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sys: util: Update implementation of loop macros

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Recursive macros are more generic but they are very depending for
preprocessor. When they are used extensively they can prolong
compilation even ten times. Replaced them with brute force
implementation for:
- FOR_EACH macros
- GET_N_ARG
- GET_ARGS_LESS_N
- UTIL_LISTIFY
- UTIL_REPEAT

New implementation provides same functionality but it is limited to 64
input arguments. This is not a hard limitation and can be increased
in the future.

Signed-off-by: Krzysztof Chruscinski <krzysztof.chruscinski@nordicsemi.no>
This commit is contained in:
Krzysztof Chruscinski 2021-02-17 11:33:49 +01:00 • committed by Anas Nashif
commit 71cdcb7756
3 changed files with 2127 additions and 664 deletions
Download patch file Download diff file Expand all files Collapse all files

654
include/sys/util_internal.h
View file

@ -15,6 +15,8 @@
#ifndef ZEPHYR_INCLUDE_SYS_UTIL_INTERNAL_H_
#define ZEPHYR_INCLUDE_SYS_UTIL_INTERNAL_H_
#include "util_loops.h"
/* IS_ENABLED() helpers */
/* This is called from IS_ENABLED(), and sticks on a "_XXXX" prefix,
@ -79,567 +81,8 @@
#define Z_LIST_NO_EMPTIES(e) \
COND_CODE_1(IS_EMPTY(e), (), (Z_LIST_ADD_ELEM(e)))
/*
* Macros for doing code-generation with the preprocessor as if we
* could do recursive macro expansion.
*
* Generally it is better to generate code with the preprocessor than
* to copy-paste code or to generate code with the build system /
* python script's etc.
*
* http://stackoverflow.com/a/12540675
*/
#define UTIL_EMPTY(...)
#define UTIL_DEFER(...) __VA_ARGS__ UTIL_EMPTY()
#define UTIL_OBSTRUCT(...) __VA_ARGS__ UTIL_DEFER(UTIL_EMPTY)()
#define UTIL_EXPAND(...) __VA_ARGS__
#define UTIL_EVAL(...) UTIL_EVAL1(UTIL_EVAL1(UTIL_EVAL1(__VA_ARGS__)))
#define UTIL_EVAL1(...) UTIL_EVAL2(UTIL_EVAL2(UTIL_EVAL2(__VA_ARGS__)))
#define UTIL_EVAL2(...) UTIL_EVAL3(UTIL_EVAL3(UTIL_EVAL3(__VA_ARGS__)))
#define UTIL_EVAL3(...) UTIL_EVAL4(UTIL_EVAL4(UTIL_EVAL4(__VA_ARGS__)))
#define UTIL_EVAL4(...) UTIL_EVAL5(UTIL_EVAL5(UTIL_EVAL5(__VA_ARGS__)))
#define UTIL_EVAL5(...) __VA_ARGS__
#define UTIL_CAT(a, ...) UTIL_PRIMITIVE_CAT(a, __VA_ARGS__)
#define UTIL_PRIMITIVE_CAT(a, ...) a##__VA_ARGS__
/*
* UTIL_INC(x) for an integer literal x from 0 to 255 expands to an
* integer literal whose value is x+1.
*
* Similarly, UTIL_DEC(x) is (x-1) as an integer literal.
