replace.hpp 1.9 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_SEQ_REPLACE_HPP
  13. # define BOOST_PREPROCESSOR_SEQ_REPLACE_HPP
  14. #
  15. # include <boost/preprocessor/arithmetic/dec.hpp>
  16. # include <boost/preprocessor/arithmetic/inc.hpp>
  17. # include <boost/preprocessor/config/config.hpp>
  18. # include <boost/preprocessor/comparison/equal.hpp>
  19. # include <boost/preprocessor/control/iif.hpp>
  20. # include <boost/preprocessor/seq/first_n.hpp>
  21. # include <boost/preprocessor/seq/rest_n.hpp>
  22. # include <boost/preprocessor/seq/size.hpp>
  23. #
  24. # /* BOOST_PP_SEQ_REPLACE */
  25. #
  26. # if ~BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_EDG()
  27. # define BOOST_PP_SEQ_REPLACE(seq, i, elem) BOOST_PP_SEQ_FIRST_N(i, seq) (elem) BOOST_PP_SEQ_REPLACE_DETAIL_REST(seq, i)
  28. # else
  29. # define BOOST_PP_SEQ_REPLACE(seq, i, elem) BOOST_PP_SEQ_REPLACE_I(seq, i, elem)
  30. # define BOOST_PP_SEQ_REPLACE_I(seq, i, elem) BOOST_PP_SEQ_FIRST_N(i, seq) (elem) BOOST_PP_SEQ_REPLACE_DETAIL_REST(seq, i)
  31. # endif
  32. #
  33. # define BOOST_PP_SEQ_REPLACE_DETAIL_REST_EMPTY(seq, i)
  34. # define BOOST_PP_SEQ_REPLACE_DETAIL_REST_VALID(seq, i) BOOST_PP_SEQ_REST_N(BOOST_PP_INC(i), seq)
  35. # define BOOST_PP_SEQ_REPLACE_DETAIL_REST(seq, i) \
  36. BOOST_PP_IIF \
  37. ( \
  38. BOOST_PP_EQUAL(i,BOOST_PP_DEC(BOOST_PP_SEQ_SIZE(seq))), \
  39. BOOST_PP_SEQ_REPLACE_DETAIL_REST_EMPTY, \
  40. BOOST_PP_SEQ_REPLACE_DETAIL_REST_VALID \
  41. ) \
  42. (seq, i) \
  43. /**/
  44. #
  45. # endif