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Merge normal and important declarations in style rules.

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Have a single Vec instead of two. Fix #3426
This commit is contained in:
Simon Sapin 2016-08-19 16:14:06 +02:00
parent 577d2dc3fa
commit 16bbc2f26e
11 changed files with 248 additions and 221 deletions
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20
components/style/keyframes.rs
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@ -5,9 +5,9 @@
use cssparser::{AtRuleParser, Parser, QualifiedRuleParser, RuleListParser};
use cssparser::{DeclarationListParser, DeclarationParser};
use parser::{ParserContext, log_css_error};
use properties::PropertyDeclaration;
use properties::PropertyDeclarationParseResult;
use properties::animated_properties::TransitionProperty;
use properties::{PropertyDeclaration, Importance};
use std::sync::Arc;
/// A number from 1 to 100, indicating the percentage of the animation where
@ -72,7 +72,12 @@ impl KeyframeSelector {
#[cfg_attr(feature = "servo", derive(HeapSizeOf))]
pub struct Keyframe {
pub selector: KeyframeSelector,
pub declarations: Arc<Vec<PropertyDeclaration>>,
/// `!important` is not allowed in keyframe declarations,
/// so the second value of these tuples is always `Importance::Normal`.
/// But including them enables `compute_style_for_animation_step` to create a `DeclarationBlock`
/// by cloning an `Arc<_>` (incrementing a reference count) rather than re-creating a `Vec<_>`.
pub declarations: Arc<Vec<(PropertyDeclaration, Importance)>>,
}
/// A keyframes step value. This can be a synthetised keyframes animation, that
@ -82,7 +87,8 @@ pub struct Keyframe {
#[derive(Debug, Clone, PartialEq)]
#[cfg_attr(feature = "servo", derive(HeapSizeOf))]
pub enum KeyframesStepValue {
Declarations(Arc<Vec<PropertyDeclaration>>),
/// See `Keyframe::declarations`’s docs about the presence of `Importance`.
Declarations(Arc<Vec<(PropertyDeclaration, Importance)>>),
ComputedValues,
}
@ -108,7 +114,7 @@ impl KeyframesStep {
value: KeyframesStepValue) -> Self {
let declared_timing_function = match value {
KeyframesStepValue::Declarations(ref declarations) => {
declarations.iter().any(|prop_decl| {
declarations.iter().any(|&(ref prop_decl, _)| {
match *prop_decl {
PropertyDeclaration::AnimationTimingFunction(..) => true,
_ => false,
@ -148,8 +154,8 @@ fn get_animated_properties(keyframe: &Keyframe) -> Vec<TransitionProperty> {
let mut ret = vec![];
// NB: declarations are already deduplicated, so we don't have to check for
// it here.
for declaration in keyframe.declarations.iter() {
if let Some(property) = TransitionProperty::from_declaration(&declaration) {
for &(ref declaration, _) in keyframe.declarations.iter() {
if let Some(property) = TransitionProperty::from_declaration(declaration) {
ret.push(property);
}
}
@ -247,7 +253,7 @@ impl<'a> QualifiedRuleParser for KeyframeListParser<'a> {
let mut iter = DeclarationListParser::new(input, parser);
while let Some(declaration) = iter.next() {
match declaration {
Ok(d) => declarations.extend(d),
Ok(d) => declarations.extend(d.into_iter().map(|d| (d, Importance::Normal))),
Err(range) => {
let pos = range.start;
let message = format!("Unsupported keyframe property declaration: '{}'",