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// Copyright 2015 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.rules.android;
import com.google.common.collect.ImmutableList;
import com.google.devtools.build.lib.actions.MutableActionGraph.ActionConflictException;
import com.google.devtools.build.lib.analysis.ConfiguredAspect;
import com.google.devtools.build.lib.analysis.ConfiguredAspectFactory;
import com.google.devtools.build.lib.analysis.RuleContext;
import com.google.devtools.build.lib.analysis.TransitiveInfoCollection;
import com.google.devtools.build.lib.analysis.configuredtargets.RuleConfiguredTarget.Mode;
import com.google.devtools.build.lib.packages.AspectDefinition;
import com.google.devtools.build.lib.packages.AspectParameters;
import com.google.devtools.build.lib.packages.BuildType;
import com.google.devtools.build.lib.packages.NativeAspectClass;
import com.google.devtools.build.lib.packages.SkylarkProviderIdentifier;
import com.google.devtools.build.lib.rules.java.JavaCommon;
import com.google.devtools.build.lib.rules.java.JavaInfo;
import com.google.devtools.build.lib.skyframe.ConfiguredTargetAndData;
import java.util.ArrayList;
import java.util.List;
/**
* An aspect that collects neverlink libraries in the transitive closure.
*
* <p>Used for determining the -libraryjars argument of the Proguard invocation in Android binaries.
*
* <p>One would think that using the compile time classpath would be enough, but alas, those are
* ijars,
*/
public class AndroidNeverlinkAspect extends NativeAspectClass implements ConfiguredAspectFactory {
public static final String NAME = "AndroidNeverlinkAspect";
private static final ImmutableList<String> ATTRIBUTES =
ImmutableList.of(
"deps", "exports", "runtime_deps", "binary_under_test", "$instrumentation_test_runner");
@Override
public ConfiguredAspect create(
ConfiguredTargetAndData ctadBase, RuleContext ruleContext, AspectParameters parameters)
throws ActionConflictException {
if (!JavaCommon.getConstraints(ruleContext).contains("android")
&& !ruleContext.getRule().getRuleClass().startsWith("android_")) {
return new ConfiguredAspect.Builder(this, parameters, ruleContext).build();
}
List<TransitiveInfoCollection> deps = new ArrayList<>();
// This is probably an overestimate, but it's fine -- Proguard doesn't care if there are more
// jars in -libraryjars than is required. The alternative would be somehow getting
// JavaCommon.getDependencies() here, which would be fugly.
for (String attribute : ATTRIBUTES) {
if (!ruleContext.getRule().getRuleClassObject().hasAttr(attribute, BuildType.LABEL_LIST)) {
continue;
}
deps.addAll(ruleContext.getPrerequisites(attribute, Mode.TARGET));
}
return new ConfiguredAspect.Builder(this, parameters, ruleContext)
.addProvider(
AndroidNeverLinkLibrariesProvider.create(
AndroidCommon.collectTransitiveNeverlinkLibraries(
ruleContext,
deps,
JavaInfo.getJavaInfo(ctadBase
.getConfiguredTarget())
.getDirectRuntimeJars())))
.build();
}
@Override
public AspectDefinition getDefinition(AspectParameters aspectParameters) {
AspectDefinition.Builder builder = new AspectDefinition.Builder(this);
for (String attribute : ATTRIBUTES) {
builder.propagateAlongAttribute(attribute);
}
return builder
.requireSkylarkProviders(SkylarkProviderIdentifier.forKey(JavaInfo.PROVIDER.getKey()))
.requiresConfigurationFragments()
.build();
}
}
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