| |
| #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 |