber/messages/test_step_result.cpp    | 18 +++++---
 .../cucumber/messages/test_step_started.cpp   | 16 +++++--
 .../cucumber/messages/timestamp.cpp           | 14 ++++--
 .../messages/undefined_parameter_type.cpp     | 14 ++++--
 .../cucumber/messages/utils.hpp               | 23 ++++++++++
 .../lib/cucumber-messages/cucumber/utils.hpp  | 26 -----------
 jsonschema/scripts/templates/cpp.hpp.erb      | 25 ++++++-----
 116 files changed, 1023 insertions(+), 523 deletions(-)
 delete mode 100644 cpp/include/cucumber/message.hpp
 delete mode 100644 cpp/src/lib/cucumber-messages/cucumber/message.cpp
 create mode 100644 cpp/src/lib/cucumber-messages/cucumber/messages/utils.hpp
 delete mode 100644 cpp/src/lib/cucumber-messages/cucumber/utils.hpp

diff --git a/cpp/Makefile b/cpp/Makefile
index b2f0e350..34d8cb77 100644
--- a/cpp/Makefile
+++ b/cpp/Makefile
@@ -4,7 +4,11 @@ schemas = $(shell find ../jsonschema -name "*.json")
 
 INC_DIR = include/cucumber/messages
 LIB_DIR = src/lib/cucumber-messages/cucumber/messages
-GEN_DIRS = $(INC_DIR) $(LIB_DIR)
+
+SOURCES = \
+	$(shell find $(INC_DIR) -name "*.[ch]pp") \
+	$(shell find $(LIB_DIR) -name "*.[ch]pp")
+CMAKELISTS = $(shell find . -name CMakeLists.txt)
 
 help: ## Show this help
 	@awk 'BEGIN {FS = ":.*##"; printf "\nUsage:\n  make <target>\n\nWhere <target> is one of:\n"} /^[$$()% a-zA-Z_-]+:.*?##/ { printf "  \033[36m%-15s\033[0m %s\n", $$1, $$2 } /^##@/ { printf "\n\033[1m%s\033[0m\n", substr($$0, 5) } ' $(MAKEFILE_LIST)
@@ -17,15 +21,13 @@ require: ## Check requirements for the code generation (ruby, csplit and tail ar
 	@tail --version >/dev/null 2>&1 || (echo "ERROR: tail is required."; exit 1)
 
 clean: ## Remove automatically generated files and related artifacts
-	rm -rf $(GEN_DIRS) build .configured
+	rm -rf build .configured
 
 .generate-messages: $(schemas) ../jsonschema/scripts/codegen.rb ../jsonschema/scripts/templates/cpp.hpp.erb ../jsonschema/scripts/templates/cpp.enum.hpp.erb
 	ruby ../jsonschema/scripts/codegen.rb Cpp ../jsonschema cpp.hpp.erb > Generated.hpp.tmp
 	ruby ../jsonschema/scripts/codegen.rb Cpp ../jsonschema cpp.enum.hpp.erb >> Generated.hpp.tmp
 	csplit --quiet --prefix=Generated --suffix-format=%02d.hpp.tmp --elide-empty-files Generated.hpp.tmp /^[A-Za-z_.]*[.][ch]pp/ {*}
 	rm Generated.hpp.tmp
-	rm -rf $(GEN_DIRS)
-	mkdir -p $(GEN_DIRS)
 
 	for file in Generated**; do \
 	    F=$$(head -n 1 $$file | tr -d '\r\n'); \
@@ -40,9 +42,9 @@ clean: ## Remove automatically generated files and related artifacts
 clean-build:
 	rm -rf build .configured .built
 
-.configured:
+.configured: $(CMAKELISTS)
 	mkdir -p build
 	cmake -S . -B build && touch $@
 
-.built: .configured
+.built: .configured $(SOURCES)
 	cmake --build build --parallel && touch $@
diff --git a/cpp/include/cucumber/message.hpp b/cpp/include/cucumber/message.hpp
deleted file mode 100644
index 73fc1cb8..00000000
--- a/cpp/include/cucumber/message.hpp
+++ /dev/null
@@ -1,45 +0,0 @@
-#pragma once
-
-#include <type_traits>
-#include <vector>
-#include <string>
-#include <ostream>
-
-namespace cucumber {
-
-struct message
-{
-    std::string to_string() const;
-};
-
-template <
-    typename Msg,
-    typename = std::enable_if_t<std::is_base_of_v<message, Msg>>
->
-std::ostream&
-operator<<(std::ostream& os, const Msg& msg)
-{
-    os << msg.to_string();
-
-    return os;
-}
-
-template <
-    typename Msg,
-    typename = std::enable_if_t<std::is_base_of_v<message, Msg>>
->
-std::ostream&
-operator<<(std::ostream& os, const std::vector<Msg>& msgs)
-{
-    os << '[';
-
-    for (std::size_t i = 0; i < msgs.size(); ++i) {
-        os << (i > 0 ? ", " : "") << msgs[i];
-    }
-
-    os << ']';
-
-    return os;
-}
-
-}
diff --git a/cpp/include/cucumber/messages/attachment.hpp b/cpp/include/cucumber/messages/attachment.hpp
index 9e0885c2..4e4166fa 100644
--- a/cpp/include/cucumber/messages/attachment.hpp
+++ b/cpp/include/cucumber/messages/attachment.hpp
@@ -1,8 +1,7 @@
 #pragma once
 
 #include <vector>
-
-#include <cucumber/message.hpp>
+#include <string>
 
 #include <cucumber/messages/attachment_content_encoding.hpp>
 #include <cucumber/messages/source.hpp>
@@ -27,7 +26,7 @@ namespace cucumber::messages {
 //
 // Generated code
 
-struct attachment : cucumber::message
+struct attachment
 {
     std::string body;
     cucumber::messages::attachment_content_encoding content_encoding;
@@ -41,4 +40,7 @@ struct attachment : cucumber::message
     std::string to_string() const;
 };
 
+std::ostream&
+operator<<(std::ostream& os, const attachment& msg);
+
 }
diff --git a/cpp/include/cucumber/messages/background.hpp b/cpp/include/cucumber/messages/background.hpp
index fd6c55ca..cdbd6729 100644
--- a/cpp/include/cucumber/messages/background.hpp
+++ b/cpp/include/cucumber/messages/background.hpp
@@ -1,8 +1,7 @@
 #pragma once
 
 #include <vector>
-
-#include <cucumber/message.hpp>
+#include <string>
 
 #include <cucumber/messages/location.hpp>
 #include <cucumber/messages/step.hpp>
@@ -15,7 +14,7 @@ namespace cucumber::messages {
 //
 // Generated code
 
-struct background : cucumber::message
+struct background
 {
     cucumber::messages::location location;
     std::string keyword;
@@ -27,4 +26,7 @@ struct background : cucumber::message
     std::string to_string() const;
 };
 
+std::ostream&
+operator<<(std::ostream& os, const background& msg);
+
 }
diff --git a/cpp/include/cucumber/messages/ci.hpp b/cpp/include/cucumber/messages/ci.hpp
index 8b6c3b1d..446d1741 100644
--- a/cpp/include/cucumber/messages/ci.hpp
+++ b/cpp/include/cucumber/messages/ci.hpp
@@ -1,8 +1,7 @@
 #pragma once
 
 #include <vector>
-
-#include <cucumber/message.hpp>
+#include <string>
 
 #include <cucumber/messages/git.hpp>
 
@@ -16,7 +15,7 @@ namespace cucumber::messages {
 //
 // Generated code
 
-struct ci : cucumber::message
+struct ci
 {
     std::string name;
     std::string url;
@@ -26,4 +25,7 @@ struct ci : cucumber::message
     std::string to_string() const;
 };
 
+std::ostream&
+operator<<(std::ostream& os, const ci& msg);
+
 }
diff --git a/cpp/include/cucumber/messages/comment.hpp b/cpp/include/cucumber/messages/comment.hpp
index 10ba50fd..cef7a694 100644
--- a/cpp/include/cucumber/messages/comment.hpp
+++ b/cpp/include/cucumber/messages/comment.hpp
@@ -1,8 +1,7 @@
 #pragma once
 
 #include <vector>
-
-#include <cucumber/message.hpp>
+#include <string>
 
 #include <cucumber/messages/location.hpp>
 
@@ -16,7 +15,7 @@ namespace cucumber::messages {
 //
 // Generated code
 
-struct comment : cucumber::message
+struct comment
 {
     cucumber::messages::location location;
     std::string text;
@@ -24,4 +23,7 @@ struct comment : cucumber::message
     std::string to_string() const;
 };
 
+std::ostream&
+operator<<(std::ostream& os, const comment& msg);
+
 }
diff --git a/cpp/include/cucumber/messages/data_table.hpp b/cpp/include/cucumber/messages/data_table.hpp
index 8534c1b8..192fa03c 100644
--- a/cpp/include/cucumber/messages/data_table.hpp
+++ b/cpp/include/cucumber/messages/data_table.hpp
@@ -1,8 +1,7 @@
 #pragma once
 
 #include <vector>
-
-#include <cucumber/message.hpp>
+#include <string>
 
 #include <cucumber/messages/location.hpp>
 #include <cucumber/messages/table_row.hpp>
@@ -15,7 +14,7 @@ namespace cucumber::messages {
 //
 // Generated code
 
-struct data_table : cucumber::message
+struct data_table
 {
     cucumber::messages::location location;
     std::vector<cucumber::messages::table_row> rows;
@@ -23,4 +22,7 @@ struct data_table : cucumber::message
     std::string to_string() const;
 };
 
+std::ostream&
+operator<<(std::ostream& os, const data_table& msg);
+
 }
diff --git a/cpp/include/cucumber/messages/doc_string.hpp b/cpp/include/cucumber/messages/doc_string.hpp
index ee6c3347..65df7ba5 100644
--- a/cpp/include/cucumber/messages/doc_string.hpp
+++ b/cpp/include/cucumber/messages/doc_string.hpp
@@ -1,8 +1,7 @@
 #pragma once
 
 #include <vector>
-
-#include <cucumber/message.hpp>
+#include <string>
 
 #include <cucumber/messages/location.hpp>
 
@@ -14,7 +13,7 @@ namespace cucumber::messages {
 //
 // Generated code
 
-struct doc_string : cucumber::message
+struct doc_string
 {
     cucumber::messages::location location;
     std::string media_type;
@@ -24,4 +23,7 @@ struct doc_string : cucumber::message
     std::string to_string() const;
 };
 
+std::ostream&
+operator<<(std::ostream& os, const doc_string& msg);
+
 }
diff --git a/cpp/include/cucumber/messages/duration.hpp b/cpp/include/cucumber/messages/duration.hpp
index a7c007d5..a72ba504 100644
--- a/cpp/include/cucumber/messages/duration.hpp
+++ b/cpp/include/cucumber/messages/duration.hpp
@@ -1,8 +1,7 @@
 #pragma once
 
 #include <vector>
-
-#include <cucumber/message.hpp>
+#include <string>
 
 namespace cucumber::messages {
 
@@ -15,7 +14,7 @@ namespace cucumber::messages {
 //
 // Generated code
 
-struct duration : cucumber::message
+struct duration
 {
     std::size_t seconds;
     std::size_t nanos;
@@ -23,4 +22,7 @@ struct duration : cucumber::message
     std::string to_string() const;
 };
 
+std::ostream&
+operator<<(std::ostream& os, const duration& msg);
+
 }
diff --git a/cpp/include/cucumber/messages/envelope.hpp b/cpp/include/cucumber/messages/envelope.hpp
index 15b95bd4..f96db3c9 100644
--- a/cpp/include/cucumber/messages/envelope.hpp
+++ b/cpp/include/cucumber/messages/envelope.hpp
@@ -1,8 +1,7 @@
 #pragma once
 
 #include <vector>
-
-#include <cucumber/message.hpp>
+#include <string>
 
 #include <cucumber/messages/attachment.hpp>
 #include <cucumber/messages/gherkin_document.hpp>
@@ -37,7 +36,7 @@ namespace cucumber::messages {
 //
 // Generated code
 
-struct envelope : cucumber::message
+struct envelope
 {
     cucumber::messages::attachment attachment;
     cucumber::messages::gherkin_document gherkin_document;
@@ -60,4 +59,7 @@ struct envelope : cucumber::message
     std::string to_string() const;
 };
 
+std::ostream&
+operator<<(std::ostream& os, const envelope& msg);
+
 }
diff --git a/cpp/include/cucumber/messages/examples.hpp b/cpp/include/cucumber/messages/examples.hpp
index 76830096..6dc43f66 100644
--- a/cpp/include/cucumber/messages/examples.hpp
+++ b/cpp/include/cucumber/messages/examples.hpp
@@ -1,8 +1,7 @@
 #pragma once
 
 #include <vector>
-
-#include <cucumber/message.hpp>
+#include <string>
 
 #include <cucumber/messages/location.hpp>
 #include <cucumber/messages/tag.hpp>
@@ -17,7 +16,7 @@ namespace cucumber::messages {
 //
 // Generated code
 
-struct examples : cucumber::message
+struct examples
 {
     cucumber::messages::location location;
     std::vector<cucumber::messages::tag> tags;
@@ -31,4 +30,7 @@ struct examples : cucumber::message
     std::string to_string() const;
 };
 
+std::ostream&
+operator<<(std::ostream& os, const examples& msg);
+
 }
diff --git a/cpp/include/cucumber/messages/exception.hpp b/cpp/include/cucumber/messages/exception.hpp
index 66a92b56..cf4326b6 100644
--- a/cpp/include/cucumber/messages/exception.hpp
+++ b/cpp/include/cucumber/messages/exception.hpp
@@ -1,8 +1,7 @@
 #pragma once
 
 #include <vector>
-
-#include <cucumber/message.hpp>
+#include <string>
 
 namespace cucumber::messages {
 
@@ -14,7 +13,7 @@ namespace cucumber::messages {
 //
 // Generated code
 
-struct exception : cucumber::message
+struct exception
 {
     std::string type;
     std::string message;
@@ -22,4 +21,7 @@ struct exception : cucumber::message
     std::string to_string() const;
 };
 
+std::ostream&
+operator<<(std::ostream& os, const exception& msg);
+
 }
diff --git a/cpp/include/cucumber/messages/feature.hpp b/cpp/include/cucumber/messages/feature.hpp
index 6e4400a5..a390253d 100644
--- a/cpp/include/cucumber/messages/feature.hpp
+++ b/cpp/include/cucumber/messages/feature.hpp
@@ -1,8 +1,7 @@
 #pragma once
 
 #include <vector>
-
-#include <cucumber/message.hpp>
+#include <string>
 
 #include <cucumber/messages/location.hpp>
 #include <cucumber/messages/tag.hpp>
@@ -16,7 +15,7 @@ namespace cucumber::messages {
 //
 // Generated code
 
-struct feature : cucumber::message
+struct feature
 {
     cucumber::messages::location location;
     std::vector<cucumber::messages::tag> tags;
@@ -29,4 +28,7 @@ struct feature : cucumber::message
     std::string to_string() const;
 };
 
+std::ostream&
+operator<<(std::ostream& os, const feature& msg);
+
 }
diff --git a/cpp/include/cucumber/messages/feature_child.hpp b/cpp/include/cucumber/messages/feature_child.hpp
index be45a77a..dec5e234 100644
--- a/cpp/include/cucumber/messages/feature_child.hpp
+++ b/cpp/include/cucumber/messages/feature_child.hpp
@@ -1,8 +1,7 @@
 #pragma once
 
 #include <vector>
-
-#include <cucumber/message.hpp>
+#include <string>
 
 #include <cucumber/messages/rule.hpp>
 #include <cucumber/messages/background.hpp>
@@ -18,7 +17,7 @@ namespace cucumber::messages {
 //
 // Generated code
 
-struct feature_child : cucumber::message
+struct feature_child
 {
     cucumber::messages::rule rule;
     cucumber::messages::background background;
@@ -27,4 +26,7 @@ struct feature_child : cucumber::message
     std::string to_string() const;
 };
 
+std::ostream&
+operator<<(std::ostream& os, const feature_child& msg);
+
 }
diff --git a/cpp/include/cucumber/messages/gherkin_document.hpp b/cpp/include/cucumber/messages/gherkin_document.hpp
index 9a4b1638..b8bdf050 100644
--- a/cpp/include/cucumber/messages/gherkin_document.hpp
+++ b/cpp/include/cucumber/messages/gherkin_document.hpp
@@ -1,8 +1,7 @@
 #pragma once
 
 #include <vector>
-
-#include <cucumber/message.hpp>
+#include <string>
 
 #include <cucumber/messages/feature.hpp>
 #include <cucumber/messages/comment.hpp>
@@ -22,7 +21,7 @@ namespace cucumber::messages {
 //
 // Generated code
 
-struct gherkin_document : cucumber::message
+struct gherkin_document
 {
     std::string uri;
     cucumber::messages::feature feature;
@@ -31,4 +30,7 @@ struct gherkin_document : cucumber::message
     std::string to_string() const;
 };
 
+std::ostream&
+operator<<(std::ostream& os, const gherkin_document& msg);
+
 }
diff --git a/cpp/include/cucumber/messages/git.hpp b/cpp/include/cucumber/messages/git.hpp
index 0f589277..4de134b6 100644
--- a/cpp/include/cucumber/messages/git.hpp
+++ b/cpp/include/cucumber/messages/git.hpp
@@ -1,8 +1,7 @@
 #pragma once
 
 #include <vector>
-
-#include <cucumber/message.hpp>
+#include <string>
 
 namespace cucumber::messages {
 
@@ -15,7 +14,7 @@ namespace cucumber::messages {
 //
 // Generated code
 
-struct git : cucumber::message
+struct git
 {
     std::string remote;
     std::string revision;
@@ -25,4 +24,7 @@ struct git : cucumber::message
     std::string to_string() const;
 };
 
+std::ostream&
+operator<<(std::ostream& os, const git& msg);
+
 }
diff --git a/cpp/include/cucumber/messages/group.hpp b/cpp/include/cucumber/messages/group.hpp
index a3a8efd5..bc971faa 100644
--- a/cpp/include/cucumber/messages/group.hpp
+++ b/cpp/include/cucumber/messages/group.hpp
@@ -1,8 +1,7 @@
 #pragma once
 
 #include <vector>
-
-#include <cucumber/message.hpp>
+#include <string>
 
 #include <cucumber/messages/group.hpp>
 
@@ -14,7 +13,7 @@ namespace cucumber::messages {
 //
 // Generated code
 
-struct group : cucumber::message
+struct group
 {
     std::vector<cucumber::messages::group> children;
     std::size_t start;
@@ -23,4 +22,7 @@ struct group : cucumber::message
     std::string to_string() const;
 };
 
+std::ostream&
+operator<<(std::ostream& os, const group& msg);
+
 }
diff --git a/cpp/include/cucumber/messages/hook.hpp b/cpp/include/cucumber/messages/hook.hpp
index 18189272..4f1fad10 100644
--- a/cpp/include/cucumber/messages/hook.hpp
+++ b/cpp/include/cucumber/messages/hook.hpp
@@ -1,8 +1,7 @@
 #pragma once
 
 #include <vector>
-
-#include <cucumber/message.hpp>
+#include <string>
 
 #include <cucumber/messages/source_reference.hpp>
 
@@ -14,7 +13,7 @@ namespace cucumber::messages {
 //
 // Generated code
 
-struct hook : cucumber::message
+struct hook
 {
     std::string id;
     std::string name;
@@ -24,4 +23,7 @@ struct hook : cucumber::message
     std::string to_string() const;
 };
 
+std::ostream&
+operator<<(std::ostream& os, const hook& msg);
+
 }
diff --git a/cpp/include/cucumber/messages/java_method.hpp b/cpp/include/cucumber/messages/java_method.hpp
index 4d5316ba..acf03c8a 100644
--- a/cpp/include/cucumber/messages/java_method.hpp
+++ b/cpp/include/cucumber/messages/java_method.hpp
@@ -1,8 +1,7 @@
 #pragma once
 
 #include <vector>
-
-#include <cucumber/message.hpp>
+#include <string>
 
 namespace cucumber::messages {
 
@@ -12,7 +11,7 @@ namespace cucumber::messages {
 //
 // Generated code
 
-struct java_method : cucumber::message
+struct java_method
 {
     std::string class_name;
     std::string method_name;
@@ -21,4 +20,7 @@ struct java_method : cucumber::message
     std::string to_string() const;
 };
 
+std::ostream&
+operator<<(std::ostream& os, const java_method& msg);
+
 }
diff --git a/cpp/include/cucumber/messages/java_stack_trace_element.hpp b/cpp/include/cucumber/messages/java_stack_trace_element.hpp
index 6ae53794..7f3104c3 100644
--- a/cpp/include/cucumber/messages/java_stack_trace_element.hpp
+++ b/cpp/include/cucumber/messages/java_stack_trace_element.hpp
@@ -1,8 +1,7 @@
 #pragma once
 
 #include <vector>
-
-#include <cucumber/message.hpp>
+#include <string>
 
 namespace cucumber::messages {
 
@@ -12,7 +11,7 @@ namespace cucumber::messages {
 //
 // Generated code
 
-struct java_stack_trace_element : cucumber::message
+struct java_stack_trace_element
 {
     std::string class_name;
     std::string file_name;
@@ -21,4 +20,7 @@ struct java_stack_trace_element : cucumber::message
     std::string to_string() const;
 };
 
+std::ostream&
+operator<<(std::ostream& os, const java_stack_trace_element& msg);
+
 }
diff --git a/cpp/include/cucumber/messages/location.hpp b/cpp/include/cucumber/messages/location.hpp
index 54f4835e..4221bf0d 100644
--- a/cpp/include/cucumber/messages/location.hpp
+++ b/cpp/include/cucumber/messages/location.hpp
@@ -1,8 +1,7 @@
 #pragma once
 
 #include <vector>
-
-#include <cucumber/message.hpp>
+#include <string>
 
 namespace cucumber::messages {
 
@@ -14,7 +13,7 @@ namespace cucumber::messages {
 //
 // Generated code
 
-struct location : cucumber::message
+struct location
 {
     std::size_t line;
     std::size_t column;
@@ -22,4 +21,7 @@ struct location : cucumber::message
     std::string to_string() const;
 };
 
+std::ostream&
+operator<<(std::ostream& os, const location& msg);
+
 }
diff --git a/cpp/include/cucumber/messages/meta.hpp b/cpp/include/cucumber/messages/meta.hpp
index a4e5ce10..1afa05bf 100644
--- a/cpp/include/cucumber/messages/meta.hpp
+++ b/cpp/include/cucumber/messages/meta.hpp
@@ -1,8 +1,7 @@
 #pragma once
 
 #include <vector>
-
-#include <cucumber/message.hpp>
+#include <string>
 
 #include <cucumber/messages/product.hpp>
 #include <cucumber/messages/product.hpp>
@@ -21,7 +20,7 @@ namespace cucumber::messages {
 //
 // Generated code
 
-struct meta : cucumber::message
+struct meta
 {
     std::string protocol_version;
     cucumber::messages::product implementation;
@@ -33,4 +32,7 @@ struct meta : cucumber::message
     std::string to_string() const;
 };
 
+std::ostream&
+operator<<(std::ostream& os, const meta& msg);
+
 }
diff --git a/cpp/include/cucumber/messages/parameter_type.hpp b/cpp/include/cucumber/messages/parameter_type.hpp
index fe1af92c..1a16e57e 100644
--- a/cpp/include/cucumber/messages/parameter_type.hpp
+++ b/cpp/include/cucumber/messages/parameter_type.hpp
@@ -1,8 +1,7 @@
 #pragma once
 
 #include <vector>
-
-#include <cucumber/message.hpp>
+#include <string>
 
 #include <cucumber/messages/source_reference.hpp>
 
@@ -14,7 +13,7 @@ namespace cucumber::messages {
 //
 // Generated code
 
-struct parameter_type : cucumber::message
+struct parameter_type
 {
     std::string name;
     std::vector<std::string> regular_expressions;
@@ -26,4 +25,7 @@ struct parameter_type : cucumber::message
     std::string to_string() const;
 };
 
+std::ostream&
+operator<<(std::ostream& os, const parameter_type& msg);
+
 }
diff --git a/cpp/include/cucumber/messages/parse_error.hpp b/cpp/include/cucumber/messages/parse_error.hpp
index df0a176b..01949b73 100644
--- a/cpp/include/cucumber/messages/parse_error.hpp
+++ b/cpp/include/cucumber/messages/parse_error.hpp
@@ -1,8 +1,7 @@
 #pragma once
 
 #include <vector>
-
-#include <cucumber/message.hpp>
+#include <string>
 
 #include <cucumber/messages/source_reference.hpp>
 
@@ -14,7 +13,7 @@ namespace cucumber::messages {
 //
 // Generated code
 
-struct parse_error : cucumber::message
+struct parse_error
 {
     cucumber::messages::source_reference source;
     std::string message;
@@ -22,4 +21,7 @@ struct parse_error : cucumber::message
     std::string to_string() const;
 };
 
+std::ostream&
+operator<<(std::ostream& os, const parse_error& msg);
+
 }
diff --git a/cpp/include/cucumber/messages/pickle.hpp b/cpp/include/cucumber/messages/pickle.hpp
index aa37a256..46fdf7ff 100644
--- a/cpp/include/cucumber/messages/pickle.hpp
+++ b/cpp/include/cucumber/messages/pickle.hpp
@@ -1,8 +1,7 @@
 #pragma once
 
 #include <vector>
-
-#include <cucumber/message.hpp>
+#include <string>
 
 #include <cucumber/messages/pickle_step.hpp>
 #include <cucumber/messages/pickle_tag.hpp>
@@ -28,7 +27,7 @@ namespace cucumber::messages {
 //
 // Generated code
 
-struct pickle : cucumber::message
+struct pickle
 {
     std::string id;
     std::string uri;
@@ -41,4 +40,7 @@ struct pickle : cucumber::message
     std::string to_string() const;
 };
 
+std::ostream&
+operator<<(std::ostream& os, const pickle& msg);
+
 }
diff --git a/cpp/include/cucumber/messages/pickle_doc_string.hpp b/cpp/include/cucumber/messages/pickle_doc_string.hpp
index 658e3f48..fe474f3e 100644
--- a/cpp/include/cucumber/messages/pickle_doc_string.hpp
+++ b/cpp/include/cucumber/messages/pickle_doc_string.hpp
@@ -1,8 +1,7 @@
 #pragma once
 
 #include <vector>
-
-#include <cucumber/message.hpp>
+#include <string>
 
 namespace cucumber::messages {
 
@@ -12,7 +11,7 @@ namespace cucumber::messages {
 //
 // Generated code
 
-struct pickle_doc_string : cucumber::message
+struct pickle_doc_string
 {
     std::string media_type;
     std::string content;
@@ -20,4 +19,7 @@ struct pickle_doc_string : cucumber::message
     std::string to_string() const;
 };
 
+std::ostream&
+operator<<(std::ostream& os, const pickle_doc_string& msg);
+
 }
diff --git a/cpp/include/cucumber/messages/pickle_step.hpp b/cpp/include/cucumber/messages/pickle_step.hpp
index de4879ed..33d117b1 100644
--- a/cpp/include/cucumber/messages/pickle_step.hpp
+++ b/cpp/include/cucumber/messages/pickle_step.hpp
@@ -1,8 +1,7 @@
 #pragma once
 
 #include <vector>
-
-#include <cucumber/message.hpp>
+#include <string>
 
 #include <cucumber/messages/pickle_step_argument.hpp>
 #include <cucumber/messages/pickle_step_type.hpp>
@@ -17,7 +16,7 @@ namespace cucumber::messages {
 //
 // Generated code
 
-struct pickle_step : cucumber::message
+struct pickle_step
 {
     cucumber::messages::pickle_step_argument argument;
     std::vector<std::string> ast_node_ids;
@@ -28,4 +27,7 @@ struct pickle_step : cucumber::message
     std::string to_string() const;
 };
 
+std::ostream&
+operator<<(std::ostream& os, const pickle_step& msg);
+
 }
diff --git a/cpp/include/cucumber/messages/pickle_step_argument.hpp b/cpp/include/cucumber/messages/pickle_step_argument.hpp
index 7b988e2a..6f59690b 100644
--- a/cpp/include/cucumber/messages/pickle_step_argument.hpp
+++ b/cpp/include/cucumber/messages/pickle_step_argument.hpp
@@ -1,8 +1,7 @@
 #pragma once
 
 #include <vector>
-
-#include <cucumber/message.hpp>
+#include <string>
 
 #include <cucumber/messages/pickle_doc_string.hpp>
 #include <cucumber/messages/pickle_table.hpp>
@@ -17,7 +16,7 @@ namespace cucumber::messages {
 //
 // Generated code
 
-struct pickle_step_argument : cucumber::message
+struct pickle_step_argument
 {
     cucumber::messages::pickle_doc_string doc_string;
     cucumber::messages::pickle_table data_table;
@@ -25,4 +24,7 @@ struct pickle_step_argument : cucumber::message
     std::string to_string() const;
 };
 
+std::ostream&
+operator<<(std::ostream& os, const pickle_step_argument& msg);
+
 }
diff --git a/cpp/include/cucumber/messages/pickle_table.hpp b/cpp/include/cucumber/messages/pickle_table.hpp
index 0166bd15..5dee89e2 100644
--- a/cpp/include/cucumber/messages/pickle_table.hpp
+++ b/cpp/include/cucumber/messages/pickle_table.hpp
@@ -1,8 +1,7 @@
 #pragma once
 
 #include <vector>
-
-#include <cucumber/message.hpp>
+#include <string>
 
 #include <cucumber/messages/pickle_table_row.hpp>
 
@@ -14,11 +13,14 @@ namespace cucumber::messages {
 //
 // Generated code
 
-struct pickle_table : cucumber::message
+struct pickle_table
 {
     std::vector<cucumber::messages::pickle_table_row> rows;
 
     std::string to_string() const;
 };
 
+std::ostream&
+operator<<(std::ostream& os, const pickle_table& msg);
+
 }
diff --git a/cpp/include/cucumber/messages/pickle_table_cell.hpp b/cpp/include/cucumber/messages/pickle_table_cell.hpp
index 5a2a57e2..c26e2c3d 100644
--- a/cpp/include/cucumber/messages/pickle_table_cell.hpp
+++ b/cpp/include/cucumber/messages/pickle_table_cell.hpp
@@ -1,8 +1,7 @@
 #pragma once
 
 #include <vector>
-
-#include <cucumber/message.hpp>
+#include <string>
 
 namespace cucumber::messages {
 
@@ -12,11 +11,14 @@ namespace cucumber::messages {
 //
 // Generated code
 
-struct pickle_table_cell : cucumber::message
+struct pickle_table_cell
 {
     std::string value;
 
     std::string to_string() const;
 };
 
+std::ostream&
+operator<<(std::ostream& os, const pickle_table_cell& msg);
+
 }
diff --git a/cpp/include/cucumber/messages/pickle_table_row.hpp b/cpp/include/cucumber/messages/pickle_table_row.hpp
index fa2c0636..5942bfae 100644
--- a/cpp/include/cucumber/messages/pickle_table_row.hpp
+++ b/cpp/include/cucumber/messages/pickle_table_row.hpp
@@ -1,8 +1,7 @@
 #pragma once
 
 #include <vector>
-
-#include <cucumber/message.hpp>
+#include <string>
 
 #include <cucumber/messages/pickle_table_cell.hpp>
 
@@ -14,11 +13,14 @@ namespace cucumber::messages {
 //
 // Generated code
 
-struct pickle_table_row : cucumber::message
+struct pickle_table_row
 {
     std::vector<cucumber::messages::pickle_table_cell> cells;
 
     std::string to_string() const;
 };
 
+std::ostream&
+operator<<(std::ostream& os, const pickle_table_row& msg);
+
 }
diff --git a/cpp/include/cucumber/messages/pickle_tag.hpp b/cpp/include/cucumber/messages/pickle_tag.hpp
index 1e961ede..355c4cb7 100644
--- a/cpp/include/cucumber/messages/pickle_tag.hpp
+++ b/cpp/include/cucumber/messages/pickle_tag.hpp
@@ -1,8 +1,7 @@
 #pragma once
 
 #include <vector>
-
-#include <cucumber/message.hpp>
+#include <string>
 
 namespace cucumber::messages {
 
@@ -14,7 +13,7 @@ namespace cucumber::messages {
 //
 // Generated code
 
-struct pickle_tag : cucumber::message
+struct pickle_tag
 {
     std::string name;
     std::string ast_node_id;
@@ -22,4 +21,7 @@ struct pickle_tag : cucumber::message
     std::string to_string() const;
 };
 
+std::ostream&
+operator<<(std::ostream& os, const pickle_tag& msg);
+
 }
diff --git a/cpp/include/cucumber/messages/product.hpp b/cpp/include/cucumber/messages/product.hpp
index a25035a8..c5a90bfa 100644
--- a/cpp/include/cucumber/messages/product.hpp
+++ b/cpp/include/cucumber/messages/product.hpp
@@ -1,8 +1,7 @@
 #pragma once
 
 #include <vector>
-
-#include <cucumber/message.hpp>
+#include <string>
 
 namespace cucumber::messages {
 
@@ -14,7 +13,7 @@ namespace cucumber::messages {
 //
 // Generated code
 
-struct product : cucumber::message
+struct product
 {
     std::string name;
     std::string version;
@@ -22,4 +21,7 @@ struct product : cucumber::message
     std::string to_string() const;
 };
 
+std::ostream&
+operator<<(std::ostream& os, const product& msg);
+
 }
diff --git a/cpp/include/cucumber/messages/rule.hpp b/cpp/include/cucumber/messages/rule.hpp
index 399fc2c1..8675de74 100644
--- a/cpp/include/cucumber/messages/rule.hpp
+++ b/cpp/include/cucumber/messages/rule.hpp
@@ -1,8 +1,7 @@
 #pragma once
 
 #include <vector>
-
-#include <cucumber/message.hpp>
+#include <string>
 
 #include <cucumber/messages/location.hpp>
 #include <cucumber/messages/tag.hpp>
@@ -16,7 +15,7 @@ namespace cucumber::messages {
 //
 // Generated code
 
-struct rule : cucumber::message
+struct rule
 {
     cucumber::messages::location location;
     std::vector<cucumber::messages::tag> tags;
@@ -29,4 +28,7 @@ struct rule : cucumber::message
     std::string to_string() const;
 };
 
+std::ostream&
+operator<<(std::ostream& os, const rule& msg);
+
 }
diff --git a/cpp/include/cucumber/messages/rule_child.hpp b/cpp/include/cucumber/messages/rule_child.hpp
index e1214220..3d90a2db 100644
--- a/cpp/include/cucumber/messages/rule_child.hpp
+++ b/cpp/include/cucumber/messages/rule_child.hpp
@@ -1,8 +1,7 @@
 #pragma once
 
 #include <vector>
-
-#include <cucumber/message.hpp>
+#include <string>
 
 #include <cucumber/messages/background.hpp>
 #include <cucumber/messages/scenario.hpp>
@@ -17,7 +16,7 @@ namespace cucumber::messages {
 //
 // Generated code
 
-struct rule_child : cucumber::message
+struct rule_child
 {
     cucumber::messages::background background;
     cucumber::messages::scenario scenario;
@@ -25,4 +24,7 @@ struct rule_child : cucumber::message
     std::string to_string() const;
 };
 
+std::ostream&
+operator<<(std::ostream& os, const rule_child& msg);
+
 }
diff --git a/cpp/include/cucumber/messages/scenario.hpp b/cpp/include/cucumber/messages/scenario.hpp
index 2f2dd2ac..62e5c489 100644
--- a/cpp/include/cucumber/messages/scenario.hpp
+++ b/cpp/include/cucumber/messages/scenario.hpp
@@ -1,8 +1,7 @@
 #pragma once
 
 #include <vector>
-
-#include <cucumber/message.hpp>
+#include <string>
 
 #include <cucumber/messages/location.hpp>
 #include <cucumber/messages/tag.hpp>
@@ -17,7 +16,7 @@ namespace cucumber::messages {
 //
 // Generated code
 
-struct scenario : cucumber::message
+struct scenario
 {
     cucumber::messages::location location;
     std::vector<cucumber::messages::tag> tags;
@@ -31,4 +30,7 @@ struct scenario : cucumber::message
     std::string to_string() const;
 };
 
+std::ostream&
+operator<<(std::ostream& os, const scenario& msg);
+
 }
diff --git a/cpp/include/cucumber/messages/source.hpp b/cpp/include/cucumber/messages/source.hpp
index f312cdf6..30f9e786 100644
--- a/cpp/include/cucumber/messages/source.hpp
+++ b/cpp/include/cucumber/messages/source.hpp
@@ -1,8 +1,7 @@
 #pragma once
 
 #include <vector>
-
-#include <cucumber/message.hpp>
+#include <string>
 
 #include <cucumber/messages/source_media_type.hpp>
 
@@ -18,7 +17,7 @@ namespace cucumber::messages {
 //
 // Generated code
 
-struct source : cucumber::message
+struct source
 {
     std::string uri;
     std::string data;
@@ -27,4 +26,7 @@ struct source : cucumber::message
     std::string to_string() const;
 };
 
+std::ostream&
+operator<<(std::ostream& os, const source& msg);
+
 }
diff --git a/cpp/include/cucumber/messages/source_reference.hpp b/cpp/include/cucumber/messages/source_reference.hpp
index ddf8d736..46366bdb 100644
--- a/cpp/include/cucumber/messages/source_reference.hpp
+++ b/cpp/include/cucumber/messages/source_reference.hpp
@@ -1,8 +1,7 @@
 #pragma once
 
 #include <vector>
-
-#include <cucumber/message.hpp>
+#include <string>
 
 #include <cucumber/messages/java_method.hpp>
 #include <cucumber/messages/java_stack_trace_element.hpp>
@@ -19,7 +18,7 @@ namespace cucumber::messages {
 //
 // Generated code
 
-struct source_reference : cucumber::message
+struct source_reference
 {
     std::string uri;
     cucumber::messages::java_method java_method;
@@ -29,4 +28,7 @@ struct source_reference : cucumber::message
     std::string to_string() const;
 };
 
+std::ostream&
+operator<<(std::ostream& os, const source_reference& msg);
+
 }
diff --git a/cpp/include/cucumber/messages/step.hpp b/cpp/include/cucumber/messages/step.hpp
index 3a5ec69d..9f37c874 100644
--- a/cpp/include/cucumber/messages/step.hpp
+++ b/cpp/include/cucumber/messages/step.hpp
@@ -1,8 +1,7 @@
 #pragma once
 
 #include <vector>
-
-#include <cucumber/message.hpp>
+#include <string>
 
 #include <cucumber/messages/location.hpp>
 #include <cucumber/messages/step_keyword_type.hpp>
@@ -19,7 +18,7 @@ namespace cucumber::messages {
 //
 // Generated code
 
-struct step : cucumber::message
+struct step
 {
     cucumber::messages::location location;
     std::string keyword;
@@ -32,4 +31,7 @@ struct step : cucumber::message
     std::string to_string() const;
 };
 
+std::ostream&
+operator<<(std::ostream& os, const step& msg);
+
 }
diff --git a/cpp/include/cucumber/messages/step_definition.hpp b/cpp/include/cucumber/messages/step_definition.hpp
index 87b3b96c..49922e33 100644
--- a/cpp/include/cucumber/messages/step_definition.hpp
+++ b/cpp/include/cucumber/messages/step_definition.hpp
@@ -1,8 +1,7 @@
 #pragma once
 
 #include <vector>
-
-#include <cucumber/message.hpp>
+#include <string>
 
 #include <cucumber/messages/step_definition_pattern.hpp>
 #include <cucumber/messages/source_reference.hpp>
@@ -15,7 +14,7 @@ namespace cucumber::messages {
 //
 // Generated code
 
-struct step_definition : cucumber::message
+struct step_definition
 {
     std::string id;
     cucumber::messages::step_definition_pattern pattern;
@@ -24,4 +23,7 @@ struct step_definition : cucumber::message
     std::string to_string() const;
 };
 
+std::ostream&
+operator<<(std::ostream& os, const step_definition& msg);
+
 }
diff --git a/cpp/include/cucumber/messages/step_definition_pattern.hpp b/cpp/include/cucumber/messages/step_definition_pattern.hpp
index e14e5d26..cbb39b24 100644
--- a/cpp/include/cucumber/messages/step_definition_pattern.hpp
+++ b/cpp/include/cucumber/messages/step_definition_pattern.hpp
@@ -1,8 +1,7 @@
 #pragma once
 
 #include <vector>
-
-#include <cucumber/message.hpp>
+#include <string>
 
 #include <cucumber/messages/step_definition_pattern_type.hpp>
 
@@ -14,7 +13,7 @@ namespace cucumber::messages {
 //
 // Generated code
 
-struct step_definition_pattern : cucumber::message
+struct step_definition_pattern
 {
     std::string source;
     cucumber::messages::step_definition_pattern_type type;
@@ -22,4 +21,7 @@ struct step_definition_pattern : cucumber::message
     std::string to_string() const;
 };
 
+std::ostream&
+operator<<(std::ostream& os, const step_definition_pattern& msg);
+
 }
diff --git a/cpp/include/cucumber/messages/step_match_argument.hpp b/cpp/include/cucumber/messages/step_match_argument.hpp
index c03bd9e9..d4c06da4 100644
--- a/cpp/include/cucumber/messages/step_match_argument.hpp
+++ b/cpp/include/cucumber/messages/step_match_argument.hpp
@@ -1,8 +1,7 @@
 #pragma once
 
 #include <vector>
-
-#include <cucumber/message.hpp>
+#include <string>
 
 #include <cucumber/messages/group.hpp>
 
@@ -21,7 +20,7 @@ namespace cucumber::messages {
 //
 // Generated code
 
-struct step_match_argument : cucumber::message
+struct step_match_argument
 {
     cucumber::messages::group group;
     std::string parameter_type_name;
@@ -29,4 +28,7 @@ struct step_match_argument : cucumber::message
     std::string to_string() const;
 };
 
+std::ostream&
+operator<<(std::ostream& os, const step_match_argument& msg);
+
 }
diff --git a/cpp/include/cucumber/messages/step_match_arguments_list.hpp b/cpp/include/cucumber/messages/step_match_arguments_list.hpp
index aa4a9316..19965e5a 100644
--- a/cpp/include/cucumber/messages/step_match_arguments_list.hpp
+++ b/cpp/include/cucumber/messages/step_match_arguments_list.hpp
@@ -1,8 +1,7 @@
 #pragma once
 
 #include <vector>
-
-#include <cucumber/message.hpp>
+#include <string>
 
 #include <cucumber/messages/step_match_argument.hpp>
 
@@ -14,11 +13,14 @@ namespace cucumber::messages {
 //
 // Generated code
 
-struct step_match_arguments_list : cucumber::message
+struct step_match_arguments_list
 {
     std::vector<cucumber::messages::step_match_argument> step_match_arguments;
 
     std::string to_string() const;
 };
 
+std::ostream&
+operator<<(std::ostream& os, const step_match_arguments_list& msg);
+
 }
diff --git a/cpp/include/cucumber/messages/table_cell.hpp b/cpp/include/cucumber/messages/table_cell.hpp
index 664fb288..e22fa77c 100644
--- a/cpp/include/cucumber/messages/table_cell.hpp
+++ b/cpp/include/cucumber/messages/table_cell.hpp
@@ -1,8 +1,7 @@
 #pragma once
 
 #include <vector>
-
-#include <cucumber/message.hpp>
+#include <string>
 
 #include <cucumber/messages/location.hpp>
 
@@ -16,7 +15,7 @@ namespace cucumber::messages {
 //
 // Generated code
 
-struct table_cell : cucumber::message
+struct table_cell
 {
     cucumber::messages::location location;
     std::string value;
@@ -24,4 +23,7 @@ struct table_cell : cucumber::message
     std::string to_string() const;
 };
 
+std::ostream&
+operator<<(std::ostream& os, const table_cell& msg);
+
 }
diff --git a/cpp/include/cucumber/messages/table_row.hpp b/cpp/include/cucumber/messages/table_row.hpp
index 4ea9b94d..4b79f7e8 100644
--- a/cpp/include/cucumber/messages/table_row.hpp
+++ b/cpp/include/cucumber/messages/table_row.hpp
@@ -1,8 +1,7 @@
 #pragma once
 
 #include <vector>
-
-#include <cucumber/message.hpp>
+#include <string>
 
 #include <cucumber/messages/location.hpp>
 #include <cucumber/messages/table_cell.hpp>
@@ -17,7 +16,7 @@ namespace cucumber::messages {
 //
 // Generated code
 
-struct table_row : cucumber::message
+struct table_row
 {
     cucumber::messages::location location;
     std::vector<cucumber::messages::table_cell> cells;
@@ -26,4 +25,7 @@ struct table_row : cucumber::message
     std::string to_string() const;
 };
 
+std::ostream&
+operator<<(std::ostream& os, const table_row& msg);
+
 }
diff --git a/cpp/include/cucumber/messages/tag.hpp b/cpp/include/cucumber/messages/tag.hpp
index a85bf370..aa880cf6 100644
--- a/cpp/include/cucumber/messages/tag.hpp
+++ b/cpp/include/cucumber/messages/tag.hpp
@@ -1,8 +1,7 @@
 #pragma once
 
 #include <vector>
-
-#include <cucumber/message.hpp>
+#include <string>
 
 #include <cucumber/messages/location.hpp>
 
@@ -16,7 +15,7 @@ namespace cucumber::messages {
 //
 // Generated code
 
-struct tag : cucumber::message
+struct tag
 {
     cucumber::messages::location location;
     std::string name;
@@ -25,4 +24,7 @@ struct tag : cucumber::message
     std::string to_string() const;
 };
 
+std::ostream&
+operator<<(std::ostream& os, const tag& msg);
+
 }
diff --git a/cpp/include/cucumber/messages/test_case.hpp b/cpp/include/cucumber/messages/test_case.hpp
index 6e150da8..732d884f 100644
--- a/cpp/include/cucumber/messages/test_case.hpp
+++ b/cpp/include/cucumber/messages/test_case.hpp
@@ -1,8 +1,7 @@
 #pragma once
 
 #include <vector>
-
-#include <cucumber/message.hpp>
+#include <string>
 
 #include <cucumber/messages/test_step.hpp>
 
@@ -18,7 +17,7 @@ namespace cucumber::messages {
 //
 // Generated code
 
-struct test_case : cucumber::message
+struct test_case
 {
     std::string id;
     std::string pickle_id;
@@ -27,4 +26,7 @@ struct test_case : cucumber::message
     std::string to_string() const;
 };
 
+std::ostream&
+operator<<(std::ostream& os, const test_case& msg);
+
 }
diff --git a/cpp/include/cucumber/messages/test_case_finished.hpp b/cpp/include/cucumber/messages/test_case_finished.hpp
index 6285fdab..934f49c3 100644
--- a/cpp/include/cucumber/messages/test_case_finished.hpp
+++ b/cpp/include/cucumber/messages/test_case_finished.hpp
@@ -1,8 +1,7 @@
 #pragma once
 
 #include <vector>
-
-#include <cucumber/message.hpp>
+#include <string>
 
 #include <cucumber/messages/timestamp.hpp>
 
@@ -14,7 +13,7 @@ namespace cucumber::messages {
 //
 // Generated code
 
-struct test_case_finished : cucumber::message
+struct test_case_finished
 {
     std::string test_case_started_id;
     cucumber::messages::timestamp timestamp;
@@ -23,4 +22,7 @@ struct test_case_finished : cucumber::message
     std::string to_string() const;
 };
 
+std::ostream&
+operator<<(std::ostream& os, const test_case_finished& msg);
+
 }
diff --git a/cpp/include/cucumber/messages/test_case_started.hpp b/cpp/include/cucumber/messages/test_case_started.hpp
index deb6012b..f5116942 100644
--- a/cpp/include/cucumber/messages/test_case_started.hpp
+++ b/cpp/include/cucumber/messages/test_case_started.hpp
@@ -1,8 +1,7 @@
 #pragma once
 
 #include <vector>
-
-#include <cucumber/message.hpp>
+#include <string>
 
 #include <cucumber/messages/timestamp.hpp>
 
@@ -14,7 +13,7 @@ namespace cucumber::messages {
 //
 // Generated code
 
-struct test_case_started : cucumber::message
+struct test_case_started
 {
     std::size_t attempt;
     std::string id;
@@ -25,4 +24,7 @@ struct test_case_started : cucumber::message
     std::string to_string() const;
 };
 
+std::ostream&
+operator<<(std::ostream& os, const test_case_started& msg);
+
 }
diff --git a/cpp/include/cucumber/messages/test_run_finished.hpp b/cpp/include/cucumber/messages/test_run_finished.hpp
index f8e11360..857e8edf 100644
--- a/cpp/include/cucumber/messages/test_run_finished.hpp
+++ b/cpp/include/cucumber/messages/test_run_finished.hpp
@@ -1,8 +1,7 @@
 #pragma once
 
 #include <vector>
-
-#include <cucumber/message.hpp>
+#include <string>
 
 #include <cucumber/messages/timestamp.hpp>
 #include <cucumber/messages/exception.hpp>
@@ -15,7 +14,7 @@ namespace cucumber::messages {
 //
 // Generated code
 
-struct test_run_finished : cucumber::message
+struct test_run_finished
 {
     std::string message;
     bool success;
@@ -25,4 +24,7 @@ struct test_run_finished : cucumber::message
     std::string to_string() const;
 };
 
+std::ostream&
+operator<<(std::ostream& os, const test_run_finished& msg);
+
 }
diff --git a/cpp/include/cucumber/messages/test_run_started.hpp b/cpp/include/cucumber/messages/test_run_started.hpp
index 6195cae0..66850a69 100644
--- a/cpp/include/cucumber/messages/test_run_started.hpp
+++ b/cpp/include/cucumber/messages/test_run_started.hpp
@@ -1,8 +1,7 @@
 #pragma once
 
 #include <vector>
-
-#include <cucumber/message.hpp>
+#include <string>
 
 #include <cucumber/messages/timestamp.hpp>
 
@@ -14,11 +13,14 @@ namespace cucumber::messages {
 //
 // Generated code
 
-struct test_run_started : cucumber::message
+struct test_run_started
 {
     cucumber::messages::timestamp timestamp;
 
     std::string to_string() const;
 };
 
+std::ostream&
+operator<<(std::ostream& os, const test_run_started& msg);
+
 }
diff --git a/cpp/include/cucumber/messages/test_step.hpp b/cpp/include/cucumber/messages/test_step.hpp
index 027dbfc3..d8e83469 100644
--- a/cpp/include/cucumber/messages/test_step.hpp
+++ b/cpp/include/cucumber/messages/test_step.hpp
@@ -1,8 +1,7 @@
 #pragma once
 
 #include <vector>
-
-#include <cucumber/message.hpp>
+#include <string>
 
 #include <cucumber/messages/step_match_arguments_list.hpp>
 
@@ -17,7 +16,7 @@ namespace cucumber::messages {
 //
 // Generated code
 
-struct test_step : cucumber::message
+struct test_step
 {
     std::string hook_id;
     std::string id;
@@ -28,4 +27,7 @@ struct test_step : cucumber::message
     std::string to_string() const;
 };
 
+std::ostream&
+operator<<(std::ostream& os, const test_step& msg);
+
 }
diff --git a/cpp/include/cucumber/messages/test_step_finished.hpp b/cpp/include/cucumber/messages/test_step_finished.hpp
index 9934d92a..30619dad 100644
--- a/cpp/include/cucumber/messages/test_step_finished.hpp
+++ b/cpp/include/cucumber/messages/test_step_finished.hpp
@@ -1,8 +1,7 @@
 #pragma once
 
 #include <vector>
-
-#include <cucumber/message.hpp>
+#include <string>
 
 #include <cucumber/messages/test_step_result.hpp>
 #include <cucumber/messages/timestamp.hpp>
@@ -15,7 +14,7 @@ namespace cucumber::messages {
 //
 // Generated code
 
-struct test_step_finished : cucumber::message
+struct test_step_finished
 {
     std::string test_case_started_id;
     std::string test_step_id;
@@ -25,4 +24,7 @@ struct test_step_finished : cucumber::message
     std::string to_string() const;
 };
 
+std::ostream&
+operator<<(std::ostream& os, const test_step_finished& msg);
+
 }
diff --git a/cpp/include/cucumber/messages/test_step_result.hpp b/cpp/include/cucumber/messages/test_step_result.hpp
index c647d48f..c80e9752 100644
--- a/cpp/include/cucumber/messages/test_step_result.hpp
+++ b/cpp/include/cucumber/messages/test_step_result.hpp
@@ -1,8 +1,7 @@
 #pragma once
 
 #include <vector>
-
-#include <cucumber/message.hpp>
+#include <string>
 
 #include <cucumber/messages/duration.hpp>
 #include <cucumber/messages/test_step_result_status.hpp>
@@ -16,7 +15,7 @@ namespace cucumber::messages {
 //
 // Generated code
 
-struct test_step_result : cucumber::message
+struct test_step_result
 {
     cucumber::messages::duration duration;
     std::string message;
@@ -26,4 +25,7 @@ struct test_step_result : cucumber::message
     std::string to_string() const;
 };
 
+std::ostream&
+operator<<(std::ostream& os, const test_step_result& msg);
+
 }
diff --git a/cpp/include/cucumber/messages/test_step_started.hpp b/cpp/include/cucumber/messages/test_step_started.hpp
index 7c427217..428c0b8d 100644
--- a/cpp/include/cucumber/messages/test_step_started.hpp
+++ b/cpp/include/cucumber/messages/test_step_started.hpp
@@ -1,8 +1,7 @@
 #pragma once
 
 #include <vector>
-
-#include <cucumber/message.hpp>
+#include <string>
 
 #include <cucumber/messages/timestamp.hpp>
 
@@ -14,7 +13,7 @@ namespace cucumber::messages {
 //
 // Generated code
 
-struct test_step_started : cucumber::message
+struct test_step_started
 {
     std::string test_case_started_id;
     std::string test_step_id;
@@ -23,4 +22,7 @@ struct test_step_started : cucumber::message
     std::string to_string() const;
 };
 
+std::ostream&
+operator<<(std::ostream& os, const test_step_started& msg);
+
 }
diff --git a/cpp/include/cucumber/messages/timestamp.hpp b/cpp/include/cucumber/messages/timestamp.hpp
index 77440fa9..f2796e96 100644
--- a/cpp/include/cucumber/messages/timestamp.hpp
+++ b/cpp/include/cucumber/messages/timestamp.hpp
@@ -1,8 +1,7 @@
 #pragma once
 
 #include <vector>
-
-#include <cucumber/message.hpp>
+#include <string>
 
 namespace cucumber::messages {
 
@@ -12,7 +11,7 @@ namespace cucumber::messages {
 //
 // Generated code
 
-struct timestamp : cucumber::message
+struct timestamp
 {
     std::size_t seconds;
     std::size_t nanos;
@@ -20,4 +19,7 @@ struct timestamp : cucumber::message
     std::string to_string() const;
 };
 
+std::ostream&
+operator<<(std::ostream& os, const timestamp& msg);
+
 }
diff --git a/cpp/include/cucumber/messages/undefined_parameter_type.hpp b/cpp/include/cucumber/messages/undefined_parameter_type.hpp
index 3a537365..cf410fa9 100644
--- a/cpp/include/cucumber/messages/undefined_parameter_type.hpp
+++ b/cpp/include/cucumber/messages/undefined_parameter_type.hpp
@@ -1,8 +1,7 @@
 #pragma once
 
 #include <vector>
-
-#include <cucumber/message.hpp>
+#include <string>
 
 namespace cucumber::messages {
 
@@ -12,7 +11,7 @@ namespace cucumber::messages {
 //
 // Generated code
 
-struct undefined_parameter_type : cucumber::message
+struct undefined_parameter_type
 {
     std::string expression;
     std::string name;
@@ -20,4 +19,7 @@ struct undefined_parameter_type : cucumber::message
     std::string to_string() const;
 };
 
+std::ostream&
+operator<<(std::ostream& os, const undefined_parameter_type& msg);
+
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/message.cpp b/cpp/src/lib/cucumber-messages/cucumber/message.cpp
deleted file mode 100644
index 4b6e855a..00000000
--- a/cpp/src/lib/cucumber-messages/cucumber/message.cpp
+++ /dev/null
@@ -1,9 +0,0 @@
-#include <cucumber/message.hpp>
-
-namespace cucumber {
-
-std::string
-message::to_string() const
-{ return "message"; }
-
-}
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/attachment.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/attachment.cpp
index ca746bcd..9cfeff5c 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/attachment.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/attachment.cpp
@@ -1,6 +1,6 @@
 #include <sstream>
 
-#include <cucumber/utils.hpp>
+#include <cucumber/messages/utils.hpp>
 #include <cucumber/messages/attachment.hpp>
 
 namespace cucumber::messages {
@@ -11,17 +11,25 @@ attachment::to_string() const
     std::ostringstream oss;
 
     oss
-        << "body=" << body
-        << ", content_encoding=" << content_encoding
-        << ", file_name=" << file_name
-        << ", media_type=" << media_type
-        << ", source=" << source
-        << ", test_case_started_id=" << test_case_started_id
-        << ", test_step_id=" << test_step_id
-        << ", url=" << url
+    << "body=" << body
+    << ", content_encoding=" << content_encoding
+    << ", file_name=" << file_name
+    << ", media_type=" << media_type
+    << ", source=" << source
+    << ", test_case_started_id=" << test_case_started_id
+    << ", test_step_id=" << test_step_id
+    << ", url=" << url
         ;
 
     return oss.str();
 }
 
+std::ostream&
+operator<<(std::ostream& os, const attachment& msg)
+{
+    os << msg.to_string();
+
+    return os;
+}
+
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/background.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/background.cpp
index 0bb90e65..8b54b1d0 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/background.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/background.cpp
@@ -1,6 +1,6 @@
 #include <sstream>
 
-#include <cucumber/utils.hpp>
+#include <cucumber/messages/utils.hpp>
 #include <cucumber/messages/background.hpp>
 
 namespace cucumber::messages {
@@ -11,15 +11,23 @@ background::to_string() const
     std::ostringstream oss;
 
     oss
-        << "location=" << location
-        << ", keyword=" << keyword
-        << ", name=" << name
-        << ", description=" << description
-        << ", steps=" << steps
-        << ", id=" << id
+    << "location=" << location
+    << ", keyword=" << keyword
+    << ", name=" << name
+    << ", description=" << description
+    << ", steps=" << steps
+    << ", id=" << id
         ;
 
     return oss.str();
 }
 
+std::ostream&
+operator<<(std::ostream& os, const background& msg)
+{
+    os << msg.to_string();
+
+    return os;
+}
+
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/ci.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/ci.cpp
index 5e1f2d89..fef2d216 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/ci.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/ci.cpp
@@ -1,6 +1,6 @@
 #include <sstream>
 
-#include <cucumber/utils.hpp>
+#include <cucumber/messages/utils.hpp>
 #include <cucumber/messages/ci.hpp>
 
 namespace cucumber::messages {
@@ -11,13 +11,21 @@ ci::to_string() const
     std::ostringstream oss;
 
     oss
-        << "name=" << name
-        << ", url=" << url
-        << ", build_number=" << build_number
-        << ", git=" << git
+    << "name=" << name
+    << ", url=" << url
+    << ", build_number=" << build_number
+    << ", git=" << git
         ;
 
     return oss.str();
 }
 
+std::ostream&
+operator<<(std::ostream& os, const ci& msg)
+{
+    os << msg.to_string();
+
+    return os;
+}
+
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/comment.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/comment.cpp
index b4d6db2d..2a7431bf 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/comment.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/comment.cpp
@@ -1,6 +1,6 @@
 #include <sstream>
 
-#include <cucumber/utils.hpp>
+#include <cucumber/messages/utils.hpp>
 #include <cucumber/messages/comment.hpp>
 
 namespace cucumber::messages {
@@ -11,11 +11,19 @@ comment::to_string() const
     std::ostringstream oss;
 
     oss
-        << "location=" << location
-        << ", text=" << text
+    << "location=" << location
+    << ", text=" << text
         ;
 
     return oss.str();
 }
 
+std::ostream&
+operator<<(std::ostream& os, const comment& msg)
+{
+    os << msg.to_string();
+
+    return os;
+}
+
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/data_table.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/data_table.cpp
index 5d8c947d..f268e05a 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/data_table.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/data_table.cpp
@@ -1,6 +1,6 @@
 #include <sstream>
 
-#include <cucumber/utils.hpp>
+#include <cucumber/messages/utils.hpp>
 #include <cucumber/messages/data_table.hpp>
 
 namespace cucumber::messages {
@@ -11,11 +11,19 @@ data_table::to_string() const
     std::ostringstream oss;
 
     oss
-        << "location=" << location
-        << ", rows=" << rows
+    << "location=" << location
+    << ", rows=" << rows
         ;
 
     return oss.str();
 }
 
+std::ostream&
+operator<<(std::ostream& os, const data_table& msg)
+{
+    os << msg.to_string();
+
+    return os;
+}
+
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/doc_string.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/doc_string.cpp
index c60de5ec..008c2ff9 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/doc_string.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/doc_string.cpp
@@ -1,6 +1,6 @@
 #include <sstream>
 
-#include <cucumber/utils.hpp>
+#include <cucumber/messages/utils.hpp>
 #include <cucumber/messages/doc_string.hpp>
 
 namespace cucumber::messages {
@@ -11,13 +11,21 @@ doc_string::to_string() const
     std::ostringstream oss;
 
     oss
-        << "location=" << location
-        << ", media_type=" << media_type
-        << ", content=" << content
-        << ", delimiter=" << delimiter
+    << "location=" << location
+    << ", media_type=" << media_type
+    << ", content=" << content
+    << ", delimiter=" << delimiter
         ;
 
     return oss.str();
 }
 
+std::ostream&
+operator<<(std::ostream& os, const doc_string& msg)
+{
+    os << msg.to_string();
+
+    return os;
+}
+
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/duration.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/duration.cpp
index 067a21e3..b07bbcf3 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/duration.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/duration.cpp
@@ -1,6 +1,6 @@
 #include <sstream>
 
-#include <cucumber/utils.hpp>
+#include <cucumber/messages/utils.hpp>
 #include <cucumber/messages/duration.hpp>
 
 namespace cucumber::messages {
@@ -11,11 +11,19 @@ duration::to_string() const
     std::ostringstream oss;
 
     oss
-        << "seconds=" << seconds
-        << ", nanos=" << nanos
+    << "seconds=" << seconds
+    << ", nanos=" << nanos
         ;
 
     return oss.str();
 }
 
+std::ostream&
+operator<<(std::ostream& os, const duration& msg)
+{
+    os << msg.to_string();
+
+    return os;
+}
+
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/envelope.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/envelope.cpp
index 9706f5a0..dfb6636a 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/envelope.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/envelope.cpp
@@ -1,6 +1,6 @@
 #include <sstream>
 
-#include <cucumber/utils.hpp>
+#include <cucumber/messages/utils.hpp>
 #include <cucumber/messages/envelope.hpp>
 
 namespace cucumber::messages {
@@ -11,26 +11,34 @@ envelope::to_string() const
     std::ostringstream oss;
 
     oss
-        << "attachment=" << attachment
-        << ", gherkin_document=" << gherkin_document
-        << ", hook=" << hook
-        << ", meta=" << meta
-        << ", parameter_type=" << parameter_type
-        << ", parse_error=" << parse_error
-        << ", pickle=" << pickle
-        << ", source=" << source
-        << ", step_definition=" << step_definition
-        << ", test_case=" << test_case
-        << ", test_case_finished=" << test_case_finished
-        << ", test_case_started=" << test_case_started
-        << ", test_run_finished=" << test_run_finished
-        << ", test_run_started=" << test_run_started
-        << ", test_step_finished=" << test_step_finished
-        << ", test_step_started=" << test_step_started
-        << ", undefined_parameter_type=" << undefined_parameter_type
+    << "attachment=" << attachment
+    << ", gherkin_document=" << gherkin_document
+    << ", hook=" << hook
+    << ", meta=" << meta
+    << ", parameter_type=" << parameter_type
+    << ", parse_error=" << parse_error
+    << ", pickle=" << pickle
+    << ", source=" << source
+    << ", step_definition=" << step_definition
+    << ", test_case=" << test_case
+    << ", test_case_finished=" << test_case_finished
+    << ", test_case_started=" << test_case_started
+    << ", test_run_finished=" << test_run_finished
+    << ", test_run_started=" << test_run_started
+    << ", test_step_finished=" << test_step_finished
+    << ", test_step_started=" << test_step_started
+    << ", undefined_parameter_type=" << undefined_parameter_type
         ;
 
     return oss.str();
 }
 
+std::ostream&
+operator<<(std::ostream& os, const envelope& msg)
+{
+    os << msg.to_string();
+
+    return os;
+}
+
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/examples.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/examples.cpp
index 5d3e39eb..e4e0e119 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/examples.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/examples.cpp
@@ -1,6 +1,6 @@
 #include <sstream>
 
-#include <cucumber/utils.hpp>
+#include <cucumber/messages/utils.hpp>
 #include <cucumber/messages/examples.hpp>
 
 namespace cucumber::messages {
@@ -11,17 +11,25 @@ examples::to_string() const
     std::ostringstream oss;
 
     oss
-        << "location=" << location
-        << ", tags=" << tags
-        << ", keyword=" << keyword
-        << ", name=" << name
-        << ", description=" << description
-        << ", table_header=" << table_header
-        << ", table_body=" << table_body
-        << ", id=" << id
+    << "location=" << location
+    << ", tags=" << tags
+    << ", keyword=" << keyword
+    << ", name=" << name
+    << ", description=" << description
+    << ", table_header=" << table_header
+    << ", table_body=" << table_body
+    << ", id=" << id
         ;
 
     return oss.str();
 }
 
+std::ostream&
+operator<<(std::ostream& os, const examples& msg)
+{
+    os << msg.to_string();
+
+    return os;
+}
+
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/exception.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/exception.cpp
index 39342acf..dadc89ec 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/exception.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/exception.cpp
@@ -1,6 +1,6 @@
 #include <sstream>
 
-#include <cucumber/utils.hpp>
+#include <cucumber/messages/utils.hpp>
 #include <cucumber/messages/exception.hpp>
 
 namespace cucumber::messages {
@@ -11,11 +11,19 @@ exception::to_string() const
     std::ostringstream oss;
 
     oss
-        << "type=" << type
-        << ", message=" << message
+    << "type=" << type
+    << ", message=" << message
         ;
 
     return oss.str();
 }
 
+std::ostream&
+operator<<(std::ostream& os, const exception& msg)
+{
+    os << msg.to_string();
+
+    return os;
+}
+
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/feature.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/feature.cpp
index d01b402e..61764165 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/feature.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/feature.cpp
@@ -1,6 +1,6 @@
 #include <sstream>
 
-#include <cucumber/utils.hpp>
+#include <cucumber/messages/utils.hpp>
 #include <cucumber/messages/feature.hpp>
 
 namespace cucumber::messages {
@@ -11,16 +11,24 @@ feature::to_string() const
     std::ostringstream oss;
 
     oss
-        << "location=" << location
-        << ", tags=" << tags
-        << ", language=" << language
-        << ", keyword=" << keyword
-        << ", name=" << name
-        << ", description=" << description
-        << ", children=" << children
+    << "location=" << location
+    << ", tags=" << tags
+    << ", language=" << language
+    << ", keyword=" << keyword
+    << ", name=" << name
+    << ", description=" << description
+    << ", children=" << children
         ;
 
     return oss.str();
 }
 
+std::ostream&
+operator<<(std::ostream& os, const feature& msg)
+{
+    os << msg.to_string();
+
+    return os;
+}
+
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/feature_child.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/feature_child.cpp
index 89b06794..7830f4f7 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/feature_child.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/feature_child.cpp
@@ -1,6 +1,6 @@
 #include <sstream>
 
-#include <cucumber/utils.hpp>
+#include <cucumber/messages/utils.hpp>
 #include <cucumber/messages/feature_child.hpp>
 
 namespace cucumber::messages {
@@ -11,12 +11,20 @@ feature_child::to_string() const
     std::ostringstream oss;
 
     oss
-        << "rule=" << rule
-        << ", background=" << background
-        << ", scenario=" << scenario
+    << "rule=" << rule
+    << ", background=" << background
+    << ", scenario=" << scenario
         ;
 
     return oss.str();
 }
 
+std::ostream&
+operator<<(std::ostream& os, const feature_child& msg)
+{
+    os << msg.to_string();
+
+    return os;
+}
+
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/gherkin_document.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/gherkin_document.cpp
index 989d604b..b0c5f45f 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/gherkin_document.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/gherkin_document.cpp
@@ -1,6 +1,6 @@
 #include <sstream>
 
-#include <cucumber/utils.hpp>
+#include <cucumber/messages/utils.hpp>
 #include <cucumber/messages/gherkin_document.hpp>
 
 namespace cucumber::messages {
@@ -11,12 +11,20 @@ gherkin_document::to_string() const
     std::ostringstream oss;
 
     oss
-        << "uri=" << uri
-        << ", feature=" << feature
-        << ", comments=" << comments
+    << "uri=" << uri
+    << ", feature=" << feature
+    << ", comments=" << comments
         ;
 
     return oss.str();
 }
 
+std::ostream&
+operator<<(std::ostream& os, const gherkin_document& msg)
+{
+    os << msg.to_string();
+
+    return os;
+}
+
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/git.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/git.cpp
index 2ee1a0a6..77788f60 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/git.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/git.cpp
@@ -1,6 +1,6 @@
 #include <sstream>
 
-#include <cucumber/utils.hpp>
+#include <cucumber/messages/utils.hpp>
 #include <cucumber/messages/git.hpp>
 
 namespace cucumber::messages {
@@ -11,13 +11,21 @@ git::to_string() const
     std::ostringstream oss;
 
     oss
-        << "remote=" << remote
-        << ", revision=" << revision
-        << ", branch=" << branch
-        << ", tag=" << tag
+    << "remote=" << remote
+    << ", revision=" << revision
+    << ", branch=" << branch
+    << ", tag=" << tag
         ;
 
     return oss.str();
 }
 
+std::ostream&
+operator<<(std::ostream& os, const git& msg)
+{
+    os << msg.to_string();
+
+    return os;
+}
+
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/group.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/group.cpp
index 526c259c..2ef52c2a 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/group.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/group.cpp
@@ -1,6 +1,6 @@
 #include <sstream>
 
-#include <cucumber/utils.hpp>
+#include <cucumber/messages/utils.hpp>
 #include <cucumber/messages/group.hpp>
 
 namespace cucumber::messages {
@@ -11,12 +11,20 @@ group::to_string() const
     std::ostringstream oss;
 
     oss
-        << "children=" << children
-        << ", start=" << start
-        << ", value=" << value
+    << "children=" << children
+    << ", start=" << start
+    << ", value=" << value
         ;
 
     return oss.str();
 }
 
+std::ostream&
+operator<<(std::ostream& os, const group& msg)
+{
+    os << msg.to_string();
+
+    return os;
+}
+
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/hook.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/hook.cpp
index 45301cc6..2af2513c 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/hook.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/hook.cpp
@@ -1,6 +1,6 @@
 #include <sstream>
 
-#include <cucumber/utils.hpp>
+#include <cucumber/messages/utils.hpp>
 #include <cucumber/messages/hook.hpp>
 
 namespace cucumber::messages {
@@ -11,13 +11,21 @@ hook::to_string() const
     std::ostringstream oss;
 
     oss
-        << "id=" << id
-        << ", name=" << name
-        << ", source_reference=" << source_reference
-        << ", tag_expression=" << tag_expression
+    << "id=" << id
+    << ", name=" << name
+    << ", source_reference=" << source_reference
+    << ", tag_expression=" << tag_expression
         ;
 
     return oss.str();
 }
 
+std::ostream&
+operator<<(std::ostream& os, const hook& msg)
+{
+    os << msg.to_string();
+
+    return os;
+}
+
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/java_method.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/java_method.cpp
index 2747d576..bc256511 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/java_method.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/java_method.cpp
@@ -1,6 +1,6 @@
 #include <sstream>
 
-#include <cucumber/utils.hpp>
+#include <cucumber/messages/utils.hpp>
 #include <cucumber/messages/java_method.hpp>
 
 namespace cucumber::messages {
@@ -11,12 +11,20 @@ java_method::to_string() const
     std::ostringstream oss;
 
     oss
-        << "class_name=" << class_name
-        << ", method_name=" << method_name
-        << ", method_parameter_types=" << cucumber::to_string(method_parameter_types)
+    << "class_name=" << class_name
+    << ", method_name=" << method_name
+    << ", method_parameter_types=" << method_parameter_types
         ;
 
     return oss.str();
 }
 
+std::ostream&
+operator<<(std::ostream& os, const java_method& msg)
+{
+    os << msg.to_string();
+
+    return os;
+}
+
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/java_stack_trace_element.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/java_stack_trace_element.cpp
index d0068de2..8b133e47 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/java_stack_trace_element.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/java_stack_trace_element.cpp
@@ -1,6 +1,6 @@
 #include <sstream>
 
-#include <cucumber/utils.hpp>
+#include <cucumber/messages/utils.hpp>
 #include <cucumber/messages/java_stack_trace_element.hpp>
 
 namespace cucumber::messages {
@@ -11,12 +11,20 @@ java_stack_trace_element::to_string() const
     std::ostringstream oss;
 
     oss
-        << "class_name=" << class_name
-        << ", file_name=" << file_name
-        << ", method_name=" << method_name
+    << "class_name=" << class_name
+    << ", file_name=" << file_name
+    << ", method_name=" << method_name
         ;
 
     return oss.str();
 }
 
+std::ostream&
+operator<<(std::ostream& os, const java_stack_trace_element& msg)
+{
+    os << msg.to_string();
+
+    return os;
+}
+
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/location.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/location.cpp
index d9c71b91..108fb7f1 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/location.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/location.cpp
@@ -1,6 +1,6 @@
 #include <sstream>
 
-#include <cucumber/utils.hpp>
+#include <cucumber/messages/utils.hpp>
 #include <cucumber/messages/location.hpp>
 
 namespace cucumber::messages {
@@ -11,11 +11,19 @@ location::to_string() const
     std::ostringstream oss;
 
     oss
-        << "line=" << line
-        << ", column=" << column
+    << "line=" << line
+    << ", column=" << column
         ;
 
     return oss.str();
 }
 
+std::ostream&
+operator<<(std::ostream& os, const location& msg)
+{
+    os << msg.to_string();
+
+    return os;
+}
+
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/meta.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/meta.cpp
index 278a8080..fd8ecebd 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/meta.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/meta.cpp
@@ -1,6 +1,6 @@
 #include <sstream>
 
-#include <cucumber/utils.hpp>
+#include <cucumber/messages/utils.hpp>
 #include <cucumber/messages/meta.hpp>
 
 namespace cucumber::messages {
@@ -11,15 +11,23 @@ meta::to_string() const
     std::ostringstream oss;
 
     oss
-        << "protocol_version=" << protocol_version
-        << ", implementation=" << implementation
-        << ", runtime=" << runtime
-        << ", os=" << os
-        << ", cpu=" << cpu
-        << ", ci=" << ci
+    << "protocol_version=" << protocol_version
+    << ", implementation=" << implementation
+    << ", runtime=" << runtime
+    << ", os=" << os
+    << ", cpu=" << cpu
+    << ", ci=" << ci
         ;
 
     return oss.str();
 }
 
+std::ostream&
+operator<<(std::ostream& os, const meta& msg)
+{
+    os << msg.to_string();
+
+    return os;
+}
+
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/parameter_type.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/parameter_type.cpp
index 431f2198..50e48022 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/parameter_type.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/parameter_type.cpp
@@ -1,6 +1,6 @@
 #include <sstream>
 
-#include <cucumber/utils.hpp>
+#include <cucumber/messages/utils.hpp>
 #include <cucumber/messages/parameter_type.hpp>
 
 namespace cucumber::messages {
@@ -11,15 +11,23 @@ parameter_type::to_string() const
     std::ostringstream oss;
 
     oss
-        << "name=" << name
-        << ", regular_expressions=" << cucumber::to_string(regular_expressions)
-        << ", prefer_for_regular_expression_match=" << prefer_for_regular_expression_match
-        << ", use_for_snippets=" << use_for_snippets
-        << ", id=" << id
-        << ", source_reference=" << source_reference
+    << "name=" << name
+    << ", regular_expressions=" << regular_expressions
+    << ", prefer_for_regular_expression_match=" << prefer_for_regular_expression_match
+    << ", use_for_snippets=" << use_for_snippets
+    << ", id=" << id
+    << ", source_reference=" << source_reference
         ;
 
     return oss.str();
 }
 
+std::ostream&
+operator<<(std::ostream& os, const parameter_type& msg)
+{
+    os << msg.to_string();
+
+    return os;
+}
+
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/parse_error.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/parse_error.cpp
index dd64e842..00e11cdb 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/parse_error.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/parse_error.cpp
@@ -1,6 +1,6 @@
 #include <sstream>
 
-#include <cucumber/utils.hpp>
+#include <cucumber/messages/utils.hpp>
 #include <cucumber/messages/parse_error.hpp>
 
 namespace cucumber::messages {
@@ -11,11 +11,19 @@ parse_error::to_string() const
     std::ostringstream oss;
 
     oss
-        << "source=" << source
-        << ", message=" << message
+    << "source=" << source
+    << ", message=" << message
         ;
 
     return oss.str();
 }
 
+std::ostream&
+operator<<(std::ostream& os, const parse_error& msg)
+{
+    os << msg.to_string();
+
+    return os;
+}
+
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/pickle.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/pickle.cpp
index c3bc1f78..d688fe23 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/pickle.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/pickle.cpp
@@ -1,6 +1,6 @@
 #include <sstream>
 
-#include <cucumber/utils.hpp>
+#include <cucumber/messages/utils.hpp>
 #include <cucumber/messages/pickle.hpp>
 
 namespace cucumber::messages {
@@ -11,16 +11,24 @@ pickle::to_string() const
     std::ostringstream oss;
 
     oss
-        << "id=" << id
-        << ", uri=" << uri
-        << ", name=" << name
-        << ", language=" << language
-        << ", steps=" << steps
-        << ", tags=" << tags
-        << ", ast_node_ids=" << cucumber::to_string(ast_node_ids)
+    << "id=" << id
+    << ", uri=" << uri
+    << ", name=" << name
+    << ", language=" << language
+    << ", steps=" << steps
+    << ", tags=" << tags
+    << ", ast_node_ids=" << ast_node_ids
         ;
 
     return oss.str();
 }
 
+std::ostream&
+operator<<(std::ostream& os, const pickle& msg)
+{
+    os << msg.to_string();
+
+    return os;
+}
+
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_doc_string.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_doc_string.cpp
index 7c3e2078..c097930e 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_doc_string.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_doc_string.cpp
@@ -1,6 +1,6 @@
 #include <sstream>
 
-#include <cucumber/utils.hpp>
+#include <cucumber/messages/utils.hpp>
 #include <cucumber/messages/pickle_doc_string.hpp>
 
 namespace cucumber::messages {
@@ -11,11 +11,19 @@ pickle_doc_string::to_string() const
     std::ostringstream oss;
 
     oss
-        << "media_type=" << media_type
-        << ", content=" << content
+    << "media_type=" << media_type
+    << ", content=" << content
         ;
 
     return oss.str();
 }
 
+std::ostream&
+operator<<(std::ostream& os, const pickle_doc_string& msg)
+{
+    os << msg.to_string();
+
+    return os;
+}
+
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_step.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_step.cpp
index 8574a6dc..bb591c1e 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_step.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_step.cpp
@@ -1,6 +1,6 @@
 #include <sstream>
 
-#include <cucumber/utils.hpp>
+#include <cucumber/messages/utils.hpp>
 #include <cucumber/messages/pickle_step.hpp>
 
 namespace cucumber::messages {
@@ -11,14 +11,22 @@ pickle_step::to_string() const
     std::ostringstream oss;
 
     oss
-        << "argument=" << argument
-        << ", ast_node_ids=" << cucumber::to_string(ast_node_ids)
-        << ", id=" << id
-        << ", type=" << type
-        << ", text=" << text
+    << "argument=" << argument
+    << ", ast_node_ids=" << ast_node_ids
+    << ", id=" << id
+    << ", type=" << type
+    << ", text=" << text
         ;
 
     return oss.str();
 }
 
+std::ostream&
+operator<<(std::ostream& os, const pickle_step& msg)
+{
+    os << msg.to_string();
+
+    return os;
+}
+
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_step_argument.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_step_argument.cpp
index a1424ca3..632c0a82 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_step_argument.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_step_argument.cpp
@@ -1,6 +1,6 @@
 #include <sstream>
 
-#include <cucumber/utils.hpp>
+#include <cucumber/messages/utils.hpp>
 #include <cucumber/messages/pickle_step_argument.hpp>
 
 namespace cucumber::messages {
@@ -11,11 +11,19 @@ pickle_step_argument::to_string() const
     std::ostringstream oss;
 
     oss
-        << "doc_string=" << doc_string
-        << ", data_table=" << data_table
+    << "doc_string=" << doc_string
+    << ", data_table=" << data_table
         ;
 
     return oss.str();
 }
 
+std::ostream&
+operator<<(std::ostream& os, const pickle_step_argument& msg)
+{
+    os << msg.to_string();
+
+    return os;
+}
+
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_table.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_table.cpp
index 800d491a..3bbbb441 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_table.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_table.cpp
@@ -1,6 +1,6 @@
 #include <sstream>
 
-#include <cucumber/utils.hpp>
+#include <cucumber/messages/utils.hpp>
 #include <cucumber/messages/pickle_table.hpp>
 
 namespace cucumber::messages {
@@ -11,10 +11,18 @@ pickle_table::to_string() const
     std::ostringstream oss;
 
     oss
-        << "rows=" << rows
+    << "rows=" << rows
         ;
 
     return oss.str();
 }
 
+std::ostream&
+operator<<(std::ostream& os, const pickle_table& msg)
+{
+    os << msg.to_string();
+
+    return os;
+}
+
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_table_cell.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_table_cell.cpp
index adbd5f62..1657f4ad 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_table_cell.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_table_cell.cpp
@@ -1,6 +1,6 @@
 #include <sstream>
 
-#include <cucumber/utils.hpp>
+#include <cucumber/messages/utils.hpp>
 #include <cucumber/messages/pickle_table_cell.hpp>
 
 namespace cucumber::messages {
@@ -11,10 +11,18 @@ pickle_table_cell::to_string() const
     std::ostringstream oss;
 
     oss
-        << "value=" << value
+    << "value=" << value
         ;
 
     return oss.str();
 }
 
+std::ostream&
+operator<<(std::ostream& os, const pickle_table_cell& msg)
+{
+    os << msg.to_string();
+
+    return os;
+}
+
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_table_row.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_table_row.cpp
index b14fc5ef..28780120 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_table_row.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_table_row.cpp
@@ -1,6 +1,6 @@
 #include <sstream>
 
-#include <cucumber/utils.hpp>
+#include <cucumber/messages/utils.hpp>
 #include <cucumber/messages/pickle_table_row.hpp>
 
 namespace cucumber::messages {
@@ -11,10 +11,18 @@ pickle_table_row::to_string() const
     std::ostringstream oss;
 
     oss
-        << "cells=" << cells
+    << "cells=" << cells
         ;
 
     return oss.str();
 }
 
+std::ostream&
+operator<<(std::ostream& os, const pickle_table_row& msg)
+{
+    os << msg.to_string();
+
+    return os;
+}
+
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_tag.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_tag.cpp
index 36ea011c..f7e27668 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_tag.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_tag.cpp
@@ -1,6 +1,6 @@
 #include <sstream>
 
-#include <cucumber/utils.hpp>
+#include <cucumber/messages/utils.hpp>
 #include <cucumber/messages/pickle_tag.hpp>
 
 namespace cucumber::messages {
@@ -11,11 +11,19 @@ pickle_tag::to_string() const
     std::ostringstream oss;
 
     oss
-        << "name=" << name
-        << ", ast_node_id=" << ast_node_id
+    << "name=" << name
+    << ", ast_node_id=" << ast_node_id
         ;
 
     return oss.str();
 }
 
+std::ostream&
+operator<<(std::ostream& os, const pickle_tag& msg)
+{
+    os << msg.to_string();
+
+    return os;
+}
+
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/product.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/product.cpp
index 22a72dbf..87bfc578 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/product.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/product.cpp
@@ -1,6 +1,6 @@
 #include <sstream>
 
-#include <cucumber/utils.hpp>
+#include <cucumber/messages/utils.hpp>
 #include <cucumber/messages/product.hpp>
 
 namespace cucumber::messages {
@@ -11,11 +11,19 @@ product::to_string() const
     std::ostringstream oss;
 
     oss
-        << "name=" << name
-        << ", version=" << version
+    << "name=" << name
+    << ", version=" << version
         ;
 
     return oss.str();
 }
 
+std::ostream&
+operator<<(std::ostream& os, const product& msg)
+{
+    os << msg.to_string();
+
+    return os;
+}
+
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/rule.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/rule.cpp
index aa3a92af..19e251f5 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/rule.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/rule.cpp
@@ -1,6 +1,6 @@
 #include <sstream>
 
-#include <cucumber/utils.hpp>
+#include <cucumber/messages/utils.hpp>
 #include <cucumber/messages/rule.hpp>
 
 namespace cucumber::messages {
@@ -11,16 +11,24 @@ rule::to_string() const
     std::ostringstream oss;
 
     oss
-        << "location=" << location
-        << ", tags=" << tags
-        << ", keyword=" << keyword
-        << ", name=" << name
-        << ", description=" << description
-        << ", children=" << children
-        << ", id=" << id
+    << "location=" << location
+    << ", tags=" << tags
+    << ", keyword=" << keyword
+    << ", name=" << name
+    << ", description=" << description
+    << ", children=" << children
+    << ", id=" << id
         ;
 
     return oss.str();
 }
 
+std::ostream&
+operator<<(std::ostream& os, const rule& msg)
+{
+    os << msg.to_string();
+
+    return os;
+}
+
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/rule_child.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/rule_child.cpp
index 3cc22a7d..0d34afc3 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/rule_child.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/rule_child.cpp
@@ -1,6 +1,6 @@
 #include <sstream>
 
-#include <cucumber/utils.hpp>
+#include <cucumber/messages/utils.hpp>
 #include <cucumber/messages/rule_child.hpp>
 
 namespace cucumber::messages {
@@ -11,11 +11,19 @@ rule_child::to_string() const
     std::ostringstream oss;
 
     oss
-        << "background=" << background
-        << ", scenario=" << scenario
+    << "background=" << background
+    << ", scenario=" << scenario
         ;
 
     return oss.str();
 }
 
+std::ostream&
+operator<<(std::ostream& os, const rule_child& msg)
+{
+    os << msg.to_string();
+
+    return os;
+}
+
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/scenario.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/scenario.cpp
index 136bb400..02d4486a 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/scenario.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/scenario.cpp
@@ -1,6 +1,6 @@
 #include <sstream>
 
-#include <cucumber/utils.hpp>
+#include <cucumber/messages/utils.hpp>
 #include <cucumber/messages/scenario.hpp>
 
 namespace cucumber::messages {
@@ -11,17 +11,25 @@ scenario::to_string() const
     std::ostringstream oss;
 
     oss
-        << "location=" << location
-        << ", tags=" << tags
-        << ", keyword=" << keyword
-        << ", name=" << name
-        << ", description=" << description
-        << ", steps=" << steps
-        << ", examples=" << examples
-        << ", id=" << id
+    << "location=" << location
+    << ", tags=" << tags
+    << ", keyword=" << keyword
+    << ", name=" << name
+    << ", description=" << description
+    << ", steps=" << steps
+    << ", examples=" << examples
+    << ", id=" << id
         ;
 
     return oss.str();
 }
 
+std::ostream&
+operator<<(std::ostream& os, const scenario& msg)
+{
+    os << msg.to_string();
+
+    return os;
+}
+
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/source.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/source.cpp
index 8e70138f..61504e13 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/source.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/source.cpp
@@ -1,6 +1,6 @@
 #include <sstream>
 
-#include <cucumber/utils.hpp>
+#include <cucumber/messages/utils.hpp>
 #include <cucumber/messages/source.hpp>
 
 namespace cucumber::messages {
@@ -11,12 +11,20 @@ source::to_string() const
     std::ostringstream oss;
 
     oss
-        << "uri=" << uri
-        << ", data=" << data
-        << ", media_type=" << media_type
+    << "uri=" << uri
+    << ", data=" << data
+    << ", media_type=" << media_type
         ;
 
     return oss.str();
 }
 
+std::ostream&
+operator<<(std::ostream& os, const source& msg)
+{
+    os << msg.to_string();
+
+    return os;
+}
+
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/source_reference.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/source_reference.cpp
index 0ac31ffe..6d06acd6 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/source_reference.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/source_reference.cpp
@@ -1,6 +1,6 @@
 #include <sstream>
 
-#include <cucumber/utils.hpp>
+#include <cucumber/messages/utils.hpp>
 #include <cucumber/messages/source_reference.hpp>
 
 namespace cucumber::messages {
@@ -11,13 +11,21 @@ source_reference::to_string() const
     std::ostringstream oss;
 
     oss
-        << "uri=" << uri
-        << ", java_method=" << java_method
-        << ", java_stack_trace_element=" << java_stack_trace_element
-        << ", location=" << location
+    << "uri=" << uri
+    << ", java_method=" << java_method
+    << ", java_stack_trace_element=" << java_stack_trace_element
+    << ", location=" << location
         ;
 
     return oss.str();
 }
 
+std::ostream&
+operator<<(std::ostream& os, const source_reference& msg)
+{
+    os << msg.to_string();
+
+    return os;
+}
+
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/step.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/step.cpp
index 50775f3c..72d99336 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/step.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/step.cpp
@@ -1,6 +1,6 @@
 #include <sstream>
 
-#include <cucumber/utils.hpp>
+#include <cucumber/messages/utils.hpp>
 #include <cucumber/messages/step.hpp>
 
 namespace cucumber::messages {
@@ -11,16 +11,24 @@ step::to_string() const
     std::ostringstream oss;
 
     oss
-        << "location=" << location
-        << ", keyword=" << keyword
-        << ", keyword_type=" << keyword_type
-        << ", text=" << text
-        << ", doc_string=" << doc_string
-        << ", data_table=" << data_table
-        << ", id=" << id
+    << "location=" << location
+    << ", keyword=" << keyword
+    << ", keyword_type=" << keyword_type
+    << ", text=" << text
+    << ", doc_string=" << doc_string
+    << ", data_table=" << data_table
+    << ", id=" << id
         ;
 
     return oss.str();
 }
 
+std::ostream&
+operator<<(std::ostream& os, const step& msg)
+{
+    os << msg.to_string();
+
+    return os;
+}
+
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/step_definition.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/step_definition.cpp
index 2808a70f..23cf9b72 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/step_definition.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/step_definition.cpp
@@ -1,6 +1,6 @@
 #include <sstream>
 
-#include <cucumber/utils.hpp>
+#include <cucumber/messages/utils.hpp>
 #include <cucumber/messages/step_definition.hpp>
 
 namespace cucumber::messages {
@@ -11,12 +11,20 @@ step_definition::to_string() const
     std::ostringstream oss;
 
     oss
-        << "id=" << id
-        << ", pattern=" << pattern
-        << ", source_reference=" << source_reference
+    << "id=" << id
+    << ", pattern=" << pattern
+    << ", source_reference=" << source_reference
         ;
 
     return oss.str();
 }
 
+std::ostream&
+operator<<(std::ostream& os, const step_definition& msg)
+{
+    os << msg.to_string();
+
+    return os;
+}
+
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/step_definition_pattern.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/step_definition_pattern.cpp
index 7d2572ff..69a0b54e 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/step_definition_pattern.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/step_definition_pattern.cpp
@@ -1,6 +1,6 @@
 #include <sstream>
 
-#include <cucumber/utils.hpp>
+#include <cucumber/messages/utils.hpp>
 #include <cucumber/messages/step_definition_pattern.hpp>
 
 namespace cucumber::messages {
@@ -11,11 +11,19 @@ step_definition_pattern::to_string() const
     std::ostringstream oss;
 
     oss
-        << "source=" << source
-        << ", type=" << type
+    << "source=" << source
+    << ", type=" << type
         ;
 
     return oss.str();
 }
 
+std::ostream&
+operator<<(std::ostream& os, const step_definition_pattern& msg)
+{
+    os << msg.to_string();
+
+    return os;
+}
+
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/step_match_argument.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/step_match_argument.cpp
index 3909c47f..09ae706e 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/step_match_argument.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/step_match_argument.cpp
@@ -1,6 +1,6 @@
 #include <sstream>
 
-#include <cucumber/utils.hpp>
+#include <cucumber/messages/utils.hpp>
 #include <cucumber/messages/step_match_argument.hpp>
 
 namespace cucumber::messages {
@@ -11,11 +11,19 @@ step_match_argument::to_string() const
     std::ostringstream oss;
 
     oss
-        << "group=" << group
-        << ", parameter_type_name=" << parameter_type_name
+    << "group=" << group
+    << ", parameter_type_name=" << parameter_type_name
         ;
 
     return oss.str();
 }
 
+std::ostream&
+operator<<(std::ostream& os, const step_match_argument& msg)
+{
+    os << msg.to_string();
+
+    return os;
+}
+
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/step_match_arguments_list.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/step_match_arguments_list.cpp
index 0d35a6e5..68b6bdec 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/step_match_arguments_list.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/step_match_arguments_list.cpp
@@ -1,6 +1,6 @@
 #include <sstream>
 
-#include <cucumber/utils.hpp>
+#include <cucumber/messages/utils.hpp>
 #include <cucumber/messages/step_match_arguments_list.hpp>
 
 namespace cucumber::messages {
@@ -11,10 +11,18 @@ step_match_arguments_list::to_string() const
     std::ostringstream oss;
 
     oss
-        << "step_match_arguments=" << step_match_arguments
+    << "step_match_arguments=" << step_match_arguments
         ;
 
     return oss.str();
 }
 
+std::ostream&
+operator<<(std::ostream& os, const step_match_arguments_list& msg)
+{
+    os << msg.to_string();
+
+    return os;
+}
+
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/table_cell.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/table_cell.cpp
index c2024bf5..7f13fe9d 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/table_cell.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/table_cell.cpp
@@ -1,6 +1,6 @@
 #include <sstream>
 
-#include <cucumber/utils.hpp>
+#include <cucumber/messages/utils.hpp>
 #include <cucumber/messages/table_cell.hpp>
 
 namespace cucumber::messages {
@@ -11,11 +11,19 @@ table_cell::to_string() const
     std::ostringstream oss;
 
     oss
-        << "location=" << location
-        << ", value=" << value
+    << "location=" << location
+    << ", value=" << value
         ;
 
     return oss.str();
 }
 
+std::ostream&
+operator<<(std::ostream& os, const table_cell& msg)
+{
+    os << msg.to_string();
+
+    return os;
+}
+
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/table_row.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/table_row.cpp
index 8b94c892..6ceffa12 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/table_row.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/table_row.cpp
@@ -1,6 +1,6 @@
 #include <sstream>
 
-#include <cucumber/utils.hpp>
+#include <cucumber/messages/utils.hpp>
 #include <cucumber/messages/table_row.hpp>
 
 namespace cucumber::messages {
@@ -11,12 +11,20 @@ table_row::to_string() const
     std::ostringstream oss;
 
     oss
-        << "location=" << location
-        << ", cells=" << cells
-        << ", id=" << id
+    << "location=" << location
+    << ", cells=" << cells
+    << ", id=" << id
         ;
 
     return oss.str();
 }
 
+std::ostream&
+operator<<(std::ostream& os, const table_row& msg)
+{
+    os << msg.to_string();
+
+    return os;
+}
+
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/tag.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/tag.cpp
index b6e01815..b577b3db 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/tag.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/tag.cpp
@@ -1,6 +1,6 @@
 #include <sstream>
 
-#include <cucumber/utils.hpp>
+#include <cucumber/messages/utils.hpp>
 #include <cucumber/messages/tag.hpp>
 
 namespace cucumber::messages {
@@ -11,12 +11,20 @@ tag::to_string() const
     std::ostringstream oss;
 
     oss
-        << "location=" << location
-        << ", name=" << name
-        << ", id=" << id
+    << "location=" << location
+    << ", name=" << name
+    << ", id=" << id
         ;
 
     return oss.str();
 }
 
+std::ostream&
+operator<<(std::ostream& os, const tag& msg)
+{
+    os << msg.to_string();
+
+    return os;
+}
+
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/test_case.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/test_case.cpp
index a428c35f..6b6222d0 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/test_case.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/test_case.cpp
@@ -1,6 +1,6 @@
 #include <sstream>
 
-#include <cucumber/utils.hpp>
+#include <cucumber/messages/utils.hpp>
 #include <cucumber/messages/test_case.hpp>
 
 namespace cucumber::messages {
@@ -11,12 +11,20 @@ test_case::to_string() const
     std::ostringstream oss;
 
     oss
-        << "id=" << id
-        << ", pickle_id=" << pickle_id
-        << ", test_steps=" << test_steps
+    << "id=" << id
+    << ", pickle_id=" << pickle_id
+    << ", test_steps=" << test_steps
         ;
 
     return oss.str();
 }
 
+std::ostream&
+operator<<(std::ostream& os, const test_case& msg)
+{
+    os << msg.to_string();
+
+    return os;
+}
+
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/test_case_finished.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/test_case_finished.cpp
index 5ee68d28..77aba079 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/test_case_finished.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/test_case_finished.cpp
@@ -1,6 +1,6 @@
 #include <sstream>
 
-#include <cucumber/utils.hpp>
+#include <cucumber/messages/utils.hpp>
 #include <cucumber/messages/test_case_finished.hpp>
 
 namespace cucumber::messages {
@@ -11,12 +11,20 @@ test_case_finished::to_string() const
     std::ostringstream oss;
 
     oss
-        << "test_case_started_id=" << test_case_started_id
-        << ", timestamp=" << timestamp
-        << ", will_be_retried=" << will_be_retried
+    << "test_case_started_id=" << test_case_started_id
+    << ", timestamp=" << timestamp
+    << ", will_be_retried=" << will_be_retried
         ;
 
     return oss.str();
 }
 
+std::ostream&
+operator<<(std::ostream& os, const test_case_finished& msg)
+{
+    os << msg.to_string();
+
+    return os;
+}
+
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/test_case_started.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/test_case_started.cpp
index d13bce77..0f6d98bf 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/test_case_started.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/test_case_started.cpp
@@ -1,6 +1,6 @@
 #include <sstream>
 
-#include <cucumber/utils.hpp>
+#include <cucumber/messages/utils.hpp>
 #include <cucumber/messages/test_case_started.hpp>
 
 namespace cucumber::messages {
@@ -11,14 +11,22 @@ test_case_started::to_string() const
     std::ostringstream oss;
 
     oss
-        << "attempt=" << attempt
-        << ", id=" << id
-        << ", test_case_id=" << test_case_id
-        << ", worker_id=" << worker_id
-        << ", timestamp=" << timestamp
+    << "attempt=" << attempt
+    << ", id=" << id
+    << ", test_case_id=" << test_case_id
+    << ", worker_id=" << worker_id
+    << ", timestamp=" << timestamp
         ;
 
     return oss.str();
 }
 
+std::ostream&
+operator<<(std::ostream& os, const test_case_started& msg)
+{
+    os << msg.to_string();
+
+    return os;
+}
+
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/test_run_finished.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/test_run_finished.cpp
index 186e8b69..8cdcff29 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/test_run_finished.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/test_run_finished.cpp
@@ -1,6 +1,6 @@
 #include <sstream>
 
-#include <cucumber/utils.hpp>
+#include <cucumber/messages/utils.hpp>
 #include <cucumber/messages/test_run_finished.hpp>
 
 namespace cucumber::messages {
@@ -11,13 +11,21 @@ test_run_finished::to_string() const
     std::ostringstream oss;
 
     oss
-        << "message=" << message
-        << ", success=" << success
-        << ", timestamp=" << timestamp
-        << ", exception=" << exception
+    << "message=" << message
+    << ", success=" << success
+    << ", timestamp=" << timestamp
+    << ", exception=" << exception
         ;
 
     return oss.str();
 }
 
+std::ostream&
+operator<<(std::ostream& os, const test_run_finished& msg)
+{
+    os << msg.to_string();
+
+    return os;
+}
+
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/test_run_started.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/test_run_started.cpp
index e0f81b1b..b33f3bee 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/test_run_started.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/test_run_started.cpp
@@ -1,6 +1,6 @@
 #include <sstream>
 
-#include <cucumber/utils.hpp>
+#include <cucumber/messages/utils.hpp>
 #include <cucumber/messages/test_run_started.hpp>
 
 namespace cucumber::messages {
@@ -11,10 +11,18 @@ test_run_started::to_string() const
     std::ostringstream oss;
 
     oss
-        << "timestamp=" << timestamp
+    << "timestamp=" << timestamp
         ;
 
     return oss.str();
 }
 
+std::ostream&
+operator<<(std::ostream& os, const test_run_started& msg)
+{
+    os << msg.to_string();
+
+    return os;
+}
+
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/test_step.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/test_step.cpp
index 44bb9be0..587480d5 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/test_step.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/test_step.cpp
@@ -1,6 +1,6 @@
 #include <sstream>
 
-#include <cucumber/utils.hpp>
+#include <cucumber/messages/utils.hpp>
 #include <cucumber/messages/test_step.hpp>
 
 namespace cucumber::messages {
@@ -11,14 +11,22 @@ test_step::to_string() const
     std::ostringstream oss;
 
     oss
-        << "hook_id=" << hook_id
-        << ", id=" << id
-        << ", pickle_step_id=" << pickle_step_id
-        << ", step_definition_ids=" << cucumber::to_string(step_definition_ids)
-        << ", step_match_arguments_lists=" << step_match_arguments_lists
+    << "hook_id=" << hook_id
+    << ", id=" << id
+    << ", pickle_step_id=" << pickle_step_id
+    << ", step_definition_ids=" << step_definition_ids
+    << ", step_match_arguments_lists=" << step_match_arguments_lists
         ;
 
     return oss.str();
 }
 
+std::ostream&
+operator<<(std::ostream& os, const test_step& msg)
+{
+    os << msg.to_string();
+
+    return os;
+}
+
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/test_step_finished.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/test_step_finished.cpp
index df391d1d..b1cab6b1 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/test_step_finished.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/test_step_finished.cpp
@@ -1,6 +1,6 @@
 #include <sstream>
 
-#include <cucumber/utils.hpp>
+#include <cucumber/messages/utils.hpp>
 #include <cucumber/messages/test_step_finished.hpp>
 
 namespace cucumber::messages {
@@ -11,13 +11,21 @@ test_step_finished::to_string() const
     std::ostringstream oss;
 
     oss
-        << "test_case_started_id=" << test_case_started_id
-        << ", test_step_id=" << test_step_id
-        << ", test_step_result=" << test_step_result
-        << ", timestamp=" << timestamp
+    << "test_case_started_id=" << test_case_started_id
+    << ", test_step_id=" << test_step_id
+    << ", test_step_result=" << test_step_result
+    << ", timestamp=" << timestamp
         ;
 
     return oss.str();
 }
 
+std::ostream&
+operator<<(std::ostream& os, const test_step_finished& msg)
+{
+    os << msg.to_string();
+
+    return os;
+}
+
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/test_step_result.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/test_step_result.cpp
index 5a0b8240..885f23c9 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/test_step_result.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/test_step_result.cpp
@@ -1,6 +1,6 @@
 #include <sstream>
 
-#include <cucumber/utils.hpp>
+#include <cucumber/messages/utils.hpp>
 #include <cucumber/messages/test_step_result.hpp>
 
 namespace cucumber::messages {
@@ -11,13 +11,21 @@ test_step_result::to_string() const
     std::ostringstream oss;
 
     oss
-        << "duration=" << duration
-        << ", message=" << message
-        << ", status=" << status
-        << ", exception=" << exception
+    << "duration=" << duration
+    << ", message=" << message
+    << ", status=" << status
+    << ", exception=" << exception
         ;
 
     return oss.str();
 }
 
+std::ostream&
+operator<<(std::ostream& os, const test_step_result& msg)
+{
+    os << msg.to_string();
+
+    return os;
+}
+
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/test_step_started.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/test_step_started.cpp
index ffb6dba2..885c0286 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/test_step_started.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/test_step_started.cpp
@@ -1,6 +1,6 @@
 #include <sstream>
 
-#include <cucumber/utils.hpp>
+#include <cucumber/messages/utils.hpp>
 #include <cucumber/messages/test_step_started.hpp>
 
 namespace cucumber::messages {
@@ -11,12 +11,20 @@ test_step_started::to_string() const
     std::ostringstream oss;
 
     oss
-        << "test_case_started_id=" << test_case_started_id
-        << ", test_step_id=" << test_step_id
-        << ", timestamp=" << timestamp
+    << "test_case_started_id=" << test_case_started_id
+    << ", test_step_id=" << test_step_id
+    << ", timestamp=" << timestamp
         ;
 
     return oss.str();
 }
 
+std::ostream&
+operator<<(std::ostream& os, const test_step_started& msg)
+{
+    os << msg.to_string();
+
+    return os;
+}
+
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/timestamp.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/timestamp.cpp
index bb34cf87..9c6dba60 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/timestamp.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/timestamp.cpp
@@ -1,6 +1,6 @@
 #include <sstream>
 
-#include <cucumber/utils.hpp>
+#include <cucumber/messages/utils.hpp>
 #include <cucumber/messages/timestamp.hpp>
 
 namespace cucumber::messages {
@@ -11,11 +11,19 @@ timestamp::to_string() const
     std::ostringstream oss;
 
     oss
-        << "seconds=" << seconds
-        << ", nanos=" << nanos
+    << "seconds=" << seconds
+    << ", nanos=" << nanos
         ;
 
     return oss.str();
 }
 
+std::ostream&
+operator<<(std::ostream& os, const timestamp& msg)
+{
+    os << msg.to_string();
+
+    return os;
+}
+
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/undefined_parameter_type.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/undefined_parameter_type.cpp
index d88f1a62..d068c70a 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/undefined_parameter_type.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/undefined_parameter_type.cpp
@@ -1,6 +1,6 @@
 #include <sstream>
 
-#include <cucumber/utils.hpp>
+#include <cucumber/messages/utils.hpp>
 #include <cucumber/messages/undefined_parameter_type.hpp>
 
 namespace cucumber::messages {
@@ -11,11 +11,19 @@ undefined_parameter_type::to_string() const
     std::ostringstream oss;
 
     oss
-        << "expression=" << expression
-        << ", name=" << name
+    << "expression=" << expression
+    << ", name=" << name
         ;
 
     return oss.str();
 }
 
+std::ostream&
+operator<<(std::ostream& os, const undefined_parameter_type& msg)
+{
+    os << msg.to_string();
+
+    return os;
+}
+
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/utils.hpp b/cpp/src/lib/cucumber-messages/cucumber/messages/utils.hpp
new file mode 100644
index 00000000..0dfb0678
--- /dev/null
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/utils.hpp
@@ -0,0 +1,23 @@
+#pragma once
+
+#include <ostream>
+#include <vector>
+
+namespace cucumber::messages {
+
+template <typename Msg>
+std::ostream&
+operator<<(std::ostream& os, const std::vector<Msg>& msgs)
+{
+    os << '[';
+
+    for (std::size_t i = 0; i < msgs.size(); ++i) {
+        os << (i > 0 ? ", " : "") << msgs[i];
+    }
+
+    os << ']';
+
+    return os;
+}
+
+}
diff --git a/cpp/src/lib/cucumber-messages/cucumber/utils.hpp b/cpp/src/lib/cucumber-messages/cucumber/utils.hpp
deleted file mode 100644
index 6cd673b9..00000000
--- a/cpp/src/lib/cucumber-messages/cucumber/utils.hpp
+++ /dev/null
@@ -1,26 +0,0 @@
-#pragma once
-
-#include <string>
-#include <sstream>
-#include <vector>
-
-namespace cucumber {
-
-template <typename Msg>
-std::string
-to_string(const std::vector<Msg>& msgs)
-{
-    std::ostringstream oss;
-
-    oss << '[';
-
-    for (std::size_t i = 0; i < msgs.size(); ++i) {
-        oss << (i > 0 ? ", " : "") << msgs[i];
-    }
-
-    oss << ']';
-
-    return oss.str();
-}
-
-}
diff --git a/jsonschema/scripts/templates/cpp.hpp.erb b/jsonschema/scripts/templates/cpp.hpp.erb
index 6d6b0efc..0d5d0a1e 100644
--- a/jsonschema/scripts/templates/cpp.hpp.erb
+++ b/jsonschema/scripts/templates/cpp.hpp.erb
@@ -4,8 +4,7 @@
 #pragma once
 
 #include <vector>
-
-#include <cucumber/message.hpp>
+#include <string>
 <%-
     incs = []
     schema['properties'].each do |property_name, property|
@@ -38,7 +37,7 @@ namespace cucumber::messages {
 //
 // Generated code
 
-struct <%= myclass %> : cucumber::message
+struct <%= myclass %>
 {
   <%- schema['properties'].each do |property_name, property| -%>
     <%- type = underscore(type_for(class_name(key), property_name, property)) -%>
@@ -58,11 +57,14 @@ struct <%= myclass %> : cucumber::message
     std::string to_string() const;
 };
 
+std::ostream&
+operator<<(std::ostream& os, const <%= myclass %>& msg);
+
 }
 <%= myclass %>.cpp
 #include <sstream>
 
-#include <cucumber/utils.hpp>
+#include <cucumber/messages/utils.hpp>
 #include <cucumber/messages/<%= myclass %>.hpp>
 
 namespace cucumber::messages {
@@ -75,16 +77,19 @@ std::string
     oss
     <%- schema['properties'].each_with_index do |(property_name, property), index| -%>
     <%- type = underscore(type_for(class_name(key), property_name, property)) -%>
-    <%- std_vec = /std::vector<std::.+>/.match(type) -%>
-    <%- if std_vec -%>
-        << "<%= index == 0 ? '' : ', '%><%= underscore(property_name) %>=" << cucumber::to_string(<%= underscore(property_name) %>)
-    <%- else -%>
-        << "<%= index == 0 ? '' : ', '%><%= underscore(property_name) %>=" << <%= underscore(property_name) %>
-    <%- end -%>
+    << "<%= index == 0 ? '' : ', '%><%= underscore(property_name) %>=" << <%= underscore(property_name) %>
     <%- end -%>
         ;
 
     return oss.str();
 }
 
+std::ostream&
+operator<<(std::ostream& os, const <%= myclass %>& msg)
+{
+    os << msg.to_string();
+
+    return os;
+}
+
 }<%- end -%>

From b23af981def586974ff15e4d694c35cd1ef5d34a Mon Sep 17 00:00:00 2001
From: Remy Chibois <rcs@weez-u-welding.com>
Date: Tue, 9 May 2023 18:20:01 +0200
Subject: [PATCH 10/26] chore: added nlohmann json library

---
 cpp/include/cucumber/messages/attachment.hpp  |     6 +
 cpp/include/cucumber/messages/background.hpp  |     6 +
 cpp/include/cucumber/messages/ci.hpp          |     6 +
 cpp/include/cucumber/messages/comment.hpp     |     6 +
 cpp/include/cucumber/messages/data_table.hpp  |     6 +
 cpp/include/cucumber/messages/doc_string.hpp  |     6 +
 cpp/include/cucumber/messages/duration.hpp    |     6 +
 cpp/include/cucumber/messages/envelope.hpp    |     6 +
 cpp/include/cucumber/messages/examples.hpp    |     6 +
 cpp/include/cucumber/messages/exception.hpp   |     6 +
 cpp/include/cucumber/messages/feature.hpp     |     6 +
 .../cucumber/messages/feature_child.hpp       |     6 +
 .../cucumber/messages/gherkin_document.hpp    |     6 +
 cpp/include/cucumber/messages/git.hpp         |     6 +
 cpp/include/cucumber/messages/group.hpp       |     6 +
 cpp/include/cucumber/messages/hook.hpp        |     6 +
 cpp/include/cucumber/messages/java_method.hpp |     6 +
 .../messages/java_stack_trace_element.hpp     |     6 +
 cpp/include/cucumber/messages/location.hpp    |     6 +
 cpp/include/cucumber/messages/meta.hpp        |     6 +
 .../cucumber/messages/parameter_type.hpp      |     6 +
 cpp/include/cucumber/messages/parse_error.hpp |     6 +
 cpp/include/cucumber/messages/pickle.hpp      |     6 +
 .../cucumber/messages/pickle_doc_string.hpp   |     6 +
 cpp/include/cucumber/messages/pickle_step.hpp |     6 +
 .../messages/pickle_step_argument.hpp         |     6 +
 .../cucumber/messages/pickle_table.hpp        |     6 +
 .../cucumber/messages/pickle_table_cell.hpp   |     6 +
 .../cucumber/messages/pickle_table_row.hpp    |     6 +
 cpp/include/cucumber/messages/pickle_tag.hpp  |     6 +
 cpp/include/cucumber/messages/product.hpp     |     6 +
 cpp/include/cucumber/messages/rule.hpp        |     6 +
 cpp/include/cucumber/messages/rule_child.hpp  |     6 +
 cpp/include/cucumber/messages/scenario.hpp    |     6 +
 cpp/include/cucumber/messages/source.hpp      |     6 +
 .../cucumber/messages/source_reference.hpp    |     6 +
 cpp/include/cucumber/messages/step.hpp        |     6 +
 .../cucumber/messages/step_definition.hpp     |     6 +
 .../messages/step_definition_pattern.hpp      |     6 +
 .../cucumber/messages/step_match_argument.hpp |     6 +
 .../messages/step_match_arguments_list.hpp    |     6 +
 cpp/include/cucumber/messages/table_cell.hpp  |     6 +
 cpp/include/cucumber/messages/table_row.hpp   |     6 +
 cpp/include/cucumber/messages/tag.hpp         |     6 +
 cpp/include/cucumber/messages/test_case.hpp   |     6 +
 .../cucumber/messages/test_case_finished.hpp  |     6 +
 .../cucumber/messages/test_case_started.hpp   |     6 +
 .../cucumber/messages/test_run_finished.hpp   |     6 +
 .../cucumber/messages/test_run_started.hpp    |     6 +
 cpp/include/cucumber/messages/test_step.hpp   |     6 +
 .../cucumber/messages/test_step_finished.hpp  |     6 +
 .../cucumber/messages/test_step_result.hpp    |     6 +
 .../cucumber/messages/test_step_started.hpp   |     6 +
 cpp/include/cucumber/messages/timestamp.hpp   |     6 +
 .../messages/undefined_parameter_type.hpp     |     6 +
 cpp/include/nlohmann/json.hpp                 | 24674 ++++++++++++++++
 .../cucumber/messages/attachment.cpp          |    14 +
 .../cucumber/messages/background.cpp          |    12 +
 .../cucumber/messages/ci.cpp                  |    10 +
 .../cucumber/messages/comment.cpp             |     8 +
 .../cucumber/messages/data_table.cpp          |     8 +
 .../cucumber/messages/doc_string.cpp          |    10 +
 .../cucumber/messages/duration.cpp            |     8 +
 .../cucumber/messages/envelope.cpp            |    23 +
 .../cucumber/messages/examples.cpp            |    14 +
 .../cucumber/messages/exception.cpp           |     8 +
 .../cucumber/messages/feature.cpp             |    13 +
 .../cucumber/messages/feature_child.cpp       |     9 +
 .../cucumber/messages/gherkin_document.cpp    |     9 +
 .../cucumber/messages/git.cpp                 |    10 +
 .../cucumber/messages/group.cpp               |     9 +
 .../cucumber/messages/hook.cpp                |    10 +
 .../cucumber/messages/java_method.cpp         |     9 +
 .../messages/java_stack_trace_element.cpp     |     9 +
 .../cucumber/messages/location.cpp            |     8 +
 .../cucumber/messages/meta.cpp                |    12 +
 .../cucumber/messages/parameter_type.cpp      |    12 +
 .../cucumber/messages/parse_error.cpp         |     8 +
 .../cucumber/messages/pickle.cpp              |    13 +
 .../cucumber/messages/pickle_doc_string.cpp   |     8 +
 .../cucumber/messages/pickle_step.cpp         |    11 +
 .../messages/pickle_step_argument.cpp         |     8 +
 .../cucumber/messages/pickle_table.cpp        |     7 +
 .../cucumber/messages/pickle_table_cell.cpp   |     7 +
 .../cucumber/messages/pickle_table_row.cpp    |     7 +
 .../cucumber/messages/pickle_tag.cpp          |     8 +
 .../cucumber/messages/product.cpp             |     8 +
 .../cucumber/messages/rule.cpp                |    13 +
 .../cucumber/messages/rule_child.cpp          |     8 +
 .../cucumber/messages/scenario.cpp            |    14 +
 .../cucumber/messages/source.cpp              |     9 +
 .../cucumber/messages/source_reference.cpp    |    10 +
 .../cucumber/messages/step.cpp                |    13 +
 .../cucumber/messages/step_definition.cpp     |     9 +
 .../messages/step_definition_pattern.cpp      |     8 +
 .../cucumber/messages/step_match_argument.cpp |     8 +
 .../messages/step_match_arguments_list.cpp    |     7 +
 .../cucumber/messages/table_cell.cpp          |     8 +
 .../cucumber/messages/table_row.cpp           |     9 +
 .../cucumber/messages/tag.cpp                 |     9 +
 .../cucumber/messages/test_case.cpp           |     9 +
 .../cucumber/messages/test_case_finished.cpp  |     9 +
 .../cucumber/messages/test_case_started.cpp   |    11 +
 .../cucumber/messages/test_run_finished.cpp   |    10 +
 .../cucumber/messages/test_run_started.cpp    |     7 +
 .../cucumber/messages/test_step.cpp           |    11 +
 .../cucumber/messages/test_step_finished.cpp  |    10 +
 .../cucumber/messages/test_step_result.cpp    |    10 +
 .../cucumber/messages/test_step_started.cpp   |     9 +
 .../cucumber/messages/timestamp.cpp           |     8 +
 .../messages/undefined_parameter_type.cpp     |     8 +
 jsonschema/scripts/templates/cpp.hpp.erb      |    24 +
 112 files changed, 25565 insertions(+)
 create mode 100644 cpp/include/nlohmann/json.hpp

diff --git a/cpp/include/cucumber/messages/attachment.hpp b/cpp/include/cucumber/messages/attachment.hpp
index 4e4166fa..f550990a 100644
--- a/cpp/include/cucumber/messages/attachment.hpp
+++ b/cpp/include/cucumber/messages/attachment.hpp
@@ -3,6 +3,8 @@
 #include <vector>
 #include <string>
 
+#include <nlohmann/json.hpp>
+
 #include <cucumber/messages/attachment_content_encoding.hpp>
 #include <cucumber/messages/source.hpp>
 
@@ -43,4 +45,8 @@ struct attachment
 std::ostream&
 operator<<(std::ostream& os, const attachment& msg);
 
+using json = nlohmann::json;
+
+void to_json(json& j, const attachment& m);
+
 }
diff --git a/cpp/include/cucumber/messages/background.hpp b/cpp/include/cucumber/messages/background.hpp
index cdbd6729..631ee716 100644
--- a/cpp/include/cucumber/messages/background.hpp
+++ b/cpp/include/cucumber/messages/background.hpp
@@ -3,6 +3,8 @@
 #include <vector>
 #include <string>
 
+#include <nlohmann/json.hpp>
+
 #include <cucumber/messages/location.hpp>
 #include <cucumber/messages/step.hpp>
 
@@ -29,4 +31,8 @@ struct background
 std::ostream&
 operator<<(std::ostream& os, const background& msg);
 
+using json = nlohmann::json;
+
+void to_json(json& j, const background& m);
+
 }
diff --git a/cpp/include/cucumber/messages/ci.hpp b/cpp/include/cucumber/messages/ci.hpp
index 446d1741..fbafed83 100644
--- a/cpp/include/cucumber/messages/ci.hpp
+++ b/cpp/include/cucumber/messages/ci.hpp
@@ -3,6 +3,8 @@
 #include <vector>
 #include <string>
 
+#include <nlohmann/json.hpp>
+
 #include <cucumber/messages/git.hpp>
 
 namespace cucumber::messages {
@@ -28,4 +30,8 @@ struct ci
 std::ostream&
 operator<<(std::ostream& os, const ci& msg);
 
+using json = nlohmann::json;
+
+void to_json(json& j, const ci& m);
+
 }
diff --git a/cpp/include/cucumber/messages/comment.hpp b/cpp/include/cucumber/messages/comment.hpp
index cef7a694..d5a452e2 100644
--- a/cpp/include/cucumber/messages/comment.hpp
+++ b/cpp/include/cucumber/messages/comment.hpp
@@ -3,6 +3,8 @@
 #include <vector>
 #include <string>
 
+#include <nlohmann/json.hpp>
+
 #include <cucumber/messages/location.hpp>
 
 namespace cucumber::messages {
@@ -26,4 +28,8 @@ struct comment
 std::ostream&
 operator<<(std::ostream& os, const comment& msg);
 
+using json = nlohmann::json;
+
+void to_json(json& j, const comment& m);
+
 }
diff --git a/cpp/include/cucumber/messages/data_table.hpp b/cpp/include/cucumber/messages/data_table.hpp
index 192fa03c..c880e32b 100644
--- a/cpp/include/cucumber/messages/data_table.hpp
+++ b/cpp/include/cucumber/messages/data_table.hpp
@@ -3,6 +3,8 @@
 #include <vector>
 #include <string>
 
+#include <nlohmann/json.hpp>
+
 #include <cucumber/messages/location.hpp>
 #include <cucumber/messages/table_row.hpp>
 
@@ -25,4 +27,8 @@ struct data_table
 std::ostream&
 operator<<(std::ostream& os, const data_table& msg);
 
+using json = nlohmann::json;
+
+void to_json(json& j, const data_table& m);
+
 }
diff --git a/cpp/include/cucumber/messages/doc_string.hpp b/cpp/include/cucumber/messages/doc_string.hpp
index 65df7ba5..874cf96a 100644
--- a/cpp/include/cucumber/messages/doc_string.hpp
+++ b/cpp/include/cucumber/messages/doc_string.hpp
@@ -3,6 +3,8 @@
 #include <vector>
 #include <string>
 
+#include <nlohmann/json.hpp>
+
 #include <cucumber/messages/location.hpp>
 
 namespace cucumber::messages {
@@ -26,4 +28,8 @@ struct doc_string
 std::ostream&
 operator<<(std::ostream& os, const doc_string& msg);
 
+using json = nlohmann::json;
+
+void to_json(json& j, const doc_string& m);
+
 }
diff --git a/cpp/include/cucumber/messages/duration.hpp b/cpp/include/cucumber/messages/duration.hpp
index a72ba504..67663183 100644
--- a/cpp/include/cucumber/messages/duration.hpp
+++ b/cpp/include/cucumber/messages/duration.hpp
@@ -3,6 +3,8 @@
 #include <vector>
 #include <string>
 
+#include <nlohmann/json.hpp>
+
 namespace cucumber::messages {
 
 //
@@ -25,4 +27,8 @@ struct duration
 std::ostream&
 operator<<(std::ostream& os, const duration& msg);
 
+using json = nlohmann::json;
+
+void to_json(json& j, const duration& m);
+
 }
diff --git a/cpp/include/cucumber/messages/envelope.hpp b/cpp/include/cucumber/messages/envelope.hpp
index f96db3c9..82404224 100644
--- a/cpp/include/cucumber/messages/envelope.hpp
+++ b/cpp/include/cucumber/messages/envelope.hpp
@@ -3,6 +3,8 @@
 #include <vector>
 #include <string>
 
+#include <nlohmann/json.hpp>
+
 #include <cucumber/messages/attachment.hpp>
 #include <cucumber/messages/gherkin_document.hpp>
 #include <cucumber/messages/hook.hpp>
@@ -62,4 +64,8 @@ struct envelope
 std::ostream&
 operator<<(std::ostream& os, const envelope& msg);
 
+using json = nlohmann::json;
+
+void to_json(json& j, const envelope& m);
+
 }
diff --git a/cpp/include/cucumber/messages/examples.hpp b/cpp/include/cucumber/messages/examples.hpp
index 6dc43f66..82e79174 100644
--- a/cpp/include/cucumber/messages/examples.hpp
+++ b/cpp/include/cucumber/messages/examples.hpp
@@ -3,6 +3,8 @@
 #include <vector>
 #include <string>
 
+#include <nlohmann/json.hpp>
+
 #include <cucumber/messages/location.hpp>
 #include <cucumber/messages/tag.hpp>
 #include <cucumber/messages/table_row.hpp>
@@ -33,4 +35,8 @@ struct examples
 std::ostream&
 operator<<(std::ostream& os, const examples& msg);
 
+using json = nlohmann::json;
+
+void to_json(json& j, const examples& m);
+
 }
diff --git a/cpp/include/cucumber/messages/exception.hpp b/cpp/include/cucumber/messages/exception.hpp
index cf4326b6..d9c1c108 100644
--- a/cpp/include/cucumber/messages/exception.hpp
+++ b/cpp/include/cucumber/messages/exception.hpp
@@ -3,6 +3,8 @@
 #include <vector>
 #include <string>
 
+#include <nlohmann/json.hpp>
+
 namespace cucumber::messages {
 
 //
@@ -24,4 +26,8 @@ struct exception
 std::ostream&
 operator<<(std::ostream& os, const exception& msg);
 
+using json = nlohmann::json;
+
+void to_json(json& j, const exception& m);
+
 }
diff --git a/cpp/include/cucumber/messages/feature.hpp b/cpp/include/cucumber/messages/feature.hpp
index a390253d..3a381732 100644
--- a/cpp/include/cucumber/messages/feature.hpp
+++ b/cpp/include/cucumber/messages/feature.hpp
@@ -3,6 +3,8 @@
 #include <vector>
 #include <string>
 
+#include <nlohmann/json.hpp>
+
 #include <cucumber/messages/location.hpp>
 #include <cucumber/messages/tag.hpp>
 #include <cucumber/messages/feature_child.hpp>
@@ -31,4 +33,8 @@ struct feature
 std::ostream&
 operator<<(std::ostream& os, const feature& msg);
 
+using json = nlohmann::json;
+
+void to_json(json& j, const feature& m);
+
 }
diff --git a/cpp/include/cucumber/messages/feature_child.hpp b/cpp/include/cucumber/messages/feature_child.hpp
index dec5e234..622501f2 100644
--- a/cpp/include/cucumber/messages/feature_child.hpp
+++ b/cpp/include/cucumber/messages/feature_child.hpp
@@ -3,6 +3,8 @@
 #include <vector>
 #include <string>
 
+#include <nlohmann/json.hpp>
+
 #include <cucumber/messages/rule.hpp>
 #include <cucumber/messages/background.hpp>
 #include <cucumber/messages/scenario.hpp>
@@ -29,4 +31,8 @@ struct feature_child
 std::ostream&
 operator<<(std::ostream& os, const feature_child& msg);
 
+using json = nlohmann::json;
+
+void to_json(json& j, const feature_child& m);
+
 }
diff --git a/cpp/include/cucumber/messages/gherkin_document.hpp b/cpp/include/cucumber/messages/gherkin_document.hpp
index b8bdf050..c5e3a890 100644
--- a/cpp/include/cucumber/messages/gherkin_document.hpp
+++ b/cpp/include/cucumber/messages/gherkin_document.hpp
@@ -3,6 +3,8 @@
 #include <vector>
 #include <string>
 
+#include <nlohmann/json.hpp>
+
 #include <cucumber/messages/feature.hpp>
 #include <cucumber/messages/comment.hpp>
 
@@ -33,4 +35,8 @@ struct gherkin_document
 std::ostream&
 operator<<(std::ostream& os, const gherkin_document& msg);
 
+using json = nlohmann::json;
+
+void to_json(json& j, const gherkin_document& m);
+
 }
diff --git a/cpp/include/cucumber/messages/git.hpp b/cpp/include/cucumber/messages/git.hpp
index 4de134b6..329547dd 100644
--- a/cpp/include/cucumber/messages/git.hpp
+++ b/cpp/include/cucumber/messages/git.hpp
@@ -3,6 +3,8 @@
 #include <vector>
 #include <string>
 
+#include <nlohmann/json.hpp>
+
 namespace cucumber::messages {
 
 //
@@ -27,4 +29,8 @@ struct git
 std::ostream&
 operator<<(std::ostream& os, const git& msg);
 
+using json = nlohmann::json;
+
+void to_json(json& j, const git& m);
+
 }
diff --git a/cpp/include/cucumber/messages/group.hpp b/cpp/include/cucumber/messages/group.hpp
index bc971faa..e0ff88a6 100644
--- a/cpp/include/cucumber/messages/group.hpp
+++ b/cpp/include/cucumber/messages/group.hpp
@@ -3,6 +3,8 @@
 #include <vector>
 #include <string>
 
+#include <nlohmann/json.hpp>
+
 #include <cucumber/messages/group.hpp>
 
 namespace cucumber::messages {
@@ -25,4 +27,8 @@ struct group
 std::ostream&
 operator<<(std::ostream& os, const group& msg);
 
+using json = nlohmann::json;
+
+void to_json(json& j, const group& m);
+
 }
diff --git a/cpp/include/cucumber/messages/hook.hpp b/cpp/include/cucumber/messages/hook.hpp
index 4f1fad10..628b417d 100644
--- a/cpp/include/cucumber/messages/hook.hpp
+++ b/cpp/include/cucumber/messages/hook.hpp
@@ -3,6 +3,8 @@
 #include <vector>
 #include <string>
 
+#include <nlohmann/json.hpp>
+
 #include <cucumber/messages/source_reference.hpp>
 
 namespace cucumber::messages {
@@ -26,4 +28,8 @@ struct hook
 std::ostream&
 operator<<(std::ostream& os, const hook& msg);
 
+using json = nlohmann::json;
+
+void to_json(json& j, const hook& m);
+
 }
diff --git a/cpp/include/cucumber/messages/java_method.hpp b/cpp/include/cucumber/messages/java_method.hpp
index acf03c8a..44143d8d 100644
--- a/cpp/include/cucumber/messages/java_method.hpp
+++ b/cpp/include/cucumber/messages/java_method.hpp
@@ -3,6 +3,8 @@
 #include <vector>
 #include <string>
 
+#include <nlohmann/json.hpp>
+
 namespace cucumber::messages {
 
 //
@@ -23,4 +25,8 @@ struct java_method
 std::ostream&
 operator<<(std::ostream& os, const java_method& msg);
 
+using json = nlohmann::json;
+
+void to_json(json& j, const java_method& m);
+
 }
diff --git a/cpp/include/cucumber/messages/java_stack_trace_element.hpp b/cpp/include/cucumber/messages/java_stack_trace_element.hpp
index 7f3104c3..5833c837 100644
--- a/cpp/include/cucumber/messages/java_stack_trace_element.hpp
+++ b/cpp/include/cucumber/messages/java_stack_trace_element.hpp
@@ -3,6 +3,8 @@
 #include <vector>
 #include <string>
 
+#include <nlohmann/json.hpp>
+
 namespace cucumber::messages {
 
 //
@@ -23,4 +25,8 @@ struct java_stack_trace_element
 std::ostream&
 operator<<(std::ostream& os, const java_stack_trace_element& msg);
 
+using json = nlohmann::json;
+
+void to_json(json& j, const java_stack_trace_element& m);
+
 }
diff --git a/cpp/include/cucumber/messages/location.hpp b/cpp/include/cucumber/messages/location.hpp
index 4221bf0d..4addc190 100644
--- a/cpp/include/cucumber/messages/location.hpp
+++ b/cpp/include/cucumber/messages/location.hpp
@@ -3,6 +3,8 @@
 #include <vector>
 #include <string>
 
+#include <nlohmann/json.hpp>
+
 namespace cucumber::messages {
 
 //
@@ -24,4 +26,8 @@ struct location
 std::ostream&
 operator<<(std::ostream& os, const location& msg);
 
+using json = nlohmann::json;
+
+void to_json(json& j, const location& m);
+
 }
diff --git a/cpp/include/cucumber/messages/meta.hpp b/cpp/include/cucumber/messages/meta.hpp
index 1afa05bf..143feff8 100644
--- a/cpp/include/cucumber/messages/meta.hpp
+++ b/cpp/include/cucumber/messages/meta.hpp
@@ -3,6 +3,8 @@
 #include <vector>
 #include <string>
 
+#include <nlohmann/json.hpp>
+
 #include <cucumber/messages/product.hpp>
 #include <cucumber/messages/product.hpp>
 #include <cucumber/messages/product.hpp>
@@ -35,4 +37,8 @@ struct meta
 std::ostream&
 operator<<(std::ostream& os, const meta& msg);
 
+using json = nlohmann::json;
+
+void to_json(json& j, const meta& m);
+
 }
diff --git a/cpp/include/cucumber/messages/parameter_type.hpp b/cpp/include/cucumber/messages/parameter_type.hpp
index 1a16e57e..a30cc9be 100644
--- a/cpp/include/cucumber/messages/parameter_type.hpp
+++ b/cpp/include/cucumber/messages/parameter_type.hpp
@@ -3,6 +3,8 @@
 #include <vector>
 #include <string>
 
+#include <nlohmann/json.hpp>
+
 #include <cucumber/messages/source_reference.hpp>
 
 namespace cucumber::messages {
@@ -28,4 +30,8 @@ struct parameter_type
 std::ostream&
 operator<<(std::ostream& os, const parameter_type& msg);
 
+using json = nlohmann::json;
+
+void to_json(json& j, const parameter_type& m);
+
 }
diff --git a/cpp/include/cucumber/messages/parse_error.hpp b/cpp/include/cucumber/messages/parse_error.hpp
index 01949b73..bd369290 100644
--- a/cpp/include/cucumber/messages/parse_error.hpp
+++ b/cpp/include/cucumber/messages/parse_error.hpp
@@ -3,6 +3,8 @@
 #include <vector>
 #include <string>
 
+#include <nlohmann/json.hpp>
+
 #include <cucumber/messages/source_reference.hpp>
 
 namespace cucumber::messages {
@@ -24,4 +26,8 @@ struct parse_error
 std::ostream&
 operator<<(std::ostream& os, const parse_error& msg);
 
+using json = nlohmann::json;
+
+void to_json(json& j, const parse_error& m);
+
 }
diff --git a/cpp/include/cucumber/messages/pickle.hpp b/cpp/include/cucumber/messages/pickle.hpp
index 46fdf7ff..20b5fe35 100644
--- a/cpp/include/cucumber/messages/pickle.hpp
+++ b/cpp/include/cucumber/messages/pickle.hpp
@@ -3,6 +3,8 @@
 #include <vector>
 #include <string>
 
+#include <nlohmann/json.hpp>
+
 #include <cucumber/messages/pickle_step.hpp>
 #include <cucumber/messages/pickle_tag.hpp>
 
@@ -43,4 +45,8 @@ struct pickle
 std::ostream&
 operator<<(std::ostream& os, const pickle& msg);
 
+using json = nlohmann::json;
+
+void to_json(json& j, const pickle& m);
+
 }
diff --git a/cpp/include/cucumber/messages/pickle_doc_string.hpp b/cpp/include/cucumber/messages/pickle_doc_string.hpp
index fe474f3e..2e9a59f7 100644
--- a/cpp/include/cucumber/messages/pickle_doc_string.hpp
+++ b/cpp/include/cucumber/messages/pickle_doc_string.hpp
@@ -3,6 +3,8 @@
 #include <vector>
 #include <string>
 
+#include <nlohmann/json.hpp>
+
 namespace cucumber::messages {
 
 //
@@ -22,4 +24,8 @@ struct pickle_doc_string
 std::ostream&
 operator<<(std::ostream& os, const pickle_doc_string& msg);
 
+using json = nlohmann::json;
+
+void to_json(json& j, const pickle_doc_string& m);
+
 }
diff --git a/cpp/include/cucumber/messages/pickle_step.hpp b/cpp/include/cucumber/messages/pickle_step.hpp
index 33d117b1..2fb52c83 100644
--- a/cpp/include/cucumber/messages/pickle_step.hpp
+++ b/cpp/include/cucumber/messages/pickle_step.hpp
@@ -3,6 +3,8 @@
 #include <vector>
 #include <string>
 
+#include <nlohmann/json.hpp>
+
 #include <cucumber/messages/pickle_step_argument.hpp>
 #include <cucumber/messages/pickle_step_type.hpp>
 
@@ -30,4 +32,8 @@ struct pickle_step
 std::ostream&
 operator<<(std::ostream& os, const pickle_step& msg);
 
+using json = nlohmann::json;
+
+void to_json(json& j, const pickle_step& m);
+
 }
diff --git a/cpp/include/cucumber/messages/pickle_step_argument.hpp b/cpp/include/cucumber/messages/pickle_step_argument.hpp
index 6f59690b..a5dd8734 100644
--- a/cpp/include/cucumber/messages/pickle_step_argument.hpp
+++ b/cpp/include/cucumber/messages/pickle_step_argument.hpp
@@ -3,6 +3,8 @@
 #include <vector>
 #include <string>
 
+#include <nlohmann/json.hpp>
+
 #include <cucumber/messages/pickle_doc_string.hpp>
 #include <cucumber/messages/pickle_table.hpp>
 
@@ -27,4 +29,8 @@ struct pickle_step_argument
 std::ostream&
 operator<<(std::ostream& os, const pickle_step_argument& msg);
 
+using json = nlohmann::json;
+
+void to_json(json& j, const pickle_step_argument& m);
+
 }
diff --git a/cpp/include/cucumber/messages/pickle_table.hpp b/cpp/include/cucumber/messages/pickle_table.hpp
index 5dee89e2..dba0ac4a 100644
--- a/cpp/include/cucumber/messages/pickle_table.hpp
+++ b/cpp/include/cucumber/messages/pickle_table.hpp
@@ -3,6 +3,8 @@
 #include <vector>
 #include <string>
 
+#include <nlohmann/json.hpp>
+
 #include <cucumber/messages/pickle_table_row.hpp>
 
 namespace cucumber::messages {
@@ -23,4 +25,8 @@ struct pickle_table
 std::ostream&
 operator<<(std::ostream& os, const pickle_table& msg);
 
+using json = nlohmann::json;
+
+void to_json(json& j, const pickle_table& m);
+
 }
diff --git a/cpp/include/cucumber/messages/pickle_table_cell.hpp b/cpp/include/cucumber/messages/pickle_table_cell.hpp
index c26e2c3d..3c20ff73 100644
--- a/cpp/include/cucumber/messages/pickle_table_cell.hpp
+++ b/cpp/include/cucumber/messages/pickle_table_cell.hpp
@@ -3,6 +3,8 @@
 #include <vector>
 #include <string>
 
+#include <nlohmann/json.hpp>
+
 namespace cucumber::messages {
 
 //
@@ -21,4 +23,8 @@ struct pickle_table_cell
 std::ostream&
 operator<<(std::ostream& os, const pickle_table_cell& msg);
 
+using json = nlohmann::json;
+
+void to_json(json& j, const pickle_table_cell& m);
+
 }
diff --git a/cpp/include/cucumber/messages/pickle_table_row.hpp b/cpp/include/cucumber/messages/pickle_table_row.hpp
index 5942bfae..f8b469ed 100644
--- a/cpp/include/cucumber/messages/pickle_table_row.hpp
+++ b/cpp/include/cucumber/messages/pickle_table_row.hpp
@@ -3,6 +3,8 @@
 #include <vector>
 #include <string>
 
+#include <nlohmann/json.hpp>
+
 #include <cucumber/messages/pickle_table_cell.hpp>
 
 namespace cucumber::messages {
@@ -23,4 +25,8 @@ struct pickle_table_row
 std::ostream&
 operator<<(std::ostream& os, const pickle_table_row& msg);
 
+using json = nlohmann::json;
+
+void to_json(json& j, const pickle_table_row& m);
+
 }
diff --git a/cpp/include/cucumber/messages/pickle_tag.hpp b/cpp/include/cucumber/messages/pickle_tag.hpp
index 355c4cb7..4016b62f 100644
--- a/cpp/include/cucumber/messages/pickle_tag.hpp
+++ b/cpp/include/cucumber/messages/pickle_tag.hpp
@@ -3,6 +3,8 @@
 #include <vector>
 #include <string>
 
+#include <nlohmann/json.hpp>
+
 namespace cucumber::messages {
 
 //
@@ -24,4 +26,8 @@ struct pickle_tag
 std::ostream&
 operator<<(std::ostream& os, const pickle_tag& msg);
 
+using json = nlohmann::json;
+
+void to_json(json& j, const pickle_tag& m);
+
 }
diff --git a/cpp/include/cucumber/messages/product.hpp b/cpp/include/cucumber/messages/product.hpp
index c5a90bfa..e247a66b 100644
--- a/cpp/include/cucumber/messages/product.hpp
+++ b/cpp/include/cucumber/messages/product.hpp
@@ -3,6 +3,8 @@
 #include <vector>
 #include <string>
 
+#include <nlohmann/json.hpp>
+
 namespace cucumber::messages {
 
 //
@@ -24,4 +26,8 @@ struct product
 std::ostream&
 operator<<(std::ostream& os, const product& msg);
 
+using json = nlohmann::json;
+
+void to_json(json& j, const product& m);
+
 }
diff --git a/cpp/include/cucumber/messages/rule.hpp b/cpp/include/cucumber/messages/rule.hpp
index 8675de74..89cc8625 100644
--- a/cpp/include/cucumber/messages/rule.hpp
+++ b/cpp/include/cucumber/messages/rule.hpp
@@ -3,6 +3,8 @@
 #include <vector>
 #include <string>
 
+#include <nlohmann/json.hpp>
+
 #include <cucumber/messages/location.hpp>
 #include <cucumber/messages/tag.hpp>
 #include <cucumber/messages/rule_child.hpp>
@@ -31,4 +33,8 @@ struct rule
 std::ostream&
 operator<<(std::ostream& os, const rule& msg);
 
+using json = nlohmann::json;
+
+void to_json(json& j, const rule& m);
+
 }
diff --git a/cpp/include/cucumber/messages/rule_child.hpp b/cpp/include/cucumber/messages/rule_child.hpp
index 3d90a2db..44936ef4 100644
--- a/cpp/include/cucumber/messages/rule_child.hpp
+++ b/cpp/include/cucumber/messages/rule_child.hpp
@@ -3,6 +3,8 @@
 #include <vector>
 #include <string>
 
+#include <nlohmann/json.hpp>
+
 #include <cucumber/messages/background.hpp>
 #include <cucumber/messages/scenario.hpp>
 
@@ -27,4 +29,8 @@ struct rule_child
 std::ostream&
 operator<<(std::ostream& os, const rule_child& msg);
 
+using json = nlohmann::json;
+
+void to_json(json& j, const rule_child& m);
+
 }
diff --git a/cpp/include/cucumber/messages/scenario.hpp b/cpp/include/cucumber/messages/scenario.hpp
index 62e5c489..84a72956 100644
--- a/cpp/include/cucumber/messages/scenario.hpp
+++ b/cpp/include/cucumber/messages/scenario.hpp
@@ -3,6 +3,8 @@
 #include <vector>
 #include <string>
 
+#include <nlohmann/json.hpp>
+
 #include <cucumber/messages/location.hpp>
 #include <cucumber/messages/tag.hpp>
 #include <cucumber/messages/step.hpp>
@@ -33,4 +35,8 @@ struct scenario
 std::ostream&
 operator<<(std::ostream& os, const scenario& msg);
 
+using json = nlohmann::json;
+
+void to_json(json& j, const scenario& m);
+
 }
diff --git a/cpp/include/cucumber/messages/source.hpp b/cpp/include/cucumber/messages/source.hpp
index 30f9e786..57aed3fb 100644
--- a/cpp/include/cucumber/messages/source.hpp
+++ b/cpp/include/cucumber/messages/source.hpp
@@ -3,6 +3,8 @@
 #include <vector>
 #include <string>
 
+#include <nlohmann/json.hpp>
+
 #include <cucumber/messages/source_media_type.hpp>
 
 namespace cucumber::messages {
@@ -29,4 +31,8 @@ struct source
 std::ostream&
 operator<<(std::ostream& os, const source& msg);
 
+using json = nlohmann::json;
+
+void to_json(json& j, const source& m);
+
 }
diff --git a/cpp/include/cucumber/messages/source_reference.hpp b/cpp/include/cucumber/messages/source_reference.hpp
index 46366bdb..b0469d28 100644
--- a/cpp/include/cucumber/messages/source_reference.hpp
+++ b/cpp/include/cucumber/messages/source_reference.hpp
@@ -3,6 +3,8 @@
 #include <vector>
 #include <string>
 
+#include <nlohmann/json.hpp>
+
 #include <cucumber/messages/java_method.hpp>
 #include <cucumber/messages/java_stack_trace_element.hpp>
 #include <cucumber/messages/location.hpp>
@@ -31,4 +33,8 @@ struct source_reference
 std::ostream&
 operator<<(std::ostream& os, const source_reference& msg);
 
+using json = nlohmann::json;
+
+void to_json(json& j, const source_reference& m);
+
 }
diff --git a/cpp/include/cucumber/messages/step.hpp b/cpp/include/cucumber/messages/step.hpp
index 9f37c874..bb182a16 100644
--- a/cpp/include/cucumber/messages/step.hpp
+++ b/cpp/include/cucumber/messages/step.hpp
@@ -3,6 +3,8 @@
 #include <vector>
 #include <string>
 
+#include <nlohmann/json.hpp>
+
 #include <cucumber/messages/location.hpp>
 #include <cucumber/messages/step_keyword_type.hpp>
 #include <cucumber/messages/doc_string.hpp>
@@ -34,4 +36,8 @@ struct step
 std::ostream&
 operator<<(std::ostream& os, const step& msg);
 
+using json = nlohmann::json;
+
+void to_json(json& j, const step& m);
+
 }
diff --git a/cpp/include/cucumber/messages/step_definition.hpp b/cpp/include/cucumber/messages/step_definition.hpp
index 49922e33..52a158fb 100644
--- a/cpp/include/cucumber/messages/step_definition.hpp
+++ b/cpp/include/cucumber/messages/step_definition.hpp
@@ -3,6 +3,8 @@
 #include <vector>
 #include <string>
 
+#include <nlohmann/json.hpp>
+
 #include <cucumber/messages/step_definition_pattern.hpp>
 #include <cucumber/messages/source_reference.hpp>
 
@@ -26,4 +28,8 @@ struct step_definition
 std::ostream&
 operator<<(std::ostream& os, const step_definition& msg);
 
+using json = nlohmann::json;
+
+void to_json(json& j, const step_definition& m);
+
 }
diff --git a/cpp/include/cucumber/messages/step_definition_pattern.hpp b/cpp/include/cucumber/messages/step_definition_pattern.hpp
index cbb39b24..ea5e0722 100644
--- a/cpp/include/cucumber/messages/step_definition_pattern.hpp
+++ b/cpp/include/cucumber/messages/step_definition_pattern.hpp
@@ -3,6 +3,8 @@
 #include <vector>
 #include <string>
 
+#include <nlohmann/json.hpp>
+
 #include <cucumber/messages/step_definition_pattern_type.hpp>
 
 namespace cucumber::messages {
@@ -24,4 +26,8 @@ struct step_definition_pattern
 std::ostream&
 operator<<(std::ostream& os, const step_definition_pattern& msg);
 
+using json = nlohmann::json;
+
+void to_json(json& j, const step_definition_pattern& m);
+
 }
diff --git a/cpp/include/cucumber/messages/step_match_argument.hpp b/cpp/include/cucumber/messages/step_match_argument.hpp
index d4c06da4..8c391833 100644
--- a/cpp/include/cucumber/messages/step_match_argument.hpp
+++ b/cpp/include/cucumber/messages/step_match_argument.hpp
@@ -3,6 +3,8 @@
 #include <vector>
 #include <string>
 
+#include <nlohmann/json.hpp>
+
 #include <cucumber/messages/group.hpp>
 
 namespace cucumber::messages {
@@ -31,4 +33,8 @@ struct step_match_argument
 std::ostream&
 operator<<(std::ostream& os, const step_match_argument& msg);
 
+using json = nlohmann::json;
+
+void to_json(json& j, const step_match_argument& m);
+
 }
diff --git a/cpp/include/cucumber/messages/step_match_arguments_list.hpp b/cpp/include/cucumber/messages/step_match_arguments_list.hpp
index 19965e5a..ef929049 100644
--- a/cpp/include/cucumber/messages/step_match_arguments_list.hpp
+++ b/cpp/include/cucumber/messages/step_match_arguments_list.hpp
@@ -3,6 +3,8 @@
 #include <vector>
 #include <string>
 
+#include <nlohmann/json.hpp>
+
 #include <cucumber/messages/step_match_argument.hpp>
 
 namespace cucumber::messages {
@@ -23,4 +25,8 @@ struct step_match_arguments_list
 std::ostream&
 operator<<(std::ostream& os, const step_match_arguments_list& msg);
 
+using json = nlohmann::json;
+
+void to_json(json& j, const step_match_arguments_list& m);
+
 }
diff --git a/cpp/include/cucumber/messages/table_cell.hpp b/cpp/include/cucumber/messages/table_cell.hpp
index e22fa77c..829b629d 100644
--- a/cpp/include/cucumber/messages/table_cell.hpp
+++ b/cpp/include/cucumber/messages/table_cell.hpp
@@ -3,6 +3,8 @@
 #include <vector>
 #include <string>
 
+#include <nlohmann/json.hpp>
+
 #include <cucumber/messages/location.hpp>
 
 namespace cucumber::messages {
@@ -26,4 +28,8 @@ struct table_cell
 std::ostream&
 operator<<(std::ostream& os, const table_cell& msg);
 
+using json = nlohmann::json;
+
+void to_json(json& j, const table_cell& m);
+
 }
diff --git a/cpp/include/cucumber/messages/table_row.hpp b/cpp/include/cucumber/messages/table_row.hpp
index 4b79f7e8..d83dace4 100644
--- a/cpp/include/cucumber/messages/table_row.hpp
+++ b/cpp/include/cucumber/messages/table_row.hpp
@@ -3,6 +3,8 @@
 #include <vector>
 #include <string>
 
+#include <nlohmann/json.hpp>
+
 #include <cucumber/messages/location.hpp>
 #include <cucumber/messages/table_cell.hpp>
 
@@ -28,4 +30,8 @@ struct table_row
 std::ostream&
 operator<<(std::ostream& os, const table_row& msg);
 
+using json = nlohmann::json;
+
+void to_json(json& j, const table_row& m);
+
 }
diff --git a/cpp/include/cucumber/messages/tag.hpp b/cpp/include/cucumber/messages/tag.hpp
index aa880cf6..0753c75e 100644
--- a/cpp/include/cucumber/messages/tag.hpp
+++ b/cpp/include/cucumber/messages/tag.hpp
@@ -3,6 +3,8 @@
 #include <vector>
 #include <string>
 
+#include <nlohmann/json.hpp>
+
 #include <cucumber/messages/location.hpp>
 
 namespace cucumber::messages {
@@ -27,4 +29,8 @@ struct tag
 std::ostream&
 operator<<(std::ostream& os, const tag& msg);
 
+using json = nlohmann::json;
+
+void to_json(json& j, const tag& m);
+
 }
diff --git a/cpp/include/cucumber/messages/test_case.hpp b/cpp/include/cucumber/messages/test_case.hpp
index 732d884f..6029e6f8 100644
--- a/cpp/include/cucumber/messages/test_case.hpp
+++ b/cpp/include/cucumber/messages/test_case.hpp
@@ -3,6 +3,8 @@
 #include <vector>
 #include <string>
 
+#include <nlohmann/json.hpp>
+
 #include <cucumber/messages/test_step.hpp>
 
 namespace cucumber::messages {
@@ -29,4 +31,8 @@ struct test_case
 std::ostream&
 operator<<(std::ostream& os, const test_case& msg);
 
+using json = nlohmann::json;
+
+void to_json(json& j, const test_case& m);
+
 }
diff --git a/cpp/include/cucumber/messages/test_case_finished.hpp b/cpp/include/cucumber/messages/test_case_finished.hpp
index 934f49c3..dc70e3fa 100644
--- a/cpp/include/cucumber/messages/test_case_finished.hpp
+++ b/cpp/include/cucumber/messages/test_case_finished.hpp
@@ -3,6 +3,8 @@
 #include <vector>
 #include <string>
 
+#include <nlohmann/json.hpp>
+
 #include <cucumber/messages/timestamp.hpp>
 
 namespace cucumber::messages {
@@ -25,4 +27,8 @@ struct test_case_finished
 std::ostream&
 operator<<(std::ostream& os, const test_case_finished& msg);
 
+using json = nlohmann::json;
+
+void to_json(json& j, const test_case_finished& m);
+
 }
diff --git a/cpp/include/cucumber/messages/test_case_started.hpp b/cpp/include/cucumber/messages/test_case_started.hpp
index f5116942..89359b5d 100644
--- a/cpp/include/cucumber/messages/test_case_started.hpp
+++ b/cpp/include/cucumber/messages/test_case_started.hpp
@@ -3,6 +3,8 @@
 #include <vector>
 #include <string>
 
+#include <nlohmann/json.hpp>
+
 #include <cucumber/messages/timestamp.hpp>
 
 namespace cucumber::messages {
@@ -27,4 +29,8 @@ struct test_case_started
 std::ostream&
 operator<<(std::ostream& os, const test_case_started& msg);
 
+using json = nlohmann::json;
+
+void to_json(json& j, const test_case_started& m);
+
 }
diff --git a/cpp/include/cucumber/messages/test_run_finished.hpp b/cpp/include/cucumber/messages/test_run_finished.hpp
index 857e8edf..b36181e0 100644
--- a/cpp/include/cucumber/messages/test_run_finished.hpp
+++ b/cpp/include/cucumber/messages/test_run_finished.hpp
@@ -3,6 +3,8 @@
 #include <vector>
 #include <string>
 
+#include <nlohmann/json.hpp>
+
 #include <cucumber/messages/timestamp.hpp>
 #include <cucumber/messages/exception.hpp>
 
@@ -27,4 +29,8 @@ struct test_run_finished
 std::ostream&
 operator<<(std::ostream& os, const test_run_finished& msg);
 
+using json = nlohmann::json;
+
+void to_json(json& j, const test_run_finished& m);
+
 }
diff --git a/cpp/include/cucumber/messages/test_run_started.hpp b/cpp/include/cucumber/messages/test_run_started.hpp
index 66850a69..a2c1793a 100644
--- a/cpp/include/cucumber/messages/test_run_started.hpp
+++ b/cpp/include/cucumber/messages/test_run_started.hpp
@@ -3,6 +3,8 @@
 #include <vector>
 #include <string>
 
+#include <nlohmann/json.hpp>
+
 #include <cucumber/messages/timestamp.hpp>
 
 namespace cucumber::messages {
@@ -23,4 +25,8 @@ struct test_run_started
 std::ostream&
 operator<<(std::ostream& os, const test_run_started& msg);
 
+using json = nlohmann::json;
+
+void to_json(json& j, const test_run_started& m);
+
 }
diff --git a/cpp/include/cucumber/messages/test_step.hpp b/cpp/include/cucumber/messages/test_step.hpp
index d8e83469..b1af181f 100644
--- a/cpp/include/cucumber/messages/test_step.hpp
+++ b/cpp/include/cucumber/messages/test_step.hpp
@@ -3,6 +3,8 @@
 #include <vector>
 #include <string>
 
+#include <nlohmann/json.hpp>
+
 #include <cucumber/messages/step_match_arguments_list.hpp>
 
 namespace cucumber::messages {
@@ -30,4 +32,8 @@ struct test_step
 std::ostream&
 operator<<(std::ostream& os, const test_step& msg);
 
+using json = nlohmann::json;
+
+void to_json(json& j, const test_step& m);
+
 }
diff --git a/cpp/include/cucumber/messages/test_step_finished.hpp b/cpp/include/cucumber/messages/test_step_finished.hpp
index 30619dad..ac1f2e2c 100644
--- a/cpp/include/cucumber/messages/test_step_finished.hpp
+++ b/cpp/include/cucumber/messages/test_step_finished.hpp
@@ -3,6 +3,8 @@
 #include <vector>
 #include <string>
 
+#include <nlohmann/json.hpp>
+
 #include <cucumber/messages/test_step_result.hpp>
 #include <cucumber/messages/timestamp.hpp>
 
@@ -27,4 +29,8 @@ struct test_step_finished
 std::ostream&
 operator<<(std::ostream& os, const test_step_finished& msg);
 
+using json = nlohmann::json;
+
+void to_json(json& j, const test_step_finished& m);
+
 }
diff --git a/cpp/include/cucumber/messages/test_step_result.hpp b/cpp/include/cucumber/messages/test_step_result.hpp
index c80e9752..5010c1df 100644
--- a/cpp/include/cucumber/messages/test_step_result.hpp
+++ b/cpp/include/cucumber/messages/test_step_result.hpp
@@ -3,6 +3,8 @@
 #include <vector>
 #include <string>
 
+#include <nlohmann/json.hpp>
+
 #include <cucumber/messages/duration.hpp>
 #include <cucumber/messages/test_step_result_status.hpp>
 #include <cucumber/messages/exception.hpp>
@@ -28,4 +30,8 @@ struct test_step_result
 std::ostream&
 operator<<(std::ostream& os, const test_step_result& msg);
 
+using json = nlohmann::json;
+
+void to_json(json& j, const test_step_result& m);
+
 }
diff --git a/cpp/include/cucumber/messages/test_step_started.hpp b/cpp/include/cucumber/messages/test_step_started.hpp
index 428c0b8d..f4f7a97c 100644
--- a/cpp/include/cucumber/messages/test_step_started.hpp
+++ b/cpp/include/cucumber/messages/test_step_started.hpp
@@ -3,6 +3,8 @@
 #include <vector>
 #include <string>
 
+#include <nlohmann/json.hpp>
+
 #include <cucumber/messages/timestamp.hpp>
 
 namespace cucumber::messages {
@@ -25,4 +27,8 @@ struct test_step_started
 std::ostream&
 operator<<(std::ostream& os, const test_step_started& msg);
 
+using json = nlohmann::json;
+
+void to_json(json& j, const test_step_started& m);
+
 }
diff --git a/cpp/include/cucumber/messages/timestamp.hpp b/cpp/include/cucumber/messages/timestamp.hpp
index f2796e96..c17b0190 100644
--- a/cpp/include/cucumber/messages/timestamp.hpp
+++ b/cpp/include/cucumber/messages/timestamp.hpp
@@ -3,6 +3,8 @@
 #include <vector>
 #include <string>
 
+#include <nlohmann/json.hpp>
+
 namespace cucumber::messages {
 
 //
@@ -22,4 +24,8 @@ struct timestamp
 std::ostream&
 operator<<(std::ostream& os, const timestamp& msg);
 
+using json = nlohmann::json;
+
+void to_json(json& j, const timestamp& m);
+
 }
diff --git a/cpp/include/cucumber/messages/undefined_parameter_type.hpp b/cpp/include/cucumber/messages/undefined_parameter_type.hpp
index cf410fa9..6e75c084 100644
--- a/cpp/include/cucumber/messages/undefined_parameter_type.hpp
+++ b/cpp/include/cucumber/messages/undefined_parameter_type.hpp
@@ -3,6 +3,8 @@
 #include <vector>
 #include <string>
 
+#include <nlohmann/json.hpp>
+
 namespace cucumber::messages {
 
 //
@@ -22,4 +24,8 @@ struct undefined_parameter_type
 std::ostream&
 operator<<(std::ostream& os, const undefined_parameter_type& msg);
 
