protected LexCapture Execute(string name, string pattern, bool advance = true, bool autoAnchor = true)
{
if (Captures.Count > MaxStack)
{
throw new InvalidOperationException();
}
if (autoAnchor)
{
pattern = "\\G" + pattern;
}
var regex = Patterns.GetOrAdd(pattern, p => new Regex(p, RegexOptions.Compiled));
var regMatch = regex.Match(Input, Position);
var matchResult = new LexCapture(Position)
{
Match = regMatch,
StackPosition = MatchStack.Count,
StackId = CurrentStackId(),
Type = new LexToken(name, pattern, advance)
};
if (matchResult.Match?.Success == true)
{
AddCaptureToCaptureHistory(matchResult);
}
return(matchResult);
}
private void AddCaptureToCaptureHistory(LexCapture matchResult)
{
Captures.Add(matchResult);
if (Captures.Count > MaxStack)
{
throw new InvalidOperationException();
}
}
