1 (* Copyright (C) 2004-2005, HELM Team.
3 * This file is part of HELM, an Hypertextual, Electronic
4 * Library of Mathematics, developed at the Computer Science
5 * Department, University of Bologna, Italy.
7 * HELM is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License
9 * as published by the Free Software Foundation; either version 2
10 * of the License, or (at your option) any later version.
12 * HELM is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with HELM; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place - Suite 330, Boston,
22 * For details, see the HELM World-Wide-Web page,
23 * http://helm.cs.unibo.it/
30 (** given a uri and a type list (the contructors types) builds a list of pairs
31 * (name,uri) that is used to generate authomatic aliases **)
32 let extract_alias types uri =
34 fun (acc,i) (name, _, _, cl) ->
35 (name, UriManager.string_of_uri (UriManager.uri_of_uriref uri i None))
38 fun (acc,j) (name,_) ->
39 (((name,UriManager.string_of_uri (UriManager.uri_of_uriref uri i
40 (Some j))) :: acc) , j+1)
44 let env_of_list l env =
45 let l' = List.map (fun (name,suri) -> name,suri,CicUtil.term_of_uri (UriManager.uri_of_string suri)) l in
46 DisambiguateTypes.env_of_list l' env
48 let add_aliases_for_inductive_def status types suri =
49 let uri = UriManager.uri_of_string suri in
50 let aliases = env_of_list (extract_alias types uri) status.aliases in
51 {status with aliases = aliases }
53 let add_alias_for_constant status suri =
54 let uri = UriManager.uri_of_string suri in
55 let name = UriManager.name_of_uri uri in
56 let new_env = env_of_list [(name,suri)] status.aliases in
57 {status with aliases = new_env }
59 let add_aliases_for_object status suri =
61 Cic.InductiveDefinition (types,_,_,_) ->
62 add_aliases_for_inductive_def status types suri
63 | Cic.Constant _ -> add_alias_for_constant status suri
65 | Cic.CurrentProof _ -> assert false
67 let paths_and_uris_of_obj uri status =
68 let basedir = get_string_option status "basedir" in
69 let innertypesuri = UriManager.innertypesuri_of_uri uri in
70 let bodyuri = UriManager.bodyuri_of_uri uri in
71 let innertypesfilename = Str.replace_first (Str.regexp "^cic:") ""
72 (UriManager.string_of_uri innertypesuri) ^ ".xml.gz" in
73 let innertypespath = basedir ^ "/" ^ innertypesfilename in
74 let xmlfilename = Str.replace_first (Str.regexp "^cic:/") ""
75 (UriManager.string_of_uri uri) ^ ".xml.gz" in
76 let xmlpath = basedir ^ "/" ^ xmlfilename in
77 let xmlbodyfilename = Str.replace_first (Str.regexp "^cic:/") ""
78 (UriManager.string_of_uri uri) ^ ".body.xml.gz" in
79 let xmlbodypath = basedir ^ "/" ^ xmlbodyfilename in
80 xmlpath, xmlbodypath, innertypespath, bodyuri, innertypesuri
82 let save_object_to_disk status uri obj =
83 let ensure_path_exists path =
84 let dir = Filename.dirname path in
87 (* generate annobj, ids_to_inner_sorts and ids_to_inner_types *)
88 let annobj,_,_,ids_to_inner_sorts,ids_to_inner_types,_,_ =
89 Cic2acic.acic_object_of_cic_object ~eta_fix:false obj
93 Cic2Xml.print_object uri ~ids_to_inner_sorts ~ask_dtd_to_the_getter:false
97 Cic2Xml.print_inner_types uri ~ids_to_inner_sorts ~ids_to_inner_types
98 ~ask_dtd_to_the_getter:false
100 let xmlpath, xmlbodypath, innertypespath, bodyuri, innertypesuri =
101 paths_and_uris_of_obj uri status
103 let path_scheme_of path = "file://" ^ path in
104 List.iter MatitaMisc.mkdir
105 (List.map Filename.dirname [innertypespath; xmlpath]);
106 (* now write to disk *)
107 ensure_path_exists innertypespath;
108 Xml.pp ~gzip:true xmlinnertypes (Some innertypespath) ;
109 ensure_path_exists xmlpath;
110 Xml.pp ~gzip:true xml (Some xmlpath) ;
111 (* now register to the getter *)
112 Http_getter.register' innertypesuri (path_scheme_of innertypespath);
113 Http_getter.register' uri (path_scheme_of xmlpath);
114 (* we return a list of uri,path we registered/created *)
115 (uri,xmlpath) :: (innertypesuri,innertypespath) ::
116 (* now the optional body, both write and register *)
117 (match bodyxml,bodyuri with
119 | Some bodyxml,Some bodyuri->
120 ensure_path_exists xmlbodypath;
121 Xml.pp ~gzip:true bodyxml (Some xmlbodypath) ;
122 Http_getter.register' bodyuri (path_scheme_of xmlbodypath);
123 [bodyuri,xmlbodypath]
126 let remove_object_from_disk uri path =
128 Http_getter.unregister' uri
130 let add_obj uri obj status =
131 let dbd = MatitaDb.instance () in
132 let suri = UriManager.string_of_uri uri in
133 if CicEnvironment.in_library uri then
134 command_error (sprintf "%s already defined" suri)
136 CicTypeChecker.typecheck_obj uri obj;
137 MetadataDb.index_obj ~dbd ~uri; (* must be in the env *)
138 let new_stuff = save_object_to_disk status uri obj in
139 MatitaLog.message (sprintf "%s defined" suri);
140 let status = add_aliases_for_object status suri obj in
141 { status with objects = new_stuff @ status.objects;
142 proof_status = No_proof }
147 type t = UriManager.uri * string
148 let compare (u1, _) (u2, _) = UriManager.compare u1 u2
151 module UriSet = Set.Make (OrderedUri)
153 (* returns the uri of objects that were added in the meanwhile...
