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style: Avoid some allocations in selector serialization.

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The allocations in display_to_css_identifier show up in the profiles of
bug 1675628.

Differential Revision: https://phabricator.services.mozilla.com/D97856
This commit is contained in:
Emilio Cobos Álvarez 2020-11-22 01:02:22 +00:00
parent 4ea378a6ae
commit 9f40b9ba38
19 changed files with 220 additions and 114 deletions
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8
components/style/dom_apis.rs
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@ -10,7 +10,7 @@ use crate::dom::{TDocument, TElement, TNode, TShadowRoot};
use crate::invalidation::element::invalidation_map::Dependency;
use crate::invalidation::element::invalidator::{DescendantInvalidationLists, Invalidation};
use crate::invalidation::element::invalidator::{InvalidationProcessor, InvalidationVector};
use crate::Atom;
use crate::values::AtomIdent;
use selectors::attr::CaseSensitivity;
use selectors::matching::{self, MatchingContext, MatchingMode};
use selectors::parser::{Combinator, Component, LocalName, SelectorImpl};
@ -276,7 +276,7 @@ where
/// or shadow root that `root` is connected to.
fn fast_connected_elements_with_id<'a, N>(
root: N,
id: &Atom,
id: &AtomIdent,
quirks_mode: QuirksMode,
) -> Result<&'a [N::ConcreteElement], ()>
where
@ -305,7 +305,7 @@ where
/// Collects elements with a given id under `root`, that pass `filter`.
fn collect_elements_with_id<E, Q, F>(
root: E::ConcreteNode,
id: &Atom,
id: &AtomIdent,
results: &mut Q::Output,
quirks_mode: QuirksMode,
mut filter: F,
@ -398,7 +398,7 @@ where
}
enum SimpleFilter<'a, Impl: SelectorImpl> {
Class(&'a Atom),
Class(&'a AtomIdent),
LocalName(&'a LocalName<Impl>),
}