boost/mpl/aux_/contains_impl.hpp
#ifndef BOOST_MPL_AUX_CONTAINS_IMPL_HPP_INCLUDED
#define BOOST_MPL_AUX_CONTAINS_IMPL_HPP_INCLUDED
// Copyright Eric Friedman 2002
// Copyright Aleksey Gurtovoy 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: 2004-09-02 11:41:37 -0400 (Thu, 02 Sep 2004) $
// $Revision: 24874 $
#include <boost/mpl/contains_fwd.hpp>
#include <boost/mpl/begin_end.hpp>
#include <boost/mpl/find.hpp>
#include <boost/mpl/not.hpp>
#include <boost/mpl/aux_/traits_lambda_spec.hpp>
#include <boost/mpl/aux_/config/forwarding.hpp>
#include <boost/mpl/aux_/config/static_constant.hpp>
#include <boost/type_traits/is_same.hpp>
namespace boost { namespace mpl {
template< typename Tag >
struct contains_impl
{
template< typename Sequence, typename T > struct apply
#if !defined(BOOST_MPL_CFG_NO_NESTED_FORWARDING)
: not_< is_same<
typename find<Sequence,T>::type
, typename end<Sequence>::type
> >
{
#else
{
typedef not_< is_same<
typename find<Sequence,T>::type
, typename end<Sequence>::type
> > type;
BOOST_STATIC_CONSTANT(bool, value =
(not_< is_same<
typename find<Sequence,T>::type
, typename end<Sequence>::type
> >::value)
);
#endif
};
};
BOOST_MPL_ALGORITM_TRAITS_LAMBDA_SPEC(2,contains_impl)
}}
#endif // BOOST_MPL_AUX_CONTAINS_IMPL_HPP_INCLUDED