branch for universe

[helm.git] / components / lexicon / lexiconSync.ml

diff --git a/components/lexicon/lexiconSync.ml b/components/lexicon/lexiconSync.ml
new file mode 100644 (file)
index 0000000..3003194
--- /dev/null
+++ b/components/lexicon/lexiconSync.ml
@@ -0,0 +1,111 @@
+(* Copyright (C) 2004-2005, HELM Team.
+ * 
+ * This file is part of HELM, an Hypertextual, Electronic
+ * Library of Mathematics, developed at the Computer Science
+ * Department, University of Bologna, Italy.
+ * 
+ * HELM is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ * 
+ * HELM is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with HELM; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston,
+ * MA  02111-1307, USA.
+ * 
+ * For details, see the HELM World-Wide-Web page,
+ * http://helm.cs.unibo.it/
+ *)
+
+(* $Id$ *)
+
+let alias_diff ~from status = 
+  let module Map = DisambiguateTypes.Environment in
+  Map.fold
+    (fun domain_item (description1,_ as codomain_item) acc ->
+      try
+       let description2,_ = Map.find domain_item from.LexiconEngine.aliases in
+        if description1 <> description2 then
+         (domain_item,codomain_item)::acc
+        else
+          acc
+      with
+       Not_found ->
+         (domain_item,codomain_item)::acc)
+    status.LexiconEngine.aliases []
+
+let alias_diff =
+ let profiler = HExtlib.profile "alias_diff(conteg. anche in include)" in
+ fun ~from status -> profiler.HExtlib.profile (alias_diff ~from) status
+
+(** given a uri and a type list (the contructors types) builds a list of pairs
+ *  (name,uri) that is used to generate automatic aliases **)
+let extract_alias types uri = 
+  fst(List.fold_left (
+    fun (acc,i) (name, _, _, cl) -> 
+      (name, UriManager.uri_of_uriref uri i None) ::
+      (fst(List.fold_left (
+        fun (acc,j) (name,_) ->
+          (((name,UriManager.uri_of_uriref uri i
+          (Some j)) :: acc) , j+1)
+        ) (acc,1) cl)),i+1
+  ) ([],0) types)
+
+let build_aliases =
+ List.map
+  (fun (name,uri) ->
+    DisambiguateTypes.Id name,
+     (UriManager.string_of_uri uri, fun _ _ _ -> CicUtil.term_of_uri uri))
+
+let add_aliases_for_inductive_def status types uri = 
+  let aliases = build_aliases (extract_alias types uri) in
+   LexiconEngine.set_proof_aliases status aliases
+
+let add_alias_for_constant status uri =
+ let name = UriManager.name_of_uri uri in
+ let new_env = build_aliases [(name,uri)] in
+ LexiconEngine.set_proof_aliases status new_env
+
+let add_aliases_for_object status uri =
+ function
+    Cic.InductiveDefinition (types,_,_,_) ->
+     add_aliases_for_inductive_def status types uri
+  | Cic.Constant _ -> add_alias_for_constant status uri
+  | Cic.Variable _
+  | Cic.CurrentProof _ -> assert false
+  
+let add_aliases_for_objs =
+ List.fold_left
+  (fun status uri ->
+    let obj,_ = CicEnvironment.get_obj CicUniv.empty_ugraph uri in
+     add_aliases_for_object status uri obj)
+ 
+module OrderedId = 
+struct
+  type t = CicNotation.notation_id
+  let compare = Pervasives.compare
+end
+
+module IdSet  = Set.Make (OrderedId)
+
+  (** @return l2 \ l1 *)
+let id_list_diff l2 l1 =
+  let module S = IdSet in
+  let s1 = List.fold_left (fun set uri -> S.add uri set) S.empty l1 in
+  let s2 = List.fold_left (fun set uri -> S.add uri set) S.empty l2 in
+  let diff = S.diff s2 s1 in
+  S.fold (fun uri uris -> uri :: uris) diff []
+
+let time_travel ~present ~past =
+  let notation_to_remove =
+    id_list_diff present.LexiconEngine.notation_ids
+     past.LexiconEngine.notation_ids
+  in
+   List.iter CicNotation.remove_notation notation_to_remove
+