2 ||M|| This file is part of HELM, an Hypertextual, Electronic
3 ||A|| Library of Mathematics, developed at the Computer Science
4 ||T|| Department, University of Bologna, Italy.
6 ||T|| HELM is free software; you can redistribute it and/or
7 ||A|| modify it under the terms of the GNU General Public License
8 \ / version 2 or (at your option) any later version.
9 \ / This software is distributed as is, NO WARRANTY.
10 V_______________________________________________________________ *)
14 exception LibraryOutOfSync of string Lazy.t
18 let refresh_uri uri = NUri.uri_of_string (NUri.string_of_uri uri);;
20 let rec refresh_uri_in_term =
22 NCic.Const (NReference.Ref (u,spec)) ->
23 NCic.Const (NReference.reference_of_spec (refresh_uri u) spec)
24 | t -> NCicUtils.map (fun _ _ -> ()) () (fun _ -> refresh_uri_in_term) t
27 let refresh_uri_in_obj (uri,height,metasenv,subst,obj_kind) =
28 assert (metasenv = []);
30 uri,height,metasenv,subst,
31 NCicUntrusted.map_obj_kind refresh_uri_in_term obj_kind
34 let path_of_baseuri ?(no_suffix=false) baseuri =
35 let uri = NUri.string_of_uri baseuri in
36 let path = String.sub uri 4 (String.length uri - 4) in
37 let path = Helm_registry.get "matita.basedir" ^ path in
38 let dirname = Filename.dirname path in
39 HExtlib.mkdir dirname;
46 let require_path path =
47 let ch = open_in path in
48 let mmagic,dump = Marshal.from_channel ch in
50 if mmagic <> magic then
51 raise (LibraryOutOfSync (lazy "The library is out of sync with the implementation. Please recompile the library."))
56 let require0 ~baseuri = require_path (path_of_baseuri baseuri);;
58 let db_path () = Helm_registry.get "matita.basedir" ^ "/ng_db.ng";;
61 (NUri.uri * NCic.obj) list *
62 (NUri.uri * string * NReference.reference) list *
63 NCic.obj NUri.UriMap.t;;
65 let time0 = [],[],NUri.UriMap.empty;;
66 let storage = ref [];;
67 let local_aliases = ref [];;
69 let set_global_aliases,get_global_aliases =
70 let global_aliases = ref [] in
72 let ch = open_out (db_path ()) in
73 Marshal.to_channel ch (magic,!global_aliases) [];
76 (fun ga -> global_aliases := ga; store_db ()),
77 (fun () -> !global_aliases)
82 let global_aliases = require_path (db_path ()) in
85 (fun (uri,name,NReference.Ref (uri2,spec)) ->
86 refresh_uri uri,name,NReference.reference_of_spec (refresh_uri uri2) spec
89 set_global_aliases global_aliases
94 let cache = ref NUri.UriMap.empty;;
98 val timestamp = (time0 : timestamp)
99 method timestamp = timestamp
100 method set_timestamp v = {< timestamp = v >}
101 method set_library_status
102 : 'status. < timestamp : timestamp; .. > as 'status -> 'self
103 = fun o -> {< timestamp = o#timestamp >}
106 let time_travel status =
107 let sto,ali,cac = status#timestamp in
108 storage := sto; local_aliases := ali; cache := cac
111 let serialize ~baseuri dump =
112 let ch = open_out (path_of_baseuri baseuri) in
113 Marshal.to_channel ch (magic,dump) [];
117 let ch = open_out (path_of_baseuri uri) in
118 Marshal.to_channel ch (magic,obj) [];
121 set_global_aliases (!local_aliases @ get_global_aliases ());
122 time_travel (new status)
125 module type Serializer =
131 ('a -> refresh_uri_in_term:(NCic.term -> NCic.term) -> status -> status) ->
133 val serialize: baseuri:NUri.uri -> obj list -> unit
