| 1 | |
|---|---|
| 2 | #ifndef BOOST_MPL_MAP_AUX_HAS_KEY_IMPL_HPP_INCLUDED |
| 3 | #define BOOST_MPL_MAP_AUX_HAS_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/has_key_fwd.hpp> |
| 19 | #include <boost/mpl/map/aux_/tag.hpp> |
| 20 | #include <boost/mpl/map/aux_/at_impl.hpp> |
| 21 | #include <boost/mpl/void.hpp> |
| 22 | #include <boost/mpl/aux_/config/typeof.hpp> |
| 23 | |
| 24 | namespace boost { namespace mpl { |
| 25 | |
| 26 | template<> |
| 27 | struct has_key_impl< aux::map_tag > |
| 28 | { |
| 29 | template< typename Map, typename Key > struct apply |
| 30 | #if defined(BOOST_MPL_CFG_TYPEOF_BASED_SEQUENCES) |
| 31 | : is_not_void_< |
| 32 | typename at_impl<aux::map_tag> |
| 33 | ::apply<Map,Key>::type |
| 34 | > |
| 35 | #else |
| 36 | : bool_< ( x_order_impl<Map,Key>::value > 1 ) > |
| 37 | #endif |
| 38 | { |
| 39 | }; |
| 40 | }; |
| 41 | |
| 42 | }} |
| 43 | |
| 44 | #endif // BOOST_MPL_MAP_AUX_HAS_KEY_IMPL_HPP_INCLUDED |
| 45 |