let clean_up_local_context subst metasenv n l =
let cc =
(try
- let (cc,_) = lookup_subst n subst in cc
+ let (cc,_,_) = lookup_subst n subst in cc
with Subst_not_found _ ->
try
let (_,cc,_) = lookup_meta n metasenv in cc
is_closed 0
;;
-(* CPS iterators on Cic.term ************************************************)
+let rec is_meta_closed =
+ function
+ Cic.Rel _ -> true
+ | Cic.Meta _ -> false
+ | Cic.Sort _ -> true
+ | Cic.Implicit _ -> assert false
+ | Cic.Cast (te,ty) -> is_meta_closed te && is_meta_closed ty
+ | Cic.Prod (name,so,dest) -> is_meta_closed so && is_meta_closed dest
+ | Cic.Lambda (_,so,dest) -> is_meta_closed so && is_meta_closed dest
+ | Cic.LetIn (_,so,dest) -> is_meta_closed so && is_meta_closed dest
+ | Cic.Appl l ->
+ List.fold_right (fun x i -> i && is_meta_closed x) l true
+ | Cic.Var (_,exp_named_subst)
+ | Cic.Const (_,exp_named_subst)
+ | Cic.MutInd (_,_,exp_named_subst)
+ | Cic.MutConstruct (_,_,_,exp_named_subst) ->
+ List.fold_right (fun (_,x) i -> i && is_meta_closed x)
+ exp_named_subst true
+ | Cic.MutCase (_,_,out,te,pl) ->
+ is_meta_closed out && is_meta_closed te &&
+ List.fold_right (fun x i -> i && is_meta_closed x) pl true
+ | Cic.Fix (_,fl) ->
+ List.fold_right
+ (fun (_,_,ty,bo) i -> i && is_meta_closed ty && is_meta_closed bo
+ ) fl true
+ | Cic.CoFix (_,fl) ->
+ List.fold_right
+ (fun (_,ty,bo) i -> i && is_meta_closed ty && is_meta_closed bo
+ ) fl true
+;;
-let rec visit_l visit_t map f r = function
- | [] -> f r
- | h :: tail ->
- let f r = visit_l visit_t map f r tail in
- visit_t f r (map h)
+let xpointer_RE = Str.regexp "\\([^#]+\\)#xpointer(\\(.*\\))"
+let slash_RE = Str.regexp "/"
+
+let term_of_uri s =
+ let uri = UriManager.uri_of_string s in
+ try
+ (if String.sub s (String.length s - 4) 4 = ".con" then
+ Cic.Const (uri, [])
+ else if String.sub s (String.length s - 4) 4 = ".var" then
+ Cic.Var (uri, [])
+ else if not (Str.string_match xpointer_RE s 0) then
+ raise (UriManager.IllFormedUri s)
+ else
+ let (baseuri,xpointer) = (Str.matched_group 1 s, Str.matched_group 2 s) in
+ let baseuri = UriManager.uri_of_string baseuri in
+ (match Str.split slash_RE xpointer with
+ | [_; tyno] -> Cic.MutInd (baseuri, int_of_string tyno - 1, [])
+ | [_; tyno; consno] ->
+ Cic.MutConstruct
+ (baseuri, int_of_string tyno - 1, int_of_string consno, [])
+ | _ -> raise Exit))
+ with
+ | Exit
+ | Failure _
+ | Not_found -> raise (UriManager.IllFormedUri s)
-let meta_closed t =
- let rec visit_t f r = function
- | Cic.Meta _ -> raise Exit
- | Cic.Implicit _
- | Cic.Sort _
- | Cic.Rel _ -> f r
- | Cic.Cast (t, u)
- | Cic.Prod (_, t, u)
- | Cic.Lambda (_, t, u)
- | Cic.LetIn (_, t, u) ->
- let f r = visit_t f r u in visit_t f r t
- | Cic.Appl tl ->
- visit_l visit_t (fun x -> x) f r tl
- | Cic.Fix (_, tl) ->
- let f r = visit_l visit_t (fun (_, _, _, u) -> u) f r tl in
- visit_l visit_t (fun (_, _, t, _) -> t) f r tl
- | Cic.CoFix (_, tl) ->
- let f r = visit_l visit_t (fun (_, _, u) -> u) f r tl in
- visit_l visit_t (fun (_, t, _) -> t) f r tl
- | Cic.Var (k, tl)
- | Cic.Const (k, tl)
- | Cic.MutInd (k, _, tl)
- | Cic.MutConstruct (k, _, _, tl) ->
- visit_l visit_t (fun (_, u) -> u) f r tl
- | Cic.MutCase (_, _, t, u, tl) ->
- let f r = visit_l visit_t (fun u -> u) f r tl in
- let f r = visit_t f r u in
- visit_t f r t
- in
- try visit_t (fun x -> x) () t; false with Exit -> true