begin.hpp 991 B

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  1. /*=============================================================================
  2. Copyright (c) 2001-2011 Joel de Guzman
  3. Distributed under the Boost Software License, Version 1.0. (See accompanying
  4. file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
  5. ==============================================================================*/
  6. #if !defined(FUSION_BEGIN_10022005_1620)
  7. #define FUSION_BEGIN_10022005_1620
  8. #include <boost/mpl/begin_end.hpp>
  9. #include <boost/fusion/sequence/intrinsic/begin.hpp>
  10. #include <boost/fusion/adapted/mpl/detail/begin_impl.hpp>
  11. #include <boost/fusion/iterator/mpl/fusion_iterator.hpp>
  12. namespace boost { namespace mpl
  13. {
  14. template <typename Tag>
  15. struct begin_impl;
  16. template <>
  17. struct begin_impl<fusion::fusion_sequence_tag>
  18. {
  19. template <typename Sequence>
  20. struct apply
  21. {
  22. typedef fusion_iterator<typename fusion::result_of::begin<Sequence>::type> type;
  23. };
  24. };
  25. }}
  26. #endif