code: function parse_all() {
  		$this->errors = array();
  		$this->status['last_pos'] = -1;
  
  		if (($this->token === self::TOK_TAG_OPEN) || ($this->next_pos('<', false) === self::TOK_UNKNOWN)) {
  			do {
  				if (!$this->parse_tag()) {
  					return false;
  				}
  			} while ($this->next_pos('<') !== self::TOK_NULL);
  		}
  
  		$this->pos = $this->size;
  		$this->parse_text();
  
  		return true;
  	}
docs: Parse full document
  @return bool