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/
29 module TA = GrafiteAst
32 let debug_print = if debug then prerr_endline else ignore
34 (** raised when one of the script margins (top or bottom) is reached *)
37 let safe_substring s i j =
38 try String.sub s i j with Invalid_argument _ -> assert false
40 let heading_nl_RE = Pcre.regexp "^\\s*\n\\s*"
41 let heading_nl_RE' = Pcre.regexp "^(\\s*\n\\s*)((.|\n)*)"
42 let only_dust_RE = Pcre.regexp "^(\\s|\n|%%[^\n]*\n)*$"
43 let multiline_RE = Pcre.regexp "^\n[^\n]+$"
44 let newline_RE = Pcre.regexp "\n"
47 if Pcre.pmatch ~rex:multiline_RE str then
48 "\n(** " ^ (Pcre.replace ~rex:newline_RE str) ^ " *)"
50 "\n(**\n" ^ str ^ "\n*)"
53 let s = Pcre.replace ~rex:heading_nl_RE s in
55 let nl_pos = String.index s '\n' in
59 (** creates a statement AST for the Goal tactic, e.g. "goal 7" *)
61 let module A = GrafiteAst in
62 let loc = DisambiguateTypes.dummy_floc in
63 A.Executable (loc, A.Tactical (loc,
64 A.Tactic (loc, A.Goal (loc, n)),
68 mathviewer:MatitaTypes.mathViewer;
69 urichooser: UriManager.uri list -> UriManager.uri list;
70 ask_confirmation: title:string -> message:string -> [`YES | `NO | `CANCEL];
71 develcreator: containing:string option -> unit;
72 mutable filenamedata: string option * MatitamakeLib.development option
75 let eval_with_engine guistuff status user_goal parsed_text st =
76 let module TAPp = GrafiteAstPp in
78 match guistuff.filenamedata with
80 | None,Some devel -> [MatitamakeLib.root_for_development devel ]
82 match MatitamakeLib.development_for_dir (Filename.dirname f) with
84 | Some devel -> [MatitamakeLib.root_for_development devel ]
86 let parsed_text_length = String.length parsed_text in
88 match st with TA.Executable (loc,ex) -> loc, ex | _ -> assert false in
89 let initial_space,parsed_text =
91 let pieces = Pcre.extract ~rex:heading_nl_RE' parsed_text in
92 pieces.(1), pieces.(2)
94 Not_found -> "", parsed_text in
95 (* we add the goal command if needed *)
96 let inital_space,new_status,new_status_and_text_list' =
97 match status.proof_status with
98 (* | Incomplete_proof { stack = stack }
99 when not (List.mem user_goal (Continuationals.head_goals stack)) ->
101 MatitaEngine.eval_ast
102 ~do_heavy_checks:true status (goal_ast user_goal)
104 let initial_space = if initial_space = "" then "\n" else initial_space
108 initial_space ^ TAPp.pp_tactical (TA.Select (loc, [user_goal])) ] *)
109 | _ -> initial_space,status,[] in
111 GrafiteEngine.eval_ast
112 ~baseuri_of_script:(GrafiteParserMisc.baseuri_of_script ~include_paths:include_)
113 ~disambiguate_tactic:GrafiteDisambiguate.disambiguate_tactic
114 ~disambiguate_command:GrafiteDisambiguate.disambiguate_command
115 ~do_heavy_checks:true new_status st
119 | TA.Command (_, TA.Alias _)
120 | TA.Command (_, TA.Include _)
121 | TA.Command (_, TA.Interpretation _) -> []
122 | _ -> MatitaSync.alias_diff ~from:status new_status
124 (* we remove the defined object since we consider them "automatic aliases" *)
126 TA.Comment (DisambiguateTypes.dummy_floc,
127 TA.Note (DisambiguateTypes.dummy_floc, ""))
129 let initial_space,status,new_status_and_text_list_rev =
130 let module DTE = DisambiguateTypes.Environment in
