1 /* 2 * Copyright (C) 2013 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 android.hardware.camera2.utils; 18 19 /** 20 * @hide 21 */ 22 public class UncheckedThrow { 23 24 /** 25 * Throw any kind of exception without needing it to be checked 26 * @param e any instance of a Exception 27 */ throwAnyException(Exception e)28 public static void throwAnyException(Exception e) { 29 /** 30 * Abuse type erasure by making the compiler think we are throwing RuntimeException, 31 * which is unchecked, but then inserting any exception in there. 32 */ 33 UncheckedThrow.<RuntimeException>throwAnyImpl(e); 34 } 35 36 /** 37 * Throw any kind of throwable without needing it to be checked 38 * @param e any instance of a Throwable 39 */ throwAnyException(Throwable e)40 public static void throwAnyException(Throwable e) { 41 /** 42 * Abuse type erasure by making the compiler think we are throwing RuntimeException, 43 * which is unchecked, but then inserting any exception in there. 44 */ 45 UncheckedThrow.<RuntimeException>throwAnyImpl(e); 46 } 47 48 @SuppressWarnings("unchecked") throwAnyImpl(Throwable e)49 private static<T extends Throwable> void throwAnyImpl(Throwable e) throws T { 50 throw (T) e; 51 } 52 } 53