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.wip/Language/public/SimpleParser.hpp

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+#pragma once
+
+#include "Parser.hpp"
+
+namespace tp {
+
+	// Gives ability to express grammar in the Unified Format as sentence
+	template <typename tAlphabetType>
+	class SimpleParser {
+		enum UGTokens : alni { InTransition = -1, TestSeq };
+
+		typedef Parser<tAlphabetType, UGTokens, InTransition, 0, 127> UGParser;
+		typedef Parser<tAlphabetType, alni, -1, 0, 127> UserParser;
+
+	public:
+		SimpleParser() {
+			// Grammar for unified grammar format sentence that tables compiled from
+
+			// Define Context-Free grammar
+			ContextFreeGrammar contextFreeGrammar;
+			{
+				// use existing CF grammar interface
+				contextFreeGrammar.addRule("a", { ContextFreeGrammar::Arg("") });
+				contextFreeGrammar.setStart("a");
+			}
+
+			// Define Regular grammar
+			RegularGrammar<tAlphabetType, UGTokens> regularGrammar;
+			{
+				// this is basically ast from existing tokenizer
+				regularGrammar.addRule(regularGrammar.seq({ regularGrammar.val('a'), regularGrammar.val('b') }), TestSeq);
+			}
+
+			Map<String, UGTokens> terminalsMap;
+			terminalsMap.put("TestSeq", TestSeq);
+
+			mUnifiedGrammarParser.compileTables(contextFreeGrammar, regularGrammar, terminalsMap);
+		}
+
+	public:
+		void compileTables(const tAlphabetType* grammar, ualni grammarLength) {
+			mUnifiedGrammarParser.parse(grammar, grammarLength);
+
+			// compile each ast into RegularGrammar and ContextFree Grammar api instructions
+			ContextFreeGrammar userContextFreeGrammar;
+			RegularGrammar<tAlphabetType, alni> userRegularGrammar;
+
+			// ...
+			// split ast into RE and CF part
+			// generate and execute grammar api commands
+			// use existing tokenizer code to create RE transition matrix
+			// ...
+			// compile tables from user grammar
+
+			Map<String, alni> terminalsMap;
+			terminalsMap.put("TestSeq", 0);
+
+			mUserParser.compileTables(userContextFreeGrammar, userRegularGrammar, terminalsMap);
+		}
+
+		UserParser::ParseResult parse(const tAlphabetType* grammar, ualni grammarLength) {
+			return mUserParser.parse(grammar, grammarLength);
+		}
+
+	private:
+		UGParser mUnifiedGrammarParser;
+		UserParser mUserParser;
+	};
+}