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/**
 * Copyright (c) 2008, http://www.snakeyaml.org
 *
 * 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.fitbur.snakeyaml.constructor;

import com.fitbur.snakeyaml.error.YAMLException;
import com.fitbur.snakeyaml.nodes.Node;

/**
 * Because recursive structures are not very common we provide a way to save
 * some typing when extending a constructor
 */
public abstract class AbstractConstruct implements Construct {

    /**
     * Fail with a reminder to provide the seconds step for a recursive
     * structure
     * 
     * @see com.fitbur.snakeyaml.constructor.Construct#construct2ndStep(com.fitbur.snakeyaml.nodes.Node,
     *      java.lang.Object)
     */
    public void construct2ndStep(Node node, Object data) {
        if (node.isTwoStepsConstruction()) {
            throw new IllegalStateException("Not Implemented in " + getClass().getName());
        } else {
            throw new YAMLException("Unexpected recursive structure for Node: " + node);
        }
    }
}