- let pointers = CicUtil.select ~term:where ~context:path in
- (match reduction_kind with
- | `Normalize ->
- ProofEngineTypes.apply_tactic
- (Tactics.normalize ~also_in_hypotheses ~terms:(Some pointers))
- status
- | `Reduce ->
- ProofEngineTypes.apply_tactic
- (Tactics.reduce ~also_in_hypotheses ~terms:(Some pointers))
- status
- | `Simpl ->
- ProofEngineTypes.apply_tactic
- (Tactics.simpl ~also_in_hypotheses ~terms:(Some pointers))
- status
- | `Whd ->
- ProofEngineTypes.apply_tactic
- (Tactics.whd ~also_in_hypotheses ~terms:(Some pointers))
- status))
- | TacticAst.Reduce (_,reduction_kind,opts) ->
- let terms, also_in_hypotheses =
- match opts with
- | Some (l,`Goal) -> Some l, false
- | Some (l,`Everywhere) -> Some l, true
- | None -> None, false
- in
- (match reduction_kind with
- | `Normalize -> Tactics.normalize ~also_in_hypotheses ~terms
- | `Reduce -> Tactics.reduce ~also_in_hypotheses ~terms
- | `Simpl -> Tactics.simpl ~also_in_hypotheses ~terms
- | `Whd -> Tactics.whd ~also_in_hypotheses ~terms)
- | TacticAst.Rewrite (_,dir,t,ident) ->
- if dir = `Left then
- EqualityTactics.rewrite_tac ~term:t
- else
- EqualityTactics.rewrite_back_tac ~term:t
- | _ -> assert false
-
-let eval_tactical status tac =
- let apply_tactic tactic =
- let (proof, goals) =
- ProofEngineTypes.apply_tactic tactic (MatitaMisc.get_proof_status status)
- in
- let new_status =
- match goals with
- | [] ->
- let (_,metasenv,_,_) = proof in
- (match metasenv with
- | [] -> Proof proof
- | (ng,_,_)::_ -> Incomplete_proof (proof,ng))
- | ng::_ -> Incomplete_proof (proof, ng)
- in
- { status with proof_status = new_status }
- in
- let rec tactical_of_ast = function
- | TacticAst.Tactic (loc, tactic) -> tactic_of_ast tactic
- | TacticAst.Fail loc -> Tacticals.fail
- | TacticAst.Do (loc, num, tactical) ->
- Tacticals.do_tactic num (tactical_of_ast tactical)
- | TacticAst.IdTac loc -> Tacticals.id_tac
- | TacticAst.Repeat (loc, tactical) ->
- Tacticals.repeat_tactic (tactical_of_ast tactical)
- | TacticAst.Seq (loc, tacticals) -> (* tac1; tac2; ... *)
- Tacticals.seq (List.map tactical_of_ast tacticals)
- | TacticAst.Then (loc, tactical, tacticals) -> (* tac; [ tac1 | ... ] *)
- Tacticals.thens (tactical_of_ast tactical)
- (List.map tactical_of_ast tacticals)
- | TacticAst.Tries (loc, tacticals) ->
- Tacticals.try_tactics
- (List.map (fun t -> "", tactical_of_ast t) tacticals)
- | TacticAst.Try (loc, tactical) ->
- Tacticals.try_tactic (tactical_of_ast tactical)
- in
- apply_tactic (tactical_of_ast tac)
-
-(** given a uri and a type list (the contructors types) builds a list of pairs
- * (name,uri) that is used to generate authomatic aliases **)
-let extract_alias types uri =
- fst(List.fold_left (
- fun (acc,i) (name, _, _, cl) ->
- ((name, UriManager.string_of_uriref (uri,[i]))
- ::
- (fst(List.fold_left (
- fun (acc,j) (name,_) ->
- (((name,UriManager.string_of_uriref (uri,[i;j])) :: acc) , j+1)
- ) (acc,1) cl))),i+1
- ) ([],0) types)
-
-(** adds a (name,uri) list l to a disambiguation environment e **)
-let env_of_list l e =
- let module DT = DisambiguateTypes in
- let module DTE = DisambiguateTypes.Environment in
