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
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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
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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 = ref ((Unix.getpwuid (Unix.getuid ())).Unix.pw_dir) ;;
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 history = ref [] in
67 fun ~(console: #MatitaTypes.console) ->
70 val dbd = MatitaMisc.dbd_instance ()
71 val currentProof = MatitaProof.instance ()
73 (** eval a toplevel phrase in the current state and return the new state
75 method parsePhrase s =
76 match CicTextualParser2.parse_tactical s with
77 | (TacticAst.LocatedTactical (loc', tac)) as tactical ->
79 (match tac with (* update interpreter history *)
80 | TacticAst.Command (TacticAst.Qed None) ->
81 history := `Qed :: !history
82 | TacticAst.Command (TacticAst.Theorem (_, Some name, _, None)) ->
83 history := `Theorem name :: !history
84 | TacticAst.Command (TacticAst.Qed _)
85 | TacticAst.Command (TacticAst.Theorem _) -> assert false
86 | _ -> history := `Tactic :: !history);
90 method virtual evalTactical:
91 (CicAst.term, string) TacticAst.tactical -> outcome
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"
106 (** Implements phrases that should be accepted in all states *)
108 ~(disambiguator: MatitaTypes.disambiguator)
109 ~(console: #MatitaTypes.console)
110 ?(mathViewer: MatitaTypes.mathViewer option)
114 inherit interpreterState ~console
115 method evalTactical = function
116 | TacticAst.Command TacticAst.Quit ->
117 currentProof#quit ();
118 assert false (* dummy answer, useless *)
119 | TacticAst.Command TacticAst.Proof ->
120 (* do nothing, just for compatibility with coq syntax *)
122 | TacticAst.Command (TacticAst.Baseuri (Some uri)) ->
123 Lazy.force baseuri := uri;
124 console#echo_message (sprintf "base uri set to \"%s\"" uri);
126 | TacticAst.Command (TacticAst.Baseuri None) ->
127 console#echo_message (sprintf "base uri is \"%s\""
128 !(Lazy.force baseuri));
130 | TacticAst.Command (TacticAst.Basedir (Some path)) ->
132 console#echo_message (sprintf "base dir set to \"%s\"" path);
134 | TacticAst.Command (TacticAst.Basedir None) ->
135 console#echo_message (sprintf "base dir is \"%s\"" !basedir);
137 | TacticAst.Command (TacticAst.Check term) ->
138 let (_, _, term,ugraph) =
139 MatitaCicMisc.disambiguate ~disambiguator ~currentProof term
141 let (context, metasenv) =
142 MatitaCicMisc.get_context_and_metasenv currentProof
144 (* this is the Eval Compute
145 let term = CicReduction.whd context term in
147 let dummyno = CicMkImplicit.new_meta metasenv [] in
149 CicTypeChecker.type_of_aux' metasenv context term ugraph
151 (* TASSI: here ugraph1 is unused.... FIXME *)
152 let expr = Cic.Cast (term, ty) in
153 (match mathViewer with
154 | Some v -> v#checkTerm (`Cic expr)
157 | TacticAst.Command (TacticAst.Search_pat (search_kind, pat)) ->
159 match search_kind with
160 | `Locate -> MetadataQuery.locate ~dbd pat
161 | `Elim -> MetadataQuery.elim ~dbd pat
164 (* TODO ZACK: show URIs to the user *)
166 | TacticAst.Command (TacticAst.Print `Env) ->
167 let uris = CicEnvironment.list_uri () in
168 console#echo_message "Environment:";
170 console#echo_message (" " ^ (UriManager.string_of_uri u))
173 | TacticAst.Command (TacticAst.Print `Coer) ->
174 let uris = CoercGraph.get_coercions_list () in
175 console#echo_message "Coercions:";
176 List.iter (fun (s,t,u) ->
177 console#echo_message (" " ^ (UriManager.string_of_uri u))
181 raise (Command_error (TacticAstPp.pp_tactical tactical))
186 let pp_indtypes indTypes =
188 (fun (name, _, typ, constructors) ->
189 printf "%s: %s\n" name (CicPp.ppterm typ);
191 (fun (name, term) -> printf "\t%s: %s\n" name (CicPp.ppterm term))
