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#ifndef BOOST_MPL_MAP_AUX_HAS_KEY_IMPL_HPP_INCLUDED
#define BOOST_MPL_MAP_AUX_HAS_KEY_IMPL_HPP_INCLUDED
// Copyright Aleksey Gurtovoy 2003-2004
// Copyright David Abrahams 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/mpl for documentation.
// $Id$
// $Date$
// $Revision$
#include <boost/mpl/has_key_fwd.hpp>
#include <boost/mpl/map/aux_/tag.hpp>
#include <boost/mpl/map/aux_/at_impl.hpp>
#include <boost/mpl/void.hpp>
#include <boost/mpl/aux_/config/typeof.hpp>
namespace boost { namespace mpl {
template<>
struct has_key_impl< aux::map_tag >
{
template< typename Map, typename Key > struct apply
#if defined(BOOST_MPL_CFG_TYPEOF_BASED_SEQUENCES)
: is_not_void_<
typename at_impl<aux::map_tag>
::apply<Map,Key>::type
>
#else
: bool_< ( x_order_impl<Map,Key>::value > 1 ) >
#endif
{
};
};
}}
#endif // BOOST_MPL_MAP_AUX_HAS_KEY_IMPL_HPP_INCLUDED
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