1 | |
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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 |