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BLI_string: Add STR_ELEM macro

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A string comparison version of the ELEM macro,
add to avoid verbose & repetitive strcmp/STREQ usage.
This commit is contained in:
Campbell Barton
2019-04-10 09:24:40 +02:00
parent 55c152164f
commit 54af7cbf4b
1 changed files with 48 additions and 0 deletions
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48
source/blender/blenlib/BLI_string.h
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@@ -32,6 +32,7 @@ extern "C" {
#endif
#include "BLI_compiler_attrs.h"
#include "BLI_utildefines_variadic.h"
char *BLI_strdupn(const char *str, const size_t len) ATTR_MALLOC ATTR_WARN_UNUSED_RESULT ATTR_NONNULL();
@@ -117,6 +118,53 @@ int BLI_string_find_split_words(
len += BLI_snprintf_rlen(dst + len, ARRAY_SIZE(dst) - len, format, __VA_ARGS__)
/** \} */
/* -------------------------------------------------------------------- */
/** \name Equal to Any Element (STR_ELEM) Macro
*
* Follows #ELEM macro convention.
* \{ */
/* STR_ELEM#(v, ...): is the first arg equal any others? */
/* Internal helpers. */
#define _VA_STR_ELEM2(v, a) \
(strcmp(v, a) == 0)
#define _VA_STR_ELEM3(v, a, b) \
(_VA_STR_ELEM2(v, a) || ((v) == (b)))
#define _VA_STR_ELEM4(v, a, b, c) \
(_VA_STR_ELEM3(v, a, b) || ((v) == (c)))
#define _VA_STR_ELEM5(v, a, b, c, d) \
(_VA_STR_ELEM4(v, a, b, c) || ((v) == (d)))
#define _VA_STR_ELEM6(v, a, b, c, d, e) \
(_VA_STR_ELEM5(v, a, b, c, d) || ((v) == (e)))
#define _VA_STR_ELEM7(v, a, b, c, d, e, f) \
(_VA_STR_ELEM6(v, a, b, c, d, e) || ((v) == (f)))
#define _VA_STR_ELEM8(v, a, b, c, d, e, f, g) \
(_VA_STR_ELEM7(v, a, b, c, d, e, f) || ((v) == (g)))
#define _VA_STR_ELEM9(v, a, b, c, d, e, f, g, h) \
(_VA_STR_ELEM8(v, a, b, c, d, e, f, g) || ((v) == (h)))
#define _VA_STR_ELEM10(v, a, b, c, d, e, f, g, h, i) \
(_VA_STR_ELEM9(v, a, b, c, d, e, f, g, h) || ((v) == (i)))
#define _VA_STR_ELEM11(v, a, b, c, d, e, f, g, h, i, j) \
(_VA_STR_ELEM10(v, a, b, c, d, e, f, g, h, i) || ((v) == (j)))
#define _VA_STR_ELEM12(v, a, b, c, d, e, f, g, h, i, j, k) \
(_VA_STR_ELEM11(v, a, b, c, d, e, f, g, h, i, j) || ((v) == (k)))
#define _VA_STR_ELEM13(v, a, b, c, d, e, f, g, h, i, j, k, l) \
(_VA_STR_ELEM12(v, a, b, c, d, e, f, g, h, i, j, k) || ((v) == (l)))
#define _VA_STR_ELEM14(v, a, b, c, d, e, f, g, h, i, j, k, l, m) \
(_VA_STR_ELEM13(v, a, b, c, d, e, f, g, h, i, j, k, l) || ((v) == (m)))
#define _VA_STR_ELEM15(v, a, b, c, d, e, f, g, h, i, j, k, l, m, n) \
(_VA_STR_ELEM14(v, a, b, c, d, e, f, g, h, i, j, k, l, m) || ((v) == (n)))
#define _VA_STR_ELEM16(v, a, b, c, d, e, f, g, h, i, j, k, l, m, n, o) \
(_VA_STR_ELEM15(v, a, b, c, d, e, f, g, h, i, j, k, l, m, n) || ((v) == (o)))
#define _VA_STR_ELEM17(v, a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p) \
(_VA_STR_ELEM16(v, a, b, c, d, e, f, g, h, i, j, k, l, m, n, o) || ((v) == (p)))
/* reusable STR_ELEM macro */
#define STR_ELEM(...) VA_NARGS_CALL_OVERLOAD(_VA_STR_ELEM, __VA_ARGS__)
/** \} */
#ifdef __cplusplus
}
#endif