1 /* 2 * Copyright 2017 The gRPC Authors 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 io.grpc.internal; 18 19 import com.google.common.base.Preconditions; 20 21 /** Utility functions when interacting with {@link Throwable}s. */ 22 // TODO(ejona): Delete this once we've upgraded to Guava 20 or later. 23 public final class MoreThrowables { 24 /** 25 * Throws {code t} if it is an instance of {@link RuntimeException} or {@link Error}. 26 * 27 * <p>This is intended to mimic Guava's method by the same name, but which is unavailable to us 28 * due to compatibility with older Guava versions. 29 */ throwIfUnchecked(Throwable t)30 public static void throwIfUnchecked(Throwable t) { 31 Preconditions.checkNotNull(t); 32 if (t instanceof RuntimeException) { 33 throw (RuntimeException) t; 34 } 35 if (t instanceof Error) { 36 throw (Error) t; 37 } 38 } 39 40 // Prevent instantiation MoreThrowables()41 private MoreThrowables() {} 42 } 43