*/
#define UTIL_INC(x) UTIL_PRIMITIVE_CAT(UTIL_INC_, x)
#define UTIL_DEC(x) UTIL_PRIMITIVE_CAT(UTIL_DEC_, x)
#define UTIL_INC_0 1
#define UTIL_INC_1 2
#define UTIL_INC_2 3
#define UTIL_INC_3 4
#define UTIL_INC_4 5
#define UTIL_INC_5 6
#define UTIL_INC_6 7
#define UTIL_INC_7 8
#define UTIL_INC_8 9
#define UTIL_INC_9 10
#define UTIL_INC_10 11
#define UTIL_INC_11 12
#define UTIL_INC_12 13
#define UTIL_INC_13 14
#define UTIL_INC_14 15
#define UTIL_INC_15 16
#define UTIL_INC_16 17
#define UTIL_INC_17 18
#define UTIL_INC_18 19
#define UTIL_INC_19 20
#define UTIL_INC_20 21
#define UTIL_INC_21 22
#define UTIL_INC_22 23
#define UTIL_INC_23 24
#define UTIL_INC_24 25
#define UTIL_INC_25 26
#define UTIL_INC_26 27
#define UTIL_INC_27 28
#define UTIL_INC_28 29
#define UTIL_INC_29 30
#define UTIL_INC_30 31
#define UTIL_INC_31 32
#define UTIL_INC_32 33
#define UTIL_INC_33 34
#define UTIL_INC_34 35
#define UTIL_INC_35 36
#define UTIL_INC_36 37
#define UTIL_INC_37 38
#define UTIL_INC_38 39
#define UTIL_INC_39 40
#define UTIL_INC_40 41
#define UTIL_INC_41 42
#define UTIL_INC_42 43
#define UTIL_INC_43 44
#define UTIL_INC_44 45
#define UTIL_INC_45 46
#define UTIL_INC_46 47
#define UTIL_INC_47 48
#define UTIL_INC_48 49
#define UTIL_INC_49 50
#define UTIL_INC_50 51
#define UTIL_INC_51 52
#define UTIL_INC_52 53
#define UTIL_INC_53 54
#define UTIL_INC_54 55
#define UTIL_INC_55 56
#define UTIL_INC_56 57
#define UTIL_INC_57 58
#define UTIL_INC_58 59
#define UTIL_INC_59 60
#define UTIL_INC_50 51
#define UTIL_INC_51 52
#define UTIL_INC_52 53
#define UTIL_INC_53 54
#define UTIL_INC_54 55
#define UTIL_INC_55 56
#define UTIL_INC_56 57
#define UTIL_INC_57 58
#define UTIL_INC_58 59
#define UTIL_INC_59 60
#define UTIL_INC_60 61
#define UTIL_INC_61 62
#define UTIL_INC_62 63
#define UTIL_INC_63 64
#define UTIL_INC_64 65
#define UTIL_INC_65 66
#define UTIL_INC_66 67
#define UTIL_INC_67 68
#define UTIL_INC_68 69
#define UTIL_INC_69 70
#define UTIL_INC_70 71
#define UTIL_INC_71 72
#define UTIL_INC_72 73
#define UTIL_INC_73 74
#define UTIL_INC_74 75
#define UTIL_INC_75 76
#define UTIL_INC_76 77
#define UTIL_INC_77 78
#define UTIL_INC_78 79
#define UTIL_INC_79 80
#define UTIL_INC_80 81
#define UTIL_INC_81 82
#define UTIL_INC_82 83
#define UTIL_INC_83 84
#define UTIL_INC_84 85
#define UTIL_INC_85 86
#define UTIL_INC_86 87
#define UTIL_INC_87 88
#define UTIL_INC_88 89
#define UTIL_INC_89 90
#define UTIL_INC_90 91
#define UTIL_INC_91 92
#define UTIL_INC_92 93
#define UTIL_INC_93 94
#define UTIL_INC_94 95
#define UTIL_INC_95 96
#define UTIL_INC_96 97
#define UTIL_INC_97 98
#define UTIL_INC_98 99
#define UTIL_INC_99 100
#define UTIL_INC_100 101
