autoarray.h

Go to the documentation of this file.

 
 
 
// Copyright (C) 1997-2020 by Pawel Pilarczyk.
//
// This file is part of my research software package. This is free software:
// you can redistribute it and/or modify it under the terms of the GNU
// General Public License as published by the Free Software Foundation,
// either version 3 of the License, or (at your option) any later version.
//
// This software 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 General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this software; see the file "license.txt". If not,
// please, see <https://www.gnu.org/licenses/>.
 
// Started on April 10, 2011. Last revision: April 10, 2011.
 
 
#ifndef _CHOMP_STRUCT_AUTOARRAY_H_
#define _CHOMP_STRUCT_AUTOARRAY_H_
 
 
namespace chomp {
namespace homology {
 
 
// --------------------------------------------------
// ------------------- auto_array -------------------
// --------------------------------------------------
 
template <typename T>
class auto_array
{
private:
        T *ptr;
 
public:
        typedef T element_type;
 
        explicit auto_array (element_type *p = 0) throw (): ptr (p) {}
 
        auto_array (auto_array &a) throw (): ptr (a. release ()) {}
 
        auto_array &operator = (auto_array &a) throw ()
        {
                reset (a. release ());
                return *this;
        }
 
        ~auto_array ()
        {
                if (ptr)
                        delete [] ptr;
                return;
        }
 
        element_type *get () const throw ()
        {
                return ptr;
        }
 
        element_type *release () throw ()
        {
                element_type *tmp = ptr;
                ptr = 0;
                return tmp;
        }
 
        void reset (element_type *p = 0) throw ()
        {
                if (p != ptr)
                {
                        if (ptr)
                                delete [] ptr;
                        ptr = p;
                }
        }
 
}; /* class auto_array */
 
 
} // namespace homology
} // namespace chomp
 
#endif // _CHOMP_STRUCT_AUTOARRAY_H_