| // 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.ir.code; |
| |
| import java.util.Iterator; |
| import java.util.function.Predicate; |
| |
| public interface NextUntilIterator<T> extends Iterator<T> { |
| |
| /** |
| * Continue to call {@link #next} while {@code predicate} tests {@code false}. |
| * |
| * @returns the item that matched the predicate or {@code null} if all items fail the predicate |
| * test |
| */ |
| @SuppressWarnings("unchecked") |
| default <S extends T> S nextUntil(Predicate<T> predicate) { |
| while (hasNext()) { |
| T item = next(); |
| if (predicate.test(item)) { |
| return (S) item; |
| } |
| } |
| return null; |
| } |
| } |