1 /*
2  * Copyright (C) 2022 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 package android.car.test.util;
17 
18 /**
19  * Similar to Java's {@link java.util.function.Function}, but for methods that throw.
20  *
21  * @param <T> the type of the input to the function
22  * @param <R> the type of the result of the function
23  * @param <E> the type of the exception of the function
24  */
25 public interface ExceptionalFunction<T, R, E extends Exception> {
26 
27     /**
28      * Applies this function to the given argument.
29      *
30      * @param t the function argument
31      * @return the function result
32      * @throws E the exception it can throw
33      */
apply(T t)34     R apply(T t) throws E;
35 }
36