--- /dev/null
+(* Copyright (C) 2000, 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://cs.unibo.it/helm/.
+ *)
+
+exception IllFormedXml of int;;
+
+(* Utility functions that transform a Pxp attribute into something useful *)
+
+let string_of_attr a =
+ let module T = Pxp_types in
+ match a with
+ T.Value s -> s
+ | _ -> raise (IllFormedXml 0)
+;;
+
+exception DontKnowWhatToDo;;
+
+let rec string_of_annotations n =
+ let module D = Pxp_document in
+ let module T = Pxp_types in
+ match n#node_type with
+ D.T_element s ->
+ "<" ^ s ^
+ List.fold_right
+ (fun att i ->
+ match n#attribute att with
+ T.Value s -> " " ^ att ^ "=\"" ^ s ^ "\"" ^ i
+ | T.Implied_value -> i
+ | T.Valuelist l -> " " ^ att ^ "=\"" ^ String.concat " " l ^ "\"" ^ i
+ ) (n#attribute_names) "" ^
+ (match n#sub_nodes with
+ [] -> "/>"
+ | l ->
+ ">" ^
+ String.concat "" (List.map string_of_annotations l) ^
+ "</" ^ s ^ ">"
+ )
+ | D.T_data -> n#data
+ | _ -> raise DontKnowWhatToDo
+;;
+
+let get_annotation n =
+ String.concat "" (List.map string_of_annotations (n#sub_nodes))
+;;
+
+let annotate_object ann obj =
+ let module C = Cic in
+ let rann =
+ match obj with
+ C.ADefinition (_, rann, _, _, _, _) -> rann
+ | C.AAxiom (_, rann, _, _, _) -> rann
+ | C.AVariable (_, rann, _, _, _) -> rann
+ | C.ACurrentProof (_, rann, _, _, _, _) -> rann
+ | C.AInductiveDefinition (_, rann, _, _, _) -> rann
+ in
+ rann := Some ann
+;;
+
+let annotate_term ann term =
+ let module C = Cic in
+ let rann =
+ match term with
+ C.ARel (_, rann, _, _) -> rann
+ | C.AVar (_, rann, _) -> rann
+ | C.AMeta (_, rann, _) -> rann
+ | C.ASort (_, rann, _) -> rann
+ | C.AImplicit (_, rann) -> rann
+ | C.ACast (_, rann, _, _) -> rann
+ | C.AProd (_, rann, _, _, _) -> rann
+ | C.ALambda (_, rann, _, _, _) -> rann
+ | C.ALetIn (_, rann, _, _, _) -> rann
+ | C.AAppl (_, rann, _) -> rann
+ | C.AConst (_, rann, _, _) -> rann
+ | C.AAbst (_, rann, _) -> rann
+ | C.AMutInd (_, rann, _, _, _) -> rann
+ | C.AMutConstruct (_, rann, _, _, _, _) -> rann
+ | C.AMutCase (_, rann, _, _, _, _, _, _) -> rann
+ | C.AFix (_, rann, _, _) -> rann
+ | C.ACoFix (_, rann, _, _) -> rann
+ in
+ rann := Some ann
+;;
+
+let annotate ids_to_targets n =
+ let module D = Pxp_document in
+ let module C = Cic in
+ let annotate_elem n =
+ let ntype = n # node_type in
+ match ntype with
+ D.T_element "Annotation" ->
+ let of_uri = string_of_attr (n # attribute "of") in
+ begin
+ try
+ match Hashtbl.find ids_to_targets of_uri with
+ C.Object o -> annotate_object (get_annotation n) o
+ | C.Term t -> annotate_term (get_annotation n) t
+ with
+ Not_found -> assert false
+ end
+ | D.T_element _ | D.T_data ->
+ raise (IllFormedXml 1)
+ | _ -> raise DontKnowWhatToDo
+ in
+ match n # node_type with
+ D.T_element "Annotations" ->
+ List.iter annotate_elem (n # sub_nodes)
+ | _ -> raise (IllFormedXml 2)
+;;