- List.fold_left (
- fun e (name,uri) ->
- DTE.add
- (DT.Id name)
- (uri,fun _ _ _ -> CicUtil.term_of_uri uri)
- e
- ) e l
-
-let eval_coercion status coercion =
- let coer_uri,coer_ty =
- match coercion with
- | Cic.Const (uri,_)
- | Cic.Var (uri,_) ->
- let o,_ =
- CicEnvironment.get_obj CicUniv.empty_ugraph uri
- in
- (match o with
- | Cic.Constant (_,_,ty,_,_)
- | Cic.Variable (_,_,ty,_,_) ->
- uri,ty
- | _ -> assert false)
- | Cic.MutConstruct (uri,t,c,_) ->
- let o,_ =
- CicEnvironment.get_obj CicUniv.empty_ugraph uri
- in
- (match o with
- | Cic.InductiveDefinition (l,_,_,_) ->
- let (_,_,_,cl) = List.nth l t in
- let (_,cty) = List.nth cl c in
- uri,cty
- | _ -> assert false)
- | _ -> assert false
- in
- (* we have to get the source and the tgt type uri
- * in Coq syntax we have already their names, but
- * since we don't support Funclass and similar I think
- * all the coercion should be of the form
- * (A:?)(B:?)T1->T2
- * So we should be able to extract them from the coercion type
- *)
- let extract_last_two_p ty =
- let rec aux = function
- | Cic.Prod( _, src, Cic.Prod (n,t1,t2)) -> aux (Cic.Prod(n,t1,t2))
- | Cic.Prod( _, src, tgt) -> src, tgt
- | _ -> assert false
- in
- aux ty
- in
- let ty_src,ty_tgt = extract_last_two_p coer_ty in
- let src_uri = UriManager.uri_of_string (CicUtil.uri_of_term ty_src) in
- let tgt_uri = UriManager.uri_of_string (CicUtil.uri_of_term ty_tgt) in
- let new_coercions =
- (* also adds them to the Db *)
- CoercGraph.close_coercion_graph src_uri tgt_uri coer_uri
- in
- let status =
- List.fold_left (
- fun s (uri,o,ugraph) ->
- match o with
- | Cic.Constant (_,Some body, ty, params, attrs) ->
- MatitaSync.add_constant ~uri ~body ~ty ~ugraph ~params ~attrs status
- | _ -> assert false
- ) status new_coercions
- in
- {status with proof_status = No_proof}
-
-let eval_command status cmd =
- match cmd with
- | TacticAst.Set (loc, name, value) -> set_option status name value
- | TacticAst.Qed loc ->
- let uri, metasenv, bo, ty =
- match status.proof_status with
- | Proof (Some uri, metasenv, body, ty) ->
- uri, metasenv, body, ty
- | Proof (None, metasenv, body, ty) ->
- command_error
- ("Someone allows to start a thm without giving the "^
- "name/uri. This should be fixed!")
- | _-> command_error "You can't qed an uncomplete theorem"
- in
- let suri = UriManager.string_of_uri uri in
- if metasenv <> [] then
- command_error "Proof not completed! metasenv is not empty!";
- 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
- command_error
- ("The type of your proof is not convertible with the "^
- "type you've declared!");
- MatitaLog.message (sprintf "%s defined" suri);
- let status = MatitaSync.add_constant ~uri ~body:bo ~ty ~ugraph status in
- let status =
- let name = UriManager.name_of_uri uri in
- let new_env = env_of_list [(name,suri)] status.aliases in
- {status with aliases = new_env }
- in
- {status with proof_status = No_proof }
- | TacticAst.Inductive (loc, dummy_params, types) ->
- (* dummy_params are not real params, it is a list of nothing, and the only
- * semantic content is the len, that is leftno (note: leftno and pamaters
- * have nothing in common).
