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:NotationPp.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 NotationPt.Cast (t,NotationPt.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 | NotationPt.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
198 | TA.Hint (loc, rewrite) -> (* MATITA 1.0 *) assert false
199 | TA.Eval (_, kind, term) -> assert false (* MATITA 1.0
200 let metasenv = GrafiteTypes.get_proof_metasenv grafite_status in
204 | Some n -> GrafiteTypes.get_proof_context grafite_status n in
205 let ty,_ = CTC.type_of_aux' metasenv context term CicUniv.empty_ugraph in
209 CicReduction.normalize ~delta:true ~subst:[] context term
211 ProofEngineReduction.simpl context term
213 ProofEngineReduction.unfold ?what:None context term
214 | `Unfold (Some lazy_term) ->
216 lazy_term context metasenv CicUniv.empty_ugraph in
217 ProofEngineReduction.unfold ~what context term
219 CicReduction.whd ~delta:true ~subst:[] context term
221 let t_and_ty = Cic.Cast (term,ty) in
222 guistuff.mathviewer#show_entry (`Cic (t_and_ty,metasenv));
223 [(grafite_status#set_proof_status No_proof), parsed_text ],"",
224 parsed_text_length *)
226 and eval_executable include_paths (buffer : GText.buffer) guistuff
227 grafite_status user_goal unparsed_text skipped_txt nonskipped_txt
231 ignore (buffer#move_mark (`NAME "beginning_of_statement")
232 ~where:((buffer#get_iter_at_mark (`NAME "locked"))#forward_chars
233 (Glib.Utf8.length skipped_txt))) ;
234 eval_with_engine include_paths
235 guistuff grafite_status user_goal skipped_txt nonskipped_txt
236 (TA.Executable (loc, ex))
238 MatitaTypes.Cancel -> [], "", 0
239 | GrafiteEngine.Macro (_loc,lazy_macro) ->
241 let grafite_status,macro = lazy_macro context in
242 eval_macro include_paths buffer guistuff grafite_status
243 user_goal unparsed_text (skipped_txt ^ nonskipped_txt) script macro
244 | GrafiteEngine.NMacro (_loc,macro) ->
245 eval_nmacro include_paths buffer guistuff grafite_status
246 user_goal unparsed_text (skipped_txt ^ nonskipped_txt) script macro
249 and eval_statement include_paths (buffer : GText.buffer) guistuff
250 grafite_status user_goal script statement
252 let (grafite_status,st), unparsed_text =
255 if Pcre.pmatch ~rex:only_dust_RE text then raise Margin;
257 wrap_with_make include_paths
258 (GrafiteParser.parse_statement (Ulexing.from_utf8_string text))
262 | `Ast (st, text) -> (grafite_status, st), text
264 let text_of_loc floc =
265 let nonskipped_txt,_ = MatitaGtkMisc.utf8_parsed_text unparsed_text floc in
266 let start, stop = HExtlib.loc_of_floc floc in
267 let floc = HExtlib.floc_of_loc (0, start) in
268 let skipped_txt,_ = MatitaGtkMisc.utf8_parsed_text unparsed_text floc in
269 let floc = HExtlib.floc_of_loc (0, stop) in
270 let txt,len = MatitaGtkMisc.utf8_parsed_text unparsed_text floc in
271 txt,nonskipped_txt,skipped_txt,len
274 | GrafiteParser.LNone loc ->
275 let parsed_text, _, _, parsed_text_length = text_of_loc loc in
276 [grafite_status,parsed_text],"",
278 | GrafiteParser.LSome (GrafiteAst.Executable (loc, ex)) ->
279 let _, nonskipped, skipped, parsed_text_length = text_of_loc loc in
280 eval_executable include_paths buffer guistuff
281 grafite_status user_goal unparsed_text skipped nonskipped script ex loc
282 | GrafiteParser.LSome (GrafiteAst.Comment (loc, GrafiteAst.Code (_, ex)))
283 when Helm_registry.get_bool "matita.execcomments" ->
284 let _, nonskipped, skipped, parsed_text_length = text_of_loc loc in
285 eval_executable include_paths buffer guistuff
286 grafite_status user_goal unparsed_text skipped nonskipped script ex loc
287 | GrafiteParser.LSome (GrafiteAst.Comment (loc, _)) ->
