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45 lines
1.1 KiB
45 lines
1.1 KiB
3 years ago
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#ifndef BOOST_MPL_MAP_AUX_HAS_KEY_IMPL_HPP_INCLUDED
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#define BOOST_MPL_MAP_AUX_HAS_KEY_IMPL_HPP_INCLUDED
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// Copyright Aleksey Gurtovoy 2003-2004
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// Copyright David Abrahams 2003-2004
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//
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// Distributed under the Boost Software License, Version 1.0.
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// (See accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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//
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// See http://www.boost.org/libs/mpl for documentation.
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// $Id$
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// $Date$
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// $Revision$
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#include <boost/mpl/has_key_fwd.hpp>
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#include <boost/mpl/map/aux_/tag.hpp>
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#include <boost/mpl/map/aux_/at_impl.hpp>
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#include <boost/mpl/void.hpp>
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#include <boost/mpl/aux_/config/typeof.hpp>
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namespace boost { namespace mpl {
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template<>
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struct has_key_impl< aux::map_tag >
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{
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template< typename Map, typename Key > struct apply
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#if defined(BOOST_MPL_CFG_TYPEOF_BASED_SEQUENCES)
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: is_not_void_<
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typename at_impl<aux::map_tag>
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::apply<Map,Key>::type
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>
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#else
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: bool_< ( x_order_impl<Map,Key>::value > 1 ) >
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#endif
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{
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};
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};
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}}
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#endif // BOOST_MPL_MAP_AUX_HAS_KEY_IMPL_HPP_INCLUDED
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