131 let module UM = UriManager in
132 let baseuri = GrafiteTypes.get_string_option new_status "baseuri" in
134 fun (initial_space,status,acc) (k,((v,_) as value)) ->
137 UM.buri_of_uri (UM.uri_of_string v) = baseuri
139 UriManager.IllFormedUri _ -> false (* v is a description, not a URI *)
142 initial_space,status,acc
146 if initial_space = "" then "\n" else initial_space in
148 DisambiguatePp.pp_environment
149 (DisambiguateTypes.Environment.add k value
150 DisambiguateTypes.Environment.empty) in
152 MatitaSync.set_proof_aliases status [k,value]
154 "\n",new_status,((new_status, (new_text, dummy_st))::acc)
155 ) (initial_space,status,[]) new_aliases in
156 let parsed_text = initial_space ^ parsed_text in
158 List.rev new_status_and_text_list_rev @ new_status_and_text_list' @
159 [new_status, (parsed_text, st)]
161 res,parsed_text_length
163 let eval_with_engine guistuff status user_goal parsed_text st =
165 eval_with_engine guistuff status user_goal parsed_text st
167 | GrafiteParserMisc.UnableToInclude what
168 | GrafiteEngine.IncludedFileNotCompiled what as exc ->
169 let compile_needed_and_go_on d =
172 while Glib.Main.pending () do ignore(Glib.Main.iteration false); done
174 if not(MatitamakeLib.build_development_in_bg ~target refresh_cb d) then
177 eval_with_engine guistuff status user_goal parsed_text st
179 let do_nothing () = [], 0 in
180 let handle_with_devel d =
181 let name = MatitamakeLib.name_for_development d in
182 let title = "Unable to include " ^ what in
184 what ^ " is handled by development <b>" ^ name ^ "</b>.\n\n" ^
185 "<i>Should I compile it and Its dependencies?</i>"
187 (match guistuff.ask_confirmation ~title ~message with
188 | `YES -> compile_needed_and_go_on d
190 | `CANCEL -> do_nothing ())
192 let handle_without_devel filename =
193 let title = "Unable to include " ^ what in
195 what ^ " is <b>not</b> handled by a development.\n" ^
196 "All dependencies are automatically solved for a development.\n\n" ^
197 "<i>Do you want to set up a development?</i>"
199 (match guistuff.ask_confirmation ~title ~message with
203 guistuff.develcreator ~containing:(Some (Filename.dirname f))
204 | None -> guistuff.develcreator ~containing:None);
207 | `CANCEL -> do_nothing())
209 match guistuff.filenamedata with
210 | None,None -> handle_without_devel None
211 | None,Some d -> handle_with_devel d
213 match MatitamakeLib.development_for_dir (Filename.dirname f) with
214 | None -> handle_without_devel (Some f)
215 | Some d -> handle_with_devel d
218 let disambiguate_macro_term term status user_goal =
219 let module MD = MatitaDisambiguator in
220 let dbd = LibraryDb.instance () in
221 let metasenv = GrafiteTypes.get_proof_metasenv status in
222 let context = GrafiteTypes.get_proof_context status user_goal in
224 MD.disambiguate_term ~dbd ~context ~metasenv ~aliases:status.aliases
225 ~universe:(Some status.multi_aliases) term in
230 let eval_macro guistuff status user_goal unparsed_text parsed_text script mac =
231 let module TAPp = GrafiteAstPp in
232 let module MQ = MetadataQuery in
233 let module MDB = LibraryDb in
234 let module CTC = CicTypeChecker in
235 let module CU = CicUniv in
236 (* no idea why ocaml wants this *)
