same_as.hpp

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#ifndef BOOST_MPL_SAME_AS_HPP_INCLUDED
#define BOOST_MPL_SAME_AS_HPP_INCLUDED
 
// Copyright Aleksey Gurtovoy 2000-2004
//
// 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.
 
// $Id: same_as.hpp 13472 2017-08-22 07:53:44Z richean $
// $Date: 2017-08-22 09:53:44 +0200 (Di, 22 Aug 2017) $
// $Revision: 13472 $
 
#include <boost/mpl/not.hpp>
#include <boost/mpl/aux_/lambda_spec.hpp>
#include <boost/mpl/aux_/config/forwarding.hpp>
 
#include <boost/type_traits/is_same.hpp>
 
namespace boost { namespace mpl {
 
template< typename T1 >
struct same_as
{
    template< typename T2 > struct apply
#if !defined(BOOST_MPL_CFG_NO_NESTED_FORWARDING)
        : is_same<T1,T2>
    {
#else
    {
        typedef typename is_same<T1,T2>::type type;
#endif
    };
};
 
template< typename T1 >
struct not_same_as
{
    template< typename T2 > struct apply
#if !defined(BOOST_MPL_CFG_NO_NESTED_FORWARDING)
        : not_< is_same<T1,T2> >
    {
#else
    {
        typedef typename not_< is_same<T1,T2> >::type type;
#endif
    };
};
 
}}
 
#endif // BOOST_MPL_SAME_AS_HPP_INCLUDED