for_each.hpp 6.7 KB

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  1. // Copyright Daniel Wallin 2005.
  2. // Distributed under the Boost Software License, Version 1.0.
  3. // (See accompanying file LICENSE_1_0.txt or copy at
  4. // http://www.boost.org/LICENSE_1_0.txt)
  5. #ifndef BOOST_PARAMETER_AUX_PREPROCESSOR_IMPL_FOR_EACH_HPP
  6. #define BOOST_PARAMETER_AUX_PREPROCESSOR_IMPL_FOR_EACH_HPP
  7. #define BOOST_PARAMETER_AUX_PP_FOR_EACH_head_aux2(x, y) (x, y), ~
  8. #define BOOST_PARAMETER_AUX_PP_FOR_EACH_head_aux3(x, y, z) (x, y, z), ~
  9. #define BOOST_PARAMETER_AUX_PP_FOR_EACH_head_aux4(x, y, z, u) (x, y, z, u), ~
  10. #define \
  11. BOOST_PARAMETER_AUX_PP_FOR_EACH_pred_aux_BOOST_PARAMETER_AUX_PP_FOR_EACH_END_S
  12. /**/
  13. #include <boost/preprocessor/detail/split.hpp>
  14. #define BOOST_PARAMETER_AUX_PP_FOR_EACH_pred_SPLIT_FIRST(x) \
  15. BOOST_PP_SPLIT(0, x)
  16. /**/
  17. #include <boost/preprocessor/cat.hpp>
  18. #define BOOST_PARAMETER_AUX_PP_FOR_EACH_head(n, x) \
  19. BOOST_PP_SPLIT( \
  20. 0 \
  21. , BOOST_PP_CAT(BOOST_PARAMETER_AUX_PP_FOR_EACH_head_aux, n) x \
  22. )
  23. /**/
  24. #include <boost/preprocessor/facilities/is_empty.hpp>
  25. #include <boost/preprocessor/logical/not.hpp>
  26. #define BOOST_PARAMETER_AUX_PP_FOR_EACH_pred_aux_check(x) \
  27. BOOST_PP_NOT(BOOST_PP_IS_EMPTY( \
  28. BOOST_PP_CAT(BOOST_PARAMETER_AUX_PP_FOR_EACH_pred_aux_, x) \
  29. )), ~
  30. /**/
  31. #define BOOST_PARAMETER_AUX_PP_FOR_EACH_pred_aux2(x, y) \
  32. BOOST_PARAMETER_AUX_PP_FOR_EACH_pred_aux_check(x)
  33. /**/
  34. #define BOOST_PARAMETER_AUX_PP_FOR_EACH_pred_aux3(x, y, z) \
  35. BOOST_PARAMETER_AUX_PP_FOR_EACH_pred_aux_check(x)
  36. /**/
  37. #define BOOST_PARAMETER_AUX_PP_FOR_EACH_pred_aux4(x, y, z, u) \
  38. BOOST_PARAMETER_AUX_PP_FOR_EACH_pred_aux_check(x)
  39. /**/
  40. #define BOOST_PARAMETER_AUX_PP_FOR_EACH_pred_aux0(n, x) \
  41. BOOST_PP_CAT(BOOST_PARAMETER_AUX_PP_FOR_EACH_pred_aux, n) x
  42. /**/
  43. #include <boost/preprocessor/tuple/elem.hpp>
  44. #if BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_MSVC()
  45. #define BOOST_PARAMETER_AUX_PP_FOR_EACH_pred(r, state) \
  46. BOOST_PARAMETER_AUX_PP_FOR_EACH_pred_SPLIT_FIRST( \
  47. BOOST_PARAMETER_AUX_PP_FOR_EACH_pred_aux0( \
  48. BOOST_PP_TUPLE_ELEM(5, 3, state) \
  49. , BOOST_PP_TUPLE_ELEM(5, 0, state) \
  50. ) \
  51. )
  52. /**/
  53. #else // !(BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_MSVC())