237 let parsed_text_length = String.length parsed_text in
238 let dbd = LibraryDb.instance () in
241 | TA.WMatch (loc, term) ->
242 let term = disambiguate_macro_term term status user_goal in
243 let l = Whelp.match_term ~dbd term in
245 MatitaMisc.strip_suffix ~suffix:"."
246 (HExtlib.trim_blanks unparsed_text)
248 let entry = `Whelp (query_url, l) in
249 guistuff.mathviewer#show_uri_list ~reuse:true ~entry l;
250 [], parsed_text_length
251 | TA.WInstance (loc, term) ->
252 let term = disambiguate_macro_term term status user_goal in
253 let l = Whelp.instance ~dbd term in
254 let entry = `Whelp (TAPp.pp_macro_cic (TA.WInstance (loc, term)), l) in
255 guistuff.mathviewer#show_uri_list ~reuse:true ~entry l;
256 [], parsed_text_length
257 | TA.WLocate (loc, s) ->
258 let l = Whelp.locate ~dbd s in
259 let entry = `Whelp (TAPp.pp_macro_cic (TA.WLocate (loc, s)), l) in
260 guistuff.mathviewer#show_uri_list ~reuse:true ~entry l;
261 [], parsed_text_length
262 | TA.WElim (loc, term) ->
263 let term = disambiguate_macro_term term status user_goal in
266 | Cic.MutInd (uri,n,_) -> UriManager.uri_of_uriref uri n None
267 | _ -> failwith "Not a MutInd"
269 let l = Whelp.elim ~dbd uri in
270 let entry = `Whelp (TAPp.pp_macro_cic (TA.WElim (loc, term)), l) in
271 guistuff.mathviewer#show_uri_list ~reuse:true ~entry l;
272 [], parsed_text_length
273 | TA.WHint (loc, term) ->
274 let term = disambiguate_macro_term term status user_goal in
275 let s = ((None,[0,[],term], Cic.Meta (0,[]) ,term),0) in
276 let l = List.map fst (MQ.experimental_hint ~dbd s) in
277 let entry = `Whelp (TAPp.pp_macro_cic (TA.WHint (loc, term)), l) in
278 guistuff.mathviewer#show_uri_list ~reuse:true ~entry l;
279 [], parsed_text_length
282 let proof = GrafiteTypes.get_current_proof status in
283 let proof_status = proof, user_goal in
284 let l = List.map fst (MQ.experimental_hint ~dbd proof_status) in
285 let selected = guistuff.urichooser l in
287 | [] -> [], parsed_text_length
289 let suri = UriManager.string_of_uri uri in
291 TA.Executable (loc, (TA.Tactical (loc,
293 TA.Apply (loc, CicNotationPt.Uri (suri, None))),
297 GrafiteEngine.eval_ast
298 ~baseuri_of_script:(fun _ -> assert false)
299 ~disambiguate_tactic:GrafiteDisambiguate.disambiguate_tactic
300 ~disambiguate_command:GrafiteDisambiguate.disambiguate_command
303 comment parsed_text ^
304 "\n" ^ TAPp.pp_statement ast
306 [ new_status , (extra_text, ast) ], parsed_text_length
309 "The result of the urichooser should be only 1 uri, not:\n";
311 fun u -> HLog.error (UriManager.string_of_uri u ^ "\n")
314 | TA.Check (_,term) ->
315 let metasenv = GrafiteTypes.get_proof_metasenv status in
316 let context = GrafiteTypes.get_proof_context status user_goal in
318 MatitaDisambiguator.disambiguate_term ~dbd ~context ~metasenv
319 ~aliases:status.aliases ~universe:(Some status.multi_aliases) term
321 let _, metasenv , term, ugraph =
326 let ty,_ = CTC.type_of_aux' metasenv context term ugraph in
327 let t_and_ty = Cic.Cast (term,ty) in
328 guistuff.mathviewer#show_entry (`Cic (t_and_ty,metasenv));
329 [], parsed_text_length
332 let status = script#status.proof_status in
335 | _ -> script#retract ();go_back()
337 [], parsed_text_length, Some go_back
338 | TA.Redo (_, Some i) -> [], parsed_text_length,
339 Some (fun () -> for j = 1 to i do advance () done)
340 | TA.Redo (_, None) -> [], parsed_text_length,
341 Some (fun () -> advance ())
342 | TA.Undo (_, Some i) -> [], parsed_text_length,
343 Some (fun () -> for j = 1 to i do script#retract () done)
344 | TA.Undo (_, None) -> [], parsed_text_length,
345 Some (fun () -> script#retract ()) *)
347 | TA.Quit _ -> failwith "not implemented"
348 | TA.Print (_,kind) -> failwith "not implemented"
349 | TA.Search_pat (_, search_kind, str) -> failwith "not implemented"
350 | TA.Search_term (_, search_kind, term) -> failwith "not implemented"
352 let eval_executable guistuff status user_goal unparsed_text parsed_text script
355 let module TAPp = GrafiteAstPp in
356 let module MD = MatitaDisambiguator in
357 let module ML = MatitaMisc in
359 | TA.Command (loc, _) | TA.Tactical (loc, _, _) ->
361 (match GrafiteParserMisc.baseuri_of_baseuri_decl (TA.Executable (loc,ex)) with
364 if not (GrafiteMisc.is_empty u) then
366 guistuff.ask_confirmation
367 ~title:"Baseuri redefinition"
369 "Baseuri " ^ u ^ " already exists.\n" ^
370 "Do you want to redefine the corresponding "^
371 "part of the library?")
