main.java.com.debughelper.tools.r8.PrintSeeds Maven / Gradle / Ivy
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// Copyright (c) 2018, the R8 project authors. Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.
package com.debughelper.tools.r8;
import com.debughelper.tools.r8.ArchiveClassFileProvider;
import com.debughelper.tools.r8.ClassFileConsumer;
import com.debughelper.tools.r8.PrintUses;
import com.debughelper.tools.r8.dex.ApplicationReader;
import com.debughelper.tools.r8.graph.AppInfoWithSubtyping;
import com.debughelper.tools.r8.graph.DexApplication;
import com.debughelper.tools.r8.shaking.Enqueuer;
import com.debughelper.tools.r8.shaking.RootSetBuilder;
import com.debughelper.tools.r8.shaking.RootSetBuilder.RootSet;
import com.debughelper.tools.r8.utils.ExceptionUtils;
import com.debughelper.tools.r8.utils.InternalOptions;
import com.debughelper.tools.r8.utils.ThreadUtils;
import com.debughelper.tools.r8.utils.Timing;
import java.io.IOException;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.Set;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.ExecutorService;
/**
* PrintSeeds prints the classes, interfaces, methods and fields selected by a given ProGuard
* configuration <pg-conf.txt> when compiling a given program <r8.jar> alongside a given
* library <rt.jar>.
*
* The output format is identical to what is printed when {@code -printseeds} is specified in
* <pg-conf.txt>, but running PrintSeeds can be faster than running R8 with {@code
* -printseeds}. See also the {@link com.debughelper.tools.r8.PrintUses} program in R8.
*/
public class PrintSeeds {
private static final String USAGE =
"Arguments: \n"
+ "\n"
+ "PrintSeeds prints the classes, interfaces, methods and fields selected by\n"
+ " when compiling alongside .\n"
+ "\n"
+ "The output format is identical to what is printed when -printseeds is specified in\n"
+ ", but running PrintSeeds can be faster than running R8 with \n"
+ "-printseeds. See also the "
+ PrintUses.class.getSimpleName()
+ " program in R8.";
public static void main(String[] args) throws Exception {
if (args.length != 3) {
System.out.println(USAGE.replace("\n", System.lineSeparator()));
System.exit(1);
}
Path rtJar = Paths.get(args[0]);
Path r8Jar = Paths.get(args[1]);
Path pgConf = Paths.get(args[2]);
R8Command command =
R8Command.builder()
.addLibraryFiles(rtJar)
.addProgramFiles(r8Jar)
.addProguardConfigurationFiles(pgConf)
.setProgramConsumer(ClassFileConsumer.emptyConsumer())
.build();
Set descriptors = new ArchiveClassFileProvider(r8Jar).getClassDescriptors();
InternalOptions options = command.getInternalOptions();
ExecutorService executorService = ThreadUtils.getExecutorService(options);
ExceptionUtils.withR8CompilationHandler(
command.getReporter(),
() -> {
try {
run(command, descriptors, options, executorService);
} finally {
executorService.shutdown();
}
});
}
private static void run(
R8Command command, Set descriptors, InternalOptions options, ExecutorService executor)
throws IOException {
Timing timing = new Timing("PrintSeeds");
try {
DexApplication application =
new ApplicationReader(command.getInputApp(), options, timing).read(executor).toDirect();
AppInfoWithSubtyping appInfo = new AppInfoWithSubtyping(application);
RootSet rootSet =
new RootSetBuilder(
appInfo, application, options.proguardConfiguration.getRules(), options)
.run(executor);
Enqueuer enqueuer = new Enqueuer(appInfo, options, false);
appInfo = enqueuer.traceApplication(rootSet, executor, timing);
RootSetBuilder.writeSeeds(
appInfo.withLiveness(),
System.out,
type -> descriptors.contains(type.toDescriptorString()));
} catch (ExecutionException e) {
R8.unwrapExecutionException(e);
throw new AssertionError(e); // unwrapping method should have thrown
}
}
}