+using json = nlohmann::json;
+
+void to_json(json& j, const undefined_parameter_type& m);
+
 }
diff --git a/cpp/include/nlohmann/json.hpp b/cpp/include/nlohmann/json.hpp
new file mode 100644
index 00000000..dbbe6845
--- /dev/null
+++ b/cpp/include/nlohmann/json.hpp
@@ -0,0 +1,24674 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.2
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013-2022 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+/****************************************************************************\
+ * Note on documentation: The source files contain links to the online      *
+ * documentation of the public API at https://json.nlohmann.me. This URL    *
+ * contains the most recent documentation and should also be applicable to  *
+ * previous versions; documentation for deprecated functions is not         *
+ * removed, but marked deprecated. See "Generate documentation" section in  *
+ * file docs/README.md.                                                     *
+\****************************************************************************/
+
+#ifndef INCLUDE_NLOHMANN_JSON_HPP_
+#define INCLUDE_NLOHMANN_JSON_HPP_
+
+#include <algorithm> // all_of, find, for_each
+#include <cstddef> // nullptr_t, ptrdiff_t, size_t
+#include <functional> // hash, less
+#include <initializer_list> // initializer_list
+#ifndef JSON_NO_IO
+    #include <iosfwd> // istream, ostream
+#endif  // JSON_NO_IO
+#include <iterator> // random_access_iterator_tag
+#include <memory> // unique_ptr
+#include <string> // string, stoi, to_string
+#include <utility> // declval, forward, move, pair, swap
+#include <vector> // vector
+
+// #include <nlohmann/adl_serializer.hpp>
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.2
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013-2022 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+
+
+#include <utility>
+
+// #include <nlohmann/detail/abi_macros.hpp>
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.2
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013-2022 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+
+
+// This file contains all macro definitions affecting or depending on the ABI
+
+#ifndef JSON_SKIP_LIBRARY_VERSION_CHECK
+    #if defined(NLOHMANN_JSON_VERSION_MAJOR) && defined(NLOHMANN_JSON_VERSION_MINOR) && defined(NLOHMANN_JSON_VERSION_PATCH)
+        #if NLOHMANN_JSON_VERSION_MAJOR != 3 || NLOHMANN_JSON_VERSION_MINOR != 11 || NLOHMANN_JSON_VERSION_PATCH != 2
+            #warning "Already included a different version of the library!"
+        #endif
+    #endif
+#endif
+
+#define NLOHMANN_JSON_VERSION_MAJOR 3   // NOLINT(modernize-macro-to-enum)
+#define NLOHMANN_JSON_VERSION_MINOR 11  // NOLINT(modernize-macro-to-enum)
+#define NLOHMANN_JSON_VERSION_PATCH 2   // NOLINT(modernize-macro-to-enum)
+
+#ifndef JSON_DIAGNOSTICS
+    #define JSON_DIAGNOSTICS 0
+#endif
+
+#ifndef JSON_USE_LEGACY_DISCARDED_VALUE_COMPARISON
+    #define JSON_USE_LEGACY_DISCARDED_VALUE_COMPARISON 0
+#endif
+
+#if JSON_DIAGNOSTICS
+    #define NLOHMANN_JSON_ABI_TAG_DIAGNOSTICS _diag
+#else
+    #define NLOHMANN_JSON_ABI_TAG_DIAGNOSTICS
+#endif
+
+#if JSON_USE_LEGACY_DISCARDED_VALUE_COMPARISON
+    #define NLOHMANN_JSON_ABI_TAG_LEGACY_DISCARDED_VALUE_COMPARISON _ldvcmp
+#else
+    #define NLOHMANN_JSON_ABI_TAG_LEGACY_DISCARDED_VALUE_COMPARISON
+#endif
+
+#ifndef NLOHMANN_JSON_NAMESPACE_NO_VERSION
+    #define NLOHMANN_JSON_NAMESPACE_NO_VERSION 0
+#endif
+
+// Construct the namespace ABI tags component
+#define NLOHMANN_JSON_ABI_TAGS_CONCAT_EX(a, b) json_abi ## a ## b
+#define NLOHMANN_JSON_ABI_TAGS_CONCAT(a, b) \
+    NLOHMANN_JSON_ABI_TAGS_CONCAT_EX(a, b)
+
+#define NLOHMANN_JSON_ABI_TAGS                                       \
+    NLOHMANN_JSON_ABI_TAGS_CONCAT(                                   \
+            NLOHMANN_JSON_ABI_TAG_DIAGNOSTICS,                       \
+            NLOHMANN_JSON_ABI_TAG_LEGACY_DISCARDED_VALUE_COMPARISON)
+
+// Construct the namespace version component
+#define NLOHMANN_JSON_NAMESPACE_VERSION_CONCAT_EX(major, minor, patch) \
+    _v ## major ## _ ## minor ## _ ## patch
+#define NLOHMANN_JSON_NAMESPACE_VERSION_CONCAT(major, minor, patch) \
+    NLOHMANN_JSON_NAMESPACE_VERSION_CONCAT_EX(major, minor, patch)
+
+#if NLOHMANN_JSON_NAMESPACE_NO_VERSION
+#define NLOHMANN_JSON_NAMESPACE_VERSION
+#else
+#define NLOHMANN_JSON_NAMESPACE_VERSION                                 \
+    NLOHMANN_JSON_NAMESPACE_VERSION_CONCAT(NLOHMANN_JSON_VERSION_MAJOR, \
+                                           NLOHMANN_JSON_VERSION_MINOR, \
+                                           NLOHMANN_JSON_VERSION_PATCH)
+#endif
+
+// Combine namespace components
+#define NLOHMANN_JSON_NAMESPACE_CONCAT_EX(a, b) a ## b
+#define NLOHMANN_JSON_NAMESPACE_CONCAT(a, b) \
+    NLOHMANN_JSON_NAMESPACE_CONCAT_EX(a, b)
+
+#ifndef NLOHMANN_JSON_NAMESPACE
+#define NLOHMANN_JSON_NAMESPACE               \
+    nlohmann::NLOHMANN_JSON_NAMESPACE_CONCAT( \
+            NLOHMANN_JSON_ABI_TAGS,           \
+            NLOHMANN_JSON_NAMESPACE_VERSION)
+#endif
+
+#ifndef NLOHMANN_JSON_NAMESPACE_BEGIN
+#define NLOHMANN_JSON_NAMESPACE_BEGIN                \
+    namespace nlohmann                               \
+    {                                                \
+    inline namespace NLOHMANN_JSON_NAMESPACE_CONCAT( \
+                NLOHMANN_JSON_ABI_TAGS,              \
+                NLOHMANN_JSON_NAMESPACE_VERSION)     \
+    {
+#endif
+
+#ifndef NLOHMANN_JSON_NAMESPACE_END
+#define NLOHMANN_JSON_NAMESPACE_END                                     \
+    }  /* namespace (inline namespace) NOLINT(readability/namespace) */ \
+    }  // namespace nlohmann
+#endif
+
+// #include <nlohmann/detail/conversions/from_json.hpp>
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.2
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013-2022 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+
+
+#include <algorithm> // transform
+#include <array> // array
+#include <forward_list> // forward_list
+#include <iterator> // inserter, front_inserter, end
+#include <map> // map
+#include <string> // string
+#include <tuple> // tuple, make_tuple
+#include <type_traits> // is_arithmetic, is_same, is_enum, underlying_type, is_convertible
+#include <unordered_map> // unordered_map
+#include <utility> // pair, declval
+#include <valarray> // valarray
+
+// #include <nlohmann/detail/exceptions.hpp>
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.2
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013-2022 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+
+
+#include <cstddef> // nullptr_t
+#include <exception> // exception
+#if JSON_DIAGNOSTICS
+    #include <numeric> // accumulate
+#endif
+#include <stdexcept> // runtime_error
+#include <string> // to_string
+#include <vector> // vector
+
+// #include <nlohmann/detail/value_t.hpp>
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.2
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013-2022 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+
+
+#include <array> // array
+#include <cstddef> // size_t
+#include <cstdint> // uint8_t
+#include <string> // string
+
+// #include <nlohmann/detail/macro_scope.hpp>
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.2
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013-2022 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+
+
+#include <utility> // declval, pair
+// #include <nlohmann/detail/meta/detected.hpp>
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.2
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013-2022 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+
+
+#include <type_traits>
+
+// #include <nlohmann/detail/meta/void_t.hpp>
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.2
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013-2022 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+
+
+// #include <nlohmann/detail/abi_macros.hpp>
+
+
+NLOHMANN_JSON_NAMESPACE_BEGIN
+namespace detail
+{
+
+template<typename ...Ts> struct make_void
+{
+    using type = void;
+};
+template<typename ...Ts> using void_t = typename make_void<Ts...>::type;
+
+}  // namespace detail
+NLOHMANN_JSON_NAMESPACE_END
+
+
+NLOHMANN_JSON_NAMESPACE_BEGIN
+namespace detail
+{
+
+// https://en.cppreference.com/w/cpp/experimental/is_detected
+struct nonesuch
+{
+    nonesuch() = delete;
+    ~nonesuch() = delete;
+    nonesuch(nonesuch const&) = delete;
+    nonesuch(nonesuch const&&) = delete;
+    void operator=(nonesuch const&) = delete;
+    void operator=(nonesuch&&) = delete;
+};
+
+template<class Default,
+         class AlwaysVoid,
+         template<class...> class Op,
+         class... Args>
+struct detector
+{
+    using value_t = std::false_type;
+    using type = Default;
+};
+
+template<class Default, template<class...> class Op, class... Args>
+struct detector<Default, void_t<Op<Args...>>, Op, Args...>
+{
+    using value_t = std::true_type;
+    using type = Op<Args...>;
+};
+
+template<template<class...> class Op, class... Args>
+using is_detected = typename detector<nonesuch, void, Op, Args...>::value_t;
+
+template<template<class...> class Op, class... Args>
+struct is_detected_lazy : is_detected<Op, Args...> { };
+
+template<template<class...> class Op, class... Args>
+using detected_t = typename detector<nonesuch, void, Op, Args...>::type;
+
+template<class Default, template<class...> class Op, class... Args>
+using detected_or = detector<Default, void, Op, Args...>;
+
+template<class Default, template<class...> class Op, class... Args>
+using detected_or_t = typename detected_or<Default, Op, Args...>::type;
+
+template<class Expected, template<class...> class Op, class... Args>
+using is_detected_exact = std::is_same<Expected, detected_t<Op, Args...>>;
+
+template<class To, template<class...> class Op, class... Args>
+using is_detected_convertible =
+    std::is_convertible<detected_t<Op, Args...>, To>;
+
+}  // namespace detail
+NLOHMANN_JSON_NAMESPACE_END
+
+// #include <nlohmann/thirdparty/hedley/hedley.hpp>
+
+
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.2
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013-2022 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2016-2021 Evan Nemerson <evan@nemerson.com>
+// SPDX-License-Identifier: MIT
+
+/* Hedley - https://nemequ.github.io/hedley
+ * Created by Evan Nemerson <evan@nemerson.com>
+ */
+
+#if !defined(JSON_HEDLEY_VERSION) || (JSON_HEDLEY_VERSION < 15)
+#if defined(JSON_HEDLEY_VERSION)
+    #undef JSON_HEDLEY_VERSION
+#endif
+#define JSON_HEDLEY_VERSION 15
+
+#if defined(JSON_HEDLEY_STRINGIFY_EX)
+    #undef JSON_HEDLEY_STRINGIFY_EX
+#endif
+#define JSON_HEDLEY_STRINGIFY_EX(x) #x
+
+#if defined(JSON_HEDLEY_STRINGIFY)
+    #undef JSON_HEDLEY_STRINGIFY
+#endif
+#define JSON_HEDLEY_STRINGIFY(x) JSON_HEDLEY_STRINGIFY_EX(x)
+
+#if defined(JSON_HEDLEY_CONCAT_EX)
+    #undef JSON_HEDLEY_CONCAT_EX
+#endif
+#define JSON_HEDLEY_CONCAT_EX(a,b) a##b
+
+#if defined(JSON_HEDLEY_CONCAT)
+    #undef JSON_HEDLEY_CONCAT
+#endif
+#define JSON_HEDLEY_CONCAT(a,b) JSON_HEDLEY_CONCAT_EX(a,b)
+
+#if defined(JSON_HEDLEY_CONCAT3_EX)
+    #undef JSON_HEDLEY_CONCAT3_EX
+#endif
+#define JSON_HEDLEY_CONCAT3_EX(a,b,c) a##b##c
+
+#if defined(JSON_HEDLEY_CONCAT3)
+    #undef JSON_HEDLEY_CONCAT3
+#endif
+#define JSON_HEDLEY_CONCAT3(a,b,c) JSON_HEDLEY_CONCAT3_EX(a,b,c)
+
+#if defined(JSON_HEDLEY_VERSION_ENCODE)
+    #undef JSON_HEDLEY_VERSION_ENCODE
+#endif
+#define JSON_HEDLEY_VERSION_ENCODE(major,minor,revision) (((major) * 1000000) + ((minor) * 1000) + (revision))
+
+#if defined(JSON_HEDLEY_VERSION_DECODE_MAJOR)
+    #undef JSON_HEDLEY_VERSION_DECODE_MAJOR
+#endif
+#define JSON_HEDLEY_VERSION_DECODE_MAJOR(version) ((version) / 1000000)
+
+#if defined(JSON_HEDLEY_VERSION_DECODE_MINOR)
+    #undef JSON_HEDLEY_VERSION_DECODE_MINOR
+#endif
+#define JSON_HEDLEY_VERSION_DECODE_MINOR(version) (((version) % 1000000) / 1000)
+
+#if defined(JSON_HEDLEY_VERSION_DECODE_REVISION)
+    #undef JSON_HEDLEY_VERSION_DECODE_REVISION
+#endif
+#define JSON_HEDLEY_VERSION_DECODE_REVISION(version) ((version) % 1000)
+
+#if defined(JSON_HEDLEY_GNUC_VERSION)
+    #undef JSON_HEDLEY_GNUC_VERSION
+#endif
+#if defined(__GNUC__) && defined(__GNUC_PATCHLEVEL__)
+    #define JSON_HEDLEY_GNUC_VERSION JSON_HEDLEY_VERSION_ENCODE(__GNUC__, __GNUC_MINOR__, __GNUC_PATCHLEVEL__)
+#elif defined(__GNUC__)
+    #define JSON_HEDLEY_GNUC_VERSION JSON_HEDLEY_VERSION_ENCODE(__GNUC__, __GNUC_MINOR__, 0)
+#endif
+
+#if defined(JSON_HEDLEY_GNUC_VERSION_CHECK)
+    #undef JSON_HEDLEY_GNUC_VERSION_CHECK
+#endif
+#if defined(JSON_HEDLEY_GNUC_VERSION)
+    #define JSON_HEDLEY_GNUC_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_GNUC_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
+#else
+    #define JSON_HEDLEY_GNUC_VERSION_CHECK(major,minor,patch) (0)
+#endif
+
+#if defined(JSON_HEDLEY_MSVC_VERSION)
+    #undef JSON_HEDLEY_MSVC_VERSION
+#endif
+#if defined(_MSC_FULL_VER) && (_MSC_FULL_VER >= 140000000) && !defined(__ICL)
+    #define JSON_HEDLEY_MSVC_VERSION JSON_HEDLEY_VERSION_ENCODE(_MSC_FULL_VER / 10000000, (_MSC_FULL_VER % 10000000) / 100000, (_MSC_FULL_VER % 100000) / 100)
+#elif defined(_MSC_FULL_VER) && !defined(__ICL)
+    #define JSON_HEDLEY_MSVC_VERSION JSON_HEDLEY_VERSION_ENCODE(_MSC_FULL_VER / 1000000, (_MSC_FULL_VER % 1000000) / 10000, (_MSC_FULL_VER % 10000) / 10)
+#elif defined(_MSC_VER) && !defined(__ICL)
+    #define JSON_HEDLEY_MSVC_VERSION JSON_HEDLEY_VERSION_ENCODE(_MSC_VER / 100, _MSC_VER % 100, 0)
+#endif
+
+#if defined(JSON_HEDLEY_MSVC_VERSION_CHECK)
+    #undef JSON_HEDLEY_MSVC_VERSION_CHECK
+#endif
+#if !defined(JSON_HEDLEY_MSVC_VERSION)
+    #define JSON_HEDLEY_MSVC_VERSION_CHECK(major,minor,patch) (0)
+#elif defined(_MSC_VER) && (_MSC_VER >= 1400)
+    #define JSON_HEDLEY_MSVC_VERSION_CHECK(major,minor,patch) (_MSC_FULL_VER >= ((major * 10000000) + (minor * 100000) + (patch)))
+#elif defined(_MSC_VER) && (_MSC_VER >= 1200)
+    #define JSON_HEDLEY_MSVC_VERSION_CHECK(major,minor,patch) (_MSC_FULL_VER >= ((major * 1000000) + (minor * 10000) + (patch)))
+#else
+    #define JSON_HEDLEY_MSVC_VERSION_CHECK(major,minor,patch) (_MSC_VER >= ((major * 100) + (minor)))
+#endif
+
+#if defined(JSON_HEDLEY_INTEL_VERSION)
+    #undef JSON_HEDLEY_INTEL_VERSION
+#endif
+#if defined(__INTEL_COMPILER) && defined(__INTEL_COMPILER_UPDATE) && !defined(__ICL)
+    #define JSON_HEDLEY_INTEL_VERSION JSON_HEDLEY_VERSION_ENCODE(__INTEL_COMPILER / 100, __INTEL_COMPILER % 100, __INTEL_COMPILER_UPDATE)
+#elif defined(__INTEL_COMPILER) && !defined(__ICL)
+    #define JSON_HEDLEY_INTEL_VERSION JSON_HEDLEY_VERSION_ENCODE(__INTEL_COMPILER / 100, __INTEL_COMPILER % 100, 0)
+#endif
+
+#if defined(JSON_HEDLEY_INTEL_VERSION_CHECK)
+    #undef JSON_HEDLEY_INTEL_VERSION_CHECK
+#endif
+#if defined(JSON_HEDLEY_INTEL_VERSION)
+    #define JSON_HEDLEY_INTEL_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_INTEL_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
+#else
+    #define JSON_HEDLEY_INTEL_VERSION_CHECK(major,minor,patch) (0)
+#endif
+
+#if defined(JSON_HEDLEY_INTEL_CL_VERSION)
+    #undef JSON_HEDLEY_INTEL_CL_VERSION
+#endif
+#if defined(__INTEL_COMPILER) && defined(__INTEL_COMPILER_UPDATE) && defined(__ICL)
+    #define JSON_HEDLEY_INTEL_CL_VERSION JSON_HEDLEY_VERSION_ENCODE(__INTEL_COMPILER, __INTEL_COMPILER_UPDATE, 0)
+#endif
+
+#if defined(JSON_HEDLEY_INTEL_CL_VERSION_CHECK)
+    #undef JSON_HEDLEY_INTEL_CL_VERSION_CHECK
+#endif
+#if defined(JSON_HEDLEY_INTEL_CL_VERSION)
+    #define JSON_HEDLEY_INTEL_CL_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_INTEL_CL_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
+#else
+    #define JSON_HEDLEY_INTEL_CL_VERSION_CHECK(major,minor,patch) (0)
+#endif
+
+#if defined(JSON_HEDLEY_PGI_VERSION)
+    #undef JSON_HEDLEY_PGI_VERSION
+#endif
+#if defined(__PGI) && defined(__PGIC__) && defined(__PGIC_MINOR__) && defined(__PGIC_PATCHLEVEL__)
+    #define JSON_HEDLEY_PGI_VERSION JSON_HEDLEY_VERSION_ENCODE(__PGIC__, __PGIC_MINOR__, __PGIC_PATCHLEVEL__)
+#endif
+
+#if defined(JSON_HEDLEY_PGI_VERSION_CHECK)
+    #undef JSON_HEDLEY_PGI_VERSION_CHECK
+#endif
+#if defined(JSON_HEDLEY_PGI_VERSION)
+    #define JSON_HEDLEY_PGI_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_PGI_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
+#else
+    #define JSON_HEDLEY_PGI_VERSION_CHECK(major,minor,patch) (0)
+#endif
+
+#if defined(JSON_HEDLEY_SUNPRO_VERSION)
+    #undef JSON_HEDLEY_SUNPRO_VERSION
+#endif
+#if defined(__SUNPRO_C) && (__SUNPRO_C > 0x1000)
+    #define JSON_HEDLEY_SUNPRO_VERSION JSON_HEDLEY_VERSION_ENCODE((((__SUNPRO_C >> 16) & 0xf) * 10) + ((__SUNPRO_C >> 12) & 0xf), (((__SUNPRO_C >> 8) & 0xf) * 10) + ((__SUNPRO_C >> 4) & 0xf), (__SUNPRO_C & 0xf) * 10)
+#elif defined(__SUNPRO_C)
+    #define JSON_HEDLEY_SUNPRO_VERSION JSON_HEDLEY_VERSION_ENCODE((__SUNPRO_C >> 8) & 0xf, (__SUNPRO_C >> 4) & 0xf, (__SUNPRO_C) & 0xf)
+#elif defined(__SUNPRO_CC) && (__SUNPRO_CC > 0x1000)
+    #define JSON_HEDLEY_SUNPRO_VERSION JSON_HEDLEY_VERSION_ENCODE((((__SUNPRO_CC >> 16) & 0xf) * 10) + ((__SUNPRO_CC >> 12) & 0xf), (((__SUNPRO_CC >> 8) & 0xf) * 10) + ((__SUNPRO_CC >> 4) & 0xf), (__SUNPRO_CC & 0xf) * 10)
+#elif defined(__SUNPRO_CC)
+    #define JSON_HEDLEY_SUNPRO_VERSION JSON_HEDLEY_VERSION_ENCODE((__SUNPRO_CC >> 8) & 0xf, (__SUNPRO_CC >> 4) & 0xf, (__SUNPRO_CC) & 0xf)
+#endif
+
+#if defined(JSON_HEDLEY_SUNPRO_VERSION_CHECK)
+    #undef JSON_HEDLEY_SUNPRO_VERSION_CHECK
+#endif
+#if defined(JSON_HEDLEY_SUNPRO_VERSION)
+    #define JSON_HEDLEY_SUNPRO_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_SUNPRO_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
+#else
+    #define JSON_HEDLEY_SUNPRO_VERSION_CHECK(major,minor,patch) (0)
+#endif
+
+#if defined(JSON_HEDLEY_EMSCRIPTEN_VERSION)
+    #undef JSON_HEDLEY_EMSCRIPTEN_VERSION
+#endif
+#if defined(__EMSCRIPTEN__)
+    #define JSON_HEDLEY_EMSCRIPTEN_VERSION JSON_HEDLEY_VERSION_ENCODE(__EMSCRIPTEN_major__, __EMSCRIPTEN_minor__, __EMSCRIPTEN_tiny__)
+#endif
+
+#if defined(JSON_HEDLEY_EMSCRIPTEN_VERSION_CHECK)
+    #undef JSON_HEDLEY_EMSCRIPTEN_VERSION_CHECK
+#endif
+#if defined(JSON_HEDLEY_EMSCRIPTEN_VERSION)
+    #define JSON_HEDLEY_EMSCRIPTEN_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_EMSCRIPTEN_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
+#else
+    #define JSON_HEDLEY_EMSCRIPTEN_VERSION_CHECK(major,minor,patch) (0)
+#endif
+
+#if defined(JSON_HEDLEY_ARM_VERSION)
+    #undef JSON_HEDLEY_ARM_VERSION
+#endif
+#if defined(__CC_ARM) && defined(__ARMCOMPILER_VERSION)
+    #define JSON_HEDLEY_ARM_VERSION JSON_HEDLEY_VERSION_ENCODE(__ARMCOMPILER_VERSION / 1000000, (__ARMCOMPILER_VERSION % 1000000) / 10000, (__ARMCOMPILER_VERSION % 10000) / 100)
+#elif defined(__CC_ARM) && defined(__ARMCC_VERSION)
+    #define JSON_HEDLEY_ARM_VERSION JSON_HEDLEY_VERSION_ENCODE(__ARMCC_VERSION / 1000000, (__ARMCC_VERSION % 1000000) / 10000, (__ARMCC_VERSION % 10000) / 100)
+#endif
+
+#if defined(JSON_HEDLEY_ARM_VERSION_CHECK)
+    #undef JSON_HEDLEY_ARM_VERSION_CHECK
+#endif
+#if defined(JSON_HEDLEY_ARM_VERSION)
+    #define JSON_HEDLEY_ARM_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_ARM_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
+#else
+    #define JSON_HEDLEY_ARM_VERSION_CHECK(major,minor,patch) (0)
+#endif
+
+#if defined(JSON_HEDLEY_IBM_VERSION)
+    #undef JSON_HEDLEY_IBM_VERSION
+#endif
+#if defined(__ibmxl__)
+    #define JSON_HEDLEY_IBM_VERSION JSON_HEDLEY_VERSION_ENCODE(__ibmxl_version__, __ibmxl_release__, __ibmxl_modification__)
+#elif defined(__xlC__) && defined(__xlC_ver__)
+    #define JSON_HEDLEY_IBM_VERSION JSON_HEDLEY_VERSION_ENCODE(__xlC__ >> 8, __xlC__ & 0xff, (__xlC_ver__ >> 8) & 0xff)
+#elif defined(__xlC__)
+    #define JSON_HEDLEY_IBM_VERSION JSON_HEDLEY_VERSION_ENCODE(__xlC__ >> 8, __xlC__ & 0xff, 0)
+#endif
+
+#if defined(JSON_HEDLEY_IBM_VERSION_CHECK)
+    #undef JSON_HEDLEY_IBM_VERSION_CHECK
+#endif
+#if defined(JSON_HEDLEY_IBM_VERSION)
+    #define JSON_HEDLEY_IBM_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_IBM_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
+#else
+    #define JSON_HEDLEY_IBM_VERSION_CHECK(major,minor,patch) (0)
+#endif
+
+#if defined(JSON_HEDLEY_TI_VERSION)
+    #undef JSON_HEDLEY_TI_VERSION
+#endif
+#if \
+    defined(__TI_COMPILER_VERSION__) && \
+    ( \
+      defined(__TMS470__) || defined(__TI_ARM__) || \
+      defined(__MSP430__) || \
+      defined(__TMS320C2000__) \
+    )
+#if (__TI_COMPILER_VERSION__ >= 16000000)
+    #define JSON_HEDLEY_TI_VERSION JSON_HEDLEY_VERSION_ENCODE(__TI_COMPILER_VERSION__ / 1000000, (__TI_COMPILER_VERSION__ % 1000000) / 1000, (__TI_COMPILER_VERSION__ % 1000))
+#endif
+#endif
+
+#if defined(JSON_HEDLEY_TI_VERSION_CHECK)
+    #undef JSON_HEDLEY_TI_VERSION_CHECK
+#endif
+#if defined(JSON_HEDLEY_TI_VERSION)
+    #define JSON_HEDLEY_TI_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_TI_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
+#else
+    #define JSON_HEDLEY_TI_VERSION_CHECK(major,minor,patch) (0)
+#endif
+
+#if defined(JSON_HEDLEY_TI_CL2000_VERSION)
+    #undef JSON_HEDLEY_TI_CL2000_VERSION
+#endif
+#if defined(__TI_COMPILER_VERSION__) && defined(__TMS320C2000__)
+    #define JSON_HEDLEY_TI_CL2000_VERSION JSON_HEDLEY_VERSION_ENCODE(__TI_COMPILER_VERSION__ / 1000000, (__TI_COMPILER_VERSION__ % 1000000) / 1000, (__TI_COMPILER_VERSION__ % 1000))
+#endif
+
+#if defined(JSON_HEDLEY_TI_CL2000_VERSION_CHECK)
+    #undef JSON_HEDLEY_TI_CL2000_VERSION_CHECK
+#endif
+#if defined(JSON_HEDLEY_TI_CL2000_VERSION)
+    #define JSON_HEDLEY_TI_CL2000_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_TI_CL2000_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
+#else
+    #define JSON_HEDLEY_TI_CL2000_VERSION_CHECK(major,minor,patch) (0)
+#endif
+
+#if defined(JSON_HEDLEY_TI_CL430_VERSION)
+    #undef JSON_HEDLEY_TI_CL430_VERSION
+#endif
+#if defined(__TI_COMPILER_VERSION__) && defined(__MSP430__)
+    #define JSON_HEDLEY_TI_CL430_VERSION JSON_HEDLEY_VERSION_ENCODE(__TI_COMPILER_VERSION__ / 1000000, (__TI_COMPILER_VERSION__ % 1000000) / 1000, (__TI_COMPILER_VERSION__ % 1000))
+#endif
+
+#if defined(JSON_HEDLEY_TI_CL430_VERSION_CHECK)
+    #undef JSON_HEDLEY_TI_CL430_VERSION_CHECK
+#endif
+#if defined(JSON_HEDLEY_TI_CL430_VERSION)
+    #define JSON_HEDLEY_TI_CL430_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_TI_CL430_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
+#else
+    #define JSON_HEDLEY_TI_CL430_VERSION_CHECK(major,minor,patch) (0)
+#endif
+
+#if defined(JSON_HEDLEY_TI_ARMCL_VERSION)
+    #undef JSON_HEDLEY_TI_ARMCL_VERSION
+#endif
+#if defined(__TI_COMPILER_VERSION__) && (defined(__TMS470__) || defined(__TI_ARM__))
+    #define JSON_HEDLEY_TI_ARMCL_VERSION JSON_HEDLEY_VERSION_ENCODE(__TI_COMPILER_VERSION__ / 1000000, (__TI_COMPILER_VERSION__ % 1000000) / 1000, (__TI_COMPILER_VERSION__ % 1000))
+#endif
+
+#if defined(JSON_HEDLEY_TI_ARMCL_VERSION_CHECK)
+    #undef JSON_HEDLEY_TI_ARMCL_VERSION_CHECK
+#endif
+#if defined(JSON_HEDLEY_TI_ARMCL_VERSION)
+    #define JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_TI_ARMCL_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
+#else
+    #define JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(major,minor,patch) (0)
+#endif
+
+#if defined(JSON_HEDLEY_TI_CL6X_VERSION)
+    #undef JSON_HEDLEY_TI_CL6X_VERSION
+#endif
+#if defined(__TI_COMPILER_VERSION__) && defined(__TMS320C6X__)
+    #define JSON_HEDLEY_TI_CL6X_VERSION JSON_HEDLEY_VERSION_ENCODE(__TI_COMPILER_VERSION__ / 1000000, (__TI_COMPILER_VERSION__ % 1000000) / 1000, (__TI_COMPILER_VERSION__ % 1000))
+#endif
+
+#if defined(JSON_HEDLEY_TI_CL6X_VERSION_CHECK)
+    #undef JSON_HEDLEY_TI_CL6X_VERSION_CHECK
+#endif
+#if defined(JSON_HEDLEY_TI_CL6X_VERSION)
+    #define JSON_HEDLEY_TI_CL6X_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_TI_CL6X_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
+#else
+    #define JSON_HEDLEY_TI_CL6X_VERSION_CHECK(major,minor,patch) (0)
+#endif
+
+#if defined(JSON_HEDLEY_TI_CL7X_VERSION)
+    #undef JSON_HEDLEY_TI_CL7X_VERSION
+#endif
+#if defined(__TI_COMPILER_VERSION__) && defined(__C7000__)
+    #define JSON_HEDLEY_TI_CL7X_VERSION JSON_HEDLEY_VERSION_ENCODE(__TI_COMPILER_VERSION__ / 1000000, (__TI_COMPILER_VERSION__ % 1000000) / 1000, (__TI_COMPILER_VERSION__ % 1000))
+#endif
+
+#if defined(JSON_HEDLEY_TI_CL7X_VERSION_CHECK)
+    #undef JSON_HEDLEY_TI_CL7X_VERSION_CHECK
+#endif
+#if defined(JSON_HEDLEY_TI_CL7X_VERSION)
+    #define JSON_HEDLEY_TI_CL7X_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_TI_CL7X_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
+#else
+    #define JSON_HEDLEY_TI_CL7X_VERSION_CHECK(major,minor,patch) (0)
+#endif
+
+#if defined(JSON_HEDLEY_TI_CLPRU_VERSION)
+    #undef JSON_HEDLEY_TI_CLPRU_VERSION
+#endif
+#if defined(__TI_COMPILER_VERSION__) && defined(__PRU__)
+    #define JSON_HEDLEY_TI_CLPRU_VERSION JSON_HEDLEY_VERSION_ENCODE(__TI_COMPILER_VERSION__ / 1000000, (__TI_COMPILER_VERSION__ % 1000000) / 1000, (__TI_COMPILER_VERSION__ % 1000))
+#endif
+
+#if defined(JSON_HEDLEY_TI_CLPRU_VERSION_CHECK)
+    #undef JSON_HEDLEY_TI_CLPRU_VERSION_CHECK
+#endif
+#if defined(JSON_HEDLEY_TI_CLPRU_VERSION)
+    #define JSON_HEDLEY_TI_CLPRU_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_TI_CLPRU_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
+#else
+    #define JSON_HEDLEY_TI_CLPRU_VERSION_CHECK(major,minor,patch) (0)
+#endif
+
+#if defined(JSON_HEDLEY_CRAY_VERSION)
+    #undef JSON_HEDLEY_CRAY_VERSION
+#endif
+#if defined(_CRAYC)
+    #if defined(_RELEASE_PATCHLEVEL)
+        #define JSON_HEDLEY_CRAY_VERSION JSON_HEDLEY_VERSION_ENCODE(_RELEASE_MAJOR, _RELEASE_MINOR, _RELEASE_PATCHLEVEL)
+    #else
+        #define JSON_HEDLEY_CRAY_VERSION JSON_HEDLEY_VERSION_ENCODE(_RELEASE_MAJOR, _RELEASE_MINOR, 0)
+    #endif
+#endif
+
+#if defined(JSON_HEDLEY_CRAY_VERSION_CHECK)
+    #undef JSON_HEDLEY_CRAY_VERSION_CHECK
+#endif
+#if defined(JSON_HEDLEY_CRAY_VERSION)
+    #define JSON_HEDLEY_CRAY_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_CRAY_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
+#else
+    #define JSON_HEDLEY_CRAY_VERSION_CHECK(major,minor,patch) (0)
+#endif
+
+#if defined(JSON_HEDLEY_IAR_VERSION)
+    #undef JSON_HEDLEY_IAR_VERSION
+#endif
+#if defined(__IAR_SYSTEMS_ICC__)
+    #if __VER__ > 1000
+        #define JSON_HEDLEY_IAR_VERSION JSON_HEDLEY_VERSION_ENCODE((__VER__ / 1000000), ((__VER__ / 1000) % 1000), (__VER__ % 1000))
+    #else
+        #define JSON_HEDLEY_IAR_VERSION JSON_HEDLEY_VERSION_ENCODE(__VER__ / 100, __VER__ % 100, 0)
+    #endif
+#endif
+
+#if defined(JSON_HEDLEY_IAR_VERSION_CHECK)
+    #undef JSON_HEDLEY_IAR_VERSION_CHECK
+#endif
+#if defined(JSON_HEDLEY_IAR_VERSION)
+    #define JSON_HEDLEY_IAR_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_IAR_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
+#else
+    #define JSON_HEDLEY_IAR_VERSION_CHECK(major,minor,patch) (0)
+#endif
+
+#if defined(JSON_HEDLEY_TINYC_VERSION)
+    #undef JSON_HEDLEY_TINYC_VERSION
+#endif
+#if defined(__TINYC__)
+    #define JSON_HEDLEY_TINYC_VERSION JSON_HEDLEY_VERSION_ENCODE(__TINYC__ / 1000, (__TINYC__ / 100) % 10, __TINYC__ % 100)
+#endif
+
+#if defined(JSON_HEDLEY_TINYC_VERSION_CHECK)
+    #undef JSON_HEDLEY_TINYC_VERSION_CHECK
+#endif
+#if defined(JSON_HEDLEY_TINYC_VERSION)
+    #define JSON_HEDLEY_TINYC_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_TINYC_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
+#else
+    #define JSON_HEDLEY_TINYC_VERSION_CHECK(major,minor,patch) (0)
+#endif
+
+#if defined(JSON_HEDLEY_DMC_VERSION)
+    #undef JSON_HEDLEY_DMC_VERSION
+#endif
+#if defined(__DMC__)
+    #define JSON_HEDLEY_DMC_VERSION JSON_HEDLEY_VERSION_ENCODE(__DMC__ >> 8, (__DMC__ >> 4) & 0xf, __DMC__ & 0xf)
+#endif
+
+#if defined(JSON_HEDLEY_DMC_VERSION_CHECK)
+    #undef JSON_HEDLEY_DMC_VERSION_CHECK
+#endif
+#if defined(JSON_HEDLEY_DMC_VERSION)
+    #define JSON_HEDLEY_DMC_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_DMC_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
+#else
+    #define JSON_HEDLEY_DMC_VERSION_CHECK(major,minor,patch) (0)
+#endif
+
+#if defined(JSON_HEDLEY_COMPCERT_VERSION)
+    #undef JSON_HEDLEY_COMPCERT_VERSION
+#endif
+#if defined(__COMPCERT_VERSION__)
+    #define JSON_HEDLEY_COMPCERT_VERSION JSON_HEDLEY_VERSION_ENCODE(__COMPCERT_VERSION__ / 10000, (__COMPCERT_VERSION__ / 100) % 100, __COMPCERT_VERSION__ % 100)
+#endif
+
+#if defined(JSON_HEDLEY_COMPCERT_VERSION_CHECK)
+    #undef JSON_HEDLEY_COMPCERT_VERSION_CHECK
+#endif
+#if defined(JSON_HEDLEY_COMPCERT_VERSION)
+    #define JSON_HEDLEY_COMPCERT_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_COMPCERT_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
+#else
+    #define JSON_HEDLEY_COMPCERT_VERSION_CHECK(major,minor,patch) (0)
+#endif
+
+#if defined(JSON_HEDLEY_PELLES_VERSION)
+    #undef JSON_HEDLEY_PELLES_VERSION
+#endif
+#if defined(__POCC__)
+    #define JSON_HEDLEY_PELLES_VERSION JSON_HEDLEY_VERSION_ENCODE(__POCC__ / 100, __POCC__ % 100, 0)
+#endif
+
+#if defined(JSON_HEDLEY_PELLES_VERSION_CHECK)
+    #undef JSON_HEDLEY_PELLES_VERSION_CHECK
+#endif
+#if defined(JSON_HEDLEY_PELLES_VERSION)
+    #define JSON_HEDLEY_PELLES_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_PELLES_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
+#else
+    #define JSON_HEDLEY_PELLES_VERSION_CHECK(major,minor,patch) (0)
+#endif
+
+#if defined(JSON_HEDLEY_MCST_LCC_VERSION)
+    #undef JSON_HEDLEY_MCST_LCC_VERSION
+#endif
+#if defined(__LCC__) && defined(__LCC_MINOR__)
+    #define JSON_HEDLEY_MCST_LCC_VERSION JSON_HEDLEY_VERSION_ENCODE(__LCC__ / 100, __LCC__ % 100, __LCC_MINOR__)
+#endif
+
+#if defined(JSON_HEDLEY_MCST_LCC_VERSION_CHECK)
+    #undef JSON_HEDLEY_MCST_LCC_VERSION_CHECK
+#endif
+#if defined(JSON_HEDLEY_MCST_LCC_VERSION)
+    #define JSON_HEDLEY_MCST_LCC_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_MCST_LCC_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
+#else
+    #define JSON_HEDLEY_MCST_LCC_VERSION_CHECK(major,minor,patch) (0)
+#endif
+
+#if defined(JSON_HEDLEY_GCC_VERSION)
+    #undef JSON_HEDLEY_GCC_VERSION
+#endif
+#if \
+    defined(JSON_HEDLEY_GNUC_VERSION) && \
+    !defined(__clang__) && \
+    !defined(JSON_HEDLEY_INTEL_VERSION) && \
+    !defined(JSON_HEDLEY_PGI_VERSION) && \
+    !defined(JSON_HEDLEY_ARM_VERSION) && \
+    !defined(JSON_HEDLEY_CRAY_VERSION) && \
+    !defined(JSON_HEDLEY_TI_VERSION) && \
+    !defined(JSON_HEDLEY_TI_ARMCL_VERSION) && \
+    !defined(JSON_HEDLEY_TI_CL430_VERSION) && \
+    !defined(JSON_HEDLEY_TI_CL2000_VERSION) && \
+    !defined(JSON_HEDLEY_TI_CL6X_VERSION) && \
+    !defined(JSON_HEDLEY_TI_CL7X_VERSION) && \
+    !defined(JSON_HEDLEY_TI_CLPRU_VERSION) && \
+    !defined(__COMPCERT__) && \
+    !defined(JSON_HEDLEY_MCST_LCC_VERSION)
+    #define JSON_HEDLEY_GCC_VERSION JSON_HEDLEY_GNUC_VERSION
+#endif
+
+#if defined(JSON_HEDLEY_GCC_VERSION_CHECK)
+    #undef JSON_HEDLEY_GCC_VERSION_CHECK
+#endif
+#if defined(JSON_HEDLEY_GCC_VERSION)
+    #define JSON_HEDLEY_GCC_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_GCC_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
+#else
+    #define JSON_HEDLEY_GCC_VERSION_CHECK(major,minor,patch) (0)
+#endif
+
+#if defined(JSON_HEDLEY_HAS_ATTRIBUTE)
+    #undef JSON_HEDLEY_HAS_ATTRIBUTE
+#endif
+#if \
+  defined(__has_attribute) && \
+  ( \
+    (!defined(JSON_HEDLEY_IAR_VERSION) || JSON_HEDLEY_IAR_VERSION_CHECK(8,5,9)) \
+  )
+#  define JSON_HEDLEY_HAS_ATTRIBUTE(attribute) __has_attribute(attribute)
+#else
+#  define JSON_HEDLEY_HAS_ATTRIBUTE(attribute) (0)
+#endif
+
+#if defined(JSON_HEDLEY_GNUC_HAS_ATTRIBUTE)
+    #undef JSON_HEDLEY_GNUC_HAS_ATTRIBUTE
+#endif
+#if defined(__has_attribute)
+    #define JSON_HEDLEY_GNUC_HAS_ATTRIBUTE(attribute,major,minor,patch) JSON_HEDLEY_HAS_ATTRIBUTE(attribute)
+#else
+    #define JSON_HEDLEY_GNUC_HAS_ATTRIBUTE(attribute,major,minor,patch) JSON_HEDLEY_GNUC_VERSION_CHECK(major,minor,patch)
+#endif
+
+#if defined(JSON_HEDLEY_GCC_HAS_ATTRIBUTE)
+    #undef JSON_HEDLEY_GCC_HAS_ATTRIBUTE
+#endif
+#if defined(__has_attribute)
+    #define JSON_HEDLEY_GCC_HAS_ATTRIBUTE(attribute,major,minor,patch) JSON_HEDLEY_HAS_ATTRIBUTE(attribute)
+#else
+    #define JSON_HEDLEY_GCC_HAS_ATTRIBUTE(attribute,major,minor,patch) JSON_HEDLEY_GCC_VERSION_CHECK(major,minor,patch)
+#endif
+
+#if defined(JSON_HEDLEY_HAS_CPP_ATTRIBUTE)
+    #undef JSON_HEDLEY_HAS_CPP_ATTRIBUTE
+#endif
+#if \
+    defined(__has_cpp_attribute) && \
+    defined(__cplusplus) && \
+    (!defined(JSON_HEDLEY_SUNPRO_VERSION) || JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,15,0))
+    #define JSON_HEDLEY_HAS_CPP_ATTRIBUTE(attribute) __has_cpp_attribute(attribute)
+#else
+    #define JSON_HEDLEY_HAS_CPP_ATTRIBUTE(attribute) (0)
+#endif
+
+#if defined(JSON_HEDLEY_HAS_CPP_ATTRIBUTE_NS)
+    #undef JSON_HEDLEY_HAS_CPP_ATTRIBUTE_NS
+#endif
+#if !defined(__cplusplus) || !defined(__has_cpp_attribute)
+    #define JSON_HEDLEY_HAS_CPP_ATTRIBUTE_NS(ns,attribute) (0)
+#elif \
+    !defined(JSON_HEDLEY_PGI_VERSION) && \
+    !defined(JSON_HEDLEY_IAR_VERSION) && \
+    (!defined(JSON_HEDLEY_SUNPRO_VERSION) || JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,15,0)) && \
+    (!defined(JSON_HEDLEY_MSVC_VERSION) || JSON_HEDLEY_MSVC_VERSION_CHECK(19,20,0))
+    #define JSON_HEDLEY_HAS_CPP_ATTRIBUTE_NS(ns,attribute) JSON_HEDLEY_HAS_CPP_ATTRIBUTE(ns::attribute)
+#else
+    #define JSON_HEDLEY_HAS_CPP_ATTRIBUTE_NS(ns,attribute) (0)
+#endif
+
+#if defined(JSON_HEDLEY_GNUC_HAS_CPP_ATTRIBUTE)
+    #undef JSON_HEDLEY_GNUC_HAS_CPP_ATTRIBUTE
+#endif
+#if defined(__has_cpp_attribute) && defined(__cplusplus)
+    #define JSON_HEDLEY_GNUC_HAS_CPP_ATTRIBUTE(attribute,major,minor,patch) __has_cpp_attribute(attribute)
+#else
+    #define JSON_HEDLEY_GNUC_HAS_CPP_ATTRIBUTE(attribute,major,minor,patch) JSON_HEDLEY_GNUC_VERSION_CHECK(major,minor,patch)
+#endif
+
+#if defined(JSON_HEDLEY_GCC_HAS_CPP_ATTRIBUTE)
+    #undef JSON_HEDLEY_GCC_HAS_CPP_ATTRIBUTE
+#endif
+#if defined(__has_cpp_attribute) && defined(__cplusplus)
+    #define JSON_HEDLEY_GCC_HAS_CPP_ATTRIBUTE(attribute,major,minor,patch) __has_cpp_attribute(attribute)
+#else
+    #define JSON_HEDLEY_GCC_HAS_CPP_ATTRIBUTE(attribute,major,minor,patch) JSON_HEDLEY_GCC_VERSION_CHECK(major,minor,patch)
+#endif
+
+#if defined(JSON_HEDLEY_HAS_BUILTIN)
+    #undef JSON_HEDLEY_HAS_BUILTIN
+#endif
+#if defined(__has_builtin)
+    #define JSON_HEDLEY_HAS_BUILTIN(builtin) __has_builtin(builtin)
+#else
+    #define JSON_HEDLEY_HAS_BUILTIN(builtin) (0)
+#endif
+
+#if defined(JSON_HEDLEY_GNUC_HAS_BUILTIN)
+    #undef JSON_HEDLEY_GNUC_HAS_BUILTIN
+#endif
+#if defined(__has_builtin)
+    #define JSON_HEDLEY_GNUC_HAS_BUILTIN(builtin,major,minor,patch) __has_builtin(builtin)
+#else
+    #define JSON_HEDLEY_GNUC_HAS_BUILTIN(builtin,major,minor,patch) JSON_HEDLEY_GNUC_VERSION_CHECK(major,minor,patch)
+#endif
+
+#if defined(JSON_HEDLEY_GCC_HAS_BUILTIN)
+    #undef JSON_HEDLEY_GCC_HAS_BUILTIN
+#endif
+#if defined(__has_builtin)
+    #define JSON_HEDLEY_GCC_HAS_BUILTIN(builtin,major,minor,patch) __has_builtin(builtin)
+#else
+    #define JSON_HEDLEY_GCC_HAS_BUILTIN(builtin,major,minor,patch) JSON_HEDLEY_GCC_VERSION_CHECK(major,minor,patch)
+#endif
+
+#if defined(JSON_HEDLEY_HAS_FEATURE)
+    #undef JSON_HEDLEY_HAS_FEATURE
+#endif
+#if defined(__has_feature)
+    #define JSON_HEDLEY_HAS_FEATURE(feature) __has_feature(feature)
+#else
+    #define JSON_HEDLEY_HAS_FEATURE(feature) (0)
+#endif
+
+#if defined(JSON_HEDLEY_GNUC_HAS_FEATURE)
+    #undef JSON_HEDLEY_GNUC_HAS_FEATURE
+#endif
+#if defined(__has_feature)
+    #define JSON_HEDLEY_GNUC_HAS_FEATURE(feature,major,minor,patch) __has_feature(feature)
+#else
+    #define JSON_HEDLEY_GNUC_HAS_FEATURE(feature,major,minor,patch) JSON_HEDLEY_GNUC_VERSION_CHECK(major,minor,patch)
+#endif
+
+#if defined(JSON_HEDLEY_GCC_HAS_FEATURE)
+    #undef JSON_HEDLEY_GCC_HAS_FEATURE
+#endif
+#if defined(__has_feature)
+    #define JSON_HEDLEY_GCC_HAS_FEATURE(feature,major,minor,patch) __has_feature(feature)
+#else
+    #define JSON_HEDLEY_GCC_HAS_FEATURE(feature,major,minor,patch) JSON_HEDLEY_GCC_VERSION_CHECK(major,minor,patch)
+#endif
+
+#if defined(JSON_HEDLEY_HAS_EXTENSION)
+    #undef JSON_HEDLEY_HAS_EXTENSION
+#endif
+#if defined(__has_extension)
+    #define JSON_HEDLEY_HAS_EXTENSION(extension) __has_extension(extension)
+#else
+    #define JSON_HEDLEY_HAS_EXTENSION(extension) (0)
+#endif
+
+#if defined(JSON_HEDLEY_GNUC_HAS_EXTENSION)
+    #undef JSON_HEDLEY_GNUC_HAS_EXTENSION
+#endif
+#if defined(__has_extension)
+    #define JSON_HEDLEY_GNUC_HAS_EXTENSION(extension,major,minor,patch) __has_extension(extension)
+#else
+    #define JSON_HEDLEY_GNUC_HAS_EXTENSION(extension,major,minor,patch) JSON_HEDLEY_GNUC_VERSION_CHECK(major,minor,patch)
+#endif
+
+#if defined(JSON_HEDLEY_GCC_HAS_EXTENSION)
+    #undef JSON_HEDLEY_GCC_HAS_EXTENSION
+#endif
+#if defined(__has_extension)
+    #define JSON_HEDLEY_GCC_HAS_EXTENSION(extension,major,minor,patch) __has_extension(extension)
+#else
+    #define JSON_HEDLEY_GCC_HAS_EXTENSION(extension,major,minor,patch) JSON_HEDLEY_GCC_VERSION_CHECK(major,minor,patch)
+#endif
+
+#if defined(JSON_HEDLEY_HAS_DECLSPEC_ATTRIBUTE)
+    #undef JSON_HEDLEY_HAS_DECLSPEC_ATTRIBUTE
+#endif
+#if defined(__has_declspec_attribute)
+    #define JSON_HEDLEY_HAS_DECLSPEC_ATTRIBUTE(attribute) __has_declspec_attribute(attribute)
+#else
+    #define JSON_HEDLEY_HAS_DECLSPEC_ATTRIBUTE(attribute) (0)
+#endif
+
+#if defined(JSON_HEDLEY_GNUC_HAS_DECLSPEC_ATTRIBUTE)
+    #undef JSON_HEDLEY_GNUC_HAS_DECLSPEC_ATTRIBUTE
+#endif
+#if defined(__has_declspec_attribute)
+    #define JSON_HEDLEY_GNUC_HAS_DECLSPEC_ATTRIBUTE(attribute,major,minor,patch) __has_declspec_attribute(attribute)
+#else
+    #define JSON_HEDLEY_GNUC_HAS_DECLSPEC_ATTRIBUTE(attribute,major,minor,patch) JSON_HEDLEY_GNUC_VERSION_CHECK(major,minor,patch)
+#endif
+
+#if defined(JSON_HEDLEY_GCC_HAS_DECLSPEC_ATTRIBUTE)
+    #undef JSON_HEDLEY_GCC_HAS_DECLSPEC_ATTRIBUTE
+#endif
+#if defined(__has_declspec_attribute)
+    #define JSON_HEDLEY_GCC_HAS_DECLSPEC_ATTRIBUTE(attribute,major,minor,patch) __has_declspec_attribute(attribute)
+#else
+    #define JSON_HEDLEY_GCC_HAS_DECLSPEC_ATTRIBUTE(attribute,major,minor,patch) JSON_HEDLEY_GCC_VERSION_CHECK(major,minor,patch)
+#endif
+
+#if defined(JSON_HEDLEY_HAS_WARNING)
+    #undef JSON_HEDLEY_HAS_WARNING
+#endif
+#if defined(__has_warning)
+    #define JSON_HEDLEY_HAS_WARNING(warning) __has_warning(warning)
+#else
+    #define JSON_HEDLEY_HAS_WARNING(warning) (0)
+#endif
+
+#if defined(JSON_HEDLEY_GNUC_HAS_WARNING)
+    #undef JSON_HEDLEY_GNUC_HAS_WARNING
+#endif
+#if defined(__has_warning)
+    #define JSON_HEDLEY_GNUC_HAS_WARNING(warning,major,minor,patch) __has_warning(warning)
+#else
+    #define JSON_HEDLEY_GNUC_HAS_WARNING(warning,major,minor,patch) JSON_HEDLEY_GNUC_VERSION_CHECK(major,minor,patch)
+#endif
+
+#if defined(JSON_HEDLEY_GCC_HAS_WARNING)
+    #undef JSON_HEDLEY_GCC_HAS_WARNING
+#endif
+#if defined(__has_warning)
+    #define JSON_HEDLEY_GCC_HAS_WARNING(warning,major,minor,patch) __has_warning(warning)
+#else
+    #define JSON_HEDLEY_GCC_HAS_WARNING(warning,major,minor,patch) JSON_HEDLEY_GCC_VERSION_CHECK(major,minor,patch)
+#endif
+
+#if \
+    (defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L)) || \
+    defined(__clang__) || \
+    JSON_HEDLEY_GCC_VERSION_CHECK(3,0,0) || \
+    JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0) || \
+    JSON_HEDLEY_IAR_VERSION_CHECK(8,0,0) || \
+    JSON_HEDLEY_PGI_VERSION_CHECK(18,4,0) || \
+    JSON_HEDLEY_ARM_VERSION_CHECK(4,1,0) || \
+    JSON_HEDLEY_TI_VERSION_CHECK(15,12,0) || \
+    JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(4,7,0) || \
+    JSON_HEDLEY_TI_CL430_VERSION_CHECK(2,0,1) || \
+    JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,1,0) || \
+    JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,0,0) || \
+    JSON_HEDLEY_TI_CL7X_VERSION_CHECK(1,2,0) || \
+    JSON_HEDLEY_TI_CLPRU_VERSION_CHECK(2,1,0) || \
+    JSON_HEDLEY_CRAY_VERSION_CHECK(5,0,0) || \
+    JSON_HEDLEY_TINYC_VERSION_CHECK(0,9,17) || \
+    JSON_HEDLEY_SUNPRO_VERSION_CHECK(8,0,0) || \
+    (JSON_HEDLEY_IBM_VERSION_CHECK(10,1,0) && defined(__C99_PRAGMA_OPERATOR))
+    #define JSON_HEDLEY_PRAGMA(value) _Pragma(#value)
+#elif JSON_HEDLEY_MSVC_VERSION_CHECK(15,0,0)
+    #define JSON_HEDLEY_PRAGMA(value) __pragma(value)
+#else
+    #define JSON_HEDLEY_PRAGMA(value)
+#endif
+
+#if defined(JSON_HEDLEY_DIAGNOSTIC_PUSH)
+    #undef JSON_HEDLEY_DIAGNOSTIC_PUSH
+#endif
+#if defined(JSON_HEDLEY_DIAGNOSTIC_POP)
+    #undef JSON_HEDLEY_DIAGNOSTIC_POP
+#endif
+#if defined(__clang__)
+    #define JSON_HEDLEY_DIAGNOSTIC_PUSH _Pragma("clang diagnostic push")
+    #define JSON_HEDLEY_DIAGNOSTIC_POP _Pragma("clang diagnostic pop")
+#elif JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_PUSH _Pragma("warning(push)")
+    #define JSON_HEDLEY_DIAGNOSTIC_POP _Pragma("warning(pop)")
+#elif JSON_HEDLEY_GCC_VERSION_CHECK(4,6,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_PUSH _Pragma("GCC diagnostic push")
+    #define JSON_HEDLEY_DIAGNOSTIC_POP _Pragma("GCC diagnostic pop")
+#elif \
+    JSON_HEDLEY_MSVC_VERSION_CHECK(15,0,0) || \
+    JSON_HEDLEY_INTEL_CL_VERSION_CHECK(2021,1,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_PUSH __pragma(warning(push))
+    #define JSON_HEDLEY_DIAGNOSTIC_POP __pragma(warning(pop))
+#elif JSON_HEDLEY_ARM_VERSION_CHECK(5,6,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_PUSH _Pragma("push")
+    #define JSON_HEDLEY_DIAGNOSTIC_POP _Pragma("pop")
+#elif \
+    JSON_HEDLEY_TI_VERSION_CHECK(15,12,0) || \
+    JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(5,2,0) || \
+    JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,4,0) || \
+    JSON_HEDLEY_TI_CL6X_VERSION_CHECK(8,1,0) || \
+    JSON_HEDLEY_TI_CL7X_VERSION_CHECK(1,2,0) || \
+    JSON_HEDLEY_TI_CLPRU_VERSION_CHECK(2,1,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_PUSH _Pragma("diag_push")
+    #define JSON_HEDLEY_DIAGNOSTIC_POP _Pragma("diag_pop")
+#elif JSON_HEDLEY_PELLES_VERSION_CHECK(2,90,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_PUSH _Pragma("warning(push)")
+    #define JSON_HEDLEY_DIAGNOSTIC_POP _Pragma("warning(pop)")
+#else
+    #define JSON_HEDLEY_DIAGNOSTIC_PUSH
+    #define JSON_HEDLEY_DIAGNOSTIC_POP
+#endif
+
+/* JSON_HEDLEY_DIAGNOSTIC_DISABLE_CPP98_COMPAT_WRAP_ is for
+   HEDLEY INTERNAL USE ONLY.  API subject to change without notice. */
+#if defined(JSON_HEDLEY_DIAGNOSTIC_DISABLE_CPP98_COMPAT_WRAP_)
+    #undef JSON_HEDLEY_DIAGNOSTIC_DISABLE_CPP98_COMPAT_WRAP_
+#endif
+#if defined(__cplusplus)
+#  if JSON_HEDLEY_HAS_WARNING("-Wc++98-compat")
+#    if JSON_HEDLEY_HAS_WARNING("-Wc++17-extensions")
+#      if JSON_HEDLEY_HAS_WARNING("-Wc++1z-extensions")
+#        define JSON_HEDLEY_DIAGNOSTIC_DISABLE_CPP98_COMPAT_WRAP_(xpr) \
+    JSON_HEDLEY_DIAGNOSTIC_PUSH \
+    _Pragma("clang diagnostic ignored \"-Wc++98-compat\"") \
+    _Pragma("clang diagnostic ignored \"-Wc++17-extensions\"") \
+    _Pragma("clang diagnostic ignored \"-Wc++1z-extensions\"") \
+    xpr \
+    JSON_HEDLEY_DIAGNOSTIC_POP
+#      else
+#        define JSON_HEDLEY_DIAGNOSTIC_DISABLE_CPP98_COMPAT_WRAP_(xpr) \
+    JSON_HEDLEY_DIAGNOSTIC_PUSH \
+    _Pragma("clang diagnostic ignored \"-Wc++98-compat\"") \
+    _Pragma("clang diagnostic ignored \"-Wc++17-extensions\"") \
+    xpr \
+    JSON_HEDLEY_DIAGNOSTIC_POP
+#      endif
+#    else
+#      define JSON_HEDLEY_DIAGNOSTIC_DISABLE_CPP98_COMPAT_WRAP_(xpr) \
+    JSON_HEDLEY_DIAGNOSTIC_PUSH \
+    _Pragma("clang diagnostic ignored \"-Wc++98-compat\"") \
+    xpr \
+    JSON_HEDLEY_DIAGNOSTIC_POP
+#    endif
+#  endif
+#endif
+#if !defined(JSON_HEDLEY_DIAGNOSTIC_DISABLE_CPP98_COMPAT_WRAP_)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_CPP98_COMPAT_WRAP_(x) x
+#endif
+
+#if defined(JSON_HEDLEY_CONST_CAST)
+    #undef JSON_HEDLEY_CONST_CAST
+#endif
+#if defined(__cplusplus)
+#  define JSON_HEDLEY_CONST_CAST(T, expr) (const_cast<T>(expr))
+#elif \
+  JSON_HEDLEY_HAS_WARNING("-Wcast-qual") || \
+  JSON_HEDLEY_GCC_VERSION_CHECK(4,6,0) || \
+  JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0)
+#  define JSON_HEDLEY_CONST_CAST(T, expr) (__extension__ ({ \
+        JSON_HEDLEY_DIAGNOSTIC_PUSH \
+        JSON_HEDLEY_DIAGNOSTIC_DISABLE_CAST_QUAL \
+        ((T) (expr)); \
+        JSON_HEDLEY_DIAGNOSTIC_POP \
+    }))
+#else
+#  define JSON_HEDLEY_CONST_CAST(T, expr) ((T) (expr))
+#endif
+
+#if defined(JSON_HEDLEY_REINTERPRET_CAST)
+    #undef JSON_HEDLEY_REINTERPRET_CAST
+#endif
+#if defined(__cplusplus)
+    #define JSON_HEDLEY_REINTERPRET_CAST(T, expr) (reinterpret_cast<T>(expr))
+#else
+    #define JSON_HEDLEY_REINTERPRET_CAST(T, expr) ((T) (expr))
+#endif
+
+#if defined(JSON_HEDLEY_STATIC_CAST)
+    #undef JSON_HEDLEY_STATIC_CAST
+#endif
+#if defined(__cplusplus)
+    #define JSON_HEDLEY_STATIC_CAST(T, expr) (static_cast<T>(expr))
+#else
+    #define JSON_HEDLEY_STATIC_CAST(T, expr) ((T) (expr))
+#endif
+
+#if defined(JSON_HEDLEY_CPP_CAST)
+    #undef JSON_HEDLEY_CPP_CAST
+#endif
+#if defined(__cplusplus)
+#  if JSON_HEDLEY_HAS_WARNING("-Wold-style-cast")
+#    define JSON_HEDLEY_CPP_CAST(T, expr) \
+    JSON_HEDLEY_DIAGNOSTIC_PUSH \
+    _Pragma("clang diagnostic ignored \"-Wold-style-cast\"") \
+    ((T) (expr)) \
+    JSON_HEDLEY_DIAGNOSTIC_POP
+#  elif JSON_HEDLEY_IAR_VERSION_CHECK(8,3,0)
+#    define JSON_HEDLEY_CPP_CAST(T, expr) \
+    JSON_HEDLEY_DIAGNOSTIC_PUSH \
+    _Pragma("diag_suppress=Pe137") \
+    JSON_HEDLEY_DIAGNOSTIC_POP
+#  else
+#    define JSON_HEDLEY_CPP_CAST(T, expr) ((T) (expr))
+#  endif
+#else
+#  define JSON_HEDLEY_CPP_CAST(T, expr) (expr)
+#endif
+
+#if defined(JSON_HEDLEY_DIAGNOSTIC_DISABLE_DEPRECATED)
+    #undef JSON_HEDLEY_DIAGNOSTIC_DISABLE_DEPRECATED
+#endif
+#if JSON_HEDLEY_HAS_WARNING("-Wdeprecated-declarations")
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_DEPRECATED _Pragma("clang diagnostic ignored \"-Wdeprecated-declarations\"")
+#elif JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_DEPRECATED _Pragma("warning(disable:1478 1786)")
+#elif JSON_HEDLEY_INTEL_CL_VERSION_CHECK(2021,1,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_DEPRECATED __pragma(warning(disable:1478 1786))
+#elif JSON_HEDLEY_PGI_VERSION_CHECK(20,7,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_DEPRECATED _Pragma("diag_suppress 1215,1216,1444,1445")
+#elif JSON_HEDLEY_PGI_VERSION_CHECK(17,10,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_DEPRECATED _Pragma("diag_suppress 1215,1444")
+#elif JSON_HEDLEY_GCC_VERSION_CHECK(4,3,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_DEPRECATED _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"")
+#elif JSON_HEDLEY_MSVC_VERSION_CHECK(15,0,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_DEPRECATED __pragma(warning(disable:4996))
+#elif JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_DEPRECATED _Pragma("diag_suppress 1215,1444")
+#elif \
+    JSON_HEDLEY_TI_VERSION_CHECK(15,12,0) || \
+    (JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(4,8,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(5,2,0) || \
+    (JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,0,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,4,0) || \
+    (JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,0,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,3,0) || \
+    (JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,2,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,5,0) || \
+    JSON_HEDLEY_TI_CL7X_VERSION_CHECK(1,2,0) || \
+    JSON_HEDLEY_TI_CLPRU_VERSION_CHECK(2,1,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_DEPRECATED _Pragma("diag_suppress 1291,1718")
+#elif JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,13,0) && !defined(__cplusplus)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_DEPRECATED _Pragma("error_messages(off,E_DEPRECATED_ATT,E_DEPRECATED_ATT_MESS)")
+#elif JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,13,0) && defined(__cplusplus)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_DEPRECATED _Pragma("error_messages(off,symdeprecated,symdeprecated2)")
+#elif JSON_HEDLEY_IAR_VERSION_CHECK(8,0,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_DEPRECATED _Pragma("diag_suppress=Pe1444,Pe1215")
+#elif JSON_HEDLEY_PELLES_VERSION_CHECK(2,90,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_DEPRECATED _Pragma("warn(disable:2241)")
+#else
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_DEPRECATED
+#endif
+
+#if defined(JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_PRAGMAS)
+    #undef JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_PRAGMAS
+#endif
+#if JSON_HEDLEY_HAS_WARNING("-Wunknown-pragmas")
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_PRAGMAS _Pragma("clang diagnostic ignored \"-Wunknown-pragmas\"")
+#elif JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_PRAGMAS _Pragma("warning(disable:161)")
+#elif JSON_HEDLEY_INTEL_CL_VERSION_CHECK(2021,1,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_PRAGMAS __pragma(warning(disable:161))
+#elif JSON_HEDLEY_PGI_VERSION_CHECK(17,10,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_PRAGMAS _Pragma("diag_suppress 1675")
+#elif JSON_HEDLEY_GCC_VERSION_CHECK(4,3,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_PRAGMAS _Pragma("GCC diagnostic ignored \"-Wunknown-pragmas\"")
+#elif JSON_HEDLEY_MSVC_VERSION_CHECK(15,0,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_PRAGMAS __pragma(warning(disable:4068))
+#elif \
+    JSON_HEDLEY_TI_VERSION_CHECK(16,9,0) || \
+    JSON_HEDLEY_TI_CL6X_VERSION_CHECK(8,0,0) || \
+    JSON_HEDLEY_TI_CL7X_VERSION_CHECK(1,2,0) || \
+    JSON_HEDLEY_TI_CLPRU_VERSION_CHECK(2,3,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_PRAGMAS _Pragma("diag_suppress 163")
+#elif JSON_HEDLEY_TI_CL6X_VERSION_CHECK(8,0,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_PRAGMAS _Pragma("diag_suppress 163")
+#elif JSON_HEDLEY_IAR_VERSION_CHECK(8,0,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_PRAGMAS _Pragma("diag_suppress=Pe161")
+#elif JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_PRAGMAS _Pragma("diag_suppress 161")
+#else
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_PRAGMAS
+#endif
+
+#if defined(JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_CPP_ATTRIBUTES)
+    #undef JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_CPP_ATTRIBUTES
+#endif
+#if JSON_HEDLEY_HAS_WARNING("-Wunknown-attributes")
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_CPP_ATTRIBUTES _Pragma("clang diagnostic ignored \"-Wunknown-attributes\"")
+#elif JSON_HEDLEY_GCC_VERSION_CHECK(4,6,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_CPP_ATTRIBUTES _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"")
+#elif JSON_HEDLEY_INTEL_VERSION_CHECK(17,0,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_CPP_ATTRIBUTES _Pragma("warning(disable:1292)")
+#elif JSON_HEDLEY_INTEL_CL_VERSION_CHECK(2021,1,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_CPP_ATTRIBUTES __pragma(warning(disable:1292))
+#elif JSON_HEDLEY_MSVC_VERSION_CHECK(19,0,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_CPP_ATTRIBUTES __pragma(warning(disable:5030))
+#elif JSON_HEDLEY_PGI_VERSION_CHECK(20,7,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_CPP_ATTRIBUTES _Pragma("diag_suppress 1097,1098")
+#elif JSON_HEDLEY_PGI_VERSION_CHECK(17,10,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_CPP_ATTRIBUTES _Pragma("diag_suppress 1097")
+#elif JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,14,0) && defined(__cplusplus)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_CPP_ATTRIBUTES _Pragma("error_messages(off,attrskipunsup)")
+#elif \
+    JSON_HEDLEY_TI_VERSION_CHECK(18,1,0) || \
+    JSON_HEDLEY_TI_CL6X_VERSION_CHECK(8,3,0) || \
+    JSON_HEDLEY_TI_CL7X_VERSION_CHECK(1,2,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_CPP_ATTRIBUTES _Pragma("diag_suppress 1173")
+#elif JSON_HEDLEY_IAR_VERSION_CHECK(8,0,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_CPP_ATTRIBUTES _Pragma("diag_suppress=Pe1097")
+#elif JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_CPP_ATTRIBUTES _Pragma("diag_suppress 1097")
+#else
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_CPP_ATTRIBUTES
+#endif
+
+#if defined(JSON_HEDLEY_DIAGNOSTIC_DISABLE_CAST_QUAL)
+    #undef JSON_HEDLEY_DIAGNOSTIC_DISABLE_CAST_QUAL
+#endif
+#if JSON_HEDLEY_HAS_WARNING("-Wcast-qual")
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_CAST_QUAL _Pragma("clang diagnostic ignored \"-Wcast-qual\"")
+#elif JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_CAST_QUAL _Pragma("warning(disable:2203 2331)")
+#elif JSON_HEDLEY_GCC_VERSION_CHECK(3,0,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_CAST_QUAL _Pragma("GCC diagnostic ignored \"-Wcast-qual\"")
+#else
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_CAST_QUAL
+#endif
+
+#if defined(JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNUSED_FUNCTION)
+    #undef JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNUSED_FUNCTION
+#endif
+#if JSON_HEDLEY_HAS_WARNING("-Wunused-function")
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNUSED_FUNCTION _Pragma("clang diagnostic ignored \"-Wunused-function\"")
+#elif JSON_HEDLEY_GCC_VERSION_CHECK(3,4,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNUSED_FUNCTION _Pragma("GCC diagnostic ignored \"-Wunused-function\"")
+#elif JSON_HEDLEY_MSVC_VERSION_CHECK(1,0,0)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNUSED_FUNCTION __pragma(warning(disable:4505))
+#elif JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10)
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNUSED_FUNCTION _Pragma("diag_suppress 3142")
+#else
+    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNUSED_FUNCTION
+#endif
+
+#if defined(JSON_HEDLEY_DEPRECATED)
+    #undef JSON_HEDLEY_DEPRECATED
+#endif
+#if defined(JSON_HEDLEY_DEPRECATED_FOR)
+    #undef JSON_HEDLEY_DEPRECATED_FOR
+#endif
+#if \
+    JSON_HEDLEY_MSVC_VERSION_CHECK(14,0,0) || \
+    JSON_HEDLEY_INTEL_CL_VERSION_CHECK(2021,1,0)
+    #define JSON_HEDLEY_DEPRECATED(since) __declspec(deprecated("Since " # since))
+    #define JSON_HEDLEY_DEPRECATED_FOR(since, replacement) __declspec(deprecated("Since " #since "; use " #replacement))
+#elif \
+    (JSON_HEDLEY_HAS_EXTENSION(attribute_deprecated_with_message) && !defined(JSON_HEDLEY_IAR_VERSION)) || \
+    JSON_HEDLEY_GCC_VERSION_CHECK(4,5,0) || \
+    JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0) || \
+    JSON_HEDLEY_ARM_VERSION_CHECK(5,6,0) || \
+    JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,13,0) || \
+    JSON_HEDLEY_PGI_VERSION_CHECK(17,10,0) || \
+    JSON_HEDLEY_TI_VERSION_CHECK(18,1,0) || \
+    JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(18,1,0) || \
+    JSON_HEDLEY_TI_CL6X_VERSION_CHECK(8,3,0) || \
+    JSON_HEDLEY_TI_CL7X_VERSION_CHECK(1,2,0) || \
+    JSON_HEDLEY_TI_CLPRU_VERSION_CHECK(2,3,0) || \
+    JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10)
+    #define JSON_HEDLEY_DEPRECATED(since) __attribute__((__deprecated__("Since " #since)))
+    #define JSON_HEDLEY_DEPRECATED_FOR(since, replacement) __attribute__((__deprecated__("Since " #since "; use " #replacement)))
+#elif defined(__cplusplus) && (__cplusplus >= 201402L)
+    #define JSON_HEDLEY_DEPRECATED(since) JSON_HEDLEY_DIAGNOSTIC_DISABLE_CPP98_COMPAT_WRAP_([[deprecated("Since " #since)]])
+    #define JSON_HEDLEY_DEPRECATED_FOR(since, replacement) JSON_HEDLEY_DIAGNOSTIC_DISABLE_CPP98_COMPAT_WRAP_([[deprecated("Since " #since "; use " #replacement)]])
+#elif \
+    JSON_HEDLEY_HAS_ATTRIBUTE(deprecated) || \
+    JSON_HEDLEY_GCC_VERSION_CHECK(3,1,0) || \
+    JSON_HEDLEY_ARM_VERSION_CHECK(4,1,0) || \
+    JSON_HEDLEY_TI_VERSION_CHECK(15,12,0) || \
+    (JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(4,8,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(5,2,0) || \
+    (JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,0,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,4,0) || \
+    (JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,0,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,3,0) || \
+    (JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,2,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,5,0) || \
+    JSON_HEDLEY_TI_CL7X_VERSION_CHECK(1,2,0) || \
+    JSON_HEDLEY_TI_CLPRU_VERSION_CHECK(2,1,0) || \
+    JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10) || \
+    JSON_HEDLEY_IAR_VERSION_CHECK(8,10,0)
+    #define JSON_HEDLEY_DEPRECATED(since) __attribute__((__deprecated__))
+    #define JSON_HEDLEY_DEPRECATED_FOR(since, replacement) __attribute__((__deprecated__))
+#elif \
+    JSON_HEDLEY_MSVC_VERSION_CHECK(13,10,0) || \
+    JSON_HEDLEY_PELLES_VERSION_CHECK(6,50,0) || \
+    JSON_HEDLEY_INTEL_CL_VERSION_CHECK(2021,1,0)
+    #define JSON_HEDLEY_DEPRECATED(since) __declspec(deprecated)
+    #define JSON_HEDLEY_DEPRECATED_FOR(since, replacement) __declspec(deprecated)
+#elif JSON_HEDLEY_IAR_VERSION_CHECK(8,0,0)
+    #define JSON_HEDLEY_DEPRECATED(since) _Pragma("deprecated")
+    #define JSON_HEDLEY_DEPRECATED_FOR(since, replacement) _Pragma("deprecated")
+#else
+    #define JSON_HEDLEY_DEPRECATED(since)
+    #define JSON_HEDLEY_DEPRECATED_FOR(since, replacement)
+#endif
+
+#if defined(JSON_HEDLEY_UNAVAILABLE)
+    #undef JSON_HEDLEY_UNAVAILABLE
+#endif
+#if \
+    JSON_HEDLEY_HAS_ATTRIBUTE(warning) || \
+    JSON_HEDLEY_GCC_VERSION_CHECK(4,3,0) || \
+    JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0) || \
+    JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10)
+    #define JSON_HEDLEY_UNAVAILABLE(available_since) __attribute__((__warning__("Not available until " #available_since)))
+#else
+    #define JSON_HEDLEY_UNAVAILABLE(available_since)
+#endif
+
+#if defined(JSON_HEDLEY_WARN_UNUSED_RESULT)
+    #undef JSON_HEDLEY_WARN_UNUSED_RESULT
+#endif
+#if defined(JSON_HEDLEY_WARN_UNUSED_RESULT_MSG)
+    #undef JSON_HEDLEY_WARN_UNUSED_RESULT_MSG
+#endif
+#if \
+    JSON_HEDLEY_HAS_ATTRIBUTE(warn_unused_result) || \
+    JSON_HEDLEY_GCC_VERSION_CHECK(3,4,0) || \
+    JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0) || \
+    JSON_HEDLEY_TI_VERSION_CHECK(15,12,0) || \
+    (JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(4,8,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(5,2,0) || \
+    (JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,0,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,4,0) || \
+    (JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,0,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,3,0) || \
+    (JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,2,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,5,0) || \
+    JSON_HEDLEY_TI_CL7X_VERSION_CHECK(1,2,0) || \
+    JSON_HEDLEY_TI_CLPRU_VERSION_CHECK(2,1,0) || \
+    (JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,15,0) && defined(__cplusplus)) || \
+    JSON_HEDLEY_PGI_VERSION_CHECK(17,10,0) || \
+    JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10)
+    #define JSON_HEDLEY_WARN_UNUSED_RESULT __attribute__((__warn_unused_result__))
+    #define JSON_HEDLEY_WARN_UNUSED_RESULT_MSG(msg) __attribute__((__warn_unused_result__))
+#elif (JSON_HEDLEY_HAS_CPP_ATTRIBUTE(nodiscard) >= 201907L)
+    #define JSON_HEDLEY_WARN_UNUSED_RESULT JSON_HEDLEY_DIAGNOSTIC_DISABLE_CPP98_COMPAT_WRAP_([[nodiscard]])
+    #define JSON_HEDLEY_WARN_UNUSED_RESULT_MSG(msg) JSON_HEDLEY_DIAGNOSTIC_DISABLE_CPP98_COMPAT_WRAP_([[nodiscard(msg)]])
+#elif JSON_HEDLEY_HAS_CPP_ATTRIBUTE(nodiscard)
+    #define JSON_HEDLEY_WARN_UNUSED_RESULT JSON_HEDLEY_DIAGNOSTIC_DISABLE_CPP98_COMPAT_WRAP_([[nodiscard]])
+    #define JSON_HEDLEY_WARN_UNUSED_RESULT_MSG(msg) JSON_HEDLEY_DIAGNOSTIC_DISABLE_CPP98_COMPAT_WRAP_([[nodiscard]])
+#elif defined(_Check_return_) /* SAL */
+    #define JSON_HEDLEY_WARN_UNUSED_RESULT _Check_return_
+    #define JSON_HEDLEY_WARN_UNUSED_RESULT_MSG(msg) _Check_return_
+#else
+    #define JSON_HEDLEY_WARN_UNUSED_RESULT
+    #define JSON_HEDLEY_WARN_UNUSED_RESULT_MSG(msg)
+#endif
+
+#if defined(JSON_HEDLEY_SENTINEL)
+    #undef JSON_HEDLEY_SENTINEL
+#endif
+#if \
+    JSON_HEDLEY_HAS_ATTRIBUTE(sentinel) || \
+    JSON_HEDLEY_GCC_VERSION_CHECK(4,0,0) || \
+    JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0) || \
+    JSON_HEDLEY_ARM_VERSION_CHECK(5,4,0) || \
+    JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10)
+    #define JSON_HEDLEY_SENTINEL(position) __attribute__((__sentinel__(position)))
+#else
+    #define JSON_HEDLEY_SENTINEL(position)
+#endif
+
+#if defined(JSON_HEDLEY_NO_RETURN)
+    #undef JSON_HEDLEY_NO_RETURN
+#endif
+#if JSON_HEDLEY_IAR_VERSION_CHECK(8,0,0)
+    #define JSON_HEDLEY_NO_RETURN __noreturn
+#elif \
+    JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0) || \
+    JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10)
+    #define JSON_HEDLEY_NO_RETURN __attribute__((__noreturn__))
+#elif defined(__STDC_VERSION__) && __STDC_VERSION__ >= 201112L
+    #define JSON_HEDLEY_NO_RETURN _Noreturn
+#elif defined(__cplusplus) && (__cplusplus >= 201103L)
+    #define JSON_HEDLEY_NO_RETURN JSON_HEDLEY_DIAGNOSTIC_DISABLE_CPP98_COMPAT_WRAP_([[noreturn]])
+#elif \
+    JSON_HEDLEY_HAS_ATTRIBUTE(noreturn) || \
+    JSON_HEDLEY_GCC_VERSION_CHECK(3,2,0) || \
+    JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,11,0) || \
+    JSON_HEDLEY_ARM_VERSION_CHECK(4,1,0) || \
+    JSON_HEDLEY_IBM_VERSION_CHECK(10,1,0) || \
+    JSON_HEDLEY_TI_VERSION_CHECK(15,12,0) || \
+    (JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(4,8,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(5,2,0) || \
+    (JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,0,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,4,0) || \
+    (JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,0,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,3,0) || \
+    (JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,2,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,5,0) || \
+    JSON_HEDLEY_TI_CL7X_VERSION_CHECK(1,2,0) || \
+    JSON_HEDLEY_TI_CLPRU_VERSION_CHECK(2,1,0) || \
+    JSON_HEDLEY_IAR_VERSION_CHECK(8,10,0)
+    #define JSON_HEDLEY_NO_RETURN __attribute__((__noreturn__))
+#elif JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,10,0)
+    #define JSON_HEDLEY_NO_RETURN _Pragma("does_not_return")
+#elif \
+    JSON_HEDLEY_MSVC_VERSION_CHECK(13,10,0) || \
+    JSON_HEDLEY_INTEL_CL_VERSION_CHECK(2021,1,0)
+    #define JSON_HEDLEY_NO_RETURN __declspec(noreturn)
+#elif JSON_HEDLEY_TI_CL6X_VERSION_CHECK(6,0,0) && defined(__cplusplus)
+    #define JSON_HEDLEY_NO_RETURN _Pragma("FUNC_NEVER_RETURNS;")
+#elif JSON_HEDLEY_COMPCERT_VERSION_CHECK(3,2,0)
+    #define JSON_HEDLEY_NO_RETURN __attribute((noreturn))
+#elif JSON_HEDLEY_PELLES_VERSION_CHECK(9,0,0)
+    #define JSON_HEDLEY_NO_RETURN __declspec(noreturn)
+#else
+    #define JSON_HEDLEY_NO_RETURN
+#endif
+
+#if defined(JSON_HEDLEY_NO_ESCAPE)
+    #undef JSON_HEDLEY_NO_ESCAPE
+#endif
+#if JSON_HEDLEY_HAS_ATTRIBUTE(noescape)
+    #define JSON_HEDLEY_NO_ESCAPE __attribute__((__noescape__))
+#else
+    #define JSON_HEDLEY_NO_ESCAPE
+#endif
+
+#if defined(JSON_HEDLEY_UNREACHABLE)
+    #undef JSON_HEDLEY_UNREACHABLE
+#endif
+#if defined(JSON_HEDLEY_UNREACHABLE_RETURN)
+    #undef JSON_HEDLEY_UNREACHABLE_RETURN
+#endif
+#if defined(JSON_HEDLEY_ASSUME)
+    #undef JSON_HEDLEY_ASSUME
+#endif
+#if \
+    JSON_HEDLEY_MSVC_VERSION_CHECK(13,10,0) || \
+    JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0) || \
+    JSON_HEDLEY_INTEL_CL_VERSION_CHECK(2021,1,0)
+    #define JSON_HEDLEY_ASSUME(expr) __assume(expr)
+#elif JSON_HEDLEY_HAS_BUILTIN(__builtin_assume)
+    #define JSON_HEDLEY_ASSUME(expr) __builtin_assume(expr)
+#elif \
+    JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,2,0) || \
+    JSON_HEDLEY_TI_CL6X_VERSION_CHECK(4,0,0)
+    #if defined(__cplusplus)
+        #define JSON_HEDLEY_ASSUME(expr) std::_nassert(expr)
+    #else
+        #define JSON_HEDLEY_ASSUME(expr) _nassert(expr)
+    #endif
+#endif
+#if \
+    (JSON_HEDLEY_HAS_BUILTIN(__builtin_unreachable) && (!defined(JSON_HEDLEY_ARM_VERSION))) || \
+    JSON_HEDLEY_GCC_VERSION_CHECK(4,5,0) || \
+    JSON_HEDLEY_PGI_VERSION_CHECK(18,10,0) || \
+    JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0) || \
+    JSON_HEDLEY_IBM_VERSION_CHECK(13,1,5) || \
+    JSON_HEDLEY_CRAY_VERSION_CHECK(10,0,0) || \
+    JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10)
+    #define JSON_HEDLEY_UNREACHABLE() __builtin_unreachable()
+#elif defined(JSON_HEDLEY_ASSUME)
+    #define JSON_HEDLEY_UNREACHABLE() JSON_HEDLEY_ASSUME(0)
+#endif
+#if !defined(JSON_HEDLEY_ASSUME)
+    #if defined(JSON_HEDLEY_UNREACHABLE)
+        #define JSON_HEDLEY_ASSUME(expr) JSON_HEDLEY_STATIC_CAST(void, ((expr) ? 1 : (JSON_HEDLEY_UNREACHABLE(), 1)))
+    #else
+        #define JSON_HEDLEY_ASSUME(expr) JSON_HEDLEY_STATIC_CAST(void, expr)
+    #endif
+#endif
+#if defined(JSON_HEDLEY_UNREACHABLE)
+    #if  \
+        JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,2,0) || \
+        JSON_HEDLEY_TI_CL6X_VERSION_CHECK(4,0,0)
+        #define JSON_HEDLEY_UNREACHABLE_RETURN(value) return (JSON_HEDLEY_STATIC_CAST(void, JSON_HEDLEY_ASSUME(0)), (value))
+    #else
+        #define JSON_HEDLEY_UNREACHABLE_RETURN(value) JSON_HEDLEY_UNREACHABLE()
+    #endif
+#else
+    #define JSON_HEDLEY_UNREACHABLE_RETURN(value) return (value)
+#endif
+#if !defined(JSON_HEDLEY_UNREACHABLE)
+    #define JSON_HEDLEY_UNREACHABLE() JSON_HEDLEY_ASSUME(0)
+#endif
+
+JSON_HEDLEY_DIAGNOSTIC_PUSH
+#if JSON_HEDLEY_HAS_WARNING("-Wpedantic")
+    #pragma clang diagnostic ignored "-Wpedantic"
+#endif
+#if JSON_HEDLEY_HAS_WARNING("-Wc++98-compat-pedantic") && defined(__cplusplus)
+    #pragma clang diagnostic ignored "-Wc++98-compat-pedantic"
+#endif
+#if JSON_HEDLEY_GCC_HAS_WARNING("-Wvariadic-macros",4,0,0)
+    #if defined(__clang__)
+        #pragma clang diagnostic ignored "-Wvariadic-macros"
+    #elif defined(JSON_HEDLEY_GCC_VERSION)
+        #pragma GCC diagnostic ignored "-Wvariadic-macros"
+    #endif
+#endif
+#if defined(JSON_HEDLEY_NON_NULL)
+    #undef JSON_HEDLEY_NON_NULL
+#endif
+#if \
+    JSON_HEDLEY_HAS_ATTRIBUTE(nonnull) || \
+    JSON_HEDLEY_GCC_VERSION_CHECK(3,3,0) || \
+    JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0) || \
+    JSON_HEDLEY_ARM_VERSION_CHECK(4,1,0)
+    #define JSON_HEDLEY_NON_NULL(...) __attribute__((__nonnull__(__VA_ARGS__)))
+#else
+    #define JSON_HEDLEY_NON_NULL(...)
+#endif
+JSON_HEDLEY_DIAGNOSTIC_POP
+
+#if defined(JSON_HEDLEY_PRINTF_FORMAT)
+    #undef JSON_HEDLEY_PRINTF_FORMAT
+#endif
+#if defined(__MINGW32__) && JSON_HEDLEY_GCC_HAS_ATTRIBUTE(format,4,4,0) && !defined(__USE_MINGW_ANSI_STDIO)
+    #define JSON_HEDLEY_PRINTF_FORMAT(string_idx,first_to_check) __attribute__((__format__(ms_printf, string_idx, first_to_check)))
+#elif defined(__MINGW32__) && JSON_HEDLEY_GCC_HAS_ATTRIBUTE(format,4,4,0) && defined(__USE_MINGW_ANSI_STDIO)
+    #define JSON_HEDLEY_PRINTF_FORMAT(string_idx,first_to_check) __attribute__((__format__(gnu_printf, string_idx, first_to_check)))
+#elif \
+    JSON_HEDLEY_HAS_ATTRIBUTE(format) || \
+    JSON_HEDLEY_GCC_VERSION_CHECK(3,1,0) || \
+    JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0) || \
+    JSON_HEDLEY_ARM_VERSION_CHECK(5,6,0) || \
+    JSON_HEDLEY_IBM_VERSION_CHECK(10,1,0) || \
+    JSON_HEDLEY_TI_VERSION_CHECK(15,12,0) || \
+    (JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(4,8,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(5,2,0) || \
+    (JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,0,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,4,0) || \
+    (JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,0,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,3,0) || \
+    (JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,2,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,5,0) || \
+    JSON_HEDLEY_TI_CL7X_VERSION_CHECK(1,2,0) || \
+    JSON_HEDLEY_TI_CLPRU_VERSION_CHECK(2,1,0) || \
+    JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10)
+    #define JSON_HEDLEY_PRINTF_FORMAT(string_idx,first_to_check) __attribute__((__format__(__printf__, string_idx, first_to_check)))
+#elif JSON_HEDLEY_PELLES_VERSION_CHECK(6,0,0)
+    #define JSON_HEDLEY_PRINTF_FORMAT(string_idx,first_to_check) __declspec(vaformat(printf,string_idx,first_to_check))
+#else
+    #define JSON_HEDLEY_PRINTF_FORMAT(string_idx,first_to_check)
+#endif
+
+#if defined(JSON_HEDLEY_CONSTEXPR)
+    #undef JSON_HEDLEY_CONSTEXPR
+#endif
+#if defined(__cplusplus)
+    #if __cplusplus >= 201103L
+        #define JSON_HEDLEY_CONSTEXPR JSON_HEDLEY_DIAGNOSTIC_DISABLE_CPP98_COMPAT_WRAP_(constexpr)
+    #endif
+#endif
+#if !defined(JSON_HEDLEY_CONSTEXPR)
+    #define JSON_HEDLEY_CONSTEXPR
+#endif
+
+#if defined(JSON_HEDLEY_PREDICT)
+    #undef JSON_HEDLEY_PREDICT
+#endif
+#if defined(JSON_HEDLEY_LIKELY)
+    #undef JSON_HEDLEY_LIKELY
+#endif
+#if defined(JSON_HEDLEY_UNLIKELY)
+    #undef JSON_HEDLEY_UNLIKELY
+#endif
+#if defined(JSON_HEDLEY_UNPREDICTABLE)
+    #undef JSON_HEDLEY_UNPREDICTABLE
+#endif
+#if JSON_HEDLEY_HAS_BUILTIN(__builtin_unpredictable)
+    #define JSON_HEDLEY_UNPREDICTABLE(expr) __builtin_unpredictable((expr))
+#endif
+#if \
+  (JSON_HEDLEY_HAS_BUILTIN(__builtin_expect_with_probability) && !defined(JSON_HEDLEY_PGI_VERSION)) || \
+  JSON_HEDLEY_GCC_VERSION_CHECK(9,0,0) || \
+  JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10)
+#  define JSON_HEDLEY_PREDICT(expr, value, probability) __builtin_expect_with_probability(  (expr), (value), (probability))
+#  define JSON_HEDLEY_PREDICT_TRUE(expr, probability)   __builtin_expect_with_probability(!!(expr),    1   , (probability))
+#  define JSON_HEDLEY_PREDICT_FALSE(expr, probability)  __builtin_expect_with_probability(!!(expr),    0   , (probability))
+#  define JSON_HEDLEY_LIKELY(expr)                      __builtin_expect                 (!!(expr),    1                  )
+#  define JSON_HEDLEY_UNLIKELY(expr)                    __builtin_expect                 (!!(expr),    0                  )
+#elif \
+  (JSON_HEDLEY_HAS_BUILTIN(__builtin_expect) && !defined(JSON_HEDLEY_INTEL_CL_VERSION)) || \
+  JSON_HEDLEY_GCC_VERSION_CHECK(3,0,0) || \
+  JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0) || \
+  (JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,15,0) && defined(__cplusplus)) || \
+  JSON_HEDLEY_ARM_VERSION_CHECK(4,1,0) || \
+  JSON_HEDLEY_IBM_VERSION_CHECK(10,1,0) || \
+  JSON_HEDLEY_TI_VERSION_CHECK(15,12,0) || \
+  JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(4,7,0) || \
+  JSON_HEDLEY_TI_CL430_VERSION_CHECK(3,1,0) || \
+  JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,1,0) || \
+  JSON_HEDLEY_TI_CL6X_VERSION_CHECK(6,1,0) || \
+  JSON_HEDLEY_TI_CL7X_VERSION_CHECK(1,2,0) || \
+  JSON_HEDLEY_TI_CLPRU_VERSION_CHECK(2,1,0) || \
+  JSON_HEDLEY_TINYC_VERSION_CHECK(0,9,27) || \
+  JSON_HEDLEY_CRAY_VERSION_CHECK(8,1,0) || \
+  JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10)
+#  define JSON_HEDLEY_PREDICT(expr, expected, probability) \
+    (((probability) >= 0.9) ? __builtin_expect((expr), (expected)) : (JSON_HEDLEY_STATIC_CAST(void, expected), (expr)))
+#  define JSON_HEDLEY_PREDICT_TRUE(expr, probability) \
+    (__extension__ ({ \
+        double hedley_probability_ = (probability); \
+        ((hedley_probability_ >= 0.9) ? __builtin_expect(!!(expr), 1) : ((hedley_probability_ <= 0.1) ? __builtin_expect(!!(expr), 0) : !!(expr))); \
+    }))
+#  define JSON_HEDLEY_PREDICT_FALSE(expr, probability) \
+    (__extension__ ({ \
+        double hedley_probability_ = (probability); \
+        ((hedley_probability_ >= 0.9) ? __builtin_expect(!!(expr), 0) : ((hedley_probability_ <= 0.1) ? __builtin_expect(!!(expr), 1) : !!(expr))); \
+    }))
+#  define JSON_HEDLEY_LIKELY(expr)   __builtin_expect(!!(expr), 1)
+#  define JSON_HEDLEY_UNLIKELY(expr) __builtin_expect(!!(expr), 0)
+#else
+#  define JSON_HEDLEY_PREDICT(expr, expected, probability) (JSON_HEDLEY_STATIC_CAST(void, expected), (expr))
+#  define JSON_HEDLEY_PREDICT_TRUE(expr, probability) (!!(expr))
+#  define JSON_HEDLEY_PREDICT_FALSE(expr, probability) (!!(expr))
+#  define JSON_HEDLEY_LIKELY(expr) (!!(expr))
+#  define JSON_HEDLEY_UNLIKELY(expr) (!!(expr))
+#endif
+#if !defined(JSON_HEDLEY_UNPREDICTABLE)
+    #define JSON_HEDLEY_UNPREDICTABLE(expr) JSON_HEDLEY_PREDICT(expr, 1, 0.5)
+#endif
+
+#if defined(JSON_HEDLEY_MALLOC)
+    #undef JSON_HEDLEY_MALLOC
+#endif
+#if \
+    JSON_HEDLEY_HAS_ATTRIBUTE(malloc) || \
+    JSON_HEDLEY_GCC_VERSION_CHECK(3,1,0) || \
+    JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0) || \
+    JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,11,0) || \
+    JSON_HEDLEY_ARM_VERSION_CHECK(4,1,0) || \
+    JSON_HEDLEY_IBM_VERSION_CHECK(12,1,0) || \
+    JSON_HEDLEY_TI_VERSION_CHECK(15,12,0) || \
+    (JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(4,8,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(5,2,0) || \
+    (JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,0,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,4,0) || \
+    (JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,0,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,3,0) || \
+    (JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,2,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,5,0) || \
+    JSON_HEDLEY_TI_CL7X_VERSION_CHECK(1,2,0) || \
+    JSON_HEDLEY_TI_CLPRU_VERSION_CHECK(2,1,0) || \
+    JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10)
+    #define JSON_HEDLEY_MALLOC __attribute__((__malloc__))
+#elif JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,10,0)
+    #define JSON_HEDLEY_MALLOC _Pragma("returns_new_memory")
+#elif \
+    JSON_HEDLEY_MSVC_VERSION_CHECK(14,0,0) || \
+    JSON_HEDLEY_INTEL_CL_VERSION_CHECK(2021,1,0)
+    #define JSON_HEDLEY_MALLOC __declspec(restrict)
+#else
+    #define JSON_HEDLEY_MALLOC
+#endif
+
+#if defined(JSON_HEDLEY_PURE)
+    #undef JSON_HEDLEY_PURE
+#endif
+#if \
+  JSON_HEDLEY_HAS_ATTRIBUTE(pure) || \
+  JSON_HEDLEY_GCC_VERSION_CHECK(2,96,0) || \
+  JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0) || \
+  JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,11,0) || \
+  JSON_HEDLEY_ARM_VERSION_CHECK(4,1,0) || \
+  JSON_HEDLEY_IBM_VERSION_CHECK(10,1,0) || \
+  JSON_HEDLEY_TI_VERSION_CHECK(15,12,0) || \
+  (JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(4,8,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+  JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(5,2,0) || \
+  (JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,0,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+  JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,4,0) || \
+  (JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,0,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+  JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,3,0) || \
+  (JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,2,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+  JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,5,0) || \
+  JSON_HEDLEY_TI_CL7X_VERSION_CHECK(1,2,0) || \
+  JSON_HEDLEY_TI_CLPRU_VERSION_CHECK(2,1,0) || \
+  JSON_HEDLEY_PGI_VERSION_CHECK(17,10,0) || \
+  JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10)
+#  define JSON_HEDLEY_PURE __attribute__((__pure__))
+#elif JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,10,0)
+#  define JSON_HEDLEY_PURE _Pragma("does_not_write_global_data")
+#elif defined(__cplusplus) && \
+    ( \
+      JSON_HEDLEY_TI_CL430_VERSION_CHECK(2,0,1) || \
+      JSON_HEDLEY_TI_CL6X_VERSION_CHECK(4,0,0) || \
+      JSON_HEDLEY_TI_CL7X_VERSION_CHECK(1,2,0) \
+    )
+#  define JSON_HEDLEY_PURE _Pragma("FUNC_IS_PURE;")
+#else
+#  define JSON_HEDLEY_PURE
+#endif
+
+#if defined(JSON_HEDLEY_CONST)
+    #undef JSON_HEDLEY_CONST
+#endif
+#if \
+    JSON_HEDLEY_HAS_ATTRIBUTE(const) || \
+    JSON_HEDLEY_GCC_VERSION_CHECK(2,5,0) || \
+    JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0) || \
+    JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,11,0) || \
+    JSON_HEDLEY_ARM_VERSION_CHECK(4,1,0) || \
+    JSON_HEDLEY_IBM_VERSION_CHECK(10,1,0) || \
+    JSON_HEDLEY_TI_VERSION_CHECK(15,12,0) || \
+    (JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(4,8,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(5,2,0) || \
+    (JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,0,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,4,0) || \
+    (JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,0,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,3,0) || \
+    (JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,2,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,5,0) || \
+    JSON_HEDLEY_TI_CL7X_VERSION_CHECK(1,2,0) || \
+    JSON_HEDLEY_TI_CLPRU_VERSION_CHECK(2,1,0) || \
+    JSON_HEDLEY_PGI_VERSION_CHECK(17,10,0) || \
+    JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10)
+    #define JSON_HEDLEY_CONST __attribute__((__const__))
+#elif \
+    JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,10,0)
+    #define JSON_HEDLEY_CONST _Pragma("no_side_effect")
+#else
+    #define JSON_HEDLEY_CONST JSON_HEDLEY_PURE
+#endif
+
+#if defined(JSON_HEDLEY_RESTRICT)
+    #undef JSON_HEDLEY_RESTRICT
+#endif
+#if defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L) && !defined(__cplusplus)
+    #define JSON_HEDLEY_RESTRICT restrict
+#elif \
+    JSON_HEDLEY_GCC_VERSION_CHECK(3,1,0) || \
+    JSON_HEDLEY_MSVC_VERSION_CHECK(14,0,0) || \
+    JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0) || \
+    JSON_HEDLEY_INTEL_CL_VERSION_CHECK(2021,1,0) || \
+    JSON_HEDLEY_ARM_VERSION_CHECK(4,1,0) || \
+    JSON_HEDLEY_IBM_VERSION_CHECK(10,1,0) || \
+    JSON_HEDLEY_PGI_VERSION_CHECK(17,10,0) || \
+    JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,3,0) || \
+    JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,2,4) || \
+    JSON_HEDLEY_TI_CL6X_VERSION_CHECK(8,1,0) || \
+    JSON_HEDLEY_TI_CL7X_VERSION_CHECK(1,2,0) || \
+    (JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,14,0) && defined(__cplusplus)) || \
+    JSON_HEDLEY_IAR_VERSION_CHECK(8,0,0) || \
+    defined(__clang__) || \
+    JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10)
+    #define JSON_HEDLEY_RESTRICT __restrict
+#elif JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,3,0) && !defined(__cplusplus)
+    #define JSON_HEDLEY_RESTRICT _Restrict
+#else
+    #define JSON_HEDLEY_RESTRICT
+#endif
+
+#if defined(JSON_HEDLEY_INLINE)
+    #undef JSON_HEDLEY_INLINE
+#endif
+#if \
+    (defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L)) || \
+    (defined(__cplusplus) && (__cplusplus >= 199711L))
+    #define JSON_HEDLEY_INLINE inline
+#elif \
+    defined(JSON_HEDLEY_GCC_VERSION) || \
+    JSON_HEDLEY_ARM_VERSION_CHECK(6,2,0)
+    #define JSON_HEDLEY_INLINE __inline__
+#elif \
+    JSON_HEDLEY_MSVC_VERSION_CHECK(12,0,0) || \
+    JSON_HEDLEY_INTEL_CL_VERSION_CHECK(2021,1,0) || \
+    JSON_HEDLEY_ARM_VERSION_CHECK(4,1,0) || \
+    JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(5,1,0) || \
+    JSON_HEDLEY_TI_CL430_VERSION_CHECK(3,1,0) || \
+    JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,2,0) || \
+    JSON_HEDLEY_TI_CL6X_VERSION_CHECK(8,0,0) || \
+    JSON_HEDLEY_TI_CL7X_VERSION_CHECK(1,2,0) || \
+    JSON_HEDLEY_TI_CLPRU_VERSION_CHECK(2,1,0) || \
+    JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10)
+    #define JSON_HEDLEY_INLINE __inline
+#else
+    #define JSON_HEDLEY_INLINE
+#endif
+
+#if defined(JSON_HEDLEY_ALWAYS_INLINE)
+    #undef JSON_HEDLEY_ALWAYS_INLINE
+#endif
+#if \
+  JSON_HEDLEY_HAS_ATTRIBUTE(always_inline) || \
+  JSON_HEDLEY_GCC_VERSION_CHECK(4,0,0) || \
+  JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0) || \
+  JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,11,0) || \
+  JSON_HEDLEY_ARM_VERSION_CHECK(4,1,0) || \
+  JSON_HEDLEY_IBM_VERSION_CHECK(10,1,0) || \
+  JSON_HEDLEY_TI_VERSION_CHECK(15,12,0) || \
+  (JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(4,8,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+  JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(5,2,0) || \
+  (JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,0,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+  JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,4,0) || \
+  (JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,0,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+  JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,3,0) || \
+  (JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,2,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+  JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,5,0) || \
+  JSON_HEDLEY_TI_CL7X_VERSION_CHECK(1,2,0) || \
+  JSON_HEDLEY_TI_CLPRU_VERSION_CHECK(2,1,0) || \
+  JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10) || \
+  JSON_HEDLEY_IAR_VERSION_CHECK(8,10,0)
+#  define JSON_HEDLEY_ALWAYS_INLINE __attribute__((__always_inline__)) JSON_HEDLEY_INLINE
+#elif \
+  JSON_HEDLEY_MSVC_VERSION_CHECK(12,0,0) || \
+  JSON_HEDLEY_INTEL_CL_VERSION_CHECK(2021,1,0)
+#  define JSON_HEDLEY_ALWAYS_INLINE __forceinline
+#elif defined(__cplusplus) && \
+    ( \
+      JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(5,2,0) || \
+      JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,3,0) || \
+      JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,4,0) || \
+      JSON_HEDLEY_TI_CL6X_VERSION_CHECK(6,1,0) || \
+      JSON_HEDLEY_TI_CL7X_VERSION_CHECK(1,2,0) || \
+      JSON_HEDLEY_TI_CLPRU_VERSION_CHECK(2,1,0) \
+    )
+#  define JSON_HEDLEY_ALWAYS_INLINE _Pragma("FUNC_ALWAYS_INLINE;")
+#elif JSON_HEDLEY_IAR_VERSION_CHECK(8,0,0)
+#  define JSON_HEDLEY_ALWAYS_INLINE _Pragma("inline=forced")
+#else
+#  define JSON_HEDLEY_ALWAYS_INLINE JSON_HEDLEY_INLINE
+#endif
+
+#if defined(JSON_HEDLEY_NEVER_INLINE)
+    #undef JSON_HEDLEY_NEVER_INLINE
+#endif
+#if \
+    JSON_HEDLEY_HAS_ATTRIBUTE(noinline) || \
+    JSON_HEDLEY_GCC_VERSION_CHECK(4,0,0) || \
+    JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0) || \
+    JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,11,0) || \
+    JSON_HEDLEY_ARM_VERSION_CHECK(4,1,0) || \
+    JSON_HEDLEY_IBM_VERSION_CHECK(10,1,0) || \
+    JSON_HEDLEY_TI_VERSION_CHECK(15,12,0) || \
+    (JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(4,8,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(5,2,0) || \
+    (JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,0,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,4,0) || \
+    (JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,0,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,3,0) || \
+    (JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,2,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+    JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,5,0) || \
+    JSON_HEDLEY_TI_CL7X_VERSION_CHECK(1,2,0) || \
+    JSON_HEDLEY_TI_CLPRU_VERSION_CHECK(2,1,0) || \
+    JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10) || \
+    JSON_HEDLEY_IAR_VERSION_CHECK(8,10,0)
+    #define JSON_HEDLEY_NEVER_INLINE __attribute__((__noinline__))
+#elif \
+    JSON_HEDLEY_MSVC_VERSION_CHECK(13,10,0) || \
+    JSON_HEDLEY_INTEL_CL_VERSION_CHECK(2021,1,0)
+    #define JSON_HEDLEY_NEVER_INLINE __declspec(noinline)
+#elif JSON_HEDLEY_PGI_VERSION_CHECK(10,2,0)
+    #define JSON_HEDLEY_NEVER_INLINE _Pragma("noinline")
+#elif JSON_HEDLEY_TI_CL6X_VERSION_CHECK(6,0,0) && defined(__cplusplus)
+    #define JSON_HEDLEY_NEVER_INLINE _Pragma("FUNC_CANNOT_INLINE;")
+#elif JSON_HEDLEY_IAR_VERSION_CHECK(8,0,0)
+    #define JSON_HEDLEY_NEVER_INLINE _Pragma("inline=never")
+#elif JSON_HEDLEY_COMPCERT_VERSION_CHECK(3,2,0)
+    #define JSON_HEDLEY_NEVER_INLINE __attribute((noinline))
+#elif JSON_HEDLEY_PELLES_VERSION_CHECK(9,0,0)
+    #define JSON_HEDLEY_NEVER_INLINE __declspec(noinline)
+#else
+    #define JSON_HEDLEY_NEVER_INLINE
+#endif
+
+#if defined(JSON_HEDLEY_PRIVATE)
+    #undef JSON_HEDLEY_PRIVATE
+#endif
+#if defined(JSON_HEDLEY_PUBLIC)
+    #undef JSON_HEDLEY_PUBLIC
+#endif
+#if defined(JSON_HEDLEY_IMPORT)
+    #undef JSON_HEDLEY_IMPORT
+#endif
+#if defined(_WIN32) || defined(__CYGWIN__)
+#  define JSON_HEDLEY_PRIVATE
+#  define JSON_HEDLEY_PUBLIC   __declspec(dllexport)
+#  define JSON_HEDLEY_IMPORT   __declspec(dllimport)
+#else
+#  if \
+    JSON_HEDLEY_HAS_ATTRIBUTE(visibility) || \
+    JSON_HEDLEY_GCC_VERSION_CHECK(3,3,0) || \
+    JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,11,0) || \
+    JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0) || \
+    JSON_HEDLEY_ARM_VERSION_CHECK(4,1,0) || \
+    JSON_HEDLEY_IBM_VERSION_CHECK(13,1,0) || \
+    ( \
+      defined(__TI_EABI__) && \
+      ( \
+        (JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,2,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
+        JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,5,0) \
+      ) \
+    ) || \
+    JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10)
+#    define JSON_HEDLEY_PRIVATE __attribute__((__visibility__("hidden")))
+#    define JSON_HEDLEY_PUBLIC  __attribute__((__visibility__("default")))
+#  else
+#    define JSON_HEDLEY_PRIVATE
+#    define JSON_HEDLEY_PUBLIC
+#  endif
+#  define JSON_HEDLEY_IMPORT    extern
+#endif
+
+#if defined(JSON_HEDLEY_NO_THROW)
+    #undef JSON_HEDLEY_NO_THROW
+#endif
+#if \
+    JSON_HEDLEY_HAS_ATTRIBUTE(nothrow) || \
+    JSON_HEDLEY_GCC_VERSION_CHECK(3,3,0) || \
+    JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0) || \
+    JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10)
+    #define JSON_HEDLEY_NO_THROW __attribute__((__nothrow__))
+#elif \
+    JSON_HEDLEY_MSVC_VERSION_CHECK(13,1,0) || \
+    JSON_HEDLEY_INTEL_CL_VERSION_CHECK(2021,1,0) || \
+    JSON_HEDLEY_ARM_VERSION_CHECK(4,1,0)
+    #define JSON_HEDLEY_NO_THROW __declspec(nothrow)
+#else
+    #define JSON_HEDLEY_NO_THROW
+#endif
+
+#if defined(JSON_HEDLEY_FALL_THROUGH)
+    #undef JSON_HEDLEY_FALL_THROUGH
+#endif
+#if \
+    JSON_HEDLEY_HAS_ATTRIBUTE(fallthrough) || \
+    JSON_HEDLEY_GCC_VERSION_CHECK(7,0,0) || \
+    JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10)
+    #define JSON_HEDLEY_FALL_THROUGH __attribute__((__fallthrough__))
+#elif JSON_HEDLEY_HAS_CPP_ATTRIBUTE_NS(clang,fallthrough)
+    #define JSON_HEDLEY_FALL_THROUGH JSON_HEDLEY_DIAGNOSTIC_DISABLE_CPP98_COMPAT_WRAP_([[clang::fallthrough]])
+#elif JSON_HEDLEY_HAS_CPP_ATTRIBUTE(fallthrough)
+    #define JSON_HEDLEY_FALL_THROUGH JSON_HEDLEY_DIAGNOSTIC_DISABLE_CPP98_COMPAT_WRAP_([[fallthrough]])
+#elif defined(__fallthrough) /* SAL */
+    #define JSON_HEDLEY_FALL_THROUGH __fallthrough
+#else
+    #define JSON_HEDLEY_FALL_THROUGH
+#endif
+
+#if defined(JSON_HEDLEY_RETURNS_NON_NULL)
+    #undef JSON_HEDLEY_RETURNS_NON_NULL
+#endif
+#if \
+    JSON_HEDLEY_HAS_ATTRIBUTE(returns_nonnull) || \
+    JSON_HEDLEY_GCC_VERSION_CHECK(4,9,0) || \
+    JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10)
+    #define JSON_HEDLEY_RETURNS_NON_NULL __attribute__((__returns_nonnull__))
+#elif defined(_Ret_notnull_) /* SAL */
+    #define JSON_HEDLEY_RETURNS_NON_NULL _Ret_notnull_
+#else
+    #define JSON_HEDLEY_RETURNS_NON_NULL
+#endif
+
+#if defined(JSON_HEDLEY_ARRAY_PARAM)
+    #undef JSON_HEDLEY_ARRAY_PARAM
+#endif
+#if \
+    defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L) && \
+    !defined(__STDC_NO_VLA__) && \
+    !defined(__cplusplus) && \
+    !defined(JSON_HEDLEY_PGI_VERSION) && \
+    !defined(JSON_HEDLEY_TINYC_VERSION)
+    #define JSON_HEDLEY_ARRAY_PARAM(name) (name)
+#else
+    #define JSON_HEDLEY_ARRAY_PARAM(name)
+#endif
+
+#if defined(JSON_HEDLEY_IS_CONSTANT)
+    #undef JSON_HEDLEY_IS_CONSTANT
+#endif
+#if defined(JSON_HEDLEY_REQUIRE_CONSTEXPR)
+    #undef JSON_HEDLEY_REQUIRE_CONSTEXPR
+#endif
+/* JSON_HEDLEY_IS_CONSTEXPR_ is for
+   HEDLEY INTERNAL USE ONLY.  API subject to change without notice. */
+#if defined(JSON_HEDLEY_IS_CONSTEXPR_)
+    #undef JSON_HEDLEY_IS_CONSTEXPR_
+#endif
+#if \
+    JSON_HEDLEY_HAS_BUILTIN(__builtin_constant_p) || \
+    JSON_HEDLEY_GCC_VERSION_CHECK(3,4,0) || \
+    JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0) || \
+    JSON_HEDLEY_TINYC_VERSION_CHECK(0,9,19) || \
+    JSON_HEDLEY_ARM_VERSION_CHECK(4,1,0) || \
+    JSON_HEDLEY_IBM_VERSION_CHECK(13,1,0) || \
+    JSON_HEDLEY_TI_CL6X_VERSION_CHECK(6,1,0) || \
+    (JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,10,0) && !defined(__cplusplus)) || \
+    JSON_HEDLEY_CRAY_VERSION_CHECK(8,1,0) || \
+    JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10)
+    #define JSON_HEDLEY_IS_CONSTANT(expr) __builtin_constant_p(expr)
+#endif
+#if !defined(__cplusplus)
+#  if \
+       JSON_HEDLEY_HAS_BUILTIN(__builtin_types_compatible_p) || \
+       JSON_HEDLEY_GCC_VERSION_CHECK(3,4,0) || \
+       JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0) || \
+       JSON_HEDLEY_IBM_VERSION_CHECK(13,1,0) || \
+       JSON_HEDLEY_CRAY_VERSION_CHECK(8,1,0) || \
+       JSON_HEDLEY_ARM_VERSION_CHECK(5,4,0) || \
+       JSON_HEDLEY_TINYC_VERSION_CHECK(0,9,24)
+#if defined(__INTPTR_TYPE__)
+    #define JSON_HEDLEY_IS_CONSTEXPR_(expr) __builtin_types_compatible_p(__typeof__((1 ? (void*) ((__INTPTR_TYPE__) ((expr) * 0)) : (int*) 0)), int*)
+#else
+    #include <stdint.h>
+    #define JSON_HEDLEY_IS_CONSTEXPR_(expr) __builtin_types_compatible_p(__typeof__((1 ? (void*) ((intptr_t) ((expr) * 0)) : (int*) 0)), int*)
+#endif
+#  elif \
+       ( \
+          defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 201112L) && \
+          !defined(JSON_HEDLEY_SUNPRO_VERSION) && \
+          !defined(JSON_HEDLEY_PGI_VERSION) && \
+          !defined(JSON_HEDLEY_IAR_VERSION)) || \
+       (JSON_HEDLEY_HAS_EXTENSION(c_generic_selections) && !defined(JSON_HEDLEY_IAR_VERSION)) || \
+       JSON_HEDLEY_GCC_VERSION_CHECK(4,9,0) || \
+       JSON_HEDLEY_INTEL_VERSION_CHECK(17,0,0) || \
+       JSON_HEDLEY_IBM_VERSION_CHECK(12,1,0) || \
+       JSON_HEDLEY_ARM_VERSION_CHECK(5,3,0)
+#if defined(__INTPTR_TYPE__)
+    #define JSON_HEDLEY_IS_CONSTEXPR_(expr) _Generic((1 ? (void*) ((__INTPTR_TYPE__) ((expr) * 0)) : (int*) 0), int*: 1, void*: 0)
+#else
+    #include <stdint.h>
+    #define JSON_HEDLEY_IS_CONSTEXPR_(expr) _Generic((1 ? (void*) ((intptr_t) * 0) : (int*) 0), int*: 1, void*: 0)
+#endif
+#  elif \
+       defined(JSON_HEDLEY_GCC_VERSION) || \
+       defined(JSON_HEDLEY_INTEL_VERSION) || \
+       defined(JSON_HEDLEY_TINYC_VERSION) || \
+       defined(JSON_HEDLEY_TI_ARMCL_VERSION) || \
+       JSON_HEDLEY_TI_CL430_VERSION_CHECK(18,12,0) || \
+       defined(JSON_HEDLEY_TI_CL2000_VERSION) || \
+       defined(JSON_HEDLEY_TI_CL6X_VERSION) || \
+       defined(JSON_HEDLEY_TI_CL7X_VERSION) || \
+       defined(JSON_HEDLEY_TI_CLPRU_VERSION) || \
+       defined(__clang__)
+#    define JSON_HEDLEY_IS_CONSTEXPR_(expr) ( \
+        sizeof(void) != \
+        sizeof(*( \
+                  1 ? \
+                  ((void*) ((expr) * 0L) ) : \
+((struct { char v[sizeof(void) * 2]; } *) 1) \
+                ) \
+              ) \
+                                            )
+#  endif
+#endif
+#if defined(JSON_HEDLEY_IS_CONSTEXPR_)
+    #if !defined(JSON_HEDLEY_IS_CONSTANT)
+        #define JSON_HEDLEY_IS_CONSTANT(expr) JSON_HEDLEY_IS_CONSTEXPR_(expr)
+    #endif
+    #define JSON_HEDLEY_REQUIRE_CONSTEXPR(expr) (JSON_HEDLEY_IS_CONSTEXPR_(expr) ? (expr) : (-1))
+#else
+    #if !defined(JSON_HEDLEY_IS_CONSTANT)
+        #define JSON_HEDLEY_IS_CONSTANT(expr) (0)
+    #endif
+    #define JSON_HEDLEY_REQUIRE_CONSTEXPR(expr) (expr)
+#endif
+
+#if defined(JSON_HEDLEY_BEGIN_C_DECLS)
+    #undef JSON_HEDLEY_BEGIN_C_DECLS
+#endif
+#if defined(JSON_HEDLEY_END_C_DECLS)
+    #undef JSON_HEDLEY_END_C_DECLS
+#endif
+#if defined(JSON_HEDLEY_C_DECL)
+    #undef JSON_HEDLEY_C_DECL
+#endif
+#if defined(__cplusplus)
+    #define JSON_HEDLEY_BEGIN_C_DECLS extern "C" {
+    #define JSON_HEDLEY_END_C_DECLS }
+    #define JSON_HEDLEY_C_DECL extern "C"
+#else
+    #define JSON_HEDLEY_BEGIN_C_DECLS
+    #define JSON_HEDLEY_END_C_DECLS
+    #define JSON_HEDLEY_C_DECL
+#endif
+
+#if defined(JSON_HEDLEY_STATIC_ASSERT)
+    #undef JSON_HEDLEY_STATIC_ASSERT
+#endif
+#if \
+  !defined(__cplusplus) && ( \
+      (defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 201112L)) || \
+      (JSON_HEDLEY_HAS_FEATURE(c_static_assert) && !defined(JSON_HEDLEY_INTEL_CL_VERSION)) || \
+      JSON_HEDLEY_GCC_VERSION_CHECK(6,0,0) || \
+      JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0) || \
+      defined(_Static_assert) \
+    )
+#  define JSON_HEDLEY_STATIC_ASSERT(expr, message) _Static_assert(expr, message)
+#elif \
+  (defined(__cplusplus) && (__cplusplus >= 201103L)) || \
+  JSON_HEDLEY_MSVC_VERSION_CHECK(16,0,0) || \
+  JSON_HEDLEY_INTEL_CL_VERSION_CHECK(2021,1,0)
+#  define JSON_HEDLEY_STATIC_ASSERT(expr, message) JSON_HEDLEY_DIAGNOSTIC_DISABLE_CPP98_COMPAT_WRAP_(static_assert(expr, message))
+#else
+#  define JSON_HEDLEY_STATIC_ASSERT(expr, message)
+#endif
+
+#if defined(JSON_HEDLEY_NULL)
+    #undef JSON_HEDLEY_NULL
+#endif
+#if defined(__cplusplus)
+    #if __cplusplus >= 201103L
+        #define JSON_HEDLEY_NULL JSON_HEDLEY_DIAGNOSTIC_DISABLE_CPP98_COMPAT_WRAP_(nullptr)
+    #elif defined(NULL)
+        #define JSON_HEDLEY_NULL NULL
+    #else
+        #define JSON_HEDLEY_NULL JSON_HEDLEY_STATIC_CAST(void*, 0)
+    #endif
+#elif defined(NULL)
+    #define JSON_HEDLEY_NULL NULL
+#else
+    #define JSON_HEDLEY_NULL ((void*) 0)
+#endif
+
+#if defined(JSON_HEDLEY_MESSAGE)
+    #undef JSON_HEDLEY_MESSAGE
+#endif
+#if JSON_HEDLEY_HAS_WARNING("-Wunknown-pragmas")
+#  define JSON_HEDLEY_MESSAGE(msg) \
+    JSON_HEDLEY_DIAGNOSTIC_PUSH \
+    JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_PRAGMAS \
+    JSON_HEDLEY_PRAGMA(message msg) \
+    JSON_HEDLEY_DIAGNOSTIC_POP
+#elif \
+  JSON_HEDLEY_GCC_VERSION_CHECK(4,4,0) || \
+  JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0)
+#  define JSON_HEDLEY_MESSAGE(msg) JSON_HEDLEY_PRAGMA(message msg)
+#elif JSON_HEDLEY_CRAY_VERSION_CHECK(5,0,0)
+#  define JSON_HEDLEY_MESSAGE(msg) JSON_HEDLEY_PRAGMA(_CRI message msg)
+#elif JSON_HEDLEY_IAR_VERSION_CHECK(8,0,0)
+#  define JSON_HEDLEY_MESSAGE(msg) JSON_HEDLEY_PRAGMA(message(msg))
+#elif JSON_HEDLEY_PELLES_VERSION_CHECK(2,0,0)
+#  define JSON_HEDLEY_MESSAGE(msg) JSON_HEDLEY_PRAGMA(message(msg))
+#else
+#  define JSON_HEDLEY_MESSAGE(msg)
+#endif
+
+#if defined(JSON_HEDLEY_WARNING)
+    #undef JSON_HEDLEY_WARNING
+#endif
+#if JSON_HEDLEY_HAS_WARNING("-Wunknown-pragmas")
+#  define JSON_HEDLEY_WARNING(msg) \
+    JSON_HEDLEY_DIAGNOSTIC_PUSH \
+    JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_PRAGMAS \
+    JSON_HEDLEY_PRAGMA(clang warning msg) \
+    JSON_HEDLEY_DIAGNOSTIC_POP
+#elif \
+  JSON_HEDLEY_GCC_VERSION_CHECK(4,8,0) || \
+  JSON_HEDLEY_PGI_VERSION_CHECK(18,4,0) || \
+  JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0)
+#  define JSON_HEDLEY_WARNING(msg) JSON_HEDLEY_PRAGMA(GCC warning msg)
+#elif \
+  JSON_HEDLEY_MSVC_VERSION_CHECK(15,0,0) || \
+  JSON_HEDLEY_INTEL_CL_VERSION_CHECK(2021,1,0)
+#  define JSON_HEDLEY_WARNING(msg) JSON_HEDLEY_PRAGMA(message(msg))
+#else
+#  define JSON_HEDLEY_WARNING(msg) JSON_HEDLEY_MESSAGE(msg)
+#endif
+
+#if defined(JSON_HEDLEY_REQUIRE)
+    #undef JSON_HEDLEY_REQUIRE
+#endif
+#if defined(JSON_HEDLEY_REQUIRE_MSG)
+    #undef JSON_HEDLEY_REQUIRE_MSG
+#endif
+#if JSON_HEDLEY_HAS_ATTRIBUTE(diagnose_if)
+#  if JSON_HEDLEY_HAS_WARNING("-Wgcc-compat")
+#    define JSON_HEDLEY_REQUIRE(expr) \
+    JSON_HEDLEY_DIAGNOSTIC_PUSH \
+    _Pragma("clang diagnostic ignored \"-Wgcc-compat\"") \
+    __attribute__((diagnose_if(!(expr), #expr, "error"))) \
+    JSON_HEDLEY_DIAGNOSTIC_POP
+#    define JSON_HEDLEY_REQUIRE_MSG(expr,msg) \
+    JSON_HEDLEY_DIAGNOSTIC_PUSH \
+    _Pragma("clang diagnostic ignored \"-Wgcc-compat\"") \
+    __attribute__((diagnose_if(!(expr), msg, "error"))) \
+    JSON_HEDLEY_DIAGNOSTIC_POP
+#  else
+#    define JSON_HEDLEY_REQUIRE(expr) __attribute__((diagnose_if(!(expr), #expr, "error")))
+#    define JSON_HEDLEY_REQUIRE_MSG(expr,msg) __attribute__((diagnose_if(!(expr), msg, "error")))
+#  endif
+#else
+#  define JSON_HEDLEY_REQUIRE(expr)
+#  define JSON_HEDLEY_REQUIRE_MSG(expr,msg)
+#endif
+
+#if defined(JSON_HEDLEY_FLAGS)
+    #undef JSON_HEDLEY_FLAGS
+#endif
+#if JSON_HEDLEY_HAS_ATTRIBUTE(flag_enum) && (!defined(__cplusplus) || JSON_HEDLEY_HAS_WARNING("-Wbitfield-enum-conversion"))
+    #define JSON_HEDLEY_FLAGS __attribute__((__flag_enum__))
+#else
+    #define JSON_HEDLEY_FLAGS
+#endif
+
+#if defined(JSON_HEDLEY_FLAGS_CAST)
+    #undef JSON_HEDLEY_FLAGS_CAST
+#endif
+#if JSON_HEDLEY_INTEL_VERSION_CHECK(19,0,0)
+#  define JSON_HEDLEY_FLAGS_CAST(T, expr) (__extension__ ({ \
+        JSON_HEDLEY_DIAGNOSTIC_PUSH \
+        _Pragma("warning(disable:188)") \
+        ((T) (expr)); \
+        JSON_HEDLEY_DIAGNOSTIC_POP \
+    }))
+#else
+#  define JSON_HEDLEY_FLAGS_CAST(T, expr) JSON_HEDLEY_STATIC_CAST(T, expr)
+#endif
+
+#if defined(JSON_HEDLEY_EMPTY_BASES)
+    #undef JSON_HEDLEY_EMPTY_BASES
+#endif
+#if \
+    (JSON_HEDLEY_MSVC_VERSION_CHECK(19,0,23918) && !JSON_HEDLEY_MSVC_VERSION_CHECK(20,0,0)) || \
+    JSON_HEDLEY_INTEL_CL_VERSION_CHECK(2021,1,0)
+    #define JSON_HEDLEY_EMPTY_BASES __declspec(empty_bases)
+#else
+    #define JSON_HEDLEY_EMPTY_BASES
+#endif
+
+/* Remaining macros are deprecated. */
+
+#if defined(JSON_HEDLEY_GCC_NOT_CLANG_VERSION_CHECK)
+    #undef JSON_HEDLEY_GCC_NOT_CLANG_VERSION_CHECK
+#endif
+#if defined(__clang__)
+    #define JSON_HEDLEY_GCC_NOT_CLANG_VERSION_CHECK(major,minor,patch) (0)
+#else
+    #define JSON_HEDLEY_GCC_NOT_CLANG_VERSION_CHECK(major,minor,patch) JSON_HEDLEY_GCC_VERSION_CHECK(major,minor,patch)
+#endif
+
+#if defined(JSON_HEDLEY_CLANG_HAS_ATTRIBUTE)
+    #undef JSON_HEDLEY_CLANG_HAS_ATTRIBUTE
+#endif
+#define JSON_HEDLEY_CLANG_HAS_ATTRIBUTE(attribute) JSON_HEDLEY_HAS_ATTRIBUTE(attribute)
+
+#if defined(JSON_HEDLEY_CLANG_HAS_CPP_ATTRIBUTE)
+    #undef JSON_HEDLEY_CLANG_HAS_CPP_ATTRIBUTE
+#endif
+#define JSON_HEDLEY_CLANG_HAS_CPP_ATTRIBUTE(attribute) JSON_HEDLEY_HAS_CPP_ATTRIBUTE(attribute)
+
+#if defined(JSON_HEDLEY_CLANG_HAS_BUILTIN)
+    #undef JSON_HEDLEY_CLANG_HAS_BUILTIN
+#endif
+#define JSON_HEDLEY_CLANG_HAS_BUILTIN(builtin) JSON_HEDLEY_HAS_BUILTIN(builtin)
+
+#if defined(JSON_HEDLEY_CLANG_HAS_FEATURE)
+    #undef JSON_HEDLEY_CLANG_HAS_FEATURE
+#endif
+#define JSON_HEDLEY_CLANG_HAS_FEATURE(feature) JSON_HEDLEY_HAS_FEATURE(feature)
+
+#if defined(JSON_HEDLEY_CLANG_HAS_EXTENSION)
+    #undef JSON_HEDLEY_CLANG_HAS_EXTENSION
+#endif
+#define JSON_HEDLEY_CLANG_HAS_EXTENSION(extension) JSON_HEDLEY_HAS_EXTENSION(extension)
+
+#if defined(JSON_HEDLEY_CLANG_HAS_DECLSPEC_DECLSPEC_ATTRIBUTE)
+    #undef JSON_HEDLEY_CLANG_HAS_DECLSPEC_DECLSPEC_ATTRIBUTE
+#endif
+#define JSON_HEDLEY_CLANG_HAS_DECLSPEC_ATTRIBUTE(attribute) JSON_HEDLEY_HAS_DECLSPEC_ATTRIBUTE(attribute)
+
+#if defined(JSON_HEDLEY_CLANG_HAS_WARNING)
+    #undef JSON_HEDLEY_CLANG_HAS_WARNING
+#endif
+#define JSON_HEDLEY_CLANG_HAS_WARNING(warning) JSON_HEDLEY_HAS_WARNING(warning)
+
+#endif /* !defined(JSON_HEDLEY_VERSION) || (JSON_HEDLEY_VERSION < X) */
+
+
+// This file contains all internal macro definitions (except those affecting ABI)
+// You MUST include macro_unscope.hpp at the end of json.hpp to undef all of them
+
+// #include <nlohmann/detail/abi_macros.hpp>
+
+
+// exclude unsupported compilers
+#if !defined(JSON_SKIP_UNSUPPORTED_COMPILER_CHECK)
+    #if defined(__clang__)
+        #if (__clang_major__ * 10000 + __clang_minor__ * 100 + __clang_patchlevel__) < 30400
+            #error "unsupported Clang version - see https://github.com/nlohmann/json#supported-compilers"
+        #endif
+    #elif defined(__GNUC__) && !(defined(__ICC) || defined(__INTEL_COMPILER))
+        #if (__GNUC__ * 10000 + __GNUC_MINOR__ * 100 + __GNUC_PATCHLEVEL__) < 40800
+            #error "unsupported GCC version - see https://github.com/nlohmann/json#supported-compilers"
+        #endif
+    #endif
+#endif
+
+// C++ language standard detection
+// if the user manually specified the used c++ version this is skipped
+#if !defined(JSON_HAS_CPP_20) && !defined(JSON_HAS_CPP_17) && !defined(JSON_HAS_CPP_14) && !defined(JSON_HAS_CPP_11)
+    #if (defined(__cplusplus) && __cplusplus >= 202002L) || (defined(_MSVC_LANG) && _MSVC_LANG >= 202002L)
+        #define JSON_HAS_CPP_20
+        #define JSON_HAS_CPP_17
+        #define JSON_HAS_CPP_14
+    #elif (defined(__cplusplus) && __cplusplus >= 201703L) || (defined(_HAS_CXX17) && _HAS_CXX17 == 1) // fix for issue #464
+        #define JSON_HAS_CPP_17
+        #define JSON_HAS_CPP_14
+    #elif (defined(__cplusplus) && __cplusplus >= 201402L) || (defined(_HAS_CXX14) && _HAS_CXX14 == 1)
+        #define JSON_HAS_CPP_14
+    #endif
+    // the cpp 11 flag is always specified because it is the minimal required version
+    #define JSON_HAS_CPP_11
+#endif
+
+#ifdef __has_include
+    #if __has_include(<version>)
+        #include <version>
+    #endif
+#endif
+
+#if !defined(JSON_HAS_FILESYSTEM) && !defined(JSON_HAS_EXPERIMENTAL_FILESYSTEM)
+    #ifdef JSON_HAS_CPP_17
+        #if defined(__cpp_lib_filesystem)
+            #define JSON_HAS_FILESYSTEM 1
+        #elif defined(__cpp_lib_experimental_filesystem)
+            #define JSON_HAS_EXPERIMENTAL_FILESYSTEM 1
+        #elif !defined(__has_include)
+            #define JSON_HAS_EXPERIMENTAL_FILESYSTEM 1
+        #elif __has_include(<filesystem>)
+            #define JSON_HAS_FILESYSTEM 1
+        #elif __has_include(<experimental/filesystem>)
+            #define JSON_HAS_EXPERIMENTAL_FILESYSTEM 1
+        #endif
+
+        // std::filesystem does not work on MinGW GCC 8: https://sourceforge.net/p/mingw-w64/bugs/737/
+        #if defined(__MINGW32__) && defined(__GNUC__) && __GNUC__ == 8
+            #undef JSON_HAS_FILESYSTEM
+            #undef JSON_HAS_EXPERIMENTAL_FILESYSTEM
+        #endif
+
+        // no filesystem support before GCC 8: https://en.cppreference.com/w/cpp/compiler_support
+        #if defined(__GNUC__) && !defined(__clang__) && __GNUC__ < 8
+            #undef JSON_HAS_FILESYSTEM
+            #undef JSON_HAS_EXPERIMENTAL_FILESYSTEM
+        #endif
+
+        // no filesystem support before Clang 7: https://en.cppreference.com/w/cpp/compiler_support
+        #if defined(__clang_major__) && __clang_major__ < 7
+            #undef JSON_HAS_FILESYSTEM
+            #undef JSON_HAS_EXPERIMENTAL_FILESYSTEM
+        #endif
+
+        // no filesystem support before MSVC 19.14: https://en.cppreference.com/w/cpp/compiler_support
+        #if defined(_MSC_VER) && _MSC_VER < 1914
+            #undef JSON_HAS_FILESYSTEM
+            #undef JSON_HAS_EXPERIMENTAL_FILESYSTEM
+        #endif
+
+        // no filesystem support before iOS 13
+        #if defined(__IPHONE_OS_VERSION_MIN_REQUIRED) && __IPHONE_OS_VERSION_MIN_REQUIRED < 130000
+            #undef JSON_HAS_FILESYSTEM
+            #undef JSON_HAS_EXPERIMENTAL_FILESYSTEM
+        #endif
+
+        // no filesystem support before macOS Catalina
+        #if defined(__MAC_OS_X_VERSION_MIN_REQUIRED) && __MAC_OS_X_VERSION_MIN_REQUIRED < 101500
+            #undef JSON_HAS_FILESYSTEM
+            #undef JSON_HAS_EXPERIMENTAL_FILESYSTEM
+        #endif
+    #endif
+#endif
+
+#ifndef JSON_HAS_EXPERIMENTAL_FILESYSTEM
+    #define JSON_HAS_EXPERIMENTAL_FILESYSTEM 0
+#endif
+
+#ifndef JSON_HAS_FILESYSTEM
+    #define JSON_HAS_FILESYSTEM 0
+#endif
+
+#ifndef JSON_HAS_THREE_WAY_COMPARISON
+    #if defined(__cpp_impl_three_way_comparison) && __cpp_impl_three_way_comparison >= 201907L \
+        && defined(__cpp_lib_three_way_comparison) && __cpp_lib_three_way_comparison >= 201907L
+        #define JSON_HAS_THREE_WAY_COMPARISON 1
+    #else
+        #define JSON_HAS_THREE_WAY_COMPARISON 0
+    #endif
+#endif
+
+#ifndef JSON_HAS_RANGES
+    // ranges header shipping in GCC 11.1.0 (released 2021-04-27) has syntax error
+    #if defined(__GLIBCXX__) && __GLIBCXX__ == 20210427
+        #define JSON_HAS_RANGES 0
+    #elif defined(__cpp_lib_ranges)
+        #define JSON_HAS_RANGES 1
+    #else
+        #define JSON_HAS_RANGES 0
+    #endif
+#endif
+
+#ifdef JSON_HAS_CPP_17
+    #define JSON_INLINE_VARIABLE inline
+#else
+    #define JSON_INLINE_VARIABLE
+#endif
+
+#if JSON_HEDLEY_HAS_ATTRIBUTE(no_unique_address)
+    #define JSON_NO_UNIQUE_ADDRESS [[no_unique_address]]
+#else
+    #define JSON_NO_UNIQUE_ADDRESS
+#endif
+
+// disable documentation warnings on clang
+#if defined(__clang__)
+    #pragma clang diagnostic push
+    #pragma clang diagnostic ignored "-Wdocumentation"
+    #pragma clang diagnostic ignored "-Wdocumentation-unknown-command"
+#endif
+
+// allow disabling exceptions
+#if (defined(__cpp_exceptions) || defined(__EXCEPTIONS) || defined(_CPPUNWIND)) && !defined(JSON_NOEXCEPTION)
+    #define JSON_THROW(exception) throw exception
+    #define JSON_TRY try
+    #define JSON_CATCH(exception) catch(exception)
+    #define JSON_INTERNAL_CATCH(exception) catch(exception)
+#else
+    #include <cstdlib>
+    #define JSON_THROW(exception) std::abort()
+    #define JSON_TRY if(true)
+    #define JSON_CATCH(exception) if(false)
+    #define JSON_INTERNAL_CATCH(exception) if(false)
+#endif
+
+// override exception macros
+#if defined(JSON_THROW_USER)
+    #undef JSON_THROW
+    #define JSON_THROW JSON_THROW_USER
+#endif
+#if defined(JSON_TRY_USER)
+    #undef JSON_TRY
+    #define JSON_TRY JSON_TRY_USER
+#endif
+#if defined(JSON_CATCH_USER)
+    #undef JSON_CATCH
+    #define JSON_CATCH JSON_CATCH_USER
+    #undef JSON_INTERNAL_CATCH
+    #define JSON_INTERNAL_CATCH JSON_CATCH_USER
+#endif
+#if defined(JSON_INTERNAL_CATCH_USER)
+    #undef JSON_INTERNAL_CATCH
+    #define JSON_INTERNAL_CATCH JSON_INTERNAL_CATCH_USER
+#endif
+
+// allow overriding assert
+#if !defined(JSON_ASSERT)
+    #include <cassert> // assert
+    #define JSON_ASSERT(x) assert(x)
+#endif
+
+// allow to access some private functions (needed by the test suite)
+#if defined(JSON_TESTS_PRIVATE)
+    #define JSON_PRIVATE_UNLESS_TESTED public
+#else
+    #define JSON_PRIVATE_UNLESS_TESTED private
+#endif
+
+/*!
+@brief macro to briefly define a mapping between an enum and JSON
+@def NLOHMANN_JSON_SERIALIZE_ENUM
+@since version 3.4.0
+*/
+#define NLOHMANN_JSON_SERIALIZE_ENUM(ENUM_TYPE, ...)                                            \
+    template<typename BasicJsonType>                                                            \
+    inline void to_json(BasicJsonType& j, const ENUM_TYPE& e)                                   \
+    {                                                                                           \
+        static_assert(std::is_enum<ENUM_TYPE>::value, #ENUM_TYPE " must be an enum!");          \
+        static const std::pair<ENUM_TYPE, BasicJsonType> m[] = __VA_ARGS__;                     \
+        auto it = std::find_if(std::begin(m), std::end(m),                                      \
+                               [e](const std::pair<ENUM_TYPE, BasicJsonType>& ej_pair) -> bool  \
+        {                                                                                       \
+            return ej_pair.first == e;                                                          \
+        });                                                                                     \
+        j = ((it != std::end(m)) ? it : std::begin(m))->second;                                 \
+    }                                                                                           \
+    template<typename BasicJsonType>                                                            \
+    inline void from_json(const BasicJsonType& j, ENUM_TYPE& e)                                 \
+    {                                                                                           \
+        static_assert(std::is_enum<ENUM_TYPE>::value, #ENUM_TYPE " must be an enum!");          \
+        static const std::pair<ENUM_TYPE, BasicJsonType> m[] = __VA_ARGS__;                     \
+        auto it = std::find_if(std::begin(m), std::end(m),                                      \
+                               [&j](const std::pair<ENUM_TYPE, BasicJsonType>& ej_pair) -> bool \
+        {                                                                                       \
+            return ej_pair.second == j;                                                         \
+        });                                                                                     \
+        e = ((it != std::end(m)) ? it : std::begin(m))->first;                                  \
+    }
+
+// Ugly macros to avoid uglier copy-paste when specializing basic_json. They
+// may be removed in the future once the class is split.
+
+#define NLOHMANN_BASIC_JSON_TPL_DECLARATION                                \
+    template<template<typename, typename, typename...> class ObjectType,   \
+             template<typename, typename...> class ArrayType,              \
+             class StringType, class BooleanType, class NumberIntegerType, \
+             class NumberUnsignedType, class NumberFloatType,              \
+             template<typename> class AllocatorType,                       \
+             template<typename, typename = void> class JSONSerializer,     \
+             class BinaryType,                                             \
+             class CustomBaseClass>
+
+#define NLOHMANN_BASIC_JSON_TPL                                            \
+    basic_json<ObjectType, ArrayType, StringType, BooleanType,             \
+    NumberIntegerType, NumberUnsignedType, NumberFloatType,                \
+    AllocatorType, JSONSerializer, BinaryType, CustomBaseClass>
+
+// Macros to simplify conversion from/to types
+
+#define NLOHMANN_JSON_EXPAND( x ) x
+#define NLOHMANN_JSON_GET_MACRO(_1, _2, _3, _4, _5, _6, _7, _8, _9, _10, _11, _12, _13, _14, _15, _16, _17, _18, _19, _20, _21, _22, _23, _24, _25, _26, _27, _28, _29, _30, _31, _32, _33, _34, _35, _36, _37, _38, _39, _40, _41, _42, _43, _44, _45, _46, _47, _48, _49, _50, _51, _52, _53, _54, _55, _56, _57, _58, _59, _60, _61, _62, _63, _64, NAME,...) NAME
+#define NLOHMANN_JSON_PASTE(...) NLOHMANN_JSON_EXPAND(NLOHMANN_JSON_GET_MACRO(__VA_ARGS__, \
+        NLOHMANN_JSON_PASTE64, \
+        NLOHMANN_JSON_PASTE63, \
+        NLOHMANN_JSON_PASTE62, \
+        NLOHMANN_JSON_PASTE61, \
+        NLOHMANN_JSON_PASTE60, \
+        NLOHMANN_JSON_PASTE59, \
+        NLOHMANN_JSON_PASTE58, \
+        NLOHMANN_JSON_PASTE57, \
+        NLOHMANN_JSON_PASTE56, \
+        NLOHMANN_JSON_PASTE55, \
+        NLOHMANN_JSON_PASTE54, \
+        NLOHMANN_JSON_PASTE53, \
+        NLOHMANN_JSON_PASTE52, \
+        NLOHMANN_JSON_PASTE51, \
+        NLOHMANN_JSON_PASTE50, \
+        NLOHMANN_JSON_PASTE49, \
+        NLOHMANN_JSON_PASTE48, \
+        NLOHMANN_JSON_PASTE47, \
+        NLOHMANN_JSON_PASTE46, \
+        NLOHMANN_JSON_PASTE45, \
+        NLOHMANN_JSON_PASTE44, \
+        NLOHMANN_JSON_PASTE43, \
+        NLOHMANN_JSON_PASTE42, \
+        NLOHMANN_JSON_PASTE41, \
+        NLOHMANN_JSON_PASTE40, \
+        NLOHMANN_JSON_PASTE39, \
+        NLOHMANN_JSON_PASTE38, \
+        NLOHMANN_JSON_PASTE37, \
+        NLOHMANN_JSON_PASTE36, \
+        NLOHMANN_JSON_PASTE35, \
+        NLOHMANN_JSON_PASTE34, \
+        NLOHMANN_JSON_PASTE33, \
+        NLOHMANN_JSON_PASTE32, \
+        NLOHMANN_JSON_PASTE31, \
+        NLOHMANN_JSON_PASTE30, \
+        NLOHMANN_JSON_PASTE29, \
+        NLOHMANN_JSON_PASTE28, \
+        NLOHMANN_JSON_PASTE27, \
+        NLOHMANN_JSON_PASTE26, \
+        NLOHMANN_JSON_PASTE25, \
+        NLOHMANN_JSON_PASTE24, \
+        NLOHMANN_JSON_PASTE23, \
+        NLOHMANN_JSON_PASTE22, \
+        NLOHMANN_JSON_PASTE21, \
+        NLOHMANN_JSON_PASTE20, \
+        NLOHMANN_JSON_PASTE19, \
+        NLOHMANN_JSON_PASTE18, \
+        NLOHMANN_JSON_PASTE17, \
+        NLOHMANN_JSON_PASTE16, \
+        NLOHMANN_JSON_PASTE15, \
+        NLOHMANN_JSON_PASTE14, \
+        NLOHMANN_JSON_PASTE13, \
+        NLOHMANN_JSON_PASTE12, \
+        NLOHMANN_JSON_PASTE11, \
+        NLOHMANN_JSON_PASTE10, \
+        NLOHMANN_JSON_PASTE9, \
+        NLOHMANN_JSON_PASTE8, \
+        NLOHMANN_JSON_PASTE7, \
+        NLOHMANN_JSON_PASTE6, \
+        NLOHMANN_JSON_PASTE5, \
+        NLOHMANN_JSON_PASTE4, \
+        NLOHMANN_JSON_PASTE3, \
+        NLOHMANN_JSON_PASTE2, \
+        NLOHMANN_JSON_PASTE1)(__VA_ARGS__))
+#define NLOHMANN_JSON_PASTE2(func, v1) func(v1)
+#define NLOHMANN_JSON_PASTE3(func, v1, v2) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE2(func, v2)
+#define NLOHMANN_JSON_PASTE4(func, v1, v2, v3) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE3(func, v2, v3)
+#define NLOHMANN_JSON_PASTE5(func, v1, v2, v3, v4) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE4(func, v2, v3, v4)
+#define NLOHMANN_JSON_PASTE6(func, v1, v2, v3, v4, v5) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE5(func, v2, v3, v4, v5)
+#define NLOHMANN_JSON_PASTE7(func, v1, v2, v3, v4, v5, v6) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE6(func, v2, v3, v4, v5, v6)
+#define NLOHMANN_JSON_PASTE8(func, v1, v2, v3, v4, v5, v6, v7) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE7(func, v2, v3, v4, v5, v6, v7)
+#define NLOHMANN_JSON_PASTE9(func, v1, v2, v3, v4, v5, v6, v7, v8) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE8(func, v2, v3, v4, v5, v6, v7, v8)
+#define NLOHMANN_JSON_PASTE10(func, v1, v2, v3, v4, v5, v6, v7, v8, v9) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE9(func, v2, v3, v4, v5, v6, v7, v8, v9)
+#define NLOHMANN_JSON_PASTE11(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE10(func, v2, v3, v4, v5, v6, v7, v8, v9, v10)
+#define NLOHMANN_JSON_PASTE12(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE11(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11)
+#define NLOHMANN_JSON_PASTE13(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE12(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12)
+#define NLOHMANN_JSON_PASTE14(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE13(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13)
+#define NLOHMANN_JSON_PASTE15(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE14(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14)
+#define NLOHMANN_JSON_PASTE16(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE15(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15)
+#define NLOHMANN_JSON_PASTE17(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE16(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16)
+#define NLOHMANN_JSON_PASTE18(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE17(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17)
+#define NLOHMANN_JSON_PASTE19(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE18(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18)
+#define NLOHMANN_JSON_PASTE20(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE19(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19)
+#define NLOHMANN_JSON_PASTE21(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE20(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20)
+#define NLOHMANN_JSON_PASTE22(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE21(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21)
+#define NLOHMANN_JSON_PASTE23(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE22(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22)
+#define NLOHMANN_JSON_PASTE24(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE23(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23)
+#define NLOHMANN_JSON_PASTE25(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE24(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24)
+#define NLOHMANN_JSON_PASTE26(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE25(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25)
+#define NLOHMANN_JSON_PASTE27(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE26(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26)
+#define NLOHMANN_JSON_PASTE28(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE27(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27)
+#define NLOHMANN_JSON_PASTE29(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE28(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28)
+#define NLOHMANN_JSON_PASTE30(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE29(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29)
+#define NLOHMANN_JSON_PASTE31(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE30(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30)
+#define NLOHMANN_JSON_PASTE32(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE31(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31)
+#define NLOHMANN_JSON_PASTE33(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE32(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32)
+#define NLOHMANN_JSON_PASTE34(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE33(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33)
+#define NLOHMANN_JSON_PASTE35(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE34(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34)
+#define NLOHMANN_JSON_PASTE36(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE35(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35)
+#define NLOHMANN_JSON_PASTE37(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE36(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36)
+#define NLOHMANN_JSON_PASTE38(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE37(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37)
+#define NLOHMANN_JSON_PASTE39(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE38(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38)
+#define NLOHMANN_JSON_PASTE40(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE39(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39)
+#define NLOHMANN_JSON_PASTE41(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE40(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40)
+#define NLOHMANN_JSON_PASTE42(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE41(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41)
+#define NLOHMANN_JSON_PASTE43(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE42(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42)
+#define NLOHMANN_JSON_PASTE44(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE43(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43)
+#define NLOHMANN_JSON_PASTE45(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE44(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44)
+#define NLOHMANN_JSON_PASTE46(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE45(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45)
+#define NLOHMANN_JSON_PASTE47(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE46(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46)
+#define NLOHMANN_JSON_PASTE48(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE47(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47)
+#define NLOHMANN_JSON_PASTE49(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE48(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48)
+#define NLOHMANN_JSON_PASTE50(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE49(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49)
+#define NLOHMANN_JSON_PASTE51(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE50(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50)
+#define NLOHMANN_JSON_PASTE52(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE51(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51)
+#define NLOHMANN_JSON_PASTE53(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE52(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52)
+#define NLOHMANN_JSON_PASTE54(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE53(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53)
+#define NLOHMANN_JSON_PASTE55(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53, v54) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE54(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53, v54)
+#define NLOHMANN_JSON_PASTE56(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53, v54, v55) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE55(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53, v54, v55)
+#define NLOHMANN_JSON_PASTE57(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53, v54, v55, v56) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE56(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53, v54, v55, v56)
+#define NLOHMANN_JSON_PASTE58(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53, v54, v55, v56, v57) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE57(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53, v54, v55, v56, v57)
+#define NLOHMANN_JSON_PASTE59(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53, v54, v55, v56, v57, v58) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE58(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53, v54, v55, v56, v57, v58)
+#define NLOHMANN_JSON_PASTE60(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53, v54, v55, v56, v57, v58, v59) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE59(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53, v54, v55, v56, v57, v58, v59)
+#define NLOHMANN_JSON_PASTE61(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53, v54, v55, v56, v57, v58, v59, v60) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE60(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53, v54, v55, v56, v57, v58, v59, v60)
+#define NLOHMANN_JSON_PASTE62(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53, v54, v55, v56, v57, v58, v59, v60, v61) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE61(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53, v54, v55, v56, v57, v58, v59, v60, v61)
+#define NLOHMANN_JSON_PASTE63(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53, v54, v55, v56, v57, v58, v59, v60, v61, v62) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE62(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53, v54, v55, v56, v57, v58, v59, v60, v61, v62)
+#define NLOHMANN_JSON_PASTE64(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53, v54, v55, v56, v57, v58, v59, v60, v61, v62, v63) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE63(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53, v54, v55, v56, v57, v58, v59, v60, v61, v62, v63)
+
+#define NLOHMANN_JSON_TO(v1) nlohmann_json_j[#v1] = nlohmann_json_t.v1;
+#define NLOHMANN_JSON_FROM(v1) nlohmann_json_j.at(#v1).get_to(nlohmann_json_t.v1);
+#define NLOHMANN_JSON_FROM_WITH_DEFAULT(v1) nlohmann_json_t.v1 = nlohmann_json_j.value(#v1, nlohmann_json_default_obj.v1);
+
+/*!
+@brief macro
+@def NLOHMANN_DEFINE_TYPE_INTRUSIVE
+@since version 3.9.0
+*/
+#define NLOHMANN_DEFINE_TYPE_INTRUSIVE(Type, ...)  \
+    friend void to_json(nlohmann::json& nlohmann_json_j, const Type& nlohmann_json_t) { NLOHMANN_JSON_EXPAND(NLOHMANN_JSON_PASTE(NLOHMANN_JSON_TO, __VA_ARGS__)) } \
+    friend void from_json(const nlohmann::json& nlohmann_json_j, Type& nlohmann_json_t) { NLOHMANN_JSON_EXPAND(NLOHMANN_JSON_PASTE(NLOHMANN_JSON_FROM, __VA_ARGS__)) }
+
+#define NLOHMANN_DEFINE_TYPE_INTRUSIVE_WITH_DEFAULT(Type, ...)  \
+    friend void to_json(nlohmann::json& nlohmann_json_j, const Type& nlohmann_json_t) { NLOHMANN_JSON_EXPAND(NLOHMANN_JSON_PASTE(NLOHMANN_JSON_TO, __VA_ARGS__)) } \
+    friend void from_json(const nlohmann::json& nlohmann_json_j, Type& nlohmann_json_t) { const Type nlohmann_json_default_obj{}; NLOHMANN_JSON_EXPAND(NLOHMANN_JSON_PASTE(NLOHMANN_JSON_FROM_WITH_DEFAULT, __VA_ARGS__)) }
+
+/*!
+@brief macro
+@def NLOHMANN_DEFINE_TYPE_NON_INTRUSIVE
+@since version 3.9.0
+*/
+#define NLOHMANN_DEFINE_TYPE_NON_INTRUSIVE(Type, ...)  \
+    inline void to_json(nlohmann::json& nlohmann_json_j, const Type& nlohmann_json_t) { NLOHMANN_JSON_EXPAND(NLOHMANN_JSON_PASTE(NLOHMANN_JSON_TO, __VA_ARGS__)) } \
+    inline void from_json(const nlohmann::json& nlohmann_json_j, Type& nlohmann_json_t) { NLOHMANN_JSON_EXPAND(NLOHMANN_JSON_PASTE(NLOHMANN_JSON_FROM, __VA_ARGS__)) }
+
+#define NLOHMANN_DEFINE_TYPE_NON_INTRUSIVE_WITH_DEFAULT(Type, ...)  \
+    inline void to_json(nlohmann::json& nlohmann_json_j, const Type& nlohmann_json_t) { NLOHMANN_JSON_EXPAND(NLOHMANN_JSON_PASTE(NLOHMANN_JSON_TO, __VA_ARGS__)) } \
+    inline void from_json(const nlohmann::json& nlohmann_json_j, Type& nlohmann_json_t) { const Type nlohmann_json_default_obj{}; NLOHMANN_JSON_EXPAND(NLOHMANN_JSON_PASTE(NLOHMANN_JSON_FROM_WITH_DEFAULT, __VA_ARGS__)) }
+
+
+// inspired from https://stackoverflow.com/a/26745591
+// allows to call any std function as if (e.g. with begin):
+// using std::begin; begin(x);
+//
+// it allows using the detected idiom to retrieve the return type
+// of such an expression
+#define NLOHMANN_CAN_CALL_STD_FUNC_IMPL(std_name)                                 \
+    namespace detail {                                                            \
+    using std::std_name;                                                          \
+    \
+    template<typename... T>                                                       \
+    using result_of_##std_name = decltype(std_name(std::declval<T>()...));        \
+    }                                                                             \
+    \
+    namespace detail2 {                                                           \
+    struct std_name##_tag                                                         \
+    {                                                                             \
+    };                                                                            \
+    \
+    template<typename... T>                                                       \
+    std_name##_tag std_name(T&&...);                                              \
+    \
+    template<typename... T>                                                       \
+    using result_of_##std_name = decltype(std_name(std::declval<T>()...));        \
+    \
+    template<typename... T>                                                       \
+    struct would_call_std_##std_name                                              \
+    {                                                                             \
+        static constexpr auto const value = ::nlohmann::detail::                  \
+                                            is_detected_exact<std_name##_tag, result_of_##std_name, T...>::value; \
+    };                                                                            \
+    } /* namespace detail2 */ \
+    \
+    template<typename... T>                                                       \
+    struct would_call_std_##std_name : detail2::would_call_std_##std_name<T...>   \
+    {                                                                             \
+    }
+
+#ifndef JSON_USE_IMPLICIT_CONVERSIONS
+    #define JSON_USE_IMPLICIT_CONVERSIONS 1
+#endif
+
+#if JSON_USE_IMPLICIT_CONVERSIONS
+    #define JSON_EXPLICIT
+#else
+    #define JSON_EXPLICIT explicit
+#endif
+
+#ifndef JSON_DISABLE_ENUM_SERIALIZATION
+    #define JSON_DISABLE_ENUM_SERIALIZATION 0
+#endif
+
+#ifndef JSON_USE_GLOBAL_UDLS
+    #define JSON_USE_GLOBAL_UDLS 1
+#endif
+
+#if JSON_HAS_THREE_WAY_COMPARISON
+    #include <compare> // partial_ordering
+#endif
+
+NLOHMANN_JSON_NAMESPACE_BEGIN
+namespace detail
+{
+
+///////////////////////////
+// JSON type enumeration //
+///////////////////////////
+
+/*!
+@brief the JSON type enumeration
+
+This enumeration collects the different JSON types. It is internally used to
+distinguish the stored values, and the functions @ref basic_json::is_null(),
+@ref basic_json::is_object(), @ref basic_json::is_array(),
+@ref basic_json::is_string(), @ref basic_json::is_boolean(),
+@ref basic_json::is_number() (with @ref basic_json::is_number_integer(),
+@ref basic_json::is_number_unsigned(), and @ref basic_json::is_number_float()),
+@ref basic_json::is_discarded(), @ref basic_json::is_primitive(), and
+@ref basic_json::is_structured() rely on it.
+
+@note There are three enumeration entries (number_integer, number_unsigned, and
+number_float), because the library distinguishes these three types for numbers:
+@ref basic_json::number_unsigned_t is used for unsigned integers,
+@ref basic_json::number_integer_t is used for signed integers, and
+@ref basic_json::number_float_t is used for floating-point numbers or to
+approximate integers which do not fit in the limits of their respective type.
+
+@sa see @ref basic_json::basic_json(const value_t value_type) -- create a JSON
+value with the default value for a given type
+
+@since version 1.0.0
+*/
+enum class value_t : std::uint8_t
+{
+    null,             ///< null value
+    object,           ///< object (unordered set of name/value pairs)
+    array,            ///< array (ordered collection of values)
+    string,           ///< string value
+    boolean,          ///< boolean value
+    number_integer,   ///< number value (signed integer)
+    number_unsigned,  ///< number value (unsigned integer)
+    number_float,     ///< number value (floating-point)
+    binary,           ///< binary array (ordered collection of bytes)
+    discarded         ///< discarded by the parser callback function
+};
+
+/*!
+@brief comparison operator for JSON types
+
+Returns an ordering that is similar to Python:
+- order: null < boolean < number < object < array < string < binary
+- furthermore, each type is not smaller than itself
+- discarded values are not comparable
+- binary is represented as a b"" string in python and directly comparable to a
+  string; however, making a binary array directly comparable with a string would
+  be surprising behavior in a JSON file.
+
+@since version 1.0.0
+*/
+#if JSON_HAS_THREE_WAY_COMPARISON
+    inline std::partial_ordering operator<=>(const value_t lhs, const value_t rhs) noexcept // *NOPAD*
+#else
+    inline bool operator<(const value_t lhs, const value_t rhs) noexcept
+#endif
+{
+    static constexpr std::array<std::uint8_t, 9> order = {{
+            0 /* null */, 3 /* object */, 4 /* array */, 5 /* string */,
+            1 /* boolean */, 2 /* integer */, 2 /* unsigned */, 2 /* float */,
+            6 /* binary */
+        }
+    };
+
+    const auto l_index = static_cast<std::size_t>(lhs);
+    const auto r_index = static_cast<std::size_t>(rhs);
+#if JSON_HAS_THREE_WAY_COMPARISON
+    if (l_index < order.size() && r_index < order.size())
+    {
+        return order[l_index] <=> order[r_index]; // *NOPAD*
+    }
+    return std::partial_ordering::unordered;
+#else
+    return l_index < order.size() && r_index < order.size() && order[l_index] < order[r_index];
+#endif
+}
+
+// GCC selects the built-in operator< over an operator rewritten from
+// a user-defined spaceship operator
+// Clang, MSVC, and ICC select the rewritten candidate
+// (see GCC bug https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105200)
+#if JSON_HAS_THREE_WAY_COMPARISON && defined(__GNUC__)
+inline bool operator<(const value_t lhs, const value_t rhs) noexcept
+{
+    return std::is_lt(lhs <=> rhs); // *NOPAD*
+}
+#endif
+
+}  // namespace detail
+NLOHMANN_JSON_NAMESPACE_END
+
+// #include <nlohmann/detail/string_escape.hpp>
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.2
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013-2022 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+
+
+// #include <nlohmann/detail/abi_macros.hpp>
+
+
+NLOHMANN_JSON_NAMESPACE_BEGIN
+namespace detail
+{
+
+/*!
+@brief replace all occurrences of a substring by another string
+
+@param[in,out] s  the string to manipulate; changed so that all
+               occurrences of @a f are replaced with @a t
+@param[in]     f  the substring to replace with @a t
+@param[in]     t  the string to replace @a f
+
+@pre The search string @a f must not be empty. **This precondition is
+enforced with an assertion.**
+
+@since version 2.0.0
+*/
+template<typename StringType>
+inline void replace_substring(StringType& s, const StringType& f,
+                              const StringType& t)
+{
+    JSON_ASSERT(!f.empty());
+    for (auto pos = s.find(f);                // find first occurrence of f
+            pos != StringType::npos;          // make sure f was found
+            s.replace(pos, f.size(), t),      // replace with t, and
+            pos = s.find(f, pos + t.size()))  // find next occurrence of f
+    {}
+}
+
+/*!
+ * @brief string escaping as described in RFC 6901 (Sect. 4)
+ * @param[in] s string to escape
+ * @return    escaped string
+ *
+ * Note the order of escaping "~" to "~0" and "/" to "~1" is important.
+ */
+template<typename StringType>
+inline StringType escape(StringType s)
+{
+    replace_substring(s, StringType{"~"}, StringType{"~0"});
+    replace_substring(s, StringType{"/"}, StringType{"~1"});
+    return s;
+}
+
+/*!
+ * @brief string unescaping as described in RFC 6901 (Sect. 4)
+ * @param[in] s string to unescape
+ * @return    unescaped string
+ *
+ * Note the order of escaping "~1" to "/" and "~0" to "~" is important.
+ */
+template<typename StringType>
+static void unescape(StringType& s)
+{
+    replace_substring(s, StringType{"~1"}, StringType{"/"});
+    replace_substring(s, StringType{"~0"}, StringType{"~"});
+}
+
+}  // namespace detail
+NLOHMANN_JSON_NAMESPACE_END
+
+// #include <nlohmann/detail/input/position_t.hpp>
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.2
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013-2022 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+
+
+#include <cstddef> // size_t
+
+// #include <nlohmann/detail/abi_macros.hpp>
+
+
+NLOHMANN_JSON_NAMESPACE_BEGIN
+namespace detail
+{
+
+/// struct to capture the start position of the current token
+struct position_t
+{
+    /// the total number of characters read
+    std::size_t chars_read_total = 0;
+    /// the number of characters read in the current line
+    std::size_t chars_read_current_line = 0;
+    /// the number of lines read
+    std::size_t lines_read = 0;
+
+    /// conversion to size_t to preserve SAX interface
+    constexpr operator size_t() const
+    {
+        return chars_read_total;
+    }
+};
+
+}  // namespace detail
+NLOHMANN_JSON_NAMESPACE_END
+
+// #include <nlohmann/detail/macro_scope.hpp>
+
+// #include <nlohmann/detail/meta/cpp_future.hpp>
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.2
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013-2022 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2018 The Abseil Authors
+// SPDX-License-Identifier: MIT
+
+
+
+#include <array> // array
+#include <cstddef> // size_t
+#include <type_traits> // conditional, enable_if, false_type, integral_constant, is_constructible, is_integral, is_same, remove_cv, remove_reference, true_type
+#include <utility> // index_sequence, make_index_sequence, index_sequence_for
+
+// #include <nlohmann/detail/macro_scope.hpp>
+
+
+NLOHMANN_JSON_NAMESPACE_BEGIN
+namespace detail
+{
+
+template<typename T>
+using uncvref_t = typename std::remove_cv<typename std::remove_reference<T>::type>::type;
+
+#ifdef JSON_HAS_CPP_14
+
+// the following utilities are natively available in C++14
+using std::enable_if_t;
+using std::index_sequence;
+using std::make_index_sequence;
+using std::index_sequence_for;
+
+#else
+
+// alias templates to reduce boilerplate
+template<bool B, typename T = void>
+using enable_if_t = typename std::enable_if<B, T>::type;
+
+// The following code is taken from https://github.com/abseil/abseil-cpp/blob/10cb35e459f5ecca5b2ff107635da0bfa41011b4/absl/utility/utility.h
+// which is part of Google Abseil (https://github.com/abseil/abseil-cpp), licensed under the Apache License 2.0.
+
+//// START OF CODE FROM GOOGLE ABSEIL
+
+// integer_sequence
+//
+// Class template representing a compile-time integer sequence. An instantiation
+// of `integer_sequence<T, Ints...>` has a sequence of integers encoded in its
+// type through its template arguments (which is a common need when
+// working with C++11 variadic templates). `absl::integer_sequence` is designed
+// to be a drop-in replacement for C++14's `std::integer_sequence`.
+//
+// Example:
+//
+//   template< class T, T... Ints >
+//   void user_function(integer_sequence<T, Ints...>);
+//
+//   int main()
+//   {
+//     // user_function's `T` will be deduced to `int` and `Ints...`
+//     // will be deduced to `0, 1, 2, 3, 4`.
+//     user_function(make_integer_sequence<int, 5>());
+//   }
+template <typename T, T... Ints>
+struct integer_sequence
+{
+    using value_type = T;
+    static constexpr std::size_t size() noexcept
+    {
+        return sizeof...(Ints);
+    }
+};
+
+// index_sequence
+//
+// A helper template for an `integer_sequence` of `size_t`,
+// `absl::index_sequence` is designed to be a drop-in replacement for C++14's
+// `std::index_sequence`.
+template <size_t... Ints>
+using index_sequence = integer_sequence<size_t, Ints...>;
+
+namespace utility_internal
+{
+
+template <typename Seq, size_t SeqSize, size_t Rem>
+struct Extend;
+
+// Note that SeqSize == sizeof...(Ints). It's passed explicitly for efficiency.
+template <typename T, T... Ints, size_t SeqSize>
+struct Extend<integer_sequence<T, Ints...>, SeqSize, 0>
+{
+    using type = integer_sequence < T, Ints..., (Ints + SeqSize)... >;
+};
+
+template <typename T, T... Ints, size_t SeqSize>
+struct Extend<integer_sequence<T, Ints...>, SeqSize, 1>
+{
+    using type = integer_sequence < T, Ints..., (Ints + SeqSize)..., 2 * SeqSize >;
+};
+
+// Recursion helper for 'make_integer_sequence<T, N>'.
+// 'Gen<T, N>::type' is an alias for 'integer_sequence<T, 0, 1, ... N-1>'.
+template <typename T, size_t N>
+struct Gen
+{
+    using type =
+        typename Extend < typename Gen < T, N / 2 >::type, N / 2, N % 2 >::type;
+};
+
+template <typename T>
+struct Gen<T, 0>
+{
+    using type = integer_sequence<T>;
+};
+
+}  // namespace utility_internal
+
+// Compile-time sequences of integers
+
+// make_integer_sequence
+//
+// This template alias is equivalent to
+// `integer_sequence<int, 0, 1, ..., N-1>`, and is designed to be a drop-in
+// replacement for C++14's `std::make_integer_sequence`.
+template <typename T, T N>
+using make_integer_sequence = typename utility_internal::Gen<T, N>::type;
+
+// make_index_sequence
+//
+// This template alias is equivalent to `index_sequence<0, 1, ..., N-1>`,
+// and is designed to be a drop-in replacement for C++14's
+// `std::make_index_sequence`.
+template <size_t N>
+using make_index_sequence = make_integer_sequence<size_t, N>;
+
+// index_sequence_for
+//
+// Converts a typename pack into an index sequence of the same length, and
+// is designed to be a drop-in replacement for C++14's
+// `std::index_sequence_for()`
+template <typename... Ts>
+using index_sequence_for = make_index_sequence<sizeof...(Ts)>;
+
+//// END OF CODE FROM GOOGLE ABSEIL
+
+#endif
+
+// dispatch utility (taken from ranges-v3)
+template<unsigned N> struct priority_tag : priority_tag < N - 1 > {};
+template<> struct priority_tag<0> {};
+
+// taken from ranges-v3
+template<typename T>
+struct static_const
+{
+    static JSON_INLINE_VARIABLE constexpr T value{};
+};
+
+#ifndef JSON_HAS_CPP_17
+    template<typename T>
+    constexpr T static_const<T>::value;
+#endif
+
+template<typename T, typename... Args>
+inline constexpr std::array<T, sizeof...(Args)> make_array(Args&& ... args)
+{
+    return std::array<T, sizeof...(Args)> {{static_cast<T>(std::forward<Args>(args))...}};
+}
+
+}  // namespace detail
+NLOHMANN_JSON_NAMESPACE_END
+
+// #include <nlohmann/detail/meta/type_traits.hpp>
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.2
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013-2022 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+
+
+#include <limits> // numeric_limits
+#include <type_traits> // false_type, is_constructible, is_integral, is_same, true_type
+#include <utility> // declval
+#include <tuple> // tuple
+
+// #include <nlohmann/detail/iterators/iterator_traits.hpp>
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.2
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013-2022 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+
+
+#include <iterator> // random_access_iterator_tag
+
+// #include <nlohmann/detail/abi_macros.hpp>
+
+// #include <nlohmann/detail/meta/void_t.hpp>
+
+// #include <nlohmann/detail/meta/cpp_future.hpp>
+
+
+NLOHMANN_JSON_NAMESPACE_BEGIN
+namespace detail
+{
+
+template<typename It, typename = void>
+struct iterator_types {};
+
+template<typename It>
+struct iterator_types <
+    It,
+    void_t<typename It::difference_type, typename It::value_type, typename It::pointer,
+    typename It::reference, typename It::iterator_category >>
+{
+    using difference_type = typename It::difference_type;
+    using value_type = typename It::value_type;
+    using pointer = typename It::pointer;
+    using reference = typename It::reference;
+    using iterator_category = typename It::iterator_category;
+};
+
+// This is required as some compilers implement std::iterator_traits in a way that
+// doesn't work with SFINAE. See https://github.com/nlohmann/json/issues/1341.
+template<typename T, typename = void>
+struct iterator_traits
+{
+};
+
+template<typename T>
+struct iterator_traits < T, enable_if_t < !std::is_pointer<T>::value >>
+            : iterator_types<T>
+{
+};
+
+template<typename T>
+struct iterator_traits<T*, enable_if_t<std::is_object<T>::value>>
+{
+    using iterator_category = std::random_access_iterator_tag;
+    using value_type = T;
+    using difference_type = ptrdiff_t;
+    using pointer = T*;
+    using reference = T&;
+};
+
+}  // namespace detail
+NLOHMANN_JSON_NAMESPACE_END
+
+// #include <nlohmann/detail/macro_scope.hpp>
+
+// #include <nlohmann/detail/meta/call_std/begin.hpp>
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.2
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013-2022 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+
+
+// #include <nlohmann/detail/macro_scope.hpp>
+
+
+NLOHMANN_JSON_NAMESPACE_BEGIN
+
+NLOHMANN_CAN_CALL_STD_FUNC_IMPL(begin);
+
+NLOHMANN_JSON_NAMESPACE_END
+
+// #include <nlohmann/detail/meta/call_std/end.hpp>
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.2
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013-2022 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+
+
+// #include <nlohmann/detail/macro_scope.hpp>
+
+
+NLOHMANN_JSON_NAMESPACE_BEGIN
+
+NLOHMANN_CAN_CALL_STD_FUNC_IMPL(end);
+
+NLOHMANN_JSON_NAMESPACE_END
+
+// #include <nlohmann/detail/meta/cpp_future.hpp>
+
+// #include <nlohmann/detail/meta/detected.hpp>
+
+// #include <nlohmann/json_fwd.hpp>
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.2
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013-2022 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#ifndef INCLUDE_NLOHMANN_JSON_FWD_HPP_
+    #define INCLUDE_NLOHMANN_JSON_FWD_HPP_
+
+    #include <cstdint> // int64_t, uint64_t
+    #include <map> // map
+    #include <memory> // allocator
+    #include <string> // string
+    #include <vector> // vector
+
+    // #include <nlohmann/detail/abi_macros.hpp>
+
+
+    /*!
+    @brief namespace for Niels Lohmann
+    @see https://github.com/nlohmann
+    @since version 1.0.0
+    */
+    NLOHMANN_JSON_NAMESPACE_BEGIN
+
+    /*!
+    @brief default JSONSerializer template argument
+
+    This serializer ignores the template arguments and uses ADL
+    ([argument-dependent lookup](https://en.cppreference.com/w/cpp/language/adl))
+    for serialization.
+    */
+    template<typename T = void, typename SFINAE = void>
+    struct adl_serializer;
+
+    /// a class to store JSON values
+    /// @sa https://json.nlohmann.me/api/basic_json/
+    template<template<typename U, typename V, typename... Args> class ObjectType =
+    std::map,
+    template<typename U, typename... Args> class ArrayType = std::vector,
+    class StringType = std::string, class BooleanType = bool,
+    class NumberIntegerType = std::int64_t,
+    class NumberUnsignedType = std::uint64_t,
+    class NumberFloatType = double,
+    template<typename U> class AllocatorType = std::allocator,
+    template<typename T, typename SFINAE = void> class JSONSerializer =
+    adl_serializer,
+    class BinaryType = std::vector<std::uint8_t>, // cppcheck-suppress syntaxError
+    class CustomBaseClass = void>
+    class basic_json;
+
+    /// @brief JSON Pointer defines a string syntax for identifying a specific value within a JSON document
+    /// @sa https://json.nlohmann.me/api/json_pointer/
+    template<typename RefStringType>
+    class json_pointer;
+
+    /*!
+    @brief default specialization
+    @sa https://json.nlohmann.me/api/json/
+    */
+    using json = basic_json<>;
+
+    /// @brief a minimal map-like container that preserves insertion order
+    /// @sa https://json.nlohmann.me/api/ordered_map/
+    template<class Key, class T, class IgnoredLess, class Allocator>
+    struct ordered_map;
+
+    /// @brief specialization that maintains the insertion order of object keys
+    /// @sa https://json.nlohmann.me/api/ordered_json/
+    using ordered_json = basic_json<nlohmann::ordered_map>;
+
+    NLOHMANN_JSON_NAMESPACE_END
+
+#endif  // INCLUDE_NLOHMANN_JSON_FWD_HPP_
+
+
+NLOHMANN_JSON_NAMESPACE_BEGIN
+/*!
+@brief detail namespace with internal helper functions
+
+This namespace collects functions that should not be exposed,
+implementations of some @ref basic_json methods, and meta-programming helpers.
+
+@since version 2.1.0
+*/
+namespace detail
+{
+
+/////////////
+// helpers //
+/////////////
+
+// Note to maintainers:
+//
+// Every trait in this file expects a non CV-qualified type.
+// The only exceptions are in the 'aliases for detected' section
+// (i.e. those of the form: decltype(T::member_function(std::declval<T>())))
+//
+// In this case, T has to be properly CV-qualified to constraint the function arguments
+// (e.g. to_json(BasicJsonType&, const T&))
+
+template<typename> struct is_basic_json : std::false_type {};
+
+NLOHMANN_BASIC_JSON_TPL_DECLARATION
+struct is_basic_json<NLOHMANN_BASIC_JSON_TPL> : std::true_type {};
+
+// used by exceptions create() member functions
+// true_type for pointer to possibly cv-qualified basic_json or std::nullptr_t
+// false_type otherwise
+template<typename BasicJsonContext>
+struct is_basic_json_context :
+    std::integral_constant < bool,
+    is_basic_json<typename std::remove_cv<typename std::remove_pointer<BasicJsonContext>::type>::type>::value
+    || std::is_same<BasicJsonContext, std::nullptr_t>::value >
+{};
+
+//////////////////////
+// json_ref helpers //
+//////////////////////
+
+template<typename>
+class json_ref;
+
+template<typename>
+struct is_json_ref : std::false_type {};
+
+template<typename T>
+struct is_json_ref<json_ref<T>> : std::true_type {};
+
+//////////////////////////
+// aliases for detected //
+//////////////////////////
+
+template<typename T>
+using mapped_type_t = typename T::mapped_type;
+
+template<typename T>
+using key_type_t = typename T::key_type;
+
+template<typename T>
+using value_type_t = typename T::value_type;
+
+template<typename T>
+using difference_type_t = typename T::difference_type;
+
+template<typename T>
+using pointer_t = typename T::pointer;
+
+template<typename T>
+using reference_t = typename T::reference;
+
+template<typename T>
+using iterator_category_t = typename T::iterator_category;
+
+template<typename T, typename... Args>
+using to_json_function = decltype(T::to_json(std::declval<Args>()...));
+
+template<typename T, typename... Args>
+using from_json_function = decltype(T::from_json(std::declval<Args>()...));
+
+template<typename T, typename U>
+using get_template_function = decltype(std::declval<T>().template get<U>());
+
+// trait checking if JSONSerializer<T>::from_json(json const&, udt&) exists
+template<typename BasicJsonType, typename T, typename = void>
+struct has_from_json : std::false_type {};
+
+// trait checking if j.get<T> is valid
+// use this trait instead of std::is_constructible or std::is_convertible,
+// both rely on, or make use of implicit conversions, and thus fail when T
+// has several constructors/operator= (see https://github.com/nlohmann/json/issues/958)
+template <typename BasicJsonType, typename T>
+struct is_getable
+{
+    static constexpr bool value = is_detected<get_template_function, const BasicJsonType&, T>::value;
+};
+
+template<typename BasicJsonType, typename T>
+struct has_from_json < BasicJsonType, T, enable_if_t < !is_basic_json<T>::value >>
+{
+    using serializer = typename BasicJsonType::template json_serializer<T, void>;
+
+    static constexpr bool value =
+        is_detected_exact<void, from_json_function, serializer,
+        const BasicJsonType&, T&>::value;
+};
+
+// This trait checks if JSONSerializer<T>::from_json(json const&) exists
+// this overload is used for non-default-constructible user-defined-types
+template<typename BasicJsonType, typename T, typename = void>
+struct has_non_default_from_json : std::false_type {};
+
+template<typename BasicJsonType, typename T>
+struct has_non_default_from_json < BasicJsonType, T, enable_if_t < !is_basic_json<T>::value >>
+{
+    using serializer = typename BasicJsonType::template json_serializer<T, void>;
+
+    static constexpr bool value =
+        is_detected_exact<T, from_json_function, serializer,
+        const BasicJsonType&>::value;
+};
+
+// This trait checks if BasicJsonType::json_serializer<T>::to_json exists
+// Do not evaluate the trait when T is a basic_json type, to avoid template instantiation infinite recursion.
+template<typename BasicJsonType, typename T, typename = void>
+struct has_to_json : std::false_type {};
+
+template<typename BasicJsonType, typename T>
+struct has_to_json < BasicJsonType, T, enable_if_t < !is_basic_json<T>::value >>
+{
+    using serializer = typename BasicJsonType::template json_serializer<T, void>;
+
+    static constexpr bool value =
+        is_detected_exact<void, to_json_function, serializer, BasicJsonType&,
+        T>::value;
+};
+
+template<typename T>
+using detect_key_compare = typename T::key_compare;
+
+template<typename T>
+struct has_key_compare : std::integral_constant<bool, is_detected<detect_key_compare, T>::value> {};
+
+// obtains the actual object key comparator
+template<typename BasicJsonType>
+struct actual_object_comparator
+{
+    using object_t = typename BasicJsonType::object_t;
+    using object_comparator_t = typename BasicJsonType::default_object_comparator_t;
+    using type = typename std::conditional < has_key_compare<object_t>::value,
+          typename object_t::key_compare, object_comparator_t>::type;
+};
+
+template<typename BasicJsonType>
+using actual_object_comparator_t = typename actual_object_comparator<BasicJsonType>::type;
+
+///////////////////
+// is_ functions //
+///////////////////
+
+// https://en.cppreference.com/w/cpp/types/conjunction
+template<class...> struct conjunction : std::true_type { };
+template<class B> struct conjunction<B> : B { };
+template<class B, class... Bn>
+struct conjunction<B, Bn...>
+: std::conditional<static_cast<bool>(B::value), conjunction<Bn...>, B>::type {};
+
+// https://en.cppreference.com/w/cpp/types/negation
+template<class B> struct negation : std::integral_constant < bool, !B::value > { };
+
+// Reimplementation of is_constructible and is_default_constructible, due to them being broken for
+// std::pair and std::tuple until LWG 2367 fix (see https://cplusplus.github.io/LWG/lwg-defects.html#2367).
+// This causes compile errors in e.g. clang 3.5 or gcc 4.9.
+template <typename T>
+struct is_default_constructible : std::is_default_constructible<T> {};
+
+template <typename T1, typename T2>
+struct is_default_constructible<std::pair<T1, T2>>
+            : conjunction<is_default_constructible<T1>, is_default_constructible<T2>> {};
+
+template <typename T1, typename T2>
+struct is_default_constructible<const std::pair<T1, T2>>
+            : conjunction<is_default_constructible<T1>, is_default_constructible<T2>> {};
+
+template <typename... Ts>
+struct is_default_constructible<std::tuple<Ts...>>
+            : conjunction<is_default_constructible<Ts>...> {};
+
+template <typename... Ts>
+struct is_default_constructible<const std::tuple<Ts...>>
+            : conjunction<is_default_constructible<Ts>...> {};
+
+
+template <typename T, typename... Args>
+struct is_constructible : std::is_constructible<T, Args...> {};
+
+template <typename T1, typename T2>
+struct is_constructible<std::pair<T1, T2>> : is_default_constructible<std::pair<T1, T2>> {};
+
+template <typename T1, typename T2>
+struct is_constructible<const std::pair<T1, T2>> : is_default_constructible<const std::pair<T1, T2>> {};
+
+template <typename... Ts>
+struct is_constructible<std::tuple<Ts...>> : is_default_constructible<std::tuple<Ts...>> {};
+
+template <typename... Ts>
+struct is_constructible<const std::tuple<Ts...>> : is_default_constructible<const std::tuple<Ts...>> {};
+
+
+template<typename T, typename = void>
+struct is_iterator_traits : std::false_type {};
+
+template<typename T>
+struct is_iterator_traits<iterator_traits<T>>
+{
+  private:
+    using traits = iterator_traits<T>;
+
+  public:
+    static constexpr auto value =
+        is_detected<value_type_t, traits>::value &&
+        is_detected<difference_type_t, traits>::value &&
+        is_detected<pointer_t, traits>::value &&
+        is_detected<iterator_category_t, traits>::value &&
+        is_detected<reference_t, traits>::value;
+};
+
+template<typename T>
+struct is_range
+{
+  private:
+    using t_ref = typename std::add_lvalue_reference<T>::type;
+
+    using iterator = detected_t<result_of_begin, t_ref>;
+    using sentinel = detected_t<result_of_end, t_ref>;
+
+    // to be 100% correct, it should use https://en.cppreference.com/w/cpp/iterator/input_or_output_iterator
+    // and https://en.cppreference.com/w/cpp/iterator/sentinel_for
+    // but reimplementing these would be too much work, as a lot of other concepts are used underneath
+    static constexpr auto is_iterator_begin =
+        is_iterator_traits<iterator_traits<iterator>>::value;
+
+  public:
+    static constexpr bool value = !std::is_same<iterator, nonesuch>::value && !std::is_same<sentinel, nonesuch>::value && is_iterator_begin;
+};
+
+template<typename R>
+using iterator_t = enable_if_t<is_range<R>::value, result_of_begin<decltype(std::declval<R&>())>>;
+
+template<typename T>
+using range_value_t = value_type_t<iterator_traits<iterator_t<T>>>;
+
+// The following implementation of is_complete_type is taken from
+// https://blogs.msdn.microsoft.com/vcblog/2015/12/02/partial-support-for-expression-sfinae-in-vs-2015-update-1/
+// and is written by Xiang Fan who agreed to using it in this library.
+
+template<typename T, typename = void>
+struct is_complete_type : std::false_type {};
+
+template<typename T>
+struct is_complete_type<T, decltype(void(sizeof(T)))> : std::true_type {};
+
+template<typename BasicJsonType, typename CompatibleObjectType,
+         typename = void>
+struct is_compatible_object_type_impl : std::false_type {};
+
+template<typename BasicJsonType, typename CompatibleObjectType>
+struct is_compatible_object_type_impl <
+    BasicJsonType, CompatibleObjectType,
+    enable_if_t < is_detected<mapped_type_t, CompatibleObjectType>::value&&
+    is_detected<key_type_t, CompatibleObjectType>::value >>
+{
+    using object_t = typename BasicJsonType::object_t;
+
+    // macOS's is_constructible does not play well with nonesuch...
+    static constexpr bool value =
+        is_constructible<typename object_t::key_type,
+        typename CompatibleObjectType::key_type>::value &&
+        is_constructible<typename object_t::mapped_type,
+        typename CompatibleObjectType::mapped_type>::value;
+};
+
+template<typename BasicJsonType, typename CompatibleObjectType>
+struct is_compatible_object_type
+    : is_compatible_object_type_impl<BasicJsonType, CompatibleObjectType> {};
+
+template<typename BasicJsonType, typename ConstructibleObjectType,
+         typename = void>
+struct is_constructible_object_type_impl : std::false_type {};
+
+template<typename BasicJsonType, typename ConstructibleObjectType>
+struct is_constructible_object_type_impl <
+    BasicJsonType, ConstructibleObjectType,
+    enable_if_t < is_detected<mapped_type_t, ConstructibleObjectType>::value&&
+    is_detected<key_type_t, ConstructibleObjectType>::value >>
+{
+    using object_t = typename BasicJsonType::object_t;
+
+    static constexpr bool value =
+        (is_default_constructible<ConstructibleObjectType>::value &&
+         (std::is_move_assignable<ConstructibleObjectType>::value ||
+          std::is_copy_assignable<ConstructibleObjectType>::value) &&
+         (is_constructible<typename ConstructibleObjectType::key_type,
+          typename object_t::key_type>::value &&
+          std::is_same <
+          typename object_t::mapped_type,
+          typename ConstructibleObjectType::mapped_type >::value)) ||
+        (has_from_json<BasicJsonType,
+         typename ConstructibleObjectType::mapped_type>::value ||
+         has_non_default_from_json <
+         BasicJsonType,
+         typename ConstructibleObjectType::mapped_type >::value);
+};
+
+template<typename BasicJsonType, typename ConstructibleObjectType>
+struct is_constructible_object_type
+    : is_constructible_object_type_impl<BasicJsonType,
+      ConstructibleObjectType> {};
+
+template<typename BasicJsonType, typename CompatibleStringType>
+struct is_compatible_string_type
+{
+    static constexpr auto value =
+        is_constructible<typename BasicJsonType::string_t, CompatibleStringType>::value;
+};
+
+template<typename BasicJsonType, typename ConstructibleStringType>
+struct is_constructible_string_type
+{
+    // launder type through decltype() to fix compilation failure on ICPC
+#ifdef __INTEL_COMPILER
+    using laundered_type = decltype(std::declval<ConstructibleStringType>());
+#else
+    using laundered_type = ConstructibleStringType;
+#endif
+
+    static constexpr auto value =
+        conjunction <
+        is_constructible<laundered_type, typename BasicJsonType::string_t>,
+        is_detected_exact<typename BasicJsonType::string_t::value_type,
+        value_type_t, laundered_type >>::value;
+};
+
+template<typename BasicJsonType, typename CompatibleArrayType, typename = void>
+struct is_compatible_array_type_impl : std::false_type {};
+
+template<typename BasicJsonType, typename CompatibleArrayType>
+struct is_compatible_array_type_impl <
+    BasicJsonType, CompatibleArrayType,
+    enable_if_t <
+    is_detected<iterator_t, CompatibleArrayType>::value&&
+    is_iterator_traits<iterator_traits<detected_t<iterator_t, CompatibleArrayType>>>::value&&
+// special case for types like std::filesystem::path whose iterator's value_type are themselves
+// c.f. https://github.com/nlohmann/json/pull/3073
+    !std::is_same<CompatibleArrayType, detected_t<range_value_t, CompatibleArrayType>>::value >>
+{
+    static constexpr bool value =
+        is_constructible<BasicJsonType,
+        range_value_t<CompatibleArrayType>>::value;
+};
+
+template<typename BasicJsonType, typename CompatibleArrayType>
+struct is_compatible_array_type
+    : is_compatible_array_type_impl<BasicJsonType, CompatibleArrayType> {};
+
+template<typename BasicJsonType, typename ConstructibleArrayType, typename = void>
+struct is_constructible_array_type_impl : std::false_type {};
+
+template<typename BasicJsonType, typename ConstructibleArrayType>
+struct is_constructible_array_type_impl <
+    BasicJsonType, ConstructibleArrayType,
+    enable_if_t<std::is_same<ConstructibleArrayType,
+    typename BasicJsonType::value_type>::value >>
+            : std::true_type {};
+
+template<typename BasicJsonType, typename ConstructibleArrayType>
+struct is_constructible_array_type_impl <
+    BasicJsonType, ConstructibleArrayType,
+    enable_if_t < !std::is_same<ConstructibleArrayType,
+    typename BasicJsonType::value_type>::value&&
+    !is_compatible_string_type<BasicJsonType, ConstructibleArrayType>::value&&
+    is_default_constructible<ConstructibleArrayType>::value&&
+(std::is_move_assignable<ConstructibleArrayType>::value ||
+ std::is_copy_assignable<ConstructibleArrayType>::value)&&
+is_detected<iterator_t, ConstructibleArrayType>::value&&
+is_iterator_traits<iterator_traits<detected_t<iterator_t, ConstructibleArrayType>>>::value&&
+is_detected<range_value_t, ConstructibleArrayType>::value&&
+// special case for types like std::filesystem::path whose iterator's value_type are themselves
+// c.f. https://github.com/nlohmann/json/pull/3073
+!std::is_same<ConstructibleArrayType, detected_t<range_value_t, ConstructibleArrayType>>::value&&
+        is_complete_type <
+        detected_t<range_value_t, ConstructibleArrayType >>::value >>
+{
+    using value_type = range_value_t<ConstructibleArrayType>;
+
+    static constexpr bool value =
+        std::is_same<value_type,
+        typename BasicJsonType::array_t::value_type>::value ||
+        has_from_json<BasicJsonType,
+        value_type>::value ||
+        has_non_default_from_json <
+        BasicJsonType,
+        value_type >::value;
+};
+
+template<typename BasicJsonType, typename ConstructibleArrayType>
+struct is_constructible_array_type
+    : is_constructible_array_type_impl<BasicJsonType, ConstructibleArrayType> {};
+
+template<typename RealIntegerType, typename CompatibleNumberIntegerType,
+         typename = void>
+struct is_compatible_integer_type_impl : std::false_type {};
+
+template<typename RealIntegerType, typename CompatibleNumberIntegerType>
+struct is_compatible_integer_type_impl <
+    RealIntegerType, CompatibleNumberIntegerType,
+    enable_if_t < std::is_integral<RealIntegerType>::value&&
+    std::is_integral<CompatibleNumberIntegerType>::value&&
+    !std::is_same<bool, CompatibleNumberIntegerType>::value >>
+{
+    // is there an assert somewhere on overflows?
+    using RealLimits = std::numeric_limits<RealIntegerType>;
+    using CompatibleLimits = std::numeric_limits<CompatibleNumberIntegerType>;
+
+    static constexpr auto value =
+        is_constructible<RealIntegerType,
+        CompatibleNumberIntegerType>::value &&
+        CompatibleLimits::is_integer &&
+        RealLimits::is_signed == CompatibleLimits::is_signed;
+};
+
+template<typename RealIntegerType, typename CompatibleNumberIntegerType>
+struct is_compatible_integer_type
+    : is_compatible_integer_type_impl<RealIntegerType,
+      CompatibleNumberIntegerType> {};
+
+template<typename BasicJsonType, typename CompatibleType, typename = void>
+struct is_compatible_type_impl: std::false_type {};
+
+template<typename BasicJsonType, typename CompatibleType>
+struct is_compatible_type_impl <
+    BasicJsonType, CompatibleType,
+    enable_if_t<is_complete_type<CompatibleType>::value >>
+{
+    static constexpr bool value =
+        has_to_json<BasicJsonType, CompatibleType>::value;
+};
+
+template<typename BasicJsonType, typename CompatibleType>
+struct is_compatible_type
+    : is_compatible_type_impl<BasicJsonType, CompatibleType> {};
+
+template<typename T1, typename T2>
+struct is_constructible_tuple : std::false_type {};
+
+template<typename T1, typename... Args>
+struct is_constructible_tuple<T1, std::tuple<Args...>> : conjunction<is_constructible<T1, Args>...> {};
+
+template<typename BasicJsonType, typename T>
+struct is_json_iterator_of : std::false_type {};
+
+template<typename BasicJsonType>
+struct is_json_iterator_of<BasicJsonType, typename BasicJsonType::iterator> : std::true_type {};
+
+template<typename BasicJsonType>
+struct is_json_iterator_of<BasicJsonType, typename BasicJsonType::const_iterator> : std::true_type
+{};
+
+// checks if a given type T is a template specialization of Primary
+template<template <typename...> class Primary, typename T>
+struct is_specialization_of : std::false_type {};
+
+template<template <typename...> class Primary, typename... Args>
+struct is_specialization_of<Primary, Primary<Args...>> : std::true_type {};
+
+template<typename T>
+using is_json_pointer = is_specialization_of<::nlohmann::json_pointer, uncvref_t<T>>;
+
+// checks if A and B are comparable using Compare functor
+template<typename Compare, typename A, typename B, typename = void>
+struct is_comparable : std::false_type {};
+
+template<typename Compare, typename A, typename B>
+struct is_comparable<Compare, A, B, void_t<
+decltype(std::declval<Compare>()(std::declval<A>(), std::declval<B>())),
+decltype(std::declval<Compare>()(std::declval<B>(), std::declval<A>()))
+>> : std::true_type {};
+
+template<typename T>
+using detect_is_transparent = typename T::is_transparent;
+
+// type trait to check if KeyType can be used as object key (without a BasicJsonType)
+// see is_usable_as_basic_json_key_type below
+template<typename Comparator, typename ObjectKeyType, typename KeyTypeCVRef, bool RequireTransparentComparator = true,
+         bool ExcludeObjectKeyType = RequireTransparentComparator, typename KeyType = uncvref_t<KeyTypeCVRef>>
+using is_usable_as_key_type = typename std::conditional <
+                              is_comparable<Comparator, ObjectKeyType, KeyTypeCVRef>::value
+                              && !(ExcludeObjectKeyType && std::is_same<KeyType,
+                                   ObjectKeyType>::value)
+                              && (!RequireTransparentComparator
+                                  || is_detected <detect_is_transparent, Comparator>::value)
+                              && !is_json_pointer<KeyType>::value,
+                              std::true_type,
+                              std::false_type >::type;
+
+// type trait to check if KeyType can be used as object key
+// true if:
+//   - KeyType is comparable with BasicJsonType::object_t::key_type
+//   - if ExcludeObjectKeyType is true, KeyType is not BasicJsonType::object_t::key_type
+//   - the comparator is transparent or RequireTransparentComparator is false
+//   - KeyType is not a JSON iterator or json_pointer
+template<typename BasicJsonType, typename KeyTypeCVRef, bool RequireTransparentComparator = true,
+         bool ExcludeObjectKeyType = RequireTransparentComparator, typename KeyType = uncvref_t<KeyTypeCVRef>>
+using is_usable_as_basic_json_key_type = typename std::conditional <
+        is_usable_as_key_type<typename BasicJsonType::object_comparator_t,
+        typename BasicJsonType::object_t::key_type, KeyTypeCVRef,
+        RequireTransparentComparator, ExcludeObjectKeyType>::value
+        && !is_json_iterator_of<BasicJsonType, KeyType>::value,
+        std::true_type,
+        std::false_type >::type;
+
+template<typename ObjectType, typename KeyType>
+using detect_erase_with_key_type = decltype(std::declval<ObjectType&>().erase(std::declval<KeyType>()));
+
+// type trait to check if object_t has an erase() member functions accepting KeyType
+template<typename BasicJsonType, typename KeyType>
+using has_erase_with_key_type = typename std::conditional <
+                                is_detected <
+                                detect_erase_with_key_type,
+                                typename BasicJsonType::object_t, KeyType >::value,
+                                std::true_type,
+                                std::false_type >::type;
+
+// a naive helper to check if a type is an ordered_map (exploits the fact that
+// ordered_map inherits capacity() from std::vector)
+template <typename T>
+struct is_ordered_map
+{
+    using one = char;
+
+    struct two
+    {
+        char x[2]; // NOLINT(cppcoreguidelines-avoid-c-arrays,hicpp-avoid-c-arrays,modernize-avoid-c-arrays)
+    };
+
+    template <typename C> static one test( decltype(&C::capacity) ) ;
+    template <typename C> static two test(...);
+
+    enum { value = sizeof(test<T>(nullptr)) == sizeof(char) }; // NOLINT(cppcoreguidelines-pro-type-vararg,hicpp-vararg)
+};
+
+// to avoid useless casts (see https://github.com/nlohmann/json/issues/2893#issuecomment-889152324)
+template < typename T, typename U, enable_if_t < !std::is_same<T, U>::value, int > = 0 >
+T conditional_static_cast(U value)
+{
+    return static_cast<T>(value);
+}
+
+template<typename T, typename U, enable_if_t<std::is_same<T, U>::value, int> = 0>
+T conditional_static_cast(U value)
+{
+    return value;
+}
+
+template<typename... Types>
+using all_integral = conjunction<std::is_integral<Types>...>;
+
+template<typename... Types>
+using all_signed = conjunction<std::is_signed<Types>...>;
+
+template<typename... Types>
+using all_unsigned = conjunction<std::is_unsigned<Types>...>;
+
+// there's a disjunction trait in another PR; replace when merged
+template<typename... Types>
+using same_sign = std::integral_constant < bool,
+      all_signed<Types...>::value || all_unsigned<Types...>::value >;
+
+template<typename OfType, typename T>
+using never_out_of_range = std::integral_constant < bool,
+      (std::is_signed<OfType>::value && (sizeof(T) < sizeof(OfType)))
+      || (same_sign<OfType, T>::value && sizeof(OfType) == sizeof(T)) >;
+
+template<typename OfType, typename T,
+         bool OfTypeSigned = std::is_signed<OfType>::value,
+         bool TSigned = std::is_signed<T>::value>
+struct value_in_range_of_impl2;
+
+template<typename OfType, typename T>
+struct value_in_range_of_impl2<OfType, T, false, false>
+{
+    static constexpr bool test(T val)
+    {
+        using CommonType = typename std::common_type<OfType, T>::type;
+        return static_cast<CommonType>(val) <= static_cast<CommonType>((std::numeric_limits<OfType>::max)());
+    }
+};
+
+template<typename OfType, typename T>
+struct value_in_range_of_impl2<OfType, T, true, false>
+{
+    static constexpr bool test(T val)
+    {
+        using CommonType = typename std::common_type<OfType, T>::type;
+        return static_cast<CommonType>(val) <= static_cast<CommonType>((std::numeric_limits<OfType>::max)());
+    }
+};
+
+template<typename OfType, typename T>
+struct value_in_range_of_impl2<OfType, T, false, true>
+{
+    static constexpr bool test(T val)
+    {
+        using CommonType = typename std::common_type<OfType, T>::type;
+        return val >= 0 && static_cast<CommonType>(val) <= static_cast<CommonType>((std::numeric_limits<OfType>::max)());
+    }
+};
+
+
+template<typename OfType, typename T>
+struct value_in_range_of_impl2<OfType, T, true, true>
+{
+    static constexpr bool test(T val)
+    {
+        using CommonType = typename std::common_type<OfType, T>::type;
+        return static_cast<CommonType>(val) >= static_cast<CommonType>((std::numeric_limits<OfType>::min)())
+               && static_cast<CommonType>(val) <= static_cast<CommonType>((std::numeric_limits<OfType>::max)());
+    }
+};
+
+template<typename OfType, typename T,
+         bool NeverOutOfRange = never_out_of_range<OfType, T>::value,
+         typename = detail::enable_if_t<all_integral<OfType, T>::value>>
+struct value_in_range_of_impl1;
+
+template<typename OfType, typename T>
+struct value_in_range_of_impl1<OfType, T, false>
+{
+    static constexpr bool test(T val)
+    {
+        return value_in_range_of_impl2<OfType, T>::test(val);
+    }
+};
+
+template<typename OfType, typename T>
+struct value_in_range_of_impl1<OfType, T, true>
+{
+    static constexpr bool test(T /*val*/)
+    {
+        return true;
+    }
+};
+
+template<typename OfType, typename T>
+inline constexpr bool value_in_range_of(T val)
+{
+    return value_in_range_of_impl1<OfType, T>::test(val);
+}
+
+template<bool Value>
+using bool_constant = std::integral_constant<bool, Value>;
+
+///////////////////////////////////////////////////////////////////////////////
+// is_c_string
+///////////////////////////////////////////////////////////////////////////////
+
+namespace impl
+{
+
+template<typename T>
+inline constexpr bool is_c_string()
+{
+    using TUnExt = typename std::remove_extent<T>::type;
+    using TUnCVExt = typename std::remove_cv<TUnExt>::type;
+    using TUnPtr = typename std::remove_pointer<T>::type;
+    using TUnCVPtr = typename std::remove_cv<TUnPtr>::type;
+    return
+        (std::is_array<T>::value && std::is_same<TUnCVExt, char>::value)
+        || (std::is_pointer<T>::value && std::is_same<TUnCVPtr, char>::value);
+}
+
+}  // namespace impl
+
+// checks whether T is a [cv] char */[cv] char[] C string
+template<typename T>
+struct is_c_string : bool_constant<impl::is_c_string<T>()> {};
+
+template<typename T>
+using is_c_string_uncvref = is_c_string<uncvref_t<T>>;
+
+///////////////////////////////////////////////////////////////////////////////
+// is_transparent
+///////////////////////////////////////////////////////////////////////////////
+
+namespace impl
+{
+
+template<typename T>
+inline constexpr bool is_transparent()
+{
+    return is_detected<detect_is_transparent, T>::value;
+}
+
+}  // namespace impl
+
+// checks whether T has a member named is_transparent
+template<typename T>
+struct is_transparent : bool_constant<impl::is_transparent<T>()> {};
+
+///////////////////////////////////////////////////////////////////////////////
+
+}  // namespace detail
+NLOHMANN_JSON_NAMESPACE_END
+
+// #include <nlohmann/detail/string_concat.hpp>
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.2
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013-2022 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+
+
+#include <cstring> // strlen
+#include <string> // string
+#include <utility> // forward
+
+// #include <nlohmann/detail/meta/cpp_future.hpp>
+
+// #include <nlohmann/detail/meta/detected.hpp>
+
+
+NLOHMANN_JSON_NAMESPACE_BEGIN
+namespace detail
+{
+
+inline std::size_t concat_length()
+{
+    return 0;
+}
+
+template<typename... Args>
+inline std::size_t concat_length(const char* cstr, const Args& ... rest);
+
+template<typename StringType, typename... Args>
+inline std::size_t concat_length(const StringType& str, const Args& ... rest);
+
+template<typename... Args>
+inline std::size_t concat_length(const char /*c*/, const Args& ... rest)
+{
+    return 1 + concat_length(rest...);
+}
+
+template<typename... Args>
+inline std::size_t concat_length(const char* cstr, const Args& ... rest)
+{
+    // cppcheck-suppress ignoredReturnValue
+    return ::strlen(cstr) + concat_length(rest...);
+}
+
+template<typename StringType, typename... Args>
+inline std::size_t concat_length(const StringType& str, const Args& ... rest)
+{
+    return str.size() + concat_length(rest...);
+}
+
+template<typename OutStringType>
+inline void concat_into(OutStringType& /*out*/)
+{}
+
+template<typename StringType, typename Arg>
+using string_can_append = decltype(std::declval<StringType&>().append(std::declval < Arg && > ()));
+
+template<typename StringType, typename Arg>
+using detect_string_can_append = is_detected<string_can_append, StringType, Arg>;
+
+template<typename StringType, typename Arg>
+using string_can_append_op = decltype(std::declval<StringType&>() += std::declval < Arg && > ());
+
+template<typename StringType, typename Arg>
+using detect_string_can_append_op = is_detected<string_can_append_op, StringType, Arg>;
+
+template<typename StringType, typename Arg>
+using string_can_append_iter = decltype(std::declval<StringType&>().append(std::declval<const Arg&>().begin(), std::declval<const Arg&>().end()));
+
+template<typename StringType, typename Arg>
+using detect_string_can_append_iter = is_detected<string_can_append_iter, StringType, Arg>;
+
+template<typename StringType, typename Arg>
+using string_can_append_data = decltype(std::declval<StringType&>().append(std::declval<const Arg&>().data(), std::declval<const Arg&>().size()));
+
+template<typename StringType, typename Arg>
+using detect_string_can_append_data = is_detected<string_can_append_data, StringType, Arg>;
+
+template < typename OutStringType, typename Arg, typename... Args,
+           enable_if_t < !detect_string_can_append<OutStringType, Arg>::value
+                         && detect_string_can_append_op<OutStringType, Arg>::value, int > = 0 >
+inline void concat_into(OutStringType& out, Arg && arg, Args && ... rest);
+
+template < typename OutStringType, typename Arg, typename... Args,
+           enable_if_t < !detect_string_can_append<OutStringType, Arg>::value
+                         && !detect_string_can_append_op<OutStringType, Arg>::value
+                         && detect_string_can_append_iter<OutStringType, Arg>::value, int > = 0 >
+inline void concat_into(OutStringType& out, const Arg& arg, Args && ... rest);
+
+template < typename OutStringType, typename Arg, typename... Args,
+           enable_if_t < !detect_string_can_append<OutStringType, Arg>::value
+                         && !detect_string_can_append_op<OutStringType, Arg>::value
+                         && !detect_string_can_append_iter<OutStringType, Arg>::value
+                         && detect_string_can_append_data<OutStringType, Arg>::value, int > = 0 >
+inline void concat_into(OutStringType& out, const Arg& arg, Args && ... rest);
+
+template<typename OutStringType, typename Arg, typename... Args,
+         enable_if_t<detect_string_can_append<OutStringType, Arg>::value, int> = 0>
+inline void concat_into(OutStringType& out, Arg && arg, Args && ... rest)
+{
+    out.append(std::forward<Arg>(arg));
+    concat_into(out, std::forward<Args>(rest)...);
+}
+
+template < typename OutStringType, typename Arg, typename... Args,
+           enable_if_t < !detect_string_can_append<OutStringType, Arg>::value
+                         && detect_string_can_append_op<OutStringType, Arg>::value, int > >
+inline void concat_into(OutStringType& out, Arg&& arg, Args&& ... rest)
+{
+    out += std::forward<Arg>(arg);
+    concat_into(out, std::forward<Args>(rest)...);
+}
+
+template < typename OutStringType, typename Arg, typename... Args,
+           enable_if_t < !detect_string_can_append<OutStringType, Arg>::value
+                         && !detect_string_can_append_op<OutStringType, Arg>::value
+                         && detect_string_can_append_iter<OutStringType, Arg>::value, int > >
+inline void concat_into(OutStringType& out, const Arg& arg, Args&& ... rest)
+{
+    out.append(arg.begin(), arg.end());
+    concat_into(out, std::forward<Args>(rest)...);
+}
+
+template < typename OutStringType, typename Arg, typename... Args,
+           enable_if_t < !detect_string_can_append<OutStringType, Arg>::value
+                         && !detect_string_can_append_op<OutStringType, Arg>::value
+                         && !detect_string_can_append_iter<OutStringType, Arg>::value
+                         && detect_string_can_append_data<OutStringType, Arg>::value, int > >
+inline void concat_into(OutStringType& out, const Arg& arg, Args&& ... rest)
+{
+    out.append(arg.data(), arg.size());
+    concat_into(out, std::forward<Args>(rest)...);
+}
+
+template<typename OutStringType = std::string, typename... Args>
+inline OutStringType concat(Args && ... args)
+{
+    OutStringType str;
+    str.reserve(concat_length(args...));
+    concat_into(str, std::forward<Args>(args)...);
+    return str;
+}
+
+}  // namespace detail
+NLOHMANN_JSON_NAMESPACE_END
+
+
+
+NLOHMANN_JSON_NAMESPACE_BEGIN
+namespace detail
+{
+
+////////////////
+// exceptions //
+////////////////
+
+/// @brief general exception of the @ref basic_json class
+/// @sa https://json.nlohmann.me/api/basic_json/exception/
+class exception : public std::exception
+{
+  public:
+    /// returns the explanatory string
+    const char* what() const noexcept override
+    {
+        return m.what();
+    }
+
+    /// the id of the exception
+    const int id; // NOLINT(cppcoreguidelines-non-private-member-variables-in-classes)
+
+  protected:
+    JSON_HEDLEY_NON_NULL(3)
+    exception(int id_, const char* what_arg) : id(id_), m(what_arg) {} // NOLINT(bugprone-throw-keyword-missing)
+
+    static std::string name(const std::string& ename, int id_)
+    {
+        return concat("[json.exception.", ename, '.', std::to_string(id_), "] ");
+    }
+
+    static std::string diagnostics(std::nullptr_t /*leaf_element*/)
+    {
+        return "";
+    }
+
+    template<typename BasicJsonType>
+    static std::string diagnostics(const BasicJsonType* leaf_element)
+    {
+#if JSON_DIAGNOSTICS
+        std::vector<std::string> tokens;
+        for (const auto* current = leaf_element; current != nullptr && current->m_parent != nullptr; current = current->m_parent)
+        {
+            switch (current->m_parent->type())
+            {
+                case value_t::array:
+                {
+                    for (std::size_t i = 0; i < current->m_parent->m_data.m_value.array->size(); ++i)
+                    {
+                        if (&current->m_parent->m_data.m_value.array->operator[](i) == current)
+                        {
+                            tokens.emplace_back(std::to_string(i));
+                            break;
+                        }
+                    }
+                    break;
+                }
+
+                case value_t::object:
+                {
+                    for (const auto& element : *current->m_parent->m_data.m_value.object)
+                    {
+                        if (&element.second == current)
+                        {
+                            tokens.emplace_back(element.first.c_str());
+                            break;
+                        }
+                    }
+                    break;
+                }
+
+                case value_t::null: // LCOV_EXCL_LINE
+                case value_t::string: // LCOV_EXCL_LINE
+                case value_t::boolean: // LCOV_EXCL_LINE
+                case value_t::number_integer: // LCOV_EXCL_LINE
+                case value_t::number_unsigned: // LCOV_EXCL_LINE
+                case value_t::number_float: // LCOV_EXCL_LINE
+                case value_t::binary: // LCOV_EXCL_LINE
+                case value_t::discarded: // LCOV_EXCL_LINE
+                default:   // LCOV_EXCL_LINE
+                    break; // LCOV_EXCL_LINE
+            }
+        }
+
+        if (tokens.empty())
+        {
+            return "";
+        }
+
+        auto str = std::accumulate(tokens.rbegin(), tokens.rend(), std::string{},
+                                   [](const std::string & a, const std::string & b)
+        {
+            return concat(a, '/', detail::escape(b));
+        });
+        return concat('(', str, ") ");
+#else
+        static_cast<void>(leaf_element);
+        return "";
+#endif
+    }
+
+  private:
+    /// an exception object as storage for error messages
+    std::runtime_error m;
+};
+
+/// @brief exception indicating a parse error
+/// @sa https://json.nlohmann.me/api/basic_json/parse_error/
+class parse_error : public exception
+{
+  public:
+    /*!
+    @brief create a parse error exception
+    @param[in] id_       the id of the exception
+    @param[in] pos       the position where the error occurred (or with
+                         chars_read_total=0 if the position cannot be
+                         determined)
+    @param[in] what_arg  the explanatory string
+    @return parse_error object
+    */
+    template<typename BasicJsonContext, enable_if_t<is_basic_json_context<BasicJsonContext>::value, int> = 0>
+    static parse_error create(int id_, const position_t& pos, const std::string& what_arg, BasicJsonContext context)
+    {
+        const std::string w = concat(exception::name("parse_error", id_), "parse error",
+                                     position_string(pos), ": ", exception::diagnostics(context), what_arg);
+        return {id_, pos.chars_read_total, w.c_str()};
+    }
+
+    template<typename BasicJsonContext, enable_if_t<is_basic_json_context<BasicJsonContext>::value, int> = 0>
+    static parse_error create(int id_, std::size_t byte_, const std::string& what_arg, BasicJsonContext context)
+    {
+        const std::string w = concat(exception::name("parse_error", id_), "parse error",
+                                     (byte_ != 0 ? (concat(" at byte ", std::to_string(byte_))) : ""),
+                                     ": ", exception::diagnostics(context), what_arg);
+        return {id_, byte_, w.c_str()};
+    }
+
+    /*!
+    @brief byte index of the parse error
+
+    The byte index of the last read character in the input file.
+
+    @note For an input with n bytes, 1 is the index of the first character and
+          n+1 is the index of the terminating null byte or the end of file.
+          This also holds true when reading a byte vector (CBOR or MessagePack).
+    */
+    const std::size_t byte;
+
+  private:
+    parse_error(int id_, std::size_t byte_, const char* what_arg)
+        : exception(id_, what_arg), byte(byte_) {}
+
+    static std::string position_string(const position_t& pos)
+    {
+        return concat(" at line ", std::to_string(pos.lines_read + 1),
+                      ", column ", std::to_string(pos.chars_read_current_line));
+    }
+};
+
+/// @brief exception indicating errors with iterators
+/// @sa https://json.nlohmann.me/api/basic_json/invalid_iterator/
+class invalid_iterator : public exception
+{
+  public:
+    template<typename BasicJsonContext, enable_if_t<is_basic_json_context<BasicJsonContext>::value, int> = 0>
+    static invalid_iterator create(int id_, const std::string& what_arg, BasicJsonContext context)
+    {
+        const std::string w = concat(exception::name("invalid_iterator", id_), exception::diagnostics(context), what_arg);
+        return {id_, w.c_str()};
+    }
+
+  private:
+    JSON_HEDLEY_NON_NULL(3)
+    invalid_iterator(int id_, const char* what_arg)
+        : exception(id_, what_arg) {}
+};
+
+/// @brief exception indicating executing a member function with a wrong type
+/// @sa https://json.nlohmann.me/api/basic_json/type_error/
+class type_error : public exception
+{
+  public:
+    template<typename BasicJsonContext, enable_if_t<is_basic_json_context<BasicJsonContext>::value, int> = 0>
+    static type_error create(int id_, const std::string& what_arg, BasicJsonContext context)
+    {
+        const std::string w = concat(exception::name("type_error", id_), exception::diagnostics(context), what_arg);
+        return {id_, w.c_str()};
+    }
+
+  private:
+    JSON_HEDLEY_NON_NULL(3)
+    type_error(int id_, const char* what_arg) : exception(id_, what_arg) {}
+};
+
+/// @brief exception indicating access out of the defined range
+/// @sa https://json.nlohmann.me/api/basic_json/out_of_range/
+class out_of_range : public exception
+{
+  public:
+    template<typename BasicJsonContext, enable_if_t<is_basic_json_context<BasicJsonContext>::value, int> = 0>
+    static out_of_range create(int id_, const std::string& what_arg, BasicJsonContext context)
+    {
+        const std::string w = concat(exception::name("out_of_range", id_), exception::diagnostics(context), what_arg);
+        return {id_, w.c_str()};
+    }
+
+  private:
+    JSON_HEDLEY_NON_NULL(3)
+    out_of_range(int id_, const char* what_arg) : exception(id_, what_arg) {}
+};
+
+/// @brief exception indicating other library errors
+/// @sa https://json.nlohmann.me/api/basic_json/other_error/
+class other_error : public exception
+{
+  public:
+    template<typename BasicJsonContext, enable_if_t<is_basic_json_context<BasicJsonContext>::value, int> = 0>
+    static other_error create(int id_, const std::string& what_arg, BasicJsonContext context)
+    {
+        const std::string w = concat(exception::name("other_error", id_), exception::diagnostics(context), what_arg);
+        return {id_, w.c_str()};
+    }
+
+  private:
+    JSON_HEDLEY_NON_NULL(3)
+    other_error(int id_, const char* what_arg) : exception(id_, what_arg) {}
+};
+
+}  // namespace detail
+NLOHMANN_JSON_NAMESPACE_END
+
+// #include <nlohmann/detail/macro_scope.hpp>
+
+// #include <nlohmann/detail/meta/cpp_future.hpp>
+
+// #include <nlohmann/detail/meta/identity_tag.hpp>
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.2
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013-2022 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+
+
+// #include <nlohmann/detail/abi_macros.hpp>
+
+
+NLOHMANN_JSON_NAMESPACE_BEGIN
+namespace detail
+{
+
+// dispatching helper struct
+template <class T> struct identity_tag {};
+
+}  // namespace detail
+NLOHMANN_JSON_NAMESPACE_END
+
+// #include <nlohmann/detail/meta/std_fs.hpp>
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.2
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013-2022 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+
+
+// #include <nlohmann/detail/macro_scope.hpp>
+
+
+#if JSON_HAS_EXPERIMENTAL_FILESYSTEM
+#include <experimental/filesystem>
+NLOHMANN_JSON_NAMESPACE_BEGIN
+namespace detail
+{
+namespace std_fs = std::experimental::filesystem;
+}  // namespace detail
+NLOHMANN_JSON_NAMESPACE_END
+#elif JSON_HAS_FILESYSTEM
+#include <filesystem>
+NLOHMANN_JSON_NAMESPACE_BEGIN
+namespace detail
+{
+namespace std_fs = std::filesystem;
+}  // namespace detail
+NLOHMANN_JSON_NAMESPACE_END
+#endif
+
+// #include <nlohmann/detail/meta/type_traits.hpp>
+
+// #include <nlohmann/detail/string_concat.hpp>
+
+// #include <nlohmann/detail/value_t.hpp>
+
+
+NLOHMANN_JSON_NAMESPACE_BEGIN
+namespace detail
+{
+
+template<typename BasicJsonType>
+inline void from_json(const BasicJsonType& j, typename std::nullptr_t& n)
+{
+    if (JSON_HEDLEY_UNLIKELY(!j.is_null()))
+    {
+        JSON_THROW(type_error::create(302, concat("type must be null, but is ", j.type_name()), &j));
+    }
+    n = nullptr;
+}
+
+// overloads for basic_json template parameters
+template < typename BasicJsonType, typename ArithmeticType,
+           enable_if_t < std::is_arithmetic<ArithmeticType>::value&&
+                         !std::is_same<ArithmeticType, typename BasicJsonType::boolean_t>::value,
+                         int > = 0 >
+void get_arithmetic_value(const BasicJsonType& j, ArithmeticType& val)
+{
+    switch (static_cast<value_t>(j))
+    {
+        case value_t::number_unsigned:
+        {
+            val = static_cast<ArithmeticType>(*j.template get_ptr<const typename BasicJsonType::number_unsigned_t*>());
+            break;
+        }
+        case value_t::number_integer:
+        {
+            val = static_cast<ArithmeticType>(*j.template get_ptr<const typename BasicJsonType::number_integer_t*>());
+            break;
+        }
+        case value_t::number_float:
+        {
+            val = static_cast<ArithmeticType>(*j.template get_ptr<const typename BasicJsonType::number_float_t*>());
+            break;
+        }
+
+        case value_t::null:
+        case value_t::object:
+        case value_t::array:
+        case value_t::string:
+        case value_t::boolean:
+        case value_t::binary:
+        case value_t::discarded:
+        default:
+            JSON_THROW(type_error::create(302, concat("type must be number, but is ", j.type_name()), &j));
+    }
+}
+
+template<typename BasicJsonType>
+inline void from_json(const BasicJsonType& j, typename BasicJsonType::boolean_t& b)
+{
+    if (JSON_HEDLEY_UNLIKELY(!j.is_boolean()))
+    {
+        JSON_THROW(type_error::create(302, concat("type must be boolean, but is ", j.type_name()), &j));
+    }
+    b = *j.template get_ptr<const typename BasicJsonType::boolean_t*>();
+}
+
+template<typename BasicJsonType>
+inline void from_json(const BasicJsonType& j, typename BasicJsonType::string_t& s)
+{
+    if (JSON_HEDLEY_UNLIKELY(!j.is_string()))
+    {
+        JSON_THROW(type_error::create(302, concat("type must be string, but is ", j.type_name()), &j));
+    }
+    s = *j.template get_ptr<const typename BasicJsonType::string_t*>();
+}
+
+template <
+    typename BasicJsonType, typename StringType,
+    enable_if_t <
+        std::is_assignable<StringType&, const typename BasicJsonType::string_t>::value
+        && is_detected_exact<typename BasicJsonType::string_t::value_type, value_type_t, StringType>::value
+        && !std::is_same<typename BasicJsonType::string_t, StringType>::value
+        && !is_json_ref<StringType>::value, int > = 0 >
+inline void from_json(const BasicJsonType& j, StringType& s)
+{
+    if (JSON_HEDLEY_UNLIKELY(!j.is_string()))
+    {
+        JSON_THROW(type_error::create(302, concat("type must be string, but is ", j.type_name()), &j));
+    }
+
+    s = *j.template get_ptr<const typename BasicJsonType::string_t*>();
+}
+
+template<typename BasicJsonType>
+inline void from_json(const BasicJsonType& j, typename BasicJsonType::number_float_t& val)
+{
+    get_arithmetic_value(j, val);
+}
+
+template<typename BasicJsonType>
+inline void from_json(const BasicJsonType& j, typename BasicJsonType::number_unsigned_t& val)
+{
+    get_arithmetic_value(j, val);
+}
+
+template<typename BasicJsonType>
+inline void from_json(const BasicJsonType& j, typename BasicJsonType::number_integer_t& val)
+{
+    get_arithmetic_value(j, val);
+}
+
+#if !JSON_DISABLE_ENUM_SERIALIZATION
+template<typename BasicJsonType, typename EnumType,
+         enable_if_t<std::is_enum<EnumType>::value, int> = 0>
+inline void from_json(const BasicJsonType& j, EnumType& e)
+{
+    typename std::underlying_type<EnumType>::type val;
+    get_arithmetic_value(j, val);
+    e = static_cast<EnumType>(val);
+}
+#endif  // JSON_DISABLE_ENUM_SERIALIZATION
+
+// forward_list doesn't have an insert method
+template<typename BasicJsonType, typename T, typename Allocator,
+         enable_if_t<is_getable<BasicJsonType, T>::value, int> = 0>
+inline void from_json(const BasicJsonType& j, std::forward_list<T, Allocator>& l)
+{
+    if (JSON_HEDLEY_UNLIKELY(!j.is_array()))
+    {
+        JSON_THROW(type_error::create(302, concat("type must be array, but is ", j.type_name()), &j));
+    }
+    l.clear();
+    std::transform(j.rbegin(), j.rend(),
+                   std::front_inserter(l), [](const BasicJsonType & i)
+    {
+        return i.template get<T>();
+    });
+}
+
+// valarray doesn't have an insert method
+template<typename BasicJsonType, typename T,
+         enable_if_t<is_getable<BasicJsonType, T>::value, int> = 0>
+inline void from_json(const BasicJsonType& j, std::valarray<T>& l)
+{
+    if (JSON_HEDLEY_UNLIKELY(!j.is_array()))
+    {
+        JSON_THROW(type_error::create(302, concat("type must be array, but is ", j.type_name()), &j));
+    }
+    l.resize(j.size());
+    std::transform(j.begin(), j.end(), std::begin(l),
+                   [](const BasicJsonType & elem)
+    {
+        return elem.template get<T>();
+    });
+}
+
+template<typename BasicJsonType, typename T, std::size_t N>
+auto from_json(const BasicJsonType& j, T (&arr)[N])  // NOLINT(cppcoreguidelines-avoid-c-arrays,hicpp-avoid-c-arrays,modernize-avoid-c-arrays)
+-> decltype(j.template get<T>(), void())
+{
+    for (std::size_t i = 0; i < N; ++i)
+    {
+        arr[i] = j.at(i).template get<T>();
+    }
+}
+
+template<typename BasicJsonType>
+inline void from_json_array_impl(const BasicJsonType& j, typename BasicJsonType::array_t& arr, priority_tag<3> /*unused*/)
+{
+    arr = *j.template get_ptr<const typename BasicJsonType::array_t*>();
+}
+
+template<typename BasicJsonType, typename T, std::size_t N>
+auto from_json_array_impl(const BasicJsonType& j, std::array<T, N>& arr,
+                          priority_tag<2> /*unused*/)
+-> decltype(j.template get<T>(), void())
+{
+    for (std::size_t i = 0; i < N; ++i)
+    {
+        arr[i] = j.at(i).template get<T>();
+    }
+}
+
+template<typename BasicJsonType, typename ConstructibleArrayType,
+         enable_if_t<
+             std::is_assignable<ConstructibleArrayType&, ConstructibleArrayType>::value,
+             int> = 0>
+auto from_json_array_impl(const BasicJsonType& j, ConstructibleArrayType& arr, priority_tag<1> /*unused*/)
+-> decltype(
+    arr.reserve(std::declval<typename ConstructibleArrayType::size_type>()),
+    j.template get<typename ConstructibleArrayType::value_type>(),
+    void())
+{
+    using std::end;
+
+    ConstructibleArrayType ret;
+    ret.reserve(j.size());
+    std::transform(j.begin(), j.end(),
+                   std::inserter(ret, end(ret)), [](const BasicJsonType & i)
+    {
+        // get<BasicJsonType>() returns *this, this won't call a from_json
+        // method when value_type is BasicJsonType
+        return i.template get<typename ConstructibleArrayType::value_type>();
+    });
+    arr = std::move(ret);
+}
+
+template<typename BasicJsonType, typename ConstructibleArrayType,
+         enable_if_t<
+             std::is_assignable<ConstructibleArrayType&, ConstructibleArrayType>::value,
+             int> = 0>
+inline void from_json_array_impl(const BasicJsonType& j, ConstructibleArrayType& arr,
+                                 priority_tag<0> /*unused*/)
+{
+    using std::end;
+
+    ConstructibleArrayType ret;
+    std::transform(
+        j.begin(), j.end(), std::inserter(ret, end(ret)),
+        [](const BasicJsonType & i)
+    {
+        // get<BasicJsonType>() returns *this, this won't call a from_json
+        // method when value_type is BasicJsonType
+        return i.template get<typename ConstructibleArrayType::value_type>();
+    });
+    arr = std::move(ret);
+}
+
+template < typename BasicJsonType, typename ConstructibleArrayType,
+           enable_if_t <
+               is_constructible_array_type<BasicJsonType, ConstructibleArrayType>::value&&
+               !is_constructible_object_type<BasicJsonType, ConstructibleArrayType>::value&&
+               !is_constructible_string_type<BasicJsonType, ConstructibleArrayType>::value&&
+               !std::is_same<ConstructibleArrayType, typename BasicJsonType::binary_t>::value&&
+               !is_basic_json<ConstructibleArrayType>::value,
+               int > = 0 >
+auto from_json(const BasicJsonType& j, ConstructibleArrayType& arr)
+-> decltype(from_json_array_impl(j, arr, priority_tag<3> {}),
+j.template get<typename ConstructibleArrayType::value_type>(),
+void())
+{
+    if (JSON_HEDLEY_UNLIKELY(!j.is_array()))
+    {
+        JSON_THROW(type_error::create(302, concat("type must be array, but is ", j.type_name()), &j));
+    }
+
+    from_json_array_impl(j, arr, priority_tag<3> {});
+}
+
+template < typename BasicJsonType, typename T, std::size_t... Idx >
+std::array<T, sizeof...(Idx)> from_json_inplace_array_impl(BasicJsonType&& j,
+        identity_tag<std::array<T, sizeof...(Idx)>> /*unused*/, index_sequence<Idx...> /*unused*/)
+{
+    return { { std::forward<BasicJsonType>(j).at(Idx).template get<T>()... } };
+}
+
+template < typename BasicJsonType, typename T, std::size_t N >
+auto from_json(BasicJsonType&& j, identity_tag<std::array<T, N>> tag)
+-> decltype(from_json_inplace_array_impl(std::forward<BasicJsonType>(j), tag, make_index_sequence<N> {}))
+{
+    if (JSON_HEDLEY_UNLIKELY(!j.is_array()))
+    {
+        JSON_THROW(type_error::create(302, concat("type must be array, but is ", j.type_name()), &j));
+    }
+
+    return from_json_inplace_array_impl(std::forward<BasicJsonType>(j), tag, make_index_sequence<N> {});
+}
+
+template<typename BasicJsonType>
+inline void from_json(const BasicJsonType& j, typename BasicJsonType::binary_t& bin)
+{
+    if (JSON_HEDLEY_UNLIKELY(!j.is_binary()))
+    {
+        JSON_THROW(type_error::create(302, concat("type must be binary, but is ", j.type_name()), &j));
+    }
+
+    bin = *j.template get_ptr<const typename BasicJsonType::binary_t*>();
+}
+
+template<typename BasicJsonType, typename ConstructibleObjectType,
+         enable_if_t<is_constructible_object_type<BasicJsonType, ConstructibleObjectType>::value, int> = 0>
+inline void from_json(const BasicJsonType& j, ConstructibleObjectType& obj)
+{
+    if (JSON_HEDLEY_UNLIKELY(!j.is_object()))
+    {
+        JSON_THROW(type_error::create(302, concat("type must be object, but is ", j.type_name()), &j));
+    }
+
+    ConstructibleObjectType ret;
+    const auto* inner_object = j.template get_ptr<const typename BasicJsonType::object_t*>();
+    using value_type = typename ConstructibleObjectType::value_type;
+    std::transform(
+        inner_object->begin(), inner_object->end(),
+        std::inserter(ret, ret.begin()),
+        [](typename BasicJsonType::object_t::value_type const & p)
+    {
+        return value_type(p.first, p.second.template get<typename ConstructibleObjectType::mapped_type>());
+    });
+    obj = std::move(ret);
+}
+
+// overload for arithmetic types, not chosen for basic_json template arguments
+// (BooleanType, etc..); note: Is it really necessary to provide explicit
+// overloads for boolean_t etc. in case of a custom BooleanType which is not
+// an arithmetic type?
+template < typename BasicJsonType, typename ArithmeticType,
+           enable_if_t <
+               std::is_arithmetic<ArithmeticType>::value&&
+               !std::is_same<ArithmeticType, typename BasicJsonType::number_unsigned_t>::value&&
+               !std::is_same<ArithmeticType, typename BasicJsonType::number_integer_t>::value&&
+               !std::is_same<ArithmeticType, typename BasicJsonType::number_float_t>::value&&
+               !std::is_same<ArithmeticType, typename BasicJsonType::boolean_t>::value,
+               int > = 0 >
+inline void from_json(const BasicJsonType& j, ArithmeticType& val)
+{
+    switch (static_cast<value_t>(j))
+    {
+        case value_t::number_unsigned:
+        {
+            val = static_cast<ArithmeticType>(*j.template get_ptr<const typename BasicJsonType::number_unsigned_t*>());
+            break;
+        }
+        case value_t::number_integer:
+        {
+            val = static_cast<ArithmeticType>(*j.template get_ptr<const typename BasicJsonType::number_integer_t*>());
+            break;
+        }
+        case value_t::number_float:
+        {
+            val = static_cast<ArithmeticType>(*j.template get_ptr<const typename BasicJsonType::number_float_t*>());
+            break;
+        }
+        case value_t::boolean:
+        {
+            val = static_cast<ArithmeticType>(*j.template get_ptr<const typename BasicJsonType::boolean_t*>());
+            break;
+        }
+
+        case value_t::null:
+        case value_t::object:
+        case value_t::array:
+        case value_t::string:
+        case value_t::binary:
+        case value_t::discarded:
+        default:
+            JSON_THROW(type_error::create(302, concat("type must be number, but is ", j.type_name()), &j));
+    }
+}
+
+template<typename BasicJsonType, typename... Args, std::size_t... Idx>
+std::tuple<Args...> from_json_tuple_impl_base(BasicJsonType&& j, index_sequence<Idx...> /*unused*/)
+{
+    return std::make_tuple(std::forward<BasicJsonType>(j).at(Idx).template get<Args>()...);
+}
+
+template < typename BasicJsonType, class A1, class A2 >
+std::pair<A1, A2> from_json_tuple_impl(BasicJsonType&& j, identity_tag<std::pair<A1, A2>> /*unused*/, priority_tag<0> /*unused*/)
+{
+    return {std::forward<BasicJsonType>(j).at(0).template get<A1>(),
+            std::forward<BasicJsonType>(j).at(1).template get<A2>()};
+}
+
+template<typename BasicJsonType, typename A1, typename A2>
+inline void from_json_tuple_impl(BasicJsonType&& j, std::pair<A1, A2>& p, priority_tag<1> /*unused*/)
+{
+    p = from_json_tuple_impl(std::forward<BasicJsonType>(j), identity_tag<std::pair<A1, A2>> {}, priority_tag<0> {});
+}
+
+template<typename BasicJsonType, typename... Args>
+std::tuple<Args...> from_json_tuple_impl(BasicJsonType&& j, identity_tag<std::tuple<Args...>> /*unused*/, priority_tag<2> /*unused*/)
+{
+    return from_json_tuple_impl_base<BasicJsonType, Args...>(std::forward<BasicJsonType>(j), index_sequence_for<Args...> {});
+}
+
+template<typename BasicJsonType, typename... Args>
+inline void from_json_tuple_impl(BasicJsonType&& j, std::tuple<Args...>& t, priority_tag<3> /*unused*/)
+{
+    t = from_json_tuple_impl_base<BasicJsonType, Args...>(std::forward<BasicJsonType>(j), index_sequence_for<Args...> {});
+}
+
+template<typename BasicJsonType, typename TupleRelated>
+auto from_json(BasicJsonType&& j, TupleRelated&& t)
+-> decltype(from_json_tuple_impl(std::forward<BasicJsonType>(j), std::forward<TupleRelated>(t), priority_tag<3> {}))
+{
+    if (JSON_HEDLEY_UNLIKELY(!j.is_array()))
+    {
+        JSON_THROW(type_error::create(302, concat("type must be array, but is ", j.type_name()), &j));
+    }
+
+    return from_json_tuple_impl(std::forward<BasicJsonType>(j), std::forward<TupleRelated>(t), priority_tag<3> {});
+}
+
+template < typename BasicJsonType, typename Key, typename Value, typename Compare, typename Allocator,
+           typename = enable_if_t < !std::is_constructible <
+                                        typename BasicJsonType::string_t, Key >::value >>
+inline void from_json(const BasicJsonType& j, std::map<Key, Value, Compare, Allocator>& m)
+{
+    if (JSON_HEDLEY_UNLIKELY(!j.is_array()))
+    {
+        JSON_THROW(type_error::create(302, concat("type must be array, but is ", j.type_name()), &j));
+    }
+    m.clear();
+    for (const auto& p : j)
+    {
+        if (JSON_HEDLEY_UNLIKELY(!p.is_array()))
+        {
+            JSON_THROW(type_error::create(302, concat("type must be array, but is ", p.type_name()), &j));
+        }
+        m.emplace(p.at(0).template get<Key>(), p.at(1).template get<Value>());
+    }
+}
+
+template < typename BasicJsonType, typename Key, typename Value, typename Hash, typename KeyEqual, typename Allocator,
+           typename = enable_if_t < !std::is_constructible <
+                                        typename BasicJsonType::string_t, Key >::value >>
+inline void from_json(const BasicJsonType& j, std::unordered_map<Key, Value, Hash, KeyEqual, Allocator>& m)
+{
+    if (JSON_HEDLEY_UNLIKELY(!j.is_array()))
+    {
+        JSON_THROW(type_error::create(302, concat("type must be array, but is ", j.type_name()), &j));
+    }
+    m.clear();
+    for (const auto& p : j)
+    {
+        if (JSON_HEDLEY_UNLIKELY(!p.is_array()))
+        {
+            JSON_THROW(type_error::create(302, concat("type must be array, but is ", p.type_name()), &j));
+        }
+        m.emplace(p.at(0).template get<Key>(), p.at(1).template get<Value>());
+    }
+}
+
+#if JSON_HAS_FILESYSTEM || JSON_HAS_EXPERIMENTAL_FILESYSTEM
+template<typename BasicJsonType>
+inline void from_json(const BasicJsonType& j, std_fs::path& p)
+{
+    if (JSON_HEDLEY_UNLIKELY(!j.is_string()))
+    {
+        JSON_THROW(type_error::create(302, concat("type must be string, but is ", j.type_name()), &j));
+    }
+    p = *j.template get_ptr<const typename BasicJsonType::string_t*>();
+}
+#endif
+
+struct from_json_fn
+{
+    template<typename BasicJsonType, typename T>
+    auto operator()(const BasicJsonType& j, T&& val) const
+    noexcept(noexcept(from_json(j, std::forward<T>(val))))
+    -> decltype(from_json(j, std::forward<T>(val)))
+    {
+        return from_json(j, std::forward<T>(val));
+    }
+};
+
+}  // namespace detail
+
+#ifndef JSON_HAS_CPP_17
+/// namespace to hold default `from_json` function
+/// to see why this is required:
+/// http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2015/n4381.html
+namespace // NOLINT(cert-dcl59-cpp,fuchsia-header-anon-namespaces,google-build-namespaces)
+{
+#endif
+JSON_INLINE_VARIABLE constexpr const auto& from_json = // NOLINT(misc-definitions-in-headers)
+    detail::static_const<detail::from_json_fn>::value;
+#ifndef JSON_HAS_CPP_17
+}  // namespace
+#endif
+
+NLOHMANN_JSON_NAMESPACE_END
+
+// #include <nlohmann/detail/conversions/to_json.hpp>
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.2
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013-2022 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+
+
+#include <algorithm> // copy
+#include <iterator> // begin, end
+#include <string> // string
+#include <tuple> // tuple, get
+#include <type_traits> // is_same, is_constructible, is_floating_point, is_enum, underlying_type
+#include <utility> // move, forward, declval, pair
+#include <valarray> // valarray
+#include <vector> // vector
+
+// #include <nlohmann/detail/iterators/iteration_proxy.hpp>
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.2
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013-2022 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+
+
+#include <cstddef> // size_t
+#include <iterator> // input_iterator_tag
+#include <string> // string, to_string
+#include <tuple> // tuple_size, get, tuple_element
+#include <utility> // move
+
+#if JSON_HAS_RANGES
+    #include <ranges> // enable_borrowed_range
+#endif
+
+// #include <nlohmann/detail/abi_macros.hpp>
+
+// #include <nlohmann/detail/meta/type_traits.hpp>
+
+// #include <nlohmann/detail/value_t.hpp>
+
+
+NLOHMANN_JSON_NAMESPACE_BEGIN
+namespace detail
+{
+
+template<typename string_type>
+void int_to_string( string_type& target, std::size_t value )
+{
+    // For ADL
+    using std::to_string;
+    target = to_string(value);
+}
+template<typename IteratorType> class iteration_proxy_value
+{
+  public:
+    using difference_type = std::ptrdiff_t;
+    using value_type = iteration_proxy_value;
+    using pointer = value_type *;
+    using reference = value_type &;
+    using iterator_category = std::input_iterator_tag;
+    using string_type = typename std::remove_cv< typename std::remove_reference<decltype( std::declval<IteratorType>().key() ) >::type >::type;
+
+  private:
+    /// the iterator
+    IteratorType anchor{};
+    /// an index for arrays (used to create key names)
+    std::size_t array_index = 0;
+    /// last stringified array index
+    mutable std::size_t array_index_last = 0;
+    /// a string representation of the array index
+    mutable string_type array_index_str = "0";
+    /// an empty string (to return a reference for primitive values)
+    string_type empty_str{};
+
+  public:
+    explicit iteration_proxy_value() = default;
+    explicit iteration_proxy_value(IteratorType it, std::size_t array_index_ = 0)
+    noexcept(std::is_nothrow_move_constructible<IteratorType>::value
+             && std::is_nothrow_default_constructible<string_type>::value)
+        : anchor(std::move(it))
+        , array_index(array_index_)
+    {}
+
+    iteration_proxy_value(iteration_proxy_value const&) = default;
+    iteration_proxy_value& operator=(iteration_proxy_value const&) = default;
+    // older GCCs are a bit fussy and require explicit noexcept specifiers on defaulted functions
+    iteration_proxy_value(iteration_proxy_value&&)
+    noexcept(std::is_nothrow_move_constructible<IteratorType>::value
+             && std::is_nothrow_move_constructible<string_type>::value) = default;
+    iteration_proxy_value& operator=(iteration_proxy_value&&)
+    noexcept(std::is_nothrow_move_assignable<IteratorType>::value
+             && std::is_nothrow_move_assignable<string_type>::value) = default;
+    ~iteration_proxy_value() = default;
+
+    /// dereference operator (needed for range-based for)
+    const iteration_proxy_value& operator*() const
+    {
+        return *this;
+    }
+
+    /// increment operator (needed for range-based for)
+    iteration_proxy_value& operator++()
+    {
+        ++anchor;
+        ++array_index;
+
+        return *this;
+    }
+
+    iteration_proxy_value operator++(int)& // NOLINT(cert-dcl21-cpp)
+    {
+        auto tmp = iteration_proxy_value(anchor, array_index);
+        ++anchor;
+        ++array_index;
+        return tmp;
+    }
+
+    /// equality operator (needed for InputIterator)
+    bool operator==(const iteration_proxy_value& o) const
+    {
+        return anchor == o.anchor;
+    }
+
+    /// inequality operator (needed for range-based for)
+    bool operator!=(const iteration_proxy_value& o) const
+    {
+        return anchor != o.anchor;
+    }
+
+    /// return key of the iterator
+    const string_type& key() const
+    {
+        JSON_ASSERT(anchor.m_object != nullptr);
+
+        switch (anchor.m_object->type())
+        {
+            // use integer array index as key
+            case value_t::array:
+            {
+                if (array_index != array_index_last)
+                {
+                    int_to_string( array_index_str, array_index );
+                    array_index_last = array_index;
+                }
+                return array_index_str;
+            }
+
+            // use key from the object
+            case value_t::object:
+                return anchor.key();
+
+            // use an empty key for all primitive types
+            case value_t::null:
+            case value_t::string:
+            case value_t::boolean:
+            case value_t::number_integer:
+            case value_t::number_unsigned:
+            case value_t::number_float:
+            case value_t::binary:
+            case value_t::discarded:
+            default:
+                return empty_str;
+        }
+    }
+
+    /// return value of the iterator
+    typename IteratorType::reference value() const
+    {
+        return anchor.value();
+    }
+};
+
+/// proxy class for the items() function
+template<typename IteratorType> class iteration_proxy
+{
+  private:
+    /// the container to iterate
+    typename IteratorType::pointer container = nullptr;
+
+  public:
+    explicit iteration_proxy() = default;
+
+    /// construct iteration proxy from a container
+    explicit iteration_proxy(typename IteratorType::reference cont) noexcept
+        : container(&cont) {}
+
+    iteration_proxy(iteration_proxy const&) = default;
+    iteration_proxy& operator=(iteration_proxy const&) = default;
+    iteration_proxy(iteration_proxy&&) noexcept = default;
+    iteration_proxy& operator=(iteration_proxy&&) noexcept = default;
+    ~iteration_proxy() = default;
+
+    /// return iterator begin (needed for range-based for)
+    iteration_proxy_value<IteratorType> begin() const noexcept
+    {
+        return iteration_proxy_value<IteratorType>(container->begin());
+    }
+
+    /// return iterator end (needed for range-based for)
+    iteration_proxy_value<IteratorType> end() const noexcept
+    {
+        return iteration_proxy_value<IteratorType>(container->end());
+    }
+};
+
+// Structured Bindings Support
+// For further reference see https://blog.tartanllama.xyz/structured-bindings/
+// And see https://github.com/nlohmann/json/pull/1391
+template<std::size_t N, typename IteratorType, enable_if_t<N == 0, int> = 0>
+auto get(const nlohmann::detail::iteration_proxy_value<IteratorType>& i) -> decltype(i.key())
+{
+    return i.key();
+}
+// Structured Bindings Support
+// For further reference see https://blog.tartanllama.xyz/structured-bindings/
+// And see https://github.com/nlohmann/json/pull/1391
+template<std::size_t N, typename IteratorType, enable_if_t<N == 1, int> = 0>
+auto get(const nlohmann::detail::iteration_proxy_value<IteratorType>& i) -> decltype(i.value())
+{
+    return i.value();
+}
+
+}  // namespace detail
+NLOHMANN_JSON_NAMESPACE_END
+
+// The Addition to the STD Namespace is required to add
+// Structured Bindings Support to the iteration_proxy_value class
+// For further reference see https://blog.tartanllama.xyz/structured-bindings/
+// And see https://github.com/nlohmann/json/pull/1391
+namespace std
+{
+
+#if defined(__clang__)
+    // Fix: https://github.com/nlohmann/json/issues/1401
+    #pragma clang diagnostic push
+    #pragma clang diagnostic ignored "-Wmismatched-tags"
+#endif
+template<typename IteratorType>
+class tuple_size<::nlohmann::detail::iteration_proxy_value<IteratorType>> // NOLINT(cert-dcl58-cpp)
+            : public std::integral_constant<std::size_t, 2> {};
+
+template<std::size_t N, typename IteratorType>
+class tuple_element<N, ::nlohmann::detail::iteration_proxy_value<IteratorType >> // NOLINT(cert-dcl58-cpp)
+{
+  public:
+    using type = decltype(
+                     get<N>(std::declval <
+                            ::nlohmann::detail::iteration_proxy_value<IteratorType >> ()));
+};
+#if defined(__clang__)
+    #pragma clang diagnostic pop
+#endif
+
+}  // namespace std
+
+#if JSON_HAS_RANGES
+    template <typename IteratorType>
+    inline constexpr bool ::std::ranges::enable_borrowed_range<::nlohmann::detail::iteration_proxy<IteratorType>> = true;
+#endif
+
+// #include <nlohmann/detail/macro_scope.hpp>
+
+// #include <nlohmann/detail/meta/cpp_future.hpp>
+
+// #include <nlohmann/detail/meta/std_fs.hpp>
+
+// #include <nlohmann/detail/meta/type_traits.hpp>
+
+// #include <nlohmann/detail/value_t.hpp>
+
+
+NLOHMANN_JSON_NAMESPACE_BEGIN
+namespace detail
+{
+
+//////////////////
+// constructors //
+//////////////////
+
+/*
+ * Note all external_constructor<>::construct functions need to call
+ * j.m_data.m_value.destroy(j.m_data.m_type) to avoid a memory leak in case j contains an
+ * allocated value (e.g., a string). See bug issue
+ * https://github.com/nlohmann/json/issues/2865 for more information.
+ */
+
+template<value_t> struct external_constructor;
+
+template<>
+struct external_constructor<value_t::boolean>
+{
+    template<typename BasicJsonType>
+    static void construct(BasicJsonType& j, typename BasicJsonType::boolean_t b) noexcept
+    {
+        j.m_data.m_value.destroy(j.m_data.m_type);
+        j.m_data.m_type = value_t::boolean;
+        j.m_data.m_value = b;
+        j.assert_invariant();
+    }
+};
+
+template<>
+struct external_constructor<value_t::string>
+{
+    template<typename BasicJsonType>
+    static void construct(BasicJsonType& j, const typename BasicJsonType::string_t& s)
+    {
+        j.m_data.m_value.destroy(j.m_data.m_type);
+        j.m_data.m_type = value_t::string;
+        j.m_data.m_value = s;
+        j.assert_invariant();
+    }
+
+    template<typename BasicJsonType>
+    static void construct(BasicJsonType& j, typename BasicJsonType::string_t&& s)
+    {
+        j.m_data.m_value.destroy(j.m_data.m_type);
+        j.m_data.m_type = value_t::string;
+        j.m_data.m_value = std::move(s);
+        j.assert_invariant();
+    }
+
+    template < typename BasicJsonType, typename CompatibleStringType,
+               enable_if_t < !std::is_same<CompatibleStringType, typename BasicJsonType::string_t>::value,
+                             int > = 0 >
+    static void construct(BasicJsonType& j, const CompatibleStringType& str)
+    {
+        j.m_data.m_value.destroy(j.m_data.m_type);
+        j.m_data.m_type = value_t::string;
+        j.m_data.m_value.string = j.template create<typename BasicJsonType::string_t>(str);
+        j.assert_invariant();
+    }
+};
+
+template<>
+struct external_constructor<value_t::binary>
+{
+    template<typename BasicJsonType>
+    static void construct(BasicJsonType& j, const typename BasicJsonType::binary_t& b)
+    {
+        j.m_data.m_value.destroy(j.m_data.m_type);
+        j.m_data.m_type = value_t::binary;
+        j.m_data.m_value = typename BasicJsonType::binary_t(b);
+        j.assert_invariant();
+    }
+
+    template<typename BasicJsonType>
+    static void construct(BasicJsonType& j, typename BasicJsonType::binary_t&& b)
+    {
+        j.m_data.m_value.destroy(j.m_data.m_type);
+        j.m_data.m_type = value_t::binary;
+        j.m_data.m_value = typename BasicJsonType::binary_t(std::move(b));
+        j.assert_invariant();
+    }
+};
+
+template<>
+struct external_constructor<value_t::number_float>
+{
+    template<typename BasicJsonType>
+    static void construct(BasicJsonType& j, typename BasicJsonType::number_float_t val) noexcept
+    {
+        j.m_data.m_value.destroy(j.m_data.m_type);
+        j.m_data.m_type = value_t::number_float;
+        j.m_data.m_value = val;
+        j.assert_invariant();
+    }
+};
+
+template<>
+struct external_constructor<value_t::number_unsigned>
+{
+    template<typename BasicJsonType>
+    static void construct(BasicJsonType& j, typename BasicJsonType::number_unsigned_t val) noexcept
+    {
+        j.m_data.m_value.destroy(j.m_data.m_type);
+        j.m_data.m_type = value_t::number_unsigned;
+        j.m_data.m_value = val;
+        j.assert_invariant();
+    }
+};
+
+template<>
+struct external_constructor<value_t::number_integer>
+{
+    template<typename BasicJsonType>
+    static void construct(BasicJsonType& j, typename BasicJsonType::number_integer_t val) noexcept
+    {
+        j.m_data.m_value.destroy(j.m_data.m_type);
+        j.m_data.m_type = value_t::number_integer;
+        j.m_data.m_value = val;
+        j.assert_invariant();
+    }
+};
+
+template<>
+struct external_constructor<value_t::array>
+{
+    template<typename BasicJsonType>
+    static void construct(BasicJsonType& j, const typename BasicJsonType::array_t& arr)
+    {
+        j.m_data.m_value.destroy(j.m_data.m_type);
+        j.m_data.m_type = value_t::array;
+        j.m_data.m_value = arr;
+        j.set_parents();
+        j.assert_invariant();
+    }
+
+    template<typename BasicJsonType>
+    static void construct(BasicJsonType& j, typename BasicJsonType::array_t&& arr)
+    {
+        j.m_data.m_value.destroy(j.m_data.m_type);
+        j.m_data.m_type = value_t::array;
+        j.m_data.m_value = std::move(arr);
+        j.set_parents();
+        j.assert_invariant();
+    }
+
+    template < typename BasicJsonType, typename CompatibleArrayType,
+               enable_if_t < !std::is_same<CompatibleArrayType, typename BasicJsonType::array_t>::value,
+                             int > = 0 >
+    static void construct(BasicJsonType& j, const CompatibleArrayType& arr)
+    {
+        using std::begin;
+        using std::end;
+
+        j.m_data.m_value.destroy(j.m_data.m_type);
+        j.m_data.m_type = value_t::array;
+        j.m_data.m_value.array = j.template create<typename BasicJsonType::array_t>(begin(arr), end(arr));
+        j.set_parents();
+        j.assert_invariant();
+    }
+
+    template<typename BasicJsonType>
+    static void construct(BasicJsonType& j, const std::vector<bool>& arr)
+    {
+        j.m_data.m_value.destroy(j.m_data.m_type);
+        j.m_data.m_type = value_t::array;
+        j.m_data.m_value = value_t::array;
+        j.m_data.m_value.array->reserve(arr.size());
+        for (const bool x : arr)
+        {
+            j.m_data.m_value.array->push_back(x);
+            j.set_parent(j.m_data.m_value.array->back());
+        }
+        j.assert_invariant();
+    }
+
+    template<typename BasicJsonType, typename T,
+             enable_if_t<std::is_convertible<T, BasicJsonType>::value, int> = 0>
+    static void construct(BasicJsonType& j, const std::valarray<T>& arr)
+    {
+        j.m_data.m_value.destroy(j.m_data.m_type);
+        j.m_data.m_type = value_t::array;
+        j.m_data.m_value = value_t::array;
+        j.m_data.m_value.array->resize(arr.size());
+        if (arr.size() > 0)
+        {
+            std::copy(std::begin(arr), std::end(arr), j.m_data.m_value.array->begin());
+        }
+        j.set_parents();
+        j.assert_invariant();
+    }
+};
+
+template<>
+struct external_constructor<value_t::object>
+{
+    template<typename BasicJsonType>
+    static void construct(BasicJsonType& j, const typename BasicJsonType::object_t& obj)
+    {
+        j.m_data.m_value.destroy(j.m_data.m_type);
+        j.m_data.m_type = value_t::object;
+        j.m_data.m_value = obj;
+        j.set_parents();
+        j.assert_invariant();
+    }
+
+    template<typename BasicJsonType>
+    static void construct(BasicJsonType& j, typename BasicJsonType::object_t&& obj)
+    {
+        j.m_data.m_value.destroy(j.m_data.m_type);
+        j.m_data.m_type = value_t::object;
+        j.m_data.m_value = std::move(obj);
+        j.set_parents();
+        j.assert_invariant();
+    }
+
+    template < typename BasicJsonType, typename CompatibleObjectType,
+               enable_if_t < !std::is_same<CompatibleObjectType, typename BasicJsonType::object_t>::value, int > = 0 >
+    static void construct(BasicJsonType& j, const CompatibleObjectType& obj)
+    {
+        using std::begin;
+        using std::end;
+
+        j.m_data.m_value.destroy(j.m_data.m_type);
+        j.m_data.m_type = value_t::object;
+        j.m_data.m_value.object = j.template create<typename BasicJsonType::object_t>(begin(obj), end(obj));
+        j.set_parents();
+        j.assert_invariant();
+    }
+};
+
+/////////////
+// to_json //
+/////////////
+
+template<typename BasicJsonType, typename T,
+         enable_if_t<std::is_same<T, typename BasicJsonType::boolean_t>::value, int> = 0>
+inline void to_json(BasicJsonType& j, T b) noexcept
+{
+    external_constructor<value_t::boolean>::construct(j, b);
+}
+
+template < typename BasicJsonType, typename BoolRef,
+           enable_if_t <
+               ((std::is_same<std::vector<bool>::reference, BoolRef>::value
+                 && !std::is_same <std::vector<bool>::reference, typename BasicJsonType::boolean_t&>::value)
+                || (std::is_same<std::vector<bool>::const_reference, BoolRef>::value
+                    && !std::is_same <detail::uncvref_t<std::vector<bool>::const_reference>,
+                                      typename BasicJsonType::boolean_t >::value))
+               && std::is_convertible<const BoolRef&, typename BasicJsonType::boolean_t>::value, int > = 0 >
+inline void to_json(BasicJsonType& j, const BoolRef& b) noexcept
+{
+    external_constructor<value_t::boolean>::construct(j, static_cast<typename BasicJsonType::boolean_t>(b));
+}
+
+template<typename BasicJsonType, typename CompatibleString,
+         enable_if_t<std::is_constructible<typename BasicJsonType::string_t, CompatibleString>::value, int> = 0>
+inline void to_json(BasicJsonType& j, const CompatibleString& s)
+{
+    external_constructor<value_t::string>::construct(j, s);
+}
+
+template<typename BasicJsonType>
+inline void to_json(BasicJsonType& j, typename BasicJsonType::string_t&& s)
+{
+    external_constructor<value_t::string>::construct(j, std::move(s));
+}
+
+template<typename BasicJsonType, typename FloatType,
+         enable_if_t<std::is_floating_point<FloatType>::value, int> = 0>
+inline void to_json(BasicJsonType& j, FloatType val) noexcept
+{
+    external_constructor<value_t::number_float>::construct(j, static_cast<typename BasicJsonType::number_float_t>(val));
+}
+
+template<typename BasicJsonType, typename CompatibleNumberUnsignedType,
+         enable_if_t<is_compatible_integer_type<typename BasicJsonType::number_unsigned_t, CompatibleNumberUnsignedType>::value, int> = 0>
+inline void to_json(BasicJsonType& j, CompatibleNumberUnsignedType val) noexcept
+{
+    external_constructor<value_t::number_unsigned>::construct(j, static_cast<typename BasicJsonType::number_unsigned_t>(val));
+}
+
+template<typename BasicJsonType, typename CompatibleNumberIntegerType,
+         enable_if_t<is_compatible_integer_type<typename BasicJsonType::number_integer_t, CompatibleNumberIntegerType>::value, int> = 0>
+inline void to_json(BasicJsonType& j, CompatibleNumberIntegerType val) noexcept
+{
+    external_constructor<value_t::number_integer>::construct(j, static_cast<typename BasicJsonType::number_integer_t>(val));
+}
+
+#if !JSON_DISABLE_ENUM_SERIALIZATION
+template<typename BasicJsonType, typename EnumType,
+         enable_if_t<std::is_enum<EnumType>::value, int> = 0>
+inline void to_json(BasicJsonType& j, EnumType e) noexcept
+{
+    using underlying_type = typename std::underlying_type<EnumType>::type;
+    external_constructor<value_t::number_integer>::construct(j, static_cast<underlying_type>(e));
+}
+#endif  // JSON_DISABLE_ENUM_SERIALIZATION
+
+template<typename BasicJsonType>
+inline void to_json(BasicJsonType& j, const std::vector<bool>& e)
+{
+    external_constructor<value_t::array>::construct(j, e);
+}
+
+template < typename BasicJsonType, typename CompatibleArrayType,
+           enable_if_t < is_compatible_array_type<BasicJsonType,
+                         CompatibleArrayType>::value&&
+                         !is_compatible_object_type<BasicJsonType, CompatibleArrayType>::value&&
+                         !is_compatible_string_type<BasicJsonType, CompatibleArrayType>::value&&
+                         !std::is_same<typename BasicJsonType::binary_t, CompatibleArrayType>::value&&
+                         !is_basic_json<CompatibleArrayType>::value,
+                         int > = 0 >
+inline void to_json(BasicJsonType& j, const CompatibleArrayType& arr)
+{
+    external_constructor<value_t::array>::construct(j, arr);
+}
+
+template<typename BasicJsonType>
+inline void to_json(BasicJsonType& j, const typename BasicJsonType::binary_t& bin)
+{
+    external_constructor<value_t::binary>::construct(j, bin);
+}
+
+template<typename BasicJsonType, typename T,
+         enable_if_t<std::is_convertible<T, BasicJsonType>::value, int> = 0>
+inline void to_json(BasicJsonType& j, const std::valarray<T>& arr)
+{
+    external_constructor<value_t::array>::construct(j, std::move(arr));
+}
+
+template<typename BasicJsonType>
+inline void to_json(BasicJsonType& j, typename BasicJsonType::array_t&& arr)
+{
+    external_constructor<value_t::array>::construct(j, std::move(arr));
+}
+
+template < typename BasicJsonType, typename CompatibleObjectType,
+           enable_if_t < is_compatible_object_type<BasicJsonType, CompatibleObjectType>::value&& !is_basic_json<CompatibleObjectType>::value, int > = 0 >
+inline void to_json(BasicJsonType& j, const CompatibleObjectType& obj)
+{
+    external_constructor<value_t::object>::construct(j, obj);
+}
+
+template<typename BasicJsonType>
+inline void to_json(BasicJsonType& j, typename BasicJsonType::object_t&& obj)
+{
+    external_constructor<value_t::object>::construct(j, std::move(obj));
+}
+
+template <
+    typename BasicJsonType, typename T, std::size_t N,
+    enable_if_t < !std::is_constructible<typename BasicJsonType::string_t,
+                  const T(&)[N]>::value, // NOLINT(cppcoreguidelines-avoid-c-arrays,hicpp-avoid-c-arrays,modernize-avoid-c-arrays)
+                  int > = 0 >
+inline void to_json(BasicJsonType& j, const T(&arr)[N]) // NOLINT(cppcoreguidelines-avoid-c-arrays,hicpp-avoid-c-arrays,modernize-avoid-c-arrays)
+{
+    external_constructor<value_t::array>::construct(j, arr);
+}
+
+template < typename BasicJsonType, typename T1, typename T2, enable_if_t < std::is_constructible<BasicJsonType, T1>::value&& std::is_constructible<BasicJsonType, T2>::value, int > = 0 >
+inline void to_json(BasicJsonType& j, const std::pair<T1, T2>& p)
+{
+    j = { p.first, p.second };
+}
+
+// for https://github.com/nlohmann/json/pull/1134
+template<typename BasicJsonType, typename T,
+         enable_if_t<std::is_same<T, iteration_proxy_value<typename BasicJsonType::iterator>>::value, int> = 0>
+inline void to_json(BasicJsonType& j, const T& b)
+{
+    j = { {b.key(), b.value()} };
+}
+
+template<typename BasicJsonType, typename Tuple, std::size_t... Idx>
+inline void to_json_tuple_impl(BasicJsonType& j, const Tuple& t, index_sequence<Idx...> /*unused*/)
+{
+    j = { std::get<Idx>(t)... };
+}
+
+template<typename BasicJsonType, typename T, enable_if_t<is_constructible_tuple<BasicJsonType, T>::value, int > = 0>
+inline void to_json(BasicJsonType& j, const T& t)
+{
+    to_json_tuple_impl(j, t, make_index_sequence<std::tuple_size<T>::value> {});
+}
+
+#if JSON_HAS_FILESYSTEM || JSON_HAS_EXPERIMENTAL_FILESYSTEM
+template<typename BasicJsonType>
+inline void to_json(BasicJsonType& j, const std_fs::path& p)
+{
+    j = p.string();
+}
+#endif
+
+struct to_json_fn
+{
+    template<typename BasicJsonType, typename T>
+    auto operator()(BasicJsonType& j, T&& val) const noexcept(noexcept(to_json(j, std::forward<T>(val))))
+    -> decltype(to_json(j, std::forward<T>(val)), void())
+    {
+        return to_json(j, std::forward<T>(val));
+    }
+};
+}  // namespace detail
+
+#ifndef JSON_HAS_CPP_17
+/// namespace to hold default `to_json` function
+/// to see why this is required:
+/// http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2015/n4381.html
+namespace // NOLINT(cert-dcl59-cpp,fuchsia-header-anon-namespaces,google-build-namespaces)
+{
+#endif
+JSON_INLINE_VARIABLE constexpr const auto& to_json = // NOLINT(misc-definitions-in-headers)
+    detail::static_const<detail::to_json_fn>::value;
+#ifndef JSON_HAS_CPP_17
+}  // namespace
+#endif
+
+NLOHMANN_JSON_NAMESPACE_END
+
+// #include <nlohmann/detail/meta/identity_tag.hpp>
+
+
+NLOHMANN_JSON_NAMESPACE_BEGIN
+
+/// @sa https://json.nlohmann.me/api/adl_serializer/
+template<typename ValueType, typename>
+struct adl_serializer
+{
+    /// @brief convert a JSON value to any value type
+    /// @sa https://json.nlohmann.me/api/adl_serializer/from_json/
+    template<typename BasicJsonType, typename TargetType = ValueType>
+    static auto from_json(BasicJsonType && j, TargetType& val) noexcept(
+        noexcept(::nlohmann::from_json(std::forward<BasicJsonType>(j), val)))
+    -> decltype(::nlohmann::from_json(std::forward<BasicJsonType>(j), val), void())
+    {
+        ::nlohmann::from_json(std::forward<BasicJsonType>(j), val);
+    }
+
+    /// @brief convert a JSON value to any value type
+    /// @sa https://json.nlohmann.me/api/adl_serializer/from_json/
+    template<typename BasicJsonType, typename TargetType = ValueType>
+    static auto from_json(BasicJsonType && j) noexcept(
+    noexcept(::nlohmann::from_json(std::forward<BasicJsonType>(j), detail::identity_tag<TargetType> {})))
+    -> decltype(::nlohmann::from_json(std::forward<BasicJsonType>(j), detail::identity_tag<TargetType> {}))
+    {
+        return ::nlohmann::from_json(std::forward<BasicJsonType>(j), detail::identity_tag<TargetType> {});
+    }
+
+    /// @brief convert any value type to a JSON value
+    /// @sa https://json.nlohmann.me/api/adl_serializer/to_json/
+    template<typename BasicJsonType, typename TargetType = ValueType>
+    static auto to_json(BasicJsonType& j, TargetType && val) noexcept(
+        noexcept(::nlohmann::to_json(j, std::forward<TargetType>(val))))
+    -> decltype(::nlohmann::to_json(j, std::forward<TargetType>(val)), void())
+    {
+        ::nlohmann::to_json(j, std::forward<TargetType>(val));
+    }
+};
+
+NLOHMANN_JSON_NAMESPACE_END
+
+// #include <nlohmann/byte_container_with_subtype.hpp>
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.2
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013-2022 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+
+
+#include <cstdint> // uint8_t, uint64_t
+#include <tuple> // tie
+#include <utility> // move
+
+// #include <nlohmann/detail/abi_macros.hpp>
+
+
+NLOHMANN_JSON_NAMESPACE_BEGIN
+
+/// @brief an internal type for a backed binary type
+/// @sa https://json.nlohmann.me/api/byte_container_with_subtype/
+template<typename BinaryType>
+class byte_container_with_subtype : public BinaryType
+{
+  public:
+    using container_type = BinaryType;
+    using subtype_type = std::uint64_t;
+
+    /// @sa https://json.nlohmann.me/api/byte_container_with_subtype/byte_container_with_subtype/
+    byte_container_with_subtype() noexcept(noexcept(container_type()))
+        : container_type()
+    {}
+
+    /// @sa https://json.nlohmann.me/api/byte_container_with_subtype/byte_container_with_subtype/
+    byte_container_with_subtype(const container_type& b) noexcept(noexcept(container_type(b)))
+        : container_type(b)
+    {}
+
+    /// @sa https://json.nlohmann.me/api/byte_container_with_subtype/byte_container_with_subtype/
+    byte_container_with_subtype(container_type&& b) noexcept(noexcept(container_type(std::move(b))))
+        : container_type(std::move(b))
+    {}
+
+    /// @sa https://json.nlohmann.me/api/byte_container_with_subtype/byte_container_with_subtype/
+    byte_container_with_subtype(const container_type& b, subtype_type subtype_) noexcept(noexcept(container_type(b)))
+        : container_type(b)
+        , m_subtype(subtype_)
+        , m_has_subtype(true)
+    {}
+
+    /// @sa https://json.nlohmann.me/api/byte_container_with_subtype/byte_container_with_subtype/
+    byte_container_with_subtype(container_type&& b, subtype_type subtype_) noexcept(noexcept(container_type(std::move(b))))
+        : container_type(std::move(b))
+        , m_subtype(subtype_)
+        , m_has_subtype(true)
+    {}
+
+    bool operator==(const byte_container_with_subtype& rhs) const
+    {
+        return std::tie(static_cast<const BinaryType&>(*this), m_subtype, m_has_subtype) ==
+               std::tie(static_cast<const BinaryType&>(rhs), rhs.m_subtype, rhs.m_has_subtype);
+    }
+
+    bool operator!=(const byte_container_with_subtype& rhs) const
+    {
+        return !(rhs == *this);
+    }
+
+    /// @brief sets the binary subtype
+    /// @sa https://json.nlohmann.me/api/byte_container_with_subtype/set_subtype/
+    void set_subtype(subtype_type subtype_) noexcept
+    {
+        m_subtype = subtype_;
+        m_has_subtype = true;
+    }
+
+    /// @brief return the binary subtype
+    /// @sa https://json.nlohmann.me/api/byte_container_with_subtype/subtype/
+    constexpr subtype_type subtype() const noexcept
+    {
+        return m_has_subtype ? m_subtype : static_cast<subtype_type>(-1);
+    }
+
+    /// @brief return whether the value has a subtype
+    /// @sa https://json.nlohmann.me/api/byte_container_with_subtype/has_subtype/
+    constexpr bool has_subtype() const noexcept
+    {
+        return m_has_subtype;
+    }
+
+    /// @brief clears the binary subtype
+    /// @sa https://json.nlohmann.me/api/byte_container_with_subtype/clear_subtype/
+    void clear_subtype() noexcept
+    {
+        m_subtype = 0;
+        m_has_subtype = false;
+    }
+
+  private:
+    subtype_type m_subtype = 0;
+    bool m_has_subtype = false;
+};
+
+NLOHMANN_JSON_NAMESPACE_END
+
+// #include <nlohmann/detail/conversions/from_json.hpp>
+
+// #include <nlohmann/detail/conversions/to_json.hpp>
+
+// #include <nlohmann/detail/exceptions.hpp>
+
+// #include <nlohmann/detail/hash.hpp>
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.2
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013-2022 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+
+
+#include <cstdint> // uint8_t
+#include <cstddef> // size_t
+#include <functional> // hash
+
+// #include <nlohmann/detail/abi_macros.hpp>
+
+// #include <nlohmann/detail/value_t.hpp>
+
+
+NLOHMANN_JSON_NAMESPACE_BEGIN
+namespace detail
+{
+
+// boost::hash_combine
+inline std::size_t combine(std::size_t seed, std::size_t h) noexcept
+{
+    seed ^= h + 0x9e3779b9 + (seed << 6U) + (seed >> 2U);
+    return seed;
+}
+
+/*!
+@brief hash a JSON value
+
+The hash function tries to rely on std::hash where possible. Furthermore, the
+type of the JSON value is taken into account to have different hash values for
+null, 0, 0U, and false, etc.
+
+@tparam BasicJsonType basic_json specialization
+@param j JSON value to hash
+@return hash value of j
+*/
+template<typename BasicJsonType>
+std::size_t hash(const BasicJsonType& j)
+{
+    using string_t = typename BasicJsonType::string_t;
+    using number_integer_t = typename BasicJsonType::number_integer_t;
+    using number_unsigned_t = typename BasicJsonType::number_unsigned_t;
+    using number_float_t = typename BasicJsonType::number_float_t;
+
+    const auto type = static_cast<std::size_t>(j.type());
+    switch (j.type())
+    {
+        case BasicJsonType::value_t::null:
+        case BasicJsonType::value_t::discarded:
+        {
+            return combine(type, 0);
+        }
+
+        case BasicJsonType::value_t::object:
+        {
+            auto seed = combine(type, j.size());
+            for (const auto& element : j.items())
+            {
+                const auto h = std::hash<string_t> {}(element.key());
+                seed = combine(seed, h);
+                seed = combine(seed, hash(element.value()));
+            }
+            return seed;
+        }
+
+        case BasicJsonType::value_t::array:
+        {
+            auto seed = combine(type, j.size());
+            for (const auto& element : j)
+            {
+                seed = combine(seed, hash(element));
+            }
+            return seed;
+        }
+
+        case BasicJsonType::value_t::string:
+        {
+            const auto h = std::hash<string_t> {}(j.template get_ref<const string_t&>());
+            return combine(type, h);
+        }
+
+        case BasicJsonType::value_t::boolean:
+        {
+            const auto h = std::hash<bool> {}(j.template get<bool>());
+            return combine(type, h);
+        }
+
+        case BasicJsonType::value_t::number_integer:
+        {
+            const auto h = std::hash<number_integer_t> {}(j.template get<number_integer_t>());
+            return combine(type, h);
+        }
+
+        case BasicJsonType::value_t::number_unsigned:
+        {
+            const auto h = std::hash<number_unsigned_t> {}(j.template get<number_unsigned_t>());
+            return combine(type, h);
+        }
+
+        case BasicJsonType::value_t::number_float:
+        {
+            const auto h = std::hash<number_float_t> {}(j.template get<number_float_t>());
+            return combine(type, h);
+        }
+
+        case BasicJsonType::value_t::binary:
+        {
+            auto seed = combine(type, j.get_binary().size());
+            const auto h = std::hash<bool> {}(j.get_binary().has_subtype());
+            seed = combine(seed, h);
+            seed = combine(seed, static_cast<std::size_t>(j.get_binary().subtype()));
+            for (const auto byte : j.get_binary())
+            {
+                seed = combine(seed, std::hash<std::uint8_t> {}(byte));
+            }
+            return seed;
+        }
+
+        default:                   // LCOV_EXCL_LINE
+            JSON_ASSERT(false); // NOLINT(cert-dcl03-c,hicpp-static-assert,misc-static-assert) LCOV_EXCL_LINE
+            return 0;              // LCOV_EXCL_LINE
+    }
+}
+
+}  // namespace detail
+NLOHMANN_JSON_NAMESPACE_END
+
+// #include <nlohmann/detail/input/binary_reader.hpp>
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.2
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013-2022 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+
+
+#include <algorithm> // generate_n
+#include <array> // array
+#include <cmath> // ldexp
+#include <cstddef> // size_t
+#include <cstdint> // uint8_t, uint16_t, uint32_t, uint64_t
+#include <cstdio> // snprintf
+#include <cstring> // memcpy
+#include <iterator> // back_inserter
+#include <limits> // numeric_limits
+#include <string> // char_traits, string
+#include <utility> // make_pair, move
+#include <vector> // vector
+
+// #include <nlohmann/detail/exceptions.hpp>
+
+// #include <nlohmann/detail/input/input_adapters.hpp>
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.2
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013-2022 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+
+
+#include <array> // array
+#include <cstddef> // size_t
+#include <cstring> // strlen
+#include <iterator> // begin, end, iterator_traits, random_access_iterator_tag, distance, next
+#include <memory> // shared_ptr, make_shared, addressof
+#include <numeric> // accumulate
+#include <string> // string, char_traits
+#include <type_traits> // enable_if, is_base_of, is_pointer, is_integral, remove_pointer
+#include <utility> // pair, declval
+
+#ifndef JSON_NO_IO
+    #include <cstdio>   // FILE *
+    #include <istream>  // istream
+#endif                  // JSON_NO_IO
+
+// #include <nlohmann/detail/iterators/iterator_traits.hpp>
+
+// #include <nlohmann/detail/macro_scope.hpp>
+
+
+NLOHMANN_JSON_NAMESPACE_BEGIN
+namespace detail
+{
+
+/// the supported input formats
+enum class input_format_t { json, cbor, msgpack, ubjson, bson, bjdata };
+
+////////////////////
+// input adapters //
+////////////////////
+
+#ifndef JSON_NO_IO
+/*!
+Input adapter for stdio file access. This adapter read only 1 byte and do not use any
+ buffer. This adapter is a very low level adapter.
+*/
+class file_input_adapter
+{
+  public:
+    using char_type = char;
+
+    JSON_HEDLEY_NON_NULL(2)
+    explicit file_input_adapter(std::FILE* f) noexcept
+        : m_file(f)
+    {
+        JSON_ASSERT(m_file != nullptr);
+    }
+
+    // make class move-only
+    file_input_adapter(const file_input_adapter&) = delete;
+    file_input_adapter(file_input_adapter&&) noexcept = default;
+    file_input_adapter& operator=(const file_input_adapter&) = delete;
+    file_input_adapter& operator=(file_input_adapter&&) = delete;
+    ~file_input_adapter() = default;
+
+    std::char_traits<char>::int_type get_character() noexcept
+    {
+        return std::fgetc(m_file);
+    }
+
+  private:
+    /// the file pointer to read from
+    std::FILE* m_file;
+};
+
+
+/*!
+Input adapter for a (caching) istream. Ignores a UFT Byte Order Mark at
+beginning of input. Does not support changing the underlying std::streambuf
+in mid-input. Maintains underlying std::istream and std::streambuf to support
+subsequent use of standard std::istream operations to process any input
+characters following those used in parsing the JSON input.  Clears the
+std::istream flags; any input errors (e.g., EOF) will be detected by the first
+subsequent call for input from the std::istream.
+*/
+class input_stream_adapter
+{
+  public:
+    using char_type = char;
+
+    ~input_stream_adapter()
+    {
+        // clear stream flags; we use underlying streambuf I/O, do not
+        // maintain ifstream flags, except eof
+        if (is != nullptr)
+        {
+            is->clear(is->rdstate() & std::ios::eofbit);
+        }
+    }
+
+    explicit input_stream_adapter(std::istream& i)
+        : is(&i), sb(i.rdbuf())
+    {}
+
+    // delete because of pointer members
+    input_stream_adapter(const input_stream_adapter&) = delete;
+    input_stream_adapter& operator=(input_stream_adapter&) = delete;
+    input_stream_adapter& operator=(input_stream_adapter&&) = delete;
+
+    input_stream_adapter(input_stream_adapter&& rhs) noexcept
+        : is(rhs.is), sb(rhs.sb)
+    {
+        rhs.is = nullptr;
+        rhs.sb = nullptr;
+    }
+
+    // std::istream/std::streambuf use std::char_traits<char>::to_int_type, to
+    // ensure that std::char_traits<char>::eof() and the character 0xFF do not
+    // end up as the same value, e.g. 0xFFFFFFFF.
+    std::char_traits<char>::int_type get_character()
+    {
+        auto res = sb->sbumpc();
+        // set eof manually, as we don't use the istream interface.
+        if (JSON_HEDLEY_UNLIKELY(res == std::char_traits<char>::eof()))
+        {
+            is->clear(is->rdstate() | std::ios::eofbit);
+        }
+        return res;
+    }
+
+  private:
+    /// the associated input stream
+    std::istream* is = nullptr;
+    std::streambuf* sb = nullptr;
+};
+#endif  // JSON_NO_IO
+
+// General-purpose iterator-based adapter. It might not be as fast as
+// theoretically possible for some containers, but it is extremely versatile.
+template<typename IteratorType>
+class iterator_input_adapter
+{
+  public:
+    using char_type = typename std::iterator_traits<IteratorType>::value_type;
+
+    iterator_input_adapter(IteratorType first, IteratorType last)
+        : current(std::move(first)), end(std::move(last))
+    {}
+
+    typename std::char_traits<char_type>::int_type get_character()
+    {
+        if (JSON_HEDLEY_LIKELY(current != end))
+        {
+            auto result = std::char_traits<char_type>::to_int_type(*current);
+            std::advance(current, 1);
+            return result;
+        }
+
+        return std::char_traits<char_type>::eof();
+    }
+
+  private:
+    IteratorType current;
+    IteratorType end;
+
+    template<typename BaseInputAdapter, size_t T>
+    friend struct wide_string_input_helper;
+
+    bool empty() const
+    {
+        return current == end;
+    }
+};
+
+
+template<typename BaseInputAdapter, size_t T>
+struct wide_string_input_helper;
+
+template<typename BaseInputAdapter>
+struct wide_string_input_helper<BaseInputAdapter, 4>
+{
+    // UTF-32
+    static void fill_buffer(BaseInputAdapter& input,
+                            std::array<std::char_traits<char>::int_type, 4>& utf8_bytes,
+                            size_t& utf8_bytes_index,
+                            size_t& utf8_bytes_filled)
+    {
+        utf8_bytes_index = 0;
+
+        if (JSON_HEDLEY_UNLIKELY(input.empty()))
+        {
+            utf8_bytes[0] = std::char_traits<char>::eof();
+            utf8_bytes_filled = 1;
+        }
+        else
+        {
+            // get the current character
+            const auto wc = input.get_character();
+
+            // UTF-32 to UTF-8 encoding
+            if (wc < 0x80)
+            {
+                utf8_bytes[0] = static_cast<std::char_traits<char>::int_type>(wc);
+                utf8_bytes_filled = 1;
+            }
+            else if (wc <= 0x7FF)
+            {
+                utf8_bytes[0] = static_cast<std::char_traits<char>::int_type>(0xC0u | ((static_cast<unsigned int>(wc) >> 6u) & 0x1Fu));
+                utf8_bytes[1] = static_cast<std::char_traits<char>::int_type>(0x80u | (static_cast<unsigned int>(wc) & 0x3Fu));
+                utf8_bytes_filled = 2;
+            }
+            else if (wc <= 0xFFFF)
+            {
+                utf8_bytes[0] = static_cast<std::char_traits<char>::int_type>(0xE0u | ((static_cast<unsigned int>(wc) >> 12u) & 0x0Fu));
+                utf8_bytes[1] = static_cast<std::char_traits<char>::int_type>(0x80u | ((static_cast<unsigned int>(wc) >> 6u) & 0x3Fu));
+                utf8_bytes[2] = static_cast<std::char_traits<char>::int_type>(0x80u | (static_cast<unsigned int>(wc) & 0x3Fu));
+                utf8_bytes_filled = 3;
+            }
+            else if (wc <= 0x10FFFF)
+            {
+                utf8_bytes[0] = static_cast<std::char_traits<char>::int_type>(0xF0u | ((static_cast<unsigned int>(wc) >> 18u) & 0x07u));
+                utf8_bytes[1] = static_cast<std::char_traits<char>::int_type>(0x80u | ((static_cast<unsigned int>(wc) >> 12u) & 0x3Fu));
+                utf8_bytes[2] = static_cast<std::char_traits<char>::int_type>(0x80u | ((static_cast<unsigned int>(wc) >> 6u) & 0x3Fu));
+                utf8_bytes[3] = static_cast<std::char_traits<char>::int_type>(0x80u | (static_cast<unsigned int>(wc) & 0x3Fu));
+                utf8_bytes_filled = 4;
+            }
+            else
+            {
+                // unknown character
+                utf8_bytes[0] = static_cast<std::char_traits<char>::int_type>(wc);
+                utf8_bytes_filled = 1;
+            }
+        }
+    }
+};
+
+template<typename BaseInputAdapter>
+struct wide_string_input_helper<BaseInputAdapter, 2>
+{
+    // UTF-16
+    static void fill_buffer(BaseInputAdapter& input,
+                            std::array<std::char_traits<char>::int_type, 4>& utf8_bytes,
+                            size_t& utf8_bytes_index,
+                            size_t& utf8_bytes_filled)
+    {
+        utf8_bytes_index = 0;
+
+        if (JSON_HEDLEY_UNLIKELY(input.empty()))
+        {
+            utf8_bytes[0] = std::char_traits<char>::eof();
+            utf8_bytes_filled = 1;
+        }
+        else
+        {
+            // get the current character
+            const auto wc = input.get_character();
+
+            // UTF-16 to UTF-8 encoding
+            if (wc < 0x80)
+            {
+                utf8_bytes[0] = static_cast<std::char_traits<char>::int_type>(wc);
+                utf8_bytes_filled = 1;
+            }
+            else if (wc <= 0x7FF)
+            {
+                utf8_bytes[0] = static_cast<std::char_traits<char>::int_type>(0xC0u | ((static_cast<unsigned int>(wc) >> 6u)));
+                utf8_bytes[1] = static_cast<std::char_traits<char>::int_type>(0x80u | (static_cast<unsigned int>(wc) & 0x3Fu));
+                utf8_bytes_filled = 2;
+            }
+            else if (0xD800 > wc || wc >= 0xE000)
+            {
+                utf8_bytes[0] = static_cast<std::char_traits<char>::int_type>(0xE0u | ((static_cast<unsigned int>(wc) >> 12u)));
+                utf8_bytes[1] = static_cast<std::char_traits<char>::int_type>(0x80u | ((static_cast<unsigned int>(wc) >> 6u) & 0x3Fu));
+                utf8_bytes[2] = static_cast<std::char_traits<char>::int_type>(0x80u | (static_cast<unsigned int>(wc) & 0x3Fu));
+                utf8_bytes_filled = 3;
+            }
+            else
+            {
+                if (JSON_HEDLEY_UNLIKELY(!input.empty()))
+                {
+                    const auto wc2 = static_cast<unsigned int>(input.get_character());
+                    const auto charcode = 0x10000u + (((static_cast<unsigned int>(wc) & 0x3FFu) << 10u) | (wc2 & 0x3FFu));
+                    utf8_bytes[0] = static_cast<std::char_traits<char>::int_type>(0xF0u | (charcode >> 18u));
+                    utf8_bytes[1] = static_cast<std::char_traits<char>::int_type>(0x80u | ((charcode >> 12u) & 0x3Fu));
+                    utf8_bytes[2] = static_cast<std::char_traits<char>::int_type>(0x80u | ((charcode >> 6u) & 0x3Fu));
+                    utf8_bytes[3] = static_cast<std::char_traits<char>::int_type>(0x80u | (charcode & 0x3Fu));
+                    utf8_bytes_filled = 4;
+                }
+                else
+                {
+                    utf8_bytes[0] = static_cast<std::char_traits<char>::int_type>(wc);
+                    utf8_bytes_filled = 1;
+                }
+            }
+        }
+    }
+};
+
+// Wraps another input apdater to convert wide character types into individual bytes.
+template<typename BaseInputAdapter, typename WideCharType>
+class wide_string_input_adapter
+{
+  public:
+    using char_type = char;
+
+    wide_string_input_adapter(BaseInputAdapter base)
+        : base_adapter(base) {}
+
+    typename std::char_traits<char>::int_type get_character() noexcept
+    {
+        // check if buffer needs to be filled
+        if (utf8_bytes_index == utf8_bytes_filled)
+        {
+            fill_buffer<sizeof(WideCharType)>();
+
+            JSON_ASSERT(utf8_bytes_filled > 0);
+            JSON_ASSERT(utf8_bytes_index == 0);
+        }
+
+        // use buffer
+        JSON_ASSERT(utf8_bytes_filled > 0);
+        JSON_ASSERT(utf8_bytes_index < utf8_bytes_filled);
+        return utf8_bytes[utf8_bytes_index++];
+    }
+
+  private:
+    BaseInputAdapter base_adapter;
+
+    template<size_t T>
+    void fill_buffer()
+    {
+        wide_string_input_helper<BaseInputAdapter, T>::fill_buffer(base_adapter, utf8_bytes, utf8_bytes_index, utf8_bytes_filled);
+    }
+
+    /// a buffer for UTF-8 bytes
+    std::array<std::char_traits<char>::int_type, 4> utf8_bytes = {{0, 0, 0, 0}};
+
+    /// index to the utf8_codes array for the next valid byte
+    std::size_t utf8_bytes_index = 0;
+    /// number of valid bytes in the utf8_codes array
+    std::size_t utf8_bytes_filled = 0;
+};
+
+
+template<typename IteratorType, typename Enable = void>
+struct iterator_input_adapter_factory
+{
+    using iterator_type = IteratorType;
+    using char_type = typename std::iterator_traits<iterator_type>::value_type;
+    using adapter_type = iterator_input_adapter<iterator_type>;
+
+    static adapter_type create(IteratorType first, IteratorType last)
+    {
+        return adapter_type(std::move(first), std::move(last));
+    }
+};
+
+template<typename T>
+struct is_iterator_of_multibyte
+{
+    using value_type = typename std::iterator_traits<T>::value_type;
+    enum
+    {
+        value = sizeof(value_type) > 1
+    };
+};
+
+template<typename IteratorType>
+struct iterator_input_adapter_factory<IteratorType, enable_if_t<is_iterator_of_multibyte<IteratorType>::value>>
+{
+    using iterator_type = IteratorType;
+    using char_type = typename std::iterator_traits<iterator_type>::value_type;
+    using base_adapter_type = iterator_input_adapter<iterator_type>;
+    using adapter_type = wide_string_input_adapter<base_adapter_type, char_type>;
+
+    static adapter_type create(IteratorType first, IteratorType last)
+    {
+        return adapter_type(base_adapter_type(std::move(first), std::move(last)));
+    }
+};
+
+// General purpose iterator-based input
+template<typename IteratorType>
+typename iterator_input_adapter_factory<IteratorType>::adapter_type input_adapter(IteratorType first, IteratorType last)
+{
+    using factory_type = iterator_input_adapter_factory<IteratorType>;
+    return factory_type::create(first, last);
+}
+
+// Convenience shorthand from container to iterator
+// Enables ADL on begin(container) and end(container)
+// Encloses the using declarations in namespace for not to leak them to outside scope
+
+namespace container_input_adapter_factory_impl
+{
+
+using std::begin;
+using std::end;
+
+template<typename ContainerType, typename Enable = void>
+struct container_input_adapter_factory {};
+
+template<typename ContainerType>
+struct container_input_adapter_factory< ContainerType,
+       void_t<decltype(begin(std::declval<ContainerType>()), end(std::declval<ContainerType>()))>>
+       {
+           using adapter_type = decltype(input_adapter(begin(std::declval<ContainerType>()), end(std::declval<ContainerType>())));
+
+           static adapter_type create(const ContainerType& container)
+{
+    return input_adapter(begin(container), end(container));
+}
+       };
+
+}  // namespace container_input_adapter_factory_impl
+
+template<typename ContainerType>
+typename container_input_adapter_factory_impl::container_input_adapter_factory<ContainerType>::adapter_type input_adapter(const ContainerType& container)
+{
+    return container_input_adapter_factory_impl::container_input_adapter_factory<ContainerType>::create(container);
+}
+
+#ifndef JSON_NO_IO
+// Special cases with fast paths
+inline file_input_adapter input_adapter(std::FILE* file)
+{
+    return file_input_adapter(file);
+}
+
+inline input_stream_adapter input_adapter(std::istream& stream)
+{
+    return input_stream_adapter(stream);
+}
+
+inline input_stream_adapter input_adapter(std::istream&& stream)
+{
+    return input_stream_adapter(stream);
+}
+#endif  // JSON_NO_IO
+
+using contiguous_bytes_input_adapter = decltype(input_adapter(std::declval<const char*>(), std::declval<const char*>()));
+
+// Null-delimited strings, and the like.
+template < typename CharT,
+           typename std::enable_if <
+               std::is_pointer<CharT>::value&&
+               !std::is_array<CharT>::value&&
+               std::is_integral<typename std::remove_pointer<CharT>::type>::value&&
+               sizeof(typename std::remove_pointer<CharT>::type) == 1,
+               int >::type = 0 >
+contiguous_bytes_input_adapter input_adapter(CharT b)
+{
+    auto length = std::strlen(reinterpret_cast<const char*>(b));
+    const auto* ptr = reinterpret_cast<const char*>(b);
+    return input_adapter(ptr, ptr + length);
+}
+
+template<typename T, std::size_t N>
+auto input_adapter(T (&array)[N]) -> decltype(input_adapter(array, array + N)) // NOLINT(cppcoreguidelines-avoid-c-arrays,hicpp-avoid-c-arrays,modernize-avoid-c-arrays)
+{
+    return input_adapter(array, array + N);
+}
+
+// This class only handles inputs of input_buffer_adapter type.
+// It's required so that expressions like {ptr, len} can be implicitly cast
+// to the correct adapter.
+class span_input_adapter
+{
+  public:
+    template < typename CharT,
+               typename std::enable_if <
+                   std::is_pointer<CharT>::value&&
+                   std::is_integral<typename std::remove_pointer<CharT>::type>::value&&
+                   sizeof(typename std::remove_pointer<CharT>::type) == 1,
+                   int >::type = 0 >
+    span_input_adapter(CharT b, std::size_t l)
+        : ia(reinterpret_cast<const char*>(b), reinterpret_cast<const char*>(b) + l) {}
+
+    template<class IteratorType,
+             typename std::enable_if<
+                 std::is_same<typename iterator_traits<IteratorType>::iterator_category, std::random_access_iterator_tag>::value,
+                 int>::type = 0>
+    span_input_adapter(IteratorType first, IteratorType last)
+        : ia(input_adapter(first, last)) {}
+
+    contiguous_bytes_input_adapter&& get()
+    {
+        return std::move(ia); // NOLINT(hicpp-move-const-arg,performance-move-const-arg)
+    }
+
+  private:
+    contiguous_bytes_input_adapter ia;
+};
+
+}  // namespace detail
+NLOHMANN_JSON_NAMESPACE_END
+
+// #include <nlohmann/detail/input/json_sax.hpp>
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.2
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013-2022 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+
+
+#include <cstddef>
+#include <string> // string
+#include <utility> // move
+#include <vector> // vector
+
+// #include <nlohmann/detail/exceptions.hpp>
+
+// #include <nlohmann/detail/macro_scope.hpp>
+
+// #include <nlohmann/detail/string_concat.hpp>
+
+
+NLOHMANN_JSON_NAMESPACE_BEGIN
+
+/*!
+@brief SAX interface
+
+This class describes the SAX interface used by @ref nlohmann::json::sax_parse.
+Each function is called in different situations while the input is parsed. The
+boolean return value informs the parser whether to continue processing the
+input.
+*/
+template<typename BasicJsonType>
+struct json_sax
+{
+    using number_integer_t = typename BasicJsonType::number_integer_t;
+    using number_unsigned_t = typename BasicJsonType::number_unsigned_t;
+    using number_float_t = typename BasicJsonType::number_float_t;
+    using string_t = typename BasicJsonType::string_t;
+    using binary_t = typename BasicJsonType::binary_t;
+
+    /*!
+    @brief a null value was read
+    @return whether parsing should proceed
+    */
+    virtual bool null() = 0;
+
+    /*!
+    @brief a boolean value was read
+    @param[in] val  boolean value
+    @return whether parsing should proceed
+    */
+    virtual bool boolean(bool val) = 0;
+
+    /*!
+    @brief an integer number was read
+    @param[in] val  integer value
+    @return whether parsing should proceed
+    */
+    virtual bool number_integer(number_integer_t val) = 0;
+
+    /*!
+    @brief an unsigned integer number was read
+    @param[in] val  unsigned integer value
+    @return whether parsing should proceed
+    */
+    virtual bool number_unsigned(number_unsigned_t val) = 0;
+
+    /*!
+    @brief a floating-point number was read
+    @param[in] val  floating-point value
+    @param[in] s    raw token value
+    @return whether parsing should proceed
+    */
+    virtual bool number_float(number_float_t val, const string_t& s) = 0;
+
+    /*!
+    @brief a string value was read
+    @param[in] val  string value
+    @return whether parsing should proceed
+    @note It is safe to move the passed string value.
+    */
+    virtual bool string(string_t& val) = 0;
+
+    /*!
+    @brief a binary value was read
+    @param[in] val  binary value
+    @return whether parsing should proceed
+    @note It is safe to move the passed binary value.
+    */
+    virtual bool binary(binary_t& val) = 0;
+
+    /*!
+    @brief the beginning of an object was read
+    @param[in] elements  number of object elements or -1 if unknown
+    @return whether parsing should proceed
+    @note binary formats may report the number of elements
+    */
+    virtual bool start_object(std::size_t elements) = 0;
+
+    /*!
+    @brief an object key was read
+    @param[in] val  object key
+    @return whether parsing should proceed
+    @note It is safe to move the passed string.
+    */
+    virtual bool key(string_t& val) = 0;
+
+    /*!
+    @brief the end of an object was read
+    @return whether parsing should proceed
+    */
+    virtual bool end_object() = 0;
+
+    /*!
+    @brief the beginning of an array was read
+    @param[in] elements  number of array elements or -1 if unknown
+    @return whether parsing should proceed
+    @note binary formats may report the number of elements
+    */
+    virtual bool start_array(std::size_t elements) = 0;
+
+    /*!
+    @brief the end of an array was read
+    @return whether parsing should proceed
+    */
+    virtual bool end_array() = 0;
+
+    /*!
+    @brief a parse error occurred
+    @param[in] position    the position in the input where the error occurs
+    @param[in] last_token  the last read token
+    @param[in] ex          an exception object describing the error
+    @return whether parsing should proceed (must return false)
+    */
+    virtual bool parse_error(std::size_t position,
+                             const std::string& last_token,
+                             const detail::exception& ex) = 0;
+
+    json_sax() = default;
+    json_sax(const json_sax&) = default;
+    json_sax(json_sax&&) noexcept = default;
+    json_sax& operator=(const json_sax&) = default;
+    json_sax& operator=(json_sax&&) noexcept = default;
+    virtual ~json_sax() = default;
+};
+
+
+namespace detail
+{
+/*!
+@brief SAX implementation to create a JSON value from SAX events
+
+This class implements the @ref json_sax interface and processes the SAX events
+to create a JSON value which makes it basically a DOM parser. The structure or
+hierarchy of the JSON value is managed by the stack `ref_stack` which contains
+a pointer to the respective array or object for each recursion depth.
+
+After successful parsing, the value that is passed by reference to the
+constructor contains the parsed value.
+
+@tparam BasicJsonType  the JSON type
+*/
+template<typename BasicJsonType>
+class json_sax_dom_parser
+{
+  public:
+    using number_integer_t = typename BasicJsonType::number_integer_t;
+    using number_unsigned_t = typename BasicJsonType::number_unsigned_t;
+    using number_float_t = typename BasicJsonType::number_float_t;
+    using string_t = typename BasicJsonType::string_t;
+    using binary_t = typename BasicJsonType::binary_t;
+
+    /*!
+    @param[in,out] r  reference to a JSON value that is manipulated while
+                       parsing
+    @param[in] allow_exceptions_  whether parse errors yield exceptions
+    */
+    explicit json_sax_dom_parser(BasicJsonType& r, const bool allow_exceptions_ = true)
+        : root(r), allow_exceptions(allow_exceptions_)
+    {}
+
+    // make class move-only
+    json_sax_dom_parser(const json_sax_dom_parser&) = delete;
+    json_sax_dom_parser(json_sax_dom_parser&&) = default; // NOLINT(hicpp-noexcept-move,performance-noexcept-move-constructor)
+    json_sax_dom_parser& operator=(const json_sax_dom_parser&) = delete;
+    json_sax_dom_parser& operator=(json_sax_dom_parser&&) = default; // NOLINT(hicpp-noexcept-move,performance-noexcept-move-constructor)
+    ~json_sax_dom_parser() = default;
+
+    bool null()
+    {
+        handle_value(nullptr);
+        return true;
+    }
+
+    bool boolean(bool val)
+    {
+        handle_value(val);
+        return true;
+    }
+
+    bool number_integer(number_integer_t val)
+    {
+        handle_value(val);
+        return true;
+    }
+
+    bool number_unsigned(number_unsigned_t val)
+    {
+        handle_value(val);
+        return true;
+    }
+
+    bool number_float(number_float_t val, const string_t& /*unused*/)
+    {
+        handle_value(val);
+        return true;
+    }
+
+    bool string(string_t& val)
+    {
+        handle_value(val);
+        return true;
+    }
+
+    bool binary(binary_t& val)
+    {
+        handle_value(std::move(val));
+        return true;
+    }
+
+    bool start_object(std::size_t len)
+    {
+        ref_stack.push_back(handle_value(BasicJsonType::value_t::object));
+
+        if (JSON_HEDLEY_UNLIKELY(len != static_cast<std::size_t>(-1) && len > ref_stack.back()->max_size()))
+        {
+            JSON_THROW(out_of_range::create(408, concat("excessive object size: ", std::to_string(len)), ref_stack.back()));
+        }
+
+        return true;
+    }
+
+    bool key(string_t& val)
+    {
+        JSON_ASSERT(!ref_stack.empty());
+        JSON_ASSERT(ref_stack.back()->is_object());
+
+        // add null at given key and store the reference for later
+        object_element = &(ref_stack.back()->m_data.m_value.object->operator[](val));
+        return true;
+    }
+
+    bool end_object()
+    {
+        JSON_ASSERT(!ref_stack.empty());
+        JSON_ASSERT(ref_stack.back()->is_object());
+
+        ref_stack.back()->set_parents();
+        ref_stack.pop_back();
+        return true;
+    }
+
+    bool start_array(std::size_t len)
+    {
+        ref_stack.push_back(handle_value(BasicJsonType::value_t::array));
+
+        if (JSON_HEDLEY_UNLIKELY(len != static_cast<std::size_t>(-1) && len > ref_stack.back()->max_size()))
+        {
+            JSON_THROW(out_of_range::create(408, concat("excessive array size: ", std::to_string(len)), ref_stack.back()));
+        }
+
+        return true;
+    }
+
+    bool end_array()
+    {
+        JSON_ASSERT(!ref_stack.empty());
+        JSON_ASSERT(ref_stack.back()->is_array());
+
+        ref_stack.back()->set_parents();
+        ref_stack.pop_back();
+        return true;
+    }
+
+    template<class Exception>
+    bool parse_error(std::size_t /*unused*/, const std::string& /*unused*/,
+                     const Exception& ex)
+    {
+        errored = true;
+        static_cast<void>(ex);
+        if (allow_exceptions)
+        {
+            JSON_THROW(ex);
+        }
+        return false;
+    }
+
+    constexpr bool is_errored() const
+    {
+        return errored;
+    }
+
+  private:
+    /*!
+    @invariant If the ref stack is empty, then the passed value will be the new
+               root.
+    @invariant If the ref stack contains a value, then it is an array or an
+               object to which we can add elements
+    */
+    template<typename Value>
+    JSON_HEDLEY_RETURNS_NON_NULL
+    BasicJsonType* handle_value(Value&& v)
+    {
+        if (ref_stack.empty())
+        {
+            root = BasicJsonType(std::forward<Value>(v));
+            return &root;
+        }
+
+        JSON_ASSERT(ref_stack.back()->is_array() || ref_stack.back()->is_object());
+
+        if (ref_stack.back()->is_array())
+        {
+            ref_stack.back()->m_data.m_value.array->emplace_back(std::forward<Value>(v));
+            return &(ref_stack.back()->m_data.m_value.array->back());
+        }
+
+        JSON_ASSERT(ref_stack.back()->is_object());
+        JSON_ASSERT(object_element);
+        *object_element = BasicJsonType(std::forward<Value>(v));
+        return object_element;
+    }
+
+    /// the parsed JSON value
+    BasicJsonType& root;
+    /// stack to model hierarchy of values
+    std::vector<BasicJsonType*> ref_stack {};
+    /// helper to hold the reference for the next object element
+    BasicJsonType* object_element = nullptr;
+    /// whether a syntax error occurred
+    bool errored = false;
+    /// whether to throw exceptions in case of errors
+    const bool allow_exceptions = true;
+};
+
+template<typename BasicJsonType>
+class json_sax_dom_callback_parser
+{
+  public:
+    using number_integer_t = typename BasicJsonType::number_integer_t;
+    using number_unsigned_t = typename BasicJsonType::number_unsigned_t;
+    using number_float_t = typename BasicJsonType::number_float_t;
+    using string_t = typename BasicJsonType::string_t;
+    using binary_t = typename BasicJsonType::binary_t;
+    using parser_callback_t = typename BasicJsonType::parser_callback_t;
+    using parse_event_t = typename BasicJsonType::parse_event_t;
+
+    json_sax_dom_callback_parser(BasicJsonType& r,
+                                 const parser_callback_t cb,
+                                 const bool allow_exceptions_ = true)
+        : root(r), callback(cb), allow_exceptions(allow_exceptions_)
+    {
+        keep_stack.push_back(true);
+    }
+
+    // make class move-only
+    json_sax_dom_callback_parser(const json_sax_dom_callback_parser&) = delete;
+    json_sax_dom_callback_parser(json_sax_dom_callback_parser&&) = default; // NOLINT(hicpp-noexcept-move,performance-noexcept-move-constructor)
+    json_sax_dom_callback_parser& operator=(const json_sax_dom_callback_parser&) = delete;
+    json_sax_dom_callback_parser& operator=(json_sax_dom_callback_parser&&) = default; // NOLINT(hicpp-noexcept-move,performance-noexcept-move-constructor)
+    ~json_sax_dom_callback_parser() = default;
+
+    bool null()
+    {
+        handle_value(nullptr);
+        return true;
+    }
+
+    bool boolean(bool val)
+    {
+        handle_value(val);
+        return true;
+    }
+
+    bool number_integer(number_integer_t val)
+    {
+        handle_value(val);
+        return true;
+    }
+
+    bool number_unsigned(number_unsigned_t val)
+    {
+        handle_value(val);
+        return true;
+    }
+
+    bool number_float(number_float_t val, const string_t& /*unused*/)
+    {
+        handle_value(val);
+        return true;
+    }
+
+    bool string(string_t& val)
+    {
+        handle_value(val);
+        return true;
+    }
+
+    bool binary(binary_t& val)
+    {
+        handle_value(std::move(val));
+        return true;
+    }
+
+    bool start_object(std::size_t len)
+    {
+        // check callback for object start
+        const bool keep = callback(static_cast<int>(ref_stack.size()), parse_event_t::object_start, discarded);
+        keep_stack.push_back(keep);
+
+        auto val = handle_value(BasicJsonType::value_t::object, true);
+        ref_stack.push_back(val.second);
+
+        // check object limit
+        if (ref_stack.back() && JSON_HEDLEY_UNLIKELY(len != static_cast<std::size_t>(-1) && len > ref_stack.back()->max_size()))
+        {
+            JSON_THROW(out_of_range::create(408, concat("excessive object size: ", std::to_string(len)), ref_stack.back()));
+        }
+
+        return true;
+    }
+
+    bool key(string_t& val)
+    {
+        BasicJsonType k = BasicJsonType(val);
+
+        // check callback for key
+        const bool keep = callback(static_cast<int>(ref_stack.size()), parse_event_t::key, k);
+        key_keep_stack.push_back(keep);
+
+        // add discarded value at given key and store the reference for later
+        if (keep && ref_stack.back())
+        {
+            object_element = &(ref_stack.back()->m_data.m_value.object->operator[](val) = discarded);
+        }
+
+        return true;
+    }
+
+    bool end_object()
+    {
+        if (ref_stack.back())
+        {
+            if (!callback(static_cast<int>(ref_stack.size()) - 1, parse_event_t::object_end, *ref_stack.back()))
+            {
+                // discard object
+                *ref_stack.back() = discarded;
+            }
+            else
+            {
+                ref_stack.back()->set_parents();
+            }
+        }
+
+        JSON_ASSERT(!ref_stack.empty());
+        JSON_ASSERT(!keep_stack.empty());
+        ref_stack.pop_back();
+        keep_stack.pop_back();
+
+        if (!ref_stack.empty() && ref_stack.back() && ref_stack.back()->is_structured())
+        {
+            // remove discarded value
+            for (auto it = ref_stack.back()->begin(); it != ref_stack.back()->end(); ++it)
+            {
+                if (it->is_discarded())
+                {
+                    ref_stack.back()->erase(it);
+                    break;
+                }
+            }
+        }
+
+        return true;
+    }
+
+    bool start_array(std::size_t len)
+    {
+        const bool keep = callback(static_cast<int>(ref_stack.size()), parse_event_t::array_start, discarded);
+        keep_stack.push_back(keep);
+
+        auto val = handle_value(BasicJsonType::value_t::array, true);
+        ref_stack.push_back(val.second);
+
+        // check array limit
+        if (ref_stack.back() && JSON_HEDLEY_UNLIKELY(len != static_cast<std::size_t>(-1) && len > ref_stack.back()->max_size()))
+        {
+            JSON_THROW(out_of_range::create(408, concat("excessive array size: ", std::to_string(len)), ref_stack.back()));
+        }
+
+        return true;
+    }
+
+    bool end_array()
+    {
+        bool keep = true;
+
+        if (ref_stack.back())
+        {
+            keep = callback(static_cast<int>(ref_stack.size()) - 1, parse_event_t::array_end, *ref_stack.back());
+            if (keep)
+            {
+                ref_stack.back()->set_parents();
+            }
+            else
+            {
+                // discard array
+                *ref_stack.back() = discarded;
+            }
+        }
+
+        JSON_ASSERT(!ref_stack.empty());
+        JSON_ASSERT(!keep_stack.empty());
+        ref_stack.pop_back();
+        keep_stack.pop_back();
+
+        // remove discarded value
+        if (!keep && !ref_stack.empty() && ref_stack.back()->is_array())
+        {
+            ref_stack.back()->m_data.m_value.array->pop_back();
+        }
+
+        return true;
+    }
+
+    template<class Exception>
+    bool parse_error(std::size_t /*unused*/, const std::string& /*unused*/,
+                     const Exception& ex)
+    {
+        errored = true;
+        static_cast<void>(ex);
+        if (allow_exceptions)
+        {
+            JSON_THROW(ex);
+        }
+        return false;
+    }
+
+    constexpr bool is_errored() const
+    {
+        return errored;
+    }
+
+  private:
+    /*!
+    @param[in] v  value to add to the JSON value we build during parsing
+    @param[in] skip_callback  whether we should skip calling the callback
+               function; this is required after start_array() and
+               start_object() SAX events, because otherwise we would call the
+               callback function with an empty array or object, respectively.
+
+    @invariant If the ref stack is empty, then the passed value will be the new
+               root.
+    @invariant If the ref stack contains a value, then it is an array or an
+               object to which we can add elements
+
+    @return pair of boolean (whether value should be kept) and pointer (to the
+            passed value in the ref_stack hierarchy; nullptr if not kept)
+    */
+    template<typename Value>
+    std::pair<bool, BasicJsonType*> handle_value(Value&& v, const bool skip_callback = false)
+    {
+        JSON_ASSERT(!keep_stack.empty());
+
+        // do not handle this value if we know it would be added to a discarded
+        // container
+        if (!keep_stack.back())
+        {
+            return {false, nullptr};
+        }
+
+        // create value
+        auto value = BasicJsonType(std::forward<Value>(v));
+
+        // check callback
+        const bool keep = skip_callback || callback(static_cast<int>(ref_stack.size()), parse_event_t::value, value);
+
+        // do not handle this value if we just learnt it shall be discarded
+        if (!keep)
+        {
+            return {false, nullptr};
+        }
+
+        if (ref_stack.empty())
+        {
+            root = std::move(value);
+            return {true, &root};
+        }
+
+        // skip this value if we already decided to skip the parent
+        // (https://github.com/nlohmann/json/issues/971#issuecomment-413678360)
+        if (!ref_stack.back())
+        {
+            return {false, nullptr};
+        }
+
+        // we now only expect arrays and objects
+        JSON_ASSERT(ref_stack.back()->is_array() || ref_stack.back()->is_object());
+
+        // array
+        if (ref_stack.back()->is_array())
+        {
+            ref_stack.back()->m_data.m_value.array->emplace_back(std::move(value));
+            return {true, &(ref_stack.back()->m_data.m_value.array->back())};
+        }
+
+        // object
+        JSON_ASSERT(ref_stack.back()->is_object());
+        // check if we should store an element for the current key
+        JSON_ASSERT(!key_keep_stack.empty());
+        const bool store_element = key_keep_stack.back();
+        key_keep_stack.pop_back();
+
+        if (!store_element)
+        {
+            return {false, nullptr};
+        }
+
+        JSON_ASSERT(object_element);
+        *object_element = std::move(value);
+        return {true, object_element};
+    }
+
+    /// the parsed JSON value
+    BasicJsonType& root;
+    /// stack to model hierarchy of values
+    std::vector<BasicJsonType*> ref_stack {};
+    /// stack to manage which values to keep
+    std::vector<bool> keep_stack {};
+    /// stack to manage which object keys to keep
+    std::vector<bool> key_keep_stack {};
+    /// helper to hold the reference for the next object element
+    BasicJsonType* object_element = nullptr;
+    /// whether a syntax error occurred
+    bool errored = false;
+    /// callback function
+    const parser_callback_t callback = nullptr;
+    /// whether to throw exceptions in case of errors
+    const bool allow_exceptions = true;
+    /// a discarded value for the callback
+    BasicJsonType discarded = BasicJsonType::value_t::discarded;
+};
+
+template<typename BasicJsonType>
+class json_sax_acceptor
+{
+  public:
+    using number_integer_t = typename BasicJsonType::number_integer_t;
+    using number_unsigned_t = typename BasicJsonType::number_unsigned_t;
+    using number_float_t = typename BasicJsonType::number_float_t;
+    using string_t = typename BasicJsonType::string_t;
+    using binary_t = typename BasicJsonType::binary_t;
+
+    bool null()
+    {
+        return true;
+    }
+
+    bool boolean(bool /*unused*/)
+    {
+        return true;
+    }
+
+    bool number_integer(number_integer_t /*unused*/)
+    {
+        return true;
+    }
+
+    bool number_unsigned(number_unsigned_t /*unused*/)
+    {
+        return true;
+    }
+
+    bool number_float(number_float_t /*unused*/, const string_t& /*unused*/)
+    {
+        return true;
+    }
+
+    bool string(string_t& /*unused*/)
+    {
+        return true;
+    }
+
+    bool binary(binary_t& /*unused*/)
+    {
+        return true;
+    }
+
+    bool start_object(std::size_t /*unused*/ = static_cast<std::size_t>(-1))
+    {
+        return true;
+    }
+
+    bool key(string_t& /*unused*/)
+    {
+        return true;
+    }
+
+    bool end_object()
+    {
+        return true;
+    }
+
+    bool start_array(std::size_t /*unused*/ = static_cast<std::size_t>(-1))
+    {
+        return true;
+    }
+
+    bool end_array()
+    {
+        return true;
+    }
+
+    bool parse_error(std::size_t /*unused*/, const std::string& /*unused*/, const detail::exception& /*unused*/)
+    {
+        return false;
+    }
+};
+
+}  // namespace detail
+NLOHMANN_JSON_NAMESPACE_END
+
+// #include <nlohmann/detail/input/lexer.hpp>
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.2
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013-2022 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+
+
+#include <array> // array
+#include <clocale> // localeconv
+#include <cstddef> // size_t
+#include <cstdio> // snprintf
+#include <cstdlib> // strtof, strtod, strtold, strtoll, strtoull
+#include <initializer_list> // initializer_list
+#include <string> // char_traits, string
+#include <utility> // move
+#include <vector> // vector
+
+// #include <nlohmann/detail/input/input_adapters.hpp>
+
+// #include <nlohmann/detail/input/position_t.hpp>
+
+// #include <nlohmann/detail/macro_scope.hpp>
+
+
+NLOHMANN_JSON_NAMESPACE_BEGIN
+namespace detail
+{
+
+///////////
+// lexer //
+///////////
+
+template<typename BasicJsonType>
+class lexer_base
+{
+  public:
+    /// token types for the parser
+    enum class token_type
+    {
+        uninitialized,    ///< indicating the scanner is uninitialized
+        literal_true,     ///< the `true` literal
+        literal_false,    ///< the `false` literal
+        literal_null,     ///< the `null` literal
+        value_string,     ///< a string -- use get_string() for actual value
+        value_unsigned,   ///< an unsigned integer -- use get_number_unsigned() for actual value
+        value_integer,    ///< a signed integer -- use get_number_integer() for actual value
+        value_float,      ///< an floating point number -- use get_number_float() for actual value
+        begin_array,      ///< the character for array begin `[`
+        begin_object,     ///< the character for object begin `{`
+        end_array,        ///< the character for array end `]`
+        end_object,       ///< the character for object end `}`
+        name_separator,   ///< the name separator `:`
+        value_separator,  ///< the value separator `,`
+        parse_error,      ///< indicating a parse error
+        end_of_input,     ///< indicating the end of the input buffer
+        literal_or_value  ///< a literal or the begin of a value (only for diagnostics)
+    };
+
+    /// return name of values of type token_type (only used for errors)
+    JSON_HEDLEY_RETURNS_NON_NULL
+    JSON_HEDLEY_CONST
+    static const char* token_type_name(const token_type t) noexcept
+    {
+        switch (t)
+        {
+            case token_type::uninitialized:
+                return "<uninitialized>";
+            case token_type::literal_true:
+                return "true literal";
+            case token_type::literal_false:
+                return "false literal";
+            case token_type::literal_null:
+                return "null literal";
+            case token_type::value_string:
+                return "string literal";
+            case token_type::value_unsigned:
+            case token_type::value_integer:
+            case token_type::value_float:
+                return "number literal";
+            case token_type::begin_array:
+                return "'['";
+            case token_type::begin_object:
+                return "'{'";
+            case token_type::end_array:
+                return "']'";
+            case token_type::end_object:
+                return "'}'";
+            case token_type::name_separator:
+                return "':'";
+            case token_type::value_separator:
+                return "','";
+            case token_type::parse_error:
+                return "<parse error>";
+            case token_type::end_of_input:
+                return "end of input";
+            case token_type::literal_or_value:
+                return "'[', '{', or a literal";
+            // LCOV_EXCL_START
+            default: // catch non-enum values
+                return "unknown token";
+                // LCOV_EXCL_STOP
+        }
+    }
+};
+/*!
+@brief lexical analysis
+
+This class organizes the lexical analysis during JSON deserialization.
+*/
+template<typename BasicJsonType, typename InputAdapterType>
+class lexer : public lexer_base<BasicJsonType>
+{
+    using number_integer_t = typename BasicJsonType::number_integer_t;
+    using number_unsigned_t = typename BasicJsonType::number_unsigned_t;
+    using number_float_t = typename BasicJsonType::number_float_t;
+    using string_t = typename BasicJsonType::string_t;
+    using char_type = typename InputAdapterType::char_type;
+    using char_int_type = typename std::char_traits<char_type>::int_type;
+
+  public:
+    using token_type = typename lexer_base<BasicJsonType>::token_type;
+
+    explicit lexer(InputAdapterType&& adapter, bool ignore_comments_ = false) noexcept
+        : ia(std::move(adapter))
+        , ignore_comments(ignore_comments_)
+        , decimal_point_char(static_cast<char_int_type>(get_decimal_point()))
+    {}
+
+    // delete because of pointer members
+    lexer(const lexer&) = delete;
+    lexer(lexer&&) = default; // NOLINT(hicpp-noexcept-move,performance-noexcept-move-constructor)
+    lexer& operator=(lexer&) = delete;
+    lexer& operator=(lexer&&) = default; // NOLINT(hicpp-noexcept-move,performance-noexcept-move-constructor)
+    ~lexer() = default;
+
+  private:
+    /////////////////////
+    // locales
+    /////////////////////
+
+    /// return the locale-dependent decimal point
+    JSON_HEDLEY_PURE
+    static char get_decimal_point() noexcept
+    {
+        const auto* loc = localeconv();
+        JSON_ASSERT(loc != nullptr);
+        return (loc->decimal_point == nullptr) ? '.' : *(loc->decimal_point);
+    }
+
+    /////////////////////
+    // scan functions
+    /////////////////////
+
+    /*!
+    @brief get codepoint from 4 hex characters following `\u`
+
+    For input "\u c1 c2 c3 c4" the codepoint is:
+      (c1 * 0x1000) + (c2 * 0x0100) + (c3 * 0x0010) + c4
+    = (c1 << 12) + (c2 << 8) + (c3 << 4) + (c4 << 0)
+
+    Furthermore, the possible characters '0'..'9', 'A'..'F', and 'a'..'f'
+    must be converted to the integers 0x0..0x9, 0xA..0xF, 0xA..0xF, resp. The
+    conversion is done by subtracting the offset (0x30, 0x37, and 0x57)
+    between the ASCII value of the character and the desired integer value.
+
+    @return codepoint (0x0000..0xFFFF) or -1 in case of an error (e.g. EOF or
+            non-hex character)
+    */
+    int get_codepoint()
+    {
+        // this function only makes sense after reading `\u`
+        JSON_ASSERT(current == 'u');
+        int codepoint = 0;
+
+        const auto factors = { 12u, 8u, 4u, 0u };
+        for (const auto factor : factors)
+        {
+            get();
+
+            if (current >= '0' && current <= '9')
+            {
+                codepoint += static_cast<int>((static_cast<unsigned int>(current) - 0x30u) << factor);
+            }
+            else if (current >= 'A' && current <= 'F')
+            {
+                codepoint += static_cast<int>((static_cast<unsigned int>(current) - 0x37u) << factor);
+            }
+            else if (current >= 'a' && current <= 'f')
+            {
+                codepoint += static_cast<int>((static_cast<unsigned int>(current) - 0x57u) << factor);
+            }
+            else
+            {
+                return -1;
+            }
+        }
+
+        JSON_ASSERT(0x0000 <= codepoint && codepoint <= 0xFFFF);
+        return codepoint;
+    }
+
+    /*!
+    @brief check if the next byte(s) are inside a given range
+
+    Adds the current byte and, for each passed range, reads a new byte and
+    checks if it is inside the range. If a violation was detected, set up an
+    error message and return false. Otherwise, return true.
+
+    @param[in] ranges  list of integers; interpreted as list of pairs of
+                       inclusive lower and upper bound, respectively
+
+    @pre The passed list @a ranges must have 2, 4, or 6 elements; that is,
+         1, 2, or 3 pairs. This precondition is enforced by an assertion.
+
+    @return true if and only if no range violation was detected
+    */
+    bool next_byte_in_range(std::initializer_list<char_int_type> ranges)
+    {
+        JSON_ASSERT(ranges.size() == 2 || ranges.size() == 4 || ranges.size() == 6);
+        add(current);
+
+        for (auto range = ranges.begin(); range != ranges.end(); ++range)
+        {
+            get();
+            if (JSON_HEDLEY_LIKELY(*range <= current && current <= *(++range)))
+            {
+                add(current);
+            }
+            else
+            {
+                error_message = "invalid string: ill-formed UTF-8 byte";
+                return false;
+            }
+        }
+
+        return true;
+    }
+
+    /*!
+    @brief scan a string literal
+
+    This function scans a string according to Sect. 7 of RFC 8259. While
+    scanning, bytes are escaped and copied into buffer token_buffer. Then the
+    function returns successfully, token_buffer is *not* null-terminated (as it
+    may contain \0 bytes), and token_buffer.size() is the number of bytes in the
+    string.
+
+    @return token_type::value_string if string could be successfully scanned,
+            token_type::parse_error otherwise
+
+    @note In case of errors, variable error_message contains a textual
+          description.
+    */
+    token_type scan_string()
+    {
+        // reset token_buffer (ignore opening quote)
+        reset();
+
+        // we entered the function by reading an open quote
+        JSON_ASSERT(current == '\"');
+
+        while (true)
+        {
+            // get next character
+            switch (get())
+            {
+                // end of file while parsing string
+                case std::char_traits<char_type>::eof():
+                {
+                    error_message = "invalid string: missing closing quote";
+                    return token_type::parse_error;
+                }
+
+                // closing quote
+                case '\"':
+                {
+                    return token_type::value_string;
+                }
+
+                // escapes
+                case '\\':
+                {
+                    switch (get())
+                    {
+                        // quotation mark
+                        case '\"':
+                            add('\"');
+                            break;
+                        // reverse solidus
+                        case '\\':
+                            add('\\');
+                            break;
+                        // solidus
+                        case '/':
+                            add('/');
+                            break;
+                        // backspace
+                        case 'b':
+                            add('\b');
+                            break;
+                        // form feed
+                        case 'f':
+                            add('\f');
+                            break;
+                        // line feed
+                        case 'n':
+                            add('\n');
+                            break;
+                        // carriage return
+                        case 'r':
+                            add('\r');
+                            break;
+                        // tab
+                        case 't':
+                            add('\t');
+                            break;
+
+                        // unicode escapes
+                        case 'u':
+                        {
+                            const int codepoint1 = get_codepoint();
+                            int codepoint = codepoint1; // start with codepoint1
+
+                            if (JSON_HEDLEY_UNLIKELY(codepoint1 == -1))
+                            {
+                                error_message = "invalid string: '\\u' must be followed by 4 hex digits";
+                                return token_type::parse_error;
+                            }
+
+                            // check if code point is a high surrogate
+                            if (0xD800 <= codepoint1 && codepoint1 <= 0xDBFF)
+                            {
+                                // expect next \uxxxx entry
+                                if (JSON_HEDLEY_LIKELY(get() == '\\' && get() == 'u'))
+                                {
+                                    const int codepoint2 = get_codepoint();
+
+                                    if (JSON_HEDLEY_UNLIKELY(codepoint2 == -1))
+                                    {
+                                        error_message = "invalid string: '\\u' must be followed by 4 hex digits";
+                                        return token_type::parse_error;
+                                    }
+
+                                    // check if codepoint2 is a low surrogate
+                                    if (JSON_HEDLEY_LIKELY(0xDC00 <= codepoint2 && codepoint2 <= 0xDFFF))
+                                    {
+                                        // overwrite codepoint
+                                        codepoint = static_cast<int>(
+                                                        // high surrogate occupies the most significant 22 bits
+                                                        (static_cast<unsigned int>(codepoint1) << 10u)
+                                                        // low surrogate occupies the least significant 15 bits
+                                                        + static_cast<unsigned int>(codepoint2)
+                                                        // there is still the 0xD800, 0xDC00 and 0x10000 noise
+                                                        // in the result, so we have to subtract with:
+                                                        // (0xD800 << 10) + DC00 - 0x10000 = 0x35FDC00
+                                                        - 0x35FDC00u);
+                                    }
+                                    else
+                                    {
+                                        error_message = "invalid string: surrogate U+D800..U+DBFF must be followed by U+DC00..U+DFFF";
+                                        return token_type::parse_error;
+                                    }
+                                }
+                                else
+                                {
+                                    error_message = "invalid string: surrogate U+D800..U+DBFF must be followed by U+DC00..U+DFFF";
+                                    return token_type::parse_error;
+                                }
+                            }
+                            else
+                            {
+                                if (JSON_HEDLEY_UNLIKELY(0xDC00 <= codepoint1 && codepoint1 <= 0xDFFF))
+                                {
+                                    error_message = "invalid string: surrogate U+DC00..U+DFFF must follow U+D800..U+DBFF";
+                                    return token_type::parse_error;
+                                }
+                            }
+
+                            // result of the above calculation yields a proper codepoint
+                            JSON_ASSERT(0x00 <= codepoint && codepoint <= 0x10FFFF);
+
+                            // translate codepoint into bytes
+                            if (codepoint < 0x80)
+                            {
+                                // 1-byte characters: 0xxxxxxx (ASCII)
+                                add(static_cast<char_int_type>(codepoint));
+                            }
+                            else if (codepoint <= 0x7FF)
+                            {
+                                // 2-byte characters: 110xxxxx 10xxxxxx
+                                add(static_cast<char_int_type>(0xC0u | (static_cast<unsigned int>(codepoint) >> 6u)));
+                                add(static_cast<char_int_type>(0x80u | (static_cast<unsigned int>(codepoint) & 0x3Fu)));
+                            }
+                            else if (codepoint <= 0xFFFF)
+                            {
+                                // 3-byte characters: 1110xxxx 10xxxxxx 10xxxxxx
+                                add(static_cast<char_int_type>(0xE0u | (static_cast<unsigned int>(codepoint) >> 12u)));
+                                add(static_cast<char_int_type>(0x80u | ((static_cast<unsigned int>(codepoint) >> 6u) & 0x3Fu)));
+                                add(static_cast<char_int_type>(0x80u | (static_cast<unsigned int>(codepoint) & 0x3Fu)));
+                            }
+                            else
+                            {
+                                // 4-byte characters: 11110xxx 10xxxxxx 10xxxxxx 10xxxxxx
+                                add(static_cast<char_int_type>(0xF0u | (static_cast<unsigned int>(codepoint) >> 18u)));
+                                add(static_cast<char_int_type>(0x80u | ((static_cast<unsigned int>(codepoint) >> 12u) & 0x3Fu)));
+                                add(static_cast<char_int_type>(0x80u | ((static_cast<unsigned int>(codepoint) >> 6u) & 0x3Fu)));
+                                add(static_cast<char_int_type>(0x80u | (static_cast<unsigned int>(codepoint) & 0x3Fu)));
+                            }
+
+                            break;
+                        }
+
+                        // other characters after escape
+                        default:
+                            error_message = "invalid string: forbidden character after backslash";
+                            return token_type::parse_error;
+                    }
+
+                    break;
+                }
+
+                // invalid control characters
+                case 0x00:
+                {
+                    error_message = "invalid string: control character U+0000 (NUL) must be escaped to \\u0000";
+                    return token_type::parse_error;
+                }
+
+                case 0x01:
+                {
+                    error_message = "invalid string: control character U+0001 (SOH) must be escaped to \\u0001";
+                    return token_type::parse_error;
+                }
+
+                case 0x02:
+                {
+                    error_message = "invalid string: control character U+0002 (STX) must be escaped to \\u0002";
+                    return token_type::parse_error;
+                }
+
+                case 0x03:
+                {
+                    error_message = "invalid string: control character U+0003 (ETX) must be escaped to \\u0003";
+                    return token_type::parse_error;
+                }
+
+                case 0x04:
+                {
+                    error_message = "invalid string: control character U+0004 (EOT) must be escaped to \\u0004";
+                    return token_type::parse_error;
+                }
+
+                case 0x05:
+                {
+                    error_message = "invalid string: control character U+0005 (ENQ) must be escaped to \\u0005";
+                    return token_type::parse_error;
+                }
+
+                case 0x06:
+                {
+                    error_message = "invalid string: control character U+0006 (ACK) must be escaped to \\u0006";
+                    return token_type::parse_error;
+                }
+
+                case 0x07:
+                {
+                    error_message = "invalid string: control character U+0007 (BEL) must be escaped to \\u0007";
+                    return token_type::parse_error;
+                }
+
+                case 0x08:
+                {
+                    error_message = "invalid string: control character U+0008 (BS) must be escaped to \\u0008 or \\b";
+                    return token_type::parse_error;
+                }
+
+                case 0x09:
+                {
+                    error_message = "invalid string: control character U+0009 (HT) must be escaped to \\u0009 or \\t";
+                    return token_type::parse_error;
+                }
+
+                case 0x0A:
+                {
+                    error_message = "invalid string: control character U+000A (LF) must be escaped to \\u000A or \\n";
+                    return token_type::parse_error;
+                }
+
+                case 0x0B:
+                {
+                    error_message = "invalid string: control character U+000B (VT) must be escaped to \\u000B";
+                    return token_type::parse_error;
+                }
+
+                case 0x0C:
+                {
+                    error_message = "invalid string: control character U+000C (FF) must be escaped to \\u000C or \\f";
+                    return token_type::parse_error;
+                }
+
+                case 0x0D:
+                {
+                    error_message = "invalid string: control character U+000D (CR) must be escaped to \\u000D or \\r";
+                    return token_type::parse_error;
+                }
+
+                case 0x0E:
+                {
+                    error_message = "invalid string: control character U+000E (SO) must be escaped to \\u000E";
+                    return token_type::parse_error;
+                }
+
+                case 0x0F:
+                {
+                    error_message = "invalid string: control character U+000F (SI) must be escaped to \\u000F";
+                    return token_type::parse_error;
+                }
+
+                case 0x10:
+                {
+                    error_message = "invalid string: control character U+0010 (DLE) must be escaped to \\u0010";
+                    return token_type::parse_error;
+                }
+
+                case 0x11:
+                {
+                    error_message = "invalid string: control character U+0011 (DC1) must be escaped to \\u0011";
+                    return token_type::parse_error;
+                }
+
+                case 0x12:
+                {
+                    error_message = "invalid string: control character U+0012 (DC2) must be escaped to \\u0012";
+                    return token_type::parse_error;
+                }
+
+                case 0x13:
+                {
+                    error_message = "invalid string: control character U+0013 (DC3) must be escaped to \\u0013";
+                    return token_type::parse_error;
+                }
+
+                case 0x14:
+                {
+                    error_message = "invalid string: control character U+0014 (DC4) must be escaped to \\u0014";
+                    return token_type::parse_error;
+                }
+
+                case 0x15:
+                {
+                    error_message = "invalid string: control character U+0015 (NAK) must be escaped to \\u0015";
+                    return token_type::parse_error;
+                }
+
+                case 0x16:
+                {
+                    error_message = "invalid string: control character U+0016 (SYN) must be escaped to \\u0016";
+                    return token_type::parse_error;
+                }
+
+                case 0x17:
+                {
+                    error_message = "invalid string: control character U+0017 (ETB) must be escaped to \\u0017";
+                    return token_type::parse_error;
+                }
+
+                case 0x18:
+                {
+                    error_message = "invalid string: control character U+0018 (CAN) must be escaped to \\u0018";
+                    return token_type::parse_error;
+                }
+
+                case 0x19:
+                {
+                    error_message = "invalid string: control character U+0019 (EM) must be escaped to \\u0019";
+                    return token_type::parse_error;
+                }
+
+                case 0x1A:
+                {
+                    error_message = "invalid string: control character U+001A (SUB) must be escaped to \\u001A";
+                    return token_type::parse_error;
+                }
+
+                case 0x1B:
+                {
+                    error_message = "invalid string: control character U+001B (ESC) must be escaped to \\u001B";
+                    return token_type::parse_error;
+                }
+
+                case 0x1C:
+                {
+                    error_message = "invalid string: control character U+001C (FS) must be escaped to \\u001C";
+                    return token_type::parse_error;
+                }
+
+                case 0x1D:
+                {
+                    error_message = "invalid string: control character U+001D (GS) must be escaped to \\u001D";
+                    return token_type::parse_error;
+                }
+
+                case 0x1E:
+                {
+                    error_message = "invalid string: control character U+001E (RS) must be escaped to \\u001E";
+                    return token_type::parse_error;
+                }
+
+                case 0x1F:
+                {
+                    error_message = "invalid string: control character U+001F (US) must be escaped to \\u001F";
+                    return token_type::parse_error;
+                }
+
+                // U+0020..U+007F (except U+0022 (quote) and U+005C (backspace))
+                case 0x20:
+                case 0x21:
+                case 0x23:
+                case 0x24:
+                case 0x25:
+                case 0x26:
+                case 0x27:
+                case 0x28:
+                case 0x29:
+                case 0x2A:
+                case 0x2B:
+                case 0x2C:
+                case 0x2D:
+                case 0x2E:
+                case 0x2F:
+                case 0x30:
+                case 0x31:
+                case 0x32:
+                case 0x33:
+                case 0x34:
+                case 0x35:
+                case 0x36:
+                case 0x37:
+                case 0x38:
+                case 0x39:
+                case 0x3A:
+                case 0x3B:
+                case 0x3C:
+                case 0x3D:
+                case 0x3E:
+                case 0x3F:
+                case 0x40:
+                case 0x41:
+                case 0x42:
+                case 0x43:
+                case 0x44:
+                case 0x45:
+                case 0x46:
+                case 0x47:
+                case 0x48:
+                case 0x49:
+                case 0x4A:
+                case 0x4B:
+                case 0x4C:
+                case 0x4D:
+                case 0x4E:
+                case 0x4F:
+                case 0x50:
+                case 0x51:
+                case 0x52:
+                case 0x53:
+                case 0x54:
+                case 0x55:
+                case 0x56:
+                case 0x57:
+                case 0x58:
+                case 0x59:
+                case 0x5A:
+                case 0x5B:
+                case 0x5D:
+                case 0x5E:
+                case 0x5F:
+                case 0x60:
+                case 0x61:
+                case 0x62:
+                case 0x63:
+                case 0x64:
+                case 0x65:
+                case 0x66:
+                case 0x67:
+                case 0x68:
+                case 0x69:
+                case 0x6A:
+                case 0x6B:
+                case 0x6C:
+                case 0x6D:
+                case 0x6E:
+                case 0x6F:
+                case 0x70:
+                case 0x71:
+                case 0x72:
+                case 0x73:
+                case 0x74:
+                case 0x75:
+                case 0x76:
+                case 0x77:
+                case 0x78:
+                case 0x79:
+                case 0x7A:
+                case 0x7B:
+                case 0x7C:
+                case 0x7D:
+                case 0x7E:
+                case 0x7F:
+                {
+                    add(current);
+                    break;
+                }
+
+                // U+0080..U+07FF: bytes C2..DF 80..BF
+                case 0xC2:
+                case 0xC3:
+                case 0xC4:
+                case 0xC5:
+                case 0xC6:
+                case 0xC7:
+                case 0xC8:
+                case 0xC9:
+                case 0xCA:
+                case 0xCB:
+                case 0xCC:
+                case 0xCD:
+                case 0xCE:
+                case 0xCF:
+                case 0xD0:
+                case 0xD1:
+                case 0xD2:
+                case 0xD3:
+                case 0xD4:
+                case 0xD5:
+                case 0xD6:
+                case 0xD7:
+                case 0xD8:
+                case 0xD9:
+                case 0xDA:
+                case 0xDB:
+                case 0xDC:
+                case 0xDD:
+                case 0xDE:
+                case 0xDF:
+                {
+                    if (JSON_HEDLEY_UNLIKELY(!next_byte_in_range({0x80, 0xBF})))
+                    {
+                        return token_type::parse_error;
+                    }
+                    break;
+                }
+
+                // U+0800..U+0FFF: bytes E0 A0..BF 80..BF
+                case 0xE0:
+                {
+                    if (JSON_HEDLEY_UNLIKELY(!(next_byte_in_range({0xA0, 0xBF, 0x80, 0xBF}))))
+                    {
+                        return token_type::parse_error;
+                    }
+                    break;
+                }
+
+                // U+1000..U+CFFF: bytes E1..EC 80..BF 80..BF
+                // U+E000..U+FFFF: bytes EE..EF 80..BF 80..BF
+                case 0xE1:
+                case 0xE2:
+                case 0xE3:
+                case 0xE4:
+                case 0xE5:
+                case 0xE6:
+                case 0xE7:
+                case 0xE8:
+                case 0xE9:
+                case 0xEA:
+                case 0xEB:
+                case 0xEC:
+                case 0xEE:
+                case 0xEF:
+                {
+                    if (JSON_HEDLEY_UNLIKELY(!(next_byte_in_range({0x80, 0xBF, 0x80, 0xBF}))))
+                    {
+                        return token_type::parse_error;
+                    }
+                    break;
+                }
+
+                // U+D000..U+D7FF: bytes ED 80..9F 80..BF
+                case 0xED:
+                {
+                    if (JSON_HEDLEY_UNLIKELY(!(next_byte_in_range({0x80, 0x9F, 0x80, 0xBF}))))
+                    {
+                        return token_type::parse_error;
+                    }
+                    break;
+                }
+
+                // U+10000..U+3FFFF F0 90..BF 80..BF 80..BF
+                case 0xF0:
+                {
+                    if (JSON_HEDLEY_UNLIKELY(!(next_byte_in_range({0x90, 0xBF, 0x80, 0xBF, 0x80, 0xBF}))))
+                    {
+                        return token_type::parse_error;
+                    }
+                    break;
+                }
+
+                // U+40000..U+FFFFF F1..F3 80..BF 80..BF 80..BF
+                case 0xF1:
+                case 0xF2:
+                case 0xF3:
+                {
+                    if (JSON_HEDLEY_UNLIKELY(!(next_byte_in_range({0x80, 0xBF, 0x80, 0xBF, 0x80, 0xBF}))))
+                    {
+                        return token_type::parse_error;
+                    }
+                    break;
+                }
+
+                // U+100000..U+10FFFF F4 80..8F 80..BF 80..BF
+                case 0xF4:
+                {
+                    if (JSON_HEDLEY_UNLIKELY(!(next_byte_in_range({0x80, 0x8F, 0x80, 0xBF, 0x80, 0xBF}))))
+                    {
+                        return token_type::parse_error;
+                    }
+                    break;
+                }
+
+                // remaining bytes (80..C1 and F5..FF) are ill-formed
+                default:
+                {
+                    error_message = "invalid string: ill-formed UTF-8 byte";
+                    return token_type::parse_error;
+                }
+            }
+        }
+    }
+
+    /*!
+     * @brief scan a comment
+     * @return whether comment could be scanned successfully
+     */
+    bool scan_comment()
+    {
+        switch (get())
+        {
+            // single-line comments skip input until a newline or EOF is read
+            case '/':
+            {
+                while (true)
+                {
+                    switch (get())
+                    {
+                        case '\n':
+                        case '\r':
+                        case std::char_traits<char_type>::eof():
+                        case '\0':
+                            return true;
+
+                        default:
+                            break;
+                    }
+                }
+            }
+
+            // multi-line comments skip input until */ is read
+            case '*':
+            {
+                while (true)
+                {
+                    switch (get())
+                    {
+                        case std::char_traits<char_type>::eof():
+                        case '\0':
+                        {
+                            error_message = "invalid comment; missing closing '*/'";
+                            return false;
+                        }
+
+                        case '*':
+                        {
+                            switch (get())
+                            {
+                                case '/':
+                                    return true;
+
+                                default:
+                                {
+                                    unget();
+                                    continue;
+                                }
+                            }
+                        }
+
+                        default:
+                            continue;
+                    }
+                }
+            }
+
+            // unexpected character after reading '/'
+            default:
+            {
+                error_message = "invalid comment; expecting '/' or '*' after '/'";
+                return false;
+            }
+        }
+    }
+
+    JSON_HEDLEY_NON_NULL(2)
+    static void strtof(float& f, const char* str, char** endptr) noexcept
+    {
+        f = std::strtof(str, endptr);
+    }
+
+    JSON_HEDLEY_NON_NULL(2)
+    static void strtof(double& f, const char* str, char** endptr) noexcept
+    {
+        f = std::strtod(str, endptr);
+    }
+
+    JSON_HEDLEY_NON_NULL(2)
+    static void strtof(long double& f, const char* str, char** endptr) noexcept
+    {
+        f = std::strtold(str, endptr);
+    }
+
+    /*!
+    @brief scan a number literal
+
+    This function scans a string according to Sect. 6 of RFC 8259.
+
+    The function is realized with a deterministic finite state machine derived
+    from the grammar described in RFC 8259. Starting in state "init", the
+    input is read and used to determined the next state. Only state "done"
+    accepts the number. State "error" is a trap state to model errors. In the
+    table below, "anything" means any character but the ones listed before.
+
+    state    | 0        | 1-9      | e E      | +       | -       | .        | anything
+    ---------|----------|----------|----------|---------|---------|----------|-----------
+    init     | zero     | any1     | [error]  | [error] | minus   | [error]  | [error]
+    minus    | zero     | any1     | [error]  | [error] | [error] | [error]  | [error]
+    zero     | done     | done     | exponent | done    | done    | decimal1 | done
+    any1     | any1     | any1     | exponent | done    | done    | decimal1 | done
+    decimal1 | decimal2 | decimal2 | [error]  | [error] | [error] | [error]  | [error]
+    decimal2 | decimal2 | decimal2 | exponent | done    | done    | done     | done
+    exponent | any2     | any2     | [error]  | sign    | sign    | [error]  | [error]
+    sign     | any2     | any2     | [error]  | [error] | [error] | [error]  | [error]
+    any2     | any2     | any2     | done     | done    | done    | done     | done
+
+    The state machine is realized with one label per state (prefixed with
+    "scan_number_") and `goto` statements between them. The state machine
+    contains cycles, but any cycle can be left when EOF is read. Therefore,
+    the function is guaranteed to terminate.
+
+    During scanning, the read bytes are stored in token_buffer. This string is
+    then converted to a signed integer, an unsigned integer, or a
+    floating-point number.
+
+    @return token_type::value_unsigned, token_type::value_integer, or
+            token_type::value_float if number could be successfully scanned,
+            token_type::parse_error otherwise
+
+    @note The scanner is independent of the current locale. Internally, the
+          locale's decimal point is used instead of `.` to work with the
+          locale-dependent converters.
+    */
+    token_type scan_number()  // lgtm [cpp/use-of-goto]
+    {
+        // reset token_buffer to store the number's bytes
+        reset();
+
+        // the type of the parsed number; initially set to unsigned; will be
+        // changed if minus sign, decimal point or exponent is read
+        token_type number_type = token_type::value_unsigned;
+
+        // state (init): we just found out we need to scan a number
+        switch (current)
+        {
+            case '-':
+            {
+                add(current);
+                goto scan_number_minus;
+            }
+
+            case '0':
+            {
+                add(current);
+                goto scan_number_zero;
+            }
+
+            case '1':
+            case '2':
+            case '3':
+            case '4':
+            case '5':
+            case '6':
+            case '7':
+            case '8':
+            case '9':
+            {
+                add(current);
+                goto scan_number_any1;
+            }
+
+            // all other characters are rejected outside scan_number()
+            default:            // LCOV_EXCL_LINE
+                JSON_ASSERT(false); // NOLINT(cert-dcl03-c,hicpp-static-assert,misc-static-assert) LCOV_EXCL_LINE
+        }
+
+scan_number_minus:
+        // state: we just parsed a leading minus sign
+        number_type = token_type::value_integer;
+        switch (get())
+        {
+            case '0':
+            {
+                add(current);
+                goto scan_number_zero;
+            }
+
+            case '1':
+            case '2':
+            case '3':
+            case '4':
+            case '5':
+            case '6':
+            case '7':
+            case '8':
+            case '9':
+            {
+                add(current);
+                goto scan_number_any1;
+            }
+
+            default:
+            {
+                error_message = "invalid number; expected digit after '-'";
+                return token_type::parse_error;
+            }
+        }
+
+scan_number_zero:
+        // state: we just parse a zero (maybe with a leading minus sign)
+        switch (get())
+        {
+            case '.':
+            {
+                add(decimal_point_char);
+                goto scan_number_decimal1;
+            }
+
+            case 'e':
+            case 'E':
+            {
+                add(current);
+                goto scan_number_exponent;
+            }
+
+            default:
+                goto scan_number_done;
+        }
+
+scan_number_any1:
+        // state: we just parsed a number 0-9 (maybe with a leading minus sign)
+        switch (get())
+        {
+            case '0':
+            case '1':
+            case '2':
+            case '3':
+            case '4':
+            case '5':
+            case '6':
+            case '7':
+            case '8':
+            case '9':
+            {
+                add(current);
+                goto scan_number_any1;
+            }
+
+            case '.':
+            {
+                add(decimal_point_char);
+                goto scan_number_decimal1;
+            }
+
+            case 'e':
+            case 'E':
+            {
+                add(current);
+                goto scan_number_exponent;
+            }
+
+            default:
+                goto scan_number_done;
+        }
+
+scan_number_decimal1:
+        // state: we just parsed a decimal point
+        number_type = token_type::value_float;
+        switch (get())
+        {
+            case '0':
+            case '1':
+            case '2':
+            case '3':
+            case '4':
+            case '5':
+            case '6':
+            case '7':
+            case '8':
+            case '9':
+            {
+                add(current);
+                goto scan_number_decimal2;
+            }
+
+            default:
+            {
+                error_message = "invalid number; expected digit after '.'";
+                return token_type::parse_error;
+            }
+        }
+
+scan_number_decimal2:
+        // we just parsed at least one number after a decimal point
+        switch (get())
+        {
+            case '0':
+            case '1':
+            case '2':
+            case '3':
+            case '4':
+            case '5':
+            case '6':
+            case '7':
+            case '8':
+            case '9':
+            {
+                add(current);
+                goto scan_number_decimal2;
+            }
+
+            case 'e':
+            case 'E':
+            {
+                add(current);
+                goto scan_number_exponent;
+            }
+
+            default:
+                goto scan_number_done;
+        }
+
+scan_number_exponent:
+        // we just parsed an exponent
+        number_type = token_type::value_float;
+        switch (get())
+        {
+            case '+':
+            case '-':
+            {
+                add(current);
+                goto scan_number_sign;
+            }
+
+            case '0':
+            case '1':
+            case '2':
+            case '3':
+            case '4':
+            case '5':
+            case '6':
+            case '7':
+            case '8':
+            case '9':
+            {
+                add(current);
+                goto scan_number_any2;
+            }
+
+            default:
+            {
+                error_message =
+                    "invalid number; expected '+', '-', or digit after exponent";
+                return token_type::parse_error;
+            }
+        }
+
+scan_number_sign:
+        // we just parsed an exponent sign
+        switch (get())
+        {
+            case '0':
+            case '1':
+            case '2':
+            case '3':
+            case '4':
+            case '5':
+            case '6':
+            case '7':
+            case '8':
+            case '9':
+            {
+                add(current);
+                goto scan_number_any2;
+            }
+
+            default:
+            {
+                error_message = "invalid number; expected digit after exponent sign";
+                return token_type::parse_error;
+            }
+        }
+
+scan_number_any2:
+        // we just parsed a number after the exponent or exponent sign
+        switch (get())
+        {
+            case '0':
+            case '1':
+            case '2':
+            case '3':
+            case '4':
+            case '5':
+            case '6':
+            case '7':
+            case '8':
+            case '9':
+            {
+                add(current);
+                goto scan_number_any2;
+            }
+
+            default:
+                goto scan_number_done;
+        }
+
+scan_number_done:
+        // unget the character after the number (we only read it to know that
+        // we are done scanning a number)
+        unget();
+
+        char* endptr = nullptr; // NOLINT(cppcoreguidelines-pro-type-vararg,hicpp-vararg)
+        errno = 0;
+
+        // try to parse integers first and fall back to floats
+        if (number_type == token_type::value_unsigned)
+        {
+            const auto x = std::strtoull(token_buffer.data(), &endptr, 10);
+
+            // we checked the number format before
+            JSON_ASSERT(endptr == token_buffer.data() + token_buffer.size());
+
+            if (errno == 0)
+            {
+                value_unsigned = static_cast<number_unsigned_t>(x);
+                if (value_unsigned == x)
+                {
+                    return token_type::value_unsigned;
+                }
+            }
+        }
+        else if (number_type == token_type::value_integer)
+        {
+            const auto x = std::strtoll(token_buffer.data(), &endptr, 10);
+
+            // we checked the number format before
+            JSON_ASSERT(endptr == token_buffer.data() + token_buffer.size());
+
+            if (errno == 0)
+            {
+                value_integer = static_cast<number_integer_t>(x);
+                if (value_integer == x)
+                {
+                    return token_type::value_integer;
+                }
+            }
+        }
+
+        // this code is reached if we parse a floating-point number or if an
+        // integer conversion above failed
+        strtof(value_float, token_buffer.data(), &endptr);
+
+        // we checked the number format before
+        JSON_ASSERT(endptr == token_buffer.data() + token_buffer.size());
+
+        return token_type::value_float;
+    }
+
+    /*!
+    @param[in] literal_text  the literal text to expect
+    @param[in] length        the length of the passed literal text
+    @param[in] return_type   the token type to return on success
+    */
+    JSON_HEDLEY_NON_NULL(2)
+    token_type scan_literal(const char_type* literal_text, const std::size_t length,
+                            token_type return_type)
+    {
+        JSON_ASSERT(std::char_traits<char_type>::to_char_type(current) == literal_text[0]);
+        for (std::size_t i = 1; i < length; ++i)
+        {
+            if (JSON_HEDLEY_UNLIKELY(std::char_traits<char_type>::to_char_type(get()) != literal_text[i]))
+            {
+                error_message = "invalid literal";
+                return token_type::parse_error;
+            }
+        }
+        return return_type;
+    }
+
+    /////////////////////
+    // input management
+    /////////////////////
+
+    /// reset token_buffer; current character is beginning of token
+    void reset() noexcept
+    {
+        token_buffer.clear();
+        token_string.clear();
+        token_string.push_back(std::char_traits<char_type>::to_char_type(current));
+    }
+
+    /*
+    @brief get next character from the input
+
+    This function provides the interface to the used input adapter. It does
+    not throw in case the input reached EOF, but returns a
+    `std::char_traits<char>::eof()` in that case.  Stores the scanned characters
+    for use in error messages.
+
+    @return character read from the input
+    */
+    char_int_type get()
+    {
+        ++position.chars_read_total;
+        ++position.chars_read_current_line;
+
+        if (next_unget)
+        {
+            // just reset the next_unget variable and work with current
+            next_unget = false;
+        }
+        else
+        {
+            current = ia.get_character();
+        }
+
+        if (JSON_HEDLEY_LIKELY(current != std::char_traits<char_type>::eof()))
+        {
+            token_string.push_back(std::char_traits<char_type>::to_char_type(current));
+        }
+
+        if (current == '\n')
+        {
+            ++position.lines_read;
+            position.chars_read_current_line = 0;
+        }
+
+        return current;
+    }
+
+    /*!
+    @brief unget current character (read it again on next get)
+
+    We implement unget by setting variable next_unget to true. The input is not
+    changed - we just simulate ungetting by modifying chars_read_total,
+    chars_read_current_line, and token_string. The next call to get() will
+    behave as if the unget character is read again.
+    */
+    void unget()
+    {
+        next_unget = true;
+
+        --position.chars_read_total;
+
+        // in case we "unget" a newline, we have to also decrement the lines_read
+        if (position.chars_read_current_line == 0)
+        {
+            if (position.lines_read > 0)
+            {
+                --position.lines_read;
+            }
+        }
+        else
+        {
+            --position.chars_read_current_line;
+        }
+
+        if (JSON_HEDLEY_LIKELY(current != std::char_traits<char_type>::eof()))
+        {
+            JSON_ASSERT(!token_string.empty());
+            token_string.pop_back();
+        }
+    }
+
+    /// add a character to token_buffer
+    void add(char_int_type c)
+    {
+        token_buffer.push_back(static_cast<typename string_t::value_type>(c));
+    }
+
+  public:
+    /////////////////////
+    // value getters
+    /////////////////////
+
+    /// return integer value
+    constexpr number_integer_t get_number_integer() const noexcept
+    {
+        return value_integer;
+    }
+
+    /// return unsigned integer value
+    constexpr number_unsigned_t get_number_unsigned() const noexcept
+    {
+        return value_unsigned;
+    }
+
+    /// return floating-point value
+    constexpr number_float_t get_number_float() const noexcept
+    {
+        return value_float;
+    }
+
+    /// return current string value (implicitly resets the token; useful only once)
+    string_t& get_string()
+    {
+        return token_buffer;
+    }
+
+    /////////////////////
+    // diagnostics
+    /////////////////////
+
+    /// return position of last read token
+    constexpr position_t get_position() const noexcept
+    {
+        return position;
+    }
+
+    /// return the last read token (for errors only).  Will never contain EOF
+    /// (an arbitrary value that is not a valid char value, often -1), because
+    /// 255 may legitimately occur.  May contain NUL, which should be escaped.
+    std::string get_token_string() const
+    {
+        // escape control characters
+        std::string result;
+        for (const auto c : token_string)
+        {
+            if (static_cast<unsigned char>(c) <= '\x1F')
+            {
+                // escape control characters
+                std::array<char, 9> cs{{}};
+                static_cast<void>((std::snprintf)(cs.data(), cs.size(), "<U+%.4X>", static_cast<unsigned char>(c))); // NOLINT(cppcoreguidelines-pro-type-vararg,hicpp-vararg)
+                result += cs.data();
+            }
+            else
+            {
+                // add character as is
+                result.push_back(static_cast<std::string::value_type>(c));
+            }
+        }
+
+        return result;
+    }
+
+    /// return syntax error message
+    JSON_HEDLEY_RETURNS_NON_NULL
+    constexpr const char* get_error_message() const noexcept
+    {
+        return error_message;
+    }
+
+    /////////////////////
+    // actual scanner
+    /////////////////////
+
+    /*!
+    @brief skip the UTF-8 byte order mark
+    @return true iff there is no BOM or the correct BOM has been skipped
+    */
+    bool skip_bom()
+    {
+        if (get() == 0xEF)
+        {
+            // check if we completely parse the BOM
+            return get() == 0xBB && get() == 0xBF;
+        }
+
+        // the first character is not the beginning of the BOM; unget it to
+        // process is later
+        unget();
+        return true;
+    }
+
+    void skip_whitespace()
+    {
+        do
+        {
+            get();
+        }
+        while (current == ' ' || current == '\t' || current == '\n' || current == '\r');
+    }
+
+    token_type scan()
+    {
+        // initially, skip the BOM
+        if (position.chars_read_total == 0 && !skip_bom())
+        {
+            error_message = "invalid BOM; must be 0xEF 0xBB 0xBF if given";
+            return token_type::parse_error;
+        }
+
+        // read next character and ignore whitespace
+        skip_whitespace();
+
+        // ignore comments
+        while (ignore_comments && current == '/')
+        {
+            if (!scan_comment())
+            {
+                return token_type::parse_error;
+            }
+
+            // skip following whitespace
+            skip_whitespace();
+        }
+
+        switch (current)
+        {
+            // structural characters
+            case '[':
+                return token_type::begin_array;
+            case ']':
+                return token_type::end_array;
+            case '{':
+                return token_type::begin_object;
+            case '}':
+                return token_type::end_object;
+            case ':':
+                return token_type::name_separator;
+            case ',':
+                return token_type::value_separator;
+
+            // literals
+            case 't':
+            {
+                std::array<char_type, 4> true_literal = {{static_cast<char_type>('t'), static_cast<char_type>('r'), static_cast<char_type>('u'), static_cast<char_type>('e')}};
+                return scan_literal(true_literal.data(), true_literal.size(), token_type::literal_true);
+            }
+            case 'f':
+            {
+                std::array<char_type, 5> false_literal = {{static_cast<char_type>('f'), static_cast<char_type>('a'), static_cast<char_type>('l'), static_cast<char_type>('s'), static_cast<char_type>('e')}};
+                return scan_literal(false_literal.data(), false_literal.size(), token_type::literal_false);
+            }
+            case 'n':
+            {
+                std::array<char_type, 4> null_literal = {{static_cast<char_type>('n'), static_cast<char_type>('u'), static_cast<char_type>('l'), static_cast<char_type>('l')}};
+                return scan_literal(null_literal.data(), null_literal.size(), token_type::literal_null);
+            }
+
+            // string
+            case '\"':
+                return scan_string();
+
+            // number
+            case '-':
+            case '0':
+            case '1':
+            case '2':
+            case '3':
+            case '4':
+            case '5':
+            case '6':
+            case '7':
+            case '8':
+            case '9':
+                return scan_number();
+
+            // end of input (the null byte is needed when parsing from
+            // string literals)
+            case '\0':
+            case std::char_traits<char_type>::eof():
+                return token_type::end_of_input;
+
+            // error
+            default:
+                error_message = "invalid literal";
+                return token_type::parse_error;
+        }
+    }
+
+  private:
+    /// input adapter
+    InputAdapterType ia;
+
+    /// whether comments should be ignored (true) or signaled as errors (false)
+    const bool ignore_comments = false;
+
+    /// the current character
+    char_int_type current = std::char_traits<char_type>::eof();
+
+    /// whether the next get() call should just return current
+    bool next_unget = false;
+
+    /// the start position of the current token
+    position_t position {};
+
+    /// raw input token string (for error messages)
+    std::vector<char_type> token_string {};
+
+    /// buffer for variable-length tokens (numbers, strings)
+    string_t token_buffer {};
+
+    /// a description of occurred lexer errors
+    const char* error_message = "";
+
+    // number values
+    number_integer_t value_integer = 0;
+    number_unsigned_t value_unsigned = 0;
+    number_float_t value_float = 0;
+
+    /// the decimal point
+    const char_int_type decimal_point_char = '.';
+};
+
+}  // namespace detail
+NLOHMANN_JSON_NAMESPACE_END
+
+// #include <nlohmann/detail/macro_scope.hpp>
+
+// #include <nlohmann/detail/meta/is_sax.hpp>
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.2
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013-2022 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+
+
+#include <cstdint> // size_t
+#include <utility> // declval
+#include <string> // string
+
+// #include <nlohmann/detail/abi_macros.hpp>
+
+// #include <nlohmann/detail/meta/detected.hpp>
+
+// #include <nlohmann/detail/meta/type_traits.hpp>
+
+
+NLOHMANN_JSON_NAMESPACE_BEGIN
+namespace detail
+{
+
+template<typename T>
+using null_function_t = decltype(std::declval<T&>().null());
+
+template<typename T>
+using boolean_function_t =
+    decltype(std::declval<T&>().boolean(std::declval<bool>()));
+
+template<typename T, typename Integer>
+using number_integer_function_t =
+    decltype(std::declval<T&>().number_integer(std::declval<Integer>()));
+
+template<typename T, typename Unsigned>
+using number_unsigned_function_t =
+    decltype(std::declval<T&>().number_unsigned(std::declval<Unsigned>()));
+
+template<typename T, typename Float, typename String>
+using number_float_function_t = decltype(std::declval<T&>().number_float(
+                                    std::declval<Float>(), std::declval<const String&>()));
+
+template<typename T, typename String>
+using string_function_t =
+    decltype(std::declval<T&>().string(std::declval<String&>()));
+
+template<typename T, typename Binary>
+using binary_function_t =
+    decltype(std::declval<T&>().binary(std::declval<Binary&>()));
+
+template<typename T>
+using start_object_function_t =
+    decltype(std::declval<T&>().start_object(std::declval<std::size_t>()));
+
+template<typename T, typename String>
+using key_function_t =
+    decltype(std::declval<T&>().key(std::declval<String&>()));
+
+template<typename T>
+using end_object_function_t = decltype(std::declval<T&>().end_object());
+
+template<typename T>
+using start_array_function_t =
+    decltype(std::declval<T&>().start_array(std::declval<std::size_t>()));
+
+template<typename T>
+using end_array_function_t = decltype(std::declval<T&>().end_array());
+
+template<typename T, typename Exception>
+using parse_error_function_t = decltype(std::declval<T&>().parse_error(
+        std::declval<std::size_t>(), std::declval<const std::string&>(),
+        std::declval<const Exception&>()));
+
+template<typename SAX, typename BasicJsonType>
+struct is_sax
+{
+  private:
+    static_assert(is_basic_json<BasicJsonType>::value,
+                  "BasicJsonType must be of type basic_json<...>");
+
+    using number_integer_t = typename BasicJsonType::number_integer_t;
+    using number_unsigned_t = typename BasicJsonType::number_unsigned_t;
+    using number_float_t = typename BasicJsonType::number_float_t;
+    using string_t = typename BasicJsonType::string_t;
+    using binary_t = typename BasicJsonType::binary_t;
+    using exception_t = typename BasicJsonType::exception;
+
+  public:
+    static constexpr bool value =
+        is_detected_exact<bool, null_function_t, SAX>::value &&
+        is_detected_exact<bool, boolean_function_t, SAX>::value &&
+        is_detected_exact<bool, number_integer_function_t, SAX, number_integer_t>::value &&
+        is_detected_exact<bool, number_unsigned_function_t, SAX, number_unsigned_t>::value &&
+        is_detected_exact<bool, number_float_function_t, SAX, number_float_t, string_t>::value &&
+        is_detected_exact<bool, string_function_t, SAX, string_t>::value &&
+        is_detected_exact<bool, binary_function_t, SAX, binary_t>::value &&
+        is_detected_exact<bool, start_object_function_t, SAX>::value &&
+        is_detected_exact<bool, key_function_t, SAX, string_t>::value &&
+        is_detected_exact<bool, end_object_function_t, SAX>::value &&
+        is_detected_exact<bool, start_array_function_t, SAX>::value &&
+        is_detected_exact<bool, end_array_function_t, SAX>::value &&
+        is_detected_exact<bool, parse_error_function_t, SAX, exception_t>::value;
+};
+
+template<typename SAX, typename BasicJsonType>
+struct is_sax_static_asserts
+{
+  private:
+    static_assert(is_basic_json<BasicJsonType>::value,
+                  "BasicJsonType must be of type basic_json<...>");
+
+    using number_integer_t = typename BasicJsonType::number_integer_t;
+    using number_unsigned_t = typename BasicJsonType::number_unsigned_t;
+    using number_float_t = typename BasicJsonType::number_float_t;
+    using string_t = typename BasicJsonType::string_t;
+    using binary_t = typename BasicJsonType::binary_t;
+    using exception_t = typename BasicJsonType::exception;
+
+  public:
+    static_assert(is_detected_exact<bool, null_function_t, SAX>::value,
+                  "Missing/invalid function: bool null()");
+    static_assert(is_detected_exact<bool, boolean_function_t, SAX>::value,
+                  "Missing/invalid function: bool boolean(bool)");
+    static_assert(is_detected_exact<bool, boolean_function_t, SAX>::value,
+                  "Missing/invalid function: bool boolean(bool)");
+    static_assert(
+        is_detected_exact<bool, number_integer_function_t, SAX,
+        number_integer_t>::value,
+        "Missing/invalid function: bool number_integer(number_integer_t)");
+    static_assert(
+        is_detected_exact<bool, number_unsigned_function_t, SAX,
+        number_unsigned_t>::value,
+        "Missing/invalid function: bool number_unsigned(number_unsigned_t)");
+    static_assert(is_detected_exact<bool, number_float_function_t, SAX,
+                  number_float_t, string_t>::value,
+                  "Missing/invalid function: bool number_float(number_float_t, const string_t&)");
+    static_assert(
+        is_detected_exact<bool, string_function_t, SAX, string_t>::value,
+        "Missing/invalid function: bool string(string_t&)");
+    static_assert(
+        is_detected_exact<bool, binary_function_t, SAX, binary_t>::value,
+        "Missing/invalid function: bool binary(binary_t&)");
+    static_assert(is_detected_exact<bool, start_object_function_t, SAX>::value,
+                  "Missing/invalid function: bool start_object(std::size_t)");
+    static_assert(is_detected_exact<bool, key_function_t, SAX, string_t>::value,
+                  "Missing/invalid function: bool key(string_t&)");
+    static_assert(is_detected_exact<bool, end_object_function_t, SAX>::value,
+                  "Missing/invalid function: bool end_object()");
+    static_assert(is_detected_exact<bool, start_array_function_t, SAX>::value,
+                  "Missing/invalid function: bool start_array(std::size_t)");
+    static_assert(is_detected_exact<bool, end_array_function_t, SAX>::value,
+                  "Missing/invalid function: bool end_array()");
+    static_assert(
+        is_detected_exact<bool, parse_error_function_t, SAX, exception_t>::value,
+        "Missing/invalid function: bool parse_error(std::size_t, const "
+        "std::string&, const exception&)");
+};
+
+}  // namespace detail
+NLOHMANN_JSON_NAMESPACE_END
+
+// #include <nlohmann/detail/meta/type_traits.hpp>
+
+// #include <nlohmann/detail/string_concat.hpp>
+
+// #include <nlohmann/detail/value_t.hpp>
+
+
+NLOHMANN_JSON_NAMESPACE_BEGIN
+namespace detail
+{
+
+/// how to treat CBOR tags
+enum class cbor_tag_handler_t
+{
+    error,   ///< throw a parse_error exception in case of a tag
+    ignore,  ///< ignore tags
+    store    ///< store tags as binary type
+};
+
+/*!
+@brief determine system byte order
+
+@return true if and only if system's byte order is little endian
+
+@note from https://stackoverflow.com/a/1001328/266378
+*/
+static inline bool little_endianness(int num = 1) noexcept
+{
+    return *reinterpret_cast<char*>(&num) == 1;
+}
+
+
+///////////////////
+// binary reader //
+///////////////////
+
+/*!
+@brief deserialization of CBOR, MessagePack, and UBJSON values
+*/
+template<typename BasicJsonType, typename InputAdapterType, typename SAX = json_sax_dom_parser<BasicJsonType>>
+class binary_reader
+{
+    using number_integer_t = typename BasicJsonType::number_integer_t;
+    using number_unsigned_t = typename BasicJsonType::number_unsigned_t;
+    using number_float_t = typename BasicJsonType::number_float_t;
+    using string_t = typename BasicJsonType::string_t;
+    using binary_t = typename BasicJsonType::binary_t;
+    using json_sax_t = SAX;
+    using char_type = typename InputAdapterType::char_type;
+    using char_int_type = typename std::char_traits<char_type>::int_type;
+
+  public:
+    /*!
+    @brief create a binary reader
+
+    @param[in] adapter  input adapter to read from
+    */
+    explicit binary_reader(InputAdapterType&& adapter, const input_format_t format = input_format_t::json) noexcept : ia(std::move(adapter)), input_format(format)
+    {
+        (void)detail::is_sax_static_asserts<SAX, BasicJsonType> {};
+    }
+
+    // make class move-only
+    binary_reader(const binary_reader&) = delete;
+    binary_reader(binary_reader&&) = default; // NOLINT(hicpp-noexcept-move,performance-noexcept-move-constructor)
+    binary_reader& operator=(const binary_reader&) = delete;
+    binary_reader& operator=(binary_reader&&) = default; // NOLINT(hicpp-noexcept-move,performance-noexcept-move-constructor)
+    ~binary_reader() = default;
+
+    /*!
+    @param[in] format  the binary format to parse
+    @param[in] sax_    a SAX event processor
+    @param[in] strict  whether to expect the input to be consumed completed
+    @param[in] tag_handler  how to treat CBOR tags
+
+    @return whether parsing was successful
+    */
+    JSON_HEDLEY_NON_NULL(3)
+    bool sax_parse(const input_format_t format,
+                   json_sax_t* sax_,
+                   const bool strict = true,
+                   const cbor_tag_handler_t tag_handler = cbor_tag_handler_t::error)
+    {
+        sax = sax_;
+        bool result = false;
+
+        switch (format)
+        {
+            case input_format_t::bson:
+                result = parse_bson_internal();
+                break;
+
+            case input_format_t::cbor:
+                result = parse_cbor_internal(true, tag_handler);
+                break;
+
+            case input_format_t::msgpack:
+                result = parse_msgpack_internal();
+                break;
+
+            case input_format_t::ubjson:
+            case input_format_t::bjdata:
+                result = parse_ubjson_internal();
+                break;
+
+            case input_format_t::json: // LCOV_EXCL_LINE
+            default:            // LCOV_EXCL_LINE
+                JSON_ASSERT(false); // NOLINT(cert-dcl03-c,hicpp-static-assert,misc-static-assert) LCOV_EXCL_LINE
+        }
+
+        // strict mode: next byte must be EOF
+        if (result && strict)
+        {
+            if (input_format == input_format_t::ubjson || input_format == input_format_t::bjdata)
+            {
+                get_ignore_noop();
+            }
+            else
+            {
+                get();
+            }
+
+            if (JSON_HEDLEY_UNLIKELY(current != std::char_traits<char_type>::eof()))
+            {
+                return sax->parse_error(chars_read, get_token_string(), parse_error::create(110, chars_read,
+                                        exception_message(input_format, concat("expected end of input; last byte: 0x", get_token_string()), "value"), nullptr));
+            }
+        }
+
+        return result;
+    }
+
+  private:
+    //////////
+    // BSON //
+    //////////
+
+    /*!
+    @brief Reads in a BSON-object and passes it to the SAX-parser.
+    @return whether a valid BSON-value was passed to the SAX parser
+    */
+    bool parse_bson_internal()
+    {
+        std::int32_t document_size{};
+        get_number<std::int32_t, true>(input_format_t::bson, document_size);
+
+        if (JSON_HEDLEY_UNLIKELY(!sax->start_object(static_cast<std::size_t>(-1))))
+        {
+            return false;
+        }
+
+        if (JSON_HEDLEY_UNLIKELY(!parse_bson_element_list(/*is_array*/false)))
+        {
+            return false;
+        }
+
+        return sax->end_object();
+    }
+
+    /*!
+    @brief Parses a C-style string from the BSON input.
+    @param[in,out] result  A reference to the string variable where the read
+                            string is to be stored.
+    @return `true` if the \x00-byte indicating the end of the string was
+             encountered before the EOF; false` indicates an unexpected EOF.
+    */
+    bool get_bson_cstr(string_t& result)
+    {
+        auto out = std::back_inserter(result);
+        while (true)
+        {
+            get();
+            if (JSON_HEDLEY_UNLIKELY(!unexpect_eof(input_format_t::bson, "cstring")))
+            {
+                return false;
+            }
+            if (current == 0x00)
+            {
+                return true;
+            }
+            *out++ = static_cast<typename string_t::value_type>(current);
+        }
+    }
+
+    /*!
+    @brief Parses a zero-terminated string of length @a len from the BSON
+           input.
+    @param[in] len  The length (including the zero-byte at the end) of the
+                    string to be read.
+    @param[in,out] result  A reference to the string variable where the read
+                            string is to be stored.
+    @tparam NumberType The type of the length @a len
+    @pre len >= 1
+    @return `true` if the string was successfully parsed
+    */
+    template<typename NumberType>
+    bool get_bson_string(const NumberType len, string_t& result)
+    {
+        if (JSON_HEDLEY_UNLIKELY(len < 1))
+        {
+            auto last_token = get_token_string();
+            return sax->parse_error(chars_read, last_token, parse_error::create(112, chars_read,
+                                    exception_message(input_format_t::bson, concat("string length must be at least 1, is ", std::to_string(len)), "string"), nullptr));
+        }
+
+        return get_string(input_format_t::bson, len - static_cast<NumberType>(1), result) && get() != std::char_traits<char_type>::eof();
+    }
+
+    /*!
+    @brief Parses a byte array input of length @a len from the BSON input.
+    @param[in] len  The length of the byte array to be read.
+    @param[in,out] result  A reference to the binary variable where the read
+                            array is to be stored.
+    @tparam NumberType The type of the length @a len
+    @pre len >= 0
+    @return `true` if the byte array was successfully parsed
+    */
+    template<typename NumberType>
+    bool get_bson_binary(const NumberType len, binary_t& result)
+    {
+        if (JSON_HEDLEY_UNLIKELY(len < 0))
+        {
+            auto last_token = get_token_string();
+            return sax->parse_error(chars_read, last_token, parse_error::create(112, chars_read,
+                                    exception_message(input_format_t::bson, concat("byte array length cannot be negative, is ", std::to_string(len)), "binary"), nullptr));
+        }
+
+        // All BSON binary values have a subtype
+        std::uint8_t subtype{};
+        get_number<std::uint8_t>(input_format_t::bson, subtype);
+        result.set_subtype(subtype);
+
+        return get_binary(input_format_t::bson, len, result);
+    }
+
+    /*!
+    @brief Read a BSON document element of the given @a element_type.
+    @param[in] element_type The BSON element type, c.f. http://bsonspec.org/spec.html
+    @param[in] element_type_parse_position The position in the input stream,
+               where the `element_type` was read.
+    @warning Not all BSON element types are supported yet. An unsupported
+             @a element_type will give rise to a parse_error.114:
+             Unsupported BSON record type 0x...
+    @return whether a valid BSON-object/array was passed to the SAX parser
+    */
+    bool parse_bson_element_internal(const char_int_type element_type,
+                                     const std::size_t element_type_parse_position)
+    {
+        switch (element_type)
+        {
+            case 0x01: // double
+            {
+                double number{};
+                return get_number<double, true>(input_format_t::bson, number) && sax->number_float(static_cast<number_float_t>(number), "");
+            }
+
+            case 0x02: // string
+            {
+                std::int32_t len{};
+                string_t value;
+                return get_number<std::int32_t, true>(input_format_t::bson, len) && get_bson_string(len, value) && sax->string(value);
+            }
+
+            case 0x03: // object
+            {
+                return parse_bson_internal();
+            }
+
+            case 0x04: // array
+            {
+                return parse_bson_array();
+            }
+
+            case 0x05: // binary
+            {
+                std::int32_t len{};
+                binary_t value;
+                return get_number<std::int32_t, true>(input_format_t::bson, len) && get_bson_binary(len, value) && sax->binary(value);
+            }
+
+            case 0x08: // boolean
+            {
+                return sax->boolean(get() != 0);
+            }
+
+            case 0x0A: // null
+            {
+                return sax->null();
+            }
+
+            case 0x10: // int32
+            {
+                std::int32_t value{};
+                return get_number<std::int32_t, true>(input_format_t::bson, value) && sax->number_integer(value);
+            }
+
+            case 0x12: // int64
+            {
+                std::int64_t value{};
+                return get_number<std::int64_t, true>(input_format_t::bson, value) && sax->number_integer(value);
+            }
+
+            default: // anything else not supported (yet)
+            {
+                std::array<char, 3> cr{{}};
+                static_cast<void>((std::snprintf)(cr.data(), cr.size(), "%.2hhX", static_cast<unsigned char>(element_type))); // NOLINT(cppcoreguidelines-pro-type-vararg,hicpp-vararg)
+                const std::string cr_str{cr.data()};
+                return sax->parse_error(element_type_parse_position, cr_str,
+                                        parse_error::create(114, element_type_parse_position, concat("Unsupported BSON record type 0x", cr_str), nullptr));
+            }
+        }
+    }
+
+    /*!
+    @brief Read a BSON element list (as specified in the BSON-spec)
+
+    The same binary layout is used for objects and arrays, hence it must be
+    indicated with the argument @a is_array which one is expected
+    (true --> array, false --> object).
+
+    @param[in] is_array Determines if the element list being read is to be
+                        treated as an object (@a is_array == false), or as an
+                        array (@a is_array == true).
+    @return whether a valid BSON-object/array was passed to the SAX parser
+    */
+    bool parse_bson_element_list(const bool is_array)
+    {
+        string_t key;
+
+        while (auto element_type = get())
+        {
+            if (JSON_HEDLEY_UNLIKELY(!unexpect_eof(input_format_t::bson, "element list")))
+            {
+                return false;
+            }
+
+            const std::size_t element_type_parse_position = chars_read;
+            if (JSON_HEDLEY_UNLIKELY(!get_bson_cstr(key)))
+            {
+                return false;
+            }
+
+            if (!is_array && !sax->key(key))
+            {
+                return false;
+            }
+
+            if (JSON_HEDLEY_UNLIKELY(!parse_bson_element_internal(element_type, element_type_parse_position)))
+            {
+                return false;
+            }
+
+            // get_bson_cstr only appends
+            key.clear();
+        }
+
+        return true;
+    }
+
+    /*!
+    @brief Reads an array from the BSON input and passes it to the SAX-parser.
+    @return whether a valid BSON-array was passed to the SAX parser
+    */
+    bool parse_bson_array()
+    {
+        std::int32_t document_size{};
+        get_number<std::int32_t, true>(input_format_t::bson, document_size);
+
+        if (JSON_HEDLEY_UNLIKELY(!sax->start_array(static_cast<std::size_t>(-1))))
+        {
+            return false;
+        }
+
+        if (JSON_HEDLEY_UNLIKELY(!parse_bson_element_list(/*is_array*/true)))
+        {
+            return false;
+        }
+
+        return sax->end_array();
+    }
+
+    //////////
+    // CBOR //
+    //////////
+
+    /*!
+    @param[in] get_char  whether a new character should be retrieved from the
+                         input (true) or whether the last read character should
+                         be considered instead (false)
+    @param[in] tag_handler how CBOR tags should be treated
+
+    @return whether a valid CBOR value was passed to the SAX parser
+    */
+    bool parse_cbor_internal(const bool get_char,
+                             const cbor_tag_handler_t tag_handler)
+    {
+        switch (get_char ? get() : current)
+        {
+            // EOF
+            case std::char_traits<char_type>::eof():
+                return unexpect_eof(input_format_t::cbor, "value");
+
+            // Integer 0x00..0x17 (0..23)
+            case 0x00:
+            case 0x01:
+            case 0x02:
+            case 0x03:
+            case 0x04:
+            case 0x05:
+            case 0x06:
+            case 0x07:
+            case 0x08:
+            case 0x09:
+            case 0x0A:
+            case 0x0B:
+            case 0x0C:
+            case 0x0D:
+            case 0x0E:
+            case 0x0F:
+            case 0x10:
+            case 0x11:
+            case 0x12:
+            case 0x13:
+            case 0x14:
+            case 0x15:
+            case 0x16:
+            case 0x17:
+                return sax->number_unsigned(static_cast<number_unsigned_t>(current));
+
+            case 0x18: // Unsigned integer (one-byte uint8_t follows)
+            {
+                std::uint8_t number{};
+                return get_number(input_format_t::cbor, number) && sax->number_unsigned(number);
+            }
+
+            case 0x19: // Unsigned integer (two-byte uint16_t follows)
+            {
+                std::uint16_t number{};
+                return get_number(input_format_t::cbor, number) && sax->number_unsigned(number);
+            }
+
+            case 0x1A: // Unsigned integer (four-byte uint32_t follows)
+            {
+                std::uint32_t number{};
+                return get_number(input_format_t::cbor, number) && sax->number_unsigned(number);
+            }
+
+            case 0x1B: // Unsigned integer (eight-byte uint64_t follows)
+            {
+                std::uint64_t number{};
+                return get_number(input_format_t::cbor, number) && sax->number_unsigned(number);
+            }
+
+            // Negative integer -1-0x00..-1-0x17 (-1..-24)
+            case 0x20:
+            case 0x21:
+            case 0x22:
+            case 0x23:
+            case 0x24:
+            case 0x25:
+            case 0x26:
+            case 0x27:
+            case 0x28:
+            case 0x29:
+            case 0x2A:
+            case 0x2B:
+            case 0x2C:
+            case 0x2D:
+            case 0x2E:
+            case 0x2F:
+            case 0x30:
+            case 0x31:
+            case 0x32:
+            case 0x33:
+            case 0x34:
+            case 0x35:
+            case 0x36:
+            case 0x37:
+                return sax->number_integer(static_cast<std::int8_t>(0x20 - 1 - current));
+
+            case 0x38: // Negative integer (one-byte uint8_t follows)
+            {
+                std::uint8_t number{};
+                return get_number(input_format_t::cbor, number) && sax->number_integer(static_cast<number_integer_t>(-1) - number);
+            }
+
+            case 0x39: // Negative integer -1-n (two-byte uint16_t follows)
+            {
+                std::uint16_t number{};
+                return get_number(input_format_t::cbor, number) && sax->number_integer(static_cast<number_integer_t>(-1) - number);
+            }
+
+            case 0x3A: // Negative integer -1-n (four-byte uint32_t follows)
+            {
+                std::uint32_t number{};
+                return get_number(input_format_t::cbor, number) && sax->number_integer(static_cast<number_integer_t>(-1) - number);
+            }
+
+            case 0x3B: // Negative integer -1-n (eight-byte uint64_t follows)
+            {
+                std::uint64_t number{};
+                return get_number(input_format_t::cbor, number) && sax->number_integer(static_cast<number_integer_t>(-1)
+                        - static_cast<number_integer_t>(number));
+            }
+
+            // Binary data (0x00..0x17 bytes follow)
+            case 0x40:
+            case 0x41:
+            case 0x42:
+            case 0x43:
+            case 0x44:
+            case 0x45:
+            case 0x46:
+            case 0x47:
+            case 0x48:
+            case 0x49:
+            case 0x4A:
+            case 0x4B:
+            case 0x4C:
+            case 0x4D:
+            case 0x4E:
+            case 0x4F:
+            case 0x50:
+            case 0x51:
+            case 0x52:
+            case 0x53:
+            case 0x54:
+            case 0x55:
+            case 0x56:
+            case 0x57:
+            case 0x58: // Binary data (one-byte uint8_t for n follows)
+            case 0x59: // Binary data (two-byte uint16_t for n follow)
+            case 0x5A: // Binary data (four-byte uint32_t for n follow)
+            case 0x5B: // Binary data (eight-byte uint64_t for n follow)
+            case 0x5F: // Binary data (indefinite length)
+            {
+                binary_t b;
+                return get_cbor_binary(b) && sax->binary(b);
+            }
+
+            // UTF-8 string (0x00..0x17 bytes follow)
+            case 0x60:
+            case 0x61:
+            case 0x62:
+            case 0x63:
+            case 0x64:
+            case 0x65:
+            case 0x66:
+            case 0x67:
+            case 0x68:
+            case 0x69:
+            case 0x6A:
+            case 0x6B:
+            case 0x6C:
+            case 0x6D:
+            case 0x6E:
+            case 0x6F:
+            case 0x70:
+            case 0x71:
+            case 0x72:
+            case 0x73:
+            case 0x74:
+            case 0x75:
+            case 0x76:
+            case 0x77:
+            case 0x78: // UTF-8 string (one-byte uint8_t for n follows)
+            case 0x79: // UTF-8 string (two-byte uint16_t for n follow)
+            case 0x7A: // UTF-8 string (four-byte uint32_t for n follow)
+            case 0x7B: // UTF-8 string (eight-byte uint64_t for n follow)
+            case 0x7F: // UTF-8 string (indefinite length)
+            {
+                string_t s;
+                return get_cbor_string(s) && sax->string(s);
+            }
+
+            // array (0x00..0x17 data items follow)
+            case 0x80:
+            case 0x81:
+            case 0x82:
+            case 0x83:
+            case 0x84:
+            case 0x85:
+            case 0x86:
+            case 0x87:
+            case 0x88:
+            case 0x89:
+            case 0x8A:
+            case 0x8B:
+            case 0x8C:
+            case 0x8D:
+            case 0x8E:
+            case 0x8F:
+            case 0x90:
+            case 0x91:
+            case 0x92:
+            case 0x93:
+            case 0x94:
+            case 0x95:
+            case 0x96:
+            case 0x97:
+                return get_cbor_array(
+                           conditional_static_cast<std::size_t>(static_cast<unsigned int>(current) & 0x1Fu), tag_handler);
+
+            case 0x98: // array (one-byte uint8_t for n follows)
+            {
+                std::uint8_t len{};
+                return get_number(input_format_t::cbor, len) && get_cbor_array(static_cast<std::size_t>(len), tag_handler);
+            }
+
+            case 0x99: // array (two-byte uint16_t for n follow)
+            {
+                std::uint16_t len{};
+                return get_number(input_format_t::cbor, len) && get_cbor_array(static_cast<std::size_t>(len), tag_handler);
+            }
+
+            case 0x9A: // array (four-byte uint32_t for n follow)
+            {
+                std::uint32_t len{};
+                return get_number(input_format_t::cbor, len) && get_cbor_array(conditional_static_cast<std::size_t>(len), tag_handler);
+            }
+
+            case 0x9B: // array (eight-byte uint64_t for n follow)
+            {
+                std::uint64_t len{};
+                return get_number(input_format_t::cbor, len) && get_cbor_array(conditional_static_cast<std::size_t>(len), tag_handler);
+            }
+
+            case 0x9F: // array (indefinite length)
+                return get_cbor_array(static_cast<std::size_t>(-1), tag_handler);
+
+            // map (0x00..0x17 pairs of data items follow)
+            case 0xA0:
+            case 0xA1:
+            case 0xA2:
+            case 0xA3:
+            case 0xA4:
+            case 0xA5:
+            case 0xA6:
+            case 0xA7:
+            case 0xA8:
+            case 0xA9:
+            case 0xAA:
+            case 0xAB:
+            case 0xAC:
+            case 0xAD:
+            case 0xAE:
+            case 0xAF:
+            case 0xB0:
+            case 0xB1:
+            case 0xB2:
+            case 0xB3:
+            case 0xB4:
+            case 0xB5:
+            case 0xB6:
+            case 0xB7:
+                return get_cbor_object(conditional_static_cast<std::size_t>(static_cast<unsigned int>(current) & 0x1Fu), tag_handler);
+
+            case 0xB8: // map (one-byte uint8_t for n follows)
+            {
+                std::uint8_t len{};
+                return get_number(input_format_t::cbor, len) && get_cbor_object(static_cast<std::size_t>(len), tag_handler);
+            }
+
+            case 0xB9: // map (two-byte uint16_t for n follow)
+            {
+                std::uint16_t len{};
+                return get_number(input_format_t::cbor, len) && get_cbor_object(static_cast<std::size_t>(len), tag_handler);
+            }
+
+            case 0xBA: // map (four-byte uint32_t for n follow)
+            {
+                std::uint32_t len{};
+                return get_number(input_format_t::cbor, len) && get_cbor_object(conditional_static_cast<std::size_t>(len), tag_handler);
+            }
+
+            case 0xBB: // map (eight-byte uint64_t for n follow)
+            {
+                std::uint64_t len{};
+                return get_number(input_format_t::cbor, len) && get_cbor_object(conditional_static_cast<std::size_t>(len), tag_handler);
+            }
+
+            case 0xBF: // map (indefinite length)
+                return get_cbor_object(static_cast<std::size_t>(-1), tag_handler);
+
+            case 0xC6: // tagged item
+            case 0xC7:
+            case 0xC8:
+            case 0xC9:
+            case 0xCA:
+            case 0xCB:
+            case 0xCC:
+            case 0xCD:
+            case 0xCE:
+            case 0xCF:
+            case 0xD0:
+            case 0xD1:
+            case 0xD2:
+            case 0xD3:
+            case 0xD4:
+            case 0xD8: // tagged item (1 bytes follow)
+            case 0xD9: // tagged item (2 bytes follow)
+            case 0xDA: // tagged item (4 bytes follow)
+            case 0xDB: // tagged item (8 bytes follow)
+            {
+                switch (tag_handler)
+                {
+                    case cbor_tag_handler_t::error:
+                    {
+                        auto last_token = get_token_string();
+                        return sax->parse_error(chars_read, last_token, parse_error::create(112, chars_read,
+                                                exception_message(input_format_t::cbor, concat("invalid byte: 0x", last_token), "value"), nullptr));
+                    }
+
+                    case cbor_tag_handler_t::ignore:
+                    {
+                        // ignore binary subtype
+                        switch (current)
+                        {
+                            case 0xD8:
+                            {
+                                std::uint8_t subtype_to_ignore{};
+                                get_number(input_format_t::cbor, subtype_to_ignore);
+                                break;
+                            }
+                            case 0xD9:
+                            {
+                                std::uint16_t subtype_to_ignore{};
+                                get_number(input_format_t::cbor, subtype_to_ignore);
+                                break;
+                            }
+                            case 0xDA:
+                            {
+                                std::uint32_t subtype_to_ignore{};
+                                get_number(input_format_t::cbor, subtype_to_ignore);
+                                break;
+                            }
+                            case 0xDB:
+                            {
+                                std::uint64_t subtype_to_ignore{};
+                                get_number(input_format_t::cbor, subtype_to_ignore);
+                                break;
+                            }
+                            default:
+                                break;
+                        }
+                        return parse_cbor_internal(true, tag_handler);
+                    }
+
+                    case cbor_tag_handler_t::store:
+                    {
+                        binary_t b;
+                        // use binary subtype and store in binary container
+                        switch (current)
+                        {
+                            case 0xD8:
+                            {
+                                std::uint8_t subtype{};
+                                get_number(input_format_t::cbor, subtype);
+                                b.set_subtype(detail::conditional_static_cast<typename binary_t::subtype_type>(subtype));
+                                break;
+                            }
+                            case 0xD9:
+                            {
+                                std::uint16_t subtype{};
+                                get_number(input_format_t::cbor, subtype);
+                                b.set_subtype(detail::conditional_static_cast<typename binary_t::subtype_type>(subtype));
+                                break;
+                            }
+                            case 0xDA:
+                            {
+                                std::uint32_t subtype{};
+                                get_number(input_format_t::cbor, subtype);
+                                b.set_subtype(detail::conditional_static_cast<typename binary_t::subtype_type>(subtype));
+                                break;
+                            }
+                            case 0xDB:
+                            {
+                                std::uint64_t subtype{};
+                                get_number(input_format_t::cbor, subtype);
+                                b.set_subtype(detail::conditional_static_cast<typename binary_t::subtype_type>(subtype));
+                                break;
+                            }
+                            default:
+                                return parse_cbor_internal(true, tag_handler);
+                        }
+                        get();
+                        return get_cbor_binary(b) && sax->binary(b);
+                    }
+
+                    default:                 // LCOV_EXCL_LINE
+                        JSON_ASSERT(false); // NOLINT(cert-dcl03-c,hicpp-static-assert,misc-static-assert) LCOV_EXCL_LINE
+                        return false;        // LCOV_EXCL_LINE
+                }
+            }
+
+            case 0xF4: // false
+                return sax->boolean(false);
+
+            case 0xF5: // true
+                return sax->boolean(true);
+
+            case 0xF6: // null
+                return sax->null();
+
+            case 0xF9: // Half-Precision Float (two-byte IEEE 754)
+            {
+                const auto byte1_raw = get();
+                if (JSON_HEDLEY_UNLIKELY(!unexpect_eof(input_format_t::cbor, "number")))
+                {
+                    return false;
+                }
+                const auto byte2_raw = get();
+                if (JSON_HEDLEY_UNLIKELY(!unexpect_eof(input_format_t::cbor, "number")))
+                {
+                    return false;
+                }
+
+                const auto byte1 = static_cast<unsigned char>(byte1_raw);
+                const auto byte2 = static_cast<unsigned char>(byte2_raw);
+
+                // code from RFC 7049, Appendix D, Figure 3:
+                // As half-precision floating-point numbers were only added
+                // to IEEE 754 in 2008, today's programming platforms often
+                // still only have limited support for them. It is very
+                // easy to include at least decoding support for them even
+                // without such support. An example of a small decoder for
+                // half-precision floating-point numbers in the C language
+                // is shown in Fig. 3.
+                const auto half = static_cast<unsigned int>((byte1 << 8u) + byte2);
+                const double val = [&half]
+                {
+                    const int exp = (half >> 10u) & 0x1Fu;
+                    const unsigned int mant = half & 0x3FFu;
+                    JSON_ASSERT(0 <= exp&& exp <= 32);
+                    JSON_ASSERT(mant <= 1024);
+                    switch (exp)
+                    {
+                        case 0:
+                            return std::ldexp(mant, -24);
+                        case 31:
+                            return (mant == 0)
+                            ? std::numeric_limits<double>::infinity()
+                            : std::numeric_limits<double>::quiet_NaN();
+                        default:
+                            return std::ldexp(mant + 1024, exp - 25);
+                    }
+                }();
+                return sax->number_float((half & 0x8000u) != 0
+                                         ? static_cast<number_float_t>(-val)
+                                         : static_cast<number_float_t>(val), "");
+            }
+
+            case 0xFA: // Single-Precision Float (four-byte IEEE 754)
+            {
+                float number{};
+                return get_number(input_format_t::cbor, number) && sax->number_float(static_cast<number_float_t>(number), "");
+            }
+
+            case 0xFB: // Double-Precision Float (eight-byte IEEE 754)
+            {
+                double number{};
+                return get_number(input_format_t::cbor, number) && sax->number_float(static_cast<number_float_t>(number), "");
+            }
+
+            default: // anything else (0xFF is handled inside the other types)
+            {
+                auto last_token = get_token_string();
+                return sax->parse_error(chars_read, last_token, parse_error::create(112, chars_read,
+                                        exception_message(input_format_t::cbor, concat("invalid byte: 0x", last_token), "value"), nullptr));
+            }
+        }
+    }
+
+    /*!
+    @brief reads a CBOR string
+
+    This function first reads starting bytes to determine the expected
+    string length and then copies this number of bytes into a string.
+    Additionally, CBOR's strings with indefinite lengths are supported.
+
+    @param[out] result  created string
+
+    @return whether string creation completed
+    */
+    bool get_cbor_string(string_t& result)
+    {
+        if (JSON_HEDLEY_UNLIKELY(!unexpect_eof(input_format_t::cbor, "string")))
+        {
+            return false;
+        }
+
+        switch (current)
+        {
+            // UTF-8 string (0x00..0x17 bytes follow)
+            case 0x60:
+            case 0x61:
+            case 0x62:
+            case 0x63:
+            case 0x64:
+            case 0x65:
+            case 0x66:
+            case 0x67:
+            case 0x68:
+            case 0x69:
+            case 0x6A:
+            case 0x6B:
+            case 0x6C:
+            case 0x6D:
+            case 0x6E:
+            case 0x6F:
+            case 0x70:
+            case 0x71:
+            case 0x72:
+            case 0x73:
+            case 0x74:
+            case 0x75:
+            case 0x76:
+            case 0x77:
+            {
+                return get_string(input_format_t::cbor, static_cast<unsigned int>(current) & 0x1Fu, result);
+            }
+
+            case 0x78: // UTF-8 string (one-byte uint8_t for n follows)
+            {
+                std::uint8_t len{};
+                return get_number(input_format_t::cbor, len) && get_string(input_format_t::cbor, len, result);
+            }
+
+            case 0x79: // UTF-8 string (two-byte uint16_t for n follow)
+            {
+                std::uint16_t len{};
+                return get_number(input_format_t::cbor, len) && get_string(input_format_t::cbor, len, result);
+            }
+
+            case 0x7A: // UTF-8 string (four-byte uint32_t for n follow)
+            {
+                std::uint32_t len{};
+                return get_number(input_format_t::cbor, len) && get_string(input_format_t::cbor, len, result);
+            }
+
+            case 0x7B: // UTF-8 string (eight-byte uint64_t for n follow)
+            {
+                std::uint64_t len{};
+                return get_number(input_format_t::cbor, len) && get_string(input_format_t::cbor, len, result);
+            }
+
+            case 0x7F: // UTF-8 string (indefinite length)
+            {
+                while (get() != 0xFF)
+                {
+                    string_t chunk;
+                    if (!get_cbor_string(chunk))
+                    {
+                        return false;
+                    }
+                    result.append(chunk);
+                }
+                return true;
+            }
+
+            default:
+            {
+                auto last_token = get_token_string();
+                return sax->parse_error(chars_read, last_token, parse_error::create(113, chars_read,
+                                        exception_message(input_format_t::cbor, concat("expected length specification (0x60-0x7B) or indefinite string type (0x7F); last byte: 0x", last_token), "string"), nullptr));
+            }
+        }
+    }
+
+    /*!
+    @brief reads a CBOR byte array
+
+    This function first reads starting bytes to determine the expected
+    byte array length and then copies this number of bytes into the byte array.
+    Additionally, CBOR's byte arrays with indefinite lengths are supported.
+
+    @param[out] result  created byte array
+
+    @return whether byte array creation completed
+    */
+    bool get_cbor_binary(binary_t& result)
+    {
+        if (JSON_HEDLEY_UNLIKELY(!unexpect_eof(input_format_t::cbor, "binary")))
+        {
+            return false;
+        }
+
+        switch (current)
+        {
+            // Binary data (0x00..0x17 bytes follow)
+            case 0x40:
+            case 0x41:
+            case 0x42:
+            case 0x43:
+            case 0x44:
+            case 0x45:
+            case 0x46:
+            case 0x47:
+            case 0x48:
+            case 0x49:
+            case 0x4A:
+            case 0x4B:
+            case 0x4C:
+            case 0x4D:
+            case 0x4E:
+            case 0x4F:
+            case 0x50:
+            case 0x51:
+            case 0x52:
+            case 0x53:
+            case 0x54:
+            case 0x55:
+            case 0x56:
+            case 0x57:
+            {
+                return get_binary(input_format_t::cbor, static_cast<unsigned int>(current) & 0x1Fu, result);
+            }
+
+            case 0x58: // Binary data (one-byte uint8_t for n follows)
+            {
+                std::uint8_t len{};
+                return get_number(input_format_t::cbor, len) &&
+                       get_binary(input_format_t::cbor, len, result);
+            }
+
+            case 0x59: // Binary data (two-byte uint16_t for n follow)
+            {
+                std::uint16_t len{};
+                return get_number(input_format_t::cbor, len) &&
+                       get_binary(input_format_t::cbor, len, result);
+            }
+
+            case 0x5A: // Binary data (four-byte uint32_t for n follow)
+            {
+                std::uint32_t len{};
+                return get_number(input_format_t::cbor, len) &&
+                       get_binary(input_format_t::cbor, len, result);
+            }
+
+            case 0x5B: // Binary data (eight-byte uint64_t for n follow)
+            {
+                std::uint64_t len{};
+                return get_number(input_format_t::cbor, len) &&
+                       get_binary(input_format_t::cbor, len, result);
+            }
+
+            case 0x5F: // Binary data (indefinite length)
+            {
+                while (get() != 0xFF)
+                {
+                    binary_t chunk;
+                    if (!get_cbor_binary(chunk))
+                    {
+                        return false;
+                    }
+                    result.insert(result.end(), chunk.begin(), chunk.end());
+                }
+                return true;
+            }
+
+            default:
+            {
+                auto last_token = get_token_string();
+                return sax->parse_error(chars_read, last_token, parse_error::create(113, chars_read,
+                                        exception_message(input_format_t::cbor, concat("expected length specification (0x40-0x5B) or indefinite binary array type (0x5F); last byte: 0x", last_token), "binary"), nullptr));
+            }
+        }
+    }
+
+    /*!
+    @param[in] len  the length of the array or static_cast<std::size_t>(-1) for an
+                    array of indefinite size
+    @param[in] tag_handler how CBOR tags should be treated
+    @return whether array creation completed
+    */
+    bool get_cbor_array(const std::size_t len,
+                        const cbor_tag_handler_t tag_handler)
+    {
+        if (JSON_HEDLEY_UNLIKELY(!sax->start_array(len)))
+        {
+            return false;
+        }
+
+        if (len != static_cast<std::size_t>(-1))
+        {
+            for (std::size_t i = 0; i < len; ++i)
+            {
+                if (JSON_HEDLEY_UNLIKELY(!parse_cbor_internal(true, tag_handler)))
+                {
+                    return false;
+                }
+            }
+        }
+        else
+        {
+            while (get() != 0xFF)
+            {
+                if (JSON_HEDLEY_UNLIKELY(!parse_cbor_internal(false, tag_handler)))
+                {
+                    return false;
+                }
+            }
+        }
+
+        return sax->end_array();
+    }
+
+    /*!
+    @param[in] len  the length of the object or static_cast<std::size_t>(-1) for an
+                    object of indefinite size
+    @param[in] tag_handler how CBOR tags should be treated
+    @return whether object creation completed
+    */
+    bool get_cbor_object(const std::size_t len,
+                         const cbor_tag_handler_t tag_handler)
+    {
+        if (JSON_HEDLEY_UNLIKELY(!sax->start_object(len)))
+        {
+            return false;
+        }
+
+        if (len != 0)
+        {
+            string_t key;
+            if (len != static_cast<std::size_t>(-1))
+            {
+                for (std::size_t i = 0; i < len; ++i)
+                {
+                    get();
+                    if (JSON_HEDLEY_UNLIKELY(!get_cbor_string(key) || !sax->key(key)))
+                    {
+                        return false;
+                    }
+
+                    if (JSON_HEDLEY_UNLIKELY(!parse_cbor_internal(true, tag_handler)))
+                    {
+                        return false;
+                    }
+                    key.clear();
+                }
+            }
+            else
+            {
+                while (get() != 0xFF)
+                {
+                    if (JSON_HEDLEY_UNLIKELY(!get_cbor_string(key) || !sax->key(key)))
+                    {
+                        return false;
+                    }
+
+                    if (JSON_HEDLEY_UNLIKELY(!parse_cbor_internal(true, tag_handler)))
+                    {
+                        return false;
+                    }
+                    key.clear();
+                }
+            }
+        }
+
+        return sax->end_object();
+    }
+
+    /////////////
+    // MsgPack //
+    /////////////
+
+    /*!
+    @return whether a valid MessagePack value was passed to the SAX parser
+    */
+    bool parse_msgpack_internal()
+    {
+        switch (get())
+        {
+            // EOF
+            case std::char_traits<char_type>::eof():
+                return unexpect_eof(input_format_t::msgpack, "value");
+
+            // positive fixint
+            case 0x00:
+            case 0x01:
+            case 0x02:
+            case 0x03:
+            case 0x04:
+            case 0x05:
+            case 0x06:
+            case 0x07:
+            case 0x08:
+            case 0x09:
+            case 0x0A:
+            case 0x0B:
+            case 0x0C:
+            case 0x0D:
+            case 0x0E:
+            case 0x0F:
+            case 0x10:
+            case 0x11:
+            case 0x12:
+            case 0x13:
+            case 0x14:
+            case 0x15:
+            case 0x16:
+            case 0x17:
+            case 0x18:
+            case 0x19:
+            case 0x1A:
+            case 0x1B:
+            case 0x1C:
+            case 0x1D:
+            case 0x1E:
+            case 0x1F:
+            case 0x20:
+            case 0x21:
+            case 0x22:
+            case 0x23:
+            case 0x24:
+            case 0x25:
+            case 0x26:
+            case 0x27:
+            case 0x28:
+            case 0x29:
+            case 0x2A:
+            case 0x2B:
+            case 0x2C:
+            case 0x2D:
+            case 0x2E:
+            case 0x2F:
+            case 0x30:
+            case 0x31:
+            case 0x32:
+            case 0x33:
+            case 0x34:
+            case 0x35:
+            case 0x36:
+            case 0x37:
+            case 0x38:
+            case 0x39:
+            case 0x3A:
+            case 0x3B:
+            case 0x3C:
+            case 0x3D:
+            case 0x3E:
+            case 0x3F:
+            case 0x40:
+            case 0x41:
+            case 0x42:
+            case 0x43:
+            case 0x44:
+            case 0x45:
+            case 0x46:
+            case 0x47:
+            case 0x48:
+            case 0x49:
+            case 0x4A:
+            case 0x4B:
+            case 0x4C:
+            case 0x4D:
+            case 0x4E:
+            case 0x4F:
+            case 0x50:
+            case 0x51:
+            case 0x52:
+            case 0x53:
+            case 0x54:
+            case 0x55:
+            case 0x56:
+            case 0x57:
+            case 0x58:
+            case 0x59:
+            case 0x5A:
+            case 0x5B:
+            case 0x5C:
+            case 0x5D:
+            case 0x5E:
+            case 0x5F:
+            case 0x60:
+            case 0x61:
+            case 0x62:
+            case 0x63:
+            case 0x64:
+            case 0x65:
+            case 0x66:
+            case 0x67:
+            case 0x68:
+            case 0x69:
+            case 0x6A:
+            case 0x6B:
+            case 0x6C:
+            case 0x6D:
+            case 0x6E:
+            case 0x6F:
+            case 0x70:
+            case 0x71:
+            case 0x72:
+            case 0x73:
+            case 0x74:
+            case 0x75:
+            case 0x76:
+            case 0x77:
+            case 0x78:
+            case 0x79:
+            case 0x7A:
+            case 0x7B:
+            case 0x7C:
+            case 0x7D:
+            case 0x7E:
+            case 0x7F:
+                return sax->number_unsigned(static_cast<number_unsigned_t>(current));
+
+            // fixmap
+            case 0x80:
+            case 0x81:
+            case 0x82:
+            case 0x83:
+            case 0x84:
+            case 0x85:
+            case 0x86:
+            case 0x87:
+            case 0x88:
+            case 0x89:
+            case 0x8A:
+            case 0x8B:
+            case 0x8C:
+            case 0x8D:
+            case 0x8E:
+            case 0x8F:
+                return get_msgpack_object(conditional_static_cast<std::size_t>(static_cast<unsigned int>(current) & 0x0Fu));
+
+            // fixarray
+            case 0x90:
+            case 0x91:
+            case 0x92:
+            case 0x93:
+            case 0x94:
+            case 0x95:
+            case 0x96:
+            case 0x97:
+            case 0x98:
+            case 0x99:
+            case 0x9A:
+            case 0x9B:
+            case 0x9C:
+            case 0x9D:
+            case 0x9E:
+            case 0x9F:
+                return get_msgpack_array(conditional_static_cast<std::size_t>(static_cast<unsigned int>(current) & 0x0Fu));
+
+            // fixstr
+            case 0xA0:
+            case 0xA1:
+            case 0xA2:
+            case 0xA3:
+            case 0xA4:
+            case 0xA5:
+            case 0xA6:
+            case 0xA7:
+            case 0xA8:
+            case 0xA9:
+            case 0xAA:
+            case 0xAB:
+            case 0xAC:
+            case 0xAD:
+            case 0xAE:
+            case 0xAF:
+            case 0xB0:
+            case 0xB1:
+            case 0xB2:
+            case 0xB3:
+            case 0xB4:
+            case 0xB5:
+            case 0xB6:
+            case 0xB7:
+            case 0xB8:
+            case 0xB9:
+            case 0xBA:
+            case 0xBB:
+            case 0xBC:
+            case 0xBD:
+            case 0xBE:
+            case 0xBF:
+            case 0xD9: // str 8
+            case 0xDA: // str 16
+            case 0xDB: // str 32
+            {
+                string_t s;
+                return get_msgpack_string(s) && sax->string(s);
+            }
+
+            case 0xC0: // nil
+                return sax->null();
+
+            case 0xC2: // false
+                return sax->boolean(false);
+
+            case 0xC3: // true
+                return sax->boolean(true);
+
+            case 0xC4: // bin 8
+            case 0xC5: // bin 16
+            case 0xC6: // bin 32
+            case 0xC7: // ext 8
+            case 0xC8: // ext 16
+            case 0xC9: // ext 32
+            case 0xD4: // fixext 1
+            case 0xD5: // fixext 2
+            case 0xD6: // fixext 4
+            case 0xD7: // fixext 8
+            case 0xD8: // fixext 16
+            {
+                binary_t b;
+                return get_msgpack_binary(b) && sax->binary(b);
+            }
+
+            case 0xCA: // float 32
+            {
+                float number{};
+                return get_number(input_format_t::msgpack, number) && sax->number_float(static_cast<number_float_t>(number), "");
+            }
+
+            case 0xCB: // float 64
+            {
+                double number{};
+                return get_number(input_format_t::msgpack, number) && sax->number_float(static_cast<number_float_t>(number), "");
+            }
+
+            case 0xCC: // uint 8
+            {
+                std::uint8_t number{};
+                return get_number(input_format_t::msgpack, number) && sax->number_unsigned(number);
+            }
+
+            case 0xCD: // uint 16
+            {
+                std::uint16_t number{};
+                return get_number(input_format_t::msgpack, number) && sax->number_unsigned(number);
+            }
+
+            case 0xCE: // uint 32
+            {
+                std::uint32_t number{};
+                return get_number(input_format_t::msgpack, number) && sax->number_unsigned(number);
+            }
+
+            case 0xCF: // uint 64
+            {
+                std::uint64_t number{};
+                return get_number(input_format_t::msgpack, number) && sax->number_unsigned(number);
+            }
+
+            case 0xD0: // int 8
+            {
+                std::int8_t number{};
+                return get_number(input_format_t::msgpack, number) && sax->number_integer(number);
+            }
+
+            case 0xD1: // int 16
+            {
+                std::int16_t number{};
+                return get_number(input_format_t::msgpack, number) && sax->number_integer(number);
+            }
+
+            case 0xD2: // int 32
+            {
+                std::int32_t number{};
+                return get_number(input_format_t::msgpack, number) && sax->number_integer(number);
+            }
+
+            case 0xD3: // int 64
+            {
+                std::int64_t number{};
+                return get_number(input_format_t::msgpack, number) && sax->number_integer(number);
+            }
+
+            case 0xDC: // array 16
+            {
+                std::uint16_t len{};
+                return get_number(input_format_t::msgpack, len) && get_msgpack_array(static_cast<std::size_t>(len));
+            }
+
+            case 0xDD: // array 32
+            {
+                std::uint32_t len{};
+                return get_number(input_format_t::msgpack, len) && get_msgpack_array(conditional_static_cast<std::size_t>(len));
+            }
+
+            case 0xDE: // map 16
+            {
+                std::uint16_t len{};
+                return get_number(input_format_t::msgpack, len) && get_msgpack_object(static_cast<std::size_t>(len));
+            }
+
+            case 0xDF: // map 32
+            {
+                std::uint32_t len{};
+                return get_number(input_format_t::msgpack, len) && get_msgpack_object(conditional_static_cast<std::size_t>(len));
+            }
+
+            // negative fixint
+            case 0xE0:
+            case 0xE1:
+            case 0xE2:
+            case 0xE3:
+            case 0xE4:
+            case 0xE5:
+            case 0xE6:
+            case 0xE7:
+            case 0xE8:
+            case 0xE9:
+            case 0xEA:
+            case 0xEB:
+            case 0xEC:
+            case 0xED:
+            case 0xEE:
+            case 0xEF:
+            case 0xF0:
+            case 0xF1:
+            case 0xF2:
+            case 0xF3:
+            case 0xF4:
+            case 0xF5:
+            case 0xF6:
+            case 0xF7:
+            case 0xF8:
+            case 0xF9:
+            case 0xFA:
+            case 0xFB:
+            case 0xFC:
+            case 0xFD:
+            case 0xFE:
+            case 0xFF:
+                return sax->number_integer(static_cast<std::int8_t>(current));
+
+            default: // anything else
+            {
+                auto last_token = get_token_string();
+                return sax->parse_error(chars_read, last_token, parse_error::create(112, chars_read,
+                                        exception_message(input_format_t::msgpack, concat("invalid byte: 0x", last_token), "value"), nullptr));
+            }
+        }
+    }
+
+    /*!
+    @brief reads a MessagePack string
+
+    This function first reads starting bytes to determine the expected
+    string length and then copies this number of bytes into a string.
+
+    @param[out] result  created string
+
+    @return whether string creation completed
+    */
+    bool get_msgpack_string(string_t& result)
+    {
+        if (JSON_HEDLEY_UNLIKELY(!unexpect_eof(input_format_t::msgpack, "string")))
+        {
+            return false;
+        }
+
+        switch (current)
+        {
+            // fixstr
+            case 0xA0:
+            case 0xA1:
+            case 0xA2:
+            case 0xA3:
+            case 0xA4:
+            case 0xA5:
+            case 0xA6:
+            case 0xA7:
+            case 0xA8:
+            case 0xA9:
+            case 0xAA:
+            case 0xAB:
+            case 0xAC:
+            case 0xAD:
+            case 0xAE:
+            case 0xAF:
+            case 0xB0:
+            case 0xB1:
+            case 0xB2:
+            case 0xB3:
+            case 0xB4:
+            case 0xB5:
+            case 0xB6:
+            case 0xB7:
+            case 0xB8:
+            case 0xB9:
+            case 0xBA:
+            case 0xBB:
+            case 0xBC:
+            case 0xBD:
+            case 0xBE:
+            case 0xBF:
+            {
+                return get_string(input_format_t::msgpack, static_cast<unsigned int>(current) & 0x1Fu, result);
+            }
+
+            case 0xD9: // str 8
+            {
+                std::uint8_t len{};
+                return get_number(input_format_t::msgpack, len) && get_string(input_format_t::msgpack, len, result);
+            }
+
+            case 0xDA: // str 16
+            {
+                std::uint16_t len{};
+                return get_number(input_format_t::msgpack, len) && get_string(input_format_t::msgpack, len, result);
+            }
+
+            case 0xDB: // str 32
+            {
+                std::uint32_t len{};
+                return get_number(input_format_t::msgpack, len) && get_string(input_format_t::msgpack, len, result);
+            }
+
+            default:
+            {
+                auto last_token = get_token_string();
+                return sax->parse_error(chars_read, last_token, parse_error::create(113, chars_read,
+                                        exception_message(input_format_t::msgpack, concat("expected length specification (0xA0-0xBF, 0xD9-0xDB); last byte: 0x", last_token), "string"), nullptr));
+            }
+        }
+    }
+
+    /*!
+    @brief reads a MessagePack byte array
+
+    This function first reads starting bytes to determine the expected
+    byte array length and then copies this number of bytes into a byte array.
+
+    @param[out] result  created byte array
+
+    @return whether byte array creation completed
+    */
+    bool get_msgpack_binary(binary_t& result)
+    {
+        // helper function to set the subtype
+        auto assign_and_return_true = [&result](std::int8_t subtype)
+        {
+            result.set_subtype(static_cast<std::uint8_t>(subtype));
+            return true;
+        };
+
+        switch (current)
+        {
+            case 0xC4: // bin 8
+            {
+                std::uint8_t len{};
+                return get_number(input_format_t::msgpack, len) &&
+                       get_binary(input_format_t::msgpack, len, result);
+            }
+
+            case 0xC5: // bin 16
+            {
+                std::uint16_t len{};
+                return get_number(input_format_t::msgpack, len) &&
+                       get_binary(input_format_t::msgpack, len, result);
+            }
+
+            case 0xC6: // bin 32
+            {
+                std::uint32_t len{};
+                return get_number(input_format_t::msgpack, len) &&
+                       get_binary(input_format_t::msgpack, len, result);
+            }
+
+            case 0xC7: // ext 8
+            {
+                std::uint8_t len{};
+                std::int8_t subtype{};
+                return get_number(input_format_t::msgpack, len) &&
+                       get_number(input_format_t::msgpack, subtype) &&
+                       get_binary(input_format_t::msgpack, len, result) &&
+                       assign_and_return_true(subtype);
+            }
+
+            case 0xC8: // ext 16
+            {
+                std::uint16_t len{};
+                std::int8_t subtype{};
+                return get_number(input_format_t::msgpack, len) &&
+                       get_number(input_format_t::msgpack, subtype) &&
+                       get_binary(input_format_t::msgpack, len, result) &&
+                       assign_and_return_true(subtype);
+            }
+
+            case 0xC9: // ext 32
+            {
+                std::uint32_t len{};
+                std::int8_t subtype{};
+                return get_number(input_format_t::msgpack, len) &&
+                       get_number(input_format_t::msgpack, subtype) &&
+                       get_binary(input_format_t::msgpack, len, result) &&
+                       assign_and_return_true(subtype);
+            }
+
+            case 0xD4: // fixext 1
+            {
+                std::int8_t subtype{};
+                return get_number(input_format_t::msgpack, subtype) &&
+                       get_binary(input_format_t::msgpack, 1, result) &&
+                       assign_and_return_true(subtype);
+            }
+
+            case 0xD5: // fixext 2
+            {
+                std::int8_t subtype{};
+                return get_number(input_format_t::msgpack, subtype) &&
+                       get_binary(input_format_t::msgpack, 2, result) &&
+                       assign_and_return_true(subtype);
+            }
+
+            case 0xD6: // fixext 4
+            {
+                std::int8_t subtype{};
+                return get_number(input_format_t::msgpack, subtype) &&
+                       get_binary(input_format_t::msgpack, 4, result) &&
+                       assign_and_return_true(subtype);
+            }
+
+            case 0xD7: // fixext 8
+            {
+                std::int8_t subtype{};
+                return get_number(input_format_t::msgpack, subtype) &&
+                       get_binary(input_format_t::msgpack, 8, result) &&
+                       assign_and_return_true(subtype);
+            }
+
+            case 0xD8: // fixext 16
+            {
+                std::int8_t subtype{};
+                return get_number(input_format_t::msgpack, subtype) &&
+                       get_binary(input_format_t::msgpack, 16, result) &&
+                       assign_and_return_true(subtype);
+            }
+
+            default:           // LCOV_EXCL_LINE
+                return false;  // LCOV_EXCL_LINE
+        }
+    }
+
+    /*!
+    @param[in] len  the length of the array
+    @return whether array creation completed
+    */
+    bool get_msgpack_array(const std::size_t len)
+    {
+        if (JSON_HEDLEY_UNLIKELY(!sax->start_array(len)))
+        {
+            return false;
+        }
+
+        for (std::size_t i = 0; i < len; ++i)
+        {
+            if (JSON_HEDLEY_UNLIKELY(!parse_msgpack_internal()))
+            {
+                return false;
+            }
+        }
+
+        return sax->end_array();
+    }
+
+    /*!
+    @param[in] len  the length of the object
+    @return whether object creation completed
+    */
+    bool get_msgpack_object(const std::size_t len)
+    {
+        if (JSON_HEDLEY_UNLIKELY(!sax->start_object(len)))
+        {
+            return false;
+        }
+
+        string_t key;
+        for (std::size_t i = 0; i < len; ++i)
+        {
+            get();
+            if (JSON_HEDLEY_UNLIKELY(!get_msgpack_string(key) || !sax->key(key)))
+            {
+                return false;
+            }
+
+            if (JSON_HEDLEY_UNLIKELY(!parse_msgpack_internal()))
+            {
+                return false;
+            }
+            key.clear();
+        }
+
+        return sax->end_object();
+    }
+
+    ////////////
+    // UBJSON //
+    ////////////
+
+    /*!
+    @param[in] get_char  whether a new character should be retrieved from the
+                         input (true, default) or whether the last read
+                         character should be considered instead
+
+    @return whether a valid UBJSON value was passed to the SAX parser
+    */
+    bool parse_ubjson_internal(const bool get_char = true)
+    {
+        return get_ubjson_value(get_char ? get_ignore_noop() : current);
+    }
+
+    /*!
+    @brief reads a UBJSON string
+
+    This function is either called after reading the 'S' byte explicitly
+    indicating a string, or in case of an object key where the 'S' byte can be
+    left out.
+
+    @param[out] result   created string
+    @param[in] get_char  whether a new character should be retrieved from the
+                         input (true, default) or whether the last read
+                         character should be considered instead
+
+    @return whether string creation completed
+    */
+    bool get_ubjson_string(string_t& result, const bool get_char = true)
+    {
+        if (get_char)
+        {
+            get();  // TODO(niels): may we ignore N here?
+        }
+
+        if (JSON_HEDLEY_UNLIKELY(!unexpect_eof(input_format, "value")))
+        {
+            return false;
+        }
+
+        switch (current)
+        {
+            case 'U':
+            {
+                std::uint8_t len{};
+                return get_number(input_format, len) && get_string(input_format, len, result);
+            }
+
+            case 'i':
+            {
+                std::int8_t len{};
+                return get_number(input_format, len) && get_string(input_format, len, result);
+            }
+
+            case 'I':
+            {
+                std::int16_t len{};
+                return get_number(input_format, len) && get_string(input_format, len, result);
+            }
+
+            case 'l':
+            {
+                std::int32_t len{};
+                return get_number(input_format, len) && get_string(input_format, len, result);
+            }
+
+            case 'L':
+            {
+                std::int64_t len{};
+                return get_number(input_format, len) && get_string(input_format, len, result);
+            }
+
+            case 'u':
+            {
+                if (input_format != input_format_t::bjdata)
+                {
+                    break;
+                }
+                std::uint16_t len{};
+                return get_number(input_format, len) && get_string(input_format, len, result);
+            }
+
+            case 'm':
+            {
+                if (input_format != input_format_t::bjdata)
+                {
+                    break;
+                }
+                std::uint32_t len{};
+                return get_number(input_format, len) && get_string(input_format, len, result);
+            }
+
+            case 'M':
+            {
+                if (input_format != input_format_t::bjdata)
+                {
+                    break;
+                }
+                std::uint64_t len{};
+                return get_number(input_format, len) && get_string(input_format, len, result);
+            }
+
+            default:
+                break;
+        }
+        auto last_token = get_token_string();
+        std::string message;
+
+        if (input_format != input_format_t::bjdata)
+        {
+            message = "expected length type specification (U, i, I, l, L); last byte: 0x" + last_token;
+        }
+        else
+        {
+            message = "expected length type specification (U, i, u, I, m, l, M, L); last byte: 0x" + last_token;
+        }
+        return sax->parse_error(chars_read, last_token, parse_error::create(113, chars_read, exception_message(input_format, message, "string"), nullptr));
+    }
+
+    /*!
+    @param[out] dim  an integer vector storing the ND array dimensions
+    @return whether reading ND array size vector is successful
+    */
+    bool get_ubjson_ndarray_size(std::vector<size_t>& dim)
+    {
+        std::pair<std::size_t, char_int_type> size_and_type;
+        size_t dimlen = 0;
+        bool no_ndarray = true;
+
+        if (JSON_HEDLEY_UNLIKELY(!get_ubjson_size_type(size_and_type, no_ndarray)))
+        {
+            return false;
+        }
+
+        if (size_and_type.first != npos)
+        {
+            if (size_and_type.second != 0)
+            {
+                if (size_and_type.second != 'N')
+                {
+                    for (std::size_t i = 0; i < size_and_type.first; ++i)
+                    {
+                        if (JSON_HEDLEY_UNLIKELY(!get_ubjson_size_value(dimlen, no_ndarray, size_and_type.second)))
+                        {
+                            return false;
+                        }
+                        dim.push_back(dimlen);
+                    }
+                }
+            }
+            else
+            {
+                for (std::size_t i = 0; i < size_and_type.first; ++i)
+                {
+                    if (JSON_HEDLEY_UNLIKELY(!get_ubjson_size_value(dimlen, no_ndarray)))
+                    {
+                        return false;
+                    }
+                    dim.push_back(dimlen);
+                }
+            }
+        }
+        else
+        {
+            while (current != ']')
+            {
+                if (JSON_HEDLEY_UNLIKELY(!get_ubjson_size_value(dimlen, no_ndarray, current)))
+                {
+                    return false;
+                }
+                dim.push_back(dimlen);
+                get_ignore_noop();
+            }
+        }
+        return true;
+    }
+
+    /*!
+    @param[out] result  determined size
+    @param[in,out] is_ndarray  for input, `true` means already inside an ndarray vector
+                               or ndarray dimension is not allowed; `false` means ndarray
+                               is allowed; for output, `true` means an ndarray is found;
+                               is_ndarray can only return `true` when its initial value
+                               is `false`
+    @param[in] prefix  type marker if already read, otherwise set to 0
+
+    @return whether size determination completed
+    */
+    bool get_ubjson_size_value(std::size_t& result, bool& is_ndarray, char_int_type prefix = 0)
+    {
+        if (prefix == 0)
+        {
+            prefix = get_ignore_noop();
+        }
+
+        switch (prefix)
+        {
+            case 'U':
+            {
+                std::uint8_t number{};
+                if (JSON_HEDLEY_UNLIKELY(!get_number(input_format, number)))
+                {
+                    return false;
+                }
+                result = static_cast<std::size_t>(number);
+                return true;
+            }
+
+            case 'i':
+            {
+                std::int8_t number{};
+                if (JSON_HEDLEY_UNLIKELY(!get_number(input_format, number)))
+                {
+                    return false;
+                }
+                if (number < 0)
+                {
+                    return sax->parse_error(chars_read, get_token_string(), parse_error::create(113, chars_read,
+                                            exception_message(input_format, "count in an optimized container must be positive", "size"), nullptr));
+                }
+                result = static_cast<std::size_t>(number); // NOLINT(bugprone-signed-char-misuse,cert-str34-c): number is not a char
+                return true;
+            }
+
+            case 'I':
+            {
+                std::int16_t number{};
+                if (JSON_HEDLEY_UNLIKELY(!get_number(input_format, number)))
+                {
+                    return false;
+                }
+                if (number < 0)
+                {
+                    return sax->parse_error(chars_read, get_token_string(), parse_error::create(113, chars_read,
+                                            exception_message(input_format, "count in an optimized container must be positive", "size"), nullptr));
+                }
+                result = static_cast<std::size_t>(number);
+                return true;
+            }
+
+            case 'l':
+            {
+                std::int32_t number{};
+                if (JSON_HEDLEY_UNLIKELY(!get_number(input_format, number)))
+                {
+                    return false;
+                }
+                if (number < 0)
+                {
+                    return sax->parse_error(chars_read, get_token_string(), parse_error::create(113, chars_read,
+                                            exception_message(input_format, "count in an optimized container must be positive", "size"), nullptr));
+                }
+                result = static_cast<std::size_t>(number);
+                return true;
+            }
+
+            case 'L':
+            {
+                std::int64_t number{};
+                if (JSON_HEDLEY_UNLIKELY(!get_number(input_format, number)))
+                {
+                    return false;
+                }
+                if (number < 0)
+                {
+                    return sax->parse_error(chars_read, get_token_string(), parse_error::create(113, chars_read,
+                                            exception_message(input_format, "count in an optimized container must be positive", "size"), nullptr));
+                }
+                if (!value_in_range_of<std::size_t>(number))
+                {
+                    return sax->parse_error(chars_read, get_token_string(), out_of_range::create(408,
+                                            exception_message(input_format, "integer value overflow", "size"), nullptr));
+                }
+                result = static_cast<std::size_t>(number);
+                return true;
+            }
+
+            case 'u':
+            {
+                if (input_format != input_format_t::bjdata)
+                {
+                    break;
+                }
+                std::uint16_t number{};
+                if (JSON_HEDLEY_UNLIKELY(!get_number(input_format, number)))
+                {
+                    return false;
+                }
+                result = static_cast<std::size_t>(number);
+                return true;
+            }
+
+            case 'm':
+            {
+                if (input_format != input_format_t::bjdata)
+                {
+                    break;
+                }
+                std::uint32_t number{};
+                if (JSON_HEDLEY_UNLIKELY(!get_number(input_format, number)))
+                {
+                    return false;
+                }
+                result = conditional_static_cast<std::size_t>(number);
+                return true;
+            }
+
+            case 'M':
+            {
+                if (input_format != input_format_t::bjdata)
+                {
+                    break;
+                }
+                std::uint64_t number{};
+                if (JSON_HEDLEY_UNLIKELY(!get_number(input_format, number)))
+                {
+                    return false;
+                }
+                if (!value_in_range_of<std::size_t>(number))
+                {
+                    return sax->parse_error(chars_read, get_token_string(), out_of_range::create(408,
+                                            exception_message(input_format, "integer value overflow", "size"), nullptr));
+                }
+                result = detail::conditional_static_cast<std::size_t>(number);
+                return true;
+            }
+
+            case '[':
+            {
+                if (input_format != input_format_t::bjdata)
+                {
+                    break;
+                }
+                if (is_ndarray) // ndarray dimensional vector can only contain integers, and can not embed another array
+                {
+                    return sax->parse_error(chars_read, get_token_string(), parse_error::create(113, chars_read, exception_message(input_format, "ndarray dimensional vector is not allowed", "size"), nullptr));
+                }
+                std::vector<size_t> dim;
+                if (JSON_HEDLEY_UNLIKELY(!get_ubjson_ndarray_size(dim)))
+                {
+                    return false;
+                }
+                if (dim.size() == 1 || (dim.size() == 2 && dim.at(0) == 1)) // return normal array size if 1D row vector
+                {
+                    result = dim.at(dim.size() - 1);
+                    return true;
+                }
+                if (!dim.empty())  // if ndarray, convert to an object in JData annotated array format
+                {
+                    for (auto i : dim) // test if any dimension in an ndarray is 0, if so, return a 1D empty container
+                    {
+                        if ( i == 0 )
+                        {
+                            result = 0;
+                            return true;
+                        }
+                    }
+
+                    string_t key = "_ArraySize_";
+                    if (JSON_HEDLEY_UNLIKELY(!sax->start_object(3) || !sax->key(key) || !sax->start_array(dim.size())))
+                    {
+                        return false;
+                    }
+                    result = 1;
+                    for (auto i : dim)
+                    {
+                        result *= i;
+                        if (result == 0 || result == npos) // because dim elements shall not have zeros, result = 0 means overflow happened; it also can't be npos as it is used to initialize size in get_ubjson_size_type()
+                        {
+                            return sax->parse_error(chars_read, get_token_string(), out_of_range::create(408, exception_message(input_format, "excessive ndarray size caused overflow", "size"), nullptr));
+                        }
+                        if (JSON_HEDLEY_UNLIKELY(!sax->number_unsigned(static_cast<number_unsigned_t>(i))))
+                        {
+                            return false;
+                        }
+                    }
+                    is_ndarray = true;
+                    return sax->end_array();
+                }
+                result = 0;
+                return true;
+            }
+
+            default:
+                break;
+        }
+        auto last_token = get_token_string();
+        std::string message;
+
+        if (input_format != input_format_t::bjdata)
+        {
+            message = "expected length type specification (U, i, I, l, L) after '#'; last byte: 0x" + last_token;
+        }
+        else
+        {
+            message = "expected length type specification (U, i, u, I, m, l, M, L) after '#'; last byte: 0x" + last_token;
+        }
+        return sax->parse_error(chars_read, last_token, parse_error::create(113, chars_read, exception_message(input_format, message, "size"), nullptr));
+    }
+
+    /*!
+    @brief determine the type and size for a container
+
+    In the optimized UBJSON format, a type and a size can be provided to allow
+    for a more compact representation.
+
+    @param[out] result  pair of the size and the type
+    @param[in] inside_ndarray  whether the parser is parsing an ND array dimensional vector
+
+    @return whether pair creation completed
+    */
+    bool get_ubjson_size_type(std::pair<std::size_t, char_int_type>& result, bool inside_ndarray = false)
+    {
+        result.first = npos; // size
+        result.second = 0; // type
+        bool is_ndarray = false;
+
+        get_ignore_noop();
+
+        if (current == '$')
+        {
+            result.second = get();  // must not ignore 'N', because 'N' maybe the type
+            if (input_format == input_format_t::bjdata
+                    && JSON_HEDLEY_UNLIKELY(std::binary_search(bjd_optimized_type_markers.begin(), bjd_optimized_type_markers.end(), result.second)))
+            {
+                auto last_token = get_token_string();
+                return sax->parse_error(chars_read, last_token, parse_error::create(112, chars_read,
+                                        exception_message(input_format, concat("marker 0x", last_token, " is not a permitted optimized array type"), "type"), nullptr));
+            }
+
+            if (JSON_HEDLEY_UNLIKELY(!unexpect_eof(input_format, "type")))
+            {
+                return false;
+            }
+
+            get_ignore_noop();
+            if (JSON_HEDLEY_UNLIKELY(current != '#'))
+            {
+                if (JSON_HEDLEY_UNLIKELY(!unexpect_eof(input_format, "value")))
+                {
+                    return false;
+                }
+                auto last_token = get_token_string();
+                return sax->parse_error(chars_read, last_token, parse_error::create(112, chars_read,
+                                        exception_message(input_format, concat("expected '#' after type information; last byte: 0x", last_token), "size"), nullptr));
+            }
+
+            const bool is_error = get_ubjson_size_value(result.first, is_ndarray);
+            if (input_format == input_format_t::bjdata && is_ndarray)
+            {
+                if (inside_ndarray)
+                {
+                    return sax->parse_error(chars_read, get_token_string(), parse_error::create(112, chars_read,
+                                            exception_message(input_format, "ndarray can not be recursive", "size"), nullptr));
+                }
+                result.second |= (1 << 8); // use bit 8 to indicate ndarray, all UBJSON and BJData markers should be ASCII letters
+            }
+            return is_error;
+        }
+
+        if (current == '#')
+        {
+            const bool is_error = get_ubjson_size_value(result.first, is_ndarray);
+            if (input_format == input_format_t::bjdata && is_ndarray)
+            {
+                return sax->parse_error(chars_read, get_token_string(), parse_error::create(112, chars_read,
+                                        exception_message(input_format, "ndarray requires both type and size", "size"), nullptr));
+            }
+            return is_error;
+        }
+
+        return true;
+    }
+
+    /*!
+    @param prefix  the previously read or set type prefix
+    @return whether value creation completed
+    */
+    bool get_ubjson_value(const char_int_type prefix)
+    {
+        switch (prefix)
+        {
+            case std::char_traits<char_type>::eof():  // EOF
+                return unexpect_eof(input_format, "value");
+
+            case 'T':  // true
+                return sax->boolean(true);
+            case 'F':  // false
+                return sax->boolean(false);
+
+            case 'Z':  // null
+                return sax->null();
+
+            case 'U':
+            {
+                std::uint8_t number{};
+                return get_number(input_format, number) && sax->number_unsigned(number);
+            }
+
+            case 'i':
+            {
+                std::int8_t number{};
+                return get_number(input_format, number) && sax->number_integer(number);
+            }
+
+            case 'I':
+            {
+                std::int16_t number{};
+                return get_number(input_format, number) && sax->number_integer(number);
+            }
+
+            case 'l':
+            {
+                std::int32_t number{};
+                return get_number(input_format, number) && sax->number_integer(number);
+            }
+
+            case 'L':
+            {
+                std::int64_t number{};
+                return get_number(input_format, number) && sax->number_integer(number);
+            }
+
+            case 'u':
+            {
+                if (input_format != input_format_t::bjdata)
+                {
+                    break;
+                }
+                std::uint16_t number{};
+                return get_number(input_format, number) && sax->number_unsigned(number);
+            }
+
+            case 'm':
+            {
+                if (input_format != input_format_t::bjdata)
+                {
+                    break;
+                }
+                std::uint32_t number{};
+                return get_number(input_format, number) && sax->number_unsigned(number);
+            }
+
+            case 'M':
+            {
+                if (input_format != input_format_t::bjdata)
+                {
+                    break;
+                }
+                std::uint64_t number{};
+                return get_number(input_format, number) && sax->number_unsigned(number);
+            }
+
+            case 'h':
+            {
+                if (input_format != input_format_t::bjdata)
+                {
+                    break;
+                }
+                const auto byte1_raw = get();
+                if (JSON_HEDLEY_UNLIKELY(!unexpect_eof(input_format, "number")))
+                {
+                    return false;
+                }
+                const auto byte2_raw = get();
+                if (JSON_HEDLEY_UNLIKELY(!unexpect_eof(input_format, "number")))
+                {
+                    return false;
+                }
+
+                const auto byte1 = static_cast<unsigned char>(byte1_raw);
+                const auto byte2 = static_cast<unsigned char>(byte2_raw);
+
+                // code from RFC 7049, Appendix D, Figure 3:
+                // As half-precision floating-point numbers were only added
+                // to IEEE 754 in 2008, today's programming platforms often
+                // still only have limited support for them. It is very
+                // easy to include at least decoding support for them even
+                // without such support. An example of a small decoder for
+                // half-precision floating-point numbers in the C language
+                // is shown in Fig. 3.
+                const auto half = static_cast<unsigned int>((byte2 << 8u) + byte1);
+                const double val = [&half]
+                {
+                    const int exp = (half >> 10u) & 0x1Fu;
+                    const unsigned int mant = half & 0x3FFu;
+                    JSON_ASSERT(0 <= exp&& exp <= 32);
+                    JSON_ASSERT(mant <= 1024);
+                    switch (exp)
+                    {
+                        case 0:
+                            return std::ldexp(mant, -24);
+                        case 31:
+                            return (mant == 0)
+                            ? std::numeric_limits<double>::infinity()
+                            : std::numeric_limits<double>::quiet_NaN();
+                        default:
+                            return std::ldexp(mant + 1024, exp - 25);
+                    }
+                }();
+                return sax->number_float((half & 0x8000u) != 0
+                                         ? static_cast<number_float_t>(-val)
+                                         : static_cast<number_float_t>(val), "");
+            }
+
+            case 'd':
+            {
+                float number{};
+                return get_number(input_format, number) && sax->number_float(static_cast<number_float_t>(number), "");
+            }
+
+            case 'D':
+            {
+                double number{};
+                return get_number(input_format, number) && sax->number_float(static_cast<number_float_t>(number), "");
+            }
+
+            case 'H':
+            {
+                return get_ubjson_high_precision_number();
+            }
+
+            case 'C':  // char
+            {
+                get();
+                if (JSON_HEDLEY_UNLIKELY(!unexpect_eof(input_format, "char")))
+                {
+                    return false;
+                }
+                if (JSON_HEDLEY_UNLIKELY(current > 127))
+                {
+                    auto last_token = get_token_string();
+                    return sax->parse_error(chars_read, last_token, parse_error::create(113, chars_read,
+                                            exception_message(input_format, concat("byte after 'C' must be in range 0x00..0x7F; last byte: 0x", last_token), "char"), nullptr));
+                }
+                string_t s(1, static_cast<typename string_t::value_type>(current));
+                return sax->string(s);
+            }
+
+            case 'S':  // string
+            {
+                string_t s;
+                return get_ubjson_string(s) && sax->string(s);
+            }
+
+            case '[':  // array
+                return get_ubjson_array();
+
+            case '{':  // object
+                return get_ubjson_object();
+
+            default: // anything else
+                break;
+        }
+        auto last_token = get_token_string();
+        return sax->parse_error(chars_read, last_token, parse_error::create(112, chars_read, exception_message(input_format, "invalid byte: 0x" + last_token, "value"), nullptr));
+    }
+
+    /*!
+    @return whether array creation completed
+    */
+    bool get_ubjson_array()
+    {
+        std::pair<std::size_t, char_int_type> size_and_type;
+        if (JSON_HEDLEY_UNLIKELY(!get_ubjson_size_type(size_and_type)))
+        {
+            return false;
+        }
+
+        // if bit-8 of size_and_type.second is set to 1, encode bjdata ndarray as an object in JData annotated array format (https://github.com/NeuroJSON/jdata):
+        // {"_ArrayType_" : "typeid", "_ArraySize_" : [n1, n2, ...], "_ArrayData_" : [v1, v2, ...]}
+
+        if (input_format == input_format_t::bjdata && size_and_type.first != npos && (size_and_type.second & (1 << 8)) != 0)
+        {
+            size_and_type.second &= ~(static_cast<char_int_type>(1) << 8);  // use bit 8 to indicate ndarray, here we remove the bit to restore the type marker
+            auto it = std::lower_bound(bjd_types_map.begin(), bjd_types_map.end(), size_and_type.second, [](const bjd_type & p, char_int_type t)
+            {
+                return p.first < t;
+            });
+            string_t key = "_ArrayType_";
+            if (JSON_HEDLEY_UNLIKELY(it == bjd_types_map.end() || it->first != size_and_type.second))
+            {
+                auto last_token = get_token_string();
+                return sax->parse_error(chars_read, last_token, parse_error::create(112, chars_read,
+                                        exception_message(input_format, "invalid byte: 0x" + last_token, "type"), nullptr));
+            }
+
+            string_t type = it->second; // sax->string() takes a reference
+            if (JSON_HEDLEY_UNLIKELY(!sax->key(key) || !sax->string(type)))
+            {
+                return false;
+            }
+
+            if (size_and_type.second == 'C')
+            {
+                size_and_type.second = 'U';
+            }
+
+            key = "_ArrayData_";
+            if (JSON_HEDLEY_UNLIKELY(!sax->key(key) || !sax->start_array(size_and_type.first) ))
+            {
+                return false;
+            }
+
+            for (std::size_t i = 0; i < size_and_type.first; ++i)
+            {
+                if (JSON_HEDLEY_UNLIKELY(!get_ubjson_value(size_and_type.second)))
+                {
+                    return false;
+                }
+            }
+
+            return (sax->end_array() && sax->end_object());
+        }
+
+        if (size_and_type.first != npos)
+        {
+            if (JSON_HEDLEY_UNLIKELY(!sax->start_array(size_and_type.first)))
+            {
+                return false;
+            }
+
+            if (size_and_type.second != 0)
+            {
+                if (size_and_type.second != 'N')
+                {
+                    for (std::size_t i = 0; i < size_and_type.first; ++i)
+                    {
+                        if (JSON_HEDLEY_UNLIKELY(!get_ubjson_value(size_and_type.second)))
+                        {
+                            return false;
+                        }
+                    }
+                }
+            }
+            else
+            {
+                for (std::size_t i = 0; i < size_and_type.first; ++i)
+                {
+                    if (JSON_HEDLEY_UNLIKELY(!parse_ubjson_internal()))
+                    {
+                        return false;
+                    }
+                }
+            }
+        }
+        else
+        {
+            if (JSON_HEDLEY_UNLIKELY(!sax->start_array(static_cast<std::size_t>(-1))))
+            {
+                return false;
+            }
+
+            while (current != ']')
+            {
+                if (JSON_HEDLEY_UNLIKELY(!parse_ubjson_internal(false)))
+                {
+                    return false;
+                }
+                get_ignore_noop();
+            }
+        }
+
+        return sax->end_array();
+    }
+
+    /*!
+    @return whether object creation completed
+    */
+    bool get_ubjson_object()
+    {
+        std::pair<std::size_t, char_int_type> size_and_type;
+        if (JSON_HEDLEY_UNLIKELY(!get_ubjson_size_type(size_and_type)))
+        {
+            return false;
+        }
+
+        // do not accept ND-array size in objects in BJData
+        if (input_format == input_format_t::bjdata && size_and_type.first != npos && (size_and_type.second & (1 << 8)) != 0)
+        {
+            auto last_token = get_token_string();
+            return sax->parse_error(chars_read, last_token, parse_error::create(112, chars_read,
+                                    exception_message(input_format, "BJData object does not support ND-array size in optimized format", "object"), nullptr));
+        }
+
+        string_t key;
+        if (size_and_type.first != npos)
+        {
+            if (JSON_HEDLEY_UNLIKELY(!sax->start_object(size_and_type.first)))
+            {
+                return false;
+            }
+
+            if (size_and_type.second != 0)
+            {
+                for (std::size_t i = 0; i < size_and_type.first; ++i)
+                {
+                    if (JSON_HEDLEY_UNLIKELY(!get_ubjson_string(key) || !sax->key(key)))
+                    {
+                        return false;
+                    }
+                    if (JSON_HEDLEY_UNLIKELY(!get_ubjson_value(size_and_type.second)))
+                    {
+                        return false;
+                    }
+                    key.clear();
+                }
+            }
+            else
+            {
+                for (std::size_t i = 0; i < size_and_type.first; ++i)
+                {
+                    if (JSON_HEDLEY_UNLIKELY(!get_ubjson_string(key) || !sax->key(key)))
+                    {
+                        return false;
+                    }
+                    if (JSON_HEDLEY_UNLIKELY(!parse_ubjson_internal()))
+                    {
+                        return false;
+                    }
+                    key.clear();
+                }
+            }
+        }
+        else
+        {
+            if (JSON_HEDLEY_UNLIKELY(!sax->start_object(static_cast<std::size_t>(-1))))
+            {
+                return false;
+            }
+
+            while (current != '}')
+            {
+                if (JSON_HEDLEY_UNLIKELY(!get_ubjson_string(key, false) || !sax->key(key)))
+                {
+                    return false;
+                }
+                if (JSON_HEDLEY_UNLIKELY(!parse_ubjson_internal()))
+                {
+                    return false;
+                }
+                get_ignore_noop();
+                key.clear();
+            }
+        }
+
+        return sax->end_object();
+    }
+
+    // Note, no reader for UBJSON binary types is implemented because they do
+    // not exist
+
+    bool get_ubjson_high_precision_number()
+    {
+        // get size of following number string
+        std::size_t size{};
+        bool no_ndarray = true;
+        auto res = get_ubjson_size_value(size, no_ndarray);
+        if (JSON_HEDLEY_UNLIKELY(!res))
+        {
+            return res;
+        }
+
+        // get number string
+        std::vector<char> number_vector;
+        for (std::size_t i = 0; i < size; ++i)
+        {
+            get();
+            if (JSON_HEDLEY_UNLIKELY(!unexpect_eof(input_format, "number")))
+            {
+                return false;
+            }
+            number_vector.push_back(static_cast<char>(current));
+        }
+
+        // parse number string
+        using ia_type = decltype(detail::input_adapter(number_vector));
+        auto number_lexer = detail::lexer<BasicJsonType, ia_type>(detail::input_adapter(number_vector), false);
+        const auto result_number = number_lexer.scan();
+        const auto number_string = number_lexer.get_token_string();
+        const auto result_remainder = number_lexer.scan();
+
+        using token_type = typename detail::lexer_base<BasicJsonType>::token_type;
+
+        if (JSON_HEDLEY_UNLIKELY(result_remainder != token_type::end_of_input))
+        {
+            return sax->parse_error(chars_read, number_string, parse_error::create(115, chars_read,
+                                    exception_message(input_format, concat("invalid number text: ", number_lexer.get_token_string()), "high-precision number"), nullptr));
+        }
+
+        switch (result_number)
+        {
+            case token_type::value_integer:
+                return sax->number_integer(number_lexer.get_number_integer());
+            case token_type::value_unsigned:
+                return sax->number_unsigned(number_lexer.get_number_unsigned());
+            case token_type::value_float:
+                return sax->number_float(number_lexer.get_number_float(), std::move(number_string));
+            case token_type::uninitialized:
+            case token_type::literal_true:
+            case token_type::literal_false:
+            case token_type::literal_null:
+            case token_type::value_string:
+            case token_type::begin_array:
+            case token_type::begin_object:
+            case token_type::end_array:
+            case token_type::end_object:
+            case token_type::name_separator:
+            case token_type::value_separator:
+            case token_type::parse_error:
+            case token_type::end_of_input:
+            case token_type::literal_or_value:
+            default:
+                return sax->parse_error(chars_read, number_string, parse_error::create(115, chars_read,
+                                        exception_message(input_format, concat("invalid number text: ", number_lexer.get_token_string()), "high-precision number"), nullptr));
+        }
+    }
+
+    ///////////////////////
+    // Utility functions //
+    ///////////////////////
+
+    /*!
+    @brief get next character from the input
+
+    This function provides the interface to the used input adapter. It does
+    not throw in case the input reached EOF, but returns a -'ve valued
+    `std::char_traits<char_type>::eof()` in that case.
+
+    @return character read from the input
+    */
+    char_int_type get()
+    {
+        ++chars_read;
+        return current = ia.get_character();
+    }
+
+    /*!
+    @return character read from the input after ignoring all 'N' entries
+    */
+    char_int_type get_ignore_noop()
+    {
+        do
+        {
+            get();
+        }
+        while (current == 'N');
+
+        return current;
+    }
+
+    /*
+    @brief read a number from the input
+
+    @tparam NumberType the type of the number
+    @param[in] format   the current format (for diagnostics)
+    @param[out] result  number of type @a NumberType
+
+    @return whether conversion completed
+
+    @note This function needs to respect the system's endianness, because
+          bytes in CBOR, MessagePack, and UBJSON are stored in network order
+          (big endian) and therefore need reordering on little endian systems.
+          On the other hand, BSON and BJData use little endian and should reorder
+          on big endian systems.
+    */
+    template<typename NumberType, bool InputIsLittleEndian = false>
+    bool get_number(const input_format_t format, NumberType& result)
+    {
+        // step 1: read input into array with system's byte order
+        std::array<std::uint8_t, sizeof(NumberType)> vec{};
+        for (std::size_t i = 0; i < sizeof(NumberType); ++i)
+        {
+            get();
+            if (JSON_HEDLEY_UNLIKELY(!unexpect_eof(format, "number")))
+            {
+                return false;
+            }
+
+            // reverse byte order prior to conversion if necessary
+            if (is_little_endian != (InputIsLittleEndian || format == input_format_t::bjdata))
+            {
+                vec[sizeof(NumberType) - i - 1] = static_cast<std::uint8_t>(current);
+            }
+            else
+            {
+                vec[i] = static_cast<std::uint8_t>(current); // LCOV_EXCL_LINE
+            }
+        }
+
+        // step 2: convert array into number of type T and return
+        std::memcpy(&result, vec.data(), sizeof(NumberType));
+        return true;
+    }
+
+    /*!
+    @brief create a string by reading characters from the input
+
+    @tparam NumberType the type of the number
+    @param[in] format the current format (for diagnostics)
+    @param[in] len number of characters to read
+    @param[out] result string created by reading @a len bytes
+
+    @return whether string creation completed
+
+    @note We can not reserve @a len bytes for the result, because @a len
+          may be too large. Usually, @ref unexpect_eof() detects the end of
+          the input before we run out of string memory.
+    */
+    template<typename NumberType>
+    bool get_string(const input_format_t format,
+                    const NumberType len,
+                    string_t& result)
+    {
+        bool success = true;
+        for (NumberType i = 0; i < len; i++)
+        {
+            get();
+            if (JSON_HEDLEY_UNLIKELY(!unexpect_eof(format, "string")))
+            {
+                success = false;
+                break;
+            }
+            result.push_back(static_cast<typename string_t::value_type>(current));
+        }
+        return success;
+    }
+
+    /*!
+    @brief create a byte array by reading bytes from the input
+
+    @tparam NumberType the type of the number
+    @param[in] format the current format (for diagnostics)
+    @param[in] len number of bytes to read
+    @param[out] result byte array created by reading @a len bytes
+
+    @return whether byte array creation completed
+
+    @note We can not reserve @a len bytes for the result, because @a len
+          may be too large. Usually, @ref unexpect_eof() detects the end of
+          the input before we run out of memory.
+    */
+    template<typename NumberType>
+    bool get_binary(const input_format_t format,
+                    const NumberType len,
+                    binary_t& result)
+    {
+        bool success = true;
+        for (NumberType i = 0; i < len; i++)
+        {
+            get();
+            if (JSON_HEDLEY_UNLIKELY(!unexpect_eof(format, "binary")))
+            {
+                success = false;
+                break;
+            }
+            result.push_back(static_cast<std::uint8_t>(current));
+        }
+        return success;
+    }
+
+    /*!
+    @param[in] format   the current format (for diagnostics)
+    @param[in] context  further context information (for diagnostics)
+    @return whether the last read character is not EOF
+    */
+    JSON_HEDLEY_NON_NULL(3)
+    bool unexpect_eof(const input_format_t format, const char* context) const
+    {
+        if (JSON_HEDLEY_UNLIKELY(current == std::char_traits<char_type>::eof()))
+        {
+            return sax->parse_error(chars_read, "<end of file>",
+                                    parse_error::create(110, chars_read, exception_message(format, "unexpected end of input", context), nullptr));
+        }
+        return true;
+    }
+
+    /*!
+    @return a string representation of the last read byte
+    */
+    std::string get_token_string() const
+    {
+        std::array<char, 3> cr{{}};
+        static_cast<void>((std::snprintf)(cr.data(), cr.size(), "%.2hhX", static_cast<unsigned char>(current))); // NOLINT(cppcoreguidelines-pro-type-vararg,hicpp-vararg)
+        return std::string{cr.data()};
+    }
+
+    /*!
+    @param[in] format   the current format
+    @param[in] detail   a detailed error message
+    @param[in] context  further context information
+    @return a message string to use in the parse_error exceptions
+    */
+    std::string exception_message(const input_format_t format,
+                                  const std::string& detail,
+                                  const std::string& context) const
+    {
+        std::string error_msg = "syntax error while parsing ";
+
+        switch (format)
+        {
+            case input_format_t::cbor:
+                error_msg += "CBOR";
+                break;
+
+            case input_format_t::msgpack:
+                error_msg += "MessagePack";
+                break;
+
+            case input_format_t::ubjson:
+                error_msg += "UBJSON";
+                break;
+
+            case input_format_t::bson:
+                error_msg += "BSON";
+                break;
+
+            case input_format_t::bjdata:
+                error_msg += "BJData";
+                break;
+
+            case input_format_t::json: // LCOV_EXCL_LINE
+            default:            // LCOV_EXCL_LINE
+                JSON_ASSERT(false); // NOLINT(cert-dcl03-c,hicpp-static-assert,misc-static-assert) LCOV_EXCL_LINE
+        }
+
+        return concat(error_msg, ' ', context, ": ", detail);
+    }
+
+  private:
+    static JSON_INLINE_VARIABLE constexpr std::size_t npos = static_cast<std::size_t>(-1);
+
+    /// input adapter
+    InputAdapterType ia;
+
+    /// the current character
+    char_int_type current = std::char_traits<char_type>::eof();
+
+    /// the number of characters read
+    std::size_t chars_read = 0;
+
+    /// whether we can assume little endianness
+    const bool is_little_endian = little_endianness();
+
+    /// input format
+    const input_format_t input_format = input_format_t::json;
+
+    /// the SAX parser
+    json_sax_t* sax = nullptr;
+
+    // excluded markers in bjdata optimized type
+#define JSON_BINARY_READER_MAKE_BJD_OPTIMIZED_TYPE_MARKERS_ \
+    make_array<char_int_type>('F', 'H', 'N', 'S', 'T', 'Z', '[', '{')
+
+#define JSON_BINARY_READER_MAKE_BJD_TYPES_MAP_ \
+    make_array<bjd_type>(                      \
+    bjd_type{'C', "char"},                     \
+    bjd_type{'D', "double"},                   \
+    bjd_type{'I', "int16"},                    \
+    bjd_type{'L', "int64"},                    \
+    bjd_type{'M', "uint64"},                   \
+    bjd_type{'U', "uint8"},                    \
+    bjd_type{'d', "single"},                   \
+    bjd_type{'i', "int8"},                     \
+    bjd_type{'l', "int32"},                    \
+    bjd_type{'m', "uint32"},                   \
+    bjd_type{'u', "uint16"})
+
+  JSON_PRIVATE_UNLESS_TESTED:
+    // lookup tables
+    // NOLINTNEXTLINE(cppcoreguidelines-non-private-member-variables-in-classes)
+    const decltype(JSON_BINARY_READER_MAKE_BJD_OPTIMIZED_TYPE_MARKERS_) bjd_optimized_type_markers =
+        JSON_BINARY_READER_MAKE_BJD_OPTIMIZED_TYPE_MARKERS_;
+
+    using bjd_type = std::pair<char_int_type, string_t>;
+    // NOLINTNEXTLINE(cppcoreguidelines-non-private-member-variables-in-classes)
+    const decltype(JSON_BINARY_READER_MAKE_BJD_TYPES_MAP_) bjd_types_map =
+        JSON_BINARY_READER_MAKE_BJD_TYPES_MAP_;
+
+#undef JSON_BINARY_READER_MAKE_BJD_OPTIMIZED_TYPE_MARKERS_
+#undef JSON_BINARY_READER_MAKE_BJD_TYPES_MAP_
+};
+
+#ifndef JSON_HAS_CPP_17
+    template<typename BasicJsonType, typename InputAdapterType, typename SAX>
+    constexpr std::size_t binary_reader<BasicJsonType, InputAdapterType, SAX>::npos;
+#endif
+
+}  // namespace detail
+NLOHMANN_JSON_NAMESPACE_END
+
+// #include <nlohmann/detail/input/input_adapters.hpp>
+
+// #include <nlohmann/detail/input/lexer.hpp>
+
+// #include <nlohmann/detail/input/parser.hpp>
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.2
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013-2022 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+
+
+#include <cmath> // isfinite
+#include <cstdint> // uint8_t
+#include <functional> // function
+#include <string> // string
+#include <utility> // move
+#include <vector> // vector
+
+// #include <nlohmann/detail/exceptions.hpp>
+
+// #include <nlohmann/detail/input/input_adapters.hpp>
+
+// #include <nlohmann/detail/input/json_sax.hpp>
+
+// #include <nlohmann/detail/input/lexer.hpp>
+
+// #include <nlohmann/detail/macro_scope.hpp>
+
+// #include <nlohmann/detail/meta/is_sax.hpp>
+
+// #include <nlohmann/detail/string_concat.hpp>
+
+// #include <nlohmann/detail/value_t.hpp>
+
+
+NLOHMANN_JSON_NAMESPACE_BEGIN
+namespace detail
+{
+////////////
+// parser //
+////////////
+
+enum class parse_event_t : std::uint8_t
+{
+    /// the parser read `{` and started to process a JSON object
+    object_start,
+    /// the parser read `}` and finished processing a JSON object
+    object_end,
+    /// the parser read `[` and started to process a JSON array
+    array_start,
+    /// the parser read `]` and finished processing a JSON array
+    array_end,
+    /// the parser read a key of a value in an object
+    key,
+    /// the parser finished reading a JSON value
+    value
+};
+
+template<typename BasicJsonType>
+using parser_callback_t =
+    std::function<bool(int /*depth*/, parse_event_t /*event*/, BasicJsonType& /*parsed*/)>;
+
+/*!
+@brief syntax analysis
+
+This class implements a recursive descent parser.
+*/
+template<typename BasicJsonType, typename InputAdapterType>
+class parser
+{
+    using number_integer_t = typename BasicJsonType::number_integer_t;
+    using number_unsigned_t = typename BasicJsonType::number_unsigned_t;
+    using number_float_t = typename BasicJsonType::number_float_t;
+    using string_t = typename BasicJsonType::string_t;
+    using lexer_t = lexer<BasicJsonType, InputAdapterType>;
+    using token_type = typename lexer_t::token_type;
+
+  public:
+    /// a parser reading from an input adapter
+    explicit parser(InputAdapterType&& adapter,
+                    const parser_callback_t<BasicJsonType> cb = nullptr,
+                    const bool allow_exceptions_ = true,
+                    const bool skip_comments = false)
+        : callback(cb)
+        , m_lexer(std::move(adapter), skip_comments)
+        , allow_exceptions(allow_exceptions_)
+    {
+        // read first token
+        get_token();
+    }
+
+    /*!
+    @brief public parser interface
+
+    @param[in] strict      whether to expect the last token to be EOF
+    @param[in,out] result  parsed JSON value
+
+    @throw parse_error.101 in case of an unexpected token
+    @throw parse_error.102 if to_unicode fails or surrogate error
+    @throw parse_error.103 if to_unicode fails
+    */
+    void parse(const bool strict, BasicJsonType& result)
+    {
+        if (callback)
+        {
+            json_sax_dom_callback_parser<BasicJsonType> sdp(result, callback, allow_exceptions);
+            sax_parse_internal(&sdp);
+
+            // in strict mode, input must be completely read
+            if (strict && (get_token() != token_type::end_of_input))
+            {
+                sdp.parse_error(m_lexer.get_position(),
+                                m_lexer.get_token_string(),
+                                parse_error::create(101, m_lexer.get_position(),
+                                                    exception_message(token_type::end_of_input, "value"), nullptr));
+            }
+
+            // in case of an error, return discarded value
+            if (sdp.is_errored())
+            {
+                result = value_t::discarded;
+                return;
+            }
+
+            // set top-level value to null if it was discarded by the callback
+            // function
+            if (result.is_discarded())
+            {
+                result = nullptr;
+            }
+        }
+        else
+        {
+            json_sax_dom_parser<BasicJsonType> sdp(result, allow_exceptions);
+            sax_parse_internal(&sdp);
+
+            // in strict mode, input must be completely read
+            if (strict && (get_token() != token_type::end_of_input))
+            {
+                sdp.parse_error(m_lexer.get_position(),
+                                m_lexer.get_token_string(),
+                                parse_error::create(101, m_lexer.get_position(), exception_message(token_type::end_of_input, "value"), nullptr));
+            }
+
+            // in case of an error, return discarded value
+            if (sdp.is_errored())
+            {
+                result = value_t::discarded;
+                return;
+            }
+        }
+
+        result.assert_invariant();
+    }
+
+    /*!
+    @brief public accept interface
+
+    @param[in] strict  whether to expect the last token to be EOF
+    @return whether the input is a proper JSON text
+    */
+    bool accept(const bool strict = true)
+    {
+        json_sax_acceptor<BasicJsonType> sax_acceptor;
+        return sax_parse(&sax_acceptor, strict);
+    }
+
+    template<typename SAX>
+    JSON_HEDLEY_NON_NULL(2)
+    bool sax_parse(SAX* sax, const bool strict = true)
+    {
+        (void)detail::is_sax_static_asserts<SAX, BasicJsonType> {};
+        const bool result = sax_parse_internal(sax);
+
+        // strict mode: next byte must be EOF
+        if (result && strict && (get_token() != token_type::end_of_input))
+        {
+            return sax->parse_error(m_lexer.get_position(),
+                                    m_lexer.get_token_string(),
+                                    parse_error::create(101, m_lexer.get_position(), exception_message(token_type::end_of_input, "value"), nullptr));
+        }
+
+        return result;
+    }
+
+  private:
+    template<typename SAX>
+    JSON_HEDLEY_NON_NULL(2)
+    bool sax_parse_internal(SAX* sax)
+    {
+        // stack to remember the hierarchy of structured values we are parsing
+        // true = array; false = object
+        std::vector<bool> states;
+        // value to avoid a goto (see comment where set to true)
+        bool skip_to_state_evaluation = false;
+
+        while (true)
+        {
+            if (!skip_to_state_evaluation)
+            {
+                // invariant: get_token() was called before each iteration
+                switch (last_token)
+                {
+                    case token_type::begin_object:
+                    {
+                        if (JSON_HEDLEY_UNLIKELY(!sax->start_object(static_cast<std::size_t>(-1))))
+                        {
+                            return false;
+                        }
+
+                        // closing } -> we are done
+                        if (get_token() == token_type::end_object)
+                        {
+                            if (JSON_HEDLEY_UNLIKELY(!sax->end_object()))
+                            {
+                                return false;
+                            }
+                            break;
+                        }
+
+                        // parse key
+                        if (JSON_HEDLEY_UNLIKELY(last_token != token_type::value_string))
+                        {
+                            return sax->parse_error(m_lexer.get_position(),
+                                                    m_lexer.get_token_string(),
+                                                    parse_error::create(101, m_lexer.get_position(), exception_message(token_type::value_string, "object key"), nullptr));
+                        }
+                        if (JSON_HEDLEY_UNLIKELY(!sax->key(m_lexer.get_string())))
+                        {
+                            return false;
+                        }
+
+                        // parse separator (:)
+                        if (JSON_HEDLEY_UNLIKELY(get_token() != token_type::name_separator))
+                        {
+                            return sax->parse_error(m_lexer.get_position(),
+                                                    m_lexer.get_token_string(),
+                                                    parse_error::create(101, m_lexer.get_position(), exception_message(token_type::name_separator, "object separator"), nullptr));
+                        }
+
+                        // remember we are now inside an object
+                        states.push_back(false);
+
+                        // parse values
+                        get_token();
+                        continue;
+                    }
+
+                    case token_type::begin_array:
+                    {
+                        if (JSON_HEDLEY_UNLIKELY(!sax->start_array(static_cast<std::size_t>(-1))))