196 let inddef_of_ast params indTypes (disambiguator:MatitaTypes.disambiguator) =
197 let add_pi binders t =
199 (fun (name, ast) acc ->
200 CicAst.Binder (`Forall, (Cic.Name name, Some ast), acc))
204 List.map (fun (name, _, typ, _) -> (name, add_pi params typ)) indTypes
206 let binders = ind_binders @ params in
208 let add_ast ast = asts := ast :: !asts in
209 let paramsno = List.length params in
210 let indbindersno = List.length ind_binders in
212 (fun (name, _, typ, constructors) ->
213 add_ast (add_pi params typ);
214 List.iter (fun (_, ast) -> add_ast (add_pi binders ast)) constructors)
216 let (_, metasenv, terms, ugraph) =
217 disambiguator#disambiguateTermAsts ~metasenv:[] !asts
219 let terms = ref (List.rev terms) in
221 match !terms with [] -> assert false | hd :: tl -> terms := tl; hd
225 | (name, _, _, _) :: _ -> qualify name ^ ".ind"
229 let counter = ref 0 in
233 CicUtil.term_of_uri (sprintf "%s#xpointer(1/%d)" uri !counter))
236 let subst_mutinds = List.fold_right CicSubstitution.subst mutinds in
239 (fun acc (name, inductive, typ, constructors) ->
240 let cicTyp = get_term () in
241 let cicConstructors =
243 (fun acc (name, _) ->
245 subst_mutinds (CicUtil.strip_prods indbindersno (get_term ()))
250 (name, inductive, cicTyp, List.rev cicConstructors) :: acc)
253 let cicIndTypes = List.rev cicIndTypes in
254 (UriManager.uri_of_string uri, (cicIndTypes, [], paramsno))
257 save_object_to_disk uri obj
259 let ensure_path_exists path =
260 let dir = Filename.dirname path in
262 let stats = Unix.stat dir in
263 if stats.Unix.st_kind <> Unix.S_DIR then
264 raise (Failure (dir ^ " already exists and is not a directory"))
268 Unix.Unix_error (_,_,_) ->
269 let pstatus = Unix.system ("mkdir -p " ^ dir) in
271 | Unix.WEXITED n when n = 0 -> ()
272 | _ -> raise (Failure ("Unable to create " ^ dir))
274 (* generate annobj, ids_to_inner_sorts and ids_to_inner_types *)
275 let annobj,_,_,ids_to_inner_sorts,ids_to_inner_types,_,_ =
276 Cic2acic.acic_object_of_cic_object ~eta_fix:false obj
281 Cic2Xml.print_object uri ~ids_to_inner_sorts ~ask_dtd_to_the_getter:false
285 Cic2Xml.print_inner_types uri ~ids_to_inner_sorts ~ids_to_inner_types
286 ~ask_dtd_to_the_getter:false
289 (* prepare URIs and paths *)
290 let innertypesuri = UriManager.innertypesuri_of_uri uri in
291 let bodyuri = UriManager.bodyuri_of_uri uri in
292 let innertypesfilename = Str.replace_first (Str.regexp "^cic:") ""
293 (UriManager.string_of_uri innertypesuri) ^ ".xml" in
294 let innertypespath = !basedir ^ "/" ^ innertypesfilename in
295 let xmlfilename = Str.replace_first (Str.regexp "^cic:") ""
296 (UriManager.string_of_uri uri) ^ ".xml" in
297 let xmlpath = !basedir ^ "/" ^ xmlfilename in
298 let xmlbodyfilename = Str.replace_first (Str.regexp "^cic:") ""
299 (UriManager.string_of_uri uri) ^ ".body.xml" in
300 let xmlbodypath = !basedir ^ "/" ^ xmlbodyfilename in
301 let path_scheme_of path = "file:/" ^ path in
303 (* now write to disk *)
304 ensure_path_exists innertypespath;
305 Xml.pp ~quiet:true xmlinnertypes (Some innertypespath) ;
306 ensure_path_exists xmlpath;
307 Xml.pp ~quiet:true xml (Some xmlpath) ;
309 (* now register to the getter *)
310 Http_getter.register' innertypesuri (path_scheme_of innertypespath);
311 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 ~quiet:true bodyxml (Some xmlbodypath) ;
319 Http_getter.register' bodyuri (path_scheme_of xmlbodypath)
325 (* TODO Zack a lot more to be done here:
326 * - save object to disk in xml format
327 * - register uri to the getter
328 * - save universe file *)
329 let add_constant_to_world ~(console: #MatitaTypes.console)
330 ~dbd ~uri ?body ~ty ?(params = []) ?(attrs = []) ~ugraph ()
332 let suri = UriManager.string_of_uri uri in
333 if CicEnvironment.in_library uri then
334 error (sprintf "%s constant already defined" suri)
