(************************************************************************)
(* This file is part of SKS.  SKS 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307
   USA *)
(***********************************************************************)

open StdLabels
open MoreLabels
module Unix=UnixLabels

open Printf

module type MsgMarshal =
sig
  type msg_t
  val marshal: Channel.out_channel_obj -> msg_t -> unit
  val unmarshal: Channel.in_channel_obj -> msg_t
  val to_string: msg_t -> string
  val print: string -> unit
end

module Container =
  functor (Msg:MsgMarshal) ->
struct

  type msg_container = 
      { msg: Msg.msg_t;
	(* nonce: int; *)
      }

  let marshal_noflush cout msg = 
    Msg.print (sprintf "Marshalling: %s" (Msg.to_string msg));
    Msg.marshal cout#upcast msg

  let marshal cout msg = 
    marshal_noflush cout msg;
    cout#flush

  let unmarshal cin = 
    let msg = Msg.unmarshal cin#upcast in
    Msg.print (sprintf "Unmarshalling: %s" (Msg.to_string msg));
    { msg = msg; }

end