| 1 | |
|---|---|
| 2 | #ifndef BOOST_MPL_MAP_AUX_ERASE_KEY_IMPL_HPP_INCLUDED |
| 3 | #define BOOST_MPL_MAP_AUX_ERASE_KEY_IMPL_HPP_INCLUDED |
| 4 | |
| 5 | // Copyright Aleksey Gurtovoy 2003-2004 |
| 6 | // Copyright David Abrahams 2003-2004 |
| 7 | // |
| 8 | // Distributed under the Boost Software License, Version 1.0. |
| 9 | // (See accompanying file LICENSE_1_0.txt or copy at |
| 10 | // http://www.boost.org/LICENSE_1_0.txt) |
| 11 | // |
| 12 | // See http://www.boost.org/libs/mpl for documentation. |
| 13 | |
| 14 | // $Id$ |
| 15 | // $Date$ |
| 16 | // $Revision$ |
| 17 | |
| 18 | #include <boost/mpl/erase_key_fwd.hpp> |
| 19 | #include <boost/mpl/map/aux_/has_key_impl.hpp> |
| 20 | #include <boost/mpl/map/aux_/item.hpp> |
| 21 | #include <boost/mpl/map/aux_/tag.hpp> |
| 22 | #include <boost/mpl/identity.hpp> |
| 23 | #include <boost/mpl/base.hpp> |
| 24 | #include <boost/mpl/eval_if.hpp> |
| 25 | |
| 26 | #include <boost/type_traits/is_same.hpp> |
| 27 | |
| 28 | namespace boost { namespace mpl { |
| 29 | |
| 30 | template<> |
| 31 | struct erase_key_impl< aux::map_tag > |
| 32 | { |
| 33 | template< |
| 34 | typename Map |
| 35 | , typename Key |
| 36 | > |
| 37 | struct apply |
| 38 | : eval_if< |
| 39 | has_key_impl<aux::map_tag>::apply<Map,Key> |
| 40 | , eval_if< |
| 41 | is_same< Key,typename Map::key_ > |
| 42 | , base<Map> |
| 43 | , identity< m_mask<Key,Map> > |
| 44 | > |
| 45 | , identity<Map> |
| 46 | > |
| 47 | { |
| 48 | }; |
| 49 | }; |
| 50 | |
| 51 | }} |
| 52 | |
| 53 | #endif // BOOST_MPL_MAP_AUX_ERASE_KEY_IMPL_HPP_INCLUDED |
| 54 |