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1 | |
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2 | #ifndef BOOST_MPL_SAME_AS_HPP_INCLUDED |
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3 | #define BOOST_MPL_SAME_AS_HPP_INCLUDED |
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4 | |
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5 | // Copyright Aleksey Gurtovoy 2000-2004 |
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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: same_as.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/not.hpp> |
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18 | #include <boost/mpl/aux_/lambda_spec.hpp> |
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19 | #include <boost/mpl/aux_/config/forwarding.hpp> |
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20 | |
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21 | #include <boost/type_traits/is_same.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< typename T1 > |
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26 | struct same_as |
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27 | { |
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28 | template< typename T2 > struct apply |
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29 | #if !defined(BOOST_MPL_CFG_NO_NESTED_FORWARDING) |
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30 | : is_same<T1,T2> |
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31 | { |
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32 | #else |
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33 | { |
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34 | typedef typename is_same<T1,T2>::type type; |
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35 | #endif |
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36 | }; |
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37 | }; |
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38 | |
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39 | template< typename T1 > |
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40 | struct not_same_as |
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41 | { |
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42 | template< typename T2 > struct apply |
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43 | #if !defined(BOOST_MPL_CFG_NO_NESTED_FORWARDING) |
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44 | : not_< is_same<T1,T2> > |
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45 | { |
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46 | #else |
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47 | { |
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48 | typedef typename not_< is_same<T1,T2> >::type type; |
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49 | #endif |
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50 | }; |
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51 | }; |
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52 | |
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53 | }} |
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54 | |
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55 | #endif // BOOST_MPL_SAME_AS_HPP_INCLUDED |
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