diff options
Diffstat (limited to 'libmisc/include')
| -rw-r--r-- | libmisc/include/libmisc/macro.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/libmisc/include/libmisc/macro.h b/libmisc/include/libmisc/macro.h index 2531587..48f52e5 100644 --- a/libmisc/include/libmisc/macro.h +++ b/libmisc/include/libmisc/macro.h @@ -170,4 +170,18 @@ /** The same as LM_FOREACH_TUPLE(), but callable from inside of LM_FOREACH_TUPLE(). */ #define LM_FOREACH_TUPLE2(...) _LM_DEFER2(_LM_FOREACH_TUPLE_indirect)()(__VA_ARGS__) +/* CPP: wrap-cc extensions ****************************************************/ + +#ifdef __LIBMISC_ENHANCED_CPP__ +/** + * `LM_DEFAPPEND(macro, val)` is like `#define macro val`, but can (1) + * be used from inside of a macro, and (2) appends to a value if it is + * already defined with LM_DEFAPPEND. There are lots of edge-cases, + * don't get cute. + */ +#define LM_DEFAPPEND(macro, ...) __xx__LM_DEFAPPEND__xx__(#macro, #__VA_ARGS__) LM_FORCE_SEMICOLON +#define LM_DEFAPPEND_(macro, ...) _LM_DEFAPPEND_(#macro, __VA_ARGS__) +#define _LM_DEFAPPEND_(macrostr, ...) __xx__LM_DEFAPPEND__xx__(macrostr, #__VA_ARGS__) LM_FORCE_SEMICOLON +#endif + #endif /* _LIBMISC_MACRO_H_ */ |