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    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.nodes;
    18
    19  /**
    20   * Stores one key value pair used in a map.
    21   */
    22  public final class NodeTuple {
    23
    24      private final Node keyNode;
    25      private final Node valueNode;
    26
    27      public NodeTuple(Node keyNode, Node valueNode) {
    28          if (keyNode == null || valueNode == null) {
    29              throw new NullPointerException("Nodes must be provided.");
    30          }
    31          this.keyNode = keyNode;
    32          this.valueNode = valueNode;
    33      }
    34
    35      /**
    36       * Key node.
    37       */
    38      final public Node getKeyNode() {
    39          return keyNode;
    40      }
    41
    42      /**
    43       * Value node.
    44       *
    45       * @return value
    46       */
    47      final public Node getValueNode() {
    48          return valueNode;
    49      }
    50
    51      @Override
    52      public String toString() {
    53          return "<NodeTuple keyNode=" + keyNode.toString() + "; valueNode=" + valueNode.toString()
    54                  + ">";
    55      }
    56  }