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selectors: Allow defining an implementation-dependent field in the matching context.

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Emilio Cobos Álvarez 2018-01-11 12:07:24 +01:00
parent 9b3fc43f5a
commit 1e27f2883b
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6 changed files with 11 additions and 0 deletions
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components/selectors/parser.rs
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@ -84,6 +84,7 @@ macro_rules! with_all_bounds {
/// are parameterized on SelectorImpl. See
/// <https://github.com/rust-lang/rust/issues/26925>
pub trait SelectorImpl: Clone + Sized + 'static {
type ExtraMatchingData: Sized + 'static;
type AttrValue: $($InSelector)*;
type Identifier: $($InSelector)* + PrecomputedHash;
type ClassName: $($InSelector)* + PrecomputedHash;
@ -2027,6 +2028,7 @@ pub mod tests {
}
impl SelectorImpl for DummySelectorImpl {
type ExtraMatchingData = ();
type AttrValue = DummyAtom;
type Identifier = DummyAtom;
type ClassName = DummyAtom;