File indexing completed on 2024-04-28 15:23:52

 /*
  * Copyright (C) 2000 Lars Knoll (knoll@kde.org)
  *           (C) 2000 Antti Koivisto (koivisto@kde.org)
  *           (C) 2000 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2003, 2005, 2008 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 DataRef_h
 #define DataRef_h
 
 #include <wtf/RefPtr.h>
 
 namespace khtml
 {
 
 template <class DATA>
 class DataRef
 {
 public:
     DataRef()
     {
         data = nullptr;
     }
 
     DataRef(const DataRef<DATA> &d)
     {
         data = d.data;
         data->ref();
     }
 
     ~DataRef()
     {
         if (data) {
             data->deref();
         }
     }
 
     const DATA *operator->() const
     {
         return data;
     }
 
     const DATA *get() const
     {
         return data;
     }
 
     DATA *access()
     {
         if (!data->hasOneRef()) {
             data->deref();
             data = new DATA(*data);
             data->ref();
         }
         return data;
     }
 
     void init()
     {
         data = new DATA;
         data->ref();
     }
 
     DataRef<DATA> &operator=(const DataRef<DATA> &d)
     {
         if (data == d.data) {
             return *this;
         }
         if (data) {
             data->deref();
         }
         data = d.data;
 
         data->ref();
 
         return *this;
     }
 
     bool operator == (const DataRef<DATA> &o) const
     {
         return (*data == *(o.data));
     }
 
     bool operator != (const DataRef<DATA> &o) const
     {
         return (*data != *(o.data));
     }
 
 private:
     DATA *data;
 };
 
 } // namespace khtml
 
 #endif // DataRef_h