boost/mpl/aux_/deref_wknd.hpp
//-----------------------------------------------------------------------------
// boost mpl/aux_/deref_wknd.hpp header file
// See http://www.boost.org for updates, documentation, and revision history.
//-----------------------------------------------------------------------------
//
// Copyright (c) 2001-03
// Aleksey Gurtovoy
//
// Permission to use, copy, modify, distribute and sell this software
// and its documentation for any purpose is hereby granted without fee,
// provided that the above copyright notice appears in all copies and
// that both the copyright notice and this permission notice appear in
// supporting documentation. No representations are made about the
// suitability of this software for any purpose. It is provided "as is"
// without express or implied warranty.
#ifndef BOOST_MPL_AUX_DEREF_WNKD_HPP_INCLUDED
#define BOOST_MPL_AUX_DEREF_WNKD_HPP_INCLUDED
#include "boost/mpl/aux_/is_msvc_eti_arg.hpp"
#include "boost/mpl/aux_/config/eti.hpp"
#if defined(BOOST_MPL_MSVC_ETI_BUG)
namespace boost { namespace mpl { namespace aux {
# if defined(BOOST_MPL_MSVC_60_ETI_BUG)
template< typename Iterator > struct deref_wknd
{
typedef typename Iterator::type type;
};
template<> struct deref_wknd<int>
{
typedef int type;
};
# else
template< bool > struct deref_wknd_impl
{
template< typename Iterator > struct result_
{
typedef typename Iterator::type type;
};
};
template<> struct deref_wknd_impl<false>
{
template< typename Iterator > struct result_
{
typedef int type;
};
};
template< typename Iterator > struct deref_wknd
: deref_wknd_impl< !aux::is_msvc_eti_arg<Iterator>::value >
::template result_<Iterator>
{
};
# endif // BOOST_MPL_MSVC_60_ETI_BUG
}}} // namespace boost::mpl::aux
# define BOOST_MPL_AUX_DEREF_WNKD(iter) ::boost::mpl::aux::deref_wknd<iter>::type
#else
# define BOOST_MPL_AUX_DEREF_WNKD(iter) iter::type
#endif // BOOST_MPL_MSVC_ETI_BUG
#endif // BOOST_MPL_AUX_DEREF_WNKD_HPP_INCLUDED