sig
type result = Exp of Typed_syntax.exp | ParseError of string
val parse : string -> Typed_util.result
val parse_from_file : string -> Typed_util.result
val print_exp : Typed_syntax.exp -> unit
val string_of_exp : Typed_syntax.exp -> string
val string_of_typ : Typed_syntax.typ -> string
val print_typ : Typed_syntax.typ -> unit
end