scoped_ptr.h

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/*! \file
  \brief  scoped ptr

  \par Copyright Information

  Copyright (c) 2016 by The DiSTI Corporation.<br>
  11301 Corporate Blvd; Suite 100<br>
  Orlando, Florida 32817<br>
  USA<br>
  <br>
  All rights reserved.<br>

  This Software contains proprietary trade secrets of DiSTI and may not be
reproduced, in whole or part, in any form, or by any means of electronic,
mechanical, or otherwise, without the written permission of DiSTI.  Said
permission may be derived through the purchase of applicable DiSTI product
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Derivative Works based on this or other copyrighted DiSTI Software.

  NO WARRANTY. THE SOFTWARE IS PROVIDED "AS-IS," WITHOUT WARRANTY OF ANY KIND,
AND ANY USE OF THIS SOFTWARE PRODUCT IS AT YOUR OWN RISK. TO THE MAXIMUM EXTENT
PERMITTED BY APPLICABLE LAW, DISTI AND ITS SUPPLIERS DISCLAIM ALL WARRANTIES
AND CONDITIONS, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
IMPLIED WARRANTIES AND CONDITIONS OF MERCHANTABILITY AND/OR FITNESS FOR A
PARTICULAR PURPOSE, TITLE, AND NON-INFRINGEMENT, WITH REGARD TO THE SOFTWARE.

  LIMITATION OF LIABILITY. TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW,
IN NO EVENT SHALL DISTI OR ITS SUPPLIERS BE LIABLE FOR ANY SPECIAL, INCIDENTAL,
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*/
#ifndef INCLUDED_SCOPED_PTR_H
#define INCLUDED_SCOPED_PTR_H

#include "disti_assert.h"

namespace disti
{
    /** The ScopedPtr class template stores a pointer to a dynamically allocated object. 
      * The object pointed to is guaranteed to be deleted, either on destruction of the ScopedPtr, or via an explicit Reset. 
      */
    template< class T >
    class ScopedPtr 
    { 
    public:
        explicit ScopedPtr( T* p = NULL )
            : _p( p )
        {
        }

        ~ScopedPtr()
        {
            delete _p;
            _p = NULL;
        }

        T& operator*() const
        {
            GLS_ASSERT( _p );
            return *_p;
        }

        T* operator->() const
        {
            GLS_ASSERT( _p );
            return _p;
        }

        void Reset( T* p = NULL )
        {
            delete _p;
            _p = p;
        }

        bool IsNull() const
        {
            return NULL == _p;
        }

        T* Get() const { return _p; }

    private:
        ScopedPtr( const ScopedPtr& );
        ScopedPtr& operator=( ScopedPtr& );

        T* _p;
    };

} // namespace disti

#endif