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.
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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/
26 (** Interpreter for textual phrases coming from matita's console (textual entry
27 * window at the bottom of the main window).
29 * Interpreter is either in Command state or in Proof state (see state type
30 * below). In Command state commands for starting proofs are accepted, but
31 * tactic and tactical applications are not. In Proof state both
32 * tactic/tacticals and commands are accepted.
39 type state = Command | Proof
40 type outcome = New_state of state | Quiet | Echo of string
42 exception Command_error of string
46 UriManager.uri_of_string (sprintf "%s/%s" BuildTimeConf.base_uri name)
49 let baseuri = lazy (ref ("cic:/matita/" ^ Helm_registry.get "matita.owner"))
50 let basedir = lazy (ref (Helm_registry.get "matita.basedir"))
53 let baseuri = !(Lazy.force baseuri) in
54 if baseuri.[String.length baseuri - 1] = '/' then
57 String.concat "/" [baseuri; name]
58 let split_obj = function
59 | Cic.Constant (name, body, ty, _, attrs)
60 | Cic.Variable (name, body, ty, _, attrs) -> (name, body, ty, attrs)
63 class virtual interpreterState =
64 (* static values, shared by all states inheriting this class *)
66 let last_item = ref None in
67 let evalAstCallback = ref None in
68 fun ~(console: #MatitaTypes.console) ->
71 val dbd = MatitaMisc.dbd_instance ()
72 val currentProof = MatitaProof.instance ()
73 val disambiguator = MatitaDisambiguator.instance ()
75 (** eval a toplevel phrase in the current state and return the new state
77 method parsePhrase s =
78 match disambiguator#parserr#parseTactical s with
79 | (TacticAst.LocatedTactical (loc', tac)) as tactical ->
84 method virtual evalTactical:
85 (CicAst.term, string) TacticAst.tactical -> outcome
87 method private _evalTactical ast =
88 self#setLastItem None;
89 let res = self#evalTactical ast in
90 (match !evalAstCallback with Some f -> f ast | None -> ());
94 debug_print (sprintf "evaluating '%s'" s);
95 self#_evalTactical (self#parsePhrase (Stream.of_string s))
97 method evalAst ast = self#_evalTactical ast
101 | Some (start_pos, end_pos) -> end_pos.Lexing.pos_cnum
102 | None -> failwith "MatitaInterpreter: no offset recorded"
104 method lastItem: script_item option = !last_item
105 method private setLastItem item = last_item := item
107 method setEvalAstCallback f = evalAstCallback := Some f
111 (** Implements phrases that should be accepted in all states *)
113 ~(console: #MatitaTypes.console)
114 ?(mathViewer: MatitaTypes.mathViewer option)
118 inherit interpreterState ~console
119 method evalTactical = function
120 | TacticAst.Command TacticAst.Quit ->
121 currentProof#quit ();
122 assert false (* dummy answer, useless *)
123 | TacticAst.Command TacticAst.Proof ->
124 (* do nothing, just for compatibility with coq syntax *)
126 | TacticAst.Command (TacticAst.Baseuri (Some uri)) ->
127 Lazy.force baseuri := uri;
128 console#echo_message (sprintf "base uri set to \"%s\"" uri);
130 | TacticAst.Command (TacticAst.Baseuri None) ->
131 console#echo_message (sprintf "base uri is \"%s\""
132 !(Lazy.force baseuri));
134 | TacticAst.Command (TacticAst.Basedir (Some path)) ->
135 Lazy.force basedir := path;
136 console#echo_message (sprintf "base dir set to \"%s\"" path);
138 | TacticAst.Command (TacticAst.Basedir None) ->
139 console#echo_message (sprintf "base dir is \"%s\""
140 !(Lazy.force basedir));
142 | TacticAst.Command (TacticAst.Check term) ->
