cat.hpp 1.5 KB

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  1. # /* Copyright (C) 2001
  2. # * Housemarque Oy
  3. # * http://www.housemarque.com
  4. # *
  5. # * Distributed under the Boost Software License, Version 1.0. (See
  6. # * accompanying file LICENSE_1_0.txt or copy at
  7. # * http://www.boost.org/LICENSE_1_0.txt)
  8. # */
  9. #
  10. # /* Revised by Paul Mensonides (2002) */
  11. #
  12. # /* See http://www.boost.org for most recent version. */
  13. #
  14. # ifndef BOOST_PREPROCESSOR_LIST_CAT_HPP
  15. # define BOOST_PREPROCESSOR_LIST_CAT_HPP
  16. #
  17. # include <boost/preprocessor/cat.hpp>
  18. # include <boost/preprocessor/config/config.hpp>
  19. # include <boost/preprocessor/list/adt.hpp>
  20. # include <boost/preprocessor/list/fold_left.hpp>
  21. #
  22. # /* BOOST_PP_LIST_CAT */
  23. #
  24. # if ~BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_EDG()
  25. # define BOOST_PP_LIST_CAT(list) BOOST_PP_LIST_FOLD_LEFT(BOOST_PP_LIST_CAT_O, BOOST_PP_LIST_FIRST(list), BOOST_PP_LIST_REST(list))
  26. # else
  27. # define BOOST_PP_LIST_CAT(list) BOOST_PP_LIST_CAT_I(list)
  28. # define BOOST_PP_LIST_CAT_I(list) BOOST_PP_LIST_FOLD_LEFT(BOOST_PP_LIST_CAT_O, BOOST_PP_LIST_FIRST(list), BOOST_PP_LIST_REST(list))
  29. # endif
  30. #
  31. # define BOOST_PP_LIST_CAT_O(d, s, x) BOOST_PP_CAT(s, x)
  32. #
  33. # /* BOOST_PP_LIST_CAT_D */
  34. #
  35. # if ~BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_EDG()
  36. # define BOOST_PP_LIST_CAT_D(d, list) BOOST_PP_LIST_FOLD_LEFT_ ## d(BOOST_PP_LIST_CAT_O, BOOST_PP_LIST_FIRST(list), BOOST_PP_LIST_REST(list))
  37. # else
  38. # define BOOST_PP_LIST_CAT_D(d, list) BOOST_PP_LIST_CAT_D_I(d, list)
  39. # define BOOST_PP_LIST_CAT_D_I(d, list) BOOST_PP_LIST_FOLD_LEFT_ ## d(BOOST_PP_LIST_CAT_O, BOOST_PP_LIST_FIRST(list), BOOST_PP_LIST_REST(list))
  40. # endif
  41. #
  42. # endif