From: Claudio Sacerdoti Coen <claudio.sacerdoticoen@unibo.it>
Date: Tue, 8 Apr 2008 16:37:16 +0000 (+0000)
Subject: Cooked objects are no longer well typed in the uncooked old environment.
X-Git-Tag: make_still_working~5402
X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=commitdiff_plain;h=738fc3c00d293b4cff6295b54dbc801fdae58dd0;p=helm.git

Cooked objects are no longer well typed in the uncooked old environment.
Thus we need to fix_outtype before cooking.
---

diff --git a/helm/software/components/ng_kernel/oCic2NCic.ml b/helm/software/components/ng_kernel/oCic2NCic.ml
index f54f184d8..e414cfa56 100644
--- a/helm/software/components/ng_kernel/oCic2NCic.ml
+++ b/helm/software/components/ng_kernel/oCic2NCic.ml
@@ -121,6 +121,79 @@ prerr_endline ("LEFTNO: " ^ string_of_int leftno ^ "  " ^ CicPp.ppterm arity);*)
 (*prerr_endline (CicPp.ppterm outty ^ " <==> " ^ CicPp.ppterm outty');*)
 ;;
 
+let fix_outtype t =
+ let module C = Cic in
+ let rec aux context =
+  function
+     C.Rel _ as t -> t
+   | C.Var (uri,exp_named_subst) ->
+      let exp_named_subst' =
+       List.map (function i,t -> i, (aux context t)) exp_named_subst in
+        C.Var (uri,exp_named_subst')
+   | C.Implicit _
+   | C.Meta _ -> assert false
+   | C.Sort _ as t -> t
+   | C.Cast (v,t) -> C.Cast (aux context v, aux context t)
+   | C.Prod (n,s,t) ->
+        C.Prod (n, aux context s, aux ((Some (n, C.Decl s))::context) t)
+   | C.Lambda (n,s,t) ->
+       C.Lambda (n, aux context s, aux ((Some (n, C.Decl s))::context) t)
+   | C.LetIn (n,s,ty,t) ->
+      C.LetIn
+       (n, aux context s, aux context ty,
+        aux ((Some (n, C.Def(s,ty)))::context) t)
+   | C.Appl l -> C.Appl (List.map (aux context) l)
+   | C.Const (uri,exp_named_subst) ->
+      let exp_named_subst' =
+       List.map (function i,t -> i, (aux context t)) exp_named_subst
+      in
+       C.Const (uri,exp_named_subst')
+   | C.MutInd (uri,tyno,exp_named_subst) ->
+      let exp_named_subst' =
+       List.map (function i,t -> i, (aux context t)) exp_named_subst
+      in
+       C.MutInd (uri, tyno, exp_named_subst')
+   | C.MutConstruct (uri,tyno,consno,exp_named_subst) ->
+      let exp_named_subst' =
+       List.map (function i,t -> i, (aux context t)) exp_named_subst
+      in
+       C.MutConstruct (uri, tyno, consno, exp_named_subst')
+   | C.MutCase (uri, tyno, outty, term, patterns) ->
+      let outty = fix_outty uri tyno term context outty in
+       C.MutCase (uri, tyno, aux context outty,
+        aux context term, List.map (aux context) patterns)
+   | C.Fix (funno, funs) ->
+      let tys,_ =
+        List.fold_left
+          (fun (types,len) (n,_,ty,_) ->
+            ((Some (C.Name n,(C.Decl (CicSubstitution.lift len ty)))))::types,
+              len+1
+	  ) ([],0) funs
+      in
+       C.Fix (funno,
+        List.map
+         (fun (name, indidx, ty, bo) ->
+           (name, indidx, aux context ty, aux (tys@context) bo)
+         ) funs
+      )
+   | C.CoFix (funno, funs) ->
+      let tys,_ =
+        List.fold_left
+          (fun (types,len) (n,ty,_) ->
+            ((Some (C.Name n,(C.Decl (CicSubstitution.lift len ty)))))::types,
+              len+1
+	  ) ([],0) funs
+      in
+       C.CoFix (funno,
+        List.map
+         (fun (name, ty, bo) ->
+           (name, aux context ty, aux (tys@context) bo)
+         ) funs
+       )
+ in
+  aux [] t
+;;
+
 (* we are lambda-lifting also variables that do not occur *)
 (* ctx does not distinguish successive blocks of cofix, since there may be no
  *   lambda separating them *)
@@ -277,7 +350,6 @@ let convert_term uri t =
        aux_ens curi octx ctx n_fix uri ens
         (NCic.Const (Ref.reference_of_ouri curi (Ref.Con (tyno,consno))))
     | Cic.MutCase (curi, tyno, outty, t, branches) ->
-        let outty = fix_outty curi tyno t octx outty in
         let r = Ref.reference_of_ouri curi (Ref.Ind tyno) in
         let outty, fixpoints_outty = aux octx ctx n_fix uri outty in
         let t, fixpoints_t = aux octx ctx n_fix uri t in
@@ -315,6 +387,7 @@ let convert_term uri t =
 ;;
 
 let cook mode vars t =
+ let t = fix_outtype t in
  let varsno = List.length vars in
  let t = CicSubstitution.lift varsno t in
  let rec aux n acc l =
@@ -326,7 +399,8 @@ let cook mode vars t =
    | uri::uris ->
     let bo,ty =
      match fst (CicEnvironment.get_obj CicUniv.oblivion_ugraph uri) with
-        Cic.Variable (_,bo,ty,_,_) -> bo,ty
+        Cic.Variable (_,bo,ty,_,_) ->
+         HExtlib.map_option fix_outtype bo, fix_outtype ty
       | _ -> assert false in
     let ty = CicSubstitution.subst_vars subst ty in
     let bo = HExtlib.map_option (CicSubstitution.subst_vars subst) bo in