| // 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.desugar.desugaredlibrary; |
| |
| import static com.android.tools.r8.utils.codeinspector.CodeMatchers.invokesMethod; |
| import static com.android.tools.r8.utils.codeinspector.Matchers.isPresent; |
| import static com.android.tools.r8.utils.codeinspector.Matchers.onlyIf; |
| import static org.hamcrest.MatcherAssert.assertThat; |
| import static org.junit.Assert.assertEquals; |
| |
| import com.android.tools.r8.NeverInline; |
| import com.android.tools.r8.StringResource; |
| import com.android.tools.r8.TestParameters; |
| import com.android.tools.r8.TestRuntime.CfVm; |
| import com.android.tools.r8.ToolHelper; |
| import com.android.tools.r8.ir.desugar.DesugaredLibraryConfiguration; |
| import com.android.tools.r8.ir.desugar.DesugaredLibraryConfigurationParser; |
| import com.android.tools.r8.utils.AndroidApiLevel; |
| import com.android.tools.r8.utils.BooleanUtils; |
| import com.android.tools.r8.utils.InternalOptions; |
| 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 com.android.tools.r8.utils.structural.Ordered; |
| import com.google.common.collect.ImmutableList; |
| import java.nio.file.Path; |
| import java.util.Comparator; |
| import java.util.List; |
| import java.util.Objects; |
| import java.util.function.Supplier; |
| import org.hamcrest.Matcher; |
| import org.junit.Assume; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| import org.junit.runners.Parameterized; |
| import org.junit.runners.Parameterized.Parameters; |
| import org.objectweb.asm.ClassWriter; |
| import org.objectweb.asm.Label; |
| import org.objectweb.asm.MethodVisitor; |
| import org.objectweb.asm.Opcodes; |
| |
| @RunWith(Parameterized.class) |
| public class ObjectsTest extends DesugaredLibraryTestBase implements Opcodes { |
| |
| private final TestParameters parameters; |
| private final boolean libraryDesugarJavaUtilObjects; |
| private final boolean shrinkDesugaredLibrary = false; |
| private final Path androidJar; |
| |
| @Parameters(name = "{0}, libraryDesugarJavaUtilObjects: {1}") |
| public static List<Object[]> data() { |
| return buildParameters( |
| getTestParameters().withAllRuntimes().withAllApiLevelsAlsoForCf().build(), |
| BooleanUtils.values()); |
| } |
| |
| public ObjectsTest(TestParameters parameters, boolean libraryDesugarJavaUtilObjects) { |
| this.parameters = parameters; |
| this.libraryDesugarJavaUtilObjects = libraryDesugarJavaUtilObjects; |
| // Using desugared library require a compile SDK of 26 or higher. |
| this.androidJar = |
| ToolHelper.getAndroidJar(Ordered.max(parameters.getApiLevel(), AndroidApiLevel.O)); |
| } |
| |
| DesugaredLibraryConfiguration desugaredLibraryConfiguration( |
| InternalOptions options, boolean libraryCompilation, TestParameters parameters) { |
| return new DesugaredLibraryConfigurationParser( |
| options.dexItemFactory(), |
| options.reporter, |
| libraryCompilation, |
| parameters.getApiLevel().getLevel()) |
| .parse( |
| StringResource.fromFile( |
| libraryDesugarJavaUtilObjects |
| ? ToolHelper.getDesugarLibJsonForTestingAlternative3() |
| : ToolHelper.getDesugarLibJsonForTesting())); |
| } |
| |
| private void configurationForProgramCompilation(InternalOptions options) { |
| options.desugaredLibraryConfiguration = |
| desugaredLibraryConfiguration(options, false, parameters); |
| } |
| |
| private void configurationForLibraryCompilation(InternalOptions options) { |
| options.desugaredLibraryConfiguration = |