+                        {
+                            return false;
+                        }
+
+                        // closing ] -> we are done
+                        if (get_token() == token_type::end_array)
+                        {
+                            if (JSON_HEDLEY_UNLIKELY(!sax->end_array()))
+                            {
+                                return false;
+                            }
+                            break;
+                        }
+
+                        // remember we are now inside an array
+                        states.push_back(true);
+
+                        // parse values (no need to call get_token)
+                        continue;
+                    }
+
+                    case token_type::value_float:
+                    {
+                        const auto res = m_lexer.get_number_float();
+
+                        if (JSON_HEDLEY_UNLIKELY(!std::isfinite(res)))
+                        {
+                            return sax->parse_error(m_lexer.get_position(),
+                                                    m_lexer.get_token_string(),
+                                                    out_of_range::create(406, concat("number overflow parsing '", m_lexer.get_token_string(), '\''), nullptr));
+                        }
+
+                        if (JSON_HEDLEY_UNLIKELY(!sax->number_float(res, m_lexer.get_string())))
+                        {
+                            return false;
+                        }
+
+                        break;
+                    }
+
+                    case token_type::literal_false:
+                    {
+                        if (JSON_HEDLEY_UNLIKELY(!sax->boolean(false)))
+                        {
+                            return false;
+                        }
+                        break;
+                    }
+
+                    case token_type::literal_null:
+                    {
+                        if (JSON_HEDLEY_UNLIKELY(!sax->null()))
+                        {
+                            return false;
+                        }
+                        break;
+                    }
+
+                    case token_type::literal_true:
+                    {
+                        if (JSON_HEDLEY_UNLIKELY(!sax->boolean(true)))
+                        {
+                            return false;
+                        }
+                        break;
+                    }
+
+                    case token_type::value_integer:
+                    {
+                        if (JSON_HEDLEY_UNLIKELY(!sax->number_integer(m_lexer.get_number_integer())))
+                        {
+                            return false;
+                        }
+                        break;
+                    }
+
+                    case token_type::value_string:
+                    {
+                        if (JSON_HEDLEY_UNLIKELY(!sax->string(m_lexer.get_string())))
+                        {
+                            return false;
+                        }
+                        break;
+                    }
+
+                    case token_type::value_unsigned:
+                    {
+                        if (JSON_HEDLEY_UNLIKELY(!sax->number_unsigned(m_lexer.get_number_unsigned())))
+                        {
+                            return false;
+                        }
+                        break;
+                    }
+
+                    case token_type::parse_error:
+                    {
+                        // using "uninitialized" to avoid "expected" message
+                        return sax->parse_error(m_lexer.get_position(),
+                                                m_lexer.get_token_string(),
+                                                parse_error::create(101, m_lexer.get_position(), exception_message(token_type::uninitialized, "value"), nullptr));
+                    }
+
+                    case token_type::uninitialized:
+                    case token_type::end_array:
+                    case token_type::end_object:
+                    case token_type::name_separator:
+                    case token_type::value_separator:
+                    case token_type::end_of_input:
+                    case token_type::literal_or_value:
+                    default: // the last token was unexpected
+                    {
+                        return sax->parse_error(m_lexer.get_position(),
+                                                m_lexer.get_token_string(),
+                                                parse_error::create(101, m_lexer.get_position(), exception_message(token_type::literal_or_value, "value"), nullptr));
+                    }
+                }
+            }
+            else
+            {
+                skip_to_state_evaluation = false;
+            }
+
+            // we reached this line after we successfully parsed a value
+            if (states.empty())
+            {
+                // empty stack: we reached the end of the hierarchy: done
+                return true;
+            }
+
+            if (states.back())  // array
+            {
+                // comma -> next value
+                if (get_token() == token_type::value_separator)
+                {
+                    // parse a new value
+                    get_token();
+                    continue;
+                }
+
+                // closing ]
+                if (JSON_HEDLEY_LIKELY(last_token == token_type::end_array))
+                {
+                    if (JSON_HEDLEY_UNLIKELY(!sax->end_array()))
+                    {
+                        return false;
+                    }
+
+                    // We are done with this array. Before we can parse a
+                    // new value, we need to evaluate the new state first.
+                    // By setting skip_to_state_evaluation to false, we
+                    // are effectively jumping to the beginning of this if.
+                    JSON_ASSERT(!states.empty());
+                    states.pop_back();
+                    skip_to_state_evaluation = true;
+                    continue;
+                }
+
+                return sax->parse_error(m_lexer.get_position(),
+                                        m_lexer.get_token_string(),
+                                        parse_error::create(101, m_lexer.get_position(), exception_message(token_type::end_array, "array"), nullptr));
+            }
+
+            // states.back() is false -> object
+
+            // comma -> next value
+            if (get_token() == token_type::value_separator)
+            {
+                // parse key
+                if (JSON_HEDLEY_UNLIKELY(get_token() != token_type::value_string))
+                {
+                    return sax->parse_error(m_lexer.get_position(),
+                                            m_lexer.get_token_string(),
+                                            parse_error::create(101, m_lexer.get_position(), exception_message(token_type::value_string, "object key"), nullptr));
+                }
+
+                if (JSON_HEDLEY_UNLIKELY(!sax->key(m_lexer.get_string())))
+                {
+                    return false;
+                }
+
+                // parse separator (:)
+                if (JSON_HEDLEY_UNLIKELY(get_token() != token_type::name_separator))
+                {
+                    return sax->parse_error(m_lexer.get_position(),
+                                            m_lexer.get_token_string(),
+                                            parse_error::create(101, m_lexer.get_position(), exception_message(token_type::name_separator, "object separator"), nullptr));
+                }
+
+                // parse values
+                get_token();
+                continue;
+            }
+
+            // closing }
+            if (JSON_HEDLEY_LIKELY(last_token == token_type::end_object))
+            {
+                if (JSON_HEDLEY_UNLIKELY(!sax->end_object()))
+                {
+                    return false;
+                }
+
+                // We are done with this object. Before we can parse a
+                // new value, we need to evaluate the new state first.
+                // By setting skip_to_state_evaluation to false, we
+                // are effectively jumping to the beginning of this if.
+                JSON_ASSERT(!states.empty());
+                states.pop_back();
+                skip_to_state_evaluation = true;
+                continue;
+            }
+
+            return sax->parse_error(m_lexer.get_position(),
+                                    m_lexer.get_token_string(),
+                                    parse_error::create(101, m_lexer.get_position(), exception_message(token_type::end_object, "object"), nullptr));
+        }
+    }
+
+    /// get next token from lexer
+    token_type get_token()
+    {
+        return last_token = m_lexer.scan();
+    }
+
+    std::string exception_message(const token_type expected, const std::string& context)
+    {
+        std::string error_msg = "syntax error ";
+
+        if (!context.empty())
+        {
+            error_msg += concat("while parsing ", context, ' ');
+        }
+
+        error_msg += "- ";
+
+        if (last_token == token_type::parse_error)
+        {
+            error_msg += concat(m_lexer.get_error_message(), "; last read: '",
+                                m_lexer.get_token_string(), '\'');
+        }
+        else
+        {
+            error_msg += concat("unexpected ", lexer_t::token_type_name(last_token));
+        }
+
+        if (expected != token_type::uninitialized)
+        {
+            error_msg += concat("; expected ", lexer_t::token_type_name(expected));
+        }
+
+        return error_msg;
+    }
+
+  private:
+    /// callback function
+    const parser_callback_t<BasicJsonType> callback = nullptr;
+    /// the type of the last read token
+    token_type last_token = token_type::uninitialized;
+    /// the lexer
+    lexer_t m_lexer;
+    /// whether to throw exceptions in case of errors
+    const bool allow_exceptions = true;
+};
+
+}  // namespace detail
+NLOHMANN_JSON_NAMESPACE_END
+
+// #include <nlohmann/detail/iterators/internal_iterator.hpp>
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.2
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013-2022 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+
+
+// #include <nlohmann/detail/abi_macros.hpp>
+
+// #include <nlohmann/detail/iterators/primitive_iterator.hpp>
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.2
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013-2022 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+
+
+#include <cstddef> // ptrdiff_t
+#include <limits>  // numeric_limits
+
+// #include <nlohmann/detail/macro_scope.hpp>
+
+
+NLOHMANN_JSON_NAMESPACE_BEGIN
+namespace detail
+{
+
+/*
+@brief an iterator for primitive JSON types
+
+This class models an iterator for primitive JSON types (boolean, number,
+string). It's only purpose is to allow the iterator/const_iterator classes
+to "iterate" over primitive values. Internally, the iterator is modeled by
+a `difference_type` variable. Value begin_value (`0`) models the begin,
+end_value (`1`) models past the end.
+*/
+class primitive_iterator_t
+{
+  private:
+    using difference_type = std::ptrdiff_t;
+    static constexpr difference_type begin_value = 0;
+    static constexpr difference_type end_value = begin_value + 1;
+
+  JSON_PRIVATE_UNLESS_TESTED:
+    /// iterator as signed integer type
+    difference_type m_it = (std::numeric_limits<std::ptrdiff_t>::min)();
+
+  public:
+    constexpr difference_type get_value() const noexcept
+    {
+        return m_it;
+    }
+
+    /// set iterator to a defined beginning
+    void set_begin() noexcept
+    {
+        m_it = begin_value;
+    }
+
+    /// set iterator to a defined past the end
+    void set_end() noexcept
+    {
+        m_it = end_value;
+    }
+
+    /// return whether the iterator can be dereferenced
+    constexpr bool is_begin() const noexcept
+    {
+        return m_it == begin_value;
+    }
+
+    /// return whether the iterator is at end
+    constexpr bool is_end() const noexcept
+    {
+        return m_it == end_value;
+    }
+
+    friend constexpr bool operator==(primitive_iterator_t lhs, primitive_iterator_t rhs) noexcept
+    {
+        return lhs.m_it == rhs.m_it;
+    }
+
+    friend constexpr bool operator<(primitive_iterator_t lhs, primitive_iterator_t rhs) noexcept
+    {
+        return lhs.m_it < rhs.m_it;
+    }
+
+    primitive_iterator_t operator+(difference_type n) noexcept
+    {
+        auto result = *this;
+        result += n;
+        return result;
+    }
+
+    friend constexpr difference_type operator-(primitive_iterator_t lhs, primitive_iterator_t rhs) noexcept
+    {
+        return lhs.m_it - rhs.m_it;
+    }
+
+    primitive_iterator_t& operator++() noexcept
+    {
+        ++m_it;
+        return *this;
+    }
+
+    primitive_iterator_t operator++(int)& noexcept // NOLINT(cert-dcl21-cpp)
+    {
+        auto result = *this;
+        ++m_it;
+        return result;
+    }
+
+    primitive_iterator_t& operator--() noexcept
+    {
+        --m_it;
+        return *this;
+    }
+
+    primitive_iterator_t operator--(int)& noexcept // NOLINT(cert-dcl21-cpp)
+    {
+        auto result = *this;
+        --m_it;
+        return result;
+    }
+
+    primitive_iterator_t& operator+=(difference_type n) noexcept
+    {
+        m_it += n;
+        return *this;
+    }
+
+    primitive_iterator_t& operator-=(difference_type n) noexcept
+    {
+        m_it -= n;
+        return *this;
+    }
+};
+
+}  // namespace detail
+NLOHMANN_JSON_NAMESPACE_END
+
+
+NLOHMANN_JSON_NAMESPACE_BEGIN
+namespace detail
+{
+
+/*!
+@brief an iterator value
+
+@note This structure could easily be a union, but MSVC currently does not allow
+unions members with complex constructors, see https://github.com/nlohmann/json/pull/105.
+*/
+template<typename BasicJsonType> struct internal_iterator
+{
+    /// iterator for JSON objects
+    typename BasicJsonType::object_t::iterator object_iterator {};
+    /// iterator for JSON arrays
+    typename BasicJsonType::array_t::iterator array_iterator {};
+    /// generic iterator for all other types
+    primitive_iterator_t primitive_iterator {};
+};
+
+}  // namespace detail
+NLOHMANN_JSON_NAMESPACE_END
+
+// #include <nlohmann/detail/iterators/iter_impl.hpp>
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.2
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013-2022 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+
+
+#include <iterator> // iterator, random_access_iterator_tag, bidirectional_iterator_tag, advance, next
+#include <type_traits> // conditional, is_const, remove_const
+
+// #include <nlohmann/detail/exceptions.hpp>
+
+// #include <nlohmann/detail/iterators/internal_iterator.hpp>
+
+// #include <nlohmann/detail/iterators/primitive_iterator.hpp>
+
+// #include <nlohmann/detail/macro_scope.hpp>
+
+// #include <nlohmann/detail/meta/cpp_future.hpp>
+
+// #include <nlohmann/detail/meta/type_traits.hpp>
+
+// #include <nlohmann/detail/value_t.hpp>
+
+
+NLOHMANN_JSON_NAMESPACE_BEGIN
+namespace detail
+{
+
+// forward declare, to be able to friend it later on
+template<typename IteratorType> class iteration_proxy;
+template<typename IteratorType> class iteration_proxy_value;
+
+/*!
+@brief a template for a bidirectional iterator for the @ref basic_json class
+This class implements a both iterators (iterator and const_iterator) for the
+@ref basic_json class.
+@note An iterator is called *initialized* when a pointer to a JSON value has
+      been set (e.g., by a constructor or a copy assignment). If the iterator is
+      default-constructed, it is *uninitialized* and most methods are undefined.
+      **The library uses assertions to detect calls on uninitialized iterators.**
+@requirement The class satisfies the following concept requirements:
+-
+[BidirectionalIterator](https://en.cppreference.com/w/cpp/named_req/BidirectionalIterator):
+  The iterator that can be moved can be moved in both directions (i.e.
+  incremented and decremented).
+@since version 1.0.0, simplified in version 2.0.9, change to bidirectional
+       iterators in version 3.0.0 (see https://github.com/nlohmann/json/issues/593)
+*/
+template<typename BasicJsonType>
+class iter_impl // NOLINT(cppcoreguidelines-special-member-functions,hicpp-special-member-functions)
+{
+    /// the iterator with BasicJsonType of different const-ness
+    using other_iter_impl = iter_impl<typename std::conditional<std::is_const<BasicJsonType>::value, typename std::remove_const<BasicJsonType>::type, const BasicJsonType>::type>;
+    /// allow basic_json to access private members
+    friend other_iter_impl;
+    friend BasicJsonType;
+    friend iteration_proxy<iter_impl>;
+    friend iteration_proxy_value<iter_impl>;
+
+    using object_t = typename BasicJsonType::object_t;
+    using array_t = typename BasicJsonType::array_t;
+    // make sure BasicJsonType is basic_json or const basic_json
+    static_assert(is_basic_json<typename std::remove_const<BasicJsonType>::type>::value,
+                  "iter_impl only accepts (const) basic_json");
+    // superficial check for the LegacyBidirectionalIterator named requirement
+    static_assert(std::is_base_of<std::bidirectional_iterator_tag, std::bidirectional_iterator_tag>::value
+                  &&  std::is_base_of<std::bidirectional_iterator_tag, typename std::iterator_traits<typename array_t::iterator>::iterator_category>::value,
+                  "basic_json iterator assumes array and object type iterators satisfy the LegacyBidirectionalIterator named requirement.");
+
+  public:
+    /// The std::iterator class template (used as a base class to provide typedefs) is deprecated in C++17.
+    /// The C++ Standard has never required user-defined iterators to derive from std::iterator.
+    /// A user-defined iterator should provide publicly accessible typedefs named
+    /// iterator_category, value_type, difference_type, pointer, and reference.
+    /// Note that value_type is required to be non-const, even for constant iterators.
+    using iterator_category = std::bidirectional_iterator_tag;
+
+    /// the type of the values when the iterator is dereferenced
+    using value_type = typename BasicJsonType::value_type;
+    /// a type to represent differences between iterators
+    using difference_type = typename BasicJsonType::difference_type;
+    /// defines a pointer to the type iterated over (value_type)
+    using pointer = typename std::conditional<std::is_const<BasicJsonType>::value,
+          typename BasicJsonType::const_pointer,
+          typename BasicJsonType::pointer>::type;
+    /// defines a reference to the type iterated over (value_type)
+    using reference =
+        typename std::conditional<std::is_const<BasicJsonType>::value,
+        typename BasicJsonType::const_reference,
+        typename BasicJsonType::reference>::type;
+
+    iter_impl() = default;
+    ~iter_impl() = default;
+    iter_impl(iter_impl&&) noexcept = default;
+    iter_impl& operator=(iter_impl&&) noexcept = default;
+
+    /*!
+    @brief constructor for a given JSON instance
+    @param[in] object  pointer to a JSON object for this iterator
+    @pre object != nullptr
+    @post The iterator is initialized; i.e. `m_object != nullptr`.
+    */
+    explicit iter_impl(pointer object) noexcept : m_object(object)
+    {
+        JSON_ASSERT(m_object != nullptr);
+
+        switch (m_object->m_data.m_type)
+        {
+            case value_t::object:
+            {
+                m_it.object_iterator = typename object_t::iterator();
+                break;
+            }
+
+            case value_t::array:
+            {
+                m_it.array_iterator = typename array_t::iterator();
+                break;
+            }
+
+            case value_t::null:
+            case value_t::string:
+            case value_t::boolean:
+            case value_t::number_integer:
+            case value_t::number_unsigned:
+            case value_t::number_float:
+            case value_t::binary:
+            case value_t::discarded:
+            default:
+            {
+                m_it.primitive_iterator = primitive_iterator_t();
+                break;
+            }
+        }
+    }
+
+    /*!
+    @note The conventional copy constructor and copy assignment are implicitly
+          defined. Combined with the following converting constructor and
+          assignment, they support: (1) copy from iterator to iterator, (2)
+          copy from const iterator to const iterator, and (3) conversion from
+          iterator to const iterator. However conversion from const iterator
+          to iterator is not defined.
+    */
+
+    /*!
+    @brief const copy constructor
+    @param[in] other const iterator to copy from
+    @note This copy constructor had to be defined explicitly to circumvent a bug
+          occurring on msvc v19.0 compiler (VS 2015) debug build. For more
+          information refer to: https://github.com/nlohmann/json/issues/1608
+    */
+    iter_impl(const iter_impl<const BasicJsonType>& other) noexcept
+        : m_object(other.m_object), m_it(other.m_it)
+    {}
+
+    /*!
+    @brief converting assignment
+    @param[in] other const iterator to copy from
+    @return const/non-const iterator
+    @note It is not checked whether @a other is initialized.
+    */
+    iter_impl& operator=(const iter_impl<const BasicJsonType>& other) noexcept
+    {
+        if (&other != this)
+        {
+            m_object = other.m_object;
+            m_it = other.m_it;
+        }
+        return *this;
+    }
+
+    /*!
+    @brief converting constructor
+    @param[in] other  non-const iterator to copy from
+    @note It is not checked whether @a other is initialized.
+    */
+    iter_impl(const iter_impl<typename std::remove_const<BasicJsonType>::type>& other) noexcept
+        : m_object(other.m_object), m_it(other.m_it)
+    {}
+
+    /*!
+    @brief converting assignment
+    @param[in] other  non-const iterator to copy from
+    @return const/non-const iterator
+    @note It is not checked whether @a other is initialized.
+    */
+    iter_impl& operator=(const iter_impl<typename std::remove_const<BasicJsonType>::type>& other) noexcept // NOLINT(cert-oop54-cpp)
+    {
+        m_object = other.m_object;
+        m_it = other.m_it;
+        return *this;
+    }
+
+  JSON_PRIVATE_UNLESS_TESTED:
+    /*!
+    @brief set the iterator to the first value
+    @pre The iterator is initialized; i.e. `m_object != nullptr`.
+    */
+    void set_begin() noexcept
+    {
+        JSON_ASSERT(m_object != nullptr);
+
+        switch (m_object->m_data.m_type)
+        {
+            case value_t::object:
+            {
+                m_it.object_iterator = m_object->m_data.m_value.object->begin();
+                break;
+            }
+
+            case value_t::array:
+            {
+                m_it.array_iterator = m_object->m_data.m_value.array->begin();
+                break;
+            }
+
+            case value_t::null:
+            {
+                // set to end so begin()==end() is true: null is empty
+                m_it.primitive_iterator.set_end();
+                break;
+            }
+
+            case value_t::string:
+            case value_t::boolean:
+            case value_t::number_integer:
+            case value_t::number_unsigned:
+            case value_t::number_float:
+            case value_t::binary:
+            case value_t::discarded:
+            default:
+            {
+                m_it.primitive_iterator.set_begin();
+                break;
+            }
+        }
+    }
+
+    /*!
+    @brief set the iterator past the last value
+    @pre The iterator is initialized; i.e. `m_object != nullptr`.
+    */
+    void set_end() noexcept
+    {
+        JSON_ASSERT(m_object != nullptr);
+
+        switch (m_object->m_data.m_type)
+        {
+            case value_t::object:
+            {
+                m_it.object_iterator = m_object->m_data.m_value.object->end();
+                break;
+            }
+
+            case value_t::array:
+            {
+                m_it.array_iterator = m_object->m_data.m_value.array->end();
+                break;
+            }
+
+            case value_t::null:
+            case value_t::string:
+            case value_t::boolean:
+            case value_t::number_integer:
+            case value_t::number_unsigned:
+            case value_t::number_float:
+            case value_t::binary:
+            case value_t::discarded:
+            default:
+            {
+                m_it.primitive_iterator.set_end();
+                break;
+            }
+        }
+    }
+
+  public:
+    /*!
+    @brief return a reference to the value pointed to by the iterator
+    @pre The iterator is initialized; i.e. `m_object != nullptr`.
+    */
+    reference operator*() const
+    {
+        JSON_ASSERT(m_object != nullptr);
+
+        switch (m_object->m_data.m_type)
+        {
+            case value_t::object:
+            {
+                JSON_ASSERT(m_it.object_iterator != m_object->m_data.m_value.object->end());
+                return m_it.object_iterator->second;
+            }
+
+            case value_t::array:
+            {
+                JSON_ASSERT(m_it.array_iterator != m_object->m_data.m_value.array->end());
+                return *m_it.array_iterator;
+            }
+
+            case value_t::null:
+                JSON_THROW(invalid_iterator::create(214, "cannot get value", m_object));
+
+            case value_t::string:
+            case value_t::boolean:
+            case value_t::number_integer:
+            case value_t::number_unsigned:
+            case value_t::number_float:
+            case value_t::binary:
+            case value_t::discarded:
+            default:
+            {
+                if (JSON_HEDLEY_LIKELY(m_it.primitive_iterator.is_begin()))
+                {
+                    return *m_object;
+                }
+
+                JSON_THROW(invalid_iterator::create(214, "cannot get value", m_object));
+            }
+        }
+    }
+
+    /*!
+    @brief dereference the iterator
+    @pre The iterator is initialized; i.e. `m_object != nullptr`.
+    */
+    pointer operator->() const
+    {
+        JSON_ASSERT(m_object != nullptr);
+
+        switch (m_object->m_data.m_type)
+        {
+            case value_t::object:
+            {
+                JSON_ASSERT(m_it.object_iterator != m_object->m_data.m_value.object->end());
+                return &(m_it.object_iterator->second);
+            }
+
+            case value_t::array:
+            {
+                JSON_ASSERT(m_it.array_iterator != m_object->m_data.m_value.array->end());
+                return &*m_it.array_iterator;
+            }
+
+            case value_t::null:
+            case value_t::string:
+            case value_t::boolean:
+            case value_t::number_integer:
+            case value_t::number_unsigned:
+            case value_t::number_float:
+            case value_t::binary:
+            case value_t::discarded:
+            default:
+            {
+                if (JSON_HEDLEY_LIKELY(m_it.primitive_iterator.is_begin()))
+                {
+                    return m_object;
+                }
+
+                JSON_THROW(invalid_iterator::create(214, "cannot get value", m_object));
+            }
+        }
+    }
+
+    /*!
+    @brief post-increment (it++)
+    @pre The iterator is initialized; i.e. `m_object != nullptr`.
+    */
+    iter_impl operator++(int)& // NOLINT(cert-dcl21-cpp)
+    {
+        auto result = *this;
+        ++(*this);
+        return result;
+    }
+
+    /*!
+    @brief pre-increment (++it)
+    @pre The iterator is initialized; i.e. `m_object != nullptr`.
+    */
+    iter_impl& operator++()
+    {
+        JSON_ASSERT(m_object != nullptr);
+
+        switch (m_object->m_data.m_type)
+        {
+            case value_t::object:
+            {
+                std::advance(m_it.object_iterator, 1);
+                break;
+            }
+
+            case value_t::array:
+            {
+                std::advance(m_it.array_iterator, 1);
+                break;
+            }
+
+            case value_t::null:
+            case value_t::string:
+            case value_t::boolean:
+            case value_t::number_integer:
+            case value_t::number_unsigned:
+            case value_t::number_float:
+            case value_t::binary:
+            case value_t::discarded:
+            default:
+            {
+                ++m_it.primitive_iterator;
+                break;
+            }
+        }
+
+        return *this;
+    }
+
+    /*!
+    @brief post-decrement (it--)
+    @pre The iterator is initialized; i.e. `m_object != nullptr`.
+    */
+    iter_impl operator--(int)& // NOLINT(cert-dcl21-cpp)
+    {
+        auto result = *this;
+        --(*this);
+        return result;
+    }
+
+    /*!
+    @brief pre-decrement (--it)
+    @pre The iterator is initialized; i.e. `m_object != nullptr`.
+    */
+    iter_impl& operator--()
+    {
+        JSON_ASSERT(m_object != nullptr);
+
+        switch (m_object->m_data.m_type)
+        {
+            case value_t::object:
+            {
+                std::advance(m_it.object_iterator, -1);
+                break;
+            }
+
+            case value_t::array:
+            {
+                std::advance(m_it.array_iterator, -1);
+                break;
+            }
+
+            case value_t::null:
+            case value_t::string:
+            case value_t::boolean:
+            case value_t::number_integer:
+            case value_t::number_unsigned:
+            case value_t::number_float:
+            case value_t::binary:
+            case value_t::discarded:
+            default:
+            {
+                --m_it.primitive_iterator;
+                break;
+            }
+        }
+
+        return *this;
+    }
+
+    /*!
+    @brief comparison: equal
+    @pre The iterator is initialized; i.e. `m_object != nullptr`.
+    */
+    template < typename IterImpl, detail::enable_if_t < (std::is_same<IterImpl, iter_impl>::value || std::is_same<IterImpl, other_iter_impl>::value), std::nullptr_t > = nullptr >
+    bool operator==(const IterImpl& other) const
+    {
+        // if objects are not the same, the comparison is undefined
+        if (JSON_HEDLEY_UNLIKELY(m_object != other.m_object))
+        {
+            JSON_THROW(invalid_iterator::create(212, "cannot compare iterators of different containers", m_object));
+        }
+
+        JSON_ASSERT(m_object != nullptr);
+
+        switch (m_object->m_data.m_type)
+        {
+            case value_t::object:
+                return (m_it.object_iterator == other.m_it.object_iterator);
+
+            case value_t::array:
+                return (m_it.array_iterator == other.m_it.array_iterator);
+
+            case value_t::null:
+            case value_t::string:
+            case value_t::boolean:
+            case value_t::number_integer:
+            case value_t::number_unsigned:
+            case value_t::number_float:
+            case value_t::binary:
+            case value_t::discarded:
+            default:
+                return (m_it.primitive_iterator == other.m_it.primitive_iterator);
+        }
+    }
+
+    /*!
+    @brief comparison: not equal
+    @pre The iterator is initialized; i.e. `m_object != nullptr`.
+    */
+    template < typename IterImpl, detail::enable_if_t < (std::is_same<IterImpl, iter_impl>::value || std::is_same<IterImpl, other_iter_impl>::value), std::nullptr_t > = nullptr >
+    bool operator!=(const IterImpl& other) const
+    {
+        return !operator==(other);
+    }
+
+    /*!
+    @brief comparison: smaller
+    @pre The iterator is initialized; i.e. `m_object != nullptr`.
+    */
+    bool operator<(const iter_impl& other) const
+    {
+        // if objects are not the same, the comparison is undefined
+        if (JSON_HEDLEY_UNLIKELY(m_object != other.m_object))
+        {
+            JSON_THROW(invalid_iterator::create(212, "cannot compare iterators of different containers", m_object));
+        }
+
+        JSON_ASSERT(m_object != nullptr);
+
+        switch (m_object->m_data.m_type)
+        {
+            case value_t::object:
+                JSON_THROW(invalid_iterator::create(213, "cannot compare order of object iterators", m_object));
+
+            case value_t::array:
+                return (m_it.array_iterator < other.m_it.array_iterator);
+
+            case value_t::null:
+            case value_t::string:
+            case value_t::boolean:
+            case value_t::number_integer:
+            case value_t::number_unsigned:
+            case value_t::number_float:
+            case value_t::binary:
+            case value_t::discarded:
+            default:
+                return (m_it.primitive_iterator < other.m_it.primitive_iterator);
+        }
+    }
+
+    /*!
+    @brief comparison: less than or equal
+    @pre The iterator is initialized; i.e. `m_object != nullptr`.
+    */
+    bool operator<=(const iter_impl& other) const
+    {
+        return !other.operator < (*this);
+    }
+
+    /*!
+    @brief comparison: greater than
+    @pre The iterator is initialized; i.e. `m_object != nullptr`.
+    */
+    bool operator>(const iter_impl& other) const
+    {
+        return !operator<=(other);
+    }
+
+    /*!
+    @brief comparison: greater than or equal
+    @pre The iterator is initialized; i.e. `m_object != nullptr`.
+    */
+    bool operator>=(const iter_impl& other) const
+    {
+        return !operator<(other);
+    }
+
+    /*!
+    @brief add to iterator
+    @pre The iterator is initialized; i.e. `m_object != nullptr`.
+    */
+    iter_impl& operator+=(difference_type i)
+    {
+        JSON_ASSERT(m_object != nullptr);
+
+        switch (m_object->m_data.m_type)
+        {
+            case value_t::object:
+                JSON_THROW(invalid_iterator::create(209, "cannot use offsets with object iterators", m_object));
+
+            case value_t::array:
+            {
+                std::advance(m_it.array_iterator, i);
+                break;
+            }
+
+            case value_t::null:
+            case value_t::string:
+            case value_t::boolean:
+            case value_t::number_integer:
+            case value_t::number_unsigned:
+            case value_t::number_float:
+            case value_t::binary:
+            case value_t::discarded:
+            default:
+            {
+                m_it.primitive_iterator += i;
+                break;
+            }
+        }
+
+        return *this;
+    }
+
+    /*!
+    @brief subtract from iterator
+    @pre The iterator is initialized; i.e. `m_object != nullptr`.
+    */
+    iter_impl& operator-=(difference_type i)
+    {
+        return operator+=(-i);
+    }
+
+    /*!
+    @brief add to iterator
+    @pre The iterator is initialized; i.e. `m_object != nullptr`.
+    */
+    iter_impl operator+(difference_type i) const
+    {
+        auto result = *this;
+        result += i;
+        return result;
+    }
+
+    /*!
+    @brief addition of distance and iterator
+    @pre The iterator is initialized; i.e. `m_object != nullptr`.
+    */
+    friend iter_impl operator+(difference_type i, const iter_impl& it)
+    {
+        auto result = it;
+        result += i;
+        return result;
+    }
+
+    /*!
+    @brief subtract from iterator
+    @pre The iterator is initialized; i.e. `m_object != nullptr`.
+    */
+    iter_impl operator-(difference_type i) const
+    {
+        auto result = *this;
+        result -= i;
+        return result;
+    }
+
+    /*!
+    @brief return difference
+    @pre The iterator is initialized; i.e. `m_object != nullptr`.
+    */
+    difference_type operator-(const iter_impl& other) const
+    {
+        JSON_ASSERT(m_object != nullptr);
+
+        switch (m_object->m_data.m_type)
+        {
+            case value_t::object:
+                JSON_THROW(invalid_iterator::create(209, "cannot use offsets with object iterators", m_object));
+
+            case value_t::array:
+                return m_it.array_iterator - other.m_it.array_iterator;
+
+            case value_t::null:
+            case value_t::string:
+            case value_t::boolean:
+            case value_t::number_integer:
+            case value_t::number_unsigned:
+            case value_t::number_float:
+            case value_t::binary:
+            case value_t::discarded:
+            default:
+                return m_it.primitive_iterator - other.m_it.primitive_iterator;
+        }
+    }
+
+    /*!
+    @brief access to successor
+    @pre The iterator is initialized; i.e. `m_object != nullptr`.
+    */
+    reference operator[](difference_type n) const
+    {
+        JSON_ASSERT(m_object != nullptr);
+
+        switch (m_object->m_data.m_type)
+        {
+            case value_t::object:
+                JSON_THROW(invalid_iterator::create(208, "cannot use operator[] for object iterators", m_object));
+
+            case value_t::array:
+                return *std::next(m_it.array_iterator, n);
+
+            case value_t::null:
+                JSON_THROW(invalid_iterator::create(214, "cannot get value", m_object));
+
+            case value_t::string:
+            case value_t::boolean:
+            case value_t::number_integer:
+            case value_t::number_unsigned:
+            case value_t::number_float:
+            case value_t::binary:
+            case value_t::discarded:
+            default:
+            {
+                if (JSON_HEDLEY_LIKELY(m_it.primitive_iterator.get_value() == -n))
+                {
+                    return *m_object;
+                }
+
+                JSON_THROW(invalid_iterator::create(214, "cannot get value", m_object));
+            }
+        }
+    }
+
+    /*!
+    @brief return the key of an object iterator
+    @pre The iterator is initialized; i.e. `m_object != nullptr`.
+    */
+    const typename object_t::key_type& key() const
+    {
+        JSON_ASSERT(m_object != nullptr);
+
+        if (JSON_HEDLEY_LIKELY(m_object->is_object()))
+        {
+            return m_it.object_iterator->first;
+        }
+
+        JSON_THROW(invalid_iterator::create(207, "cannot use key() for non-object iterators", m_object));
+    }
+
+    /*!
+    @brief return the value of an iterator
+    @pre The iterator is initialized; i.e. `m_object != nullptr`.
+    */
+    reference value() const
+    {
+        return operator*();
+    }
+
+  JSON_PRIVATE_UNLESS_TESTED:
+    /// associated JSON instance
+    pointer m_object = nullptr;
+    /// the actual iterator of the associated instance
+    internal_iterator<typename std::remove_const<BasicJsonType>::type> m_it {};
+};
+
+}  // namespace detail
+NLOHMANN_JSON_NAMESPACE_END
+
+// #include <nlohmann/detail/iterators/iteration_proxy.hpp>
+
+// #include <nlohmann/detail/iterators/json_reverse_iterator.hpp>
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.2
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013-2022 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+
+
+#include <cstddef> // ptrdiff_t
+#include <iterator> // reverse_iterator
+#include <utility> // declval
+
+// #include <nlohmann/detail/abi_macros.hpp>
+
+
+NLOHMANN_JSON_NAMESPACE_BEGIN
+namespace detail
+{
+
+//////////////////////
+// reverse_iterator //
+//////////////////////
+
+/*!
+@brief a template for a reverse iterator class
+
+@tparam Base the base iterator type to reverse. Valid types are @ref
+iterator (to create @ref reverse_iterator) and @ref const_iterator (to
+create @ref const_reverse_iterator).
+
+@requirement The class satisfies the following concept requirements:
+-
+[BidirectionalIterator](https://en.cppreference.com/w/cpp/named_req/BidirectionalIterator):
+  The iterator that can be moved can be moved in both directions (i.e.
+  incremented and decremented).
+- [OutputIterator](https://en.cppreference.com/w/cpp/named_req/OutputIterator):
+  It is possible to write to the pointed-to element (only if @a Base is
+  @ref iterator).
+
+@since version 1.0.0
+*/
+template<typename Base>
+class json_reverse_iterator : public std::reverse_iterator<Base>
+{
+  public:
+    using difference_type = std::ptrdiff_t;
+    /// shortcut to the reverse iterator adapter
+    using base_iterator = std::reverse_iterator<Base>;
+    /// the reference type for the pointed-to element
+    using reference = typename Base::reference;
+
+    /// create reverse iterator from iterator
+    explicit json_reverse_iterator(const typename base_iterator::iterator_type& it) noexcept
+        : base_iterator(it) {}
+
+    /// create reverse iterator from base class
+    explicit json_reverse_iterator(const base_iterator& it) noexcept : base_iterator(it) {}
+
+    /// post-increment (it++)
+    json_reverse_iterator operator++(int)& // NOLINT(cert-dcl21-cpp)
+    {
+        return static_cast<json_reverse_iterator>(base_iterator::operator++(1));
+    }
+
+    /// pre-increment (++it)
+    json_reverse_iterator& operator++()
+    {
+        return static_cast<json_reverse_iterator&>(base_iterator::operator++());
+    }
+
+    /// post-decrement (it--)
+    json_reverse_iterator operator--(int)& // NOLINT(cert-dcl21-cpp)
+    {
+        return static_cast<json_reverse_iterator>(base_iterator::operator--(1));
+    }
+
+    /// pre-decrement (--it)
+    json_reverse_iterator& operator--()
+    {
+        return static_cast<json_reverse_iterator&>(base_iterator::operator--());
+    }
+
+    /// add to iterator
+    json_reverse_iterator& operator+=(difference_type i)
+    {
+        return static_cast<json_reverse_iterator&>(base_iterator::operator+=(i));
+    }
+
+    /// add to iterator
+    json_reverse_iterator operator+(difference_type i) const
+    {
+        return static_cast<json_reverse_iterator>(base_iterator::operator+(i));
+    }
+
+    /// subtract from iterator
+    json_reverse_iterator operator-(difference_type i) const
+    {
+        return static_cast<json_reverse_iterator>(base_iterator::operator-(i));
+    }
+
+    /// return difference
+    difference_type operator-(const json_reverse_iterator& other) const
+    {
+        return base_iterator(*this) - base_iterator(other);
+    }
+
+    /// access to successor
+    reference operator[](difference_type n) const
+    {
+        return *(this->operator+(n));
+    }
+
+    /// return the key of an object iterator
+    auto key() const -> decltype(std::declval<Base>().key())
+    {
+        auto it = --this->base();
+        return it.key();
+    }
+
+    /// return the value of an iterator
+    reference value() const
+    {
+        auto it = --this->base();
+        return it.operator * ();
+    }
+};
+
+}  // namespace detail
+NLOHMANN_JSON_NAMESPACE_END
+
+// #include <nlohmann/detail/iterators/primitive_iterator.hpp>
+
+// #include <nlohmann/detail/json_custom_base_class.hpp>
+
+
+#include <type_traits> // conditional, is_same
+
+// #include <nlohmann/detail/abi_macros.hpp>
+
+
+NLOHMANN_JSON_NAMESPACE_BEGIN
+namespace detail
+{
+
+/*!
+@brief Default base class of the @ref basic_json class.
+
+So that the correct implementations of the copy / move ctors / assign operators
+of @ref basic_json do not require complex case distinctions
+(no base class / custom base class used as customization point),
+@ref basic_json always has a base class.
+By default, this class is used because it is empty and thus has no effect
+on the behavior of @ref basic_json.
+*/
+struct json_default_base {};
+
+template<class T>
+using json_base_class = typename std::conditional <
+                        std::is_same<T, void>::value,
+                        json_default_base,
+                        T
+                        >::type;
+
+}  // namespace detail
+NLOHMANN_JSON_NAMESPACE_END
+
+// #include <nlohmann/detail/json_pointer.hpp>
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.2
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013-2022 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+
+
+#include <algorithm> // all_of
+#include <cctype> // isdigit
+#include <cerrno> // errno, ERANGE
+#include <cstdlib> // strtoull
+#ifndef JSON_NO_IO
+    #include <iosfwd> // ostream
+#endif  // JSON_NO_IO
+#include <limits> // max
+#include <numeric> // accumulate
+#include <string> // string
+#include <utility> // move
+#include <vector> // vector
+
+// #include <nlohmann/detail/exceptions.hpp>
+
+// #include <nlohmann/detail/macro_scope.hpp>
+
+// #include <nlohmann/detail/string_concat.hpp>
+
+// #include <nlohmann/detail/string_escape.hpp>
+
+// #include <nlohmann/detail/value_t.hpp>
+
+
+NLOHMANN_JSON_NAMESPACE_BEGIN
+
+/// @brief JSON Pointer defines a string syntax for identifying a specific value within a JSON document
+/// @sa https://json.nlohmann.me/api/json_pointer/
+template<typename RefStringType>
+class json_pointer
+{
+    // allow basic_json to access private members
+    NLOHMANN_BASIC_JSON_TPL_DECLARATION
+    friend class basic_json;
+
+    template<typename>
+    friend class json_pointer;
+
+    template<typename T>
+    struct string_t_helper
+    {
+        using type = T;
+    };
+
+    NLOHMANN_BASIC_JSON_TPL_DECLARATION
+    struct string_t_helper<NLOHMANN_BASIC_JSON_TPL>
+    {
+        using type = StringType;
+    };
+
+  public:
+    // for backwards compatibility accept BasicJsonType
+    using string_t = typename string_t_helper<RefStringType>::type;
+
+    /// @brief create JSON pointer
+    /// @sa https://json.nlohmann.me/api/json_pointer/json_pointer/
+    explicit json_pointer(const string_t& s = "")
+        : reference_tokens(split(s))
+    {}
+
+    /// @brief return a string representation of the JSON pointer
+    /// @sa https://json.nlohmann.me/api/json_pointer/to_string/
+    string_t to_string() const
+    {
+        return std::accumulate(reference_tokens.begin(), reference_tokens.end(),
+                               string_t{},
+                               [](const string_t& a, const string_t& b)
+        {
+            return detail::concat(a, '/', detail::escape(b));
+        });
+    }
+
+    /// @brief return a string representation of the JSON pointer
+    /// @sa https://json.nlohmann.me/api/json_pointer/operator_string/
+    JSON_HEDLEY_DEPRECATED_FOR(3.11.0, to_string())
+    operator string_t() const
+    {
+        return to_string();
+    }
+
+#ifndef JSON_NO_IO
+    /// @brief write string representation of the JSON pointer to stream
+    /// @sa https://json.nlohmann.me/api/basic_json/operator_ltlt/
+    friend std::ostream& operator<<(std::ostream& o, const json_pointer& ptr)
+    {
+        o << ptr.to_string();
+        return o;
+    }
+#endif
+
+    /// @brief append another JSON pointer at the end of this JSON pointer
+    /// @sa https://json.nlohmann.me/api/json_pointer/operator_slasheq/
+    json_pointer& operator/=(const json_pointer& ptr)
+    {
+        reference_tokens.insert(reference_tokens.end(),
+                                ptr.reference_tokens.begin(),
+                                ptr.reference_tokens.end());
+        return *this;
+    }
+
+    /// @brief append an unescaped reference token at the end of this JSON pointer
+    /// @sa https://json.nlohmann.me/api/json_pointer/operator_slasheq/
+    json_pointer& operator/=(string_t token)
+    {
+        push_back(std::move(token));
+        return *this;
+    }
+
+    /// @brief append an array index at the end of this JSON pointer
+    /// @sa https://json.nlohmann.me/api/json_pointer/operator_slasheq/
+    json_pointer& operator/=(std::size_t array_idx)
+    {
+        return *this /= std::to_string(array_idx);
+    }
+
+    /// @brief create a new JSON pointer by appending the right JSON pointer at the end of the left JSON pointer
+    /// @sa https://json.nlohmann.me/api/json_pointer/operator_slash/
+    friend json_pointer operator/(const json_pointer& lhs,
+                                  const json_pointer& rhs)
+    {
+        return json_pointer(lhs) /= rhs;
+    }
+
+    /// @brief create a new JSON pointer by appending the unescaped token at the end of the JSON pointer
+    /// @sa https://json.nlohmann.me/api/json_pointer/operator_slash/
+    friend json_pointer operator/(const json_pointer& lhs, string_t token) // NOLINT(performance-unnecessary-value-param)
+    {
+        return json_pointer(lhs) /= std::move(token);
+    }
+
+    /// @brief create a new JSON pointer by appending the array-index-token at the end of the JSON pointer
+    /// @sa https://json.nlohmann.me/api/json_pointer/operator_slash/
+    friend json_pointer operator/(const json_pointer& lhs, std::size_t array_idx)
+    {
+        return json_pointer(lhs) /= array_idx;
+    }
+
+    /// @brief returns the parent of this JSON pointer
+    /// @sa https://json.nlohmann.me/api/json_pointer/parent_pointer/
+    json_pointer parent_pointer() const
+    {
+        if (empty())
+        {
+            return *this;
+        }
+
+        json_pointer res = *this;
+        res.pop_back();
+        return res;
+    }
+
+    /// @brief remove last reference token
+    /// @sa https://json.nlohmann.me/api/json_pointer/pop_back/
+    void pop_back()
+    {
+        if (JSON_HEDLEY_UNLIKELY(empty()))
+        {
+            JSON_THROW(detail::out_of_range::create(405, "JSON pointer has no parent", nullptr));
+        }
+
+        reference_tokens.pop_back();
+    }
+
+    /// @brief return last reference token
+    /// @sa https://json.nlohmann.me/api/json_pointer/back/
+    const string_t& back() const
+    {
+        if (JSON_HEDLEY_UNLIKELY(empty()))
+        {
+            JSON_THROW(detail::out_of_range::create(405, "JSON pointer has no parent", nullptr));
+        }
+
+        return reference_tokens.back();
+    }
+
+    /// @brief append an unescaped token at the end of the reference pointer
+    /// @sa https://json.nlohmann.me/api/json_pointer/push_back/
+    void push_back(const string_t& token)
+    {
+        reference_tokens.push_back(token);
+    }
+
+    /// @brief append an unescaped token at the end of the reference pointer
+    /// @sa https://json.nlohmann.me/api/json_pointer/push_back/
+    void push_back(string_t&& token)
+    {
+        reference_tokens.push_back(std::move(token));
+    }
+
+    /// @brief return whether pointer points to the root document
+    /// @sa https://json.nlohmann.me/api/json_pointer/empty/
+    bool empty() const noexcept
+    {
+        return reference_tokens.empty();
+    }
+
+  private:
+    /*!
+    @param[in] s  reference token to be converted into an array index
+
+    @return integer representation of @a s
+
+    @throw parse_error.106  if an array index begins with '0'
+    @throw parse_error.109  if an array index begins not with a digit
+    @throw out_of_range.404 if string @a s could not be converted to an integer
+    @throw out_of_range.410 if an array index exceeds size_type
+    */
+    template<typename BasicJsonType>
+    static typename BasicJsonType::size_type array_index(const string_t& s)
+    {
+        using size_type = typename BasicJsonType::size_type;
+
+        // error condition (cf. RFC 6901, Sect. 4)
+        if (JSON_HEDLEY_UNLIKELY(s.size() > 1 && s[0] == '0'))
+        {
+            JSON_THROW(detail::parse_error::create(106, 0, detail::concat("array index '", s, "' must not begin with '0'"), nullptr));
+        }
+
+        // error condition (cf. RFC 6901, Sect. 4)
+        if (JSON_HEDLEY_UNLIKELY(s.size() > 1 && !(s[0] >= '1' && s[0] <= '9')))
+        {
+            JSON_THROW(detail::parse_error::create(109, 0, detail::concat("array index '", s, "' is not a number"), nullptr));
+        }
+
+        const char* p = s.c_str();
+        char* p_end = nullptr;
+        errno = 0; // strtoull doesn't reset errno
+        const unsigned long long res = std::strtoull(p, &p_end, 10); // NOLINT(runtime/int)
+        if (p == p_end // invalid input or empty string
+                || errno == ERANGE // out of range
+                || JSON_HEDLEY_UNLIKELY(static_cast<std::size_t>(p_end - p) != s.size())) // incomplete read
+        {
+            JSON_THROW(detail::out_of_range::create(404, detail::concat("unresolved reference token '", s, "'"), nullptr));
+        }
+
+        // only triggered on special platforms (like 32bit), see also
+        // https://github.com/nlohmann/json/pull/2203
+        if (res >= static_cast<unsigned long long>((std::numeric_limits<size_type>::max)()))  // NOLINT(runtime/int)
+        {
+            JSON_THROW(detail::out_of_range::create(410, detail::concat("array index ", s, " exceeds size_type"), nullptr));   // LCOV_EXCL_LINE
+        }
+
+        return static_cast<size_type>(res);
+    }
+
+  JSON_PRIVATE_UNLESS_TESTED:
+    json_pointer top() const
+    {
+        if (JSON_HEDLEY_UNLIKELY(empty()))
+        {
+            JSON_THROW(detail::out_of_range::create(405, "JSON pointer has no parent", nullptr));
+        }
+
+        json_pointer result = *this;
+        result.reference_tokens = {reference_tokens[0]};
+        return result;
+    }
+
+  private:
+    /*!
+    @brief create and return a reference to the pointed to value
+
+    @complexity Linear in the number of reference tokens.
+
+    @throw parse_error.109 if array index is not a number
+    @throw type_error.313 if value cannot be unflattened
+    */
+    template<typename BasicJsonType>
+    BasicJsonType& get_and_create(BasicJsonType& j) const
+    {
+        auto* result = &j;
+
+        // in case no reference tokens exist, return a reference to the JSON value
+        // j which will be overwritten by a primitive value
+        for (const auto& reference_token : reference_tokens)
+        {
+            switch (result->type())
+            {
+                case detail::value_t::null:
+                {
+                    if (reference_token == "0")
+                    {
+                        // start a new array if reference token is 0
+                        result = &result->operator[](0);
+                    }
+                    else
+                    {
+                        // start a new object otherwise
+                        result = &result->operator[](reference_token);
+                    }
+                    break;
+                }
+
+                case detail::value_t::object:
+                {
+                    // create an entry in the object
+                    result = &result->operator[](reference_token);
+                    break;
+                }
+
+                case detail::value_t::array:
+                {
+                    // create an entry in the array
+                    result = &result->operator[](array_index<BasicJsonType>(reference_token));
+                    break;
+                }
+
+                /*
+                The following code is only reached if there exists a reference
+                token _and_ the current value is primitive. In this case, we have
+                an error situation, because primitive values may only occur as
+                single value; that is, with an empty list of reference tokens.
+                */
+                case detail::value_t::string:
+                case detail::value_t::boolean:
+                case detail::value_t::number_integer:
+                case detail::value_t::number_unsigned:
+                case detail::value_t::number_float:
+                case detail::value_t::binary:
+                case detail::value_t::discarded:
+                default:
+                    JSON_THROW(detail::type_error::create(313, "invalid value to unflatten", &j));
+            }
+        }
+
+        return *result;
+    }
+
+    /*!
+    @brief return a reference to the pointed to value
+
+    @note This version does not throw if a value is not present, but tries to
+          create nested values instead. For instance, calling this function
+          with pointer `"/this/that"` on a null value is equivalent to calling
+          `operator[]("this").operator[]("that")` on that value, effectively
+          changing the null value to an object.
+
+    @param[in] ptr  a JSON value
+
+    @return reference to the JSON value pointed to by the JSON pointer
+
+    @complexity Linear in the length of the JSON pointer.
+
+    @throw parse_error.106   if an array index begins with '0'
+    @throw parse_error.109   if an array index was not a number
+    @throw out_of_range.404  if the JSON pointer can not be resolved
+    */
+    template<typename BasicJsonType>
+    BasicJsonType& get_unchecked(BasicJsonType* ptr) const
+    {
+        for (const auto& reference_token : reference_tokens)
+        {
+            // convert null values to arrays or objects before continuing
+            if (ptr->is_null())
+            {
+                // check if reference token is a number
+                const bool nums =
+                    std::all_of(reference_token.begin(), reference_token.end(),
+                                [](const unsigned char x)
+                {
+                    return std::isdigit(x);
+                });
+
+                // change value to array for numbers or "-" or to object otherwise
+                *ptr = (nums || reference_token == "-")
+                       ? detail::value_t::array
+                       : detail::value_t::object;
+            }
+
+            switch (ptr->type())
+            {
+                case detail::value_t::object:
+                {
+                    // use unchecked object access
+                    ptr = &ptr->operator[](reference_token);
+                    break;
+                }
+
+                case detail::value_t::array:
+                {
+                    if (reference_token == "-")
+                    {
+                        // explicitly treat "-" as index beyond the end
+                        ptr = &ptr->operator[](ptr->m_data.m_value.array->size());
+                    }
+                    else
+                    {
+                        // convert array index to number; unchecked access
+                        ptr = &ptr->operator[](array_index<BasicJsonType>(reference_token));
+                    }
+                    break;
+                }
+
+                case detail::value_t::null:
+                case detail::value_t::string:
+                case detail::value_t::boolean:
+                case detail::value_t::number_integer:
+                case detail::value_t::number_unsigned:
+                case detail::value_t::number_float:
+                case detail::value_t::binary:
+                case detail::value_t::discarded:
+                default:
+                    JSON_THROW(detail::out_of_range::create(404, detail::concat("unresolved reference token '", reference_token, "'"), ptr));
+            }
+        }
+
+        return *ptr;
+    }
+
+    /*!
+    @throw parse_error.106   if an array index begins with '0'
+    @throw parse_error.109   if an array index was not a number
+    @throw out_of_range.402  if the array index '-' is used
+    @throw out_of_range.404  if the JSON pointer can not be resolved
+    */
+    template<typename BasicJsonType>
+    BasicJsonType& get_checked(BasicJsonType* ptr) const
+    {
+        for (const auto& reference_token : reference_tokens)
+        {
+            switch (ptr->type())
+            {
+                case detail::value_t::object:
+                {
+                    // note: at performs range check
+                    ptr = &ptr->at(reference_token);
+                    break;
+                }
+
+                case detail::value_t::array:
+                {
+                    if (JSON_HEDLEY_UNLIKELY(reference_token == "-"))
+                    {
+                        // "-" always fails the range check
+                        JSON_THROW(detail::out_of_range::create(402, detail::concat(
+                                "array index '-' (", std::to_string(ptr->m_data.m_value.array->size()),
+                                ") is out of range"), ptr));
+                    }
+
+                    // note: at performs range check
+                    ptr = &ptr->at(array_index<BasicJsonType>(reference_token));
+                    break;
+                }
+
+                case detail::value_t::null:
+                case detail::value_t::string:
+                case detail::value_t::boolean:
+                case detail::value_t::number_integer:
+                case detail::value_t::number_unsigned:
+                case detail::value_t::number_float:
+                case detail::value_t::binary:
+                case detail::value_t::discarded:
+                default:
+                    JSON_THROW(detail::out_of_range::create(404, detail::concat("unresolved reference token '", reference_token, "'"), ptr));
+            }
+        }
+
+        return *ptr;
+    }
+
+    /*!
+    @brief return a const reference to the pointed to value
+
+    @param[in] ptr  a JSON value
+
+    @return const reference to the JSON value pointed to by the JSON
+    pointer
+
+    @throw parse_error.106   if an array index begins with '0'
+    @throw parse_error.109   if an array index was not a number
+    @throw out_of_range.402  if the array index '-' is used
+    @throw out_of_range.404  if the JSON pointer can not be resolved
+    */
+    template<typename BasicJsonType>
+    const BasicJsonType& get_unchecked(const BasicJsonType* ptr) const
+    {
+        for (const auto& reference_token : reference_tokens)
+        {
+            switch (ptr->type())
+            {
+                case detail::value_t::object:
+                {
+                    // use unchecked object access
+                    ptr = &ptr->operator[](reference_token);
+                    break;
+                }
+
+                case detail::value_t::array:
+                {
+                    if (JSON_HEDLEY_UNLIKELY(reference_token == "-"))
+                    {
+                        // "-" cannot be used for const access
+                        JSON_THROW(detail::out_of_range::create(402, detail::concat("array index '-' (", std::to_string(ptr->m_data.m_value.array->size()), ") is out of range"), ptr));
+                    }
+
+                    // use unchecked array access
+                    ptr = &ptr->operator[](array_index<BasicJsonType>(reference_token));
+                    break;
+                }
+
+                case detail::value_t::null:
+                case detail::value_t::string:
+                case detail::value_t::boolean:
+                case detail::value_t::number_integer:
+                case detail::value_t::number_unsigned:
+                case detail::value_t::number_float:
+                case detail::value_t::binary:
+                case detail::value_t::discarded:
+                default:
+                    JSON_THROW(detail::out_of_range::create(404, detail::concat("unresolved reference token '", reference_token, "'"), ptr));
+            }
+        }
+
+        return *ptr;
+    }
+
+    /*!
+    @throw parse_error.106   if an array index begins with '0'
+    @throw parse_error.109   if an array index was not a number
+    @throw out_of_range.402  if the array index '-' is used
+    @throw out_of_range.404  if the JSON pointer can not be resolved
+    */
+    template<typename BasicJsonType>
+    const BasicJsonType& get_checked(const BasicJsonType* ptr) const
+    {
+        for (const auto& reference_token : reference_tokens)
+        {
+            switch (ptr->type())
+            {
+                case detail::value_t::object:
+                {
+                    // note: at performs range check
+                    ptr = &ptr->at(reference_token);
+                    break;
+                }
+
+                case detail::value_t::array:
+                {
+                    if (JSON_HEDLEY_UNLIKELY(reference_token == "-"))
+                    {
+                        // "-" always fails the range check
+                        JSON_THROW(detail::out_of_range::create(402, detail::concat(
+                                "array index '-' (", std::to_string(ptr->m_data.m_value.array->size()),
+                                ") is out of range"), ptr));
+                    }
+
+                    // note: at performs range check
+                    ptr = &ptr->at(array_index<BasicJsonType>(reference_token));
+                    break;
+                }
+
+                case detail::value_t::null:
+                case detail::value_t::string:
+                case detail::value_t::boolean:
+                case detail::value_t::number_integer:
+                case detail::value_t::number_unsigned:
+                case detail::value_t::number_float:
+                case detail::value_t::binary:
+                case detail::value_t::discarded:
+                default:
+                    JSON_THROW(detail::out_of_range::create(404, detail::concat("unresolved reference token '", reference_token, "'"), ptr));
+            }
+        }
+
+        return *ptr;
+    }
+
+    /*!
+    @throw parse_error.106   if an array index begins with '0'
+    @throw parse_error.109   if an array index was not a number
+    */
+    template<typename BasicJsonType>
+    bool contains(const BasicJsonType* ptr) const
+    {
+        for (const auto& reference_token : reference_tokens)
+        {
+            switch (ptr->type())
+            {
+                case detail::value_t::object:
+                {
+                    if (!ptr->contains(reference_token))
+                    {
+                        // we did not find the key in the object
+                        return false;
+                    }
+
+                    ptr = &ptr->operator[](reference_token);
+                    break;
+                }
+
+                case detail::value_t::array:
+                {
+                    if (JSON_HEDLEY_UNLIKELY(reference_token == "-"))
+                    {
+                        // "-" always fails the range check
+                        return false;
+                    }
+                    if (JSON_HEDLEY_UNLIKELY(reference_token.size() == 1 && !("0" <= reference_token && reference_token <= "9")))
+                    {
+                        // invalid char
+                        return false;
+                    }
+                    if (JSON_HEDLEY_UNLIKELY(reference_token.size() > 1))
+                    {
+                        if (JSON_HEDLEY_UNLIKELY(!('1' <= reference_token[0] && reference_token[0] <= '9')))
+                        {
+                            // first char should be between '1' and '9'
+                            return false;
+                        }
+                        for (std::size_t i = 1; i < reference_token.size(); i++)
+                        {
+                            if (JSON_HEDLEY_UNLIKELY(!('0' <= reference_token[i] && reference_token[i] <= '9')))
+                            {
+                                // other char should be between '0' and '9'
+                                return false;
+                            }
+                        }
+                    }
+
+                    const auto idx = array_index<BasicJsonType>(reference_token);
+                    if (idx >= ptr->size())
+                    {
+                        // index out of range
+                        return false;
+                    }
+
+                    ptr = &ptr->operator[](idx);
+                    break;
+                }
+
+                case detail::value_t::null:
+                case detail::value_t::string:
+                case detail::value_t::boolean:
+                case detail::value_t::number_integer:
+                case detail::value_t::number_unsigned:
+                case detail::value_t::number_float:
+                case detail::value_t::binary:
+                case detail::value_t::discarded:
+                default:
+                {
+                    // we do not expect primitive values if there is still a
+                    // reference token to process
+                    return false;
+                }
+            }
+        }
+
+        // no reference token left means we found a primitive value
+        return true;
+    }
+
+    /*!
+    @brief split the string input to reference tokens
+
+    @note This function is only called by the json_pointer constructor.
+          All exceptions below are documented there.
+
+    @throw parse_error.107  if the pointer is not empty or begins with '/'
+    @throw parse_error.108  if character '~' is not followed by '0' or '1'
+    */
+    static std::vector<string_t> split(const string_t& reference_string)
+    {
+        std::vector<string_t> result;
+
+        // special case: empty reference string -> no reference tokens
+        if (reference_string.empty())
+        {
+            return result;
+        }
+
+        // check if nonempty reference string begins with slash
+        if (JSON_HEDLEY_UNLIKELY(reference_string[0] != '/'))
+        {
+            JSON_THROW(detail::parse_error::create(107, 1, detail::concat("JSON pointer must be empty or begin with '/' - was: '", reference_string, "'"), nullptr));
+        }
+
+        // extract the reference tokens:
+        // - slash: position of the last read slash (or end of string)
+        // - start: position after the previous slash
+        for (
+            // search for the first slash after the first character
+            std::size_t slash = reference_string.find_first_of('/', 1),
+            // set the beginning of the first reference token
+            start = 1;
+            // we can stop if start == 0 (if slash == string_t::npos)
+            start != 0;
+            // set the beginning of the next reference token
+            // (will eventually be 0 if slash == string_t::npos)
+            start = (slash == string_t::npos) ? 0 : slash + 1,
+            // find next slash
+            slash = reference_string.find_first_of('/', start))
+        {
+            // use the text between the beginning of the reference token
+            // (start) and the last slash (slash).
+            auto reference_token = reference_string.substr(start, slash - start);
+
+            // check reference tokens are properly escaped
+            for (std::size_t pos = reference_token.find_first_of('~');
+                    pos != string_t::npos;
+                    pos = reference_token.find_first_of('~', pos + 1))
+            {
+                JSON_ASSERT(reference_token[pos] == '~');
+
+                // ~ must be followed by 0 or 1
+                if (JSON_HEDLEY_UNLIKELY(pos == reference_token.size() - 1 ||
+                                         (reference_token[pos + 1] != '0' &&
+                                          reference_token[pos + 1] != '1')))
+                {
+                    JSON_THROW(detail::parse_error::create(108, 0, "escape character '~' must be followed with '0' or '1'", nullptr));
+                }
+            }
+
+            // finally, store the reference token
+            detail::unescape(reference_token);
+            result.push_back(reference_token);
+        }
+
+        return result;
+    }
+
+  private:
+    /*!
+    @param[in] reference_string  the reference string to the current value
+    @param[in] value             the value to consider
+    @param[in,out] result        the result object to insert values to
+
+    @note Empty objects or arrays are flattened to `null`.
+    */
+    template<typename BasicJsonType>
+    static void flatten(const string_t& reference_string,
+                        const BasicJsonType& value,
+                        BasicJsonType& result)
+    {
+        switch (value.type())
+        {
+            case detail::value_t::array:
+            {
+                if (value.m_data.m_value.array->empty())
+                {
+                    // flatten empty array as null
+                    result[reference_string] = nullptr;
+                }
+                else
+                {
+                    // iterate array and use index as reference string
+                    for (std::size_t i = 0; i < value.m_data.m_value.array->size(); ++i)
+                    {
+                        flatten(detail::concat(reference_string, '/', std::to_string(i)),
+                                value.m_data.m_value.array->operator[](i), result);
+                    }
+                }
+                break;
+            }
+
+            case detail::value_t::object:
+            {
+                if (value.m_data.m_value.object->empty())
+                {
+                    // flatten empty object as null
+                    result[reference_string] = nullptr;
+                }
+                else
+                {
+                    // iterate object and use keys as reference string
+                    for (const auto& element : *value.m_data.m_value.object)
+                    {
+                        flatten(detail::concat(reference_string, '/', detail::escape(element.first)), element.second, result);
+                    }
+                }
+                break;
+            }
+
+            case detail::value_t::null:
+            case detail::value_t::string:
+            case detail::value_t::boolean:
+            case detail::value_t::number_integer:
+            case detail::value_t::number_unsigned:
+            case detail::value_t::number_float:
+            case detail::value_t::binary:
+            case detail::value_t::discarded:
+            default:
+            {
+                // add primitive value with its reference string
+                result[reference_string] = value;
+                break;
+            }
+        }
+    }
+
+    /*!
+    @param[in] value  flattened JSON
+
+    @return unflattened JSON
+
+    @throw parse_error.109 if array index is not a number
+    @throw type_error.314  if value is not an object
+    @throw type_error.315  if object values are not primitive
+    @throw type_error.313  if value cannot be unflattened
+    */
+    template<typename BasicJsonType>
+    static BasicJsonType
+    unflatten(const BasicJsonType& value)
+    {
+        if (JSON_HEDLEY_UNLIKELY(!value.is_object()))
+        {
+            JSON_THROW(detail::type_error::create(314, "only objects can be unflattened", &value));
+        }
+
+        BasicJsonType result;
+
+        // iterate the JSON object values
+        for (const auto& element : *value.m_data.m_value.object)
+        {
+            if (JSON_HEDLEY_UNLIKELY(!element.second.is_primitive()))
+            {
+                JSON_THROW(detail::type_error::create(315, "values in object must be primitive", &element.second));
+            }
+
+            // assign value to reference pointed to by JSON pointer; Note that if
+            // the JSON pointer is "" (i.e., points to the whole value), function
+            // get_and_create returns a reference to result itself. An assignment
+            // will then create a primitive value.
+            json_pointer(element.first).get_and_create(result) = element.second;
+        }
+
+        return result;
+    }
+
+    // can't use conversion operator because of ambiguity
+    json_pointer<string_t> convert() const&
+    {
+        json_pointer<string_t> result;
+        result.reference_tokens = reference_tokens;
+        return result;
+    }
+
+    json_pointer<string_t> convert()&&
+    {
+        json_pointer<string_t> result;
+        result.reference_tokens = std::move(reference_tokens);
+        return result;
+    }
+
+  public:
+#if JSON_HAS_THREE_WAY_COMPARISON
+    /// @brief compares two JSON pointers for equality
+    /// @sa https://json.nlohmann.me/api/json_pointer/operator_eq/
+    template<typename RefStringTypeRhs>
+    bool operator==(const json_pointer<RefStringTypeRhs>& rhs) const noexcept
+    {
+        return reference_tokens == rhs.reference_tokens;
+    }
+
+    /// @brief compares JSON pointer and string for equality
+    /// @sa https://json.nlohmann.me/api/json_pointer/operator_eq/
+    JSON_HEDLEY_DEPRECATED_FOR(3.11.2, operator==(json_pointer))
+    bool operator==(const string_t& rhs) const
+    {
+        return *this == json_pointer(rhs);
+    }
+
+    /// @brief 3-way compares two JSON pointers
+    template<typename RefStringTypeRhs>
+    std::strong_ordering operator<=>(const json_pointer<RefStringTypeRhs>& rhs) const noexcept // *NOPAD*
+    {
+        return  reference_tokens <=> rhs.reference_tokens; // *NOPAD*
+    }
+#else
+    /// @brief compares two JSON pointers for equality
+    /// @sa https://json.nlohmann.me/api/json_pointer/operator_eq/
+    template<typename RefStringTypeLhs, typename RefStringTypeRhs>
+    // NOLINTNEXTLINE(readability-redundant-declaration)
+    friend bool operator==(const json_pointer<RefStringTypeLhs>& lhs,
+                           const json_pointer<RefStringTypeRhs>& rhs) noexcept;
+
+    /// @brief compares JSON pointer and string for equality
+    /// @sa https://json.nlohmann.me/api/json_pointer/operator_eq/
+    template<typename RefStringTypeLhs, typename StringType>
+    // NOLINTNEXTLINE(readability-redundant-declaration)
+    friend bool operator==(const json_pointer<RefStringTypeLhs>& lhs,
+                           const StringType& rhs);
+
+    /// @brief compares string and JSON pointer for equality
+    /// @sa https://json.nlohmann.me/api/json_pointer/operator_eq/
+    template<typename RefStringTypeRhs, typename StringType>
+    // NOLINTNEXTLINE(readability-redundant-declaration)
+    friend bool operator==(const StringType& lhs,
+                           const json_pointer<RefStringTypeRhs>& rhs);
+
+    /// @brief compares two JSON pointers for inequality
+    /// @sa https://json.nlohmann.me/api/json_pointer/operator_ne/
+    template<typename RefStringTypeLhs, typename RefStringTypeRhs>
+    // NOLINTNEXTLINE(readability-redundant-declaration)
+    friend bool operator!=(const json_pointer<RefStringTypeLhs>& lhs,
+                           const json_pointer<RefStringTypeRhs>& rhs) noexcept;
+
+    /// @brief compares JSON pointer and string for inequality
+    /// @sa https://json.nlohmann.me/api/json_pointer/operator_ne/
+    template<typename RefStringTypeLhs, typename StringType>
+    // NOLINTNEXTLINE(readability-redundant-declaration)
+    friend bool operator!=(const json_pointer<RefStringTypeLhs>& lhs,
+                           const StringType& rhs);
+
+    /// @brief compares string and JSON pointer for inequality
+    /// @sa https://json.nlohmann.me/api/json_pointer/operator_ne/
+    template<typename RefStringTypeRhs, typename StringType>
+    // NOLINTNEXTLINE(readability-redundant-declaration)
+    friend bool operator!=(const StringType& lhs,
+                           const json_pointer<RefStringTypeRhs>& rhs);
+
+    /// @brief compares two JSON pointer for less-than
+    template<typename RefStringTypeLhs, typename RefStringTypeRhs>
+    // NOLINTNEXTLINE(readability-redundant-declaration)
+    friend bool operator<(const json_pointer<RefStringTypeLhs>& lhs,
+                          const json_pointer<RefStringTypeRhs>& rhs) noexcept;
+#endif
+
+  private:
+    /// the reference tokens
+    std::vector<string_t> reference_tokens;
+};
+
+#if !JSON_HAS_THREE_WAY_COMPARISON
+// functions cannot be defined inside class due to ODR violations
+template<typename RefStringTypeLhs, typename RefStringTypeRhs>
+inline bool operator==(const json_pointer<RefStringTypeLhs>& lhs,
+                       const json_pointer<RefStringTypeRhs>& rhs) noexcept
+{
+    return lhs.reference_tokens == rhs.reference_tokens;
+}
+
+template<typename RefStringTypeLhs,
+         typename StringType = typename json_pointer<RefStringTypeLhs>::string_t>
+JSON_HEDLEY_DEPRECATED_FOR(3.11.2, operator==(json_pointer, json_pointer))
+inline bool operator==(const json_pointer<RefStringTypeLhs>& lhs,
+                       const StringType& rhs)
+{
+    return lhs == json_pointer<RefStringTypeLhs>(rhs);
+}
+
+template<typename RefStringTypeRhs,
+         typename StringType = typename json_pointer<RefStringTypeRhs>::string_t>
+JSON_HEDLEY_DEPRECATED_FOR(3.11.2, operator==(json_pointer, json_pointer))
+inline bool operator==(const StringType& lhs,
+                       const json_pointer<RefStringTypeRhs>& rhs)
+{
+    return json_pointer<RefStringTypeRhs>(lhs) == rhs;
+}
+
+template<typename RefStringTypeLhs, typename RefStringTypeRhs>
+inline bool operator!=(const json_pointer<RefStringTypeLhs>& lhs,
+                       const json_pointer<RefStringTypeRhs>& rhs) noexcept
+{
+    return !(lhs == rhs);
+}
+
+template<typename RefStringTypeLhs,
+         typename StringType = typename json_pointer<RefStringTypeLhs>::string_t>
+JSON_HEDLEY_DEPRECATED_FOR(3.11.2, operator!=(json_pointer, json_pointer))
+inline bool operator!=(const json_pointer<RefStringTypeLhs>& lhs,
+                       const StringType& rhs)
+{
+    return !(lhs == rhs);
+}
+
+template<typename RefStringTypeRhs,
+         typename StringType = typename json_pointer<RefStringTypeRhs>::string_t>
+JSON_HEDLEY_DEPRECATED_FOR(3.11.2, operator!=(json_pointer, json_pointer))
+inline bool operator!=(const StringType& lhs,
+                       const json_pointer<RefStringTypeRhs>& rhs)
+{
+    return !(lhs == rhs);
+}
+
+template<typename RefStringTypeLhs, typename RefStringTypeRhs>
+inline bool operator<(const json_pointer<RefStringTypeLhs>& lhs,
+                      const json_pointer<RefStringTypeRhs>& rhs) noexcept
+{
+    return lhs.reference_tokens < rhs.reference_tokens;
+}
+#endif
+
+NLOHMANN_JSON_NAMESPACE_END
+
+// #include <nlohmann/detail/json_ref.hpp>
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.2
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013-2022 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+
+
+#include <initializer_list>
+#include <utility>
+
+// #include <nlohmann/detail/abi_macros.hpp>
+
+// #include <nlohmann/detail/meta/type_traits.hpp>
+
+
+NLOHMANN_JSON_NAMESPACE_BEGIN
+namespace detail
+{
+
+template<typename BasicJsonType>
+class json_ref
+{
+  public:
+    using value_type = BasicJsonType;
+
+    json_ref(value_type&& value)
+        : owned_value(std::move(value))
+    {}
+
+    json_ref(const value_type& value)
+        : value_ref(&value)
+    {}
+
+    json_ref(std::initializer_list<json_ref> init)
+        : owned_value(init)
+    {}
+
+    template <
+        class... Args,
+        enable_if_t<std::is_constructible<value_type, Args...>::value, int> = 0 >
+    json_ref(Args && ... args)
+        : owned_value(std::forward<Args>(args)...)
+    {}
+
+    // class should be movable only
+    json_ref(json_ref&&) noexcept = default;
+    json_ref(const json_ref&) = delete;
+    json_ref& operator=(const json_ref&) = delete;
+    json_ref& operator=(json_ref&&) = delete;
+    ~json_ref() = default;
+
+    value_type moved_or_copied() const
+    {
+        if (value_ref == nullptr)
+        {
+            return std::move(owned_value);
+        }
+        return *value_ref;
+    }
+
+    value_type const& operator*() const
+    {
+        return value_ref ? *value_ref : owned_value;
+    }
+
+    value_type const* operator->() const
+    {
+        return &** this;
+    }
+
+  private:
+    mutable value_type owned_value = nullptr;
+    value_type const* value_ref = nullptr;
+};
+
+}  // namespace detail
+NLOHMANN_JSON_NAMESPACE_END
+
+// #include <nlohmann/detail/macro_scope.hpp>
+
+// #include <nlohmann/detail/string_concat.hpp>
+
+// #include <nlohmann/detail/string_escape.hpp>
+
+// #include <nlohmann/detail/meta/cpp_future.hpp>
+
+// #include <nlohmann/detail/meta/type_traits.hpp>
+
+// #include <nlohmann/detail/output/binary_writer.hpp>
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.2
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013-2022 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+
+
+#include <algorithm> // reverse
+#include <array> // array
+#include <map> // map
+#include <cmath> // isnan, isinf
+#include <cstdint> // uint8_t, uint16_t, uint32_t, uint64_t
+#include <cstring> // memcpy
+#include <limits> // numeric_limits
+#include <string> // string
+#include <utility> // move
+#include <vector> // vector
+
+// #include <nlohmann/detail/input/binary_reader.hpp>
+
+// #include <nlohmann/detail/macro_scope.hpp>
+
+// #include <nlohmann/detail/output/output_adapters.hpp>
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.2
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013-2022 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+
+
+#include <algorithm> // copy
+#include <cstddef> // size_t
+#include <iterator> // back_inserter
+#include <memory> // shared_ptr, make_shared
+#include <string> // basic_string
+#include <vector> // vector
+
+#ifndef JSON_NO_IO
+    #include <ios>      // streamsize
+    #include <ostream>  // basic_ostream
+#endif  // JSON_NO_IO
+
+// #include <nlohmann/detail/macro_scope.hpp>
+
+
+NLOHMANN_JSON_NAMESPACE_BEGIN
+namespace detail
+{
+
+/// abstract output adapter interface
+template<typename CharType> struct output_adapter_protocol
+{
+    virtual void write_character(CharType c) = 0;
+    virtual void write_characters(const CharType* s, std::size_t length) = 0;
+    virtual ~output_adapter_protocol() = default;
+
+    output_adapter_protocol() = default;
+    output_adapter_protocol(const output_adapter_protocol&) = default;
+    output_adapter_protocol(output_adapter_protocol&&) noexcept = default;
+    output_adapter_protocol& operator=(const output_adapter_protocol&) = default;
+    output_adapter_protocol& operator=(output_adapter_protocol&&) noexcept = default;
+};
+
+/// a type to simplify interfaces
+template<typename CharType>
+using output_adapter_t = std::shared_ptr<output_adapter_protocol<CharType>>;
+
+/// output adapter for byte vectors
+template<typename CharType, typename AllocatorType = std::allocator<CharType>>
+class output_vector_adapter : public output_adapter_protocol<CharType>
+{
+  public:
+    explicit output_vector_adapter(std::vector<CharType, AllocatorType>& vec) noexcept
+        : v(vec)
+    {}
+
+    void write_character(CharType c) override
+    {
+        v.push_back(c);
+    }
+
+    JSON_HEDLEY_NON_NULL(2)
+    void write_characters(const CharType* s, std::size_t length) override
+    {
+        v.insert(v.end(), s, s + length);
+    }
+
+  private:
+    std::vector<CharType, AllocatorType>& v;
+};
+
+#ifndef JSON_NO_IO
+/// output adapter for output streams
+template<typename CharType>
+class output_stream_adapter : public output_adapter_protocol<CharType>
+{
+  public:
+    explicit output_stream_adapter(std::basic_ostream<CharType>& s) noexcept
+        : stream(s)
+    {}
+
+    void write_character(CharType c) override
+    {
+        stream.put(c);
+    }
+
+    JSON_HEDLEY_NON_NULL(2)
+    void write_characters(const CharType* s, std::size_t length) override
+    {
+        stream.write(s, static_cast<std::streamsize>(length));
+    }
+
+  private:
+    std::basic_ostream<CharType>& stream;
+};
+#endif  // JSON_NO_IO
+
+/// output adapter for basic_string
+template<typename CharType, typename StringType = std::basic_string<CharType>>
+class output_string_adapter : public output_adapter_protocol<CharType>
+{
+  public:
+    explicit output_string_adapter(StringType& s) noexcept
+        : str(s)
+    {}
+
+    void write_character(CharType c) override
+    {
+        str.push_back(c);
+    }
+
+    JSON_HEDLEY_NON_NULL(2)
+    void write_characters(const CharType* s, std::size_t length) override
+    {
+        str.append(s, length);
+    }
+
+  private:
+    StringType& str;
+};
+
+template<typename CharType, typename StringType = std::basic_string<CharType>>
+class output_adapter
+{
+  public:
+    template<typename AllocatorType = std::allocator<CharType>>
+    output_adapter(std::vector<CharType, AllocatorType>& vec)
+        : oa(std::make_shared<output_vector_adapter<CharType, AllocatorType>>(vec)) {}
+
+#ifndef JSON_NO_IO
+    output_adapter(std::basic_ostream<CharType>& s)
+        : oa(std::make_shared<output_stream_adapter<CharType>>(s)) {}
+#endif  // JSON_NO_IO
+
+    output_adapter(StringType& s)
+        : oa(std::make_shared<output_string_adapter<CharType, StringType>>(s)) {}
+
+    operator output_adapter_t<CharType>()
+    {
+        return oa;
+    }
+
+  private:
+    output_adapter_t<CharType> oa = nullptr;
+};
+
+}  // namespace detail
+NLOHMANN_JSON_NAMESPACE_END
+
+// #include <nlohmann/detail/string_concat.hpp>
+
+
+NLOHMANN_JSON_NAMESPACE_BEGIN
+namespace detail
+{
+
+///////////////////
+// binary writer //
+///////////////////
+
+/*!
+@brief serialization to CBOR and MessagePack values
+*/
+template<typename BasicJsonType, typename CharType>
+class binary_writer
+{
+    using string_t = typename BasicJsonType::string_t;
+    using binary_t = typename BasicJsonType::binary_t;
+    using number_float_t = typename BasicJsonType::number_float_t;
+
+  public:
+    /*!
+    @brief create a binary writer
+
+    @param[in] adapter  output adapter to write to
+    */
+    explicit binary_writer(output_adapter_t<CharType> adapter) : oa(std::move(adapter))
+    {
+        JSON_ASSERT(oa);
+    }
+
+    /*!
+    @param[in] j  JSON value to serialize
+    @pre       j.type() == value_t::object
+    */
+    void write_bson(const BasicJsonType& j)
+    {
+        switch (j.type())
+        {
+            case value_t::object:
+            {
+                write_bson_object(*j.m_data.m_value.object);
+                break;
+            }
+
+            case value_t::null:
+            case value_t::array:
+            case value_t::string:
+            case value_t::boolean:
+            case value_t::number_integer:
+            case value_t::number_unsigned:
+            case value_t::number_float:
+            case value_t::binary:
+            case value_t::discarded:
+            default:
+            {
+                JSON_THROW(type_error::create(317, concat("to serialize to BSON, top-level type must be object, but is ", j.type_name()), &j));
+            }
+        }
+    }
+
+    /*!
+    @param[in] j  JSON value to serialize
+    */
+    void write_cbor(const BasicJsonType& j)
+    {
+        switch (j.type())
+        {
+            case value_t::null:
+            {
+                oa->write_character(to_char_type(0xF6));
+                break;
+            }
+
+            case value_t::boolean:
+            {
+                oa->write_character(j.m_data.m_value.boolean
+                                    ? to_char_type(0xF5)
+                                    : to_char_type(0xF4));
+                break;
+            }
+
+            case value_t::number_integer:
+            {
+                if (j.m_data.m_value.number_integer >= 0)
+                {
+                    // CBOR does not differentiate between positive signed
+                    // integers and unsigned integers. Therefore, we used the
+                    // code from the value_t::number_unsigned case here.
+                    if (j.m_data.m_value.number_integer <= 0x17)
+                    {
+                        write_number(static_cast<std::uint8_t>(j.m_data.m_value.number_integer));
+                    }
+                    else if (j.m_data.m_value.number_integer <= (std::numeric_limits<std::uint8_t>::max)())
+                    {
+                        oa->write_character(to_char_type(0x18));
+                        write_number(static_cast<std::uint8_t>(j.m_data.m_value.number_integer));
+                    }
+                    else if (j.m_data.m_value.number_integer <= (std::numeric_limits<std::uint16_t>::max)())
+                    {
+                        oa->write_character(to_char_type(0x19));
+                        write_number(static_cast<std::uint16_t>(j.m_data.m_value.number_integer));
+                    }
+                    else if (j.m_data.m_value.number_integer <= (std::numeric_limits<std::uint32_t>::max)())
+                    {
+                        oa->write_character(to_char_type(0x1A));
+                        write_number(static_cast<std::uint32_t>(j.m_data.m_value.number_integer));
+                    }
+                    else
+                    {
+                        oa->write_character(to_char_type(0x1B));
+                        write_number(static_cast<std::uint64_t>(j.m_data.m_value.number_integer));
+                    }
+                }
+                else
+                {
+                    // The conversions below encode the sign in the first
+                    // byte, and the value is converted to a positive number.
+                    const auto positive_number = -1 - j.m_data.m_value.number_integer;
+                    if (j.m_data.m_value.number_integer >= -24)
+                    {
+                        write_number(static_cast<std::uint8_t>(0x20 + positive_number));
+                    }
+                    else if (positive_number <= (std::numeric_limits<std::uint8_t>::max)())
+                    {
+                        oa->write_character(to_char_type(0x38));
+                        write_number(static_cast<std::uint8_t>(positive_number));
+                    }
+                    else if (positive_number <= (std::numeric_limits<std::uint16_t>::max)())
+                    {
+                        oa->write_character(to_char_type(0x39));
+                        write_number(static_cast<std::uint16_t>(positive_number));
+                    }
+                    else if (positive_number <= (std::numeric_limits<std::uint32_t>::max)())
+                    {
+                        oa->write_character(to_char_type(0x3A));
+                        write_number(static_cast<std::uint32_t>(positive_number));
+                    }
+                    else
+                    {
+                        oa->write_character(to_char_type(0x3B));
+                        write_number(static_cast<std::uint64_t>(positive_number));
+                    }
+                }
+                break;
+            }
+
+            case value_t::number_unsigned:
+            {
+                if (j.m_data.m_value.number_unsigned <= 0x17)
+                {
+                    write_number(static_cast<std::uint8_t>(j.m_data.m_value.number_unsigned));
+                }
+                else if (j.m_data.m_value.number_unsigned <= (std::numeric_limits<std::uint8_t>::max)())
+                {
+                    oa->write_character(to_char_type(0x18));
+                    write_number(static_cast<std::uint8_t>(j.m_data.m_value.number_unsigned));
+                }
+                else if (j.m_data.m_value.number_unsigned <= (std::numeric_limits<std::uint16_t>::max)())
+                {
+                    oa->write_character(to_char_type(0x19));
+                    write_number(static_cast<std::uint16_t>(j.m_data.m_value.number_unsigned));
+                }
+                else if (j.m_data.m_value.number_unsigned <= (std::numeric_limits<std::uint32_t>::max)())
+                {
+                    oa->write_character(to_char_type(0x1A));
+                    write_number(static_cast<std::uint32_t>(j.m_data.m_value.number_unsigned));
+                }
+                else
+                {
+                    oa->write_character(to_char_type(0x1B));
+                    write_number(static_cast<std::uint64_t>(j.m_data.m_value.number_unsigned));
+                }
+                break;
+            }
+
+            case value_t::number_float:
+            {
+                if (std::isnan(j.m_data.m_value.number_float))
+                {
+                    // NaN is 0xf97e00 in CBOR
+                    oa->write_character(to_char_type(0xF9));
+                    oa->write_character(to_char_type(0x7E));
+                    oa->write_character(to_char_type(0x00));
+                }
+                else if (std::isinf(j.m_data.m_value.number_float))
+                {
+                    // Infinity is 0xf97c00, -Infinity is 0xf9fc00
+                    oa->write_character(to_char_type(0xf9));
+                    oa->write_character(j.m_data.m_value.number_float > 0 ? to_char_type(0x7C) : to_char_type(0xFC));
+                    oa->write_character(to_char_type(0x00));
+                }
+                else
+                {
+                    write_compact_float(j.m_data.m_value.number_float, detail::input_format_t::cbor);
+                }
+                break;
+            }
+
+            case value_t::string:
+            {
+                // step 1: write control byte and the string length
+                const auto N = j.m_data.m_value.string->size();
+                if (N <= 0x17)
+                {
+                    write_number(static_cast<std::uint8_t>(0x60 + N));
+                }
+                else if (N <= (std::numeric_limits<std::uint8_t>::max)())
+                {
+                    oa->write_character(to_char_type(0x78));
+                    write_number(static_cast<std::uint8_t>(N));
+                }
+                else if (N <= (std::numeric_limits<std::uint16_t>::max)())
+                {
+                    oa->write_character(to_char_type(0x79));
+                    write_number(static_cast<std::uint16_t>(N));
+                }
+                else if (N <= (std::numeric_limits<std::uint32_t>::max)())
+                {
+                    oa->write_character(to_char_type(0x7A));
+                    write_number(static_cast<std::uint32_t>(N));
+                }
+                // LCOV_EXCL_START
+                else if (N <= (std::numeric_limits<std::uint64_t>::max)())
+                {
+                    oa->write_character(to_char_type(0x7B));
+                    write_number(static_cast<std::uint64_t>(N));
+                }
+                // LCOV_EXCL_STOP
+
+                // step 2: write the string
+                oa->write_characters(
+                    reinterpret_cast<const CharType*>(j.m_data.m_value.string->c_str()),
+                    j.m_data.m_value.string->size());
+                break;
+            }
+
+            case value_t::array:
+            {
+                // step 1: write control byte and the array size
+                const auto N = j.m_data.m_value.array->size();
+                if (N <= 0x17)
+                {
+                    write_number(static_cast<std::uint8_t>(0x80 + N));
+                }
+                else if (N <= (std::numeric_limits<std::uint8_t>::max)())
+                {
+                    oa->write_character(to_char_type(0x98));
+                    write_number(static_cast<std::uint8_t>(N));
+                }
+                else if (N <= (std::numeric_limits<std::uint16_t>::max)())
+                {
+                    oa->write_character(to_char_type(0x99));
+                    write_number(static_cast<std::uint16_t>(N));
+                }
+                else if (N <= (std::numeric_limits<std::uint32_t>::max)())
+                {
+                    oa->write_character(to_char_type(0x9A));
+                    write_number(static_cast<std::uint32_t>(N));
+                }
+                // LCOV_EXCL_START
+                else if (N <= (std::numeric_limits<std::uint64_t>::max)())
+                {
+                    oa->write_character(to_char_type(0x9B));
+                    write_number(static_cast<std::uint64_t>(N));
+                }
+                // LCOV_EXCL_STOP
+
+                // step 2: write each element
+                for (const auto& el : *j.m_data.m_value.array)
+                {
+                    write_cbor(el);
+                }
+                break;
+            }
+
+            case value_t::binary:
+            {
+                if (j.m_data.m_value.binary->has_subtype())
+                {
+                    if (j.m_data.m_value.binary->subtype() <= (std::numeric_limits<std::uint8_t>::max)())
+                    {
+                        write_number(static_cast<std::uint8_t>(0xd8));
+                        write_number(static_cast<std::uint8_t>(j.m_data.m_value.binary->subtype()));
+                    }
+                    else if (j.m_data.m_value.binary->subtype() <= (std::numeric_limits<std::uint16_t>::max)())
+                    {
+                        write_number(static_cast<std::uint8_t>(0xd9));
+                        write_number(static_cast<std::uint16_t>(j.m_data.m_value.binary->subtype()));
+                    }
+                    else if (j.m_data.m_value.binary->subtype() <= (std::numeric_limits<std::uint32_t>::max)())
+                    {
+                        write_number(static_cast<std::uint8_t>(0xda));
+                        write_number(static_cast<std::uint32_t>(j.m_data.m_value.binary->subtype()));
+                    }
+                    else if (j.m_data.m_value.binary->subtype() <= (std::numeric_limits<std::uint64_t>::max)())
+                    {
+                        write_number(static_cast<std::uint8_t>(0xdb));
+                        write_number(static_cast<std::uint64_t>(j.m_data.m_value.binary->subtype()));
+                    }
+                }
+
+                // step 1: write control byte and the binary array size
+                const auto N = j.m_data.m_value.binary->size();
+                if (N <= 0x17)
+                {
+                    write_number(static_cast<std::uint8_t>(0x40 + N));
+                }
+                else if (N <= (std::numeric_limits<std::uint8_t>::max)())
+                {
+                    oa->write_character(to_char_type(0x58));
+                    write_number(static_cast<std::uint8_t>(N));
+                }
+                else if (N <= (std::numeric_limits<std::uint16_t>::max)())
+                {
+                    oa->write_character(to_char_type(0x59));
+                    write_number(static_cast<std::uint16_t>(N));
+                }
+                else if (N <= (std::numeric_limits<std::uint32_t>::max)())
+                {
+                    oa->write_character(to_char_type(0x5A));
+                    write_number(static_cast<std::uint32_t>(N));
+                }
+                // LCOV_EXCL_START
+                else if (N <= (std::numeric_limits<std::uint64_t>::max)())
+                {
+                    oa->write_character(to_char_type(0x5B));
+                    write_number(static_cast<std::uint64_t>(N));
+                }
+                // LCOV_EXCL_STOP
+
+                // step 2: write each element
+                oa->write_characters(
+                    reinterpret_cast<const CharType*>(j.m_data.m_value.binary->data()),
+                    N);
+
+                break;
+            }
+
+            case value_t::object:
+            {
+                // step 1: write control byte and the object size
+                const auto N = j.m_data.m_value.object->size();
+                if (N <= 0x17)
+                {
+                    write_number(static_cast<std::uint8_t>(0xA0 + N));
+                }
+                else if (N <= (std::numeric_limits<std::uint8_t>::max)())
+                {
+                    oa->write_character(to_char_type(0xB8));
+                    write_number(static_cast<std::uint8_t>(N));
+                }
+                else if (N <= (std::numeric_limits<std::uint16_t>::max)())
+                {
+                    oa->write_character(to_char_type(0xB9));
+                    write_number(static_cast<std::uint16_t>(N));
+                }
+                else if (N <= (std::numeric_limits<std::uint32_t>::max)())
+                {
+                    oa->write_character(to_char_type(0xBA));
+                    write_number(static_cast<std::uint32_t>(N));
+                }
+                // LCOV_EXCL_START
+                else if (N <= (std::numeric_limits<std::uint64_t>::max)())
+                {
+                    oa->write_character(to_char_type(0xBB));
+                    write_number(static_cast<std::uint64_t>(N));
+                }
+                // LCOV_EXCL_STOP
+
+                // step 2: write each element
+                for (const auto& el : *j.m_data.m_value.object)
+                {
+                    write_cbor(el.first);
+                    write_cbor(el.second);
+                }
+                break;
+            }
+
+            case value_t::discarded:
+            default:
+                break;
+        }
+    }
+
+    /*!
+    @param[in] j  JSON value to serialize
+    */
+    void write_msgpack(const BasicJsonType& j)
+    {
+        switch (j.type())
+        {
+            case value_t::null: // nil
+            {
+                oa->write_character(to_char_type(0xC0));
+                break;
+            }
+
+            case value_t::boolean: // true and false
+            {
+                oa->write_character(j.m_data.m_value.boolean
+                                    ? to_char_type(0xC3)
+                                    : to_char_type(0xC2));
+                break;
+            }
+
+            case value_t::number_integer:
+            {
+                if (j.m_data.m_value.number_integer >= 0)
+                {
+                    // MessagePack does not differentiate between positive
+                    // signed integers and unsigned integers. Therefore, we used
+                    // the code from the value_t::number_unsigned case here.
+                    if (j.m_data.m_value.number_unsigned < 128)
+                    {
+                        // positive fixnum
+                        write_number(static_cast<std::uint8_t>(j.m_data.m_value.number_integer));
+                    }
+                    else if (j.m_data.m_value.number_unsigned <= (std::numeric_limits<std::uint8_t>::max)())
+                    {
+                        // uint 8
+                        oa->write_character(to_char_type(0xCC));
+                        write_number(static_cast<std::uint8_t>(j.m_data.m_value.number_integer));
+                    }
+                    else if (j.m_data.m_value.number_unsigned <= (std::numeric_limits<std::uint16_t>::max)())
+                    {
+                        // uint 16
+                        oa->write_character(to_char_type(0xCD));
+                        write_number(static_cast<std::uint16_t>(j.m_data.m_value.number_integer));
+                    }
+                    else if (j.m_data.m_value.number_unsigned <= (std::numeric_limits<std::uint32_t>::max)())
+                    {
+                        // uint 32
+                        oa->write_character(to_char_type(0xCE));
+                        write_number(static_cast<std::uint32_t>(j.m_data.m_value.number_integer));
+                    }
+                    else if (j.m_data.m_value.number_unsigned <= (std::numeric_limits<std::uint64_t>::max)())
+                    {
+                        // uint 64
+                        oa->write_character(to_char_type(0xCF));
+                        write_number(static_cast<std::uint64_t>(j.m_data.m_value.number_integer));
+                    }
+                }
+                else
+                {
+                    if (j.m_data.m_value.number_integer >= -32)
+                    {
+                        // negative fixnum
+                        write_number(static_cast<std::int8_t>(j.m_data.m_value.number_integer));
+                    }
+                    else if (j.m_data.m_value.number_integer >= (std::numeric_limits<std::int8_t>::min)() &&
+                             j.m_data.m_value.number_integer <= (std::numeric_limits<std::int8_t>::max)())
+                    {
+                        // int 8
+                        oa->write_character(to_char_type(0xD0));
+                        write_number(static_cast<std::int8_t>(j.m_data.m_value.number_integer));
+                    }
+                    else if (j.m_data.m_value.number_integer >= (std::numeric_limits<std::int16_t>::min)() &&
+                             j.m_data.m_value.number_integer <= (std::numeric_limits<std::int16_t>::max)())
+                    {
+                        // int 16
+                        oa->write_character(to_char_type(0xD1));
+                        write_number(static_cast<std::int16_t>(j.m_data.m_value.number_integer));
+                    }
+                    else if (j.m_data.m_value.number_integer >= (std::numeric_limits<std::int32_t>::min)() &&
+                             j.m_data.m_value.number_integer <= (std::numeric_limits<std::int32_t>::max)())
+                    {
+                        // int 32
+                        oa->write_character(to_char_type(0xD2));
+                        write_number(static_cast<std::int32_t>(j.m_data.m_value.number_integer));
+                    }
+                    else if (j.m_data.m_value.number_integer >= (std::numeric_limits<std::int64_t>::min)() &&
+                             j.m_data.m_value.number_integer <= (std::numeric_limits<std::int64_t>::max)())
+                    {
+                        // int 64
+                        oa->write_character(to_char_type(0xD3));
+                        write_number(static_cast<std::int64_t>(j.m_data.m_value.number_integer));
+                    }
+                }
+                break;
+            }
+
+            case value_t::number_unsigned:
+            {
+                if (j.m_data.m_value.number_unsigned < 128)
+                {
+                    // positive fixnum
+                    write_number(static_cast<std::uint8_t>(j.m_data.m_value.number_integer));
+                }
+                else if (j.m_data.m_value.number_unsigned <= (std::numeric_limits<std::uint8_t>::max)())
+                {
+                    // uint 8
+                    oa->write_character(to_char_type(0xCC));
+                    write_number(static_cast<std::uint8_t>(j.m_data.m_value.number_integer));
+                }
+                else if (j.m_data.m_value.number_unsigned <= (std::numeric_limits<std::uint16_t>::max)())
+                {
+                    // uint 16
+                    oa->write_character(to_char_type(0xCD));
+                    write_number(static_cast<std::uint16_t>(j.m_data.m_value.number_integer));
+                }
+                else if (j.m_data.m_value.number_unsigned <= (std::numeric_limits<std::uint32_t>::max)())
+                {
+                    // uint 32
+                    oa->write_character(to_char_type(0xCE));
+                    write_number(static_cast<std::uint32_t>(j.m_data.m_value.number_integer));
+                }
+                else if (j.m_data.m_value.number_unsigned <= (std::numeric_limits<std::uint64_t>::max)())
+                {
+                    // uint 64
+                    oa->write_character(to_char_type(0xCF));
+                    write_number(static_cast<std::uint64_t>(j.m_data.m_value.number_integer));
+                }
+                break;
+            }
+
+            case value_t::number_float:
+            {
+                write_compact_float(j.m_data.m_value.number_float, detail::input_format_t::msgpack);
+                break;
+            }
+
+            case value_t::string:
+            {
+                // step 1: write control byte and the string length
+                const auto N = j.m_data.m_value.string->size();
+                if (N <= 31)
+                {
+                    // fixstr
+                    write_number(static_cast<std::uint8_t>(0xA0 | N));
+                }
+                else if (N <= (std::numeric_limits<std::uint8_t>::max)())
+                {
+                    // str 8
+                    oa->write_character(to_char_type(0xD9));
+                    write_number(static_cast<std::uint8_t>(N));
+                }
+                else if (N <= (std::numeric_limits<std::uint16_t>::max)())
+                {
+                    // str 16
+                    oa->write_character(to_char_type(0xDA));
+                    write_number(static_cast<std::uint16_t>(N));
+                }
+                else if (N <= (std::numeric_limits<std::uint32_t>::max)())
+                {
+                    // str 32
+                    oa->write_character(to_char_type(0xDB));
+                    write_number(static_cast<std::uint32_t>(N));
+                }
+
+                // step 2: write the string
+                oa->write_characters(
+                    reinterpret_cast<const CharType*>(j.m_data.m_value.string->c_str()),
+                    j.m_data.m_value.string->size());
+                break;
+            }
+
+            case value_t::array:
+            {
+                // step 1: write control byte and the array size
+                const auto N = j.m_data.m_value.array->size();
+                if (N <= 15)
+                {
+                    // fixarray
+                    write_number(static_cast<std::uint8_t>(0x90 | N));
+                }
+                else if (N <= (std::numeric_limits<std::uint16_t>::max)())
+                {
+                    // array 16
+                    oa->write_character(to_char_type(0xDC));
+                    write_number(static_cast<std::uint16_t>(N));
+                }
+                else if (N <= (std::numeric_limits<std::uint32_t>::max)())
+                {
+                    // array 32
+                    oa->write_character(to_char_type(0xDD));
+                    write_number(static_cast<std::uint32_t>(N));
+                }
+
+                // step 2: write each element
+                for (const auto& el : *j.m_data.m_value.array)
+                {
+                    write_msgpack(el);
+                }
+                break;
+            }
+
+            case value_t::binary:
+            {
+                // step 0: determine if the binary type has a set subtype to
+                // determine whether or not to use the ext or fixext types
+                const bool use_ext = j.m_data.m_value.binary->has_subtype();
+
+                // step 1: write control byte and the byte string length
+                const auto N = j.m_data.m_value.binary->size();
+                if (N <= (std::numeric_limits<std::uint8_t>::max)())
+                {
+                    std::uint8_t output_type{};
+                    bool fixed = true;
+                    if (use_ext)
+                    {
+                        switch (N)
+                        {
+                            case 1:
+                                output_type = 0xD4; // fixext 1
+                                break;
+                            case 2:
+                                output_type = 0xD5; // fixext 2
+                                break;
+                            case 4:
+                                output_type = 0xD6; // fixext 4
+                                break;
+                            case 8:
+                                output_type = 0xD7; // fixext 8
+                                break;
+                            case 16:
+                                output_type = 0xD8; // fixext 16
+                                break;
+                            default:
+                                output_type = 0xC7; // ext 8
+                                fixed = false;
+                                break;
+                        }
+
+                    }
+                    else
+                    {
+                        output_type = 0xC4; // bin 8
+                        fixed = false;
+                    }
+
+                    oa->write_character(to_char_type(output_type));
+                    if (!fixed)
+                    {
+                        write_number(static_cast<std::uint8_t>(N));
+                    }
+                }
+                else if (N <= (std::numeric_limits<std::uint16_t>::max)())
+                {
+                    const std::uint8_t output_type = use_ext
+                                                     ? 0xC8 // ext 16
+                                                     : 0xC5; // bin 16
+
+                    oa->write_character(to_char_type(output_type));
+                    write_number(static_cast<std::uint16_t>(N));
+                }
+                else if (N <= (std::numeric_limits<std::uint32_t>::max)())
+                {
+                    const std::uint8_t output_type = use_ext
+                                                     ? 0xC9 // ext 32
+                                                     : 0xC6; // bin 32
+
+                    oa->write_character(to_char_type(output_type));
+                    write_number(static_cast<std::uint32_t>(N));
+                }
+
+                // step 1.5: if this is an ext type, write the subtype
+                if (use_ext)
+                {
+                    write_number(static_cast<std::int8_t>(j.m_data.m_value.binary->subtype()));
+                }
+
+                // step 2: write the byte string
+                oa->write_characters(
+                    reinterpret_cast<const CharType*>(j.m_data.m_value.binary->data()),
+                    N);
+
+                break;
+            }
+
+            case value_t::object:
+            {
+                // step 1: write control byte and the object size
+                const auto N = j.m_data.m_value.object->size();
+                if (N <= 15)
+                {
+                    // fixmap
+                    write_number(static_cast<std::uint8_t>(0x80 | (N & 0xF)));
+                }
+                else if (N <= (std::numeric_limits<std::uint16_t>::max)())
+                {
+                    // map 16
+                    oa->write_character(to_char_type(0xDE));
+                    write_number(static_cast<std::uint16_t>(N));
+                }
+                else if (N <= (std::numeric_limits<std::uint32_t>::max)())
+                {
+                    // map 32
+                    oa->write_character(to_char_type(0xDF));
+                    write_number(static_cast<std::uint32_t>(N));
+                }
+
+                // step 2: write each element
+                for (const auto& el : *j.m_data.m_value.object)
+                {
+                    write_msgpack(el.first);
+                    write_msgpack(el.second);
+                }
+                break;
+            }
+
+            case value_t::discarded:
+            default:
+                break;
+        }
+    }
+
+    /*!
+    @param[in] j  JSON value to serialize
+    @param[in] use_count   whether to use '#' prefixes (optimized format)
+    @param[in] use_type    whether to use '$' prefixes (optimized format)
+    @param[in] add_prefix  whether prefixes need to be used for this value
+    @param[in] use_bjdata  whether write in BJData format, default is false
+    */
+    void write_ubjson(const BasicJsonType& j, const bool use_count,
+                      const bool use_type, const bool add_prefix = true,
+                      const bool use_bjdata = false)
+    {
+        switch (j.type())
+        {
+            case value_t::null:
+            {
+                if (add_prefix)
+                {
+                    oa->write_character(to_char_type('Z'));
+                }
+                break;
+            }
+
+            case value_t::boolean:
+            {
+                if (add_prefix)
+                {
+                    oa->write_character(j.m_data.m_value.boolean
+                                        ? to_char_type('T')
+                                        : to_char_type('F'));
+                }
+                break;
+            }
+
+            case value_t::number_integer:
+            {
+                write_number_with_ubjson_prefix(j.m_data.m_value.number_integer, add_prefix, use_bjdata);
+                break;
+            }
+
+            case value_t::number_unsigned:
+            {
+                write_number_with_ubjson_prefix(j.m_data.m_value.number_unsigned, add_prefix, use_bjdata);
+                break;
+            }
+
+            case value_t::number_float:
+            {
+                write_number_with_ubjson_prefix(j.m_data.m_value.number_float, add_prefix, use_bjdata);
+                break;
+            }
+
+            case value_t::string:
+            {
+                if (add_prefix)
+                {
+                    oa->write_character(to_char_type('S'));
+                }
+                write_number_with_ubjson_prefix(j.m_data.m_value.string->size(), true, use_bjdata);
+                oa->write_characters(
+                    reinterpret_cast<const CharType*>(j.m_data.m_value.string->c_str()),
+                    j.m_data.m_value.string->size());
+                break;
+            }
+
+            case value_t::array:
+            {
+                if (add_prefix)
+                {
+                    oa->write_character(to_char_type('['));
+                }
+
+                bool prefix_required = true;
+                if (use_type && !j.m_data.m_value.array->empty())
+                {
+                    JSON_ASSERT(use_count);
+                    const CharType first_prefix = ubjson_prefix(j.front(), use_bjdata);
+                    const bool same_prefix = std::all_of(j.begin() + 1, j.end(),
+                                                         [this, first_prefix, use_bjdata](const BasicJsonType & v)
+                    {
+                        return ubjson_prefix(v, use_bjdata) == first_prefix;
+                    });
+
+                    std::vector<CharType> bjdx = {'[', '{', 'S', 'H', 'T', 'F', 'N', 'Z'}; // excluded markers in bjdata optimized type
+
+                    if (same_prefix && !(use_bjdata && std::find(bjdx.begin(), bjdx.end(), first_prefix) != bjdx.end()))
+                    {
+                        prefix_required = false;
+                        oa->write_character(to_char_type('$'));
+                        oa->write_character(first_prefix);
+                    }
+                }
+
+                if (use_count)
+                {
+                    oa->write_character(to_char_type('#'));
+                    write_number_with_ubjson_prefix(j.m_data.m_value.array->size(), true, use_bjdata);
+                }
+
+                for (const auto& el : *j.m_data.m_value.array)
+                {
+                    write_ubjson(el, use_count, use_type, prefix_required, use_bjdata);
+                }
+
+                if (!use_count)
+                {
+                    oa->write_character(to_char_type(']'));
+                }
+
+                break;
+            }
+
+            case value_t::binary:
+            {
+                if (add_prefix)
+                {
+                    oa->write_character(to_char_type('['));
+                }
+
+                if (use_type && !j.m_data.m_value.binary->empty())
+                {
+                    JSON_ASSERT(use_count);
+                    oa->write_character(to_char_type('$'));
+                    oa->write_character('U');
+                }
+
+                if (use_count)
+                {
+                    oa->write_character(to_char_type('#'));
+                    write_number_with_ubjson_prefix(j.m_data.m_value.binary->size(), true, use_bjdata);
+                }
+
+                if (use_type)
+                {
+                    oa->write_characters(
+                        reinterpret_cast<const CharType*>(j.m_data.m_value.binary->data()),
+                        j.m_data.m_value.binary->size());
+                }
+                else
+                {
+                    for (size_t i = 0; i < j.m_data.m_value.binary->size(); ++i)
+                    {
+                        oa->write_character(to_char_type('U'));
+                        oa->write_character(j.m_data.m_value.binary->data()[i]);
+                    }
+                }
+
+                if (!use_count)
+                {
+                    oa->write_character(to_char_type(']'));
+                }
+
+                break;
+            }
+
+            case value_t::object:
+            {
+                if (use_bjdata && j.m_data.m_value.object->size() == 3 && j.m_data.m_value.object->find("_ArrayType_") != j.m_data.m_value.object->end() && j.m_data.m_value.object->find("_ArraySize_") != j.m_data.m_value.object->end() && j.m_data.m_value.object->find("_ArrayData_") != j.m_data.m_value.object->end())
+                {
+                    if (!write_bjdata_ndarray(*j.m_data.m_value.object, use_count, use_type))  // decode bjdata ndarray in the JData format (https://github.com/NeuroJSON/jdata)
+                    {
+                        break;
+                    }
+                }
+
+                if (add_prefix)
+                {
+                    oa->write_character(to_char_type('{'));
+                }
+
+                bool prefix_required = true;
+                if (use_type && !j.m_data.m_value.object->empty())
+                {
+                    JSON_ASSERT(use_count);
+                    const CharType first_prefix = ubjson_prefix(j.front(), use_bjdata);
+                    const bool same_prefix = std::all_of(j.begin(), j.end(),
+                                                         [this, first_prefix, use_bjdata](const BasicJsonType & v)
+                    {
+                        return ubjson_prefix(v, use_bjdata) == first_prefix;
+                    });
+
+                    std::vector<CharType> bjdx = {'[', '{', 'S', 'H', 'T', 'F', 'N', 'Z'}; // excluded markers in bjdata optimized type
+
+                    if (same_prefix && !(use_bjdata && std::find(bjdx.begin(), bjdx.end(), first_prefix) != bjdx.end()))
+                    {
+                        prefix_required = false;
+                        oa->write_character(to_char_type('$'));
+                        oa->write_character(first_prefix);
+                    }
+                }
+
+                if (use_count)
+                {
+                    oa->write_character(to_char_type('#'));
+                    write_number_with_ubjson_prefix(j.m_data.m_value.object->size(), true, use_bjdata);
+                }
+
+                for (const auto& el : *j.m_data.m_value.object)
+                {
+                    write_number_with_ubjson_prefix(el.first.size(), true, use_bjdata);
+                    oa->write_characters(
+                        reinterpret_cast<const CharType*>(el.first.c_str()),
+                        el.first.size());
+                    write_ubjson(el.second, use_count, use_type, prefix_required, use_bjdata);
+                }
+
+                if (!use_count)
+                {
+                    oa->write_character(to_char_type('}'));
+                }
+
+                break;
+            }
+
+            case value_t::discarded:
+            default:
+                break;
+        }
+    }
+
+  private:
+    //////////
+    // BSON //
+    //////////
+
+    /*!
+    @return The size of a BSON document entry header, including the id marker
+            and the entry name size (and its null-terminator).
+    */
+    static std::size_t calc_bson_entry_header_size(const string_t& name, const BasicJsonType& j)
+    {
+        const auto it = name.find(static_cast<typename string_t::value_type>(0));
+        if (JSON_HEDLEY_UNLIKELY(it != BasicJsonType::string_t::npos))
+        {
+            JSON_THROW(out_of_range::create(409, concat("BSON key cannot contain code point U+0000 (at byte ", std::to_string(it), ")"), &j));
+            static_cast<void>(j);
+        }
+
+        return /*id*/ 1ul + name.size() + /*zero-terminator*/1u;
+    }
+
+    /*!
+    @brief Writes the given @a element_type and @a name to the output adapter
+    */
+    void write_bson_entry_header(const string_t& name,
+                                 const std::uint8_t element_type)
+    {
+        oa->write_character(to_char_type(element_type)); // boolean
+        oa->write_characters(
+            reinterpret_cast<const CharType*>(name.c_str()),
+            name.size() + 1u);
+    }
+
+    /*!
+    @brief Writes a BSON element with key @a name and boolean value @a value
+    */
+    void write_bson_boolean(const string_t& name,
+                            const bool value)
+    {
+        write_bson_entry_header(name, 0x08);
+        oa->write_character(value ? to_char_type(0x01) : to_char_type(0x00));
+    }
+
+    /*!
+    @brief Writes a BSON element with key @a name and double value @a value
+    */
+    void write_bson_double(const string_t& name,
+                           const double value)
+    {
+        write_bson_entry_header(name, 0x01);
+        write_number<double>(value, true);
+    }
+
+    /*!
+    @return The size of the BSON-encoded string in @a value
+    */
+    static std::size_t calc_bson_string_size(const string_t& value)
+    {
+        return sizeof(std::int32_t) + value.size() + 1ul;
+    }
+
+    /*!
+    @brief Writes a BSON element with key @a name and string value @a value
+    */
+    void write_bson_string(const string_t& name,
+                           const string_t& value)
+    {
+        write_bson_entry_header(name, 0x02);
+
+        write_number<std::int32_t>(static_cast<std::int32_t>(value.size() + 1ul), true);
+        oa->write_characters(
+            reinterpret_cast<const CharType*>(value.c_str()),
+            value.size() + 1);
+    }
+
+    /*!
+    @brief Writes a BSON element with key @a name and null value
+    */
+    void write_bson_null(const string_t& name)
+    {
+        write_bson_entry_header(name, 0x0A);
+    }
+
+    /*!
+    @return The size of the BSON-encoded integer @a value
+    */
+    static std::size_t calc_bson_integer_size(const std::int64_t value)
+    {
+        return (std::numeric_limits<std::int32_t>::min)() <= value && value <= (std::numeric_limits<std::int32_t>::max)()
+               ? sizeof(std::int32_t)
+               : sizeof(std::int64_t);
+    }
+
+    /*!
+    @brief Writes a BSON element with key @a name and integer @a value
+    */
+    void write_bson_integer(const string_t& name,
+                            const std::int64_t value)
+    {
+        if ((std::numeric_limits<std::int32_t>::min)() <= value && value <= (std::numeric_limits<std::int32_t>::max)())
+        {
+            write_bson_entry_header(name, 0x10); // int32
+            write_number<std::int32_t>(static_cast<std::int32_t>(value), true);
+        }
+        else
+        {
+            write_bson_entry_header(name, 0x12); // int64
+            write_number<std::int64_t>(static_cast<std::int64_t>(value), true);
+        }
+    }
+
+    /*!
+    @return The size of the BSON-encoded unsigned integer in @a j
+    */
+    static constexpr std::size_t calc_bson_unsigned_size(const std::uint64_t value) noexcept
+    {
+        return (value <= static_cast<std::uint64_t>((std::numeric_limits<std::int32_t>::max)()))
+               ? sizeof(std::int32_t)
+               : sizeof(std::int64_t);
+    }
+
+    /*!
+    @brief Writes a BSON element with key @a name and unsigned @a value
+    */
+    void write_bson_unsigned(const string_t& name,
+                             const BasicJsonType& j)
+    {
+        if (j.m_data.m_value.number_unsigned <= static_cast<std::uint64_t>((std::numeric_limits<std::int32_t>::max)()))
+        {
+            write_bson_entry_header(name, 0x10 /* int32 */);
+            write_number<std::int32_t>(static_cast<std::int32_t>(j.m_data.m_value.number_unsigned), true);
+        }
+        else if (j.m_data.m_value.number_unsigned <= static_cast<std::uint64_t>((std::numeric_limits<std::int64_t>::max)()))
+        {
+            write_bson_entry_header(name, 0x12 /* int64 */);
+            write_number<std::int64_t>(static_cast<std::int64_t>(j.m_data.m_value.number_unsigned), true);
+        }
+        else
+        {
+            JSON_THROW(out_of_range::create(407, concat("integer number ", std::to_string(j.m_data.m_value.number_unsigned), " cannot be represented by BSON as it does not fit int64"), &j));
+        }
+    }
+
+    /*!
+    @brief Writes a BSON element with key @a name and object @a value
+    */
+    void write_bson_object_entry(const string_t& name,
+                                 const typename BasicJsonType::object_t& value)
+    {
+        write_bson_entry_header(name, 0x03); // object
+        write_bson_object(value);
+    }
+
+    /*!
+    @return The size of the BSON-encoded array @a value
+    */
+    static std::size_t calc_bson_array_size(const typename BasicJsonType::array_t& value)
+    {
+        std::size_t array_index = 0ul;
+
+        const std::size_t embedded_document_size = std::accumulate(std::begin(value), std::end(value), static_cast<std::size_t>(0), [&array_index](std::size_t result, const typename BasicJsonType::array_t::value_type & el)
+        {
+            return result + calc_bson_element_size(std::to_string(array_index++), el);
+        });
+
+        return sizeof(std::int32_t) + embedded_document_size + 1ul;
+    }
+
+    /*!
+    @return The size of the BSON-encoded binary array @a value
+    */
+    static std::size_t calc_bson_binary_size(const typename BasicJsonType::binary_t& value)
+    {
+        return sizeof(std::int32_t) + value.size() + 1ul;
+    }
+
+    /*!
+    @brief Writes a BSON element with key @a name and array @a value
+    */
+    void write_bson_array(const string_t& name,
+                          const typename BasicJsonType::array_t& value)
+    {
+        write_bson_entry_header(name, 0x04); // array
+        write_number<std::int32_t>(static_cast<std::int32_t>(calc_bson_array_size(value)), true);
+
+        std::size_t array_index = 0ul;
+
+        for (const auto& el : value)
+        {
+            write_bson_element(std::to_string(array_index++), el);
+        }
+
+        oa->write_character(to_char_type(0x00));
+    }
+
+    /*!
+    @brief Writes a BSON element with key @a name and binary value @a value
+    */
+    void write_bson_binary(const string_t& name,
+                           const binary_t& value)
+    {
+        write_bson_entry_header(name, 0x05);
+
+        write_number<std::int32_t>(static_cast<std::int32_t>(value.size()), true);
+        write_number(value.has_subtype() ? static_cast<std::uint8_t>(value.subtype()) : static_cast<std::uint8_t>(0x00));
+
+        oa->write_characters(reinterpret_cast<const CharType*>(value.data()), value.size());
+    }
+
+    /*!
+    @brief Calculates the size necessary to serialize the JSON value @a j with its @a name
+    @return The calculated size for the BSON document entry for @a j with the given @a name.
+    */
+    static std::size_t calc_bson_element_size(const string_t& name,
+            const BasicJsonType& j)
+    {
+        const auto header_size = calc_bson_entry_header_size(name, j);
+        switch (j.type())
+        {
+            case value_t::object:
+                return header_size + calc_bson_object_size(*j.m_data.m_value.object);
+
+            case value_t::array:
+                return header_size + calc_bson_array_size(*j.m_data.m_value.array);
+
+            case value_t::binary:
+                return header_size + calc_bson_binary_size(*j.m_data.m_value.binary);
+
+            case value_t::boolean:
+                return header_size + 1ul;
+
+            case value_t::number_float:
+                return header_size + 8ul;
+
+            case value_t::number_integer:
+                return header_size + calc_bson_integer_size(j.m_data.m_value.number_integer);
+
+            case value_t::number_unsigned:
+                return header_size + calc_bson_unsigned_size(j.m_data.m_value.number_unsigned);
+
+            case value_t::string:
+                return header_size + calc_bson_string_size(*j.m_data.m_value.string);
+
+            case value_t::null:
+                return header_size + 0ul;
+
+            // LCOV_EXCL_START
+            case value_t::discarded:
+            default:
+                JSON_ASSERT(false); // NOLINT(cert-dcl03-c,hicpp-static-assert,misc-static-assert)
+                return 0ul;
+                // LCOV_EXCL_STOP
+        }
+    }
+
+    /*!
+    @brief Serializes the JSON value @a j to BSON and associates it with the
+           key @a name.
+    @param name The name to associate with the JSON entity @a j within the
+                current BSON document
+    */
+    void write_bson_element(const string_t& name,
+                            const BasicJsonType& j)
+    {
+        switch (j.type())
+        {
+            case value_t::object:
+                return write_bson_object_entry(name, *j.m_data.m_value.object);
+
+            case value_t::array:
+                return write_bson_array(name, *j.m_data.m_value.array);
+
+            case value_t::binary:
+                return write_bson_binary(name, *j.m_data.m_value.binary);
+
+            case value_t::boolean:
+                return write_bson_boolean(name, j.m_data.m_value.boolean);
+
+            case value_t::number_float:
+                return write_bson_double(name, j.m_data.m_value.number_float);
+
+            case value_t::number_integer:
+                return write_bson_integer(name, j.m_data.m_value.number_integer);
+
+            case value_t::number_unsigned:
+                return write_bson_unsigned(name, j);
+
+            case value_t::string:
+                return write_bson_string(name, *j.m_data.m_value.string);
+
+            case value_t::null:
+                return write_bson_null(name);
+
+            // LCOV_EXCL_START
+            case value_t::discarded:
+            default:
+                JSON_ASSERT(false); // NOLINT(cert-dcl03-c,hicpp-static-assert,misc-static-assert)
+                return;
+                // LCOV_EXCL_STOP
+        }
+    }
+
+    /*!
+    @brief Calculates the size of the BSON serialization of the given
+           JSON-object @a j.
+    @param[in] value  JSON value to serialize
+    @pre       value.type() == value_t::object
+    */
+    static std::size_t calc_bson_object_size(const typename BasicJsonType::object_t& value)
+    {
+        const std::size_t document_size = std::accumulate(value.begin(), value.end(), static_cast<std::size_t>(0),
+                                          [](size_t result, const typename BasicJsonType::object_t::value_type & el)
+        {
+            return result += calc_bson_element_size(el.first, el.second);
+        });
+
+        return sizeof(std::int32_t) + document_size + 1ul;
+    }
+
+    /*!
+    @param[in] value  JSON value to serialize
+    @pre       value.type() == value_t::object
+    */
+    void write_bson_object(const typename BasicJsonType::object_t& value)
+    {
+        write_number<std::int32_t>(static_cast<std::int32_t>(calc_bson_object_size(value)), true);
+
+        for (const auto& el : value)
+        {
+            write_bson_element(el.first, el.second);
+        }
+
+        oa->write_character(to_char_type(0x00));
+    }
+
+    //////////
+    // CBOR //
+    //////////
+
+    static constexpr CharType get_cbor_float_prefix(float /*unused*/)
+    {
+        return to_char_type(0xFA);  // Single-Precision Float
+    }
+
+    static constexpr CharType get_cbor_float_prefix(double /*unused*/)
+    {
+        return to_char_type(0xFB);  // Double-Precision Float
+    }
+
+    /////////////
+    // MsgPack //
+    /////////////
+
+    static constexpr CharType get_msgpack_float_prefix(float /*unused*/)
+    {
+        return to_char_type(0xCA);  // float 32
+    }
+
+    static constexpr CharType get_msgpack_float_prefix(double /*unused*/)
+    {
+        return to_char_type(0xCB);  // float 64
+    }
+
+    ////////////
+    // UBJSON //
+    ////////////
+
+    // UBJSON: write number (floating point)
+    template<typename NumberType, typename std::enable_if<
+                 std::is_floating_point<NumberType>::value, int>::type = 0>
+    void write_number_with_ubjson_prefix(const NumberType n,
+                                         const bool add_prefix,
+                                         const bool use_bjdata)
+    {
+        if (add_prefix)
+        {
+            oa->write_character(get_ubjson_float_prefix(n));
+        }
+        write_number(n, use_bjdata);
+    }
+
+    // UBJSON: write number (unsigned integer)
+    template<typename NumberType, typename std::enable_if<
+                 std::is_unsigned<NumberType>::value, int>::type = 0>
+    void write_number_with_ubjson_prefix(const NumberType n,
+                                         const bool add_prefix,
+                                         const bool use_bjdata)
+    {
+        if (n <= static_cast<std::uint64_t>((std::numeric_limits<std::int8_t>::max)()))
+        {
+            if (add_prefix)
+            {
+                oa->write_character(to_char_type('i'));  // int8
+            }
+            write_number(static_cast<std::uint8_t>(n), use_bjdata);
+        }
+        else if (n <= (std::numeric_limits<std::uint8_t>::max)())
+        {
+            if (add_prefix)
+            {
+                oa->write_character(to_char_type('U'));  // uint8
+            }
+            write_number(static_cast<std::uint8_t>(n), use_bjdata);
+        }
+        else if (n <= static_cast<std::uint64_t>((std::numeric_limits<std::int16_t>::max)()))
+        {
+            if (add_prefix)
+            {
+                oa->write_character(to_char_type('I'));  // int16
+            }
+            write_number(static_cast<std::int16_t>(n), use_bjdata);
+        }
+        else if (use_bjdata && n <= static_cast<uint64_t>((std::numeric_limits<uint16_t>::max)()))
+        {
+            if (add_prefix)
+            {
+                oa->write_character(to_char_type('u'));  // uint16 - bjdata only
+            }
+            write_number(static_cast<std::uint16_t>(n), use_bjdata);
+        }
+        else if (n <= static_cast<std::uint64_t>((std::numeric_limits<std::int32_t>::max)()))
+        {
+            if (add_prefix)
+            {
+                oa->write_character(to_char_type('l'));  // int32
+            }
+            write_number(static_cast<std::int32_t>(n), use_bjdata);
+        }
+        else if (use_bjdata && n <= static_cast<uint64_t>((std::numeric_limits<uint32_t>::max)()))
+        {
+            if (add_prefix)
+            {
+                oa->write_character(to_char_type('m'));  // uint32 - bjdata only
+            }
+            write_number(static_cast<std::uint32_t>(n), use_bjdata);
+        }
+        else if (n <= static_cast<std::uint64_t>((std::numeric_limits<std::int64_t>::max)()))
+        {
+            if (add_prefix)
+            {
+                oa->write_character(to_char_type('L'));  // int64
+            }
+            write_number(static_cast<std::int64_t>(n), use_bjdata);
+        }
+        else if (use_bjdata && n <= (std::numeric_limits<uint64_t>::max)())
+        {
+            if (add_prefix)
+            {
+                oa->write_character(to_char_type('M'));  // uint64 - bjdata only
+            }
+            write_number(static_cast<std::uint64_t>(n), use_bjdata);
+        }
+        else
+        {
+            if (add_prefix)
+            {
+                oa->write_character(to_char_type('H'));  // high-precision number
+            }
+
+            const auto number = BasicJsonType(n).dump();
+            write_number_with_ubjson_prefix(number.size(), true, use_bjdata);
+            for (std::size_t i = 0; i < number.size(); ++i)
+            {
+                oa->write_character(to_char_type(static_cast<std::uint8_t>(number[i])));
+            }
+        }
+    }
+
+    // UBJSON: write number (signed integer)
+    template < typename NumberType, typename std::enable_if <
+                   std::is_signed<NumberType>::value&&
+                   !std::is_floating_point<NumberType>::value, int >::type = 0 >
+    void write_number_with_ubjson_prefix(const NumberType n,
+                                         const bool add_prefix,
+                                         const bool use_bjdata)
+    {
+        if ((std::numeric_limits<std::int8_t>::min)() <= n && n <= (std::numeric_limits<std::int8_t>::max)())
+        {
+            if (add_prefix)
+            {
+                oa->write_character(to_char_type('i'));  // int8
+            }
+            write_number(static_cast<std::int8_t>(n), use_bjdata);
+        }
+        else if (static_cast<std::int64_t>((std::numeric_limits<std::uint8_t>::min)()) <= n && n <= static_cast<std::int64_t>((std::numeric_limits<std::uint8_t>::max)()))
+        {
+            if (add_prefix)
+            {
+                oa->write_character(to_char_type('U'));  // uint8
+            }
+            write_number(static_cast<std::uint8_t>(n), use_bjdata);
+        }
+        else if ((std::numeric_limits<std::int16_t>::min)() <= n && n <= (std::numeric_limits<std::int16_t>::max)())
+        {
+            if (add_prefix)
+            {
+                oa->write_character(to_char_type('I'));  // int16
+            }
+            write_number(static_cast<std::int16_t>(n), use_bjdata);
+        }
+        else if (use_bjdata && (static_cast<std::int64_t>((std::numeric_limits<std::uint16_t>::min)()) <= n && n <= static_cast<std::int64_t>((std::numeric_limits<std::uint16_t>::max)())))
+        {
+            if (add_prefix)
+            {
+                oa->write_character(to_char_type('u'));  // uint16 - bjdata only
+            }
+            write_number(static_cast<uint16_t>(n), use_bjdata);
+        }
+        else if ((std::numeric_limits<std::int32_t>::min)() <= n && n <= (std::numeric_limits<std::int32_t>::max)())
+        {
+            if (add_prefix)
+            {
+                oa->write_character(to_char_type('l'));  // int32
+            }
+            write_number(static_cast<std::int32_t>(n), use_bjdata);
+        }
+        else if (use_bjdata && (static_cast<std::int64_t>((std::numeric_limits<std::uint32_t>::min)()) <= n && n <= static_cast<std::int64_t>((std::numeric_limits<std::uint32_t>::max)())))
+        {
+            if (add_prefix)
+            {
+                oa->write_character(to_char_type('m'));  // uint32 - bjdata only
+            }
+            write_number(static_cast<uint32_t>(n), use_bjdata);
+        }
+        else if ((std::numeric_limits<std::int64_t>::min)() <= n && n <= (std::numeric_limits<std::int64_t>::max)())
+        {
+            if (add_prefix)
+            {
+                oa->write_character(to_char_type('L'));  // int64
+            }
+            write_number(static_cast<std::int64_t>(n), use_bjdata);
+        }
+        // LCOV_EXCL_START
+        else
+        {
+            if (add_prefix)
+            {
+                oa->write_character(to_char_type('H'));  // high-precision number
+            }
+
+            const auto number = BasicJsonType(n).dump();
+            write_number_with_ubjson_prefix(number.size(), true, use_bjdata);
+            for (std::size_t i = 0; i < number.size(); ++i)
+            {
+                oa->write_character(to_char_type(static_cast<std::uint8_t>(number[i])));
+            }
+        }
+        // LCOV_EXCL_STOP
+    }
+
+    /*!
+    @brief determine the type prefix of container values
+    */
+    CharType ubjson_prefix(const BasicJsonType& j, const bool use_bjdata) const noexcept
+    {
+        switch (j.type())
+        {
+            case value_t::null:
+                return 'Z';
+
+            case value_t::boolean:
+                return j.m_data.m_value.boolean ? 'T' : 'F';
+
+            case value_t::number_integer:
+            {
+                if ((std::numeric_limits<std::int8_t>::min)() <= j.m_data.m_value.number_integer && j.m_data.m_value.number_integer <= (std::numeric_limits<std::int8_t>::max)())
+                {
+                    return 'i';
+                }
+                if ((std::numeric_limits<std::uint8_t>::min)() <= j.m_data.m_value.number_integer && j.m_data.m_value.number_integer <= (std::numeric_limits<std::uint8_t>::max)())
+                {
+                    return 'U';
+                }
+                if ((std::numeric_limits<std::int16_t>::min)() <= j.m_data.m_value.number_integer && j.m_data.m_value.number_integer <= (std::numeric_limits<std::int16_t>::max)())
+                {
+                    return 'I';
+                }
+                if (use_bjdata && ((std::numeric_limits<std::uint16_t>::min)() <= j.m_data.m_value.number_integer && j.m_data.m_value.number_integer <= (std::numeric_limits<std::uint16_t>::max)()))
+                {
+                    return 'u';
+                }
+                if ((std::numeric_limits<std::int32_t>::min)() <= j.m_data.m_value.number_integer && j.m_data.m_value.number_integer <= (std::numeric_limits<std::int32_t>::max)())
+                {
+                    return 'l';
+                }
+                if (use_bjdata && ((std::numeric_limits<std::uint32_t>::min)() <= j.m_data.m_value.number_integer && j.m_data.m_value.number_integer <= (std::numeric_limits<std::uint32_t>::max)()))
+                {
+                    return 'm';
+                }
+                if ((std::numeric_limits<std::int64_t>::min)() <= j.m_data.m_value.number_integer && j.m_data.m_value.number_integer <= (std::numeric_limits<std::int64_t>::max)())
+                {
+                    return 'L';
+                }
+                // anything else is treated as high-precision number
+                return 'H'; // LCOV_EXCL_LINE
+            }
+
+            case value_t::number_unsigned:
+            {
+                if (j.m_data.m_value.number_unsigned <= static_cast<std::uint64_t>((std::numeric_limits<std::int8_t>::max)()))
+                {
+                    return 'i';
+                }
+                if (j.m_data.m_value.number_unsigned <= static_cast<std::uint64_t>((std::numeric_limits<std::uint8_t>::max)()))
+                {
+                    return 'U';
+                }
+                if (j.m_data.m_value.number_unsigned <= static_cast<std::uint64_t>((std::numeric_limits<std::int16_t>::max)()))
+                {
+                    return 'I';
+                }
+                if (use_bjdata && j.m_data.m_value.number_unsigned <= static_cast<std::uint64_t>((std::numeric_limits<std::uint16_t>::max)()))
+                {
+                    return 'u';
+                }
+                if (j.m_data.m_value.number_unsigned <= static_cast<std::uint64_t>((std::numeric_limits<std::int32_t>::max)()))
+                {
+                    return 'l';
+                }
+                if (use_bjdata && j.m_data.m_value.number_unsigned <= static_cast<std::uint64_t>((std::numeric_limits<std::uint32_t>::max)()))
+                {
+                    return 'm';
+                }
+                if (j.m_data.m_value.number_unsigned <= static_cast<std::uint64_t>((std::numeric_limits<std::int64_t>::max)()))
+                {
+                    return 'L';
+                }
+                if (use_bjdata && j.m_data.m_value.number_unsigned <= (std::numeric_limits<std::uint64_t>::max)())
+                {
+                    return 'M';
+                }
+                // anything else is treated as high-precision number
+                return 'H'; // LCOV_EXCL_LINE
+            }
+
+            case value_t::number_float:
+                return get_ubjson_float_prefix(j.m_data.m_value.number_float);
+
+            case value_t::string:
+                return 'S';
+
+            case value_t::array: // fallthrough
+            case value_t::binary:
+                return '[';
+
+            case value_t::object:
+                return '{';
+
+            case value_t::discarded:
+            default:  // discarded values
+                return 'N';
+        }
+    }
+
+    static constexpr CharType get_ubjson_float_prefix(float /*unused*/)
+    {
+        return 'd';  // float 32
+    }
+
+    static constexpr CharType get_ubjson_float_prefix(double /*unused*/)
+    {
+        return 'D';  // float 64
+    }
+
+    /*!
+    @return false if the object is successfully converted to a bjdata ndarray, true if the type or size is invalid
+    */
+    bool write_bjdata_ndarray(const typename BasicJsonType::object_t& value, const bool use_count, const bool use_type)
+    {
+        std::map<string_t, CharType> bjdtype = {{"uint8", 'U'},  {"int8", 'i'},  {"uint16", 'u'}, {"int16", 'I'},
+            {"uint32", 'm'}, {"int32", 'l'}, {"uint64", 'M'}, {"int64", 'L'}, {"single", 'd'}, {"double", 'D'}, {"char", 'C'}
+        };
+
+        string_t key = "_ArrayType_";
+        auto it = bjdtype.find(static_cast<string_t>(value.at(key)));
+        if (it == bjdtype.end())
+        {
+            return true;
+        }
+        CharType dtype = it->second;
+
+        key = "_ArraySize_";
+        std::size_t len = (value.at(key).empty() ? 0 : 1);
+        for (const auto& el : value.at(key))
+        {
+            len *= static_cast<std::size_t>(el.m_data.m_value.number_unsigned);
+        }
+
+        key = "_ArrayData_";
+        if (value.at(key).size() != len)
+        {
+            return true;
+        }
+
+        oa->write_character('[');
+        oa->write_character('$');
+        oa->write_character(dtype);
+        oa->write_character('#');
+
+        key = "_ArraySize_";
+        write_ubjson(value.at(key), use_count, use_type, true,  true);
+
+        key = "_ArrayData_";
+        if (dtype == 'U' || dtype == 'C')
+        {
+            for (const auto& el : value.at(key))
+            {
+                write_number(static_cast<std::uint8_t>(el.m_data.m_value.number_unsigned), true);
+            }
+        }
+        else if (dtype == 'i')
+        {
+            for (const auto& el : value.at(key))
+            {
+                write_number(static_cast<std::int8_t>(el.m_data.m_value.number_integer), true);
+            }
+        }
+        else if (dtype == 'u')
+        {
+            for (const auto& el : value.at(key))
+            {
+                write_number(static_cast<std::uint16_t>(el.m_data.m_value.number_unsigned), true);
+            }
+        }
+        else if (dtype == 'I')
+        {
+            for (const auto& el : value.at(key))
+            {
+                write_number(static_cast<std::int16_t>(el.m_data.m_value.number_integer), true);
+            }
+        }
+        else if (dtype == 'm')
+        {
+            for (const auto& el : value.at(key))
+            {
+                write_number(static_cast<std::uint32_t>(el.m_data.m_value.number_unsigned), true);
+            }
+        }
+        else if (dtype == 'l')
+        {
+            for (const auto& el : value.at(key))
+            {
+                write_number(static_cast<std::int32_t>(el.m_data.m_value.number_integer), true);
+            }
+        }
+        else if (dtype == 'M')
+        {
+            for (const auto& el : value.at(key))
+            {
+                write_number(static_cast<std::uint64_t>(el.m_data.m_value.number_unsigned), true);
+            }
+        }
+        else if (dtype == 'L')
+        {
+            for (const auto& el : value.at(key))
+            {
+                write_number(static_cast<std::int64_t>(el.m_data.m_value.number_integer), true);
+            }
+        }
+        else if (dtype == 'd')
+        {
+            for (const auto& el : value.at(key))
+            {
+                write_number(static_cast<float>(el.m_data.m_value.number_float), true);
+            }
+        }
+        else if (dtype == 'D')
+        {
+            for (const auto& el : value.at(key))
+            {
+                write_number(static_cast<double>(el.m_data.m_value.number_float), true);
+            }
+        }
+        return false;
+    }
+
+    ///////////////////////
+    // Utility functions //
+    ///////////////////////
+
+    /*
+    @brief write a number to output input
+    @param[in] n number of type @a NumberType
+    @param[in] OutputIsLittleEndian Set to true if output data is
+                                 required to be little endian
+    @tparam NumberType the type of the number
+
+    @note This function needs to respect the system's endianness, because bytes
+          in CBOR, MessagePack, and UBJSON are stored in network order (big
+          endian) and therefore need reordering on little endian systems.
+          On the other hand, BSON and BJData use little endian and should reorder
+          on big endian systems.
+    */
+    template<typename NumberType>
+    void write_number(const NumberType n, const bool OutputIsLittleEndian = false)
+    {
+        // step 1: write number to array of length NumberType
+        std::array<CharType, sizeof(NumberType)> vec{};
+        std::memcpy(vec.data(), &n, sizeof(NumberType));
+
+        // step 2: write array to output (with possible reordering)
+        if (is_little_endian != OutputIsLittleEndian)
+        {
+            // reverse byte order prior to conversion if necessary
+            std::reverse(vec.begin(), vec.end());
+        }
+
+        oa->write_characters(vec.data(), sizeof(NumberType));
+    }
+
+    void write_compact_float(const number_float_t n, detail::input_format_t format)
+    {
+#ifdef __GNUC__
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wfloat-equal"
+#endif
+        if (static_cast<double>(n) >= static_cast<double>(std::numeric_limits<float>::lowest()) &&
+                static_cast<double>(n) <= static_cast<double>((std::numeric_limits<float>::max)()) &&
+                static_cast<double>(static_cast<float>(n)) == static_cast<double>(n))
+        {
+            oa->write_character(format == detail::input_format_t::cbor
+                                ? get_cbor_float_prefix(static_cast<float>(n))
+                                : get_msgpack_float_prefix(static_cast<float>(n)));
+            write_number(static_cast<float>(n));
+        }
+        else
+        {
+            oa->write_character(format == detail::input_format_t::cbor
+                                ? get_cbor_float_prefix(n)
+                                : get_msgpack_float_prefix(n));
+            write_number(n);
+        }
+#ifdef __GNUC__
+#pragma GCC diagnostic pop
+#endif
+    }
+
+  public:
+    // The following to_char_type functions are implement the conversion
+    // between uint8_t and CharType. In case CharType is not unsigned,
+    // such a conversion is required to allow values greater than 128.
+    // See <https://github.com/nlohmann/json/issues/1286> for a discussion.
+    template < typename C = CharType,
+               enable_if_t < std::is_signed<C>::value && std::is_signed<char>::value > * = nullptr >
+    static constexpr CharType to_char_type(std::uint8_t x) noexcept
+    {
+        return *reinterpret_cast<char*>(&x);
+    }
+
+    template < typename C = CharType,
+               enable_if_t < std::is_signed<C>::value && std::is_unsigned<char>::value > * = nullptr >
+    static CharType to_char_type(std::uint8_t x) noexcept
+    {
+        static_assert(sizeof(std::uint8_t) == sizeof(CharType), "size of CharType must be equal to std::uint8_t");
+        static_assert(std::is_trivial<CharType>::value, "CharType must be trivial");
+        CharType result;
+        std::memcpy(&result, &x, sizeof(x));
+        return result;
+    }
+
+    template<typename C = CharType,
+             enable_if_t<std::is_unsigned<C>::value>* = nullptr>
+    static constexpr CharType to_char_type(std::uint8_t x) noexcept
+    {
+        return x;
+    }
+
+    template < typename InputCharType, typename C = CharType,
+               enable_if_t <
+                   std::is_signed<C>::value &&
+                   std::is_signed<char>::value &&
+                   std::is_same<char, typename std::remove_cv<InputCharType>::type>::value
+                   > * = nullptr >
+    static constexpr CharType to_char_type(InputCharType x) noexcept
+    {
+        return x;
+    }
+
+  private:
+    /// whether we can assume little endianness
+    const bool is_little_endian = little_endianness();
+
+    /// the output
+    output_adapter_t<CharType> oa = nullptr;
+};
+
+}  // namespace detail
+NLOHMANN_JSON_NAMESPACE_END
+
+// #include <nlohmann/detail/output/output_adapters.hpp>
+
+// #include <nlohmann/detail/output/serializer.hpp>
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.2
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2008-2009 Björn Hoehrmann <bjoern@hoehrmann.de>
+// SPDX-FileCopyrightText: 2013-2022 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+
+
+#include <algorithm> // reverse, remove, fill, find, none_of
+#include <array> // array
+#include <clocale> // localeconv, lconv
+#include <cmath> // labs, isfinite, isnan, signbit
+#include <cstddef> // size_t, ptrdiff_t
+#include <cstdint> // uint8_t
+#include <cstdio> // snprintf
+#include <limits> // numeric_limits
+#include <string> // string, char_traits
+#include <iomanip> // setfill, setw
+#include <type_traits> // is_same
+#include <utility> // move
+
+// #include <nlohmann/detail/conversions/to_chars.hpp>
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.2
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2009 Florian Loitsch <https://florian.loitsch.com/>
+// SPDX-FileCopyrightText: 2013-2022 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+
+
+#include <array> // array
+#include <cmath>   // signbit, isfinite
+#include <cstdint> // intN_t, uintN_t
+#include <cstring> // memcpy, memmove
+#include <limits> // numeric_limits
+#include <type_traits> // conditional
+
+// #include <nlohmann/detail/macro_scope.hpp>
+
+
+NLOHMANN_JSON_NAMESPACE_BEGIN
+namespace detail
+{
+
+/*!
+@brief implements the Grisu2 algorithm for binary to decimal floating-point
+conversion.
+
+This implementation is a slightly modified version of the reference
+implementation which may be obtained from
+http://florian.loitsch.com/publications (bench.tar.gz).
+
+The code is distributed under the MIT license, Copyright (c) 2009 Florian Loitsch.
+
+For a detailed description of the algorithm see:
+
+[1] Loitsch, "Printing Floating-Point Numbers Quickly and Accurately with
+    Integers", Proceedings of the ACM SIGPLAN 2010 Conference on Programming
+    Language Design and Implementation, PLDI 2010
+[2] Burger, Dybvig, "Printing Floating-Point Numbers Quickly and Accurately",
+    Proceedings of the ACM SIGPLAN 1996 Conference on Programming Language
+    Design and Implementation, PLDI 1996
+*/
+namespace dtoa_impl
+{
+
+template<typename Target, typename Source>
+Target reinterpret_bits(const Source source)
+{
+    static_assert(sizeof(Target) == sizeof(Source), "size mismatch");
+
+    Target target;
+    std::memcpy(&target, &source, sizeof(Source));
+    return target;
+}
+
+struct diyfp // f * 2^e
+{
+    static constexpr int kPrecision = 64; // = q
+
+    std::uint64_t f = 0;
+    int e = 0;
+
+    constexpr diyfp(std::uint64_t f_, int e_) noexcept : f(f_), e(e_) {}
+
+    /*!
+    @brief returns x - y
+    @pre x.e == y.e and x.f >= y.f
+    */
+    static diyfp sub(const diyfp& x, const diyfp& y) noexcept
+    {
+        JSON_ASSERT(x.e == y.e);
+        JSON_ASSERT(x.f >= y.f);
+
+        return {x.f - y.f, x.e};
+    }
+
+    /*!
+    @brief returns x * y
+    @note The result is rounded. (Only the upper q bits are returned.)
+    */
+    static diyfp mul(const diyfp& x, const diyfp& y) noexcept
+    {
+        static_assert(kPrecision == 64, "internal error");
+
+        // Computes:
+        //  f = round((x.f * y.f) / 2^q)
+        //  e = x.e + y.e + q
+
+        // Emulate the 64-bit * 64-bit multiplication:
+        //
+        // p = u * v
+        //   = (u_lo + 2^32 u_hi) (v_lo + 2^32 v_hi)
+        //   = (u_lo v_lo         ) + 2^32 ((u_lo v_hi         ) + (u_hi v_lo         )) + 2^64 (u_hi v_hi         )
+        //   = (p0                ) + 2^32 ((p1                ) + (p2                )) + 2^64 (p3                )
+        //   = (p0_lo + 2^32 p0_hi) + 2^32 ((p1_lo + 2^32 p1_hi) + (p2_lo + 2^32 p2_hi)) + 2^64 (p3                )
+        //   = (p0_lo             ) + 2^32 (p0_hi + p1_lo + p2_lo                      ) + 2^64 (p1_hi + p2_hi + p3)
+        //   = (p0_lo             ) + 2^32 (Q                                          ) + 2^64 (H                 )
+        //   = (p0_lo             ) + 2^32 (Q_lo + 2^32 Q_hi                           ) + 2^64 (H                 )
+        //
+        // (Since Q might be larger than 2^32 - 1)
+        //
+        //   = (p0_lo + 2^32 Q_lo) + 2^64 (Q_hi + H)
+        //
+        // (Q_hi + H does not overflow a 64-bit int)
+        //
+        //   = p_lo + 2^64 p_hi
+
+        const std::uint64_t u_lo = x.f & 0xFFFFFFFFu;
+        const std::uint64_t u_hi = x.f >> 32u;
+        const std::uint64_t v_lo = y.f & 0xFFFFFFFFu;
+        const std::uint64_t v_hi = y.f >> 32u;
+
+        const std::uint64_t p0 = u_lo * v_lo;
+        const std::uint64_t p1 = u_lo * v_hi;
+        const std::uint64_t p2 = u_hi * v_lo;
+        const std::uint64_t p3 = u_hi * v_hi;
+
+        const std::uint64_t p0_hi = p0 >> 32u;
+        const std::uint64_t p1_lo = p1 & 0xFFFFFFFFu;
+        const std::uint64_t p1_hi = p1 >> 32u;
+        const std::uint64_t p2_lo = p2 & 0xFFFFFFFFu;
+        const std::uint64_t p2_hi = p2 >> 32u;
+
+        std::uint64_t Q = p0_hi + p1_lo + p2_lo;
+
+        // The full product might now be computed as
+        //
+        // p_hi = p3 + p2_hi + p1_hi + (Q >> 32)
+        // p_lo = p0_lo + (Q << 32)
+        //
+        // But in this particular case here, the full p_lo is not required.
+        // Effectively we only need to add the highest bit in p_lo to p_hi (and
+        // Q_hi + 1 does not overflow).
+
+        Q += std::uint64_t{1} << (64u - 32u - 1u); // round, ties up
+
+        const std::uint64_t h = p3 + p2_hi + p1_hi + (Q >> 32u);
+
+        return {h, x.e + y.e + 64};
+    }
+
+    /*!
+    @brief normalize x such that the significand is >= 2^(q-1)
+    @pre x.f != 0
+    */
+    static diyfp normalize(diyfp x) noexcept
+    {
+        JSON_ASSERT(x.f != 0);
+
+        while ((x.f >> 63u) == 0)
+        {
+            x.f <<= 1u;
+            x.e--;
+        }
+
+        return x;
+    }
+
+    /*!
+    @brief normalize x such that the result has the exponent E
+    @pre e >= x.e and the upper e - x.e bits of x.f must be zero.
+    */
+    static diyfp normalize_to(const diyfp& x, const int target_exponent) noexcept
+    {
+        const int delta = x.e - target_exponent;
+
+        JSON_ASSERT(delta >= 0);
+        JSON_ASSERT(((x.f << delta) >> delta) == x.f);
+
+        return {x.f << delta, target_exponent};
+    }
+};
+
+struct boundaries
+{
+    diyfp w;
+    diyfp minus;
+    diyfp plus;
+};
+
+/*!
+Compute the (normalized) diyfp representing the input number 'value' and its
+boundaries.
+
+@pre value must be finite and positive
+*/
+template<typename FloatType>
+boundaries compute_boundaries(FloatType value)
+{
+    JSON_ASSERT(std::isfinite(value));
+    JSON_ASSERT(value > 0);
+
+    // Convert the IEEE representation into a diyfp.
+    //
+    // If v is denormal:
+    //      value = 0.F * 2^(1 - bias) = (          F) * 2^(1 - bias - (p-1))
+    // If v is normalized:
+    //      value = 1.F * 2^(E - bias) = (2^(p-1) + F) * 2^(E - bias - (p-1))
+
+    static_assert(std::numeric_limits<FloatType>::is_iec559,
+                  "internal error: dtoa_short requires an IEEE-754 floating-point implementation");
+
+    constexpr int      kPrecision = std::numeric_limits<FloatType>::digits; // = p (includes the hidden bit)
+    constexpr int      kBias      = std::numeric_limits<FloatType>::max_exponent - 1 + (kPrecision - 1);
+    constexpr int      kMinExp    = 1 - kBias;
+    constexpr std::uint64_t kHiddenBit = std::uint64_t{1} << (kPrecision - 1); // = 2^(p-1)
+
+    using bits_type = typename std::conditional<kPrecision == 24, std::uint32_t, std::uint64_t >::type;
+
+    const auto bits = static_cast<std::uint64_t>(reinterpret_bits<bits_type>(value));
+    const std::uint64_t E = bits >> (kPrecision - 1);
+    const std::uint64_t F = bits & (kHiddenBit - 1);
+
+    const bool is_denormal = E == 0;
+    const diyfp v = is_denormal
+                    ? diyfp(F, kMinExp)
+                    : diyfp(F + kHiddenBit, static_cast<int>(E) - kBias);
+
+    // Compute the boundaries m- and m+ of the floating-point value
+    // v = f * 2^e.
+    //
+    // Determine v- and v+, the floating-point predecessor and successor if v,
+    // respectively.
+    //
+    //      v- = v - 2^e        if f != 2^(p-1) or e == e_min                (A)
+    //         = v - 2^(e-1)    if f == 2^(p-1) and e > e_min                (B)
+    //
+    //      v+ = v + 2^e
+    //
+    // Let m- = (v- + v) / 2 and m+ = (v + v+) / 2. All real numbers _strictly_
+    // between m- and m+ round to v, regardless of how the input rounding
+    // algorithm breaks ties.
+    //
+    //      ---+-------------+-------------+-------------+-------------+---  (A)
+    //         v-            m-            v             m+            v+
+    //
+    //      -----------------+------+------+-------------+-------------+---  (B)
+    //                       v-     m-     v             m+            v+
+
+    const bool lower_boundary_is_closer = F == 0 && E > 1;
+    const diyfp m_plus = diyfp(2 * v.f + 1, v.e - 1);
+    const diyfp m_minus = lower_boundary_is_closer
+                          ? diyfp(4 * v.f - 1, v.e - 2)  // (B)
+                          : diyfp(2 * v.f - 1, v.e - 1); // (A)
+
+    // Determine the normalized w+ = m+.
+    const diyfp w_plus = diyfp::normalize(m_plus);
+
+    // Determine w- = m- such that e_(w-) = e_(w+).
+    const diyfp w_minus = diyfp::normalize_to(m_minus, w_plus.e);
+
+    return {diyfp::normalize(v), w_minus, w_plus};
+}
+
+// Given normalized diyfp w, Grisu needs to find a (normalized) cached
+// power-of-ten c, such that the exponent of the product c * w = f * 2^e lies
+// within a certain range [alpha, gamma] (Definition 3.2 from [1])
+//
+//      alpha <= e = e_c + e_w + q <= gamma
+//
+// or
+//
+//      f_c * f_w * 2^alpha <= f_c 2^(e_c) * f_w 2^(e_w) * 2^q
+//                          <= f_c * f_w * 2^gamma
+//
+// Since c and w are normalized, i.e. 2^(q-1) <= f < 2^q, this implies
+//
+//      2^(q-1) * 2^(q-1) * 2^alpha <= c * w * 2^q < 2^q * 2^q * 2^gamma
+//
+// or
+//
+//      2^(q - 2 + alpha) <= c * w < 2^(q + gamma)
+//
+// The choice of (alpha,gamma) determines the size of the table and the form of
+// the digit generation procedure. Using (alpha,gamma)=(-60,-32) works out well
+// in practice:
+//
+// The idea is to cut the number c * w = f * 2^e into two parts, which can be
+// processed independently: An integral part p1, and a fractional part p2:
+//
+//      f * 2^e = ( (f div 2^-e) * 2^-e + (f mod 2^-e) ) * 2^e
+//              = (f div 2^-e) + (f mod 2^-e) * 2^e
+//              = p1 + p2 * 2^e
+//
+// The conversion of p1 into decimal form requires a series of divisions and
+// modulos by (a power of) 10. These operations are faster for 32-bit than for
+// 64-bit integers, so p1 should ideally fit into a 32-bit integer. This can be
+// achieved by choosing
+//
+//      -e >= 32   or   e <= -32 := gamma
+//
+// In order to convert the fractional part
+//
+//      p2 * 2^e = p2 / 2^-e = d[-1] / 10^1 + d[-2] / 10^2 + ...
+//
+// into decimal form, the fraction is repeatedly multiplied by 10 and the digits
+// d[-i] are extracted in order:
+//
+//      (10 * p2) div 2^-e = d[-1]
+//      (10 * p2) mod 2^-e = d[-2] / 10^1 + ...
+//
+// The multiplication by 10 must not overflow. It is sufficient to choose
+//
+//      10 * p2 < 16 * p2 = 2^4 * p2 <= 2^64.
+//
+// Since p2 = f mod 2^-e < 2^-e,
+//
+//      -e <= 60   or   e >= -60 := alpha
+
+constexpr int kAlpha = -60;
+constexpr int kGamma = -32;
+
+struct cached_power // c = f * 2^e ~= 10^k
+{
+    std::uint64_t f;
+    int e;
+    int k;
+};
+
+/*!
+For a normalized diyfp w = f * 2^e, this function returns a (normalized) cached
+power-of-ten c = f_c * 2^e_c, such that the exponent of the product w * c
+satisfies (Definition 3.2 from [1])
+
+     alpha <= e_c + e + q <= gamma.
+*/
+inline cached_power get_cached_power_for_binary_exponent(int e)
+{
+    // Now
+    //
+    //      alpha <= e_c + e + q <= gamma                                    (1)
+    //      ==> f_c * 2^alpha <= c * 2^e * 2^q
+    //
+    // and since the c's are normalized, 2^(q-1) <= f_c,
+    //
+    //      ==> 2^(q - 1 + alpha) <= c * 2^(e + q)
+    //      ==> 2^(alpha - e - 1) <= c
+    //
+    // If c were an exact power of ten, i.e. c = 10^k, one may determine k as
+    //
+    //      k = ceil( log_10( 2^(alpha - e - 1) ) )
+    //        = ceil( (alpha - e - 1) * log_10(2) )
+    //
+    // From the paper:
+    // "In theory the result of the procedure could be wrong since c is rounded,
+    //  and the computation itself is approximated [...]. In practice, however,
+    //  this simple function is sufficient."
+    //
+    // For IEEE double precision floating-point numbers converted into
+    // normalized diyfp's w = f * 2^e, with q = 64,
+    //
+    //      e >= -1022      (min IEEE exponent)
+    //           -52        (p - 1)
+    //           -52        (p - 1, possibly normalize denormal IEEE numbers)
+    //           -11        (normalize the diyfp)
+    //         = -1137
+    //
+    // and
+    //
+    //      e <= +1023      (max IEEE exponent)
+    //           -52        (p - 1)
+    //           -11        (normalize the diyfp)
+    //         = 960
+    //
+    // This binary exponent range [-1137,960] results in a decimal exponent
+    // range [-307,324]. One does not need to store a cached power for each
+    // k in this range. For each such k it suffices to find a cached power
+    // such that the exponent of the product lies in [alpha,gamma].
+    // This implies that the difference of the decimal exponents of adjacent
+    // table entries must be less than or equal to
+    //
+    //      floor( (gamma - alpha) * log_10(2) ) = 8.
+    //
+    // (A smaller distance gamma-alpha would require a larger table.)
+
+    // NB:
+    // Actually this function returns c, such that -60 <= e_c + e + 64 <= -34.
+
+    constexpr int kCachedPowersMinDecExp = -300;
+    constexpr int kCachedPowersDecStep = 8;
+
+    static constexpr std::array<cached_power, 79> kCachedPowers =
+    {
+        {
+            { 0xAB70FE17C79AC6CA, -1060, -300 },
+            { 0xFF77B1FCBEBCDC4F, -1034, -292 },
+            { 0xBE5691EF416BD60C, -1007, -284 },
+            { 0x8DD01FAD907FFC3C,  -980, -276 },
+            { 0xD3515C2831559A83,  -954, -268 },
+            { 0x9D71AC8FADA6C9B5,  -927, -260 },
+            { 0xEA9C227723EE8BCB,  -901, -252 },
+            { 0xAECC49914078536D,  -874, -244 },
+            { 0x823C12795DB6CE57,  -847, -236 },
+            { 0xC21094364DFB5637,  -821, -228 },
+            { 0x9096EA6F3848984F,  -794, -220 },
+            { 0xD77485CB25823AC7,  -768, -212 },
+            { 0xA086CFCD97BF97F4,  -741, -204 },
+            { 0xEF340A98172AACE5,  -715, -196 },
+            { 0xB23867FB2A35B28E,  -688, -188 },
+            { 0x84C8D4DFD2C63F3B,  -661, -180 },
+            { 0xC5DD44271AD3CDBA,  -635, -172 },
+            { 0x936B9FCEBB25C996,  -608, -164 },
+            { 0xDBAC6C247D62A584,  -582, -156 },
+            { 0xA3AB66580D5FDAF6,  -555, -148 },
+            { 0xF3E2F893DEC3F126,  -529, -140 },
+            { 0xB5B5ADA8AAFF80B8,  -502, -132 },
+            { 0x87625F056C7C4A8B,  -475, -124 },
+            { 0xC9BCFF6034C13053,  -449, -116 },
+            { 0x964E858C91BA2655,  -422, -108 },
+            { 0xDFF9772470297EBD,  -396, -100 },
+            { 0xA6DFBD9FB8E5B88F,  -369,  -92 },
+            { 0xF8A95FCF88747D94,  -343,  -84 },
+            { 0xB94470938FA89BCF,  -316,  -76 },
+            { 0x8A08F0F8BF0F156B,  -289,  -68 },
+            { 0xCDB02555653131B6,  -263,  -60 },
+            { 0x993FE2C6D07B7FAC,  -236,  -52 },
+            { 0xE45C10C42A2B3B06,  -210,  -44 },
+            { 0xAA242499697392D3,  -183,  -36 },
+            { 0xFD87B5F28300CA0E,  -157,  -28 },
+            { 0xBCE5086492111AEB,  -130,  -20 },
+            { 0x8CBCCC096F5088CC,  -103,  -12 },
+            { 0xD1B71758E219652C,   -77,   -4 },
+            { 0x9C40000000000000,   -50,    4 },
+            { 0xE8D4A51000000000,   -24,   12 },
+            { 0xAD78EBC5AC620000,     3,   20 },
+            { 0x813F3978F8940984,    30,   28 },
+            { 0xC097CE7BC90715B3,    56,   36 },
+            { 0x8F7E32CE7BEA5C70,    83,   44 },
+            { 0xD5D238A4ABE98068,   109,   52 },
+            { 0x9F4F2726179A2245,   136,   60 },
+            { 0xED63A231D4C4FB27,   162,   68 },
+            { 0xB0DE65388CC8ADA8,   189,   76 },
+            { 0x83C7088E1AAB65DB,   216,   84 },
+            { 0xC45D1DF942711D9A,   242,   92 },
+            { 0x924D692CA61BE758,   269,  100 },
+            { 0xDA01EE641A708DEA,   295,  108 },
+            { 0xA26DA3999AEF774A,   322,  116 },
+            { 0xF209787BB47D6B85,   348,  124 },
+            { 0xB454E4A179DD1877,   375,  132 },
+            { 0x865B86925B9BC5C2,   402,  140 },
+            { 0xC83553C5C8965D3D,   428,  148 },
+            { 0x952AB45CFA97A0B3,   455,  156 },
+            { 0xDE469FBD99A05FE3,   481,  164 },
+            { 0xA59BC234DB398C25,   508,  172 },
+            { 0xF6C69A72A3989F5C,   534,  180 },
+            { 0xB7DCBF5354E9BECE,   561,  188 },
+            { 0x88FCF317F22241E2,   588,  196 },
+            { 0xCC20CE9BD35C78A5,   614,  204 },
+            { 0x98165AF37B2153DF,   641,  212 },
+            { 0xE2A0B5DC971F303A,   667,  220 },
+            { 0xA8D9D1535CE3B396,   694,  228 },
+            { 0xFB9B7CD9A4A7443C,   720,  236 },
+            { 0xBB764C4CA7A44410,   747,  244 },
+            { 0x8BAB8EEFB6409C1A,   774,  252 },
+            { 0xD01FEF10A657842C,   800,  260 },
+            { 0x9B10A4E5E9913129,   827,  268 },
+            { 0xE7109BFBA19C0C9D,   853,  276 },
+            { 0xAC2820D9623BF429,   880,  284 },
+            { 0x80444B5E7AA7CF85,   907,  292 },
+            { 0xBF21E44003ACDD2D,   933,  300 },
+            { 0x8E679C2F5E44FF8F,   960,  308 },
+            { 0xD433179D9C8CB841,   986,  316 },
+            { 0x9E19DB92B4E31BA9,  1013,  324 },
+        }
+    };
+
+    // This computation gives exactly the same results for k as
+    //      k = ceil((kAlpha - e - 1) * 0.30102999566398114)
+    // for |e| <= 1500, but doesn't require floating-point operations.
+    // NB: log_10(2) ~= 78913 / 2^18
+    JSON_ASSERT(e >= -1500);
+    JSON_ASSERT(e <=  1500);
+    const int f = kAlpha - e - 1;
+    const int k = (f * 78913) / (1 << 18) + static_cast<int>(f > 0);
+
+    const int index = (-kCachedPowersMinDecExp + k + (kCachedPowersDecStep - 1)) / kCachedPowersDecStep;
+    JSON_ASSERT(index >= 0);
+    JSON_ASSERT(static_cast<std::size_t>(index) < kCachedPowers.size());
+
+    const cached_power cached = kCachedPowers[static_cast<std::size_t>(index)];
+    JSON_ASSERT(kAlpha <= cached.e + e + 64);
+    JSON_ASSERT(kGamma >= cached.e + e + 64);
+
+    return cached;
+}
+
+/*!
+For n != 0, returns k, such that pow10 := 10^(k-1) <= n < 10^k.
+For n == 0, returns 1 and sets pow10 := 1.
+*/
+inline int find_largest_pow10(const std::uint32_t n, std::uint32_t& pow10)
+{
+    // LCOV_EXCL_START
+    if (n >= 1000000000)
+    {
+        pow10 = 1000000000;
+        return 10;
+    }
+    // LCOV_EXCL_STOP
+    if (n >= 100000000)
+    {
+        pow10 = 100000000;
+        return  9;
+    }
+    if (n >= 10000000)
+    {
+        pow10 = 10000000;
+        return  8;
+    }
+    if (n >= 1000000)
+    {
+        pow10 = 1000000;
+        return  7;
+    }
+    if (n >= 100000)
+    {
+        pow10 = 100000;
+        return  6;
+    }
+    if (n >= 10000)
+    {
+        pow10 = 10000;
+        return  5;
+    }
+    if (n >= 1000)
+    {
+        pow10 = 1000;
+        return  4;
+    }
+    if (n >= 100)
+    {
+        pow10 = 100;
+        return  3;
+    }
+    if (n >= 10)
+    {
+        pow10 = 10;
+        return  2;
+    }
+
+    pow10 = 1;
+    return 1;
+}
+
+inline void grisu2_round(char* buf, int len, std::uint64_t dist, std::uint64_t delta,
+                         std::uint64_t rest, std::uint64_t ten_k)
+{
+    JSON_ASSERT(len >= 1);
+    JSON_ASSERT(dist <= delta);
+    JSON_ASSERT(rest <= delta);
+    JSON_ASSERT(ten_k > 0);
+
+    //               <--------------------------- delta ---->
+    //                                  <---- dist --------->
+    // --------------[------------------+-------------------]--------------
+    //               M-                 w                   M+
+    //
+    //                                  ten_k
+    //                                <------>
+    //                                       <---- rest ---->
+    // --------------[------------------+----+--------------]--------------
+    //                                  w    V
+    //                                       = buf * 10^k
+    //
+    // ten_k represents a unit-in-the-last-place in the decimal representation
+    // stored in buf.
+    // Decrement buf by ten_k while this takes buf closer to w.
+
+    // The tests are written in this order to avoid overflow in unsigned
+    // integer arithmetic.
+
+    while (rest < dist
+            && delta - rest >= ten_k
+            && (rest + ten_k < dist || dist - rest > rest + ten_k - dist))
+    {
+        JSON_ASSERT(buf[len - 1] != '0');
+        buf[len - 1]--;
+        rest += ten_k;
+    }
+}
+
+/*!
+Generates V = buffer * 10^decimal_exponent, such that M- <= V <= M+.
+M- and M+ must be normalized and share the same exponent -60 <= e <= -32.
+*/
+inline void grisu2_digit_gen(char* buffer, int& length, int& decimal_exponent,
+                             diyfp M_minus, diyfp w, diyfp M_plus)
+{
+    static_assert(kAlpha >= -60, "internal error");
+    static_assert(kGamma <= -32, "internal error");
+
+    // Generates the digits (and the exponent) of a decimal floating-point
+    // number V = buffer * 10^decimal_exponent in the range [M-, M+]. The diyfp's
+    // w, M- and M+ share the same exponent e, which satisfies alpha <= e <= gamma.
+    //
+    //               <--------------------------- delta ---->
+    //                                  <---- dist --------->
+    // --------------[------------------+-------------------]--------------
+    //               M-                 w                   M+
+    //
+    // Grisu2 generates the digits of M+ from left to right and stops as soon as
+    // V is in [M-,M+].
+
+    JSON_ASSERT(M_plus.e >= kAlpha);
+    JSON_ASSERT(M_plus.e <= kGamma);
+
+    std::uint64_t delta = diyfp::sub(M_plus, M_minus).f; // (significand of (M+ - M-), implicit exponent is e)
+    std::uint64_t dist  = diyfp::sub(M_plus, w      ).f; // (significand of (M+ - w ), implicit exponent is e)
+
+    // Split M+ = f * 2^e into two parts p1 and p2 (note: e < 0):
+    //
+    //      M+ = f * 2^e
+    //         = ((f div 2^-e) * 2^-e + (f mod 2^-e)) * 2^e
+    //         = ((p1        ) * 2^-e + (p2        )) * 2^e
+    //         = p1 + p2 * 2^e
+
+    const diyfp one(std::uint64_t{1} << -M_plus.e, M_plus.e);
+
+    auto p1 = static_cast<std::uint32_t>(M_plus.f >> -one.e); // p1 = f div 2^-e (Since -e >= 32, p1 fits into a 32-bit int.)
+    std::uint64_t p2 = M_plus.f & (one.f - 1);                    // p2 = f mod 2^-e
+
+    // 1)
+    //
+    // Generate the digits of the integral part p1 = d[n-1]...d[1]d[0]
+
+    JSON_ASSERT(p1 > 0);
+
+    std::uint32_t pow10{};
+    const int k = find_largest_pow10(p1, pow10);
+
+    //      10^(k-1) <= p1 < 10^k, pow10 = 10^(k-1)
+    //
+    //      p1 = (p1 div 10^(k-1)) * 10^(k-1) + (p1 mod 10^(k-1))
+    //         = (d[k-1]         ) * 10^(k-1) + (p1 mod 10^(k-1))
+    //
+    //      M+ = p1                                             + p2 * 2^e
+    //         = d[k-1] * 10^(k-1) + (p1 mod 10^(k-1))          + p2 * 2^e
+    //         = d[k-1] * 10^(k-1) + ((p1 mod 10^(k-1)) * 2^-e + p2) * 2^e
+    //         = d[k-1] * 10^(k-1) + (                         rest) * 2^e
+    //
+    // Now generate the digits d[n] of p1 from left to right (n = k-1,...,0)
+    //
+    //      p1 = d[k-1]...d[n] * 10^n + d[n-1]...d[0]
+    //
+    // but stop as soon as
+    //
+    //      rest * 2^e = (d[n-1]...d[0] * 2^-e + p2) * 2^e <= delta * 2^e
+
+    int n = k;
+    while (n > 0)
+    {
+        // Invariants:
+        //      M+ = buffer * 10^n + (p1 + p2 * 2^e)    (buffer = 0 for n = k)
+        //      pow10 = 10^(n-1) <= p1 < 10^n
+        //
+        const std::uint32_t d = p1 / pow10;  // d = p1 div 10^(n-1)
+        const std::uint32_t r = p1 % pow10;  // r = p1 mod 10^(n-1)
+        //
+        //      M+ = buffer * 10^n + (d * 10^(n-1) + r) + p2 * 2^e
+        //         = (buffer * 10 + d) * 10^(n-1) + (r + p2 * 2^e)
+        //
+        JSON_ASSERT(d <= 9);
+        buffer[length++] = static_cast<char>('0' + d); // buffer := buffer * 10 + d
+        //
+        //      M+ = buffer * 10^(n-1) + (r + p2 * 2^e)
+        //
+        p1 = r;
+        n--;
+        //
+        //      M+ = buffer * 10^n + (p1 + p2 * 2^e)
+        //      pow10 = 10^n
+        //
+
+        // Now check if enough digits have been generated.
+        // Compute
+        //
+        //      p1 + p2 * 2^e = (p1 * 2^-e + p2) * 2^e = rest * 2^e
+        //
+        // Note:
+        // Since rest and delta share the same exponent e, it suffices to
+        // compare the significands.
+        const std::uint64_t rest = (std::uint64_t{p1} << -one.e) + p2;
+        if (rest <= delta)
+        {
+            // V = buffer * 10^n, with M- <= V <= M+.
+
+            decimal_exponent += n;
+
+            // We may now just stop. But instead look if the buffer could be
+            // decremented to bring V closer to w.
+            //
+            // pow10 = 10^n is now 1 ulp in the decimal representation V.
+            // The rounding procedure works with diyfp's with an implicit
+            // exponent of e.
+            //
+            //      10^n = (10^n * 2^-e) * 2^e = ulp * 2^e
+            //
+            const std::uint64_t ten_n = std::uint64_t{pow10} << -one.e;
+            grisu2_round(buffer, length, dist, delta, rest, ten_n);
+
+            return;
+        }
+
+        pow10 /= 10;
+        //
+        //      pow10 = 10^(n-1) <= p1 < 10^n
+        // Invariants restored.
+    }
+
+    // 2)
+    //
+    // The digits of the integral part have been generated:
+    //
+    //      M+ = d[k-1]...d[1]d[0] + p2 * 2^e
+    //         = buffer            + p2 * 2^e
+    //
+    // Now generate the digits of the fractional part p2 * 2^e.
+    //
+    // Note:
+    // No decimal point is generated: the exponent is adjusted instead.
+    //
+    // p2 actually represents the fraction
+    //
+    //      p2 * 2^e
+    //          = p2 / 2^-e
+    //          = d[-1] / 10^1 + d[-2] / 10^2 + ...
+    //
+    // Now generate the digits d[-m] of p1 from left to right (m = 1,2,...)
+    //
+    //      p2 * 2^e = d[-1]d[-2]...d[-m] * 10^-m
+    //                      + 10^-m * (d[-m-1] / 10^1 + d[-m-2] / 10^2 + ...)
+    //
+    // using
+    //
+    //      10^m * p2 = ((10^m * p2) div 2^-e) * 2^-e + ((10^m * p2) mod 2^-e)
+    //                = (                   d) * 2^-e + (                   r)
+    //
+    // or
+    //      10^m * p2 * 2^e = d + r * 2^e
+    //
+    // i.e.
+    //
+    //      M+ = buffer + p2 * 2^e
+    //         = buffer + 10^-m * (d + r * 2^e)
+    //         = (buffer * 10^m + d) * 10^-m + 10^-m * r * 2^e
+    //
+    // and stop as soon as 10^-m * r * 2^e <= delta * 2^e
+
+    JSON_ASSERT(p2 > delta);
+
+    int m = 0;
+    for (;;)
+    {
+        // Invariant:
+        //      M+ = buffer * 10^-m + 10^-m * (d[-m-1] / 10 + d[-m-2] / 10^2 + ...) * 2^e
+        //         = buffer * 10^-m + 10^-m * (p2                                 ) * 2^e
+        //         = buffer * 10^-m + 10^-m * (1/10 * (10 * p2)                   ) * 2^e
+        //         = buffer * 10^-m + 10^-m * (1/10 * ((10*p2 div 2^-e) * 2^-e + (10*p2 mod 2^-e)) * 2^e
+        //
+        JSON_ASSERT(p2 <= (std::numeric_limits<std::uint64_t>::max)() / 10);
+        p2 *= 10;
+        const std::uint64_t d = p2 >> -one.e;     // d = (10 * p2) div 2^-e
+        const std::uint64_t r = p2 & (one.f - 1); // r = (10 * p2) mod 2^-e
+        //
+        //      M+ = buffer * 10^-m + 10^-m * (1/10 * (d * 2^-e + r) * 2^e
+        //         = buffer * 10^-m + 10^-m * (1/10 * (d + r * 2^e))
+        //         = (buffer * 10 + d) * 10^(-m-1) + 10^(-m-1) * r * 2^e
+        //
+        JSON_ASSERT(d <= 9);
+        buffer[length++] = static_cast<char>('0' + d); // buffer := buffer * 10 + d
+        //
+        //      M+ = buffer * 10^(-m-1) + 10^(-m-1) * r * 2^e
+        //
+        p2 = r;
+        m++;
+        //
+        //      M+ = buffer * 10^-m + 10^-m * p2 * 2^e
+        // Invariant restored.
+
+        // Check if enough digits have been generated.
+        //
+        //      10^-m * p2 * 2^e <= delta * 2^e
+        //              p2 * 2^e <= 10^m * delta * 2^e
+        //                    p2 <= 10^m * delta
+        delta *= 10;
+        dist  *= 10;
+        if (p2 <= delta)
+        {
+            break;
+        }
+    }
+
+    // V = buffer * 10^-m, with M- <= V <= M+.
+
+    decimal_exponent -= m;
+
+    // 1 ulp in the decimal representation is now 10^-m.
+    // Since delta and dist are now scaled by 10^m, we need to do the
+    // same with ulp in order to keep the units in sync.
+    //
+    //      10^m * 10^-m = 1 = 2^-e * 2^e = ten_m * 2^e
+    //
+    const std::uint64_t ten_m = one.f;
+    grisu2_round(buffer, length, dist, delta, p2, ten_m);
+
+    // By construction this algorithm generates the shortest possible decimal
+    // number (Loitsch, Theorem 6.2) which rounds back to w.
+    // For an input number of precision p, at least
+    //
+    //      N = 1 + ceil(p * log_10(2))
+    //
+    // decimal digits are sufficient to identify all binary floating-point
+    // numbers (Matula, "In-and-Out conversions").
+    // This implies that the algorithm does not produce more than N decimal
+    // digits.
+    //
+    //      N = 17 for p = 53 (IEEE double precision)
+    //      N = 9  for p = 24 (IEEE single precision)
+}
+
+/*!
+v = buf * 10^decimal_exponent
+len is the length of the buffer (number of decimal digits)
+The buffer must be large enough, i.e. >= max_digits10.
+*/
+JSON_HEDLEY_NON_NULL(1)
+inline void grisu2(char* buf, int& len, int& decimal_exponent,
+                   diyfp m_minus, diyfp v, diyfp m_plus)
+{
+    JSON_ASSERT(m_plus.e == m_minus.e);
+    JSON_ASSERT(m_plus.e == v.e);
+
+    //  --------(-----------------------+-----------------------)--------    (A)
+    //          m-                      v                       m+
+    //
+    //  --------------------(-----------+-----------------------)--------    (B)
+    //                      m-          v                       m+
+    //
+    // First scale v (and m- and m+) such that the exponent is in the range
+    // [alpha, gamma].
+
+    const cached_power cached = get_cached_power_for_binary_exponent(m_plus.e);
+
+    const diyfp c_minus_k(cached.f, cached.e); // = c ~= 10^-k
+
+    // The exponent of the products is = v.e + c_minus_k.e + q and is in the range [alpha,gamma]
+    const diyfp w       = diyfp::mul(v,       c_minus_k);
+    const diyfp w_minus = diyfp::mul(m_minus, c_minus_k);
+    const diyfp w_plus  = diyfp::mul(m_plus,  c_minus_k);
+
+    //  ----(---+---)---------------(---+---)---------------(---+---)----
+    //          w-                      w                       w+
+    //          = c*m-                  = c*v                   = c*m+
+    //
+    // diyfp::mul rounds its result and c_minus_k is approximated too. w, w- and
+    // w+ are now off by a small amount.
+    // In fact:
+    //
+    //      w - v * 10^k < 1 ulp
+    //
+    // To account for this inaccuracy, add resp. subtract 1 ulp.
+    //
+    //  --------+---[---------------(---+---)---------------]---+--------
+    //          w-  M-                  w                   M+  w+
+    //
+    // Now any number in [M-, M+] (bounds included) will round to w when input,
+    // regardless of how the input rounding algorithm breaks ties.
+    //
+    // And digit_gen generates the shortest possible such number in [M-, M+].
+    // Note that this does not mean that Grisu2 always generates the shortest
+    // possible number in the interval (m-, m+).
+    const diyfp M_minus(w_minus.f + 1, w_minus.e);
+    const diyfp M_plus (w_plus.f  - 1, w_plus.e );
+
+    decimal_exponent = -cached.k; // = -(-k) = k
+
+    grisu2_digit_gen(buf, len, decimal_exponent, M_minus, w, M_plus);
+}
+
+/*!
+v = buf * 10^decimal_exponent
+len is the length of the buffer (number of decimal digits)
+The buffer must be large enough, i.e. >= max_digits10.
+*/
+template<typename FloatType>
+JSON_HEDLEY_NON_NULL(1)
+void grisu2(char* buf, int& len, int& decimal_exponent, FloatType value)
+{
+    static_assert(diyfp::kPrecision >= std::numeric_limits<FloatType>::digits + 3,
+                  "internal error: not enough precision");
+
+    JSON_ASSERT(std::isfinite(value));
+    JSON_ASSERT(value > 0);
+
+    // If the neighbors (and boundaries) of 'value' are always computed for double-precision
+    // numbers, all float's can be recovered using strtod (and strtof). However, the resulting
+    // decimal representations are not exactly "short".
+    //
+    // The documentation for 'std::to_chars' (https://en.cppreference.com/w/cpp/utility/to_chars)
+    // says "value is converted to a string as if by std::sprintf in the default ("C") locale"
+    // and since sprintf promotes floats to doubles, I think this is exactly what 'std::to_chars'
+    // does.
+    // On the other hand, the documentation for 'std::to_chars' requires that "parsing the
+    // representation using the corresponding std::from_chars function recovers value exactly". That
+    // indicates that single precision floating-point numbers should be recovered using
+    // 'std::strtof'.
+    //
+    // NB: If the neighbors are computed for single-precision numbers, there is a single float
+    //     (7.0385307e-26f) which can't be recovered using strtod. The resulting double precision
+    //     value is off by 1 ulp.
+#if 0
+    const boundaries w = compute_boundaries(static_cast<double>(value));
+#else
+    const boundaries w = compute_boundaries(value);
+#endif
+
+    grisu2(buf, len, decimal_exponent, w.minus, w.w, w.plus);
+}
+
+/*!
+@brief appends a decimal representation of e to buf
+@return a pointer to the element following the exponent.
+@pre -1000 < e < 1000
+*/
+JSON_HEDLEY_NON_NULL(1)
+JSON_HEDLEY_RETURNS_NON_NULL
+inline char* append_exponent(char* buf, int e)
+{
+    JSON_ASSERT(e > -1000);
+    JSON_ASSERT(e <  1000);
+
+    if (e < 0)
+    {
+        e = -e;
+        *buf++ = '-';
+    }
+    else
+    {
+        *buf++ = '+';
+    }
+
+    auto k = static_cast<std::uint32_t>(e);
+    if (k < 10)
+    {
+        // Always print at least two digits in the exponent.
+        // This is for compatibility with printf("%g").
+        *buf++ = '0';
+        *buf++ = static_cast<char>('0' + k);
+    }
+    else if (k < 100)
+    {
+        *buf++ = static_cast<char>('0' + k / 10);
+        k %= 10;
+        *buf++ = static_cast<char>('0' + k);
+    }
+    else
+    {
+        *buf++ = static_cast<char>('0' + k / 100);
+        k %= 100;
+        *buf++ = static_cast<char>('0' + k / 10);
+        k %= 10;
+        *buf++ = static_cast<char>('0' + k);
+    }
+
+    return buf;
+}
+
+/*!
+@brief prettify v = buf * 10^decimal_exponent
+
+If v is in the range [10^min_exp, 10^max_exp) it will be printed in fixed-point
+notation. Otherwise it will be printed in exponential notation.
+
+@pre min_exp < 0
+@pre max_exp > 0
+*/
+JSON_HEDLEY_NON_NULL(1)
+JSON_HEDLEY_RETURNS_NON_NULL
+inline char* format_buffer(char* buf, int len, int decimal_exponent,
+                           int min_exp, int max_exp)
+{
+    JSON_ASSERT(min_exp < 0);
+    JSON_ASSERT(max_exp > 0);
+
+    const int k = len;
+    const int n = len + decimal_exponent;
+
+    // v = buf * 10^(n-k)
+    // k is the length of the buffer (number of decimal digits)
+    // n is the position of the decimal point relative to the start of the buffer.
+
+    if (k <= n && n <= max_exp)
+    {
+        // digits[000]
+        // len <= max_exp + 2
+
+        std::memset(buf + k, '0', static_cast<size_t>(n) - static_cast<size_t>(k));
+        // Make it look like a floating-point number (#362, #378)
+        buf[n + 0] = '.';
+        buf[n + 1] = '0';
+        return buf + (static_cast<size_t>(n) + 2);
+    }
+
+    if (0 < n && n <= max_exp)
+    {
+        // dig.its
+        // len <= max_digits10 + 1
+
+        JSON_ASSERT(k > n);
+
+        std::memmove(buf + (static_cast<size_t>(n) + 1), buf + n, static_cast<size_t>(k) - static_cast<size_t>(n));
+        buf[n] = '.';
+        return buf + (static_cast<size_t>(k) + 1U);
+    }
+
+    if (min_exp < n && n <= 0)
+    {
+        // 0.[000]digits
+        // len <= 2 + (-min_exp - 1) + max_digits10
+
+        std::memmove(buf + (2 + static_cast<size_t>(-n)), buf, static_cast<size_t>(k));
+        buf[0] = '0';
+        buf[1] = '.';
+        std::memset(buf + 2, '0', static_cast<size_t>(-n));
+        return buf + (2U + static_cast<size_t>(-n) + static_cast<size_t>(k));
+    }
+
+    if (k == 1)
+    {
+        // dE+123
+        // len <= 1 + 5
+
+        buf += 1;
+    }
+    else
+    {
+        // d.igitsE+123
+        // len <= max_digits10 + 1 + 5
+
+        std::memmove(buf + 2, buf + 1, static_cast<size_t>(k) - 1);
+        buf[1] = '.';
+        buf += 1 + static_cast<size_t>(k);
+    }
+
+    *buf++ = 'e';
+    return append_exponent(buf, n - 1);
+}
+
+}  // namespace dtoa_impl
+
+/*!
+@brief generates a decimal representation of the floating-point number value in [first, last).
+
+The format of the resulting decimal representation is similar to printf's %g
+format. Returns an iterator pointing past-the-end of the decimal representation.
+
+@note The input number must be finite, i.e. NaN's and Inf's are not supported.
+@note The buffer must be large enough.
+@note The result is NOT null-terminated.
+*/
+template<typename FloatType>
+JSON_HEDLEY_NON_NULL(1, 2)
+JSON_HEDLEY_RETURNS_NON_NULL
+char* to_chars(char* first, const char* last, FloatType value)
+{
+    static_cast<void>(last); // maybe unused - fix warning
+    JSON_ASSERT(std::isfinite(value));
+
+    // Use signbit(value) instead of (value < 0) since signbit works for -0.
+    if (std::signbit(value))
+    {
+        value = -value;
+        *first++ = '-';
+    }
+
+#ifdef __GNUC__
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wfloat-equal"
+#endif
+    if (value == 0) // +-0
+    {
+        *first++ = '0';
+        // Make it look like a floating-point number (#362, #378)
+        *first++ = '.';
+        *first++ = '0';
+        return first;
+    }
+#ifdef __GNUC__
+#pragma GCC diagnostic pop
+#endif
+
+    JSON_ASSERT(last - first >= std::numeric_limits<FloatType>::max_digits10);
+
+    // Compute v = buffer * 10^decimal_exponent.
+    // The decimal digits are stored in the buffer, which needs to be interpreted
+    // as an unsigned decimal integer.
+    // len is the length of the buffer, i.e. the number of decimal digits.
+    int len = 0;
+    int decimal_exponent = 0;
+    dtoa_impl::grisu2(first, len, decimal_exponent, value);
+
+    JSON_ASSERT(len <= std::numeric_limits<FloatType>::max_digits10);
+
+    // Format the buffer like printf("%.*g", prec, value)
+    constexpr int kMinExp = -4;
+    // Use digits10 here to increase compatibility with version 2.
+    constexpr int kMaxExp = std::numeric_limits<FloatType>::digits10;
+
+    JSON_ASSERT(last - first >= kMaxExp + 2);
+    JSON_ASSERT(last - first >= 2 + (-kMinExp - 1) + std::numeric_limits<FloatType>::max_digits10);
+    JSON_ASSERT(last - first >= std::numeric_limits<FloatType>::max_digits10 + 6);
+
+    return dtoa_impl::format_buffer(first, len, decimal_exponent, kMinExp, kMaxExp);
+}
+
+}  // namespace detail
+NLOHMANN_JSON_NAMESPACE_END
+
+// #include <nlohmann/detail/exceptions.hpp>
+
+// #include <nlohmann/detail/macro_scope.hpp>
+
+// #include <nlohmann/detail/meta/cpp_future.hpp>
+
+// #include <nlohmann/detail/output/binary_writer.hpp>
+
+// #include <nlohmann/detail/output/output_adapters.hpp>
+
+// #include <nlohmann/detail/string_concat.hpp>
+
+// #include <nlohmann/detail/value_t.hpp>
+
+
+NLOHMANN_JSON_NAMESPACE_BEGIN
+namespace detail
+{
+
+///////////////////
+// serialization //
+///////////////////
+
+/// how to treat decoding errors
+enum class error_handler_t
+{
+    strict,  ///< throw a type_error exception in case of invalid UTF-8
+    replace, ///< replace invalid UTF-8 sequences with U+FFFD
+    ignore   ///< ignore invalid UTF-8 sequences
+};
+
+template<typename BasicJsonType>
+class serializer
+{
+    using string_t = typename BasicJsonType::string_t;
+    using number_float_t = typename BasicJsonType::number_float_t;
+    using number_integer_t = typename BasicJsonType::number_integer_t;
+    using number_unsigned_t = typename BasicJsonType::number_unsigned_t;
+    using binary_char_t = typename BasicJsonType::binary_t::value_type;
+    static constexpr std::uint8_t UTF8_ACCEPT = 0;
+    static constexpr std::uint8_t UTF8_REJECT = 1;
+
+  public:
+    /*!
+    @param[in] s  output stream to serialize to
+    @param[in] ichar  indentation character to use
+    @param[in] error_handler_  how to react on decoding errors
+    */
+    serializer(output_adapter_t<char> s, const char ichar,
+               error_handler_t error_handler_ = error_handler_t::strict)
+        : o(std::move(s))
+        , loc(std::localeconv())
+        , thousands_sep(loc->thousands_sep == nullptr ? '\0' : std::char_traits<char>::to_char_type(* (loc->thousands_sep)))
+        , decimal_point(loc->decimal_point == nullptr ? '\0' : std::char_traits<char>::to_char_type(* (loc->decimal_point)))
+        , indent_char(ichar)
+        , indent_string(512, indent_char)
+        , error_handler(error_handler_)
+    {}
+
+    // delete because of pointer members
+    serializer(const serializer&) = delete;
+    serializer& operator=(const serializer&) = delete;
+    serializer(serializer&&) = delete;
+    serializer& operator=(serializer&&) = delete;
+    ~serializer() = default;
+
+    /*!
+    @brief internal implementation of the serialization function
+
+    This function is called by the public member function dump and organizes
+    the serialization internally. The indentation level is propagated as
+    additional parameter. In case of arrays and objects, the function is
+    called recursively.
+
+    - strings and object keys are escaped using `escape_string()`
+    - integer numbers are converted implicitly via `operator<<`
+    - floating-point numbers are converted to a string using `"%g"` format
+    - binary values are serialized as objects containing the subtype and the
+      byte array
+
+    @param[in] val               value to serialize
+    @param[in] pretty_print      whether the output shall be pretty-printed
+    @param[in] ensure_ascii If @a ensure_ascii is true, all non-ASCII characters
+    in the output are escaped with `\uXXXX` sequences, and the result consists
+    of ASCII characters only.
+    @param[in] indent_step       the indent level
+    @param[in] current_indent    the current indent level (only used internally)
+    */
+    void dump(const BasicJsonType& val,
+              const bool pretty_print,
+              const bool ensure_ascii,
+              const unsigned int indent_step,
+              const unsigned int current_indent = 0)
+    {
+        switch (val.m_data.m_type)
+        {
+            case value_t::object:
+            {
+                if (val.m_data.m_value.object->empty())
+                {
+                    o->write_characters("{}", 2);
+                    return;
+                }
+
+                if (pretty_print)
+                {
+                    o->write_characters("{\n", 2);
+
+                    // variable to hold indentation for recursive calls
+                    const auto new_indent = current_indent + indent_step;
+                    if (JSON_HEDLEY_UNLIKELY(indent_string.size() < new_indent))
+                    {
+                        indent_string.resize(indent_string.size() * 2, ' ');
+                    }
+
+                    // first n-1 elements
+                    auto i = val.m_data.m_value.object->cbegin();
+                    for (std::size_t cnt = 0; cnt < val.m_data.m_value.object->size() - 1; ++cnt, ++i)
+                    {
+                        o->write_characters(indent_string.c_str(), new_indent);
+                        o->write_character('\"');
+                        dump_escaped(i->first, ensure_ascii);
+                        o->write_characters("\": ", 3);
+                        dump(i->second, true, ensure_ascii, indent_step, new_indent);
+                        o->write_characters(",\n", 2);
+                    }
+
+                    // last element
+                    JSON_ASSERT(i != val.m_data.m_value.object->cend());
+                    JSON_ASSERT(std::next(i) == val.m_data.m_value.object->cend());
+                    o->write_characters(indent_string.c_str(), new_indent);
+                    o->write_character('\"');
+                    dump_escaped(i->first, ensure_ascii);
+                    o->write_characters("\": ", 3);
+                    dump(i->second, true, ensure_ascii, indent_step, new_indent);
+
+                    o->write_character('\n');
+                    o->write_characters(indent_string.c_str(), current_indent);
+                    o->write_character('}');
+                }
+                else
+                {
+                    o->write_character('{');
+
+                    // first n-1 elements
+                    auto i = val.m_data.m_value.object->cbegin();
+                    for (std::size_t cnt = 0; cnt < val.m_data.m_value.object->size() - 1; ++cnt, ++i)
+                    {
+                        o->write_character('\"');
+                        dump_escaped(i->first, ensure_ascii);
+                        o->write_characters("\":", 2);
+                        dump(i->second, false, ensure_ascii, indent_step, current_indent);
+                        o->write_character(',');
+                    }
+
+                    // last element
+                    JSON_ASSERT(i != val.m_data.m_value.object->cend());
+                    JSON_ASSERT(std::next(i) == val.m_data.m_value.object->cend());
+                    o->write_character('\"');
+                    dump_escaped(i->first, ensure_ascii);
+                    o->write_characters("\":", 2);
+                    dump(i->second, false, ensure_ascii, indent_step, current_indent);
+
+                    o->write_character('}');
+                }
+
+                return;
+            }
+
+            case value_t::array:
+            {
+                if (val.m_data.m_value.array->empty())
+                {
+                    o->write_characters("[]", 2);
+                    return;
+                }
+
+                if (pretty_print)
+                {
+                    o->write_characters("[\n", 2);
+
+                    // variable to hold indentation for recursive calls
+                    const auto new_indent = current_indent + indent_step;
+                    if (JSON_HEDLEY_UNLIKELY(indent_string.size() < new_indent))
+                    {
+                        indent_string.resize(indent_string.size() * 2, ' ');
+                    }
+
+                    // first n-1 elements
+                    for (auto i = val.m_data.m_value.array->cbegin();
+                            i != val.m_data.m_value.array->cend() - 1; ++i)
+                    {
+                        o->write_characters(indent_string.c_str(), new_indent);
+                        dump(*i, true, ensure_ascii, indent_step, new_indent);
+                        o->write_characters(",\n", 2);
+                    }
+
+                    // last element
+                    JSON_ASSERT(!val.m_data.m_value.array->empty());
+                    o->write_characters(indent_string.c_str(), new_indent);
+                    dump(val.m_data.m_value.array->back(), true, ensure_ascii, indent_step, new_indent);
+
+                    o->write_character('\n');
+                    o->write_characters(indent_string.c_str(), current_indent);
+                    o->write_character(']');
+                }
+                else
+                {
+                    o->write_character('[');
+
+                    // first n-1 elements
+                    for (auto i = val.m_data.m_value.array->cbegin();
+                            i != val.m_data.m_value.array->cend() - 1; ++i)
+                    {
+                        dump(*i, false, ensure_ascii, indent_step, current_indent);
+                        o->write_character(',');
+                    }
+
+                    // last element
+                    JSON_ASSERT(!val.m_data.m_value.array->empty());
+                    dump(val.m_data.m_value.array->back(), false, ensure_ascii, indent_step, current_indent);
+
+                    o->write_character(']');
+                }
+
+                return;
+            }
+
+            case value_t::string:
+            {
+                o->write_character('\"');
+                dump_escaped(*val.m_data.m_value.string, ensure_ascii);
+                o->write_character('\"');
+                return;
+            }
+
+            case value_t::binary:
+            {
+                if (pretty_print)
+                {
+                    o->write_characters("{\n", 2);
+
+                    // variable to hold indentation for recursive calls
+                    const auto new_indent = current_indent + indent_step;
+                    if (JSON_HEDLEY_UNLIKELY(indent_string.size() < new_indent))
+                    {
+                        indent_string.resize(indent_string.size() * 2, ' ');
+                    }
+
+                    o->write_characters(indent_string.c_str(), new_indent);
+
+                    o->write_characters("\"bytes\": [", 10);
+
+                    if (!val.m_data.m_value.binary->empty())
+                    {
+                        for (auto i = val.m_data.m_value.binary->cbegin();
+                                i != val.m_data.m_value.binary->cend() - 1; ++i)
+                        {
+                            dump_integer(*i);
+                            o->write_characters(", ", 2);
+                        }
+                        dump_integer(val.m_data.m_value.binary->back());
+                    }
+
+                    o->write_characters("],\n", 3);
+                    o->write_characters(indent_string.c_str(), new_indent);
+
+                    o->write_characters("\"subtype\": ", 11);
+                    if (val.m_data.m_value.binary->has_subtype())
+                    {
+                        dump_integer(val.m_data.m_value.binary->subtype());
+                    }
+                    else
+                    {
+                        o->write_characters("null", 4);
+                    }
+                    o->write_character('\n');
+                    o->write_characters(indent_string.c_str(), current_indent);
+                    o->write_character('}');
+                }
+                else
+                {
+                    o->write_characters("{\"bytes\":[", 10);
+
+                    if (!val.m_data.m_value.binary->empty())
+                    {
+                        for (auto i = val.m_data.m_value.binary->cbegin();
+                                i != val.m_data.m_value.binary->cend() - 1; ++i)
+                        {
+                            dump_integer(*i);
+                            o->write_character(',');
+                        }
+                        dump_integer(val.m_data.m_value.binary->back());
+                    }
+
+                    o->write_characters("],\"subtype\":", 12);
+                    if (val.m_data.m_value.binary->has_subtype())
+                    {
+                        dump_integer(val.m_data.m_value.binary->subtype());
+                        o->write_character('}');
+                    }
+                    else
+                    {
+                        o->write_characters("null}", 5);
+                    }
+                }
+                return;
+            }
+
+            case value_t::boolean:
+            {
+                if (val.m_data.m_value.boolean)
+                {
+                    o->write_characters("true", 4);
+                }
+                else
+                {
+                    o->write_characters("false", 5);
+                }
+                return;
+            }
+
+            case value_t::number_integer:
+            {
+                dump_integer(val.m_data.m_value.number_integer);
+                return;
+            }
+
+            case value_t::number_unsigned:
+            {
+                dump_integer(val.m_data.m_value.number_unsigned);
+                return;
+            }
+
+            case value_t::number_float:
+            {
+                dump_float(val.m_data.m_value.number_float);
+                return;
+            }
+
+            case value_t::discarded:
+            {
+                o->write_characters("<discarded>", 11);
+                return;
+            }
+
+            case value_t::null:
+            {
+                o->write_characters("null", 4);
+                return;
+            }
+
+            default:            // LCOV_EXCL_LINE
+                JSON_ASSERT(false); // NOLINT(cert-dcl03-c,hicpp-static-assert,misc-static-assert) LCOV_EXCL_LINE
+        }
+    }
+
+  JSON_PRIVATE_UNLESS_TESTED:
+    /*!
+    @brief dump escaped string
+
+    Escape a string by replacing certain special characters by a sequence of an
+    escape character (backslash) and another character and other control
+    characters by a sequence of "\u" followed by a four-digit hex
+    representation. The escaped string is written to output stream @a o.
+
+    @param[in] s  the string to escape
+    @param[in] ensure_ascii  whether to escape non-ASCII characters with
+                             \uXXXX sequences
+
+    @complexity Linear in the length of string @a s.
+    */
+    void dump_escaped(const string_t& s, const bool ensure_ascii)
+    {
+        std::uint32_t codepoint{};
+        std::uint8_t state = UTF8_ACCEPT;
+        std::size_t bytes = 0;  // number of bytes written to string_buffer
+
+        // number of bytes written at the point of the last valid byte
+        std::size_t bytes_after_last_accept = 0;
+        std::size_t undumped_chars = 0;
+
+        for (std::size_t i = 0; i < s.size(); ++i)
+        {
+            const auto byte = static_cast<std::uint8_t>(s[i]);
+
+            switch (decode(state, codepoint, byte))
+            {
+                case UTF8_ACCEPT:  // decode found a new code point
+                {
+                    switch (codepoint)
+                    {
+                        case 0x08: // backspace
+                        {
+                            string_buffer[bytes++] = '\\';
+                            string_buffer[bytes++] = 'b';
+                            break;
+                        }
+
+                        case 0x09: // horizontal tab
+                        {
+                            string_buffer[bytes++] = '\\';
+                            string_buffer[bytes++] = 't';
+                            break;
+                        }
+
+                        case 0x0A: // newline
+                        {
+                            string_buffer[bytes++] = '\\';
+                            string_buffer[bytes++] = 'n';
+                            break;
+                        }
+
+                        case 0x0C: // formfeed
+                        {
+                            string_buffer[bytes++] = '\\';
+                            string_buffer[bytes++] = 'f';
+                            break;
+                        }
+
+                        case 0x0D: // carriage return
+                        {
+                            string_buffer[bytes++] = '\\';
+                            string_buffer[bytes++] = 'r';
+                            break;
+                        }
+
+                        case 0x22: // quotation mark
+                        {
+                            string_buffer[bytes++] = '\\';
+                            string_buffer[bytes++] = '\"';
+                            break;
+                        }
+
+                        case 0x5C: // reverse solidus
+                        {
+                            string_buffer[bytes++] = '\\';
+                            string_buffer[bytes++] = '\\';
+                            break;
+                        }
+
+                        default:
+                        {
+                            // escape control characters (0x00..0x1F) or, if
+                            // ensure_ascii parameter is used, non-ASCII characters
+                            if ((codepoint <= 0x1F) || (ensure_ascii && (codepoint >= 0x7F)))
+                            {
+                                if (codepoint <= 0xFFFF)
+                                {
+                                    // NOLINTNEXTLINE(cppcoreguidelines-pro-type-vararg,hicpp-vararg)
+                                    static_cast<void>((std::snprintf)(string_buffer.data() + bytes, 7, "\\u%04x",
+                                                                      static_cast<std::uint16_t>(codepoint)));
+                                    bytes += 6;
+                                }
+                                else
+                                {
+                                    // NOLINTNEXTLINE(cppcoreguidelines-pro-type-vararg,hicpp-vararg)
+                                    static_cast<void>((std::snprintf)(string_buffer.data() + bytes, 13, "\\u%04x\\u%04x",
+                                                                      static_cast<std::uint16_t>(0xD7C0u + (codepoint >> 10u)),
+                                                                      static_cast<std::uint16_t>(0xDC00u + (codepoint & 0x3FFu))));
+                                    bytes += 12;
+                                }
+                            }
+                            else
+                            {
+                                // copy byte to buffer (all previous bytes
+                                // been copied have in default case above)
+                                string_buffer[bytes++] = s[i];
+                            }
+                            break;
+                        }
+                    }
+
+                    // write buffer and reset index; there must be 13 bytes
+                    // left, as this is the maximal number of bytes to be
+                    // written ("\uxxxx\uxxxx\0") for one code point
+                    if (string_buffer.size() - bytes < 13)
+                    {
+                        o->write_characters(string_buffer.data(), bytes);
+                        bytes = 0;
+                    }
+
+                    // remember the byte position of this accept
+                    bytes_after_last_accept = bytes;
+                    undumped_chars = 0;
+                    break;
+                }
+
+                case UTF8_REJECT:  // decode found invalid UTF-8 byte
+                {
+                    switch (error_handler)
+                    {
+                        case error_handler_t::strict:
+                        {
+                            JSON_THROW(type_error::create(316, concat("invalid UTF-8 byte at index ", std::to_string(i), ": 0x", hex_bytes(byte | 0)), nullptr));
+                        }
+
+                        case error_handler_t::ignore:
+                        case error_handler_t::replace:
+                        {
+                            // in case we saw this character the first time, we
+                            // would like to read it again, because the byte
+                            // may be OK for itself, but just not OK for the
+                            // previous sequence
+                            if (undumped_chars > 0)
+                            {
+                                --i;
+                            }
+
+                            // reset length buffer to the last accepted index;
+                            // thus removing/ignoring the invalid characters
+                            bytes = bytes_after_last_accept;
+
+                            if (error_handler == error_handler_t::replace)
+                            {
+                                // add a replacement character
+                                if (ensure_ascii)
+                                {
+                                    string_buffer[bytes++] = '\\';
+                                    string_buffer[bytes++] = 'u';
+                                    string_buffer[bytes++] = 'f';
+                                    string_buffer[bytes++] = 'f';
+                                    string_buffer[bytes++] = 'f';
+                                    string_buffer[bytes++] = 'd';
+                                }
+                                else
+                                {
+                                    string_buffer[bytes++] = detail::binary_writer<BasicJsonType, char>::to_char_type('\xEF');
+                                    string_buffer[bytes++] = detail::binary_writer<BasicJsonType, char>::to_char_type('\xBF');
+                                    string_buffer[bytes++] = detail::binary_writer<BasicJsonType, char>::to_char_type('\xBD');
+                                }
+
+                                // write buffer and reset index; there must be 13 bytes
+                                // left, as this is the maximal number of bytes to be
+                                // written ("\uxxxx\uxxxx\0") for one code point
+                                if (string_buffer.size() - bytes < 13)
+                                {
+                                    o->write_characters(string_buffer.data(), bytes);
+                                    bytes = 0;
+                                }
+
+                                bytes_after_last_accept = bytes;
+                            }
+
+                            undumped_chars = 0;
+
+                            // continue processing the string
+                            state = UTF8_ACCEPT;
+                            break;
+                        }
+
+                        default:            // LCOV_EXCL_LINE
+                            JSON_ASSERT(false); // NOLINT(cert-dcl03-c,hicpp-static-assert,misc-static-assert) LCOV_EXCL_LINE
+                    }
+                    break;
+                }
+
+                default:  // decode found yet incomplete multi-byte code point
+                {
+                    if (!ensure_ascii)
+                    {
+                        // code point will not be escaped - copy byte to buffer
+                        string_buffer[bytes++] = s[i];
+                    }
+                    ++undumped_chars;
+                    break;
+                }
+            }
+        }
+
+        // we finished processing the string
+        if (JSON_HEDLEY_LIKELY(state == UTF8_ACCEPT))
+        {
+            // write buffer
+            if (bytes > 0)
+            {
+                o->write_characters(string_buffer.data(), bytes);
+            }
+        }
+        else
+        {
+            // we finish reading, but do not accept: string was incomplete
+            switch (error_handler)
+            {
+                case error_handler_t::strict:
+                {
+                    JSON_THROW(type_error::create(316, concat("incomplete UTF-8 string; last byte: 0x", hex_bytes(static_cast<std::uint8_t>(s.back() | 0))), nullptr));
+                }
+
+                case error_handler_t::ignore:
+                {
+                    // write all accepted bytes
+                    o->write_characters(string_buffer.data(), bytes_after_last_accept);
+                    break;
+                }
+
+                case error_handler_t::replace:
+                {
+                    // write all accepted bytes
+                    o->write_characters(string_buffer.data(), bytes_after_last_accept);
+                    // add a replacement character
+                    if (ensure_ascii)
+                    {
+                        o->write_characters("\\ufffd", 6);
+                    }
+                    else
+                    {
+                        o->write_characters("\xEF\xBF\xBD", 3);
+                    }
+                    break;
+                }
+
+                default:            // LCOV_EXCL_LINE
+                    JSON_ASSERT(false); // NOLINT(cert-dcl03-c,hicpp-static-assert,misc-static-assert) LCOV_EXCL_LINE
+            }
+        }
+    }
+
+  private:
+    /*!
+    @brief count digits
+
+    Count the number of decimal (base 10) digits for an input unsigned integer.
+
+    @param[in] x  unsigned integer number to count its digits
+    @return    number of decimal digits
+    */
+    inline unsigned int count_digits(number_unsigned_t x) noexcept
+    {
+        unsigned int n_digits = 1;
+        for (;;)
+        {
+            if (x < 10)
+            {
+                return n_digits;
+            }
+            if (x < 100)
+            {
+                return n_digits + 1;
+            }
+            if (x < 1000)
+            {
+                return n_digits + 2;
+            }
+            if (x < 10000)
+            {
+                return n_digits + 3;
+            }
+            x = x / 10000u;
+            n_digits += 4;
+        }
+    }
+
+    /*!
+     * @brief convert a byte to a uppercase hex representation
+     * @param[in] byte byte to represent
+     * @return representation ("00".."FF")
+     */
+    static std::string hex_bytes(std::uint8_t byte)
+    {
+        std::string result = "FF";
+        constexpr const char* nibble_to_hex = "0123456789ABCDEF";
+        result[0] = nibble_to_hex[byte / 16];
+        result[1] = nibble_to_hex[byte % 16];
+        return result;
+    }
+
+    // templates to avoid warnings about useless casts
+    template <typename NumberType, enable_if_t<std::is_signed<NumberType>::value, int> = 0>
+    bool is_negative_number(NumberType x)
+    {
+        return x < 0;
+    }
+
+    template < typename NumberType, enable_if_t <std::is_unsigned<NumberType>::value, int > = 0 >
+    bool is_negative_number(NumberType /*unused*/)
+    {
+        return false;
+    }
+
+    /*!
+    @brief dump an integer
+
+    Dump a given integer to output stream @a o. Works internally with
+    @a number_buffer.
+
+    @param[in] x  integer number (signed or unsigned) to dump
+    @tparam NumberType either @a number_integer_t or @a number_unsigned_t
+    */
+    template < typename NumberType, detail::enable_if_t <
+                   std::is_integral<NumberType>::value ||
+                   std::is_same<NumberType, number_unsigned_t>::value ||
+                   std::is_same<NumberType, number_integer_t>::value ||
+                   std::is_same<NumberType, binary_char_t>::value,
+                   int > = 0 >
+    void dump_integer(NumberType x)
+    {
+        static constexpr std::array<std::array<char, 2>, 100> digits_to_99
+        {
+            {
+                {{'0', '0'}}, {{'0', '1'}}, {{'0', '2'}}, {{'0', '3'}}, {{'0', '4'}}, {{'0', '5'}}, {{'0', '6'}}, {{'0', '7'}}, {{'0', '8'}}, {{'0', '9'}},
+                {{'1', '0'}}, {{'1', '1'}}, {{'1', '2'}}, {{'1', '3'}}, {{'1', '4'}}, {{'1', '5'}}, {{'1', '6'}}, {{'1', '7'}}, {{'1', '8'}}, {{'1', '9'}},
+                {{'2', '0'}}, {{'2', '1'}}, {{'2', '2'}}, {{'2', '3'}}, {{'2', '4'}}, {{'2', '5'}}, {{'2', '6'}}, {{'2', '7'}}, {{'2', '8'}}, {{'2', '9'}},
+                {{'3', '0'}}, {{'3', '1'}}, {{'3', '2'}}, {{'3', '3'}}, {{'3', '4'}}, {{'3', '5'}}, {{'3', '6'}}, {{'3', '7'}}, {{'3', '8'}}, {{'3', '9'}},
+                {{'4', '0'}}, {{'4', '1'}}, {{'4', '2'}}, {{'4', '3'}}, {{'4', '4'}}, {{'4', '5'}}, {{'4', '6'}}, {{'4', '7'}}, {{'4', '8'}}, {{'4', '9'}},
+                {{'5', '0'}}, {{'5', '1'}}, {{'5', '2'}}, {{'5', '3'}}, {{'5', '4'}}, {{'5', '5'}}, {{'5', '6'}}, {{'5', '7'}}, {{'5', '8'}}, {{'5', '9'}},
+                {{'6', '0'}}, {{'6', '1'}}, {{'6', '2'}}, {{'6', '3'}}, {{'6', '4'}}, {{'6', '5'}}, {{'6', '6'}}, {{'6', '7'}}, {{'6', '8'}}, {{'6', '9'}},
+                {{'7', '0'}}, {{'7', '1'}}, {{'7', '2'}}, {{'7', '3'}}, {{'7', '4'}}, {{'7', '5'}}, {{'7', '6'}}, {{'7', '7'}}, {{'7', '8'}}, {{'7', '9'}},
+                {{'8', '0'}}, {{'8', '1'}}, {{'8', '2'}}, {{'8', '3'}}, {{'8', '4'}}, {{'8', '5'}}, {{'8', '6'}}, {{'8', '7'}}, {{'8', '8'}}, {{'8', '9'}},
+                {{'9', '0'}}, {{'9', '1'}}, {{'9', '2'}}, {{'9', '3'}}, {{'9', '4'}}, {{'9', '5'}}, {{'9', '6'}}, {{'9', '7'}}, {{'9', '8'}}, {{'9', '9'}},
+            }
+        };
+
+        // special case for "0"
+        if (x == 0)
+        {
+            o->write_character('0');
+            return;
+        }
+
+        // use a pointer to fill the buffer
+        auto buffer_ptr = number_buffer.begin(); // NOLINT(llvm-qualified-auto,readability-qualified-auto,cppcoreguidelines-pro-type-vararg,hicpp-vararg)
+
+        number_unsigned_t abs_value;
+
+        unsigned int n_chars{};
+
+        if (is_negative_number(x))
+        {
+            *buffer_ptr = '-';
+            abs_value = remove_sign(static_cast<number_integer_t>(x));
+
+            // account one more byte for the minus sign
+            n_chars = 1 + count_digits(abs_value);
+        }
+        else
+        {
+            abs_value = static_cast<number_unsigned_t>(x);
+            n_chars = count_digits(abs_value);
+        }
+
+        // spare 1 byte for '\0'
+        JSON_ASSERT(n_chars < number_buffer.size() - 1);
+
+        // jump to the end to generate the string from backward,
+        // so we later avoid reversing the result
+        buffer_ptr += n_chars;
+
+        // Fast int2ascii implementation inspired by "Fastware" talk by Andrei Alexandrescu
+        // See: https://www.youtube.com/watch?v=o4-CwDo2zpg
+        while (abs_value >= 100)
+        {
+            const auto digits_index = static_cast<unsigned>((abs_value % 100));
+            abs_value /= 100;
+            *(--buffer_ptr) = digits_to_99[digits_index][1];
+            *(--buffer_ptr) = digits_to_99[digits_index][0];
+        }
+
+        if (abs_value >= 10)
+        {
+            const auto digits_index = static_cast<unsigned>(abs_value);
+            *(--buffer_ptr) = digits_to_99[digits_index][1];
+            *(--buffer_ptr) = digits_to_99[digits_index][0];
+        }
+        else
+        {
+            *(--buffer_ptr) = static_cast<char>('0' + abs_value);
+        }
+
+        o->write_characters(number_buffer.data(), n_chars);
+    }
+
+    /*!
+    @brief dump a floating-point number
+
+    Dump a given floating-point number to output stream @a o. Works internally
+    with @a number_buffer.
+
+    @param[in] x  floating-point number to dump
+    */
+    void dump_float(number_float_t x)
+    {
+        // NaN / inf
+        if (!std::isfinite(x))
+        {
+            o->write_characters("null", 4);
+            return;
+        }
+
+        // If number_float_t is an IEEE-754 single or double precision number,
+        // use the Grisu2 algorithm to produce short numbers which are
+        // guaranteed to round-trip, using strtof and strtod, resp.
+        //
+        // NB: The test below works if <long double> == <double>.
+        static constexpr bool is_ieee_single_or_double
+            = (std::numeric_limits<number_float_t>::is_iec559 && std::numeric_limits<number_float_t>::digits == 24 && std::numeric_limits<number_float_t>::max_exponent == 128) ||
+              (std::numeric_limits<number_float_t>::is_iec559 && std::numeric_limits<number_float_t>::digits == 53 && std::numeric_limits<number_float_t>::max_exponent == 1024);
+
+        dump_float(x, std::integral_constant<bool, is_ieee_single_or_double>());
+    }
+
+    void dump_float(number_float_t x, std::true_type /*is_ieee_single_or_double*/)
+    {
+        auto* begin = number_buffer.data();
+        auto* end = ::nlohmann::detail::to_chars(begin, begin + number_buffer.size(), x);
+
+        o->write_characters(begin, static_cast<size_t>(end - begin));
+    }
+
+    void dump_float(number_float_t x, std::false_type /*is_ieee_single_or_double*/)
+    {
+        // get number of digits for a float -> text -> float round-trip
+        static constexpr auto d = std::numeric_limits<number_float_t>::max_digits10;
+
+        // the actual conversion
+        // NOLINTNEXTLINE(cppcoreguidelines-pro-type-vararg,hicpp-vararg)
+        std::ptrdiff_t len = (std::snprintf)(number_buffer.data(), number_buffer.size(), "%.*g", d, x);
+
+        // negative value indicates an error
+        JSON_ASSERT(len > 0);
+        // check if buffer was large enough
+        JSON_ASSERT(static_cast<std::size_t>(len) < number_buffer.size());
+
+        // erase thousands separator
+        if (thousands_sep != '\0')
+        {
+            // NOLINTNEXTLINE(readability-qualified-auto,llvm-qualified-auto): std::remove returns an iterator, see https://github.com/nlohmann/json/issues/3081
+            const auto end = std::remove(number_buffer.begin(), number_buffer.begin() + len, thousands_sep);
+            std::fill(end, number_buffer.end(), '\0');
+            JSON_ASSERT((end - number_buffer.begin()) <= len);
+            len = (end - number_buffer.begin());
+        }
+
+        // convert decimal point to '.'
+        if (decimal_point != '\0' && decimal_point != '.')
+        {
+            // NOLINTNEXTLINE(readability-qualified-auto,llvm-qualified-auto): std::find returns an iterator, see https://github.com/nlohmann/json/issues/3081
+            const auto dec_pos = std::find(number_buffer.begin(), number_buffer.end(), decimal_point);
+            if (dec_pos != number_buffer.end())
+            {
+                *dec_pos = '.';
+            }
+        }
+
+        o->write_characters(number_buffer.data(), static_cast<std::size_t>(len));
+
+        // determine if we need to append ".0"
+        const bool value_is_int_like =
+            std::none_of(number_buffer.begin(), number_buffer.begin() + len + 1,
+                         [](char c)
+        {
+            return c == '.' || c == 'e';
+        });
+
+        if (value_is_int_like)
+        {
+            o->write_characters(".0", 2);
+        }
+    }
+
+    /*!
+    @brief check whether a string is UTF-8 encoded
+
+    The function checks each byte of a string whether it is UTF-8 encoded. The
+    result of the check is stored in the @a state parameter. The function must
+    be called initially with state 0 (accept). State 1 means the string must
+    be rejected, because the current byte is not allowed. If the string is
+    completely processed, but the state is non-zero, the string ended
+    prematurely; that is, the last byte indicated more bytes should have
+    followed.
+
+    @param[in,out] state  the state of the decoding
+    @param[in,out] codep  codepoint (valid only if resulting state is UTF8_ACCEPT)
+    @param[in] byte       next byte to decode
+    @return               new state
+
+    @note The function has been edited: a std::array is used.
+
+    @copyright Copyright (c) 2008-2009 Bjoern Hoehrmann <bjoern@hoehrmann.de>
+    @sa http://bjoern.hoehrmann.de/utf-8/decoder/dfa/
+    */
+    static std::uint8_t decode(std::uint8_t& state, std::uint32_t& codep, const std::uint8_t byte) noexcept
+    {
+        static const std::array<std::uint8_t, 400> utf8d =
+        {
+            {
+                0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 00..1F
+                0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 20..3F
+                0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 40..5F
+                0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 60..7F
+                1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, // 80..9F
+                7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, // A0..BF
+                8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, // C0..DF
+                0xA, 0x3, 0x3, 0x3, 0x3, 0x3, 0x3, 0x3, 0x3, 0x3, 0x3, 0x3, 0x3, 0x4, 0x3, 0x3, // E0..EF
+                0xB, 0x6, 0x6, 0x6, 0x5, 0x8, 0x8, 0x8, 0x8, 0x8, 0x8, 0x8, 0x8, 0x8, 0x8, 0x8, // F0..FF
+                0x0, 0x1, 0x2, 0x3, 0x5, 0x8, 0x7, 0x1, 0x1, 0x1, 0x4, 0x6, 0x1, 0x1, 0x1, 0x1, // s0..s0
+                1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 0, 1, 0, 1, 1, 1, 1, 1, 1, // s1..s2
+                1, 2, 1, 1, 1, 1, 1, 2, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, // s3..s4
+                1, 2, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 3, 1, 3, 1, 1, 1, 1, 1, 1, // s5..s6
+                1, 3, 1, 1, 1, 1, 1, 3, 1, 3, 1, 1, 1, 1, 1, 1, 1, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 // s7..s8
+            }
+        };
+
+        JSON_ASSERT(byte < utf8d.size());
+        const std::uint8_t type = utf8d[byte];
+
+        codep = (state != UTF8_ACCEPT)
+                ? (byte & 0x3fu) | (codep << 6u)
+                : (0xFFu >> type) & (byte);
+
+        const std::size_t index = 256u + static_cast<size_t>(state) * 16u + static_cast<size_t>(type);
+        JSON_ASSERT(index < utf8d.size());
+        state = utf8d[index];
+        return state;
+    }
+
+    /*
+     * Overload to make the compiler happy while it is instantiating
+     * dump_integer for number_unsigned_t.
+     * Must never be called.
+     */
+    number_unsigned_t remove_sign(number_unsigned_t x)
+    {
+        JSON_ASSERT(false); // NOLINT(cert-dcl03-c,hicpp-static-assert,misc-static-assert) LCOV_EXCL_LINE
+        return x; // LCOV_EXCL_LINE
+    }
+
+    /*
+     * Helper function for dump_integer
+     *
+     * This function takes a negative signed integer and returns its absolute
+     * value as unsigned integer. The plus/minus shuffling is necessary as we can
+     * not directly remove the sign of an arbitrary signed integer as the
+     * absolute values of INT_MIN and INT_MAX are usually not the same. See
+     * #1708 for details.
+     */
+    inline number_unsigned_t remove_sign(number_integer_t x) noexcept
+    {
+        JSON_ASSERT(x < 0 && x < (std::numeric_limits<number_integer_t>::max)()); // NOLINT(misc-redundant-expression)
+        return static_cast<number_unsigned_t>(-(x + 1)) + 1;
+    }
+
+  private:
+    /// the output of the serializer
+    output_adapter_t<char> o = nullptr;
+
+    /// a (hopefully) large enough character buffer
+    std::array<char, 64> number_buffer{{}};
+
+    /// the locale
+    const std::lconv* loc = nullptr;
+    /// the locale's thousand separator character
+    const char thousands_sep = '\0';
+    /// the locale's decimal point character
+    const char decimal_point = '\0';
+
+    /// string buffer
+    std::array<char, 512> string_buffer{{}};
+
+    /// the indentation character
+    const char indent_char;
+    /// the indentation string
+    string_t indent_string;
+
+    /// error_handler how to react on decoding errors
+    const error_handler_t error_handler;
+};
+
+}  // namespace detail
+NLOHMANN_JSON_NAMESPACE_END
+
+// #include <nlohmann/detail/value_t.hpp>
+
+// #include <nlohmann/json_fwd.hpp>
+
+// #include <nlohmann/ordered_map.hpp>
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.2
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013-2022 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+
+
+#include <functional> // equal_to, less
+#include <initializer_list> // initializer_list
+#include <iterator> // input_iterator_tag, iterator_traits
+#include <memory> // allocator
+#include <stdexcept> // for out_of_range
+#include <type_traits> // enable_if, is_convertible
+#include <utility> // pair
+#include <vector> // vector
+
+// #include <nlohmann/detail/macro_scope.hpp>
+
+// #include <nlohmann/detail/meta/type_traits.hpp>
+
+
+NLOHMANN_JSON_NAMESPACE_BEGIN
+
+/// ordered_map: a minimal map-like container that preserves insertion order
+/// for use within nlohmann::basic_json<ordered_map>
+template <class Key, class T, class IgnoredLess = std::less<Key>,
+          class Allocator = std::allocator<std::pair<const Key, T>>>
+                  struct ordered_map : std::vector<std::pair<const Key, T>, Allocator>
+{
+    using key_type = Key;
+    using mapped_type = T;
+    using Container = std::vector<std::pair<const Key, T>, Allocator>;
+    using iterator = typename Container::iterator;
+    using const_iterator = typename Container::const_iterator;
+    using size_type = typename Container::size_type;
+    using value_type = typename Container::value_type;
+#ifdef JSON_HAS_CPP_14
+    using key_compare = std::equal_to<>;
+#else
+    using key_compare = std::equal_to<Key>;
+#endif
+
+    // Explicit constructors instead of `using Container::Container`
+    // otherwise older compilers choke on it (GCC <= 5.5, xcode <= 9.4)
+    ordered_map() noexcept(noexcept(Container())) : Container{} {}
+    explicit ordered_map(const Allocator& alloc) noexcept(noexcept(Container(alloc))) : Container{alloc} {}
+    template <class It>
+    ordered_map(It first, It last, const Allocator& alloc = Allocator())
+        : Container{first, last, alloc} {}
+    ordered_map(std::initializer_list<value_type> init, const Allocator& alloc = Allocator() )
+        : Container{init, alloc} {}
+
+    std::pair<iterator, bool> emplace(const key_type& key, T&& t)
+    {
+        for (auto it = this->begin(); it != this->end(); ++it)
+        {
+            if (m_compare(it->first, key))
+            {
+                return {it, false};
+            }
+        }
+        Container::emplace_back(key, std::forward<T>(t));
+        return {std::prev(this->end()), true};
+    }
+
+    template<class KeyType, detail::enable_if_t<
+                 detail::is_usable_as_key_type<key_compare, key_type, KeyType>::value, int> = 0>
+    std::pair<iterator, bool> emplace(KeyType && key, T && t)
+    {
+        for (auto it = this->begin(); it != this->end(); ++it)
+        {
+            if (m_compare(it->first, key))
+            {
+                return {it, false};
+            }
+        }
+        Container::emplace_back(std::forward<KeyType>(key), std::forward<T>(t));
+        return {std::prev(this->end()), true};
+    }
+
+    T& operator[](const key_type& key)
+    {
+        return emplace(key, T{}).first->second;
+    }
+
+    template<class KeyType, detail::enable_if_t<
+                 detail::is_usable_as_key_type<key_compare, key_type, KeyType>::value, int> = 0>
+    T & operator[](KeyType && key)
+    {
+        return emplace(std::forward<KeyType>(key), T{}).first->second;
+    }
+
+    const T& operator[](const key_type& key) const
+    {
+        return at(key);
+    }
+
+    template<class KeyType, detail::enable_if_t<
+                 detail::is_usable_as_key_type<key_compare, key_type, KeyType>::value, int> = 0>
+    const T & operator[](KeyType && key) const
+    {
+        return at(std::forward<KeyType>(key));
+    }
+
+    T& at(const key_type& key)
+    {
+        for (auto it = this->begin(); it != this->end(); ++it)
+        {
+            if (m_compare(it->first, key))
+            {
+                return it->second;
+            }
+        }
+
+        JSON_THROW(std::out_of_range("key not found"));
+    }
+
+    template<class KeyType, detail::enable_if_t<
+                 detail::is_usable_as_key_type<key_compare, key_type, KeyType>::value, int> = 0>
+    T & at(KeyType && key)
+    {
+        for (auto it = this->begin(); it != this->end(); ++it)
+        {
+            if (m_compare(it->first, key))
+            {
+                return it->second;
+            }
+        }
+
+        JSON_THROW(std::out_of_range("key not found"));
+    }
+
+    const T& at(const key_type& key) const
+    {
+        for (auto it = this->begin(); it != this->end(); ++it)
+        {
+            if (m_compare(it->first, key))
+            {
+                return it->second;
+            }
+        }
+
+        JSON_THROW(std::out_of_range("key not found"));
+    }
+
+    template<class KeyType, detail::enable_if_t<
+                 detail::is_usable_as_key_type<key_compare, key_type, KeyType>::value, int> = 0>
+    const T & at(KeyType && key) const
+    {
+        for (auto it = this->begin(); it != this->end(); ++it)
+        {
+            if (m_compare(it->first, key))
+            {
+                return it->second;
+            }
+        }
+
+        JSON_THROW(std::out_of_range("key not found"));
+    }
+
+    size_type erase(const key_type& key)
+    {
+        for (auto it = this->begin(); it != this->end(); ++it)
+        {
+            if (m_compare(it->first, key))
+            {
+                // Since we cannot move const Keys, re-construct them in place
+                for (auto next = it; ++next != this->end(); ++it)
+                {
+                    it->~value_type(); // Destroy but keep allocation
+                    new (&*it) value_type{std::move(*next)};
+                }
+                Container::pop_back();
+                return 1;
+            }
+        }
+        return 0;
+    }
+
+    template<class KeyType, detail::enable_if_t<
+                 detail::is_usable_as_key_type<key_compare, key_type, KeyType>::value, int> = 0>
+    size_type erase(KeyType && key)
+    {
+        for (auto it = this->begin(); it != this->end(); ++it)
+        {
+            if (m_compare(it->first, key))
+            {
+                // Since we cannot move const Keys, re-construct them in place
+                for (auto next = it; ++next != this->end(); ++it)
+                {
+                    it->~value_type(); // Destroy but keep allocation
+                    new (&*it) value_type{std::move(*next)};
+                }
+                Container::pop_back();
+                return 1;
+            }
+        }
+        return 0;
+    }
+
+    iterator erase(iterator pos)
+    {
+        return erase(pos, std::next(pos));
+    }
+
+    iterator erase(iterator first, iterator last)
+    {
+        if (first == last)
+        {
+            return first;
+        }
+
+        const auto elements_affected = std::distance(first, last);
+        const auto offset = std::distance(Container::begin(), first);
+
+        // This is the start situation. We need to delete elements_affected
+        // elements (3 in this example: e, f, g), and need to return an
+        // iterator past the last deleted element (h in this example).
+        // Note that offset is the distance from the start of the vector
+        // to first. We will need this later.
+
+        // [ a, b, c, d, e, f, g, h, i, j ]
+        //               ^        ^
+        //             first    last
+
+        // Since we cannot move const Keys, we re-construct them in place.
+        // We start at first and re-construct (viz. copy) the elements from
+        // the back of the vector. Example for first iteration:
+
+        //               ,--------.
+        //               v        |   destroy e and re-construct with h
+        // [ a, b, c, d, e, f, g, h, i, j ]
+        //               ^        ^
+        //               it       it + elements_affected
+
+        for (auto it = first; std::next(it, elements_affected) != Container::end(); ++it)
+        {
+            it->~value_type(); // destroy but keep allocation
+            new (&*it) value_type{std::move(*std::next(it, elements_affected))}; // "move" next element to it
+        }
+
+        // [ a, b, c, d, h, i, j, h, i, j ]
+        //               ^        ^
+        //             first    last
+
+        // remove the unneeded elements at the end of the vector
+        Container::resize(this->size() - static_cast<size_type>(elements_affected));
+
+        // [ a, b, c, d, h, i, j ]
+        //               ^        ^
+        //             first    last
+
+        // first is now pointing past the last deleted element, but we cannot
+        // use this iterator, because it may have been invalidated by the
+        // resize call. Instead, we can return begin() + offset.
+        return Container::begin() + offset;
+    }
+
+    size_type count(const key_type& key) const
+    {
+        for (auto it = this->begin(); it != this->end(); ++it)
+        {
+            if (m_compare(it->first, key))
+            {
+                return 1;
+            }
+        }
+        return 0;
+    }
+
+    template<class KeyType, detail::enable_if_t<
+                 detail::is_usable_as_key_type<key_compare, key_type, KeyType>::value, int> = 0>
+    size_type count(KeyType && key) const
+    {
+        for (auto it = this->begin(); it != this->end(); ++it)
+        {
+            if (m_compare(it->first, key))
+            {
+                return 1;
+            }
+        }
+        return 0;
+    }
+
+    iterator find(const key_type& key)
+    {
+        for (auto it = this->begin(); it != this->end(); ++it)
+        {
+            if (m_compare(it->first, key))
+            {
+                return it;
+            }
+        }
+        return Container::end();
+    }
+
+    template<class KeyType, detail::enable_if_t<
+                 detail::is_usable_as_key_type<key_compare, key_type, KeyType>::value, int> = 0>
+    iterator find(KeyType && key)
+    {
+        for (auto it = this->begin(); it != this->end(); ++it)
+        {
+            if (m_compare(it->first, key))
+            {
+                return it;
+            }
+        }
+        return Container::end();
+    }
+
+    const_iterator find(const key_type& key) const
+    {
+        for (auto it = this->begin(); it != this->end(); ++it)
+        {
+            if (m_compare(it->first, key))
+            {
+                return it;
+            }
+        }
+        return Container::end();
+    }
+
+    std::pair<iterator, bool> insert( value_type&& value )
+    {
+        return emplace(value.first, std::move(value.second));
+    }
+
+    std::pair<iterator, bool> insert( const value_type& value )
+    {
+        for (auto it = this->begin(); it != this->end(); ++it)
+        {
+            if (m_compare(it->first, value.first))
+            {
+                return {it, false};
+            }
+        }
+        Container::push_back(value);
+        return {--this->end(), true};
+    }
+
+    template<typename InputIt>
+    using require_input_iter = typename std::enable_if<std::is_convertible<typename std::iterator_traits<InputIt>::iterator_category,
+            std::input_iterator_tag>::value>::type;
+
+    template<typename InputIt, typename = require_input_iter<InputIt>>
+    void insert(InputIt first, InputIt last)
+    {
+        for (auto it = first; it != last; ++it)
+        {
+            insert(*it);
+        }
+    }
+
+private:
+    JSON_NO_UNIQUE_ADDRESS key_compare m_compare = key_compare();
+};
+
+NLOHMANN_JSON_NAMESPACE_END
+
+
+#if defined(JSON_HAS_CPP_17)
+    #include <any>
+    #include <string_view>
+#endif
+
+/*!
+@brief namespace for Niels Lohmann
+@see https://github.com/nlohmann
+@since version 1.0.0
+*/
+NLOHMANN_JSON_NAMESPACE_BEGIN
+
+/*!
+@brief a class to store JSON values
+
+@internal
+@invariant The member variables @a m_value and @a m_type have the following
+relationship:
+- If `m_type == value_t::object`, then `m_value.object != nullptr`.
+- If `m_type == value_t::array`, then `m_value.array != nullptr`.
+- If `m_type == value_t::string`, then `m_value.string != nullptr`.
+The invariants are checked by member function assert_invariant().
+
+@note ObjectType trick from https://stackoverflow.com/a/9860911
+@endinternal
+
+@since version 1.0.0
+
+@nosubgrouping
+*/
+NLOHMANN_BASIC_JSON_TPL_DECLARATION
+class basic_json // NOLINT(cppcoreguidelines-special-member-functions,hicpp-special-member-functions)
+    : public ::nlohmann::detail::json_base_class<CustomBaseClass>
+{
+  private:
+    template<detail::value_t> friend struct detail::external_constructor;
+
+    template<typename>
+    friend class ::nlohmann::json_pointer;
+    // can be restored when json_pointer backwards compatibility is removed
+    // friend ::nlohmann::json_pointer<StringType>;
+
+    template<typename BasicJsonType, typename InputType>
+    friend class ::nlohmann::detail::parser;
+    friend ::nlohmann::detail::serializer<basic_json>;
+    template<typename BasicJsonType>
+    friend class ::nlohmann::detail::iter_impl;
+    template<typename BasicJsonType, typename CharType>
+    friend class ::nlohmann::detail::binary_writer;
+    template<typename BasicJsonType, typename InputType, typename SAX>
+    friend class ::nlohmann::detail::binary_reader;
+    template<typename BasicJsonType>
+    friend class ::nlohmann::detail::json_sax_dom_parser;
+    template<typename BasicJsonType>
+    friend class ::nlohmann::detail::json_sax_dom_callback_parser;
+    friend class ::nlohmann::detail::exception;
+
+    /// workaround type for MSVC
+    using basic_json_t = NLOHMANN_BASIC_JSON_TPL;
+    using json_base_class_t = ::nlohmann::detail::json_base_class<CustomBaseClass>;
+
+  JSON_PRIVATE_UNLESS_TESTED:
+    // convenience aliases for types residing in namespace detail;
+    using lexer = ::nlohmann::detail::lexer_base<basic_json>;
+
+    template<typename InputAdapterType>
+    static ::nlohmann::detail::parser<basic_json, InputAdapterType> parser(
+        InputAdapterType adapter,
+        detail::parser_callback_t<basic_json>cb = nullptr,
+        const bool allow_exceptions = true,
+        const bool ignore_comments = false
+                                 )
+    {
+        return ::nlohmann::detail::parser<basic_json, InputAdapterType>(std::move(adapter),
+                std::move(cb), allow_exceptions, ignore_comments);
+    }
+
+  private:
+    using primitive_iterator_t = ::nlohmann::detail::primitive_iterator_t;
+    template<typename BasicJsonType>
+    using internal_iterator = ::nlohmann::detail::internal_iterator<BasicJsonType>;
+    template<typename BasicJsonType>
+    using iter_impl = ::nlohmann::detail::iter_impl<BasicJsonType>;
+    template<typename Iterator>
+    using iteration_proxy = ::nlohmann::detail::iteration_proxy<Iterator>;
+    template<typename Base> using json_reverse_iterator = ::nlohmann::detail::json_reverse_iterator<Base>;
+
+    template<typename CharType>
+    using output_adapter_t = ::nlohmann::detail::output_adapter_t<CharType>;
+
+    template<typename InputType>
+    using binary_reader = ::nlohmann::detail::binary_reader<basic_json, InputType>;
+    template<typename CharType> using binary_writer = ::nlohmann::detail::binary_writer<basic_json, CharType>;
+
+  JSON_PRIVATE_UNLESS_TESTED:
+    using serializer = ::nlohmann::detail::serializer<basic_json>;
+
+  public:
+    using value_t = detail::value_t;
+    /// JSON Pointer, see @ref nlohmann::json_pointer
+    using json_pointer = ::nlohmann::json_pointer<StringType>;
+    template<typename T, typename SFINAE>
+    using json_serializer = JSONSerializer<T, SFINAE>;
+    /// how to treat decoding errors
+    using error_handler_t = detail::error_handler_t;
+    /// how to treat CBOR tags
+    using cbor_tag_handler_t = detail::cbor_tag_handler_t;
+    /// helper type for initializer lists of basic_json values
+    using initializer_list_t = std::initializer_list<detail::json_ref<basic_json>>;
+
+    using input_format_t = detail::input_format_t;
+    /// SAX interface type, see @ref nlohmann::json_sax
+    using json_sax_t = json_sax<basic_json>;
+
+    ////////////////
+    // exceptions //
+    ////////////////
+
+    /// @name exceptions
+    /// Classes to implement user-defined exceptions.
+    /// @{
+
+    using exception = detail::exception;
+    using parse_error = detail::parse_error;
+    using invalid_iterator = detail::invalid_iterator;
+    using type_error = detail::type_error;
+    using out_of_range = detail::out_of_range;
+    using other_error = detail::other_error;
+
+    /// @}
+
+
+    /////////////////////
+    // container types //
+    /////////////////////
+
+    /// @name container types
+    /// The canonic container types to use @ref basic_json like any other STL
+    /// container.
+    /// @{
+
+    /// the type of elements in a basic_json container
+    using value_type = basic_json;
+
+    /// the type of an element reference
+    using reference = value_type&;
+    /// the type of an element const reference
+    using const_reference = const value_type&;
+
+    /// a type to represent differences between iterators
+    using difference_type = std::ptrdiff_t;
+    /// a type to represent container sizes
+    using size_type = std::size_t;
+
+    /// the allocator type
+    using allocator_type = AllocatorType<basic_json>;
+
+    /// the type of an element pointer
+    using pointer = typename std::allocator_traits<allocator_type>::pointer;
+    /// the type of an element const pointer
+    using const_pointer = typename std::allocator_traits<allocator_type>::const_pointer;
+
+    /// an iterator for a basic_json container
+    using iterator = iter_impl<basic_json>;
+    /// a const iterator for a basic_json container
+    using const_iterator = iter_impl<const basic_json>;
+    /// a reverse iterator for a basic_json container
+    using reverse_iterator = json_reverse_iterator<typename basic_json::iterator>;
+    /// a const reverse iterator for a basic_json container
+    using const_reverse_iterator = json_reverse_iterator<typename basic_json::const_iterator>;
+
+    /// @}
+
+
+    /// @brief returns the allocator associated with the container
+    /// @sa https://json.nlohmann.me/api/basic_json/get_allocator/
+    static allocator_type get_allocator()
+    {
+        return allocator_type();
+    }
+
+    /// @brief returns version information on the library
+    /// @sa https://json.nlohmann.me/api/basic_json/meta/
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    static basic_json meta()
+    {
+        basic_json result;
+
+        result["copyright"] = "(C) 2013-2022 Niels Lohmann";
+        result["name"] = "JSON for Modern C++";
+        result["url"] = "https://github.com/nlohmann/json";
+        result["version"]["string"] =
+            detail::concat(std::to_string(NLOHMANN_JSON_VERSION_MAJOR), '.',
+                           std::to_string(NLOHMANN_JSON_VERSION_MINOR), '.',
+                           std::to_string(NLOHMANN_JSON_VERSION_PATCH));
+        result["version"]["major"] = NLOHMANN_JSON_VERSION_MAJOR;
+        result["version"]["minor"] = NLOHMANN_JSON_VERSION_MINOR;
+        result["version"]["patch"] = NLOHMANN_JSON_VERSION_PATCH;
+
+#ifdef _WIN32
+        result["platform"] = "win32";
+#elif defined __linux__
+        result["platform"] = "linux";
+#elif defined __APPLE__
+        result["platform"] = "apple";
+#elif defined __unix__
+        result["platform"] = "unix";
+#else
+        result["platform"] = "unknown";
+#endif
+
+#if defined(__ICC) || defined(__INTEL_COMPILER)
+        result["compiler"] = {{"family", "icc"}, {"version", __INTEL_COMPILER}};
+#elif defined(__clang__)
+        result["compiler"] = {{"family", "clang"}, {"version", __clang_version__}};
+#elif defined(__GNUC__) || defined(__GNUG__)
+        result["compiler"] = {{"family", "gcc"}, {"version", detail::concat(
+                    std::to_string(__GNUC__), '.',
+                    std::to_string(__GNUC_MINOR__), '.',
+                    std::to_string(__GNUC_PATCHLEVEL__))
+            }
+        };
+#elif defined(__HP_cc) || defined(__HP_aCC)
+        result["compiler"] = "hp"
+#elif defined(__IBMCPP__)
+        result["compiler"] = {{"family", "ilecpp"}, {"version", __IBMCPP__}};
+#elif defined(_MSC_VER)
+        result["compiler"] = {{"family", "msvc"}, {"version", _MSC_VER}};
+#elif defined(__PGI)
+        result["compiler"] = {{"family", "pgcpp"}, {"version", __PGI}};
+#elif defined(__SUNPRO_CC)
+        result["compiler"] = {{"family", "sunpro"}, {"version", __SUNPRO_CC}};
+#else
+        result["compiler"] = {{"family", "unknown"}, {"version", "unknown"}};
+#endif
+
+
+#if defined(_MSVC_LANG)
+        result["compiler"]["c++"] = std::to_string(_MSVC_LANG);
+#elif defined(__cplusplus)
+        result["compiler"]["c++"] = std::to_string(__cplusplus);
+#else
+        result["compiler"]["c++"] = "unknown";
+#endif
+        return result;
+    }
+
+
+    ///////////////////////////
+    // JSON value data types //
+    ///////////////////////////
+
+    /// @name JSON value data types
+    /// The data types to store a JSON value. These types are derived from
+    /// the template arguments passed to class @ref basic_json.
+    /// @{
+
+    /// @brief default object key comparator type
+    /// The actual object key comparator type (@ref object_comparator_t) may be
+    /// different.
+    /// @sa https://json.nlohmann.me/api/basic_json/default_object_comparator_t/
+#if defined(JSON_HAS_CPP_14)
+    // use of transparent comparator avoids unnecessary repeated construction of temporaries
+    // in functions involving lookup by key with types other than object_t::key_type (aka. StringType)
+    using default_object_comparator_t = std::less<>;
+#else
+    using default_object_comparator_t = std::less<StringType>;
+#endif
+
+    /// @brief a type for an object
+    /// @sa https://json.nlohmann.me/api/basic_json/object_t/
+    using object_t = ObjectType<StringType,
+          basic_json,
+          default_object_comparator_t,
+          AllocatorType<std::pair<const StringType,
+          basic_json>>>;
+
+    /// @brief a type for an array
+    /// @sa https://json.nlohmann.me/api/basic_json/array_t/
+    using array_t = ArrayType<basic_json, AllocatorType<basic_json>>;
+
+    /// @brief a type for a string
+    /// @sa https://json.nlohmann.me/api/basic_json/string_t/
+    using string_t = StringType;
+
+    /// @brief a type for a boolean
+    /// @sa https://json.nlohmann.me/api/basic_json/boolean_t/
+    using boolean_t = BooleanType;
+
+    /// @brief a type for a number (integer)
+    /// @sa https://json.nlohmann.me/api/basic_json/number_integer_t/
+    using number_integer_t = NumberIntegerType;
+
+    /// @brief a type for a number (unsigned)
+    /// @sa https://json.nlohmann.me/api/basic_json/number_unsigned_t/
+    using number_unsigned_t = NumberUnsignedType;
+
+    /// @brief a type for a number (floating-point)
+    /// @sa https://json.nlohmann.me/api/basic_json/number_float_t/
+    using number_float_t = NumberFloatType;
+
+    /// @brief a type for a packed binary type
+    /// @sa https://json.nlohmann.me/api/basic_json/binary_t/
+    using binary_t = nlohmann::byte_container_with_subtype<BinaryType>;
+
+    /// @brief object key comparator type
+    /// @sa https://json.nlohmann.me/api/basic_json/object_comparator_t/
+    using object_comparator_t = detail::actual_object_comparator_t<basic_json>;
+
+    /// @}
+
+  private:
+
+    /// helper for exception-safe object creation
+    template<typename T, typename... Args>
+    JSON_HEDLEY_RETURNS_NON_NULL
+    static T* create(Args&& ... args)
+    {
+        AllocatorType<T> alloc;
+        using AllocatorTraits = std::allocator_traits<AllocatorType<T>>;
+
+        auto deleter = [&](T * obj)
+        {
+            AllocatorTraits::deallocate(alloc, obj, 1);
+        };
+        std::unique_ptr<T, decltype(deleter)> obj(AllocatorTraits::allocate(alloc, 1), deleter);
+        AllocatorTraits::construct(alloc, obj.get(), std::forward<Args>(args)...);
+        JSON_ASSERT(obj != nullptr);
+        return obj.release();
+    }
+
+    ////////////////////////
+    // JSON value storage //
+    ////////////////////////
+
+  JSON_PRIVATE_UNLESS_TESTED:
+    /*!
+    @brief a JSON value
+
+    The actual storage for a JSON value of the @ref basic_json class. This
+    union combines the different storage types for the JSON value types
+    defined in @ref value_t.
+
+    JSON type | value_t type    | used type
+    --------- | --------------- | ------------------------
+    object    | object          | pointer to @ref object_t
+    array     | array           | pointer to @ref array_t
+    string    | string          | pointer to @ref string_t
+    boolean   | boolean         | @ref boolean_t
+    number    | number_integer  | @ref number_integer_t
+    number    | number_unsigned | @ref number_unsigned_t
+    number    | number_float    | @ref number_float_t
+    binary    | binary          | pointer to @ref binary_t
+    null      | null            | *no value is stored*
+
+    @note Variable-length types (objects, arrays, and strings) are stored as
+    pointers. The size of the union should not exceed 64 bits if the default
+    value types are used.
+
+    @since version 1.0.0
+    */
+    union json_value
+    {
+        /// object (stored with pointer to save storage)
+        object_t* object;
+        /// array (stored with pointer to save storage)
+        array_t* array;
+        /// string (stored with pointer to save storage)
+        string_t* string;
+        /// binary (stored with pointer to save storage)
+        binary_t* binary;
+        /// boolean
+        boolean_t boolean;
+        /// number (integer)
+        number_integer_t number_integer;
+        /// number (unsigned integer)
+        number_unsigned_t number_unsigned;
+        /// number (floating-point)
+        number_float_t number_float;
+
+        /// default constructor (for null values)
+        json_value() = default;
+        /// constructor for booleans
+        json_value(boolean_t v) noexcept : boolean(v) {}
+        /// constructor for numbers (integer)
+        json_value(number_integer_t v) noexcept : number_integer(v) {}
+        /// constructor for numbers (unsigned)
+        json_value(number_unsigned_t v) noexcept : number_unsigned(v) {}
+        /// constructor for numbers (floating-point)
+        json_value(number_float_t v) noexcept : number_float(v) {}
+        /// constructor for empty values of a given type
+        json_value(value_t t)
+        {
+            switch (t)
+            {
+                case value_t::object:
+                {
+                    object = create<object_t>();
+                    break;
+                }
+
+                case value_t::array:
+                {
+                    array = create<array_t>();
+                    break;
+                }
+
+                case value_t::string:
+                {
+                    string = create<string_t>("");
+                    break;
+                }
+
+                case value_t::binary:
+                {
+                    binary = create<binary_t>();
+                    break;
+                }
+
+                case value_t::boolean:
+                {
+                    boolean = static_cast<boolean_t>(false);
+                    break;
+                }
+
+                case value_t::number_integer:
+                {
+                    number_integer = static_cast<number_integer_t>(0);
+                    break;
+                }
+
+                case value_t::number_unsigned:
+                {
+                    number_unsigned = static_cast<number_unsigned_t>(0);
+                    break;
+                }
+
+                case value_t::number_float:
+                {
+                    number_float = static_cast<number_float_t>(0.0);
+                    break;
+                }
+
+                case value_t::null:
+                {
+                    object = nullptr;  // silence warning, see #821
+                    break;
+                }
+
+                case value_t::discarded:
+                default:
+                {
+                    object = nullptr;  // silence warning, see #821
+                    if (JSON_HEDLEY_UNLIKELY(t == value_t::null))
+                    {
+                        JSON_THROW(other_error::create(500, "961c151d2e87f2686a955a9be24d316f1362bf21 3.11.2", nullptr)); // LCOV_EXCL_LINE
+                    }
+                    break;
+                }
+            }
+        }
+
+        /// constructor for strings
+        json_value(const string_t& value) : string(create<string_t>(value)) {}
+
+        /// constructor for rvalue strings
+        json_value(string_t&& value) : string(create<string_t>(std::move(value))) {}
+
+        /// constructor for objects
+        json_value(const object_t& value) : object(create<object_t>(value)) {}
+
+        /// constructor for rvalue objects
+        json_value(object_t&& value) : object(create<object_t>(std::move(value))) {}
+
+        /// constructor for arrays
+        json_value(const array_t& value) : array(create<array_t>(value)) {}
+
+        /// constructor for rvalue arrays
+        json_value(array_t&& value) : array(create<array_t>(std::move(value))) {}
+
+        /// constructor for binary arrays
+        json_value(const typename binary_t::container_type& value) : binary(create<binary_t>(value)) {}
+
+        /// constructor for rvalue binary arrays
+        json_value(typename binary_t::container_type&& value) : binary(create<binary_t>(std::move(value))) {}
+
+        /// constructor for binary arrays (internal type)
+        json_value(const binary_t& value) : binary(create<binary_t>(value)) {}
+
+        /// constructor for rvalue binary arrays (internal type)
+        json_value(binary_t&& value) : binary(create<binary_t>(std::move(value))) {}
+
+        void destroy(value_t t)
+        {
+            if (
+                (t == value_t::object && object == nullptr) ||
+                (t == value_t::array && array == nullptr) ||
+                (t == value_t::string && string == nullptr) ||
+                (t == value_t::binary && binary == nullptr)
+            )
+            {
+                //not initialized (e.g. due to exception in the ctor)
+                return;
+            }
+            if (t == value_t::array || t == value_t::object)
+            {
+                // flatten the current json_value to a heap-allocated stack
+                std::vector<basic_json> stack;
+
+                // move the top-level items to stack
+                if (t == value_t::array)
+                {
+                    stack.reserve(array->size());
+                    std::move(array->begin(), array->end(), std::back_inserter(stack));
+                }
+                else
+                {
+                    stack.reserve(object->size());
+                    for (auto&& it : *object)
+                    {
+                        stack.push_back(std::move(it.second));
+                    }
+                }
+
+                while (!stack.empty())
+                {
+                    // move the last item to local variable to be processed
+                    basic_json current_item(std::move(stack.back()));
+                    stack.pop_back();
+
+                    // if current_item is array/object, move
+                    // its children to the stack to be processed later
+                    if (current_item.is_array())
+                    {
+                        std::move(current_item.m_data.m_value.array->begin(), current_item.m_data.m_value.array->end(), std::back_inserter(stack));
+
+                        current_item.m_data.m_value.array->clear();
+                    }
+                    else if (current_item.is_object())
+                    {
+                        for (auto&& it : *current_item.m_data.m_value.object)
+                        {
+                            stack.push_back(std::move(it.second));
+                        }
+
+                        current_item.m_data.m_value.object->clear();
+                    }
+
+                    // it's now safe that current_item get destructed
+                    // since it doesn't have any children
+                }
+            }
+
+            switch (t)
+            {
+                case value_t::object:
+                {
+                    AllocatorType<object_t> alloc;
+                    std::allocator_traits<decltype(alloc)>::destroy(alloc, object);
+                    std::allocator_traits<decltype(alloc)>::deallocate(alloc, object, 1);
+                    break;
+                }
+
+                case value_t::array:
+                {
+                    AllocatorType<array_t> alloc;
+                    std::allocator_traits<decltype(alloc)>::destroy(alloc, array);
+                    std::allocator_traits<decltype(alloc)>::deallocate(alloc, array, 1);
+                    break;
+                }
+
+                case value_t::string:
+                {
+                    AllocatorType<string_t> alloc;
+                    std::allocator_traits<decltype(alloc)>::destroy(alloc, string);
+                    std::allocator_traits<decltype(alloc)>::deallocate(alloc, string, 1);
+                    break;
+                }
+
+                case value_t::binary:
+                {
+                    AllocatorType<binary_t> alloc;
+                    std::allocator_traits<decltype(alloc)>::destroy(alloc, binary);
+                    std::allocator_traits<decltype(alloc)>::deallocate(alloc, binary, 1);
+                    break;
+                }
+
+                case value_t::null:
+                case value_t::boolean:
+                case value_t::number_integer:
+                case value_t::number_unsigned:
+                case value_t::number_float:
+                case value_t::discarded:
+                default:
+                {
+                    break;
+                }
+            }
+        }
+    };
+
+  private:
+    /*!
+    @brief checks the class invariants
+
+    This function asserts the class invariants. It needs to be called at the
+    end of every constructor to make sure that created objects respect the
+    invariant. Furthermore, it has to be called each time the type of a JSON
+    value is changed, because the invariant expresses a relationship between
+    @a m_type and @a m_value.
+
+    Furthermore, the parent relation is checked for arrays and objects: If
+    @a check_parents true and the value is an array or object, then the
+    container's elements must have the current value as parent.
+
+    @param[in] check_parents  whether the parent relation should be checked.
+               The value is true by default and should only be set to false
+               during destruction of objects when the invariant does not
+               need to hold.
+    */
+    void assert_invariant(bool check_parents = true) const noexcept
+    {
+        JSON_ASSERT(m_data.m_type != value_t::object || m_data.m_value.object != nullptr);
+        JSON_ASSERT(m_data.m_type != value_t::array || m_data.m_value.array != nullptr);
+        JSON_ASSERT(m_data.m_type != value_t::string || m_data.m_value.string != nullptr);
+        JSON_ASSERT(m_data.m_type != value_t::binary || m_data.m_value.binary != nullptr);
+
+#if JSON_DIAGNOSTICS
+        JSON_TRY
+        {
+            // cppcheck-suppress assertWithSideEffect
+            JSON_ASSERT(!check_parents || !is_structured() || std::all_of(begin(), end(), [this](const basic_json & j)
+            {
+                return j.m_parent == this;
+            }));
+        }
+        JSON_CATCH(...) {} // LCOV_EXCL_LINE
+#endif
+        static_cast<void>(check_parents);
+    }
+
+    void set_parents()
+    {
+#if JSON_DIAGNOSTICS
+        switch (m_data.m_type)
+        {
+            case value_t::array:
+            {
+                for (auto& element : *m_data.m_value.array)
+                {
+                    element.m_parent = this;
+                }
+                break;
+            }
+
+            case value_t::object:
+            {
+                for (auto& element : *m_data.m_value.object)
+                {
+                    element.second.m_parent = this;
+                }
+                break;
+            }
+
+            case value_t::null:
+            case value_t::string:
+            case value_t::boolean:
+            case value_t::number_integer:
+            case value_t::number_unsigned:
+            case value_t::number_float:
+            case value_t::binary:
+            case value_t::discarded:
+            default:
+                break;
+        }
+#endif
+    }
+
+    iterator set_parents(iterator it, typename iterator::difference_type count_set_parents)
+    {
+#if JSON_DIAGNOSTICS
+        for (typename iterator::difference_type i = 0; i < count_set_parents; ++i)
+        {
+            (it + i)->m_parent = this;
+        }
+#else
+        static_cast<void>(count_set_parents);
+#endif
+        return it;
+    }
+
+    reference set_parent(reference j, std::size_t old_capacity = static_cast<std::size_t>(-1))
+    {
+#if JSON_DIAGNOSTICS
+        if (old_capacity != static_cast<std::size_t>(-1))
+        {
+            // see https://github.com/nlohmann/json/issues/2838
+            JSON_ASSERT(type() == value_t::array);
+            if (JSON_HEDLEY_UNLIKELY(m_data.m_value.array->capacity() != old_capacity))
+            {
+                // capacity has changed: update all parents
+                set_parents();
+                return j;
+            }
+        }
+
+        // ordered_json uses a vector internally, so pointers could have
+        // been invalidated; see https://github.com/nlohmann/json/issues/2962
+#ifdef JSON_HEDLEY_MSVC_VERSION
+#pragma warning(push )
+#pragma warning(disable : 4127) // ignore warning to replace if with if constexpr
+#endif
+        if (detail::is_ordered_map<object_t>::value)
+        {
+            set_parents();
+            return j;
+        }
+#ifdef JSON_HEDLEY_MSVC_VERSION
+#pragma warning( pop )
+#endif
+
+        j.m_parent = this;
+#else
+        static_cast<void>(j);
+        static_cast<void>(old_capacity);
+#endif
+        return j;
+    }
+
+  public:
+    //////////////////////////
+    // JSON parser callback //
+    //////////////////////////
+
+    /// @brief parser event types
+    /// @sa https://json.nlohmann.me/api/basic_json/parse_event_t/
+    using parse_event_t = detail::parse_event_t;
+
+    /// @brief per-element parser callback type
+    /// @sa https://json.nlohmann.me/api/basic_json/parser_callback_t/
+    using parser_callback_t = detail::parser_callback_t<basic_json>;
+
+    //////////////////
+    // constructors //
+    //////////////////
+
+    /// @name constructors and destructors
+    /// Constructors of class @ref basic_json, copy/move constructor, copy
+    /// assignment, static functions creating objects, and the destructor.
+    /// @{
+
+    /// @brief create an empty value with a given type
+    /// @sa https://json.nlohmann.me/api/basic_json/basic_json/
+    basic_json(const value_t v)
+        : m_data(v)
+    {
+        assert_invariant();
+    }
+
+    /// @brief create a null object
+    /// @sa https://json.nlohmann.me/api/basic_json/basic_json/
+    basic_json(std::nullptr_t = nullptr) noexcept // NOLINT(bugprone-exception-escape)
+        : basic_json(value_t::null)
+    {
+        assert_invariant();
+    }
+
+    /// @brief create a JSON value from compatible types
+    /// @sa https://json.nlohmann.me/api/basic_json/basic_json/
+    template < typename CompatibleType,
+               typename U = detail::uncvref_t<CompatibleType>,
+               detail::enable_if_t <
+                   !detail::is_basic_json<U>::value && detail::is_compatible_type<basic_json_t, U>::value, int > = 0 >
+    basic_json(CompatibleType && val) noexcept(noexcept( // NOLINT(bugprone-forwarding-reference-overload,bugprone-exception-escape)
+                JSONSerializer<U>::to_json(std::declval<basic_json_t&>(),
+                                           std::forward<CompatibleType>(val))))
+    {
+        JSONSerializer<U>::to_json(*this, std::forward<CompatibleType>(val));
+        set_parents();
+        assert_invariant();
+    }
+
+    /// @brief create a JSON value from an existing one
+    /// @sa https://json.nlohmann.me/api/basic_json/basic_json/
+    template < typename BasicJsonType,
+               detail::enable_if_t <
+                   detail::is_basic_json<BasicJsonType>::value&& !std::is_same<basic_json, BasicJsonType>::value, int > = 0 >
+    basic_json(const BasicJsonType& val)
+    {
+        using other_boolean_t = typename BasicJsonType::boolean_t;
+        using other_number_float_t = typename BasicJsonType::number_float_t;
+        using other_number_integer_t = typename BasicJsonType::number_integer_t;
+        using other_number_unsigned_t = typename BasicJsonType::number_unsigned_t;
+        using other_string_t = typename BasicJsonType::string_t;
+        using other_object_t = typename BasicJsonType::object_t;
+        using other_array_t = typename BasicJsonType::array_t;
+        using other_binary_t = typename BasicJsonType::binary_t;
+
+        switch (val.type())
+        {
+            case value_t::boolean:
+                JSONSerializer<other_boolean_t>::to_json(*this, val.template get<other_boolean_t>());
+                break;
+            case value_t::number_float:
+                JSONSerializer<other_number_float_t>::to_json(*this, val.template get<other_number_float_t>());
+                break;
+            case value_t::number_integer:
+                JSONSerializer<other_number_integer_t>::to_json(*this, val.template get<other_number_integer_t>());
+                break;
+            case value_t::number_unsigned:
+                JSONSerializer<other_number_unsigned_t>::to_json(*this, val.template get<other_number_unsigned_t>());
+                break;
+            case value_t::string:
+                JSONSerializer<other_string_t>::to_json(*this, val.template get_ref<const other_string_t&>());
+                break;
+            case value_t::object:
+                JSONSerializer<other_object_t>::to_json(*this, val.template get_ref<const other_object_t&>());
+                break;
+            case value_t::array:
+                JSONSerializer<other_array_t>::to_json(*this, val.template get_ref<const other_array_t&>());
+                break;
+            case value_t::binary:
+                JSONSerializer<other_binary_t>::to_json(*this, val.template get_ref<const other_binary_t&>());
+                break;
+            case value_t::null:
+                *this = nullptr;
+                break;
+            case value_t::discarded:
+                m_data.m_type = value_t::discarded;
+                break;
+            default:            // LCOV_EXCL_LINE
+                JSON_ASSERT(false); // NOLINT(cert-dcl03-c,hicpp-static-assert,misc-static-assert) LCOV_EXCL_LINE
+        }
+        JSON_ASSERT(m_data.m_type == val.type());
+        set_parents();
+        assert_invariant();
+    }
+
+    /// @brief create a container (array or object) from an initializer list
+    /// @sa https://json.nlohmann.me/api/basic_json/basic_json/
+    basic_json(initializer_list_t init,
+               bool type_deduction = true,
+               value_t manual_type = value_t::array)
+    {
+        // check if each element is an array with two elements whose first
+        // element is a string
+        bool is_an_object = std::all_of(init.begin(), init.end(),
+                                        [](const detail::json_ref<basic_json>& element_ref)
+        {
+            return element_ref->is_array() && element_ref->size() == 2 && (*element_ref)[0].is_string();
+        });
+
+        // adjust type if type deduction is not wanted
+        if (!type_deduction)
+        {
+            // if array is wanted, do not create an object though possible
+            if (manual_type == value_t::array)
+            {
+                is_an_object = false;
+            }
+
+            // if object is wanted but impossible, throw an exception
+            if (JSON_HEDLEY_UNLIKELY(manual_type == value_t::object && !is_an_object))
+            {
+                JSON_THROW(type_error::create(301, "cannot create object from initializer list", nullptr));
+            }
+        }
+
+        if (is_an_object)
+        {
+            // the initializer list is a list of pairs -> create object
+            m_data.m_type = value_t::object;
+            m_data.m_value = value_t::object;
+
+            for (auto& element_ref : init)
+            {
+                auto element = element_ref.moved_or_copied();
+                m_data.m_value.object->emplace(
+                    std::move(*((*element.m_data.m_value.array)[0].m_data.m_value.string)),
+                    std::move((*element.m_data.m_value.array)[1]));
+            }
+        }
+        else
+        {
+            // the initializer list describes an array -> create array
+            m_data.m_type = value_t::array;
+            m_data.m_value.array = create<array_t>(init.begin(), init.end());
+        }
+
+        set_parents();
+        assert_invariant();
+    }
+
+    /// @brief explicitly create a binary array (without subtype)
+    /// @sa https://json.nlohmann.me/api/basic_json/binary/
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    static basic_json binary(const typename binary_t::container_type& init)
+    {
+        auto res = basic_json();
+        res.m_data.m_type = value_t::binary;
+        res.m_data.m_value = init;
+        return res;
+    }
+
+    /// @brief explicitly create a binary array (with subtype)
+    /// @sa https://json.nlohmann.me/api/basic_json/binary/
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    static basic_json binary(const typename binary_t::container_type& init, typename binary_t::subtype_type subtype)
+    {
+        auto res = basic_json();
+        res.m_data.m_type = value_t::binary;
+        res.m_data.m_value = binary_t(init, subtype);
+        return res;
+    }
+
+    /// @brief explicitly create a binary array
+    /// @sa https://json.nlohmann.me/api/basic_json/binary/
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    static basic_json binary(typename binary_t::container_type&& init)
+    {
+        auto res = basic_json();
+        res.m_data.m_type = value_t::binary;
+        res.m_data.m_value = std::move(init);
+        return res;
+    }
+
+    /// @brief explicitly create a binary array (with subtype)
+    /// @sa https://json.nlohmann.me/api/basic_json/binary/
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    static basic_json binary(typename binary_t::container_type&& init, typename binary_t::subtype_type subtype)
+    {
+        auto res = basic_json();
+        res.m_data.m_type = value_t::binary;
+        res.m_data.m_value = binary_t(std::move(init), subtype);
+        return res;
+    }
+
+    /// @brief explicitly create an array from an initializer list
+    /// @sa https://json.nlohmann.me/api/basic_json/array/
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    static basic_json array(initializer_list_t init = {})
+    {
+        return basic_json(init, false, value_t::array);
+    }
+
+    /// @brief explicitly create an object from an initializer list
+    /// @sa https://json.nlohmann.me/api/basic_json/object/
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    static basic_json object(initializer_list_t init = {})
+    {
+        return basic_json(init, false, value_t::object);
+    }
+
+    /// @brief construct an array with count copies of given value
+    /// @sa https://json.nlohmann.me/api/basic_json/basic_json/
+    basic_json(size_type cnt, const basic_json& val):
+        m_data{cnt, val}
+    {
+        set_parents();
+        assert_invariant();
+    }
+
+    /// @brief construct a JSON container given an iterator range
+    /// @sa https://json.nlohmann.me/api/basic_json/basic_json/
+    template < class InputIT, typename std::enable_if <
+                   std::is_same<InputIT, typename basic_json_t::iterator>::value ||
+                   std::is_same<InputIT, typename basic_json_t::const_iterator>::value, int >::type = 0 >
+    basic_json(InputIT first, InputIT last)
+    {
+        JSON_ASSERT(first.m_object != nullptr);
+        JSON_ASSERT(last.m_object != nullptr);
+
+        // make sure iterator fits the current value
+        if (JSON_HEDLEY_UNLIKELY(first.m_object != last.m_object))
+        {
+            JSON_THROW(invalid_iterator::create(201, "iterators are not compatible", nullptr));
+        }
+
+        // copy type from first iterator
+        m_data.m_type = first.m_object->m_data.m_type;
+
+        // check if iterator range is complete for primitive values
+        switch (m_data.m_type)
+        {
+            case value_t::boolean:
+            case value_t::number_float:
+            case value_t::number_integer:
+            case value_t::number_unsigned:
+            case value_t::string:
+            {
+                if (JSON_HEDLEY_UNLIKELY(!first.m_it.primitive_iterator.is_begin()
+                                         || !last.m_it.primitive_iterator.is_end()))
+                {
+                    JSON_THROW(invalid_iterator::create(204, "iterators out of range", first.m_object));
+                }
+                break;
+            }
+
+            case value_t::null:
+            case value_t::object:
+            case value_t::array:
+            case value_t::binary:
+            case value_t::discarded:
+            default:
+                break;
+        }
+
+        switch (m_data.m_type)
+        {
+            case value_t::number_integer:
+            {
+                m_data.m_value.number_integer = first.m_object->m_data.m_value.number_integer;
+                break;
+            }
+
+            case value_t::number_unsigned:
+            {
+                m_data.m_value.number_unsigned = first.m_object->m_data.m_value.number_unsigned;
+                break;
+            }
+
+            case value_t::number_float:
+            {
+                m_data.m_value.number_float = first.m_object->m_data.m_value.number_float;
+                break;
+            }
+
+            case value_t::boolean:
+            {
+                m_data.m_value.boolean = first.m_object->m_data.m_value.boolean;
+                break;
+            }
+
+            case value_t::string:
+            {
+                m_data.m_value = *first.m_object->m_data.m_value.string;
+                break;
+            }
+
+            case value_t::object:
+            {
+                m_data.m_value.object = create<object_t>(first.m_it.object_iterator,
+                                        last.m_it.object_iterator);
+                break;
+            }
+
+            case value_t::array:
+            {
+                m_data.m_value.array = create<array_t>(first.m_it.array_iterator,
+                                                       last.m_it.array_iterator);
+                break;
+            }
+
+            case value_t::binary:
+            {
+                m_data.m_value = *first.m_object->m_data.m_value.binary;
+                break;
+            }
+
+            case value_t::null:
+            case value_t::discarded:
+            default:
+                JSON_THROW(invalid_iterator::create(206, detail::concat("cannot construct with iterators from ", first.m_object->type_name()), first.m_object));
+        }
+
+        set_parents();
+        assert_invariant();
+    }
+
+
+    ///////////////////////////////////////
+    // other constructors and destructor //
+    ///////////////////////////////////////
+
+    template<typename JsonRef,
+             detail::enable_if_t<detail::conjunction<detail::is_json_ref<JsonRef>,
+                                 std::is_same<typename JsonRef::value_type, basic_json>>::value, int> = 0 >
+    basic_json(const JsonRef& ref) : basic_json(ref.moved_or_copied()) {}
+
+    /// @brief copy constructor
+    /// @sa https://json.nlohmann.me/api/basic_json/basic_json/
+    basic_json(const basic_json& other)
+        : json_base_class_t(other)
+    {
+        m_data.m_type = other.m_data.m_type;
+        // check of passed value is valid
+        other.assert_invariant();
+
+        switch (m_data.m_type)
+        {
+            case value_t::object:
+            {
+                m_data.m_value = *other.m_data.m_value.object;
+                break;
+            }
+
+            case value_t::array:
+            {
+                m_data.m_value = *other.m_data.m_value.array;
+                break;
+            }
+
+            case value_t::string:
+            {
+                m_data.m_value = *other.m_data.m_value.string;
+                break;
+            }
+
+            case value_t::boolean:
+            {
+                m_data.m_value = other.m_data.m_value.boolean;
+                break;
+            }
+
+            case value_t::number_integer:
+            {
+                m_data.m_value = other.m_data.m_value.number_integer;
+                break;
+            }
+
+            case value_t::number_unsigned:
+            {
+                m_data.m_value = other.m_data.m_value.number_unsigned;
+                break;
+            }
+
+            case value_t::number_float:
+            {
+                m_data.m_value = other.m_data.m_value.number_float;
+                break;
+            }
+
+            case value_t::binary:
+            {
+                m_data.m_value = *other.m_data.m_value.binary;
+                break;
+            }
+
+            case value_t::null:
+            case value_t::discarded:
+            default:
+                break;
+        }
+
+        set_parents();
+        assert_invariant();
+    }
+
+    /// @brief move constructor
+    /// @sa https://json.nlohmann.me/api/basic_json/basic_json/
+    basic_json(basic_json&& other) noexcept
+        : json_base_class_t(std::move(other)),
+          m_data(std::move(other.m_data))
+    {
+        // check that passed value is valid
+        other.assert_invariant(false); // NOLINT(bugprone-use-after-move,hicpp-invalid-access-moved)
+
+        // invalidate payload
+        other.m_data.m_type = value_t::null;
+        other.m_data.m_value = {};
+
+        set_parents();
+        assert_invariant();
+    }
+
+    /// @brief copy assignment
+    /// @sa https://json.nlohmann.me/api/basic_json/operator=/
+    basic_json& operator=(basic_json other) noexcept (
+        std::is_nothrow_move_constructible<value_t>::value&&
+        std::is_nothrow_move_assignable<value_t>::value&&
+        std::is_nothrow_move_constructible<json_value>::value&&
+        std::is_nothrow_move_assignable<json_value>::value&&
+        std::is_nothrow_move_assignable<json_base_class_t>::value
+    )
+    {
+        // check that passed value is valid
+        other.assert_invariant();
+
+        using std::swap;
+        swap(m_data.m_type, other.m_data.m_type);
+        swap(m_data.m_value, other.m_data.m_value);
+        json_base_class_t::operator=(std::move(other));
+
+        set_parents();
+        assert_invariant();
+        return *this;
+    }
+
+    /// @brief destructor
+    /// @sa https://json.nlohmann.me/api/basic_json/~basic_json/
+    ~basic_json() noexcept
+    {
+        assert_invariant(false);
+    }
+
+    /// @}
+
+  public:
+    ///////////////////////
+    // object inspection //
+    ///////////////////////
+
+    /// @name object inspection
+    /// Functions to inspect the type of a JSON value.
+    /// @{
+
+    /// @brief serialization
+    /// @sa https://json.nlohmann.me/api/basic_json/dump/
+    string_t dump(const int indent = -1,
+                  const char indent_char = ' ',
+                  const bool ensure_ascii = false,
+                  const error_handler_t error_handler = error_handler_t::strict) const
+    {
+        string_t result;
+        serializer s(detail::output_adapter<char, string_t>(result), indent_char, error_handler);
+
+        if (indent >= 0)
+        {
+            s.dump(*this, true, ensure_ascii, static_cast<unsigned int>(indent));
+        }
+        else
+        {
+            s.dump(*this, false, ensure_ascii, 0);
+        }
+
+        return result;
+    }
+
+    /// @brief return the type of the JSON value (explicit)
+    /// @sa https://json.nlohmann.me/api/basic_json/type/
+    constexpr value_t type() const noexcept
+    {
+        return m_data.m_type;
+    }
+
+    /// @brief return whether type is primitive
+    /// @sa https://json.nlohmann.me/api/basic_json/is_primitive/
+    constexpr bool is_primitive() const noexcept
+    {
+        return is_null() || is_string() || is_boolean() || is_number() || is_binary();
+    }
+
+    /// @brief return whether type is structured
+    /// @sa https://json.nlohmann.me/api/basic_json/is_structured/
+    constexpr bool is_structured() const noexcept
+    {
+        return is_array() || is_object();
+    }
+
+    /// @brief return whether value is null
+    /// @sa https://json.nlohmann.me/api/basic_json/is_null/
+    constexpr bool is_null() const noexcept
+    {
+        return m_data.m_type == value_t::null;
+    }
+
+    /// @brief return whether value is a boolean
+    /// @sa https://json.nlohmann.me/api/basic_json/is_boolean/
+    constexpr bool is_boolean() const noexcept
+    {
+        return m_data.m_type == value_t::boolean;
+    }
+
+    /// @brief return whether value is a number
+    /// @sa https://json.nlohmann.me/api/basic_json/is_number/
+    constexpr bool is_number() const noexcept
+    {
+        return is_number_integer() || is_number_float();
+    }
+
+    /// @brief return whether value is an integer number
+    /// @sa https://json.nlohmann.me/api/basic_json/is_number_integer/
+    constexpr bool is_number_integer() const noexcept
+    {
+        return m_data.m_type == value_t::number_integer || m_data.m_type == value_t::number_unsigned;
+    }
+
+    /// @brief return whether value is an unsigned integer number
+    /// @sa https://json.nlohmann.me/api/basic_json/is_number_unsigned/
+    constexpr bool is_number_unsigned() const noexcept
+    {
+        return m_data.m_type == value_t::number_unsigned;
+    }
+
+    /// @brief return whether value is a floating-point number
+    /// @sa https://json.nlohmann.me/api/basic_json/is_number_float/
+    constexpr bool is_number_float() const noexcept
+    {
+        return m_data.m_type == value_t::number_float;
+    }
+
+    /// @brief return whether value is an object
+    /// @sa https://json.nlohmann.me/api/basic_json/is_object/
+    constexpr bool is_object() const noexcept
+    {
+        return m_data.m_type == value_t::object;
+    }
+
+    /// @brief return whether value is an array
+    /// @sa https://json.nlohmann.me/api/basic_json/is_array/
+    constexpr bool is_array() const noexcept
+    {
+        return m_data.m_type == value_t::array;
+    }
+
+    /// @brief return whether value is a string
+    /// @sa https://json.nlohmann.me/api/basic_json/is_string/
+    constexpr bool is_string() const noexcept
+    {
+        return m_data.m_type == value_t::string;
+    }
+
+    /// @brief return whether value is a binary array
+    /// @sa https://json.nlohmann.me/api/basic_json/is_binary/
+    constexpr bool is_binary() const noexcept
+    {
+        return m_data.m_type == value_t::binary;
+    }
+
+    /// @brief return whether value is discarded
+    /// @sa https://json.nlohmann.me/api/basic_json/is_discarded/
+    constexpr bool is_discarded() const noexcept
+    {
+        return m_data.m_type == value_t::discarded;
+    }
+
+    /// @brief return the type of the JSON value (implicit)
+    /// @sa https://json.nlohmann.me/api/basic_json/operator_value_t/
+    constexpr operator value_t() const noexcept
+    {
+        return m_data.m_type;
+    }
+
+    /// @}
+
+  private:
+    //////////////////
+    // value access //
+    //////////////////
+
+    /// get a boolean (explicit)
+    boolean_t get_impl(boolean_t* /*unused*/) const
+    {
+        if (JSON_HEDLEY_LIKELY(is_boolean()))
+        {
+            return m_data.m_value.boolean;
+        }
+
+        JSON_THROW(type_error::create(302, detail::concat("type must be boolean, but is ", type_name()), this));
+    }
+
+    /// get a pointer to the value (object)
+    object_t* get_impl_ptr(object_t* /*unused*/) noexcept
+    {
+        return is_object() ? m_data.m_value.object : nullptr;
+    }
+
+    /// get a pointer to the value (object)
+    constexpr const object_t* get_impl_ptr(const object_t* /*unused*/) const noexcept
+    {
+        return is_object() ? m_data.m_value.object : nullptr;
+    }
+
+    /// get a pointer to the value (array)
+    array_t* get_impl_ptr(array_t* /*unused*/) noexcept
+    {
+        return is_array() ? m_data.m_value.array : nullptr;
+    }
+
+    /// get a pointer to the value (array)
+    constexpr const array_t* get_impl_ptr(const array_t* /*unused*/) const noexcept
+    {
+        return is_array() ? m_data.m_value.array : nullptr;
+    }
+
+    /// get a pointer to the value (string)
+    string_t* get_impl_ptr(string_t* /*unused*/) noexcept
+    {
+        return is_string() ? m_data.m_value.string : nullptr;
+    }
+
+    /// get a pointer to the value (string)
+    constexpr const string_t* get_impl_ptr(const string_t* /*unused*/) const noexcept
+    {
+        return is_string() ? m_data.m_value.string : nullptr;
+    }
+
+    /// get a pointer to the value (boolean)
+    boolean_t* get_impl_ptr(boolean_t* /*unused*/) noexcept
+    {
+        return is_boolean() ? &m_data.m_value.boolean : nullptr;
+    }
+
+    /// get a pointer to the value (boolean)
+    constexpr const boolean_t* get_impl_ptr(const boolean_t* /*unused*/) const noexcept
+    {
+        return is_boolean() ? &m_data.m_value.boolean : nullptr;
+    }
+
+    /// get a pointer to the value (integer number)
+    number_integer_t* get_impl_ptr(number_integer_t* /*unused*/) noexcept
+    {
+        return is_number_integer() ? &m_data.m_value.number_integer : nullptr;
+    }
+
+    /// get a pointer to the value (integer number)
+    constexpr const number_integer_t* get_impl_ptr(const number_integer_t* /*unused*/) const noexcept
+    {
+        return is_number_integer() ? &m_data.m_value.number_integer : nullptr;
+    }
+
+    /// get a pointer to the value (unsigned number)
+    number_unsigned_t* get_impl_ptr(number_unsigned_t* /*unused*/) noexcept
+    {
+        return is_number_unsigned() ? &m_data.m_value.number_unsigned : nullptr;
+    }
+
+    /// get a pointer to the value (unsigned number)
+    constexpr const number_unsigned_t* get_impl_ptr(const number_unsigned_t* /*unused*/) const noexcept
+    {
+        return is_number_unsigned() ? &m_data.m_value.number_unsigned : nullptr;
+    }
+
+    /// get a pointer to the value (floating-point number)
+    number_float_t* get_impl_ptr(number_float_t* /*unused*/) noexcept
+    {
+        return is_number_float() ? &m_data.m_value.number_float : nullptr;
+    }
+
+    /// get a pointer to the value (floating-point number)
+    constexpr const number_float_t* get_impl_ptr(const number_float_t* /*unused*/) const noexcept
+    {
+        return is_number_float() ? &m_data.m_value.number_float : nullptr;
+    }
+
+    /// get a pointer to the value (binary)
+    binary_t* get_impl_ptr(binary_t* /*unused*/) noexcept
+    {
+        return is_binary() ? m_data.m_value.binary : nullptr;
+    }
+
+    /// get a pointer to the value (binary)
+    constexpr const binary_t* get_impl_ptr(const binary_t* /*unused*/) const noexcept
+    {
+        return is_binary() ? m_data.m_value.binary : nullptr;
+    }
+
+    /*!
+    @brief helper function to implement get_ref()
+
+    This function helps to implement get_ref() without code duplication for
+    const and non-const overloads
+
+    @tparam ThisType will be deduced as `basic_json` or `const basic_json`
+
+    @throw type_error.303 if ReferenceType does not match underlying value
+    type of the current JSON
+    */
+    template<typename ReferenceType, typename ThisType>
+    static ReferenceType get_ref_impl(ThisType& obj)
+    {
+        // delegate the call to get_ptr<>()
+        auto* ptr = obj.template get_ptr<typename std::add_pointer<ReferenceType>::type>();
+
+        if (JSON_HEDLEY_LIKELY(ptr != nullptr))
+        {
+            return *ptr;
+        }
+
+        JSON_THROW(type_error::create(303, detail::concat("incompatible ReferenceType for get_ref, actual type is ", obj.type_name()), &obj));
+    }
+
+  public:
+    /// @name value access
+    /// Direct access to the stored value of a JSON value.
+    /// @{
+
+    /// @brief get a pointer value (implicit)
+    /// @sa https://json.nlohmann.me/api/basic_json/get_ptr/
+    template<typename PointerType, typename std::enable_if<
+                 std::is_pointer<PointerType>::value, int>::type = 0>
+    auto get_ptr() noexcept -> decltype(std::declval<basic_json_t&>().get_impl_ptr(std::declval<PointerType>()))
+    {
+        // delegate the call to get_impl_ptr<>()
+        return get_impl_ptr(static_cast<PointerType>(nullptr));
+    }
+
+    /// @brief get a pointer value (implicit)
+    /// @sa https://json.nlohmann.me/api/basic_json/get_ptr/
+    template < typename PointerType, typename std::enable_if <
+                   std::is_pointer<PointerType>::value&&
+                   std::is_const<typename std::remove_pointer<PointerType>::type>::value, int >::type = 0 >
+    constexpr auto get_ptr() const noexcept -> decltype(std::declval<const basic_json_t&>().get_impl_ptr(std::declval<PointerType>()))
+    {
+        // delegate the call to get_impl_ptr<>() const
+        return get_impl_ptr(static_cast<PointerType>(nullptr));
+    }
+
+  private:
+    /*!
+    @brief get a value (explicit)
+
+    Explicit type conversion between the JSON value and a compatible value
+    which is [CopyConstructible](https://en.cppreference.com/w/cpp/named_req/CopyConstructible)
+    and [DefaultConstructible](https://en.cppreference.com/w/cpp/named_req/DefaultConstructible).
+    The value is converted by calling the @ref json_serializer<ValueType>
+    `from_json()` method.
+
+    The function is equivalent to executing
+    @code {.cpp}
+    ValueType ret;
+    JSONSerializer<ValueType>::from_json(*this, ret);
+    return ret;
+    @endcode
+
+    This overloads is chosen if:
+    - @a ValueType is not @ref basic_json,
+    - @ref json_serializer<ValueType> has a `from_json()` method of the form
+      `void from_json(const basic_json&, ValueType&)`, and
+    - @ref json_serializer<ValueType> does not have a `from_json()` method of
+      the form `ValueType from_json(const basic_json&)`
+
+    @tparam ValueType the returned value type
+
+    @return copy of the JSON value, converted to @a ValueType
+
+    @throw what @ref json_serializer<ValueType> `from_json()` method throws
+
+    @liveexample{The example below shows several conversions from JSON values
+    to other types. There a few things to note: (1) Floating-point numbers can
+    be converted to integers\, (2) A JSON array can be converted to a standard
+    `std::vector<short>`\, (3) A JSON object can be converted to C++
+    associative containers such as `std::unordered_map<std::string\,
+    json>`.,get__ValueType_const}
+
+    @since version 2.1.0
+    */
+    template < typename ValueType,
+               detail::enable_if_t <
+                   detail::is_default_constructible<ValueType>::value&&
+                   detail::has_from_json<basic_json_t, ValueType>::value,
+                   int > = 0 >
+    ValueType get_impl(detail::priority_tag<0> /*unused*/) const noexcept(noexcept(
+                JSONSerializer<ValueType>::from_json(std::declval<const basic_json_t&>(), std::declval<ValueType&>())))
+    {
+        auto ret = ValueType();
+        JSONSerializer<ValueType>::from_json(*this, ret);
+        return ret;
+    }
+
+    /*!
+    @brief get a value (explicit); special case
+
+    Explicit type conversion between the JSON value and a compatible value
+    which is **not** [CopyConstructible](https://en.cppreference.com/w/cpp/named_req/CopyConstructible)
+    and **not** [DefaultConstructible](https://en.cppreference.com/w/cpp/named_req/DefaultConstructible).
+    The value is converted by calling the @ref json_serializer<ValueType>
+    `from_json()` method.
+
+    The function is equivalent to executing
+    @code {.cpp}
+    return JSONSerializer<ValueType>::from_json(*this);
+    @endcode
+
+    This overloads is chosen if:
+    - @a ValueType is not @ref basic_json and
+    - @ref json_serializer<ValueType> has a `from_json()` method of the form
+      `ValueType from_json(const basic_json&)`
+
+    @note If @ref json_serializer<ValueType> has both overloads of
+    `from_json()`, this one is chosen.
+
+    @tparam ValueType the returned value type
+
+    @return copy of the JSON value, converted to @a ValueType
+
+    @throw what @ref json_serializer<ValueType> `from_json()` method throws
+
+    @since version 2.1.0
+    */
+    template < typename ValueType,
+               detail::enable_if_t <
+                   detail::has_non_default_from_json<basic_json_t, ValueType>::value,
+                   int > = 0 >
+    ValueType get_impl(detail::priority_tag<1> /*unused*/) const noexcept(noexcept(
+                JSONSerializer<ValueType>::from_json(std::declval<const basic_json_t&>())))
+    {
+        return JSONSerializer<ValueType>::from_json(*this);
+    }
+
+    /*!
+    @brief get special-case overload
+
+    This overloads converts the current @ref basic_json in a different
+    @ref basic_json type
+
+    @tparam BasicJsonType == @ref basic_json
+
+    @return a copy of *this, converted into @a BasicJsonType
+
+    @complexity Depending on the implementation of the called `from_json()`
+                method.
+
+    @since version 3.2.0
+    */
+    template < typename BasicJsonType,
+               detail::enable_if_t <
+                   detail::is_basic_json<BasicJsonType>::value,
+                   int > = 0 >
+    BasicJsonType get_impl(detail::priority_tag<2> /*unused*/) const
+    {
+        return *this;
+    }
+
+    /*!
+    @brief get special-case overload
+
+    This overloads avoids a lot of template boilerplate, it can be seen as the
+    identity method
+
+    @tparam BasicJsonType == @ref basic_json
+
+    @return a copy of *this
+
+    @complexity Constant.
+
+    @since version 2.1.0
+    */
+    template<typename BasicJsonType,
+             detail::enable_if_t<
+                 std::is_same<BasicJsonType, basic_json_t>::value,
+                 int> = 0>
+    basic_json get_impl(detail::priority_tag<3> /*unused*/) const
+    {
+        return *this;
+    }
+
+    /*!
+    @brief get a pointer value (explicit)
+    @copydoc get()
+    */
+    template<typename PointerType,
+             detail::enable_if_t<
+                 std::is_pointer<PointerType>::value,
+                 int> = 0>
+    constexpr auto get_impl(detail::priority_tag<4> /*unused*/) const noexcept
+    -> decltype(std::declval<const basic_json_t&>().template get_ptr<PointerType>())
+    {
+        // delegate the call to get_ptr
+        return get_ptr<PointerType>();
+    }
+
+  public:
+    /*!
+    @brief get a (pointer) value (explicit)
+
+    Performs explicit type conversion between the JSON value and a compatible value if required.
+
+    - If the requested type is a pointer to the internally stored JSON value that pointer is returned.
+    No copies are made.
+
+    - If the requested type is the current @ref basic_json, or a different @ref basic_json convertible
+    from the current @ref basic_json.
+
+    - Otherwise the value is converted by calling the @ref json_serializer<ValueType> `from_json()`
+    method.
+
+    @tparam ValueTypeCV the provided value type
+    @tparam ValueType the returned value type
+
+    @return copy of the JSON value, converted to @tparam ValueType if necessary
+
+    @throw what @ref json_serializer<ValueType> `from_json()` method throws if conversion is required
+
+    @since version 2.1.0
+    */
+    template < typename ValueTypeCV, typename ValueType = detail::uncvref_t<ValueTypeCV>>
+#if defined(JSON_HAS_CPP_14)
+    constexpr
+#endif
+    auto get() const noexcept(
+    noexcept(std::declval<const basic_json_t&>().template get_impl<ValueType>(detail::priority_tag<4> {})))
+    -> decltype(std::declval<const basic_json_t&>().template get_impl<ValueType>(detail::priority_tag<4> {}))
+    {
+        // we cannot static_assert on ValueTypeCV being non-const, because
+        // there is support for get<const basic_json_t>(), which is why we
+        // still need the uncvref
+        static_assert(!std::is_reference<ValueTypeCV>::value,
+                      "get() cannot be used with reference types, you might want to use get_ref()");
+        return get_impl<ValueType>(detail::priority_tag<4> {});
+    }
+
+    /*!
+    @brief get a pointer value (explicit)
+
+    Explicit pointer access to the internally stored JSON value. No copies are
+    made.
+
+    @warning The pointer becomes invalid if the underlying JSON object
+    changes.
+
+    @tparam PointerType pointer type; must be a pointer to @ref array_t, @ref
+    object_t, @ref string_t, @ref boolean_t, @ref number_integer_t,
+    @ref number_unsigned_t, or @ref number_float_t.
+
+    @return pointer to the internally stored JSON value if the requested
+    pointer type @a PointerType fits to the JSON value; `nullptr` otherwise
+
+    @complexity Constant.
+
+    @liveexample{The example below shows how pointers to internal values of a
+    JSON value can be requested. Note that no type conversions are made and a
+    `nullptr` is returned if the value and the requested pointer type does not
+    match.,get__PointerType}
+
+    @sa see @ref get_ptr() for explicit pointer-member access
+
+    @since version 1.0.0
+    */
+    template<typename PointerType, typename std::enable_if<
+                 std::is_pointer<PointerType>::value, int>::type = 0>
+    auto get() noexcept -> decltype(std::declval<basic_json_t&>().template get_ptr<PointerType>())
+    {
+        // delegate the call to get_ptr
+        return get_ptr<PointerType>();
+    }
+
+    /// @brief get a value (explicit)
+    /// @sa https://json.nlohmann.me/api/basic_json/get_to/
+    template < typename ValueType,
+               detail::enable_if_t <
+                   !detail::is_basic_json<ValueType>::value&&
+                   detail::has_from_json<basic_json_t, ValueType>::value,
+                   int > = 0 >
+    ValueType & get_to(ValueType& v) const noexcept(noexcept(
+                JSONSerializer<ValueType>::from_json(std::declval<const basic_json_t&>(), v)))
+    {
+        JSONSerializer<ValueType>::from_json(*this, v);
+        return v;
+    }
+
+    // specialization to allow calling get_to with a basic_json value
+    // see https://github.com/nlohmann/json/issues/2175
+    template<typename ValueType,
+             detail::enable_if_t <
+                 detail::is_basic_json<ValueType>::value,
+                 int> = 0>
+    ValueType & get_to(ValueType& v) const
+    {
+        v = *this;
+        return v;
+    }
+
+    template <
+        typename T, std::size_t N,
+        typename Array = T (&)[N], // NOLINT(cppcoreguidelines-avoid-c-arrays,hicpp-avoid-c-arrays,modernize-avoid-c-arrays)
+        detail::enable_if_t <
+            detail::has_from_json<basic_json_t, Array>::value, int > = 0 >
+    Array get_to(T (&v)[N]) const // NOLINT(cppcoreguidelines-avoid-c-arrays,hicpp-avoid-c-arrays,modernize-avoid-c-arrays)
+    noexcept(noexcept(JSONSerializer<Array>::from_json(
+                          std::declval<const basic_json_t&>(), v)))
+    {
+        JSONSerializer<Array>::from_json(*this, v);
+        return v;
+    }
+
+    /// @brief get a reference value (implicit)
+    /// @sa https://json.nlohmann.me/api/basic_json/get_ref/
+    template<typename ReferenceType, typename std::enable_if<
+                 std::is_reference<ReferenceType>::value, int>::type = 0>
+    ReferenceType get_ref()
+    {
+        // delegate call to get_ref_impl
+        return get_ref_impl<ReferenceType>(*this);
+    }
+
+    /// @brief get a reference value (implicit)
+    /// @sa https://json.nlohmann.me/api/basic_json/get_ref/
+    template < typename ReferenceType, typename std::enable_if <
+                   std::is_reference<ReferenceType>::value&&
+                   std::is_const<typename std::remove_reference<ReferenceType>::type>::value, int >::type = 0 >
+    ReferenceType get_ref() const
+    {
+        // delegate call to get_ref_impl
+        return get_ref_impl<ReferenceType>(*this);
+    }
+
+    /*!
+    @brief get a value (implicit)
+
+    Implicit type conversion between the JSON value and a compatible value.
+    The call is realized by calling @ref get() const.
+
+    @tparam ValueType non-pointer type compatible to the JSON value, for
+    instance `int` for JSON integer numbers, `bool` for JSON booleans, or
+    `std::vector` types for JSON arrays. The character type of @ref string_t
+    as well as an initializer list of this type is excluded to avoid
+    ambiguities as these types implicitly convert to `std::string`.
+
+    @return copy of the JSON value, converted to type @a ValueType
+
+    @throw type_error.302 in case passed type @a ValueType is incompatible
+    to the JSON value type (e.g., the JSON value is of type boolean, but a
+    string is requested); see example below
+
+    @complexity Linear in the size of the JSON value.
+
+    @liveexample{The example below shows several conversions from JSON values
+    to other types. There a few things to note: (1) Floating-point numbers can
+    be converted to integers\, (2) A JSON array can be converted to a standard
+    `std::vector<short>`\, (3) A JSON object can be converted to C++
+    associative containers such as `std::unordered_map<std::string\,
+    json>`.,operator__ValueType}
+
+    @since version 1.0.0
+    */
+    template < typename ValueType, typename std::enable_if <
+                   detail::conjunction <
+                       detail::negation<std::is_pointer<ValueType>>,
+                       detail::negation<std::is_same<ValueType, std::nullptr_t>>,
+                       detail::negation<std::is_same<ValueType, detail::json_ref<basic_json>>>,
+                                        detail::negation<std::is_same<ValueType, typename string_t::value_type>>,
+                                        detail::negation<detail::is_basic_json<ValueType>>,
+                                        detail::negation<std::is_same<ValueType, std::initializer_list<typename string_t::value_type>>>,
+#if defined(JSON_HAS_CPP_17) && (defined(__GNUC__) || (defined(_MSC_VER) && _MSC_VER >= 1910 && _MSC_VER <= 1914))
+                                                detail::negation<std::is_same<ValueType, std::string_view>>,
+#endif
+#if defined(JSON_HAS_CPP_17)
+                                                detail::negation<std::is_same<ValueType, std::any>>,
+#endif
+                                                detail::is_detected_lazy<detail::get_template_function, const basic_json_t&, ValueType>
+                                                >::value, int >::type = 0 >
+                                        JSON_EXPLICIT operator ValueType() const
+    {
+        // delegate the call to get<>() const
+        return get<ValueType>();
+    }
+
+    /// @brief get a binary value
+    /// @sa https://json.nlohmann.me/api/basic_json/get_binary/
+    binary_t& get_binary()
+    {
+        if (!is_binary())
+        {
+            JSON_THROW(type_error::create(302, detail::concat("type must be binary, but is ", type_name()), this));
+        }
+
+        return *get_ptr<binary_t*>();
+    }
+
+    /// @brief get a binary value
+    /// @sa https://json.nlohmann.me/api/basic_json/get_binary/
+    const binary_t& get_binary() const
+    {
+        if (!is_binary())
+        {
+            JSON_THROW(type_error::create(302, detail::concat("type must be binary, but is ", type_name()), this));
+        }
+
+        return *get_ptr<const binary_t*>();
+    }
+
+    /// @}
+
+
+    ////////////////////
+    // element access //
+    ////////////////////
+
+    /// @name element access
+    /// Access to the JSON value.
+    /// @{
+
+    /// @brief access specified array element with bounds checking
+    /// @sa https://json.nlohmann.me/api/basic_json/at/
+    reference at(size_type idx)
+    {
+        // at only works for arrays
+        if (JSON_HEDLEY_LIKELY(is_array()))
+        {
+            JSON_TRY
+            {
+                return set_parent(m_data.m_value.array->at(idx));
+            }
+            JSON_CATCH (std::out_of_range&)
+            {
+                // create better exception explanation
+                JSON_THROW(out_of_range::create(401, detail::concat("array index ", std::to_string(idx), " is out of range"), this));
+            }
+        }
+        else
+        {
+            JSON_THROW(type_error::create(304, detail::concat("cannot use at() with ", type_name()), this));
+        }
+    }
+
+    /// @brief access specified array element with bounds checking
+    /// @sa https://json.nlohmann.me/api/basic_json/at/
+    const_reference at(size_type idx) const
+    {
+        // at only works for arrays
+        if (JSON_HEDLEY_LIKELY(is_array()))
+        {
+            JSON_TRY
+            {
+                return m_data.m_value.array->at(idx);
+            }
+            JSON_CATCH (std::out_of_range&)
+            {
+                // create better exception explanation
+                JSON_THROW(out_of_range::create(401, detail::concat("array index ", std::to_string(idx), " is out of range"), this));
+            }
+        }
+        else
+        {
+            JSON_THROW(type_error::create(304, detail::concat("cannot use at() with ", type_name()), this));
+        }
+    }
+
+    /// @brief access specified object element with bounds checking
+    /// @sa https://json.nlohmann.me/api/basic_json/at/
+    reference at(const typename object_t::key_type& key)
+    {
+        // at only works for objects
+        if (JSON_HEDLEY_UNLIKELY(!is_object()))
+        {
+            JSON_THROW(type_error::create(304, detail::concat("cannot use at() with ", type_name()), this));
+        }
+
+        auto it = m_data.m_value.object->find(key);
+        if (it == m_data.m_value.object->end())
+        {
+            JSON_THROW(out_of_range::create(403, detail::concat("key '", key, "' not found"), this));
+        }
+        return set_parent(it->second);
+    }
+
+    /// @brief access specified object element with bounds checking
+    /// @sa https://json.nlohmann.me/api/basic_json/at/
+    template<class KeyType, detail::enable_if_t<
+                 detail::is_usable_as_basic_json_key_type<basic_json_t, KeyType>::value, int> = 0>
+    reference at(KeyType && key)
+    {
+        // at only works for objects
+        if (JSON_HEDLEY_UNLIKELY(!is_object()))
+        {
+            JSON_THROW(type_error::create(304, detail::concat("cannot use at() with ", type_name()), this));
+        }
+
+        auto it = m_data.m_value.object->find(std::forward<KeyType>(key));
+        if (it == m_data.m_value.object->end())
+        {
+            JSON_THROW(out_of_range::create(403, detail::concat("key '", string_t(std::forward<KeyType>(key)), "' not found"), this));
+        }
+        return set_parent(it->second);
+    }
+
+    /// @brief access specified object element with bounds checking
+    /// @sa https://json.nlohmann.me/api/basic_json/at/
+    const_reference at(const typename object_t::key_type& key) const
+    {
+        // at only works for objects
+        if (JSON_HEDLEY_UNLIKELY(!is_object()))
+        {
+            JSON_THROW(type_error::create(304, detail::concat("cannot use at() with ", type_name()), this));
+        }
+
+        auto it = m_data.m_value.object->find(key);
+        if (it == m_data.m_value.object->end())
+        {
+            JSON_THROW(out_of_range::create(403, detail::concat("key '", key, "' not found"), this));
+        }
+        return it->second;
+    }
+
+    /// @brief access specified object element with bounds checking
+    /// @sa https://json.nlohmann.me/api/basic_json/at/
+    template<class KeyType, detail::enable_if_t<
+                 detail::is_usable_as_basic_json_key_type<basic_json_t, KeyType>::value, int> = 0>
+    const_reference at(KeyType && key) const
+    {
+        // at only works for objects
+        if (JSON_HEDLEY_UNLIKELY(!is_object()))
+        {
+            JSON_THROW(type_error::create(304, detail::concat("cannot use at() with ", type_name()), this));
+        }
+
+        auto it = m_data.m_value.object->find(std::forward<KeyType>(key));
+        if (it == m_data.m_value.object->end())
+        {
+            JSON_THROW(out_of_range::create(403, detail::concat("key '", string_t(std::forward<KeyType>(key)), "' not found"), this));
+        }
+        return it->second;
+    }
+
+    /// @brief access specified array element
+    /// @sa https://json.nlohmann.me/api/basic_json/operator%5B%5D/
+    reference operator[](size_type idx)
+    {
+        // implicitly convert null value to an empty array
+        if (is_null())
+        {
+            m_data.m_type = value_t::array;
+            m_data.m_value.array = create<array_t>();
+            assert_invariant();
+        }
+
+        // operator[] only works for arrays
+        if (JSON_HEDLEY_LIKELY(is_array()))
+        {
+            // fill up array with null values if given idx is outside range
+            if (idx >= m_data.m_value.array->size())
+            {
+#if JSON_DIAGNOSTICS
+                // remember array size & capacity before resizing
+                const auto old_size = m_data.m_value.array->size();
+                const auto old_capacity = m_data.m_value.array->capacity();
+#endif
+                m_data.m_value.array->resize(idx + 1);
+
+#if JSON_DIAGNOSTICS
+                if (JSON_HEDLEY_UNLIKELY(m_data.m_value.array->capacity() != old_capacity))
+                {
+                    // capacity has changed: update all parents
+                    set_parents();
+                }
+                else
+                {
+                    // set parent for values added above
+                    set_parents(begin() + static_cast<typename iterator::difference_type>(old_size), static_cast<typename iterator::difference_type>(idx + 1 - old_size));
+                }
+#endif
+                assert_invariant();
+            }
+
+            return m_data.m_value.array->operator[](idx);
+        }
+
+        JSON_THROW(type_error::create(305, detail::concat("cannot use operator[] with a numeric argument with ", type_name()), this));
+    }
+
+    /// @brief access specified array element
+    /// @sa https://json.nlohmann.me/api/basic_json/operator%5B%5D/
+    const_reference operator[](size_type idx) const
+    {
+        // const operator[] only works for arrays
+        if (JSON_HEDLEY_LIKELY(is_array()))
+        {
+            return m_data.m_value.array->operator[](idx);
+        }
+
+        JSON_THROW(type_error::create(305, detail::concat("cannot use operator[] with a numeric argument with ", type_name()), this));
+    }
+
+    /// @brief access specified object element
+    /// @sa https://json.nlohmann.me/api/basic_json/operator%5B%5D/
+    reference operator[](typename object_t::key_type key)
+    {
+        // implicitly convert null value to an empty object
+        if (is_null())
+        {
+            m_data.m_type = value_t::object;
+            m_data.m_value.object = create<object_t>();
+            assert_invariant();
+        }
+
+        // operator[] only works for objects
+        if (JSON_HEDLEY_LIKELY(is_object()))
+        {
+            auto result = m_data.m_value.object->emplace(std::move(key), nullptr);
+            return set_parent(result.first->second);
+        }
+
+        JSON_THROW(type_error::create(305, detail::concat("cannot use operator[] with a string argument with ", type_name()), this));
+    }
+
+    /// @brief access specified object element
+    /// @sa https://json.nlohmann.me/api/basic_json/operator%5B%5D/
+    const_reference operator[](const typename object_t::key_type& key) const
+    {
+        // const operator[] only works for objects
+        if (JSON_HEDLEY_LIKELY(is_object()))
+        {
+            auto it = m_data.m_value.object->find(key);
+            JSON_ASSERT(it != m_data.m_value.object->end());
+            return it->second;
+        }
+
+        JSON_THROW(type_error::create(305, detail::concat("cannot use operator[] with a string argument with ", type_name()), this));
+    }
+
+    // these two functions resolve a (const) char * ambiguity affecting Clang and MSVC
+    // (they seemingly cannot be constrained to resolve the ambiguity)
+    template<typename T>
+    reference operator[](T* key)
+    {
+        return operator[](typename object_t::key_type(key));
+    }
+
+    template<typename T>
+    const_reference operator[](T* key) const
+    {
+        return operator[](typename object_t::key_type(key));
+    }
+
+    /// @brief access specified object element
+    /// @sa https://json.nlohmann.me/api/basic_json/operator%5B%5D/
+    template<class KeyType, detail::enable_if_t<
+                 detail::is_usable_as_basic_json_key_type<basic_json_t, KeyType>::value, int > = 0 >
+    reference operator[](KeyType && key)
+    {
+        // implicitly convert null value to an empty object
+        if (is_null())
+        {
+            m_data.m_type = value_t::object;
+            m_data.m_value.object = create<object_t>();
+            assert_invariant();
+        }
+
+        // operator[] only works for objects
+        if (JSON_HEDLEY_LIKELY(is_object()))
+        {
+            auto result = m_data.m_value.object->emplace(std::forward<KeyType>(key), nullptr);
+            return set_parent(result.first->second);
+        }
+
+        JSON_THROW(type_error::create(305, detail::concat("cannot use operator[] with a string argument with ", type_name()), this));
+    }
+
+    /// @brief access specified object element
+    /// @sa https://json.nlohmann.me/api/basic_json/operator%5B%5D/
+    template<class KeyType, detail::enable_if_t<
+                 detail::is_usable_as_basic_json_key_type<basic_json_t, KeyType>::value, int > = 0 >
+    const_reference operator[](KeyType && key) const
+    {
+        // const operator[] only works for objects
+        if (JSON_HEDLEY_LIKELY(is_object()))
+        {
+            auto it = m_data.m_value.object->find(std::forward<KeyType>(key));
+            JSON_ASSERT(it != m_data.m_value.object->end());
+            return it->second;
+        }
+
+        JSON_THROW(type_error::create(305, detail::concat("cannot use operator[] with a string argument with ", type_name()), this));
+    }
+
+  private:
+    template<typename KeyType>
+    using is_comparable_with_object_key = detail::is_comparable <
+        object_comparator_t, const typename object_t::key_type&, KeyType >;
+
+    template<typename ValueType>
+    using value_return_type = std::conditional <
+        detail::is_c_string_uncvref<ValueType>::value,
+        string_t, typename std::decay<ValueType>::type >;
+
+  public:
+    /// @brief access specified object element with default value
+    /// @sa https://json.nlohmann.me/api/basic_json/value/
+    template < class ValueType, detail::enable_if_t <
+                   !detail::is_transparent<object_comparator_t>::value
+                   && detail::is_getable<basic_json_t, ValueType>::value
+                   && !std::is_same<value_t, detail::uncvref_t<ValueType>>::value, int > = 0 >
+    ValueType value(const typename object_t::key_type& key, const ValueType& default_value) const
+    {
+        // value only works for objects
+        if (JSON_HEDLEY_LIKELY(is_object()))
+        {
+            // if key is found, return value and given default value otherwise
+            const auto it = find(key);
+            if (it != end())
+            {
+                return it->template get<ValueType>();
+            }
+
+            return default_value;
+        }
+
+        JSON_THROW(type_error::create(306, detail::concat("cannot use value() with ", type_name()), this));
+    }
+
+    /// @brief access specified object element with default value
+    /// @sa https://json.nlohmann.me/api/basic_json/value/
+    template < class ValueType, class ReturnType = typename value_return_type<ValueType>::type,
+               detail::enable_if_t <
+                   !detail::is_transparent<object_comparator_t>::value
+                   && detail::is_getable<basic_json_t, ReturnType>::value
+                   && !std::is_same<value_t, detail::uncvref_t<ValueType>>::value, int > = 0 >
+    ReturnType value(const typename object_t::key_type& key, ValueType && default_value) const
+    {
+        // value only works for objects
+        if (JSON_HEDLEY_LIKELY(is_object()))
+        {
+            // if key is found, return value and given default value otherwise
+            const auto it = find(key);
+            if (it != end())
+            {
+                return it->template get<ReturnType>();
+            }
+
+            return std::forward<ValueType>(default_value);
+        }
+
+        JSON_THROW(type_error::create(306, detail::concat("cannot use value() with ", type_name()), this));
+    }
+
+    /// @brief access specified object element with default value
+    /// @sa https://json.nlohmann.me/api/basic_json/value/
+    template < class ValueType, class KeyType, detail::enable_if_t <
+                   detail::is_transparent<object_comparator_t>::value
+                   && !detail::is_json_pointer<KeyType>::value
+                   && is_comparable_with_object_key<KeyType>::value
+                   && detail::is_getable<basic_json_t, ValueType>::value
+                   && !std::is_same<value_t, detail::uncvref_t<ValueType>>::value, int > = 0 >
+    ValueType value(KeyType && key, const ValueType& default_value) const
+    {
+        // value only works for objects
+        if (JSON_HEDLEY_LIKELY(is_object()))
+        {
+            // if key is found, return value and given default value otherwise
+            const auto it = find(std::forward<KeyType>(key));
+            if (it != end())
+            {
+                return it->template get<ValueType>();
+            }
+
+            return default_value;
+        }
+
+        JSON_THROW(type_error::create(306, detail::concat("cannot use value() with ", type_name()), this));
+    }
+
+    /// @brief access specified object element via JSON Pointer with default value
+    /// @sa https://json.nlohmann.me/api/basic_json/value/
+    template < class ValueType, class KeyType, class ReturnType = typename value_return_type<ValueType>::type,
+               detail::enable_if_t <
+                   detail::is_transparent<object_comparator_t>::value
+                   && !detail::is_json_pointer<KeyType>::value
+                   && is_comparable_with_object_key<KeyType>::value
+                   && detail::is_getable<basic_json_t, ReturnType>::value
+                   && !std::is_same<value_t, detail::uncvref_t<ValueType>>::value, int > = 0 >
+    ReturnType value(KeyType && key, ValueType && default_value) const
+    {
+        // value only works for objects
+        if (JSON_HEDLEY_LIKELY(is_object()))
+        {
+            // if key is found, return value and given default value otherwise
+            const auto it = find(std::forward<KeyType>(key));
+            if (it != end())
+            {
+                return it->template get<ReturnType>();
+            }
+
+            return std::forward<ValueType>(default_value);
+        }
+
+        JSON_THROW(type_error::create(306, detail::concat("cannot use value() with ", type_name()), this));
+    }
+
+    /// @brief access specified object element via JSON Pointer with default value
+    /// @sa https://json.nlohmann.me/api/basic_json/value/
+    template < class ValueType, detail::enable_if_t <
+                   detail::is_getable<basic_json_t, ValueType>::value
+                   && !std::is_same<value_t, detail::uncvref_t<ValueType>>::value, int > = 0 >
+    ValueType value(const json_pointer& ptr, const ValueType& default_value) const
+    {
+        // value only works for objects
+        if (JSON_HEDLEY_LIKELY(is_object()))
+        {
+            // if pointer resolves a value, return it or use default value
+            JSON_TRY
+            {
+                return ptr.get_checked(this).template get<ValueType>();
+            }
+            JSON_INTERNAL_CATCH (out_of_range&)
+            {
+                return default_value;
+            }
+        }
+
+        JSON_THROW(type_error::create(306, detail::concat("cannot use value() with ", type_name()), this));
+    }
+
+    /// @brief access specified object element via JSON Pointer with default value
+    /// @sa https://json.nlohmann.me/api/basic_json/value/
+    template < class ValueType, class ReturnType = typename value_return_type<ValueType>::type,
+               detail::enable_if_t <
+                   detail::is_getable<basic_json_t, ReturnType>::value
+                   && !std::is_same<value_t, detail::uncvref_t<ValueType>>::value, int > = 0 >
+    ReturnType value(const json_pointer& ptr, ValueType && default_value) const
+    {
+        // value only works for objects
+        if (JSON_HEDLEY_LIKELY(is_object()))
+        {
+            // if pointer resolves a value, return it or use default value
+            JSON_TRY
+            {
+                return ptr.get_checked(this).template get<ReturnType>();
+            }
+            JSON_INTERNAL_CATCH (out_of_range&)
+            {
+                return std::forward<ValueType>(default_value);
+            }
+        }
+
+        JSON_THROW(type_error::create(306, detail::concat("cannot use value() with ", type_name()), this));
+    }
+
+    template < class ValueType, class BasicJsonType, detail::enable_if_t <
+                   detail::is_basic_json<BasicJsonType>::value
+                   && detail::is_getable<basic_json_t, ValueType>::value
+                   && !std::is_same<value_t, detail::uncvref_t<ValueType>>::value, int > = 0 >
+    JSON_HEDLEY_DEPRECATED_FOR(3.11.0, basic_json::json_pointer or nlohmann::json_pointer<basic_json::string_t>) // NOLINT(readability/alt_tokens)
+    ValueType value(const ::nlohmann::json_pointer<BasicJsonType>& ptr, const ValueType& default_value) const
+    {
+        return value(ptr.convert(), default_value);
+    }
+
+    template < class ValueType, class BasicJsonType, class ReturnType = typename value_return_type<ValueType>::type,
+               detail::enable_if_t <
+                   detail::is_basic_json<BasicJsonType>::value
+                   && detail::is_getable<basic_json_t, ReturnType>::value
+                   && !std::is_same<value_t, detail::uncvref_t<ValueType>>::value, int > = 0 >
+    JSON_HEDLEY_DEPRECATED_FOR(3.11.0, basic_json::json_pointer or nlohmann::json_pointer<basic_json::string_t>) // NOLINT(readability/alt_tokens)
+    ReturnType value(const ::nlohmann::json_pointer<BasicJsonType>& ptr, ValueType && default_value) const
+    {
+        return value(ptr.convert(), std::forward<ValueType>(default_value));
+    }
+
+    /// @brief access the first element
+    /// @sa https://json.nlohmann.me/api/basic_json/front/
+    reference front()
+    {
+        return *begin();
+    }
+
+    /// @brief access the first element
+    /// @sa https://json.nlohmann.me/api/basic_json/front/
+    const_reference front() const
+    {
+        return *cbegin();
+    }
+
+    /// @brief access the last element
+    /// @sa https://json.nlohmann.me/api/basic_json/back/
+    reference back()
+    {
+        auto tmp = end();
+        --tmp;
+        return *tmp;
+    }
+
+    /// @brief access the last element
+    /// @sa https://json.nlohmann.me/api/basic_json/back/
+    const_reference back() const
+    {
+        auto tmp = cend();
+        --tmp;
+        return *tmp;
+    }
+
+    /// @brief remove element given an iterator
+    /// @sa https://json.nlohmann.me/api/basic_json/erase/
+    template < class IteratorType, detail::enable_if_t <
+                   std::is_same<IteratorType, typename basic_json_t::iterator>::value ||
+                   std::is_same<IteratorType, typename basic_json_t::const_iterator>::value, int > = 0 >
+    IteratorType erase(IteratorType pos)
+    {
+        // make sure iterator fits the current value
+        if (JSON_HEDLEY_UNLIKELY(this != pos.m_object))
+        {
+            JSON_THROW(invalid_iterator::create(202, "iterator does not fit current value", this));
+        }
+
+        IteratorType result = end();
+
+        switch (m_data.m_type)
+        {
+            case value_t::boolean:
+            case value_t::number_float:
+            case value_t::number_integer:
+            case value_t::number_unsigned:
+            case value_t::string:
+            case value_t::binary:
+            {
+                if (JSON_HEDLEY_UNLIKELY(!pos.m_it.primitive_iterator.is_begin()))
+                {
+                    JSON_THROW(invalid_iterator::create(205, "iterator out of range", this));
+                }
+
+                if (is_string())
+                {
+                    AllocatorType<string_t> alloc;
+                    std::allocator_traits<decltype(alloc)>::destroy(alloc, m_data.m_value.string);
+                    std::allocator_traits<decltype(alloc)>::deallocate(alloc, m_data.m_value.string, 1);
+                    m_data.m_value.string = nullptr;
+                }
+                else if (is_binary())
+                {
+                    AllocatorType<binary_t> alloc;
+                    std::allocator_traits<decltype(alloc)>::destroy(alloc, m_data.m_value.binary);
+                    std::allocator_traits<decltype(alloc)>::deallocate(alloc, m_data.m_value.binary, 1);
+                    m_data.m_value.binary = nullptr;
+                }
+
+                m_data.m_type = value_t::null;
+                assert_invariant();
+                break;
+            }
+
+            case value_t::object:
+            {
+                result.m_it.object_iterator = m_data.m_value.object->erase(pos.m_it.object_iterator);
+                break;
+            }
+
+            case value_t::array:
+            {
+                result.m_it.array_iterator = m_data.m_value.array->erase(pos.m_it.array_iterator);
+                break;
+            }
+
+            case value_t::null:
+            case value_t::discarded:
+            default:
+                JSON_THROW(type_error::create(307, detail::concat("cannot use erase() with ", type_name()), this));
+        }
+
+        return result;
+    }
+
+    /// @brief remove elements given an iterator range
+    /// @sa https://json.nlohmann.me/api/basic_json/erase/
+    template < class IteratorType, detail::enable_if_t <
+                   std::is_same<IteratorType, typename basic_json_t::iterator>::value ||
+                   std::is_same<IteratorType, typename basic_json_t::const_iterator>::value, int > = 0 >
+    IteratorType erase(IteratorType first, IteratorType last)
+    {
+        // make sure iterator fits the current value
+        if (JSON_HEDLEY_UNLIKELY(this != first.m_object || this != last.m_object))
+        {
+            JSON_THROW(invalid_iterator::create(203, "iterators do not fit current value", this));
+        }
+
+        IteratorType result = end();
+
+        switch (m_data.m_type)
+        {
+            case value_t::boolean:
+            case value_t::number_float:
+            case value_t::number_integer:
+            case value_t::number_unsigned:
+            case value_t::string:
+            case value_t::binary:
+            {
+                if (JSON_HEDLEY_LIKELY(!first.m_it.primitive_iterator.is_begin()
+                                       || !last.m_it.primitive_iterator.is_end()))
+                {
+                    JSON_THROW(invalid_iterator::create(204, "iterators out of range", this));
+                }
+
+                if (is_string())
+                {
+                    AllocatorType<string_t> alloc;
+                    std::allocator_traits<decltype(alloc)>::destroy(alloc, m_data.m_value.string);
+                    std::allocator_traits<decltype(alloc)>::deallocate(alloc, m_data.m_value.string, 1);
+                    m_data.m_value.string = nullptr;
+                }
+                else if (is_binary())
+                {
+                    AllocatorType<binary_t> alloc;
+                    std::allocator_traits<decltype(alloc)>::destroy(alloc, m_data.m_value.binary);
+                    std::allocator_traits<decltype(alloc)>::deallocate(alloc, m_data.m_value.binary, 1);
+                    m_data.m_value.binary = nullptr;
+                }
+
+                m_data.m_type = value_t::null;
+                assert_invariant();
+                break;
+            }
+
+            case value_t::object:
+            {
+                result.m_it.object_iterator = m_data.m_value.object->erase(first.m_it.object_iterator,
+                                              last.m_it.object_iterator);
+                break;
+            }
+
+            case value_t::array:
+            {
+                result.m_it.array_iterator = m_data.m_value.array->erase(first.m_it.array_iterator,
+                                             last.m_it.array_iterator);
+                break;
+            }
+
+            case value_t::null:
+            case value_t::discarded:
+            default:
+                JSON_THROW(type_error::create(307, detail::concat("cannot use erase() with ", type_name()), this));
+        }
+
+        return result;
+    }
+
+  private:
+    template < typename KeyType, detail::enable_if_t <
+                   detail::has_erase_with_key_type<basic_json_t, KeyType>::value, int > = 0 >
+    size_type erase_internal(KeyType && key)
+    {
+        // this erase only works for objects
+        if (JSON_HEDLEY_UNLIKELY(!is_object()))
+        {
+            JSON_THROW(type_error::create(307, detail::concat("cannot use erase() with ", type_name()), this));
+        }
+
+        return m_data.m_value.object->erase(std::forward<KeyType>(key));
+    }
+
+    template < typename KeyType, detail::enable_if_t <
+                   !detail::has_erase_with_key_type<basic_json_t, KeyType>::value, int > = 0 >
+    size_type erase_internal(KeyType && key)
+    {
+        // this erase only works for objects
+        if (JSON_HEDLEY_UNLIKELY(!is_object()))
+        {
+            JSON_THROW(type_error::create(307, detail::concat("cannot use erase() with ", type_name()), this));
+        }
+
+        const auto it = m_data.m_value.object->find(std::forward<KeyType>(key));
+        if (it != m_data.m_value.object->end())
+        {
+            m_data.m_value.object->erase(it);
+            return 1;
+        }
+        return 0;
+    }
+
+  public:
+
+    /// @brief remove element from a JSON object given a key
+    /// @sa https://json.nlohmann.me/api/basic_json/erase/
+    size_type erase(const typename object_t::key_type& key)
+    {
+        // the indirection via erase_internal() is added to avoid making this
+        // function a template and thus de-rank it during overload resolution
+        return erase_internal(key);
+    }
+
+    /// @brief remove element from a JSON object given a key
+    /// @sa https://json.nlohmann.me/api/basic_json/erase/
+    template<class KeyType, detail::enable_if_t<
+                 detail::is_usable_as_basic_json_key_type<basic_json_t, KeyType>::value, int> = 0>
+    size_type erase(KeyType && key)
+    {
+        return erase_internal(std::forward<KeyType>(key));
+    }
+
+    /// @brief remove element from a JSON array given an index
+    /// @sa https://json.nlohmann.me/api/basic_json/erase/
+    void erase(const size_type idx)
+    {
+        // this erase only works for arrays
+        if (JSON_HEDLEY_LIKELY(is_array()))
+        {
+            if (JSON_HEDLEY_UNLIKELY(idx >= size()))
+            {
+                JSON_THROW(out_of_range::create(401, detail::concat("array index ", std::to_string(idx), " is out of range"), this));
+            }
+
+            m_data.m_value.array->erase(m_data.m_value.array->begin() + static_cast<difference_type>(idx));
+        }
+        else
+        {
+            JSON_THROW(type_error::create(307, detail::concat("cannot use erase() with ", type_name()), this));
+        }
+    }
+
+    /// @}
+
+
+    ////////////
+    // lookup //
+    ////////////
+
+    /// @name lookup
+    /// @{
+
+    /// @brief find an element in a JSON object
+    /// @sa https://json.nlohmann.me/api/basic_json/find/
+    iterator find(const typename object_t::key_type& key)
+    {
+        auto result = end();
+
+        if (is_object())
+        {
+            result.m_it.object_iterator = m_data.m_value.object->find(key);
+        }
+
+        return result;
+    }
+
+    /// @brief find an element in a JSON object
+    /// @sa https://json.nlohmann.me/api/basic_json/find/
+    const_iterator find(const typename object_t::key_type& key) const
+    {
+        auto result = cend();
+
+        if (is_object())
+        {
+            result.m_it.object_iterator = m_data.m_value.object->find(key);
+        }
+
+        return result;
+    }
+
+    /// @brief find an element in a JSON object
+    /// @sa https://json.nlohmann.me/api/basic_json/find/
+    template<class KeyType, detail::enable_if_t<
+                 detail::is_usable_as_basic_json_key_type<basic_json_t, KeyType>::value, int> = 0>
+    iterator find(KeyType && key)
+    {
+        auto result = end();
+
+        if (is_object())
+        {
+            result.m_it.object_iterator = m_data.m_value.object->find(std::forward<KeyType>(key));
+        }
+
+        return result;
+    }
+
+    /// @brief find an element in a JSON object
+    /// @sa https://json.nlohmann.me/api/basic_json/find/
+    template<class KeyType, detail::enable_if_t<
+                 detail::is_usable_as_basic_json_key_type<basic_json_t, KeyType>::value, int> = 0>
+    const_iterator find(KeyType && key) const
+    {
+        auto result = cend();
+
+        if (is_object())
+        {
+            result.m_it.object_iterator = m_data.m_value.object->find(std::forward<KeyType>(key));
+        }
+
+        return result;
+    }
+
+    /// @brief returns the number of occurrences of a key in a JSON object
+    /// @sa https://json.nlohmann.me/api/basic_json/count/
+    size_type count(const typename object_t::key_type& key) const
+    {
+        // return 0 for all nonobject types
+        return is_object() ? m_data.m_value.object->count(key) : 0;
+    }
+
+    /// @brief returns the number of occurrences of a key in a JSON object
+    /// @sa https://json.nlohmann.me/api/basic_json/count/
+    template<class KeyType, detail::enable_if_t<
+                 detail::is_usable_as_basic_json_key_type<basic_json_t, KeyType>::value, int> = 0>
+    size_type count(KeyType && key) const
+    {
+        // return 0 for all nonobject types
+        return is_object() ? m_data.m_value.object->count(std::forward<KeyType>(key)) : 0;
+    }
+
+    /// @brief check the existence of an element in a JSON object
+    /// @sa https://json.nlohmann.me/api/basic_json/contains/
+    bool contains(const typename object_t::key_type& key) const
+    {
+        return is_object() && m_data.m_value.object->find(key) != m_data.m_value.object->end();
+    }
+
+    /// @brief check the existence of an element in a JSON object
+    /// @sa https://json.nlohmann.me/api/basic_json/contains/
+    template<class KeyType, detail::enable_if_t<
+                 detail::is_usable_as_basic_json_key_type<basic_json_t, KeyType>::value, int> = 0>
+    bool contains(KeyType && key) const
+    {
+        return is_object() && m_data.m_value.object->find(std::forward<KeyType>(key)) != m_data.m_value.object->end();
+    }
+
+    /// @brief check the existence of an element in a JSON object given a JSON pointer
+    /// @sa https://json.nlohmann.me/api/basic_json/contains/
+    bool contains(const json_pointer& ptr) const
+    {
+        return ptr.contains(this);
+    }
+
+    template<typename BasicJsonType, detail::enable_if_t<detail::is_basic_json<BasicJsonType>::value, int> = 0>
+    JSON_HEDLEY_DEPRECATED_FOR(3.11.0, basic_json::json_pointer or nlohmann::json_pointer<basic_json::string_t>) // NOLINT(readability/alt_tokens)
+    bool contains(const typename ::nlohmann::json_pointer<BasicJsonType>& ptr) const
+    {
+        return ptr.contains(this);
+    }
+
+    /// @}
+
+
+    ///////////////
+    // iterators //
+    ///////////////
+
+    /// @name iterators
+    /// @{
+
+    /// @brief returns an iterator to the first element
+    /// @sa https://json.nlohmann.me/api/basic_json/begin/
+    iterator begin() noexcept
+    {
+        iterator result(this);
+        result.set_begin();
+        return result;
+    }
+
+    /// @brief returns an iterator to the first element
+    /// @sa https://json.nlohmann.me/api/basic_json/begin/
+    const_iterator begin() const noexcept
+    {
+        return cbegin();
+    }
+
+    /// @brief returns a const iterator to the first element
+    /// @sa https://json.nlohmann.me/api/basic_json/cbegin/
+    const_iterator cbegin() const noexcept
+    {
+        const_iterator result(this);
+        result.set_begin();
+        return result;
+    }
+
+    /// @brief returns an iterator to one past the last element
+    /// @sa https://json.nlohmann.me/api/basic_json/end/
+    iterator end() noexcept
+    {
+        iterator result(this);
+        result.set_end();
+        return result;
+    }
+
+    /// @brief returns an iterator to one past the last element
+    /// @sa https://json.nlohmann.me/api/basic_json/end/
+    const_iterator end() const noexcept
+    {
+        return cend();
+    }
+
+    /// @brief returns an iterator to one past the last element
+    /// @sa https://json.nlohmann.me/api/basic_json/cend/
+    const_iterator cend() const noexcept
+    {
+        const_iterator result(this);
+        result.set_end();
+        return result;
+    }
+
+    /// @brief returns an iterator to the reverse-beginning
+    /// @sa https://json.nlohmann.me/api/basic_json/rbegin/
+    reverse_iterator rbegin() noexcept
+    {
+        return reverse_iterator(end());
+    }
+
+    /// @brief returns an iterator to the reverse-beginning
+    /// @sa https://json.nlohmann.me/api/basic_json/rbegin/
+    const_reverse_iterator rbegin() const noexcept
+    {
+        return crbegin();
+    }
+
+    /// @brief returns an iterator to the reverse-end
+    /// @sa https://json.nlohmann.me/api/basic_json/rend/
+    reverse_iterator rend() noexcept
+    {
+        return reverse_iterator(begin());
+    }
+
+    /// @brief returns an iterator to the reverse-end
+    /// @sa https://json.nlohmann.me/api/basic_json/rend/
+    const_reverse_iterator rend() const noexcept
+    {
+        return crend();
+    }
+
+    /// @brief returns a const reverse iterator to the last element
+    /// @sa https://json.nlohmann.me/api/basic_json/crbegin/
+    const_reverse_iterator crbegin() const noexcept
+    {
+        return const_reverse_iterator(cend());
+    }
+
+    /// @brief returns a const reverse iterator to one before the first
+    /// @sa https://json.nlohmann.me/api/basic_json/crend/
+    const_reverse_iterator crend() const noexcept
+    {
+        return const_reverse_iterator(cbegin());
+    }
+
+  public:
+    /// @brief wrapper to access iterator member functions in range-based for
+    /// @sa https://json.nlohmann.me/api/basic_json/items/
+    /// @deprecated This function is deprecated since 3.1.0 and will be removed in
+    ///             version 4.0.0 of the library. Please use @ref items() instead;
+    ///             that is, replace `json::iterator_wrapper(j)` with `j.items()`.
+    JSON_HEDLEY_DEPRECATED_FOR(3.1.0, items())
+    static iteration_proxy<iterator> iterator_wrapper(reference ref) noexcept
+    {
+        return ref.items();
+    }
+
+    /// @brief wrapper to access iterator member functions in range-based for
+    /// @sa https://json.nlohmann.me/api/basic_json/items/
+    /// @deprecated This function is deprecated since 3.1.0 and will be removed in
+    ///         version 4.0.0 of the library. Please use @ref items() instead;
+    ///         that is, replace `json::iterator_wrapper(j)` with `j.items()`.
+    JSON_HEDLEY_DEPRECATED_FOR(3.1.0, items())
+    static iteration_proxy<const_iterator> iterator_wrapper(const_reference ref) noexcept
+    {
+        return ref.items();
+    }
+
+    /// @brief helper to access iterator member functions in range-based for
+    /// @sa https://json.nlohmann.me/api/basic_json/items/
+    iteration_proxy<iterator> items() noexcept
+    {
+        return iteration_proxy<iterator>(*this);
+    }
+
+    /// @brief helper to access iterator member functions in range-based for
+    /// @sa https://json.nlohmann.me/api/basic_json/items/
+    iteration_proxy<const_iterator> items() const noexcept
+    {
+        return iteration_proxy<const_iterator>(*this);
+    }
+
+    /// @}
+
+
+    //////////////
+    // capacity //
+    //////////////
+
+    /// @name capacity
+    /// @{
+
+    /// @brief checks whether the container is empty.
+    /// @sa https://json.nlohmann.me/api/basic_json/empty/
+    bool empty() const noexcept
+    {
+        switch (m_data.m_type)
+        {
+            case value_t::null:
+            {
+                // null values are empty
+                return true;
+            }
+
+            case value_t::array:
+            {
+                // delegate call to array_t::empty()
+                return m_data.m_value.array->empty();
+            }
+
+            case value_t::object:
+            {
+                // delegate call to object_t::empty()
+                return m_data.m_value.object->empty();
+            }
+
+            case value_t::string:
+            case value_t::boolean:
+            case value_t::number_integer:
+            case value_t::number_unsigned:
+            case value_t::number_float:
+            case value_t::binary:
+            case value_t::discarded:
+            default:
+            {
+                // all other types are nonempty
+                return false;
+            }
+        }
+    }
+
+    /// @brief returns the number of elements
+    /// @sa https://json.nlohmann.me/api/basic_json/size/
+    size_type size() const noexcept
+    {
+        switch (m_data.m_type)
+        {
+            case value_t::null:
+            {
+                // null values are empty
+                return 0;
+            }
+
+            case value_t::array:
+            {
+                // delegate call to array_t::size()
+                return m_data.m_value.array->size();
+            }
+
+            case value_t::object:
+            {
+                // delegate call to object_t::size()
+                return m_data.m_value.object->size();
+            }
+
+            case value_t::string:
+            case value_t::boolean:
+            case value_t::number_integer:
+            case value_t::number_unsigned:
+            case value_t::number_float:
+            case value_t::binary:
+            case value_t::discarded:
+            default:
+            {
+                // all other types have size 1
+                return 1;
+            }
+        }
+    }
+
+    /// @brief returns the maximum possible number of elements
+    /// @sa https://json.nlohmann.me/api/basic_json/max_size/
+    size_type max_size() const noexcept
+    {
+        switch (m_data.m_type)
+        {
+            case value_t::array:
+            {
+                // delegate call to array_t::max_size()
+                return m_data.m_value.array->max_size();
+            }
+
+            case value_t::object:
+            {
+                // delegate call to object_t::max_size()
+                return m_data.m_value.object->max_size();
+            }
+
+            case value_t::null:
+            case value_t::string:
+            case value_t::boolean:
+            case value_t::number_integer:
+            case value_t::number_unsigned:
+            case value_t::number_float:
+            case value_t::binary:
+            case value_t::discarded:
+            default:
+            {
+                // all other types have max_size() == size()
+                return size();
+            }
+        }
+    }
+
+    /// @}
+
+
+    ///////////////
+    // modifiers //
+    ///////////////
+
+    /// @name modifiers
+    /// @{
+
+    /// @brief clears the contents
+    /// @sa https://json.nlohmann.me/api/basic_json/clear/
+    void clear() noexcept
+    {
+        switch (m_data.m_type)
+        {
+            case value_t::number_integer:
+            {
+                m_data.m_value.number_integer = 0;
+                break;
+            }
+
+            case value_t::number_unsigned:
+            {
+                m_data.m_value.number_unsigned = 0;
+                break;
+            }
+
+            case value_t::number_float:
+            {
+                m_data.m_value.number_float = 0.0;
+                break;
+            }
+
+            case value_t::boolean:
+            {
+                m_data.m_value.boolean = false;
+                break;
+            }
+
+            case value_t::string:
+            {
+                m_data.m_value.string->clear();
+                break;
+            }
+
+            case value_t::binary:
+            {
+                m_data.m_value.binary->clear();
+                break;
+            }
+
+            case value_t::array:
+            {
+                m_data.m_value.array->clear();
+                break;
+            }
+
+            case value_t::object:
+            {
+                m_data.m_value.object->clear();
+                break;
+            }
+
+            case value_t::null:
+            case value_t::discarded:
+            default:
+                break;
+        }
+    }
+
+    /// @brief add an object to an array
+    /// @sa https://json.nlohmann.me/api/basic_json/push_back/
+    void push_back(basic_json&& val)
+    {
+        // push_back only works for null objects or arrays
+        if (JSON_HEDLEY_UNLIKELY(!(is_null() || is_array())))
+        {
+            JSON_THROW(type_error::create(308, detail::concat("cannot use push_back() with ", type_name()), this));
+        }
+
+        // transform null object into an array
+        if (is_null())
+        {
+            m_data.m_type = value_t::array;
+            m_data.m_value = value_t::array;
+            assert_invariant();
+        }
+
+        // add element to array (move semantics)
+        const auto old_capacity = m_data.m_value.array->capacity();
+        m_data.m_value.array->push_back(std::move(val));
+        set_parent(m_data.m_value.array->back(), old_capacity);
+        // if val is moved from, basic_json move constructor marks it null, so we do not call the destructor
+    }
+
+    /// @brief add an object to an array
+    /// @sa https://json.nlohmann.me/api/basic_json/operator+=/
+    reference operator+=(basic_json&& val)
+    {
+        push_back(std::move(val));
+        return *this;
+    }
+
+    /// @brief add an object to an array
+    /// @sa https://json.nlohmann.me/api/basic_json/push_back/
+    void push_back(const basic_json& val)
+    {
+        // push_back only works for null objects or arrays
+        if (JSON_HEDLEY_UNLIKELY(!(is_null() || is_array())))
+        {
+            JSON_THROW(type_error::create(308, detail::concat("cannot use push_back() with ", type_name()), this));
+        }
+
+        // transform null object into an array
+        if (is_null())
+        {
+            m_data.m_type = value_t::array;
+            m_data.m_value = value_t::array;
+            assert_invariant();
+        }
+
+        // add element to array
+        const auto old_capacity = m_data.m_value.array->capacity();
+        m_data.m_value.array->push_back(val);
+        set_parent(m_data.m_value.array->back(), old_capacity);
+    }
+
+    /// @brief add an object to an array
+    /// @sa https://json.nlohmann.me/api/basic_json/operator+=/
+    reference operator+=(const basic_json& val)
+    {
+        push_back(val);
+        return *this;
+    }
+
+    /// @brief add an object to an object
+    /// @sa https://json.nlohmann.me/api/basic_json/push_back/
+    void push_back(const typename object_t::value_type& val)
+    {
+        // push_back only works for null objects or objects
+        if (JSON_HEDLEY_UNLIKELY(!(is_null() || is_object())))
+        {
+            JSON_THROW(type_error::create(308, detail::concat("cannot use push_back() with ", type_name()), this));
+        }
+
+        // transform null object into an object
+        if (is_null())
+        {
+            m_data.m_type = value_t::object;
+            m_data.m_value = value_t::object;
+            assert_invariant();
+        }
+
+        // add element to object
+        auto res = m_data.m_value.object->insert(val);
+        set_parent(res.first->second);
+    }
+
+    /// @brief add an object to an object
+    /// @sa https://json.nlohmann.me/api/basic_json/operator+=/
+    reference operator+=(const typename object_t::value_type& val)
+    {
+        push_back(val);
+        return *this;
+    }
+
+    /// @brief add an object to an object
+    /// @sa https://json.nlohmann.me/api/basic_json/push_back/
+    void push_back(initializer_list_t init)
+    {
+        if (is_object() && init.size() == 2 && (*init.begin())->is_string())
+        {
+            basic_json&& key = init.begin()->moved_or_copied();
+            push_back(typename object_t::value_type(
+                          std::move(key.get_ref<string_t&>()), (init.begin() + 1)->moved_or_copied()));
+        }
+        else
+        {
+            push_back(basic_json(init));
+        }
+    }
+
+    /// @brief add an object to an object
+    /// @sa https://json.nlohmann.me/api/basic_json/operator+=/
+    reference operator+=(initializer_list_t init)
+    {
+        push_back(init);
+        return *this;
+    }
+
+    /// @brief add an object to an array
+    /// @sa https://json.nlohmann.me/api/basic_json/emplace_back/
+    template<class... Args>
+    reference emplace_back(Args&& ... args)
+    {
+        // emplace_back only works for null objects or arrays
+        if (JSON_HEDLEY_UNLIKELY(!(is_null() || is_array())))
+        {
+            JSON_THROW(type_error::create(311, detail::concat("cannot use emplace_back() with ", type_name()), this));
+        }
+
+        // transform null object into an array
+        if (is_null())
+        {
+            m_data.m_type = value_t::array;
+            m_data.m_value = value_t::array;
+            assert_invariant();
+        }
+
+        // add element to array (perfect forwarding)
+        const auto old_capacity = m_data.m_value.array->capacity();
+        m_data.m_value.array->emplace_back(std::forward<Args>(args)...);
+        return set_parent(m_data.m_value.array->back(), old_capacity);
+    }
+
+    /// @brief add an object to an object if key does not exist
+    /// @sa https://json.nlohmann.me/api/basic_json/emplace/
+    template<class... Args>
+    std::pair<iterator, bool> emplace(Args&& ... args)
+    {
+        // emplace only works for null objects or arrays
+        if (JSON_HEDLEY_UNLIKELY(!(is_null() || is_object())))
+        {
+            JSON_THROW(type_error::create(311, detail::concat("cannot use emplace() with ", type_name()), this));
+        }
+
+        // transform null object into an object
+        if (is_null())
+        {
+            m_data.m_type = value_t::object;
+            m_data.m_value = value_t::object;
+            assert_invariant();
+        }
+
+        // add element to array (perfect forwarding)
+        auto res = m_data.m_value.object->emplace(std::forward<Args>(args)...);
+        set_parent(res.first->second);
+
+        // create result iterator and set iterator to the result of emplace
+        auto it = begin();
+        it.m_it.object_iterator = res.first;
+
+        // return pair of iterator and boolean
+        return {it, res.second};
+    }
+
+    /// Helper for insertion of an iterator
+    /// @note: This uses std::distance to support GCC 4.8,
+    ///        see https://github.com/nlohmann/json/pull/1257
+    template<typename... Args>
+    iterator insert_iterator(const_iterator pos, Args&& ... args)
+    {
+        iterator result(this);
+        JSON_ASSERT(m_data.m_value.array != nullptr);
+
+        auto insert_pos = std::distance(m_data.m_value.array->begin(), pos.m_it.array_iterator);
+        m_data.m_value.array->insert(pos.m_it.array_iterator, std::forward<Args>(args)...);
+        result.m_it.array_iterator = m_data.m_value.array->begin() + insert_pos;
+
+        // This could have been written as:
+        // result.m_it.array_iterator = m_data.m_value.array->insert(pos.m_it.array_iterator, cnt, val);
+        // but the return value of insert is missing in GCC 4.8, so it is written this way instead.
+
+        set_parents();
+        return result;
+    }
+
+    /// @brief inserts element into array
+    /// @sa https://json.nlohmann.me/api/basic_json/insert/
+    iterator insert(const_iterator pos, const basic_json& val)
+    {
+        // insert only works for arrays
+        if (JSON_HEDLEY_LIKELY(is_array()))
+        {
+            // check if iterator pos fits to this JSON value
+            if (JSON_HEDLEY_UNLIKELY(pos.m_object != this))
+            {
+                JSON_THROW(invalid_iterator::create(202, "iterator does not fit current value", this));
+            }
+
+            // insert to array and return iterator
+            return insert_iterator(pos, val);
+        }
+
+        JSON_THROW(type_error::create(309, detail::concat("cannot use insert() with ", type_name()), this));
+    }
+
+    /// @brief inserts element into array
+    /// @sa https://json.nlohmann.me/api/basic_json/insert/
+    iterator insert(const_iterator pos, basic_json&& val)
+    {
+        return insert(pos, val);
+    }
+
+    /// @brief inserts copies of element into array
+    /// @sa https://json.nlohmann.me/api/basic_json/insert/
+    iterator insert(const_iterator pos, size_type cnt, const basic_json& val)
+    {
+        // insert only works for arrays
+        if (JSON_HEDLEY_LIKELY(is_array()))
+        {
+            // check if iterator pos fits to this JSON value
+            if (JSON_HEDLEY_UNLIKELY(pos.m_object != this))
+            {
+                JSON_THROW(invalid_iterator::create(202, "iterator does not fit current value", this));
+            }
+
+            // insert to array and return iterator
+            return insert_iterator(pos, cnt, val);
+        }
+
+        JSON_THROW(type_error::create(309, detail::concat("cannot use insert() with ", type_name()), this));
+    }
+
+    /// @brief inserts range of elements into array
+    /// @sa https://json.nlohmann.me/api/basic_json/insert/
+    iterator insert(const_iterator pos, const_iterator first, const_iterator last)
+    {
+        // insert only works for arrays
+        if (JSON_HEDLEY_UNLIKELY(!is_array()))
+        {
+            JSON_THROW(type_error::create(309, detail::concat("cannot use insert() with ", type_name()), this));
+        }
+
+        // check if iterator pos fits to this JSON value
+        if (JSON_HEDLEY_UNLIKELY(pos.m_object != this))
+        {
+            JSON_THROW(invalid_iterator::create(202, "iterator does not fit current value", this));
+        }
+
+        // check if range iterators belong to the same JSON object
+        if (JSON_HEDLEY_UNLIKELY(first.m_object != last.m_object))
+        {
+            JSON_THROW(invalid_iterator::create(210, "iterators do not fit", this));
+        }
+
+        if (JSON_HEDLEY_UNLIKELY(first.m_object == this))
+        {
+            JSON_THROW(invalid_iterator::create(211, "passed iterators may not belong to container", this));
+        }
+
+        // insert to array and return iterator
+        return insert_iterator(pos, first.m_it.array_iterator, last.m_it.array_iterator);
+    }
+
+    /// @brief inserts elements from initializer list into array
+    /// @sa https://json.nlohmann.me/api/basic_json/insert/
+    iterator insert(const_iterator pos, initializer_list_t ilist)
+    {
+        // insert only works for arrays
+        if (JSON_HEDLEY_UNLIKELY(!is_array()))
+        {
+            JSON_THROW(type_error::create(309, detail::concat("cannot use insert() with ", type_name()), this));
+        }
+
+        // check if iterator pos fits to this JSON value
+        if (JSON_HEDLEY_UNLIKELY(pos.m_object != this))
+        {
+            JSON_THROW(invalid_iterator::create(202, "iterator does not fit current value", this));
+        }
+
+        // insert to array and return iterator
+        return insert_iterator(pos, ilist.begin(), ilist.end());
+    }
+
+    /// @brief inserts range of elements into object
+    /// @sa https://json.nlohmann.me/api/basic_json/insert/
+    void insert(const_iterator first, const_iterator last)
+    {
+        // insert only works for objects
+        if (JSON_HEDLEY_UNLIKELY(!is_object()))
+        {
+            JSON_THROW(type_error::create(309, detail::concat("cannot use insert() with ", type_name()), this));
+        }
+
+        // check if range iterators belong to the same JSON object
+        if (JSON_HEDLEY_UNLIKELY(first.m_object != last.m_object))
+        {
+            JSON_THROW(invalid_iterator::create(210, "iterators do not fit", this));
+        }
+
+        // passed iterators must belong to objects
+        if (JSON_HEDLEY_UNLIKELY(!first.m_object->is_object()))
+        {
+            JSON_THROW(invalid_iterator::create(202, "iterators first and last must point to objects", this));
+        }
+
+        m_data.m_value.object->insert(first.m_it.object_iterator, last.m_it.object_iterator);
+    }
+
+    /// @brief updates a JSON object from another object, overwriting existing keys
+    /// @sa https://json.nlohmann.me/api/basic_json/update/
+    void update(const_reference j, bool merge_objects = false)
+    {
+        update(j.begin(), j.end(), merge_objects);
+    }
+
+    /// @brief updates a JSON object from another object, overwriting existing keys
+    /// @sa https://json.nlohmann.me/api/basic_json/update/
+    void update(const_iterator first, const_iterator last, bool merge_objects = false)
+    {
+        // implicitly convert null value to an empty object
+        if (is_null())
+        {
+            m_data.m_type = value_t::object;
+            m_data.m_value.object = create<object_t>();
+            assert_invariant();
+        }
+
+        if (JSON_HEDLEY_UNLIKELY(!is_object()))
+        {
+            JSON_THROW(type_error::create(312, detail::concat("cannot use update() with ", type_name()), this));
+        }
+
+        // check if range iterators belong to the same JSON object
+        if (JSON_HEDLEY_UNLIKELY(first.m_object != last.m_object))
+        {
+            JSON_THROW(invalid_iterator::create(210, "iterators do not fit", this));
+        }
+
+        // passed iterators must belong to objects
+        if (JSON_HEDLEY_UNLIKELY(!first.m_object->is_object()))
+        {
+            JSON_THROW(type_error::create(312, detail::concat("cannot use update() with ", first.m_object->type_name()), first.m_object));
+        }
+
+        for (auto it = first; it != last; ++it)
+        {
+            if (merge_objects && it.value().is_object())
+            {
+                auto it2 = m_data.m_value.object->find(it.key());
+                if (it2 != m_data.m_value.object->end())
+                {
+                    it2->second.update(it.value(), true);
+                    continue;
+                }
+            }
+            m_data.m_value.object->operator[](it.key()) = it.value();
+#if JSON_DIAGNOSTICS
+            m_data.m_value.object->operator[](it.key()).m_parent = this;
+#endif
+        }
+    }
+
+    /// @brief exchanges the values
+    /// @sa https://json.nlohmann.me/api/basic_json/swap/
+    void swap(reference other) noexcept (
+        std::is_nothrow_move_constructible<value_t>::value&&
+        std::is_nothrow_move_assignable<value_t>::value&&
+        std::is_nothrow_move_constructible<json_value>::value&&
+        std::is_nothrow_move_assignable<json_value>::value
+    )
+    {
+        std::swap(m_data.m_type, other.m_data.m_type);
+        std::swap(m_data.m_value, other.m_data.m_value);
+
+        set_parents();
+        other.set_parents();
+        assert_invariant();
+    }
+
+    /// @brief exchanges the values
+    /// @sa https://json.nlohmann.me/api/basic_json/swap/
+    friend void swap(reference left, reference right) noexcept (
+        std::is_nothrow_move_constructible<value_t>::value&&
+        std::is_nothrow_move_assignable<value_t>::value&&
+        std::is_nothrow_move_constructible<json_value>::value&&
+        std::is_nothrow_move_assignable<json_value>::value
+    )
+    {
+        left.swap(right);
+    }
+
+    /// @brief exchanges the values
+    /// @sa https://json.nlohmann.me/api/basic_json/swap/
+    void swap(array_t& other) // NOLINT(bugprone-exception-escape)
+    {
+        // swap only works for arrays
+        if (JSON_HEDLEY_LIKELY(is_array()))
+        {
+            using std::swap;
+            swap(*(m_data.m_value.array), other);
+        }
+        else
+        {
+            JSON_THROW(type_error::create(310, detail::concat("cannot use swap(array_t&) with ", type_name()), this));
+        }
+    }
+
+    /// @brief exchanges the values
+    /// @sa https://json.nlohmann.me/api/basic_json/swap/
+    void swap(object_t& other) // NOLINT(bugprone-exception-escape)
+    {
+        // swap only works for objects
+        if (JSON_HEDLEY_LIKELY(is_object()))
+        {
+            using std::swap;
+            swap(*(m_data.m_value.object), other);
+        }
+        else
+        {
+            JSON_THROW(type_error::create(310, detail::concat("cannot use swap(object_t&) with ", type_name()), this));
+        }
+    }
+
+    /// @brief exchanges the values
+    /// @sa https://json.nlohmann.me/api/basic_json/swap/
+    void swap(string_t& other) // NOLINT(bugprone-exception-escape)
+    {
+        // swap only works for strings
+        if (JSON_HEDLEY_LIKELY(is_string()))
+        {
+            using std::swap;
+            swap(*(m_data.m_value.string), other);
+        }
+        else
+        {
+            JSON_THROW(type_error::create(310, detail::concat("cannot use swap(string_t&) with ", type_name()), this));
+        }
+    }
+
+    /// @brief exchanges the values
+    /// @sa https://json.nlohmann.me/api/basic_json/swap/
+    void swap(binary_t& other) // NOLINT(bugprone-exception-escape)
+    {
+        // swap only works for strings
+        if (JSON_HEDLEY_LIKELY(is_binary()))
+        {
+            using std::swap;
+            swap(*(m_data.m_value.binary), other);
+        }
+        else
+        {
+            JSON_THROW(type_error::create(310, detail::concat("cannot use swap(binary_t&) with ", type_name()), this));
+        }
+    }
+
+    /// @brief exchanges the values
+    /// @sa https://json.nlohmann.me/api/basic_json/swap/
+    void swap(typename binary_t::container_type& other) // NOLINT(bugprone-exception-escape)
+    {
+        // swap only works for strings
+        if (JSON_HEDLEY_LIKELY(is_binary()))
+        {
+            using std::swap;
+            swap(*(m_data.m_value.binary), other);
+        }
+        else
+        {
+            JSON_THROW(type_error::create(310, detail::concat("cannot use swap(binary_t::container_type&) with ", type_name()), this));
+        }
+    }
+
+    /// @}
+
+    //////////////////////////////////////////
+    // lexicographical comparison operators //
+    //////////////////////////////////////////
+
+    /// @name lexicographical comparison operators
+    /// @{
+
+    // note parentheses around operands are necessary; see
+    // https://github.com/nlohmann/json/issues/1530
+#define JSON_IMPLEMENT_OPERATOR(op, null_result, unordered_result, default_result)                       \
+    const auto lhs_type = lhs.type();                                                                    \
+    const auto rhs_type = rhs.type();                                                                    \
+    \
+    if (lhs_type == rhs_type) /* NOLINT(readability/braces) */                                           \
+    {                                                                                                    \
+        switch (lhs_type)                                                                                \
+        {                                                                                                \
+            case value_t::array:                                                                         \
+                return (*lhs.m_data.m_value.array) op (*rhs.m_data.m_value.array);                                     \
+                \
+            case value_t::object:                                                                        \
+                return (*lhs.m_data.m_value.object) op (*rhs.m_data.m_value.object);                                   \
+                \
+            case value_t::null:                                                                          \
+                return (null_result);                                                                    \
+                \
+            case value_t::string:                                                                        \
+                return (*lhs.m_data.m_value.string) op (*rhs.m_data.m_value.string);                                   \
+                \
+            case value_t::boolean:                                                                       \
+                return (lhs.m_data.m_value.boolean) op (rhs.m_data.m_value.boolean);                                   \
+                \
+            case value_t::number_integer:                                                                \
+                return (lhs.m_data.m_value.number_integer) op (rhs.m_data.m_value.number_integer);                     \
+                \
+            case value_t::number_unsigned:                                                               \
+                return (lhs.m_data.m_value.number_unsigned) op (rhs.m_data.m_value.number_unsigned);                   \
+                \
+            case value_t::number_float:                                                                  \
+                return (lhs.m_data.m_value.number_float) op (rhs.m_data.m_value.number_float);                         \
+                \
+            case value_t::binary:                                                                        \
+                return (*lhs.m_data.m_value.binary) op (*rhs.m_data.m_value.binary);                                   \
+                \
+            case value_t::discarded:                                                                     \
+            default:                                                                                     \
+                return (unordered_result);                                                               \
+        }                                                                                                \
+    }                                                                                                    \
+    else if (lhs_type == value_t::number_integer && rhs_type == value_t::number_float)                   \
+    {                                                                                                    \
+        return static_cast<number_float_t>(lhs.m_data.m_value.number_integer) op rhs.m_data.m_value.number_float;      \
+    }                                                                                                    \
+    else if (lhs_type == value_t::number_float && rhs_type == value_t::number_integer)                   \
+    {                                                                                                    \
+        return lhs.m_data.m_value.number_float op static_cast<number_float_t>(rhs.m_data.m_value.number_integer);      \
+    }                                                                                                    \
+    else if (lhs_type == value_t::number_unsigned && rhs_type == value_t::number_float)                  \
+    {                                                                                                    \
+        return static_cast<number_float_t>(lhs.m_data.m_value.number_unsigned) op rhs.m_data.m_value.number_float;     \
+    }                                                                                                    \
+    else if (lhs_type == value_t::number_float && rhs_type == value_t::number_unsigned)                  \
+    {                                                                                                    \
+        return lhs.m_data.m_value.number_float op static_cast<number_float_t>(rhs.m_data.m_value.number_unsigned);     \
+    }                                                                                                    \
+    else if (lhs_type == value_t::number_unsigned && rhs_type == value_t::number_integer)                \
+    {                                                                                                    \
+        return static_cast<number_integer_t>(lhs.m_data.m_value.number_unsigned) op rhs.m_data.m_value.number_integer; \
+    }                                                                                                    \
+    else if (lhs_type == value_t::number_integer && rhs_type == value_t::number_unsigned)                \
+    {                                                                                                    \
+        return lhs.m_data.m_value.number_integer op static_cast<number_integer_t>(rhs.m_data.m_value.number_unsigned); \
+    }                                                                                                    \
+    else if(compares_unordered(lhs, rhs))\
+    {\
+        return (unordered_result);\
+    }\
+    \
+    return (default_result);
+
+  JSON_PRIVATE_UNLESS_TESTED:
+    // returns true if:
+    // - any operand is NaN and the other operand is of number type
+    // - any operand is discarded
+    // in legacy mode, discarded values are considered ordered if
+    // an operation is computed as an odd number of inverses of others
+    static bool compares_unordered(const_reference lhs, const_reference rhs, bool inverse = false) noexcept
+    {
+        if ((lhs.is_number_float() && std::isnan(lhs.m_data.m_value.number_float) && rhs.is_number())
+                || (rhs.is_number_float() && std::isnan(rhs.m_data.m_value.number_float) && lhs.is_number()))
+        {
+            return true;
+        }
+#if JSON_USE_LEGACY_DISCARDED_VALUE_COMPARISON
+        return (lhs.is_discarded() || rhs.is_discarded()) && !inverse;
+#else
+        static_cast<void>(inverse);
+        return lhs.is_discarded() || rhs.is_discarded();
+#endif
+    }
+
+  private:
+    bool compares_unordered(const_reference rhs, bool inverse = false) const noexcept
+    {
+        return compares_unordered(*this, rhs, inverse);
+    }
+
+  public:
+#if JSON_HAS_THREE_WAY_COMPARISON
+    /// @brief comparison: equal
+    /// @sa https://json.nlohmann.me/api/basic_json/operator_eq/
+    bool operator==(const_reference rhs) const noexcept
+    {
+#ifdef __GNUC__
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wfloat-equal"
+#endif
+        const_reference lhs = *this;
+        JSON_IMPLEMENT_OPERATOR( ==, true, false, false)
+#ifdef __GNUC__
+#pragma GCC diagnostic pop
+#endif
+    }
+
+    /// @brief comparison: equal
+    /// @sa https://json.nlohmann.me/api/basic_json/operator_eq/
+    template<typename ScalarType>
+    requires std::is_scalar_v<ScalarType>
+    bool operator==(ScalarType rhs) const noexcept
+    {
+        return *this == basic_json(rhs);
+    }
+
+    /// @brief comparison: not equal
+    /// @sa https://json.nlohmann.me/api/basic_json/operator_ne/
+    bool operator!=(const_reference rhs) const noexcept
+    {
+        if (compares_unordered(rhs, true))
+        {
+            return false;
+        }
+        return !operator==(rhs);
+    }
+
+    /// @brief comparison: 3-way
+    /// @sa https://json.nlohmann.me/api/basic_json/operator_spaceship/
+    std::partial_ordering operator<=>(const_reference rhs) const noexcept // *NOPAD*
+    {
+        const_reference lhs = *this;
+        // default_result is used if we cannot compare values. In that case,
+        // we compare types.
+        JSON_IMPLEMENT_OPERATOR(<=>, // *NOPAD*
+                                std::partial_ordering::equivalent,
+                                std::partial_ordering::unordered,
+                                lhs_type <=> rhs_type) // *NOPAD*
+    }
+
+    /// @brief comparison: 3-way
+    /// @sa https://json.nlohmann.me/api/basic_json/operator_spaceship/
+    template<typename ScalarType>
+    requires std::is_scalar_v<ScalarType>
+    std::partial_ordering operator<=>(ScalarType rhs) const noexcept // *NOPAD*
+    {
+        return *this <=> basic_json(rhs); // *NOPAD*
+    }
+
+#if JSON_USE_LEGACY_DISCARDED_VALUE_COMPARISON
+    // all operators that are computed as an odd number of inverses of others
+    // need to be overloaded to emulate the legacy comparison behavior
+
+    /// @brief comparison: less than or equal
+    /// @sa https://json.nlohmann.me/api/basic_json/operator_le/
+    JSON_HEDLEY_DEPRECATED_FOR(3.11.0, undef JSON_USE_LEGACY_DISCARDED_VALUE_COMPARISON)
+    bool operator<=(const_reference rhs) const noexcept
+    {
+        if (compares_unordered(rhs, true))
+        {
+            return false;
+        }
+        return !(rhs < *this);
+    }
+
+    /// @brief comparison: less than or equal
+    /// @sa https://json.nlohmann.me/api/basic_json/operator_le/
+    template<typename ScalarType>
+    requires std::is_scalar_v<ScalarType>
+    bool operator<=(ScalarType rhs) const noexcept
+    {
+        return *this <= basic_json(rhs);
+    }
+
+    /// @brief comparison: greater than or equal
+    /// @sa https://json.nlohmann.me/api/basic_json/operator_ge/
+    JSON_HEDLEY_DEPRECATED_FOR(3.11.0, undef JSON_USE_LEGACY_DISCARDED_VALUE_COMPARISON)
+    bool operator>=(const_reference rhs) const noexcept
+    {
+        if (compares_unordered(rhs, true))
+        {
+            return false;
+        }
+        return !(*this < rhs);
+    }
+
+    /// @brief comparison: greater than or equal
+    /// @sa https://json.nlohmann.me/api/basic_json/operator_ge/
+    template<typename ScalarType>
+    requires std::is_scalar_v<ScalarType>
+    bool operator>=(ScalarType rhs) const noexcept
+    {
+        return *this >= basic_json(rhs);
+    }
+#endif
+#else
+    /// @brief comparison: equal
+    /// @sa https://json.nlohmann.me/api/basic_json/operator_eq/
+    friend bool operator==(const_reference lhs, const_reference rhs) noexcept
+    {
+#ifdef __GNUC__
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wfloat-equal"
+#endif
+        JSON_IMPLEMENT_OPERATOR( ==, true, false, false)
+#ifdef __GNUC__
+#pragma GCC diagnostic pop
+#endif
+    }
+
+    /// @brief comparison: equal
+    /// @sa https://json.nlohmann.me/api/basic_json/operator_eq/
+    template<typename ScalarType, typename std::enable_if<
+                 std::is_scalar<ScalarType>::value, int>::type = 0>
+    friend bool operator==(const_reference lhs, ScalarType rhs) noexcept
+    {
+        return lhs == basic_json(rhs);
+    }
+
+    /// @brief comparison: equal
+    /// @sa https://json.nlohmann.me/api/basic_json/operator_eq/
+    template<typename ScalarType, typename std::enable_if<
+                 std::is_scalar<ScalarType>::value, int>::type = 0>
+    friend bool operator==(ScalarType lhs, const_reference rhs) noexcept
+    {
+        return basic_json(lhs) == rhs;
+    }
+
+    /// @brief comparison: not equal
+    /// @sa https://json.nlohmann.me/api/basic_json/operator_ne/
+    friend bool operator!=(const_reference lhs, const_reference rhs) noexcept
+    {
+        if (compares_unordered(lhs, rhs, true))
+        {
+            return false;
+        }
+        return !(lhs == rhs);
+    }
+
+    /// @brief comparison: not equal
+    /// @sa https://json.nlohmann.me/api/basic_json/operator_ne/
+    template<typename ScalarType, typename std::enable_if<
+                 std::is_scalar<ScalarType>::value, int>::type = 0>
+    friend bool operator!=(const_reference lhs, ScalarType rhs) noexcept
+    {
+        return lhs != basic_json(rhs);
+    }
+
+    /// @brief comparison: not equal
+    /// @sa https://json.nlohmann.me/api/basic_json/operator_ne/
+    template<typename ScalarType, typename std::enable_if<
+                 std::is_scalar<ScalarType>::value, int>::type = 0>
+    friend bool operator!=(ScalarType lhs, const_reference rhs) noexcept
+    {
+        return basic_json(lhs) != rhs;
+    }
+
+    /// @brief comparison: less than
+    /// @sa https://json.nlohmann.me/api/basic_json/operator_lt/
+    friend bool operator<(const_reference lhs, const_reference rhs) noexcept
+    {
+        // default_result is used if we cannot compare values. In that case,
+        // we compare types. Note we have to call the operator explicitly,
+        // because MSVC has problems otherwise.
+        JSON_IMPLEMENT_OPERATOR( <, false, false, operator<(lhs_type, rhs_type))
+    }
+
+    /// @brief comparison: less than
+    /// @sa https://json.nlohmann.me/api/basic_json/operator_lt/
+    template<typename ScalarType, typename std::enable_if<
+                 std::is_scalar<ScalarType>::value, int>::type = 0>
+    friend bool operator<(const_reference lhs, ScalarType rhs) noexcept
+    {
+        return lhs < basic_json(rhs);
+    }
+
+    /// @brief comparison: less than
+    /// @sa https://json.nlohmann.me/api/basic_json/operator_lt/
+    template<typename ScalarType, typename std::enable_if<
+                 std::is_scalar<ScalarType>::value, int>::type = 0>
+    friend bool operator<(ScalarType lhs, const_reference rhs) noexcept
+    {
+        return basic_json(lhs) < rhs;
+    }
+
+    /// @brief comparison: less than or equal
+    /// @sa https://json.nlohmann.me/api/basic_json/operator_le/
+    friend bool operator<=(const_reference lhs, const_reference rhs) noexcept
+    {
+        if (compares_unordered(lhs, rhs, true))
+        {
+            return false;
+        }
+        return !(rhs < lhs);
+    }
+
+    /// @brief comparison: less than or equal
+    /// @sa https://json.nlohmann.me/api/basic_json/operator_le/
+    template<typename ScalarType, typename std::enable_if<
+                 std::is_scalar<ScalarType>::value, int>::type = 0>
+    friend bool operator<=(const_reference lhs, ScalarType rhs) noexcept
+    {
+        return lhs <= basic_json(rhs);
+    }
+
+    /// @brief comparison: less than or equal
+    /// @sa https://json.nlohmann.me/api/basic_json/operator_le/
+    template<typename ScalarType, typename std::enable_if<
+                 std::is_scalar<ScalarType>::value, int>::type = 0>
+    friend bool operator<=(ScalarType lhs, const_reference rhs) noexcept
+    {
+        return basic_json(lhs) <= rhs;
+    }
+
+    /// @brief comparison: greater than
+    /// @sa https://json.nlohmann.me/api/basic_json/operator_gt/
+    friend bool operator>(const_reference lhs, const_reference rhs) noexcept
+    {
+        // double inverse
+        if (compares_unordered(lhs, rhs))
+        {
+            return false;
+        }
+        return !(lhs <= rhs);
+    }
+
+    /// @brief comparison: greater than
+    /// @sa https://json.nlohmann.me/api/basic_json/operator_gt/
+    template<typename ScalarType, typename std::enable_if<
+                 std::is_scalar<ScalarType>::value, int>::type = 0>
+    friend bool operator>(const_reference lhs, ScalarType rhs) noexcept
+    {
+        return lhs > basic_json(rhs);
+    }
+
+    /// @brief comparison: greater than
+    /// @sa https://json.nlohmann.me/api/basic_json/operator_gt/
+    template<typename ScalarType, typename std::enable_if<
+                 std::is_scalar<ScalarType>::value, int>::type = 0>
+    friend bool operator>(ScalarType lhs, const_reference rhs) noexcept
+    {
+        return basic_json(lhs) > rhs;
+    }
+
+    /// @brief comparison: greater than or equal
+    /// @sa https://json.nlohmann.me/api/basic_json/operator_ge/
+    friend bool operator>=(const_reference lhs, const_reference rhs) noexcept
+    {
+        if (compares_unordered(lhs, rhs, true))
+        {
+            return false;
+        }
+        return !(lhs < rhs);
+    }
+
+    /// @brief comparison: greater than or equal
+    /// @sa https://json.nlohmann.me/api/basic_json/operator_ge/
+    template<typename ScalarType, typename std::enable_if<
+                 std::is_scalar<ScalarType>::value, int>::type = 0>
+    friend bool operator>=(const_reference lhs, ScalarType rhs) noexcept
+    {
+        return lhs >= basic_json(rhs);
+    }
+
+    /// @brief comparison: greater than or equal
+    /// @sa https://json.nlohmann.me/api/basic_json/operator_ge/
+    template<typename ScalarType, typename std::enable_if<
+                 std::is_scalar<ScalarType>::value, int>::type = 0>
+    friend bool operator>=(ScalarType lhs, const_reference rhs) noexcept
+    {
+        return basic_json(lhs) >= rhs;
+    }
+#endif
+
+#undef JSON_IMPLEMENT_OPERATOR
+
+    /// @}
+
+    ///////////////////
+    // serialization //
+    ///////////////////
+
+    /// @name serialization
+    /// @{
+#ifndef JSON_NO_IO
+    /// @brief serialize to stream
+    /// @sa https://json.nlohmann.me/api/basic_json/operator_ltlt/
+    friend std::ostream& operator<<(std::ostream& o, const basic_json& j)
+    {
+        // read width member and use it as indentation parameter if nonzero
+        const bool pretty_print = o.width() > 0;
+        const auto indentation = pretty_print ? o.width() : 0;
+
+        // reset width to 0 for subsequent calls to this stream
+        o.width(0);
+
+        // do the actual serialization
+        serializer s(detail::output_adapter<char>(o), o.fill());
+        s.dump(j, pretty_print, false, static_cast<unsigned int>(indentation));
+        return o;
+    }
+
+    /// @brief serialize to stream
+    /// @sa https://json.nlohmann.me/api/basic_json/operator_ltlt/
+    /// @deprecated This function is deprecated since 3.0.0 and will be removed in
+    ///             version 4.0.0 of the library. Please use
+    ///             operator<<(std::ostream&, const basic_json&) instead; that is,
+    ///             replace calls like `j >> o;` with `o << j;`.
+    JSON_HEDLEY_DEPRECATED_FOR(3.0.0, operator<<(std::ostream&, const basic_json&))
+    friend std::ostream& operator>>(const basic_json& j, std::ostream& o)
+    {
+        return o << j;
+    }
+#endif  // JSON_NO_IO
+    /// @}
+
+
+    /////////////////////
+    // deserialization //
+    /////////////////////
+
+    /// @name deserialization
+    /// @{
+
+    /// @brief deserialize from a compatible input
+    /// @sa https://json.nlohmann.me/api/basic_json/parse/
+    template<typename InputType>
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    static basic_json parse(InputType&& i,
+                            const parser_callback_t cb = nullptr,
+                            const bool allow_exceptions = true,
+                            const bool ignore_comments = false)
+    {
+        basic_json result;
+        parser(detail::input_adapter(std::forward<InputType>(i)), cb, allow_exceptions, ignore_comments).parse(true, result);
+        return result;
+    }
+
+    /// @brief deserialize from a pair of character iterators
+    /// @sa https://json.nlohmann.me/api/basic_json/parse/
+    template<typename IteratorType>
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    static basic_json parse(IteratorType first,
+                            IteratorType last,
+                            const parser_callback_t cb = nullptr,
+                            const bool allow_exceptions = true,
+                            const bool ignore_comments = false)
+    {
+        basic_json result;
+        parser(detail::input_adapter(std::move(first), std::move(last)), cb, allow_exceptions, ignore_comments).parse(true, result);
+        return result;
+    }
+
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    JSON_HEDLEY_DEPRECATED_FOR(3.8.0, parse(ptr, ptr + len))
+    static basic_json parse(detail::span_input_adapter&& i,
+                            const parser_callback_t cb = nullptr,
+                            const bool allow_exceptions = true,
+                            const bool ignore_comments = false)
+    {
+        basic_json result;
+        parser(i.get(), cb, allow_exceptions, ignore_comments).parse(true, result);
+        return result;
+    }
+
+    /// @brief check if the input is valid JSON
+    /// @sa https://json.nlohmann.me/api/basic_json/accept/
+    template<typename InputType>
+    static bool accept(InputType&& i,
+                       const bool ignore_comments = false)
+    {
+        return parser(detail::input_adapter(std::forward<InputType>(i)), nullptr, false, ignore_comments).accept(true);
+    }
+
+    /// @brief check if the input is valid JSON
+    /// @sa https://json.nlohmann.me/api/basic_json/accept/
+    template<typename IteratorType>
+    static bool accept(IteratorType first, IteratorType last,
+                       const bool ignore_comments = false)
+    {
+        return parser(detail::input_adapter(std::move(first), std::move(last)), nullptr, false, ignore_comments).accept(true);
+    }
+
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    JSON_HEDLEY_DEPRECATED_FOR(3.8.0, accept(ptr, ptr + len))
+    static bool accept(detail::span_input_adapter&& i,
+                       const bool ignore_comments = false)
+    {
+        return parser(i.get(), nullptr, false, ignore_comments).accept(true);
+    }
+
+    /// @brief generate SAX events
+    /// @sa https://json.nlohmann.me/api/basic_json/sax_parse/
+    template <typename InputType, typename SAX>
+    JSON_HEDLEY_NON_NULL(2)
+    static bool sax_parse(InputType&& i, SAX* sax,
+                          input_format_t format = input_format_t::json,
+                          const bool strict = true,
+                          const bool ignore_comments = false)
+    {
+        auto ia = detail::input_adapter(std::forward<InputType>(i));
+        return format == input_format_t::json
+               ? parser(std::move(ia), nullptr, true, ignore_comments).sax_parse(sax, strict)
+               : detail::binary_reader<basic_json, decltype(ia), SAX>(std::move(ia), format).sax_parse(format, sax, strict);
+    }
+
+    /// @brief generate SAX events
+    /// @sa https://json.nlohmann.me/api/basic_json/sax_parse/
+    template<class IteratorType, class SAX>
+    JSON_HEDLEY_NON_NULL(3)
+    static bool sax_parse(IteratorType first, IteratorType last, SAX* sax,
+                          input_format_t format = input_format_t::json,
+                          const bool strict = true,
+                          const bool ignore_comments = false)
+    {
+        auto ia = detail::input_adapter(std::move(first), std::move(last));
+        return format == input_format_t::json
+               ? parser(std::move(ia), nullptr, true, ignore_comments).sax_parse(sax, strict)
+               : detail::binary_reader<basic_json, decltype(ia), SAX>(std::move(ia), format).sax_parse(format, sax, strict);
+    }
+
+    /// @brief generate SAX events
+    /// @sa https://json.nlohmann.me/api/basic_json/sax_parse/
+    /// @deprecated This function is deprecated since 3.8.0 and will be removed in
+    ///             version 4.0.0 of the library. Please use
+    ///             sax_parse(ptr, ptr + len) instead.
+    template <typename SAX>
+    JSON_HEDLEY_DEPRECATED_FOR(3.8.0, sax_parse(ptr, ptr + len, ...))
+    JSON_HEDLEY_NON_NULL(2)
+    static bool sax_parse(detail::span_input_adapter&& i, SAX* sax,
+                          input_format_t format = input_format_t::json,
+                          const bool strict = true,
+                          const bool ignore_comments = false)
+    {
+        auto ia = i.get();
+        return format == input_format_t::json
+               // NOLINTNEXTLINE(hicpp-move-const-arg,performance-move-const-arg)
+               ? parser(std::move(ia), nullptr, true, ignore_comments).sax_parse(sax, strict)
+               // NOLINTNEXTLINE(hicpp-move-const-arg,performance-move-const-arg)
+               : detail::binary_reader<basic_json, decltype(ia), SAX>(std::move(ia), format).sax_parse(format, sax, strict);
+    }
+#ifndef JSON_NO_IO
+    /// @brief deserialize from stream
+    /// @sa https://json.nlohmann.me/api/basic_json/operator_gtgt/
+    /// @deprecated This stream operator is deprecated since 3.0.0 and will be removed in
+    ///             version 4.0.0 of the library. Please use
+    ///             operator>>(std::istream&, basic_json&) instead; that is,
+    ///             replace calls like `j << i;` with `i >> j;`.
+    JSON_HEDLEY_DEPRECATED_FOR(3.0.0, operator>>(std::istream&, basic_json&))
+    friend std::istream& operator<<(basic_json& j, std::istream& i)
+    {
+        return operator>>(i, j);
+    }
+
+    /// @brief deserialize from stream
+    /// @sa https://json.nlohmann.me/api/basic_json/operator_gtgt/
+    friend std::istream& operator>>(std::istream& i, basic_json& j)
+    {
+        parser(detail::input_adapter(i)).parse(false, j);
+        return i;
+    }
+#endif  // JSON_NO_IO
+    /// @}
+
+    ///////////////////////////
+    // convenience functions //
+    ///////////////////////////
+
+    /// @brief return the type as string
+    /// @sa https://json.nlohmann.me/api/basic_json/type_name/
+    JSON_HEDLEY_RETURNS_NON_NULL
+    const char* type_name() const noexcept
+    {
+        switch (m_data.m_type)
+        {
+            case value_t::null:
+                return "null";
+            case value_t::object:
+                return "object";
+            case value_t::array:
+                return "array";
+            case value_t::string:
+                return "string";
+            case value_t::boolean:
+                return "boolean";
+            case value_t::binary:
+                return "binary";
+            case value_t::discarded:
+                return "discarded";
+            case value_t::number_integer:
+            case value_t::number_unsigned:
+            case value_t::number_float:
+            default:
+                return "number";
+        }
+    }
+
+
+  JSON_PRIVATE_UNLESS_TESTED:
+    //////////////////////
+    // member variables //
+    //////////////////////
+
+    struct data
+    {
+        /// the type of the current element
+        value_t m_type = value_t::null;
+
+        /// the value of the current element
+        json_value m_value = {};
+
+        data(const value_t v)
+            : m_type(v), m_value(v)
+        {
+        }
+
+        data(size_type cnt, const basic_json& val)
+            : m_type(value_t::array)
+        {
+            m_value.array = create<array_t>(cnt, val);
+        }
+
+        data() noexcept = default;
+        data(data&&) noexcept = default;
+        data(const data&) noexcept = delete;
+        data& operator=(data&&) noexcept = delete;
+        data& operator=(const data&) noexcept = delete;
+
+        ~data() noexcept
+        {
+            m_value.destroy(m_type);
+        }
+    };
+
+    data m_data = {};
+
+#if JSON_DIAGNOSTICS
+    /// a pointer to a parent value (for debugging purposes)
+    basic_json* m_parent = nullptr;
+#endif
+
+    //////////////////////////////////////////
+    // binary serialization/deserialization //
+    //////////////////////////////////////////
+
+    /// @name binary serialization/deserialization support
+    /// @{
+
+  public:
+    /// @brief create a CBOR serialization of a given JSON value
+    /// @sa https://json.nlohmann.me/api/basic_json/to_cbor/
+    static std::vector<std::uint8_t> to_cbor(const basic_json& j)
+    {
+        std::vector<std::uint8_t> result;
+        to_cbor(j, result);
+        return result;
+    }
+
+    /// @brief create a CBOR serialization of a given JSON value
+    /// @sa https://json.nlohmann.me/api/basic_json/to_cbor/
+    static void to_cbor(const basic_json& j, detail::output_adapter<std::uint8_t> o)
+    {
+        binary_writer<std::uint8_t>(o).write_cbor(j);
+    }
+
+    /// @brief create a CBOR serialization of a given JSON value
+    /// @sa https://json.nlohmann.me/api/basic_json/to_cbor/
+    static void to_cbor(const basic_json& j, detail::output_adapter<char> o)
+    {
+        binary_writer<char>(o).write_cbor(j);
+    }
+
+    /// @brief create a MessagePack serialization of a given JSON value
+    /// @sa https://json.nlohmann.me/api/basic_json/to_msgpack/
+    static std::vector<std::uint8_t> to_msgpack(const basic_json& j)
+    {
+        std::vector<std::uint8_t> result;
+        to_msgpack(j, result);
+        return result;
+    }
+
+    /// @brief create a MessagePack serialization of a given JSON value
+    /// @sa https://json.nlohmann.me/api/basic_json/to_msgpack/
+    static void to_msgpack(const basic_json& j, detail::output_adapter<std::uint8_t> o)
+    {
+        binary_writer<std::uint8_t>(o).write_msgpack(j);
+    }
+
+    /// @brief create a MessagePack serialization of a given JSON value
+    /// @sa https://json.nlohmann.me/api/basic_json/to_msgpack/
+    static void to_msgpack(const basic_json& j, detail::output_adapter<char> o)
+    {
+        binary_writer<char>(o).write_msgpack(j);
+    }
+
+    /// @brief create a UBJSON serialization of a given JSON value
+    /// @sa https://json.nlohmann.me/api/basic_json/to_ubjson/
+    static std::vector<std::uint8_t> to_ubjson(const basic_json& j,
+            const bool use_size = false,
+            const bool use_type = false)
+    {
+        std::vector<std::uint8_t> result;
+        to_ubjson(j, result, use_size, use_type);
+        return result;
+    }
+
+    /// @brief create a UBJSON serialization of a given JSON value
+    /// @sa https://json.nlohmann.me/api/basic_json/to_ubjson/
+    static void to_ubjson(const basic_json& j, detail::output_adapter<std::uint8_t> o,
+                          const bool use_size = false, const bool use_type = false)
+    {
+        binary_writer<std::uint8_t>(o).write_ubjson(j, use_size, use_type);
+    }
+
+    /// @brief create a UBJSON serialization of a given JSON value
+    /// @sa https://json.nlohmann.me/api/basic_json/to_ubjson/
+    static void to_ubjson(const basic_json& j, detail::output_adapter<char> o,
+                          const bool use_size = false, const bool use_type = false)
+    {
+        binary_writer<char>(o).write_ubjson(j, use_size, use_type);
+    }
+
+    /// @brief create a BJData serialization of a given JSON value
+    /// @sa https://json.nlohmann.me/api/basic_json/to_bjdata/
+    static std::vector<std::uint8_t> to_bjdata(const basic_json& j,
+            const bool use_size = false,
+            const bool use_type = false)
+    {
+        std::vector<std::uint8_t> result;
+        to_bjdata(j, result, use_size, use_type);
+        return result;
+    }
+
+    /// @brief create a BJData serialization of a given JSON value
+    /// @sa https://json.nlohmann.me/api/basic_json/to_bjdata/
+    static void to_bjdata(const basic_json& j, detail::output_adapter<std::uint8_t> o,
+                          const bool use_size = false, const bool use_type = false)
+    {
+        binary_writer<std::uint8_t>(o).write_ubjson(j, use_size, use_type, true, true);
+    }
+
+    /// @brief create a BJData serialization of a given JSON value
+    /// @sa https://json.nlohmann.me/api/basic_json/to_bjdata/
+    static void to_bjdata(const basic_json& j, detail::output_adapter<char> o,
+                          const bool use_size = false, const bool use_type = false)
+    {
+        binary_writer<char>(o).write_ubjson(j, use_size, use_type, true, true);
+    }
+
+    /// @brief create a BSON serialization of a given JSON value
+    /// @sa https://json.nlohmann.me/api/basic_json/to_bson/
+    static std::vector<std::uint8_t> to_bson(const basic_json& j)
+    {
+        std::vector<std::uint8_t> result;
+        to_bson(j, result);
+        return result;
+    }
+
+    /// @brief create a BSON serialization of a given JSON value
+    /// @sa https://json.nlohmann.me/api/basic_json/to_bson/
+    static void to_bson(const basic_json& j, detail::output_adapter<std::uint8_t> o)
+    {
+        binary_writer<std::uint8_t>(o).write_bson(j);
+    }
+
+    /// @brief create a BSON serialization of a given JSON value
+    /// @sa https://json.nlohmann.me/api/basic_json/to_bson/
+    static void to_bson(const basic_json& j, detail::output_adapter<char> o)
+    {
+        binary_writer<char>(o).write_bson(j);
+    }
+
+    /// @brief create a JSON value from an input in CBOR format
+    /// @sa https://json.nlohmann.me/api/basic_json/from_cbor/
+    template<typename InputType>
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    static basic_json from_cbor(InputType&& i,
+                                const bool strict = true,
+                                const bool allow_exceptions = true,
+                                const cbor_tag_handler_t tag_handler = cbor_tag_handler_t::error)
+    {
+        basic_json result;
+        detail::json_sax_dom_parser<basic_json> sdp(result, allow_exceptions);
+        auto ia = detail::input_adapter(std::forward<InputType>(i));
+        const bool res = binary_reader<decltype(ia)>(std::move(ia), input_format_t::cbor).sax_parse(input_format_t::cbor, &sdp, strict, tag_handler);
+        return res ? result : basic_json(value_t::discarded);
+    }
+
+    /// @brief create a JSON value from an input in CBOR format
+    /// @sa https://json.nlohmann.me/api/basic_json/from_cbor/
+    template<typename IteratorType>
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    static basic_json from_cbor(IteratorType first, IteratorType last,
+                                const bool strict = true,
+                                const bool allow_exceptions = true,
+                                const cbor_tag_handler_t tag_handler = cbor_tag_handler_t::error)
+    {
+        basic_json result;
+        detail::json_sax_dom_parser<basic_json> sdp(result, allow_exceptions);
+        auto ia = detail::input_adapter(std::move(first), std::move(last));
+        const bool res = binary_reader<decltype(ia)>(std::move(ia), input_format_t::cbor).sax_parse(input_format_t::cbor, &sdp, strict, tag_handler);
+        return res ? result : basic_json(value_t::discarded);
+    }
+
+    template<typename T>
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    JSON_HEDLEY_DEPRECATED_FOR(3.8.0, from_cbor(ptr, ptr + len))
+    static basic_json from_cbor(const T* ptr, std::size_t len,
+                                const bool strict = true,
+                                const bool allow_exceptions = true,
+                                const cbor_tag_handler_t tag_handler = cbor_tag_handler_t::error)
+    {
+        return from_cbor(ptr, ptr + len, strict, allow_exceptions, tag_handler);
+    }
+
+
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    JSON_HEDLEY_DEPRECATED_FOR(3.8.0, from_cbor(ptr, ptr + len))
+    static basic_json from_cbor(detail::span_input_adapter&& i,
+                                const bool strict = true,
+                                const bool allow_exceptions = true,
+                                const cbor_tag_handler_t tag_handler = cbor_tag_handler_t::error)
+    {
+        basic_json result;
+        detail::json_sax_dom_parser<basic_json> sdp(result, allow_exceptions);
+        auto ia = i.get();
+        // NOLINTNEXTLINE(hicpp-move-const-arg,performance-move-const-arg)
+        const bool res = binary_reader<decltype(ia)>(std::move(ia), input_format_t::cbor).sax_parse(input_format_t::cbor, &sdp, strict, tag_handler);
+        return res ? result : basic_json(value_t::discarded);
+    }
+
+    /// @brief create a JSON value from an input in MessagePack format
+    /// @sa https://json.nlohmann.me/api/basic_json/from_msgpack/
+    template<typename InputType>
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    static basic_json from_msgpack(InputType&& i,
+                                   const bool strict = true,
+                                   const bool allow_exceptions = true)
+    {
+        basic_json result;
+        detail::json_sax_dom_parser<basic_json> sdp(result, allow_exceptions);
+        auto ia = detail::input_adapter(std::forward<InputType>(i));
+        const bool res = binary_reader<decltype(ia)>(std::move(ia), input_format_t::msgpack).sax_parse(input_format_t::msgpack, &sdp, strict);
+        return res ? result : basic_json(value_t::discarded);
+    }
+
+    /// @brief create a JSON value from an input in MessagePack format
+    /// @sa https://json.nlohmann.me/api/basic_json/from_msgpack/
+    template<typename IteratorType>
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    static basic_json from_msgpack(IteratorType first, IteratorType last,
+                                   const bool strict = true,
+                                   const bool allow_exceptions = true)
+    {
+        basic_json result;
+        detail::json_sax_dom_parser<basic_json> sdp(result, allow_exceptions);
+        auto ia = detail::input_adapter(std::move(first), std::move(last));
+        const bool res = binary_reader<decltype(ia)>(std::move(ia), input_format_t::msgpack).sax_parse(input_format_t::msgpack, &sdp, strict);
+        return res ? result : basic_json(value_t::discarded);
+    }
+
+    template<typename T>
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    JSON_HEDLEY_DEPRECATED_FOR(3.8.0, from_msgpack(ptr, ptr + len))
+    static basic_json from_msgpack(const T* ptr, std::size_t len,
+                                   const bool strict = true,
+                                   const bool allow_exceptions = true)
+    {
+        return from_msgpack(ptr, ptr + len, strict, allow_exceptions);
+    }
+
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    JSON_HEDLEY_DEPRECATED_FOR(3.8.0, from_msgpack(ptr, ptr + len))
+    static basic_json from_msgpack(detail::span_input_adapter&& i,
+                                   const bool strict = true,
+                                   const bool allow_exceptions = true)
+    {
+        basic_json result;
+        detail::json_sax_dom_parser<basic_json> sdp(result, allow_exceptions);
+        auto ia = i.get();
+        // NOLINTNEXTLINE(hicpp-move-const-arg,performance-move-const-arg)
+        const bool res = binary_reader<decltype(ia)>(std::move(ia), input_format_t::msgpack).sax_parse(input_format_t::msgpack, &sdp, strict);
+        return res ? result : basic_json(value_t::discarded);
+    }
+
+    /// @brief create a JSON value from an input in UBJSON format
+    /// @sa https://json.nlohmann.me/api/basic_json/from_ubjson/
+    template<typename InputType>
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    static basic_json from_ubjson(InputType&& i,
+                                  const bool strict = true,
+                                  const bool allow_exceptions = true)
+    {
+        basic_json result;
+        detail::json_sax_dom_parser<basic_json> sdp(result, allow_exceptions);
+        auto ia = detail::input_adapter(std::forward<InputType>(i));
+        const bool res = binary_reader<decltype(ia)>(std::move(ia), input_format_t::ubjson).sax_parse(input_format_t::ubjson, &sdp, strict);
+        return res ? result : basic_json(value_t::discarded);
+    }
+
+    /// @brief create a JSON value from an input in UBJSON format
+    /// @sa https://json.nlohmann.me/api/basic_json/from_ubjson/
+    template<typename IteratorType>
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    static basic_json from_ubjson(IteratorType first, IteratorType last,
+                                  const bool strict = true,
+                                  const bool allow_exceptions = true)
+    {
+        basic_json result;
+        detail::json_sax_dom_parser<basic_json> sdp(result, allow_exceptions);
+        auto ia = detail::input_adapter(std::move(first), std::move(last));
+        const bool res = binary_reader<decltype(ia)>(std::move(ia), input_format_t::ubjson).sax_parse(input_format_t::ubjson, &sdp, strict);
+        return res ? result : basic_json(value_t::discarded);
+    }
+
+    template<typename T>
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    JSON_HEDLEY_DEPRECATED_FOR(3.8.0, from_ubjson(ptr, ptr + len))
+    static basic_json from_ubjson(const T* ptr, std::size_t len,
+                                  const bool strict = true,
+                                  const bool allow_exceptions = true)
+    {
+        return from_ubjson(ptr, ptr + len, strict, allow_exceptions);
+    }
+
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    JSON_HEDLEY_DEPRECATED_FOR(3.8.0, from_ubjson(ptr, ptr + len))
+    static basic_json from_ubjson(detail::span_input_adapter&& i,
+                                  const bool strict = true,
+                                  const bool allow_exceptions = true)
+    {
+        basic_json result;
+        detail::json_sax_dom_parser<basic_json> sdp(result, allow_exceptions);
+        auto ia = i.get();
+        // NOLINTNEXTLINE(hicpp-move-const-arg,performance-move-const-arg)
+        const bool res = binary_reader<decltype(ia)>(std::move(ia), input_format_t::ubjson).sax_parse(input_format_t::ubjson, &sdp, strict);
+        return res ? result : basic_json(value_t::discarded);
+    }
+
+
+    /// @brief create a JSON value from an input in BJData format
+    /// @sa https://json.nlohmann.me/api/basic_json/from_bjdata/
+    template<typename InputType>
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    static basic_json from_bjdata(InputType&& i,
+                                  const bool strict = true,
+                                  const bool allow_exceptions = true)
+    {
+        basic_json result;
+        detail::json_sax_dom_parser<basic_json> sdp(result, allow_exceptions);
+        auto ia = detail::input_adapter(std::forward<InputType>(i));
+        const bool res = binary_reader<decltype(ia)>(std::move(ia), input_format_t::bjdata).sax_parse(input_format_t::bjdata, &sdp, strict);
+        return res ? result : basic_json(value_t::discarded);
+    }
+
+    /// @brief create a JSON value from an input in BJData format
+    /// @sa https://json.nlohmann.me/api/basic_json/from_bjdata/
+    template<typename IteratorType>
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    static basic_json from_bjdata(IteratorType first, IteratorType last,
+                                  const bool strict = true,
+                                  const bool allow_exceptions = true)
+    {
+        basic_json result;
+        detail::json_sax_dom_parser<basic_json> sdp(result, allow_exceptions);
+        auto ia = detail::input_adapter(std::move(first), std::move(last));
+        const bool res = binary_reader<decltype(ia)>(std::move(ia), input_format_t::bjdata).sax_parse(input_format_t::bjdata, &sdp, strict);
+        return res ? result : basic_json(value_t::discarded);
+    }
+
+    /// @brief create a JSON value from an input in BSON format
+    /// @sa https://json.nlohmann.me/api/basic_json/from_bson/
+    template<typename InputType>
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    static basic_json from_bson(InputType&& i,
+                                const bool strict = true,
+                                const bool allow_exceptions = true)
+    {
+        basic_json result;
+        detail::json_sax_dom_parser<basic_json> sdp(result, allow_exceptions);
+        auto ia = detail::input_adapter(std::forward<InputType>(i));
+        const bool res = binary_reader<decltype(ia)>(std::move(ia), input_format_t::bson).sax_parse(input_format_t::bson, &sdp, strict);
+        return res ? result : basic_json(value_t::discarded);
+    }
+
+    /// @brief create a JSON value from an input in BSON format
+    /// @sa https://json.nlohmann.me/api/basic_json/from_bson/
+    template<typename IteratorType>
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    static basic_json from_bson(IteratorType first, IteratorType last,
+                                const bool strict = true,
+                                const bool allow_exceptions = true)
+    {
+        basic_json result;
+        detail::json_sax_dom_parser<basic_json> sdp(result, allow_exceptions);
+        auto ia = detail::input_adapter(std::move(first), std::move(last));
+        const bool res = binary_reader<decltype(ia)>(std::move(ia), input_format_t::bson).sax_parse(input_format_t::bson, &sdp, strict);
+        return res ? result : basic_json(value_t::discarded);
+    }
+
+    template<typename T>
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    JSON_HEDLEY_DEPRECATED_FOR(3.8.0, from_bson(ptr, ptr + len))
+    static basic_json from_bson(const T* ptr, std::size_t len,
+                                const bool strict = true,
+                                const bool allow_exceptions = true)
+    {
+        return from_bson(ptr, ptr + len, strict, allow_exceptions);
+    }
+
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    JSON_HEDLEY_DEPRECATED_FOR(3.8.0, from_bson(ptr, ptr + len))
+    static basic_json from_bson(detail::span_input_adapter&& i,
+                                const bool strict = true,
+                                const bool allow_exceptions = true)
+    {
+        basic_json result;
+        detail::json_sax_dom_parser<basic_json> sdp(result, allow_exceptions);
+        auto ia = i.get();
+        // NOLINTNEXTLINE(hicpp-move-const-arg,performance-move-const-arg)
+        const bool res = binary_reader<decltype(ia)>(std::move(ia), input_format_t::bson).sax_parse(input_format_t::bson, &sdp, strict);
+        return res ? result : basic_json(value_t::discarded);
+    }
+    /// @}
+
+    //////////////////////////
+    // JSON Pointer support //
+    //////////////////////////
+
+    /// @name JSON Pointer functions
+    /// @{
+
+    /// @brief access specified element via JSON Pointer
+    /// @sa https://json.nlohmann.me/api/basic_json/operator%5B%5D/
+    reference operator[](const json_pointer& ptr)
+    {
+        return ptr.get_unchecked(this);
+    }
+
+    template<typename BasicJsonType, detail::enable_if_t<detail::is_basic_json<BasicJsonType>::value, int> = 0>
+    JSON_HEDLEY_DEPRECATED_FOR(3.11.0, basic_json::json_pointer or nlohmann::json_pointer<basic_json::string_t>) // NOLINT(readability/alt_tokens)
+    reference operator[](const ::nlohmann::json_pointer<BasicJsonType>& ptr)
+    {
+        return ptr.get_unchecked(this);
+    }
+
+    /// @brief access specified element via JSON Pointer
+    /// @sa https://json.nlohmann.me/api/basic_json/operator%5B%5D/
+    const_reference operator[](const json_pointer& ptr) const
+    {
+        return ptr.get_unchecked(this);
+    }
+
+    template<typename BasicJsonType, detail::enable_if_t<detail::is_basic_json<BasicJsonType>::value, int> = 0>
+    JSON_HEDLEY_DEPRECATED_FOR(3.11.0, basic_json::json_pointer or nlohmann::json_pointer<basic_json::string_t>) // NOLINT(readability/alt_tokens)
+    const_reference operator[](const ::nlohmann::json_pointer<BasicJsonType>& ptr) const
+    {
+        return ptr.get_unchecked(this);
+    }
+
+    /// @brief access specified element via JSON Pointer
+    /// @sa https://json.nlohmann.me/api/basic_json/at/
+    reference at(const json_pointer& ptr)
+    {
+        return ptr.get_checked(this);
+    }
+
+    template<typename BasicJsonType, detail::enable_if_t<detail::is_basic_json<BasicJsonType>::value, int> = 0>
+    JSON_HEDLEY_DEPRECATED_FOR(3.11.0, basic_json::json_pointer or nlohmann::json_pointer<basic_json::string_t>) // NOLINT(readability/alt_tokens)
+    reference at(const ::nlohmann::json_pointer<BasicJsonType>& ptr)
+    {
+        return ptr.get_checked(this);
+    }
+
+    /// @brief access specified element via JSON Pointer
+    /// @sa https://json.nlohmann.me/api/basic_json/at/
+    const_reference at(const json_pointer& ptr) const
+    {
+        return ptr.get_checked(this);
+    }
+
+    template<typename BasicJsonType, detail::enable_if_t<detail::is_basic_json<BasicJsonType>::value, int> = 0>
+    JSON_HEDLEY_DEPRECATED_FOR(3.11.0, basic_json::json_pointer or nlohmann::json_pointer<basic_json::string_t>) // NOLINT(readability/alt_tokens)
+    const_reference at(const ::nlohmann::json_pointer<BasicJsonType>& ptr) const
+    {
+        return ptr.get_checked(this);
+    }
+
+    /// @brief return flattened JSON value
+    /// @sa https://json.nlohmann.me/api/basic_json/flatten/
+    basic_json flatten() const
+    {
+        basic_json result(value_t::object);
+        json_pointer::flatten("", *this, result);
+        return result;
+    }
+
+    /// @brief unflatten a previously flattened JSON value
+    /// @sa https://json.nlohmann.me/api/basic_json/unflatten/
+    basic_json unflatten() const
+    {
+        return json_pointer::unflatten(*this);
+    }
+
+    /// @}
+
+    //////////////////////////
+    // JSON Patch functions //
+    //////////////////////////
+
+    /// @name JSON Patch functions
+    /// @{
+
+    /// @brief applies a JSON patch in-place without copying the object
+    /// @sa https://json.nlohmann.me/api/basic_json/patch/
+    void patch_inplace(const basic_json& json_patch)
+    {
+        basic_json& result = *this;
+        // the valid JSON Patch operations
+        enum class patch_operations {add, remove, replace, move, copy, test, invalid};
+
+        const auto get_op = [](const std::string & op)
+        {
+            if (op == "add")
+            {
+                return patch_operations::add;
+            }
+            if (op == "remove")
+            {
+                return patch_operations::remove;
+            }
+            if (op == "replace")
+            {
+                return patch_operations::replace;
+            }
+            if (op == "move")
+            {
+                return patch_operations::move;
+            }
+            if (op == "copy")
+            {
+                return patch_operations::copy;
+            }
+            if (op == "test")
+            {
+                return patch_operations::test;
+            }
+
+            return patch_operations::invalid;
+        };
+
+        // wrapper for "add" operation; add value at ptr
+        const auto operation_add = [&result](json_pointer & ptr, basic_json val)
+        {
+            // adding to the root of the target document means replacing it
+            if (ptr.empty())
+            {
+                result = val;
+                return;
+            }
+
+            // make sure the top element of the pointer exists
+            json_pointer const top_pointer = ptr.top();
+            if (top_pointer != ptr)
+            {
+                result.at(top_pointer);
+            }
+
+            // get reference to parent of JSON pointer ptr
+            const auto last_path = ptr.back();
+            ptr.pop_back();
+            // parent must exist when performing patch add per RFC6902 specs
+            basic_json& parent = result.at(ptr);
+
+            switch (parent.m_data.m_type)
+            {
+                case value_t::null:
+                case value_t::object:
+                {
+                    // use operator[] to add value
+                    parent[last_path] = val;
+                    break;
+                }
+
+                case value_t::array:
+                {
+                    if (last_path == "-")
+                    {
+                        // special case: append to back
+                        parent.push_back(val);
+                    }
+                    else
+                    {
+                        const auto idx = json_pointer::template array_index<basic_json_t>(last_path);
+                        if (JSON_HEDLEY_UNLIKELY(idx > parent.size()))
+                        {
+                            // avoid undefined behavior
+                            JSON_THROW(out_of_range::create(401, detail::concat("array index ", std::to_string(idx), " is out of range"), &parent));
+                        }
+
+                        // default case: insert add offset
+                        parent.insert(parent.begin() + static_cast<difference_type>(idx), val);
+                    }
+                    break;
+                }
+
+                // if there exists a parent it cannot be primitive
+                case value_t::string: // LCOV_EXCL_LINE
+                case value_t::boolean: // LCOV_EXCL_LINE
+                case value_t::number_integer: // LCOV_EXCL_LINE
+                case value_t::number_unsigned: // LCOV_EXCL_LINE
+                case value_t::number_float: // LCOV_EXCL_LINE
+                case value_t::binary: // LCOV_EXCL_LINE
+                case value_t::discarded: // LCOV_EXCL_LINE
+                default:            // LCOV_EXCL_LINE
+                    JSON_ASSERT(false); // NOLINT(cert-dcl03-c,hicpp-static-assert,misc-static-assert) LCOV_EXCL_LINE
+            }
+        };
+
+        // wrapper for "remove" operation; remove value at ptr
+        const auto operation_remove = [this, &result](json_pointer & ptr)
+        {
+            // get reference to parent of JSON pointer ptr
+            const auto last_path = ptr.back();
+            ptr.pop_back();
+            basic_json& parent = result.at(ptr);
+
+            // remove child
+            if (parent.is_object())
+            {
+                // perform range check
+                auto it = parent.find(last_path);
+                if (JSON_HEDLEY_LIKELY(it != parent.end()))
+                {
+                    parent.erase(it);
+                }
+                else
+                {
+                    JSON_THROW(out_of_range::create(403, detail::concat("key '", last_path, "' not found"), this));
+                }
+            }
+            else if (parent.is_array())
+            {
+                // note erase performs range check
+                parent.erase(json_pointer::template array_index<basic_json_t>(last_path));
+            }
+        };
+
+        // type check: top level value must be an array
+        if (JSON_HEDLEY_UNLIKELY(!json_patch.is_array()))
+        {
+            JSON_THROW(parse_error::create(104, 0, "JSON patch must be an array of objects", &json_patch));
+        }
+
+        // iterate and apply the operations
+        for (const auto& val : json_patch)
+        {
+            // wrapper to get a value for an operation
+            const auto get_value = [&val](const std::string & op,
+                                          const std::string & member,
+                                          bool string_type) -> basic_json &
+            {
+                // find value
+                auto it = val.m_data.m_value.object->find(member);
+
+                // context-sensitive error message
+                const auto error_msg = (op == "op") ? "operation" : detail::concat("operation '", op, '\'');
+
+                // check if desired value is present
+                if (JSON_HEDLEY_UNLIKELY(it == val.m_data.m_value.object->end()))
+                {
+                    // NOLINTNEXTLINE(performance-inefficient-string-concatenation)
+                    JSON_THROW(parse_error::create(105, 0, detail::concat(error_msg, " must have member '", member, "'"), &val));
+                }
+
+                // check if result is of type string
+                if (JSON_HEDLEY_UNLIKELY(string_type && !it->second.is_string()))
+                {
+                    // NOLINTNEXTLINE(performance-inefficient-string-concatenation)
+                    JSON_THROW(parse_error::create(105, 0, detail::concat(error_msg, " must have string member '", member, "'"), &val));
+                }
+
+                // no error: return value
+                return it->second;
+            };
+
+            // type check: every element of the array must be an object
+            if (JSON_HEDLEY_UNLIKELY(!val.is_object()))
+            {
+                JSON_THROW(parse_error::create(104, 0, "JSON patch must be an array of objects", &val));
+            }
+
+            // collect mandatory members
+            const auto op = get_value("op", "op", true).template get<std::string>();
+            const auto path = get_value(op, "path", true).template get<std::string>();
+            json_pointer ptr(path);
+
+            switch (get_op(op))
+            {
+                case patch_operations::add:
+                {
+                    operation_add(ptr, get_value("add", "value", false));
+                    break;
+                }
+
+                case patch_operations::remove:
+                {
+                    operation_remove(ptr);
+                    break;
+                }
+
+                case patch_operations::replace:
+                {
+                    // the "path" location must exist - use at()
+                    result.at(ptr) = get_value("replace", "value", false);
+                    break;
+                }
+
+                case patch_operations::move:
+                {
+                    const auto from_path = get_value("move", "from", true).template get<std::string>();
+                    json_pointer from_ptr(from_path);
+
+                    // the "from" location must exist - use at()
+                    basic_json const v = result.at(from_ptr);
+
+                    // The move operation is functionally identical to a
+                    // "remove" operation on the "from" location, followed
+                    // immediately by an "add" operation at the target
+                    // location with the value that was just removed.
+                    operation_remove(from_ptr);
+                    operation_add(ptr, v);
+                    break;
+                }
+
+                case patch_operations::copy:
+                {
+                    const auto from_path = get_value("copy", "from", true).template get<std::string>();
+                    const json_pointer from_ptr(from_path);
+
+                    // the "from" location must exist - use at()
+                    basic_json const v = result.at(from_ptr);
+
+                    // The copy is functionally identical to an "add"
+                    // operation at the target location using the value
+                    // specified in the "from" member.
+                    operation_add(ptr, v);
+                    break;
+                }
+
+                case patch_operations::test:
+                {
+                    bool success = false;
+                    JSON_TRY
+                    {
+                        // check if "value" matches the one at "path"
+                        // the "path" location must exist - use at()
+                        success = (result.at(ptr) == get_value("test", "value", false));
+                    }
+                    JSON_INTERNAL_CATCH (out_of_range&)
+                    {
+                        // ignore out of range errors: success remains false
+                    }
+
+                    // throw an exception if test fails
+                    if (JSON_HEDLEY_UNLIKELY(!success))
+                    {
+                        JSON_THROW(other_error::create(501, detail::concat("unsuccessful: ", val.dump()), &val));
+                    }
+
+                    break;
+                }
+
+                case patch_operations::invalid:
+                default:
+                {
+                    // op must be "add", "remove", "replace", "move", "copy", or
+                    // "test"
+                    JSON_THROW(parse_error::create(105, 0, detail::concat("operation value '", op, "' is invalid"), &val));
+                }
+            }
+        }
+    }
+
+    /// @brief applies a JSON patch to a copy of the current object
+    /// @sa https://json.nlohmann.me/api/basic_json/patch/
+    basic_json patch(const basic_json& json_patch) const
+    {
+        basic_json result = *this;
+        result.patch_inplace(json_patch);
+        return result;
+    }
+
+    /// @brief creates a diff as a JSON patch
+    /// @sa https://json.nlohmann.me/api/basic_json/diff/
+    JSON_HEDLEY_WARN_UNUSED_RESULT
+    static basic_json diff(const basic_json& source, const basic_json& target,
+                           const std::string& path = "")
+    {
+        // the patch
+        basic_json result(value_t::array);
+
+        // if the values are the same, return empty patch
+        if (source == target)
+        {
+            return result;
+        }
+
+        if (source.type() != target.type())
+        {
+            // different types: replace value
+            result.push_back(
+            {
+                {"op", "replace"}, {"path", path}, {"value", target}
+            });
+            return result;
+        }
+
+        switch (source.type())
+        {
+            case value_t::array:
+            {
+                // first pass: traverse common elements
+                std::size_t i = 0;
+                while (i < source.size() && i < target.size())
+                {
+                    // recursive call to compare array values at index i
+                    auto temp_diff = diff(source[i], target[i], detail::concat(path, '/', std::to_string(i)));
+                    result.insert(result.end(), temp_diff.begin(), temp_diff.end());
+                    ++i;
+                }
+
+                // We now reached the end of at least one array
+                // in a second pass, traverse the remaining elements
+
+                // remove my remaining elements
+                const auto end_index = static_cast<difference_type>(result.size());
+                while (i < source.size())
+                {
+                    // add operations in reverse order to avoid invalid
+                    // indices
+                    result.insert(result.begin() + end_index, object(
+                    {
+                        {"op", "remove"},
+                        {"path", detail::concat(path, '/', std::to_string(i))}
+                    }));
+                    ++i;
+                }
+
+                // add other remaining elements
+                while (i < target.size())
+                {
+                    result.push_back(
+                    {
+                        {"op", "add"},
+                        {"path", detail::concat(path, "/-")},
+                        {"value", target[i]}
+                    });
+                    ++i;
+                }
+
+                break;
+            }
+
+            case value_t::object:
+            {
+                // first pass: traverse this object's elements
+                for (auto it = source.cbegin(); it != source.cend(); ++it)
+                {
+                    // escape the key name to be used in a JSON patch
+                    const auto path_key = detail::concat(path, '/', detail::escape(it.key()));
+
+                    if (target.find(it.key()) != target.end())
+                    {
+                        // recursive call to compare object values at key it
+                        auto temp_diff = diff(it.value(), target[it.key()], path_key);
+                        result.insert(result.end(), temp_diff.begin(), temp_diff.end());
+                    }
+                    else
+                    {
+                        // found a key that is not in o -> remove it
+                        result.push_back(object(
+                        {
+                            {"op", "remove"}, {"path", path_key}
+                        }));
+                    }
+                }
+
+                // second pass: traverse other object's elements
+                for (auto it = target.cbegin(); it != target.cend(); ++it)
+                {
+                    if (source.find(it.key()) == source.end())
+                    {
+                        // found a key that is not in this -> add it
+                        const auto path_key = detail::concat(path, '/', detail::escape(it.key()));
+                        result.push_back(
+                        {
+                            {"op", "add"}, {"path", path_key},
+                            {"value", it.value()}
+                        });
+                    }
+                }
+
+                break;
+            }
+
+            case value_t::null:
+            case value_t::string:
+            case value_t::boolean:
+            case value_t::number_integer:
+            case value_t::number_unsigned:
+            case value_t::number_float:
+            case value_t::binary:
+            case value_t::discarded:
+            default:
+            {
+                // both primitive type: replace value
+                result.push_back(
+                {
+                    {"op", "replace"}, {"path", path}, {"value", target}
+                });
+                break;
+            }
+        }
+
+        return result;
+    }
+    /// @}
+
+    ////////////////////////////////
+    // JSON Merge Patch functions //
+    ////////////////////////////////
+
+    /// @name JSON Merge Patch functions
+    /// @{
+
+    /// @brief applies a JSON Merge Patch
+    /// @sa https://json.nlohmann.me/api/basic_json/merge_patch/
+    void merge_patch(const basic_json& apply_patch)
+    {
+        if (apply_patch.is_object())
+        {
+            if (!is_object())
+            {
+                *this = object();
+            }
+            for (auto it = apply_patch.begin(); it != apply_patch.end(); ++it)
+            {
+                if (it.value().is_null())
+                {
+                    erase(it.key());
+                }
+                else
+                {
+                    operator[](it.key()).merge_patch(it.value());
+                }
+            }
+        }
+        else
+        {
+            *this = apply_patch;
+        }
+    }
+
+    /// @}
+};
+
+/// @brief user-defined to_string function for JSON values
+/// @sa https://json.nlohmann.me/api/basic_json/to_string/
+NLOHMANN_BASIC_JSON_TPL_DECLARATION
+std::string to_string(const NLOHMANN_BASIC_JSON_TPL& j)
+{
+    return j.dump();
+}
+
+inline namespace literals
+{
+inline namespace json_literals
+{
+
+/// @brief user-defined string literal for JSON values
+/// @sa https://json.nlohmann.me/api/basic_json/operator_literal_json/
+JSON_HEDLEY_NON_NULL(1)
+inline nlohmann::json operator "" _json(const char* s, std::size_t n)
+{
+    return nlohmann::json::parse(s, s + n);
+}
+
+/// @brief user-defined string literal for JSON pointer
+/// @sa https://json.nlohmann.me/api/basic_json/operator_literal_json_pointer/
+JSON_HEDLEY_NON_NULL(1)
+inline nlohmann::json::json_pointer operator "" _json_pointer(const char* s, std::size_t n)
+{
+    return nlohmann::json::json_pointer(std::string(s, n));
+}
+
+}  // namespace json_literals
+}  // namespace literals
+NLOHMANN_JSON_NAMESPACE_END
+
+///////////////////////
+// nonmember support //
+///////////////////////
+
+namespace std // NOLINT(cert-dcl58-cpp)
+{
+
+/// @brief hash value for JSON objects
+/// @sa https://json.nlohmann.me/api/basic_json/std_hash/
+NLOHMANN_BASIC_JSON_TPL_DECLARATION
+struct hash<nlohmann::NLOHMANN_BASIC_JSON_TPL> // NOLINT(cert-dcl58-cpp)
+{
+    std::size_t operator()(const nlohmann::NLOHMANN_BASIC_JSON_TPL& j) const
+    {
+        return nlohmann::detail::hash(j);
+    }
+};
+
+// specialization for std::less<value_t>
+template<>
+struct less< ::nlohmann::detail::value_t> // do not remove the space after '<', see https://github.com/nlohmann/json/pull/679
+{
+    /*!
+    @brief compare two value_t enum values
+    @since version 3.0.0
+    */
+    bool operator()(::nlohmann::detail::value_t lhs,
+                    ::nlohmann::detail::value_t rhs) const noexcept
+    {
+#if JSON_HAS_THREE_WAY_COMPARISON
+        return std::is_lt(lhs <=> rhs); // *NOPAD*
+#else
+        return ::nlohmann::detail::operator<(lhs, rhs);
+#endif
+    }
+};
+
+// C++20 prohibit function specialization in the std namespace.
+#ifndef JSON_HAS_CPP_20
+
+/// @brief exchanges the values of two JSON objects
+/// @sa https://json.nlohmann.me/api/basic_json/std_swap/
+NLOHMANN_BASIC_JSON_TPL_DECLARATION
+inline void swap(nlohmann::NLOHMANN_BASIC_JSON_TPL& j1, nlohmann::NLOHMANN_BASIC_JSON_TPL& j2) noexcept(  // NOLINT(readability-inconsistent-declaration-parameter-name, cert-dcl58-cpp)
+    is_nothrow_move_constructible<nlohmann::NLOHMANN_BASIC_JSON_TPL>::value&&                          // NOLINT(misc-redundant-expression)
+    is_nothrow_move_assignable<nlohmann::NLOHMANN_BASIC_JSON_TPL>::value)
+{
+    j1.swap(j2);
+}
+
+#endif
+
+}  // namespace std
+
+#if JSON_USE_GLOBAL_UDLS
+    using nlohmann::literals::json_literals::operator "" _json; // NOLINT(misc-unused-using-decls,google-global-names-in-headers)
+    using nlohmann::literals::json_literals::operator "" _json_pointer; //NOLINT(misc-unused-using-decls,google-global-names-in-headers)
+#endif
+
+// #include <nlohmann/detail/macro_unscope.hpp>
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.2
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013-2022 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+
+
+// restore clang diagnostic settings
+#if defined(__clang__)
+    #pragma clang diagnostic pop
+#endif
+
+// clean up
+#undef JSON_ASSERT
+#undef JSON_INTERNAL_CATCH
+#undef JSON_THROW
+#undef JSON_PRIVATE_UNLESS_TESTED
+#undef NLOHMANN_BASIC_JSON_TPL_DECLARATION
+#undef NLOHMANN_BASIC_JSON_TPL
+#undef JSON_EXPLICIT
+#undef NLOHMANN_CAN_CALL_STD_FUNC_IMPL
+#undef JSON_INLINE_VARIABLE
+#undef JSON_NO_UNIQUE_ADDRESS
+#undef JSON_DISABLE_ENUM_SERIALIZATION
+#undef JSON_USE_GLOBAL_UDLS
+
+#ifndef JSON_TEST_KEEP_MACROS
+    #undef JSON_CATCH
+    #undef JSON_TRY
+    #undef JSON_HAS_CPP_11
+    #undef JSON_HAS_CPP_14
+    #undef JSON_HAS_CPP_17
+    #undef JSON_HAS_CPP_20
+    #undef JSON_HAS_FILESYSTEM
+    #undef JSON_HAS_EXPERIMENTAL_FILESYSTEM
+    #undef JSON_HAS_THREE_WAY_COMPARISON
+    #undef JSON_HAS_RANGES
+    #undef JSON_USE_LEGACY_DISCARDED_VALUE_COMPARISON
+#endif
+
+// #include <nlohmann/thirdparty/hedley/hedley_undef.hpp>
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++
+// |  |  |__   |  |  | | | |  version 3.11.2
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013-2022 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+
+
+#undef JSON_HEDLEY_ALWAYS_INLINE
+#undef JSON_HEDLEY_ARM_VERSION
+#undef JSON_HEDLEY_ARM_VERSION_CHECK
+#undef JSON_HEDLEY_ARRAY_PARAM
+#undef JSON_HEDLEY_ASSUME
+#undef JSON_HEDLEY_BEGIN_C_DECLS
+#undef JSON_HEDLEY_CLANG_HAS_ATTRIBUTE
+#undef JSON_HEDLEY_CLANG_HAS_BUILTIN
+#undef JSON_HEDLEY_CLANG_HAS_CPP_ATTRIBUTE
+#undef JSON_HEDLEY_CLANG_HAS_DECLSPEC_DECLSPEC_ATTRIBUTE
+#undef JSON_HEDLEY_CLANG_HAS_EXTENSION
+#undef JSON_HEDLEY_CLANG_HAS_FEATURE
+#undef JSON_HEDLEY_CLANG_HAS_WARNING
+#undef JSON_HEDLEY_COMPCERT_VERSION
+#undef JSON_HEDLEY_COMPCERT_VERSION_CHECK
+#undef JSON_HEDLEY_CONCAT
+#undef JSON_HEDLEY_CONCAT3
+#undef JSON_HEDLEY_CONCAT3_EX
+#undef JSON_HEDLEY_CONCAT_EX
+#undef JSON_HEDLEY_CONST
+#undef JSON_HEDLEY_CONSTEXPR
+#undef JSON_HEDLEY_CONST_CAST
+#undef JSON_HEDLEY_CPP_CAST
+#undef JSON_HEDLEY_CRAY_VERSION
+#undef JSON_HEDLEY_CRAY_VERSION_CHECK
+#undef JSON_HEDLEY_C_DECL
+#undef JSON_HEDLEY_DEPRECATED
+#undef JSON_HEDLEY_DEPRECATED_FOR
+#undef JSON_HEDLEY_DIAGNOSTIC_DISABLE_CAST_QUAL
+#undef JSON_HEDLEY_DIAGNOSTIC_DISABLE_CPP98_COMPAT_WRAP_
+#undef JSON_HEDLEY_DIAGNOSTIC_DISABLE_DEPRECATED
+#undef JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_CPP_ATTRIBUTES
+#undef JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_PRAGMAS
+#undef JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNUSED_FUNCTION
+#undef JSON_HEDLEY_DIAGNOSTIC_POP
+#undef JSON_HEDLEY_DIAGNOSTIC_PUSH
+#undef JSON_HEDLEY_DMC_VERSION
+#undef JSON_HEDLEY_DMC_VERSION_CHECK
+#undef JSON_HEDLEY_EMPTY_BASES
+#undef JSON_HEDLEY_EMSCRIPTEN_VERSION
+#undef JSON_HEDLEY_EMSCRIPTEN_VERSION_CHECK
+#undef JSON_HEDLEY_END_C_DECLS
+#undef JSON_HEDLEY_FLAGS
+#undef JSON_HEDLEY_FLAGS_CAST
+#undef JSON_HEDLEY_GCC_HAS_ATTRIBUTE
+#undef JSON_HEDLEY_GCC_HAS_BUILTIN
+#undef JSON_HEDLEY_GCC_HAS_CPP_ATTRIBUTE
+#undef JSON_HEDLEY_GCC_HAS_DECLSPEC_ATTRIBUTE
+#undef JSON_HEDLEY_GCC_HAS_EXTENSION
+#undef JSON_HEDLEY_GCC_HAS_FEATURE
+#undef JSON_HEDLEY_GCC_HAS_WARNING
+#undef JSON_HEDLEY_GCC_NOT_CLANG_VERSION_CHECK
+#undef JSON_HEDLEY_GCC_VERSION
+#undef JSON_HEDLEY_GCC_VERSION_CHECK
+#undef JSON_HEDLEY_GNUC_HAS_ATTRIBUTE
+#undef JSON_HEDLEY_GNUC_HAS_BUILTIN
+#undef JSON_HEDLEY_GNUC_HAS_CPP_ATTRIBUTE
+#undef JSON_HEDLEY_GNUC_HAS_DECLSPEC_ATTRIBUTE
+#undef JSON_HEDLEY_GNUC_HAS_EXTENSION
+#undef JSON_HEDLEY_GNUC_HAS_FEATURE
+#undef JSON_HEDLEY_GNUC_HAS_WARNING
+#undef JSON_HEDLEY_GNUC_VERSION
+#undef JSON_HEDLEY_GNUC_VERSION_CHECK
+#undef JSON_HEDLEY_HAS_ATTRIBUTE
+#undef JSON_HEDLEY_HAS_BUILTIN
+#undef JSON_HEDLEY_HAS_CPP_ATTRIBUTE
+#undef JSON_HEDLEY_HAS_CPP_ATTRIBUTE_NS
+#undef JSON_HEDLEY_HAS_DECLSPEC_ATTRIBUTE
+#undef JSON_HEDLEY_HAS_EXTENSION
+#undef JSON_HEDLEY_HAS_FEATURE
+#undef JSON_HEDLEY_HAS_WARNING
+#undef JSON_HEDLEY_IAR_VERSION
+#undef JSON_HEDLEY_IAR_VERSION_CHECK
+#undef JSON_HEDLEY_IBM_VERSION
+#undef JSON_HEDLEY_IBM_VERSION_CHECK
+#undef JSON_HEDLEY_IMPORT
+#undef JSON_HEDLEY_INLINE
+#undef JSON_HEDLEY_INTEL_CL_VERSION
+#undef JSON_HEDLEY_INTEL_CL_VERSION_CHECK
+#undef JSON_HEDLEY_INTEL_VERSION
+#undef JSON_HEDLEY_INTEL_VERSION_CHECK
+#undef JSON_HEDLEY_IS_CONSTANT
+#undef JSON_HEDLEY_IS_CONSTEXPR_
+#undef JSON_HEDLEY_LIKELY
+#undef JSON_HEDLEY_MALLOC
+#undef JSON_HEDLEY_MCST_LCC_VERSION
+#undef JSON_HEDLEY_MCST_LCC_VERSION_CHECK
+#undef JSON_HEDLEY_MESSAGE
+#undef JSON_HEDLEY_MSVC_VERSION
+#undef JSON_HEDLEY_MSVC_VERSION_CHECK
+#undef JSON_HEDLEY_NEVER_INLINE
+#undef JSON_HEDLEY_NON_NULL
+#undef JSON_HEDLEY_NO_ESCAPE
+#undef JSON_HEDLEY_NO_RETURN
+#undef JSON_HEDLEY_NO_THROW
+#undef JSON_HEDLEY_NULL
+#undef JSON_HEDLEY_PELLES_VERSION
+#undef JSON_HEDLEY_PELLES_VERSION_CHECK
+#undef JSON_HEDLEY_PGI_VERSION
+#undef JSON_HEDLEY_PGI_VERSION_CHECK
+#undef JSON_HEDLEY_PREDICT
+#undef JSON_HEDLEY_PRINTF_FORMAT
+#undef JSON_HEDLEY_PRIVATE
+#undef JSON_HEDLEY_PUBLIC
+#undef JSON_HEDLEY_PURE
+#undef JSON_HEDLEY_REINTERPRET_CAST
+#undef JSON_HEDLEY_REQUIRE
+#undef JSON_HEDLEY_REQUIRE_CONSTEXPR
+#undef JSON_HEDLEY_REQUIRE_MSG
+#undef JSON_HEDLEY_RESTRICT
+#undef JSON_HEDLEY_RETURNS_NON_NULL
+#undef JSON_HEDLEY_SENTINEL
+#undef JSON_HEDLEY_STATIC_ASSERT
+#undef JSON_HEDLEY_STATIC_CAST
+#undef JSON_HEDLEY_STRINGIFY
+#undef JSON_HEDLEY_STRINGIFY_EX
+#undef JSON_HEDLEY_SUNPRO_VERSION
+#undef JSON_HEDLEY_SUNPRO_VERSION_CHECK
+#undef JSON_HEDLEY_TINYC_VERSION
+#undef JSON_HEDLEY_TINYC_VERSION_CHECK
+#undef JSON_HEDLEY_TI_ARMCL_VERSION
+#undef JSON_HEDLEY_TI_ARMCL_VERSION_CHECK
+#undef JSON_HEDLEY_TI_CL2000_VERSION
+#undef JSON_HEDLEY_TI_CL2000_VERSION_CHECK
+#undef JSON_HEDLEY_TI_CL430_VERSION
+#undef JSON_HEDLEY_TI_CL430_VERSION_CHECK
+#undef JSON_HEDLEY_TI_CL6X_VERSION
+#undef JSON_HEDLEY_TI_CL6X_VERSION_CHECK
+#undef JSON_HEDLEY_TI_CL7X_VERSION
+#undef JSON_HEDLEY_TI_CL7X_VERSION_CHECK
+#undef JSON_HEDLEY_TI_CLPRU_VERSION
+#undef JSON_HEDLEY_TI_CLPRU_VERSION_CHECK
+#undef JSON_HEDLEY_TI_VERSION
+#undef JSON_HEDLEY_TI_VERSION_CHECK
+#undef JSON_HEDLEY_UNAVAILABLE
+#undef JSON_HEDLEY_UNLIKELY
+#undef JSON_HEDLEY_UNPREDICTABLE
+#undef JSON_HEDLEY_UNREACHABLE
+#undef JSON_HEDLEY_UNREACHABLE_RETURN
+#undef JSON_HEDLEY_VERSION
+#undef JSON_HEDLEY_VERSION_DECODE_MAJOR
+#undef JSON_HEDLEY_VERSION_DECODE_MINOR
+#undef JSON_HEDLEY_VERSION_DECODE_REVISION
+#undef JSON_HEDLEY_VERSION_ENCODE
+#undef JSON_HEDLEY_WARNING
+#undef JSON_HEDLEY_WARN_UNUSED_RESULT
+#undef JSON_HEDLEY_WARN_UNUSED_RESULT_MSG
+#undef JSON_HEDLEY_FALL_THROUGH
+
+
+
+#endif  // INCLUDE_NLOHMANN_JSON_HPP_
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/attachment.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/attachment.cpp
index 9cfeff5c..58e9bd58 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/attachment.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/attachment.cpp
@@ -32,4 +32,18 @@ operator<<(std::ostream& os, const attachment& msg)
     return os;
 }
 
