1 /*
2  * Copyright (C) 2018 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.atrace.cts;
18 
19 public class UncheckedThrow {
20     /**
21      * Throw any kind of exception without needing it to be checked
22      * @param e any instance of a Exception
23      */
throwAnyException(Exception e)24     public static void throwAnyException(Exception e) {
25         /**
26          *  Abuse type erasure by making the compiler think we are throwing RuntimeException,
27          *  which is unchecked, but then inserting any exception in there.
28          */
29         UncheckedThrow.<RuntimeException>throwAnyImpl(e);
30     }
31 
32     /**
33      * Throw any kind of throwable without needing it to be checked
34      * @param e any instance of a Throwable
35      */
throwAnyException(Throwable e)36     public static void throwAnyException(Throwable e) {
37         /**
38          *  Abuse type erasure by making the compiler think we are throwing RuntimeException,
39          *  which is unchecked, but then inserting any exception in there.
40          */
41         UncheckedThrow.<RuntimeException>throwAnyImpl(e);
42     }
43 
44     @SuppressWarnings("unchecked")
throwAnyImpl(Throwable e)45     private static<T extends Throwable> void throwAnyImpl(Throwable e) throws T {
46         throw (T) e;
47     }
48 }
49