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utils/dynarr: add dynarr_find_pod

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Signed-off-by: Yuxuan Shui <yshuiv7@gmail.com>
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Yuxuan Shui 2024-06-05 19:57:51 +01:00
parent 43e0a99259
commit 4dc78789da
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1 changed files with 14 additions and 0 deletions

14
src/utils/dynarr.h
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@ -169,3 +169,17 @@ static inline void dynarr_remove_swap_impl(size_t size, void *arr, size_t idx) {
#define dynarr_foreach(arr, i) for (typeof(arr)(i) = (arr); (i) < dynarr_end(arr); (i)++)
#define dynarr_foreach_rev(arr, i) \
for (typeof(arr)(i) = dynarr_end(arr) - 1; (i) >= (arr); (i)--)
/// Find the index of an element in the array by using trivial comparison, returns -1 if
/// not found.
#define dynarr_find_pod(arr, needle) \
({ \
ptrdiff_t dynarr_find_ret = -1; \
dynarr_foreach(arr, dynarr_find_i) { \
if (*dynarr_find_i == (needle)) { \
dynarr_find_ret = dynarr_find_i - (arr); \
break; \
} \
} \
dynarr_find_ret; \
})