end_impl.hpp 1.3 KB

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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_END_IMPL_05062005_0906)
  7. #define FUSION_END_IMPL_05062005_0906
  8. namespace boost { namespace fusion
  9. {
  10. struct filter_view_tag;
  11. template <typename Category, typename First, typename Last, typename Pred>
  12. struct filter_iterator;
  13. namespace extension
  14. {
  15. template <typename Tag>
  16. struct end_impl;
  17. template <>
  18. struct end_impl<filter_view_tag>
  19. {
  20. template <typename Sequence>
  21. struct apply
  22. {
  23. typedef typename Sequence::last_type last_type;
  24. typedef typename Sequence::pred_type pred_type;
  25. typedef typename Sequence::category category;
  26. typedef filter_iterator<category,last_type, last_type, pred_type> type;
  27. BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
  28. static type
  29. call(Sequence& s)
  30. {
  31. return type(s.last());
  32. }
  33. };
  34. };
  35. }
  36. }}
  37. #endif