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(************************************************************************)
(* v * The Coq Proof Assistant / The Coq Development Team *)
(* <O___,, * CNRS-Ecole Polytechnique-INRIA Futurs-Universite Paris Sud *)
(* \VV/ **************************************************************)
(* // * This file is distributed under the terms of the *)
(* * GNU Lesser General Public License Version 2.1 *)
(************************************************************************)
(* $Id: dyn.ml 5920 2004-07-16 20:01:26Z herbelin $ *)
open Util
(* Dynamics, programmed with DANGER !!! *)
type t = string * Obj.t
let dyntab = ref ([] : string list)
let create s =
if List.mem s !dyntab then
anomaly ("Dyn.create: already declared dynamic " ^ s);
dyntab := s :: !dyntab;
((fun v -> (s,Obj.repr v)),
(fun (s',rv) ->
if s = s' then Obj.magic rv else failwith "dyn_out"))
let tag (s,_) = s
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