Chris@16: 
Chris@16: #ifndef BOOST_MPL_MULTISET_AUX_ITEM_HPP_INCLUDED
Chris@16: #define BOOST_MPL_MULTISET_AUX_ITEM_HPP_INCLUDED
Chris@16: 
Chris@16: // Copyright Aleksey Gurtovoy 2003-2004
Chris@16: //
Chris@16: // Distributed under the Boost Software License, Version 1.0. 
Chris@16: // (See accompanying file LICENSE_1_0.txt or copy at 
Chris@16: // http://www.boost.org/LICENSE_1_0.txt)
Chris@16: //
Chris@16: // See http://www.boost.org/libs/mpl for documentation.
Chris@16: 
Chris@101: // $Id$
Chris@101: // $Date$
Chris@101: // $Revision$
Chris@16: 
Chris@16: #include <boost/mpl/multiset/aux_/tag.hpp>
Chris@16: #include <boost/mpl/int.hpp>
Chris@16: #include <boost/mpl/aux_/type_wrapper.hpp>
Chris@16: #include <boost/mpl/aux_/yes_no.hpp>
Chris@16: #include <boost/mpl/aux_/value_wknd.hpp>
Chris@16: #include <boost/mpl/aux_/static_cast.hpp>
Chris@16: #include <boost/mpl/aux_/config/arrays.hpp>
Chris@16: #include <boost/mpl/aux_/config/msvc.hpp>
Chris@16: #include <boost/mpl/aux_/config/workaround.hpp>
Chris@16: 
Chris@16: #if BOOST_WORKAROUND(BOOST_MSVC, <= 1300)
Chris@16: #   include <boost/mpl/eval_if.hpp>
Chris@16: #   include <boost/mpl/next.hpp>
Chris@16: #   include <boost/type_traits/is_same.hpp>
Chris@16: #endif
Chris@16: 
Chris@16: 
Chris@16: namespace boost { namespace mpl {
Chris@16: 
Chris@16: #if BOOST_WORKAROUND(BOOST_MSVC, <= 1300)
Chris@16: 
Chris@16: template< typename T, typename Base >
Chris@16: struct ms_item
Chris@16: {
Chris@16:     typedef aux::multiset_tag tag;
Chris@16: 
Chris@16:     template< typename U > struct prior_count
Chris@16:     {
Chris@16:         enum { msvc70_wknd_ = sizeof(Base::key_count(BOOST_MPL_AUX_STATIC_CAST(U*,0))) };
Chris@16:         typedef int_< msvc70_wknd_ > count_;
Chris@16:         typedef typename eval_if< is_same<T,U>, next<count_>, count_ >::type c_;
Chris@16: #if defined(BOOST_MPL_CFG_NO_DEPENDENT_ARRAY_TYPES)
Chris@16:         typedef typename aux::weighted_tag<BOOST_MPL_AUX_MSVC_VALUE_WKND(c_)::value>::type type;
Chris@16: #else
Chris@16:         typedef char (&type)[BOOST_MPL_AUX_MSVC_VALUE_WKND(c_)::value];
Chris@16: #endif
Chris@16:     };
Chris@16: 
Chris@16:     template< typename U > struct prior_ref_count
Chris@16:     {
Chris@16:         typedef U (* u_)();
Chris@16:         enum { msvc70_wknd_ = sizeof(Base::ref_key_count(BOOST_MPL_AUX_STATIC_CAST(u_,0))) }; 
Chris@16:         typedef int_< msvc70_wknd_ > count_;
Chris@16:         typedef typename eval_if< is_same<T,U>, next<count_>, count_ >::type c_;
Chris@16: #if defined(BOOST_MPL_CFG_NO_DEPENDENT_ARRAY_TYPES)
Chris@16:         typedef typename aux::weighted_tag<BOOST_MPL_AUX_MSVC_VALUE_WKND(c_)::value>::type type;
Chris@16: #else
Chris@16:         typedef char (&type)[BOOST_MPL_AUX_MSVC_VALUE_WKND(c_)::value];
Chris@16: #endif
Chris@16:     };
Chris@16: 
Chris@16:     template< typename U >
Chris@16:     static typename prior_count<U>::type key_count(U*);
Chris@16: 
Chris@16:     template< typename U >
Chris@16:     static typename prior_ref_count<U>::type ref_key_count(U (*)());
Chris@16: };
Chris@16: 
Chris@16: #else // BOOST_WORKAROUND(BOOST_MSVC, <= 1300)
Chris@16: 
Chris@16: namespace aux {
Chris@16: template< typename U, typename Base >
Chris@16: struct prior_key_count
Chris@16: {
Chris@16:     enum { msvc71_wknd_ = sizeof(Base::key_count(BOOST_MPL_AUX_STATIC_CAST(aux::type_wrapper<U>*,0))) }; 
Chris@16:     typedef int_< msvc71_wknd_ > count_;
Chris@16: #if defined(BOOST_MPL_CFG_NO_DEPENDENT_ARRAY_TYPES)
Chris@16:     typedef typename aux::weighted_tag< BOOST_MPL_AUX_VALUE_WKND(count_)::value >::type type;
Chris@16: #else
Chris@16:     typedef char (&type)[count_::value];
Chris@16: #endif
Chris@16: };
Chris@16: }
Chris@16: 
Chris@16: template< typename T, typename Base >
Chris@16: struct ms_item
Chris@16: {
Chris@16:     typedef aux::multiset_tag tag;
Chris@16: 
Chris@16:     enum { msvc71_wknd_ = sizeof(Base::key_count(BOOST_MPL_AUX_STATIC_CAST(aux::type_wrapper<T>*,0))) + 1 };
Chris@16:     typedef int_< msvc71_wknd_ > count_;
Chris@16: #if defined(BOOST_MPL_CFG_NO_DEPENDENT_ARRAY_TYPES)
Chris@16:     static 
Chris@16:     typename aux::weighted_tag< BOOST_MPL_AUX_VALUE_WKND(count_)::value >::type
Chris@16:         key_count(aux::type_wrapper<T>*);
Chris@16: #else
Chris@16:     static char (& key_count(aux::type_wrapper<T>*) )[count_::value];
Chris@16: #endif
Chris@16: 
Chris@16:     template< typename U >
Chris@16:     static typename aux::prior_key_count<U,Base>::type key_count(aux::type_wrapper<U>*);
Chris@16: };
Chris@16: 
Chris@16: #endif // BOOST_WORKAROUND(BOOST_MSVC, <= 1300)
Chris@16: 
Chris@16: }}
Chris@16: 
Chris@16: #endif // BOOST_MPL_MULTISET_AUX_ITEM_HPP_INCLUDED