#181 support tag for scalars

Makefile

@@ -1,4 +1,4 @@
-.PHONY: update-version-macros CHANGELOG.md update-version fkYAML.natvis
+.PHONY: update-version-macros CHANGELOG.md update-version examples fkYAML.natvis
 
 #################
 #   variables   #
@@ -96,6 +96,20 @@ update-params-for-natvis:
 fkYAML.natvis: update-params-for-natvis
 	@$(MAKE) -C ./tool/natvis_generator generate
 
+#####################
+#   Documentation   #
+#####################
+
+examples:
+	cmake -B build_examples -S . -DCMAKE_BUILD_TYPE=Debug -DFK_YAML_BUILD_EXAMPLES=ON
+	cmake --build build_examples --config Debug
+
+build-docs: examples
+	@$(MAKE) -C ./docs/mkdocs build
+
+serve-docs: examples
+	@$(MAKE) -C serve
+
 ###############
 #   Version   #
 ###############
@@ -169,5 +183,6 @@ clean:
 		build_clang_sanitizers \
 		build_clang_tidy \
 		build_coverage \
+		build_examples \
 		build_iwyu \
 		build_valgrind

docs/examples/ex_basic_node_add_tag_name.cpp

@@ -0,0 +1,18 @@
+#include <iostream>
+#include <fkYAML/node.hpp>
+
+int main()
+{
+    // create a YAML node.
+    fkyaml::node n = 123;
+
+    // set a tag name to the node.
+    n.add_tag_name("!!int");
+    std::cout << n.get_tag_name() << std::endl;
+
+    // overwrite it with a new one.
+    n.add_tag_name("!!foo");
+    std::cout << n.get_tag_name() << std::endl;
+
+    return 0;
+}

docs/examples/ex_basic_node_add_tag_name.output

@@ -0,0 +1,2 @@
+!!int
+!!foo

docs/examples/ex_basic_node_get_anchor_name.cpp

@@ -16,7 +16,7 @@ int main()
         std::cout << e.what() << std::endl;
     }
 
-    // add an anchor name to the node.
+    // set an anchor name to the node.
     n.add_anchor_name("anchor");
     std::cout << n.get_anchor_name() << std::endl;
 

docs/examples/ex_basic_node_get_tag_name.cpp

@@ -0,0 +1,24 @@
+#include <iostream>
+#include <fkYAML/node.hpp>
+
+int main()
+{
+    // create a YAML node.
+    fkyaml::node n = 123;
+
+    // try to get a tag name before any tag name has been set.
+    try
+    {
+        std::cout << n.get_tag_name() << std::endl;
+    }
+    catch (const fkyaml::exception& e)
+    {
+        std::cout << e.what() << std::endl;
+    }
+
+    // set a tag name to the node.
+    n.add_tag_name("!!int");
+    std::cout << n.get_tag_name() << std::endl;
+
+    return 0;
+}

docs/examples/ex_basic_node_get_tag_name.output

@@ -0,0 +1,2 @@
+No tag name has been set.
+!!int

docs/examples/ex_basic_node_has_tag_name.cpp

@@ -0,0 +1,19 @@
+#include <iostream>
+#include <fkYAML/node.hpp>
+
+int main()
+{
+    // create a YAML node.
+    fkyaml::node n = {{"foo", true}};
+
+    // check if the node has a tag name.
+    std::cout << std::boolalpha << n.has_tag_name() << std::endl;
+
+    // set a tag name.
+    n.add_tag_name("!!map");
+
+    // check if the node has a tag name again.
+    std::cout << std::boolalpha << n.has_tag_name() << std::endl;
+
+    return 0;
+}

docs/examples/ex_basic_node_has_tag_name.output

@@ -0,0 +1,2 @@
+false
+true

docs/mkdocs/docs/api/basic_node/add_tag_name.md

@@ -0,0 +1,32 @@
+<small>Defined in header [`<fkYAML/node.hpp>`](https://github.com/fktn-k/fkYAML/blob/develop/include/fkYAML/node.hpp)</small>
+
+# <small>fkyaml::basic_node::</small>add_tag_name
+
+```cpp
+void add_tag_name(const std::string& tag_name);
+void add_tag_name(std::string&& tag_name);
+```
+
+Adds a tag name to the YAML node.  
+If the basic_node has already had any tag name, the new tag name overwrites the old one.
+
+## **Parameters**
+
+***`tag_name`*** [in]
+:   A tag name. This should not be empty.
+
+???+ Example
+
+    ```cpp
+    --8<-- "examples/ex_basic_node_add_tag_name.cpp"
+    ```
+
+    output:
+    ```bash
+    --8<-- "examples/ex_basic_node_add_tag_name.output"
+    ```
+
+## **See Also**
+
+* [basic_node](index.md)
+* [get_tag_name](get_tag_name.md)

