(* $Id$ *)
-exception ObjectNotFound of string Lazy.t
+exception LibraryOutOfSync of string Lazy.t
+let magic = 0;;
+
+let path_of_baseuri ?(no_suffix=false) baseuri =
+ let uri = NUri.string_of_uri baseuri in
+ let path = String.sub uri 4 (String.length uri - 4) in
+ let path = Helm_registry.get "matita.basedir" ^ path in
+ let dirname = Filename.dirname path in
+ HExtlib.mkdir dirname;
+ if no_suffix then
+ path
+ else
+ path ^ ".ng"
+;;
+
+let require_path path =
+ let ch = open_in path in
+ let mmagic,dump = Marshal.from_channel ch in
+ close_in ch;
+ if mmagic <> magic then
+ raise (LibraryOutOfSync (lazy "The library is out of sync with the implementation. Please recompile the library."))
+ else
+ dump
+;;
+
+let require0 ~baseuri = require_path (path_of_baseuri baseuri);;
+
+let db_path () = Helm_registry.get "matita.basedir" ^ "/ng_db.ng";;
+
+type timestamp =
+ (NUri.uri * NCic.obj) list *
+ (NUri.uri * string * NReference.reference) list *
+ NCic.obj NUri.UriMap.t;;
+
+let time0 = [],[],NUri.UriMap.empty;;
let storage = ref [];;
+let local_aliases = ref [];;
+let set_global_aliases,get_global_aliases =
+ let global_aliases = ref [] in
+ let store_db () =
+ let ch = open_out (db_path ()) in
+ Marshal.to_channel ch (magic,!global_aliases) [];
+ close_out ch;
+ in
+ (fun ga -> global_aliases := ga; store_db ()),
+ (fun () -> !global_aliases)
+;;
+
+let init () =
+ try
+ set_global_aliases (require_path (db_path ()))
+ with
+ Sys_error _ -> ()
+;;
+
+let cache = ref NUri.UriMap.empty;;
+
+class status =
+ object
+ val timestamp = (time0 : timestamp)
+ method timestamp = timestamp
+ method set_timestamp v = {< timestamp = v >}
+ method set_library_status
+ : 'status. < timestamp : timestamp; .. > as 'status -> 'self
+ = fun o -> {< timestamp = o#timestamp >}
+ end
+
+let time_travel status =
+ let sto,ali,cac = status#timestamp in
+ storage := sto; local_aliases := ali; cache := cac
+;;
+
+let serialize ~baseuri dump =
+ let ch = open_out (path_of_baseuri baseuri) in
+ Marshal.to_channel ch (magic,dump) [];
+ close_out ch;
+ List.iter
+ (fun (uri,obj) ->
+ let ch = open_out (path_of_baseuri uri) in
+ Marshal.to_channel ch (magic,obj) [];
+ close_out ch
+ ) !storage;
+ set_global_aliases (!local_aliases @ get_global_aliases ());
+ time_travel (new status)
+;;
+
+let refresh_uri uri = NUri.uri_of_string (NUri.string_of_uri uri);;
+
+let rec refresh_uri_in_term =
+ function
+ NCic.Const (NReference.Ref (u,spec)) ->
+ NCic.Const (NReference.reference_of_spec (refresh_uri u) spec)
+ | t -> NCicUtils.map (fun _ _ -> ()) () (fun _ -> refresh_uri_in_term) t
+;;
+
+let refresh_uri_in_obj (uri,height,metasenv,subst,obj_kind) =
+ assert (metasenv = []);
+ assert (subst = []);
+ uri,height,metasenv,subst,
+ NCicUntrusted.map_obj_kind refresh_uri_in_term obj_kind
+;;
+
+module type Serializer =
+ sig
+ type status
+ type obj
+ val register:
+ string ->
+ ('a -> refresh_uri_in_term:(NCic.term -> NCic.term) -> status -> status) ->
+ ('a -> obj)
+ val serialize: baseuri:NUri.uri -> obj list -> unit
+ val require: baseuri:NUri.uri -> status -> status
+ end
+
+module Serializer(S: sig type status end) =
+ struct
+ type status = S.status
+ type obj = string * Obj.t
+
+ let require1 = ref (fun _ -> assert false (* unknown data*))
+ let already_registered = ref []
+
+ let register tag require =
+ assert (not (List.mem tag !already_registered));
+ already_registered := tag :: !already_registered;
+ require1 :=
+ (fun (tag',data) as x ->
+ if tag=tag' then
+ require (Obj.magic data) ~refresh_uri_in_term
+ else
+ !require1 x);
+ (fun x -> tag,Obj.repr x)
+
+ let serialize = serialize
+
+ let require ~baseuri status =
+ let dump = require0 ~baseuri in
+ List.fold_right !require1 dump status
+end
+
+let decompile ~baseuri =
+ HExtlib.safe_remove (path_of_baseuri baseuri);
