| // Copyright (c) 2017, the R8 project authors. Please see the AUTHORS file |
| // for details. All rights reserved. Use of this source code is governed by a |
| // BSD-style license that can be found in the LICENSE file. |
| |
| package com.android.tools.r8.utils; |
| |
| import java.util.ListIterator; |
| |
| public class IteratorUtils { |
| public static <T> T peekPrevious(ListIterator<T> iterator) { |
| T previous = iterator.previous(); |
| T next = iterator.next(); |
| assert previous == next; |
| return previous; |
| } |
| |
| public static <T> T peekNext(ListIterator<T> iterator) { |
| T next = iterator.next(); |
| T previous = iterator.previous(); |
| assert previous == next; |
| return next; |
| } |
| } |