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Allow selector parser to specify pseudo-element which can be used with single-colon syntax.

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This commit is contained in:
Xidorn Quan 2017-07-12 15:07:25 +10:00
parent 706d54401e
commit 38577fd6ee
1 changed files with 9 additions and 2 deletions
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11
components/selectors/parser.rs
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@ -131,6 +131,12 @@ pub trait Parser<'i> {
type Impl: SelectorImpl;
type Error: 'i;
/// Whether the name is a pseudo-element that can be specified with
/// the single colon syntax in addition to the double-colon syntax.
fn is_pseudo_element_allows_single_colon(name: &CompactCowStr<'i>) -> bool {
is_css2_pseudo_element(name)
}
/// This function can return an "Err" pseudo-element in order to support CSS2.1
/// pseudo-elements.
fn parse_non_ts_pseudo_class(&self, name: CompactCowStr<'i>)
@ -1481,7 +1487,7 @@ where Impl: SelectorImpl, F: FnOnce(i32, i32) -> Component<Impl> {
/// Returns whether the name corresponds to a CSS2 pseudo-element that
/// can be specified with the single colon syntax (in addition to the
/// double-colon syntax, which can be used for all pseudo-elements).
fn is_css2_pseudo_element<'i>(name: &CompactCowStr<'i>) -> bool {
pub fn is_css2_pseudo_element<'i>(name: &CompactCowStr<'i>) -> bool {
// ** Do not add to this list! **
return name.eq_ignore_ascii_case("before") ||
name.eq_ignore_ascii_case("after") ||
@ -1530,7 +1536,8 @@ fn parse_one_simple_selector<'i, 't, P, E, Impl>(parser: &P,
Token::Function(name) => (name, true),
t => return Err(ParseError::Basic(BasicParseError::UnexpectedToken(t))),
};
let is_pseudo_element = !is_single_colon || is_css2_pseudo_element(&name);
let is_pseudo_element = !is_single_colon ||
P::is_pseudo_element_allows_single_colon(&name);
if is_pseudo_element {
let pseudo_element = if is_functional {
input.parse_nested_block(|input| {