374 let basedir = Helm_registry.get "matita.basedir" in
375 LibraryClean.clean_baseuris ~basedir [u]
377 | `CANCEL -> raise MatitaTypes.Cancel);
379 guistuff status user_goal parsed_text (TA.Executable (loc, ex))
380 with MatitaTypes.Cancel -> [], 0)
381 | TA.Macro (_,mac) ->
382 eval_macro guistuff status user_goal unparsed_text parsed_text script mac
384 let rec eval_statement (buffer : GText.buffer) guistuff status user_goal
387 let st, unparsed_text =
390 if Pcre.pmatch ~rex:only_dust_RE text then raise Margin;
391 GrafiteParser.parse_statement (Ulexing.from_utf8_string text), text
392 | `Ast (st, text) -> st, text
394 let text_of_loc loc =
395 let parsed_text_length = snd (HExtlib.loc_of_floc loc) in
396 let parsed_text = safe_substring unparsed_text 0 parsed_text_length in
397 parsed_text, parsed_text_length
400 | GrafiteAst.Comment (loc, _) ->
401 let parsed_text, parsed_text_length = text_of_loc loc in
402 let remain_len = String.length unparsed_text - parsed_text_length in
403 let s = String.sub unparsed_text parsed_text_length remain_len in
406 eval_statement buffer guistuff status user_goal script
409 HExtlib.Localized (floc, exn) ->
410 HExtlib.raise_localized_exception ~offset:parsed_text_length floc exn
411 | MatitaDisambiguator.DisambiguationError (offset,errorll) ->
413 (MatitaDisambiguator.DisambiguationError
414 (offset+parsed_text_length, errorll))
417 | (status, (text, ast)) :: tl ->
418 ((status, (parsed_text ^ text, ast))::tl), (parsed_text_length + len)
420 | GrafiteAst.Executable (loc, ex) ->
421 let parsed_text, parsed_text_length = text_of_loc loc in
422 eval_executable guistuff status user_goal unparsed_text parsed_text
425 let fresh_script_id =
429 class script ~(source_view: GSourceView.source_view)
430 ~(init: GrafiteTypes.status)
431 ~(mathviewer: MatitaTypes.mathViewer)
437 let buffer = source_view#buffer in
438 let source_buffer = source_view#source_buffer in
440 val scriptId = fresh_script_id ()
443 mathviewer = mathviewer;
444 urichooser = urichooser;
445 ask_confirmation = ask_confirmation;
446 develcreator = develcreator;
447 filenamedata = (None, None)}
449 method private getFilename =
450 match guistuff.filenamedata with Some f,_ -> f | _ -> assert false
452 method filename = self#getFilename
454 method private ppFilename =
455 match guistuff.filenamedata with
457 | None,_ -> sprintf ".unnamed%d.ma" scriptId
460 ignore (GMain.Timeout.add ~ms:300000
461 ~callback:(fun _ -> self#_saveToBackupFile ();true));
462 ignore (buffer#connect#modified_changed
463 (fun _ -> set_star (Filename.basename self#ppFilename) buffer#modified))
465 val mutable statements = []; (** executed statements *)
466 val mutable history = [ init ];
467 (** list of states before having executed statements. Head element of this
468 * list is the current state, last element is the state at the beginning of
470 * Invariant: this list length is 1 + length of statements *)
472 (** goal as seen by the user (i.e. metano corresponding to current tab) *)
473 val mutable userGoal = ~-1
475 (** text mark and tag representing locked part of a script *)
477 buffer#create_mark ~name:"locked" ~left_gravity:true buffer#start_iter
478 val locked_tag = buffer#create_tag [`BACKGROUND "lightblue"; `EDITABLE false]
