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// Copyright 2014 Google Inc. 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.devtools.build.lib.actions.Artifact;
import com.google.devtools.build.lib.analysis.config.BuildConfiguration;
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.packages.PackageSpecification;
import com.google.devtools.build.lib.packages.Target;
import com.google.devtools.build.lib.syntax.ClassObject;
import com.google.devtools.build.lib.syntax.Label;
import com.google.devtools.build.lib.syntax.SkylarkNestedSet;
/**
* An abstract implementation of ConfiguredTarget in which all properties are
* assigned trivial default values.
*/
public abstract class AbstractConfiguredTarget
implements ConfiguredTarget, VisibilityProvider, ClassObject {
private final Target target;
private final BuildConfiguration configuration;
private final NestedSet<PackageSpecification> visibility;
// 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 LABEL_FIELD = "label";
private static final String FILES_FIELD = "files";
AbstractConfiguredTarget(Target target,
BuildConfiguration configuration) {
this.target = target;
this.configuration = configuration;
this.visibility = NestedSetBuilder.emptySet(Order.STABLE_ORDER);
}
AbstractConfiguredTarget(TargetContext targetContext) {
this.target = targetContext.getTarget();
this.configuration = targetContext.getConfiguration();
this.visibility = targetContext.getVisibility();
}
@Override
public final NestedSet<PackageSpecification> getVisibility() {
return visibility;
}
@Override
public Target getTarget() {
return target;
}
@Override
public BuildConfiguration getConfiguration() {
return configuration;
}
@Override
public Label getLabel() {
return getTarget().getLabel();
}
@Override
public String toString() {
return "ConfiguredTarget(" + getTarget().getLabel() + ", " + getConfiguration() + ")";
}
@Override
public <P extends TransitiveInfoProvider> P getProvider(Class<P> provider) {
AnalysisUtils.checkProvider(provider);
if (provider.isAssignableFrom(getClass())) {
return provider.cast(this);
} else {
return null;
}
}
@Override
public Object getValue(String name) {
switch (name) {
case LABEL_FIELD:
return getLabel();
case FILES_FIELD:
// A shortcut for files to build in Skylark. FileConfiguredTarget and RunleConfiguredTarget
// always has FileProvider and Error- and PackageGroupConfiguredTarget-s shouldn't be
// accessible in Skylark.
return SkylarkNestedSet.of(
Artifact.class, getProvider(FileProvider.class).getFilesToBuild());
case DEFAULT_RUNFILES_FIELD:
return RunfilesProvider.DEFAULT_RUNFILES.apply(this);
case DATA_RUNFILES_FIELD:
return RunfilesProvider.DATA_RUNFILES.apply(this);
default:
return get(name);
}
}
@Override
public String errorMessage(String name) {
return null;
}
@Override
public ImmutableCollection<String> getKeys() {
return ImmutableList.of("data_runfiles", "default_runfiles", "label", "files");
}
}
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