| desugaredLibraryConfiguration(options, true, parameters); |
| } |
| |
| private Matcher<MethodSubject> invokesObjectsCompare(String holder) { |
| return invokesMethod( |
| "int", |
| holder, |
| "compare", |
| ImmutableList.of("java.lang.Object", "java.lang.Object", "java.util.Comparator")); |
| } |
| |
| private Matcher<MethodSubject> invokesObjectsEquals(String holder) { |
| return invokesMethod( |
| "boolean", holder, "equals", ImmutableList.of("java.lang.Object", "java.lang.Object")); |
| } |
| |
| private Matcher<MethodSubject> invokesObjectsDeepEquals(String holder) { |
| return invokesMethod( |
| "boolean", holder, "deepEquals", ImmutableList.of("java.lang.Object", "java.lang.Object")); |
| } |
| |
| private Matcher<MethodSubject> invokesObjectsHash(String holder) { |
| return invokesMethod("int", holder, "hash", ImmutableList.of("java.lang.Object[]")); |
| } |
| |
| private Matcher<MethodSubject> invokesObjectsHashCode(String holder) { |
| return invokesMethod("int", holder, "hashCode", ImmutableList.of("java.lang.Object")); |
| } |
| |
| private Matcher<MethodSubject> invokesClassGetClass() { |
| return invokesMethod("java.lang.Class", "java.lang.Object", "getClass", ImmutableList.of()); |
| } |
| |
| private Matcher<MethodSubject> invokesObjectsRequireNonNull(String holder) { |
| return invokesMethod( |
| "java.lang.Object", holder, "requireNonNull", ImmutableList.of("java.lang.Object")); |
| } |
| |
| private Matcher<MethodSubject> invokesObjectsRequireNonNullWithMessage(String holder) { |
| return invokesMethod( |
| "java.lang.Object", |
| holder, |
| "requireNonNull", |
| ImmutableList.of("java.lang.Object", "java.lang.String")); |
| } |
| |
| private Matcher<MethodSubject> invokesObjectsRequireNonNullWithSupplier( |
| String holder, String Supplier) { |
| return invokesMethod( |
| "java.lang.Object", |
| holder, |
| "requireNonNull", |
| ImmutableList.of("java.lang.Object", Supplier)); |
| } |
| |
| private Matcher<MethodSubject> invokesObjectsToString(String holder) { |
| return invokesMethod( |
| "java.lang.String", holder, "toString", ImmutableList.of("java.lang.Object")); |
| } |
| |
| private Matcher<MethodSubject> invokesObjectsToStringWithNullDefault(String holder) { |
| return invokesMethod( |
| "java.lang.String", |
| holder, |
| "toString", |
| ImmutableList.of("java.lang.Object", "java.lang.String")); |
| } |
| |
| private Matcher<MethodSubject> invokesObjectsIsNull(String holder) { |
| return invokesMethod("boolean", holder, "isNull", ImmutableList.of("java.lang.Object")); |
| } |
| |
| private Matcher<MethodSubject> invokesObjectsNonNull(String holder) { |
| return invokesMethod("boolean", holder, "nonNull", ImmutableList.of("java.lang.Object")); |
| } |
| |
| private void inspect(CodeInspector inspector) { |
| ClassSubject testClass = inspector.clazz(TestClass.class); |
| assertThat(testClass, isPresent()); |
| |
| // Objects.equals as added in Android K, so when backporting, this is only backported below K. |
| // However, for library desugaring, the desugaring of Objects.equals happens all the way up to |
| // Android M, as that is grouped with other methods like Objects.requireNonNull which was |
| // added in Android N. |
| boolean invokeJavaUtilObjects = |
| !libraryDesugarJavaUtilObjects |
| && parameters.getApiLevel().isGreaterThanOrEqualTo(AndroidApiLevel.K) |
| || (libraryDesugarJavaUtilObjects |
| && parameters.getApiLevel().isGreaterThanOrEqualTo(AndroidApiLevel.N)); |
