replace.hpp 2.7 KB

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  1. # /* **************************************************************************
  2. # * *
  3. # * (C) Copyright Paul Mensonides 2002.
  4. # * Distributed under the Boost Software License, Version 1.0. (See
  5. # * accompanying file LICENSE_1_0.txt or copy at
  6. # * http://www.boost.org/LICENSE_1_0.txt)
  7. # * *
  8. # ************************************************************************** */
  9. #
  10. # /* See http://www.boost.org for most recent version. */
  11. #
  12. # ifndef BOOST_PREPROCESSOR_ARRAY_REPLACE_HPP
  13. # define BOOST_PREPROCESSOR_ARRAY_REPLACE_HPP
  14. #
  15. # include <boost/preprocessor/arithmetic/inc.hpp>
  16. # include <boost/preprocessor/array/elem.hpp>
  17. # include <boost/preprocessor/array/push_back.hpp>
  18. # include <boost/preprocessor/comparison/not_equal.hpp>
  19. # include <boost/preprocessor/config/config.hpp>
  20. # include <boost/preprocessor/control/deduce_d.hpp>
  21. # include <boost/preprocessor/control/iif.hpp>
  22. # include <boost/preprocessor/control/while.hpp>
  23. # include <boost/preprocessor/tuple/elem.hpp>
  24. #
  25. # /* BOOST_PP_ARRAY_REPLACE */
  26. #
  27. # define BOOST_PP_ARRAY_REPLACE(array, i, elem) BOOST_PP_ARRAY_REPLACE_I(BOOST_PP_DEDUCE_D(), array, i, elem)
  28. # define BOOST_PP_ARRAY_REPLACE_I(d, array, i, elem) BOOST_PP_ARRAY_REPLACE_D(d, array, i, elem)
  29. #
  30. # /* BOOST_PP_ARRAY_REPLACE_D */
  31. #
  32. # if ~BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_EDG()
  33. # define BOOST_PP_ARRAY_REPLACE_D(d, array, i, elem) BOOST_PP_TUPLE_ELEM(5, 3, BOOST_PP_WHILE_ ## d(BOOST_PP_ARRAY_REPLACE_P, BOOST_PP_ARRAY_REPLACE_O, (0, i, elem, (0, ()), array)))
  34. # else
  35. # define BOOST_PP_ARRAY_REPLACE_D(d, array, i, elem) BOOST_PP_ARRAY_REPLACE_D_I(d, array, i, elem)
  36. # define BOOST_PP_ARRAY_REPLACE_D_I(d, array, i, elem) BOOST_PP_TUPLE_ELEM(5, 3, BOOST_PP_WHILE_ ## d(BOOST_PP_ARRAY_REPLACE_P, BOOST_PP_ARRAY_REPLACE_O, (0, i, elem, (0, ()), array)))
  37. # endif
  38. #
  39. # define BOOST_PP_ARRAY_REPLACE_P(d, state) BOOST_PP_NOT_EQUAL(BOOST_PP_TUPLE_ELEM(5, 0, state), BOOST_PP_ARRAY_SIZE(BOOST_PP_TUPLE_ELEM(5, 4, state)))
  40. #
  41. # if BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_STRICT()
  42. # define BOOST_PP_ARRAY_REPLACE_O(d, state) BOOST_PP_ARRAY_REPLACE_O_I state
  43. # else
  44. # define BOOST_PP_ARRAY_REPLACE_O(d, state) BOOST_PP_ARRAY_REPLACE_O_I(BOOST_PP_TUPLE_ELEM(5, 0, state), BOOST_PP_TUPLE_ELEM(5, 1, state), BOOST_PP_TUPLE_ELEM(5, 2, state), BOOST_PP_TUPLE_ELEM(5, 3, state), BOOST_PP_TUPLE_ELEM(5, 4, state))
  45. # endif
  46. #
  47. # define BOOST_PP_ARRAY_REPLACE_O_I(n, i, elem, res, arr) (BOOST_PP_INC(n), i, elem, BOOST_PP_ARRAY_PUSH_BACK(res, BOOST_PP_IIF(BOOST_PP_NOT_EQUAL(n, i), BOOST_PP_ARRAY_ELEM(n, arr), elem)), arr)
  48. #
  49. # endif