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🧑‍💻 MAP macro for axis lists, etc. (#24191)

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This commit is contained in:
Scott Lahteine
2022-05-22 16:08:29 -05:00
committed by GitHub
parent c16ae2451d
commit c5126de559
12 changed files with 67 additions and 95 deletions
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29
Marlin/src/core/macros.h
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@@ -712,13 +712,22 @@
#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))
// Call OP(A) with each item as an argument
#define _MAP(_MAP_OP,A,V...) \
_MAP_OP(A) \
IF_ELSE(HAS_ARGS(V)) \
( DEFER2(__MAP)()(_MAP_OP,V) ) \
( /* Do nothing */ )
#define __MAP() _MAP
#define MAP(OP,V...) EVAL(_MAP(OP,V))
// Emit a list of OP(A) with the given items
#define _MAPLIST(_MAP_OP,A,V...) \
_MAP_OP(A) \
IF_ELSE(HAS_ARGS(V)) \
( , DEFER2(__MAPLIST)()(_MAP_OP,V) ) \
( /* Do nothing */ )
#define __MAPLIST() _MAPLIST
#define MAPLIST(OP,V...) EVAL(_MAPLIST(OP,V))