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style: Implement the functional :host(..) selector.

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We could invalidate in a slightly more fine-grained way, but I don't think it's
worth the churn vs. keeping the special-cases minimal.

Bug: 1452640
Reviewed-by: xidorn
MozReview-Commit-ID: 5DkQrgwg9GW
This commit is contained in:
Emilio Cobos Álvarez 2018-04-09 23:23:17 +02:00
parent bfb9fe6159
commit eaefaa890e
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8 changed files with 82 additions and 47 deletions
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19
components/style/invalidation/element/invalidation_map.rs
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@ -207,16 +207,6 @@ impl InvalidationMap {
})
}
/// Adds a selector to this `InvalidationMap`. Returns Err(..) to
/// signify OOM.
pub fn note_selector(
&mut self,
selector: &Selector<SelectorImpl>,
quirks_mode: QuirksMode,
) -> Result<(), FailedAllocationError> {
self.collect_invalidations_for(selector, quirks_mode)
}
/// Clears this map, leaving it empty.
pub fn clear(&mut self) {
self.class_to_selector.clear();
@ -228,13 +218,14 @@ impl InvalidationMap {
self.has_class_attribute_selectors = false;
}
// Returns Err(..) to signify OOM.
fn collect_invalidations_for(
/// Adds a selector to this `InvalidationMap`. Returns Err(..) to
/// signify OOM.
pub fn note_selector(
&mut self,
selector: &Selector<SelectorImpl>,
quirks_mode: QuirksMode
quirks_mode: QuirksMode,
) -> Result<(), FailedAllocationError> {
debug!("InvalidationMap::collect_invalidations_for({:?})", selector);
debug!("InvalidationMap::note_selector({:?})", selector);
let mut iter = selector.iter();
let mut combinator;