288 let parsed_text, _, _, parsed_text_length = text_of_loc loc in
289 let remain_len = String.length unparsed_text - parsed_text_length in
290 let s = String.sub unparsed_text parsed_text_length remain_len in
293 eval_statement include_paths buffer guistuff
294 grafite_status user_goal script (`Raw s)
296 HExtlib.Localized (floc, exn) ->
297 HExtlib.raise_localized_exception
298 ~offset:(MatitaGtkMisc.utf8_string_length parsed_text) floc exn
299 | MultiPassDisambiguator.DisambiguationError (offset,errorll) ->
301 (MultiPassDisambiguator.DisambiguationError
302 (offset+parsed_text_length, errorll))
304 assert (text=""); (* no macros inside comments, please! *)
306 | (statuses,text)::tl ->
307 (statuses,parsed_text ^ text)::tl,"",parsed_text_length + len
310 let fresh_script_id =
314 class script ~(source_view: GSourceView2.source_view)
315 ~(mathviewer: MatitaTypes.mathViewer)
320 let buffer = source_view#buffer in
321 let source_buffer = source_view#source_buffer in
322 let initial_statuses current baseuri =
323 let empty_lstatus = new LexiconEngine.status in
326 LexiconSync.time_travel ~present:current ~past:empty_lstatus;
327 GrafiteSync.time_travel ~present:current ();
328 (* CSC: there is a known bug in invalidation; temporary fix here *)
329 NCicEnvironment.invalidate ()
332 CicNotation2.load_notation ~include_paths:[] empty_lstatus
333 BuildTimeConf.core_notation_script
335 let grafite_status = GrafiteSync.init lexicon_status baseuri in
338 let read_include_paths file =
340 let root, _buri, _fname, _tgt =
341 Librarian.baseuri_of_script ~include_paths:[] file
344 Str.split (Str.regexp " ")
345 (List.assoc "include_paths" (Librarian.load_root_file (root^"/root")))
347 List.iter (HLog.debug) rc; rc
348 with Librarian.NoRootFor _ | Not_found -> []
350 let default_buri = "cic:/matita/tests" in
351 let default_fname = ".unnamed.ma" in
353 val mutable include_paths_ = []
355 val scriptId = fresh_script_id ()
358 mathviewer = mathviewer;
359 urichooser = urichooser;
360 ask_confirmation = ask_confirmation;
363 val mutable filename_ = (None : string option)
365 method has_name = filename_ <> None
367 method include_paths =
369 Helm_registry.get_list Helm_registry.string "matita.includes"
371 method private curdir =
373 let root, _buri, _fname, _tgt =
374 Librarian.baseuri_of_script ~include_paths:self#include_paths
378 with Librarian.NoRootFor _ -> Sys.getcwd ()
380 method buri_of_current_file =
382 | None -> default_buri
385 let _root, buri, _fname, _tgt =
386 Librarian.baseuri_of_script ~include_paths:self#include_paths f
389 with Librarian.NoRootFor _ -> default_buri
391 method filename = match filename_ with None -> default_fname | Some f -> f
394 ignore (GMain.Timeout.add ~ms:300000
395 ~callback:(fun _ -> self#_saveToBackupFile ();true));
396 ignore (buffer#connect#modified_changed
397 (fun _ -> set_star buffer#modified))
399 val mutable statements = [] (** executed statements *)
401 val mutable history = [ initial_statuses None default_buri ]
402 (** list of states before having executed statements. Head element of this
403 * list is the current state, last element is the state at the beginning of
405 * Invariant: this list length is 1 + length of statements *)
407 (** goal as seen by the user (i.e. metano corresponding to current tab) *)
408 val mutable userGoal = (None : int option)
410 (** text mark and tag representing locked part of a script *)
412 buffer#create_mark ~name:"locked" ~left_gravity:true buffer#start_iter
413 val beginning_of_statement_mark =
414 buffer#create_mark ~name:"beginning_of_statement"
415 ~left_gravity:true buffer#start_iter
416 val locked_tag = buffer#create_tag [`BACKGROUND "lightblue"; `EDITABLE false]
