forked from boostorg/mpl
65 lines
1.4 KiB
C++
65 lines
1.4 KiB
C++
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#ifndef BOOST_MPL_IS_SEQUENCE_HPP_INCLUDED
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#define BOOST_MPL_IS_SEQUENCE_HPP_INCLUDED
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// Copyright Aleksey Gurtovoy 2002-2004
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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/not.hpp>
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#include <boost/mpl/and.hpp>
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#include <boost/mpl/begin_end.hpp>
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#include <boost/mpl/if.hpp>
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#include <boost/mpl/bool.hpp>
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#include <boost/mpl/sequence_tag_fwd.hpp>
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#include <boost/mpl/identity.hpp>
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#include <boost/mpl/void.hpp>
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#include <boost/mpl/aux_/has_tag.hpp>
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#include <boost/mpl/aux_/has_begin.hpp>
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#include <boost/mpl/aux_/na_spec.hpp>
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#include <boost/mpl/aux_/lambda_support.hpp>
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#include <boost/mpl/aux_/config/msvc.hpp>
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#include <boost/mpl/aux_/config/workaround.hpp>
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#include <boost/type_traits/is_same.hpp>
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namespace boost { namespace mpl {
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#if defined(BOOST_MPL_CFG_NO_HAS_XXX)
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template<
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typename BOOST_MPL_AUX_NA_PARAM(T)
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>
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struct is_sequence
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: bool_<false>
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{
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};
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#else
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template<
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typename BOOST_MPL_AUX_NA_PARAM(T)
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>
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struct is_sequence
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: not_< is_same< typename begin<T>::type, void_ > >
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{
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BOOST_MPL_AUX_LAMBDA_SUPPORT(1, is_sequence, (T))
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};
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#endif // BOOST_MPL_CFG_NO_HAS_XXX
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BOOST_MPL_AUX_NA_SPEC_NO_ETI(1, is_sequence)
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}}
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#endif // BOOST_MPL_IS_SEQUENCE_HPP_INCLUDED
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