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/
31 module TA = GrafiteAst
34 let debug_print = if debug then prerr_endline else ignore
36 (** raised when one of the script margins (top or bottom) is reached *)
38 exception NoUnfinishedProof
39 exception ActionCancelled of string
41 let safe_substring s i j =
42 try String.sub s i j with Invalid_argument _ -> assert false
44 let heading_nl_RE = Pcre.regexp "^\\s*\n\\s*"
45 let heading_nl_RE' = Pcre.regexp "^(\\s*\n\\s*)"
46 let only_dust_RE = Pcre.regexp "^(\\s|\n|%%[^\n]*\n)*$"
47 let multiline_RE = Pcre.regexp "^\n[^\n]+$"
48 let newline_RE = Pcre.regexp "\n"
49 let comment_RE = Pcre.regexp "\\(\\*(.|\n)*\\*\\)\n?" ~flags:[`UNGREEDY]
52 if Pcre.pmatch ~rex:multiline_RE str then
53 "\n(** " ^ (Pcre.replace ~rex:newline_RE str) ^ " *)"
55 "\n(**\n" ^ str ^ "\n*)"
57 let strip_comments str =
58 Pcre.qreplace ~templ:"\n" ~pat:"\n\n" (Pcre.qreplace ~rex:comment_RE str)
62 let s = Pcre.replace ~rex:heading_nl_RE s in
64 let nl_pos = String.index s '\n' in
69 mathviewer:MatitaTypes.mathViewer;
70 urichooser: UriManager.uri list -> UriManager.uri list;
71 ask_confirmation: title:string -> message:string -> [`YES | `NO | `CANCEL];
74 let eval_with_engine include_paths guistuff grafite_status user_goal
75 skipped_txt nonskipped_txt st
77 let parsed_text_length =
78 String.length skipped_txt + String.length nonskipped_txt
80 let text = skipped_txt ^ nonskipped_txt in
81 let prefix_len = MatitaGtkMisc.utf8_string_length skipped_txt in
82 let enriched_history_fragment =
83 MatitaEngine.eval_ast ~do_heavy_checks:(Helm_registry.get_bool
84 "matita.do_heavy_checks")
85 grafite_status (text,prefix_len,st)
87 let enriched_history_fragment = List.rev enriched_history_fragment in
91 (fun (acc, to_prepend) (status,alias) ->
93 | None -> (status,to_prepend ^ nonskipped_txt)::acc,""
95 let newtxt = LexiconAstPp.pp_alias value in
96 (status,to_prepend ^ newtxt ^ "\n")::acc, "")
97 ([],skipped_txt) enriched_history_fragment
99 res,"",parsed_text_length
102 (* this function calls the parser in a way that it does not perform inclusions,
103 * so that we can ensure the inclusion is performed after the included file
104 * is compiled (if needed). matitac does not need that, since it compiles files
105 * in the good order, here files may be compiled on demand. *)
106 let wrap_with_make include_paths (f : #LexiconEngine.status GrafiteParser.statement) x =
108 f ~never_include:true ~include_paths x
110 | GrafiteParser.NoInclusionPerformed mafilename ->
111 let root, buri, _, tgt =
112 try Librarian.baseuri_of_script ~include_paths mafilename
113 with Librarian.NoRootFor _ ->
114 HLog.error ("The included file '"^mafilename^"' has no root file,");
115 HLog.error "please create it.";
116 raise (Failure ("No root file for "^mafilename))
118 let b = MatitacLib.Make.make root [tgt] in
120 try f ~include_paths x with LexiconEngine.IncludedFileNotCompiled _ ->
122 (Failure ("Including: "^tgt^
123 "\nNothing to do... did you run matitadep?"))
