begin.hpp 1.0 KB

1234567891011121314151617181920212223242526272829303132
  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/fusion/support/config.hpp>
  9. #include <boost/mpl/begin_end.hpp>
  10. #include <boost/fusion/sequence/intrinsic/begin.hpp>
  11. #include <boost/fusion/adapted/mpl/detail/begin_impl.hpp>
  12. #include <boost/fusion/iterator/mpl/fusion_iterator.hpp>
  13. namespace boost { namespace mpl
  14. {
  15. template <typename Tag>
  16. struct begin_impl;
  17. template <>
  18. struct begin_impl<fusion::fusion_sequence_tag>
  19. {
  20. template <typename Sequence>
  21. struct apply
  22. {
  23. typedef fusion_iterator<typename fusion::result_of::begin<Sequence>::type> type;
  24. };
  25. };
  26. }}
  27. #endif