GLSLPreProcessor.hpp

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//
//  CeresEngine - A game development framework
//
//  Created by Rogiel Sulzbach.
//  Copyright (c) 2018-2022 Rogiel Sulzbach. All rights reserved.
//
 
#pragma once
 
#include "CeresEngine/DataTypes.hpp"
 
#include "CeresEngine/Material/ShaderCompiler/Frontend/PreProcessor.hpp"
 
namespace CeresEngine::ShaderCompiler {
 
    class GLSLPreProcessor : public PreProcessor {
    private:
        bool mVersionDefined = false;
        Int32 mVersionNumber = 0;
 
    public:
        GLSLPreProcessor(IncludeHandler& includeHandler, Log* log = nullptr);
 
    private:
        bool onDefineMacro(const Macro& macro) override;
        bool onRedefineMacro(const Macro& macro, const Macro& previousMacro) override;
        bool onUndefineMacro(const Macro& macro) override;
        bool onSubstituteStdMacro(const Token& identifierToken, TokenPtrString& tokenString) override;
 
        void parseDirective(const String& directive, bool ignoreUnknown) override;
 
        void parseDirectiveVersion();
        void parseDirectiveExtension();
 
        bool verifyVersionNumber(const int* validVersions) const;
    };
 
} // namespace CeresEngine::ShaderCompiler