ceph/src/boost/libs/vmd/include/boost/vmd/detail/list.hpp

   1
   2 //  (C) Copyright Edward Diener 2011-2015
   3 //  Use, modification and distribution are subject to the Boost Software License,
   4 //  Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
   5 //  http://www.boost.org/LICENSE_1_0.txt).
   6
   7 #if !defined(BOOST_VMD_DETAIL_LIST_HPP)
   8 #define BOOST_VMD_DETAIL_LIST_HPP
   9
  10 #include <boost/preprocessor/control/iif.hpp>
  11 #include <boost/preprocessor/punctuation/is_begin_parens.hpp>
  12 #include <boost/preprocessor/tuple/elem.hpp>
  13 #include <boost/preprocessor/tuple/pop_back.hpp>
  14 #include <boost/preprocessor/variadic/elem.hpp>
  15 #include <boost/vmd/is_empty.hpp>
  16 #include <boost/vmd/detail/empty_result.hpp>
  17 #include <boost/vmd/detail/identifier.hpp>
  18 #include <boost/vmd/detail/is_list.hpp>
  19 #include <boost/vmd/detail/mods.hpp>
  20 #include <boost/vmd/detail/parens.hpp>
  21
  22 #define BOOST_VMD_DETAIL_LIST_CHECK_FOR_LIST(tuple) \
  23     BOOST_PP_IIF \
  24         ( \
  25         BOOST_VMD_DETAIL_IS_LIST \
  26             ( \
  27             BOOST_PP_TUPLE_ELEM \
  28                 ( \
  29                 0, \
  30                 tuple \
  31                 ) \
  32             ), \
  33         tuple, \
  34         (,) \
  35         ) \
  36 /**/
  37
  38 #define BOOST_VMD_DETAIL_LIST_CHECK_FOR_LIST_D(d,tuple) \
  39     BOOST_PP_IIF \
  40         ( \
  41         BOOST_VMD_DETAIL_IS_LIST_D \
  42             ( \
  43             d, \
  44             BOOST_PP_TUPLE_ELEM \
  45                 ( \
  46                 0, \
  47                 tuple \
  48                 ) \
  49             ), \
  50         tuple, \
  51         (,) \
  52         ) \
  53 /**/
  54
  55 #define BOOST_VMD_DETAIL_LIST_CHECK_RETURN(tuple) \
  56     BOOST_PP_IIF \
  57         ( \
  58         BOOST_VMD_IS_EMPTY \
  59             ( \
  60             BOOST_PP_TUPLE_ELEM \
  61                 ( \
  62                 0, \
  63                 tuple \
  64                 ) \
  65             ), \
  66         BOOST_VMD_DETAIL_EMPTY_RESULT, \
  67         BOOST_VMD_DETAIL_LIST_CHECK_FOR_LIST \
  68         ) \
  69     (tuple) \
  70 /**/
  71
  72 #define BOOST_VMD_DETAIL_LIST_CHECK_RETURN_D(d,tuple) \
  73     BOOST_PP_IIF \
  74         ( \
  75         BOOST_VMD_IS_EMPTY \
  76             ( \
  77             BOOST_PP_TUPLE_ELEM \
  78                 ( \
  79                 0, \
  80                 tuple \
  81                 ) \
  82             ), \
  83         BOOST_VMD_DETAIL_EMPTY_RESULT, \
  84         BOOST_VMD_DETAIL_LIST_CHECK_FOR_LIST_D \
  85         ) \
  86     (d,tuple) \
  87 /**/
  88
  89 #define BOOST_VMD_DETAIL_LIST_EMPTY_LIST(list) \
  90     BOOST_VMD_DETAIL_IDENTIFIER(list,BOOST_PP_NIL,BOOST_VMD_RETURN_AFTER,BOOST_VMD_RETURN_INDEX) \
  91 /**/
  92
  93 #define BOOST_VMD_DETAIL_LIST_EMPTY_LIST_D(d,list) \
  94     BOOST_VMD_DETAIL_IDENTIFIER_D(d,list,BOOST_PP_NIL,BOOST_VMD_RETURN_AFTER,BOOST_VMD_RETURN_INDEX) \
  95 /**/
  96
  97 #define BOOST_VMD_DETAIL_LIST_TUPLE(param) \
  98     BOOST_VMD_DETAIL_LIST_CHECK_RETURN \
  99         ( \
 100         BOOST_VMD_DETAIL_PARENS(param,BOOST_VMD_RETURN_AFTER) \
 101         ) \