#define UTIL_INC_101 102
#define UTIL_INC_102 103
#define UTIL_INC_103 104
#define UTIL_INC_104 105
#define UTIL_INC_105 106
#define UTIL_INC_106 107
#define UTIL_INC_107 108
#define UTIL_INC_108 109
#define UTIL_INC_109 110
#define UTIL_INC_110 111
#define UTIL_INC_111 112
#define UTIL_INC_112 113
#define UTIL_INC_113 114
#define UTIL_INC_114 115
#define UTIL_INC_115 116
#define UTIL_INC_116 117
#define UTIL_INC_117 118
#define UTIL_INC_118 119
#define UTIL_INC_119 120
#define UTIL_INC_120 121
#define UTIL_INC_121 122
#define UTIL_INC_122 123
#define UTIL_INC_123 124
#define UTIL_INC_124 125
#define UTIL_INC_125 126
#define UTIL_INC_126 127
#define UTIL_INC_127 128
#define UTIL_INC_128 129
#define UTIL_INC_129 130
#define UTIL_INC_130 131
#define UTIL_INC_131 132
#define UTIL_INC_132 133
#define UTIL_INC_133 134
#define UTIL_INC_134 135
#define UTIL_INC_135 136
#define UTIL_INC_136 137
#define UTIL_INC_137 138
#define UTIL_INC_138 139
#define UTIL_INC_139 140
#define UTIL_INC_140 141
#define UTIL_INC_141 142
#define UTIL_INC_142 143
#define UTIL_INC_143 144
#define UTIL_INC_144 145
#define UTIL_INC_145 146
#define UTIL_INC_146 147
#define UTIL_INC_147 148
#define UTIL_INC_148 149
#define UTIL_INC_149 150
#define UTIL_INC_150 151
#define UTIL_INC_151 152
#define UTIL_INC_152 153
#define UTIL_INC_153 154
#define UTIL_INC_154 155
#define UTIL_INC_155 156
#define UTIL_INC_156 157
#define UTIL_INC_157 158
#define UTIL_INC_158 159
#define UTIL_INC_159 160
#define UTIL_INC_160 161
#define UTIL_INC_161 162
#define UTIL_INC_162 163
#define UTIL_INC_163 164
#define UTIL_INC_164 165
#define UTIL_INC_165 166
#define UTIL_INC_166 167
#define UTIL_INC_167 168
#define UTIL_INC_168 169
#define UTIL_INC_169 170
#define UTIL_INC_170 171
#define UTIL_INC_171 172
#define UTIL_INC_172 173
#define UTIL_INC_173 174
#define UTIL_INC_174 175
#define UTIL_INC_175 176
#define UTIL_INC_176 177
#define UTIL_INC_177 178
#define UTIL_INC_178 179
#define UTIL_INC_179 180
#define UTIL_INC_180 181
#define UTIL_INC_181 182
#define UTIL_INC_182 183
#define UTIL_INC_183 184
#define UTIL_INC_184 185
#define UTIL_INC_185 186
#define UTIL_INC_186 187
#define UTIL_INC_187 188
#define UTIL_INC_188 189
#define UTIL_INC_189 190
#define UTIL_INC_190 191
#define UTIL_INC_191 192
#define UTIL_INC_192 193
#define UTIL_INC_193 194
#define UTIL_INC_194 195
#define UTIL_INC_195 196
#define UTIL_INC_196 197
#define UTIL_INC_197 198
#define UTIL_INC_198 199
#define UTIL_INC_199 200
#define UTIL_INC_200 201
#define UTIL_INC_201 202
#define UTIL_INC_202 203
#define UTIL_INC_203 204
#define UTIL_INC_204 205
#define UTIL_INC_205 206
