| // Copyright (c) 2021, 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.classmerging.vertical; |
| |
| import com.android.tools.r8.TestBase; |
| import com.android.tools.r8.TestParameters; |
| import com.android.tools.r8.TestParametersCollection; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| import org.junit.runners.Parameterized; |
| |
| @RunWith(Parameterized.class) |
| public class MergeSynthesizingContextIntoSyntheticLambdaTest extends TestBase { |
| |
| private final TestParameters parameters; |
| |
| @Parameterized.Parameters(name = "{0}") |
| public static TestParametersCollection data() { |
| return getTestParameters().withAllRuntimesAndApiLevels().build(); |
| } |
| |
| public MergeSynthesizingContextIntoSyntheticLambdaTest(TestParameters parameters) { |
| this.parameters = parameters; |
| } |
| |
| @Test |
| public void test() throws Exception { |
| testForR8(parameters.getBackend()) |
| .addInnerClasses(getClass()) |
| .addKeepMainRule(Main.class) |
| // Disable inlining to ensure that the synthetic lambdas remain in the residual |
| // program. |
| .addOptionsModification(options -> options.enableInlining = false) |
| .addVerticallyMergedClassesInspector( |
| inspector -> { |
| if (parameters.isCfRuntime()) { |
| inspector.assertNoClassesMerged(); |
| } else { |
| inspector.assertMergedIntoSubtype(I.class); |
| } |
| }) |
| .setMinApi(parameters.getApiLevel()) |
| .compile() |
| .run(parameters.getRuntime(), Main.class) |
| .assertSuccessWithOutputLines("I", "J"); |
| } |
| |
| static class Main { |
| public static void main(String[] args) { |
| I i = () -> System.out.println("I"); |
| i.f(); |
| i.g().h(); |
| } |
| } |
| |
| interface I { |
| |
| void f(); |
| |
| default J g() { |
| // Has synthesizing context I. After vertical class merging, this synthesizing context is |
| // rewritten into the synthetic lambda defined in main(). |
| return () -> System.out.println("J"); |
| } |
| } |
| |
| interface J { |
| |
| void h(); |
| } |
| } |