/src/contrib/boost/mpl/zip_view.hpp

http://pythonocc.googlecode.com/ · C++ Header · 65 lines · 42 code · 12 blank · 11 comment · 0 complexity · c8ee90b35ac0658285385523256dce2f MD5 · raw file 

    

  1. #ifndef BOOST_MPL_ZIP_VIEW_HPP_INCLUDED
    2. 

  2. #define BOOST_MPL_ZIP_VIEW_HPP_INCLUDED
    3. 

  3. 

  4. // Copyright Aleksey Gurtovoy 2000-2010
    5. 

  5. // Copyright David Abrahams 2000-2002
    6. 

  6. //
    7. 

  7. // Distributed under the Boost Software License, Version 1.0.
    8. 

  8. // (See accompanying file LICENSE_1_0.txt or copy at 
    9. 

  9. // http://www.boost.org/LICENSE_1_0.txt)
    10. 

  10. //
    11. 

  11. // See http://www.boost.org/libs/mpl for documentation.
    12. 

  12. 

  13. // $Id: zip_view.hpp 61591 2010-04-26 21:31:09Z agurtovoy $
    14. 

  14. // $Date: 2010-04-26 17:31:09 -0400 (Mon, 26 Apr 2010) $
    15. 

  15. // $Revision: 61591 $
    16. 

  16. 

  17. #include <boost/mpl/transform.hpp>
    18. 

  18. #include <boost/mpl/begin_end.hpp>
    19. 

  19. #include <boost/mpl/iterator_tags.hpp>
    20. 

  20. #include <boost/mpl/next.hpp>
    21. 

  21. #include <boost/mpl/lambda.hpp>
    22. 

  22. #include <boost/mpl/deref.hpp>
    23. 

  23. #include <boost/mpl/aux_/na_spec.hpp>
    24. 

  24. 

  25. namespace boost { namespace mpl {
    26. 

  26. 

  27. template< typename IteratorSeq >
    28. 

  28. struct zip_iterator
    29. 

  29. {
    30. 

  30.     typedef forward_iterator_tag category;
    31. 

  31.     typedef typename transform1<
    32. 

  32.           IteratorSeq
    33. 

  33.         , deref<_1>
    34. 

  34.         >::type type;
    35. 

  35. 

  36.     typedef zip_iterator<
    37. 

  37.           typename transform1<
    38. 

  38.                 IteratorSeq
    39. 

  39.               , mpl::next<_1>
    40. 

  40.             >::type
    41. 

  41.         > next;
    42. 

  42. };
    43. 

  43. 

  44. template<
    45. 

  45.       typename BOOST_MPL_AUX_NA_PARAM(Sequences)
    46. 

  46.     >
    47. 

  47. struct zip_view
    48. 

  48. {
    49. 

  49.  private:
    50. 

  50.     typedef typename transform1< Sequences, mpl::begin<_1> >::type first_ones_;
    51. 

  51.     typedef typename transform1< Sequences, mpl::end<_1> >::type last_ones_;
    52. 

  52.     
    53. 

  53.  public:
    54. 

  54.     typedef nested_begin_end_tag tag;
    55. 

  55.     typedef zip_view type;
    56. 

  56.     typedef zip_iterator<first_ones_> begin;
    57. 

  57.     typedef zip_iterator<last_ones_> end;
    58. 

  58. };
    59. 

  59. 

  60. BOOST_MPL_AUX_NA_SPEC(1, zip_view)
    61. 

  61. 

  62. }}
    63. 

  63. 

  64. #endif // BOOST_MPL_ZIP_VIEW_HPP_INCLUDED
    65.