+void to_json(json& j, const attachment& m)
+{
+    j = json{
+        { "body", m.body },
+        { "content_encoding", m.content_encoding },
+        { "file_name", m.file_name },
+        { "media_type", m.media_type },
+        { "source", m.source },
+        { "test_case_started_id", m.test_case_started_id },
+        { "test_step_id", m.test_step_id },
+        { "url", m.url }
+    };
+}
+
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/background.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/background.cpp
index 8b54b1d0..0c889587 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/background.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/background.cpp
@@ -30,4 +30,16 @@ operator<<(std::ostream& os, const background& msg)
     return os;
 }
 
+void to_json(json& j, const background& m)
+{
+    j = json{
+        { "location", m.location },
+        { "keyword", m.keyword },
+        { "name", m.name },
+        { "description", m.description },
+        { "steps", m.steps },
+        { "id", m.id }
+    };
+}
+
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/ci.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/ci.cpp
index fef2d216..78089e58 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/ci.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/ci.cpp
@@ -28,4 +28,14 @@ operator<<(std::ostream& os, const ci& msg)
     return os;
 }
 
+void to_json(json& j, const ci& m)
+{
+    j = json{
+        { "name", m.name },
+        { "url", m.url },
+        { "build_number", m.build_number },
+        { "git", m.git }
+    };
+}
+
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/comment.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/comment.cpp
index 2a7431bf..77939091 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/comment.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/comment.cpp
@@ -26,4 +26,12 @@ operator<<(std::ostream& os, const comment& msg)
     return os;
 }
 
+void to_json(json& j, const comment& m)
+{
+    j = json{
+        { "location", m.location },
+        { "text", m.text }
+    };
+}
+
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/data_table.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/data_table.cpp
index f268e05a..7f79ef01 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/data_table.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/data_table.cpp
@@ -26,4 +26,12 @@ operator<<(std::ostream& os, const data_table& msg)
     return os;
 }
 
+void to_json(json& j, const data_table& m)
+{
+    j = json{
+        { "location", m.location },
+        { "rows", m.rows }
+    };
+}
+
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/doc_string.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/doc_string.cpp
index 008c2ff9..cc87d6a5 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/doc_string.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/doc_string.cpp
@@ -28,4 +28,14 @@ operator<<(std::ostream& os, const doc_string& msg)
     return os;
 }
 
+void to_json(json& j, const doc_string& m)
+{
+    j = json{
+        { "location", m.location },
+        { "media_type", m.media_type },
+        { "content", m.content },
+        { "delimiter", m.delimiter }
+    };
+}
+
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/duration.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/duration.cpp
index b07bbcf3..ce434cc0 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/duration.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/duration.cpp
@@ -26,4 +26,12 @@ operator<<(std::ostream& os, const duration& msg)
     return os;
 }
 
+void to_json(json& j, const duration& m)
+{
+    j = json{
+        { "seconds", m.seconds },
+        { "nanos", m.nanos }
+    };
+}
+
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/envelope.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/envelope.cpp
index dfb6636a..26b29244 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/envelope.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/envelope.cpp
@@ -41,4 +41,27 @@ operator<<(std::ostream& os, const envelope& msg)
     return os;
 }
 
+void to_json(json& j, const envelope& m)
+{
+    j = json{
+        { "attachment", m.attachment },
+        { "gherkin_document", m.gherkin_document },
+        { "hook", m.hook },
+        { "meta", m.meta },
+        { "parameter_type", m.parameter_type },
+        { "parse_error", m.parse_error },
+        { "pickle", m.pickle },
+        { "source", m.source },
+        { "step_definition", m.step_definition },
+        { "test_case", m.test_case },
+        { "test_case_finished", m.test_case_finished },
+        { "test_case_started", m.test_case_started },
+        { "test_run_finished", m.test_run_finished },
+        { "test_run_started", m.test_run_started },
+        { "test_step_finished", m.test_step_finished },
+        { "test_step_started", m.test_step_started },
+        { "undefined_parameter_type", m.undefined_parameter_type }
+    };
+}
+
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/examples.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/examples.cpp
index e4e0e119..ba425938 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/examples.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/examples.cpp
@@ -32,4 +32,18 @@ operator<<(std::ostream& os, const examples& msg)
     return os;
 }
 
+void to_json(json& j, const examples& m)
+{
+    j = json{
+        { "location", m.location },
+        { "tags", m.tags },
+        { "keyword", m.keyword },
+        { "name", m.name },
+        { "description", m.description },
+        { "table_header", m.table_header },
+        { "table_body", m.table_body },
+        { "id", m.id }
+    };
+}
+
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/exception.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/exception.cpp
index dadc89ec..c04a0fe8 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/exception.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/exception.cpp
@@ -26,4 +26,12 @@ operator<<(std::ostream& os, const exception& msg)
     return os;
 }
 
+void to_json(json& j, const exception& m)
+{
+    j = json{
+        { "type", m.type },
+        { "message", m.message }
+    };
+}
+
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/feature.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/feature.cpp
index 61764165..c9204476 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/feature.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/feature.cpp
@@ -31,4 +31,17 @@ operator<<(std::ostream& os, const feature& msg)
     return os;
 }
 
+void to_json(json& j, const feature& m)
+{
+    j = json{
+        { "location", m.location },
+        { "tags", m.tags },
+        { "language", m.language },
+        { "keyword", m.keyword },
+        { "name", m.name },
+        { "description", m.description },
+        { "children", m.children }
+    };
+}
+
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/feature_child.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/feature_child.cpp
index 7830f4f7..00106da1 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/feature_child.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/feature_child.cpp
@@ -27,4 +27,13 @@ operator<<(std::ostream& os, const feature_child& msg)
     return os;
 }
 
+void to_json(json& j, const feature_child& m)
+{
+    j = json{
+        { "rule", m.rule },
+        { "background", m.background },
+        { "scenario", m.scenario }
+    };
+}
+
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/gherkin_document.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/gherkin_document.cpp
index b0c5f45f..bbf0a374 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/gherkin_document.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/gherkin_document.cpp
@@ -27,4 +27,13 @@ operator<<(std::ostream& os, const gherkin_document& msg)
     return os;
 }
 
+void to_json(json& j, const gherkin_document& m)
+{
+    j = json{
+        { "uri", m.uri },
+        { "feature", m.feature },
+        { "comments", m.comments }
+    };
+}
+
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/git.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/git.cpp
index 77788f60..58dac667 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/git.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/git.cpp
@@ -28,4 +28,14 @@ operator<<(std::ostream& os, const git& msg)
     return os;
 }
 
+void to_json(json& j, const git& m)
+{
+    j = json{
+        { "remote", m.remote },
+        { "revision", m.revision },
+        { "branch", m.branch },
+        { "tag", m.tag }
+    };
+}
+
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/group.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/group.cpp
index 2ef52c2a..c6809211 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/group.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/group.cpp
@@ -27,4 +27,13 @@ operator<<(std::ostream& os, const group& msg)
     return os;
 }
 
+void to_json(json& j, const group& m)
+{
+    j = json{
+        { "children", m.children },
+        { "start", m.start },
+        { "value", m.value }
+    };
+}
+
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/hook.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/hook.cpp
index 2af2513c..aac8d743 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/hook.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/hook.cpp
@@ -28,4 +28,14 @@ operator<<(std::ostream& os, const hook& msg)
     return os;
 }
 
+void to_json(json& j, const hook& m)
+{
+    j = json{
+        { "id", m.id },
+        { "name", m.name },
+        { "source_reference", m.source_reference },
+        { "tag_expression", m.tag_expression }
+    };
+}
+
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/java_method.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/java_method.cpp
index bc256511..39283fbb 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/java_method.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/java_method.cpp
@@ -27,4 +27,13 @@ operator<<(std::ostream& os, const java_method& msg)
     return os;
 }
 
+void to_json(json& j, const java_method& m)
+{
+    j = json{
+        { "class_name", m.class_name },
+        { "method_name", m.method_name },
+        { "method_parameter_types", m.method_parameter_types }
+    };
+}
+
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/java_stack_trace_element.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/java_stack_trace_element.cpp
index 8b133e47..a9792b19 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/java_stack_trace_element.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/java_stack_trace_element.cpp
@@ -27,4 +27,13 @@ operator<<(std::ostream& os, const java_stack_trace_element& msg)
     return os;
 }
 
+void to_json(json& j, const java_stack_trace_element& m)
+{
+    j = json{
+        { "class_name", m.class_name },
+        { "file_name", m.file_name },
+        { "method_name", m.method_name }
+    };
+}
+
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/location.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/location.cpp
index 108fb7f1..cdee8e5b 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/location.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/location.cpp
@@ -26,4 +26,12 @@ operator<<(std::ostream& os, const location& msg)
     return os;
 }
 
+void to_json(json& j, const location& m)
+{
+    j = json{
+        { "line", m.line },
+        { "column", m.column }
+    };
+}
+
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/meta.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/meta.cpp
index fd8ecebd..edddb266 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/meta.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/meta.cpp
@@ -30,4 +30,16 @@ operator<<(std::ostream& os, const meta& msg)
     return os;
 }
 
+void to_json(json& j, const meta& m)
+{
+    j = json{
+        { "protocol_version", m.protocol_version },
+        { "implementation", m.implementation },
+        { "runtime", m.runtime },
+        { "os", m.os },
+        { "cpu", m.cpu },
+        { "ci", m.ci }
+    };
+}
+
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/parameter_type.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/parameter_type.cpp
index 50e48022..d3846948 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/parameter_type.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/parameter_type.cpp
@@ -30,4 +30,16 @@ operator<<(std::ostream& os, const parameter_type& msg)
     return os;
 }
 
+void to_json(json& j, const parameter_type& m)
+{
+    j = json{
+        { "name", m.name },
+        { "regular_expressions", m.regular_expressions },
+        { "prefer_for_regular_expression_match", m.prefer_for_regular_expression_match },
+        { "use_for_snippets", m.use_for_snippets },
+        { "id", m.id },
+        { "source_reference", m.source_reference }
+    };
+}
+
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/parse_error.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/parse_error.cpp
index 00e11cdb..c73f49fc 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/parse_error.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/parse_error.cpp
@@ -26,4 +26,12 @@ operator<<(std::ostream& os, const parse_error& msg)
     return os;
 }
 
+void to_json(json& j, const parse_error& m)
+{
+    j = json{
+        { "source", m.source },
+        { "message", m.message }
+    };
+}
+
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/pickle.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/pickle.cpp
index d688fe23..d6c3b9e1 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/pickle.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/pickle.cpp
@@ -31,4 +31,17 @@ operator<<(std::ostream& os, const pickle& msg)
     return os;
 }
 
+void to_json(json& j, const pickle& m)
+{
+    j = json{
+        { "id", m.id },
+        { "uri", m.uri },
+        { "name", m.name },
+        { "language", m.language },
+        { "steps", m.steps },
+        { "tags", m.tags },
+        { "ast_node_ids", m.ast_node_ids }
+    };
+}
+
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_doc_string.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_doc_string.cpp
index c097930e..265f3728 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_doc_string.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_doc_string.cpp
@@ -26,4 +26,12 @@ operator<<(std::ostream& os, const pickle_doc_string& msg)
     return os;
 }
 
+void to_json(json& j, const pickle_doc_string& m)
+{
+    j = json{
+        { "media_type", m.media_type },
+        { "content", m.content }
+    };
+}
+
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_step.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_step.cpp
index bb591c1e..8d29245e 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_step.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_step.cpp
@@ -29,4 +29,15 @@ operator<<(std::ostream& os, const pickle_step& msg)
     return os;
 }
 
+void to_json(json& j, const pickle_step& m)
+{
+    j = json{
+        { "argument", m.argument },
+        { "ast_node_ids", m.ast_node_ids },
+        { "id", m.id },
+        { "type", m.type },
+        { "text", m.text }
+    };
+}
+
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_step_argument.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_step_argument.cpp
index 632c0a82..2e080ec1 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_step_argument.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_step_argument.cpp
@@ -26,4 +26,12 @@ operator<<(std::ostream& os, const pickle_step_argument& msg)
     return os;
 }
 
+void to_json(json& j, const pickle_step_argument& m)
+{
+    j = json{
+        { "doc_string", m.doc_string },
+        { "data_table", m.data_table }
+    };
+}
+
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_table.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_table.cpp
index 3bbbb441..5940b283 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_table.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_table.cpp
@@ -25,4 +25,11 @@ operator<<(std::ostream& os, const pickle_table& msg)
     return os;
 }
 
+void to_json(json& j, const pickle_table& m)
+{
+    j = json{
+        { "rows", m.rows }
+    };
+}
+
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_table_cell.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_table_cell.cpp
index 1657f4ad..faa73f03 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_table_cell.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_table_cell.cpp
@@ -25,4 +25,11 @@ operator<<(std::ostream& os, const pickle_table_cell& msg)
     return os;
 }
 
+void to_json(json& j, const pickle_table_cell& m)
+{
+    j = json{
+        { "value", m.value }
+    };
+}
+
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_table_row.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_table_row.cpp
index 28780120..4175b163 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_table_row.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_table_row.cpp
@@ -25,4 +25,11 @@ operator<<(std::ostream& os, const pickle_table_row& msg)
     return os;
 }
 
+void to_json(json& j, const pickle_table_row& m)
+{
+    j = json{
+        { "cells", m.cells }
+    };
+}
+
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_tag.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_tag.cpp
index f7e27668..c095c5e1 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_tag.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_tag.cpp
@@ -26,4 +26,12 @@ operator<<(std::ostream& os, const pickle_tag& msg)
     return os;
 }
 
+void to_json(json& j, const pickle_tag& m)
+{
+    j = json{
+        { "name", m.name },
+        { "ast_node_id", m.ast_node_id }
+    };
+}
+
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/product.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/product.cpp
index 87bfc578..5ef33e72 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/product.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/product.cpp
@@ -26,4 +26,12 @@ operator<<(std::ostream& os, const product& msg)
     return os;
 }
 
+void to_json(json& j, const product& m)
+{
+    j = json{
+        { "name", m.name },
+        { "version", m.version }
+    };
+}
+
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/rule.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/rule.cpp
index 19e251f5..2ef5a32c 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/rule.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/rule.cpp
@@ -31,4 +31,17 @@ operator<<(std::ostream& os, const rule& msg)
     return os;
 }
 
+void to_json(json& j, const rule& m)
+{
+    j = json{
+        { "location", m.location },
+        { "tags", m.tags },
+        { "keyword", m.keyword },
+        { "name", m.name },
+        { "description", m.description },
+        { "children", m.children },
+        { "id", m.id }
+    };
+}
+
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/rule_child.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/rule_child.cpp
index 0d34afc3..b309cff1 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/rule_child.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/rule_child.cpp
@@ -26,4 +26,12 @@ operator<<(std::ostream& os, const rule_child& msg)
     return os;
 }
 
+void to_json(json& j, const rule_child& m)
+{
+    j = json{
+        { "background", m.background },
+        { "scenario", m.scenario }
+    };
+}
+
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/scenario.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/scenario.cpp
index 02d4486a..6b95f43d 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/scenario.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/scenario.cpp
@@ -32,4 +32,18 @@ operator<<(std::ostream& os, const scenario& msg)
     return os;
 }
 
+void to_json(json& j, const scenario& m)
+{
+    j = json{
+        { "location", m.location },
+        { "tags", m.tags },
+        { "keyword", m.keyword },
+        { "name", m.name },
+        { "description", m.description },
+        { "steps", m.steps },
+        { "examples", m.examples },
+        { "id", m.id }
+    };
+}
+
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/source.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/source.cpp
index 61504e13..bd2ff5fb 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/source.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/source.cpp
@@ -27,4 +27,13 @@ operator<<(std::ostream& os, const source& msg)
     return os;
 }
 
+void to_json(json& j, const source& m)
+{
+    j = json{
+        { "uri", m.uri },
+        { "data", m.data },
+        { "media_type", m.media_type }
+    };
+}
+
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/source_reference.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/source_reference.cpp
index 6d06acd6..84bfaa03 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/source_reference.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/source_reference.cpp
@@ -28,4 +28,14 @@ operator<<(std::ostream& os, const source_reference& msg)
     return os;
 }
 
+void to_json(json& j, const source_reference& m)
+{
+    j = json{
+        { "uri", m.uri },
+        { "java_method", m.java_method },
+        { "java_stack_trace_element", m.java_stack_trace_element },
+        { "location", m.location }
+    };
+}
+
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/step.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/step.cpp
index 72d99336..ce81ff3e 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/step.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/step.cpp
@@ -31,4 +31,17 @@ operator<<(std::ostream& os, const step& msg)
     return os;
 }
 
+void to_json(json& j, const step& m)
+{
+    j = json{
+        { "location", m.location },
+        { "keyword", m.keyword },
+        { "keyword_type", m.keyword_type },
+        { "text", m.text },
+        { "doc_string", m.doc_string },
+        { "data_table", m.data_table },
+        { "id", m.id }
+    };
+}
+
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/step_definition.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/step_definition.cpp
index 23cf9b72..94ac9d6c 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/step_definition.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/step_definition.cpp
@@ -27,4 +27,13 @@ operator<<(std::ostream& os, const step_definition& msg)
     return os;
 }
 
+void to_json(json& j, const step_definition& m)
+{
+    j = json{
+        { "id", m.id },
+        { "pattern", m.pattern },
+        { "source_reference", m.source_reference }
+    };
+}
+
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/step_definition_pattern.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/step_definition_pattern.cpp
index 69a0b54e..3f8d88b3 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/step_definition_pattern.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/step_definition_pattern.cpp
@@ -26,4 +26,12 @@ operator<<(std::ostream& os, const step_definition_pattern& msg)
     return os;
 }
 
+void to_json(json& j, const step_definition_pattern& m)
+{
+    j = json{
+        { "source", m.source },
+        { "type", m.type }
+    };
+}
+
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/step_match_argument.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/step_match_argument.cpp
index 09ae706e..292b5a99 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/step_match_argument.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/step_match_argument.cpp
@@ -26,4 +26,12 @@ operator<<(std::ostream& os, const step_match_argument& msg)
     return os;
 }
 
+void to_json(json& j, const step_match_argument& m)
+{
+    j = json{
+        { "group", m.group },
+        { "parameter_type_name", m.parameter_type_name }
+    };
+}
+
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/step_match_arguments_list.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/step_match_arguments_list.cpp
index 68b6bdec..d13f10ce 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/step_match_arguments_list.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/step_match_arguments_list.cpp
@@ -25,4 +25,11 @@ operator<<(std::ostream& os, const step_match_arguments_list& msg)
     return os;
 }
 
+void to_json(json& j, const step_match_arguments_list& m)
+{
+    j = json{
+        { "step_match_arguments", m.step_match_arguments }
+    };
+}
+
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/table_cell.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/table_cell.cpp
index 7f13fe9d..c43b6cd7 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/table_cell.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/table_cell.cpp
@@ -26,4 +26,12 @@ operator<<(std::ostream& os, const table_cell& msg)
     return os;
 }
 
+void to_json(json& j, const table_cell& m)
+{
+    j = json{
+        { "location", m.location },
+        { "value", m.value }
+    };
+}
+
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/table_row.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/table_row.cpp
index 6ceffa12..235b6cf1 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/table_row.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/table_row.cpp
@@ -27,4 +27,13 @@ operator<<(std::ostream& os, const table_row& msg)
     return os;
 }
 
+void to_json(json& j, const table_row& m)
+{
+    j = json{
+        { "location", m.location },
+        { "cells", m.cells },
+        { "id", m.id }
+    };
+}
+
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/tag.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/tag.cpp
index b577b3db..cec28510 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/tag.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/tag.cpp
@@ -27,4 +27,13 @@ operator<<(std::ostream& os, const tag& msg)
     return os;
 }
 
+void to_json(json& j, const tag& m)
+{
+    j = json{
+        { "location", m.location },
+        { "name", m.name },
+        { "id", m.id }
+    };
+}
+
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/test_case.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/test_case.cpp
index 6b6222d0..b1c5d9f2 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/test_case.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/test_case.cpp
@@ -27,4 +27,13 @@ operator<<(std::ostream& os, const test_case& msg)
     return os;
 }
 
+void to_json(json& j, const test_case& m)
+{
+    j = json{
+        { "id", m.id },
+        { "pickle_id", m.pickle_id },
+        { "test_steps", m.test_steps }
+    };
+}
+
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/test_case_finished.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/test_case_finished.cpp
index 77aba079..6c4fa254 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/test_case_finished.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/test_case_finished.cpp
@@ -27,4 +27,13 @@ operator<<(std::ostream& os, const test_case_finished& msg)
     return os;
 }
 
+void to_json(json& j, const test_case_finished& m)
+{
+    j = json{
+        { "test_case_started_id", m.test_case_started_id },
+        { "timestamp", m.timestamp },
+        { "will_be_retried", m.will_be_retried }
+    };
+}
+
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/test_case_started.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/test_case_started.cpp
index 0f6d98bf..58e2a532 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/test_case_started.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/test_case_started.cpp
@@ -29,4 +29,15 @@ operator<<(std::ostream& os, const test_case_started& msg)
     return os;
 }
 
+void to_json(json& j, const test_case_started& m)
+{
+    j = json{
+        { "attempt", m.attempt },
+        { "id", m.id },
+        { "test_case_id", m.test_case_id },
+        { "worker_id", m.worker_id },
+        { "timestamp", m.timestamp }
+    };
+}
+
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/test_run_finished.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/test_run_finished.cpp
index 8cdcff29..04808516 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/test_run_finished.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/test_run_finished.cpp
@@ -28,4 +28,14 @@ operator<<(std::ostream& os, const test_run_finished& msg)
     return os;
 }
 
+void to_json(json& j, const test_run_finished& m)
+{
+    j = json{
+        { "message", m.message },
+        { "success", m.success },
+        { "timestamp", m.timestamp },
+        { "exception", m.exception }
+    };
+}
+
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/test_run_started.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/test_run_started.cpp
index b33f3bee..ecca4bec 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/test_run_started.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/test_run_started.cpp
@@ -25,4 +25,11 @@ operator<<(std::ostream& os, const test_run_started& msg)
     return os;
 }
 
+void to_json(json& j, const test_run_started& m)
+{
+    j = json{
+        { "timestamp", m.timestamp }
+    };
+}
+
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/test_step.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/test_step.cpp
index 587480d5..1e6b29ec 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/test_step.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/test_step.cpp
@@ -29,4 +29,15 @@ operator<<(std::ostream& os, const test_step& msg)
     return os;
 }
 
+void to_json(json& j, const test_step& m)
+{
+    j = json{
+        { "hook_id", m.hook_id },
+        { "id", m.id },
+        { "pickle_step_id", m.pickle_step_id },
+        { "step_definition_ids", m.step_definition_ids },
+        { "step_match_arguments_lists", m.step_match_arguments_lists }
+    };
+}
+
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/test_step_finished.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/test_step_finished.cpp
index b1cab6b1..82fcea82 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/test_step_finished.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/test_step_finished.cpp
@@ -28,4 +28,14 @@ operator<<(std::ostream& os, const test_step_finished& msg)
     return os;
 }
 
+void to_json(json& j, const test_step_finished& m)
+{
+    j = json{
+        { "test_case_started_id", m.test_case_started_id },
+        { "test_step_id", m.test_step_id },
+        { "test_step_result", m.test_step_result },
+        { "timestamp", m.timestamp }
+    };
+}
+
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/test_step_result.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/test_step_result.cpp
index 885f23c9..4fc7f7a9 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/test_step_result.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/test_step_result.cpp
@@ -28,4 +28,14 @@ operator<<(std::ostream& os, const test_step_result& msg)
     return os;
 }
 
+void to_json(json& j, const test_step_result& m)
+{
+    j = json{
+        { "duration", m.duration },
+        { "message", m.message },
+        { "status", m.status },
+        { "exception", m.exception }
+    };
+}
+
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/test_step_started.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/test_step_started.cpp
index 885c0286..a801c9d0 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/test_step_started.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/test_step_started.cpp
@@ -27,4 +27,13 @@ operator<<(std::ostream& os, const test_step_started& msg)
     return os;
 }
 
+void to_json(json& j, const test_step_started& m)
+{
+    j = json{
+        { "test_case_started_id", m.test_case_started_id },
+        { "test_step_id", m.test_step_id },
+        { "timestamp", m.timestamp }
+    };
+}
+
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/timestamp.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/timestamp.cpp
index 9c6dba60..8e6d4bee 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/timestamp.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/timestamp.cpp
@@ -26,4 +26,12 @@ operator<<(std::ostream& os, const timestamp& msg)
     return os;
 }
 
+void to_json(json& j, const timestamp& m)
+{
+    j = json{
+        { "seconds", m.seconds },
+        { "nanos", m.nanos }
+    };
+}
+
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/undefined_parameter_type.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/undefined_parameter_type.cpp
index d068c70a..6ef96834 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/undefined_parameter_type.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/undefined_parameter_type.cpp
@@ -26,4 +26,12 @@ operator<<(std::ostream& os, const undefined_parameter_type& msg)
     return os;
 }
 
+void to_json(json& j, const undefined_parameter_type& m)
+{
+    j = json{
+        { "expression", m.expression },
+        { "name", m.name }
+    };
+}
+
 }
diff --git a/jsonschema/scripts/templates/cpp.hpp.erb b/jsonschema/scripts/templates/cpp.hpp.erb
index 0d5d0a1e..08d680e1 100644
--- a/jsonschema/scripts/templates/cpp.hpp.erb
+++ b/jsonschema/scripts/templates/cpp.hpp.erb
@@ -5,6 +5,8 @@
 
 #include <vector>
 #include <string>
+
+#include <nlohmann/json.hpp>
 <%-
     incs = []
     schema['properties'].each do |property_name, property|
@@ -60,6 +62,10 @@ struct <%= myclass %>
 std::ostream&
 operator<<(std::ostream& os, const <%= myclass %>& msg);
 
+using json = nlohmann::json;
+
+void to_json(json& j, const <%= myclass %>& m);
+
 }
 <%= myclass %>.cpp
 #include <sstream>
@@ -92,4 +98,22 @@ operator<<(std::ostream& os, const <%= myclass %>& msg)
     return os;
 }
 
+void to_json(json& j, const <%= myclass %>& m)
+{
+    <%-
+    exprs = []
+    schema['properties'].each_with_index do |(property_name, property), index|
+        type = underscore(type_for(class_name(key), property_name, property))
+        toto = "{ "
+        toto += '"' + underscore(property_name) + '"'
+        toto += ", m." + underscore(property_name)
+        toto += " }"
+        exprs.append(toto)
+    end
+    -%>
+    j = json{
+        <%= exprs.join(",\n        ") %>
+    };
+}
+
 }<%- end -%>

From 14995f4a904fd0282f7b1dd10c3e7d940da2fd6b Mon Sep 17 00:00:00 2001
From: Remy Chibois <remy@chybz.net>
Date: Wed, 10 May 2023 17:26:29 +0200
Subject: [PATCH 11/26] chore: json serialization

---
 cpp/include/cucumber/messages/attachment.hpp  |  7 ++-
 cpp/include/cucumber/messages/background.hpp  |  7 ++-
 cpp/include/cucumber/messages/ci.hpp          |  7 ++-
 cpp/include/cucumber/messages/comment.hpp     |  7 ++-
 cpp/include/cucumber/messages/data_table.hpp  |  7 ++-
 cpp/include/cucumber/messages/doc_string.hpp  |  7 ++-
 cpp/include/cucumber/messages/duration.hpp    |  7 ++-
 cpp/include/cucumber/messages/envelope.hpp    |  7 ++-
 cpp/include/cucumber/messages/examples.hpp    |  7 ++-
 cpp/include/cucumber/messages/exception.hpp   |  7 ++-
 cpp/include/cucumber/messages/feature.hpp     |  7 ++-
 .../cucumber/messages/feature_child.hpp       |  7 ++-
 .../cucumber/messages/gherkin_document.hpp    |  7 ++-
 cpp/include/cucumber/messages/git.hpp         |  7 ++-
 cpp/include/cucumber/messages/group.hpp       |  7 ++-
 cpp/include/cucumber/messages/hook.hpp        |  7 ++-
 cpp/include/cucumber/messages/java_method.hpp |  7 ++-
 .../messages/java_stack_trace_element.hpp     |  7 ++-
 cpp/include/cucumber/messages/location.hpp    |  7 ++-
 cpp/include/cucumber/messages/meta.hpp        |  7 ++-
 .../cucumber/messages/parameter_type.hpp      |  7 ++-
 cpp/include/cucumber/messages/parse_error.hpp |  7 ++-
 cpp/include/cucumber/messages/pickle.hpp      |  7 ++-
 .../cucumber/messages/pickle_doc_string.hpp   |  7 ++-
 cpp/include/cucumber/messages/pickle_step.hpp |  7 ++-
 .../messages/pickle_step_argument.hpp         |  7 ++-
 .../cucumber/messages/pickle_table.hpp        |  7 ++-
 .../cucumber/messages/pickle_table_cell.hpp   |  7 ++-
 .../cucumber/messages/pickle_table_row.hpp    |  7 ++-
 cpp/include/cucumber/messages/pickle_tag.hpp  |  7 ++-
 cpp/include/cucumber/messages/product.hpp     |  7 ++-
 cpp/include/cucumber/messages/rule.hpp        |  7 ++-
 cpp/include/cucumber/messages/rule_child.hpp  |  7 ++-
 cpp/include/cucumber/messages/scenario.hpp    |  7 ++-
 cpp/include/cucumber/messages/source.hpp      |  7 ++-
 .../cucumber/messages/source_reference.hpp    |  7 ++-
 cpp/include/cucumber/messages/step.hpp        |  7 ++-
 .../cucumber/messages/step_definition.hpp     |  7 ++-
 .../messages/step_definition_pattern.hpp      |  7 ++-
 .../cucumber/messages/step_match_argument.hpp |  7 ++-
 .../messages/step_match_arguments_list.hpp    |  7 ++-
 cpp/include/cucumber/messages/table_cell.hpp  |  7 ++-
 cpp/include/cucumber/messages/table_row.hpp   |  7 ++-
 cpp/include/cucumber/messages/tag.hpp         |  7 ++-
 cpp/include/cucumber/messages/test_case.hpp   |  7 ++-
 .../cucumber/messages/test_case_finished.hpp  |  7 ++-
 .../cucumber/messages/test_case_started.hpp   |  7 ++-
 .../cucumber/messages/test_run_finished.hpp   |  7 ++-
 .../cucumber/messages/test_run_started.hpp    |  7 ++-
 cpp/include/cucumber/messages/test_step.hpp   |  7 ++-
 .../cucumber/messages/test_step_finished.hpp  |  7 ++-
 .../cucumber/messages/test_step_result.hpp    |  7 ++-
 .../cucumber/messages/test_step_started.hpp   |  7 ++-
 cpp/include/cucumber/messages/timestamp.hpp   |  7 ++-
 .../messages/undefined_parameter_type.hpp     |  7 ++-
 .../cucumber/messages/attachment.cpp          | 41 +++++++++----
 .../cucumber/messages/background.cpp          | 37 ++++++++----
 .../cucumber/messages/ci.cpp                  | 33 ++++++++---
 .../cucumber/messages/comment.cpp             | 29 +++++++--
 .../cucumber/messages/data_table.cpp          | 29 +++++++--
 .../cucumber/messages/doc_string.cpp          | 33 ++++++++---
 .../cucumber/messages/duration.cpp            | 29 +++++++--
 .../cucumber/messages/envelope.cpp            | 59 ++++++++++++-------
 .../cucumber/messages/examples.cpp            | 41 +++++++++----
 .../cucumber/messages/exception.cpp           | 29 +++++++--
 .../cucumber/messages/feature.cpp             | 39 ++++++++----
 .../cucumber/messages/feature_child.cpp       | 31 +++++++---
 .../cucumber/messages/gherkin_document.cpp    | 31 +++++++---
 .../cucumber/messages/git.cpp                 | 33 ++++++++---
 .../cucumber/messages/group.cpp               | 31 +++++++---
 .../cucumber/messages/hook.cpp                | 33 ++++++++---
 .../cucumber/messages/java_method.cpp         | 31 +++++++---
 .../messages/java_stack_trace_element.cpp     | 31 +++++++---
 .../cucumber/messages/location.cpp            | 29 +++++++--
 .../cucumber/messages/meta.cpp                | 37 ++++++++----
 .../cucumber/messages/parameter_type.cpp      | 37 ++++++++----
 .../cucumber/messages/parse_error.cpp         | 29 +++++++--
 .../cucumber/messages/pickle.cpp              | 39 ++++++++----
 .../cucumber/messages/pickle_doc_string.cpp   | 29 +++++++--
 .../cucumber/messages/pickle_step.cpp         | 35 ++++++++---
 .../messages/pickle_step_argument.cpp         | 29 +++++++--
 .../cucumber/messages/pickle_table.cpp        | 27 +++++++--
 .../cucumber/messages/pickle_table_cell.cpp   | 27 +++++++--
 .../cucumber/messages/pickle_table_row.cpp    | 27 +++++++--
 .../cucumber/messages/pickle_tag.cpp          | 29 +++++++--
 .../cucumber/messages/product.cpp             | 29 +++++++--
 .../cucumber/messages/rule.cpp                | 39 ++++++++----
 .../cucumber/messages/rule_child.cpp          | 29 +++++++--
 .../cucumber/messages/scenario.cpp            | 41 +++++++++----
 .../cucumber/messages/source.cpp              | 31 +++++++---
 .../cucumber/messages/source_reference.cpp    | 33 ++++++++---
 .../cucumber/messages/step.cpp                | 39 ++++++++----
 .../cucumber/messages/step_definition.cpp     | 31 +++++++---
 .../messages/step_definition_pattern.cpp      | 29 +++++++--
 .../cucumber/messages/step_match_argument.cpp | 29 +++++++--
 .../messages/step_match_arguments_list.cpp    | 27 +++++++--
 .../cucumber/messages/table_cell.cpp          | 29 +++++++--
 .../cucumber/messages/table_row.cpp           | 31 +++++++---
 .../cucumber/messages/tag.cpp                 | 31 +++++++---
 .../cucumber/messages/test_case.cpp           | 31 +++++++---
 .../cucumber/messages/test_case_finished.cpp  | 31 +++++++---
 .../cucumber/messages/test_case_started.cpp   | 35 ++++++++---
 .../cucumber/messages/test_run_finished.cpp   | 33 ++++++++---
 .../cucumber/messages/test_run_started.cpp    | 27 +++++++--
 .../cucumber/messages/test_step.cpp           | 35 ++++++++---
 .../cucumber/messages/test_step_finished.cpp  | 33 ++++++++---
 .../cucumber/messages/test_step_result.cpp    | 33 ++++++++---
 .../cucumber/messages/test_step_started.cpp   | 31 +++++++---
 .../cucumber/messages/timestamp.cpp           | 29 +++++++--
 .../messages/undefined_parameter_type.cpp     | 29 +++++++--
 jsonschema/scripts/templates/cpp.hpp.erb      | 52 +++++++++++-----
 111 files changed, 1673 insertions(+), 553 deletions(-)

diff --git a/cpp/include/cucumber/messages/attachment.hpp b/cpp/include/cucumber/messages/attachment.hpp
index f550990a..8c12df3f 100644
--- a/cpp/include/cucumber/messages/attachment.hpp
+++ b/cpp/include/cucumber/messages/attachment.hpp
@@ -10,6 +10,8 @@
 
 namespace cucumber::messages {
 
+using json = nlohmann::json;
+
 //
 // Represents the Attachment message in Cucumber's message protocol
 // @see <a href=https://github.com/cucumber/messages>Github - Cucumber - Messages</a>
@@ -40,13 +42,14 @@ struct attachment
     std::string url;
 
     std::string to_string() const;
+
+    void to_json(json& j) const;
+    std::string to_json() const;
 };
 
 std::ostream&
 operator<<(std::ostream& os, const attachment& msg);
 
-using json = nlohmann::json;
-
 void to_json(json& j, const attachment& m);
 
 }
diff --git a/cpp/include/cucumber/messages/background.hpp b/cpp/include/cucumber/messages/background.hpp
index 631ee716..e5d8cf9f 100644
--- a/cpp/include/cucumber/messages/background.hpp
+++ b/cpp/include/cucumber/messages/background.hpp
@@ -10,6 +10,8 @@
 
 namespace cucumber::messages {
 
+using json = nlohmann::json;
+
 //
 // Represents the Background message in Cucumber's message protocol
 // @see <a href=https://github.com/cucumber/messages>Github - Cucumber - Messages</a>
@@ -26,13 +28,14 @@ struct background
     std::string id;
 
     std::string to_string() const;
+
+    void to_json(json& j) const;
+    std::string to_json() const;
 };
 
 std::ostream&
 operator<<(std::ostream& os, const background& msg);
 
-using json = nlohmann::json;
-
 void to_json(json& j, const background& m);
 
 }
diff --git a/cpp/include/cucumber/messages/ci.hpp b/cpp/include/cucumber/messages/ci.hpp
index fbafed83..44e574a0 100644
--- a/cpp/include/cucumber/messages/ci.hpp
+++ b/cpp/include/cucumber/messages/ci.hpp
@@ -9,6 +9,8 @@
 
 namespace cucumber::messages {
 
+using json = nlohmann::json;
+
 //
 // Represents the Ci message in Cucumber's message protocol
 // @see <a href=https://github.com/cucumber/messages>Github - Cucumber - Messages</a>
@@ -25,13 +27,14 @@ struct ci
     cucumber::messages::git git;
 
     std::string to_string() const;
+
+    void to_json(json& j) const;
+    std::string to_json() const;
 };
 
 std::ostream&
 operator<<(std::ostream& os, const ci& msg);
 
-using json = nlohmann::json;
-
 void to_json(json& j, const ci& m);
 
 }
diff --git a/cpp/include/cucumber/messages/comment.hpp b/cpp/include/cucumber/messages/comment.hpp
index d5a452e2..76876514 100644
--- a/cpp/include/cucumber/messages/comment.hpp
+++ b/cpp/include/cucumber/messages/comment.hpp
@@ -9,6 +9,8 @@
 
 namespace cucumber::messages {
 
+using json = nlohmann::json;
+
 //
 // Represents the Comment message in Cucumber's message protocol
 // @see <a href=https://github.com/cucumber/messages>Github - Cucumber - Messages</a>
@@ -23,13 +25,14 @@ struct comment
     std::string text;
 
     std::string to_string() const;
+
+    void to_json(json& j) const;
+    std::string to_json() const;
 };
 
 std::ostream&
 operator<<(std::ostream& os, const comment& msg);
 
-using json = nlohmann::json;
-
 void to_json(json& j, const comment& m);
 
 }
diff --git a/cpp/include/cucumber/messages/data_table.hpp b/cpp/include/cucumber/messages/data_table.hpp
index c880e32b..ec3ce1d7 100644
--- a/cpp/include/cucumber/messages/data_table.hpp
+++ b/cpp/include/cucumber/messages/data_table.hpp
@@ -10,6 +10,8 @@
 
 namespace cucumber::messages {
 
+using json = nlohmann::json;
+
 //
 // Represents the DataTable message in Cucumber's message protocol
 // @see <a href=https://github.com/cucumber/messages>Github - Cucumber - Messages</a>
@@ -22,13 +24,14 @@ struct data_table
     std::vector<cucumber::messages::table_row> rows;
 
     std::string to_string() const;
+
+    void to_json(json& j) const;
+    std::string to_json() const;
 };
 
 std::ostream&
 operator<<(std::ostream& os, const data_table& msg);
 
-using json = nlohmann::json;
-
 void to_json(json& j, const data_table& m);
 
 }
diff --git a/cpp/include/cucumber/messages/doc_string.hpp b/cpp/include/cucumber/messages/doc_string.hpp
index 874cf96a..2d3f8959 100644
--- a/cpp/include/cucumber/messages/doc_string.hpp
+++ b/cpp/include/cucumber/messages/doc_string.hpp
@@ -9,6 +9,8 @@
 
 namespace cucumber::messages {
 
+using json = nlohmann::json;
+
 //
 // Represents the DocString message in Cucumber's message protocol
 // @see <a href=https://github.com/cucumber/messages>Github - Cucumber - Messages</a>
@@ -23,13 +25,14 @@ struct doc_string
     std::string delimiter;
 
     std::string to_string() const;
+
+    void to_json(json& j) const;
+    std::string to_json() const;
 };
 
 std::ostream&
 operator<<(std::ostream& os, const doc_string& msg);
 
-using json = nlohmann::json;
-
 void to_json(json& j, const doc_string& m);
 
 }
diff --git a/cpp/include/cucumber/messages/duration.hpp b/cpp/include/cucumber/messages/duration.hpp
index 67663183..aebdcaa1 100644
--- a/cpp/include/cucumber/messages/duration.hpp
+++ b/cpp/include/cucumber/messages/duration.hpp
@@ -7,6 +7,8 @@
 
 namespace cucumber::messages {
 
+using json = nlohmann::json;
+
 //
 // Represents the Duration message in Cucumber's message protocol
 // @see <a href=https://github.com/cucumber/messages>Github - Cucumber - Messages</a>
@@ -22,13 +24,14 @@ struct duration
     std::size_t nanos;
 
     std::string to_string() const;
+
+    void to_json(json& j) const;
+    std::string to_json() const;
 };
 
 std::ostream&
 operator<<(std::ostream& os, const duration& msg);
 
-using json = nlohmann::json;
-
 void to_json(json& j, const duration& m);
 
 }
diff --git a/cpp/include/cucumber/messages/envelope.hpp b/cpp/include/cucumber/messages/envelope.hpp
index 82404224..bc371e38 100644
--- a/cpp/include/cucumber/messages/envelope.hpp
+++ b/cpp/include/cucumber/messages/envelope.hpp
@@ -25,6 +25,8 @@
 
 namespace cucumber::messages {
 
+using json = nlohmann::json;
+
 //
 // Represents the Envelope message in Cucumber's message protocol
 // @see <a href=https://github.com/cucumber/messages>Github - Cucumber - Messages</a>
@@ -59,13 +61,14 @@ struct envelope
     cucumber::messages::undefined_parameter_type undefined_parameter_type;
 
     std::string to_string() const;
+
+    void to_json(json& j) const;
+    std::string to_json() const;
 };
 
 std::ostream&
 operator<<(std::ostream& os, const envelope& msg);
 
-using json = nlohmann::json;
-
 void to_json(json& j, const envelope& m);
 
 }
diff --git a/cpp/include/cucumber/messages/examples.hpp b/cpp/include/cucumber/messages/examples.hpp
index 82e79174..47d30200 100644
--- a/cpp/include/cucumber/messages/examples.hpp
+++ b/cpp/include/cucumber/messages/examples.hpp
@@ -12,6 +12,8 @@
 
 namespace cucumber::messages {
 
+using json = nlohmann::json;
+
 //
 // Represents the Examples message in Cucumber's message protocol
 // @see <a href=https://github.com/cucumber/messages>Github - Cucumber - Messages</a>
@@ -30,13 +32,14 @@ struct examples
     std::string id;
 
     std::string to_string() const;
+
+    void to_json(json& j) const;
+    std::string to_json() const;
 };
 
 std::ostream&
 operator<<(std::ostream& os, const examples& msg);
 
-using json = nlohmann::json;
-
 void to_json(json& j, const examples& m);
 
 }
diff --git a/cpp/include/cucumber/messages/exception.hpp b/cpp/include/cucumber/messages/exception.hpp
index d9c1c108..dee088f3 100644
--- a/cpp/include/cucumber/messages/exception.hpp
+++ b/cpp/include/cucumber/messages/exception.hpp
@@ -7,6 +7,8 @@
 
 namespace cucumber::messages {
 
+using json = nlohmann::json;
+
 //
 // Represents the Exception message in Cucumber's message protocol
 // @see <a href=https://github.com/cucumber/messages>Github - Cucumber - Messages</a>
@@ -21,13 +23,14 @@ struct exception
     std::string message;
 
     std::string to_string() const;
+
+    void to_json(json& j) const;
+    std::string to_json() const;
 };
 
 std::ostream&
 operator<<(std::ostream& os, const exception& msg);
 
-using json = nlohmann::json;
-
 void to_json(json& j, const exception& m);
 
 }
diff --git a/cpp/include/cucumber/messages/feature.hpp b/cpp/include/cucumber/messages/feature.hpp
index 3a381732..85fb7a73 100644
--- a/cpp/include/cucumber/messages/feature.hpp
+++ b/cpp/include/cucumber/messages/feature.hpp
@@ -11,6 +11,8 @@
 
 namespace cucumber::messages {
 
+using json = nlohmann::json;
+
 //
 // Represents the Feature message in Cucumber's message protocol
 // @see <a href=https://github.com/cucumber/messages>Github - Cucumber - Messages</a>
@@ -28,13 +30,14 @@ struct feature
     std::vector<cucumber::messages::feature_child> children;
 
     std::string to_string() const;
+
+    void to_json(json& j) const;
+    std::string to_json() const;
 };
 
 std::ostream&
 operator<<(std::ostream& os, const feature& msg);
 
-using json = nlohmann::json;
-
 void to_json(json& j, const feature& m);
 
 }
diff --git a/cpp/include/cucumber/messages/feature_child.hpp b/cpp/include/cucumber/messages/feature_child.hpp
index 622501f2..9be9a76f 100644
--- a/cpp/include/cucumber/messages/feature_child.hpp
+++ b/cpp/include/cucumber/messages/feature_child.hpp
@@ -11,6 +11,8 @@
 
 namespace cucumber::messages {
 
+using json = nlohmann::json;
+
 //
 // Represents the FeatureChild message in Cucumber's message protocol
 // @see <a href=https://github.com/cucumber/messages>Github - Cucumber - Messages</a>
@@ -26,13 +28,14 @@ struct feature_child
     cucumber::messages::scenario scenario;
 
     std::string to_string() const;
+
+    void to_json(json& j) const;
+    std::string to_json() const;
 };
 
 std::ostream&
 operator<<(std::ostream& os, const feature_child& msg);
 
-using json = nlohmann::json;
-
 void to_json(json& j, const feature_child& m);
 
 }
diff --git a/cpp/include/cucumber/messages/gherkin_document.hpp b/cpp/include/cucumber/messages/gherkin_document.hpp
index c5e3a890..2bcaf90a 100644
--- a/cpp/include/cucumber/messages/gherkin_document.hpp
+++ b/cpp/include/cucumber/messages/gherkin_document.hpp
@@ -10,6 +10,8 @@
 
 namespace cucumber::messages {
 
+using json = nlohmann::json;
+
 //
 // Represents the GherkinDocument message in Cucumber's message protocol
 // @see <a href=https://github.com/cucumber/messages>Github - Cucumber - Messages</a>
@@ -30,13 +32,14 @@ struct gherkin_document
     std::vector<cucumber::messages::comment> comments;
 
     std::string to_string() const;
+
+    void to_json(json& j) const;
+    std::string to_json() const;
 };
 
 std::ostream&
 operator<<(std::ostream& os, const gherkin_document& msg);
 
-using json = nlohmann::json;
-
 void to_json(json& j, const gherkin_document& m);
 
 }
diff --git a/cpp/include/cucumber/messages/git.hpp b/cpp/include/cucumber/messages/git.hpp
index 329547dd..d4d2abd4 100644
--- a/cpp/include/cucumber/messages/git.hpp
+++ b/cpp/include/cucumber/messages/git.hpp
@@ -7,6 +7,8 @@
 
 namespace cucumber::messages {
 
+using json = nlohmann::json;
+
 //
 // Represents the Git message in Cucumber's message protocol
 // @see <a href=https://github.com/cucumber/messages>Github - Cucumber - Messages</a>
@@ -24,13 +26,14 @@ struct git
     std::string tag;
 
     std::string to_string() const;
+
+    void to_json(json& j) const;
+    std::string to_json() const;
 };
 
 std::ostream&
 operator<<(std::ostream& os, const git& msg);
 
-using json = nlohmann::json;
-
 void to_json(json& j, const git& m);
 
 }
diff --git a/cpp/include/cucumber/messages/group.hpp b/cpp/include/cucumber/messages/group.hpp
index e0ff88a6..ab85c088 100644
--- a/cpp/include/cucumber/messages/group.hpp
+++ b/cpp/include/cucumber/messages/group.hpp
@@ -9,6 +9,8 @@
 
 namespace cucumber::messages {
 
+using json = nlohmann::json;
+
 //
 // Represents the Group message in Cucumber's message protocol
 // @see <a href=https://github.com/cucumber/messages>Github - Cucumber - Messages</a>
@@ -22,13 +24,14 @@ struct group
     std::string value;
 
     std::string to_string() const;
+
+    void to_json(json& j) const;
+    std::string to_json() const;
 };
 
 std::ostream&
 operator<<(std::ostream& os, const group& msg);
 
-using json = nlohmann::json;
-
 void to_json(json& j, const group& m);
 
 }
diff --git a/cpp/include/cucumber/messages/hook.hpp b/cpp/include/cucumber/messages/hook.hpp
index 628b417d..967544f3 100644
--- a/cpp/include/cucumber/messages/hook.hpp
+++ b/cpp/include/cucumber/messages/hook.hpp
@@ -9,6 +9,8 @@
 
 namespace cucumber::messages {
 
+using json = nlohmann::json;
+
 //
 // Represents the Hook message in Cucumber's message protocol
 // @see <a href=https://github.com/cucumber/messages>Github - Cucumber - Messages</a>
@@ -23,13 +25,14 @@ struct hook
     std::string tag_expression;
 
     std::string to_string() const;
+
+    void to_json(json& j) const;
+    std::string to_json() const;
 };
 
 std::ostream&
 operator<<(std::ostream& os, const hook& msg);
 
-using json = nlohmann::json;
-
 void to_json(json& j, const hook& m);
 
 }
diff --git a/cpp/include/cucumber/messages/java_method.hpp b/cpp/include/cucumber/messages/java_method.hpp
index 44143d8d..9f3d14a4 100644
--- a/cpp/include/cucumber/messages/java_method.hpp
+++ b/cpp/include/cucumber/messages/java_method.hpp
@@ -7,6 +7,8 @@
 
 namespace cucumber::messages {
 
+using json = nlohmann::json;
+
 //
 // Represents the JavaMethod message in Cucumber's message protocol
 // @see <a href=https://github.com/cucumber/messages>Github - Cucumber - Messages</a>
@@ -20,13 +22,14 @@ struct java_method
     std::vector<std::string> method_parameter_types;
 
     std::string to_string() const;
+
+    void to_json(json& j) const;
+    std::string to_json() const;
 };
 
 std::ostream&
 operator<<(std::ostream& os, const java_method& msg);
 
-using json = nlohmann::json;
-
 void to_json(json& j, const java_method& m);
 
 }
diff --git a/cpp/include/cucumber/messages/java_stack_trace_element.hpp b/cpp/include/cucumber/messages/java_stack_trace_element.hpp
index 5833c837..fc2ecc39 100644
--- a/cpp/include/cucumber/messages/java_stack_trace_element.hpp
+++ b/cpp/include/cucumber/messages/java_stack_trace_element.hpp
@@ -7,6 +7,8 @@
 
 namespace cucumber::messages {
 
+using json = nlohmann::json;
+
 //
 // Represents the JavaStackTraceElement message in Cucumber's message protocol
 // @see <a href=https://github.com/cucumber/messages>Github - Cucumber - Messages</a>
@@ -20,13 +22,14 @@ struct java_stack_trace_element
     std::string method_name;
 
     std::string to_string() const;
+
+    void to_json(json& j) const;
+    std::string to_json() const;
 };
 
 std::ostream&
 operator<<(std::ostream& os, const java_stack_trace_element& msg);
 
-using json = nlohmann::json;
-
 void to_json(json& j, const java_stack_trace_element& m);
 
 }
diff --git a/cpp/include/cucumber/messages/location.hpp b/cpp/include/cucumber/messages/location.hpp
index 4addc190..6d01167b 100644
--- a/cpp/include/cucumber/messages/location.hpp
+++ b/cpp/include/cucumber/messages/location.hpp
@@ -7,6 +7,8 @@
 
 namespace cucumber::messages {
 
+using json = nlohmann::json;
+
 //
 // Represents the Location message in Cucumber's message protocol
 // @see <a href=https://github.com/cucumber/messages>Github - Cucumber - Messages</a>
@@ -21,13 +23,14 @@ struct location
     std::size_t column;
 
     std::string to_string() const;
+
+    void to_json(json& j) const;
+    std::string to_json() const;
 };
 
 std::ostream&
 operator<<(std::ostream& os, const location& msg);
 
-using json = nlohmann::json;
-
 void to_json(json& j, const location& m);
 
 }
diff --git a/cpp/include/cucumber/messages/meta.hpp b/cpp/include/cucumber/messages/meta.hpp
index 143feff8..c5eab095 100644
--- a/cpp/include/cucumber/messages/meta.hpp
+++ b/cpp/include/cucumber/messages/meta.hpp
@@ -13,6 +13,8 @@
 
 namespace cucumber::messages {
 
+using json = nlohmann::json;
+
 //
 // Represents the Meta message in Cucumber's message protocol
 // @see <a href=https://github.com/cucumber/messages>Github - Cucumber - Messages</a>
@@ -32,13 +34,14 @@ struct meta
     cucumber::messages::ci ci;
 
     std::string to_string() const;
+
+    void to_json(json& j) const;
+    std::string to_json() const;
 };
 
 std::ostream&
 operator<<(std::ostream& os, const meta& msg);
 
-using json = nlohmann::json;
-
 void to_json(json& j, const meta& m);
 
 }
diff --git a/cpp/include/cucumber/messages/parameter_type.hpp b/cpp/include/cucumber/messages/parameter_type.hpp
index a30cc9be..4c692fff 100644
--- a/cpp/include/cucumber/messages/parameter_type.hpp
+++ b/cpp/include/cucumber/messages/parameter_type.hpp
@@ -9,6 +9,8 @@
 
 namespace cucumber::messages {
 
+using json = nlohmann::json;
+
 //
 // Represents the ParameterType message in Cucumber's message protocol
 // @see <a href=https://github.com/cucumber/messages>Github - Cucumber - Messages</a>
@@ -25,13 +27,14 @@ struct parameter_type
     cucumber::messages::source_reference source_reference;
 
     std::string to_string() const;
+
+    void to_json(json& j) const;
+    std::string to_json() const;
 };
 
 std::ostream&
 operator<<(std::ostream& os, const parameter_type& msg);
 
-using json = nlohmann::json;
-
 void to_json(json& j, const parameter_type& m);
 
 }
diff --git a/cpp/include/cucumber/messages/parse_error.hpp b/cpp/include/cucumber/messages/parse_error.hpp
index bd369290..9ac5464e 100644
--- a/cpp/include/cucumber/messages/parse_error.hpp
+++ b/cpp/include/cucumber/messages/parse_error.hpp
@@ -9,6 +9,8 @@
 
 namespace cucumber::messages {
 
+using json = nlohmann::json;
+
 //
 // Represents the ParseError message in Cucumber's message protocol
 // @see <a href=https://github.com/cucumber/messages>Github - Cucumber - Messages</a>
@@ -21,13 +23,14 @@ struct parse_error
     std::string message;
 
     std::string to_string() const;
+
+    void to_json(json& j) const;
+    std::string to_json() const;
 };
 
 std::ostream&
 operator<<(std::ostream& os, const parse_error& msg);
 
-using json = nlohmann::json;
-
 void to_json(json& j, const parse_error& m);
 
 }
diff --git a/cpp/include/cucumber/messages/pickle.hpp b/cpp/include/cucumber/messages/pickle.hpp
index 20b5fe35..dc01fb47 100644
--- a/cpp/include/cucumber/messages/pickle.hpp
+++ b/cpp/include/cucumber/messages/pickle.hpp
@@ -10,6 +10,8 @@
 
 namespace cucumber::messages {
 
+using json = nlohmann::json;
+
 //
 // Represents the Pickle message in Cucumber's message protocol
 // @see <a href=https://github.com/cucumber/messages>Github - Cucumber - Messages</a>
@@ -40,13 +42,14 @@ struct pickle
     std::vector<std::string> ast_node_ids;
 
     std::string to_string() const;
+
+    void to_json(json& j) const;
+    std::string to_json() const;
 };
 
 std::ostream&
 operator<<(std::ostream& os, const pickle& msg);
 
-using json = nlohmann::json;
-
 void to_json(json& j, const pickle& m);
 
 }
diff --git a/cpp/include/cucumber/messages/pickle_doc_string.hpp b/cpp/include/cucumber/messages/pickle_doc_string.hpp
index 2e9a59f7..d9d9463b 100644
--- a/cpp/include/cucumber/messages/pickle_doc_string.hpp
+++ b/cpp/include/cucumber/messages/pickle_doc_string.hpp
@@ -7,6 +7,8 @@
 
 namespace cucumber::messages {
 
+using json = nlohmann::json;
+
 //
 // Represents the PickleDocString message in Cucumber's message protocol
 // @see <a href=https://github.com/cucumber/messages>Github - Cucumber - Messages</a>
@@ -19,13 +21,14 @@ struct pickle_doc_string
     std::string content;
 
     std::string to_string() const;
+
+    void to_json(json& j) const;
+    std::string to_json() const;
 };
 
 std::ostream&
 operator<<(std::ostream& os, const pickle_doc_string& msg);
 
-using json = nlohmann::json;
-
 void to_json(json& j, const pickle_doc_string& m);
 
 }
diff --git a/cpp/include/cucumber/messages/pickle_step.hpp b/cpp/include/cucumber/messages/pickle_step.hpp
index 2fb52c83..0a10b196 100644
--- a/cpp/include/cucumber/messages/pickle_step.hpp
+++ b/cpp/include/cucumber/messages/pickle_step.hpp
@@ -10,6 +10,8 @@
 
 namespace cucumber::messages {
 
+using json = nlohmann::json;
+
 //
 // Represents the PickleStep message in Cucumber's message protocol
 // @see <a href=https://github.com/cucumber/messages>Github - Cucumber - Messages</a>
@@ -27,13 +29,14 @@ struct pickle_step
     std::string text;
 
     std::string to_string() const;
+
+    void to_json(json& j) const;
+    std::string to_json() const;
 };
 
 std::ostream&
 operator<<(std::ostream& os, const pickle_step& msg);
 
-using json = nlohmann::json;
-
 void to_json(json& j, const pickle_step& m);
 
 }
diff --git a/cpp/include/cucumber/messages/pickle_step_argument.hpp b/cpp/include/cucumber/messages/pickle_step_argument.hpp
index a5dd8734..1f0c14c9 100644
--- a/cpp/include/cucumber/messages/pickle_step_argument.hpp
+++ b/cpp/include/cucumber/messages/pickle_step_argument.hpp
@@ -10,6 +10,8 @@
 
 namespace cucumber::messages {
 
+using json = nlohmann::json;
+
 //
 // Represents the PickleStepArgument message in Cucumber's message protocol
 // @see <a href=https://github.com/cucumber/messages>Github - Cucumber - Messages</a>
@@ -24,13 +26,14 @@ struct pickle_step_argument
     cucumber::messages::pickle_table data_table;
 
     std::string to_string() const;
+
+    void to_json(json& j) const;
+    std::string to_json() const;
 };
 
 std::ostream&
 operator<<(std::ostream& os, const pickle_step_argument& msg);
 
-using json = nlohmann::json;
-
 void to_json(json& j, const pickle_step_argument& m);
 
 }
diff --git a/cpp/include/cucumber/messages/pickle_table.hpp b/cpp/include/cucumber/messages/pickle_table.hpp
index dba0ac4a..270e0ccc 100644
--- a/cpp/include/cucumber/messages/pickle_table.hpp
+++ b/cpp/include/cucumber/messages/pickle_table.hpp
@@ -9,6 +9,8 @@
 
 namespace cucumber::messages {
 
+using json = nlohmann::json;
+
 //
 // Represents the PickleTable message in Cucumber's message protocol
 // @see <a href=https://github.com/cucumber/messages>Github - Cucumber - Messages</a>
@@ -20,13 +22,14 @@ struct pickle_table
     std::vector<cucumber::messages::pickle_table_row> rows;
 
     std::string to_string() const;
+
+    void to_json(json& j) const;
+    std::string to_json() const;
 };
 
 std::ostream&
 operator<<(std::ostream& os, const pickle_table& msg);
 
-using json = nlohmann::json;
-
 void to_json(json& j, const pickle_table& m);
 
 }
diff --git a/cpp/include/cucumber/messages/pickle_table_cell.hpp b/cpp/include/cucumber/messages/pickle_table_cell.hpp
index 3c20ff73..0dffa30d 100644
--- a/cpp/include/cucumber/messages/pickle_table_cell.hpp
+++ b/cpp/include/cucumber/messages/pickle_table_cell.hpp
@@ -7,6 +7,8 @@
 
 namespace cucumber::messages {
 
+using json = nlohmann::json;
+
 //
 // Represents the PickleTableCell message in Cucumber's message protocol
 // @see <a href=https://github.com/cucumber/messages>Github - Cucumber - Messages</a>
@@ -18,13 +20,14 @@ struct pickle_table_cell
     std::string value;
 
     std::string to_string() const;
+
+    void to_json(json& j) const;
+    std::string to_json() const;
 };
 
 std::ostream&
 operator<<(std::ostream& os, const pickle_table_cell& msg);
 
-using json = nlohmann::json;
-
 void to_json(json& j, const pickle_table_cell& m);
 
 }
diff --git a/cpp/include/cucumber/messages/pickle_table_row.hpp b/cpp/include/cucumber/messages/pickle_table_row.hpp
index f8b469ed..a894e774 100644
--- a/cpp/include/cucumber/messages/pickle_table_row.hpp
+++ b/cpp/include/cucumber/messages/pickle_table_row.hpp
@@ -9,6 +9,8 @@
 
 namespace cucumber::messages {
 
+using json = nlohmann::json;
+
 //
 // Represents the PickleTableRow message in Cucumber's message protocol
 // @see <a href=https://github.com/cucumber/messages>Github - Cucumber - Messages</a>
@@ -20,13 +22,14 @@ struct pickle_table_row
     std::vector<cucumber::messages::pickle_table_cell> cells;
 
     std::string to_string() const;
+
+    void to_json(json& j) const;
+    std::string to_json() const;
 };
 
 std::ostream&
 operator<<(std::ostream& os, const pickle_table_row& msg);
 
-using json = nlohmann::json;
-
 void to_json(json& j, const pickle_table_row& m);
 
 }
diff --git a/cpp/include/cucumber/messages/pickle_tag.hpp b/cpp/include/cucumber/messages/pickle_tag.hpp
index 4016b62f..9937e1b2 100644
--- a/cpp/include/cucumber/messages/pickle_tag.hpp
+++ b/cpp/include/cucumber/messages/pickle_tag.hpp
@@ -7,6 +7,8 @@
 
 namespace cucumber::messages {
 
+using json = nlohmann::json;
+
 //
 // Represents the PickleTag message in Cucumber's message protocol
 // @see <a href=https://github.com/cucumber/messages>Github - Cucumber - Messages</a>
@@ -21,13 +23,14 @@ struct pickle_tag
     std::string ast_node_id;
 
     std::string to_string() const;
+
+    void to_json(json& j) const;
+    std::string to_json() const;
 };
 
 std::ostream&
 operator<<(std::ostream& os, const pickle_tag& msg);
 
-using json = nlohmann::json;
-
 void to_json(json& j, const pickle_tag& m);
 
 }
diff --git a/cpp/include/cucumber/messages/product.hpp b/cpp/include/cucumber/messages/product.hpp
index e247a66b..4a16e3e7 100644
--- a/cpp/include/cucumber/messages/product.hpp
+++ b/cpp/include/cucumber/messages/product.hpp
@@ -7,6 +7,8 @@
 
 namespace cucumber::messages {
 
+using json = nlohmann::json;
+
 //
 // Represents the Product message in Cucumber's message protocol
 // @see <a href=https://github.com/cucumber/messages>Github - Cucumber - Messages</a>
@@ -21,13 +23,14 @@ struct product
     std::string version;
 
     std::string to_string() const;
+
+    void to_json(json& j) const;
+    std::string to_json() const;
 };
 
 std::ostream&
 operator<<(std::ostream& os, const product& msg);
 
-using json = nlohmann::json;
-
 void to_json(json& j, const product& m);
 
 }
diff --git a/cpp/include/cucumber/messages/rule.hpp b/cpp/include/cucumber/messages/rule.hpp
index 89cc8625..401af218 100644
--- a/cpp/include/cucumber/messages/rule.hpp
+++ b/cpp/include/cucumber/messages/rule.hpp
@@ -11,6 +11,8 @@
 
 namespace cucumber::messages {
 
+using json = nlohmann::json;
+
 //
 // Represents the Rule message in Cucumber's message protocol
 // @see <a href=https://github.com/cucumber/messages>Github - Cucumber - Messages</a>
@@ -28,13 +30,14 @@ struct rule
     std::string id;
 
     std::string to_string() const;
+
+    void to_json(json& j) const;
+    std::string to_json() const;
 };
 
 std::ostream&
 operator<<(std::ostream& os, const rule& msg);
 
-using json = nlohmann::json;
-
 void to_json(json& j, const rule& m);
 
 }
diff --git a/cpp/include/cucumber/messages/rule_child.hpp b/cpp/include/cucumber/messages/rule_child.hpp
index 44936ef4..a1e57198 100644
--- a/cpp/include/cucumber/messages/rule_child.hpp
+++ b/cpp/include/cucumber/messages/rule_child.hpp
@@ -10,6 +10,8 @@
 
 namespace cucumber::messages {
 
+using json = nlohmann::json;
+
 //
 // Represents the RuleChild message in Cucumber's message protocol
 // @see <a href=https://github.com/cucumber/messages>Github - Cucumber - Messages</a>
@@ -24,13 +26,14 @@ struct rule_child
     cucumber::messages::scenario scenario;
 
     std::string to_string() const;
+
+    void to_json(json& j) const;
+    std::string to_json() const;
 };
 
 std::ostream&
 operator<<(std::ostream& os, const rule_child& msg);
 
-using json = nlohmann::json;
-
 void to_json(json& j, const rule_child& m);
 
 }
diff --git a/cpp/include/cucumber/messages/scenario.hpp b/cpp/include/cucumber/messages/scenario.hpp
index 84a72956..18c2d06a 100644
--- a/cpp/include/cucumber/messages/scenario.hpp
+++ b/cpp/include/cucumber/messages/scenario.hpp
@@ -12,6 +12,8 @@
 
 namespace cucumber::messages {
 
+using json = nlohmann::json;
+
 //
 // Represents the Scenario message in Cucumber's message protocol
 // @see <a href=https://github.com/cucumber/messages>Github - Cucumber - Messages</a>
@@ -30,13 +32,14 @@ struct scenario
     std::string id;
 
     std::string to_string() const;
+
+    void to_json(json& j) const;
+    std::string to_json() const;
 };
 
 std::ostream&
 operator<<(std::ostream& os, const scenario& msg);
 
-using json = nlohmann::json;
-
 void to_json(json& j, const scenario& m);
 
 }
diff --git a/cpp/include/cucumber/messages/source.hpp b/cpp/include/cucumber/messages/source.hpp
index 57aed3fb..bb3fc881 100644
--- a/cpp/include/cucumber/messages/source.hpp
+++ b/cpp/include/cucumber/messages/source.hpp
@@ -9,6 +9,8 @@
 
 namespace cucumber::messages {
 
+using json = nlohmann::json;
+
 //
 // Represents the Source message in Cucumber's message protocol
 // @see <a href=https://github.com/cucumber/messages>Github - Cucumber - Messages</a>
@@ -26,13 +28,14 @@ struct source
     cucumber::messages::source_media_type media_type;
 
     std::string to_string() const;
+
+    void to_json(json& j) const;
+    std::string to_json() const;
 };
 
 std::ostream&
 operator<<(std::ostream& os, const source& msg);
 
-using json = nlohmann::json;
-
 void to_json(json& j, const source& m);
 
 }
diff --git a/cpp/include/cucumber/messages/source_reference.hpp b/cpp/include/cucumber/messages/source_reference.hpp
index b0469d28..7b9952f5 100644
--- a/cpp/include/cucumber/messages/source_reference.hpp
+++ b/cpp/include/cucumber/messages/source_reference.hpp
@@ -11,6 +11,8 @@
 
 namespace cucumber::messages {
 
+using json = nlohmann::json;
+
 //
 // Represents the SourceReference message in Cucumber's message protocol
 // @see <a href=https://github.com/cucumber/messages>Github - Cucumber - Messages</a>
@@ -28,13 +30,14 @@ struct source_reference
     cucumber::messages::location location;
 
     std::string to_string() const;
+
+    void to_json(json& j) const;
+    std::string to_json() const;
 };
 
 std::ostream&
 operator<<(std::ostream& os, const source_reference& msg);
 
-using json = nlohmann::json;
-
 void to_json(json& j, const source_reference& m);
 
 }
diff --git a/cpp/include/cucumber/messages/step.hpp b/cpp/include/cucumber/messages/step.hpp
index bb182a16..fdcf53f3 100644
--- a/cpp/include/cucumber/messages/step.hpp
+++ b/cpp/include/cucumber/messages/step.hpp
@@ -12,6 +12,8 @@
 
 namespace cucumber::messages {
 
+using json = nlohmann::json;
+
 //
 // Represents the Step message in Cucumber's message protocol
 // @see <a href=https://github.com/cucumber/messages>Github - Cucumber - Messages</a>
@@ -31,13 +33,14 @@ struct step
     std::string id;
 
     std::string to_string() const;
+
+    void to_json(json& j) const;
+    std::string to_json() const;
 };
 
 std::ostream&
 operator<<(std::ostream& os, const step& msg);
 
-using json = nlohmann::json;
-
 void to_json(json& j, const step& m);
 
 }
diff --git a/cpp/include/cucumber/messages/step_definition.hpp b/cpp/include/cucumber/messages/step_definition.hpp
index 52a158fb..b13b1663 100644
--- a/cpp/include/cucumber/messages/step_definition.hpp
+++ b/cpp/include/cucumber/messages/step_definition.hpp
@@ -10,6 +10,8 @@
 
 namespace cucumber::messages {
 
+using json = nlohmann::json;
+
 //
 // Represents the StepDefinition message in Cucumber's message protocol
 // @see <a href=https://github.com/cucumber/messages>Github - Cucumber - Messages</a>
@@ -23,13 +25,14 @@ struct step_definition
     cucumber::messages::source_reference source_reference;
 
     std::string to_string() const;
+
+    void to_json(json& j) const;
+    std::string to_json() const;
 };
 
 std::ostream&
 operator<<(std::ostream& os, const step_definition& msg);
 
-using json = nlohmann::json;
-
 void to_json(json& j, const step_definition& m);
 
 }
diff --git a/cpp/include/cucumber/messages/step_definition_pattern.hpp b/cpp/include/cucumber/messages/step_definition_pattern.hpp
index ea5e0722..5a33dd43 100644
--- a/cpp/include/cucumber/messages/step_definition_pattern.hpp
+++ b/cpp/include/cucumber/messages/step_definition_pattern.hpp
@@ -9,6 +9,8 @@
 
 namespace cucumber::messages {
 
+using json = nlohmann::json;
+
 //
 // Represents the StepDefinitionPattern message in Cucumber's message protocol
 // @see <a href=https://github.com/cucumber/messages>Github - Cucumber - Messages</a>
@@ -21,13 +23,14 @@ struct step_definition_pattern
     cucumber::messages::step_definition_pattern_type type;
 
     std::string to_string() const;
+
+    void to_json(json& j) const;
+    std::string to_json() const;
 };
 
 std::ostream&
 operator<<(std::ostream& os, const step_definition_pattern& msg);
 
-using json = nlohmann::json;
-
 void to_json(json& j, const step_definition_pattern& m);
 
 }
diff --git a/cpp/include/cucumber/messages/step_match_argument.hpp b/cpp/include/cucumber/messages/step_match_argument.hpp
index 8c391833..b68df3a9 100644
--- a/cpp/include/cucumber/messages/step_match_argument.hpp
+++ b/cpp/include/cucumber/messages/step_match_argument.hpp
@@ -9,6 +9,8 @@
 
 namespace cucumber::messages {
 
+using json = nlohmann::json;
+
 //
 // Represents the StepMatchArgument message in Cucumber's message protocol
 // @see <a href=https://github.com/cucumber/messages>Github - Cucumber - Messages</a>
@@ -28,13 +30,14 @@ struct step_match_argument
     std::string parameter_type_name;
 
     std::string to_string() const;
+
+    void to_json(json& j) const;
+    std::string to_json() const;
 };
 
 std::ostream&
 operator<<(std::ostream& os, const step_match_argument& msg);
 
-using json = nlohmann::json;
-
 void to_json(json& j, const step_match_argument& m);
 
 }
diff --git a/cpp/include/cucumber/messages/step_match_arguments_list.hpp b/cpp/include/cucumber/messages/step_match_arguments_list.hpp
index ef929049..d004a88b 100644
--- a/cpp/include/cucumber/messages/step_match_arguments_list.hpp
+++ b/cpp/include/cucumber/messages/step_match_arguments_list.hpp
@@ -9,6 +9,8 @@
 
 namespace cucumber::messages {
 
+using json = nlohmann::json;
+
 //
 // Represents the StepMatchArgumentsList message in Cucumber's message protocol
 // @see <a href=https://github.com/cucumber/messages>Github - Cucumber - Messages</a>
@@ -20,13 +22,14 @@ struct step_match_arguments_list
     std::vector<cucumber::messages::step_match_argument> step_match_arguments;
 
     std::string to_string() const;
+
+    void to_json(json& j) const;
+    std::string to_json() const;
 };
 
 std::ostream&
 operator<<(std::ostream& os, const step_match_arguments_list& msg);
 
-using json = nlohmann::json;
-
 void to_json(json& j, const step_match_arguments_list& m);
 
 }
diff --git a/cpp/include/cucumber/messages/table_cell.hpp b/cpp/include/cucumber/messages/table_cell.hpp
index 829b629d..8e0bf6c1 100644
--- a/cpp/include/cucumber/messages/table_cell.hpp
+++ b/cpp/include/cucumber/messages/table_cell.hpp
@@ -9,6 +9,8 @@
 
 namespace cucumber::messages {
 
+using json = nlohmann::json;
+
 //
 // Represents the TableCell message in Cucumber's message protocol
 // @see <a href=https://github.com/cucumber/messages>Github - Cucumber - Messages</a>
@@ -23,13 +25,14 @@ struct table_cell
     std::string value;
 
     std::string to_string() const;
+
+    void to_json(json& j) const;
+    std::string to_json() const;
 };
 
 std::ostream&
 operator<<(std::ostream& os, const table_cell& msg);
 
-using json = nlohmann::json;
-
 void to_json(json& j, const table_cell& m);
 
 }
diff --git a/cpp/include/cucumber/messages/table_row.hpp b/cpp/include/cucumber/messages/table_row.hpp
index d83dace4..33ac0ef3 100644
--- a/cpp/include/cucumber/messages/table_row.hpp
+++ b/cpp/include/cucumber/messages/table_row.hpp
@@ -10,6 +10,8 @@
 
 namespace cucumber::messages {
 
+using json = nlohmann::json;
+
 //
 // Represents the TableRow message in Cucumber's message protocol
 // @see <a href=https://github.com/cucumber/messages>Github - Cucumber - Messages</a>
@@ -25,13 +27,14 @@ struct table_row
     std::string id;
 
     std::string to_string() const;
+
+    void to_json(json& j) const;
+    std::string to_json() const;
 };
 
 std::ostream&
 operator<<(std::ostream& os, const table_row& msg);
 
-using json = nlohmann::json;
-
 void to_json(json& j, const table_row& m);
 
 }
diff --git a/cpp/include/cucumber/messages/tag.hpp b/cpp/include/cucumber/messages/tag.hpp
index 0753c75e..4dfc54d0 100644
--- a/cpp/include/cucumber/messages/tag.hpp
+++ b/cpp/include/cucumber/messages/tag.hpp
@@ -9,6 +9,8 @@
 
 namespace cucumber::messages {
 
+using json = nlohmann::json;
+
 //
 // Represents the Tag message in Cucumber's message protocol
 // @see <a href=https://github.com/cucumber/messages>Github - Cucumber - Messages</a>
@@ -24,13 +26,14 @@ struct tag
     std::string id;
 
     std::string to_string() const;
+
+    void to_json(json& j) const;
+    std::string to_json() const;
 };
 
 std::ostream&
 operator<<(std::ostream& os, const tag& msg);
 
-using json = nlohmann::json;
-
 void to_json(json& j, const tag& m);
 
 }
diff --git a/cpp/include/cucumber/messages/test_case.hpp b/cpp/include/cucumber/messages/test_case.hpp
index 6029e6f8..56a578ff 100644
--- a/cpp/include/cucumber/messages/test_case.hpp
+++ b/cpp/include/cucumber/messages/test_case.hpp
@@ -9,6 +9,8 @@
 
 namespace cucumber::messages {
 
+using json = nlohmann::json;
+
 //
 // Represents the TestCase message in Cucumber's message protocol
 // @see <a href=https://github.com/cucumber/messages>Github - Cucumber - Messages</a>
@@ -26,13 +28,14 @@ struct test_case
     std::vector<cucumber::messages::test_step> test_steps;
 
     std::string to_string() const;
+
+    void to_json(json& j) const;
+    std::string to_json() const;
 };
 
 std::ostream&
 operator<<(std::ostream& os, const test_case& msg);
 
-using json = nlohmann::json;
-
 void to_json(json& j, const test_case& m);
 
 }
diff --git a/cpp/include/cucumber/messages/test_case_finished.hpp b/cpp/include/cucumber/messages/test_case_finished.hpp
index dc70e3fa..e92815dd 100644
--- a/cpp/include/cucumber/messages/test_case_finished.hpp
+++ b/cpp/include/cucumber/messages/test_case_finished.hpp
@@ -9,6 +9,8 @@
 
 namespace cucumber::messages {
 
+using json = nlohmann::json;
+
 //
 // Represents the TestCaseFinished message in Cucumber's message protocol
 // @see <a href=https://github.com/cucumber/messages>Github - Cucumber - Messages</a>
@@ -22,13 +24,14 @@ struct test_case_finished
     bool will_be_retried;
 
     std::string to_string() const;
+
+    void to_json(json& j) const;
+    std::string to_json() const;
 };
 
 std::ostream&
 operator<<(std::ostream& os, const test_case_finished& msg);
 
-using json = nlohmann::json;
-
 void to_json(json& j, const test_case_finished& m);
 
 }
diff --git a/cpp/include/cucumber/messages/test_case_started.hpp b/cpp/include/cucumber/messages/test_case_started.hpp
index 89359b5d..5fdc4d7f 100644
--- a/cpp/include/cucumber/messages/test_case_started.hpp
+++ b/cpp/include/cucumber/messages/test_case_started.hpp
@@ -9,6 +9,8 @@
 
 namespace cucumber::messages {
 
+using json = nlohmann::json;
+
 //
 // Represents the TestCaseStarted message in Cucumber's message protocol
 // @see <a href=https://github.com/cucumber/messages>Github - Cucumber - Messages</a>
@@ -24,13 +26,14 @@ struct test_case_started
     cucumber::messages::timestamp timestamp;
 
     std::string to_string() const;
+
+    void to_json(json& j) const;
+    std::string to_json() const;
 };
 
 std::ostream&
 operator<<(std::ostream& os, const test_case_started& msg);
 
-using json = nlohmann::json;
-
 void to_json(json& j, const test_case_started& m);
 
 }
diff --git a/cpp/include/cucumber/messages/test_run_finished.hpp b/cpp/include/cucumber/messages/test_run_finished.hpp
index b36181e0..df1d01e2 100644
--- a/cpp/include/cucumber/messages/test_run_finished.hpp
+++ b/cpp/include/cucumber/messages/test_run_finished.hpp
@@ -10,6 +10,8 @@
 
 namespace cucumber::messages {
 
+using json = nlohmann::json;
+
 //
 // Represents the TestRunFinished message in Cucumber's message protocol
 // @see <a href=https://github.com/cucumber/messages>Github - Cucumber - Messages</a>
@@ -24,13 +26,14 @@ struct test_run_finished
     cucumber::messages::exception exception;
 
     std::string to_string() const;
+
+    void to_json(json& j) const;
+    std::string to_json() const;
 };
 
 std::ostream&
 operator<<(std::ostream& os, const test_run_finished& msg);
 
-using json = nlohmann::json;
-
 void to_json(json& j, const test_run_finished& m);
 
 }
diff --git a/cpp/include/cucumber/messages/test_run_started.hpp b/cpp/include/cucumber/messages/test_run_started.hpp
index a2c1793a..0ba29f48 100644
--- a/cpp/include/cucumber/messages/test_run_started.hpp
+++ b/cpp/include/cucumber/messages/test_run_started.hpp
@@ -9,6 +9,8 @@
 
 namespace cucumber::messages {
 
+using json = nlohmann::json;
+
 //
 // Represents the TestRunStarted message in Cucumber's message protocol
 // @see <a href=https://github.com/cucumber/messages>Github - Cucumber - Messages</a>
@@ -20,13 +22,14 @@ struct test_run_started
     cucumber::messages::timestamp timestamp;
 
     std::string to_string() const;
+
+    void to_json(json& j) const;
+    std::string to_json() const;
 };
 
 std::ostream&
 operator<<(std::ostream& os, const test_run_started& msg);
 
-using json = nlohmann::json;
-
 void to_json(json& j, const test_run_started& m);
 
 }
diff --git a/cpp/include/cucumber/messages/test_step.hpp b/cpp/include/cucumber/messages/test_step.hpp
index b1af181f..c6d3bd40 100644
--- a/cpp/include/cucumber/messages/test_step.hpp
+++ b/cpp/include/cucumber/messages/test_step.hpp
@@ -9,6 +9,8 @@
 
 namespace cucumber::messages {
 
+using json = nlohmann::json;
+
 //
 // Represents the TestStep message in Cucumber's message protocol
 // @see <a href=https://github.com/cucumber/messages>Github - Cucumber - Messages</a>
@@ -27,13 +29,14 @@ struct test_step
     std::vector<cucumber::messages::step_match_arguments_list> step_match_arguments_lists;
 
     std::string to_string() const;
+
+    void to_json(json& j) const;
+    std::string to_json() const;
 };
 
 std::ostream&
 operator<<(std::ostream& os, const test_step& msg);
 
-using json = nlohmann::json;
-
 void to_json(json& j, const test_step& m);
 
 }
diff --git a/cpp/include/cucumber/messages/test_step_finished.hpp b/cpp/include/cucumber/messages/test_step_finished.hpp
index ac1f2e2c..80e34405 100644
--- a/cpp/include/cucumber/messages/test_step_finished.hpp
+++ b/cpp/include/cucumber/messages/test_step_finished.hpp
@@ -10,6 +10,8 @@
 
 namespace cucumber::messages {
 
+using json = nlohmann::json;
+
 //
 // Represents the TestStepFinished message in Cucumber's message protocol
 // @see <a href=https://github.com/cucumber/messages>Github - Cucumber - Messages</a>
@@ -24,13 +26,14 @@ struct test_step_finished
     cucumber::messages::timestamp timestamp;
 
     std::string to_string() const;
+
+    void to_json(json& j) const;
+    std::string to_json() const;
 };
 
 std::ostream&
 operator<<(std::ostream& os, const test_step_finished& msg);
 
-using json = nlohmann::json;
-
 void to_json(json& j, const test_step_finished& m);
 
 }
diff --git a/cpp/include/cucumber/messages/test_step_result.hpp b/cpp/include/cucumber/messages/test_step_result.hpp
index 5010c1df..99b838a8 100644
--- a/cpp/include/cucumber/messages/test_step_result.hpp
+++ b/cpp/include/cucumber/messages/test_step_result.hpp
@@ -11,6 +11,8 @@
 
 namespace cucumber::messages {
 
+using json = nlohmann::json;
+
 //
 // Represents the TestStepResult message in Cucumber's message protocol
 // @see <a href=https://github.com/cucumber/messages>Github - Cucumber - Messages</a>
@@ -25,13 +27,14 @@ struct test_step_result
     cucumber::messages::exception exception;
 
     std::string to_string() const;
+
+    void to_json(json& j) const;
+    std::string to_json() const;
 };
 
 std::ostream&
 operator<<(std::ostream& os, const test_step_result& msg);
 
-using json = nlohmann::json;
-
 void to_json(json& j, const test_step_result& m);
 
 }
diff --git a/cpp/include/cucumber/messages/test_step_started.hpp b/cpp/include/cucumber/messages/test_step_started.hpp
index f4f7a97c..bb29f967 100644
--- a/cpp/include/cucumber/messages/test_step_started.hpp
+++ b/cpp/include/cucumber/messages/test_step_started.hpp
@@ -9,6 +9,8 @@
 
 namespace cucumber::messages {
 
+using json = nlohmann::json;
+
 //
 // Represents the TestStepStarted message in Cucumber's message protocol
 // @see <a href=https://github.com/cucumber/messages>Github - Cucumber - Messages</a>
@@ -22,13 +24,14 @@ struct test_step_started
     cucumber::messages::timestamp timestamp;
 
     std::string to_string() const;
+
+    void to_json(json& j) const;
+    std::string to_json() const;
 };
 
 std::ostream&
 operator<<(std::ostream& os, const test_step_started& msg);
 
-using json = nlohmann::json;
-
 void to_json(json& j, const test_step_started& m);
 
 }
diff --git a/cpp/include/cucumber/messages/timestamp.hpp b/cpp/include/cucumber/messages/timestamp.hpp
index c17b0190..33e14f76 100644
--- a/cpp/include/cucumber/messages/timestamp.hpp
+++ b/cpp/include/cucumber/messages/timestamp.hpp
@@ -7,6 +7,8 @@
 
 namespace cucumber::messages {
 
+using json = nlohmann::json;
+
 //
 // Represents the Timestamp message in Cucumber's message protocol
 // @see <a href=https://github.com/cucumber/messages>Github - Cucumber - Messages</a>
@@ -19,13 +21,14 @@ struct timestamp
     std::size_t nanos;
 
     std::string to_string() const;
+
+    void to_json(json& j) const;
+    std::string to_json() const;
 };
 
 std::ostream&
 operator<<(std::ostream& os, const timestamp& msg);
 
-using json = nlohmann::json;
-
 void to_json(json& j, const timestamp& m);
 
 }
diff --git a/cpp/include/cucumber/messages/undefined_parameter_type.hpp b/cpp/include/cucumber/messages/undefined_parameter_type.hpp
index 6e75c084..4e0501fa 100644
--- a/cpp/include/cucumber/messages/undefined_parameter_type.hpp
+++ b/cpp/include/cucumber/messages/undefined_parameter_type.hpp
@@ -7,6 +7,8 @@
 
 namespace cucumber::messages {
 
+using json = nlohmann::json;
+
 //
 // Represents the UndefinedParameterType message in Cucumber's message protocol
 // @see <a href=https://github.com/cucumber/messages>Github - Cucumber - Messages</a>
@@ -19,13 +21,14 @@ struct undefined_parameter_type
     std::string name;
 
     std::string to_string() const;
+
+    void to_json(json& j) const;
+    std::string to_json() const;
 };
 
 std::ostream&
 operator<<(std::ostream& os, const undefined_parameter_type& msg);
 
-using json = nlohmann::json;
-
 void to_json(json& j, const undefined_parameter_type& m);
 
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/attachment.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/attachment.cpp
index 58e9bd58..1d349ee4 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/attachment.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/attachment.cpp
@@ -24,6 +24,34 @@ attachment::to_string() const
     return oss.str();
 }
 
+void
+attachment::to_json(json& j) const
+{
+    j = json{
+        { "body", body },
+        { "content_encoding", content_encoding },
+        { "file_name", file_name },
+        { "media_type", media_type },
+        { "source", source },
+        { "test_case_started_id", test_case_started_id },
+        { "test_step_id", test_step_id },
+        { "url", url }
+    };
+}
+
+std::string
+attachment::to_json() const
+{
+    std::ostringstream oss;
+    json j;
+
+    to_json(j);
+
+    oss << j;
+
+    return oss.str();
+}
+
 std::ostream&
 operator<<(std::ostream& os, const attachment& msg)
 {
@@ -33,17 +61,6 @@ operator<<(std::ostream& os, const attachment& msg)
 }
 
 void to_json(json& j, const attachment& m)
-{
-    j = json{
-        { "body", m.body },
-        { "content_encoding", m.content_encoding },
-        { "file_name", m.file_name },
-        { "media_type", m.media_type },
-        { "source", m.source },
-        { "test_case_started_id", m.test_case_started_id },
-        { "test_step_id", m.test_step_id },
-        { "url", m.url }
-    };
-}
+{ m.to_json(j); }
 
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/background.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/background.cpp
index 0c889587..17acfe28 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/background.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/background.cpp
@@ -22,6 +22,32 @@ background::to_string() const
     return oss.str();
 }
 
+void
+background::to_json(json& j) const
+{
+    j = json{
+        { "location", location },
+        { "keyword", keyword },
+        { "name", name },
+        { "description", description },
+        { "steps", steps },
+        { "id", id }
+    };
+}
+
+std::string
+background::to_json() const
+{
+    std::ostringstream oss;
+    json j;
+
+    to_json(j);
+
+    oss << j;
+
+    return oss.str();
+}
+
 std::ostream&
 operator<<(std::ostream& os, const background& msg)
 {
@@ -31,15 +57,6 @@ operator<<(std::ostream& os, const background& msg)
 }
 
 void to_json(json& j, const background& m)
-{
-    j = json{
-        { "location", m.location },
-        { "keyword", m.keyword },
-        { "name", m.name },
-        { "description", m.description },
-        { "steps", m.steps },
-        { "id", m.id }
-    };
-}
+{ m.to_json(j); }
 
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/ci.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/ci.cpp
index 78089e58..8da5de3e 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/ci.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/ci.cpp
@@ -20,6 +20,30 @@ ci::to_string() const
     return oss.str();
 }
 
+void
+ci::to_json(json& j) const
+{
+    j = json{
+        { "name", name },
+        { "url", url },
+        { "build_number", build_number },
+        { "git", git }
+    };
+}
+
+std::string
+ci::to_json() const
+{
+    std::ostringstream oss;
+    json j;
+
+    to_json(j);
+
+    oss << j;
+
+    return oss.str();
+}
+
 std::ostream&
 operator<<(std::ostream& os, const ci& msg)
 {
@@ -29,13 +53,6 @@ operator<<(std::ostream& os, const ci& msg)
 }
 
 void to_json(json& j, const ci& m)
-{
-    j = json{
-        { "name", m.name },
-        { "url", m.url },
-        { "build_number", m.build_number },
-        { "git", m.git }
-    };
-}
+{ m.to_json(j); }
 
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/comment.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/comment.cpp
index 77939091..4cf4b152 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/comment.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/comment.cpp
@@ -18,6 +18,28 @@ comment::to_string() const
     return oss.str();
 }
 
+void
+comment::to_json(json& j) const
+{
+    j = json{
+        { "location", location },
+        { "text", text }
+    };
+}
+
+std::string
+comment::to_json() const
+{
+    std::ostringstream oss;
+    json j;
+
+    to_json(j);
+
+    oss << j;
+
+    return oss.str();
+}
+
 std::ostream&
 operator<<(std::ostream& os, const comment& msg)
 {
@@ -27,11 +49,6 @@ operator<<(std::ostream& os, const comment& msg)
 }
 
 void to_json(json& j, const comment& m)
-{
-    j = json{
-        { "location", m.location },
-        { "text", m.text }
-    };
-}
+{ m.to_json(j); }
 
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/data_table.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/data_table.cpp
index 7f79ef01..98ef6348 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/data_table.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/data_table.cpp
@@ -18,6 +18,28 @@ data_table::to_string() const
     return oss.str();
 }
 
+void
+data_table::to_json(json& j) const
+{
+    j = json{
+        { "location", location },
+        { "rows", rows }
+    };
+}
+
+std::string
+data_table::to_json() const
+{
+    std::ostringstream oss;
+    json j;
+
+    to_json(j);
+
+    oss << j;
+
+    return oss.str();
+}
+
 std::ostream&
 operator<<(std::ostream& os, const data_table& msg)
 {
@@ -27,11 +49,6 @@ operator<<(std::ostream& os, const data_table& msg)
 }
 
 void to_json(json& j, const data_table& m)
-{
-    j = json{
-        { "location", m.location },
-        { "rows", m.rows }
-    };
-}
+{ m.to_json(j); }
 
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/doc_string.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/doc_string.cpp
index cc87d6a5..dd3a9653 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/doc_string.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/doc_string.cpp
@@ -20,6 +20,30 @@ doc_string::to_string() const
     return oss.str();
 }
 
+void
+doc_string::to_json(json& j) const
+{
+    j = json{
+        { "location", location },
+        { "media_type", media_type },
+        { "content", content },
+        { "delimiter", delimiter }
+    };
+}
+
+std::string
+doc_string::to_json() const
+{
+    std::ostringstream oss;
+    json j;
+
+    to_json(j);
+
+    oss << j;
+
+    return oss.str();
+}
+
 std::ostream&
 operator<<(std::ostream& os, const doc_string& msg)
 {
@@ -29,13 +53,6 @@ operator<<(std::ostream& os, const doc_string& msg)
 }
 
 void to_json(json& j, const doc_string& m)
-{
-    j = json{
-        { "location", m.location },
-        { "media_type", m.media_type },
-        { "content", m.content },
-        { "delimiter", m.delimiter }
-    };
-}
+{ m.to_json(j); }
 
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/duration.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/duration.cpp
index ce434cc0..e00580e8 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/duration.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/duration.cpp
@@ -18,6 +18,28 @@ duration::to_string() const
     return oss.str();
 }
 
+void
+duration::to_json(json& j) const
+{
+    j = json{
+        { "seconds", seconds },
+        { "nanos", nanos }
+    };
+}
+
+std::string
+duration::to_json() const
+{
+    std::ostringstream oss;
+    json j;
+
+    to_json(j);
+
+    oss << j;
+
+    return oss.str();
+}
+
 std::ostream&
 operator<<(std::ostream& os, const duration& msg)
 {
@@ -27,11 +49,6 @@ operator<<(std::ostream& os, const duration& msg)
 }
 
 void to_json(json& j, const duration& m)
-{
-    j = json{
-        { "seconds", m.seconds },
-        { "nanos", m.nanos }
-    };
-}
+{ m.to_json(j); }
 
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/envelope.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/envelope.cpp
index 26b29244..fe667118 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/envelope.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/envelope.cpp
@@ -33,6 +33,43 @@ envelope::to_string() const
     return oss.str();
 }
 
+void
+envelope::to_json(json& j) const
+{
+    j = json{
+        { "attachment", attachment },
+        { "gherkin_document", gherkin_document },
+        { "hook", hook },
+        { "meta", meta },
+        { "parameter_type", parameter_type },
+        { "parse_error", parse_error },
+        { "pickle", pickle },
+        { "source", source },
+        { "step_definition", step_definition },
+        { "test_case", test_case },
+        { "test_case_finished", test_case_finished },
+        { "test_case_started", test_case_started },
+        { "test_run_finished", test_run_finished },
+        { "test_run_started", test_run_started },
+        { "test_step_finished", test_step_finished },
+        { "test_step_started", test_step_started },
+        { "undefined_parameter_type", undefined_parameter_type }
+    };
+}
+
+std::string
+envelope::to_json() const
+{
+    std::ostringstream oss;
+    json j;
+
+    to_json(j);
+
+    oss << j;
+
+    return oss.str();
+}
+
 std::ostream&
 operator<<(std::ostream& os, const envelope& msg)
 {
@@ -42,26 +79,6 @@ operator<<(std::ostream& os, const envelope& msg)
 }
 
 void to_json(json& j, const envelope& m)
-{
-    j = json{
-        { "attachment", m.attachment },
-        { "gherkin_document", m.gherkin_document },
-        { "hook", m.hook },
-        { "meta", m.meta },
-        { "parameter_type", m.parameter_type },
-        { "parse_error", m.parse_error },
-        { "pickle", m.pickle },
-        { "source", m.source },
-        { "step_definition", m.step_definition },
-        { "test_case", m.test_case },
-        { "test_case_finished", m.test_case_finished },
-        { "test_case_started", m.test_case_started },
-        { "test_run_finished", m.test_run_finished },
-        { "test_run_started", m.test_run_started },
-        { "test_step_finished", m.test_step_finished },
-        { "test_step_started", m.test_step_started },
-        { "undefined_parameter_type", m.undefined_parameter_type }
-    };
-}
+{ m.to_json(j); }
 
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/examples.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/examples.cpp
index ba425938..52dc2438 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/examples.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/examples.cpp
@@ -24,6 +24,34 @@ examples::to_string() const
     return oss.str();
 }
 
+void
+examples::to_json(json& j) const
+{
+    j = json{
+        { "location", location },
+        { "tags", tags },
+        { "keyword", keyword },
+        { "name", name },
+        { "description", description },
+        { "table_header", table_header },
+        { "table_body", table_body },
+        { "id", id }
+    };
+}
+
+std::string
+examples::to_json() const
+{
+    std::ostringstream oss;
+    json j;
+
+    to_json(j);
+
+    oss << j;
+
+    return oss.str();
+}
+
 std::ostream&
 operator<<(std::ostream& os, const examples& msg)
 {
@@ -33,17 +61,6 @@ operator<<(std::ostream& os, const examples& msg)
 }
 
 void to_json(json& j, const examples& m)
-{
-    j = json{
-        { "location", m.location },
-        { "tags", m.tags },
-        { "keyword", m.keyword },
-        { "name", m.name },
-        { "description", m.description },
-        { "table_header", m.table_header },
-        { "table_body", m.table_body },
-        { "id", m.id }
-    };
-}
+{ m.to_json(j); }
 
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/exception.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/exception.cpp
index c04a0fe8..cf7ebcd0 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/exception.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/exception.cpp
@@ -18,6 +18,28 @@ exception::to_string() const
     return oss.str();
 }
 
+void
+exception::to_json(json& j) const
+{
+    j = json{
+        { "type", type },
+        { "message", message }
+    };
+}
+
+std::string
+exception::to_json() const
+{
+    std::ostringstream oss;
+    json j;
+
+    to_json(j);
+
+    oss << j;
+
+    return oss.str();
+}
+
 std::ostream&
 operator<<(std::ostream& os, const exception& msg)
 {
@@ -27,11 +49,6 @@ operator<<(std::ostream& os, const exception& msg)
 }
 
 void to_json(json& j, const exception& m)
-{
-    j = json{
-        { "type", m.type },
-        { "message", m.message }
-    };
-}
+{ m.to_json(j); }
 
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/feature.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/feature.cpp
index c9204476..58d852a0 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/feature.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/feature.cpp
@@ -23,6 +23,33 @@ feature::to_string() const
     return oss.str();
 }
 
+void
+feature::to_json(json& j) const
+{
+    j = json{
+        { "location", location },
+        { "tags", tags },
+        { "language", language },
+        { "keyword", keyword },
+        { "name", name },
+        { "description", description },
+        { "children", children }
+    };
+}
+
+std::string
+feature::to_json() const
+{
+    std::ostringstream oss;
+    json j;
+
+    to_json(j);
+
+    oss << j;
+
+    return oss.str();
+}
+
 std::ostream&
 operator<<(std::ostream& os, const feature& msg)
 {
@@ -32,16 +59,6 @@ operator<<(std::ostream& os, const feature& msg)
 }
 
 void to_json(json& j, const feature& m)
-{
-    j = json{
-        { "location", m.location },
-        { "tags", m.tags },
-        { "language", m.language },
-        { "keyword", m.keyword },
-        { "name", m.name },
-        { "description", m.description },
-        { "children", m.children }
-    };
-}
+{ m.to_json(j); }
 
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/feature_child.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/feature_child.cpp
index 00106da1..8b4d4388 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/feature_child.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/feature_child.cpp
@@ -19,6 +19,29 @@ feature_child::to_string() const
     return oss.str();
 }
 
+void
+feature_child::to_json(json& j) const
+{
+    j = json{
+        { "rule", rule },
+        { "background", background },
+        { "scenario", scenario }
+    };
+}
+
+std::string
+feature_child::to_json() const
+{
+    std::ostringstream oss;
+    json j;
+
+    to_json(j);
+
+    oss << j;
+
+    return oss.str();
+}
+
 std::ostream&
 operator<<(std::ostream& os, const feature_child& msg)
 {
@@ -28,12 +51,6 @@ operator<<(std::ostream& os, const feature_child& msg)
 }
 
 void to_json(json& j, const feature_child& m)
-{
-    j = json{
-        { "rule", m.rule },
-        { "background", m.background },
-        { "scenario", m.scenario }
-    };
-}
+{ m.to_json(j); }
 
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/gherkin_document.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/gherkin_document.cpp
index bbf0a374..3f810d55 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/gherkin_document.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/gherkin_document.cpp
@@ -19,6 +19,29 @@ gherkin_document::to_string() const
     return oss.str();
 }
 
+void
+gherkin_document::to_json(json& j) const
+{
+    j = json{
+        { "uri", uri },
+        { "feature", feature },
+        { "comments", comments }
+    };
+}
+
+std::string
+gherkin_document::to_json() const
+{
+    std::ostringstream oss;
+    json j;
+
+    to_json(j);
+
+    oss << j;
+
+    return oss.str();
+}
+
 std::ostream&
 operator<<(std::ostream& os, const gherkin_document& msg)
 {
@@ -28,12 +51,6 @@ operator<<(std::ostream& os, const gherkin_document& msg)
 }
 
 void to_json(json& j, const gherkin_document& m)
-{
-    j = json{
-        { "uri", m.uri },
-        { "feature", m.feature },
-        { "comments", m.comments }
-    };
-}
+{ m.to_json(j); }
 
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/git.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/git.cpp
index 58dac667..6a14e544 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/git.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/git.cpp
@@ -20,6 +20,30 @@ git::to_string() const
     return oss.str();
 }
 
+void
+git::to_json(json& j) const
+{
+    j = json{
+        { "remote", remote },
+        { "revision", revision },
+        { "branch", branch },
+        { "tag", tag }
+    };
+}
+
+std::string
+git::to_json() const
+{
+    std::ostringstream oss;
+    json j;
+
+    to_json(j);
+
+    oss << j;
+
+    return oss.str();
+}
+
 std::ostream&
 operator<<(std::ostream& os, const git& msg)
 {
@@ -29,13 +53,6 @@ operator<<(std::ostream& os, const git& msg)
 }
 
 void to_json(json& j, const git& m)
-{
-    j = json{
-        { "remote", m.remote },
-        { "revision", m.revision },
-        { "branch", m.branch },
-        { "tag", m.tag }
-    };
-}
+{ m.to_json(j); }
 
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/group.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/group.cpp
index c6809211..af14d867 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/group.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/group.cpp
@@ -19,6 +19,29 @@ group::to_string() const
     return oss.str();
 }
 
+void
+group::to_json(json& j) const
+{
+    j = json{
+        { "children", children },
+        { "start", start },
+        { "value", value }
+    };
+}
+
+std::string
+group::to_json() const
+{
+    std::ostringstream oss;
+    json j;
+
+    to_json(j);
+
+    oss << j;
+
+    return oss.str();
+}
+
 std::ostream&
 operator<<(std::ostream& os, const group& msg)
 {
@@ -28,12 +51,6 @@ operator<<(std::ostream& os, const group& msg)
 }
 
 void to_json(json& j, const group& m)
-{
-    j = json{
-        { "children", m.children },
-        { "start", m.start },
-        { "value", m.value }
-    };
-}
+{ m.to_json(j); }
 
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/hook.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/hook.cpp
index aac8d743..1625bf94 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/hook.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/hook.cpp
@@ -20,6 +20,30 @@ hook::to_string() const
     return oss.str();
 }
 
+void
+hook::to_json(json& j) const
+{
+    j = json{
+        { "id", id },
+        { "name", name },
+        { "source_reference", source_reference },
+        { "tag_expression", tag_expression }
+    };
+}
+
+std::string
+hook::to_json() const
+{
+    std::ostringstream oss;
+    json j;
+
+    to_json(j);
+
+    oss << j;
+
+    return oss.str();
+}
+
 std::ostream&
 operator<<(std::ostream& os, const hook& msg)
 {
@@ -29,13 +53,6 @@ operator<<(std::ostream& os, const hook& msg)
 }
 
 void to_json(json& j, const hook& m)
-{
-    j = json{
-        { "id", m.id },
-        { "name", m.name },
-        { "source_reference", m.source_reference },
-        { "tag_expression", m.tag_expression }
-    };
-}
+{ m.to_json(j); }
 
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/java_method.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/java_method.cpp
index 39283fbb..4c997521 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/java_method.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/java_method.cpp
@@ -19,6 +19,29 @@ java_method::to_string() const
     return oss.str();
 }
 
+void
+java_method::to_json(json& j) const
+{
+    j = json{
+        { "class_name", class_name },
+        { "method_name", method_name },
+        { "method_parameter_types", method_parameter_types }
+    };
+}
+
+std::string
+java_method::to_json() const
+{
+    std::ostringstream oss;
+    json j;
+
+    to_json(j);
+
+    oss << j;
+
+    return oss.str();
+}
+
 std::ostream&
 operator<<(std::ostream& os, const java_method& msg)
 {
@@ -28,12 +51,6 @@ operator<<(std::ostream& os, const java_method& msg)
 }
 
 void to_json(json& j, const java_method& m)
-{
-    j = json{
-        { "class_name", m.class_name },
-        { "method_name", m.method_name },
-        { "method_parameter_types", m.method_parameter_types }
-    };
-}
+{ m.to_json(j); }
 
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/java_stack_trace_element.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/java_stack_trace_element.cpp
index a9792b19..0731a4f3 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/java_stack_trace_element.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/java_stack_trace_element.cpp
@@ -19,6 +19,29 @@ java_stack_trace_element::to_string() const
     return oss.str();
 }
 
+void
+java_stack_trace_element::to_json(json& j) const
+{
+    j = json{
+        { "class_name", class_name },
+        { "file_name", file_name },
+        { "method_name", method_name }
+    };
+}
+
+std::string
+java_stack_trace_element::to_json() const
+{
+    std::ostringstream oss;
+    json j;
+
+    to_json(j);
+
+    oss << j;
+
+    return oss.str();
+}
+
 std::ostream&
 operator<<(std::ostream& os, const java_stack_trace_element& msg)
 {
@@ -28,12 +51,6 @@ operator<<(std::ostream& os, const java_stack_trace_element& msg)
 }
 
 void to_json(json& j, const java_stack_trace_element& m)
-{
-    j = json{
-        { "class_name", m.class_name },
-        { "file_name", m.file_name },
-        { "method_name", m.method_name }
-    };
-}
+{ m.to_json(j); }
 
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/location.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/location.cpp
index cdee8e5b..805b0e30 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/location.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/location.cpp
@@ -18,6 +18,28 @@ location::to_string() const
     return oss.str();
 }
 
+void
+location::to_json(json& j) const
+{
+    j = json{
+        { "line", line },
+        { "column", column }
+    };
+}
+
+std::string
+location::to_json() const
+{
+    std::ostringstream oss;
+    json j;
+
+    to_json(j);
+
+    oss << j;
+
+    return oss.str();
+}
+
 std::ostream&
 operator<<(std::ostream& os, const location& msg)
 {
@@ -27,11 +49,6 @@ operator<<(std::ostream& os, const location& msg)
 }
 
 void to_json(json& j, const location& m)
-{
-    j = json{
-        { "line", m.line },
-        { "column", m.column }
-    };
-}
+{ m.to_json(j); }
 
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/meta.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/meta.cpp
index edddb266..04dee7e0 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/meta.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/meta.cpp
@@ -22,6 +22,32 @@ meta::to_string() const
     return oss.str();
 }
 
+void
+meta::to_json(json& j) const
+{
+    j = json{
+        { "protocol_version", protocol_version },
+        { "implementation", implementation },
+        { "runtime", runtime },
+        { "os", os },
+        { "cpu", cpu },
+        { "ci", ci }
+    };
+}
+
+std::string
+meta::to_json() const
+{
+    std::ostringstream oss;
+    json j;
+
+    to_json(j);
+
+    oss << j;
+
+    return oss.str();
+}
+
 std::ostream&
 operator<<(std::ostream& os, const meta& msg)
 {
@@ -31,15 +57,6 @@ operator<<(std::ostream& os, const meta& msg)
 }
 
 void to_json(json& j, const meta& m)
-{
-    j = json{
-        { "protocol_version", m.protocol_version },
-        { "implementation", m.implementation },
-        { "runtime", m.runtime },
-        { "os", m.os },
-        { "cpu", m.cpu },
-        { "ci", m.ci }
-    };
-}
+{ m.to_json(j); }
 
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/parameter_type.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/parameter_type.cpp
index d3846948..aa6db871 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/parameter_type.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/parameter_type.cpp
@@ -22,6 +22,32 @@ parameter_type::to_string() const
     return oss.str();
 }
 
+void
+parameter_type::to_json(json& j) const
+{
+    j = json{
+        { "name", name },
+        { "regular_expressions", regular_expressions },
+        { "prefer_for_regular_expression_match", prefer_for_regular_expression_match },
+        { "use_for_snippets", use_for_snippets },
+        { "id", id },
+        { "source_reference", source_reference }
+    };
+}
+
+std::string
+parameter_type::to_json() const
+{
+    std::ostringstream oss;
+    json j;
+
+    to_json(j);
+
+    oss << j;
+
+    return oss.str();
+}
+
 std::ostream&
 operator<<(std::ostream& os, const parameter_type& msg)
 {
@@ -31,15 +57,6 @@ operator<<(std::ostream& os, const parameter_type& msg)
 }
 
 void to_json(json& j, const parameter_type& m)
-{
-    j = json{
-        { "name", m.name },
-        { "regular_expressions", m.regular_expressions },
-        { "prefer_for_regular_expression_match", m.prefer_for_regular_expression_match },
-        { "use_for_snippets", m.use_for_snippets },
-        { "id", m.id },
-        { "source_reference", m.source_reference }
-    };
-}
+{ m.to_json(j); }
 
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/parse_error.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/parse_error.cpp
index c73f49fc..0d44c64f 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/parse_error.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/parse_error.cpp
@@ -18,6 +18,28 @@ parse_error::to_string() const
     return oss.str();
 }
 
+void
+parse_error::to_json(json& j) const
+{
+    j = json{
+        { "source", source },
+        { "message", message }
+    };
+}
+
+std::string
+parse_error::to_json() const
+{
+    std::ostringstream oss;
+    json j;
+
+    to_json(j);
+
+    oss << j;
+
+    return oss.str();
+}
+
 std::ostream&
 operator<<(std::ostream& os, const parse_error& msg)
 {
@@ -27,11 +49,6 @@ operator<<(std::ostream& os, const parse_error& msg)
 }
 
 void to_json(json& j, const parse_error& m)
-{
-    j = json{
-        { "source", m.source },
-        { "message", m.message }
-    };
-}
+{ m.to_json(j); }
 
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/pickle.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/pickle.cpp
index d6c3b9e1..2347ff2c 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/pickle.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/pickle.cpp
@@ -23,6 +23,33 @@ pickle::to_string() const
     return oss.str();
 }
 
+void
+pickle::to_json(json& j) const
+{
+    j = json{
+        { "id", id },
+        { "uri", uri },
+        { "name", name },
+        { "language", language },
+        { "steps", steps },
+        { "tags", tags },
+        { "ast_node_ids", ast_node_ids }
+    };
+}
+
+std::string
+pickle::to_json() const
+{
+    std::ostringstream oss;
+    json j;
+
+    to_json(j);
+
+    oss << j;
+
+    return oss.str();
+}
+
 std::ostream&
 operator<<(std::ostream& os, const pickle& msg)
 {
@@ -32,16 +59,6 @@ operator<<(std::ostream& os, const pickle& msg)
 }
 
 void to_json(json& j, const pickle& m)
-{
-    j = json{
-        { "id", m.id },
-        { "uri", m.uri },
-        { "name", m.name },
-        { "language", m.language },
-        { "steps", m.steps },
-        { "tags", m.tags },
-        { "ast_node_ids", m.ast_node_ids }
-    };
-}
+{ m.to_json(j); }
 
