diff --git a/Marlin/src/core/macros.h b/Marlin/src/core/macros.h index edf041f70a..ebcb9ebcfb 100644 --- a/Marlin/src/core/macros.h +++ b/Marlin/src/core/macros.h @@ -480,3 +480,14 @@ #define RREPEAT(N,OP) RREPEAT_S(0,N,OP) #define RREPEAT2_S(S,N,OP,V...) EVAL1024(_RREPEAT2(S,SUB##S(N),OP,V)) #define RREPEAT2(N,OP,V...) RREPEAT2_S(0,N,OP,V) + +// See https://github.com/swansontec/map-macro +#define MAP_OUT +#define MAP_END(...) +#define MAP_GET_END() 0, MAP_END +#define MAP_NEXT0(test, next, ...) next MAP_OUT +#define MAP_NEXT1(test, next) MAP_NEXT0 (test, next, 0) +#define MAP_NEXT(test, next) MAP_NEXT1 (MAP_GET_END test, next) +#define MAP0(f, x, peek, ...) f(x) MAP_NEXT (peek, MAP1) (f, peek, __VA_ARGS__) +#define MAP1(f, x, peek, ...) f(x) MAP_NEXT (peek, MAP0) (f, peek, __VA_ARGS__) +#define MAP(f, ...) EVAL512 (MAP1 (f, __VA_ARGS__, (), 0))