124 else raise (Failure ("Compiling: " ^ tgt))
127 let pp_eager_statement_ast =
128 GrafiteAstPp.pp_statement ~term_pp:CicNotationPp.pp_term
129 ~lazy_term_pp:(fun _ -> assert false) ~obj_pp:(fun _ -> assert false)
131 let eval_nmacro include_paths (buffer : GText.buffer) guistuff grafite_status user_goal unparsed_text parsed_text script mac =
132 let parsed_text_length = String.length parsed_text in
134 | TA.Screenshot (_,name) ->
135 let status = script#grafite_status in
136 let _,_,menv,subst,_ = status#obj in
137 let name = Filename.dirname (script#filename) ^ "/" ^ name in
139 let selected = Continuationals.Stack.head_goals status#stack in
140 List.filter (fun x,_ -> List.mem x selected) menv
142 guistuff.mathviewer#screenshot status sequents menv subst name;
143 [status, parsed_text], "", parsed_text_length
145 let status = script#grafite_status in
146 let _,_,menv,subst,_ = status#obj in
148 try let _,(_,ctx,_) = List.hd menv in ctx
149 with Failure "hd" -> []
151 let m, s, status, t =
152 GrafiteDisambiguate.disambiguate_nterm
153 None status ctx menv subst (parsed_text,parsed_text_length,
154 CicNotationPt.Cast (t,CicNotationPt.Implicit `JustOne))
155 (* XXX use the metasenv, if possible *)
157 guistuff.mathviewer#show_entry (`NCic (t,ctx,m,s));
158 [status, parsed_text], "", parsed_text_length
159 | TA.NIntroGuess _loc ->
160 let names_ref = ref [] in
162 NTactics.intros_tac ~names_ref [] script#grafite_status
164 let rex = Pcre.regexp ~flags:[`MULTILINE] "\\A([\\n\\t\\r ]*).*\\Z" in
165 let nl = Pcre.replace ~rex ~templ:"$1" parsed_text in
166 [s, nl ^ "#" ^ String.concat " " !names_ref ^ ";"], "", parsed_text_length
167 | TA.NAutoInteractive (_loc, (None,a)) ->
168 let trace_ref = ref [] in
171 ~params:(None,a) ~trace_ref script#grafite_status
174 try List.assoc "depth" a
177 let trace = "/"^(if int_of_string depth > 1 then depth else "")^"/ by " in
179 match !trace_ref with
183 (HExtlib.filter_map (function
184 | CicNotationPt.NRef r -> Some (NCicPp.r2s true r)
188 let rex = Pcre.regexp ~flags:[`MULTILINE] "\\A([\\n\\t\\r ]*).*\\Z" in
189 let nl = Pcre.replace ~rex ~templ:"$1" parsed_text in
190 [s, nl ^ trace ^ thms ^ ";"], "", parsed_text_length
191 | TA.NAutoInteractive (_, (Some _,_)) -> assert false
193 let rec eval_macro include_paths (buffer : GText.buffer) guistuff grafite_status user_goal unparsed_text parsed_text script mac =
194 (* no idea why ocaml wants this *)
195 let parsed_text_length = String.length parsed_text in
196 let dbd = LibraryDb.instance () in
199 | TA.Hint (loc, rewrite) -> (* MATITA 1.0 *) assert false
200 | TA.Eval (_, kind, term) -> assert false (* MATITA 1.0
201 let metasenv = GrafiteTypes.get_proof_metasenv grafite_status in
205 | Some n -> GrafiteTypes.get_proof_context grafite_status n in
206 let ty,_ = CTC.type_of_aux' metasenv context term CicUniv.empty_ugraph in
210 CicReduction.normalize ~delta:true ~subst:[] context term
212 ProofEngineReduction.simpl context term
214 ProofEngineReduction.unfold ?what:None context term
215 | `Unfold (Some lazy_term) ->
217 lazy_term context metasenv CicUniv.empty_ugraph in
218 ProofEngineReduction.unfold ~what context term
220 CicReduction.whd ~delta:true ~subst:[] context term
222 let t_and_ty = Cic.Cast (term,ty) in
223 guistuff.mathviewer#show_entry (`Cic (t_and_ty,metasenv));
224 [(grafite_status#set_proof_status No_proof), parsed_text ],"",
225 parsed_text_length *)