143 let (_, _, term,ugraph) =
144 MatitaCicMisc.disambiguate ~disambiguator ~currentProof term
146 let (context, metasenv) =
147 MatitaCicMisc.get_context_and_metasenv currentProof
149 (* this is the Eval Compute
150 let term = CicReduction.whd context term in
152 let dummyno = CicMkImplicit.new_meta metasenv [] in
154 CicTypeChecker.type_of_aux' metasenv context term ugraph
156 (* TASSI: here ugraph1 is unused.... FIXME *)
157 let expr = Cic.Cast (term, ty) in
158 (match mathViewer with
159 | Some v -> v#checkTerm (`Cic expr)
162 | TacticAst.Command (TacticAst.Search_pat (search_kind, pat)) ->
164 match search_kind with
165 | `Locate -> MetadataQuery.locate ~dbd pat
166 | `Elim -> MetadataQuery.elim ~dbd pat
169 (* TODO ZACK: show URIs to the user *)
171 | TacticAst.Command (TacticAst.Print `Env) ->
172 let uris = CicEnvironment.list_uri () in
173 console#echo_message "Environment:";
175 console#echo_message (" " ^ (UriManager.string_of_uri u))
178 | TacticAst.Command (TacticAst.Print `Coer) ->
179 let uris = CoercGraph.get_coercions_list () in
180 console#echo_message "Coercions:";
181 List.iter (fun (s,t,u) ->
182 console#echo_message (" " ^ (UriManager.string_of_uri u))
186 raise (Command_error (TacticAstPp.pp_tactical tactical))
191 let pp_indtypes indTypes =
193 (fun (name, _, typ, constructors) ->
194 printf "%s: %s\n" name (CicPp.ppterm typ);
196 (fun (name, term) -> printf "\t%s: %s\n" name (CicPp.ppterm term))
201 let inddef_of_ast params indTypes (disambiguator:MatitaTypes.disambiguator) =
202 let add_pi binders t =
204 (fun (name, ast) acc ->
205 CicAst.Binder (`Forall, (Cic.Name name, Some ast), acc))
209 List.map (fun (name, _, typ, _) -> (name, add_pi params typ)) indTypes
211 let binders = ind_binders @ params in
213 let add_ast ast = asts := ast :: !asts in
214 let paramsno = List.length params in
215 let indbindersno = List.length ind_binders in
217 (fun (name, _, typ, constructors) ->
218 add_ast (add_pi params typ);
219 List.iter (fun (_, ast) -> add_ast (add_pi binders ast)) constructors)
221 let (_, metasenv, terms, ugraph) =
222 disambiguator#disambiguateTermAsts ~metasenv:[] !asts
224 let terms = ref (List.rev terms) in
226 match !terms with [] -> assert false | hd :: tl -> terms := tl; hd
230 | (name, _, _, _) :: _ -> qualify name ^ ".ind"
234 let counter = ref 0 in
238 CicUtil.term_of_uri (sprintf "%s#xpointer(1/%d)" uri !counter))
241 let subst_mutinds = List.fold_right CicSubstitution.subst mutinds in
244 (fun acc (name, inductive, typ, constructors) ->
245 let cicTyp = get_term () in
246 let cicConstructors =
248 (fun acc (name, _) ->
250 subst_mutinds (CicUtil.strip_prods indbindersno (get_term ()))
255 (name, inductive, cicTyp, List.rev cicConstructors) :: acc)
258 let cicIndTypes = List.rev cicIndTypes in
259 (UriManager.uri_of_string uri, (cicIndTypes, [], paramsno))
261 let save_object_to_disk uri obj =
262 let ensure_path_exists path =
263 let dir = Filename.dirname path in
265 let stats = Unix.stat dir in
266 if stats.Unix.st_kind <> Unix.S_DIR then
267 raise (Failure (dir ^ " already exists and is not a directory"))
271 Unix.Unix_error (_,_,_) ->
272 let pstatus = Unix.system ("mkdir -p " ^ dir) in
274 | Unix.WEXITED n when n = 0 -> ()
275 | _ -> raise (Failure ("Unable to create " ^ dir))
277 (* generate annobj, ids_to_inner_sorts and ids_to_inner_types *)
278 let annobj,_,_,ids_to_inner_sorts,ids_to_inner_types,_,_ =
279 Cic2acic.acic_object_of_cic_object ~eta_fix:false obj
