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/
28 (** user hit the cancel button *)
42 type mathViewer_entry =
43 [ `About of abouts (* current proof *)
44 | `Check of string (* term *)
45 | `NCic of NCic.term * NCic.context * NCic.metasenv * NCic.substitution
46 | `Dir of string (* "directory" in cic uris namespace *)
47 | `NRef of NReference.reference (* cic object uri *)
50 let string_of_entry = function
51 | `About `Blank -> "about:blank"
52 | `About `Current_proof -> "about:proof"
53 | `About `Us -> "about:us"
54 | `About `Coercions -> "about:coercions?tred=true"
55 | `About `CoercionsFull -> "about:coercions"
56 | `About `TeX -> "about:tex"
57 | `About `Grammar -> "about:grammar"
58 | `About `Hints -> "about:hints"
59 | `Check _ -> "check:"
60 | `NCic (_, _, _, _) -> "nterm:"
62 | `NRef nref -> NReference.string_of_reference nref
64 let entry_of_string = function
65 | "about:blank" -> `About `Blank
66 | "about:proof" -> `About `Current_proof
67 | "about:us" -> `About `Us
68 | "about:hints" -> `About `Hints
69 | "about:coercions?tred=true" -> `About `Coercions
70 | "about:coercions" -> `About `CoercionsFull
71 | "about:tex" -> `About `TeX
72 | "about:grammar" -> `About `Grammar
73 | _ -> (* only about entries supported ATM *)
74 raise (Invalid_argument "entry_of_string")