#define UTIL_INC_206 207
#define UTIL_INC_207 208
#define UTIL_INC_208 209
#define UTIL_INC_209 210
#define UTIL_INC_210 211
#define UTIL_INC_211 212
#define UTIL_INC_212 213
#define UTIL_INC_213 214
#define UTIL_INC_214 215
#define UTIL_INC_215 216
#define UTIL_INC_216 217
#define UTIL_INC_217 218
#define UTIL_INC_218 219
#define UTIL_INC_219 220
#define UTIL_INC_220 221
#define UTIL_INC_221 222
#define UTIL_INC_222 223
#define UTIL_INC_223 224
#define UTIL_INC_224 225
#define UTIL_INC_225 226
#define UTIL_INC_226 227
#define UTIL_INC_227 228
#define UTIL_INC_228 229
#define UTIL_INC_229 230
#define UTIL_INC_230 231
#define UTIL_INC_231 232
#define UTIL_INC_232 233
#define UTIL_INC_233 234
#define UTIL_INC_234 235
#define UTIL_INC_235 236
#define UTIL_INC_236 237
#define UTIL_INC_237 238
#define UTIL_INC_238 239
#define UTIL_INC_239 240
#define UTIL_INC_240 241
#define UTIL_INC_241 242
#define UTIL_INC_242 243
#define UTIL_INC_243 244
#define UTIL_INC_244 245
#define UTIL_INC_245 246
#define UTIL_INC_246 247
#define UTIL_INC_247 248
#define UTIL_INC_248 249
#define UTIL_INC_249 250
#define UTIL_INC_250 251
#define UTIL_INC_251 252
#define UTIL_INC_252 253
#define UTIL_INC_253 254
#define UTIL_INC_254 255
#define UTIL_INC_255 256
#define UTIL_INC_256 257
#define UTIL_DEC_0 0
#define UTIL_DEC_1 0
#define UTIL_DEC_2 1
#define UTIL_DEC_3 2
#define UTIL_DEC_4 3
#define UTIL_DEC_5 4
#define UTIL_DEC_6 5
#define UTIL_DEC_7 6
#define UTIL_DEC_8 7
#define UTIL_DEC_9 8
#define UTIL_DEC_10 9
#define UTIL_DEC_11 10
#define UTIL_DEC_12 11
#define UTIL_DEC_13 12
#define UTIL_DEC_14 13
#define UTIL_DEC_15 14
#define UTIL_DEC_16 15
#define UTIL_DEC_17 16
#define UTIL_DEC_18 17
#define UTIL_DEC_19 18
#define UTIL_DEC_20 19
#define UTIL_DEC_21 20
#define UTIL_DEC_22 21
#define UTIL_DEC_23 22
#define UTIL_DEC_24 23
#define UTIL_DEC_25 24
#define UTIL_DEC_26 25
#define UTIL_DEC_27 26
#define UTIL_DEC_28 27
#define UTIL_DEC_29 28
#define UTIL_DEC_30 29
#define UTIL_DEC_31 30
#define UTIL_DEC_32 31
#define UTIL_DEC_33 32
#define UTIL_DEC_34 33
#define UTIL_DEC_35 34
#define UTIL_DEC_36 35
#define UTIL_DEC_37 36
#define UTIL_DEC_38 37
#define UTIL_DEC_39 38
#define UTIL_DEC_40 39
#define UTIL_DEC_41 40
#define UTIL_DEC_42 41
#define UTIL_DEC_43 42
#define UTIL_DEC_44 43
#define UTIL_DEC_45 44
#define UTIL_DEC_46 45
#define UTIL_DEC_47 46
#define UTIL_DEC_48 47
#define UTIL_DEC_49 48
#define UTIL_DEC_50 49
#define UTIL_DEC_51 50
#define UTIL_DEC_52 51
#define UTIL_DEC_53 52
#define UTIL_DEC_54 53
#define UTIL_DEC_55 54
#define UTIL_DEC_56 55
#define UTIL_DEC_57 56
#define UTIL_DEC_58 57
#define UTIL_DEC_59 58
#define UTIL_DEC_60 59
