Rework shader AST (WIP)

include/Nazara/Shader/ShaderAstCache.inl

@@ -0,0 +1,37 @@
+// 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
+
+#include <Nazara/Shader/ShaderAstCache.hpp>
+#include <Nazara/Shader/Debug.hpp>
+
+namespace Nz::ShaderAst
+{
+	inline auto AstCache::FindIdentifier(std::size_t startingScopeId, const std::string& identifierName) const -> const Identifier*
+	{
+		assert(startingScopeId < scopes.size());
+
+		std::optional<std::size_t> scopeId = startingScopeId;
+		do
+		{
+			const auto& scope = scopes[*scopeId];
+			auto it = std::find_if(scope.identifiers.rbegin(), scope.identifiers.rend(), [&](const auto& identifier) { return identifier.name == identifierName; });
+			if (it != scope.identifiers.rend())
+				return &*it;
+
+			scopeId = scope.parentScopeIndex;
+		} while (scopeId);
+
+		return nullptr;
+	}
+
+	inline std::size_t AstCache::GetScopeId(const Node* node) const
+	{
+		auto it = scopeIdByNode.find(node);
+		assert(it == scopeIdByNode.end());
+
+		return it->second;
+	}
+}
+
+#include <Nazara/Shader/DebugOff.hpp>