* http://helm.cs.unibo.it/
*)
-type state_tag = [ `Command | `Proof ]
+(** Interpreter for textual phrases coming from matita's console (textual entry
+* window at the bottom of the main window).
+*
+* Interpreter is either in Command state or in Proof state (see state type
+* below). In Command state commands for starting proofs are accepted, but
+* tactic and tactical applications are not. In Proof state both
+* tactic/tacticals and commands are accepted.
+*)
+
+open Printf
+
+open MatitaTypes
+
+type state = Command | Proof
+type outcome = New_state of state | Quiet | Echo of string
+
+exception Command_error of string
+
+(*
+let uri name =
+ UriManager.uri_of_string (sprintf "%s/%s" BuildTimeConf.base_uri name)
+*)
+
+let baseuri = ref "cic:/matita"
+let qualify name =
+ let baseuri = !baseuri in
+ if baseuri.[String.length baseuri - 1] = '/' then
+ baseuri ^ name
+ else
+ String.concat "/" [baseuri; name]
+let split_obj = function
+ | Cic.Constant (name, body, ty, _)
+ | Cic.Variable (name, body, ty, _) -> (name, body, ty)
+ | _ -> assert false
+
+let canonical_context metano metasenv =
+ try
+ let (_, context, _) = List.find (fun (m, _, _) -> m = metano) metasenv in
+ context
+ with Not_found ->
+ failwith (sprintf "Can't find canonical context for %d" metano)
+
+let get_context_and_metasenv (currentProof:MatitaTypes.currentProof) =
+ if currentProof#onGoing () then
+ let proof = currentProof#proof in
+ let metasenv = proof#metasenv in
+ let goal = proof#goal in
+ (canonical_context goal metasenv, metasenv)
+ else
+ ([], [])
+
+ (** term AST -> Cic.term. Uses disambiguator and change imperatively the
+ * metasenv as needed *)
+let disambiguate ~(disambiguator:MatitaTypes.disambiguator) ~currentProof ast =
+ if currentProof#onGoing () then begin
+ let proof = currentProof#proof in
+ let metasenv = proof#metasenv in
+ let goal = proof#goal in
+ let context = canonical_context goal metasenv in
+ let (_, metasenv, term,ugraph) as retval =
+ disambiguator#disambiguateTermAst ~context ~metasenv ast
+ in
+ proof#set_metasenv metasenv;
+ retval
+ end else
+ disambiguator#disambiguateTermAst ast
+
+class virtual interpreterState =
+ (* static values, shared by all states inheriting this class *)
+ let loc = ref None in
+ let history = ref [] in
+ fun ~(console: MatitaTypes.console) ->
+ object (self)
-class type interpreterState =
- object
(** eval a toplevel phrase in the current state and return the new state
*)
- method evalPhrase: string -> state_tag
+ method parsePhrase s =
+ match CicTextualParser2.parse_tactical s with
+ | (TacticAst.LocatedTactical (loc', tac)) as tactical ->
+ loc := Some loc';
+ (match tac with (* update interpreter history *)
+ | TacticAst.Command (TacticAst.Qed None) ->
+ history := `Qed :: !history
+ | TacticAst.Command (TacticAst.Theorem (_, Some name, _, None)) ->
+ history := `Theorem name :: !history
+ | TacticAst.Command (TacticAst.Qed _)
+ | TacticAst.Command (TacticAst.Theorem _) -> assert false
+ | _ -> history := `Tactic :: !history);
+ tactical
+ | _ -> assert false
+
+ method virtual evalTactical:
+ (CicAst.term, string) TacticAst.tactical -> outcome
+
+ method evalPhrase s =
+ debug_print (sprintf "evaluating '%s'" s);
+ self#evalTactical (self#parsePhrase (Stream.of_string s))
+
+ method evalAst ast = self#evalTactical ast
+
+ method endOffset =
+ match !loc with
+ | Some (start_pos, end_pos) -> end_pos.Lexing.pos_cnum
+ | None -> failwith "MatitaInterpreter: no offset recorded"
+
end
+ (** Implements phrases that should be accepted in all states *)