227 and eval_executable include_paths (buffer : GText.buffer) guistuff
228 grafite_status user_goal unparsed_text skipped_txt nonskipped_txt
232 ignore (buffer#move_mark (`NAME "beginning_of_statement")
233 ~where:((buffer#get_iter_at_mark (`NAME "locked"))#forward_chars
234 (Glib.Utf8.length skipped_txt))) ;
235 eval_with_engine include_paths
236 guistuff grafite_status user_goal skipped_txt nonskipped_txt
237 (TA.Executable (loc, ex))
239 MatitaTypes.Cancel -> [], "", 0
240 | GrafiteEngine.Macro (_loc,lazy_macro) ->
242 let grafite_status,macro = lazy_macro context in
243 eval_macro include_paths buffer guistuff grafite_status
244 user_goal unparsed_text (skipped_txt ^ nonskipped_txt) script macro
245 | GrafiteEngine.NMacro (_loc,macro) ->
246 eval_nmacro include_paths buffer guistuff grafite_status
247 user_goal unparsed_text (skipped_txt ^ nonskipped_txt) script macro
250 and eval_statement include_paths (buffer : GText.buffer) guistuff
251 grafite_status user_goal script statement
253 let (grafite_status,st), unparsed_text =
256 if Pcre.pmatch ~rex:only_dust_RE text then raise Margin;
258 wrap_with_make include_paths
259 (GrafiteParser.parse_statement (Ulexing.from_utf8_string text))
263 | `Ast (st, text) -> (grafite_status, st), text
265 let text_of_loc floc =
266 let nonskipped_txt,_ = MatitaGtkMisc.utf8_parsed_text unparsed_text floc in
267 let start, stop = HExtlib.loc_of_floc floc in
268 let floc = HExtlib.floc_of_loc (0, start) in
269 let skipped_txt,_ = MatitaGtkMisc.utf8_parsed_text unparsed_text floc in
270 let floc = HExtlib.floc_of_loc (0, stop) in
271 let txt,len = MatitaGtkMisc.utf8_parsed_text unparsed_text floc in
272 txt,nonskipped_txt,skipped_txt,len
275 | GrafiteParser.LNone loc ->
276 let parsed_text, _, _, parsed_text_length = text_of_loc loc in
277 [grafite_status,parsed_text],"",
279 | GrafiteParser.LSome (GrafiteAst.Executable (loc, ex)) ->
280 let _, nonskipped, skipped, parsed_text_length = text_of_loc loc in
281 eval_executable include_paths buffer guistuff
282 grafite_status user_goal unparsed_text skipped nonskipped script ex loc
283 | GrafiteParser.LSome (GrafiteAst.Comment (loc, GrafiteAst.Code (_, ex)))
284 when Helm_registry.get_bool "matita.execcomments" ->
285 let _, nonskipped, skipped, parsed_text_length = text_of_loc loc in
286 eval_executable include_paths buffer guistuff
287 grafite_status user_goal unparsed_text skipped nonskipped script ex loc
288 | GrafiteParser.LSome (GrafiteAst.Comment (loc, _)) ->
289 let parsed_text, _, _, parsed_text_length = text_of_loc loc in
290 let remain_len = String.length unparsed_text - parsed_text_length in
291 let s = String.sub unparsed_text parsed_text_length remain_len in
294 eval_statement include_paths buffer guistuff
295 grafite_status user_goal script (`Raw s)
297 HExtlib.Localized (floc, exn) ->
298 HExtlib.raise_localized_exception
299 ~offset:(MatitaGtkMisc.utf8_string_length parsed_text) floc exn
300 | MultiPassDisambiguator.DisambiguationError (offset,errorll) ->
302 (MultiPassDisambiguator.DisambiguationError
303 (offset+parsed_text_length, errorll))
305 assert (text=""); (* no macros inside comments, please! *)
307 | (statuses,text)::tl ->
308 (statuses,parsed_text ^ text)::tl,"",parsed_text_length + len
311 let fresh_script_id =
315 class script ~(source_view: GSourceView2.source_view)
316 ~(mathviewer: MatitaTypes.mathViewer)
321 let buffer = source_view#buffer in
322 let source_buffer = source_view#source_buffer in
