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// Copyright 2016 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.base.Function;
import com.google.common.collect.ImmutableCollection;
import com.google.common.collect.Iterables;
import com.google.devtools.build.lib.actions.Artifact;
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.rules.SkylarkApiProvider;
import com.google.devtools.build.lib.rules.android.AndroidResourcesProvider.ResourceContainer;
import com.google.devtools.build.lib.rules.android.AndroidResourcesProvider.ResourceType;
import com.google.devtools.build.lib.rules.java.JavaRuleOutputJarsProvider;
import com.google.devtools.build.lib.rules.java.JavaRuleOutputJarsProvider.OutputJar;
import com.google.devtools.build.lib.skylarkinterface.SkylarkCallable;
import com.google.devtools.build.lib.skylarkinterface.SkylarkModule;
import javax.annotation.Nullable;
/**
* A class that exposes the Android providers to Skylark. It is intended to provide a
* simple and stable interface for Skylark users.
*/
@SkylarkModule(
name = "AndroidSkylarkApiProvider",
doc = "Provides access to information about Android rules. Every Android-related target provides "
+ "this struct, accessible as a 'java' field on a Target struct."
)
public class AndroidSkylarkApiProvider extends SkylarkApiProvider {
/** The name of the field in Skylark used to access this class. */
public static final String NAME = "android";
private final IdlInfo idlInfo = new IdlInfo();
@SkylarkCallable(
name = "apk",
structField = true,
allowReturnNones = true,
doc = "Returns an APK produced by this target."
)
public Artifact getApk() {
return getIdeInfoProvider().getSignedApk();
}
private AndroidIdeInfoProvider getIdeInfoProvider() {
return getInfo().getProvider(AndroidIdeInfoProvider.class);
}
@SkylarkCallable(
name = "java_package",
structField = true,
allowReturnNones = true,
doc = "Returns a java package for this target."
)
public String getJavaPackage() {
return getIdeInfoProvider().getJavaPackage();
}
@SkylarkCallable(
name = "manifest",
structField = true,
allowReturnNones = true,
doc = "Returns a manifest file for this target."
)
public Artifact getManifest() {
return getIdeInfoProvider().getManifest();
}
@SkylarkCallable(
name = "apks_under_test",
structField = true,
allowReturnNones = true,
doc = "Returns a collection of APKs that this target tests."
)
public ImmutableCollection<Artifact> getApksUnderTest() {
return getIdeInfoProvider().getApksUnderTest();
}
@SkylarkCallable(
name = "defines_resources",
structField = true,
doc = "Returns true if the target defines any Android resources directly."
)
public boolean definesAndroidResources() {
return getIdeInfoProvider().definesAndroidResources();
}
@SkylarkCallable(
name = "idl",
structField = true,
doc = "Returns information about IDL files associated with this target."
)
public IdlInfo getIdlInfo() {
return idlInfo;
}
@SkylarkCallable(
name = "resources",
structField = true,
doc = "Returns resources defined by this target."
)
public NestedSet<Artifact> getResources() {
return collectDirectArtifacts(ResourceType.RESOURCES);
}
private NestedSet<Artifact> collectDirectArtifacts(final ResourceType resources) {
AndroidResourcesProvider provider = getInfo().getProvider(AndroidResourcesProvider.class);
if (provider == null) {
return NestedSetBuilder.emptySet(Order.STABLE_ORDER);
}
// This will iterate over all (direct) resources. If this turns out to be a performance
// problem, {@link ResourceContainer#getArtifacts} can be changed to return NestedSets.
return NestedSetBuilder.wrap(
Order.STABLE_ORDER,
Iterables.concat(
Iterables.transform(
provider.getDirectAndroidResources(),
new Function<ResourceContainer, Iterable<Artifact>>() {
@Override
public Iterable<Artifact> apply(ResourceContainer resourceContainer) {
return resourceContainer.getArtifacts(resources);
}
})));
}
/**
* Helper class to provide information about IDLs related to this rule.
*/
@SkylarkModule(
name = "AndroidSkylarkIdlInfo",
doc = "Provides access to information about Android rules"
)
public class IdlInfo {
@SkylarkCallable(
name = "sources",
structField = true,
doc = "Returns a list of IDL files."
)
public ImmutableCollection<Artifact> getSources() {
return getIdeInfoProvider().getIdlSrcs();
}
@SkylarkCallable(
name = "generated_java_files",
structField = true,
doc = "Returns a list Java files generated from IDL sources."
)
public ImmutableCollection<Artifact> getIdlGeneratedJavaFiles() {
return getIdeInfoProvider().getIdlGeneratedJavaFiles();
}
@SkylarkCallable(
name = "output",
structField = true,
allowReturnNones = true,
doc = "Returns a jar file for classes generated from IDL sources."
)
@Nullable
public JavaRuleOutputJarsProvider.OutputJar getIdlOutput() {
if (getIdeInfoProvider().getIdlClassJar() == null) {
return null;
}
return new OutputJar(
getIdeInfoProvider().getIdlClassJar(),
null,
getIdeInfoProvider().getIdlSourceJar()
);
}
}
}
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