+class sharedState
+ ~(disambiguator: MatitaTypes.disambiguator)
+ ~(currentProof: MatitaTypes.currentProof)
+ ~(console: MatitaTypes.console)
+ ?(mathViewer: MatitaTypes.mathViewer option)
+ ~(dbd: Mysql.dbd)
+ ()
+=
+ object (self)
+ inherit interpreterState ~console
+ method evalTactical = function
+ | TacticAst.Command TacticAst.Quit ->
+ currentProof#quit ();
+ assert false (* dummy answer, useless *)
+ | TacticAst.Command TacticAst.Proof ->
+ (* do nothing, just for compatibility with coq syntax *)
+ New_state Command
+ | TacticAst.Command (TacticAst.Baseuri (Some uri)) ->
+ baseuri := uri;
+ console#echo_message (sprintf "base uri set to \"%s\"" uri);
+ Quiet
+ | TacticAst.Command (TacticAst.Baseuri None) ->
+ console#echo_message (sprintf "base uri is \"%s\"" !baseuri);
+ Quiet
+ | TacticAst.Command (TacticAst.Check term) ->
+ let (_, _, term,ugraph) =
+ disambiguate ~disambiguator ~currentProof term
+ in
+ let (context, metasenv) = get_context_and_metasenv currentProof in
+ let dummyno = CicMkImplicit.new_meta metasenv [] in
+ let ty,ugraph1 =
+ CicTypeChecker.type_of_aux' metasenv context term ugraph
+ in
+ (* TASSI: here ugraph1 is unused.... FIXME *)
+ let expr = Cic.Cast (term, ty) in
+ let sequent = (dummyno, context, expr) in
+ (match mathViewer with
+ | None -> ()
+ | Some v -> v#checkTerm sequent metasenv);
+ Quiet
+ | TacticAst.Command (TacticAst.Search_pat (search_kind, pat)) ->
+ let uris =
+ match search_kind with
+ | `Locate -> MetadataQuery.locate ~dbd pat
+ | `Elim -> MetadataQuery.elim ~dbd pat
+ | _ -> assert false
+ in
+ (* TODO ZACK: show URIs to the user *)
+ Quiet
+ | tactical ->
+ raise (Command_error (TacticAstPp.pp_tactical tactical))
+ end
+
+open Printf
+
+let pp_indtypes indTypes =
+ List.iter
+ (fun (name, _, typ, constructors) ->
+ printf "%s: %s\n" name (CicPp.ppterm typ);
+ List.iter
+ (fun (name, term) -> printf "\t%s: %s\n" name (CicPp.ppterm term))
+ constructors)
+ indTypes;
+ flush stdout
+
+let inddef_of_ast params indTypes (disambiguator:MatitaTypes.disambiguator) =
+ let add_pi binders t =
+ List.fold_right
+ (fun (name, ast) acc ->
+ CicAst.Binder (`Forall, (Cic.Name name, Some ast), acc))
+ binders t
+ in
+ let ind_binders =
+ List.map (fun (name, _, typ, _) -> (name, add_pi params typ)) indTypes
+ in
+ let binders = ind_binders @ params in
+ let asts = ref [] in
+ let add_ast ast = asts := ast :: !asts in
+ let paramsno = List.length params in
+ let indbindersno = List.length ind_binders in
+ List.iter
+ (fun (name, _, typ, constructors) ->
+ add_ast (add_pi params typ);
+ List.iter (fun (_, ast) -> add_ast (add_pi binders ast)) constructors)
+ indTypes;
+ let (_, metasenv, terms, ugraph) =
+ disambiguator#disambiguateTermAsts ~metasenv:[] !asts
+ in
+ let terms = ref (List.rev terms) in
+ let get_term () =
+ match !terms with [] -> assert false | hd :: tl -> terms := tl; hd
+ in
+ let uri =
+ match indTypes with
+ | (name, _, _, _) :: _ -> qualify name ^ ".ind"
+ | _ -> assert false
+ in
+ let mutinds =
+ let counter = ref 0 in
+ List.map
+ (fun _ ->
+ incr counter;
+ CicUtil.term_of_uri (sprintf "%s#xpointer(1/%d)" uri !counter))
+ indTypes
+ in
+ let subst_mutinds = List.fold_right CicSubstitution.subst mutinds in
+ let cicIndTypes =
+ List.fold_left
+ (fun acc (name, inductive, typ, constructors) ->
+ let cicTyp = get_term () in
+ let cicConstructors =
+ List.fold_left
+ (fun acc (name, _) ->
+ let typ =
+ subst_mutinds (CicUtil.strip_prods indbindersno (get_term ()))
+ in
+ (name, typ) :: acc)
+ [] constructors
+ in
+ (name, inductive, cicTyp, List.rev cicConstructors) :: acc)
