/*
* Copyright 2016 Google Inc. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.google.errorprone.bugpatterns.testdata;
import java.util.Iterator;
/**
* @author jsjeon@google.com (Jinseong Jeon)
*/
public class IterableAndIteratorPositiveCases {
/**
* Test Node
*/
public static class MyNode {
String tag;
MyNode next;
}
/**
* Test List that implements only Iterator
*/
public static class MyList1 implements Iterator<MyNode> {
private MyNode head;
public MyList1() {
head = null;
}
@Override
public boolean hasNext() {
return head != null;
}
@Override
public MyNode next() {
if (hasNext()) {
MyNode ret = head;
head = head.next;
return ret;
}
return null;
}
@Override
public void remove() {
throw new UnsupportedOperationException("remove is not supported");
}
public void add(MyNode node) {
if (!hasNext()) {
head.next = node;
}
head = node;
}
}
/**
* Test List that implements only Iterable
*/
public static class MyList2 implements Iterable<MyNode> {
@Override
public Iterator<MyNode> iterator() {
MyList1 l = new MyList1();
// code to populate the list goes here
return l;
}
}
}