X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=helm%2Focaml%2Fcic_omdoc%2Feta_fixing.ml;h=68dec37d6b04230f1468665e0a6f77516ccdb365;hb=4167cea65ca58897d1a3dbb81ff95de5074700cc;hp=9b20729103b37a0061d4f54a5b72cf4c9456b85a;hpb=68d0e8729398bdb485670ed6d0e247af64d934fc;p=helm.git

diff --git a/helm/ocaml/cic_omdoc/eta_fixing.ml b/helm/ocaml/cic_omdoc/eta_fixing.ml
index 9b2072910..68dec37d6 100644
--- a/helm/ocaml/cic_omdoc/eta_fixing.ml
+++ b/helm/ocaml/cic_omdoc/eta_fixing.ml
@@ -23,9 +23,7 @@
  * http://cs.unibo.it/helm/.
  *)
 
-exception ReferenceToVariable;;
-exception RferenceToCurrentProof;;
-exception ReferenceToInductiveDefinition;;
+exception ReferenceToNonVariable;;
 
 let prerr_endline _ = ();;
 
@@ -132,7 +130,11 @@ let fix_according_to_type ty hd tl =
   let rec aux n ty tl res =
     if n = 0 then
       (match tl with 
-         [] -> C.Appl res
+         [] ->
+          (match res with
+              [] -> assert false
+            | [res] -> res
+            | _ -> C.Appl res)
        | _ -> 
           match res with
             [] -> assert false
@@ -163,7 +165,7 @@ let fix_according_to_type ty hd tl =
   aux expected_arity ty tl [hd]
 ;;
 
-let eta_fix metasenv t =
+let eta_fix metasenv context t =
  let rec eta_fix' context t = 
   (* prerr_endline ("entering aux with: term=" ^ CicPp.ppterm t); 
   flush stderr ; *)
@@ -172,16 +174,11 @@ let eta_fix metasenv t =
   match t with
      C.Rel n -> C.Rel n 
    | C.Var (uri,exp_named_subst) ->
-      let exp_named_subst' =
-       List.map
-        (function i,t -> i, (eta_fix' context t)) exp_named_subst
-      in
-      C.Var (uri,exp_named_subst')
+      let exp_named_subst' = fix_exp_named_subst context exp_named_subst in
+       C.Var (uri,exp_named_subst')
    | C.Meta (n,l) ->
-      let (_,canonical_context,_) =
-       List.find (function (m,_,_) -> n = m) metasenv
-       in
-       let l' =
+      let (_,canonical_context,_) = CicUtil.lookup_meta n metasenv in
+      let l' =
         List.map2
          (fun ct t ->
           match (ct, t) with
@@ -209,48 +206,43 @@ let eta_fix metasenv t =
        (match l' with
            [] -> assert false
          | he::tl ->
-            let ty = CicTypeChecker.type_of_aux' metasenv context he in
-             fix_according_to_type ty he tl
+            let ty,_ = 
+              CicTypeChecker.type_of_aux' metasenv context he 
+		CicUniv.empty_ugraph 
+	    in
+              fix_according_to_type ty he tl
 (*
          C.Const(uri,exp_named_subst)::l'' ->
            let constant_type =
              (match CicEnvironment.get_obj uri with
                C.Constant (_,_,ty,_) -> ty
              | C.Variable _ -> raise ReferenceToVariable
-             | C.CurrentProof (_,_,_,_,params) -> raise RferenceToCurrentProof
+             | C.CurrentProof (_,_,_,_,params) -> raise ReferenceToCurrentProof
              | C.InductiveDefinition _ -> raise ReferenceToInductiveDefinition
              ) in 
            fix_according_to_type 
              constant_type (C.Const(uri,exp_named_subst)) l''
         | _ -> C.Appl l' *))
    | C.Const (uri,exp_named_subst) ->
-       let exp_named_subst' =
-       List.map
-        (function i,t -> i, (eta_fix' context t)) exp_named_subst
-       in
-       C.Const (uri,exp_named_subst')
+       let exp_named_subst' = fix_exp_named_subst context 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, (eta_fix' context t)) exp_named_subst
-       in
+       let exp_named_subst' = fix_exp_named_subst context 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, (eta_fix' context t)) exp_named_subst
-       in
+       let exp_named_subst' = fix_exp_named_subst context exp_named_subst in
         C.MutConstruct (uri, tyno, consno, exp_named_subst')
    | C.MutCase (uri, tyno, outty, term, patterns) as prima ->
        let outty' =  eta_fix' context outty in
        let term' = eta_fix' context term in
        let patterns' = List.map (eta_fix' context) patterns in
        let inductive_types,noparams =
-           (match CicEnvironment.get_obj uri with
+	 let o,_ = CicEnvironment.get_obj CicUniv.empty_ugraph uri in
+           (match o with
                Cic.Constant _ -> assert false
              | Cic.Variable _ -> assert false
              | Cic.CurrentProof _ -> assert false
-             | Cic.InductiveDefinition (l,_,n) -> l,n 
+             | Cic.InductiveDefinition (l,_,n,_) -> l,n 
            ) in
        let (_,_,_,constructors) = List.nth inductive_types tyno in
        let constructor_types = 
@@ -264,9 +256,10 @@ let eta_fix metasenv t =
           if noparams = 0 then 
             List.map (fun (_,t) -> t) constructors 
           else 
-	         let term_type = 
-            CicTypeChecker.type_of_aux' metasenv context term
-           in
+	    let term_type,_ = 
+              CicTypeChecker.type_of_aux' metasenv context term
+		CicUniv.empty_ugraph 
+            in
             (match term_type with
                C.Appl (hd::params) -> 
                  let rec first_n n l =
@@ -298,17 +291,21 @@ let eta_fix metasenv t =
         List.map
          (fun (name, ty, bo) ->
            (name, eta_fix' context ty, eta_fix' (fun_types@context) bo)) funs)
-   in
-   eta_fix' [] t
+  and fix_exp_named_subst context exp_named_subst =
+   List.rev
+    (List.fold_left
+      (fun newsubst (uri,t) ->
+        let t' = eta_fix' context t in
+        let ty =
+	  let o,_ = CicEnvironment.get_obj CicUniv.empty_ugraph uri in
+            match o with
+		Cic.Variable (_,_,ty,_,_) -> 
+		  CicSubstitution.subst_vars newsubst ty
+              | _ ->  raise ReferenceToNonVariable 
+	in
+        let t'' = fix_according_to_type ty t' [] in
+         (uri,t'')::newsubst
+      ) [] exp_named_subst)
+  in
+   eta_fix' context t
 ;;
-
-
-
-
-
-
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-
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-
-