135 lines
4.9 KiB
C++
135 lines
4.9 KiB
C++
// Copyright (C) 2020 Jérôme Leclercq
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// This file is part of the "Nazara Engine - Shader generator"
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// For conditions of distribution and use, see copyright notice in Config.hpp
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#pragma once
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#ifndef NAZARA_SHADERAST_TRANSFORMVISITOR_HPP
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#define NAZARA_SHADERAST_TRANSFORMVISITOR_HPP
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#include <Nazara/Prerequisites.hpp>
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#include <Nazara/Shader/Config.hpp>
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#include <Nazara/Shader/Ast/AstCloner.hpp>
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#include <unordered_map>
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#include <unordered_set>
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#include <vector>
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namespace Nz::ShaderAst
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{
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class NAZARA_SHADER_API SanitizeVisitor final : AstCloner
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{
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public:
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struct Options;
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SanitizeVisitor() = default;
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SanitizeVisitor(const SanitizeVisitor&) = delete;
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SanitizeVisitor(SanitizeVisitor&&) = delete;
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~SanitizeVisitor() = default;
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inline StatementPtr Sanitize(const StatementPtr& statement, std::string* error = nullptr);
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StatementPtr Sanitize(const StatementPtr& statement, const Options& options, std::string* error = nullptr);
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SanitizeVisitor& operator=(const SanitizeVisitor&) = delete;
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SanitizeVisitor& operator=(SanitizeVisitor&&) = delete;
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struct Options
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{
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std::unordered_set<std::string> reservedIdentifiers;
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bool removeOptionDeclaration = true;
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};
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private:
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struct Identifier;
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const ExpressionType& CheckField(const ExpressionType& structType, const std::string* memberIdentifier, std::size_t remainingMembers, std::size_t* structIndices);
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using AstCloner::CloneExpression;
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ExpressionPtr Clone(AccessMemberIdentifierExpression& node) override;
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ExpressionPtr Clone(AssignExpression& node) override;
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ExpressionPtr Clone(BinaryExpression& node) override;
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ExpressionPtr Clone(CallFunctionExpression& node) override;
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ExpressionPtr Clone(CastExpression& node) override;
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ExpressionPtr Clone(ConditionalExpression& node) override;
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ExpressionPtr Clone(ConstantExpression& node) override;
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ExpressionPtr Clone(IdentifierExpression& node) override;
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ExpressionPtr Clone(IntrinsicExpression& node) override;
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ExpressionPtr Clone(SelectOptionExpression& node) override;
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ExpressionPtr Clone(SwizzleExpression& node) override;
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ExpressionPtr Clone(UnaryExpression& node) override;
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StatementPtr Clone(BranchStatement& node) override;
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StatementPtr Clone(ConditionalStatement& node) override;
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StatementPtr Clone(DeclareExternalStatement& node) override;
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StatementPtr Clone(DeclareFunctionStatement& node) override;
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StatementPtr Clone(DeclareOptionStatement& node) override;
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StatementPtr Clone(DeclareStructStatement& node) override;
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StatementPtr Clone(DeclareVariableStatement& node) override;
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StatementPtr Clone(ExpressionStatement& node) override;
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StatementPtr Clone(MultiStatement& node) override;
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inline const Identifier* FindIdentifier(const std::string_view& identifierName) const;
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Expression& MandatoryExpr(ExpressionPtr& node);
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Statement& MandatoryStatement(StatementPtr& node);
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void TypeMustMatch(ExpressionPtr& left, ExpressionPtr& right);
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void TypeMustMatch(const ExpressionType& left, const ExpressionType& right);
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void PushScope();
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void PopScope();
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std::size_t RegisterFunction(DeclareFunctionStatement* funcDecl);
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std::size_t RegisterIntrinsic(std::string name, IntrinsicType type);
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std::size_t RegisterOption(std::string name, ExpressionType type);
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std::size_t RegisterStruct(std::string name, StructDescription description);
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std::size_t RegisterVariable(std::string name, ExpressionType type);
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std::size_t ResolveStruct(const ExpressionType& exprType);
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std::size_t ResolveStruct(const IdentifierType& identifierType);
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std::size_t ResolveStruct(const StructType& structType);
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std::size_t ResolveStruct(const UniformType& uniformType);
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ExpressionType ResolveType(const ExpressionType& exprType);
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void SanitizeIdentifier(std::string& identifier);
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void Validate(CallFunctionExpression& node, const DeclareFunctionStatement* referenceDeclaration);
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void Validate(IntrinsicExpression& node);
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struct Identifier
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{
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enum class Type
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{
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Alias,
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Function,
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Intrinsic,
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Option,
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Struct,
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Variable
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};
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std::string name;
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std::size_t index;
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Type type;
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};
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std::unordered_map<std::string /*functionName*/, std::pair<const DeclareFunctionStatement*, std::size_t>> m_functionDeclarations;
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std::vector<Identifier> m_identifiersInScope;
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std::vector<DeclareFunctionStatement*> m_functions;
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std::vector<IntrinsicType> m_intrinsics;
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std::vector<ExpressionType> m_options;
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std::vector<StructDescription> m_structs;
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std::vector<ExpressionType> m_variableTypes;
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std::vector<std::size_t> m_scopeSizes;
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struct Context;
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Context* m_context;
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};
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inline StatementPtr Sanitize(const StatementPtr& ast, std::string* error = nullptr);
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inline StatementPtr Sanitize(const StatementPtr& ast, const SanitizeVisitor::Options& options, std::string* error = nullptr);
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}
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#include <Nazara/Shader/Ast/SanitizeVisitor.inl>
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#endif
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