diff options
Diffstat (limited to 'source/blender/blenlib/BLI_utildefines.h')
| -rw-r--r-- | source/blender/blenlib/BLI_utildefines.h | 83 |
1 files changed, 53 insertions, 30 deletions
diff --git a/source/blender/blenlib/BLI_utildefines.h b/source/blender/blenlib/BLI_utildefines.h index 2e657a2e4d6..564b31f974a 100644 --- a/source/blender/blenlib/BLI_utildefines.h +++ b/source/blender/blenlib/BLI_utildefines.h @@ -40,6 +40,26 @@ #include <stdio.h> #endif + +/* varargs macros (keep first so others can use) */ +/* --- internal helpers --- */ +#define _VA_NARGS_GLUE(x, y) x y +#define _VA_NARGS_RETURN_COUNT(\ + _1_, _2_, _3_, _4_, _5_, _6_, _7_, _8_, _9_, _10_, _11_, _12_, _13_, _14_, _15_, _16_, \ + _17_, _18_, _19_, _20_, _21_, _22_, _23_, _24_, _25_, _26_, _27_, _28_, _29_, _30_, _31_, _32_, \ + count, ...) count +#define _VA_NARGS_EXPAND(args) _VA_NARGS_RETURN_COUNT args +#define _VA_NARGS_COUNT_MAX16(...) _VA_NARGS_EXPAND((__VA_ARGS__, \ + 32, 31, 30, 29, 28, 27, 26, 25, 24, 23, 22, 21, 20, 19, 18, 17, 16, \ + 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0)) +#define _VA_NARGS_OVERLOAD_MACRO2(name, count) name##count +#define _VA_NARGS_OVERLOAD_MACRO1(name, count) _VA_NARGS_OVERLOAD_MACRO2(name, count) +#define _VA_NARGS_OVERLOAD_MACRO(name, count) _VA_NARGS_OVERLOAD_MACRO1(name, count) +/* --- expose for re-use --- */ +#define VA_NARGS_CALL_OVERLOAD(name, ...) \ + _VA_NARGS_GLUE(_VA_NARGS_OVERLOAD_MACRO(name, _VA_NARGS_COUNT_MAX16(__VA_ARGS__)), (__VA_ARGS__)) + + /* useful for finding bad use of min/max */ #if 0 /* gcc only */ @@ -182,38 +202,41 @@ (b) = (tval); \ } (void)0 - /* ELEM#(v, ...): is the first arg equal any others? */ -#define ELEM(v, a, b) \ +/* internal helpers*/ +#define _VA_ELEM3(v, a, b) \ (((v) == (a)) || ((v) == (b))) -#define ELEM3(v, a, b, c) \ - (ELEM(v, a, b) || ((v) == (c))) -#define ELEM4(v, a, b, c, d) \ - (ELEM3(v, a, b, c) || ((v) == (d))) -#define ELEM5(v, a, b, c, d, e) \ - (ELEM4(v, a, b, c, d) || ((v) == (e))) -#define ELEM6(v, a, b, c, d, e, f) \ - (ELEM5(v, a, b, c, d, e) || ((v) == (f))) -#define ELEM7(v, a, b, c, d, e, f, g) \ - (ELEM6(v, a, b, c, d, e, f) || ((v) == (g))) -#define ELEM8(v, a, b, c, d, e, f, g, h) \ - (ELEM7(v, a, b, c, d, e, f, g) || ((v) == (h))) -#define ELEM9(v, a, b, c, d, e, f, g, h, i) \ - (ELEM8(v, a, b, c, d, e, f, g, h) || ((v) == (i))) -#define ELEM10(v, a, b, c, d, e, f, g, h, i, j) \ - (ELEM9(v, a, b, c, d, e, f, g, h, i) || ((v) == (j))) -#define