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 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 =
40 List.map MetadataTypes.constr_of_metadata
41 (MetadataExtractor.compute ~body:None ~ty)
43 Constr.at_least ~dbh constraints
46 let len = String.length s in
47 let suffix = String.sub s (len-4) 4 in
50 let ( ** ) x y = int_of_float ((float_of_int x) ** (float_of_int y))
52 let signature_of_hypothesis context =
57 | Some (_, Cic.Decl t)
58 | Some (_, Cic.Def (t, _)) ->
59 Constr.StringSet.union set (Constr.constants_of t))
60 Constr.StringSet.empty context
63 let set1 = List.fold_right Constr.StringSet.add l1 Constr.StringSet.empty in
64 let set2 = List.fold_right Constr.StringSet.add l2 Constr.StringSet.empty in
65 Constr.StringSet.elements (Constr.StringSet.inter set1 set2)
67 let filter_uris_forward ~dbh (main, constants) uris =
71 | Some (main, types) -> main :: types
74 List.fold_right Constr.StringSet.add main_uris constants
76 List.filter (Constr.at_most ~dbh full_signature) uris
78 let filter_uris_backward ~dbh signature uris =
80 List.map snd (MetadataConstraints.sigmatch ~dbh ~where:`Statement signature)
82 intersect uris siguris
84 let hint ~(dbh:Dbi.connection) ?signature ((proof, goal) as status) =
85 let (_, metasenv, _, _) = proof in
86 let (_, context, ty) = CicUtil.lookup_meta goal metasenv in
87 let (uris, (main, sig_constants)) =
89 | Some signature -> (Constr.sigmatch ~dbh signature, signature)
90 | None -> (Constr.cmatch' ~dbh ty, Constr.signature_of ty)
92 let uris = List.filter nonvar (List.map snd uris) in
95 | None -> Constr.StringSet.empty
96 | Some (main, types) ->
97 List.fold_right Constr.StringSet.add (main :: types)
98 Constr.StringSet.empty
101 Constr.StringSet.diff (signature_of_hypothesis context) types_constants
103 let other_constants = Constr.StringSet.union sig_constants hyp_constants in
105 if (List.length uris < 2 ** (Constr.StringSet.cardinal other_constants))
107 prerr_endline "MetadataQuery: large sig, falling back to old method";
108 filter_uris_forward ~dbh (main, other_constants) uris
110 filter_uris_backward ~dbh (main, other_constants) uris
115 ProofEngineTypes.apply_tactic
116 (PrimitiveTactics.apply_tac ~term:(CicUtil.term_of_uri uri))