Shader: Remove ShaderNode::GetExpressionType (replaced by visitor) and minor stuff

include/Nazara/Shader/ShaderAstUtils.hpp

@@ -0,0 +1,54 @@
+// 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_SHADERASTUTILS_HPP
+#define NAZARA_SHADERASTUTILS_HPP
+
+#include <Nazara/Prerequisites.hpp>
+#include <Nazara/Shader/Config.hpp>
+#include <Nazara/Shader/ShaderEnums.hpp>
+#include <Nazara/Shader/ShaderAstVisitorExcept.hpp>
+#include <vector>
+
+namespace Nz
+{
+	class ShaderAst;
+
+	class NAZARA_SHADER_API ShaderAstValueCategory final : public ShaderAstVisitorExcept
+	{
+		public:
+			ShaderAstValueCategory() = default;
+			ShaderAstValueCategory(const ShaderAstValueCategory&) = delete;
+			ShaderAstValueCategory(ShaderAstValueCategory&&) = delete;
+			~ShaderAstValueCategory() = default;
+
+			ShaderNodes::ExpressionCategory GetExpressionCategory(const ShaderNodes::ExpressionPtr& expression);
+
+			ShaderAstValueCategory& operator=(const ShaderAstValueCategory&) = delete;
+			ShaderAstValueCategory& operator=(ShaderAstValueCategory&&) = delete;
+
+		private:
+			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::ConditionalExpression& node) override;
+			void Visit(ShaderNodes::Constant& 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;
+
+			ShaderNodes::ExpressionCategory m_expressionCategory;
+	};
+
+	inline ShaderNodes::ExpressionCategory GetExpressionCategory(const ShaderNodes::ExpressionPtr& expression);
+}
+
+#include <Nazara/Shader/ShaderAstUtils.inl>
+
+#endif