| // Copyright 2023 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.analysis.producers; |
| |
| import com.google.devtools.build.lib.analysis.ConfiguredTargetValue; |
| import com.google.devtools.build.lib.causes.Cause; |
| import com.google.devtools.build.lib.cmdline.PackageIdentifier; |
| import com.google.devtools.build.lib.collect.nestedset.NestedSet; |
| import com.google.devtools.build.lib.collect.nestedset.NestedSetBuilder; |
| import com.google.devtools.build.lib.packages.Package; |
| import java.util.concurrent.ConcurrentHashMap; |
| import javax.annotation.Nullable; |
| |
| /** Tuple storing state associated with transitive dependencies. */ |
| public final class TransitiveDependencyState { |
| private final NestedSetBuilder<Cause> transitiveRootCauses; |
| |
| /** |
| * The set of packages transitively loaded for the value being built. |
| * |
| * <p>See {@link |
| * com.google.devtools.build.lib.analysis.ConfiguredObjectValue#getTransitivePackages}. |
| * |
| * <p>Non-null when transitive packages are tracked, determined by {@link |
| * com.google.devtools.build.lib.skyframe.SkyframeExecutor#shouldStoreTransitivePackagesInLoadingAndAnalysis}. |
| */ |
| @Nullable private final NestedSetBuilder<Package> transitivePackages; |
| |
| /** |
| * Contains packages that were previously computed. |
| * |
| * <p>It's valid to obtain packages of dependencies from this map instead of creating an edge in |
| * {@code Skyframe} due to the transitive dependency through the {@link ConfiguredTarget}. Note |
| * that this is compatible with bottom-up change pruning because {@link ConfiguredTargetValue} |
| * uses identity equals. |
| */ |
| @Nullable // TODO(b/261521010): make this non-null. |
| private final ConcurrentHashMap<PackageIdentifier, Package> prerequisitePackages; |
| |
| public TransitiveDependencyState( |
| NestedSetBuilder<Cause> transitiveRootCauses, |
| @Nullable NestedSetBuilder<Package> transitivePackages, |
| @Nullable ConcurrentHashMap<PackageIdentifier, Package> prerequisitePackages) { |
| this.transitiveRootCauses = transitiveRootCauses; |
| this.transitivePackages = transitivePackages; |
| this.prerequisitePackages = prerequisitePackages; |
| } |
| |
| public NestedSetBuilder<Package> transitivePackages() { |
| return transitivePackages; |
| } |
| |
| public void addTransitiveCauses(NestedSet<Cause> transitiveCauses) { |
| transitiveRootCauses.addTransitive(transitiveCauses); |
| } |
| |
| /** |
| * Adds to the set of transitive packages if tracked. |
| * |
| * <p>This is a no-op otherwise. |
| */ |
| public void updateTransitivePackages(ConfiguredTargetValue configuredTarget) { |
| if (transitivePackages == null) { |
| return; |
| } |
| transitivePackages.addTransitive(configuredTarget.getTransitivePackages()); |
| } |
| |
| @Nullable |
| public Package getDependencyPackage(PackageIdentifier packageId) { |
| if (prerequisitePackages == null) { |
| return null; |
| } |
| return prerequisitePackages.get(packageId); |
| } |
| } |