283 Cic2Xml.print_object uri ~ids_to_inner_sorts ~ask_dtd_to_the_getter:false
287 Cic2Xml.print_inner_types uri ~ids_to_inner_sorts ~ids_to_inner_types
288 ~ask_dtd_to_the_getter:false
290 (* prepare URIs and paths *)
291 let innertypesuri = UriManager.innertypesuri_of_uri uri in
292 let bodyuri = UriManager.bodyuri_of_uri uri in
293 let innertypesfilename = Str.replace_first (Str.regexp "^cic:") ""
294 (UriManager.string_of_uri innertypesuri) ^ ".xml.gz" in
295 let innertypespath = !(Lazy.force basedir) ^ "/" ^ innertypesfilename in
296 let xmlfilename = Str.replace_first (Str.regexp "^cic:/") ""
297 (UriManager.string_of_uri uri) ^ ".xml.gz" in
298 let xmlpath = !(Lazy.force basedir) ^ "/" ^ xmlfilename in
299 let xmlbodyfilename = Str.replace_first (Str.regexp "^cic:/") ""
300 (UriManager.string_of_uri uri) ^ ".body.xml.gz" in
301 let xmlbodypath = !(Lazy.force basedir) ^ "/" ^ xmlbodyfilename in
302 let path_scheme_of path = "file://" ^ path in
303 MatitaMisc.mkdirs (List.map Filename.dirname [innertypespath; xmlpath]);
304 (* now write to disk *)
305 ensure_path_exists innertypespath;
306 Xml.pp ~gzip:true xmlinnertypes (Some innertypespath) ;
307 ensure_path_exists xmlpath;
308 Xml.pp ~gzip:true xml (Some xmlpath) ;
310 (* now register to the getter *)
311 Http_getter.register' innertypesuri (path_scheme_of innertypespath);
312 Http_getter.register' uri (path_scheme_of xmlpath);
313 (* now the optional body, both write and register *)
314 (match bodyxml,bodyuri with
316 | Some bodyxml,Some bodyuri->
317 ensure_path_exists xmlbodypath;
318 Xml.pp ~gzip:true bodyxml (Some xmlbodypath) ;
319 Http_getter.register' bodyuri (path_scheme_of xmlbodypath)
322 (* TODO ZACK a lot more to be done here:
323 * - save universe file *)
324 let add_constant_to_world ~(console: #MatitaTypes.console)
325 ~dbd ~uri ?body ~ty ?(params = []) ?(attrs = []) ~ugraph ()
327 let suri = UriManager.string_of_uri uri in
328 if CicEnvironment.in_library uri then
329 error (sprintf "%s constant already defined" suri)
331 let name = UriManager.name_of_uri uri in
332 let obj = Cic.Constant (name, body, ty, params, attrs) in
333 let ugraph = CicUnivUtils.clean_and_fill uri obj ugraph in
334 CicEnvironment.add_type_checked_term uri (obj, ugraph);
335 MetadataDb.index_constant ~dbd ~uri ~body ~ty;
336 save_object_to_disk uri obj;
337 console#echo_message (sprintf "%s constant defined" suri)
340 let add_inductive_def_to_world ~(console: #MatitaTypes.console)
341 ~dbd ~uri ~indTypes ?(params = []) ?(leftno = 0) ?(attrs = []) ~ugraph ()
343 let suri = UriManager.string_of_uri uri in
344 if CicEnvironment.in_library uri then
345 error (sprintf "%s inductive type already defined" suri)
347 let name = UriManager.name_of_uri uri in
348 let obj = Cic.InductiveDefinition (indTypes, params, leftno, attrs) in
349 let ugraph = CicUnivUtils.clean_and_fill uri obj ugraph in
350 CicEnvironment.put_inductive_definition uri (obj, ugraph);
351 MetadataDb.index_inductive_def ~dbd ~uri ~types:indTypes;
352 save_object_to_disk uri obj;
353 console#echo_message (sprintf "%s inductive type defined" suri);
356 let obj = CicElim.elim_of ~sort uri 0 in
357 let (name, body, ty, attrs) = split_obj obj in
358 let suri = qualify name ^ ".con" in
359 let uri = UriManager.uri_of_string suri in
360 (* TODO Zack: make CicElim returns a universe *)
361 let ugraph = CicUniv.empty_ugraph in
362 add_constant_to_world ~console ~dbd ~uri ?body ~ty ~attrs ~ugraph ();
365 (sprintf "%s eliminator (automatically) defined" suri)
367 with CicElim.Can_t_eliminate -> ()