| boolean invokeJDollarUtilObjects = |
| libraryDesugarJavaUtilObjects && parameters.getApiLevel().isLessThan(AndroidApiLevel.N); |
| boolean invokeJavaUtilObjectsWithSupplier = |
| !libraryDesugarJavaUtilObjects || !parameters.getApiLevel().isLessThan(AndroidApiLevel.N); |
| boolean invokeJDollarUtilObjectsWithSupplier = |
| libraryDesugarJavaUtilObjects && parameters.getApiLevel().isLessThan(AndroidApiLevel.N); |
| |
| assertThat( |
| testClass.uniqueMethodWithName("objectsCompare"), |
| onlyIf(invokeJavaUtilObjects, invokesObjectsCompare("java.util.Objects"))); |
| assertThat( |
| testClass.uniqueMethodWithName("objectsCompare"), |
| onlyIf(invokeJDollarUtilObjects, invokesObjectsCompare("j$.util.Objects"))); |
| |
| assertThat( |
| testClass.uniqueMethodWithName("objectsDeepEquals"), |
| onlyIf(invokeJavaUtilObjects, invokesObjectsDeepEquals("java.util.Objects"))); |
| assertThat( |
| testClass.uniqueMethodWithName("objectsDeepEquals"), |
| onlyIf(invokeJDollarUtilObjects, invokesObjectsDeepEquals("j$.util.Objects"))); |
| |
| assertThat( |
| testClass.uniqueMethodWithName("objectsEquals"), |
| onlyIf(invokeJavaUtilObjects, invokesObjectsEquals("java.util.Objects"))); |
| assertThat( |
| testClass.uniqueMethodWithName("objectsEquals"), |
| onlyIf(invokeJDollarUtilObjects, invokesObjectsEquals("j$.util.Objects"))); |
| |
| assertThat( |
| testClass.uniqueMethodWithName("objectsHash"), |
| onlyIf(invokeJavaUtilObjects, invokesObjectsHash("java.util.Objects"))); |
| assertThat( |
| testClass.uniqueMethodWithName("objectsHash"), |
| onlyIf(invokeJDollarUtilObjects, invokesObjectsHash("j$.util.Objects"))); |
| |
| assertThat( |
| testClass.uniqueMethodWithName("objectsHashCode"), |
| onlyIf(invokeJavaUtilObjects, invokesObjectsHashCode("java.util.Objects"))); |
| assertThat( |
| testClass.uniqueMethodWithName("objectsHashCode"), |
| onlyIf(invokeJDollarUtilObjects, invokesObjectsHashCode("j$.util.Objects"))); |
| |
| assertThat( |
| testClass.uniqueMethodWithName("objectsRequireNonNull"), |
| onlyIf(invokeJavaUtilObjects, invokesObjectsRequireNonNull("java.util.Objects"))); |
| assertThat( |
| testClass.uniqueMethodWithName("objectsRequireNonNull"), |
| onlyIf(parameters.getApiLevel().isLessThan(AndroidApiLevel.K), invokesClassGetClass())); |
| |
| assertThat( |
| testClass.uniqueMethodWithName("objectsRequireNonNullWithMessage"), |
| onlyIf( |
| invokeJavaUtilObjects, invokesObjectsRequireNonNullWithMessage("java.util.Objects"))); |
| assertThat( |
| testClass.uniqueMethodWithName("objectsRequireNonNullWithMessage"), |
| onlyIf( |
| invokeJDollarUtilObjects, invokesObjectsRequireNonNullWithMessage("j$.util.Objects"))); |
| |
| assertThat( |
| testClass.uniqueMethodWithName("objectsRequireNonNullWithSupplier"), |
| onlyIf( |
| invokeJavaUtilObjectsWithSupplier, |
| invokesObjectsRequireNonNullWithSupplier( |
| "java.util.Objects", "java.util.function.Supplier"))); |
| assertThat( |
| testClass.uniqueMethodWithName("objectsRequireNonNullWithSupplier"), |
| onlyIf( |
| invokeJDollarUtilObjectsWithSupplier, |
| invokesObjectsRequireNonNullWithSupplier( |
| "j$.util.Objects", "j$.util.function.Supplier"))); |
| |
| assertThat( |
| testClass.uniqueMethodWithName("objectsToString"), |
| onlyIf(invokeJavaUtilObjects, invokesObjectsToString("java.util.Objects"))); |
| assertThat( |
| testClass.uniqueMethodWithName("objectsToString"), |
| onlyIf(invokeJDollarUtilObjects, invokesObjectsToString("j$.util.Objects"))); |
