1 | |
2 | #ifndef BOOST_MPL_MULTISET_AUX_COUNT_IMPL_HPP_INCLUDED |
3 | #define BOOST_MPL_MULTISET_AUX_COUNT_IMPL_HPP_INCLUDED |
4 | |
5 | // Copyright Aleksey Gurtovoy 2003-2004 |
6 | // |
7 | // Distributed under the Boost Software License, Version 1.0. |
8 | // (See accompanying file LICENSE_1_0.txt or copy at |
9 | // http://www.boost.org/LICENSE_1_0.txt) |
10 | // |
11 | // See http://www.boost.org/libs/mpl for documentation. |
12 | |
13 | // $Id$ |
14 | // $Date$ |
15 | // $Revision$ |
16 | |
17 | #include <boost/mpl/multiset/aux_/tag.hpp> |
18 | #include <boost/mpl/count_fwd.hpp> |
19 | #include <boost/mpl/int.hpp> |
20 | #include <boost/mpl/aux_/type_wrapper.hpp> |
21 | #include <boost/mpl/aux_/static_cast.hpp> |
22 | #include <boost/mpl/aux_/config/static_constant.hpp> |
23 | #include <boost/mpl/aux_/config/workaround.hpp> |
24 | #include <boost/mpl/aux_/config/msvc.hpp> |
25 | |
26 | #if BOOST_WORKAROUND(BOOST_MSVC, <= 1300) |
27 | # include <boost/mpl/if.hpp> |
28 | # include <boost/type_traits/is_reference.hpp> |
29 | #endif |
30 | |
31 | namespace boost { namespace mpl { |
32 | |
33 | #if BOOST_WORKAROUND(BOOST_MSVC, <= 1300) |
34 | |
35 | namespace aux { |
36 | template< typename S, typename U > |
37 | struct multiset_count_impl |
38 | : int_< sizeof(S::key_count(BOOST_MPL_AUX_STATIC_CAST(U*,0))) - 1 > |
39 | { |
40 | }; |
41 | |
42 | template< typename S, typename U > |
43 | struct multiset_count_ref_impl |
44 | { |
45 | typedef U (* u_)(); |
46 | typedef int_< sizeof(S::ref_key_count(BOOST_MPL_AUX_STATIC_CAST(u_,0))) - 1 > type_; |
47 | BOOST_STATIC_CONSTANT(int, value = type_::value); |
48 | typedef type_ type; |
49 | }; |
50 | } |
51 | |
52 | template<> |
53 | struct count_impl< aux::multiset_tag > |
54 | { |
55 | template< typename Set, typename Key > struct apply |
56 | : if_< |
57 | is_reference<Key> |
58 | , aux::multiset_count_ref_impl<Set,Key> |
59 | , aux::multiset_count_impl<Set,Key> |
60 | >::type |
61 | { |
62 | }; |
63 | }; |
64 | |
65 | #else |
66 | |
67 | template<> |
68 | struct count_impl< aux::multiset_tag > |
69 | { |
70 | template< typename Set, typename Key > struct apply |
71 | { |
72 | enum { msvc71_wknd_ = sizeof(Set::key_count(BOOST_MPL_AUX_STATIC_CAST(aux::type_wrapper<Key>*,0))) - 1 }; |
73 | typedef int_< msvc71_wknd_ > type; |
74 | BOOST_STATIC_CONSTANT(int, value = msvc71_wknd_); |
75 | }; |
76 | }; |
77 | |
78 | #endif // BOOST_WORKAROUND(BOOST_MSVC, <= 1300) |
79 | |
80 | }} |
81 | |
82 | #endif // BOOST_MPL_MULTISET_AUX_COUNT_IMPL_HPP_INCLUDED |
83 | |