| // Copyright (c) 2019, 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.resolution; |
| |
| import static com.android.tools.r8.ToolHelper.getMostRecentAndroidJar; |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertFalse; |
| |
| import com.android.tools.r8.AsmTestBase; |
| import com.android.tools.r8.TestParameters; |
| import com.android.tools.r8.TestParametersCollection; |
| import com.android.tools.r8.graph.AppView; |
| import com.android.tools.r8.graph.DexEncodedMethod; |
| import com.android.tools.r8.graph.DexMethod; |
| import com.android.tools.r8.graph.DexProgramClass; |
| import com.android.tools.r8.graph.MethodResolutionResult; |
| import com.android.tools.r8.graph.ProgramMethod; |
| import com.android.tools.r8.shaking.AppInfoWithLiveness; |
| import com.google.common.collect.ImmutableList; |
| import java.util.List; |
| import org.junit.Assert; |
| import org.junit.BeforeClass; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| import org.junit.runners.Parameterized; |
| import org.junit.runners.Parameterized.Parameters; |
| import org.objectweb.asm.ClassWriter; |
| import org.objectweb.asm.MethodVisitor; |
| import org.objectweb.asm.Opcodes; |
| |
| @RunWith(Parameterized.class) |
| public class VirtualOverrideOfStaticMethodWithVirtualParentInterfaceTest extends AsmTestBase { |
| |
| public interface A { |
| default void f() {} |
| } |
| |
| public interface B extends A { |
| // Made static using ASM. |
| /*static*/ default void f() {} |
| } |
| |
| public static class C implements B { |
| public void f() { |
| System.out.println("Called C.f"); |
| } |
| } |
| |
| public static class Main { |
| |
| public static void main(String[] args) { |
| B b = new C(); |
| b.f(); |
| } |
| } |
| |
| public static class BDump implements Opcodes { |
| |
| static String prefix(String suffix) { |
| return VirtualOverrideOfStaticMethodWithVirtualParentInterfaceTest.class |
| .getTypeName() |
| .replace('.', '/') |
| + suffix; |
| } |
| |
| public static byte[] dump() { |
| ClassWriter cw = new ClassWriter(0); |
| cw.visit( |
| V1_8, |
| ACC_PUBLIC | ACC_ABSTRACT | ACC_INTERFACE, |
| prefix("$B"), |
| null, |
| "java/lang/Object", |
| null); |
| { |
| // Added ACC_STATIC |
| MethodVisitor mv = cw.visitMethod(ACC_PUBLIC | ACC_STATIC, "f", "()V", null, null); |
| mv.visitCode(); |
| mv.visitInsn(RETURN); |
| mv.visitMaxs(0, 1); |
| mv.visitEnd(); |
| } |
| cw.visitEnd(); |
| return cw.toByteArray(); |
| } |
| } |
| |
| public static List<Class<?>> CLASSES = ImmutableList.of(A.class, C.class, Main.class); |
| |
| public static byte[] DUMP = BDump.dump(); |
| |
| private static AppView<AppInfoWithLiveness> appView; |
| private static AppInfoWithLiveness appInfo; |
| |
| @BeforeClass |
| public static void computeAppInfo() throws Exception { |
| appView = |
| computeAppViewWithLiveness( |
| buildClasses(CLASSES) |
| .addClassProgramData(DUMP) |
| .addLibraryFile(getMostRecentAndroidJar()) |
| .build(), |
| Main.class); |
| appInfo = appView.appInfo(); |
| } |
| |
| private static DexMethod buildMethod(Class clazz, String name) { |
| return buildNullaryVoidMethod(clazz, name, appView.dexItemFactory()); |
| } |
| |
| @Parameters(name = "{0}") |
| public static TestParametersCollection data() { |
| return getTestParameters().withAllRuntimes().withAllApiLevels().build(); |
| } |
| |
| private final TestParameters parameters; |
| private final DexMethod methodOnAReference = buildMethod(A.class, "f"); |
| private final DexMethod methodOnBReference = buildMethod(B.class, "f"); |
| private final DexMethod methodOnCReference = buildMethod(C.class, "f"); |
| |
| public VirtualOverrideOfStaticMethodWithVirtualParentInterfaceTest(TestParameters parameters) { |
| this.parameters = parameters; |
| } |
| |
| @Test |
| public void lookupSingleTarget() { |
| DexProgramClass bClass = appInfo.definitionForProgramType(methodOnBReference.holder); |
| ProgramMethod methodOnB = bClass.lookupProgramMethod(methodOnBReference); |
| MethodResolutionResult resolutionResult = |
| appInfo.resolveMethodOnInterfaceLegacy(methodOnBReference.holder, methodOnBReference); |
| DexEncodedMethod resolved = resolutionResult.getSingleTarget(); |
| assertEquals(methodOnBReference, resolved.getReference()); |
| assertFalse(resolutionResult.isVirtualTarget()); |
| DexEncodedMethod singleVirtualTarget = |
| appInfo.lookupSingleVirtualTarget(appView, methodOnBReference, methodOnB, false); |
| Assert.assertNull(singleVirtualTarget); |
| } |
| |
| @Test |
| public void lookupVirtualTargets() { |
| MethodResolutionResult resolutionResult = |
| appInfo.resolveMethodOnInterfaceLegacy(methodOnBReference.holder, methodOnBReference); |
| DexEncodedMethod resolved = resolutionResult.getSingleTarget(); |
| assertEquals(methodOnBReference, resolved.getReference()); |
| assertFalse(resolutionResult.isVirtualTarget()); |
| } |
| |
| @Test |
| public void runJvmAndD8() throws Exception { |
| testForRuntime(parameters) |
| .addProgramClasses(CLASSES) |
| .addProgramClassFileData(DUMP) |
| .run(parameters.getRuntime(), Main.class) |
| .assertFailureWithErrorThatThrows(IncompatibleClassChangeError.class); |
| } |
| |
| @Test |
| public void runR8() throws Exception { |
| runR8(true); |
| } |
| |
| @Test |
| public void runR8NoMerging() throws Exception { |
| runR8(false); |
| } |
| |
| public void runR8(boolean enableVerticalClassMerging) throws Exception { |
| testForR8(parameters.getBackend()) |
| .addProgramClasses(CLASSES) |
| .addProgramClassFileData(DUMP) |
| .addKeepMainRule(Main.class) |
| .setMinApi(parameters) |
| .addOptionsModification(o -> o.enableVerticalClassMerging = enableVerticalClassMerging) |
| .run(parameters.getRuntime(), Main.class) |
| .assertFailureWithErrorThatThrows(IncompatibleClassChangeError.class); |
| } |
| } |