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76 lines
2.1 KiB
76 lines
2.1 KiB
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#ifndef BOOST_MPL_AUX_ORDER_IMPL_HPP_INCLUDED |
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#define BOOST_MPL_AUX_ORDER_IMPL_HPP_INCLUDED |
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// Copyright Aleksey Gurtovoy 2003-2004 |
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// Copyright David Abrahams 2003-2004 |
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// |
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// Distributed under the Boost Software License, Version 1.0. |
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// (See accompanying file LICENSE_1_0.txt or copy at |
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// http://www.boost.org/LICENSE_1_0.txt) |
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// |
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// See http://www.boost.org/libs/mpl for documentation. |
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// $Id: order_impl.hpp 49267 2008-10-11 06:19:02Z agurtovoy $ |
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// $Date: 2008-10-11 02:19:02 -0400 (Sat, 11 Oct 2008) $ |
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// $Revision: 49267 $ |
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#include <boost/mpl/order_fwd.hpp> |
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#include <boost/mpl/if.hpp> |
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#include <boost/mpl/long.hpp> |
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#include <boost/mpl/has_key.hpp> |
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#include <boost/mpl/aux_/overload_names.hpp> |
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#include <boost/mpl/aux_/static_cast.hpp> |
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#include <boost/mpl/aux_/type_wrapper.hpp> |
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#include <boost/mpl/aux_/traits_lambda_spec.hpp> |
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#include <boost/mpl/aux_/config/msvc.hpp> |
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#include <boost/mpl/aux_/config/static_constant.hpp> |
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#include <boost/mpl/aux_/config/workaround.hpp> |
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namespace boost { namespace mpl { |
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// default implementation; requires 'Seq' to provide corresponding overloads |
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// of BOOST_MPL_AUX_OVERLOAD_ORDER_BY_KEY |
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template< typename Seq, typename Key > struct x_order_impl |
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#if BOOST_WORKAROUND(BOOST_MSVC, BOOST_TESTED_AT(1400)) \ |
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|| BOOST_WORKAROUND(__EDG_VERSION__, <= 245) |
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{ |
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BOOST_STATIC_CONSTANT(long, value = |
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sizeof( BOOST_MPL_AUX_OVERLOAD_CALL_ORDER_BY_KEY( |
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Seq |
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, BOOST_MPL_AUX_STATIC_CAST(aux::type_wrapper<Key>*, 0) |
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) ) |
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); |
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typedef long_<value> type; |
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#else // ISO98 C++ |
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: long_< |
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sizeof( BOOST_MPL_AUX_OVERLOAD_CALL_ORDER_BY_KEY( |
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Seq |
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, BOOST_MPL_AUX_STATIC_CAST(aux::type_wrapper<Key>*, 0) |
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) ) |
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> |
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{ |
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#endif |
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}; |
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template< typename Tag > |
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struct order_impl |
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{ |
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template< typename Seq, typename Key > struct apply |
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: if_< |
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typename has_key_impl<Tag>::template apply<Seq,Key> |
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, x_order_impl<Seq,Key> |
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, void_ |
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>::type |
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{ |
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}; |
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}; |
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BOOST_MPL_ALGORITM_TRAITS_LAMBDA_SPEC(2,order_impl) |
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}} |
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#endif // BOOST_MPL_AUX_ORDER_IMPL_HPP_INCLUDED
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