public void validate() throws XPathException {
stackFrameMap = getConfiguration().makeSlotManager();
checkTopLevel(null);
// the check for duplicates is now done in the buildIndexes() method of XSLStylesheet
if (match != null) {
match = typeCheck("match", match);
if (match.getNodeTest() instanceof EmptySequenceTest) {
try {
getConfiguration()
.getErrorListener()
.warning(new TransformerException("Match pattern cannot match any nodes", this));
} catch (TransformerException e) {
compileError(XPathException.makeXPathException(e));
}
}
}
// See if there are any required parameters.
AxisIterator kids = iterateAxis(Axis.CHILD);
while (true) {
NodeInfo param = (NodeInfo) kids.next();
if (param == null) {
break;
}
if (param instanceof XSLParam && ((XSLParam) param).isRequiredParam()) {
hasRequiredParams = true;
break;
}
}
}
private static int findNodeIndex(NodeInfo node) {
if (node.getParent() == null) return 0;
final AxisIterator it = node.iterateAxis(Axis.PRECEDING_SIBLING);
int result = 0;
Item i = it.next();
while (i != null) {
result++;
i = it.next();
}
return result;
}