Sibling invalidation sets

third_party/WebKit/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/CoreExport.h"
 #include "core/css/CSSSelector.h"
-#include "core/css/invalidation/InvalidationSet.h"
+#include "core/css/invalidation/InvalidationData.h"
 #include "platform/heap/Handle.h"
 #include "wtf/Forward.h"
 #include "wtf/HashSet.h"
 #include "wtf/text/AtomicStringHash.h"
 
 namespace blink {
 
+struct InvalidationLists;
 class QualifiedName;
 class RuleData;
 class SpaceSplitString;
 class StyleRule;
 
 struct RuleFeature {
     ALLOW_ONLY_INLINE_ALLOCATION();
 public:
     RuleFeature(StyleRule*, unsigned selectorIndex, bool hasDocumentSecurityOrigin);
 
     DECLARE_TRACE();
 
     RawPtrWillBeMember<StyleRule> rule;
     unsigned selectorIndex;
     bool hasDocumentSecurityOrigin;
 };
 
-using InvalidationSetVector = Vector<RefPtr<InvalidationSet>, 8>;
-
 class CORE_EXPORT RuleFeatureSet {
     DISALLOW_ALLOCATION();
 public:
     RuleFeatureSet();
     ~RuleFeatureSet();
 
     void add(const RuleFeatureSet&);
     void clear();
 
     void collectFeaturesFromRuleData(const RuleData&);
 
     bool usesSiblingRules() const { return !siblingRules.isEmpty(); }
     bool usesFirstLineRules() const { return m_metadata.usesFirstLineRules; }
     bool usesWindowInactiveSelector() const { return m_metadata.usesWindowInactiveSelector; }
 
     unsigned maxDirectAdjacentSelectors() const { return m_metadata.maxDirectAdjacentSelectors; }
-    void setMaxDirectAdjacentSelectors(unsigned value)  { m_metadata.maxDirectAdjacentSelectors = std::max(value, m_metadata.maxDirectAdjacentSelectors); }
 
     bool hasSelectorForAttribute(const AtomicString& attributeName) const
     {
         ASSERT(!attributeName.isEmpty());
         return m_attributeInvalidationSets.contains(attributeName);
     }
 
     bool hasSelectorForClass(const AtomicString& classValue) const
     {
         ASSERT(!classValue.isEmpty());
         return m_classInvalidationSets.contains(classValue);
     }
 
     bool hasSelectorForId(const AtomicString& idValue) const { return m_idInvalidationSets.contains(idValue); }
 
-    void collectInvalidationSetsForClass(InvalidationSetVector&, Element&, const AtomicString& className) const;
-    void collectInvalidationSetsForId(InvalidationSetVector&, Element&, const AtomicString& id) const;
-    void collectInvalidationSetsForAttribute(InvalidationSetVector&, Element&, const QualifiedName& attributeName) const;
-    void collectInvalidationSetsForPseudoClass(InvalidationSetVector&, Element&, CSSSelector::PseudoType) const;
+    // Collect descendant and sibling invalidation sets.
+    void collectInvalidationSetsForClass(InvalidationLists&, Element&, const AtomicString& className) const;
+    void collectInvalidationSetsForId(InvalidationLists&, Element&, const AtomicString& id) const;
+    void collectInvalidationSetsForAttribute(InvalidationLists&, Element&, const QualifiedName& attributeName) const;
+    void collectInvalidationSetsForPseudoClass(InvalidationLists&, Element&, CSSSelector::PseudoType) const;
 
     bool hasIdsInSelectors() const
     {
         return m_idInvalidationSets.size() > 0;
     }
 
     DECLARE_TRACE();
 
     WillBeHeapVector<RuleFeature> siblingRules;
     WillBeHeapVector<RuleFeature> uncommonAttributeRules;
 
 protected:
-    InvalidationSet* invalidationSetForSelector(const CSSSelector&);
+    InvalidationSet* invalidationSetForSelector(const CSSSelector&, InvalidationType);
 
 private:
-    using InvalidationSetMap = HashMap<AtomicString, RefPtr<InvalidationSet>>;
-    using PseudoTypeInvalidationSetMap = HashMap<CSSSelector::PseudoType, RefPtr<InvalidationSet>, WTF::IntHash<unsigned>, WTF::UnsignedWithZeroKeyHashTraits<unsigned>>;
+    using InvalidationSetMap = HashMap<AtomicString, RefPtr<InvalidationData>>;
+    using PseudoTypeInvalidationSetMap = HashMap<CSSSelector::PseudoType, RefPtr<InvalidationData>, WTF::IntHash<unsigned>, WTF::UnsignedWithZeroKeyHashTraits<unsigned>>;
 
     struct FeatureMetadata {
         DISALLOW_ALLOCATION();
         FeatureMetadata()
             : usesFirstLineRules(false)
             , usesWindowInactiveSelector(false)
             , foundSiblingSelector(false)
             , maxDirectAdjacentSelectors(0)
         { }
         void add(const FeatureMetadata& other);
         void clear();
 
         bool usesFirstLineRules;
         bool usesWindowInactiveSelector;
         bool foundSiblingSelector;
         unsigned maxDirectAdjacentSelectors;
     };
 
     void collectFeaturesFromSelector(const CSSSelector&, FeatureMetadata&);
 
