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2 | #ifndef BOOST_MPL_SET_AUX_HAS_KEY_IMPL_HPP_INCLUDED
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3 | #define BOOST_MPL_SET_AUX_HAS_KEY_IMPL_HPP_INCLUDED
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4 |
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5 | // Copyright Aleksey Gurtovoy 2003-2004
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6 | // Copyright David Abrahams 2003-2004
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7 | //
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8 | // Distributed under the Boost Software License, Version 1.0.
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9 | // (See accompanying file LICENSE_1_0.txt or copy at
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10 | // http://www.boost.org/LICENSE_1_0.txt)
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11 | //
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12 | // See http://www.boost.org/libs/mpl for documentation.
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13 |
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14 | // $Source: /cvsroot/boost/boost/boost/mpl/set/aux_/has_key_impl.hpp,v $
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15 | // $Date: 2004/10/13 18:23:37 $
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16 | // $Revision: 1.7 $
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17 |
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18 | #include <boost/mpl/set/aux_/tag.hpp>
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19 | #include <boost/mpl/has_key_fwd.hpp>
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20 | #include <boost/mpl/bool.hpp>
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21 | #include <boost/mpl/aux_/overload_names.hpp>
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22 | #include <boost/mpl/aux_/static_cast.hpp>
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23 | #include <boost/mpl/aux_/yes_no.hpp>
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24 | #include <boost/mpl/aux_/type_wrapper.hpp>
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25 | #include <boost/mpl/aux_/config/workaround.hpp>
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26 | #include <boost/mpl/aux_/config/static_constant.hpp>
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27 |
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28 | namespace boost { namespace mpl {
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29 |
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30 | template<>
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31 | struct has_key_impl< aux::set_tag >
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32 | {
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33 | template< typename Set, typename T > struct apply
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34 | #if BOOST_WORKAROUND(BOOST_MSVC, BOOST_TESTED_AT(1400)) \
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35 | || BOOST_WORKAROUND(__EDG_VERSION__, <= 245)
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36 | {
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37 | BOOST_STATIC_CONSTANT(bool, value =
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38 | ( sizeof( BOOST_MPL_AUX_OVERLOAD_CALL_IS_MASKED(
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39 | Set
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40 | , BOOST_MPL_AUX_STATIC_CAST(aux::type_wrapper<T>*, 0)
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41 | ) ) == sizeof(aux::no_tag) )
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42 | );
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43 |
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44 | typedef bool_<value> type;
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45 |
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46 | #else // ISO98 C++
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47 | : bool_<
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48 | ( sizeof( BOOST_MPL_AUX_OVERLOAD_CALL_IS_MASKED(
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49 | Set
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50 | , BOOST_MPL_AUX_STATIC_CAST(aux::type_wrapper<T>*, 0)
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51 | ) ) == sizeof(aux::no_tag) )
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52 | >
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53 | {
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54 | #endif
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55 | };
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56 | };
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57 |
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58 | }}
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59 |
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60 | #endif // BOOST_MPL_SET_AUX_HAS_KEY_IMPL_HPP_INCLUDED
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