File indexing completed on 2024-05-12 06:02:04

 <?php
 
 /**
  * Definition that allows a set of elements, and allows no children.
  * @note This is a hack to reuse code from HTMLPurifier_ChildDef_Required,
  *       really, one shouldn't inherit from the other.  Only altered behavior
  *       is to overload a returned false with an array.  Thus, it will never
  *       return false.
  */
 class HTMLPurifier_ChildDef_Optional extends HTMLPurifier_ChildDef_Required
 {
     /**
      * @type bool
      */
     public $allow_empty = true;
 
     /**
      * @type string
      */
     public $type = 'optional';
 
     /**
      * @param array $children
      * @param HTMLPurifier_Config $config
      * @param HTMLPurifier_Context $context
      * @return array
      */
     public function validateChildren($children, $config, $context)
     {
         $result = parent::validateChildren($children, $config, $context);
         // we assume that $children is not modified
         if ($result === false) {
             if (empty($children)) {
                 return true;
             } elseif ($this->whitespace) {
                 return $children;
             } else {
                 return array();
             }
         }
         return $result;
     }
 }
 
 // vim: et sw=4 sts=4