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 refresh_uri_in_universe =
21 List.map (fun (x,u) -> x, refresh_uri u)
24 let rec refresh_uri_in_term =
26 | NCic.Const (NReference.Ref (u,spec)) ->
27 NCic.Const (NReference.reference_of_spec (refresh_uri u) spec)
28 | NCic.Sort (NCic.Type l) -> NCic.Sort (NCic.Type (refresh_uri_in_universe l))
29 | t -> NCicUtils.map (fun _ _ -> ()) () (fun _ -> refresh_uri_in_term) t
32 let refresh_uri_in_obj (uri,height,metasenv,subst,obj_kind) =
33 assert (metasenv = []);
35 uri,height,metasenv,subst,
36 NCicUntrusted.map_obj_kind refresh_uri_in_term obj_kind
39 let path_of_baseuri ?(no_suffix=false) baseuri =
40 let uri = NUri.string_of_uri baseuri in
41 let path = String.sub uri 4 (String.length uri - 4) in
42 let path = Helm_registry.get "matita.basedir" ^ path in
43 let dirname = Filename.dirname path in
44 HExtlib.mkdir dirname;
51 let require_path path =
52 let ch = open_in path in
53 let mmagic,dump = Marshal.from_channel ch in
55 if mmagic <> magic then
56 raise (LibraryOutOfSync (lazy "The library is out of sync with the implementation. Please recompile the library."))
61 let require0 ~baseuri = require_path (path_of_baseuri baseuri);;
63 let db_path () = Helm_registry.get "matita.basedir" ^ "/ng_db.ng";;
67 [ `Obj of NUri.uri * NCic.obj
68 | `Constr of bool * NCic.universe * NCic.universe] list *
69 (NUri.uri * string * NReference.reference) list *
70 NCic.obj NUri.UriMap.t *
74 let time0 = [],[],NUri.UriMap.empty,[];;
75 let storage = ref [];;
76 let local_aliases = ref [];;
77 let cache = ref NUri.UriMap.empty;;
78 let includes = ref [];;
80 let load_db,set_global_aliases,get_global_aliases,add_deps,get_deps,remove_deps=
81 let global_aliases = ref [] in
82 let rev_includes_map = ref NUri.UriMap.empty in
84 let ch = open_out (db_path ()) in
85 Marshal.to_channel ch (magic,(!global_aliases,!rev_includes_map)) [];
88 HExtlib.mkdir (Helm_registry.get "matita.basedir");
90 let ga,im = require_path (db_path ()) in
93 (fun (uri,name,NReference.Ref (uri2,spec)) ->
94 refresh_uri uri,name,NReference.reference_of_spec (refresh_uri uri2) spec
98 (fun u l im -> NUri.UriMap.add (refresh_uri u) (List.map refresh_uri l) im
99 ) im NUri.UriMap.empty
101 global_aliases := ga;
102 rev_includes_map := im
106 let get_deps_one_step u =
107 try NUri.UriMap.find u !rev_includes_map with Not_found -> [] in
112 if List.mem he res then
115 aux (he::res) (get_deps_one_step he @ tl)
119 rev_includes_map := NUri.UriMap.remove u !rev_includes_map;
122 (fun l -> List.filter (fun uri -> not (NUri.eq u uri)) l) !rev_includes_map;
126 (fun ga -> global_aliases := ga; store_db ()),
127 (fun () -> !global_aliases),
129 rev_includes_map := NUri.UriMap.add u (l @ get_deps u) !rev_includes_map;
140 val timestamp = (time0 : timestamp)
141 method timestamp = timestamp
142 method set_timestamp v = {< timestamp = v >}
143 method set_library_status
144 : 'status. < timestamp : timestamp; .. > as 'status -> 'self
145 = fun o -> {< timestamp = o#timestamp >}
148 let time_travel status =
149 let sto,ali,cac,inc = status#timestamp in
150 let diff_len = List.length !storage - List.length sto in
151 let to_be_deleted,_ = HExtlib.split_nth diff_len !storage in
152 if List.length to_be_deleted > 0 then
153 NCicEnvironment.invalidate_item (HExtlib.list_last to_be_deleted);
154 storage := sto; local_aliases := ali; cache := cac; includes := inc
157 let serialize ~baseuri dump =
158 let ch = open_out (path_of_baseuri baseuri) in
159 Marshal.to_channel ch (magic,dump) [];
164 let ch = open_out (path_of_baseuri uri) in
165 Marshal.to_channel ch (magic,obj) [];
169 set_global_aliases (!local_aliases @ get_global_aliases ());
170 List.iter (fun u -> add_deps u [baseuri]) !includes;
171 time_travel (new status)
174 module type Serializer =
