public override Argument VisitUnaryMinusExpression(CalcParser.UnaryMinusExpressionContext context)
{
Argument arg = Visit(context.expression());
if (arg.IsNull)
{
return(Argument.Null);
}
if (arg.IsInteger)
{
return(new Argument(-arg.ToInteger()));
}
if (arg.IsDouble)
{
return(new Argument(-arg.ToDouble()));
}
throw new ArgumentCastException("Wrong argument in unary minus expression");
}
public override Query VisitUnaryMinusExpression(CalcParser.UnaryMinusExpressionContext context)
{
Query q = Visit(context.expression());
return(new Query($"(-{q})", ResultType.Number));
}