417 val error_tag = buffer#create_tag [`UNDERLINE `SINGLE; `FOREGROUND "red"]
419 method locked_mark = locked_mark
420 method locked_tag = locked_tag
421 method error_tag = error_tag
423 (* history can't be empty, the invariant above grant that it contains at
424 * least the init grafite_status *)
425 method grafite_status = match history with s::_ -> s | _ -> assert false
427 method private _advance ?statement () =
428 let s = match statement with Some s -> s | None -> self#getFuture in
429 if self#bos then LibraryClean.clean_baseuris [self#buri_of_current_file];
430 HLog.debug ("evaluating: " ^ first_line s ^ " ...");
431 let time1 = Unix.gettimeofday () in
432 let entries, newtext, parsed_len =
434 eval_statement self#include_paths buffer guistuff
435 self#grafite_status userGoal self (`Raw s)
436 with End_of_file -> raise Margin
438 let time2 = Unix.gettimeofday () in
439 HLog.debug ("... done in " ^ string_of_float (time2 -. time1) ^ "s");
440 let new_statuses, new_statements =
441 let statuses, texts = List.split entries in
444 history <- new_statuses @ history;
445 statements <- new_statements @ statements;
446 let start = buffer#get_iter_at_mark (`MARK locked_mark) in
447 let new_text = String.concat "" (List.rev new_statements) in
448 if statement <> None then
449 buffer#insert ~iter:start new_text
451 let parsed_text = String.sub s 0 parsed_len in
452 if new_text <> parsed_text then begin
453 let stop = start#copy#forward_chars (Glib.Utf8.length parsed_text) in
454 buffer#delete ~start ~stop;
455 buffer#insert ~iter:start new_text;
458 self#moveMark (Glib.Utf8.length new_text);
459 buffer#insert ~iter:(buffer#get_iter_at_mark (`MARK locked_mark)) newtext;
460 (* here we need to set the Goal in case we are going to cursor (or to
461 bottom) and we will face a macro *)
464 method private _retract offset grafite_status new_statements
467 let cur_grafite_status =
468 match history with s::_ -> s | [] -> assert false
470 LexiconSync.time_travel ~present:cur_grafite_status ~past:grafite_status;
471 GrafiteSync.time_travel ~present:cur_grafite_status ~past:grafite_status ();
472 statements <- new_statements;
473 history <- new_history;
474 self#moveMark (- offset)
476 method advance ?statement () =
478 self#_advance ?statement ();
481 | Margin -> self#notify
482 | Not_found -> assert false
483 | Invalid_argument "Array.make" -> HLog.error "The script is too big!\n"
484 | exc -> self#notify; raise exc
488 let cmp,new_statements,new_history,grafite_status =
489 match statements,history with
490 stat::statements, _::(status::_ as history) ->
491 assert (Glib.Utf8.validate stat);
492 Glib.Utf8.length stat, statements, history, status
493 | [],[_] -> raise Margin
494 | _,_ -> assert false
496 self#_retract cmp grafite_status new_statements
500 | Margin -> self#notify
501 | Invalid_argument "Array.make" -> HLog.error "The script is too big!\n"
502 | exc -> self#notify; raise exc
504 method private getFuture =
505 let lock = buffer#get_iter_at_mark (`MARK locked_mark) in
506 let text = buffer#get_text ~start:lock ~stop:buffer#end_iter () in
509 method expandAllVirtuals =
510 let lock = buffer#get_iter_at_mark (`MARK locked_mark) in
511 let text = buffer#get_text ~start:lock ~stop:buffer#end_iter () in
512 buffer#delete ~start:lock ~stop:buffer#end_iter;
513 let text = Pcre.replace ~pat:":=" ~templ:"\\def" text in
514 let text = Pcre.replace ~pat:"->" ~templ:"\\to" text in
515 let text = Pcre.replace ~pat:"=>" ~templ:"\\Rightarrow" text in
517 Pcre.substitute_substrings
519 let pristine = Pcre.get_substring str 0 in
521 if pristine.[0] = ' ' then
522 String.sub pristine 1 (String.length pristine -1)
