1 /**
2 * Copyright (c) 2008-2011, http://www.snakeyaml.org
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 package org.yaml.snakeyaml.constructor;
18
19 import org.yaml.snakeyaml.error.YAMLException;
20 import org.yaml.snakeyaml.nodes.Node;
21
22 /**
23 * Because recursive structures are not very common we provide a way to save
24 * some typing when extending a constructor
25 */
26 public abstract class AbstractConstruct implements Construct {
27
28 /**
29 * Fail with a reminder to provide the seconds step for a recursive
30 * structure
31 *
32 * @see org.yaml.snakeyaml.constructor.Construct#construct2ndStep(org.yaml.snakeyaml.nodes.Node,
33 * java.lang.Object)
34 */
35 public void construct2ndStep(Node node, Object data) {
36 if (node.isTwoStepsConstruction()) {
37 throw new IllegalStateException("Not Implemented in " + getClass().getName());
38 } else {
39 throw new YAMLException("Unexpected recursive structure for Node: " + node);
40 }
41 }
42 }