tag_of.hpp 3.0 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(BOOST_FUSION_TAG_OF_09262006_1900)
  7. #define BOOST_FUSION_TAG_OF_09262006_1900
  8. #include <boost/fusion/support/config.hpp>
  9. #include <boost/fusion/support/tag_of_fwd.hpp>
  10. namespace boost { namespace tuples
  11. {
  12. struct null_type;
  13. template <
  14. class T0, class T1, class T2, class T3, class T4,
  15. class T5, class T6, class T7, class T8, class T9
  16. >
  17. class tuple;
  18. template <class Head, class Tail>
  19. struct cons;
  20. }}
  21. namespace boost { namespace fusion
  22. {
  23. struct boost_tuple_tag;
  24. struct fusion_sequence_tag;
  25. namespace traits
  26. {
  27. template <
  28. class T0, class T1, class T2, class T3, class T4,
  29. class T5, class T6, class T7, class T8, class T9
  30. >
  31. #if defined(BOOST_NO_PARTIAL_SPECIALIZATION_IMPLICIT_DEFAULT_ARGS)
  32. struct tag_of<tuples::tuple<T0, T1, T2, T3, T4, T5, T6, T7, T8, T9>, void >
  33. #else
  34. struct tag_of<tuples::tuple<T0, T1, T2, T3, T4, T5, T6, T7, T8, T9> >
  35. #endif
  36. {
  37. typedef boost_tuple_tag type;
  38. };
  39. template <class Head, class Tail>
  40. #if defined(BOOST_NO_PARTIAL_SPECIALIZATION_IMPLICIT_DEFAULT_ARGS)
  41. struct tag_of<tuples::cons<Head, Tail>, void >
  42. #else
  43. struct tag_of<tuples::cons<Head, Tail> >
  44. #endif
  45. {
  46. typedef boost_tuple_tag type;
  47. };
  48. template <>
  49. struct tag_of<tuples::null_type>
  50. {
  51. typedef boost_tuple_tag type;
  52. };
  53. }
  54. }}
  55. namespace boost { namespace mpl
  56. {
  57. template<typename>
  58. struct sequence_tag;
  59. template <
  60. class T0, class T1, class T2, class T3, class T4,
  61. class T5, class T6, class T7, class T8, class T9
  62. >
  63. struct sequence_tag<tuples::tuple<T0, T1, T2, T3, T4, T5, T6, T7, T8, T9> >
  64. {
  65. typedef fusion::fusion_sequence_tag type;
  66. };
  67. template <
  68. class T0, class T1, class T2, class T3, class T4,
  69. class T5, class T6, class T7, class T8, class T9
  70. >
  71. struct sequence_tag<
  72. tuples::tuple<T0, T1, T2, T3, T4, T5, T6, T7, T8, T9> const
  73. >
  74. {
  75. typedef fusion::fusion_sequence_tag type;
  76. };
  77. template <class Head, class Tail>
  78. struct sequence_tag<tuples::cons<Head, Tail> >
  79. {
  80. typedef fusion::fusion_sequence_tag type;
  81. };
  82. template <class Head, class Tail>
  83. struct sequence_tag<tuples::cons<Head, Tail> const>
  84. {
  85. typedef fusion::fusion_sequence_tag type;
  86. };
  87. template <>
  88. struct sequence_tag<tuples::null_type>
  89. {
  90. typedef fusion::fusion_sequence_tag type;
  91. };
  92. template <>
  93. struct sequence_tag<tuples::null_type const>
  94. {
  95. typedef fusion::fusion_sequence_tag type;
  96. };
  97. }}
  98. #endif