(* wrappi
 * Copyright (C) 2011 Red Hat Inc.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 *)

open Camlp4.PreCast

open Printf

type any_type = TInt32 | TInt64 | Type of string

type parameter = string * any_type

type return_type = RErr | Return of any_type

type c_code = string

type entry_point = {
  (*ep_loc : Camlp4.PreCast.Loc.t;*)
  ep_name : string;
  ep_params : parameter list;
  ep_return : return_type;
  ep_code : c_code option;
}

let string_of_any_type = function
  | TInt32 -> "int32"
  | TInt64 -> "int64"
  | Type s -> s
let string_of_return_type = function
  | RErr -> "err"
  | Return t -> string_of_any_type t
let string_of_parameter (name, t) =
  sprintf "%s %s" (string_of_any_type t) name
let string_of_parameters params =
  "(" ^ String.concat ", " (List.map string_of_parameter params) ^ ")"
let string_of_c_code code = code
let string_of_entry_point ep =
  sprintf "entry_point %s %s %s <<%s>>"
    (*(Loc.to_string ep.ep_loc)*)
    (string_of_return_type ep.ep_return)
    ep.ep_name
    (string_of_parameters ep.ep_params)
    (match ep.ep_code with
    | None -> "/* implicit */"
    | Some code -> string_of_c_code code)