helm/ocaml/tactics/tacticChaser.ml

   1 (* Copyright (C) 2000-2002, HELM Team.
   2  *
   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.
   6  *
   7  * HELM is free software; you can redistribute it and/or
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  10  * of the License, or (at your option) any later version.
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  15  * GNU General Public License for more details.
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  23  * http://cs.unibo.it/helm/.
  24  *)
  25
  26 (******************************************************************************)
  27 (*                                                                            *)
  28 (*                               PROJECT HELM                                 *)
  29 (*                                                                            *)
  30 (*                Claudio Sacerdoti Coen <sacerdot@cs.unibo.it>               *)
  31 (*                                 18/02/2003                                 *)
  32 (*                                                                            *)
  33 (*                                                                            *)
  34 (******************************************************************************)
  35
  36 module I = MQueryInterpreter
  37 module U = MQGUtil
  38 module G = MQueryGenerator
  39
  40   (* search arguments on which Apply tactic doesn't fail *)
  41 let matchConclusion mqi_handle ?(output_html = (fun _ -> ())) ~choose_must () ~status =
  42  let ((_, metasenv, _, _), metano) = status in
  43  let (_, ey ,ty) = List.find (function (m,_,_) -> m=metano) metasenv in
  44   let list_of_must,only = MQueryLevels.out_restr metasenv ey ty in
  45   let must = choose_must list_of_must only in
  46   let torigth_restriction (u,b) =
  47    (if b then `MainConclusion None else `InConclusion), u
  48   in
  49   let rigth_must = List.map torigth_restriction must in
  50   let rigth_only = Some (List.map torigth_restriction only) in
  51   let result =
  52          I.execute mqi_handle
  53             (G.query_of_constraints
  54         (Some U.universe_for_match_conclusion)
  55         (rigth_must,[],[]) (rigth_only,None,None)) in
  56         let uris =
  57          List.map
  58                 (function uri,_ ->
  59                         MQueryMisc.wrong_xpointer_format_from_wrong_xpointer_format' uri
  60                 ) result in
  61          let uris',exc =
  62                 let rec filter_out =
  63                  function
  64                                 [] -> [],""
  65                         | uri::tl ->
  66                                  let tl',exc = filter_out tl in
  67                                         try
  68                                          if
  69                                                 (try
  70                                                  ignore
  71                                                         (PrimitiveTactics.apply_tac
  72                                                          ~term:(MQueryMisc.term_of_cic_textual_parser_uri
  73                                                                 (MQueryMisc.cic_textual_parser_uri_of_string uri))
  74                                                          ~status);
  75                                                  true
  76                                                 with ProofEngineTypes.Fail _ -> false)
  77                                          then
  78                                                 uri::tl',exc
  79                                          else
  80                                                 tl',exc
  81                                         with
  82            (ProofEngineTypes.Fail _) as e ->
  83                                                  let exc' =
  84                                                   "<h1 color=\"red\"> ^ Exception raised trying to apply " ^
  85                                                          uri ^ ": " ^ Printexc.to_string e ^ " </h1>" ^ exc
  86                                                  in
  87                                                   tl',exc'
  88                 in
  89                  filter_out uris
  90          in
  91                 let html' =
  92                  " <h1>Objects that can actually be applied: </h1> " ^
  93                  String.concat "<br>" uris' ^ exc ^
  94                  " <h1>Number of false matches: " ^
  95                         string_of_int (List.length uris - List.length uris') ^ "</h1>" ^
  96                  " <h1>Number of good matches: " ^
  97                         string_of_int (List.length uris') ^ "</h1>"
  98                 in
  99                  output_html html' ;
 100                  uris'
 101 ;;
 102