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Improve handling of trait bounds when deriving fmap-like traits

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This commit is contained in:
Anthony Ramine 2017-08-26 12:40:28 +02:00
parent 8101887d31
commit efc852f6e3
12 changed files with 229 additions and 136 deletions
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30
components/style/values/computed/image.rs
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@ -203,33 +203,3 @@ impl ToComputedValue for SpecifiedGradient {
}
}
}
impl ToComputedValue for SpecifiedGradientKind {
type ComputedValue = GradientKind;
fn to_computed_value(&self, context: &Context) -> Self::ComputedValue {
match self {
&GenericGradientKind::Linear(ref line_direction) => {
GenericGradientKind::Linear(line_direction.to_computed_value(context))
},
&GenericGradientKind::Radial(ref ending_shape, ref position, ref angle) => {
GenericGradientKind::Radial(ending_shape.to_computed_value(context),
position.to_computed_value(context),
angle.map(|angle| angle.to_computed_value(context)))
}
}
}
fn from_computed_value(computed: &Self::ComputedValue) -> Self {
match *computed {
GenericGradientKind::Linear(line_direction) => {
GenericGradientKind::Linear(SpecifiedLineDirection::from_computed_value(&line_direction))
},
GenericGradientKind::Radial(ending_shape, position, angle) => {
GenericGradientKind::Radial(ToComputedValue::from_computed_value(&ending_shape),
ToComputedValue::from_computed_value(&position),
angle.map(|angle| ToComputedValue::from_computed_value(&angle)))
}
}
}
}