ShallowCopyable.h

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/********************************************************************
**                Image Component Library (ICL)                    **
**                                                                 **
** Copyright (C) 2006-2013 CITEC, University of Bielefeld          **
**                         Neuroinformatics Group                  **
** Website: www.iclcv.org and                                      **
**          http://opensource.cit-ec.de/projects/icl               **
**                                                                 **
** File   : ICLUtils/src/ICLUtils/ShallowCopyable.h                **
** Module : ICLUtils                                               **
** Authors: Christof Elbrechter                                    **
**                                                                 **
**                                                                 **
** GNU LESSER GENERAL PUBLIC LICENSE                               **
** This file may be used under the terms of the GNU Lesser General **
** Public License version 3.0 as published by the                  **
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** included in the packaging of this file.  Please review the      **
** following information to ensure the license requirements will   **
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** The development of this software was supported by the           **
** Excellence Cluster EXC 277 Cognitive Interaction Technology.    **
** The Excellence Cluster EXC 277 is a grant of the Deutsche       **
** Forschungsgemeinschaft (DFG) in the context of the German       **
** Excellence Initiative.                                          **
**                                                                 **
********************************************************************/

#pragma once

#include <ICLUtils/CompatMacros.h>
#include <ICLUtils/SmartPtr.h>

namespace icl{
  namespace utils{


    template<class Impl,class DelOp=PointerDelOp>
    class ShallowCopyable{
      public:
      typedef ShallowCopyable<Impl,DelOp> ParentSC;

      bool isNull() const { return impl.get()==NULL; }

      protected:

      ShallowCopyable(Impl *t=0):impl(t){}

      SmartPtrBase<Impl,DelOp> impl;
    };
  } // namespace utils
}