liuxiaolong
2021-07-20 58d904a328c0d849769b483e901a0be9426b8209
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#ifndef BOOST_MPL_AUX_COUNT_IMPL_HPP_INCLUDED
#define BOOST_MPL_AUX_COUNT_IMPL_HPP_INCLUDED
 
// Copyright Aleksey Gurtovoy 2000-2004
//
// 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.
 
// $Id$
// $Date$
// $Revision$
 
#include <boost/mpl/count_fwd.hpp>
#include <boost/mpl/count_if.hpp>
#include <boost/mpl/same_as.hpp>
#include <boost/mpl/aux_/config/static_constant.hpp>
#include <boost/mpl/aux_/config/workaround.hpp>
#include <boost/mpl/aux_/traits_lambda_spec.hpp>
 
namespace boost { namespace mpl {
 
template< typename Tag > struct count_impl
{
    template< typename Sequence, typename T > struct apply
#if BOOST_WORKAROUND(BOOST_BORLANDC,BOOST_TESTED_AT(0x561))
    {
        typedef typename count_if< Sequence,same_as<T> >::type type;
        BOOST_STATIC_CONSTANT(int, value = BOOST_MPL_AUX_VALUE_WKND(type)::value);
#else
        : count_if< Sequence,same_as<T> >
    {
#endif
    };
};
 
BOOST_MPL_ALGORITM_TRAITS_LAMBDA_SPEC(2,count_impl)
 
}}
 
#endif // BOOST_MPL_AUX_COUNT_IMPL_HPP_INCLUDED