| // Copyright (c) 2020, 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.android.tools.r8.ir.optimize.reflection; |
| |
| import com.android.tools.r8.NeverInline; |
| import com.android.tools.r8.TestBase; |
| import com.android.tools.r8.TestParameters; |
| import com.android.tools.r8.TestParametersCollection; |
| import com.android.tools.r8.utils.StringUtils; |
| import java.util.concurrent.Callable; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| import org.junit.runners.Parameterized; |
| |
| @RunWith(Parameterized.class) |
| public class GetClassOnKeptClassTest extends TestBase { |
| |
| static final String EXPECTED = |
| StringUtils.lines( |
| "class " + KeptClass.class.getTypeName(), |
| "class " + KeptClass.class.getTypeName(), |
| "class " + UnknownClass.class.getTypeName(), |
| "class " + UnknownClass.class.getTypeName()); |
| |
| private final TestParameters parameters; |
| |
| @Parameterized.Parameters(name = "{0}") |
| public static TestParametersCollection data() { |
| return getTestParameters().withAllRuntimes().withAllApiLevels().build(); |
| } |
| |
| public GetClassOnKeptClassTest(TestParameters parameters) { |
| this.parameters = parameters; |
| } |
| |
| @Test |
| public void testReference() throws Exception { |
| testForRuntime(parameters) |
| .addProgramClasses(KeptClass.class, UnknownClass.class, TestClass.class) |
| .run(parameters.getRuntime(), TestClass.class) |
| .assertSuccessWithOutput(EXPECTED); |
| } |
| |
| @Test |
| public void testR8() throws Exception { |
| testForR8(parameters.getBackend()) |
| .enableInliningAnnotations() |
| .addProgramClasses(KeptClass.class, TestClass.class) |
| .addKeepMainRule(TestClass.class) |
| .addKeepClassRules(KeptClass.class) |
| .setMinApi(parameters.getApiLevel()) |
| .compile() |
| .addRunClasspathFiles(buildOnDexRuntime(parameters, UnknownClass.class)) |
| .run(parameters.getRuntime(), TestClass.class) |
| .assertSuccessWithOutput(EXPECTED); |
| } |
| |
| static class KeptClass implements Callable<Class<?>> { |
| @NeverInline |
| static Class<?> getClassMethod(KeptClass instance) { |
| // Nullable argument. Should not be rewritten to const-class to preserve NPE. |
| return instance.getClass(); |
| } |
| |
| @NeverInline |
| @Override |
| public Class<?> call() { |
| // Non-null `this` pointer. |
| return getClass(); |
| } |
| } |
| |
| static class UnknownClass extends KeptClass { |
| // Empty subtype of KeptClass. |
| } |
| |
| static class TestClass { |
| |
| static KeptClass getInstance(int i) throws Exception { |
| return i == 0 |
| ? new KeptClass() |
| : (KeptClass) |
| Class.forName(TestClass.class.getName().replace("TestClass", "UnknownClass")) |
| .getDeclaredConstructor() |
| .newInstance(); |
| } |
| |
| public static void main(String[] args) throws Exception { |
| for (int i = 0; i < 2; i++) { |
| KeptClass instance = getInstance(args.length + i); |
| System.out.println(instance.call()); |
| System.out.println(KeptClass.getClassMethod(instance)); |
| } |
| } |
| } |
| } |