-    InvalidationSet& ensureClassInvalidationSet(const AtomicString& className);
-    InvalidationSet& ensureAttributeInvalidationSet(const AtomicString& attributeName);
-    InvalidationSet& ensureIdInvalidationSet(const AtomicString& attributeName);
-    InvalidationSet& ensurePseudoInvalidationSet(CSSSelector::PseudoType);
+    InvalidationData& ensureClassInvalidationData(const AtomicString& className);
+    InvalidationData& ensureAttributeInvalidationData(const AtomicString& attributeName);
+    InvalidationData& ensureIdInvalidationData(const AtomicString& id);
+    InvalidationData& ensurePseudoInvalidationData(CSSSelector::PseudoType);
+
+    InvalidationSet& ensureClassInvalidationSet(const AtomicString& className, InvalidationType type) { return ensureClassInvalidationData(className).ensureInvalidationSet(type); }
+    InvalidationSet& ensureAttributeInvalidationSet(const AtomicString& attributeName, InvalidationType type) { return ensureAttributeInvalidationData(attributeName).ensureInvalidationSet(type); }
+    InvalidationSet& ensureIdInvalidationSet(const AtomicString& id, InvalidationType type) { return ensureIdInvalidationData(id).ensureInvalidationSet(type); }
+    InvalidationSet& ensurePseudoInvalidationSet(CSSSelector::PseudoType pseudoType, InvalidationType type) { return ensurePseudoInvalidationData(pseudoType).ensureInvalidationSet(type); }
 
     void updateInvalidationSets(const RuleData&);
     void updateInvalidationSetsForContentAttribute(const RuleData&);
 
     struct InvalidationSetFeatures {
         DISALLOW_ALLOCATION();
         InvalidationSetFeatures()
-            : customPseudoElement(false)
+            : maxDirectAdjacentSelectors(std::numeric_limits<unsigned>::max())
+            , customPseudoElement(false)
             , hasBeforeOrAfter(false)
             , treeBoundaryCrossing(false)
             , adjacent(false)
             , insertionPointCrossing(false)
             , forceSubtree(false)
         { }
 
-        bool useSubtreeInvalidation() const { return forceSubtree || adjacent; }
-
         Vector<AtomicString> classes;
         Vector<AtomicString> attributes;
         AtomicString id;
         AtomicString tagName;
+        unsigned maxDirectAdjacentSelectors;
         bool customPseudoElement;
         bool hasBeforeOrAfter;
         bool treeBoundaryCrossing;
         bool adjacent;
         bool insertionPointCrossing;
         bool forceSubtree;
     };
 
     static bool extractInvalidationSetFeature(const CSSSelector&, InvalidationSetFeatures&);
 
     enum UseFeaturesType { UseFeatures, ForceSubtree };
 
     std::pair<const CSSSelector*, UseFeaturesType> extractInvalidationSetFeatures(const CSSSelector&, InvalidationSetFeatures&, bool negated);
 
     void addFeaturesToInvalidationSet(InvalidationSet&, const InvalidationSetFeatures&);
-    void addFeaturesToInvalidationSets(const CSSSelector&, InvalidationSetFeatures&);
+    void addFeaturesToInvalidationSets(const CSSSelector*, InvalidationSetFeatures* siblingFeatures, InvalidationSetFeatures& descendantFeatures);
 
     void addClassToInvalidationSet(const AtomicString& className, Element&);
 
     FeatureMetadata m_metadata;
     InvalidationSetMap m_classInvalidationSets;
     InvalidationSetMap m_attributeInvalidationSets;
     InvalidationSetMap m_idInvalidationSets;
     PseudoTypeInvalidationSetMap m_pseudoInvalidationSets;
+
+    friend class RuleFeatureSetTest;
 };
 
 } // namespace blink
 
 WTF_ALLOW_MOVE_AND_INIT_WITH_MEM_FUNCTIONS(blink::RuleFeature);
 
 #endif // RuleFeature_h