 102 /**/
 103
 104 #define BOOST_VMD_DETAIL_LIST_TUPLE_D(d,param) \
 105     BOOST_VMD_DETAIL_LIST_CHECK_RETURN_D \
 106         ( \
 107         d, \
 108         BOOST_VMD_DETAIL_PARENS_D(d,param,BOOST_VMD_RETURN_AFTER) \
 109         ) \
 110 /**/
 111
 112 #define BOOST_VMD_DETAIL_LIST_EMPTY_PROCESS(tuple) \
 113     BOOST_PP_IIF \
 114         ( \
 115         BOOST_VMD_IS_EMPTY \
 116             ( \
 117             BOOST_PP_TUPLE_ELEM(0,tuple) \
 118             ), \
 119         (,), \
 120         tuple \
 121         ) \
 122 /**/
 123
 124 #define BOOST_VMD_DETAIL_LIST_EMPTY(list) \
 125     BOOST_VMD_DETAIL_LIST_EMPTY_PROCESS \
 126         ( \
 127         BOOST_VMD_DETAIL_LIST_EMPTY_LIST(list) \
 128         ) \
 129 /**/
 130
 131 #define BOOST_VMD_DETAIL_LIST_EMPTY_D(d,list) \
 132     BOOST_VMD_DETAIL_LIST_EMPTY_PROCESS \
 133         ( \
 134         BOOST_VMD_DETAIL_LIST_EMPTY_LIST_D(d,list) \
 135         ) \
 136 /**/
 137
 138 #define BOOST_VMD_DETAIL_LIST_PROCESS(list) \
 139     BOOST_PP_IIF \
 140         ( \
 141         BOOST_PP_IS_BEGIN_PARENS(list), \
 142         BOOST_VMD_DETAIL_LIST_TUPLE, \
 143         BOOST_VMD_DETAIL_LIST_EMPTY \
 144         ) \
 145     (list) \
 146 /**/
 147
 148 #define BOOST_VMD_DETAIL_LIST_SPLIT(list) \
 149     BOOST_PP_IIF \
 150         ( \
 151         BOOST_VMD_IS_EMPTY(list), \
 152         BOOST_VMD_DETAIL_EMPTY_RESULT, \
 153         BOOST_VMD_DETAIL_LIST_PROCESS \
 154         ) \
 155     (list) \
 156 /**/
 157
 158 #define BOOST_VMD_DETAIL_LIST_BEGIN(list) \
 159     BOOST_PP_TUPLE_ELEM(0,BOOST_VMD_DETAIL_LIST_SPLIT(list)) \
 160 /**/
 161
 162 #define BOOST_VMD_DETAIL_LIST_PROCESS_D(d,list) \
 163     BOOST_PP_IIF \
 164         ( \
 165         BOOST_PP_IS_BEGIN_PARENS(list), \
 166         BOOST_VMD_DETAIL_LIST_TUPLE_D, \
 167         BOOST_VMD_DETAIL_LIST_EMPTY_D \
 168         ) \
 169     (d,list) \
 170 /**/
 171
 172 #define BOOST_VMD_DETAIL_LIST_SPLIT_D(d,list) \
 173     BOOST_PP_IIF \
 174         ( \
 175         BOOST_VMD_IS_EMPTY(list), \
 176         BOOST_VMD_DETAIL_EMPTY_RESULT, \
 177         BOOST_VMD_DETAIL_LIST_PROCESS_D \
 178         ) \
 179     (d,list) \
 180 /**/
 181
 182 #define BOOST_VMD_DETAIL_LIST_BEGIN_D(d,list) \
 183     BOOST_PP_TUPLE_ELEM(0,BOOST_VMD_DETAIL_LIST_SPLIT_D(d,list)) \
 184 /**/
 185
 186 #define BOOST_VMD_DETAIL_LIST_D(d,...) \
 187     BOOST_PP_IIF \
 188         ( \
 189         BOOST_VMD_DETAIL_MODS_IS_RESULT_AFTER \
 190             ( \
 191             BOOST_VMD_DETAIL_NEW_MODS_D(d,BOOST_VMD_ALLOW_AFTER,__VA_ARGS__) \
 192             ), \
 193         BOOST_VMD_DETAIL_LIST_SPLIT_D, \
 194         BOOST_VMD_DETAIL_LIST_BEGIN_D \
 195         ) \
 196     (d,BOOST_PP_VARIADIC_ELEM(0,__VA_ARGS__)) \
 197 /**/
 198
 199 #define BOOST_VMD_DETAIL_LIST(...) \
 200     BOOST_PP_IIF \
 201         ( \
 202         BOOST_VMD_DETAIL_MODS_IS_RESULT_AFTER \
 203             ( \
 204             BOOST_VMD_DETAIL_NEW_MODS(BOOST_VMD_ALLOW_AFTER,__VA_ARGS__) \
 205             ), \
 206         BOOST_VMD_DETAIL_LIST_SPLIT, \
 207         BOOST_VMD_DETAIL_LIST_BEGIN \
 208         ) \
 209     (BOOST_PP_VARIADIC_ELEM(0,__VA_ARGS__)) \
 210 /**/
 211
 212 #endif /* BOOST_VMD_DETAIL_LIST_HPP */