Move match and cascade temporaries to CurrentElementInfo

Before this change, the `ComputedStyle` struct that is part of permanent style
data per element holds 2 `StrongRuleNode`s (unvisited and visited) and 2
`Arc<ComputedValues>` (unvisited and visited).

Both rule nodes and the visited values don't actually need to be here.  This
patch moves these 3 to new temporary storage in `CascadeInputs` on
`CurrentElementInfo` during the match and cascade process.  Rule nodes are
pushed down inside the `ComputedValues` for later access after the cascade.
(Visited values were already available there.)

The permanent style data per element now has just the `Arc<ComputedValues>` for
itself and eager pseudo-elements (plus the `RestyleHint`).

MozReview-Commit-ID: 3wq52ERMpdi
This commit is contained in:
J. Ryan Stinnett 2017-06-13 12:51:37 -05:00
parent c3b2a2f4de
commit 2b5c56e6a8
19 changed files with 738 additions and 746 deletions

View file

@ -218,8 +218,7 @@ fn fmt_with_data_and_primary_values<N: TNode>(f: &mut fmt::Formatter, n: N) -> f
if let Some(el) = n.as_element() {
let dd = el.has_dirty_descendants();
let data = el.borrow_data();
let styles = data.as_ref().and_then(|d| d.get_styles());
let values = styles.map(|s| s.primary.values());
let values = data.as_ref().and_then(|d| d.styles.get_primary());
write!(f, "{:?} dd={} data={:?} values={:?}", el, dd, &data, values)
} else {
write!(f, "{:?}", n)