/// <summary> /// Gets a Token of type AssignmentToken from the beginning of a line of text. /// </summary> /// <param name="line"></param> /// <returns></returns> public new static Token Parse(string line) { Token token = new NullToken(); if (AssignmentOperatorToken.__assignmentPattern.IsMatch(line)) { token = new AssignmentOperatorToken(); } return(token); }
/// <summary> /// Gets the next token while within a variable token parse state. /// </summary> /// <param name="internalLine"></param> /// <param name="token"></param> /// <param name="state"></param> /// <returns></returns> public override bool GetNextToken(string internalLine, out Token token, out TokenParseState state) { bool result = false; if ((result = PerenthesisToken.TryParse(internalLine, out token) && ((PerenthesisToken)token).PerenthesisType == PerenthesisTokenType.Closed)) { state = new PerenthesisTokenParseState(); } else if ((result = InfixFunctionToken.TryParse(internalLine, out token) || ArithmeticOperatorToken.TryParse(internalLine, out token) || BinaryOperatorToken.TryParse(internalLine, out token) || BooleanOperatorToken.TryParse(internalLine, out token) || AssignmentOperatorToken.TryParse(internalLine, out token))) { state = new InfixOperationParseState(); } else if ((result = PostfixFunctionToken.TryParse(internalLine, out token))) { state = new PostfixFunctionParseState(); } else if ((result = CommentToken.TryParse(internalLine, out token))) { state = new NullTokenParseState(); } else { state = new InvalidTokenParseState(); } return(result); }