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 let is_a_variant obj =
32 | Cic.Constant(_,_,_,_,attrs) ->
33 List.exists (fun x -> x = `Flavour `Variant) attrs
36 let uris_for_inductive_type uri obj =
38 | Cic.InductiveDefinition(types,_,_,_) ->
39 let suri = UriManager.string_of_uri uri in
42 (fun (acc,i) (_,_,_,constructors)->
43 let is = string_of_int i in
47 let js = string_of_int j in
48 UriManager.uri_of_string
49 (suri^"#xpointer(1/"^is^"/"^js^")")::acc,j+1)
58 let is_equational_fact ty =
60 match CicReduction.whd ctx t with
61 | Cic.Prod (name,src,tgt) ->
63 CicTypeChecker.type_of_aux' [] ctx src CicUniv.oblivion_ugraph
65 if fst (CicReduction.are_convertible ctx s (Cic.Sort Cic.Prop) u) then
68 aux (Some (name,Cic.Decl src)::ctx) tgt
69 | Cic.Appl [ Cic.MutInd (u,_,_) ; _; _; _] -> LibraryObjects.is_eq_URI u
75 let add_obj ~pack_coercion_obj uri obj status =
76 let lemmas = LibrarySync.add_obj ~pack_coercion_obj uri obj in
77 let add_to_universe (automation_cache,status) uri =
78 let term = CicUtil.term_of_uri uri in
79 let ty,_ = CicTypeChecker.type_of_aux' [] [] term CicUniv.oblivion_ugraph in
80 let tkeys = Universe.keys [] ty in
83 (fun key -> GrafiteAst.Index(HExtlib.dummy_floc,(Some key),uri))
86 let is_equational = is_equational_fact ty in
89 [ GrafiteAst.Select(HExtlib.dummy_floc,uri) ]
93 let universe = automation_cache.AutomationCache.univ in
94 let universe = Universe.index_term_and_unfolded_term universe [] term ty in
95 let automation_cache =
97 AutomationCache.add_term_to_active automation_cache [] [] [] term None
101 let automation_cache =
102 { automation_cache with AutomationCache.univ = universe } in
103 let status = GrafiteTypes.add_moo_content index_cmd status in
104 let status = GrafiteTypes.add_moo_content select_cmd status in
105 (automation_cache,status)
108 if is_a_variant obj then []
109 else (uris_for_inductive_type uri obj) @ lemmas
111 let automation_cache,status =
112 List.fold_left add_to_universe
113 (status.GrafiteTypes.automation_cache,status)
117 GrafiteTypes.objects = uri :: lemmas @ status.GrafiteTypes.objects;
118 GrafiteTypes.automation_cache = automation_cache},
121 let add_coercion ~pack_coercion_obj ~add_composites status uri arity
125 LibrarySync.add_coercion ~add_composites ~pack_coercion_obj
126 uri arity saturations baseuri in
127 { status with GrafiteTypes.coercions = CoercDb.dump () ;
128 objects = lemmas @ status.GrafiteTypes.objects
132 let prefer_coercion s u =
134 { s with GrafiteTypes.coercions = CoercDb.dump () }
136 (** @return l2 \ l1 *)
137 let uri_list_diff l2 l1 =
138 let module S = UriManager.UriSet in
139 let s1 = List.fold_left (fun set uri -> S.add uri set) S.empty l1 in
140 let s2 = List.fold_left (fun set uri -> S.add uri set) S.empty l2 in
141 let diff = S.diff s2 s1 in
142 S.fold (fun uri uris -> uri :: uris) diff []
144 let time_travel ~present ~past =
146 uri_list_diff present.GrafiteTypes.objects past.GrafiteTypes.objects in
147 List.iter LibrarySync.remove_obj objs_to_remove;
148 CoercDb.restore past.GrafiteTypes.coercions;
151 let initial_status lexicon_status baseuri = {
152 GrafiteTypes.moo_content_rev = [];
153 proof_status = GrafiteTypes.No_proof;
155 coercions = CoercDb.empty_coerc_db;
156 automation_cache = AutomationCache.empty ();
158 ng_status = GrafiteTypes.CommandMode lexicon_status;
163 CoercDb.restore CoercDb.empty_coerc_db;
164 LibraryObjects.reset_defaults ();
165 initial_status baseuri
169 LibraryObjects.pop ()
174 LibraryObjects.push ()