| /* |
| * Copyright (C) 2019 The Dagger Authors. |
| * |
| * 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 dagger.example.atm; |
| |
| import java.util.List; |
| |
| /** Abstract command that accepts a single argument. */ |
| abstract class SingleArgCommand implements Command { |
| |
| @Override |
| public final Result handleInput(List<String> input) { |
| return input.size() == 1 ? handleArg(input.get(0)) : Result.invalid(); |
| } |
| |
| /** Handles the single argument to the command. */ |
| protected abstract Result handleArg(String arg); |
| } |