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_doc_string.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_doc_string.cpp
index 265f3728..ddababf2 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_doc_string.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_doc_string.cpp
@@ -18,6 +18,28 @@ pickle_doc_string::to_string() const
     return oss.str();
 }
 
+void
+pickle_doc_string::to_json(json& j) const
+{
+    j = json{
+        { "media_type", media_type },
+        { "content", content }
+    };
+}
+
+std::string
+pickle_doc_string::to_json() const
+{
+    std::ostringstream oss;
+    json j;
+
+    to_json(j);
+
+    oss << j;
+
+    return oss.str();
+}
+
 std::ostream&
 operator<<(std::ostream& os, const pickle_doc_string& msg)
 {
@@ -27,11 +49,6 @@ operator<<(std::ostream& os, const pickle_doc_string& msg)
 }
 
 void to_json(json& j, const pickle_doc_string& m)
-{
-    j = json{
-        { "media_type", m.media_type },
-        { "content", m.content }
-    };
-}
+{ m.to_json(j); }
 
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_step.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_step.cpp
index 8d29245e..a56db7b3 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_step.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_step.cpp
@@ -21,6 +21,31 @@ pickle_step::to_string() const
     return oss.str();
 }
 
+void
+pickle_step::to_json(json& j) const
+{
+    j = json{
+        { "argument", argument },
+        { "ast_node_ids", ast_node_ids },
+        { "id", id },
+        { "type", type },
+        { "text", text }
+    };
+}
+
+std::string
+pickle_step::to_json() const
+{
+    std::ostringstream oss;
+    json j;
+
+    to_json(j);
+
+    oss << j;
+
+    return oss.str();
+}
+
 std::ostream&
 operator<<(std::ostream& os, const pickle_step& msg)
 {
@@ -30,14 +55,6 @@ operator<<(std::ostream& os, const pickle_step& msg)
 }
 
 void to_json(json& j, const pickle_step& m)
-{
-    j = json{
-        { "argument", m.argument },
-        { "ast_node_ids", m.ast_node_ids },
-        { "id", m.id },
-        { "type", m.type },
-        { "text", m.text }
-    };
-}
+{ m.to_json(j); }
 
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_step_argument.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_step_argument.cpp
index 2e080ec1..a9247071 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_step_argument.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_step_argument.cpp
@@ -18,6 +18,28 @@ pickle_step_argument::to_string() const
     return oss.str();
 }
 
+void
+pickle_step_argument::to_json(json& j) const
+{
+    j = json{
+        { "doc_string", doc_string },
+        { "data_table", data_table }
+    };
+}
+
+std::string
+pickle_step_argument::to_json() const
+{
+    std::ostringstream oss;
+    json j;
+
+    to_json(j);
+
+    oss << j;
+
+    return oss.str();
+}
+
 std::ostream&
 operator<<(std::ostream& os, const pickle_step_argument& msg)
 {
@@ -27,11 +49,6 @@ operator<<(std::ostream& os, const pickle_step_argument& msg)
 }
 
 void to_json(json& j, const pickle_step_argument& m)
-{
-    j = json{
-        { "doc_string", m.doc_string },
-        { "data_table", m.data_table }
-    };
-}
+{ m.to_json(j); }
 
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_table.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_table.cpp
index 5940b283..9c9e6cec 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_table.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_table.cpp
@@ -17,6 +17,27 @@ pickle_table::to_string() const
     return oss.str();
 }
 
+void
+pickle_table::to_json(json& j) const
+{
+    j = json{
+        { "rows", rows }
+    };
+}
+
+std::string
+pickle_table::to_json() const
+{
+    std::ostringstream oss;
+    json j;
+
+    to_json(j);
+
+    oss << j;
+
+    return oss.str();
+}
+
 std::ostream&
 operator<<(std::ostream& os, const pickle_table& msg)
 {
@@ -26,10 +47,6 @@ operator<<(std::ostream& os, const pickle_table& msg)
 }
 
 void to_json(json& j, const pickle_table& m)
-{
-    j = json{
-        { "rows", m.rows }
-    };
-}
+{ m.to_json(j); }
 
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_table_cell.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_table_cell.cpp
index faa73f03..6e063781 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_table_cell.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_table_cell.cpp
@@ -17,6 +17,27 @@ pickle_table_cell::to_string() const
     return oss.str();
 }
 
+void
+pickle_table_cell::to_json(json& j) const
+{
+    j = json{
+        { "value", value }
+    };
+}
+
+std::string
+pickle_table_cell::to_json() const
+{
+    std::ostringstream oss;
+    json j;
+
+    to_json(j);
+
+    oss << j;
+
+    return oss.str();
+}
+
 std::ostream&
 operator<<(std::ostream& os, const pickle_table_cell& msg)
 {
@@ -26,10 +47,6 @@ operator<<(std::ostream& os, const pickle_table_cell& msg)
 }
 
 void to_json(json& j, const pickle_table_cell& m)
-{
-    j = json{
-        { "value", m.value }
-    };
-}
+{ m.to_json(j); }
 
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_table_row.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_table_row.cpp
index 4175b163..505f140b 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_table_row.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_table_row.cpp
@@ -17,6 +17,27 @@ pickle_table_row::to_string() const
     return oss.str();
 }
 
+void
+pickle_table_row::to_json(json& j) const
+{
+    j = json{
+        { "cells", cells }
+    };
+}
+
+std::string
+pickle_table_row::to_json() const
+{
+    std::ostringstream oss;
+    json j;
+
+    to_json(j);
+
+    oss << j;
+
+    return oss.str();
+}
+
 std::ostream&
 operator<<(std::ostream& os, const pickle_table_row& msg)
 {
@@ -26,10 +47,6 @@ operator<<(std::ostream& os, const pickle_table_row& msg)
 }
 
 void to_json(json& j, const pickle_table_row& m)
-{
-    j = json{
-        { "cells", m.cells }
-    };
-}
+{ m.to_json(j); }
 
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_tag.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_tag.cpp
index c095c5e1..2923a9b4 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_tag.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_tag.cpp
@@ -18,6 +18,28 @@ pickle_tag::to_string() const
     return oss.str();
 }
 
+void
+pickle_tag::to_json(json& j) const
+{
+    j = json{
+        { "name", name },
+        { "ast_node_id", ast_node_id }
+    };
+}
+
+std::string
+pickle_tag::to_json() const
+{
+    std::ostringstream oss;
+    json j;
+
+    to_json(j);
+
+    oss << j;
+
+    return oss.str();
+}
+
 std::ostream&
 operator<<(std::ostream& os, const pickle_tag& msg)
 {
@@ -27,11 +49,6 @@ operator<<(std::ostream& os, const pickle_tag& msg)
 }
 
 void to_json(json& j, const pickle_tag& m)
-{
-    j = json{
-        { "name", m.name },
-        { "ast_node_id", m.ast_node_id }
-    };
-}
+{ m.to_json(j); }
 
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/product.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/product.cpp
index 5ef33e72..c47a52bc 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/product.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/product.cpp
@@ -18,6 +18,28 @@ product::to_string() const
     return oss.str();
 }
 
+void
+product::to_json(json& j) const
+{
+    j = json{
+        { "name", name },
+        { "version", version }
+    };
+}
+
+std::string
+product::to_json() const
+{
+    std::ostringstream oss;
+    json j;
+
+    to_json(j);
+
+    oss << j;
+
+    return oss.str();
+}
+
 std::ostream&
 operator<<(std::ostream& os, const product& msg)
 {
@@ -27,11 +49,6 @@ operator<<(std::ostream& os, const product& msg)
 }
 
 void to_json(json& j, const product& m)
-{
-    j = json{
-        { "name", m.name },
-        { "version", m.version }
-    };
-}
+{ m.to_json(j); }
 
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/rule.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/rule.cpp
index 2ef5a32c..f5b3ea57 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/rule.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/rule.cpp
@@ -23,6 +23,33 @@ rule::to_string() const
     return oss.str();
 }
 
+void
+rule::to_json(json& j) const
+{
+    j = json{
+        { "location", location },
+        { "tags", tags },
+        { "keyword", keyword },
+        { "name", name },
+        { "description", description },
+        { "children", children },
+        { "id", id }
+    };
+}
+
+std::string
+rule::to_json() const
+{
+    std::ostringstream oss;
+    json j;
+
+    to_json(j);
+
+    oss << j;
+
+    return oss.str();
+}
+
 std::ostream&
 operator<<(std::ostream& os, const rule& msg)
 {
@@ -32,16 +59,6 @@ operator<<(std::ostream& os, const rule& msg)
 }
 
 void to_json(json& j, const rule& m)
-{
-    j = json{
-        { "location", m.location },
-        { "tags", m.tags },
-        { "keyword", m.keyword },
-        { "name", m.name },
-        { "description", m.description },
-        { "children", m.children },
-        { "id", m.id }
-    };
-}
+{ m.to_json(j); }
 
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/rule_child.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/rule_child.cpp
index b309cff1..afda9f59 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/rule_child.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/rule_child.cpp
@@ -18,6 +18,28 @@ rule_child::to_string() const
     return oss.str();
 }
 
+void
+rule_child::to_json(json& j) const
+{
+    j = json{
+        { "background", background },
+        { "scenario", scenario }
+    };
+}
+
+std::string
+rule_child::to_json() const
+{
+    std::ostringstream oss;
+    json j;
+
+    to_json(j);
+
+    oss << j;
+
+    return oss.str();
+}
+
 std::ostream&
 operator<<(std::ostream& os, const rule_child& msg)
 {
@@ -27,11 +49,6 @@ operator<<(std::ostream& os, const rule_child& msg)
 }
 
 void to_json(json& j, const rule_child& m)
-{
-    j = json{
-        { "background", m.background },
-        { "scenario", m.scenario }
-    };
-}
+{ m.to_json(j); }
 
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/scenario.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/scenario.cpp
index 6b95f43d..fbaa9d82 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/scenario.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/scenario.cpp
@@ -24,6 +24,34 @@ scenario::to_string() const
     return oss.str();
 }
 
+void
+scenario::to_json(json& j) const
+{
+    j = json{
+        { "location", location },
+        { "tags", tags },
+        { "keyword", keyword },
+        { "name", name },
+        { "description", description },
+        { "steps", steps },
+        { "examples", examples },
+        { "id", id }
+    };
+}
+
+std::string
+scenario::to_json() const
+{
+    std::ostringstream oss;
+    json j;
+
+    to_json(j);
+
+    oss << j;
+
+    return oss.str();
+}
+
 std::ostream&
 operator<<(std::ostream& os, const scenario& msg)
 {
@@ -33,17 +61,6 @@ operator<<(std::ostream& os, const scenario& msg)
 }
 
 void to_json(json& j, const scenario& m)
-{
-    j = json{
-        { "location", m.location },
-        { "tags", m.tags },
-        { "keyword", m.keyword },
-        { "name", m.name },
-        { "description", m.description },
-        { "steps", m.steps },
-        { "examples", m.examples },
-        { "id", m.id }
-    };
-}
+{ m.to_json(j); }
 
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/source.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/source.cpp
index bd2ff5fb..0c0979dd 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/source.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/source.cpp
@@ -19,6 +19,29 @@ source::to_string() const
     return oss.str();
 }
 
+void
+source::to_json(json& j) const
+{
+    j = json{
+        { "uri", uri },
+        { "data", data },
+        { "media_type", media_type }
+    };
+}
+
+std::string
+source::to_json() const
+{
+    std::ostringstream oss;
+    json j;
+
+    to_json(j);
+
+    oss << j;
+
+    return oss.str();
+}
+
 std::ostream&
 operator<<(std::ostream& os, const source& msg)
 {
@@ -28,12 +51,6 @@ operator<<(std::ostream& os, const source& msg)
 }
 
 void to_json(json& j, const source& m)
-{
-    j = json{
-        { "uri", m.uri },
-        { "data", m.data },
-        { "media_type", m.media_type }
-    };
-}
+{ m.to_json(j); }
 
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/source_reference.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/source_reference.cpp
index 84bfaa03..a140f648 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/source_reference.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/source_reference.cpp
@@ -20,6 +20,30 @@ source_reference::to_string() const
     return oss.str();
 }
 
+void
+source_reference::to_json(json& j) const
+{
+    j = json{
+        { "uri", uri },
+        { "java_method", java_method },
+        { "java_stack_trace_element", java_stack_trace_element },
+        { "location", location }
+    };
+}
+
+std::string
+source_reference::to_json() const
+{
+    std::ostringstream oss;
+    json j;
+
+    to_json(j);
+
+    oss << j;
+
+    return oss.str();
+}
+
 std::ostream&
 operator<<(std::ostream& os, const source_reference& msg)
 {
@@ -29,13 +53,6 @@ operator<<(std::ostream& os, const source_reference& msg)
 }
 
 void to_json(json& j, const source_reference& m)
-{
-    j = json{
-        { "uri", m.uri },
-        { "java_method", m.java_method },
-        { "java_stack_trace_element", m.java_stack_trace_element },
-        { "location", m.location }
-    };
-}
+{ m.to_json(j); }
 
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/step.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/step.cpp
index ce81ff3e..dbb2d6a2 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/step.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/step.cpp
@@ -23,6 +23,33 @@ step::to_string() const
     return oss.str();
 }
 
+void
+step::to_json(json& j) const
+{
+    j = json{
+        { "location", location },
+        { "keyword", keyword },
+        { "keyword_type", keyword_type },
+        { "text", text },
+        { "doc_string", doc_string },
+        { "data_table", data_table },
+        { "id", id }
+    };
+}
+
+std::string
+step::to_json() const
+{
+    std::ostringstream oss;
+    json j;
+
+    to_json(j);
+
+    oss << j;
+
+    return oss.str();
+}
+
 std::ostream&
 operator<<(std::ostream& os, const step& msg)
 {
@@ -32,16 +59,6 @@ operator<<(std::ostream& os, const step& msg)
 }
 
 void to_json(json& j, const step& m)
-{
-    j = json{
-        { "location", m.location },
-        { "keyword", m.keyword },
-        { "keyword_type", m.keyword_type },
-        { "text", m.text },
-        { "doc_string", m.doc_string },
-        { "data_table", m.data_table },
-        { "id", m.id }
-    };
-}
+{ m.to_json(j); }
 
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/step_definition.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/step_definition.cpp
index 94ac9d6c..daabac54 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/step_definition.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/step_definition.cpp
@@ -19,6 +19,29 @@ step_definition::to_string() const
     return oss.str();
 }
 
+void
+step_definition::to_json(json& j) const
+{
+    j = json{
+        { "id", id },
+        { "pattern", pattern },
+        { "source_reference", source_reference }
+    };
+}
+
+std::string
+step_definition::to_json() const
+{
+    std::ostringstream oss;
+    json j;
+
+    to_json(j);
+
+    oss << j;
+
+    return oss.str();
+}
+
 std::ostream&
 operator<<(std::ostream& os, const step_definition& msg)
 {
@@ -28,12 +51,6 @@ operator<<(std::ostream& os, const step_definition& msg)
 }
 
 void to_json(json& j, const step_definition& m)
-{
-    j = json{
-        { "id", m.id },
-        { "pattern", m.pattern },
-        { "source_reference", m.source_reference }
-    };
-}
+{ m.to_json(j); }
 
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/step_definition_pattern.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/step_definition_pattern.cpp
index 3f8d88b3..28a35afa 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/step_definition_pattern.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/step_definition_pattern.cpp
@@ -18,6 +18,28 @@ step_definition_pattern::to_string() const
     return oss.str();
 }
 
+void
+step_definition_pattern::to_json(json& j) const
+{
+    j = json{
+        { "source", source },
+        { "type", type }
+    };
+}
+
+std::string
+step_definition_pattern::to_json() const
+{
+    std::ostringstream oss;
+    json j;
+
+    to_json(j);
+
+    oss << j;
+
+    return oss.str();
+}
+
 std::ostream&
 operator<<(std::ostream& os, const step_definition_pattern& msg)
 {
@@ -27,11 +49,6 @@ operator<<(std::ostream& os, const step_definition_pattern& msg)
 }
 
 void to_json(json& j, const step_definition_pattern& m)
-{
-    j = json{
-        { "source", m.source },
-        { "type", m.type }
-    };
-}
+{ m.to_json(j); }
 
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/step_match_argument.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/step_match_argument.cpp
index 292b5a99..a02845bf 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/step_match_argument.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/step_match_argument.cpp
@@ -18,6 +18,28 @@ step_match_argument::to_string() const
     return oss.str();
 }
 
+void
+step_match_argument::to_json(json& j) const
+{
+    j = json{
+        { "group", group },
+        { "parameter_type_name", parameter_type_name }
+    };
+}
+
+std::string
+step_match_argument::to_json() const
+{
+    std::ostringstream oss;
+    json j;
+
+    to_json(j);
+
+    oss << j;
+
+    return oss.str();
+}
+
 std::ostream&
 operator<<(std::ostream& os, const step_match_argument& msg)
 {
@@ -27,11 +49,6 @@ operator<<(std::ostream& os, const step_match_argument& msg)
 }
 
 void to_json(json& j, const step_match_argument& m)
-{
-    j = json{
-        { "group", m.group },
-        { "parameter_type_name", m.parameter_type_name }
-    };
-}
+{ m.to_json(j); }
 
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/step_match_arguments_list.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/step_match_arguments_list.cpp
index d13f10ce..c833025a 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/step_match_arguments_list.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/step_match_arguments_list.cpp
@@ -17,6 +17,27 @@ step_match_arguments_list::to_string() const
     return oss.str();
 }
 
+void
+step_match_arguments_list::to_json(json& j) const
+{
+    j = json{
+        { "step_match_arguments", step_match_arguments }
+    };
+}
+
+std::string
+step_match_arguments_list::to_json() const
+{
+    std::ostringstream oss;
+    json j;
+
+    to_json(j);
+
+    oss << j;
+
+    return oss.str();
+}
+
 std::ostream&
 operator<<(std::ostream& os, const step_match_arguments_list& msg)
 {
@@ -26,10 +47,6 @@ operator<<(std::ostream& os, const step_match_arguments_list& msg)
 }
 
 void to_json(json& j, const step_match_arguments_list& m)
-{
-    j = json{
-        { "step_match_arguments", m.step_match_arguments }
-    };
-}
+{ m.to_json(j); }
 
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/table_cell.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/table_cell.cpp
index c43b6cd7..2fc1c3bd 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/table_cell.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/table_cell.cpp
@@ -18,6 +18,28 @@ table_cell::to_string() const
     return oss.str();
 }
 
+void
+table_cell::to_json(json& j) const
+{
+    j = json{
+        { "location", location },
+        { "value", value }
+    };
+}
+
+std::string
+table_cell::to_json() const
+{
+    std::ostringstream oss;
+    json j;
+
+    to_json(j);
+
+    oss << j;
+
+    return oss.str();
+}
+
 std::ostream&
 operator<<(std::ostream& os, const table_cell& msg)
 {
@@ -27,11 +49,6 @@ operator<<(std::ostream& os, const table_cell& msg)
 }
 
 void to_json(json& j, const table_cell& m)
-{
-    j = json{
-        { "location", m.location },
-        { "value", m.value }
-    };
-}
+{ m.to_json(j); }
 
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/table_row.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/table_row.cpp
index 235b6cf1..40f2c910 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/table_row.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/table_row.cpp
@@ -19,6 +19,29 @@ table_row::to_string() const
     return oss.str();
 }
 
+void
+table_row::to_json(json& j) const
+{
+    j = json{
+        { "location", location },
+        { "cells", cells },
+        { "id", id }
+    };
+}
+
+std::string
+table_row::to_json() const
+{
+    std::ostringstream oss;
+    json j;
+
+    to_json(j);
+
+    oss << j;
+
+    return oss.str();
+}
+
 std::ostream&
 operator<<(std::ostream& os, const table_row& msg)
 {
@@ -28,12 +51,6 @@ operator<<(std::ostream& os, const table_row& msg)
 }
 
 void to_json(json& j, const table_row& m)
-{
-    j = json{
-        { "location", m.location },
-        { "cells", m.cells },
-        { "id", m.id }
-    };
-}
+{ m.to_json(j); }
 
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/tag.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/tag.cpp
index cec28510..25d05ec5 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/tag.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/tag.cpp
@@ -19,6 +19,29 @@ tag::to_string() const
     return oss.str();
 }
 
+void
+tag::to_json(json& j) const
+{
+    j = json{
+        { "location", location },
+        { "name", name },
+        { "id", id }
+    };
+}
+
+std::string
+tag::to_json() const
+{
+    std::ostringstream oss;
+    json j;
+
+    to_json(j);
+
+    oss << j;
+
+    return oss.str();
+}
+
 std::ostream&
 operator<<(std::ostream& os, const tag& msg)
 {
@@ -28,12 +51,6 @@ operator<<(std::ostream& os, const tag& msg)
 }
 
 void to_json(json& j, const tag& m)
-{
-    j = json{
-        { "location", m.location },
-        { "name", m.name },
-        { "id", m.id }
-    };
-}
+{ m.to_json(j); }
 
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/test_case.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/test_case.cpp
index b1c5d9f2..d47bde44 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/test_case.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/test_case.cpp
@@ -19,6 +19,29 @@ test_case::to_string() const
     return oss.str();
 }
 
+void
+test_case::to_json(json& j) const
+{
+    j = json{
+        { "id", id },
+        { "pickle_id", pickle_id },
+        { "test_steps", test_steps }
+    };
+}
+
+std::string
+test_case::to_json() const
+{
+    std::ostringstream oss;
+    json j;
+
+    to_json(j);
+
+    oss << j;
+
+    return oss.str();
+}
+
 std::ostream&
 operator<<(std::ostream& os, const test_case& msg)
 {
@@ -28,12 +51,6 @@ operator<<(std::ostream& os, const test_case& msg)
 }
 
 void to_json(json& j, const test_case& m)
-{
-    j = json{
-        { "id", m.id },
-        { "pickle_id", m.pickle_id },
-        { "test_steps", m.test_steps }
-    };
-}
+{ m.to_json(j); }
 
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/test_case_finished.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/test_case_finished.cpp
index 6c4fa254..96bac3fc 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/test_case_finished.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/test_case_finished.cpp
@@ -19,6 +19,29 @@ test_case_finished::to_string() const
     return oss.str();
 }
 
+void
+test_case_finished::to_json(json& j) const
+{
+    j = json{
+        { "test_case_started_id", test_case_started_id },
+        { "timestamp", timestamp },
+        { "will_be_retried", will_be_retried }
+    };
+}
+
+std::string
+test_case_finished::to_json() const
+{
+    std::ostringstream oss;
+    json j;
+
+    to_json(j);
+
+    oss << j;
+
+    return oss.str();
+}
+
 std::ostream&
 operator<<(std::ostream& os, const test_case_finished& msg)
 {
@@ -28,12 +51,6 @@ operator<<(std::ostream& os, const test_case_finished& msg)
 }
 
 void to_json(json& j, const test_case_finished& m)
-{
-    j = json{
-        { "test_case_started_id", m.test_case_started_id },
-        { "timestamp", m.timestamp },
-        { "will_be_retried", m.will_be_retried }
-    };
-}
+{ m.to_json(j); }
 
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/test_case_started.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/test_case_started.cpp
index 58e2a532..6f847d27 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/test_case_started.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/test_case_started.cpp
@@ -21,6 +21,31 @@ test_case_started::to_string() const
     return oss.str();
 }
 
+void
+test_case_started::to_json(json& j) const
+{
+    j = json{
+        { "attempt", attempt },
+        { "id", id },
+        { "test_case_id", test_case_id },
+        { "worker_id", worker_id },
+        { "timestamp", timestamp }
+    };
+}
+
+std::string
+test_case_started::to_json() const
+{
+    std::ostringstream oss;
+    json j;
+
+    to_json(j);
+
+    oss << j;
+
+    return oss.str();
+}
+
 std::ostream&
 operator<<(std::ostream& os, const test_case_started& msg)
 {
@@ -30,14 +55,6 @@ operator<<(std::ostream& os, const test_case_started& msg)
 }
 
 void to_json(json& j, const test_case_started& m)
-{
-    j = json{
-        { "attempt", m.attempt },
-        { "id", m.id },
-        { "test_case_id", m.test_case_id },
-        { "worker_id", m.worker_id },
-        { "timestamp", m.timestamp }
-    };
-}
+{ m.to_json(j); }
 
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/test_run_finished.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/test_run_finished.cpp
index 04808516..099184f3 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/test_run_finished.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/test_run_finished.cpp
@@ -20,6 +20,30 @@ test_run_finished::to_string() const
     return oss.str();
 }
 
+void
+test_run_finished::to_json(json& j) const
+{
+    j = json{
+        { "message", message },
+        { "success", success },
+        { "timestamp", timestamp },
+        { "exception", exception }
+    };
+}
+
+std::string
+test_run_finished::to_json() const
+{
+    std::ostringstream oss;
+    json j;
+
+    to_json(j);
+
+    oss << j;
+
+    return oss.str();
+}
+
 std::ostream&
 operator<<(std::ostream& os, const test_run_finished& msg)
 {
@@ -29,13 +53,6 @@ operator<<(std::ostream& os, const test_run_finished& msg)
 }
 
 void to_json(json& j, const test_run_finished& m)
-{
-    j = json{
-        { "message", m.message },
-        { "success", m.success },
-        { "timestamp", m.timestamp },
-        { "exception", m.exception }
-    };
-}
+{ m.to_json(j); }
 
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/test_run_started.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/test_run_started.cpp
index ecca4bec..e0759b5b 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/test_run_started.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/test_run_started.cpp
@@ -17,6 +17,27 @@ test_run_started::to_string() const
     return oss.str();
 }
 
+void
+test_run_started::to_json(json& j) const
+{
+    j = json{
+        { "timestamp", timestamp }
+    };
+}
+
+std::string
+test_run_started::to_json() const
+{
+    std::ostringstream oss;
+    json j;
+
+    to_json(j);
+
+    oss << j;
+
+    return oss.str();
+}
+
 std::ostream&
 operator<<(std::ostream& os, const test_run_started& msg)
 {
@@ -26,10 +47,6 @@ operator<<(std::ostream& os, const test_run_started& msg)
 }
 
 void to_json(json& j, const test_run_started& m)
-{
-    j = json{
-        { "timestamp", m.timestamp }
-    };
-}
+{ m.to_json(j); }
 
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/test_step.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/test_step.cpp
index 1e6b29ec..7771ca84 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/test_step.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/test_step.cpp
@@ -21,6 +21,31 @@ test_step::to_string() const
     return oss.str();
 }
 
+void
+test_step::to_json(json& j) const
+{
+    j = json{
+        { "hook_id", hook_id },
+        { "id", id },
+        { "pickle_step_id", pickle_step_id },
+        { "step_definition_ids", step_definition_ids },
+        { "step_match_arguments_lists", step_match_arguments_lists }
+    };
+}
+
+std::string
+test_step::to_json() const
+{
+    std::ostringstream oss;
+    json j;
+
+    to_json(j);
+
+    oss << j;
+
+    return oss.str();
+}
+
 std::ostream&
 operator<<(std::ostream& os, const test_step& msg)
 {
@@ -30,14 +55,6 @@ operator<<(std::ostream& os, const test_step& msg)
 }
 
 void to_json(json& j, const test_step& m)
-{
-    j = json{
-        { "hook_id", m.hook_id },
-        { "id", m.id },
-        { "pickle_step_id", m.pickle_step_id },
-        { "step_definition_ids", m.step_definition_ids },
-        { "step_match_arguments_lists", m.step_match_arguments_lists }
-    };
-}
+{ m.to_json(j); }
 
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/test_step_finished.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/test_step_finished.cpp
index 82fcea82..e4fcf793 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/test_step_finished.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/test_step_finished.cpp
@@ -20,6 +20,30 @@ test_step_finished::to_string() const
     return oss.str();
 }
 
+void
+test_step_finished::to_json(json& j) const
+{
+    j = json{
+        { "test_case_started_id", test_case_started_id },
+        { "test_step_id", test_step_id },
+        { "test_step_result", test_step_result },
+        { "timestamp", timestamp }
+    };
+}
+
+std::string
+test_step_finished::to_json() const
+{
+    std::ostringstream oss;
+    json j;
+
+    to_json(j);
+
+    oss << j;
+
+    return oss.str();
+}
+
 std::ostream&
 operator<<(std::ostream& os, const test_step_finished& msg)
 {
@@ -29,13 +53,6 @@ operator<<(std::ostream& os, const test_step_finished& msg)
 }
 
 void to_json(json& j, const test_step_finished& m)
-{
-    j = json{
-        { "test_case_started_id", m.test_case_started_id },
-        { "test_step_id", m.test_step_id },
-        { "test_step_result", m.test_step_result },
-        { "timestamp", m.timestamp }
-    };
-}
+{ m.to_json(j); }
 
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/test_step_result.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/test_step_result.cpp
index 4fc7f7a9..11c4b57a 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/test_step_result.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/test_step_result.cpp
@@ -20,6 +20,30 @@ test_step_result::to_string() const
     return oss.str();
 }
 
+void
+test_step_result::to_json(json& j) const
+{
+    j = json{
+        { "duration", duration },
+        { "message", message },
+        { "status", status },
+        { "exception", exception }
+    };
+}
+
+std::string
+test_step_result::to_json() const
+{
+    std::ostringstream oss;
+    json j;
+
+    to_json(j);
+
+    oss << j;
+
+    return oss.str();
+}
+
 std::ostream&
 operator<<(std::ostream& os, const test_step_result& msg)
 {
@@ -29,13 +53,6 @@ operator<<(std::ostream& os, const test_step_result& msg)
 }
 
 void to_json(json& j, const test_step_result& m)
-{
-    j = json{
-        { "duration", m.duration },
-        { "message", m.message },
-        { "status", m.status },
-        { "exception", m.exception }
-    };
-}
+{ m.to_json(j); }
 
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/test_step_started.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/test_step_started.cpp
index a801c9d0..a7da4c76 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/test_step_started.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/test_step_started.cpp
@@ -19,6 +19,29 @@ test_step_started::to_string() const
     return oss.str();
 }
 
+void
+test_step_started::to_json(json& j) const
+{
+    j = json{
+        { "test_case_started_id", test_case_started_id },
+        { "test_step_id", test_step_id },
+        { "timestamp", timestamp }
+    };
+}
+
+std::string
+test_step_started::to_json() const
+{
+    std::ostringstream oss;
+    json j;
+
+    to_json(j);
+
+    oss << j;
+
+    return oss.str();
+}
+
 std::ostream&
 operator<<(std::ostream& os, const test_step_started& msg)
 {
@@ -28,12 +51,6 @@ operator<<(std::ostream& os, const test_step_started& msg)
 }
 
 void to_json(json& j, const test_step_started& m)
-{
-    j = json{
-        { "test_case_started_id", m.test_case_started_id },
-        { "test_step_id", m.test_step_id },
-        { "timestamp", m.timestamp }
-    };
-}
+{ m.to_json(j); }
 
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/timestamp.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/timestamp.cpp
index 8e6d4bee..53342250 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/timestamp.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/timestamp.cpp
@@ -18,6 +18,28 @@ timestamp::to_string() const
     return oss.str();
 }
 
+void
+timestamp::to_json(json& j) const
+{
+    j = json{
+        { "seconds", seconds },
+        { "nanos", nanos }
+    };
+}
+
+std::string
+timestamp::to_json() const
+{
+    std::ostringstream oss;
+    json j;
+
+    to_json(j);
+
+    oss << j;
+
+    return oss.str();
+}
+
 std::ostream&
 operator<<(std::ostream& os, const timestamp& msg)
 {
@@ -27,11 +49,6 @@ operator<<(std::ostream& os, const timestamp& msg)
 }
 
 void to_json(json& j, const timestamp& m)
-{
-    j = json{
-        { "seconds", m.seconds },
-        { "nanos", m.nanos }
-    };
-}
+{ m.to_json(j); }
 
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/undefined_parameter_type.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/undefined_parameter_type.cpp
index 6ef96834..e017e3ca 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/undefined_parameter_type.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/undefined_parameter_type.cpp
@@ -18,6 +18,28 @@ undefined_parameter_type::to_string() const
     return oss.str();
 }
 
+void
+undefined_parameter_type::to_json(json& j) const
+{
+    j = json{
+        { "expression", expression },
+        { "name", name }
+    };
+}
+
+std::string
+undefined_parameter_type::to_json() const
+{
+    std::ostringstream oss;
+    json j;
+
+    to_json(j);
+
+    oss << j;
+
+    return oss.str();
+}
+
 std::ostream&
 operator<<(std::ostream& os, const undefined_parameter_type& msg)
 {
@@ -27,11 +49,6 @@ operator<<(std::ostream& os, const undefined_parameter_type& msg)
 }
 
 void to_json(json& j, const undefined_parameter_type& m)
-{
-    j = json{
-        { "expression", m.expression },
-        { "name", m.name }
-    };
-}
+{ m.to_json(j); }
 
 }
diff --git a/jsonschema/scripts/templates/cpp.hpp.erb b/jsonschema/scripts/templates/cpp.hpp.erb
index 08d680e1..b3fb2d6a 100644
--- a/jsonschema/scripts/templates/cpp.hpp.erb
+++ b/jsonschema/scripts/templates/cpp.hpp.erb
@@ -29,6 +29,8 @@
 
 namespace cucumber::messages {
 
+using json = nlohmann::json;
+
 //
 // Represents the <%= class_name(key) %> message in Cucumber's message protocol
 // @see <a href=https://github.com/cucumber/messages>Github - Cucumber - Messages</a>
@@ -57,13 +59,14 @@ struct <%= myclass %>
   <%- end -%>
 
     std::string to_string() const;
+
+    void to_json(json& j) const;
+    std::string to_json() const;
 };
 
 std::ostream&
 operator<<(std::ostream& os, const <%= myclass %>& msg);
 
-using json = nlohmann::json;
-
 void to_json(json& j, const <%= myclass %>& m);
 
 }
@@ -90,25 +93,18 @@ std::string
     return oss.str();
 }
 
-std::ostream&
-operator<<(std::ostream& os, const <%= myclass %>& msg)
-{
-    os << msg.to_string();
-
-    return os;
-}
-
-void to_json(json& j, const <%= myclass %>& m)
+void
+<%= myclass %>::to_json(json& j) const
 {
     <%-
     exprs = []
     schema['properties'].each_with_index do |(property_name, property), index|
         type = underscore(type_for(class_name(key), property_name, property))
-        toto = "{ "
-        toto += '"' + underscore(property_name) + '"'
-        toto += ", m." + underscore(property_name)
-        toto += " }"
-        exprs.append(toto)
+        expr = "{ "
+        expr += '"' + underscore(property_name) + '"'
+        expr += ", " + underscore(property_name)
+        expr += " }"
+        exprs.append(expr)
     end
     -%>
     j = json{
@@ -116,4 +112,28 @@ void to_json(json& j, const <%= myclass %>& m)
     };
 }
 
+std::string
+<%= myclass %>::to_json() const
+{
+    std::ostringstream oss;
+    json j;
+
+    to_json(j);
+
+    oss << j;
+
+    return oss.str();
+}
+
+std::ostream&
+operator<<(std::ostream& os, const <%= myclass %>& msg)
+{
+    os << msg.to_string();
+
+    return os;
+}
+
+void to_json(json& j, const <%= myclass %>& m)
+{ m.to_json(j); }
+
 }<%- end -%>

From 47319447bc3461f7031ce8e6229b9eaf025ca336 Mon Sep 17 00:00:00 2001
From: Remy Chibois <remy@chybz.net>
Date: Wed, 10 May 2023 18:44:05 +0200
Subject: [PATCH 12/26] chore: json serialization

---
 .../cucumber/messages/attachment.cpp          | 18 +++++-----
 .../cucumber/messages/background.cpp          | 14 ++++----
 .../cucumber/messages/ci.cpp                  | 10 +++---
 .../cucumber/messages/comment.cpp             |  6 ++--
 .../cucumber/messages/data_table.cpp          |  6 ++--
 .../cucumber/messages/doc_string.cpp          | 10 +++---
 .../cucumber/messages/duration.cpp            |  6 ++--
 .../cucumber/messages/envelope.cpp            | 36 +++++++++----------
 .../cucumber/messages/examples.cpp            | 18 +++++-----
 .../cucumber/messages/exception.cpp           |  6 ++--
 .../cucumber/messages/feature.cpp             | 16 ++++-----
 .../cucumber/messages/feature_child.cpp       |  8 ++---
 .../cucumber/messages/gherkin_document.cpp    |  8 ++---
 .../cucumber/messages/git.cpp                 | 10 +++---
 .../cucumber/messages/group.cpp               |  8 ++---
 .../cucumber/messages/hook.cpp                | 10 +++---
 .../cucumber/messages/java_method.cpp         |  8 ++---
 .../messages/java_stack_trace_element.cpp     |  8 ++---
 .../cucumber/messages/location.cpp            |  6 ++--
 .../cucumber/messages/meta.cpp                | 14 ++++----
 .../cucumber/messages/parameter_type.cpp      | 14 ++++----
 .../cucumber/messages/parse_error.cpp         |  6 ++--
 .../cucumber/messages/pickle.cpp              | 16 ++++-----
 .../cucumber/messages/pickle_doc_string.cpp   |  6 ++--
 .../cucumber/messages/pickle_step.cpp         | 12 +++----
 .../messages/pickle_step_argument.cpp         |  6 ++--
 .../cucumber/messages/pickle_table.cpp        |  4 +--
 .../cucumber/messages/pickle_table_cell.cpp   |  4 +--
 .../cucumber/messages/pickle_table_row.cpp    |  4 +--
 .../cucumber/messages/pickle_tag.cpp          |  6 ++--
 .../cucumber/messages/product.cpp             |  6 ++--
 .../cucumber/messages/rule.cpp                | 16 ++++-----
 .../cucumber/messages/rule_child.cpp          |  6 ++--
 .../cucumber/messages/scenario.cpp            | 18 +++++-----
 .../cucumber/messages/source.cpp              |  8 ++---
 .../cucumber/messages/source_reference.cpp    | 10 +++---
 .../cucumber/messages/step.cpp                | 16 ++++-----
 .../cucumber/messages/step_definition.cpp     |  8 ++---
 .../messages/step_definition_pattern.cpp      |  6 ++--
 .../cucumber/messages/step_match_argument.cpp |  6 ++--
 .../messages/step_match_arguments_list.cpp    |  4 +--
 .../cucumber/messages/table_cell.cpp          |  6 ++--
 .../cucumber/messages/table_row.cpp           |  8 ++---
 .../cucumber/messages/tag.cpp                 |  8 ++---
 .../cucumber/messages/test_case.cpp           |  8 ++---
 .../cucumber/messages/test_case_finished.cpp  |  8 ++---
 .../cucumber/messages/test_case_started.cpp   | 12 +++----
 .../cucumber/messages/test_run_finished.cpp   | 10 +++---
 .../cucumber/messages/test_run_started.cpp    |  4 +--
 .../cucumber/messages/test_step.cpp           | 12 +++----
 .../cucumber/messages/test_step_finished.cpp  | 10 +++---
 .../cucumber/messages/test_step_result.cpp    | 10 +++---
 .../cucumber/messages/test_step_started.cpp   |  8 ++---
 .../cucumber/messages/timestamp.cpp           |  6 ++--
 .../messages/undefined_parameter_type.cpp     |  6 ++--
 .../cucumber/messages/utils.hpp               |  3 ++
 jsonschema/scripts/templates/cpp.hpp.erb      |  4 +--
 57 files changed, 267 insertions(+), 264 deletions(-)

diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/attachment.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/attachment.cpp
index 1d349ee4..2db15cfb 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/attachment.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/attachment.cpp
@@ -27,15 +27,15 @@ attachment::to_string() const
 void
 attachment::to_json(json& j) const
 {
-    j = json{
-        { "body", body },
-        { "content_encoding", content_encoding },
-        { "file_name", file_name },
-        { "media_type", media_type },
-        { "source", source },
-        { "test_case_started_id", test_case_started_id },
-        { "test_step_id", test_step_id },
-        { "url", url }
+    j[camelize("attachment")] = json{
+        { camelize("body"), body },
+        { camelize("content_encoding"), content_encoding },
+        { camelize("file_name"), file_name },
+        { camelize("media_type"), media_type },
+        { camelize("source"), source },
+        { camelize("test_case_started_id"), test_case_started_id },
+        { camelize("test_step_id"), test_step_id },
+        { camelize("url"), url }
     };
 }
 
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/background.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/background.cpp
index 17acfe28..7aab60e9 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/background.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/background.cpp
@@ -25,13 +25,13 @@ background::to_string() const
 void
 background::to_json(json& j) const
 {
-    j = json{
-        { "location", location },
-        { "keyword", keyword },
-        { "name", name },
-        { "description", description },
-        { "steps", steps },
-        { "id", id }
+    j[camelize("background")] = json{
+        { camelize("location"), location },
+        { camelize("keyword"), keyword },
+        { camelize("name"), name },
+        { camelize("description"), description },
+        { camelize("steps"), steps },
+        { camelize("id"), id }
     };
 }
 
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/ci.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/ci.cpp
index 8da5de3e..5da2f504 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/ci.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/ci.cpp
@@ -23,11 +23,11 @@ ci::to_string() const
 void
 ci::to_json(json& j) const
 {
-    j = json{
-        { "name", name },
-        { "url", url },
-        { "build_number", build_number },
-        { "git", git }
+    j[camelize("ci")] = json{
+        { camelize("name"), name },
+        { camelize("url"), url },
+        { camelize("build_number"), build_number },
+        { camelize("git"), git }
     };
 }
 
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/comment.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/comment.cpp
index 4cf4b152..94f8ddbf 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/comment.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/comment.cpp
@@ -21,9 +21,9 @@ comment::to_string() const
 void
 comment::to_json(json& j) const
 {
-    j = json{
-        { "location", location },
-        { "text", text }
+    j[camelize("comment")] = json{
+        { camelize("location"), location },
+        { camelize("text"), text }
     };
 }
 
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/data_table.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/data_table.cpp
index 98ef6348..7fff82fb 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/data_table.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/data_table.cpp
@@ -21,9 +21,9 @@ data_table::to_string() const
 void
 data_table::to_json(json& j) const
 {
-    j = json{
-        { "location", location },
-        { "rows", rows }
+    j[camelize("data_table")] = json{
+        { camelize("location"), location },
+        { camelize("rows"), rows }
     };
 }
 
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/doc_string.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/doc_string.cpp
index dd3a9653..d1bcd8c3 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/doc_string.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/doc_string.cpp
@@ -23,11 +23,11 @@ doc_string::to_string() const
 void
 doc_string::to_json(json& j) const
 {
-    j = json{
-        { "location", location },
-        { "media_type", media_type },
-        { "content", content },
-        { "delimiter", delimiter }
+    j[camelize("doc_string")] = json{
+        { camelize("location"), location },
+        { camelize("media_type"), media_type },
+        { camelize("content"), content },
+        { camelize("delimiter"), delimiter }
     };
 }
 
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/duration.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/duration.cpp
index e00580e8..ff39d9ef 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/duration.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/duration.cpp
@@ -21,9 +21,9 @@ duration::to_string() const
 void
 duration::to_json(json& j) const
 {
-    j = json{
-        { "seconds", seconds },
-        { "nanos", nanos }
+    j[camelize("duration")] = json{
+        { camelize("seconds"), seconds },
+        { camelize("nanos"), nanos }
     };
 }
 
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/envelope.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/envelope.cpp
index fe667118..ef05cb7e 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/envelope.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/envelope.cpp
@@ -36,24 +36,24 @@ envelope::to_string() const
 void
 envelope::to_json(json& j) const
 {
-    j = json{
-        { "attachment", attachment },
-        { "gherkin_document", gherkin_document },
-        { "hook", hook },
-        { "meta", meta },
-        { "parameter_type", parameter_type },
-        { "parse_error", parse_error },
-        { "pickle", pickle },
-        { "source", source },
-        { "step_definition", step_definition },
-        { "test_case", test_case },
-        { "test_case_finished", test_case_finished },
-        { "test_case_started", test_case_started },
-        { "test_run_finished", test_run_finished },
-        { "test_run_started", test_run_started },
-        { "test_step_finished", test_step_finished },
-        { "test_step_started", test_step_started },
-        { "undefined_parameter_type", undefined_parameter_type }
+    j[camelize("envelope")] = json{
+        { camelize("attachment"), attachment },
+        { camelize("gherkin_document"), gherkin_document },
+        { camelize("hook"), hook },
+        { camelize("meta"), meta },
+        { camelize("parameter_type"), parameter_type },
+        { camelize("parse_error"), parse_error },
+        { camelize("pickle"), pickle },
+        { camelize("source"), source },
+        { camelize("step_definition"), step_definition },
+        { camelize("test_case"), test_case },
+        { camelize("test_case_finished"), test_case_finished },
+        { camelize("test_case_started"), test_case_started },
+        { camelize("test_run_finished"), test_run_finished },
+        { camelize("test_run_started"), test_run_started },
+        { camelize("test_step_finished"), test_step_finished },
+        { camelize("test_step_started"), test_step_started },
+        { camelize("undefined_parameter_type"), undefined_parameter_type }
     };
 }
 
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/examples.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/examples.cpp
index 52dc2438..b8d38b70 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/examples.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/examples.cpp
@@ -27,15 +27,15 @@ examples::to_string() const
 void
 examples::to_json(json& j) const
 {
-    j = json{
-        { "location", location },
-        { "tags", tags },
-        { "keyword", keyword },
-        { "name", name },
-        { "description", description },
-        { "table_header", table_header },
-        { "table_body", table_body },
-        { "id", id }
+    j[camelize("examples")] = json{
+        { camelize("location"), location },
+        { camelize("tags"), tags },
+        { camelize("keyword"), keyword },
+        { camelize("name"), name },
+        { camelize("description"), description },
+        { camelize("table_header"), table_header },
+        { camelize("table_body"), table_body },
+        { camelize("id"), id }
     };
 }
 
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/exception.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/exception.cpp
index cf7ebcd0..e5be6965 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/exception.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/exception.cpp
@@ -21,9 +21,9 @@ exception::to_string() const
 void
 exception::to_json(json& j) const
 {
-    j = json{
-        { "type", type },
-        { "message", message }
+    j[camelize("exception")] = json{
+        { camelize("type"), type },
+        { camelize("message"), message }
     };
 }
 
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/feature.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/feature.cpp
index 58d852a0..70871fb8 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/feature.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/feature.cpp
@@ -26,14 +26,14 @@ feature::to_string() const
 void
 feature::to_json(json& j) const
 {
-    j = json{
-        { "location", location },
-        { "tags", tags },
-        { "language", language },
-        { "keyword", keyword },
-        { "name", name },
-        { "description", description },
-        { "children", children }
+    j[camelize("feature")] = json{
+        { camelize("location"), location },
+        { camelize("tags"), tags },
+        { camelize("language"), language },
+        { camelize("keyword"), keyword },
+        { camelize("name"), name },
+        { camelize("description"), description },
+        { camelize("children"), children }
     };
 }
 
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/feature_child.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/feature_child.cpp
index 8b4d4388..d837b0fa 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/feature_child.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/feature_child.cpp
@@ -22,10 +22,10 @@ feature_child::to_string() const
 void
 feature_child::to_json(json& j) const
 {
-    j = json{
-        { "rule", rule },
-        { "background", background },
-        { "scenario", scenario }
+    j[camelize("feature_child")] = json{
+        { camelize("rule"), rule },
+        { camelize("background"), background },
+        { camelize("scenario"), scenario }
     };
 }
 
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/gherkin_document.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/gherkin_document.cpp
index 3f810d55..8b902966 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/gherkin_document.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/gherkin_document.cpp
@@ -22,10 +22,10 @@ gherkin_document::to_string() const
 void
 gherkin_document::to_json(json& j) const
 {
-    j = json{
-        { "uri", uri },
-        { "feature", feature },
-        { "comments", comments }
+    j[camelize("gherkin_document")] = json{
+        { camelize("uri"), uri },
+        { camelize("feature"), feature },
+        { camelize("comments"), comments }
     };
 }
 
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/git.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/git.cpp
index 6a14e544..a265e843 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/git.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/git.cpp
@@ -23,11 +23,11 @@ git::to_string() const
 void
 git::to_json(json& j) const
 {
-    j = json{
-        { "remote", remote },
-        { "revision", revision },
-        { "branch", branch },
-        { "tag", tag }
+    j[camelize("git")] = json{
+        { camelize("remote"), remote },
+        { camelize("revision"), revision },
+        { camelize("branch"), branch },
+        { camelize("tag"), tag }
     };
 }
 
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/group.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/group.cpp
index af14d867..2ecab69d 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/group.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/group.cpp
@@ -22,10 +22,10 @@ group::to_string() const
 void
 group::to_json(json& j) const
 {
-    j = json{
-        { "children", children },
-        { "start", start },
-        { "value", value }
+    j[camelize("group")] = json{
+        { camelize("children"), children },
+        { camelize("start"), start },
+        { camelize("value"), value }
     };
 }
 
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/hook.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/hook.cpp
index 1625bf94..bfc73102 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/hook.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/hook.cpp
@@ -23,11 +23,11 @@ hook::to_string() const
 void
 hook::to_json(json& j) const
 {
-    j = json{
-        { "id", id },
-        { "name", name },
-        { "source_reference", source_reference },
-        { "tag_expression", tag_expression }
+    j[camelize("hook")] = json{
+        { camelize("id"), id },
+        { camelize("name"), name },
+        { camelize("source_reference"), source_reference },
+        { camelize("tag_expression"), tag_expression }
     };
 }
 
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/java_method.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/java_method.cpp
index 4c997521..ce051b0b 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/java_method.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/java_method.cpp
@@ -22,10 +22,10 @@ java_method::to_string() const
 void
 java_method::to_json(json& j) const
 {
-    j = json{
-        { "class_name", class_name },
-        { "method_name", method_name },
-        { "method_parameter_types", method_parameter_types }
+    j[camelize("java_method")] = json{
+        { camelize("class_name"), class_name },
+        { camelize("method_name"), method_name },
+        { camelize("method_parameter_types"), method_parameter_types }
     };
 }
 
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/java_stack_trace_element.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/java_stack_trace_element.cpp
index 0731a4f3..88b9940b 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/java_stack_trace_element.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/java_stack_trace_element.cpp
@@ -22,10 +22,10 @@ java_stack_trace_element::to_string() const
 void
 java_stack_trace_element::to_json(json& j) const
 {
-    j = json{
-        { "class_name", class_name },
-        { "file_name", file_name },
-        { "method_name", method_name }
+    j[camelize("java_stack_trace_element")] = json{
+        { camelize("class_name"), class_name },
+        { camelize("file_name"), file_name },
+        { camelize("method_name"), method_name }
     };
 }
 
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/location.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/location.cpp
index 805b0e30..1b652293 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/location.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/location.cpp
@@ -21,9 +21,9 @@ location::to_string() const
 void
 location::to_json(json& j) const
 {
-    j = json{
-        { "line", line },
-        { "column", column }
+    j[camelize("location")] = json{
+        { camelize("line"), line },
+        { camelize("column"), column }
     };
 }
 
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/meta.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/meta.cpp
index 04dee7e0..d7c099dc 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/meta.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/meta.cpp
@@ -25,13 +25,13 @@ meta::to_string() const
 void
 meta::to_json(json& j) const
 {
-    j = json{
-        { "protocol_version", protocol_version },
-        { "implementation", implementation },
-        { "runtime", runtime },
-        { "os", os },
-        { "cpu", cpu },
-        { "ci", ci }
+    j[camelize("meta")] = json{
+        { camelize("protocol_version"), protocol_version },
+        { camelize("implementation"), implementation },
+        { camelize("runtime"), runtime },
+        { camelize("os"), os },
+        { camelize("cpu"), cpu },
+        { camelize("ci"), ci }
     };
 }
 
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/parameter_type.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/parameter_type.cpp
index aa6db871..6dd73065 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/parameter_type.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/parameter_type.cpp
@@ -25,13 +25,13 @@ parameter_type::to_string() const
 void
 parameter_type::to_json(json& j) const
 {
-    j = json{
-        { "name", name },
-        { "regular_expressions", regular_expressions },
-        { "prefer_for_regular_expression_match", prefer_for_regular_expression_match },
-        { "use_for_snippets", use_for_snippets },
-        { "id", id },
-        { "source_reference", source_reference }
+    j[camelize("parameter_type")] = json{
+        { camelize("name"), name },
+        { camelize("regular_expressions"), regular_expressions },
+        { camelize("prefer_for_regular_expression_match"), prefer_for_regular_expression_match },
+        { camelize("use_for_snippets"), use_for_snippets },
+        { camelize("id"), id },
+        { camelize("source_reference"), source_reference }
     };
 }
 
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/parse_error.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/parse_error.cpp
index 0d44c64f..9d2bd60a 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/parse_error.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/parse_error.cpp
@@ -21,9 +21,9 @@ parse_error::to_string() const
 void
 parse_error::to_json(json& j) const
 {
-    j = json{
-        { "source", source },
-        { "message", message }
+    j[camelize("parse_error")] = json{
+        { camelize("source"), source },
+        { camelize("message"), message }
     };
 }
 
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/pickle.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/pickle.cpp
index 2347ff2c..6277bcf3 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/pickle.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/pickle.cpp
@@ -26,14 +26,14 @@ pickle::to_string() const
 void
 pickle::to_json(json& j) const
 {
-    j = json{
-        { "id", id },
-        { "uri", uri },
-        { "name", name },
-        { "language", language },
-        { "steps", steps },
-        { "tags", tags },
-        { "ast_node_ids", ast_node_ids }
+    j[camelize("pickle")] = json{
+        { camelize("id"), id },
+        { camelize("uri"), uri },
+        { camelize("name"), name },
+        { camelize("language"), language },
+        { camelize("steps"), steps },
+        { camelize("tags"), tags },
+        { camelize("ast_node_ids"), ast_node_ids }
     };
 }
 
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_doc_string.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_doc_string.cpp
index ddababf2..600ecb19 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_doc_string.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_doc_string.cpp
@@ -21,9 +21,9 @@ pickle_doc_string::to_string() const
 void
 pickle_doc_string::to_json(json& j) const
 {
-    j = json{
-        { "media_type", media_type },
-        { "content", content }
+    j[camelize("pickle_doc_string")] = json{
+        { camelize("media_type"), media_type },
+        { camelize("content"), content }
     };
 }
 
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_step.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_step.cpp
index a56db7b3..6fa58069 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_step.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_step.cpp
@@ -24,12 +24,12 @@ pickle_step::to_string() const
 void
 pickle_step::to_json(json& j) const
 {
-    j = json{
-        { "argument", argument },
-        { "ast_node_ids", ast_node_ids },
-        { "id", id },
-        { "type", type },
-        { "text", text }
+    j[camelize("pickle_step")] = json{
+        { camelize("argument"), argument },
+        { camelize("ast_node_ids"), ast_node_ids },
+        { camelize("id"), id },
+        { camelize("type"), type },
+        { camelize("text"), text }
     };
 }
 
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_step_argument.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_step_argument.cpp
index a9247071..0a6a841d 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_step_argument.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_step_argument.cpp
@@ -21,9 +21,9 @@ pickle_step_argument::to_string() const
 void
 pickle_step_argument::to_json(json& j) const
 {
-    j = json{
-        { "doc_string", doc_string },
-        { "data_table", data_table }
+    j[camelize("pickle_step_argument")] = json{
+        { camelize("doc_string"), doc_string },
+        { camelize("data_table"), data_table }
     };
 }
 
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_table.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_table.cpp
index 9c9e6cec..1cfd56a8 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_table.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_table.cpp
@@ -20,8 +20,8 @@ pickle_table::to_string() const
 void
 pickle_table::to_json(json& j) const
 {
-    j = json{
-        { "rows", rows }
+    j[camelize("pickle_table")] = json{
+        { camelize("rows"), rows }
     };
 }
 
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_table_cell.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_table_cell.cpp
index 6e063781..01f12fa6 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_table_cell.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_table_cell.cpp
@@ -20,8 +20,8 @@ pickle_table_cell::to_string() const
 void
 pickle_table_cell::to_json(json& j) const
 {
-    j = json{
-        { "value", value }
+    j[camelize("pickle_table_cell")] = json{
+        { camelize("value"), value }
     };
 }
 
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_table_row.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_table_row.cpp
index 505f140b..6d867614 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_table_row.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_table_row.cpp
@@ -20,8 +20,8 @@ pickle_table_row::to_string() const
 void
 pickle_table_row::to_json(json& j) const
 {
-    j = json{
-        { "cells", cells }
+    j[camelize("pickle_table_row")] = json{
+        { camelize("cells"), cells }
     };
 }
 
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_tag.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_tag.cpp
index 2923a9b4..4b6ebabf 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_tag.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_tag.cpp
@@ -21,9 +21,9 @@ pickle_tag::to_string() const
 void
 pickle_tag::to_json(json& j) const
 {
-    j = json{
-        { "name", name },
-        { "ast_node_id", ast_node_id }
+    j[camelize("pickle_tag")] = json{
+        { camelize("name"), name },
+        { camelize("ast_node_id"), ast_node_id }
     };
 }
 
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/product.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/product.cpp
index c47a52bc..240a8d64 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/product.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/product.cpp
@@ -21,9 +21,9 @@ product::to_string() const
 void
 product::to_json(json& j) const
 {
-    j = json{
-        { "name", name },
-        { "version", version }
+    j[camelize("product")] = json{
+        { camelize("name"), name },
+        { camelize("version"), version }
     };
 }
 
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/rule.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/rule.cpp
index f5b3ea57..c4c245aa 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/rule.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/rule.cpp
@@ -26,14 +26,14 @@ rule::to_string() const
 void
 rule::to_json(json& j) const
 {
-    j = json{
-        { "location", location },
-        { "tags", tags },
-        { "keyword", keyword },
-        { "name", name },
-        { "description", description },
-        { "children", children },
-        { "id", id }
+    j[camelize("rule")] = json{
+        { camelize("location"), location },
+        { camelize("tags"), tags },
+        { camelize("keyword"), keyword },
+        { camelize("name"), name },
+        { camelize("description"), description },
+        { camelize("children"), children },
+        { camelize("id"), id }
     };
 }
 
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/rule_child.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/rule_child.cpp
index afda9f59..571a10ad 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/rule_child.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/rule_child.cpp
@@ -21,9 +21,9 @@ rule_child::to_string() const
 void
 rule_child::to_json(json& j) const
 {
-    j = json{
-        { "background", background },
-        { "scenario", scenario }
+    j[camelize("rule_child")] = json{
+        { camelize("background"), background },
+        { camelize("scenario"), scenario }
     };
 }
 
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/scenario.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/scenario.cpp
index fbaa9d82..52057593 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/scenario.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/scenario.cpp
@@ -27,15 +27,15 @@ scenario::to_string() const
 void
 scenario::to_json(json& j) const
 {
-    j = json{
-        { "location", location },
-        { "tags", tags },
-        { "keyword", keyword },
-        { "name", name },
-        { "description", description },
-        { "steps", steps },
-        { "examples", examples },
-        { "id", id }
+    j[camelize("scenario")] = json{
+        { camelize("location"), location },
+        { camelize("tags"), tags },
+        { camelize("keyword"), keyword },
+        { camelize("name"), name },
+        { camelize("description"), description },
+        { camelize("steps"), steps },
+        { camelize("examples"), examples },
+        { camelize("id"), id }
     };
 }
 
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/source.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/source.cpp
index 0c0979dd..1a32549c 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/source.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/source.cpp
@@ -22,10 +22,10 @@ source::to_string() const
 void
 source::to_json(json& j) const
 {
-    j = json{
-        { "uri", uri },
-        { "data", data },
-        { "media_type", media_type }
+    j[camelize("source")] = json{
+        { camelize("uri"), uri },
+        { camelize("data"), data },
+        { camelize("media_type"), media_type }
     };
 }
 
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/source_reference.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/source_reference.cpp
index a140f648..ef967967 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/source_reference.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/source_reference.cpp
@@ -23,11 +23,11 @@ source_reference::to_string() const
 void
 source_reference::to_json(json& j) const
 {
-    j = json{
-        { "uri", uri },
-        { "java_method", java_method },
-        { "java_stack_trace_element", java_stack_trace_element },
-        { "location", location }
+    j[camelize("source_reference")] = json{
+        { camelize("uri"), uri },
+        { camelize("java_method"), java_method },
+        { camelize("java_stack_trace_element"), java_stack_trace_element },
+        { camelize("location"), location }
     };
 }
 
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/step.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/step.cpp
index dbb2d6a2..7dd96f29 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/step.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/step.cpp
@@ -26,14 +26,14 @@ step::to_string() const
 void
 step::to_json(json& j) const
 {
-    j = json{
-        { "location", location },
-        { "keyword", keyword },
-        { "keyword_type", keyword_type },
-        { "text", text },
-        { "doc_string", doc_string },
-        { "data_table", data_table },
-        { "id", id }
+    j[camelize("step")] = json{
+        { camelize("location"), location },
+        { camelize("keyword"), keyword },
+        { camelize("keyword_type"), keyword_type },
+        { camelize("text"), text },
+        { camelize("doc_string"), doc_string },
+        { camelize("data_table"), data_table },
+        { camelize("id"), id }
     };
 }
 
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/step_definition.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/step_definition.cpp
index daabac54..41a74cb4 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/step_definition.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/step_definition.cpp
@@ -22,10 +22,10 @@ step_definition::to_string() const
 void
 step_definition::to_json(json& j) const
 {
-    j = json{
-        { "id", id },
-        { "pattern", pattern },
-        { "source_reference", source_reference }
+    j[camelize("step_definition")] = json{
+        { camelize("id"), id },
+        { camelize("pattern"), pattern },
+        { camelize("source_reference"), source_reference }
     };
 }
 
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/step_definition_pattern.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/step_definition_pattern.cpp
index 28a35afa..bb5b07ae 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/step_definition_pattern.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/step_definition_pattern.cpp
@@ -21,9 +21,9 @@ step_definition_pattern::to_string() const
 void
 step_definition_pattern::to_json(json& j) const
 {
-    j = json{
-        { "source", source },
-        { "type", type }
+    j[camelize("step_definition_pattern")] = json{
+        { camelize("source"), source },
+        { camelize("type"), type }
     };
 }
 
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/step_match_argument.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/step_match_argument.cpp
index a02845bf..5f8992a5 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/step_match_argument.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/step_match_argument.cpp
@@ -21,9 +21,9 @@ step_match_argument::to_string() const
 void
 step_match_argument::to_json(json& j) const
 {
-    j = json{
-        { "group", group },
-        { "parameter_type_name", parameter_type_name }
+    j[camelize("step_match_argument")] = json{
+        { camelize("group"), group },
+        { camelize("parameter_type_name"), parameter_type_name }
     };
 }
 
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/step_match_arguments_list.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/step_match_arguments_list.cpp
index c833025a..ff68ee33 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/step_match_arguments_list.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/step_match_arguments_list.cpp
@@ -20,8 +20,8 @@ step_match_arguments_list::to_string() const
 void
 step_match_arguments_list::to_json(json& j) const
 {
-    j = json{
-        { "step_match_arguments", step_match_arguments }
+    j[camelize("step_match_arguments_list")] = json{
+        { camelize("step_match_arguments"), step_match_arguments }
     };
 }
 
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/table_cell.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/table_cell.cpp
index 2fc1c3bd..3a452085 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/table_cell.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/table_cell.cpp
@@ -21,9 +21,9 @@ table_cell::to_string() const
 void
 table_cell::to_json(json& j) const
 {
-    j = json{
-        { "location", location },
-        { "value", value }
+    j[camelize("table_cell")] = json{
+        { camelize("location"), location },
+        { camelize("value"), value }
     };
 }
 
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/table_row.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/table_row.cpp
index 40f2c910..205bf4cd 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/table_row.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/table_row.cpp
@@ -22,10 +22,10 @@ table_row::to_string() const
 void
 table_row::to_json(json& j) const
 {
-    j = json{
-        { "location", location },
-        { "cells", cells },
-        { "id", id }
+    j[camelize("table_row")] = json{
+        { camelize("location"), location },
+        { camelize("cells"), cells },
+        { camelize("id"), id }
     };
 }
 
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/tag.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/tag.cpp
index 25d05ec5..28650508 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/tag.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/tag.cpp
@@ -22,10 +22,10 @@ tag::to_string() const
 void
 tag::to_json(json& j) const
 {
-    j = json{
-        { "location", location },
-        { "name", name },
-        { "id", id }
+    j[camelize("tag")] = json{
+        { camelize("location"), location },
+        { camelize("name"), name },
+        { camelize("id"), id }
     };
 }
 
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/test_case.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/test_case.cpp
index d47bde44..1b42b7b0 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/test_case.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/test_case.cpp
@@ -22,10 +22,10 @@ test_case::to_string() const
 void
 test_case::to_json(json& j) const
 {
-    j = json{
-        { "id", id },
-        { "pickle_id", pickle_id },
-        { "test_steps", test_steps }
+    j[camelize("test_case")] = json{
+        { camelize("id"), id },
+        { camelize("pickle_id"), pickle_id },
+        { camelize("test_steps"), test_steps }
     };
 }
 
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/test_case_finished.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/test_case_finished.cpp
index 96bac3fc..1ee91433 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/test_case_finished.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/test_case_finished.cpp
@@ -22,10 +22,10 @@ test_case_finished::to_string() const
 void
 test_case_finished::to_json(json& j) const
 {
-    j = json{
-        { "test_case_started_id", test_case_started_id },
-        { "timestamp", timestamp },
-        { "will_be_retried", will_be_retried }
+    j[camelize("test_case_finished")] = json{
+        { camelize("test_case_started_id"), test_case_started_id },
+        { camelize("timestamp"), timestamp },
+        { camelize("will_be_retried"), will_be_retried }
     };
 }
 
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/test_case_started.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/test_case_started.cpp
index 6f847d27..ce107961 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/test_case_started.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/test_case_started.cpp
@@ -24,12 +24,12 @@ test_case_started::to_string() const
 void
 test_case_started::to_json(json& j) const
 {
-    j = json{
-        { "attempt", attempt },
-        { "id", id },
-        { "test_case_id", test_case_id },
-        { "worker_id", worker_id },
-        { "timestamp", timestamp }
+    j[camelize("test_case_started")] = json{
+        { camelize("attempt"), attempt },
+        { camelize("id"), id },
+        { camelize("test_case_id"), test_case_id },
+        { camelize("worker_id"), worker_id },
+        { camelize("timestamp"), timestamp }
     };
 }
 
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/test_run_finished.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/test_run_finished.cpp
index 099184f3..6a17bf37 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/test_run_finished.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/test_run_finished.cpp
@@ -23,11 +23,11 @@ test_run_finished::to_string() const
 void
 test_run_finished::to_json(json& j) const
 {
-    j = json{
-        { "message", message },
-        { "success", success },
-        { "timestamp", timestamp },
-        { "exception", exception }
+    j[camelize("test_run_finished")] = json{
+        { camelize("message"), message },
+        { camelize("success"), success },
+        { camelize("timestamp"), timestamp },
+        { camelize("exception"), exception }
     };
 }
 
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/test_run_started.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/test_run_started.cpp
index e0759b5b..38eb18c6 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/test_run_started.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/test_run_started.cpp
@@ -20,8 +20,8 @@ test_run_started::to_string() const
 void
 test_run_started::to_json(json& j) const
 {
-    j = json{
-        { "timestamp", timestamp }
+    j[camelize("test_run_started")] = json{
+        { camelize("timestamp"), timestamp }
     };
 }
 
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/test_step.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/test_step.cpp
index 7771ca84..0da50845 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/test_step.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/test_step.cpp
@@ -24,12 +24,12 @@ test_step::to_string() const
 void
 test_step::to_json(json& j) const
 {
-    j = json{
-        { "hook_id", hook_id },
-        { "id", id },
-        { "pickle_step_id", pickle_step_id },
-        { "step_definition_ids", step_definition_ids },
-        { "step_match_arguments_lists", step_match_arguments_lists }
+    j[camelize("test_step")] = json{
+        { camelize("hook_id"), hook_id },
+        { camelize("id"), id },
+        { camelize("pickle_step_id"), pickle_step_id },
+        { camelize("step_definition_ids"), step_definition_ids },
+        { camelize("step_match_arguments_lists"), step_match_arguments_lists }
     };
 }
 
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/test_step_finished.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/test_step_finished.cpp
index e4fcf793..3df00cf1 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/test_step_finished.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/test_step_finished.cpp
@@ -23,11 +23,11 @@ test_step_finished::to_string() const
 void
 test_step_finished::to_json(json& j) const
 {
-    j = json{
-        { "test_case_started_id", test_case_started_id },
-        { "test_step_id", test_step_id },
-        { "test_step_result", test_step_result },
-        { "timestamp", timestamp }
+    j[camelize("test_step_finished")] = json{
+        { camelize("test_case_started_id"), test_case_started_id },
+        { camelize("test_step_id"), test_step_id },
+        { camelize("test_step_result"), test_step_result },
+        { camelize("timestamp"), timestamp }
     };
 }
 
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/test_step_result.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/test_step_result.cpp
index 11c4b57a..39e62791 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/test_step_result.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/test_step_result.cpp
@@ -23,11 +23,11 @@ test_step_result::to_string() const
 void
 test_step_result::to_json(json& j) const
 {
-    j = json{
-        { "duration", duration },
-        { "message", message },
-        { "status", status },
-        { "exception", exception }
+    j[camelize("test_step_result")] = json{
+        { camelize("duration"), duration },
+        { camelize("message"), message },
+        { camelize("status"), status },
+        { camelize("exception"), exception }
     };
 }
 
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/test_step_started.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/test_step_started.cpp
index a7da4c76..60310f12 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/test_step_started.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/test_step_started.cpp
@@ -22,10 +22,10 @@ test_step_started::to_string() const
 void
 test_step_started::to_json(json& j) const
 {
-    j = json{
-        { "test_case_started_id", test_case_started_id },
-        { "test_step_id", test_step_id },
-        { "timestamp", timestamp }
+    j[camelize("test_step_started")] = json{
+        { camelize("test_case_started_id"), test_case_started_id },
+        { camelize("test_step_id"), test_step_id },
+        { camelize("timestamp"), timestamp }
     };
 }
 
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/timestamp.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/timestamp.cpp
index 53342250..3b9669da 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/timestamp.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/timestamp.cpp
@@ -21,9 +21,9 @@ timestamp::to_string() const
 void
 timestamp::to_json(json& j) const
 {
-    j = json{
-        { "seconds", seconds },
-        { "nanos", nanos }
+    j[camelize("timestamp")] = json{
+        { camelize("seconds"), seconds },
+        { camelize("nanos"), nanos }
     };
 }
 
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/undefined_parameter_type.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/undefined_parameter_type.cpp
index e017e3ca..2c20864f 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/undefined_parameter_type.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/undefined_parameter_type.cpp
@@ -21,9 +21,9 @@ undefined_parameter_type::to_string() const
 void
 undefined_parameter_type::to_json(json& j) const
 {
-    j = json{
-        { "expression", expression },
-        { "name", name }
+    j[camelize("undefined_parameter_type")] = json{
+        { camelize("expression"), expression },
+        { camelize("name"), name }
     };
 }
 
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/utils.hpp b/cpp/src/lib/cucumber-messages/cucumber/messages/utils.hpp
index 0dfb0678..faf9018b 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/utils.hpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/utils.hpp
@@ -5,6 +5,9 @@
 
 namespace cucumber::messages {
 
+std::string
+camelize(std::string s, bool initial_tail = true);
+
 template <typename Msg>
 std::ostream&
 operator<<(std::ostream& os, const std::vector<Msg>& msgs)
diff --git a/jsonschema/scripts/templates/cpp.hpp.erb b/jsonschema/scripts/templates/cpp.hpp.erb
index b3fb2d6a..35ec2b85 100644
--- a/jsonschema/scripts/templates/cpp.hpp.erb
+++ b/jsonschema/scripts/templates/cpp.hpp.erb
@@ -101,13 +101,13 @@ void
     schema['properties'].each_with_index do |(property_name, property), index|
         type = underscore(type_for(class_name(key), property_name, property))
         expr = "{ "
-        expr += '"' + underscore(property_name) + '"'
+        expr += 'camelize("' + underscore(property_name) + '")'
         expr += ", " + underscore(property_name)
         expr += " }"
         exprs.append(expr)
     end
     -%>
-    j = json{
+    j[camelize("<%= myclass %>")] = json{
         <%= exprs.join(",\n        ") %>
     };
 }

From 667c99ff27b6a1a9614c61547372529e6f75108b Mon Sep 17 00:00:00 2001
From: Remy Chibois <remy@chybz.net>
Date: Wed, 10 May 2023 18:46:46 +0200
Subject: [PATCH 13/26] chore: missing source file

---
 .../cucumber/messages/utils.cpp               | 28 +++++++++++++++++++
 1 file changed, 28 insertions(+)
 create mode 100644 cpp/src/lib/cucumber-messages/cucumber/messages/utils.cpp

diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/utils.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/utils.cpp
new file mode 100644
index 00000000..63efca21
--- /dev/null
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/utils.cpp
@@ -0,0 +1,28 @@
+#include <cucumber/messages/utils.hpp>
+
+namespace cucumber::messages {
+
+// https://codereview.stackexchange.com/questions/263749/codewars-kata-converting-snake-case-identifiers-to-camelcase-in-c
+std::string
+camelize(std::string s, bool initial_tail)
+{
+    std::size_t n = 0;
+    bool tail = initial_tail;
+
+    for (unsigned char c : s) {
+        if (c == '-' || c == '_') {
+            tail = false;
+        } else if (tail) {
+            s[n++] = c;
+        } else {
+            tail = true;
+            s[n++] = std::toupper(c);
+        }
+    }
+
+    s.resize(n);
+
+    return s;
+}
+
+}

From 6cdf78e23c43337283557a98ffc9daec06afea75 Mon Sep 17 00:00:00 2001
From: Remy Chibois <rcs@weez-u-welding.com>
Date: Thu, 11 May 2023 14:35:10 +0200
Subject: [PATCH 14/26] chore: serialization fixes

---
 .../cucumber/messages/attachment.cpp          | 18 +++++-----
 .../cucumber/messages/background.cpp          | 14 ++++----
 .../cucumber/messages/ci.cpp                  | 10 +++---
 .../cucumber/messages/comment.cpp             |  6 ++--
 .../cucumber/messages/data_table.cpp          |  6 ++--
 .../cucumber/messages/doc_string.cpp          | 10 +++---
 .../cucumber/messages/duration.cpp            |  6 ++--
 .../cucumber/messages/envelope.cpp            | 36 +++++++++----------
 .../cucumber/messages/examples.cpp            | 18 +++++-----
 .../cucumber/messages/exception.cpp           |  6 ++--
 .../cucumber/messages/feature.cpp             | 16 ++++-----
 .../cucumber/messages/feature_child.cpp       |  8 ++---
 .../cucumber/messages/gherkin_document.cpp    |  8 ++---
 .../cucumber/messages/git.cpp                 | 10 +++---
 .../cucumber/messages/group.cpp               |  8 ++---
 .../cucumber/messages/hook.cpp                | 10 +++---
 .../cucumber/messages/java_method.cpp         |  8 ++---
 .../messages/java_stack_trace_element.cpp     |  8 ++---
 .../cucumber/messages/location.cpp            |  6 ++--
 .../cucumber/messages/meta.cpp                | 14 ++++----
 .../cucumber/messages/parameter_type.cpp      | 14 ++++----
 .../cucumber/messages/parse_error.cpp         |  6 ++--
 .../cucumber/messages/pickle.cpp              | 16 ++++-----
 .../cucumber/messages/pickle_doc_string.cpp   |  6 ++--
 .../cucumber/messages/pickle_step.cpp         | 12 +++----
 .../messages/pickle_step_argument.cpp         |  6 ++--
 .../cucumber/messages/pickle_table.cpp        |  4 +--
 .../cucumber/messages/pickle_table_cell.cpp   |  4 +--
 .../cucumber/messages/pickle_table_row.cpp    |  4 +--
 .../cucumber/messages/pickle_tag.cpp          |  6 ++--
 .../cucumber/messages/product.cpp             |  6 ++--
 .../cucumber/messages/rule.cpp                | 16 ++++-----
 .../cucumber/messages/rule_child.cpp          |  6 ++--
 .../cucumber/messages/scenario.cpp            | 18 +++++-----
 .../cucumber/messages/source.cpp              |  8 ++---
 .../cucumber/messages/source_reference.cpp    | 10 +++---
 .../cucumber/messages/step.cpp                | 16 ++++-----
 .../cucumber/messages/step_definition.cpp     |  8 ++---
 .../messages/step_definition_pattern.cpp      |  6 ++--
 .../cucumber/messages/step_match_argument.cpp |  6 ++--
 .../messages/step_match_arguments_list.cpp    |  4 +--
 .../cucumber/messages/table_cell.cpp          |  6 ++--
 .../cucumber/messages/table_row.cpp           |  8 ++---
 .../cucumber/messages/tag.cpp                 |  8 ++---
 .../cucumber/messages/test_case.cpp           |  8 ++---
 .../cucumber/messages/test_case_finished.cpp  |  8 ++---
 .../cucumber/messages/test_case_started.cpp   | 12 +++----
 .../cucumber/messages/test_run_finished.cpp   | 10 +++---
 .../cucumber/messages/test_run_started.cpp    |  4 +--
 .../cucumber/messages/test_step.cpp           | 12 +++----
 .../cucumber/messages/test_step_finished.cpp  | 10 +++---
 .../cucumber/messages/test_step_result.cpp    | 10 +++---
 .../cucumber/messages/test_step_started.cpp   |  8 ++---
 .../cucumber/messages/timestamp.cpp           |  6 ++--
 .../messages/undefined_parameter_type.cpp     |  6 ++--
 jsonschema/scripts/templates/cpp.hpp.erb      |  4 +--
 56 files changed, 264 insertions(+), 264 deletions(-)

diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/attachment.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/attachment.cpp
index 2db15cfb..94dc9368 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/attachment.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/attachment.cpp
@@ -11,14 +11,14 @@ attachment::to_string() const
     std::ostringstream oss;
 
     oss
-    << "body=" << body
-    << ", content_encoding=" << content_encoding
-    << ", file_name=" << file_name
-    << ", media_type=" << media_type
-    << ", source=" << source
-    << ", test_case_started_id=" << test_case_started_id
-    << ", test_step_id=" << test_step_id
-    << ", url=" << url
+        << "body=" << body
+        << ", content_encoding=" << content_encoding
+        << ", file_name=" << file_name
+        << ", media_type=" << media_type
+        << ", source=" << source
+        << ", test_case_started_id=" << test_case_started_id
+        << ", test_step_id=" << test_step_id
+        << ", url=" << url
         ;
 
     return oss.str();
@@ -27,7 +27,7 @@ attachment::to_string() const
 void
 attachment::to_json(json& j) const
 {
-    j[camelize("attachment")] = json{
+    j = json{
         { camelize("body"), body },
         { camelize("content_encoding"), content_encoding },
         { camelize("file_name"), file_name },
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/background.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/background.cpp
index 7aab60e9..624bb2cb 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/background.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/background.cpp
@@ -11,12 +11,12 @@ background::to_string() const
     std::ostringstream oss;
 
     oss
-    << "location=" << location
-    << ", keyword=" << keyword
-    << ", name=" << name
-    << ", description=" << description
-    << ", steps=" << steps
-    << ", id=" << id
+        << "location=" << location
+        << ", keyword=" << keyword
+        << ", name=" << name
+        << ", description=" << description
+        << ", steps=" << steps
+        << ", id=" << id
         ;
 
     return oss.str();
@@ -25,7 +25,7 @@ background::to_string() const
 void
 background::to_json(json& j) const
 {
-    j[camelize("background")] = json{
+    j = json{
         { camelize("location"), location },
         { camelize("keyword"), keyword },
         { camelize("name"), name },
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/ci.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/ci.cpp
index 5da2f504..cf5d3243 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/ci.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/ci.cpp
@@ -11,10 +11,10 @@ ci::to_string() const
     std::ostringstream oss;
 
     oss
-    << "name=" << name
-    << ", url=" << url
-    << ", build_number=" << build_number
-    << ", git=" << git
+        << "name=" << name
+        << ", url=" << url
+        << ", build_number=" << build_number
+        << ", git=" << git
         ;
 
     return oss.str();
@@ -23,7 +23,7 @@ ci::to_string() const
 void
 ci::to_json(json& j) const
 {
-    j[camelize("ci")] = json{
+    j = json{
         { camelize("name"), name },
         { camelize("url"), url },
         { camelize("build_number"), build_number },
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/comment.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/comment.cpp
index 94f8ddbf..31bb9554 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/comment.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/comment.cpp
@@ -11,8 +11,8 @@ comment::to_string() const
     std::ostringstream oss;
 
     oss
-    << "location=" << location
-    << ", text=" << text
+        << "location=" << location
+        << ", text=" << text
         ;
 
     return oss.str();
@@ -21,7 +21,7 @@ comment::to_string() const
 void
 comment::to_json(json& j) const
 {
-    j[camelize("comment")] = json{
+    j = json{
         { camelize("location"), location },
         { camelize("text"), text }
     };
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/data_table.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/data_table.cpp
index 7fff82fb..9913de13 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/data_table.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/data_table.cpp
@@ -11,8 +11,8 @@ data_table::to_string() const
     std::ostringstream oss;
 
     oss
-    << "location=" << location
-    << ", rows=" << rows
+        << "location=" << location
+        << ", rows=" << rows
         ;
 
     return oss.str();
@@ -21,7 +21,7 @@ data_table::to_string() const
 void
 data_table::to_json(json& j) const
 {
-    j[camelize("data_table")] = json{
+    j = json{
         { camelize("location"), location },
         { camelize("rows"), rows }
     };
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/doc_string.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/doc_string.cpp
index d1bcd8c3..fff7e831 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/doc_string.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/doc_string.cpp
@@ -11,10 +11,10 @@ doc_string::to_string() const
     std::ostringstream oss;
 
     oss
-    << "location=" << location
-    << ", media_type=" << media_type
-    << ", content=" << content
-    << ", delimiter=" << delimiter
+        << "location=" << location
+        << ", media_type=" << media_type
+        << ", content=" << content
+        << ", delimiter=" << delimiter
         ;
 
     return oss.str();
@@ -23,7 +23,7 @@ doc_string::to_string() const
 void
 doc_string::to_json(json& j) const
 {
-    j[camelize("doc_string")] = json{
+    j = json{
         { camelize("location"), location },
         { camelize("media_type"), media_type },
         { camelize("content"), content },
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/duration.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/duration.cpp
index ff39d9ef..b02ca03c 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/duration.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/duration.cpp
@@ -11,8 +11,8 @@ duration::to_string() const
     std::ostringstream oss;
 
     oss
-    << "seconds=" << seconds
-    << ", nanos=" << nanos
+        << "seconds=" << seconds
+        << ", nanos=" << nanos
         ;
 
     return oss.str();
@@ -21,7 +21,7 @@ duration::to_string() const
 void
 duration::to_json(json& j) const
 {
-    j[camelize("duration")] = json{
+    j = json{
         { camelize("seconds"), seconds },
         { camelize("nanos"), nanos }
     };
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/envelope.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/envelope.cpp
index ef05cb7e..b8a6272b 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/envelope.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/envelope.cpp
@@ -11,23 +11,23 @@ envelope::to_string() const
     std::ostringstream oss;
 
     oss
-    << "attachment=" << attachment
-    << ", gherkin_document=" << gherkin_document
-    << ", hook=" << hook
-    << ", meta=" << meta
-    << ", parameter_type=" << parameter_type
-    << ", parse_error=" << parse_error
-    << ", pickle=" << pickle
-    << ", source=" << source
-    << ", step_definition=" << step_definition
-    << ", test_case=" << test_case
-    << ", test_case_finished=" << test_case_finished
-    << ", test_case_started=" << test_case_started
-    << ", test_run_finished=" << test_run_finished
-    << ", test_run_started=" << test_run_started
-    << ", test_step_finished=" << test_step_finished
-    << ", test_step_started=" << test_step_started
-    << ", undefined_parameter_type=" << undefined_parameter_type
+        << "attachment=" << attachment
+        << ", gherkin_document=" << gherkin_document
+        << ", hook=" << hook
+        << ", meta=" << meta
+        << ", parameter_type=" << parameter_type
+        << ", parse_error=" << parse_error
+        << ", pickle=" << pickle
+        << ", source=" << source
+        << ", step_definition=" << step_definition
+        << ", test_case=" << test_case
+        << ", test_case_finished=" << test_case_finished
+        << ", test_case_started=" << test_case_started
+        << ", test_run_finished=" << test_run_finished
+        << ", test_run_started=" << test_run_started
+        << ", test_step_finished=" << test_step_finished
+        << ", test_step_started=" << test_step_started
+        << ", undefined_parameter_type=" << undefined_parameter_type
         ;
 
     return oss.str();
@@ -36,7 +36,7 @@ envelope::to_string() const
 void
 envelope::to_json(json& j) const
 {
-    j[camelize("envelope")] = json{
+    j = json{
         { camelize("attachment"), attachment },
         { camelize("gherkin_document"), gherkin_document },
         { camelize("hook"), hook },
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/examples.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/examples.cpp
index b8d38b70..9aa88596 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/examples.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/examples.cpp
@@ -11,14 +11,14 @@ examples::to_string() const
     std::ostringstream oss;
 
     oss
-    << "location=" << location
-    << ", tags=" << tags
-    << ", keyword=" << keyword
-    << ", name=" << name
-    << ", description=" << description
-    << ", table_header=" << table_header
-    << ", table_body=" << table_body
-    << ", id=" << id
+        << "location=" << location
+        << ", tags=" << tags
+        << ", keyword=" << keyword
+        << ", name=" << name
+        << ", description=" << description
+        << ", table_header=" << table_header
+        << ", table_body=" << table_body
+        << ", id=" << id
         ;
 
     return oss.str();
@@ -27,7 +27,7 @@ examples::to_string() const
 void
 examples::to_json(json& j) const
 {
-    j[camelize("examples")] = json{
+    j = json{
         { camelize("location"), location },
         { camelize("tags"), tags },
         { camelize("keyword"), keyword },
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/exception.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/exception.cpp
index e5be6965..e2bb3d49 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/exception.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/exception.cpp
@@ -11,8 +11,8 @@ exception::to_string() const
     std::ostringstream oss;
 
     oss
-    << "type=" << type
-    << ", message=" << message
+        << "type=" << type
+        << ", message=" << message
         ;
 
     return oss.str();
@@ -21,7 +21,7 @@ exception::to_string() const
 void
 exception::to_json(json& j) const
 {
-    j[camelize("exception")] = json{
+    j = json{
         { camelize("type"), type },
         { camelize("message"), message }
     };
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/feature.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/feature.cpp
index 70871fb8..69cdfe01 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/feature.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/feature.cpp
@@ -11,13 +11,13 @@ feature::to_string() const
     std::ostringstream oss;
 
     oss
-    << "location=" << location
-    << ", tags=" << tags
-    << ", language=" << language
-    << ", keyword=" << keyword
-    << ", name=" << name
-    << ", description=" << description
-    << ", children=" << children
+        << "location=" << location
+        << ", tags=" << tags
+        << ", language=" << language
+        << ", keyword=" << keyword
+        << ", name=" << name
+        << ", description=" << description
+        << ", children=" << children
         ;
 
     return oss.str();
@@ -26,7 +26,7 @@ feature::to_string() const
 void
 feature::to_json(json& j) const
 {
-    j[camelize("feature")] = json{
+    j = json{
         { camelize("location"), location },
         { camelize("tags"), tags },
         { camelize("language"), language },
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/feature_child.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/feature_child.cpp
index d837b0fa..420caf22 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/feature_child.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/feature_child.cpp
@@ -11,9 +11,9 @@ feature_child::to_string() const
     std::ostringstream oss;
 
     oss
-    << "rule=" << rule
-    << ", background=" << background
-    << ", scenario=" << scenario
+        << "rule=" << rule
+        << ", background=" << background
+        << ", scenario=" << scenario
         ;
 
     return oss.str();
@@ -22,7 +22,7 @@ feature_child::to_string() const
 void
 feature_child::to_json(json& j) const
 {
-    j[camelize("feature_child")] = json{
+    j = json{
         { camelize("rule"), rule },
         { camelize("background"), background },
         { camelize("scenario"), scenario }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/gherkin_document.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/gherkin_document.cpp
index 8b902966..9934b562 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/gherkin_document.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/gherkin_document.cpp
@@ -11,9 +11,9 @@ gherkin_document::to_string() const
     std::ostringstream oss;
 
     oss
-    << "uri=" << uri
-    << ", feature=" << feature
-    << ", comments=" << comments
+        << "uri=" << uri
+        << ", feature=" << feature
+        << ", comments=" << comments
         ;
 
     return oss.str();
@@ -22,7 +22,7 @@ gherkin_document::to_string() const
 void
 gherkin_document::to_json(json& j) const
 {
-    j[camelize("gherkin_document")] = json{
+    j = json{
         { camelize("uri"), uri },
         { camelize("feature"), feature },
         { camelize("comments"), comments }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/git.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/git.cpp
index a265e843..9db80dfa 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/git.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/git.cpp
@@ -11,10 +11,10 @@ git::to_string() const
     std::ostringstream oss;
 
     oss
-    << "remote=" << remote
-    << ", revision=" << revision
-    << ", branch=" << branch
-    << ", tag=" << tag
+        << "remote=" << remote
+        << ", revision=" << revision
+        << ", branch=" << branch
+        << ", tag=" << tag
         ;
 
     return oss.str();
@@ -23,7 +23,7 @@ git::to_string() const
 void
 git::to_json(json& j) const
 {
-    j[camelize("git")] = json{
+    j = json{
         { camelize("remote"), remote },
         { camelize("revision"), revision },
         { camelize("branch"), branch },
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/group.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/group.cpp
index 2ecab69d..58d1c0b3 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/group.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/group.cpp
@@ -11,9 +11,9 @@ group::to_string() const
     std::ostringstream oss;
 
     oss
-    << "children=" << children
-    << ", start=" << start
-    << ", value=" << value
+        << "children=" << children
+        << ", start=" << start
+        << ", value=" << value
         ;
 
     return oss.str();
@@ -22,7 +22,7 @@ group::to_string() const
 void
 group::to_json(json& j) const
 {
-    j[camelize("group")] = json{
+    j = json{
         { camelize("children"), children },
         { camelize("start"), start },
         { camelize("value"), value }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/hook.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/hook.cpp
index bfc73102..e5bd639e 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/hook.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/hook.cpp
@@ -11,10 +11,10 @@ hook::to_string() const
     std::ostringstream oss;
 
     oss
-    << "id=" << id
-    << ", name=" << name
-    << ", source_reference=" << source_reference
-    << ", tag_expression=" << tag_expression
+        << "id=" << id
+        << ", name=" << name
+        << ", source_reference=" << source_reference
+        << ", tag_expression=" << tag_expression
         ;
 
     return oss.str();
@@ -23,7 +23,7 @@ hook::to_string() const
 void
 hook::to_json(json& j) const
 {
-    j[camelize("hook")] = json{
+    j = json{
         { camelize("id"), id },
         { camelize("name"), name },
         { camelize("source_reference"), source_reference },
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/java_method.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/java_method.cpp
index ce051b0b..462288bd 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/java_method.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/java_method.cpp
@@ -11,9 +11,9 @@ java_method::to_string() const
     std::ostringstream oss;
 
     oss
-    << "class_name=" << class_name
-    << ", method_name=" << method_name
-    << ", method_parameter_types=" << method_parameter_types
+        << "class_name=" << class_name
+        << ", method_name=" << method_name
+        << ", method_parameter_types=" << method_parameter_types
         ;
 
     return oss.str();
@@ -22,7 +22,7 @@ java_method::to_string() const
 void
 java_method::to_json(json& j) const
 {
-    j[camelize("java_method")] = json{
+    j = json{
         { camelize("class_name"), class_name },
         { camelize("method_name"), method_name },
         { camelize("method_parameter_types"), method_parameter_types }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/java_stack_trace_element.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/java_stack_trace_element.cpp
index 88b9940b..3176623b 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/java_stack_trace_element.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/java_stack_trace_element.cpp
@@ -11,9 +11,9 @@ java_stack_trace_element::to_string() const
     std::ostringstream oss;
 
     oss
-    << "class_name=" << class_name
-    << ", file_name=" << file_name
-    << ", method_name=" << method_name
+        << "class_name=" << class_name
+        << ", file_name=" << file_name
+        << ", method_name=" << method_name
         ;
 
     return oss.str();
@@ -22,7 +22,7 @@ java_stack_trace_element::to_string() const
 void
 java_stack_trace_element::to_json(json& j) const
 {
-    j[camelize("java_stack_trace_element")] = json{
+    j = json{
         { camelize("class_name"), class_name },
         { camelize("file_name"), file_name },
         { camelize("method_name"), method_name }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/location.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/location.cpp
index 1b652293..20c82330 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/location.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/location.cpp
@@ -11,8 +11,8 @@ location::to_string() const
     std::ostringstream oss;
 
     oss
-    << "line=" << line
-    << ", column=" << column
+        << "line=" << line
+        << ", column=" << column
         ;
 
     return oss.str();
@@ -21,7 +21,7 @@ location::to_string() const
 void
 location::to_json(json& j) const
 {
-    j[camelize("location")] = json{
+    j = json{
         { camelize("line"), line },
         { camelize("column"), column }
     };
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/meta.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/meta.cpp
index d7c099dc..fb875afe 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/meta.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/meta.cpp
@@ -11,12 +11,12 @@ meta::to_string() const
     std::ostringstream oss;
 
     oss
-    << "protocol_version=" << protocol_version
-    << ", implementation=" << implementation
-    << ", runtime=" << runtime
-    << ", os=" << os
-    << ", cpu=" << cpu
-    << ", ci=" << ci
+        << "protocol_version=" << protocol_version
+        << ", implementation=" << implementation
+        << ", runtime=" << runtime
+        << ", os=" << os
+        << ", cpu=" << cpu
+        << ", ci=" << ci
         ;
 
     return oss.str();
@@ -25,7 +25,7 @@ meta::to_string() const
 void
 meta::to_json(json& j) const
 {
-    j[camelize("meta")] = json{
+    j = json{
         { camelize("protocol_version"), protocol_version },
         { camelize("implementation"), implementation },
         { camelize("runtime"), runtime },
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/parameter_type.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/parameter_type.cpp
index 6dd73065..7daf1d8c 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/parameter_type.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/parameter_type.cpp
@@ -11,12 +11,12 @@ parameter_type::to_string() const
     std::ostringstream oss;
 
     oss
-    << "name=" << name
-    << ", regular_expressions=" << regular_expressions
-    << ", prefer_for_regular_expression_match=" << prefer_for_regular_expression_match
-    << ", use_for_snippets=" << use_for_snippets
-    << ", id=" << id
-    << ", source_reference=" << source_reference
+        << "name=" << name
+        << ", regular_expressions=" << regular_expressions
+        << ", prefer_for_regular_expression_match=" << prefer_for_regular_expression_match
+        << ", use_for_snippets=" << use_for_snippets
+        << ", id=" << id
+        << ", source_reference=" << source_reference
         ;
 
     return oss.str();
@@ -25,7 +25,7 @@ parameter_type::to_string() const
 void
 parameter_type::to_json(json& j) const
 {
-    j[camelize("parameter_type")] = json{
+    j = json{
         { camelize("name"), name },
         { camelize("regular_expressions"), regular_expressions },
         { camelize("prefer_for_regular_expression_match"), prefer_for_regular_expression_match },
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/parse_error.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/parse_error.cpp
index 9d2bd60a..0317c37d 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/parse_error.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/parse_error.cpp
@@ -11,8 +11,8 @@ parse_error::to_string() const
     std::ostringstream oss;
 
     oss
-    << "source=" << source
-    << ", message=" << message
+        << "source=" << source
+        << ", message=" << message
         ;
 
     return oss.str();
@@ -21,7 +21,7 @@ parse_error::to_string() const
 void
 parse_error::to_json(json& j) const
 {
-    j[camelize("parse_error")] = json{
+    j = json{
         { camelize("source"), source },
         { camelize("message"), message }
     };
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/pickle.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/pickle.cpp
index 6277bcf3..c37cacdc 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/pickle.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/pickle.cpp
@@ -11,13 +11,13 @@ pickle::to_string() const
     std::ostringstream oss;
 
     oss
-    << "id=" << id
-    << ", uri=" << uri
-    << ", name=" << name
-    << ", language=" << language
-    << ", steps=" << steps
-    << ", tags=" << tags
-    << ", ast_node_ids=" << ast_node_ids
+        << "id=" << id
+        << ", uri=" << uri
+        << ", name=" << name
+        << ", language=" << language
+        << ", steps=" << steps
+        << ", tags=" << tags
+        << ", ast_node_ids=" << ast_node_ids
         ;
 
     return oss.str();
@@ -26,7 +26,7 @@ pickle::to_string() const
 void
 pickle::to_json(json& j) const
 {
-    j[camelize("pickle")] = json{
+    j = json{
         { camelize("id"), id },
         { camelize("uri"), uri },
         { camelize("name"), name },
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_doc_string.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_doc_string.cpp
index 600ecb19..57059fb3 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_doc_string.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_doc_string.cpp
@@ -11,8 +11,8 @@ pickle_doc_string::to_string() const
     std::ostringstream oss;
 
     oss
-    << "media_type=" << media_type
-    << ", content=" << content
+        << "media_type=" << media_type
+        << ", content=" << content
         ;
 
     return oss.str();
@@ -21,7 +21,7 @@ pickle_doc_string::to_string() const
 void
 pickle_doc_string::to_json(json& j) const
 {
-    j[camelize("pickle_doc_string")] = json{
+    j = json{
         { camelize("media_type"), media_type },
         { camelize("content"), content }
     };
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_step.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_step.cpp
index 6fa58069..c7b12118 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_step.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_step.cpp
@@ -11,11 +11,11 @@ pickle_step::to_string() const
     std::ostringstream oss;
 
     oss
-    << "argument=" << argument
-    << ", ast_node_ids=" << ast_node_ids
-    << ", id=" << id
-    << ", type=" << type
-    << ", text=" << text
+        << "argument=" << argument
+        << ", ast_node_ids=" << ast_node_ids
+        << ", id=" << id
+        << ", type=" << type
+        << ", text=" << text
         ;
 
     return oss.str();
@@ -24,7 +24,7 @@ pickle_step::to_string() const
 void
 pickle_step::to_json(json& j) const
 {
-    j[camelize("pickle_step")] = json{
+    j = json{
         { camelize("argument"), argument },
         { camelize("ast_node_ids"), ast_node_ids },
         { camelize("id"), id },
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_step_argument.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_step_argument.cpp
index 0a6a841d..b54e4f0c 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_step_argument.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_step_argument.cpp
@@ -11,8 +11,8 @@ pickle_step_argument::to_string() const
     std::ostringstream oss;
 
     oss
-    << "doc_string=" << doc_string
-    << ", data_table=" << data_table
+        << "doc_string=" << doc_string
+        << ", data_table=" << data_table
         ;
 
     return oss.str();
@@ -21,7 +21,7 @@ pickle_step_argument::to_string() const
 void
 pickle_step_argument::to_json(json& j) const
 {
-    j[camelize("pickle_step_argument")] = json{
+    j = json{
         { camelize("doc_string"), doc_string },
         { camelize("data_table"), data_table }
     };
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_table.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_table.cpp
index 1cfd56a8..0f16c757 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_table.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_table.cpp
@@ -11,7 +11,7 @@ pickle_table::to_string() const
     std::ostringstream oss;
 
     oss
-    << "rows=" << rows
+        << "rows=" << rows
         ;
 
     return oss.str();
@@ -20,7 +20,7 @@ pickle_table::to_string() const
 void
 pickle_table::to_json(json& j) const
 {
-    j[camelize("pickle_table")] = json{
+    j = json{
         { camelize("rows"), rows }
     };
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_table_cell.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_table_cell.cpp
index 01f12fa6..b1591e5c 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_table_cell.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_table_cell.cpp
@@ -11,7 +11,7 @@ pickle_table_cell::to_string() const
     std::ostringstream oss;
 
     oss
-    << "value=" << value
+        << "value=" << value
         ;
 
     return oss.str();
@@ -20,7 +20,7 @@ pickle_table_cell::to_string() const
 void
 pickle_table_cell::to_json(json& j) const
 {
-    j[camelize("pickle_table_cell")] = json{
+    j = json{
         { camelize("value"), value }
     };
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_table_row.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_table_row.cpp
index 6d867614..da3ed5ac 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_table_row.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_table_row.cpp
@@ -11,7 +11,7 @@ pickle_table_row::to_string() const
     std::ostringstream oss;
 
     oss
-    << "cells=" << cells
+        << "cells=" << cells
         ;
 
     return oss.str();
@@ -20,7 +20,7 @@ pickle_table_row::to_string() const
 void
 pickle_table_row::to_json(json& j) const
 {
-    j[camelize("pickle_table_row")] = json{
+    j = json{
         { camelize("cells"), cells }
     };
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_tag.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_tag.cpp
index 4b6ebabf..07744d60 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_tag.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_tag.cpp
@@ -11,8 +11,8 @@ pickle_tag::to_string() const
     std::ostringstream oss;
 
     oss
-    << "name=" << name
-    << ", ast_node_id=" << ast_node_id
+        << "name=" << name
+        << ", ast_node_id=" << ast_node_id
         ;
 
     return oss.str();
@@ -21,7 +21,7 @@ pickle_tag::to_string() const
 void
 pickle_tag::to_json(json& j) const
 {
-    j[camelize("pickle_tag")] = json{
+    j = json{
         { camelize("name"), name },
         { camelize("ast_node_id"), ast_node_id }
     };
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/product.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/product.cpp
index 240a8d64..a4d2c3f3 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/product.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/product.cpp
@@ -11,8 +11,8 @@ product::to_string() const
     std::ostringstream oss;
 
     oss
-    << "name=" << name
-    << ", version=" << version
+        << "name=" << name
+        << ", version=" << version
         ;
 
     return oss.str();
@@ -21,7 +21,7 @@ product::to_string() const
 void
 product::to_json(json& j) const
 {
-    j[camelize("product")] = json{
+    j = json{
         { camelize("name"), name },
         { camelize("version"), version }
     };
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/rule.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/rule.cpp
index c4c245aa..ae93eb47 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/rule.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/rule.cpp
@@ -11,13 +11,13 @@ rule::to_string() const
     std::ostringstream oss;
 
     oss
-    << "location=" << location
-    << ", tags=" << tags
-    << ", keyword=" << keyword
-    << ", name=" << name
-    << ", description=" << description
-    << ", children=" << children
-    << ", id=" << id
+        << "location=" << location
+        << ", tags=" << tags
+        << ", keyword=" << keyword
+        << ", name=" << name
+        << ", description=" << description
+        << ", children=" << children
+        << ", id=" << id
         ;
 
     return oss.str();
@@ -26,7 +26,7 @@ rule::to_string() const
 void
 rule::to_json(json& j) const
 {
-    j[camelize("rule")] = json{
+    j = json{
         { camelize("location"), location },
         { camelize("tags"), tags },
         { camelize("keyword"), keyword },
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/rule_child.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/rule_child.cpp
index 571a10ad..0be078d6 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/rule_child.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/rule_child.cpp
@@ -11,8 +11,8 @@ rule_child::to_string() const
     std::ostringstream oss;
 
     oss
-    << "background=" << background
-    << ", scenario=" << scenario
+        << "background=" << background
+        << ", scenario=" << scenario
         ;
 
     return oss.str();
@@ -21,7 +21,7 @@ rule_child::to_string() const
 void
 rule_child::to_json(json& j) const
 {
-    j[camelize("rule_child")] = json{
+    j = json{
         { camelize("background"), background },
         { camelize("scenario"), scenario }
     };
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/scenario.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/scenario.cpp
index 52057593..14f3b922 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/scenario.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/scenario.cpp
@@ -11,14 +11,14 @@ scenario::to_string() const
     std::ostringstream oss;
 
     oss
-    << "location=" << location
-    << ", tags=" << tags
-    << ", keyword=" << keyword
-    << ", name=" << name
-    << ", description=" << description
-    << ", steps=" << steps
-    << ", examples=" << examples
-    << ", id=" << id
+        << "location=" << location
+        << ", tags=" << tags
+        << ", keyword=" << keyword
+        << ", name=" << name
+        << ", description=" << description
+        << ", steps=" << steps
+        << ", examples=" << examples
+        << ", id=" << id
         ;
 
     return oss.str();
@@ -27,7 +27,7 @@ scenario::to_string() const
 void
 scenario::to_json(json& j) const
 {
-    j[camelize("scenario")] = json{
+    j = json{
         { camelize("location"), location },
         { camelize("tags"), tags },
         { camelize("keyword"), keyword },
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/source.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/source.cpp
index 1a32549c..db31b5ac 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/source.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/source.cpp
@@ -11,9 +11,9 @@ source::to_string() const
     std::ostringstream oss;
 
     oss
-    << "uri=" << uri
-    << ", data=" << data
-    << ", media_type=" << media_type
+        << "uri=" << uri
+        << ", data=" << data
+        << ", media_type=" << media_type
         ;
 
     return oss.str();
@@ -22,7 +22,7 @@ source::to_string() const
 void
 source::to_json(json& j) const
 {
-    j[camelize("source")] = json{
+    j = json{
         { camelize("uri"), uri },
         { camelize("data"), data },
         { camelize("media_type"), media_type }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/source_reference.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/source_reference.cpp
index ef967967..c8949149 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/source_reference.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/source_reference.cpp
@@ -11,10 +11,10 @@ source_reference::to_string() const
     std::ostringstream oss;
 
     oss
-    << "uri=" << uri
-    << ", java_method=" << java_method
-    << ", java_stack_trace_element=" << java_stack_trace_element
-    << ", location=" << location
+        << "uri=" << uri
+        << ", java_method=" << java_method
+        << ", java_stack_trace_element=" << java_stack_trace_element
+        << ", location=" << location
         ;
 
     return oss.str();
@@ -23,7 +23,7 @@ source_reference::to_string() const
 void
 source_reference::to_json(json& j) const
 {
-    j[camelize("source_reference")] = json{
+    j = json{
         { camelize("uri"), uri },
         { camelize("java_method"), java_method },
         { camelize("java_stack_trace_element"), java_stack_trace_element },
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/step.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/step.cpp
index 7dd96f29..196b585b 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/step.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/step.cpp
@@ -11,13 +11,13 @@ step::to_string() const
     std::ostringstream oss;
 
     oss
-    << "location=" << location
-    << ", keyword=" << keyword
-    << ", keyword_type=" << keyword_type
-    << ", text=" << text
-    << ", doc_string=" << doc_string
-    << ", data_table=" << data_table
-    << ", id=" << id
+        << "location=" << location
+        << ", keyword=" << keyword
+        << ", keyword_type=" << keyword_type
+        << ", text=" << text
+        << ", doc_string=" << doc_string
+        << ", data_table=" << data_table
+        << ", id=" << id
         ;
 
     return oss.str();
@@ -26,7 +26,7 @@ step::to_string() const
 void
 step::to_json(json& j) const
 {
-    j[camelize("step")] = json{
+    j = json{
         { camelize("location"), location },
         { camelize("keyword"), keyword },
         { camelize("keyword_type"), keyword_type },
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/step_definition.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/step_definition.cpp
index 41a74cb4..20f45cd2 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/step_definition.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/step_definition.cpp
@@ -11,9 +11,9 @@ step_definition::to_string() const
     std::ostringstream oss;
 
     oss
-    << "id=" << id
-    << ", pattern=" << pattern
-    << ", source_reference=" << source_reference
+        << "id=" << id
+        << ", pattern=" << pattern
+        << ", source_reference=" << source_reference
         ;
 
     return oss.str();
@@ -22,7 +22,7 @@ step_definition::to_string() const
 void
 step_definition::to_json(json& j) const
 {
-    j[camelize("step_definition")] = json{
+    j = json{
         { camelize("id"), id },
         { camelize("pattern"), pattern },
         { camelize("source_reference"), source_reference }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/step_definition_pattern.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/step_definition_pattern.cpp
index bb5b07ae..ca0fec25 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/step_definition_pattern.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/step_definition_pattern.cpp
@@ -11,8 +11,8 @@ step_definition_pattern::to_string() const
     std::ostringstream oss;
 
     oss
-    << "source=" << source
-    << ", type=" << type
+        << "source=" << source
+        << ", type=" << type
         ;
 
     return oss.str();
@@ -21,7 +21,7 @@ step_definition_pattern::to_string() const
 void
 step_definition_pattern::to_json(json& j) const
 {
-    j[camelize("step_definition_pattern")] = json{
+    j = json{
         { camelize("source"), source },
         { camelize("type"), type }
     };
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/step_match_argument.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/step_match_argument.cpp
index 5f8992a5..180b0ce3 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/step_match_argument.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/step_match_argument.cpp
@@ -11,8 +11,8 @@ step_match_argument::to_string() const
     std::ostringstream oss;
 
     oss
-    << "group=" << group
-    << ", parameter_type_name=" << parameter_type_name
+        << "group=" << group
+        << ", parameter_type_name=" << parameter_type_name
         ;
 
     return oss.str();
@@ -21,7 +21,7 @@ step_match_argument::to_string() const
 void
 step_match_argument::to_json(json& j) const
 {
-    j[camelize("step_match_argument")] = json{
+    j = json{
         { camelize("group"), group },
         { camelize("parameter_type_name"), parameter_type_name }
     };
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/step_match_arguments_list.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/step_match_arguments_list.cpp
index ff68ee33..95bff05f 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/step_match_arguments_list.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/step_match_arguments_list.cpp
@@ -11,7 +11,7 @@ step_match_arguments_list::to_string() const
     std::ostringstream oss;
 
     oss
-    << "step_match_arguments=" << step_match_arguments
+        << "step_match_arguments=" << step_match_arguments
         ;
 
     return oss.str();
@@ -20,7 +20,7 @@ step_match_arguments_list::to_string() const
 void
 step_match_arguments_list::to_json(json& j) const
 {
-    j[camelize("step_match_arguments_list")] = json{
+    j = json{
         { camelize("step_match_arguments"), step_match_arguments }
     };
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/table_cell.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/table_cell.cpp
index 3a452085..7d268ad1 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/table_cell.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/table_cell.cpp
@@ -11,8 +11,8 @@ table_cell::to_string() const
     std::ostringstream oss;
 
     oss
-    << "location=" << location
-    << ", value=" << value
+        << "location=" << location
+        << ", value=" << value
         ;
 
     return oss.str();
@@ -21,7 +21,7 @@ table_cell::to_string() const
 void
 table_cell::to_json(json& j) const
 {
-    j[camelize("table_cell")] = json{
+    j = json{
         { camelize("location"), location },
         { camelize("value"), value }
     };
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/table_row.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/table_row.cpp
index 205bf4cd..bad9485f 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/table_row.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/table_row.cpp
@@ -11,9 +11,9 @@ table_row::to_string() const
     std::ostringstream oss;
 
     oss
-    << "location=" << location
-    << ", cells=" << cells
-    << ", id=" << id
+        << "location=" << location
+        << ", cells=" << cells
+        << ", id=" << id
         ;
 
     return oss.str();
@@ -22,7 +22,7 @@ table_row::to_string() const
 void
 table_row::to_json(json& j) const
 {
-    j[camelize("table_row")] = json{
+    j = json{
         { camelize("location"), location },
         { camelize("cells"), cells },
         { camelize("id"), id }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/tag.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/tag.cpp
index 28650508..2dbf092e 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/tag.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/tag.cpp
@@ -11,9 +11,9 @@ tag::to_string() const
     std::ostringstream oss;
 
     oss
-    << "location=" << location
-    << ", name=" << name
-    << ", id=" << id
+        << "location=" << location
+        << ", name=" << name
+        << ", id=" << id
         ;
 
     return oss.str();
@@ -22,7 +22,7 @@ tag::to_string() const
 void
 tag::to_json(json& j) const
 {
-    j[camelize("tag")] = json{
+    j = json{
         { camelize("location"), location },
         { camelize("name"), name },
         { camelize("id"), id }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/test_case.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/test_case.cpp
index 1b42b7b0..06873d33 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/test_case.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/test_case.cpp
@@ -11,9 +11,9 @@ test_case::to_string() const
     std::ostringstream oss;
 
     oss
-    << "id=" << id
-    << ", pickle_id=" << pickle_id
-    << ", test_steps=" << test_steps
+        << "id=" << id
+        << ", pickle_id=" << pickle_id
+        << ", test_steps=" << test_steps
         ;
 
     return oss.str();
@@ -22,7 +22,7 @@ test_case::to_string() const
 void
 test_case::to_json(json& j) const
 {
-    j[camelize("test_case")] = json{
+    j = json{
         { camelize("id"), id },
         { camelize("pickle_id"), pickle_id },
         { camelize("test_steps"), test_steps }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/test_case_finished.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/test_case_finished.cpp
index 1ee91433..14c2f05e 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/test_case_finished.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/test_case_finished.cpp
@@ -11,9 +11,9 @@ test_case_finished::to_string() const
     std::ostringstream oss;
 
     oss
-    << "test_case_started_id=" << test_case_started_id
-    << ", timestamp=" << timestamp
-    << ", will_be_retried=" << will_be_retried
+        << "test_case_started_id=" << test_case_started_id
+        << ", timestamp=" << timestamp
+        << ", will_be_retried=" << will_be_retried
         ;
 
     return oss.str();
@@ -22,7 +22,7 @@ test_case_finished::to_string() const
 void
 test_case_finished::to_json(json& j) const
 {
-    j[camelize("test_case_finished")] = json{
+    j = json{
         { camelize("test_case_started_id"), test_case_started_id },
         { camelize("timestamp"), timestamp },
         { camelize("will_be_retried"), will_be_retried }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/test_case_started.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/test_case_started.cpp
index ce107961..600da8e6 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/test_case_started.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/test_case_started.cpp
@@ -11,11 +11,11 @@ test_case_started::to_string() const
     std::ostringstream oss;
 
     oss
-    << "attempt=" << attempt
-    << ", id=" << id
-    << ", test_case_id=" << test_case_id
-    << ", worker_id=" << worker_id
-    << ", timestamp=" << timestamp
+        << "attempt=" << attempt
+        << ", id=" << id
+        << ", test_case_id=" << test_case_id
+        << ", worker_id=" << worker_id
+        << ", timestamp=" << timestamp
         ;
 
     return oss.str();
@@ -24,7 +24,7 @@ test_case_started::to_string() const
 void
 test_case_started::to_json(json& j) const
 {
-    j[camelize("test_case_started")] = json{
+    j = json{
         { camelize("attempt"), attempt },
         { camelize("id"), id },
         { camelize("test_case_id"), test_case_id },
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/test_run_finished.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/test_run_finished.cpp
index 6a17bf37..9c2f5611 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/test_run_finished.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/test_run_finished.cpp
@@ -11,10 +11,10 @@ test_run_finished::to_string() const
     std::ostringstream oss;
 
     oss
-    << "message=" << message
-    << ", success=" << success
-    << ", timestamp=" << timestamp
-    << ", exception=" << exception
+        << "message=" << message
+        << ", success=" << success
+        << ", timestamp=" << timestamp
+        << ", exception=" << exception
         ;
 
     return oss.str();
@@ -23,7 +23,7 @@ test_run_finished::to_string() const
 void
 test_run_finished::to_json(json& j) const
 {
-    j[camelize("test_run_finished")] = json{
+    j = json{
         { camelize("message"), message },
         { camelize("success"), success },
         { camelize("timestamp"), timestamp },
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/test_run_started.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/test_run_started.cpp
index 38eb18c6..31c097b9 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/test_run_started.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/test_run_started.cpp
@@ -11,7 +11,7 @@ test_run_started::to_string() const
     std::ostringstream oss;
 
     oss
-    << "timestamp=" << timestamp
+        << "timestamp=" << timestamp
         ;
 
     return oss.str();
@@ -20,7 +20,7 @@ test_run_started::to_string() const
 void
 test_run_started::to_json(json& j) const
 {
-    j[camelize("test_run_started")] = json{
+    j = json{
         { camelize("timestamp"), timestamp }
     };
 }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/test_step.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/test_step.cpp
index 0da50845..766aed63 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/test_step.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/test_step.cpp
@@ -11,11 +11,11 @@ test_step::to_string() const
     std::ostringstream oss;
 
     oss
-    << "hook_id=" << hook_id
-    << ", id=" << id
-    << ", pickle_step_id=" << pickle_step_id
-    << ", step_definition_ids=" << step_definition_ids
-    << ", step_match_arguments_lists=" << step_match_arguments_lists
+        << "hook_id=" << hook_id
+        << ", id=" << id
+        << ", pickle_step_id=" << pickle_step_id
+        << ", step_definition_ids=" << step_definition_ids
+        << ", step_match_arguments_lists=" << step_match_arguments_lists
         ;
 
     return oss.str();
@@ -24,7 +24,7 @@ test_step::to_string() const
 void
 test_step::to_json(json& j) const
 {
-    j[camelize("test_step")] = json{
+    j = json{
         { camelize("hook_id"), hook_id },
         { camelize("id"), id },
         { camelize("pickle_step_id"), pickle_step_id },
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/test_step_finished.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/test_step_finished.cpp
index 3df00cf1..696fc48f 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/test_step_finished.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/test_step_finished.cpp
@@ -11,10 +11,10 @@ test_step_finished::to_string() const
     std::ostringstream oss;
 
     oss
-    << "test_case_started_id=" << test_case_started_id
-    << ", test_step_id=" << test_step_id
-    << ", test_step_result=" << test_step_result
-    << ", timestamp=" << timestamp
+        << "test_case_started_id=" << test_case_started_id
+        << ", test_step_id=" << test_step_id
+        << ", test_step_result=" << test_step_result
+        << ", timestamp=" << timestamp
         ;
 
     return oss.str();
@@ -23,7 +23,7 @@ test_step_finished::to_string() const
 void
 test_step_finished::to_json(json& j) const
 {
-    j[camelize("test_step_finished")] = json{
+    j = json{
         { camelize("test_case_started_id"), test_case_started_id },
         { camelize("test_step_id"), test_step_id },
         { camelize("test_step_result"), test_step_result },
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/test_step_result.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/test_step_result.cpp
index 39e62791..2e372e5a 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/test_step_result.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/test_step_result.cpp
@@ -11,10 +11,10 @@ test_step_result::to_string() const
     std::ostringstream oss;
 
     oss
-    << "duration=" << duration
-    << ", message=" << message
-    << ", status=" << status
-    << ", exception=" << exception
+        << "duration=" << duration
+        << ", message=" << message
+        << ", status=" << status
+        << ", exception=" << exception
         ;
 
     return oss.str();
@@ -23,7 +23,7 @@ test_step_result::to_string() const
 void
 test_step_result::to_json(json& j) const
 {
-    j[camelize("test_step_result")] = json{
+    j = json{
         { camelize("duration"), duration },
         { camelize("message"), message },
         { camelize("status"), status },
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/test_step_started.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/test_step_started.cpp
index 60310f12..8001e2ea 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/test_step_started.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/test_step_started.cpp
@@ -11,9 +11,9 @@ test_step_started::to_string() const
     std::ostringstream oss;
 
     oss
-    << "test_case_started_id=" << test_case_started_id
-    << ", test_step_id=" << test_step_id
-    << ", timestamp=" << timestamp
+        << "test_case_started_id=" << test_case_started_id
+        << ", test_step_id=" << test_step_id
+        << ", timestamp=" << timestamp
         ;
 
     return oss.str();
@@ -22,7 +22,7 @@ test_step_started::to_string() const
 void
 test_step_started::to_json(json& j) const
 {
-    j[camelize("test_step_started")] = json{
+    j = json{
         { camelize("test_case_started_id"), test_case_started_id },
         { camelize("test_step_id"), test_step_id },
         { camelize("timestamp"), timestamp }
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/timestamp.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/timestamp.cpp
index 3b9669da..be20edd5 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/timestamp.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/timestamp.cpp
@@ -11,8 +11,8 @@ timestamp::to_string() const
     std::ostringstream oss;
 
     oss
-    << "seconds=" << seconds
-    << ", nanos=" << nanos
+        << "seconds=" << seconds
+        << ", nanos=" << nanos
         ;
 
     return oss.str();
@@ -21,7 +21,7 @@ timestamp::to_string() const
 void
 timestamp::to_json(json& j) const
 {
-    j[camelize("timestamp")] = json{
+    j = json{
         { camelize("seconds"), seconds },
         { camelize("nanos"), nanos }
     };
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/undefined_parameter_type.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/undefined_parameter_type.cpp
index 2c20864f..73d2a712 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/undefined_parameter_type.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/undefined_parameter_type.cpp
@@ -11,8 +11,8 @@ undefined_parameter_type::to_string() const
     std::ostringstream oss;
 
     oss
-    << "expression=" << expression
-    << ", name=" << name
+        << "expression=" << expression
+        << ", name=" << name
         ;
 
     return oss.str();
@@ -21,7 +21,7 @@ undefined_parameter_type::to_string() const
 void
 undefined_parameter_type::to_json(json& j) const
 {
-    j[camelize("undefined_parameter_type")] = json{
+    j = json{
         { camelize("expression"), expression },
         { camelize("name"), name }
     };
diff --git a/jsonschema/scripts/templates/cpp.hpp.erb b/jsonschema/scripts/templates/cpp.hpp.erb
index 35ec2b85..34c6a17d 100644
--- a/jsonschema/scripts/templates/cpp.hpp.erb
+++ b/jsonschema/scripts/templates/cpp.hpp.erb
@@ -86,7 +86,7 @@ std::string
     oss
     <%- schema['properties'].each_with_index do |(property_name, property), index| -%>
     <%- type = underscore(type_for(class_name(key), property_name, property)) -%>
-    << "<%= index == 0 ? '' : ', '%><%= underscore(property_name) %>=" << <%= underscore(property_name) %>
+        << "<%= index == 0 ? '' : ', '%><%= underscore(property_name) %>=" << <%= underscore(property_name) %>
     <%- end -%>
         ;
 
@@ -107,7 +107,7 @@ void
         exprs.append(expr)
     end
     -%>
-    j[camelize("<%= myclass %>")] = json{
+    j = json{
         <%= exprs.join(",\n        ") %>
     };
 }

From bc55b15432c919ad7a25663e8ea0bad3aaa25c15 Mon Sep 17 00:00:00 2001
From: Remy Chibois <remy@chybz.net>
Date: Fri, 12 May 2023 17:58:07 +0200
Subject: [PATCH 15/26] chore: made non required properties optional

---
 cpp/include/cucumber/messages/attachment.hpp  | 10 +-
 cpp/include/cucumber/messages/ci.hpp          |  6 +-
 cpp/include/cucumber/messages/doc_string.hpp  |  2 +-
 cpp/include/cucumber/messages/envelope.hpp    | 34 +++----
 cpp/include/cucumber/messages/examples.hpp    |  2 +-
 cpp/include/cucumber/messages/exception.hpp   |  2 +-
 .../cucumber/messages/feature_child.hpp       |  6 +-
 .../cucumber/messages/gherkin_document.hpp    |  4 +-
 cpp/include/cucumber/messages/git.hpp         |  4 +-
 cpp/include/cucumber/messages/group.hpp       |  4 +-
 cpp/include/cucumber/messages/hook.hpp        |  4 +-
 cpp/include/cucumber/messages/location.hpp    |  2 +-
 cpp/include/cucumber/messages/meta.hpp        |  2 +-
 .../cucumber/messages/parameter_type.hpp      |  2 +-
 .../cucumber/messages/pickle_doc_string.hpp   |  2 +-
 cpp/include/cucumber/messages/pickle_step.hpp |  4 +-
 .../messages/pickle_step_argument.hpp         |  4 +-
 cpp/include/cucumber/messages/product.hpp     |  2 +-
 cpp/include/cucumber/messages/rule_child.hpp  |  4 +-
 .../cucumber/messages/source_reference.hpp    |  8 +-
 cpp/include/cucumber/messages/step.hpp        |  6 +-
 .../cucumber/messages/step_match_argument.hpp |  2 +-
 .../cucumber/messages/test_case_started.hpp   |  2 +-
 .../cucumber/messages/test_run_finished.hpp   |  4 +-
 cpp/include/cucumber/messages/test_step.hpp   |  8 +-
 .../cucumber/messages/test_step_result.hpp    |  4 +-
 .../cucumber/messages/attachment.cpp          | 36 ++++---
 .../cucumber/messages/background.cpp          | 28 +++---
 .../cucumber/messages/ci.cpp                  | 20 ++--
 .../cucumber/messages/comment.cpp             | 12 +--
 .../cucumber/messages/data_table.cpp          | 12 +--
 .../cucumber/messages/doc_string.cpp          | 20 ++--
 .../cucumber/messages/duration.cpp            | 12 +--
 .../cucumber/messages/envelope.cpp            | 72 +++++++-------
 .../cucumber/messages/examples.cpp            | 36 ++++---
 .../cucumber/messages/exception.cpp           | 12 +--
 .../cucumber/messages/feature.cpp             | 32 +++----
 .../cucumber/messages/feature_child.cpp       | 16 ++--
 .../cucumber/messages/gherkin_document.cpp    | 16 ++--
 .../cucumber/messages/git.cpp                 | 20 ++--
 .../cucumber/messages/group.cpp               | 16 ++--
 .../cucumber/messages/hook.cpp                | 20 ++--
 .../cucumber/messages/java_method.cpp         | 16 ++--
 .../messages/java_stack_trace_element.cpp     | 16 ++--
 .../cucumber/messages/location.cpp            | 12 +--
 .../cucumber/messages/meta.cpp                | 28 +++---
 .../cucumber/messages/parameter_type.cpp      | 28 +++---
 .../cucumber/messages/parse_error.cpp         | 12 +--
 .../cucumber/messages/pickle.cpp              | 32 +++----
 .../cucumber/messages/pickle_doc_string.cpp   | 12 +--
 .../cucumber/messages/pickle_step.cpp         | 24 ++---
 .../messages/pickle_step_argument.cpp         | 12 +--
 .../cucumber/messages/pickle_table.cpp        |  8 +-
 .../cucumber/messages/pickle_table_cell.cpp   |  8 +-
 .../cucumber/messages/pickle_table_row.cpp    |  8 +-
 .../cucumber/messages/pickle_tag.cpp          | 12 +--
 .../cucumber/messages/product.cpp             | 12 +--
 .../cucumber/messages/rule.cpp                | 32 +++----
 .../cucumber/messages/rule_child.cpp          | 12 +--
 .../cucumber/messages/scenario.cpp            | 36 ++++---
 .../cucumber/messages/source.cpp              | 16 ++--
 .../cucumber/messages/source_reference.cpp    | 20 ++--
 .../cucumber/messages/step.cpp                | 32 +++----
 .../cucumber/messages/step_definition.cpp     | 16 ++--
 .../messages/step_definition_pattern.cpp      | 12 +--
 .../cucumber/messages/step_match_argument.cpp | 12 +--
 .../messages/step_match_arguments_list.cpp    |  8 +-
 .../cucumber/messages/table_cell.cpp          | 12 +--
 .../cucumber/messages/table_row.cpp           | 16 ++--
 .../cucumber/messages/tag.cpp                 | 16 ++--
 .../cucumber/messages/test_case.cpp           | 16 ++--
 .../cucumber/messages/test_case_finished.cpp  | 16 ++--
 .../cucumber/messages/test_case_started.cpp   | 24 ++---
 .../cucumber/messages/test_run_finished.cpp   | 20 ++--
 .../cucumber/messages/test_run_started.cpp    |  8 +-
 .../cucumber/messages/test_step.cpp           | 24 ++---
 .../cucumber/messages/test_step_finished.cpp  | 20 ++--
 .../cucumber/messages/test_step_result.cpp    | 20 ++--
 .../cucumber/messages/test_step_started.cpp   | 16 ++--
 .../cucumber/messages/timestamp.cpp           | 12 +--
 .../messages/undefined_parameter_type.cpp     | 12 +--
 .../cucumber/messages/utils.hpp               | 93 +++++++++++++++++--
 jsonschema/scripts/templates/cpp.hpp.erb      | 59 ++++++------
 83 files changed, 595 insertions(+), 739 deletions(-)

diff --git a/cpp/include/cucumber/messages/attachment.hpp b/cpp/include/cucumber/messages/attachment.hpp
index 8c12df3f..25fcef3f 100644
--- a/cpp/include/cucumber/messages/attachment.hpp
+++ b/cpp/include/cucumber/messages/attachment.hpp
@@ -34,12 +34,12 @@ struct attachment
 {
     std::string body;
     cucumber::messages::attachment_content_encoding content_encoding;
-    std::string file_name;
+    std::optional<std::string> file_name;
     std::string media_type;
-    cucumber::messages::source source;
-    std::string test_case_started_id;
-    std::string test_step_id;
-    std::string url;
+    std::optional<cucumber::messages::source> source;
+    std::optional<std::string> test_case_started_id;
+    std::optional<std::string> test_step_id;
+    std::optional<std::string> url;
 
     std::string to_string() const;
 
diff --git a/cpp/include/cucumber/messages/ci.hpp b/cpp/include/cucumber/messages/ci.hpp
index 44e574a0..05f59324 100644
--- a/cpp/include/cucumber/messages/ci.hpp
+++ b/cpp/include/cucumber/messages/ci.hpp
@@ -22,9 +22,9 @@ using json = nlohmann::json;
 struct ci
 {
     std::string name;
-    std::string url;
-    std::string build_number;
-    cucumber::messages::git git;
+    std::optional<std::string> url;
+    std::optional<std::string> build_number;
+    std::optional<cucumber::messages::git> git;
 
     std::string to_string() const;
 
diff --git a/cpp/include/cucumber/messages/doc_string.hpp b/cpp/include/cucumber/messages/doc_string.hpp
index 2d3f8959..bd29a765 100644
--- a/cpp/include/cucumber/messages/doc_string.hpp
+++ b/cpp/include/cucumber/messages/doc_string.hpp
@@ -20,7 +20,7 @@ using json = nlohmann::json;
 struct doc_string
 {
     cucumber::messages::location location;
-    std::string media_type;
+    std::optional<std::string> media_type;
     std::string content;
     std::string delimiter;
 
diff --git a/cpp/include/cucumber/messages/envelope.hpp b/cpp/include/cucumber/messages/envelope.hpp
index bc371e38..4fc8e258 100644
--- a/cpp/include/cucumber/messages/envelope.hpp
+++ b/cpp/include/cucumber/messages/envelope.hpp
@@ -42,23 +42,23 @@ using json = nlohmann::json;
 
 struct envelope
 {
-    cucumber::messages::attachment attachment;
-    cucumber::messages::gherkin_document gherkin_document;
-    cucumber::messages::hook hook;
-    cucumber::messages::meta meta;
-    cucumber::messages::parameter_type parameter_type;
-    cucumber::messages::parse_error parse_error;
-    cucumber::messages::pickle pickle;
-    cucumber::messages::source source;
-    cucumber::messages::step_definition step_definition;
-    cucumber::messages::test_case test_case;
-    cucumber::messages::test_case_finished test_case_finished;
-    cucumber::messages::test_case_started test_case_started;
-    cucumber::messages::test_run_finished test_run_finished;
-    cucumber::messages::test_run_started test_run_started;
-    cucumber::messages::test_step_finished test_step_finished;
-    cucumber::messages::test_step_started test_step_started;
-    cucumber::messages::undefined_parameter_type undefined_parameter_type;
+    std::optional<cucumber::messages::attachment> attachment;
+    std::optional<cucumber::messages::gherkin_document> gherkin_document;
+    std::optional<cucumber::messages::hook> hook;
+    std::optional<cucumber::messages::meta> meta;
+    std::optional<cucumber::messages::parameter_type> parameter_type;
+    std::optional<cucumber::messages::parse_error> parse_error;
+    std::optional<cucumber::messages::pickle> pickle;
+    std::optional<cucumber::messages::source> source;
+    std::optional<cucumber::messages::step_definition> step_definition;
+    std::optional<cucumber::messages::test_case> test_case;
+    std::optional<cucumber::messages::test_case_finished> test_case_finished;
+    std::optional<cucumber::messages::test_case_started> test_case_started;
+    std::optional<cucumber::messages::test_run_finished> test_run_finished;
+    std::optional<cucumber::messages::test_run_started> test_run_started;
+    std::optional<cucumber::messages::test_step_finished> test_step_finished;
+    std::optional<cucumber::messages::test_step_started> test_step_started;
+    std::optional<cucumber::messages::undefined_parameter_type> undefined_parameter_type;
 
     std::string to_string() const;
 
diff --git a/cpp/include/cucumber/messages/examples.hpp b/cpp/include/cucumber/messages/examples.hpp
index 47d30200..bc23086a 100644
--- a/cpp/include/cucumber/messages/examples.hpp
+++ b/cpp/include/cucumber/messages/examples.hpp
@@ -27,7 +27,7 @@ struct examples
     std::string keyword;
     std::string name;
     std::string description;
-    cucumber::messages::table_row table_header;
+    std::optional<cucumber::messages::table_row> table_header;
     std::vector<cucumber::messages::table_row> table_body;
     std::string id;
 
diff --git a/cpp/include/cucumber/messages/exception.hpp b/cpp/include/cucumber/messages/exception.hpp
index dee088f3..c7712676 100644
--- a/cpp/include/cucumber/messages/exception.hpp
+++ b/cpp/include/cucumber/messages/exception.hpp
@@ -20,7 +20,7 @@ using json = nlohmann::json;
 struct exception
 {
     std::string type;
-    std::string message;
+    std::optional<std::string> message;
 
     std::string to_string() const;
 
diff --git a/cpp/include/cucumber/messages/feature_child.hpp b/cpp/include/cucumber/messages/feature_child.hpp
index 9be9a76f..6dace2f3 100644
--- a/cpp/include/cucumber/messages/feature_child.hpp
+++ b/cpp/include/cucumber/messages/feature_child.hpp
@@ -23,9 +23,9 @@ using json = nlohmann::json;
 
 struct feature_child
 {
-    cucumber::messages::rule rule;
-    cucumber::messages::background background;
-    cucumber::messages::scenario scenario;
+    std::optional<cucumber::messages::rule> rule;
+    std::optional<cucumber::messages::background> background;
+    std::optional<cucumber::messages::scenario> scenario;
 
     std::string to_string() const;
 
diff --git a/cpp/include/cucumber/messages/gherkin_document.hpp b/cpp/include/cucumber/messages/gherkin_document.hpp
index 2bcaf90a..9dd49305 100644
--- a/cpp/include/cucumber/messages/gherkin_document.hpp
+++ b/cpp/include/cucumber/messages/gherkin_document.hpp
@@ -27,8 +27,8 @@ using json = nlohmann::json;
 
 struct gherkin_document
 {
-    std::string uri;
-    cucumber::messages::feature feature;
+    std::optional<std::string> uri;
+    std::optional<cucumber::messages::feature> feature;
     std::vector<cucumber::messages::comment> comments;
 
     std::string to_string() const;
diff --git a/cpp/include/cucumber/messages/git.hpp b/cpp/include/cucumber/messages/git.hpp
index d4d2abd4..751b2795 100644
--- a/cpp/include/cucumber/messages/git.hpp
+++ b/cpp/include/cucumber/messages/git.hpp
@@ -22,8 +22,8 @@ struct git
 {
     std::string remote;
     std::string revision;
-    std::string branch;
-    std::string tag;
+    std::optional<std::string> branch;
+    std::optional<std::string> tag;
 
     std::string to_string() const;
 
diff --git a/cpp/include/cucumber/messages/group.hpp b/cpp/include/cucumber/messages/group.hpp
index ab85c088..a1af3681 100644
--- a/cpp/include/cucumber/messages/group.hpp
+++ b/cpp/include/cucumber/messages/group.hpp
@@ -20,8 +20,8 @@ using json = nlohmann::json;
 struct group
 {
     std::vector<cucumber::messages::group> children;
-    std::size_t start;
-    std::string value;
+    std::optional<std::size_t> start;
+    std::optional<std::string> value;
 
     std::string to_string() const;
 
diff --git a/cpp/include/cucumber/messages/hook.hpp b/cpp/include/cucumber/messages/hook.hpp
index 967544f3..ee645659 100644
--- a/cpp/include/cucumber/messages/hook.hpp
+++ b/cpp/include/cucumber/messages/hook.hpp
@@ -20,9 +20,9 @@ using json = nlohmann::json;
 struct hook
 {
     std::string id;
-    std::string name;
+    std::optional<std::string> name;
     cucumber::messages::source_reference source_reference;
-    std::string tag_expression;
+    std::optional<std::string> tag_expression;
 
     std::string to_string() const;
 
diff --git a/cpp/include/cucumber/messages/location.hpp b/cpp/include/cucumber/messages/location.hpp
index 6d01167b..f09a54e2 100644
--- a/cpp/include/cucumber/messages/location.hpp
+++ b/cpp/include/cucumber/messages/location.hpp
@@ -20,7 +20,7 @@ using json = nlohmann::json;
 struct location
 {
     std::size_t line;
-    std::size_t column;
+    std::optional<std::size_t> column;
 
     std::string to_string() const;
 
diff --git a/cpp/include/cucumber/messages/meta.hpp b/cpp/include/cucumber/messages/meta.hpp
index c5eab095..77ec0b3a 100644
--- a/cpp/include/cucumber/messages/meta.hpp
+++ b/cpp/include/cucumber/messages/meta.hpp
@@ -31,7 +31,7 @@ struct meta
     cucumber::messages::product runtime;
     cucumber::messages::product os;
     cucumber::messages::product cpu;
-    cucumber::messages::ci ci;
+    std::optional<cucumber::messages::ci> ci;
 
     std::string to_string() const;
 
diff --git a/cpp/include/cucumber/messages/parameter_type.hpp b/cpp/include/cucumber/messages/parameter_type.hpp
index 4c692fff..1f084db7 100644
--- a/cpp/include/cucumber/messages/parameter_type.hpp
+++ b/cpp/include/cucumber/messages/parameter_type.hpp
@@ -24,7 +24,7 @@ struct parameter_type
     bool prefer_for_regular_expression_match;
     bool use_for_snippets;
     std::string id;
-    cucumber::messages::source_reference source_reference;
+    std::optional<cucumber::messages::source_reference> source_reference;
 
     std::string to_string() const;
 
diff --git a/cpp/include/cucumber/messages/pickle_doc_string.hpp b/cpp/include/cucumber/messages/pickle_doc_string.hpp
index d9d9463b..6171bb95 100644
--- a/cpp/include/cucumber/messages/pickle_doc_string.hpp
+++ b/cpp/include/cucumber/messages/pickle_doc_string.hpp
@@ -17,7 +17,7 @@ using json = nlohmann::json;
 
 struct pickle_doc_string
 {
-    std::string media_type;
+    std::optional<std::string> media_type;
     std::string content;
 
     std::string to_string() const;
diff --git a/cpp/include/cucumber/messages/pickle_step.hpp b/cpp/include/cucumber/messages/pickle_step.hpp
index 0a10b196..dbf8ddcd 100644
--- a/cpp/include/cucumber/messages/pickle_step.hpp
+++ b/cpp/include/cucumber/messages/pickle_step.hpp
@@ -22,10 +22,10 @@ using json = nlohmann::json;
 
 struct pickle_step
 {
-    cucumber::messages::pickle_step_argument argument;
+    std::optional<cucumber::messages::pickle_step_argument> argument;
     std::vector<std::string> ast_node_ids;
     std::string id;
-    cucumber::messages::pickle_step_type type;
+    std::optional<cucumber::messages::pickle_step_type> type;
     std::string text;
 
     std::string to_string() const;
diff --git a/cpp/include/cucumber/messages/pickle_step_argument.hpp b/cpp/include/cucumber/messages/pickle_step_argument.hpp
index 1f0c14c9..d701c01d 100644
--- a/cpp/include/cucumber/messages/pickle_step_argument.hpp
+++ b/cpp/include/cucumber/messages/pickle_step_argument.hpp
@@ -22,8 +22,8 @@ using json = nlohmann::json;
 
 struct pickle_step_argument
 {
-    cucumber::messages::pickle_doc_string doc_string;
-    cucumber::messages::pickle_table data_table;
+    std::optional<cucumber::messages::pickle_doc_string> doc_string;
+    std::optional<cucumber::messages::pickle_table> data_table;
 
     std::string to_string() const;
 
diff --git a/cpp/include/cucumber/messages/product.hpp b/cpp/include/cucumber/messages/product.hpp
index 4a16e3e7..130fbf0b 100644
--- a/cpp/include/cucumber/messages/product.hpp
+++ b/cpp/include/cucumber/messages/product.hpp
@@ -20,7 +20,7 @@ using json = nlohmann::json;
 struct product
 {
     std::string name;
-    std::string version;
+    std::optional<std::string> version;
 
     std::string to_string() const;
 
diff --git a/cpp/include/cucumber/messages/rule_child.hpp b/cpp/include/cucumber/messages/rule_child.hpp
index a1e57198..82407a67 100644
--- a/cpp/include/cucumber/messages/rule_child.hpp
+++ b/cpp/include/cucumber/messages/rule_child.hpp
@@ -22,8 +22,8 @@ using json = nlohmann::json;
 
 struct rule_child
 {
-    cucumber::messages::background background;
-    cucumber::messages::scenario scenario;
+    std::optional<cucumber::messages::background> background;
+    std::optional<cucumber::messages::scenario> scenario;
 
     std::string to_string() const;
 
diff --git a/cpp/include/cucumber/messages/source_reference.hpp b/cpp/include/cucumber/messages/source_reference.hpp
index 7b9952f5..2d1a5300 100644
--- a/cpp/include/cucumber/messages/source_reference.hpp
+++ b/cpp/include/cucumber/messages/source_reference.hpp
@@ -24,10 +24,10 @@ using json = nlohmann::json;
 
 struct source_reference
 {
-    std::string uri;
-    cucumber::messages::java_method java_method;
-    cucumber::messages::java_stack_trace_element java_stack_trace_element;
-    cucumber::messages::location location;
+    std::optional<std::string> uri;
+    std::optional<cucumber::messages::java_method> java_method;
+    std::optional<cucumber::messages::java_stack_trace_element> java_stack_trace_element;
+    std::optional<cucumber::messages::location> location;
 
     std::string to_string() const;
 
diff --git a/cpp/include/cucumber/messages/step.hpp b/cpp/include/cucumber/messages/step.hpp
index fdcf53f3..e07b3b00 100644
--- a/cpp/include/cucumber/messages/step.hpp
+++ b/cpp/include/cucumber/messages/step.hpp
@@ -26,10 +26,10 @@ struct step
 {
     cucumber::messages::location location;
     std::string keyword;
-    cucumber::messages::step_keyword_type keyword_type;
+    std::optional<cucumber::messages::step_keyword_type> keyword_type;
     std::string text;
-    cucumber::messages::doc_string doc_string;
-    cucumber::messages::data_table data_table;
+    std::optional<cucumber::messages::doc_string> doc_string;
+    std::optional<cucumber::messages::data_table> data_table;
     std::string id;
 
     std::string to_string() const;
diff --git a/cpp/include/cucumber/messages/step_match_argument.hpp b/cpp/include/cucumber/messages/step_match_argument.hpp
index b68df3a9..c6667395 100644
--- a/cpp/include/cucumber/messages/step_match_argument.hpp
+++ b/cpp/include/cucumber/messages/step_match_argument.hpp
@@ -27,7 +27,7 @@ using json = nlohmann::json;
 struct step_match_argument
 {
     cucumber::messages::group group;
-    std::string parameter_type_name;
+    std::optional<std::string> parameter_type_name;
 
     std::string to_string() const;
 
diff --git a/cpp/include/cucumber/messages/test_case_started.hpp b/cpp/include/cucumber/messages/test_case_started.hpp
index 5fdc4d7f..1c4a70aa 100644
--- a/cpp/include/cucumber/messages/test_case_started.hpp
+++ b/cpp/include/cucumber/messages/test_case_started.hpp
@@ -22,7 +22,7 @@ struct test_case_started
     std::size_t attempt;
     std::string id;
     std::string test_case_id;
-    std::string worker_id;
+    std::optional<std::string> worker_id;
     cucumber::messages::timestamp timestamp;
 
     std::string to_string() const;
diff --git a/cpp/include/cucumber/messages/test_run_finished.hpp b/cpp/include/cucumber/messages/test_run_finished.hpp
index df1d01e2..973e4728 100644
--- a/cpp/include/cucumber/messages/test_run_finished.hpp
+++ b/cpp/include/cucumber/messages/test_run_finished.hpp
@@ -20,10 +20,10 @@ using json = nlohmann::json;
 
 struct test_run_finished
 {
-    std::string message;
+    std::optional<std::string> message;
     bool success;
     cucumber::messages::timestamp timestamp;
-    cucumber::messages::exception exception;
+    std::optional<cucumber::messages::exception> exception;
 
     std::string to_string() const;
 
diff --git a/cpp/include/cucumber/messages/test_step.hpp b/cpp/include/cucumber/messages/test_step.hpp
index c6d3bd40..58df22ac 100644
--- a/cpp/include/cucumber/messages/test_step.hpp
+++ b/cpp/include/cucumber/messages/test_step.hpp
@@ -22,11 +22,11 @@ using json = nlohmann::json;
 
 struct test_step
 {
-    std::string hook_id;
+    std::optional<std::string> hook_id;
     std::string id;
-    std::string pickle_step_id;
-    std::vector<std::string> step_definition_ids;
-    std::vector<cucumber::messages::step_match_arguments_list> step_match_arguments_lists;
+    std::optional<std::string> pickle_step_id;
+    std::optional<std::vector<std::string>> step_definition_ids;
+    std::optional<std::vector<cucumber::messages::step_match_arguments_list>> step_match_arguments_lists;
 
     std::string to_string() const;
 
diff --git a/cpp/include/cucumber/messages/test_step_result.hpp b/cpp/include/cucumber/messages/test_step_result.hpp
index 99b838a8..12d70c45 100644
--- a/cpp/include/cucumber/messages/test_step_result.hpp
+++ b/cpp/include/cucumber/messages/test_step_result.hpp
@@ -22,9 +22,9 @@ using json = nlohmann::json;
 struct test_step_result
 {
     cucumber::messages::duration duration;
-    std::string message;
+    std::optional<std::string> message;
     cucumber::messages::test_step_result_status status;
-    cucumber::messages::exception exception;
+    std::optional<cucumber::messages::exception> exception;
 
     std::string to_string() const;
 
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/attachment.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/attachment.cpp
index 94dc9368..d4661e0c 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/attachment.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/attachment.cpp
@@ -10,16 +10,14 @@ attachment::to_string() const
 {
     std::ostringstream oss;
 
-    oss
-        << "body=" << body
-        << ", content_encoding=" << content_encoding
-        << ", file_name=" << file_name
-        << ", media_type=" << media_type
-        << ", source=" << source
-        << ", test_case_started_id=" << test_case_started_id
-        << ", test_step_id=" << test_step_id
-        << ", url=" << url
-        ;
+    cucumber::messages::to_string(oss, "body=", body);
+    cucumber::messages::to_string(oss, ", content_encoding=", content_encoding);
+    cucumber::messages::to_string(oss, ", file_name=", file_name);
+    cucumber::messages::to_string(oss, ", media_type=", media_type);
+    cucumber::messages::to_string(oss, ", source=", source);
+    cucumber::messages::to_string(oss, ", test_case_started_id=", test_case_started_id);
+    cucumber::messages::to_string(oss, ", test_step_id=", test_step_id);
+    cucumber::messages::to_string(oss, ", url=", url);
 
     return oss.str();
 }
@@ -27,16 +25,14 @@ attachment::to_string() const
 void
 attachment::to_json(json& j) const
 {
-    j = json{
-        { camelize("body"), body },
-        { camelize("content_encoding"), content_encoding },
-        { camelize("file_name"), file_name },
-        { camelize("media_type"), media_type },
-        { camelize("source"), source },
-        { camelize("test_case_started_id"), test_case_started_id },
-        { camelize("test_step_id"), test_step_id },
-        { camelize("url"), url }
-    };
+    cucumber::messages::to_json(j, camelize("body"), body);
+    cucumber::messages::to_json(j, camelize("content_encoding"), content_encoding);
+    cucumber::messages::to_json(j, camelize("file_name"), file_name);
+    cucumber::messages::to_json(j, camelize("media_type"), media_type);
+    cucumber::messages::to_json(j, camelize("source"), source);
+    cucumber::messages::to_json(j, camelize("test_case_started_id"), test_case_started_id);
+    cucumber::messages::to_json(j, camelize("test_step_id"), test_step_id);
+    cucumber::messages::to_json(j, camelize("url"), url);
 }
 
 std::string
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/background.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/background.cpp
index 624bb2cb..76184a20 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/background.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/background.cpp
@@ -10,14 +10,12 @@ background::to_string() const
 {
     std::ostringstream oss;
 
-    oss
-        << "location=" << location
-        << ", keyword=" << keyword
-        << ", name=" << name
-        << ", description=" << description
-        << ", steps=" << steps
-        << ", id=" << id
-        ;
+    cucumber::messages::to_string(oss, "location=", location);
+    cucumber::messages::to_string(oss, ", keyword=", keyword);
+    cucumber::messages::to_string(oss, ", name=", name);
+    cucumber::messages::to_string(oss, ", description=", description);
+    cucumber::messages::to_string(oss, ", steps=", steps);
+    cucumber::messages::to_string(oss, ", id=", id);
 
     return oss.str();
 }
@@ -25,14 +23,12 @@ background::to_string() const
 void
 background::to_json(json& j) const
 {
-    j = json{
-        { camelize("location"), location },
-        { camelize("keyword"), keyword },
-        { camelize("name"), name },
-        { camelize("description"), description },
-        { camelize("steps"), steps },
-        { camelize("id"), id }
-    };
+    cucumber::messages::to_json(j, camelize("location"), location);
+    cucumber::messages::to_json(j, camelize("keyword"), keyword);
+    cucumber::messages::to_json(j, camelize("name"), name);
+    cucumber::messages::to_json(j, camelize("description"), description);
+    cucumber::messages::to_json(j, camelize("steps"), steps);
+    cucumber::messages::to_json(j, camelize("id"), id);
 }
 
 std::string
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/ci.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/ci.cpp
index cf5d3243..12ef638a 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/ci.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/ci.cpp
@@ -10,12 +10,10 @@ ci::to_string() const
 {
     std::ostringstream oss;
 
-    oss
-        << "name=" << name
-        << ", url=" << url
-        << ", build_number=" << build_number
-        << ", git=" << git
-        ;
+    cucumber::messages::to_string(oss, "name=", name);
+    cucumber::messages::to_string(oss, ", url=", url);
+    cucumber::messages::to_string(oss, ", build_number=", build_number);
+    cucumber::messages::to_string(oss, ", git=", git);
 
     return oss.str();
 }
@@ -23,12 +21,10 @@ ci::to_string() const
 void
 ci::to_json(json& j) const
 {
-    j = json{
-        { camelize("name"), name },
-        { camelize("url"), url },
-        { camelize("build_number"), build_number },
-        { camelize("git"), git }
-    };
+    cucumber::messages::to_json(j, camelize("name"), name);
+    cucumber::messages::to_json(j, camelize("url"), url);
+    cucumber::messages::to_json(j, camelize("build_number"), build_number);
+    cucumber::messages::to_json(j, camelize("git"), git);
 }
 
 std::string
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/comment.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/comment.cpp
index 31bb9554..74ec901e 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/comment.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/comment.cpp
@@ -10,10 +10,8 @@ comment::to_string() const
 {
     std::ostringstream oss;
 
-    oss
-        << "location=" << location
-        << ", text=" << text
-        ;
+    cucumber::messages::to_string(oss, "location=", location);
+    cucumber::messages::to_string(oss, ", text=", text);
 
     return oss.str();
 }
@@ -21,10 +19,8 @@ comment::to_string() const
 void
 comment::to_json(json& j) const
 {
-    j = json{
-        { camelize("location"), location },
-        { camelize("text"), text }
-    };
+    cucumber::messages::to_json(j, camelize("location"), location);
+    cucumber::messages::to_json(j, camelize("text"), text);
 }
 
 std::string
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/data_table.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/data_table.cpp
index 9913de13..7895d594 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/data_table.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/data_table.cpp
@@ -10,10 +10,8 @@ data_table::to_string() const
 {
     std::ostringstream oss;
 
-    oss
-        << "location=" << location
-        << ", rows=" << rows
-        ;
+    cucumber::messages::to_string(oss, "location=", location);
+    cucumber::messages::to_string(oss, ", rows=", rows);
 
     return oss.str();
 }
@@ -21,10 +19,8 @@ data_table::to_string() const
 void
 data_table::to_json(json& j) const
 {
-    j = json{
-        { camelize("location"), location },
-        { camelize("rows"), rows }
-    };
+    cucumber::messages::to_json(j, camelize("location"), location);
+    cucumber::messages::to_json(j, camelize("rows"), rows);
 }
 
 std::string
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/doc_string.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/doc_string.cpp
index fff7e831..9f27d714 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/doc_string.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/doc_string.cpp
@@ -10,12 +10,10 @@ doc_string::to_string() const
 {
     std::ostringstream oss;
 
-    oss
-        << "location=" << location
-        << ", media_type=" << media_type
-        << ", content=" << content
-        << ", delimiter=" << delimiter
-        ;
+    cucumber::messages::to_string(oss, "location=", location);
+    cucumber::messages::to_string(oss, ", media_type=", media_type);
+    cucumber::messages::to_string(oss, ", content=", content);
+    cucumber::messages::to_string(oss, ", delimiter=", delimiter);
 
     return oss.str();
 }
@@ -23,12 +21,10 @@ doc_string::to_string() const
 void
 doc_string::to_json(json& j) const
 {
-    j = json{
-        { camelize("location"), location },
-        { camelize("media_type"), media_type },
-        { camelize("content"), content },
-        { camelize("delimiter"), delimiter }
-    };
+    cucumber::messages::to_json(j, camelize("location"), location);
+    cucumber::messages::to_json(j, camelize("media_type"), media_type);
+    cucumber::messages::to_json(j, camelize("content"), content);
+    cucumber::messages::to_json(j, camelize("delimiter"), delimiter);
 }
 
 std::string
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/duration.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/duration.cpp
index b02ca03c..1a08f1f0 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/duration.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/duration.cpp
@@ -10,10 +10,8 @@ duration::to_string() const
 {
     std::ostringstream oss;
 
-    oss
-        << "seconds=" << seconds
-        << ", nanos=" << nanos
-        ;
+    cucumber::messages::to_string(oss, "seconds=", seconds);
+    cucumber::messages::to_string(oss, ", nanos=", nanos);
 
     return oss.str();
 }
@@ -21,10 +19,8 @@ duration::to_string() const
 void
 duration::to_json(json& j) const
 {
-    j = json{
-        { camelize("seconds"), seconds },
-        { camelize("nanos"), nanos }
-    };
+    cucumber::messages::to_json(j, camelize("seconds"), seconds);
+    cucumber::messages::to_json(j, camelize("nanos"), nanos);
 }
 
 std::string
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/envelope.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/envelope.cpp
index b8a6272b..88e63702 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/envelope.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/envelope.cpp
@@ -10,25 +10,23 @@ envelope::to_string() const
 {
     std::ostringstream oss;
 
-    oss
-        << "attachment=" << attachment
-        << ", gherkin_document=" << gherkin_document
-        << ", hook=" << hook
-        << ", meta=" << meta
-        << ", parameter_type=" << parameter_type
-        << ", parse_error=" << parse_error
-        << ", pickle=" << pickle
-        << ", source=" << source
-        << ", step_definition=" << step_definition
-        << ", test_case=" << test_case
-        << ", test_case_finished=" << test_case_finished
-        << ", test_case_started=" << test_case_started
-        << ", test_run_finished=" << test_run_finished
-        << ", test_run_started=" << test_run_started
-        << ", test_step_finished=" << test_step_finished
-        << ", test_step_started=" << test_step_started
-        << ", undefined_parameter_type=" << undefined_parameter_type
-        ;
+    cucumber::messages::to_string(oss, "attachment=", attachment);
+    cucumber::messages::to_string(oss, ", gherkin_document=", gherkin_document);
+    cucumber::messages::to_string(oss, ", hook=", hook);
+    cucumber::messages::to_string(oss, ", meta=", meta);
+    cucumber::messages::to_string(oss, ", parameter_type=", parameter_type);
+    cucumber::messages::to_string(oss, ", parse_error=", parse_error);
+    cucumber::messages::to_string(oss, ", pickle=", pickle);
+    cucumber::messages::to_string(oss, ", source=", source);
+    cucumber::messages::to_string(oss, ", step_definition=", step_definition);
+    cucumber::messages::to_string(oss, ", test_case=", test_case);
+    cucumber::messages::to_string(oss, ", test_case_finished=", test_case_finished);
+    cucumber::messages::to_string(oss, ", test_case_started=", test_case_started);
+    cucumber::messages::to_string(oss, ", test_run_finished=", test_run_finished);
+    cucumber::messages::to_string(oss, ", test_run_started=", test_run_started);
+    cucumber::messages::to_string(oss, ", test_step_finished=", test_step_finished);
+    cucumber::messages::to_string(oss, ", test_step_started=", test_step_started);
+    cucumber::messages::to_string(oss, ", undefined_parameter_type=", undefined_parameter_type);
 
     return oss.str();
 }
@@ -36,25 +34,23 @@ envelope::to_string() const
 void
 envelope::to_json(json& j) const
 {
-    j = json{
-        { camelize("attachment"), attachment },
-        { camelize("gherkin_document"), gherkin_document },
-        { camelize("hook"), hook },
-        { camelize("meta"), meta },
-        { camelize("parameter_type"), parameter_type },
-        { camelize("parse_error"), parse_error },
-        { camelize("pickle"), pickle },
-        { camelize("source"), source },
-        { camelize("step_definition"), step_definition },
-        { camelize("test_case"), test_case },
-        { camelize("test_case_finished"), test_case_finished },
-        { camelize("test_case_started"), test_case_started },
-        { camelize("test_run_finished"), test_run_finished },
-        { camelize("test_run_started"), test_run_started },
-        { camelize("test_step_finished"), test_step_finished },
-        { camelize("test_step_started"), test_step_started },
-        { camelize("undefined_parameter_type"), undefined_parameter_type }
-    };
+    cucumber::messages::to_json(j, camelize("attachment"), attachment);
+    cucumber::messages::to_json(j, camelize("gherkin_document"), gherkin_document);
+    cucumber::messages::to_json(j, camelize("hook"), hook);
+    cucumber::messages::to_json(j, camelize("meta"), meta);
+    cucumber::messages::to_json(j, camelize("parameter_type"), parameter_type);
+    cucumber::messages::to_json(j, camelize("parse_error"), parse_error);
+    cucumber::messages::to_json(j, camelize("pickle"), pickle);
+    cucumber::messages::to_json(j, camelize("source"), source);
+    cucumber::messages::to_json(j, camelize("step_definition"), step_definition);
+    cucumber::messages::to_json(j, camelize("test_case"), test_case);
+    cucumber::messages::to_json(j, camelize("test_case_finished"), test_case_finished);
+    cucumber::messages::to_json(j, camelize("test_case_started"), test_case_started);
+    cucumber::messages::to_json(j, camelize("test_run_finished"), test_run_finished);
+    cucumber::messages::to_json(j, camelize("test_run_started"), test_run_started);
+    cucumber::messages::to_json(j, camelize("test_step_finished"), test_step_finished);
+    cucumber::messages::to_json(j, camelize("test_step_started"), test_step_started);
+    cucumber::messages::to_json(j, camelize("undefined_parameter_type"), undefined_parameter_type);
 }
 
 std::string
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/examples.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/examples.cpp
index 9aa88596..f2fbca9d 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/examples.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/examples.cpp
@@ -10,16 +10,14 @@ examples::to_string() const
 {
     std::ostringstream oss;
 
-    oss
-        << "location=" << location
-        << ", tags=" << tags
-        << ", keyword=" << keyword
-        << ", name=" << name
-        << ", description=" << description
-        << ", table_header=" << table_header
-        << ", table_body=" << table_body
-        << ", id=" << id
-        ;
+    cucumber::messages::to_string(oss, "location=", location);
+    cucumber::messages::to_string(oss, ", tags=", tags);
+    cucumber::messages::to_string(oss, ", keyword=", keyword);
+    cucumber::messages::to_string(oss, ", name=", name);
+    cucumber::messages::to_string(oss, ", description=", description);
+    cucumber::messages::to_string(oss, ", table_header=", table_header);
+    cucumber::messages::to_string(oss, ", table_body=", table_body);
+    cucumber::messages::to_string(oss, ", id=", id);
 
     return oss.str();
 }
@@ -27,16 +25,14 @@ examples::to_string() const
 void
 examples::to_json(json& j) const
 {
-    j = json{
-        { camelize("location"), location },
-        { camelize("tags"), tags },
-        { camelize("keyword"), keyword },
-        { camelize("name"), name },
-        { camelize("description"), description },
-        { camelize("table_header"), table_header },
-        { camelize("table_body"), table_body },
-        { camelize("id"), id }
-    };
+    cucumber::messages::to_json(j, camelize("location"), location);
+    cucumber::messages::to_json(j, camelize("tags"), tags);
+    cucumber::messages::to_json(j, camelize("keyword"), keyword);
+    cucumber::messages::to_json(j, camelize("name"), name);
+    cucumber::messages::to_json(j, camelize("description"), description);
+    cucumber::messages::to_json(j, camelize("table_header"), table_header);
+    cucumber::messages::to_json(j, camelize("table_body"), table_body);
+    cucumber::messages::to_json(j, camelize("id"), id);
 }
 
 std::string
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/exception.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/exception.cpp
index e2bb3d49..c7a6a29c 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/exception.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/exception.cpp
@@ -10,10 +10,8 @@ exception::to_string() const
 {
     std::ostringstream oss;
 
-    oss
-        << "type=" << type
-        << ", message=" << message
-        ;
+    cucumber::messages::to_string(oss, "type=", type);
+    cucumber::messages::to_string(oss, ", message=", message);
 
     return oss.str();
 }
@@ -21,10 +19,8 @@ exception::to_string() const
 void
 exception::to_json(json& j) const
 {
-    j = json{
-        { camelize("type"), type },
-        { camelize("message"), message }
-    };
+    cucumber::messages::to_json(j, camelize("type"), type);
+    cucumber::messages::to_json(j, camelize("message"), message);
 }
 
 std::string
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/feature.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/feature.cpp
index 69cdfe01..b2e5a586 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/feature.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/feature.cpp
@@ -10,15 +10,13 @@ feature::to_string() const
 {
     std::ostringstream oss;
 
-    oss
-        << "location=" << location
-        << ", tags=" << tags
-        << ", language=" << language
-        << ", keyword=" << keyword
-        << ", name=" << name
-        << ", description=" << description
-        << ", children=" << children
-        ;
+    cucumber::messages::to_string(oss, "location=", location);
+    cucumber::messages::to_string(oss, ", tags=", tags);
+    cucumber::messages::to_string(oss, ", language=", language);
+    cucumber::messages::to_string(oss, ", keyword=", keyword);
+    cucumber::messages::to_string(oss, ", name=", name);
+    cucumber::messages::to_string(oss, ", description=", description);
+    cucumber::messages::to_string(oss, ", children=", children);
 
     return oss.str();
 }
@@ -26,15 +24,13 @@ feature::to_string() const
 void
 feature::to_json(json& j) const
 {
-    j = json{
-        { camelize("location"), location },
-        { camelize("tags"), tags },
-        { camelize("language"), language },
-        { camelize("keyword"), keyword },
-        { camelize("name"), name },
-        { camelize("description"), description },
-        { camelize("children"), children }
-    };
+    cucumber::messages::to_json(j, camelize("location"), location);
+    cucumber::messages::to_json(j, camelize("tags"), tags);
+    cucumber::messages::to_json(j, camelize("language"), language);
+    cucumber::messages::to_json(j, camelize("keyword"), keyword);
+    cucumber::messages::to_json(j, camelize("name"), name);
+    cucumber::messages::to_json(j, camelize("description"), description);
+    cucumber::messages::to_json(j, camelize("children"), children);
 }
 
 std::string
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/feature_child.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/feature_child.cpp
index 420caf22..86f534b6 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/feature_child.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/feature_child.cpp
@@ -10,11 +10,9 @@ feature_child::to_string() const
 {
     std::ostringstream oss;
 
-    oss
-        << "rule=" << rule
-        << ", background=" << background
-        << ", scenario=" << scenario
-        ;
+    cucumber::messages::to_string(oss, "rule=", rule);
+    cucumber::messages::to_string(oss, ", background=", background);
+    cucumber::messages::to_string(oss, ", scenario=", scenario);
 
     return oss.str();
 }
@@ -22,11 +20,9 @@ feature_child::to_string() const
 void
 feature_child::to_json(json& j) const
 {
-    j = json{
-        { camelize("rule"), rule },
-        { camelize("background"), background },
-        { camelize("scenario"), scenario }
-    };
+    cucumber::messages::to_json(j, camelize("rule"), rule);
+    cucumber::messages::to_json(j, camelize("background"), background);
+    cucumber::messages::to_json(j, camelize("scenario"), scenario);
 }
 
 std::string
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/gherkin_document.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/gherkin_document.cpp
index 9934b562..b5c0fa82 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/gherkin_document.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/gherkin_document.cpp
@@ -10,11 +10,9 @@ gherkin_document::to_string() const
 {
     std::ostringstream oss;
 
-    oss
-        << "uri=" << uri
-        << ", feature=" << feature
-        << ", comments=" << comments
-        ;
+    cucumber::messages::to_string(oss, "uri=", uri);
+    cucumber::messages::to_string(oss, ", feature=", feature);
+    cucumber::messages::to_string(oss, ", comments=", comments);
 
     return oss.str();
 }
@@ -22,11 +20,9 @@ gherkin_document::to_string() const
 void
 gherkin_document::to_json(json& j) const
 {
-    j = json{
-        { camelize("uri"), uri },
-        { camelize("feature"), feature },
-        { camelize("comments"), comments }
-    };
+    cucumber::messages::to_json(j, camelize("uri"), uri);
+    cucumber::messages::to_json(j, camelize("feature"), feature);
+    cucumber::messages::to_json(j, camelize("comments"), comments);
 }
 
 std::string
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/git.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/git.cpp
index 9db80dfa..0411b163 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/git.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/git.cpp
@@ -10,12 +10,10 @@ git::to_string() const
 {
     std::ostringstream oss;
 
-    oss
-        << "remote=" << remote
-        << ", revision=" << revision
-        << ", branch=" << branch
-        << ", tag=" << tag
-        ;
+    cucumber::messages::to_string(oss, "remote=", remote);
+    cucumber::messages::to_string(oss, ", revision=", revision);
+    cucumber::messages::to_string(oss, ", branch=", branch);
+    cucumber::messages::to_string(oss, ", tag=", tag);
 
     return oss.str();
 }
@@ -23,12 +21,10 @@ git::to_string() const
 void
 git::to_json(json& j) const
 {
-    j = json{
-        { camelize("remote"), remote },
-        { camelize("revision"), revision },
-        { camelize("branch"), branch },
-        { camelize("tag"), tag }
-    };
+    cucumber::messages::to_json(j, camelize("remote"), remote);
+    cucumber::messages::to_json(j, camelize("revision"), revision);
+    cucumber::messages::to_json(j, camelize("branch"), branch);
+    cucumber::messages::to_json(j, camelize("tag"), tag);
 }
 
 std::string
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/group.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/group.cpp
index 58d1c0b3..54cf4a2a 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/group.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/group.cpp
@@ -10,11 +10,9 @@ group::to_string() const
 {
     std::ostringstream oss;
 
-    oss
-        << "children=" << children
-        << ", start=" << start
-        << ", value=" << value
-        ;
+    cucumber::messages::to_string(oss, "children=", children);
+    cucumber::messages::to_string(oss, ", start=", start);
+    cucumber::messages::to_string(oss, ", value=", value);
 
     return oss.str();
 }
@@ -22,11 +20,9 @@ group::to_string() const
 void
 group::to_json(json& j) const
 {
-    j = json{
-        { camelize("children"), children },
-        { camelize("start"), start },
-        { camelize("value"), value }
-    };
+    cucumber::messages::to_json(j, camelize("children"), children);
+    cucumber::messages::to_json(j, camelize("start"), start);
+    cucumber::messages::to_json(j, camelize("value"), value);
 }
 
 std::string
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/hook.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/hook.cpp
index e5bd639e..7566258a 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/hook.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/hook.cpp
@@ -10,12 +10,10 @@ hook::to_string() const
 {
     std::ostringstream oss;
 
-    oss
-        << "id=" << id
-        << ", name=" << name
-        << ", source_reference=" << source_reference
-        << ", tag_expression=" << tag_expression
-        ;
+    cucumber::messages::to_string(oss, "id=", id);
+    cucumber::messages::to_string(oss, ", name=", name);
+    cucumber::messages::to_string(oss, ", source_reference=", source_reference);
+    cucumber::messages::to_string(oss, ", tag_expression=", tag_expression);
 
     return oss.str();
 }
@@ -23,12 +21,10 @@ hook::to_string() const
 void
 hook::to_json(json& j) const
 {
-    j = json{
-        { camelize("id"), id },
-        { camelize("name"), name },
-        { camelize("source_reference"), source_reference },
-        { camelize("tag_expression"), tag_expression }
-    };
+    cucumber::messages::to_json(j, camelize("id"), id);
+    cucumber::messages::to_json(j, camelize("name"), name);
+    cucumber::messages::to_json(j, camelize("source_reference"), source_reference);
+    cucumber::messages::to_json(j, camelize("tag_expression"), tag_expression);
 }
 
 std::string
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/java_method.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/java_method.cpp
index 462288bd..bcb6515e 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/java_method.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/java_method.cpp
@@ -10,11 +10,9 @@ java_method::to_string() const
 {
     std::ostringstream oss;
 
-    oss
-        << "class_name=" << class_name
-        << ", method_name=" << method_name
-        << ", method_parameter_types=" << method_parameter_types
-        ;
+    cucumber::messages::to_string(oss, "class_name=", class_name);
+    cucumber::messages::to_string(oss, ", method_name=", method_name);
+    cucumber::messages::to_string(oss, ", method_parameter_types=", method_parameter_types);
 
     return oss.str();
 }
@@ -22,11 +20,9 @@ java_method::to_string() const
 void
 java_method::to_json(json& j) const
 {
-    j = json{
-        { camelize("class_name"), class_name },
-        { camelize("method_name"), method_name },
-        { camelize("method_parameter_types"), method_parameter_types }
-    };
+    cucumber::messages::to_json(j, camelize("class_name"), class_name);
+    cucumber::messages::to_json(j, camelize("method_name"), method_name);
+    cucumber::messages::to_json(j, camelize("method_parameter_types"), method_parameter_types);
 }
 
 std::string
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/java_stack_trace_element.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/java_stack_trace_element.cpp
index 3176623b..011d1a9b 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/java_stack_trace_element.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/java_stack_trace_element.cpp
@@ -10,11 +10,9 @@ java_stack_trace_element::to_string() const
 {
     std::ostringstream oss;
 
-    oss
-        << "class_name=" << class_name
-        << ", file_name=" << file_name
-        << ", method_name=" << method_name
-        ;
+    cucumber::messages::to_string(oss, "class_name=", class_name);
+    cucumber::messages::to_string(oss, ", file_name=", file_name);
+    cucumber::messages::to_string(oss, ", method_name=", method_name);
 
     return oss.str();
 }
@@ -22,11 +20,9 @@ java_stack_trace_element::to_string() const
 void
 java_stack_trace_element::to_json(json& j) const
 {
-    j = json{
-        { camelize("class_name"), class_name },
-        { camelize("file_name"), file_name },
-        { camelize("method_name"), method_name }
-    };
+    cucumber::messages::to_json(j, camelize("class_name"), class_name);
+    cucumber::messages::to_json(j, camelize("file_name"), file_name);
+    cucumber::messages::to_json(j, camelize("method_name"), method_name);
 }
 
 std::string
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/location.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/location.cpp
index 20c82330..e2f5699e 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/location.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/location.cpp
@@ -10,10 +10,8 @@ location::to_string() const
 {
     std::ostringstream oss;
 
-    oss
-        << "line=" << line
-        << ", column=" << column
-        ;
+    cucumber::messages::to_string(oss, "line=", line);
+    cucumber::messages::to_string(oss, ", column=", column);
 
     return oss.str();
 }
@@ -21,10 +19,8 @@ location::to_string() const
 void
 location::to_json(json& j) const
 {
-    j = json{
-        { camelize("line"), line },
-        { camelize("column"), column }
-    };
+    cucumber::messages::to_json(j, camelize("line"), line);
+    cucumber::messages::to_json(j, camelize("column"), column);
 }
 
 std::string
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/meta.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/meta.cpp
index fb875afe..0297fec5 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/meta.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/meta.cpp
@@ -10,14 +10,12 @@ meta::to_string() const
 {
     std::ostringstream oss;
 
-    oss
-        << "protocol_version=" << protocol_version
-        << ", implementation=" << implementation
-        << ", runtime=" << runtime
-        << ", os=" << os
-        << ", cpu=" << cpu
-        << ", ci=" << ci
-        ;
+    cucumber::messages::to_string(oss, "protocol_version=", protocol_version);
+    cucumber::messages::to_string(oss, ", implementation=", implementation);
+    cucumber::messages::to_string(oss, ", runtime=", runtime);
+    cucumber::messages::to_string(oss, ", os=", os);
+    cucumber::messages::to_string(oss, ", cpu=", cpu);
+    cucumber::messages::to_string(oss, ", ci=", ci);
 
     return oss.str();
 }
@@ -25,14 +23,12 @@ meta::to_string() const
 void
 meta::to_json(json& j) const
 {
-    j = json{
-        { camelize("protocol_version"), protocol_version },
-        { camelize("implementation"), implementation },
-        { camelize("runtime"), runtime },
-        { camelize("os"), os },
-        { camelize("cpu"), cpu },
-        { camelize("ci"), ci }
-    };
+    cucumber::messages::to_json(j, camelize("protocol_version"), protocol_version);
+    cucumber::messages::to_json(j, camelize("implementation"), implementation);
+    cucumber::messages::to_json(j, camelize("runtime"), runtime);
+    cucumber::messages::to_json(j, camelize("os"), os);
+    cucumber::messages::to_json(j, camelize("cpu"), cpu);
+    cucumber::messages::to_json(j, camelize("ci"), ci);
 }
 
 std::string
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/parameter_type.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/parameter_type.cpp
index 7daf1d8c..52a6f1c0 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/parameter_type.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/parameter_type.cpp
@@ -10,14 +10,12 @@ parameter_type::to_string() const
 {
     std::ostringstream oss;
 
-    oss
-        << "name=" << name
-        << ", regular_expressions=" << regular_expressions
-        << ", prefer_for_regular_expression_match=" << prefer_for_regular_expression_match
-        << ", use_for_snippets=" << use_for_snippets
-        << ", id=" << id
-        << ", source_reference=" << source_reference
-        ;
+    cucumber::messages::to_string(oss, "name=", name);
+    cucumber::messages::to_string(oss, ", regular_expressions=", regular_expressions);
+    cucumber::messages::to_string(oss, ", prefer_for_regular_expression_match=", prefer_for_regular_expression_match);
+    cucumber::messages::to_string(oss, ", use_for_snippets=", use_for_snippets);
+    cucumber::messages::to_string(oss, ", id=", id);
+    cucumber::messages::to_string(oss, ", source_reference=", source_reference);
 
     return oss.str();
 }
@@ -25,14 +23,12 @@ parameter_type::to_string() const
 void
 parameter_type::to_json(json& j) const
 {
-    j = json{
-        { camelize("name"), name },
-        { camelize("regular_expressions"), regular_expressions },
-        { camelize("prefer_for_regular_expression_match"), prefer_for_regular_expression_match },
-        { camelize("use_for_snippets"), use_for_snippets },
-        { camelize("id"), id },
-        { camelize("source_reference"), source_reference }
-    };
+    cucumber::messages::to_json(j, camelize("name"), name);
+    cucumber::messages::to_json(j, camelize("regular_expressions"), regular_expressions);
+    cucumber::messages::to_json(j, camelize("prefer_for_regular_expression_match"), prefer_for_regular_expression_match);
+    cucumber::messages::to_json(j, camelize("use_for_snippets"), use_for_snippets);
+    cucumber::messages::to_json(j, camelize("id"), id);
+    cucumber::messages::to_json(j, camelize("source_reference"), source_reference);
 }
 
 std::string
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/parse_error.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/parse_error.cpp
index 0317c37d..bef2eece 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/parse_error.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/parse_error.cpp
@@ -10,10 +10,8 @@ parse_error::to_string() const
 {
     std::ostringstream oss;
 
-    oss
-        << "source=" << source
-        << ", message=" << message
-        ;
+    cucumber::messages::to_string(oss, "source=", source);
+    cucumber::messages::to_string(oss, ", message=", message);
 
     return oss.str();
 }
@@ -21,10 +19,8 @@ parse_error::to_string() const
 void
 parse_error::to_json(json& j) const
 {
-    j = json{
-        { camelize("source"), source },
-        { camelize("message"), message }
-    };
+    cucumber::messages::to_json(j, camelize("source"), source);
+    cucumber::messages::to_json(j, camelize("message"), message);
 }
 
 std::string
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/pickle.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/pickle.cpp
index c37cacdc..e8fd1896 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/pickle.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/pickle.cpp
@@ -10,15 +10,13 @@ pickle::to_string() const
 {
     std::ostringstream oss;
 
-    oss
-        << "id=" << id
-        << ", uri=" << uri
-        << ", name=" << name
-        << ", language=" << language
-        << ", steps=" << steps
-        << ", tags=" << tags
-        << ", ast_node_ids=" << ast_node_ids
-        ;
+    cucumber::messages::to_string(oss, "id=", id);
+    cucumber::messages::to_string(oss, ", uri=", uri);
+    cucumber::messages::to_string(oss, ", name=", name);
+    cucumber::messages::to_string(oss, ", language=", language);
+    cucumber::messages::to_string(oss, ", steps=", steps);
+    cucumber::messages::to_string(oss, ", tags=", tags);
+    cucumber::messages::to_string(oss, ", ast_node_ids=", ast_node_ids);
 
     return oss.str();
 }
@@ -26,15 +24,13 @@ pickle::to_string() const
 void
 pickle::to_json(json& j) const
 {
-    j = json{
-        { camelize("id"), id },
-        { camelize("uri"), uri },
-        { camelize("name"), name },
-        { camelize("language"), language },
-        { camelize("steps"), steps },
-        { camelize("tags"), tags },
-        { camelize("ast_node_ids"), ast_node_ids }
-    };
+    cucumber::messages::to_json(j, camelize("id"), id);
+    cucumber::messages::to_json(j, camelize("uri"), uri);
+    cucumber::messages::to_json(j, camelize("name"), name);
+    cucumber::messages::to_json(j, camelize("language"), language);
+    cucumber::messages::to_json(j, camelize("steps"), steps);
+    cucumber::messages::to_json(j, camelize("tags"), tags);
+    cucumber::messages::to_json(j, camelize("ast_node_ids"), ast_node_ids);
 }
 
 std::string
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_doc_string.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_doc_string.cpp
index 57059fb3..388d8b1c 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_doc_string.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_doc_string.cpp
@@ -10,10 +10,8 @@ pickle_doc_string::to_string() const
 {
     std::ostringstream oss;
 
-    oss
-        << "media_type=" << media_type
-        << ", content=" << content
-        ;
+    cucumber::messages::to_string(oss, "media_type=", media_type);
+    cucumber::messages::to_string(oss, ", content=", content);
 
     return oss.str();
 }
@@ -21,10 +19,8 @@ pickle_doc_string::to_string() const
 void
 pickle_doc_string::to_json(json& j) const
 {
-    j = json{
-        { camelize("media_type"), media_type },
-        { camelize("content"), content }
-    };
+    cucumber::messages::to_json(j, camelize("media_type"), media_type);
+    cucumber::messages::to_json(j, camelize("content"), content);
 }
 
 std::string
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_step.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_step.cpp
index c7b12118..5437dd07 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_step.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_step.cpp
@@ -10,13 +10,11 @@ pickle_step::to_string() const
 {
     std::ostringstream oss;
 
-    oss
-        << "argument=" << argument
-        << ", ast_node_ids=" << ast_node_ids
-        << ", id=" << id
-        << ", type=" << type
-        << ", text=" << text
-        ;
+    cucumber::messages::to_string(oss, "argument=", argument);
+    cucumber::messages::to_string(oss, ", ast_node_ids=", ast_node_ids);
+    cucumber::messages::to_string(oss, ", id=", id);
+    cucumber::messages::to_string(oss, ", type=", type);
+    cucumber::messages::to_string(oss, ", text=", text);
 
     return oss.str();
 }
@@ -24,13 +22,11 @@ pickle_step::to_string() const
 void
 pickle_step::to_json(json& j) const
 {
-    j = json{
-        { camelize("argument"), argument },
-        { camelize("ast_node_ids"), ast_node_ids },
-        { camelize("id"), id },
-        { camelize("type"), type },
-        { camelize("text"), text }
-    };
+    cucumber::messages::to_json(j, camelize("argument"), argument);
+    cucumber::messages::to_json(j, camelize("ast_node_ids"), ast_node_ids);
+    cucumber::messages::to_json(j, camelize("id"), id);
+    cucumber::messages::to_json(j, camelize("type"), type);
+    cucumber::messages::to_json(j, camelize("text"), text);
 }
 
 std::string
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_step_argument.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_step_argument.cpp
index b54e4f0c..a28d56a0 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_step_argument.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_step_argument.cpp
@@ -10,10 +10,8 @@ pickle_step_argument::to_string() const
 {
     std::ostringstream oss;
 
-    oss
-        << "doc_string=" << doc_string
-        << ", data_table=" << data_table
-        ;
+    cucumber::messages::to_string(oss, "doc_string=", doc_string);
+    cucumber::messages::to_string(oss, ", data_table=", data_table);
 
     return oss.str();
 }
@@ -21,10 +19,8 @@ pickle_step_argument::to_string() const
 void
 pickle_step_argument::to_json(json& j) const
 {
-    j = json{
-        { camelize("doc_string"), doc_string },
-        { camelize("data_table"), data_table }
-    };
+    cucumber::messages::to_json(j, camelize("doc_string"), doc_string);
+    cucumber::messages::to_json(j, camelize("data_table"), data_table);
 }
 
 std::string
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_table.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_table.cpp
index 0f16c757..d9fcd2cc 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_table.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_table.cpp
@@ -10,9 +10,7 @@ pickle_table::to_string() const
 {
     std::ostringstream oss;
 
-    oss
-        << "rows=" << rows
-        ;
+    cucumber::messages::to_string(oss, "rows=", rows);
 
     return oss.str();
 }
@@ -20,9 +18,7 @@ pickle_table::to_string() const
 void
 pickle_table::to_json(json& j) const
 {
-    j = json{
-        { camelize("rows"), rows }
-    };
+    cucumber::messages::to_json(j, camelize("rows"), rows);
 }
 
 std::string
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_table_cell.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_table_cell.cpp
index b1591e5c..b4ac5bdf 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_table_cell.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_table_cell.cpp
@@ -10,9 +10,7 @@ pickle_table_cell::to_string() const
 {
     std::ostringstream oss;
 
-    oss
-        << "value=" << value
-        ;
+    cucumber::messages::to_string(oss, "value=", value);
 
     return oss.str();
 }
@@ -20,9 +18,7 @@ pickle_table_cell::to_string() const
 void
 pickle_table_cell::to_json(json& j) const
 {
-    j = json{
-        { camelize("value"), value }
-    };
+    cucumber::messages::to_json(j, camelize("value"), value);
 }
 
 std::string
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_table_row.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_table_row.cpp
index da3ed5ac..13a09cca 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_table_row.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_table_row.cpp
@@ -10,9 +10,7 @@ pickle_table_row::to_string() const
 {
     std::ostringstream oss;
 
-    oss
-        << "cells=" << cells
-        ;
+    cucumber::messages::to_string(oss, "cells=", cells);
 
     return oss.str();
 }
@@ -20,9 +18,7 @@ pickle_table_row::to_string() const
 void
 pickle_table_row::to_json(json& j) const
 {
-    j = json{
-        { camelize("cells"), cells }
-    };
+    cucumber::messages::to_json(j, camelize("cells"), cells);
 }
 
 std::string
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_tag.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_tag.cpp
index 07744d60..0e194894 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_tag.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/pickle_tag.cpp
@@ -10,10 +10,8 @@ pickle_tag::to_string() const
 {
     std::ostringstream oss;
 
-    oss
-        << "name=" << name
-        << ", ast_node_id=" << ast_node_id
-        ;
+    cucumber::messages::to_string(oss, "name=", name);
+    cucumber::messages::to_string(oss, ", ast_node_id=", ast_node_id);
 
     return oss.str();
 }
@@ -21,10 +19,8 @@ pickle_tag::to_string() const
 void
 pickle_tag::to_json(json& j) const
 {
-    j = json{
-        { camelize("name"), name },
-        { camelize("ast_node_id"), ast_node_id }
-    };
+    cucumber::messages::to_json(j, camelize("name"), name);
+    cucumber::messages::to_json(j, camelize("ast_node_id"), ast_node_id);
 }
 
 std::string
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/product.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/product.cpp
index a4d2c3f3..92960bb4 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/product.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/product.cpp
@@ -10,10 +10,8 @@ product::to_string() const
 {
     std::ostringstream oss;
 
-    oss
-        << "name=" << name
-        << ", version=" << version
-        ;
+    cucumber::messages::to_string(oss, "name=", name);
+    cucumber::messages::to_string(oss, ", version=", version);
 
     return oss.str();
 }
@@ -21,10 +19,8 @@ product::to_string() const
 void
 product::to_json(json& j) const
 {
-    j = json{
-        { camelize("name"), name },
-        { camelize("version"), version }
-    };
+    cucumber::messages::to_json(j, camelize("name"), name);
+    cucumber::messages::to_json(j, camelize("version"), version);
 }
 
 std::string
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/rule.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/rule.cpp
index ae93eb47..03d5a9ba 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/rule.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/rule.cpp
@@ -10,15 +10,13 @@ rule::to_string() const
 {
     std::ostringstream oss;
 
-    oss
-        << "location=" << location
-        << ", tags=" << tags
-        << ", keyword=" << keyword
-        << ", name=" << name
-        << ", description=" << description
-        << ", children=" << children
-        << ", id=" << id
-        ;
+    cucumber::messages::to_string(oss, "location=", location);
+    cucumber::messages::to_string(oss, ", tags=", tags);
+    cucumber::messages::to_string(oss, ", keyword=", keyword);
+    cucumber::messages::to_string(oss, ", name=", name);
+    cucumber::messages::to_string(oss, ", description=", description);
+    cucumber::messages::to_string(oss, ", children=", children);
+    cucumber::messages::to_string(oss, ", id=", id);
 
     return oss.str();
 }
@@ -26,15 +24,13 @@ rule::to_string() const
 void
 rule::to_json(json& j) const
 {
-    j = json{
-        { camelize("location"), location },
-        { camelize("tags"), tags },
-        { camelize("keyword"), keyword },
-        { camelize("name"), name },
-        { camelize("description"), description },
-        { camelize("children"), children },
-        { camelize("id"), id }
-    };
+    cucumber::messages::to_json(j, camelize("location"), location);
+    cucumber::messages::to_json(j, camelize("tags"), tags);
+    cucumber::messages::to_json(j, camelize("keyword"), keyword);
+    cucumber::messages::to_json(j, camelize("name"), name);
+    cucumber::messages::to_json(j, camelize("description"), description);
+    cucumber::messages::to_json(j, camelize("children"), children);
+    cucumber::messages::to_json(j, camelize("id"), id);
 }
 
 std::string
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/rule_child.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/rule_child.cpp
index 0be078d6..ea1e83a8 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/rule_child.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/rule_child.cpp
@@ -10,10 +10,8 @@ rule_child::to_string() const
 {
     std::ostringstream oss;
 
-    oss
-        << "background=" << background
-        << ", scenario=" << scenario
-        ;
+    cucumber::messages::to_string(oss, "background=", background);
+    cucumber::messages::to_string(oss, ", scenario=", scenario);
 
     return oss.str();
 }
@@ -21,10 +19,8 @@ rule_child::to_string() const
 void
 rule_child::to_json(json& j) const
 {
-    j = json{
-        { camelize("background"), background },
-        { camelize("scenario"), scenario }
-    };
+    cucumber::messages::to_json(j, camelize("background"), background);
+    cucumber::messages::to_json(j, camelize("scenario"), scenario);
 }
 
 std::string
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/scenario.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/scenario.cpp
index 14f3b922..991abdcf 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/scenario.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/scenario.cpp
@@ -10,16 +10,14 @@ scenario::to_string() const
 {
     std::ostringstream oss;
 
-    oss
-        << "location=" << location
-        << ", tags=" << tags
-        << ", keyword=" << keyword
-        << ", name=" << name
-        << ", description=" << description
-        << ", steps=" << steps
-        << ", examples=" << examples
-        << ", id=" << id
-        ;
+    cucumber::messages::to_string(oss, "location=", location);
+    cucumber::messages::to_string(oss, ", tags=", tags);
+    cucumber::messages::to_string(oss, ", keyword=", keyword);
+    cucumber::messages::to_string(oss, ", name=", name);
+    cucumber::messages::to_string(oss, ", description=", description);
+    cucumber::messages::to_string(oss, ", steps=", steps);
+    cucumber::messages::to_string(oss, ", examples=", examples);
+    cucumber::messages::to_string(oss, ", id=", id);
 
     return oss.str();
 }
@@ -27,16 +25,14 @@ scenario::to_string() const
 void
 scenario::to_json(json& j) const
 {
-    j = json{
-        { camelize("location"), location },
-        { camelize("tags"), tags },
-        { camelize("keyword"), keyword },
-        { camelize("name"), name },
-        { camelize("description"), description },
-        { camelize("steps"), steps },
-        { camelize("examples"), examples },
-        { camelize("id"), id }
-    };
+    cucumber::messages::to_json(j, camelize("location"), location);
+    cucumber::messages::to_json(j, camelize("tags"), tags);
+    cucumber::messages::to_json(j, camelize("keyword"), keyword);
+    cucumber::messages::to_json(j, camelize("name"), name);
+    cucumber::messages::to_json(j, camelize("description"), description);
+    cucumber::messages::to_json(j, camelize("steps"), steps);
+    cucumber::messages::to_json(j, camelize("examples"), examples);
+    cucumber::messages::to_json(j, camelize("id"), id);
 }
 
 std::string
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/source.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/source.cpp
index db31b5ac..f647beb7 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/source.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/source.cpp
@@ -10,11 +10,9 @@ source::to_string() const
 {
     std::ostringstream oss;
 
-    oss
-        << "uri=" << uri
-        << ", data=" << data
-        << ", media_type=" << media_type
-        ;
+    cucumber::messages::to_string(oss, "uri=", uri);
+    cucumber::messages::to_string(oss, ", data=", data);
+    cucumber::messages::to_string(oss, ", media_type=", media_type);
 
     return oss.str();
 }
@@ -22,11 +20,9 @@ source::to_string() const
 void
 source::to_json(json& j) const
 {
-    j = json{
-        { camelize("uri"), uri },
-        { camelize("data"), data },
-        { camelize("media_type"), media_type }
-    };
+    cucumber::messages::to_json(j, camelize("uri"), uri);
+    cucumber::messages::to_json(j, camelize("data"), data);
+    cucumber::messages::to_json(j, camelize("media_type"), media_type);
 }
 
 std::string
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/source_reference.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/source_reference.cpp
index c8949149..660a6dd1 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/source_reference.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/source_reference.cpp
@@ -10,12 +10,10 @@ source_reference::to_string() const
 {
     std::ostringstream oss;
 
-    oss
-        << "uri=" << uri
-        << ", java_method=" << java_method
-        << ", java_stack_trace_element=" << java_stack_trace_element
-        << ", location=" << location
-        ;
+    cucumber::messages::to_string(oss, "uri=", uri);
+    cucumber::messages::to_string(oss, ", java_method=", java_method);
+    cucumber::messages::to_string(oss, ", java_stack_trace_element=", java_stack_trace_element);
+    cucumber::messages::to_string(oss, ", location=", location);
 
     return oss.str();
 }
@@ -23,12 +21,10 @@ source_reference::to_string() const
 void
 source_reference::to_json(json& j) const
 {
-    j = json{
-        { camelize("uri"), uri },
-        { camelize("java_method"), java_method },
-        { camelize("java_stack_trace_element"), java_stack_trace_element },
-        { camelize("location"), location }
-    };
+    cucumber::messages::to_json(j, camelize("uri"), uri);
+    cucumber::messages::to_json(j, camelize("java_method"), java_method);
+    cucumber::messages::to_json(j, camelize("java_stack_trace_element"), java_stack_trace_element);
+    cucumber::messages::to_json(j, camelize("location"), location);
 }
 
 std::string
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/step.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/step.cpp
index 196b585b..732f7029 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/step.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/step.cpp
@@ -10,15 +10,13 @@ step::to_string() const
 {
     std::ostringstream oss;
 
-    oss
-        << "location=" << location
-        << ", keyword=" << keyword
-        << ", keyword_type=" << keyword_type
-        << ", text=" << text
-        << ", doc_string=" << doc_string
-        << ", data_table=" << data_table
-        << ", id=" << id
-        ;
+    cucumber::messages::to_string(oss, "location=", location);
+    cucumber::messages::to_string(oss, ", keyword=", keyword);
+    cucumber::messages::to_string(oss, ", keyword_type=", keyword_type);
+    cucumber::messages::to_string(oss, ", text=", text);
+    cucumber::messages::to_string(oss, ", doc_string=", doc_string);
+    cucumber::messages::to_string(oss, ", data_table=", data_table);
+    cucumber::messages::to_string(oss, ", id=", id);
 
     return oss.str();
 }
@@ -26,15 +24,13 @@ step::to_string() const
 void
 step::to_json(json& j) const
 {
-    j = json{
-        { camelize("location"), location },
-        { camelize("keyword"), keyword },
-        { camelize("keyword_type"), keyword_type },
-        { camelize("text"), text },
-        { camelize("doc_string"), doc_string },
-        { camelize("data_table"), data_table },
-        { camelize("id"), id }
-    };
+    cucumber::messages::to_json(j, camelize("location"), location);
+    cucumber::messages::to_json(j, camelize("keyword"), keyword);
+    cucumber::messages::to_json(j, camelize("keyword_type"), keyword_type);
+    cucumber::messages::to_json(j, camelize("text"), text);
+    cucumber::messages::to_json(j, camelize("doc_string"), doc_string);
+    cucumber::messages::to_json(j, camelize("data_table"), data_table);
+    cucumber::messages::to_json(j, camelize("id"), id);
 }
 
 std::string
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/step_definition.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/step_definition.cpp
index 20f45cd2..5e62dcfa 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/step_definition.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/step_definition.cpp
@@ -10,11 +10,9 @@ step_definition::to_string() const
 {
     std::ostringstream oss;
 
-    oss
-        << "id=" << id
-        << ", pattern=" << pattern
-        << ", source_reference=" << source_reference
-        ;
+    cucumber::messages::to_string(oss, "id=", id);
+    cucumber::messages::to_string(oss, ", pattern=", pattern);
+    cucumber::messages::to_string(oss, ", source_reference=", source_reference);
 
     return oss.str();
 }
@@ -22,11 +20,9 @@ step_definition::to_string() const
 void
 step_definition::to_json(json& j) const
 {
-    j = json{
-        { camelize("id"), id },
-        { camelize("pattern"), pattern },
-        { camelize("source_reference"), source_reference }
-    };
+    cucumber::messages::to_json(j, camelize("id"), id);
+    cucumber::messages::to_json(j, camelize("pattern"), pattern);
+    cucumber::messages::to_json(j, camelize("source_reference"), source_reference);
 }
 
 std::string
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/step_definition_pattern.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/step_definition_pattern.cpp
index ca0fec25..e76a4740 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/step_definition_pattern.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/step_definition_pattern.cpp
@@ -10,10 +10,8 @@ step_definition_pattern::to_string() const
 {
     std::ostringstream oss;
 
-    oss
-        << "source=" << source
-        << ", type=" << type
-        ;
+    cucumber::messages::to_string(oss, "source=", source);
+    cucumber::messages::to_string(oss, ", type=", type);
 
     return oss.str();
 }
@@ -21,10 +19,8 @@ step_definition_pattern::to_string() const
 void
 step_definition_pattern::to_json(json& j) const
 {
-    j = json{
-        { camelize("source"), source },
-        { camelize("type"), type }
-    };
+    cucumber::messages::to_json(j, camelize("source"), source);
+    cucumber::messages::to_json(j, camelize("type"), type);
 }
 
 std::string
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/step_match_argument.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/step_match_argument.cpp
index 180b0ce3..9fd58691 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/step_match_argument.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/step_match_argument.cpp
@@ -10,10 +10,8 @@ step_match_argument::to_string() const
 {
     std::ostringstream oss;
 
-    oss
-        << "group=" << group
-        << ", parameter_type_name=" << parameter_type_name
-        ;
+    cucumber::messages::to_string(oss, "group=", group);
+    cucumber::messages::to_string(oss, ", parameter_type_name=", parameter_type_name);
 
     return oss.str();
 }
@@ -21,10 +19,8 @@ step_match_argument::to_string() const
 void
 step_match_argument::to_json(json& j) const
 {
-    j = json{
-        { camelize("group"), group },
-        { camelize("parameter_type_name"), parameter_type_name }
-    };
+    cucumber::messages::to_json(j, camelize("group"), group);
+    cucumber::messages::to_json(j, camelize("parameter_type_name"), parameter_type_name);
 }
 
 std::string
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/step_match_arguments_list.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/step_match_arguments_list.cpp
index 95bff05f..5a7ede42 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/step_match_arguments_list.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/step_match_arguments_list.cpp
@@ -10,9 +10,7 @@ step_match_arguments_list::to_string() const
 {
     std::ostringstream oss;
 
-    oss
-        << "step_match_arguments=" << step_match_arguments
-        ;
+    cucumber::messages::to_string(oss, "step_match_arguments=", step_match_arguments);
 
     return oss.str();
 }
@@ -20,9 +18,7 @@ step_match_arguments_list::to_string() const
 void
 step_match_arguments_list::to_json(json& j) const
 {
-    j = json{
-        { camelize("step_match_arguments"), step_match_arguments }
-    };
+    cucumber::messages::to_json(j, camelize("step_match_arguments"), step_match_arguments);
 }
 
 std::string
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/table_cell.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/table_cell.cpp
index 7d268ad1..5ec1aaa6 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/table_cell.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/table_cell.cpp
@@ -10,10 +10,8 @@ table_cell::to_string() const
 {
     std::ostringstream oss;
 
-    oss
-        << "location=" << location
-        << ", value=" << value
-        ;
+    cucumber::messages::to_string(oss, "location=", location);
+    cucumber::messages::to_string(oss, ", value=", value);
 
     return oss.str();
 }
@@ -21,10 +19,8 @@ table_cell::to_string() const
 void
 table_cell::to_json(json& j) const
 {
-    j = json{
-        { camelize("location"), location },
-        { camelize("value"), value }
-    };
+    cucumber::messages::to_json(j, camelize("location"), location);
+    cucumber::messages::to_json(j, camelize("value"), value);
 }
 
 std::string
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/table_row.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/table_row.cpp
index bad9485f..c1f9d94d 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/table_row.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/table_row.cpp
@@ -10,11 +10,9 @@ table_row::to_string() const
 {
     std::ostringstream oss;
 
-    oss
-        << "location=" << location
-        << ", cells=" << cells
-        << ", id=" << id
-        ;
+    cucumber::messages::to_string(oss, "location=", location);
+    cucumber::messages::to_string(oss, ", cells=", cells);
+    cucumber::messages::to_string(oss, ", id=", id);
 
     return oss.str();
 }
@@ -22,11 +20,9 @@ table_row::to_string() const
 void
 table_row::to_json(json& j) const
 {
-    j = json{
-        { camelize("location"), location },
-        { camelize("cells"), cells },
-        { camelize("id"), id }
-    };
+    cucumber::messages::to_json(j, camelize("location"), location);
+    cucumber::messages::to_json(j, camelize("cells"), cells);
+    cucumber::messages::to_json(j, camelize("id"), id);
 }
 
 std::string
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/tag.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/tag.cpp
index 2dbf092e..becb0562 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/tag.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/tag.cpp
@@ -10,11 +10,9 @@ tag::to_string() const
 {
     std::ostringstream oss;
 
-    oss
-        << "location=" << location
-        << ", name=" << name
-        << ", id=" << id
-        ;
+    cucumber::messages::to_string(oss, "location=", location);
+    cucumber::messages::to_string(oss, ", name=", name);
+    cucumber::messages::to_string(oss, ", id=", id);
 
     return oss.str();
 }
@@ -22,11 +20,9 @@ tag::to_string() const
 void
 tag::to_json(json& j) const
 {
-    j = json{
-        { camelize("location"), location },
-        { camelize("name"), name },
-        { camelize("id"), id }
-    };
+    cucumber::messages::to_json(j, camelize("location"), location);
+    cucumber::messages::to_json(j, camelize("name"), name);
+    cucumber::messages::to_json(j, camelize("id"), id);
 }
 
 std::string
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/test_case.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/test_case.cpp
index 06873d33..6a9070f3 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/test_case.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/test_case.cpp
@@ -10,11 +10,9 @@ test_case::to_string() const
 {
     std::ostringstream oss;
 
-    oss
-        << "id=" << id
-        << ", pickle_id=" << pickle_id
-        << ", test_steps=" << test_steps
-        ;
+    cucumber::messages::to_string(oss, "id=", id);
+    cucumber::messages::to_string(oss, ", pickle_id=", pickle_id);
+    cucumber::messages::to_string(oss, ", test_steps=", test_steps);
 
     return oss.str();
 }
@@ -22,11 +20,9 @@ test_case::to_string() const
 void
 test_case::to_json(json& j) const
 {
-    j = json{
-        { camelize("id"), id },
-        { camelize("pickle_id"), pickle_id },
-        { camelize("test_steps"), test_steps }
-    };
+    cucumber::messages::to_json(j, camelize("id"), id);
+    cucumber::messages::to_json(j, camelize("pickle_id"), pickle_id);
+    cucumber::messages::to_json(j, camelize("test_steps"), test_steps);
 }
 
 std::string
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/test_case_finished.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/test_case_finished.cpp
index 14c2f05e..3f313a4d 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/test_case_finished.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/test_case_finished.cpp
@@ -10,11 +10,9 @@ test_case_finished::to_string() const
 {
     std::ostringstream oss;
 
-    oss
-        << "test_case_started_id=" << test_case_started_id
-        << ", timestamp=" << timestamp
-        << ", will_be_retried=" << will_be_retried
-        ;
+    cucumber::messages::to_string(oss, "test_case_started_id=", test_case_started_id);
+    cucumber::messages::to_string(oss, ", timestamp=", timestamp);
+    cucumber::messages::to_string(oss, ", will_be_retried=", will_be_retried);
 
     return oss.str();
 }
@@ -22,11 +20,9 @@ test_case_finished::to_string() const
 void
 test_case_finished::to_json(json& j) const
 {
-    j = json{
-        { camelize("test_case_started_id"), test_case_started_id },
-        { camelize("timestamp"), timestamp },
-        { camelize("will_be_retried"), will_be_retried }
-    };
+    cucumber::messages::to_json(j, camelize("test_case_started_id"), test_case_started_id);
+    cucumber::messages::to_json(j, camelize("timestamp"), timestamp);
+    cucumber::messages::to_json(j, camelize("will_be_retried"), will_be_retried);
 }
 
 std::string
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/test_case_started.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/test_case_started.cpp
index 600da8e6..69d497b8 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/test_case_started.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/test_case_started.cpp
@@ -10,13 +10,11 @@ test_case_started::to_string() const
 {
     std::ostringstream oss;
 
-    oss
-        << "attempt=" << attempt
-        << ", id=" << id
-        << ", test_case_id=" << test_case_id
-        << ", worker_id=" << worker_id
-        << ", timestamp=" << timestamp
-        ;
+    cucumber::messages::to_string(oss, "attempt=", attempt);
+    cucumber::messages::to_string(oss, ", id=", id);
+    cucumber::messages::to_string(oss, ", test_case_id=", test_case_id);
+    cucumber::messages::to_string(oss, ", worker_id=", worker_id);
+    cucumber::messages::to_string(oss, ", timestamp=", timestamp);
 
     return oss.str();
 }
@@ -24,13 +22,11 @@ test_case_started::to_string() const
 void
 test_case_started::to_json(json& j) const
 {
-    j = json{
-        { camelize("attempt"), attempt },
-        { camelize("id"), id },
-        { camelize("test_case_id"), test_case_id },
-        { camelize("worker_id"), worker_id },
-        { camelize("timestamp"), timestamp }
-    };
+    cucumber::messages::to_json(j, camelize("attempt"), attempt);
+    cucumber::messages::to_json(j, camelize("id"), id);
+    cucumber::messages::to_json(j, camelize("test_case_id"), test_case_id);
+    cucumber::messages::to_json(j, camelize("worker_id"), worker_id);
+    cucumber::messages::to_json(j, camelize("timestamp"), timestamp);
 }
 
 std::string
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/test_run_finished.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/test_run_finished.cpp
index 9c2f5611..f2c179e8 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/test_run_finished.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/test_run_finished.cpp
@@ -10,12 +10,10 @@ test_run_finished::to_string() const
 {
     std::ostringstream oss;
 
-    oss
-        << "message=" << message
-        << ", success=" << success
-        << ", timestamp=" << timestamp
-        << ", exception=" << exception
-        ;
+    cucumber::messages::to_string(oss, "message=", message);
+    cucumber::messages::to_string(oss, ", success=", success);
+    cucumber::messages::to_string(oss, ", timestamp=", timestamp);
+    cucumber::messages::to_string(oss, ", exception=", exception);
 
     return oss.str();
 }
@@ -23,12 +21,10 @@ test_run_finished::to_string() const
 void
 test_run_finished::to_json(json& j) const
 {
-    j = json{
-        { camelize("message"), message },
-        { camelize("success"), success },
-        { camelize("timestamp"), timestamp },
-        { camelize("exception"), exception }
-    };
+    cucumber::messages::to_json(j, camelize("message"), message);
+    cucumber::messages::to_json(j, camelize("success"), success);
+    cucumber::messages::to_json(j, camelize("timestamp"), timestamp);
+    cucumber::messages::to_json(j, camelize("exception"), exception);
 }
 
 std::string
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/test_run_started.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/test_run_started.cpp
index 31c097b9..0ce5fdd9 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/test_run_started.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/test_run_started.cpp
@@ -10,9 +10,7 @@ test_run_started::to_string() const
 {
     std::ostringstream oss;
 
-    oss
-        << "timestamp=" << timestamp
-        ;
+    cucumber::messages::to_string(oss, "timestamp=", timestamp);
 
     return oss.str();
 }
@@ -20,9 +18,7 @@ test_run_started::to_string() const
 void
 test_run_started::to_json(json& j) const
 {
-    j = json{
-        { camelize("timestamp"), timestamp }
-    };
+    cucumber::messages::to_json(j, camelize("timestamp"), timestamp);
 }
 
 std::string
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/test_step.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/test_step.cpp
index 766aed63..0c5f0afb 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/test_step.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/test_step.cpp
@@ -10,13 +10,11 @@ test_step::to_string() const
 {
     std::ostringstream oss;
 
-    oss
-        << "hook_id=" << hook_id
-        << ", id=" << id
-        << ", pickle_step_id=" << pickle_step_id
-        << ", step_definition_ids=" << step_definition_ids
-        << ", step_match_arguments_lists=" << step_match_arguments_lists
-        ;
+    cucumber::messages::to_string(oss, "hook_id=", hook_id);
+    cucumber::messages::to_string(oss, ", id=", id);
+    cucumber::messages::to_string(oss, ", pickle_step_id=", pickle_step_id);
+    cucumber::messages::to_string(oss, ", step_definition_ids=", step_definition_ids);
+    cucumber::messages::to_string(oss, ", step_match_arguments_lists=", step_match_arguments_lists);
 
     return oss.str();
 }
@@ -24,13 +22,11 @@ test_step::to_string() const
 void
 test_step::to_json(json& j) const
 {
-    j = json{
-        { camelize("hook_id"), hook_id },
-        { camelize("id"), id },
-        { camelize("pickle_step_id"), pickle_step_id },
-        { camelize("step_definition_ids"), step_definition_ids },
-        { camelize("step_match_arguments_lists"), step_match_arguments_lists }
-    };
+    cucumber::messages::to_json(j, camelize("hook_id"), hook_id);
+    cucumber::messages::to_json(j, camelize("id"), id);
+    cucumber::messages::to_json(j, camelize("pickle_step_id"), pickle_step_id);
+    cucumber::messages::to_json(j, camelize("step_definition_ids"), step_definition_ids);
+    cucumber::messages::to_json(j, camelize("step_match_arguments_lists"), step_match_arguments_lists);
 }
 
 std::string
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/test_step_finished.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/test_step_finished.cpp
index 696fc48f..5629a93c 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/test_step_finished.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/test_step_finished.cpp
@@ -10,12 +10,10 @@ test_step_finished::to_string() const
 {
     std::ostringstream oss;
 
-    oss
-        << "test_case_started_id=" << test_case_started_id
-        << ", test_step_id=" << test_step_id
-        << ", test_step_result=" << test_step_result
-        << ", timestamp=" << timestamp
-        ;
+    cucumber::messages::to_string(oss, "test_case_started_id=", test_case_started_id);
+    cucumber::messages::to_string(oss, ", test_step_id=", test_step_id);
+    cucumber::messages::to_string(oss, ", test_step_result=", test_step_result);
+    cucumber::messages::to_string(oss, ", timestamp=", timestamp);
 
     return oss.str();
 }
@@ -23,12 +21,10 @@ test_step_finished::to_string() const
 void
 test_step_finished::to_json(json& j) const
 {
-    j = json{
-        { camelize("test_case_started_id"), test_case_started_id },
-        { camelize("test_step_id"), test_step_id },
-        { camelize("test_step_result"), test_step_result },
-        { camelize("timestamp"), timestamp }
-    };
+    cucumber::messages::to_json(j, camelize("test_case_started_id"), test_case_started_id);
+    cucumber::messages::to_json(j, camelize("test_step_id"), test_step_id);
+    cucumber::messages::to_json(j, camelize("test_step_result"), test_step_result);
+    cucumber::messages::to_json(j, camelize("timestamp"), timestamp);
 }
 
 std::string
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/test_step_result.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/test_step_result.cpp
index 2e372e5a..f99d601c 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/test_step_result.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/test_step_result.cpp
@@ -10,12 +10,10 @@ test_step_result::to_string() const
 {
     std::ostringstream oss;
 
-    oss
-        << "duration=" << duration
-        << ", message=" << message
-        << ", status=" << status
-        << ", exception=" << exception
-        ;
+    cucumber::messages::to_string(oss, "duration=", duration);
+    cucumber::messages::to_string(oss, ", message=", message);
+    cucumber::messages::to_string(oss, ", status=", status);
+    cucumber::messages::to_string(oss, ", exception=", exception);
 
     return oss.str();
 }
@@ -23,12 +21,10 @@ test_step_result::to_string() const
 void
 test_step_result::to_json(json& j) const
 {
-    j = json{
-        { camelize("duration"), duration },
-        { camelize("message"), message },
-        { camelize("status"), status },
-        { camelize("exception"), exception }
-    };
+    cucumber::messages::to_json(j, camelize("duration"), duration);
+    cucumber::messages::to_json(j, camelize("message"), message);
+    cucumber::messages::to_json(j, camelize("status"), status);
+    cucumber::messages::to_json(j, camelize("exception"), exception);
 }
 
 std::string
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/test_step_started.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/test_step_started.cpp
index 8001e2ea..56a1ced0 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/test_step_started.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/test_step_started.cpp
@@ -10,11 +10,9 @@ test_step_started::to_string() const
 {
     std::ostringstream oss;
 
-    oss
-        << "test_case_started_id=" << test_case_started_id
-        << ", test_step_id=" << test_step_id
-        << ", timestamp=" << timestamp
-        ;
+    cucumber::messages::to_string(oss, "test_case_started_id=", test_case_started_id);
+    cucumber::messages::to_string(oss, ", test_step_id=", test_step_id);
+    cucumber::messages::to_string(oss, ", timestamp=", timestamp);
 
     return oss.str();
 }
@@ -22,11 +20,9 @@ test_step_started::to_string() const
 void
 test_step_started::to_json(json& j) const
 {
-    j = json{
-        { camelize("test_case_started_id"), test_case_started_id },
-        { camelize("test_step_id"), test_step_id },
-        { camelize("timestamp"), timestamp }
-    };
+    cucumber::messages::to_json(j, camelize("test_case_started_id"), test_case_started_id);
+    cucumber::messages::to_json(j, camelize("test_step_id"), test_step_id);
+    cucumber::messages::to_json(j, camelize("timestamp"), timestamp);
 }
 
 std::string
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/timestamp.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/timestamp.cpp
index be20edd5..d9d86a05 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/timestamp.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/timestamp.cpp
@@ -10,10 +10,8 @@ timestamp::to_string() const
 {
     std::ostringstream oss;
 
-    oss
-        << "seconds=" << seconds
-        << ", nanos=" << nanos
-        ;
+    cucumber::messages::to_string(oss, "seconds=", seconds);
+    cucumber::messages::to_string(oss, ", nanos=", nanos);
 
     return oss.str();
 }
@@ -21,10 +19,8 @@ timestamp::to_string() const
 void
 timestamp::to_json(json& j) const
 {
-    j = json{
-        { camelize("seconds"), seconds },
-        { camelize("nanos"), nanos }
-    };
+    cucumber::messages::to_json(j, camelize("seconds"), seconds);
+    cucumber::messages::to_json(j, camelize("nanos"), nanos);
 }
 
 std::string
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/undefined_parameter_type.cpp b/cpp/src/lib/cucumber-messages/cucumber/messages/undefined_parameter_type.cpp
index 73d2a712..5ef07f83 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/undefined_parameter_type.cpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/undefined_parameter_type.cpp
@@ -10,10 +10,8 @@ undefined_parameter_type::to_string() const
 {
     std::ostringstream oss;
 
-    oss
-        << "expression=" << expression
-        << ", name=" << name
-        ;
+    cucumber::messages::to_string(oss, "expression=", expression);
+    cucumber::messages::to_string(oss, ", name=", name);
 
     return oss.str();
 }
@@ -21,10 +19,8 @@ undefined_parameter_type::to_string() const
 void
 undefined_parameter_type::to_json(json& j) const
 {
-    j = json{
-        { camelize("expression"), expression },
-        { camelize("name"), name }
-    };
+    cucumber::messages::to_json(j, camelize("expression"), expression);
+    cucumber::messages::to_json(j, camelize("name"), name);
 }
 
 std::string
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/utils.hpp b/cpp/src/lib/cucumber-messages/cucumber/messages/utils.hpp
index faf9018b..7ca17434 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/utils.hpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/utils.hpp
@@ -1,26 +1,101 @@
 #pragma once
 
 #include <ostream>
+#include <sstream>
+#include <string_view>
 #include <vector>
+#include <optional>
+
+#include <nlohmann/json.hpp>
 
 namespace cucumber::messages {
 
+using json = nlohmann::json;
+
+namespace detail {
+
+template <
+    template <typename> class Container,
+    template <typename> class Other,
+    typename T
+>
+std::is_same<Container<T>, Other<T>>
+test_is_container(Other<T>*);
+
+template <
+    template <typename> class Container,
+    typename T
+>
+std::false_type test_is_container(T*);
+
+} // namespace detail
+
+template <
+    template <typename> class C,
+    typename T
+>
+using is_container = decltype(
+    detail::test_is_container<C>(static_cast<T*>(nullptr))
+);
+
+template <
+    template <typename> class C,
+    typename T
+>
+inline
+constexpr bool is_container_v = is_container<C, T>::value;
+
+template <
+    typename T,
+    typename Callable
+>
+void
+apply_if(const T& v, Callable&& cb)
+{
+    if constexpr (is_container_v<std::optional, T>) {
+        if (v) {
+            cb(*v);
+        }
+    } else {
+        cb(v);
+    }
+}
+
 std::string
 camelize(std::string s, bool initial_tail = true);
 
-template <typename Msg>
-std::ostream&
-operator<<(std::ostream& os, const std::vector<Msg>& msgs)
+template <typename P, typename T>
+void
+to_string(std::ostream& os, P&& prefix, T&& opt)
 {
-    os << '[';
+    apply_if(
+        opt,
+        [&](const auto& v) {
+            using vtype = std::remove_cvref_t<decltype(v)>;
 
-    for (std::size_t i = 0; i < msgs.size(); ++i) {
-        os << (i > 0 ? ", " : "") << msgs[i];
-    }
+            if constexpr (is_container_v<std::vector, vtype>) {
+                os << prefix << '[';
+
+                for (std::size_t i = 0; i < v.size(); ++i) {
+                    os << (i > 0 ? ", " : "") << v[i];
+                }
 
-    os << ']';
+                os << ']';
+            } else {
+                os << prefix << v;
+            }
+        }
+    );
+}
 
-    return os;
+template <typename K, typename T>
+void
+to_json(json& j, K&& key, T&& opt)
+{
+    apply_if(
+        opt,
+        [&](const auto& v) { j[key] = v; }
+    );
 }
 
 }
diff --git a/jsonschema/scripts/templates/cpp.hpp.erb b/jsonschema/scripts/templates/cpp.hpp.erb
index 34c6a17d..d20fec07 100644
--- a/jsonschema/scripts/templates/cpp.hpp.erb
+++ b/jsonschema/scripts/templates/cpp.hpp.erb
@@ -1,5 +1,7 @@
 <%- @schemas.each do |key, schema| -%>
-<% myclass = underscore(class_name(key)) %>
+<%
+    myclass = underscore(class_name(key))
+%>
 <%= myclass %>.hpp
 #pragma once
 
@@ -43,20 +45,25 @@ using json = nlohmann::json;
 
 struct <%= myclass %>
 {
-  <%- schema['properties'].each do |property_name, property| -%>
-    <%- type = underscore(type_for(class_name(key), property_name, property)) -%>
-    <%- if m = /std::vector<(?<vtype>.+)>/.match(type) -%>
-        <%- if !m['vtype'].start_with?("std::") -%>
-    std::vector<cucumber::messages::<%= m['vtype'] -%>> <%= underscore(property_name) %>;
-        <%- else -%>
-    <%= type -%> <%= underscore(property_name) %>;
-        <%- end -%>
-    <%- elsif !type.start_with?("std::") && type != "bool" -%>
-    cucumber::messages::<%= type -%> <%= underscore(property_name) %>;
-    <%- else -%>
-    <%= type -%> <%= underscore(property_name) %>;
+    <%-
+    schema['properties'].each do |property_name, property|
+        type = underscore(type_for(class_name(key), property_name, property))
+        ptype = type
+        pname = underscore(property_name)
+        prequired = (schema['required'] || []).index(property_name)
+        if m = /std::vector<(?<vtype>.+)>/.match(type)
+            if !m['vtype'].start_with?("std::")
+                ptype = "std::vector<cucumber::messages::" + m['vtype'] + ">"
+            end
+        elsif !type.start_with?("std::") && type != "bool"
+            ptype = "cucumber::messages::" + type
+        end
+        if !prequired
+            ptype = "std::optional<" + ptype + ">"
+        end
+    -%>
+    <%= ptype %> <%= pname %>;
     <%- end -%>
-  <%- end -%>
 
     std::string to_string() const;
 
@@ -83,12 +90,13 @@ std::string
 {
     std::ostringstream oss;
 
-    oss
-    <%- schema['properties'].each_with_index do |(property_name, property), index| -%>
-    <%- type = underscore(type_for(class_name(key), property_name, property)) -%>
-        << "<%= index == 0 ? '' : ', '%><%= underscore(property_name) %>=" << <%= underscore(property_name) %>
+    <%-
+    schema['properties'].each_with_index do |(property_name, property), index|
+        pname = underscore(property_name)
+        prefix = '"' + (index == 0 ? '' : ', ') + pname + '="'
+    -%>
+    cucumber::messages::to_string(oss, <%= prefix %>, <%= pname %>);
     <%- end -%>
-        ;
 
     return oss.str();
 }
@@ -99,17 +107,10 @@ void
     <%-
     exprs = []
     schema['properties'].each_with_index do |(property_name, property), index|
-        type = underscore(type_for(class_name(key), property_name, property))
-        expr = "{ "
-        expr += 'camelize("' + underscore(property_name) + '")'
-        expr += ", " + underscore(property_name)
-        expr += " }"
-        exprs.append(expr)
-    end
+        pname = underscore(property_name)
     -%>
-    j = json{
-        <%= exprs.join(",\n        ") %>
-    };
+    cucumber::messages::to_json(j, camelize("<%= pname %>"), <%= pname %>);
+    <%- end -%>
 }
 
 std::string

From 1a201da77c455b0de3c536e67deae7cc797382c2 Mon Sep 17 00:00:00 2001
From: Remy Chibois <remy@chybz.net>
Date: Sun, 14 May 2023 17:47:49 +0200
Subject: [PATCH 16/26] chore: added convenience global header

---
 cpp/include/cucumber/messages/all.hpp    | 56 ++++++++++++++++++++++++
 jsonschema/scripts/templates/cpp.hpp.erb | 11 ++++-
 2 files changed, 65 insertions(+), 2 deletions(-)
 create mode 100644 cpp/include/cucumber/messages/all.hpp

diff --git a/cpp/include/cucumber/messages/all.hpp b/cpp/include/cucumber/messages/all.hpp
new file mode 100644
index 00000000..4b4dc10c
--- /dev/null
+++ b/cpp/include/cucumber/messages/all.hpp
@@ -0,0 +1,56 @@
+#include <cucumber/messages/attachment.hpp>
+#include <cucumber/messages/duration.hpp>
+#include <cucumber/messages/envelope.hpp>
+#include <cucumber/messages/exception.hpp>
+#include <cucumber/messages/gherkin_document.hpp>
+#include <cucumber/messages/background.hpp>
+#include <cucumber/messages/comment.hpp>
+#include <cucumber/messages/data_table.hpp>
+#include <cucumber/messages/doc_string.hpp>
+#include <cucumber/messages/examples.hpp>
+#include <cucumber/messages/feature.hpp>
+#include <cucumber/messages/feature_child.hpp>
+#include <cucumber/messages/rule.hpp>
+#include <cucumber/messages/rule_child.hpp>
+#include <cucumber/messages/scenario.hpp>
+#include <cucumber/messages/step.hpp>
+#include <cucumber/messages/table_cell.hpp>
+#include <cucumber/messages/table_row.hpp>
+#include <cucumber/messages/tag.hpp>
+#include <cucumber/messages/hook.hpp>
+#include <cucumber/messages/location.hpp>
+#include <cucumber/messages/meta.hpp>
+#include <cucumber/messages/ci.hpp>
+#include <cucumber/messages/git.hpp>
+#include <cucumber/messages/product.hpp>
+#include <cucumber/messages/parameter_type.hpp>
+#include <cucumber/messages/parse_error.hpp>
+#include <cucumber/messages/pickle.hpp>
+#include <cucumber/messages/pickle_doc_string.hpp>
+#include <cucumber/messages/pickle_step.hpp>
+#include <cucumber/messages/pickle_step_argument.hpp>
+#include <cucumber/messages/pickle_table.hpp>
+#include <cucumber/messages/pickle_table_cell.hpp>
+#include <cucumber/messages/pickle_table_row.hpp>
+#include <cucumber/messages/pickle_tag.hpp>
+#include <cucumber/messages/source.hpp>
+#include <cucumber/messages/source_reference.hpp>
+#include <cucumber/messages/java_method.hpp>
+#include <cucumber/messages/java_stack_trace_element.hpp>
+#include <cucumber/messages/step_definition.hpp>
+#include <cucumber/messages/step_definition_pattern.hpp>
+#include <cucumber/messages/test_case.hpp>
+#include <cucumber/messages/group.hpp>
+#include <cucumber/messages/step_match_argument.hpp>
+#include <cucumber/messages/step_match_arguments_list.hpp>
+#include <cucumber/messages/test_step.hpp>
+#include <cucumber/messages/test_case_finished.hpp>
+#include <cucumber/messages/test_case_started.hpp>
+#include <cucumber/messages/test_run_finished.hpp>
+#include <cucumber/messages/test_run_started.hpp>
+#include <cucumber/messages/test_step_finished.hpp>
+#include <cucumber/messages/test_step_result.hpp>
+#include <cucumber/messages/test_step_started.hpp>
+#include <cucumber/messages/timestamp.hpp>
+#include <cucumber/messages/undefined_parameter_type.hpp>
+
diff --git a/jsonschema/scripts/templates/cpp.hpp.erb b/jsonschema/scripts/templates/cpp.hpp.erb
index d20fec07..f6a9e1aa 100644
--- a/jsonschema/scripts/templates/cpp.hpp.erb
+++ b/jsonschema/scripts/templates/cpp.hpp.erb
@@ -1,8 +1,15 @@
+all.hpp
 <%- @schemas.each do |key, schema| -%>
-<%
+<%-
+    myclass = underscore(class_name(key))
+-%>
+#include <cucumber/messages/<%= myclass %>.hpp>
+<%- end -%>
+<%- @schemas.each do |key, schema| -%>
+<%-
     myclass = underscore(class_name(key))
 %>
-<%= myclass %>.hpp
+<%= myclass -%>.hpp
 #pragma once
 
 #include <vector>

From 8fca8cdccccdbdbd34b6fc74a97de50bcb09c936 Mon Sep 17 00:00:00 2001
From: Remy Chibois <remy@chybz.net>
Date: Thu, 18 May 2023 17:56:02 +0200
Subject: [PATCH 17/26] chore: removed CMake 3.23+ dependency

---
 cpp/CMakeLists.txt                           |  6 +++++-
 cpp/src/lib/cucumber-messages/CMakeLists.txt | 10 ++--------
 2 files changed, 7 insertions(+), 9 deletions(-)

diff --git a/cpp/CMakeLists.txt b/cpp/CMakeLists.txt
index a6ccb113..49624cf1 100644
--- a/cpp/CMakeLists.txt
+++ b/cpp/CMakeLists.txt
@@ -15,12 +15,16 @@ install(
     TARGETS
         cucumber-messages
     EXPORT cucumber-messages-config
-    FILE_SET cucumber_messages_headers
     RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
     LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
     ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
 )
 
+install(
+    DIRECTORY "${CMAKE_SOURCE_DIR}/include/cucumber"
+    DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}/cucumber
+)
+
 install(
     EXPORT cucumber-messages-config
     FILE cucumber-messages-config.cmake
diff --git a/cpp/src/lib/cucumber-messages/CMakeLists.txt b/cpp/src/lib/cucumber-messages/CMakeLists.txt
index 8ee678d7..783b8720 100644
--- a/cpp/src/lib/cucumber-messages/CMakeLists.txt
+++ b/cpp/src/lib/cucumber-messages/CMakeLists.txt
@@ -9,20 +9,14 @@ file(GLOB_RECURSE CUCUMBER_MESSAGES_SOURCES ${CMAKE_CURRENT_SOURCE_DIR}/*.[ch]pp
 
 target_sources(
     cucumber-messages
-    PUBLIC
-    FILE_SET
-        "cucumber_messages_headers"
-        TYPE HEADERS
-        BASE_DIRS ${INC_DIR}
-        FILES
-        ${CUCUMBER_MESSAGES_HEADERS}
     PRIVATE
+        ${CUCUMBER_MESSAGES_HEADERS}
         ${CUCUMBER_MESSAGES_SOURCES}
 )
 
 target_include_directories(
     cucumber-messages
-    INTERFACE
+    PUBLIC
         $<BUILD_INTERFACE:${INC_DIR}>
         $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}/cucumber>
     PRIVATE

From 13b963fc9f3ebbb7d05634373166da52417cb48e Mon Sep 17 00:00:00 2001
From: Remy Chibois <remy@chybz.net>
Date: Thu, 18 May 2023 18:07:57 +0200
Subject: [PATCH 18/26] fix: installed include directories

---
 cpp/CMakeLists.txt | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/cpp/CMakeLists.txt b/cpp/CMakeLists.txt
index 49624cf1..630a9725 100644
--- a/cpp/CMakeLists.txt
+++ b/cpp/CMakeLists.txt
@@ -21,7 +21,7 @@ install(
 )
 
 install(
-    DIRECTORY "${CMAKE_SOURCE_DIR}/include/cucumber"
+    DIRECTORY "${CMAKE_SOURCE_DIR}/include/"
     DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}/cucumber
 )
 

From 5b6d9716a90c415f662ac1417d78a21e8b4ae6bb Mon Sep 17 00:00:00 2001
From: Remy Chibois <remy@chybz.net>
Date: Mon, 29 May 2023 10:44:44 +0200
Subject: [PATCH 19/26] chore: fixing json serialization for enums

---
 .../lib/cucumber-messages/cucumber/messages/utils.hpp  | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/utils.hpp b/cpp/src/lib/cucumber-messages/cucumber/messages/utils.hpp
index 7ca17434..16d2f215 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/utils.hpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/utils.hpp
@@ -94,7 +94,15 @@ to_json(json& j, K&& key, T&& opt)
 {
     apply_if(
         opt,
-        [&](const auto& v) { j[key] = v; }
+        [&](const auto& v) {
+            using vtype = std::remove_cvref_t<decltype(v)>;
+
+            if constexpr (std::is_enum_v<vtype>) {
+                j[key] = to_string(v);
+            } else {
+                j[key] = v;
+            }
+        }
     );
 }
 

From 622e12365643fe7a43ca77a8315d89919c3b4cec Mon Sep 17 00:00:00 2001
From: Remy Chibois <remy@chybz.net>
Date: Wed, 31 May 2023 11:08:18 +0200
Subject: [PATCH 20/26] chore: externalized nlohmann::json dependency, lowered
 C++ standard to 17

---
 cpp/.gitignore                                |     2 +
 cpp/CMakeLists.txt                            |     6 +-
 cpp/Makefile                                  |    25 +-
 cpp/cmake/toolchains/ext.cmake                |    18 +
 cpp/deps.txt                                  |     1 +
 cpp/include/nlohmann/json.hpp                 | 24674 ----------------
 cpp/scripts/build-ext                         |   122 +
 cpp/scripts/build-externals                   |   172 +
 cpp/src/lib/cucumber-messages/CMakeLists.txt  |     6 +
 .../cucumber/messages/utils.hpp               |     4 +-
 10 files changed, 351 insertions(+), 24679 deletions(-)
 create mode 100644 cpp/cmake/toolchains/ext.cmake
 create mode 100644 cpp/deps.txt
 delete mode 100644 cpp/include/nlohmann/json.hpp
 create mode 100755 cpp/scripts/build-ext
 create mode 100755 cpp/scripts/build-externals

diff --git a/cpp/.gitignore b/cpp/.gitignore
index b3fcb7ca..c99592be 100644
--- a/cpp/.gitignore
+++ b/cpp/.gitignore
@@ -1,3 +1,5 @@
 .configured
 .built
 build/
+ext/
+stage/
diff --git a/cpp/CMakeLists.txt b/cpp/CMakeLists.txt
index 630a9725..30290aa5 100644
--- a/cpp/CMakeLists.txt
+++ b/cpp/CMakeLists.txt
@@ -1,14 +1,16 @@
 cmake_minimum_required(VERSION 3.12 FATAL_ERROR)
 
-project(cucumber-messages VERSION 1.0.0 LANGUAGES C CXX)
+project(cucumber-messages VERSION 1.0.0 LANGUAGES CXX)
 
 include(GNUInstallDirs)
 
-set(CMAKE_CXX_STANDARD 20)
+set(CMAKE_CXX_STANDARD 17)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
 set(CMAKE_CXX_EXTENSIONS OFF)
 set(CMAKE_POSITION_INDEPENDENT_CODE ON)
 
+find_package(nlohmann_json CONFIG REQUIRED)
+
 add_subdirectory(src)
 
 install(
diff --git a/cpp/Makefile b/cpp/Makefile
index 34d8cb77..d8ea5dac 100644
--- a/cpp/Makefile
+++ b/cpp/Makefile
@@ -8,6 +8,9 @@ LIB_DIR = src/lib/cucumber-messages/cucumber/messages
 SOURCES = \
 	$(shell find $(INC_DIR) -name "*.[ch]pp") \
 	$(shell find $(LIB_DIR) -name "*.[ch]pp")
+
+HERE = $(shell pwd)
+CMAKE_BUILDROOT = $(HERE)/build/root
 CMAKELISTS = $(shell find . -name CMakeLists.txt)
 
 help: ## Show this help
@@ -42,9 +45,29 @@ clean: ## Remove automatically generated files and related artifacts
 clean-build:
 	rm -rf build .configured .built
 
+clean-deps:
+	rm -rf ext build/src build/root
+
+install-deps:
+	./scripts/build-externals deps.txt
+
 .configured: $(CMAKELISTS)
 	mkdir -p build
-	cmake -S . -B build && touch $@
+	cmake \
+	    -DCMAKE_PREFIX_PATH=$(CMAKE_BUILDROOT) \
+	    -DCMAKE_INSTALL_PREFIX=$(HERE)/stage \
+	    -S . \
+	    -B build \
+	    --toolchain cmake/toolchains/ext.cmake \
+	    && touch $@
+
+clean-configure:
+	rm -f .configured
+
+reconfigure: clean-configure .configured
+
+rebuild: reconfigure .built
 
