Implement /content/ combinator.

Source/core/css/CSSSelector.h

 /*
  * Copyright (C) 1999-2003 Lars Knoll (knoll@kde.org)
  *               1999 Waldo Bastian (bastian@kde.org)
  * Copyright (C) 2004, 2006, 2007, 2008, 2009, 2010, 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 114 matching lines @@
         enum Relation {
             Descendant = 0, // "Space" combinator
             Child, // > combinator
             DirectAdjacent, // + combinator
             IndirectAdjacent, // ~ combinator
             SubSelector, // "No space" combinator
             ShadowPseudo, // Special case of shadow DOM pseudo elements
             // FIXME: implement named combinator and replace the following /shadow/, /shadow-all/ and
             // /shadow-deep/ with named combinator's implementation.
             ShadowAll,
-            ShadowDeep
+            ShadowDeep,
+            ShadowContent // /content/ for shadow styling
         };
 
         enum PseudoType {
             PseudoNotParsed = 0,
             PseudoUnknown,
             PseudoEmpty,
             PseudoFirstChild,
             PseudoFirstOfType,
             PseudoLastChild,
             PseudoLastOfType,
@@ skipping 63 matching lines @@
             PseudoFullScreenAncestor,
             PseudoInRange,
             PseudoOutOfRange,
             PseudoUserAgentCustomElement,
             PseudoWebKitCustomElement,
             PseudoCue,
             PseudoFutureCue,
             PseudoPastCue,
             PseudoDistributed,
             PseudoUnresolved,
-            PseudoContent,
             PseudoHost,
             PseudoAncestor
         };
 
         enum MarginBoxType {
             TopLeftCornerMarginBox,
             TopLeftMarginBox,
             TopCenterMarginBox,
             TopRightMarginBox,
             TopRightCornerMarginBox,
@@ skipping 51 matching lines @@
         bool parseNth() const;
         bool matchNth(int count) const;
 
         bool matchesPseudoElement() const;
         bool isUnknownPseudoElement() const;
         bool isCustomPseudoElement() const;
         bool isDirectAdjacentSelector() const { return m_relation == DirectAdjacent; }
         bool isSiblingSelector() const;
         bool isAttributeSelector() const;
         bool isDistributedPseudoElement() const;
-        bool isContentPseudoElement() const;
         bool isHostPseudoClass() const;
 
         // FIXME: selectors with no tagHistory() get a relation() of Descendant. It should instead be
         // None.
         Relation relation() const { return static_cast<Relation>(m_relation); }
 
         bool isLastInSelectorList() const { return m_isLastInSelectorList; }
         void setLastInSelectorList() { m_isLastInSelectorList = true; }
         bool isLastInTagHistory() const { return m_isLastInTagHistory; }
         void setNotLastInTagHistory() { m_isLastInTagHistory = false; }
 
         // http://dev.w3.org/csswg/selectors4/#compound
         bool isCompound() const;
 
         bool isForPage() const { return m_isForPage; }
         void setForPage() { m_isForPage = true; }
 
         bool relationIsAffectedByPseudoContent() const { return m_relationIsAffectedByPseudoContent; }
         void setRelationIsAffectedByPseudoContent() { m_relationIsAffectedByPseudoContent = true; }
 
-        unsigned m_relation           : 3; // enum Relation
+        unsigned m_relation           : 4; // enum Relation
         mutable unsigned m_match      : 4; // enum Match
         mutable unsigned m_pseudoType : 8; // PseudoType
 
     private:
         mutable unsigned m_parsedNth      : 1; // Used for :nth-*
         unsigned m_isLastInSelectorList   : 1;
         unsigned m_isLastInTagHistory     : 1;
         unsigned m_hasRareData            : 1;
         unsigned m_isForPage              : 1;
         unsigned m_tagIsForNamespaceRule  : 1;
@@ skipping 89 matching lines @@
         || m_match == CSSSelector::Contain
         || m_match == CSSSelector::Begin
         || m_match == CSSSelector::End;
 }
 
 inline bool CSSSelector::isDistributedPseudoElement() const
 {
     return m_match == PseudoElement && pseudoType() == PseudoDistributed;
 }
 
-inline bool CSSSelector::isContentPseudoElement() const
-{
-    return m_match == PseudoElement && pseudoType() == PseudoContent;
-}
-
 inline void CSSSelector::setValue(const AtomicString& value)
 {
     ASSERT(m_match != Tag);
     ASSERT(m_pseudoType == PseudoNotParsed);
     // Need to do ref counting manually for the union.
     if (m_hasRareData) {
         m_data.m_rareData->m_value = value;
         return;
     }
     if (m_data.m_value)
@@ skipping 78 matching lines @@
     if (m_hasRareData)
         return m_data.m_rareData->m_value;
     // AtomicString is really just a StringImpl* so the cast below is safe.
     // FIXME: Perhaps call sites could be changed to accept StringImpl?
     return *reinterpret_cast<const AtomicString*>(&m_data.m_value);
 }
 
 } // namespace WebCore
 
 #endif // CSSSelector_h