Add macros to define comparison operators to compare by reference or pointer interchangeably

Source/core/dom/Node.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, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  *
  * 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
@@ skipping 866 matching lines @@
 {
     return !node || node->isDocumentNode() || node->isShadowRoot();
 }
 
 inline bool isTreeScopeRoot(const Node& node)
 {
     return node.isDocumentNode() || node.isShadowRoot();
 }
 
 // Allow equality comparisons of Nodes by reference or pointer, interchangeably.
-inline bool operator==(const Node& a, const Node& b) { return &a == &b; }
-inline bool operator==(const Node& a, const Node* b) { return &a == b; }
-inline bool operator==(const Node* a, const Node& b) { return a == &b; }
-inline bool operator!=(const Node& a, const Node& b) { return !(a == b); }
-inline bool operator!=(const Node& a, const Node* b) { return !(a == b); }
-inline bool operator!=(const Node* a, const Node& b) { return !(a == b); }
-inline bool operator==(const PassRefPtr<Node>& a, const Node& b) { return a.get() == &b; }
-inline bool operator==(const Node& a, const PassRefPtr<Node>& b) { return &a == b.get(); }
-inline bool operator!=(const PassRefPtr<Node>& a, const Node& b) { return !(a == b); }
-inline bool operator!=(const Node& a, const PassRefPtr<Node>& b) { return !(a == b); }
+DEFINE_COMPARISON_OPERATORS_WITH_REFERENCES_REFCOUNTED(Node)
 
 
 #define DEFINE_NODE_TYPE_CASTS(thisType, predicate) \
     template<typename T> inline thisType* to##thisType(const RefPtr<T>& node) { return to##thisType(node.get()); } \
     DEFINE_TYPE_CASTS(thisType, Node, node, node->predicate, node.predicate)
 
 // This requires isClassName(const Node&).
 #define DEFINE_NODE_TYPE_CASTS_WITH_FUNCTION(thisType) \
     template<typename T> inline thisType* to##thisType(const RefPtr<T>& node) { return to##thisType(node.get()); } \
     DEFINE_TYPE_CASTS(thisType, Node, node, is##thisType(*node), is##thisType(node))
 
 #define DEFINE_NODE_FACTORY(T) \
     inline static PassRefPtrWillBeRawPtr<T> create(Document& document) \
     { \
         return adoptRefWillBeRefCountedGarbageCollected(new T(document)); \
     }
 
 } // namespace WebCore
 
 #ifndef NDEBUG
 // Outside the WebCore namespace for ease of invocation from gdb.
 void showNode(const WebCore::Node*);
 void showTree(const WebCore::Node*);
 void showNodePath(const WebCore::Node*);
 #endif
 
 #endif