static void *
_ba_iterator_last(binary_array_iterator *it)
{
binary_array_table* t = _ba_it2cont(it);
if(NULL == t) {
netsnmp_assert(NULL != t);
return NULL;
}
return _ba_iterator_position(it, t->count - 1 );
}
static int
_ba_iterator_remove(binary_array_iterator *it)
{
binary_array_table* t = _ba_it2cont(it);
if(NULL == t) {
netsnmp_assert(NULL != t);
return -1;
}
/*
* since this iterator was used for the remove, keep it in sync with
* the container. Also, back up one so that next will be the position
* that was just removed.
*/
++it->base.sync;
return netsnmp_binary_array_remove_at(it->base.container, it->pos--, NULL);
}
static int
_ba_iterator_reset(binary_array_iterator *it)
{
binary_array_table* t = _ba_it2cont(it);
if(NULL == t) {
netsnmp_assert(NULL != t);
return -1;
}
/*
* save sync count, to make sure container doesn't change while
* iterator is in use.
*/
it->base.sync = it->base.container->sync;
it->pos = 0;
return 0;
}
NETSNMP_STATIC_INLINE void *
_ba_iterator_position(binary_array_iterator *it, size_t pos)
{
binary_array_table *t = _ba_it2cont(it);
if (NULL == t)
return t; /* msg already logged */
if(it->base.container->sync != it->base.sync) {
DEBUGMSGTL(("container:iterator", "out of sync\n"));
return NULL;
}
if(0 == t->count) {
DEBUGMSGTL(("container:iterator", "empty\n"));
return NULL;
}
else if(pos >= t->count) {
DEBUGMSGTL(("container:iterator", "end of container\n"));
return NULL;
}
return t->data[ pos ];
}