+ let basepath = path_of_baseuri ~no_suffix:true baseuri in
+ try
+ let od = Unix.opendir basepath in
+ let rec aux names =
+ try
+ let name = Unix.readdir od in
+ if name <> "." && name <> ".." then aux (name::names) else aux names
+ with
+ End_of_file -> names in
+ let names = List.map (fun name -> basepath ^ "/" ^ name) (aux []) in
+ Unix.closedir od;
+ List.iter Unix.unlink names;
+ HExtlib.rmdir_descend basepath;
+ set_global_aliases
+ (List.filter
+ (fun (_,_,NReference.Ref (nuri,_)) ->
+ Filename.dirname (NUri.string_of_uri nuri) <> NUri.string_of_uri baseuri
+ ) (get_global_aliases ()))
+ with
+ Unix.Unix_error _ -> () (* raised by Unix.opendir, we hope :-) *)
+;;
+
+LibraryClean.set_decompile_cb
+ (fun ~baseuri -> decompile ~baseuri:(NUri.uri_of_string baseuri));;
-let aliases = ref [];;
+let fetch_obj uri =
+ let obj = require0 ~baseuri:uri in
+ refresh_uri_in_obj obj
+;;
let resolve name =
try
HExtlib.filter_map
- (fun (name',nref) -> if name'=name then Some nref else None) !aliases
+ (fun (_,name',nref) -> if name'=name then Some nref else None)
+ (!local_aliases @ get_global_aliases ())
with
- Not_found -> raise (ObjectNotFound (lazy name))
+ Not_found -> raise (NCicEnvironment.ObjectNotFound (lazy name))
;;
-let add_obj u obj =
+let aliases_of uri =
+ try
+ HExtlib.filter_map
+ (fun (uri',_,nref) ->
+ if NUri.eq uri' uri then Some nref else None) !local_aliases
+ with
+ Not_found -> raise (NCicEnvironment.ObjectNotFound (lazy (NUri.string_of_uri uri)))
+;;
+
+let add_obj status u obj =
storage := (u,obj)::!storage;
let _,height,_,_,obj = obj in
let references =
match obj with
NCic.Constant (_,name,None,_,_) ->
- [name,NReference.reference_of_spec u NReference.Decl]
+ [u,name,NReference.reference_of_spec u NReference.Decl]
| NCic.Constant (_,name,Some _,_,_) ->
- [name,NReference.reference_of_spec u (NReference.Def height)]
+ [u,name,NReference.reference_of_spec u (NReference.Def height)]
| NCic.Fixpoint (is_ind,fl,_) ->
HExtlib.list_mapi
(fun (_,name,recno,_,_) i ->
if is_ind then
- name,NReference.reference_of_spec u (NReference.Fix(i,recno,height))
+ u,name,NReference.reference_of_spec u(NReference.Fix(i,recno,height))
else
- name,NReference.reference_of_spec u (NReference.CoFix i)) fl
+ u,name,NReference.reference_of_spec u (NReference.CoFix i)) fl
| NCic.Inductive (inductive,leftno,il,_) ->
List.flatten
(HExtlib.list_mapi
(fun (_,iname,_,cl) i ->
HExtlib.list_mapi
(fun (_,cname,_) j->
- cname,NReference.reference_of_spec u (NReference.Con (i,j,leftno))
+ u,cname,
+ NReference.reference_of_spec u (NReference.Con (i,j+1,leftno))
) cl @
- [iname,
+ [u,iname,
NReference.reference_of_spec u
(NReference.Ind (inductive,i,leftno))]
) il)
in
- aliases := references @ !aliases
+ local_aliases := references @ !local_aliases;
+ status#set_timestamp (!storage,!local_aliases,!cache)
;;
-let cache = NUri.UriHash.create 313;;
-
let get_obj u =
try List.assq u !storage
with Not_found ->
- try NUri.UriHash.find cache u
- with Not_found ->
- (* in the final implementation should get it from disk *)
+ try fetch_obj u
+ with Sys_error _ ->
+ try NUri.UriMap.find u !cache
+ with Not_found ->
let ouri = NCic2OCic.ouri_of_nuri u in
try
let o,_ = CicEnvironment.get_obj CicUniv.oblivion_ugraph ouri in
let l = OCic2NCic.convert_obj ouri o in
- List.iter (fun (u,_,_,_,_ as o) ->
- (* prerr_endline ("+"^NUri.string_of_uri u); *)
- NUri.UriHash.add cache u o) l;
+ List.iter (fun (u,_,_,_,_ as o) -> cache:= NUri.UriMap.add u o !cache) l;
HExtlib.list_last l
with CicEnvironment.Object_not_found u ->
- raise (ObjectNotFound
+ raise (NCicEnvironment.ObjectNotFound
(lazy (NUri.string_of_uri (OCic2NCic.nuri_of_ouri u))))
;;
-let clear_cache () = NUri.UriHash.clear cache;;
+let clear_cache () = cache := NUri.UriMap.empty;;
+
+NCicEnvironment.set_get_obj get_obj;;
+NCicPp.set_get_obj get_obj;;
projects / helm.git / blobdiff