| // 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.AnalysisUtils; |
| import com.google.devtools.build.lib.analysis.FileProvider; |
| import com.google.devtools.build.lib.analysis.FilesToRunProvider; |
| import com.google.devtools.build.lib.analysis.LicensesProvider; |
| import com.google.devtools.build.lib.analysis.TargetContext; |
| import com.google.devtools.build.lib.analysis.TransitiveInfoProvider; |
| import com.google.devtools.build.lib.analysis.VisibilityProvider; |
| 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.util.FileType; |
| import javax.annotation.Nullable; |
| import net.starlark.java.eval.Dict; |
| |
| /** |
| * A ConfiguredTarget for a source FileTarget. (Generated files use a subclass, |
| * OutputFileConfiguredTarget.) |
| */ |
| @Immutable |
| public abstract class FileConfiguredTarget extends AbstractConfiguredTarget |
| implements FileType.HasFileType, LicensesProvider { |
| |
| private final NestedSet<Artifact> singleFile; |
| |
| FileConfiguredTarget(TargetContext targetContext, Artifact artifact) { |
| super(targetContext.getAnalysisEnvironment().getOwner(), targetContext.getVisibility()); |
| this.singleFile = NestedSetBuilder.create(Order.STABLE_ORDER, artifact); |
| } |
| |
| public Artifact getArtifact() { |
| return singleFile.getSingleton(); |
| } |
| |
| /** Returns the file name of this file target. */ |
| public final String getFilename() { |
| return getLabel().getName(); |
| } |
| |
| @Override |
| public final String filePathForFileTypeMatcher() { |
| return getFilename(); |
| } |
| |
| @Override |
| @Nullable |
| public <P extends TransitiveInfoProvider> P getProvider(Class<P> providerClass) { |
| AnalysisUtils.checkProvider(providerClass); |
| return providerClass.cast(getProviderInternal(providerClass)); |
| } |
| |
| @Nullable |
| private TransitiveInfoProvider getProviderInternal( |
| Class<? extends TransitiveInfoProvider> providerClass) { |
| // The set of possible providers is small and predictable, so to save memory, this method does |
| // simple identity checks so that we don't need to store a TransitiveInfoProviderMap. |
| // Additionally, file providers are created on-demand when requested. These optimizations |
| // combine to save over 1% of analysis heap. |
| if (providerClass == VisibilityProvider.class) { |
| return this; |
| } |
| if (providerClass == FileProvider.class) { |
| return createFileProvider(); |
| } |
| if (providerClass == FilesToRunProvider.class) { |
| return createFilesToRunProvider(); |
| } |
| return null; |
| } |
| |
| private FileProvider createFileProvider() { |
| return FileProvider.of(singleFile); |
| } |
| |
| private FilesToRunProvider createFilesToRunProvider() { |
| return FilesToRunProvider.create( |
| singleFile, /* runfilesSupport= */ null, /* executable= */ getArtifact()); |
| } |
| |
| @Override |
| @Nullable |
| protected final Object rawGetStarlarkProvider(String providerKey) { |
| return null; |
| } |
| |
| @Override |
| public Dict<String, Object> getProvidersDictForQuery() { |
| Dict.Builder<String, Object> dict = Dict.builder(); |
| tryAddProviderForQuery(dict, VisibilityProvider.class, this); |
| tryAddProviderForQuery(dict, LicensesProvider.class, this); |
| tryAddProviderForQuery(dict, FileProvider.class, createFileProvider()); |
| tryAddProviderForQuery(dict, FilesToRunProvider.class, createFilesToRunProvider()); |
| return dict.buildImmutable(); |
| } |
| } |