Add a first pass of a class descendant invalidator, and a containing RuleSetAnalyzer

Source/core/css/RuleFeature.h

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Library General Public License for more details.
  *
  * You should have received a copy of the GNU Library General Public License
  * along with this library; see the file COPYING.LIB.  If not, write to
  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  * Boston, MA 02110-1301, USA.
  *
  */
 
 #ifndef RuleFeature_h
 #define RuleFeature_h
 
+#include "core/css/analyzer/RuleSetAnalyzer.h"
 #include "wtf/Forward.h"
 #include "wtf/HashSet.h"
 #include "wtf/text/AtomicStringHash.h"
 
 namespace WebCore {
 
 class StyleRule;
 class CSSSelector;
 class CSSSelectorList;
 
@@ skipping 38 matching lines @@
         ASSERT(!classValue.isEmpty());
         return classesInRules.contains(classValue);
     }
 
     inline bool hasSelectorForId(const AtomicString& idValue) const
     {
         ASSERT(!idValue.isEmpty());
         return idsInRules.contains(idValue);
     }
 
+    const RuleSetAnalyzer* ruleSetAnalyzer() const;
+    RuleSetAnalyzer* ensureRuleSetAnalyzer();

[esprehn, 2014/01/16 20:11:48]

This should return a reference

[chrishtr, 2014/01/16 20:46:22]

Done.

+
+    // FIXME: move this stuff into the rule set analyzer.
     HashSet<AtomicString> idsInRules;
     HashSet<AtomicString> classesInRules;
     HashSet<AtomicString> attrsInRules;
     Vector<RuleFeature> siblingRules;
     Vector<RuleFeature> uncommonAttributeRules;
 private:
+    RefPtr<RuleSetAnalyzer> m_ruleSetAnalyzer;
+
     void collectFeaturesFromSelectorList(const CSSSelectorList*);
 
     bool m_usesFirstLineRules;
     unsigned m_maxDirectAdjacentSelectors;
 };
 
 } // namespace WebCore
 
 #endif // RuleFeature_h