// Copyright 2021 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.skyframe;

import com.google.devtools.build.lib.actions.ActionLookupKey;
import com.google.devtools.build.lib.analysis.TopLevelArtifactContext;
import com.google.devtools.build.skyframe.SkyFunctionName;
import com.google.devtools.build.skyframe.SkyKey;
import java.util.Objects;

/**
 * Wraps an {@link ActionLookupKey}. The evaluation of this SkyKey is the entry point of analyzing
 * the {@link ActionLookupKey} and executing the associated actions.
 */
public class BuildDriverKey implements SkyKey {
  private final ActionLookupKey actionLookupKey;
  private final TopLevelArtifactContext topLevelArtifactContext;

  public BuildDriverKey(
      ActionLookupKey actionLookupKey, TopLevelArtifactContext topLevelArtifactContext) {
    this.actionLookupKey = actionLookupKey;
    this.topLevelArtifactContext = topLevelArtifactContext;
  }

  public TopLevelArtifactContext getTopLevelArtifactContext() {
    return topLevelArtifactContext;
  }

  public ActionLookupKey getActionLookupKey() {
    return actionLookupKey;
  }

  @Override
  public SkyFunctionName functionName() {
    return SkyFunctions.BUILD_DRIVER;
  }

  @Override
  public boolean equals(Object other) {
    if (other instanceof BuildDriverKey) {
      BuildDriverKey otherBuildDriverKey = (BuildDriverKey) other;
      return actionLookupKey.equals(otherBuildDriverKey.actionLookupKey)
          && topLevelArtifactContext.equals(otherBuildDriverKey.topLevelArtifactContext);
    }
    return false;
  }

  @Override
  public int hashCode() {
    return Objects.hash(actionLookupKey, topLevelArtifactContext);
  }
}