#define UTIL_DEC_61 60
#define UTIL_DEC_62 61
#define UTIL_DEC_63 62
#define UTIL_DEC_64 63
#define UTIL_DEC_65 64
#define UTIL_DEC_66 65
#define UTIL_DEC_67 66
#define UTIL_DEC_68 67
#define UTIL_DEC_69 68
#define UTIL_DEC_70 69
#define UTIL_DEC_71 70
#define UTIL_DEC_72 71
#define UTIL_DEC_73 72
#define UTIL_DEC_74 73
#define UTIL_DEC_75 74
#define UTIL_DEC_76 75
#define UTIL_DEC_77 76
#define UTIL_DEC_78 77
#define UTIL_DEC_79 78
#define UTIL_DEC_80 79
#define UTIL_DEC_81 80
#define UTIL_DEC_82 81
#define UTIL_DEC_83 82
#define UTIL_DEC_84 83
#define UTIL_DEC_85 84
#define UTIL_DEC_86 85
#define UTIL_DEC_87 86
#define UTIL_DEC_88 87
#define UTIL_DEC_89 88
#define UTIL_DEC_90 89
#define UTIL_DEC_91 90
#define UTIL_DEC_92 91
#define UTIL_DEC_93 92
#define UTIL_DEC_94 93
#define UTIL_DEC_95 94
#define UTIL_DEC_96 95
#define UTIL_DEC_97 96
#define UTIL_DEC_98 97
#define UTIL_DEC_99 98
#define UTIL_DEC_100 99
#define UTIL_DEC_101 100
#define UTIL_DEC_102 101
#define UTIL_DEC_103 102
#define UTIL_DEC_104 103
#define UTIL_DEC_105 104
#define UTIL_DEC_106 105
#define UTIL_DEC_107 106
#define UTIL_DEC_108 107
#define UTIL_DEC_109 108
#define UTIL_DEC_110 109
#define UTIL_DEC_111 110
#define UTIL_DEC_112 111
#define UTIL_DEC_113 112
#define UTIL_DEC_114 113
#define UTIL_DEC_115 114
#define UTIL_DEC_116 115
#define UTIL_DEC_117 116
#define UTIL_DEC_118 117
#define UTIL_DEC_119 118
#define UTIL_DEC_120 119
#define UTIL_DEC_121 120
#define UTIL_DEC_122 121
#define UTIL_DEC_123 122
#define UTIL_DEC_124 123
#define UTIL_DEC_125 124
#define UTIL_DEC_126 125
#define UTIL_DEC_127 126
#define UTIL_DEC_128 127
#define UTIL_DEC_129 128
#define UTIL_DEC_130 129
#define UTIL_DEC_131 130
#define UTIL_DEC_132 131
#define UTIL_DEC_133 132
#define UTIL_DEC_134 133
#define UTIL_DEC_135 134
#define UTIL_DEC_136 135
#define UTIL_DEC_137 136
#define UTIL_DEC_138 137
#define UTIL_DEC_139 138
#define UTIL_DEC_140 139
#define UTIL_DEC_141 140
#define UTIL_DEC_142 141
#define UTIL_DEC_143 142
#define UTIL_DEC_144 143
#define UTIL_DEC_145 144
#define UTIL_DEC_146 145
#define UTIL_DEC_147 146
#define UTIL_DEC_148 147
#define UTIL_DEC_149 148
#define UTIL_DEC_150 149
#define UTIL_DEC_151 150
#define UTIL_DEC_152 151
#define UTIL_DEC_153 152
#define UTIL_DEC_154 153
#define UTIL_DEC_155 154
#define UTIL_DEC_156 155
#define UTIL_DEC_157 156
#define UTIL_DEC_158 157
#define UTIL_DEC_159 158
#define UTIL_DEC_160 159
#define UTIL_DEC_161 160
#define UTIL_DEC_162 161
#define UTIL_DEC_163 162
#define UTIL_DEC_164 163
#define UTIL_DEC_165 164
#define UTIL_DEC_166 165
#define UTIL_DEC_167 166
#define UTIL_DEC_168 167
