| // Copyright (c) 2022, 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.vertical; |
| |
| import static com.android.tools.r8.utils.codeinspector.Matchers.isPresentAndRenamed; |
| import static org.hamcrest.MatcherAssert.assertThat; |
| import static org.junit.Assert.assertEquals; |
| |
| import com.android.tools.r8.KeepConstantArguments; |
| import com.android.tools.r8.NeverInline; |
| import com.android.tools.r8.NoMethodStaticizing; |
| 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.MethodSubject; |
| import java.lang.reflect.TypeVariable; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| import org.junit.runners.Parameterized; |
| import org.junit.runners.Parameterized.Parameter; |
| import org.junit.runners.Parameterized.Parameters; |
| |
| @RunWith(Parameterized.class) |
| public class VerticalClassMergingWithMissingTypeArgsSubstitutionTest extends TestBase { |
| |
| @Parameter(0) |
| public TestParameters parameters; |
| |
| @Parameters(name = "{0}") |
| public static TestParametersCollection data() { |
| return getTestParameters().withAllRuntimesAndApiLevels().build(); |
| } |
| |
| @Test() |
| public void test() throws Exception { |
| testForR8Compat(parameters.getBackend()) |
| .addInnerClasses(getClass()) |
| .addKeepMainRule(Main.class) |
| .addKeepClassRules(A.class) |
| .addKeepAttributeSignature() |
| .addVerticallyMergedClassesInspector( |
| inspector -> inspector.assertMergedIntoSubtype(B.class)) |
| .enableInliningAnnotations() |
| .enableNoMethodStaticizingAnnotations() |
| .enableConstantArgumentAnnotations() |
| .setMinApi(parameters.getApiLevel()) |
| .run(parameters.getRuntime(), Main.class) |
| .assertSuccessWithOutputLines("T", "Hello World") |
| .inspect( |
| inspector -> { |
| ClassSubject classSubject = inspector.clazz(C.class); |
| assertThat(classSubject, isPresentAndRenamed()); |
| assertEquals( |
| "<T:Ljava/lang/Object;>L" + binaryName(A.class) + "<Ljava/lang/Object;>;", |
| classSubject.getFinalSignatureAttribute()); |
| MethodSubject bar = classSubject.uniqueMethodWithName("bar"); |
| assertThat(bar, isPresentAndRenamed()); |
| assertEquals("(TT;)V", bar.getFinalSignatureAttribute()); |
| // The NeverInline is transferred to the private vertically merged method, making |
| // it hard to lookup. |
| MethodSubject movedFooSubject = |
| classSubject.uniqueMethodThatMatches( |
| method -> |
| method.getMethod().getReference() != bar.getMethod().getReference() |
| && !method.isInstanceInitializer()); |
| assertThat(movedFooSubject, isPresentAndRenamed()); |
| assertEquals( |
| "(Ljava/lang/Object;)Ljava/lang/Object;", |
| movedFooSubject.getFinalSignatureAttribute()); |
| }); |
| } |
| |
| static class Main { |
| |
| public static void main(String[] args) { |
| C<String> stringC = new C<>(); |
| for (TypeVariable<? extends Class<? extends C>> typeParameter : |
| stringC.getClass().getTypeParameters()) { |
| System.out.println(typeParameter.getName()); |
| } |
| stringC.bar("Hello World"); |
| } |
| } |
| |
| static class A<T> {} |
| |
| static class B<T> extends A<T> { |
| |
| @KeepConstantArguments |
| @NoMethodStaticizing |
| @NeverInline |
| public T foo(T t) { |
| if (System.currentTimeMillis() == 0) { |
| throw new RuntimeException("Foo"); |
| } |
| return t; |
| } |
| } |
| |
| static class C<T> extends B { |
| |
| @NoMethodStaticizing |
| @KeepConstantArguments |
| @NeverInline |
| void bar(T t) { |
| System.out.println(foo(t)); |
| } |
| } |
| } |