branch for universe

[helm.git] / components / ng_kernel / nCic2OCic.ml

diff --git a/components/ng_kernel/nCic2OCic.ml b/components/ng_kernel/nCic2OCic.ml
new file mode 100644 (file)
index 0000000..4686922
--- /dev/null
+++ b/components/ng_kernel/nCic2OCic.ml
@@ -0,0 +1,87 @@
+let nn_2_on = function
+  | "_" -> Cic.Anonymous
+  | s -> Cic.Name s
+;;
+
+let convert_term uri n_fl t =
+ let rec convert_term k = function (* pass k along *)
+ | NCic.Rel i -> Cic.Rel i
+ | NCic.Meta _ -> assert false
+ | NCic.Appl l -> Cic.Appl (List.map (convert_term k) l)
+ | NCic.Prod (n,s,t) -> 
+     Cic.Prod (nn_2_on n,convert_term k s, convert_term (k+1) t)
+ | NCic.Lambda  (n,s,t) -> 
+     Cic.Lambda(nn_2_on n,convert_term k s, convert_term (k+1) t)
+ | NCic.LetIn (n,ty_s,s,t) -> 
+     Cic.LetIn (nn_2_on n,convert_term k s,convert_term k ty_s, convert_term (k+1) t)
+ | NCic.Sort NCic.Prop -> Cic.Sort Cic.Prop 
+ | NCic.Sort NCic.CProp -> Cic.Sort Cic.CProp 
+ | NCic.Sort (NCic.Type _) -> Cic.Sort (Cic.Type (CicUniv.fresh ()))
+ | NCic.Implicit _ -> assert false
+ | NCic.Const (NReference.Ref (_,u,NReference.Ind i)) -> 
+     Cic.MutInd (NUri.ouri_of_nuri u,i,[])
+ | NCic.Const (NReference.Ref (_,u,NReference.Con (i,j))) -> 
+     Cic.MutConstruct (NUri.ouri_of_nuri u,i,j,[])
+ | NCic.Const (NReference.Ref (_,u,NReference.Def))
+ | NCic.Const (NReference.Ref (_,u,NReference.Decl)) ->
+     Cic.Const (NUri.ouri_of_nuri u,[])
+ | NCic.Match (NReference.Ref (_,u,NReference.Ind i),oty,t,pl) ->
+     Cic.MutCase (NUri.ouri_of_nuri u,i, convert_term k oty, convert_term k t,
+       List.map (convert_term k) pl)
+ | NCic.Const (NReference.Ref (_,u,NReference.Fix (i,_))) 
+ | NCic.Const (NReference.Ref (_,u,NReference.CoFix i)) ->
+    if NUri.eq u uri then             
+      Cic.Rel (n_fl - i + k)
+    else
+     let ouri = NUri.ouri_of_nuri u in
+     let ouri =
+      UriManager.uri_of_string 
+       (UriManager.buri_of_uri ouri ^ "/" ^
+        UriManager.name_of_uri ouri ^ string_of_int i ^ ".con") in
+      Cic.Const (ouri,[])
+ | _ -> assert false
+ in
+  convert_term 0 t
+;;
+
+let convert_fix is_fix uri k fl = 
+  let n_fl = List.length fl in
+  if is_fix then 
+    let fl = 
+      List.map
+      (fun (_, name,recno,ty,bo) -> 
+        name, recno, convert_term uri n_fl ty, convert_term uri n_fl bo)
+      fl
+    in 
+     Cic.Fix (k, fl) 
+  else 
+    let fl = 
+      List.map
+      (fun (_, name,_,ty,bo) -> 
+        name, convert_term uri n_fl ty, convert_term uri n_fl bo)
+      fl
+    in 
+     Cic.CoFix (k, fl) 
+;;
+
+let convert_nobj = function 
+ | u,_,_,_,NCic.Constant (_, name, Some bo, ty, _) ->
+     [NUri.ouri_of_nuri u,Cic.Constant 
+        (name, Some (convert_term u 0 bo), convert_term u 0 ty, [],[])]
+ | u,_,_,_,NCic.Constant (_, name,  None, ty, _) ->
+     [NUri.ouri_of_nuri u,Cic.Constant (name, None, convert_term u 0 ty, [],[])]
+ | u,_,_,_,NCic.Fixpoint (is_fix, fl, _) ->
+     List.map 
+      (fun nth ->
+        let name =
+         UriManager.name_of_uri (NUri.ouri_of_nuri u) ^ string_of_int nth in
+        let buri = UriManager.buri_of_uri (NUri.ouri_of_nuri u) in
+        let uri = UriManager.uri_of_string (buri ^"/"^name^".con") in
+        uri,
+        Cic.Constant (name, 
+         Some (convert_fix is_fix u nth fl), 
+          convert_term u 0 (let _,_,_,ty,_ = List.hd fl in ty), [], []))
+     (let rec seq = function 0 -> [0]|n -> n::seq (n-1) in 
+      seq (List.length fl-1))
+ | _,_,_,_,NCic.Inductive _ -> assert false
+;;