public override object ValidateElement(XmlQualifiedName name, ValidationState context, out int errorCode) {
BitSet curpos = context.CurPos[context.CurrentState.CurPosIndex];
int next = (context.CurrentState.CurPosIndex + 1) % 2;
BitSet nextpos = context.CurPos[next];
nextpos.Clear();
int symbol = symbols[name];
object particle = null;
errorCode = 0;
for (int pos = curpos.NextSet(-1); pos != -1; pos = curpos.NextSet(pos)) {
// if position can follow
if (symbol == positions[pos].symbol) {
nextpos.Or(followpos[pos]);
particle = positions[pos].particle; //Between element and wildcard, element will be in earlier pos than wildcard since we add the element nodes to the list of positions first
break; // and then ExpandTree for the namespace nodes which adds the wildcards to the positions list
}
}
if (!nextpos.IsEmpty) {
context.CurrentState.CurPosIndex = next;
return particle;
}
if (IsOpen && curpos[endMarkerPos]) {
// XDR allows any well-formed contents after matched.
return null;
}
context.NeedValidateChildren = false;
errorCode = -1;
return null; // will never be here
}