| |
| assertThat( |
| testClass.uniqueMethodWithName("objectsToStringWithNullDefault"), |
| onlyIf(invokeJavaUtilObjects, invokesObjectsToStringWithNullDefault("java.util.Objects"))); |
| assertThat( |
| testClass.uniqueMethodWithName("objectsToStringWithNullDefault"), |
| onlyIf(invokeJDollarUtilObjects, invokesObjectsToStringWithNullDefault("j$.util.Objects"))); |
| |
| invokeJavaUtilObjects = parameters.getApiLevel().isGreaterThanOrEqualTo(AndroidApiLevel.N); |
| |
| assertThat( |
| testClass.uniqueMethodWithName("objectsIsNull"), |
| onlyIf(invokeJavaUtilObjects, invokesObjectsIsNull("java.util.Objects"))); |
| assertThat( |
| testClass.uniqueMethodWithName("objectsIsNull"), |
| onlyIf(invokeJDollarUtilObjects, invokesObjectsIsNull("j$.util.Objects"))); |
| |
| assertThat( |
| testClass.uniqueMethodWithName("objectsNonNull"), |
| onlyIf(invokeJavaUtilObjects, invokesObjectsNonNull("java.util.Objects"))); |
| assertThat( |
| testClass.uniqueMethodWithName("objectsNonNull"), |
| onlyIf(invokeJDollarUtilObjects, invokesObjectsNonNull("j$.util.Objects"))); |
| } |
| |
| @Test |
| public void testD8Cf() throws Exception { |
| // Adjust API level if running on JDK 8. The java.util.Objects methods added in |
| // Android R where added in JDK 9, so setting the the API level to Android P will backport |
| // these methods for JDK 8. |
| AndroidApiLevel apiLevel = parameters.getApiLevel(); |
| if (parameters.getRuntime().isCf() |
| && parameters.getRuntime().asCf().getVm() == CfVm.JDK8 |
| && apiLevel.isGreaterThanOrEqualTo(AndroidApiLevel.R)) { |
| apiLevel = AndroidApiLevel.P; |
| } |
| |
| KeepRuleConsumer keepRuleConsumer = createKeepRuleConsumer(parameters); |
| // Use D8 to desugar with Java classfile output. |
| Path jar = |
| testForD8(Backend.CF) |
| .addLibraryFiles(androidJar) |
| .addOptionsModification(this::configurationForProgramCompilation) |
| .addInnerClasses(ObjectsTest.class) |
| .addProgramClassFileData(dumpAndroidRUtilsObjectsMethods()) |
| .setMinApi(apiLevel) |
| .enableCoreLibraryDesugaring(parameters.getApiLevel(), keepRuleConsumer) |
| .compile() |
| .inspect(this::inspect) |
| .writeToZip(); |
| |
| if (parameters.getRuntime().isDex()) { |
| // Collection keep rules is only implemented in the DEX writer. |
| String desugaredLibraryKeepRules = keepRuleConsumer.get(); |
| if (desugaredLibraryKeepRules != null) { |
| assertEquals(0, desugaredLibraryKeepRules.length()); |
| desugaredLibraryKeepRules = "-keep class * { *; }"; |
| } |
| |
| // Convert to DEX without desugaring and run. |
| testForD8() |
| .addLibraryFiles(androidJar) |
| .addProgramFiles(jar) |
| .setMinApi(apiLevel) |
| .disableDesugaring() |
| .compile() |
| .addDesugaredCoreLibraryRunClassPath( |
| (apiLevel_, keepRules, shrink) -> |
| buildDesugaredLibrary( |
| apiLevel_, |
| keepRules, |
| shrink, |
| ImmutableList.of(), |
| this::configurationForLibraryCompilation), |
| parameters.getApiLevel(), |
| desugaredLibraryKeepRules, |
| shrinkDesugaredLibrary) |
| .run( |
| parameters.getRuntime(), |
| TestClass.class, |
| Boolean.toString(libraryDesugarJavaUtilObjects)) |
| .assertSuccessWithOutput(expectedOutput(libraryDesugarJavaUtilObjects)); |
| } else { |
| // Build the desugared library in class file format. |
| Path desugaredLib = |
| getDesugaredLibraryInCF(parameters, this::configurationForLibraryCompilation); |
| |
| // Run on the JVM with desuagred library on classpath. |
| testForJvm() |
