public static Amount operator +(Amount a1, Amount a2)
{
if (a1.Unit == a2.Unit) //Just add
{
if (a1.SizeLow.HasValue && a2.SizeLow.HasValue) //Combine the lows, combine the highs
{
return(new Amount(a1.SizeLow + a2.SizeLow, a1.SizeHigh + a2.SizeHigh, a1.Unit));
}
if (a1.SizeLow.HasValue) //(1-2) + 1 = (2-3)
{
return(new Amount(a1.SizeLow + a2.SizeHigh, a1.SizeHigh + a2.SizeHigh, a1.Unit));
}
if (a2.SizeLow.HasValue) //1 + (1-2) = (2-3)
{
return(new Amount(a1.SizeHigh + a2.SizeLow, a1.SizeHigh + a2.SizeHigh, a1.Unit));
}
//just combine the highs
return(new Amount(a1.SizeHigh + a2.SizeHigh, a1.Unit));
}
if (UnitConverter.CanConvert(a1.Unit, a2.Unit))
{
//TODO: Handle range + nonrange
var newLow = a2.SizeLow.HasValue ? (float?)UnitConverter.Convert(a2.SizeLow.Value, a2.Unit, a1.Unit) : null;
var newHigh = a1.SizeHigh + UnitConverter.Convert(a2.SizeHigh, a2.Unit, a1.Unit);
return(new Amount(newLow, newHigh, a1.Unit));
}
throw new IncompatibleAmountException();
}
public static Amount operator +(Amount firstAmount, Amount secondAmount)
{
if (firstAmount.Unit == secondAmount.Unit) //Just add
{
if (firstAmount.SizeLow.HasValue && secondAmount.SizeLow.HasValue) //Combine the lows, combine the highs
{
return(new Amount(firstAmount.SizeLow + secondAmount.SizeLow, firstAmount.SizeHigh + secondAmount.SizeHigh, firstAmount.Unit));
}
if (firstAmount.SizeLow.HasValue) //(1-2) + 1 = (2-3)
{
return(new Amount(firstAmount.SizeLow + secondAmount.SizeHigh, firstAmount.SizeHigh + secondAmount.SizeHigh, firstAmount.Unit));
}
if (secondAmount.SizeLow.HasValue) //1 + (1-2) = (2-3)
{
return(new Amount(firstAmount.SizeHigh + secondAmount.SizeLow, firstAmount.SizeHigh + secondAmount.SizeHigh, firstAmount.Unit));
}
//just combine the highs
return(new Amount(firstAmount.SizeHigh + secondAmount.SizeHigh, firstAmount.Unit));
}
if (UnitConverter.CanConvert(firstAmount.Unit, secondAmount.Unit))
{
//TODO: Handle range + nonrange
var newLow = secondAmount.SizeLow.HasValue
? (float?)UnitConverter.Convert(secondAmount.SizeLow.Value, secondAmount.Unit, firstAmount.Unit)
: null;
var newHigh = firstAmount.SizeHigh + UnitConverter.Convert(secondAmount.SizeHigh, secondAmount.Unit, firstAmount.Unit);
return(new Amount(newLow, newHigh, firstAmount.Unit));
}
throw new IncompatibleAmountException();
}