| // 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.enumunboxing; |
| |
| import com.android.tools.r8.NeverClassInline; |
| import com.android.tools.r8.NeverInline; |
| import com.android.tools.r8.TestParameters; |
| import java.util.List; |
| 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 StringValueOfEnumUnboxingTest extends EnumUnboxingTestBase { |
| private final TestParameters parameters; |
| private final boolean enumValueOptimization; |
| private final EnumKeepRules enumKeepRules; |
| |
| @Parameters(name = "{0} valueOpt: {1} keep: {2}") |
| public static List<Object[]> data() { |
| return enumUnboxingTestParameters(); |
| } |
| |
| public StringValueOfEnumUnboxingTest( |
| TestParameters parameters, boolean enumValueOptimization, EnumKeepRules enumKeepRules) { |
| this.parameters = parameters; |
| this.enumValueOptimization = enumValueOptimization; |
| this.enumKeepRules = enumKeepRules; |
| } |
| |
| @Test |
| public void testEnumUnboxing() throws Exception { |
| Class<?> classToTest = Main.class; |
| testForR8(parameters.getBackend()) |
| .addProgramClasses(classToTest, MyEnum.class) |
| .addKeepMainRule(classToTest) |
| .addKeepRules(enumKeepRules.getKeepRules()) |
| .addEnumUnboxingInspector(inspector -> inspector.assertUnboxed(MyEnum.class)) |
| .enableNeverClassInliningAnnotations() |
| .enableInliningAnnotations() |
| .addOptionsModification(opt -> enableEnumOptions(opt, enumValueOptimization)) |
| .setMinApi(parameters.getApiLevel()) |
| .compile() |
| .run(parameters.getRuntime(), classToTest) |
| .assertSuccess() |
| .inspectStdOut(this::assertLines2By2Correct); |
| } |
| |
| @NeverClassInline |
| enum MyEnum { |
| A, |
| B, |
| C |
| } |
| |
| static class Main { |
| public static void main(String[] args) { |
| System.out.println(MyEnum.A.ordinal()); |
| System.out.println(0); |
| stringValueOf(); |
| stringBuilder(); |
| } |
| |
| private static void stringValueOf() { |
| System.out.println(getString(MyEnum.A)); |
| System.out.println("A"); |
| System.out.println(getString(null)); |
| System.out.println("null"); |
| } |
| |
| private static void stringBuilder() { |
| StringBuilder stringBuilder = new StringBuilder(); |
| append(stringBuilder, MyEnum.A); |
| append(stringBuilder, MyEnum.B); |
| append(stringBuilder, null); |
| appendTryCatch(stringBuilder, MyEnum.A); |
| appendTryCatch(stringBuilder, MyEnum.B); |
| appendTryCatch(stringBuilder, null); |
| System.out.println(stringBuilder.toString()); |
| System.out.println("ABnullABnull"); |
| |
| StringBuffer stringBuffer = new StringBuffer(); |
| append(stringBuffer, MyEnum.A); |
| append(stringBuffer, MyEnum.B); |
| append(stringBuffer, null); |
| appendTryCatch(stringBuffer, MyEnum.A); |
| appendTryCatch(stringBuffer, MyEnum.B); |
| appendTryCatch(stringBuffer, null); |
| System.out.println(stringBuffer.toString()); |
| System.out.println("ABnullABnull"); |
| } |
| |
| @NeverInline |
| private static StringBuilder append(StringBuilder sb, MyEnum e) { |
| return sb.append(e); |
| } |
| |
| @NeverInline |
| private static StringBuffer append(StringBuffer sb, MyEnum e) { |
| return sb.append(e); |
| } |
| |
| @NeverInline |
| private static StringBuilder appendTryCatch(StringBuilder sb, MyEnum e) { |
| try { |
| sb.append(e); |
| throwNull(); |
| } catch (NullPointerException ignored) { |
| } |
| return sb; |
| } |
| |
| @NeverInline |
| private static StringBuffer appendTryCatch(StringBuffer sb, MyEnum e) { |
| try { |
| sb.append(e); |
| throwNull(); |
| } catch (NullPointerException ignored) { |
| } |
| return sb; |
| } |
| |
| @NeverInline |
| private static void throwNull() { |
| if (System.currentTimeMillis() > 0) { |
| throw new NullPointerException("exception"); |
| } |
| } |
| |
| @NeverInline |
| private static String getString(MyEnum e) { |
| return String.valueOf(e); |
| } |
| } |
| } |