323 let initial_statuses current baseuri =
324 let empty_lstatus = new LexiconEngine.status in
327 LexiconSync.time_travel ~present:current ~past:empty_lstatus;
328 GrafiteSync.time_travel ~present:current ();
329 (* CSC: there is a known bug in invalidation; temporary fix here *)
330 NCicEnvironment.invalidate ()
333 CicNotation2.load_notation ~include_paths:[] empty_lstatus
334 BuildTimeConf.core_notation_script
336 let grafite_status = GrafiteSync.init lexicon_status baseuri in
339 let read_include_paths file =
341 let root, _buri, _fname, _tgt =
342 Librarian.baseuri_of_script ~include_paths:[] file
345 Str.split (Str.regexp " ")
346 (List.assoc "include_paths" (Librarian.load_root_file (root^"/root")))
348 List.iter (HLog.debug) rc; rc
349 with Librarian.NoRootFor _ | Not_found -> []
351 let default_buri = "cic:/matita/tests" in
352 let default_fname = ".unnamed.ma" in
354 val mutable include_paths_ = []
356 val scriptId = fresh_script_id ()
359 mathviewer = mathviewer;
360 urichooser = urichooser;
361 ask_confirmation = ask_confirmation;
364 val mutable filename_ = (None : string option)
366 method has_name = filename_ <> None
368 method include_paths =
370 Helm_registry.get_list Helm_registry.string "matita.includes"
372 method private curdir =
374 let root, _buri, _fname, _tgt =
375 Librarian.baseuri_of_script ~include_paths:self#include_paths
379 with Librarian.NoRootFor _ -> Sys.getcwd ()
381 method buri_of_current_file =
383 | None -> default_buri
386 let _root, buri, _fname, _tgt =
387 Librarian.baseuri_of_script ~include_paths:self#include_paths f
390 with Librarian.NoRootFor _ -> default_buri
392 method filename = match filename_ with None -> default_fname | Some f -> f
395 ignore (GMain.Timeout.add ~ms:300000
396 ~callback:(fun _ -> self#_saveToBackupFile ();true));
397 ignore (buffer#connect#modified_changed
398 (fun _ -> set_star buffer#modified))
400 val mutable statements = [] (** executed statements *)
402 val mutable history = [ initial_statuses None default_buri ]
403 (** list of states before having executed statements. Head element of this
404 * list is the current state, last element is the state at the beginning of
406 * Invariant: this list length is 1 + length of statements *)
408 (** goal as seen by the user (i.e. metano corresponding to current tab) *)
409 val mutable userGoal = (None : int option)
411 (** text mark and tag representing locked part of a script *)
413 buffer#create_mark ~name:"locked" ~left_gravity:true buffer#start_iter
414 val beginning_of_statement_mark =
415 buffer#create_mark ~name:"beginning_of_statement"
416 ~left_gravity:true buffer#start_iter
417 val locked_tag = buffer#create_tag [`BACKGROUND "lightblue"; `EDITABLE false]
418 val error_tag = buffer#create_tag [`UNDERLINE `SINGLE; `FOREGROUND "red"]
420 method locked_mark = locked_mark
421 method locked_tag = locked_tag
422 method error_tag = error_tag
424 (* history can't be empty, the invariant above grant that it contains at
425 * least the init grafite_status *)
426 method grafite_status = match history with s::_ -> s | _ -> assert false
428 method private _advance ?statement () =
429 let s = match statement with Some s -> s | None -> self#getFuture in
430 if self#bos then LibraryClean.clean_baseuris [self#buri_of_current_file];
431 HLog.debug ("evaluating: " ^ first_line s ^ " ...");
432 let time1 = Unix.gettimeofday () in
433 let entries, newtext, parsed_len =