- *)
- let suri =
- match types with
- | (name, _, _, _) :: tl -> MatitaMisc.qualify status name ^ ".ind"
- | _ -> assert false
- in
- let uri = UriManager.uri_of_string suri in
- let leftno = List.length dummy_params in
- let obj = Cic.InductiveDefinition (types, [], leftno, []) in
- let ugraph =
- CicTypeChecker.typecheck_mutual_inductive_defs uri
- (types, [], leftno) CicUniv.empty_ugraph
- in
- let status =
- MatitaSync.add_inductive_def
- ~uri ~types ~params:[] ~leftno ~ugraph status
- in
- (* aliases for the constructors and types *)
- let aliases = env_of_list (extract_alias types uri) status.aliases in
- (* aliases for the eliminations principles *)
- let aliases =
- let base = String.sub suri 0 (String.length suri - 4) in
- env_of_list
- (List.fold_left (
- fun acc suffix ->
- if List.exists (
- fun (uri,_) -> UriManager.string_of_uri uri = base ^ suffix
- ) status.objects then
- let u = base ^ suffix in
- (UriManager.name_of_uri (UriManager.uri_of_string u),u)::acc
- else
- acc
- ) [] ["_ind.con";"_rec.con";"_rec_t.con"]) aliases
- in
- let status = {status with proof_status = No_proof } in
- { status with aliases = aliases}
- | TacticAst.Theorem (loc, thm_flavour, Some name, ty, None) ->
- let uri =
- UriManager.uri_of_string (MatitaMisc.qualify status name ^ ".con")
- in
- let goalno = 1 in
- let metasenv, body =
- match status.proof_status with
- | Intermediate metasenv ->
- ((goalno, [], ty) :: metasenv) , Cic.Meta (goalno,[])
- | _-> assert false
- in
- let initial_proof = (Some uri, metasenv, body, ty) in
- { status with proof_status = Incomplete_proof (initial_proof,goalno)}
- | TacticAst.Theorem (loc, thm_flavour, Some name, ty, Some body) ->
- let uri =
- UriManager.uri_of_string (MatitaMisc.qualify status name ^ ".con")
- in
- let metasenv = MatitaMisc.get_proof_metasenv status in
- debug_print ("XXXXXXXXXX" ^ CicPp.ppterm body);
- let (body_type, ugraph) =
- CicTypeChecker.type_of_aux' metasenv [] body CicUniv.empty_ugraph
- in
- let (subst, metasenv, ugraph) =
- CicUnification.fo_unif metasenv [] body_type ty ugraph
- in
- if metasenv <> [] then
- command_error
- "metasenv not empty while giving a definition with body";
- let body = CicMetaSubst.apply_subst subst body in
- let ty = CicMetaSubst.apply_subst subst ty in
- let status = MatitaSync.add_constant ~uri ~body ~ty ~ugraph status in
- let status =
- let suri = UriManager.string_of_uri uri in
- let new_env = env_of_list [(name,suri)] status.aliases in
- {status with aliases = new_env }
- in
- {status with proof_status = No_proof}
- | TacticAst.Theorem (_, _, None, _, _) ->
- command_error "The grammar should avoid having unnamed theorems!"