 .built: .configured $(SOURCES)
 	cmake --build build --parallel && touch $@
+	cmake --install build
diff --git a/cpp/cmake/toolchains/ext.cmake b/cpp/cmake/toolchains/ext.cmake
new file mode 100644
index 00000000..192b99b9
--- /dev/null
+++ b/cpp/cmake/toolchains/ext.cmake
@@ -0,0 +1,18 @@
+#
+# CMake toolchain to be used when building external libraries
+#
+
+# use, i.e. don't skip the full RPATH for the build tree
+set(CMAKE_SKIP_BUILD_RPATH FALSE)
+
+find_program(CCACHE ccache)
+
+if(CCACHE)
+    set(CMAKE_C_COMPILER_LAUNCHER "${CCACHE}")
+    set(CMAKE_CXX_COMPILER_LAUNCHER "${CCACHE}")
+endif()
+
+if(DEFINED ENV{GHERKIN_DEBUG})
+    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -g -O0 -fsanitize=address")
+    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -g -O0 -fsanitize=address")
+endif()
diff --git a/cpp/deps.txt b/cpp/deps.txt
new file mode 100644
index 00000000..81debec6
--- /dev/null
+++ b/cpp/deps.txt
@@ -0,0 +1 @@
+https://github.com/nlohmann/json/archive/refs/tags/v3.11.2.zip -DJSON_BuildTests=OFF
diff --git a/cpp/include/nlohmann/json.hpp b/cpp/include/nlohmann/json.hpp
deleted file mode 100644
index dbbe6845..00000000
--- a/cpp/include/nlohmann/json.hpp
+++ /dev/null
@@ -1,24674 +0,0 @@
-//     __ _____ _____ _____
-//  __|  |   __|     |   | |  JSON for Modern C++
-// |  |  |__   |  |  | | | |  version 3.11.2
-// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
-//
-// SPDX-FileCopyrightText: 2013-2022 Niels Lohmann <https://nlohmann.me>
-// SPDX-License-Identifier: MIT
-
-/****************************************************************************\
- * Note on documentation: The source files contain links to the online      *
- * documentation of the public API at https://json.nlohmann.me. This URL    *
- * contains the most recent documentation and should also be applicable to  *
- * previous versions; documentation for deprecated functions is not         *
- * removed, but marked deprecated. See "Generate documentation" section in  *
- * file docs/README.md.                                                     *
-\****************************************************************************/
-
-#ifndef INCLUDE_NLOHMANN_JSON_HPP_
-#define INCLUDE_NLOHMANN_JSON_HPP_
-
-#include <algorithm> // all_of, find, for_each
-#include <cstddef> // nullptr_t, ptrdiff_t, size_t
-#include <functional> // hash, less
-#include <initializer_list> // initializer_list
-#ifndef JSON_NO_IO
-    #include <iosfwd> // istream, ostream
-#endif  // JSON_NO_IO
-#include <iterator> // random_access_iterator_tag
-#include <memory> // unique_ptr
-#include <string> // string, stoi, to_string
-#include <utility> // declval, forward, move, pair, swap
-#include <vector> // vector
-
-// #include <nlohmann/adl_serializer.hpp>
-//     __ _____ _____ _____
-//  __|  |   __|     |   | |  JSON for Modern C++
-// |  |  |__   |  |  | | | |  version 3.11.2
-// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
-//
-// SPDX-FileCopyrightText: 2013-2022 Niels Lohmann <https://nlohmann.me>
-// SPDX-License-Identifier: MIT
-
-
-
-#include <utility>
-
-// #include <nlohmann/detail/abi_macros.hpp>
-//     __ _____ _____ _____
-//  __|  |   __|     |   | |  JSON for Modern C++
-// |  |  |__   |  |  | | | |  version 3.11.2
-// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
-//
-// SPDX-FileCopyrightText: 2013-2022 Niels Lohmann <https://nlohmann.me>
-// SPDX-License-Identifier: MIT
-
-
-
-// This file contains all macro definitions affecting or depending on the ABI
-
-#ifndef JSON_SKIP_LIBRARY_VERSION_CHECK
-    #if defined(NLOHMANN_JSON_VERSION_MAJOR) && defined(NLOHMANN_JSON_VERSION_MINOR) && defined(NLOHMANN_JSON_VERSION_PATCH)
-        #if NLOHMANN_JSON_VERSION_MAJOR != 3 || NLOHMANN_JSON_VERSION_MINOR != 11 || NLOHMANN_JSON_VERSION_PATCH != 2
-            #warning "Already included a different version of the library!"
-        #endif
-    #endif
-#endif
-
-#define NLOHMANN_JSON_VERSION_MAJOR 3   // NOLINT(modernize-macro-to-enum)
-#define NLOHMANN_JSON_VERSION_MINOR 11  // NOLINT(modernize-macro-to-enum)
-#define NLOHMANN_JSON_VERSION_PATCH 2   // NOLINT(modernize-macro-to-enum)
-
-#ifndef JSON_DIAGNOSTICS
-    #define JSON_DIAGNOSTICS 0
-#endif
-
-#ifndef JSON_USE_LEGACY_DISCARDED_VALUE_COMPARISON
-    #define JSON_USE_LEGACY_DISCARDED_VALUE_COMPARISON 0
-#endif
-
-#if JSON_DIAGNOSTICS
-    #define NLOHMANN_JSON_ABI_TAG_DIAGNOSTICS _diag
-#else
-    #define NLOHMANN_JSON_ABI_TAG_DIAGNOSTICS
-#endif
-
-#if JSON_USE_LEGACY_DISCARDED_VALUE_COMPARISON
-    #define NLOHMANN_JSON_ABI_TAG_LEGACY_DISCARDED_VALUE_COMPARISON _ldvcmp
-#else
-    #define NLOHMANN_JSON_ABI_TAG_LEGACY_DISCARDED_VALUE_COMPARISON
-#endif
-
-#ifndef NLOHMANN_JSON_NAMESPACE_NO_VERSION
-    #define NLOHMANN_JSON_NAMESPACE_NO_VERSION 0
-#endif
-
-// Construct the namespace ABI tags component
-#define NLOHMANN_JSON_ABI_TAGS_CONCAT_EX(a, b) json_abi ## a ## b
-#define NLOHMANN_JSON_ABI_TAGS_CONCAT(a, b) \
-    NLOHMANN_JSON_ABI_TAGS_CONCAT_EX(a, b)
-
-#define NLOHMANN_JSON_ABI_TAGS                                       \
-    NLOHMANN_JSON_ABI_TAGS_CONCAT(                                   \
-            NLOHMANN_JSON_ABI_TAG_DIAGNOSTICS,                       \
-            NLOHMANN_JSON_ABI_TAG_LEGACY_DISCARDED_VALUE_COMPARISON)
-
-// Construct the namespace version component
-#define NLOHMANN_JSON_NAMESPACE_VERSION_CONCAT_EX(major, minor, patch) \
-    _v ## major ## _ ## minor ## _ ## patch
-#define NLOHMANN_JSON_NAMESPACE_VERSION_CONCAT(major, minor, patch) \
-    NLOHMANN_JSON_NAMESPACE_VERSION_CONCAT_EX(major, minor, patch)
-
-#if NLOHMANN_JSON_NAMESPACE_NO_VERSION
-#define NLOHMANN_JSON_NAMESPACE_VERSION
-#else
-#define NLOHMANN_JSON_NAMESPACE_VERSION                                 \
-    NLOHMANN_JSON_NAMESPACE_VERSION_CONCAT(NLOHMANN_JSON_VERSION_MAJOR, \
-                                           NLOHMANN_JSON_VERSION_MINOR, \
-                                           NLOHMANN_JSON_VERSION_PATCH)
-#endif
-
-// Combine namespace components
-#define NLOHMANN_JSON_NAMESPACE_CONCAT_EX(a, b) a ## b
-#define NLOHMANN_JSON_NAMESPACE_CONCAT(a, b) \
-    NLOHMANN_JSON_NAMESPACE_CONCAT_EX(a, b)
-
-#ifndef NLOHMANN_JSON_NAMESPACE
-#define NLOHMANN_JSON_NAMESPACE               \
-    nlohmann::NLOHMANN_JSON_NAMESPACE_CONCAT( \
-            NLOHMANN_JSON_ABI_TAGS,           \
-            NLOHMANN_JSON_NAMESPACE_VERSION)
-#endif
-
-#ifndef NLOHMANN_JSON_NAMESPACE_BEGIN
-#define NLOHMANN_JSON_NAMESPACE_BEGIN                \
-    namespace nlohmann                               \
-    {                                                \
-    inline namespace NLOHMANN_JSON_NAMESPACE_CONCAT( \
-                NLOHMANN_JSON_ABI_TAGS,              \
-                NLOHMANN_JSON_NAMESPACE_VERSION)     \
-    {
-#endif
-
-#ifndef NLOHMANN_JSON_NAMESPACE_END
-#define NLOHMANN_JSON_NAMESPACE_END                                     \
-    }  /* namespace (inline namespace) NOLINT(readability/namespace) */ \
-    }  // namespace nlohmann
-#endif
-
-// #include <nlohmann/detail/conversions/from_json.hpp>
-//     __ _____ _____ _____
-//  __|  |   __|     |   | |  JSON for Modern C++
-// |  |  |__   |  |  | | | |  version 3.11.2
-// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
-//
-// SPDX-FileCopyrightText: 2013-2022 Niels Lohmann <https://nlohmann.me>
-// SPDX-License-Identifier: MIT
-
-
-
-#include <algorithm> // transform
-#include <array> // array
-#include <forward_list> // forward_list
-#include <iterator> // inserter, front_inserter, end
-#include <map> // map
-#include <string> // string
-#include <tuple> // tuple, make_tuple
-#include <type_traits> // is_arithmetic, is_same, is_enum, underlying_type, is_convertible
-#include <unordered_map> // unordered_map
-#include <utility> // pair, declval
-#include <valarray> // valarray
-
-// #include <nlohmann/detail/exceptions.hpp>
-//     __ _____ _____ _____
-//  __|  |   __|     |   | |  JSON for Modern C++
-// |  |  |__   |  |  | | | |  version 3.11.2
-// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
-//
-// SPDX-FileCopyrightText: 2013-2022 Niels Lohmann <https://nlohmann.me>
-// SPDX-License-Identifier: MIT
-
-
-
-#include <cstddef> // nullptr_t
-#include <exception> // exception
-#if JSON_DIAGNOSTICS
-    #include <numeric> // accumulate
-#endif
-#include <stdexcept> // runtime_error
-#include <string> // to_string
-#include <vector> // vector
-
-// #include <nlohmann/detail/value_t.hpp>
-//     __ _____ _____ _____
-//  __|  |   __|     |   | |  JSON for Modern C++
-// |  |  |__   |  |  | | | |  version 3.11.2
-// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
-//
-// SPDX-FileCopyrightText: 2013-2022 Niels Lohmann <https://nlohmann.me>
-// SPDX-License-Identifier: MIT
-
-
-
-#include <array> // array
-#include <cstddef> // size_t
-#include <cstdint> // uint8_t
-#include <string> // string
-
-// #include <nlohmann/detail/macro_scope.hpp>
-//     __ _____ _____ _____
-//  __|  |   __|     |   | |  JSON for Modern C++
-// |  |  |__   |  |  | | | |  version 3.11.2
-// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
-//
-// SPDX-FileCopyrightText: 2013-2022 Niels Lohmann <https://nlohmann.me>
-// SPDX-License-Identifier: MIT
-
-
-
-#include <utility> // declval, pair
-// #include <nlohmann/detail/meta/detected.hpp>
-//     __ _____ _____ _____
-//  __|  |   __|     |   | |  JSON for Modern C++
-// |  |  |__   |  |  | | | |  version 3.11.2
-// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
-//
-// SPDX-FileCopyrightText: 2013-2022 Niels Lohmann <https://nlohmann.me>
-// SPDX-License-Identifier: MIT
-
-
-
-#include <type_traits>
-
-// #include <nlohmann/detail/meta/void_t.hpp>
-//     __ _____ _____ _____
-//  __|  |   __|     |   | |  JSON for Modern C++
-// |  |  |__   |  |  | | | |  version 3.11.2
-// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
-//
-// SPDX-FileCopyrightText: 2013-2022 Niels Lohmann <https://nlohmann.me>
-// SPDX-License-Identifier: MIT
-
-
-
-// #include <nlohmann/detail/abi_macros.hpp>
-
-
-NLOHMANN_JSON_NAMESPACE_BEGIN
-namespace detail
-{
-
-template<typename ...Ts> struct make_void
-{
-    using type = void;
-};
-template<typename ...Ts> using void_t = typename make_void<Ts...>::type;
-
-}  // namespace detail
-NLOHMANN_JSON_NAMESPACE_END
-
-
-NLOHMANN_JSON_NAMESPACE_BEGIN
-namespace detail
-{
-
-// https://en.cppreference.com/w/cpp/experimental/is_detected
-struct nonesuch
-{
-    nonesuch() = delete;
-    ~nonesuch() = delete;
-    nonesuch(nonesuch const&) = delete;
-    nonesuch(nonesuch const&&) = delete;
-    void operator=(nonesuch const&) = delete;
-    void operator=(nonesuch&&) = delete;
-};
-
-template<class Default,
-         class AlwaysVoid,
-         template<class...> class Op,
-         class... Args>
-struct detector
-{
-    using value_t = std::false_type;
-    using type = Default;
-};
-
-template<class Default, template<class...> class Op, class... Args>
-struct detector<Default, void_t<Op<Args...>>, Op, Args...>
-{
-    using value_t = std::true_type;
-    using type = Op<Args...>;
-};
-
-template<template<class...> class Op, class... Args>
-using is_detected = typename detector<nonesuch, void, Op, Args...>::value_t;
-
-template<template<class...> class Op, class... Args>
-struct is_detected_lazy : is_detected<Op, Args...> { };
-
-template<template<class...> class Op, class... Args>
-using detected_t = typename detector<nonesuch, void, Op, Args...>::type;
-
-template<class Default, template<class...> class Op, class... Args>
-using detected_or = detector<Default, void, Op, Args...>;
-
-template<class Default, template<class...> class Op, class... Args>
-using detected_or_t = typename detected_or<Default, Op, Args...>::type;
-
-template<class Expected, template<class...> class Op, class... Args>
-using is_detected_exact = std::is_same<Expected, detected_t<Op, Args...>>;
-
-template<class To, template<class...> class Op, class... Args>
-using is_detected_convertible =
-    std::is_convertible<detected_t<Op, Args...>, To>;
-
-}  // namespace detail
-NLOHMANN_JSON_NAMESPACE_END
-
-// #include <nlohmann/thirdparty/hedley/hedley.hpp>
-
-
-//     __ _____ _____ _____
-//  __|  |   __|     |   | |  JSON for Modern C++
-// |  |  |__   |  |  | | | |  version 3.11.2
-// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
-//
-// SPDX-FileCopyrightText: 2013-2022 Niels Lohmann <https://nlohmann.me>
-// SPDX-FileCopyrightText: 2016-2021 Evan Nemerson <evan@nemerson.com>
-// SPDX-License-Identifier: MIT
-
-/* Hedley - https://nemequ.github.io/hedley
- * Created by Evan Nemerson <evan@nemerson.com>
- */
-
-#if !defined(JSON_HEDLEY_VERSION) || (JSON_HEDLEY_VERSION < 15)
-#if defined(JSON_HEDLEY_VERSION)
-    #undef JSON_HEDLEY_VERSION
-#endif
-#define JSON_HEDLEY_VERSION 15
-
-#if defined(JSON_HEDLEY_STRINGIFY_EX)
-    #undef JSON_HEDLEY_STRINGIFY_EX
-#endif
-#define JSON_HEDLEY_STRINGIFY_EX(x) #x
-
-#if defined(JSON_HEDLEY_STRINGIFY)
-    #undef JSON_HEDLEY_STRINGIFY
-#endif
-#define JSON_HEDLEY_STRINGIFY(x) JSON_HEDLEY_STRINGIFY_EX(x)
-
-#if defined(JSON_HEDLEY_CONCAT_EX)
-    #undef JSON_HEDLEY_CONCAT_EX
-#endif
-#define JSON_HEDLEY_CONCAT_EX(a,b) a##b
-
-#if defined(JSON_HEDLEY_CONCAT)
-    #undef JSON_HEDLEY_CONCAT
-#endif
-#define JSON_HEDLEY_CONCAT(a,b) JSON_HEDLEY_CONCAT_EX(a,b)
-
-#if defined(JSON_HEDLEY_CONCAT3_EX)
-    #undef JSON_HEDLEY_CONCAT3_EX
-#endif
-#define JSON_HEDLEY_CONCAT3_EX(a,b,c) a##b##c
-
-#if defined(JSON_HEDLEY_CONCAT3)
-    #undef JSON_HEDLEY_CONCAT3
-#endif
-#define JSON_HEDLEY_CONCAT3(a,b,c) JSON_HEDLEY_CONCAT3_EX(a,b,c)
-
-#if defined(JSON_HEDLEY_VERSION_ENCODE)
-    #undef JSON_HEDLEY_VERSION_ENCODE
-#endif
-#define JSON_HEDLEY_VERSION_ENCODE(major,minor,revision) (((major) * 1000000) + ((minor) * 1000) + (revision))
-
-#if defined(JSON_HEDLEY_VERSION_DECODE_MAJOR)
-    #undef JSON_HEDLEY_VERSION_DECODE_MAJOR
-#endif
-#define JSON_HEDLEY_VERSION_DECODE_MAJOR(version) ((version) / 1000000)
-
-#if defined(JSON_HEDLEY_VERSION_DECODE_MINOR)
-    #undef JSON_HEDLEY_VERSION_DECODE_MINOR
-#endif
-#define JSON_HEDLEY_VERSION_DECODE_MINOR(version) (((version) % 1000000) / 1000)
-
-#if defined(JSON_HEDLEY_VERSION_DECODE_REVISION)
-    #undef JSON_HEDLEY_VERSION_DECODE_REVISION
-#endif
-#define JSON_HEDLEY_VERSION_DECODE_REVISION(version) ((version) % 1000)
-
-#if defined(JSON_HEDLEY_GNUC_VERSION)
-    #undef JSON_HEDLEY_GNUC_VERSION
-#endif
-#if defined(__GNUC__) && defined(__GNUC_PATCHLEVEL__)
-    #define JSON_HEDLEY_GNUC_VERSION JSON_HEDLEY_VERSION_ENCODE(__GNUC__, __GNUC_MINOR__, __GNUC_PATCHLEVEL__)
-#elif defined(__GNUC__)
-    #define JSON_HEDLEY_GNUC_VERSION JSON_HEDLEY_VERSION_ENCODE(__GNUC__, __GNUC_MINOR__, 0)
-#endif
-
-#if defined(JSON_HEDLEY_GNUC_VERSION_CHECK)
-    #undef JSON_HEDLEY_GNUC_VERSION_CHECK
-#endif
-#if defined(JSON_HEDLEY_GNUC_VERSION)
-    #define JSON_HEDLEY_GNUC_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_GNUC_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
-#else
-    #define JSON_HEDLEY_GNUC_VERSION_CHECK(major,minor,patch) (0)
-#endif
-
-#if defined(JSON_HEDLEY_MSVC_VERSION)
-    #undef JSON_HEDLEY_MSVC_VERSION
-#endif
-#if defined(_MSC_FULL_VER) && (_MSC_FULL_VER >= 140000000) && !defined(__ICL)
-    #define JSON_HEDLEY_MSVC_VERSION JSON_HEDLEY_VERSION_ENCODE(_MSC_FULL_VER / 10000000, (_MSC_FULL_VER % 10000000) / 100000, (_MSC_FULL_VER % 100000) / 100)
-#elif defined(_MSC_FULL_VER) && !defined(__ICL)
-    #define JSON_HEDLEY_MSVC_VERSION JSON_HEDLEY_VERSION_ENCODE(_MSC_FULL_VER / 1000000, (_MSC_FULL_VER % 1000000) / 10000, (_MSC_FULL_VER % 10000) / 10)
-#elif defined(_MSC_VER) && !defined(__ICL)
-    #define JSON_HEDLEY_MSVC_VERSION JSON_HEDLEY_VERSION_ENCODE(_MSC_VER / 100, _MSC_VER % 100, 0)
-#endif
-
-#if defined(JSON_HEDLEY_MSVC_VERSION_CHECK)
-    #undef JSON_HEDLEY_MSVC_VERSION_CHECK
-#endif
-#if !defined(JSON_HEDLEY_MSVC_VERSION)
-    #define JSON_HEDLEY_MSVC_VERSION_CHECK(major,minor,patch) (0)
-#elif defined(_MSC_VER) && (_MSC_VER >= 1400)
-    #define JSON_HEDLEY_MSVC_VERSION_CHECK(major,minor,patch) (_MSC_FULL_VER >= ((major * 10000000) + (minor * 100000) + (patch)))
-#elif defined(_MSC_VER) && (_MSC_VER >= 1200)
-    #define JSON_HEDLEY_MSVC_VERSION_CHECK(major,minor,patch) (_MSC_FULL_VER >= ((major * 1000000) + (minor * 10000) + (patch)))
-#else
-    #define JSON_HEDLEY_MSVC_VERSION_CHECK(major,minor,patch) (_MSC_VER >= ((major * 100) + (minor)))
-#endif
-
-#if defined(JSON_HEDLEY_INTEL_VERSION)
-    #undef JSON_HEDLEY_INTEL_VERSION
-#endif
-#if defined(__INTEL_COMPILER) && defined(__INTEL_COMPILER_UPDATE) && !defined(__ICL)
-    #define JSON_HEDLEY_INTEL_VERSION JSON_HEDLEY_VERSION_ENCODE(__INTEL_COMPILER / 100, __INTEL_COMPILER % 100, __INTEL_COMPILER_UPDATE)
-#elif defined(__INTEL_COMPILER) && !defined(__ICL)
-    #define JSON_HEDLEY_INTEL_VERSION JSON_HEDLEY_VERSION_ENCODE(__INTEL_COMPILER / 100, __INTEL_COMPILER % 100, 0)
-#endif
-
-#if defined(JSON_HEDLEY_INTEL_VERSION_CHECK)
-    #undef JSON_HEDLEY_INTEL_VERSION_CHECK
-#endif
-#if defined(JSON_HEDLEY_INTEL_VERSION)
-    #define JSON_HEDLEY_INTEL_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_INTEL_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
-#else
-    #define JSON_HEDLEY_INTEL_VERSION_CHECK(major,minor,patch) (0)
-#endif
-
-#if defined(JSON_HEDLEY_INTEL_CL_VERSION)
-    #undef JSON_HEDLEY_INTEL_CL_VERSION
-#endif
-#if defined(__INTEL_COMPILER) && defined(__INTEL_COMPILER_UPDATE) && defined(__ICL)
-    #define JSON_HEDLEY_INTEL_CL_VERSION JSON_HEDLEY_VERSION_ENCODE(__INTEL_COMPILER, __INTEL_COMPILER_UPDATE, 0)
-#endif
-
-#if defined(JSON_HEDLEY_INTEL_CL_VERSION_CHECK)
-    #undef JSON_HEDLEY_INTEL_CL_VERSION_CHECK
-#endif
-#if defined(JSON_HEDLEY_INTEL_CL_VERSION)
-    #define JSON_HEDLEY_INTEL_CL_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_INTEL_CL_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
-#else
-    #define JSON_HEDLEY_INTEL_CL_VERSION_CHECK(major,minor,patch) (0)
-#endif
-
-#if defined(JSON_HEDLEY_PGI_VERSION)
-    #undef JSON_HEDLEY_PGI_VERSION
-#endif
-#if defined(__PGI) && defined(__PGIC__) && defined(__PGIC_MINOR__) && defined(__PGIC_PATCHLEVEL__)
-    #define JSON_HEDLEY_PGI_VERSION JSON_HEDLEY_VERSION_ENCODE(__PGIC__, __PGIC_MINOR__, __PGIC_PATCHLEVEL__)
-#endif
-
-#if defined(JSON_HEDLEY_PGI_VERSION_CHECK)
-    #undef JSON_HEDLEY_PGI_VERSION_CHECK
-#endif
-#if defined(JSON_HEDLEY_PGI_VERSION)
-    #define JSON_HEDLEY_PGI_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_PGI_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
-#else
-    #define JSON_HEDLEY_PGI_VERSION_CHECK(major,minor,patch) (0)
-#endif
-
-#if defined(JSON_HEDLEY_SUNPRO_VERSION)
-    #undef JSON_HEDLEY_SUNPRO_VERSION
-#endif
-#if defined(__SUNPRO_C) && (__SUNPRO_C > 0x1000)
-    #define JSON_HEDLEY_SUNPRO_VERSION JSON_HEDLEY_VERSION_ENCODE((((__SUNPRO_C >> 16) & 0xf) * 10) + ((__SUNPRO_C >> 12) & 0xf), (((__SUNPRO_C >> 8) & 0xf) * 10) + ((__SUNPRO_C >> 4) & 0xf), (__SUNPRO_C & 0xf) * 10)
-#elif defined(__SUNPRO_C)
-    #define JSON_HEDLEY_SUNPRO_VERSION JSON_HEDLEY_VERSION_ENCODE((__SUNPRO_C >> 8) & 0xf, (__SUNPRO_C >> 4) & 0xf, (__SUNPRO_C) & 0xf)
-#elif defined(__SUNPRO_CC) && (__SUNPRO_CC > 0x1000)
-    #define JSON_HEDLEY_SUNPRO_VERSION JSON_HEDLEY_VERSION_ENCODE((((__SUNPRO_CC >> 16) & 0xf) * 10) + ((__SUNPRO_CC >> 12) & 0xf), (((__SUNPRO_CC >> 8) & 0xf) * 10) + ((__SUNPRO_CC >> 4) & 0xf), (__SUNPRO_CC & 0xf) * 10)
-#elif defined(__SUNPRO_CC)
-    #define JSON_HEDLEY_SUNPRO_VERSION JSON_HEDLEY_VERSION_ENCODE((__SUNPRO_CC >> 8) & 0xf, (__SUNPRO_CC >> 4) & 0xf, (__SUNPRO_CC) & 0xf)
-#endif
-
-#if defined(JSON_HEDLEY_SUNPRO_VERSION_CHECK)
-    #undef JSON_HEDLEY_SUNPRO_VERSION_CHECK
-#endif
-#if defined(JSON_HEDLEY_SUNPRO_VERSION)
-    #define JSON_HEDLEY_SUNPRO_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_SUNPRO_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
-#else
-    #define JSON_HEDLEY_SUNPRO_VERSION_CHECK(major,minor,patch) (0)
-#endif
-
-#if defined(JSON_HEDLEY_EMSCRIPTEN_VERSION)
-    #undef JSON_HEDLEY_EMSCRIPTEN_VERSION
-#endif
-#if defined(__EMSCRIPTEN__)
-    #define JSON_HEDLEY_EMSCRIPTEN_VERSION JSON_HEDLEY_VERSION_ENCODE(__EMSCRIPTEN_major__, __EMSCRIPTEN_minor__, __EMSCRIPTEN_tiny__)
-#endif
-
-#if defined(JSON_HEDLEY_EMSCRIPTEN_VERSION_CHECK)
-    #undef JSON_HEDLEY_EMSCRIPTEN_VERSION_CHECK
-#endif
-#if defined(JSON_HEDLEY_EMSCRIPTEN_VERSION)
-    #define JSON_HEDLEY_EMSCRIPTEN_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_EMSCRIPTEN_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
-#else
-    #define JSON_HEDLEY_EMSCRIPTEN_VERSION_CHECK(major,minor,patch) (0)
-#endif
-
-#if defined(JSON_HEDLEY_ARM_VERSION)
-    #undef JSON_HEDLEY_ARM_VERSION
-#endif
-#if defined(__CC_ARM) && defined(__ARMCOMPILER_VERSION)
-    #define JSON_HEDLEY_ARM_VERSION JSON_HEDLEY_VERSION_ENCODE(__ARMCOMPILER_VERSION / 1000000, (__ARMCOMPILER_VERSION % 1000000) / 10000, (__ARMCOMPILER_VERSION % 10000) / 100)
-#elif defined(__CC_ARM) && defined(__ARMCC_VERSION)
-    #define JSON_HEDLEY_ARM_VERSION JSON_HEDLEY_VERSION_ENCODE(__ARMCC_VERSION / 1000000, (__ARMCC_VERSION % 1000000) / 10000, (__ARMCC_VERSION % 10000) / 100)
-#endif
-
-#if defined(JSON_HEDLEY_ARM_VERSION_CHECK)
-    #undef JSON_HEDLEY_ARM_VERSION_CHECK
-#endif
-#if defined(JSON_HEDLEY_ARM_VERSION)
-    #define JSON_HEDLEY_ARM_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_ARM_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
-#else
-    #define JSON_HEDLEY_ARM_VERSION_CHECK(major,minor,patch) (0)
-#endif
-
-#if defined(JSON_HEDLEY_IBM_VERSION)
-    #undef JSON_HEDLEY_IBM_VERSION
-#endif
-#if defined(__ibmxl__)
-    #define JSON_HEDLEY_IBM_VERSION JSON_HEDLEY_VERSION_ENCODE(__ibmxl_version__, __ibmxl_release__, __ibmxl_modification__)
-#elif defined(__xlC__) && defined(__xlC_ver__)
-    #define JSON_HEDLEY_IBM_VERSION JSON_HEDLEY_VERSION_ENCODE(__xlC__ >> 8, __xlC__ & 0xff, (__xlC_ver__ >> 8) & 0xff)
-#elif defined(__xlC__)
-    #define JSON_HEDLEY_IBM_VERSION JSON_HEDLEY_VERSION_ENCODE(__xlC__ >> 8, __xlC__ & 0xff, 0)
-#endif
-
-#if defined(JSON_HEDLEY_IBM_VERSION_CHECK)
-    #undef JSON_HEDLEY_IBM_VERSION_CHECK
-#endif
-#if defined(JSON_HEDLEY_IBM_VERSION)
-    #define JSON_HEDLEY_IBM_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_IBM_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
-#else
-    #define JSON_HEDLEY_IBM_VERSION_CHECK(major,minor,patch) (0)
-#endif
-
-#if defined(JSON_HEDLEY_TI_VERSION)
-    #undef JSON_HEDLEY_TI_VERSION
-#endif
-#if \
-    defined(__TI_COMPILER_VERSION__) && \
-    ( \
-      defined(__TMS470__) || defined(__TI_ARM__) || \
-      defined(__MSP430__) || \
-      defined(__TMS320C2000__) \
-    )
-#if (__TI_COMPILER_VERSION__ >= 16000000)
-    #define JSON_HEDLEY_TI_VERSION JSON_HEDLEY_VERSION_ENCODE(__TI_COMPILER_VERSION__ / 1000000, (__TI_COMPILER_VERSION__ % 1000000) / 1000, (__TI_COMPILER_VERSION__ % 1000))
-#endif
-#endif
-
-#if defined(JSON_HEDLEY_TI_VERSION_CHECK)
-    #undef JSON_HEDLEY_TI_VERSION_CHECK
-#endif
-#if defined(JSON_HEDLEY_TI_VERSION)
-    #define JSON_HEDLEY_TI_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_TI_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
-#else
-    #define JSON_HEDLEY_TI_VERSION_CHECK(major,minor,patch) (0)
-#endif
-
-#if defined(JSON_HEDLEY_TI_CL2000_VERSION)
-    #undef JSON_HEDLEY_TI_CL2000_VERSION
-#endif
-#if defined(__TI_COMPILER_VERSION__) && defined(__TMS320C2000__)
-    #define JSON_HEDLEY_TI_CL2000_VERSION JSON_HEDLEY_VERSION_ENCODE(__TI_COMPILER_VERSION__ / 1000000, (__TI_COMPILER_VERSION__ % 1000000) / 1000, (__TI_COMPILER_VERSION__ % 1000))
-#endif
-
-#if defined(JSON_HEDLEY_TI_CL2000_VERSION_CHECK)
-    #undef JSON_HEDLEY_TI_CL2000_VERSION_CHECK
-#endif
-#if defined(JSON_HEDLEY_TI_CL2000_VERSION)
-    #define JSON_HEDLEY_TI_CL2000_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_TI_CL2000_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
-#else
-    #define JSON_HEDLEY_TI_CL2000_VERSION_CHECK(major,minor,patch) (0)
-#endif
-
-#if defined(JSON_HEDLEY_TI_CL430_VERSION)
-    #undef JSON_HEDLEY_TI_CL430_VERSION
-#endif
-#if defined(__TI_COMPILER_VERSION__) && defined(__MSP430__)
-    #define JSON_HEDLEY_TI_CL430_VERSION JSON_HEDLEY_VERSION_ENCODE(__TI_COMPILER_VERSION__ / 1000000, (__TI_COMPILER_VERSION__ % 1000000) / 1000, (__TI_COMPILER_VERSION__ % 1000))
-#endif
-
-#if defined(JSON_HEDLEY_TI_CL430_VERSION_CHECK)
-    #undef JSON_HEDLEY_TI_CL430_VERSION_CHECK
-#endif
-#if defined(JSON_HEDLEY_TI_CL430_VERSION)
-    #define JSON_HEDLEY_TI_CL430_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_TI_CL430_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
-#else
-    #define JSON_HEDLEY_TI_CL430_VERSION_CHECK(major,minor,patch) (0)
-#endif
-
-#if defined(JSON_HEDLEY_TI_ARMCL_VERSION)
-    #undef JSON_HEDLEY_TI_ARMCL_VERSION
-#endif
-#if defined(__TI_COMPILER_VERSION__) && (defined(__TMS470__) || defined(__TI_ARM__))
-    #define JSON_HEDLEY_TI_ARMCL_VERSION JSON_HEDLEY_VERSION_ENCODE(__TI_COMPILER_VERSION__ / 1000000, (__TI_COMPILER_VERSION__ % 1000000) / 1000, (__TI_COMPILER_VERSION__ % 1000))
-#endif
-
-#if defined(JSON_HEDLEY_TI_ARMCL_VERSION_CHECK)
-    #undef JSON_HEDLEY_TI_ARMCL_VERSION_CHECK
-#endif
-#if defined(JSON_HEDLEY_TI_ARMCL_VERSION)
-    #define JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_TI_ARMCL_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
-#else
-    #define JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(major,minor,patch) (0)
-#endif
-
-#if defined(JSON_HEDLEY_TI_CL6X_VERSION)
-    #undef JSON_HEDLEY_TI_CL6X_VERSION
-#endif
-#if defined(__TI_COMPILER_VERSION__) && defined(__TMS320C6X__)
-    #define JSON_HEDLEY_TI_CL6X_VERSION JSON_HEDLEY_VERSION_ENCODE(__TI_COMPILER_VERSION__ / 1000000, (__TI_COMPILER_VERSION__ % 1000000) / 1000, (__TI_COMPILER_VERSION__ % 1000))
-#endif
-
-#if defined(JSON_HEDLEY_TI_CL6X_VERSION_CHECK)
-    #undef JSON_HEDLEY_TI_CL6X_VERSION_CHECK
-#endif
-#if defined(JSON_HEDLEY_TI_CL6X_VERSION)
-    #define JSON_HEDLEY_TI_CL6X_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_TI_CL6X_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
-#else
-    #define JSON_HEDLEY_TI_CL6X_VERSION_CHECK(major,minor,patch) (0)
-#endif
-
-#if defined(JSON_HEDLEY_TI_CL7X_VERSION)
-    #undef JSON_HEDLEY_TI_CL7X_VERSION
-#endif
-#if defined(__TI_COMPILER_VERSION__) && defined(__C7000__)
-    #define JSON_HEDLEY_TI_CL7X_VERSION JSON_HEDLEY_VERSION_ENCODE(__TI_COMPILER_VERSION__ / 1000000, (__TI_COMPILER_VERSION__ % 1000000) / 1000, (__TI_COMPILER_VERSION__ % 1000))
-#endif
-
-#if defined(JSON_HEDLEY_TI_CL7X_VERSION_CHECK)
-    #undef JSON_HEDLEY_TI_CL7X_VERSION_CHECK
-#endif
-#if defined(JSON_HEDLEY_TI_CL7X_VERSION)
-    #define JSON_HEDLEY_TI_CL7X_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_TI_CL7X_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
-#else
-    #define JSON_HEDLEY_TI_CL7X_VERSION_CHECK(major,minor,patch) (0)
-#endif
-
-#if defined(JSON_HEDLEY_TI_CLPRU_VERSION)
-    #undef JSON_HEDLEY_TI_CLPRU_VERSION
-#endif
-#if defined(__TI_COMPILER_VERSION__) && defined(__PRU__)
-    #define JSON_HEDLEY_TI_CLPRU_VERSION JSON_HEDLEY_VERSION_ENCODE(__TI_COMPILER_VERSION__ / 1000000, (__TI_COMPILER_VERSION__ % 1000000) / 1000, (__TI_COMPILER_VERSION__ % 1000))
-#endif
-
-#if defined(JSON_HEDLEY_TI_CLPRU_VERSION_CHECK)
-    #undef JSON_HEDLEY_TI_CLPRU_VERSION_CHECK
-#endif
-#if defined(JSON_HEDLEY_TI_CLPRU_VERSION)
-    #define JSON_HEDLEY_TI_CLPRU_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_TI_CLPRU_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
-#else
-    #define JSON_HEDLEY_TI_CLPRU_VERSION_CHECK(major,minor,patch) (0)
-#endif
-
-#if defined(JSON_HEDLEY_CRAY_VERSION)
-    #undef JSON_HEDLEY_CRAY_VERSION
-#endif
-#if defined(_CRAYC)
-    #if defined(_RELEASE_PATCHLEVEL)
-        #define JSON_HEDLEY_CRAY_VERSION JSON_HEDLEY_VERSION_ENCODE(_RELEASE_MAJOR, _RELEASE_MINOR, _RELEASE_PATCHLEVEL)
-    #else
-        #define JSON_HEDLEY_CRAY_VERSION JSON_HEDLEY_VERSION_ENCODE(_RELEASE_MAJOR, _RELEASE_MINOR, 0)
-    #endif
-#endif
-
-#if defined(JSON_HEDLEY_CRAY_VERSION_CHECK)
-    #undef JSON_HEDLEY_CRAY_VERSION_CHECK
-#endif
-#if defined(JSON_HEDLEY_CRAY_VERSION)
-    #define JSON_HEDLEY_CRAY_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_CRAY_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
-#else
-    #define JSON_HEDLEY_CRAY_VERSION_CHECK(major,minor,patch) (0)
-#endif
-
-#if defined(JSON_HEDLEY_IAR_VERSION)
-    #undef JSON_HEDLEY_IAR_VERSION
-#endif
-#if defined(__IAR_SYSTEMS_ICC__)
-    #if __VER__ > 1000
-        #define JSON_HEDLEY_IAR_VERSION JSON_HEDLEY_VERSION_ENCODE((__VER__ / 1000000), ((__VER__ / 1000) % 1000), (__VER__ % 1000))
-    #else
-        #define JSON_HEDLEY_IAR_VERSION JSON_HEDLEY_VERSION_ENCODE(__VER__ / 100, __VER__ % 100, 0)
-    #endif
-#endif
-
-#if defined(JSON_HEDLEY_IAR_VERSION_CHECK)
-    #undef JSON_HEDLEY_IAR_VERSION_CHECK
-#endif
-#if defined(JSON_HEDLEY_IAR_VERSION)
-    #define JSON_HEDLEY_IAR_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_IAR_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
-#else
-    #define JSON_HEDLEY_IAR_VERSION_CHECK(major,minor,patch) (0)
-#endif
-
-#if defined(JSON_HEDLEY_TINYC_VERSION)
-    #undef JSON_HEDLEY_TINYC_VERSION
-#endif
-#if defined(__TINYC__)
-    #define JSON_HEDLEY_TINYC_VERSION JSON_HEDLEY_VERSION_ENCODE(__TINYC__ / 1000, (__TINYC__ / 100) % 10, __TINYC__ % 100)
-#endif
-
-#if defined(JSON_HEDLEY_TINYC_VERSION_CHECK)
-    #undef JSON_HEDLEY_TINYC_VERSION_CHECK
-#endif
-#if defined(JSON_HEDLEY_TINYC_VERSION)
-    #define JSON_HEDLEY_TINYC_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_TINYC_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
-#else
-    #define JSON_HEDLEY_TINYC_VERSION_CHECK(major,minor,patch) (0)
-#endif
-
-#if defined(JSON_HEDLEY_DMC_VERSION)
-    #undef JSON_HEDLEY_DMC_VERSION
-#endif
-#if defined(__DMC__)
-    #define JSON_HEDLEY_DMC_VERSION JSON_HEDLEY_VERSION_ENCODE(__DMC__ >> 8, (__DMC__ >> 4) & 0xf, __DMC__ & 0xf)
-#endif
-
-#if defined(JSON_HEDLEY_DMC_VERSION_CHECK)
-    #undef JSON_HEDLEY_DMC_VERSION_CHECK
-#endif
-#if defined(JSON_HEDLEY_DMC_VERSION)
-    #define JSON_HEDLEY_DMC_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_DMC_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
-#else
-    #define JSON_HEDLEY_DMC_VERSION_CHECK(major,minor,patch) (0)
-#endif
-
-#if defined(JSON_HEDLEY_COMPCERT_VERSION)
-    #undef JSON_HEDLEY_COMPCERT_VERSION
-#endif
-#if defined(__COMPCERT_VERSION__)
-    #define JSON_HEDLEY_COMPCERT_VERSION JSON_HEDLEY_VERSION_ENCODE(__COMPCERT_VERSION__ / 10000, (__COMPCERT_VERSION__ / 100) % 100, __COMPCERT_VERSION__ % 100)
-#endif
-
-#if defined(JSON_HEDLEY_COMPCERT_VERSION_CHECK)
-    #undef JSON_HEDLEY_COMPCERT_VERSION_CHECK
-#endif
-#if defined(JSON_HEDLEY_COMPCERT_VERSION)
-    #define JSON_HEDLEY_COMPCERT_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_COMPCERT_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
-#else
-    #define JSON_HEDLEY_COMPCERT_VERSION_CHECK(major,minor,patch) (0)
-#endif
-
-#if defined(JSON_HEDLEY_PELLES_VERSION)
-    #undef JSON_HEDLEY_PELLES_VERSION
-#endif
-#if defined(__POCC__)
-    #define JSON_HEDLEY_PELLES_VERSION JSON_HEDLEY_VERSION_ENCODE(__POCC__ / 100, __POCC__ % 100, 0)
-#endif
-
-#if defined(JSON_HEDLEY_PELLES_VERSION_CHECK)
-    #undef JSON_HEDLEY_PELLES_VERSION_CHECK
-#endif
-#if defined(JSON_HEDLEY_PELLES_VERSION)
-    #define JSON_HEDLEY_PELLES_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_PELLES_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
-#else
-    #define JSON_HEDLEY_PELLES_VERSION_CHECK(major,minor,patch) (0)
-#endif
-
-#if defined(JSON_HEDLEY_MCST_LCC_VERSION)
-    #undef JSON_HEDLEY_MCST_LCC_VERSION
-#endif
-#if defined(__LCC__) && defined(__LCC_MINOR__)
-    #define JSON_HEDLEY_MCST_LCC_VERSION JSON_HEDLEY_VERSION_ENCODE(__LCC__ / 100, __LCC__ % 100, __LCC_MINOR__)
-#endif
-
-#if defined(JSON_HEDLEY_MCST_LCC_VERSION_CHECK)
-    #undef JSON_HEDLEY_MCST_LCC_VERSION_CHECK
-#endif
-#if defined(JSON_HEDLEY_MCST_LCC_VERSION)
-    #define JSON_HEDLEY_MCST_LCC_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_MCST_LCC_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
-#else
-    #define JSON_HEDLEY_MCST_LCC_VERSION_CHECK(major,minor,patch) (0)
-#endif
-
-#if defined(JSON_HEDLEY_GCC_VERSION)
-    #undef JSON_HEDLEY_GCC_VERSION
-#endif
-#if \
-    defined(JSON_HEDLEY_GNUC_VERSION) && \
-    !defined(__clang__) && \
-    !defined(JSON_HEDLEY_INTEL_VERSION) && \
-    !defined(JSON_HEDLEY_PGI_VERSION) && \
-    !defined(JSON_HEDLEY_ARM_VERSION) && \
-    !defined(JSON_HEDLEY_CRAY_VERSION) && \
-    !defined(JSON_HEDLEY_TI_VERSION) && \
-    !defined(JSON_HEDLEY_TI_ARMCL_VERSION) && \
-    !defined(JSON_HEDLEY_TI_CL430_VERSION) && \
-    !defined(JSON_HEDLEY_TI_CL2000_VERSION) && \
-    !defined(JSON_HEDLEY_TI_CL6X_VERSION) && \
-    !defined(JSON_HEDLEY_TI_CL7X_VERSION) && \
-    !defined(JSON_HEDLEY_TI_CLPRU_VERSION) && \
-    !defined(__COMPCERT__) && \
-    !defined(JSON_HEDLEY_MCST_LCC_VERSION)
-    #define JSON_HEDLEY_GCC_VERSION JSON_HEDLEY_GNUC_VERSION
-#endif
-
-#if defined(JSON_HEDLEY_GCC_VERSION_CHECK)
-    #undef JSON_HEDLEY_GCC_VERSION_CHECK
-#endif
-#if defined(JSON_HEDLEY_GCC_VERSION)
-    #define JSON_HEDLEY_GCC_VERSION_CHECK(major,minor,patch) (JSON_HEDLEY_GCC_VERSION >= JSON_HEDLEY_VERSION_ENCODE(major, minor, patch))
-#else
-    #define JSON_HEDLEY_GCC_VERSION_CHECK(major,minor,patch) (0)
-#endif
-
-#if defined(JSON_HEDLEY_HAS_ATTRIBUTE)
-    #undef JSON_HEDLEY_HAS_ATTRIBUTE
-#endif
-#if \
-  defined(__has_attribute) && \
-  ( \
-    (!defined(JSON_HEDLEY_IAR_VERSION) || JSON_HEDLEY_IAR_VERSION_CHECK(8,5,9)) \
-  )
-#  define JSON_HEDLEY_HAS_ATTRIBUTE(attribute) __has_attribute(attribute)
-#else
-#  define JSON_HEDLEY_HAS_ATTRIBUTE(attribute) (0)
-#endif
-
-#if defined(JSON_HEDLEY_GNUC_HAS_ATTRIBUTE)
-    #undef JSON_HEDLEY_GNUC_HAS_ATTRIBUTE
-#endif
-#if defined(__has_attribute)
-    #define JSON_HEDLEY_GNUC_HAS_ATTRIBUTE(attribute,major,minor,patch) JSON_HEDLEY_HAS_ATTRIBUTE(attribute)
-#else
-    #define JSON_HEDLEY_GNUC_HAS_ATTRIBUTE(attribute,major,minor,patch) JSON_HEDLEY_GNUC_VERSION_CHECK(major,minor,patch)
-#endif
-
-#if defined(JSON_HEDLEY_GCC_HAS_ATTRIBUTE)
-    #undef JSON_HEDLEY_GCC_HAS_ATTRIBUTE
-#endif
-#if defined(__has_attribute)
-    #define JSON_HEDLEY_GCC_HAS_ATTRIBUTE(attribute,major,minor,patch) JSON_HEDLEY_HAS_ATTRIBUTE(attribute)
-#else
-    #define JSON_HEDLEY_GCC_HAS_ATTRIBUTE(attribute,major,minor,patch) JSON_HEDLEY_GCC_VERSION_CHECK(major,minor,patch)
-#endif
-
-#if defined(JSON_HEDLEY_HAS_CPP_ATTRIBUTE)
-    #undef JSON_HEDLEY_HAS_CPP_ATTRIBUTE
-#endif
-#if \
-    defined(__has_cpp_attribute) && \
-    defined(__cplusplus) && \
-    (!defined(JSON_HEDLEY_SUNPRO_VERSION) || JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,15,0))
-    #define JSON_HEDLEY_HAS_CPP_ATTRIBUTE(attribute) __has_cpp_attribute(attribute)
-#else
-    #define JSON_HEDLEY_HAS_CPP_ATTRIBUTE(attribute) (0)
-#endif
-
-#if defined(JSON_HEDLEY_HAS_CPP_ATTRIBUTE_NS)
-    #undef JSON_HEDLEY_HAS_CPP_ATTRIBUTE_NS
-#endif
-#if !defined(__cplusplus) || !defined(__has_cpp_attribute)
-    #define JSON_HEDLEY_HAS_CPP_ATTRIBUTE_NS(ns,attribute) (0)
-#elif \
-    !defined(JSON_HEDLEY_PGI_VERSION) && \
-    !defined(JSON_HEDLEY_IAR_VERSION) && \
-    (!defined(JSON_HEDLEY_SUNPRO_VERSION) || JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,15,0)) && \
-    (!defined(JSON_HEDLEY_MSVC_VERSION) || JSON_HEDLEY_MSVC_VERSION_CHECK(19,20,0))
-    #define JSON_HEDLEY_HAS_CPP_ATTRIBUTE_NS(ns,attribute) JSON_HEDLEY_HAS_CPP_ATTRIBUTE(ns::attribute)
-#else
-    #define JSON_HEDLEY_HAS_CPP_ATTRIBUTE_NS(ns,attribute) (0)
-#endif
-
-#if defined(JSON_HEDLEY_GNUC_HAS_CPP_ATTRIBUTE)
-    #undef JSON_HEDLEY_GNUC_HAS_CPP_ATTRIBUTE
-#endif
-#if defined(__has_cpp_attribute) && defined(__cplusplus)
-    #define JSON_HEDLEY_GNUC_HAS_CPP_ATTRIBUTE(attribute,major,minor,patch) __has_cpp_attribute(attribute)
-#else
-    #define JSON_HEDLEY_GNUC_HAS_CPP_ATTRIBUTE(attribute,major,minor,patch) JSON_HEDLEY_GNUC_VERSION_CHECK(major,minor,patch)
-#endif
-
-#if defined(JSON_HEDLEY_GCC_HAS_CPP_ATTRIBUTE)
-    #undef JSON_HEDLEY_GCC_HAS_CPP_ATTRIBUTE
-#endif
-#if defined(__has_cpp_attribute) && defined(__cplusplus)
-    #define JSON_HEDLEY_GCC_HAS_CPP_ATTRIBUTE(attribute,major,minor,patch) __has_cpp_attribute(attribute)
-#else
-    #define JSON_HEDLEY_GCC_HAS_CPP_ATTRIBUTE(attribute,major,minor,patch) JSON_HEDLEY_GCC_VERSION_CHECK(major,minor,patch)
-#endif
-
-#if defined(JSON_HEDLEY_HAS_BUILTIN)
-    #undef JSON_HEDLEY_HAS_BUILTIN
-#endif
-#if defined(__has_builtin)
-    #define JSON_HEDLEY_HAS_BUILTIN(builtin) __has_builtin(builtin)
-#else
-    #define JSON_HEDLEY_HAS_BUILTIN(builtin) (0)
-#endif
-
-#if defined(JSON_HEDLEY_GNUC_HAS_BUILTIN)
-    #undef JSON_HEDLEY_GNUC_HAS_BUILTIN
-#endif
-#if defined(__has_builtin)
-    #define JSON_HEDLEY_GNUC_HAS_BUILTIN(builtin,major,minor,patch) __has_builtin(builtin)
-#else
-    #define JSON_HEDLEY_GNUC_HAS_BUILTIN(builtin,major,minor,patch) JSON_HEDLEY_GNUC_VERSION_CHECK(major,minor,patch)
-#endif
-
-#if defined(JSON_HEDLEY_GCC_HAS_BUILTIN)
-    #undef JSON_HEDLEY_GCC_HAS_BUILTIN
-#endif
-#if defined(__has_builtin)
-    #define JSON_HEDLEY_GCC_HAS_BUILTIN(builtin,major,minor,patch) __has_builtin(builtin)
-#else
-    #define JSON_HEDLEY_GCC_HAS_BUILTIN(builtin,major,minor,patch) JSON_HEDLEY_GCC_VERSION_CHECK(major,minor,patch)
-#endif
-
-#if defined(JSON_HEDLEY_HAS_FEATURE)
-    #undef JSON_HEDLEY_HAS_FEATURE
-#endif
-#if defined(__has_feature)
-    #define JSON_HEDLEY_HAS_FEATURE(feature) __has_feature(feature)
-#else
-    #define JSON_HEDLEY_HAS_FEATURE(feature) (0)
-#endif
-
-#if defined(JSON_HEDLEY_GNUC_HAS_FEATURE)
-    #undef JSON_HEDLEY_GNUC_HAS_FEATURE
-#endif
-#if defined(__has_feature)
-    #define JSON_HEDLEY_GNUC_HAS_FEATURE(feature,major,minor,patch) __has_feature(feature)
-#else
-    #define JSON_HEDLEY_GNUC_HAS_FEATURE(feature,major,minor,patch) JSON_HEDLEY_GNUC_VERSION_CHECK(major,minor,patch)
-#endif
-
-#if defined(JSON_HEDLEY_GCC_HAS_FEATURE)
-    #undef JSON_HEDLEY_GCC_HAS_FEATURE
-#endif
-#if defined(__has_feature)
-    #define JSON_HEDLEY_GCC_HAS_FEATURE(feature,major,minor,patch) __has_feature(feature)
-#else
-    #define JSON_HEDLEY_GCC_HAS_FEATURE(feature,major,minor,patch) JSON_HEDLEY_GCC_VERSION_CHECK(major,minor,patch)
-#endif
-
-#if defined(JSON_HEDLEY_HAS_EXTENSION)
-    #undef JSON_HEDLEY_HAS_EXTENSION
-#endif
-#if defined(__has_extension)
-    #define JSON_HEDLEY_HAS_EXTENSION(extension) __has_extension(extension)
-#else
-    #define JSON_HEDLEY_HAS_EXTENSION(extension) (0)
-#endif
-
-#if defined(JSON_HEDLEY_GNUC_HAS_EXTENSION)
-    #undef JSON_HEDLEY_GNUC_HAS_EXTENSION
-#endif
-#if defined(__has_extension)
-    #define JSON_HEDLEY_GNUC_HAS_EXTENSION(extension,major,minor,patch) __has_extension(extension)
-#else
-    #define JSON_HEDLEY_GNUC_HAS_EXTENSION(extension,major,minor,patch) JSON_HEDLEY_GNUC_VERSION_CHECK(major,minor,patch)
-#endif
-
-#if defined(JSON_HEDLEY_GCC_HAS_EXTENSION)
-    #undef JSON_HEDLEY_GCC_HAS_EXTENSION
-#endif
-#if defined(__has_extension)
-    #define JSON_HEDLEY_GCC_HAS_EXTENSION(extension,major,minor,patch) __has_extension(extension)
-#else
-    #define JSON_HEDLEY_GCC_HAS_EXTENSION(extension,major,minor,patch) JSON_HEDLEY_GCC_VERSION_CHECK(major,minor,patch)
-#endif
-
-#if defined(JSON_HEDLEY_HAS_DECLSPEC_ATTRIBUTE)
-    #undef JSON_HEDLEY_HAS_DECLSPEC_ATTRIBUTE
-#endif
-#if defined(__has_declspec_attribute)
-    #define JSON_HEDLEY_HAS_DECLSPEC_ATTRIBUTE(attribute) __has_declspec_attribute(attribute)
-#else
-    #define JSON_HEDLEY_HAS_DECLSPEC_ATTRIBUTE(attribute) (0)
-#endif
-
-#if defined(JSON_HEDLEY_GNUC_HAS_DECLSPEC_ATTRIBUTE)
-    #undef JSON_HEDLEY_GNUC_HAS_DECLSPEC_ATTRIBUTE
-#endif
-#if defined(__has_declspec_attribute)
-    #define JSON_HEDLEY_GNUC_HAS_DECLSPEC_ATTRIBUTE(attribute,major,minor,patch) __has_declspec_attribute(attribute)
-#else
-    #define JSON_HEDLEY_GNUC_HAS_DECLSPEC_ATTRIBUTE(attribute,major,minor,patch) JSON_HEDLEY_GNUC_VERSION_CHECK(major,minor,patch)
-#endif
-
-#if defined(JSON_HEDLEY_GCC_HAS_DECLSPEC_ATTRIBUTE)
-    #undef JSON_HEDLEY_GCC_HAS_DECLSPEC_ATTRIBUTE
-#endif
-#if defined(__has_declspec_attribute)
-    #define JSON_HEDLEY_GCC_HAS_DECLSPEC_ATTRIBUTE(attribute,major,minor,patch) __has_declspec_attribute(attribute)
-#else
-    #define JSON_HEDLEY_GCC_HAS_DECLSPEC_ATTRIBUTE(attribute,major,minor,patch) JSON_HEDLEY_GCC_VERSION_CHECK(major,minor,patch)
-#endif
-
-#if defined(JSON_HEDLEY_HAS_WARNING)
-    #undef JSON_HEDLEY_HAS_WARNING
-#endif
-#if defined(__has_warning)
-    #define JSON_HEDLEY_HAS_WARNING(warning) __has_warning(warning)
-#else
-    #define JSON_HEDLEY_HAS_WARNING(warning) (0)
-#endif
-
-#if defined(JSON_HEDLEY_GNUC_HAS_WARNING)
-    #undef JSON_HEDLEY_GNUC_HAS_WARNING
-#endif
-#if defined(__has_warning)
-    #define JSON_HEDLEY_GNUC_HAS_WARNING(warning,major,minor,patch) __has_warning(warning)
-#else
-    #define JSON_HEDLEY_GNUC_HAS_WARNING(warning,major,minor,patch) JSON_HEDLEY_GNUC_VERSION_CHECK(major,minor,patch)
-#endif
-
-#if defined(JSON_HEDLEY_GCC_HAS_WARNING)
-    #undef JSON_HEDLEY_GCC_HAS_WARNING
-#endif
-#if defined(__has_warning)
-    #define JSON_HEDLEY_GCC_HAS_WARNING(warning,major,minor,patch) __has_warning(warning)
-#else
-    #define JSON_HEDLEY_GCC_HAS_WARNING(warning,major,minor,patch) JSON_HEDLEY_GCC_VERSION_CHECK(major,minor,patch)
-#endif
-
-#if \
-    (defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L)) || \
-    defined(__clang__) || \
-    JSON_HEDLEY_GCC_VERSION_CHECK(3,0,0) || \
-    JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0) || \
-    JSON_HEDLEY_IAR_VERSION_CHECK(8,0,0) || \
-    JSON_HEDLEY_PGI_VERSION_CHECK(18,4,0) || \
-    JSON_HEDLEY_ARM_VERSION_CHECK(4,1,0) || \
-    JSON_HEDLEY_TI_VERSION_CHECK(15,12,0) || \
-    JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(4,7,0) || \
-    JSON_HEDLEY_TI_CL430_VERSION_CHECK(2,0,1) || \
-    JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,1,0) || \
-    JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,0,0) || \
-    JSON_HEDLEY_TI_CL7X_VERSION_CHECK(1,2,0) || \
-    JSON_HEDLEY_TI_CLPRU_VERSION_CHECK(2,1,0) || \
-    JSON_HEDLEY_CRAY_VERSION_CHECK(5,0,0) || \
-    JSON_HEDLEY_TINYC_VERSION_CHECK(0,9,17) || \
-    JSON_HEDLEY_SUNPRO_VERSION_CHECK(8,0,0) || \
-    (JSON_HEDLEY_IBM_VERSION_CHECK(10,1,0) && defined(__C99_PRAGMA_OPERATOR))
-    #define JSON_HEDLEY_PRAGMA(value) _Pragma(#value)
-#elif JSON_HEDLEY_MSVC_VERSION_CHECK(15,0,0)
-    #define JSON_HEDLEY_PRAGMA(value) __pragma(value)
-#else
-    #define JSON_HEDLEY_PRAGMA(value)
-#endif
-
-#if defined(JSON_HEDLEY_DIAGNOSTIC_PUSH)
-    #undef JSON_HEDLEY_DIAGNOSTIC_PUSH
-#endif
-#if defined(JSON_HEDLEY_DIAGNOSTIC_POP)
-    #undef JSON_HEDLEY_DIAGNOSTIC_POP
-#endif
-#if defined(__clang__)
-    #define JSON_HEDLEY_DIAGNOSTIC_PUSH _Pragma("clang diagnostic push")
-    #define JSON_HEDLEY_DIAGNOSTIC_POP _Pragma("clang diagnostic pop")
-#elif JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0)
-    #define JSON_HEDLEY_DIAGNOSTIC_PUSH _Pragma("warning(push)")
-    #define JSON_HEDLEY_DIAGNOSTIC_POP _Pragma("warning(pop)")
-#elif JSON_HEDLEY_GCC_VERSION_CHECK(4,6,0)
-    #define JSON_HEDLEY_DIAGNOSTIC_PUSH _Pragma("GCC diagnostic push")
-    #define JSON_HEDLEY_DIAGNOSTIC_POP _Pragma("GCC diagnostic pop")
-#elif \
-    JSON_HEDLEY_MSVC_VERSION_CHECK(15,0,0) || \
-    JSON_HEDLEY_INTEL_CL_VERSION_CHECK(2021,1,0)
-    #define JSON_HEDLEY_DIAGNOSTIC_PUSH __pragma(warning(push))
-    #define JSON_HEDLEY_DIAGNOSTIC_POP __pragma(warning(pop))
-#elif JSON_HEDLEY_ARM_VERSION_CHECK(5,6,0)
-    #define JSON_HEDLEY_DIAGNOSTIC_PUSH _Pragma("push")
-    #define JSON_HEDLEY_DIAGNOSTIC_POP _Pragma("pop")
-#elif \
-    JSON_HEDLEY_TI_VERSION_CHECK(15,12,0) || \
-    JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(5,2,0) || \
-    JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,4,0) || \
-    JSON_HEDLEY_TI_CL6X_VERSION_CHECK(8,1,0) || \
-    JSON_HEDLEY_TI_CL7X_VERSION_CHECK(1,2,0) || \
-    JSON_HEDLEY_TI_CLPRU_VERSION_CHECK(2,1,0)
-    #define JSON_HEDLEY_DIAGNOSTIC_PUSH _Pragma("diag_push")
-    #define JSON_HEDLEY_DIAGNOSTIC_POP _Pragma("diag_pop")
-#elif JSON_HEDLEY_PELLES_VERSION_CHECK(2,90,0)
-    #define JSON_HEDLEY_DIAGNOSTIC_PUSH _Pragma("warning(push)")
-    #define JSON_HEDLEY_DIAGNOSTIC_POP _Pragma("warning(pop)")
-#else
-    #define JSON_HEDLEY_DIAGNOSTIC_PUSH
-    #define JSON_HEDLEY_DIAGNOSTIC_POP
-#endif
-
-/* JSON_HEDLEY_DIAGNOSTIC_DISABLE_CPP98_COMPAT_WRAP_ is for
-   HEDLEY INTERNAL USE ONLY.  API subject to change without notice. */
-#if defined(JSON_HEDLEY_DIAGNOSTIC_DISABLE_CPP98_COMPAT_WRAP_)
-    #undef JSON_HEDLEY_DIAGNOSTIC_DISABLE_CPP98_COMPAT_WRAP_
-#endif
-#if defined(__cplusplus)
-#  if JSON_HEDLEY_HAS_WARNING("-Wc++98-compat")
-#    if JSON_HEDLEY_HAS_WARNING("-Wc++17-extensions")
-#      if JSON_HEDLEY_HAS_WARNING("-Wc++1z-extensions")
-#        define JSON_HEDLEY_DIAGNOSTIC_DISABLE_CPP98_COMPAT_WRAP_(xpr) \
-    JSON_HEDLEY_DIAGNOSTIC_PUSH \
-    _Pragma("clang diagnostic ignored \"-Wc++98-compat\"") \
-    _Pragma("clang diagnostic ignored \"-Wc++17-extensions\"") \
-    _Pragma("clang diagnostic ignored \"-Wc++1z-extensions\"") \
-    xpr \
-    JSON_HEDLEY_DIAGNOSTIC_POP
-#      else
-#        define JSON_HEDLEY_DIAGNOSTIC_DISABLE_CPP98_COMPAT_WRAP_(xpr) \
-    JSON_HEDLEY_DIAGNOSTIC_PUSH \
-    _Pragma("clang diagnostic ignored \"-Wc++98-compat\"") \
-    _Pragma("clang diagnostic ignored \"-Wc++17-extensions\"") \
-    xpr \
-    JSON_HEDLEY_DIAGNOSTIC_POP
-#      endif
-#    else
-#      define JSON_HEDLEY_DIAGNOSTIC_DISABLE_CPP98_COMPAT_WRAP_(xpr) \
-    JSON_HEDLEY_DIAGNOSTIC_PUSH \
-    _Pragma("clang diagnostic ignored \"-Wc++98-compat\"") \
-    xpr \
-    JSON_HEDLEY_DIAGNOSTIC_POP
-#    endif
-#  endif
-#endif
-#if !defined(JSON_HEDLEY_DIAGNOSTIC_DISABLE_CPP98_COMPAT_WRAP_)
-    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_CPP98_COMPAT_WRAP_(x) x
-#endif
-
-#if defined(JSON_HEDLEY_CONST_CAST)
-    #undef JSON_HEDLEY_CONST_CAST
-#endif
-#if defined(__cplusplus)
-#  define JSON_HEDLEY_CONST_CAST(T, expr) (const_cast<T>(expr))
-#elif \
-  JSON_HEDLEY_HAS_WARNING("-Wcast-qual") || \
-  JSON_HEDLEY_GCC_VERSION_CHECK(4,6,0) || \
-  JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0)
-#  define JSON_HEDLEY_CONST_CAST(T, expr) (__extension__ ({ \
-        JSON_HEDLEY_DIAGNOSTIC_PUSH \
-        JSON_HEDLEY_DIAGNOSTIC_DISABLE_CAST_QUAL \
-        ((T) (expr)); \
-        JSON_HEDLEY_DIAGNOSTIC_POP \
-    }))
-#else
-#  define JSON_HEDLEY_CONST_CAST(T, expr) ((T) (expr))
-#endif
-
-#if defined(JSON_HEDLEY_REINTERPRET_CAST)
-    #undef JSON_HEDLEY_REINTERPRET_CAST
-#endif
-#if defined(__cplusplus)
-    #define JSON_HEDLEY_REINTERPRET_CAST(T, expr) (reinterpret_cast<T>(expr))
-#else
-    #define JSON_HEDLEY_REINTERPRET_CAST(T, expr) ((T) (expr))
-#endif
-
-#if defined(JSON_HEDLEY_STATIC_CAST)
-    #undef JSON_HEDLEY_STATIC_CAST
-#endif
-#if defined(__cplusplus)
-    #define JSON_HEDLEY_STATIC_CAST(T, expr) (static_cast<T>(expr))
-#else
-    #define JSON_HEDLEY_STATIC_CAST(T, expr) ((T) (expr))
-#endif
-
-#if defined(JSON_HEDLEY_CPP_CAST)
-    #undef JSON_HEDLEY_CPP_CAST
-#endif
-#if defined(__cplusplus)
-#  if JSON_HEDLEY_HAS_WARNING("-Wold-style-cast")
-#    define JSON_HEDLEY_CPP_CAST(T, expr) \
-    JSON_HEDLEY_DIAGNOSTIC_PUSH \
-    _Pragma("clang diagnostic ignored \"-Wold-style-cast\"") \
-    ((T) (expr)) \
-    JSON_HEDLEY_DIAGNOSTIC_POP
-#  elif JSON_HEDLEY_IAR_VERSION_CHECK(8,3,0)
-#    define JSON_HEDLEY_CPP_CAST(T, expr) \
-    JSON_HEDLEY_DIAGNOSTIC_PUSH \
-    _Pragma("diag_suppress=Pe137") \
-    JSON_HEDLEY_DIAGNOSTIC_POP
-#  else
-#    define JSON_HEDLEY_CPP_CAST(T, expr) ((T) (expr))
-#  endif
-#else
-#  define JSON_HEDLEY_CPP_CAST(T, expr) (expr)
-#endif
-
-#if defined(JSON_HEDLEY_DIAGNOSTIC_DISABLE_DEPRECATED)
-    #undef JSON_HEDLEY_DIAGNOSTIC_DISABLE_DEPRECATED
-#endif
-#if JSON_HEDLEY_HAS_WARNING("-Wdeprecated-declarations")
-    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_DEPRECATED _Pragma("clang diagnostic ignored \"-Wdeprecated-declarations\"")
-#elif JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0)
-    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_DEPRECATED _Pragma("warning(disable:1478 1786)")
-#elif JSON_HEDLEY_INTEL_CL_VERSION_CHECK(2021,1,0)
-    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_DEPRECATED __pragma(warning(disable:1478 1786))
-#elif JSON_HEDLEY_PGI_VERSION_CHECK(20,7,0)
-    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_DEPRECATED _Pragma("diag_suppress 1215,1216,1444,1445")
-#elif JSON_HEDLEY_PGI_VERSION_CHECK(17,10,0)
-    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_DEPRECATED _Pragma("diag_suppress 1215,1444")
-#elif JSON_HEDLEY_GCC_VERSION_CHECK(4,3,0)
-    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_DEPRECATED _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"")
-#elif JSON_HEDLEY_MSVC_VERSION_CHECK(15,0,0)
-    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_DEPRECATED __pragma(warning(disable:4996))
-#elif JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10)
-    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_DEPRECATED _Pragma("diag_suppress 1215,1444")
-#elif \
-    JSON_HEDLEY_TI_VERSION_CHECK(15,12,0) || \
-    (JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(4,8,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
-    JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(5,2,0) || \
-    (JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,0,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
-    JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,4,0) || \
-    (JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,0,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
-    JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,3,0) || \
-    (JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,2,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
-    JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,5,0) || \
-    JSON_HEDLEY_TI_CL7X_VERSION_CHECK(1,2,0) || \
-    JSON_HEDLEY_TI_CLPRU_VERSION_CHECK(2,1,0)
-    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_DEPRECATED _Pragma("diag_suppress 1291,1718")
-#elif JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,13,0) && !defined(__cplusplus)
-    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_DEPRECATED _Pragma("error_messages(off,E_DEPRECATED_ATT,E_DEPRECATED_ATT_MESS)")
-#elif JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,13,0) && defined(__cplusplus)
-    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_DEPRECATED _Pragma("error_messages(off,symdeprecated,symdeprecated2)")
-#elif JSON_HEDLEY_IAR_VERSION_CHECK(8,0,0)
-    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_DEPRECATED _Pragma("diag_suppress=Pe1444,Pe1215")
-#elif JSON_HEDLEY_PELLES_VERSION_CHECK(2,90,0)
-    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_DEPRECATED _Pragma("warn(disable:2241)")
-#else
-    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_DEPRECATED
-#endif
-
-#if defined(JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_PRAGMAS)
-    #undef JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_PRAGMAS
-#endif
-#if JSON_HEDLEY_HAS_WARNING("-Wunknown-pragmas")
-    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_PRAGMAS _Pragma("clang diagnostic ignored \"-Wunknown-pragmas\"")
-#elif JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0)
-    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_PRAGMAS _Pragma("warning(disable:161)")
-#elif JSON_HEDLEY_INTEL_CL_VERSION_CHECK(2021,1,0)
-    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_PRAGMAS __pragma(warning(disable:161))
-#elif JSON_HEDLEY_PGI_VERSION_CHECK(17,10,0)
-    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_PRAGMAS _Pragma("diag_suppress 1675")
-#elif JSON_HEDLEY_GCC_VERSION_CHECK(4,3,0)
-    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_PRAGMAS _Pragma("GCC diagnostic ignored \"-Wunknown-pragmas\"")
-#elif JSON_HEDLEY_MSVC_VERSION_CHECK(15,0,0)
-    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_PRAGMAS __pragma(warning(disable:4068))
-#elif \
-    JSON_HEDLEY_TI_VERSION_CHECK(16,9,0) || \
-    JSON_HEDLEY_TI_CL6X_VERSION_CHECK(8,0,0) || \
-    JSON_HEDLEY_TI_CL7X_VERSION_CHECK(1,2,0) || \
-    JSON_HEDLEY_TI_CLPRU_VERSION_CHECK(2,3,0)
-    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_PRAGMAS _Pragma("diag_suppress 163")
-#elif JSON_HEDLEY_TI_CL6X_VERSION_CHECK(8,0,0)
-    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_PRAGMAS _Pragma("diag_suppress 163")
-#elif JSON_HEDLEY_IAR_VERSION_CHECK(8,0,0)
-    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_PRAGMAS _Pragma("diag_suppress=Pe161")
-#elif JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10)
-    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_PRAGMAS _Pragma("diag_suppress 161")
-#else
-    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_PRAGMAS
-#endif
-
-#if defined(JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_CPP_ATTRIBUTES)
-    #undef JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_CPP_ATTRIBUTES
-#endif
-#if JSON_HEDLEY_HAS_WARNING("-Wunknown-attributes")
-    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_CPP_ATTRIBUTES _Pragma("clang diagnostic ignored \"-Wunknown-attributes\"")
-#elif JSON_HEDLEY_GCC_VERSION_CHECK(4,6,0)
-    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_CPP_ATTRIBUTES _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"")
-#elif JSON_HEDLEY_INTEL_VERSION_CHECK(17,0,0)
-    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_CPP_ATTRIBUTES _Pragma("warning(disable:1292)")
-#elif JSON_HEDLEY_INTEL_CL_VERSION_CHECK(2021,1,0)
-    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_CPP_ATTRIBUTES __pragma(warning(disable:1292))
-#elif JSON_HEDLEY_MSVC_VERSION_CHECK(19,0,0)
-    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_CPP_ATTRIBUTES __pragma(warning(disable:5030))
-#elif JSON_HEDLEY_PGI_VERSION_CHECK(20,7,0)
-    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_CPP_ATTRIBUTES _Pragma("diag_suppress 1097,1098")
-#elif JSON_HEDLEY_PGI_VERSION_CHECK(17,10,0)
-    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_CPP_ATTRIBUTES _Pragma("diag_suppress 1097")
-#elif JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,14,0) && defined(__cplusplus)
-    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_CPP_ATTRIBUTES _Pragma("error_messages(off,attrskipunsup)")
-#elif \
-    JSON_HEDLEY_TI_VERSION_CHECK(18,1,0) || \
-    JSON_HEDLEY_TI_CL6X_VERSION_CHECK(8,3,0) || \
-    JSON_HEDLEY_TI_CL7X_VERSION_CHECK(1,2,0)
-    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_CPP_ATTRIBUTES _Pragma("diag_suppress 1173")
-#elif JSON_HEDLEY_IAR_VERSION_CHECK(8,0,0)
-    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_CPP_ATTRIBUTES _Pragma("diag_suppress=Pe1097")
-#elif JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10)
-    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_CPP_ATTRIBUTES _Pragma("diag_suppress 1097")
-#else
-    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_CPP_ATTRIBUTES
-#endif
-
-#if defined(JSON_HEDLEY_DIAGNOSTIC_DISABLE_CAST_QUAL)
-    #undef JSON_HEDLEY_DIAGNOSTIC_DISABLE_CAST_QUAL
-#endif
-#if JSON_HEDLEY_HAS_WARNING("-Wcast-qual")
-    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_CAST_QUAL _Pragma("clang diagnostic ignored \"-Wcast-qual\"")
-#elif JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0)
-    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_CAST_QUAL _Pragma("warning(disable:2203 2331)")
-#elif JSON_HEDLEY_GCC_VERSION_CHECK(3,0,0)
-    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_CAST_QUAL _Pragma("GCC diagnostic ignored \"-Wcast-qual\"")
-#else
-    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_CAST_QUAL
-#endif
-
-#if defined(JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNUSED_FUNCTION)
-    #undef JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNUSED_FUNCTION
-#endif
-#if JSON_HEDLEY_HAS_WARNING("-Wunused-function")
-    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNUSED_FUNCTION _Pragma("clang diagnostic ignored \"-Wunused-function\"")
-#elif JSON_HEDLEY_GCC_VERSION_CHECK(3,4,0)
-    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNUSED_FUNCTION _Pragma("GCC diagnostic ignored \"-Wunused-function\"")
-#elif JSON_HEDLEY_MSVC_VERSION_CHECK(1,0,0)
-    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNUSED_FUNCTION __pragma(warning(disable:4505))
-#elif JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10)
-    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNUSED_FUNCTION _Pragma("diag_suppress 3142")
-#else
-    #define JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNUSED_FUNCTION
-#endif
-
-#if defined(JSON_HEDLEY_DEPRECATED)
-    #undef JSON_HEDLEY_DEPRECATED
-#endif
-#if defined(JSON_HEDLEY_DEPRECATED_FOR)
-    #undef JSON_HEDLEY_DEPRECATED_FOR
-#endif
-#if \
-    JSON_HEDLEY_MSVC_VERSION_CHECK(14,0,0) || \
-    JSON_HEDLEY_INTEL_CL_VERSION_CHECK(2021,1,0)
-    #define JSON_HEDLEY_DEPRECATED(since) __declspec(deprecated("Since " # since))
-    #define JSON_HEDLEY_DEPRECATED_FOR(since, replacement) __declspec(deprecated("Since " #since "; use " #replacement))
-#elif \
-    (JSON_HEDLEY_HAS_EXTENSION(attribute_deprecated_with_message) && !defined(JSON_HEDLEY_IAR_VERSION)) || \
-    JSON_HEDLEY_GCC_VERSION_CHECK(4,5,0) || \
-    JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0) || \
-    JSON_HEDLEY_ARM_VERSION_CHECK(5,6,0) || \
-    JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,13,0) || \
-    JSON_HEDLEY_PGI_VERSION_CHECK(17,10,0) || \
-    JSON_HEDLEY_TI_VERSION_CHECK(18,1,0) || \
-    JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(18,1,0) || \
-    JSON_HEDLEY_TI_CL6X_VERSION_CHECK(8,3,0) || \
-    JSON_HEDLEY_TI_CL7X_VERSION_CHECK(1,2,0) || \
-    JSON_HEDLEY_TI_CLPRU_VERSION_CHECK(2,3,0) || \
-    JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10)
-    #define JSON_HEDLEY_DEPRECATED(since) __attribute__((__deprecated__("Since " #since)))
-    #define JSON_HEDLEY_DEPRECATED_FOR(since, replacement) __attribute__((__deprecated__("Since " #since "; use " #replacement)))
-#elif defined(__cplusplus) && (__cplusplus >= 201402L)
-    #define JSON_HEDLEY_DEPRECATED(since) JSON_HEDLEY_DIAGNOSTIC_DISABLE_CPP98_COMPAT_WRAP_([[deprecated("Since " #since)]])
-    #define JSON_HEDLEY_DEPRECATED_FOR(since, replacement) JSON_HEDLEY_DIAGNOSTIC_DISABLE_CPP98_COMPAT_WRAP_([[deprecated("Since " #since "; use " #replacement)]])
-#elif \
-    JSON_HEDLEY_HAS_ATTRIBUTE(deprecated) || \
-    JSON_HEDLEY_GCC_VERSION_CHECK(3,1,0) || \
-    JSON_HEDLEY_ARM_VERSION_CHECK(4,1,0) || \
-    JSON_HEDLEY_TI_VERSION_CHECK(15,12,0) || \
-    (JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(4,8,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
-    JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(5,2,0) || \
-    (JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,0,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
-    JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,4,0) || \
-    (JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,0,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
-    JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,3,0) || \
-    (JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,2,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
-    JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,5,0) || \
-    JSON_HEDLEY_TI_CL7X_VERSION_CHECK(1,2,0) || \
-    JSON_HEDLEY_TI_CLPRU_VERSION_CHECK(2,1,0) || \
-    JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10) || \
-    JSON_HEDLEY_IAR_VERSION_CHECK(8,10,0)
-    #define JSON_HEDLEY_DEPRECATED(since) __attribute__((__deprecated__))
-    #define JSON_HEDLEY_DEPRECATED_FOR(since, replacement) __attribute__((__deprecated__))
-#elif \
-    JSON_HEDLEY_MSVC_VERSION_CHECK(13,10,0) || \
-    JSON_HEDLEY_PELLES_VERSION_CHECK(6,50,0) || \
-    JSON_HEDLEY_INTEL_CL_VERSION_CHECK(2021,1,0)
-    #define JSON_HEDLEY_DEPRECATED(since) __declspec(deprecated)
-    #define JSON_HEDLEY_DEPRECATED_FOR(since, replacement) __declspec(deprecated)
-#elif JSON_HEDLEY_IAR_VERSION_CHECK(8,0,0)
-    #define JSON_HEDLEY_DEPRECATED(since) _Pragma("deprecated")
-    #define JSON_HEDLEY_DEPRECATED_FOR(since, replacement) _Pragma("deprecated")
-#else
-    #define JSON_HEDLEY_DEPRECATED(since)
-    #define JSON_HEDLEY_DEPRECATED_FOR(since, replacement)
-#endif
-
-#if defined(JSON_HEDLEY_UNAVAILABLE)
-    #undef JSON_HEDLEY_UNAVAILABLE
-#endif
-#if \
-    JSON_HEDLEY_HAS_ATTRIBUTE(warning) || \
-    JSON_HEDLEY_GCC_VERSION_CHECK(4,3,0) || \
-    JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0) || \
-    JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10)
-    #define JSON_HEDLEY_UNAVAILABLE(available_since) __attribute__((__warning__("Not available until " #available_since)))
-#else
-    #define JSON_HEDLEY_UNAVAILABLE(available_since)
-#endif
-
-#if defined(JSON_HEDLEY_WARN_UNUSED_RESULT)
-    #undef JSON_HEDLEY_WARN_UNUSED_RESULT
-#endif
-#if defined(JSON_HEDLEY_WARN_UNUSED_RESULT_MSG)
-    #undef JSON_HEDLEY_WARN_UNUSED_RESULT_MSG
-#endif
-#if \
-    JSON_HEDLEY_HAS_ATTRIBUTE(warn_unused_result) || \
-    JSON_HEDLEY_GCC_VERSION_CHECK(3,4,0) || \
-    JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0) || \
-    JSON_HEDLEY_TI_VERSION_CHECK(15,12,0) || \
-    (JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(4,8,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
-    JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(5,2,0) || \
-    (JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,0,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
-    JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,4,0) || \
-    (JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,0,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
-    JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,3,0) || \
-    (JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,2,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
-    JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,5,0) || \
-    JSON_HEDLEY_TI_CL7X_VERSION_CHECK(1,2,0) || \
-    JSON_HEDLEY_TI_CLPRU_VERSION_CHECK(2,1,0) || \
-    (JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,15,0) && defined(__cplusplus)) || \
-    JSON_HEDLEY_PGI_VERSION_CHECK(17,10,0) || \
-    JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10)
-    #define JSON_HEDLEY_WARN_UNUSED_RESULT __attribute__((__warn_unused_result__))
-    #define JSON_HEDLEY_WARN_UNUSED_RESULT_MSG(msg) __attribute__((__warn_unused_result__))
-#elif (JSON_HEDLEY_HAS_CPP_ATTRIBUTE(nodiscard) >= 201907L)
-    #define JSON_HEDLEY_WARN_UNUSED_RESULT JSON_HEDLEY_DIAGNOSTIC_DISABLE_CPP98_COMPAT_WRAP_([[nodiscard]])
-    #define JSON_HEDLEY_WARN_UNUSED_RESULT_MSG(msg) JSON_HEDLEY_DIAGNOSTIC_DISABLE_CPP98_COMPAT_WRAP_([[nodiscard(msg)]])
-#elif JSON_HEDLEY_HAS_CPP_ATTRIBUTE(nodiscard)
-    #define JSON_HEDLEY_WARN_UNUSED_RESULT JSON_HEDLEY_DIAGNOSTIC_DISABLE_CPP98_COMPAT_WRAP_([[nodiscard]])
-    #define JSON_HEDLEY_WARN_UNUSED_RESULT_MSG(msg) JSON_HEDLEY_DIAGNOSTIC_DISABLE_CPP98_COMPAT_WRAP_([[nodiscard]])
-#elif defined(_Check_return_) /* SAL */
-    #define JSON_HEDLEY_WARN_UNUSED_RESULT _Check_return_
-    #define JSON_HEDLEY_WARN_UNUSED_RESULT_MSG(msg) _Check_return_
-#else
-    #define JSON_HEDLEY_WARN_UNUSED_RESULT
-    #define JSON_HEDLEY_WARN_UNUSED_RESULT_MSG(msg)
-#endif
-
-#if defined(JSON_HEDLEY_SENTINEL)
-    #undef JSON_HEDLEY_SENTINEL
-#endif
-#if \
-    JSON_HEDLEY_HAS_ATTRIBUTE(sentinel) || \
-    JSON_HEDLEY_GCC_VERSION_CHECK(4,0,0) || \
-    JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0) || \
-    JSON_HEDLEY_ARM_VERSION_CHECK(5,4,0) || \
-    JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10)
-    #define JSON_HEDLEY_SENTINEL(position) __attribute__((__sentinel__(position)))
-#else
-    #define JSON_HEDLEY_SENTINEL(position)
-#endif
-
-#if defined(JSON_HEDLEY_NO_RETURN)
-    #undef JSON_HEDLEY_NO_RETURN
-#endif
-#if JSON_HEDLEY_IAR_VERSION_CHECK(8,0,0)
-    #define JSON_HEDLEY_NO_RETURN __noreturn
-#elif \
-    JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0) || \
-    JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10)
-    #define JSON_HEDLEY_NO_RETURN __attribute__((__noreturn__))
-#elif defined(__STDC_VERSION__) && __STDC_VERSION__ >= 201112L
-    #define JSON_HEDLEY_NO_RETURN _Noreturn
-#elif defined(__cplusplus) && (__cplusplus >= 201103L)
-    #define JSON_HEDLEY_NO_RETURN JSON_HEDLEY_DIAGNOSTIC_DISABLE_CPP98_COMPAT_WRAP_([[noreturn]])
-#elif \
-    JSON_HEDLEY_HAS_ATTRIBUTE(noreturn) || \
-    JSON_HEDLEY_GCC_VERSION_CHECK(3,2,0) || \
-    JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,11,0) || \
-    JSON_HEDLEY_ARM_VERSION_CHECK(4,1,0) || \
-    JSON_HEDLEY_IBM_VERSION_CHECK(10,1,0) || \
-    JSON_HEDLEY_TI_VERSION_CHECK(15,12,0) || \
-    (JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(4,8,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
-    JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(5,2,0) || \
-    (JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,0,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
-    JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,4,0) || \
-    (JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,0,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
-    JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,3,0) || \
-    (JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,2,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
-    JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,5,0) || \
-    JSON_HEDLEY_TI_CL7X_VERSION_CHECK(1,2,0) || \
-    JSON_HEDLEY_TI_CLPRU_VERSION_CHECK(2,1,0) || \
-    JSON_HEDLEY_IAR_VERSION_CHECK(8,10,0)
-    #define JSON_HEDLEY_NO_RETURN __attribute__((__noreturn__))
-#elif JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,10,0)
-    #define JSON_HEDLEY_NO_RETURN _Pragma("does_not_return")
-#elif \
-    JSON_HEDLEY_MSVC_VERSION_CHECK(13,10,0) || \
-    JSON_HEDLEY_INTEL_CL_VERSION_CHECK(2021,1,0)
-    #define JSON_HEDLEY_NO_RETURN __declspec(noreturn)
-#elif JSON_HEDLEY_TI_CL6X_VERSION_CHECK(6,0,0) && defined(__cplusplus)
-    #define JSON_HEDLEY_NO_RETURN _Pragma("FUNC_NEVER_RETURNS;")
-#elif JSON_HEDLEY_COMPCERT_VERSION_CHECK(3,2,0)
-    #define JSON_HEDLEY_NO_RETURN __attribute((noreturn))
-#elif JSON_HEDLEY_PELLES_VERSION_CHECK(9,0,0)
-    #define JSON_HEDLEY_NO_RETURN __declspec(noreturn)
-#else
-    #define JSON_HEDLEY_NO_RETURN
-#endif
-
-#if defined(JSON_HEDLEY_NO_ESCAPE)
-    #undef JSON_HEDLEY_NO_ESCAPE
-#endif
-#if JSON_HEDLEY_HAS_ATTRIBUTE(noescape)
-    #define JSON_HEDLEY_NO_ESCAPE __attribute__((__noescape__))
-#else
-    #define JSON_HEDLEY_NO_ESCAPE
-#endif
-
-#if defined(JSON_HEDLEY_UNREACHABLE)
-    #undef JSON_HEDLEY_UNREACHABLE
-#endif
-#if defined(JSON_HEDLEY_UNREACHABLE_RETURN)
-    #undef JSON_HEDLEY_UNREACHABLE_RETURN
-#endif
-#if defined(JSON_HEDLEY_ASSUME)
-    #undef JSON_HEDLEY_ASSUME
-#endif
-#if \
-    JSON_HEDLEY_MSVC_VERSION_CHECK(13,10,0) || \
-    JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0) || \
-    JSON_HEDLEY_INTEL_CL_VERSION_CHECK(2021,1,0)
-    #define JSON_HEDLEY_ASSUME(expr) __assume(expr)
-#elif JSON_HEDLEY_HAS_BUILTIN(__builtin_assume)
-    #define JSON_HEDLEY_ASSUME(expr) __builtin_assume(expr)
-#elif \
-    JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,2,0) || \
-    JSON_HEDLEY_TI_CL6X_VERSION_CHECK(4,0,0)
-    #if defined(__cplusplus)
-        #define JSON_HEDLEY_ASSUME(expr) std::_nassert(expr)
-    #else
-        #define JSON_HEDLEY_ASSUME(expr) _nassert(expr)
-    #endif
-#endif
-#if \
-    (JSON_HEDLEY_HAS_BUILTIN(__builtin_unreachable) && (!defined(JSON_HEDLEY_ARM_VERSION))) || \
-    JSON_HEDLEY_GCC_VERSION_CHECK(4,5,0) || \
-    JSON_HEDLEY_PGI_VERSION_CHECK(18,10,0) || \
-    JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0) || \
-    JSON_HEDLEY_IBM_VERSION_CHECK(13,1,5) || \
-    JSON_HEDLEY_CRAY_VERSION_CHECK(10,0,0) || \
-    JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10)
-    #define JSON_HEDLEY_UNREACHABLE() __builtin_unreachable()
-#elif defined(JSON_HEDLEY_ASSUME)
-    #define JSON_HEDLEY_UNREACHABLE() JSON_HEDLEY_ASSUME(0)
-#endif
-#if !defined(JSON_HEDLEY_ASSUME)
-    #if defined(JSON_HEDLEY_UNREACHABLE)
-        #define JSON_HEDLEY_ASSUME(expr) JSON_HEDLEY_STATIC_CAST(void, ((expr) ? 1 : (JSON_HEDLEY_UNREACHABLE(), 1)))
-    #else
-        #define JSON_HEDLEY_ASSUME(expr) JSON_HEDLEY_STATIC_CAST(void, expr)
-    #endif
-#endif
-#if defined(JSON_HEDLEY_UNREACHABLE)
-    #if  \
-        JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,2,0) || \
-        JSON_HEDLEY_TI_CL6X_VERSION_CHECK(4,0,0)
-        #define JSON_HEDLEY_UNREACHABLE_RETURN(value) return (JSON_HEDLEY_STATIC_CAST(void, JSON_HEDLEY_ASSUME(0)), (value))
-    #else
-        #define JSON_HEDLEY_UNREACHABLE_RETURN(value) JSON_HEDLEY_UNREACHABLE()
-    #endif
-#else
-    #define JSON_HEDLEY_UNREACHABLE_RETURN(value) return (value)
-#endif
-#if !defined(JSON_HEDLEY_UNREACHABLE)
-    #define JSON_HEDLEY_UNREACHABLE() JSON_HEDLEY_ASSUME(0)
-#endif
-
-JSON_HEDLEY_DIAGNOSTIC_PUSH
-#if JSON_HEDLEY_HAS_WARNING("-Wpedantic")
-    #pragma clang diagnostic ignored "-Wpedantic"
-#endif
-#if JSON_HEDLEY_HAS_WARNING("-Wc++98-compat-pedantic") && defined(__cplusplus)
-    #pragma clang diagnostic ignored "-Wc++98-compat-pedantic"
-#endif
-#if JSON_HEDLEY_GCC_HAS_WARNING("-Wvariadic-macros",4,0,0)
-    #if defined(__clang__)
-        #pragma clang diagnostic ignored "-Wvariadic-macros"
-    #elif defined(JSON_HEDLEY_GCC_VERSION)
-        #pragma GCC diagnostic ignored "-Wvariadic-macros"
-    #endif
-#endif
-#if defined(JSON_HEDLEY_NON_NULL)
-    #undef JSON_HEDLEY_NON_NULL
-#endif
-#if \
-    JSON_HEDLEY_HAS_ATTRIBUTE(nonnull) || \
-    JSON_HEDLEY_GCC_VERSION_CHECK(3,3,0) || \
-    JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0) || \
-    JSON_HEDLEY_ARM_VERSION_CHECK(4,1,0)
-    #define JSON_HEDLEY_NON_NULL(...) __attribute__((__nonnull__(__VA_ARGS__)))
-#else
-    #define JSON_HEDLEY_NON_NULL(...)
-#endif
-JSON_HEDLEY_DIAGNOSTIC_POP
-
-#if defined(JSON_HEDLEY_PRINTF_FORMAT)
-    #undef JSON_HEDLEY_PRINTF_FORMAT
-#endif
-#if defined(__MINGW32__) && JSON_HEDLEY_GCC_HAS_ATTRIBUTE(format,4,4,0) && !defined(__USE_MINGW_ANSI_STDIO)
-    #define JSON_HEDLEY_PRINTF_FORMAT(string_idx,first_to_check) __attribute__((__format__(ms_printf, string_idx, first_to_check)))
-#elif defined(__MINGW32__) && JSON_HEDLEY_GCC_HAS_ATTRIBUTE(format,4,4,0) && defined(__USE_MINGW_ANSI_STDIO)
-    #define JSON_HEDLEY_PRINTF_FORMAT(string_idx,first_to_check) __attribute__((__format__(gnu_printf, string_idx, first_to_check)))
-#elif \
-    JSON_HEDLEY_HAS_ATTRIBUTE(format) || \
-    JSON_HEDLEY_GCC_VERSION_CHECK(3,1,0) || \
-    JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0) || \
-    JSON_HEDLEY_ARM_VERSION_CHECK(5,6,0) || \
-    JSON_HEDLEY_IBM_VERSION_CHECK(10,1,0) || \
-    JSON_HEDLEY_TI_VERSION_CHECK(15,12,0) || \
-    (JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(4,8,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
-    JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(5,2,0) || \
-    (JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,0,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
-    JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,4,0) || \
-    (JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,0,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
-    JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,3,0) || \
-    (JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,2,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
-    JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,5,0) || \
-    JSON_HEDLEY_TI_CL7X_VERSION_CHECK(1,2,0) || \
-    JSON_HEDLEY_TI_CLPRU_VERSION_CHECK(2,1,0) || \
-    JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10)
-    #define JSON_HEDLEY_PRINTF_FORMAT(string_idx,first_to_check) __attribute__((__format__(__printf__, string_idx, first_to_check)))
-#elif JSON_HEDLEY_PELLES_VERSION_CHECK(6,0,0)
-    #define JSON_HEDLEY_PRINTF_FORMAT(string_idx,first_to_check) __declspec(vaformat(printf,string_idx,first_to_check))
-#else
-    #define JSON_HEDLEY_PRINTF_FORMAT(string_idx,first_to_check)
-#endif
-
-#if defined(JSON_HEDLEY_CONSTEXPR)
-    #undef JSON_HEDLEY_CONSTEXPR
-#endif
-#if defined(__cplusplus)
-    #if __cplusplus >= 201103L
-        #define JSON_HEDLEY_CONSTEXPR JSON_HEDLEY_DIAGNOSTIC_DISABLE_CPP98_COMPAT_WRAP_(constexpr)
-    #endif
-#endif
-#if !defined(JSON_HEDLEY_CONSTEXPR)
-    #define JSON_HEDLEY_CONSTEXPR
-#endif
-
-#if defined(JSON_HEDLEY_PREDICT)
-    #undef JSON_HEDLEY_PREDICT
-#endif
-#if defined(JSON_HEDLEY_LIKELY)
-    #undef JSON_HEDLEY_LIKELY
-#endif
-#if defined(JSON_HEDLEY_UNLIKELY)
-    #undef JSON_HEDLEY_UNLIKELY
-#endif
-#if defined(JSON_HEDLEY_UNPREDICTABLE)
-    #undef JSON_HEDLEY_UNPREDICTABLE
-#endif
-#if JSON_HEDLEY_HAS_BUILTIN(__builtin_unpredictable)
-    #define JSON_HEDLEY_UNPREDICTABLE(expr) __builtin_unpredictable((expr))
-#endif
-#if \
-  (JSON_HEDLEY_HAS_BUILTIN(__builtin_expect_with_probability) && !defined(JSON_HEDLEY_PGI_VERSION)) || \
-  JSON_HEDLEY_GCC_VERSION_CHECK(9,0,0) || \
-  JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10)
-#  define JSON_HEDLEY_PREDICT(expr, value, probability) __builtin_expect_with_probability(  (expr), (value), (probability))
-#  define JSON_HEDLEY_PREDICT_TRUE(expr, probability)   __builtin_expect_with_probability(!!(expr),    1   , (probability))
-#  define JSON_HEDLEY_PREDICT_FALSE(expr, probability)  __builtin_expect_with_probability(!!(expr),    0   , (probability))
-#  define JSON_HEDLEY_LIKELY(expr)                      __builtin_expect                 (!!(expr),    1                  )
-#  define JSON_HEDLEY_UNLIKELY(expr)                    __builtin_expect                 (!!(expr),    0                  )
-#elif \
-  (JSON_HEDLEY_HAS_BUILTIN(__builtin_expect) && !defined(JSON_HEDLEY_INTEL_CL_VERSION)) || \
-  JSON_HEDLEY_GCC_VERSION_CHECK(3,0,0) || \
-  JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0) || \
-  (JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,15,0) && defined(__cplusplus)) || \
-  JSON_HEDLEY_ARM_VERSION_CHECK(4,1,0) || \
-  JSON_HEDLEY_IBM_VERSION_CHECK(10,1,0) || \
-  JSON_HEDLEY_TI_VERSION_CHECK(15,12,0) || \
-  JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(4,7,0) || \
-  JSON_HEDLEY_TI_CL430_VERSION_CHECK(3,1,0) || \
-  JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,1,0) || \
-  JSON_HEDLEY_TI_CL6X_VERSION_CHECK(6,1,0) || \
-  JSON_HEDLEY_TI_CL7X_VERSION_CHECK(1,2,0) || \
-  JSON_HEDLEY_TI_CLPRU_VERSION_CHECK(2,1,0) || \
-  JSON_HEDLEY_TINYC_VERSION_CHECK(0,9,27) || \
-  JSON_HEDLEY_CRAY_VERSION_CHECK(8,1,0) || \
-  JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10)
-#  define JSON_HEDLEY_PREDICT(expr, expected, probability) \
-    (((probability) >= 0.9) ? __builtin_expect((expr), (expected)) : (JSON_HEDLEY_STATIC_CAST(void, expected), (expr)))
-#  define JSON_HEDLEY_PREDICT_TRUE(expr, probability) \
-    (__extension__ ({ \
-        double hedley_probability_ = (probability); \
-        ((hedley_probability_ >= 0.9) ? __builtin_expect(!!(expr), 1) : ((hedley_probability_ <= 0.1) ? __builtin_expect(!!(expr), 0) : !!(expr))); \
-    }))
-#  define JSON_HEDLEY_PREDICT_FALSE(expr, probability) \
-    (__extension__ ({ \
-        double hedley_probability_ = (probability); \
-        ((hedley_probability_ >= 0.9) ? __builtin_expect(!!(expr), 0) : ((hedley_probability_ <= 0.1) ? __builtin_expect(!!(expr), 1) : !!(expr))); \
-    }))
-#  define JSON_HEDLEY_LIKELY(expr)   __builtin_expect(!!(expr), 1)
-#  define JSON_HEDLEY_UNLIKELY(expr) __builtin_expect(!!(expr), 0)
-#else
-#  define JSON_HEDLEY_PREDICT(expr, expected, probability) (JSON_HEDLEY_STATIC_CAST(void, expected), (expr))
-#  define JSON_HEDLEY_PREDICT_TRUE(expr, probability) (!!(expr))
-#  define JSON_HEDLEY_PREDICT_FALSE(expr, probability) (!!(expr))
-#  define JSON_HEDLEY_LIKELY(expr) (!!(expr))
-#  define JSON_HEDLEY_UNLIKELY(expr) (!!(expr))
-#endif
-#if !defined(JSON_HEDLEY_UNPREDICTABLE)
-    #define JSON_HEDLEY_UNPREDICTABLE(expr) JSON_HEDLEY_PREDICT(expr, 1, 0.5)
-#endif
-
-#if defined(JSON_HEDLEY_MALLOC)
-    #undef JSON_HEDLEY_MALLOC
-#endif
-#if \
-    JSON_HEDLEY_HAS_ATTRIBUTE(malloc) || \
-    JSON_HEDLEY_GCC_VERSION_CHECK(3,1,0) || \
-    JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0) || \
-    JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,11,0) || \
-    JSON_HEDLEY_ARM_VERSION_CHECK(4,1,0) || \
-    JSON_HEDLEY_IBM_VERSION_CHECK(12,1,0) || \
-    JSON_HEDLEY_TI_VERSION_CHECK(15,12,0) || \
-    (JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(4,8,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
-    JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(5,2,0) || \
-    (JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,0,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
-    JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,4,0) || \
-    (JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,0,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
-    JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,3,0) || \
-    (JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,2,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
-    JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,5,0) || \
-    JSON_HEDLEY_TI_CL7X_VERSION_CHECK(1,2,0) || \
-    JSON_HEDLEY_TI_CLPRU_VERSION_CHECK(2,1,0) || \
-    JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10)
-    #define JSON_HEDLEY_MALLOC __attribute__((__malloc__))
-#elif JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,10,0)
-    #define JSON_HEDLEY_MALLOC _Pragma("returns_new_memory")
-#elif \
-    JSON_HEDLEY_MSVC_VERSION_CHECK(14,0,0) || \
-    JSON_HEDLEY_INTEL_CL_VERSION_CHECK(2021,1,0)
-    #define JSON_HEDLEY_MALLOC __declspec(restrict)
-#else
-    #define JSON_HEDLEY_MALLOC
-#endif
-
-#if defined(JSON_HEDLEY_PURE)
-    #undef JSON_HEDLEY_PURE
-#endif
-#if \
-  JSON_HEDLEY_HAS_ATTRIBUTE(pure) || \
-  JSON_HEDLEY_GCC_VERSION_CHECK(2,96,0) || \
-  JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0) || \
-  JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,11,0) || \
-  JSON_HEDLEY_ARM_VERSION_CHECK(4,1,0) || \
-  JSON_HEDLEY_IBM_VERSION_CHECK(10,1,0) || \
-  JSON_HEDLEY_TI_VERSION_CHECK(15,12,0) || \
-  (JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(4,8,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
-  JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(5,2,0) || \
-  (JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,0,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
-  JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,4,0) || \
-  (JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,0,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
-  JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,3,0) || \
-  (JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,2,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
-  JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,5,0) || \
-  JSON_HEDLEY_TI_CL7X_VERSION_CHECK(1,2,0) || \
-  JSON_HEDLEY_TI_CLPRU_VERSION_CHECK(2,1,0) || \
-  JSON_HEDLEY_PGI_VERSION_CHECK(17,10,0) || \
-  JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10)
-#  define JSON_HEDLEY_PURE __attribute__((__pure__))
-#elif JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,10,0)
-#  define JSON_HEDLEY_PURE _Pragma("does_not_write_global_data")
-#elif defined(__cplusplus) && \
-    ( \
-      JSON_HEDLEY_TI_CL430_VERSION_CHECK(2,0,1) || \
-      JSON_HEDLEY_TI_CL6X_VERSION_CHECK(4,0,0) || \
-      JSON_HEDLEY_TI_CL7X_VERSION_CHECK(1,2,0) \
-    )
-#  define JSON_HEDLEY_PURE _Pragma("FUNC_IS_PURE;")
-#else
-#  define JSON_HEDLEY_PURE
-#endif
-
-#if defined(JSON_HEDLEY_CONST)
-    #undef JSON_HEDLEY_CONST
-#endif
-#if \
-    JSON_HEDLEY_HAS_ATTRIBUTE(const) || \
-    JSON_HEDLEY_GCC_VERSION_CHECK(2,5,0) || \
-    JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0) || \
-    JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,11,0) || \
-    JSON_HEDLEY_ARM_VERSION_CHECK(4,1,0) || \
-    JSON_HEDLEY_IBM_VERSION_CHECK(10,1,0) || \
-    JSON_HEDLEY_TI_VERSION_CHECK(15,12,0) || \
-    (JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(4,8,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
-    JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(5,2,0) || \
-    (JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,0,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
-    JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,4,0) || \
-    (JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,0,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
-    JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,3,0) || \
-    (JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,2,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
-    JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,5,0) || \
-    JSON_HEDLEY_TI_CL7X_VERSION_CHECK(1,2,0) || \
-    JSON_HEDLEY_TI_CLPRU_VERSION_CHECK(2,1,0) || \
-    JSON_HEDLEY_PGI_VERSION_CHECK(17,10,0) || \
-    JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10)
-    #define JSON_HEDLEY_CONST __attribute__((__const__))
-#elif \
-    JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,10,0)
-    #define JSON_HEDLEY_CONST _Pragma("no_side_effect")
-#else
-    #define JSON_HEDLEY_CONST JSON_HEDLEY_PURE
-#endif
-
-#if defined(JSON_HEDLEY_RESTRICT)
-    #undef JSON_HEDLEY_RESTRICT
-#endif
-#if defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L) && !defined(__cplusplus)
-    #define JSON_HEDLEY_RESTRICT restrict
-#elif \
-    JSON_HEDLEY_GCC_VERSION_CHECK(3,1,0) || \
-    JSON_HEDLEY_MSVC_VERSION_CHECK(14,0,0) || \
-    JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0) || \
-    JSON_HEDLEY_INTEL_CL_VERSION_CHECK(2021,1,0) || \
-    JSON_HEDLEY_ARM_VERSION_CHECK(4,1,0) || \
-    JSON_HEDLEY_IBM_VERSION_CHECK(10,1,0) || \
-    JSON_HEDLEY_PGI_VERSION_CHECK(17,10,0) || \
-    JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,3,0) || \
-    JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,2,4) || \
-    JSON_HEDLEY_TI_CL6X_VERSION_CHECK(8,1,0) || \
-    JSON_HEDLEY_TI_CL7X_VERSION_CHECK(1,2,0) || \
-    (JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,14,0) && defined(__cplusplus)) || \
-    JSON_HEDLEY_IAR_VERSION_CHECK(8,0,0) || \
-    defined(__clang__) || \
-    JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10)
-    #define JSON_HEDLEY_RESTRICT __restrict
-#elif JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,3,0) && !defined(__cplusplus)
-    #define JSON_HEDLEY_RESTRICT _Restrict
-#else
-    #define JSON_HEDLEY_RESTRICT
-#endif
-
-#if defined(JSON_HEDLEY_INLINE)
-    #undef JSON_HEDLEY_INLINE
-#endif
-#if \
-    (defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L)) || \
-    (defined(__cplusplus) && (__cplusplus >= 199711L))
-    #define JSON_HEDLEY_INLINE inline
-#elif \
-    defined(JSON_HEDLEY_GCC_VERSION) || \
-    JSON_HEDLEY_ARM_VERSION_CHECK(6,2,0)
-    #define JSON_HEDLEY_INLINE __inline__
-#elif \
-    JSON_HEDLEY_MSVC_VERSION_CHECK(12,0,0) || \
-    JSON_HEDLEY_INTEL_CL_VERSION_CHECK(2021,1,0) || \
-    JSON_HEDLEY_ARM_VERSION_CHECK(4,1,0) || \
-    JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(5,1,0) || \
-    JSON_HEDLEY_TI_CL430_VERSION_CHECK(3,1,0) || \
-    JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,2,0) || \
-    JSON_HEDLEY_TI_CL6X_VERSION_CHECK(8,0,0) || \
-    JSON_HEDLEY_TI_CL7X_VERSION_CHECK(1,2,0) || \
-    JSON_HEDLEY_TI_CLPRU_VERSION_CHECK(2,1,0) || \
-    JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10)
-    #define JSON_HEDLEY_INLINE __inline
-#else
-    #define JSON_HEDLEY_INLINE
-#endif
-
-#if defined(JSON_HEDLEY_ALWAYS_INLINE)
-    #undef JSON_HEDLEY_ALWAYS_INLINE
-#endif
-#if \
-  JSON_HEDLEY_HAS_ATTRIBUTE(always_inline) || \
-  JSON_HEDLEY_GCC_VERSION_CHECK(4,0,0) || \
-  JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0) || \
-  JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,11,0) || \
-  JSON_HEDLEY_ARM_VERSION_CHECK(4,1,0) || \
-  JSON_HEDLEY_IBM_VERSION_CHECK(10,1,0) || \
-  JSON_HEDLEY_TI_VERSION_CHECK(15,12,0) || \
-  (JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(4,8,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
-  JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(5,2,0) || \
-  (JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,0,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
-  JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,4,0) || \
-  (JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,0,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
-  JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,3,0) || \
-  (JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,2,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
-  JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,5,0) || \
-  JSON_HEDLEY_TI_CL7X_VERSION_CHECK(1,2,0) || \
-  JSON_HEDLEY_TI_CLPRU_VERSION_CHECK(2,1,0) || \
-  JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10) || \
-  JSON_HEDLEY_IAR_VERSION_CHECK(8,10,0)
-#  define JSON_HEDLEY_ALWAYS_INLINE __attribute__((__always_inline__)) JSON_HEDLEY_INLINE
-#elif \
-  JSON_HEDLEY_MSVC_VERSION_CHECK(12,0,0) || \
-  JSON_HEDLEY_INTEL_CL_VERSION_CHECK(2021,1,0)
-#  define JSON_HEDLEY_ALWAYS_INLINE __forceinline
-#elif defined(__cplusplus) && \
-    ( \
-      JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(5,2,0) || \
-      JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,3,0) || \
-      JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,4,0) || \
-      JSON_HEDLEY_TI_CL6X_VERSION_CHECK(6,1,0) || \
-      JSON_HEDLEY_TI_CL7X_VERSION_CHECK(1,2,0) || \
-      JSON_HEDLEY_TI_CLPRU_VERSION_CHECK(2,1,0) \
-    )
-#  define JSON_HEDLEY_ALWAYS_INLINE _Pragma("FUNC_ALWAYS_INLINE;")
-#elif JSON_HEDLEY_IAR_VERSION_CHECK(8,0,0)
-#  define JSON_HEDLEY_ALWAYS_INLINE _Pragma("inline=forced")
-#else
-#  define JSON_HEDLEY_ALWAYS_INLINE JSON_HEDLEY_INLINE
-#endif
-
-#if defined(JSON_HEDLEY_NEVER_INLINE)
-    #undef JSON_HEDLEY_NEVER_INLINE
-#endif
-#if \
-    JSON_HEDLEY_HAS_ATTRIBUTE(noinline) || \
-    JSON_HEDLEY_GCC_VERSION_CHECK(4,0,0) || \
-    JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0) || \
-    JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,11,0) || \
-    JSON_HEDLEY_ARM_VERSION_CHECK(4,1,0) || \
-    JSON_HEDLEY_IBM_VERSION_CHECK(10,1,0) || \
-    JSON_HEDLEY_TI_VERSION_CHECK(15,12,0) || \
-    (JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(4,8,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
-    JSON_HEDLEY_TI_ARMCL_VERSION_CHECK(5,2,0) || \
-    (JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,0,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
-    JSON_HEDLEY_TI_CL2000_VERSION_CHECK(6,4,0) || \
-    (JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,0,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
-    JSON_HEDLEY_TI_CL430_VERSION_CHECK(4,3,0) || \
-    (JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,2,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
-    JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,5,0) || \
-    JSON_HEDLEY_TI_CL7X_VERSION_CHECK(1,2,0) || \
-    JSON_HEDLEY_TI_CLPRU_VERSION_CHECK(2,1,0) || \
-    JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10) || \
-    JSON_HEDLEY_IAR_VERSION_CHECK(8,10,0)
-    #define JSON_HEDLEY_NEVER_INLINE __attribute__((__noinline__))
-#elif \
-    JSON_HEDLEY_MSVC_VERSION_CHECK(13,10,0) || \
-    JSON_HEDLEY_INTEL_CL_VERSION_CHECK(2021,1,0)
-    #define JSON_HEDLEY_NEVER_INLINE __declspec(noinline)
-#elif JSON_HEDLEY_PGI_VERSION_CHECK(10,2,0)
-    #define JSON_HEDLEY_NEVER_INLINE _Pragma("noinline")
-#elif JSON_HEDLEY_TI_CL6X_VERSION_CHECK(6,0,0) && defined(__cplusplus)
-    #define JSON_HEDLEY_NEVER_INLINE _Pragma("FUNC_CANNOT_INLINE;")
-#elif JSON_HEDLEY_IAR_VERSION_CHECK(8,0,0)
-    #define JSON_HEDLEY_NEVER_INLINE _Pragma("inline=never")
-#elif JSON_HEDLEY_COMPCERT_VERSION_CHECK(3,2,0)
-    #define JSON_HEDLEY_NEVER_INLINE __attribute((noinline))
-#elif JSON_HEDLEY_PELLES_VERSION_CHECK(9,0,0)
-    #define JSON_HEDLEY_NEVER_INLINE __declspec(noinline)
-#else
-    #define JSON_HEDLEY_NEVER_INLINE
-#endif
-
-#if defined(JSON_HEDLEY_PRIVATE)
-    #undef JSON_HEDLEY_PRIVATE
-#endif
-#if defined(JSON_HEDLEY_PUBLIC)
-    #undef JSON_HEDLEY_PUBLIC
-#endif
-#if defined(JSON_HEDLEY_IMPORT)
-    #undef JSON_HEDLEY_IMPORT
-#endif
-#if defined(_WIN32) || defined(__CYGWIN__)
-#  define JSON_HEDLEY_PRIVATE
-#  define JSON_HEDLEY_PUBLIC   __declspec(dllexport)
-#  define JSON_HEDLEY_IMPORT   __declspec(dllimport)
-#else
-#  if \
-    JSON_HEDLEY_HAS_ATTRIBUTE(visibility) || \
-    JSON_HEDLEY_GCC_VERSION_CHECK(3,3,0) || \
-    JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,11,0) || \
-    JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0) || \
-    JSON_HEDLEY_ARM_VERSION_CHECK(4,1,0) || \
-    JSON_HEDLEY_IBM_VERSION_CHECK(13,1,0) || \
-    ( \
-      defined(__TI_EABI__) && \
-      ( \
-        (JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,2,0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__)) || \
-        JSON_HEDLEY_TI_CL6X_VERSION_CHECK(7,5,0) \
-      ) \
-    ) || \
-    JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10)
-#    define JSON_HEDLEY_PRIVATE __attribute__((__visibility__("hidden")))
-#    define JSON_HEDLEY_PUBLIC  __attribute__((__visibility__("default")))
-#  else
-#    define JSON_HEDLEY_PRIVATE
-#    define JSON_HEDLEY_PUBLIC
-#  endif
-#  define JSON_HEDLEY_IMPORT    extern
-#endif
-
-#if defined(JSON_HEDLEY_NO_THROW)
-    #undef JSON_HEDLEY_NO_THROW
-#endif
-#if \
-    JSON_HEDLEY_HAS_ATTRIBUTE(nothrow) || \
-    JSON_HEDLEY_GCC_VERSION_CHECK(3,3,0) || \
-    JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0) || \
-    JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10)
-    #define JSON_HEDLEY_NO_THROW __attribute__((__nothrow__))
-#elif \
-    JSON_HEDLEY_MSVC_VERSION_CHECK(13,1,0) || \
-    JSON_HEDLEY_INTEL_CL_VERSION_CHECK(2021,1,0) || \
-    JSON_HEDLEY_ARM_VERSION_CHECK(4,1,0)
-    #define JSON_HEDLEY_NO_THROW __declspec(nothrow)
-#else
-    #define JSON_HEDLEY_NO_THROW
-#endif
-
-#if defined(JSON_HEDLEY_FALL_THROUGH)
-    #undef JSON_HEDLEY_FALL_THROUGH
-#endif
-#if \
-    JSON_HEDLEY_HAS_ATTRIBUTE(fallthrough) || \
-    JSON_HEDLEY_GCC_VERSION_CHECK(7,0,0) || \
-    JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10)
-    #define JSON_HEDLEY_FALL_THROUGH __attribute__((__fallthrough__))
-#elif JSON_HEDLEY_HAS_CPP_ATTRIBUTE_NS(clang,fallthrough)
-    #define JSON_HEDLEY_FALL_THROUGH JSON_HEDLEY_DIAGNOSTIC_DISABLE_CPP98_COMPAT_WRAP_([[clang::fallthrough]])
-#elif JSON_HEDLEY_HAS_CPP_ATTRIBUTE(fallthrough)
-    #define JSON_HEDLEY_FALL_THROUGH JSON_HEDLEY_DIAGNOSTIC_DISABLE_CPP98_COMPAT_WRAP_([[fallthrough]])
-#elif defined(__fallthrough) /* SAL */
-    #define JSON_HEDLEY_FALL_THROUGH __fallthrough
-#else
-    #define JSON_HEDLEY_FALL_THROUGH
-#endif
-
-#if defined(JSON_HEDLEY_RETURNS_NON_NULL)
-    #undef JSON_HEDLEY_RETURNS_NON_NULL
-#endif
-#if \
-    JSON_HEDLEY_HAS_ATTRIBUTE(returns_nonnull) || \
-    JSON_HEDLEY_GCC_VERSION_CHECK(4,9,0) || \
-    JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10)
-    #define JSON_HEDLEY_RETURNS_NON_NULL __attribute__((__returns_nonnull__))
-#elif defined(_Ret_notnull_) /* SAL */
-    #define JSON_HEDLEY_RETURNS_NON_NULL _Ret_notnull_
-#else
-    #define JSON_HEDLEY_RETURNS_NON_NULL
-#endif
-
-#if defined(JSON_HEDLEY_ARRAY_PARAM)
-    #undef JSON_HEDLEY_ARRAY_PARAM
-#endif
-#if \
-    defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L) && \
-    !defined(__STDC_NO_VLA__) && \
-    !defined(__cplusplus) && \
-    !defined(JSON_HEDLEY_PGI_VERSION) && \
-    !defined(JSON_HEDLEY_TINYC_VERSION)
-    #define JSON_HEDLEY_ARRAY_PARAM(name) (name)
-#else
-    #define JSON_HEDLEY_ARRAY_PARAM(name)
-#endif
-
-#if defined(JSON_HEDLEY_IS_CONSTANT)
-    #undef JSON_HEDLEY_IS_CONSTANT
-#endif
-#if defined(JSON_HEDLEY_REQUIRE_CONSTEXPR)
-    #undef JSON_HEDLEY_REQUIRE_CONSTEXPR
-#endif
-/* JSON_HEDLEY_IS_CONSTEXPR_ is for
-   HEDLEY INTERNAL USE ONLY.  API subject to change without notice. */
-#if defined(JSON_HEDLEY_IS_CONSTEXPR_)
-    #undef JSON_HEDLEY_IS_CONSTEXPR_
-#endif
-#if \
-    JSON_HEDLEY_HAS_BUILTIN(__builtin_constant_p) || \
-    JSON_HEDLEY_GCC_VERSION_CHECK(3,4,0) || \
-    JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0) || \
-    JSON_HEDLEY_TINYC_VERSION_CHECK(0,9,19) || \
-    JSON_HEDLEY_ARM_VERSION_CHECK(4,1,0) || \
-    JSON_HEDLEY_IBM_VERSION_CHECK(13,1,0) || \
-    JSON_HEDLEY_TI_CL6X_VERSION_CHECK(6,1,0) || \
-    (JSON_HEDLEY_SUNPRO_VERSION_CHECK(5,10,0) && !defined(__cplusplus)) || \
-    JSON_HEDLEY_CRAY_VERSION_CHECK(8,1,0) || \
-    JSON_HEDLEY_MCST_LCC_VERSION_CHECK(1,25,10)
-    #define JSON_HEDLEY_IS_CONSTANT(expr) __builtin_constant_p(expr)
-#endif
-#if !defined(__cplusplus)
-#  if \
-       JSON_HEDLEY_HAS_BUILTIN(__builtin_types_compatible_p) || \
-       JSON_HEDLEY_GCC_VERSION_CHECK(3,4,0) || \
-       JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0) || \
-       JSON_HEDLEY_IBM_VERSION_CHECK(13,1,0) || \
-       JSON_HEDLEY_CRAY_VERSION_CHECK(8,1,0) || \
-       JSON_HEDLEY_ARM_VERSION_CHECK(5,4,0) || \
-       JSON_HEDLEY_TINYC_VERSION_CHECK(0,9,24)
-#if defined(__INTPTR_TYPE__)
-    #define JSON_HEDLEY_IS_CONSTEXPR_(expr) __builtin_types_compatible_p(__typeof__((1 ? (void*) ((__INTPTR_TYPE__) ((expr) * 0)) : (int*) 0)), int*)
-#else
-    #include <stdint.h>
-    #define JSON_HEDLEY_IS_CONSTEXPR_(expr) __builtin_types_compatible_p(__typeof__((1 ? (void*) ((intptr_t) ((expr) * 0)) : (int*) 0)), int*)
-#endif
-#  elif \
-       ( \
-          defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 201112L) && \
-          !defined(JSON_HEDLEY_SUNPRO_VERSION) && \
-          !defined(JSON_HEDLEY_PGI_VERSION) && \
-          !defined(JSON_HEDLEY_IAR_VERSION)) || \
-       (JSON_HEDLEY_HAS_EXTENSION(c_generic_selections) && !defined(JSON_HEDLEY_IAR_VERSION)) || \
-       JSON_HEDLEY_GCC_VERSION_CHECK(4,9,0) || \
-       JSON_HEDLEY_INTEL_VERSION_CHECK(17,0,0) || \
-       JSON_HEDLEY_IBM_VERSION_CHECK(12,1,0) || \
-       JSON_HEDLEY_ARM_VERSION_CHECK(5,3,0)
-#if defined(__INTPTR_TYPE__)
-    #define JSON_HEDLEY_IS_CONSTEXPR_(expr) _Generic((1 ? (void*) ((__INTPTR_TYPE__) ((expr) * 0)) : (int*) 0), int*: 1, void*: 0)
-#else
-    #include <stdint.h>
-    #define JSON_HEDLEY_IS_CONSTEXPR_(expr) _Generic((1 ? (void*) ((intptr_t) * 0) : (int*) 0), int*: 1, void*: 0)
-#endif
-#  elif \
-       defined(JSON_HEDLEY_GCC_VERSION) || \
-       defined(JSON_HEDLEY_INTEL_VERSION) || \
-       defined(JSON_HEDLEY_TINYC_VERSION) || \
-       defined(JSON_HEDLEY_TI_ARMCL_VERSION) || \
-       JSON_HEDLEY_TI_CL430_VERSION_CHECK(18,12,0) || \
-       defined(JSON_HEDLEY_TI_CL2000_VERSION) || \
-       defined(JSON_HEDLEY_TI_CL6X_VERSION) || \
-       defined(JSON_HEDLEY_TI_CL7X_VERSION) || \
-       defined(JSON_HEDLEY_TI_CLPRU_VERSION) || \
-       defined(__clang__)
-#    define JSON_HEDLEY_IS_CONSTEXPR_(expr) ( \
-        sizeof(void) != \
-        sizeof(*( \
-                  1 ? \
-                  ((void*) ((expr) * 0L) ) : \
-((struct { char v[sizeof(void) * 2]; } *) 1) \
-                ) \
-              ) \
-                                            )
-#  endif
-#endif
-#if defined(JSON_HEDLEY_IS_CONSTEXPR_)
-    #if !defined(JSON_HEDLEY_IS_CONSTANT)
-        #define JSON_HEDLEY_IS_CONSTANT(expr) JSON_HEDLEY_IS_CONSTEXPR_(expr)
-    #endif
-    #define JSON_HEDLEY_REQUIRE_CONSTEXPR(expr) (JSON_HEDLEY_IS_CONSTEXPR_(expr) ? (expr) : (-1))
-#else
-    #if !defined(JSON_HEDLEY_IS_CONSTANT)
-        #define JSON_HEDLEY_IS_CONSTANT(expr) (0)
-    #endif
-    #define JSON_HEDLEY_REQUIRE_CONSTEXPR(expr) (expr)
-#endif
-
-#if defined(JSON_HEDLEY_BEGIN_C_DECLS)
-    #undef JSON_HEDLEY_BEGIN_C_DECLS
-#endif
-#if defined(JSON_HEDLEY_END_C_DECLS)
-    #undef JSON_HEDLEY_END_C_DECLS
-#endif
-#if defined(JSON_HEDLEY_C_DECL)
-    #undef JSON_HEDLEY_C_DECL
-#endif
-#if defined(__cplusplus)
-    #define JSON_HEDLEY_BEGIN_C_DECLS extern "C" {
-    #define JSON_HEDLEY_END_C_DECLS }
-    #define JSON_HEDLEY_C_DECL extern "C"
-#else
-    #define JSON_HEDLEY_BEGIN_C_DECLS
-    #define JSON_HEDLEY_END_C_DECLS
-    #define JSON_HEDLEY_C_DECL
-#endif
-
-#if defined(JSON_HEDLEY_STATIC_ASSERT)
-    #undef JSON_HEDLEY_STATIC_ASSERT
-#endif
-#if \
-  !defined(__cplusplus) && ( \
-      (defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 201112L)) || \
-      (JSON_HEDLEY_HAS_FEATURE(c_static_assert) && !defined(JSON_HEDLEY_INTEL_CL_VERSION)) || \
-      JSON_HEDLEY_GCC_VERSION_CHECK(6,0,0) || \
-      JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0) || \
-      defined(_Static_assert) \
-    )
-#  define JSON_HEDLEY_STATIC_ASSERT(expr, message) _Static_assert(expr, message)
-#elif \
-  (defined(__cplusplus) && (__cplusplus >= 201103L)) || \
-  JSON_HEDLEY_MSVC_VERSION_CHECK(16,0,0) || \
-  JSON_HEDLEY_INTEL_CL_VERSION_CHECK(2021,1,0)
-#  define JSON_HEDLEY_STATIC_ASSERT(expr, message) JSON_HEDLEY_DIAGNOSTIC_DISABLE_CPP98_COMPAT_WRAP_(static_assert(expr, message))
-#else
-#  define JSON_HEDLEY_STATIC_ASSERT(expr, message)
-#endif
-
-#if defined(JSON_HEDLEY_NULL)
-    #undef JSON_HEDLEY_NULL
-#endif
-#if defined(__cplusplus)
-    #if __cplusplus >= 201103L
-        #define JSON_HEDLEY_NULL JSON_HEDLEY_DIAGNOSTIC_DISABLE_CPP98_COMPAT_WRAP_(nullptr)
-    #elif defined(NULL)
-        #define JSON_HEDLEY_NULL NULL
-    #else
-        #define JSON_HEDLEY_NULL JSON_HEDLEY_STATIC_CAST(void*, 0)
-    #endif
-#elif defined(NULL)
-    #define JSON_HEDLEY_NULL NULL
-#else
-    #define JSON_HEDLEY_NULL ((void*) 0)
-#endif
-
-#if defined(JSON_HEDLEY_MESSAGE)
-    #undef JSON_HEDLEY_MESSAGE
-#endif
-#if JSON_HEDLEY_HAS_WARNING("-Wunknown-pragmas")
-#  define JSON_HEDLEY_MESSAGE(msg) \
-    JSON_HEDLEY_DIAGNOSTIC_PUSH \
-    JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_PRAGMAS \
-    JSON_HEDLEY_PRAGMA(message msg) \
-    JSON_HEDLEY_DIAGNOSTIC_POP
-#elif \
-  JSON_HEDLEY_GCC_VERSION_CHECK(4,4,0) || \
-  JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0)
-#  define JSON_HEDLEY_MESSAGE(msg) JSON_HEDLEY_PRAGMA(message msg)
-#elif JSON_HEDLEY_CRAY_VERSION_CHECK(5,0,0)
-#  define JSON_HEDLEY_MESSAGE(msg) JSON_HEDLEY_PRAGMA(_CRI message msg)
-#elif JSON_HEDLEY_IAR_VERSION_CHECK(8,0,0)
-#  define JSON_HEDLEY_MESSAGE(msg) JSON_HEDLEY_PRAGMA(message(msg))
-#elif JSON_HEDLEY_PELLES_VERSION_CHECK(2,0,0)
-#  define JSON_HEDLEY_MESSAGE(msg) JSON_HEDLEY_PRAGMA(message(msg))
-#else
-#  define JSON_HEDLEY_MESSAGE(msg)
-#endif
-
-#if defined(JSON_HEDLEY_WARNING)
-    #undef JSON_HEDLEY_WARNING
-#endif
-#if JSON_HEDLEY_HAS_WARNING("-Wunknown-pragmas")
-#  define JSON_HEDLEY_WARNING(msg) \
-    JSON_HEDLEY_DIAGNOSTIC_PUSH \
-    JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_PRAGMAS \
-    JSON_HEDLEY_PRAGMA(clang warning msg) \
-    JSON_HEDLEY_DIAGNOSTIC_POP
-#elif \
-  JSON_HEDLEY_GCC_VERSION_CHECK(4,8,0) || \
-  JSON_HEDLEY_PGI_VERSION_CHECK(18,4,0) || \
-  JSON_HEDLEY_INTEL_VERSION_CHECK(13,0,0)
-#  define JSON_HEDLEY_WARNING(msg) JSON_HEDLEY_PRAGMA(GCC warning msg)
-#elif \
-  JSON_HEDLEY_MSVC_VERSION_CHECK(15,0,0) || \
-  JSON_HEDLEY_INTEL_CL_VERSION_CHECK(2021,1,0)
-#  define JSON_HEDLEY_WARNING(msg) JSON_HEDLEY_PRAGMA(message(msg))
-#else
-#  define JSON_HEDLEY_WARNING(msg) JSON_HEDLEY_MESSAGE(msg)
-#endif
-
-#if defined(JSON_HEDLEY_REQUIRE)
-    #undef JSON_HEDLEY_REQUIRE
-#endif
-#if defined(JSON_HEDLEY_REQUIRE_MSG)
-    #undef JSON_HEDLEY_REQUIRE_MSG
-#endif
-#if JSON_HEDLEY_HAS_ATTRIBUTE(diagnose_if)
-#  if JSON_HEDLEY_HAS_WARNING("-Wgcc-compat")
-#    define JSON_HEDLEY_REQUIRE(expr) \
-    JSON_HEDLEY_DIAGNOSTIC_PUSH \
-    _Pragma("clang diagnostic ignored \"-Wgcc-compat\"") \
-    __attribute__((diagnose_if(!(expr), #expr, "error"))) \
-    JSON_HEDLEY_DIAGNOSTIC_POP
-#    define JSON_HEDLEY_REQUIRE_MSG(expr,msg) \
-    JSON_HEDLEY_DIAGNOSTIC_PUSH \
-    _Pragma("clang diagnostic ignored \"-Wgcc-compat\"") \
-    __attribute__((diagnose_if(!(expr), msg, "error"))) \
-    JSON_HEDLEY_DIAGNOSTIC_POP
-#  else
-#    define JSON_HEDLEY_REQUIRE(expr) __attribute__((diagnose_if(!(expr), #expr, "error")))
-#    define JSON_HEDLEY_REQUIRE_MSG(expr,msg) __attribute__((diagnose_if(!(expr), msg, "error")))
-#  endif
-#else
-#  define JSON_HEDLEY_REQUIRE(expr)
-#  define JSON_HEDLEY_REQUIRE_MSG(expr,msg)
-#endif
-
-#if defined(JSON_HEDLEY_FLAGS)
-    #undef JSON_HEDLEY_FLAGS
-#endif
-#if JSON_HEDLEY_HAS_ATTRIBUTE(flag_enum) && (!defined(__cplusplus) || JSON_HEDLEY_HAS_WARNING("-Wbitfield-enum-conversion"))
-    #define JSON_HEDLEY_FLAGS __attribute__((__flag_enum__))
-#else
-    #define JSON_HEDLEY_FLAGS
-#endif
-
-#if defined(JSON_HEDLEY_FLAGS_CAST)
-    #undef JSON_HEDLEY_FLAGS_CAST
-#endif
-#if JSON_HEDLEY_INTEL_VERSION_CHECK(19,0,0)
-#  define JSON_HEDLEY_FLAGS_CAST(T, expr) (__extension__ ({ \
-        JSON_HEDLEY_DIAGNOSTIC_PUSH \
-        _Pragma("warning(disable:188)") \
-        ((T) (expr)); \
-        JSON_HEDLEY_DIAGNOSTIC_POP \
-    }))
-#else
-#  define JSON_HEDLEY_FLAGS_CAST(T, expr) JSON_HEDLEY_STATIC_CAST(T, expr)
-#endif
-
-#if defined(JSON_HEDLEY_EMPTY_BASES)
-    #undef JSON_HEDLEY_EMPTY_BASES
-#endif
-#if \
-    (JSON_HEDLEY_MSVC_VERSION_CHECK(19,0,23918) && !JSON_HEDLEY_MSVC_VERSION_CHECK(20,0,0)) || \
-    JSON_HEDLEY_INTEL_CL_VERSION_CHECK(2021,1,0)
-    #define JSON_HEDLEY_EMPTY_BASES __declspec(empty_bases)
-#else
-    #define JSON_HEDLEY_EMPTY_BASES
-#endif
-
-/* Remaining macros are deprecated. */
-
-#if defined(JSON_HEDLEY_GCC_NOT_CLANG_VERSION_CHECK)
-    #undef JSON_HEDLEY_GCC_NOT_CLANG_VERSION_CHECK
-#endif
-#if defined(__clang__)
-    #define JSON_HEDLEY_GCC_NOT_CLANG_VERSION_CHECK(major,minor,patch) (0)
-#else
-    #define JSON_HEDLEY_GCC_NOT_CLANG_VERSION_CHECK(major,minor,patch) JSON_HEDLEY_GCC_VERSION_CHECK(major,minor,patch)
-#endif
-
-#if defined(JSON_HEDLEY_CLANG_HAS_ATTRIBUTE)
-    #undef JSON_HEDLEY_CLANG_HAS_ATTRIBUTE
-#endif
-#define JSON_HEDLEY_CLANG_HAS_ATTRIBUTE(attribute) JSON_HEDLEY_HAS_ATTRIBUTE(attribute)
-
-#if defined(JSON_HEDLEY_CLANG_HAS_CPP_ATTRIBUTE)
-    #undef JSON_HEDLEY_CLANG_HAS_CPP_ATTRIBUTE
-#endif
-#define JSON_HEDLEY_CLANG_HAS_CPP_ATTRIBUTE(attribute) JSON_HEDLEY_HAS_CPP_ATTRIBUTE(attribute)
-
-#if defined(JSON_HEDLEY_CLANG_HAS_BUILTIN)
-    #undef JSON_HEDLEY_CLANG_HAS_BUILTIN
-#endif
-#define JSON_HEDLEY_CLANG_HAS_BUILTIN(builtin) JSON_HEDLEY_HAS_BUILTIN(builtin)
-
-#if defined(JSON_HEDLEY_CLANG_HAS_FEATURE)
-    #undef JSON_HEDLEY_CLANG_HAS_FEATURE
-#endif
-#define JSON_HEDLEY_CLANG_HAS_FEATURE(feature) JSON_HEDLEY_HAS_FEATURE(feature)
-
-#if defined(JSON_HEDLEY_CLANG_HAS_EXTENSION)
-    #undef JSON_HEDLEY_CLANG_HAS_EXTENSION
-#endif
-#define JSON_HEDLEY_CLANG_HAS_EXTENSION(extension) JSON_HEDLEY_HAS_EXTENSION(extension)
-
-#if defined(JSON_HEDLEY_CLANG_HAS_DECLSPEC_DECLSPEC_ATTRIBUTE)
-    #undef JSON_HEDLEY_CLANG_HAS_DECLSPEC_DECLSPEC_ATTRIBUTE
-#endif
-#define JSON_HEDLEY_CLANG_HAS_DECLSPEC_ATTRIBUTE(attribute) JSON_HEDLEY_HAS_DECLSPEC_ATTRIBUTE(attribute)
-
-#if defined(JSON_HEDLEY_CLANG_HAS_WARNING)
-    #undef JSON_HEDLEY_CLANG_HAS_WARNING
-#endif
-#define JSON_HEDLEY_CLANG_HAS_WARNING(warning) JSON_HEDLEY_HAS_WARNING(warning)
-
-#endif /* !defined(JSON_HEDLEY_VERSION) || (JSON_HEDLEY_VERSION < X) */
-
-
-// This file contains all internal macro definitions (except those affecting ABI)
-// You MUST include macro_unscope.hpp at the end of json.hpp to undef all of them
-
-// #include <nlohmann/detail/abi_macros.hpp>
-
-
-// exclude unsupported compilers
-#if !defined(JSON_SKIP_UNSUPPORTED_COMPILER_CHECK)
-    #if defined(__clang__)
-        #if (__clang_major__ * 10000 + __clang_minor__ * 100 + __clang_patchlevel__) < 30400
-            #error "unsupported Clang version - see https://github.com/nlohmann/json#supported-compilers"
-        #endif
-    #elif defined(__GNUC__) && !(defined(__ICC) || defined(__INTEL_COMPILER))
-        #if (__GNUC__ * 10000 + __GNUC_MINOR__ * 100 + __GNUC_PATCHLEVEL__) < 40800
-            #error "unsupported GCC version - see https://github.com/nlohmann/json#supported-compilers"
-        #endif
-    #endif
-#endif
-
-// C++ language standard detection
-// if the user manually specified the used c++ version this is skipped
-#if !defined(JSON_HAS_CPP_20) && !defined(JSON_HAS_CPP_17) && !defined(JSON_HAS_CPP_14) && !defined(JSON_HAS_CPP_11)
-    #if (defined(__cplusplus) && __cplusplus >= 202002L) || (defined(_MSVC_LANG) && _MSVC_LANG >= 202002L)
-        #define JSON_HAS_CPP_20
-        #define JSON_HAS_CPP_17
-        #define JSON_HAS_CPP_14
-    #elif (defined(__cplusplus) && __cplusplus >= 201703L) || (defined(_HAS_CXX17) && _HAS_CXX17 == 1) // fix for issue #464
-        #define JSON_HAS_CPP_17
-        #define JSON_HAS_CPP_14
-    #elif (defined(__cplusplus) && __cplusplus >= 201402L) || (defined(_HAS_CXX14) && _HAS_CXX14 == 1)
-        #define JSON_HAS_CPP_14
-    #endif
-    // the cpp 11 flag is always specified because it is the minimal required version
-    #define JSON_HAS_CPP_11
-#endif
-
-#ifdef __has_include
-    #if __has_include(<version>)
-        #include <version>
-    #endif
-#endif
-
-#if !defined(JSON_HAS_FILESYSTEM) && !defined(JSON_HAS_EXPERIMENTAL_FILESYSTEM)
-    #ifdef JSON_HAS_CPP_17
-        #if defined(__cpp_lib_filesystem)
-            #define JSON_HAS_FILESYSTEM 1
-        #elif defined(__cpp_lib_experimental_filesystem)
-            #define JSON_HAS_EXPERIMENTAL_FILESYSTEM 1
-        #elif !defined(__has_include)
-            #define JSON_HAS_EXPERIMENTAL_FILESYSTEM 1
-        #elif __has_include(<filesystem>)
-            #define JSON_HAS_FILESYSTEM 1
-        #elif __has_include(<experimental/filesystem>)
-            #define JSON_HAS_EXPERIMENTAL_FILESYSTEM 1
-        #endif
-
-        // std::filesystem does not work on MinGW GCC 8: https://sourceforge.net/p/mingw-w64/bugs/737/
-        #if defined(__MINGW32__) && defined(__GNUC__) && __GNUC__ == 8
-            #undef JSON_HAS_FILESYSTEM
-            #undef JSON_HAS_EXPERIMENTAL_FILESYSTEM
-        #endif
-
-        // no filesystem support before GCC 8: https://en.cppreference.com/w/cpp/compiler_support
-        #if defined(__GNUC__) && !defined(__clang__) && __GNUC__ < 8
-            #undef JSON_HAS_FILESYSTEM
-            #undef JSON_HAS_EXPERIMENTAL_FILESYSTEM
-        #endif
-
-        // no filesystem support before Clang 7: https://en.cppreference.com/w/cpp/compiler_support
-        #if defined(__clang_major__) && __clang_major__ < 7
-            #undef JSON_HAS_FILESYSTEM
-            #undef JSON_HAS_EXPERIMENTAL_FILESYSTEM
-        #endif
-
-        // no filesystem support before MSVC 19.14: https://en.cppreference.com/w/cpp/compiler_support
-        #if defined(_MSC_VER) && _MSC_VER < 1914
-            #undef JSON_HAS_FILESYSTEM
-            #undef JSON_HAS_EXPERIMENTAL_FILESYSTEM
-        #endif
-
-        // no filesystem support before iOS 13
-        #if defined(__IPHONE_OS_VERSION_MIN_REQUIRED) && __IPHONE_OS_VERSION_MIN_REQUIRED < 130000
-            #undef JSON_HAS_FILESYSTEM
-            #undef JSON_HAS_EXPERIMENTAL_FILESYSTEM
-        #endif
-
-        // no filesystem support before macOS Catalina
-        #if defined(__MAC_OS_X_VERSION_MIN_REQUIRED) && __MAC_OS_X_VERSION_MIN_REQUIRED < 101500
-            #undef JSON_HAS_FILESYSTEM
-            #undef JSON_HAS_EXPERIMENTAL_FILESYSTEM
-        #endif
-    #endif
-#endif
-
-#ifndef JSON_HAS_EXPERIMENTAL_FILESYSTEM
-    #define JSON_HAS_EXPERIMENTAL_FILESYSTEM 0
-#endif
-
-#ifndef JSON_HAS_FILESYSTEM
-    #define JSON_HAS_FILESYSTEM 0
-#endif
-
-#ifndef JSON_HAS_THREE_WAY_COMPARISON
-    #if defined(__cpp_impl_three_way_comparison) && __cpp_impl_three_way_comparison >= 201907L \
-        && defined(__cpp_lib_three_way_comparison) && __cpp_lib_three_way_comparison >= 201907L
-        #define JSON_HAS_THREE_WAY_COMPARISON 1
-    #else
-        #define JSON_HAS_THREE_WAY_COMPARISON 0
-    #endif
-#endif
-
-#ifndef JSON_HAS_RANGES
-    // ranges header shipping in GCC 11.1.0 (released 2021-04-27) has syntax error
-    #if defined(__GLIBCXX__) && __GLIBCXX__ == 20210427
-        #define JSON_HAS_RANGES 0
-    #elif defined(__cpp_lib_ranges)
-        #define JSON_HAS_RANGES 1
-    #else
-        #define JSON_HAS_RANGES 0
-    #endif
-#endif
-
-#ifdef JSON_HAS_CPP_17
-    #define JSON_INLINE_VARIABLE inline
-#else
-    #define JSON_INLINE_VARIABLE
-#endif
-
-#if JSON_HEDLEY_HAS_ATTRIBUTE(no_unique_address)
-    #define JSON_NO_UNIQUE_ADDRESS [[no_unique_address]]
-#else
-    #define JSON_NO_UNIQUE_ADDRESS
-#endif
-
-// disable documentation warnings on clang
-#if defined(__clang__)
-    #pragma clang diagnostic push
-    #pragma clang diagnostic ignored "-Wdocumentation"
-    #pragma clang diagnostic ignored "-Wdocumentation-unknown-command"
-#endif
-
-// allow disabling exceptions
-#if (defined(__cpp_exceptions) || defined(__EXCEPTIONS) || defined(_CPPUNWIND)) && !defined(JSON_NOEXCEPTION)
-    #define JSON_THROW(exception) throw exception
-    #define JSON_TRY try
-    #define JSON_CATCH(exception) catch(exception)
-    #define JSON_INTERNAL_CATCH(exception) catch(exception)
-#else
-    #include <cstdlib>
-    #define JSON_THROW(exception) std::abort()
-    #define JSON_TRY if(true)
-    #define JSON_CATCH(exception) if(false)
-    #define JSON_INTERNAL_CATCH(exception) if(false)
-#endif
-
-// override exception macros
-#if defined(JSON_THROW_USER)
-    #undef JSON_THROW
-    #define JSON_THROW JSON_THROW_USER
-#endif
-#if defined(JSON_TRY_USER)
-    #undef JSON_TRY
-    #define JSON_TRY JSON_TRY_USER
-#endif
-#if defined(JSON_CATCH_USER)
-    #undef JSON_CATCH
-    #define JSON_CATCH JSON_CATCH_USER
-    #undef JSON_INTERNAL_CATCH
-    #define JSON_INTERNAL_CATCH JSON_CATCH_USER
-#endif
-#if defined(JSON_INTERNAL_CATCH_USER)
-    #undef JSON_INTERNAL_CATCH
-    #define JSON_INTERNAL_CATCH JSON_INTERNAL_CATCH_USER
-#endif
-
-// allow overriding assert
-#if !defined(JSON_ASSERT)
-    #include <cassert> // assert
-    #define JSON_ASSERT(x) assert(x)
-#endif
-
-// allow to access some private functions (needed by the test suite)
-#if defined(JSON_TESTS_PRIVATE)
-    #define JSON_PRIVATE_UNLESS_TESTED public
-#else
-    #define JSON_PRIVATE_UNLESS_TESTED private
-#endif
-
-/*!
-@brief macro to briefly define a mapping between an enum and JSON
-@def NLOHMANN_JSON_SERIALIZE_ENUM
-@since version 3.4.0
-*/
-#define NLOHMANN_JSON_SERIALIZE_ENUM(ENUM_TYPE, ...)                                            \
-    template<typename BasicJsonType>                                                            \
-    inline void to_json(BasicJsonType& j, const ENUM_TYPE& e)                                   \
-    {                                                                                           \
-        static_assert(std::is_enum<ENUM_TYPE>::value, #ENUM_TYPE " must be an enum!");          \
-        static const std::pair<ENUM_TYPE, BasicJsonType> m[] = __VA_ARGS__;                     \
-        auto it = std::find_if(std::begin(m), std::end(m),                                      \
-                               [e](const std::pair<ENUM_TYPE, BasicJsonType>& ej_pair) -> bool  \
-        {                                                                                       \
-            return ej_pair.first == e;                                                          \
-        });                                                                                     \
-        j = ((it != std::end(m)) ? it : std::begin(m))->second;                                 \
-    }                                                                                           \
-    template<typename BasicJsonType>                                                            \
-    inline void from_json(const BasicJsonType& j, ENUM_TYPE& e)                                 \
-    {                                                                                           \
-        static_assert(std::is_enum<ENUM_TYPE>::value, #ENUM_TYPE " must be an enum!");          \
-        static const std::pair<ENUM_TYPE, BasicJsonType> m[] = __VA_ARGS__;                     \
-        auto it = std::find_if(std::begin(m), std::end(m),                                      \
-                               [&j](const std::pair<ENUM_TYPE, BasicJsonType>& ej_pair) -> bool \
-        {                                                                                       \
-            return ej_pair.second == j;                                                         \
-        });                                                                                     \
-        e = ((it != std::end(m)) ? it : std::begin(m))->first;                                  \
-    }
-
-// Ugly macros to avoid uglier copy-paste when specializing basic_json. They
-// may be removed in the future once the class is split.
-
-#define NLOHMANN_BASIC_JSON_TPL_DECLARATION                                \
-    template<template<typename, typename, typename...> class ObjectType,   \
-             template<typename, typename...> class ArrayType,              \
-             class StringType, class BooleanType, class NumberIntegerType, \
-             class NumberUnsignedType, class NumberFloatType,              \
-             template<typename> class AllocatorType,                       \
-             template<typename, typename = void> class JSONSerializer,     \
-             class BinaryType,                                             \
-             class CustomBaseClass>
-
-#define NLOHMANN_BASIC_JSON_TPL                                            \
-    basic_json<ObjectType, ArrayType, StringType, BooleanType,             \
-    NumberIntegerType, NumberUnsignedType, NumberFloatType,                \
-    AllocatorType, JSONSerializer, BinaryType, CustomBaseClass>
-
-// Macros to simplify conversion from/to types
-
-#define NLOHMANN_JSON_EXPAND( x ) x
-#define NLOHMANN_JSON_GET_MACRO(_1, _2, _3, _4, _5, _6, _7, _8, _9, _10, _11, _12, _13, _14, _15, _16, _17, _18, _19, _20, _21, _22, _23, _24, _25, _26, _27, _28, _29, _30, _31, _32, _33, _34, _35, _36, _37, _38, _39, _40, _41, _42, _43, _44, _45, _46, _47, _48, _49, _50, _51, _52, _53, _54, _55, _56, _57, _58, _59, _60, _61, _62, _63, _64, NAME,...) NAME
-#define NLOHMANN_JSON_PASTE(...) NLOHMANN_JSON_EXPAND(NLOHMANN_JSON_GET_MACRO(__VA_ARGS__, \
-        NLOHMANN_JSON_PASTE64, \
-        NLOHMANN_JSON_PASTE63, \
-        NLOHMANN_JSON_PASTE62, \
-        NLOHMANN_JSON_PASTE61, \
-        NLOHMANN_JSON_PASTE60, \
-        NLOHMANN_JSON_PASTE59, \
-        NLOHMANN_JSON_PASTE58, \
-        NLOHMANN_JSON_PASTE57, \
-        NLOHMANN_JSON_PASTE56, \
-        NLOHMANN_JSON_PASTE55, \
-        NLOHMANN_JSON_PASTE54, \
-        NLOHMANN_JSON_PASTE53, \
-        NLOHMANN_JSON_PASTE52, \
-        NLOHMANN_JSON_PASTE51, \
-        NLOHMANN_JSON_PASTE50, \
-        NLOHMANN_JSON_PASTE49, \
-        NLOHMANN_JSON_PASTE48, \
-        NLOHMANN_JSON_PASTE47, \
-        NLOHMANN_JSON_PASTE46, \
-        NLOHMANN_JSON_PASTE45, \
-        NLOHMANN_JSON_PASTE44, \
-        NLOHMANN_JSON_PASTE43, \
-        NLOHMANN_JSON_PASTE42, \
-        NLOHMANN_JSON_PASTE41, \
-        NLOHMANN_JSON_PASTE40, \
-        NLOHMANN_JSON_PASTE39, \
-        NLOHMANN_JSON_PASTE38, \
-        NLOHMANN_JSON_PASTE37, \
-        NLOHMANN_JSON_PASTE36, \
-        NLOHMANN_JSON_PASTE35, \
-        NLOHMANN_JSON_PASTE34, \
-        NLOHMANN_JSON_PASTE33, \
-        NLOHMANN_JSON_PASTE32, \
-        NLOHMANN_JSON_PASTE31, \
-        NLOHMANN_JSON_PASTE30, \
-        NLOHMANN_JSON_PASTE29, \
-        NLOHMANN_JSON_PASTE28, \
-        NLOHMANN_JSON_PASTE27, \
-        NLOHMANN_JSON_PASTE26, \
-        NLOHMANN_JSON_PASTE25, \
-        NLOHMANN_JSON_PASTE24, \
-        NLOHMANN_JSON_PASTE23, \
-        NLOHMANN_JSON_PASTE22, \
-        NLOHMANN_JSON_PASTE21, \
-        NLOHMANN_JSON_PASTE20, \
-        NLOHMANN_JSON_PASTE19, \
-        NLOHMANN_JSON_PASTE18, \
-        NLOHMANN_JSON_PASTE17, \
-        NLOHMANN_JSON_PASTE16, \
-        NLOHMANN_JSON_PASTE15, \
-        NLOHMANN_JSON_PASTE14, \
-        NLOHMANN_JSON_PASTE13, \
-        NLOHMANN_JSON_PASTE12, \
-        NLOHMANN_JSON_PASTE11, \
-        NLOHMANN_JSON_PASTE10, \
-        NLOHMANN_JSON_PASTE9, \
-        NLOHMANN_JSON_PASTE8, \
-        NLOHMANN_JSON_PASTE7, \
-        NLOHMANN_JSON_PASTE6, \
-        NLOHMANN_JSON_PASTE5, \
-        NLOHMANN_JSON_PASTE4, \
-        NLOHMANN_JSON_PASTE3, \
-        NLOHMANN_JSON_PASTE2, \
-        NLOHMANN_JSON_PASTE1)(__VA_ARGS__))
-#define NLOHMANN_JSON_PASTE2(func, v1) func(v1)
-#define NLOHMANN_JSON_PASTE3(func, v1, v2) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE2(func, v2)
-#define NLOHMANN_JSON_PASTE4(func, v1, v2, v3) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE3(func, v2, v3)
-#define NLOHMANN_JSON_PASTE5(func, v1, v2, v3, v4) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE4(func, v2, v3, v4)
-#define NLOHMANN_JSON_PASTE6(func, v1, v2, v3, v4, v5) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE5(func, v2, v3, v4, v5)
-#define NLOHMANN_JSON_PASTE7(func, v1, v2, v3, v4, v5, v6) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE6(func, v2, v3, v4, v5, v6)
-#define NLOHMANN_JSON_PASTE8(func, v1, v2, v3, v4, v5, v6, v7) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE7(func, v2, v3, v4, v5, v6, v7)
-#define NLOHMANN_JSON_PASTE9(func, v1, v2, v3, v4, v5, v6, v7, v8) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE8(func, v2, v3, v4, v5, v6, v7, v8)
-#define NLOHMANN_JSON_PASTE10(func, v1, v2, v3, v4, v5, v6, v7, v8, v9) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE9(func, v2, v3, v4, v5, v6, v7, v8, v9)
-#define NLOHMANN_JSON_PASTE11(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE10(func, v2, v3, v4, v5, v6, v7, v8, v9, v10)
-#define NLOHMANN_JSON_PASTE12(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE11(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11)
-#define NLOHMANN_JSON_PASTE13(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE12(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12)
-#define NLOHMANN_JSON_PASTE14(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE13(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13)
-#define NLOHMANN_JSON_PASTE15(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE14(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14)
-#define NLOHMANN_JSON_PASTE16(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE15(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15)
-#define NLOHMANN_JSON_PASTE17(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE16(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16)
-#define NLOHMANN_JSON_PASTE18(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE17(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17)
-#define NLOHMANN_JSON_PASTE19(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE18(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18)
-#define NLOHMANN_JSON_PASTE20(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE19(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19)
-#define NLOHMANN_JSON_PASTE21(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE20(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20)
-#define NLOHMANN_JSON_PASTE22(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE21(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21)
-#define NLOHMANN_JSON_PASTE23(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE22(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22)
-#define NLOHMANN_JSON_PASTE24(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE23(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23)
-#define NLOHMANN_JSON_PASTE25(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE24(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24)
-#define NLOHMANN_JSON_PASTE26(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE25(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25)
-#define NLOHMANN_JSON_PASTE27(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE26(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26)
-#define NLOHMANN_JSON_PASTE28(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE27(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27)
-#define NLOHMANN_JSON_PASTE29(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE28(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28)
-#define NLOHMANN_JSON_PASTE30(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE29(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29)
-#define NLOHMANN_JSON_PASTE31(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE30(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30)
-#define NLOHMANN_JSON_PASTE32(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE31(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31)
-#define NLOHMANN_JSON_PASTE33(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE32(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32)
-#define NLOHMANN_JSON_PASTE34(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE33(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33)
-#define NLOHMANN_JSON_PASTE35(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE34(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34)
-#define NLOHMANN_JSON_PASTE36(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE35(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35)
-#define NLOHMANN_JSON_PASTE37(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE36(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36)
-#define NLOHMANN_JSON_PASTE38(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE37(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37)
-#define NLOHMANN_JSON_PASTE39(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE38(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38)
-#define NLOHMANN_JSON_PASTE40(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE39(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39)
-#define NLOHMANN_JSON_PASTE41(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE40(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40)
-#define NLOHMANN_JSON_PASTE42(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE41(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41)
-#define NLOHMANN_JSON_PASTE43(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE42(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42)
-#define NLOHMANN_JSON_PASTE44(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE43(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43)
-#define NLOHMANN_JSON_PASTE45(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE44(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44)
-#define NLOHMANN_JSON_PASTE46(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE45(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45)
-#define NLOHMANN_JSON_PASTE47(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE46(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46)
-#define NLOHMANN_JSON_PASTE48(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE47(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47)
-#define NLOHMANN_JSON_PASTE49(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE48(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48)
-#define NLOHMANN_JSON_PASTE50(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE49(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49)
-#define NLOHMANN_JSON_PASTE51(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE50(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50)
-#define NLOHMANN_JSON_PASTE52(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE51(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51)
-#define NLOHMANN_JSON_PASTE53(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE52(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52)
-#define NLOHMANN_JSON_PASTE54(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE53(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53)
-#define NLOHMANN_JSON_PASTE55(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53, v54) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE54(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53, v54)
-#define NLOHMANN_JSON_PASTE56(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53, v54, v55) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE55(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53, v54, v55)
-#define NLOHMANN_JSON_PASTE57(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53, v54, v55, v56) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE56(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53, v54, v55, v56)
-#define NLOHMANN_JSON_PASTE58(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53, v54, v55, v56, v57) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE57(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53, v54, v55, v56, v57)
-#define NLOHMANN_JSON_PASTE59(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53, v54, v55, v56, v57, v58) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE58(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53, v54, v55, v56, v57, v58)
-#define NLOHMANN_JSON_PASTE60(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53, v54, v55, v56, v57, v58, v59) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE59(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53, v54, v55, v56, v57, v58, v59)
-#define NLOHMANN_JSON_PASTE61(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53, v54, v55, v56, v57, v58, v59, v60) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE60(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53, v54, v55, v56, v57, v58, v59, v60)
-#define NLOHMANN_JSON_PASTE62(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53, v54, v55, v56, v57, v58, v59, v60, v61) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE61(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53, v54, v55, v56, v57, v58, v59, v60, v61)
-#define NLOHMANN_JSON_PASTE63(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53, v54, v55, v56, v57, v58, v59, v60, v61, v62) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE62(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53, v54, v55, v56, v57, v58, v59, v60, v61, v62)
-#define NLOHMANN_JSON_PASTE64(func, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53, v54, v55, v56, v57, v58, v59, v60, v61, v62, v63) NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE63(func, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15, v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, v32, v33, v34, v35, v36, v37, v38, v39, v40, v41, v42, v43, v44, v45, v46, v47, v48, v49, v50, v51, v52, v53, v54, v55, v56, v57, v58, v59, v60, v61, v62, v63)
-
-#define NLOHMANN_JSON_TO(v1) nlohmann_json_j[#v1] = nlohmann_json_t.v1;
-#define NLOHMANN_JSON_FROM(v1) nlohmann_json_j.at(#v1).get_to(nlohmann_json_t.v1);
-#define NLOHMANN_JSON_FROM_WITH_DEFAULT(v1) nlohmann_json_t.v1 = nlohmann_json_j.value(#v1, nlohmann_json_default_obj.v1);
-
-/*!
-@brief macro
-@def NLOHMANN_DEFINE_TYPE_INTRUSIVE
-@since version 3.9.0
-*/
-#define NLOHMANN_DEFINE_TYPE_INTRUSIVE(Type, ...)  \
-    friend void to_json(nlohmann::json& nlohmann_json_j, const Type& nlohmann_json_t) { NLOHMANN_JSON_EXPAND(NLOHMANN_JSON_PASTE(NLOHMANN_JSON_TO, __VA_ARGS__)) } \
-    friend void from_json(const nlohmann::json& nlohmann_json_j, Type& nlohmann_json_t) { NLOHMANN_JSON_EXPAND(NLOHMANN_JSON_PASTE(NLOHMANN_JSON_FROM, __VA_ARGS__)) }
-
-#define NLOHMANN_DEFINE_TYPE_INTRUSIVE_WITH_DEFAULT(Type, ...)  \
-    friend void to_json(nlohmann::json& nlohmann_json_j, const Type& nlohmann_json_t) { NLOHMANN_JSON_EXPAND(NLOHMANN_JSON_PASTE(NLOHMANN_JSON_TO, __VA_ARGS__)) } \
-    friend void from_json(const nlohmann::json& nlohmann_json_j, Type& nlohmann_json_t) { const Type nlohmann_json_default_obj{}; NLOHMANN_JSON_EXPAND(NLOHMANN_JSON_PASTE(NLOHMANN_JSON_FROM_WITH_DEFAULT, __VA_ARGS__)) }
-
-/*!
-@brief macro
-@def NLOHMANN_DEFINE_TYPE_NON_INTRUSIVE
-@since version 3.9.0
-*/
-#define NLOHMANN_DEFINE_TYPE_NON_INTRUSIVE(Type, ...)  \
-    inline void to_json(nlohmann::json& nlohmann_json_j, const Type& nlohmann_json_t) { NLOHMANN_JSON_EXPAND(NLOHMANN_JSON_PASTE(NLOHMANN_JSON_TO, __VA_ARGS__)) } \
-    inline void from_json(const nlohmann::json& nlohmann_json_j, Type& nlohmann_json_t) { NLOHMANN_JSON_EXPAND(NLOHMANN_JSON_PASTE(NLOHMANN_JSON_FROM, __VA_ARGS__)) }
-
-#define NLOHMANN_DEFINE_TYPE_NON_INTRUSIVE_WITH_DEFAULT(Type, ...)  \
-    inline void to_json(nlohmann::json& nlohmann_json_j, const Type& nlohmann_json_t) { NLOHMANN_JSON_EXPAND(NLOHMANN_JSON_PASTE(NLOHMANN_JSON_TO, __VA_ARGS__)) } \
-    inline void from_json(const nlohmann::json& nlohmann_json_j, Type& nlohmann_json_t) { const Type nlohmann_json_default_obj{}; NLOHMANN_JSON_EXPAND(NLOHMANN_JSON_PASTE(NLOHMANN_JSON_FROM_WITH_DEFAULT, __VA_ARGS__)) }
-
-
-// inspired from https://stackoverflow.com/a/26745591
-// allows to call any std function as if (e.g. with begin):
-// using std::begin; begin(x);
-//
-// it allows using the detected idiom to retrieve the return type
-// of such an expression
-#define NLOHMANN_CAN_CALL_STD_FUNC_IMPL(std_name)                                 \
-    namespace detail {                                                            \
-    using std::std_name;                                                          \
-    \
-    template<typename... T>                                                       \
-    using result_of_##std_name = decltype(std_name(std::declval<T>()...));        \
-    }                                                                             \
-    \
-    namespace detail2 {                                                           \
-    struct std_name##_tag                                                         \
-    {                                                                             \
-    };                                                                            \
-    \
-    template<typename... T>                                                       \
-    std_name##_tag std_name(T&&...);                                              \
-    \
-    template<typename... T>                                                       \
-    using result_of_##std_name = decltype(std_name(std::declval<T>()...));        \
-    \
-    template<typename... T>                                                       \
-    struct would_call_std_##std_name                                              \
-    {                                                                             \
-        static constexpr auto const value = ::nlohmann::detail::                  \
-                                            is_detected_exact<std_name##_tag, result_of_##std_name, T...>::value; \
-    };                                                                            \
-    } /* namespace detail2 */ \
-    \
-    template<typename... T>                                                       \
-    struct would_call_std_##std_name : detail2::would_call_std_##std_name<T...>   \
-    {                                                                             \
-    }
-
-#ifndef JSON_USE_IMPLICIT_CONVERSIONS
-    #define JSON_USE_IMPLICIT_CONVERSIONS 1
-#endif
-
-#if JSON_USE_IMPLICIT_CONVERSIONS
-    #define JSON_EXPLICIT
-#else
-    #define JSON_EXPLICIT explicit
-#endif
-
-#ifndef JSON_DISABLE_ENUM_SERIALIZATION
-    #define JSON_DISABLE_ENUM_SERIALIZATION 0
-#endif
-
-#ifndef JSON_USE_GLOBAL_UDLS
-    #define JSON_USE_GLOBAL_UDLS 1
-#endif
-
-#if JSON_HAS_THREE_WAY_COMPARISON
-    #include <compare> // partial_ordering
-#endif
-
-NLOHMANN_JSON_NAMESPACE_BEGIN
-namespace detail
-{
-
-///////////////////////////
-// JSON type enumeration //
-///////////////////////////
-
-/*!
-@brief the JSON type enumeration
-
-This enumeration collects the different JSON types. It is internally used to
-distinguish the stored values, and the functions @ref basic_json::is_null(),
-@ref basic_json::is_object(), @ref basic_json::is_array(),
-@ref basic_json::is_string(), @ref basic_json::is_boolean(),
-@ref basic_json::is_number() (with @ref basic_json::is_number_integer(),
-@ref basic_json::is_number_unsigned(), and @ref basic_json::is_number_float()),
-@ref basic_json::is_discarded(), @ref basic_json::is_primitive(), and
-@ref basic_json::is_structured() rely on it.
-
-@note There are three enumeration entries (number_integer, number_unsigned, and
-number_float), because the library distinguishes these three types for numbers:
-@ref basic_json::number_unsigned_t is used for unsigned integers,
-@ref basic_json::number_integer_t is used for signed integers, and
-@ref basic_json::number_float_t is used for floating-point numbers or to
-approximate integers which do not fit in the limits of their respective type.
-
-@sa see @ref basic_json::basic_json(const value_t value_type) -- create a JSON
-value with the default value for a given type
-
-@since version 1.0.0
-*/
-enum class value_t : std::uint8_t
-{
-    null,             ///< null value
-    object,           ///< object (unordered set of name/value pairs)
-    array,            ///< array (ordered collection of values)
-    string,           ///< string value
-    boolean,          ///< boolean value
-    number_integer,   ///< number value (signed integer)
-    number_unsigned,  ///< number value (unsigned integer)
-    number_float,     ///< number value (floating-point)
-    binary,           ///< binary array (ordered collection of bytes)
-    discarded         ///< discarded by the parser callback function
-};
-
-/*!
-@brief comparison operator for JSON types
-
-Returns an ordering that is similar to Python:
-- order: null < boolean < number < object < array < string < binary
-- furthermore, each type is not smaller than itself
-- discarded values are not comparable
-- binary is represented as a b"" string in python and directly comparable to a
-  string; however, making a binary array directly comparable with a string would
-  be surprising behavior in a JSON file.
-
-@since version 1.0.0
-*/
-#if JSON_HAS_THREE_WAY_COMPARISON
-    inline std::partial_ordering operator<=>(const value_t lhs, const value_t rhs) noexcept // *NOPAD*
-#else
-    inline bool operator<(const value_t lhs, const value_t rhs) noexcept
-#endif
-{
-    static constexpr std::array<std::uint8_t, 9> order = {{
-            0 /* null */, 3 /* object */, 4 /* array */, 5 /* string */,
-            1 /* boolean */, 2 /* integer */, 2 /* unsigned */, 2 /* float */,
-            6 /* binary */
-        }
-    };
-
-    const auto l_index = static_cast<std::size_t>(lhs);
-    const auto r_index = static_cast<std::size_t>(rhs);
-#if JSON_HAS_THREE_WAY_COMPARISON
-    if (l_index < order.size() && r_index < order.size())
-    {
-        return order[l_index] <=> order[r_index]; // *NOPAD*
-    }
-    return std::partial_ordering::unordered;
-#else
-    return l_index < order.size() && r_index < order.size() && order[l_index] < order[r_index];
-#endif
-}
-
-// GCC selects the built-in operator< over an operator rewritten from
-// a user-defined spaceship operator
-// Clang, MSVC, and ICC select the rewritten candidate
-// (see GCC bug https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105200)
-#if JSON_HAS_THREE_WAY_COMPARISON && defined(__GNUC__)
-inline bool operator<(const value_t lhs, const value_t rhs) noexcept
-{
-    return std::is_lt(lhs <=> rhs); // *NOPAD*
-}
-#endif
-
-}  // namespace detail
-NLOHMANN_JSON_NAMESPACE_END
-
-// #include <nlohmann/detail/string_escape.hpp>
-//     __ _____ _____ _____
-//  __|  |   __|     |   | |  JSON for Modern C++
-// |  |  |__   |  |  | | | |  version 3.11.2
-// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
-//
-// SPDX-FileCopyrightText: 2013-2022 Niels Lohmann <https://nlohmann.me>
-// SPDX-License-Identifier: MIT
-
-
-
-// #include <nlohmann/detail/abi_macros.hpp>
-
-
-NLOHMANN_JSON_NAMESPACE_BEGIN
-namespace detail
-{
-
-/*!
-@brief replace all occurrences of a substring by another string
-
-@param[in,out] s  the string to manipulate; changed so that all
-               occurrences of @a f are replaced with @a t
-@param[in]     f  the substring to replace with @a t
-@param[in]     t  the string to replace @a f
-
-@pre The search string @a f must not be empty. **This precondition is
-enforced with an assertion.**
-
-@since version 2.0.0
-*/
-template<typename StringType>
-inline void replace_substring(StringType& s, const StringType& f,
-                              const StringType& t)
-{
-    JSON_ASSERT(!f.empty());
-    for (auto pos = s.find(f);                // find first occurrence of f
-            pos != StringType::npos;          // make sure f was found
-            s.replace(pos, f.size(), t),      // replace with t, and
-            pos = s.find(f, pos + t.size()))  // find next occurrence of f
-    {}
-}
-
-/*!
- * @brief string escaping as described in RFC 6901 (Sect. 4)
- * @param[in] s string to escape
- * @return    escaped string
- *
- * Note the order of escaping "~" to "~0" and "/" to "~1" is important.
- */
-template<typename StringType>
-inline StringType escape(StringType s)
-{
-    replace_substring(s, StringType{"~"}, StringType{"~0"});
-    replace_substring(s, StringType{"/"}, StringType{"~1"});
-    return s;
-}
-
-/*!
- * @brief string unescaping as described in RFC 6901 (Sect. 4)
- * @param[in] s string to unescape
- * @return    unescaped string
- *
- * Note the order of escaping "~1" to "/" and "~0" to "~" is important.
- */
-template<typename StringType>
-static void unescape(StringType& s)
-{
-    replace_substring(s, StringType{"~1"}, StringType{"/"});
-    replace_substring(s, StringType{"~0"}, StringType{"~"});
-}
-
-}  // namespace detail
-NLOHMANN_JSON_NAMESPACE_END
-
-// #include <nlohmann/detail/input/position_t.hpp>
-//     __ _____ _____ _____
-//  __|  |   __|     |   | |  JSON for Modern C++
-// |  |  |__   |  |  | | | |  version 3.11.2
-// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
-//
-// SPDX-FileCopyrightText: 2013-2022 Niels Lohmann <https://nlohmann.me>
-// SPDX-License-Identifier: MIT
-
-
-
-#include <cstddef> // size_t
-
-// #include <nlohmann/detail/abi_macros.hpp>
-
-
-NLOHMANN_JSON_NAMESPACE_BEGIN
-namespace detail
-{
-
-/// struct to capture the start position of the current token
-struct position_t
-{
-    /// the total number of characters read
-    std::size_t chars_read_total = 0;
-    /// the number of characters read in the current line
-    std::size_t chars_read_current_line = 0;
-    /// the number of lines read
-    std::size_t lines_read = 0;
-
-    /// conversion to size_t to preserve SAX interface
-    constexpr operator size_t() const
-    {
-        return chars_read_total;
-    }
-};
-
-}  // namespace detail
-NLOHMANN_JSON_NAMESPACE_END
-
-// #include <nlohmann/detail/macro_scope.hpp>
-
-// #include <nlohmann/detail/meta/cpp_future.hpp>
-//     __ _____ _____ _____
-//  __|  |   __|     |   | |  JSON for Modern C++
-// |  |  |__   |  |  | | | |  version 3.11.2
-// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
-//
-// SPDX-FileCopyrightText: 2013-2022 Niels Lohmann <https://nlohmann.me>
-// SPDX-FileCopyrightText: 2018 The Abseil Authors
-// SPDX-License-Identifier: MIT
-
-
-
-#include <array> // array
-#include <cstddef> // size_t
-#include <type_traits> // conditional, enable_if, false_type, integral_constant, is_constructible, is_integral, is_same, remove_cv, remove_reference, true_type
-#include <utility> // index_sequence, make_index_sequence, index_sequence_for
-
-// #include <nlohmann/detail/macro_scope.hpp>
-
-
-NLOHMANN_JSON_NAMESPACE_BEGIN
-namespace detail
-{
-
-template<typename T>
-using uncvref_t = typename std::remove_cv<typename std::remove_reference<T>::type>::type;
-
-#ifdef JSON_HAS_CPP_14
-
-// the following utilities are natively available in C++14
-using std::enable_if_t;
-using std::index_sequence;
-using std::make_index_sequence;
-using std::index_sequence_for;
-
-#else
-
-// alias templates to reduce boilerplate
-template<bool B, typename T = void>
-using enable_if_t = typename std::enable_if<B, T>::type;
-
-// The following code is taken from https://github.com/abseil/abseil-cpp/blob/10cb35e459f5ecca5b2ff107635da0bfa41011b4/absl/utility/utility.h
-// which is part of Google Abseil (https://github.com/abseil/abseil-cpp), licensed under the Apache License 2.0.
-
-//// START OF CODE FROM GOOGLE ABSEIL
-
-// integer_sequence
-//
-// Class template representing a compile-time integer sequence. An instantiation
-// of `integer_sequence<T, Ints...>` has a sequence of integers encoded in its
-// type through its template arguments (which is a common need when
-// working with C++11 variadic templates). `absl::integer_sequence` is designed
-// to be a drop-in replacement for C++14's `std::integer_sequence`.
-//
-// Example:
-//
-//   template< class T, T... Ints >
-//   void user_function(integer_sequence<T, Ints...>);
-//
-//   int main()
-//   {
-//     // user_function's `T` will be deduced to `int` and `Ints...`
-//     // will be deduced to `0, 1, 2, 3, 4`.
-//     user_function(make_integer_sequence<int, 5>());
-//   }
-template <typename T, T... Ints>
-struct integer_sequence
-{
-    using value_type = T;
-    static constexpr std::size_t size() noexcept
-    {
-        return sizeof...(Ints);
-    }
-};
-
-// index_sequence
-//
-// A helper template for an `integer_sequence` of `size_t`,
-// `absl::index_sequence` is designed to be a drop-in replacement for C++14's
-// `std::index_sequence`.
-template <size_t... Ints>
-using index_sequence = integer_sequence<size_t, Ints...>;
-
-namespace utility_internal
-{
-
-template <typename Seq, size_t SeqSize, size_t Rem>
-struct Extend;
-
-// Note that SeqSize == sizeof...(Ints). It's passed explicitly for efficiency.
-template <typename T, T... Ints, size_t SeqSize>
-struct Extend<integer_sequence<T, Ints...>, SeqSize, 0>
-{
-    using type = integer_sequence < T, Ints..., (Ints + SeqSize)... >;
-};
-
-template <typename T, T... Ints, size_t SeqSize>
-struct Extend<integer_sequence<T, Ints...>, SeqSize, 1>
-{
-    using type = integer_sequence < T, Ints..., (Ints + SeqSize)..., 2 * SeqSize >;
-};
-
-// Recursion helper for 'make_integer_sequence<T, N>'.
-// 'Gen<T, N>::type' is an alias for 'integer_sequence<T, 0, 1, ... N-1>'.
-template <typename T, size_t N>
-struct Gen
-{
-    using type =
-        typename Extend < typename Gen < T, N / 2 >::type, N / 2, N % 2 >::type;
-};
-
-template <typename T>
-struct Gen<T, 0>
-{
-    using type = integer_sequence<T>;
-};
-
-}  // namespace utility_internal
-
-// Compile-time sequences of integers
-
-// make_integer_sequence
-//
-// This template alias is equivalent to
-// `integer_sequence<int, 0, 1, ..., N-1>`, and is designed to be a drop-in
-// replacement for C++14's `std::make_integer_sequence`.
-template <typename T, T N>
-using make_integer_sequence = typename utility_internal::Gen<T, N>::type;
-
-// make_index_sequence
-//
-// This template alias is equivalent to `index_sequence<0, 1, ..., N-1>`,
-// and is designed to be a drop-in replacement for C++14's
-// `std::make_index_sequence`.
-template <size_t N>
-using make_index_sequence = make_integer_sequence<size_t, N>;
-
-// index_sequence_for
-//
-// Converts a typename pack into an index sequence of the same length, and
-// is designed to be a drop-in replacement for C++14's
-// `std::index_sequence_for()`
-template <typename... Ts>
-using index_sequence_for = make_index_sequence<sizeof...(Ts)>;
-
-//// END OF CODE FROM GOOGLE ABSEIL
-
-#endif
-
-// dispatch utility (taken from ranges-v3)
-template<unsigned N> struct priority_tag : priority_tag < N - 1 > {};
-template<> struct priority_tag<0> {};
-
-// taken from ranges-v3
-template<typename T>
-struct static_const
-{
-    static JSON_INLINE_VARIABLE constexpr T value{};
-};
-
-#ifndef JSON_HAS_CPP_17
-    template<typename T>
-    constexpr T static_const<T>::value;
-#endif
-
-template<typename T, typename... Args>
-inline constexpr std::array<T, sizeof...(Args)> make_array(Args&& ... args)
-{
-    return std::array<T, sizeof...(Args)> {{static_cast<T>(std::forward<Args>(args))...}};
-}
-
-}  // namespace detail
-NLOHMANN_JSON_NAMESPACE_END
-
-// #include <nlohmann/detail/meta/type_traits.hpp>
-//     __ _____ _____ _____
-//  __|  |   __|     |   | |  JSON for Modern C++
-// |  |  |__   |  |  | | | |  version 3.11.2
-// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
-//
-// SPDX-FileCopyrightText: 2013-2022 Niels Lohmann <https://nlohmann.me>
-// SPDX-License-Identifier: MIT
-
-
-
-#include <limits> // numeric_limits
-#include <type_traits> // false_type, is_constructible, is_integral, is_same, true_type
-#include <utility> // declval
-#include <tuple> // tuple
-
-// #include <nlohmann/detail/iterators/iterator_traits.hpp>
-//     __ _____ _____ _____
-//  __|  |   __|     |   | |  JSON for Modern C++
-// |  |  |__   |  |  | | | |  version 3.11.2
-// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
-//
-// SPDX-FileCopyrightText: 2013-2022 Niels Lohmann <https://nlohmann.me>
-// SPDX-License-Identifier: MIT
-
-
-
-#include <iterator> // random_access_iterator_tag
-
-// #include <nlohmann/detail/abi_macros.hpp>
-
-// #include <nlohmann/detail/meta/void_t.hpp>
-
-// #include <nlohmann/detail/meta/cpp_future.hpp>
-
-
-NLOHMANN_JSON_NAMESPACE_BEGIN
-namespace detail
-{
-
-template<typename It, typename = void>
-struct iterator_types {};
-
-template<typename It>
-struct iterator_types <
-    It,
-    void_t<typename It::difference_type, typename It::value_type, typename It::pointer,
-    typename It::reference, typename It::iterator_category >>
-{
-    using difference_type = typename It::difference_type;
-    using value_type = typename It::value_type;
-    using pointer = typename It::pointer;
-    using reference = typename It::reference;
-    using iterator_category = typename It::iterator_category;
-};
-
-// This is required as some compilers implement std::iterator_traits in a way that
-// doesn't work with SFINAE. See https://github.com/nlohmann/json/issues/1341.
-template<typename T, typename = void>
-struct iterator_traits
-{
-};
-
-template<typename T>
-struct iterator_traits < T, enable_if_t < !std::is_pointer<T>::value >>
-            : iterator_types<T>
-{
-};
-
-template<typename T>
-struct iterator_traits<T*, enable_if_t<std::is_object<T>::value>>
-{
-    using iterator_category = std::random_access_iterator_tag;
-    using value_type = T;
-    using difference_type = ptrdiff_t;
-    using pointer = T*;
-    using reference = T&;
-};
-
-}  // namespace detail
-NLOHMANN_JSON_NAMESPACE_END
-
-// #include <nlohmann/detail/macro_scope.hpp>
-
-// #include <nlohmann/detail/meta/call_std/begin.hpp>
-//     __ _____ _____ _____
-//  __|  |   __|     |   | |  JSON for Modern C++
-// |  |  |__   |  |  | | | |  version 3.11.2
-// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
-//
-// SPDX-FileCopyrightText: 2013-2022 Niels Lohmann <https://nlohmann.me>
-// SPDX-License-Identifier: MIT
-
-
-
-// #include <nlohmann/detail/macro_scope.hpp>
-
-
-NLOHMANN_JSON_NAMESPACE_BEGIN
-
-NLOHMANN_CAN_CALL_STD_FUNC_IMPL(begin);
-
-NLOHMANN_JSON_NAMESPACE_END
-
-// #include <nlohmann/detail/meta/call_std/end.hpp>
-//     __ _____ _____ _____
-//  __|  |   __|     |   | |  JSON for Modern C++
-// |  |  |__   |  |  | | | |  version 3.11.2
-// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
-//
-// SPDX-FileCopyrightText: 2013-2022 Niels Lohmann <https://nlohmann.me>
-// SPDX-License-Identifier: MIT
-
-
-
-// #include <nlohmann/detail/macro_scope.hpp>
-
-
-NLOHMANN_JSON_NAMESPACE_BEGIN
-
-NLOHMANN_CAN_CALL_STD_FUNC_IMPL(end);
-
-NLOHMANN_JSON_NAMESPACE_END
-
-// #include <nlohmann/detail/meta/cpp_future.hpp>
-
-// #include <nlohmann/detail/meta/detected.hpp>
-
-// #include <nlohmann/json_fwd.hpp>
-//     __ _____ _____ _____
-//  __|  |   __|     |   | |  JSON for Modern C++
-// |  |  |__   |  |  | | | |  version 3.11.2
-// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
-//
-// SPDX-FileCopyrightText: 2013-2022 Niels Lohmann <https://nlohmann.me>
-// SPDX-License-Identifier: MIT
-
-#ifndef INCLUDE_NLOHMANN_JSON_FWD_HPP_
-    #define INCLUDE_NLOHMANN_JSON_FWD_HPP_
-
-    #include <cstdint> // int64_t, uint64_t
-    #include <map> // map
-    #include <memory> // allocator
-    #include <string> // string
-    #include <vector> // vector
-
-    // #include <nlohmann/detail/abi_macros.hpp>
-
-
-    /*!
-    @brief namespace for Niels Lohmann
-    @see https://github.com/nlohmann
-    @since version 1.0.0
-    */
-    NLOHMANN_JSON_NAMESPACE_BEGIN
-
-    /*!
-    @brief default JSONSerializer template argument
-
-    This serializer ignores the template arguments and uses ADL
-    ([argument-dependent lookup](https://en.cppreference.com/w/cpp/language/adl))
-    for serialization.
-    */
-    template<typename T = void, typename SFINAE = void>
-    struct adl_serializer;
-
-    /// a class to store JSON values
-    /// @sa https://json.nlohmann.me/api/basic_json/
-    template<template<typename U, typename V, typename... Args> class ObjectType =
-    std::map,
-    template<typename U, typename... Args> class ArrayType = std::vector,
-    class StringType = std::string, class BooleanType = bool,
-    class NumberIntegerType = std::int64_t,
-    class NumberUnsignedType = std::uint64_t,
-    class NumberFloatType = double,
-    template<typename U> class AllocatorType = std::allocator,
-    template<typename T, typename SFINAE = void> class JSONSerializer =
-    adl_serializer,
-    class BinaryType = std::vector<std::uint8_t>, // cppcheck-suppress syntaxError
-    class CustomBaseClass = void>
-    class basic_json;
-
-    /// @brief JSON Pointer defines a string syntax for identifying a specific value within a JSON document
-    /// @sa https://json.nlohmann.me/api/json_pointer/
-    template<typename RefStringType>
-    class json_pointer;
-
-    /*!
-    @brief default specialization
-    @sa https://json.nlohmann.me/api/json/
-    */
-    using json = basic_json<>;
-
-    /// @brief a minimal map-like container that preserves insertion order
-    /// @sa https://json.nlohmann.me/api/ordered_map/
-    template<class Key, class T, class IgnoredLess, class Allocator>
-    struct ordered_map;
-
-    /// @brief specialization that maintains the insertion order of object keys
-    /// @sa https://json.nlohmann.me/api/ordered_json/
-    using ordered_json = basic_json<nlohmann::ordered_map>;
-
-    NLOHMANN_JSON_NAMESPACE_END
-
-#endif  // INCLUDE_NLOHMANN_JSON_FWD_HPP_
-
-
-NLOHMANN_JSON_NAMESPACE_BEGIN
-/*!
-@brief detail namespace with internal helper functions
-
-This namespace collects functions that should not be exposed,
-implementations of some @ref basic_json methods, and meta-programming helpers.
-
-@since version 2.1.0
-*/
-namespace detail
-{
-
-/////////////
-// helpers //
-/////////////
-
-// Note to maintainers:
-//
-// Every trait in this file expects a non CV-qualified type.
-// The only exceptions are in the 'aliases for detected' section
-// (i.e. those of the form: decltype(T::member_function(std::declval<T>())))
-//
-// In this case, T has to be properly CV-qualified to constraint the function arguments
-// (e.g. to_json(BasicJsonType&, const T&))
-
-template<typename> struct is_basic_json : std::false_type {};
-
-NLOHMANN_BASIC_JSON_TPL_DECLARATION
-struct is_basic_json<NLOHMANN_BASIC_JSON_TPL> : std::true_type {};
-
-// used by exceptions create() member functions
-// true_type for pointer to possibly cv-qualified basic_json or std::nullptr_t
-// false_type otherwise
-template<typename BasicJsonContext>
-struct is_basic_json_context :
-    std::integral_constant < bool,
-    is_basic_json<typename std::remove_cv<typename std::remove_pointer<BasicJsonContext>::type>::type>::value
-    || std::is_same<BasicJsonContext, std::nullptr_t>::value >
-{};
-
-//////////////////////
-// json_ref helpers //
-//////////////////////
-
-template<typename>
-class json_ref;
-
-template<typename>
-struct is_json_ref : std::false_type {};
-
-template<typename T>
-struct is_json_ref<json_ref<T>> : std::true_type {};
-
-//////////////////////////
-// aliases for detected //
-//////////////////////////
-
-template<typename T>
-using mapped_type_t = typename T::mapped_type;
-
-template<typename T>
-using key_type_t = typename T::key_type;
-
-template<typename T>
-using value_type_t = typename T::value_type;
-
-template<typename T>
-using difference_type_t = typename T::difference_type;
-
-template<typename T>
-using pointer_t = typename T::pointer;
-
-template<typename T>
-using reference_t = typename T::reference;
-
-template<typename T>
-using iterator_category_t = typename T::iterator_category;
-
-template<typename T, typename... Args>
-using to_json_function = decltype(T::to_json(std::declval<Args>()...));
-
-template<typename T, typename... Args>
-using from_json_function = decltype(T::from_json(std::declval<Args>()...));
-
-template<typename T, typename U>
-using get_template_function = decltype(std::declval<T>().template get<U>());
-
-// trait checking if JSONSerializer<T>::from_json(json const&, udt&) exists
-template<typename BasicJsonType, typename T, typename = void>
-struct has_from_json : std::false_type {};
-
-// trait checking if j.get<T> is valid
-// use this trait instead of std::is_constructible or std::is_convertible,
-// both rely on, or make use of implicit conversions, and thus fail when T
-// has several constructors/operator= (see https://github.com/nlohmann/json/issues/958)
-template <typename BasicJsonType, typename T>
-struct is_getable
-{
-    static constexpr bool value = is_detected<get_template_function, const BasicJsonType&, T>::value;
-};
-
-template<typename BasicJsonType, typename T>
-struct has_from_json < BasicJsonType, T, enable_if_t < !is_basic_json<T>::value >>
-{
-    using serializer = typename BasicJsonType::template json_serializer<T, void>;
-
-    static constexpr bool value =
-        is_detected_exact<void, from_json_function, serializer,
-        const BasicJsonType&, T&>::value;
-};
-
-// This trait checks if JSONSerializer<T>::from_json(json const&) exists
-// this overload is used for non-default-constructible user-defined-types
-template<typename BasicJsonType, typename T, typename = void>
-struct has_non_default_from_json : std::false_type {};
-
-template<typename BasicJsonType, typename T>
-struct has_non_default_from_json < BasicJsonType, T, enable_if_t < !is_basic_json<T>::value >>
-{
-    using serializer = typename BasicJsonType::template json_serializer<T, void>;
-
-    static constexpr bool value =
-        is_detected_exact<T, from_json_function, serializer,
-        const BasicJsonType&>::value;
-};
-
-// This trait checks if BasicJsonType::json_serializer<T>::to_json exists
-// Do not evaluate the trait when T is a basic_json type, to avoid template instantiation infinite recursion.
-template<typename BasicJsonType, typename T, typename = void>
-struct has_to_json : std::false_type {};
-
-template<typename BasicJsonType, typename T>
-struct has_to_json < BasicJsonType, T, enable_if_t < !is_basic_json<T>::value >>
-{
-    using serializer = typename BasicJsonType::template json_serializer<T, void>;
-
-    static constexpr bool value =
-        is_detected_exact<void, to_json_function, serializer, BasicJsonType&,
-        T>::value;
-};
-
-template<typename T>
-using detect_key_compare = typename T::key_compare;
-
-template<typename T>
-struct has_key_compare : std::integral_constant<bool, is_detected<detect_key_compare, T>::value> {};
-
-// obtains the actual object key comparator
-template<typename BasicJsonType>
-struct actual_object_comparator
-{
-    using object_t = typename BasicJsonType::object_t;
-    using object_comparator_t = typename BasicJsonType::default_object_comparator_t;
-    using type = typename std::conditional < has_key_compare<object_t>::value,
-          typename object_t::key_compare, object_comparator_t>::type;
-};
-
-template<typename BasicJsonType>
-using actual_object_comparator_t = typename actual_object_comparator<BasicJsonType>::type;
-
-///////////////////
-// is_ functions //
-///////////////////
-
-// https://en.cppreference.com/w/cpp/types/conjunction
-template<class...> struct conjunction : std::true_type { };
-template<class B> struct conjunction<B> : B { };
-template<class B, class... Bn>
-struct conjunction<B, Bn...>
-: std::conditional<static_cast<bool>(B::value), conjunction<Bn...>, B>::type {};
-
-// https://en.cppreference.com/w/cpp/types/negation
-template<class B> struct negation : std::integral_constant < bool, !B::value > { };
-
-// Reimplementation of is_constructible and is_default_constructible, due to them being broken for
-// std::pair and std::tuple until LWG 2367 fix (see https://cplusplus.github.io/LWG/lwg-defects.html#2367).
-// This causes compile errors in e.g. clang 3.5 or gcc 4.9.
-template <typename T>
-struct is_default_constructible : std::is_default_constructible<T> {};
-
-template <typename T1, typename T2>
-struct is_default_constructible<std::pair<T1, T2>>
-            : conjunction<is_default_constructible<T1>, is_default_constructible<T2>> {};
-
-template <typename T1, typename T2>
-struct is_default_constructible<const std::pair<T1, T2>>
-            : conjunction<is_default_constructible<T1>, is_default_constructible<T2>> {};
-
-template <typename... Ts>
-struct is_default_constructible<std::tuple<Ts...>>
-            : conjunction<is_default_constructible<Ts>...> {};
-
-template <typename... Ts>
-struct is_default_constructible<const std::tuple<Ts...>>
-            : conjunction<is_default_constructible<Ts>...> {};
-
-
-template <typename T, typename... Args>
-struct is_constructible : std::is_constructible<T, Args...> {};
-
-template <typename T1, typename T2>
-struct is_constructible<std::pair<T1, T2>> : is_default_constructible<std::pair<T1, T2>> {};
-
-template <typename T1, typename T2>
-struct is_constructible<const std::pair<T1, T2>> : is_default_constructible<const std::pair<T1, T2>> {};
-
-template <typename... Ts>
-struct is_constructible<std::tuple<Ts...>> : is_default_constructible<std::tuple<Ts...>> {};
-
-template <typename... Ts>
-struct is_constructible<const std::tuple<Ts...>> : is_default_constructible<const std::tuple<Ts...>> {};
-
-
-template<typename T, typename = void>
-struct is_iterator_traits : std::false_type {};
-
-template<typename T>
-struct is_iterator_traits<iterator_traits<T>>
-{
-  private:
-    using traits = iterator_traits<T>;
-
-  public:
-    static constexpr auto value =
-        is_detected<value_type_t, traits>::value &&
-        is_detected<difference_type_t, traits>::value &&
-        is_detected<pointer_t, traits>::value &&
-        is_detected<iterator_category_t, traits>::value &&
-        is_detected<reference_t, traits>::value;
-};
-
-template<typename T>
-struct is_range
-{
-  private:
-    using t_ref = typename std::add_lvalue_reference<T>::type;
-
-    using iterator = detected_t<result_of_begin, t_ref>;
-    using sentinel = detected_t<result_of_end, t_ref>;
-
-    // to be 100% correct, it should use https://en.cppreference.com/w/cpp/iterator/input_or_output_iterator
-    // and https://en.cppreference.com/w/cpp/iterator/sentinel_for
-    // but reimplementing these would be too much work, as a lot of other concepts are used underneath
-    static constexpr auto is_iterator_begin =
-        is_iterator_traits<iterator_traits<iterator>>::value;
-
-  public:
-    static constexpr bool value = !std::is_same<iterator, nonesuch>::value && !std::is_same<sentinel, nonesuch>::value && is_iterator_begin;
-};
-
-template<typename R>
-using iterator_t = enable_if_t<is_range<R>::value, result_of_begin<decltype(std::declval<R&>())>>;
-
-template<typename T>
-using range_value_t = value_type_t<iterator_traits<iterator_t<T>>>;
-
-// The following implementation of is_complete_type is taken from
-// https://blogs.msdn.microsoft.com/vcblog/2015/12/02/partial-support-for-expression-sfinae-in-vs-2015-update-1/
-// and is written by Xiang Fan who agreed to using it in this library.
-
-template<typename T, typename = void>
-struct is_complete_type : std::false_type {};
-
-template<typename T>
-struct is_complete_type<T, decltype(void(sizeof(T)))> : std::true_type {};
-
-template<typename BasicJsonType, typename CompatibleObjectType,
-         typename = void>
-struct is_compatible_object_type_impl : std::false_type {};
-
-template<typename BasicJsonType, typename CompatibleObjectType>
-struct is_compatible_object_type_impl <
-    BasicJsonType, CompatibleObjectType,
-    enable_if_t < is_detected<mapped_type_t, CompatibleObjectType>::value&&
-    is_detected<key_type_t, CompatibleObjectType>::value >>
-{
-    using object_t = typename BasicJsonType::object_t;
-
-    // macOS's is_constructible does not play well with nonesuch...
-    static constexpr bool value =
-        is_constructible<typename object_t::key_type,
-        typename CompatibleObjectType::key_type>::value &&
-        is_constructible<typename object_t::mapped_type,
-        typename CompatibleObjectType::mapped_type>::value;
-};
-
-template<typename BasicJsonType, typename CompatibleObjectType>
-struct is_compatible_object_type
-    : is_compatible_object_type_impl<BasicJsonType, CompatibleObjectType> {};
-
-template<typename BasicJsonType, typename ConstructibleObjectType,
-         typename = void>
-struct is_constructible_object_type_impl : std::false_type {};
-
-template<typename BasicJsonType, typename ConstructibleObjectType>
-struct is_constructible_object_type_impl <
-    BasicJsonType, ConstructibleObjectType,
-    enable_if_t < is_detected<mapped_type_t, ConstructibleObjectType>::value&&
-    is_detected<key_type_t, ConstructibleObjectType>::value >>
-{
-    using object_t = typename BasicJsonType::object_t;
-
-    static constexpr bool value =
-        (is_default_constructible<ConstructibleObjectType>::value &&
-         (std::is_move_assignable<ConstructibleObjectType>::value ||
-          std::is_copy_assignable<ConstructibleObjectType>::value) &&
-         (is_constructible<typename ConstructibleObjectType::key_type,
-          typename object_t::key_type>::value &&
-          std::is_same <
-          typename object_t::mapped_type,
-          typename ConstructibleObjectType::mapped_type >::value)) ||
-        (has_from_json<BasicJsonType,
-         typename ConstructibleObjectType::mapped_type>::value ||
-         has_non_default_from_json <
-         BasicJsonType,
-         typename ConstructibleObjectType::mapped_type >::value);
-};
-
-template<typename BasicJsonType, typename ConstructibleObjectType>
-struct is_constructible_object_type
-    : is_constructible_object_type_impl<BasicJsonType,
-      ConstructibleObjectType> {};
-
-template<typename BasicJsonType, typename CompatibleStringType>
-struct is_compatible_string_type
-{
-    static constexpr auto value =
-        is_constructible<typename BasicJsonType::string_t, CompatibleStringType>::value;
-};
-
-template<typename BasicJsonType, typename ConstructibleStringType>
-struct is_constructible_string_type
-{
-    // launder type through decltype() to fix compilation failure on ICPC
-#ifdef __INTEL_COMPILER
-    using laundered_type = decltype(std::declval<ConstructibleStringType>());
-#else
-    using laundered_type = ConstructibleStringType;
-#endif
-
-    static constexpr auto value =
-        conjunction <
-        is_constructible<laundered_type, typename BasicJsonType::string_t>,
-        is_detected_exact<typename BasicJsonType::string_t::value_type,
-        value_type_t, laundered_type >>::value;
-};
-
-template<typename BasicJsonType, typename CompatibleArrayType, typename = void>
-struct is_compatible_array_type_impl : std::false_type {};
-
-template<typename BasicJsonType, typename CompatibleArrayType>
-struct is_compatible_array_type_impl <
-    BasicJsonType, CompatibleArrayType,
-    enable_if_t <
-    is_detected<iterator_t, CompatibleArrayType>::value&&
-    is_iterator_traits<iterator_traits<detected_t<iterator_t, CompatibleArrayType>>>::value&&
-// special case for types like std::filesystem::path whose iterator's value_type are themselves
-// c.f. https://github.com/nlohmann/json/pull/3073
-    !std::is_same<CompatibleArrayType, detected_t<range_value_t, CompatibleArrayType>>::value >>
-{
-    static constexpr bool value =
-        is_constructible<BasicJsonType,
-        range_value_t<CompatibleArrayType>>::value;
-};
-
-template<typename BasicJsonType, typename CompatibleArrayType>
-struct is_compatible_array_type
-    : is_compatible_array_type_impl<BasicJsonType, CompatibleArrayType> {};
-
-template<typename BasicJsonType, typename ConstructibleArrayType, typename = void>
-struct is_constructible_array_type_impl : std::false_type {};
-
-template<typename BasicJsonType, typename ConstructibleArrayType>
-struct is_constructible_array_type_impl <
-    BasicJsonType, ConstructibleArrayType,
-    enable_if_t<std::is_same<ConstructibleArrayType,
-    typename BasicJsonType::value_type>::value >>
-            : std::true_type {};
-
-template<typename BasicJsonType, typename ConstructibleArrayType>
-struct is_constructible_array_type_impl <
-    BasicJsonType, ConstructibleArrayType,
-    enable_if_t < !std::is_same<ConstructibleArrayType,
-    typename BasicJsonType::value_type>::value&&
-    !is_compatible_string_type<BasicJsonType, ConstructibleArrayType>::value&&
-    is_default_constructible<ConstructibleArrayType>::value&&
-(std::is_move_assignable<ConstructibleArrayType>::value ||
- std::is_copy_assignable<ConstructibleArrayType>::value)&&
-is_detected<iterator_t, ConstructibleArrayType>::value&&
-is_iterator_traits<iterator_traits<detected_t<iterator_t, ConstructibleArrayType>>>::value&&
-is_detected<range_value_t, ConstructibleArrayType>::value&&
-// special case for types like std::filesystem::path whose iterator's value_type are themselves
-// c.f. https://github.com/nlohmann/json/pull/3073
-!std::is_same<ConstructibleArrayType, detected_t<range_value_t, ConstructibleArrayType>>::value&&
-        is_complete_type <
-        detected_t<range_value_t, ConstructibleArrayType >>::value >>
-{
-    using value_type = range_value_t<ConstructibleArrayType>;
-
-    static constexpr bool value =
-        std::is_same<value_type,
-        typename BasicJsonType::array_t::value_type>::value ||
-        has_from_json<BasicJsonType,
-        value_type>::value ||
-        has_non_default_from_json <
-        BasicJsonType,
-        value_type >::value;
-};
-
-template<typename BasicJsonType, typename ConstructibleArrayType>
-struct is_constructible_array_type
-    : is_constructible_array_type_impl<BasicJsonType, ConstructibleArrayType> {};
-
-template<typename RealIntegerType, typename CompatibleNumberIntegerType,
-         typename = void>
-struct is_compatible_integer_type_impl : std::false_type {};
-
-template<typename RealIntegerType, typename CompatibleNumberIntegerType>
-struct is_compatible_integer_type_impl <
-    RealIntegerType, CompatibleNumberIntegerType,
-    enable_if_t < std::is_integral<RealIntegerType>::value&&
-    std::is_integral<CompatibleNumberIntegerType>::value&&
-    !std::is_same<bool, CompatibleNumberIntegerType>::value >>
-{
-    // is there an assert somewhere on overflows?
-    using RealLimits = std::numeric_limits<RealIntegerType>;
-    using CompatibleLimits = std::numeric_limits<CompatibleNumberIntegerType>;
-
-    static constexpr auto value =
-        is_constructible<RealIntegerType,
-        CompatibleNumberIntegerType>::value &&
-        CompatibleLimits::is_integer &&
-        RealLimits::is_signed == CompatibleLimits::is_signed;
-};
-
-template<typename RealIntegerType, typename CompatibleNumberIntegerType>
-struct is_compatible_integer_type
-    : is_compatible_integer_type_impl<RealIntegerType,
-      CompatibleNumberIntegerType> {};
-
-template<typename BasicJsonType, typename CompatibleType, typename = void>
-struct is_compatible_type_impl: std::false_type {};
-
-template<typename BasicJsonType, typename CompatibleType>
-struct is_compatible_type_impl <
-    BasicJsonType, CompatibleType,
-    enable_if_t<is_complete_type<CompatibleType>::value >>
-{
-    static constexpr bool value =
-        has_to_json<BasicJsonType, CompatibleType>::value;
-};
-
-template<typename BasicJsonType, typename CompatibleType>
-struct is_compatible_type
-    : is_compatible_type_impl<BasicJsonType, CompatibleType> {};
-
-template<typename T1, typename T2>
-struct is_constructible_tuple : std::false_type {};
-
-template<typename T1, typename... Args>
-struct is_constructible_tuple<T1, std::tuple<Args...>> : conjunction<is_constructible<T1, Args>...> {};
-
-template<typename BasicJsonType, typename T>
-struct is_json_iterator_of : std::false_type {};
-
-template<typename BasicJsonType>
-struct is_json_iterator_of<BasicJsonType, typename BasicJsonType::iterator> : std::true_type {};
-
-template<typename BasicJsonType>
-struct is_json_iterator_of<BasicJsonType, typename BasicJsonType::const_iterator> : std::true_type
-{};
-
-// checks if a given type T is a template specialization of Primary
-template<template <typename...> class Primary, typename T>
-struct is_specialization_of : std::false_type {};
-
-template<template <typename...> class Primary, typename... Args>
-struct is_specialization_of<Primary, Primary<Args...>> : std::true_type {};
-
-template<typename T>
-using is_json_pointer = is_specialization_of<::nlohmann::json_pointer, uncvref_t<T>>;
-
-// checks if A and B are comparable using Compare functor
-template<typename Compare, typename A, typename B, typename = void>
-struct is_comparable : std::false_type {};
-
-template<typename Compare, typename A, typename B>
-struct is_comparable<Compare, A, B, void_t<
-decltype(std::declval<Compare>()(std::declval<A>(), std::declval<B>())),
-decltype(std::declval<Compare>()(std::declval<B>(), std::declval<A>()))
->> : std::true_type {};
-
-template<typename T>
-using detect_is_transparent = typename T::is_transparent;
-
-// type trait to check if KeyType can be used as object key (without a BasicJsonType)
-// see is_usable_as_basic_json_key_type below
-template<typename Comparator, typename ObjectKeyType, typename KeyTypeCVRef, bool RequireTransparentComparator = true,
-         bool ExcludeObjectKeyType = RequireTransparentComparator, typename KeyType = uncvref_t<KeyTypeCVRef>>
-using is_usable_as_key_type = typename std::conditional <
-                              is_comparable<Comparator, ObjectKeyType, KeyTypeCVRef>::value
-                              && !(ExcludeObjectKeyType && std::is_same<KeyType,
-                                   ObjectKeyType>::value)
-                              && (!RequireTransparentComparator
-                                  || is_detected <detect_is_transparent, Comparator>::value)
-                              && !is_json_pointer<KeyType>::value,
-                              std::true_type,
-                              std::false_type >::type;
-
-// type trait to check if KeyType can be used as object key
-// true if:
-//   - KeyType is comparable with BasicJsonType::object_t::key_type
-//   - if ExcludeObjectKeyType is true, KeyType is not BasicJsonType::object_t::key_type
-//   - the comparator is transparent or RequireTransparentComparator is false
-//   - KeyType is not a JSON iterator or json_pointer
-template<typename BasicJsonType, typename KeyTypeCVRef, bool RequireTransparentComparator = true,
-         bool ExcludeObjectKeyType = RequireTransparentComparator, typename KeyType = uncvref_t<KeyTypeCVRef>>
-using is_usable_as_basic_json_key_type = typename std::conditional <
-        is_usable_as_key_type<typename BasicJsonType::object_comparator_t,
-        typename BasicJsonType::object_t::key_type, KeyTypeCVRef,
-        RequireTransparentComparator, ExcludeObjectKeyType>::value
-        && !is_json_iterator_of<BasicJsonType, KeyType>::value,
-        std::true_type,
-        std::false_type >::type;
-
-template<typename ObjectType, typename KeyType>
-using detect_erase_with_key_type = decltype(std::declval<ObjectType&>().erase(std::declval<KeyType>()));
-
-// type trait to check if object_t has an erase() member functions accepting KeyType
-template<typename BasicJsonType, typename KeyType>
-using has_erase_with_key_type = typename std::conditional <
-                                is_detected <
-                                detect_erase_with_key_type,
-                                typename BasicJsonType::object_t, KeyType >::value,
-                                std::true_type,
-                                std::false_type >::type;
-
-// a naive helper to check if a type is an ordered_map (exploits the fact that
-// ordered_map inherits capacity() from std::vector)
-template <typename T>
-struct is_ordered_map
-{
-    using one = char;
-
-    struct two
-    {
-        char x[2]; // NOLINT(cppcoreguidelines-avoid-c-arrays,hicpp-avoid-c-arrays,modernize-avoid-c-arrays)
-    };
-
-    template <typename C> static one test( decltype(&C::capacity) ) ;
-    template <typename C> static two test(...);
-
-    enum { value = sizeof(test<T>(nullptr)) == sizeof(char) }; // NOLINT(cppcoreguidelines-pro-type-vararg,hicpp-vararg)
-};
-
-// to avoid useless casts (see https://github.com/nlohmann/json/issues/2893#issuecomment-889152324)
-template < typename T, typename U, enable_if_t < !std::is_same<T, U>::value, int > = 0 >
-T conditional_static_cast(U value)
-{
-    return static_cast<T>(value);
-}
-
-template<typename T, typename U, enable_if_t<std::is_same<T, U>::value, int> = 0>
-T conditional_static_cast(U value)
-{
-    return value;
-}
-
-template<typename... Types>
-using all_integral = conjunction<std::is_integral<Types>...>;
-
-template<typename... Types>
-using all_signed = conjunction<std::is_signed<Types>...>;
-
-template<typename... Types>
-using all_unsigned = conjunction<std::is_unsigned<Types>...>;
-
-// there's a disjunction trait in another PR; replace when merged
-template<typename... Types>
-using same_sign = std::integral_constant < bool,
-      all_signed<Types...>::value || all_unsigned<Types...>::value >;
-
-template<typename OfType, typename T>
-using never_out_of_range = std::integral_constant < bool,
-      (std::is_signed<OfType>::value && (sizeof(T) < sizeof(OfType)))
-      || (same_sign<OfType, T>::value && sizeof(OfType) == sizeof(T)) >;
-
-template<typename OfType, typename T,
-         bool OfTypeSigned = std::is_signed<OfType>::value,
-         bool TSigned = std::is_signed<T>::value>
-struct value_in_range_of_impl2;
-
-template<typename OfType, typename T>
-struct value_in_range_of_impl2<OfType, T, false, false>
-{
-    static constexpr bool test(T val)
-    {
-        using CommonType = typename std::common_type<OfType, T>::type;
-        return static_cast<CommonType>(val) <= static_cast<CommonType>((std::numeric_limits<OfType>::max)());
-    }
-};
-
-template<typename OfType, typename T>
-struct value_in_range_of_impl2<OfType, T, true, false>
-{
-    static constexpr bool test(T val)
-    {
-        using CommonType = typename std::common_type<OfType, T>::type;
-        return static_cast<CommonType>(val) <= static_cast<CommonType>((std::numeric_limits<OfType>::max)());
-    }
-};
-
-template<typename OfType, typename T>
-struct value_in_range_of_impl2<OfType, T, false, true>
-{
-    static constexpr bool test(T val)
-    {
-        using CommonType = typename std::common_type<OfType, T>::type;
-        return val >= 0 && static_cast<CommonType>(val) <= static_cast<CommonType>((std::numeric_limits<OfType>::max)());
-    }
-};
-
-
-template<typename OfType, typename T>
-struct value_in_range_of_impl2<OfType, T, true, true>
-{
-    static constexpr bool test(T val)
-    {
-        using CommonType = typename std::common_type<OfType, T>::type;
-        return static_cast<CommonType>(val) >= static_cast<CommonType>((std::numeric_limits<OfType>::min)())
-               && static_cast<CommonType>(val) <= static_cast<CommonType>((std::numeric_limits<OfType>::max)());
-    }
-};
-
-template<typename OfType, typename T,
-         bool NeverOutOfRange = never_out_of_range<OfType, T>::value,
-         typename = detail::enable_if_t<all_integral<OfType, T>::value>>
-struct value_in_range_of_impl1;
-
-template<typename OfType, typename T>
-struct value_in_range_of_impl1<OfType, T, false>
-{
-    static constexpr bool test(T val)
-    {
-        return value_in_range_of_impl2<OfType, T>::test(val);
-    }
-};
-
-template<typename OfType, typename T>
-struct value_in_range_of_impl1<OfType, T, true>
-{
-    static constexpr bool test(T /*val*/)
-    {
-        return true;
-    }
-};
-
-template<typename OfType, typename T>
-inline constexpr bool value_in_range_of(T val)
-{
-    return value_in_range_of_impl1<OfType, T>::test(val);
-}
-
-template<bool Value>
-using bool_constant = std::integral_constant<bool, Value>;
-
-///////////////////////////////////////////////////////////////////////////////
-// is_c_string
-///////////////////////////////////////////////////////////////////////////////
-
-namespace impl
-{
-
-template<typename T>
-inline constexpr bool is_c_string()
-{
-    using TUnExt = typename std::remove_extent<T>::type;
-    using TUnCVExt = typename std::remove_cv<TUnExt>::type;
-    using TUnPtr = typename std::remove_pointer<T>::type;
-    using TUnCVPtr = typename std::remove_cv<TUnPtr>::type;
-    return
-        (std::is_array<T>::value && std::is_same<TUnCVExt, char>::value)
-        || (std::is_pointer<T>::value && std::is_same<TUnCVPtr, char>::value);
-}
-
-}  // namespace impl
-
-// checks whether T is a [cv] char */[cv] char[] C string
-template<typename T>
-struct is_c_string : bool_constant<impl::is_c_string<T>()> {};
-
-template<typename T>
-using is_c_string_uncvref = is_c_string<uncvref_t<T>>;
-
-///////////////////////////////////////////////////////////////////////////////
-// is_transparent
-///////////////////////////////////////////////////////////////////////////////
-
-namespace impl
-{
-
-template<typename T>
-inline constexpr bool is_transparent()
-{
-    return is_detected<detect_is_transparent, T>::value;
-}
-
-}  // namespace impl
-
-// checks whether T has a member named is_transparent
-template<typename T>
-struct is_transparent : bool_constant<impl::is_transparent<T>()> {};
-
-///////////////////////////////////////////////////////////////////////////////
-
-}  // namespace detail
-NLOHMANN_JSON_NAMESPACE_END
-
-// #include <nlohmann/detail/string_concat.hpp>
-//     __ _____ _____ _____
-//  __|  |   __|     |   | |  JSON for Modern C++
-// |  |  |__   |  |  | | | |  version 3.11.2
-// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
-//
-// SPDX-FileCopyrightText: 2013-2022 Niels Lohmann <https://nlohmann.me>
-// SPDX-License-Identifier: MIT
-
-
-
-#include <cstring> // strlen
-#include <string> // string
-#include <utility> // forward
-
-// #include <nlohmann/detail/meta/cpp_future.hpp>
-
-// #include <nlohmann/detail/meta/detected.hpp>
-
-
-NLOHMANN_JSON_NAMESPACE_BEGIN
-namespace detail
-{
-
-inline std::size_t concat_length()
-{
-    return 0;
-}
-
-template<typename... Args>
-inline std::size_t concat_length(const char* cstr, const Args& ... rest);
-
-template<typename StringType, typename... Args>
-inline std::size_t concat_length(const StringType& str, const Args& ... rest);
-
-template<typename... Args>
-inline std::size_t concat_length(const char /*c*/, const Args& ... rest)
-{
-    return 1 + concat_length(rest...);
-}
-
-template<typename... Args>
-inline std::size_t concat_length(const char* cstr, const Args& ... rest)
-{
-    // cppcheck-suppress ignoredReturnValue
-    return ::strlen(cstr) + concat_length(rest...);
-}
-
-template<typename StringType, typename... Args>
-inline std::size_t concat_length(const StringType& str, const Args& ... rest)
-{
-    return str.size() + concat_length(rest...);
-}
-
-template<typename OutStringType>
-inline void concat_into(OutStringType& /*out*/)
-{}
-
-template<typename StringType, typename Arg>
-using string_can_append = decltype(std::declval<StringType&>().append(std::declval < Arg && > ()));
-
-template<typename StringType, typename Arg>
-using detect_string_can_append = is_detected<string_can_append, StringType, Arg>;
-
-template<typename StringType, typename Arg>
-using string_can_append_op = decltype(std::declval<StringType&>() += std::declval < Arg && > ());
-
-template<typename StringType, typename Arg>
-using detect_string_can_append_op = is_detected<string_can_append_op, StringType, Arg>;
-
-template<typename StringType, typename Arg>
-using string_can_append_iter = decltype(std::declval<StringType&>().append(std::declval<const Arg&>().begin(), std::declval<const Arg&>().end()));
-
-template<typename StringType, typename Arg>
-using detect_string_can_append_iter = is_detected<string_can_append_iter, StringType, Arg>;
-
-template<typename StringType, typename Arg>
-using string_can_append_data = decltype(std::declval<StringType&>().append(std::declval<const Arg&>().data(), std::declval<const Arg&>().size()));
-
-template<typename StringType, typename Arg>
-using detect_string_can_append_data = is_detected<string_can_append_data, StringType, Arg>;
-
-template < typename OutStringType, typename Arg, typename... Args,
-           enable_if_t < !detect_string_can_append<OutStringType, Arg>::value
-                         && detect_string_can_append_op<OutStringType, Arg>::value, int > = 0 >
-inline void concat_into(OutStringType& out, Arg && arg, Args && ... rest);
-
-template < typename OutStringType, typename Arg, typename... Args,
-           enable_if_t < !detect_string_can_append<OutStringType, Arg>::value
-                         && !detect_string_can_append_op<OutStringType, Arg>::value
-                         && detect_string_can_append_iter<OutStringType, Arg>::value, int > = 0 >
-inline void concat_into(OutStringType& out, const Arg& arg, Args && ... rest);
-
-template < typename OutStringType, typename Arg, typename... Args,
-           enable_if_t < !detect_string_can_append<OutStringType, Arg>::value
-                         && !detect_string_can_append_op<OutStringType, Arg>::value
-                         && !detect_string_can_append_iter<OutStringType, Arg>::value
-                         && detect_string_can_append_data<OutStringType, Arg>::value, int > = 0 >
-inline void concat_into(OutStringType& out, const Arg& arg, Args && ... rest);
-
-template<typename OutStringType, typename Arg, typename... Args,
-         enable_if_t<detect_string_can_append<OutStringType, Arg>::value, int> = 0>
-inline void concat_into(OutStringType& out, Arg && arg, Args && ... rest)
-{
-    out.append(std::forward<Arg>(arg));
-    concat_into(out, std::forward<Args>(rest)...);
-}
-
-template < typename OutStringType, typename Arg, typename... Args,
-           enable_if_t < !detect_string_can_append<OutStringType, Arg>::value
-                         && detect_string_can_append_op<OutStringType, Arg>::value, int > >
-inline void concat_into(OutStringType& out, Arg&& arg, Args&& ... rest)
-{
-    out += std::forward<Arg>(arg);
-    concat_into(out, std::forward<Args>(rest)...);
-}
-
-template < typename OutStringType, typename Arg, typename... Args,
-           enable_if_t < !detect_string_can_append<OutStringType, Arg>::value
-                         && !detect_string_can_append_op<OutStringType, Arg>::value
-                         && detect_string_can_append_iter<OutStringType, Arg>::value, int > >
-inline void concat_into(OutStringType& out, const Arg& arg, Args&& ... rest)
-{
-    out.append(arg.begin(), arg.end());
-    concat_into(out, std::forward<Args>(rest)...);
-}
-
-template < typename OutStringType, typename Arg, typename... Args,
-           enable_if_t < !detect_string_can_append<OutStringType, Arg>::value
-                         && !detect_string_can_append_op<OutStringType, Arg>::value
-                         && !detect_string_can_append_iter<OutStringType, Arg>::value
-                         && detect_string_can_append_data<OutStringType, Arg>::value, int > >
-inline void concat_into(OutStringType& out, const Arg& arg, Args&& ... rest)
-{
-    out.append(arg.data(), arg.size());
-    concat_into(out, std::forward<Args>(rest)...);
-}
-
-template<typename OutStringType = std::string, typename... Args>
-inline OutStringType concat(Args && ... args)
-{
-    OutStringType str;
-    str.reserve(concat_length(args...));
-    concat_into(str, std::forward<Args>(args)...);
-    return str;
-}
-
-}  // namespace detail
-NLOHMANN_JSON_NAMESPACE_END
-
-
-
-NLOHMANN_JSON_NAMESPACE_BEGIN
-namespace detail
-{
-
-////////////////
-// exceptions //
-////////////////
-
-/// @brief general exception of the @ref basic_json class
-/// @sa https://json.nlohmann.me/api/basic_json/exception/
-class exception : public std::exception
-{
-  public:
-    /// returns the explanatory string
-    const char* what() const noexcept override
-    {
-        return m.what();
-    }
-
-    /// the id of the exception
-    const int id; // NOLINT(cppcoreguidelines-non-private-member-variables-in-classes)
-
-  protected:
-    JSON_HEDLEY_NON_NULL(3)
-    exception(int id_, const char* what_arg) : id(id_), m(what_arg) {} // NOLINT(bugprone-throw-keyword-missing)
-
-    static std::string name(const std::string& ename, int id_)
-    {
-        return concat("[json.exception.", ename, '.', std::to_string(id_), "] ");
-    }
-
-    static std::string diagnostics(std::nullptr_t /*leaf_element*/)
-    {
-        return "";
-    }
-
-    template<typename BasicJsonType>
-    static std::string diagnostics(const BasicJsonType* leaf_element)
-    {
-#if JSON_DIAGNOSTICS
-        std::vector<std::string> tokens;
-        for (const auto* current = leaf_element; current != nullptr && current->m_parent != nullptr; current = current->m_parent)
-        {
-            switch (current->m_parent->type())
-            {
-                case value_t::array:
-                {
-                    for (std::size_t i = 0; i < current->m_parent->m_data.m_value.array->size(); ++i)
-                    {
-                        if (&current->m_parent->m_data.m_value.array->operator[](i) == current)
-                        {
-                            tokens.emplace_back(std::to_string(i));
-                            break;
-                        }
-                    }
-                    break;
-                }
-
-                case value_t::object:
-                {
-                    for (const auto& element : *current->m_parent->m_data.m_value.object)
-                    {
-                        if (&element.second == current)
-                        {
-                            tokens.emplace_back(element.first.c_str());
-                            break;
-                        }
-                    }
-                    break;
-                }
-
-                case value_t::null: // LCOV_EXCL_LINE
-                case value_t::string: // LCOV_EXCL_LINE
-                case value_t::boolean: // LCOV_EXCL_LINE
-                case value_t::number_integer: // LCOV_EXCL_LINE
-                case value_t::number_unsigned: // LCOV_EXCL_LINE
-                case value_t::number_float: // LCOV_EXCL_LINE
-                case value_t::binary: // LCOV_EXCL_LINE
-                case value_t::discarded: // LCOV_EXCL_LINE
-                default:   // LCOV_EXCL_LINE
-                    break; // LCOV_EXCL_LINE
-            }
-        }
-
-        if (tokens.empty())
-        {
-            return "";
-        }
-
-        auto str = std::accumulate(tokens.rbegin(), tokens.rend(), std::string{},
-                                   [](const std::string & a, const std::string & b)
-        {
-            return concat(a, '/', detail::escape(b));
-        });
-        return concat('(', str, ") ");
-#else
-        static_cast<void>(leaf_element);
-        return "";
-#endif
-    }
-
-  private:
-    /// an exception object as storage for error messages
-    std::runtime_error m;
-};
-
-/// @brief exception indicating a parse error
-/// @sa https://json.nlohmann.me/api/basic_json/parse_error/
-class parse_error : public exception
-{
-  public:
-    /*!
-    @brief create a parse error exception
-    @param[in] id_       the id of the exception
-    @param[in] pos       the position where the error occurred (or with
-                         chars_read_total=0 if the position cannot be
-                         determined)
-    @param[in] what_arg  the explanatory string
-    @return parse_error object
-    */
-    template<typename BasicJsonContext, enable_if_t<is_basic_json_context<BasicJsonContext>::value, int> = 0>
-    static parse_error create(int id_, const position_t& pos, const std::string& what_arg, BasicJsonContext context)
-    {
-        const std::string w = concat(exception::name("parse_error", id_), "parse error",
-                                     position_string(pos), ": ", exception::diagnostics(context), what_arg);
-        return {id_, pos.chars_read_total, w.c_str()};
-    }
-
-    template<typename BasicJsonContext, enable_if_t<is_basic_json_context<BasicJsonContext>::value, int> = 0>
-    static parse_error create(int id_, std::size_t byte_, const std::string& what_arg, BasicJsonContext context)
-    {
-        const std::string w = concat(exception::name("parse_error", id_), "parse error",
-                                     (byte_ != 0 ? (concat(" at byte ", std::to_string(byte_))) : ""),
-                                     ": ", exception::diagnostics(context), what_arg);
-        return {id_, byte_, w.c_str()};
-    }
-
-    /*!
-    @brief byte index of the parse error
-
-    The byte index of the last read character in the input file.
-
-    @note For an input with n bytes, 1 is the index of the first character and
-          n+1 is the index of the terminating null byte or the end of file.
-          This also holds true when reading a byte vector (CBOR or MessagePack).
-    */
-    const std::size_t byte;
-
-  private:
-    parse_error(int id_, std::size_t byte_, const char* what_arg)
-        : exception(id_, what_arg), byte(byte_) {}
-
-    static std::string position_string(const position_t& pos)
-    {
-        return concat(" at line ", std::to_string(pos.lines_read + 1),
-                      ", column ", std::to_string(pos.chars_read_current_line));
-    }
-};
-
-/// @brief exception indicating errors with iterators
-/// @sa https://json.nlohmann.me/api/basic_json/invalid_iterator/
-class invalid_iterator : public exception
-{
-  public:
-    template<typename BasicJsonContext, enable_if_t<is_basic_json_context<BasicJsonContext>::value, int> = 0>
-    static invalid_iterator create(int id_, const std::string& what_arg, BasicJsonContext context)
-    {
-        const std::string w = concat(exception::name("invalid_iterator", id_), exception::diagnostics(context), what_arg);
-        return {id_, w.c_str()};
-    }
-
-  private:
-    JSON_HEDLEY_NON_NULL(3)
-    invalid_iterator(int id_, const char* what_arg)
-        : exception(id_, what_arg) {}
-};
-
-/// @brief exception indicating executing a member function with a wrong type
-/// @sa https://json.nlohmann.me/api/basic_json/type_error/
-class type_error : public exception
-{
-  public:
-    template<typename BasicJsonContext, enable_if_t<is_basic_json_context<BasicJsonContext>::value, int> = 0>
-    static type_error create(int id_, const std::string& what_arg, BasicJsonContext context)
-    {
-        const std::string w = concat(exception::name("type_error", id_), exception::diagnostics(context), what_arg);
-        return {id_, w.c_str()};
-    }
-
-  private:
-    JSON_HEDLEY_NON_NULL(3)
-    type_error(int id_, const char* what_arg) : exception(id_, what_arg) {}
-};
-
-/// @brief exception indicating access out of the defined range
-/// @sa https://json.nlohmann.me/api/basic_json/out_of_range/
-class out_of_range : public exception
-{
-  public:
-    template<typename BasicJsonContext, enable_if_t<is_basic_json_context<BasicJsonContext>::value, int> = 0>
-    static out_of_range create(int id_, const std::string& what_arg, BasicJsonContext context)
-    {
-        const std::string w = concat(exception::name("out_of_range", id_), exception::diagnostics(context), what_arg);
-        return {id_, w.c_str()};
-    }
-
-  private:
-    JSON_HEDLEY_NON_NULL(3)
-    out_of_range(int id_, const char* what_arg) : exception(id_, what_arg) {}
-};
-
-/// @brief exception indicating other library errors
-/// @sa https://json.nlohmann.me/api/basic_json/other_error/
-class other_error : public exception
-{
-  public:
-    template<typename BasicJsonContext, enable_if_t<is_basic_json_context<BasicJsonContext>::value, int> = 0>
-    static other_error create(int id_, const std::string& what_arg, BasicJsonContext context)
-    {
-        const std::string w = concat(exception::name("other_error", id_), exception::diagnostics(context), what_arg);
-        return {id_, w.c_str()};
-    }
-
-  private:
-    JSON_HEDLEY_NON_NULL(3)
-    other_error(int id_, const char* what_arg) : exception(id_, what_arg) {}
-};
-
-}  // namespace detail
-NLOHMANN_JSON_NAMESPACE_END
-
-// #include <nlohmann/detail/macro_scope.hpp>
-
-// #include <nlohmann/detail/meta/cpp_future.hpp>
-
-// #include <nlohmann/detail/meta/identity_tag.hpp>
-//     __ _____ _____ _____
-//  __|  |   __|     |   | |  JSON for Modern C++
-// |  |  |__   |  |  | | | |  version 3.11.2
-// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
-//
-// SPDX-FileCopyrightText: 2013-2022 Niels Lohmann <https://nlohmann.me>
-// SPDX-License-Identifier: MIT
-
-
-
-// #include <nlohmann/detail/abi_macros.hpp>
-
-
-NLOHMANN_JSON_NAMESPACE_BEGIN
-namespace detail
-{
-
-// dispatching helper struct
-template <class T> struct identity_tag {};
-
-}  // namespace detail
-NLOHMANN_JSON_NAMESPACE_END
-
-// #include <nlohmann/detail/meta/std_fs.hpp>
-//     __ _____ _____ _____
-//  __|  |   __|     |   | |  JSON for Modern C++
-// |  |  |__   |  |  | | | |  version 3.11.2
-// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
-//
-// SPDX-FileCopyrightText: 2013-2022 Niels Lohmann <https://nlohmann.me>
-// SPDX-License-Identifier: MIT
-
-
-
-// #include <nlohmann/detail/macro_scope.hpp>
-
-
-#if JSON_HAS_EXPERIMENTAL_FILESYSTEM
-#include <experimental/filesystem>
-NLOHMANN_JSON_NAMESPACE_BEGIN
-namespace detail
-{
-namespace std_fs = std::experimental::filesystem;
-}  // namespace detail
-NLOHMANN_JSON_NAMESPACE_END
-#elif JSON_HAS_FILESYSTEM
-#include <filesystem>
-NLOHMANN_JSON_NAMESPACE_BEGIN
-namespace detail
-{
-namespace std_fs = std::filesystem;
-}  // namespace detail
-NLOHMANN_JSON_NAMESPACE_END
-#endif
-
-// #include <nlohmann/detail/meta/type_traits.hpp>
-
-// #include <nlohmann/detail/string_concat.hpp>
-
-// #include <nlohmann/detail/value_t.hpp>
-
-
-NLOHMANN_JSON_NAMESPACE_BEGIN
-namespace detail
-{
-
-template<typename BasicJsonType>
-inline void from_json(const BasicJsonType& j, typename std::nullptr_t& n)
-{
-    if (JSON_HEDLEY_UNLIKELY(!j.is_null()))
-    {
-        JSON_THROW(type_error::create(302, concat("type must be null, but is ", j.type_name()), &j));
-    }
-    n = nullptr;
-}
-
-// overloads for basic_json template parameters
-template < typename BasicJsonType, typename ArithmeticType,
-           enable_if_t < std::is_arithmetic<ArithmeticType>::value&&
-                         !std::is_same<ArithmeticType, typename BasicJsonType::boolean_t>::value,
-                         int > = 0 >
-void get_arithmetic_value(const BasicJsonType& j, ArithmeticType& val)
-{
-    switch (static_cast<value_t>(j))
-    {
-        case value_t::number_unsigned:
-        {
-            val = static_cast<ArithmeticType>(*j.template get_ptr<const typename BasicJsonType::number_unsigned_t*>());
-            break;
-        }
-        case value_t::number_integer:
-        {
-            val = static_cast<ArithmeticType>(*j.template get_ptr<const typename BasicJsonType::number_integer_t*>());
-            break;
-        }
-        case value_t::number_float:
-        {
-            val = static_cast<ArithmeticType>(*j.template get_ptr<const typename BasicJsonType::number_float_t*>());
-            break;
-        }
-
-        case value_t::null:
-        case value_t::object:
-        case value_t::array:
-        case value_t::string:
-        case value_t::boolean:
-        case value_t::binary:
-        case value_t::discarded:
-        default:
-            JSON_THROW(type_error::create(302, concat("type must be number, but is ", j.type_name()), &j));
-    }
-}
-
-template<typename BasicJsonType>
-inline void from_json(const BasicJsonType& j, typename BasicJsonType::boolean_t& b)
-{
-    if (JSON_HEDLEY_UNLIKELY(!j.is_boolean()))
-    {
-        JSON_THROW(type_error::create(302, concat("type must be boolean, but is ", j.type_name()), &j));
-    }
-    b = *j.template get_ptr<const typename BasicJsonType::boolean_t*>();
-}
-
-template<typename BasicJsonType>
-inline void from_json(const BasicJsonType& j, typename BasicJsonType::string_t& s)
-{
-    if (JSON_HEDLEY_UNLIKELY(!j.is_string()))
-    {
-        JSON_THROW(type_error::create(302, concat("type must be string, but is ", j.type_name()), &j));
-    }
-    s = *j.template get_ptr<const typename BasicJsonType::string_t*>();
-}
-
-template <
-    typename BasicJsonType, typename StringType,
-    enable_if_t <
-        std::is_assignable<StringType&, const typename BasicJsonType::string_t>::value
-        && is_detected_exact<typename BasicJsonType::string_t::value_type, value_type_t, StringType>::value
-        && !std::is_same<typename BasicJsonType::string_t, StringType>::value
-        && !is_json_ref<StringType>::value, int > = 0 >
-inline void from_json(const BasicJsonType& j, StringType& s)
-{
-    if (JSON_HEDLEY_UNLIKELY(!j.is_string()))
-    {
-        JSON_THROW(type_error::create(302, concat("type must be string, but is ", j.type_name()), &j));
-    }
-
-    s = *j.template get_ptr<const typename BasicJsonType::string_t*>();
-}
-
-template<typename BasicJsonType>
-inline void from_json(const BasicJsonType& j, typename BasicJsonType::number_float_t& val)
-{
-    get_arithmetic_value(j, val);
-}
-
-template<typename BasicJsonType>
-inline void from_json(const BasicJsonType& j, typename BasicJsonType::number_unsigned_t& val)
-{
-    get_arithmetic_value(j, val);
-}
-
-template<typename BasicJsonType>
-inline void from_json(const BasicJsonType& j, typename BasicJsonType::number_integer_t& val)
-{
-    get_arithmetic_value(j, val);
-}
-
-#if !JSON_DISABLE_ENUM_SERIALIZATION
-template<typename BasicJsonType, typename EnumType,
-         enable_if_t<std::is_enum<EnumType>::value, int> = 0>
-inline void from_json(const BasicJsonType& j, EnumType& e)
-{
-    typename std::underlying_type<EnumType>::type val;
-    get_arithmetic_value(j, val);
-    e = static_cast<EnumType>(val);
-}
-#endif  // JSON_DISABLE_ENUM_SERIALIZATION
-
-// forward_list doesn't have an insert method
-template<typename BasicJsonType, typename T, typename Allocator,
-         enable_if_t<is_getable<BasicJsonType, T>::value, int> = 0>
-inline void from_json(const BasicJsonType& j, std::forward_list<T, Allocator>& l)
-{
-    if (JSON_HEDLEY_UNLIKELY(!j.is_array()))
-    {
-        JSON_THROW(type_error::create(302, concat("type must be array, but is ", j.type_name()), &j));
-    }
-    l.clear();
-    std::transform(j.rbegin(), j.rend(),
-                   std::front_inserter(l), [](const BasicJsonType & i)
-    {
-        return i.template get<T>();
-    });
-}
-
-// valarray doesn't have an insert method
-template<typename BasicJsonType, typename T,
-         enable_if_t<is_getable<BasicJsonType, T>::value, int> = 0>
-inline void from_json(const BasicJsonType& j, std::valarray<T>& l)
-{
-    if (JSON_HEDLEY_UNLIKELY(!j.is_array()))
-    {
-        JSON_THROW(type_error::create(302, concat("type must be array, but is ", j.type_name()), &j));
-    }
-    l.resize(j.size());
-    std::transform(j.begin(), j.end(), std::begin(l),
-                   [](const BasicJsonType & elem)
-    {
-        return elem.template get<T>();
-    });
-}
-
-template<typename BasicJsonType, typename T, std::size_t N>
-auto from_json(const BasicJsonType& j, T (&arr)[N])  // NOLINT(cppcoreguidelines-avoid-c-arrays,hicpp-avoid-c-arrays,modernize-avoid-c-arrays)
--> decltype(j.template get<T>(), void())
-{
-    for (std::size_t i = 0; i < N; ++i)
-    {
-        arr[i] = j.at(i).template get<T>();
-    }
-}
-
-template<typename BasicJsonType>
-inline void from_json_array_impl(const BasicJsonType& j, typename BasicJsonType::array_t& arr, priority_tag<3> /*unused*/)
-{
-    arr = *j.template get_ptr<const typename BasicJsonType::array_t*>();
-}
-
-template<typename BasicJsonType, typename T, std::size_t N>
-auto from_json_array_impl(const BasicJsonType& j, std::array<T, N>& arr,
-                          priority_tag<2> /*unused*/)
--> decltype(j.template get<T>(), void())
-{
-    for (std::size_t i = 0; i < N; ++i)
-    {
-        arr[i] = j.at(i).template get<T>();
-    }
-}
-
-template<typename BasicJsonType, typename ConstructibleArrayType,
-         enable_if_t<
-             std::is_assignable<ConstructibleArrayType&, ConstructibleArrayType>::value,
-             int> = 0>
-auto from_json_array_impl(const BasicJsonType& j, ConstructibleArrayType& arr, priority_tag<1> /*unused*/)
--> decltype(
-    arr.reserve(std::declval<typename ConstructibleArrayType::size_type>()),
-    j.template get<typename ConstructibleArrayType::value_type>(),
-    void())
-{
-    using std::end;
-
-    ConstructibleArrayType ret;
-    ret.reserve(j.size());
-    std::transform(j.begin(), j.end(),
-                   std::inserter(ret, end(ret)), [](const BasicJsonType & i)
-    {
-        // get<BasicJsonType>() returns *this, this won't call a from_json
-        // method when value_type is BasicJsonType
-        return i.template get<typename ConstructibleArrayType::value_type>();
-    });
-    arr = std::move(ret);
-}
-
-template<typename BasicJsonType, typename ConstructibleArrayType,
-         enable_if_t<
-             std::is_assignable<ConstructibleArrayType&, ConstructibleArrayType>::value,
-             int> = 0>
-inline void from_json_array_impl(const BasicJsonType& j, ConstructibleArrayType& arr,
-                                 priority_tag<0> /*unused*/)
-{
-    using std::end;
-
-    ConstructibleArrayType ret;
-    std::transform(
-        j.begin(), j.end(), std::inserter(ret, end(ret)),
-        [](const BasicJsonType & i)
-    {
-        // get<BasicJsonType>() returns *this, this won't call a from_json
-        // method when value_type is BasicJsonType
-        return i.template get<typename ConstructibleArrayType::value_type>();
-    });
-    arr = std::move(ret);
-}
-
-template < typename BasicJsonType, typename ConstructibleArrayType,
-           enable_if_t <
-               is_constructible_array_type<BasicJsonType, ConstructibleArrayType>::value&&
-               !is_constructible_object_type<BasicJsonType, ConstructibleArrayType>::value&&
-               !is_constructible_string_type<BasicJsonType, ConstructibleArrayType>::value&&
-               !std::is_same<ConstructibleArrayType, typename BasicJsonType::binary_t>::value&&
-               !is_basic_json<ConstructibleArrayType>::value,
-               int > = 0 >
-auto from_json(const BasicJsonType& j, ConstructibleArrayType& arr)
--> decltype(from_json_array_impl(j, arr, priority_tag<3> {}),
-j.template get<typename ConstructibleArrayType::value_type>(),
-void())
-{
-    if (JSON_HEDLEY_UNLIKELY(!j.is_array()))
-    {
-        JSON_THROW(type_error::create(302, concat("type must be array, but is ", j.type_name()), &j));
-    }
-
-    from_json_array_impl(j, arr, priority_tag<3> {});
-}
-
-template < typename BasicJsonType, typename T, std::size_t... Idx >
-std::array<T, sizeof...(Idx)> from_json_inplace_array_impl(BasicJsonType&& j,
-        identity_tag<std::array<T, sizeof...(Idx)>> /*unused*/, index_sequence<Idx...> /*unused*/)
-{
-    return { { std::forward<BasicJsonType>(j).at(Idx).template get<T>()... } };
-}
-
-template < typename BasicJsonType, typename T, std::size_t N >
-auto from_json(BasicJsonType&& j, identity_tag<std::array<T, N>> tag)
--> decltype(from_json_inplace_array_impl(std::forward<BasicJsonType>(j), tag, make_index_sequence<N> {}))
-{
-    if (JSON_HEDLEY_UNLIKELY(!j.is_array()))
-    {
-        JSON_THROW(type_error::create(302, concat("type must be array, but is ", j.type_name()), &j));
-    }
-
-    return from_json_inplace_array_impl(std::forward<BasicJsonType>(j), tag, make_index_sequence<N> {});
-}
-
-template<typename BasicJsonType>
-inline void from_json(const BasicJsonType& j, typename BasicJsonType::binary_t& bin)
-{
-    if (JSON_HEDLEY_UNLIKELY(!j.is_binary()))
-    {
-        JSON_THROW(type_error::create(302, concat("type must be binary, but is ", j.type_name()), &j));
-    }
-
-    bin = *j.template get_ptr<const typename BasicJsonType::binary_t*>();
-}
-
-template<typename BasicJsonType, typename ConstructibleObjectType,
-         enable_if_t<is_constructible_object_type<BasicJsonType, ConstructibleObjectType>::value, int> = 0>
-inline void from_json(const BasicJsonType& j, ConstructibleObjectType& obj)
-{
-    if (JSON_HEDLEY_UNLIKELY(!j.is_object()))
-    {
-        JSON_THROW(type_error::create(302, concat("type must be object, but is ", j.type_name()), &j));
-    }
-
-    ConstructibleObjectType ret;
-    const auto* inner_object = j.template get_ptr<const typename BasicJsonType::object_t*>();
-    using value_type = typename ConstructibleObjectType::value_type;
-    std::transform(
-        inner_object->begin(), inner_object->end(),
-        std::inserter(ret, ret.begin()),
-        [](typename BasicJsonType::object_t::value_type const & p)
-    {
-        return value_type(p.first, p.second.template get<typename ConstructibleObjectType::mapped_type>());
-    });
-    obj = std::move(ret);
-}
-
-// overload for arithmetic types, not chosen for basic_json template arguments
-// (BooleanType, etc..); note: Is it really necessary to provide explicit
-// overloads for boolean_t etc. in case of a custom BooleanType which is not
-// an arithmetic type?
-template < typename BasicJsonType, typename ArithmeticType,
-           enable_if_t <
-               std::is_arithmetic<ArithmeticType>::value&&
-               !std::is_same<ArithmeticType, typename BasicJsonType::number_unsigned_t>::value&&
-               !std::is_same<ArithmeticType, typename BasicJsonType::number_integer_t>::value&&
-               !std::is_same<ArithmeticType, typename BasicJsonType::number_float_t>::value&&
-               !std::is_same<ArithmeticType, typename BasicJsonType::boolean_t>::value,
-               int > = 0 >
-inline void from_json(const BasicJsonType& j, ArithmeticType& val)
-{
-    switch (static_cast<value_t>(j))
-    {
-        case value_t::number_unsigned:
-        {
-            val = static_cast<ArithmeticType>(*j.template get_ptr<const typename BasicJsonType::number_unsigned_t*>());
-            break;
-        }
-        case value_t::number_integer:
-        {
-            val = static_cast<ArithmeticType>(*j.template get_ptr<const typename BasicJsonType::number_integer_t*>());
-            break;
-        }
-        case value_t::number_float:
-        {
-            val = static_cast<ArithmeticType>(*j.template get_ptr<const typename BasicJsonType::number_float_t*>());
-            break;
-        }
-        case value_t::boolean:
-        {
-            val = static_cast<ArithmeticType>(*j.template get_ptr<const typename BasicJsonType::boolean_t*>());
-            break;
-        }
-
-        case value_t::null:
-        case value_t::object:
-        case value_t::array:
-        case value_t::string:
-        case value_t::binary:
-        case value_t::discarded:
-        default:
-            JSON_THROW(type_error::create(302, concat("type must be number, but is ", j.type_name()), &j));
-    }
-}
-
-template<typename BasicJsonType, typename... Args, std::size_t... Idx>
-std::tuple<Args...> from_json_tuple_impl_base(BasicJsonType&& j, index_sequence<Idx...> /*unused*/)
-{
-    return std::make_tuple(std::forward<BasicJsonType>(j).at(Idx).template get<Args>()...);
-}
-
-template < typename BasicJsonType, class A1, class A2 >
-std::pair<A1, A2> from_json_tuple_impl(BasicJsonType&& j, identity_tag<std::pair<A1, A2>> /*unused*/, priority_tag<0> /*unused*/)
-{
-    return {std::forward<BasicJsonType>(j).at(0).template get<A1>(),
-            std::forward<BasicJsonType>(j).at(1).template get<A2>()};
-}
-
-template<typename BasicJsonType, typename A1, typename A2>
-inline void from_json_tuple_impl(BasicJsonType&& j, std::pair<A1, A2>& p, priority_tag<1> /*unused*/)
-{
-    p = from_json_tuple_impl(std::forward<BasicJsonType>(j), identity_tag<std::pair<A1, A2>> {}, priority_tag<0> {});
-}
-
-template<typename BasicJsonType, typename... Args>
-std::tuple<Args...> from_json_tuple_impl(BasicJsonType&& j, identity_tag<std::tuple<Args...>> /*unused*/, priority_tag<2> /*unused*/)
-{
-    return from_json_tuple_impl_base<BasicJsonType, Args...>(std::forward<BasicJsonType>(j), index_sequence_for<Args...> {});
-}
-
-template<typename BasicJsonType, typename... Args>
-inline void from_json_tuple_impl(BasicJsonType&& j, std::tuple<Args...>& t, priority_tag<3> /*unused*/)
-{
-    t = from_json_tuple_impl_base<BasicJsonType, Args...>(std::forward<BasicJsonType>(j), index_sequence_for<Args...> {});
-}
-
-template<typename BasicJsonType, typename TupleRelated>
-auto from_json(BasicJsonType&& j, TupleRelated&& t)
--> decltype(from_json_tuple_impl(std::forward<BasicJsonType>(j), std::forward<TupleRelated>(t), priority_tag<3> {}))
-{
-    if (JSON_HEDLEY_UNLIKELY(!j.is_array()))
-    {
-        JSON_THROW(type_error::create(302, concat("type must be array, but is ", j.type_name()), &j));
-    }
-
-    return from_json_tuple_impl(std::forward<BasicJsonType>(j), std::forward<TupleRelated>(t), priority_tag<3> {});
-}
-
-template < typename BasicJsonType, typename Key, typename Value, typename Compare, typename Allocator,
-           typename = enable_if_t < !std::is_constructible <
-                                        typename BasicJsonType::string_t, Key >::value >>
-inline void from_json(const BasicJsonType& j, std::map<Key, Value, Compare, Allocator>& m)
-{
-    if (JSON_HEDLEY_UNLIKELY(!j.is_array()))
-    {
-        JSON_THROW(type_error::create(302, concat("type must be array, but is ", j.type_name()), &j));
-    }
-    m.clear();
-    for (const auto& p : j)
-    {
-        if (JSON_HEDLEY_UNLIKELY(!p.is_array()))
-        {
-            JSON_THROW(type_error::create(302, concat("type must be array, but is ", p.type_name()), &j));
-        }
-        m.emplace(p.at(0).template get<Key>(), p.at(1).template get<Value>());
-    }
-}
-
-template < typename BasicJsonType, typename Key, typename Value, typename Hash, typename KeyEqual, typename Allocator,
-           typename = enable_if_t < !std::is_constructible <
-                                        typename BasicJsonType::string_t, Key >::value >>
-inline void from_json(const BasicJsonType& j, std::unordered_map<Key, Value, Hash, KeyEqual, Allocator>& m)
-{
-    if (JSON_HEDLEY_UNLIKELY(!j.is_array()))
-    {
-        JSON_THROW(type_error::create(302, concat("type must be array, but is ", j.type_name()), &j));
-    }
-    m.clear();
-    for (const auto& p : j)
-    {
-        if (JSON_HEDLEY_UNLIKELY(!p.is_array()))
-        {
-            JSON_THROW(type_error::create(302, concat("type must be array, but is ", p.type_name()), &j));
-        }
-        m.emplace(p.at(0).template get<Key>(), p.at(1).template get<Value>());
-    }
-}
-
-#if JSON_HAS_FILESYSTEM || JSON_HAS_EXPERIMENTAL_FILESYSTEM
-template<typename BasicJsonType>
-inline void from_json(const BasicJsonType& j, std_fs::path& p)
-{
-    if (JSON_HEDLEY_UNLIKELY(!j.is_string()))
-    {
-        JSON_THROW(type_error::create(302, concat("type must be string, but is ", j.type_name()), &j));
-    }
-    p = *j.template get_ptr<const typename BasicJsonType::string_t*>();
-}
-#endif
-
-struct from_json_fn
-{
-    template<typename BasicJsonType, typename T>
-    auto operator()(const BasicJsonType& j, T&& val) const
-    noexcept(noexcept(from_json(j, std::forward<T>(val))))
-    -> decltype(from_json(j, std::forward<T>(val)))
-    {
-        return from_json(j, std::forward<T>(val));
-    }
-};
-
-}  // namespace detail
-
-#ifndef JSON_HAS_CPP_17
-/// namespace to hold default `from_json` function
-/// to see why this is required:
-/// http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2015/n4381.html
-namespace // NOLINT(cert-dcl59-cpp,fuchsia-header-anon-namespaces,google-build-namespaces)
-{
-#endif
-JSON_INLINE_VARIABLE constexpr const auto& from_json = // NOLINT(misc-definitions-in-headers)
-    detail::static_const<detail::from_json_fn>::value;
-#ifndef JSON_HAS_CPP_17
-}  // namespace
-#endif
-
-NLOHMANN_JSON_NAMESPACE_END
-
-// #include <nlohmann/detail/conversions/to_json.hpp>
-//     __ _____ _____ _____
-//  __|  |   __|     |   | |  JSON for Modern C++
-// |  |  |__   |  |  | | | |  version 3.11.2
-// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
-//
-// SPDX-FileCopyrightText: 2013-2022 Niels Lohmann <https://nlohmann.me>
-// SPDX-License-Identifier: MIT
-
-
-
-#include <algorithm> // copy
-#include <iterator> // begin, end
-#include <string> // string
-#include <tuple> // tuple, get
-#include <type_traits> // is_same, is_constructible, is_floating_point, is_enum, underlying_type
-#include <utility> // move, forward, declval, pair
-#include <valarray> // valarray
-#include <vector> // vector
-
-// #include <nlohmann/detail/iterators/iteration_proxy.hpp>
-//     __ _____ _____ _____
-//  __|  |   __|     |   | |  JSON for Modern C++
-// |  |  |__   |  |  | | | |  version 3.11.2
-// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
-//
-// SPDX-FileCopyrightText: 2013-2022 Niels Lohmann <https://nlohmann.me>
-// SPDX-License-Identifier: MIT
-
-
-
-#include <cstddef> // size_t
-#include <iterator> // input_iterator_tag
-#include <string> // string, to_string
-#include <tuple> // tuple_size, get, tuple_element
-#include <utility> // move
-
-#if JSON_HAS_RANGES
-    #include <ranges> // enable_borrowed_range
-#endif
-
-// #include <nlohmann/detail/abi_macros.hpp>
-
-// #include <nlohmann/detail/meta/type_traits.hpp>
-
-// #include <nlohmann/detail/value_t.hpp>
-
-
-NLOHMANN_JSON_NAMESPACE_BEGIN
-namespace detail
-{
-
-template<typename string_type>
-void int_to_string( string_type& target, std::size_t value )
-{
-    // For ADL
-    using std::to_string;
-    target = to_string(value);
-}
-template<typename IteratorType> class iteration_proxy_value
-{
-  public:
-    using difference_type = std::ptrdiff_t;
-    using value_type = iteration_proxy_value;
-    using pointer = value_type *;
-    using reference = value_type &;
-    using iterator_category = std::input_iterator_tag;
-    using string_type = typename std::remove_cv< typename std::remove_reference<decltype( std::declval<IteratorType>().key() ) >::type >::type;
-
-  private:
-    /// the iterator
-    IteratorType anchor{};
-    /// an index for arrays (used to create key names)
-    std::size_t array_index = 0;
-    /// last stringified array index
-    mutable std::size_t array_index_last = 0;
-    /// a string representation of the array index
-    mutable string_type array_index_str = "0";
-    /// an empty string (to return a reference for primitive values)
-    string_type empty_str{};
-
-  public:
-    explicit iteration_proxy_value() = default;
-    explicit iteration_proxy_value(IteratorType it, std::size_t array_index_ = 0)
-    noexcept(std::is_nothrow_move_constructible<IteratorType>::value
-             && std::is_nothrow_default_constructible<string_type>::value)
-        : anchor(std::move(it))
-        , array_index(array_index_)
-    {}
-
-    iteration_proxy_value(iteration_proxy_value const&) = default;
-    iteration_proxy_value& operator=(iteration_proxy_value const&) = default;
-    // older GCCs are a bit fussy and require explicit noexcept specifiers on defaulted functions
-    iteration_proxy_value(iteration_proxy_value&&)
-    noexcept(std::is_nothrow_move_constructible<IteratorType>::value
-             && std::is_nothrow_move_constructible<string_type>::value) = default;
-    iteration_proxy_value& operator=(iteration_proxy_value&&)
-    noexcept(std::is_nothrow_move_assignable<IteratorType>::value
-             && std::is_nothrow_move_assignable<string_type>::value) = default;
-    ~iteration_proxy_value() = default;
-
-    /// dereference operator (needed for range-based for)
-    const iteration_proxy_value& operator*() const
-    {
-        return *this;
-    }
-
-    /// increment operator (needed for range-based for)
-    iteration_proxy_value& operator++()
-    {
-        ++anchor;
-        ++array_index;
-
-        return *this;
-    }
-
-    iteration_proxy_value operator++(int)& // NOLINT(cert-dcl21-cpp)
-    {
-        auto tmp = iteration_proxy_value(anchor, array_index);
-        ++anchor;
-        ++array_index;
-        return tmp;
-    }
-
-    /// equality operator (needed for InputIterator)
-    bool operator==(const iteration_proxy_value& o) const
-    {
-        return anchor == o.anchor;
-    }
-
-    /// inequality operator (needed for range-based for)
-    bool operator!=(const iteration_proxy_value& o) const
-    {
-        return anchor != o.anchor;
-    }
-
-    /// return key of the iterator
-    const string_type& key() const
-    {
-        JSON_ASSERT(anchor.m_object != nullptr);
-
-        switch (anchor.m_object->type())
-        {
-            // use integer array index as key
-            case value_t::array:
-            {
-                if (array_index != array_index_last)
-                {
-                    int_to_string( array_index_str, array_index );
-                    array_index_last = array_index;
-                }
-                return array_index_str;
-            }
-
-            // use key from the object
-            case value_t::object:
-                return anchor.key();
-
-            // use an empty key for all primitive types
-            case value_t::null:
-            case value_t::string:
-            case value_t::boolean:
-            case value_t::number_integer:
-            case value_t::number_unsigned:
-            case value_t::number_float:
-            case value_t::binary:
-            case value_t::discarded:
-            default:
-                return empty_str;
-        }
-    }
-
-    /// return value of the iterator
-    typename IteratorType::reference value() const
-    {
-        return anchor.value();
-    }
-};
-
-/// proxy class for the items() function
-template<typename IteratorType> class iteration_proxy
-{
-  private:
-    /// the container to iterate
-    typename IteratorType::pointer container = nullptr;
-
-  public:
-    explicit iteration_proxy() = default;
-
-    /// construct iteration proxy from a container
-    explicit iteration_proxy(typename IteratorType::reference cont) noexcept
-        : container(&cont) {}
-
-    iteration_proxy(iteration_proxy const&) = default;
-    iteration_proxy& operator=(iteration_proxy const&) = default;
-    iteration_proxy(iteration_proxy&&) noexcept = default;
-    iteration_proxy& operator=(iteration_proxy&&) noexcept = default;
-    ~iteration_proxy() = default;
-
-    /// return iterator begin (needed for range-based for)
-    iteration_proxy_value<IteratorType> begin() const noexcept
-    {
-        return iteration_proxy_value<IteratorType>(container->begin());
-    }
-
-    /// return iterator end (needed for range-based for)
-    iteration_proxy_value<IteratorType> end() const noexcept
-    {
-        return iteration_proxy_value<IteratorType>(container->end());
-    }
-};
-
-// Structured Bindings Support
-// For further reference see https://blog.tartanllama.xyz/structured-bindings/
-// And see https://github.com/nlohmann/json/pull/1391
-template<std::size_t N, typename IteratorType, enable_if_t<N == 0, int> = 0>
-auto get(const nlohmann::detail::iteration_proxy_value<IteratorType>& i) -> decltype(i.key())
-{
-    return i.key();
-}
-// Structured Bindings Support
-// For further reference see https://blog.tartanllama.xyz/structured-bindings/
-// And see https://github.com/nlohmann/json/pull/1391
-template<std::size_t N, typename IteratorType, enable_if_t<N == 1, int> = 0>
-auto get(const nlohmann::detail::iteration_proxy_value<IteratorType>& i) -> decltype(i.value())
-{
-    return i.value();
-}
-
-}  // namespace detail
-NLOHMANN_JSON_NAMESPACE_END
-
-// The Addition to the STD Namespace is required to add
-// Structured Bindings Support to the iteration_proxy_value class
-// For further reference see https://blog.tartanllama.xyz/structured-bindings/
-// And see https://github.com/nlohmann/json/pull/1391
-namespace std
-{
-
-#if defined(__clang__)
-    // Fix: https://github.com/nlohmann/json/issues/1401
-    #pragma clang diagnostic push
-    #pragma clang diagnostic ignored "-Wmismatched-tags"
-#endif
-template<typename IteratorType>
-class tuple_size<::nlohmann::detail::iteration_proxy_value<IteratorType>> // NOLINT(cert-dcl58-cpp)
-            : public std::integral_constant<std::size_t, 2> {};
-
-template<std::size_t N, typename IteratorType>
-class tuple_element<N, ::nlohmann::detail::iteration_proxy_value<IteratorType >> // NOLINT(cert-dcl58-cpp)
-{
-  public:
-    using type = decltype(
-                     get<N>(std::declval <
-                            ::nlohmann::detail::iteration_proxy_value<IteratorType >> ()));
-};
-#if defined(__clang__)
-    #pragma clang diagnostic pop
-#endif
-
-}  // namespace std
-
-#if JSON_HAS_RANGES
-    template <typename IteratorType>
-    inline constexpr bool ::std::ranges::enable_borrowed_range<::nlohmann::detail::iteration_proxy<IteratorType>> = true;
-#endif
-
-// #include <nlohmann/detail/macro_scope.hpp>
-
-// #include <nlohmann/detail/meta/cpp_future.hpp>
-
-// #include <nlohmann/detail/meta/std_fs.hpp>
-
-// #include <nlohmann/detail/meta/type_traits.hpp>
-
-// #include <nlohmann/detail/value_t.hpp>
-
-
-NLOHMANN_JSON_NAMESPACE_BEGIN
-namespace detail
-{
-
-//////////////////
-// constructors //
-//////////////////
-
-/*
- * Note all external_constructor<>::construct functions need to call
- * j.m_data.m_value.destroy(j.m_data.m_type) to avoid a memory leak in case j contains an
- * allocated value (e.g., a string). See bug issue
- * https://github.com/nlohmann/json/issues/2865 for more information.
- */
-
-template<value_t> struct external_constructor;
-
-template<>
-struct external_constructor<value_t::boolean>
-{
-    template<typename BasicJsonType>
-    static void construct(BasicJsonType& j, typename BasicJsonType::boolean_t b) noexcept
-    {
-        j.m_data.m_value.destroy(j.m_data.m_type);
-        j.m_data.m_type = value_t::boolean;
-        j.m_data.m_value = b;
-        j.assert_invariant();
-    }
-};
-
-template<>
-struct external_constructor<value_t::string>
-{
-    template<typename BasicJsonType>
-    static void construct(BasicJsonType& j, const typename BasicJsonType::string_t& s)
-    {
-        j.m_data.m_value.destroy(j.m_data.m_type);
-        j.m_data.m_type = value_t::string;
-        j.m_data.m_value = s;
-        j.assert_invariant();
-    }
-
-    template<typename BasicJsonType>
-    static void construct(BasicJsonType& j, typename BasicJsonType::string_t&& s)
-    {
-        j.m_data.m_value.destroy(j.m_data.m_type);
-        j.m_data.m_type = value_t::string;
-        j.m_data.m_value = std::move(s);
-        j.assert_invariant();
-    }
-
-    template < typename BasicJsonType, typename CompatibleStringType,
-               enable_if_t < !std::is_same<CompatibleStringType, typename BasicJsonType::string_t>::value,
-                             int > = 0 >
-    static void construct(BasicJsonType& j, const CompatibleStringType& str)
-    {
-        j.m_data.m_value.destroy(j.m_data.m_type);
-        j.m_data.m_type = value_t::string;
-        j.m_data.m_value.string = j.template create<typename BasicJsonType::string_t>(str);
-        j.assert_invariant();
-    }
-};
-
-template<>
-struct external_constructor<value_t::binary>
-{
-    template<typename BasicJsonType>
-    static void construct(BasicJsonType& j, const typename BasicJsonType::binary_t& b)
-    {
-        j.m_data.m_value.destroy(j.m_data.m_type);
-        j.m_data.m_type = value_t::binary;
-        j.m_data.m_value = typename BasicJsonType::binary_t(b);
-        j.assert_invariant();
-    }
-
-    template<typename BasicJsonType>
-    static void construct(BasicJsonType& j, typename BasicJsonType::binary_t&& b)
-    {
-        j.m_data.m_value.destroy(j.m_data.m_type);
-        j.m_data.m_type = value_t::binary;
-        j.m_data.m_value = typename BasicJsonType::binary_t(std::move(b));
-        j.assert_invariant();
-    }
-};
-
-template<>
-struct external_constructor<value_t::number_float>
-{
-    template<typename BasicJsonType>
-    static void construct(BasicJsonType& j, typename BasicJsonType::number_float_t val) noexcept
-    {
-        j.m_data.m_value.destroy(j.m_data.m_type);
-        j.m_data.m_type = value_t::number_float;
-        j.m_data.m_value = val;
-        j.assert_invariant();
-    }
-};
-
-template<>
-struct external_constructor<value_t::number_unsigned>
-{
-    template<typename BasicJsonType>
-    static void construct(BasicJsonType& j, typename BasicJsonType::number_unsigned_t val) noexcept
-    {
-        j.m_data.m_value.destroy(j.m_data.m_type);
-        j.m_data.m_type = value_t::number_unsigned;
-        j.m_data.m_value = val;
-        j.assert_invariant();
-    }
-};
-
-template<>
-struct external_constructor<value_t::number_integer>
-{
-    template<typename BasicJsonType>
-    static void construct(BasicJsonType& j, typename BasicJsonType::number_integer_t val) noexcept
-    {
-        j.m_data.m_value.destroy(j.m_data.m_type);
-        j.m_data.m_type = value_t::number_integer;
-        j.m_data.m_value = val;
-        j.assert_invariant();
-    }
-};
-
-template<>
-struct external_constructor<value_t::array>
-{
-    template<typename BasicJsonType>
-    static void construct(BasicJsonType& j, const typename BasicJsonType::array_t& arr)
-    {
-        j.m_data.m_value.destroy(j.m_data.m_type);
-        j.m_data.m_type = value_t::array;
-        j.m_data.m_value = arr;
-        j.set_parents();
-        j.assert_invariant();
-    }
-
-    template<typename BasicJsonType>
-    static void construct(BasicJsonType& j, typename BasicJsonType::array_t&& arr)
-    {
-        j.m_data.m_value.destroy(j.m_data.m_type);
-        j.m_data.m_type = value_t::array;
-        j.m_data.m_value = std::move(arr);
-        j.set_parents();
-        j.assert_invariant();
-    }
-
-    template < typename BasicJsonType, typename CompatibleArrayType,
-               enable_if_t < !std::is_same<CompatibleArrayType, typename BasicJsonType::array_t>::value,
-                             int > = 0 >
-    static void construct(BasicJsonType& j, const CompatibleArrayType& arr)
-    {
-        using std::begin;
-        using std::end;
-
-        j.m_data.m_value.destroy(j.m_data.m_type);
-        j.m_data.m_type = value_t::array;
-        j.m_data.m_value.array = j.template create<typename BasicJsonType::array_t>(begin(arr), end(arr));
-        j.set_parents();
-        j.assert_invariant();
-    }
-
-    template<typename BasicJsonType>
-    static void construct(BasicJsonType& j, const std::vector<bool>& arr)
-    {
-        j.m_data.m_value.destroy(j.m_data.m_type);
-        j.m_data.m_type = value_t::array;
-        j.m_data.m_value = value_t::array;
-        j.m_data.m_value.array->reserve(arr.size());
-        for (const bool x : arr)
-        {
-            j.m_data.m_value.array->push_back(x);
-            j.set_parent(j.m_data.m_value.array->back());
-        }
-        j.assert_invariant();
-    }
-
-    template<typename BasicJsonType, typename T,
-             enable_if_t<std::is_convertible<T, BasicJsonType>::value, int> = 0>
-    static void construct(BasicJsonType& j, const std::valarray<T>& arr)
-    {
-        j.m_data.m_value.destroy(j.m_data.m_type);
-        j.m_data.m_type = value_t::array;
-        j.m_data.m_value = value_t::array;
-        j.m_data.m_value.array->resize(arr.size());
-        if (arr.size() > 0)
-        {
-            std::copy(std::begin(arr), std::end(arr), j.m_data.m_value.array->begin());
-        }
-        j.set_parents();
-        j.assert_invariant();
-    }
-};
-
-template<>
-struct external_constructor<value_t::object>
-{
-    template<typename BasicJsonType>
-    static void construct(BasicJsonType& j, const typename BasicJsonType::object_t& obj)
-    {
-        j.m_data.m_value.destroy(j.m_data.m_type);
-        j.m_data.m_type = value_t::object;
-        j.m_data.m_value = obj;
-        j.set_parents();
-        j.assert_invariant();
-    }
-
-    template<typename BasicJsonType>
-    static void construct(BasicJsonType& j, typename BasicJsonType::object_t&& obj)
-    {
-        j.m_data.m_value.destroy(j.m_data.m_type);
-        j.m_data.m_type = value_t::object;
-        j.m_data.m_value = std::move(obj);
-        j.set_parents();
-        j.assert_invariant();
-    }
-
-    template < typename BasicJsonType, typename CompatibleObjectType,
-               enable_if_t < !std::is_same<CompatibleObjectType, typename BasicJsonType::object_t>::value, int > = 0 >
-    static void construct(BasicJsonType& j, const CompatibleObjectType& obj)
-    {
-        using std::begin;
-        using std::end;
-
-        j.m_data.m_value.destroy(j.m_data.m_type);
-        j.m_data.m_type = value_t::object;
-        j.m_data.m_value.object = j.template create<typename BasicJsonType::object_t>(begin(obj), end(obj));
-        j.set_parents();
-        j.assert_invariant();
-    }
-};
-
-/////////////
-// to_json //
-/////////////
-
-template<typename BasicJsonType, typename T,
-         enable_if_t<std::is_same<T, typename BasicJsonType::boolean_t>::value, int> = 0>
-inline void to_json(BasicJsonType& j, T b) noexcept
-{
-    external_constructor<value_t::boolean>::construct(j, b);
-}
-
-template < typename BasicJsonType, typename BoolRef,
-           enable_if_t <
-               ((std::is_same<std::vector<bool>::reference, BoolRef>::value
-                 && !std::is_same <std::vector<bool>::reference, typename BasicJsonType::boolean_t&>::value)
-                || (std::is_same<std::vector<bool>::const_reference, BoolRef>::value
-                    && !std::is_same <detail::uncvref_t<std::vector<bool>::const_reference>,
-                                      typename BasicJsonType::boolean_t >::value))
-               && std::is_convertible<const BoolRef&, typename BasicJsonType::boolean_t>::value, int > = 0 >
-inline void to_json(BasicJsonType& j, const BoolRef& b) noexcept
-{
-    external_constructor<value_t::boolean>::construct(j, static_cast<typename BasicJsonType::boolean_t>(b));
-}
-
-template<typename BasicJsonType, typename CompatibleString,
-         enable_if_t<std::is_constructible<typename BasicJsonType::string_t, CompatibleString>::value, int> = 0>
-inline void to_json(BasicJsonType& j, const CompatibleString& s)
-{
-    external_constructor<value_t::string>::construct(j, s);
-}
-
-template<typename BasicJsonType>
-inline void to_json(BasicJsonType& j, typename BasicJsonType::string_t&& s)
-{
-    external_constructor<value_t::string>::construct(j, std::move(s));
-}
-
-template<typename BasicJsonType, typename FloatType,
-         enable_if_t<std::is_floating_point<FloatType>::value, int> = 0>
-inline void to_json(BasicJsonType& j, FloatType val) noexcept
-{
-    external_constructor<value_t::number_float>::construct(j, static_cast<typename BasicJsonType::number_float_t>(val));
-}
-
-template<typename BasicJsonType, typename CompatibleNumberUnsignedType,
-         enable_if_t<is_compatible_integer_type<typename BasicJsonType::number_unsigned_t, CompatibleNumberUnsignedType>::value, int> = 0>
-inline void to_json(BasicJsonType& j, CompatibleNumberUnsignedType val) noexcept
-{
-    external_constructor<value_t::number_unsigned>::construct(j, static_cast<typename BasicJsonType::number_unsigned_t>(val));
-}
-
-template<typename BasicJsonType, typename CompatibleNumberIntegerType,
-         enable_if_t<is_compatible_integer_type<typename BasicJsonType::number_integer_t, CompatibleNumberIntegerType>::value, int> = 0>
-inline void to_json(BasicJsonType& j, CompatibleNumberIntegerType val) noexcept
-{
-    external_constructor<value_t::number_integer>::construct(j, static_cast<typename BasicJsonType::number_integer_t>(val));
-}
-
-#if !JSON_DISABLE_ENUM_SERIALIZATION
-template<typename BasicJsonType, typename EnumType,
-         enable_if_t<std::is_enum<EnumType>::value, int> = 0>
-inline void to_json(BasicJsonType& j, EnumType e) noexcept
-{
-    using underlying_type = typename std::underlying_type<EnumType>::type;
-    external_constructor<value_t::number_integer>::construct(j, static_cast<underlying_type>(e));
-}
-#endif  // JSON_DISABLE_ENUM_SERIALIZATION
-
-template<typename BasicJsonType>
-inline void to_json(BasicJsonType& j, const std::vector<bool>& e)
-{
-    external_constructor<value_t::array>::construct(j, e);
-}
-
-template < typename BasicJsonType, typename CompatibleArrayType,
-           enable_if_t < is_compatible_array_type<BasicJsonType,
-                         CompatibleArrayType>::value&&
-                         !is_compatible_object_type<BasicJsonType, CompatibleArrayType>::value&&
-                         !is_compatible_string_type<BasicJsonType, CompatibleArrayType>::value&&
-                         !std::is_same<typename BasicJsonType::binary_t, CompatibleArrayType>::value&&
-                         !is_basic_json<CompatibleArrayType>::value,
-                         int > = 0 >
-inline void to_json(BasicJsonType& j, const CompatibleArrayType& arr)
-{
-    external_constructor<value_t::array>::construct(j, arr);
-}
-
-template<typename BasicJsonType>
-inline void to_json(BasicJsonType& j, const typename BasicJsonType::binary_t& bin)
-{
-    external_constructor<value_t::binary>::construct(j, bin);
-}
-
-template<typename BasicJsonType, typename T,
-         enable_if_t<std::is_convertible<T, BasicJsonType>::value, int> = 0>
-inline void to_json(BasicJsonType& j, const std::valarray<T>& arr)
-{
-    external_constructor<value_t::array>::construct(j, std::move(arr));
-}
-
-template<typename BasicJsonType>
-inline void to_json(BasicJsonType& j, typename BasicJsonType::array_t&& arr)
-{
-    external_constructor<value_t::array>::construct(j, std::move(arr));
-}
-
-template < typename BasicJsonType, typename CompatibleObjectType,
-           enable_if_t < is_compatible_object_type<BasicJsonType, CompatibleObjectType>::value&& !is_basic_json<CompatibleObjectType>::value, int > = 0 >
-inline void to_json(BasicJsonType& j, const CompatibleObjectType& obj)
-{
-    external_constructor<value_t::object>::construct(j, obj);
-}
-
-template<typename BasicJsonType>
-inline void to_json(BasicJsonType& j, typename BasicJsonType::object_t&& obj)
-{
-    external_constructor<value_t::object>::construct(j, std::move(obj));
-}
-
-template <
-    typename BasicJsonType, typename T, std::size_t N,
-    enable_if_t < !std::is_constructible<typename BasicJsonType::string_t,
-                  const T(&)[N]>::value, // NOLINT(cppcoreguidelines-avoid-c-arrays,hicpp-avoid-c-arrays,modernize-avoid-c-arrays)
-                  int > = 0 >
-inline void to_json(BasicJsonType& j, const T(&arr)[N]) // NOLINT(cppcoreguidelines-avoid-c-arrays,hicpp-avoid-c-arrays,modernize-avoid-c-arrays)
-{
-    external_constructor<value_t::array>::construct(j, arr);
-}
-
-template < typename BasicJsonType, typename T1, typename T2, enable_if_t < std::is_constructible<BasicJsonType, T1>::value&& std::is_constructible<BasicJsonType, T2>::value, int > = 0 >
-inline void to_json(BasicJsonType& j, const std::pair<T1, T2>& p)
-{
-    j = { p.first, p.second };
-}
-
-// for https://github.com/nlohmann/json/pull/1134
-template<typename BasicJsonType, typename T,
-         enable_if_t<std::is_same<T, iteration_proxy_value<typename BasicJsonType::iterator>>::value, int> = 0>
-inline void to_json(BasicJsonType& j, const T& b)
-{
-    j = { {b.key(), b.value()} };
-}
-
-template<typename BasicJsonType, typename Tuple, std::size_t... Idx>
-inline void to_json_tuple_impl(BasicJsonType& j, const Tuple& t, index_sequence<Idx...> /*unused*/)
-{
-    j = { std::get<Idx>(t)... };
-}
-
-template<typename BasicJsonType, typename T, enable_if_t<is_constructible_tuple<BasicJsonType, T>::value, int > = 0>
-inline void to_json(BasicJsonType& j, const T& t)
-{
-    to_json_tuple_impl(j, t, make_index_sequence<std::tuple_size<T>::value> {});
-}
-
-#if JSON_HAS_FILESYSTEM || JSON_HAS_EXPERIMENTAL_FILESYSTEM
-template<typename BasicJsonType>
-inline void to_json(BasicJsonType& j, const std_fs::path& p)
-{
-    j = p.string();
-}
-#endif
-
-struct to_json_fn
-{
-    template<typename BasicJsonType, typename T>
-    auto operator()(BasicJsonType& j, T&& val) const noexcept(noexcept(to_json(j, std::forward<T>(val))))
-    -> decltype(to_json(j, std::forward<T>(val)), void())
-    {
-        return to_json(j, std::forward<T>(val));
-    }
-};
-}  // namespace detail
-
-#ifndef JSON_HAS_CPP_17
-/// namespace to hold default `to_json` function
-/// to see why this is required:
-/// http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2015/n4381.html
-namespace // NOLINT(cert-dcl59-cpp,fuchsia-header-anon-namespaces,google-build-namespaces)
-{
-#endif
-JSON_INLINE_VARIABLE constexpr const auto& to_json = // NOLINT(misc-definitions-in-headers)
-    detail::static_const<detail::to_json_fn>::value;
-#ifndef JSON_HAS_CPP_17
-}  // namespace
-#endif
-
-NLOHMANN_JSON_NAMESPACE_END
-
-// #include <nlohmann/detail/meta/identity_tag.hpp>
-
-
-NLOHMANN_JSON_NAMESPACE_BEGIN
-
-/// @sa https://json.nlohmann.me/api/adl_serializer/
-template<typename ValueType, typename>
-struct adl_serializer
-{
-    /// @brief convert a JSON value to any value type
-    /// @sa https://json.nlohmann.me/api/adl_serializer/from_json/
-    template<typename BasicJsonType, typename TargetType = ValueType>
-    static auto from_json(BasicJsonType && j, TargetType& val) noexcept(
-        noexcept(::nlohmann::from_json(std::forward<BasicJsonType>(j), val)))
-    -> decltype(::nlohmann::from_json(std::forward<BasicJsonType>(j), val), void())
-    {
-        ::nlohmann::from_json(std::forward<BasicJsonType>(j), val);
-    }
-
-    /// @brief convert a JSON value to any value type
-    /// @sa https://json.nlohmann.me/api/adl_serializer/from_json/
-    template<typename BasicJsonType, typename TargetType = ValueType>
-    static auto from_json(BasicJsonType && j) noexcept(
-    noexcept(::nlohmann::from_json(std::forward<BasicJsonType>(j), detail::identity_tag<TargetType> {})))
-    -> decltype(::nlohmann::from_json(std::forward<BasicJsonType>(j), detail::identity_tag<TargetType> {}))
-    {
-        return ::nlohmann::from_json(std::forward<BasicJsonType>(j), detail::identity_tag<TargetType> {});
-    }
-
-    /// @brief convert any value type to a JSON value
-    /// @sa https://json.nlohmann.me/api/adl_serializer/to_json/
-    template<typename BasicJsonType, typename TargetType = ValueType>
-    static auto to_json(BasicJsonType& j, TargetType && val) noexcept(
-        noexcept(::nlohmann::to_json(j, std::forward<TargetType>(val))))
-    -> decltype(::nlohmann::to_json(j, std::forward<TargetType>(val)), void())
-    {
-        ::nlohmann::to_json(j, std::forward<TargetType>(val));
-    }
-};
-
-NLOHMANN_JSON_NAMESPACE_END
-
-// #include <nlohmann/byte_container_with_subtype.hpp>
-//     __ _____ _____ _____
-//  __|  |   __|     |   | |  JSON for Modern C++
-// |  |  |__   |  |  | | | |  version 3.11.2
-// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
-//
-// SPDX-FileCopyrightText: 2013-2022 Niels Lohmann <https://nlohmann.me>
-// SPDX-License-Identifier: MIT
-
-
-
-#include <cstdint> // uint8_t, uint64_t
-#include <tuple> // tie
-#include <utility> // move
-
-// #include <nlohmann/detail/abi_macros.hpp>
-
-
-NLOHMANN_JSON_NAMESPACE_BEGIN
-
-/// @brief an internal type for a backed binary type
-/// @sa https://json.nlohmann.me/api/byte_container_with_subtype/
-template<typename BinaryType>
-class byte_container_with_subtype : public BinaryType
-{
-  public:
-    using container_type = BinaryType;
-    using subtype_type = std::uint64_t;
-
-    /// @sa https://json.nlohmann.me/api/byte_container_with_subtype/byte_container_with_subtype/
-    byte_container_with_subtype() noexcept(noexcept(container_type()))
-        : container_type()
-    {}
-
-    /// @sa https://json.nlohmann.me/api/byte_container_with_subtype/byte_container_with_subtype/
-    byte_container_with_subtype(const container_type& b) noexcept(noexcept(container_type(b)))
-        : container_type(b)
-    {}
-
-    /// @sa https://json.nlohmann.me/api/byte_container_with_subtype/byte_container_with_subtype/
-    byte_container_with_subtype(container_type&& b) noexcept(noexcept(container_type(std::move(b))))
-        : container_type(std::move(b))
-    {}
-
-    /// @sa https://json.nlohmann.me/api/byte_container_with_subtype/byte_container_with_subtype/
-    byte_container_with_subtype(const container_type& b, subtype_type subtype_) noexcept(noexcept(container_type(b)))
-        : container_type(b)
-        , m_subtype(subtype_)
-        , m_has_subtype(true)
-    {}
-
-    /// @sa https://json.nlohmann.me/api/byte_container_with_subtype/byte_container_with_subtype/
-    byte_container_with_subtype(container_type&& b, subtype_type subtype_) noexcept(noexcept(container_type(std::move(b))))
-        : container_type(std::move(b))
-        , m_subtype(subtype_)
-        , m_has_subtype(true)
-    {}
-
-    bool operator==(const byte_container_with_subtype& rhs) const
-    {
-        return std::tie(static_cast<const BinaryType&>(*this), m_subtype, m_has_subtype) ==
-               std::tie(static_cast<const BinaryType&>(rhs), rhs.m_subtype, rhs.m_has_subtype);
-    }
-
-    bool operator!=(const byte_container_with_subtype& rhs) const
-    {
-        return !(rhs == *this);
-    }
-
-    /// @brief sets the binary subtype
-    /// @sa https://json.nlohmann.me/api/byte_container_with_subtype/set_subtype/
-    void set_subtype(subtype_type subtype_) noexcept
-    {
-        m_subtype = subtype_;
-        m_has_subtype = true;
-    }
-
-    /// @brief return the binary subtype
-    /// @sa https://json.nlohmann.me/api/byte_container_with_subtype/subtype/
-    constexpr subtype_type subtype() const noexcept
-    {
-        return m_has_subtype ? m_subtype : static_cast<subtype_type>(-1);
-    }
-
-    /// @brief return whether the value has a subtype
-    /// @sa https://json.nlohmann.me/api/byte_container_with_subtype/has_subtype/
-    constexpr bool has_subtype() const noexcept
-    {
-        return m_has_subtype;
-    }
-
-    /// @brief clears the binary subtype
-    /// @sa https://json.nlohmann.me/api/byte_container_with_subtype/clear_subtype/
-    void clear_subtype() noexcept
-    {
-        m_subtype = 0;
-        m_has_subtype = false;
-    }
-
-  private:
-    subtype_type m_subtype = 0;
-    bool m_has_subtype = false;
-};
-
-NLOHMANN_JSON_NAMESPACE_END
-
-// #include <nlohmann/detail/conversions/from_json.hpp>
-
-// #include <nlohmann/detail/conversions/to_json.hpp>
-
-// #include <nlohmann/detail/exceptions.hpp>
-
-// #include <nlohmann/detail/hash.hpp>
-//     __ _____ _____ _____
-//  __|  |   __|     |   | |  JSON for Modern C++
-// |  |  |__   |  |  | | | |  version 3.11.2
-// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
-//
-// SPDX-FileCopyrightText: 2013-2022 Niels Lohmann <https://nlohmann.me>
-// SPDX-License-Identifier: MIT
-
-
-
-#include <cstdint> // uint8_t
-#include <cstddef> // size_t
-#include <functional> // hash
-
-// #include <nlohmann/detail/abi_macros.hpp>
-
-// #include <nlohmann/detail/value_t.hpp>
-
-
-NLOHMANN_JSON_NAMESPACE_BEGIN
-namespace detail
-{
-
-// boost::hash_combine
-inline std::size_t combine(std::size_t seed, std::size_t h) noexcept
-{
-    seed ^= h + 0x9e3779b9 + (seed << 6U) + (seed >> 2U);
-    return seed;
-}
-
-/*!
-@brief hash a JSON value
-
-The hash function tries to rely on std::hash where possible. Furthermore, the
-type of the JSON value is taken into account to have different hash values for
-null, 0, 0U, and false, etc.
-
-@tparam BasicJsonType basic_json specialization
-@param j JSON value to hash
-@return hash value of j
-*/
-template<typename BasicJsonType>
-std::size_t hash(const BasicJsonType& j)
-{
-    using string_t = typename BasicJsonType::string_t;
-    using number_integer_t = typename BasicJsonType::number_integer_t;
-    using number_unsigned_t = typename BasicJsonType::number_unsigned_t;
-    using number_float_t = typename BasicJsonType::number_float_t;
-
-    const auto type = static_cast<std::size_t>(j.type());
-    switch (j.type())
-    {
-        case BasicJsonType::value_t::null:
-        case BasicJsonType::value_t::discarded:
-        {
-            return combine(type, 0);
-        }
-
-        case BasicJsonType::value_t::object:
-        {
-            auto seed = combine(type, j.size());
-            for (const auto& element : j.items())
-            {
-                const auto h = std::hash<string_t> {}(element.key());
-                seed = combine(seed, h);
-                seed = combine(seed, hash(element.value()));
-            }
-            return seed;
-        }
-
-        case BasicJsonType::value_t::array:
-        {
-            auto seed = combine(type, j.size());
-            for (const auto& element : j)
-            {
-                seed = combine(seed, hash(element));
-            }
-            return seed;
-        }
-
-        case BasicJsonType::value_t::string:
-        {
-            const auto h = std::hash<string_t> {}(j.template get_ref<const string_t&>());
-            return combine(type, h);
-        }
-
-        case BasicJsonType::value_t::boolean:
-        {
-            const auto h = std::hash<bool> {}(j.template get<bool>());
-            return combine(type, h);
-        }
-
-        case BasicJsonType::value_t::number_integer:
-        {
-            const auto h = std::hash<number_integer_t> {}(j.template get<number_integer_t>());
-            return combine(type, h);
-        }
-
-        case BasicJsonType::value_t::number_unsigned:
-        {
-            const auto h = std::hash<number_unsigned_t> {}(j.template get<number_unsigned_t>());
-            return combine(type, h);
-        }
-
-        case BasicJsonType::value_t::number_float:
-        {
-            const auto h = std::hash<number_float_t> {}(j.template get<number_float_t>());
-            return combine(type, h);
-        }
-
-        case BasicJsonType::value_t::binary:
-        {
-            auto seed = combine(type, j.get_binary().size());
-            const auto h = std::hash<bool> {}(j.get_binary().has_subtype());
-            seed = combine(seed, h);
-            seed = combine(seed, static_cast<std::size_t>(j.get_binary().subtype()));
-            for (const auto byte : j.get_binary())
-            {
-                seed = combine(seed, std::hash<std::uint8_t> {}(byte));
-            }
-            return seed;
-        }
-
-        default:                   // LCOV_EXCL_LINE
-            JSON_ASSERT(false); // NOLINT(cert-dcl03-c,hicpp-static-assert,misc-static-assert) LCOV_EXCL_LINE
-            return 0;              // LCOV_EXCL_LINE
-    }
-}
-
-}  // namespace detail
-NLOHMANN_JSON_NAMESPACE_END
-
-// #include <nlohmann/detail/input/binary_reader.hpp>
-//     __ _____ _____ _____
-//  __|  |   __|     |   | |  JSON for Modern C++
-// |  |  |__   |  |  | | | |  version 3.11.2
-// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
-//
-// SPDX-FileCopyrightText: 2013-2022 Niels Lohmann <https://nlohmann.me>
-// SPDX-License-Identifier: MIT
-
-
-
-#include <algorithm> // generate_n
-#include <array> // array
-#include <cmath> // ldexp
-#include <cstddef> // size_t
-#include <cstdint> // uint8_t, uint16_t, uint32_t, uint64_t
-#include <cstdio> // snprintf
-#include <cstring> // memcpy
-#include <iterator> // back_inserter
-#include <limits> // numeric_limits
-#include <string> // char_traits, string
-#include <utility> // make_pair, move
-#include <vector> // vector
-
-// #include <nlohmann/detail/exceptions.hpp>
-
-// #include <nlohmann/detail/input/input_adapters.hpp>
-//     __ _____ _____ _____
-//  __|  |   __|     |   | |  JSON for Modern C++
-// |  |  |__   |  |  | | | |  version 3.11.2
-// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
-//
-// SPDX-FileCopyrightText: 2013-2022 Niels Lohmann <https://nlohmann.me>
-// SPDX-License-Identifier: MIT
-
-
-
-#include <array> // array
-#include <cstddef> // size_t
-#include <cstring> // strlen
-#include <iterator> // begin, end, iterator_traits, random_access_iterator_tag, distance, next
-#include <memory> // shared_ptr, make_shared, addressof
-#include <numeric> // accumulate
-#include <string> // string, char_traits
-#include <type_traits> // enable_if, is_base_of, is_pointer, is_integral, remove_pointer
-#include <utility> // pair, declval
-
-#ifndef JSON_NO_IO
-    #include <cstdio>   // FILE *
-    #include <istream>  // istream
-#endif                  // JSON_NO_IO
-
-// #include <nlohmann/detail/iterators/iterator_traits.hpp>
-
-// #include <nlohmann/detail/macro_scope.hpp>
-
-
-NLOHMANN_JSON_NAMESPACE_BEGIN
-namespace detail
-{
-
-/// the supported input formats
-enum class input_format_t { json, cbor, msgpack, ubjson, bson, bjdata };
-
-////////////////////
-// input adapters //
-////////////////////
-
-#ifndef JSON_NO_IO
-/*!
-Input adapter for stdio file access. This adapter read only 1 byte and do not use any
- buffer. This adapter is a very low level adapter.
-*/
-class file_input_adapter
-{
-  public:
-    using char_type = char;
-
-    JSON_HEDLEY_NON_NULL(2)
-    explicit file_input_adapter(std::FILE* f) noexcept
-        : m_file(f)
-    {
-        JSON_ASSERT(m_file != nullptr);
-    }
-
-    // make class move-only
-    file_input_adapter(const file_input_adapter&) = delete;
-    file_input_adapter(file_input_adapter&&) noexcept = default;
-    file_input_adapter& operator=(const file_input_adapter&) = delete;
-    file_input_adapter& operator=(file_input_adapter&&) = delete;
-    ~file_input_adapter() = default;
-
-    std::char_traits<char>::int_type get_character() noexcept
-    {
-        return std::fgetc(m_file);
-    }
-
-  private:
-    /// the file pointer to read from
-    std::FILE* m_file;
-};
-
-
-/*!
-Input adapter for a (caching) istream. Ignores a UFT Byte Order Mark at
-beginning of input. Does not support changing the underlying std::streambuf
-in mid-input. Maintains underlying std::istream and std::streambuf to support
-subsequent use of standard std::istream operations to process any input
-characters following those used in parsing the JSON input.  Clears the
-std::istream flags; any input errors (e.g., EOF) will be detected by the first
-subsequent call for input from the std::istream.
-*/
-class input_stream_adapter
-{
-  public:
-    using char_type = char;
-
-    ~input_stream_adapter()
-    {
-        // clear stream flags; we use underlying streambuf I/O, do not
-        // maintain ifstream flags, except eof
-        if (is != nullptr)
-        {
-            is->clear(is->rdstate() & std::ios::eofbit);
-        }
-    }
-
-    explicit input_stream_adapter(std::istream& i)
-        : is(&i), sb(i.rdbuf())
-    {}
-
-    // delete because of pointer members
-    input_stream_adapter(const input_stream_adapter&) = delete;
-    input_stream_adapter& operator=(input_stream_adapter&) = delete;
-    input_stream_adapter& operator=(input_stream_adapter&&) = delete;
-
-    input_stream_adapter(input_stream_adapter&& rhs) noexcept
-        : is(rhs.is), sb(rhs.sb)
-    {
-        rhs.is = nullptr;
-        rhs.sb = nullptr;
-    }
-
-    // std::istream/std::streambuf use std::char_traits<char>::to_int_type, to
-    // ensure that std::char_traits<char>::eof() and the character 0xFF do not
-    // end up as the same value, e.g. 0xFFFFFFFF.
-    std::char_traits<char>::int_type get_character()
-    {
-        auto res = sb->sbumpc();
-        // set eof manually, as we don't use the istream interface.
-        if (JSON_HEDLEY_UNLIKELY(res == std::char_traits<char>::eof()))
-        {
-            is->clear(is->rdstate() | std::ios::eofbit);
-        }
-        return res;
-    }
-
-  private:
-    /// the associated input stream
-    std::istream* is = nullptr;
-    std::streambuf* sb = nullptr;
-};
-#endif  // JSON_NO_IO
-
-// General-purpose iterator-based adapter. It might not be as fast as
-// theoretically possible for some containers, but it is extremely versatile.
-template<typename IteratorType>
-class iterator_input_adapter
-{
-  public:
-    using char_type = typename std::iterator_traits<IteratorType>::value_type;
-
-    iterator_input_adapter(IteratorType first, IteratorType last)
-        : current(std::move(first)), end(std::move(last))
-    {}
-
-    typename std::char_traits<char_type>::int_type get_character()
-    {
-        if (JSON_HEDLEY_LIKELY(current != end))
-        {
-            auto result = std::char_traits<char_type>::to_int_type(*current);
-            std::advance(current, 1);
-            return result;
-        }
-
-        return std::char_traits<char_type>::eof();
-    }
-
-  private:
-    IteratorType current;
-    IteratorType end;
-
-    template<typename BaseInputAdapter, size_t T>
-    friend struct wide_string_input_helper;
-
-    bool empty() const
-    {
-        return current == end;
-    }
-};
-
-
-template<typename BaseInputAdapter, size_t T>
-struct wide_string_input_helper;
-
-template<typename BaseInputAdapter>
-struct wide_string_input_helper<BaseInputAdapter, 4>
-{
-    // UTF-32
-    static void fill_buffer(BaseInputAdapter& input,
-                            std::array<std::char_traits<char>::int_type, 4>& utf8_bytes,
-                            size_t& utf8_bytes_index,
-                            size_t& utf8_bytes_filled)
-    {
-        utf8_bytes_index = 0;
-
-        if (JSON_HEDLEY_UNLIKELY(input.empty()))
-        {
-            utf8_bytes[0] = std::char_traits<char>::eof();
-            utf8_bytes_filled = 1;
-        }
-        else
-        {
-            // get the current character
-            const auto wc = input.get_character();
-
-            // UTF-32 to UTF-8 encoding
-            if (wc < 0x80)
-            {
-                utf8_bytes[0] = static_cast<std::char_traits<char>::int_type>(wc);
-                utf8_bytes_filled = 1;
-            }
-            else if (wc <= 0x7FF)
-            {
-                utf8_bytes[0] = static_cast<std::char_traits<char>::int_type>(0xC0u | ((static_cast<unsigned int>(wc) >> 6u) & 0x1Fu));
-                utf8_bytes[1] = static_cast<std::char_traits<char>::int_type>(0x80u | (static_cast<unsigned int>(wc) & 0x3Fu));
-                utf8_bytes_filled = 2;
-            }
-            else if (wc <= 0xFFFF)
-            {
-                utf8_bytes[0] = static_cast<std::char_traits<char>::int_type>(0xE0u | ((static_cast<unsigned int>(wc) >> 12u) & 0x0Fu));
-                utf8_bytes[1] = static_cast<std::char_traits<char>::int_type>(0x80u | ((static_cast<unsigned int>(wc) >> 6u) & 0x3Fu));
-                utf8_bytes[2] = static_cast<std::char_traits<char>::int_type>(0x80u | (static_cast<unsigned int>(wc) & 0x3Fu));
-                utf8_bytes_filled = 3;
-            }
-            else if (wc <= 0x10FFFF)
-            {
-                utf8_bytes[0] = static_cast<std::char_traits<char>::int_type>(0xF0u | ((static_cast<unsigned int>(wc) >> 18u) & 0x07u));
-                utf8_bytes[1] = static_cast<std::char_traits<char>::int_type>(0x80u | ((static_cast<unsigned int>(wc) >> 12u) & 0x3Fu));
-                utf8_bytes[2] = static_cast<std::char_traits<char>::int_type>(0x80u | ((static_cast<unsigned int>(wc) >> 6u) & 0x3Fu));
-                utf8_bytes[3] = static_cast<std::char_traits<char>::int_type>(0x80u | (static_cast<unsigned int>(wc) & 0x3Fu));
-                utf8_bytes_filled = 4;
-            }
-            else
-            {
-                // unknown character
-                utf8_bytes[0] = static_cast<std::char_traits<char>::int_type>(wc);
-                utf8_bytes_filled = 1;
-            }
-        }
-    }
-};
-
-template<typename BaseInputAdapter>
-struct wide_string_input_helper<BaseInputAdapter, 2>
-{
-    // UTF-16
-    static void fill_buffer(BaseInputAdapter& input,
-                            std::array<std::char_traits<char>::int_type, 4>& utf8_bytes,
-                            size_t& utf8_bytes_index,
-                            size_t& utf8_bytes_filled)
-    {
-        utf8_bytes_index = 0;
-
-        if (JSON_HEDLEY_UNLIKELY(input.empty()))
-        {
-            utf8_bytes[0] = std::char_traits<char>::eof();
-            utf8_bytes_filled = 1;
-        }
-        else
-        {
-            // get the current character
-            const auto wc = input.get_character();
-
-            // UTF-16 to UTF-8 encoding
-            if (wc < 0x80)
-            {
-                utf8_bytes[0] = static_cast<std::char_traits<char>::int_type>(wc);
-                utf8_bytes_filled = 1;
-            }
-            else if (wc <= 0x7FF)
-            {
-                utf8_bytes[0] = static_cast<std::char_traits<char>::int_type>(0xC0u | ((static_cast<unsigned int>(wc) >> 6u)));
-                utf8_bytes[1] = static_cast<std::char_traits<char>::int_type>(0x80u | (static_cast<unsigned int>(wc) & 0x3Fu));
-                utf8_bytes_filled = 2;
-            }
-            else if (0xD800 > wc || wc >= 0xE000)
-            {
-                utf8_bytes[0] = static_cast<std::char_traits<char>::int_type>(0xE0u | ((static_cast<unsigned int>(wc) >> 12u)));
-                utf8_bytes[1] = static_cast<std::char_traits<char>::int_type>(0x80u | ((static_cast<unsigned int>(wc) >> 6u) & 0x3Fu));
-                utf8_bytes[2] = static_cast<std::char_traits<char>::int_type>(0x80u | (static_cast<unsigned int>(wc) & 0x3Fu));
-                utf8_bytes_filled = 3;
-            }
-            else
-            {
-                if (JSON_HEDLEY_UNLIKELY(!input.empty()))
-                {
-                    const auto wc2 = static_cast<unsigned int>(input.get_character());
-                    const auto charcode = 0x10000u + (((static_cast<unsigned int>(wc) & 0x3FFu) << 10u) | (wc2 & 0x3FFu));
-                    utf8_bytes[0] = static_cast<std::char_traits<char>::int_type>(0xF0u | (charcode >> 18u));
-                    utf8_bytes[1] = static_cast<std::char_traits<char>::int_type>(0x80u | ((charcode >> 12u) & 0x3Fu));
-                    utf8_bytes[2] = static_cast<std::char_traits<char>::int_type>(0x80u | ((charcode >> 6u) & 0x3Fu));
-                    utf8_bytes[3] = static_cast<std::char_traits<char>::int_type>(0x80u | (charcode & 0x3Fu));
-                    utf8_bytes_filled = 4;
-                }
-                else
-                {
-                    utf8_bytes[0] = static_cast<std::char_traits<char>::int_type>(wc);
-                    utf8_bytes_filled = 1;
-                }
-            }
-        }
-    }
-};
-
-// Wraps another input apdater to convert wide character types into individual bytes.
-template<typename BaseInputAdapter, typename WideCharType>
-class wide_string_input_adapter
-{
-  public:
-    using char_type = char;
-
-    wide_string_input_adapter(BaseInputAdapter base)
-        : base_adapter(base) {}
-
-    typename std::char_traits<char>::int_type get_character() noexcept
-    {
-        // check if buffer needs to be filled
-        if (utf8_bytes_index == utf8_bytes_filled)
-        {
-            fill_buffer<sizeof(WideCharType)>();
-
-            JSON_ASSERT(utf8_bytes_filled > 0);
-            JSON_ASSERT(utf8_bytes_index == 0);
-        }
-
-        // use buffer
-        JSON_ASSERT(utf8_bytes_filled > 0);
-        JSON_ASSERT(utf8_bytes_index < utf8_bytes_filled);
-        return utf8_bytes[utf8_bytes_index++];
-    }
-
-  private:
-    BaseInputAdapter base_adapter;
-
-    template<size_t T>
-    void fill_buffer()
-    {
-        wide_string_input_helper<BaseInputAdapter, T>::fill_buffer(base_adapter, utf8_bytes, utf8_bytes_index, utf8_bytes_filled);
-    }
-
-    /// a buffer for UTF-8 bytes
-    std::array<std::char_traits<char>::int_type, 4> utf8_bytes = {{0, 0, 0, 0}};
-
-    /// index to the utf8_codes array for the next valid byte
-    std::size_t utf8_bytes_index = 0;
-    /// number of valid bytes in the utf8_codes array
-    std::size_t utf8_bytes_filled = 0;
-};
-
-
-template<typename IteratorType, typename Enable = void>
-struct iterator_input_adapter_factory
-{
-    using iterator_type = IteratorType;
-    using char_type = typename std::iterator_traits<iterator_type>::value_type;
-    using adapter_type = iterator_input_adapter<iterator_type>;
-
-    static adapter_type create(IteratorType first, IteratorType last)
-    {
-        return adapter_type(std::move(first), std::move(last));
-    }
-};
-
-template<typename T>
-struct is_iterator_of_multibyte
-{
-    using value_type = typename std::iterator_traits<T>::value_type;
-    enum
-    {
-        value = sizeof(value_type) > 1
-    };
-};
-
-template<typename IteratorType>
-struct iterator_input_adapter_factory<IteratorType, enable_if_t<is_iterator_of_multibyte<IteratorType>::value>>
-{
-    using iterator_type = IteratorType;
-    using char_type = typename std::iterator_traits<iterator_type>::value_type;
-    using base_adapter_type = iterator_input_adapter<iterator_type>;
-    using adapter_type = wide_string_input_adapter<base_adapter_type, char_type>;
-
-    static adapter_type create(IteratorType first, IteratorType last)
-    {
-        return adapter_type(base_adapter_type(std::move(first), std::move(last)));
-    }
-};
-
-// General purpose iterator-based input
-template<typename IteratorType>
-typename iterator_input_adapter_factory<IteratorType>::adapter_type input_adapter(IteratorType first, IteratorType last)
-{
-    using factory_type = iterator_input_adapter_factory<IteratorType>;
-    return factory_type::create(first, last);
-}
-
-// Convenience shorthand from container to iterator
-// Enables ADL on begin(container) and end(container)
-// Encloses the using declarations in namespace for not to leak them to outside scope
-
-namespace container_input_adapter_factory_impl
-{
-
-using std::begin;
-using std::end;
-
-template<typename ContainerType, typename Enable = void>
-struct container_input_adapter_factory {};
-
-template<typename ContainerType>
-struct container_input_adapter_factory< ContainerType,
-       void_t<decltype(begin(std::declval<ContainerType>()), end(std::declval<ContainerType>()))>>
-       {
-           using adapter_type = decltype(input_adapter(begin(std::declval<ContainerType>()), end(std::declval<ContainerType>())));
-
-           static adapter_type create(const ContainerType& container)
-{
-    return input_adapter(begin(container), end(container));
-}
-       };
-
-}  // namespace container_input_adapter_factory_impl
-
-template<typename ContainerType>
-typename container_input_adapter_factory_impl::container_input_adapter_factory<ContainerType>::adapter_type input_adapter(const ContainerType& container)
-{
-    return container_input_adapter_factory_impl::container_input_adapter_factory<ContainerType>::create(container);
-}
-
-#ifndef JSON_NO_IO
-// Special cases with fast paths
-inline file_input_adapter input_adapter(std::FILE* file)
-{
-    return file_input_adapter(file);
-}
-
-inline input_stream_adapter input_adapter(std::istream& stream)
-{
-    return input_stream_adapter(stream);
-}
-
-inline input_stream_adapter input_adapter(std::istream&& stream)
-{
-    return input_stream_adapter(stream);
-}
-#endif  // JSON_NO_IO
-
-using contiguous_bytes_input_adapter = decltype(input_adapter(std::declval<const char*>(), std::declval<const char*>()));
-
-// Null-delimited strings, and the like.
-template < typename CharT,
-           typename std::enable_if <
-               std::is_pointer<CharT>::value&&
-               !std::is_array<CharT>::value&&
-               std::is_integral<typename std::remove_pointer<CharT>::type>::value&&
-               sizeof(typename std::remove_pointer<CharT>::type) == 1,
-               int >::type = 0 >
-contiguous_bytes_input_adapter input_adapter(CharT b)
-{
-    auto length = std::strlen(reinterpret_cast<const char*>(b));
-    const auto* ptr = reinterpret_cast<const char*>(b);
-    return input_adapter(ptr, ptr + length);
-}
-
-template<typename T, std::size_t N>
-auto input_adapter(T (&array)[N]) -> decltype(input_adapter(array, array + N)) // NOLINT(cppcoreguidelines-avoid-c-arrays,hicpp-avoid-c-arrays,modernize-avoid-c-arrays)
-{
-    return input_adapter(array, array + N);
-}
-
-// This class only handles inputs of input_buffer_adapter type.
-// It's required so that expressions like {ptr, len} can be implicitly cast
-// to the correct adapter.
-class span_input_adapter
-{
-  public:
-    template < typename CharT,
-               typename std::enable_if <
-                   std::is_pointer<CharT>::value&&
-                   std::is_integral<typename std::remove_pointer<CharT>::type>::value&&
-                   sizeof(typename std::remove_pointer<CharT>::type) == 1,
-                   int >::type = 0 >
-    span_input_adapter(CharT b, std::size_t l)
-        : ia(reinterpret_cast<const char*>(b), reinterpret_cast<const char*>(b) + l) {}
-
-    template<class IteratorType,
-             typename std::enable_if<
-                 std::is_same<typename iterator_traits<IteratorType>::iterator_category, std::random_access_iterator_tag>::value,
-                 int>::type = 0>
-    span_input_adapter(IteratorType first, IteratorType last)
-        : ia(input_adapter(first, last)) {}
-
-    contiguous_bytes_input_adapter&& get()
-    {
-        return std::move(ia); // NOLINT(hicpp-move-const-arg,performance-move-const-arg)
-    }
-
-  private:
-    contiguous_bytes_input_adapter ia;
-};
-
-}  // namespace detail
-NLOHMANN_JSON_NAMESPACE_END
-
-// #include <nlohmann/detail/input/json_sax.hpp>
-//     __ _____ _____ _____
-//  __|  |   __|     |   | |  JSON for Modern C++
-// |  |  |__   |  |  | | | |  version 3.11.2
-// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
-//
-// SPDX-FileCopyrightText: 2013-2022 Niels Lohmann <https://nlohmann.me>
-// SPDX-License-Identifier: MIT
-
-
-
-#include <cstddef>
-#include <string> // string
-#include <utility> // move
-#include <vector> // vector
-
-// #include <nlohmann/detail/exceptions.hpp>
-
-// #include <nlohmann/detail/macro_scope.hpp>
-
-// #include <nlohmann/detail/string_concat.hpp>
-
-
-NLOHMANN_JSON_NAMESPACE_BEGIN
-
-/*!
-@brief SAX interface
-
-This class describes the SAX interface used by @ref nlohmann::json::sax_parse.
-Each function is called in different situations while the input is parsed. The
-boolean return value informs the parser whether to continue processing the
-input.
-*/
-template<typename BasicJsonType>
-struct json_sax
-{
-    using number_integer_t = typename BasicJsonType::number_integer_t;
-    using number_unsigned_t = typename BasicJsonType::number_unsigned_t;
-    using number_float_t = typename BasicJsonType::number_float_t;
-    using string_t = typename BasicJsonType::string_t;
-    using binary_t = typename BasicJsonType::binary_t;
-
-    /*!
-    @brief a null value was read
-    @return whether parsing should proceed
-    */
-    virtual bool null() = 0;
-
-    /*!
-    @brief a boolean value was read
-    @param[in] val  boolean value
-    @return whether parsing should proceed
-    */
-    virtual bool boolean(bool val) = 0;
-
-    /*!
-    @brief an integer number was read
-    @param[in] val  integer value
-    @return whether parsing should proceed
-    */
-    virtual bool number_integer(number_integer_t val) = 0;
-
-    /*!
-    @brief an unsigned integer number was read
-    @param[in] val  unsigned integer value
-    @return whether parsing should proceed
-    */
-    virtual bool number_unsigned(number_unsigned_t val) = 0;
-
-    /*!
-    @brief a floating-point number was read
-    @param[in] val  floating-point value
-    @param[in] s    raw token value
-    @return whether parsing should proceed
-    */
-    virtual bool number_float(number_float_t val, const string_t& s) = 0;
-
-    /*!
-    @brief a string value was read
-    @param[in] val  string value
-    @return whether parsing should proceed
-    @note It is safe to move the passed string value.
-    */
-    virtual bool string(string_t& val) = 0;
-
-    /*!
-    @brief a binary value was read
-    @param[in] val  binary value
-    @return whether parsing should proceed
-    @note It is safe to move the passed binary value.
-    */
-    virtual bool binary(binary_t& val) = 0;
-
-    /*!
-    @brief the beginning of an object was read
-    @param[in] elements  number of object elements or -1 if unknown
-    @return whether parsing should proceed
-    @note binary formats may report the number of elements
-    */
-    virtual bool start_object(std::size_t elements) = 0;
-
-    /*!
-    @brief an object key was read
-    @param[in] val  object key
-    @return whether parsing should proceed
-    @note It is safe to move the passed string.
-    */
-    virtual bool key(string_t& val) = 0;
-
-    /*!
-    @brief the end of an object was read
-    @return whether parsing should proceed
-    */
-    virtual bool end_object() = 0;
-
-    /*!
-    @brief the beginning of an array was read
-    @param[in] elements  number of array elements or -1 if unknown
-    @return whether parsing should proceed
-    @note binary formats may report the number of elements
-    */
-    virtual bool start_array(std::size_t elements) = 0;
-
-    /*!
-    @brief the end of an array was read
-    @return whether parsing should proceed
-    */
-    virtual bool end_array() = 0;
-
-    /*!
-    @brief a parse error occurred
-    @param[in] position    the position in the input where the error occurs
-    @param[in] last_token  the last read token
-    @param[in] ex          an exception object describing the error
-    @return whether parsing should proceed (must return false)
-    */
-    virtual bool parse_error(std::size_t position,
-                             const std::string& last_token,
-                             const detail::exception& ex) = 0;
-
-    json_sax() = default;
-    json_sax(const json_sax&) = default;
-    json_sax(json_sax&&) noexcept = default;
-    json_sax& operator=(const json_sax&) = default;
-    json_sax& operator=(json_sax&&) noexcept = default;
-    virtual ~json_sax() = default;
-};
-
-
-namespace detail
-{
-/*!
-@brief SAX implementation to create a JSON value from SAX events
-
-This class implements the @ref json_sax interface and processes the SAX events
-to create a JSON value which makes it basically a DOM parser. The structure or
-hierarchy of the JSON value is managed by the stack `ref_stack` which contains
-a pointer to the respective array or object for each recursion depth.
-
-After successful parsing, the value that is passed by reference to the
-constructor contains the parsed value.
-
-@tparam BasicJsonType  the JSON type
-*/
-template<typename BasicJsonType>
-class json_sax_dom_parser
-{
-  public:
-    using number_integer_t = typename BasicJsonType::number_integer_t;
-    using number_unsigned_t = typename BasicJsonType::number_unsigned_t;
-    using number_float_t = typename BasicJsonType::number_float_t;
-    using string_t = typename BasicJsonType::string_t;
-    using binary_t = typename BasicJsonType::binary_t;
-
-    /*!
-    @param[in,out] r  reference to a JSON value that is manipulated while
-                       parsing
-    @param[in] allow_exceptions_  whether parse errors yield exceptions
-    */
-    explicit json_sax_dom_parser(BasicJsonType& r, const bool allow_exceptions_ = true)
-        : root(r), allow_exceptions(allow_exceptions_)
-    {}
-
-    // make class move-only
-    json_sax_dom_parser(const json_sax_dom_parser&) = delete;
-    json_sax_dom_parser(json_sax_dom_parser&&) = default; // NOLINT(hicpp-noexcept-move,performance-noexcept-move-constructor)
-    json_sax_dom_parser& operator=(const json_sax_dom_parser&) = delete;
-    json_sax_dom_parser& operator=(json_sax_dom_parser&&) = default; // NOLINT(hicpp-noexcept-move,performance-noexcept-move-constructor)
-    ~json_sax_dom_parser() = default;
-
-    bool null()
-    {
-        handle_value(nullptr);
-        return true;
-    }
-
-    bool boolean(bool val)
-    {
-        handle_value(val);
-        return true;
-    }
-
-    bool number_integer(number_integer_t val)
-    {
-        handle_value(val);
-        return true;
-    }
-
-    bool number_unsigned(number_unsigned_t val)
-    {
-        handle_value(val);
-        return true;
-    }
-
-    bool number_float(number_float_t val, const string_t& /*unused*/)
-    {
-        handle_value(val);
-        return true;
-    }
-
-    bool string(string_t& val)
-    {
-        handle_value(val);
-        return true;
-    }
-
-    bool binary(binary_t& val)
-    {
-        handle_value(std::move(val));
-        return true;
-    }
-
-    bool start_object(std::size_t len)
-    {
-        ref_stack.push_back(handle_value(BasicJsonType::value_t::object));
-
-        if (JSON_HEDLEY_UNLIKELY(len != static_cast<std::size_t>(-1) && len > ref_stack.back()->max_size()))
-        {
-            JSON_THROW(out_of_range::create(408, concat("excessive object size: ", std::to_string(len)), ref_stack.back()));
-        }
-
-        return true;
-    }
-
-    bool key(string_t& val)
-    {
-        JSON_ASSERT(!ref_stack.empty());
-        JSON_ASSERT(ref_stack.back()->is_object());
-
-        // add null at given key and store the reference for later
-        object_element = &(ref_stack.back()->m_data.m_value.object->operator[](val));
-        return true;
-    }
-
-    bool end_object()
-    {
-        JSON_ASSERT(!ref_stack.empty());
-        JSON_ASSERT(ref_stack.back()->is_object());
-
-        ref_stack.back()->set_parents();
-        ref_stack.pop_back();
-        return true;
-    }
-
-    bool start_array(std::size_t len)
-    {
-        ref_stack.push_back(handle_value(BasicJsonType::value_t::array));
-
-        if (JSON_HEDLEY_UNLIKELY(len != static_cast<std::size_t>(-1) && len > ref_stack.back()->max_size()))
-        {
-            JSON_THROW(out_of_range::create(408, concat("excessive array size: ", std::to_string(len)), ref_stack.back()));
-        }
-
-        return true;
-    }
-
-    bool end_array()
-    {
-        JSON_ASSERT(!ref_stack.empty());
-        JSON_ASSERT(ref_stack.back()->is_array());
-
-        ref_stack.back()->set_parents();
-        ref_stack.pop_back();
-        return true;
-    }
-
-    template<class Exception>
-    bool parse_error(std::size_t /*unused*/, const std::string& /*unused*/,
-                     const Exception& ex)
-    {
-        errored = true;
-        static_cast<void>(ex);
-        if (allow_exceptions)
-        {
-            JSON_THROW(ex);
-        }
-        return false;
-    }
-
-    constexpr bool is_errored() const
-    {
-        return errored;
-    }
-
-  private:
-    /*!
-    @invariant If the ref stack is empty, then the passed value will be the new
-               root.
-    @invariant If the ref stack contains a value, then it is an array or an
-               object to which we can add elements
-    */
-    template<typename Value>
-    JSON_HEDLEY_RETURNS_NON_NULL
-    BasicJsonType* handle_value(Value&& v)
-    {
-        if (ref_stack.empty())
-        {
-            root = BasicJsonType(std::forward<Value>(v));
-            return &root;
-        }
-
-        JSON_ASSERT(ref_stack.back()->is_array() || ref_stack.back()->is_object());
-
-        if (ref_stack.back()->is_array())
-        {
-            ref_stack.back()->m_data.m_value.array->emplace_back(std::forward<Value>(v));
-            return &(ref_stack.back()->m_data.m_value.array->back());
-        }
-
-        JSON_ASSERT(ref_stack.back()->is_object());
-        JSON_ASSERT(object_element);
-        *object_element = BasicJsonType(std::forward<Value>(v));
-        return object_element;
-    }
-
-    /// the parsed JSON value
-    BasicJsonType& root;
-    /// stack to model hierarchy of values
-    std::vector<BasicJsonType*> ref_stack {};
-    /// helper to hold the reference for the next object element
-    BasicJsonType* object_element = nullptr;
-    /// whether a syntax error occurred
-    bool errored = false;
-    /// whether to throw exceptions in case of errors
-    const bool allow_exceptions = true;
-};
-
-template<typename BasicJsonType>
-class json_sax_dom_callback_parser
-{
-  public:
-    using number_integer_t = typename BasicJsonType::number_integer_t;
-    using number_unsigned_t = typename BasicJsonType::number_unsigned_t;
-    using number_float_t = typename BasicJsonType::number_float_t;
-    using string_t = typename BasicJsonType::string_t;
-    using binary_t = typename BasicJsonType::binary_t;
-    using parser_callback_t = typename BasicJsonType::parser_callback_t;
-    using parse_event_t = typename BasicJsonType::parse_event_t;
-
-    json_sax_dom_callback_parser(BasicJsonType& r,
-                                 const parser_callback_t cb,
-                                 const bool allow_exceptions_ = true)
-        : root(r), callback(cb), allow_exceptions(allow_exceptions_)
-    {
-        keep_stack.push_back(true);
-    }
-
-    // make class move-only
-    json_sax_dom_callback_parser(const json_sax_dom_callback_parser&) = delete;
-    json_sax_dom_callback_parser(json_sax_dom_callback_parser&&) = default; // NOLINT(hicpp-noexcept-move,performance-noexcept-move-constructor)
-    json_sax_dom_callback_parser& operator=(const json_sax_dom_callback_parser&) = delete;
-    json_sax_dom_callback_parser& operator=(json_sax_dom_callback_parser&&) = default; // NOLINT(hicpp-noexcept-move,performance-noexcept-move-constructor)
-    ~json_sax_dom_callback_parser() = default;
-
-    bool null()
-    {
-        handle_value(nullptr);
-        return true;
-    }
-
-    bool boolean(bool val)
-    {
-        handle_value(val);
-        return true;
-    }
-
-    bool number_integer(number_integer_t val)
-    {
-        handle_value(val);
-        return true;
-    }
-
-    bool number_unsigned(number_unsigned_t val)
-    {
-        handle_value(val);
-        return true;
-    }
-
-    bool number_float(number_float_t val, const string_t& /*unused*/)
-    {
-        handle_value(val);
-        return true;
-    }
-
-    bool string(string_t& val)
-    {
-        handle_value(val);
-        return true;
-    }
-
-    bool binary(binary_t& val)
-    {
-        handle_value(std::move(val));
-        return true;
-    }
-
-    bool start_object(std::size_t len)
-    {
-        // check callback for object start
-        const bool keep = callback(static_cast<int>(ref_stack.size()), parse_event_t::object_start, discarded);
-        keep_stack.push_back(keep);
-
-        auto val = handle_value(BasicJsonType::value_t::object, true);
-        ref_stack.push_back(val.second);
-
-        // check object limit
-        if (ref_stack.back() && JSON_HEDLEY_UNLIKELY(len != static_cast<std::size_t>(-1) && len > ref_stack.back()->max_size()))
-        {
-            JSON_THROW(out_of_range::create(408, concat("excessive object size: ", std::to_string(len)), ref_stack.back()));
-        }
-
-        return true;
-    }
-
-    bool key(string_t& val)
-    {
-        BasicJsonType k = BasicJsonType(val);
-
-        // check callback for key
-        const bool keep = callback(static_cast<int>(ref_stack.size()), parse_event_t::key, k);
-        key_keep_stack.push_back(keep);
-
-        // add discarded value at given key and store the reference for later
-        if (keep && ref_stack.back())
-        {
-            object_element = &(ref_stack.back()->m_data.m_value.object->operator[](val) = discarded);
-        }
-
-        return true;
-    }
-
-    bool end_object()
-    {
-        if (ref_stack.back())
-        {
-            if (!callback(static_cast<int>(ref_stack.size()) - 1, parse_event_t::object_end, *ref_stack.back()))
-            {
-                // discard object
-                *ref_stack.back() = discarded;
-            }
-            else
-            {
-                ref_stack.back()->set_parents();
-            }
-        }
-
-        JSON_ASSERT(!ref_stack.empty());
-        JSON_ASSERT(!keep_stack.empty());
-        ref_stack.pop_back();
-        keep_stack.pop_back();
-
-        if (!ref_stack.empty() && ref_stack.back() && ref_stack.back()->is_structured())
-        {
-            // remove discarded value
-            for (auto it = ref_stack.back()->begin(); it != ref_stack.back()->end(); ++it)
-            {
-                if (it->is_discarded())
-                {
-                    ref_stack.back()->erase(it);
-                    break;
-                }
-            }
-        }
-
-        return true;
-    }
-
-    bool start_array(std::size_t len)
-    {
-        const bool keep = callback(static_cast<int>(ref_stack.size()), parse_event_t::array_start, discarded);
-        keep_stack.push_back(keep);
-
-        auto val = handle_value(BasicJsonType::value_t::array, true);
-        ref_stack.push_back(val.second);
-
-        // check array limit
-        if (ref_stack.back() && JSON_HEDLEY_UNLIKELY(len != static_cast<std::size_t>(-1) && len > ref_stack.back()->max_size()))
-        {
-            JSON_THROW(out_of_range::create(408, concat("excessive array size: ", std::to_string(len)), ref_stack.back()));
-        }
-
-        return true;
-    }
-
-    bool end_array()
-    {
-        bool keep = true;
-
-        if (ref_stack.back())
-        {
-            keep = callback(static_cast<int>(ref_stack.size()) - 1, parse_event_t::array_end, *ref_stack.back());
-            if (keep)
-            {
-                ref_stack.back()->set_parents();
-            }
-            else
-            {
-                // discard array
-                *ref_stack.back() = discarded;
-            }
-        }
-
-        JSON_ASSERT(!ref_stack.empty());
-        JSON_ASSERT(!keep_stack.empty());
-        ref_stack.pop_back();
-        keep_stack.pop_back();
-
-        // remove discarded value
-        if (!keep && !ref_stack.empty() && ref_stack.back()->is_array())
-        {
-            ref_stack.back()->m_data.m_value.array->pop_back();
-        }
-
-        return true;
-    }
-
-    template<class Exception>
-    bool parse_error(std::size_t /*unused*/, const std::string& /*unused*/,
-                     const Exception& ex)
-    {
-        errored = true;
-        static_cast<void>(ex);
-        if (allow_exceptions)
-        {
-            JSON_THROW(ex);
-        }
-        return false;
-    }
-
-    constexpr bool is_errored() const
-    {
-        return errored;
-    }
-
-  private:
-    /*!
-    @param[in] v  value to add to the JSON value we build during parsing
-    @param[in] skip_callback  whether we should skip calling the callback
-               function; this is required after start_array() and
-               start_object() SAX events, because otherwise we would call the
-               callback function with an empty array or object, respectively.
-
-    @invariant If the ref stack is empty, then the passed value will be the new
-               root.
-    @invariant If the ref stack contains a value, then it is an array or an
-               object to which we can add elements
-
-    @return pair of boolean (whether value should be kept) and pointer (to the
-            passed value in the ref_stack hierarchy; nullptr if not kept)
-    */
-    template<typename Value>
-    std::pair<bool, BasicJsonType*> handle_value(Value&& v, const bool skip_callback = false)
-    {
-        JSON_ASSERT(!keep_stack.empty());
-
-        // do not handle this value if we know it would be added to a discarded
-        // container
-        if (!keep_stack.back())
-        {
-            return {false, nullptr};
-        }
-
-        // create value
-        auto value = BasicJsonType(std::forward<Value>(v));
-
-        // check callback
-        const bool keep = skip_callback || callback(static_cast<int>(ref_stack.size()), parse_event_t::value, value);
-
-        // do not handle this value if we just learnt it shall be discarded
-        if (!keep)
-        {
-            return {false, nullptr};
-        }
-
-        if (ref_stack.empty())
-        {
-            root = std::move(value);
-            return {true, &root};
-        }
-
-        // skip this value if we already decided to skip the parent
-        // (https://github.com/nlohmann/json/issues/971#issuecomment-413678360)
-        if (!ref_stack.back())
-        {
-            return {false, nullptr};
-        }
-
-        // we now only expect arrays and objects
-        JSON_ASSERT(ref_stack.back()->is_array() || ref_stack.back()->is_object());
-
-        // array
-        if (ref_stack.back()->is_array())
-        {
-            ref_stack.back()->m_data.m_value.array->emplace_back(std::move(value));
-            return {true, &(ref_stack.back()->m_data.m_value.array->back())};
-        }
-
-        // object
-        JSON_ASSERT(ref_stack.back()->is_object());
-        // check if we should store an element for the current key
-        JSON_ASSERT(!key_keep_stack.empty());
-        const bool store_element = key_keep_stack.back();
-        key_keep_stack.pop_back();
-
-        if (!store_element)
-        {
-            return {false, nullptr};
-        }
-
-        JSON_ASSERT(object_element);
-        *object_element = std::move(value);
-        return {true, object_element};
-    }
-
-    /// the parsed JSON value
-    BasicJsonType& root;
-    /// stack to model hierarchy of values
-    std::vector<BasicJsonType*> ref_stack {};
-    /// stack to manage which values to keep
-    std::vector<bool> keep_stack {};
-    /// stack to manage which object keys to keep
-    std::vector<bool> key_keep_stack {};
-    /// helper to hold the reference for the next object element
-    BasicJsonType* object_element = nullptr;
-    /// whether a syntax error occurred
-    bool errored = false;
-    /// callback function
-    const parser_callback_t callback = nullptr;
-    /// whether to throw exceptions in case of errors
-    const bool allow_exceptions = true;
-    /// a discarded value for the callback
-    BasicJsonType discarded = BasicJsonType::value_t::discarded;
-};
-
-template<typename BasicJsonType>
-class json_sax_acceptor
-{
-  public:
-    using number_integer_t = typename BasicJsonType::number_integer_t;
-    using number_unsigned_t = typename BasicJsonType::number_unsigned_t;
-    using number_float_t = typename BasicJsonType::number_float_t;
-    using string_t = typename BasicJsonType::string_t;
-    using binary_t = typename BasicJsonType::binary_t;
-
-    bool null()
-    {
-        return true;
-    }
-
-    bool boolean(bool /*unused*/)
-    {
-        return true;
-    }
-
-    bool number_integer(number_integer_t /*unused*/)
-    {
-        return true;
-    }
-
-    bool number_unsigned(number_unsigned_t /*unused*/)
-    {
-        return true;
-    }
-
-    bool number_float(number_float_t /*unused*/, const string_t& /*unused*/)
-    {
-        return true;
-    }
-
-    bool string(string_t& /*unused*/)
-    {
-        return true;
-    }
-
-    bool binary(binary_t& /*unused*/)
-    {
-        return true;
-    }
-
-    bool start_object(std::size_t /*unused*/ = static_cast<std::size_t>(-1))
-    {
-        return true;
-    }
-
-    bool key(string_t& /*unused*/)
-    {
-        return true;
-    }
-
-    bool end_object()
-    {
-        return true;
-    }
-
-    bool start_array(std::size_t /*unused*/ = static_cast<std::size_t>(-1))
-    {
-        return true;
-    }
-
-    bool end_array()
-    {
-        return true;
-    }
-
-    bool parse_error(std::size_t /*unused*/, const std::string& /*unused*/, const detail::exception& /*unused*/)
-    {
-        return false;
-    }
-};
-
-}  // namespace detail
-NLOHMANN_JSON_NAMESPACE_END
-
-// #include <nlohmann/detail/input/lexer.hpp>
-//     __ _____ _____ _____
-//  __|  |   __|     |   | |  JSON for Modern C++
-// |  |  |__   |  |  | | | |  version 3.11.2
-// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
-//
-// SPDX-FileCopyrightText: 2013-2022 Niels Lohmann <https://nlohmann.me>
-// SPDX-License-Identifier: MIT
-
-
-
-#include <array> // array
-#include <clocale> // localeconv
-#include <cstddef> // size_t
-#include <cstdio> // snprintf
-#include <cstdlib> // strtof, strtod, strtold, strtoll, strtoull
-#include <initializer_list> // initializer_list
-#include <string> // char_traits, string
-#include <utility> // move
-#include <vector> // vector
-
-// #include <nlohmann/detail/input/input_adapters.hpp>
-
-// #include <nlohmann/detail/input/position_t.hpp>
-
-// #include <nlohmann/detail/macro_scope.hpp>
-
-
-NLOHMANN_JSON_NAMESPACE_BEGIN
-namespace detail
-{
-
-///////////
-// lexer //
-///////////
-
-template<typename BasicJsonType>
-class lexer_base
-{
-  public:
-    /// token types for the parser
-    enum class token_type
-    {
-        uninitialized,    ///< indicating the scanner is uninitialized
-        literal_true,     ///< the `true` literal
-        literal_false,    ///< the `false` literal
-        literal_null,     ///< the `null` literal
-        value_string,     ///< a string -- use get_string() for actual value
-        value_unsigned,   ///< an unsigned integer -- use get_number_unsigned() for actual value
-        value_integer,    ///< a signed integer -- use get_number_integer() for actual value
-        value_float,      ///< an floating point number -- use get_number_float() for actual value
-        begin_array,      ///< the character for array begin `[`
-        begin_object,     ///< the character for object begin `{`
-        end_array,        ///< the character for array end `]`
-        end_object,       ///< the character for object end `}`
-        name_separator,   ///< the name separator `:`
-        value_separator,  ///< the value separator `,`
-        parse_error,      ///< indicating a parse error
-        end_of_input,     ///< indicating the end of the input buffer
-        literal_or_value  ///< a literal or the begin of a value (only for diagnostics)
-    };
-
-    /// return name of values of type token_type (only used for errors)
-    JSON_HEDLEY_RETURNS_NON_NULL
-    JSON_HEDLEY_CONST
-    static const char* token_type_name(const token_type t) noexcept
-    {
-        switch (t)
-        {
-            case token_type::uninitialized:
-                return "<uninitialized>";
-            case token_type::literal_true:
-                return "true literal";
-            case token_type::literal_false:
-                return "false literal";
-            case token_type::literal_null:
-                return "null literal";
-            case token_type::value_string:
-                return "string literal";
-            case token_type::value_unsigned:
-            case token_type::value_integer:
-            case token_type::value_float:
-                return "number literal";
-            case token_type::begin_array:
-                return "'['";
-            case token_type::begin_object:
-                return "'{'";
-            case token_type::end_array:
-                return "']'";
-            case token_type::end_object:
-                return "'}'";
-            case token_type::name_separator:
-                return "':'";
-            case token_type::value_separator:
-                return "','";
-            case token_type::parse_error:
-                return "<parse error>";
-            case token_type::end_of_input:
-                return "end of input";
-            case token_type::literal_or_value:
-                return "'[', '{', or a literal";
-            // LCOV_EXCL_START
-            default: // catch non-enum values
-                return "unknown token";
-                // LCOV_EXCL_STOP
-        }
-    }
-};
-/*!
-@brief lexical analysis
-
-This class organizes the lexical analysis during JSON deserialization.
-*/
-template<typename BasicJsonType, typename InputAdapterType>
-class lexer : public lexer_base<BasicJsonType>
-{
-    using number_integer_t = typename BasicJsonType::number_integer_t;
-    using number_unsigned_t = typename BasicJsonType::number_unsigned_t;
-    using number_float_t = typename BasicJsonType::number_float_t;
-    using string_t = typename BasicJsonType::string_t;
-    using char_type = typename InputAdapterType::char_type;
-    using char_int_type = typename std::char_traits<char_type>::int_type;
-
-  public:
-    using token_type = typename lexer_base<BasicJsonType>::token_type;
-
-    explicit lexer(InputAdapterType&& adapter, bool ignore_comments_ = false) noexcept
-        : ia(std::move(adapter))
-        , ignore_comments(ignore_comments_)
-        , decimal_point_char(static_cast<char_int_type>(get_decimal_point()))
-    {}
-
-    // delete because of pointer members
-    lexer(const lexer&) = delete;
-    lexer(lexer&&) = default; // NOLINT(hicpp-noexcept-move,performance-noexcept-move-constructor)
-    lexer& operator=(lexer&) = delete;
-    lexer& operator=(lexer&&) = default; // NOLINT(hicpp-noexcept-move,performance-noexcept-move-constructor)
-    ~lexer() = default;
-
-  private:
-    /////////////////////
-    // locales
-    /////////////////////
-
-    /// return the locale-dependent decimal point
-    JSON_HEDLEY_PURE
-    static char get_decimal_point() noexcept
-    {
-        const auto* loc = localeconv();
-        JSON_ASSERT(loc != nullptr);
-        return (loc->decimal_point == nullptr) ? '.' : *(loc->decimal_point);
-    }
-
-    /////////////////////
-    // scan functions
-    /////////////////////
-
-    /*!
-    @brief get codepoint from 4 hex characters following `\u`
-
-    For input "\u c1 c2 c3 c4" the codepoint is:
-      (c1 * 0x1000) + (c2 * 0x0100) + (c3 * 0x0010) + c4
-    = (c1 << 12) + (c2 << 8) + (c3 << 4) + (c4 << 0)
-
-    Furthermore, the possible characters '0'..'9', 'A'..'F', and 'a'..'f'
-    must be converted to the integers 0x0..0x9, 0xA..0xF, 0xA..0xF, resp. The
-    conversion is done by subtracting the offset (0x30, 0x37, and 0x57)
-    between the ASCII value of the character and the desired integer value.
-
-    @return codepoint (0x0000..0xFFFF) or -1 in case of an error (e.g. EOF or
-            non-hex character)
-    */
-    int get_codepoint()
-    {
-        // this function only makes sense after reading `\u`
-        JSON_ASSERT(current == 'u');
-        int codepoint = 0;
-
-        const auto factors = { 12u, 8u, 4u, 0u };
-        for (const auto factor : factors)
-        {
-            get();
-
-            if (current >= '0' && current <= '9')
-            {
-                codepoint += static_cast<int>((static_cast<unsigned int>(current) - 0x30u) << factor);
-            }
-            else if (current >= 'A' && current <= 'F')
-            {
-                codepoint += static_cast<int>((static_cast<unsigned int>(current) - 0x37u) << factor);
-            }
-            else if (current >= 'a' && current <= 'f')
-            {
-                codepoint += static_cast<int>((static_cast<unsigned int>(current) - 0x57u) << factor);
-            }
-            else
-            {
-                return -1;
-            }
-        }
-
-        JSON_ASSERT(0x0000 <= codepoint && codepoint <= 0xFFFF);
-        return codepoint;
-    }
-
-    /*!
-    @brief check if the next byte(s) are inside a given range
-
-    Adds the current byte and, for each passed range, reads a new byte and
-    checks if it is inside the range. If a violation was detected, set up an
-    error message and return false. Otherwise, return true.
-
-    @param[in] ranges  list of integers; interpreted as list of pairs of
-                       inclusive lower and upper bound, respectively
-
-    @pre The passed list @a ranges must have 2, 4, or 6 elements; that is,
-         1, 2, or 3 pairs. This precondition is enforced by an assertion.
-
-    @return true if and only if no range violation was detected
-    */
-    bool next_byte_in_range(std::initializer_list<char_int_type> ranges)
-    {
-        JSON_ASSERT(ranges.size() == 2 || ranges.size() == 4 || ranges.size() == 6);
-        add(current);
-
-        for (auto range = ranges.begin(); range != ranges.end(); ++range)
-        {
-            get();
-            if (JSON_HEDLEY_LIKELY(*range <= current && current <= *(++range)))
-            {
-                add(current);
-            }
-            else
-            {
-                error_message = "invalid string: ill-formed UTF-8 byte";
-                return false;
-            }
-        }
-
-        return true;
-    }
-
-    /*!
-    @brief scan a string literal
-
-    This function scans a string according to Sect. 7 of RFC 8259. While
-    scanning, bytes are escaped and copied into buffer token_buffer. Then the
-    function returns successfully, token_buffer is *not* null-terminated (as it
-    may contain \0 bytes), and token_buffer.size() is the number of bytes in the
-    string.
-
-    @return token_type::value_string if string could be successfully scanned,
-            token_type::parse_error otherwise
-
-    @note In case of errors, variable error_message contains a textual
-          description.
-    */
-    token_type scan_string()
-    {
-        // reset token_buffer (ignore opening quote)
-        reset();
-
-        // we entered the function by reading an open quote
-        JSON_ASSERT(current == '\"');
-
-        while (true)
-        {
-            // get next character
-            switch (get())
-            {
-                // end of file while parsing string
-                case std::char_traits<char_type>::eof():
-                {
-                    error_message = "invalid string: missing closing quote";
-                    return token_type::parse_error;
-                }
-
-                // closing quote
-                case '\"':
-                {
-                    return token_type::value_string;
-                }
-
-                // escapes
-                case '\\':
-                {
-                    switch (get())
-                    {
-                        // quotation mark
-                        case '\"':
-                            add('\"');
-                            break;
-                        // reverse solidus
-                        case '\\':
-                            add('\\');
-                            break;
-                        // solidus
-                        case '/':
-                            add('/');
-                            break;
-                        // backspace
-                        case 'b':
-                            add('\b');
-                            break;
-                        // form feed
-                        case 'f':
-                            add('\f');
-                            break;
-                        // line feed
-                        case 'n':
-                            add('\n');
-                            break;
-                        // carriage return
-                        case 'r':
-                            add('\r');
-                            break;
-                        // tab
-                        case 't':
-                            add('\t');
-                            break;
-
-                        // unicode escapes
-                        case 'u':
-                        {
-                            const int codepoint1 = get_codepoint();
-                            int codepoint = codepoint1; // start with codepoint1
-
-                            if (JSON_HEDLEY_UNLIKELY(codepoint1 == -1))
-                            {
-                                error_message = "invalid string: '\\u' must be followed by 4 hex digits";
-                                return token_type::parse_error;
-                            }
-
-                            // check if code point is a high surrogate
-                            if (0xD800 <= codepoint1 && codepoint1 <= 0xDBFF)
-                            {
-                                // expect next \uxxxx entry
-                                if (JSON_HEDLEY_LIKELY(get() == '\\' && get() == 'u'))
-                                {
-                                    const int codepoint2 = get_codepoint();
-
-                                    if (JSON_HEDLEY_UNLIKELY(codepoint2 == -1))
-                                    {
-                                        error_message = "invalid string: '\\u' must be followed by 4 hex digits";
-                                        return token_type::parse_error;
-                                    }
-
-                                    // check if codepoint2 is a low surrogate
-                                    if (JSON_HEDLEY_LIKELY(0xDC00 <= codepoint2 && codepoint2 <= 0xDFFF))
-                                    {
-                                        // overwrite codepoint
-                                        codepoint = static_cast<int>(
-                                                        // high surrogate occupies the most significant 22 bits
-                                                        (static_cast<unsigned int>(codepoint1) << 10u)
-                                                        // low surrogate occupies the least significant 15 bits
-                                                        + static_cast<unsigned int>(codepoint2)
-                                                        // there is still the 0xD800, 0xDC00 and 0x10000 noise
-                                                        // in the result, so we have to subtract with:
-                                                        // (0xD800 << 10) + DC00 - 0x10000 = 0x35FDC00
-                                                        - 0x35FDC00u);
-                                    }
-                                    else
-                                    {
-                                        error_message = "invalid string: surrogate U+D800..U+DBFF must be followed by U+DC00..U+DFFF";
-                                        return token_type::parse_error;
-                                    }
-                                }
-                                else
-                                {
-                                    error_message = "invalid string: surrogate U+D800..U+DBFF must be followed by U+DC00..U+DFFF";
-                                    return token_type::parse_error;
-                                }
-                            }
-                            else
-                            {
-                                if (JSON_HEDLEY_UNLIKELY(0xDC00 <= codepoint1 && codepoint1 <= 0xDFFF))
-                                {
-                                    error_message = "invalid string: surrogate U+DC00..U+DFFF must follow U+D800..U+DBFF";
-                                    return token_type::parse_error;
-                                }
-                            }
-
-                            // result of the above calculation yields a proper codepoint
-                            JSON_ASSERT(0x00 <= codepoint && codepoint <= 0x10FFFF);
-
-                            // translate codepoint into bytes
-                            if (codepoint < 0x80)
-                            {
-                                // 1-byte characters: 0xxxxxxx (ASCII)
-                                add(static_cast<char_int_type>(codepoint));
-                            }
-                            else if (codepoint <= 0x7FF)
-                            {
-                                // 2-byte characters: 110xxxxx 10xxxxxx
-                                add(static_cast<char_int_type>(0xC0u | (static_cast<unsigned int>(codepoint) >> 6u)));
-                                add(static_cast<char_int_type>(0x80u | (static_cast<unsigned int>(codepoint) & 0x3Fu)));
-                            }
-                            else if (codepoint <= 0xFFFF)
-                            {
-                                // 3-byte characters: 1110xxxx 10xxxxxx 10xxxxxx
-                                add(static_cast<char_int_type>(0xE0u | (static_cast<unsigned int>(codepoint) >> 12u)));
-                                add(static_cast<char_int_type>(0x80u | ((static_cast<unsigned int>(codepoint) >> 6u) & 0x3Fu)));
-                                add(static_cast<char_int_type>(0x80u | (static_cast<unsigned int>(codepoint) & 0x3Fu)));
-                            }
-                            else
-                            {
-                                // 4-byte characters: 11110xxx 10xxxxxx 10xxxxxx 10xxxxxx
-                                add(static_cast<char_int_type>(0xF0u | (static_cast<unsigned int>(codepoint) >> 18u)));
-                                add(static_cast<char_int_type>(0x80u | ((static_cast<unsigned int>(codepoint) >> 12u) & 0x3Fu)));
-                                add(static_cast<char_int_type>(0x80u | ((static_cast<unsigned int>(codepoint) >> 6u) & 0x3Fu)));
-                                add(static_cast<char_int_type>(0x80u | (static_cast<unsigned int>(codepoint) & 0x3Fu)));
-                            }
-
-                            break;
-                        }
-
-                        // other characters after escape
-                        default:
-                            error_message = "invalid string: forbidden character after backslash";
-                            return token_type::parse_error;
-                    }
-
-                    break;
-                }
-
-                // invalid control characters
-                case 0x00:
-                {
-                    error_message = "invalid string: control character U+0000 (NUL) must be escaped to \\u0000";
-                    return token_type::parse_error;
-                }
-
-                case 0x01:
-                {
-                    error_message = "invalid string: control character U+0001 (SOH) must be escaped to \\u0001";
-                    return token_type::parse_error;
-                }
-
-                case 0x02:
-                {
-                    error_message = "invalid string: control character U+0002 (STX) must be escaped to \\u0002";
-                    return token_type::parse_error;
-                }
-
-                case 0x03:
-                {
-                    error_message = "invalid string: control character U+0003 (ETX) must be escaped to \\u0003";
-                    return token_type::parse_error;
-                }
-
-                case 0x04:
-                {
-                    error_message = "invalid string: control character U+0004 (EOT) must be escaped to \\u0004";
-                    return token_type::parse_error;
-                }
-
-                case 0x05:
-                {
-                    error_message = "invalid string: control character U+0005 (ENQ) must be escaped to \\u0005";
-                    return token_type::parse_error;
-                }
-
-                case 0x06:
-                {
-                    error_message = "invalid string: control character U+0006 (ACK) must be escaped to \\u0006";
-                    return token_type::parse_error;
-                }
-
-                case 0x07:
-                {
-                    error_message = "invalid string: control character U+0007 (BEL) must be escaped to \\u0007";
-                    return token_type::parse_error;
-                }
-
-                case 0x08:
-                {
-                    error_message = "invalid string: control character U+0008 (BS) must be escaped to \\u0008 or \\b";
-                    return token_type::parse_error;
-                }
-
-                case 0x09:
-                {
-                    error_message = "invalid string: control character U+0009 (HT) must be escaped to \\u0009 or \\t";
-                    return token_type::parse_error;
-                }
-
-                case 0x0A:
-                {
-                    error_message = "invalid string: control character U+000A (LF) must be escaped to \\u000A or \\n";
-                    return token_type::parse_error;
-                }
-
-                case 0x0B:
-                {
-                    error_message = "invalid string: control character U+000B (VT) must be escaped to \\u000B";
-                    return token_type::parse_error;
-                }
-
-                case 0x0C:
-                {
-                    error_message = "invalid string: control character U+000C (FF) must be escaped to \\u000C or \\f";
-                    return token_type::parse_error;
-                }
-
-                case 0x0D:
-                {
-                    error_message = "invalid string: control character U+000D (CR) must be escaped to \\u000D or \\r";
-                    return token_type::parse_error;
-                }
-
-                case 0x0E:
-                {
-                    error_message = "invalid string: control character U+000E (SO) must be escaped to \\u000E";
-                    return token_type::parse_error;
-                }
-
-                case 0x0F:
-                {
-                    error_message = "invalid string: control character U+000F (SI) must be escaped to \\u000F";
-                    return token_type::parse_error;
-                }
-
-                case 0x10:
-                {
-                    error_message = "invalid string: control character U+0010 (DLE) must be escaped to \\u0010";
-                    return token_type::parse_error;
-                }
-
-                case 0x11:
-                {
-                    error_message = "invalid string: control character U+0011 (DC1) must be escaped to \\u0011";
-                    return token_type::parse_error;
-                }
-
-                case 0x12:
-                {
-                    error_message = "invalid string: control character U+0012 (DC2) must be escaped to \\u0012";
-                    return token_type::parse_error;
-                }
-
-                case 0x13:
-                {
-                    error_message = "invalid string: control character U+0013 (DC3) must be escaped to \\u0013";
-                    return token_type::parse_error;
-                }
-
-                case 0x14:
-                {
-                    error_message = "invalid string: control character U+0014 (DC4) must be escaped to \\u0014";
-                    return token_type::parse_error;
-                }
-
-                case 0x15:
-                {
-                    error_message = "invalid string: control character U+0015 (NAK) must be escaped to \\u0015";
-                    return token_type::parse_error;
-                }
-
-                case 0x16:
-                {
-                    error_message = "invalid string: control character U+0016 (SYN) must be escaped to \\u0016";
-                    return token_type::parse_error;
-                }
-
-                case 0x17:
-                {
-                    error_message = "invalid string: control character U+0017 (ETB) must be escaped to \\u0017";
-                    return token_type::parse_error;
-                }
-
-                case 0x18:
-                {
-                    error_message = "invalid string: control character U+0018 (CAN) must be escaped to \\u0018";
-                    return token_type::parse_error;
-                }
-
-                case 0x19:
-                {
-                    error_message = "invalid string: control character U+0019 (EM) must be escaped to \\u0019";
-                    return token_type::parse_error;
-                }
-
-                case 0x1A:
-                {
-                    error_message = "invalid string: control character U+001A (SUB) must be escaped to \\u001A";
-                    return token_type::parse_error;
-                }
-
-                case 0x1B:
-                {
-                    error_message = "invalid string: control character U+001B (ESC) must be escaped to \\u001B";
-                    return token_type::parse_error;
-                }
-
-                case 0x1C:
-                {
-                    error_message = "invalid string: control character U+001C (FS) must be escaped to \\u001C";
-                    return token_type::parse_error;
-                }
-
-                case 0x1D:
-                {
-                    error_message = "invalid string: control character U+001D (GS) must be escaped to \\u001D";
-                    return token_type::parse_error;
-                }
-
-                case 0x1E:
-                {
-                    error_message = "invalid string: control character U+001E (RS) must be escaped to \\u001E";
-                    return token_type::parse_error;
-                }
-
-                case 0x1F:
-                {
-                    error_message = "invalid string: control character U+001F (US) must be escaped to \\u001F";
-                    return token_type::parse_error;
-                }
-
-                // U+0020..U+007F (except U+0022 (quote) and U+005C (backspace))
-                case 0x20:
-                case 0x21:
-                case 0x23:
-                case 0x24:
-                case 0x25:
-                case 0x26:
-                case 0x27:
-                case 0x28:
-                case 0x29:
-                case 0x2A:
-                case 0x2B:
-                case 0x2C:
-                case 0x2D:
-                case 0x2E:
-                case 0x2F:
-                case 0x30:
-                case 0x31:
-                case 0x32:
-                case 0x33:
-                case 0x34:
-                case 0x35:
-                case 0x36:
-                case 0x37:
-                case 0x38:
-                case 0x39:
-                case 0x3A:
-                case 0x3B:
-                case 0x3C:
-                case 0x3D:
-                case 0x3E:
-                case 0x3F:
-                case 0x40:
-                case 0x41:
-                case 0x42:
-                case 0x43:
-                case 0x44:
-                case 0x45:
-                case 0x46:
-                case 0x47:
-                case 0x48:
-                case 0x49:
-                case 0x4A:
-                case 0x4B:
-                case 0x4C:
-                case 0x4D:
-                case 0x4E:
-                case 0x4F:
-                case 0x50:
-                case 0x51:
-                case 0x52:
-                case 0x53:
-                case 0x54:
-                case 0x55:
-                case 0x56:
-                case 0x57:
-                case 0x58:
-                case 0x59:
-                case 0x5A:
-                case 0x5B:
-                case 0x5D:
-                case 0x5E:
-                case 0x5F:
-                case 0x60:
-                case 0x61:
-                case 0x62:
-                case 0x63:
-                case 0x64:
-                case 0x65:
-                case 0x66:
-                case 0x67:
-                case 0x68:
-                case 0x69:
-                case 0x6A:
-                case 0x6B:
-                case 0x6C:
-                case 0x6D:
-                case 0x6E:
-                case 0x6F:
-                case 0x70:
-                case 0x71:
-                case 0x72:
-                case 0x73:
-                case 0x74:
-                case 0x75:
-                case 0x76:
-                case 0x77:
-                case 0x78:
-                case 0x79:
-                case 0x7A:
-                case 0x7B:
-                case 0x7C:
-                case 0x7D:
-                case 0x7E:
-                case 0x7F:
-                {
-                    add(current);
-                    break;
-                }
-
-                // U+0080..U+07FF: bytes C2..DF 80..BF
-                case 0xC2:
-                case 0xC3:
-                case 0xC4:
-                case 0xC5:
-                case 0xC6:
-                case 0xC7:
-                case 0xC8:
-                case 0xC9:
-                case 0xCA:
-                case 0xCB:
-                case 0xCC:
-                case 0xCD:
-                case 0xCE:
-                case 0xCF:
-                case 0xD0:
-                case 0xD1:
-                case 0xD2:
-                case 0xD3:
-                case 0xD4:
-                case 0xD5:
-                case 0xD6:
-                case 0xD7:
-                case 0xD8:
-                case 0xD9:
-                case 0xDA:
-                case 0xDB:
-                case 0xDC:
-                case 0xDD:
-                case 0xDE:
-                case 0xDF:
-                {
-                    if (JSON_HEDLEY_UNLIKELY(!next_byte_in_range({0x80, 0xBF})))
-                    {
-                        return token_type::parse_error;
-                    }
-                    break;
-                }
-
-                // U+0800..U+0FFF: bytes E0 A0..BF 80..BF
-                case 0xE0:
-                {
-                    if (JSON_HEDLEY_UNLIKELY(!(next_byte_in_range({0xA0, 0xBF, 0x80, 0xBF}))))
-                    {
-                        return token_type::parse_error;
-                    }
-                    break;
-                }
-
-                // U+1000..U+CFFF: bytes E1..EC 80..BF 80..BF
-                // U+E000..U+FFFF: bytes EE..EF 80..BF 80..BF
-                case 0xE1:
-                case 0xE2:
-                case 0xE3:
-                case 0xE4:
-                case 0xE5:
-                case 0xE6:
-                case 0xE7:
-                case 0xE8:
-                case 0xE9:
-                case 0xEA:
-                case 0xEB:
-                case 0xEC:
-                case 0xEE:
-                case 0xEF:
-                {
-                    if (JSON_HEDLEY_UNLIKELY(!(next_byte_in_range({0x80, 0xBF, 0x80, 0xBF}))))
-                    {
-                        return token_type::parse_error;
-                    }
-                    break;
-                }
-
-                // U+D000..U+D7FF: bytes ED 80..9F 80..BF
-                case 0xED:
-                {
-                    if (JSON_HEDLEY_UNLIKELY(!(next_byte_in_range({0x80, 0x9F, 0x80, 0xBF}))))
-                    {
-                        return token_type::parse_error;
-                    }
-                    break;
-                }
-
-                // U+10000..U+3FFFF F0 90..BF 80..BF 80..BF
-                case 0xF0:
-                {
-                    if (JSON_HEDLEY_UNLIKELY(!(next_byte_in_range({0x90, 0xBF, 0x80, 0xBF, 0x80, 0xBF}))))
-                    {
-                        return token_type::parse_error;
-                    }
-                    break;
-                }
-
-                // U+40000..U+FFFFF F1..F3 80..BF 80..BF 80..BF
-                case 0xF1:
-                case 0xF2:
-                case 0xF3:
-                {
-                    if (JSON_HEDLEY_UNLIKELY(!(next_byte_in_range({0x80, 0xBF, 0x80, 0xBF, 0x80, 0xBF}))))
-                    {
-                        return token_type::parse_error;
-                    }
-                    break;
-                }
-
-                // U+100000..U+10FFFF F4 80..8F 80..BF 80..BF
-                case 0xF4:
-                {
-                    if (JSON_HEDLEY_UNLIKELY(!(next_byte_in_range({0x80, 0x8F, 0x80, 0xBF, 0x80, 0xBF}))))
-                    {
-                        return token_type::parse_error;
-                    }
-                    break;
-                }
-
-                // remaining bytes (80..C1 and F5..FF) are ill-formed
-                default:
-                {
-                    error_message = "invalid string: ill-formed UTF-8 byte";
-                    return token_type::parse_error;
-                }
-            }
-        }
-    }
-
-    /*!
-     * @brief scan a comment
-     * @return whether comment could be scanned successfully
-     */
-    bool scan_comment()
-    {
-        switch (get())
-        {
-            // single-line comments skip input until a newline or EOF is read
-            case '/':
-            {
-                while (true)
-                {
-                    switch (get())
-                    {
-                        case '\n':
-                        case '\r':
-                        case std::char_traits<char_type>::eof():
-                        case '\0':
-                            return true;
-
-                        default:
-                            break;
-                    }
-                }
-            }
-
-            // multi-line comments skip input until */ is read
-            case '*':
-            {
-                while (true)
-                {
-                    switch (get())
-                    {
-                        case std::char_traits<char_type>::eof():
-                        case '\0':
-                        {
-                            error_message = "invalid comment; missing closing '*/'";
-                            return false;
-                        }
-
-                        case '*':
-                        {
-                            switch (get())
-                            {
-                                case '/':
-                                    return true;
-
-                                default:
-                                {
-                                    unget();
-                                    continue;
-                                }
-                            }
-                        }
-
-                        default:
-                            continue;
-                    }
-                }
-            }
-
-            // unexpected character after reading '/'
-            default:
-            {
-                error_message = "invalid comment; expecting '/' or '*' after '/'";
-                return false;
-            }
-        }
-    }
-
-    JSON_HEDLEY_NON_NULL(2)
-    static void strtof(float& f, const char* str, char** endptr) noexcept
-    {
-        f = std::strtof(str, endptr);
-    }
-
-    JSON_HEDLEY_NON_NULL(2)
-    static void strtof(double& f, const char* str, char** endptr) noexcept
-    {
-        f = std::strtod(str, endptr);
-    }
-
-    JSON_HEDLEY_NON_NULL(2)
-    static void strtof(long double& f, const char* str, char** endptr) noexcept
-    {
-        f = std::strtold(str, endptr);
-    }
-
-    /*!
-    @brief scan a number literal
-
-    This function scans a string according to Sect. 6 of RFC 8259.
-
-    The function is realized with a deterministic finite state machine derived
-    from the grammar described in RFC 8259. Starting in state "init", the
-    input is read and used to determined the next state. Only state "done"
-    accepts the number. State "error" is a trap state to model errors. In the
-    table below, "anything" means any character but the ones listed before.
-
-    state    | 0        | 1-9      | e E      | +       | -       | .        | anything
-    ---------|----------|----------|----------|---------|---------|----------|-----------
-    init     | zero     | any1     | [error]  | [error] | minus   | [error]  | [error]
-    minus    | zero     | any1     | [error]  | [error] | [error] | [error]  | [error]
-    zero     | done     | done     | exponent | done    | done    | decimal1 | done
-    any1     | any1     | any1     | exponent | done    | done    | decimal1 | done
-    decimal1 | decimal2 | decimal2 | [error]  | [error] | [error] | [error]  | [error]
-    decimal2 | decimal2 | decimal2 | exponent | done    | done    | done     | done
-    exponent | any2     | any2     | [error]  | sign    | sign    | [error]  | [error]
-    sign     | any2     | any2     | [error]  | [error] | [error] | [error]  | [error]
-    any2     | any2     | any2     | done     | done    | done    | done     | done
-
-    The state machine is realized with one label per state (prefixed with
-    "scan_number_") and `goto` statements between them. The state machine
-    contains cycles, but any cycle can be left when EOF is read. Therefore,
-    the function is guaranteed to terminate.
-
-    During scanning, the read bytes are stored in token_buffer. This string is
-    then converted to a signed integer, an unsigned integer, or a
-    floating-point number.
-
-    @return token_type::value_unsigned, token_type::value_integer, or
-            token_type::value_float if number could be successfully scanned,
-            token_type::parse_error otherwise
-
-    @note The scanner is independent of the current locale. Internally, the
-          locale's decimal point is used instead of `.` to work with the
-          locale-dependent converters.
-    */
-    token_type scan_number()  // lgtm [cpp/use-of-goto]
-    {
-        // reset token_buffer to store the number's bytes
-        reset();
-
-        // the type of the parsed number; initially set to unsigned; will be
-        // changed if minus sign, decimal point or exponent is read
-        token_type number_type = token_type::value_unsigned;
-
-        // state (init): we just found out we need to scan a number
-        switch (current)
-        {
-            case '-':
-            {
-                add(current);
-                goto scan_number_minus;
-            }
-
-            case '0':
-            {
-                add(current);
-                goto scan_number_zero;
-            }
-
-            case '1':
-            case '2':
-            case '3':
-            case '4':
-            case '5':
-            case '6':
-            case '7':
-            case '8':
-            case '9':
-            {
-                add(current);
-                goto scan_number_any1;
-            }
-
-            // all other characters are rejected outside scan_number()
-            default:            // LCOV_EXCL_LINE
-                JSON_ASSERT(false); // NOLINT(cert-dcl03-c,hicpp-static-assert,misc-static-assert) LCOV_EXCL_LINE
-        }
-
-scan_number_minus:
-        // state: we just parsed a leading minus sign
-        number_type = token_type::value_integer;
-        switch (get())
-        {
-            case '0':
-            {
-                add(current);
-                goto scan_number_zero;
-            }
-
-            case '1':
-            case '2':
-            case '3':
-            case '4':
-            case '5':
-            case '6':
-            case '7':
-            case '8':
-            case '9':
-            {
-                add(current);
-                goto scan_number_any1;
-            }
-
-            default:
-            {
-                error_message = "invalid number; expected digit after '-'";
-                return token_type::parse_error;
-            }
-        }
-
-scan_number_zero:
-        // state: we just parse a zero (maybe with a leading minus sign)
-        switch (get())
-        {
-            case '.':
-            {
-                add(decimal_point_char);
-                goto scan_number_decimal1;
-            }
-
-            case 'e':
-            case 'E':
-            {
-                add(current);
-                goto scan_number_exponent;
-            }
-
-            default:
-                goto scan_number_done;
-        }
-
-scan_number_any1:
-        // state: we just parsed a number 0-9 (maybe with a leading minus sign)
-        switch (get())
-        {
-            case '0':
-            case '1':
-            case '2':
-            case '3':
-            case '4':
-            case '5':
-            case '6':
-            case '7':
-            case '8':
-            case '9':
-            {
-                add(current);
-                goto scan_number_any1;
-            }
-
-            case '.':
-            {
-                add(decimal_point_char);
-                goto scan_number_decimal1;
-            }
-
-            case 'e':
-            case 'E':
-            {
-                add(current);
-                goto scan_number_exponent;
-            }
-
-            default:
-                goto scan_number_done;
-        }
-
-scan_number_decimal1:
-        // state: we just parsed a decimal point
-        number_type = token_type::value_float;
-        switch (get())
-        {
-            case '0':
-            case '1':
-            case '2':
-            case '3':
-            case '4':
-            case '5':
-            case '6':
-            case '7':
-            case '8':
-            case '9':
-            {
-                add(current);
-                goto scan_number_decimal2;
-            }
-
-            default:
-            {
-                error_message = "invalid number; expected digit after '.'";
-                return token_type::parse_error;
-            }
-        }
-
-scan_number_decimal2:
-        // we just parsed at least one number after a decimal point
-        switch (get())
-        {
-            case '0':
-            case '1':
-            case '2':
-            case '3':
-            case '4':
-            case '5':
-            case '6':
-            case '7':
-            case '8':
-            case '9':
-            {
-                add(current);
-                goto scan_number_decimal2;
-            }
-
-            case 'e':
-            case 'E':
-            {
-                add(current);
-                goto scan_number_exponent;
-            }
-
-            default:
-                goto scan_number_done;
-        }
-
-scan_number_exponent:
-        // we just parsed an exponent
-        number_type = token_type::value_float;
-        switch (get())
-        {
-            case '+':
-            case '-':
-            {
-                add(current);
-                goto scan_number_sign;
-            }
-
-            case '0':
-            case '1':
-            case '2':
-            case '3':
-            case '4':
-            case '5':
-            case '6':
-            case '7':
-            case '8':
-            case '9':
-            {
-                add(current);
-                goto scan_number_any2;
-            }
-
-            default:
-            {
-                error_message =
-                    "invalid number; expected '+', '-', or digit after exponent";
-                return token_type::parse_error;
-            }
-        }
-
-scan_number_sign:
-        // we just parsed an exponent sign
-        switch (get())
-        {
-            case '0':
-            case '1':
-            case '2':
-            case '3':
-            case '4':
-            case '5':
-            case '6':
-            case '7':
-            case '8':
-            case '9':
-            {
-                add(current);
-                goto scan_number_any2;
-            }
-
-            default:
-            {
-                error_message = "invalid number; expected digit after exponent sign";
-                return token_type::parse_error;
-            }
-        }
-
-scan_number_any2:
-        // we just parsed a number after the exponent or exponent sign
-        switch (get())
-        {
-            case '0':
-            case '1':
-            case '2':
-            case '3':
-            case '4':
-            case '5':
-            case '6':
-            case '7':
-            case '8':
-            case '9':
-            {
-                add(current);
-                goto scan_number_any2;
-            }
-
-            default:
-                goto scan_number_done;
-        }
-
-scan_number_done:
-        // unget the character after the number (we only read it to know that
-        // we are done scanning a number)
-        unget();
-
-        char* endptr = nullptr; // NOLINT(cppcoreguidelines-pro-type-vararg,hicpp-vararg)
-        errno = 0;
-
-        // try to parse integers first and fall back to floats
-        if (number_type == token_type::value_unsigned)
-        {
-            const auto x = std::strtoull(token_buffer.data(), &endptr, 10);
-
-            // we checked the number format before
-            JSON_ASSERT(endptr == token_buffer.data() + token_buffer.size());
-
-            if (errno == 0)
-            {
-                value_unsigned = static_cast<number_unsigned_t>(x);
-                if (value_unsigned == x)
-                {
-                    return token_type::value_unsigned;
-                }
-            }
-        }
-        else if (number_type == token_type::value_integer)
-        {
-            const auto x = std::strtoll(token_buffer.data(), &endptr, 10);
-
-            // we checked the number format before
-            JSON_ASSERT(endptr == token_buffer.data() + token_buffer.size());
-
-            if (errno == 0)
-            {
-                value_integer = static_cast<number_integer_t>(x);
-                if (value_integer == x)
-                {
-                    return token_type::value_integer;
-                }
-            }
-        }
-
-        // this code is reached if we parse a floating-point number or if an
-        // integer conversion above failed
-        strtof(value_float, token_buffer.data(), &endptr);
-
-        // we checked the number format before
-        JSON_ASSERT(endptr == token_buffer.data() + token_buffer.size());
-
-        return token_type::value_float;
-    }
-
-    /*!
-    @param[in] literal_text  the literal text to expect
-    @param[in] length        the length of the passed literal text
-    @param[in] return_type   the token type to return on success
-    */
-    JSON_HEDLEY_NON_NULL(2)
-    token_type scan_literal(const char_type* literal_text, const std::size_t length,
-                            token_type return_type)
-    {
-        JSON_ASSERT(std::char_traits<char_type>::to_char_type(current) == literal_text[0]);
-        for (std::size_t i = 1; i < length; ++i)
-        {
-            if (JSON_HEDLEY_UNLIKELY(std::char_traits<char_type>::to_char_type(get()) != literal_text[i]))
-            {
-                error_message = "invalid literal";
-                return token_type::parse_error;
-            }
-        }
-        return return_type;
-    }
-
-    /////////////////////
-    // input management
-    /////////////////////
-
-    /// reset token_buffer; current character is beginning of token
-    void reset() noexcept
-    {
-        token_buffer.clear();
-        token_string.clear();
-        token_string.push_back(std::char_traits<char_type>::to_char_type(current));
-    }
-
-    /*
-    @brief get next character from the input
-
-    This function provides the interface to the used input adapter. It does
-    not throw in case the input reached EOF, but returns a
-    `std::char_traits<char>::eof()` in that case.  Stores the scanned characters
-    for use in error messages.
-
-    @return character read from the input
-    */
-    char_int_type get()
-    {
-        ++position.chars_read_total;
-        ++position.chars_read_current_line;
-
-        if (next_unget)
-        {
-            // just reset the next_unget variable and work with current
-            next_unget = false;
-        }
-        else
-        {
-            current = ia.get_character();
-        }
-
-        if (JSON_HEDLEY_LIKELY(current != std::char_traits<char_type>::eof()))
-        {
-            token_string.push_back(std::char_traits<char_type>::to_char_type(current));
-        }
-
-        if (current == '\n')
-        {
-            ++position.lines_read;
-            position.chars_read_current_line = 0;
-        }
-
-        return current;
-    }
-
-    /*!
-    @brief unget current character (read it again on next get)
-
-    We implement unget by setting variable next_unget to true. The input is not
-    changed - we just simulate ungetting by modifying chars_read_total,
-    chars_read_current_line, and token_string. The next call to get() will
-    behave as if the unget character is read again.
-    */
-    void unget()
-    {
-        next_unget = true;
-
-        --position.chars_read_total;
-
-        // in case we "unget" a newline, we have to also decrement the lines_read
-        if (position.chars_read_current_line == 0)
-        {
-            if (position.lines_read > 0)
-            {
-                --position.lines_read;
-            }
-        }
-        else
-        {
-            --position.chars_read_current_line;
-        }
-
-        if (JSON_HEDLEY_LIKELY(current != std::char_traits<char_type>::eof()))
-        {
-            JSON_ASSERT(!token_string.empty());
-            token_string.pop_back();
-        }
-    }
-
-    /// add a character to token_buffer
-    void add(char_int_type c)
-    {
-        token_buffer.push_back(static_cast<typename string_t::value_type>(c));
-    }
-
-  public:
-    /////////////////////
-    // value getters
-    /////////////////////
-
-    /// return integer value
-    constexpr number_integer_t get_number_integer() const noexcept
-    {
-        return value_integer;
-    }
-
-    /// return unsigned integer value
-    constexpr number_unsigned_t get_number_unsigned() const noexcept
-    {
-        return value_unsigned;
-    }
-
-    /// return floating-point value
-    constexpr number_float_t get_number_float() const noexcept
-    {
-        return value_float;
-    }
-
-    /// return current string value (implicitly resets the token; useful only once)
-    string_t& get_string()
-    {
-        return token_buffer;
-    }
-
-    /////////////////////
-    // diagnostics
-    /////////////////////
-
-    /// return position of last read token
-    constexpr position_t get_position() const noexcept
-    {
-        return position;
-    }
-
-    /// return the last read token (for errors only).  Will never contain EOF
-    /// (an arbitrary value that is not a valid char value, often -1), because
-    /// 255 may legitimately occur.  May contain NUL, which should be escaped.
-    std::string get_token_string() const
-    {
-        // escape control characters
-        std::string result;
-        for (const auto c : token_string)
-        {
-            if (static_cast<unsigned char>(c) <= '\x1F')
-            {
-                // escape control characters
-                std::array<char, 9> cs{{}};
-                static_cast<void>((std::snprintf)(cs.data(), cs.size(), "<U+%.4X>", static_cast<unsigned char>(c))); // NOLINT(cppcoreguidelines-pro-type-vararg,hicpp-vararg)
-                result += cs.data();
-            }
-            else
-            {
-                // add character as is
-                result.push_back(static_cast<std::string::value_type>(c));
-            }
-        }
-
-        return result;
-    }
-
-    /// return syntax error message
-    JSON_HEDLEY_RETURNS_NON_NULL
-    constexpr const char* get_error_message() const noexcept
-    {
-        return error_message;
-    }
-
-    /////////////////////
-    // actual scanner
-    /////////////////////
-
-    /*!
-    @brief skip the UTF-8 byte order mark
-    @return true iff there is no BOM or the correct BOM has been skipped
-    */
-    bool skip_bom()
-    {
-        if (get() == 0xEF)
-        {
-            // check if we completely parse the BOM
-            return get() == 0xBB && get() == 0xBF;
-        }
-
-        // the first character is not the beginning of the BOM; unget it to
-        // process is later
-        unget();
-        return true;
-    }
-
-    void skip_whitespace()
-    {
-        do
-        {
-            get();
-        }
-        while (current == ' ' || current == '\t' || current == '\n' || current == '\r');
-    }
-
-    token_type scan()
-    {
-        // initially, skip the BOM
-        if (position.chars_read_total == 0 && !skip_bom())
-        {
-            error_message = "invalid BOM; must be 0xEF 0xBB 0xBF if given";
-            return token_type::parse_error;
-        }
-
-        // read next character and ignore whitespace
-        skip_whitespace();
-
-        // ignore comments
-        while (ignore_comments && current == '/')
-        {
-            if (!scan_comment())
-            {
-                return token_type::parse_error;
-            }
-
-            // skip following whitespace
-            skip_whitespace();
-        }
-
-        switch (current)
-        {
-            // structural characters
-            case '[':
-                return token_type::begin_array;
-            case ']':
-                return token_type::end_array;
-            case '{':
-                return token_type::begin_object;
-            case '}':
-                return token_type::end_object;
-            case ':':
-                return token_type::name_separator;
-            case ',':
-                return token_type::value_separator;
-
-            // literals
-            case 't':
-            {
-                std::array<char_type, 4> true_literal = {{static_cast<char_type>('t'), static_cast<char_type>('r'), static_cast<char_type>('u'), static_cast<char_type>('e')}};
-                return scan_literal(true_literal.data(), true_literal.size(), token_type::literal_true);
-            }
-            case 'f':
-            {
-                std::array<char_type, 5> false_literal = {{static_cast<char_type>('f'), static_cast<char_type>('a'), static_cast<char_type>('l'), static_cast<char_type>('s'), static_cast<char_type>('e')}};
-                return scan_literal(false_literal.data(), false_literal.size(), token_type::literal_false);
-            }
-            case 'n':
-            {
-                std::array<char_type, 4> null_literal = {{static_cast<char_type>('n'), static_cast<char_type>('u'), static_cast<char_type>('l'), static_cast<char_type>('l')}};
-                return scan_literal(null_literal.data(), null_literal.size(), token_type::literal_null);
-            }
-
-            // string
-            case '\"':
-                return scan_string();
-
-            // number
-            case '-':
-            case '0':
-            case '1':
-            case '2':
-            case '3':
-            case '4':
-            case '5':
-            case '6':
-            case '7':
-            case '8':
-            case '9':
-                return scan_number();
-
-            // end of input (the null byte is needed when parsing from
-            // string literals)
-            case '\0':
-            case std::char_traits<char_type>::eof():
-                return token_type::end_of_input;
-
-            // error
-            default:
-                error_message = "invalid literal";
-                return token_type::parse_error;
-        }
-    }
-
-  private:
-    /// input adapter
-    InputAdapterType ia;
-
-    /// whether comments should be ignored (true) or signaled as errors (false)
-    const bool ignore_comments = false;
-
-    /// the current character
-    char_int_type current = std::char_traits<char_type>::eof();
-
-    /// whether the next get() call should just return current
-    bool next_unget = false;
-
-    /// the start position of the current token
-    position_t position {};
-
-    /// raw input token string (for error messages)
-    std::vector<char_type> token_string {};
-
-    /// buffer for variable-length tokens (numbers, strings)
-    string_t token_buffer {};
-
-    /// a description of occurred lexer errors
-    const char* error_message = "";
-
-    // number values
-    number_integer_t value_integer = 0;
-    number_unsigned_t value_unsigned = 0;
-    number_float_t value_float = 0;
-
-    /// the decimal point
-    const char_int_type decimal_point_char = '.';
-};
-
-}  // namespace detail
-NLOHMANN_JSON_NAMESPACE_END
-
-// #include <nlohmann/detail/macro_scope.hpp>
-
-// #include <nlohmann/detail/meta/is_sax.hpp>
-//     __ _____ _____ _____
-//  __|  |   __|     |   | |  JSON for Modern C++
-// |  |  |__   |  |  | | | |  version 3.11.2
-// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
-//
-// SPDX-FileCopyrightText: 2013-2022 Niels Lohmann <https://nlohmann.me>
-// SPDX-License-Identifier: MIT
-
-
-
-#include <cstdint> // size_t
-#include <utility> // declval
-#include <string> // string
-
-// #include <nlohmann/detail/abi_macros.hpp>
-
-// #include <nlohmann/detail/meta/detected.hpp>
-
-// #include <nlohmann/detail/meta/type_traits.hpp>
-
-
-NLOHMANN_JSON_NAMESPACE_BEGIN
-namespace detail
-{
-
-template<typename T>
-using null_function_t = decltype(std::declval<T&>().null());
-
-template<typename T>
-using boolean_function_t =
-    decltype(std::declval<T&>().boolean(std::declval<bool>()));
-
-template<typename T, typename Integer>
-using number_integer_function_t =
-    decltype(std::declval<T&>().number_integer(std::declval<Integer>()));
-
-template<typename T, typename Unsigned>
-using number_unsigned_function_t =
-    decltype(std::declval<T&>().number_unsigned(std::declval<Unsigned>()));
-
-template<typename T, typename Float, typename String>
-using number_float_function_t = decltype(std::declval<T&>().number_float(
-                                    std::declval<Float>(), std::declval<const String&>()));
-
-template<typename T, typename String>
-using string_function_t =
-    decltype(std::declval<T&>().string(std::declval<String&>()));
-
-template<typename T, typename Binary>
-using binary_function_t =
-    decltype(std::declval<T&>().binary(std::declval<Binary&>()));
-
-template<typename T>
-using start_object_function_t =
-    decltype(std::declval<T&>().start_object(std::declval<std::size_t>()));
-
-template<typename T, typename String>
-using key_function_t =
-    decltype(std::declval<T&>().key(std::declval<String&>()));
-
-template<typename T>
-using end_object_function_t = decltype(std::declval<T&>().end_object());
-
-template<typename T>
-using start_array_function_t =
-    decltype(std::declval<T&>().start_array(std::declval<std::size_t>()));
-
-template<typename T>
-using end_array_function_t = decltype(std::declval<T&>().end_array());
-
-template<typename T, typename Exception>
-using parse_error_function_t = decltype(std::declval<T&>().parse_error(
-        std::declval<std::size_t>(), std::declval<const std::string&>(),
-        std::declval<const Exception&>()));
-
-template<typename SAX, typename BasicJsonType>
-struct is_sax
-{
-  private:
-    static_assert(is_basic_json<BasicJsonType>::value,
-                  "BasicJsonType must be of type basic_json<...>");
-
-    using number_integer_t = typename BasicJsonType::number_integer_t;
-    using number_unsigned_t = typename BasicJsonType::number_unsigned_t;
-    using number_float_t = typename BasicJsonType::number_float_t;
-    using string_t = typename BasicJsonType::string_t;
-    using binary_t = typename BasicJsonType::binary_t;
-    using exception_t = typename BasicJsonType::exception;
-
-  public:
-    static constexpr bool value =
-        is_detected_exact<bool, null_function_t, SAX>::value &&
-        is_detected_exact<bool, boolean_function_t, SAX>::value &&
-        is_detected_exact<bool, number_integer_function_t, SAX, number_integer_t>::value &&
-        is_detected_exact<bool, number_unsigned_function_t, SAX, number_unsigned_t>::value &&
-        is_detected_exact<bool, number_float_function_t, SAX, number_float_t, string_t>::value &&
-        is_detected_exact<bool, string_function_t, SAX, string_t>::value &&
-        is_detected_exact<bool, binary_function_t, SAX, binary_t>::value &&
-        is_detected_exact<bool, start_object_function_t, SAX>::value &&
-        is_detected_exact<bool, key_function_t, SAX, string_t>::value &&
-        is_detected_exact<bool, end_object_function_t, SAX>::value &&
-        is_detected_exact<bool, start_array_function_t, SAX>::value &&
-        is_detected_exact<bool, end_array_function_t, SAX>::value &&
-        is_detected_exact<bool, parse_error_function_t, SAX, exception_t>::value;
-};
-
-template<typename SAX, typename BasicJsonType>
-struct is_sax_static_asserts
-{
-  private:
-    static_assert(is_basic_json<BasicJsonType>::value,
-                  "BasicJsonType must be of type basic_json<...>");
-
-    using number_integer_t = typename BasicJsonType::number_integer_t;
-    using number_unsigned_t = typename BasicJsonType::number_unsigned_t;
-    using number_float_t = typename BasicJsonType::number_float_t;
-    using string_t = typename BasicJsonType::string_t;
-    using binary_t = typename BasicJsonType::binary_t;
-    using exception_t = typename BasicJsonType::exception;
-
-  public:
-    static_assert(is_detected_exact<bool, null_function_t, SAX>::value,
-                  "Missing/invalid function: bool null()");
-    static_assert(is_detected_exact<bool, boolean_function_t, SAX>::value,
-                  "Missing/invalid function: bool boolean(bool)");
-    static_assert(is_detected_exact<bool, boolean_function_t, SAX>::value,
-                  "Missing/invalid function: bool boolean(bool)");
-    static_assert(
-        is_detected_exact<bool, number_integer_function_t, SAX,
-        number_integer_t>::value,
-        "Missing/invalid function: bool number_integer(number_integer_t)");
-    static_assert(
-        is_detected_exact<bool, number_unsigned_function_t, SAX,
-        number_unsigned_t>::value,
-        "Missing/invalid function: bool number_unsigned(number_unsigned_t)");
-    static_assert(is_detected_exact<bool, number_float_function_t, SAX,
-                  number_float_t, string_t>::value,
-                  "Missing/invalid function: bool number_float(number_float_t, const string_t&)");
-    static_assert(
-        is_detected_exact<bool, string_function_t, SAX, string_t>::value,
-        "Missing/invalid function: bool string(string_t&)");
-    static_assert(
-        is_detected_exact<bool, binary_function_t, SAX, binary_t>::value,
-        "Missing/invalid function: bool binary(binary_t&)");
-    static_assert(is_detected_exact<bool, start_object_function_t, SAX>::value,
-                  "Missing/invalid function: bool start_object(std::size_t)");
-    static_assert(is_detected_exact<bool, key_function_t, SAX, string_t>::value,
-                  "Missing/invalid function: bool key(string_t&)");
-    static_assert(is_detected_exact<bool, end_object_function_t, SAX>::value,
-                  "Missing/invalid function: bool end_object()");
-    static_assert(is_detected_exact<bool, start_array_function_t, SAX>::value,
-                  "Missing/invalid function: bool start_array(std::size_t)");
-    static_assert(is_detected_exact<bool, end_array_function_t, SAX>::value,
-                  "Missing/invalid function: bool end_array()");
-    static_assert(
-        is_detected_exact<bool, parse_error_function_t, SAX, exception_t>::value,
-        "Missing/invalid function: bool parse_error(std::size_t, const "
-        "std::string&, const exception&)");
-};
-
-}  // namespace detail
-NLOHMANN_JSON_NAMESPACE_END
-
-// #include <nlohmann/detail/meta/type_traits.hpp>
-
-// #include <nlohmann/detail/string_concat.hpp>
-
-// #include <nlohmann/detail/value_t.hpp>
-
-
-NLOHMANN_JSON_NAMESPACE_BEGIN
-namespace detail
-{
-
-/// how to treat CBOR tags
-enum class cbor_tag_handler_t
-{
-    error,   ///< throw a parse_error exception in case of a tag
-    ignore,  ///< ignore tags
-    store    ///< store tags as binary type
-};
-
-/*!
-@brief determine system byte order
-
-@return true if and only if system's byte order is little endian
-
-@note from https://stackoverflow.com/a/1001328/266378
-*/
-static inline bool little_endianness(int num = 1) noexcept
-{
-    return *reinterpret_cast<char*>(&num) == 1;
-}
-
-
-///////////////////
-// binary reader //
-///////////////////
-
-/*!
-@brief deserialization of CBOR, MessagePack, and UBJSON values
-*/
-template<typename BasicJsonType, typename InputAdapterType, typename SAX = json_sax_dom_parser<BasicJsonType>>
-class binary_reader
-{
-    using number_integer_t = typename BasicJsonType::number_integer_t;
-    using number_unsigned_t = typename BasicJsonType::number_unsigned_t;
-    using number_float_t = typename BasicJsonType::number_float_t;
-    using string_t = typename BasicJsonType::string_t;
-    using binary_t = typename BasicJsonType::binary_t;
-    using json_sax_t = SAX;
-    using char_type = typename InputAdapterType::char_type;
-    using char_int_type = typename std::char_traits<char_type>::int_type;
-
-  public:
-    /*!
-    @brief create a binary reader
-
-    @param[in] adapter  input adapter to read from
-    */
-    explicit binary_reader(InputAdapterType&& adapter, const input_format_t format = input_format_t::json) noexcept : ia(std::move(adapter)), input_format(format)
-    {
-        (void)detail::is_sax_static_asserts<SAX, BasicJsonType> {};
-    }
-
-    // make class move-only
-    binary_reader(const binary_reader&) = delete;
-    binary_reader(binary_reader&&) = default; // NOLINT(hicpp-noexcept-move,performance-noexcept-move-constructor)
-    binary_reader& operator=(const binary_reader&) = delete;
-    binary_reader& operator=(binary_reader&&) = default; // NOLINT(hicpp-noexcept-move,performance-noexcept-move-constructor)
-    ~binary_reader() = default;
-
-    /*!
-    @param[in] format  the binary format to parse
-    @param[in] sax_    a SAX event processor
-    @param[in] strict  whether to expect the input to be consumed completed
-    @param[in] tag_handler  how to treat CBOR tags
-
-    @return whether parsing was successful
-    */
-    JSON_HEDLEY_NON_NULL(3)
-    bool sax_parse(const input_format_t format,
-                   json_sax_t* sax_,
-                   const bool strict = true,
-                   const cbor_tag_handler_t tag_handler = cbor_tag_handler_t::error)
-    {
-        sax = sax_;
-        bool result = false;
-
-        switch (format)
-        {
-            case input_format_t::bson:
-                result = parse_bson_internal();
-                break;
-
-            case input_format_t::cbor:
-                result = parse_cbor_internal(true, tag_handler);
-                break;
-
-            case input_format_t::msgpack:
-                result = parse_msgpack_internal();
-                break;
-
-            case input_format_t::ubjson:
-            case input_format_t::bjdata:
-                result = parse_ubjson_internal();
-                break;
-
-            case input_format_t::json: // LCOV_EXCL_LINE
-            default:            // LCOV_EXCL_LINE
-                JSON_ASSERT(false); // NOLINT(cert-dcl03-c,hicpp-static-assert,misc-static-assert) LCOV_EXCL_LINE
-        }
-
-        // strict mode: next byte must be EOF
-        if (result && strict)
-        {
-            if (input_format == input_format_t::ubjson || input_format == input_format_t::bjdata)
-            {
-                get_ignore_noop();
-            }
-            else
-            {
-                get();
-            }
-
-            if (JSON_HEDLEY_UNLIKELY(current != std::char_traits<char_type>::eof()))
-            {
-                return sax->parse_error(chars_read, get_token_string(), parse_error::create(110, chars_read,
-                                        exception_message(input_format, concat("expected end of input; last byte: 0x", get_token_string()), "value"), nullptr));
-            }
-        }
-
-        return result;
-    }
-
-  private:
-    //////////
-    // BSON //
-    //////////
-
-    /*!
-    @brief Reads in a BSON-object and passes it to the SAX-parser.
-    @return whether a valid BSON-value was passed to the SAX parser
-    */
-    bool parse_bson_internal()
-    {
-        std::int32_t document_size{};
-        get_number<std::int32_t, true>(input_format_t::bson, document_size);
-
-        if (JSON_HEDLEY_UNLIKELY(!sax->start_object(static_cast<std::size_t>(-1))))
-        {
-            return false;
-        }
-
-        if (JSON_HEDLEY_UNLIKELY(!parse_bson_element_list(/*is_array*/false)))
-        {
-            return false;
-        }
-
-        return sax->end_object();
-    }
-
-    /*!
-    @brief Parses a C-style string from the BSON input.
-    @param[in,out] result  A reference to the string variable where the read
-                            string is to be stored.
-    @return `true` if the \x00-byte indicating the end of the string was
-             encountered before the EOF; false` indicates an unexpected EOF.
-    */
-    bool get_bson_cstr(string_t& result)
-    {
-        auto out = std::back_inserter(result);
-        while (true)
-        {
-            get();
-            if (JSON_HEDLEY_UNLIKELY(!unexpect_eof(input_format_t::bson, "cstring")))
-            {
-                return false;
-            }
-            if (current == 0x00)
-            {
-                return true;
-            }
-            *out++ = static_cast<typename string_t::value_type>(current);
-        }
-    }
-
-    /*!
-    @brief Parses a zero-terminated string of length @a len from the BSON
-           input.
-    @param[in] len  The length (including the zero-byte at the end) of the
-                    string to be read.
-    @param[in,out] result  A reference to the string variable where the read
-                            string is to be stored.
-    @tparam NumberType The type of the length @a len
-    @pre len >= 1
-    @return `true` if the string was successfully parsed
-    */
-    template<typename NumberType>
-    bool get_bson_string(const NumberType len, string_t& result)
-    {
-        if (JSON_HEDLEY_UNLIKELY(len < 1))
-        {
-            auto last_token = get_token_string();
-            return sax->parse_error(chars_read, last_token, parse_error::create(112, chars_read,
-                                    exception_message(input_format_t::bson, concat("string length must be at least 1, is ", std::to_string(len)), "string"), nullptr));
-        }
-
-        return get_string(input_format_t::bson, len - static_cast<NumberType>(1), result) && get() != std::char_traits<char_type>::eof();
-    }
-
-    /*!
-    @brief Parses a byte array input of length @a len from the BSON input.
-    @param[in] len  The length of the byte array to be read.
-    @param[in,out] result  A reference to the binary variable where the read
-                            array is to be stored.
-    @tparam NumberType The type of the length @a len
-    @pre len >= 0
-    @return `true` if the byte array was successfully parsed
-    */
-    template<typename NumberType>
-    bool get_bson_binary(const NumberType len, binary_t& result)
-    {
-        if (JSON_HEDLEY_UNLIKELY(len < 0))
-        {
-            auto last_token = get_token_string();
-            return sax->parse_error(chars_read, last_token, parse_error::create(112, chars_read,
-                                    exception_message(input_format_t::bson, concat("byte array length cannot be negative, is ", std::to_string(len)), "binary"), nullptr));
-        }
-
-        // All BSON binary values have a subtype
-        std::uint8_t subtype{};
-        get_number<std::uint8_t>(input_format_t::bson, subtype);
-        result.set_subtype(subtype);
-
-        return get_binary(input_format_t::bson, len, result);
-    }
-
-    /*!
-    @brief Read a BSON document element of the given @a element_type.
-    @param[in] element_type The BSON element type, c.f. http://bsonspec.org/spec.html
-    @param[in] element_type_parse_position The position in the input stream,
-               where the `element_type` was read.
-    @warning Not all BSON element types are supported yet. An unsupported
-             @a element_type will give rise to a parse_error.114:
-             Unsupported BSON record type 0x...
-    @return whether a valid BSON-object/array was passed to the SAX parser
-    */
-    bool parse_bson_element_internal(const char_int_type element_type,
-                                     const std::size_t element_type_parse_position)
-    {
-        switch (element_type)
-        {
-            case 0x01: // double
-            {
-                double number{};
-                return get_number<double, true>(input_format_t::bson, number) && sax->number_float(static_cast<number_float_t>(number), "");
-            }
-
-            case 0x02: // string
-            {
-                std::int32_t len{};
-                string_t value;
-                return get_number<std::int32_t, true>(input_format_t::bson, len) && get_bson_string(len, value) && sax->string(value);
-            }
-
-            case 0x03: // object
-            {
-                return parse_bson_internal();
-            }
-
-            case 0x04: // array
-            {
-                return parse_bson_array();
-            }
-
-            case 0x05: // binary
-            {
-                std::int32_t len{};
-                binary_t value;
-                return get_number<std::int32_t, true>(input_format_t::bson, len) && get_bson_binary(len, value) && sax->binary(value);
-            }
-
-            case 0x08: // boolean
-            {
-                return sax->boolean(get() != 0);
-            }
-
-            case 0x0A: // null
-            {
-                return sax->null();
-            }
-
-            case 0x10: // int32
-            {
-                std::int32_t value{};
-                return get_number<std::int32_t, true>(input_format_t::bson, value) && sax->number_integer(value);
-            }
-
-            case 0x12: // int64
-            {
-                std::int64_t value{};
-                return get_number<std::int64_t, true>(input_format_t::bson, value) && sax->number_integer(value);
-            }
-
-            default: // anything else not supported (yet)
-            {
-                std::array<char, 3> cr{{}};
-                static_cast<void>((std::snprintf)(cr.data(), cr.size(), "%.2hhX", static_cast<unsigned char>(element_type))); // NOLINT(cppcoreguidelines-pro-type-vararg,hicpp-vararg)
-                const std::string cr_str{cr.data()};
-                return sax->parse_error(element_type_parse_position, cr_str,
-                                        parse_error::create(114, element_type_parse_position, concat("Unsupported BSON record type 0x", cr_str), nullptr));
-            }
-        }
-    }
-
-    /*!
-    @brief Read a BSON element list (as specified in the BSON-spec)
-
-    The same binary layout is used for objects and arrays, hence it must be
-    indicated with the argument @a is_array which one is expected
-    (true --> array, false --> object).
-
-    @param[in] is_array Determines if the element list being read is to be
-                        treated as an object (@a is_array == false), or as an
-                        array (@a is_array == true).
-    @return whether a valid BSON-object/array was passed to the SAX parser
-    */
-    bool parse_bson_element_list(const bool is_array)
-    {
-        string_t key;
-
-        while (auto element_type = get())
-        {
-            if (JSON_HEDLEY_UNLIKELY(!unexpect_eof(input_format_t::bson, "element list")))
-            {
-                return false;
-            }
-
-            const std::size_t element_type_parse_position = chars_read;
-            if (JSON_HEDLEY_UNLIKELY(!get_bson_cstr(key)))
-            {
-                return false;
-            }
-
-            if (!is_array && !sax->key(key))
-            {
-                return false;
-            }
-
-            if (JSON_HEDLEY_UNLIKELY(!parse_bson_element_internal(element_type, element_type_parse_position)))
-            {
-                return false;
-            }
-
-            // get_bson_cstr only appends
-            key.clear();
-        }
-
-        return true;
-    }
-
-    /*!
-    @brief Reads an array from the BSON input and passes it to the SAX-parser.
-    @return whether a valid BSON-array was passed to the SAX parser
-    */
-    bool parse_bson_array()
-    {
-        std::int32_t document_size{};
-        get_number<std::int32_t, true>(input_format_t::bson, document_size);
-
-        if (JSON_HEDLEY_UNLIKELY(!sax->start_array(static_cast<std::size_t>(-1))))
-        {
-            return false;
-        }
-
-        if (JSON_HEDLEY_UNLIKELY(!parse_bson_element_list(/*is_array*/true)))
-        {
-            return false;
-        }
-
-        return sax->end_array();
-    }
-
-    //////////
-    // CBOR //
-    //////////
-
-    /*!
-    @param[in] get_char  whether a new character should be retrieved from the
-                         input (true) or whether the last read character should
-                         be considered instead (false)
-    @param[in] tag_handler how CBOR tags should be treated
-
-    @return whether a valid CBOR value was passed to the SAX parser
-    */
-    bool parse_cbor_internal(const bool get_char,
-                             const cbor_tag_handler_t tag_handler)
-    {
-        switch (get_char ? get() : current)
-        {
-            // EOF
-            case std::char_traits<char_type>::eof():
-                return unexpect_eof(input_format_t::cbor, "value");
-
-            // Integer 0x00..0x17 (0..23)
-            case 0x00:
-            case 0x01:
-            case 0x02:
-            case 0x03:
-            case 0x04:
-            case 0x05:
-            case 0x06:
-            case 0x07:
-            case 0x08:
-            case 0x09:
-            case 0x0A:
-            case 0x0B:
-            case 0x0C:
-            case 0x0D:
-            case 0x0E:
-            case 0x0F:
-            case 0x10:
-            case 0x11:
-            case 0x12:
-            case 0x13:
-            case 0x14:
-            case 0x15:
-            case 0x16:
-            case 0x17:
-                return sax->number_unsigned(static_cast<number_unsigned_t>(current));
-
-            case 0x18: // Unsigned integer (one-byte uint8_t follows)
-            {
-                std::uint8_t number{};
-                return get_number(input_format_t::cbor, number) && sax->number_unsigned(number);
-            }
-
-            case 0x19: // Unsigned integer (two-byte uint16_t follows)
-            {
-                std::uint16_t number{};
-                return get_number(input_format_t::cbor, number) && sax->number_unsigned(number);
-            }
-
-            case 0x1A: // Unsigned integer (four-byte uint32_t follows)
-            {
-                std::uint32_t number{};
-                return get_number(input_format_t::cbor, number) && sax->number_unsigned(number);
-            }
-
-            case 0x1B: // Unsigned integer (eight-byte uint64_t follows)
-            {
-                std::uint64_t number{};
-                return get_number(input_format_t::cbor, number) && sax->number_unsigned(number);
-            }
-
-            // Negative integer -1-0x00..-1-0x17 (-1..-24)
-            case 0x20:
-            case 0x21:
-            case 0x22:
-            case 0x23:
-            case 0x24:
-            case 0x25:
-            case 0x26:
-            case 0x27:
-            case 0x28:
-            case 0x29:
-            case 0x2A:
-            case 0x2B:
-            case 0x2C:
-            case 0x2D:
-            case 0x2E:
-            case 0x2F:
-            case 0x30:
-            case 0x31:
-            case 0x32:
-            case 0x33:
-            case 0x34:
-            case 0x35:
-            case 0x36:
-            case 0x37:
-                return sax->number_integer(static_cast<std::int8_t>(0x20 - 1 - current));
-
-            case 0x38: // Negative integer (one-byte uint8_t follows)
-            {
-                std::uint8_t number{};
-                return get_number(input_format_t::cbor, number) && sax->number_integer(static_cast<number_integer_t>(-1) - number);
-            }
-
-            case 0x39: // Negative integer -1-n (two-byte uint16_t follows)
-            {
-                std::uint16_t number{};
-                return get_number(input_format_t::cbor, number) && sax->number_integer(static_cast<number_integer_t>(-1) - number);
-            }
-
-            case 0x3A: // Negative integer -1-n (four-byte uint32_t follows)
-            {
-                std::uint32_t number{};
-                return get_number(input_format_t::cbor, number) && sax->number_integer(static_cast<number_integer_t>(-1) - number);
-            }
-
-            case 0x3B: // Negative integer -1-n (eight-byte uint64_t follows)
-            {
-                std::uint64_t number{};
-                return get_number(input_format_t::cbor, number) && sax->number_integer(static_cast<number_integer_t>(-1)
-                        - static_cast<number_integer_t>(number));
-            }
-
-            // Binary data (0x00..0x17 bytes follow)
-            case 0x40:
-            case 0x41:
-            case 0x42:
-            case 0x43:
-            case 0x44:
-            case 0x45:
-            case 0x46:
-            case 0x47:
-            case 0x48:
-            case 0x49:
-            case 0x4A:
-            case 0x4B:
-            case 0x4C:
-            case 0x4D:
-            case 0x4E:
-            case 0x4F:
-            case 0x50:
-            case 0x51:
-            case 0x52:
-            case 0x53:
-            case 0x54:
-            case 0x55:
-            case 0x56:
-            case 0x57:
-            case 0x58: // Binary data (one-byte uint8_t for n follows)
-            case 0x59: // Binary data (two-byte uint16_t for n follow)
-            case 0x5A: // Binary data (four-byte uint32_t for n follow)
-            case 0x5B: // Binary data (eight-byte uint64_t for n follow)
-            case 0x5F: // Binary data (indefinite length)
-            {
-                binary_t b;
-                return get_cbor_binary(b) && sax->binary(b);
-            }
-
-            // UTF-8 string (0x00..0x17 bytes follow)
-            case 0x60:
-            case 0x61:
-            case 0x62:
-            case 0x63:
-            case 0x64:
-            case 0x65:
-            case 0x66:
-            case 0x67:
-            case 0x68:
-            case 0x69:
-            case 0x6A:
-            case 0x6B:
-            case 0x6C:
-            case 0x6D:
-            case 0x6E:
-            case 0x6F:
-            case 0x70:
-            case 0x71:
-            case 0x72:
-            case 0x73:
-            case 0x74:
-            case 0x75:
-            case 0x76:
-            case 0x77:
-            case 0x78: // UTF-8 string (one-byte uint8_t for n follows)
-            case 0x79: // UTF-8 string (two-byte uint16_t for n follow)
-            case 0x7A: // UTF-8 string (four-byte uint32_t for n follow)
-            case 0x7B: // UTF-8 string (eight-byte uint64_t for n follow)
-            case 0x7F: // UTF-8 string (indefinite length)
-            {
-                string_t s;
-                return get_cbor_string(s) && sax->string(s);
-            }
-
-            // array (0x00..0x17 data items follow)
-            case 0x80:
-            case 0x81:
-            case 0x82:
-            case 0x83:
-            case 0x84:
-            case 0x85:
-            case 0x86:
-            case 0x87:
-            case 0x88:
-            case 0x89:
-            case 0x8A:
-            case 0x8B:
-            case 0x8C:
-            case 0x8D:
-            case 0x8E:
-            case 0x8F:
-            case 0x90:
-            case 0x91:
-            case 0x92:
-            case 0x93:
-            case 0x94:
-            case 0x95:
-            case 0x96:
-            case 0x97:
-                return get_cbor_array(
-                           conditional_static_cast<std::size_t>(static_cast<unsigned int>(current) & 0x1Fu), tag_handler);
-
-            case 0x98: // array (one-byte uint8_t for n follows)
-            {
-                std::uint8_t len{};
-                return get_number(input_format_t::cbor, len) && get_cbor_array(static_cast<std::size_t>(len), tag_handler);
-            }
-
-            case 0x99: // array (two-byte uint16_t for n follow)
-            {
-                std::uint16_t len{};
-                return get_number(input_format_t::cbor, len) && get_cbor_array(static_cast<std::size_t>(len), tag_handler);
-            }
-
-            case 0x9A: // array (four-byte uint32_t for n follow)
-            {
-                std::uint32_t len{};
-                return get_number(input_format_t::cbor, len) && get_cbor_array(conditional_static_cast<std::size_t>(len), tag_handler);
-            }
-
-            case 0x9B: // array (eight-byte uint64_t for n follow)
-            {
-                std::uint64_t len{};
-                return get_number(input_format_t::cbor, len) && get_cbor_array(conditional_static_cast<std::size_t>(len), tag_handler);
-            }
-
-            case 0x9F: // array (indefinite length)
-                return get_cbor_array(static_cast<std::size_t>(-1), tag_handler);
-
-            // map (0x00..0x17 pairs of data items follow)
-            case 0xA0:
-            case 0xA1:
-            case 0xA2:
-            case 0xA3:
-            case 0xA4:
-            case 0xA5:
-            case 0xA6:
-            case 0xA7:
-            case 0xA8:
-            case 0xA9:
-            case 0xAA:
-            case 0xAB:
-            case 0xAC:
-            case 0xAD:
-            case 0xAE:
-            case 0xAF:
-            case 0xB0:
-            case 0xB1:
-            case 0xB2:
-            case 0xB3:
-            case 0xB4:
-            case 0xB5:
-            case 0xB6:
-            case 0xB7:
-                return get_cbor_object(conditional_static_cast<std::size_t>(static_cast<unsigned int>(current) & 0x1Fu), tag_handler);
-
-            case 0xB8: // map (one-byte uint8_t for n follows)
-            {
-                std::uint8_t len{};
-                return get_number(input_format_t::cbor, len) && get_cbor_object(static_cast<std::size_t>(len), tag_handler);
-            }
-
-            case 0xB9: // map (two-byte uint16_t for n follow)
-            {
-                std::uint16_t len{};
-                return get_number(input_format_t::cbor, len) && get_cbor_object(static_cast<std::size_t>(len), tag_handler);
-            }
-
-            case 0xBA: // map (four-byte uint32_t for n follow)
-            {
-                std::uint32_t len{};
-                return get_number(input_format_t::cbor, len) && get_cbor_object(conditional_static_cast<std::size_t>(len), tag_handler);
-            }
-
-            case 0xBB: // map (eight-byte uint64_t for n follow)
-            {
-                std::uint64_t len{};
-                return get_number(input_format_t::cbor, len) && get_cbor_object(conditional_static_cast<std::size_t>(len), tag_handler);
-            }
-
-            case 0xBF: // map (indefinite length)
-                return get_cbor_object(static_cast<std::size_t>(-1), tag_handler);
-
-            case 0xC6: // tagged item
-            case 0xC7:
-            case 0xC8:
-            case 0xC9:
-            case 0xCA:
-            case 0xCB:
-            case 0xCC:
-            case 0xCD:
-            case 0xCE:
-            case 0xCF:
-            case 0xD0:
-            case 0xD1:
-            case 0xD2:
-            case 0xD3:
-            case 0xD4:
-            case 0xD8: // tagged item (1 bytes follow)
-            case 0xD9: // tagged item (2 bytes follow)
-            case 0xDA: // tagged item (4 bytes follow)
-            case 0xDB: // tagged item (8 bytes follow)
-            {
-                switch (tag_handler)
-                {
-                    case cbor_tag_handler_t::error:
-                    {
-                        auto last_token = get_token_string();
-                        return sax->parse_error(chars_read, last_token, parse_error::create(112, chars_read,
-                                                exception_message(input_format_t::cbor, concat("invalid byte: 0x", last_token), "value"), nullptr));
-                    }
-
-                    case cbor_tag_handler_t::ignore:
-                    {
-                        // ignore binary subtype
-                        switch (current)
-                        {
-                            case 0xD8:
-                            {
-                                std::uint8_t subtype_to_ignore{};
-                                get_number(input_format_t::cbor, subtype_to_ignore);
-                                break;
-                            }
-                            case 0xD9:
-                            {
-                                std::uint16_t subtype_to_ignore{};
-                                get_number(input_format_t::cbor, subtype_to_ignore);
-                                break;
-                            }
-                            case 0xDA:
-                            {
-                                std::uint32_t subtype_to_ignore{};
-                                get_number(input_format_t::cbor, subtype_to_ignore);
-                                break;
-                            }
-                            case 0xDB:
-                            {
-                                std::uint64_t subtype_to_ignore{};
-                                get_number(input_format_t::cbor, subtype_to_ignore);
-                                break;
-                            }
-                            default:
-                                break;
-                        }
-                        return parse_cbor_internal(true, tag_handler);
-                    }
-
-                    case cbor_tag_handler_t::store:
-                    {
-                        binary_t b;
-                        // use binary subtype and store in binary container
-                        switch (current)
-                        {
-                            case 0xD8:
-                            {
-                                std::uint8_t subtype{};
-                                get_number(input_format_t::cbor, subtype);
-                                b.set_subtype(detail::conditional_static_cast<typename binary_t::subtype_type>(subtype));
-                                break;
-                            }
-                            case 0xD9:
-                            {
-                                std::uint16_t subtype{};
-                                get_number(input_format_t::cbor, subtype);
-                                b.set_subtype(detail::conditional_static_cast<typename binary_t::subtype_type>(subtype));
-                                break;
-                            }
-                            case 0xDA:
-                            {
-                                std::uint32_t subtype{};
-                                get_number(input_format_t::cbor, subtype);
-                                b.set_subtype(detail::conditional_static_cast<typename binary_t::subtype_type>(subtype));
-                                break;
-                            }
-                            case 0xDB:
-                            {
-                                std::uint64_t subtype{};
-                                get_number(input_format_t::cbor, subtype);
-                                b.set_subtype(detail::conditional_static_cast<typename binary_t::subtype_type>(subtype));
-                                break;
-                            }
-                            default:
-                                return parse_cbor_internal(true, tag_handler);
-                        }
-                        get();
-                        return get_cbor_binary(b) && sax->binary(b);
-                    }
-
-                    default:                 // LCOV_EXCL_LINE
-                        JSON_ASSERT(false); // NOLINT(cert-dcl03-c,hicpp-static-assert,misc-static-assert) LCOV_EXCL_LINE
-                        return false;        // LCOV_EXCL_LINE
-                }
-            }
-
-            case 0xF4: // false
-                return sax->boolean(false);
-
-            case 0xF5: // true
-                return sax->boolean(true);
-
-            case 0xF6: // null
-                return sax->null();
-
-            case 0xF9: // Half-Precision Float (two-byte IEEE 754)
-            {
-                const auto byte1_raw = get();
-                if (JSON_HEDLEY_UNLIKELY(!unexpect_eof(input_format_t::cbor, "number")))
-                {
-                    return false;
-                }
-                const auto byte2_raw = get();
-                if (JSON_HEDLEY_UNLIKELY(!unexpect_eof(input_format_t::cbor, "number")))
-                {
-                    return false;
-                }
-
-                const auto byte1 = static_cast<unsigned char>(byte1_raw);
-                const auto byte2 = static_cast<unsigned char>(byte2_raw);
-
-                // code from RFC 7049, Appendix D, Figure 3:
-                // As half-precision floating-point numbers were only added
-                // to IEEE 754 in 2008, today's programming platforms often
-                // still only have limited support for them. It is very
-                // easy to include at least decoding support for them even
-                // without such support. An example of a small decoder for
-                // half-precision floating-point numbers in the C language
-                // is shown in Fig. 3.
-                const auto half = static_cast<unsigned int>((byte1 << 8u) + byte2);
-                const double val = [&half]
-                {
-                    const int exp = (half >> 10u) & 0x1Fu;
-                    const unsigned int mant = half & 0x3FFu;
-                    JSON_ASSERT(0 <= exp&& exp <= 32);
-                    JSON_ASSERT(mant <= 1024);
-                    switch (exp)
-                    {
-                        case 0:
-                            return std::ldexp(mant, -24);
-                        case 31:
-                            return (mant == 0)
-                            ? std::numeric_limits<double>::infinity()
-                            : std::numeric_limits<double>::quiet_NaN();
-                        default:
-                            return std::ldexp(mant + 1024, exp - 25);
-                    }
-                }();
-                return sax->number_float((half & 0x8000u) != 0
-                                         ? static_cast<number_float_t>(-val)
-                                         : static_cast<number_float_t>(val), "");
-            }
-
-            case 0xFA: // Single-Precision Float (four-byte IEEE 754)
-            {
-                float number{};
-                return get_number(input_format_t::cbor, number) && sax->number_float(static_cast<number_float_t>(number), "");
-            }
-
-            case 0xFB: // Double-Precision Float (eight-byte IEEE 754)
-            {
-                double number{};
-                return get_number(input_format_t::cbor, number) && sax->number_float(static_cast<number_float_t>(number), "");
-            }
-
-            default: // anything else (0xFF is handled inside the other types)
-            {
-                auto last_token = get_token_string();
-                return sax->parse_error(chars_read, last_token, parse_error::create(112, chars_read,
-                                        exception_message(input_format_t::cbor, concat("invalid byte: 0x", last_token), "value"), nullptr));
-            }
-        }
-    }
-
-    /*!
-    @brief reads a CBOR string
-
-    This function first reads starting bytes to determine the expected
-    string length and then copies this number of bytes into a string.
-    Additionally, CBOR's strings with indefinite lengths are supported.
-
-    @param[out] result  created string
-
-    @return whether string creation completed
-    */
-    bool get_cbor_string(string_t& result)
-    {
-        if (JSON_HEDLEY_UNLIKELY(!unexpect_eof(input_format_t::cbor, "string")))
-        {
-            return false;
-        }
-
-        switch (current)
-        {
-            // UTF-8 string (0x00..0x17 bytes follow)
-            case 0x60:
-            case 0x61:
-            case 0x62:
-            case 0x63:
-            case 0x64:
-            case 0x65:
-            case 0x66:
-            case 0x67:
-            case 0x68:
-            case 0x69:
-            case 0x6A:
-            case 0x6B:
-            case 0x6C:
-            case 0x6D:
-            case 0x6E:
-            case 0x6F:
-            case 0x70:
-            case 0x71:
-            case 0x72:
-            case 0x73:
-            case 0x74:
-            case 0x75:
-            case 0x76:
-            case 0x77:
-            {
-                return get_string(input_format_t::cbor, static_cast<unsigned int>(current) & 0x1Fu, result);
-            }
-
-            case 0x78: // UTF-8 string (one-byte uint8_t for n follows)
-            {
-                std::uint8_t len{};
-                return get_number(input_format_t::cbor, len) && get_string(input_format_t::cbor, len, result);
-            }
-
-            case 0x79: // UTF-8 string (two-byte uint16_t for n follow)
-            {
-                std::uint16_t len{};
-                return get_number(input_format_t::cbor, len) && get_string(input_format_t::cbor, len, result);
-            }
-
-            case 0x7A: // UTF-8 string (four-byte uint32_t for n follow)
-            {
-                std::uint32_t len{};
-                return get_number(input_format_t::cbor, len) && get_string(input_format_t::cbor, len, result);
-            }
-
-            case 0x7B: // UTF-8 string (eight-byte uint64_t for n follow)
-            {
-                std::uint64_t len{};
-                return get_number(input_format_t::cbor, len) && get_string(input_format_t::cbor, len, result);
-            }
-
-            case 0x7F: // UTF-8 string (indefinite length)
-            {
-                while (get() != 0xFF)
-                {
-                    string_t chunk;
-                    if (!get_cbor_string(chunk))
-                    {
-                        return false;
-                    }
-                    result.append(chunk);
-                }
-                return true;
-            }
-
-            default:
-            {
-                auto last_token = get_token_string();
-                return sax->parse_error(chars_read, last_token, parse_error::create(113, chars_read,
-                                        exception_message(input_format_t::cbor, concat("expected length specification (0x60-0x7B) or indefinite string type (0x7F); last byte: 0x", last_token), "string"), nullptr));
-            }
-        }
-    }
-
-    /*!
-    @brief reads a CBOR byte array
-
-    This function first reads starting bytes to determine the expected
-    byte array length and then copies this number of bytes into the byte array.
-    Additionally, CBOR's byte arrays with indefinite lengths are supported.
-
-    @param[out] result  created byte array
-
-    @return whether byte array creation completed
-    */
-    bool get_cbor_binary(binary_t& result)
-    {
-        if (JSON_HEDLEY_UNLIKELY(!unexpect_eof(input_format_t::cbor, "binary")))
-        {
-            return false;
-        }
-
-        switch (current)
-        {
-            // Binary data (0x00..0x17 bytes follow)
-            case 0x40:
-            case 0x41:
-            case 0x42:
-            case 0x43:
-            case 0x44:
-            case 0x45:
-            case 0x46:
-            case 0x47:
-            case 0x48:
-            case 0x49:
-            case 0x4A:
-            case 0x4B:
-            case 0x4C:
-            case 0x4D:
-            case 0x4E:
-            case 0x4F:
-            case 0x50:
-            case 0x51:
-            case 0x52:
-            case 0x53:
-            case 0x54:
-            case 0x55:
-            case 0x56:
-            case 0x57:
-            {
-                return get_binary(input_format_t::cbor, static_cast<unsigned int>(current) & 0x1Fu, result);
-            }
-
-            case 0x58: // Binary data (one-byte uint8_t for n follows)
-            {
-                std::uint8_t len{};
-                return get_number(input_format_t::cbor, len) &&
-                       get_binary(input_format_t::cbor, len, result);
-            }
-
-            case 0x59: // Binary data (two-byte uint16_t for n follow)
-            {
-                std::uint16_t len{};
-                return get_number(input_format_t::cbor, len) &&
-                       get_binary(input_format_t::cbor, len, result);
-            }
-
-            case 0x5A: // Binary data (four-byte uint32_t for n follow)
-            {
-                std::uint32_t len{};
-                return get_number(input_format_t::cbor, len) &&
-                       get_binary(input_format_t::cbor, len, result);
-            }
-
-            case 0x5B: // Binary data (eight-byte uint64_t for n follow)
-            {
-                std::uint64_t len{};
-                return get_number(input_format_t::cbor, len) &&
-                       get_binary(input_format_t::cbor, len, result);
-            }
-
-            case 0x5F: // Binary data (indefinite length)
-            {
-                while (get() != 0xFF)
-                {
-                    binary_t chunk;
-                    if (!get_cbor_binary(chunk))
-                    {
-                        return false;
-                    }
-                    result.insert(result.end(), chunk.begin(), chunk.end());
-                }
-                return true;
-            }
-
-            default:
-            {
-                auto last_token = get_token_string();
-                return sax->parse_error(chars_read, last_token, parse_error::create(113, chars_read,
-                                        exception_message(input_format_t::cbor, concat("expected length specification (0x40-0x5B) or indefinite binary array type (0x5F); last byte: 0x", last_token), "binary"), nullptr));
-            }
-        }
-    }
-
-    /*!
-    @param[in] len  the length of the array or static_cast<std::size_t>(-1) for an
-                    array of indefinite size
-    @param[in] tag_handler how CBOR tags should be treated
-    @return whether array creation completed
-    */
-    bool get_cbor_array(const std::size_t len,
-                        const cbor_tag_handler_t tag_handler)
-    {
-        if (JSON_HEDLEY_UNLIKELY(!sax->start_array(len)))
-        {
-            return false;
-        }
-
-        if (len != static_cast<std::size_t>(-1))
-        {
-            for (std::size_t i = 0; i < len; ++i)
-            {
-                if (JSON_HEDLEY_UNLIKELY(!parse_cbor_internal(true, tag_handler)))
-                {
-                    return false;
-                }
-            }
-        }
-        else
-        {
-            while (get() != 0xFF)
-            {
-                if (JSON_HEDLEY_UNLIKELY(!parse_cbor_internal(false, tag_handler)))
-                {
-                    return false;
-                }
-            }
-        }
-
-        return sax->end_array();
-    }
-
-    /*!
-    @param[in] len  the length of the object or static_cast<std::size_t>(-1) for an
-                    object of indefinite size
-    @param[in] tag_handler how CBOR tags should be treated
-    @return whether object creation completed
-    */
-    bool get_cbor_object(const std::size_t len,
-                         const cbor_tag_handler_t tag_handler)
-    {
-        if (JSON_HEDLEY_UNLIKELY(!sax->start_object(len)))
-        {
-            return false;
-        }
-
-        if (len != 0)
-        {
-            string_t key;
-            if (len != static_cast<std::size_t>(-1))
-            {
-                for (std::size_t i = 0; i < len; ++i)
-                {
-                    get();
-                    if (JSON_HEDLEY_UNLIKELY(!get_cbor_string(key) || !sax->key(key)))
-                    {
-                        return false;
-                    }
-
-                    if (JSON_HEDLEY_UNLIKELY(!parse_cbor_internal(true, tag_handler)))
-                    {
-                        return false;
-                    }
-                    key.clear();
-                }
-            }
-            else
-            {
-                while (get() != 0xFF)
-                {
-                    if (JSON_HEDLEY_UNLIKELY(!get_cbor_string(key) || !sax->key(key)))
-                    {
-                        return false;
-                    }
-
-                    if (JSON_HEDLEY_UNLIKELY(!parse_cbor_internal(true, tag_handler)))
-                    {
-                        return false;
-                    }
-                    key.clear();
-                }
-            }
-        }
-
-        return sax->end_object();
-    }
-
-    /////////////
-    // MsgPack //
-    /////////////
-
-    /*!
-    @return whether a valid MessagePack value was passed to the SAX parser
-    */
-    bool parse_msgpack_internal()
-    {
-        switch (get())
-        {
-            // EOF
-            case std::char_traits<char_type>::eof():
-                return unexpect_eof(input_format_t::msgpack, "value");
-
-            // positive fixint
-            case 0x00:
-            case 0x01:
-            case 0x02:
-            case 0x03:
-            case 0x04:
-            case 0x05:
-            case 0x06:
-            case 0x07:
-            case 0x08:
-            case 0x09:
-            case 0x0A:
-            case 0x0B:
-            case 0x0C:
-            case 0x0D:
-            case 0x0E:
-            case 0x0F:
-            case 0x10:
-            case 0x11:
-            case 0x12:
-            case 0x13:
-            case 0x14:
-            case 0x15:
-            case 0x16:
-            case 0x17:
-            case 0x18:
-            case 0x19:
-            case 0x1A:
-            case 0x1B:
-            case 0x1C:
-            case 0x1D:
-            case 0x1E:
-            case 0x1F:
-            case 0x20:
-            case 0x21:
-            case 0x22:
-            case 0x23:
-            case 0x24:
-            case 0x25:
-            case 0x26:
-            case 0x27:
-            case 0x28:
-            case 0x29:
-            case 0x2A:
-            case 0x2B:
-            case 0x2C:
-            case 0x2D:
-            case 0x2E:
-            case 0x2F:
-            case 0x30:
-            case 0x31:
-            case 0x32:
-            case 0x33:
-            case 0x34:
-            case 0x35:
-            case 0x36:
-            case 0x37:
-            case 0x38:
-            case 0x39:
-            case 0x3A:
-            case 0x3B:
-            case 0x3C:
-            case 0x3D:
-            case 0x3E:
-            case 0x3F:
-            case 0x40:
-            case 0x41:
-            case 0x42:
-            case 0x43:
-            case 0x44:
-            case 0x45:
-            case 0x46:
-            case 0x47:
-            case 0x48:
-            case 0x49:
-            case 0x4A:
-            case 0x4B:
-            case 0x4C:
-            case 0x4D:
-            case 0x4E:
-            case 0x4F:
-            case 0x50:
-            case 0x51:
-            case 0x52:
-            case 0x53:
-            case 0x54:
-            case 0x55:
-            case 0x56:
-            case 0x57:
-            case 0x58:
-            case 0x59:
-            case 0x5A:
-            case 0x5B:
-            case 0x5C:
-            case 0x5D:
-            case 0x5E:
-            case 0x5F:
-            case 0x60:
-            case 0x61:
-            case 0x62:
-            case 0x63:
-            case 0x64:
-            case 0x65:
-            case 0x66:
-            case 0x67:
-            case 0x68:
-            case 0x69:
-            case 0x6A:
-            case 0x6B:
-            case 0x6C:
-            case 0x6D:
-            case 0x6E:
-            case 0x6F:
-            case 0x70:
-            case 0x71:
-            case 0x72:
-            case 0x73:
-            case 0x74:
-            case 0x75:
-            case 0x76:
-            case 0x77:
-            case 0x78:
-            case 0x79:
-            case 0x7A:
-            case 0x7B:
-            case 0x7C:
-            case 0x7D:
-            case 0x7E:
-            case 0x7F:
-                return sax->number_unsigned(static_cast<number_unsigned_t>(current));
-
-            // fixmap
-            case 0x80:
-            case 0x81:
-            case 0x82:
-            case 0x83:
-            case 0x84:
-            case 0x85:
-            case 0x86:
-            case 0x87:
-            case 0x88:
-            case 0x89:
-            case 0x8A:
-            case 0x8B:
-            case 0x8C:
-            case 0x8D:
-            case 0x8E:
-            case 0x8F:
-                return get_msgpack_object(conditional_static_cast<std::size_t>(static_cast<unsigned int>(current) & 0x0Fu));
-
-            // fixarray
-            case 0x90:
-            case 0x91:
-            case 0x92:
-            case 0x93:
-            case 0x94:
-            case 0x95:
-            case 0x96:
-            case 0x97:
-            case 0x98:
-            case 0x99:
-            case 0x9A:
-            case 0x9B:
-            case 0x9C:
-            case 0x9D:
-            case 0x9E:
-            case 0x9F:
-                return get_msgpack_array(conditional_static_cast<std::size_t>(static_cast<unsigned int>(current) & 0x0Fu));
-
-            // fixstr
-            case 0xA0:
-            case 0xA1:
-            case 0xA2:
-            case 0xA3:
-            case 0xA4:
-            case 0xA5:
-            case 0xA6:
-            case 0xA7:
-            case 0xA8:
-            case 0xA9:
-            case 0xAA:
-            case 0xAB:
-            case 0xAC:
-            case 0xAD:
-            case 0xAE:
-            case 0xAF:
-            case 0xB0:
-            case 0xB1:
-            case 0xB2:
-            case 0xB3:
-            case 0xB4:
-            case 0xB5:
-            case 0xB6:
-            case 0xB7:
-            case 0xB8:
-            case 0xB9:
-            case 0xBA:
-            case 0xBB:
-            case 0xBC:
-            case 0xBD:
-            case 0xBE:
-            case 0xBF:
-            case 0xD9: // str 8
-            case 0xDA: // str 16
-            case 0xDB: // str 32
-            {
-                string_t s;
-                return get_msgpack_string(s) && sax->string(s);
-            }
-
-            case 0xC0: // nil
-                return sax->null();
-
-            case 0xC2: // false
-                return sax->boolean(false);
-
-            case 0xC3: // true
-                return sax->boolean(true);
-
-            case 0xC4: // bin 8
-            case 0xC5: // bin 16
-            case 0xC6: // bin 32
-            case 0xC7: // ext 8
-            case 0xC8: // ext 16
-            case 0xC9: // ext 32
-            case 0xD4: // fixext 1
-            case 0xD5: // fixext 2
-            case 0xD6: // fixext 4
-            case 0xD7: // fixext 8
-            case 0xD8: // fixext 16
-            {
-                binary_t b;
-                return get_msgpack_binary(b) && sax->binary(b);
-            }
-
-            case 0xCA: // float 32
-            {
-                float number{};
-                return get_number(input_format_t::msgpack, number) && sax->number_float(static_cast<number_float_t>(number), "");
-            }
-
-            case 0xCB: // float 64
-            {
-                double number{};
-                return get_number(input_format_t::msgpack, number) && sax->number_float(static_cast<number_float_t>(number), "");
-            }
-
-            case 0xCC: // uint 8
-            {
-                std::uint8_t number{};
-                return get_number(input_format_t::msgpack, number) && sax->number_unsigned(number);
-            }
-
-            case 0xCD: // uint 16
-            {
-                std::uint16_t number{};
-                return get_number(input_format_t::msgpack, number) && sax->number_unsigned(number);
-            }
-
-            case 0xCE: // uint 32
-            {
-                std::uint32_t number{};
-                return get_number(input_format_t::msgpack, number) && sax->number_unsigned(number);
-            }
-
-            case 0xCF: // uint 64
-            {
-                std::uint64_t number{};
-                return get_number(input_format_t::msgpack, number) && sax->number_unsigned(number);
-            }
-
-            case 0xD0: // int 8
-            {
-                std::int8_t number{};
-                return get_number(input_format_t::msgpack, number) && sax->number_integer(number);
-            }
-
-            case 0xD1: // int 16
-            {
-                std::int16_t number{};
-                return get_number(input_format_t::msgpack, number) && sax->number_integer(number);
-            }
-
-            case 0xD2: // int 32
-            {
-                std::int32_t number{};
-                return get_number(input_format_t::msgpack, number) && sax->number_integer(number);
-            }
-
-            case 0xD3: // int 64
-            {
-                std::int64_t number{};
-                return get_number(input_format_t::msgpack, number) && sax->number_integer(number);
-            }
-
-            case 0xDC: // array 16
-            {
-                std::uint16_t len{};
-                return get_number(input_format_t::msgpack, len) && get_msgpack_array(static_cast<std::size_t>(len));
-            }
-
-            case 0xDD: // array 32
-            {
-                std::uint32_t len{};
-                return get_number(input_format_t::msgpack, len) && get_msgpack_array(conditional_static_cast<std::size_t>(len));
-            }
-
-            case 0xDE: // map 16
-            {
-                std::uint16_t len{};
-                return get_number(input_format_t::msgpack, len) && get_msgpack_object(static_cast<std::size_t>(len));
-            }
-
-            case 0xDF: // map 32
-            {
-                std::uint32_t len{};
-                return get_number(input_format_t::msgpack, len) && get_msgpack_object(conditional_static_cast<std::size_t>(len));
-            }
-
-            // negative fixint
-            case 0xE0:
-            case 0xE1:
-            case 0xE2:
-            case 0xE3:
-            case 0xE4:
-            case 0xE5:
-            case 0xE6:
-            case 0xE7:
-            case 0xE8:
-            case 0xE9:
-            case 0xEA:
-            case 0xEB:
-            case 0xEC:
-            case 0xED:
-            case 0xEE:
-            case 0xEF:
-            case 0xF0:
-            case 0xF1:
-            case 0xF2:
-            case 0xF3:
-            case 0xF4:
-            case 0xF5:
-            case 0xF6:
-            case 0xF7:
-            case 0xF8:
-            case 0xF9:
-            case 0xFA:
-            case 0xFB:
-            case 0xFC:
-            case 0xFD:
-            case 0xFE:
-            case 0xFF:
-                return sax->number_integer(static_cast<std::int8_t>(current));
-
-            default: // anything else
-            {
-                auto last_token = get_token_string();
-                return sax->parse_error(chars_read, last_token, parse_error::create(112, chars_read,
-                                        exception_message(input_format_t::msgpack, concat("invalid byte: 0x", last_token), "value"), nullptr));
-            }
-        }
-    }
-
-    /*!
-    @brief reads a MessagePack string
-
-    This function first reads starting bytes to determine the expected
-    string length and then copies this number of bytes into a string.
-
-    @param[out] result  created string
-
-    @return whether string creation completed
-    */
-    bool get_msgpack_string(string_t& result)
-    {
-        if (JSON_HEDLEY_UNLIKELY(!unexpect_eof(input_format_t::msgpack, "string")))
-        {
-            return false;
-        }
-
-        switch (current)
-        {
-            // fixstr
-            case 0xA0:
-            case 0xA1:
-            case 0xA2:
-            case 0xA3:
-            case 0xA4:
-            case 0xA5:
-            case 0xA6:
-            case 0xA7:
-            case 0xA8:
-            case 0xA9:
-            case 0xAA:
-            case 0xAB:
-            case 0xAC:
-            case 0xAD:
-            case 0xAE:
-            case 0xAF:
-            case 0xB0:
-            case 0xB1:
-            case 0xB2:
-            case 0xB3:
-            case 0xB4:
-            case 0xB5:
-            case 0xB6:
-            case 0xB7:
-            case 0xB8:
-            case 0xB9:
-            case 0xBA:
-            case 0xBB:
-            case 0xBC:
-            case 0xBD:
-            case 0xBE:
-            case 0xBF:
-            {
-                return get_string(input_format_t::msgpack, static_cast<unsigned int>(current) & 0x1Fu, result);
-            }
-
-            case 0xD9: // str 8
-            {
-                std::uint8_t len{};
-                return get_number(input_format_t::msgpack, len) && get_string(input_format_t::msgpack, len, result);
-            }
-
-            case 0xDA: // str 16
-            {
-                std::uint16_t len{};
-                return get_number(input_format_t::msgpack, len) && get_string(input_format_t::msgpack, len, result);
-            }
-
-            case 0xDB: // str 32
-            {
-                std::uint32_t len{};
-                return get_number(input_format_t::msgpack, len) && get_string(input_format_t::msgpack, len, result);
-            }
-
-            default:
-            {
-                auto last_token = get_token_string();
-                return sax->parse_error(chars_read, last_token, parse_error::create(113, chars_read,
-                                        exception_message(input_format_t::msgpack, concat("expected length specification (0xA0-0xBF, 0xD9-0xDB); last byte: 0x", last_token), "string"), nullptr));
-            }
-        }
-    }
-
-    /*!
-    @brief reads a MessagePack byte array
-
-    This function first reads starting bytes to determine the expected
-    byte array length and then copies this number of bytes into a byte array.
-
-    @param[out] result  created byte array
-
-    @return whether byte array creation completed
-    */
-    bool get_msgpack_binary(binary_t& result)
-    {
-        // helper function to set the subtype
-        auto assign_and_return_true = [&result](std::int8_t subtype)
-        {
-            result.set_subtype(static_cast<std::uint8_t>(subtype));
-            return true;
-        };
-
-        switch (current)
-        {
-            case 0xC4: // bin 8
-            {
-                std::uint8_t len{};
-                return get_number(input_format_t::msgpack, len) &&
-                       get_binary(input_format_t::msgpack, len, result);
-            }
-
-            case 0xC5: // bin 16
-            {
-                std::uint16_t len{};
-                return get_number(input_format_t::msgpack, len) &&
-                       get_binary(input_format_t::msgpack, len, result);
-            }
-
-            case 0xC6: // bin 32
-            {
-                std::uint32_t len{};
-                return get_number(input_format_t::msgpack, len) &&
-                       get_binary(input_format_t::msgpack, len, result);
-            }
-
-            case 0xC7: // ext 8
-            {
-                std::uint8_t len{};
-                std::int8_t subtype{};
-                return get_number(input_format_t::msgpack, len) &&
-                       get_number(input_format_t::msgpack, subtype) &&
-                       get_binary(input_format_t::msgpack, len, result) &&
-                       assign_and_return_true(subtype);
-            }
-
-            case 0xC8: // ext 16
-            {
-                std::uint16_t len{};
-                std::int8_t subtype{};
-                return get_number(input_format_t::msgpack, len) &&
-                       get_number(input_format_t::msgpack, subtype) &&
-                       get_binary(input_format_t::msgpack, len, result) &&
-                       assign_and_return_true(subtype);
-            }
-
-            case 0xC9: // ext 32
-            {
-                std::uint32_t len{};
-                std::int8_t subtype{};
-                return get_number(input_format_t::msgpack, len) &&
-                       get_number(input_format_t::msgpack, subtype) &&
-                       get_binary(input_format_t::msgpack, len, result) &&
-                       assign_and_return_true(subtype);
-            }
-
-            case 0xD4: // fixext 1
-            {
-                std::int8_t subtype{};
-                return get_number(input_format_t::msgpack, subtype) &&
-                       get_binary(input_format_t::msgpack, 1, result) &&
-                       assign_and_return_true(subtype);
-            }
-
-            case 0xD5: // fixext 2
-            {
-                std::int8_t subtype{};
-                return get_number(input_format_t::msgpack, subtype) &&
-                       get_binary(input_format_t::msgpack, 2, result) &&
-                       assign_and_return_true(subtype);
-            }
-
-            case 0xD6: // fixext 4
-            {
-                std::int8_t subtype{};
-                return get_number(input_format_t::msgpack, subtype) &&
-                       get_binary(input_format_t::msgpack, 4, result) &&
-                       assign_and_return_true(subtype);
-            }
-
-            case 0xD7: // fixext 8
-            {
-                std::int8_t subtype{};
-                return get_number(input_format_t::msgpack, subtype) &&
-                       get_binary(input_format_t::msgpack, 8, result) &&
-                       assign_and_return_true(subtype);
-            }
-
-            case 0xD8: // fixext 16
-            {
-                std::int8_t subtype{};
-                return get_number(input_format_t::msgpack, subtype) &&
-                       get_binary(input_format_t::msgpack, 16, result) &&
-                       assign_and_return_true(subtype);
-            }
-
-            default:           // LCOV_EXCL_LINE
-                return false;  // LCOV_EXCL_LINE
-        }
-    }
-
-    /*!
-    @param[in] len  the length of the array
-    @return whether array creation completed
-    */
-    bool get_msgpack_array(const std::size_t len)
-    {
-        if (JSON_HEDLEY_UNLIKELY(!sax->start_array(len)))
-        {
-            return false;
-        }
-
-        for (std::size_t i = 0; i < len; ++i)
-        {
-            if (JSON_HEDLEY_UNLIKELY(!parse_msgpack_internal()))
-            {
-                return false;
-            }
-        }
-
-        return sax->end_array();
-    }
-
-    /*!
-    @param[in] len  the length of the object
-    @return whether object creation completed
-    */
-    bool get_msgpack_object(const std::size_t len)
-    {
-        if (JSON_HEDLEY_UNLIKELY(!sax->start_object(len)))
-        {
-            return false;
-        }
-
-        string_t key;
-        for (std::size_t i = 0; i < len; ++i)
-        {
-            get();
-            if (JSON_HEDLEY_UNLIKELY(!get_msgpack_string(key) || !sax->key(key)))
-            {
-                return false;
-            }
-
-            if (JSON_HEDLEY_UNLIKELY(!parse_msgpack_internal()))
-            {
-                return false;
-            }
-            key.clear();
-        }
-
-        return sax->end_object();
-    }
-
-    ////////////
-    // UBJSON //
-    ////////////
-
-    /*!
-    @param[in] get_char  whether a new character should be retrieved from the
-                         input (true, default) or whether the last read
-                         character should be considered instead
-
-    @return whether a valid UBJSON value was passed to the SAX parser
-    */
-    bool parse_ubjson_internal(const bool get_char = true)
-    {
-        return get_ubjson_value(get_char ? get_ignore_noop() : current);
-    }
-
-    /*!
-    @brief reads a UBJSON string
-
-    This function is either called after reading the 'S' byte explicitly
-    indicating a string, or in case of an object key where the 'S' byte can be
-    left out.
-
-    @param[out] result   created string
-    @param[in] get_char  whether a new character should be retrieved from the
-                         input (true, default) or whether the last read
-                         character should be considered instead
-
-    @return whether string creation completed
-    */
-    bool get_ubjson_string(string_t& result, const bool get_char = true)
-    {
-        if (get_char)
-        {
-            get();  // TODO(niels): may we ignore N here?
-        }
-
-        if (JSON_HEDLEY_UNLIKELY(!unexpect_eof(input_format, "value")))
-        {
-            return false;
-        }
-
-        switch (current)
-        {
-            case 'U':
-            {
-                std::uint8_t len{};
-                return get_number(input_format, len) && get_string(input_format, len, result);
-            }
-
-            case 'i':
-            {
-                std::int8_t len{};
-                return get_number(input_format, len) && get_string(input_format, len, result);
-            }
-
-            case 'I':
-            {
-                std::int16_t len{};
-                return get_number(input_format, len) && get_string(input_format, len, result);
-            }
-
-            case 'l':
-            {
-                std::int32_t len{};
-                return get_number(input_format, len) && get_string(input_format, len, result);
-            }
-
-            case 'L':
-            {
-                std::int64_t len{};
-                return get_number(input_format, len) && get_string(input_format, len, result);
-            }
-
-            case 'u':
-            {
-                if (input_format != input_format_t::bjdata)
-                {
-                    break;
-                }
-                std::uint16_t len{};
-                return get_number(input_format, len) && get_string(input_format, len, result);
-            }
-
-            case 'm':
-            {
-                if (input_format != input_format_t::bjdata)
-                {
-                    break;
-                }
-                std::uint32_t len{};
-                return get_number(input_format, len) && get_string(input_format, len, result);
-            }
-
-            case 'M':
-            {
-                if (input_format != input_format_t::bjdata)
-                {
-                    break;
-                }
-                std::uint64_t len{};
-                return get_number(input_format, len) && get_string(input_format, len, result);
-            }
-
-            default:
-                break;
-        }
-        auto last_token = get_token_string();
-        std::string message;
-
-        if (input_format != input_format_t::bjdata)
-        {
-            message = "expected length type specification (U, i, I, l, L); last byte: 0x" + last_token;
-        }
-        else
-        {
-            message = "expected length type specification (U, i, u, I, m, l, M, L); last byte: 0x" + last_token;
-        }
-        return sax->parse_error(chars_read, last_token, parse_error::create(113, chars_read, exception_message(input_format, message, "string"), nullptr));
-    }
-
-    /*!
-    @param[out] dim  an integer vector storing the ND array dimensions
-    @return whether reading ND array size vector is successful
-    */
-    bool get_ubjson_ndarray_size(std::vector<size_t>& dim)
-    {
-        std::pair<std::size_t, char_int_type> size_and_type;
-        size_t dimlen = 0;
-        bool no_ndarray = true;
-
-        if (JSON_HEDLEY_UNLIKELY(!get_ubjson_size_type(size_and_type, no_ndarray)))
-        {
-            return false;
-        }
-
-        if (size_and_type.first != npos)
-        {
-            if (size_and_type.second != 0)
-            {
-                if (size_and_type.second != 'N')
-                {
-                    for (std::size_t i = 0; i < size_and_type.first; ++i)
-                    {
-                        if (JSON_HEDLEY_UNLIKELY(!get_ubjson_size_value(dimlen, no_ndarray, size_and_type.second)))
-                        {
-                            return false;
-                        }
-                        dim.push_back(dimlen);
-                    }
-                }
-            }
-            else
-            {
-                for (std::size_t i = 0; i < size_and_type.first; ++i)
-                {
-                    if (JSON_HEDLEY_UNLIKELY(!get_ubjson_size_value(dimlen, no_ndarray)))
-                    {
-                        return false;
-                    }
-                    dim.push_back(dimlen);
-                }
-            }
-        }
-        else
-        {
-            while (current != ']')
-            {
-                if (JSON_HEDLEY_UNLIKELY(!get_ubjson_size_value(dimlen, no_ndarray, current)))
-                {
-                    return false;
-                }
-                dim.push_back(dimlen);
-                get_ignore_noop();
-            }
-        }
-        return true;
-    }
-
-    /*!
-    @param[out] result  determined size
-    @param[in,out] is_ndarray  for input, `true` means already inside an ndarray vector
-                               or ndarray dimension is not allowed; `false` means ndarray
-                               is allowed; for output, `true` means an ndarray is found;
-                               is_ndarray can only return `true` when its initial value
-                               is `false`
-    @param[in] prefix  type marker if already read, otherwise set to 0
-
-    @return whether size determination completed
-    */
-    bool get_ubjson_size_value(std::size_t& result, bool& is_ndarray, char_int_type prefix = 0)
-    {
-        if (prefix == 0)
-        {
-            prefix = get_ignore_noop();
-        }
-
-        switch (prefix)
-        {
-            case 'U':
-            {
-                std::uint8_t number{};
-                if (JSON_HEDLEY_UNLIKELY(!get_number(input_format, number)))
-                {
-                    return false;
-                }
-                result = static_cast<std::size_t>(number);
-                return true;
-            }
-
-            case 'i':
-            {
-                std::int8_t number{};
-                if (JSON_HEDLEY_UNLIKELY(!get_number(input_format, number)))
-                {
-                    return false;
-                }
-                if (number < 0)
-                {
-                    return sax->parse_error(chars_read, get_token_string(), parse_error::create(113, chars_read,
-                                            exception_message(input_format, "count in an optimized container must be positive", "size"), nullptr));
-                }
-                result = static_cast<std::size_t>(number); // NOLINT(bugprone-signed-char-misuse,cert-str34-c): number is not a char
-                return true;
-            }
-
-            case 'I':
-            {
-                std::int16_t number{};
-                if (JSON_HEDLEY_UNLIKELY(!get_number(input_format, number)))
-                {
-                    return false;
-                }
-                if (number < 0)
-                {
-                    return sax->parse_error(chars_read, get_token_string(), parse_error::create(113, chars_read,
-                                            exception_message(input_format, "count in an optimized container must be positive", "size"), nullptr));
-                }
-                result = static_cast<std::size_t>(number);
-                return true;
-            }
-
-            case 'l':
-            {
-                std::int32_t number{};
-                if (JSON_HEDLEY_UNLIKELY(!get_number(input_format, number)))
-                {
-                    return false;
-                }
-                if (number < 0)
-                {
-                    return sax->parse_error(chars_read, get_token_string(), parse_error::create(113, chars_read,
-                                            exception_message(input_format, "count in an optimized container must be positive", "size"), nullptr));
-                }
-                result = static_cast<std::size_t>(number);
-                return true;
-            }
-
-            case 'L':
-            {
-                std::int64_t number{};
-                if (JSON_HEDLEY_UNLIKELY(!get_number(input_format, number)))
-                {
-                    return false;
-                }
-                if (number < 0)
-                {
-                    return sax->parse_error(chars_read, get_token_string(), parse_error::create(113, chars_read,
-                                            exception_message(input_format, "count in an optimized container must be positive", "size"), nullptr));
-                }
-                if (!value_in_range_of<std::size_t>(number))
-                {
-                    return sax->parse_error(chars_read, get_token_string(), out_of_range::create(408,
-                                            exception_message(input_format, "integer value overflow", "size"), nullptr));
-                }
-                result = static_cast<std::size_t>(number);
-                return true;
-            }
-
-            case 'u':
-            {
-                if (input_format != input_format_t::bjdata)
-                {
-                    break;
-                }
-                std::uint16_t number{};
-                if (JSON_HEDLEY_UNLIKELY(!get_number(input_format, number)))
-                {
-                    return false;
-                }
-                result = static_cast<std::size_t>(number);
-                return true;
-            }
-
-            case 'm':
-            {
-                if (input_format != input_format_t::bjdata)
-                {
-                    break;
-                }
-                std::uint32_t number{};
-                if (JSON_HEDLEY_UNLIKELY(!get_number(input_format, number)))
-                {
-                    return false;
-                }
-                result = conditional_static_cast<std::size_t>(number);
-                return true;
-            }
-
-            case 'M':
-            {
-                if (input_format != input_format_t::bjdata)
-                {
-                    break;
-                }
-                std::uint64_t number{};
-                if (JSON_HEDLEY_UNLIKELY(!get_number(input_format, number)))
-                {
-                    return false;
-                }
-                if (!value_in_range_of<std::size_t>(number))
-                {
-                    return sax->parse_error(chars_read, get_token_string(), out_of_range::create(408,
-                                            exception_message(input_format, "integer value overflow", "size"), nullptr));
-                }
-                result = detail::conditional_static_cast<std::size_t>(number);
-                return true;
-            }
-
-            case '[':
-            {
-                if (input_format != input_format_t::bjdata)
-                {
-                    break;
-                }
-                if (is_ndarray) // ndarray dimensional vector can only contain integers, and can not embed another array
-                {
-                    return sax->parse_error(chars_read, get_token_string(), parse_error::create(113, chars_read, exception_message(input_format, "ndarray dimensional vector is not allowed", "size"), nullptr));
-                }
-                std::vector<size_t> dim;
-                if (JSON_HEDLEY_UNLIKELY(!get_ubjson_ndarray_size(dim)))
-                {
-                    return false;
-                }
-                if (dim.size() == 1 || (dim.size() == 2 && dim.at(0) == 1)) // return normal array size if 1D row vector
-                {
-                    result = dim.at(dim.size() - 1);
-                    return true;
-                }
-                if (!dim.empty())  // if ndarray, convert to an object in JData annotated array format
-                {
-                    for (auto i : dim) // test if any dimension in an ndarray is 0, if so, return a 1D empty container
-                    {
-                        if ( i == 0 )
-                        {
-                            result = 0;
-                            return true;
-                        }
-                    }
-
-                    string_t key = "_ArraySize_";
-                    if (JSON_HEDLEY_UNLIKELY(!sax->start_object(3) || !sax->key(key) || !sax->start_array(dim.size())))
-                    {
-                        return false;
-                    }
-                    result = 1;
-                    for (auto i : dim)
-                    {
-                        result *= i;
-                        if (result == 0 || result == npos) // because dim elements shall not have zeros, result = 0 means overflow happened; it also can't be npos as it is used to initialize size in get_ubjson_size_type()
-                        {
-                            return sax->parse_error(chars_read, get_token_string(), out_of_range::create(408, exception_message(input_format, "excessive ndarray size caused overflow", "size"), nullptr));
-                        }
-                        if (JSON_HEDLEY_UNLIKELY(!sax->number_unsigned(static_cast<number_unsigned_t>(i))))
-                        {
-                            return false;
-                        }
-                    }
-                    is_ndarray = true;
-                    return sax->end_array();
-                }
-                result = 0;
-                return true;
-            }
-
-            default:
-                break;
-        }
-        auto last_token = get_token_string();
-        std::string message;
-
-        if (input_format != input_format_t::bjdata)
-        {
-            message = "expected length type specification (U, i, I, l, L) after '#'; last byte: 0x" + last_token;
-        }
-        else
-        {
-            message = "expected length type specification (U, i, u, I, m, l, M, L) after '#'; last byte: 0x" + last_token;
-        }
-        return sax->parse_error(chars_read, last_token, parse_error::create(113, chars_read, exception_message(input_format, message, "size"), nullptr));
-    }
-
-    /*!
-    @brief determine the type and size for a container
-
-    In the optimized UBJSON format, a type and a size can be provided to allow
-    for a more compact representation.
-
-    @param[out] result  pair of the size and the type
-    @param[in] inside_ndarray  whether the parser is parsing an ND array dimensional vector
-
-    @return whether pair creation completed
-    */
-    bool get_ubjson_size_type(std::pair<std::size_t, char_int_type>& result, bool inside_ndarray = false)
-    {
-        result.first = npos; // size
-        result.second = 0; // type
-        bool is_ndarray = false;
-
-        get_ignore_noop();
-
-        if (current == '$')
-        {
-            result.second = get();  // must not ignore 'N', because 'N' maybe the type
-            if (input_format == input_format_t::bjdata
-                    && JSON_HEDLEY_UNLIKELY(std::binary_search(bjd_optimized_type_markers.begin(), bjd_optimized_type_markers.end(), result.second)))
-            {
-                auto last_token = get_token_string();
-                return sax->parse_error(chars_read, last_token, parse_error::create(112, chars_read,
-                                        exception_message(input_format, concat("marker 0x", last_token, " is not a permitted optimized array type"), "type"), nullptr));
-            }
-
-            if (JSON_HEDLEY_UNLIKELY(!unexpect_eof(input_format, "type")))
-            {
-                return false;
-            }
-
-            get_ignore_noop();
-            if (JSON_HEDLEY_UNLIKELY(current != '#'))
-            {
-                if (JSON_HEDLEY_UNLIKELY(!unexpect_eof(input_format, "value")))
-                {
-                    return false;
-                }
-                auto last_token = get_token_string();
-                return sax->parse_error(chars_read, last_token, parse_error::create(112, chars_read,
-                                        exception_message(input_format, concat("expected '#' after type information; last byte: 0x", last_token), "size"), nullptr));
-            }
-
-            const bool is_error = get_ubjson_size_value(result.first, is_ndarray);
-            if (input_format == input_format_t::bjdata && is_ndarray)
-            {
-                if (inside_ndarray)
-                {
-                    return sax->parse_error(chars_read, get_token_string(), parse_error::create(112, chars_read,
-                                            exception_message(input_format, "ndarray can not be recursive", "size"), nullptr));
-                }
-                result.second |= (1 << 8); // use bit 8 to indicate ndarray, all UBJSON and BJData markers should be ASCII letters
-            }
-            return is_error;
-        }
-
-        if (current == '#')
-        {
-            const bool is_error = get_ubjson_size_value(result.first, is_ndarray);
-            if (input_format == input_format_t::bjdata && is_ndarray)
-            {
-                return sax->parse_error(chars_read, get_token_string(), parse_error::create(112, chars_read,
-                                        exception_message(input_format, "ndarray requires both type and size", "size"), nullptr));
-            }
-            return is_error;
-        }
-
-        return true;
-    }
-
-    /*!
-    @param prefix  the previously read or set type prefix
-    @return whether value creation completed
-    */
-    bool get_ubjson_value(const char_int_type prefix)
-    {
-        switch (prefix)
-        {
-            case std::char_traits<char_type>::eof():  // EOF
-                return unexpect_eof(input_format, "value");
-
-            case 'T':  // true
-                return sax->boolean(true);
-            case 'F':  // false
-                return sax->boolean(false);
-
-            case 'Z':  // null
-                return sax->null();
-
-            case 'U':
-            {
-                std::uint8_t number{};
-                return get_number(input_format, number) && sax->number_unsigned(number);
-            }
-
-            case 'i':
-            {
-                std::int8_t number{};
-                return get_number(input_format, number) && sax->number_integer(number);
-            }
-
-            case 'I':
-            {
-                std::int16_t number{};
-                return get_number(input_format, number) && sax->number_integer(number);
-            }
-
-            case 'l':
-            {
-                std::int32_t number{};
-                return get_number(input_format, number) && sax->number_integer(number);
-            }
-
-            case 'L':
-            {
-                std::int64_t number{};
-                return get_number(input_format, number) && sax->number_integer(number);
-            }
-
-            case 'u':
-            {
-                if (input_format != input_format_t::bjdata)
-                {
-                    break;
-                }
-                std::uint16_t number{};
-                return get_number(input_format, number) && sax->number_unsigned(number);
-            }
-
-            case 'm':
-            {
-                if (input_format != input_format_t::bjdata)
-                {
-                    break;
-                }
-                std::uint32_t number{};
-                return get_number(input_format, number) && sax->number_unsigned(number);
-            }
-
-            case 'M':
-            {
-                if (input_format != input_format_t::bjdata)
-                {
-                    break;
-                }
-                std::uint64_t number{};
-                return get_number(input_format, number) && sax->number_unsigned(number);
-            }
-
-            case 'h':
-            {
-                if (input_format != input_format_t::bjdata)
-                {
-                    break;
-                }
-                const auto byte1_raw = get();
-                if (JSON_HEDLEY_UNLIKELY(!unexpect_eof(input_format, "number")))
-                {
-                    return false;
-                }
-                const auto byte2_raw = get();
-                if (JSON_HEDLEY_UNLIKELY(!unexpect_eof(input_format, "number")))
-                {
-                    return false;
-                }
-
-                const auto byte1 = static_cast<unsigned char>(byte1_raw);
-                const auto byte2 = static_cast<unsigned char>(byte2_raw);
-
-                // code from RFC 7049, Appendix D, Figure 3:
-                // As half-precision floating-point numbers were only added
-                // to IEEE 754 in 2008, today's programming platforms often
-                // still only have limited support for them. It is very
-                // easy to include at least decoding support for them even
-                // without such support. An example of a small decoder for
-                // half-precision floating-point numbers in the C language
-                // is shown in Fig. 3.
-                const auto half = static_cast<unsigned int>((byte2 << 8u) + byte1);
-                const double val = [&half]
-                {
-                    const int exp = (half >> 10u) & 0x1Fu;
-                    const unsigned int mant = half & 0x3FFu;
-                    JSON_ASSERT(0 <= exp&& exp <= 32);
-                    JSON_ASSERT(mant <= 1024);
-                    switch (exp)
-                    {
-                        case 0:
-                            return std::ldexp(mant, -24);
-                        case 31:
-                            return (mant == 0)
-                            ? std::numeric_limits<double>::infinity()
-                            : std::numeric_limits<double>::quiet_NaN();
-                        default:
-                            return std::ldexp(mant + 1024, exp - 25);
-                    }
-                }();
-                return sax->number_float((half & 0x8000u) != 0
-                                         ? static_cast<number_float_t>(-val)
-                                         : static_cast<number_float_t>(val), "");
-            }
-
-            case 'd':
-            {
-                float number{};
-                return get_number(input_format, number) && sax->number_float(static_cast<number_float_t>(number), "");
-            }
-
-            case 'D':
-            {
-                double number{};
-                return get_number(input_format, number) && sax->number_float(static_cast<number_float_t>(number), "");
-            }
-
-            case 'H':
-            {
-                return get_ubjson_high_precision_number();
-            }
-
-            case 'C':  // char
-            {
-                get();
-                if (JSON_HEDLEY_UNLIKELY(!unexpect_eof(input_format, "char")))
-                {
-                    return false;
-                }
-                if (JSON_HEDLEY_UNLIKELY(current > 127))
-                {
-                    auto last_token = get_token_string();
-                    return sax->parse_error(chars_read, last_token, parse_error::create(113, chars_read,
-                                            exception_message(input_format, concat("byte after 'C' must be in range 0x00..0x7F; last byte: 0x", last_token), "char"), nullptr));
-                }
-                string_t s(1, static_cast<typename string_t::value_type>(current));
-                return sax->string(s);
-            }
-
-            case 'S':  // string
-            {
-                string_t s;
-                return get_ubjson_string(s) && sax->string(s);
-            }
-
-            case '[':  // array
-                return get_ubjson_array();
-
-            case '{':  // object
-                return get_ubjson_object();
-
-            default: // anything else
-                break;
-        }
-        auto last_token = get_token_string();
-        return sax->parse_error(chars_read, last_token, parse_error::create(112, chars_read, exception_message(input_format, "invalid byte: 0x" + last_token, "value"), nullptr));
-    }
-
-    /*!
-    @return whether array creation completed
-    */
-    bool get_ubjson_array()
-    {
-        std::pair<std::size_t, char_int_type> size_and_type;
-        if (JSON_HEDLEY_UNLIKELY(!get_ubjson_size_type(size_and_type)))
-        {
-            return false;
-        }
-
-        // if bit-8 of size_and_type.second is set to 1, encode bjdata ndarray as an object in JData annotated array format (https://github.com/NeuroJSON/jdata):
-        // {"_ArrayType_" : "typeid", "_ArraySize_" : [n1, n2, ...], "_ArrayData_" : [v1, v2, ...]}
-
-        if (input_format == input_format_t::bjdata && size_and_type.first != npos && (size_and_type.second & (1 << 8)) != 0)
-        {
-            size_and_type.second &= ~(static_cast<char_int_type>(1) << 8);  // use bit 8 to indicate ndarray, here we remove the bit to restore the type marker
-            auto it = std::lower_bound(bjd_types_map.begin(), bjd_types_map.end(), size_and_type.second, [](const bjd_type & p, char_int_type t)
-            {
-                return p.first < t;
-            });
-            string_t key = "_ArrayType_";
-            if (JSON_HEDLEY_UNLIKELY(it == bjd_types_map.end() || it->first != size_and_type.second))
-            {
-                auto last_token = get_token_string();
-                return sax->parse_error(chars_read, last_token, parse_error::create(112, chars_read,
-                                        exception_message(input_format, "invalid byte: 0x" + last_token, "type"), nullptr));
-            }
-
-            string_t type = it->second; // sax->string() takes a reference
-            if (JSON_HEDLEY_UNLIKELY(!sax->key(key) || !sax->string(type)))
-            {
-                return false;
-            }
-
-            if (size_and_type.second == 'C')
-            {
-                size_and_type.second = 'U';
-            }
-
-            key = "_ArrayData_";
-            if (JSON_HEDLEY_UNLIKELY(!sax->key(key) || !sax->start_array(size_and_type.first) ))
-            {
-                return false;
-            }
-
-            for (std::size_t i = 0; i < size_and_type.first; ++i)
-            {
-                if (JSON_HEDLEY_UNLIKELY(!get_ubjson_value(size_and_type.second)))
-                {
-                    return false;
-                }
-            }
-
-            return (sax->end_array() && sax->end_object());
-        }
-
-        if (size_and_type.first != npos)
-        {
-            if (JSON_HEDLEY_UNLIKELY(!sax->start_array(size_and_type.first)))
-            {
-                return false;
-            }
-
-            if (size_and_type.second != 0)
-            {
-                if (size_and_type.second != 'N')
-                {
-                    for (std::size_t i = 0; i < size_and_type.first; ++i)
-                    {
-                        if (JSON_HEDLEY_UNLIKELY(!get_ubjson_value(size_and_type.second)))
-                        {
-                            return false;
-                        }
-                    }
-                }
-            }
-            else
-            {
-                for (std::size_t i = 0; i < size_and_type.first; ++i)
-                {
-                    if (JSON_HEDLEY_UNLIKELY(!parse_ubjson_internal()))
-                    {
-                        return false;
-                    }
-                }
-            }
-        }
-        else
-        {
-            if (JSON_HEDLEY_UNLIKELY(!sax->start_array(static_cast<std::size_t>(-1))))
-            {
-                return false;
-            }
-
-            while (current != ']')
-            {
-                if (JSON_HEDLEY_UNLIKELY(!parse_ubjson_internal(false)))
-                {
-                    return false;
-                }
-                get_ignore_noop();
-            }
-        }
-
-        return sax->end_array();
-    }
-
-    /*!
-    @return whether object creation completed
-    */
-    bool get_ubjson_object()
-    {
-        std::pair<std::size_t, char_int_type> size_and_type;
-        if (JSON_HEDLEY_UNLIKELY(!get_ubjson_size_type(size_and_type)))
-        {
-            return false;
-        }
-
-        // do not accept ND-array size in objects in BJData
-        if (input_format == input_format_t::bjdata && size_and_type.first != npos && (size_and_type.second & (1 << 8)) != 0)
-        {
-            auto last_token = get_token_string();
-            return sax->parse_error(chars_read, last_token, parse_error::create(112, chars_read,
-                                    exception_message(input_format, "BJData object does not support ND-array size in optimized format", "object"), nullptr));
-        }
-
-        string_t key;
-        if (size_and_type.first != npos)
-        {
-            if (JSON_HEDLEY_UNLIKELY(!sax->start_object(size_and_type.first)))
-            {
-                return false;
-            }
-
-            if (size_and_type.second != 0)
-            {
-                for (std::size_t i = 0; i < size_and_type.first; ++i)
-                {
-                    if (JSON_HEDLEY_UNLIKELY(!get_ubjson_string(key) || !sax->key(key)))
-                    {
-                        return false;
-                    }
-                    if (JSON_HEDLEY_UNLIKELY(!get_ubjson_value(size_and_type.second)))
-                    {
-                        return false;
-                    }
-                    key.clear();
-                }
-            }
-            else
-            {
-                for (std::size_t i = 0; i < size_and_type.first; ++i)
-                {
-                    if (JSON_HEDLEY_UNLIKELY(!get_ubjson_string(key) || !sax->key(key)))
-                    {
-                        return false;
-                    }
-                    if (JSON_HEDLEY_UNLIKELY(!parse_ubjson_internal()))
-                    {
-                        return false;
-                    }
-                    key.clear();
-                }
-            }
-        }
-        else
-        {
-            if (JSON_HEDLEY_UNLIKELY(!sax->start_object(static_cast<std::size_t>(-1))))
-            {
-                return false;
-            }
-
-            while (current != '}')
-            {
-                if (JSON_HEDLEY_UNLIKELY(!get_ubjson_string(key, false) || !sax->key(key)))
-                {
-                    return false;
-                }
-                if (JSON_HEDLEY_UNLIKELY(!parse_ubjson_internal()))
-                {
-                    return false;
-                }
-                get_ignore_noop();
-                key.clear();
-            }
-        }
-
-        return sax->end_object();
-    }
-
-    // Note, no reader for UBJSON binary types is implemented because they do
-    // not exist
-
-    bool get_ubjson_high_precision_number()
-    {
-        // get size of following number string
-        std::size_t size{};
-        bool no_ndarray = true;
-        auto res = get_ubjson_size_value(size, no_ndarray);
-        if (JSON_HEDLEY_UNLIKELY(!res))
-        {
-            return res;
-        }
-
-        // get number string
-        std::vector<char> number_vector;
-        for (std::size_t i = 0; i < size; ++i)
-        {
-            get();
-            if (JSON_HEDLEY_UNLIKELY(!unexpect_eof(input_format, "number")))
-            {
-                return false;
-            }
-            number_vector.push_back(static_cast<char>(current));
-        }
-
-        // parse number string
-        using ia_type = decltype(detail::input_adapter(number_vector));
-        auto number_lexer = detail::lexer<BasicJsonType, ia_type>(detail::input_adapter(number_vector), false);
-        const auto result_number = number_lexer.scan();
-        const auto number_string = number_lexer.get_token_string();
-        const auto result_remainder = number_lexer.scan();
-
-        using token_type = typename detail::lexer_base<BasicJsonType>::token_type;
-
-        if (JSON_HEDLEY_UNLIKELY(result_remainder != token_type::end_of_input))
-        {
-            return sax->parse_error(chars_read, number_string, parse_error::create(115, chars_read,
-                                    exception_message(input_format, concat("invalid number text: ", number_lexer.get_token_string()), "high-precision number"), nullptr));
-        }
-
-        switch (result_number)
-        {
-            case token_type::value_integer:
-                return sax->number_integer(number_lexer.get_number_integer());
-            case token_type::value_unsigned:
-                return sax->number_unsigned(number_lexer.get_number_unsigned());
-            case token_type::value_float:
-                return sax->number_float(number_lexer.get_number_float(), std::move(number_string));
-            case token_type::uninitialized:
-            case token_type::literal_true:
-            case token_type::literal_false:
-            case token_type::literal_null:
-            case token_type::value_string:
-            case token_type::begin_array:
-            case token_type::begin_object:
-            case token_type::end_array:
-            case token_type::end_object:
-            case token_type::name_separator:
-            case token_type::value_separator:
-            case token_type::parse_error:
-            case token_type::end_of_input:
-            case token_type::literal_or_value:
-            default:
-                return sax->parse_error(chars_read, number_string, parse_error::create(115, chars_read,
-                                        exception_message(input_format, concat("invalid number text: ", number_lexer.get_token_string()), "high-precision number"), nullptr));
-        }
-    }
-
-    ///////////////////////
-    // Utility functions //
-    ///////////////////////
-
-    /*!
-    @brief get next character from the input
-
-    This function provides the interface to the used input adapter. It does
-    not throw in case the input reached EOF, but returns a -'ve valued
-    `std::char_traits<char_type>::eof()` in that case.
-
-    @return character read from the input
-    */
-    char_int_type get()
-    {
-        ++chars_read;
-        return current = ia.get_character();
-    }
-
-    /*!
-    @return character read from the input after ignoring all 'N' entries
-    */
-    char_int_type get_ignore_noop()
-    {
-        do
-        {
-            get();
-        }
-        while (current == 'N');
-
-        return current;
-    }
-
-    /*
-    @brief read a number from the input
-
-    @tparam NumberType the type of the number
-    @param[in] format   the current format (for diagnostics)
-    @param[out] result  number of type @a NumberType
-
-    @return whether conversion completed
-
-    @note This function needs to respect the system's endianness, because
-          bytes in CBOR, MessagePack, and UBJSON are stored in network order
-          (big endian) and therefore need reordering on little endian systems.
-          On the other hand, BSON and BJData use little endian and should reorder
-          on big endian systems.
-    */
-    template<typename NumberType, bool InputIsLittleEndian = false>
-    bool get_number(const input_format_t format, NumberType& result)
-    {
-        // step 1: read input into array with system's byte order
-        std::array<std::uint8_t, sizeof(NumberType)> vec{};
-        for (std::size_t i = 0; i < sizeof(NumberType); ++i)
-        {
-            get();
-            if (JSON_HEDLEY_UNLIKELY(!unexpect_eof(format, "number")))
-            {
-                return false;
-            }
-
-            // reverse byte order prior to conversion if necessary
-            if (is_little_endian != (InputIsLittleEndian || format == input_format_t::bjdata))
-            {
-                vec[sizeof(NumberType) - i - 1] = static_cast<std::uint8_t>(current);
-            }
-            else
-            {
-                vec[i] = static_cast<std::uint8_t>(current); // LCOV_EXCL_LINE
-            }
-        }
-
-        // step 2: convert array into number of type T and return
-        std::memcpy(&result, vec.data(), sizeof(NumberType));
-        return true;
-    }
-
-    /*!
-    @brief create a string by reading characters from the input
-
-    @tparam NumberType the type of the number
-    @param[in] format the current format (for diagnostics)
-    @param[in] len number of characters to read
-    @param[out] result string created by reading @a len bytes
-
-    @return whether string creation completed
-
-    @note We can not reserve @a len bytes for the result, because @a len
-          may be too large. Usually, @ref unexpect_eof() detects the end of
-          the input before we run out of string memory.
-    */
-    template<typename NumberType>
-    bool get_string(const input_format_t format,
-                    const NumberType len,
-                    string_t& result)
-    {
-        bool success = true;
-        for (NumberType i = 0; i < len; i++)
-        {
-            get();
-            if (JSON_HEDLEY_UNLIKELY(!unexpect_eof(format, "string")))
-            {
-                success = false;
-                break;
-            }
-            result.push_back(static_cast<typename string_t::value_type>(current));
-        }
-        return success;
-    }
-
-    /*!
-    @brief create a byte array by reading bytes from the input
-
-    @tparam NumberType the type of the number
-    @param[in] format the current format (for diagnostics)
-    @param[in] len number of bytes to read
-    @param[out] result byte array created by reading @a len bytes
-
-    @return whether byte array creation completed
-
-    @note We can not reserve @a len bytes for the result, because @a len
-          may be too large. Usually, @ref unexpect_eof() detects the end of
-          the input before we run out of memory.
-    */
-    template<typename NumberType>
-    bool get_binary(const input_format_t format,
-                    const NumberType len,
-                    binary_t& result)
-    {
-        bool success = true;
-        for (NumberType i = 0; i < len; i++)
-        {
-            get();
-            if (JSON_HEDLEY_UNLIKELY(!unexpect_eof(format, "binary")))
-            {
-                success = false;
-                break;
-            }
-            result.push_back(static_cast<std::uint8_t>(current));
-        }
-        return success;
-    }
-
-    /*!
-    @param[in] format   the current format (for diagnostics)
-    @param[in] context  further context information (for diagnostics)
-    @return whether the last read character is not EOF
-    */
-    JSON_HEDLEY_NON_NULL(3)
-    bool unexpect_eof(const input_format_t format, const char* context) const
-    {
-        if (JSON_HEDLEY_UNLIKELY(current == std::char_traits<char_type>::eof()))
-        {
-            return sax->parse_error(chars_read, "<end of file>",
-                                    parse_error::create(110, chars_read, exception_message(format, "unexpected end of input", context), nullptr));
-        }
-        return true;
-    }
-
-    /*!
-    @return a string representation of the last read byte
-    */
-    std::string get_token_string() const
-    {
-        std::array<char, 3> cr{{}};
-        static_cast<void>((std::snprintf)(cr.data(), cr.size(), "%.2hhX", static_cast<unsigned char>(current))); // NOLINT(cppcoreguidelines-pro-type-vararg,hicpp-vararg)
-        return std::string{cr.data()};
-    }
-
-    /*!
-    @param[in] format   the current format
-    @param[in] detail   a detailed error message
-    @param[in] context  further context information
-    @return a message string to use in the parse_error exceptions
-    */
-    std::string exception_message(const input_format_t format,
-                                  const std::string& detail,
-                                  const std::string& context) const
-    {
-        std::string error_msg = "syntax error while parsing ";
-
-        switch (format)
-        {
-            case input_format_t::cbor:
-                error_msg += "CBOR";
-                break;
-
-            case input_format_t::msgpack:
-                error_msg += "MessagePack";
-                break;
-
-            case input_format_t::ubjson:
-                error_msg += "UBJSON";
-                break;
-
-            case input_format_t::bson:
-                error_msg += "BSON";
-                break;
-
-            case input_format_t::bjdata:
-                error_msg += "BJData";
-                break;
-
-            case input_format_t::json: // LCOV_EXCL_LINE
-            default:            // LCOV_EXCL_LINE
-                JSON_ASSERT(false); // NOLINT(cert-dcl03-c,hicpp-static-assert,misc-static-assert) LCOV_EXCL_LINE
-        }
-
-        return concat(error_msg, ' ', context, ": ", detail);
-    }
-
-  private:
-    static JSON_INLINE_VARIABLE constexpr std::size_t npos = static_cast<std::size_t>(-1);
-
-    /// input adapter
-    InputAdapterType ia;
-
-    /// the current character
-    char_int_type current = std::char_traits<char_type>::eof();
-
-    /// the number of characters read
-    std::size_t chars_read = 0;
-
-    /// whether we can assume little endianness
-    const bool is_little_endian = little_endianness();
-
-    /// input format
-    const input_format_t input_format = input_format_t::json;
-
-    /// the SAX parser
-    json_sax_t* sax = nullptr;
-
-    // excluded markers in bjdata optimized type
-#define JSON_BINARY_READER_MAKE_BJD_OPTIMIZED_TYPE_MARKERS_ \
-    make_array<char_int_type>('F', 'H', 'N', 'S', 'T', 'Z', '[', '{')
-
-#define JSON_BINARY_READER_MAKE_BJD_TYPES_MAP_ \
-    make_array<bjd_type>(                      \
-    bjd_type{'C', "char"},                     \
-    bjd_type{'D', "double"},                   \
-    bjd_type{'I', "int16"},                    \
-    bjd_type{'L', "int64"},                    \
-    bjd_type{'M', "uint64"},                   \
-    bjd_type{'U', "uint8"},                    \
-    bjd_type{'d', "single"},                   \
-    bjd_type{'i', "int8"},                     \
-    bjd_type{'l', "int32"},                    \
-    bjd_type{'m', "uint32"},                   \
-    bjd_type{'u', "uint16"})
-
-  JSON_PRIVATE_UNLESS_TESTED:
-    // lookup tables
-    // NOLINTNEXTLINE(cppcoreguidelines-non-private-member-variables-in-classes)
-    const decltype(JSON_BINARY_READER_MAKE_BJD_OPTIMIZED_TYPE_MARKERS_) bjd_optimized_type_markers =
-        JSON_BINARY_READER_MAKE_BJD_OPTIMIZED_TYPE_MARKERS_;
-
-    using bjd_type = std::pair<char_int_type, string_t>;
-    // NOLINTNEXTLINE(cppcoreguidelines-non-private-member-variables-in-classes)
-    const decltype(JSON_BINARY_READER_MAKE_BJD_TYPES_MAP_) bjd_types_map =
-        JSON_BINARY_READER_MAKE_BJD_TYPES_MAP_;
-
-#undef JSON_BINARY_READER_MAKE_BJD_OPTIMIZED_TYPE_MARKERS_
-#undef JSON_BINARY_READER_MAKE_BJD_TYPES_MAP_
-};
-
-#ifndef JSON_HAS_CPP_17
-    template<typename BasicJsonType, typename InputAdapterType, typename SAX>
-    constexpr std::size_t binary_reader<BasicJsonType, InputAdapterType, SAX>::npos;
-#endif
-
-}  // namespace detail
-NLOHMANN_JSON_NAMESPACE_END
-
-// #include <nlohmann/detail/input/input_adapters.hpp>
-
-// #include <nlohmann/detail/input/lexer.hpp>
-
-// #include <nlohmann/detail/input/parser.hpp>
-//     __ _____ _____ _____
-//  __|  |   __|     |   | |  JSON for Modern C++
-// |  |  |__   |  |  | | | |  version 3.11.2
-// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
-//
-// SPDX-FileCopyrightText: 2013-2022 Niels Lohmann <https://nlohmann.me>
-// SPDX-License-Identifier: MIT
-
-
-
-#include <cmath> // isfinite
-#include <cstdint> // uint8_t
-#include <functional> // function
-#include <string> // string
-#include <utility> // move
-#include <vector> // vector
-
-// #include <nlohmann/detail/exceptions.hpp>
-
-// #include <nlohmann/detail/input/input_adapters.hpp>
-
-// #include <nlohmann/detail/input/json_sax.hpp>
-
-// #include <nlohmann/detail/input/lexer.hpp>
-
-// #include <nlohmann/detail/macro_scope.hpp>
-
-// #include <nlohmann/detail/meta/is_sax.hpp>
-
-// #include <nlohmann/detail/string_concat.hpp>
-
-// #include <nlohmann/detail/value_t.hpp>
-
-
-NLOHMANN_JSON_NAMESPACE_BEGIN
-namespace detail
-{
-////////////
-// parser //
-////////////
-
-enum class parse_event_t : std::uint8_t
-{
-    /// the parser read `{` and started to process a JSON object
-    object_start,
-    /// the parser read `}` and finished processing a JSON object
-    object_end,
-    /// the parser read `[` and started to process a JSON array
-    array_start,
-    /// the parser read `]` and finished processing a JSON array
-    array_end,
-    /// the parser read a key of a value in an object
-    key,
-    /// the parser finished reading a JSON value
-    value
-};
-
-template<typename BasicJsonType>
-using parser_callback_t =
-    std::function<bool(int /*depth*/, parse_event_t /*event*/, BasicJsonType& /*parsed*/)>;
-
-/*!
-@brief syntax analysis
-
-This class implements a recursive descent parser.
-*/
-template<typename BasicJsonType, typename InputAdapterType>
-class parser
-{
-    using number_integer_t = typename BasicJsonType::number_integer_t;
-    using number_unsigned_t = typename BasicJsonType::number_unsigned_t;
-    using number_float_t = typename BasicJsonType::number_float_t;
-    using string_t = typename BasicJsonType::string_t;
-    using lexer_t = lexer<BasicJsonType, InputAdapterType>;
-    using token_type = typename lexer_t::token_type;
-
-  public:
-    /// a parser reading from an input adapter
-    explicit parser(InputAdapterType&& adapter,
-                    const parser_callback_t<BasicJsonType> cb = nullptr,
-                    const bool allow_exceptions_ = true,
-                    const bool skip_comments = false)
-        : callback(cb)
-        , m_lexer(std::move(adapter), skip_comments)
-        , allow_exceptions(allow_exceptions_)
-    {
-        // read first token
-        get_token();
-    }
-
-    /*!
-    @brief public parser interface
-
-    @param[in] strict      whether to expect the last token to be EOF
-    @param[in,out] result  parsed JSON value
-
-    @throw parse_error.101 in case of an unexpected token
-    @throw parse_error.102 if to_unicode fails or surrogate error
-    @throw parse_error.103 if to_unicode fails
-    */
-    void parse(const bool strict, BasicJsonType& result)
-    {
-        if (callback)
-        {
-            json_sax_dom_callback_parser<BasicJsonType> sdp(result, callback, allow_exceptions);
-            sax_parse_internal(&sdp);
-
-            // in strict mode, input must be completely read
-            if (strict && (get_token() != token_type::end_of_input))
-            {
-                sdp.parse_error(m_lexer.get_position(),
-                                m_lexer.get_token_string(),
-                                parse_error::create(101, m_lexer.get_position(),
-                                                    exception_message(token_type::end_of_input, "value"), nullptr));
-            }
-
-            // in case of an error, return discarded value
-            if (sdp.is_errored())
-            {
-                result = value_t::discarded;
-                return;
-            }
-
-            // set top-level value to null if it was discarded by the callback
-            // function
-            if (result.is_discarded())
-            {
-                result = nullptr;
-            }
-        }
-        else
-        {
-            json_sax_dom_parser<BasicJsonType> sdp(result, allow_exceptions);
-            sax_parse_internal(&sdp);
-
-            // in strict mode, input must be completely read
-            if (strict && (get_token() != token_type::end_of_input))
-            {
-                sdp.parse_error(m_lexer.get_position(),
-                                m_lexer.get_token_string(),
-                                parse_error::create(101, m_lexer.get_position(), exception_message(token_type::end_of_input, "value"), nullptr));
-            }
-
-            // in case of an error, return discarded value
-            if (sdp.is_errored())
-            {
-                result = value_t::discarded;
-                return;
-            }
-        }
-
-        result.assert_invariant();
-    }
-
-    /*!
-    @brief public accept interface
-
-    @param[in] strict  whether to expect the last token to be EOF
-    @return whether the input is a proper JSON text
-    */
-    bool accept(const bool strict = true)
-    {
-        json_sax_acceptor<BasicJsonType> sax_acceptor;
-        return sax_parse(&sax_acceptor, strict);
-    }
-
-    template<typename SAX>
-    JSON_HEDLEY_NON_NULL(2)
-    bool sax_parse(SAX* sax, const bool strict = true)
-    {
-        (void)detail::is_sax_static_asserts<SAX, BasicJsonType> {};
-        const bool result = sax_parse_internal(sax);
-
-        // strict mode: next byte must be EOF
-        if (result && strict && (get_token() != token_type::end_of_input))
-        {
-            return sax->parse_error(m_lexer.get_position(),
-                                    m_lexer.get_token_string(),
-                                    parse_error::create(101, m_lexer.get_position(), exception_message(token_type::end_of_input, "value"), nullptr));
-        }
-
-        return result;
-    }
-
-  private:
-    template<typename SAX>
-    JSON_HEDLEY_NON_NULL(2)
-    bool sax_parse_internal(SAX* sax)
-    {
-        // stack to remember the hierarchy of structured values we are parsing
-        // true = array; false = object
-        std::vector<bool> states;
-        // value to avoid a goto (see comment where set to true)
-        bool skip_to_state_evaluation = false;
-
-        while (true)
-        {
-            if (!skip_to_state_evaluation)
-            {
-                // invariant: get_token() was called before each iteration
-                switch (last_token)
-                {
-                    case token_type::begin_object:
-                    {
-                        if (JSON_HEDLEY_UNLIKELY(!sax->start_object(static_cast<std::size_t>(-1))))
-                        {
-                            return false;
-                        }
-
-                        // closing } -> we are done
-                        if (get_token() == token_type::end_object)
-                        {
-                            if (JSON_HEDLEY_UNLIKELY(!sax->end_object()))
-                            {
-                                return false;
-                            }
-                            break;
-                        }
-
-                        // parse key
-                        if (JSON_HEDLEY_UNLIKELY(last_token != token_type::value_string))
-                        {
-                            return sax->parse_error(m_lexer.get_position(),
-                                                    m_lexer.get_token_string(),
-                                                    parse_error::create(101, m_lexer.get_position(), exception_message(token_type::value_string, "object key"), nullptr));
-                        }
-                        if (JSON_HEDLEY_UNLIKELY(!sax->key(m_lexer.get_string())))
-                        {
-                            return false;
-                        }
-
-                        // parse separator (:)
-                        if (JSON_HEDLEY_UNLIKELY(get_token() != token_type::name_separator))
-                        {
-                            return sax->parse_error(m_lexer.get_position(),
-                                                    m_lexer.get_token_string(),
-                                                    parse_error::create(101, m_lexer.get_position(), exception_message(token_type::name_separator, "object separator"), nullptr));
-                        }
-
-                        // remember we are now inside an object
-                        states.push_back(false);
-
-                        // parse values
-                        get_token();
-                        continue;
-                    }
-
-                    case token_type::begin_array:
-                    {
-                        if (JSON_HEDLEY_UNLIKELY(!sax->start_array(static_cast<std::size_t>(-1))))
-                        {
-                            return false;
-                        }
-
-                        // closing ] -> we are done
