62 lines
1.6 KiB
Plaintext
62 lines
1.6 KiB
Plaintext
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#ifndef BOOST_MPL_AUX_CONTAINS_IMPL_HPP_INCLUDED
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#define BOOST_MPL_AUX_CONTAINS_IMPL_HPP_INCLUDED
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// Copyright Eric Friedman 2002
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// Copyright Aleksey Gurtovoy 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/contains_fwd.hpp>
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#include <boost/mpl/begin_end.hpp>
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#include <boost/mpl/find.hpp>
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#include <boost/mpl/not.hpp>
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#include <boost/mpl/aux_/traits_lambda_spec.hpp>
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#include <boost/mpl/aux_/config/forwarding.hpp>
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#include <boost/mpl/aux_/config/static_constant.hpp>
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#include <boost/type_traits/is_same.hpp>
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namespace boost { namespace mpl {
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template< typename Tag >
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struct contains_impl
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{
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template< typename Sequence, typename T > struct apply
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#if !defined(BOOST_MPL_CFG_NO_NESTED_FORWARDING)
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: not_< is_same<
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typename find<Sequence,T>::type
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, typename end<Sequence>::type
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> >
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{
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#else
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{
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typedef not_< is_same<
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typename find<Sequence,T>::type
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, typename end<Sequence>::type
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> > type;
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BOOST_STATIC_CONSTANT(bool, value =
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(not_< is_same<
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typename find<Sequence,T>::type
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, typename end<Sequence>::type
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> >::value)
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);
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#endif
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};
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};
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BOOST_MPL_ALGORITM_TRAITS_LAMBDA_SPEC(2,contains_impl)
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}}
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#endif // BOOST_MPL_AUX_CONTAINS_IMPL_HPP_INCLUDED
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