1/**
2 * Copyright (C) 2010 the original author or authors.
3 * See the notice.md file distributed with this work for additional
4 * information regarding copyright ownership.
5 *
6 * Licensed under the Apache License, Version 2.0 (the "License");
7 * you may not use this file except in compliance with the License.
8 * You may obtain a copy of the License at
9 *
10 *     http://www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing, software
13 * distributed under the License is distributed on an "AS IS" BASIS,
14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 * See the License for the specific language governing permissions and
16 * limitations under the License.
17 */
18
19package com.beust.jcommander;
20
21/**
22 * Allows the specification of default values.
23 *
24 * @author cbeust
25 */
26public interface IDefaultProvider {
27
28  /**
29   * @param optionName The name of the option as specified in the names() attribute
30   * of the @Parameter option (e.g. "-file").
31   *
32   * @return the default value for this option.
33   */
34  String getDefaultValueFor(String optionName);
35}
36