public static bool FnEmpty (XPathSequence e)
{
if (e is XPathEmptySequence)
return true;
return !e.GetEnumerator ().MoveNext ();
}
public static XPathSequence FnIndexOf (XQueryContext ctx, XPathSequence items, XPathItem item, CultureInfo ci)
{
ArrayList al = new ArrayList ();
IEnumerator e = items.GetEnumerator ();
for (int i = 0; e.MoveNext (); i++) {
XPathItem iter = e.Current as XPathItem;
if (iter.XmlType.TypeCode == XmlTypeCode.String) {
if (ci.CompareInfo.Compare (iter.Value, item.Value) == 0)
al.Add (i);
}
else {
IComparable ic = (IComparable) iter.TypedValue;
if (ic.CompareTo ((IComparable) item.TypedValue) == 0)
al.Add (i);
}
}
return new ListIterator (ctx, al);
}