154 * status1 ----> status2
155 * assumption: objects defined in status2 are a superset of those defined in
158 let delta_status status1 status2 =
159 let module S = UriSet in
161 let s1 = List.fold_left (fun set uri -> S.add uri set) S.empty l1 in
162 let s2 = List.fold_left (fun set uri -> S.add uri set) S.empty l2 in
163 let diff = S.diff s2 s1 in
164 S.fold (fun uri uris -> uri :: uris) diff []
166 diff status1.objects status2.objects
168 let remove_coercion uri =
169 CoercDb.remove_coercion (fun (_,_,u) -> UriManager.eq u uri)
171 let time_travel ~present ~past =
172 let list_of_objs_to_remove = List.rev (delta_status past present) in
173 (* List.rev is just for the debugging code, which otherwise may list both
174 * something.ind and something.ind#xpointer ... (ask Enrico :-) *)
175 let debug_list = ref [] in
176 List.iter (fun (uri,p) ->
177 remove_object_from_disk uri p;
180 CicEnvironment.remove_obj uri
181 with CicEnvironment.Object_not_found _ ->
183 (sprintf "time_travel removes from cache %s that is not in"
184 (UriManager.string_of_uri uri)));
185 let l = MatitaDb.remove_uri uri in
186 debug_list := UriManager.string_of_uri uri :: !debug_list @ l)
187 list_of_objs_to_remove;
189 (* this is debug code
190 * idea: debug_list is the list of objects to be removed as computed from the
191 * db, while list_of_objs_to_remove is the same list but computer from the
192 * differences between statuses *)
193 let l1 = List.sort Pervasives.compare !debug_list in
194 let l2 = List.sort Pervasives.compare
195 (List.map (fun (x,_) -> UriManager.string_of_uri x) list_of_objs_to_remove)
197 let rec uniq = function
200 | h1::h2::tl when h1 = h2 -> uniq (h2 :: tl)
201 | h1::tl (* when h1 <> h2 *) -> h1 :: uniq tl
206 List.iter2 (fun x y -> if x <> y then raise Exit) l1 l2
208 | Invalid_argument _ | Exit ->
209 MatitaLog.debug "It seems you garbaged something...";
210 MatitaLog.debug "l1:";
211 List.iter MatitaLog.debug l1;
212 MatitaLog.debug "l2:";
213 List.iter MatitaLog.debug l2
215 let alias_diff ~from status =
216 let module Map = DisambiguateTypes.Environment in
218 (fun domain_item codomain_item acc ->
219 if not (Map.mem domain_item from.aliases) then
220 Map.add domain_item codomain_item acc
223 status.aliases Map.empty
226 let derived_uris_of_uri uri =
227 UriManager.innertypesuri_of_uri uri ::
228 UriManager.annuri_of_uri uri ::
229 (match UriManager.bodyuri_of_uri uri with
235 (if UriManager.uri_is_ind uri then MatitaDb.xpointers_of_ind uri else []) @
236 derived_uris_of_uri uri
242 let path = Http_getter.resolve' (UriManager.strip_xpointer uri) in
243 assert (String.sub path 0 7 = "file://");
244 String.sub path 7 (String.length path - 7)
246 remove_object_from_disk uri path;
248 Http_getter_types.Key_not_found _ -> Http_getter.unregister' uri);
250 ignore(MatitaDb.remove_uri uri))