Make collection caching code more consistent

Source/core/dom/ContainerNode.h

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2009, 2010, 2011, 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.
  *
  * 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 ContainerNode_h
 #define ContainerNode_h
 
 #include "bindings/core/v8/ExceptionStatePlaceholder.h"
 #include "core/dom/Node.h"
+#include "core/html/CollectionType.h"
 #include "wtf/OwnPtr.h"
 #include "wtf/Vector.h"
 
 namespace blink {
 
 class ClassCollection;
 class ExceptionState;
 class FloatPoint;
 class HTMLCollection;
 class StaticNodeList;
@@ skipping 139 matching lines @@
 protected:
     ContainerNode(TreeScope*, ConstructionType = CreateContainer);
 
 #if !ENABLE(OILPAN)
     void removeDetachedChildren();
 #endif
 
     void setFirstChild(Node* child) { m_firstChild = child; }
     void setLastChild(Node* child) { m_lastChild = child; }
 
+    // Utility functions for NodeListsNodeData API.
+    template <typename Collection> PassRefPtrWillBeRawPtr<Collection> ensureCachedCollection(CollectionType);
+    template <typename Collection> PassRefPtrWillBeRawPtr<Collection> ensureCachedCollection(CollectionType, const AtomicString& name);
+    template <typename Collection> PassRefPtrWillBeRawPtr<Collection> ensureCachedCollection(CollectionType, const AtomicString& namespaceURI, const AtomicString& localName);
+    template <typename Collection> Collection* cachedCollection(CollectionType);
+
 private:
+    NodeListsNodeData& ensureNodeLists();
     void removeBetween(Node* previousChild, Node* nextChild, Node& oldChild);
     void insertBeforeCommon(Node& nextChild, Node& oldChild);
     void appendChildCommon(Node& child);
     void updateTreeAfterInsertion(Node& child);
     void willRemoveChildren();
     void willRemoveChild(Node& child);
     void removeDetachedChildrenInContainer(ContainerNode&);
     void addChildNodesToDeletionQueue(Node*&, Node*&, ContainerNode&);
 
     void notifyNodeInsertedInternal(Node&, NodeVector& postInsertionNotificationTargets);
@@ skipping 120 matching lines @@
 inline void getChildNodes(Node& node, NodeVector& nodes)
 {
     ASSERT(!nodes.size());
     for (Node* child = node.firstChild(); child; child = child->nextSibling())
         nodes.append(child);
 }
 
 } // namespace blink
 
 #endif // ContainerNode_h