internal override IEnumerable <TokenMatcherState> EnumerateMatches(TokenMatcherState state)
{
var i = state.Index;
foreach (var s in _InternalItem.EnumerateMatches(state))
{
yield return(s);
}
state.Index = i;
if (_InternalItem.CaptureName != null)
{
state.Captures.Remove(_InternalItem.CaptureName);
}
yield return(state);
}
internal override IEnumerable <TokenMatcherState> EnumerateMatches(TokenMatcherState state)
{
var ens = new Stack <IEnumerator <TokenMatcherState> >();
var states = new Stack <TokenMatcherState>();
var captures = new List <object>();
states.Push(state);
ens.Push(_InternalItem.EnumerateMatches(new TokenMatcherState(state.Tokens)
{
Index = state.Index
}).GetEnumerator());
while (ens.Any())
{
var p = ens.Peek();
if (p.MoveNext())
{
var cs = p.Current;
var cap = _InternalItem.CaptureName != null && cs.Captures.TryGetValue(_InternalItem.CaptureName, out var obj) ? obj : null;
captures.Add(cap);
if (captures.Count >= _Maximum)
{
state.Index = cs.Index;
if (CaptureName != null)
{
state.Captures[CaptureName] = captures;
}
yield return(state);
captures.RemoveAt(captures.Count - 1);
}
else
{
states.Push(cs);
ens.Push(_InternalItem.EnumerateMatches(new TokenMatcherState(state.Tokens)
{
Index = cs.Index
}).GetEnumerator());
}
}
else
{
var cs = states.Pop();
ens.Pop();
if (_Minimum <= captures.Count && captures.Count <= _Maximum)
{
state.Index = cs.Index;
if (CaptureName != null)
{
state.Captures[CaptureName] = captures;
}
yield return(state);
if (captures.Any())
{
captures.RemoveAt(captures.Count - 1);
}
}
}
}
}
