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1 |
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2 #ifndef BOOST_MPL_AS_SEQUENCE_HPP_INCLUDED |
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3 #define BOOST_MPL_AS_SEQUENCE_HPP_INCLUDED |
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4 |
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5 // Copyright Aleksey Gurtovoy 2002-2004 |
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6 // |
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7 // Distributed under the Boost Software License, Version 1.0. |
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8 // (See accompanying file LICENSE_1_0.txt or copy at |
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9 // http://www.boost.org/LICENSE_1_0.txt) |
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10 // |
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11 // See http://www.boost.org/libs/mpl for documentation. |
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12 |
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13 // $Id: as_sequence.hpp 49267 2008-10-11 06:19:02Z agurtovoy $ |
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14 // $Date: 2008-10-11 02:19:02 -0400 (Sat, 11 Oct 2008) $ |
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15 // $Revision: 49267 $ |
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16 |
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17 #include <boost/mpl/is_sequence.hpp> |
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18 #include <boost/mpl/single_view.hpp> |
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19 #include <boost/mpl/if.hpp> |
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20 #include <boost/mpl/aux_/na_spec.hpp> |
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21 #include <boost/mpl/aux_/lambda_support.hpp> |
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22 |
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23 namespace boost { namespace mpl { |
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24 |
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25 template< |
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26 typename BOOST_MPL_AUX_NA_PARAM(T) |
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27 > |
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28 struct as_sequence |
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29 : if_< is_sequence<T>, T, single_view<T> > |
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30 { |
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31 BOOST_MPL_AUX_LAMBDA_SUPPORT(1,as_sequence,(T)) |
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32 }; |
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33 |
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34 BOOST_MPL_AUX_NA_SPEC_NO_ETI(1, as_sequence) |
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35 |
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36 }} |
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37 |
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38 #endif // BOOST_MPL_AS_SEQUENCE_HPP_INCLUDED |