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Remove unused StyleRelations.

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MozReview-Commit-ID: ed0NiuY9Ek
This commit is contained in:
Bobby Holley 2017-04-21 18:11:55 -07:00
parent bdb84c7539
commit 60f846b2ca
3 changed files with 14 additions and 54 deletions
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62
components/selectors/matching.rs
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@ -18,39 +18,16 @@ bitflags! {
///
/// This is used to implement efficient sharing.
pub flags StyleRelations: u16 {
/// Whether this element has matched any rule whose matching is
/// determined by its position in the tree (i.e., first-child,
/// nth-child, etc.).
const AFFECTED_BY_CHILD_INDEX = 1 << 1,
/// Whether this flag is affected by any state (i.e., non
/// tree-structural pseudo-class).
const AFFECTED_BY_STATE = 1 << 2,
/// Whether this element is affected by an ID selector.
const AFFECTED_BY_ID_SELECTOR = 1 << 3,
/// Whether this element matches the :empty pseudo class.
const AFFECTED_BY_EMPTY = 1 << 5,
/// Whether this element has a style attribute. Computed
/// externally.
const AFFECTED_BY_STYLE_ATTRIBUTE = 1 << 6,
/// Whether this element is affected by presentational hints. This is
/// computed externally (that is, in Servo).
const AFFECTED_BY_PRESENTATIONAL_HINTS = 1 << 7,
/// Whether this element has pseudo-element styles. Computed externally.
const AFFECTED_BY_PSEUDO_ELEMENTS = 1 << 8,
/// Whether this element has effective animation styles. Computed
/// externally.
const AFFECTED_BY_ANIMATIONS = 1 << 9,
/// Whether this element has effective transition styles. Computed
/// externally.
const AFFECTED_BY_TRANSITIONS = 1 << 10,
}
}
@ -364,21 +341,17 @@ fn matches_simple_selector<E, F>(
false
}
Component::NonTSPseudoClass(ref pc) => {
relation_if!(element.match_non_ts_pseudo_class(pc, relations, flags_setter),
AFFECTED_BY_STATE)
element.match_non_ts_pseudo_class(pc, relations, flags_setter)
}
Component::FirstChild => {
relation_if!(matches_first_child(element, flags_setter),
AFFECTED_BY_CHILD_INDEX)
matches_first_child(element, flags_setter)
}
Component::LastChild => {
relation_if!(matches_last_child(element, flags_setter),
AFFECTED_BY_CHILD_INDEX)
matches_last_child(element, flags_setter)
}
Component::OnlyChild => {
relation_if!(matches_first_child(element, flags_setter) &&
matches_last_child(element, flags_setter),
AFFECTED_BY_CHILD_INDEX)
matches_first_child(element, flags_setter) &&
matches_last_child(element, flags_setter)
}
Component::Root => {
// We never share styles with an element with no parent, so no point
@ -387,36 +360,29 @@ fn matches_simple_selector<E, F>(
}
Component::Empty => {
flags_setter(element, HAS_EMPTY_SELECTOR);
relation_if!(element.is_empty(), AFFECTED_BY_EMPTY)
element.is_empty()
}
Component::NthChild(a, b) => {
relation_if!(matches_generic_nth_child(element, a, b, false, false, flags_setter),
AFFECTED_BY_CHILD_INDEX)
matches_generic_nth_child(element, a, b, false, false, flags_setter)
}
Component::NthLastChild(a, b) => {
relation_if!(matches_generic_nth_child(element, a, b, false, true, flags_setter),
AFFECTED_BY_CHILD_INDEX)
matches_generic_nth_child(element, a, b, false, true, flags_setter)
}
Component::NthOfType(a, b) => {
relation_if!(matches_generic_nth_child(element, a, b, true, false, flags_setter),
AFFECTED_BY_CHILD_INDEX)
matches_generic_nth_child(element, a, b, true, false, flags_setter)
}
Component::NthLastOfType(a, b) => {
relation_if!(matches_generic_nth_child(element, a, b, true, true, flags_setter),
AFFECTED_BY_CHILD_INDEX)
matches_generic_nth_child(element, a, b, true, true, flags_setter)
}
Component::FirstOfType => {
relation_if!(matches_generic_nth_child(element, 0, 1, true, false, flags_setter),
AFFECTED_BY_CHILD_INDEX)
matches_generic_nth_child(element, 0, 1, true, false, flags_setter)
}
Component::LastOfType => {
relation_if!(matches_generic_nth_child(element, 0, 1, true, true, flags_setter),
AFFECTED_BY_CHILD_INDEX)
matches_generic_nth_child(element, 0, 1, true, true, flags_setter)
}
Component::OnlyOfType => {
relation_if!(matches_generic_nth_child(element, 0, 1, true, false, flags_setter) &&
matches_generic_nth_child(element, 0, 1, true, true, flags_setter),
AFFECTED_BY_CHILD_INDEX)
matches_generic_nth_child(element, 0, 1, true, false, flags_setter) &&
matches_generic_nth_child(element, 0, 1, true, true, flags_setter)
}
Component::Negation(ref negated) => {
!negated.iter().all(|s| {