/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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.
 */

import Node from './Node'
import { uniqueId } from '../utils'

export default class Comment extends Node {
  constructor (value) {
    super()

    this.nodeType = 8
    this.nodeId = uniqueId()
    this.ref = this.nodeId
    this.type = 'comment'
    this.value = value
    this.children = []
    this.pureChildren = []
  }

  /**
  * Convert to HTML comment string.
  * @return {stirng} html
  */
  toString () {
    return '<!-- ' + this.value + ' -->'
  }
}