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/*
 * Copyright (C) 2018 The Guava Authors
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
 * in compliance with the License. You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software distributed under the License
 * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
 * or implied. See the License for the specific language governing permissions and limitations under
 * the License.
 */

package com.google.common.util.concurrent.internal;

/**
 * Static utilities for {@link InternalFutureFailureAccess}. Most users will never need to use this
 * class.
 *
 * 

This class is GWT-compatible. * * @since {@code com.google.guava:failureaccess:1.0}, which was added as a dependency of Guava in * Guava 27.0 */ public final class InternalFutures { /** * Usually returns {@code null} but, if the given {@code Future} has failed, may optionally * return the cause of the failure. "Failure" means specifically "completed with an exception"; it * does not include "was cancelled." To be explicit: If this method returns a non-null value, * then: * *

    *
  • {@code isDone()} must return {@code true} *
  • {@code isCancelled()} must return {@code false} *
  • {@code get()} must not block, and it must throw an {@code ExecutionException} with the * return value of this method as its cause *
*/ public static Throwable tryInternalFastPathGetFailure(InternalFutureFailureAccess future) { return future.tryInternalFastPathGetFailure(); } private InternalFutures() {} }




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