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style: Remove hashes from style rules and dependencies.

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Dependencies are very numerous, and now we shouldn't be getting so many of them.

Style rules just don't need them, so it's a waste of memory.
This commit is contained in:
Emilio Cobos Álvarez 2017-07-13 03:57:44 +02:00
parent 9394ea9644
commit dee4aea264
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GPG key ID: 056B727BB9C1027C
8 changed files with 61 additions and 84 deletions
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47
components/style/invalidation/element/invalidation_map.rs
View file

@ -10,8 +10,8 @@ use element_state::ElementState;
use selector_map::{MaybeCaseInsensitiveHashMap, SelectorMap, SelectorMapEntry};
use selector_parser::SelectorImpl;
use selectors::attr::NamespaceConstraint;
use selectors::parser::{AncestorHashes, Combinator, Component};
use selectors::parser::{Selector, SelectorAndHashes, SelectorIter, SelectorMethods};
use selectors::parser::{Combinator, Component};
use selectors::parser::{Selector, SelectorIter, SelectorMethods};
use selectors::visitor::SelectorVisitor;
use smallvec::SmallVec;
@ -59,10 +59,6 @@ pub struct Dependency {
/// The dependency selector.
#[cfg_attr(feature = "servo", ignore_heap_size_of = "Arc")]
pub selector: Selector<SelectorImpl>,
/// The ancestor hashes associated with the above selector at the given
/// offset.
#[cfg_attr(feature = "servo", ignore_heap_size_of = "No heap data")]
pub hashes: AncestorHashes,
/// The offset into the selector that we should match on.
pub selector_offset: usize,
}
@ -188,10 +184,10 @@ impl InvalidationMap {
/// Adds a selector to this `InvalidationMap`.
pub fn note_selector(
&mut self,
selector_and_hashes: &SelectorAndHashes<SelectorImpl>,
selector: &Selector<SelectorImpl>,
quirks_mode: QuirksMode)
{
self.collect_invalidations_for(selector_and_hashes, quirks_mode)
self.collect_invalidations_for(selector, quirks_mode)
}
/// Clears this map, leaving it empty.
@ -206,13 +202,12 @@ impl InvalidationMap {
fn collect_invalidations_for(
&mut self,
selector_and_hashes: &SelectorAndHashes<SelectorImpl>,
selector: &Selector<SelectorImpl>,
quirks_mode: QuirksMode)
{
debug!("InvalidationMap::collect_invalidations_for({:?})",
selector_and_hashes.selector);
debug!("InvalidationMap::collect_invalidations_for({:?})", selector);
let mut iter = selector_and_hashes.selector.iter();
let mut iter = selector.iter();
let mut combinator;
let mut index = 0;
@ -241,22 +236,6 @@ impl InvalidationMap {
index += 1; // Account for the simple selector.
}
// Reuse the bloom hashes if this is the base selector. Otherwise,
// rebuild them.
let mut hashes = None;
let mut get_hashes = || -> AncestorHashes {
if hashes.is_none() {
hashes = Some(if sequence_start == 0 {
selector_and_hashes.hashes.clone()
} else {
let seq_iter = selector_and_hashes.selector.iter_from(sequence_start);
AncestorHashes::from_iter(seq_iter)
});
}
hashes.clone().unwrap()
};
self.has_id_attribute_selectors |= compound_visitor.has_id_attribute_selectors;
self.has_class_attribute_selectors |= compound_visitor.has_class_attribute_selectors;
@ -265,9 +244,8 @@ impl InvalidationMap {
.entry(class, quirks_mode)
.or_insert_with(SelectorMap::new)
.insert(Dependency {
selector: selector_and_hashes.selector.clone(),
selector: selector.clone(),
selector_offset: sequence_start,
hashes: get_hashes(),
}, quirks_mode);
}
@ -276,9 +254,8 @@ impl InvalidationMap {
.entry(id, quirks_mode)
.or_insert_with(SelectorMap::new)
.insert(Dependency {
selector: selector_and_hashes.selector.clone(),
selector: selector.clone(),
selector_offset: sequence_start,
hashes: get_hashes(),
}, quirks_mode);
}
@ -286,9 +263,8 @@ impl InvalidationMap {
self.state_affecting_selectors
.insert(StateDependency {
dep: Dependency {
selector: selector_and_hashes.selector.clone(),
selector: selector.clone(),
selector_offset: sequence_start,
hashes: get_hashes(),
},
state: compound_visitor.state,
}, quirks_mode);
@ -297,9 +273,8 @@ impl InvalidationMap {
if compound_visitor.other_attributes {
self.other_attribute_affecting_selectors
.insert(Dependency {
selector: selector_and_hashes.selector.clone(),
selector: selector.clone(),
selector_offset: sequence_start,
hashes: get_hashes(),
}, quirks_mode);
}

8
components/style/invalidation/element/invalidator.rs
View file

@ -762,14 +762,14 @@ impl<'a, 'b: 'a, E> InvalidationCollector<'a, 'b, E>
let matched_then =
matches_selector(&dependency.selector,
dependency.selector_offset,
&dependency.hashes,
None,
&self.wrapper,
&mut then_context,
&mut |_, _| {});
let matches_now =
matches_selector(&dependency.selector,
dependency.selector_offset,
&dependency.hashes,
None,
&self.element,
&mut now_context,
&mut |_, _| {});
@ -802,7 +802,7 @@ impl<'a, 'b: 'a, E> InvalidationCollector<'a, 'b, E>
let matched_then =
matches_selector(&dependency.selector,
dependency.selector_offset,
&dependency.hashes,
None,
&self.wrapper,
&mut then_context,
&mut |_, _| {});
@ -811,7 +811,7 @@ impl<'a, 'b: 'a, E> InvalidationCollector<'a, 'b, E>
let matches_now =
matches_selector(&dependency.selector,
dependency.selector_offset,
&dependency.hashes,
None,
&self.element,
&mut now_context,
&mut |_, _| {});

4
components/style/invalidation/stylesheets.rs
View file

@ -282,8 +282,8 @@ impl StylesheetInvalidationSet {
match *rule {
Style(ref lock) => {
let style_rule = lock.read_with(guard);
for selector_and_hashes in &style_rule.selectors.0 {
self.collect_scopes(&selector_and_hashes.selector);
for selector in &style_rule.selectors.0 {
self.collect_scopes(selector);
if self.fully_invalid {
return;
}