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Add iterators for vector types

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MozReview-Commit-ID: I7oOpYhVP5S
This commit is contained in:
Manish Goregaokar 2017-05-02 21:58:21 -07:00 • committed by Manish Goregaokar
parent 36f26148e6
commit c85aae4abd
3 changed files with 43 additions and 3 deletions
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14
components/style/properties/helpers.mako.rs
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@ -74,7 +74,7 @@
</%doc>
<%def name="vector_longhand(name, gecko_only=False, allow_empty=False,
delegate_animate=False, space_separated_allowed=False, **kwargs)">
<%call expr="longhand(name, **kwargs)">
<%call expr="longhand(name, vector=True, **kwargs)">
% if not gecko_only:
use smallvec::SmallVec;
use std::fmt;
@ -103,6 +103,8 @@
pub use super::single_value::computed_value as single_value;
pub use self::single_value::T as SingleComputedValue;
use smallvec::SmallVec;
use values::computed::ComputedVecIter;
/// The computed value, effectively a list of single values.
#[derive(Debug, Clone, PartialEq)]
#[cfg_attr(feature = "servo", derive(HeapSizeOf))]
@ -129,6 +131,8 @@
}
}
% endif
pub type Iter<'a, 'cx, 'cx_a> = ComputedVecIter<'a, 'cx, 'cx_a, super::single_value::SpecifiedValue>;
}
impl ToCss for computed_value::T {
@ -212,12 +216,18 @@
pub use self::single_value::SpecifiedValue as SingleSpecifiedValue;
impl SpecifiedValue {
pub fn compute_iter<'a, 'cx, 'cx_a>(&'a self, context: &'cx Context<'cx_a>) -> computed_value::Iter<'a, 'cx, 'cx_a> {
computed_value::Iter::new(context, &self.0)
}
}
impl ToComputedValue for SpecifiedValue {
type ComputedValue = computed_value::T;
#[inline]
fn to_computed_value(&self, context: &Context) -> computed_value::T {
computed_value::T(self.0.iter().map(|x| x.to_computed_value(context)).collect())
computed_value::T(self.compute_iter(context).collect())
}
#[inline]
fn from_computed_value(computed: &computed_value::T) -> Self {