X-Git-Url: http://git.nguyen.vg/gitweb/?a=blobdiff_plain;f=src%2Fuid.ml;fp=src%2Fuid.ml;h=46b86587695ccfab71fe506452268c44584ec25b;hb=cba2938d929fd5119b1491686ddc224d5af618c6;hp=0000000000000000000000000000000000000000;hpb=0cf8def92c8c6e708ec333b13dbe46decf554d81;p=tatoo.git

diff --git a/src/uid.ml b/src/uid.ml
new file mode 100644
index 0000000..46b8658
--- /dev/null
+++ b/src/uid.ml
@@ -0,0 +1,29 @@
+(***********************************************************************)
+(*                                                                     *)
+(*                               TAToo                                 *)
+(*                                                                     *)
+(*                     Kim Nguyen, LRI UMR8623                         *)
+(*                   Université Paris-Sud & CNRS                       *)
+(*                                                                     *)
+(*  Copyright 2010-2012 Université Paris-Sud and Centre National de la *)
+(*  Recherche Scientifique. All rights reserved.  This file is         *)
+(*  distributed under the terms of the GNU Lesser General Public       *)
+(*  License, with the special exception on linking described in file   *)
+(*  ../LICENSE.                                                        *)
+(*                                                                     *)
+(***********************************************************************)
+
+type t = int
+
+exception Overflow
+let make_maker () =
+  let _id = ref ~-1 in
+    fun () ->
+      incr _id;
+      let i = !_id in
+      if i < 0 then raise Overflow else i
+
+let dummy = -1
+
+external to_int : t -> int = "%identity"
+external of_int : int -> t= "%identity"