| // 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.shaking.modifiers; |
| |
| import static com.android.tools.r8.utils.codeinspector.Matchers.isPresent; |
| import static org.hamcrest.CoreMatchers.not; |
| import static org.hamcrest.MatcherAssert.assertThat; |
| import static org.junit.Assert.assertEquals; |
| |
| import com.android.tools.r8.TestBase; |
| import com.android.tools.r8.utils.codeinspector.ClassSubject; |
| import com.google.common.collect.ImmutableList; |
| import java.util.List; |
| import java.util.function.Consumer; |
| import org.junit.Test; |
| |
| public class SyntheticAndBridgeModifiersTest extends TestBase { |
| |
| static final List<Class<?>> CLASSES = ImmutableList.of( |
| SyntheticAndBridgeModifiersTestClass.class, |
| SyntheticAndBridgeModifiersTestClass.Super.class, |
| SyntheticAndBridgeModifiersTestClass.TestClass.class); |
| |
| private void runTest(String keepRules, Consumer<ClassSubject> classConsumer) throws Exception { |
| testForProguard() |
| .addProgramClasses(CLASSES) |
| .addKeepRules(keepRules) |
| .noMinification() |
| .compile() |
| .disassemble() |
| .inspect(inspector -> { |
| ClassSubject clazz = |
| inspector.clazz(SyntheticAndBridgeModifiersTestClass.TestClass.class); |
| assertThat(clazz, isPresent()); |
| classConsumer.accept(clazz); |
| }); |
| |
| testForR8(Backend.DEX) |
| .addProgramClasses(CLASSES) |
| .addKeepRules(keepRules) |
| .noMinification() |
| .compile() |
| .disassemble() |
| .inspect(inspector -> { |
| ClassSubject clazz = |
| inspector.clazz(SyntheticAndBridgeModifiersTestClass.TestClass.class); |
| assertThat(clazz, isPresent()); |
| classConsumer.accept(clazz); |
| }); |
| } |
| |
| private long methodsWithNameStartingWith(ClassSubject clazz, String prefix) { |
| return clazz |
| .allMethods() |
| .stream() |
| .filter(method -> method.getOriginalName().startsWith(prefix)) |
| .count(); |
| } |
| |
| @Test |
| public void testBridgeNotKept() throws Exception { |
| runTest( |
| "-keep class **TestClass$TestClass { java.lang.String x(); }", |
| clazz -> { |
| assertThat(clazz.method("java.lang.Object", "x", ImmutableList.of()), not(isPresent())); |
| assertThat(clazz.method("java.lang.String", "x", ImmutableList.of()), isPresent()); |
| }); |
| } |
| |
| @Test |
| public void testBridgeKept() throws Exception { |
| runTest( |
| "-keep class **TestClass$TestClass { bridge ** x(); }", |
| clazz -> |
| assertThat(clazz.method("java.lang.Object", "x", ImmutableList.of()), isPresent())); |
| } |
| |
| @Test |
| public void testSyntheticFieldNotKept() throws Exception { |
| runTest( |
| "-keep class **TestClass$TestClass { java.lang.String x(); }", |
| clazz -> assertEquals(0, clazz.allFields().size())); |
| } |
| |
| @Test |
| public void testSyntheticFieldKept() throws Exception { |
| runTest( |
| "-keep class **TestClass$TestClass { synthetic ** this*; }", |
| clazz -> assertEquals(1, clazz.allFields().size())); |
| } |
| |
| @Test |
| public void testSyntheticAccessorNotKept() throws Exception { |
| runTest( |
| "-keep class **TestClass$TestClass { java.lang.String x(); }", |
| clazz -> assertEquals(0, methodsWithNameStartingWith(clazz, "access"))); |
| } |
| |
| @Test |
| public void testSyntheticAccessorKept() throws Exception { |
| runTest( |
| "-keep class **TestClass$TestClass { static synthetic *; }", |
| clazz -> assertEquals(1, methodsWithNameStartingWith(clazz, "access"))); |
| } |
| } |
| |
| class SyntheticAndBridgeModifiersTestClass { |
| class Super { |
| Object x() { |
| return null; |
| } |
| } |
| |
| // Non static inner classes will have a synthetic field for the outer instance (javac |
| // named this$X). |
| class TestClass extends Super { |
| // This will have a synthetic static accessor (javac named access$XXX). |
| private void test() { |
| |
| } |
| |
| // javac will create a forwarding bridge with signature 'Object x()'. |
| String x() { |
| return null; |
| } |
| } |
| |
| void accessPrivate() { |
| new TestClass().test(); |
| } |
| } |