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open Api
open Vectors

exception Trap of string

let none = Ctypes.from_voidp Types.Trap.t Ctypes.null

let from_string store str =
  let msg = Message.from_string str in
  Functions.Trap.new_ store (Ctypes.addr msg)

let message trap =
  let msg = Message.empty () in
  Functions.Trap.message trap (Ctypes.addr msg) ;
  Message.to_string msg

let check trap =
  if not (Ctypes.is_null trap) then (
    let msg = message trap in
    Functions.Trap.delete trap ;
    raise (Trap msg))