| .addProgramFiles(jar) |
| .addRunClasspathFiles(desugaredLib) |
| .run( |
| parameters.getRuntime(), |
| TestClass.class, |
| Boolean.toString(libraryDesugarJavaUtilObjects)) |
| .assertSuccessWithOutput(expectedOutput(libraryDesugarJavaUtilObjects)); |
| } |
| } |
| |
| @Test |
| public void testD8() throws Exception { |
| Assume.assumeTrue(parameters.getRuntime().isDex()); |
| KeepRuleConsumer keepRuleConsumer = createKeepRuleConsumer(parameters); |
| testForD8() |
| .addLibraryFiles(androidJar) |
| .addOptionsModification(this::configurationForProgramCompilation) |
| .addInnerClasses(ObjectsTest.class) |
| .addProgramClassFileData(dumpAndroidRUtilsObjectsMethods()) |
| .setMinApi(parameters.getApiLevel()) |
| .enableCoreLibraryDesugaring(parameters.getApiLevel(), keepRuleConsumer) |
| .compile() |
| .addDesugaredCoreLibraryRunClassPath( |
| (apiLevel, keepRules, shrink) -> |
| buildDesugaredLibrary( |
| apiLevel, |
| keepRules, |
| shrink, |
| ImmutableList.of(), |
| this::configurationForLibraryCompilation), |
| parameters.getApiLevel(), |
| keepRuleConsumer.get(), |
| shrinkDesugaredLibrary) |
| .inspect(this::inspect) |
| .run( |
| parameters.getRuntime(), |
| TestClass.class, |
| Boolean.toString(libraryDesugarJavaUtilObjects)) |
| .assertSuccessWithOutput(expectedOutput(libraryDesugarJavaUtilObjects)); |
| } |
| |
| @Test |
| public void testR8() throws Exception { |
| Assume.assumeTrue(parameters.getRuntime().isDex()); |
| KeepRuleConsumer keepRuleConsumer = createKeepRuleConsumer(parameters); |
| testForR8(parameters.getBackend()) |
| .addLibraryFiles(androidJar) |
| .addOptionsModification(this::configurationForProgramCompilation) |
| .addInnerClasses(ObjectsTest.class) |
| .addKeepMainRule(TestClass.class) |
| .addProgramClassFileData(dumpAndroidRUtilsObjectsMethods()) |
| .enableInliningAnnotations() |
| .noMinification() |
| .addKeepRules("-keep class AndroidRUtilsObjectsMethods { *; }") |
| .addKeepRules("-neverinline class AndroidRUtilsObjectsMethods { *; }") |
| .setMinApi(parameters.getApiLevel()) |
| .enableCoreLibraryDesugaring(parameters.getApiLevel(), keepRuleConsumer) |
| .compile() |
| .addDesugaredCoreLibraryRunClassPath( |
| (apiLevel, keepRules, shrink) -> |
| buildDesugaredLibrary( |
| apiLevel, |
| keepRules, |
| shrink, |
| ImmutableList.of(), |
| this::configurationForLibraryCompilation), |
| parameters.getApiLevel(), |
| keepRuleConsumer.get(), |
| shrinkDesugaredLibrary) |
| .inspect(this::inspect) |
| .run( |
| parameters.getRuntime(), |
| TestClass.class, |
| Boolean.toString(libraryDesugarJavaUtilObjects)) |
| .assertSuccessWithOutput(expectedOutput(libraryDesugarJavaUtilObjects)); |
| } |
| |
| private String expectedOutput(boolean objectsRequireNonNullWithSupplierSupported) { |
| return StringUtils.lines( |
| "1", |
| "false", |
| "false", |
| Objects.toString(Objects.hash(1, 2)), |
| "4", |
| "NPE", |
| "Was null", |
| objectsRequireNonNullWithSupplierSupported |
| ? "Supplier said was null" |
| : "Not supported (b/174840626)", |
| "5", |
| "6", |
| "true", |
| "false", |
| "1", |
| "2", |
| "3", |
| "4"); |
| } |
| |
| static class TestClass { |
| @NeverInline |
| private static void objectsCompare(String s1, String s2) { |
| Comparator<String> stringsNullLast = |
| (o1, o2) -> { |
| if (o1 == null) { |
| return o2 == null ? 0 : 1; |
| } |
| return o2 == null ? -1 : o1.compareTo(o2); |
| }; |
| System.out.println(Objects.compare(s1, s2, stringsNullLast)); |
| } |
| |
