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#ifndef BOOST_MPL_MULTISET_AUX_COUNT_IMPL_HPP_INCLUDED
#define BOOST_MPL_MULTISET_AUX_COUNT_IMPL_HPP_INCLUDED
// Copyright Aleksey Gurtovoy 2003-2004
//
// Distributed under the Boost Software License, Version 1.0.
// (See accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
//
// See http://www.boost.org/libs/mpl for documentation.
// $Source: /cvsroot/boost/boost/boost/mpl/multiset/aux_/count_impl.hpp,v $
// $Date: 2004/09/02 15:41:02 $
// $Revision: 1.2 $
#include <boost/mpl/multiset/aux_/tag.hpp>
#include <boost/mpl/count_fwd.hpp>
#include <boost/mpl/int.hpp>
#include <boost/mpl/aux_/type_wrapper.hpp>
#include <boost/mpl/aux_/static_cast.hpp>
#include <boost/mpl/aux_/config/static_constant.hpp>
#include <boost/mpl/aux_/config/workaround.hpp>
#include <boost/mpl/aux_/config/msvc.hpp>
#if BOOST_WORKAROUND(BOOST_MSVC, <= 1300)
# include <boost/mpl/if.hpp>
# include <boost/type_traits/is_reference.hpp>
#endif
namespace boost { namespace mpl {
#if BOOST_WORKAROUND(BOOST_MSVC, <= 1300)
namespace aux {
template< typename S, typename U >
struct multiset_count_impl
: int_< sizeof(S::key_count(BOOST_MPL_AUX_STATIC_CAST(U*,0))) - 1 >
{
};
template< typename S, typename U >
struct multiset_count_ref_impl
{
typedef U (* u_)();
typedef int_< sizeof(S::ref_key_count(BOOST_MPL_AUX_STATIC_CAST(u_,0))) - 1 > type_;
BOOST_STATIC_CONSTANT(int, value = type_::value);
typedef type_ type;
};
}
template<>
struct count_impl< aux::multiset_tag >
{
template< typename Set, typename Key > struct apply
: if_<
is_reference<Key>
, aux::multiset_count_ref_impl<Set,Key>
, aux::multiset_count_impl<Set,Key>
>::type
{
};
};
#else
template<>
struct count_impl< aux::multiset_tag >
{
template< typename Set, typename Key > struct apply
{
enum { msvc71_wknd_ = sizeof(Set::key_count(BOOST_MPL_AUX_STATIC_CAST(aux::type_wrapper<Key>*,0))) - 1 };
typedef int_< msvc71_wknd_ > type;
BOOST_STATIC_CONSTANT(int, value = msvc71_wknd_);
};
};
#endif // BOOST_WORKAROUND(BOOST_MSVC, <= 1300)
}}
#endif // BOOST_MPL_MULTISET_AUX_COUNT_IMPL_HPP_INCLUDED