shithub: martian9

ref: d7be189053b324fd57d4ca0ad2cbfa560d4c7876
dir: /printer.ml/

module T = Types.Types

let meta obj =
  match obj with
  | T.List { T.meta } -> meta
  | T.Proc { T.meta } -> meta
  | T.Symbol { T.meta } -> meta
  | T.Vector { T.meta } -> meta
  | T.Record { T.meta } -> meta
  | _ -> T.Nil

let rec print obj readable =
  let r = readable in
  match obj with
  | T.Bool true -> "#t"
  | T.Bool false -> "#f"
  | T.Char c -> Char.escaped c
  | T.Nil -> "nil"
  | T.Comment -> "" (* TODO: this leaves a space in the output for block comments *)
  (* | T.Pair { T.value = one, two } -> "(" ^ one ^ " . " ^ two ^ ")" *)
  | T.Pair (p, q) -> "<pair unsupported>"
  | T.Proc p -> "#<proc>"
  | T.Symbol {T.value = s} -> s
  | T.Bytevector bv -> "<bytevector unsupported>"
  | T.Eof_object -> "<eof>"
  | T.Number n -> string_of_int n
  | T.Port p -> "<port unsupported>"
  | T.String s -> s (* need to handle escaping and stuff *)
  | T.List { T.value = xs } ->
     "(" ^ (String.concat " " (List.map (fun s -> print s r) xs)) ^ ")"
  | T.Vector {T.value = v} -> "#(" ^ (String.concat " " (List.map (fun s -> print s r) v)) ^ ")"
  | T.Record r -> "<record supported>"