X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=helm%2Focaml%2Ftactics%2FproofEngineTypes.ml;h=e90e438071a408f82d7bca335312334f674d91eb;hb=8aaf525856e25bcd8f355e505fd00f45c62bc18f;hp=ac0713bd057dc364c44a193f71cb1b475a14e564;hpb=655906d74521fa49de332f54ec34bfc9d9744151;p=helm.git

diff --git a/helm/ocaml/tactics/proofEngineTypes.ml b/helm/ocaml/tactics/proofEngineTypes.ml
index ac0713bd0..e90e43807 100644
--- a/helm/ocaml/tactics/proofEngineTypes.ml
+++ b/helm/ocaml/tactics/proofEngineTypes.ml
@@ -31,6 +31,21 @@ type proof = UriManager.uri option * Cic.metasenv * Cic.term * Cic.term
 type goal = int
 type status = proof * goal
 
+let initial_status ty metasenv =
+  let rec aux max = function
+    | [] -> max + 1
+    | (idx, _, _) :: tl ->
+        if idx > max then
+          aux idx tl
+        else
+          aux max tl
+  in
+  let newmeta_idx = aux 0 metasenv in
+  let proof =
+    None, (newmeta_idx, [], ty) :: metasenv, Cic.Meta (newmeta_idx, []), ty
+  in
+  (proof, newmeta_idx)
+
   (**
     a tactic: make a transition from one status to another one or, usually,
     raise a "Fail" (@see Fail) exception in case of failure
@@ -49,10 +64,7 @@ exception Fail of string
     universe graph if the tactic Fails
   *)
 let apply_tactic t status = 
-  let saved_univ = CicUniv.get_working() in
-  try 
-    t status
-  with Fail s -> CicUniv.set_working saved_univ; raise (Fail s)
+  t status
 
   (** constraint: the returned value will always be constructed by Cic.Name **)
 type mk_fresh_name_type =