static Parsed <Thickness <Points> > TryParseThickness(string str)
{
var parts = str.Split(",");
switch (parts.Length)
{
case 1:
return(parts[0].TryParsePoints()
.Select(all => new Thickness <Points>(all)));
case 2:
return(Parsed.Create(
stringValue: str,
value: Optional.Combine(
parts[0].TryParsePoints().Value,
parts[1].TryParsePoints().Value,
(h, v) => new Thickness <Points>(h, v))));
case 4:
return(Parsed.Create(
stringValue: str,
value: Optional.Combine(
parts[0].TryParsePoints().Value,
parts[1].TryParsePoints().Value,
parts[2].TryParsePoints().Value,
parts[3].TryParsePoints().Value,
(l, t, r, b) => new Thickness <Points>(l, t, r, b))));
default:
return(Parsed.Failure <Thickness <Points> >(str));
}
}
public static Func <string, Parsed <Size <T> > > CreateSizeParser <T>(Func <string, Parsed <T> > tryParseLength)
{
return(value =>
{
var parts = value.Split(",");
if (parts.Length == 1)
{
return tryParseLength(parts[0]).Select(Size.Create);
}
if (parts.Length == 2)
{
return Parsed.Create(value,
tryParseLength(parts[0]).Value.SelectMany(x =>
tryParseLength(parts[1]).Value.Select(y =>
Size.Create(x, y))));
}
return Parsed.Failure <Size <T> >(value);
});
}