- | TacticAst.Coercion (loc, coercion) ->
- eval_coercion status coercion
- | TacticAst.Alias (loc, spec) ->
- match spec with
- | TacticAst.Ident_alias (id,uri) ->
- {status with aliases =
- DisambiguateTypes.Environment.add
- (DisambiguateTypes.Id id)
- ("boh?",(fun _ _ _ -> CicUtil.term_of_uri uri))
- status.aliases }
- | TacticAst.Symbol_alias (symb, instance, desc) ->
- {status with aliases =
- DisambiguateTypes.Environment.add
- (DisambiguateTypes.Symbol (symb,instance))
- (DisambiguateChoices.lookup_symbol_by_dsc symb desc)
- status.aliases }
- | TacticAst.Number_alias (instance,desc) ->
- {status with aliases =
- DisambiguateTypes.Environment.add
- (DisambiguateTypes.Num instance)
- (DisambiguateChoices.lookup_num_by_dsc desc) status.aliases }
-
-let eval_executable status ex =
- match ex with
- | TacticAst.Tactical (_, tac) -> eval_tactical status tac
- | TacticAst.Command (_, cmd) -> eval_command status cmd
- | TacticAst.Macro (_, mac) ->
- command_error (sprintf "The macro %s can't be in a script"
- (TacticAstPp.pp_macro_cic mac))
-
-let eval_comment status c = status
-
-let eval status st =
- match st with
- | TacticAst.Executable (_,ex) -> eval_executable status ex
- | TacticAst.Comment (_,c) -> eval_comment status c
-
-let disambiguate_term status term =
- let (aliases, metasenv, cic, _) =
- match
- MatitaDisambiguator.disambiguate_term ~dbd:(MatitaDb.instance ())
- ~aliases:(status.aliases) ~context:(MatitaMisc.get_proof_context status)
- ~metasenv:(MatitaMisc.get_proof_metasenv status) term
- with
- | [x] -> x
- | _ -> assert false
- in
- let proof_status =
- match status.proof_status with
- | No_proof -> Intermediate metasenv
- | Incomplete_proof ((uri, _, proof, ty), goal) ->
- Incomplete_proof ((uri, metasenv, proof, ty), goal)
- | Intermediate _ -> Intermediate metasenv
- | Proof _ -> assert false
- in
- let status =
- { status with
- aliases = aliases;
- proof_status = proof_status }
- in
- status, cic
-
-let disambiguate_terms status terms =
- let term = CicAst.pack terms in
- let status, term = disambiguate_term status term in
- status, CicUtil.unpack term
-
-let disambiguate_tactic status = function
- | TacticAst.Transitivity (loc, term) ->
- let status, cic = disambiguate_term status term in
- status, TacticAst.Transitivity (loc, cic)
- | TacticAst.Apply (loc, term) ->
- let status, cic = disambiguate_term status term in
- status, TacticAst.Apply (loc, cic)
- | TacticAst.Absurd (loc, term) ->
- let status, cic = disambiguate_term status term in
- status, TacticAst.Absurd (loc, cic)
- | TacticAst.Exact (loc, term) ->
- let status, cic = disambiguate_term status term in
- status, TacticAst.Exact (loc, cic)
- | TacticAst.Cut (loc, term) ->
- let status, cic = disambiguate_term status term in
- status, TacticAst.Cut (loc, cic)
- | TacticAst.Elim (loc, term, Some term') ->
- let status, cic1 = disambiguate_term status term in
- let status, cic2 = disambiguate_term status term' in
- status, TacticAst.Elim (loc, cic1, Some cic2)
- | TacticAst.Elim (loc, term, None) ->
- let status, cic = disambiguate_term status term in
- status, TacticAst.Elim (loc, cic, None)
- | TacticAst.ElimType (loc, term) ->
- let status, cic = disambiguate_term status term in
- status, TacticAst.ElimType (loc, cic)
- | TacticAst.Replace (loc, what, with_what) ->
- let status, cic1 = disambiguate_term status what in
- let status, cic2 = disambiguate_term status with_what in
- status, TacticAst.Replace (loc, cic1, cic2)
- | TacticAst.Change (loc, what, with_what, ident) ->
- let status, cic1 = disambiguate_term status what in
- let status, cic2 = disambiguate_term status with_what in
- status, TacticAst.Change (loc, cic1, cic2, ident)
-(*
- (* TODO Zack a lot more of tactics to be implemented here ... *)
- | TacticAst.Change_pattern of 'term pattern * 'term * 'ident option
- | TacticAst.Change of 'term * 'term * 'ident option
- | TacticAst.Decompose of 'ident * 'ident list
