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Use a more compact representation to store eager pseudo-elements.

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This means that ElementStyles only need a single word to store eager pseudos.

MozReview-Commit-ID: 5bDXlDweN46
This commit is contained in:
Bobby Holley 2017-03-31 18:04:29 -07:00
parent 1ff008caa3
commit 3f0d022ba2
6 changed files with 207 additions and 97 deletions
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34
components/script_layout_interface/wrapper_traits.rs
View file

@ -339,7 +339,7 @@ pub trait ThreadSafeLayoutElement: Clone + Copy + Sized + Debug +
.unwrap()
.borrow()
.styles().pseudos
.contains_key(&PseudoElement::Before) {
.has(&PseudoElement::Before) {
Some(self.with_pseudo(PseudoElementType::Before(None)))
} else {
None
@ -352,7 +352,7 @@ pub trait ThreadSafeLayoutElement: Clone + Copy + Sized + Debug +
.unwrap()
.borrow()
.styles().pseudos
.contains_key(&PseudoElement::After) {
.has(&PseudoElement::After) {
Some(self.with_pseudo(PseudoElementType::After(None)))
} else {
None
@ -397,31 +397,29 @@ pub trait ThreadSafeLayoutElement: Clone + Copy + Sized + Debug +
// Precompute non-eagerly-cascaded pseudo-element styles if not
// cached before.
let style_pseudo = other.style_pseudo_element();
let mut data = self.get_style_data().unwrap().borrow_mut();
match style_pseudo.cascade_type() {
// Already computed during the cascade.
PseudoElementCascadeType::Eager => {},
PseudoElementCascadeType::Eager => {
data.styles().pseudos.get(&style_pseudo)
.unwrap().values().clone()
},
PseudoElementCascadeType::Precomputed => {
if !self.get_style_data()
.unwrap()
.borrow()
.styles().pseudos.contains_key(&style_pseudo) {
let mut data = self.get_style_data().unwrap().borrow_mut();
if !data.styles().cached_pseudos.contains_key(&style_pseudo) {
let new_style =
context.stylist.precomputed_values_for_pseudo(
&context.guards,
&style_pseudo,
Some(data.styles().primary.values()),
CascadeFlags::empty());
data.styles_mut().pseudos
data.styles_mut().cached_pseudos
.insert(style_pseudo.clone(), new_style);
}
data.styles().cached_pseudos.get(&style_pseudo)
.unwrap().values().clone()
}
PseudoElementCascadeType::Lazy => {
if !self.get_style_data()
.unwrap()
.borrow()
.styles().pseudos.contains_key(&style_pseudo) {
let mut data = self.get_style_data().unwrap().borrow_mut();
if !data.styles().cached_pseudos.contains_key(&style_pseudo) {
let new_style =
context.stylist
.lazily_compute_pseudo_element_style(
@ -429,15 +427,13 @@ pub trait ThreadSafeLayoutElement: Clone + Copy + Sized + Debug +
unsafe { &self.unsafe_get() },
&style_pseudo,
data.styles().primary.values());
data.styles_mut().pseudos
data.styles_mut().cached_pseudos
.insert(style_pseudo.clone(), new_style.unwrap());
}
data.styles().cached_pseudos.get(&style_pseudo)
.unwrap().values().clone()
}
}
self.get_style_data().unwrap().borrow()
.styles().pseudos.get(&style_pseudo)
.unwrap().values().clone()
}
}
}