336 let name = UriManager.name_of_uri uri in
337 let obj = Cic.Constant (name, body, ty, params, attrs) in
338 let ugraph = CicUnivUtils.clean_and_fill uri obj ugraph in
339 CicEnvironment.add_type_checked_term uri (obj, ugraph);
340 MetadataDb.index_constant ~dbd
341 ~owner:(Helm_registry.get "matita.owner") ~uri ~body ~ty;
342 save_object_to_disk uri obj;
343 console#echo_message (sprintf "%s constant defined" suri)
346 let add_inductive_def_to_world ~(console: #MatitaTypes.console)
347 ~dbd ~uri ~indTypes ?(params = []) ?(leftno = 0) ?(attrs = []) ~ugraph ()
349 let suri = UriManager.string_of_uri uri in
350 if CicEnvironment.in_library uri then
351 error (sprintf "%s inductive type already defined" suri)
353 let name = UriManager.name_of_uri uri in
354 let obj = Cic.InductiveDefinition (indTypes, params, leftno, attrs) in
355 let ugraph = CicUnivUtils.clean_and_fill uri obj ugraph in
356 CicEnvironment.put_inductive_definition uri (obj, ugraph);
357 MetadataDb.index_inductive_def ~dbd
358 ~owner:(Helm_registry.get "matita.owner") ~uri ~types:indTypes;
359 save_object_to_disk uri obj;
360 console#echo_message (sprintf "%s inductive type defined" suri);
363 let obj = CicElim.elim_of ~sort uri 0 in
364 let (name, body, ty, attrs) = split_obj obj in
365 let suri = qualify name ^ ".con" in
366 let uri = UriManager.uri_of_string suri in
367 (* TODO Zack: make CicElim returns a universe *)
368 let ugraph = CicUniv.empty_ugraph in
369 add_constant_to_world ~console ~dbd ~uri ?body ~ty ~attrs ~ugraph ();
372 (sprintf "%s eliminator (automatically) defined" suri)
374 with CicElim.Can_t_eliminate -> ()
376 List.iter elim [ Cic.Prop; Cic.Set; (Cic.Type (CicUniv.fresh ())) ];
379 (** Implements phrases that should be accepted only in Command state *)
381 ~(disambiguator: MatitaTypes.disambiguator)
382 ~(console: #MatitaTypes.console)
386 let shared = new sharedState ~disambiguator ~console ?mathViewer () in
388 inherit interpreterState ~console
390 method evalTactical = function
391 | TacticAst.LocatedTactical (_, tactical) -> self#evalTactical tactical
392 | TacticAst.Command (TacticAst.Theorem (_, Some name, ast, None)) ->
393 let (_, metasenv, expr,ugraph) =
394 disambiguator#disambiguateTermAst ast
396 let uri = UriManager.uri_of_string (qualify name ^ ".con") in
397 let proof = MatitaProof.proof ~typ:expr ~uri ~metasenv () in
398 currentProof#start proof;
401 (TacticAst.Theorem (_, Some name, type_ast, Some body_ast)) ->
402 let (_, metasenv, type_cic, ugraph) =
403 disambiguator#disambiguateTermAst type_ast
405 let (_, metasenv, body_cic, ugraph) =
406 disambiguator#disambiguateTermAst ~metasenv body_ast
408 let (body_type, ugraph) =
409 CicTypeChecker.type_of_aux' metasenv [] body_cic ugraph
411 let uri = UriManager.uri_of_string (qualify name ^ ".con") in
412 let (subst, metasenv, ugraph) =
413 CicUnification.fo_unif metasenv [] body_type type_cic ugraph
415 let body = CicMetaSubst.apply_subst subst body_cic in
416 let ty = CicMetaSubst.apply_subst subst type_cic in
417 add_constant_to_world ~console ~dbd ~uri ~body ~ty ~ugraph ();
419 | TacticAst.Command (TacticAst.Inductive (params, indTypes)) ->
421 let (uri, (indTypes, params, leftno)) =
422 inddef_of_ast params indTypes disambiguator
424 let obj = Cic.InductiveDefinition (indTypes, params, leftno, []) in
426 CicTypeChecker.typecheck_mutual_inductive_defs uri
427 (indTypes, params, leftno) CicUniv.empty_ugraph
429 add_inductive_def_to_world ~console
430 ~dbd ~uri ~indTypes ~params ~leftno ~ugraph ();
432 | TacticAst.Command TacticAst.Quit ->
433 currentProof#quit ();
434 New_state Command (* dummy answer, useless *)
435 | TacticAst.Command TacticAst.Proof ->
436 (* do nothing, just for compatibility with coq syntax *)
438 | TacticAst.Command (TacticAst.Coercion c_ast) ->
