/*
 * Copyright 2012-present Facebook, Inc.
 *
 * 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.facebook.buck.rules;

import com.facebook.buck.util.immutables.BuckStyleImmutable;

import org.immutables.value.Value;

@Value.Immutable
@BuckStyleImmutable
public abstract class Label implements Comparable<Label> {

  @Value.Parameter
  public abstract String getLabelString();

  @Override
  public int compareTo(Label that) {
    if (that == this) {
      return 0;
    }
    return getLabelString().compareTo(that.getLabelString());
  }

}