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Allow attributes on descendant-or-self axis

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If the context node is an attribute, the attribute itself is on the
descendant-or-self axis. The principal node type of this axis is element,
so the only node test that can return the attribute is "node()". In other
words, "@attr/descendant-or-self::node()" is equivalent to "@attr".

This matches the behavior of Saxon-CE.
This commit is contained in:
Nick Wellnhofer
2015-03-08 16:05:26 +01:00
parent 620a70615e
commit f6aaabce85
3 changed files with 16 additions and 7 deletions
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14
xpath.c
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@@ -7933,14 +7933,14 @@ xmlXPathNextDescendant(xmlXPathParserContextPtr ctxt, xmlNodePtr cur) {
xmlNodePtr
xmlXPathNextDescendantOrSelf(xmlXPathParserContextPtr ctxt, xmlNodePtr cur) {
if ((ctxt == NULL) || (ctxt->context == NULL)) return(NULL);
if (cur == NULL) {
if (ctxt->context->node == NULL)
return(NULL);
if ((ctxt->context->node->type == XML_ATTRIBUTE_NODE) ||
(ctxt->context->node->type == XML_NAMESPACE_DECL))
return(NULL);
if (cur == NULL)
return(ctxt->context->node);
}
if (ctxt->context->node == NULL)
return(NULL);
if ((ctxt->context->node->type == XML_ATTRIBUTE_NODE) ||
(ctxt->context->node->type == XML_NAMESPACE_DECL))
return(NULL);
return(xmlXPathNextDescendant(ctxt, cur));
}