// 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.lib.vfs;

import java.io.IOException;

import javax.annotation.Nullable;

/**
 * A FileStatus that also optionally returns a Digest.
 */
public interface FileStatusWithDigest extends FileStatus {
  /**
   * @return the digest of the file - optional.
   */
  @Nullable
  byte[] getDigest() throws IOException;
}