-                        if (get_token() == token_type::end_array)
-                        {
-                            if (JSON_HEDLEY_UNLIKELY(!sax->end_array()))
-                            {
-                                return false;
-                            }
-                            break;
-                        }
-
-                        // remember we are now inside an array
-                        states.push_back(true);
-
-                        // parse values (no need to call get_token)
-                        continue;
-                    }
-
-                    case token_type::value_float:
-                    {
-                        const auto res = m_lexer.get_number_float();
-
-                        if (JSON_HEDLEY_UNLIKELY(!std::isfinite(res)))
-                        {
-                            return sax->parse_error(m_lexer.get_position(),
-                                                    m_lexer.get_token_string(),
-                                                    out_of_range::create(406, concat("number overflow parsing '", m_lexer.get_token_string(), '\''), nullptr));
-                        }
-
-                        if (JSON_HEDLEY_UNLIKELY(!sax->number_float(res, m_lexer.get_string())))
-                        {
-                            return false;
-                        }
-
-                        break;
-                    }
-
-                    case token_type::literal_false:
-                    {
-                        if (JSON_HEDLEY_UNLIKELY(!sax->boolean(false)))
-                        {
-                            return false;
-                        }
-                        break;
-                    }
-
-                    case token_type::literal_null:
-                    {
-                        if (JSON_HEDLEY_UNLIKELY(!sax->null()))
-                        {
-                            return false;
-                        }
-                        break;
-                    }
-
-                    case token_type::literal_true:
-                    {
-                        if (JSON_HEDLEY_UNLIKELY(!sax->boolean(true)))
-                        {
-                            return false;
-                        }
-                        break;
-                    }
-
-                    case token_type::value_integer:
-                    {
-                        if (JSON_HEDLEY_UNLIKELY(!sax->number_integer(m_lexer.get_number_integer())))
-                        {
-                            return false;
-                        }
-                        break;
-                    }
-
-                    case token_type::value_string:
-                    {
-                        if (JSON_HEDLEY_UNLIKELY(!sax->string(m_lexer.get_string())))
-                        {
-                            return false;
-                        }
-                        break;
-                    }
-
-                    case token_type::value_unsigned:
-                    {
-                        if (JSON_HEDLEY_UNLIKELY(!sax->number_unsigned(m_lexer.get_number_unsigned())))
-                        {
-                            return false;
-                        }
-                        break;
-                    }
-
-                    case token_type::parse_error:
-                    {
-                        // using "uninitialized" to avoid "expected" message
-                        return sax->parse_error(m_lexer.get_position(),
-                                                m_lexer.get_token_string(),
-                                                parse_error::create(101, m_lexer.get_position(), exception_message(token_type::uninitialized, "value"), nullptr));
-                    }
-
-                    case token_type::uninitialized:
-                    case token_type::end_array:
-                    case token_type::end_object:
-                    case token_type::name_separator:
-                    case token_type::value_separator:
-                    case token_type::end_of_input:
-                    case token_type::literal_or_value:
-                    default: // the last token was unexpected
-                    {
-                        return sax->parse_error(m_lexer.get_position(),
-                                                m_lexer.get_token_string(),
-                                                parse_error::create(101, m_lexer.get_position(), exception_message(token_type::literal_or_value, "value"), nullptr));
-                    }
-                }
-            }
-            else
-            {
-                skip_to_state_evaluation = false;
-            }
-
-            // we reached this line after we successfully parsed a value
-            if (states.empty())
-            {
-                // empty stack: we reached the end of the hierarchy: done
-                return true;
-            }
-
-            if (states.back())  // array
-            {
-                // comma -> next value
-                if (get_token() == token_type::value_separator)
-                {
-                    // parse a new value
-                    get_token();
-                    continue;
-                }
-
-                // closing ]
-                if (JSON_HEDLEY_LIKELY(last_token == token_type::end_array))
-                {
-                    if (JSON_HEDLEY_UNLIKELY(!sax->end_array()))
-                    {
-                        return false;
-                    }
-
-                    // We are done with this array. Before we can parse a
-                    // new value, we need to evaluate the new state first.
-                    // By setting skip_to_state_evaluation to false, we
-                    // are effectively jumping to the beginning of this if.
-                    JSON_ASSERT(!states.empty());
-                    states.pop_back();
-                    skip_to_state_evaluation = true;
-                    continue;
-                }
-
-                return sax->parse_error(m_lexer.get_position(),
-                                        m_lexer.get_token_string(),
-                                        parse_error::create(101, m_lexer.get_position(), exception_message(token_type::end_array, "array"), nullptr));
-            }
-
-            // states.back() is false -> object
-
-            // comma -> next value
-            if (get_token() == token_type::value_separator)
-            {
-                // parse key
-                if (JSON_HEDLEY_UNLIKELY(get_token() != token_type::value_string))
-                {
-                    return sax->parse_error(m_lexer.get_position(),
-                                            m_lexer.get_token_string(),
-                                            parse_error::create(101, m_lexer.get_position(), exception_message(token_type::value_string, "object key"), nullptr));
-                }
-
-                if (JSON_HEDLEY_UNLIKELY(!sax->key(m_lexer.get_string())))
-                {
-                    return false;
-                }
-
-                // parse separator (:)
-                if (JSON_HEDLEY_UNLIKELY(get_token() != token_type::name_separator))
-                {
-                    return sax->parse_error(m_lexer.get_position(),
-                                            m_lexer.get_token_string(),
-                                            parse_error::create(101, m_lexer.get_position(), exception_message(token_type::name_separator, "object separator"), nullptr));
-                }
-
-                // parse values
-                get_token();
-                continue;
-            }
-
-            // closing }
-            if (JSON_HEDLEY_LIKELY(last_token == token_type::end_object))
-            {
-                if (JSON_HEDLEY_UNLIKELY(!sax->end_object()))
-                {
-                    return false;
-                }
-
-                // We are done with this object. Before we can parse a
-                // new value, we need to evaluate the new state first.
-                // By setting skip_to_state_evaluation to false, we
-                // are effectively jumping to the beginning of this if.
-                JSON_ASSERT(!states.empty());
-                states.pop_back();
-                skip_to_state_evaluation = true;
-                continue;
-            }
-
-            return sax->parse_error(m_lexer.get_position(),
-                                    m_lexer.get_token_string(),
-                                    parse_error::create(101, m_lexer.get_position(), exception_message(token_type::end_object, "object"), nullptr));
-        }
-    }
-
-    /// get next token from lexer
-    token_type get_token()
-    {
-        return last_token = m_lexer.scan();
-    }
-
-    std::string exception_message(const token_type expected, const std::string& context)
-    {
-        std::string error_msg = "syntax error ";
-
-        if (!context.empty())
-        {
-            error_msg += concat("while parsing ", context, ' ');
-        }
-
-        error_msg += "- ";
-
-        if (last_token == token_type::parse_error)
-        {
-            error_msg += concat(m_lexer.get_error_message(), "; last read: '",
-                                m_lexer.get_token_string(), '\'');
-        }
-        else
-        {
-            error_msg += concat("unexpected ", lexer_t::token_type_name(last_token));
-        }
-
-        if (expected != token_type::uninitialized)
-        {
-            error_msg += concat("; expected ", lexer_t::token_type_name(expected));
-        }
-
-        return error_msg;
-    }
-
-  private:
-    /// callback function
-    const parser_callback_t<BasicJsonType> callback = nullptr;
-    /// the type of the last read token
-    token_type last_token = token_type::uninitialized;
-    /// the lexer
-    lexer_t m_lexer;
-    /// whether to throw exceptions in case of errors
-    const bool allow_exceptions = true;
-};
-
-}  // namespace detail
-NLOHMANN_JSON_NAMESPACE_END
-
-// #include <nlohmann/detail/iterators/internal_iterator.hpp>
-//     __ _____ _____ _____
-//  __|  |   __|     |   | |  JSON for Modern C++
-// |  |  |__   |  |  | | | |  version 3.11.2
-// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
-//
-// SPDX-FileCopyrightText: 2013-2022 Niels Lohmann <https://nlohmann.me>
-// SPDX-License-Identifier: MIT
-
-
-
-// #include <nlohmann/detail/abi_macros.hpp>
-
-// #include <nlohmann/detail/iterators/primitive_iterator.hpp>
-//     __ _____ _____ _____
-//  __|  |   __|     |   | |  JSON for Modern C++
-// |  |  |__   |  |  | | | |  version 3.11.2
-// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
-//
-// SPDX-FileCopyrightText: 2013-2022 Niels Lohmann <https://nlohmann.me>
-// SPDX-License-Identifier: MIT
-
-
-
-#include <cstddef> // ptrdiff_t
-#include <limits>  // numeric_limits
-
-// #include <nlohmann/detail/macro_scope.hpp>
-
-
-NLOHMANN_JSON_NAMESPACE_BEGIN
-namespace detail
-{
-
-/*
-@brief an iterator for primitive JSON types
-
-This class models an iterator for primitive JSON types (boolean, number,
-string). It's only purpose is to allow the iterator/const_iterator classes
-to "iterate" over primitive values. Internally, the iterator is modeled by
-a `difference_type` variable. Value begin_value (`0`) models the begin,
-end_value (`1`) models past the end.
-*/
-class primitive_iterator_t
-{
-  private:
-    using difference_type = std::ptrdiff_t;
-    static constexpr difference_type begin_value = 0;
-    static constexpr difference_type end_value = begin_value + 1;
-
-  JSON_PRIVATE_UNLESS_TESTED:
-    /// iterator as signed integer type
-    difference_type m_it = (std::numeric_limits<std::ptrdiff_t>::min)();
-
-  public:
-    constexpr difference_type get_value() const noexcept
-    {
-        return m_it;
-    }
-
-    /// set iterator to a defined beginning
-    void set_begin() noexcept
-    {
-        m_it = begin_value;
-    }
-
-    /// set iterator to a defined past the end
-    void set_end() noexcept
-    {
-        m_it = end_value;
-    }
-
-    /// return whether the iterator can be dereferenced
-    constexpr bool is_begin() const noexcept
-    {
-        return m_it == begin_value;
-    }
-
-    /// return whether the iterator is at end
-    constexpr bool is_end() const noexcept
-    {
-        return m_it == end_value;
-    }
-
-    friend constexpr bool operator==(primitive_iterator_t lhs, primitive_iterator_t rhs) noexcept
-    {
-        return lhs.m_it == rhs.m_it;
-    }
-
-    friend constexpr bool operator<(primitive_iterator_t lhs, primitive_iterator_t rhs) noexcept
-    {
-        return lhs.m_it < rhs.m_it;
-    }
-
-    primitive_iterator_t operator+(difference_type n) noexcept
-    {
-        auto result = *this;
-        result += n;
-        return result;
-    }
-
-    friend constexpr difference_type operator-(primitive_iterator_t lhs, primitive_iterator_t rhs) noexcept
-    {
-        return lhs.m_it - rhs.m_it;
-    }
-
-    primitive_iterator_t& operator++() noexcept
-    {
-        ++m_it;
-        return *this;
-    }
-
-    primitive_iterator_t operator++(int)& noexcept // NOLINT(cert-dcl21-cpp)
-    {
-        auto result = *this;
-        ++m_it;
-        return result;
-    }
-
-    primitive_iterator_t& operator--() noexcept
-    {
-        --m_it;
-        return *this;
-    }
-
-    primitive_iterator_t operator--(int)& noexcept // NOLINT(cert-dcl21-cpp)
-    {
-        auto result = *this;
-        --m_it;
-        return result;
-    }
-
-    primitive_iterator_t& operator+=(difference_type n) noexcept
-    {
-        m_it += n;
-        return *this;
-    }
-
-    primitive_iterator_t& operator-=(difference_type n) noexcept
-    {
-        m_it -= n;
-        return *this;
-    }
-};
-
-}  // namespace detail
-NLOHMANN_JSON_NAMESPACE_END
-
-
-NLOHMANN_JSON_NAMESPACE_BEGIN
-namespace detail
-{
-
-/*!
-@brief an iterator value
-
-@note This structure could easily be a union, but MSVC currently does not allow
-unions members with complex constructors, see https://github.com/nlohmann/json/pull/105.
-*/
-template<typename BasicJsonType> struct internal_iterator
-{
-    /// iterator for JSON objects
-    typename BasicJsonType::object_t::iterator object_iterator {};
-    /// iterator for JSON arrays
-    typename BasicJsonType::array_t::iterator array_iterator {};
-    /// generic iterator for all other types
-    primitive_iterator_t primitive_iterator {};
-};
-
-}  // namespace detail
-NLOHMANN_JSON_NAMESPACE_END
-
-// #include <nlohmann/detail/iterators/iter_impl.hpp>
-//     __ _____ _____ _____
-//  __|  |   __|     |   | |  JSON for Modern C++
-// |  |  |__   |  |  | | | |  version 3.11.2
-// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
-//
-// SPDX-FileCopyrightText: 2013-2022 Niels Lohmann <https://nlohmann.me>
-// SPDX-License-Identifier: MIT
-
-
-
-#include <iterator> // iterator, random_access_iterator_tag, bidirectional_iterator_tag, advance, next
-#include <type_traits> // conditional, is_const, remove_const
-
-// #include <nlohmann/detail/exceptions.hpp>
-
-// #include <nlohmann/detail/iterators/internal_iterator.hpp>
-
-// #include <nlohmann/detail/iterators/primitive_iterator.hpp>
-
-// #include <nlohmann/detail/macro_scope.hpp>
-
-// #include <nlohmann/detail/meta/cpp_future.hpp>
-
-// #include <nlohmann/detail/meta/type_traits.hpp>
-
-// #include <nlohmann/detail/value_t.hpp>
-
-
-NLOHMANN_JSON_NAMESPACE_BEGIN
-namespace detail
-{
-
-// forward declare, to be able to friend it later on
-template<typename IteratorType> class iteration_proxy;
-template<typename IteratorType> class iteration_proxy_value;
-
-/*!
-@brief a template for a bidirectional iterator for the @ref basic_json class
-This class implements a both iterators (iterator and const_iterator) for the
-@ref basic_json class.
-@note An iterator is called *initialized* when a pointer to a JSON value has
-      been set (e.g., by a constructor or a copy assignment). If the iterator is
-      default-constructed, it is *uninitialized* and most methods are undefined.
-      **The library uses assertions to detect calls on uninitialized iterators.**
-@requirement The class satisfies the following concept requirements:
--
-[BidirectionalIterator](https://en.cppreference.com/w/cpp/named_req/BidirectionalIterator):
-  The iterator that can be moved can be moved in both directions (i.e.
-  incremented and decremented).
-@since version 1.0.0, simplified in version 2.0.9, change to bidirectional
-       iterators in version 3.0.0 (see https://github.com/nlohmann/json/issues/593)
-*/
-template<typename BasicJsonType>
-class iter_impl // NOLINT(cppcoreguidelines-special-member-functions,hicpp-special-member-functions)
-{
-    /// the iterator with BasicJsonType of different const-ness
-    using other_iter_impl = iter_impl<typename std::conditional<std::is_const<BasicJsonType>::value, typename std::remove_const<BasicJsonType>::type, const BasicJsonType>::type>;
-    /// allow basic_json to access private members
-    friend other_iter_impl;
-    friend BasicJsonType;
-    friend iteration_proxy<iter_impl>;
-    friend iteration_proxy_value<iter_impl>;
-
-    using object_t = typename BasicJsonType::object_t;
-    using array_t = typename BasicJsonType::array_t;
-    // make sure BasicJsonType is basic_json or const basic_json
-    static_assert(is_basic_json<typename std::remove_const<BasicJsonType>::type>::value,
-                  "iter_impl only accepts (const) basic_json");
-    // superficial check for the LegacyBidirectionalIterator named requirement
-    static_assert(std::is_base_of<std::bidirectional_iterator_tag, std::bidirectional_iterator_tag>::value
-                  &&  std::is_base_of<std::bidirectional_iterator_tag, typename std::iterator_traits<typename array_t::iterator>::iterator_category>::value,
-                  "basic_json iterator assumes array and object type iterators satisfy the LegacyBidirectionalIterator named requirement.");
-
-  public:
-    /// The std::iterator class template (used as a base class to provide typedefs) is deprecated in C++17.
-    /// The C++ Standard has never required user-defined iterators to derive from std::iterator.
-    /// A user-defined iterator should provide publicly accessible typedefs named
-    /// iterator_category, value_type, difference_type, pointer, and reference.
-    /// Note that value_type is required to be non-const, even for constant iterators.
-    using iterator_category = std::bidirectional_iterator_tag;
-
-    /// the type of the values when the iterator is dereferenced
-    using value_type = typename BasicJsonType::value_type;
-    /// a type to represent differences between iterators
-    using difference_type = typename BasicJsonType::difference_type;
-    /// defines a pointer to the type iterated over (value_type)
-    using pointer = typename std::conditional<std::is_const<BasicJsonType>::value,
-          typename BasicJsonType::const_pointer,
-          typename BasicJsonType::pointer>::type;
-    /// defines a reference to the type iterated over (value_type)
-    using reference =
-        typename std::conditional<std::is_const<BasicJsonType>::value,
-        typename BasicJsonType::const_reference,
-        typename BasicJsonType::reference>::type;
-
-    iter_impl() = default;
-    ~iter_impl() = default;
-    iter_impl(iter_impl&&) noexcept = default;
-    iter_impl& operator=(iter_impl&&) noexcept = default;
-
-    /*!
-    @brief constructor for a given JSON instance
-    @param[in] object  pointer to a JSON object for this iterator
-    @pre object != nullptr
-    @post The iterator is initialized; i.e. `m_object != nullptr`.
-    */
-    explicit iter_impl(pointer object) noexcept : m_object(object)
-    {
-        JSON_ASSERT(m_object != nullptr);
-
-        switch (m_object->m_data.m_type)
-        {
-            case value_t::object:
-            {
-                m_it.object_iterator = typename object_t::iterator();
-                break;
-            }
-
-            case value_t::array:
-            {
-                m_it.array_iterator = typename array_t::iterator();
-                break;
-            }
-
-            case value_t::null:
-            case value_t::string:
-            case value_t::boolean:
-            case value_t::number_integer:
-            case value_t::number_unsigned:
-            case value_t::number_float:
-            case value_t::binary:
-            case value_t::discarded:
-            default:
-            {
-                m_it.primitive_iterator = primitive_iterator_t();
-                break;
-            }
-        }
-    }
-
-    /*!
-    @note The conventional copy constructor and copy assignment are implicitly
-          defined. Combined with the following converting constructor and
-          assignment, they support: (1) copy from iterator to iterator, (2)
-          copy from const iterator to const iterator, and (3) conversion from
-          iterator to const iterator. However conversion from const iterator
-          to iterator is not defined.
-    */
-
-    /*!
-    @brief const copy constructor
-    @param[in] other const iterator to copy from
-    @note This copy constructor had to be defined explicitly to circumvent a bug
-          occurring on msvc v19.0 compiler (VS 2015) debug build. For more
-          information refer to: https://github.com/nlohmann/json/issues/1608
-    */
-    iter_impl(const iter_impl<const BasicJsonType>& other) noexcept
-        : m_object(other.m_object), m_it(other.m_it)
-    {}
-
-    /*!
-    @brief converting assignment
-    @param[in] other const iterator to copy from
-    @return const/non-const iterator
-    @note It is not checked whether @a other is initialized.
-    */
-    iter_impl& operator=(const iter_impl<const BasicJsonType>& other) noexcept
-    {
-        if (&other != this)
-        {
-            m_object = other.m_object;
-            m_it = other.m_it;
-        }
-        return *this;
-    }
-
-    /*!
-    @brief converting constructor
-    @param[in] other  non-const iterator to copy from
-    @note It is not checked whether @a other is initialized.
-    */
-    iter_impl(const iter_impl<typename std::remove_const<BasicJsonType>::type>& other) noexcept
-        : m_object(other.m_object), m_it(other.m_it)
-    {}
-
-    /*!
-    @brief converting assignment
-    @param[in] other  non-const iterator to copy from
-    @return const/non-const iterator
-    @note It is not checked whether @a other is initialized.
-    */
-    iter_impl& operator=(const iter_impl<typename std::remove_const<BasicJsonType>::type>& other) noexcept // NOLINT(cert-oop54-cpp)
-    {
-        m_object = other.m_object;
-        m_it = other.m_it;
-        return *this;
-    }
-
-  JSON_PRIVATE_UNLESS_TESTED:
-    /*!
-    @brief set the iterator to the first value
-    @pre The iterator is initialized; i.e. `m_object != nullptr`.
-    */
-    void set_begin() noexcept
-    {
-        JSON_ASSERT(m_object != nullptr);
-
-        switch (m_object->m_data.m_type)
-        {
-            case value_t::object:
-            {
-                m_it.object_iterator = m_object->m_data.m_value.object->begin();
-                break;
-            }
-
-            case value_t::array:
-            {
-                m_it.array_iterator = m_object->m_data.m_value.array->begin();
-                break;
-            }
-
-            case value_t::null:
-            {
-                // set to end so begin()==end() is true: null is empty
-                m_it.primitive_iterator.set_end();
-                break;
-            }
-
-            case value_t::string:
-            case value_t::boolean:
-            case value_t::number_integer:
-            case value_t::number_unsigned:
-            case value_t::number_float:
-            case value_t::binary:
-            case value_t::discarded:
-            default:
-            {
-                m_it.primitive_iterator.set_begin();
-                break;
-            }
-        }
-    }
-
-    /*!
-    @brief set the iterator past the last value
-    @pre The iterator is initialized; i.e. `m_object != nullptr`.
-    */
-    void set_end() noexcept
-    {
-        JSON_ASSERT(m_object != nullptr);
-
-        switch (m_object->m_data.m_type)
-        {
-            case value_t::object:
-            {
-                m_it.object_iterator = m_object->m_data.m_value.object->end();
-                break;
-            }
-
-            case value_t::array:
-            {
-                m_it.array_iterator = m_object->m_data.m_value.array->end();
-                break;
-            }
-
-            case value_t::null:
-            case value_t::string:
-            case value_t::boolean:
-            case value_t::number_integer:
-            case value_t::number_unsigned:
-            case value_t::number_float:
-            case value_t::binary:
-            case value_t::discarded:
-            default:
-            {
-                m_it.primitive_iterator.set_end();
-                break;
-            }
-        }
-    }
-
-  public:
-    /*!
-    @brief return a reference to the value pointed to by the iterator
-    @pre The iterator is initialized; i.e. `m_object != nullptr`.
-    */
-    reference operator*() const
-    {
-        JSON_ASSERT(m_object != nullptr);
-
-        switch (m_object->m_data.m_type)
-        {
-            case value_t::object:
-            {
-                JSON_ASSERT(m_it.object_iterator != m_object->m_data.m_value.object->end());
-                return m_it.object_iterator->second;
-            }
-
-            case value_t::array:
-            {
-                JSON_ASSERT(m_it.array_iterator != m_object->m_data.m_value.array->end());
-                return *m_it.array_iterator;
-            }
-
-            case value_t::null:
-                JSON_THROW(invalid_iterator::create(214, "cannot get value", m_object));
-
-            case value_t::string:
-            case value_t::boolean:
-            case value_t::number_integer:
-            case value_t::number_unsigned:
-            case value_t::number_float:
-            case value_t::binary:
-            case value_t::discarded:
-            default:
-            {
-                if (JSON_HEDLEY_LIKELY(m_it.primitive_iterator.is_begin()))
-                {
-                    return *m_object;
-                }
-
-                JSON_THROW(invalid_iterator::create(214, "cannot get value", m_object));
-            }
-        }
-    }
-
-    /*!
-    @brief dereference the iterator
-    @pre The iterator is initialized; i.e. `m_object != nullptr`.
-    */
-    pointer operator->() const
-    {
-        JSON_ASSERT(m_object != nullptr);
-
-        switch (m_object->m_data.m_type)
-        {
-            case value_t::object:
-            {
-                JSON_ASSERT(m_it.object_iterator != m_object->m_data.m_value.object->end());
-                return &(m_it.object_iterator->second);
-            }
-
-            case value_t::array:
-            {
-                JSON_ASSERT(m_it.array_iterator != m_object->m_data.m_value.array->end());
-                return &*m_it.array_iterator;
-            }
-
-            case value_t::null:
-            case value_t::string:
-            case value_t::boolean:
-            case value_t::number_integer:
-            case value_t::number_unsigned:
-            case value_t::number_float:
-            case value_t::binary:
-            case value_t::discarded:
-            default:
-            {
-                if (JSON_HEDLEY_LIKELY(m_it.primitive_iterator.is_begin()))
-                {
-                    return m_object;
-                }
-
-                JSON_THROW(invalid_iterator::create(214, "cannot get value", m_object));
-            }
-        }
-    }
-
-    /*!
-    @brief post-increment (it++)
-    @pre The iterator is initialized; i.e. `m_object != nullptr`.
-    */
-    iter_impl operator++(int)& // NOLINT(cert-dcl21-cpp)
-    {
-        auto result = *this;
-        ++(*this);
-        return result;
-    }
-
-    /*!
-    @brief pre-increment (++it)
-    @pre The iterator is initialized; i.e. `m_object != nullptr`.
-    */
-    iter_impl& operator++()
-    {
-        JSON_ASSERT(m_object != nullptr);
-
-        switch (m_object->m_data.m_type)
-        {
-            case value_t::object:
-            {
-                std::advance(m_it.object_iterator, 1);
-                break;
-            }
-
-            case value_t::array:
-            {
-                std::advance(m_it.array_iterator, 1);
-                break;
-            }
-
-            case value_t::null:
-            case value_t::string:
-            case value_t::boolean:
-            case value_t::number_integer:
-            case value_t::number_unsigned:
-            case value_t::number_float:
-            case value_t::binary:
-            case value_t::discarded:
-            default:
-            {
-                ++m_it.primitive_iterator;
-                break;
-            }
-        }
-
-        return *this;
-    }
-
-    /*!
-    @brief post-decrement (it--)
-    @pre The iterator is initialized; i.e. `m_object != nullptr`.
-    */
-    iter_impl operator--(int)& // NOLINT(cert-dcl21-cpp)
-    {
-        auto result = *this;
-        --(*this);
-        return result;
-    }
-
-    /*!
-    @brief pre-decrement (--it)
-    @pre The iterator is initialized; i.e. `m_object != nullptr`.
-    */
-    iter_impl& operator--()
-    {
-        JSON_ASSERT(m_object != nullptr);
-
-        switch (m_object->m_data.m_type)
-        {
-            case value_t::object:
-            {
-                std::advance(m_it.object_iterator, -1);
-                break;
-            }
-
-            case value_t::array:
-            {
-                std::advance(m_it.array_iterator, -1);
-                break;
-            }
-
-            case value_t::null:
-            case value_t::string:
-            case value_t::boolean:
-            case value_t::number_integer:
-            case value_t::number_unsigned:
-            case value_t::number_float:
-            case value_t::binary:
-            case value_t::discarded:
-            default:
-            {
-                --m_it.primitive_iterator;
-                break;
-            }
-        }
-
-        return *this;
-    }
-
-    /*!
-    @brief comparison: equal
-    @pre The iterator is initialized; i.e. `m_object != nullptr`.
-    */
-    template < typename IterImpl, detail::enable_if_t < (std::is_same<IterImpl, iter_impl>::value || std::is_same<IterImpl, other_iter_impl>::value), std::nullptr_t > = nullptr >
-    bool operator==(const IterImpl& other) const
-    {
-        // if objects are not the same, the comparison is undefined
-        if (JSON_HEDLEY_UNLIKELY(m_object != other.m_object))
-        {
-            JSON_THROW(invalid_iterator::create(212, "cannot compare iterators of different containers", m_object));
-        }
-
-        JSON_ASSERT(m_object != nullptr);
-
-        switch (m_object->m_data.m_type)
-        {
-            case value_t::object:
-                return (m_it.object_iterator == other.m_it.object_iterator);
-
-            case value_t::array:
-                return (m_it.array_iterator == other.m_it.array_iterator);
-
-            case value_t::null:
-            case value_t::string:
-            case value_t::boolean:
-            case value_t::number_integer:
-            case value_t::number_unsigned:
-            case value_t::number_float:
-            case value_t::binary:
-            case value_t::discarded:
-            default:
-                return (m_it.primitive_iterator == other.m_it.primitive_iterator);
-        }
-    }
-
-    /*!
-    @brief comparison: not equal
-    @pre The iterator is initialized; i.e. `m_object != nullptr`.
-    */
-    template < typename IterImpl, detail::enable_if_t < (std::is_same<IterImpl, iter_impl>::value || std::is_same<IterImpl, other_iter_impl>::value), std::nullptr_t > = nullptr >
-    bool operator!=(const IterImpl& other) const
-    {
-        return !operator==(other);
-    }
-
-    /*!
-    @brief comparison: smaller
-    @pre The iterator is initialized; i.e. `m_object != nullptr`.
-    */
-    bool operator<(const iter_impl& other) const
-    {
-        // if objects are not the same, the comparison is undefined
-        if (JSON_HEDLEY_UNLIKELY(m_object != other.m_object))
-        {
-            JSON_THROW(invalid_iterator::create(212, "cannot compare iterators of different containers", m_object));
-        }
-
-        JSON_ASSERT(m_object != nullptr);
-
-        switch (m_object->m_data.m_type)
-        {
-            case value_t::object:
-                JSON_THROW(invalid_iterator::create(213, "cannot compare order of object iterators", m_object));
-
-            case value_t::array:
-                return (m_it.array_iterator < other.m_it.array_iterator);
-
-            case value_t::null:
-            case value_t::string:
-            case value_t::boolean:
-            case value_t::number_integer:
-            case value_t::number_unsigned:
-            case value_t::number_float:
-            case value_t::binary:
-            case value_t::discarded:
-            default:
-                return (m_it.primitive_iterator < other.m_it.primitive_iterator);
-        }
-    }
-
-    /*!
-    @brief comparison: less than or equal
-    @pre The iterator is initialized; i.e. `m_object != nullptr`.
-    */
-    bool operator<=(const iter_impl& other) const
-    {
-        return !other.operator < (*this);
-    }
-
-    /*!
-    @brief comparison: greater than
-    @pre The iterator is initialized; i.e. `m_object != nullptr`.
-    */
-    bool operator>(const iter_impl& other) const
-    {
-        return !operator<=(other);
-    }
-
-    /*!
-    @brief comparison: greater than or equal
-    @pre The iterator is initialized; i.e. `m_object != nullptr`.
-    */
-    bool operator>=(const iter_impl& other) const
-    {
-        return !operator<(other);
-    }
-
-    /*!
-    @brief add to iterator
-    @pre The iterator is initialized; i.e. `m_object != nullptr`.
-    */
-    iter_impl& operator+=(difference_type i)
-    {
-        JSON_ASSERT(m_object != nullptr);
-
-        switch (m_object->m_data.m_type)
-        {
-            case value_t::object:
-                JSON_THROW(invalid_iterator::create(209, "cannot use offsets with object iterators", m_object));
-
-            case value_t::array:
-            {
-                std::advance(m_it.array_iterator, i);
-                break;
-            }
-
-            case value_t::null:
-            case value_t::string:
-            case value_t::boolean:
-            case value_t::number_integer:
-            case value_t::number_unsigned:
-            case value_t::number_float:
-            case value_t::binary:
-            case value_t::discarded:
-            default:
-            {
-                m_it.primitive_iterator += i;
-                break;
-            }
-        }
-
-        return *this;
-    }
-
-    /*!
-    @brief subtract from iterator
-    @pre The iterator is initialized; i.e. `m_object != nullptr`.
-    */
-    iter_impl& operator-=(difference_type i)
-    {
-        return operator+=(-i);
-    }
-
-    /*!
-    @brief add to iterator
-    @pre The iterator is initialized; i.e. `m_object != nullptr`.
-    */
-    iter_impl operator+(difference_type i) const
-    {
-        auto result = *this;
-        result += i;
-        return result;
-    }
-
-    /*!
-    @brief addition of distance and iterator
-    @pre The iterator is initialized; i.e. `m_object != nullptr`.
-    */
-    friend iter_impl operator+(difference_type i, const iter_impl& it)
-    {
-        auto result = it;
-        result += i;
-        return result;
-    }
-
-    /*!
-    @brief subtract from iterator
-    @pre The iterator is initialized; i.e. `m_object != nullptr`.
-    */
-    iter_impl operator-(difference_type i) const
-    {
-        auto result = *this;
-        result -= i;
-        return result;
-    }
-
-    /*!
-    @brief return difference
-    @pre The iterator is initialized; i.e. `m_object != nullptr`.
-    */
-    difference_type operator-(const iter_impl& other) const
-    {
-        JSON_ASSERT(m_object != nullptr);
-
-        switch (m_object->m_data.m_type)
-        {
-            case value_t::object:
-                JSON_THROW(invalid_iterator::create(209, "cannot use offsets with object iterators", m_object));
-
-            case value_t::array:
-                return m_it.array_iterator - other.m_it.array_iterator;
-
-            case value_t::null:
-            case value_t::string:
-            case value_t::boolean:
-            case value_t::number_integer:
-            case value_t::number_unsigned:
-            case value_t::number_float:
-            case value_t::binary:
-            case value_t::discarded:
-            default:
-                return m_it.primitive_iterator - other.m_it.primitive_iterator;
-        }
-    }
-
-    /*!
-    @brief access to successor
-    @pre The iterator is initialized; i.e. `m_object != nullptr`.
-    */
-    reference operator[](difference_type n) const
-    {
-        JSON_ASSERT(m_object != nullptr);
-
-        switch (m_object->m_data.m_type)
-        {
-            case value_t::object:
-                JSON_THROW(invalid_iterator::create(208, "cannot use operator[] for object iterators", m_object));
-
-            case value_t::array:
-                return *std::next(m_it.array_iterator, n);
-
-            case value_t::null:
-                JSON_THROW(invalid_iterator::create(214, "cannot get value", m_object));
-
-            case value_t::string:
-            case value_t::boolean:
-            case value_t::number_integer:
-            case value_t::number_unsigned:
-            case value_t::number_float:
-            case value_t::binary:
-            case value_t::discarded:
-            default:
-            {
-                if (JSON_HEDLEY_LIKELY(m_it.primitive_iterator.get_value() == -n))
-                {
-                    return *m_object;
-                }
-
-                JSON_THROW(invalid_iterator::create(214, "cannot get value", m_object));
-            }
-        }
-    }
-
-    /*!
-    @brief return the key of an object iterator
-    @pre The iterator is initialized; i.e. `m_object != nullptr`.
-    */
-    const typename object_t::key_type& key() const
-    {
-        JSON_ASSERT(m_object != nullptr);
-
-        if (JSON_HEDLEY_LIKELY(m_object->is_object()))
-        {
-            return m_it.object_iterator->first;
-        }
-
-        JSON_THROW(invalid_iterator::create(207, "cannot use key() for non-object iterators", m_object));
-    }
-
-    /*!
-    @brief return the value of an iterator
-    @pre The iterator is initialized; i.e. `m_object != nullptr`.
-    */
-    reference value() const
-    {
-        return operator*();
-    }
-
-  JSON_PRIVATE_UNLESS_TESTED:
-    /// associated JSON instance
-    pointer m_object = nullptr;
-    /// the actual iterator of the associated instance
-    internal_iterator<typename std::remove_const<BasicJsonType>::type> m_it {};
-};
-
-}  // namespace detail
-NLOHMANN_JSON_NAMESPACE_END
-
-// #include <nlohmann/detail/iterators/iteration_proxy.hpp>
-
-// #include <nlohmann/detail/iterators/json_reverse_iterator.hpp>
-//     __ _____ _____ _____
-//  __|  |   __|     |   | |  JSON for Modern C++
-// |  |  |__   |  |  | | | |  version 3.11.2
-// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
-//
-// SPDX-FileCopyrightText: 2013-2022 Niels Lohmann <https://nlohmann.me>
-// SPDX-License-Identifier: MIT
-
-
-
-#include <cstddef> // ptrdiff_t
-#include <iterator> // reverse_iterator
-#include <utility> // declval
-
-// #include <nlohmann/detail/abi_macros.hpp>
-
-
-NLOHMANN_JSON_NAMESPACE_BEGIN
-namespace detail
-{
-
-//////////////////////
-// reverse_iterator //
-//////////////////////
-
-/*!
-@brief a template for a reverse iterator class
-
-@tparam Base the base iterator type to reverse. Valid types are @ref
-iterator (to create @ref reverse_iterator) and @ref const_iterator (to
-create @ref const_reverse_iterator).
-
-@requirement The class satisfies the following concept requirements:
--
-[BidirectionalIterator](https://en.cppreference.com/w/cpp/named_req/BidirectionalIterator):
-  The iterator that can be moved can be moved in both directions (i.e.
-  incremented and decremented).
-- [OutputIterator](https://en.cppreference.com/w/cpp/named_req/OutputIterator):
-  It is possible to write to the pointed-to element (only if @a Base is
-  @ref iterator).
-
-@since version 1.0.0
-*/
-template<typename Base>
-class json_reverse_iterator : public std::reverse_iterator<Base>
-{
-  public:
-    using difference_type = std::ptrdiff_t;
-    /// shortcut to the reverse iterator adapter
-    using base_iterator = std::reverse_iterator<Base>;
-    /// the reference type for the pointed-to element
-    using reference = typename Base::reference;
-
-    /// create reverse iterator from iterator
-    explicit json_reverse_iterator(const typename base_iterator::iterator_type& it) noexcept
-        : base_iterator(it) {}
-
-    /// create reverse iterator from base class
-    explicit json_reverse_iterator(const base_iterator& it) noexcept : base_iterator(it) {}
-
-    /// post-increment (it++)
-    json_reverse_iterator operator++(int)& // NOLINT(cert-dcl21-cpp)
-    {
-        return static_cast<json_reverse_iterator>(base_iterator::operator++(1));
-    }
-
-    /// pre-increment (++it)
-    json_reverse_iterator& operator++()
-    {
-        return static_cast<json_reverse_iterator&>(base_iterator::operator++());
-    }
-
-    /// post-decrement (it--)
-    json_reverse_iterator operator--(int)& // NOLINT(cert-dcl21-cpp)
-    {
-        return static_cast<json_reverse_iterator>(base_iterator::operator--(1));
-    }
-
-    /// pre-decrement (--it)
-    json_reverse_iterator& operator--()
-    {
-        return static_cast<json_reverse_iterator&>(base_iterator::operator--());
-    }
-
-    /// add to iterator
-    json_reverse_iterator& operator+=(difference_type i)
-    {
-        return static_cast<json_reverse_iterator&>(base_iterator::operator+=(i));
-    }
-
-    /// add to iterator
-    json_reverse_iterator operator+(difference_type i) const
-    {
-        return static_cast<json_reverse_iterator>(base_iterator::operator+(i));
-    }
-
-    /// subtract from iterator
-    json_reverse_iterator operator-(difference_type i) const
-    {
-        return static_cast<json_reverse_iterator>(base_iterator::operator-(i));
-    }
-
-    /// return difference
-    difference_type operator-(const json_reverse_iterator& other) const
-    {
-        return base_iterator(*this) - base_iterator(other);
-    }
-
-    /// access to successor
-    reference operator[](difference_type n) const
-    {
-        return *(this->operator+(n));
-    }
-
-    /// return the key of an object iterator
-    auto key() const -> decltype(std::declval<Base>().key())
-    {
-        auto it = --this->base();
-        return it.key();
-    }
-
-    /// return the value of an iterator
-    reference value() const
-    {
-        auto it = --this->base();
-        return it.operator * ();
-    }
-};
-
-}  // namespace detail
-NLOHMANN_JSON_NAMESPACE_END
-
-// #include <nlohmann/detail/iterators/primitive_iterator.hpp>
-
-// #include <nlohmann/detail/json_custom_base_class.hpp>
-
-
-#include <type_traits> // conditional, is_same
-
-// #include <nlohmann/detail/abi_macros.hpp>
-
-
-NLOHMANN_JSON_NAMESPACE_BEGIN
-namespace detail
-{
-
-/*!
-@brief Default base class of the @ref basic_json class.
-
-So that the correct implementations of the copy / move ctors / assign operators
-of @ref basic_json do not require complex case distinctions
-(no base class / custom base class used as customization point),
-@ref basic_json always has a base class.
-By default, this class is used because it is empty and thus has no effect
-on the behavior of @ref basic_json.
-*/
-struct json_default_base {};
-
-template<class T>
-using json_base_class = typename std::conditional <
-                        std::is_same<T, void>::value,
-                        json_default_base,
-                        T
-                        >::type;
-
-}  // namespace detail
-NLOHMANN_JSON_NAMESPACE_END
-
-// #include <nlohmann/detail/json_pointer.hpp>
-//     __ _____ _____ _____
-//  __|  |   __|     |   | |  JSON for Modern C++
-// |  |  |__   |  |  | | | |  version 3.11.2
-// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
-//
-// SPDX-FileCopyrightText: 2013-2022 Niels Lohmann <https://nlohmann.me>
-// SPDX-License-Identifier: MIT
-
-
-
-#include <algorithm> // all_of
-#include <cctype> // isdigit
-#include <cerrno> // errno, ERANGE
-#include <cstdlib> // strtoull
-#ifndef JSON_NO_IO
-    #include <iosfwd> // ostream
-#endif  // JSON_NO_IO
-#include <limits> // max
-#include <numeric> // accumulate
-#include <string> // string
-#include <utility> // move
-#include <vector> // vector
-
-// #include <nlohmann/detail/exceptions.hpp>
-
-// #include <nlohmann/detail/macro_scope.hpp>
-
-// #include <nlohmann/detail/string_concat.hpp>
-
-// #include <nlohmann/detail/string_escape.hpp>
-
-// #include <nlohmann/detail/value_t.hpp>
-
-
-NLOHMANN_JSON_NAMESPACE_BEGIN
-
-/// @brief JSON Pointer defines a string syntax for identifying a specific value within a JSON document
-/// @sa https://json.nlohmann.me/api/json_pointer/
-template<typename RefStringType>
-class json_pointer
-{
-    // allow basic_json to access private members
-    NLOHMANN_BASIC_JSON_TPL_DECLARATION
-    friend class basic_json;
-
-    template<typename>
-    friend class json_pointer;
-
-    template<typename T>
-    struct string_t_helper
-    {
-        using type = T;
-    };
-
-    NLOHMANN_BASIC_JSON_TPL_DECLARATION
-    struct string_t_helper<NLOHMANN_BASIC_JSON_TPL>
-    {
-        using type = StringType;
-    };
-
-  public:
-    // for backwards compatibility accept BasicJsonType
-    using string_t = typename string_t_helper<RefStringType>::type;
-
-    /// @brief create JSON pointer
-    /// @sa https://json.nlohmann.me/api/json_pointer/json_pointer/
-    explicit json_pointer(const string_t& s = "")
-        : reference_tokens(split(s))
-    {}
-
-    /// @brief return a string representation of the JSON pointer
-    /// @sa https://json.nlohmann.me/api/json_pointer/to_string/
-    string_t to_string() const
-    {
-        return std::accumulate(reference_tokens.begin(), reference_tokens.end(),
-                               string_t{},
-                               [](const string_t& a, const string_t& b)
-        {
-            return detail::concat(a, '/', detail::escape(b));
-        });
-    }
-
-    /// @brief return a string representation of the JSON pointer
-    /// @sa https://json.nlohmann.me/api/json_pointer/operator_string/
-    JSON_HEDLEY_DEPRECATED_FOR(3.11.0, to_string())
-    operator string_t() const
-    {
-        return to_string();
-    }
-
-#ifndef JSON_NO_IO
-    /// @brief write string representation of the JSON pointer to stream
-    /// @sa https://json.nlohmann.me/api/basic_json/operator_ltlt/
-    friend std::ostream& operator<<(std::ostream& o, const json_pointer& ptr)
-    {
-        o << ptr.to_string();
-        return o;
-    }
-#endif
-
-    /// @brief append another JSON pointer at the end of this JSON pointer
-    /// @sa https://json.nlohmann.me/api/json_pointer/operator_slasheq/
-    json_pointer& operator/=(const json_pointer& ptr)
-    {
-        reference_tokens.insert(reference_tokens.end(),
-                                ptr.reference_tokens.begin(),
-                                ptr.reference_tokens.end());
-        return *this;
-    }
-
-    /// @brief append an unescaped reference token at the end of this JSON pointer
-    /// @sa https://json.nlohmann.me/api/json_pointer/operator_slasheq/
-    json_pointer& operator/=(string_t token)
-    {
-        push_back(std::move(token));
-        return *this;
-    }
-
-    /// @brief append an array index at the end of this JSON pointer
-    /// @sa https://json.nlohmann.me/api/json_pointer/operator_slasheq/
-    json_pointer& operator/=(std::size_t array_idx)
-    {
-        return *this /= std::to_string(array_idx);
-    }
-
-    /// @brief create a new JSON pointer by appending the right JSON pointer at the end of the left JSON pointer
-    /// @sa https://json.nlohmann.me/api/json_pointer/operator_slash/
-    friend json_pointer operator/(const json_pointer& lhs,
-                                  const json_pointer& rhs)
-    {
-        return json_pointer(lhs) /= rhs;
-    }
-
-    /// @brief create a new JSON pointer by appending the unescaped token at the end of the JSON pointer
-    /// @sa https://json.nlohmann.me/api/json_pointer/operator_slash/
-    friend json_pointer operator/(const json_pointer& lhs, string_t token) // NOLINT(performance-unnecessary-value-param)
-    {
-        return json_pointer(lhs) /= std::move(token);
-    }
-
-    /// @brief create a new JSON pointer by appending the array-index-token at the end of the JSON pointer
-    /// @sa https://json.nlohmann.me/api/json_pointer/operator_slash/
-    friend json_pointer operator/(const json_pointer& lhs, std::size_t array_idx)
-    {
-        return json_pointer(lhs) /= array_idx;
-    }
-
-    /// @brief returns the parent of this JSON pointer
-    /// @sa https://json.nlohmann.me/api/json_pointer/parent_pointer/
-    json_pointer parent_pointer() const
-    {
-        if (empty())
-        {
-            return *this;
-        }
-
-        json_pointer res = *this;
-        res.pop_back();
-        return res;
-    }
-
-    /// @brief remove last reference token
-    /// @sa https://json.nlohmann.me/api/json_pointer/pop_back/
-    void pop_back()
-    {
-        if (JSON_HEDLEY_UNLIKELY(empty()))
-        {
-            JSON_THROW(detail::out_of_range::create(405, "JSON pointer has no parent", nullptr));
-        }
-
-        reference_tokens.pop_back();
-    }
-
-    /// @brief return last reference token
-    /// @sa https://json.nlohmann.me/api/json_pointer/back/
-    const string_t& back() const
-    {
-        if (JSON_HEDLEY_UNLIKELY(empty()))
-        {
-            JSON_THROW(detail::out_of_range::create(405, "JSON pointer has no parent", nullptr));
-        }
-
-        return reference_tokens.back();
-    }
-
-    /// @brief append an unescaped token at the end of the reference pointer
-    /// @sa https://json.nlohmann.me/api/json_pointer/push_back/
-    void push_back(const string_t& token)
-    {
-        reference_tokens.push_back(token);
-    }
-
-    /// @brief append an unescaped token at the end of the reference pointer
-    /// @sa https://json.nlohmann.me/api/json_pointer/push_back/
-    void push_back(string_t&& token)
-    {
-        reference_tokens.push_back(std::move(token));
-    }
-
-    /// @brief return whether pointer points to the root document
-    /// @sa https://json.nlohmann.me/api/json_pointer/empty/
-    bool empty() const noexcept
-    {
-        return reference_tokens.empty();
-    }
-
-  private:
-    /*!
-    @param[in] s  reference token to be converted into an array index
-
-    @return integer representation of @a s
-
-    @throw parse_error.106  if an array index begins with '0'
-    @throw parse_error.109  if an array index begins not with a digit
-    @throw out_of_range.404 if string @a s could not be converted to an integer
-    @throw out_of_range.410 if an array index exceeds size_type
-    */
-    template<typename BasicJsonType>
-    static typename BasicJsonType::size_type array_index(const string_t& s)
-    {
-        using size_type = typename BasicJsonType::size_type;
-
-        // error condition (cf. RFC 6901, Sect. 4)
-        if (JSON_HEDLEY_UNLIKELY(s.size() > 1 && s[0] == '0'))
-        {
-            JSON_THROW(detail::parse_error::create(106, 0, detail::concat("array index '", s, "' must not begin with '0'"), nullptr));
-        }
-
-        // error condition (cf. RFC 6901, Sect. 4)
-        if (JSON_HEDLEY_UNLIKELY(s.size() > 1 && !(s[0] >= '1' && s[0] <= '9')))
-        {
-            JSON_THROW(detail::parse_error::create(109, 0, detail::concat("array index '", s, "' is not a number"), nullptr));
-        }
-
-        const char* p = s.c_str();
-        char* p_end = nullptr;
-        errno = 0; // strtoull doesn't reset errno
-        const unsigned long long res = std::strtoull(p, &p_end, 10); // NOLINT(runtime/int)
-        if (p == p_end // invalid input or empty string
-                || errno == ERANGE // out of range
-                || JSON_HEDLEY_UNLIKELY(static_cast<std::size_t>(p_end - p) != s.size())) // incomplete read
-        {
-            JSON_THROW(detail::out_of_range::create(404, detail::concat("unresolved reference token '", s, "'"), nullptr));
-        }
-
-        // only triggered on special platforms (like 32bit), see also
-        // https://github.com/nlohmann/json/pull/2203
-        if (res >= static_cast<unsigned long long>((std::numeric_limits<size_type>::max)()))  // NOLINT(runtime/int)
-        {
-            JSON_THROW(detail::out_of_range::create(410, detail::concat("array index ", s, " exceeds size_type"), nullptr));   // LCOV_EXCL_LINE
-        }
-
-        return static_cast<size_type>(res);
-    }
-
-  JSON_PRIVATE_UNLESS_TESTED:
-    json_pointer top() const
-    {
-        if (JSON_HEDLEY_UNLIKELY(empty()))
-        {
-            JSON_THROW(detail::out_of_range::create(405, "JSON pointer has no parent", nullptr));
-        }
-
-        json_pointer result = *this;
-        result.reference_tokens = {reference_tokens[0]};
-        return result;
-    }
-
-  private:
-    /*!
-    @brief create and return a reference to the pointed to value
-
-    @complexity Linear in the number of reference tokens.
-
-    @throw parse_error.109 if array index is not a number
-    @throw type_error.313 if value cannot be unflattened
-    */
-    template<typename BasicJsonType>
-    BasicJsonType& get_and_create(BasicJsonType& j) const
-    {
-        auto* result = &j;
-
-        // in case no reference tokens exist, return a reference to the JSON value
-        // j which will be overwritten by a primitive value
-        for (const auto& reference_token : reference_tokens)
-        {
-            switch (result->type())
-            {
-                case detail::value_t::null:
-                {
-                    if (reference_token == "0")
-                    {
-                        // start a new array if reference token is 0
-                        result = &result->operator[](0);
-                    }
-                    else
-                    {
-                        // start a new object otherwise
-                        result = &result->operator[](reference_token);
-                    }
-                    break;
-                }
-
-                case detail::value_t::object:
-                {
-                    // create an entry in the object
-                    result = &result->operator[](reference_token);
-                    break;
-                }
-
-                case detail::value_t::array:
-                {
-                    // create an entry in the array
-                    result = &result->operator[](array_index<BasicJsonType>(reference_token));
-                    break;
-                }
-
-                /*
-                The following code is only reached if there exists a reference
-                token _and_ the current value is primitive. In this case, we have
-                an error situation, because primitive values may only occur as
-                single value; that is, with an empty list of reference tokens.
-                */
-                case detail::value_t::string:
-                case detail::value_t::boolean:
-                case detail::value_t::number_integer:
-                case detail::value_t::number_unsigned:
-                case detail::value_t::number_float:
-                case detail::value_t::binary:
-                case detail::value_t::discarded:
-                default:
-                    JSON_THROW(detail::type_error::create(313, "invalid value to unflatten", &j));
-            }
-        }
-
-        return *result;
-    }
-
-    /*!
-    @brief return a reference to the pointed to value
-
-    @note This version does not throw if a value is not present, but tries to
-          create nested values instead. For instance, calling this function
-          with pointer `"/this/that"` on a null value is equivalent to calling
-          `operator[]("this").operator[]("that")` on that value, effectively
-          changing the null value to an object.
-
-    @param[in] ptr  a JSON value
-
-    @return reference to the JSON value pointed to by the JSON pointer
-
-    @complexity Linear in the length of the JSON pointer.
-
-    @throw parse_error.106   if an array index begins with '0'
-    @throw parse_error.109   if an array index was not a number
-    @throw out_of_range.404  if the JSON pointer can not be resolved
-    */
-    template<typename BasicJsonType>
-    BasicJsonType& get_unchecked(BasicJsonType* ptr) const
-    {
-        for (const auto& reference_token : reference_tokens)
-        {
-            // convert null values to arrays or objects before continuing
-            if (ptr->is_null())
-            {
-                // check if reference token is a number
-                const bool nums =
-                    std::all_of(reference_token.begin(), reference_token.end(),
-                                [](const unsigned char x)
-                {
-                    return std::isdigit(x);
-                });
-
-                // change value to array for numbers or "-" or to object otherwise
-                *ptr = (nums || reference_token == "-")
-                       ? detail::value_t::array
-                       : detail::value_t::object;
-            }
-
-            switch (ptr->type())
-            {
-                case detail::value_t::object:
-                {
-                    // use unchecked object access
-                    ptr = &ptr->operator[](reference_token);
-                    break;
-                }
-
-                case detail::value_t::array:
-                {
-                    if (reference_token == "-")
-                    {
-                        // explicitly treat "-" as index beyond the end
-                        ptr = &ptr->operator[](ptr->m_data.m_value.array->size());
-                    }
-                    else
-                    {
-                        // convert array index to number; unchecked access
-                        ptr = &ptr->operator[](array_index<BasicJsonType>(reference_token));
-                    }
-                    break;
-                }
-
-                case detail::value_t::null:
-                case detail::value_t::string:
-                case detail::value_t::boolean:
-                case detail::value_t::number_integer:
-                case detail::value_t::number_unsigned:
-                case detail::value_t::number_float:
-                case detail::value_t::binary:
-                case detail::value_t::discarded:
-                default:
-                    JSON_THROW(detail::out_of_range::create(404, detail::concat("unresolved reference token '", reference_token, "'"), ptr));
-            }
-        }
-
-        return *ptr;
-    }
-
-    /*!
-    @throw parse_error.106   if an array index begins with '0'
-    @throw parse_error.109   if an array index was not a number
-    @throw out_of_range.402  if the array index '-' is used
-    @throw out_of_range.404  if the JSON pointer can not be resolved
-    */
-    template<typename BasicJsonType>
-    BasicJsonType& get_checked(BasicJsonType* ptr) const
-    {
-        for (const auto& reference_token : reference_tokens)
-        {
-            switch (ptr->type())
-            {
-                case detail::value_t::object:
-                {
-                    // note: at performs range check
-                    ptr = &ptr->at(reference_token);
-                    break;
-                }
-
-                case detail::value_t::array:
-                {
-                    if (JSON_HEDLEY_UNLIKELY(reference_token == "-"))
-                    {
-                        // "-" always fails the range check
-                        JSON_THROW(detail::out_of_range::create(402, detail::concat(
-                                "array index '-' (", std::to_string(ptr->m_data.m_value.array->size()),
-                                ") is out of range"), ptr));
-                    }
-
-                    // note: at performs range check
-                    ptr = &ptr->at(array_index<BasicJsonType>(reference_token));
-                    break;
-                }
-
-                case detail::value_t::null:
-                case detail::value_t::string:
-                case detail::value_t::boolean:
-                case detail::value_t::number_integer:
-                case detail::value_t::number_unsigned:
-                case detail::value_t::number_float:
-                case detail::value_t::binary:
-                case detail::value_t::discarded:
-                default:
-                    JSON_THROW(detail::out_of_range::create(404, detail::concat("unresolved reference token '", reference_token, "'"), ptr));
-            }
-        }
-
-        return *ptr;
-    }
-
-    /*!
-    @brief return a const reference to the pointed to value
-
-    @param[in] ptr  a JSON value
-
-    @return const reference to the JSON value pointed to by the JSON
-    pointer
-
-    @throw parse_error.106   if an array index begins with '0'
-    @throw parse_error.109   if an array index was not a number
-    @throw out_of_range.402  if the array index '-' is used
-    @throw out_of_range.404  if the JSON pointer can not be resolved
-    */
-    template<typename BasicJsonType>
-    const BasicJsonType& get_unchecked(const BasicJsonType* ptr) const
-    {
-        for (const auto& reference_token : reference_tokens)
-        {
-            switch (ptr->type())
-            {
-                case detail::value_t::object:
-                {
-                    // use unchecked object access
-                    ptr = &ptr->operator[](reference_token);
-                    break;
-                }
-
-                case detail::value_t::array:
-                {
-                    if (JSON_HEDLEY_UNLIKELY(reference_token == "-"))
-                    {
-                        // "-" cannot be used for const access
-                        JSON_THROW(detail::out_of_range::create(402, detail::concat("array index '-' (", std::to_string(ptr->m_data.m_value.array->size()), ") is out of range"), ptr));
-                    }
-
-                    // use unchecked array access
-                    ptr = &ptr->operator[](array_index<BasicJsonType>(reference_token));
-                    break;
-                }
-
-                case detail::value_t::null:
-                case detail::value_t::string:
-                case detail::value_t::boolean:
-                case detail::value_t::number_integer:
-                case detail::value_t::number_unsigned:
-                case detail::value_t::number_float:
-                case detail::value_t::binary:
-                case detail::value_t::discarded:
-                default:
-                    JSON_THROW(detail::out_of_range::create(404, detail::concat("unresolved reference token '", reference_token, "'"), ptr));
-            }
-        }
-
-        return *ptr;
-    }
-
-    /*!
-    @throw parse_error.106   if an array index begins with '0'
-    @throw parse_error.109   if an array index was not a number
-    @throw out_of_range.402  if the array index '-' is used
-    @throw out_of_range.404  if the JSON pointer can not be resolved
-    */
-    template<typename BasicJsonType>
-    const BasicJsonType& get_checked(const BasicJsonType* ptr) const
-    {
-        for (const auto& reference_token : reference_tokens)
-        {
-            switch (ptr->type())
-            {
-                case detail::value_t::object:
-                {
-                    // note: at performs range check
-                    ptr = &ptr->at(reference_token);
-                    break;
-                }
-
-                case detail::value_t::array:
-                {
-                    if (JSON_HEDLEY_UNLIKELY(reference_token == "-"))
-                    {
-                        // "-" always fails the range check
-                        JSON_THROW(detail::out_of_range::create(402, detail::concat(
-                                "array index '-' (", std::to_string(ptr->m_data.m_value.array->size()),
-                                ") is out of range"), ptr));
-                    }
-
-                    // note: at performs range check
-                    ptr = &ptr->at(array_index<BasicJsonType>(reference_token));
-                    break;
-                }
-
-                case detail::value_t::null:
-                case detail::value_t::string:
-                case detail::value_t::boolean:
-                case detail::value_t::number_integer:
-                case detail::value_t::number_unsigned:
-                case detail::value_t::number_float:
-                case detail::value_t::binary:
-                case detail::value_t::discarded:
-                default:
-                    JSON_THROW(detail::out_of_range::create(404, detail::concat("unresolved reference token '", reference_token, "'"), ptr));
-            }
-        }
-
-        return *ptr;
-    }
-
-    /*!
-    @throw parse_error.106   if an array index begins with '0'
-    @throw parse_error.109   if an array index was not a number
-    */
-    template<typename BasicJsonType>
-    bool contains(const BasicJsonType* ptr) const
-    {
-        for (const auto& reference_token : reference_tokens)
-        {
-            switch (ptr->type())
-            {
-                case detail::value_t::object:
-                {
-                    if (!ptr->contains(reference_token))
-                    {
-                        // we did not find the key in the object
-                        return false;
-                    }
-
-                    ptr = &ptr->operator[](reference_token);
-                    break;
-                }
-
-                case detail::value_t::array:
-                {
-                    if (JSON_HEDLEY_UNLIKELY(reference_token == "-"))
-                    {
-                        // "-" always fails the range check
-                        return false;
-                    }
-                    if (JSON_HEDLEY_UNLIKELY(reference_token.size() == 1 && !("0" <= reference_token && reference_token <= "9")))
-                    {
-                        // invalid char
-                        return false;
-                    }
-                    if (JSON_HEDLEY_UNLIKELY(reference_token.size() > 1))
-                    {
-                        if (JSON_HEDLEY_UNLIKELY(!('1' <= reference_token[0] && reference_token[0] <= '9')))
-                        {
-                            // first char should be between '1' and '9'
-                            return false;
-                        }
-                        for (std::size_t i = 1; i < reference_token.size(); i++)
-                        {
-                            if (JSON_HEDLEY_UNLIKELY(!('0' <= reference_token[i] && reference_token[i] <= '9')))
-                            {
-                                // other char should be between '0' and '9'
-                                return false;
-                            }
-                        }
-                    }
-
-                    const auto idx = array_index<BasicJsonType>(reference_token);
-                    if (idx >= ptr->size())
-                    {
-                        // index out of range
-                        return false;
-                    }
-
-                    ptr = &ptr->operator[](idx);
-                    break;
-                }
-
-                case detail::value_t::null:
-                case detail::value_t::string:
-                case detail::value_t::boolean:
-                case detail::value_t::number_integer:
-                case detail::value_t::number_unsigned:
-                case detail::value_t::number_float:
-                case detail::value_t::binary:
-                case detail::value_t::discarded:
-                default:
-                {
-                    // we do not expect primitive values if there is still a
-                    // reference token to process
-                    return false;
-                }
-            }
-        }
-
-        // no reference token left means we found a primitive value
-        return true;
-    }
-
-    /*!
-    @brief split the string input to reference tokens
-
-    @note This function is only called by the json_pointer constructor.
-          All exceptions below are documented there.
-
-    @throw parse_error.107  if the pointer is not empty or begins with '/'
-    @throw parse_error.108  if character '~' is not followed by '0' or '1'
-    */
-    static std::vector<string_t> split(const string_t& reference_string)
-    {
-        std::vector<string_t> result;
-
-        // special case: empty reference string -> no reference tokens
-        if (reference_string.empty())
-        {
-            return result;
-        }
-
-        // check if nonempty reference string begins with slash
-        if (JSON_HEDLEY_UNLIKELY(reference_string[0] != '/'))
-        {
-            JSON_THROW(detail::parse_error::create(107, 1, detail::concat("JSON pointer must be empty or begin with '/' - was: '", reference_string, "'"), nullptr));
-        }
-
-        // extract the reference tokens:
-        // - slash: position of the last read slash (or end of string)
-        // - start: position after the previous slash
-        for (
-            // search for the first slash after the first character
-            std::size_t slash = reference_string.find_first_of('/', 1),
-            // set the beginning of the first reference token
-            start = 1;
-            // we can stop if start == 0 (if slash == string_t::npos)
-            start != 0;
-            // set the beginning of the next reference token
-            // (will eventually be 0 if slash == string_t::npos)
-            start = (slash == string_t::npos) ? 0 : slash + 1,
-            // find next slash
-            slash = reference_string.find_first_of('/', start))
-        {
-            // use the text between the beginning of the reference token
-            // (start) and the last slash (slash).
-            auto reference_token = reference_string.substr(start, slash - start);
-
-            // check reference tokens are properly escaped
-            for (std::size_t pos = reference_token.find_first_of('~');
-                    pos != string_t::npos;
-                    pos = reference_token.find_first_of('~', pos + 1))
-            {
-                JSON_ASSERT(reference_token[pos] == '~');
-
-                // ~ must be followed by 0 or 1
-                if (JSON_HEDLEY_UNLIKELY(pos == reference_token.size() - 1 ||
-                                         (reference_token[pos + 1] != '0' &&
-                                          reference_token[pos + 1] != '1')))
-                {
-                    JSON_THROW(detail::parse_error::create(108, 0, "escape character '~' must be followed with '0' or '1'", nullptr));
-                }
-            }
-
-            // finally, store the reference token
-            detail::unescape(reference_token);
-            result.push_back(reference_token);
-        }
-
-        return result;
-    }
-
-  private:
-    /*!
-    @param[in] reference_string  the reference string to the current value
-    @param[in] value             the value to consider
-    @param[in,out] result        the result object to insert values to
-
-    @note Empty objects or arrays are flattened to `null`.
-    */
-    template<typename BasicJsonType>
-    static void flatten(const string_t& reference_string,
-                        const BasicJsonType& value,
-                        BasicJsonType& result)
-    {
-        switch (value.type())
-        {
-            case detail::value_t::array:
-            {
-                if (value.m_data.m_value.array->empty())
-                {
-                    // flatten empty array as null
-                    result[reference_string] = nullptr;
-                }
-                else
-                {
-                    // iterate array and use index as reference string
-                    for (std::size_t i = 0; i < value.m_data.m_value.array->size(); ++i)
-                    {
-                        flatten(detail::concat(reference_string, '/', std::to_string(i)),
-                                value.m_data.m_value.array->operator[](i), result);
-                    }
-                }
-                break;
-            }
-
-            case detail::value_t::object:
-            {
-                if (value.m_data.m_value.object->empty())
-                {
-                    // flatten empty object as null
-                    result[reference_string] = nullptr;
-                }
-                else
-                {
-                    // iterate object and use keys as reference string
-                    for (const auto& element : *value.m_data.m_value.object)
-                    {
-                        flatten(detail::concat(reference_string, '/', detail::escape(element.first)), element.second, result);
-                    }
-                }
-                break;
-            }
-
-            case detail::value_t::null:
-            case detail::value_t::string:
-            case detail::value_t::boolean:
-            case detail::value_t::number_integer:
-            case detail::value_t::number_unsigned:
-            case detail::value_t::number_float:
-            case detail::value_t::binary:
-            case detail::value_t::discarded:
-            default:
-            {
-                // add primitive value with its reference string
-                result[reference_string] = value;
-                break;
-            }
-        }
-    }
-
-    /*!
-    @param[in] value  flattened JSON
-
-    @return unflattened JSON
-
-    @throw parse_error.109 if array index is not a number
-    @throw type_error.314  if value is not an object
-    @throw type_error.315  if object values are not primitive
-    @throw type_error.313  if value cannot be unflattened
-    */
-    template<typename BasicJsonType>
-    static BasicJsonType
-    unflatten(const BasicJsonType& value)
-    {
-        if (JSON_HEDLEY_UNLIKELY(!value.is_object()))
-        {
-            JSON_THROW(detail::type_error::create(314, "only objects can be unflattened", &value));
-        }
-
-        BasicJsonType result;
-
-        // iterate the JSON object values
-        for (const auto& element : *value.m_data.m_value.object)
-        {
-            if (JSON_HEDLEY_UNLIKELY(!element.second.is_primitive()))
-            {
-                JSON_THROW(detail::type_error::create(315, "values in object must be primitive", &element.second));
-            }
-
-            // assign value to reference pointed to by JSON pointer; Note that if
-            // the JSON pointer is "" (i.e., points to the whole value), function
-            // get_and_create returns a reference to result itself. An assignment
-            // will then create a primitive value.
-            json_pointer(element.first).get_and_create(result) = element.second;
-        }
-
-        return result;
-    }
-
-    // can't use conversion operator because of ambiguity
-    json_pointer<string_t> convert() const&
-    {
-        json_pointer<string_t> result;
-        result.reference_tokens = reference_tokens;
-        return result;
-    }
-
-    json_pointer<string_t> convert()&&
-    {
-        json_pointer<string_t> result;
-        result.reference_tokens = std::move(reference_tokens);
-        return result;
-    }
-
-  public:
-#if JSON_HAS_THREE_WAY_COMPARISON
-    /// @brief compares two JSON pointers for equality
-    /// @sa https://json.nlohmann.me/api/json_pointer/operator_eq/
-    template<typename RefStringTypeRhs>
-    bool operator==(const json_pointer<RefStringTypeRhs>& rhs) const noexcept
-    {
-        return reference_tokens == rhs.reference_tokens;
-    }
-
-    /// @brief compares JSON pointer and string for equality
-    /// @sa https://json.nlohmann.me/api/json_pointer/operator_eq/
-    JSON_HEDLEY_DEPRECATED_FOR(3.11.2, operator==(json_pointer))
-    bool operator==(const string_t& rhs) const
-    {
-        return *this == json_pointer(rhs);
-    }
-
-    /// @brief 3-way compares two JSON pointers
-    template<typename RefStringTypeRhs>
-    std::strong_ordering operator<=>(const json_pointer<RefStringTypeRhs>& rhs) const noexcept // *NOPAD*
-    {
-        return  reference_tokens <=> rhs.reference_tokens; // *NOPAD*
-    }
-#else
-    /// @brief compares two JSON pointers for equality
-    /// @sa https://json.nlohmann.me/api/json_pointer/operator_eq/
-    template<typename RefStringTypeLhs, typename RefStringTypeRhs>
-    // NOLINTNEXTLINE(readability-redundant-declaration)
-    friend bool operator==(const json_pointer<RefStringTypeLhs>& lhs,
-                           const json_pointer<RefStringTypeRhs>& rhs) noexcept;
-
-    /// @brief compares JSON pointer and string for equality
-    /// @sa https://json.nlohmann.me/api/json_pointer/operator_eq/
-    template<typename RefStringTypeLhs, typename StringType>
-    // NOLINTNEXTLINE(readability-redundant-declaration)
-    friend bool operator==(const json_pointer<RefStringTypeLhs>& lhs,
-                           const StringType& rhs);
-
-    /// @brief compares string and JSON pointer for equality
-    /// @sa https://json.nlohmann.me/api/json_pointer/operator_eq/
-    template<typename RefStringTypeRhs, typename StringType>
-    // NOLINTNEXTLINE(readability-redundant-declaration)
-    friend bool operator==(const StringType& lhs,
-                           const json_pointer<RefStringTypeRhs>& rhs);
-
-    /// @brief compares two JSON pointers for inequality
-    /// @sa https://json.nlohmann.me/api/json_pointer/operator_ne/
-    template<typename RefStringTypeLhs, typename RefStringTypeRhs>
-    // NOLINTNEXTLINE(readability-redundant-declaration)
-    friend bool operator!=(const json_pointer<RefStringTypeLhs>& lhs,
-                           const json_pointer<RefStringTypeRhs>& rhs) noexcept;
-
-    /// @brief compares JSON pointer and string for inequality
-    /// @sa https://json.nlohmann.me/api/json_pointer/operator_ne/
-    template<typename RefStringTypeLhs, typename StringType>
-    // NOLINTNEXTLINE(readability-redundant-declaration)
-    friend bool operator!=(const json_pointer<RefStringTypeLhs>& lhs,
-                           const StringType& rhs);
-
-    /// @brief compares string and JSON pointer for inequality
-    /// @sa https://json.nlohmann.me/api/json_pointer/operator_ne/
-    template<typename RefStringTypeRhs, typename StringType>
-    // NOLINTNEXTLINE(readability-redundant-declaration)
-    friend bool operator!=(const StringType& lhs,
-                           const json_pointer<RefStringTypeRhs>& rhs);
-
-    /// @brief compares two JSON pointer for less-than
-    template<typename RefStringTypeLhs, typename RefStringTypeRhs>
-    // NOLINTNEXTLINE(readability-redundant-declaration)
-    friend bool operator<(const json_pointer<RefStringTypeLhs>& lhs,
-                          const json_pointer<RefStringTypeRhs>& rhs) noexcept;
-#endif
-
-  private:
-    /// the reference tokens
-    std::vector<string_t> reference_tokens;
-};
-
-#if !JSON_HAS_THREE_WAY_COMPARISON
-// functions cannot be defined inside class due to ODR violations
-template<typename RefStringTypeLhs, typename RefStringTypeRhs>
-inline bool operator==(const json_pointer<RefStringTypeLhs>& lhs,
-                       const json_pointer<RefStringTypeRhs>& rhs) noexcept
-{
-    return lhs.reference_tokens == rhs.reference_tokens;
-}
-
-template<typename RefStringTypeLhs,
-         typename StringType = typename json_pointer<RefStringTypeLhs>::string_t>
-JSON_HEDLEY_DEPRECATED_FOR(3.11.2, operator==(json_pointer, json_pointer))
-inline bool operator==(const json_pointer<RefStringTypeLhs>& lhs,
-                       const StringType& rhs)
-{
-    return lhs == json_pointer<RefStringTypeLhs>(rhs);
-}
-
-template<typename RefStringTypeRhs,
-         typename StringType = typename json_pointer<RefStringTypeRhs>::string_t>
-JSON_HEDLEY_DEPRECATED_FOR(3.11.2, operator==(json_pointer, json_pointer))
-inline bool operator==(const StringType& lhs,
-                       const json_pointer<RefStringTypeRhs>& rhs)
-{
-    return json_pointer<RefStringTypeRhs>(lhs) == rhs;
-}
-
-template<typename RefStringTypeLhs, typename RefStringTypeRhs>
-inline bool operator!=(const json_pointer<RefStringTypeLhs>& lhs,
-                       const json_pointer<RefStringTypeRhs>& rhs) noexcept
-{
-    return !(lhs == rhs);
-}
-
-template<typename RefStringTypeLhs,
-         typename StringType = typename json_pointer<RefStringTypeLhs>::string_t>
-JSON_HEDLEY_DEPRECATED_FOR(3.11.2, operator!=(json_pointer, json_pointer))
-inline bool operator!=(const json_pointer<RefStringTypeLhs>& lhs,
-                       const StringType& rhs)
-{
-    return !(lhs == rhs);
-}
-
-template<typename RefStringTypeRhs,
-         typename StringType = typename json_pointer<RefStringTypeRhs>::string_t>
-JSON_HEDLEY_DEPRECATED_FOR(3.11.2, operator!=(json_pointer, json_pointer))
-inline bool operator!=(const StringType& lhs,
-                       const json_pointer<RefStringTypeRhs>& rhs)
-{
-    return !(lhs == rhs);
-}
-
-template<typename RefStringTypeLhs, typename RefStringTypeRhs>
-inline bool operator<(const json_pointer<RefStringTypeLhs>& lhs,
-                      const json_pointer<RefStringTypeRhs>& rhs) noexcept
-{
-    return lhs.reference_tokens < rhs.reference_tokens;
-}
-#endif
-
-NLOHMANN_JSON_NAMESPACE_END
-
-// #include <nlohmann/detail/json_ref.hpp>
-//     __ _____ _____ _____
-//  __|  |   __|     |   | |  JSON for Modern C++
-// |  |  |__   |  |  | | | |  version 3.11.2
-// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
-//
-// SPDX-FileCopyrightText: 2013-2022 Niels Lohmann <https://nlohmann.me>
-// SPDX-License-Identifier: MIT
-
-
-
-#include <initializer_list>
-#include <utility>
-
-// #include <nlohmann/detail/abi_macros.hpp>
-
-// #include <nlohmann/detail/meta/type_traits.hpp>
-
-
-NLOHMANN_JSON_NAMESPACE_BEGIN
-namespace detail
-{
-
-template<typename BasicJsonType>
-class json_ref
-{
-  public:
-    using value_type = BasicJsonType;
-
-    json_ref(value_type&& value)
-        : owned_value(std::move(value))
-    {}
-
-    json_ref(const value_type& value)
-        : value_ref(&value)
-    {}
-
-    json_ref(std::initializer_list<json_ref> init)
-        : owned_value(init)
-    {}
-
-    template <
-        class... Args,
-        enable_if_t<std::is_constructible<value_type, Args...>::value, int> = 0 >
-    json_ref(Args && ... args)
-        : owned_value(std::forward<Args>(args)...)
-    {}
-
-    // class should be movable only
-    json_ref(json_ref&&) noexcept = default;
-    json_ref(const json_ref&) = delete;
-    json_ref& operator=(const json_ref&) = delete;
-    json_ref& operator=(json_ref&&) = delete;
-    ~json_ref() = default;
-
-    value_type moved_or_copied() const
-    {
-        if (value_ref == nullptr)
-        {
-            return std::move(owned_value);
-        }
-        return *value_ref;
-    }
-
-    value_type const& operator*() const
-    {
-        return value_ref ? *value_ref : owned_value;
-    }
-
-    value_type const* operator->() const
-    {
-        return &** this;
-    }
-
-  private:
-    mutable value_type owned_value = nullptr;
-    value_type const* value_ref = nullptr;
-};
-
-}  // namespace detail
-NLOHMANN_JSON_NAMESPACE_END
-
-// #include <nlohmann/detail/macro_scope.hpp>
-
-// #include <nlohmann/detail/string_concat.hpp>
-
-// #include <nlohmann/detail/string_escape.hpp>
-
-// #include <nlohmann/detail/meta/cpp_future.hpp>
-
-// #include <nlohmann/detail/meta/type_traits.hpp>
-
-// #include <nlohmann/detail/output/binary_writer.hpp>
-//     __ _____ _____ _____
-//  __|  |   __|     |   | |  JSON for Modern C++
-// |  |  |__   |  |  | | | |  version 3.11.2
-// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
-//
-// SPDX-FileCopyrightText: 2013-2022 Niels Lohmann <https://nlohmann.me>
-// SPDX-License-Identifier: MIT
-
-
-
-#include <algorithm> // reverse
-#include <array> // array
-#include <map> // map
-#include <cmath> // isnan, isinf
-#include <cstdint> // uint8_t, uint16_t, uint32_t, uint64_t
-#include <cstring> // memcpy
-#include <limits> // numeric_limits
-#include <string> // string
-#include <utility> // move
-#include <vector> // vector
-
-// #include <nlohmann/detail/input/binary_reader.hpp>
-
-// #include <nlohmann/detail/macro_scope.hpp>
-
-// #include <nlohmann/detail/output/output_adapters.hpp>
-//     __ _____ _____ _____
-//  __|  |   __|     |   | |  JSON for Modern C++
-// |  |  |__   |  |  | | | |  version 3.11.2
-// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
-//
-// SPDX-FileCopyrightText: 2013-2022 Niels Lohmann <https://nlohmann.me>
-// SPDX-License-Identifier: MIT
-
-
-
-#include <algorithm> // copy
-#include <cstddef> // size_t
-#include <iterator> // back_inserter
-#include <memory> // shared_ptr, make_shared
-#include <string> // basic_string
-#include <vector> // vector
-
-#ifndef JSON_NO_IO
-    #include <ios>      // streamsize
-    #include <ostream>  // basic_ostream
-#endif  // JSON_NO_IO
-
-// #include <nlohmann/detail/macro_scope.hpp>
-
-
-NLOHMANN_JSON_NAMESPACE_BEGIN
-namespace detail
-{
-
-/// abstract output adapter interface
-template<typename CharType> struct output_adapter_protocol
-{
-    virtual void write_character(CharType c) = 0;
-    virtual void write_characters(const CharType* s, std::size_t length) = 0;
-    virtual ~output_adapter_protocol() = default;
-
-    output_adapter_protocol() = default;
-    output_adapter_protocol(const output_adapter_protocol&) = default;
-    output_adapter_protocol(output_adapter_protocol&&) noexcept = default;
-    output_adapter_protocol& operator=(const output_adapter_protocol&) = default;
-    output_adapter_protocol& operator=(output_adapter_protocol&&) noexcept = default;
-};
-
-/// a type to simplify interfaces
-template<typename CharType>
-using output_adapter_t = std::shared_ptr<output_adapter_protocol<CharType>>;
-
-/// output adapter for byte vectors
-template<typename CharType, typename AllocatorType = std::allocator<CharType>>
-class output_vector_adapter : public output_adapter_protocol<CharType>
-{
-  public:
-    explicit output_vector_adapter(std::vector<CharType, AllocatorType>& vec) noexcept
-        : v(vec)
-    {}
-
-    void write_character(CharType c) override
-    {
-        v.push_back(c);
-    }
-
-    JSON_HEDLEY_NON_NULL(2)
-    void write_characters(const CharType* s, std::size_t length) override
-    {
-        v.insert(v.end(), s, s + length);
-    }
-
-  private:
-    std::vector<CharType, AllocatorType>& v;
-};
-
-#ifndef JSON_NO_IO
-/// output adapter for output streams
-template<typename CharType>
-class output_stream_adapter : public output_adapter_protocol<CharType>
-{
-  public:
-    explicit output_stream_adapter(std::basic_ostream<CharType>& s) noexcept
-        : stream(s)
-    {}
-
-    void write_character(CharType c) override
-    {
-        stream.put(c);
-    }
-
-    JSON_HEDLEY_NON_NULL(2)
-    void write_characters(const CharType* s, std::size_t length) override
-    {
-        stream.write(s, static_cast<std::streamsize>(length));
-    }
-
-  private:
-    std::basic_ostream<CharType>& stream;
-};
-#endif  // JSON_NO_IO
-
-/// output adapter for basic_string
-template<typename CharType, typename StringType = std::basic_string<CharType>>
-class output_string_adapter : public output_adapter_protocol<CharType>
-{
-  public:
-    explicit output_string_adapter(StringType& s) noexcept
-        : str(s)
-    {}
-
-    void write_character(CharType c) override
-    {
-        str.push_back(c);
-    }
-
-    JSON_HEDLEY_NON_NULL(2)
-    void write_characters(const CharType* s, std::size_t length) override
-    {
-        str.append(s, length);
-    }
-
-  private:
-    StringType& str;
-};
-
-template<typename CharType, typename StringType = std::basic_string<CharType>>
-class output_adapter
-{
-  public:
-    template<typename AllocatorType = std::allocator<CharType>>
-    output_adapter(std::vector<CharType, AllocatorType>& vec)
-        : oa(std::make_shared<output_vector_adapter<CharType, AllocatorType>>(vec)) {}
-
-#ifndef JSON_NO_IO
-    output_adapter(std::basic_ostream<CharType>& s)
-        : oa(std::make_shared<output_stream_adapter<CharType>>(s)) {}
-#endif  // JSON_NO_IO
-
-    output_adapter(StringType& s)
-        : oa(std::make_shared<output_string_adapter<CharType, StringType>>(s)) {}
-
-    operator output_adapter_t<CharType>()
-    {
-        return oa;
-    }
-
-  private:
-    output_adapter_t<CharType> oa = nullptr;
-};
-
-}  // namespace detail
-NLOHMANN_JSON_NAMESPACE_END
-
-// #include <nlohmann/detail/string_concat.hpp>
-
-
-NLOHMANN_JSON_NAMESPACE_BEGIN
-namespace detail
-{
-
-///////////////////
-// binary writer //
-///////////////////
-
-/*!
-@brief serialization to CBOR and MessagePack values
-*/
-template<typename BasicJsonType, typename CharType>
-class binary_writer
-{
-    using string_t = typename BasicJsonType::string_t;
-    using binary_t = typename BasicJsonType::binary_t;
-    using number_float_t = typename BasicJsonType::number_float_t;
-
-  public:
-    /*!
-    @brief create a binary writer
-
-    @param[in] adapter  output adapter to write to
-    */
-    explicit binary_writer(output_adapter_t<CharType> adapter) : oa(std::move(adapter))
-    {
-        JSON_ASSERT(oa);
-    }
-
-    /*!
-    @param[in] j  JSON value to serialize
-    @pre       j.type() == value_t::object
-    */
-    void write_bson(const BasicJsonType& j)
-    {
-        switch (j.type())
-        {
-            case value_t::object:
-            {
-                write_bson_object(*j.m_data.m_value.object);
-                break;
-            }
-
-            case value_t::null:
-            case value_t::array:
-            case value_t::string:
-            case value_t::boolean:
-            case value_t::number_integer:
-            case value_t::number_unsigned:
-            case value_t::number_float:
-            case value_t::binary:
-            case value_t::discarded:
-            default:
-            {
-                JSON_THROW(type_error::create(317, concat("to serialize to BSON, top-level type must be object, but is ", j.type_name()), &j));
-            }
-        }
-    }
-
-    /*!
-    @param[in] j  JSON value to serialize
-    */
-    void write_cbor(const BasicJsonType& j)
-    {
-        switch (j.type())
-        {
-            case value_t::null:
-            {
-                oa->write_character(to_char_type(0xF6));
-                break;
-            }
-
-            case value_t::boolean:
-            {
-                oa->write_character(j.m_data.m_value.boolean
-                                    ? to_char_type(0xF5)
-                                    : to_char_type(0xF4));
-                break;
-            }
-
-            case value_t::number_integer:
-            {
-                if (j.m_data.m_value.number_integer >= 0)
-                {
-                    // CBOR does not differentiate between positive signed
-                    // integers and unsigned integers. Therefore, we used the
-                    // code from the value_t::number_unsigned case here.
-                    if (j.m_data.m_value.number_integer <= 0x17)
-                    {
-                        write_number(static_cast<std::uint8_t>(j.m_data.m_value.number_integer));
-                    }
-                    else if (j.m_data.m_value.number_integer <= (std::numeric_limits<std::uint8_t>::max)())
-                    {
-                        oa->write_character(to_char_type(0x18));
-                        write_number(static_cast<std::uint8_t>(j.m_data.m_value.number_integer));
-                    }
-                    else if (j.m_data.m_value.number_integer <= (std::numeric_limits<std::uint16_t>::max)())
-                    {
-                        oa->write_character(to_char_type(0x19));
-                        write_number(static_cast<std::uint16_t>(j.m_data.m_value.number_integer));
-                    }
-                    else if (j.m_data.m_value.number_integer <= (std::numeric_limits<std::uint32_t>::max)())
-                    {
-                        oa->write_character(to_char_type(0x1A));
-                        write_number(static_cast<std::uint32_t>(j.m_data.m_value.number_integer));
-                    }
-                    else
-                    {
-                        oa->write_character(to_char_type(0x1B));
-                        write_number(static_cast<std::uint64_t>(j.m_data.m_value.number_integer));
-                    }
-                }
-                else
-                {
-                    // The conversions below encode the sign in the first
-                    // byte, and the value is converted to a positive number.
-                    const auto positive_number = -1 - j.m_data.m_value.number_integer;
-                    if (j.m_data.m_value.number_integer >= -24)
-                    {
-                        write_number(static_cast<std::uint8_t>(0x20 + positive_number));
-                    }
-                    else if (positive_number <= (std::numeric_limits<std::uint8_t>::max)())
-                    {
-                        oa->write_character(to_char_type(0x38));
-                        write_number(static_cast<std::uint8_t>(positive_number));
-                    }
-                    else if (positive_number <= (std::numeric_limits<std::uint16_t>::max)())
-                    {
-                        oa->write_character(to_char_type(0x39));
-                        write_number(static_cast<std::uint16_t>(positive_number));
-                    }
-                    else if (positive_number <= (std::numeric_limits<std::uint32_t>::max)())
-                    {
-                        oa->write_character(to_char_type(0x3A));
-                        write_number(static_cast<std::uint32_t>(positive_number));
-                    }
-                    else
-                    {
-                        oa->write_character(to_char_type(0x3B));
-                        write_number(static_cast<std::uint64_t>(positive_number));
-                    }
-                }
-                break;
-            }
-
-            case value_t::number_unsigned:
-            {
-                if (j.m_data.m_value.number_unsigned <= 0x17)
-                {
-                    write_number(static_cast<std::uint8_t>(j.m_data.m_value.number_unsigned));
-                }
-                else if (j.m_data.m_value.number_unsigned <= (std::numeric_limits<std::uint8_t>::max)())
-                {
-                    oa->write_character(to_char_type(0x18));
-                    write_number(static_cast<std::uint8_t>(j.m_data.m_value.number_unsigned));
-                }
-                else if (j.m_data.m_value.number_unsigned <= (std::numeric_limits<std::uint16_t>::max)())
-                {
-                    oa->write_character(to_char_type(0x19));
-                    write_number(static_cast<std::uint16_t>(j.m_data.m_value.number_unsigned));
-                }
-                else if (j.m_data.m_value.number_unsigned <= (std::numeric_limits<std::uint32_t>::max)())
-                {
-                    oa->write_character(to_char_type(0x1A));
-                    write_number(static_cast<std::uint32_t>(j.m_data.m_value.number_unsigned));
-                }
-                else
-                {
-                    oa->write_character(to_char_type(0x1B));
-                    write_number(static_cast<std::uint64_t>(j.m_data.m_value.number_unsigned));
-                }
-                break;
-            }
-
-            case value_t::number_float:
-            {
-                if (std::isnan(j.m_data.m_value.number_float))
-                {
-                    // NaN is 0xf97e00 in CBOR
-                    oa->write_character(to_char_type(0xF9));
-                    oa->write_character(to_char_type(0x7E));
-                    oa->write_character(to_char_type(0x00));
-                }
-                else if (std::isinf(j.m_data.m_value.number_float))
-                {
-                    // Infinity is 0xf97c00, -Infinity is 0xf9fc00
-                    oa->write_character(to_char_type(0xf9));
-                    oa->write_character(j.m_data.m_value.number_float > 0 ? to_char_type(0x7C) : to_char_type(0xFC));
-                    oa->write_character(to_char_type(0x00));
-                }
-                else
-                {
-                    write_compact_float(j.m_data.m_value.number_float, detail::input_format_t::cbor);
-                }
-                break;
-            }
-
-            case value_t::string:
-            {
-                // step 1: write control byte and the string length
-                const auto N = j.m_data.m_value.string->size();
-                if (N <= 0x17)
-                {
-                    write_number(static_cast<std::uint8_t>(0x60 + N));
-                }
-                else if (N <= (std::numeric_limits<std::uint8_t>::max)())
-                {
-                    oa->write_character(to_char_type(0x78));
-                    write_number(static_cast<std::uint8_t>(N));
-                }
-                else if (N <= (std::numeric_limits<std::uint16_t>::max)())
-                {
-                    oa->write_character(to_char_type(0x79));
-                    write_number(static_cast<std::uint16_t>(N));
-                }
-                else if (N <= (std::numeric_limits<std::uint32_t>::max)())
-                {
-                    oa->write_character(to_char_type(0x7A));
-                    write_number(static_cast<std::uint32_t>(N));
-                }
-                // LCOV_EXCL_START
-                else if (N <= (std::numeric_limits<std::uint64_t>::max)())
-                {
-                    oa->write_character(to_char_type(0x7B));
-                    write_number(static_cast<std::uint64_t>(N));
-                }
-                // LCOV_EXCL_STOP
-
-                // step 2: write the string
-                oa->write_characters(
-                    reinterpret_cast<const CharType*>(j.m_data.m_value.string->c_str()),
-                    j.m_data.m_value.string->size());
-                break;
-            }
-
-            case value_t::array:
-            {
-                // step 1: write control byte and the array size
-                const auto N = j.m_data.m_value.array->size();
-                if (N <= 0x17)
-                {
-                    write_number(static_cast<std::uint8_t>(0x80 + N));
-                }
-                else if (N <= (std::numeric_limits<std::uint8_t>::max)())
-                {
-                    oa->write_character(to_char_type(0x98));
-                    write_number(static_cast<std::uint8_t>(N));
-                }
-                else if (N <= (std::numeric_limits<std::uint16_t>::max)())
-                {
-                    oa->write_character(to_char_type(0x99));
-                    write_number(static_cast<std::uint16_t>(N));
-                }
-                else if (N <= (std::numeric_limits<std::uint32_t>::max)())
-                {
-                    oa->write_character(to_char_type(0x9A));
-                    write_number(static_cast<std::uint32_t>(N));
-                }
-                // LCOV_EXCL_START
-                else if (N <= (std::numeric_limits<std::uint64_t>::max)())
-                {
-                    oa->write_character(to_char_type(0x9B));
-                    write_number(static_cast<std::uint64_t>(N));
-                }
-                // LCOV_EXCL_STOP
-
-                // step 2: write each element
-                for (const auto& el : *j.m_data.m_value.array)
-                {
-                    write_cbor(el);
-                }
-                break;
-            }
-
-            case value_t::binary:
-            {
-                if (j.m_data.m_value.binary->has_subtype())
-                {
-                    if (j.m_data.m_value.binary->subtype() <= (std::numeric_limits<std::uint8_t>::max)())
-                    {
-                        write_number(static_cast<std::uint8_t>(0xd8));
-                        write_number(static_cast<std::uint8_t>(j.m_data.m_value.binary->subtype()));
-                    }
-                    else if (j.m_data.m_value.binary->subtype() <= (std::numeric_limits<std::uint16_t>::max)())
-                    {
-                        write_number(static_cast<std::uint8_t>(0xd9));
-                        write_number(static_cast<std::uint16_t>(j.m_data.m_value.binary->subtype()));
-                    }
-                    else if (j.m_data.m_value.binary->subtype() <= (std::numeric_limits<std::uint32_t>::max)())
-                    {
-                        write_number(static_cast<std::uint8_t>(0xda));
-                        write_number(static_cast<std::uint32_t>(j.m_data.m_value.binary->subtype()));
-                    }
-                    else if (j.m_data.m_value.binary->subtype() <= (std::numeric_limits<std::uint64_t>::max)())
-                    {
-                        write_number(static_cast<std::uint8_t>(0xdb));
-                        write_number(static_cast<std::uint64_t>(j.m_data.m_value.binary->subtype()));
-                    }
-                }
-
-                // step 1: write control byte and the binary array size
-                const auto N = j.m_data.m_value.binary->size();
-                if (N <= 0x17)
-                {
-                    write_number(static_cast<std::uint8_t>(0x40 + N));
-                }
-                else if (N <= (std::numeric_limits<std::uint8_t>::max)())
-                {
-                    oa->write_character(to_char_type(0x58));
-                    write_number(static_cast<std::uint8_t>(N));
-                }
-                else if (N <= (std::numeric_limits<std::uint16_t>::max)())
-                {
-                    oa->write_character(to_char_type(0x59));
-                    write_number(static_cast<std::uint16_t>(N));
-                }
-                else if (N <= (std::numeric_limits<std::uint32_t>::max)())
-                {
-                    oa->write_character(to_char_type(0x5A));
-                    write_number(static_cast<std::uint32_t>(N));
-                }
-                // LCOV_EXCL_START
-                else if (N <= (std::numeric_limits<std::uint64_t>::max)())
-                {
-                    oa->write_character(to_char_type(0x5B));
-                    write_number(static_cast<std::uint64_t>(N));
-                }
-                // LCOV_EXCL_STOP
-
-                // step 2: write each element
-                oa->write_characters(
-                    reinterpret_cast<const CharType*>(j.m_data.m_value.binary->data()),
-                    N);
-
-                break;
-            }
-
-            case value_t::object:
-            {
-                // step 1: write control byte and the object size
-                const auto N = j.m_data.m_value.object->size();
-                if (N <= 0x17)
-                {
-                    write_number(static_cast<std::uint8_t>(0xA0 + N));
-                }
-                else if (N <= (std::numeric_limits<std::uint8_t>::max)())
-                {
-                    oa->write_character(to_char_type(0xB8));
-                    write_number(static_cast<std::uint8_t>(N));
-                }
-                else if (N <= (std::numeric_limits<std::uint16_t>::max)())
-                {
-                    oa->write_character(to_char_type(0xB9));
-                    write_number(static_cast<std::uint16_t>(N));
-                }
-                else if (N <= (std::numeric_limits<std::uint32_t>::max)())
-                {
-                    oa->write_character(to_char_type(0xBA));
-                    write_number(static_cast<std::uint32_t>(N));
-                }
-                // LCOV_EXCL_START
-                else if (N <= (std::numeric_limits<std::uint64_t>::max)())
-                {
-                    oa->write_character(to_char_type(0xBB));
-                    write_number(static_cast<std::uint64_t>(N));
-                }
-                // LCOV_EXCL_STOP
-
-                // step 2: write each element
-                for (const auto& el : *j.m_data.m_value.object)
-                {
-                    write_cbor(el.first);
-                    write_cbor(el.second);
-                }
-                break;
-            }
-
-            case value_t::discarded:
-            default:
-                break;
-        }
-    }
-
-    /*!
-    @param[in] j  JSON value to serialize
-    */
-    void write_msgpack(const BasicJsonType& j)
-    {
-        switch (j.type())
-        {
-            case value_t::null: // nil
-            {
-                oa->write_character(to_char_type(0xC0));
-                break;
-            }
-
-            case value_t::boolean: // true and false
-            {
-                oa->write_character(j.m_data.m_value.boolean
-                                    ? to_char_type(0xC3)
-                                    : to_char_type(0xC2));
-                break;
-            }
-
-            case value_t::number_integer:
-            {
-                if (j.m_data.m_value.number_integer >= 0)
-                {
-                    // MessagePack does not differentiate between positive
-                    // signed integers and unsigned integers. Therefore, we used
-                    // the code from the value_t::number_unsigned case here.
-                    if (j.m_data.m_value.number_unsigned < 128)
-                    {
-                        // positive fixnum
-                        write_number(static_cast<std::uint8_t>(j.m_data.m_value.number_integer));
-                    }
-                    else if (j.m_data.m_value.number_unsigned <= (std::numeric_limits<std::uint8_t>::max)())
-                    {
-                        // uint 8
-                        oa->write_character(to_char_type(0xCC));
-                        write_number(static_cast<std::uint8_t>(j.m_data.m_value.number_integer));
-                    }
-                    else if (j.m_data.m_value.number_unsigned <= (std::numeric_limits<std::uint16_t>::max)())
-                    {
-                        // uint 16
-                        oa->write_character(to_char_type(0xCD));
-                        write_number(static_cast<std::uint16_t>(j.m_data.m_value.number_integer));
-                    }
-                    else if (j.m_data.m_value.number_unsigned <= (std::numeric_limits<std::uint32_t>::max)())
-                    {
-                        // uint 32
-                        oa->write_character(to_char_type(0xCE));
-                        write_number(static_cast<std::uint32_t>(j.m_data.m_value.number_integer));
-                    }
-                    else if (j.m_data.m_value.number_unsigned <= (std::numeric_limits<std::uint64_t>::max)())
-                    {
-                        // uint 64
-                        oa->write_character(to_char_type(0xCF));
-                        write_number(static_cast<std::uint64_t>(j.m_data.m_value.number_integer));
-                    }
-                }
-                else
-                {
-                    if (j.m_data.m_value.number_integer >= -32)
-                    {
-                        // negative fixnum
-                        write_number(static_cast<std::int8_t>(j.m_data.m_value.number_integer));
-                    }
-                    else if (j.m_data.m_value.number_integer >= (std::numeric_limits<std::int8_t>::min)() &&
-                             j.m_data.m_value.number_integer <= (std::numeric_limits<std::int8_t>::max)())
-                    {
-                        // int 8
-                        oa->write_character(to_char_type(0xD0));
-                        write_number(static_cast<std::int8_t>(j.m_data.m_value.number_integer));
-                    }
-                    else if (j.m_data.m_value.number_integer >= (std::numeric_limits<std::int16_t>::min)() &&
-                             j.m_data.m_value.number_integer <= (std::numeric_limits<std::int16_t>::max)())
-                    {
-                        // int 16
-                        oa->write_character(to_char_type(0xD1));
-                        write_number(static_cast<std::int16_t>(j.m_data.m_value.number_integer));
-                    }
-                    else if (j.m_data.m_value.number_integer >= (std::numeric_limits<std::int32_t>::min)() &&
-                             j.m_data.m_value.number_integer <= (std::numeric_limits<std::int32_t>::max)())
-                    {
-                        // int 32
-                        oa->write_character(to_char_type(0xD2));
-                        write_number(static_cast<std::int32_t>(j.m_data.m_value.number_integer));
-                    }
-                    else if (j.m_data.m_value.number_integer >= (std::numeric_limits<std::int64_t>::min)() &&
-                             j.m_data.m_value.number_integer <= (std::numeric_limits<std::int64_t>::max)())
-                    {
-                        // int 64
-                        oa->write_character(to_char_type(0xD3));
-                        write_number(static_cast<std::int64_t>(j.m_data.m_value.number_integer));
-                    }
-                }
-                break;
-            }
-
-            case value_t::number_unsigned:
-            {
-                if (j.m_data.m_value.number_unsigned < 128)
-                {
-                    // positive fixnum
-                    write_number(static_cast<std::uint8_t>(j.m_data.m_value.number_integer));
-                }
-                else if (j.m_data.m_value.number_unsigned <= (std::numeric_limits<std::uint8_t>::max)())
-                {
-                    // uint 8
-                    oa->write_character(to_char_type(0xCC));
-                    write_number(static_cast<std::uint8_t>(j.m_data.m_value.number_integer));
-                }
-                else if (j.m_data.m_value.number_unsigned <= (std::numeric_limits<std::uint16_t>::max)())
-                {
-                    // uint 16
-                    oa->write_character(to_char_type(0xCD));
-                    write_number(static_cast<std::uint16_t>(j.m_data.m_value.number_integer));
-                }
-                else if (j.m_data.m_value.number_unsigned <= (std::numeric_limits<std::uint32_t>::max)())
-                {
-                    // uint 32
-                    oa->write_character(to_char_type(0xCE));
-                    write_number(static_cast<std::uint32_t>(j.m_data.m_value.number_integer));
-                }
-                else if (j.m_data.m_value.number_unsigned <= (std::numeric_limits<std::uint64_t>::max)())
-                {
-                    // uint 64
-                    oa->write_character(to_char_type(0xCF));
-                    write_number(static_cast<std::uint64_t>(j.m_data.m_value.number_integer));
-                }
-                break;
-            }
-
-            case value_t::number_float:
-            {
-                write_compact_float(j.m_data.m_value.number_float, detail::input_format_t::msgpack);
-                break;
-            }
-
-            case value_t::string:
-            {
-                // step 1: write control byte and the string length
-                const auto N = j.m_data.m_value.string->size();
-                if (N <= 31)
-                {
-                    // fixstr
-                    write_number(static_cast<std::uint8_t>(0xA0 | N));
-                }
-                else if (N <= (std::numeric_limits<std::uint8_t>::max)())
-                {
-                    // str 8
-                    oa->write_character(to_char_type(0xD9));
-                    write_number(static_cast<std::uint8_t>(N));
-                }
-                else if (N <= (std::numeric_limits<std::uint16_t>::max)())
-                {
-                    // str 16
-                    oa->write_character(to_char_type(0xDA));
-                    write_number(static_cast<std::uint16_t>(N));
-                }
-                else if (N <= (std::numeric_limits<std::uint32_t>::max)())
-                {
-                    // str 32
-                    oa->write_character(to_char_type(0xDB));
-                    write_number(static_cast<std::uint32_t>(N));
-                }
-
-                // step 2: write the string
-                oa->write_characters(
-                    reinterpret_cast<const CharType*>(j.m_data.m_value.string->c_str()),
-                    j.m_data.m_value.string->size());
-                break;
-            }
-
-            case value_t::array:
-            {
-                // step 1: write control byte and the array size
-                const auto N = j.m_data.m_value.array->size();
-                if (N <= 15)
-                {
-                    // fixarray
-                    write_number(static_cast<std::uint8_t>(0x90 | N));
-                }
-                else if (N <= (std::numeric_limits<std::uint16_t>::max)())
-                {
-                    // array 16
-                    oa->write_character(to_char_type(0xDC));
-                    write_number(static_cast<std::uint16_t>(N));
-                }
-                else if (N <= (std::numeric_limits<std::uint32_t>::max)())
-                {
-                    // array 32
-                    oa->write_character(to_char_type(0xDD));
-                    write_number(static_cast<std::uint32_t>(N));
-                }
-
-                // step 2: write each element
-                for (const auto& el : *j.m_data.m_value.array)
-                {
-                    write_msgpack(el);
-                }
-                break;
-            }
-
-            case value_t::binary:
-            {
-                // step 0: determine if the binary type has a set subtype to
-                // determine whether or not to use the ext or fixext types
-                const bool use_ext = j.m_data.m_value.binary->has_subtype();
-
-                // step 1: write control byte and the byte string length
-                const auto N = j.m_data.m_value.binary->size();
-                if (N <= (std::numeric_limits<std::uint8_t>::max)())
-                {
-                    std::uint8_t output_type{};
-                    bool fixed = true;
-                    if (use_ext)
-                    {
-                        switch (N)
-                        {
-                            case 1:
-                                output_type = 0xD4; // fixext 1
-                                break;
-                            case 2:
-                                output_type = 0xD5; // fixext 2
-                                break;
-                            case 4:
-                                output_type = 0xD6; // fixext 4
-                                break;
-                            case 8:
-                                output_type = 0xD7; // fixext 8
-                                break;
-                            case 16:
-                                output_type = 0xD8; // fixext 16
-                                break;
-                            default:
-                                output_type = 0xC7; // ext 8
-                                fixed = false;
-                                break;
-                        }
-
-                    }
-                    else
-                    {
-                        output_type = 0xC4; // bin 8
-                        fixed = false;
-                    }
-
-                    oa->write_character(to_char_type(output_type));
-                    if (!fixed)
-                    {
-                        write_number(static_cast<std::uint8_t>(N));
-                    }
-                }
-                else if (N <= (std::numeric_limits<std::uint16_t>::max)())
-                {
-                    const std::uint8_t output_type = use_ext
-                                                     ? 0xC8 // ext 16
-                                                     : 0xC5; // bin 16
-
-                    oa->write_character(to_char_type(output_type));
-                    write_number(static_cast<std::uint16_t>(N));
-                }
-                else if (N <= (std::numeric_limits<std::uint32_t>::max)())
-                {
-                    const std::uint8_t output_type = use_ext
-                                                     ? 0xC9 // ext 32
-                                                     : 0xC6; // bin 32
-
-                    oa->write_character(to_char_type(output_type));
-                    write_number(static_cast<std::uint32_t>(N));
-                }
-
-                // step 1.5: if this is an ext type, write the subtype
-                if (use_ext)
-                {
-                    write_number(static_cast<std::int8_t>(j.m_data.m_value.binary->subtype()));
-                }
-
-                // step 2: write the byte string
-                oa->write_characters(
-                    reinterpret_cast<const CharType*>(j.m_data.m_value.binary->data()),
-                    N);
-
-                break;
-            }
-
-            case value_t::object:
-            {
-                // step 1: write control byte and the object size
-                const auto N = j.m_data.m_value.object->size();
-                if (N <= 15)
-                {
-                    // fixmap
-                    write_number(static_cast<std::uint8_t>(0x80 | (N & 0xF)));
-                }
-                else if (N <= (std::numeric_limits<std::uint16_t>::max)())
-                {
-                    // map 16
-                    oa->write_character(to_char_type(0xDE));
-                    write_number(static_cast<std::uint16_t>(N));
-                }
-                else if (N <= (std::numeric_limits<std::uint32_t>::max)())
-                {
-                    // map 32
-                    oa->write_character(to_char_type(0xDF));
-                    write_number(static_cast<std::uint32_t>(N));
-                }
-
-                // step 2: write each element
-                for (const auto& el : *j.m_data.m_value.object)
-                {
-                    write_msgpack(el.first);
-                    write_msgpack(el.second);
-                }
-                break;
-            }
-
-            case value_t::discarded:
-            default:
-                break;
-        }
-    }
-
-    /*!
-    @param[in] j  JSON value to serialize
-    @param[in] use_count   whether to use '#' prefixes (optimized format)
-    @param[in] use_type    whether to use '$' prefixes (optimized format)
-    @param[in] add_prefix  whether prefixes need to be used for this value
-    @param[in] use_bjdata  whether write in BJData format, default is false
-    */
-    void write_ubjson(const BasicJsonType& j, const bool use_count,
-                      const bool use_type, const bool add_prefix = true,
-                      const bool use_bjdata = false)
-    {
-        switch (j.type())
-        {
-            case value_t::null:
-            {
-                if (add_prefix)
-                {
-                    oa->write_character(to_char_type('Z'));
-                }
-                break;
-            }
-
-            case value_t::boolean:
-            {
-                if (add_prefix)
-                {
-                    oa->write_character(j.m_data.m_value.boolean
-                                        ? to_char_type('T')
-                                        : to_char_type('F'));
-                }
-                break;
-            }
-
-            case value_t::number_integer:
-            {
-                write_number_with_ubjson_prefix(j.m_data.m_value.number_integer, add_prefix, use_bjdata);
-                break;
-            }
-
-            case value_t::number_unsigned:
-            {
-                write_number_with_ubjson_prefix(j.m_data.m_value.number_unsigned, add_prefix, use_bjdata);
-                break;
-            }
-
-            case value_t::number_float:
-            {
-                write_number_with_ubjson_prefix(j.m_data.m_value.number_float, add_prefix, use_bjdata);
-                break;
-            }
-
-            case value_t::string:
-            {
-                if (add_prefix)
-                {
-                    oa->write_character(to_char_type('S'));
-                }
-                write_number_with_ubjson_prefix(j.m_data.m_value.string->size(), true, use_bjdata);
-                oa->write_characters(
-                    reinterpret_cast<const CharType*>(j.m_data.m_value.string->c_str()),
-                    j.m_data.m_value.string->size());
-                break;
-            }
-
-            case value_t::array:
-            {
-                if (add_prefix)
-                {
-                    oa->write_character(to_char_type('['));
-                }
-
-                bool prefix_required = true;
-                if (use_type && !j.m_data.m_value.array->empty())
-                {
-                    JSON_ASSERT(use_count);
-                    const CharType first_prefix = ubjson_prefix(j.front(), use_bjdata);
-                    const bool same_prefix = std::all_of(j.begin() + 1, j.end(),
-                                                         [this, first_prefix, use_bjdata](const BasicJsonType & v)
-                    {
-                        return ubjson_prefix(v, use_bjdata) == first_prefix;
-                    });
-
-                    std::vector<CharType> bjdx = {'[', '{', 'S', 'H', 'T', 'F', 'N', 'Z'}; // excluded markers in bjdata optimized type
-
-                    if (same_prefix && !(use_bjdata && std::find(bjdx.begin(), bjdx.end(), first_prefix) != bjdx.end()))
-                    {
-                        prefix_required = false;
-                        oa->write_character(to_char_type('$'));
-                        oa->write_character(first_prefix);
-                    }
-                }
-
-                if (use_count)
-                {
-                    oa->write_character(to_char_type('#'));
-                    write_number_with_ubjson_prefix(j.m_data.m_value.array->size(), true, use_bjdata);
-                }
-
-                for (const auto& el : *j.m_data.m_value.array)
-                {
-                    write_ubjson(el, use_count, use_type, prefix_required, use_bjdata);
-                }
-
-                if (!use_count)
-                {
-                    oa->write_character(to_char_type(']'));
-                }
-
-                break;
-            }
-
-            case value_t::binary:
-            {
-                if (add_prefix)
-                {
-                    oa->write_character(to_char_type('['));
-                }
-
-                if (use_type && !j.m_data.m_value.binary->empty())
-                {
-                    JSON_ASSERT(use_count);
-                    oa->write_character(to_char_type('$'));
-                    oa->write_character('U');
-                }
-
-                if (use_count)
-                {
-                    oa->write_character(to_char_type('#'));
-                    write_number_with_ubjson_prefix(j.m_data.m_value.binary->size(), true, use_bjdata);
-                }
-
-                if (use_type)
-                {
-                    oa->write_characters(
-                        reinterpret_cast<const CharType*>(j.m_data.m_value.binary->data()),
-                        j.m_data.m_value.binary->size());
-                }
-                else
-                {
-                    for (size_t i = 0; i < j.m_data.m_value.binary->size(); ++i)
-                    {
-                        oa->write_character(to_char_type('U'));
-                        oa->write_character(j.m_data.m_value.binary->data()[i]);
-                    }
-                }
-
-                if (!use_count)
-                {
-                    oa->write_character(to_char_type(']'));
-                }
-
-                break;
-            }
-
-            case value_t::object:
-            {
-                if (use_bjdata && j.m_data.m_value.object->size() == 3 && j.m_data.m_value.object->find("_ArrayType_") != j.m_data.m_value.object->end() && j.m_data.m_value.object->find("_ArraySize_") != j.m_data.m_value.object->end() && j.m_data.m_value.object->find("_ArrayData_") != j.m_data.m_value.object->end())
-                {
-                    if (!write_bjdata_ndarray(*j.m_data.m_value.object, use_count, use_type))  // decode bjdata ndarray in the JData format (https://github.com/NeuroJSON/jdata)
-                    {
-                        break;
-                    }
-                }
-
-                if (add_prefix)
-                {
-                    oa->write_character(to_char_type('{'));
-                }
-
-                bool prefix_required = true;
-                if (use_type && !j.m_data.m_value.object->empty())
-                {
-                    JSON_ASSERT(use_count);
-                    const CharType first_prefix = ubjson_prefix(j.front(), use_bjdata);
-                    const bool same_prefix = std::all_of(j.begin(), j.end(),
-                                                         [this, first_prefix, use_bjdata](const BasicJsonType & v)
-                    {
-                        return ubjson_prefix(v, use_bjdata) == first_prefix;
-                    });
-
-                    std::vector<CharType> bjdx = {'[', '{', 'S', 'H', 'T', 'F', 'N', 'Z'}; // excluded markers in bjdata optimized type
-
-                    if (same_prefix && !(use_bjdata && std::find(bjdx.begin(), bjdx.end(), first_prefix) != bjdx.end()))
-                    {
-                        prefix_required = false;
-                        oa->write_character(to_char_type('$'));
-                        oa->write_character(first_prefix);
-                    }
-                }
-
-                if (use_count)
-                {
-                    oa->write_character(to_char_type('#'));
-                    write_number_with_ubjson_prefix(j.m_data.m_value.object->size(), true, use_bjdata);
-                }
-
-                for (const auto& el : *j.m_data.m_value.object)
-                {
-                    write_number_with_ubjson_prefix(el.first.size(), true, use_bjdata);
-                    oa->write_characters(
-                        reinterpret_cast<const CharType*>(el.first.c_str()),
-                        el.first.size());
-                    write_ubjson(el.second, use_count, use_type, prefix_required, use_bjdata);
-                }
-
-                if (!use_count)
-                {
-                    oa->write_character(to_char_type('}'));
-                }
-
-                break;
-            }
-
-            case value_t::discarded:
-            default:
-                break;
-        }
-    }
-
-  private:
-    //////////
-    // BSON //
-    //////////
-
-    /*!
-    @return The size of a BSON document entry header, including the id marker
-            and the entry name size (and its null-terminator).
-    */
-    static std::size_t calc_bson_entry_header_size(const string_t& name, const BasicJsonType& j)
-    {
-        const auto it = name.find(static_cast<typename string_t::value_type>(0));
-        if (JSON_HEDLEY_UNLIKELY(it != BasicJsonType::string_t::npos))
-        {
-            JSON_THROW(out_of_range::create(409, concat("BSON key cannot contain code point U+0000 (at byte ", std::to_string(it), ")"), &j));
-            static_cast<void>(j);
-        }
-
-        return /*id*/ 1ul + name.size() + /*zero-terminator*/1u;
-    }
-
-    /*!
-    @brief Writes the given @a element_type and @a name to the output adapter
-    */
-    void write_bson_entry_header(const string_t& name,
-                                 const std::uint8_t element_type)
-    {
-        oa->write_character(to_char_type(element_type)); // boolean
-        oa->write_characters(
-            reinterpret_cast<const CharType*>(name.c_str()),
-            name.size() + 1u);
-    }
-
-    /*!
-    @brief Writes a BSON element with key @a name and boolean value @a value
-    */
-    void write_bson_boolean(const string_t& name,
-                            const bool value)
-    {
-        write_bson_entry_header(name, 0x08);
-        oa->write_character(value ? to_char_type(0x01) : to_char_type(0x00));
-    }
-
-    /*!
-    @brief Writes a BSON element with key @a name and double value @a value
-    */
-    void write_bson_double(const string_t& name,
-                           const double value)
-    {
-        write_bson_entry_header(name, 0x01);
-        write_number<double>(value, true);
-    }
-
-    /*!
-    @return The size of the BSON-encoded string in @a value
-    */
-    static std::size_t calc_bson_string_size(const string_t& value)
-    {
-        return sizeof(std::int32_t) + value.size() + 1ul;
-    }
-
-    /*!
-    @brief Writes a BSON element with key @a name and string value @a value
-    */
-    void write_bson_string(const string_t& name,
-                           const string_t& value)
-    {
-        write_bson_entry_header(name, 0x02);
-
-        write_number<std::int32_t>(static_cast<std::int32_t>(value.size() + 1ul), true);
-        oa->write_characters(
-            reinterpret_cast<const CharType*>(value.c_str()),
-            value.size() + 1);
-    }
-
-    /*!
-    @brief Writes a BSON element with key @a name and null value
-    */
-    void write_bson_null(const string_t& name)
-    {
-        write_bson_entry_header(name, 0x0A);
-    }
-
-    /*!
-    @return The size of the BSON-encoded integer @a value
-    */
-    static std::size_t calc_bson_integer_size(const std::int64_t value)
-    {
-        return (std::numeric_limits<std::int32_t>::min)() <= value && value <= (std::numeric_limits<std::int32_t>::max)()
-               ? sizeof(std::int32_t)
-               : sizeof(std::int64_t);
-    }
-
-    /*!
-    @brief Writes a BSON element with key @a name and integer @a value
-    */
-    void write_bson_integer(const string_t& name,
-                            const std::int64_t value)
-    {
-        if ((std::numeric_limits<std::int32_t>::min)() <= value && value <= (std::numeric_limits<std::int32_t>::max)())
-        {
-            write_bson_entry_header(name, 0x10); // int32
-            write_number<std::int32_t>(static_cast<std::int32_t>(value), true);
-        }
-        else
-        {
-            write_bson_entry_header(name, 0x12); // int64
-            write_number<std::int64_t>(static_cast<std::int64_t>(value), true);
-        }
-    }
-
-    /*!
-    @return The size of the BSON-encoded unsigned integer in @a j
-    */
-    static constexpr std::size_t calc_bson_unsigned_size(const std::uint64_t value) noexcept
-    {
-        return (value <= static_cast<std::uint64_t>((std::numeric_limits<std::int32_t>::max)()))
-               ? sizeof(std::int32_t)
-               : sizeof(std::int64_t);
-    }
-
-    /*!
-    @brief Writes a BSON element with key @a name and unsigned @a value
-    */
-    void write_bson_unsigned(const string_t& name,
-                             const BasicJsonType& j)
-    {
-        if (j.m_data.m_value.number_unsigned <= static_cast<std::uint64_t>((std::numeric_limits<std::int32_t>::max)()))
-        {
-            write_bson_entry_header(name, 0x10 /* int32 */);
-            write_number<std::int32_t>(static_cast<std::int32_t>(j.m_data.m_value.number_unsigned), true);
-        }
-        else if (j.m_data.m_value.number_unsigned <= static_cast<std::uint64_t>((std::numeric_limits<std::int64_t>::max)()))
-        {
-            write_bson_entry_header(name, 0x12 /* int64 */);
-            write_number<std::int64_t>(static_cast<std::int64_t>(j.m_data.m_value.number_unsigned), true);
-        }
-        else
-        {
-            JSON_THROW(out_of_range::create(407, concat("integer number ", std::to_string(j.m_data.m_value.number_unsigned), " cannot be represented by BSON as it does not fit int64"), &j));
-        }
-    }
-
-    /*!
-    @brief Writes a BSON element with key @a name and object @a value
-    */
-    void write_bson_object_entry(const string_t& name,
-                                 const typename BasicJsonType::object_t& value)
-    {
-        write_bson_entry_header(name, 0x03); // object
-        write_bson_object(value);
-    }
-
-    /*!
-    @return The size of the BSON-encoded array @a value
-    */
-    static std::size_t calc_bson_array_size(const typename BasicJsonType::array_t& value)
-    {
-        std::size_t array_index = 0ul;
-
-        const std::size_t embedded_document_size = std::accumulate(std::begin(value), std::end(value), static_cast<std::size_t>(0), [&array_index](std::size_t result, const typename BasicJsonType::array_t::value_type & el)
-        {
-            return result + calc_bson_element_size(std::to_string(array_index++), el);
-        });
-
-        return sizeof(std::int32_t) + embedded_document_size + 1ul;
-    }
-
-    /*!
-    @return The size of the BSON-encoded binary array @a value
-    */
-    static std::size_t calc_bson_binary_size(const typename BasicJsonType::binary_t& value)
-    {
-        return sizeof(std::int32_t) + value.size() + 1ul;
-    }
-
-    /*!
-    @brief Writes a BSON element with key @a name and array @a value
-    */
-    void write_bson_array(const string_t& name,
-                          const typename BasicJsonType::array_t& value)
-    {
-        write_bson_entry_header(name, 0x04); // array
-        write_number<std::int32_t>(static_cast<std::int32_t>(calc_bson_array_size(value)), true);
-
-        std::size_t array_index = 0ul;
-
-        for (const auto& el : value)
-        {
-            write_bson_element(std::to_string(array_index++), el);
-        }
-
-        oa->write_character(to_char_type(0x00));
-    }
-
-    /*!
-    @brief Writes a BSON element with key @a name and binary value @a value
-    */
-    void write_bson_binary(const string_t& name,
-                           const binary_t& value)
-    {
-        write_bson_entry_header(name, 0x05);
-
-        write_number<std::int32_t>(static_cast<std::int32_t>(value.size()), true);
-        write_number(value.has_subtype() ? static_cast<std::uint8_t>(value.subtype()) : static_cast<std::uint8_t>(0x00));
-
-        oa->write_characters(reinterpret_cast<const CharType*>(value.data()), value.size());
-    }
-
-    /*!
-    @brief Calculates the size necessary to serialize the JSON value @a j with its @a name
-    @return The calculated size for the BSON document entry for @a j with the given @a name.
-    */
-    static std::size_t calc_bson_element_size(const string_t& name,
-            const BasicJsonType& j)
-    {
-        const auto header_size = calc_bson_entry_header_size(name, j);
-        switch (j.type())
-        {
-            case value_t::object:
-                return header_size + calc_bson_object_size(*j.m_data.m_value.object);
-
-            case value_t::array:
-                return header_size + calc_bson_array_size(*j.m_data.m_value.array);
-
-            case value_t::binary:
-                return header_size + calc_bson_binary_size(*j.m_data.m_value.binary);
-
-            case value_t::boolean:
-                return header_size + 1ul;
-
-            case value_t::number_float:
-                return header_size + 8ul;
-
-            case value_t::number_integer:
-                return header_size + calc_bson_integer_size(j.m_data.m_value.number_integer);
-
-            case value_t::number_unsigned:
-                return header_size + calc_bson_unsigned_size(j.m_data.m_value.number_unsigned);
-
-            case value_t::string:
-                return header_size + calc_bson_string_size(*j.m_data.m_value.string);
-
-            case value_t::null:
-                return header_size + 0ul;
-
-            // LCOV_EXCL_START
-            case value_t::discarded:
-            default:
-                JSON_ASSERT(false); // NOLINT(cert-dcl03-c,hicpp-static-assert,misc-static-assert)
-                return 0ul;
-                // LCOV_EXCL_STOP
-        }
-    }
-
-    /*!
-    @brief Serializes the JSON value @a j to BSON and associates it with the
-           key @a name.
-    @param name The name to associate with the JSON entity @a j within the
-                current BSON document
-    */
-    void write_bson_element(const string_t& name,
-                            const BasicJsonType& j)
-    {
-        switch (j.type())
-        {
-            case value_t::object:
-                return write_bson_object_entry(name, *j.m_data.m_value.object);
-
-            case value_t::array:
-                return write_bson_array(name, *j.m_data.m_value.array);
-
-            case value_t::binary:
-                return write_bson_binary(name, *j.m_data.m_value.binary);
-
-            case value_t::boolean:
-                return write_bson_boolean(name, j.m_data.m_value.boolean);
-
-            case value_t::number_float:
-                return write_bson_double(name, j.m_data.m_value.number_float);
-
-            case value_t::number_integer:
-                return write_bson_integer(name, j.m_data.m_value.number_integer);
-
-            case value_t::number_unsigned:
-                return write_bson_unsigned(name, j);
-
-            case value_t::string:
-                return write_bson_string(name, *j.m_data.m_value.string);
-
-            case value_t::null:
-                return write_bson_null(name);
-
-            // LCOV_EXCL_START
-            case value_t::discarded:
-            default:
-                JSON_ASSERT(false); // NOLINT(cert-dcl03-c,hicpp-static-assert,misc-static-assert)
-                return;
-                // LCOV_EXCL_STOP
-        }
-    }
-
-    /*!
-    @brief Calculates the size of the BSON serialization of the given
-           JSON-object @a j.
-    @param[in] value  JSON value to serialize
-    @pre       value.type() == value_t::object
-    */
-    static std::size_t calc_bson_object_size(const typename BasicJsonType::object_t& value)
-    {
-        const std::size_t document_size = std::accumulate(value.begin(), value.end(), static_cast<std::size_t>(0),
-                                          [](size_t result, const typename BasicJsonType::object_t::value_type & el)
-        {
-            return result += calc_bson_element_size(el.first, el.second);
-        });
-
-        return sizeof(std::int32_t) + document_size + 1ul;
-    }
-
-    /*!
-    @param[in] value  JSON value to serialize
-    @pre       value.type() == value_t::object
-    */
-    void write_bson_object(const typename BasicJsonType::object_t& value)
-    {
-        write_number<std::int32_t>(static_cast<std::int32_t>(calc_bson_object_size(value)), true);
-
-        for (const auto& el : value)
-        {
-            write_bson_element(el.first, el.second);
-        }
-
-        oa->write_character(to_char_type(0x00));
-    }
-
-    //////////
-    // CBOR //
-    //////////
-
-    static constexpr CharType get_cbor_float_prefix(float /*unused*/)
-    {
-        return to_char_type(0xFA);  // Single-Precision Float
-    }
-
-    static constexpr CharType get_cbor_float_prefix(double /*unused*/)
-    {
-        return to_char_type(0xFB);  // Double-Precision Float
-    }
-
-    /////////////
-    // MsgPack //
-    /////////////
-
-    static constexpr CharType get_msgpack_float_prefix(float /*unused*/)
-    {
-        return to_char_type(0xCA);  // float 32
-    }
-
-    static constexpr CharType get_msgpack_float_prefix(double /*unused*/)
-    {
-        return to_char_type(0xCB);  // float 64
-    }
-
-    ////////////
-    // UBJSON //
-    ////////////
-
-    // UBJSON: write number (floating point)
-    template<typename NumberType, typename std::enable_if<
-                 std::is_floating_point<NumberType>::value, int>::type = 0>
-    void write_number_with_ubjson_prefix(const NumberType n,
-                                         const bool add_prefix,
-                                         const bool use_bjdata)
-    {
-        if (add_prefix)
-        {
-            oa->write_character(get_ubjson_float_prefix(n));
-        }
-        write_number(n, use_bjdata);
-    }
-
-    // UBJSON: write number (unsigned integer)
-    template<typename NumberType, typename std::enable_if<
-                 std::is_unsigned<NumberType>::value, int>::type = 0>
-    void write_number_with_ubjson_prefix(const NumberType n,
-                                         const bool add_prefix,
-                                         const bool use_bjdata)
-    {
-        if (n <= static_cast<std::uint64_t>((std::numeric_limits<std::int8_t>::max)()))
-        {
-            if (add_prefix)
-            {
-                oa->write_character(to_char_type('i'));  // int8
-            }
-            write_number(static_cast<std::uint8_t>(n), use_bjdata);
-        }
-        else if (n <= (std::numeric_limits<std::uint8_t>::max)())
-        {
-            if (add_prefix)
-            {
-                oa->write_character(to_char_type('U'));  // uint8
-            }
-            write_number(static_cast<std::uint8_t>(n), use_bjdata);
-        }
-        else if (n <= static_cast<std::uint64_t>((std::numeric_limits<std::int16_t>::max)()))
-        {
-            if (add_prefix)
-            {
-                oa->write_character(to_char_type('I'));  // int16
-            }
-            write_number(static_cast<std::int16_t>(n), use_bjdata);
-        }
-        else if (use_bjdata && n <= static_cast<uint64_t>((std::numeric_limits<uint16_t>::max)()))
-        {
-            if (add_prefix)
-            {
-                oa->write_character(to_char_type('u'));  // uint16 - bjdata only
-            }
-            write_number(static_cast<std::uint16_t>(n), use_bjdata);
-        }
-        else if (n <= static_cast<std::uint64_t>((std::numeric_limits<std::int32_t>::max)()))
-        {
-            if (add_prefix)
-            {
-                oa->write_character(to_char_type('l'));  // int32
-            }
-            write_number(static_cast<std::int32_t>(n), use_bjdata);
-        }
-        else if (use_bjdata && n <= static_cast<uint64_t>((std::numeric_limits<uint32_t>::max)()))
-        {
-            if (add_prefix)
-            {
-                oa->write_character(to_char_type('m'));  // uint32 - bjdata only
-            }
-            write_number(static_cast<std::uint32_t>(n), use_bjdata);
-        }
-        else if (n <= static_cast<std::uint64_t>((std::numeric_limits<std::int64_t>::max)()))
-        {
-            if (add_prefix)
-            {
-                oa->write_character(to_char_type('L'));  // int64
-            }
-            write_number(static_cast<std::int64_t>(n), use_bjdata);
-        }
-        else if (use_bjdata && n <= (std::numeric_limits<uint64_t>::max)())
-        {
-            if (add_prefix)
-            {
-                oa->write_character(to_char_type('M'));  // uint64 - bjdata only
-            }
-            write_number(static_cast<std::uint64_t>(n), use_bjdata);
-        }
-        else
-        {
-            if (add_prefix)
-            {
-                oa->write_character(to_char_type('H'));  // high-precision number
-            }
-
-            const auto number = BasicJsonType(n).dump();
-            write_number_with_ubjson_prefix(number.size(), true, use_bjdata);
-            for (std::size_t i = 0; i < number.size(); ++i)
-            {
-                oa->write_character(to_char_type(static_cast<std::uint8_t>(number[i])));
-            }
-        }
-    }
-
-    // UBJSON: write number (signed integer)
-    template < typename NumberType, typename std::enable_if <
-                   std::is_signed<NumberType>::value&&
-                   !std::is_floating_point<NumberType>::value, int >::type = 0 >
-    void write_number_with_ubjson_prefix(const NumberType n,
-                                         const bool add_prefix,
-                                         const bool use_bjdata)
-    {
-        if ((std::numeric_limits<std::int8_t>::min)() <= n && n <= (std::numeric_limits<std::int8_t>::max)())
-        {
-            if (add_prefix)
-            {
-                oa->write_character(to_char_type('i'));  // int8
-            }
-            write_number(static_cast<std::int8_t>(n), use_bjdata);
-        }
-        else if (static_cast<std::int64_t>((std::numeric_limits<std::uint8_t>::min)()) <= n && n <= static_cast<std::int64_t>((std::numeric_limits<std::uint8_t>::max)()))
-        {
-            if (add_prefix)
-            {
-                oa->write_character(to_char_type('U'));  // uint8
-            }
-            write_number(static_cast<std::uint8_t>(n), use_bjdata);
-        }
-        else if ((std::numeric_limits<std::int16_t>::min)() <= n && n <= (std::numeric_limits<std::int16_t>::max)())
-        {
-            if (add_prefix)
-            {
-                oa->write_character(to_char_type('I'));  // int16
-            }
-            write_number(static_cast<std::int16_t>(n), use_bjdata);
-        }
-        else if (use_bjdata && (static_cast<std::int64_t>((std::numeric_limits<std::uint16_t>::min)()) <= n && n <= static_cast<std::int64_t>((std::numeric_limits<std::uint16_t>::max)())))
-        {
-            if (add_prefix)
-            {
-                oa->write_character(to_char_type('u'));  // uint16 - bjdata only
-            }
-            write_number(static_cast<uint16_t>(n), use_bjdata);
-        }
-        else if ((std::numeric_limits<std::int32_t>::min)() <= n && n <= (std::numeric_limits<std::int32_t>::max)())
-        {
-            if (add_prefix)
-            {
-                oa->write_character(to_char_type('l'));  // int32
-            }
-            write_number(static_cast<std::int32_t>(n), use_bjdata);
-        }
-        else if (use_bjdata && (static_cast<std::int64_t>((std::numeric_limits<std::uint32_t>::min)()) <= n && n <= static_cast<std::int64_t>((std::numeric_limits<std::uint32_t>::max)())))
-        {
-            if (add_prefix)
-            {
-                oa->write_character(to_char_type('m'));  // uint32 - bjdata only
-            }
-            write_number(static_cast<uint32_t>(n), use_bjdata);
-        }
-        else if ((std::numeric_limits<std::int64_t>::min)() <= n && n <= (std::numeric_limits<std::int64_t>::max)())
-        {
-            if (add_prefix)
-            {
-                oa->write_character(to_char_type('L'));  // int64
-            }
-            write_number(static_cast<std::int64_t>(n), use_bjdata);
-        }
-        // LCOV_EXCL_START
-        else
-        {
-            if (add_prefix)
-            {
-                oa->write_character(to_char_type('H'));  // high-precision number
-            }
-
-            const auto number = BasicJsonType(n).dump();
-            write_number_with_ubjson_prefix(number.size(), true, use_bjdata);
-            for (std::size_t i = 0; i < number.size(); ++i)
-            {
-                oa->write_character(to_char_type(static_cast<std::uint8_t>(number[i])));
-            }
-        }
-        // LCOV_EXCL_STOP
-    }
-
-    /*!
-    @brief determine the type prefix of container values
-    */
-    CharType ubjson_prefix(const BasicJsonType& j, const bool use_bjdata) const noexcept
-    {
-        switch (j.type())
-        {
-            case value_t::null:
-                return 'Z';
-
-            case value_t::boolean:
-                return j.m_data.m_value.boolean ? 'T' : 'F';
-
-            case value_t::number_integer:
-            {
-                if ((std::numeric_limits<std::int8_t>::min)() <= j.m_data.m_value.number_integer && j.m_data.m_value.number_integer <= (std::numeric_limits<std::int8_t>::max)())
-                {
-                    return 'i';
-                }
-                if ((std::numeric_limits<std::uint8_t>::min)() <= j.m_data.m_value.number_integer && j.m_data.m_value.number_integer <= (std::numeric_limits<std::uint8_t>::max)())
-                {
-                    return 'U';
-                }
-                if ((std::numeric_limits<std::int16_t>::min)() <= j.m_data.m_value.number_integer && j.m_data.m_value.number_integer <= (std::numeric_limits<std::int16_t>::max)())
-                {
-                    return 'I';
-                }
-                if (use_bjdata && ((std::numeric_limits<std::uint16_t>::min)() <= j.m_data.m_value.number_integer && j.m_data.m_value.number_integer <= (std::numeric_limits<std::uint16_t>::max)()))
-                {
-                    return 'u';
-                }
-                if ((std::numeric_limits<std::int32_t>::min)() <= j.m_data.m_value.number_integer && j.m_data.m_value.number_integer <= (std::numeric_limits<std::int32_t>::max)())
-                {
-                    return 'l';
-                }
-                if (use_bjdata && ((std::numeric_limits<std::uint32_t>::min)() <= j.m_data.m_value.number_integer && j.m_data.m_value.number_integer <= (std::numeric_limits<std::uint32_t>::max)()))
-                {
-                    return 'm';
-                }
-                if ((std::numeric_limits<std::int64_t>::min)() <= j.m_data.m_value.number_integer && j.m_data.m_value.number_integer <= (std::numeric_limits<std::int64_t>::max)())
-                {
-                    return 'L';
-                }
-                // anything else is treated as high-precision number
-                return 'H'; // LCOV_EXCL_LINE
-            }
-
-            case value_t::number_unsigned:
-            {
-                if (j.m_data.m_value.number_unsigned <= static_cast<std::uint64_t>((std::numeric_limits<std::int8_t>::max)()))
-                {
-                    return 'i';
-                }
-                if (j.m_data.m_value.number_unsigned <= static_cast<std::uint64_t>((std::numeric_limits<std::uint8_t>::max)()))
-                {
-                    return 'U';
-                }
-                if (j.m_data.m_value.number_unsigned <= static_cast<std::uint64_t>((std::numeric_limits<std::int16_t>::max)()))
-                {
-                    return 'I';
-                }
-                if (use_bjdata && j.m_data.m_value.number_unsigned <= static_cast<std::uint64_t>((std::numeric_limits<std::uint16_t>::max)()))
-                {
-                    return 'u';
-                }
-                if (j.m_data.m_value.number_unsigned <= static_cast<std::uint64_t>((std::numeric_limits<std::int32_t>::max)()))
-                {
-                    return 'l';
-                }
-                if (use_bjdata && j.m_data.m_value.number_unsigned <= static_cast<std::uint64_t>((std::numeric_limits<std::uint32_t>::max)()))
-                {
-                    return 'm';
-                }
-                if (j.m_data.m_value.number_unsigned <= static_cast<std::uint64_t>((std::numeric_limits<std::int64_t>::max)()))
-                {
-                    return 'L';
-                }
-                if (use_bjdata && j.m_data.m_value.number_unsigned <= (std::numeric_limits<std::uint64_t>::max)())
-                {
-                    return 'M';
-                }
-                // anything else is treated as high-precision number
-                return 'H'; // LCOV_EXCL_LINE
-            }
-
-            case value_t::number_float:
-                return get_ubjson_float_prefix(j.m_data.m_value.number_float);
-
-            case value_t::string:
-                return 'S';
-
-            case value_t::array: // fallthrough
-            case value_t::binary:
-                return '[';
-
-            case value_t::object:
-                return '{';
-
-            case value_t::discarded:
-            default:  // discarded values
-                return 'N';
-        }
-    }
-
-    static constexpr CharType get_ubjson_float_prefix(float /*unused*/)
-    {
-        return 'd';  // float 32
-    }
-
-    static constexpr CharType get_ubjson_float_prefix(double /*unused*/)
-    {
-        return 'D';  // float 64
-    }
-
-    /*!
-    @return false if the object is successfully converted to a bjdata ndarray, true if the type or size is invalid
-    */
-    bool write_bjdata_ndarray(const typename BasicJsonType::object_t& value, const bool use_count, const bool use_type)
-    {
-        std::map<string_t, CharType> bjdtype = {{"uint8", 'U'},  {"int8", 'i'},  {"uint16", 'u'}, {"int16", 'I'},
-            {"uint32", 'm'}, {"int32", 'l'}, {"uint64", 'M'}, {"int64", 'L'}, {"single", 'd'}, {"double", 'D'}, {"char", 'C'}
-        };
-
-        string_t key = "_ArrayType_";
-        auto it = bjdtype.find(static_cast<string_t>(value.at(key)));
-        if (it == bjdtype.end())
-        {
-            return true;
-        }
-        CharType dtype = it->second;
-
-        key = "_ArraySize_";
-        std::size_t len = (value.at(key).empty() ? 0 : 1);
-        for (const auto& el : value.at(key))
-        {
-            len *= static_cast<std::size_t>(el.m_data.m_value.number_unsigned);
-        }
-
-        key = "_ArrayData_";
-        if (value.at(key).size() != len)
-        {
-            return true;
-        }
-
-        oa->write_character('[');
-        oa->write_character('$');
-        oa->write_character(dtype);
-        oa->write_character('#');
-
-        key = "_ArraySize_";
-        write_ubjson(value.at(key), use_count, use_type, true,  true);
-
-        key = "_ArrayData_";
-        if (dtype == 'U' || dtype == 'C')
-        {
-            for (const auto& el : value.at(key))
-            {
-                write_number(static_cast<std::uint8_t>(el.m_data.m_value.number_unsigned), true);
-            }
-        }
-        else if (dtype == 'i')
-        {
-            for (const auto& el : value.at(key))
-            {
-                write_number(static_cast<std::int8_t>(el.m_data.m_value.number_integer), true);
-            }
-        }
-        else if (dtype == 'u')
-        {
-            for (const auto& el : value.at(key))
-            {
-                write_number(static_cast<std::uint16_t>(el.m_data.m_value.number_unsigned), true);
-            }
-        }
-        else if (dtype == 'I')
-        {
-            for (const auto& el : value.at(key))
-            {
-                write_number(static_cast<std::int16_t>(el.m_data.m_value.number_integer), true);
-            }
-        }
-        else if (dtype == 'm')
-        {
-            for (const auto& el : value.at(key))
-            {
-                write_number(static_cast<std::uint32_t>(el.m_data.m_value.number_unsigned), true);
-            }
-        }
-        else if (dtype == 'l')
-        {
-            for (const auto& el : value.at(key))
-            {
-                write_number(static_cast<std::int32_t>(el.m_data.m_value.number_integer), true);
-            }
-        }
-        else if (dtype == 'M')
-        {
-            for (const auto& el : value.at(key))
-            {
-                write_number(static_cast<std::uint64_t>(el.m_data.m_value.number_unsigned), true);
-            }
-        }
-        else if (dtype == 'L')
-        {
-            for (const auto& el : value.at(key))
-            {
-                write_number(static_cast<std::int64_t>(el.m_data.m_value.number_integer), true);
-            }
-        }
-        else if (dtype == 'd')
-        {
-            for (const auto& el : value.at(key))
-            {
-                write_number(static_cast<float>(el.m_data.m_value.number_float), true);
-            }
-        }
-        else if (dtype == 'D')
-        {
-            for (const auto& el : value.at(key))
-            {
-                write_number(static_cast<double>(el.m_data.m_value.number_float), true);
-            }
-        }
-        return false;
-    }
-
-    ///////////////////////
-    // Utility functions //
-    ///////////////////////
-
-    /*
-    @brief write a number to output input
-    @param[in] n number of type @a NumberType
-    @param[in] OutputIsLittleEndian Set to true if output data is
-                                 required to be little endian
-    @tparam NumberType the type of the number
-
-    @note This function needs to respect the system's endianness, because bytes
-          in CBOR, MessagePack, and UBJSON are stored in network order (big
-          endian) and therefore need reordering on little endian systems.
-          On the other hand, BSON and BJData use little endian and should reorder
-          on big endian systems.
-    */
-    template<typename NumberType>
-    void write_number(const NumberType n, const bool OutputIsLittleEndian = false)
-    {
-        // step 1: write number to array of length NumberType
-        std::array<CharType, sizeof(NumberType)> vec{};
-        std::memcpy(vec.data(), &n, sizeof(NumberType));
-
-        // step 2: write array to output (with possible reordering)
-        if (is_little_endian != OutputIsLittleEndian)
-        {
-            // reverse byte order prior to conversion if necessary
-            std::reverse(vec.begin(), vec.end());
-        }
-
-        oa->write_characters(vec.data(), sizeof(NumberType));
-    }
-
-    void write_compact_float(const number_float_t n, detail::input_format_t format)
-    {
-#ifdef __GNUC__
-#pragma GCC diagnostic push
-#pragma GCC diagnostic ignored "-Wfloat-equal"
-#endif
-        if (static_cast<double>(n) >= static_cast<double>(std::numeric_limits<float>::lowest()) &&
-                static_cast<double>(n) <= static_cast<double>((std::numeric_limits<float>::max)()) &&
-                static_cast<double>(static_cast<float>(n)) == static_cast<double>(n))
-        {
-            oa->write_character(format == detail::input_format_t::cbor
-                                ? get_cbor_float_prefix(static_cast<float>(n))
-                                : get_msgpack_float_prefix(static_cast<float>(n)));
-            write_number(static_cast<float>(n));
-        }
-        else
-        {
-            oa->write_character(format == detail::input_format_t::cbor
-                                ? get_cbor_float_prefix(n)
-                                : get_msgpack_float_prefix(n));
-            write_number(n);
-        }
-#ifdef __GNUC__
-#pragma GCC diagnostic pop
-#endif
-    }
-
-  public:
-    // The following to_char_type functions are implement the conversion
-    // between uint8_t and CharType. In case CharType is not unsigned,
-    // such a conversion is required to allow values greater than 128.
-    // See <https://github.com/nlohmann/json/issues/1286> for a discussion.
-    template < typename C = CharType,
-               enable_if_t < std::is_signed<C>::value && std::is_signed<char>::value > * = nullptr >
-    static constexpr CharType to_char_type(std::uint8_t x) noexcept
-    {
-        return *reinterpret_cast<char*>(&x);
-    }
-
-    template < typename C = CharType,
-               enable_if_t < std::is_signed<C>::value && std::is_unsigned<char>::value > * = nullptr >
-    static CharType to_char_type(std::uint8_t x) noexcept
-    {
-        static_assert(sizeof(std::uint8_t) == sizeof(CharType), "size of CharType must be equal to std::uint8_t");
-        static_assert(std::is_trivial<CharType>::value, "CharType must be trivial");
-        CharType result;
-        std::memcpy(&result, &x, sizeof(x));
-        return result;
-    }
-
-    template<typename C = CharType,
-             enable_if_t<std::is_unsigned<C>::value>* = nullptr>
-    static constexpr CharType to_char_type(std::uint8_t x) noexcept
-    {
-        return x;
-    }
-
-    template < typename InputCharType, typename C = CharType,
-               enable_if_t <
-                   std::is_signed<C>::value &&
-                   std::is_signed<char>::value &&
-                   std::is_same<char, typename std::remove_cv<InputCharType>::type>::value
-                   > * = nullptr >
-    static constexpr CharType to_char_type(InputCharType x) noexcept
-    {
-        return x;
-    }
-
-  private:
-    /// whether we can assume little endianness
-    const bool is_little_endian = little_endianness();
-
-    /// the output
-    output_adapter_t<CharType> oa = nullptr;
-};
-
-}  // namespace detail
-NLOHMANN_JSON_NAMESPACE_END
-
-// #include <nlohmann/detail/output/output_adapters.hpp>
-
-// #include <nlohmann/detail/output/serializer.hpp>
-//     __ _____ _____ _____
-//  __|  |   __|     |   | |  JSON for Modern C++
-// |  |  |__   |  |  | | | |  version 3.11.2
-// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
-//
-// SPDX-FileCopyrightText: 2008-2009 Björn Hoehrmann <bjoern@hoehrmann.de>
-// SPDX-FileCopyrightText: 2013-2022 Niels Lohmann <https://nlohmann.me>
-// SPDX-License-Identifier: MIT
-
-
-
-#include <algorithm> // reverse, remove, fill, find, none_of
-#include <array> // array
-#include <clocale> // localeconv, lconv
-#include <cmath> // labs, isfinite, isnan, signbit
-#include <cstddef> // size_t, ptrdiff_t
-#include <cstdint> // uint8_t
-#include <cstdio> // snprintf
-#include <limits> // numeric_limits
-#include <string> // string, char_traits
-#include <iomanip> // setfill, setw
-#include <type_traits> // is_same
-#include <utility> // move
-
-// #include <nlohmann/detail/conversions/to_chars.hpp>
-//     __ _____ _____ _____
-//  __|  |   __|     |   | |  JSON for Modern C++
-// |  |  |__   |  |  | | | |  version 3.11.2
-// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
-//
-// SPDX-FileCopyrightText: 2009 Florian Loitsch <https://florian.loitsch.com/>
-// SPDX-FileCopyrightText: 2013-2022 Niels Lohmann <https://nlohmann.me>
-// SPDX-License-Identifier: MIT
-
-
-
-#include <array> // array
-#include <cmath>   // signbit, isfinite
-#include <cstdint> // intN_t, uintN_t
-#include <cstring> // memcpy, memmove
-#include <limits> // numeric_limits
-#include <type_traits> // conditional
-
-// #include <nlohmann/detail/macro_scope.hpp>
-
-
-NLOHMANN_JSON_NAMESPACE_BEGIN
-namespace detail
-{
-
-/*!
-@brief implements the Grisu2 algorithm for binary to decimal floating-point
-conversion.
-
-This implementation is a slightly modified version of the reference
-implementation which may be obtained from
-http://florian.loitsch.com/publications (bench.tar.gz).
-
-The code is distributed under the MIT license, Copyright (c) 2009 Florian Loitsch.
-
-For a detailed description of the algorithm see:
-
-[1] Loitsch, "Printing Floating-Point Numbers Quickly and Accurately with
-    Integers", Proceedings of the ACM SIGPLAN 2010 Conference on Programming
-    Language Design and Implementation, PLDI 2010
-[2] Burger, Dybvig, "Printing Floating-Point Numbers Quickly and Accurately",
-    Proceedings of the ACM SIGPLAN 1996 Conference on Programming Language
-    Design and Implementation, PLDI 1996
-*/
-namespace dtoa_impl
-{
-
-template<typename Target, typename Source>
-Target reinterpret_bits(const Source source)
-{
-    static_assert(sizeof(Target) == sizeof(Source), "size mismatch");
-
-    Target target;
-    std::memcpy(&target, &source, sizeof(Source));
-    return target;
-}
-
-struct diyfp // f * 2^e
-{
-    static constexpr int kPrecision = 64; // = q
-
-    std::uint64_t f = 0;
-    int e = 0;
-
-    constexpr diyfp(std::uint64_t f_, int e_) noexcept : f(f_), e(e_) {}
-
-    /*!
-    @brief returns x - y
-    @pre x.e == y.e and x.f >= y.f
-    */
-    static diyfp sub(const diyfp& x, const diyfp& y) noexcept
-    {
-        JSON_ASSERT(x.e == y.e);
-        JSON_ASSERT(x.f >= y.f);
-
-        return {x.f - y.f, x.e};
-    }
-
-    /*!
-    @brief returns x * y
-    @note The result is rounded. (Only the upper q bits are returned.)
-    */
-    static diyfp mul(const diyfp& x, const diyfp& y) noexcept
-    {
-        static_assert(kPrecision == 64, "internal error");
-
-        // Computes:
-        //  f = round((x.f * y.f) / 2^q)
-        //  e = x.e + y.e + q
-
-        // Emulate the 64-bit * 64-bit multiplication:
-        //
-        // p = u * v
-        //   = (u_lo + 2^32 u_hi) (v_lo + 2^32 v_hi)
-        //   = (u_lo v_lo         ) + 2^32 ((u_lo v_hi         ) + (u_hi v_lo         )) + 2^64 (u_hi v_hi         )
-        //   = (p0                ) + 2^32 ((p1                ) + (p2                )) + 2^64 (p3                )
-        //   = (p0_lo + 2^32 p0_hi) + 2^32 ((p1_lo + 2^32 p1_hi) + (p2_lo + 2^32 p2_hi)) + 2^64 (p3                )
-        //   = (p0_lo             ) + 2^32 (p0_hi + p1_lo + p2_lo                      ) + 2^64 (p1_hi + p2_hi + p3)
-        //   = (p0_lo             ) + 2^32 (Q                                          ) + 2^64 (H                 )
-        //   = (p0_lo             ) + 2^32 (Q_lo + 2^32 Q_hi                           ) + 2^64 (H                 )
-        //
-        // (Since Q might be larger than 2^32 - 1)
-        //
-        //   = (p0_lo + 2^32 Q_lo) + 2^64 (Q_hi + H)
-        //
-        // (Q_hi + H does not overflow a 64-bit int)
-        //
-        //   = p_lo + 2^64 p_hi
-
-        const std::uint64_t u_lo = x.f & 0xFFFFFFFFu;
-        const std::uint64_t u_hi = x.f >> 32u;
-        const std::uint64_t v_lo = y.f & 0xFFFFFFFFu;
-        const std::uint64_t v_hi = y.f >> 32u;
-
-        const std::uint64_t p0 = u_lo * v_lo;
-        const std::uint64_t p1 = u_lo * v_hi;
-        const std::uint64_t p2 = u_hi * v_lo;
-        const std::uint64_t p3 = u_hi * v_hi;
-
-        const std::uint64_t p0_hi = p0 >> 32u;
-        const std::uint64_t p1_lo = p1 & 0xFFFFFFFFu;
-        const std::uint64_t p1_hi = p1 >> 32u;
-        const std::uint64_t p2_lo = p2 & 0xFFFFFFFFu;
-        const std::uint64_t p2_hi = p2 >> 32u;
-
-        std::uint64_t Q = p0_hi + p1_lo + p2_lo;
-
-        // The full product might now be computed as
-        //
-        // p_hi = p3 + p2_hi + p1_hi + (Q >> 32)
-        // p_lo = p0_lo + (Q << 32)
-        //
-        // But in this particular case here, the full p_lo is not required.
-        // Effectively we only need to add the highest bit in p_lo to p_hi (and
-        // Q_hi + 1 does not overflow).
-
-        Q += std::uint64_t{1} << (64u - 32u - 1u); // round, ties up
-
-        const std::uint64_t h = p3 + p2_hi + p1_hi + (Q >> 32u);
-
-        return {h, x.e + y.e + 64};
-    }
-
-    /*!
-    @brief normalize x such that the significand is >= 2^(q-1)
-    @pre x.f != 0
-    */
-    static diyfp normalize(diyfp x) noexcept
-    {
-        JSON_ASSERT(x.f != 0);
-
-        while ((x.f >> 63u) == 0)
-        {
-            x.f <<= 1u;
-            x.e--;
-        }
-
-        return x;
-    }
-
-    /*!
-    @brief normalize x such that the result has the exponent E
-    @pre e >= x.e and the upper e - x.e bits of x.f must be zero.
-    */
-    static diyfp normalize_to(const diyfp& x, const int target_exponent) noexcept
-    {
-        const int delta = x.e - target_exponent;
-
-        JSON_ASSERT(delta >= 0);
-        JSON_ASSERT(((x.f << delta) >> delta) == x.f);
-
-        return {x.f << delta, target_exponent};
-    }
-};
-
-struct boundaries
-{
-    diyfp w;
-    diyfp minus;
-    diyfp plus;
-};
-
-/*!
-Compute the (normalized) diyfp representing the input number 'value' and its
-boundaries.
-
-@pre value must be finite and positive
-*/
-template<typename FloatType>
-boundaries compute_boundaries(FloatType value)
-{
-    JSON_ASSERT(std::isfinite(value));
-    JSON_ASSERT(value > 0);
-
-    // Convert the IEEE representation into a diyfp.
-    //
-    // If v is denormal:
-    //      value = 0.F * 2^(1 - bias) = (          F) * 2^(1 - bias - (p-1))
-    // If v is normalized:
-    //      value = 1.F * 2^(E - bias) = (2^(p-1) + F) * 2^(E - bias - (p-1))
-
-    static_assert(std::numeric_limits<FloatType>::is_iec559,
-                  "internal error: dtoa_short requires an IEEE-754 floating-point implementation");
-
-    constexpr int      kPrecision = std::numeric_limits<FloatType>::digits; // = p (includes the hidden bit)
-    constexpr int      kBias      = std::numeric_limits<FloatType>::max_exponent - 1 + (kPrecision - 1);
-    constexpr int      kMinExp    = 1 - kBias;
-    constexpr std::uint64_t kHiddenBit = std::uint64_t{1} << (kPrecision - 1); // = 2^(p-1)
-
-    using bits_type = typename std::conditional<kPrecision == 24, std::uint32_t, std::uint64_t >::type;
-
-    const auto bits = static_cast<std::uint64_t>(reinterpret_bits<bits_type>(value));
-    const std::uint64_t E = bits >> (kPrecision - 1);
-    const std::uint64_t F = bits & (kHiddenBit - 1);
-
-    const bool is_denormal = E == 0;
-    const diyfp v = is_denormal
-                    ? diyfp(F, kMinExp)
-                    : diyfp(F + kHiddenBit, static_cast<int>(E) - kBias);
-
-    // Compute the boundaries m- and m+ of the floating-point value
-    // v = f * 2^e.
-    //
-    // Determine v- and v+, the floating-point predecessor and successor if v,
-    // respectively.
-    //
-    //      v- = v - 2^e        if f != 2^(p-1) or e == e_min                (A)
-    //         = v - 2^(e-1)    if f == 2^(p-1) and e > e_min                (B)
-    //
-    //      v+ = v + 2^e
-    //
-    // Let m- = (v- + v) / 2 and m+ = (v + v+) / 2. All real numbers _strictly_
-    // between m- and m+ round to v, regardless of how the input rounding
-    // algorithm breaks ties.
-    //
-    //      ---+-------------+-------------+-------------+-------------+---  (A)
-    //         v-            m-            v             m+            v+
-    //
-    //      -----------------+------+------+-------------+-------------+---  (B)
-    //                       v-     m-     v             m+            v+
-
-    const bool lower_boundary_is_closer = F == 0 && E > 1;
-    const diyfp m_plus = diyfp(2 * v.f + 1, v.e - 1);
-    const diyfp m_minus = lower_boundary_is_closer
-                          ? diyfp(4 * v.f - 1, v.e - 2)  // (B)
-                          : diyfp(2 * v.f - 1, v.e - 1); // (A)
-
-    // Determine the normalized w+ = m+.
-    const diyfp w_plus = diyfp::normalize(m_plus);
-
-    // Determine w- = m- such that e_(w-) = e_(w+).
-    const diyfp w_minus = diyfp::normalize_to(m_minus, w_plus.e);
-
-    return {diyfp::normalize(v), w_minus, w_plus};
-}
-
-// Given normalized diyfp w, Grisu needs to find a (normalized) cached
-// power-of-ten c, such that the exponent of the product c * w = f * 2^e lies
-// within a certain range [alpha, gamma] (Definition 3.2 from [1])
-//
-//      alpha <= e = e_c + e_w + q <= gamma
-//
-// or
-//
-//      f_c * f_w * 2^alpha <= f_c 2^(e_c) * f_w 2^(e_w) * 2^q
-//                          <= f_c * f_w * 2^gamma
-//
-// Since c and w are normalized, i.e. 2^(q-1) <= f < 2^q, this implies
-//
-//      2^(q-1) * 2^(q-1) * 2^alpha <= c * w * 2^q < 2^q * 2^q * 2^gamma
-//
-// or
-//
-//      2^(q - 2 + alpha) <= c * w < 2^(q + gamma)
-//
-// The choice of (alpha,gamma) determines the size of the table and the form of
-// the digit generation procedure. Using (alpha,gamma)=(-60,-32) works out well
-// in practice:
-//
-// The idea is to cut the number c * w = f * 2^e into two parts, which can be
-// processed independently: An integral part p1, and a fractional part p2:
-//
-//      f * 2^e = ( (f div 2^-e) * 2^-e + (f mod 2^-e) ) * 2^e
-//              = (f div 2^-e) + (f mod 2^-e) * 2^e
-//              = p1 + p2 * 2^e
-//
-// The conversion of p1 into decimal form requires a series of divisions and
-// modulos by (a power of) 10. These operations are faster for 32-bit than for
-// 64-bit integers, so p1 should ideally fit into a 32-bit integer. This can be
-// achieved by choosing
-//
-//      -e >= 32   or   e <= -32 := gamma
-//
-// In order to convert the fractional part
-//
-//      p2 * 2^e = p2 / 2^-e = d[-1] / 10^1 + d[-2] / 10^2 + ...
-//
-// into decimal form, the fraction is repeatedly multiplied by 10 and the digits
-// d[-i] are extracted in order:
-//
-//      (10 * p2) div 2^-e = d[-1]
-//      (10 * p2) mod 2^-e = d[-2] / 10^1 + ...
-//
-// The multiplication by 10 must not overflow. It is sufficient to choose
-//
-//      10 * p2 < 16 * p2 = 2^4 * p2 <= 2^64.
-//
-// Since p2 = f mod 2^-e < 2^-e,
-//
-//      -e <= 60   or   e >= -60 := alpha
-
-constexpr int kAlpha = -60;
-constexpr int kGamma = -32;
-
-struct cached_power // c = f * 2^e ~= 10^k
-{
-    std::uint64_t f;
-    int e;
-    int k;
-};
-
-/*!
-For a normalized diyfp w = f * 2^e, this function returns a (normalized) cached
-power-of-ten c = f_c * 2^e_c, such that the exponent of the product w * c
-satisfies (Definition 3.2 from [1])
-
-     alpha <= e_c + e + q <= gamma.
-*/
-inline cached_power get_cached_power_for_binary_exponent(int e)
-{
-    // Now
-    //
-    //      alpha <= e_c + e + q <= gamma                                    (1)
-    //      ==> f_c * 2^alpha <= c * 2^e * 2^q
-    //
-    // and since the c's are normalized, 2^(q-1) <= f_c,
-    //
-    //      ==> 2^(q - 1 + alpha) <= c * 2^(e + q)
-    //      ==> 2^(alpha - e - 1) <= c
-    //
-    // If c were an exact power of ten, i.e. c = 10^k, one may determine k as
-    //
-    //      k = ceil( log_10( 2^(alpha - e - 1) ) )
-    //        = ceil( (alpha - e - 1) * log_10(2) )
-    //
-    // From the paper:
-    // "In theory the result of the procedure could be wrong since c is rounded,
-    //  and the computation itself is approximated [...]. In practice, however,
-    //  this simple function is sufficient."
-    //
-    // For IEEE double precision floating-point numbers converted into
-    // normalized diyfp's w = f * 2^e, with q = 64,
-    //
-    //      e >= -1022      (min IEEE exponent)
-    //           -52        (p - 1)
-    //           -52        (p - 1, possibly normalize denormal IEEE numbers)
-    //           -11        (normalize the diyfp)
-    //         = -1137
-    //
-    // and
-    //
-    //      e <= +1023      (max IEEE exponent)
-    //           -52        (p - 1)
-    //           -11        (normalize the diyfp)
-    //         = 960
-    //
-    // This binary exponent range [-1137,960] results in a decimal exponent
-    // range [-307,324]. One does not need to store a cached power for each
-    // k in this range. For each such k it suffices to find a cached power
-    // such that the exponent of the product lies in [alpha,gamma].
-    // This implies that the difference of the decimal exponents of adjacent
-    // table entries must be less than or equal to
-    //
-    //      floor( (gamma - alpha) * log_10(2) ) = 8.
-    //
-    // (A smaller distance gamma-alpha would require a larger table.)
-
-    // NB:
-    // Actually this function returns c, such that -60 <= e_c + e + 64 <= -34.
-
-    constexpr int kCachedPowersMinDecExp = -300;
-    constexpr int kCachedPowersDecStep = 8;
-
-    static constexpr std::array<cached_power, 79> kCachedPowers =
-    {
-        {
-            { 0xAB70FE17C79AC6CA, -1060, -300 },
-            { 0xFF77B1FCBEBCDC4F, -1034, -292 },
-            { 0xBE5691EF416BD60C, -1007, -284 },
-            { 0x8DD01FAD907FFC3C,  -980, -276 },
-            { 0xD3515C2831559A83,  -954, -268 },
-            { 0x9D71AC8FADA6C9B5,  -927, -260 },
-            { 0xEA9C227723EE8BCB,  -901, -252 },
-            { 0xAECC49914078536D,  -874, -244 },
-            { 0x823C12795DB6CE57,  -847, -236 },
-            { 0xC21094364DFB5637,  -821, -228 },
-            { 0x9096EA6F3848984F,  -794, -220 },
-            { 0xD77485CB25823AC7,  -768, -212 },
-            { 0xA086CFCD97BF97F4,  -741, -204 },
-            { 0xEF340A98172AACE5,  -715, -196 },
-            { 0xB23867FB2A35B28E,  -688, -188 },
-            { 0x84C8D4DFD2C63F3B,  -661, -180 },
-            { 0xC5DD44271AD3CDBA,  -635, -172 },
-            { 0x936B9FCEBB25C996,  -608, -164 },
-            { 0xDBAC6C247D62A584,  -582, -156 },
-            { 0xA3AB66580D5FDAF6,  -555, -148 },
-            { 0xF3E2F893DEC3F126,  -529, -140 },
-            { 0xB5B5ADA8AAFF80B8,  -502, -132 },
-            { 0x87625F056C7C4A8B,  -475, -124 },
-            { 0xC9BCFF6034C13053,  -449, -116 },
-            { 0x964E858C91BA2655,  -422, -108 },
-            { 0xDFF9772470297EBD,  -396, -100 },
-            { 0xA6DFBD9FB8E5B88F,  -369,  -92 },
-            { 0xF8A95FCF88747D94,  -343,  -84 },
-            { 0xB94470938FA89BCF,  -316,  -76 },
-            { 0x8A08F0F8BF0F156B,  -289,  -68 },
-            { 0xCDB02555653131B6,  -263,  -60 },
-            { 0x993FE2C6D07B7FAC,  -236,  -52 },
-            { 0xE45C10C42A2B3B06,  -210,  -44 },
-            { 0xAA242499697392D3,  -183,  -36 },
-            { 0xFD87B5F28300CA0E,  -157,  -28 },
-            { 0xBCE5086492111AEB,  -130,  -20 },
-            { 0x8CBCCC096F5088CC,  -103,  -12 },
-            { 0xD1B71758E219652C,   -77,   -4 },
-            { 0x9C40000000000000,   -50,    4 },
-            { 0xE8D4A51000000000,   -24,   12 },
-            { 0xAD78EBC5AC620000,     3,   20 },
-            { 0x813F3978F8940984,    30,   28 },
-            { 0xC097CE7BC90715B3,    56,   36 },
-            { 0x8F7E32CE7BEA5C70,    83,   44 },
-            { 0xD5D238A4ABE98068,   109,   52 },
-            { 0x9F4F2726179A2245,   136,   60 },
-            { 0xED63A231D4C4FB27,   162,   68 },
-            { 0xB0DE65388CC8ADA8,   189,   76 },
-            { 0x83C7088E1AAB65DB,   216,   84 },
-            { 0xC45D1DF942711D9A,   242,   92 },
-            { 0x924D692CA61BE758,   269,  100 },
-            { 0xDA01EE641A708DEA,   295,  108 },
-            { 0xA26DA3999AEF774A,   322,  116 },
-            { 0xF209787BB47D6B85,   348,  124 },
-            { 0xB454E4A179DD1877,   375,  132 },
-            { 0x865B86925B9BC5C2,   402,  140 },
-            { 0xC83553C5C8965D3D,   428,  148 },
-            { 0x952AB45CFA97A0B3,   455,  156 },
-            { 0xDE469FBD99A05FE3,   481,  164 },
-            { 0xA59BC234DB398C25,   508,  172 },
-            { 0xF6C69A72A3989F5C,   534,  180 },
-            { 0xB7DCBF5354E9BECE,   561,  188 },
-            { 0x88FCF317F22241E2,   588,  196 },
-            { 0xCC20CE9BD35C78A5,   614,  204 },
-            { 0x98165AF37B2153DF,   641,  212 },
-            { 0xE2A0B5DC971F303A,   667,  220 },
-            { 0xA8D9D1535CE3B396,   694,  228 },
-            { 0xFB9B7CD9A4A7443C,   720,  236 },
-            { 0xBB764C4CA7A44410,   747,  244 },
-            { 0x8BAB8EEFB6409C1A,   774,  252 },
-            { 0xD01FEF10A657842C,   800,  260 },
-            { 0x9B10A4E5E9913129,   827,  268 },
-            { 0xE7109BFBA19C0C9D,   853,  276 },
-            { 0xAC2820D9623BF429,   880,  284 },
-            { 0x80444B5E7AA7CF85,   907,  292 },
-            { 0xBF21E44003ACDD2D,   933,  300 },
-            { 0x8E679C2F5E44FF8F,   960,  308 },
-            { 0xD433179D9C8CB841,   986,  316 },
-            { 0x9E19DB92B4E31BA9,  1013,  324 },
-        }
-    };
-
-    // This computation gives exactly the same results for k as
-    //      k = ceil((kAlpha - e - 1) * 0.30102999566398114)
-    // for |e| <= 1500, but doesn't require floating-point operations.
-    // NB: log_10(2) ~= 78913 / 2^18
-    JSON_ASSERT(e >= -1500);
-    JSON_ASSERT(e <=  1500);
-    const int f = kAlpha - e - 1;
-    const int k = (f * 78913) / (1 << 18) + static_cast<int>(f > 0);
-
-    const int index = (-kCachedPowersMinDecExp + k + (kCachedPowersDecStep - 1)) / kCachedPowersDecStep;
-    JSON_ASSERT(index >= 0);
-    JSON_ASSERT(static_cast<std::size_t>(index) < kCachedPowers.size());
-
-    const cached_power cached = kCachedPowers[static_cast<std::size_t>(index)];
-    JSON_ASSERT(kAlpha <= cached.e + e + 64);
-    JSON_ASSERT(kGamma >= cached.e + e + 64);
-
-    return cached;
-}
-
-/*!
-For n != 0, returns k, such that pow10 := 10^(k-1) <= n < 10^k.
-For n == 0, returns 1 and sets pow10 := 1.
-*/
-inline int find_largest_pow10(const std::uint32_t n, std::uint32_t& pow10)
-{
-    // LCOV_EXCL_START
-    if (n >= 1000000000)
-    {
-        pow10 = 1000000000;
-        return 10;
-    }
-    // LCOV_EXCL_STOP
-    if (n >= 100000000)
-    {
-        pow10 = 100000000;
-        return  9;
-    }
-    if (n >= 10000000)
-    {
-        pow10 = 10000000;
-        return  8;
-    }
-    if (n >= 1000000)
-    {
-        pow10 = 1000000;
-        return  7;
-    }
-    if (n >= 100000)
-    {
-        pow10 = 100000;
-        return  6;
-    }
-    if (n >= 10000)
-    {
-        pow10 = 10000;
-        return  5;
-    }
-    if (n >= 1000)
-    {
-        pow10 = 1000;
-        return  4;
-    }
-    if (n >= 100)
-    {
-        pow10 = 100;
-        return  3;
-    }
-    if (n >= 10)
-    {
-        pow10 = 10;
-        return  2;
-    }
-
-    pow10 = 1;
-    return 1;
-}
-
-inline void grisu2_round(char* buf, int len, std::uint64_t dist, std::uint64_t delta,
-                         std::uint64_t rest, std::uint64_t ten_k)
-{
-    JSON_ASSERT(len >= 1);
-    JSON_ASSERT(dist <= delta);
-    JSON_ASSERT(rest <= delta);
-    JSON_ASSERT(ten_k > 0);
-
-    //               <--------------------------- delta ---->
-    //                                  <---- dist --------->
-    // --------------[------------------+-------------------]--------------
-    //               M-                 w                   M+
-    //
-    //                                  ten_k
-    //                                <------>
-    //                                       <---- rest ---->
-    // --------------[------------------+----+--------------]--------------
-    //                                  w    V
-    //                                       = buf * 10^k
-    //
-    // ten_k represents a unit-in-the-last-place in the decimal representation
-    // stored in buf.
-    // Decrement buf by ten_k while this takes buf closer to w.
-
-    // The tests are written in this order to avoid overflow in unsigned
-    // integer arithmetic.
-
-    while (rest < dist
-            && delta - rest >= ten_k
-            && (rest + ten_k < dist || dist - rest > rest + ten_k - dist))
-    {
-        JSON_ASSERT(buf[len - 1] != '0');
-        buf[len - 1]--;
-        rest += ten_k;
-    }
-}
-
-/*!
-Generates V = buffer * 10^decimal_exponent, such that M- <= V <= M+.
-M- and M+ must be normalized and share the same exponent -60 <= e <= -32.
-*/
-inline void grisu2_digit_gen(char* buffer, int& length, int& decimal_exponent,
-                             diyfp M_minus, diyfp w, diyfp M_plus)
-{
-    static_assert(kAlpha >= -60, "internal error");
-    static_assert(kGamma <= -32, "internal error");
-
-    // Generates the digits (and the exponent) of a decimal floating-point
-    // number V = buffer * 10^decimal_exponent in the range [M-, M+]. The diyfp's
-    // w, M- and M+ share the same exponent e, which satisfies alpha <= e <= gamma.
-    //
-    //               <--------------------------- delta ---->
-    //                                  <---- dist --------->
-    // --------------[------------------+-------------------]--------------
-    //               M-                 w                   M+
-    //
-    // Grisu2 generates the digits of M+ from left to right and stops as soon as
-    // V is in [M-,M+].
-
-    JSON_ASSERT(M_plus.e >= kAlpha);
-    JSON_ASSERT(M_plus.e <= kGamma);
-
-    std::uint64_t delta = diyfp::sub(M_plus, M_minus).f; // (significand of (M+ - M-), implicit exponent is e)
-    std::uint64_t dist  = diyfp::sub(M_plus, w      ).f; // (significand of (M+ - w ), implicit exponent is e)
-
-    // Split M+ = f * 2^e into two parts p1 and p2 (note: e < 0):
-    //
-    //      M+ = f * 2^e
-    //         = ((f div 2^-e) * 2^-e + (f mod 2^-e)) * 2^e
-    //         = ((p1        ) * 2^-e + (p2        )) * 2^e
-    //         = p1 + p2 * 2^e
-
-    const diyfp one(std::uint64_t{1} << -M_plus.e, M_plus.e);
-
-    auto p1 = static_cast<std::uint32_t>(M_plus.f >> -one.e); // p1 = f div 2^-e (Since -e >= 32, p1 fits into a 32-bit int.)
-    std::uint64_t p2 = M_plus.f & (one.f - 1);                    // p2 = f mod 2^-e
-
-    // 1)
-    //
-    // Generate the digits of the integral part p1 = d[n-1]...d[1]d[0]
-
-    JSON_ASSERT(p1 > 0);
-
-    std::uint32_t pow10{};
-    const int k = find_largest_pow10(p1, pow10);
-
-    //      10^(k-1) <= p1 < 10^k, pow10 = 10^(k-1)
-    //
-    //      p1 = (p1 div 10^(k-1)) * 10^(k-1) + (p1 mod 10^(k-1))
-    //         = (d[k-1]         ) * 10^(k-1) + (p1 mod 10^(k-1))
-    //
-    //      M+ = p1                                             + p2 * 2^e
-    //         = d[k-1] * 10^(k-1) + (p1 mod 10^(k-1))          + p2 * 2^e
-    //         = d[k-1] * 10^(k-1) + ((p1 mod 10^(k-1)) * 2^-e + p2) * 2^e
-    //         = d[k-1] * 10^(k-1) + (                         rest) * 2^e
-    //
-    // Now generate the digits d[n] of p1 from left to right (n = k-1,...,0)
-    //
-    //      p1 = d[k-1]...d[n] * 10^n + d[n-1]...d[0]
-    //
-    // but stop as soon as
-    //
-    //      rest * 2^e = (d[n-1]...d[0] * 2^-e + p2) * 2^e <= delta * 2^e
-
-    int n = k;
-    while (n > 0)
-    {
-        // Invariants:
-        //      M+ = buffer * 10^n + (p1 + p2 * 2^e)    (buffer = 0 for n = k)
-        //      pow10 = 10^(n-1) <= p1 < 10^n
-        //
-        const std::uint32_t d = p1 / pow10;  // d = p1 div 10^(n-1)
-        const std::uint32_t r = p1 % pow10;  // r = p1 mod 10^(n-1)
-        //
-        //      M+ = buffer * 10^n + (d * 10^(n-1) + r) + p2 * 2^e
-        //         = (buffer * 10 + d) * 10^(n-1) + (r + p2 * 2^e)
-        //
-        JSON_ASSERT(d <= 9);
-        buffer[length++] = static_cast<char>('0' + d); // buffer := buffer * 10 + d
-        //
-        //      M+ = buffer * 10^(n-1) + (r + p2 * 2^e)
-        //
-        p1 = r;
-        n--;
-        //
-        //      M+ = buffer * 10^n + (p1 + p2 * 2^e)
-        //      pow10 = 10^n
-        //
-
-        // Now check if enough digits have been generated.
-        // Compute
-        //
-        //      p1 + p2 * 2^e = (p1 * 2^-e + p2) * 2^e = rest * 2^e
-        //
-        // Note:
-        // Since rest and delta share the same exponent e, it suffices to
-        // compare the significands.
-        const std::uint64_t rest = (std::uint64_t{p1} << -one.e) + p2;
-        if (rest <= delta)
-        {
-            // V = buffer * 10^n, with M- <= V <= M+.
-
-            decimal_exponent += n;
-
-            // We may now just stop. But instead look if the buffer could be
-            // decremented to bring V closer to w.
-            //
-            // pow10 = 10^n is now 1 ulp in the decimal representation V.
-            // The rounding procedure works with diyfp's with an implicit
-            // exponent of e.
-            //
-            //      10^n = (10^n * 2^-e) * 2^e = ulp * 2^e
-            //
-            const std::uint64_t ten_n = std::uint64_t{pow10} << -one.e;
-            grisu2_round(buffer, length, dist, delta, rest, ten_n);
-
-            return;
-        }
-
-        pow10 /= 10;
-        //
-        //      pow10 = 10^(n-1) <= p1 < 10^n
-        // Invariants restored.
-    }
-
-    // 2)
-    //
-    // The digits of the integral part have been generated:
-    //
-    //      M+ = d[k-1]...d[1]d[0] + p2 * 2^e
-    //         = buffer            + p2 * 2^e
-    //
-    // Now generate the digits of the fractional part p2 * 2^e.
-    //
-    // Note:
-    // No decimal point is generated: the exponent is adjusted instead.
-    //
-    // p2 actually represents the fraction
-    //
-    //      p2 * 2^e
-    //          = p2 / 2^-e
-    //          = d[-1] / 10^1 + d[-2] / 10^2 + ...
-    //
-    // Now generate the digits d[-m] of p1 from left to right (m = 1,2,...)
-    //
-    //      p2 * 2^e = d[-1]d[-2]...d[-m] * 10^-m
-    //                      + 10^-m * (d[-m-1] / 10^1 + d[-m-2] / 10^2 + ...)
-    //
-    // using
-    //
-    //      10^m * p2 = ((10^m * p2) div 2^-e) * 2^-e + ((10^m * p2) mod 2^-e)
-    //                = (                   d) * 2^-e + (                   r)
-    //
-    // or
-    //      10^m * p2 * 2^e = d + r * 2^e
-    //
-    // i.e.
-    //
-    //      M+ = buffer + p2 * 2^e
-    //         = buffer + 10^-m * (d + r * 2^e)
-    //         = (buffer * 10^m + d) * 10^-m + 10^-m * r * 2^e
-    //
-    // and stop as soon as 10^-m * r * 2^e <= delta * 2^e
-
-    JSON_ASSERT(p2 > delta);
-
-    int m = 0;
-    for (;;)
-    {
-        // Invariant:
-        //      M+ = buffer * 10^-m + 10^-m * (d[-m-1] / 10 + d[-m-2] / 10^2 + ...) * 2^e
-        //         = buffer * 10^-m + 10^-m * (p2                                 ) * 2^e
-        //         = buffer * 10^-m + 10^-m * (1/10 * (10 * p2)                   ) * 2^e
-        //         = buffer * 10^-m + 10^-m * (1/10 * ((10*p2 div 2^-e) * 2^-e + (10*p2 mod 2^-e)) * 2^e
-        //
-        JSON_ASSERT(p2 <= (std::numeric_limits<std::uint64_t>::max)() / 10);
-        p2 *= 10;
-        const std::uint64_t d = p2 >> -one.e;     // d = (10 * p2) div 2^-e
-        const std::uint64_t r = p2 & (one.f - 1); // r = (10 * p2) mod 2^-e
-        //
-        //      M+ = buffer * 10^-m + 10^-m * (1/10 * (d * 2^-e + r) * 2^e
-        //         = buffer * 10^-m + 10^-m * (1/10 * (d + r * 2^e))
-        //         = (buffer * 10 + d) * 10^(-m-1) + 10^(-m-1) * r * 2^e
-        //
-        JSON_ASSERT(d <= 9);
-        buffer[length++] = static_cast<char>('0' + d); // buffer := buffer * 10 + d
-        //
-        //      M+ = buffer * 10^(-m-1) + 10^(-m-1) * r * 2^e
-        //
-        p2 = r;
-        m++;
-        //
-        //      M+ = buffer * 10^-m + 10^-m * p2 * 2^e
-        // Invariant restored.
-
-        // Check if enough digits have been generated.
-        //
-        //      10^-m * p2 * 2^e <= delta * 2^e
-        //              p2 * 2^e <= 10^m * delta * 2^e
-        //                    p2 <= 10^m * delta
-        delta *= 10;
-        dist  *= 10;
-        if (p2 <= delta)
-        {
-            break;
-        }
-    }
-
-    // V = buffer * 10^-m, with M- <= V <= M+.
-
-    decimal_exponent -= m;
-
-    // 1 ulp in the decimal representation is now 10^-m.
-    // Since delta and dist are now scaled by 10^m, we need to do the
-    // same with ulp in order to keep the units in sync.
-    //
-    //      10^m * 10^-m = 1 = 2^-e * 2^e = ten_m * 2^e
-    //
-    const std::uint64_t ten_m = one.f;
-    grisu2_round(buffer, length, dist, delta, p2, ten_m);
-
-    // By construction this algorithm generates the shortest possible decimal
-    // number (Loitsch, Theorem 6.2) which rounds back to w.
-    // For an input number of precision p, at least
-    //
-    //      N = 1 + ceil(p * log_10(2))
-    //
-    // decimal digits are sufficient to identify all binary floating-point
-    // numbers (Matula, "In-and-Out conversions").
-    // This implies that the algorithm does not produce more than N decimal
-    // digits.
-    //
-    //      N = 17 for p = 53 (IEEE double precision)
-    //      N = 9  for p = 24 (IEEE single precision)
-}
-
-/*!
-v = buf * 10^decimal_exponent
-len is the length of the buffer (number of decimal digits)
-The buffer must be large enough, i.e. >= max_digits10.
-*/
-JSON_HEDLEY_NON_NULL(1)
-inline void grisu2(char* buf, int& len, int& decimal_exponent,
-                   diyfp m_minus, diyfp v, diyfp m_plus)
-{
-    JSON_ASSERT(m_plus.e == m_minus.e);
-    JSON_ASSERT(m_plus.e == v.e);
-
-    //  --------(-----------------------+-----------------------)--------    (A)
-    //          m-                      v                       m+
-    //
-    //  --------------------(-----------+-----------------------)--------    (B)
-    //                      m-          v                       m+
-    //
-    // First scale v (and m- and m+) such that the exponent is in the range
-    // [alpha, gamma].
-
-    const cached_power cached = get_cached_power_for_binary_exponent(m_plus.e);
-
-    const diyfp c_minus_k(cached.f, cached.e); // = c ~= 10^-k
-
-    // The exponent of the products is = v.e + c_minus_k.e + q and is in the range [alpha,gamma]
-    const diyfp w       = diyfp::mul(v,       c_minus_k);
-    const diyfp w_minus = diyfp::mul(m_minus, c_minus_k);
-    const diyfp w_plus  = diyfp::mul(m_plus,  c_minus_k);
-
-    //  ----(---+---)---------------(---+---)---------------(---+---)----
-    //          w-                      w                       w+
-    //          = c*m-                  = c*v                   = c*m+
-    //
-    // diyfp::mul rounds its result and c_minus_k is approximated too. w, w- and
-    // w+ are now off by a small amount.
-    // In fact:
-    //
-    //      w - v * 10^k < 1 ulp
-    //
-    // To account for this inaccuracy, add resp. subtract 1 ulp.
-    //
-    //  --------+---[---------------(---+---)---------------]---+--------
-    //          w-  M-                  w                   M+  w+
-    //
-    // Now any number in [M-, M+] (bounds included) will round to w when input,
-    // regardless of how the input rounding algorithm breaks ties.
-    //
-    // And digit_gen generates the shortest possible such number in [M-, M+].
-    // Note that this does not mean that Grisu2 always generates the shortest
-    // possible number in the interval (m-, m+).
-    const diyfp M_minus(w_minus.f + 1, w_minus.e);
-    const diyfp M_plus (w_plus.f  - 1, w_plus.e );
-
-    decimal_exponent = -cached.k; // = -(-k) = k
-
-    grisu2_digit_gen(buf, len, decimal_exponent, M_minus, w, M_plus);
-}
-
-/*!
-v = buf * 10^decimal_exponent
-len is the length of the buffer (number of decimal digits)
-The buffer must be large enough, i.e. >= max_digits10.
-*/
-template<typename FloatType>
-JSON_HEDLEY_NON_NULL(1)
-void grisu2(char* buf, int& len, int& decimal_exponent, FloatType value)
-{
-    static_assert(diyfp::kPrecision >= std::numeric_limits<FloatType>::digits + 3,
-                  "internal error: not enough precision");
-
-    JSON_ASSERT(std::isfinite(value));
-    JSON_ASSERT(value > 0);
-
-    // If the neighbors (and boundaries) of 'value' are always computed for double-precision
-    // numbers, all float's can be recovered using strtod (and strtof). However, the resulting
-    // decimal representations are not exactly "short".
-    //
-    // The documentation for 'std::to_chars' (https://en.cppreference.com/w/cpp/utility/to_chars)
-    // says "value is converted to a string as if by std::sprintf in the default ("C") locale"
-    // and since sprintf promotes floats to doubles, I think this is exactly what 'std::to_chars'
-    // does.
-    // On the other hand, the documentation for 'std::to_chars' requires that "parsing the
-    // representation using the corresponding std::from_chars function recovers value exactly". That
-    // indicates that single precision floating-point numbers should be recovered using
-    // 'std::strtof'.
-    //
-    // NB: If the neighbors are computed for single-precision numbers, there is a single float
-    //     (7.0385307e-26f) which can't be recovered using strtod. The resulting double precision
-    //     value is off by 1 ulp.
-#if 0
-    const boundaries w = compute_boundaries(static_cast<double>(value));
-#else
-    const boundaries w = compute_boundaries(value);
-#endif
-
-    grisu2(buf, len, decimal_exponent, w.minus, w.w, w.plus);
-}
-
-/*!
-@brief appends a decimal representation of e to buf
-@return a pointer to the element following the exponent.
-@pre -1000 < e < 1000
-*/
-JSON_HEDLEY_NON_NULL(1)
-JSON_HEDLEY_RETURNS_NON_NULL
-inline char* append_exponent(char* buf, int e)
-{
-    JSON_ASSERT(e > -1000);
-    JSON_ASSERT(e <  1000);
-
-    if (e < 0)
-    {
-        e = -e;
-        *buf++ = '-';
-    }
-    else
-    {
-        *buf++ = '+';
-    }
-
-    auto k = static_cast<std::uint32_t>(e);
-    if (k < 10)
-    {
-        // Always print at least two digits in the exponent.
-        // This is for compatibility with printf("%g").
-        *buf++ = '0';
-        *buf++ = static_cast<char>('0' + k);
-    }
-    else if (k < 100)
-    {
-        *buf++ = static_cast<char>('0' + k / 10);
-        k %= 10;
-        *buf++ = static_cast<char>('0' + k);
-    }
-    else
-    {
-        *buf++ = static_cast<char>('0' + k / 100);
-        k %= 100;
-        *buf++ = static_cast<char>('0' + k / 10);
-        k %= 10;
-        *buf++ = static_cast<char>('0' + k);
-    }
-
-    return buf;
-}
-
-/*!
-@brief prettify v = buf * 10^decimal_exponent
-
-If v is in the range [10^min_exp, 10^max_exp) it will be printed in fixed-point
-notation. Otherwise it will be printed in exponential notation.
-
-@pre min_exp < 0
-@pre max_exp > 0
-*/
-JSON_HEDLEY_NON_NULL(1)
-JSON_HEDLEY_RETURNS_NON_NULL
-inline char* format_buffer(char* buf, int len, int decimal_exponent,
-                           int min_exp, int max_exp)
-{
-    JSON_ASSERT(min_exp < 0);
-    JSON_ASSERT(max_exp > 0);
-
-    const int k = len;
-    const int n = len + decimal_exponent;
-
-    // v = buf * 10^(n-k)
-    // k is the length of the buffer (number of decimal digits)
-    // n is the position of the decimal point relative to the start of the buffer.
-
-    if (k <= n && n <= max_exp)
-    {
-        // digits[000]
-        // len <= max_exp + 2
-
-        std::memset(buf + k, '0', static_cast<size_t>(n) - static_cast<size_t>(k));
-        // Make it look like a floating-point number (#362, #378)
-        buf[n + 0] = '.';
-        buf[n + 1] = '0';
-        return buf + (static_cast<size_t>(n) + 2);
-    }
-
-    if (0 < n && n <= max_exp)
-    {
-        // dig.its
-        // len <= max_digits10 + 1
-
-        JSON_ASSERT(k > n);
-
-        std::memmove(buf + (static_cast<size_t>(n) + 1), buf + n, static_cast<size_t>(k) - static_cast<size_t>(n));
-        buf[n] = '.';
-        return buf + (static_cast<size_t>(k) + 1U);
-    }
-
-    if (min_exp < n && n <= 0)
-    {
-        // 0.[000]digits
-        // len <= 2 + (-min_exp - 1) + max_digits10
-
-        std::memmove(buf + (2 + static_cast<size_t>(-n)), buf, static_cast<size_t>(k));
-        buf[0] = '0';
-        buf[1] = '.';
-        std::memset(buf + 2, '0', static_cast<size_t>(-n));
-        return buf + (2U + static_cast<size_t>(-n) + static_cast<size_t>(k));
-    }
-
-    if (k == 1)
-    {
-        // dE+123
-        // len <= 1 + 5
-
-        buf += 1;
-    }
-    else
-    {
-        // d.igitsE+123
-        // len <= max_digits10 + 1 + 5
-
-        std::memmove(buf + 2, buf + 1, static_cast<size_t>(k) - 1);
-        buf[1] = '.';
-        buf += 1 + static_cast<size_t>(k);
-    }
-
-    *buf++ = 'e';
-    return append_exponent(buf, n - 1);
-}
-
-}  // namespace dtoa_impl
-
-/*!
-@brief generates a decimal representation of the floating-point number value in [first, last).
-
-The format of the resulting decimal representation is similar to printf's %g
-format. Returns an iterator pointing past-the-end of the decimal representation.
-
-@note The input number must be finite, i.e. NaN's and Inf's are not supported.
-@note The buffer must be large enough.
-@note The result is NOT null-terminated.
-*/
-template<typename FloatType>
-JSON_HEDLEY_NON_NULL(1, 2)
-JSON_HEDLEY_RETURNS_NON_NULL
-char* to_chars(char* first, const char* last, FloatType value)
-{
-    static_cast<void>(last); // maybe unused - fix warning
-    JSON_ASSERT(std::isfinite(value));
-
-    // Use signbit(value) instead of (value < 0) since signbit works for -0.
-    if (std::signbit(value))
-    {
-        value = -value;
-        *first++ = '-';
-    }
-
-#ifdef __GNUC__
-#pragma GCC diagnostic push
-#pragma GCC diagnostic ignored "-Wfloat-equal"
-#endif
-    if (value == 0) // +-0
-    {
-        *first++ = '0';
-        // Make it look like a floating-point number (#362, #378)
-        *first++ = '.';
-        *first++ = '0';
-        return first;
-    }
-#ifdef __GNUC__
-#pragma GCC diagnostic pop
-#endif
-
-    JSON_ASSERT(last - first >= std::numeric_limits<FloatType>::max_digits10);
-
-    // Compute v = buffer * 10^decimal_exponent.
-    // The decimal digits are stored in the buffer, which needs to be interpreted
-    // as an unsigned decimal integer.
-    // len is the length of the buffer, i.e. the number of decimal digits.
-    int len = 0;
-    int decimal_exponent = 0;
-    dtoa_impl::grisu2(first, len, decimal_exponent, value);
-
-    JSON_ASSERT(len <= std::numeric_limits<FloatType>::max_digits10);
-
-    // Format the buffer like printf("%.*g", prec, value)
-    constexpr int kMinExp = -4;
-    // Use digits10 here to increase compatibility with version 2.
-    constexpr int kMaxExp = std::numeric_limits<FloatType>::digits10;
-
-    JSON_ASSERT(last - first >= kMaxExp + 2);
-    JSON_ASSERT(last - first >= 2 + (-kMinExp - 1) + std::numeric_limits<FloatType>::max_digits10);
-    JSON_ASSERT(last - first >= std::numeric_limits<FloatType>::max_digits10 + 6);
-
-    return dtoa_impl::format_buffer(first, len, decimal_exponent, kMinExp, kMaxExp);
-}
-
-}  // namespace detail
-NLOHMANN_JSON_NAMESPACE_END
-
-// #include <nlohmann/detail/exceptions.hpp>
-
-// #include <nlohmann/detail/macro_scope.hpp>
-
-// #include <nlohmann/detail/meta/cpp_future.hpp>
-
-// #include <nlohmann/detail/output/binary_writer.hpp>
-
-// #include <nlohmann/detail/output/output_adapters.hpp>
-
-// #include <nlohmann/detail/string_concat.hpp>
-
-// #include <nlohmann/detail/value_t.hpp>
-
-
-NLOHMANN_JSON_NAMESPACE_BEGIN
-namespace detail
-{
-
-///////////////////
-// serialization //
-///////////////////
-
-/// how to treat decoding errors
-enum class error_handler_t
-{
-    strict,  ///< throw a type_error exception in case of invalid UTF-8
-    replace, ///< replace invalid UTF-8 sequences with U+FFFD
-    ignore   ///< ignore invalid UTF-8 sequences
-};
-
-template<typename BasicJsonType>
-class serializer
-{
-    using string_t = typename BasicJsonType::string_t;
-    using number_float_t = typename BasicJsonType::number_float_t;
-    using number_integer_t = typename BasicJsonType::number_integer_t;
-    using number_unsigned_t = typename BasicJsonType::number_unsigned_t;
-    using binary_char_t = typename BasicJsonType::binary_t::value_type;
-    static constexpr std::uint8_t UTF8_ACCEPT = 0;
-    static constexpr std::uint8_t UTF8_REJECT = 1;
-
-  public:
-    /*!
-    @param[in] s  output stream to serialize to
-    @param[in] ichar  indentation character to use
-    @param[in] error_handler_  how to react on decoding errors
-    */
-    serializer(output_adapter_t<char> s, const char ichar,
-               error_handler_t error_handler_ = error_handler_t::strict)
-        : o(std::move(s))
-        , loc(std::localeconv())
-        , thousands_sep(loc->thousands_sep == nullptr ? '\0' : std::char_traits<char>::to_char_type(* (loc->thousands_sep)))
-        , decimal_point(loc->decimal_point == nullptr ? '\0' : std::char_traits<char>::to_char_type(* (loc->decimal_point)))
-        , indent_char(ichar)
-        , indent_string(512, indent_char)
-        , error_handler(error_handler_)
-    {}
-
-    // delete because of pointer members
-    serializer(const serializer&) = delete;
-    serializer& operator=(const serializer&) = delete;
-    serializer(serializer&&) = delete;
-    serializer& operator=(serializer&&) = delete;
-    ~serializer() = default;
-
-    /*!
-    @brief internal implementation of the serialization function
-
-    This function is called by the public member function dump and organizes
-    the serialization internally. The indentation level is propagated as
-    additional parameter. In case of arrays and objects, the function is
-    called recursively.
-
-    - strings and object keys are escaped using `escape_string()`
-    - integer numbers are converted implicitly via `operator<<`
-    - floating-point numbers are converted to a string using `"%g"` format
-    - binary values are serialized as objects containing the subtype and the
-      byte array
-
-    @param[in] val               value to serialize
-    @param[in] pretty_print      whether the output shall be pretty-printed
-    @param[in] ensure_ascii If @a ensure_ascii is true, all non-ASCII characters
-    in the output are escaped with `\uXXXX` sequences, and the result consists
-    of ASCII characters only.
-    @param[in] indent_step       the indent level
-    @param[in] current_indent    the current indent level (only used internally)
-    */
-    void dump(const BasicJsonType& val,
-              const bool pretty_print,
-              const bool ensure_ascii,
-              const unsigned int indent_step,
-              const unsigned int current_indent = 0)
-    {
-        switch (val.m_data.m_type)
-        {
-            case value_t::object:
-            {
-                if (val.m_data.m_value.object->empty())
-                {
-                    o->write_characters("{}", 2);
-                    return;
-                }
-
-                if (pretty_print)
-                {
-                    o->write_characters("{\n", 2);
-
-                    // variable to hold indentation for recursive calls
-                    const auto new_indent = current_indent + indent_step;
-                    if (JSON_HEDLEY_UNLIKELY(indent_string.size() < new_indent))
-                    {
-                        indent_string.resize(indent_string.size() * 2, ' ');
-                    }
-
-                    // first n-1 elements
-                    auto i = val.m_data.m_value.object->cbegin();
-                    for (std::size_t cnt = 0; cnt < val.m_data.m_value.object->size() - 1; ++cnt, ++i)
-                    {
-                        o->write_characters(indent_string.c_str(), new_indent);
-                        o->write_character('\"');
-                        dump_escaped(i->first, ensure_ascii);
-                        o->write_characters("\": ", 3);
-                        dump(i->second, true, ensure_ascii, indent_step, new_indent);
-                        o->write_characters(",\n", 2);
-                    }
-
-                    // last element
-                    JSON_ASSERT(i != val.m_data.m_value.object->cend());
-                    JSON_ASSERT(std::next(i) == val.m_data.m_value.object->cend());
-                    o->write_characters(indent_string.c_str(), new_indent);
-                    o->write_character('\"');
-                    dump_escaped(i->first, ensure_ascii);
-                    o->write_characters("\": ", 3);
-                    dump(i->second, true, ensure_ascii, indent_step, new_indent);
-
-                    o->write_character('\n');
-                    o->write_characters(indent_string.c_str(), current_indent);
-                    o->write_character('}');
-                }
-                else
-                {
-                    o->write_character('{');
-
-                    // first n-1 elements
-                    auto i = val.m_data.m_value.object->cbegin();
-                    for (std::size_t cnt = 0; cnt < val.m_data.m_value.object->size() - 1; ++cnt, ++i)
-                    {
-                        o->write_character('\"');
-                        dump_escaped(i->first, ensure_ascii);
-                        o->write_characters("\":", 2);
-                        dump(i->second, false, ensure_ascii, indent_step, current_indent);
-                        o->write_character(',');
-                    }
-
-                    // last element
-                    JSON_ASSERT(i != val.m_data.m_value.object->cend());
-                    JSON_ASSERT(std::next(i) == val.m_data.m_value.object->cend());
-                    o->write_character('\"');
-                    dump_escaped(i->first, ensure_ascii);
-                    o->write_characters("\":", 2);
-                    dump(i->second, false, ensure_ascii, indent_step, current_indent);
-
-                    o->write_character('}');
-                }
-
-                return;
-            }
-
-            case value_t::array:
-            {
-                if (val.m_data.m_value.array->empty())
-                {
-                    o->write_characters("[]", 2);
-                    return;
-                }
-
-                if (pretty_print)
-                {
-                    o->write_characters("[\n", 2);
-
-                    // variable to hold indentation for recursive calls
-                    const auto new_indent = current_indent + indent_step;
-                    if (JSON_HEDLEY_UNLIKELY(indent_string.size() < new_indent))
-                    {
-                        indent_string.resize(indent_string.size() * 2, ' ');
-                    }
-
-                    // first n-1 elements
-                    for (auto i = val.m_data.m_value.array->cbegin();
-                            i != val.m_data.m_value.array->cend() - 1; ++i)
-                    {
-                        o->write_characters(indent_string.c_str(), new_indent);
-                        dump(*i, true, ensure_ascii, indent_step, new_indent);
-                        o->write_characters(",\n", 2);
-                    }
-
-                    // last element
-                    JSON_ASSERT(!val.m_data.m_value.array->empty());
-                    o->write_characters(indent_string.c_str(), new_indent);
-                    dump(val.m_data.m_value.array->back(), true, ensure_ascii, indent_step, new_indent);
-
-                    o->write_character('\n');
-                    o->write_characters(indent_string.c_str(), current_indent);
-                    o->write_character(']');
-                }
-                else
-                {
-                    o->write_character('[');
-
-                    // first n-1 elements
-                    for (auto i = val.m_data.m_value.array->cbegin();
-                            i != val.m_data.m_value.array->cend() - 1; ++i)
-                    {
-                        dump(*i, false, ensure_ascii, indent_step, current_indent);
-                        o->write_character(',');
-                    }
-
-                    // last element
-                    JSON_ASSERT(!val.m_data.m_value.array->empty());
-                    dump(val.m_data.m_value.array->back(), false, ensure_ascii, indent_step, current_indent);
-
-                    o->write_character(']');
-                }
-
-                return;
-            }
-
-            case value_t::string:
-            {
-                o->write_character('\"');
-                dump_escaped(*val.m_data.m_value.string, ensure_ascii);
-                o->write_character('\"');
-                return;
-            }
-
-            case value_t::binary:
-            {
-                if (pretty_print)
-                {
-                    o->write_characters("{\n", 2);
-
-                    // variable to hold indentation for recursive calls
-                    const auto new_indent = current_indent + indent_step;
-                    if (JSON_HEDLEY_UNLIKELY(indent_string.size() < new_indent))
-                    {
-                        indent_string.resize(indent_string.size() * 2, ' ');
-                    }
-
-                    o->write_characters(indent_string.c_str(), new_indent);
-
-                    o->write_characters("\"bytes\": [", 10);
-
-                    if (!val.m_data.m_value.binary->empty())
-                    {
-                        for (auto i = val.m_data.m_value.binary->cbegin();
-                                i != val.m_data.m_value.binary->cend() - 1; ++i)
-                        {
-                            dump_integer(*i);
-                            o->write_characters(", ", 2);
-                        }
-                        dump_integer(val.m_data.m_value.binary->back());
-                    }
-
-                    o->write_characters("],\n", 3);
-                    o->write_characters(indent_string.c_str(), new_indent);
-
-                    o->write_characters("\"subtype\": ", 11);
-                    if (val.m_data.m_value.binary->has_subtype())
-                    {
-                        dump_integer(val.m_data.m_value.binary->subtype());
-                    }
-                    else
-                    {
-                        o->write_characters("null", 4);
-                    }
-                    o->write_character('\n');
-                    o->write_characters(indent_string.c_str(), current_indent);
-                    o->write_character('}');
-                }
-                else
-                {
-                    o->write_characters("{\"bytes\":[", 10);
-
-                    if (!val.m_data.m_value.binary->empty())
-                    {
-                        for (auto i = val.m_data.m_value.binary->cbegin();
-                                i != val.m_data.m_value.binary->cend() - 1; ++i)
-                        {
-                            dump_integer(*i);
-                            o->write_character(',');
-                        }
-                        dump_integer(val.m_data.m_value.binary->back());
-                    }
-
-                    o->write_characters("],\"subtype\":", 12);
-                    if (val.m_data.m_value.binary->has_subtype())
-                    {
-                        dump_integer(val.m_data.m_value.binary->subtype());
-                        o->write_character('}');
-                    }
-                    else
-                    {
-                        o->write_characters("null}", 5);
-                    }
-                }
-                return;
-            }
-
-            case value_t::boolean:
-            {
-                if (val.m_data.m_value.boolean)
-                {
-                    o->write_characters("true", 4);
-                }
-                else
-                {
-                    o->write_characters("false", 5);
-                }
-                return;
-            }
-
-            case value_t::number_integer:
-            {
-                dump_integer(val.m_data.m_value.number_integer);
-                return;
-            }
-
-            case value_t::number_unsigned:
-            {
-                dump_integer(val.m_data.m_value.number_unsigned);
-                return;
-            }
-
-            case value_t::number_float:
-            {
-                dump_float(val.m_data.m_value.number_float);
-                return;
-            }
-
-            case value_t::discarded:
-            {
-                o->write_characters("<discarded>", 11);
-                return;
-            }
-
-            case value_t::null:
-            {
-                o->write_characters("null", 4);
-                return;
-            }
-
-            default:            // LCOV_EXCL_LINE
-                JSON_ASSERT(false); // NOLINT(cert-dcl03-c,hicpp-static-assert,misc-static-assert) LCOV_EXCL_LINE
-        }
-    }
-
-  JSON_PRIVATE_UNLESS_TESTED:
-    /*!
-    @brief dump escaped string
-
-    Escape a string by replacing certain special characters by a sequence of an
-    escape character (backslash) and another character and other control
-    characters by a sequence of "\u" followed by a four-digit hex
-    representation. The escaped string is written to output stream @a o.
-
-    @param[in] s  the string to escape
-    @param[in] ensure_ascii  whether to escape non-ASCII characters with
-                             \uXXXX sequences
-
-    @complexity Linear in the length of string @a s.
-    */
-    void dump_escaped(const string_t& s, const bool ensure_ascii)
-    {
-        std::uint32_t codepoint{};
-        std::uint8_t state = UTF8_ACCEPT;
-        std::size_t bytes = 0;  // number of bytes written to string_buffer
-
-        // number of bytes written at the point of the last valid byte
-        std::size_t bytes_after_last_accept = 0;
-        std::size_t undumped_chars = 0;
-
-        for (std::size_t i = 0; i < s.size(); ++i)
-        {
-            const auto byte = static_cast<std::uint8_t>(s[i]);
-
-            switch (decode(state, codepoint, byte))
-            {
-                case UTF8_ACCEPT:  // decode found a new code point
-                {
-                    switch (codepoint)
-                    {
-                        case 0x08: // backspace
-                        {
-                            string_buffer[bytes++] = '\\';
-                            string_buffer[bytes++] = 'b';
-                            break;
-                        }
-
-                        case 0x09: // horizontal tab
-                        {
-                            string_buffer[bytes++] = '\\';
-                            string_buffer[bytes++] = 't';
-                            break;
-                        }
-
-                        case 0x0A: // newline
-                        {
-                            string_buffer[bytes++] = '\\';
-                            string_buffer[bytes++] = 'n';
-                            break;
-                        }
-
-                        case 0x0C: // formfeed
-                        {
-                            string_buffer[bytes++] = '\\';
-                            string_buffer[bytes++] = 'f';
-                            break;
-                        }
-
-                        case 0x0D: // carriage return
-                        {
-                            string_buffer[bytes++] = '\\';
-                            string_buffer[bytes++] = 'r';
-                            break;
-                        }
-
-                        case 0x22: // quotation mark
-                        {
-                            string_buffer[bytes++] = '\\';
-                            string_buffer[bytes++] = '\"';
-                            break;
-                        }
-
-                        case 0x5C: // reverse solidus
-                        {
-                            string_buffer[bytes++] = '\\';
-                            string_buffer[bytes++] = '\\';
-                            break;
-                        }
-
-                        default:
-                        {
-                            // escape control characters (0x00..0x1F) or, if
-                            // ensure_ascii parameter is used, non-ASCII characters
-                            if ((codepoint <= 0x1F) || (ensure_ascii && (codepoint >= 0x7F)))
-                            {
-                                if (codepoint <= 0xFFFF)
-                                {
-                                    // NOLINTNEXTLINE(cppcoreguidelines-pro-type-vararg,hicpp-vararg)
-                                    static_cast<void>((std::snprintf)(string_buffer.data() + bytes, 7, "\\u%04x",
-                                                                      static_cast<std::uint16_t>(codepoint)));
-                                    bytes += 6;
-                                }
-                                else
-                                {
-                                    // NOLINTNEXTLINE(cppcoreguidelines-pro-type-vararg,hicpp-vararg)
-                                    static_cast<void>((std::snprintf)(string_buffer.data() + bytes, 13, "\\u%04x\\u%04x",
-                                                                      static_cast<std::uint16_t>(0xD7C0u + (codepoint >> 10u)),
-                                                                      static_cast<std::uint16_t>(0xDC00u + (codepoint & 0x3FFu))));
-                                    bytes += 12;
-                                }
-                            }
-                            else
-                            {
-                                // copy byte to buffer (all previous bytes
-                                // been copied have in default case above)
-                                string_buffer[bytes++] = s[i];
-                            }
-                            break;
-                        }
-                    }
-
-                    // write buffer and reset index; there must be 13 bytes
-                    // left, as this is the maximal number of bytes to be
-                    // written ("\uxxxx\uxxxx\0") for one code point
-                    if (string_buffer.size() - bytes < 13)
-                    {
-                        o->write_characters(string_buffer.data(), bytes);
-                        bytes = 0;
-                    }
-
-                    // remember the byte position of this accept
-                    bytes_after_last_accept = bytes;
-                    undumped_chars = 0;
-                    break;
-                }
-
-                case UTF8_REJECT:  // decode found invalid UTF-8 byte
-                {
-                    switch (error_handler)
-                    {
-                        case error_handler_t::strict:
-                        {
-                            JSON_THROW(type_error::create(316, concat("invalid UTF-8 byte at index ", std::to_string(i), ": 0x", hex_bytes(byte | 0)), nullptr));
-                        }
-
-                        case error_handler_t::ignore:
-                        case error_handler_t::replace:
-                        {
-                            // in case we saw this character the first time, we
-                            // would like to read it again, because the byte
-                            // may be OK for itself, but just not OK for the
-                            // previous sequence
-                            if (undumped_chars > 0)
-                            {
-                                --i;
-                            }
-
-                            // reset length buffer to the last accepted index;
-                            // thus removing/ignoring the invalid characters
-                            bytes = bytes_after_last_accept;
-
-                            if (error_handler == error_handler_t::replace)
-                            {
-                                // add a replacement character
-                                if (ensure_ascii)
-                                {
-                                    string_buffer[bytes++] = '\\';
-                                    string_buffer[bytes++] = 'u';
-                                    string_buffer[bytes++] = 'f';
-                                    string_buffer[bytes++] = 'f';
-                                    string_buffer[bytes++] = 'f';
-                                    string_buffer[bytes++] = 'd';
-                                }
-                                else
-                                {
-                                    string_buffer[bytes++] = detail::binary_writer<BasicJsonType, char>::to_char_type('\xEF');
-                                    string_buffer[bytes++] = detail::binary_writer<BasicJsonType, char>::to_char_type('\xBF');
-                                    string_buffer[bytes++] = detail::binary_writer<BasicJsonType, char>::to_char_type('\xBD');
-                                }
-
-                                // write buffer and reset index; there must be 13 bytes
-                                // left, as this is the maximal number of bytes to be
-                                // written ("\uxxxx\uxxxx\0") for one code point
-                                if (string_buffer.size() - bytes < 13)
-                                {
-                                    o->write_characters(string_buffer.data(), bytes);
-                                    bytes = 0;
-                                }
-
-                                bytes_after_last_accept = bytes;
-                            }
-
-                            undumped_chars = 0;
-
-                            // continue processing the string
-                            state = UTF8_ACCEPT;
-                            break;
-                        }
-
-                        default:            // LCOV_EXCL_LINE
-                            JSON_ASSERT(false); // NOLINT(cert-dcl03-c,hicpp-static-assert,misc-static-assert) LCOV_EXCL_LINE
-                    }
-                    break;
-                }
-
-                default:  // decode found yet incomplete multi-byte code point
-                {
-                    if (!ensure_ascii)
-                    {
-                        // code point will not be escaped - copy byte to buffer
-                        string_buffer[bytes++] = s[i];
-                    }
-                    ++undumped_chars;
-                    break;
-                }
-            }
-        }
-
-        // we finished processing the string
-        if (JSON_HEDLEY_LIKELY(state == UTF8_ACCEPT))
-        {
-            // write buffer
-            if (bytes > 0)
-            {
-                o->write_characters(string_buffer.data(), bytes);
-            }
-        }
-        else
-        {
-            // we finish reading, but do not accept: string was incomplete
-            switch (error_handler)
-            {
-                case error_handler_t::strict:
-                {
-                    JSON_THROW(type_error::create(316, concat("incomplete UTF-8 string; last byte: 0x", hex_bytes(static_cast<std::uint8_t>(s.back() | 0))), nullptr));
-                }
-
-                case error_handler_t::ignore:
-                {
-                    // write all accepted bytes
-                    o->write_characters(string_buffer.data(), bytes_after_last_accept);
-                    break;
-                }
-
-                case error_handler_t::replace:
-                {
-                    // write all accepted bytes
-                    o->write_characters(string_buffer.data(), bytes_after_last_accept);
-                    // add a replacement character
-                    if (ensure_ascii)
-                    {
-                        o->write_characters("\\ufffd", 6);
-                    }
-                    else
-                    {
-                        o->write_characters("\xEF\xBF\xBD", 3);
-                    }
-                    break;
-                }
-
-                default:            // LCOV_EXCL_LINE
-                    JSON_ASSERT(false); // NOLINT(cert-dcl03-c,hicpp-static-assert,misc-static-assert) LCOV_EXCL_LINE
-            }
-        }
-    }
-
-  private:
-    /*!
-    @brief count digits
-
-    Count the number of decimal (base 10) digits for an input unsigned integer.
-
-    @param[in] x  unsigned integer number to count its digits
-    @return    number of decimal digits
-    */
-    inline unsigned int count_digits(number_unsigned_t x) noexcept
-    {
-        unsigned int n_digits = 1;
-        for (;;)
-        {
-            if (x < 10)
-            {
-                return n_digits;
-            }
-            if (x < 100)
-            {
-                return n_digits + 1;
-            }
-            if (x < 1000)
-            {
-                return n_digits + 2;
-            }
-            if (x < 10000)
-            {
-                return n_digits + 3;
-            }
-            x = x / 10000u;
-            n_digits += 4;
-        }
-    }
-
-    /*!
-     * @brief convert a byte to a uppercase hex representation
-     * @param[in] byte byte to represent
-     * @return representation ("00".."FF")
-     */
-    static std::string hex_bytes(std::uint8_t byte)
-    {
-        std::string result = "FF";
-        constexpr const char* nibble_to_hex = "0123456789ABCDEF";
-        result[0] = nibble_to_hex[byte / 16];
-        result[1] = nibble_to_hex[byte % 16];
-        return result;
-    }
-
-    // templates to avoid warnings about useless casts
-    template <typename NumberType, enable_if_t<std::is_signed<NumberType>::value, int> = 0>
-    bool is_negative_number(NumberType x)
-    {
-        return x < 0;
-    }
-
-    template < typename NumberType, enable_if_t <std::is_unsigned<NumberType>::value, int > = 0 >
-    bool is_negative_number(NumberType /*unused*/)
-    {
-        return false;
-    }
-
-    /*!
-    @brief dump an integer
-
-    Dump a given integer to output stream @a o. Works internally with
-    @a number_buffer.
-
-    @param[in] x  integer number (signed or unsigned) to dump
-    @tparam NumberType either @a number_integer_t or @a number_unsigned_t
-    */
-    template < typename NumberType, detail::enable_if_t <
-                   std::is_integral<NumberType>::value ||
-                   std::is_same<NumberType, number_unsigned_t>::value ||
-                   std::is_same<NumberType, number_integer_t>::value ||
-                   std::is_same<NumberType, binary_char_t>::value,
-                   int > = 0 >
-    void dump_integer(NumberType x)
-    {
-        static constexpr std::array<std::array<char, 2>, 100> digits_to_99
-        {
-            {
-                {{'0', '0'}}, {{'0', '1'}}, {{'0', '2'}}, {{'0', '3'}}, {{'0', '4'}}, {{'0', '5'}}, {{'0', '6'}}, {{'0', '7'}}, {{'0', '8'}}, {{'0', '9'}},
-                {{'1', '0'}}, {{'1', '1'}}, {{'1', '2'}}, {{'1', '3'}}, {{'1', '4'}}, {{'1', '5'}}, {{'1', '6'}}, {{'1', '7'}}, {{'1', '8'}}, {{'1', '9'}},
-                {{'2', '0'}}, {{'2', '1'}}, {{'2', '2'}}, {{'2', '3'}}, {{'2', '4'}}, {{'2', '5'}}, {{'2', '6'}}, {{'2', '7'}}, {{'2', '8'}}, {{'2', '9'}},
-                {{'3', '0'}}, {{'3', '1'}}, {{'3', '2'}}, {{'3', '3'}}, {{'3', '4'}}, {{'3', '5'}}, {{'3', '6'}}, {{'3', '7'}}, {{'3', '8'}}, {{'3', '9'}},
-                {{'4', '0'}}, {{'4', '1'}}, {{'4', '2'}}, {{'4', '3'}}, {{'4', '4'}}, {{'4', '5'}}, {{'4', '6'}}, {{'4', '7'}}, {{'4', '8'}}, {{'4', '9'}},
-                {{'5', '0'}}, {{'5', '1'}}, {{'5', '2'}}, {{'5', '3'}}, {{'5', '4'}}, {{'5', '5'}}, {{'5', '6'}}, {{'5', '7'}}, {{'5', '8'}}, {{'5', '9'}},
-                {{'6', '0'}}, {{'6', '1'}}, {{'6', '2'}}, {{'6', '3'}}, {{'6', '4'}}, {{'6', '5'}}, {{'6', '6'}}, {{'6', '7'}}, {{'6', '8'}}, {{'6', '9'}},
-                {{'7', '0'}}, {{'7', '1'}}, {{'7', '2'}}, {{'7', '3'}}, {{'7', '4'}}, {{'7', '5'}}, {{'7', '6'}}, {{'7', '7'}}, {{'7', '8'}}, {{'7', '9'}},
-                {{'8', '0'}}, {{'8', '1'}}, {{'8', '2'}}, {{'8', '3'}}, {{'8', '4'}}, {{'8', '5'}}, {{'8', '6'}}, {{'8', '7'}}, {{'8', '8'}}, {{'8', '9'}},
-                {{'9', '0'}}, {{'9', '1'}}, {{'9', '2'}}, {{'9', '3'}}, {{'9', '4'}}, {{'9', '5'}}, {{'9', '6'}}, {{'9', '7'}}, {{'9', '8'}}, {{'9', '9'}},
-            }
-        };
-
-        // special case for "0"
-        if (x == 0)
-        {
-            o->write_character('0');
-            return;
-        }
-
-        // use a pointer to fill the buffer
-        auto buffer_ptr = number_buffer.begin(); // NOLINT(llvm-qualified-auto,readability-qualified-auto,cppcoreguidelines-pro-type-vararg,hicpp-vararg)
-
-        number_unsigned_t abs_value;
-
-        unsigned int n_chars{};
-
-        if (is_negative_number(x))
-        {
-            *buffer_ptr = '-';
-            abs_value = remove_sign(static_cast<number_integer_t>(x));
-
-            // account one more byte for the minus sign
-            n_chars = 1 + count_digits(abs_value);
-        }
-        else
-        {
-            abs_value = static_cast<number_unsigned_t>(x);
-            n_chars = count_digits(abs_value);
-        }
-
-        // spare 1 byte for '\0'
-        JSON_ASSERT(n_chars < number_buffer.size() - 1);
-
-        // jump to the end to generate the string from backward,
-        // so we later avoid reversing the result
-        buffer_ptr += n_chars;
-
-        // Fast int2ascii implementation inspired by "Fastware" talk by Andrei Alexandrescu
-        // See: https://www.youtube.com/watch?v=o4-CwDo2zpg
-        while (abs_value >= 100)
-        {
-            const auto digits_index = static_cast<unsigned>((abs_value % 100));
-            abs_value /= 100;
-            *(--buffer_ptr) = digits_to_99[digits_index][1];
-            *(--buffer_ptr) = digits_to_99[digits_index][0];
-        }
-
-        if (abs_value >= 10)
-        {
-            const auto digits_index = static_cast<unsigned>(abs_value);
-            *(--buffer_ptr) = digits_to_99[digits_index][1];
-            *(--buffer_ptr) = digits_to_99[digits_index][0];
-        }
-        else
-        {
-            *(--buffer_ptr) = static_cast<char>('0' + abs_value);
-        }
-
-        o->write_characters(number_buffer.data(), n_chars);
-    }
-
-    /*!
-    @brief dump a floating-point number
-
-    Dump a given floating-point number to output stream @a o. Works internally
-    with @a number_buffer.
-
-    @param[in] x  floating-point number to dump
-    */
-    void dump_float(number_float_t x)
-    {
-        // NaN / inf
-        if (!std::isfinite(x))
-        {
-            o->write_characters("null", 4);
-            return;
-        }
-
-        // If number_float_t is an IEEE-754 single or double precision number,
-        // use the Grisu2 algorithm to produce short numbers which are
-        // guaranteed to round-trip, using strtof and strtod, resp.
-        //
-        // NB: The test below works if <long double> == <double>.
-        static constexpr bool is_ieee_single_or_double
-            = (std::numeric_limits<number_float_t>::is_iec559 && std::numeric_limits<number_float_t>::digits == 24 && std::numeric_limits<number_float_t>::max_exponent == 128) ||
-              (std::numeric_limits<number_float_t>::is_iec559 && std::numeric_limits<number_float_t>::digits == 53 && std::numeric_limits<number_float_t>::max_exponent == 1024);
-
-        dump_float(x, std::integral_constant<bool, is_ieee_single_or_double>());
-    }
-
-    void dump_float(number_float_t x, std::true_type /*is_ieee_single_or_double*/)
-    {
-        auto* begin = number_buffer.data();
-        auto* end = ::nlohmann::detail::to_chars(begin, begin + number_buffer.size(), x);
-
-        o->write_characters(begin, static_cast<size_t>(end - begin));
-    }
-
-    void dump_float(number_float_t x, std::false_type /*is_ieee_single_or_double*/)
-    {
-        // get number of digits for a float -> text -> float round-trip
-        static constexpr auto d = std::numeric_limits<number_float_t>::max_digits10;
-
-        // the actual conversion
-        // NOLINTNEXTLINE(cppcoreguidelines-pro-type-vararg,hicpp-vararg)
-        std::ptrdiff_t len = (std::snprintf)(number_buffer.data(), number_buffer.size(), "%.*g", d, x);
-
-        // negative value indicates an error
-        JSON_ASSERT(len > 0);
-        // check if buffer was large enough
-        JSON_ASSERT(static_cast<std::size_t>(len) < number_buffer.size());
-
-        // erase thousands separator
-        if (thousands_sep != '\0')
-        {
-            // NOLINTNEXTLINE(readability-qualified-auto,llvm-qualified-auto): std::remove returns an iterator, see https://github.com/nlohmann/json/issues/3081
-            const auto end = std::remove(number_buffer.begin(), number_buffer.begin() + len, thousands_sep);
-            std::fill(end, number_buffer.end(), '\0');
-            JSON_ASSERT((end - number_buffer.begin()) <= len);
-            len = (end - number_buffer.begin());
-        }
-
-        // convert decimal point to '.'
-        if (decimal_point != '\0' && decimal_point != '.')
-        {
-            // NOLINTNEXTLINE(readability-qualified-auto,llvm-qualified-auto): std::find returns an iterator, see https://github.com/nlohmann/json/issues/3081
-            const auto dec_pos = std::find(number_buffer.begin(), number_buffer.end(), decimal_point);
-            if (dec_pos != number_buffer.end())
-            {
-                *dec_pos = '.';
-            }
-        }
-
-        o->write_characters(number_buffer.data(), static_cast<std::size_t>(len));
-
-        // determine if we need to append ".0"
-        const bool value_is_int_like =
-            std::none_of(number_buffer.begin(), number_buffer.begin() + len + 1,
-                         [](char c)
-        {
-            return c == '.' || c == 'e';
-        });
-
-        if (value_is_int_like)
-        {
-            o->write_characters(".0", 2);
-        }
-    }
-
-    /*!
-    @brief check whether a string is UTF-8 encoded
-
-    The function checks each byte of a string whether it is UTF-8 encoded. The
-    result of the check is stored in the @a state parameter. The function must
-    be called initially with state 0 (accept). State 1 means the string must
-    be rejected, because the current byte is not allowed. If the string is
-    completely processed, but the state is non-zero, the string ended
-    prematurely; that is, the last byte indicated more bytes should have
-    followed.
-
-    @param[in,out] state  the state of the decoding
-    @param[in,out] codep  codepoint (valid only if resulting state is UTF8_ACCEPT)
-    @param[in] byte       next byte to decode
-    @return               new state
-
-    @note The function has been edited: a std::array is used.
-
-    @copyright Copyright (c) 2008-2009 Bjoern Hoehrmann <bjoern@hoehrmann.de>
-    @sa http://bjoern.hoehrmann.de/utf-8/decoder/dfa/
-    */
-    static std::uint8_t decode(std::uint8_t& state, std::uint32_t& codep, const std::uint8_t byte) noexcept
-    {
-        static const std::array<std::uint8_t, 400> utf8d =
-        {
-            {
-                0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 00..1F
-                0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 20..3F
-                0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 40..5F
-                0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 60..7F
-                1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, // 80..9F
-                7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, // A0..BF
-                8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, // C0..DF
-                0xA, 0x3, 0x3, 0x3, 0x3, 0x3, 0x3, 0x3, 0x3, 0x3, 0x3, 0x3, 0x3, 0x4, 0x3, 0x3, // E0..EF
-                0xB, 0x6, 0x6, 0x6, 0x5, 0x8, 0x8, 0x8, 0x8, 0x8, 0x8, 0x8, 0x8, 0x8, 0x8, 0x8, // F0..FF
-                0x0, 0x1, 0x2, 0x3, 0x5, 0x8, 0x7, 0x1, 0x1, 0x1, 0x4, 0x6, 0x1, 0x1, 0x1, 0x1, // s0..s0
-                1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 0, 1, 0, 1, 1, 1, 1, 1, 1, // s1..s2
-                1, 2, 1, 1, 1, 1, 1, 2, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, // s3..s4
-                1, 2, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 3, 1, 3, 1, 1, 1, 1, 1, 1, // s5..s6
-                1, 3, 1, 1, 1, 1, 1, 3, 1, 3, 1, 1, 1, 1, 1, 1, 1, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 // s7..s8
-            }
-        };
-
-        JSON_ASSERT(byte < utf8d.size());
-        const std::uint8_t type = utf8d[byte];
-
-        codep = (state != UTF8_ACCEPT)
-                ? (byte & 0x3fu) | (codep << 6u)
-                : (0xFFu >> type) & (byte);
-
-        const std::size_t index = 256u + static_cast<size_t>(state) * 16u + static_cast<size_t>(type);
-        JSON_ASSERT(index < utf8d.size());
-        state = utf8d[index];
-        return state;
-    }
-
-    /*
-     * Overload to make the compiler happy while it is instantiating
-     * dump_integer for number_unsigned_t.
-     * Must never be called.
-     */
-    number_unsigned_t remove_sign(number_unsigned_t x)
-    {
-        JSON_ASSERT(false); // NOLINT(cert-dcl03-c,hicpp-static-assert,misc-static-assert) LCOV_EXCL_LINE
-        return x; // LCOV_EXCL_LINE
-    }
-
-    /*
-     * Helper function for dump_integer
-     *
-     * This function takes a negative signed integer and returns its absolute
-     * value as unsigned integer. The plus/minus shuffling is necessary as we can
-     * not directly remove the sign of an arbitrary signed integer as the
-     * absolute values of INT_MIN and INT_MAX are usually not the same. See
-     * #1708 for details.
-     */
-    inline number_unsigned_t remove_sign(number_integer_t x) noexcept
-    {
-        JSON_ASSERT(x < 0 && x < (std::numeric_limits<number_integer_t>::max)()); // NOLINT(misc-redundant-expression)
-        return static_cast<number_unsigned_t>(-(x + 1)) + 1;
-    }
-
-  private:
-    /// the output of the serializer
-    output_adapter_t<char> o = nullptr;
-
-    /// a (hopefully) large enough character buffer
-    std::array<char, 64> number_buffer{{}};
-
-    /// the locale
-    const std::lconv* loc = nullptr;
-    /// the locale's thousand separator character
-    const char thousands_sep = '\0';
-    /// the locale's decimal point character
-    const char decimal_point = '\0';
-
-    /// string buffer
-    std::array<char, 512> string_buffer{{}};
-
-    /// the indentation character
-    const char indent_char;
-    /// the indentation string
-    string_t indent_string;
-
-    /// error_handler how to react on decoding errors
-    const error_handler_t error_handler;
-};
-
-}  // namespace detail
-NLOHMANN_JSON_NAMESPACE_END
-
-// #include <nlohmann/detail/value_t.hpp>
-
-// #include <nlohmann/json_fwd.hpp>
-
-// #include <nlohmann/ordered_map.hpp>
-//     __ _____ _____ _____
-//  __|  |   __|     |   | |  JSON for Modern C++
-// |  |  |__   |  |  | | | |  version 3.11.2
-// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
-//
-// SPDX-FileCopyrightText: 2013-2022 Niels Lohmann <https://nlohmann.me>
-// SPDX-License-Identifier: MIT
-
-
-
-#include <functional> // equal_to, less
-#include <initializer_list> // initializer_list
-#include <iterator> // input_iterator_tag, iterator_traits
-#include <memory> // allocator
-#include <stdexcept> // for out_of_range
-#include <type_traits> // enable_if, is_convertible
-#include <utility> // pair
-#include <vector> // vector
-
-// #include <nlohmann/detail/macro_scope.hpp>
-
-// #include <nlohmann/detail/meta/type_traits.hpp>
-
-
-NLOHMANN_JSON_NAMESPACE_BEGIN
-
-/// ordered_map: a minimal map-like container that preserves insertion order
-/// for use within nlohmann::basic_json<ordered_map>
-template <class Key, class T, class IgnoredLess = std::less<Key>,
-          class Allocator = std::allocator<std::pair<const Key, T>>>
-                  struct ordered_map : std::vector<std::pair<const Key, T>, Allocator>
-{
-    using key_type = Key;
-    using mapped_type = T;
-    using Container = std::vector<std::pair<const Key, T>, Allocator>;
-    using iterator = typename Container::iterator;
-    using const_iterator = typename Container::const_iterator;
-    using size_type = typename Container::size_type;
-    using value_type = typename Container::value_type;
-#ifdef JSON_HAS_CPP_14
-    using key_compare = std::equal_to<>;
-#else
-    using key_compare = std::equal_to<Key>;
-#endif
-
-    // Explicit constructors instead of `using Container::Container`
-    // otherwise older compilers choke on it (GCC <= 5.5, xcode <= 9.4)
-    ordered_map() noexcept(noexcept(Container())) : Container{} {}
-    explicit ordered_map(const Allocator& alloc) noexcept(noexcept(Container(alloc))) : Container{alloc} {}
-    template <class It>
-    ordered_map(It first, It last, const Allocator& alloc = Allocator())
-        : Container{first, last, alloc} {}
-    ordered_map(std::initializer_list<value_type> init, const Allocator& alloc = Allocator() )
-        : Container{init, alloc} {}
-
-    std::pair<iterator, bool> emplace(const key_type& key, T&& t)
-    {
-        for (auto it = this->begin(); it != this->end(); ++it)
-        {
-            if (m_compare(it->first, key))
-            {
-                return {it, false};
-            }
-        }
-        Container::emplace_back(key, std::forward<T>(t));
-        return {std::prev(this->end()), true};
-    }
-
-    template<class KeyType, detail::enable_if_t<
-                 detail::is_usable_as_key_type<key_compare, key_type, KeyType>::value, int> = 0>
-    std::pair<iterator, bool> emplace(KeyType && key, T && t)
-    {
-        for (auto it = this->begin(); it != this->end(); ++it)
-        {
-            if (m_compare(it->first, key))
-            {
-                return {it, false};
-            }
-        }
-        Container::emplace_back(std::forward<KeyType>(key), std::forward<T>(t));
-        return {std::prev(this->end()), true};
-    }
-
-    T& operator[](const key_type& key)
-    {
-        return emplace(key, T{}).first->second;
-    }
-
-    template<class KeyType, detail::enable_if_t<
-                 detail::is_usable_as_key_type<key_compare, key_type, KeyType>::value, int> = 0>
-    T & operator[](KeyType && key)
-    {
-        return emplace(std::forward<KeyType>(key), T{}).first->second;
-    }
-
-    const T& operator[](const key_type& key) const
-    {
-        return at(key);
-    }
-
-    template<class KeyType, detail::enable_if_t<
-                 detail::is_usable_as_key_type<key_compare, key_type, KeyType>::value, int> = 0>
-    const T & operator[](KeyType && key) const
-    {
-        return at(std::forward<KeyType>(key));
-    }
-
-    T& at(const key_type& key)
-    {
-        for (auto it = this->begin(); it != this->end(); ++it)
-        {
-            if (m_compare(it->first, key))
-            {
-                return it->second;
-            }
-        }
-
-        JSON_THROW(std::out_of_range("key not found"));
-    }
-
-    template<class KeyType, detail::enable_if_t<
-                 detail::is_usable_as_key_type<key_compare, key_type, KeyType>::value, int> = 0>
-    T & at(KeyType && key)
-    {
-        for (auto it = this->begin(); it != this->end(); ++it)
-        {
-            if (m_compare(it->first, key))
-            {
-                return it->second;
-            }
-        }
-
-        JSON_THROW(std::out_of_range("key not found"));
-    }
-
-    const T& at(const key_type& key) const
-    {
-        for (auto it = this->begin(); it != this->end(); ++it)
-        {
-            if (m_compare(it->first, key))
-            {
-                return it->second;
-            }
-        }
-
-        JSON_THROW(std::out_of_range("key not found"));
-    }
-
-    template<class KeyType, detail::enable_if_t<
-                 detail::is_usable_as_key_type<key_compare, key_type, KeyType>::value, int> = 0>
-    const T & at(KeyType && key) const
-    {
-        for (auto it = this->begin(); it != this->end(); ++it)
-        {
-            if (m_compare(it->first, key))
-            {
-                return it->second;
-            }
-        }
-
-        JSON_THROW(std::out_of_range("key not found"));
-    }
-
-    size_type erase(const key_type& key)
-    {
-        for (auto it = this->begin(); it != this->end(); ++it)
-        {
-            if (m_compare(it->first, key))
-            {
-                // Since we cannot move const Keys, re-construct them in place
-                for (auto next = it; ++next != this->end(); ++it)
-                {
-                    it->~value_type(); // Destroy but keep allocation
-                    new (&*it) value_type{std::move(*next)};
-                }
-                Container::pop_back();
-                return 1;
-            }
-        }
-        return 0;
-    }
-
-    template<class KeyType, detail::enable_if_t<
-                 detail::is_usable_as_key_type<key_compare, key_type, KeyType>::value, int> = 0>
-    size_type erase(KeyType && key)
-    {
-        for (auto it = this->begin(); it != this->end(); ++it)
-        {
-            if (m_compare(it->first, key))
-            {
-                // Since we cannot move const Keys, re-construct them in place
-                for (auto next = it; ++next != this->end(); ++it)
-                {
-                    it->~value_type(); // Destroy but keep allocation
-                    new (&*it) value_type{std::move(*next)};
-                }
-                Container::pop_back();
-                return 1;
-            }
-        }
-        return 0;
-    }
-
-    iterator erase(iterator pos)
-    {
-        return erase(pos, std::next(pos));
-    }
-
-    iterator erase(iterator first, iterator last)
-    {
-        if (first == last)
-        {
-            return first;
-        }
-
-        const auto elements_affected = std::distance(first, last);
-        const auto offset = std::distance(Container::begin(), first);
-
-        // This is the start situation. We need to delete elements_affected
-        // elements (3 in this example: e, f, g), and need to return an
-        // iterator past the last deleted element (h in this example).
-        // Note that offset is the distance from the start of the vector
-        // to first. We will need this later.
-
-        // [ a, b, c, d, e, f, g, h, i, j ]
-        //               ^        ^
-        //             first    last
-
-        // Since we cannot move const Keys, we re-construct them in place.
-        // We start at first and re-construct (viz. copy) the elements from
-        // the back of the vector. Example for first iteration:
-
-        //               ,--------.
-        //               v        |   destroy e and re-construct with h
-        // [ a, b, c, d, e, f, g, h, i, j ]
-        //               ^        ^
-        //               it       it + elements_affected
-
-        for (auto it = first; std::next(it, elements_affected) != Container::end(); ++it)
-        {
-            it->~value_type(); // destroy but keep allocation
-            new (&*it) value_type{std::move(*std::next(it, elements_affected))}; // "move" next element to it
-        }
-
-        // [ a, b, c, d, h, i, j, h, i, j ]
-        //               ^        ^
-        //             first    last
-
-        // remove the unneeded elements at the end of the vector
-        Container::resize(this->size() - static_cast<size_type>(elements_affected));
-
-        // [ a, b, c, d, h, i, j ]
-        //               ^        ^
-        //             first    last
-
-        // first is now pointing past the last deleted element, but we cannot
-        // use this iterator, because it may have been invalidated by the
-        // resize call. Instead, we can return begin() + offset.
-        return Container::begin() + offset;
-    }
-
-    size_type count(const key_type& key) const
-    {
-        for (auto it = this->begin(); it != this->end(); ++it)
-        {
-            if (m_compare(it->first, key))
-            {
-                return 1;
-            }
-        }
-        return 0;
-    }
-
-    template<class KeyType, detail::enable_if_t<
-                 detail::is_usable_as_key_type<key_compare, key_type, KeyType>::value, int> = 0>
-    size_type count(KeyType && key) const
-    {
-        for (auto it = this->begin(); it != this->end(); ++it)
-        {
-            if (m_compare(it->first, key))
-            {
-                return 1;
-            }
-        }
-        return 0;
-    }
-
-    iterator find(const key_type& key)
-    {
-        for (auto it = this->begin(); it != this->end(); ++it)
-        {
-            if (m_compare(it->first, key))
-            {
-                return it;
-            }
-        }
-        return Container::end();
-    }
-
-    template<class KeyType, detail::enable_if_t<
-                 detail::is_usable_as_key_type<key_compare, key_type, KeyType>::value, int> = 0>
-    iterator find(KeyType && key)
-    {
-        for (auto it = this->begin(); it != this->end(); ++it)
-        {
-            if (m_compare(it->first, key))
-            {
-                return it;
-            }
-        }
-        return Container::end();
-    }
-
-    const_iterator find(const key_type& key) const
-    {
-        for (auto it = this->begin(); it != this->end(); ++it)
-        {
-            if (m_compare(it->first, key))
-            {
-                return it;
-            }
-        }
-        return Container::end();
-    }
-
-    std::pair<iterator, bool> insert( value_type&& value )
-    {
-        return emplace(value.first, std::move(value.second));
-    }
-
-    std::pair<iterator, bool> insert( const value_type& value )
-    {
-        for (auto it = this->begin(); it != this->end(); ++it)
-        {
-            if (m_compare(it->first, value.first))
-            {
-                return {it, false};
-            }
-        }
-        Container::push_back(value);
-        return {--this->end(), true};
-    }
-
-    template<typename InputIt>
-    using require_input_iter = typename std::enable_if<std::is_convertible<typename std::iterator_traits<InputIt>::iterator_category,
-            std::input_iterator_tag>::value>::type;
-
-    template<typename InputIt, typename = require_input_iter<InputIt>>
-    void insert(InputIt first, InputIt last)
-    {
-        for (auto it = first; it != last; ++it)
-        {
-            insert(*it);
-        }
-    }
-
-private:
-    JSON_NO_UNIQUE_ADDRESS key_compare m_compare = key_compare();
-};
-
-NLOHMANN_JSON_NAMESPACE_END
-
-
-#if defined(JSON_HAS_CPP_17)
-    #include <any>
-    #include <string_view>
-#endif
-
-/*!
-@brief namespace for Niels Lohmann
-@see https://github.com/nlohmann
-@since version 1.0.0
-*/
-NLOHMANN_JSON_NAMESPACE_BEGIN
-
-/*!
-@brief a class to store JSON values
-
-@internal
-@invariant The member variables @a m_value and @a m_type have the following
-relationship:
-- If `m_type == value_t::object`, then `m_value.object != nullptr`.
-- If `m_type == value_t::array`, then `m_value.array != nullptr`.
-- If `m_type == value_t::string`, then `m_value.string != nullptr`.
-The invariants are checked by member function assert_invariant().
-
-@note ObjectType trick from https://stackoverflow.com/a/9860911
-@endinternal
-
-@since version 1.0.0
-
-@nosubgrouping
-*/
-NLOHMANN_BASIC_JSON_TPL_DECLARATION
-class basic_json // NOLINT(cppcoreguidelines-special-member-functions,hicpp-special-member-functions)
-    : public ::nlohmann::detail::json_base_class<CustomBaseClass>
-{
-  private:
-    template<detail::value_t> friend struct detail::external_constructor;
-
-    template<typename>
-    friend class ::nlohmann::json_pointer;
-    // can be restored when json_pointer backwards compatibility is removed
-    // friend ::nlohmann::json_pointer<StringType>;
-
-    template<typename BasicJsonType, typename InputType>
-    friend class ::nlohmann::detail::parser;
-    friend ::nlohmann::detail::serializer<basic_json>;
-    template<typename BasicJsonType>
-    friend class ::nlohmann::detail::iter_impl;
-    template<typename BasicJsonType, typename CharType>
-    friend class ::nlohmann::detail::binary_writer;
-    template<typename BasicJsonType, typename InputType, typename SAX>
-    friend class ::nlohmann::detail::binary_reader;
-    template<typename BasicJsonType>
-    friend class ::nlohmann::detail::json_sax_dom_parser;
-    template<typename BasicJsonType>
-    friend class ::nlohmann::detail::json_sax_dom_callback_parser;
-    friend class ::nlohmann::detail::exception;
-
-    /// workaround type for MSVC
-    using basic_json_t = NLOHMANN_BASIC_JSON_TPL;
-    using json_base_class_t = ::nlohmann::detail::json_base_class<CustomBaseClass>;
-
-  JSON_PRIVATE_UNLESS_TESTED:
-    // convenience aliases for types residing in namespace detail;
-    using lexer = ::nlohmann::detail::lexer_base<basic_json>;
-
-    template<typename InputAdapterType>
-    static ::nlohmann::detail::parser<basic_json, InputAdapterType> parser(
-        InputAdapterType adapter,
-        detail::parser_callback_t<basic_json>cb = nullptr,
-        const bool allow_exceptions = true,
-        const bool ignore_comments = false
-                                 )
-    {
-        return ::nlohmann::detail::parser<basic_json, InputAdapterType>(std::move(adapter),
-                std::move(cb), allow_exceptions, ignore_comments);
-    }
-
-  private:
-    using primitive_iterator_t = ::nlohmann::detail::primitive_iterator_t;
-    template<typename BasicJsonType>
-    using internal_iterator = ::nlohmann::detail::internal_iterator<BasicJsonType>;
-    template<typename BasicJsonType>
-    using iter_impl = ::nlohmann::detail::iter_impl<BasicJsonType>;
-    template<typename Iterator>
-    using iteration_proxy = ::nlohmann::detail::iteration_proxy<Iterator>;
-    template<typename Base> using json_reverse_iterator = ::nlohmann::detail::json_reverse_iterator<Base>;
-
-    template<typename CharType>
-    using output_adapter_t = ::nlohmann::detail::output_adapter_t<CharType>;
-
-    template<typename InputType>
-    using binary_reader = ::nlohmann::detail::binary_reader<basic_json, InputType>;
-    template<typename CharType> using binary_writer = ::nlohmann::detail::binary_writer<basic_json, CharType>;
-
-  JSON_PRIVATE_UNLESS_TESTED:
-    using serializer = ::nlohmann::detail::serializer<basic_json>;
-
-  public:
-    using value_t = detail::value_t;
-    /// JSON Pointer, see @ref nlohmann::json_pointer
-    using json_pointer = ::nlohmann::json_pointer<StringType>;
-    template<typename T, typename SFINAE>
-    using json_serializer = JSONSerializer<T, SFINAE>;
-    /// how to treat decoding errors
-    using error_handler_t = detail::error_handler_t;
-    /// how to treat CBOR tags
-    using cbor_tag_handler_t = detail::cbor_tag_handler_t;
-    /// helper type for initializer lists of basic_json values
-    using initializer_list_t = std::initializer_list<detail::json_ref<basic_json>>;
-
-    using input_format_t = detail::input_format_t;
-    /// SAX interface type, see @ref nlohmann::json_sax
-    using json_sax_t = json_sax<basic_json>;
-
-    ////////////////
-    // exceptions //
-    ////////////////
-
-    /// @name exceptions
-    /// Classes to implement user-defined exceptions.
-    /// @{
-
-    using exception = detail::exception;
-    using parse_error = detail::parse_error;
-    using invalid_iterator = detail::invalid_iterator;
-    using type_error = detail::type_error;
-    using out_of_range = detail::out_of_range;
-    using other_error = detail::other_error;
-
-    /// @}
-
-
-    /////////////////////
-    // container types //
-    /////////////////////
-
-    /// @name container types
-    /// The canonic container types to use @ref basic_json like any other STL
-    /// container.
-    /// @{
-
-    /// the type of elements in a basic_json container
-    using value_type = basic_json;
-
-    /// the type of an element reference
-    using reference = value_type&;
-    /// the type of an element const reference
-    using const_reference = const value_type&;
-
-    /// a type to represent differences between iterators
-    using difference_type = std::ptrdiff_t;
-    /// a type to represent container sizes
-    using size_type = std::size_t;
-
-    /// the allocator type
-    using allocator_type = AllocatorType<basic_json>;
-
-    /// the type of an element pointer
-    using pointer = typename std::allocator_traits<allocator_type>::pointer;
-    /// the type of an element const pointer
-    using const_pointer = typename std::allocator_traits<allocator_type>::const_pointer;
-
-    /// an iterator for a basic_json container
-    using iterator = iter_impl<basic_json>;
-    /// a const iterator for a basic_json container
-    using const_iterator = iter_impl<const basic_json>;
-    /// a reverse iterator for a basic_json container
-    using reverse_iterator = json_reverse_iterator<typename basic_json::iterator>;
-    /// a const reverse iterator for a basic_json container
-    using const_reverse_iterator = json_reverse_iterator<typename basic_json::const_iterator>;
-
-    /// @}
-
-
-    /// @brief returns the allocator associated with the container
-    /// @sa https://json.nlohmann.me/api/basic_json/get_allocator/
-    static allocator_type get_allocator()
-    {
-        return allocator_type();
-    }
-
-    /// @brief returns version information on the library
-    /// @sa https://json.nlohmann.me/api/basic_json/meta/
-    JSON_HEDLEY_WARN_UNUSED_RESULT
-    static basic_json meta()
-    {
-        basic_json result;
-
-        result["copyright"] = "(C) 2013-2022 Niels Lohmann";
-        result["name"] = "JSON for Modern C++";
-        result["url"] = "https://github.com/nlohmann/json";
-        result["version"]["string"] =
-            detail::concat(std::to_string(NLOHMANN_JSON_VERSION_MAJOR), '.',
-                           std::to_string(NLOHMANN_JSON_VERSION_MINOR), '.',
-                           std::to_string(NLOHMANN_JSON_VERSION_PATCH));
-        result["version"]["major"] = NLOHMANN_JSON_VERSION_MAJOR;
-        result["version"]["minor"] = NLOHMANN_JSON_VERSION_MINOR;
-        result["version"]["patch"] = NLOHMANN_JSON_VERSION_PATCH;
-
-#ifdef _WIN32
-        result["platform"] = "win32";
-#elif defined __linux__
-        result["platform"] = "linux";
-#elif defined __APPLE__
-        result["platform"] = "apple";
-#elif defined __unix__
-        result["platform"] = "unix";
-#else
-        result["platform"] = "unknown";
-#endif
-
-#if defined(__ICC) || defined(__INTEL_COMPILER)
-        result["compiler"] = {{"family", "icc"}, {"version", __INTEL_COMPILER}};
-#elif defined(__clang__)
-        result["compiler"] = {{"family", "clang"}, {"version", __clang_version__}};
-#elif defined(__GNUC__) || defined(__GNUG__)
-        result["compiler"] = {{"family", "gcc"}, {"version", detail::concat(
-                    std::to_string(__GNUC__), '.',
-                    std::to_string(__GNUC_MINOR__), '.',
-                    std::to_string(__GNUC_PATCHLEVEL__))
-            }
-        };
-#elif defined(__HP_cc) || defined(__HP_aCC)
-        result["compiler"] = "hp"
-#elif defined(__IBMCPP__)
-        result["compiler"] = {{"family", "ilecpp"}, {"version", __IBMCPP__}};
-#elif defined(_MSC_VER)
-        result["compiler"] = {{"family", "msvc"}, {"version", _MSC_VER}};
-#elif defined(__PGI)
-        result["compiler"] = {{"family", "pgcpp"}, {"version", __PGI}};
-#elif defined(__SUNPRO_CC)
-        result["compiler"] = {{"family", "sunpro"}, {"version", __SUNPRO_CC}};
-#else
-        result["compiler"] = {{"family", "unknown"}, {"version", "unknown"}};
-#endif
-
-
-#if defined(_MSVC_LANG)
-        result["compiler"]["c++"] = std::to_string(_MSVC_LANG);
-#elif defined(__cplusplus)
-        result["compiler"]["c++"] = std::to_string(__cplusplus);
-#else
-        result["compiler"]["c++"] = "unknown";
-#endif
-        return result;
-    }
-
-
-    ///////////////////////////
-    // JSON value data types //
-    ///////////////////////////
-
-    /// @name JSON value data types
-    /// The data types to store a JSON value. These types are derived from
-    /// the template arguments passed to class @ref basic_json.
-    /// @{
-
-    /// @brief default object key comparator type
-    /// The actual object key comparator type (@ref object_comparator_t) may be
-    /// different.
-    /// @sa https://json.nlohmann.me/api/basic_json/default_object_comparator_t/
-#if defined(JSON_HAS_CPP_14)
-    // use of transparent comparator avoids unnecessary repeated construction of temporaries
-    // in functions involving lookup by key with types other than object_t::key_type (aka. StringType)
-    using default_object_comparator_t = std::less<>;
-#else
-    using default_object_comparator_t = std::less<StringType>;
-#endif
-
-    /// @brief a type for an object
-    /// @sa https://json.nlohmann.me/api/basic_json/object_t/
-    using object_t = ObjectType<StringType,
-          basic_json,
-          default_object_comparator_t,
-          AllocatorType<std::pair<const StringType,
-          basic_json>>>;
-
-    /// @brief a type for an array
-    /// @sa https://json.nlohmann.me/api/basic_json/array_t/
-    using array_t = ArrayType<basic_json, AllocatorType<basic_json>>;
-
-    /// @brief a type for a string
-    /// @sa https://json.nlohmann.me/api/basic_json/string_t/
-    using string_t = StringType;
-
-    /// @brief a type for a boolean
-    /// @sa https://json.nlohmann.me/api/basic_json/boolean_t/
-    using boolean_t = BooleanType;
-
-    /// @brief a type for a number (integer)
-    /// @sa https://json.nlohmann.me/api/basic_json/number_integer_t/
-    using number_integer_t = NumberIntegerType;
-
-    /// @brief a type for a number (unsigned)
-    /// @sa https://json.nlohmann.me/api/basic_json/number_unsigned_t/
-    using number_unsigned_t = NumberUnsignedType;
-
-    /// @brief a type for a number (floating-point)
-    /// @sa https://json.nlohmann.me/api/basic_json/number_float_t/
-    using number_float_t = NumberFloatType;
-
-    /// @brief a type for a packed binary type
-    /// @sa https://json.nlohmann.me/api/basic_json/binary_t/
-    using binary_t = nlohmann::byte_container_with_subtype<BinaryType>;
-
-    /// @brief object key comparator type
-    /// @sa https://json.nlohmann.me/api/basic_json/object_comparator_t/
-    using object_comparator_t = detail::actual_object_comparator_t<basic_json>;
-
-    /// @}
-
-  private:
-
-    /// helper for exception-safe object creation
-    template<typename T, typename... Args>
-    JSON_HEDLEY_RETURNS_NON_NULL
-    static T* create(Args&& ... args)
-    {
-        AllocatorType<T> alloc;
-        using AllocatorTraits = std::allocator_traits<AllocatorType<T>>;
-
-        auto deleter = [&](T * obj)
-        {
-            AllocatorTraits::deallocate(alloc, obj, 1);
-        };
-        std::unique_ptr<T, decltype(deleter)> obj(AllocatorTraits::allocate(alloc, 1), deleter);
-        AllocatorTraits::construct(alloc, obj.get(), std::forward<Args>(args)...);
-        JSON_ASSERT(obj != nullptr);
-        return obj.release();
-    }
-
-    ////////////////////////
-    // JSON value storage //
-    ////////////////////////
-
-  JSON_PRIVATE_UNLESS_TESTED:
-    /*!
-    @brief a JSON value
-
-    The actual storage for a JSON value of the @ref basic_json class. This
-    union combines the different storage types for the JSON value types
-    defined in @ref value_t.
-
-    JSON type | value_t type    | used type
-    --------- | --------------- | ------------------------
-    object    | object          | pointer to @ref object_t
-    array     | array           | pointer to @ref array_t
-    string    | string          | pointer to @ref string_t
-    boolean   | boolean         | @ref boolean_t
-    number    | number_integer  | @ref number_integer_t
-    number    | number_unsigned | @ref number_unsigned_t
-    number    | number_float    | @ref number_float_t
-    binary    | binary          | pointer to @ref binary_t
-    null      | null            | *no value is stored*
-
-    @note Variable-length types (objects, arrays, and strings) are stored as
-    pointers. The size of the union should not exceed 64 bits if the default
-    value types are used.
-
-    @since version 1.0.0
-    */
-    union json_value
-    {
-        /// object (stored with pointer to save storage)
-        object_t* object;
-        /// array (stored with pointer to save storage)
-        array_t* array;
-        /// string (stored with pointer to save storage)
-        string_t* string;
-        /// binary (stored with pointer to save storage)
-        binary_t* binary;
-        /// boolean
-        boolean_t boolean;
-        /// number (integer)
-        number_integer_t number_integer;
-        /// number (unsigned integer)
-        number_unsigned_t number_unsigned;
-        /// number (floating-point)
-        number_float_t number_float;
-
-        /// default constructor (for null values)
-        json_value() = default;
-        /// constructor for booleans
-        json_value(boolean_t v) noexcept : boolean(v) {}
-        /// constructor for numbers (integer)
-        json_value(number_integer_t v) noexcept : number_integer(v) {}
-        /// constructor for numbers (unsigned)
-        json_value(number_unsigned_t v) noexcept : number_unsigned(v) {}
-        /// constructor for numbers (floating-point)
-        json_value(number_float_t v) noexcept : number_float(v) {}
-        /// constructor for empty values of a given type
-        json_value(value_t t)
-        {
-            switch (t)
-            {
-                case value_t::object:
-                {
-                    object = create<object_t>();
-                    break;
-                }
-
-                case value_t::array:
-                {
-                    array = create<array_t>();
-                    break;
-                }
-
-                case value_t::string:
-                {
-                    string = create<string_t>("");
-                    break;
-                }
-
-                case value_t::binary:
-                {
-                    binary = create<binary_t>();
-                    break;
-                }
-
-                case value_t::boolean:
-                {
-                    boolean = static_cast<boolean_t>(false);
-                    break;
-                }
-
-                case value_t::number_integer:
-                {
-                    number_integer = static_cast<number_integer_t>(0);
-                    break;
-                }
-
-                case value_t::number_unsigned:
-                {
-                    number_unsigned = static_cast<number_unsigned_t>(0);
-                    break;
-                }
-
-                case value_t::number_float:
-                {
-                    number_float = static_cast<number_float_t>(0.0);
-                    break;
-                }
-
-                case value_t::null:
-                {
-                    object = nullptr;  // silence warning, see #821
-                    break;
-                }
-
-                case value_t::discarded:
-                default:
-                {
-                    object = nullptr;  // silence warning, see #821
-                    if (JSON_HEDLEY_UNLIKELY(t == value_t::null))
-                    {
-                        JSON_THROW(other_error::create(500, "961c151d2e87f2686a955a9be24d316f1362bf21 3.11.2", nullptr)); // LCOV_EXCL_LINE
-                    }
-                    break;
-                }
-            }
-        }
-
-        /// constructor for strings
-        json_value(const string_t& value) : string(create<string_t>(value)) {}
-
-        /// constructor for rvalue strings
-        json_value(string_t&& value) : string(create<string_t>(std::move(value))) {}
-
-        /// constructor for objects
-        json_value(const object_t& value) : object(create<object_t>(value)) {}
-
-        /// constructor for rvalue objects
-        json_value(object_t&& value) : object(create<object_t>(std::move(value))) {}
-
-        /// constructor for arrays
-        json_value(const array_t& value) : array(create<array_t>(value)) {}
-
-        /// constructor for rvalue arrays
-        json_value(array_t&& value) : array(create<array_t>(std::move(value))) {}
-
-        /// constructor for binary arrays
-        json_value(const typename binary_t::container_type& value) : binary(create<binary_t>(value)) {}
-
-        /// constructor for rvalue binary arrays
-        json_value(typename binary_t::container_type&& value) : binary(create<binary_t>(std::move(value))) {}
-
-        /// constructor for binary arrays (internal type)
-        json_value(const binary_t& value) : binary(create<binary_t>(value)) {}
-
-        /// constructor for rvalue binary arrays (internal type)
-        json_value(binary_t&& value) : binary(create<binary_t>(std::move(value))) {}
-
-        void destroy(value_t t)
-        {
-            if (
-                (t == value_t::object && object == nullptr) ||
-                (t == value_t::array && array == nullptr) ||
-                (t == value_t::string && string == nullptr) ||
-                (t == value_t::binary && binary == nullptr)
-            )
-            {
-                //not initialized (e.g. due to exception in the ctor)
-                return;
-            }
-            if (t == value_t::array || t == value_t::object)
-            {
-                // flatten the current json_value to a heap-allocated stack
-                std::vector<basic_json> stack;
-
-                // move the top-level items to stack
-                if (t == value_t::array)
-                {
-                    stack.reserve(array->size());
-                    std::move(array->begin(), array->end(), std::back_inserter(stack));
-                }
-                else
-                {
-                    stack.reserve(object->size());
-                    for (auto&& it : *object)
-                    {
-                        stack.push_back(std::move(it.second));
-                    }
-                }
-
-                while (!stack.empty())
-                {
-                    // move the last item to local variable to be processed
-                    basic_json current_item(std::move(stack.back()));
-                    stack.pop_back();
-
-                    // if current_item is array/object, move
-                    // its children to the stack to be processed later
-                    if (current_item.is_array())
-                    {
-                        std::move(current_item.m_data.m_value.array->begin(), current_item.m_data.m_value.array->end(), std::back_inserter(stack));
-
-                        current_item.m_data.m_value.array->clear();
-                    }
-                    else if (current_item.is_object())
-                    {
-                        for (auto&& it : *current_item.m_data.m_value.object)
-                        {
-                            stack.push_back(std::move(it.second));
-                        }
-
-                        current_item.m_data.m_value.object->clear();
-                    }
-
-                    // it's now safe that current_item get destructed
-                    // since it doesn't have any children
-                }
-            }
-
-            switch (t)
-            {
-                case value_t::object:
-                {
-                    AllocatorType<object_t> alloc;
-                    std::allocator_traits<decltype(alloc)>::destroy(alloc, object);
-                    std::allocator_traits<decltype(alloc)>::deallocate(alloc, object, 1);
-                    break;
-                }
-
-                case value_t::array:
-                {
-                    AllocatorType<array_t> alloc;
-                    std::allocator_traits<decltype(alloc)>::destroy(alloc, array);
-                    std::allocator_traits<decltype(alloc)>::deallocate(alloc, array, 1);
-                    break;
-                }
-
-                case value_t::string:
-                {
-                    AllocatorType<string_t> alloc;
-                    std::allocator_traits<decltype(alloc)>::destroy(alloc, string);
-                    std::allocator_traits<decltype(alloc)>::deallocate(alloc, string, 1);
-                    break;
-                }
-
-                case value_t::binary:
-                {
-                    AllocatorType<binary_t> alloc;
-                    std::allocator_traits<decltype(alloc)>::destroy(alloc, binary);
-                    std::allocator_traits<decltype(alloc)>::deallocate(alloc, binary, 1);
-                    break;
-                }
-
-                case value_t::null:
-                case value_t::boolean:
-                case value_t::number_integer:
-                case value_t::number_unsigned:
-                case value_t::number_float:
-                case value_t::discarded:
-                default:
-                {
-                    break;
-                }
-            }
-        }
-    };
-
-  private:
-    /*!
-    @brief checks the class invariants
-
-    This function asserts the class invariants. It needs to be called at the
-    end of every constructor to make sure that created objects respect the
-    invariant. Furthermore, it has to be called each time the type of a JSON
-    value is changed, because the invariant expresses a relationship between
-    @a m_type and @a m_value.
-
-    Furthermore, the parent relation is checked for arrays and objects: If
-    @a check_parents true and the value is an array or object, then the
-    container's elements must have the current value as parent.
-
-    @param[in] check_parents  whether the parent relation should be checked.
-               The value is true by default and should only be set to false
-               during destruction of objects when the invariant does not
-               need to hold.
-    */
-    void assert_invariant(bool check_parents = true) const noexcept
-    {
-        JSON_ASSERT(m_data.m_type != value_t::object || m_data.m_value.object != nullptr);
-        JSON_ASSERT(m_data.m_type != value_t::array || m_data.m_value.array != nullptr);
-        JSON_ASSERT(m_data.m_type != value_t::string || m_data.m_value.string != nullptr);
-        JSON_ASSERT(m_data.m_type != value_t::binary || m_data.m_value.binary != nullptr);
-
-#if JSON_DIAGNOSTICS
-        JSON_TRY
-        {
-            // cppcheck-suppress assertWithSideEffect
-            JSON_ASSERT(!check_parents || !is_structured() || std::all_of(begin(), end(), [this](const basic_json & j)
-            {
-                return j.m_parent == this;
-            }));
-        }
-        JSON_CATCH(...) {} // LCOV_EXCL_LINE
-#endif
-        static_cast<void>(check_parents);
-    }
-
-    void set_parents()
-    {
-#if JSON_DIAGNOSTICS
-        switch (m_data.m_type)
-        {
-            case value_t::array:
-            {
-                for (auto& element : *m_data.m_value.array)
-                {
-                    element.m_parent = this;
-                }
-                break;
-            }
-
-            case value_t::object:
-            {
-                for (auto& element : *m_data.m_value.object)
-                {
-                    element.second.m_parent = this;
-                }
-                break;
-            }
-
-            case value_t::null:
-            case value_t::string:
-            case value_t::boolean:
-            case value_t::number_integer:
-            case value_t::number_unsigned:
-            case value_t::number_float:
-            case value_t::binary:
-            case value_t::discarded:
-            default:
-                break;
-        }
-#endif
-    }
-
-    iterator set_parents(iterator it, typename iterator::difference_type count_set_parents)
-    {
-#if JSON_DIAGNOSTICS
-        for (typename iterator::difference_type i = 0; i < count_set_parents; ++i)
-        {
-            (it + i)->m_parent = this;
-        }
-#else
-        static_cast<void>(count_set_parents);
-#endif
-        return it;
-    }
-
-    reference set_parent(reference j, std::size_t old_capacity = static_cast<std::size_t>(-1))
-    {
-#if JSON_DIAGNOSTICS
-        if (old_capacity != static_cast<std::size_t>(-1))
-        {
-            // see https://github.com/nlohmann/json/issues/2838
-            JSON_ASSERT(type() == value_t::array);
-            if (JSON_HEDLEY_UNLIKELY(m_data.m_value.array->capacity() != old_capacity))
-            {
-                // capacity has changed: update all parents
-                set_parents();
-                return j;
-            }
-        }
-
-        // ordered_json uses a vector internally, so pointers could have
-        // been invalidated; see https://github.com/nlohmann/json/issues/2962
-#ifdef JSON_HEDLEY_MSVC_VERSION
-#pragma warning(push )
-#pragma warning(disable : 4127) // ignore warning to replace if with if constexpr
-#endif
-        if (detail::is_ordered_map<object_t>::value)
-        {
-            set_parents();
-            return j;
-        }
-#ifdef JSON_HEDLEY_MSVC_VERSION
-#pragma warning( pop )
-#endif
-
-        j.m_parent = this;
-#else
-        static_cast<void>(j);
-        static_cast<void>(old_capacity);
-#endif
-        return j;
-    }
-
-  public:
-    //////////////////////////
-    // JSON parser callback //
-    //////////////////////////
-
-    /// @brief parser event types
-    /// @sa https://json.nlohmann.me/api/basic_json/parse_event_t/
-    using parse_event_t = detail::parse_event_t;
-
-    /// @brief per-element parser callback type
-    /// @sa https://json.nlohmann.me/api/basic_json/parser_callback_t/
-    using parser_callback_t = detail::parser_callback_t<basic_json>;
-
-    //////////////////
-    // constructors //
-    //////////////////
-
-    /// @name constructors and destructors
-    /// Constructors of class @ref basic_json, copy/move constructor, copy
-    /// assignment, static functions creating objects, and the destructor.
-    /// @{
-
-    /// @brief create an empty value with a given type
-    /// @sa https://json.nlohmann.me/api/basic_json/basic_json/
-    basic_json(const value_t v)
-        : m_data(v)
-    {
-        assert_invariant();
-    }
-
-    /// @brief create a null object
-    /// @sa https://json.nlohmann.me/api/basic_json/basic_json/
-    basic_json(std::nullptr_t = nullptr) noexcept // NOLINT(bugprone-exception-escape)
-        : basic_json(value_t::null)
-    {
-        assert_invariant();
-    }
-
-    /// @brief create a JSON value from compatible types
-    /// @sa https://json.nlohmann.me/api/basic_json/basic_json/
-    template < typename CompatibleType,
-               typename U = detail::uncvref_t<CompatibleType>,
-               detail::enable_if_t <
-                   !detail::is_basic_json<U>::value && detail::is_compatible_type<basic_json_t, U>::value, int > = 0 >
-    basic_json(CompatibleType && val) noexcept(noexcept( // NOLINT(bugprone-forwarding-reference-overload,bugprone-exception-escape)
-                JSONSerializer<U>::to_json(std::declval<basic_json_t&>(),
-                                           std::forward<CompatibleType>(val))))
-    {
-        JSONSerializer<U>::to_json(*this, std::forward<CompatibleType>(val));
-        set_parents();
-        assert_invariant();
-    }
-
-    /// @brief create a JSON value from an existing one
-    /// @sa https://json.nlohmann.me/api/basic_json/basic_json/
-    template < typename BasicJsonType,
-               detail::enable_if_t <
-                   detail::is_basic_json<BasicJsonType>::value&& !std::is_same<basic_json, BasicJsonType>::value, int > = 0 >
-    basic_json(const BasicJsonType& val)
-    {
-        using other_boolean_t = typename BasicJsonType::boolean_t;
-        using other_number_float_t = typename BasicJsonType::number_float_t;
-        using other_number_integer_t = typename BasicJsonType::number_integer_t;
-        using other_number_unsigned_t = typename BasicJsonType::number_unsigned_t;
-        using other_string_t = typename BasicJsonType::string_t;
-        using other_object_t = typename BasicJsonType::object_t;
-        using other_array_t = typename BasicJsonType::array_t;
-        using other_binary_t = typename BasicJsonType::binary_t;
-
-        switch (val.type())
-        {
-            case value_t::boolean:
-                JSONSerializer<other_boolean_t>::to_json(*this, val.template get<other_boolean_t>());
-                break;
-            case value_t::number_float:
-                JSONSerializer<other_number_float_t>::to_json(*this, val.template get<other_number_float_t>());
-                break;
-            case value_t::number_integer:
-                JSONSerializer<other_number_integer_t>::to_json(*this, val.template get<other_number_integer_t>());
-                break;
-            case value_t::number_unsigned:
-                JSONSerializer<other_number_unsigned_t>::to_json(*this, val.template get<other_number_unsigned_t>());
-                break;
-            case value_t::string:
-                JSONSerializer<other_string_t>::to_json(*this, val.template get_ref<const other_string_t&>());
-                break;
-            case value_t::object:
-                JSONSerializer<other_object_t>::to_json(*this, val.template get_ref<const other_object_t&>());
-                break;
-            case value_t::array:
-                JSONSerializer<other_array_t>::to_json(*this, val.template get_ref<const other_array_t&>());
-                break;
-            case value_t::binary:
-                JSONSerializer<other_binary_t>::to_json(*this, val.template get_ref<const other_binary_t&>());
-                break;
-            case value_t::null:
-                *this = nullptr;
-                break;
-            case value_t::discarded:
-                m_data.m_type = value_t::discarded;
-                break;
-            default:            // LCOV_EXCL_LINE
-                JSON_ASSERT(false); // NOLINT(cert-dcl03-c,hicpp-static-assert,misc-static-assert) LCOV_EXCL_LINE
-        }
-        JSON_ASSERT(m_data.m_type == val.type());
-        set_parents();
-        assert_invariant();
-    }
-
-    /// @brief create a container (array or object) from an initializer list
-    /// @sa https://json.nlohmann.me/api/basic_json/basic_json/
-    basic_json(initializer_list_t init,
-               bool type_deduction = true,
-               value_t manual_type = value_t::array)
-    {
-        // check if each element is an array with two elements whose first
-        // element is a string
-        bool is_an_object = std::all_of(init.begin(), init.end(),
-                                        [](const detail::json_ref<basic_json>& element_ref)
-        {
-            return element_ref->is_array() && element_ref->size() == 2 && (*element_ref)[0].is_string();
-        });
-
-        // adjust type if type deduction is not wanted
-        if (!type_deduction)
-        {
-            // if array is wanted, do not create an object though possible
-            if (manual_type == value_t::array)
-            {
-                is_an_object = false;
-            }
-
-            // if object is wanted but impossible, throw an exception
-            if (JSON_HEDLEY_UNLIKELY(manual_type == value_t::object && !is_an_object))
-            {
-                JSON_THROW(type_error::create(301, "cannot create object from initializer list", nullptr));
-            }
-        }
-
-        if (is_an_object)
-        {
-            // the initializer list is a list of pairs -> create object
-            m_data.m_type = value_t::object;
-            m_data.m_value = value_t::object;
-
-            for (auto& element_ref : init)
-            {
-                auto element = element_ref.moved_or_copied();
-                m_data.m_value.object->emplace(
-                    std::move(*((*element.m_data.m_value.array)[0].m_data.m_value.string)),
-                    std::move((*element.m_data.m_value.array)[1]));
-            }
-        }
-        else
-        {
-            // the initializer list describes an array -> create array
-            m_data.m_type = value_t::array;
-            m_data.m_value.array = create<array_t>(init.begin(), init.end());
-        }
-
-        set_parents();
-        assert_invariant();
-    }
-
-    /// @brief explicitly create a binary array (without subtype)
-    /// @sa https://json.nlohmann.me/api/basic_json/binary/
-    JSON_HEDLEY_WARN_UNUSED_RESULT
-    static basic_json binary(const typename binary_t::container_type& init)
-    {
-        auto res = basic_json();
-        res.m_data.m_type = value_t::binary;
-        res.m_data.m_value = init;
-        return res;
-    }
-
-    /// @brief explicitly create a binary array (with subtype)
-    /// @sa https://json.nlohmann.me/api/basic_json/binary/
-    JSON_HEDLEY_WARN_UNUSED_RESULT
-    static basic_json binary(const typename binary_t::container_type& init, typename binary_t::subtype_type subtype)
-    {
-        auto res = basic_json();
-        res.m_data.m_type = value_t::binary;
-        res.m_data.m_value = binary_t(init, subtype);
-        return res;
-    }
-
-    /// @brief explicitly create a binary array
-    /// @sa https://json.nlohmann.me/api/basic_json/binary/
-    JSON_HEDLEY_WARN_UNUSED_RESULT
-    static basic_json binary(typename binary_t::container_type&& init)
-    {
-        auto res = basic_json();
-        res.m_data.m_type = value_t::binary;
-        res.m_data.m_value = std::move(init);
-        return res;
-    }
-
-    /// @brief explicitly create a binary array (with subtype)
-    /// @sa https://json.nlohmann.me/api/basic_json/binary/
-    JSON_HEDLEY_WARN_UNUSED_RESULT
-    static basic_json binary(typename binary_t::container_type&& init, typename binary_t::subtype_type subtype)
-    {
-        auto res = basic_json();
-        res.m_data.m_type = value_t::binary;
-        res.m_data.m_value = binary_t(std::move(init), subtype);
-        return res;
-    }
-
-    /// @brief explicitly create an array from an initializer list
-    /// @sa https://json.nlohmann.me/api/basic_json/array/
-    JSON_HEDLEY_WARN_UNUSED_RESULT
-    static basic_json array(initializer_list_t init = {})
-    {
-        return basic_json(init, false, value_t::array);
-    }
-
-    /// @brief explicitly create an object from an initializer list
-    /// @sa https://json.nlohmann.me/api/basic_json/object/
-    JSON_HEDLEY_WARN_UNUSED_RESULT
-    static basic_json object(initializer_list_t init = {})
-    {
-        return basic_json(init, false, value_t::object);
-    }
-
-    /// @brief construct an array with count copies of given value
-    /// @sa https://json.nlohmann.me/api/basic_json/basic_json/
-    basic_json(size_type cnt, const basic_json& val):
-        m_data{cnt, val}
-    {
-        set_parents();
-        assert_invariant();
-    }
-
-    /// @brief construct a JSON container given an iterator range
-    /// @sa https://json.nlohmann.me/api/basic_json/basic_json/
-    template < class InputIT, typename std::enable_if <
-                   std::is_same<InputIT, typename basic_json_t::iterator>::value ||
-                   std::is_same<InputIT, typename basic_json_t::const_iterator>::value, int >::type = 0 >
-    basic_json(InputIT first, InputIT last)
-    {
-        JSON_ASSERT(first.m_object != nullptr);
-        JSON_ASSERT(last.m_object != nullptr);
-
-        // make sure iterator fits the current value
-        if (JSON_HEDLEY_UNLIKELY(first.m_object != last.m_object))
-        {
-            JSON_THROW(invalid_iterator::create(201, "iterators are not compatible", nullptr));
-        }
-
-        // copy type from first iterator
-        m_data.m_type = first.m_object->m_data.m_type;
-
-        // check if iterator range is complete for primitive values
-        switch (m_data.m_type)
-        {
-            case value_t::boolean:
-            case value_t::number_float:
-            case value_t::number_integer:
-            case value_t::number_unsigned:
-            case value_t::string:
-            {
-                if (JSON_HEDLEY_UNLIKELY(!first.m_it.primitive_iterator.is_begin()
-                                         || !last.m_it.primitive_iterator.is_end()))
-                {
-                    JSON_THROW(invalid_iterator::create(204, "iterators out of range", first.m_object));
-                }
-                break;
-            }
-
-            case value_t::null:
-            case value_t::object:
-            case value_t::array:
-            case value_t::binary:
-            case value_t::discarded:
-            default:
-                break;
-        }
-
-        switch (m_data.m_type)
-        {
-            case value_t::number_integer:
-            {
-                m_data.m_value.number_integer = first.m_object->m_data.m_value.number_integer;
-                break;
-            }
-
-            case value_t::number_unsigned:
-            {
-                m_data.m_value.number_unsigned = first.m_object->m_data.m_value.number_unsigned;
-                break;
-            }
-
-            case value_t::number_float:
-            {
-                m_data.m_value.number_float = first.m_object->m_data.m_value.number_float;
-                break;
-            }
-
-            case value_t::boolean:
-            {
-                m_data.m_value.boolean = first.m_object->m_data.m_value.boolean;
-                break;
-            }
-
-            case value_t::string:
-            {
-                m_data.m_value = *first.m_object->m_data.m_value.string;
-                break;
-            }
-
-            case value_t::object:
-            {
-                m_data.m_value.object = create<object_t>(first.m_it.object_iterator,
-                                        last.m_it.object_iterator);
-                break;
-            }
-
-            case value_t::array:
-            {
-                m_data.m_value.array = create<array_t>(first.m_it.array_iterator,
-                                                       last.m_it.array_iterator);
-                break;
-            }
-
-            case value_t::binary:
-            {
-                m_data.m_value = *first.m_object->m_data.m_value.binary;
-                break;
-            }
-
-            case value_t::null:
-            case value_t::discarded:
-            default:
-                JSON_THROW(invalid_iterator::create(206, detail::concat("cannot construct with iterators from ", first.m_object->type_name()), first.m_object));
-        }
-
-        set_parents();
-        assert_invariant();
-    }
-
-
-    ///////////////////////////////////////
-    // other constructors and destructor //
-    ///////////////////////////////////////
-
-    template<typename JsonRef,
-             detail::enable_if_t<detail::conjunction<detail::is_json_ref<JsonRef>,
-                                 std::is_same<typename JsonRef::value_type, basic_json>>::value, int> = 0 >
-    basic_json(const JsonRef& ref) : basic_json(ref.moved_or_copied()) {}
-
-    /// @brief copy constructor
-    /// @sa https://json.nlohmann.me/api/basic_json/basic_json/
-    basic_json(const basic_json& other)
-        : json_base_class_t(other)
-    {
-        m_data.m_type = other.m_data.m_type;
-        // check of passed value is valid
-        other.assert_invariant();
-
-        switch (m_data.m_type)
-        {
-            case value_t::object:
-            {
-                m_data.m_value = *other.m_data.m_value.object;
-                break;
-            }
-
-            case value_t::array:
-            {
-                m_data.m_value = *other.m_data.m_value.array;
-                break;
-            }
-
-            case value_t::string:
-            {
-                m_data.m_value = *other.m_data.m_value.string;
-                break;
-            }
-
-            case value_t::boolean:
-            {
-                m_data.m_value = other.m_data.m_value.boolean;
-                break;
-            }
-
-            case value_t::number_integer:
-            {
-                m_data.m_value = other.m_data.m_value.number_integer;
-                break;
-            }
-
-            case value_t::number_unsigned:
-            {
-                m_data.m_value = other.m_data.m_value.number_unsigned;
-                break;
-            }
-
-            case value_t::number_float:
-            {
-                m_data.m_value = other.m_data.m_value.number_float;
-                break;
-            }
-
-            case value_t::binary:
-            {
-                m_data.m_value = *other.m_data.m_value.binary;
-                break;
-            }
-
-            case value_t::null:
-            case value_t::discarded:
-            default:
-                break;
-        }
-
-        set_parents();
-        assert_invariant();
-    }
-
-    /// @brief move constructor
-    /// @sa https://json.nlohmann.me/api/basic_json/basic_json/
-    basic_json(basic_json&& other) noexcept
-        : json_base_class_t(std::move(other)),
-          m_data(std::move(other.m_data))
-    {
-        // check that passed value is valid
-        other.assert_invariant(false); // NOLINT(bugprone-use-after-move,hicpp-invalid-access-moved)
-
-        // invalidate payload
-        other.m_data.m_type = value_t::null;
-        other.m_data.m_value = {};
-
-        set_parents();
-        assert_invariant();
-    }
-
-    /// @brief copy assignment
-    /// @sa https://json.nlohmann.me/api/basic_json/operator=/
-    basic_json& operator=(basic_json other) noexcept (
-        std::is_nothrow_move_constructible<value_t>::value&&
-        std::is_nothrow_move_assignable<value_t>::value&&
-        std::is_nothrow_move_constructible<json_value>::value&&
-        std::is_nothrow_move_assignable<json_value>::value&&
-        std::is_nothrow_move_assignable<json_base_class_t>::value
-    )
-    {
-        // check that passed value is valid
-        other.assert_invariant();
-
-        using std::swap;
-        swap(m_data.m_type, other.m_data.m_type);
-        swap(m_data.m_value, other.m_data.m_value);
-        json_base_class_t::operator=(std::move(other));
-
-        set_parents();
-        assert_invariant();
-        return *this;
-    }
-
-    /// @brief destructor
-    /// @sa https://json.nlohmann.me/api/basic_json/~basic_json/
-    ~basic_json() noexcept
-    {
-        assert_invariant(false);
-    }
-
-    /// @}
-
-  public:
-    ///////////////////////
-    // object inspection //
-    ///////////////////////
-
-    /// @name object inspection
-    /// Functions to inspect the type of a JSON value.
-    /// @{
-
-    /// @brief serialization
-    /// @sa https://json.nlohmann.me/api/basic_json/dump/
-    string_t dump(const int indent = -1,
-                  const char indent_char = ' ',
-                  const bool ensure_ascii = false,
-                  const error_handler_t error_handler = error_handler_t::strict) const
-    {
-        string_t result;
-        serializer s(detail::output_adapter<char, string_t>(result), indent_char, error_handler);
-
-        if (indent >= 0)
-        {
-            s.dump(*this, true, ensure_ascii, static_cast<unsigned int>(indent));
-        }
-        else
-        {
-            s.dump(*this, false, ensure_ascii, 0);
-        }
-
-        return result;
-    }
-
-    /// @brief return the type of the JSON value (explicit)
-    /// @sa https://json.nlohmann.me/api/basic_json/type/
-    constexpr value_t type() const noexcept
-    {
-        return m_data.m_type;
-    }
-
-    /// @brief return whether type is primitive
-    /// @sa https://json.nlohmann.me/api/basic_json/is_primitive/
-    constexpr bool is_primitive() const noexcept
-    {
-        return is_null() || is_string() || is_boolean() || is_number() || is_binary();
-    }
-
-    /// @brief return whether type is structured
-    /// @sa https://json.nlohmann.me/api/basic_json/is_structured/
-    constexpr bool is_structured() const noexcept
-    {
-        return is_array() || is_object();
-    }
-
-    /// @brief return whether value is null
-    /// @sa https://json.nlohmann.me/api/basic_json/is_null/
-    constexpr bool is_null() const noexcept
-    {
-        return m_data.m_type == value_t::null;
-    }
-
-    /// @brief return whether value is a boolean
-    /// @sa https://json.nlohmann.me/api/basic_json/is_boolean/
-    constexpr bool is_boolean() const noexcept
-    {
-        return m_data.m_type == value_t::boolean;
-    }
-
-    /// @brief return whether value is a number
-    /// @sa https://json.nlohmann.me/api/basic_json/is_number/
-    constexpr bool is_number() const noexcept
-    {
-        return is_number_integer() || is_number_float();
-    }
-
-    /// @brief return whether value is an integer number
-    /// @sa https://json.nlohmann.me/api/basic_json/is_number_integer/
-    constexpr bool is_number_integer() const noexcept
-    {
-        return m_data.m_type == value_t::number_integer || m_data.m_type == value_t::number_unsigned;
-    }
-
-    /// @brief return whether value is an unsigned integer number
-    /// @sa https://json.nlohmann.me/api/basic_json/is_number_unsigned/
-    constexpr bool is_number_unsigned() const noexcept
-    {
-        return m_data.m_type == value_t::number_unsigned;
-    }
-
-    /// @brief return whether value is a floating-point number
-    /// @sa https://json.nlohmann.me/api/basic_json/is_number_float/
-    constexpr bool is_number_float() const noexcept
-    {
-        return m_data.m_type == value_t::number_float;
-    }
-
-    /// @brief return whether value is an object
-    /// @sa https://json.nlohmann.me/api/basic_json/is_object/
-    constexpr bool is_object() const noexcept
-    {
-        return m_data.m_type == value_t::object;
-    }
-
-    /// @brief return whether value is an array
-    /// @sa https://json.nlohmann.me/api/basic_json/is_array/
-    constexpr bool is_array() const noexcept
-    {
-        return m_data.m_type == value_t::array;
-    }
-
-    /// @brief return whether value is a string
-    /// @sa https://json.nlohmann.me/api/basic_json/is_string/
-    constexpr bool is_string() const noexcept
-    {
-        return m_data.m_type == value_t::string;
-    }
-
-    /// @brief return whether value is a binary array
-    /// @sa https://json.nlohmann.me/api/basic_json/is_binary/
-    constexpr bool is_binary() const noexcept
-    {
-        return m_data.m_type == value_t::binary;
-    }
-
-    /// @brief return whether value is discarded
-    /// @sa https://json.nlohmann.me/api/basic_json/is_discarded/
-    constexpr bool is_discarded() const noexcept
-    {
-        return m_data.m_type == value_t::discarded;
-    }
-
-    /// @brief return the type of the JSON value (implicit)
-    /// @sa https://json.nlohmann.me/api/basic_json/operator_value_t/
-    constexpr operator value_t() const noexcept
-    {
-        return m_data.m_type;
-    }
-
-    /// @}
-
-  private:
-    //////////////////
-    // value access //
-    //////////////////
-
-    /// get a boolean (explicit)
-    boolean_t get_impl(boolean_t* /*unused*/) const
-    {
-        if (JSON_HEDLEY_LIKELY(is_boolean()))
-        {
-            return m_data.m_value.boolean;
-        }
-
-        JSON_THROW(type_error::create(302, detail::concat("type must be boolean, but is ", type_name()), this));
-    }
-
-    /// get a pointer to the value (object)
-    object_t* get_impl_ptr(object_t* /*unused*/) noexcept
-    {
-        return is_object() ? m_data.m_value.object : nullptr;
-    }
-
-    /// get a pointer to the value (object)
-    constexpr const object_t* get_impl_ptr(const object_t* /*unused*/) const noexcept
-    {
-        return is_object() ? m_data.m_value.object : nullptr;
-    }
-
-    /// get a pointer to the value (array)
-    array_t* get_impl_ptr(array_t* /*unused*/) noexcept
-    {
-        return is_array() ? m_data.m_value.array : nullptr;
-    }
-
-    /// get a pointer to the value (array)
-    constexpr const array_t* get_impl_ptr(const array_t* /*unused*/) const noexcept
-    {
-        return is_array() ? m_data.m_value.array : nullptr;
-    }
-
-    /// get a pointer to the value (string)
-    string_t* get_impl_ptr(string_t* /*unused*/) noexcept
-    {
-        return is_string() ? m_data.m_value.string : nullptr;
-    }
-
-    /// get a pointer to the value (string)
-    constexpr const string_t* get_impl_ptr(const string_t* /*unused*/) const noexcept
-    {
-        return is_string() ? m_data.m_value.string : nullptr;
-    }
-
-    /// get a pointer to the value (boolean)
-    boolean_t* get_impl_ptr(boolean_t* /*unused*/) noexcept
-    {
-        return is_boolean() ? &m_data.m_value.boolean : nullptr;
-    }
-
-    /// get a pointer to the value (boolean)
-    constexpr const boolean_t* get_impl_ptr(const boolean_t* /*unused*/) const noexcept
-    {
-        return is_boolean() ? &m_data.m_value.boolean : nullptr;
-    }
-
-    /// get a pointer to the value (integer number)
-    number_integer_t* get_impl_ptr(number_integer_t* /*unused*/) noexcept
-    {
-        return is_number_integer() ? &m_data.m_value.number_integer : nullptr;
-    }
-
-    /// get a pointer to the value (integer number)
-    constexpr const number_integer_t* get_impl_ptr(const number_integer_t* /*unused*/) const noexcept
-    {
-        return is_number_integer() ? &m_data.m_value.number_integer : nullptr;
-    }
-
-    /// get a pointer to the value (unsigned number)
-    number_unsigned_t* get_impl_ptr(number_unsigned_t* /*unused*/) noexcept
-    {
-        return is_number_unsigned() ? &m_data.m_value.number_unsigned : nullptr;
-    }
-
-    /// get a pointer to the value (unsigned number)
-    constexpr const number_unsigned_t* get_impl_ptr(const number_unsigned_t* /*unused*/) const noexcept
-    {
-        return is_number_unsigned() ? &m_data.m_value.number_unsigned : nullptr;
-    }
-
-    /// get a pointer to the value (floating-point number)
-    number_float_t* get_impl_ptr(number_float_t* /*unused*/) noexcept
-    {
-        return is_number_float() ? &m_data.m_value.number_float : nullptr;
-    }
-
-    /// get a pointer to the value (floating-point number)
-    constexpr const number_float_t* get_impl_ptr(const number_float_t* /*unused*/) const noexcept
-    {
-        return is_number_float() ? &m_data.m_value.number_float : nullptr;
-    }
-
-    /// get a pointer to the value (binary)
-    binary_t* get_impl_ptr(binary_t* /*unused*/) noexcept
-    {
-        return is_binary() ? m_data.m_value.binary : nullptr;
-    }
-
-    /// get a pointer to the value (binary)
-    constexpr const binary_t* get_impl_ptr(const binary_t* /*unused*/) const noexcept
-    {
-        return is_binary() ? m_data.m_value.binary : nullptr;
-    }
-
-    /*!
-    @brief helper function to implement get_ref()
-
-    This function helps to implement get_ref() without code duplication for
-    const and non-const overloads
-
-    @tparam ThisType will be deduced as `basic_json` or `const basic_json`
-
-    @throw type_error.303 if ReferenceType does not match underlying value
-    type of the current JSON
-    */
-    template<typename ReferenceType, typename ThisType>
-    static ReferenceType get_ref_impl(ThisType& obj)
-    {
-        // delegate the call to get_ptr<>()
-        auto* ptr = obj.template get_ptr<typename std::add_pointer<ReferenceType>::type>();
-
-        if (JSON_HEDLEY_LIKELY(ptr != nullptr))
-        {
-            return *ptr;
-        }
-
-        JSON_THROW(type_error::create(303, detail::concat("incompatible ReferenceType for get_ref, actual type is ", obj.type_name()), &obj));
-    }
-
-  public:
-    /// @name value access
-    /// Direct access to the stored value of a JSON value.
-    /// @{
-
-    /// @brief get a pointer value (implicit)
-    /// @sa https://json.nlohmann.me/api/basic_json/get_ptr/
-    template<typename PointerType, typename std::enable_if<
-                 std::is_pointer<PointerType>::value, int>::type = 0>
-    auto get_ptr() noexcept -> decltype(std::declval<basic_json_t&>().get_impl_ptr(std::declval<PointerType>()))
-    {
-        // delegate the call to get_impl_ptr<>()
-        return get_impl_ptr(static_cast<PointerType>(nullptr));
-    }
-
-    /// @brief get a pointer value (implicit)
-    /// @sa https://json.nlohmann.me/api/basic_json/get_ptr/
-    template < typename PointerType, typename std::enable_if <
-                   std::is_pointer<PointerType>::value&&
-                   std::is_const<typename std::remove_pointer<PointerType>::type>::value, int >::type = 0 >
-    constexpr auto get_ptr() const noexcept -> decltype(std::declval<const basic_json_t&>().get_impl_ptr(std::declval<PointerType>()))
-    {
-        // delegate the call to get_impl_ptr<>() const
-        return get_impl_ptr(static_cast<PointerType>(nullptr));
-    }
-
-  private:
-    /*!
-    @brief get a value (explicit)
-
-    Explicit type conversion between the JSON value and a compatible value
-    which is [CopyConstructible](https://en.cppreference.com/w/cpp/named_req/CopyConstructible)
-    and [DefaultConstructible](https://en.cppreference.com/w/cpp/named_req/DefaultConstructible).
-    The value is converted by calling the @ref json_serializer<ValueType>
-    `from_json()` method.
-
-    The function is equivalent to executing
-    @code {.cpp}
-    ValueType ret;
-    JSONSerializer<ValueType>::from_json(*this, ret);
-    return ret;
-    @endcode
-
-    This overloads is chosen if:
-    - @a ValueType is not @ref basic_json,
-    - @ref json_serializer<ValueType> has a `from_json()` method of the form
-      `void from_json(const basic_json&, ValueType&)`, and
-    - @ref json_serializer<ValueType> does not have a `from_json()` method of
-      the form `ValueType from_json(const basic_json&)`
-
-    @tparam ValueType the returned value type
-
-    @return copy of the JSON value, converted to @a ValueType
-
-    @throw what @ref json_serializer<ValueType> `from_json()` method throws
-
-    @liveexample{The example below shows several conversions from JSON values
-    to other types. There a few things to note: (1) Floating-point numbers can
-    be converted to integers\, (2) A JSON array can be converted to a standard
-    `std::vector<short>`\, (3) A JSON object can be converted to C++
-    associative containers such as `std::unordered_map<std::string\,
-    json>`.,get__ValueType_const}
-
-    @since version 2.1.0
-    */
-    template < typename ValueType,
-               detail::enable_if_t <
-                   detail::is_default_constructible<ValueType>::value&&
-                   detail::has_from_json<basic_json_t, ValueType>::value,
-                   int > = 0 >
-    ValueType get_impl(detail::priority_tag<0> /*unused*/) const noexcept(noexcept(
-                JSONSerializer<ValueType>::from_json(std::declval<const basic_json_t&>(), std::declval<ValueType&>())))
-    {
-        auto ret = ValueType();
-        JSONSerializer<ValueType>::from_json(*this, ret);
-        return ret;
-    }
-
-    /*!
-    @brief get a value (explicit); special case
-
-    Explicit type conversion between the JSON value and a compatible value
-    which is **not** [CopyConstructible](https://en.cppreference.com/w/cpp/named_req/CopyConstructible)
-    and **not** [DefaultConstructible](https://en.cppreference.com/w/cpp/named_req/DefaultConstructible).
-    The value is converted by calling the @ref json_serializer<ValueType>
-    `from_json()` method.
-
-    The function is equivalent to executing
-    @code {.cpp}
-    return JSONSerializer<ValueType>::from_json(*this);
-    @endcode
-
-    This overloads is chosen if:
-    - @a ValueType is not @ref basic_json and
-    - @ref json_serializer<ValueType> has a `from_json()` method of the form
-      `ValueType from_json(const basic_json&)`
-
-    @note If @ref json_serializer<ValueType> has both overloads of
-    `from_json()`, this one is chosen.
-
-    @tparam ValueType the returned value type
-
-    @return copy of the JSON value, converted to @a ValueType
-
-    @throw what @ref json_serializer<ValueType> `from_json()` method throws
-
-    @since version 2.1.0
-    */
-    template < typename ValueType,
-               detail::enable_if_t <
-                   detail::has_non_default_from_json<basic_json_t, ValueType>::value,
-                   int > = 0 >
-    ValueType get_impl(detail::priority_tag<1> /*unused*/) const noexcept(noexcept(
-                JSONSerializer<ValueType>::from_json(std::declval<const basic_json_t&>())))
-    {
-        return JSONSerializer<ValueType>::from_json(*this);
-    }
-
-    /*!
-    @brief get special-case overload
-
-    This overloads converts the current @ref basic_json in a different
-    @ref basic_json type
-
-    @tparam BasicJsonType == @ref basic_json
-
-    @return a copy of *this, converted into @a BasicJsonType
-
-    @complexity Depending on the implementation of the called `from_json()`
-                method.
-
-    @since version 3.2.0
-    */
-    template < typename BasicJsonType,
-               detail::enable_if_t <
-                   detail::is_basic_json<BasicJsonType>::value,
-                   int > = 0 >
-    BasicJsonType get_impl(detail::priority_tag<2> /*unused*/) const
-    {
-        return *this;
-    }
-
-    /*!
-    @brief get special-case overload
-
-    This overloads avoids a lot of template boilerplate, it can be seen as the
-    identity method
-
-    @tparam BasicJsonType == @ref basic_json
-
-    @return a copy of *this
-
-    @complexity Constant.
-
-    @since version 2.1.0
-    */
-    template<typename BasicJsonType,
-             detail::enable_if_t<
-                 std::is_same<BasicJsonType, basic_json_t>::value,
-                 int> = 0>
-    basic_json get_impl(detail::priority_tag<3> /*unused*/) const
-    {
-        return *this;
-    }
-
-    /*!
-    @brief get a pointer value (explicit)
-    @copydoc get()
-    */
-    template<typename PointerType,
-             detail::enable_if_t<
-                 std::is_pointer<PointerType>::value,
-                 int> = 0>
-    constexpr auto get_impl(detail::priority_tag<4> /*unused*/) const noexcept
-    -> decltype(std::declval<const basic_json_t&>().template get_ptr<PointerType>())
-    {
-        // delegate the call to get_ptr
-        return get_ptr<PointerType>();
-    }
-
-  public:
-    /*!
-    @brief get a (pointer) value (explicit)
-
-    Performs explicit type conversion between the JSON value and a compatible value if required.
-
-    - If the requested type is a pointer to the internally stored JSON value that pointer is returned.
-    No copies are made.
-
-    - If the requested type is the current @ref basic_json, or a different @ref basic_json convertible
-    from the current @ref basic_json.
-
-    - Otherwise the value is converted by calling the @ref json_serializer<ValueType> `from_json()`
-    method.
-
-    @tparam ValueTypeCV the provided value type
-    @tparam ValueType the returned value type
-
-    @return copy of the JSON value, converted to @tparam ValueType if necessary
-
-    @throw what @ref json_serializer<ValueType> `from_json()` method throws if conversion is required
-
-    @since version 2.1.0
-    */
-    template < typename ValueTypeCV, typename ValueType = detail::uncvref_t<ValueTypeCV>>
-#if defined(JSON_HAS_CPP_14)
-    constexpr
-#endif
-    auto get() const noexcept(
-    noexcept(std::declval<const basic_json_t&>().template get_impl<ValueType>(detail::priority_tag<4> {})))
-    -> decltype(std::declval<const basic_json_t&>().template get_impl<ValueType>(detail::priority_tag<4> {}))
-    {
-        // we cannot static_assert on ValueTypeCV being non-const, because
-        // there is support for get<const basic_json_t>(), which is why we
-        // still need the uncvref
-        static_assert(!std::is_reference<ValueTypeCV>::value,
-                      "get() cannot be used with reference types, you might want to use get_ref()");
-        return get_impl<ValueType>(detail::priority_tag<4> {});
-    }
-
-    /*!
-    @brief get a pointer value (explicit)
-
-    Explicit pointer access to the internally stored JSON value. No copies are
-    made.
-
-    @warning The pointer becomes invalid if the underlying JSON object
-    changes.
-
-    @tparam PointerType pointer type; must be a pointer to @ref array_t, @ref
-    object_t, @ref string_t, @ref boolean_t, @ref number_integer_t,
-    @ref number_unsigned_t, or @ref number_float_t.
-
-    @return pointer to the internally stored JSON value if the requested
-    pointer type @a PointerType fits to the JSON value; `nullptr` otherwise
-
-    @complexity Constant.
-
-    @liveexample{The example below shows how pointers to internal values of a
-    JSON value can be requested. Note that no type conversions are made and a
-    `nullptr` is returned if the value and the requested pointer type does not
-    match.,get__PointerType}
-
-    @sa see @ref get_ptr() for explicit pointer-member access
-
-    @since version 1.0.0
-    */
-    template<typename PointerType, typename std::enable_if<
-                 std::is_pointer<PointerType>::value, int>::type = 0>
-    auto get() noexcept -> decltype(std::declval<basic_json_t&>().template get_ptr<PointerType>())
-    {
-        // delegate the call to get_ptr
-        return get_ptr<PointerType>();
-    }
-
-    /// @brief get a value (explicit)
-    /// @sa https://json.nlohmann.me/api/basic_json/get_to/
-    template < typename ValueType,
-               detail::enable_if_t <
-                   !detail::is_basic_json<ValueType>::value&&
-                   detail::has_from_json<basic_json_t, ValueType>::value,
-                   int > = 0 >
-    ValueType & get_to(ValueType& v) const noexcept(noexcept(
-                JSONSerializer<ValueType>::from_json(std::declval<const basic_json_t&>(), v)))
-    {
-        JSONSerializer<ValueType>::from_json(*this, v);
-        return v;
-    }
-
-    // specialization to allow calling get_to with a basic_json value
-    // see https://github.com/nlohmann/json/issues/2175
-    template<typename ValueType,
-             detail::enable_if_t <
-                 detail::is_basic_json<ValueType>::value,
-                 int> = 0>
-    ValueType & get_to(ValueType& v) const
-    {
-        v = *this;
-        return v;
-    }
-
-    template <
-        typename T, std::size_t N,
-        typename Array = T (&)[N], // NOLINT(cppcoreguidelines-avoid-c-arrays,hicpp-avoid-c-arrays,modernize-avoid-c-arrays)
-        detail::enable_if_t <
-            detail::has_from_json<basic_json_t, Array>::value, int > = 0 >
-    Array get_to(T (&v)[N]) const // NOLINT(cppcoreguidelines-avoid-c-arrays,hicpp-avoid-c-arrays,modernize-avoid-c-arrays)
-    noexcept(noexcept(JSONSerializer<Array>::from_json(
-                          std::declval<const basic_json_t&>(), v)))
-    {
-        JSONSerializer<Array>::from_json(*this, v);
-        return v;
-    }
-
-    /// @brief get a reference value (implicit)
-    /// @sa https://json.nlohmann.me/api/basic_json/get_ref/
-    template<typename ReferenceType, typename std::enable_if<
-                 std::is_reference<ReferenceType>::value, int>::type = 0>
-    ReferenceType get_ref()
-    {
-        // delegate call to get_ref_impl
-        return get_ref_impl<ReferenceType>(*this);
-    }
-
-    /// @brief get a reference value (implicit)
-    /// @sa https://json.nlohmann.me/api/basic_json/get_ref/
-    template < typename ReferenceType, typename std::enable_if <
-                   std::is_reference<ReferenceType>::value&&
-                   std::is_const<typename std::remove_reference<ReferenceType>::type>::value, int >::type = 0 >
-    ReferenceType get_ref() const
-    {
-        // delegate call to get_ref_impl
-        return get_ref_impl<ReferenceType>(*this);
-    }
-
-    /*!
-    @brief get a value (implicit)
-
-    Implicit type conversion between the JSON value and a compatible value.
-    The call is realized by calling @ref get() const.
-
-    @tparam ValueType non-pointer type compatible to the JSON value, for
-    instance `int` for JSON integer numbers, `bool` for JSON booleans, or
-    `std::vector` types for JSON arrays. The character type of @ref string_t
-    as well as an initializer list of this type is excluded to avoid
-    ambiguities as these types implicitly convert to `std::string`.
-
-    @return copy of the JSON value, converted to type @a ValueType
-
-    @throw type_error.302 in case passed type @a ValueType is incompatible
-    to the JSON value type (e.g., the JSON value is of type boolean, but a
-    string is requested); see example below
-
-    @complexity Linear in the size of the JSON value.
-
-    @liveexample{The example below shows several conversions from JSON values
-    to other types. There a few things to note: (1) Floating-point numbers can
-    be converted to integers\, (2) A JSON array can be converted to a standard
-    `std::vector<short>`\, (3) A JSON object can be converted to C++
-    associative containers such as `std::unordered_map<std::string\,
-    json>`.,operator__ValueType}
-
-    @since version 1.0.0
-    */
-    template < typename ValueType, typename std::enable_if <
-                   detail::conjunction <
-                       detail::negation<std::is_pointer<ValueType>>,
-                       detail::negation<std::is_same<ValueType, std::nullptr_t>>,
-                       detail::negation<std::is_same<ValueType, detail::json_ref<basic_json>>>,
-                                        detail::negation<std::is_same<ValueType, typename string_t::value_type>>,
-                                        detail::negation<detail::is_basic_json<ValueType>>,
-                                        detail::negation<std::is_same<ValueType, std::initializer_list<typename string_t::value_type>>>,
-#if defined(JSON_HAS_CPP_17) && (defined(__GNUC__) || (defined(_MSC_VER) && _MSC_VER >= 1910 && _MSC_VER <= 1914))
-                                                detail::negation<std::is_same<ValueType, std::string_view>>,
-#endif
-#if defined(JSON_HAS_CPP_17)
-                                                detail::negation<std::is_same<ValueType, std::any>>,
-#endif
-                                                detail::is_detected_lazy<detail::get_template_function, const basic_json_t&, ValueType>
-                                                >::value, int >::type = 0 >
-                                        JSON_EXPLICIT operator ValueType() const
-    {
-        // delegate the call to get<>() const
-        return get<ValueType>();
-    }
-
-    /// @brief get a binary value
-    /// @sa https://json.nlohmann.me/api/basic_json/get_binary/
-    binary_t& get_binary()
-    {
-        if (!is_binary())
-        {
-            JSON_THROW(type_error::create(302, detail::concat("type must be binary, but is ", type_name()), this));
-        }
-
-        return *get_ptr<binary_t*>();
-    }
-
-    /// @brief get a binary value
-    /// @sa https://json.nlohmann.me/api/basic_json/get_binary/
-    const binary_t& get_binary() const
-    {
-        if (!is_binary())
-        {
-            JSON_THROW(type_error::create(302, detail::concat("type must be binary, but is ", type_name()), this));
-        }
-
-        return *get_ptr<const binary_t*>();
-    }
-
-    /// @}
-
-
-    ////////////////////
-    // element access //
-    ////////////////////
-
-    /// @name element access
-    /// Access to the JSON value.
-    /// @{
-
-    /// @brief access specified array element with bounds checking
-    /// @sa https://json.nlohmann.me/api/basic_json/at/
-    reference at(size_type idx)
-    {
-        // at only works for arrays
-        if (JSON_HEDLEY_LIKELY(is_array()))
-        {
-            JSON_TRY
-            {
-                return set_parent(m_data.m_value.array->at(idx));
-            }
-            JSON_CATCH (std::out_of_range&)
-            {
-                // create better exception explanation
-                JSON_THROW(out_of_range::create(401, detail::concat("array index ", std::to_string(idx), " is out of range"), this));
-            }
-        }
-        else
-        {
-            JSON_THROW(type_error::create(304, detail::concat("cannot use at() with ", type_name()), this));
-        }
-    }
-
-    /// @brief access specified array element with bounds checking
-    /// @sa https://json.nlohmann.me/api/basic_json/at/
-    const_reference at(size_type idx) const
-    {
-        // at only works for arrays
-        if (JSON_HEDLEY_LIKELY(is_array()))
-        {
-            JSON_TRY
-            {
-                return m_data.m_value.array->at(idx);
-            }
-            JSON_CATCH (std::out_of_range&)
-            {
-                // create better exception explanation
-                JSON_THROW(out_of_range::create(401, detail::concat("array index ", std::to_string(idx), " is out of range"), this));
-            }
-        }
-        else
-        {
-            JSON_THROW(type_error::create(304, detail::concat("cannot use at() with ", type_name()), this));
-        }
-    }
-
-    /// @brief access specified object element with bounds checking
-    /// @sa https://json.nlohmann.me/api/basic_json/at/
-    reference at(const typename object_t::key_type& key)
-    {
-        // at only works for objects
-        if (JSON_HEDLEY_UNLIKELY(!is_object()))
-        {
-            JSON_THROW(type_error::create(304, detail::concat("cannot use at() with ", type_name()), this));
-        }
-
-        auto it = m_data.m_value.object->find(key);
-        if (it == m_data.m_value.object->end())
-        {
-            JSON_THROW(out_of_range::create(403, detail::concat("key '", key, "' not found"), this));
-        }
-        return set_parent(it->second);
-    }
-
-    /// @brief access specified object element with bounds checking
-    /// @sa https://json.nlohmann.me/api/basic_json/at/
-    template<class KeyType, detail::enable_if_t<
-                 detail::is_usable_as_basic_json_key_type<basic_json_t, KeyType>::value, int> = 0>
-    reference at(KeyType && key)
-    {
-        // at only works for objects
-        if (JSON_HEDLEY_UNLIKELY(!is_object()))
-        {
-            JSON_THROW(type_error::create(304, detail::concat("cannot use at() with ", type_name()), this));
-        }
-
-        auto it = m_data.m_value.object->find(std::forward<KeyType>(key));
-        if (it == m_data.m_value.object->end())
-        {
-            JSON_THROW(out_of_range::create(403, detail::concat("key '", string_t(std::forward<KeyType>(key)), "' not found"), this));
-        }
-        return set_parent(it->second);
-    }
-
-    /// @brief access specified object element with bounds checking
-    /// @sa https://json.nlohmann.me/api/basic_json/at/
-    const_reference at(const typename object_t::key_type& key) const
-    {
-        // at only works for objects
-        if (JSON_HEDLEY_UNLIKELY(!is_object()))
-        {
-            JSON_THROW(type_error::create(304, detail::concat("cannot use at() with ", type_name()), this));
-        }
-
-        auto it = m_data.m_value.object->find(key);
-        if (it == m_data.m_value.object->end())
-        {
-            JSON_THROW(out_of_range::create(403, detail::concat("key '", key, "' not found"), this));
-        }
-        return it->second;
-    }
-
-    /// @brief access specified object element with bounds checking
-    /// @sa https://json.nlohmann.me/api/basic_json/at/
-    template<class KeyType, detail::enable_if_t<
-                 detail::is_usable_as_basic_json_key_type<basic_json_t, KeyType>::value, int> = 0>
-    const_reference at(KeyType && key) const
-    {
-        // at only works for objects
-        if (JSON_HEDLEY_UNLIKELY(!is_object()))
-        {
-            JSON_THROW(type_error::create(304, detail::concat("cannot use at() with ", type_name()), this));
-        }
-
-        auto it = m_data.m_value.object->find(std::forward<KeyType>(key));
-        if (it == m_data.m_value.object->end())
-        {
-            JSON_THROW(out_of_range::create(403, detail::concat("key '", string_t(std::forward<KeyType>(key)), "' not found"), this));
-        }
-        return it->second;
-    }
-
-    /// @brief access specified array element
-    /// @sa https://json.nlohmann.me/api/basic_json/operator%5B%5D/
-    reference operator[](size_type idx)
-    {
-        // implicitly convert null value to an empty array
-        if (is_null())
-        {
-            m_data.m_type = value_t::array;
-            m_data.m_value.array = create<array_t>();
-            assert_invariant();
-        }
-
-        // operator[] only works for arrays
-        if (JSON_HEDLEY_LIKELY(is_array()))
-        {
-            // fill up array with null values if given idx is outside range
-            if (idx >= m_data.m_value.array->size())
-            {
-#if JSON_DIAGNOSTICS
-                // remember array size & capacity before resizing
-                const auto old_size = m_data.m_value.array->size();
-                const auto old_capacity = m_data.m_value.array->capacity();
-#endif
-                m_data.m_value.array->resize(idx + 1);
-
-#if JSON_DIAGNOSTICS
-                if (JSON_HEDLEY_UNLIKELY(m_data.m_value.array->capacity() != old_capacity))
-                {
-                    // capacity has changed: update all parents
-                    set_parents();
-                }
-                else
-                {
-                    // set parent for values added above
-                    set_parents(begin() + static_cast<typename iterator::difference_type>(old_size), static_cast<typename iterator::difference_type>(idx + 1 - old_size));
-                }
-#endif
-                assert_invariant();
-            }
-
-            return m_data.m_value.array->operator[](idx);
-        }
-
-        JSON_THROW(type_error::create(305, detail::concat("cannot use operator[] with a numeric argument with ", type_name()), this));
-    }
-
-    /// @brief access specified array element
-    /// @sa https://json.nlohmann.me/api/basic_json/operator%5B%5D/
-    const_reference operator[](size_type idx) const
-    {
-        // const operator[] only works for arrays
-        if (JSON_HEDLEY_LIKELY(is_array()))
-        {
-            return m_data.m_value.array->operator[](idx);
-        }
-
-        JSON_THROW(type_error::create(305, detail::concat("cannot use operator[] with a numeric argument with ", type_name()), this));
-    }
-
-    /// @brief access specified object element
-    /// @sa https://json.nlohmann.me/api/basic_json/operator%5B%5D/
-    reference operator[](typename object_t::key_type key)
-    {
-        // implicitly convert null value to an empty object
-        if (is_null())
-        {
-            m_data.m_type = value_t::object;
-            m_data.m_value.object = create<object_t>();
-            assert_invariant();
-        }
-
-        // operator[] only works for objects
-        if (JSON_HEDLEY_LIKELY(is_object()))
-        {
-            auto result = m_data.m_value.object->emplace(std::move(key), nullptr);
-            return set_parent(result.first->second);
-        }
-
-        JSON_THROW(type_error::create(305, detail::concat("cannot use operator[] with a string argument with ", type_name()), this));
-    }
-
-    /// @brief access specified object element
-    /// @sa https://json.nlohmann.me/api/basic_json/operator%5B%5D/
-    const_reference operator[](const typename object_t::key_type& key) const
-    {
-        // const operator[] only works for objects
-        if (JSON_HEDLEY_LIKELY(is_object()))
-        {
-            auto it = m_data.m_value.object->find(key);
-            JSON_ASSERT(it != m_data.m_value.object->end());
-            return it->second;
-        }
-
-        JSON_THROW(type_error::create(305, detail::concat("cannot use operator[] with a string argument with ", type_name()), this));
-    }
-
-    // these two functions resolve a (const) char * ambiguity affecting Clang and MSVC
-    // (they seemingly cannot be constrained to resolve the ambiguity)
-    template<typename T>
-    reference operator[](T* key)
-    {
-        return operator[](typename object_t::key_type(key));
-    }
-
-    template<typename T>
-    const_reference operator[](T* key) const
-    {
-        return operator[](typename object_t::key_type(key));
-    }
-
-    /// @brief access specified object element
-    /// @sa https://json.nlohmann.me/api/basic_json/operator%5B%5D/
-    template<class KeyType, detail::enable_if_t<
-                 detail::is_usable_as_basic_json_key_type<basic_json_t, KeyType>::value, int > = 0 >
-    reference operator[](KeyType && key)
-    {
-        // implicitly convert null value to an empty object
-        if (is_null())
-        {
-            m_data.m_type = value_t::object;
-            m_data.m_value.object = create<object_t>();
-            assert_invariant();
-        }
-
-        // operator[] only works for objects
-        if (JSON_HEDLEY_LIKELY(is_object()))
-        {
-            auto result = m_data.m_value.object->emplace(std::forward<KeyType>(key), nullptr);
-            return set_parent(result.first->second);
-        }
-
-        JSON_THROW(type_error::create(305, detail::concat("cannot use operator[] with a string argument with ", type_name()), this));
-    }
-
-    /// @brief access specified object element
-    /// @sa https://json.nlohmann.me/api/basic_json/operator%5B%5D/
-    template<class KeyType, detail::enable_if_t<
-                 detail::is_usable_as_basic_json_key_type<basic_json_t, KeyType>::value, int > = 0 >
-    const_reference operator[](KeyType && key) const
-    {
-        // const operator[] only works for objects
-        if (JSON_HEDLEY_LIKELY(is_object()))
-        {
-            auto it = m_data.m_value.object->find(std::forward<KeyType>(key));
-            JSON_ASSERT(it != m_data.m_value.object->end());
-            return it->second;
-        }
-
-        JSON_THROW(type_error::create(305, detail::concat("cannot use operator[] with a string argument with ", type_name()), this));
-    }
-
-  private:
-    template<typename KeyType>
-    using is_comparable_with_object_key = detail::is_comparable <
-        object_comparator_t, const typename object_t::key_type&, KeyType >;
-
-    template<typename ValueType>
-    using value_return_type = std::conditional <
-        detail::is_c_string_uncvref<ValueType>::value,
-        string_t, typename std::decay<ValueType>::type >;
-
-  public:
-    /// @brief access specified object element with default value
-    /// @sa https://json.nlohmann.me/api/basic_json/value/
-    template < class ValueType, detail::enable_if_t <
-                   !detail::is_transparent<object_comparator_t>::value
-                   && detail::is_getable<basic_json_t, ValueType>::value
-                   && !std::is_same<value_t, detail::uncvref_t<ValueType>>::value, int > = 0 >
-    ValueType value(const typename object_t::key_type& key, const ValueType& default_value) const
-    {
-        // value only works for objects
-        if (JSON_HEDLEY_LIKELY(is_object()))
-        {
-            // if key is found, return value and given default value otherwise
-            const auto it = find(key);
-            if (it != end())
-            {
-                return it->template get<ValueType>();
-            }
-
-            return default_value;
-        }
-
-        JSON_THROW(type_error::create(306, detail::concat("cannot use value() with ", type_name()), this));
-    }
-
-    /// @brief access specified object element with default value
-    /// @sa https://json.nlohmann.me/api/basic_json/value/
-    template < class ValueType, class ReturnType = typename value_return_type<ValueType>::type,
-               detail::enable_if_t <
-                   !detail::is_transparent<object_comparator_t>::value
-                   && detail::is_getable<basic_json_t, ReturnType>::value
-                   && !std::is_same<value_t, detail::uncvref_t<ValueType>>::value, int > = 0 >
-    ReturnType value(const typename object_t::key_type& key, ValueType && default_value) const
-    {
-        // value only works for objects
-        if (JSON_HEDLEY_LIKELY(is_object()))
-        {
-            // if key is found, return value and given default value otherwise
-            const auto it = find(key);
-            if (it != end())
-            {
-                return it->template get<ReturnType>();
-            }
-
-            return std::forward<ValueType>(default_value);
-        }
-
-        JSON_THROW(type_error::create(306, detail::concat("cannot use value() with ", type_name()), this));
-    }
-
-    /// @brief access specified object element with default value
-    /// @sa https://json.nlohmann.me/api/basic_json/value/
-    template < class ValueType, class KeyType, detail::enable_if_t <
-                   detail::is_transparent<object_comparator_t>::value
-                   && !detail::is_json_pointer<KeyType>::value
-                   && is_comparable_with_object_key<KeyType>::value
-                   && detail::is_getable<basic_json_t, ValueType>::value
-                   && !std::is_same<value_t, detail::uncvref_t<ValueType>>::value, int > = 0 >
-    ValueType value(KeyType && key, const ValueType& default_value) const
-    {
-        // value only works for objects
-        if (JSON_HEDLEY_LIKELY(is_object()))
-        {
-            // if key is found, return value and given default value otherwise
-            const auto it = find(std::forward<KeyType>(key));
-            if (it != end())
-            {
-                return it->template get<ValueType>();
-            }
-
-            return default_value;
-        }
-
-        JSON_THROW(type_error::create(306, detail::concat("cannot use value() with ", type_name()), this));
-    }
-
-    /// @brief access specified object element via JSON Pointer with default value
-    /// @sa https://json.nlohmann.me/api/basic_json/value/
-    template < class ValueType, class KeyType, class ReturnType = typename value_return_type<ValueType>::type,
-               detail::enable_if_t <
-                   detail::is_transparent<object_comparator_t>::value
-                   && !detail::is_json_pointer<KeyType>::value
-                   && is_comparable_with_object_key<KeyType>::value
-                   && detail::is_getable<basic_json_t, ReturnType>::value
-                   && !std::is_same<value_t, detail::uncvref_t<ValueType>>::value, int > = 0 >
-    ReturnType value(KeyType && key, ValueType && default_value) const
-    {
-        // value only works for objects
-        if (JSON_HEDLEY_LIKELY(is_object()))
-        {
-            // if key is found, return value and given default value otherwise
-            const auto it = find(std::forward<KeyType>(key));
-            if (it != end())
-            {
-                return it->template get<ReturnType>();
-            }
-
-            return std::forward<ValueType>(default_value);
-        }
-
-        JSON_THROW(type_error::create(306, detail::concat("cannot use value() with ", type_name()), this));
-    }
-
-    /// @brief access specified object element via JSON Pointer with default value
-    /// @sa https://json.nlohmann.me/api/basic_json/value/
-    template < class ValueType, detail::enable_if_t <
-                   detail::is_getable<basic_json_t, ValueType>::value
-                   && !std::is_same<value_t, detail::uncvref_t<ValueType>>::value, int > = 0 >
-    ValueType value(const json_pointer& ptr, const ValueType& default_value) const
-    {
-        // value only works for objects
-        if (JSON_HEDLEY_LIKELY(is_object()))
-        {
-            // if pointer resolves a value, return it or use default value
-            JSON_TRY
-            {
-                return ptr.get_checked(this).template get<ValueType>();
-            }
-            JSON_INTERNAL_CATCH (out_of_range&)
-            {
-                return default_value;
-            }
-        }
-
-        JSON_THROW(type_error::create(306, detail::concat("cannot use value() with ", type_name()), this));
-    }
-
-    /// @brief access specified object element via JSON Pointer with default value
-    /// @sa https://json.nlohmann.me/api/basic_json/value/
-    template < class ValueType, class ReturnType = typename value_return_type<ValueType>::type,
-               detail::enable_if_t <
-                   detail::is_getable<basic_json_t, ReturnType>::value
-                   && !std::is_same<value_t, detail::uncvref_t<ValueType>>::value, int > = 0 >
-    ReturnType value(const json_pointer& ptr, ValueType && default_value) const
-    {
-        // value only works for objects
-        if (JSON_HEDLEY_LIKELY(is_object()))
-        {
-            // if pointer resolves a value, return it or use default value
-            JSON_TRY
-            {
-                return ptr.get_checked(this).template get<ReturnType>();
-            }
-            JSON_INTERNAL_CATCH (out_of_range&)
-            {
-                return std::forward<ValueType>(default_value);
-            }
-        }
-
-        JSON_THROW(type_error::create(306, detail::concat("cannot use value() with ", type_name()), this));
-    }
-
-    template < class ValueType, class BasicJsonType, detail::enable_if_t <
-                   detail::is_basic_json<BasicJsonType>::value
-                   && detail::is_getable<basic_json_t, ValueType>::value
-                   && !std::is_same<value_t, detail::uncvref_t<ValueType>>::value, int > = 0 >
-    JSON_HEDLEY_DEPRECATED_FOR(3.11.0, basic_json::json_pointer or nlohmann::json_pointer<basic_json::string_t>) // NOLINT(readability/alt_tokens)
-    ValueType value(const ::nlohmann::json_pointer<BasicJsonType>& ptr, const ValueType& default_value) const
-    {
-        return value(ptr.convert(), default_value);
-    }
-
-    template < class ValueType, class BasicJsonType, class ReturnType = typename value_return_type<ValueType>::type,
-               detail::enable_if_t <
-                   detail::is_basic_json<BasicJsonType>::value
-                   && detail::is_getable<basic_json_t, ReturnType>::value
-                   && !std::is_same<value_t, detail::uncvref_t<ValueType>>::value, int > = 0 >
-    JSON_HEDLEY_DEPRECATED_FOR(3.11.0, basic_json::json_pointer or nlohmann::json_pointer<basic_json::string_t>) // NOLINT(readability/alt_tokens)
-    ReturnType value(const ::nlohmann::json_pointer<BasicJsonType>& ptr, ValueType && default_value) const
-    {
-        return value(ptr.convert(), std::forward<ValueType>(default_value));
-    }
-
-    /// @brief access the first element
-    /// @sa https://json.nlohmann.me/api/basic_json/front/
-    reference front()
-    {
-        return *begin();
-    }
-
-    /// @brief access the first element
-    /// @sa https://json.nlohmann.me/api/basic_json/front/
-    const_reference front() const
-    {
-        return *cbegin();
-    }
-
-    /// @brief access the last element
-    /// @sa https://json.nlohmann.me/api/basic_json/back/
-    reference back()
-    {
-        auto tmp = end();
-        --tmp;
-        return *tmp;
-    }
-
-    /// @brief access the last element
-    /// @sa https://json.nlohmann.me/api/basic_json/back/
-    const_reference back() const
-    {
-        auto tmp = cend();
-        --tmp;
-        return *tmp;
-    }
-
-    /// @brief remove element given an iterator
-    /// @sa https://json.nlohmann.me/api/basic_json/erase/
-    template < class IteratorType, detail::enable_if_t <
-                   std::is_same<IteratorType, typename basic_json_t::iterator>::value ||
-                   std::is_same<IteratorType, typename basic_json_t::const_iterator>::value, int > = 0 >
-    IteratorType erase(IteratorType pos)
-    {
-        // make sure iterator fits the current value
-        if (JSON_HEDLEY_UNLIKELY(this != pos.m_object))
-        {
-            JSON_THROW(invalid_iterator::create(202, "iterator does not fit current value", this));
-        }
-
-        IteratorType result = end();
-
-        switch (m_data.m_type)
-        {
-            case value_t::boolean:
-            case value_t::number_float:
-            case value_t::number_integer:
-            case value_t::number_unsigned:
-            case value_t::string:
-            case value_t::binary:
-            {
-                if (JSON_HEDLEY_UNLIKELY(!pos.m_it.primitive_iterator.is_begin()))
-                {
-                    JSON_THROW(invalid_iterator::create(205, "iterator out of range", this));
-                }
-
-                if (is_string())
-                {
-                    AllocatorType<string_t> alloc;
-                    std::allocator_traits<decltype(alloc)>::destroy(alloc, m_data.m_value.string);
-                    std::allocator_traits<decltype(alloc)>::deallocate(alloc, m_data.m_value.string, 1);
-                    m_data.m_value.string = nullptr;
-                }
-                else if (is_binary())
-                {
-                    AllocatorType<binary_t> alloc;
-                    std::allocator_traits<decltype(alloc)>::destroy(alloc, m_data.m_value.binary);
-                    std::allocator_traits<decltype(alloc)>::deallocate(alloc, m_data.m_value.binary, 1);
-                    m_data.m_value.binary = nullptr;
-                }
-
-                m_data.m_type = value_t::null;
-                assert_invariant();
-                break;
-            }
-
-            case value_t::object:
-            {
-                result.m_it.object_iterator = m_data.m_value.object->erase(pos.m_it.object_iterator);
-                break;
-            }
-
-            case value_t::array:
-            {
-                result.m_it.array_iterator = m_data.m_value.array->erase(pos.m_it.array_iterator);
-                break;
-            }
-
-            case value_t::null:
-            case value_t::discarded:
-            default:
-                JSON_THROW(type_error::create(307, detail::concat("cannot use erase() with ", type_name()), this));
-        }
-
-        return result;
-    }
-
-    /// @brief remove elements given an iterator range
-    /// @sa https://json.nlohmann.me/api/basic_json/erase/
-    template < class IteratorType, detail::enable_if_t <
-                   std::is_same<IteratorType, typename basic_json_t::iterator>::value ||
-                   std::is_same<IteratorType, typename basic_json_t::const_iterator>::value, int > = 0 >
-    IteratorType erase(IteratorType first, IteratorType last)
-    {
-        // make sure iterator fits the current value
-        if (JSON_HEDLEY_UNLIKELY(this != first.m_object || this != last.m_object))
-        {
-            JSON_THROW(invalid_iterator::create(203, "iterators do not fit current value", this));
-        }
-
-        IteratorType result = end();
-
-        switch (m_data.m_type)
-        {
-            case value_t::boolean:
-            case value_t::number_float:
-            case value_t::number_integer:
-            case value_t::number_unsigned:
-            case value_t::string:
-            case value_t::binary:
-            {
-                if (JSON_HEDLEY_LIKELY(!first.m_it.primitive_iterator.is_begin()
-                                       || !last.m_it.primitive_iterator.is_end()))
-                {
-                    JSON_THROW(invalid_iterator::create(204, "iterators out of range", this));
-                }
-
-                if (is_string())
-                {
-                    AllocatorType<string_t> alloc;
-                    std::allocator_traits<decltype(alloc)>::destroy(alloc, m_data.m_value.string);
-                    std::allocator_traits<decltype(alloc)>::deallocate(alloc, m_data.m_value.string, 1);
-                    m_data.m_value.string = nullptr;
-                }
-                else if (is_binary())
-                {
-                    AllocatorType<binary_t> alloc;
-                    std::allocator_traits<decltype(alloc)>::destroy(alloc, m_data.m_value.binary);
-                    std::allocator_traits<decltype(alloc)>::deallocate(alloc, m_data.m_value.binary, 1);
-                    m_data.m_value.binary = nullptr;
-                }
-
-                m_data.m_type = value_t::null;
-                assert_invariant();
-                break;
-            }
-
-            case value_t::object:
-            {
-                result.m_it.object_iterator = m_data.m_value.object->erase(first.m_it.object_iterator,
-                                              last.m_it.object_iterator);
-                break;
-            }
-
-            case value_t::array:
-            {
-                result.m_it.array_iterator = m_data.m_value.array->erase(first.m_it.array_iterator,
-                                             last.m_it.array_iterator);
-                break;
-            }
-
-            case value_t::null:
-            case value_t::discarded:
-            default:
-                JSON_THROW(type_error::create(307, detail::concat("cannot use erase() with ", type_name()), this));
-        }
-
-        return result;
-    }
-
-  private:
-    template < typename KeyType, detail::enable_if_t <
-                   detail::has_erase_with_key_type<basic_json_t, KeyType>::value, int > = 0 >
-    size_type erase_internal(KeyType && key)
-    {
-        // this erase only works for objects
-        if (JSON_HEDLEY_UNLIKELY(!is_object()))
-        {
-            JSON_THROW(type_error::create(307, detail::concat("cannot use erase() with ", type_name()), this));
-        }
-
-        return m_data.m_value.object->erase(std::forward<KeyType>(key));
-    }
-
-    template < typename KeyType, detail::enable_if_t <
-                   !detail::has_erase_with_key_type<basic_json_t, KeyType>::value, int > = 0 >
-    size_type erase_internal(KeyType && key)
-    {
-        // this erase only works for objects
-        if (JSON_HEDLEY_UNLIKELY(!is_object()))
-        {
-            JSON_THROW(type_error::create(307, detail::concat("cannot use erase() with ", type_name()), this));
-        }
-
-        const auto it = m_data.m_value.object->find(std::forward<KeyType>(key));
-        if (it != m_data.m_value.object->end())
-        {
-            m_data.m_value.object->erase(it);
-            return 1;
-        }
-        return 0;
-    }
-
-  public:
-
-    /// @brief remove element from a JSON object given a key
-    /// @sa https://json.nlohmann.me/api/basic_json/erase/
-    size_type erase(const typename object_t::key_type& key)
-    {
-        // the indirection via erase_internal() is added to avoid making this
-        // function a template and thus de-rank it during overload resolution
-        return erase_internal(key);
-    }
-
-    /// @brief remove element from a JSON object given a key
-    /// @sa https://json.nlohmann.me/api/basic_json/erase/
-    template<class KeyType, detail::enable_if_t<
-                 detail::is_usable_as_basic_json_key_type<basic_json_t, KeyType>::value, int> = 0>
-    size_type erase(KeyType && key)
-    {
-        return erase_internal(std::forward<KeyType>(key));
-    }
-
-    /// @brief remove element from a JSON array given an index
-    /// @sa https://json.nlohmann.me/api/basic_json/erase/
-    void erase(const size_type idx)
-    {
-        // this erase only works for arrays
-        if (JSON_HEDLEY_LIKELY(is_array()))
-        {
-            if (JSON_HEDLEY_UNLIKELY(idx >= size()))
-            {
-                JSON_THROW(out_of_range::create(401, detail::concat("array index ", std::to_string(idx), " is out of range"), this));
-            }
-
-            m_data.m_value.array->erase(m_data.m_value.array->begin() + static_cast<difference_type>(idx));
-        }
-        else
-        {
-            JSON_THROW(type_error::create(307, detail::concat("cannot use erase() with ", type_name()), this));
-        }
-    }
-
-    /// @}
-
-
-    ////////////
-    // lookup //
-    ////////////
-
-    /// @name lookup
-    /// @{
-
-    /// @brief find an element in a JSON object
-    /// @sa https://json.nlohmann.me/api/basic_json/find/
-    iterator find(const typename object_t::key_type& key)
-    {
-        auto result = end();
-
-        if (is_object())
-        {
-            result.m_it.object_iterator = m_data.m_value.object->find(key);
-        }
-
-        return result;
-    }
-
-    /// @brief find an element in a JSON object
-    /// @sa https://json.nlohmann.me/api/basic_json/find/
-    const_iterator find(const typename object_t::key_type& key) const
-    {
-        auto result = cend();
-
-        if (is_object())
-        {
-            result.m_it.object_iterator = m_data.m_value.object->find(key);
-        }
-
-        return result;
-    }
-
-    /// @brief find an element in a JSON object
-    /// @sa https://json.nlohmann.me/api/basic_json/find/
-    template<class KeyType, detail::enable_if_t<
-                 detail::is_usable_as_basic_json_key_type<basic_json_t, KeyType>::value, int> = 0>
-    iterator find(KeyType && key)
-    {
-        auto result = end();
-
-        if (is_object())
-        {
-            result.m_it.object_iterator = m_data.m_value.object->find(std::forward<KeyType>(key));
-        }
-
-        return result;
-    }
-
-    /// @brief find an element in a JSON object
-    /// @sa https://json.nlohmann.me/api/basic_json/find/
-    template<class KeyType, detail::enable_if_t<
-                 detail::is_usable_as_basic_json_key_type<basic_json_t, KeyType>::value, int> = 0>
-    const_iterator find(KeyType && key) const
-    {
-        auto result = cend();
-
-        if (is_object())
-        {
-            result.m_it.object_iterator = m_data.m_value.object->find(std::forward<KeyType>(key));
-        }
-
-        return result;
-    }
-
-    /// @brief returns the number of occurrences of a key in a JSON object
-    /// @sa https://json.nlohmann.me/api/basic_json/count/
-    size_type count(const typename object_t::key_type& key) const
-    {
-        // return 0 for all nonobject types
-        return is_object() ? m_data.m_value.object->count(key) : 0;
-    }
-
-    /// @brief returns the number of occurrences of a key in a JSON object
-    /// @sa https://json.nlohmann.me/api/basic_json/count/
-    template<class KeyType, detail::enable_if_t<
-                 detail::is_usable_as_basic_json_key_type<basic_json_t, KeyType>::value, int> = 0>
-    size_type count(KeyType && key) const
-    {
-        // return 0 for all nonobject types
-        return is_object() ? m_data.m_value.object->count(std::forward<KeyType>(key)) : 0;
-    }
-
-    /// @brief check the existence of an element in a JSON object
-    /// @sa https://json.nlohmann.me/api/basic_json/contains/
-    bool contains(const typename object_t::key_type& key) const
-    {
-        return is_object() && m_data.m_value.object->find(key) != m_data.m_value.object->end();
-    }
-
-    /// @brief check the existence of an element in a JSON object
-    /// @sa https://json.nlohmann.me/api/basic_json/contains/
-    template<class KeyType, detail::enable_if_t<
-                 detail::is_usable_as_basic_json_key_type<basic_json_t, KeyType>::value, int> = 0>
-    bool contains(KeyType && key) const
-    {
-        return is_object() && m_data.m_value.object->find(std::forward<KeyType>(key)) != m_data.m_value.object->end();
-    }
-
-    /// @brief check the existence of an element in a JSON object given a JSON pointer
-    /// @sa https://json.nlohmann.me/api/basic_json/contains/
-    bool contains(const json_pointer& ptr) const
-    {
-        return ptr.contains(this);
-    }
-
-    template<typename BasicJsonType, detail::enable_if_t<detail::is_basic_json<BasicJsonType>::value, int> = 0>
-    JSON_HEDLEY_DEPRECATED_FOR(3.11.0, basic_json::json_pointer or nlohmann::json_pointer<basic_json::string_t>) // NOLINT(readability/alt_tokens)
-    bool contains(const typename ::nlohmann::json_pointer<BasicJsonType>& ptr) const
-    {
-        return ptr.contains(this);
-    }
-
-    /// @}
-
-
-    ///////////////
-    // iterators //
-    ///////////////
-
-    /// @name iterators
-    /// @{
-
-    /// @brief returns an iterator to the first element
-    /// @sa https://json.nlohmann.me/api/basic_json/begin/
-    iterator begin() noexcept
-    {
-        iterator result(this);
-        result.set_begin();
-        return result;
-    }
-
-    /// @brief returns an iterator to the first element
-    /// @sa https://json.nlohmann.me/api/basic_json/begin/
-    const_iterator begin() const noexcept
-    {
-        return cbegin();
-    }
-
-    /// @brief returns a const iterator to the first element
-    /// @sa https://json.nlohmann.me/api/basic_json/cbegin/
-    const_iterator cbegin() const noexcept
-    {
-        const_iterator result(this);
-        result.set_begin();
-        return result;
-    }
-
-    /// @brief returns an iterator to one past the last element
-    /// @sa https://json.nlohmann.me/api/basic_json/end/
-    iterator end() noexcept
-    {
-        iterator result(this);
-        result.set_end();
-        return result;
-    }
-
-    /// @brief returns an iterator to one past the last element
-    /// @sa https://json.nlohmann.me/api/basic_json/end/
-    const_iterator end() const noexcept
-    {
-        return cend();
-    }
-
-    /// @brief returns an iterator to one past the last element
-    /// @sa https://json.nlohmann.me/api/basic_json/cend/
-    const_iterator cend() const noexcept
-    {
-        const_iterator result(this);
-        result.set_end();
-        return result;
-    }
-
-    /// @brief returns an iterator to the reverse-beginning
-    /// @sa https://json.nlohmann.me/api/basic_json/rbegin/
-    reverse_iterator rbegin() noexcept
-    {
-        return reverse_iterator(end());
-    }
-
-    /// @brief returns an iterator to the reverse-beginning
-    /// @sa https://json.nlohmann.me/api/basic_json/rbegin/
-    const_reverse_iterator rbegin() const noexcept
-    {
-        return crbegin();
-    }
-
-    /// @brief returns an iterator to the reverse-end
-    /// @sa https://json.nlohmann.me/api/basic_json/rend/
-    reverse_iterator rend() noexcept
-    {
-        return reverse_iterator(begin());
-    }
-
-    /// @brief returns an iterator to the reverse-end
-    /// @sa https://json.nlohmann.me/api/basic_json/rend/
-    const_reverse_iterator rend() const noexcept
-    {
-        return crend();
-    }
-
-    /// @brief returns a const reverse iterator to the last element
-    /// @sa https://json.nlohmann.me/api/basic_json/crbegin/
-    const_reverse_iterator crbegin() const noexcept
-    {
-        return const_reverse_iterator(cend());
-    }
-
-    /// @brief returns a const reverse iterator to one before the first
-    /// @sa https://json.nlohmann.me/api/basic_json/crend/
-    const_reverse_iterator crend() const noexcept
-    {
-        return const_reverse_iterator(cbegin());
-    }
-
-  public:
-    /// @brief wrapper to access iterator member functions in range-based for
-    /// @sa https://json.nlohmann.me/api/basic_json/items/
-    /// @deprecated This function is deprecated since 3.1.0 and will be removed in
-    ///             version 4.0.0 of the library. Please use @ref items() instead;
-    ///             that is, replace `json::iterator_wrapper(j)` with `j.items()`.
-    JSON_HEDLEY_DEPRECATED_FOR(3.1.0, items())
-    static iteration_proxy<iterator> iterator_wrapper(reference ref) noexcept
-    {
-        return ref.items();
-    }
-
-    /// @brief wrapper to access iterator member functions in range-based for
-    /// @sa https://json.nlohmann.me/api/basic_json/items/
-    /// @deprecated This function is deprecated since 3.1.0 and will be removed in
-    ///         version 4.0.0 of the library. Please use @ref items() instead;
-    ///         that is, replace `json::iterator_wrapper(j)` with `j.items()`.
-    JSON_HEDLEY_DEPRECATED_FOR(3.1.0, items())
-    static iteration_proxy<const_iterator> iterator_wrapper(const_reference ref) noexcept
-    {
-        return ref.items();
-    }
-
-    /// @brief helper to access iterator member functions in range-based for
-    /// @sa https://json.nlohmann.me/api/basic_json/items/
-    iteration_proxy<iterator> items() noexcept
-    {
-        return iteration_proxy<iterator>(*this);
-    }
-
-    /// @brief helper to access iterator member functions in range-based for
-    /// @sa https://json.nlohmann.me/api/basic_json/items/
-    iteration_proxy<const_iterator> items() const noexcept
-    {
-        return iteration_proxy<const_iterator>(*this);
-    }
-
-    /// @}
-
-
-    //////////////
-    // capacity //
-    //////////////
-
-    /// @name capacity
-    /// @{
-
-    /// @brief checks whether the container is empty.
-    /// @sa https://json.nlohmann.me/api/basic_json/empty/
-    bool empty() const noexcept
-    {
-        switch (m_data.m_type)
-        {
-            case value_t::null:
-            {
-                // null values are empty
-                return true;
-            }
-
-            case value_t::array:
-            {
-                // delegate call to array_t::empty()
-                return m_data.m_value.array->empty();
-            }
-
-            case value_t::object:
-            {
-                // delegate call to object_t::empty()
-                return m_data.m_value.object->empty();
-            }
-
-            case value_t::string:
-            case value_t::boolean:
-            case value_t::number_integer:
-            case value_t::number_unsigned:
-            case value_t::number_float:
-            case value_t::binary:
-            case value_t::discarded:
-            default:
-            {
-                // all other types are nonempty
-                return false;
-            }
-        }
-    }
-
-    /// @brief returns the number of elements
-    /// @sa https://json.nlohmann.me/api/basic_json/size/
-    size_type size() const noexcept
-    {
-        switch (m_data.m_type)
-        {
-            case value_t::null:
-            {
-                // null values are empty
-                return 0;
-            }
-
-            case value_t::array:
-            {
-                // delegate call to array_t::size()
-                return m_data.m_value.array->size();
-            }
-
-            case value_t::object:
-            {
-                // delegate call to object_t::size()
-                return m_data.m_value.object->size();
-            }
-
-            case value_t::string:
-            case value_t::boolean:
-            case value_t::number_integer:
-            case value_t::number_unsigned:
-            case value_t::number_float:
-            case value_t::binary:
-            case value_t::discarded:
-            default:
-            {
-                // all other types have size 1
-                return 1;
-            }
-        }
-    }
-
-    /// @brief returns the maximum possible number of elements
-    /// @sa https://json.nlohmann.me/api/basic_json/max_size/
-    size_type max_size() const noexcept
-    {
-        switch (m_data.m_type)
-        {
-            case value_t::array:
-            {
-                // delegate call to array_t::max_size()
-                return m_data.m_value.array->max_size();
-            }
-
-            case value_t::object:
-            {
-                // delegate call to object_t::max_size()
-                return m_data.m_value.object->max_size();
-            }
-
-            case value_t::null:
-            case value_t::string:
-            case value_t::boolean:
-            case value_t::number_integer:
-            case value_t::number_unsigned:
-            case value_t::number_float:
-            case value_t::binary:
-            case value_t::discarded:
-            default:
-            {
-                // all other types have max_size() == size()
-                return size();
-            }
-        }
-    }
-
-    /// @}
-
-
-    ///////////////
-    // modifiers //
-    ///////////////
-
-    /// @name modifiers
-    /// @{
-
-    /// @brief clears the contents
-    /// @sa https://json.nlohmann.me/api/basic_json/clear/
-    void clear() noexcept
-    {
-        switch (m_data.m_type)
-        {
-            case value_t::number_integer:
-            {
-                m_data.m_value.number_integer = 0;
-                break;
-            }
-
-            case value_t::number_unsigned:
-            {
-                m_data.m_value.number_unsigned = 0;
-                break;
-            }
-
-            case value_t::number_float:
-            {
-                m_data.m_value.number_float = 0.0;
-                break;
-            }
-
-            case value_t::boolean:
-            {
-                m_data.m_value.boolean = false;
-                break;
-            }
-
-            case value_t::string:
-            {
-                m_data.m_value.string->clear();
-                break;
-            }
-
-            case value_t::binary:
-            {
-                m_data.m_value.binary->clear();
-                break;
-            }
-
-            case value_t::array:
-            {
-                m_data.m_value.array->clear();
-                break;
-            }
-
-            case value_t::object:
-            {
-                m_data.m_value.object->clear();
-                break;
-            }
-
-            case value_t::null:
-            case value_t::discarded:
-            default:
-                break;
-        }
-    }
-
-    /// @brief add an object to an array
-    /// @sa https://json.nlohmann.me/api/basic_json/push_back/
-    void push_back(basic_json&& val)
-    {
-        // push_back only works for null objects or arrays
-        if (JSON_HEDLEY_UNLIKELY(!(is_null() || is_array())))
-        {
-            JSON_THROW(type_error::create(308, detail::concat("cannot use push_back() with ", type_name()), this));
-        }
-
-        // transform null object into an array
-        if (is_null())
-        {
-            m_data.m_type = value_t::array;
-            m_data.m_value = value_t::array;
-            assert_invariant();
-        }
-
-        // add element to array (move semantics)
-        const auto old_capacity = m_data.m_value.array->capacity();
-        m_data.m_value.array->push_back(std::move(val));
-        set_parent(m_data.m_value.array->back(), old_capacity);
-        // if val is moved from, basic_json move constructor marks it null, so we do not call the destructor
-    }
-
-    /// @brief add an object to an array
-    /// @sa https://json.nlohmann.me/api/basic_json/operator+=/
-    reference operator+=(basic_json&& val)
-    {
-        push_back(std::move(val));
-        return *this;
-    }
-
-    /// @brief add an object to an array
-    /// @sa https://json.nlohmann.me/api/basic_json/push_back/
-    void push_back(const basic_json& val)
-    {
-        // push_back only works for null objects or arrays
-        if (JSON_HEDLEY_UNLIKELY(!(is_null() || is_array())))
-        {
-            JSON_THROW(type_error::create(308, detail::concat("cannot use push_back() with ", type_name()), this));
-        }
-
-        // transform null object into an array
-        if (is_null())
-        {
-            m_data.m_type = value_t::array;
-            m_data.m_value = value_t::array;
-            assert_invariant();
-        }
-
-        // add element to array
-        const auto old_capacity = m_data.m_value.array->capacity();
-        m_data.m_value.array->push_back(val);
-        set_parent(m_data.m_value.array->back(), old_capacity);
-    }
-
-    /// @brief add an object to an array
-    /// @sa https://json.nlohmann.me/api/basic_json/operator+=/
-    reference operator+=(const basic_json& val)
-    {
-        push_back(val);
-        return *this;
-    }
-
-    /// @brief add an object to an object
-    /// @sa https://json.nlohmann.me/api/basic_json/push_back/
-    void push_back(const typename object_t::value_type& val)
-    {
-        // push_back only works for null objects or objects
-        if (JSON_HEDLEY_UNLIKELY(!(is_null() || is_object())))
-        {
-            JSON_THROW(type_error::create(308, detail::concat("cannot use push_back() with ", type_name()), this));
-        }
-
-        // transform null object into an object
-        if (is_null())
-        {
-            m_data.m_type = value_t::object;
-            m_data.m_value = value_t::object;
-            assert_invariant();
-        }
-
-        // add element to object
-        auto res = m_data.m_value.object->insert(val);
-        set_parent(res.first->second);
-    }
-
-    /// @brief add an object to an object
-    /// @sa https://json.nlohmann.me/api/basic_json/operator+=/
-    reference operator+=(const typename object_t::value_type& val)
-    {
-        push_back(val);
-        return *this;
-    }
-
-    /// @brief add an object to an object
-    /// @sa https://json.nlohmann.me/api/basic_json/push_back/
-    void push_back(initializer_list_t init)
-    {
-        if (is_object() && init.size() == 2 && (*init.begin())->is_string())
-        {
-            basic_json&& key = init.begin()->moved_or_copied();
-            push_back(typename object_t::value_type(
-                          std::move(key.get_ref<string_t&>()), (init.begin() + 1)->moved_or_copied()));
-        }
-        else
-        {
-            push_back(basic_json(init));
-        }
-    }
-
-    /// @brief add an object to an object
-    /// @sa https://json.nlohmann.me/api/basic_json/operator+=/
-    reference operator+=(initializer_list_t init)
-    {
-        push_back(init);
-        return *this;
-    }
-
-    /// @brief add an object to an array
-    /// @sa https://json.nlohmann.me/api/basic_json/emplace_back/
-    template<class... Args>
-    reference emplace_back(Args&& ... args)
-    {
-        // emplace_back only works for null objects or arrays
-        if (JSON_HEDLEY_UNLIKELY(!(is_null() || is_array())))
-        {
-            JSON_THROW(type_error::create(311, detail::concat("cannot use emplace_back() with ", type_name()), this));
-        }
-
-        // transform null object into an array
-        if (is_null())
-        {
-            m_data.m_type = value_t::array;
-            m_data.m_value = value_t::array;
-            assert_invariant();
-        }
-
-        // add element to array (perfect forwarding)
-        const auto old_capacity = m_data.m_value.array->capacity();
-        m_data.m_value.array->emplace_back(std::forward<Args>(args)...);
-        return set_parent(m_data.m_value.array->back(), old_capacity);
-    }
-
-    /// @brief add an object to an object if key does not exist
-    /// @sa https://json.nlohmann.me/api/basic_json/emplace/
-    template<class... Args>
-    std::pair<iterator, bool> emplace(Args&& ... args)
-    {
-        // emplace only works for null objects or arrays
-        if (JSON_HEDLEY_UNLIKELY(!(is_null() || is_object())))
-        {
-            JSON_THROW(type_error::create(311, detail::concat("cannot use emplace() with ", type_name()), this));
-        }
-
-        // transform null object into an object
-        if (is_null())
-        {
-            m_data.m_type = value_t::object;
-            m_data.m_value = value_t::object;
-            assert_invariant();
-        }
-
-        // add element to array (perfect forwarding)
-        auto res = m_data.m_value.object->emplace(std::forward<Args>(args)...);
-        set_parent(res.first->second);
-
-        // create result iterator and set iterator to the result of emplace
-        auto it = begin();
-        it.m_it.object_iterator = res.first;
-
-        // return pair of iterator and boolean
-        return {it, res.second};
-    }
-
-    /// Helper for insertion of an iterator
-    /// @note: This uses std::distance to support GCC 4.8,
-    ///        see https://github.com/nlohmann/json/pull/1257
-    template<typename... Args>
-    iterator insert_iterator(const_iterator pos, Args&& ... args)
-    {
-        iterator result(this);
-        JSON_ASSERT(m_data.m_value.array != nullptr);
-
-        auto insert_pos = std::distance(m_data.m_value.array->begin(), pos.m_it.array_iterator);
-        m_data.m_value.array->insert(pos.m_it.array_iterator, std::forward<Args>(args)...);
-        result.m_it.array_iterator = m_data.m_value.array->begin() + insert_pos;
-
-        // This could have been written as:
-        // result.m_it.array_iterator = m_data.m_value.array->insert(pos.m_it.array_iterator, cnt, val);
-        // but the return value of insert is missing in GCC 4.8, so it is written this way instead.
-
-        set_parents();
-        return result;
-    }
-
-    /// @brief inserts element into array
-    /// @sa https://json.nlohmann.me/api/basic_json/insert/
-    iterator insert(const_iterator pos, const basic_json& val)
-    {
-        // insert only works for arrays
-        if (JSON_HEDLEY_LIKELY(is_array()))
-        {
-            // check if iterator pos fits to this JSON value
-            if (JSON_HEDLEY_UNLIKELY(pos.m_object != this))
-            {
-                JSON_THROW(invalid_iterator::create(202, "iterator does not fit current value", this));
-            }
-
-            // insert to array and return iterator
-            return insert_iterator(pos, val);
-        }
-
-        JSON_THROW(type_error::create(309, detail::concat("cannot use insert() with ", type_name()), this));
-    }
-
-    /// @brief inserts element into array
-    /// @sa https://json.nlohmann.me/api/basic_json/insert/
-    iterator insert(const_iterator pos, basic_json&& val)
-    {
-        return insert(pos, val);
-    }
-
-    /// @brief inserts copies of element into array
-    /// @sa https://json.nlohmann.me/api/basic_json/insert/
-    iterator insert(const_iterator pos, size_type cnt, const basic_json& val)
-    {
-        // insert only works for arrays
-        if (JSON_HEDLEY_LIKELY(is_array()))
-        {
-            // check if iterator pos fits to this JSON value
-            if (JSON_HEDLEY_UNLIKELY(pos.m_object != this))
-            {
-                JSON_THROW(invalid_iterator::create(202, "iterator does not fit current value", this));
-            }
-
-            // insert to array and return iterator
-            return insert_iterator(pos, cnt, val);
-        }
-
-        JSON_THROW(type_error::create(309, detail::concat("cannot use insert() with ", type_name()), this));
-    }
-
-    /// @brief inserts range of elements into array
-    /// @sa https://json.nlohmann.me/api/basic_json/insert/
-    iterator insert(const_iterator pos, const_iterator first, const_iterator last)
-    {
-        // insert only works for arrays
-        if (JSON_HEDLEY_UNLIKELY(!is_array()))
-        {
-            JSON_THROW(type_error::create(309, detail::concat("cannot use insert() with ", type_name()), this));
-        }
-
-        // check if iterator pos fits to this JSON value
-        if (JSON_HEDLEY_UNLIKELY(pos.m_object != this))
-        {
-            JSON_THROW(invalid_iterator::create(202, "iterator does not fit current value", this));
-        }
-
-        // check if range iterators belong to the same JSON object
-        if (JSON_HEDLEY_UNLIKELY(first.m_object != last.m_object))
-        {
-            JSON_THROW(invalid_iterator::create(210, "iterators do not fit", this));
-        }
-
-        if (JSON_HEDLEY_UNLIKELY(first.m_object == this))
-        {
-            JSON_THROW(invalid_iterator::create(211, "passed iterators may not belong to container", this));
-        }
-
-        // insert to array and return iterator
-        return insert_iterator(pos, first.m_it.array_iterator, last.m_it.array_iterator);
-    }
-
-    /// @brief inserts elements from initializer list into array
-    /// @sa https://json.nlohmann.me/api/basic_json/insert/
-    iterator insert(const_iterator pos, initializer_list_t ilist)
-    {
-        // insert only works for arrays
-        if (JSON_HEDLEY_UNLIKELY(!is_array()))
-        {
-            JSON_THROW(type_error::create(309, detail::concat("cannot use insert() with ", type_name()), this));
-        }
-
-        // check if iterator pos fits to this JSON value
-        if (JSON_HEDLEY_UNLIKELY(pos.m_object != this))
-        {
-            JSON_THROW(invalid_iterator::create(202, "iterator does not fit current value", this));
-        }
-
-        // insert to array and return iterator
-        return insert_iterator(pos, ilist.begin(), ilist.end());
-    }
-
-    /// @brief inserts range of elements into object
-    /// @sa https://json.nlohmann.me/api/basic_json/insert/
-    void insert(const_iterator first, const_iterator last)
-    {
-        // insert only works for objects
-        if (JSON_HEDLEY_UNLIKELY(!is_object()))
-        {
-            JSON_THROW(type_error::create(309, detail::concat("cannot use insert() with ", type_name()), this));
-        }
-
-        // check if range iterators belong to the same JSON object
-        if (JSON_HEDLEY_UNLIKELY(first.m_object != last.m_object))
-        {
-            JSON_THROW(invalid_iterator::create(210, "iterators do not fit", this));
-        }
-
-        // passed iterators must belong to objects
-        if (JSON_HEDLEY_UNLIKELY(!first.m_object->is_object()))
-        {
-            JSON_THROW(invalid_iterator::create(202, "iterators first and last must point to objects", this));
-        }
-
-        m_data.m_value.object->insert(first.m_it.object_iterator, last.m_it.object_iterator);
-    }
-
-    /// @brief updates a JSON object from another object, overwriting existing keys
-    /// @sa https://json.nlohmann.me/api/basic_json/update/
-    void update(const_reference j, bool merge_objects = false)
-    {
-        update(j.begin(), j.end(), merge_objects);
-    }
-
-    /// @brief updates a JSON object from another object, overwriting existing keys
-    /// @sa https://json.nlohmann.me/api/basic_json/update/
-    void update(const_iterator first, const_iterator last, bool merge_objects = false)
-    {
-        // implicitly convert null value to an empty object
-        if (is_null())
-        {
-            m_data.m_type = value_t::object;
-            m_data.m_value.object = create<object_t>();
-            assert_invariant();
-        }
-
-        if (JSON_HEDLEY_UNLIKELY(!is_object()))
-        {
-            JSON_THROW(type_error::create(312, detail::concat("cannot use update() with ", type_name()), this));
-        }
-
-        // check if range iterators belong to the same JSON object
-        if (JSON_HEDLEY_UNLIKELY(first.m_object != last.m_object))
-        {
-            JSON_THROW(invalid_iterator::create(210, "iterators do not fit", this));
-        }
-
-        // passed iterators must belong to objects
-        if (JSON_HEDLEY_UNLIKELY(!first.m_object->is_object()))
-        {
-            JSON_THROW(type_error::create(312, detail::concat("cannot use update() with ", first.m_object->type_name()), first.m_object));
-        }
-
-        for (auto it = first; it != last; ++it)
-        {
-            if (merge_objects && it.value().is_object())
-            {
-                auto it2 = m_data.m_value.object->find(it.key());
-                if (it2 != m_data.m_value.object->end())
-                {
-                    it2->second.update(it.value(), true);
-                    continue;
-                }
-            }
-            m_data.m_value.object->operator[](it.key()) = it.value();
-#if JSON_DIAGNOSTICS
-            m_data.m_value.object->operator[](it.key()).m_parent = this;
-#endif
-        }
-    }
-
-    /// @brief exchanges the values
-    /// @sa https://json.nlohmann.me/api/basic_json/swap/
-    void swap(reference other) noexcept (
-        std::is_nothrow_move_constructible<value_t>::value&&
-        std::is_nothrow_move_assignable<value_t>::value&&
-        std::is_nothrow_move_constructible<json_value>::value&&
-        std::is_nothrow_move_assignable<json_value>::value
-    )
-    {
-        std::swap(m_data.m_type, other.m_data.m_type);
-        std::swap(m_data.m_value, other.m_data.m_value);
-
-        set_parents();
-        other.set_parents();
-        assert_invariant();
-    }
-
-    /// @brief exchanges the values
-    /// @sa https://json.nlohmann.me/api/basic_json/swap/
-    friend void swap(reference left, reference right) noexcept (
-        std::is_nothrow_move_constructible<value_t>::value&&
-        std::is_nothrow_move_assignable<value_t>::value&&
-        std::is_nothrow_move_constructible<json_value>::value&&
-        std::is_nothrow_move_assignable<json_value>::value
-    )
-    {
-        left.swap(right);
-    }
-
-    /// @brief exchanges the values
-    /// @sa https://json.nlohmann.me/api/basic_json/swap/
-    void swap(array_t& other) // NOLINT(bugprone-exception-escape)
-    {
-        // swap only works for arrays
-        if (JSON_HEDLEY_LIKELY(is_array()))
-        {
-            using std::swap;
-            swap(*(m_data.m_value.array), other);
-        }
-        else
-        {
-            JSON_THROW(type_error::create(310, detail::concat("cannot use swap(array_t&) with ", type_name()), this));
-        }
-    }
-
-    /// @brief exchanges the values
-    /// @sa https://json.nlohmann.me/api/basic_json/swap/
-    void swap(object_t& other) // NOLINT(bugprone-exception-escape)
-    {
-        // swap only works for objects
-        if (JSON_HEDLEY_LIKELY(is_object()))
-        {
-            using std::swap;
-            swap(*(m_data.m_value.object), other);
-        }
-        else
-        {
-            JSON_THROW(type_error::create(310, detail::concat("cannot use swap(object_t&) with ", type_name()), this));
-        }
-    }
-
-    /// @brief exchanges the values
-    /// @sa https://json.nlohmann.me/api/basic_json/swap/
-    void swap(string_t& other) // NOLINT(bugprone-exception-escape)
-    {
-        // swap only works for strings
-        if (JSON_HEDLEY_LIKELY(is_string()))
-        {
-            using std::swap;
-            swap(*(m_data.m_value.string), other);
-        }
-        else
-        {
-            JSON_THROW(type_error::create(310, detail::concat("cannot use swap(string_t&) with ", type_name()), this));
-        }
-    }
-
-    /// @brief exchanges the values
-    /// @sa https://json.nlohmann.me/api/basic_json/swap/
-    void swap(binary_t& other) // NOLINT(bugprone-exception-escape)
-    {
-        // swap only works for strings
-        if (JSON_HEDLEY_LIKELY(is_binary()))
-        {
-            using std::swap;
-            swap(*(m_data.m_value.binary), other);
-        }
-        else
-        {
-            JSON_THROW(type_error::create(310, detail::concat("cannot use swap(binary_t&) with ", type_name()), this));
-        }
-    }
-
-    /// @brief exchanges the values
-    /// @sa https://json.nlohmann.me/api/basic_json/swap/
-    void swap(typename binary_t::container_type& other) // NOLINT(bugprone-exception-escape)
-    {
-        // swap only works for strings
-        if (JSON_HEDLEY_LIKELY(is_binary()))
-        {
-            using std::swap;
-            swap(*(m_data.m_value.binary), other);
-        }
-        else
-        {
-            JSON_THROW(type_error::create(310, detail::concat("cannot use swap(binary_t::container_type&) with ", type_name()), this));
-        }
-    }
-
-    /// @}
-
-    //////////////////////////////////////////
-    // lexicographical comparison operators //
-    //////////////////////////////////////////
-
-    /// @name lexicographical comparison operators
-    /// @{
-
-    // note parentheses around operands are necessary; see
-    // https://github.com/nlohmann/json/issues/1530
-#define JSON_IMPLEMENT_OPERATOR(op, null_result, unordered_result, default_result)                       \
-    const auto lhs_type = lhs.type();                                                                    \
-    const auto rhs_type = rhs.type();                                                                    \
-    \
-    if (lhs_type == rhs_type) /* NOLINT(readability/braces) */                                           \
-    {                                                                                                    \
-        switch (lhs_type)                                                                                \
-        {                                                                                                \
-            case value_t::array:                                                                         \
-                return (*lhs.m_data.m_value.array) op (*rhs.m_data.m_value.array);                                     \
-                \
-            case value_t::object:                                                                        \
-                return (*lhs.m_data.m_value.object) op (*rhs.m_data.m_value.object);                                   \
-                \
-            case value_t::null:                                                                          \
-                return (null_result);                                                                    \
-                \
-            case value_t::string:                                                                        \
-                return (*lhs.m_data.m_value.string) op (*rhs.m_data.m_value.string);                                   \
-                \
-            case value_t::boolean:                                                                       \
-                return (lhs.m_data.m_value.boolean) op (rhs.m_data.m_value.boolean);                                   \
-                \
-            case value_t::number_integer:                                                                \
-                return (lhs.m_data.m_value.number_integer) op (rhs.m_data.m_value.number_integer);                     \
-                \
-            case value_t::number_unsigned:                                                               \
-                return (lhs.m_data.m_value.number_unsigned) op (rhs.m_data.m_value.number_unsigned);                   \
-                \
-            case value_t::number_float:                                                                  \
-                return (lhs.m_data.m_value.number_float) op (rhs.m_data.m_value.number_float);                         \
-                \
-            case value_t::binary:                                                                        \
-                return (*lhs.m_data.m_value.binary) op (*rhs.m_data.m_value.binary);                                   \
-                \
-            case value_t::discarded:                                                                     \
-            default:                                                                                     \
-                return (unordered_result);                                                               \
-        }                                                                                                \
-    }                                                                                                    \
-    else if (lhs_type == value_t::number_integer && rhs_type == value_t::number_float)                   \
-    {                                                                                                    \
-        return static_cast<number_float_t>(lhs.m_data.m_value.number_integer) op rhs.m_data.m_value.number_float;      \
-    }                                                                                                    \
-    else if (lhs_type == value_t::number_float && rhs_type == value_t::number_integer)                   \
-    {                                                                                                    \
-        return lhs.m_data.m_value.number_float op static_cast<number_float_t>(rhs.m_data.m_value.number_integer);      \
-    }                                                                                                    \
-    else if (lhs_type == value_t::number_unsigned && rhs_type == value_t::number_float)                  \
-    {                                                                                                    \
-        return static_cast<number_float_t>(lhs.m_data.m_value.number_unsigned) op rhs.m_data.m_value.number_float;     \
-    }                                                                                                    \
-    else if (lhs_type == value_t::number_float && rhs_type == value_t::number_unsigned)                  \
-    {                                                                                                    \
-        return lhs.m_data.m_value.number_float op static_cast<number_float_t>(rhs.m_data.m_value.number_unsigned);     \
-    }                                                                                                    \
-    else if (lhs_type == value_t::number_unsigned && rhs_type == value_t::number_integer)                \
-    {                                                                                                    \
-        return static_cast<number_integer_t>(lhs.m_data.m_value.number_unsigned) op rhs.m_data.m_value.number_integer; \
-    }                                                                                                    \
-    else if (lhs_type == value_t::number_integer && rhs_type == value_t::number_unsigned)                \
-    {                                                                                                    \
-        return lhs.m_data.m_value.number_integer op static_cast<number_integer_t>(rhs.m_data.m_value.number_unsigned); \
-    }                                                                                                    \
-    else if(compares_unordered(lhs, rhs))\
-    {\
-        return (unordered_result);\
-    }\
-    \
-    return (default_result);
-
-  JSON_PRIVATE_UNLESS_TESTED:
-    // returns true if:
-    // - any operand is NaN and the other operand is of number type
-    // - any operand is discarded
-    // in legacy mode, discarded values are considered ordered if
-    // an operation is computed as an odd number of inverses of others
-    static bool compares_unordered(const_reference lhs, const_reference rhs, bool inverse = false) noexcept
-    {
-        if ((lhs.is_number_float() && std::isnan(lhs.m_data.m_value.number_float) && rhs.is_number())
-                || (rhs.is_number_float() && std::isnan(rhs.m_data.m_value.number_float) && lhs.is_number()))
-        {
-            return true;
-        }
-#if JSON_USE_LEGACY_DISCARDED_VALUE_COMPARISON
-        return (lhs.is_discarded() || rhs.is_discarded()) && !inverse;
-#else
-        static_cast<void>(inverse);
-        return lhs.is_discarded() || rhs.is_discarded();
-#endif
-    }
-
-  private:
-    bool compares_unordered(const_reference rhs, bool inverse = false) const noexcept
-    {
-        return compares_unordered(*this, rhs, inverse);
-    }
-
-  public:
-#if JSON_HAS_THREE_WAY_COMPARISON
-    /// @brief comparison: equal
-    /// @sa https://json.nlohmann.me/api/basic_json/operator_eq/
-    bool operator==(const_reference rhs) const noexcept
-    {
-#ifdef __GNUC__
-#pragma GCC diagnostic push
-#pragma GCC diagnostic ignored "-Wfloat-equal"
-#endif
-        const_reference lhs = *this;
-        JSON_IMPLEMENT_OPERATOR( ==, true, false, false)
-#ifdef __GNUC__
-#pragma GCC diagnostic pop
-#endif
-    }
-
-    /// @brief comparison: equal
-    /// @sa https://json.nlohmann.me/api/basic_json/operator_eq/
-    template<typename ScalarType>
-    requires std::is_scalar_v<ScalarType>
-    bool operator==(ScalarType rhs) const noexcept
-    {
-        return *this == basic_json(rhs);
-    }
-
-    /// @brief comparison: not equal
-    /// @sa https://json.nlohmann.me/api/basic_json/operator_ne/
-    bool operator!=(const_reference rhs) const noexcept
-    {
-        if (compares_unordered(rhs, true))
-        {
-            return false;
-        }
-        return !operator==(rhs);
-    }
-
-    /// @brief comparison: 3-way
-    /// @sa https://json.nlohmann.me/api/basic_json/operator_spaceship/
-    std::partial_ordering operator<=>(const_reference rhs) const noexcept // *NOPAD*
-    {
-        const_reference lhs = *this;
-        // default_result is used if we cannot compare values. In that case,
-        // we compare types.
-        JSON_IMPLEMENT_OPERATOR(<=>, // *NOPAD*
-                                std::partial_ordering::equivalent,
-                                std::partial_ordering::unordered,
-                                lhs_type <=> rhs_type) // *NOPAD*
-    }
-
-    /// @brief comparison: 3-way
-    /// @sa https://json.nlohmann.me/api/basic_json/operator_spaceship/
-    template<typename ScalarType>
-    requires std::is_scalar_v<ScalarType>
-    std::partial_ordering operator<=>(ScalarType rhs) const noexcept // *NOPAD*
-    {
-        return *this <=> basic_json(rhs); // *NOPAD*
-    }
-
-#if JSON_USE_LEGACY_DISCARDED_VALUE_COMPARISON
-    // all operators that are computed as an odd number of inverses of others
-    // need to be overloaded to emulate the legacy comparison behavior
-
-    /// @brief comparison: less than or equal
-    /// @sa https://json.nlohmann.me/api/basic_json/operator_le/
-    JSON_HEDLEY_DEPRECATED_FOR(3.11.0, undef JSON_USE_LEGACY_DISCARDED_VALUE_COMPARISON)
-    bool operator<=(const_reference rhs) const noexcept
-    {
-        if (compares_unordered(rhs, true))
-        {
-            return false;
-        }
-        return !(rhs < *this);
-    }
-
-    /// @brief comparison: less than or equal
-    /// @sa https://json.nlohmann.me/api/basic_json/operator_le/
-    template<typename ScalarType>
-    requires std::is_scalar_v<ScalarType>
-    bool operator<=(ScalarType rhs) const noexcept
-    {
-        return *this <= basic_json(rhs);
-    }
-
-    /// @brief comparison: greater than or equal
-    /// @sa https://json.nlohmann.me/api/basic_json/operator_ge/
-    JSON_HEDLEY_DEPRECATED_FOR(3.11.0, undef JSON_USE_LEGACY_DISCARDED_VALUE_COMPARISON)
-    bool operator>=(const_reference rhs) const noexcept
-    {
-        if (compares_unordered(rhs, true))
-        {
-            return false;
-        }
-        return !(*this < rhs);
-    }
-
-    /// @brief comparison: greater than or equal
-    /// @sa https://json.nlohmann.me/api/basic_json/operator_ge/
-    template<typename ScalarType>
-    requires std::is_scalar_v<ScalarType>
-    bool operator>=(ScalarType rhs) const noexcept
-    {
-        return *this >= basic_json(rhs);
-    }
-#endif
-#else
-    /// @brief comparison: equal
-    /// @sa https://json.nlohmann.me/api/basic_json/operator_eq/
-    friend bool operator==(const_reference lhs, const_reference rhs) noexcept
-    {
-#ifdef __GNUC__
-#pragma GCC diagnostic push
-#pragma GCC diagnostic ignored "-Wfloat-equal"
-#endif
-        JSON_IMPLEMENT_OPERATOR( ==, true, false, false)
-#ifdef __GNUC__
-#pragma GCC diagnostic pop
-#endif
-    }
-
-    /// @brief comparison: equal
-    /// @sa https://json.nlohmann.me/api/basic_json/operator_eq/
-    template<typename ScalarType, typename std::enable_if<
-                 std::is_scalar<ScalarType>::value, int>::type = 0>
-    friend bool operator==(const_reference lhs, ScalarType rhs) noexcept
-    {
-        return lhs == basic_json(rhs);
-    }
-
-    /// @brief comparison: equal
-    /// @sa https://json.nlohmann.me/api/basic_json/operator_eq/
-    template<typename ScalarType, typename std::enable_if<
-                 std::is_scalar<ScalarType>::value, int>::type = 0>
-    friend bool operator==(ScalarType lhs, const_reference rhs) noexcept
-    {
-        return basic_json(lhs) == rhs;
-    }
-
-    /// @brief comparison: not equal
-    /// @sa https://json.nlohmann.me/api/basic_json/operator_ne/
-    friend bool operator!=(const_reference lhs, const_reference rhs) noexcept
-    {
-        if (compares_unordered(lhs, rhs, true))
-        {
-            return false;
-        }
-        return !(lhs == rhs);
-    }
-
-    /// @brief comparison: not equal
-    /// @sa https://json.nlohmann.me/api/basic_json/operator_ne/
-    template<typename ScalarType, typename std::enable_if<
-                 std::is_scalar<ScalarType>::value, int>::type = 0>
-    friend bool operator!=(const_reference lhs, ScalarType rhs) noexcept
-    {
-        return lhs != basic_json(rhs);
-    }
-
-    /// @brief comparison: not equal
-    /// @sa https://json.nlohmann.me/api/basic_json/operator_ne/
-    template<typename ScalarType, typename std::enable_if<
-                 std::is_scalar<ScalarType>::value, int>::type = 0>
-    friend bool operator!=(ScalarType lhs, const_reference rhs) noexcept
-    {
-        return basic_json(lhs) != rhs;
-    }
-
-    /// @brief comparison: less than
-    /// @sa https://json.nlohmann.me/api/basic_json/operator_lt/
-    friend bool operator<(const_reference lhs, const_reference rhs) noexcept
-    {
-        // default_result is used if we cannot compare values. In that case,
-        // we compare types. Note we have to call the operator explicitly,
-        // because MSVC has problems otherwise.
-        JSON_IMPLEMENT_OPERATOR( <, false, false, operator<(lhs_type, rhs_type))
-    }
-
-    /// @brief comparison: less than
-    /// @sa https://json.nlohmann.me/api/basic_json/operator_lt/
-    template<typename ScalarType, typename std::enable_if<
-                 std::is_scalar<ScalarType>::value, int>::type = 0>
-    friend bool operator<(const_reference lhs, ScalarType rhs) noexcept
-    {
-        return lhs < basic_json(rhs);
-    }
-
-    /// @brief comparison: less than
-    /// @sa https://json.nlohmann.me/api/basic_json/operator_lt/
-    template<typename ScalarType, typename std::enable_if<
-                 std::is_scalar<ScalarType>::value, int>::type = 0>
-    friend bool operator<(ScalarType lhs, const_reference rhs) noexcept
-    {
-        return basic_json(lhs) < rhs;
-    }
-
-    /// @brief comparison: less than or equal
-    /// @sa https://json.nlohmann.me/api/basic_json/operator_le/
-    friend bool operator<=(const_reference lhs, const_reference rhs) noexcept
-    {
-        if (compares_unordered(lhs, rhs, true))
-        {
-            return false;
-        }
-        return !(rhs < lhs);
-    }
-
-    /// @brief comparison: less than or equal
-    /// @sa https://json.nlohmann.me/api/basic_json/operator_le/
-    template<typename ScalarType, typename std::enable_if<
-                 std::is_scalar<ScalarType>::value, int>::type = 0>
-    friend bool operator<=(const_reference lhs, ScalarType rhs) noexcept
-    {
-        return lhs <= basic_json(rhs);
-    }
-
-    /// @brief comparison: less than or equal
-    /// @sa https://json.nlohmann.me/api/basic_json/operator_le/
-    template<typename ScalarType, typename std::enable_if<
-                 std::is_scalar<ScalarType>::value, int>::type = 0>
-    friend bool operator<=(ScalarType lhs, const_reference rhs) noexcept
-    {
-        return basic_json(lhs) <= rhs;
-    }
-
-    /// @brief comparison: greater than
-    /// @sa https://json.nlohmann.me/api/basic_json/operator_gt/
-    friend bool operator>(const_reference lhs, const_reference rhs) noexcept
-    {
-        // double inverse
-        if (compares_unordered(lhs, rhs))
-        {
-            return false;
-        }
-        return !(lhs <= rhs);
-    }
-
-    /// @brief comparison: greater than
-    /// @sa https://json.nlohmann.me/api/basic_json/operator_gt/
-    template<typename ScalarType, typename std::enable_if<
-                 std::is_scalar<ScalarType>::value, int>::type = 0>
-    friend bool operator>(const_reference lhs, ScalarType rhs) noexcept
-    {
-        return lhs > basic_json(rhs);
-    }
-
-    /// @brief comparison: greater than
-    /// @sa https://json.nlohmann.me/api/basic_json/operator_gt/
-    template<typename ScalarType, typename std::enable_if<
-                 std::is_scalar<ScalarType>::value, int>::type = 0>
-    friend bool operator>(ScalarType lhs, const_reference rhs) noexcept
-    {
-        return basic_json(lhs) > rhs;
-    }
-
-    /// @brief comparison: greater than or equal
-    /// @sa https://json.nlohmann.me/api/basic_json/operator_ge/
-    friend bool operator>=(const_reference lhs, const_reference rhs) noexcept
-    {
-        if (compares_unordered(lhs, rhs, true))
-        {
-            return false;
-        }
-        return !(lhs < rhs);
-    }
-
-    /// @brief comparison: greater than or equal
-    /// @sa https://json.nlohmann.me/api/basic_json/operator_ge/
-    template<typename ScalarType, typename std::enable_if<
-                 std::is_scalar<ScalarType>::value, int>::type = 0>
-    friend bool operator>=(const_reference lhs, ScalarType rhs) noexcept
-    {
-        return lhs >= basic_json(rhs);
-    }
-
-    /// @brief comparison: greater than or equal
-    /// @sa https://json.nlohmann.me/api/basic_json/operator_ge/
-    template<typename ScalarType, typename std::enable_if<
-                 std::is_scalar<ScalarType>::value, int>::type = 0>
-    friend bool operator>=(ScalarType lhs, const_reference rhs) noexcept
-    {
-        return basic_json(lhs) >= rhs;
-    }
-#endif
-
-#undef JSON_IMPLEMENT_OPERATOR
-
-    /// @}
-
-    ///////////////////
-    // serialization //
-    ///////////////////
-
-    /// @name serialization
-    /// @{
-#ifndef JSON_NO_IO
-    /// @brief serialize to stream
-    /// @sa https://json.nlohmann.me/api/basic_json/operator_ltlt/
-    friend std::ostream& operator<<(std::ostream& o, const basic_json& j)
-    {
-        // read width member and use it as indentation parameter if nonzero
-        const bool pretty_print = o.width() > 0;
-        const auto indentation = pretty_print ? o.width() : 0;
-
-        // reset width to 0 for subsequent calls to this stream
-        o.width(0);
-
-        // do the actual serialization
-        serializer s(detail::output_adapter<char>(o), o.fill());
-        s.dump(j, pretty_print, false, static_cast<unsigned int>(indentation));
-        return o;
-    }
-
-    /// @brief serialize to stream
-    /// @sa https://json.nlohmann.me/api/basic_json/operator_ltlt/
-    /// @deprecated This function is deprecated since 3.0.0 and will be removed in
-    ///             version 4.0.0 of the library. Please use
-    ///             operator<<(std::ostream&, const basic_json&) instead; that is,
-    ///             replace calls like `j >> o;` with `o << j;`.
-    JSON_HEDLEY_DEPRECATED_FOR(3.0.0, operator<<(std::ostream&, const basic_json&))
-    friend std::ostream& operator>>(const basic_json& j, std::ostream& o)
-    {
-        return o << j;
-    }
-#endif  // JSON_NO_IO
-    /// @}
-
-
-    /////////////////////
-    // deserialization //
-    /////////////////////
-
-    /// @name deserialization
-    /// @{
-
-    /// @brief deserialize from a compatible input
-    /// @sa https://json.nlohmann.me/api/basic_json/parse/
-    template<typename InputType>
-    JSON_HEDLEY_WARN_UNUSED_RESULT
-    static basic_json parse(InputType&& i,
-                            const parser_callback_t cb = nullptr,
-                            const bool allow_exceptions = true,
-                            const bool ignore_comments = false)
-    {
-        basic_json result;
-        parser(detail::input_adapter(std::forward<InputType>(i)), cb, allow_exceptions, ignore_comments).parse(true, result);
-        return result;
-    }
-
-    /// @brief deserialize from a pair of character iterators
-    /// @sa https://json.nlohmann.me/api/basic_json/parse/
-    template<typename IteratorType>
-    JSON_HEDLEY_WARN_UNUSED_RESULT
-    static basic_json parse(IteratorType first,
-                            IteratorType last,
-                            const parser_callback_t cb = nullptr,
-                            const bool allow_exceptions = true,
-                            const bool ignore_comments = false)
-    {
-        basic_json result;
-        parser(detail::input_adapter(std::move(first), std::move(last)), cb, allow_exceptions, ignore_comments).parse(true, result);
-        return result;
-    }
-
-    JSON_HEDLEY_WARN_UNUSED_RESULT
-    JSON_HEDLEY_DEPRECATED_FOR(3.8.0, parse(ptr, ptr + len))
-    static basic_json parse(detail::span_input_adapter&& i,
-                            const parser_callback_t cb = nullptr,
-                            const bool allow_exceptions = true,
-                            const bool ignore_comments = false)
-    {
-        basic_json result;
-        parser(i.get(), cb, allow_exceptions, ignore_comments).parse(true, result);
-        return result;
-    }
-
-    /// @brief check if the input is valid JSON
-    /// @sa https://json.nlohmann.me/api/basic_json/accept/
-    template<typename InputType>
-    static bool accept(InputType&& i,
-                       const bool ignore_comments = false)
-    {
-        return parser(detail::input_adapter(std::forward<InputType>(i)), nullptr, false, ignore_comments).accept(true);
-    }
-
-    /// @brief check if the input is valid JSON
-    /// @sa https://json.nlohmann.me/api/basic_json/accept/
-    template<typename IteratorType>
-    static bool accept(IteratorType first, IteratorType last,
-                       const bool ignore_comments = false)
-    {
-        return parser(detail::input_adapter(std::move(first), std::move(last)), nullptr, false, ignore_comments).accept(true);
-    }
-
-    JSON_HEDLEY_WARN_UNUSED_RESULT
-    JSON_HEDLEY_DEPRECATED_FOR(3.8.0, accept(ptr, ptr + len))
-    static bool accept(detail::span_input_adapter&& i,
-                       const bool ignore_comments = false)
-    {
-        return parser(i.get(), nullptr, false, ignore_comments).accept(true);
-    }
-
-    /// @brief generate SAX events
-    /// @sa https://json.nlohmann.me/api/basic_json/sax_parse/
-    template <typename InputType, typename SAX>
-    JSON_HEDLEY_NON_NULL(2)
-    static bool sax_parse(InputType&& i, SAX* sax,
-                          input_format_t format = input_format_t::json,
-                          const bool strict = true,
-                          const bool ignore_comments = false)
-    {
-        auto ia = detail::input_adapter(std::forward<InputType>(i));
-        return format == input_format_t::json
-               ? parser(std::move(ia), nullptr, true, ignore_comments).sax_parse(sax, strict)
-               : detail::binary_reader<basic_json, decltype(ia), SAX>(std::move(ia), format).sax_parse(format, sax, strict);
-    }
-
-    /// @brief generate SAX events
-    /// @sa https://json.nlohmann.me/api/basic_json/sax_parse/
-    template<class IteratorType, class SAX>
-    JSON_HEDLEY_NON_NULL(3)
-    static bool sax_parse(IteratorType first, IteratorType last, SAX* sax,
-                          input_format_t format = input_format_t::json,
-                          const bool strict = true,
-                          const bool ignore_comments = false)
-    {
-        auto ia = detail::input_adapter(std::move(first), std::move(last));
-        return format == input_format_t::json
-               ? parser(std::move(ia), nullptr, true, ignore_comments).sax_parse(sax, strict)
-               : detail::binary_reader<basic_json, decltype(ia), SAX>(std::move(ia), format).sax_parse(format, sax, strict);
-    }
-
-    /// @brief generate SAX events
-    /// @sa https://json.nlohmann.me/api/basic_json/sax_parse/
-    /// @deprecated This function is deprecated since 3.8.0 and will be removed in
-    ///             version 4.0.0 of the library. Please use
-    ///             sax_parse(ptr, ptr + len) instead.
-    template <typename SAX>
-    JSON_HEDLEY_DEPRECATED_FOR(3.8.0, sax_parse(ptr, ptr + len, ...))
-    JSON_HEDLEY_NON_NULL(2)
-    static bool sax_parse(detail::span_input_adapter&& i, SAX* sax,
-                          input_format_t format = input_format_t::json,
-                          const bool strict = true,
-                          const bool ignore_comments = false)
-    {
-        auto ia = i.get();
-        return format == input_format_t::json
-               // NOLINTNEXTLINE(hicpp-move-const-arg,performance-move-const-arg)
-               ? parser(std::move(ia), nullptr, true, ignore_comments).sax_parse(sax, strict)
-               // NOLINTNEXTLINE(hicpp-move-const-arg,performance-move-const-arg)
-               : detail::binary_reader<basic_json, decltype(ia), SAX>(std::move(ia), format).sax_parse(format, sax, strict);
-    }
-#ifndef JSON_NO_IO
-    /// @brief deserialize from stream
-    /// @sa https://json.nlohmann.me/api/basic_json/operator_gtgt/
-    /// @deprecated This stream operator is deprecated since 3.0.0 and will be removed in
-    ///             version 4.0.0 of the library. Please use
-    ///             operator>>(std::istream&, basic_json&) instead; that is,
-    ///             replace calls like `j << i;` with `i >> j;`.
-    JSON_HEDLEY_DEPRECATED_FOR(3.0.0, operator>>(std::istream&, basic_json&))
-    friend std::istream& operator<<(basic_json& j, std::istream& i)
-    {
-        return operator>>(i, j);
-    }
-
-    /// @brief deserialize from stream
-    /// @sa https://json.nlohmann.me/api/basic_json/operator_gtgt/
-    friend std::istream& operator>>(std::istream& i, basic_json& j)
-    {
-        parser(detail::input_adapter(i)).parse(false, j);
-        return i;
-    }
-#endif  // JSON_NO_IO
-    /// @}
-
-    ///////////////////////////
-    // convenience functions //
-    ///////////////////////////
-
-    /// @brief return the type as string
-    /// @sa https://json.nlohmann.me/api/basic_json/type_name/
-    JSON_HEDLEY_RETURNS_NON_NULL
-    const char* type_name() const noexcept
-    {
-        switch (m_data.m_type)
-        {
-            case value_t::null:
-                return "null";
-            case value_t::object:
-                return "object";
-            case value_t::array:
-                return "array";
-            case value_t::string:
-                return "string";
-            case value_t::boolean:
-                return "boolean";
-            case value_t::binary:
-                return "binary";
-            case value_t::discarded:
-                return "discarded";
-            case value_t::number_integer:
-            case value_t::number_unsigned:
-            case value_t::number_float:
-            default:
-                return "number";
-        }
-    }
-
-
-  JSON_PRIVATE_UNLESS_TESTED:
-    //////////////////////
-    // member variables //
-    //////////////////////
-
-    struct data
-    {
-        /// the type of the current element
-        value_t m_type = value_t::null;
-
-        /// the value of the current element
-        json_value m_value = {};
-
-        data(const value_t v)
-            : m_type(v), m_value(v)
-        {
-        }
-
-        data(size_type cnt, const basic_json& val)
-            : m_type(value_t::array)
-        {
-            m_value.array = create<array_t>(cnt, val);
-        }
-
-        data() noexcept = default;
-        data(data&&) noexcept = default;
-        data(const data&) noexcept = delete;
-        data& operator=(data&&) noexcept = delete;
-        data& operator=(const data&) noexcept = delete;
-
-        ~data() noexcept
-        {
-            m_value.destroy(m_type);
-        }
-    };
-
-    data m_data = {};
-
-#if JSON_DIAGNOSTICS
-    /// a pointer to a parent value (for debugging purposes)
-    basic_json* m_parent = nullptr;
-#endif
-
-    //////////////////////////////////////////
-    // binary serialization/deserialization //
-    //////////////////////////////////////////
-
-    /// @name binary serialization/deserialization support
-    /// @{
-
-  public:
-    /// @brief create a CBOR serialization of a given JSON value
-    /// @sa https://json.nlohmann.me/api/basic_json/to_cbor/
-    static std::vector<std::uint8_t> to_cbor(const basic_json& j)
-    {
-        std::vector<std::uint8_t> result;
-        to_cbor(j, result);
-        return result;
-    }
-
-    /// @brief create a CBOR serialization of a given JSON value
-    /// @sa https://json.nlohmann.me/api/basic_json/to_cbor/
-    static void to_cbor(const basic_json& j, detail::output_adapter<std::uint8_t> o)
-    {
-        binary_writer<std::uint8_t>(o).write_cbor(j);
-    }
-
-    /// @brief create a CBOR serialization of a given JSON value
-    /// @sa https://json.nlohmann.me/api/basic_json/to_cbor/
-    static void to_cbor(const basic_json& j, detail::output_adapter<char> o)
-    {
-        binary_writer<char>(o).write_cbor(j);
-    }
-
-    /// @brief create a MessagePack serialization of a given JSON value
-    /// @sa https://json.nlohmann.me/api/basic_json/to_msgpack/
-    static std::vector<std::uint8_t> to_msgpack(const basic_json& j)
-    {
-        std::vector<std::uint8_t> result;
-        to_msgpack(j, result);
-        return result;
-    }
-
-    /// @brief create a MessagePack serialization of a given JSON value
-    /// @sa https://json.nlohmann.me/api/basic_json/to_msgpack/
-    static void to_msgpack(const basic_json& j, detail::output_adapter<std::uint8_t> o)
-    {
-        binary_writer<std::uint8_t>(o).write_msgpack(j);
-    }
-
-    /// @brief create a MessagePack serialization of a given JSON value
-    /// @sa https://json.nlohmann.me/api/basic_json/to_msgpack/
-    static void to_msgpack(const basic_json& j, detail::output_adapter<char> o)
-    {
-        binary_writer<char>(o).write_msgpack(j);
-    }
-
-    /// @brief create a UBJSON serialization of a given JSON value
-    /// @sa https://json.nlohmann.me/api/basic_json/to_ubjson/
-    static std::vector<std::uint8_t> to_ubjson(const basic_json& j,
-            const bool use_size = false,
-            const bool use_type = false)
-    {
-        std::vector<std::uint8_t> result;
-        to_ubjson(j, result, use_size, use_type);
-        return result;
-    }
-
-    /// @brief create a UBJSON serialization of a given JSON value
-    /// @sa https://json.nlohmann.me/api/basic_json/to_ubjson/
-    static void to_ubjson(const basic_json& j, detail::output_adapter<std::uint8_t> o,
-                          const bool use_size = false, const bool use_type = false)
-    {
-        binary_writer<std::uint8_t>(o).write_ubjson(j, use_size, use_type);
-    }
-
-    /// @brief create a UBJSON serialization of a given JSON value
-    /// @sa https://json.nlohmann.me/api/basic_json/to_ubjson/
-    static void to_ubjson(const basic_json& j, detail::output_adapter<char> o,
-                          const bool use_size = false, const bool use_type = false)
-    {
-        binary_writer<char>(o).write_ubjson(j, use_size, use_type);
-    }
-
-    /// @brief create a BJData serialization of a given JSON value
-    /// @sa https://json.nlohmann.me/api/basic_json/to_bjdata/
-    static std::vector<std::uint8_t> to_bjdata(const basic_json& j,
-            const bool use_size = false,
-            const bool use_type = false)
-    {
-        std::vector<std::uint8_t> result;
-        to_bjdata(j, result, use_size, use_type);
-        return result;
-    }
-
-    /// @brief create a BJData serialization of a given JSON value
-    /// @sa https://json.nlohmann.me/api/basic_json/to_bjdata/
-    static void to_bjdata(const basic_json& j, detail::output_adapter<std::uint8_t> o,
-                          const bool use_size = false, const bool use_type = false)
-    {
-        binary_writer<std::uint8_t>(o).write_ubjson(j, use_size, use_type, true, true);
-    }
-
-    /// @brief create a BJData serialization of a given JSON value
-    /// @sa https://json.nlohmann.me/api/basic_json/to_bjdata/
-    static void to_bjdata(const basic_json& j, detail::output_adapter<char> o,
-                          const bool use_size = false, const bool use_type = false)
-    {
-        binary_writer<char>(o).write_ubjson(j, use_size, use_type, true, true);
-    }
-
-    /// @brief create a BSON serialization of a given JSON value
-    /// @sa https://json.nlohmann.me/api/basic_json/to_bson/
-    static std::vector<std::uint8_t> to_bson(const basic_json& j)
-    {
-        std::vector<std::uint8_t> result;
-        to_bson(j, result);
-        return result;
-    }
-
-    /// @brief create a BSON serialization of a given JSON value
-    /// @sa https://json.nlohmann.me/api/basic_json/to_bson/
-    static void to_bson(const basic_json& j, detail::output_adapter<std::uint8_t> o)
-    {
-        binary_writer<std::uint8_t>(o).write_bson(j);
-    }
-
-    /// @brief create a BSON serialization of a given JSON value
-    /// @sa https://json.nlohmann.me/api/basic_json/to_bson/
-    static void to_bson(const basic_json& j, detail::output_adapter<char> o)
-    {
-        binary_writer<char>(o).write_bson(j);
-    }
-
-    /// @brief create a JSON value from an input in CBOR format
-    /// @sa https://json.nlohmann.me/api/basic_json/from_cbor/
-    template<typename InputType>
-    JSON_HEDLEY_WARN_UNUSED_RESULT
-    static basic_json from_cbor(InputType&& i,
-                                const bool strict = true,
-                                const bool allow_exceptions = true,
-                                const cbor_tag_handler_t tag_handler = cbor_tag_handler_t::error)
-    {
-        basic_json result;
-        detail::json_sax_dom_parser<basic_json> sdp(result, allow_exceptions);
-        auto ia = detail::input_adapter(std::forward<InputType>(i));
-        const bool res = binary_reader<decltype(ia)>(std::move(ia), input_format_t::cbor).sax_parse(input_format_t::cbor, &sdp, strict, tag_handler);
-        return res ? result : basic_json(value_t::discarded);
-    }
-
-    /// @brief create a JSON value from an input in CBOR format
-    /// @sa https://json.nlohmann.me/api/basic_json/from_cbor/
-    template<typename IteratorType>
-    JSON_HEDLEY_WARN_UNUSED_RESULT
-    static basic_json from_cbor(IteratorType first, IteratorType last,
-                                const bool strict = true,
-                                const bool allow_exceptions = true,
-                                const cbor_tag_handler_t tag_handler = cbor_tag_handler_t::error)
-    {
-        basic_json result;
-        detail::json_sax_dom_parser<basic_json> sdp(result, allow_exceptions);
-        auto ia = detail::input_adapter(std::move(first), std::move(last));
-        const bool res = binary_reader<decltype(ia)>(std::move(ia), input_format_t::cbor).sax_parse(input_format_t::cbor, &sdp, strict, tag_handler);
-        return res ? result : basic_json(value_t::discarded);
-    }
-
-    template<typename T>
-    JSON_HEDLEY_WARN_UNUSED_RESULT
-    JSON_HEDLEY_DEPRECATED_FOR(3.8.0, from_cbor(ptr, ptr + len))
-    static basic_json from_cbor(const T* ptr, std::size_t len,
-                                const bool strict = true,
-                                const bool allow_exceptions = true,
-                                const cbor_tag_handler_t tag_handler = cbor_tag_handler_t::error)
-    {
-        return from_cbor(ptr, ptr + len, strict, allow_exceptions, tag_handler);
-    }
-
-
-    JSON_HEDLEY_WARN_UNUSED_RESULT
-    JSON_HEDLEY_DEPRECATED_FOR(3.8.0, from_cbor(ptr, ptr + len))
-    static basic_json from_cbor(detail::span_input_adapter&& i,
-                                const bool strict = true,
-                                const bool allow_exceptions = true,
-                                const cbor_tag_handler_t tag_handler = cbor_tag_handler_t::error)
-    {
-        basic_json result;
-        detail::json_sax_dom_parser<basic_json> sdp(result, allow_exceptions);
-        auto ia = i.get();
-        // NOLINTNEXTLINE(hicpp-move-const-arg,performance-move-const-arg)
-        const bool res = binary_reader<decltype(ia)>(std::move(ia), input_format_t::cbor).sax_parse(input_format_t::cbor, &sdp, strict, tag_handler);
-        return res ? result : basic_json(value_t::discarded);
-    }
-
-    /// @brief create a JSON value from an input in MessagePack format
-    /// @sa https://json.nlohmann.me/api/basic_json/from_msgpack/
-    template<typename InputType>
-    JSON_HEDLEY_WARN_UNUSED_RESULT
-    static basic_json from_msgpack(InputType&& i,
-                                   const bool strict = true,
-                                   const bool allow_exceptions = true)
-    {
-        basic_json result;
-        detail::json_sax_dom_parser<basic_json> sdp(result, allow_exceptions);
-        auto ia = detail::input_adapter(std::forward<InputType>(i));
-        const bool res = binary_reader<decltype(ia)>(std::move(ia), input_format_t::msgpack).sax_parse(input_format_t::msgpack, &sdp, strict);
-        return res ? result : basic_json(value_t::discarded);
-    }
-
-    /// @brief create a JSON value from an input in MessagePack format
-    /// @sa https://json.nlohmann.me/api/basic_json/from_msgpack/
-    template<typename IteratorType>
-    JSON_HEDLEY_WARN_UNUSED_RESULT
-    static basic_json from_msgpack(IteratorType first, IteratorType last,
-                                   const bool strict = true,
-                                   const bool allow_exceptions = true)
-    {
-        basic_json result;
-        detail::json_sax_dom_parser<basic_json> sdp(result, allow_exceptions);
-        auto ia = detail::input_adapter(std::move(first), std::move(last));
-        const bool res = binary_reader<decltype(ia)>(std::move(ia), input_format_t::msgpack).sax_parse(input_format_t::msgpack, &sdp, strict);
-        return res ? result : basic_json(value_t::discarded);
-    }
-
-    template<typename T>
-    JSON_HEDLEY_WARN_UNUSED_RESULT
-    JSON_HEDLEY_DEPRECATED_FOR(3.8.0, from_msgpack(ptr, ptr + len))
-    static basic_json from_msgpack(const T* ptr, std::size_t len,
-                                   const bool strict = true,
-                                   const bool allow_exceptions = true)
-    {
-        return from_msgpack(ptr, ptr + len, strict, allow_exceptions);
-    }
-
-    JSON_HEDLEY_WARN_UNUSED_RESULT
-    JSON_HEDLEY_DEPRECATED_FOR(3.8.0, from_msgpack(ptr, ptr + len))
-    static basic_json from_msgpack(detail::span_input_adapter&& i,
-                                   const bool strict = true,
-                                   const bool allow_exceptions = true)
-    {
-        basic_json result;
-        detail::json_sax_dom_parser<basic_json> sdp(result, allow_exceptions);
-        auto ia = i.get();
-        // NOLINTNEXTLINE(hicpp-move-const-arg,performance-move-const-arg)
-        const bool res = binary_reader<decltype(ia)>(std::move(ia), input_format_t::msgpack).sax_parse(input_format_t::msgpack, &sdp, strict);
-        return res ? result : basic_json(value_t::discarded);
-    }
-
-    /// @brief create a JSON value from an input in UBJSON format
-    /// @sa https://json.nlohmann.me/api/basic_json/from_ubjson/
-    template<typename InputType>
-    JSON_HEDLEY_WARN_UNUSED_RESULT
-    static basic_json from_ubjson(InputType&& i,
-                                  const bool strict = true,
-                                  const bool allow_exceptions = true)
-    {
-        basic_json result;
-        detail::json_sax_dom_parser<basic_json> sdp(result, allow_exceptions);
-        auto ia = detail::input_adapter(std::forward<InputType>(i));
-        const bool res = binary_reader<decltype(ia)>(std::move(ia), input_format_t::ubjson).sax_parse(input_format_t::ubjson, &sdp, strict);
-        return res ? result : basic_json(value_t::discarded);
-    }
-
-    /// @brief create a JSON value from an input in UBJSON format
-    /// @sa https://json.nlohmann.me/api/basic_json/from_ubjson/
-    template<typename IteratorType>
-    JSON_HEDLEY_WARN_UNUSED_RESULT
-    static basic_json from_ubjson(IteratorType first, IteratorType last,
-                                  const bool strict = true,
-                                  const bool allow_exceptions = true)
-    {
-        basic_json result;
-        detail::json_sax_dom_parser<basic_json> sdp(result, allow_exceptions);
-        auto ia = detail::input_adapter(std::move(first), std::move(last));
-        const bool res = binary_reader<decltype(ia)>(std::move(ia), input_format_t::ubjson).sax_parse(input_format_t::ubjson, &sdp, strict);
-        return res ? result : basic_json(value_t::discarded);
-    }
-
-    template<typename T>
-    JSON_HEDLEY_WARN_UNUSED_RESULT
-    JSON_HEDLEY_DEPRECATED_FOR(3.8.0, from_ubjson(ptr, ptr + len))
-    static basic_json from_ubjson(const T* ptr, std::size_t len,
-                                  const bool strict = true,
-                                  const bool allow_exceptions = true)
-    {
-        return from_ubjson(ptr, ptr + len, strict, allow_exceptions);
-    }
-
-    JSON_HEDLEY_WARN_UNUSED_RESULT
-    JSON_HEDLEY_DEPRECATED_FOR(3.8.0, from_ubjson(ptr, ptr + len))
-    static basic_json from_ubjson(detail::span_input_adapter&& i,
-                                  const bool strict = true,
-                                  const bool allow_exceptions = true)
-    {
-        basic_json result;
-        detail::json_sax_dom_parser<basic_json> sdp(result, allow_exceptions);
-        auto ia = i.get();
-        // NOLINTNEXTLINE(hicpp-move-const-arg,performance-move-const-arg)
-        const bool res = binary_reader<decltype(ia)>(std::move(ia), input_format_t::ubjson).sax_parse(input_format_t::ubjson, &sdp, strict);
-        return res ? result : basic_json(value_t::discarded);
-    }
-
-
-    /// @brief create a JSON value from an input in BJData format
-    /// @sa https://json.nlohmann.me/api/basic_json/from_bjdata/
-    template<typename InputType>
-    JSON_HEDLEY_WARN_UNUSED_RESULT
-    static basic_json from_bjdata(InputType&& i,
-                                  const bool strict = true,
-                                  const bool allow_exceptions = true)
-    {
-        basic_json result;
-        detail::json_sax_dom_parser<basic_json> sdp(result, allow_exceptions);
-        auto ia = detail::input_adapter(std::forward<InputType>(i));
-        const bool res = binary_reader<decltype(ia)>(std::move(ia), input_format_t::bjdata).sax_parse(input_format_t::bjdata, &sdp, strict);
-        return res ? result : basic_json(value_t::discarded);
-    }
-
-    /// @brief create a JSON value from an input in BJData format
-    /// @sa https://json.nlohmann.me/api/basic_json/from_bjdata/
-    template<typename IteratorType>
-    JSON_HEDLEY_WARN_UNUSED_RESULT
-    static basic_json from_bjdata(IteratorType first, IteratorType last,
-                                  const bool strict = true,
-                                  const bool allow_exceptions = true)
-    {
-        basic_json result;
-        detail::json_sax_dom_parser<basic_json> sdp(result, allow_exceptions);
-        auto ia = detail::input_adapter(std::move(first), std::move(last));
-        const bool res = binary_reader<decltype(ia)>(std::move(ia), input_format_t::bjdata).sax_parse(input_format_t::bjdata, &sdp, strict);
-        return res ? result : basic_json(value_t::discarded);
-    }
-
-    /// @brief create a JSON value from an input in BSON format
-    /// @sa https://json.nlohmann.me/api/basic_json/from_bson/
-    template<typename InputType>
-    JSON_HEDLEY_WARN_UNUSED_RESULT
-    static basic_json from_bson(InputType&& i,
-                                const bool strict = true,
-                                const bool allow_exceptions = true)
-    {
-        basic_json result;
-        detail::json_sax_dom_parser<basic_json> sdp(result, allow_exceptions);
-        auto ia = detail::input_adapter(std::forward<InputType>(i));
-        const bool res = binary_reader<decltype(ia)>(std::move(ia), input_format_t::bson).sax_parse(input_format_t::bson, &sdp, strict);
-        return res ? result : basic_json(value_t::discarded);
-    }
-
-    /// @brief create a JSON value from an input in BSON format
-    /// @sa https://json.nlohmann.me/api/basic_json/from_bson/
-    template<typename IteratorType>
-    JSON_HEDLEY_WARN_UNUSED_RESULT
-    static basic_json from_bson(IteratorType first, IteratorType last,
-                                const bool strict = true,
-                                const bool allow_exceptions = true)
-    {
-        basic_json result;
-        detail::json_sax_dom_parser<basic_json> sdp(result, allow_exceptions);
-        auto ia = detail::input_adapter(std::move(first), std::move(last));
-        const bool res = binary_reader<decltype(ia)>(std::move(ia), input_format_t::bson).sax_parse(input_format_t::bson, &sdp, strict);
-        return res ? result : basic_json(value_t::discarded);
-    }
-
-    template<typename T>
-    JSON_HEDLEY_WARN_UNUSED_RESULT
-    JSON_HEDLEY_DEPRECATED_FOR(3.8.0, from_bson(ptr, ptr + len))
-    static basic_json from_bson(const T* ptr, std::size_t len,
-                                const bool strict = true,
-                                const bool allow_exceptions = true)
-    {
-        return from_bson(ptr, ptr + len, strict, allow_exceptions);
-    }
-
-    JSON_HEDLEY_WARN_UNUSED_RESULT
-    JSON_HEDLEY_DEPRECATED_FOR(3.8.0, from_bson(ptr, ptr + len))
-    static basic_json from_bson(detail::span_input_adapter&& i,
-                                const bool strict = true,
-                                const bool allow_exceptions = true)
-    {
-        basic_json result;
-        detail::json_sax_dom_parser<basic_json> sdp(result, allow_exceptions);
-        auto ia = i.get();
-        // NOLINTNEXTLINE(hicpp-move-const-arg,performance-move-const-arg)
-        const bool res = binary_reader<decltype(ia)>(std::move(ia), input_format_t::bson).sax_parse(input_format_t::bson, &sdp, strict);
-        return res ? result : basic_json(value_t::discarded);
-    }
-    /// @}
-
-    //////////////////////////
-    // JSON Pointer support //
-    //////////////////////////
-
-    /// @name JSON Pointer functions
-    /// @{
-
-    /// @brief access specified element via JSON Pointer
-    /// @sa https://json.nlohmann.me/api/basic_json/operator%5B%5D/
-    reference operator[](const json_pointer& ptr)
-    {
-        return ptr.get_unchecked(this);
-    }
-
-    template<typename BasicJsonType, detail::enable_if_t<detail::is_basic_json<BasicJsonType>::value, int> = 0>
-    JSON_HEDLEY_DEPRECATED_FOR(3.11.0, basic_json::json_pointer or nlohmann::json_pointer<basic_json::string_t>) // NOLINT(readability/alt_tokens)
-    reference operator[](const ::nlohmann::json_pointer<BasicJsonType>& ptr)
-    {
-        return ptr.get_unchecked(this);
-    }
-
-    /// @brief access specified element via JSON Pointer
-    /// @sa https://json.nlohmann.me/api/basic_json/operator%5B%5D/
-    const_reference operator[](const json_pointer& ptr) const
-    {
-        return ptr.get_unchecked(this);
-    }
-
-    template<typename BasicJsonType, detail::enable_if_t<detail::is_basic_json<BasicJsonType>::value, int> = 0>
-    JSON_HEDLEY_DEPRECATED_FOR(3.11.0, basic_json::json_pointer or nlohmann::json_pointer<basic_json::string_t>) // NOLINT(readability/alt_tokens)
-    const_reference operator[](const ::nlohmann::json_pointer<BasicJsonType>& ptr) const
-    {
-        return ptr.get_unchecked(this);
-    }
-
-    /// @brief access specified element via JSON Pointer
-    /// @sa https://json.nlohmann.me/api/basic_json/at/
-    reference at(const json_pointer& ptr)
-    {
-        return ptr.get_checked(this);
-    }
-
-    template<typename BasicJsonType, detail::enable_if_t<detail::is_basic_json<BasicJsonType>::value, int> = 0>
-    JSON_HEDLEY_DEPRECATED_FOR(3.11.0, basic_json::json_pointer or nlohmann::json_pointer<basic_json::string_t>) // NOLINT(readability/alt_tokens)
-    reference at(const ::nlohmann::json_pointer<BasicJsonType>& ptr)
-    {
-        return ptr.get_checked(this);
-    }
-
-    /// @brief access specified element via JSON Pointer
-    /// @sa https://json.nlohmann.me/api/basic_json/at/
-    const_reference at(const json_pointer& ptr) const
-    {
-        return ptr.get_checked(this);
-    }
-
-    template<typename BasicJsonType, detail::enable_if_t<detail::is_basic_json<BasicJsonType>::value, int> = 0>
-    JSON_HEDLEY_DEPRECATED_FOR(3.11.0, basic_json::json_pointer or nlohmann::json_pointer<basic_json::string_t>) // NOLINT(readability/alt_tokens)
-    const_reference at(const ::nlohmann::json_pointer<BasicJsonType>& ptr) const
-    {
-        return ptr.get_checked(this);
-    }
-
-    /// @brief return flattened JSON value
-    /// @sa https://json.nlohmann.me/api/basic_json/flatten/
-    basic_json flatten() const
-    {
-        basic_json result(value_t::object);
-        json_pointer::flatten("", *this, result);
-        return result;
-    }
-
-    /// @brief unflatten a previously flattened JSON value
-    /// @sa https://json.nlohmann.me/api/basic_json/unflatten/
-    basic_json unflatten() const
-    {
-        return json_pointer::unflatten(*this);
-    }
-
-    /// @}
-
-    //////////////////////////
-    // JSON Patch functions //
-    //////////////////////////
-
-    /// @name JSON Patch functions
-    /// @{
-
-    /// @brief applies a JSON patch in-place without copying the object
-    /// @sa https://json.nlohmann.me/api/basic_json/patch/
-    void patch_inplace(const basic_json& json_patch)
-    {
-        basic_json& result = *this;
-        // the valid JSON Patch operations
-        enum class patch_operations {add, remove, replace, move, copy, test, invalid};
-
-        const auto get_op = [](const std::string & op)
-        {
-            if (op == "add")
-            {
-                return patch_operations::add;
-            }
-            if (op == "remove")
-            {
-                return patch_operations::remove;
-            }
-            if (op == "replace")
-            {
-                return patch_operations::replace;
-            }
-            if (op == "move")
-            {
-                return patch_operations::move;
-            }
-            if (op == "copy")
-            {
-                return patch_operations::copy;
-            }
-            if (op == "test")
-            {
-                return patch_operations::test;
-            }
-
-            return patch_operations::invalid;
-        };
-
-        // wrapper for "add" operation; add value at ptr
-        const auto operation_add = [&result](json_pointer & ptr, basic_json val)
-        {
-            // adding to the root of the target document means replacing it
-            if (ptr.empty())
-            {
-                result = val;
-                return;
-            }
-
-            // make sure the top element of the pointer exists
-            json_pointer const top_pointer = ptr.top();
-            if (top_pointer != ptr)
-            {
-                result.at(top_pointer);
-            }
-
-            // get reference to parent of JSON pointer ptr
-            const auto last_path = ptr.back();
-            ptr.pop_back();
-            // parent must exist when performing patch add per RFC6902 specs
-            basic_json& parent = result.at(ptr);
-
-            switch (parent.m_data.m_type)
-            {
-                case value_t::null:
-                case value_t::object:
-                {
-                    // use operator[] to add value
-                    parent[last_path] = val;
-                    break;
-                }
-
-                case value_t::array:
-                {
-                    if (last_path == "-")
-                    {
-                        // special case: append to back
-                        parent.push_back(val);
-                    }
-                    else
-                    {
-                        const auto idx = json_pointer::template array_index<basic_json_t>(last_path);
-                        if (JSON_HEDLEY_UNLIKELY(idx > parent.size()))
-                        {
-                            // avoid undefined behavior
-                            JSON_THROW(out_of_range::create(401, detail::concat("array index ", std::to_string(idx), " is out of range"), &parent));
-                        }
-
-                        // default case: insert add offset
-                        parent.insert(parent.begin() + static_cast<difference_type>(idx), val);
-                    }
-                    break;
-                }
-
-                // if there exists a parent it cannot be primitive
-                case value_t::string: // LCOV_EXCL_LINE
-                case value_t::boolean: // LCOV_EXCL_LINE
-                case value_t::number_integer: // LCOV_EXCL_LINE
-                case value_t::number_unsigned: // LCOV_EXCL_LINE
-                case value_t::number_float: // LCOV_EXCL_LINE
-                case value_t::binary: // LCOV_EXCL_LINE
-                case value_t::discarded: // LCOV_EXCL_LINE
-                default:            // LCOV_EXCL_LINE
-                    JSON_ASSERT(false); // NOLINT(cert-dcl03-c,hicpp-static-assert,misc-static-assert) LCOV_EXCL_LINE
-            }
-        };
-
-        // wrapper for "remove" operation; remove value at ptr
-        const auto operation_remove = [this, &result](json_pointer & ptr)
-        {
-            // get reference to parent of JSON pointer ptr
-            const auto last_path = ptr.back();
-            ptr.pop_back();
-            basic_json& parent = result.at(ptr);
-
-            // remove child
-            if (parent.is_object())
-            {
-                // perform range check
-                auto it = parent.find(last_path);
-                if (JSON_HEDLEY_LIKELY(it != parent.end()))
-                {
-                    parent.erase(it);
-                }
-                else
-                {
-                    JSON_THROW(out_of_range::create(403, detail::concat("key '", last_path, "' not found"), this));
-                }
-            }
-            else if (parent.is_array())
-            {
-                // note erase performs range check
-                parent.erase(json_pointer::template array_index<basic_json_t>(last_path));
-            }
-        };
-
-        // type check: top level value must be an array
-        if (JSON_HEDLEY_UNLIKELY(!json_patch.is_array()))
-        {
-            JSON_THROW(parse_error::create(104, 0, "JSON patch must be an array of objects", &json_patch));
-        }
-
-        // iterate and apply the operations
-        for (const auto& val : json_patch)
-        {
-            // wrapper to get a value for an operation
-            const auto get_value = [&val](const std::string & op,
-                                          const std::string & member,
-                                          bool string_type) -> basic_json &
-            {
-                // find value
-                auto it = val.m_data.m_value.object->find(member);
-
-                // context-sensitive error message
-                const auto error_msg = (op == "op") ? "operation" : detail::concat("operation '", op, '\'');
-
-                // check if desired value is present
-                if (JSON_HEDLEY_UNLIKELY(it == val.m_data.m_value.object->end()))
-                {
-                    // NOLINTNEXTLINE(performance-inefficient-string-concatenation)
-                    JSON_THROW(parse_error::create(105, 0, detail::concat(error_msg, " must have member '", member, "'"), &val));
-                }
-
-                // check if result is of type string
-                if (JSON_HEDLEY_UNLIKELY(string_type && !it->second.is_string()))
-                {
-                    // NOLINTNEXTLINE(performance-inefficient-string-concatenation)
-                    JSON_THROW(parse_error::create(105, 0, detail::concat(error_msg, " must have string member '", member, "'"), &val));
-                }
-
-                // no error: return value
-                return it->second;
-            };
-
-            // type check: every element of the array must be an object
-            if (JSON_HEDLEY_UNLIKELY(!val.is_object()))
-            {
-                JSON_THROW(parse_error::create(104, 0, "JSON patch must be an array of objects", &val));
-            }
-
-            // collect mandatory members
-            const auto op = get_value("op", "op", true).template get<std::string>();
-            const auto path = get_value(op, "path", true).template get<std::string>();
-            json_pointer ptr(path);
-
-            switch (get_op(op))
-            {
-                case patch_operations::add:
-                {
-                    operation_add(ptr, get_value("add", "value", false));
-                    break;
-                }
-
-                case patch_operations::remove:
-                {
-                    operation_remove(ptr);
-                    break;
-                }
-
-                case patch_operations::replace:
-                {
-                    // the "path" location must exist - use at()
-                    result.at(ptr) = get_value("replace", "value", false);
-                    break;
-                }
-
-                case patch_operations::move:
-                {
-                    const auto from_path = get_value("move", "from", true).template get<std::string>();
-                    json_pointer from_ptr(from_path);
-
-                    // the "from" location must exist - use at()
-                    basic_json const v = result.at(from_ptr);
-
-                    // The move operation is functionally identical to a
-                    // "remove" operation on the "from" location, followed
-                    // immediately by an "add" operation at the target
-                    // location with the value that was just removed.
-                    operation_remove(from_ptr);
-                    operation_add(ptr, v);
-                    break;
-                }
-
-                case patch_operations::copy:
-                {
-                    const auto from_path = get_value("copy", "from", true).template get<std::string>();
-                    const json_pointer from_ptr(from_path);
-
-                    // the "from" location must exist - use at()
-                    basic_json const v = result.at(from_ptr);
-
-                    // The copy is functionally identical to an "add"
-                    // operation at the target location using the value
-                    // specified in the "from" member.
-                    operation_add(ptr, v);
-                    break;
-                }
-
-                case patch_operations::test:
-                {
-                    bool success = false;
-                    JSON_TRY
-                    {
-                        // check if "value" matches the one at "path"
-                        // the "path" location must exist - use at()
-                        success = (result.at(ptr) == get_value("test", "value", false));
-                    }
-                    JSON_INTERNAL_CATCH (out_of_range&)
-                    {
-                        // ignore out of range errors: success remains false
-                    }
-
-                    // throw an exception if test fails
-                    if (JSON_HEDLEY_UNLIKELY(!success))
-                    {
-                        JSON_THROW(other_error::create(501, detail::concat("unsuccessful: ", val.dump()), &val));
-                    }
-
-                    break;
-                }
-
-                case patch_operations::invalid:
-                default:
-                {
-                    // op must be "add", "remove", "replace", "move", "copy", or
-                    // "test"
-                    JSON_THROW(parse_error::create(105, 0, detail::concat("operation value '", op, "' is invalid"), &val));
-                }
-            }
-        }
-    }
-
-    /// @brief applies a JSON patch to a copy of the current object
-    /// @sa https://json.nlohmann.me/api/basic_json/patch/
-    basic_json patch(const basic_json& json_patch) const
-    {
-        basic_json result = *this;
-        result.patch_inplace(json_patch);
-        return result;
-    }
-
-    /// @brief creates a diff as a JSON patch
-    /// @sa https://json.nlohmann.me/api/basic_json/diff/
-    JSON_HEDLEY_WARN_UNUSED_RESULT
-    static basic_json diff(const basic_json& source, const basic_json& target,
-                           const std::string& path = "")
-    {
-        // the patch
-        basic_json result(value_t::array);
-
-        // if the values are the same, return empty patch
-        if (source == target)
-        {
-            return result;
-        }
-
-        if (source.type() != target.type())
-        {
-            // different types: replace value
-            result.push_back(
-            {
-                {"op", "replace"}, {"path", path}, {"value", target}
-            });
-            return result;
-        }
-
-        switch (source.type())
-        {
-            case value_t::array:
-            {
-                // first pass: traverse common elements
-                std::size_t i = 0;
-                while (i < source.size() && i < target.size())
-                {
-                    // recursive call to compare array values at index i
-                    auto temp_diff = diff(source[i], target[i], detail::concat(path, '/', std::to_string(i)));
-                    result.insert(result.end(), temp_diff.begin(), temp_diff.end());
-                    ++i;
-                }
-
-                // We now reached the end of at least one array
-                // in a second pass, traverse the remaining elements
-
-                // remove my remaining elements
-                const auto end_index = static_cast<difference_type>(result.size());
-                while (i < source.size())
-                {
-                    // add operations in reverse order to avoid invalid
-                    // indices
-                    result.insert(result.begin() + end_index, object(
-                    {
-                        {"op", "remove"},
-                        {"path", detail::concat(path, '/', std::to_string(i))}
-                    }));
-                    ++i;
-                }
-
-                // add other remaining elements
-                while (i < target.size())
-                {
-                    result.push_back(
-                    {
-                        {"op", "add"},
-                        {"path", detail::concat(path, "/-")},
-                        {"value", target[i]}
-                    });
-                    ++i;
-                }
-
-                break;
-            }
-
-            case value_t::object:
-            {
-                // first pass: traverse this object's elements
-                for (auto it = source.cbegin(); it != source.cend(); ++it)
-                {
-                    // escape the key name to be used in a JSON patch
-                    const auto path_key = detail::concat(path, '/', detail::escape(it.key()));
-
-                    if (target.find(it.key()) != target.end())
-                    {
-                        // recursive call to compare object values at key it
-                        auto temp_diff = diff(it.value(), target[it.key()], path_key);
-                        result.insert(result.end(), temp_diff.begin(), temp_diff.end());
-                    }
-                    else
-                    {
-                        // found a key that is not in o -> remove it
-                        result.push_back(object(
-                        {
-                            {"op", "remove"}, {"path", path_key}
-                        }));
-                    }
-                }
-
-                // second pass: traverse other object's elements
-                for (auto it = target.cbegin(); it != target.cend(); ++it)
-                {
-                    if (source.find(it.key()) == source.end())
-                    {
-                        // found a key that is not in this -> add it
-                        const auto path_key = detail::concat(path, '/', detail::escape(it.key()));
-                        result.push_back(
-                        {
-                            {"op", "add"}, {"path", path_key},
-                            {"value", it.value()}
-                        });
-                    }
-                }
-
-                break;
-            }
-
-            case value_t::null:
-            case value_t::string:
-            case value_t::boolean:
-            case value_t::number_integer:
-            case value_t::number_unsigned:
-            case value_t::number_float:
-            case value_t::binary:
-            case value_t::discarded:
-            default:
-            {
-                // both primitive type: replace value
-                result.push_back(
-                {
-                    {"op", "replace"}, {"path", path}, {"value", target}
-                });
-                break;
-            }
-        }
-
-        return result;
-    }
-    /// @}
-
-    ////////////////////////////////
-    // JSON Merge Patch functions //
-    ////////////////////////////////
-
-    /// @name JSON Merge Patch functions
-    /// @{
-
-    /// @brief applies a JSON Merge Patch
-    /// @sa https://json.nlohmann.me/api/basic_json/merge_patch/
-    void merge_patch(const basic_json& apply_patch)
-    {
-        if (apply_patch.is_object())
-        {
-            if (!is_object())
-            {
-                *this = object();
-            }
-            for (auto it = apply_patch.begin(); it != apply_patch.end(); ++it)
-            {
-                if (it.value().is_null())
-                {
-                    erase(it.key());
-                }
-                else
-                {
-                    operator[](it.key()).merge_patch(it.value());
-                }
-            }
-        }
-        else
-        {
-            *this = apply_patch;
-        }
-    }
-
-    /// @}
-};
-
-/// @brief user-defined to_string function for JSON values
-/// @sa https://json.nlohmann.me/api/basic_json/to_string/
-NLOHMANN_BASIC_JSON_TPL_DECLARATION
-std::string to_string(const NLOHMANN_BASIC_JSON_TPL& j)
-{
-    return j.dump();
-}
-
-inline namespace literals
-{
-inline namespace json_literals
-{
-
-/// @brief user-defined string literal for JSON values
-/// @sa https://json.nlohmann.me/api/basic_json/operator_literal_json/
-JSON_HEDLEY_NON_NULL(1)
-inline nlohmann::json operator "" _json(const char* s, std::size_t n)
-{
-    return nlohmann::json::parse(s, s + n);
-}
-
-/// @brief user-defined string literal for JSON pointer
-/// @sa https://json.nlohmann.me/api/basic_json/operator_literal_json_pointer/
-JSON_HEDLEY_NON_NULL(1)
-inline nlohmann::json::json_pointer operator "" _json_pointer(const char* s, std::size_t n)
-{
-    return nlohmann::json::json_pointer(std::string(s, n));
-}
-
-}  // namespace json_literals
-}  // namespace literals
-NLOHMANN_JSON_NAMESPACE_END
-
-///////////////////////
-// nonmember support //
-///////////////////////
-
-namespace std // NOLINT(cert-dcl58-cpp)
-{
-
-/// @brief hash value for JSON objects
-/// @sa https://json.nlohmann.me/api/basic_json/std_hash/
-NLOHMANN_BASIC_JSON_TPL_DECLARATION
-struct hash<nlohmann::NLOHMANN_BASIC_JSON_TPL> // NOLINT(cert-dcl58-cpp)
-{
-    std::size_t operator()(const nlohmann::NLOHMANN_BASIC_JSON_TPL& j) const
-    {
-        return nlohmann::detail::hash(j);
-    }
-};
-
-// specialization for std::less<value_t>
-template<>
-struct less< ::nlohmann::detail::value_t> // do not remove the space after '<', see https://github.com/nlohmann/json/pull/679
-{
-    /*!
-    @brief compare two value_t enum values
-    @since version 3.0.0
-    */
-    bool operator()(::nlohmann::detail::value_t lhs,
-                    ::nlohmann::detail::value_t rhs) const noexcept
-    {
-#if JSON_HAS_THREE_WAY_COMPARISON
-        return std::is_lt(lhs <=> rhs); // *NOPAD*
-#else
-        return ::nlohmann::detail::operator<(lhs, rhs);
-#endif
-    }
-};
-
-// C++20 prohibit function specialization in the std namespace.
-#ifndef JSON_HAS_CPP_20
-
-/// @brief exchanges the values of two JSON objects
-/// @sa https://json.nlohmann.me/api/basic_json/std_swap/
-NLOHMANN_BASIC_JSON_TPL_DECLARATION
-inline void swap(nlohmann::NLOHMANN_BASIC_JSON_TPL& j1, nlohmann::NLOHMANN_BASIC_JSON_TPL& j2) noexcept(  // NOLINT(readability-inconsistent-declaration-parameter-name, cert-dcl58-cpp)
-    is_nothrow_move_constructible<nlohmann::NLOHMANN_BASIC_JSON_TPL>::value&&                          // NOLINT(misc-redundant-expression)
-    is_nothrow_move_assignable<nlohmann::NLOHMANN_BASIC_JSON_TPL>::value)
-{
-    j1.swap(j2);
-}
-
-#endif
-
-}  // namespace std
-
-#if JSON_USE_GLOBAL_UDLS
-    using nlohmann::literals::json_literals::operator "" _json; // NOLINT(misc-unused-using-decls,google-global-names-in-headers)
-    using nlohmann::literals::json_literals::operator "" _json_pointer; //NOLINT(misc-unused-using-decls,google-global-names-in-headers)
-#endif
-
-// #include <nlohmann/detail/macro_unscope.hpp>
-//     __ _____ _____ _____
-//  __|  |   __|     |   | |  JSON for Modern C++
-// |  |  |__   |  |  | | | |  version 3.11.2
-// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
-//
-// SPDX-FileCopyrightText: 2013-2022 Niels Lohmann <https://nlohmann.me>
-// SPDX-License-Identifier: MIT
-
-
-
-// restore clang diagnostic settings
-#if defined(__clang__)
-    #pragma clang diagnostic pop
-#endif
-
-// clean up
-#undef JSON_ASSERT
-#undef JSON_INTERNAL_CATCH
-#undef JSON_THROW
-#undef JSON_PRIVATE_UNLESS_TESTED
-#undef NLOHMANN_BASIC_JSON_TPL_DECLARATION
-#undef NLOHMANN_BASIC_JSON_TPL
-#undef JSON_EXPLICIT
-#undef NLOHMANN_CAN_CALL_STD_FUNC_IMPL
-#undef JSON_INLINE_VARIABLE
-#undef JSON_NO_UNIQUE_ADDRESS
-#undef JSON_DISABLE_ENUM_SERIALIZATION
-#undef JSON_USE_GLOBAL_UDLS
-
-#ifndef JSON_TEST_KEEP_MACROS
-    #undef JSON_CATCH
-    #undef JSON_TRY
-    #undef JSON_HAS_CPP_11
-    #undef JSON_HAS_CPP_14
-    #undef JSON_HAS_CPP_17
-    #undef JSON_HAS_CPP_20
-    #undef JSON_HAS_FILESYSTEM
-    #undef JSON_HAS_EXPERIMENTAL_FILESYSTEM
-    #undef JSON_HAS_THREE_WAY_COMPARISON
-    #undef JSON_HAS_RANGES
-    #undef JSON_USE_LEGACY_DISCARDED_VALUE_COMPARISON
-#endif
-
-// #include <nlohmann/thirdparty/hedley/hedley_undef.hpp>
-//     __ _____ _____ _____
-//  __|  |   __|     |   | |  JSON for Modern C++
-// |  |  |__   |  |  | | | |  version 3.11.2
-// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
-//
-// SPDX-FileCopyrightText: 2013-2022 Niels Lohmann <https://nlohmann.me>
-// SPDX-License-Identifier: MIT
-
-
-
-#undef JSON_HEDLEY_ALWAYS_INLINE
-#undef JSON_HEDLEY_ARM_VERSION
-#undef JSON_HEDLEY_ARM_VERSION_CHECK
-#undef JSON_HEDLEY_ARRAY_PARAM
-#undef JSON_HEDLEY_ASSUME
-#undef JSON_HEDLEY_BEGIN_C_DECLS
-#undef JSON_HEDLEY_CLANG_HAS_ATTRIBUTE
-#undef JSON_HEDLEY_CLANG_HAS_BUILTIN
-#undef JSON_HEDLEY_CLANG_HAS_CPP_ATTRIBUTE
-#undef JSON_HEDLEY_CLANG_HAS_DECLSPEC_DECLSPEC_ATTRIBUTE
-#undef JSON_HEDLEY_CLANG_HAS_EXTENSION
-#undef JSON_HEDLEY_CLANG_HAS_FEATURE
-#undef JSON_HEDLEY_CLANG_HAS_WARNING
-#undef JSON_HEDLEY_COMPCERT_VERSION
-#undef JSON_HEDLEY_COMPCERT_VERSION_CHECK
-#undef JSON_HEDLEY_CONCAT
-#undef JSON_HEDLEY_CONCAT3
-#undef JSON_HEDLEY_CONCAT3_EX
-#undef JSON_HEDLEY_CONCAT_EX
-#undef JSON_HEDLEY_CONST
-#undef JSON_HEDLEY_CONSTEXPR
-#undef JSON_HEDLEY_CONST_CAST
-#undef JSON_HEDLEY_CPP_CAST
-#undef JSON_HEDLEY_CRAY_VERSION
-#undef JSON_HEDLEY_CRAY_VERSION_CHECK
-#undef JSON_HEDLEY_C_DECL
-#undef JSON_HEDLEY_DEPRECATED
-#undef JSON_HEDLEY_DEPRECATED_FOR
-#undef JSON_HEDLEY_DIAGNOSTIC_DISABLE_CAST_QUAL
-#undef JSON_HEDLEY_DIAGNOSTIC_DISABLE_CPP98_COMPAT_WRAP_
-#undef JSON_HEDLEY_DIAGNOSTIC_DISABLE_DEPRECATED
-#undef JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_CPP_ATTRIBUTES
-#undef JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNKNOWN_PRAGMAS
-#undef JSON_HEDLEY_DIAGNOSTIC_DISABLE_UNUSED_FUNCTION
-#undef JSON_HEDLEY_DIAGNOSTIC_POP
-#undef JSON_HEDLEY_DIAGNOSTIC_PUSH
-#undef JSON_HEDLEY_DMC_VERSION
-#undef JSON_HEDLEY_DMC_VERSION_CHECK
-#undef JSON_HEDLEY_EMPTY_BASES
-#undef JSON_HEDLEY_EMSCRIPTEN_VERSION
-#undef JSON_HEDLEY_EMSCRIPTEN_VERSION_CHECK
-#undef JSON_HEDLEY_END_C_DECLS
-#undef JSON_HEDLEY_FLAGS
-#undef JSON_HEDLEY_FLAGS_CAST
-#undef JSON_HEDLEY_GCC_HAS_ATTRIBUTE
-#undef JSON_HEDLEY_GCC_HAS_BUILTIN
-#undef JSON_HEDLEY_GCC_HAS_CPP_ATTRIBUTE
-#undef JSON_HEDLEY_GCC_HAS_DECLSPEC_ATTRIBUTE
-#undef JSON_HEDLEY_GCC_HAS_EXTENSION
-#undef JSON_HEDLEY_GCC_HAS_FEATURE
-#undef JSON_HEDLEY_GCC_HAS_WARNING
-#undef JSON_HEDLEY_GCC_NOT_CLANG_VERSION_CHECK
-#undef JSON_HEDLEY_GCC_VERSION
-#undef JSON_HEDLEY_GCC_VERSION_CHECK
-#undef JSON_HEDLEY_GNUC_HAS_ATTRIBUTE
-#undef JSON_HEDLEY_GNUC_HAS_BUILTIN
-#undef JSON_HEDLEY_GNUC_HAS_CPP_ATTRIBUTE
-#undef JSON_HEDLEY_GNUC_HAS_DECLSPEC_ATTRIBUTE
-#undef JSON_HEDLEY_GNUC_HAS_EXTENSION
-#undef JSON_HEDLEY_GNUC_HAS_FEATURE
-#undef JSON_HEDLEY_GNUC_HAS_WARNING
-#undef JSON_HEDLEY_GNUC_VERSION
-#undef JSON_HEDLEY_GNUC_VERSION_CHECK
-#undef JSON_HEDLEY_HAS_ATTRIBUTE
-#undef JSON_HEDLEY_HAS_BUILTIN
-#undef JSON_HEDLEY_HAS_CPP_ATTRIBUTE
-#undef JSON_HEDLEY_HAS_CPP_ATTRIBUTE_NS
-#undef JSON_HEDLEY_HAS_DECLSPEC_ATTRIBUTE
-#undef JSON_HEDLEY_HAS_EXTENSION
-#undef JSON_HEDLEY_HAS_FEATURE
-#undef JSON_HEDLEY_HAS_WARNING
-#undef JSON_HEDLEY_IAR_VERSION
-#undef JSON_HEDLEY_IAR_VERSION_CHECK
-#undef JSON_HEDLEY_IBM_VERSION
-#undef JSON_HEDLEY_IBM_VERSION_CHECK
-#undef JSON_HEDLEY_IMPORT
-#undef JSON_HEDLEY_INLINE
-#undef JSON_HEDLEY_INTEL_CL_VERSION
-#undef JSON_HEDLEY_INTEL_CL_VERSION_CHECK
-#undef JSON_HEDLEY_INTEL_VERSION
-#undef JSON_HEDLEY_INTEL_VERSION_CHECK
-#undef JSON_HEDLEY_IS_CONSTANT
-#undef JSON_HEDLEY_IS_CONSTEXPR_
-#undef JSON_HEDLEY_LIKELY
-#undef JSON_HEDLEY_MALLOC
-#undef JSON_HEDLEY_MCST_LCC_VERSION
-#undef JSON_HEDLEY_MCST_LCC_VERSION_CHECK
-#undef JSON_HEDLEY_MESSAGE
-#undef JSON_HEDLEY_MSVC_VERSION
-#undef JSON_HEDLEY_MSVC_VERSION_CHECK
-#undef JSON_HEDLEY_NEVER_INLINE
-#undef JSON_HEDLEY_NON_NULL
-#undef JSON_HEDLEY_NO_ESCAPE
-#undef JSON_HEDLEY_NO_RETURN
-#undef JSON_HEDLEY_NO_THROW
-#undef JSON_HEDLEY_NULL
-#undef JSON_HEDLEY_PELLES_VERSION
-#undef JSON_HEDLEY_PELLES_VERSION_CHECK
-#undef JSON_HEDLEY_PGI_VERSION
-#undef JSON_HEDLEY_PGI_VERSION_CHECK
-#undef JSON_HEDLEY_PREDICT
-#undef JSON_HEDLEY_PRINTF_FORMAT
-#undef JSON_HEDLEY_PRIVATE
-#undef JSON_HEDLEY_PUBLIC
-#undef JSON_HEDLEY_PURE
-#undef JSON_HEDLEY_REINTERPRET_CAST
-#undef JSON_HEDLEY_REQUIRE
-#undef JSON_HEDLEY_REQUIRE_CONSTEXPR
-#undef JSON_HEDLEY_REQUIRE_MSG
-#undef JSON_HEDLEY_RESTRICT
-#undef JSON_HEDLEY_RETURNS_NON_NULL
-#undef JSON_HEDLEY_SENTINEL
-#undef JSON_HEDLEY_STATIC_ASSERT
-#undef JSON_HEDLEY_STATIC_CAST
-#undef JSON_HEDLEY_STRINGIFY
-#undef JSON_HEDLEY_STRINGIFY_EX
-#undef JSON_HEDLEY_SUNPRO_VERSION
-#undef JSON_HEDLEY_SUNPRO_VERSION_CHECK
-#undef JSON_HEDLEY_TINYC_VERSION
-#undef JSON_HEDLEY_TINYC_VERSION_CHECK
-#undef JSON_HEDLEY_TI_ARMCL_VERSION
-#undef JSON_HEDLEY_TI_ARMCL_VERSION_CHECK
-#undef JSON_HEDLEY_TI_CL2000_VERSION
-#undef JSON_HEDLEY_TI_CL2000_VERSION_CHECK
-#undef JSON_HEDLEY_TI_CL430_VERSION
-#undef JSON_HEDLEY_TI_CL430_VERSION_CHECK
-#undef JSON_HEDLEY_TI_CL6X_VERSION
-#undef JSON_HEDLEY_TI_CL6X_VERSION_CHECK
-#undef JSON_HEDLEY_TI_CL7X_VERSION
-#undef JSON_HEDLEY_TI_CL7X_VERSION_CHECK
-#undef JSON_HEDLEY_TI_CLPRU_VERSION
-#undef JSON_HEDLEY_TI_CLPRU_VERSION_CHECK
-#undef JSON_HEDLEY_TI_VERSION
-#undef JSON_HEDLEY_TI_VERSION_CHECK
-#undef JSON_HEDLEY_UNAVAILABLE
-#undef JSON_HEDLEY_UNLIKELY
-#undef JSON_HEDLEY_UNPREDICTABLE
-#undef JSON_HEDLEY_UNREACHABLE
-#undef JSON_HEDLEY_UNREACHABLE_RETURN
-#undef JSON_HEDLEY_VERSION
-#undef JSON_HEDLEY_VERSION_DECODE_MAJOR
-#undef JSON_HEDLEY_VERSION_DECODE_MINOR
-#undef JSON_HEDLEY_VERSION_DECODE_REVISION
-#undef JSON_HEDLEY_VERSION_ENCODE
-#undef JSON_HEDLEY_WARNING
-#undef JSON_HEDLEY_WARN_UNUSED_RESULT
-#undef JSON_HEDLEY_WARN_UNUSED_RESULT_MSG
-#undef JSON_HEDLEY_FALL_THROUGH
-
-
-
-#endif  // INCLUDE_NLOHMANN_JSON_HPP_
diff --git a/cpp/scripts/build-ext b/cpp/scripts/build-ext
new file mode 100755
index 00000000..b3595953
--- /dev/null
+++ b/cpp/scripts/build-ext
@@ -0,0 +1,122 @@
+#!/usr/bin/env bash
+
+set -e
+
+ME=$(basename $0)
+MYDIR=$(cd $(dirname $0)/.. && pwd)
+
+###############################################################################
+#
+# Minimal checks
+#
+###############################################################################
+[ -z "$1" ] && echo "$ME: missing directory" && exit 1
+[ ! -d "$1" ] && echo "$ME: invalid directory: $1" && exit 1
+
+SRCDIR="$1"
+shift
+
+while ((${#1})); do
+    case "$1" in
+        --src-dir=*)
+        SUBDIR="${1##--src-dir=}"
+        SRCDIR="$SRCDIR/$SUBDIR"
+        shift
+        ;;
+        *)
+        break
+        ;;
+    esac
+done
+
+###############################################################################
+#
+# Compiler setup
+#
+###############################################################################
+BUILDROOT=$MYDIR/build/root
+CC=
+CFLAGS=
+CXX=
+CXXFLAGS=$CFLAGS
+CPATH=$BUILDROOT/include
+LIBRARY_PATH=$BUILDROOT/lib
+LD_LIBRARY_PATH=$BUILDROOT/lib
+PKG_CONFIG_PATH=$LIBRARY_PATH/pkgconfig
+
+#CCACHE=$(which ccache || true)
+
+# if [ -n "$CCACHE" ]; then
+#     CC="$CCACHE $CC"
+#     CXX="$CCACHE $CXX"
+# fi
+
+export CC CFLAGS CXX CXXFLAGS CPATH LIBRARY_PATH LD_LIBRARY_PATH
+
+###############################################################################
+#
+# Parallel compilation setup
+#
+###############################################################################
+MAKEARGS=
+CMAKEARGS=
+
+if [ -n "$NPROCS" ]; then
+    CMAKEARGS="--parallel $NPROCS"
+    MAKEARGS="-j$NPROCS"
+else
+    CMAKEARGS="--parallel"
+fi
+
+###############################################################################
+#
+# Project build
+#
+###############################################################################
+PROJECT=$(basename $SRCDIR)
+BUILDDIR=$MYDIR/build/$PROJECT
+
+mkdir -p $LIBRARY_PATH
+rm -rf $BUILDDIR && mkdir -p $BUILDDIR
+
+if [ -f $SRCDIR/CMakeLists.txt ]; then
+    cmake \
+        -DCMAKE_PREFIX_PATH=$BUILDROOT \
+        -DCMAKE_INSTALL_PREFIX=$BUILDROOT \
+        -DCMAKE_TOOLCHAIN_FILE=$MYDIR/cmake/toolchains/ext.cmake \
+        -S $SRCDIR -B $BUILDDIR \
+        "$@"
+    cmake --build $BUILDDIR $CMAKEARGS
+    cmake --install $BUILDDIR
+elif [ -f $SRCDIR/meson.build ]; then
+    cd $BUILDDIR
+    meson \
+        --prefix=$BUILDROOT \
+        --pkg-config-path=$BUILDROOT \
+        --cmake-prefix-path=$BUILDROOT \
+        "$@" \
+        . $SRCDIR
+    meson install
+elif [ -x $SRCDIR/configure ]; then
+    cd $BUILDDIR
+    $SRCDIR/configure \
+        --prefix=$BUILDROOT \
+        --enable-shared \
+        "$@"
+    make $MAKEARGS
+    make install
+elif [ -x $SRCDIR/config ]; then
+    cd $BUILDDIR
+    $SRCDIR/config --prefix=$BUILDROOT "$@"
+    make $MAKEARGS
+    make install
+elif [ -f $SRCDIR/Makefile ]; then
+    cd $SRCDIR
+    make $MAKEARGS
+    make prefix=$BUILDROOT install
+else
+    echo "$ME: don't know how to build $SRCDIR"
+    exit 1
+fi
+
+rm -rf $BUILDDIR
diff --git a/cpp/scripts/build-externals b/cpp/scripts/build-externals
new file mode 100755
index 00000000..42ef6a78
--- /dev/null
+++ b/cpp/scripts/build-externals
@@ -0,0 +1,172 @@
+#!/usr/bin/env bash
+
+###############################################################################
+#
+# Barebones dependency installer
+#
+###############################################################################
+set -e
+trap "exit 1" TERM
+
+ME=$(basename $0)
+MYDIR=$(cd $(dirname $0)/.. && pwd)
+MYPID=$$
+
+BUILDER=$MYDIR/scripts/build-ext
+
+EXTDIR=$MYDIR/ext
+DLFILE=$EXTDIR/.downloaded
+INSTFILE=$EXTDIR/.installed
+TMPDIR=$EXTDIR/tmp
+ARCDIR=$EXTDIR/archives
+
+function error() {
+    echo "$@" >&2
+    kill -TERM $MYPID
+    exit 1
+}
+
+function clean_tmp() {
+    rm -rf $TMPDIR && mkdir -p $TMPDIR
+}
+
+function get_unique() {
+    local WHERE=$1
+    local TYPE=$2
+
+    local COUNT=$(find $WHERE -mindepth 1 -maxdepth 1 -type $TYPE | wc -l)
+
+    [ "$COUNT" -ne "1" ] && error "no unique entry of type $TYPE in $WHERE"
+
+    local ENTRY=$(find $WHERE -mindepth 1 -maxdepth 1 -type $TYPE)
+
+    echo $ENTRY
+}
+
+function get_md5() {
+    local WHAT=$1
+    local MD5
+
+    case $(uname -s) in
+        Darwin)
+        MD5=$(md5 -qs "$WHAT")
+        ;;
+        *)
+        MD5=$(echo -n "$WHAT" | md5sum | cut -d ' ' -f 1)
+        ;;
+    esac
+
+    echo $MD5
+}
+
+function download() {
+    local PKG=$1
+
+    local MD5=$(get_md5 "$PKG")
+    local ARCHIVE=$(grep $MD5 $DLFILE | cut -d ' ' -f 2)
+
+    if [ -z "$ARCHIVE" ]; then
+        clean_tmp
+
+        (cd $TMPDIR && curl -LJO $PKG)
+
+        mkdir -p $ARCDIR
+
+        ARCHIVE=$(get_unique $TMPDIR f)
+
+        mv $ARCHIVE $ARCDIR
+
+        ARCHIVE=$(basename $ARCHIVE)
+        echo "$MD5 $ARCHIVE" >> $DLFILE
+    fi
+
+    echo $ARCHIVE
+}
+
+function extract() {
+    local ARCHIVE=$1
+
+    local ARCFILE=$ARCDIR/$ARCHIVE
+    local TAROPTS
+
+    case $(uname -s) in
+        Darwin)
+        TAROPTS=xf
+        ;;
+        *)
+        TAROPTS=xaf
+        ;;
+    esac
+
+    clean_tmp
+
+    if [[ "$ARCFILE" =~ \.zip$ ]]; then
+        (cd $TMPDIR && unzip -q $ARCFILE)
+    elif [[ "$ARCFILE" =~ \.tar\.(gz|bz2|xz)$ ]]; then
+        (cd $TMPDIR && tar $TAROPTS $ARCFILE)
+    else
+        error "unhandled archive format $ARCHIVE"
+    fi
+
+    DIR=$(get_unique $TMPDIR d)
+
+    echo $DIR
+}
+
+function build() {
+    local URL=$1
+    shift
+
+    local ARCHIVE=$(download $URL)
+    local INSTALLED=$(grep $ARCHIVE $INSTFILE)
+
+    if [ -z "$INSTALLED" ]; then
+        local DEPDIR=$(extract $ARCHIVE)
+
+        echo "building from $URL"
+
+        $BUILDER $DEPDIR "$@"
+
+        echo $ARCHIVE >> $INSTFILE
+    else
+        echo "skipping already installed $ARCHIVE from $URL"
+    fi
+}
+
+function build_list() {
+    local EXTFILE=$1
+    local -a SPEC=()
+
+    while read LINE; do
+        [[ "$LINE" =~ ^([[:space:]]*(#.*)?)?$ ]] && continue
+
+        build $LINE
+    done < $EXTFILE
+}
+
+mkdir -p $EXTDIR
+touch $DLFILE $INSTFILE
+
+[ -z "$1" ] && echo "usage: $ME FILE|URL" && exit 1
+
+WHAT=$1
+shift
+
+if [ -f $WHAT ]; then
+    # Assume a dependency list file
+    if [ -n "$1" ]; then
+        # Short keyword to easily select something in the list file
+        LINE=$(grep "$1" $WHAT)
+
+        if [ -n "$LINE" ]; then
+            build $LINE
+        fi
+    else
+        build_list $WHAT
+    fi
+else
+    # Assume a URL
+    build $WHAT "$@"
+fi
+
+exit 0
diff --git a/cpp/src/lib/cucumber-messages/CMakeLists.txt b/cpp/src/lib/cucumber-messages/CMakeLists.txt
index 783b8720..70193a89 100644
--- a/cpp/src/lib/cucumber-messages/CMakeLists.txt
+++ b/cpp/src/lib/cucumber-messages/CMakeLists.txt
@@ -23,6 +23,12 @@ target_include_directories(
         ${CMAKE_CURRENT_SOURCE_DIR}
 )
 
