Branch: refs/heads/main
  Home:   https://github.com/WebKit/WebKit
  Commit: 9e59562c7c83a707bd837c5140827b19b4ea8045
      
https://github.com/WebKit/WebKit/commit/9e59562c7c83a707bd837c5140827b19b4ea8045
  Author: Chris Dumez <[email protected]>
  Date:   2026-01-06 (Tue, 06 Jan 2026)

  Changed paths:
    M Source/WebCore/css/CSSSelectorList.cpp
    M Source/WebCore/css/CSSSelectorList.h

  Log Message:
  -----------
  Simplify CSSSelectorList::componentCount() & CSSSelectorList::listSize()
https://bugs.webkit.org/show_bug.cgi?id=304964

Reviewed by Darin Adler.

Simplify CSSSelectorList::componentCount() & CSSSelectorList::listSize()
now that the selectors are stored in a FixedVector and we know the size.

In a follow-up, we should be able to get rid of the `m_isLastInSelectorList`
flag on CSSSelector but the CSSSelectorList iterator will need updating
first (which will require performance A/B testing).

This change also reduces the use of WTF_ALLOW_UNSAFE_BUFFER_USAGE and
thus improves code safety.

* Source/WebCore/css/CSSSelectorList.cpp:
(WebCore::CSSSelectorList::listSize const):
(WebCore::CSSSelectorList::componentCount const):
* Source/WebCore/css/CSSSelectorList.h:
(WebCore::CSSSelectorList::componentCount const):

Canonical link: https://commits.webkit.org/305179@main



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