function __construct($location, $expression = null) { $this->expression = $expression; parent::__construct($location); }
function __construct($location, $text) { parent::__construct($location); $this->contents = $text; }
function __construct($location, $tag, $tag_info) { $this->tag = $tag; $this->tag_info = $tag_info; parent::__construct($location); }