#define UTIL_DEC_169 168
#define UTIL_DEC_170 169
#define UTIL_DEC_171 170
#define UTIL_DEC_172 171
#define UTIL_DEC_173 172
#define UTIL_DEC_174 173
#define UTIL_DEC_175 174
#define UTIL_DEC_176 175
#define UTIL_DEC_177 176
#define UTIL_DEC_178 177
#define UTIL_DEC_179 178
#define UTIL_DEC_180 179
#define UTIL_DEC_181 180
#define UTIL_DEC_182 181
#define UTIL_DEC_183 182
#define UTIL_DEC_184 183
#define UTIL_DEC_185 184
#define UTIL_DEC_186 185
#define UTIL_DEC_187 186
#define UTIL_DEC_188 187
#define UTIL_DEC_189 188
#define UTIL_DEC_190 189
#define UTIL_DEC_191 190
#define UTIL_DEC_192 191
#define UTIL_DEC_193 192
#define UTIL_DEC_194 193
#define UTIL_DEC_195 194
#define UTIL_DEC_196 195
#define UTIL_DEC_197 196
#define UTIL_DEC_198 197
#define UTIL_DEC_199 198
#define UTIL_DEC_200 199
#define UTIL_DEC_201 200
#define UTIL_DEC_202 201
#define UTIL_DEC_203 202
#define UTIL_DEC_204 203
#define UTIL_DEC_205 204
#define UTIL_DEC_206 205
#define UTIL_DEC_207 206
#define UTIL_DEC_208 207
#define UTIL_DEC_209 208
#define UTIL_DEC_210 209
#define UTIL_DEC_211 210
#define UTIL_DEC_212 211
#define UTIL_DEC_213 212
#define UTIL_DEC_214 213
#define UTIL_DEC_215 214
#define UTIL_DEC_216 215
#define UTIL_DEC_217 216
#define UTIL_DEC_218 217
#define UTIL_DEC_219 218
#define UTIL_DEC_220 219
#define UTIL_DEC_221 220
#define UTIL_DEC_222 221
#define UTIL_DEC_223 222
#define UTIL_DEC_224 223
#define UTIL_DEC_225 224
#define UTIL_DEC_226 225
#define UTIL_DEC_227 226
#define UTIL_DEC_228 227
#define UTIL_DEC_229 228
#define UTIL_DEC_230 229
#define UTIL_DEC_231 230
#define UTIL_DEC_232 231
#define UTIL_DEC_233 232
#define UTIL_DEC_234 233
#define UTIL_DEC_235 234
#define UTIL_DEC_236 235
#define UTIL_DEC_237 236
#define UTIL_DEC_238 237
#define UTIL_DEC_239 238
#define UTIL_DEC_240 239
#define UTIL_DEC_241 240
#define UTIL_DEC_242 241
#define UTIL_DEC_243 242
#define UTIL_DEC_244 243
#define UTIL_DEC_245 244
#define UTIL_DEC_246 245
#define UTIL_DEC_247 246
#define UTIL_DEC_248 247
#define UTIL_DEC_249 248
#define UTIL_DEC_250 249
#define UTIL_DEC_251 250
#define UTIL_DEC_252 251
#define UTIL_DEC_253 252
#define UTIL_DEC_254 253
#define UTIL_DEC_255 254
#define UTIL_DEC_256 255
#define UTIL_CHECK_N(x, n, ...) n
#define UTIL_CHECK(...) UTIL_CHECK_N(__VA_ARGS__, 0,)
#define UTIL_NOT(x) UTIL_CHECK(UTIL_PRIMITIVE_CAT(UTIL_NOT_, x))
@ -648,97 +91,10 @@
#define UTIL_COMPL_0 1
#define UTIL_COMPL_1 0
#define UTIL_BOOL(x) UTIL_COMPL(UTIL_NOT(x))
#define UTIL_IIF(c) UTIL_PRIMITIVE_CAT(UTIL_IIF_, c)
#define UTIL_IIF_0(t, ...) __VA_ARGS__
#define UTIL_IIF_1(t, ...) t
#define UTIL_IF(c) UTIL_IIF(UTIL_BOOL(c))
#define UTIL_EAT(...)
