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Fix revalidation selectors when pseudo-elements are involved.

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This commit is contained in:
Boris Zbarsky 2017-06-08 01:19:50 -04:00
parent 24e944ad94
commit 537cf52707
3 changed files with 60 additions and 9 deletions
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7
components/selectors/parser.rs
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@ -479,6 +479,9 @@ impl<'a, Impl: 'a + SelectorImpl> AncestorIter<'a, Impl> {
fn skip_until_ancestor(&mut self) {
loop {
while self.0.next().is_some() {}
// If this is ever changed to stop at the "pseudo-element"
// combinator, we will need to fix the way we compute hashes for
// revalidation selectors.
if self.0.next_sequence().map_or(true, |x| matches!(x, Combinator::Child | Combinator::Descendant)) {
break;
}
@ -515,7 +518,9 @@ pub enum Combinator {
/// A dummy combinator we use to the left of pseudo-elements.
///
/// It serializes as the empty string, and acts effectively as a child
/// combinator.
/// combinator in most cases. If we ever actually start using a child
/// combinator for this, we will need to fix up the way hashes are computed
/// for revalidation selectors.
PseudoElement,
}