public int ToInteger()
{
if (this._arg is int i)
{
return(i);
}
if (this._arg is double d)
{
return((int)d);
}
if (this._arg is string s)
{
try
{
return(int.Parse(s));
}
catch (Exception)
{
// Allow to pass through to ArgumentCastException
}
}
throw ArgumentCastException.Create("integer", this);
}
public double ToDouble()
{
if (this._arg is double d)
{
return(d);
}
if (this._arg is float f)
{
return(f);
}
if (this._arg is int i)
{
return(i);
}
if (this._arg is string s)
{
try
{
return(double.Parse(s));
}
catch (Exception)
{
// Allow to pass through to ArgumentCastException
}
}
throw ArgumentCastException.Create("double", this);
}
public int ToTime()
{
if (IsInteger)
{
return(ToInteger());
}
if (this._arg is string s)
{
return((int)DateUtils.MultiParseTime(s));
}
throw ArgumentCastException.Create("time", this);
}
public override Argument VisitSgnExpression(CalcParser.SgnExpressionContext context)
{
Argument arg = Visit(context.expression());
if (arg.IsNull)
{
return(Argument.Null);
}
if (arg.IsDouble)
{
return(new Argument(Math.Sign(arg.ToDouble())));
}
throw ArgumentCastException.Create("double", arg);
}
public DateTime?ToDate()
{
if (this._arg is DateTime dateTime)
{
return(dateTime);
}
if (this._arg is string s)
{
DateTime?date = DateUtils.MultiParseDate(s);
if (date != null)
{
return(date);
}
}
throw ArgumentCastException.Create("date", this);
}
public bool ToBoolean()
{
if (this._arg is bool b)
{
return(b);
}
if (this._arg is string s)
{
if (s.Equals("true", StringComparison.OrdinalIgnoreCase))
{
return(true);
}
if (s.Equals("false", StringComparison.OrdinalIgnoreCase))
{
return(false);
}
}
throw ArgumentCastException.Create("boolean", this);
}
