X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=helm%2Fsoftware%2Flambda-delta%2Fbasic_rg%2FbrgEnvironment.ml;h=5a4cf3cb6d0875cbda2ea881e68fb4c0160ba0d4;hb=34c2ba63c8eb5fccfd9a1fb8ac1df5895c8b58b3;hp=b0cb9596e3ea2848b5d36029a2e4f24e3131dd9e;hpb=25fba20748a951f7061188cc5fabece8f5ac97b9;p=helm.git

diff --git a/helm/software/lambda-delta/basic_rg/brgEnvironment.ml b/helm/software/lambda-delta/basic_rg/brgEnvironment.ml
index b0cb9596e..5a4cf3cb6 100644
--- a/helm/software/lambda-delta/basic_rg/brgEnvironment.ml
+++ b/helm/software/lambda-delta/basic_rg/brgEnvironment.ml
@@ -11,23 +11,24 @@
 
 module U = NUri
 module H = U.UriHash
+module Y = Entity
 module B = Brg
 
-exception ObjectNotFound of string Lazy.t
-
 let hsize = 7000 
 let env = H.create hsize
-let entry = ref 0
 
 (* Internal functions *******************************************************)
 
+let get_age = 
+   let age = ref 0 in
+   fun () -> incr age; !age
+
 (* Interface functions ******************************************************)
 
-let set_obj f obj =
-   let _, uri, b, t = obj in
-   let obj = !entry, uri, b, t in
-   incr entry; H.add env uri obj; f obj
+let set_entity f (a, uri, b) =
+   let age = get_age () in
+   let entity = (Y.Apix age :: a), uri, b in
+   H.add env uri entity; f entity
 
-let get_obj f uri =
-   try f (H.find env uri)
-   with Not_found -> raise (ObjectNotFound (lazy (U.string_of_uri uri)))
+let get_entity err f uri =
+   try f (H.find env uri) with Not_found -> err ()