diff options
| author | Donald Lee <dlqs@gmx.com> | 2021-06-11 17:37:37 +0800 |
|---|---|---|
| committer | Donald Lee <dlqs@gmx.com> | 2021-06-22 04:46:16 +0800 |
| commit | 249cd5daa70e32163fda202d27cfe5839eee0e6d (patch) | |
| tree | dfe441cdb2f7dead83c749846a2b7895ee49db9b /lib/compiler.h | |
| parent | cd551a0fd5430791ce4e650ccca9b312f02b9701 (diff) | |
lib: Add MAP_LIST macro
Signed-off-by: Donald Lee <dlqs@gmx.com>
Diffstat (limited to 'lib/compiler.h')
| -rw-r--r-- | lib/compiler.h | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/lib/compiler.h b/lib/compiler.h index e805eb8be4..155ffc6003 100644 --- a/lib/compiler.h +++ b/lib/compiler.h @@ -173,6 +173,29 @@ extern "C" { #define MACRO_REPEAT(NAME, ...) \ MACRO_VARIANT(_MACRO_REPEAT, ##__VA_ARGS__)(NAME, ##__VA_ARGS__) +/* per-arglist repeat macro, use like this: + * #define SEP_SEMICOLON ; + * #define foo(...) MAP_LISTS(F, SEP_SEMICOLON, ##__VA_ARGS__) + * where F is a n-ary function where n is the number of args in each arglist. + * e.g.: MAP_LISTS(f, SEP_SEMICOLON, (a, b), (c, d, e)) + * expands to: f(a, b); f(c, d, e) + */ + +#define ESC(...) __VA_ARGS__ +#define MAP_LISTS(M, ...) \ + _CONCAT(_MAP_LISTS_, PP_NARG(__VA_ARGS__))(M, ##__VA_ARGS__) +#define _MAP_LISTS_0(M) +#define _MAP_LISTS_1(M, _1) ESC(M _1) +#define _MAP_LISTS_2(M, _1, _2) ESC(M _1; M _2) +#define _MAP_LISTS_3(M, _1, _2, _3) ESC(M _1; M _2; M _3) +#define _MAP_LISTS_4(M, _1, _2, _3, _4) ESC(M _1; M _2; M _3; M _4) +#define _MAP_LISTS_5(M, _1, _2, _3, _4, _5) ESC(M _1; M _2; M _3; M _4; M _5) +#define _MAP_LISTS_6(M, _1, _2, _3, _4, _5, _6) \ + ESC(M _1; M _2; M _3; M _4; M _5; M _6) +#define _MAP_LISTS_7(M, _1, _2, _3, _4, _5, _6, _7) \ + ESC(M _1; M _2; M _3; M _4; M _5; M _6; M _7) +#define _MAP_LISTS_8(M, _1, _2, _3, _4, _5, _6, _7, _8) \ + ESC(M _1; M _2; M _3; M _4; M _5; M _6; M _7; M _8) /* * for warnings on macros, put in the macro content like this: * #define MACRO BLA CPP_WARN("MACRO has been deprecated") |