diff options
Diffstat (limited to 'lib/hash.h')
| -rw-r--r-- | lib/hash.h | 83 |
1 files changed, 83 insertions, 0 deletions
diff --git a/lib/hash.h b/lib/hash.h new file mode 100644 index 00000000..7464f140 --- /dev/null +++ b/lib/hash.h @@ -0,0 +1,83 @@ + + +#define HASH(type) struct { type **data; uint used, size; } +#define HASH_TYPE(v) typeof(** (v).data) +#define HASH_SIZE(v) ((v).size * sizeof(* (v).data)) + +#define HASH_INIT(v,pool,isize) \ + ({ \ + (v).used = 0; \ + (v).size = (isize); \ + (v).data = mb_allocz(pool, HASH_SIZE(v)); \ + }) + +#define HASH_FIND(v,id,key) \ + ({ \ + HASH_TYPE(v) *_n = (v).data[id##_FN(key, (v).size)]; \ + while (_n && !id##_EQ(_n, key)) \ + _n = _n->id##_NEXT; \ + _n; \ + }) + +#define HASH_INSERT(v,id,key,node) \ + ({ \ + HASH_TYPE(v) **_nn = (v).data + id##_FN(key, (v).size); \ + node->id##_NEXT = *_nn; \ + *_nn = node; \ + }) + +#define HASH_DELETE(v,id,key) \ + ({ \ + HASH_TYPE(v) **_nn = (v).data + id##_FN(key, (v).size); \ + while ((*_nn) && !id##_EQ(*_nn, key)) \ + _nn = &((*_nn)->id##_NEXT); \ + \ + HASH_TYPE(v) *_n = *_nn; \ + if (_n) \ + *_nn = _n->id##_NEXT; \ + _n; \ + }) + +#define HASH_REMOVE(v,id,node) \ + ({ \ + HASH_TYPE(v) **_nn = (v).data + id##_FN(key, (v).size); \ + while ((*_nn) && (*_nn != (node))) \ + _nn = &((*_nn)->id##_NEXT); \ + \ + HASH_TYPE(v) *_n = *_nn; \ + if (_n) \ + *_nn = _n->id##_NEXT; \ + _n; \ + }) + + + +#define HASH_WALK(v,next,n) \ + do { \ + HASH_TYPE(v) *n; \ + uint _i; \ + for (_i = 0; _i < ((v).size); _i++) \ + for (n = (v).data[_i]; n; n = n->next) + +#define HASH_WALK_END } while (0) + + +#define HASH_WALK_DELSAFE(v,next,n) \ + do { \ + HASH_TYPE(v) *n, *_next; \ + uint _i; \ + for (_i = 0; _i < ((v).size); _i++) \ + for (n = (v).data[_i]; n && (_next = n->next, 1); n = _next) + +#define HASH_WALK_DELSAFE_END } while (0) + +/* +define HASH_REHASH(s) \ + ({ \ + type *_n; \ + uint _i; \ + for (_i = 0; _i < (size_f); _i++) \ + for (_n = (hash)[_i]; _n != NULL; _n = + +*/ + |