compiler/boost/preprocessor/list/size.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_SIZE_HPP
  15 # define BOOST_PREPROCESSOR_LIST_SIZE_HPP
  16 #
  17 # include <boost/preprocessor/arithmetic/inc.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 # include <boost/preprocessor/tuple/rem.hpp>
  23 #
  24 # /* BOOST_PP_LIST_SIZE */
  25 #
  26 # if ~BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_EDG()
  27 #    define BOOST_PP_LIST_SIZE(list) BOOST_PP_TUPLE_ELEM(2, 0, BOOST_PP_WHILE(BOOST_PP_LIST_SIZE_P, BOOST_PP_LIST_SIZE_O, (0, list)))
  28 # else
  29 #    define BOOST_PP_LIST_SIZE(list) BOOST_PP_LIST_SIZE_I(list)
  30 #    define BOOST_PP_LIST_SIZE_I(list) BOOST_PP_TUPLE_ELEM(2, 0, BOOST_PP_WHILE(BOOST_PP_LIST_SIZE_P, BOOST_PP_LIST_SIZE_O, (0, list)))
  31 # endif
  32 #
  33 # if ~BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_EDG()
  34 #    define BOOST_PP_LIST_SIZE_P(d, rl) BOOST_PP_LIST_IS_CONS(BOOST_PP_TUPLE_ELEM(2, 1, rl))
  35 # else
  36 #    define BOOST_PP_LIST_SIZE_P(d, rl) BOOST_PP_LIST_SIZE_P_I(BOOST_PP_TUPLE_REM_2 rl)
  37 #    define BOOST_PP_LIST_SIZE_P_I(im) BOOST_PP_LIST_SIZE_P_II(im)
  38 #    define BOOST_PP_LIST_SIZE_P_II(r, l) BOOST_PP_LIST_IS_CONS(l)
  39 # endif
  40 #
  41 # if ~BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_EDG()
  42 #    define BOOST_PP_LIST_SIZE_O(d, rl) (BOOST_PP_INC(BOOST_PP_TUPLE_ELEM(2, 0, rl)), BOOST_PP_LIST_REST(BOOST_PP_TUPLE_ELEM(2, 1, rl)))
  43 # else
  44 #    define BOOST_PP_LIST_SIZE_O(d, rl) BOOST_PP_LIST_SIZE_O_I(BOOST_PP_TUPLE_REM_2 rl)
  45 #    define BOOST_PP_LIST_SIZE_O_I(im) BOOST_PP_LIST_SIZE_O_II(im)
  46 #    define BOOST_PP_LIST_SIZE_O_II(r, l) (BOOST_PP_INC(r), BOOST_PP_LIST_REST(l))
  47 # endif
  48 #
  49 # /* BOOST_PP_LIST_SIZE_D */
  50 #
  51 # if ~BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_EDG()
  52 #    define BOOST_PP_LIST_SIZE_D(d, list) BOOST_PP_TUPLE_ELEM(2, 0, BOOST_PP_WHILE_ ## d(BOOST_PP_LIST_SIZE_P, BOOST_PP_LIST_SIZE_O, (0, list)))
  53 # else
  54 #    define BOOST_PP_LIST_SIZE_D(d, list) BOOST_PP_LIST_SIZE_D_I(d, list)
  55 #    define BOOST_PP_LIST_SIZE_D_I(d, list) BOOST_PP_TUPLE_ELEM(2, 0, BOOST_PP_WHILE_ ## d(BOOST_PP_LIST_SIZE_P, BOOST_PP_LIST_SIZE_O, (0, list)))
  56 # endif
  57 #
  58 # endif