//////////////////////////////////////////////////////////////////////////////

//

// (C) Copyright Ion Gaztanaga 2005-2008.

// (C) Copyright Gennaro Prota 2003 - 2004.

//

// Distributed under the Boost Software License, Version 1.0.

// (See accompanying file LICENSE_1_0.txt or copy at

// http://www.boost.org/LICENSE_1_0.txt)

//

// See http://www.boost.org/libs/interprocess for documentation.

//

//////////////////////////////////////////////////////////////////////////////



#ifndef BOOST_INTERPROCESS_DETAIL_POINTER_TYPE_HPP

#define BOOST_INTERPROCESS_DETAIL_POINTER_TYPE_HPP



#if (defined _MSC_VER) && (_MSC_VER >= 1200)

#  pragma once

#endif



#include <boost/interprocess/detail/config_begin.hpp>

#include <boost/interprocess/detail/workaround.hpp>

#include <boost/interprocess/detail/type_traits.hpp>



namespace boost {

namespace interprocess {

namespace detail {



struct two {char _[2];};



namespace pointer_type_imp {



template <class U> static two  test(...);

template <class U> static char test(typename U::pointer* = 0);



}  //namespace pointer_type_imp {



template <class T>

struct has_pointer_type

{

    static const bool value = sizeof(pointer_type_imp::test<T>(0)) == 1;

};



namespace pointer_type_imp {



template <class T, class D, bool = has_pointer_type<D>::value>

struct pointer_type

{

    typedef typename D::pointer type;

};



template <class T, class D>

struct pointer_type<T, D, false>

{

    typedef T* type;

};



}  //namespace pointer_type_imp {



template <class T, class D>

struct pointer_type

{

    typedef typename pointer_type_imp::pointer_type<T,

        typename detail::remove_reference<D>::type>::type type;

};



}  //namespace detail {

}  //namespace interprocess { 

}  //namespace boost {



#include <boost/interprocess/detail/config_end.hpp>



#endif   //#ifndef BOOST_INTERPROCESS_DETAIL_POINTER_TYPE_HPP



