| // 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.classmerging.vertical; |
| |
| import static com.android.tools.r8.utils.codeinspector.Matchers.isPresent; |
| import static org.hamcrest.CoreMatchers.not; |
| import static org.hamcrest.MatcherAssert.assertThat; |
| |
| import com.android.tools.r8.NeverInline; |
| import com.android.tools.r8.NoHorizontalClassMerging; |
| 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.CodeInspector; |
| import com.android.tools.r8.utils.codeinspector.VerticallyMergedClassesInspector; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| import org.junit.runners.Parameterized; |
| import org.junit.runners.Parameterized.Parameters; |
| |
| @RunWith(Parameterized.class) |
| public class ClassesHaveBeenMergedTest extends VerticalClassMergerTestBase { |
| |
| @Parameters(name = "{0}") |
| public static TestParametersCollection data() { |
| return TestBase.getTestParameters().withAllRuntimesAndApiLevels().build(); |
| } |
| |
| public ClassesHaveBeenMergedTest(TestParameters parameters) { |
| super(parameters); |
| } |
| |
| @Test |
| public void testClassesHaveBeenMerged() throws Exception { |
| testForR8(parameters.getBackend()) |
| .addInnerClasses(ClassesHaveBeenMergedTest.class) |
| .addKeepMainRule(TestClass.class) |
| .addVerticallyMergedClassesInspector(this::inspectVerticallyMergedClasses) |
| .enableInliningAnnotations() |
| .enableNoHorizontalClassMergingAnnotations() |
| .setMinApi(parameters.getApiLevel()) |
| .compile() |
| .inspect(this::inspect) |
| .run(parameters.getRuntime(), TestClass.class) |
| .assertSuccess(); |
| } |
| |
| private void inspectVerticallyMergedClasses(VerticallyMergedClassesInspector inspector) { |
| inspector.assertMergedIntoSubtype( |
| GenericInterface.class, |
| GenericAbstractClass.class, |
| Outer.SuperClass.class, |
| SuperClass.class); |
| } |
| |
| private void inspect(CodeInspector inspector) { |
| assertThat(inspector.clazz(GenericInterfaceImpl.class), isPresent()); |
| assertThat(inspector.clazz(Outer.SubClass.class), isPresent()); |
| assertThat(inspector.clazz(SubClass.class), isPresent()); |
| assertThat(inspector.clazz(GenericInterface.class), not(isPresent())); |
| assertThat(inspector.clazz(GenericAbstractClass.class), not(isPresent())); |
| assertThat(inspector.clazz(Outer.SuperClass.class), not(isPresent())); |
| assertThat(inspector.clazz(SuperClass.class), not(isPresent())); |
| } |
| |
| public static class TestClass { |
| |
| public static void main(String... args) { |
| GenericInterface<?> iface = new GenericInterfaceImpl(); |
| callMethodOnIface(iface); |
| GenericAbstractClass<?> clazz = new GenericAbstractClassImpl(); |
| callMethodOnAbstractClass(clazz); |
| Outer outer = new Outer(); |
| Outer.SubClass inner = outer.getInstance(); |
| System.out.println(outer.getInstance().method()); |
| System.out.println(new SubClass(42)); |
| |
| // Ensure that the instantiations are not dead code eliminated. |
| escape(clazz); |
| escape(iface); |
| escape(inner); |
| escape(outer); |
| } |
| |
| private static void callMethodOnIface(GenericInterface<?> iface) { |
| System.out.println(iface.method()); |
| } |
| |
| private static void callMethodOnAbstractClass(GenericAbstractClass<?> clazz) { |
| System.out.println(clazz.method()); |
| System.out.println(clazz.otherMethod()); |
| } |
| |
| @NeverInline |
| static void escape(Object o) { |
| if (System.currentTimeMillis() < 0) { |
| System.out.println(o); |
| } |
| } |
| } |
| |
| public abstract static class GenericAbstractClass<T> { |
| |
| public abstract T method(); |
| |
| public T otherMethod() { |
| return null; |
| } |
| } |
| |
| public static class GenericAbstractClassImpl extends GenericAbstractClass<String> { |
| |
| @Override |
| public String method() { |
| return "Hello from GenericAbstractClassImpl"; |
| } |
| |
| @Override |
| public String otherMethod() { |
| return "otherMethod"; |
| } |
| } |
| |
| public interface GenericInterface<T> { |
| |
| T method(); |
| } |
| |
| @NoHorizontalClassMerging |
| public static class GenericInterfaceImpl implements GenericInterface<String> { |
| |
| @Override |
| public String method() { |
| return "method"; |
| } |
| } |
| |
| public static class SuperClass { |
| |
| private final int field; |
| |
| public SuperClass(int field) { |
| this.field = field; |
| } |
| |
| public int getField() { |
| return field; |
| } |
| } |
| |
| public static class SubClass extends SuperClass { |
| |
| private int field; |
| |
| public SubClass(int field) { |
| this(field, field + 100); |
| } |
| |
| public SubClass(int one, int other) { |
| super(one); |
| field = other; |
| } |
| |
| public String toString() { |
| return "is " + field + " " + getField(); |
| } |
| } |
| |
| static class Outer { |
| |
| /** |
| * This class is package private to trigger the generation of bridge methods for the visibility |
| * change of methods from public subtypes. |
| */ |
| static class SuperClass { |
| |
| public String method() { |
| return "Method in SuperClass."; |
| } |
| } |
| |
| @NoHorizontalClassMerging |
| public static class SubClass extends SuperClass { |
| // Intentionally left empty. |
| } |
| |
| public SubClass getInstance() { |
| return new SubClass(); |
| } |
| } |
| } |