+ [] indTypes
+ in
+ let cicIndTypes = List.rev cicIndTypes in
+(*
+ prerr_endline uri;
+ pp_indtypes cicIndTypes;
+*)
+ (UriManager.uri_of_string uri, (cicIndTypes, [], paramsno))
+
+ (* TODO Zack a lot more to be done here:
+ * - save object to disk in xml format
+ * - register uri to the getter
+ * - save universe file *)
+let add_constant_to_world ~dbd ~uri ?body ~ty ~ugraph () =
+ let name = UriManager.name_of_uri uri in
+ let obj = Cic.Constant (name, body, ty, []) in
+ let ugraph = CicUnivUtils.clean_and_fill uri obj ugraph in
+ CicEnvironment.add_type_checked_term uri (obj, ugraph);
+ MetadataDb.index_constant ~dbd
+ ~owner:(Helm_registry.get "matita.owner") ~uri ~body ~ty
+
+ (** Implements phrases that should be accepted only in Command state *)
class commandState
~(disambiguator: MatitaTypes.disambiguator)
- ~(console: MatitaConsole.console)
- ~new_proof ()
+ ~(currentProof: MatitaTypes.currentProof)
+ ~(console: MatitaTypes.console)
+ ?mathViewer
+ ~(dbd: Mysql.dbd)
+ ()
=
- object
- method evalPhrase s: state_tag =
- let command = CicTextualParser2.parse_command (Stream.of_string s) in
- match command with
- | CommandAst.Theorem (_, _, Some name, ast, None) ->
- let (_, metasenv, expr) = disambiguator#disambiguateTermAst ast in
- let _ = CicTypeChecker.type_of_aux' metasenv [] expr in
- let proof = MatitaProof.proof ~typ:expr ~metasenv () in
- new_proof proof;
- `Proof
- | _ ->
- MatitaTypes.not_implemented (* TODO Zack *)
- "MatitaInterpreter.commandState#evalPhrase: commands other than full theorem ones";
- `Proof
+ let shared =
+ new sharedState ~disambiguator ~currentProof ~console ?mathViewer ~dbd ()
+ in
+ object (self)
+ inherit interpreterState ~console
+
+ method evalTactical = function
+ | TacticAst.LocatedTactical (_, tactical) -> self#evalTactical tactical
+ | TacticAst.Command (TacticAst.Theorem (_, Some name, ast, None)) ->
+ let (_, metasenv, expr,ugraph) =
+ disambiguator#disambiguateTermAst ast
+ in
+ let uri = UriManager.uri_of_string (qualify name ^ ".con") in
+ let proof = MatitaProof.proof ~typ:expr ~uri ~metasenv () in
+ currentProof#start proof;
+ New_state Proof
+ | TacticAst.Command
+ (TacticAst.Theorem (_, Some name, type_ast, Some body_ast)) ->
+ let (_, metasenv, type_cic, ugraph) =
+ disambiguator#disambiguateTermAst type_ast
+ in
+ let (_, metasenv, body_cic, ugraph) =
+ disambiguator#disambiguateTermAst ~metasenv body_ast
+ in
+ let (body_type, ugraph) =
+ CicTypeChecker.type_of_aux' metasenv [] body_cic ugraph
+ in
+ let uri = UriManager.uri_of_string (qualify name ^ ".con") in
+ let (subst, metasenv, ugraph) =
+ CicUnification.fo_unif metasenv [] body_type type_cic ugraph
+ in
+ let body = CicMetaSubst.apply_subst subst body_cic in
+ let ty = CicMetaSubst.apply_subst subst type_cic in
+ add_constant_to_world ~dbd ~uri ~body ~ty ~ugraph ();
+ Quiet
+ | TacticAst.Command (TacticAst.Inductive (params, indTypes)) ->
+ let (uri, (indTypes, params, leftno)) =
+ inddef_of_ast params indTypes disambiguator
+ in
+ let obj = Cic.InductiveDefinition (indTypes, params, leftno) in
+ let ugraph =
+ CicTypeChecker.typecheck_mutual_inductive_defs uri
+ (indTypes, params, leftno) CicUniv.empty_ugraph
+ in
+ let ugraph = CicUnivUtils.clean_and_fill uri obj ugraph in
+ CicEnvironment.put_inductive_definition uri (obj, ugraph);
+ MetadataDb.index_inductive_def ~dbd
+ ~owner:(Helm_registry.get "matita.owner") ~uri ~types:indTypes;
+ let msgs = ref [] in
+ let elim sort =
+ try
+ let obj = CicElim.elim_of ~sort uri 0 in
+ let (name, body, ty) = split_obj obj in
