| // 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.bridgeremoval.hoisting; |
| |
| import static com.android.tools.r8.utils.codeinspector.Matchers.isPresent; |
| import static org.hamcrest.MatcherAssert.assertThat; |
| |
| import com.android.tools.r8.NeverClassInline; |
| import com.android.tools.r8.NeverInline; |
| import com.android.tools.r8.NoVerticalClassMerging; |
| import com.android.tools.r8.TestBase; |
| import com.android.tools.r8.TestParameters; |
| import com.android.tools.r8.TestParametersCollection; |
| import com.android.tools.r8.utils.codeinspector.ClassSubject; |
| import com.android.tools.r8.utils.codeinspector.CodeInspector; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| import org.junit.runners.Parameterized; |
| |
| @RunWith(Parameterized.class) |
| public class KeptBridgeHoistingTest extends TestBase { |
| |
| private final TestParameters parameters; |
| |
| @Parameterized.Parameters(name = "{0}") |
| public static TestParametersCollection data() { |
| return getTestParameters().withAllRuntimesAndApiLevels().build(); |
| } |
| |
| public KeptBridgeHoistingTest(TestParameters parameters) { |
| this.parameters = parameters; |
| } |
| |
| @Test |
| public void test() throws Exception { |
| testForR8(parameters.getBackend()) |
| .addProgramClasses(TestClass.class, A.class) |
| .addProgramClassFileData( |
| transformer(B.class) |
| .setBridge(B.class.getDeclaredMethod("bridge", Object.class)) |
| .transform()) |
| .addKeepMainRule(TestClass.class) |
| .addKeepRules("-keep class " + B.class.getTypeName() + " { java.lang.String bridge(...); }") |
| .enableInliningAnnotations() |
| .enableNoVerticalClassMergingAnnotations() |
| .enableNeverClassInliningAnnotations() |
| // TODO(b/173398086): uniqueMethodWithName() does not work with signature changes. |
| .noMinification() |
| .setMinApi(parameters.getApiLevel()) |
| .compile() |
| .inspect(this::inspect) |
| .run(parameters.getRuntime(), TestClass.class) |
| .assertSuccessWithOutputLines("Hello world!"); |
| } |
| |
| private void inspect(CodeInspector inspector) { |
| ClassSubject aClassSubject = inspector.clazz(A.class); |
| assertThat(aClassSubject, isPresent()); |
| assertThat(aClassSubject.uniqueMethodWithName("m"), isPresent()); |
| |
| ClassSubject bClassSubject = inspector.clazz(B.class); |
| assertThat(bClassSubject, isPresent()); |
| assertThat(bClassSubject.uniqueMethodWithName("bridge"), isPresent()); |
| } |
| |
| static class TestClass { |
| |
| public static void main(String[] args) { |
| System.out.println(new B().bridge("Hello world!")); |
| } |
| } |
| |
| @NoVerticalClassMerging |
| static class A { |
| |
| @NeverInline |
| public Object m(String arg) { |
| return System.currentTimeMillis() >= 0 ? arg : null; |
| } |
| } |
| |
| @NeverClassInline |
| static class B extends A { |
| |
| // This bridge is kept by a Proguard configuration rule and must therefore not be hoisted to A. |
| @NeverInline |
| public /*bridge*/ String bridge(Object o) { |
| return (String) m((String) o); |
| } |
| } |
| } |