Eugene Susla | cf00ade | 2017-04-10 11:51:58 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2017 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | package com.android.internal.util; |
| 18 | |
| 19 | import java.util.function.Supplier; |
| 20 | |
| 21 | /** |
| 22 | * Utilities specific to functional programming |
| 23 | */ |
| 24 | public class FunctionalUtils { |
| 25 | private FunctionalUtils() {} |
| 26 | |
| 27 | /** |
| 28 | * An equivalent of {@link Runnable} that allows throwing checked exceptions |
| 29 | * |
| 30 | * This can be used to specify a lambda argument without forcing all the checked exceptions |
| 31 | * to be handled within it |
| 32 | */ |
| 33 | @FunctionalInterface |
| 34 | public interface ThrowingRunnable { |
| 35 | void run() throws Exception; |
| 36 | } |
| 37 | |
| 38 | /** |
| 39 | * An equivalent of {@link Supplier} that allows throwing checked exceptions |
| 40 | * |
| 41 | * This can be used to specify a lambda argument without forcing all the checked exceptions |
| 42 | * to be handled within it |
| 43 | */ |
| 44 | @FunctionalInterface |
| 45 | public interface ThrowingSupplier<T> { |
| 46 | T get() throws Exception; |
| 47 | } |
| 48 | } |