osbptrlist.h

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// OSB library ************************************************ -*- C++ -*-
/*
  AUTHOR(S): Stephan Broennimann (vb)

  RCS information
   $Name: OSB_060808 $
   $Revision: 1.7 $

  License
   OSB rating and billing library for communication networks
   Copyright (C) 2004, 2005, 2006  OSB systems

   This file may be distributed and/or modify under the terms of the
   GNU General Public License (GPL) as published by the Free Software
   Foundation which is provided in the file LICENSE.GPL included in the
   packaging of this file.

   The file 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.

   Holders of a OSB Commercial License may use this file under the terms
   and conditions of this commercial license.
 */
#ifndef _OSBPTRLIST_H_
#define _OSBPTRLIST_H_

// ************************************************************************
// included header files
// + standard includes
#include <list>
#include <memory>

// + libraries

// + local headers

// + class declarations

// ************************************************************************
// namespace extensions
namespace OSB_LIB {

// ************************************************************************
// forward declarations

// ************************************************************************
// type definitions

// ************************************************************************
// class definitions

    template< typename T, typename Cont = std::list<T*> >
    struct PtrList {
    public:
        typedef typename Cont::size_type      Size;
        typedef typename Cont::iterator       Iter;
        typedef typename Cont::const_iterator ConstIter;
        typedef std::auto_ptr<T> AutoPtr;

    public:
        PtrList();
        ~PtrList();
        PtrList(const PtrList& rhs);
        PtrList& operator=(const PtrList& rhs);

    public:
        bool empty() const;
        Size size() const;
        Iter begin();
        ConstIter begin() const;
        Iter end();
        ConstIter end() const;

        void pushBack(AutoPtr e);
        Iter erase(Iter pos);
        void swap(PtrList& other);

    private:
        Cont cont_;
    };                                  // struct PtrList
}                                       // namespace OSB_LIB

// ************************************************************************
// inline definitions
namespace OSB_LIB {
    template<typename T, typename C>
    inline PtrList<T, C>::PtrList()
    {
    }

    template<typename T, typename C>
    PtrList<T, C>::~PtrList()
    {
        for (Iter e = cont_.end(),
                  i = cont_.begin(); i != e; ++i)
        {
            delete *i;
        }
    }

    template<typename T, typename C>
    PtrList<T, C>::PtrList(const PtrList& rhs)
    {
        ConstIter e = rhs.end();
        ConstIter i = rhs.begin();
        for (; i != e; ++i) {
            T* t = *i;
            if (0 != t) pushBack(t->clone());
            else        cont_.push_back(0);
        }
    }

    template<typename T, typename C>
    PtrList<T, C>& PtrList<T, C>::operator=(const PtrList& rhs)
    {
        if (this != &rhs) {
            PtrList tmp(rhs);
            swap(tmp);
        }
        return *this;
    }

    template<typename T, typename C>
    inline bool PtrList<T, C>::empty() const
    {
        return cont_.empty();
    }

    template<typename T, typename C>
    inline typename PtrList<T, C>::Size PtrList<T, C>::size() const
    {
        return cont_.size();
    }

    template<typename T, typename C>
    inline typename PtrList<T, C>::Iter PtrList<T, C>::begin()
    {
        return cont_.begin();
    }

    template<typename T, typename C>
    inline typename PtrList<T, C>::ConstIter PtrList<T, C>::begin() const
    {
        return cont_.begin();
    }

    template<typename T, typename C>
    inline typename PtrList<T, C>::Iter PtrList<T, C>::end()
    {
        return cont_.end();
    }

    template<typename T, typename C>
    inline typename PtrList<T, C>::ConstIter PtrList<T, C>::end() const
    {
        return cont_.end();
    }

    template<typename T, typename C>
    void PtrList<T, C>::pushBack(AutoPtr e)
    {
        cont_.push_back(e.get());
        e.release();
    }

    template<typename T, typename C>
    typename PtrList<T, C>::Iter PtrList<T, C>::erase(Iter pos)
    {
        T* t = *pos;
        delete t;
        return cont_.erase(pos);
    }

    template<typename T, typename C>
    inline void PtrList<T, C>::swap(PtrList& other)
    {
        cont_.swap(other.cont_);
    }
}                                       // namespace OSB_LIB
#endif                                  // #ifndef _OSBPTRLIST_H_

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