CoercDb.Fun arity
| _ -> assert false
in
- let already_in =
+ let already_in_obj src_carr tgt_carr uri obj =
List.exists
(fun (s,t,ul) ->
List.exists
(fun u ->
- UriManager.eq u uri &&
+ let bo =
+ match obj with
+ | Cic.Constant (_, Some bo, _, _, _) -> bo
+ | _ -> assert false
+ in
CoercDb.eq_carr s src_carr &&
- CoercDb.eq_carr t tgt_carr)
+ CoercDb.eq_carr t tgt_carr &&
+ if fst (CicReduction.are_convertible [] (CicUtil.term_of_uri u) bo
+ CicUniv.oblivion_ugraph)
+ then true else
+ (HLog.warn
+ ("Coercions " ^
+ UriManager.string_of_uri u ^ " and " ^ UriManager.string_of_uri
+ uri^" are not convertible, but are between the same nodes.\n"^
+ "From now on nification can fail randomly.");
+ false))
ul)
(CoercDb.to_list ())
in
CicCoercion.close_coercion_graph refinement_toolkit src_carr tgt_carr uri
baseuri
in
+ let new_coercions =
+ List.filter (fun (s,t,u,obj) -> not(already_in_obj s t u obj))
+ new_coercions
+ in
let composite_uris = List.map (fun (_,_,uri,_) -> uri) new_coercions in
- if already_in then
- (* this if starts here just to be sure the closure function works fine *)
- begin
- assert (new_coercions = []);
- HLog.warn
- (UriManager.string_of_uri uri ^
- " is already declared as a coercion! skipping...");
- []
- end
- else
- begin
- (* update the DB *)
- List.iter
- (fun (src,tgt,uri,_) -> CoercDb.add_coercion (src,tgt,uri))
- new_coercions;
- CoercDb.add_coercion (src_carr, tgt_carr, uri);
- (* add the composites obj and they eventual lemmas *)
- let lemmas =
- if add_composites then
- List.fold_left
- (fun acc (_,_,uri,obj) ->
- add_single_obj uri obj refinement_toolkit;
- uri::acc)
- [] new_coercions
- else
- []
- in
- (* store that composite_uris are related to uri. the first component is
- * the stuff in the DB while the second is stuff for remove_obj *)
- (*
- prerr_endline ("adding: " ^
- string_of_bool add_composites ^ UriManager.string_of_uri uri);
- List.iter (fun u -> prerr_endline (UriManager.string_of_uri u))
- composite_uris;
- *)
- UriManager.UriHashtbl.add coercion_hashtbl uri
- (composite_uris,if add_composites then composite_uris else []);
- (*
- prerr_endline ("lemmas:");
- List.iter (fun u -> prerr_endline (UriManager.string_of_uri u))
- lemmas;
- prerr_endline ("lemmas END");*)
- lemmas
- end
+ (* update the DB *)
+ List.iter
+ (fun (src,tgt,uri,_) -> CoercDb.add_coercion (src,tgt,uri))
+ new_coercions;
+ CoercDb.add_coercion (src_carr, tgt_carr, uri);
+ (* add the composites obj and they eventual lemmas *)
+ let lemmas =
+ if add_composites then
+ List.fold_left
+ (fun acc (_,tgt,uri,obj) ->
+ add_single_obj uri obj refinement_toolkit;
+ let arity = match tgt with CoercDb.Fun n -> n | _ -> 0 in
+ (uri,arity)::acc)
+ [] new_coercions
+ else
+ []
+ in
+ (* store that composite_uris are related to uri. the first component is
+ * the stuff in the DB while the second is stuff for remove_obj *)
+ (*
+ prerr_endline ("adding: " ^
+ string_of_bool add_composites ^ UriManager.string_of_uri uri);
+ List.iter (fun u -> prerr_endline (UriManager.string_of_uri u))
+ composite_uris;
+ *)
+ UriManager.UriHashtbl.add coercion_hashtbl uri
+ (composite_uris,if add_composites then composite_uris else []);
+ (*
+ prerr_endline ("lemmas:");
+ List.iter (fun u -> prerr_endline (UriManager.string_of_uri u))
+ lemmas;
+ prerr_endline ("lemmas END");*)
+ lemmas
;;
let remove_coercion uri =
if coercion then
begin
(*prerr_endline ("composite for " ^ UriManager.string_of_uri uri);*)
+ (*CSC: I think there is a bug here. The composite coercions
+ are not remembered in the .moo file. Thus they are re-generated
+ every time. Right? *)
let x =
add_coercion ~add_composites:true refinement_toolkit uri arity
(UriManager.buri_of_uri uri)
List.iter (fun u -> prerr_endline (UriManager.string_of_uri u)) x;
prerr_endline "---";
*)
- x
+ (*CSC: I throw the arity away. See comment above *)
+ List.map fst x
end
else
[]