// Copyright 2014 The Bazel Authors. All rights reserved.
//
// 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.devtools.build.skyframe;
import com.google.common.annotations.VisibleForTesting;
import javax.annotation.Nullable;
/**
* Wrapper for a value or the untyped exception thrown when trying to compute it.
*
* <p>This is an implementation detail of {@link ParallelEvaluator} and
* {@link ValueOrExceptionUtils}. It's an abstract class (as opposed to an interface) to avoid
* exposing the methods outside the package.
*/
@VisibleForTesting
public abstract class ValueOrUntypedException {
/** Returns the stored value, if there was one. */
@Nullable
abstract SkyValue getValue();
/** Returns the stored exception, if there was one. */
@Nullable
abstract Exception getException();
}