pop_front.hpp 1.8 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_POP_FRONT_HPP
  13. # define BOOST_PREPROCESSOR_ARRAY_POP_FRONT_HPP
  14. #
  15. # include <boost/preprocessor/arithmetic/dec.hpp>
  16. # include <boost/preprocessor/arithmetic/inc.hpp>
  17. # include <boost/preprocessor/array/elem.hpp>
  18. # include <boost/preprocessor/array/size.hpp>
  19. # include <boost/preprocessor/repetition/enum.hpp>
  20. # include <boost/preprocessor/repetition/deduce_z.hpp>
  21. #
  22. # /* BOOST_PP_ARRAY_POP_FRONT */
  23. #
  24. # define BOOST_PP_ARRAY_POP_FRONT(array) BOOST_PP_ARRAY_POP_FRONT_Z(BOOST_PP_DEDUCE_Z(), array)
  25. #
  26. # /* BOOST_PP_ARRAY_POP_FRONT_Z */
  27. #
  28. # if ~BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_EDG()
  29. # define BOOST_PP_ARRAY_POP_FRONT_Z(z, array) BOOST_PP_ARRAY_POP_FRONT_I(z, BOOST_PP_ARRAY_SIZE(array), array)
  30. # else
  31. # define BOOST_PP_ARRAY_POP_FRONT_Z(z, array) BOOST_PP_ARRAY_POP_FRONT_Z_D(z, array)
  32. # define BOOST_PP_ARRAY_POP_FRONT_Z_D(z, array) BOOST_PP_ARRAY_POP_FRONT_I(z, BOOST_PP_ARRAY_SIZE(array), array)
  33. # endif
  34. #
  35. # define BOOST_PP_ARRAY_POP_FRONT_I(z, size, array) (BOOST_PP_DEC(size), (BOOST_PP_ENUM_ ## z(BOOST_PP_DEC(size), BOOST_PP_ARRAY_POP_FRONT_M, array)))
  36. # define BOOST_PP_ARRAY_POP_FRONT_M(z, n, data) BOOST_PP_ARRAY_ELEM(BOOST_PP_INC(n), data)
  37. #
  38. # endif