134 val require: baseuri:NUri.uri -> status -> status
137 module Serializer(S: sig type status end) =
139 type status = S.status
140 type obj = string * Obj.t
142 let require1 = ref (fun _ -> assert false (* unknown data*))
143 let already_registered = ref []
145 let register tag require =
146 assert (not (List.mem tag !already_registered));
147 already_registered := tag :: !already_registered;
149 (fun (tag',data) as x ->
151 require (Obj.magic data) ~refresh_uri_in_term
154 (fun x -> tag,Obj.repr x)
156 let serialize = serialize
158 let require ~baseuri status =
159 let dump = require0 ~baseuri in
160 List.fold_right !require1 dump status
163 let decompile ~baseuri =
164 HExtlib.safe_remove (path_of_baseuri baseuri);
165 let basepath = path_of_baseuri ~no_suffix:true baseuri in
167 let od = Unix.opendir basepath in
170 let name = Unix.readdir od in
171 if name <> "." && name <> ".." then aux (name::names) else aux names
173 End_of_file -> names in
174 let names = List.map (fun name -> basepath ^ "/" ^ name) (aux []) in
176 List.iter Unix.unlink names;
177 HExtlib.rmdir_descend basepath;
180 (fun (_,_,NReference.Ref (nuri,_)) ->
181 Filename.dirname (NUri.string_of_uri nuri) <> NUri.string_of_uri baseuri
182 ) (get_global_aliases ()))
184 Unix.Unix_error _ -> () (* raised by Unix.opendir, we hope :-) *)
187 LibraryClean.set_decompile_cb
188 (fun ~baseuri -> decompile ~baseuri:(NUri.uri_of_string baseuri));;
191 let obj = require0 ~baseuri:uri in
192 refresh_uri_in_obj obj
198 (fun (_,name',nref) -> if name'=name then Some nref else None)
199 (!local_aliases @ get_global_aliases ())
201 Not_found -> raise (NCicEnvironment.ObjectNotFound (lazy name))
207 (fun (uri',_,nref) ->
208 if NUri.eq uri' uri then Some nref else None) !local_aliases
210 Not_found -> raise (NCicEnvironment.ObjectNotFound (lazy (NUri.string_of_uri uri)))
213 let add_obj status u obj =
214 storage := (u,obj)::!storage;
215 let _,height,_,_,obj = obj in
218 NCic.Constant (_,name,None,_,_) ->
219 [u,name,NReference.reference_of_spec u NReference.Decl]
220 | NCic.Constant (_,name,Some _,_,_) ->
221 [u,name,NReference.reference_of_spec u (NReference.Def height)]
222 | NCic.Fixpoint (is_ind,fl,_) ->
224 (fun (_,name,recno,_,_) i ->
226 u,name,NReference.reference_of_spec u(NReference.Fix(i,recno,height))
228 u,name,NReference.reference_of_spec u (NReference.CoFix i)) fl
229 | NCic.Inductive (inductive,leftno,il,_) ->
232 (fun (_,iname,_,cl) i ->
236 NReference.reference_of_spec u (NReference.Con (i,j+1,leftno))
239 NReference.reference_of_spec u
240 (NReference.Ind (inductive,i,leftno))]
243 local_aliases := references @ !local_aliases;
244 status#set_timestamp (!storage,!local_aliases,!cache)
248 try List.assq u !storage
252 try NUri.UriMap.find u !cache
254 let ouri = NCic2OCic.ouri_of_nuri u in
256 let o,_ = CicEnvironment.get_obj CicUniv.oblivion_ugraph ouri in
257 let l = OCic2NCic.convert_obj ouri o in
258 List.iter (fun (u,_,_,_,_ as o) -> cache:= NUri.UriMap.add u o !cache) l;
260 with CicEnvironment.Object_not_found u ->
261 raise (NCicEnvironment.ObjectNotFound
262 (lazy (NUri.string_of_uri (OCic2NCic.nuri_of_ouri u))))
265 let clear_cache () = cache := NUri.UriMap.empty;;
267 NCicEnvironment.set_get_obj get_obj;;
268 NCicPp.set_get_obj get_obj;;