function get_args( array $consts, array $vars ){
		$args = array();
		// limit depth of search to avoid collecting nested func calls
		$argnodes = $this->get_nodes_by_symbol( NT_ARG, 3 );
		foreach( $argnodes as $i => $arg ){
			$args[] = $arg->compile_string( $consts, $vars );
		}
		return $args;
	}