Method evaluate_identifier_as_macro

source/effect_preprocessor.cpp:1109–1214

}

bool reshadefx::preprocessor::evaluate_identifier_as_macro()
{
	if (_token.literal_as_string == "__LINE__")
	{
		push(std::to_string(_token.location.line));
		return true;
	}
	if (_token.literal_as_string == "__FILE__")
	{
		push(escape_string(_token.location.source));
		return true;
	}
	if (_token.literal_as_string == "__FILE_STEM__")
	{
		const std::filesystem::path file_stem = std::filesystem::u8path(_token.location.source).stem();
		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 macro_it = _macros.find(_token.literal_as_string);
	if (macro_it == _macros.end())
		return false;

	if (!_input_stack.empty())
	{
		const std::unordered_set<std::string> &hidden_macros = _input_stack[_current_input_index].hidden_macros;
		if (hidden_macros.find(_token.literal_as_string) != hidden_macros.end())
			return false;
	}

	const location macro_location = _token.location;
	if (_recursion_count++ >= 256)
		return error(macro_location, "macro recursion too high"), false;

	std::vector<std::string> arguments;
	if (macro_it->second.is_function_like)
	{
		if (!accept(tokenid::parenthesis_open))
			return false; // Function like macro used without arguments, handle that like a normal identifier instead