internal int getNonWSCount(XsltContext context) {
if (NonWSCount == 0) {
for(int i=0; i < _Stk.Count; i++) {
XPathNavigator nav = _Stk[i] as XPathNavigator;
if (nav.NodeType != XPathNodeType.Whitespace || context.PreserveWhitespace(nav)) {
NonWSCount++;
}
}
}
return NonWSCount;
}