[857] | 1 |
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| 2 | #ifndef BOOST_MPL_MULTISET_AUX_COUNT_IMPL_HPP_INCLUDED
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| 3 | #define BOOST_MPL_MULTISET_AUX_COUNT_IMPL_HPP_INCLUDED
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| 4 |
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| 5 | // Copyright Aleksey Gurtovoy 2003-2004
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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 | // $Source: /cvsroot/boost/boost/boost/mpl/multiset/aux_/count_impl.hpp,v $
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| 14 | // $Date: 2004/09/02 15:41:02 $
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| 15 | // $Revision: 1.2 $
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| 16 |
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| 17 | #include <boost/mpl/multiset/aux_/tag.hpp>
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| 18 | #include <boost/mpl/count_fwd.hpp>
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| 19 | #include <boost/mpl/int.hpp>
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| 20 | #include <boost/mpl/aux_/type_wrapper.hpp>
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| 21 | #include <boost/mpl/aux_/static_cast.hpp>
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| 22 | #include <boost/mpl/aux_/config/static_constant.hpp>
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| 23 | #include <boost/mpl/aux_/config/workaround.hpp>
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| 24 | #include <boost/mpl/aux_/config/msvc.hpp>
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| 25 |
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| 26 | #if BOOST_WORKAROUND(BOOST_MSVC, <= 1300)
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| 27 | # include <boost/mpl/if.hpp>
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| 28 | # include <boost/type_traits/is_reference.hpp>
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| 29 | #endif
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| 30 |
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| 31 | namespace boost { namespace mpl {
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| 32 |
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| 33 | #if BOOST_WORKAROUND(BOOST_MSVC, <= 1300)
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| 34 |
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| 35 | namespace aux {
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| 36 | template< typename S, typename U >
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| 37 | struct multiset_count_impl
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| 38 | : int_< sizeof(S::key_count(BOOST_MPL_AUX_STATIC_CAST(U*,0))) - 1 >
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| 39 | {
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| 40 | };
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| 41 |
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| 42 | template< typename S, typename U >
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| 43 | struct multiset_count_ref_impl
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| 44 | {
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| 45 | typedef U (* u_)();
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| 46 | typedef int_< sizeof(S::ref_key_count(BOOST_MPL_AUX_STATIC_CAST(u_,0))) - 1 > type_;
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| 47 | BOOST_STATIC_CONSTANT(int, value = type_::value);
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| 48 | typedef type_ type;
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| 49 | };
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| 50 | }
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| 51 |
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| 52 | template<>
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| 53 | struct count_impl< aux::multiset_tag >
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| 54 | {
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| 55 | template< typename Set, typename Key > struct apply
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| 56 | : if_<
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| 57 | is_reference<Key>
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| 58 | , aux::multiset_count_ref_impl<Set,Key>
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| 59 | , aux::multiset_count_impl<Set,Key>
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| 60 | >::type
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| 61 | {
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| 62 | };
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| 63 | };
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| 64 |
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| 65 | #else
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| 66 |
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| 67 | template<>
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| 68 | struct count_impl< aux::multiset_tag >
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| 69 | {
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| 70 | template< typename Set, typename Key > struct apply
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| 71 | {
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| 72 | enum { msvc71_wknd_ = sizeof(Set::key_count(BOOST_MPL_AUX_STATIC_CAST(aux::type_wrapper<Key>*,0))) - 1 };
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| 73 | typedef int_< msvc71_wknd_ > type;
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| 74 | BOOST_STATIC_CONSTANT(int, value = msvc71_wknd_);
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| 75 | };
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| 76 | };
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| 77 |
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| 78 | #endif // BOOST_WORKAROUND(BOOST_MSVC, <= 1300)
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| 79 |
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| 80 | }}
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| 81 |
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| 82 | #endif // BOOST_MPL_MULTISET_AUX_COUNT_IMPL_HPP_INCLUDED
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