435 eval_statement self#include_paths buffer guistuff
436 self#grafite_status userGoal self (`Raw s)
437 with End_of_file -> raise Margin
439 let time2 = Unix.gettimeofday () in
440 HLog.debug ("... done in " ^ string_of_float (time2 -. time1) ^ "s");
441 let new_statuses, new_statements =
442 let statuses, texts = List.split entries in
445 history <- new_statuses @ history;
446 statements <- new_statements @ statements;
447 let start = buffer#get_iter_at_mark (`MARK locked_mark) in
448 let new_text = String.concat "" (List.rev new_statements) in
449 if statement <> None then
450 buffer#insert ~iter:start new_text
452 let parsed_text = String.sub s 0 parsed_len in
453 if new_text <> parsed_text then begin
454 let stop = start#copy#forward_chars (Glib.Utf8.length parsed_text) in
455 buffer#delete ~start ~stop;
456 buffer#insert ~iter:start new_text;
459 self#moveMark (Glib.Utf8.length new_text);
460 buffer#insert ~iter:(buffer#get_iter_at_mark (`MARK locked_mark)) newtext;
461 (* here we need to set the Goal in case we are going to cursor (or to
462 bottom) and we will face a macro *)
465 method private _retract offset grafite_status new_statements
468 let cur_grafite_status =
469 match history with s::_ -> s | [] -> assert false
471 LexiconSync.time_travel ~present:cur_grafite_status ~past:grafite_status;
472 GrafiteSync.time_travel ~present:cur_grafite_status ~past:grafite_status ();
473 statements <- new_statements;
474 history <- new_history;
475 self#moveMark (- offset)
477 method advance ?statement () =
479 self#_advance ?statement ();
482 | Margin -> self#notify
483 | Not_found -> assert false
484 | Invalid_argument "Array.make" -> HLog.error "The script is too big!\n"
485 | exc -> self#notify; raise exc
489 let cmp,new_statements,new_history,grafite_status =
490 match statements,history with
491 stat::statements, _::(status::_ as history) ->
492 assert (Glib.Utf8.validate stat);
493 Glib.Utf8.length stat, statements, history, status
494 | [],[_] -> raise Margin
495 | _,_ -> assert false
497 self#_retract cmp grafite_status new_statements
501 | Margin -> self#notify
502 | Invalid_argument "Array.make" -> HLog.error "The script is too big!\n"
503 | exc -> self#notify; raise exc
505 method private getFuture =
506 let lock = buffer#get_iter_at_mark (`MARK locked_mark) in
507 let text = buffer#get_text ~start:lock ~stop:buffer#end_iter () in
510 method expandAllVirtuals =
511 let lock = buffer#get_iter_at_mark (`MARK locked_mark) in
512 let text = buffer#get_text ~start:lock ~stop:buffer#end_iter () in
513 buffer#delete ~start:lock ~stop:buffer#end_iter;
514 let text = Pcre.replace ~pat:":=" ~templ:"\\def" text in
515 let text = Pcre.replace ~pat:"->" ~templ:"\\to" text in
516 let text = Pcre.replace ~pat:"=>" ~templ:"\\Rightarrow" text in
518 Pcre.substitute_substrings
520 let pristine = Pcre.get_substring str 0 in
522 if pristine.[0] = ' ' then
523 String.sub pristine 1 (String.length pristine -1)
527 if input.[String.length input-1] = ' ' then
528 String.sub input 0 (String.length input -1)
532 if input = "\\forall" ||
533 input = "\\lambda" ||
534 input = "\\exists" then "","" else " ", " "
537 before ^ Glib.Utf8.from_unichar
538 (snd (Virtuals.symbol_of_virtual input)) ^ after
539 with Virtuals.Not_a_virtual -> pristine)
540 ~pat:" ?\\\\[a-zA-Z]+ ?" text
542 buffer#insert ~iter:lock text
544 (** @param rel_offset relative offset from current position of locked_mark *)
