internal XElement ExecuteFSM(IEnumerator<XElement> enumerator, XName requestingXName, WildCard requestingWildCard) {
XElement currElem = null;
WildCard matchingWildCard = null;
XName matchingName = null;
while(enumerator.MoveNext()){
currElem = enumerator.Current;
currentState = FsmMakeTransition(currentState, currElem.Name, out matchingName, out matchingWildCard);
if (currentState!= FSM.InvalidState) {
if ( (requestingXName != null) && (matchingName != null)) {
if (requestingXName.Equals(currElem.Name)) return currElem;
}
else if ( (requestingWildCard != null) && (matchingWildCard != null) ){//requesting for ANY
if (requestingWildCard.Allows(currElem.Name)) //Make sure current element is allowed by requesting ANY property
return currElem;
}
}
else {//Get stuck. No recovery attempt is provided for now.
return null;
}
}
//No matching elements/wildcards are found
return null;
}
private static bool Compare(XName first, XName second)
{
return first.Equals(second);
}