ControlPathAnalyzer.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 "Visitor.hpp"
 
#include "CeresEngine/Foundation/Container/Stack.hpp"
 
namespace CeresEngine::ShaderCompiler {
 
    class ControlPathAnalyzer : private Visitor {
    private:
        Stack<bool> mReturnPathStack;
 
    public:
        void markControlPathsFromFunction(FunctionDeclaration& funcDeclaration);
 
    private:
        void pushReturnPath(bool returnPath);
        bool popReturnPath();
 
        void visitStatementList(const Vector<StatementPtr>& statements);
 
    private: // Visitor implementation
        DECLARATION_VISIT_PROC(CodeBlock);
 
        DECLARATION_VISIT_PROC(FunctionDeclaration);
        DECLARATION_VISIT_PROC(UniformBufferDeclaration);
 
        DECLARATION_VISIT_PROC(BufferDeclarationStatement);
        DECLARATION_VISIT_PROC(SamplerDeclarationStatement);
        DECLARATION_VISIT_PROC(VarDeclarationStatement);
        DECLARATION_VISIT_PROC(AliasDeclarationStatement);
        DECLARATION_VISIT_PROC(BasicDeclarationStatement);
 
        DECLARATION_VISIT_PROC(NullStatement);
        DECLARATION_VISIT_PROC(CodeBlockStatement);
        DECLARATION_VISIT_PROC(ForLoopStatement);
        DECLARATION_VISIT_PROC(WhileLoopStatement);
        DECLARATION_VISIT_PROC(DoWhileLoopStatement);
        DECLARATION_VISIT_PROC(IfStatement);
        DECLARATION_VISIT_PROC(ElseStatement);
        DECLARATION_VISIT_PROC(SwitchStatement);
        DECLARATION_VISIT_PROC(ExpressionStatement);
        DECLARATION_VISIT_PROC(ReturnStatement);
        DECLARATION_VISIT_PROC(CtrlTransferStatement);
    };
 
} // namespace CeresEngine::ShaderCompiler