180 ('a -> refresh_uri_in_universe:(NCic.universe -> NCic.universe) -> refresh_uri_in_term:(NCic.term -> NCic.term) -> status -> status) ->
182 val serialize: baseuri:NUri.uri -> obj list -> unit
183 val require: baseuri:NUri.uri -> status -> status
186 module Serializer(S: sig type status end) =
188 type status = S.status
189 type obj = string * Obj.t
191 let require1 = ref (fun _ -> assert false (* unknown data*))
192 let already_registered = ref []
194 let register tag require =
195 assert (not (List.mem tag !already_registered));
196 already_registered := tag :: !already_registered;
198 (fun (tag',data) as x ->
200 require (Obj.magic data) ~refresh_uri_in_universe ~refresh_uri_in_term
203 (fun x -> tag,Obj.repr x)
205 let serialize = serialize
207 let require ~baseuri status =
208 includes := baseuri::!includes;
209 let dump = require0 ~baseuri in
210 List.fold_right !require1 dump status
213 let decompile ~baseuri =
214 let baseuris = get_deps baseuri in
215 List.iter (fun baseuri ->
217 HExtlib.safe_remove (path_of_baseuri baseuri);
218 let basepath = path_of_baseuri ~no_suffix:true baseuri in
220 let od = Unix.opendir basepath in
223 let name = Unix.readdir od in
224 if name <> "." && name <> ".." then aux (name::names) else aux names
226 End_of_file -> names in
227 let names = List.map (fun name -> basepath ^ "/" ^ name) (aux []) in
229 List.iter Unix.unlink names;
230 HExtlib.rmdir_descend basepath;
233 (fun (_,_,NReference.Ref (nuri,_)) ->
234 Filename.dirname (NUri.string_of_uri nuri) <> NUri.string_of_uri baseuri
235 ) (get_global_aliases ()))
237 Unix.Unix_error _ -> () (* raised by Unix.opendir, we hope :-) *)
241 LibraryClean.set_decompile_cb
242 (fun ~baseuri -> decompile ~baseuri:(NUri.uri_of_string baseuri));;
245 let obj = require0 ~baseuri:uri in
246 refresh_uri_in_obj obj
252 (fun (_,name',nref) -> if name'=name then Some nref else None)
253 (!local_aliases @ get_global_aliases ())
255 Not_found -> raise (NCicEnvironment.ObjectNotFound (lazy name))
261 (fun (uri',_,nref) ->
262 if NUri.eq uri' uri then Some nref else None) !local_aliases
264 Not_found -> raise (NCicEnvironment.ObjectNotFound (lazy (NUri.string_of_uri uri)))
267 let add_obj status ((u,_,_,_,_) as obj) =
268 NCicEnvironment.check_and_add_obj obj;
269 storage := (`Obj (u,obj))::!storage;
270 let _,height,_,_,obj = obj in
273 NCic.Constant (_,name,None,_,_) ->
274 [u,name,NReference.reference_of_spec u NReference.Decl]
275 | NCic.Constant (_,name,Some _,_,_) ->
276 [u,name,NReference.reference_of_spec u (NReference.Def height)]
277 | NCic.Fixpoint (is_ind,fl,_) ->
279 (fun (_,name,recno,_,_) i ->
281 u,name,NReference.reference_of_spec u(NReference.Fix(i,recno,height))
283 u,name,NReference.reference_of_spec u (NReference.CoFix i)) fl
284 | NCic.Inductive (inductive,leftno,il,_) ->
287 (fun (_,iname,_,cl) i ->
291 NReference.reference_of_spec u (NReference.Con (i,j+1,leftno))
294 NReference.reference_of_spec u
295 (NReference.Ind (inductive,i,leftno))]
298 local_aliases := references @ !local_aliases;
299 status#set_timestamp (!storage,!local_aliases,!cache,!includes)
302 let add_constraint status strict u1 u2 =
303 NCicEnvironment.add_constraint strict u1 u2;
304 storage := (`Constr (strict,u1,u2)) :: !storage;
305 status#set_timestamp (!storage,!local_aliases,!cache,!includes)
312 (function `Obj (u,o) -> Some (u,o) | _ -> None )
317 try NUri.UriMap.find u !cache
319 let ouri = NCic2OCic.ouri_of_nuri u in
321 let o,_ = CicEnvironment.get_obj CicUniv.oblivion_ugraph ouri in
322 let l = OCic2NCic.convert_obj ouri o in
323 List.iter (fun (u,_,_,_,_ as o) -> cache:= NUri.UriMap.add u o !cache) l;
325 with CicEnvironment.Object_not_found u ->
326 raise (NCicEnvironment.ObjectNotFound
327 (lazy (NUri.string_of_uri (OCic2NCic.nuri_of_ouri u))))
330 let clear_cache () = cache := NUri.UriMap.empty;;
332 NCicEnvironment.set_get_obj get_obj;;
333 NCicPp.set_get_obj get_obj;;