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style: Use SmallVec in the computed value representation of most stuff.

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Emilio Cobos Álvarez 2017-04-30 12:26:37 +02:00
parent caa66a880a
commit 0c5681140a
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9 changed files with 68 additions and 57 deletions
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14
components/style/properties/helpers/animated_properties.mako.rs
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@ -27,6 +27,7 @@ use properties::longhands::vertical_align::computed_value::T as VerticalAlign;
use properties::longhands::visibility::computed_value::T as Visibility;
#[cfg(feature = "gecko")] use properties::{PropertyDeclarationId, LonghandId};
#[cfg(feature = "servo")] use servo_atoms::Atom;
use smallvec::SmallVec;
use std::cmp;
#[cfg(feature = "gecko")] use std::collections::HashMap;
use std::fmt;
@ -612,7 +613,7 @@ pub trait Interpolate: Sized {
/// https://drafts.csswg.org/css-transitions/#animtype-repeatable-list
pub trait RepeatableListInterpolate: Interpolate {}
impl<T: RepeatableListInterpolate> Interpolate for Vec<T> {
impl<T: RepeatableListInterpolate> Interpolate for SmallVec<[T; 1]> {
fn interpolate(&self, other: &Self, progress: f64) -> Result<Self, ()> {
use num_integer::lcm;
let len = lcm(self.len(), other.len());
@ -1065,7 +1066,12 @@ impl Interpolate for ClipRect {
};
let max_len = cmp::max(self.0.len(), other.0.len());
let mut result = Vec::with_capacity(max_len);
let mut result = if max_len > 1 {
SmallVec::from_vec(Vec::with_capacity(max_len))
} else {
SmallVec::new()
};
for i in 0..max_len {
let shadow = match (self.0.get(i), other.0.get(i)) {
@ -2192,7 +2198,7 @@ pub trait ComputeDistance: Sized {
}
}
impl<T: ComputeDistance> ComputeDistance for Vec<T> {
impl<T: ComputeDistance> ComputeDistance for SmallVec<[T; 1]> {
#[inline]
fn compute_distance(&self, other: &Self) -> Result<f64, ()> {
self.compute_squared_distance(other).map(|sd| sd.sqrt())
@ -2848,7 +2854,7 @@ impl <'a> From<<&'a IntermediateColor> for CSSParserColor {
#[cfg_attr(feature = "servo", derive(HeapSizeOf))]
#[allow(missing_docs)]
/// Intermediate type for box-shadow list and text-shadow list.
pub struct Intermediate${type}ShadowList(pub Vec<Intermediate${type}Shadow>);
pub struct Intermediate${type}ShadowList(pub SmallVec<[Intermediate${type}Shadow; 1]>);
impl <'a> From<<&'a Intermediate${type}ShadowList> for ${type}ShadowList {
fn from(shadow_list: &Intermediate${type}ShadowList) -> ${type}ShadowList {