| // Copyright 2016 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; |
| |
| import java.util.List; |
| import java.util.concurrent.Callable; |
| import java.util.function.Function; |
| import java.util.stream.Collectors; |
| |
| public class InnerClassLambda { |
| |
| protected final List<String> reference; |
| |
| public InnerClassLambda(List<String> names) { |
| this.reference = names; |
| } |
| |
| /** |
| * Uses a lambda that refers to a method parameter across 2 nested anonymous inner classes as well |
| * as a field in the outer scope, the former being relatively unusual as it causes javac to emit 2 |
| * getfields to pass the captured parameter directly to the generated lambda class, covering an |
| * unusual branch in how we rewrite invokedynamics. |
| */ |
| public Function<List<String>, Callable<List<String>>> prefixFilter(String prefix) { |
| return new Function<List<String>, Callable<List<String>>>() { |
| @Override |
| public Callable<List<String>> apply(List<String> input) { |
| return new Callable<List<String>>() { |
| @Override |
| public List<String> call() throws Exception { |
| return input.stream() |
| .filter(n -> n.startsWith(prefix) && reference.contains(n)) |
| .collect(Collectors.toList()); |
| } |
| }; |
| } |
| }; |
| } |
| } |