| // 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.keepanno; |
| |
| import static com.android.tools.r8.utils.codeinspector.Matchers.isAbsent; |
| import static com.android.tools.r8.utils.codeinspector.Matchers.isPresent; |
| import static org.hamcrest.MatcherAssert.assertThat; |
| |
| import com.android.tools.r8.TestBase; |
| import com.android.tools.r8.TestParameters; |
| import com.android.tools.r8.TestParametersCollection; |
| import com.android.tools.r8.keepanno.annotations.KeepBinding; |
| import com.android.tools.r8.keepanno.annotations.KeepCondition; |
| import com.android.tools.r8.keepanno.annotations.KeepEdge; |
| import com.android.tools.r8.keepanno.annotations.KeepTarget; |
| import com.android.tools.r8.utils.AndroidApiLevel; |
| import com.android.tools.r8.utils.StringUtils; |
| import com.android.tools.r8.utils.codeinspector.CodeInspector; |
| import com.google.common.collect.ImmutableList; |
| import java.util.ArrayList; |
| import java.util.List; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| import org.junit.runners.Parameterized; |
| |
| @RunWith(Parameterized.class) |
| public class KeepFooIfBarSameClassTest extends TestBase { |
| |
| static final String EXPECTED = StringUtils.lines("A::foo"); |
| |
| private final TestParameters parameters; |
| |
| @Parameterized.Parameters(name = "{0}") |
| public static TestParametersCollection data() { |
| return getTestParameters().withDefaultRuntimes().withApiLevel(AndroidApiLevel.B).build(); |
| } |
| |
| public KeepFooIfBarSameClassTest(TestParameters parameters) { |
| this.parameters = parameters; |
| } |
| |
| @Test |
| public void testReference() throws Exception { |
| testForRuntime(parameters) |
| .addProgramClasses(getInputClasses()) |
| .run(parameters.getRuntime(), TestClass.class) |
| .assertSuccessWithOutput(EXPECTED); |
| } |
| |
| @Test |
| public void testWithRuleExtraction() throws Exception { |
| List<String> rules = getExtractedKeepRules(); |
| testForR8(parameters.getBackend()) |
| .addProgramClassFileData(getInputClassesWithoutAnnotations()) |
| .addKeepRules(rules) |
| .addKeepMainRule(TestClass.class) |
| .setMinApi(parameters.getApiLevel()) |
| .run(parameters.getRuntime(), TestClass.class) |
| .assertSuccessWithOutput(EXPECTED) |
| .inspect(this::checkOutput); |
| } |
| |
| public List<Class<?>> getInputClasses() { |
| return ImmutableList.of(TestClass.class, A.class, B.class); |
| } |
| |
| public List<byte[]> getInputClassesWithoutAnnotations() throws Exception { |
| return KeepEdgeAnnotationsTest.getInputClassesWithoutKeepAnnotations(getInputClasses()); |
| } |
| |
| public List<String> getExtractedKeepRules() throws Exception { |
| List<Class<?>> classes = getInputClasses(); |
| List<String> rules = new ArrayList<>(); |
| for (Class<?> clazz : classes) { |
| rules.addAll(KeepEdgeAnnotationsTest.getKeepRulesForClass(clazz)); |
| } |
| return rules; |
| } |
| |
| private void checkOutput(CodeInspector inspector) { |
| assertThat(inspector.clazz(A.class), isPresent()); |
| assertThat(inspector.clazz(A.class).uniqueMethodWithOriginalName("foo"), isPresent()); |
| assertThat(inspector.clazz(B.class), isPresent()); |
| assertThat(inspector.clazz(B.class).uniqueMethodWithOriginalName("foo"), isAbsent()); |
| assertThat(inspector.clazz(B.class).uniqueMethodWithOriginalName("bar"), isAbsent()); |
| // TODO(b/248408342): R8 full is keeping the default constructor. Avoid that. |
| assertThat(inspector.clazz(B.class).uniqueInstanceInitializer(), isPresent()); |
| } |
| |
| @KeepEdge(consequences = {@KeepTarget(classConstant = A.class)}) |
| static class A { |
| public void foo() throws Exception { |
| System.out.println("A::foo"); |
| } |
| |
| public void bar() throws Exception { |
| getClass().getDeclaredMethod("foo").invoke(this); |
| } |
| } |
| |
| @KeepEdge(consequences = {@KeepTarget(classConstant = B.class)}) |
| static class B { |
| public void foo() throws Exception { |
| System.out.println("B::foo"); |
| } |
| |
| public void bar() throws Exception { |
| getClass().getDeclaredMethod("foo").invoke(this); |
| } |
| } |
| |
| /** |
| * This conditional rule expresses that if any class in the program has a live "bar" method then |
| * that same classes "foo" method is to be kept. The binding establishes the relation between the |
| * holder of the two methods. |
| */ |
| @KeepEdge( |
| bindings = {@KeepBinding(bindingName = "Holder")}, |
| preconditions = {@KeepCondition(classFromBinding = "Holder", methodName = "bar")}, |
| consequences = {@KeepTarget(classFromBinding = "Holder", methodName = "foo")}) |
| static class TestClass { |
| |
| public static void main(String[] args) throws Exception { |
| new A().bar(); |
| } |
| } |
| } |