Language Initial

Language/old/Parser/public/CLR.hpp

@@ -0,0 +1,62 @@
+#pragma once
+
+#include "CfGrammar.hpp"
+
+namespace tp {
+	class CLR {
+	public:
+		struct ASTNode {
+			const CfGrammar::Rule* production = nullptr;
+			Map<String, String> terminals;
+		};
+
+		class Automation {
+		public:
+			class State {};
+		};
+
+		class TerminalStream {
+		public:
+			typedef ualni TerminalID;
+
+		public:
+			TerminalStream() = default;
+			virtual TerminalID getNextTerminal() = 0;
+		};
+
+	public:
+		struct BuildError {
+			String description;
+		};
+
+		struct ParseError {
+			const Automation::State* state = nullptr;
+			String::Index location = 0;
+		};
+
+	private:
+		class SententialStack {};
+
+	public:
+		CLR() = default;
+
+		void setGrammar(const CfGrammar& grammar);
+		void setTerminal(const String& name, TerminalStream::TerminalID id);
+		void build();
+
+		void parse(TerminalStream* stream, List<ASTNode>& out, ASTNode** root);
+
+		[[nodiscard]] bool isBuild() { return mState == ParserState::BUILD; }
+		[[nodiscard]] const BuildError& getBuildError() { return mBuildError; }
+		[[nodiscard]] const ParseError& getParseError() { return mParseError; }
+
+	private:
+		enum class ParserState { NONE, BUILD, FAILED } mState = ParserState::NONE;
+
+		ParseError mParseError;
+		BuildError mBuildError;
+
+		SententialStack mStack;
+		Automation mAutomation;
+	};
+}