public function __construct()
 {
     $this->ci =& get_instance();
     if (!is_array(self::$parser_config)) {
         if ($this->ci->config->load('parser_lex', TRUE, TRUE)) {
             self::$parser_config = $this->ci->config->item('parser_lex');
             if (!is_array(self::$parser_config)) {
                 self::$parser_config = array();
             }
         } else {
             self::$parser_config = array();
         }
     }
     $this->parser_options['scope_glue'] = $this->scopeGlue;
     $this->parser_options['cumulative_noparse'] = $this->cumulativeNoparse;
     $this->parser_options['allow_php'] = false;
 }