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// Copyright 2017 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;
import com.google.common.collect.ImmutableCollection;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.ImmutableMap;
import com.google.devtools.build.lib.actions.Artifact;
import com.google.devtools.build.lib.concurrent.ThreadSafety.Immutable;
import com.google.devtools.build.lib.events.Location;
import com.google.devtools.build.lib.packages.Info;
import com.google.devtools.build.lib.packages.NativeProvider;
import com.google.devtools.build.lib.packages.Provider;
import com.google.devtools.build.lib.syntax.SkylarkNestedSet;
import java.util.Map;
import java.util.concurrent.atomic.AtomicReference;
/** DefaultInfo is provided by all targets implicitly and contains all standard fields. */
@Immutable
public final class DefaultInfo extends Info {
// Accessors for Skylark
private static final String DATA_RUNFILES_FIELD = "data_runfiles";
private static final String DEFAULT_RUNFILES_FIELD = "default_runfiles";
private static final String FILES_FIELD = "files";
private static final ImmutableList<String> KEYS =
ImmutableList.of(
DATA_RUNFILES_FIELD,
DEFAULT_RUNFILES_FIELD,
FILES_FIELD,
FilesToRunProvider.SKYLARK_NAME);
private final RunfilesProvider runfilesProvider;
private final FileProvider fileProvider;
private final FilesToRunProvider filesToRunProvider;
private final AtomicReference<SkylarkNestedSet> files = new AtomicReference<>();
public static final String SKYLARK_NAME = "DefaultInfo";
public static final Provider PROVIDER =
new NativeProvider<Info>(Info.class, SKYLARK_NAME) {
@Override
protected Info createInstanceFromSkylark(Object[] args, Location loc) {
@SuppressWarnings("unchecked")
Map<String, Object> kwargs = (Map<String, Object>) args[0];
return new Info(this, kwargs, loc);
}
};
private DefaultInfo(
Provider constructor,
RunfilesProvider runfilesProvider,
FileProvider fileProvider,
FilesToRunProvider filesToRunProvider) {
// Fields map is not used here to prevent memory regression
super(constructor, ImmutableMap.<String, Object>of());
this.runfilesProvider = runfilesProvider;
this.fileProvider = fileProvider;
this.filesToRunProvider = filesToRunProvider;
}
public static DefaultInfo build(
RunfilesProvider runfilesProvider,
FileProvider fileProvider,
FilesToRunProvider filesToRunProvider) {
return new DefaultInfo(
PROVIDER, runfilesProvider, fileProvider, filesToRunProvider);
}
@Override
public Object getValue(String name) {
switch (name) {
case DATA_RUNFILES_FIELD:
return (runfilesProvider == null) ? Runfiles.EMPTY : runfilesProvider.getDataRunfiles();
case DEFAULT_RUNFILES_FIELD:
return (runfilesProvider == null) ? Runfiles.EMPTY : runfilesProvider.getDefaultRunfiles();
case FILES_FIELD:
if (files.get() == null) {
files.compareAndSet(
null, SkylarkNestedSet.of(Artifact.class, fileProvider.getFilesToBuild()));
}
return files.get();
case FilesToRunProvider.SKYLARK_NAME:
return filesToRunProvider;
}
return null;
}
@Override
public ImmutableCollection<String> getKeys() {
return KEYS;
}
}
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