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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.android;
import com.android.resources.ResourceType;
import com.google.common.annotations.VisibleForTesting;
import com.google.common.base.Optional;
import com.google.devtools.build.android.AndroidFrameworkAttrIdProvider.AttrLookupException;
import com.google.devtools.build.android.resources.FieldInitializers;
import com.google.devtools.build.android.resources.RClassGenerator;
import com.google.devtools.build.android.resources.RSourceGenerator;
import java.io.Flushable;
import java.io.IOException;
import java.nio.file.Path;
import java.util.Map;
/**
* Generates the R class for an android_library with made up field initializers for the ids. The
* real ids will be assigned when we build the android_binary.
*
* <p>Collects the R class fields from the merged resource maps, and then writes out the resource
* class files.
*/
public class AndroidResourceClassWriter implements Flushable, AndroidResourceSymbolSink {
/** Create a new class writer. */
public static AndroidResourceClassWriter createWith(
Path androidJar, Path out, String javaPackage) {
return of(new AndroidFrameworkAttrIdJar(androidJar), out, javaPackage);
}
@VisibleForTesting
public static AndroidResourceClassWriter of(
AndroidFrameworkAttrIdProvider androidIdProvider, Path outputBasePath, String packageName) {
return new AndroidResourceClassWriter(
PlaceholderIdFieldInitializerBuilder.from(androidIdProvider), outputBasePath, packageName);
}
private final Path outputBasePath;
private final String packageName;
private boolean includeClassFile = true;
private boolean includeJavaFile = true;
private final PlaceholderIdFieldInitializerBuilder generator;
private AndroidResourceClassWriter(
PlaceholderIdFieldInitializerBuilder generator, Path outputBasePath, String packageName) {
this.generator = generator;
this.outputBasePath = outputBasePath;
this.packageName = packageName;
}
public void setIncludeClassFile(boolean include) {
this.includeClassFile = include;
}
public void setIncludeJavaFile(boolean include) {
this.includeJavaFile = include;
}
@Override
public void acceptSimpleResource(ResourceType type, String name) {
generator.addSimpleResource(type, name);
}
@Override
public void acceptPublicResource(ResourceType type, String name, Optional<Integer> value) {
generator.addPublicResource(type, name, value);
}
@Override
public void acceptStyleableResource(
FullyQualifiedName key, Map<FullyQualifiedName, Boolean> attrs) {
generator.addStyleableResource(key, attrs);
}
@Override
public void flush() throws IOException {
try {
FieldInitializers initializers = generator.build();
if (includeClassFile) {
writeAsClass(initializers);
}
if (includeJavaFile) {
writeAsJava(initializers);
}
} catch (AttrLookupException e) {
throw new IOException(e);
}
}
private void writeAsJava(FieldInitializers initializers) throws IOException {
RSourceGenerator.with(outputBasePath, initializers, /* finalFields= */ false)
.write(packageName);
}
private void writeAsClass(FieldInitializers initializers) throws IOException {
RClassGenerator.with(outputBasePath, initializers, /* finalFields= */ false).write(packageName);
}
}
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