1 | |
2 | #ifndef BOOST_MPL_MULTISET_AUX_ITEM_HPP_INCLUDED |
3 | #define BOOST_MPL_MULTISET_AUX_ITEM_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/int.hpp> |
19 | #include <boost/mpl/aux_/type_wrapper.hpp> |
20 | #include <boost/mpl/aux_/yes_no.hpp> |
21 | #include <boost/mpl/aux_/value_wknd.hpp> |
22 | #include <boost/mpl/aux_/static_cast.hpp> |
23 | #include <boost/mpl/aux_/config/arrays.hpp> |
24 | #include <boost/mpl/aux_/config/msvc.hpp> |
25 | #include <boost/mpl/aux_/config/workaround.hpp> |
26 | |
27 | #if BOOST_WORKAROUND(BOOST_MSVC, <= 1300) |
28 | # include <boost/mpl/eval_if.hpp> |
29 | # include <boost/mpl/next.hpp> |
30 | # include <boost/type_traits/is_same.hpp> |
31 | #endif |
32 | |
33 | |
34 | namespace boost { namespace mpl { |
35 | |
36 | #if BOOST_WORKAROUND(BOOST_MSVC, <= 1300) |
37 | |
38 | template< typename T, typename Base > |
39 | struct ms_item |
40 | { |
41 | typedef aux::multiset_tag tag; |
42 | |
43 | template< typename U > struct prior_count |
44 | { |
45 | enum { msvc70_wknd_ = sizeof(Base::key_count(BOOST_MPL_AUX_STATIC_CAST(U*,0))) }; |
46 | typedef int_< msvc70_wknd_ > count_; |
47 | typedef typename eval_if< is_same<T,U>, next<count_>, count_ >::type c_; |
48 | #if defined(BOOST_MPL_CFG_NO_DEPENDENT_ARRAY_TYPES) |
49 | typedef typename aux::weighted_tag<BOOST_MPL_AUX_MSVC_VALUE_WKND(c_)::value>::type type; |
50 | #else |
51 | typedef char (&type)[BOOST_MPL_AUX_MSVC_VALUE_WKND(c_)::value]; |
52 | #endif |
53 | }; |
54 | |
55 | template< typename U > struct prior_ref_count |
56 | { |
57 | typedef U (* u_)(); |
58 | enum { msvc70_wknd_ = sizeof(Base::ref_key_count(BOOST_MPL_AUX_STATIC_CAST(u_,0))) }; |
59 | typedef int_< msvc70_wknd_ > count_; |
60 | typedef typename eval_if< is_same<T,U>, next<count_>, count_ >::type c_; |
61 | #if defined(BOOST_MPL_CFG_NO_DEPENDENT_ARRAY_TYPES) |
62 | typedef typename aux::weighted_tag<BOOST_MPL_AUX_MSVC_VALUE_WKND(c_)::value>::type type; |
63 | #else |
64 | typedef char (&type)[BOOST_MPL_AUX_MSVC_VALUE_WKND(c_)::value]; |
65 | #endif |
66 | }; |
67 | |
68 | template< typename U > |
69 | static typename prior_count<U>::type key_count(U*); |
70 | |
71 | template< typename U > |
72 | static typename prior_ref_count<U>::type ref_key_count(U (*)()); |
73 | }; |
74 | |
75 | #else // BOOST_WORKAROUND(BOOST_MSVC, <= 1300) |
76 | |
77 | namespace aux { |
78 | template< typename U, typename Base > |
79 | struct prior_key_count |
80 | { |
81 | enum { msvc71_wknd_ = sizeof(Base::key_count(BOOST_MPL_AUX_STATIC_CAST(aux::type_wrapper<U>*,0))) }; |
82 | typedef int_< msvc71_wknd_ > count_; |
83 | #if defined(BOOST_MPL_CFG_NO_DEPENDENT_ARRAY_TYPES) |
84 | typedef typename aux::weighted_tag< BOOST_MPL_AUX_VALUE_WKND(count_)::value >::type type; |
85 | #else |
86 | typedef char (&type)[count_::value]; |
87 | #endif |
88 | }; |
89 | } |
90 | |
91 | template< typename T, typename Base > |
92 | struct ms_item |
93 | { |
94 | typedef aux::multiset_tag tag; |
95 | |
96 | enum { msvc71_wknd_ = sizeof(Base::key_count(BOOST_MPL_AUX_STATIC_CAST(aux::type_wrapper<T>*,0))) + 1 }; |
97 | typedef int_< msvc71_wknd_ > count_; |
98 | #if defined(BOOST_MPL_CFG_NO_DEPENDENT_ARRAY_TYPES) |
99 | static |
100 | typename aux::weighted_tag< BOOST_MPL_AUX_VALUE_WKND(count_)::value >::type |
101 | key_count(aux::type_wrapper<T>*); |
102 | #else |
103 | static char (& key_count(aux::type_wrapper<T>*) )[count_::value]; |
104 | #endif |
105 | |
106 | template< typename U > |
107 | static typename aux::prior_key_count<U,Base>::type key_count(aux::type_wrapper<U>*); |
108 | }; |
109 | |
110 | #endif // BOOST_WORKAROUND(BOOST_MSVC, <= 1300) |
111 | |
112 | }} |
113 | |
114 | #endif // BOOST_MPL_MULTISET_AUX_ITEM_HPP_INCLUDED |
115 | |