PurgeMemory.

third_party/WebKit/Source/core/css/StyleRule.h

 /*
  * (C) 1999-2003 Lars Knoll (knoll@kde.org)
  * (C) 2002-2003 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2002, 2006, 2008, 2012, 2013 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.
  *
@@ skipping 61 matching lines @@
     {
         if (derefBase())
             destroy();
     }
 #endif // !ENABLE(OILPAN)
 
     // FIXME: There shouldn't be any need for the null parent version.
     PassRefPtrWillBeRawPtr<CSSRule> createCSSOMWrapper(CSSStyleSheet* parentSheet = 0) const;
     PassRefPtrWillBeRawPtr<CSSRule> createCSSOMWrapper(CSSRule* parentRule) const;
 
+    void purgeMemory();
+
     DECLARE_TRACE();
     DEFINE_INLINE_TRACE_AFTER_DISPATCH() { }
     void finalizeGarbageCollectedObject();
 
     // ~StyleRuleBase should be public, because non-public ~StyleRuleBase
     // causes C2248 error : 'blink::StyleRuleBase::~StyleRuleBase' : cannot
     // access protected member declared in class 'blink::StyleRuleBase' when
     // compiling 'source\wtf\refcounted.h' by using msvc.
     ~StyleRuleBase() { }
 
@@ skipping 21 matching lines @@
     ~StyleRule();
 
     const CSSSelectorList& selectorList() const { return m_selectorList; }
     const StylePropertySet& properties() const { return *m_properties; }
     MutableStylePropertySet& mutableProperties();
 
     void wrapperAdoptSelectorList(CSSSelectorList selectors) { m_selectorList = std::move(selectors); }
 
     PassRefPtrWillBeRawPtr<StyleRule> copy() const { return adoptRefWillBeNoop(new StyleRule(*this)); }
 
+    void purgeMemory();
+
     static unsigned averageSizeInBytes();
 
     DECLARE_TRACE_AFTER_DISPATCH();
 
 private:
     StyleRule(CSSSelectorList, PassRefPtrWillBeRawPtr<StylePropertySet>);
     StyleRule(const StyleRule&);
 
     RefPtrWillBeMember<StylePropertySet> m_properties; // Cannot be null.
     CSSSelectorList m_selectorList;
 };
 
 class StyleRuleFontFace : public StyleRuleBase {
 public:
     static PassRefPtrWillBeRawPtr<StyleRuleFontFace> create(PassRefPtrWillBeRawPtr<StylePropertySet> properties)
     {
         return adoptRefWillBeNoop(new StyleRuleFontFace(properties));
     }
 
     ~StyleRuleFontFace();
 
     const StylePropertySet& properties() const { return *m_properties; }
     MutableStylePropertySet& mutableProperties();
 
     PassRefPtrWillBeRawPtr<StyleRuleFontFace> copy() const { return adoptRefWillBeNoop(new StyleRuleFontFace(*this)); }
 
     DECLARE_TRACE_AFTER_DISPATCH();
 
+    void purgeMemory();
+
 private:
     StyleRuleFontFace(PassRefPtrWillBeRawPtr<StylePropertySet>);
     StyleRuleFontFace(const StyleRuleFontFace&);
 
     RefPtrWillBeMember<StylePropertySet> m_properties; // Cannot be null.
 };
 
 class StyleRulePage : public StyleRuleBase {
 public:
     // Adopts the selector list
     static PassRefPtrWillBeRawPtr<StyleRulePage> create(CSSSelectorList selectorList, PassRefPtrWillBeRawPtr<StylePropertySet> properties)
     {
         return adoptRefWillBeNoop(new StyleRulePage(std::move(selectorList), properties));
     }
 
     ~StyleRulePage();
 
     const CSSSelector* selector() const { return m_selectorList.first(); }
     const StylePropertySet& properties() const { return *m_properties; }
     MutableStylePropertySet& mutableProperties();
 
     void wrapperAdoptSelectorList(CSSSelectorList selectors) { m_selectorList = std::move(selectors); }
 
     PassRefPtrWillBeRawPtr<StyleRulePage> copy() const { return adoptRefWillBeNoop(new StyleRulePage(*this)); }
 
+    void purgeMemory();
+
     DECLARE_TRACE_AFTER_DISPATCH();
 
 private:
     StyleRulePage(CSSSelectorList, PassRefPtrWillBeRawPtr<StylePropertySet>);
     StyleRulePage(const StyleRulePage&);
 
     RefPtrWillBeMember<StylePropertySet> m_properties; // Cannot be null.
     CSSSelectorList m_selectorList;
 };
 
 class StyleRuleGroup : public StyleRuleBase {
 public:
     const WillBeHeapVector<RefPtrWillBeMember<StyleRuleBase>>& childRules() const { return m_childRules; }
 
     void wrapperInsertRule(unsigned, PassRefPtrWillBeRawPtr<StyleRuleBase>);
     void wrapperRemoveRule(unsigned);
 
     DECLARE_TRACE_AFTER_DISPATCH();
 
