src/hash.h

   1 /*
   2  * Copyright 1993, 1995 Christopher Seiwald.
   3  *
   4  * This file is part of Jam - see jam.c for Copyright information.
   5  */
   6 /*
   7  * hash.h - simple in-memory hashing routines
   8  *
   9  * 11/04/02 (seiwald) - const-ing for string literals
  10  */
  11 #ifndef JAMH_HASH_H
  12 #define JAMH_HASH_H
  13
  14
  15 typedef struct hashdata HASHDATA;
  16
  17 extern struct hash *hashinit (int datalen, const char *name);
  18 extern int hashitem (struct hash *hp, HASHDATA **data, int enter);
  19 extern void hashdone (struct hash *hp);
  20
  21 /* return !0 from itercb() to stop; returns result of itercb() */
  22 typedef int (*HashIteratorCB) (const void *hdata, void *udata);
  23 extern int hashiterate (struct hash *hp, HashIteratorCB itercb, void *udata);
  24
  25 static inline int hashenter (struct hash *hp, HASHDATA **data) { return !hashitem(hp, data, !0); }
  26 static inline int hashcheck (struct hash *hp, HASHDATA **data) { return hashitem(hp, data, 0); }
  27 //#define hashenter(hp, data)  (!hashitem(hp, data, !0))
  28 //#define hashcheck(hp, data)  (hashitem(hp, data, 0))
  29
  30
  31 #endif