526 if input.[String.length input-1] = ' ' then
527 String.sub input 0 (String.length input -1)
531 if input = "\\forall" ||
532 input = "\\lambda" ||
533 input = "\\exists" then "","" else " ", " "
536 before ^ Glib.Utf8.from_unichar
537 (snd (Virtuals.symbol_of_virtual input)) ^ after
538 with Virtuals.Not_a_virtual -> pristine)
539 ~pat:" ?\\\\[a-zA-Z]+ ?" text
541 buffer#insert ~iter:lock text
543 (** @param rel_offset relative offset from current position of locked_mark *)
544 method private moveMark rel_offset =
545 let mark = `MARK locked_mark in
546 let old_insert = buffer#get_iter_at_mark `INSERT in
547 buffer#remove_tag locked_tag ~start:buffer#start_iter ~stop:buffer#end_iter;
548 let current_mark_pos = buffer#get_iter_at_mark mark in
550 match rel_offset with
551 | 0 -> current_mark_pos
552 | n when n > 0 -> current_mark_pos#forward_chars n
553 | n (* when n < 0 *) -> current_mark_pos#backward_chars (abs n)
555 buffer#move_mark mark ~where:new_mark_pos;
556 buffer#apply_tag locked_tag ~start:buffer#start_iter ~stop:new_mark_pos;
557 buffer#move_mark `INSERT old_insert;
558 let mark_position = buffer#get_iter_at_mark mark in
559 if source_view#move_mark_onscreen mark then
561 buffer#move_mark mark mark_position;
562 source_view#scroll_to_mark ~use_align:true ~xalign:1.0 ~yalign:0.1 mark;
564 while Glib.Main.pending () do ignore(Glib.Main.iteration false); done
566 method clean_dirty_lock =
567 let lock_mark_iter = buffer#get_iter_at_mark (`MARK locked_mark) in
568 buffer#remove_tag locked_tag ~start:buffer#start_iter ~stop:buffer#end_iter;
569 buffer#apply_tag locked_tag ~start:buffer#start_iter ~stop:lock_mark_iter
571 val mutable observers = []
573 method addObserver (o: GrafiteTypes.status -> unit) =
574 observers <- o :: observers
576 method private notify =
577 let grafite_status = self#grafite_status in
578 List.iter (fun o -> o grafite_status) observers
580 method loadFromString s =
583 buffer#set_modified true
585 method loadFromFile f =
586 buffer#set_text (HExtlib.input_file f);
588 buffer#set_modified false
590 method assignFileName file =
593 | Some f -> Some (Librarian.absolutize f)
598 (match file with Some file -> read_include_paths file | None -> []);
600 Sys.chdir self#curdir;
601 HLog.debug ("Moving to " ^ Sys.getcwd ())
603 method saveToFile () =
604 if self#has_name then
605 let oc = open_out self#filename in
606 output_string oc (buffer#get_text ~start:buffer#start_iter
607 ~stop:buffer#end_iter ());
610 buffer#set_modified false
612 HLog.error "Can't save, no filename selected"
614 method private _saveToBackupFile () =
615 if buffer#modified then
617 let f = self#filename in
618 let oc = open_out f in
619 output_string oc (buffer#get_text ~start:buffer#start_iter
620 ~stop:buffer#end_iter ());
622 HLog.debug ("backup " ^ f ^ " saved")
625 method private reset_buffer =
627 history <- [ initial_statuses (Some self#grafite_status) self#buri_of_current_file ];
630 buffer#remove_tag locked_tag ~start:buffer#start_iter ~stop:buffer#end_iter;
631 buffer#move_mark (`MARK locked_mark) ~where:buffer#start_iter
635 source_buffer#begin_not_undoable_action ();
636 buffer#delete ~start:buffer#start_iter ~stop:buffer#end_iter;
637 source_buffer#end_not_undoable_action ();
638 buffer#set_modified false;
641 let template = HExtlib.input_file BuildTimeConf.script_template in
642 buffer#insert ~iter:(buffer#get_iter `START) template;
643 buffer#set_modified false;
646 method goto (pos: [`Top | `Bottom | `Cursor]) () =
648 let old_locked_mark =
650 (buffer#create_mark ~name:"old_locked_mark"
651 ~left_gravity:true (buffer#get_iter_at_mark (`MARK locked_mark))) in