docs/mkdocs/docs/api/basic_node/get_anchor_name.md

@@ -6,7 +6,7 @@
 const std::string& get_anchor_name() const;
 ```
 
-Gets the anchor name associated to the YAML node.  
+Gets the anchor name associated with the YAML node.  
 Some anchor name must be set before calling this API.  
 Calling [`has_anchor_name`](has_anchor_name.md) to see if the node has any anchor name beforehand.
 
@@ -29,4 +29,4 @@ If no anchor name has been set, an [`fkyaml::exception`](../exception/index.md)
 ## **See Also**
 
 * [basic_node](index.md)
-* [set_anchor_name](get_anchor_name.md)
+* [has_anchor_name](has_anchor_name.md)

docs/mkdocs/docs/api/basic_node/get_tag_name.md

@@ -0,0 +1,32 @@
+<small>Defined in header [`<fkYAML/node.hpp>`](https://github.com/fktn-k/fkYAML/blob/develop/include/fkYAML/node.hpp)</small>
+
+# <small>fkyaml::basic_node::</small>get_tag_name
+
+```cpp
+const std::string& get_tag_name() const;
+```
+
+Gets the tag name associated to the YAML node.  
+Some tag name must be set before calling this API.  
+Calling [`has_tag_name`](has_tag_name.md) to see if the node has any tag name beforehand.
+
+## **Return Value**
+
+The tag name associated to the node.  
+If no tag name has been set, an [`fkyaml::exception`](../exception/index.md) will be thrown.
+
+???+ Example
+
+    ```cpp
+    --8<-- "examples/ex_basic_node_get_tag_name.cpp"
+    ```
+
+    output:
+    ```bash
+    --8<-- "examples/ex_basic_node_get_tag_name.output"
+    ```
+
+## **See Also**
+
+* [basic_node](index.md)
+* [has_tag_name](has_tag_name.md)

docs/mkdocs/docs/api/basic_node/has_tag_name.md

@@ -0,0 +1,29 @@
+<small>Defined in header [`<fkYAML/node.hpp>`](https://github.com/fktn-k/fkYAML/blob/develop/include/fkYAML/node.hpp)</small>
+
+# <small>fkyaml::basic_node::</small>has_tag_name
+
+```cpp
+bool has_tag_name() const noexcept;
+```
+
+Check if the YAML node has a tag name.  
+
+## **Return Value**
+
+`true` if the YAML node has a tag name, `false` otherwise.  
+
+???+ Example
+
+    ```cpp
+    --8<-- "examples/ex_basic_node_has_tag_name.cpp"
+    ```
+
+    output:
+    ```bash
+    --8<-- "examples/ex_basic_node_has_tag_name.output"
+    ```
+
+## **See Also**
+
+* [basic_node](index.md)
+* [add_tag_name](add_tag_name.md)

docs/mkdocs/mkdocs.yml

@@ -106,6 +106,7 @@ nav:
           - (destructor): api/basic_node/destructor.md
           - operator=: api/basic_node/operator=.md
           - add_anchor_name: api/basic_node/add_anchor_name.md
+          - add_tag_name: api/basic_node/add_tag_name.md
           - alias_of: api/basic_node/alias_of.md
           - at: api/basic_node/at.md
           - begin: api/basic_node/begin.md
@@ -117,10 +118,12 @@ nav:
           - end: api/basic_node/end.md
           - float_number_type: api/basic_node/float_number_type.md
           - get_anchor_name: api/basic_node/get_anchor_name.md
+          - get_tag_name: api/basic_node/get_tag_name.md
           - get_value: api/basic_node/get_value.md
           - get_value_ref: api/basic_node/get_value_ref.md
           - get_yaml_version: api/basic_node/get_yaml_version.md
           - has_anchor_name: api/basic_node/has_anchor_name.md
+          - has_tag_name: api/basic_node/has_tag_name.md
           - integer_type: api/basic_node/integer_type.md
           - is_alias: api/basic_node/is_alias.md
           - is_anchor: api/basic_node/is_anchor.md

include/fkYAML/detail/directive_set.hpp

@@ -0,0 +1,48 @@
+///  _______   __ __   __  _____   __  __  __
+/// |   __| |_/  |  \_/  |/  _  \ /  \/  \|  |     fkYAML: A C++ header-only YAML library
+/// |   __|  _  < \_   _/|  ___  |    _   |  |___  version 0.3.3
+/// |__|  |_| \__|  |_|  |_|   |_|___||___|______| https://github.com/fktn-k/fkYAML
+///
+/// SPDX-FileCopyrightText: 2023-2024 Kensuke Fukutani <fktn.dev@gmail.com>
+/// SPDX-License-Identifier: MIT
+///
+/// @file
+
+#ifndef FK_YAML_DETAIL_DIRECTIVE_SET_HPP_
+#define FK_YAML_DETAIL_DIRECTIVE_SET_HPP_
+
+#include <string>
+#include <map>
+
+#include <fkYAML/detail/macros/version_macros.hpp>
+#include <fkYAML/detail/types/yaml_version_t.hpp>
+
+/// @namespace fkyaml
+/// @brief namespace for fkYAML library.
+FK_YAML_NAMESPACE_BEGIN
+
+/// @namespace detail
+/// @brief namespace for internal implementaions of fkYAML library.
+namespace detail
+{
+
+/// @brief The set of directives for a YAML document.
+struct directive_set
+{
+    /// The YAML version used for the YAML document.
+    yaml_version_t version {yaml_version_t::VER_1_2};
+    /// Whether or not the YAML version has been specified.
+    bool is_version_specified {false};
+    /// The prefix of the primary handle.
+    std::string primary_handle_prefix {};
+    /// The prefix of the secondary handle.
+    std::string secondary_handle_prefix {};
+    /// The map of handle-prefix pairs.
+    std::map<std::string /*handle*/, std::string /*prefix*/> named_handle_map {};
+};
+
+} // namespace detail
+
+FK_YAML_NAMESPACE_END
+
+#endif /* FK_YAML_DETAIL_DIRECTIVE_SET_HPP_ */