369 List.iter elim [ Cic.Prop; Cic.Set; (Cic.Type (CicUniv.fresh ())) ];
372 (** Implements phrases that should be accepted only in Command state *)
373 class commandState ~(console: #MatitaTypes.console) ?mathViewer () =
374 let shared = new sharedState ~console ?mathViewer () in
376 inherit interpreterState ~console
378 method evalTactical = function
379 | TacticAst.LocatedTactical (_, tactical) -> self#evalTactical tactical
380 | TacticAst.Command (TacticAst.Theorem (_, Some name, ast, None)) ->
381 let (_, metasenv, expr,ugraph) =
382 disambiguator#disambiguateTermAst ast
384 let uri = UriManager.uri_of_string (qualify name ^ ".con") in
385 let proof = MatitaProof.proof ~typ:expr ~uri ~metasenv () in
386 currentProof#start proof;
387 self#setLastItem (Some `Theorem);
390 (TacticAst.Theorem (_, Some name, type_ast, Some body_ast)) ->
391 let (_, metasenv, type_cic, ugraph) =
392 disambiguator#disambiguateTermAst type_ast
394 let (_, metasenv, body_cic, ugraph) =
395 disambiguator#disambiguateTermAst ~metasenv body_ast
397 let (body_type, ugraph) =
398 CicTypeChecker.type_of_aux' metasenv [] body_cic ugraph
400 let uri = UriManager.uri_of_string (qualify name ^ ".con") in
401 let (subst, metasenv, ugraph) =
402 CicUnification.fo_unif metasenv [] body_type type_cic ugraph
404 let body = CicMetaSubst.apply_subst subst body_cic in
405 let ty = CicMetaSubst.apply_subst subst type_cic in
406 add_constant_to_world ~console ~dbd ~uri ~body ~ty ~ugraph ();
407 self#setLastItem (Some (`Def uri));
409 | TacticAst.Command (TacticAst.Inductive (params, indTypes)) ->
411 let (uri, (indTypes, params, leftno)) =
412 inddef_of_ast params indTypes disambiguator
414 let obj = Cic.InductiveDefinition (indTypes, params, leftno, []) in
416 CicTypeChecker.typecheck_mutual_inductive_defs uri
417 (indTypes, params, leftno) CicUniv.empty_ugraph
419 add_inductive_def_to_world ~console
420 ~dbd ~uri ~indTypes ~params ~leftno ~ugraph ();
421 self#setLastItem (Some (`Inductive uri));
423 | TacticAst.Command TacticAst.Quit ->
424 currentProof#quit ();
425 New_state Command (* dummy answer, useless *)
426 | TacticAst.Command TacticAst.Proof ->
427 (* do nothing, just for compatibility with coq syntax *)
429 | TacticAst.Command (TacticAst.Coercion c_ast) ->
430 let env, metasenv, coercion, ugraph =
431 disambiguator#disambiguateTermAst c_ast
433 let coer_uri,coer_ty =
438 CicEnvironment.get_obj CicUniv.empty_ugraph uri
441 | Cic.Constant (_,_,ty,_,_)
442 | Cic.Variable (_,_,ty,_,_) ->
445 | Cic.MutConstruct (uri,t,c,_) ->
447 CicEnvironment.get_obj CicUniv.empty_ugraph uri
450 | Cic.InductiveDefinition (l,_,_,_) ->
451 let (_,_,_,cl) = List.nth l t in
452 let (_,cty) = List.nth cl c in
457 (* we have to get the source and the tgt type uri
458 * in Coq syntax we have already their names, but
459 * since we don't support Funclass and similar I think
460 * all the coercion should be of the form
462 * So we should be able to extract them from the coercion type
464 let extract_last_two_p ty =
465 let rec aux = function
466 | Cic.Prod( _, src, Cic.Prod (n,t1,t2)) -> aux (Cic.Prod(n,t1,t2))
467 | Cic.Prod( _, src, tgt) -> src, tgt
472 let rec uri_of_term = function
473 | Cic.Const(u,_) -> u
474 | Cic.MutInd (u, i , _) ->
475 (* we have to build by hand the #xpointer *)
476 let base = UriManager.string_of_uri u in
477 let xp = "#xpointer(1/" ^ (string_of_int (i+1)) ^ ")" in
478 UriManager.uri_of_string (base ^ xp)
479 | Cic.Appl (he::_) -> uri_of_term he
481 error ("can't extract uri from " ^ (CicPp.ppterm t));
