| // 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.classinliner.lambdas; |
| |
| import com.android.tools.r8.NeverInline; |
| |
| public class LambdasTestClass { |
| private static int ID = 0; |
| |
| private static int nextInt() { |
| return ID++; |
| } |
| |
| private static String next() { |
| return Integer.toString(nextInt()); |
| } |
| |
| public interface Iface { |
| String foo(); |
| } |
| |
| public static class IfaceUtil { |
| public static void act(Iface iface) { |
| System.out.println("" + next() + "> " + iface.foo()); |
| } |
| } |
| |
| public static void main(String[] args) { |
| LambdasTestClass test = new LambdasTestClass(); |
| test.testStatelessLambda(); |
| test.testStatefulLambda(next(), next()); |
| } |
| |
| public static String exact() { |
| return next(); |
| } |
| |
| public static String almost(String... s) { |
| return next(); |
| } |
| |
| @NeverInline |
| private void testStatelessLambda() { |
| IfaceUtil.act(() -> next()); |
| IfaceUtil.act(LambdasTestClass::next); |
| IfaceUtil.act(LambdasTestClass::exact); |
| IfaceUtil.act(LambdasTestClass::almost); |
| } |
| |
| @NeverInline |
| private void testStatefulLambda(String a, String b) { |
| IfaceUtil.act(() -> a); |
| IfaceUtil.act(() -> a + b); |
| IfaceUtil.act((a + b)::toLowerCase); |
| } |
| } |