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Derive ToComputedValue for Either<A, B>

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This commit is contained in:
Anthony Ramine 2017-06-26 10:52:23 +02:00
parent 79ee821bef
commit 6c17bb03ce
1 changed files with 1 additions and 22 deletions
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23
components/style/values/mod.rs
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@ -52,7 +52,7 @@ impl Parse for Impossible {
/// A struct representing one of two kinds of values.
#[cfg_attr(feature = "servo", derive(HeapSizeOf))]
#[derive(Clone, Copy, HasViewportPercentage, PartialEq, ToCss)]
#[derive(Clone, Copy, HasViewportPercentage, PartialEq, ToComputedValue, ToCss)]
pub enum Either<A, B> {
/// The first value.
First(A),
@ -80,27 +80,6 @@ impl<A: Parse, B: Parse> Parse for Either<A, B> {
}
}
use self::computed::{Context, ToComputedValue};
impl<A: ToComputedValue, B: ToComputedValue> ToComputedValue for Either<A, B> {
type ComputedValue = Either<A::ComputedValue, B::ComputedValue>;
fn to_computed_value(&self, context: &Context) -> Self::ComputedValue {
match *self {
Either::First(ref a) => Either::First(a.to_computed_value(context)),
Either::Second(ref a) => Either::Second(a.to_computed_value(context)),
}
}
#[inline]
fn from_computed_value(computed: &Self::ComputedValue) -> Self {
match *computed {
Either::First(ref a) => Either::First(ToComputedValue::from_computed_value(a)),
Either::Second(ref a) => Either::Second(ToComputedValue::from_computed_value(a)),
}
}
}
/// https://drafts.csswg.org/css-values-4/#custom-idents
#[derive(Debug, Clone, PartialEq, Eq, Hash)]
#[cfg_attr(feature = "servo", derive(HeapSizeOf))]