1 (* Copyright (C) 2004, 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 open DisambiguateTypes
30 exception Invalid_choice
31 exception Choice_not_found of string
33 let symbol_choices = Hashtbl.create 1023
34 let num_choices = ref []
36 let add_symbol_choice symbol codomain_item =
39 Hashtbl.find symbol_choices symbol
42 Hashtbl.replace symbol_choices symbol (codomain_item :: current_choices)
44 let add_binary_op symbol dsc appl_head =
45 add_symbol_choice symbol
51 | _ -> raise Invalid_choice
53 Cic.Appl [ appl_head; t1; t2 ]))
55 let add_unary_op symbol dsc appl_head =
56 add_symbol_choice symbol
59 let t = match args with [t] -> t | _ -> raise Invalid_choice in
60 Cic.Appl [ appl_head; t ]))
62 let add_num_choice choice = num_choices := choice :: !num_choices
64 let lookup_symbol_choices symbol =
66 Hashtbl.find symbol_choices symbol
69 let lookup_num_choices () = !num_choices
71 let has_description dsc = (fun x -> fst x = dsc)
73 let lookup_symbol_by_dsc symb dsc =
75 List.find (has_description dsc) (Hashtbl.find symbol_choices symb)
77 raise (Choice_not_found (sprintf "Symbol %s, dsc %s" symb dsc))
79 let lookup_num_by_dsc dsc =
81 List.find (has_description dsc) !num_choices
82 with Not_found -> raise (Choice_not_found ("Num with dsc " ^ dsc))
84 (** initial table contents *)
87 add_binary_op "exists" "exists"
88 (Cic.MutInd (HelmLibraryObjects.Logic.ex_URI, 0, []));
89 add_symbol_choice "cast"
95 | _ -> raise Invalid_choice