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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 |