| 1 | |
|---|---|
| 2 | #ifndef BOOST_MPL_HAS_KEY_HPP_INCLUDED |
| 3 | #define BOOST_MPL_HAS_KEY_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/sequence_tag.hpp> |
| 20 | #include <boost/mpl/aux_/has_key_impl.hpp> |
| 21 | #include <boost/mpl/aux_/na_spec.hpp> |
| 22 | #include <boost/mpl/aux_/lambda_support.hpp> |
| 23 | |
| 24 | namespace boost { namespace mpl { |
| 25 | |
| 26 | template< |
| 27 | typename BOOST_MPL_AUX_NA_PARAM(AssociativeSequence) |
| 28 | , typename BOOST_MPL_AUX_NA_PARAM(Key) |
| 29 | > |
| 30 | struct has_key |
| 31 | : has_key_impl< typename sequence_tag<AssociativeSequence>::type > |
| 32 | ::template apply<AssociativeSequence,Key> |
| 33 | { |
| 34 | BOOST_MPL_AUX_LAMBDA_SUPPORT(2,has_key,(AssociativeSequence,Key)) |
| 35 | }; |
| 36 | |
| 37 | BOOST_MPL_AUX_NA_SPEC(2, has_key) |
| 38 | |
| 39 | }} |
| 40 | |
| 41 | #endif // BOOST_MPL_HAS_KEY_HPP_INCLUDED |
| 42 |