439 let env, metasenv, coercion, ugraph =
440 disambiguator#disambiguateTermAst c_ast
442 let coer_uri,coer_ty =
447 CicEnvironment.get_obj CicUniv.empty_ugraph uri
450 | Cic.Constant (_,_,ty,_,_)
451 | Cic.Variable (_,_,ty,_,_) ->
454 | Cic.MutConstruct (uri,t,c,_) ->
456 CicEnvironment.get_obj CicUniv.empty_ugraph uri
459 | Cic.InductiveDefinition (l,_,_,_) ->
460 let (_,_,_,cl) = List.nth l t in
461 let (_,cty) = List.nth cl c in
466 (* we have to get the source and the tgt type uri
467 * in Coq syntax we have already their names, but
468 * since we don't support Funclass and similar I think
469 * all the coercion should be of the form
471 * So we should be able to extract them from the coercion type
473 let extract_last_two_p ty =
474 let rec aux = function
475 | Cic.Prod( _, src, Cic.Prod (n,t1,t2)) -> aux (Cic.Prod(n,t1,t2))
476 | Cic.Prod( _, src, tgt) -> src, tgt
481 let rec uri_of_term = function
482 | Cic.Const(u,_) -> u
483 | Cic.MutInd (u, i , _) ->
484 (* we have to build by hand the #xpointer *)
485 let base = UriManager.string_of_uri u in
486 let xp = "#xpointer(1/" ^ (string_of_int (i+1)) ^ ")" in
487 UriManager.uri_of_string (base ^ xp)
488 | Cic.Appl (he::_) -> uri_of_term he
490 prerr_endline ("Fallisco a estrarre la uri di " ^
494 let ty_src,ty_tgt = extract_last_two_p coer_ty in
495 let src_uri = uri_of_term ty_src in
496 let tgt_uri = uri_of_term ty_tgt in
497 let coercions_to_add =
498 CoercGraph.close_coercion_graph src_uri tgt_uri coer_uri
500 (* FIXME: we should chek it this object can be a coercion
501 * maybe add the check to extract_last_two_p
503 console#echo_message (sprintf "Coercion %s"
504 (UriManager.string_of_uri coer_uri));
505 List.iter (fun (uri,obj,ugraph) ->
508 (sprintf "Coercion (automatic) %s"
509 (UriManager.string_of_uri uri));
511 let (name, body, ty, attrs) = split_obj obj in
512 add_constant_to_world ~console
513 ~dbd ~uri ?body ~ty ~attrs ~ugraph ();
516 | tactical -> shared#evalTactical tactical
519 (** create a ProofEngineTypes.mk_fresh_name_type function which uses given
520 * names as long as they are available, then it fallbacks to name generation
521 * using FreshNamesGenerator module *)
523 let len = List.length names in
525 fun metasenv context name ~typ ->
526 if !count < len then begin
527 let name = Cic.Name (List.nth names !count) in
531 FreshNamesGenerator.mk_fresh_name ~subst:[] metasenv context name ~typ
533 (** Implements phrases that should be accepted only in Proof state, basically
536 ~(disambiguator: MatitaTypes.disambiguator)
537 ~(console: #MatitaTypes.console)
541 let shared = new sharedState ~disambiguator ~console ?mathViewer () in
543 inherit interpreterState ~console
545 method private disambiguate ast =
546 let (_, _, term, _) =
547 MatitaCicMisc.disambiguate ~disambiguator ~currentProof ast
551 (** tactic AST -> ProofEngineTypes.tactic *)
552 method private lookup_tactic = function
553 | TacticAst.LocatedTactic (_, tactic) -> self#lookup_tactic tactic
554 | TacticAst.Intros (_, names) -> (* TODO Zack implement intros length *)
555 PrimitiveTactics.intros_tac ~mk_fresh_name_callback:(namer_of names)
557 | TacticAst.Reflexivity -> Tactics.reflexivity
558 | TacticAst.Assumption -> Tactics.assumption
559 | TacticAst.Contradiction -> Tactics.contradiction
560 | TacticAst.Exists -> Tactics.exists
561 | TacticAst.Fourier -> Tactics.fourier
562 | TacticAst.Left -> Tactics.left
563 | TacticAst.Right -> Tactics.right
564 | TacticAst.Ring -> Tactics.ring
565 | TacticAst.Split -> Tactics.split
566 | TacticAst.Symmetry -> Tactics.symmetry
567 | TacticAst.Transitivity term ->
568 Tactics.transitivity (self#disambiguate term)
569 | TacticAst.Apply term -> Tactics.apply (self#disambiguate term)
570 | TacticAst.Absurd term -> Tactics.absurd (self#disambiguate term)
