Last change
on this file since 44 was
44,
checked in by cholod, 12 years ago
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Load NEMO_TMP into vendor/nemo/current.
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File size:
1.1 KB
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1 | |
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2 | #ifndef BOOST_MPL_TAG_HPP_INCLUDED |
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3 | #define BOOST_MPL_TAG_HPP_INCLUDED |
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4 | |
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5 | // Copyright Aleksey Gurtovoy 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: tag.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/eval_if.hpp> |
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18 | #include <boost/mpl/void.hpp> |
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19 | #include <boost/mpl/aux_/has_tag.hpp> |
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20 | #include <boost/mpl/aux_/config/eti.hpp> |
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21 | |
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22 | namespace boost { namespace mpl { |
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23 | |
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24 | namespace aux { |
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25 | template< typename T > struct tag_impl |
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26 | { |
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27 | typedef typename T::tag type; |
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28 | }; |
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29 | } |
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30 | |
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31 | template< typename T, typename Default = void_ > struct tag |
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32 | #if !defined(BOOST_MPL_CFG_MSVC_ETI_BUG) |
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33 | : if_< |
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34 | aux::has_tag<T> |
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35 | , aux::tag_impl<T> |
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36 | , Default |
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37 | >::type |
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38 | { |
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39 | #else |
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40 | { |
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41 | typedef typename eval_if< |
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42 | aux::has_tag<T> |
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43 | , aux::tag_impl<T> |
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44 | , Default |
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45 | >::type type; |
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46 | |
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47 | #endif |
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48 | }; |
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49 | |
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50 | }} |
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51 | |
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52 | #endif // BOOST_MPL_TAG_HPP_INCLUDED |
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