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/****************************************************************************
* Copyright (C) 2009-2015 EPAM Systems
*
* This file is part of Indigo toolkit.
*
* This file may be distributed and/or modified under the terms of the
* GNU General Public License version 3 as published by the Free Software
* Foundation and appearing in the file LICENSE.GPL included in the
* packaging of this file.
*
* This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
* WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
***************************************************************************/
#ifndef __auto_ptr__
#define __auto_ptr__
#include "base_cpp/exception.h"
namespace indigo {
DECL_EXCEPTION(AutoPtrError);
template <typename T> class AutoPtr
{
public:
explicit AutoPtr (T *ptr = 0)
{
_ptr = ptr;
}
~AutoPtr ()
{
delete _ptr;
}
T * get () const
{
return _ptr;
}
T & ref () const
{
if (_ptr == 0)
throw Error("no reference");
return *_ptr;
}
T * operator -> () const
{
if (_ptr == 0)
throw Error("no reference");
return _ptr;
}
T * release ()
{
if (_ptr == 0)
throw Error("nothing to release");
T *ptr = _ptr;
_ptr = 0;
return ptr;
}
void reset (T *ptr)
{
if (ptr != _ptr)
{
delete _ptr;
_ptr = ptr;
}
}
void free ()
{
reset(0);
}
AutoPtr<T>& operator= (T *ptr)
{
reset(ptr);
return *this;
}
void create ()
{
reset(new T());
}
template<typename A>
void create (A &a)
{
reset(new T(a));
}
DECL_TPL_ERROR(AutoPtrError);
protected:
T *_ptr;
private:
AutoPtr (const AutoPtr &); // no implicit copy
AutoPtr<T> & operator = (const AutoPtr<T> &other);
};
}
#endif
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