+target_link_libraries(
+    cucumber-messages
+    PUBLIC
+        nlohmann_json::nlohmann_json
+)
+
 set_target_properties(
     cucumber-messages
     PROPERTIES
diff --git a/cpp/src/lib/cucumber-messages/cucumber/messages/utils.hpp b/cpp/src/lib/cucumber-messages/cucumber/messages/utils.hpp
index 16d2f215..7d9312e2 100644
--- a/cpp/src/lib/cucumber-messages/cucumber/messages/utils.hpp
+++ b/cpp/src/lib/cucumber-messages/cucumber/messages/utils.hpp
@@ -71,7 +71,7 @@ to_string(std::ostream& os, P&& prefix, T&& opt)
     apply_if(
         opt,
         [&](const auto& v) {
-            using vtype = std::remove_cvref_t<decltype(v)>;
+            using vtype = std::decay_t<decltype(v)>;
 
             if constexpr (is_container_v<std::vector, vtype>) {
                 os << prefix << '[';
@@ -95,7 +95,7 @@ to_json(json& j, K&& key, T&& opt)
     apply_if(
         opt,
         [&](const auto& v) {
-            using vtype = std::remove_cvref_t<decltype(v)>;
+            using vtype = std::decay_t<decltype(v)>;
 
             if constexpr (std::is_enum_v<vtype>) {
                 j[key] = to_string(v);

From d428f1c5e57a5c124dacee8d8d9f4f23a6447932 Mon Sep 17 00:00:00 2001
From: Remy Chibois <remy@chybz.net>
Date: Wed, 31 May 2023 11:50:02 +0200
Subject: [PATCH 21/26] chore: initial license and Dockerfile

---
 CHANGELOG.md    |  2 ++
 README.md       |  1 +
 cpp/Dockerfile  | 34 ++++++++++++++++++++++++++++++++++
 cpp/LICENSE     | 21 +++++++++++++++++++++
 docker-bake.hcl | 17 +++++++++++++++++
 5 files changed, 75 insertions(+)
 create mode 100644 cpp/Dockerfile
 create mode 100644 cpp/LICENSE

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3d3308ee..52bcdd99 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,8 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/)
 and this project adheres to [Semantic Versioning](http://semver.org/).
 
 ## [Unreleased]
+### Added
+- Added C++ implementation ([#152](https://github.com/cucumber/messages/pull/152))
 
 ## [22.0.0] - 2023-04-06
 ### Added
diff --git a/README.md b/README.md
index 7e526eb2..88904605 100644
--- a/README.md
+++ b/README.md
@@ -32,6 +32,7 @@ Each message in a message stream is of type [Envelope](messages.md#envelope).
 Each subdirectory defines language-specific implementations of these messages,
 generated from the JSON schemas. The current implementation are:
 - .Net
+- C++
 - Elixir
 - Go
 - Java
diff --git a/cpp/Dockerfile b/cpp/Dockerfile
new file mode 100644
index 00000000..04c44fd8
--- /dev/null
+++ b/cpp/Dockerfile
@@ -0,0 +1,34 @@
+#syntax=docker/dockerfile:1.4
+
+# Base image
+FROM debian:bullseye-slim AS cpp
+
+RUN <<EOF
+# Install/update tools. Don't forget to clean cache
+apt-get update
+apt-get install -y \
+    bash \
+    curl \
+    build-essential \
+    cmake
+rm -rf /var/lib/apt/lists/*
+EOF
+
+
+WORKDIR /cucumber
+
+# Dummy stage for generated code, overriden in main build
+FROM scratch AS schema-codegen
+
+FROM cpp AS with-dependencies
+
+COPY --link cmake scripts deps.txt Makefile .
+# verify loads additional dependencies without running the tests (they aren't copied in yet)
+RUN make install-deps
+
+FROM cpp AS tested
+
+COPY --link . .
+COPY --link --from=with-dependencies build/root build/root
+#COPY --link --from=schema-codegen / src/generated/java/io/cucumber/messages/types
+
diff --git a/cpp/LICENSE b/cpp/LICENSE
new file mode 100644
index 00000000..725ba9f4
--- /dev/null
+++ b/cpp/LICENSE
@@ -0,0 +1,21 @@
+The MIT License (MIT)
+
+Copyright (c) Cucumber Ltd
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
diff --git a/docker-bake.hcl b/docker-bake.hcl
index a5600dc0..1dbab71b 100644
--- a/docker-bake.hcl
+++ b/docker-bake.hcl
@@ -31,6 +31,23 @@ target "elixir-test" {
   target = "tested"
 }
 
+target "cpp-codegen" {
+  context = "jsonschema"
+  target = "output"
+  args = {
+    LANGUAGE = "cpp",
+  }
+  output = ["cpp/"]
+}
+
+target "cpp-test" {
+  context = "cpp"
+  target = "tested"
+  contexts = {
+    schema-codegen = "target:cpp-codegen",
+  }
+}
+
 target "go-codegen" {
   context = "jsonschema"
   target = "output"

From abd3ae137e8d2fcaa99795bf012df22c548bfcfe Mon Sep 17 00:00:00 2001
From: Remy Chibois <remy@chybz.net>
Date: Wed, 31 May 2023 12:04:02 +0200
Subject: [PATCH 22/26] chore: with-dependencies stage build ok

---
 cpp/Dockerfile | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/cpp/Dockerfile b/cpp/Dockerfile
index 04c44fd8..39f12155 100644
--- a/cpp/Dockerfile
+++ b/cpp/Dockerfile
@@ -9,6 +9,7 @@ apt-get update
 apt-get install -y \
     bash \
     curl \
+    unzip \
     build-essential \
     cmake
 rm -rf /var/lib/apt/lists/*
@@ -22,7 +23,10 @@ FROM scratch AS schema-codegen
 
 FROM cpp AS with-dependencies
 
-COPY --link cmake scripts deps.txt Makefile .
+COPY --link cmake cmake
+COPY --link scripts scripts
+COPY --link Makefile deps.txt .
+
 # verify loads additional dependencies without running the tests (they aren't copied in yet)
 RUN make install-deps
 

From 6a97af729c4579618532b91e4c13a46afd89bc3e Mon Sep 17 00:00:00 2001
From: Remy Chibois <remy@chybz.net>
Date: Wed, 31 May 2023 18:22:36 +0200
Subject: [PATCH 23/26] chore: added basic README

---
 cpp/README.md | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)
 create mode 100644 cpp/README.md

diff --git a/cpp/README.md b/cpp/README.md
new file mode 100644
index 00000000..139eeb6c
--- /dev/null
+++ b/cpp/README.md
@@ -0,0 +1,25 @@
+# Cucumber Messages for C++ (JSON schema)
+
+## Requirements
+
+This library requires:
+- A C++ 17 compiler (tested with GCC 10, 12)
+- [JSON for Modern C++](https://json.nlohmann.me/)
+
+## Installing from Git repository
+
+```shell
+$ git clone https://github.com/cucumber/messages
+$ cd messages/cpp
+$ cmake -S . -B build
+$ cmake --build build
+$ cmake --install build
+```
+
+## CMake integration
+
+```cmake
+find_package(cucumber-messages CONFIG REQUIRED)
+
+target_link_libraries(mylib PRIVATE cucumber::cucumber-messages)
+```

From e9585f713ae0bf188f7c568adbcb69421b12e5b3 Mon Sep 17 00:00:00 2001
From: Remy Chibois <remy@chybz.net>
Date: Wed, 31 May 2023 18:34:20 +0200
Subject: [PATCH 24/26] chore: added cpp to bake targets

---
 docker-bake.hcl | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/docker-bake.hcl b/docker-bake.hcl
index 1dbab71b..02e5d2ad 100644
--- a/docker-bake.hcl
+++ b/docker-bake.hcl
@@ -7,6 +7,7 @@ group "default" {
 
 group "codegen" {
   targets = [
+    "cpp-codegen",
     "go-codegen",
     "java-codegen",
     "javascript-codegen",
@@ -18,6 +19,7 @@ group "codegen" {
 
 group "test" {
   targets = [
+    "cpp-test",
     "go-test",
     "java-test",
     "javascript-test",

From 8ecd9cbae04c1c415173336b3d437892a6a8e93a Mon Sep 17 00:00:00 2001
From: Remy Chibois <remy@chybz.net>
Date: Wed, 31 May 2023 18:56:20 +0200
Subject: [PATCH 25/26] chore: adding C++ workflow

---
 .github/workflows/test-cpp.yml | 33 +++++++++++++++++++++++++++++++++
 1 file changed, 33 insertions(+)
 create mode 100644 .github/workflows/test-cpp.yml

diff --git a/.github/workflows/test-cpp.yml b/.github/workflows/test-cpp.yml
new file mode 100644
index 00000000..809449eb
--- /dev/null
+++ b/.github/workflows/test-cpp.yml
@@ -0,0 +1,33 @@
+name: test-cpp
+
+on:
+  push:
+    branches:
+      - main
+      - renovate/**
+  pull_request:
+    branches:
+      - main
+  workflow_call:
+
+jobs:
+  test-cpp:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: install cmake and libraries
+        run: |
+          sudo apt-get update
+          sudo apt-get install ninja-build cmake
+          sudo apt-get install nlohmann-json3-dev
+          ninja --version
+          cmake --version
+          gcc --version
+
+      - name: configure and build
+        run: |
+          cmake -S . -B build
+          cmake --build build
+        working-directory: cpp

From 0fae429b1c9d03796737d1e5c5554cf4896a9aca Mon Sep 17 00:00:00 2001
From: Remy Chibois <rcs@weez-u-welding.com>
Date: Thu, 1 Jun 2023 10:17:02 +0200
Subject: [PATCH 26/26] chore: added cpp to languages

---
 Makefile | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/Makefile b/Makefile
index 7c8c61d0..11a201dd 100644
--- a/Makefile
+++ b/Makefile
@@ -24,7 +24,7 @@ schemas = \
 	./jsonschema/UndefinedParameterType.json \
 	./jsonschema/Envelope.json
 
-languages = go java javascript perl php ruby
+languages = cpp go java javascript perl php ruby
 
 .DEFAULT_GOAL = help
 
@@ -63,4 +63,4 @@ generate-%: %
 
 clean-%: %
 	cd $< && make clean
-.PHONY: clean-%
\ No newline at end of file
+.PHONY: clean-%