#define UTIL_WHEN(c) UTIL_IF(c)(UTIL_EXPAND, UTIL_EAT)
#define UTIL_REPEAT(count, macro, ...) \
UTIL_WHEN(count) \
( \
UTIL_OBSTRUCT(UTIL_REPEAT_INDIRECT) () \
( \
UTIL_DEC(count), macro, __VA_ARGS__ \
) \
UTIL_OBSTRUCT(macro) \
( \
UTIL_DEC(count), __VA_ARGS__ \
) \
)
#define UTIL_REPEAT_INDIRECT() UTIL_REPEAT
/* Internal macros used by FOR_EACH, FOR_EACH_IDX, etc. */
#define Z_FOR_EACH_IDX(count, n, macro, sep, fixed_arg0, fixed_arg1, ...)\
UTIL_WHEN(count) \
( \
UTIL_OBSTRUCT(macro) \
( \
fixed_arg0, fixed_arg1, n, Z_GET_ARG1(__VA_ARGS__)\
) COND_CODE_1(count, (), (__DEBRACKET sep)) \
UTIL_OBSTRUCT(Z_FOR_EACH_IDX_INDIRECT) () \
( \
UTIL_DEC(count), UTIL_INC(n), macro, sep, \
fixed_arg0, fixed_arg1, \
Z_GET_ARGS_LESS_1(__VA_ARGS__) \
) \
)
#define Z_GET_ARG1(arg1, ...) arg1
#define Z_GET_ARGS_LESS_1(arg1, ...) __VA_ARGS__
#define Z_FOR_EACH_IDX_INDIRECT() Z_FOR_EACH_IDX
#define Z_FOR_EACH_IDX2(count, iter, macro, sc, fixed_arg0, fixed_arg1, ...) \
UTIL_EVAL(Z_FOR_EACH_IDX(count, iter, macro, sc,\
fixed_arg0, fixed_arg1, __VA_ARGS__))
#define Z_FOR_EACH_SWALLOW_NOTHING(F, fixed_arg, index, arg) \
F(index, arg, fixed_arg)
#define Z_FOR_EACH_SWALLOW_FIXED_ARG(F, fixed_arg, index, arg) F(index, arg)
#define Z_FOR_EACH_SWALLOW_INDEX_FIXED_ARG(F, fixed_arg, index, arg) F(arg)
#define Z_FOR_EACH_SWALLOW_INDEX(F, fixed_arg, index, arg) F(arg, fixed_arg)
/* This is a workaround to enable mixing GET_ARG_N with FOR_EACH macros. If
* same UTIL_EVAL macro is used then macro is incorrectly resolved.
*/
#define Z_GET_ARG_N_EVAL(...) \
Z_GET_ARG_N_EVAL1(Z_GET_ARG_N_EVAL1(Z_GET_ARG_N_EVAL1(__VA_ARGS__)))
#define Z_GET_ARG_N_EVAL1(...) \
Z_GET_ARG_N_EVAL2(Z_GET_ARG_N_EVAL2(Z_GET_ARG_N_EVAL2(__VA_ARGS__)))
#define Z_GET_ARG_N_EVAL2(...) \
Z_GET_ARG_N_EVAL3(Z_GET_ARG_N_EVAL3(Z_GET_ARG_N_EVAL3(__VA_ARGS__)))
#define Z_GET_ARG_N_EVAL3(...) \
Z_GET_ARG_N_EVAL4(Z_GET_ARG_N_EVAL4(Z_GET_ARG_N_EVAL4(__VA_ARGS__)))
#define Z_GET_ARG_N_EVAL4(...) \
Z_GET_ARG_N_EVAL5(Z_GET_ARG_N_EVAL5(Z_GET_ARG_N_EVAL5(__VA_ARGS__)))
#define Z_GET_ARG_N_EVAL5(...) __VA_ARGS__
/* Set of internal macros used for GET_ARG_N of macros. */
#define Z_GET_ARG_N(count, single_arg, ...) \
UTIL_WHEN(count) \
( \
IF_ENABLED(count, (UTIL_OBSTRUCT(__DEBRACKET) \
( \
COND_CODE_1(single_arg, \
(Z_GET_ARG1(__VA_ARGS__)), (__VA_ARGS__))\
))) \
UTIL_OBSTRUCT(Z_GET_ARG_N_INDIRECT) () \
( \
UTIL_DEC(count), single_arg, \
Z_GET_ARGS_LESS_1(__VA_ARGS__) \
) \
)
#define Z_GET_ARG_N_INDIRECT() Z_GET_ARG_N
#define _Z_GET_ARG_N(N, single_arg, ...) \
Z_GET_ARG_N_EVAL(Z_GET_ARG_N(N, single_arg, __VA_ARGS__))
#define UTIL_EVAL(...) __VA_ARGS__
#define UTIL_EXPAND(...) __VA_ARGS__
#define UTIL_REPEAT(...) UTIL_LISTIFY(__VA_ARGS__)
/* Implementation details for NUM_VA_ARGS_LESS_1 */
#define NUM_VA_ARGS_LESS_1_IMPL( \

2108
include/sys/util_loops.h Normal file
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29
include/sys/util_macro.h
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@ -265,7 +265,7 @@ extern "C" {
*
* @return Nth argument.
