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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  import org.yaml.snakeyaml.error.Mark;
    20
    21  /**
    22   * Represents a scalar node.
    23   * <p>
    24   * Scalar nodes form the leaves in the node graph.
    25   * </p>
    26   */
    27  public class ScalarNode extends Node {
    28      private Character style;
    29      private String value;
    30
    31      public ScalarNode(Tag tag, String value, Mark startMark, Mark endMark, Character style) {
    32          this(tag, true, value, startMark, endMark, style);
    33      }
    34
    35      public ScalarNode(Tag tag, boolean resolved, String value, Mark startMark, Mark endMark,
    36              Character style) {
    37          super(tag, startMark, endMark);
    38          if (value == null) {
    39              throw new NullPointerException("value in a Node is required.");
    40          }
    41          this.value = value;
    42          this.style = style;
    43          this.resolved = resolved;
    44      }
    45
    46      /**
    47       * Get scalar style of this node.
    48       *
    49       * @see org.yaml.snakeyaml.events.ScalarEvent
    50       * @see http://yaml.org/spec/1.1/#id864487
    51       * @return
    52       */
    53      public Character getStyle() {
    54          return style;
    55      }
    56
    57      @Override
    58      public NodeId getNodeId() {
    59          return NodeId.scalar;
    60      }
    61
    62      /**
    63       * Value of this scalar.
    64       *
    65       * @return Scalar's value.
    66       */
    67      public String getValue() {
    68          return value;
    69      }
    70
    71      public String toString() {
    72          return "<" + this.getClass().getName() + " (tag=" + getTag() + ", value=" + getValue()
    73                  + ")>";
    74      }
    75  }