BESAutoPtr.h

// BESAutoPtr.h
 
// This file is part of fits_handler, a data handler for the OPeNDAP data
// server. 
 
// Copyright (c) 2004,2005 University Corporation for Atmospheric Research
// Author: Patrick West <pwest@ucar.edu> and Jose Garcia <jgarcia@ucar.edu>
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 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
// Lesser General Public License for more details.
// 
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
//
// You can contact University Corporation for Atmospheric Research at
// 3080 Center Green Drive, Boulder, CO 80301
 
// (c) COPYRIGHT University Corporation for Atmostpheric Research 2004-2005
// Please read the full copyright statement in the file COPYRIGHT_UCAR.
//
// Authors:
//      pwest       Patrick West <pwest@ucar.edu>
//      jgarcia     Jose Garcia <jgarcia@ucar.edu>
 
#ifndef BESAutoPtr_h_
#define BESAutoPtr_h_ 1
 
template<class T>
class BESAutoPtr {
private:
    T* p;
    bool _is_vector;
 
    // disable copy constructor.
    template<class U> BESAutoPtr(BESAutoPtr<U> &) { }
 
 
    // disable overloaded = operator.
    template<class U> BESAutoPtr<T>& operator=(BESAutoPtr<U> &)
    {
        return *this;
    }
 
public:
    explicit BESAutoPtr(T* pointed = 0, bool v = false)
    {
        p = pointed;
        _is_vector = v;
    }
 
    ~BESAutoPtr()
    {
        if (_is_vector)
            delete[] p;
        else
            delete p;
        p = 0;
    }
 
    T* set(T *pointed, bool v = false)
    {
        T* temp = p;
        p = pointed;
        _is_vector = v;
        return temp;
    }
 
    T* get() const
    {
        return p;
    }
 
    T* operator ->() const
    {
        return p;
    }
 
    T& operator *() const
    {
        return *p;
    }
 
    T* release()
    {
        T* old = p;
        p = 0;
        return old;
    }
 
    void reset()
    {
        if (_is_vector)
            delete[] p;
        else
            delete p;
        p = 0;
    }
};
 
#endif // BESAutoPtr_h_