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Improve some ergonomics around pseudo-elements.

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I think a lot of the current indirection predates the crate merge.

MozReview-Commit-ID: FM28dgZa5go
This commit is contained in:
Bobby Holley 2017-03-31 17:46:48 -07:00
parent e8ed3e0b7f
commit 1ff008caa3
5 changed files with 53 additions and 46 deletions
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35
components/style/gecko/selector_parser.rs
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@ -55,6 +55,31 @@ impl PseudoElement {
self.1
}
/// Whether this pseudo-element is ::before or ::after.
#[inline]
pub fn is_before_or_after(&self) -> bool {
*self.as_atom() == atom!(":before") ||
*self.as_atom() == atom!(":after")
}
/// Whether this pseudo-element is eagerly-cascaded.
#[inline]
pub fn is_eager(&self) -> bool {
self.is_before_or_after()
}
/// Whether this pseudo-element is lazily-cascaded.
#[inline]
pub fn is_lazy(&self) -> bool {
!self.is_eager() && !self.is_precomputed()
}
/// Whether this pseudo-element is precomputed.
#[inline]
pub fn is_precomputed(&self) -> bool {
self.is_anon_box()
}
/// Construct a pseudo-element from an `Atom`, receiving whether it is also
/// an anonymous box, and don't check it on release builds.
///
@ -398,7 +423,8 @@ impl SelectorImpl {
///
/// We resolve the others lazily, see `Servo_ResolvePseudoStyle`.
pub fn pseudo_element_cascade_type(pseudo: &PseudoElement) -> PseudoElementCascadeType {
if Self::pseudo_is_before_or_after(pseudo) {
if pseudo.is_eager() {
debug_assert!(!pseudo.is_anon_box());
return PseudoElementCascadeType::Eager
}
@ -423,13 +449,6 @@ impl SelectorImpl {
include!("generated/gecko_pseudo_element_helper.rs")
}
#[inline]
/// Returns whether the given pseudo-element is `::before` or `::after`.
pub fn pseudo_is_before_or_after(pseudo: &PseudoElement) -> bool {
*pseudo.as_atom() == atom!(":before") ||
*pseudo.as_atom() == atom!(":after")
}
#[inline]
/// Returns the relevant state flag for a given non-tree-structural
/// pseudo-class.