3rdparty/boost/boost/parameter/aux_/preprocessor/for_each.hpp

   1 // Copyright Daniel Wallin 2005. Use, modification and distribution is
   2 // subject to the Boost Software License, Version 1.0. (See accompanying
   3 // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
   4
   5 #ifndef BOOST_PARAMETER_FOR_EACH_051217_HPP
   6 # define BOOST_PARAMETER_FOR_EACH_051217_HPP
   7
   8 # include <boost/preprocessor/cat.hpp>
   9 # include <boost/preprocessor/detail/split.hpp>
  10 # include <boost/preprocessor/logical/not.hpp>
  11 # include <boost/preprocessor/facilities/is_empty.hpp>
  12 # include <boost/preprocessor/tuple/eat.hpp>
  13 # include <boost/preprocessor/arithmetic/inc.hpp>
  14 # include <boost/preprocessor/repeat.hpp>
  15 # include <boost/preprocessor/punctuation/comma_if.hpp>
  16 # include <boost/preprocessor/for.hpp>
  17 # include <boost/preprocessor/repetition/deduce_r.hpp>
  18
  19 # define BOOST_PARAMETER_FOR_EACH_head_aux2(x,y) (x,y), ~
  20 # define BOOST_PARAMETER_FOR_EACH_head_aux3(x,y,z) (x,y,z), ~
  21 # define BOOST_PARAMETER_FOR_EACH_head_aux4(x,y,z,u) (x,y,z,u), ~
  22 # define BOOST_PARAMETER_FOR_EACH_head(n,x) \
  23     BOOST_PP_SPLIT(0, BOOST_PP_CAT(BOOST_PARAMETER_FOR_EACH_head_aux,n) x)
  24
  25 # define BOOST_PARAMETER_FOR_EACH_pred_aux_BOOST_PARAMETER_FOR_EACH_END_SENTINEL
  26 # define BOOST_PARAMETER_FOR_EACH_pred_aux_check(x) \
  27     BOOST_PP_NOT(BOOST_PP_IS_EMPTY( \
  28         BOOST_PP_CAT(BOOST_PARAMETER_FOR_EACH_pred_aux_, x) \
  29     )), ~
  30
  31 # define BOOST_PARAMETER_FOR_EACH_pred_aux2(x,y) \
  32     BOOST_PARAMETER_FOR_EACH_pred_aux_check(x)
  33 # define BOOST_PARAMETER_FOR_EACH_pred_aux3(x,y,z) \
  34     BOOST_PARAMETER_FOR_EACH_pred_aux_check(x)
  35 # define BOOST_PARAMETER_FOR_EACH_pred_aux4(x,y,z,u) \
  36     BOOST_PARAMETER_FOR_EACH_pred_aux_check(x)
  37
  38 # define BOOST_PARAMETER_FOR_EACH_pred_aux0(n,x) \
  39     BOOST_PP_CAT(BOOST_PARAMETER_FOR_EACH_pred_aux,n) x
  40
  41 # if BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_MSVC()
  42 #  define BOOST_PARAMETER_FOR_EACH_pred_SPLIT_FIRST(x) \
  43     BOOST_PP_SPLIT(0, x)
  44
  45 #  define BOOST_PARAMETER_FOR_EACH_pred(r, state) \
  46     BOOST_PARAMETER_FOR_EACH_pred_SPLIT_FIRST( \
  47         BOOST_PARAMETER_FOR_EACH_pred_aux0( \
  48             BOOST_PP_TUPLE_ELEM(5,3,state) \
  49           , BOOST_PP_TUPLE_ELEM(5,0,state) \
  50         ) \
  51     )
  52 # else
  53 #  define BOOST_PARAMETER_FOR_EACH_pred(r, state) \
  54     BOOST_PP_SPLIT( \
  55         0 \
  56       , BOOST_PARAMETER_FOR_EACH_pred_aux0( \
  57             BOOST_PP_TUPLE_ELEM(5,3,state) \
  58           , BOOST_PP_TUPLE_ELEM(5,0,state) \
  59         ) \
  60     )
  61 # endif
  62
  63 # define BOOST_PARAMETER_FOR_EACH_op(r, state) \
  64     ( \
  65         BOOST_PP_TUPLE_EAT(BOOST_PP_TUPLE_ELEM(5,3,state)) \
  66           BOOST_PP_TUPLE_ELEM(5,0,state) \
  67       , BOOST_PP_TUPLE_ELEM(5,1,state) \
  68       , BOOST_PP_TUPLE_ELEM(5,2,state) \
  69       , BOOST_PP_TUPLE_ELEM(5,3,state) \
  70       , BOOST_PP_INC(BOOST_PP_TUPLE_ELEM(5,4,state)) \
  71     )
  72
  73 # define BOOST_PARAMETER_FOR_EACH_macro(r, state) \
  74     BOOST_PP_TUPLE_ELEM(5,2,state)( \
  75         r \
  76       , BOOST_PP_TUPLE_ELEM(5,4,state) \
  77       , BOOST_PARAMETER_FOR_EACH_head( \
  78             BOOST_PP_TUPLE_ELEM(5,3,state) \
  79           , BOOST_PP_TUPLE_ELEM(5,0,state) \
  80         ) \
  81       , BOOST_PP_TUPLE_ELEM(5,1,state) \
  82     )
  83
  84 # define BOOST_PARAMETER_FOR_EACH_build_end_sentinel(z,n,text) \
  85     BOOST_PP_COMMA_IF(n) BOOST_PARAMETER_FOR_EACH_END_SENTINEL
  86 # define BOOST_PARAMETER_FOR_EACH_build_end_sentinel_tuple(arity) \
  87     ( \
  88         BOOST_PP_REPEAT(arity, BOOST_PARAMETER_FOR_EACH_build_end_sentinel, _) \
  89     )
  90
  91 # define BOOST_PARAMETER_FOR_EACH_R(r, arity, list, data, macro) \
  92     BOOST_PP_CAT(BOOST_PP_FOR_, r)( \
  93         (list BOOST_PARAMETER_FOR_EACH_build_end_sentinel_tuple(arity), data, macro, arity, 0) \
  94       , BOOST_PARAMETER_FOR_EACH_pred \
  95       , BOOST_PARAMETER_FOR_EACH_op \
  96       , BOOST_PARAMETER_FOR_EACH_macro \
  97     )
  98
  99 # define BOOST_PARAMETER_FOR_EACH(arity, list, data, macro) \
 100     BOOST_PARAMETER_FOR_EACH_R(BOOST_PP_DEDUCE_R(), arity, list, data, macro)
 101
 102 #endif // BOOST_PARAMETER_FOR_EACH_051217_HPP
 103