| // Copyright 2014 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.configuredtargets; |
| |
| import com.google.devtools.build.lib.actions.Artifact; |
| import com.google.devtools.build.lib.analysis.FileProvider; |
| import com.google.devtools.build.lib.analysis.PackageSpecificationProvider; |
| import com.google.devtools.build.lib.analysis.TargetContext; |
| import com.google.devtools.build.lib.analysis.TransitiveInfoCollection; |
| import com.google.devtools.build.lib.analysis.TransitiveInfoProvider; |
| import com.google.devtools.build.lib.cmdline.Label; |
| import com.google.devtools.build.lib.collect.nestedset.NestedSet; |
| import com.google.devtools.build.lib.collect.nestedset.NestedSetBuilder; |
| import com.google.devtools.build.lib.collect.nestedset.Order; |
| import com.google.devtools.build.lib.concurrent.ThreadSafety.Immutable; |
| import com.google.devtools.build.lib.events.Event; |
| import com.google.devtools.build.lib.packages.Info; |
| import com.google.devtools.build.lib.packages.PackageGroup; |
| import com.google.devtools.build.lib.packages.PackageSpecification.PackageGroupContents; |
| import com.google.devtools.build.lib.packages.Provider; |
| import com.google.devtools.build.lib.skyframe.serialization.autocodec.AutoCodec; |
| import com.google.devtools.build.lib.skyframe.serialization.autocodec.AutoCodec.Instantiator; |
| import com.google.devtools.build.lib.skyframe.serialization.autocodec.AutoCodec.VisibleForSerialization; |
| import java.util.Optional; |
| |
| /** |
| * Dummy ConfiguredTarget for package groups. Contains no functionality, since package groups are |
| * not really first-class Targets. |
| */ |
| @AutoCodec |
| @Immutable // (and Starlark-hashable) |
| public final class PackageGroupConfiguredTarget extends AbstractConfiguredTarget |
| implements PackageSpecificationProvider { |
| private static final FileProvider NO_FILES = new FileProvider( |
| NestedSetBuilder.<Artifact>emptySet(Order.STABLE_ORDER)); |
| |
| private final NestedSet<PackageGroupContents> packageSpecifications; |
| |
| @VisibleForSerialization |
| @Instantiator |
| PackageGroupConfiguredTarget( |
| Label label, |
| NestedSet<PackageGroupContents> visibility, |
| NestedSet<PackageGroupContents> packageSpecifications) { |
| super(label, null, visibility); |
| this.packageSpecifications = packageSpecifications; |
| } |
| |
| public PackageGroupConfiguredTarget(TargetContext targetContext, PackageGroup packageGroup) { |
| this( |
| targetContext.getLabel(), |
| targetContext.getVisibility(), |
| getPackageSpecifications(targetContext, packageGroup)); |
| } |
| |
| private static NestedSet<PackageGroupContents> getPackageSpecifications( |
| TargetContext targetContext, PackageGroup packageGroup) { |
| NestedSetBuilder<PackageGroupContents> builder = NestedSetBuilder.stableOrder(); |
| for (Label label : packageGroup.getIncludes()) { |
| TransitiveInfoCollection include = |
| targetContext.findDirectPrerequisite( |
| label, Optional.ofNullable(targetContext.getConfiguration())); |
| PackageSpecificationProvider provider = include == null ? null |
| : include.getProvider(PackageSpecificationProvider.class); |
| if (provider == null) { |
| targetContext |
| .getAnalysisEnvironment() |
| .getEventHandler() |
| .handle( |
| Event.error( |
| targetContext.getTarget().getLocation(), |
| String.format("label '%s' does not refer to a package group", label))); |
| continue; |
| } |
| |
| builder.addTransitive(provider.getPackageSpecifications()); |
| } |
| |
| builder.add(packageGroup.getPackageSpecifications()); |
| return builder.build(); |
| } |
| |
| @Override |
| public NestedSet<PackageGroupContents> getPackageSpecifications() { |
| return packageSpecifications; |
| } |
| |
| @Override |
| public <P extends TransitiveInfoProvider> P getProvider(Class<P> provider) { |
| if (provider == FileProvider.class) { |
| return provider.cast(NO_FILES); // can't fail |
| } else { |
| return super.getProvider(provider); |
| } |
| } |
| |
| @Override |
| protected Info rawGetSkylarkProvider(Provider.Key providerKey) { |
| return null; |
| } |
| |
| @Override |
| protected Object rawGetSkylarkProvider(String providerKey) { |
| return null; |
| } |
| } |