| // 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.resolution.virtualtargets; |
| |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertTrue; |
| import static org.junit.Assert.fail; |
| import static org.junit.Assume.assumeTrue; |
| |
| import com.android.tools.r8.CompilationFailedException; |
| import com.android.tools.r8.TestBase; |
| 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.DexMethod; |
| import com.android.tools.r8.graph.DexProgramClass; |
| import com.android.tools.r8.graph.LookupResult; |
| import com.android.tools.r8.graph.ResolutionResult; |
| import com.android.tools.r8.resolution.virtualtargets.package_a.A; |
| import com.android.tools.r8.shaking.AppInfoWithLiveness; |
| import com.android.tools.r8.utils.Box; |
| import com.android.tools.r8.utils.DescriptorUtils; |
| import com.google.common.collect.ImmutableSet; |
| import java.io.IOException; |
| import java.util.HashSet; |
| import java.util.Set; |
| import java.util.concurrent.ExecutionException; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| import org.junit.runners.Parameterized; |
| import org.junit.runners.Parameterized.Parameters; |
| import org.objectweb.asm.Opcodes; |
| |
| @RunWith(Parameterized.class) |
| public class PrivateOverrideOfVirtualTargetTest extends TestBase { |
| |
| private final TestParameters parameters; |
| private static final String[] EXPECTED = |
| new String[] {"A.foo", "A.bar", "B.foo", "A.bar", "B.bar"}; |
| |
| @Parameters(name = "{0}") |
| public static TestParametersCollection data() { |
| return getTestParameters().withAllRuntimesAndApiLevels().build(); |
| } |
| |
| public PrivateOverrideOfVirtualTargetTest(TestParameters parameters) { |
| this.parameters = parameters; |
| } |
| |
| @Test |
| public void testResolution() throws Exception { |
| assumeTrue(parameters.useRuntimeAsNoneRuntime()); |
| AppView<AppInfoWithLiveness> appView = |
| computeAppViewWithLiveness( |
| buildClasses(A.class, Main.class) |
| .addClassProgramData(getBWithModifiedInvokes()) |
| .build(), |
| Main.class); |
| AppInfoWithLiveness appInfo = appView.appInfo(); |
| DexMethod method = buildNullaryVoidMethod(A.class, "bar", appInfo.dexItemFactory()); |
| ResolutionResult resolutionResult = appInfo.resolveMethod(method.holder, method); |
| DexProgramClass context = |
| appView.definitionForProgramType(buildType(B.class, appInfo.dexItemFactory())); |
| LookupResult lookupResult = resolutionResult.lookupVirtualDispatchTargets(context, appInfo); |
| assertTrue(lookupResult.isLookupResultSuccess()); |
| Set<String> targets = new HashSet<>(); |
| lookupResult.forEach( |
| target -> targets.add(target.getMethod().qualifiedName()), lambda -> fail()); |
| ImmutableSet<String> expected = ImmutableSet.of(A.class.getTypeName() + ".bar"); |
| assertEquals(expected, targets); |
| } |
| |
| @Test |
| public void testRuntime() |
| throws NoSuchMethodException, IOException, CompilationFailedException, ExecutionException { |
| testForRuntime(parameters) |
| .addProgramClasses(A.class, Main.class) |
| .addProgramClassFileData(getBWithModifiedInvokes()) |
| .run(parameters.getRuntime(), Main.class) |
| .assertSuccessWithOutputLines(EXPECTED); |
| } |
| |
| @Test |
| public void testR8() |
| throws NoSuchMethodException, IOException, CompilationFailedException, ExecutionException { |
| testForR8(parameters.getBackend()) |
| .addProgramClasses(A.class, Main.class) |
| .addProgramClassFileData(getBWithModifiedInvokes()) |
| .setMinApi(parameters.getApiLevel()) |
| .addKeepMainRule(Main.class) |
| .run(parameters.getRuntime(), Main.class) |
| .assertSuccessWithOutputLines(EXPECTED); |
| } |
| |
| private byte[] getBWithModifiedInvokes() throws NoSuchMethodException, IOException { |
| Box<Boolean> modifyOwner = new Box<>(true); |
| return transformer(B.class) |
| .setPrivate(B.class.getDeclaredMethod("bar")) |
| .transformMethodInsnInMethod( |
| "callOnB", |
| (opcode, owner, name, descriptor, isInterface, continuation) -> { |
| if (name.equals("foo")) { |
| continuation.visitMethodInsn(opcode, owner, name, descriptor, isInterface); |
| return; |
| } |
| if (modifyOwner.get()) { |
| continuation.visitMethodInsn( |
| Opcodes.INVOKEVIRTUAL, |
| DescriptorUtils.getBinaryNameFromJavaType(A.class.getTypeName()), |
| name, |
| descriptor, |
| isInterface); |
| modifyOwner.set(false); |
| } else { |
| continuation.visitMethodInsn( |
| Opcodes.INVOKEVIRTUAL, owner, name, descriptor, isInterface); |
| } |
| }) |
| .transform(); |
| } |
| |
| public static class B extends A { |
| private void foo() { |
| System.out.println("B.foo"); |
| } |
| |
| @Override |
| protected /* private */ void bar() { |
| System.out.println("B.bar"); |
| } |
| |
| void callOnB() { |
| foo(); |
| bar(); /* will become A.bar() */ |
| bar(); /* will become B.bar() */ |
| } |
| } |
| |
| public static class Main { |
| |
| public static void main(String[] args) { |
| B b = new B(); |
| A.run(b); |
| b.callOnB(); |
| } |
| } |
| } |