Merge 67281

WebCore/rendering/RenderTextFragment.h

 /*
  * (C) 1999 Lars Knoll (knoll@kde.org)
  * (C) 2000 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007 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 41 matching lines @@
 private:
     virtual void setTextInternal(PassRefPtr<StringImpl>);
     virtual UChar previousCharacter() const;
 
     unsigned m_start;
     unsigned m_end;
     RefPtr<StringImpl> m_contentString;
     RenderObject* m_firstLetter;
 };
 
+inline RenderTextFragment* toRenderTextFragment(RenderObject* object)
+{ 
+    ASSERT(!object || toRenderText(object)->isTextFragment());
+    return static_cast<RenderTextFragment*>(object);
+}
+
+inline const RenderTextFragment* toRenderTextFragment(const RenderObject* object)
+{ 
+    ASSERT(!object || toRenderText(object)->isTextFragment());
+    return static_cast<const RenderTextFragment*>(object);
+}
+
+// This will catch anyone doing an unnecessary cast.
+void toRenderTextFragment(const RenderTextFragment*);
+
 } // namespace WebCore
 
 #endif // RenderTextFragment_h