Initial shaderlang commit

include/Nazara/Shader/ShaderLangLexer.hpp

@@ -0,0 +1,56 @@
+// Copyright (C) 2020 Jérôme Leclercq
+// This file is part of the "Nazara Engine - Renderer module"
+// For conditions of distribution and use, see copyright notice in Config.hpp
+
+#pragma once
+
+#ifndef NAZARA_SHADER_LANGLEXER_HPP
+#define NAZARA_SHADER_LANGLEXER_HPP
+
+#include <Nazara/Prerequisites.hpp>
+#include <Nazara/Shader/Config.hpp>
+#include <stdexcept>
+#include <string>
+#include <variant>
+#include <vector>
+
+namespace Nz::ShaderLang
+{
+	enum class TokenType
+	{
+#define NAZARA_SHADERLANG_TOKEN(X) X,
+
+#include <Nazara/Shader/ShaderLangTokenList.hpp>
+	};
+
+	struct Token
+	{
+		unsigned int column;
+		unsigned int line;
+		TokenType type;
+		std::variant<double, long long, std::string> data;
+	};
+
+	class BadNumber : public std::exception
+	{
+		using exception::exception;
+	};
+
+	class NumberOutOfRange : public std::exception
+	{
+		using exception::exception;
+	};
+
+	class UnrecognizedToken : public std::exception
+	{
+		using exception::exception;
+	};
+
+	NAZARA_SHADER_API std::vector<Token> Tokenize(const std::string_view& str);
+	NAZARA_SHADER_API const char* ToString(TokenType tokenType);
+	NAZARA_SHADER_API std::string ToString(const std::vector<Token>& tokens, bool pretty = true);
+}
+
+#include <Nazara/Shader/ShaderLangLexer.inl>
+
+#endif