[webkit-changes] [WebKit/WebKit] 8a947a: [CSS] Fix wrong scoping roots with nested @scope

[Matthieu Dubet]

  Branch: refs/heads/main
  Home:   https://github.com/WebKit/WebKit
  Commit: 8a947a7a91b87990311a8accea11c2acf7446439
      https://github.com/WebKit/WebKit/commit/8a947a7a91b87990311a8accea11c2acf7446439
  Author: Matthieu Dubet <m_dubet at apple.com>
  Date:   2023-12-12 (Tue, 12 Dec 2023)

  Changed paths:
    M LayoutTests/fast/css/scope-at-rule-expected.html
    M LayoutTests/fast/css/scope-at-rule.html
    M Source/WebCore/style/RuleSet.cpp

  Log Message:
  -----------
  [CSS] Fix wrong scoping roots with nested @scope
https://bugs.webkit.org/show_bug.cgi?id=266248
rdar://119511916

Reviewed by Tim Nguyen.

The @scope are stored from child to parent (innermost to outermost)
while the scoping roots are evaluated in the reverse order.
This patch uses outermost to innermost for everything.

* LayoutTests/fast/css/scope-at-rule-expected.html:
* LayoutTests/fast/css/scope-at-rule.html:
* Source/WebCore/style/RuleSet.cpp:
(WebCore::Style::RuleSet::scopeRulesFor const):

Canonical link: https://commits.webkit.org/271941@main