Remove old attempt to add a variable to each pattern at compile time

compile/compile.ml

@@ -181,18 +181,10 @@ and compile_branches env (brs : Typed.branches) =
 (* p_i / t_i -> br.Typed.br_pat / br.Typed.br_type 
  * p_i / t_i is used here to add elements to env.gamma *)
 and compile_branch env br =
-  (* We add a fresh variable "pat<nb>:x" for each pattern *)
-  let t, fv, d = br.Typed.br_pat.Patterns.descr in
-  let fv, d = incr Patterns.counter;
-    let freshname = "pat" ^ (string_of_int !Patterns.counter) ^ ":x" in
-    let fv = fv @ [!Patterns.counter, freshname] in
-    fv, Patterns.Cap((Types.any, fv, Patterns.Capture(!Patterns.counter, freshname)), (t, fv, d))
-  in
-  let pat = { br.Typed.br_pat with Patterns.descr=(t,fv,d); Patterns.fv=fv } in
-  let env = List.fold_left enter_local env fv in
-  let m = Patterns.filter (Types.descr (Patterns.accept pat)) pat in
+  let env = List.fold_left enter_local env (Patterns.fv br.Typed.br_pat) in
+  let m = Patterns.filter (Types.descr (Patterns.accept br.Typed.br_pat)) br.Typed.br_pat in
   let env = { env with gamma = IdMap.union_disj m env.gamma } in
-  (pat, compile env br.Typed.br_body )
+  (br.Typed.br_pat, compile env br.Typed.br_body)
 
 let enter_globals env n =  match env.cu with
   | None -> List.fold_left enter_global_toplevel env n

types/patterns.ml

@@ -370,13 +370,10 @@ x=(1,2)
       | Cup ((a1,_,_) as p1,p2) ->
 	  approx_var seen p2 (Types.diff t a1)
 	    (approx_var seen p1 (Types.cap t a1) xs) 
-      | Cap ((_,fv1,d1) as p1,((_,fv2,d2) as p2)) ->
-	(match d1 with
-	  | Capture(_, name) when Str.string_match (Str.regexp "pat[0-9]+:") (Encodings.Utf8.get_str name) 0 ->
-	    (match d2 with | Constr _ -> fv2 | _ -> approx_var seen p2 t xs)
-	  | _ -> IdSet.cup
-	    (approx_var seen p1 t (IdSet.cap fv1 xs))
-	    (approx_var seen p2 t (IdSet.cap fv2 xs)))
+      | Cap ((_,fv1,_) as p1,((_,fv2,_) as p2)) ->
+	IdSet.cup
+	  (approx_var seen p1 t (IdSet.cap fv1 xs))
+	  (approx_var seen p2 t (IdSet.cap fv2 xs))
       | Capture _ ->
 	  xs
       | Constant (_,c) ->