+ let uri = UriManager.uri_of_string (qualify name ^ ".con") in
+ (* TODO Zack: make CicElim returns a universe *)
+ let ugraph = CicUniv.empty_ugraph in
+ add_constant_to_world ~dbd ~uri ?body ~ty ~ugraph ();
+ msgs := (sprintf "%s defined" name) :: !msgs;
+ with CicElim.Can_t_eliminate -> ()
+ in
+ List.iter elim [ Cic.Prop; Cic.Set; (Cic.Type (CicUniv.fresh ())) ];
+ Echo (String.concat "\n" (List.rev !msgs))
+ | TacticAst.Command TacticAst.Quit ->
+ currentProof#quit ();
+ New_state Command (* dummy answer, useless *)
+ | TacticAst.Command TacticAst.Proof ->
+ (* do nothing, just for compatibility with coq syntax *)
+ New_state Command
+ | tactical -> shared#evalTactical tactical
end
+ (** create a ProofEngineTypes.mk_fresh_name_type function which uses given
+ * names as long as they are available, then it fallbacks to name generation
+ * using FreshNamesGenerator module *)
+let namer_of names =
+ let len = List.length names in
+ let count = ref 0 in
+ fun metasenv context name ~typ ->
+ if !count < len then begin
+ let name = Cic.Name (List.nth names !count) in
+ incr count;
+ name
+ end else
+ FreshNamesGenerator.mk_fresh_name ~subst:[] metasenv context name ~typ
+
+ (** Implements phrases that should be accepted only in Proof state, basically
+ * tacticals *)
class proofState
~(disambiguator: MatitaTypes.disambiguator)
- ~(console: MatitaConsole.console)
- ~get_proof ()
+ ~(currentProof: MatitaTypes.currentProof)
+ ~(console: MatitaTypes.console)
+ ?mathViewer
+ ~(dbd: Mysql.dbd)
+ ()
=
- object
- method evalPhrase (s: string): state_tag =
- (* TODO Zack *)
- MatitaTypes.not_implemented "MatitaInterpreter.proofState#evalPhrase";
- `Command
+ let disambiguate ast =
+ let (_, _, term, _) = disambiguate ~disambiguator ~currentProof ast in
+ term
+ in
+ (** tactic AST -> ProofEngineTypes.tactic *)
+ let rec lookup_tactic = function
+ | TacticAst.LocatedTactic (_, tactic) -> lookup_tactic tactic
+ | TacticAst.Intros (_, names) -> (* TODO Zack implement intros length *)
+ PrimitiveTactics.intros_tac ~mk_fresh_name_callback:(namer_of names) ()
+ | TacticAst.Reflexivity -> Tactics.reflexivity
+ | TacticAst.Assumption -> Tactics.assumption
+ | TacticAst.Contradiction -> Tactics.contradiction
+ | TacticAst.Exists -> Tactics.exists
+ | TacticAst.Fourier -> Tactics.fourier
+ | TacticAst.Left -> Tactics.left
+ | TacticAst.Right -> Tactics.right
+ | TacticAst.Ring -> Tactics.ring
+ | TacticAst.Split -> Tactics.split
+ | TacticAst.Symmetry -> Tactics.symmetry
+ | TacticAst.Transitivity term -> Tactics.transitivity (disambiguate term)
+ | TacticAst.Apply term -> Tactics.apply (disambiguate term)
+ | TacticAst.Absurd term -> Tactics.absurd (disambiguate term)
+ | TacticAst.Exact term -> Tactics.exact (disambiguate term)
+ | TacticAst.Cut term -> Tactics.cut (disambiguate term)
+ | TacticAst.Elim (term, _) -> (* TODO Zack implement "using" argument *)
+ Tactics.elim_intros_simpl (disambiguate term)
+ | TacticAst.ElimType term -> Tactics.elim_type (disambiguate term)
+ | TacticAst.Replace (what, with_what) ->
+ Tactics.replace ~what:(disambiguate what)
+ ~with_what:(disambiguate with_what)
+ | TacticAst.Auto -> Tactics.auto_new ~dbd
+ (*
+ (* TODO Zack a lot more of tactics to be implemented here ... *)
+ | TacticAst.Change of 'term * 'term * 'ident option
+ | TacticAst.Change_pattern of 'term pattern * 'term * 'ident option
+ | TacticAst.Decompose of 'ident * 'ident list
+ | TacticAst.Discriminate of 'ident
+ | TacticAst.Fold of reduction_kind * 'term
+ | TacticAst.Injection of 'ident
