| // 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 static org.junit.Assume.assumeFalse; |
| import static org.junit.Assume.assumeTrue; |
| |
| import com.android.tools.r8.TestBase; |
| import com.android.tools.r8.TestBuilder; |
| import com.android.tools.r8.TestParameters; |
| import com.android.tools.r8.transformers.MethodTransformer; |
| import com.android.tools.r8.utils.BooleanUtils; |
| import java.util.List; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| import org.junit.runners.Parameterized; |
| |
| @RunWith(Parameterized.class) |
| public class EnumWithNonDefaultForwardingConstructorTest extends TestBase { |
| |
| private final boolean enableEnumUnboxing; |
| private final TestParameters parameters; |
| |
| @Parameterized.Parameters(name = "{1}, enum unboxing: {0}") |
| public static List<Object[]> data() { |
| return buildParameters( |
| BooleanUtils.values(), getTestParameters().withAllRuntimesAndApiLevels().build()); |
| } |
| |
| public EnumWithNonDefaultForwardingConstructorTest( |
| boolean enableEnumUnboxing, TestParameters parameters) { |
| this.enableEnumUnboxing = enableEnumUnboxing; |
| this.parameters = parameters; |
| } |
| |
| @Test |
| public void testJvm() throws Exception { |
| assumeFalse(enableEnumUnboxing); |
| assumeTrue(parameters.isCfRuntime()); |
| testForJvm() |
| .apply(this::addProgramClasses) |
| .run(parameters.getRuntime(), TestClass.class) |
| .assertSuccessWithOutputLines("42"); |
| } |
| |
| @Test |
| public void test() throws Exception { |
| testForR8(parameters.getBackend()) |
| .apply(this::addProgramClasses) |
| .addKeepMainRule(TestClass.class) |
| .addOptionsModification(options -> options.enableEnumUnboxing = enableEnumUnboxing) |
| .setMinApi(parameters.getApiLevel()) |
| .compile() |
| .run(parameters.getRuntime(), TestClass.class) |
| .assertSuccessWithOutputLines("42"); |
| } |
| |
| private void addProgramClasses(TestBuilder<?, ?> builder) throws Exception { |
| builder |
| .addProgramClasses(TestClass.class) |
| .addProgramClassFileData( |
| transformer(MyEnum.class) |
| .addMethodTransformer( |
| new MethodTransformer() { |
| @Override |
| public void visitVarInsn(int opcode, int var) { |
| if (getContext().getReference().getMethodName().equals("<init>")) { |
| // Pass the value of the third argument (ignoring the receiver) to the |
| // parent constructor instead of the value of the second argument. |
| super.visitVarInsn(opcode, var == 2 ? 3 : var); |
| return; |
| } |
| super.visitVarInsn(opcode, var); |
| } |
| }) |
| .transform()); |
| } |
| |
| static class TestClass { |
| |
| public static void main(String[] args) { |
| MyEnum instance = System.currentTimeMillis() > 0 ? MyEnum.A : MyEnum.B; |
| System.out.println(instance.ordinal()); |
| } |
| } |
| |
| enum MyEnum { |
| A(42), |
| B(43); |
| |
| MyEnum(int ordinal) {} |
| } |
| } |