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
17 (NUri.uri * NCic.obj) list *
18 (NUri.uri * string * NReference.reference) list *
19 NCic.obj NUri.UriMap.t;;
21 let time0 = [],[],NUri.UriMap.empty;;
22 let storage = ref [];;
23 let aliases = ref [];;
24 let cache = ref NUri.UriMap.empty;;
28 val timestamp = (time0 : timestamp)
29 method timestamp = timestamp
30 method set_timestamp v = {< timestamp = v >}
31 method set_library_status
32 : 'status. < timestamp : timestamp; .. > as 'status -> 'self
33 = fun o -> {< timestamp = o#timestamp >}
36 let time_travel status =
37 let sto,ali,cac = status#timestamp in
38 storage := sto; aliases := ali; cache := cac
41 let path_of_baseuri ?(no_suffix=false) baseuri =
42 let uri = NUri.string_of_uri baseuri in
43 let path = String.sub uri 4 (String.length uri - 4) in
44 let path = Helm_registry.get "matita.basedir" ^ path in
45 let dirname = Filename.dirname path in
46 HExtlib.mkdir dirname;
55 let require0 ~baseuri =
56 let ch = open_in (path_of_baseuri baseuri) in
57 let mmagic,dump = Marshal.from_channel ch in
59 if mmagic <> magic then
60 raise (LibraryOutOfSync (lazy "The library is out of sync with the implementation. Please recompile the library."))
65 let serialize ~baseuri dump =
66 let ch = open_out (path_of_baseuri baseuri) in
67 Marshal.to_channel ch (magic,dump) [Marshal.Closures];
71 let ch = open_out (path_of_baseuri uri) in
72 Marshal.to_channel ch (magic,obj) [];
75 time_travel (new status)
78 let refresh_uri uri = NUri.uri_of_string (NUri.string_of_uri uri);;
80 let rec refresh_uri_in_term =
82 NCic.Const (NReference.Ref (u,spec)) ->
83 NCic.Const (NReference.reference_of_spec (refresh_uri u) spec)
84 | t -> NCicUtils.map (fun _ _ -> ()) () (fun _ -> refresh_uri_in_term) t
87 let refresh_uri_in_obj (uri,height,metasenv,subst,obj_kind) =
88 assert (metasenv = []);
90 uri,height,metasenv,subst,
91 NCicUntrusted.map_obj_kind refresh_uri_in_term obj_kind
94 module type Serializer =
100 ('a -> refresh_uri_in_term:(NCic.term -> NCic.term) -> status -> status) ->
102 val serialize: baseuri:NUri.uri -> obj list -> unit
103 val require: baseuri:NUri.uri -> status -> status
106 module Serializer(S: sig type status end) =
108 type status = S.status
109 type obj = string * Obj.t
111 let require1 = ref (fun _ -> assert false (* unknown data*))
112 let already_registered = ref []
114 let register tag require =
115 assert (not (List.mem tag !already_registered));
116 already_registered := tag :: !already_registered;
118 (fun (tag',data) as x ->
120 require (Obj.magic data) ~refresh_uri_in_term
123 (fun x -> tag,Obj.repr x)
125 let serialize = serialize
127 let require ~baseuri status =
128 let dump = require0 ~baseuri in
129 List.fold_right !require1 dump status
132 let decompile ~baseuri =
133 HExtlib.safe_remove (path_of_baseuri baseuri);
134 let basepath = path_of_baseuri ~no_suffix:true baseuri in
136 let od = Unix.opendir basepath in
139 let name = Unix.readdir od in
140 if name <> "." && name <> ".." then aux (name::names) else aux names
142 End_of_file -> names in
143 let names = List.map (fun name -> basepath ^ "/" ^ name) (aux []) in
145 List.iter Unix.unlink names;
146 HExtlib.rmdir_descend basepath
148 Unix.Unix_error _ -> () (* raised by Unix.opendir, we hope :-) *)
151 LibraryClean.set_decompile_cb
152 (fun ~baseuri -> decompile ~baseuri:(NUri.uri_of_string baseuri));;
155 let obj = require0 ~baseuri:uri in
156 refresh_uri_in_obj obj
162 (fun (_,name',nref) -> if name'=name then Some nref else None) !aliases
164 Not_found -> raise (NCicEnvironment.ObjectNotFound (lazy name))
170 (fun (uri',_,nref) -> if NUri.eq uri' uri then Some nref else None) !aliases
172 Not_found -> raise (NCicEnvironment.ObjectNotFound (lazy (NUri.string_of_uri uri)))
175 let add_obj status u obj =
176 storage := (u,obj)::!storage;
177 let _,height,_,_,obj = obj in
180 NCic.Constant (_,name,None,_,_) ->
181 [u,name,NReference.reference_of_spec u NReference.Decl]
182 | NCic.Constant (_,name,Some _,_,_) ->
183 [u,name,NReference.reference_of_spec u (NReference.Def height)]
184 | NCic.Fixpoint (is_ind,fl,_) ->
186 (fun (_,name,recno,_,_) i ->
188 u,name,NReference.reference_of_spec u(NReference.Fix(i,recno,height))
190 u,name,NReference.reference_of_spec u (NReference.CoFix i)) fl
191 | NCic.Inductive (inductive,leftno,il,_) ->
194 (fun (_,iname,_,cl) i ->
198 NReference.reference_of_spec u (NReference.Con (i,j+1,leftno))
201 NReference.reference_of_spec u
202 (NReference.Ind (inductive,i,leftno))]
205 aliases := references @ !aliases;
206 status#set_timestamp (!storage,!aliases,!cache)
210 try List.assq u !storage
214 try NUri.UriMap.find u !cache
216 let ouri = NCic2OCic.ouri_of_nuri u in
218 let o,_ = CicEnvironment.get_obj CicUniv.oblivion_ugraph ouri in
219 let l = OCic2NCic.convert_obj ouri o in
220 List.iter (fun (u,_,_,_,_ as o) -> cache:= NUri.UriMap.add u o !cache) l;
222 with CicEnvironment.Object_not_found u ->
223 raise (NCicEnvironment.ObjectNotFound
224 (lazy (NUri.string_of_uri (OCic2NCic.nuri_of_ouri u))))
227 let clear_cache () = cache := NUri.UriMap.empty;;
229 NCicEnvironment.set_get_obj get_obj;;
230 NCicPp.set_get_obj get_obj;;