Function lcons_oid

src/backend/nodes/list.c:503–516

* Prepend an OID to the list. See lcons() */

 * Prepend an OID to the list. See lcons()
 */
List *
lcons_oid(Oid datum, List *list)
{
	Assert(IsOidList(list));

	if (list == NIL)
		list = new_list(T_OidList, 1);
	else
		new_head_cell(list);

	linitial_oid(list) = datum;
	check_list_invariants(list);
	return list;
}

/*
 * Concatenate list2 to the end of list1, and return list1.