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.
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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 module Constr = MetadataConstraints
30 let locate ~(dbh:Dbi.connection) name =
32 dbh#prepare (sprintf "SELECT value FROM %s WHERE source = \"%s\""
33 MetadataTypes.name_tbl name)
36 List.map (function [`String s] -> s | _ -> assert false) (query#fetchall ())
38 let match_term ~(dbh:Dbi.connection) ty =
39 let metadata = MetadataExtractor.compute ~body:None ~ty in
40 Constr.at_least ~dbh metadata
43 let len = String.length s in
44 let suffix = String.sub s (len-4) 4 in
47 let ( ** ) x y = int_of_float ((float_of_int x) ** (float_of_int y))
49 let signature_of_hypothesis context =
54 | Some (_, Cic.Decl t)
55 | Some (_, Cic.Def (t, _)) ->
56 Constr.StringSet.union set (Constr.constants_of t))
57 Constr.StringSet.empty context
59 let hint ~(dbh:Dbi.connection) ?signature ((proof, goal) as status) =
60 let (_, metasenv, _, _) = proof in
61 let (_, context, ty) = CicUtil.lookup_meta goal metasenv in
62 let (uris, (main, sig_constants)) =
64 | Some signature -> (Constr.sigmatch ~dbh signature, signature)
65 | None -> (Constr.cmatch' ~dbh ty, Constr.signature_of ty)
67 let uris = List.filter nonvar uris in
71 | None -> sig_constants
72 | Some (main, types) ->
73 List.fold_right Constr.StringSet.add sig_constants (main :: types)
78 | None -> Constr.StringSet.empty
79 | Some (main, types) ->
80 List.fold_right Constr.StringSet.add (main :: types)
81 Constr.StringSet.empty
84 Constr.StringSet.diff (signature_of_hypothesis context) types_constants
86 let other_constants = Constr.StringSet.union sig_constants hyp_constants in
88 if (List.length uris < 2 ** (Constr.StringSet.cardinal other_constants))
91 "MetadataQuery: large signature, falling back to old method";
92 List.filter (Filter_auto.filter_new_constants ~dbh all_constants main)
95 Filter_auto.filter_uris ~dbh all_constants uris main
100 ProofEngineTypes.apply_tactic
101 (PrimitiveTactics.apply_tac ~term:(CicUtil.term_of_uri uri))