484 let ty_src,ty_tgt = extract_last_two_p coer_ty in
485 let src_uri = uri_of_term ty_src in
486 let tgt_uri = uri_of_term ty_tgt in
487 let coercions_to_add =
488 CoercGraph.close_coercion_graph src_uri tgt_uri coer_uri
490 (* FIXME: we should chek it this object can be a coercion
491 * maybe add the check to extract_last_two_p
493 console#echo_message (sprintf "Coercion %s"
494 (UriManager.string_of_uri coer_uri));
495 List.iter (fun (uri,obj,ugraph) ->
498 (sprintf "Coercion (automatic) %s"
499 (UriManager.string_of_uri uri));
501 let (name, body, ty, attrs) = split_obj obj in
502 add_constant_to_world ~console
503 ~dbd ~uri ?body ~ty ~attrs ~ugraph ();
506 | tactical -> shared#evalTactical tactical
509 (** create a ProofEngineTypes.mk_fresh_name_type function which uses given
510 * names as long as they are available, then it fallbacks to name generation
511 * using FreshNamesGenerator module *)
513 let len = List.length names in
515 fun metasenv context name ~typ ->
516 if !count < len then begin
517 let name = Cic.Name (List.nth names !count) in
521 FreshNamesGenerator.mk_fresh_name ~subst:[] metasenv context name ~typ
523 (** Implements phrases that should be accepted only in Proof state, basically
525 class proofState ~(console: #MatitaTypes.console) ?mathViewer () =
526 let shared = new sharedState ~console ?mathViewer () in
528 inherit interpreterState ~console
530 method private disambiguate ast =
531 let (_, _, term, _) =
532 MatitaCicMisc.disambiguate ~disambiguator ~currentProof ast
536 (** tactic AST -> ProofEngineTypes.tactic *)
537 method private lookup_tactic = function
538 | TacticAst.LocatedTactic (_, tactic) -> self#lookup_tactic tactic
539 | TacticAst.Intros (_, names) -> (* TODO Zack implement intros length *)
540 PrimitiveTactics.intros_tac ~mk_fresh_name_callback:(namer_of names)
542 | TacticAst.Reflexivity -> Tactics.reflexivity
543 | TacticAst.Assumption -> Tactics.assumption
544 | TacticAst.Contradiction -> Tactics.contradiction
545 | TacticAst.Exists -> Tactics.exists
546 | TacticAst.Fourier -> Tactics.fourier
547 | TacticAst.Left -> Tactics.left
548 | TacticAst.Right -> Tactics.right
549 | TacticAst.Ring -> Tactics.ring
550 | TacticAst.Split -> Tactics.split
551 | TacticAst.Symmetry -> Tactics.symmetry
552 | TacticAst.Transitivity term ->
553 Tactics.transitivity (self#disambiguate term)
554 | TacticAst.Apply term -> Tactics.apply (self#disambiguate term)
555 | TacticAst.Absurd term -> Tactics.absurd (self#disambiguate term)
556 | TacticAst.Exact term -> Tactics.exact (self#disambiguate term)
557 | TacticAst.Cut term -> Tactics.cut (self#disambiguate term)
558 | TacticAst.Elim (term, _) -> (* TODO Zack implement "using" argument *)
559 Tactics.elim_intros_simpl (self#disambiguate term)
560 | TacticAst.ElimType term -> Tactics.elim_type (self#disambiguate term)
561 | TacticAst.Replace (what, with_what) ->
562 Tactics.replace ~what:(self#disambiguate what)
563 ~with_what:(self#disambiguate with_what)
564 | TacticAst.Auto -> Tactics.auto_new ~dbd
565 | TacticAst.Change (what, with_what, _) ->
566 let what = self#disambiguate what in
567 let with_what = self#disambiguate with_what in
568 Tactics.change ~what ~with_what
570 (* TODO Zack a lot more of tactics to be implemented here ... *)
571 | TacticAst.Change_pattern of 'term pattern * 'term * 'ident option
572 | TacticAst.Change of 'term * 'term * 'ident option
573 | TacticAst.Decompose of 'ident * 'ident list
574 | TacticAst.Discriminate of 'ident
