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| 2 | #ifndef BOOST_MPL_HAS_KEY_HPP_INCLUDED |
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| 3 | #define BOOST_MPL_HAS_KEY_HPP_INCLUDED |
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| 4 | |
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| 5 | // Copyright Aleksey Gurtovoy 2003-2004 |
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| 6 | // Copyright David Abrahams 2003-2004 |
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| 7 | // |
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| 8 | // Distributed under the Boost Software License, Version 1.0. |
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| 9 | // (See accompanying file LICENSE_1_0.txt or copy at |
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| 10 | // http://www.boost.org/LICENSE_1_0.txt) |
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| 11 | // |
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| 12 | // See http://www.boost.org/libs/mpl for documentation. |
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| 13 | |
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| 14 | // $Source: /cvsroot/boost/boost/boost/mpl/has_key.hpp,v $ |
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| 15 | // $Date: 2004/09/02 15:40:41 $ |
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| 16 | // $Revision: 1.3 $ |
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| 17 | |
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| 18 | #include <boost/mpl/has_key_fwd.hpp> |
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| 19 | #include <boost/mpl/sequence_tag.hpp> |
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| 20 | #include <boost/mpl/aux_/has_key_impl.hpp> |
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| 21 | #include <boost/mpl/aux_/na_spec.hpp> |
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| 22 | #include <boost/mpl/aux_/lambda_support.hpp> |
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| 23 | |
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| 24 | namespace boost { namespace mpl { |
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| 25 | |
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| 26 | template< |
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| 27 | typename BOOST_MPL_AUX_NA_PARAM(AssociativeSequence) |
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| 28 | , typename BOOST_MPL_AUX_NA_PARAM(Key) |
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| 29 | > |
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| 30 | struct has_key |
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| 31 | : has_key_impl< typename sequence_tag<AssociativeSequence>::type > |
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| 32 | ::template apply<AssociativeSequence,Key> |
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| 33 | { |
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| 34 | BOOST_MPL_AUX_LAMBDA_SUPPORT(2,has_key,(AssociativeSequence,Key)) |
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| 35 | }; |
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| 36 | |
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| 37 | BOOST_MPL_AUX_NA_SPEC(2, has_key) |
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| 38 | |
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| 39 | }} |
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| 40 | |
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| 41 | #endif // BOOST_MPL_HAS_KEY_HPP_INCLUDED |
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