| @NeverInline |
| private static void objectsDeepEquals(Object o1, Object o2) { |
| System.out.println(Objects.deepEquals(o1, o2)); |
| } |
| |
| @NeverInline |
| private static void objectsEquals(Object o1, Object o2) { |
| System.out.println(Objects.equals(o1, o2)); |
| } |
| |
| @NeverInline |
| private static void objectsHash(Object o1, Object o2) { |
| System.out.println(Objects.hash(o1, o2)); |
| } |
| |
| @NeverInline |
| private static void objectsHashCode(Object o) { |
| System.out.println(Objects.hashCode(o)); |
| } |
| |
| @NeverInline |
| private static void objectsRequireNonNull(Object o) { |
| try { |
| System.out.println(Objects.requireNonNull(o)); |
| } catch (NullPointerException e) { |
| System.out.println("NPE"); |
| } |
| } |
| |
| @NeverInline |
| private static void objectsRequireNonNullWithMessage(Object o, String message) { |
| try { |
| System.out.println(Objects.requireNonNull(o, message)); |
| } catch (NullPointerException e) { |
| System.out.println(e.getMessage()); |
| } |
| } |
| |
| @NeverInline |
| private static void objectsRequireNonNullWithSupplier( |
| Object o, Supplier<String> messageSupplier) { |
| try { |
| System.out.println(Objects.requireNonNull(o, messageSupplier)); |
| } catch (NullPointerException e) { |
| System.out.println(e.getMessage()); |
| } |
| } |
| |
| @NeverInline |
| private static void objectsToString(Object o) { |
| System.out.println(Objects.toString(o)); |
| } |
| |
| @NeverInline |
| private static void objectsToStringWithNullDefault(Object o, String nullDefault) { |
| System.out.println(Objects.toString(o, nullDefault)); |
| } |
| |
| @NeverInline |
| private static void objectsIsNull(Object o) { |
| System.out.println(Objects.isNull(o)); |
| } |
| |
| @NeverInline |
| private static void objectsNonNull(Object o) { |
| System.out.println(Objects.nonNull(o)); |
| } |
| |
| public static void main(String[] args) throws Exception { |
| boolean objectsRequireNonNullWithSupplierSupported = Boolean.parseBoolean(args[0]); |
| // Android K methods. |
| objectsCompare("b", "a"); |
| objectsDeepEquals(args, new Object()); |
| objectsEquals(makeNullable(args), new Object()); |
| objectsHash(1, 2); |
| objectsHashCode(4); |
| objectsRequireNonNull(getNonNullableNull()); |
| objectsRequireNonNullWithMessage(null, "Was null"); |
| if (objectsRequireNonNullWithSupplierSupported) { |
| objectsRequireNonNullWithSupplier(null, () -> "Supplier said was null"); |
| } else { |
| System.out.println("Not supported (b/174840626)"); |
| } |
| objectsToString(makeNullable("5")); |
| objectsToStringWithNullDefault(getNonNullableNull(), "6"); |
| |
| // Android N methods. |
| objectsIsNull(getNonNullableNull()); |
| objectsNonNull(getNonNullableNull()); |
| |
| // Android R methods. |
| Class<?> c = Class.forName("AndroidRUtilsObjectsMethods"); |
| c.getDeclaredMethod("checkFromIndexSize", int.class, int.class, int.class) |
| .invoke(null, 1, 2, 10); |
| c.getDeclaredMethod("checkFromToIndex", int.class, int.class, int.class) |
| .invoke(null, 2, 4, 10); |
| c.getDeclaredMethod("checkIndex", int.class, int.class).invoke(null, 3, 10); |
| c.getDeclaredMethod("requireNonNullElse", Object.class, Object.class).invoke(null, null, 4); |
| // TODO(b/174840626) Also support requireNonNullElseGet. |
| } |
| |
| private static Object makeNullable(Object obj) { |
| return System.currentTimeMillis() > 0 ? obj : null; |
| } |
| |
| private static Object getNonNullableNull() { |
