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mirror of https://gitlab.gnome.org/GNOME/libxml2.git synced 2025-01-26 10:03:34 +03:00
Nick Wellnhofer c2f4da1a93 Improve XPath predicate and filter evaluation
Consolidate code paths evaluating XPath predicates and filters.

Don't push context node on stack when evaluating predicates. I have no
idea why this was done. It seems completely useless and trying to pop
the context node from a corrupted stack has already caused security
issues.

Filter nodesets in-place and don't create node sets with NULL gaps which
allows to simplify merging a great deal. Simply move matched nodes
backward and create a compact node set.

Merge xmlXPathCompOpEvalPositionalPredicate into
xmlXPathCompOpEvalPredicate.
2019-04-22 14:48:46 +02:00
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