| // 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.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.utils.BooleanUtils; |
| import com.android.tools.r8.utils.codeinspector.ClassSubject; |
| import java.util.List; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| import org.junit.runners.Parameterized; |
| |
| @RunWith(Parameterized.class) |
| public class CollisionWithDefaultMethodOutsideMergeGroupAfterSubclassMergingTest extends TestBase { |
| |
| private final boolean enableInterfaceMergingInInitial; |
| private final TestParameters parameters; |
| |
| @Parameterized.Parameters(name = "{1}, enableInterfaceMergingInInitial: {0}") |
| public static List<Object[]> data() { |
| return buildParameters( |
| BooleanUtils.values(), getTestParameters().withAllRuntimesAndApiLevels().build()); |
| } |
| |
| public CollisionWithDefaultMethodOutsideMergeGroupAfterSubclassMergingTest( |
| boolean enableInterfaceMergingInInitial, TestParameters parameters) { |
| this.enableInterfaceMergingInInitial = enableInterfaceMergingInInitial; |
| 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 the merging of class B into class A |
| // contributes the default method K.m() to A, and the merging of J into I would contribute |
| // the default method J.m() to A. |
| .addHorizontallyMergedClassesInspector( |
| inspector -> { |
| inspector |
| .assertIsCompleteMergeGroup(A.class, B.class) |
| .assertMergedInto(B.class, A.class); |
| if (parameters.canUseDefaultAndStaticInterfaceMethods()) { |
| inspector.assertClassesNotMerged(I.class, J.class, K.class); |
| } else { |
| inspector |
| .assertIsCompleteMergeGroup(I.class, J.class) |
| .assertClassesNotMerged(K.class); |
| } |
| }) |
| .addOptionsModification( |
| options -> { |
| if (enableInterfaceMergingInInitial) { |
| options.horizontalClassMergerOptions().setEnableInterfaceMergingInInitial(); |
| } |
| }) |
| .enableInliningAnnotations() |
| .enableNeverClassInliningAnnotations() |
| .enableNoHorizontalClassMergingAnnotations() |
| .enableNoUnusedInterfaceRemovalAnnotations() |
| .enableNoVerticalClassMergingAnnotations() |
| .setMinApi(parameters.getApiLevel()) |
| .compile() |
| .inspect( |
| inspector -> { |
| ClassSubject aClassSubject = inspector.clazz(A.class); |
| assertThat(aClassSubject, isPresent()); |
| assertThat(aClassSubject, isImplementing(inspector.clazz(I.class))); |
| assertThat(aClassSubject, isImplementing(inspector.clazz(K.class))); |
| |
| ClassSubject cClassSubject = inspector.clazz(C.class); |
| assertThat(cClassSubject, isPresent()); |
| assertThat( |
| cClassSubject, |
| isImplementing( |
| inspector.clazz( |
| parameters.canUseDefaultAndStaticInterfaceMethods() |
| ? J.class |
| : I.class))); |
| }) |
| .run(parameters.getRuntime(), Main.class) |
| .assertSuccessWithOutputLines("A", "K", "J"); |
| } |
| |
| static class Main { |
| |
| public static void main(String[] args) { |
| new A().keepA(); |
| new B().m(); |
| new C().m(); |
| } |
| } |
| |
| @NoUnusedInterfaceRemoval |
| @NoVerticalClassMerging |
| interface I {} |
| |
| @NoUnusedInterfaceRemoval |
| @NoVerticalClassMerging |
| interface J { |
| @NeverInline |
| default void m() { |
| System.out.println("J"); |
| } |
| } |
| |
| @NoHorizontalClassMerging |
| @NoUnusedInterfaceRemoval |
| @NoVerticalClassMerging |
| interface K { |
| @NeverInline |
| default void m() { |
| System.out.println("K"); |
| } |
| } |
| |
| @NeverClassInline |
| static class A implements I { |
| @NeverInline |
| void keepA() { |
| System.out.println("A"); |
| } |
| } |
| |
| // Will be merged into A, which as a side effect contributes the default method K.m() to A. |
| // This should prevent merging of J into I, since that would contribute the default method J.m() |
| // to A. |
| @NeverClassInline |
| static class B implements K {} |
| |
| @NeverClassInline |
| @NoHorizontalClassMerging |
| static class C implements J {} |
| } |