479 val error_tag = buffer#create_tag [`UNDERLINE `SINGLE; `FOREGROUND "red"]
481 method locked_mark = locked_mark
482 method locked_tag = locked_tag
483 method error_tag = error_tag
485 (* history can't be empty, the invariant above grant that it contains at
486 * least the init status *)
487 method status = match history with hd :: _ -> hd | _ -> assert false
489 method private _advance ?statement () =
491 let (entries, parsed_len) =
492 eval_statement buffer guistuff self#status userGoal self st
494 let (new_statuses, new_statements, new_asts) =
495 let statuses, statements = List.split entries in
496 let texts, asts = List.split statements in
497 statuses, texts, asts
499 history <- List.rev new_statuses @ history;
500 statements <- List.rev new_statements @ statements;
501 let start = buffer#get_iter_at_mark (`MARK locked_mark) in
502 let new_text = String.concat "" new_statements in
503 if statement <> None then
504 buffer#insert ~iter:start new_text
506 let s = match st with `Raw s | `Ast (_, s) -> s in
507 if new_text <> String.sub s 0 parsed_len then
509 let stop = start#copy#forward_chars parsed_len in
510 buffer#delete ~start ~stop;
511 buffer#insert ~iter:start new_text;
513 self#moveMark (String.length new_text);
515 (match List.rev new_asts with (* advance again on punctuation *)
516 | TA.Executable (_, TA.Tactical (_, tac, _)) :: _ ->
518 (buffer#get_iter_at_mark (`MARK locked_mark))#offset
520 let text = self#getFuture in
522 (match parse_statement baseoffset 0 buffer text with
523 | TA.Executable (loc, TA.Tactical (_, tac, None)) as st
524 when GrafiteAst.is_punctuation tac ->
525 let len = snd (CicNotationPt.loc_of_floc loc) in
526 aux (`Ast (st, String.sub text 0 len))
528 with CicNotationParser.Parse_error _ | End_of_file -> ())
532 let s = match statement with Some s -> s | None -> self#getFuture in
533 HLog.debug ("evaluating: " ^ first_line s ^ " ...");
534 (try aux (`Raw s) with End_of_file -> raise Margin)
536 method private _retract offset status new_statements new_history =
537 let cur_status = match history with s::_ -> s | [] -> assert false in
538 MatitaSync.time_travel ~present:cur_status ~past:status;
539 statements <- new_statements;
540 history <- new_history;
541 self#moveMark (- offset)
543 method advance ?statement () =
545 self#_advance ?statement ();
548 | Margin -> self#notify
549 | exc -> self#notify; raise exc
553 let cmp,new_statements,new_history,status =
554 match statements,history with
555 stat::statements, _::(status::_ as history) ->
556 String.length stat, statements, history, status
557 | [],[_] -> raise Margin
558 | _,_ -> assert false
560 self#_retract cmp status new_statements new_history;
563 | Margin -> self#notify
564 | exc -> self#notify; raise exc
566 method private getFuture =
567 buffer#get_text ~start:(buffer#get_iter_at_mark (`MARK locked_mark))
568 ~stop:buffer#end_iter ()
571 (** @param rel_offset relative offset from current position of locked_mark *)
572 method private moveMark rel_offset =
573 let mark = `MARK locked_mark in
574 let old_insert = buffer#get_iter_at_mark `INSERT in
575 buffer#remove_tag locked_tag ~start:buffer#start_iter ~stop:buffer#end_iter;
576 let current_mark_pos = buffer#get_iter_at_mark mark in
578 match rel_offset with
