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style: Add diagnostics.

Browse source 
Bug: 1416282
Reviewed-by: xidorn
MozReview-Commit-ID: GTnFyZnXR84
This commit is contained in:
Emilio Cobos Álvarez 2018-06-10 01:08:43 +02:00
parent d65b29da27
commit 572a93142f
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GPG key ID: 056B727BB9C1027C
2 changed files with 19 additions and 8 deletions
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25
components/selectors/builder.rs
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@ -36,6 +36,7 @@ use std::slice;
/// (from left to right). Once the process is complete, callers should invoke
/// build(), which transforms the contents of the SelectorBuilder into a heap-
/// allocated Selector and leaves the builder in a drained state.
#[derive(Debug)]
pub struct SelectorBuilder<Impl: SelectorImpl> {
/// The entire sequence of simple selectors, from left to right, without combinators.
///
@ -104,7 +105,7 @@ impl<Impl: SelectorImpl> SelectorBuilder<Impl> {
parsed_slotted: bool,
) -> ThinArc<SpecificityAndFlags, Component<Impl>> {
// Compute the specificity and flags.
let mut spec = SpecificityAndFlags(specificity(self.simple_selectors.iter()));
let mut spec = SpecificityAndFlags(specificity(&*self, self.simple_selectors.iter()));
if parsed_pseudo {
spec.0 |= HAS_PSEUDO_BIT;
}
@ -268,25 +269,35 @@ impl From<Specificity> for u32 {
}
}
fn specificity<Impl>(iter: slice::Iter<Component<Impl>>) -> u32
fn specificity<Impl>(builder: &SelectorBuilder<Impl>, iter: slice::Iter<Component<Impl>>) -> u32
where
Impl: SelectorImpl,
{
complex_selector_specificity(iter).into()
complex_selector_specificity(builder, iter).into()
}
fn complex_selector_specificity<Impl>(mut iter: slice::Iter<Component<Impl>>) -> Specificity
fn complex_selector_specificity<Impl>(
builder: &SelectorBuilder<Impl>,
mut iter: slice::Iter<Component<Impl>>,
) -> Specificity
where
Impl: SelectorImpl,
{
fn simple_selector_specificity<Impl>(
builder: &SelectorBuilder<Impl>,
simple_selector: &Component<Impl>,
specificity: &mut Specificity,
) where
Impl: SelectorImpl,
{
match *simple_selector {
Component::Combinator(..) => unreachable!(),
Component::Combinator(ref combinator) => {
unreachable!(
"Found combinator {:?} in simple selectors vector? {:?}",
combinator,
builder,
);
}
// FIXME(emilio): Spec doesn't define any particular specificity for
// ::slotted(), so apply the general rule for pseudos per:
//
@ -326,7 +337,7 @@ where
},
Component::Negation(ref negated) => {
for ss in negated.iter() {
simple_selector_specificity(&ss, specificity);
simple_selector_specificity(builder, &ss, specificity);
}
},
}
@ -334,7 +345,7 @@ where
let mut specificity = Default::default();
for simple_selector in &mut iter {
simple_selector_specificity(&simple_selector, &mut specificity);
simple_selector_specificity(builder, &simple_selector, &mut specificity);
}
specificity
}