[webkit-changes] [WebKit/WebKit] e07871: [CSS Nesting] Don't serialize first implicit style...

[Matthieu Dubet]

  Branch: refs/heads/main
  Home:   https://github.com/WebKit/WebKit
  Commit: e07871e21ea87327296cc3bc0003266655fa1bc0
      https://github.com/WebKit/WebKit/commit/e07871e21ea87327296cc3bc0003266655fa1bc0
  Author: Matthieu Dubet <m_dubet at apple.com>
  Date:   2023-05-12 (Fri, 12 May 2023)

  Changed paths:
    M LayoutTests/imported/w3c/web-platform-tests/css/css-nesting/parsing-expected.txt
    M LayoutTests/imported/w3c/web-platform-tests/css/css-nesting/parsing.html
    M LayoutTests/imported/w3c/web-platform-tests/css/css-nesting/serialize-group-rules-with-decls.tentative-expected.txt
    M LayoutTests/imported/w3c/web-platform-tests/css/css-nesting/serialize-group-rules-with-decls.tentative.html
    M Source/WebCore/css/CSSGroupingRule.cpp
    M Source/WebCore/css/CSSStyleRule.cpp

  Log Message:
  -----------
  [CSS Nesting] Don't serialize first implicit style rule inside group rule
https://bugs.webkit.org/show_bug.cgi?id=256647
rdar://109208359

Reviewed by Antti Koivisto.

Orphaned properties in group rule are implicitly added
to a style rule with '&' as selector ;
this implicit style rule should not be serialized.

* LayoutTests/imported/w3c/web-platform-tests/css/css-nesting/parsing-expected.txt:
* LayoutTests/imported/w3c/web-platform-tests/css/css-nesting/parsing.html:
* LayoutTests/imported/w3c/web-platform-tests/css/css-nesting/serialize-group-rules-with-decls.tentative-expected.txt:
* LayoutTests/imported/w3c/web-platform-tests/css/css-nesting/serialize-group-rules-with-decls.tentative.html:

 Import from WPT

* Source/WebCore/css/CSSGroupingRule.cpp:
(WebCore::CSSGroupingRule::appendCSSTextForItems const):
(WebCore::CSSGroupingRule::cssTextForDeclsAndRules const):
* Source/WebCore/css/CSSStyleRule.cpp:
(WebCore::CSSStyleRule::cssTextForDeclsAndRules const):

This behavior only concerns group rule, not style rule (where a property can't be orphaned)

Canonical link: https://commits.webkit.org/264003@main