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Auto merge of #19462 - emilio:angle-parsing, r=nox

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style: Cleanup Angle parsing.

This PR also contains a functional change, allowing to parse unitless zero angles in hue-rotate().

See the links and the comments for why.

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bors-servo 2017-12-03 09:14:59 -06:00 • committed by GitHub
commit e4dba3abef
5 changed files with 78 additions and 56 deletions
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6
components/style/values/specified/transform.rs
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@ -29,16 +29,18 @@ pub type TransformOperation = GenericTransformOperation<
LengthOrPercentage,
LengthOrPercentageOrNumber,
>;
/// A specified CSS `transform`
pub type Transform = GenericTransform<TransformOperation>;
/// The specified value of a CSS `<transform-origin>`
pub type TransformOrigin = GenericTransformOrigin<OriginComponent<X>, OriginComponent<Y>, Length>;
impl Transform {
/// Internal parse function for deciding if we wish to accept prefixed values or not
// Allow unitless zero angle for rotate() and skew() to align with gecko
///
/// `transform` allows unitless zero angles as an exception, see:
/// https://github.com/w3c/csswg-drafts/issues/1162
fn parse_internal<'i, 't>(
context: &ParserContext,
input: &mut Parser<'i, 't>,