/*
 * Copyright (c) Facebook, Inc. and its affiliates.
 *
 * 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.parser;

/**
 * Contains information about meta rules (rules that are created by Buck to pass internal
 * information about parsing process)
 */
public class MetaRules {

  /**
   * Key of the meta-rule that lists the build files executed while reading rules. The value is a
   * list of strings with the root build file as the head and included build files as the tail, for
   * example: {"__includes":["/foo/BUCK", "/foo/buck_includes"]}
   */
  public static final String INCLUDES = "__includes";

  public static final String CONFIGS = "__configs";

  public static final String ENV = "__env";

  private MetaRules() {}
}
