Big SpirVWriter refactor

include/Nazara/Shader/SpirvExpressionLoad.hpp

@@ -0,0 +1,64 @@
+// Copyright (C) 2020 Jérôme Leclercq
+// This file is part of the "Nazara Engine - Shader generator"
+// For conditions of distribution and use, see copyright notice in Config.hpp
+
+#pragma once
+
+#ifndef NAZARA_SPIRVEXPRESSIONLOAD_HPP
+#define NAZARA_SPIRVEXPRESSIONLOAD_HPP
+
+#include <Nazara/Prerequisites.hpp>
+#include <Nazara/Shader/Config.hpp>
+#include <Nazara/Shader/ShaderAstVisitorExcept.hpp>
+#include <Nazara/Shader/ShaderVarVisitorExcept.hpp>
+#include <vector>
+
+namespace Nz
+{
+	class SpirvWriter;
+
+	class NAZARA_SHADER_API SpirvExpressionLoad : public ShaderAstVisitorExcept, public ShaderVarVisitorExcept
+	{
+		public:
+			inline SpirvExpressionLoad(SpirvWriter& writer);
+			SpirvExpressionLoad(const SpirvExpressionLoad&) = delete;
+			SpirvExpressionLoad(SpirvExpressionLoad&&) = delete;
+			~SpirvExpressionLoad() = default;
+
+			UInt32 EvaluateExpression(const ShaderNodes::ExpressionPtr& expr);
+
+			using ShaderAstVisitorExcept::Visit;
+			void Visit(ShaderNodes::AccessMember& node) override;
+			void Visit(ShaderNodes::AssignOp& node) override;
+			void Visit(ShaderNodes::BinaryOp& node) override;
+			void Visit(ShaderNodes::Cast& node) override;
+			void Visit(ShaderNodes::Constant& node) override;
+			void Visit(ShaderNodes::DeclareVariable& node) override;
+			void Visit(ShaderNodes::ExpressionStatement& node) override;
+			void Visit(ShaderNodes::Identifier& node) override;
+			void Visit(ShaderNodes::IntrinsicCall& node) override;
+			void Visit(ShaderNodes::Sample2D& node) override;
+			void Visit(ShaderNodes::SwizzleOp& node) override;
+
+			using ShaderVarVisitorExcept::Visit;
+			void Visit(ShaderNodes::BuiltinVariable& var) override;
+			void Visit(ShaderNodes::InputVariable& var) override;
+			void Visit(ShaderNodes::LocalVariable& var) override;
+			void Visit(ShaderNodes::ParameterVariable& var) override;
+			void Visit(ShaderNodes::UniformVariable& var) override;
+
+			SpirvExpressionLoad& operator=(const SpirvExpressionLoad&) = delete;
+			SpirvExpressionLoad& operator=(SpirvExpressionLoad&&) = delete;
+
+		private:
+			void PushResultId(UInt32 value);
+			UInt32 PopResultId();
+
+			std::vector<UInt32> m_resultIds;
+			SpirvWriter& m_writer;
+	};
+}
+
+#include <Nazara/Shader/SpirvExpressionLoad.inl>
+
+#endif