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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.query2;
import com.google.devtools.build.lib.analysis.ConfiguredTarget;
import com.google.devtools.build.lib.cmdline.Label;
import com.google.devtools.build.lib.packages.NoSuchTargetException;
import com.google.devtools.build.lib.packages.Rule;
import com.google.devtools.build.lib.packages.Target;
import com.google.devtools.build.lib.packages.TargetUtils;
import com.google.devtools.build.lib.query2.engine.QueryEnvironment.TargetAccessor;
import com.google.devtools.build.lib.query2.engine.QueryException;
import com.google.devtools.build.lib.query2.engine.QueryExpression;
import com.google.devtools.build.lib.query2.engine.QueryVisibility;
import com.google.devtools.build.lib.rules.AliasConfiguredTarget;
import com.google.devtools.build.lib.skyframe.PackageValue;
import com.google.devtools.build.skyframe.WalkableGraph;
import java.util.List;
import java.util.Set;
/** A {@link TargetAccessor} for {@link ConfiguredTarget} objects.
*
* Incomplete; we'll implement getLabelListAttr and getVisibility when needed.
*/
class ConfiguredTargetAccessor implements TargetAccessor<ConfiguredTarget> {
private final WalkableGraph walkableGraph;
ConfiguredTargetAccessor(WalkableGraph walkableGraph) {
this.walkableGraph = walkableGraph;
}
@Override
public String getTargetKind(ConfiguredTarget target) {
Target actualTarget = getTargetFromConfiguredTarget(target);
return actualTarget.getTargetKind();
}
@Override
public String getLabel(ConfiguredTarget target) {
return target.getLabel().toString();
}
@Override
public String getPackage(ConfiguredTarget target) {
return target.getLabel().getPackageIdentifier().getPackageFragment().toString();
}
@Override
public boolean isRule(ConfiguredTarget target) {
Target actualTarget = getTargetFromConfiguredTarget(target);
return actualTarget instanceof Rule;
}
@Override
public boolean isTestRule(ConfiguredTarget target) {
Target actualTarget = getTargetFromConfiguredTarget(target);
return TargetUtils.isTestRule(actualTarget);
}
@Override
public boolean isTestSuite(ConfiguredTarget target) {
Target actualTarget = getTargetFromConfiguredTarget(target);
return TargetUtils.isTestSuiteRule(actualTarget);
}
@Override
public List<ConfiguredTarget> getLabelListAttr(
QueryExpression caller,
ConfiguredTarget configuredTarget,
String attrName,
String errorMsgPrefix)
throws QueryException, InterruptedException {
// TODO(bazel-team): implement this if needed.
throw new UnsupportedOperationException();
}
@Override
public List<String> getStringListAttr(ConfiguredTarget target, String attrName) {
Target actualTarget = getTargetFromConfiguredTarget(target);
return TargetUtils.getStringListAttr(actualTarget, attrName);
}
@Override
public String getStringAttr(ConfiguredTarget target, String attrName) {
Target actualTarget = getTargetFromConfiguredTarget(target);
return TargetUtils.getStringAttr(actualTarget, attrName);
}
@Override
public Iterable<String> getAttrAsString(ConfiguredTarget target, String attrName) {
Target actualTarget = getTargetFromConfiguredTarget(target);
return TargetUtils.getAttrAsString(actualTarget, attrName);
}
@Override
public Set<QueryVisibility<ConfiguredTarget>> getVisibility(ConfiguredTarget from)
throws QueryException, InterruptedException {
// TODO(bazel-team): implement this if needed.
throw new UnsupportedOperationException();
}
public Target getTargetFromConfiguredTarget(ConfiguredTarget configuredTarget) {
return getTargetFromConfiguredTarget(configuredTarget, walkableGraph);
}
public static Target getTargetFromConfiguredTarget(
ConfiguredTarget configuredTarget, WalkableGraph walkableGraph) {
Target target = null;
try {
Label label =
configuredTarget instanceof AliasConfiguredTarget
? ((AliasConfiguredTarget) configuredTarget).getOriginalLabel()
: configuredTarget.getLabel();
target =
((PackageValue) walkableGraph.getValue(PackageValue.key(label.getPackageIdentifier())))
.getPackage()
.getTarget(label.getName());
} catch (NoSuchTargetException e) {
throw new IllegalStateException("Unable to get target from package in accessor.");
} catch (InterruptedException e2) {
throw new IllegalStateException("Thread interrupted in the middle of getting a Target.");
}
return target;
}
}
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