545 method private moveMark rel_offset =
546 let mark = `MARK locked_mark in
547 let old_insert = buffer#get_iter_at_mark `INSERT in
548 buffer#remove_tag locked_tag ~start:buffer#start_iter ~stop:buffer#end_iter;
549 let current_mark_pos = buffer#get_iter_at_mark mark in
551 match rel_offset with
552 | 0 -> current_mark_pos
553 | n when n > 0 -> current_mark_pos#forward_chars n
554 | n (* when n < 0 *) -> current_mark_pos#backward_chars (abs n)
556 buffer#move_mark mark ~where:new_mark_pos;
557 buffer#apply_tag locked_tag ~start:buffer#start_iter ~stop:new_mark_pos;
558 buffer#move_mark `INSERT old_insert;
559 let mark_position = buffer#get_iter_at_mark mark in
560 if source_view#move_mark_onscreen mark then
562 buffer#move_mark mark mark_position;
563 source_view#scroll_to_mark ~use_align:true ~xalign:1.0 ~yalign:0.1 mark;
565 while Glib.Main.pending () do ignore(Glib.Main.iteration false); done
567 method clean_dirty_lock =
568 let lock_mark_iter = buffer#get_iter_at_mark (`MARK locked_mark) in
569 buffer#remove_tag locked_tag ~start:buffer#start_iter ~stop:buffer#end_iter;
570 buffer#apply_tag locked_tag ~start:buffer#start_iter ~stop:lock_mark_iter
572 val mutable observers = []
574 method addObserver (o: GrafiteTypes.status -> unit) =
575 observers <- o :: observers
577 method private notify =
578 let grafite_status = self#grafite_status in
579 List.iter (fun o -> o grafite_status) observers
581 method loadFromString s =
584 buffer#set_modified true
586 method loadFromFile f =
587 buffer#set_text (HExtlib.input_file f);
589 buffer#set_modified false
591 method assignFileName file =
594 | Some f -> Some (Librarian.absolutize f)
599 (match file with Some file -> read_include_paths file | None -> []);
601 Sys.chdir self#curdir;
602 HLog.debug ("Moving to " ^ Sys.getcwd ())
604 method saveToFile () =
605 if self#has_name then
606 let oc = open_out self#filename in
607 output_string oc (buffer#get_text ~start:buffer#start_iter
608 ~stop:buffer#end_iter ());
611 buffer#set_modified false
613 HLog.error "Can't save, no filename selected"
615 method private _saveToBackupFile () =
616 if buffer#modified then
618 let f = self#filename in
619 let oc = open_out f in
620 output_string oc (buffer#get_text ~start:buffer#start_iter
621 ~stop:buffer#end_iter ());
623 HLog.debug ("backup " ^ f ^ " saved")
626 method private reset_buffer =
628 history <- [ initial_statuses (Some self#grafite_status) self#buri_of_current_file ];
631 buffer#remove_tag locked_tag ~start:buffer#start_iter ~stop:buffer#end_iter;
632 buffer#move_mark (`MARK locked_mark) ~where:buffer#start_iter
636 source_buffer#begin_not_undoable_action ();
637 buffer#delete ~start:buffer#start_iter ~stop:buffer#end_iter;
638 source_buffer#end_not_undoable_action ();
639 buffer#set_modified false;
642 let template = HExtlib.input_file BuildTimeConf.script_template in
643 buffer#insert ~iter:(buffer#get_iter `START) template;
644 buffer#set_modified false;
647 method goto (pos: [`Top | `Bottom | `Cursor]) () =
649 let old_locked_mark =
651 (buffer#create_mark ~name:"old_locked_mark"
652 ~left_gravity:true (buffer#get_iter_at_mark (`MARK locked_mark))) in
653 let getpos _ = buffer#get_iter_at_mark (`MARK locked_mark) in
654 let getoldpos _ = buffer#get_iter_at_mark old_locked_mark in
655 let dispose_old_locked_mark () = buffer#delete_mark old_locked_mark in
658 dispose_old_locked_mark ();
665 let newpos = getpos () in