*/
#define GET_ARG_N(N, ...) _Z_GET_ARG_N(N, 1, __VA_ARGS__)
#define GET_ARG_N(N, ...) Z_GET_ARG_##N(__VA_ARGS__)
/**
* @brief Strips n first arguments from the argument list.
@ -275,7 +275,7 @@ extern "C" {
*
* @return argument list without N first arguments.
*/
#define GET_ARGS_LESS_N(N, ...) _Z_GET_ARG_N(UTIL_INC(N), 0, __VA_ARGS__)
#define GET_ARGS_LESS_N(N, ...) Z_GET_ARGS_LESS_##N(__VA_ARGS__)
/** Expands to the first argument.
*
@ -344,7 +344,7 @@ extern "C" {
* @note Calling UTIL_LISTIFY with undefined arguments has undefined
* behavior.
*/
#define UTIL_LISTIFY(LEN, F, ...) UTIL_EVAL(UTIL_REPEAT(LEN, F, __VA_ARGS__))
#define UTIL_LISTIFY(LEN, F, ...) UTIL_CAT(Z_UTIL_LISTIFY_, LEN)(F, __VA_ARGS__)
/**
* @brief Call a macro @p F on each provided argument with a given
@ -368,9 +368,7 @@ extern "C" {
* <tt>F(element)</tt> for each element in the list.
*/
#define FOR_EACH(F, sep, ...) \
Z_FOR_EACH_IDX2(NUM_VA_ARGS_LESS_1(__VA_ARGS__, _), \
0, Z_FOR_EACH_SWALLOW_INDEX_FIXED_ARG, sep, \
F, 0, __VA_ARGS__)
Z_FOR_EACH(F, sep, REVERSE_ARGS(__VA_ARGS__))
/**
* @brief Like FOR_EACH(), but with a terminator instead of a separator,
@ -462,9 +460,7 @@ extern "C" {
* <tt>F(index, element)</tt> for each element in the list.
*/
#define FOR_EACH_IDX(F, sep, ...) \
Z_FOR_EACH_IDX2(NUM_VA_ARGS_LESS_1(__VA_ARGS__, _), \
0, Z_FOR_EACH_SWALLOW_FIXED_ARG, sep, \
F, 0, __VA_ARGS__)
Z_FOR_EACH_IDX(F, sep, REVERSE_ARGS(__VA_ARGS__))
/**
* @brief Call macro @p F on each provided argument, with an additional fixed
@ -492,9 +488,7 @@ extern "C" {
* <tt>F(element, fixed_arg)</tt> for each element in the list.
*/
#define FOR_EACH_FIXED_ARG(F, sep, fixed_arg, ...) \
Z_FOR_EACH_IDX2(NUM_VA_ARGS_LESS_1(__VA_ARGS__, _), \
0, Z_FOR_EACH_SWALLOW_INDEX, sep, \
F, fixed_arg, __VA_ARGS__)
Z_FOR_EACH_FIXED_ARG(F, sep, fixed_arg, REVERSE_ARGS(__VA_ARGS__))
/**
* @brief Calls macro @p F for each variable argument with an index and fixed
@ -522,9 +516,14 @@ extern "C" {
* the list.
*/
#define FOR_EACH_IDX_FIXED_ARG(F, sep, fixed_arg, ...) \
Z_FOR_EACH_IDX2(NUM_VA_ARGS_LESS_1(__VA_ARGS__, _), \
0, Z_FOR_EACH_SWALLOW_NOTHING, sep, \
F, fixed_arg, __VA_ARGS__)
Z_FOR_EACH_IDX_FIXED_ARG(F, sep, fixed_arg, REVERSE_ARGS(__VA_ARGS__))
/** @brief Reverse arguments order.
*
* @param ... Variable argument list.
*/
#define REVERSE_ARGS(...) \
Z_FOR_EACH_ENGINE(Z_FOR_EACH_EXEC, (,), Z_BYPASS, _, __VA_ARGS__)
/**
* @brief Number of arguments in the variable arguments list minus one.