public void TryCalculate(string expression, char floatSeparator)
{
Parser parser = new Parser(new List <TokenType> {
TokenType.Space
});
parser.RegisterRecognizer(new WhitespaceRecognizer(), TokenType.Space, 0);
parser.RegisterRecognizer(new TextRecognizer("+"), TokenType.PlusOperator, 0);
parser.RegisterRecognizer(new TextRecognizer("-"), TokenType.MinusOperator, 0);
parser.RegisterRecognizer(new TextRecognizer("*"), TokenType.MultiplyOperator, 0);
parser.RegisterRecognizer(new TextRecognizer("/"), TokenType.DivideOperator, 0);
parser.RegisterRecognizer(new TextRecognizer("^"), TokenType.PowerOperator, 0);
parser.RegisterRecognizer(new TextRecognizer("("), TokenType.OpenBracket, 0);
parser.RegisterRecognizer(new TextRecognizer(")"), TokenType.CloseBracket, 0);
parser.RegisterRecognizer(new NumberRecognizer(floatSeparator), TokenType.Number, 0);
try
{
IEnumerable <Lexeme> lexems = parser.Parse(expression);
NumberFormatInfo numberFormat = new NumberFormatInfo {
NumberDecimalSeparator = floatSeparator.ToString()
};
float result = new ReversePolishNotation().Calculate(lexems, expression, numberFormat);
Console.WriteLine(result.ToString(numberFormat));
}
catch (ParseException exc)
{
Console.WriteLine($"Unexpected symbol \"{expression.Substring(exc.BadSymbolIndex)}\"");
}
catch (ReversePolishNotationException exc)
{
Console.WriteLine(exc.Message);
}
}