579 | 0 -> current_mark_pos
580 | n when n > 0 -> current_mark_pos#forward_chars n
581 | n (* when n < 0 *) -> current_mark_pos#backward_chars (abs n)
583 buffer#move_mark mark ~where:new_mark_pos;
584 buffer#apply_tag locked_tag ~start:buffer#start_iter ~stop:new_mark_pos;
585 buffer#move_mark `INSERT old_insert;
586 let mark_position = buffer#get_iter_at_mark mark in
587 if source_view#move_mark_onscreen mark then
589 buffer#move_mark mark mark_position;
590 source_view#scroll_to_mark ~use_align:true ~xalign:1.0 ~yalign:0.1 mark;
592 while Glib.Main.pending () do ignore(Glib.Main.iteration false); done
594 method clean_dirty_lock =
595 let lock_mark_iter = buffer#get_iter_at_mark (`MARK locked_mark) in
596 buffer#remove_tag locked_tag ~start:buffer#start_iter ~stop:buffer#end_iter;
597 buffer#apply_tag locked_tag ~start:buffer#start_iter ~stop:lock_mark_iter
599 val mutable observers = []
601 method addObserver (o: GrafiteTypes.status -> unit) =
602 observers <- o :: observers
604 method private notify =
605 let status = self#status in
606 List.iter (fun o -> o status) observers
608 method loadFromFile f =
609 buffer#set_text (HExtlib.input_file f);
611 buffer#set_modified false
613 method assignFileName file =
614 let abspath = MatitaMisc.absolute_path file in
615 let devel = MatitamakeLib.development_for_dir (Filename.dirname abspath) in
616 guistuff.filenamedata <- Some abspath, devel
618 method saveToFile () =
619 let oc = open_out self#getFilename in
620 output_string oc (buffer#get_text ~start:buffer#start_iter
621 ~stop:buffer#end_iter ());
623 buffer#set_modified false
625 method private _saveToBackupFile () =
626 if buffer#modified then
628 let f = self#ppFilename ^ "~" in
629 let oc = open_out f in
630 output_string oc (buffer#get_text ~start:buffer#start_iter
631 ~stop:buffer#end_iter ());
633 HLog.debug ("backup " ^ f ^ " saved")
636 method private goto_top =
637 MatitaSync.time_travel ~present:self#status ~past:init
639 method private reset_buffer =
644 buffer#remove_tag locked_tag ~start:buffer#start_iter ~stop:buffer#end_iter;
645 buffer#move_mark (`MARK locked_mark) ~where:buffer#start_iter
649 source_buffer#begin_not_undoable_action ();
650 buffer#delete ~start:buffer#start_iter ~stop:buffer#end_iter;
651 source_buffer#end_not_undoable_action ();
652 buffer#set_modified false
655 let template = HExtlib.input_file BuildTimeConf.script_template in
656 buffer#insert ~iter:(buffer#get_iter `START) template;
657 guistuff.filenamedata <-
658 (None,MatitamakeLib.development_for_dir (Unix.getcwd ()));
659 buffer#set_modified false;
660 set_star (Filename.basename self#ppFilename) false
662 method goto (pos: [`Top | `Bottom | `Cursor]) () =
663 let old_locked_mark =
665 (buffer#create_mark ~name:"old_locked_mark"
666 ~left_gravity:true (buffer#get_iter_at_mark (`MARK locked_mark))) in
667 let getpos _ = buffer#get_iter_at_mark (`MARK locked_mark) in
668 let getoldpos _ = buffer#get_iter_at_mark old_locked_mark in
669 let dispose_old_locked_mark () = buffer#delete_mark old_locked_mark in
672 dispose_old_locked_mark ();
680 let newpos = getpos () in
681 if (getoldpos ())#compare newpos < 0 then
683 buffer#move_mark old_locked_mark newpos;
688 dispose_old_locked_mark ();
691 | Margin -> dispose_old_locked_mark (); self#notify
