/* Remove elems of V that are covered by another elem. V must be a diff list.
LEN is length of each array. */
static void
vec_compact (struct hs_vec *v, int len)
{
for (int i = 0; i < v->used; i++) {
for (int j = i + 1; j < v->used; j++) {
int sub;
if (array_is_sub (v->elems[i], v->elems[j], len)) sub = j;
else if (array_is_sub (v->elems[j], v->elems[i], len)) sub = i;
else continue;
vec_elem_free (v, sub);
if (sub == j) { j--; continue; }
else { i--; break; }
}
}
}
bool
hs_compact_m (struct hs *hs, const array_t *mask)
{
struct hs_vec *v = &hs->list;
for (int i = 0; i < v->used; i++) {
vec_compact (&v->diff[i], mask, hs->len);
for (int j = 0; j < v->diff[i].used; j++) {
if (!array_is_sub (v->diff[i].elems[j], v->elems[i], hs->len)) continue;
vec_elem_free (v, i);
i--; break;
}
}
return v->used;
}