652 let getpos _ = buffer#get_iter_at_mark (`MARK locked_mark) in
653 let getoldpos _ = buffer#get_iter_at_mark old_locked_mark in
654 let dispose_old_locked_mark () = buffer#delete_mark old_locked_mark in
657 dispose_old_locked_mark ();
664 let newpos = getpos () in
665 if (getoldpos ())#compare newpos < 0 then
667 buffer#move_mark old_locked_mark newpos;
672 dispose_old_locked_mark ();
675 | Margin -> dispose_old_locked_mark (); self#notify
676 | exc -> dispose_old_locked_mark (); self#notify; raise exc)
678 let locked_iter () = buffer#get_iter_at_mark (`NAME "locked") in
679 let cursor_iter () = buffer#get_iter_at_mark `INSERT in
682 (buffer#create_mark ~name:"initial_insert"
683 ~left_gravity:true (cursor_iter ())) in
684 let dispose_remember () = buffer#delete_mark remember in
685 let remember_iter () =
686 buffer#get_iter_at_mark (`NAME "initial_insert") in
687 let cmp () = (locked_iter ())#offset - (remember_iter ())#offset in
689 let forward_until_cursor () = (* go forward until locked > cursor *)
692 if cmp () < 0 && (getoldpos ())#compare (getpos ()) < 0
695 buffer#move_mark old_locked_mark (getpos ());
701 let rec back_until_cursor len = (* go backward until locked < cursor *)
703 statements, ((grafite_status)::_ as history)
705 self#_retract (icmp - len) grafite_status statements
707 | statement::tl1, _::tl2 ->
708 back_until_cursor (len - MatitaGtkMisc.utf8_string_length statement) (tl1,tl2)
709 | _,_ -> assert false
713 if icmp < 0 then (* locked < cursor *)
714 (forward_until_cursor (); self#notify)
715 else if icmp > 0 then (* locked > cursor *)
716 (back_until_cursor icmp (statements,history); self#notify)
717 else (* cursor = locked *)
721 dispose_old_locked_mark ();
723 | Margin -> dispose_remember (); dispose_old_locked_mark (); self#notify
724 | exc -> dispose_remember (); dispose_old_locked_mark ();
725 self#notify; raise exc)
726 with Invalid_argument "Array.make" ->
727 HLog.error "The script is too big!\n"
729 method stack = (assert false : Continuationals.Stack.t) (* MATITA 1.0 GrafiteTypes.get_stack
730 self#grafite_status *)
731 method setGoal n = userGoal <- n
732 method goal = userGoal
740 let rec is_there_only_comments lexicon_status s =
741 if Pcre.pmatch ~rex:only_dust_RE s then raise Margin;
742 let lexicon_status,st =
743 GrafiteParser.parse_statement (Ulexing.from_utf8_string s)
744 ~include_paths:self#include_paths lexicon_status
747 | GrafiteParser.LSome (GrafiteAst.Comment (loc,_)) ->
748 let _,parsed_text_length = MatitaGtkMisc.utf8_parsed_text s loc in
749 (* CSC: why +1 in the following lines ???? *)
750 let parsed_text_length = parsed_text_length + 1 in
751 let remain_len = String.length s - parsed_text_length in
752 let next = String.sub s parsed_text_length remain_len in
753 is_there_only_comments lexicon_status next
754 | GrafiteParser.LNone _
755 | GrafiteParser.LSome (GrafiteAst.Executable _) -> false
757 try is_there_only_comments self#grafite_status self#getFuture
759 | LexiconEngine.IncludedFileNotCompiled _
760 | HExtlib.Localized _
761 | CicNotationParser.Parse_error _ -> false
762 | Margin | End_of_file -> true
763 | Invalid_argument "Array.make" -> false
767 HLog.debug "script status:";
768 HLog.debug ("history size: " ^ string_of_int (List.length history));
769 HLog.debug (sprintf "%d statements:" (List.length statements));
770 List.iter HLog.debug statements;
771 HLog.debug ("Current file name: " ^ self#filename);
774 let _script = ref None
776 let script ~source_view ~mathviewer ~urichooser ~ask_confirmation ~set_star ()
779 ~source_view ~mathviewer ~ask_confirmation ~urichooser ~set_star ()
784 let current () = match !_script with None -> assert false | Some s -> s