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- /*=============================================================================
- Copyright (c) 2001-2011 Joel de Guzman
- Copyright (c) 2005-2006 Dan Marsden
- Distributed under the Boost Software License, Version 1.0. (See accompanying
- file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
- ==============================================================================*/
- #if !defined(BOOST_FUSION_HAS_KEY_IMPL_31122005_1647)
- #define BOOST_FUSION_HAS_KEY_IMPL_31122005_1647
- #include <boost/fusion/support/config.hpp>
- #include <boost/mpl/has_key.hpp>
- namespace boost { namespace fusion
- {
- struct mpl_sequence_tag;
- namespace extension
- {
- template <typename Tag>
- struct has_key_impl;
- template <>
- struct has_key_impl<mpl_sequence_tag>
- {
- template <typename Sequence, typename Key>
- struct apply : mpl::has_key<Sequence, Key> {};
- };
- }
- }}
- #endif
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