From 1bf1084f2b10c3b47fd1a588d85d21ed0eb41d0c Mon Sep 17 00:00:00 2001
From: Lorry Tar Creator <lorry-tar-importer@lorry>
Date: Tue, 27 Jun 2017 06:07:23 +0000
Subject: webkitgtk-2.16.5

---
 Source/WebCore/css/DocumentRuleSets.h | 68 ++++++++++++++++++++++++-----------
 1 file changed, 48 insertions(+), 20 deletions(-)

(limited to 'Source/WebCore/css/DocumentRuleSets.h')

diff --git a/Source/WebCore/css/DocumentRuleSets.h b/Source/WebCore/css/DocumentRuleSets.h
index 00a271938..7cdb889a1 100644
--- a/Source/WebCore/css/DocumentRuleSets.h
+++ b/Source/WebCore/css/DocumentRuleSets.h
@@ -20,13 +20,13 @@
  *
  */
 
-#ifndef DocumentRuleSets_h
-#define DocumentRuleSets_h
+#pragma once
 
+#include "CSSDefaultStyleSheets.h"
 #include "RuleFeature.h"
 #include "RuleSet.h"
-
-#include <wtf/OwnPtr.h>
+#include <memory>
+#include <wtf/HashMap.h>
 #include <wtf/RefPtr.h>
 #include <wtf/Vector.h>
 
@@ -34,38 +34,66 @@ namespace WebCore {
 
 class CSSStyleRule;
 class CSSStyleSheet;
-class DocumentStyleSheetCollection;
+class ExtensionStyleSheets;
 class InspectorCSSOMWrappers;
 class MediaQueryEvaluator;
-class RuleSet;
-class StyleScopeResolver;
 
 class DocumentRuleSets {
 public:
     DocumentRuleSets();
     ~DocumentRuleSets();
-    RuleSet* authorStyle() const { return m_authorStyle.get(); }
+    
+    bool isAuthorStyleDefined() const { return m_isAuthorStyleDefined; }
+    RuleSet& authorStyle() const { return *m_authorStyle.get(); }
     RuleSet* userStyle() const { return m_userStyle.get(); }
-    RuleFeatureSet& features() { return m_features; }
-    const RuleFeatureSet& features() const { return m_features; }
+    const RuleFeatureSet& features() const;
     RuleSet* sibling() const { return m_siblingRuleSet.get(); }
     RuleSet* uncommonAttribute() const { return m_uncommonAttributeRuleSet.get(); }
+    RuleSet* ancestorClassRules(const AtomicString& className) const;
+
+    struct AttributeRules {
+        WTF_MAKE_FAST_ALLOCATED;
+    public:
+        Vector<const CSSSelector*> attributeSelectors;
+        std::unique_ptr<RuleSet> ruleSet;
+    };
+    const AttributeRules* ancestorAttributeRulesForHTML(const AtomicString&) const;
 
-    void initUserStyle(DocumentStyleSheetCollection&, const MediaQueryEvaluator&, StyleResolver&);
+    void initUserStyle(ExtensionStyleSheets&, const MediaQueryEvaluator&, StyleResolver&);
     void resetAuthorStyle();
-    void appendAuthorStyleSheets(unsigned firstNew, const Vector<RefPtr<CSSStyleSheet>>&, MediaQueryEvaluator*, InspectorCSSOMWrappers&, bool isViewSource, StyleResolver*);
+    void appendAuthorStyleSheets(const Vector<RefPtr<CSSStyleSheet>>&, MediaQueryEvaluator*, InspectorCSSOMWrappers&, StyleResolver*);
 
-    void collectFeatures(bool isViewSource, StyleScopeResolver*);
+    RuleFeatureSet& mutableFeatures();
 
 private:
+    void collectFeatures() const;
     void collectRulesFromUserStyleSheets(const Vector<RefPtr<CSSStyleSheet>>&, RuleSet& userStyle, const MediaQueryEvaluator&, StyleResolver&);
-    OwnPtr<RuleSet> m_authorStyle;
-    OwnPtr<RuleSet> m_userStyle;
-    RuleFeatureSet m_features;
-    OwnPtr<RuleSet> m_siblingRuleSet;
-    OwnPtr<RuleSet> m_uncommonAttributeRuleSet;
+
+    bool m_isAuthorStyleDefined { false };
+    std::unique_ptr<RuleSet> m_authorStyle;
+    std::unique_ptr<RuleSet> m_userStyle;
+
+    mutable RuleFeatureSet m_features;
+    mutable unsigned m_defaultStyleVersionOnFeatureCollection { 0 };
+    mutable std::unique_ptr<RuleSet> m_siblingRuleSet;
+    mutable std::unique_ptr<RuleSet> m_uncommonAttributeRuleSet;
+    mutable HashMap<AtomicString, std::unique_ptr<RuleSet>> m_ancestorClassRuleSets;
+    mutable HashMap<AtomicString, std::unique_ptr<AttributeRules>> m_ancestorAttributeRuleSetsForHTML;
 };
 
-} // namespace WebCore
+inline const RuleFeatureSet& DocumentRuleSets::features() const
+{
+    if (m_defaultStyleVersionOnFeatureCollection < CSSDefaultStyleSheets::defaultStyleVersion)
+        collectFeatures();
+    return m_features;
+}
+
+// FIXME: There should be just the const version.
+inline RuleFeatureSet& DocumentRuleSets::mutableFeatures()
+{
+    if (m_defaultStyleVersionOnFeatureCollection < CSSDefaultStyleSheets::defaultStyleVersion)
+        collectFeatures();
+    return m_features;
+}
 
-#endif // DocumentRuleSets_h
+} // namespace WebCore
-- 
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