7.8.5 Starting at an Inserted Node

This implementation is a trivial adaptation of <AVL traverser insertion initializer 179>. In particular, management of generation numbers has been removed.

273. <TBST traverser insertion initializer 273> =
void *
tbst_t_insert (struct tbst_traverser *trav, 
               struct tbst_table *tree, void *item) 
{
  void **p;

  assert (trav != NULL && tree != NULL && item != NULL);

  p = tbst_probe (tree, item);
  if (p != NULL) 
    {
      trav->tbst_table = tree;
      trav->tbst_node =
        ((struct tbst_node *) 
         ((char *) p - offsetof (struct tbst_node, tbst_data)));
      return *p;
    } 
  else 
    {
      tbst_t_init (trav, tree);
      return NULL;
    }
}

This code is included in 268, 395, and 546.