| // Copyright (c) 2019, 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.function.Function; |
| import java.util.function.Predicate; |
| |
| public class PredicateUtils { |
| |
| public static <T> T findFirst(T[] items, Predicate<T> predicate) { |
| for (T entry : items) { |
| if (predicate.test(entry)) { |
| return entry; |
| } |
| } |
| return null; |
| } |
| |
| public static <T> Predicate<T> not(Predicate<T> predicate) { |
| return t -> !predicate.test(t); |
| } |
| |
| public static <T, R> Predicate<T> isNull(Function<T, R> func) { |
| return t -> func.apply(t) == null; |
| } |
| } |