  54. #define BOOST_PARAMETER_AUX_PP_FOR_EACH_pred(r, state) \
  55. BOOST_PP_SPLIT( \
  56. 0 \
  57. , BOOST_PARAMETER_AUX_PP_FOR_EACH_pred_aux0( \
  58. BOOST_PP_TUPLE_ELEM(5, 3, state) \
  59. , BOOST_PP_TUPLE_ELEM(5, 0, state) \
  60. ) \
  61. )
  62. /**/
  63. #endif // BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_MSVC()
  64. #include <boost/preprocessor/arithmetic/inc.hpp>
  65. #include <boost/preprocessor/tuple/eat.hpp>
  66. #define BOOST_PARAMETER_AUX_PP_FOR_EACH_op(r, state) \
  67. ( \
  68. BOOST_PP_TUPLE_EAT(BOOST_PP_TUPLE_ELEM(5, 3, state)) \
  69. BOOST_PP_TUPLE_ELEM(5, 0, state) \
  70. , BOOST_PP_TUPLE_ELEM(5, 1, state) \
  71. , BOOST_PP_TUPLE_ELEM(5, 2, state) \
  72. , BOOST_PP_TUPLE_ELEM(5, 3, state) \
  73. , BOOST_PP_INC(BOOST_PP_TUPLE_ELEM(5, 4, state)) \
  74. )
  75. /**/
  76. #define BOOST_PARAMETER_AUX_PP_FOR_EACH_macro(r, state) \
  77. BOOST_PP_TUPLE_ELEM(5, 2, state)( \
  78. r \
  79. , BOOST_PP_TUPLE_ELEM(5, 4, state) \
  80. , BOOST_PARAMETER_AUX_PP_FOR_EACH_head( \
  81. BOOST_PP_TUPLE_ELEM(5, 3, state) \
  82. , BOOST_PP_TUPLE_ELEM(5, 0, state) \
  83. ) \
  84. , BOOST_PP_TUPLE_ELEM(5, 1, state) \
  85. )
  86. /**/
  87. #include <boost/preprocessor/punctuation/comma_if.hpp>
  88. #define BOOST_PARAMETER_AUX_PP_FOR_EACH_build_end_sentinel(z, n, text) \
  89. BOOST_PP_COMMA_IF(n) BOOST_PARAMETER_AUX_PP_FOR_EACH_END_S
  90. /**/
  91. #include <boost/preprocessor/repetition/repeat.hpp>
  92. #define BOOST_PARAMETER_AUX_PP_FOR_EACH_build_end_sentinel_tuple(arity) \
  93. ( \
  94. BOOST_PP_REPEAT( \
  95. arity, BOOST_PARAMETER_AUX_PP_FOR_EACH_build_end_sentinel, _ \
  96. ) \
  97. )
  98. /**/
  99. #include <boost/preprocessor/repetition/for.hpp>
  100. #define BOOST_PARAMETER_AUX_PP_FOR_EACH_R(r, arity, list, data, macro) \
  101. BOOST_PP_CAT(BOOST_PP_FOR_, r)( \
  102. (list \
  103. BOOST_PARAMETER_AUX_PP_FOR_EACH_build_end_sentinel_tuple(arity) \
  104. , data \
  105. , macro \
  106. , arity \
  107. , 0 \
  108. ) \
  109. , BOOST_PARAMETER_AUX_PP_FOR_EACH_pred \
  110. , BOOST_PARAMETER_AUX_PP_FOR_EACH_op \
  111. , BOOST_PARAMETER_AUX_PP_FOR_EACH_macro \
  112. )
  113. /**/
  114. #include <boost/preprocessor/repetition/deduce_r.hpp>
  115. #define BOOST_PARAMETER_AUX_PP_FOR_EACH(arity, list, data, macro) \
  116. BOOST_PARAMETER_AUX_PP_FOR_EACH_R( \
  117. BOOST_PP_DEDUCE_R(), arity, list, data, macro \
  118. )
  119. /**/
  120. #endif // include guard