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hash-funcs: introduce macro to create typesafe hash_ops

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This commit is contained in:
Yu Watanabe 2018-11-28 14:10:04 +09:00
parent e30f9c972b
commit d1005d1c00
1 changed files with 14 additions and 0 deletions
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14
src/basic/hash-funcs.h
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@ -12,6 +12,20 @@ struct hash_ops {
compare_func_t compare;
};
#define _DEFINE_HASH_OPS(uq, name, type, hash_func, compare_func, scope) \
_unused_ static void (* UNIQ_T(static_hash_wrapper, uq))(const type *, struct siphash *) = hash_func; \
_unused_ static int (* UNIQ_T(static_compare_wrapper, uq))(const type *, const type *) = compare_func; \
scope const struct hash_ops name = { \
.hash = (hash_func_t) hash_func, \
.compare = (compare_func_t) compare_func, \
}
#define DEFINE_HASH_OPS(name, type, hash_func, compare_func) \
_DEFINE_HASH_OPS(UNIQ, name, type, hash_func, compare_func,)
#define DEFINE_PRIVATE_HASH_OPS(name, type, hash_func, compare_func) \
_DEFINE_HASH_OPS(UNIQ, name, type, hash_func, compare_func, static)
void string_hash_func(const void *p, struct siphash *state);
int string_compare_func(const void *a, const void *b) _pure_;
extern const struct hash_ops string_hash_ops;