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 <?php
 /**
  * Zend Framework
  *
  * LICENSE
  *
  * This source file is subject to the new BSD license that is bundled
  * with this package in the file LICENSE.txt.
  * It is also available through the world-wide-web at this URL:
  * http://framework.zend.com/license/new-bsd
  * If you did not receive a copy of the license and are unable to
  * obtain it through the world-wide-web, please send an email
  * to license@zend.com so we can send you a copy immediately.
  *
  * @category   Zend
  * @package    Zend_Markup
  * @copyright  Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
  * @license    http://framework.zend.com/license/new-bsd     New BSD License
  * @version    $Id$
  */
 
 /**
  * @see Zend_Markup_Token
  */
 // require_once 'Zend/Markup/Token.php';
 
 /**
  * @category   Zend
  * @package    Zend_Markup
  * @copyright  Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
  * @license    http://framework.zend.com/license/new-bsd     New BSD License
  */
 class Zend_Markup_TokenList implements RecursiveIterator
 {
 
     /**
      * Array of tokens
      *
      * @var array
      */
     protected $_tokens = array();
 
     /**
      * Get the current token
      *
      * @return Zend_Markup_Token
      */
     public function current()
     {
         return current($this->_tokens);
     }
 
     /**
      * Get the children of the current token
      *
      * @return Zend_Markup_TokenList
      */
     public function getChildren()
     {
         return current($this->_tokens)->getChildren();
     }
 
     /**
      * Add a new child token
      *
      * @param Zend_Markup_Token $child
      *
      * @return void
      */
     public function addChild(Zend_Markup_Token $child)
     {
         $this->_tokens[] = $child;
     }
 
     /**
      * Check if the current token has children
      *
      * @return bool
      */
     public function hasChildren()
     {
         return current($this->_tokens)->hasChildren();
     }
 
     /**
      * Get the key of the current token
      *
      * @return int
      */
     public function key()
     {
         return key($this->_tokens);
     }
 
     /**
      * Go to the next token
      *
      * @return Zend_Markup_Token
      */
     public function next()
     {
         return next($this->_tokens);
     }
 
     /**
      * Rewind the iterator
      *
      * @return void
      */
     public function rewind()
     {
         reset($this->_tokens);
     }
 
     /**
      * Check if the element is valid
      *
      * @return void
      */
     public function valid()
     {
         return $this->current() !== false;
     }
 }