X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=ocaml%2Fpure.ml;h=11cb9af81638ca6f546cd2a7e67ed182a3f9f50c;hb=18e8638888e5e47d755a6c7c4bff37a1a6ec026b;hp=f1cac843e2349f15c1e5c4cf9c5dd00e3c05e4af;hpb=5cecab147f53f77dcf70a0f1845772d41cff1597;p=fireball-separation.git

diff --git a/ocaml/pure.ml b/ocaml/pure.ml
index f1cac84..11cb9af 100644
--- a/ocaml/pure.ml
+++ b/ocaml/pure.ml
@@ -94,6 +94,7 @@ in
    let rec aux g =
     function
     (* mmm -> print_endline (print_machine mmm); match mmm with *)
+        m when unwind m = let d = L(A(V 0, V 0)) in A(d,d) -> [], B, []
      | (e,A(t1,t2),s) ->
          let t2' = aux g (e,t2,[]) in
          let (_,t,_) = t2' in
@@ -131,6 +132,19 @@ let omega should_explode =
 
 let diverged = (=) B;;
 
+(* Note: maps only variables <= freshno *)
+let env_of_sigma freshno sigma =
+ let rec aux n =
+  if n > freshno then
+   []
+  else
+   let e = aux (n+1) in
+   (try
+    e, lift (-n-1) (snd (List.find (fun (i,_) -> i = n) sigma)),[]
+   with
+    Not_found -> ([], V n, []) ) :: e
+ in aux 0
+
 end
 
 module Scott =