| // Copyright (c) 2021, 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.classmerging.horizontal.interfaces; |
| |
| import static com.android.tools.r8.utils.codeinspector.Matchers.isAbsent; |
| import static com.android.tools.r8.utils.codeinspector.Matchers.isImplementing; |
| 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.NoHorizontalClassMerging; |
| import com.android.tools.r8.NoUnusedInterfaceRemoval; |
| 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.HorizontallyMergedClassesInspector; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| import org.junit.runners.Parameterized; |
| |
| @RunWith(Parameterized.class) |
| public class NoDefaultMethodMergingTest extends TestBase { |
| |
| private final TestParameters parameters; |
| |
| @Parameterized.Parameters(name = "{0}") |
| public static TestParametersCollection data() { |
| return getTestParameters().withAllRuntimesAndApiLevels().build(); |
| } |
| |
| public NoDefaultMethodMergingTest(TestParameters parameters) { |
| this.parameters = parameters; |
| } |
| |
| @Test |
| public void test() throws Exception { |
| testForR8(parameters.getBackend()) |
| .addInnerClasses(getClass()) |
| .addKeepMainRule(Main.class) |
| // I and J are not eligible for merging, since they declare the same default method. |
| .addHorizontallyMergedClassesInspector( |
| HorizontallyMergedClassesInspector::assertNoClassesMerged) |
| .enableInliningAnnotations() |
| .enableNeverClassInliningAnnotations() |
| .enableNoHorizontalClassMergingAnnotations() |
| .enableNoUnusedInterfaceRemovalAnnotations() |
| .enableNoVerticalClassMergingAnnotations() |
| .setMinApi(parameters.getApiLevel()) |
| .compile() |
| .inspect( |
| inspector -> { |
| ClassSubject aClassSubject = inspector.clazz(A.class); |
| ClassSubject bClassSubject = inspector.clazz(B.class); |
| if (!parameters.canUseDefaultAndStaticInterfaceMethods()) { |
| // When desugaring, the forwarding methods to the CC.m methods will be inlined and |
| // the class instances become dead code. |
| assertThat(aClassSubject, isAbsent()); |
| assertThat(bClassSubject, isAbsent()); |
| return; |
| } |
| assertThat(aClassSubject, isPresent()); |
| assertThat(aClassSubject, isImplementing(inspector.clazz(I.class))); |
| |
| assertThat(bClassSubject, isPresent()); |
| assertThat( |
| bClassSubject, |
| isImplementing( |
| inspector.clazz( |
| parameters.canUseDefaultAndStaticInterfaceMethods() |
| ? J.class |
| : I.class))); |
| }) |
| .run(parameters.getRuntime(), Main.class) |
| .assertSuccessWithOutputLines("I", "J"); |
| } |
| |
| static class Main { |
| |
| public static void main(String[] args) { |
| new A().m(); |
| new B().m(); |
| } |
| } |
| |
| @NoUnusedInterfaceRemoval |
| @NoVerticalClassMerging |
| interface I { |
| @NeverInline |
| default void m() { |
| System.out.println("I"); |
| } |
| } |
| |
| @NoUnusedInterfaceRemoval |
| @NoVerticalClassMerging |
| interface J { |
| @NeverInline |
| default void m() { |
| System.out.println("J"); |
| } |
| } |
| |
| @NeverClassInline |
| @NoHorizontalClassMerging |
| static class A implements I {} |
| |
| @NeverClassInline |
| @NoHorizontalClassMerging |
| static class B implements J {} |
| } |