#ifndef BOOST_MPL_AUX_ORDER_IMPL_HPP_INCLUDED | |
#define BOOST_MPL_AUX_ORDER_IMPL_HPP_INCLUDED | |
// Copyright Aleksey Gurtovoy 2003-2004 | |
// Copyright David Abrahams 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. | |
// $Id: order_impl.hpp 49267 2008-10-11 06:19:02Z agurtovoy $ | |
// $Date: 2008-10-11 02:19:02 -0400 (Sat, 11 Oct 2008) $ | |
// $Revision: 49267 $ | |
#include <boost/mpl/order_fwd.hpp> | |
#include <boost/mpl/if.hpp> | |
#include <boost/mpl/long.hpp> | |
#include <boost/mpl/has_key.hpp> | |
#include <boost/mpl/aux_/overload_names.hpp> | |
#include <boost/mpl/aux_/static_cast.hpp> | |
#include <boost/mpl/aux_/type_wrapper.hpp> | |
#include <boost/mpl/aux_/traits_lambda_spec.hpp> | |
#include <boost/mpl/aux_/config/msvc.hpp> | |
#include <boost/mpl/aux_/config/static_constant.hpp> | |
#include <boost/mpl/aux_/config/workaround.hpp> | |
namespace boost { namespace mpl { | |
// default implementation; requires 'Seq' to provide corresponding overloads | |
// of BOOST_MPL_AUX_OVERLOAD_ORDER_BY_KEY | |
template< typename Seq, typename Key > struct x_order_impl | |
#if BOOST_WORKAROUND(BOOST_MSVC, BOOST_TESTED_AT(1400)) \ | |
|| BOOST_WORKAROUND(__EDG_VERSION__, <= 245) | |
{ | |
BOOST_STATIC_CONSTANT(long, value = | |
sizeof( BOOST_MPL_AUX_OVERLOAD_CALL_ORDER_BY_KEY( | |
Seq | |
, BOOST_MPL_AUX_STATIC_CAST(aux::type_wrapper<Key>*, 0) | |
) ) | |
); | |
typedef long_<value> type; | |
#else // ISO98 C++ | |
: long_< | |
sizeof( BOOST_MPL_AUX_OVERLOAD_CALL_ORDER_BY_KEY( | |
Seq | |
, BOOST_MPL_AUX_STATIC_CAST(aux::type_wrapper<Key>*, 0) | |
) ) | |
> | |
{ | |
#endif | |
}; | |
template< typename Tag > | |
struct order_impl | |
{ | |
template< typename Seq, typename Key > struct apply | |
: if_< | |
typename has_key_impl<Tag>::template apply<Seq,Key> | |
, x_order_impl<Seq,Key> | |
, void_ | |
>::type | |
{ | |
}; | |
}; | |
BOOST_MPL_ALGORITM_TRAITS_LAMBDA_SPEC(2,order_impl) | |
}} | |
#endif // BOOST_MPL_AUX_ORDER_IMPL_HPP_INCLUDED |