| return System.currentTimeMillis() > 0 ? null : new Object(); |
| } |
| } |
| |
| /* |
| Dump below is from this source: |
| |
| import java.util.function.Supplier; |
| import java.util.Objects; |
| |
| public class AndroidRUtilsObjectsMethods { |
| public static void checkFromIndexSize(int fromIndex, int size, int length) { |
| System.out.println(Objects.checkFromIndexSize(fromIndex, size, length)); |
| } |
| public static void checkFromToIndex(int fromIndex, int toIndex, int length) { |
| System.out.println(Objects.checkFromToIndex(fromIndex, toIndex, length)); |
| } |
| public static void checkIndex(int index, int length) { |
| System.out.println(Objects.checkIndex(index, length)); |
| } |
| public static <T> void requireNonNullElse(T obj, T defaultObj) { |
| System.out.println(Objects.requireNonNullElse(obj, defaultObj)); |
| } |
| public static <T> void requireNonNullElseGet(T obj, Supplier<? extends T> supplier) { |
| System.out.println(Objects.requireNonNullElse(obj, supplier)); |
| } |
| } |
| |
| This is added as a dump as it use APIs which are only abailable from JDK 9. |
| */ |
| public static byte[] dumpAndroidRUtilsObjectsMethods() throws Exception { |
| |
| ClassWriter classWriter = new ClassWriter(0); |
| MethodVisitor methodVisitor; |
| |
| classWriter.visit( |
| V9, ACC_PUBLIC | ACC_SUPER, "AndroidRUtilsObjectsMethods", null, "java/lang/Object", null); |
| |
| classWriter.visitSource("AndroidRUtilsObjectsMethods.java", null); |
| |
| { |
| methodVisitor = classWriter.visitMethod(ACC_PUBLIC, "<init>", "()V", null, null); |
| methodVisitor.visitCode(); |
| Label label0 = new Label(); |
| methodVisitor.visitLabel(label0); |
| methodVisitor.visitLineNumber(3, label0); |
| methodVisitor.visitVarInsn(ALOAD, 0); |
| methodVisitor.visitMethodInsn(INVOKESPECIAL, "java/lang/Object", "<init>", "()V", false); |
| methodVisitor.visitInsn(RETURN); |
| methodVisitor.visitMaxs(1, 1); |
| methodVisitor.visitEnd(); |
| } |
| { |
| methodVisitor = |
| classWriter.visitMethod( |
| ACC_PUBLIC | ACC_STATIC, "checkFromIndexSize", "(III)V", null, null); |
| methodVisitor.visitCode(); |
| Label label0 = new Label(); |
| methodVisitor.visitLabel(label0); |
| methodVisitor.visitLineNumber(5, label0); |
| methodVisitor.visitFieldInsn(GETSTATIC, "java/lang/System", "out", "Ljava/io/PrintStream;"); |
| methodVisitor.visitVarInsn(ILOAD, 0); |
| methodVisitor.visitVarInsn(ILOAD, 1); |
| methodVisitor.visitVarInsn(ILOAD, 2); |
| methodVisitor.visitMethodInsn( |
| INVOKESTATIC, "java/util/Objects", "checkFromIndexSize", "(III)I", false); |
| methodVisitor.visitMethodInsn(INVOKEVIRTUAL, "java/io/PrintStream", "println", "(I)V", false); |
| Label label1 = new Label(); |
| methodVisitor.visitLabel(label1); |
| methodVisitor.visitLineNumber(6, label1); |
| methodVisitor.visitInsn(RETURN); |
| methodVisitor.visitMaxs(4, 3); |
| methodVisitor.visitEnd(); |
| } |
| { |
| methodVisitor = |
| classWriter.visitMethod( |
| ACC_PUBLIC | ACC_STATIC, "checkFromToIndex", "(III)V", null, null); |
| methodVisitor.visitCode(); |
| Label label0 = new Label(); |
| methodVisitor.visitLabel(label0); |
| methodVisitor.visitLineNumber(8, label0); |
| methodVisitor.visitFieldInsn(GETSTATIC, "java/lang/System", "out", "Ljava/io/PrintStream;"); |
| methodVisitor.visitVarInsn(ILOAD, 0); |
| methodVisitor.visitVarInsn(ILOAD, 1); |
| methodVisitor.visitVarInsn(ILOAD, 2); |
| methodVisitor.visitMethodInsn( |
| INVOKESTATIC, "java/util/Objects", "checkFromToIndex", "(III)I", false); |
