nview_iterator.hpp 2.3 KB

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  1. /*=============================================================================
  2. Copyright (c) 2009 Hartmut Kaiser
  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(BOOST_FUSION_NVIEW_ITERATOR_SEP_23_2009_0948PM)
  7. #define BOOST_FUSION_NVIEW_ITERATOR_SEP_23_2009_0948PM
  8. #include <boost/fusion/support/config.hpp>
  9. #include <boost/fusion/support/iterator_base.hpp>
  10. #include <boost/fusion/support/category_of.hpp>
  11. #include <boost/fusion/sequence/intrinsic/begin.hpp>
  12. #include <boost/fusion/sequence/intrinsic/end.hpp>
  13. #include <boost/fusion/view/nview/detail/size_impl.hpp>
  14. #include <boost/fusion/view/nview/detail/begin_impl.hpp>
  15. #include <boost/fusion/view/nview/detail/end_impl.hpp>
  16. #include <boost/fusion/view/nview/detail/deref_impl.hpp>
  17. #include <boost/fusion/view/nview/detail/value_of_impl.hpp>
  18. #include <boost/fusion/view/nview/detail/next_impl.hpp>
  19. #include <boost/fusion/view/nview/detail/prior_impl.hpp>
  20. #include <boost/fusion/view/nview/detail/at_impl.hpp>
  21. #include <boost/fusion/view/nview/detail/value_at_impl.hpp>
  22. #include <boost/fusion/view/nview/detail/advance_impl.hpp>
  23. #include <boost/fusion/view/nview/detail/distance_impl.hpp>
  24. #include <boost/fusion/view/nview/detail/equal_to_impl.hpp>
  25. namespace boost { namespace fusion
  26. {
  27. struct nview_iterator_tag;
  28. struct random_access_traversal_tag;
  29. template<typename Sequence, typename Pos>
  30. struct nview_iterator
  31. : iterator_base<nview_iterator<Sequence, Pos> >
  32. {
  33. typedef nview_iterator_tag fusion_tag;
  34. typedef random_access_traversal_tag category;
  35. typedef Sequence sequence_type;
  36. typedef Pos first_type;
  37. BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
  38. explicit nview_iterator(Sequence& in_seq)
  39. : seq(in_seq) {}
  40. Sequence& seq;
  41. private:
  42. // silence MSVC warning C4512: assignment operator could not be generated
  43. nview_iterator& operator= (nview_iterator const&);
  44. };
  45. }}
  46. #ifdef BOOST_FUSION_WORKAROUND_FOR_LWG_2408
  47. namespace std
  48. {
  49. template <typename Sequence, typename Pos>
  50. struct iterator_traits< ::boost::fusion::nview_iterator<Sequence, Pos> >
  51. { };
  52. }
  53. #endif
  54. #endif