type location = {start_pos : int * int;end_pos : int * int;filename : string;
}val pp_location :
Ppx_deriving_runtime.Format.formatter ->
location ->
Ppx_deriving_runtime.unitval show_location : location -> Ppx_deriving_runtime.stringval to_code_position :
(Stdlib.Lexing.position * Stdlib.Lexing.position * string) ->
location