Function luaS_resize

ThirdParty/lua/lua/lstring.c:60–85

** resizes the string table */

** resizes the string table
*/
void luaS_resize (lua_State *L, int newsize) {
  int i;
  stringtable *tb = &G(L)->strt;
  if (newsize > tb->size) {  /* grow table if needed */
    luaM_reallocvector(L, tb->hash, tb->size, newsize, TString *);
    for (i = tb->size; i < newsize; i++)
      tb->hash[i] = NULL;
  }
  for (i = 0; i < tb->size; i++) {  /* rehash */
    TString *p = tb->hash[i];
    tb->hash[i] = NULL;
    while (p) {  /* for each node in the list */
      TString *hnext = p->hnext;  /* save next */
      unsigned int h = lmod(p->hash, newsize);  /* new position */
      p->hnext = tb->hash[h];  /* chain it */
      tb->hash[h] = p;
      p = hnext;
    }
  }
  if (newsize < tb->size) {  /* shrink table if needed */
    /* vanishing slice should be empty */
    lua_assert(tb->hash[newsize] == NULL && tb->hash[tb->size - 1] == NULL);
    luaM_reallocvector(L, tb->hash, tb->size, newsize, TString *);
  }
  tb->size = newsize;
}