(** Very small tooling for format printers. *)

include Format

type 'a t = Format.formatter -> 'a -> unit

let list = pp_print_list
let str = pp_print_string
let sexp fmt s pp x = fprintf fmt "@[<3>(%s@ %a)@]" s pp x
let pair pp1 pp2 fmt (v1,v2) =
  pp1 fmt v1; pp_print_space fmt () ; pp2 fmt v2
let triple pp1 pp2 pp3 fmt (v1, v2, v3) =
  pp1 fmt v1; pp_print_space fmt () ;
  pp2 fmt v2; pp_print_space fmt () ;
  pp3 fmt v3
let int = pp_print_int
let optint fmt = function
  | None -> ()
  | Some i -> fprintf fmt "@ %d" i

let quote fmt s = Format.fprintf fmt "\"%s\"" s

let pp_olist pp_elem fmt =
  Format.fprintf fmt "@[<3>[@ %a@ ]@]"
    (pp_print_list
       ~pp_sep:(fun fmt () -> fprintf fmt ";@ ")
       pp_elem)

let pp_str_list = pp_olist quote

let to_to_string pp x =
  let b = Buffer.create 16 in
  let fmt = Format.formatter_of_buffer b in
  pp fmt x;
  Buffer.contents b