boost/preprocessor/seq/for_each_i.hpp

   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_FOR_EACH_I_HPP
  13 # define BOOST_PREPROCESSOR_SEQ_FOR_EACH_I_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/control/if.hpp>
  19 # include <boost/preprocessor/control/iif.hpp>
  20 # include <boost/preprocessor/repetition/for.hpp>
  21 # include <boost/preprocessor/seq/seq.hpp>
  22 # include <boost/preprocessor/seq/size.hpp>
  23 # include <boost/preprocessor/seq/detail/is_empty.hpp>
  24 # include <boost/preprocessor/tuple/elem.hpp>
  25 # include <boost/preprocessor/tuple/rem.hpp>
  26 #
  27 # /* BOOST_PP_SEQ_FOR_EACH_I */
  28 #
  29 # if ~BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_EDG()
  30 #    define BOOST_PP_SEQ_FOR_EACH_I(macro, data, seq) BOOST_PP_SEQ_FOR_EACH_I_DETAIL_CHECK(macro, data, seq)
  31 # else
  32 #    define BOOST_PP_SEQ_FOR_EACH_I(macro, data, seq) BOOST_PP_SEQ_FOR_EACH_I_I(macro, data, seq)
  33 #    define BOOST_PP_SEQ_FOR_EACH_I_I(macro, data, seq) BOOST_PP_SEQ_FOR_EACH_I_DETAIL_CHECK(macro, data, seq)
  34 # endif
  35 #
  36 #    define BOOST_PP_SEQ_FOR_EACH_I_DETAIL_CHECK_EXEC(macro, data, seq) BOOST_PP_FOR((macro, data, seq, 0, BOOST_PP_SEQ_SIZE(seq)), BOOST_PP_SEQ_FOR_EACH_I_P, BOOST_PP_SEQ_FOR_EACH_I_O, BOOST_PP_SEQ_FOR_EACH_I_M)
  37 #    define BOOST_PP_SEQ_FOR_EACH_I_DETAIL_CHECK_EMPTY(macro, data, seq)
  38 #
  39 #    define BOOST_PP_SEQ_FOR_EACH_I_DETAIL_CHECK(macro, data, seq) \
  40         BOOST_PP_IIF \
  41             ( \
  42             BOOST_PP_SEQ_DETAIL_IS_NOT_EMPTY(seq), \
  43             BOOST_PP_SEQ_FOR_EACH_I_DETAIL_CHECK_EXEC, \
  44             BOOST_PP_SEQ_FOR_EACH_I_DETAIL_CHECK_EMPTY \
  45             ) \
  46         (macro, data, seq) \
  47 /**/
  48 #
  49 # define BOOST_PP_SEQ_FOR_EACH_I_P(r, x) BOOST_PP_TUPLE_ELEM(5, 4, x)
  50 #
  51 # if BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_STRICT()
  52 #    define BOOST_PP_SEQ_FOR_EACH_I_O(r, x) BOOST_PP_SEQ_FOR_EACH_I_O_I x
  53 # else
  54 #    define BOOST_PP_SEQ_FOR_EACH_I_O(r, x) BOOST_PP_SEQ_FOR_EACH_I_O_I(BOOST_PP_TUPLE_ELEM(5, 0, x), BOOST_PP_TUPLE_ELEM(5, 1, x), BOOST_PP_TUPLE_ELEM(5, 2, x), BOOST_PP_TUPLE_ELEM(5, 3, x), BOOST_PP_TUPLE_ELEM(5, 4, x))
  55 # endif
  56 #
  57 # define BOOST_PP_SEQ_FOR_EACH_I_O_I(macro, data, seq, i, sz) \
  58     BOOST_PP_SEQ_FOR_EACH_I_O_I_DEC(macro, data, seq, i, BOOST_PP_DEC(sz)) \
