| // 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; |
| |
| /** |
| * The base interface, which is generic, and has two default methods. These two default methods will |
| * introduce bridge methods in the child-interfaces |
| */ |
| interface GenericInterfaceWithDefaultMethod<T extends Number> { |
| default T copy(T t) { |
| return t; |
| } |
| |
| default Number getNumber() { |
| return 1; |
| } |
| } |
| |
| /** This interface generate two additional bridge methods */ |
| interface InterfaceWithDefaultAndBridgeMethods extends GenericInterfaceWithDefaultMethod<Integer> { |
| @Override |
| default Integer copy(Integer t) { |
| return GenericInterfaceWithDefaultMethod.super.copy(t); |
| } |
| |
| @Override |
| default Double getNumber() { |
| return 2.3d; |
| } |
| } |
| |
| /** A class implementing the interface. */ |
| class ClassWithDefaultAndBridgeMethods implements InterfaceWithDefaultAndBridgeMethods {} |
| |
| /** The client class that uses the interfaces and the class that implements the interfaces. */ |
| public class DefaultInterfaceWithBridges { |
| private final ClassWithDefaultAndBridgeMethods c = new ClassWithDefaultAndBridgeMethods(); |
| |
| public Integer copy(Integer i) { |
| return c.copy(i); |
| } |
| |
| @SuppressWarnings({"rawtypes", "unchecked"}) |
| public Number copy(Number n) { |
| return ((GenericInterfaceWithDefaultMethod) c).copy(n); |
| } |
| |
| public Number getNumber() { |
| return ((GenericInterfaceWithDefaultMethod) c).getNumber(); |
| } |
| |
| public Double getDouble() { |
| return c.getNumber(); |
| } |
| } |