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LibWeb: Match styles for pseudo-elements

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Since each selector can only have zero or one pseudo-element, we match
against it as a separate step, before matching the rest of the
selector. This should be faster, but mostly I did this because I could
not figure out how else to stop selectors without a pseudo-element from
matching the pseudo-element, eg so `.foo` styles don't affect
`.foo::before`.
This commit is contained in:
Sam Atkins 2022-02-24 15:54:12 +00:00 • committed by Andreas Kling
parent caef4ec157
commit 7eb7396f8b
6 changed files with 86 additions and 49 deletions
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4
Userland/Libraries/LibWeb/CSS/Selector.h
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@ -1,6 +1,6 @@
/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
* Copyright (c) 2021, Sam Atkins <atkinssj@serenityos.org>
* Copyright (c) 2021-2022, Sam Atkins <atkinssj@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
@ -131,7 +131,7 @@ public:
~Selector();
Vector<CompoundSelector> const& compound_selectors() const { return m_compound_selectors; }
Optional<PseudoElement> pseudo_element() const;
u32 specificity() const;
String serialize() const;