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style: Record attribute dependencies within the selector list of :nth-child(... of <selector list>)

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There are separate filters for IDs, classes, attribute local names, and
element state.

Also, we invalidate siblings of elements matched against the selector
list of :nth-child(... of <selector list>) by marking matched elements
with NODE_HAS_SLOW_SELECTOR_NTH_OF.

The only remaining invalidation case invalidation case is
`:nth-child(An+B of :has())` (bug 1818155), which should not block
shipping `layout.css.nth-child-of.enabled`, because :has(...) is still
being implemented (bug 418039).

Depends on D172352

Differential Revision: https://phabricator.services.mozilla.com/D171936
This commit is contained in:
Zach Hoffman 2023-03-15 06:56:21 +00:00 • committed by Martin Robinson
parent c7f8845665
commit 356e886d26
7 changed files with 261 additions and 28 deletions
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7
components/style/invalidation/element/invalidation_map.rs
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@ -14,7 +14,6 @@ use crate::{Atom, LocalName, Namespace, ShrinkIfNeeded};
use selectors::attr::NamespaceConstraint;
use selectors::parser::{Combinator, Component};
use selectors::parser::{Selector, SelectorIter};
use selectors::visitor::SelectorVisitor;
use smallvec::SmallVec;
use style_traits::dom::{DocumentState, ElementState};
@ -430,7 +429,11 @@ impl<'a> SelectorDependencyCollector<'a> {
impl<'a> SelectorVisitor for SelectorDependencyCollector<'a> {
type Impl = SelectorImpl;
fn visit_selector_list(&mut self, list: &[Selector<SelectorImpl>]) -> bool {
fn visit_selector_list(
&mut self,
_list_kind: SelectorListKind,
list: &[Selector<SelectorImpl>],
) -> bool {
for selector in list {
// Here we cheat a bit: We can visit the rightmost compound with
// the "outer" visitor, and it'd be fine. This reduces the amount of