| // Copyright (c) 2018, 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.ir.optimize.uninstantiatedtypes; |
| |
| import static com.android.tools.r8.utils.codeinspector.Matchers.isPresent; |
| import static org.hamcrest.MatcherAssert.assertThat; |
| import static org.hamcrest.core.IsNot.not; |
| import static org.junit.Assert.assertEquals; |
| |
| import com.android.tools.r8.NeverInline; |
| import com.android.tools.r8.NeverMerge; |
| import com.android.tools.r8.TestBase; |
| import com.android.tools.r8.ToolHelper; |
| import com.android.tools.r8.graph.DexMethod; |
| import com.android.tools.r8.utils.StringUtils; |
| import com.android.tools.r8.utils.codeinspector.ClassSubject; |
| import com.android.tools.r8.utils.codeinspector.CodeInspector; |
| import com.android.tools.r8.utils.codeinspector.MethodSubject; |
| 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 ParameterRewritingTest extends TestBase { |
| |
| private final Backend backend; |
| |
| @Parameters(name = "Backend: {0}") |
| public static Backend[] data() { |
| return ToolHelper.getBackends(); |
| } |
| |
| public ParameterRewritingTest(Backend backend) { |
| this.backend = backend; |
| } |
| |
| @Test |
| public void test() throws Exception { |
| String expected = |
| StringUtils.lines( |
| "Factory.createStatic() -> null", |
| "Factory.createStaticWithUnused1() -> null", |
| "Factory.createStaticWithUnused2() -> null", |
| "Factory.createStaticWithUnused3() -> null", |
| "Factory.createStaticWithUnused4() -> null"); |
| |
| testForJvm().addTestClasspath().run(TestClass.class).assertSuccessWithOutput(expected); |
| |
| CodeInspector inspector = |
| testForR8(backend) |
| .addInnerClasses(ParameterRewritingTest.class) |
| .addKeepMainRule(TestClass.class) |
| .enableInliningAnnotations() |
| .enableMergeAnnotations() |
| .addKeepRules("-dontobfuscate") |
| .addOptionsModification(options -> options.enableClassInlining = false) |
| .run(TestClass.class) |
| .assertSuccessWithOutput(expected) |
| .inspector(); |
| |
| ClassSubject factoryClassSubject = inspector.clazz(Factory.class); |
| MethodSubject createStaticMethodSubject = |
| factoryClassSubject.uniqueMethodWithName("createStatic"); |
| assertThat(createStaticMethodSubject, isPresent()); |
| assertEquals(1, createStaticMethodSubject.getMethod().method.proto.parameters.size()); |
| |
| for (int i = 1; i <= 3; ++i) { |
| String createStaticWithUnusedMethodName = "createStaticWithUnused" + i; |
| MethodSubject createStaticWithUnusedMethodSubject = |
| factoryClassSubject.uniqueMethodWithName(createStaticWithUnusedMethodName); |
| assertThat(createStaticWithUnusedMethodSubject, isPresent()); |
| |
| DexMethod method = createStaticWithUnusedMethodSubject.getMethod().method; |
| assertEquals(1, method.proto.parameters.size()); |
| assertEquals("java.lang.String", method.proto.parameters.toString()); |
| } |
| |
| MethodSubject createStaticWithUnusedMethodSubject = |
| factoryClassSubject.uniqueMethodWithName("createStaticWithUnused4"); |
| assertThat(createStaticWithUnusedMethodSubject, isPresent()); |
| |
| DexMethod method = createStaticWithUnusedMethodSubject.getMethod().method; |
| assertEquals(3, method.proto.parameters.size()); |
| assertEquals( |
| "java.lang.String java.lang.String java.lang.String", method.proto.parameters.toString()); |
| |
| assertThat(inspector.clazz(Uninstantiated.class), not(isPresent())); |
| } |
| |
| static class TestClass { |
| |
| public static void main(String[] args) { |
| Object obj1 = Factory.createStatic(null, "Factory.createStatic()"); |
| System.out.println(" -> " + obj1); |
| |
| Object obj2 = |
| Factory.createStaticWithUnused1(new Object(), null, "Factory.createStaticWithUnused1()"); |
| System.out.println(" -> " + obj2); |
| |
| Object obj3 = |
| Factory.createStaticWithUnused2(null, new Object(), "Factory.createStaticWithUnused2()"); |
| System.out.println(" -> " + obj3); |
| |
| Object obj4 = |
| Factory.createStaticWithUnused3(null, "Factory.createStaticWithUnused3()", new Object()); |
| System.out.println(" -> " + obj4); |
| |
| Object obj5 = |
| Factory.createStaticWithUnused4( |
| "Factory", new Object(), null, ".", new Object(), null, "createStaticWithUnused4()"); |
| System.out.println(" -> " + obj5); |
| } |
| } |
| |
| @NeverMerge |
| static class Uninstantiated {} |
| |
| @NeverMerge |
| static class Factory { |
| |
| @NeverInline |
| public static Object createStatic(Uninstantiated uninstantiated, String msg) { |
| System.out.print(msg); |
| return uninstantiated; |
| } |
| |
| @NeverInline |
| public static Object createStaticWithUnused1( |
| Object unused, Uninstantiated uninstantiated, String msg) { |
| System.out.print(msg); |
| return uninstantiated; |
| } |
| |
| @NeverInline |
| public static Object createStaticWithUnused2( |
| Uninstantiated uninstantiated, Object unused, String msg) { |
| System.out.print(msg); |
| return uninstantiated; |
| } |
| |
| @NeverInline |
| public static Object createStaticWithUnused3( |
| Uninstantiated uninstantiated, String msg, Object unused) { |
| System.out.print(msg); |
| return uninstantiated; |
| } |
| |
| @NeverInline |
| public static Object createStaticWithUnused4( |
| String msg1, |
| Object unused1, |
| Uninstantiated uninstantiated1, |
| String msg2, |
| Object unused2, |
| Uninstantiated uninstantiated2, |
| String msg3) { |
| System.out.print(msg1 + msg2 + msg3); |
| return oneOf(uninstantiated1, uninstantiated2); |
| } |
| |
| @NeverInline |
| private static <T> T oneOf(T x, T y) { |
| return System.currentTimeMillis() > 0 ? x : y; |
| } |
| } |
| } |