+ | TacticAst.LetIn of 'term * 'ident
+ | TacticAst.Reduce of reduction_kind * 'term pattern * 'ident option
+ | TacticAst.Replace_pattern of 'term pattern * 'term
+ | TacticAst.Rewrite of direction * 'term * 'ident option
+ *)
+ | _ ->
+ MatitaTypes.not_implemented "some tactic"
+ in
+ let shared = new sharedState ~disambiguator ~currentProof ~console ~dbd () in
+ object (self)
+ inherit interpreterState ~console
+
+ method evalTactical = function
+ | TacticAst.LocatedTactical (_, tactical) -> self#evalTactical tactical
+ | TacticAst.Command TacticAst.Abort ->
+ currentProof#abort ();
+ New_state Command
+ | TacticAst.Command (TacticAst.Undo steps) ->
+ currentProof#proof#undo ?steps ();
+ New_state Proof
+ | TacticAst.Command (TacticAst.Redo steps) ->
+ currentProof#proof#redo ?steps ();
+ New_state Proof
+ | TacticAst.Command (TacticAst.Qed None) ->
+ if not (currentProof#onGoing ()) then assert false;
+ let proof = currentProof#proof in
+ let (uri, metasenv, bo, ty) = proof#proof in
+ let uri = MatitaTypes.unopt_uri uri in
+ (* TODO Zack this function probably should not simply fail with
+ * Failure, but rather raise some more meaningful exception *)
+ if metasenv <> [] then failwith "Proof not completed";
+ let proved_ty,ugraph =
+ CicTypeChecker.type_of_aux' [] [] bo CicUniv.empty_ugraph
+ in
+ let b,ugraph =
+ CicReduction.are_convertible [] proved_ty ty ugraph
+ in
+ if not b then failwith "Wrong proof";
+ add_constant_to_world ~dbd ~uri ~body:bo ~ty ~ugraph ();
+ currentProof#abort ();
+ (match mathViewer with None -> () | Some v -> v#unload ());
+ New_state Command
+ | TacticAst.Seq tacticals ->
+ (* TODO Zack check for proof completed at each step? *)
+ List.iter (fun t -> ignore (self#evalTactical t)) tacticals;
+ New_state Proof
+ | TacticAst.Tactic tactic_phrase ->
+ let tactic = lookup_tactic tactic_phrase in
+ currentProof#proof#apply_tactic tactic;
+ New_state Proof
+ | tactical -> shared#evalTactical tactical
end
class interpreter
~(disambiguator: MatitaTypes.disambiguator)
- ~(console: MatitaConsole.console)
- ~(get_proof: unit -> MatitaTypes.proof)
- ~(new_proof: MatitaTypes.proof -> unit)
+ ~(currentProof: MatitaTypes.currentProof)
+ ~(console: MatitaTypes.console)
+ ?mathViewer
+ ~(dbd: Mysql.dbd)
()
=
let commandState =
- lazy (new commandState ~disambiguator ~console ~new_proof ())
+ new commandState ~disambiguator ~currentProof ~console ?mathViewer ~dbd ()
in
let proofState =
- lazy (new proofState ~disambiguator ~console ~get_proof ())
+ new proofState ~disambiguator ~currentProof ~console ?mathViewer ~dbd ()
in
- object
- val mutable state = Lazy.force commandState
+ object (self)
+ val mutable state = commandState
- method evalPhrase s =
- match state#evalPhrase s with
- | `Command -> state <- Lazy.force commandState
- | `Proof -> state <- Lazy.force proofState
+ method reset = state <- commandState
+
+ method endOffset = state#endOffset
+
+ method private updateState = function
+ | New_state Command -> (state <- commandState)
+ | New_state Proof -> (state <- proofState)
+ | _ -> ()
+
+ method private eval f =
+ let ok () = console#clear (); (true, true) in
+ match console#wrap_exn f with
+ | Some (New_state Command) -> (state <- commandState); ok ()
+ | Some (New_state Proof) -> (state <- proofState); ok ()
+ | Some (Echo msg) -> console#echo_message msg; (true, false)
+ | Some Quiet -> ok ()
+ | None -> (false, false)
+
+ method evalPhrase s = self#eval (fun () -> state#evalPhrase s)
+ method evalAst ast = self#eval (fun () -> state#evalAst ast)
end
projects / helm.git / blobdiff