Add built-in "__FILE_NAME_HASH__" and "__FILE_STEM_HASH__" preprocess…

…or macros
crosire · Sep 22, 2023 · 5018887 · 5018887
1 parent 5c8b8f0
commit 5018887
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Showing 3 changed files with 14 additions and 2 deletions.
diff --git a/source/effect_parser_stmt.cpp b/source/effect_parser_stmt.cpp
@@ -7,10 +7,10 @@
 #include "effect_parser.hpp"
 #include "effect_codegen.hpp"
 #include <cctype> // std::toupper
+#include <limits>
 #include <cassert>
 #include <functional>
 #include <string_view>
-#include <limits>
 
 struct on_scope_exit
 {

diff --git a/source/effect_preprocessor.cpp b/source/effect_preprocessor.cpp
@@ -1047,12 +1047,24 @@ bool reshadefx::preprocessor::evaluate_identifier_as_macro()
 		push(escape_string(file_stem.u8string()));
 		return true;
 	}
+	if (_token.literal_as_string == "__FILE_STEM_HASH__")
+	{
+		const std::filesystem::path file_stem = std::filesystem::u8path(_token.location.source).stem();
+		push(std::to_string(std::hash<std::string>()(file_stem.u8string()) & 0xFFFFFFFF));
+		return true;
+	}
 	if (_token.literal_as_string == "__FILE_NAME__")
 	{
 		const std::filesystem::path file_name = std::filesystem::u8path(_token.location.source).filename();
 		push(escape_string(file_name.u8string()));
 		return true;
 	}
+	if (_token.literal_as_string == "__FILE_NAME_HASH__")
+	{
+		const std::filesystem::path file_name = std::filesystem::u8path(_token.location.source).filename();
+		push(std::to_string(std::hash<std::string>()(file_name.u8string()) & 0xFFFFFFFF));
+		return true;
+	}
 
 	const auto it = _macros.find(_token.literal_as_string);
 	if (it == _macros.end())

diff --git a/source/effect_token.hpp b/source/effect_token.hpp
@@ -5,9 +5,9 @@
 
 #pragma once
 
-#include <cstdint>
 #include <string>
 #include <vector>
+#include <cstdint>
 
 namespace reshadefx
 {