public Argument Calculate(string expression)
{
AntlrInputStream inputStream = new AntlrInputStream(expression);
CalcLexer calcLexer = new CalcLexer(inputStream);
calcLexer.RemoveErrorListeners(); //removes the default console listener
calcLexer.AddErrorListener(new ThrowExceptionErrorListener());
CommonTokenStream commonTokenStream = new CommonTokenStream(calcLexer);
CalcParser parser = new CalcParser(commonTokenStream);
parser.RemoveErrorListeners(); //removes the default console listener
parser.AddErrorListener(new ThrowExceptionErrorListener());
CalcParser.ExpressionContext context = parser.expression();
return(this._visitor.Visit(context));
}
