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Parse :nth-child() using an+b parsing from rust-cssparser.

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Simon Sapin 2013-08-09 16:21:28 +01:00
parent 1195759e79
commit bde1fcc7e9
1 changed files with 8 additions and 10 deletions
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18
selectors.rs
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@ -52,10 +52,7 @@ pub enum SimpleSelector {
Empty,
Root,
Lang(~str),
// NthChild(u32, u32),
// NthLastChild(u32, u32),
// NthOfType(u32, u32),
// NthLastOfType(u32, u32),
NthChild(i32, i32),
Negation(~[SimpleSelector]),
// ...
}
@ -168,13 +165,13 @@ fn compute_specificity(mut selector: &CompoundSelector,
for simple_selector in simple_selectors.iter() {
match simple_selector {
&LocalNameSelector{_} => specificity.element_selectors += 1,
&IDSelector(_) => specificity.id_selectors += 1,
&ClassSelector(_)
| &AttrExists(_) | &AttrEqual(_, _) | &AttrIncludes(_, _) | &AttrDashMatch(_, _)
| &AttrPrefixMatch(_, _) | &AttrSubstringMatch(_, _) | &AttrSuffixMatch(_, _)
| &Empty | &Root | &Lang(_)
&IDSelector(*) => specificity.id_selectors += 1,
&ClassSelector(*)
| &AttrExists(*) | &AttrEqual(*) | &AttrIncludes(*) | &AttrDashMatch(*)
| &AttrPrefixMatch(*) | &AttrSubstringMatch(*) | &AttrSuffixMatch(*)
| &Empty | &Root | &Lang(*) | &NthChild(*)
=> specificity.class_like_selectors += 1,
&NamespaceSelector(_) => (),
&NamespaceSelector(*) => (),
&Negation(ref negated)
=> simple_selectors_specificity(negated.as_slice(), specificity),
}
@ -414,6 +411,7 @@ fn parse_functional_pseudo_class(name: ~str, arguments: ~[ComponentValue],
let lower_name: &str = to_ascii_lower(name);
match lower_name {
"lang" => parse_lang(arguments),
"nth-child" => parse_nth(arguments).map(|&(a, b)| NthChild(a, b)),
"not" => if inside_negation { None } else { parse_negation(arguments, namespaces) },
_ => None
}