666 if (getoldpos ())#compare newpos < 0 then
668 buffer#move_mark old_locked_mark newpos;
673 dispose_old_locked_mark ();
676 | Margin -> dispose_old_locked_mark (); self#notify
677 | exc -> dispose_old_locked_mark (); self#notify; raise exc)
679 let locked_iter () = buffer#get_iter_at_mark (`NAME "locked") in
680 let cursor_iter () = buffer#get_iter_at_mark `INSERT in
683 (buffer#create_mark ~name:"initial_insert"
684 ~left_gravity:true (cursor_iter ())) in
685 let dispose_remember () = buffer#delete_mark remember in
686 let remember_iter () =
687 buffer#get_iter_at_mark (`NAME "initial_insert") in
688 let cmp () = (locked_iter ())#offset - (remember_iter ())#offset in
690 let forward_until_cursor () = (* go forward until locked > cursor *)
693 if cmp () < 0 && (getoldpos ())#compare (getpos ()) < 0
696 buffer#move_mark old_locked_mark (getpos ());
702 let rec back_until_cursor len = (* go backward until locked < cursor *)
704 statements, ((grafite_status)::_ as history)
706 self#_retract (icmp - len) grafite_status statements
708 | statement::tl1, _::tl2 ->
709 back_until_cursor (len - MatitaGtkMisc.utf8_string_length statement) (tl1,tl2)
710 | _,_ -> assert false
714 if icmp < 0 then (* locked < cursor *)
715 (forward_until_cursor (); self#notify)
716 else if icmp > 0 then (* locked > cursor *)
717 (back_until_cursor icmp (statements,history); self#notify)
718 else (* cursor = locked *)
722 dispose_old_locked_mark ();
724 | Margin -> dispose_remember (); dispose_old_locked_mark (); self#notify
725 | exc -> dispose_remember (); dispose_old_locked_mark ();
726 self#notify; raise exc)
727 with Invalid_argument "Array.make" ->
728 HLog.error "The script is too big!\n"
730 method stack = (assert false : Continuationals.Stack.t) (* MATITA 1.0 GrafiteTypes.get_stack
731 self#grafite_status *)
732 method setGoal n = userGoal <- n
733 method goal = userGoal
741 let rec is_there_only_comments lexicon_status s =
742 if Pcre.pmatch ~rex:only_dust_RE s then raise Margin;
743 let lexicon_status,st =
744 GrafiteParser.parse_statement (Ulexing.from_utf8_string s)
745 ~include_paths:self#include_paths lexicon_status
748 | GrafiteParser.LSome (GrafiteAst.Comment (loc,_)) ->
749 let _,parsed_text_length = MatitaGtkMisc.utf8_parsed_text s loc in
750 (* CSC: why +1 in the following lines ???? *)
751 let parsed_text_length = parsed_text_length + 1 in
752 let remain_len = String.length s - parsed_text_length in
753 let next = String.sub s parsed_text_length remain_len in
754 is_there_only_comments lexicon_status next
755 | GrafiteParser.LNone _
756 | GrafiteParser.LSome (GrafiteAst.Executable _) -> false
758 try is_there_only_comments self#grafite_status self#getFuture
760 | LexiconEngine.IncludedFileNotCompiled _
761 | HExtlib.Localized _
762 | CicNotationParser.Parse_error _ -> false
763 | Margin | End_of_file -> true
764 | Invalid_argument "Array.make" -> false
768 HLog.debug "script status:";
769 HLog.debug ("history size: " ^ string_of_int (List.length history));
770 HLog.debug (sprintf "%d statements:" (List.length statements));
771 List.iter HLog.debug statements;
772 HLog.debug ("Current file name: " ^ self#filename);
775 let _script = ref None
777 let script ~source_view ~mathviewer ~urichooser ~ask_confirmation ~set_star ()
780 ~source_view ~mathviewer ~ask_confirmation ~urichooser ~set_star ()
785 let current () = match !_script with None -> assert false | Some s -> s