ref: 32172cdf6a00026675dee9be5c0fa3aef5fdff9d
dir: femtolisp/llt/htableh.inc
//-*- mode:c -*- #include "htable.h" #define HTPROT(HTNAME) \ void *HTNAME##_get(htable_t *h, void *key); \ void HTNAME##_put(htable_t *h, void *key, void *val); \ void HTNAME##_adjoin(htable_t *h, void *key, void *val); \ int HTNAME##_has(htable_t *h, void *key); \ int HTNAME##_remove(htable_t *h, void *key); \ void **HTNAME##_bp(htable_t *h, void *key); // return value, or HT_NOTFOUND if key not found // add key/value binding // add binding iff key is unbound // does key exist? // logically remove key // get a pointer to the location of the value for the given key. // creates the location if it doesn't exist. only returns NULL // if memory allocation fails. // this should be used for updates, for example: // void **bp = ptrhash_bp(h, key); // *bp = f(*bp); // do not reuse bp if there might be intervening calls to ptrhash_put, // ptrhash_bp, ptrhash_reset, or ptrhash_free.