575 | TacticAst.Fold of reduction_kind * 'term
576 | TacticAst.Injection of 'ident
577 | TacticAst.LetIn of 'term * 'ident
578 | TacticAst.Reduce of reduction_kind * 'term pattern * 'ident option
579 | TacticAst.Replace_pattern of 'term pattern * 'term
580 | TacticAst.Rewrite of direction * 'term * 'ident option
582 | _ -> MatitaTypes.not_implemented "some tactic"
584 method evalTactical = function
585 | TacticAst.LocatedTactical (_, tactical) -> self#evalTactical tactical
586 | TacticAst.Command TacticAst.Abort ->
587 currentProof#abort ();
589 | TacticAst.Command (TacticAst.Undo steps) ->
590 currentProof#proof#undo ?steps ();
592 | TacticAst.Command (TacticAst.Redo steps) ->
593 currentProof#proof#redo ?steps ();
595 | TacticAst.Command (TacticAst.Qed None) ->
596 if not (currentProof#onGoing ()) then assert false;
597 let proof = currentProof#proof in
598 let (uri, metasenv, bo, ty) = proof#proof in
599 let uri = MatitaTypes.unopt_uri uri in
600 let suri = UriManager.string_of_uri uri in
601 (* TODO Zack this function probably should not simply fail with
602 * Failure, but rather raise some more meaningful exception *)
603 if metasenv <> [] then failwith "Proof not completed";
604 let proved_ty,ugraph =
605 CicTypeChecker.type_of_aux' [] [] bo CicUniv.empty_ugraph
608 CicReduction.are_convertible [] proved_ty ty ugraph
610 if not b then failwith "Wrong proof";
611 add_constant_to_world ~console ~dbd ~uri ~body:bo ~ty ~ugraph ();
612 currentProof#abort ();
613 console#echo_message (sprintf "%s defined" suri);
614 self#setLastItem (Some (`Qed uri));
616 | TacticAst.Seq tacticals ->
617 (* TODO ZACK check for proof completed at each step? *)
618 (* TODO ZACK code completely broken here: we must build logic level
619 * tacticals instead of iterating interpreter evaluation *)
620 if (List.length tacticals > 1) then
621 warning "tacticals are broken: see matitaInterpreter.ml";
622 List.iter (fun t -> ignore (self#evalTactical t)) tacticals;
623 self#setLastItem (Some `Tactic);
625 | TacticAst.Tactic tactic_phrase ->
626 let tactic = self#lookup_tactic tactic_phrase in
627 currentProof#proof#apply_tactic tactic;
628 self#setLastItem (Some `Tactic);
630 | tactical -> shared#evalTactical tactical
633 class interpreter ~(console: #MatitaTypes.console) ?mathViewer () =
634 let commandState = new commandState ~console ?mathViewer () in
635 let proofState = new proofState ~console ?mathViewer () in
637 val mutable state = commandState
639 method setState (tag: [`Proof | `Command]) =
641 | `Proof -> (state <- proofState)
642 | `Command -> (state <- commandState)
644 method private updateState = function
645 | New_state Command -> (state <- commandState)
646 | New_state Proof -> (state <- proofState)
649 method private eval f =
650 let ok () = (* console#clear (); *) (true, true) in
651 match console#wrap_exn f with
652 | Some (New_state Command) -> (state <- commandState); ok ()
653 | Some (New_state Proof) -> (state <- proofState); ok ()
654 | Some (Echo msg) -> console#echo_message msg; (true, false)
655 | Some Quiet -> ok ()
656 | None -> (false, false)
658 method evalPhrase s = self#eval (fun () -> state#evalPhrase s)
659 method evalAst ast = self#eval (fun () -> state#evalAst ast)
661 (** {2 methods delegated to current state} *)
663 method endOffset = state#endOffset
664 method lastItem = state#lastItem
665 method setEvalAstCallback = state#setEvalAstCallback
668 let interpreter ~(console: #MatitaTypes.console) ?mathViewer () =
669 new interpreter ~console ?mathViewer ()