+    void purgeMemory();
+
 protected:
     StyleRuleGroup(Type, WillBeHeapVector<RefPtrWillBeMember<StyleRuleBase>>& adoptRule);
     StyleRuleGroup(const StyleRuleGroup&);
 
 private:
     WillBeHeapVector<RefPtrWillBeMember<StyleRuleBase>> m_childRules;
 };
 
 class StyleRuleMedia : public StyleRuleGroup {
 public:
     static PassRefPtrWillBeRawPtr<StyleRuleMedia> create(PassRefPtrWillBeRawPtr<MediaQuerySet> media, WillBeHeapVector<RefPtrWillBeMember<StyleRuleBase>>& adoptRules)
     {
         return adoptRefWillBeNoop(new StyleRuleMedia(media, adoptRules));
     }
 
     MediaQuerySet* mediaQueries() const { return m_mediaQueries.get(); }
 
     PassRefPtrWillBeRawPtr<StyleRuleMedia> copy() const { return adoptRefWillBeNoop(new StyleRuleMedia(*this)); }
 
+    void purgeMemory() { StyleRuleGroup::purgeMemory(); }
+
     DECLARE_TRACE_AFTER_DISPATCH();
 
 private:
     StyleRuleMedia(PassRefPtrWillBeRawPtr<MediaQuerySet>, WillBeHeapVector<RefPtrWillBeMember<StyleRuleBase>>& adoptRules);
     StyleRuleMedia(const StyleRuleMedia&);
 
     RefPtrWillBeMember<MediaQuerySet> m_mediaQueries;
 };
 
 class StyleRuleSupports : public StyleRuleGroup {
 public:
     static PassRefPtrWillBeRawPtr<StyleRuleSupports> create(const String& conditionText, bool conditionIsSupported, WillBeHeapVector<RefPtrWillBeMember<StyleRuleBase>>& adoptRules)
     {
         return adoptRefWillBeNoop(new StyleRuleSupports(conditionText, conditionIsSupported, adoptRules));
     }
 
     String conditionText() const { return m_conditionText; }
     bool conditionIsSupported() const { return m_conditionIsSupported; }
     PassRefPtrWillBeRawPtr<StyleRuleSupports> copy() const { return adoptRefWillBeNoop(new StyleRuleSupports(*this)); }
 
     DEFINE_INLINE_TRACE_AFTER_DISPATCH() { StyleRuleGroup::traceAfterDispatch(visitor); }
 
+    void purgeMemory() { StyleRuleGroup::purgeMemory(); }
+
 private:
     StyleRuleSupports(const String& conditionText, bool conditionIsSupported, WillBeHeapVector<RefPtrWillBeMember<StyleRuleBase>>& adoptRules);
     StyleRuleSupports(const StyleRuleSupports&);
 
     String m_conditionText;
     bool m_conditionIsSupported;
 };
 
 class StyleRuleViewport : public StyleRuleBase {
 public:
     static PassRefPtrWillBeRawPtr<StyleRuleViewport> create(PassRefPtrWillBeRawPtr<StylePropertySet> properties)
     {
         return adoptRefWillBeNoop(new StyleRuleViewport(properties));
     }
 
     ~StyleRuleViewport();
 
     const StylePropertySet& properties() const { return *m_properties; }
     MutableStylePropertySet& mutableProperties();
 
     PassRefPtrWillBeRawPtr<StyleRuleViewport> copy() const { return adoptRefWillBeNoop(new StyleRuleViewport(*this)); }
 
+    void purgeMemory();
+
     DECLARE_TRACE_AFTER_DISPATCH();
 
 private:
     StyleRuleViewport(PassRefPtrWillBeRawPtr<StylePropertySet>);
     StyleRuleViewport(const StyleRuleViewport&);
 
     RefPtrWillBeMember<StylePropertySet> m_properties; // Cannot be null
 };
 
 // This should only be used within the CSS Parser
 class StyleRuleCharset : public StyleRuleBase {
     USING_FAST_MALLOC_WILL_BE_REMOVED(StyleRuleCharset);
 public:
     static PassRefPtrWillBeRawPtr<StyleRuleCharset> create() { return adoptRefWillBeNoop(new StyleRuleCharset()); }
     DEFINE_INLINE_TRACE_AFTER_DISPATCH() { StyleRuleBase::traceAfterDispatch(visitor); }
 
+    void purgeMemory() { }
+
 private:
     StyleRuleCharset() : StyleRuleBase(Charset) { }
 };
 
 
 #define DEFINE_STYLE_RULE_TYPE_CASTS(Type) \
     DEFINE_TYPE_CASTS(StyleRule##Type, StyleRuleBase, rule, rule->is##Type##Rule(), rule.is##Type##Rule())
 
 DEFINE_TYPE_CASTS(StyleRule, StyleRuleBase, rule, rule->isStyleRule(), rule.isStyleRule());
 DEFINE_STYLE_RULE_TYPE_CASTS(FontFace);
 DEFINE_STYLE_RULE_TYPE_CASTS(Page);
 DEFINE_STYLE_RULE_TYPE_CASTS(Media);
 DEFINE_STYLE_RULE_TYPE_CASTS(Supports);
 DEFINE_STYLE_RULE_TYPE_CASTS(Viewport);
 DEFINE_STYLE_RULE_TYPE_CASTS(Charset);
 
 } // namespace blink
 
 #endif // StyleRule_h