main.cpp - main - thomas-king/Expression

main.cpp

39 строк797 B

AceRodstin

Fix error handling

28 ноя 2022, 16:10

28 ноя 2022, 16:1049ed5f9

//
// Created by Ace Rodstin on 22 Nov 2022.
//

#include <iostream>
#include "include/Expression/Parser.h"
#include "include/Lexer/Parser.h"
#include "include/Literals/Parser.h"

int main() {
	string input = "(2 + 2) * 2";

	Lexer::Parser lexer_parser;
	auto lexer_tokens = lexer_parser.parse(input);

	try {
		Expression::Parser expression_parser;
		auto grammar_tree = expression_parser.parse(lexer_tokens);
	} catch(Expression::Parser::Error error) {
		typedef typename Expression::Parser::Error::Reason Reason;
		int code;

		switch (error.reason) {
			case Reason::invalid_parenthesis:
				code = 1;
				break;
			case Reason::invalid_operand:
				code = 2;
				break;
			case Reason::invalid_operator:
				code = 3;
				break;
		}

		cout << "Error code " << code << endl;
	}

	return 0;
}