

#ifndef BOOST_MPL_AUX_MSVC_ETI_BASE_HPP_INCLUDED

#define BOOST_MPL_AUX_MSVC_ETI_BASE_HPP_INCLUDED



// Copyright Aleksey Gurtovoy 2001-2004

//

// 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/mpl for documentation.



// $Source$

// $Date: 2004-11-27 20:39:23 -0500 (Sat, 27 Nov 2004) $

// $Revision: 26324 $



#include <boost/mpl/aux_/is_msvc_eti_arg.hpp>

#include <boost/mpl/aux_/config/eti.hpp>

#include <boost/mpl/aux_/config/gcc.hpp>

#include <boost/mpl/aux_/config/workaround.hpp>



namespace boost { namespace mpl { namespace aux {



#if defined(BOOST_MPL_CFG_MSVC_70_ETI_BUG)



template< bool > struct msvc_eti_base_impl

{

    template< typename T > struct result_

        : T

    {

        typedef T type;

    };

};



template<> struct msvc_eti_base_impl<true>

{

    template< typename T > struct result_

    {

        typedef result_ type;

        typedef result_ first;

        typedef result_ second;

        typedef result_ tag;

        enum { value = 0 };

    };

};



template< typename T > struct msvc_eti_base

    : msvc_eti_base_impl< is_msvc_eti_arg<T>::value >

        ::template result_<T>

{

};



#else // !BOOST_MPL_CFG_MSVC_70_ETI_BUG



template< typename T > struct msvc_eti_base

    : T

{

#if BOOST_WORKAROUND(BOOST_MPL_CFG_GCC, BOOST_TESTED_AT(0x0304))

    msvc_eti_base();

#endif

    typedef T type;

};



#endif 



template<> struct msvc_eti_base<int>

{

    typedef msvc_eti_base type;

    typedef msvc_eti_base first;

    typedef msvc_eti_base second;

    typedef msvc_eti_base tag;

    enum { value = 0 };

};



}}}



#endif // BOOST_MPL_AUX_MSVC_ETI_BASE_HPP_INCLUDED

