| // Copyright 2017 The Bazel Authors. All rights reserved. |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| package com.google.devtools.build.android.desugar.testdata.java8; |
| |
| import java.util.List; |
| import java.util.stream.Collectors; |
| import java.util.stream.Stream; |
| |
| /** |
| * Desugar test input interface that declares lambdas and method references in default and static |
| * interface methods. |
| */ |
| public interface InterfaceMethod { |
| public default List<String> defaultMethodReference(List<String> names) { |
| return names.stream().filter(this::startsWithS).collect(Collectors.toList()); |
| } |
| |
| public default String defaultInvokingBootclasspathMethods(String expectedValue) { |
| return Stream.of(expectedValue).findFirst().orElse("unexpected"); |
| } |
| |
| public default List<String> staticMethodReference(List<String> names) { |
| return names.stream().filter(InterfaceMethod::startsWithA).collect(Collectors.toList()); |
| } |
| |
| public default List<String> lambdaCallsDefaultMethod(List<String> names) { |
| return names.stream().filter(s -> startsWithS(s)).collect(Collectors.toList()); |
| } |
| |
| public static boolean startsWithA(String input) { |
| return input.startsWith("A"); |
| } |
| |
| public default boolean startsWithS(String input) { |
| return input.startsWith("S"); |
| } |
| |
| // Same descriptor as when method above is turned into static method |
| public default boolean startsWithS(InterfaceMethod receiver, String input) { |
| return startsWithS(input); |
| } |
| |
| /** |
| * Empty class implementing {@link InterfaceMethod} so the test can instantiate and call default |
| * methods. |
| */ |
| public static class Concrete implements InterfaceMethod { |
| // We will rewrite this class to subclass InterfaceMethod's companion class, and call its super |
| // constructor. This field is here to make sure we don't also rewrite its constructor call. |
| @SuppressWarnings("unused") |
| private final Object o = new Object(); |
| } |
| } |