compiler/boost/preprocessor/list/rest_n.hpp

   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_REST_N_HPP
  15 # define BOOST_PREPROCESSOR_LIST_REST_N_HPP
  16 #
  17 # include <boost/preprocessor/arithmetic/dec.hpp>
  18 # include <boost/preprocessor/config/config.hpp>
  19 # include <boost/preprocessor/control/while.hpp>
  20 # include <boost/preprocessor/list/adt.hpp>
  21 # include <boost/preprocessor/tuple/elem.hpp>
  22 #
  23 # /* BOOST_PP_LIST_REST_N */
  24 #
  25 # if ~BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_EDG()
  26 #    define BOOST_PP_LIST_REST_N(count, list) BOOST_PP_TUPLE_ELEM(2, 0, BOOST_PP_WHILE(BOOST_PP_LIST_REST_N_P, BOOST_PP_LIST_REST_N_O, (list, count)))
  27 # else
  28 #    define BOOST_PP_LIST_REST_N(count, list) BOOST_PP_LIST_REST_N_I(count, list)
  29 #    define BOOST_PP_LIST_REST_N_I(count, list) BOOST_PP_TUPLE_ELEM(2, 0, BOOST_PP_WHILE(BOOST_PP_LIST_REST_N_P, BOOST_PP_LIST_REST_N_O, (list, count)))
  30 # endif
  31 #
  32 # if ~BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_EDG()
  33 #    define BOOST_PP_LIST_REST_N_P(d, lc) BOOST_PP_TUPLE_ELEM(2, 1, lc)
  34 # else
  35 #    define BOOST_PP_LIST_REST_N_P(d, lc) BOOST_PP_LIST_REST_N_P_I lc
  36 #    define BOOST_PP_LIST_REST_N_P_I(list, count) count
  37 # endif
  38 #
  39 # if ~BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_EDG()
  40 #    define BOOST_PP_LIST_REST_N_O(d, lc) (BOOST_PP_LIST_REST(BOOST_PP_TUPLE_ELEM(2, 0, lc)), BOOST_PP_DEC(BOOST_PP_TUPLE_ELEM(2, 1, lc)))
  41 # else
  42 #    define BOOST_PP_LIST_REST_N_O(d, lc) BOOST_PP_LIST_REST_N_O_I lc
  43 #    define BOOST_PP_LIST_REST_N_O_I(list, count) (BOOST_PP_LIST_REST(list), BOOST_PP_DEC(count))
  44 # endif
  45 #
  46 # /* BOOST_PP_LIST_REST_N_D */
  47 #
  48 # if ~BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_EDG()
  49 #    define BOOST_PP_LIST_REST_N_D(d, count, list) BOOST_PP_TUPLE_ELEM(2, 0, BOOST_PP_WHILE_ ## d(BOOST_PP_LIST_REST_N_P, BOOST_PP_LIST_REST_N_O, (list, count)))
  50 # else
  51 #    define BOOST_PP_LIST_REST_N_D(d, count, list) BOOST_PP_LIST_REST_N_D_I(d, count, list)
  52 #    define BOOST_PP_LIST_REST_N_D_I(d, count, list) BOOST_PP_TUPLE_ELEM(2, 0, BOOST_PP_WHILE_ ## d(BOOST_PP_LIST_REST_N_P, BOOST_PP_LIST_REST_N_O, (list, count)))
  53 # endif
  54 #
  55 # endif