src/main/java/com/google/devtools/build/skyframe/ConstantVersion.java

// Copyright 2017 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;

/** Use when only a single evaluation of the graph with a single constant version is expected. */
public class ConstantVersion implements Version {
  public static final ConstantVersion INSTANCE = new ConstantVersion();

  private ConstantVersion() {}

  @Override
  public boolean atMost(Version other) {
    return this.equals(other);
  }
}