  59 /**/
  60 # define BOOST_PP_SEQ_FOR_EACH_I_O_I_DEC(macro, data, seq, i, sz) \
  61     ( \
  62     macro, \
  63     data, \
  64     BOOST_PP_IF \
  65         ( \
  66         sz, \
  67         BOOST_PP_SEQ_FOR_EACH_I_O_I_TAIL, \
  68         BOOST_PP_SEQ_FOR_EACH_I_O_I_NIL \
  69         ) \
  70     (seq), \
  71     BOOST_PP_INC(i), \
  72     sz \
  73     ) \
  74 /**/
  75 # define BOOST_PP_SEQ_FOR_EACH_I_O_I_TAIL(seq) BOOST_PP_SEQ_TAIL(seq)
  76 # define BOOST_PP_SEQ_FOR_EACH_I_O_I_NIL(seq) BOOST_PP_NIL
  77 #
  78 # if BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_STRICT()
  79 #    define BOOST_PP_SEQ_FOR_EACH_I_M(r, x) BOOST_PP_SEQ_FOR_EACH_I_M_IM(r, BOOST_PP_TUPLE_REM_5 x)
  80 #    define BOOST_PP_SEQ_FOR_EACH_I_M_IM(r, im) BOOST_PP_SEQ_FOR_EACH_I_M_I(r, im)
  81 # else
  82 #    define BOOST_PP_SEQ_FOR_EACH_I_M(r, x) BOOST_PP_SEQ_FOR_EACH_I_M_I(r, BOOST_PP_TUPLE_ELEM(5, 0, x), BOOST_PP_TUPLE_ELEM(5, 1, x), BOOST_PP_TUPLE_ELEM(5, 2, x), BOOST_PP_TUPLE_ELEM(5, 3, x), BOOST_PP_TUPLE_ELEM(5, 4, x))
  83 # endif
  84 #
  85 # define BOOST_PP_SEQ_FOR_EACH_I_M_I(r, macro, data, seq, i, sz) macro(r, data, i, BOOST_PP_SEQ_HEAD(seq))
  86 #
  87 # /* BOOST_PP_SEQ_FOR_EACH_I_R */
  88 #
  89 # if ~BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_EDG()
  90 #    define BOOST_PP_SEQ_FOR_EACH_I_R(r, macro, data, seq) BOOST_PP_SEQ_FOR_EACH_I_R_DETAIL_CHECK(r, macro, data, seq)
  91 # else
  92 #    define BOOST_PP_SEQ_FOR_EACH_I_R(r, macro, data, seq) BOOST_PP_SEQ_FOR_EACH_I_R_I(r, macro, data, seq)
  93 #    define BOOST_PP_SEQ_FOR_EACH_I_R_I(r, macro, data, seq) BOOST_PP_SEQ_FOR_EACH_I_R_DETAIL_CHECK(r, macro, data, seq)
  94 # endif
  95 #
  96 #    define BOOST_PP_SEQ_FOR_EACH_I_R_DETAIL_CHECK_EXEC(r, macro, data, seq) BOOST_PP_FOR_ ## r((macro, data, seq, 0, BOOST_PP_SEQ_SIZE(seq)), BOOST_PP_SEQ_FOR_EACH_I_P, BOOST_PP_SEQ_FOR_EACH_I_O, BOOST_PP_SEQ_FOR_EACH_I_M)
  97 #    define BOOST_PP_SEQ_FOR_EACH_I_R_DETAIL_CHECK_EMPTY(r, macro, data, seq)
  98 #
  99 #    define BOOST_PP_SEQ_FOR_EACH_I_R_DETAIL_CHECK(r, macro, data, seq) \
 100         BOOST_PP_IIF \
 101             ( \
 102             BOOST_PP_SEQ_DETAIL_IS_NOT_EMPTY(seq), \
 103             BOOST_PP_SEQ_FOR_EACH_I_R_DETAIL_CHECK_EXEC, \
 104             BOOST_PP_SEQ_FOR_EACH_I_R_DETAIL_CHECK_EMPTY \
 105             ) \
 106         (r, macro, data, seq) \
 107 /**/
 108 #
 109 # endif