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.
/**
 * 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 org.yaml.snakeyaml.nodes;

Stores one key value pair used in a map.
/**
 * Stores one key value pair used in a map.
 */
public final class NodeTuple {

    private Node keyNode;
    private Node valueNode;

    public NodeTuple(Node keyNode, Node valueNode) {
        if (keyNode == null || valueNode == null) {
            throw new NullPointerException("Nodes must be provided.");
        }
        this.keyNode = keyNode;
        this.valueNode = valueNode;
    }

    
Key node.
Returns:
the node used as key/**
     * Key node.
     *
     * @return the node used as key
     */
    public Node getKeyNode() {
        return keyNode;
    }

    
Value node.
Returns:
node used as value/**
     * Value node.
     * 
     * @return node used as value
     */
    public Node getValueNode() {
        return valueNode;
    }

    @Override
    public String toString() {
        return "<NodeTuple keyNode=" + keyNode.toString() + "; valueNode=" + valueNode.toString()
                + ">";
    }
}