redef fun iterator: ListIterator[E] do return new ListIterator[E](self)
+ redef fun reverse_iterator: ListIterator[E] do return new ListReverseIterator[E](self)
# Build an empty list.
init do end
end
end
+private class ListReverseIterator[E]
+ super ListIterator[E]
+
+ redef fun next
+ do
+ _node = _node.prev
+ _index -= 1
+ end
+
+ private init(list: List[E])
+ do
+ _list = list
+ _node = list._tail
+ _index = list.length
+ end
+end
+
# Linked nodes that constitute a linked list.
private class ListNode[E]
super Container[E]