692 | exc -> dispose_old_locked_mark (); self#notify; raise exc)
694 let locked_iter () = buffer#get_iter_at_mark (`NAME "locked") in
695 let cursor_iter () = buffer#get_iter_at_mark `INSERT in
698 (buffer#create_mark ~name:"initial_insert"
699 ~left_gravity:true (cursor_iter ())) in
700 let dispose_remember () = buffer#delete_mark remember in
701 let remember_iter () =
702 buffer#get_iter_at_mark (`NAME "initial_insert") in
703 let cmp () = (locked_iter ())#offset - (remember_iter ())#offset in
705 let forward_until_cursor () = (* go forward until locked > cursor *)
708 if cmp () < 0 && (getoldpos ())#compare (getpos ()) < 0
711 buffer#move_mark old_locked_mark (getpos ());
717 let rec back_until_cursor len = (* go backward until locked < cursor *)
719 statements, (status::_ as history) when len <= 0 ->
720 self#_retract (icmp - len) status statements history
721 | statement::tl1, _::tl2 ->
722 back_until_cursor (len - String.length statement) (tl1,tl2)
723 | _,_ -> assert false
727 if icmp < 0 then (* locked < cursor *)
728 (forward_until_cursor (); self#notify)
729 else if icmp > 0 then (* locked > cursor *)
730 (back_until_cursor icmp (statements,history); self#notify)
731 else (* cursor = locked *)
735 dispose_old_locked_mark ();
737 | Margin -> dispose_remember (); dispose_old_locked_mark (); self#notify
738 | exc -> dispose_remember (); dispose_old_locked_mark ();
739 self#notify; raise exc)
741 method onGoingProof () =
742 match self#status.proof_status with
743 | No_proof | Proof _ -> false
744 | Incomplete_proof _ -> true
745 | Intermediate _ -> assert false
747 (* method proofStatus = MatitaTypes.get_proof_status self#status *)
748 method proofMetasenv = GrafiteTypes.get_proof_metasenv self#status
749 method proofContext = GrafiteTypes.get_proof_context self#status userGoal
750 method proofConclusion= GrafiteTypes.get_proof_conclusion self#status userGoal
751 method stack = GrafiteTypes.get_stack self#status
752 method setGoal n = userGoal <- n
753 method goal = userGoal
756 let s = self#getFuture in
757 let rec is_there_and_executable s =
758 if Pcre.pmatch ~rex:only_dust_RE s then raise Margin;
759 let st = GrafiteParser.parse_statement (Ulexing.from_utf8_string s) in
761 | GrafiteAst.Comment (loc,_)->
762 let parsed_text_length = snd (HExtlib.loc_of_floc loc) in
763 let remain_len = String.length s - parsed_text_length in
764 let next = String.sub s parsed_text_length remain_len in
765 is_there_and_executable next
766 | GrafiteAst.Executable (loc, ex) -> false
769 is_there_and_executable s
771 | CicNotationParser.Parse_error _ -> false
772 | Margin | End_of_file -> true
776 HLog.debug "script status:";
777 HLog.debug ("history size: " ^ string_of_int (List.length history));
778 HLog.debug (sprintf "%d statements:" (List.length statements));
779 List.iter HLog.debug statements;
780 HLog.debug ("Current file name: " ^
781 (match guistuff.filenamedata with
782 |None,_ -> "[ no name ]"
787 let _script = ref None
789 let script ~source_view ~init ~mathviewer ~urichooser ~develcreator ~ask_confirmation ~set_star ()
792 ~source_view ~init ~mathviewer ~ask_confirmation ~urichooser ~develcreator ~set_star ()
797 let current () = match !_script with None -> assert false | Some s -> s