public Result <TextSpan, TextSpan> Parse(ParseText text, TextSpan span)
{
if (span.Length == 0)
{
return(new Unmatched <TextSpan, TextSpan>(span));
}
var match = text.Match(_regex, span);
if (match.Success && match.Index == 0)
{
return(new Success <TextSpan, TextSpan>(span.Take(match.Length), span.Skip(match.Length)));
}
return(new Unmatched <TextSpan, TextSpan>(span));
}
public override Match Match(Regex regex, TextSpan span)
{
CheckSpanInLength(span);
return(_text.Match(regex, new TextSpan(_span.Start + span.Start, span.Length)));
}
