private Match?GetMatch(int i)
{
Debug.Assert(i >= 0, "i cannot be negative.");
if (_matches.Count > i)
{
return(_matches[i]);
}
if (_done)
{
return(null);
}
Match match;
do
{
match = _regex.RunSingleMatch(false, _prevlen, _input, 0, _input.Length, _startat) !;
if (!match.Success)
{
_done = true;
return(null);
}
_matches.Add(match);
_prevlen = match.Length;
_startat = match._textpos;
} while (_matches.Count <= i);
return(match);
}
/// <summary>
/// Advances the enumerator to the next match in the span.
/// </summary>
/// <returns>
/// <see langword="true"/> if the enumerator was successfully advanced to the next element; <see langword="false"/> if the enumerator cannot find additional matches.
/// </returns>
public bool MoveNext()
{
(bool Success, int Index, int Length, int TextPosition)match = _regex.RunSingleMatch(RegexRunnerMode.BoundsRequired, _prevLen, _input, _startAt);
if (match.Success)
{
_current = new ValueMatch(match.Index, match.Length);
_startAt = match.TextPosition;
_prevLen = match.Length;
return(true);
}
return(false);
}