public int IndexOf(ILockedLinkedListNode <T> node)
{
for (int i = 0; i < this.Count; i++)
{
if (this.series[i] == node)
{
return(i);
}
}
return(-1);
}
private static IEnumerable <IEnumerable <Tuple <IProductionRuleCaptureStructuralItem, bool> > > VariateSeries(ILockedLinkedListNode <IProductionRuleCaptureStructuralItem> startingPoint, Dictionary <IProductionRuleGroupItem, List <IProductionRuleCaptureStructuralItem> > optionalTogglers, int depth = 0)
{
var next = startingPoint.Next;
if (next == null)
{
if (startingPoint.Element.Optional)
{
yield return(YieldValue(startingPoint.Element, false));
}
yield return(YieldValue(startingPoint.Element, true));
}
else
{
foreach (var set in VariateSeries(next, optionalTogglers, depth + 1))
{
if (startingPoint.Element.Optional)
{
yield return(YieldValue(startingPoint.Element, false).Concat(set));
if (depth == 0)
{
foreach (var toggler in optionalTogglers.Keys)
{
var alternateSet = Replace(set, structuralItem => optionalTogglers[toggler].Contains(structuralItem.Item1), structuralItem =>
Tuple.Create(structuralItem.Item1, false));
if (!alternateSet.SequenceEqual(set))
{
yield return(YieldValue(startingPoint.Element, false).Concat(alternateSet));
}
}
}
}
if (depth == 0)
{
foreach (var toggler in optionalTogglers.Keys)
{
var alternateSet = Replace(set, structuralItem => optionalTogglers[toggler].Contains(structuralItem.Item1), structuralItem =>
Tuple.Create(structuralItem.Item1, false));
if (!alternateSet.SequenceEqual(set))
{
yield return(YieldValue(startingPoint.Element, true).Concat(alternateSet));
}
}
}
yield return(YieldValue(startingPoint.Element, true).Concat(set));
}
}
}
