/// <summary> /// Gets the next token while in the set container 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; Token lastToken = CalculatorContext.GetInstance()[CalculatorContext.LastToken]; if ((result = SetContainerToken.TryParse(internalLine, out token) && ((SetContainerToken)token).SetContainerType == ((SetContainerToken)lastToken).SetContainerType)) { state = new SetContainerTokenParseState(); } else if ((result = CommentToken.TryParse(internalLine, out token))) { state = new NullTokenParseState(); } else if (((SetContainerToken)lastToken).SetContainerType == SetContainerTokenType.Open) { if ((result = PrefixFunctionToken.TryParse(internalLine, out token))) { state = new PrefixFunctionTokenParseState(); } else if ((result = BooleanToken.TryParse(internalLine, out token) || ConstantToken.TryParse(internalLine, out token) || NumberToken.TryParse(internalLine, out token) || LastResultToken.TryParse(internalLine, out token))) { state = new ValueTokenParseState(); } else if ((result = VariableToken.TryParse(internalLine, out token))) { state = new VariableTokenParseState(); } else { state = new InvalidTokenParseState(); } } else if ((result = InfixFunctionToken.TryParse(internalLine, out token) || ArithmeticOperatorToken.TryParse(internalLine, out token) || BinaryOperatorToken.TryParse(internalLine, out token) || BooleanOperatorToken.TryParse(internalLine, out token))) { state = new InfixOperationParseState(); } else if ((result = PostfixFunctionToken.TryParse(internalLine, out token))) { state = new PostfixFunctionParseState(); } else { state = new InvalidTokenParseState(); } return(result); }
/// <summary> /// Gets a Token of type SetContainerToken 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 (SetContainerToken.__setContainerPattern.IsMatch(line)) { string matchText = SetContainerToken.__setContainerPattern.Matches(line)[0].Value; token = new SetContainerToken(matchText); if (matchText.Equals("[", StringComparison.InvariantCultureIgnoreCase)) { ((SetContainerToken)token)._setContainerType = SetContainerTokenType.Open; } else { ((SetContainerToken)token)._setContainerType = SetContainerTokenType.Closed; } } return(token); }