| methodVisitor.visitMethodInsn(INVOKEVIRTUAL, "java/io/PrintStream", "println", "(I)V", false); |
| Label label1 = new Label(); |
| methodVisitor.visitLabel(label1); |
| methodVisitor.visitLineNumber(9, label1); |
| methodVisitor.visitInsn(RETURN); |
| methodVisitor.visitMaxs(4, 3); |
| methodVisitor.visitEnd(); |
| } |
| { |
| methodVisitor = |
| classWriter.visitMethod(ACC_PUBLIC | ACC_STATIC, "checkIndex", "(II)V", null, null); |
| methodVisitor.visitCode(); |
| Label label0 = new Label(); |
| methodVisitor.visitLabel(label0); |
| methodVisitor.visitLineNumber(11, label0); |
| methodVisitor.visitFieldInsn(GETSTATIC, "java/lang/System", "out", "Ljava/io/PrintStream;"); |
| methodVisitor.visitVarInsn(ILOAD, 0); |
| methodVisitor.visitVarInsn(ILOAD, 1); |
| methodVisitor.visitMethodInsn( |
| INVOKESTATIC, "java/util/Objects", "checkIndex", "(II)I", false); |
| methodVisitor.visitMethodInsn(INVOKEVIRTUAL, "java/io/PrintStream", "println", "(I)V", false); |
| Label label1 = new Label(); |
| methodVisitor.visitLabel(label1); |
| methodVisitor.visitLineNumber(12, label1); |
| methodVisitor.visitInsn(RETURN); |
| methodVisitor.visitMaxs(3, 2); |
| methodVisitor.visitEnd(); |
| } |
| { |
| methodVisitor = |
| classWriter.visitMethod( |
| ACC_PUBLIC | ACC_STATIC, |
| "requireNonNullElse", |
| "(Ljava/lang/Object;Ljava/lang/Object;)V", |
| "<T:Ljava/lang/Object;>(TT;TT;)V", |
| null); |
| methodVisitor.visitCode(); |
| Label label0 = new Label(); |
| methodVisitor.visitLabel(label0); |
| methodVisitor.visitLineNumber(14, label0); |
| methodVisitor.visitFieldInsn(GETSTATIC, "java/lang/System", "out", "Ljava/io/PrintStream;"); |
| methodVisitor.visitVarInsn(ALOAD, 0); |
| methodVisitor.visitVarInsn(ALOAD, 1); |
| methodVisitor.visitMethodInsn( |
| INVOKESTATIC, |
| "java/util/Objects", |
| "requireNonNullElse", |
| "(Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;", |
| false); |
| methodVisitor.visitMethodInsn( |
| INVOKEVIRTUAL, "java/io/PrintStream", "println", "(Ljava/lang/Object;)V", false); |
| Label label1 = new Label(); |
| methodVisitor.visitLabel(label1); |
| methodVisitor.visitLineNumber(15, label1); |
| methodVisitor.visitInsn(RETURN); |
| methodVisitor.visitMaxs(3, 2); |
| methodVisitor.visitEnd(); |
| } |
| { |
| methodVisitor = |
| classWriter.visitMethod( |
| ACC_PUBLIC | ACC_STATIC, |
| "requireNonNullElseGet", |
| "(Ljava/lang/Object;Ljava/util/function/Supplier;)V", |
| "<T:Ljava/lang/Object;>(TT;Ljava/util/function/Supplier<+TT;>;)V", |
| null); |
| methodVisitor.visitCode(); |
| Label label0 = new Label(); |
| methodVisitor.visitLabel(label0); |
| methodVisitor.visitLineNumber(18, label0); |
| methodVisitor.visitFieldInsn(GETSTATIC, "java/lang/System", "out", "Ljava/io/PrintStream;"); |
| methodVisitor.visitVarInsn(ALOAD, 0); |
| methodVisitor.visitVarInsn(ALOAD, 1); |
| methodVisitor.visitMethodInsn( |
| INVOKESTATIC, |
| "java/util/Objects", |
| "requireNonNullElse", |
| "(Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;", |
| false); |
| methodVisitor.visitMethodInsn( |
| INVOKEVIRTUAL, "java/io/PrintStream", "println", "(Ljava/lang/Object;)V", false); |
| Label label1 = new Label(); |
| methodVisitor.visitLabel(label1); |
| methodVisitor.visitLineNumber(19, label1); |
| methodVisitor.visitInsn(RETURN); |
| methodVisitor.visitMaxs(3, 2); |
| methodVisitor.visitEnd(); |
| } |
| classWriter.visitEnd(); |
| |
| return classWriter.toByteArray(); |
| } |
| } |