571 | TacticAst.Exact term -> Tactics.exact (self#disambiguate term)
572 | TacticAst.Cut term -> Tactics.cut (self#disambiguate term)
573 | TacticAst.Elim (term, _) -> (* TODO Zack implement "using" argument *)
574 Tactics.elim_intros_simpl (self#disambiguate term)
575 | TacticAst.ElimType term -> Tactics.elim_type (self#disambiguate term)
576 | TacticAst.Replace (what, with_what) ->
577 Tactics.replace ~what:(self#disambiguate what)
578 ~with_what:(self#disambiguate with_what)
579 | TacticAst.Auto -> Tactics.auto_new ~dbd
581 (* TODO Zack a lot more of tactics to be implemented here ... *)
582 | TacticAst.Change of 'term * 'term * 'ident option
583 | TacticAst.Change_pattern of 'term pattern * 'term * 'ident option
584 | TacticAst.Decompose of 'ident * 'ident list
585 | TacticAst.Discriminate of 'ident
586 | TacticAst.Fold of reduction_kind * 'term
587 | TacticAst.Injection of 'ident
588 | TacticAst.LetIn of 'term * 'ident
589 | TacticAst.Reduce of reduction_kind * 'term pattern * 'ident option
590 | TacticAst.Replace_pattern of 'term pattern * 'term
591 | TacticAst.Rewrite of direction * 'term * 'ident option
593 | _ -> MatitaTypes.not_implemented "some tactic"
595 method evalTactical = function
596 | TacticAst.LocatedTactical (_, tactical) -> self#evalTactical tactical
597 | TacticAst.Command TacticAst.Abort ->
598 currentProof#abort ();
600 | TacticAst.Command (TacticAst.Undo steps) ->
601 currentProof#proof#undo ?steps ();
603 | TacticAst.Command (TacticAst.Redo steps) ->
604 currentProof#proof#redo ?steps ();
606 | TacticAst.Command (TacticAst.Qed None) ->
607 if not (currentProof#onGoing ()) then assert false;
608 let proof = currentProof#proof in
609 let (uri, metasenv, bo, ty) = proof#proof in
610 let uri = MatitaTypes.unopt_uri uri in
611 let suri = UriManager.string_of_uri uri in
612 (* TODO Zack this function probably should not simply fail with
613 * Failure, but rather raise some more meaningful exception *)
614 if metasenv <> [] then failwith "Proof not completed";
615 let proved_ty,ugraph =
616 CicTypeChecker.type_of_aux' [] [] bo CicUniv.empty_ugraph
619 CicReduction.are_convertible [] proved_ty ty ugraph
621 if not b then failwith "Wrong proof";
622 add_constant_to_world ~console ~dbd ~uri ~body:bo ~ty ~ugraph ();
623 currentProof#abort ();
624 console#echo_message (sprintf "%s defined" suri);
626 | TacticAst.Seq tacticals ->
627 (* TODO Zack check for proof completed at each step? *)
628 List.iter (fun t -> ignore (self#evalTactical t)) tacticals;
630 | TacticAst.Tactic tactic_phrase ->
631 let tactic = self#lookup_tactic tactic_phrase in
632 currentProof#proof#apply_tactic tactic;
634 | tactical -> shared#evalTactical tactical
638 ~(disambiguator: MatitaTypes.disambiguator)
639 ~(console: #MatitaTypes.console)
643 let commandState = new commandState ~disambiguator ~console ?mathViewer () in
644 let proofState = new proofState ~disambiguator ~console ?mathViewer () in
646 val mutable state = commandState
648 method reset = state <- commandState
650 method endOffset = state#endOffset
652 method private updateState = function
653 | New_state Command -> (state <- commandState)
654 | New_state Proof -> (state <- proofState)
657 method private eval f =
658 let ok () = (* console#clear (); *) (true, true) in
659 match console#wrap_exn f with
660 | Some (New_state Command) -> (state <- commandState); ok ()
661 | Some (New_state Proof) -> (state <- proofState); ok ()
662 | Some (Echo msg) -> console#echo_message msg; (true, false)
663 | Some Quiet -> ok ()
664 | None -> (false, false)
666 method evalPhrase s = self#eval (fun () -> state#evalPhrase s)
667 method evalAst ast = self#eval (fun () -> state#evalAst ast)
671 ~(disambiguator: MatitaTypes.disambiguator)
672 ~(console: #MatitaTypes.console)
676 new interpreter ~disambiguator ~console ?mathViewer ()