ELEM11(v, a, b, c, d, e, f, g, h, i, j, k) \ - (ELEM10(v, a, b, c, d, e, f, g, h, i, j) || ((v) == (k))) -#define ELEM12(v, a, b, c, d, e, f, g, h, i, j, k, l) \ - (ELEM11(v, a, b, c, d, e, f, g, h, i, j, k) || ((v) == (l))) -#define ELEM13(v, a, b, c, d, e, f, g, h, i, j, k, l, m) \ - (ELEM12(v, a, b, c, d, e, f, g, h, i, j, k, l) || ((v) == (m))) -#define ELEM14(v, a, b, c, d, e, f, g, h, i, j, k, l, m, n) \ - (ELEM13(v, a, b, c, d, e, f, g, h, i, j, k, l, m) || ((v) == (n))) -#define ELEM15(v, a, b, c, d, e, f, g, h, i, j, k, l, m, n, o) \ - (ELEM14(v, a, b, c, d, e, f, g, h, i, j, k, l, m, n) || ((v) == (o))) -#define ELEM16(v, a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p) \ - (ELEM15(v, a, b, c, d, e, f, g, h, i, j, k, l, m, n, o) || ((v) == (p))) +#define _VA_ELEM4(v, a, b, c) \ + (_VA_ELEM3(v, a, b) || ((v) == (c))) +#define _VA_ELEM5(v, a, b, c, d) \ + (_VA_ELEM4(v, a, b, c) || ((v) == (d))) +#define _VA_ELEM6(v, a, b, c, d, e) \ + (_VA_ELEM5(v, a, b, c, d) || ((v) == (e))) +#define _VA_ELEM7(v, a, b, c, d, e, f) \ + (_VA_ELEM6(v, a, b, c, d, e) || ((v) == (f))) +#define _VA_ELEM8(v, a, b, c, d, e, f, g) \ + (_VA_ELEM7(v, a, b, c, d, e, f) || ((v) == (g))) +#define _VA_ELEM9(v, a, b, c, d, e, f, g, h) \ + (_VA_ELEM8(v, a, b, c, d, e, f, g) || ((v) == (h))) +#define _VA_ELEM10(v, a, b, c, d, e, f, g, h, i) \ + (_VA_ELEM9(v, a, b, c, d, e, f, g, h) || ((v) == (i))) +#define _VA_ELEM11(v, a, b, c, d, e, f, g, h, i, j) \ + (_VA_ELEM10(v, a, b, c, d, e, f, g, h, i) || ((v) == (j))) +#define _VA_ELEM12(v, a, b, c, d, e, f, g, h, i, j, k) \ + (_VA_ELEM11(v, a, b, c, d, e, f, g, h, i, j) || ((v) == (k))) +#define _VA_ELEM13(v, a, b, c, d, e, f, g, h, i, j, k, l) \ + (_VA_ELEM12(v, a, b, c, d, e, f, g, h, i, j, k) || ((v) == (l))) +#define _VA_ELEM14(v, a, b, c, d, e, f, g, h, i, j, k, l, m) \ + (_VA_ELEM13(v, a, b, c, d, e, f, g, h, i, j, k, l) || ((v) == (m))) +#define _VA_ELEM15(v, a, b, c, d, e, f, g, h, i, j, k, l, m, n) \ + (_VA_ELEM14(v, a, b, c, d, e, f, g, h, i, j, k, l, m) || ((v) == (n))) +#define _VA_ELEM16(v, a, b, c, d, e, f, g, h, i, j, k, l, m, n, o) \ + (_VA_ELEM15(v, a, b, c, d, e, f, g, h, i, j, k, l, m, n) || ((v) == (o))) +#define _VA_ELEM17(v, a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p) \ + (_VA_ELEM16(v, a, b, c, d, e, f, g, h, i, j, k, l, m, n, o) || ((v) == (p))) + +/* reusable ELEM macro */ +#define ELEM(...) VA_NARGS_CALL_OVERLOAD(_VA_ELEM, __VA_ARGS__) /* shift around elements */ |