// TODO: format should be ReadOnlySpan<T>
public static Format.Parsed Parse(Span <char> format)
{
if (format.Length == 0)
{
return(default(Format.Parsed));
}
uint precision = NoPrecision;
if (format.Length > 1)
{
var span = format.Slice(1, format.Length - 1);
if (!InvariantParser.TryParse(span, out precision))
{
throw new NotImplementedException(Properties.Resources.UnableToParsePrecision);
}
if (precision > Parsed.MaxPrecision)
{
// TODO: this is a contract violation
throw new Exception(Properties.Resources.PrecisionValueOutOfRange);
}
}
// TODO: this is duplicated from above. It needs to be refactored
var specifier = format[0];
return(new Parsed(specifier, (byte)precision));
}
// once we have a non allocating conversion from string to ReadOnlySpan<char>, we can remove this overload
public static Format.Parsed Parse(string format)
{
if (format == null || format.Length == 0)
{
return(default(Format.Parsed));
}
uint precision = NoPrecision;
if (format.Length > 1)
{
if (!InvariantParser.TryParse(format, 1, format.Length - 1, out precision))
{
throw new NotImplementedException("Unable to parse precision specification");
}
if (precision > Parsed.MaxPrecision)
{
// TODO: this is a contract violation
throw new Exception(Properties.Resources.PrecisionValueOutOfRange);
}
}
var specifier = format[0];
return(new Parsed(specifier, (byte)precision));
}