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/Src/Dependencies/Boost/boost/mpl/multiset/aux_/item.hpp

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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: item.hpp 49267 2008-10-11 06:19:02Z agurtovoy $
 14// $Date: 2008-10-11 17:19:02 +1100 (Sat, 11 Oct 2008) $
 15// $Revision: 49267 $
 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
 34namespace boost { namespace mpl {
 35
 36#if BOOST_WORKAROUND(BOOST_MSVC, <= 1300)
 37
 38template< typename T, typename Base >
 39struct 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
 77namespace aux {
 78template< typename U, typename Base >
 79struct 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
 91template< typename T, typename Base >
 92struct 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