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1 \r
2 #ifndef BOOST_MPL_MULTISET_AUX_COUNT_IMPL_HPP_INCLUDED\r
3 #define BOOST_MPL_MULTISET_AUX_COUNT_IMPL_HPP_INCLUDED\r
4 \r
5 // Copyright Aleksey Gurtovoy 2003-2004\r
6 //\r
7 // Distributed under the Boost Software License, Version 1.0. \r
8 // (See accompanying file LICENSE_1_0.txt or copy at \r
9 // http://www.boost.org/LICENSE_1_0.txt)\r
10 //\r
11 // See http://www.boost.org/libs/mpl for documentation.\r
12 \r
13 // $Id: count_impl.hpp 49267 2008-10-11 06:19:02Z agurtovoy $\r
14 // $Date: 2008-10-11 02:19:02 -0400 (Sat, 11 Oct 2008) $\r
15 // $Revision: 49267 $\r
16 \r
17 #include <boost/mpl/multiset/aux_/tag.hpp>\r
18 #include <boost/mpl/count_fwd.hpp>\r
19 #include <boost/mpl/int.hpp>\r
20 #include <boost/mpl/aux_/type_wrapper.hpp>\r
21 #include <boost/mpl/aux_/static_cast.hpp>\r
22 #include <boost/mpl/aux_/config/static_constant.hpp>\r
23 #include <boost/mpl/aux_/config/workaround.hpp>\r
24 #include <boost/mpl/aux_/config/msvc.hpp>\r
25 \r
26 #if BOOST_WORKAROUND(BOOST_MSVC, <= 1300)\r
27 #   include <boost/mpl/if.hpp>\r
28 #   include <boost/type_traits/is_reference.hpp>\r
29 #endif\r
30 \r
31 namespace boost { namespace mpl {\r
32 \r
33 #if BOOST_WORKAROUND(BOOST_MSVC, <= 1300)\r
34 \r
35 namespace aux {\r
36 template< typename S, typename U >\r
37 struct multiset_count_impl\r
38     : int_< sizeof(S::key_count(BOOST_MPL_AUX_STATIC_CAST(U*,0))) - 1 >\r
39 {\r
40 };\r
41 \r
42 template< typename S, typename U >\r
43 struct multiset_count_ref_impl\r
44 {\r
45     typedef U (* u_)();\r
46     typedef int_< sizeof(S::ref_key_count(BOOST_MPL_AUX_STATIC_CAST(u_,0))) - 1 > type_;\r
47     BOOST_STATIC_CONSTANT(int, value = type_::value);\r
48     typedef type_ type;\r
49 };\r
50 }\r
51 \r
52 template<>\r
53 struct count_impl< aux::multiset_tag >\r
54 {\r
55     template< typename Set, typename Key > struct apply\r
56         : if_< \r
57               is_reference<Key>\r
58             , aux::multiset_count_ref_impl<Set,Key>\r
59             , aux::multiset_count_impl<Set,Key>\r
60             >::type\r
61     {\r
62     };\r
63 };\r
64 \r
65 #else\r
66 \r
67 template<>\r
68 struct count_impl< aux::multiset_tag >\r
69 {\r
70     template< typename Set, typename Key > struct apply\r
71     {\r
72         enum { msvc71_wknd_ = sizeof(Set::key_count(BOOST_MPL_AUX_STATIC_CAST(aux::type_wrapper<Key>*,0))) - 1 };\r
73         typedef int_< msvc71_wknd_ > type;\r
74         BOOST_STATIC_CONSTANT(int, value = msvc71_wknd_);\r
75     };\r
76 };\r
77 \r
78 #endif // BOOST_WORKAROUND(BOOST_MSVC, <= 1300)\r
79 \r
80 }}\r
81 \r
82 #endif // BOOST_MPL_MULTISET_AUX_COUNT_IMPL_HPP_INCLUDED\r