- | TacticAst.Discriminate of 'ident
- | TacticAst.Fold of reduction_kind * 'term
- | TacticAst.Injection of 'ident
- | TacticAst.Replace_pattern of 'term pattern * 'term
-*)
- | TacticAst.LetIn (loc,term,name) ->
- let status, term = disambiguate_term status term in
- status, TacticAst.LetIn (loc,term,name)
- | TacticAst.ReduceAt (loc, reduction_kind, ident, path) ->
- let path = Disambiguate.interpretate [] status.aliases path in
- status, TacticAst.ReduceAt(loc, reduction_kind, ident, path)
- | TacticAst.Reduce (loc, reduction_kind, opts) ->
- let status, opts =
- match opts with
- | None -> status, None
- | Some (l,pat) ->
- let status, l =
- List.fold_right (fun t (status,acc) ->
- let status',t' = disambiguate_term status t in
- status', t'::acc)
- l (status,[])
- in
- status, Some (l, pat)
- in
- status, TacticAst.Reduce (loc, reduction_kind, opts)
- | TacticAst.Rewrite (loc,dir,t,ident) ->
- let status, term = disambiguate_term status t in
- status, TacticAst.Rewrite (loc,dir,term,ident)
- | TacticAst.Intros (loc, num, names) ->
- status, TacticAst.Intros (loc, num, names)
- | TacticAst.Auto (loc,num) -> status, TacticAst.Auto (loc,num)
- | TacticAst.Reflexivity loc -> status, TacticAst.Reflexivity loc
- | TacticAst.Assumption loc -> status, TacticAst.Assumption loc
- | TacticAst.Contradiction loc -> status, TacticAst.Contradiction loc
- | TacticAst.Exists loc -> status, TacticAst.Exists loc
- | TacticAst.Fourier loc -> status, TacticAst.Fourier loc
- | TacticAst.Left loc -> status, TacticAst.Left loc
- | TacticAst.Right loc -> status, TacticAst.Right loc
- | TacticAst.Ring loc -> status, TacticAst.Ring loc
- | TacticAst.Split loc -> status, TacticAst.Split loc
- | TacticAst.Symmetry loc -> status, TacticAst.Symmetry loc
- | TacticAst.Goal (loc, g) -> status, TacticAst.Goal (loc, g)
- | x ->
- print_endline ("Not yet implemented:" ^ TacticAstPp.pp_tactic x);
- assert false
-
-let rec disambiguate_tactical status = function
- | TacticAst.Tactic (loc, tactic) ->
- let status, tac = disambiguate_tactic status tactic in
- status, TacticAst.Tactic (loc, tac)
- | TacticAst.Do (loc, num, tactical) ->
- let status, tac = disambiguate_tactical status tactical in
- status, TacticAst.Do (loc, num, tac)
- | TacticAst.Repeat (loc, tactical) ->
- let status, tac = disambiguate_tactical status tactical in
- status, TacticAst.Repeat (loc, tac)
- | TacticAst.Seq (loc, tacticals) -> (* tac1; tac2; ... *)
- let status, tacticals = disambiguate_tacticals status tacticals in
- let tacticals = List.rev tacticals in
- status, TacticAst.Seq (loc, tacticals)
- | TacticAst.Then (loc, tactical, tacticals) -> (* tac; [ tac1 | ... ] *)
- let status, tactical = disambiguate_tactical status tactical in
- let status, tacticals = disambiguate_tacticals status tacticals in
- status, TacticAst.Then (loc, tactical, tacticals)
- | TacticAst.Tries (loc, tacticals) ->
- let status, tacticals = disambiguate_tacticals status tacticals in
- status, TacticAst.Tries (loc, tacticals)
- | TacticAst.Try (loc, tactical) ->
- let status, tactical = disambiguate_tactical status tactical in
- status, TacticAst.Try (loc, tactical)
- | (TacticAst.IdTac _ | TacticAst.Fail _) as tac ->
- status, tac
-
-and disambiguate_tacticals status tacticals =
- let status, tacticals =
- List.fold_left
- (fun (status, tacticals) tactical ->
- let status, tac = disambiguate_tactical status tactical in
- status, tac :: tacticals)
- (status, [])
- tacticals
- in
- let tacticals = List.rev tacticals in
- status, tacticals
-
-let disambiguate_inddef status params indTypes =
- 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 status, terms = disambiguate_terms status !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, _, _, _) :: _ -> MatitaMisc.qualify status 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
- status, (UriManager.uri_of_string uri, (cicIndTypes, [], paramsno))
-
-let disambiguate_command status = function
- | TacticAst.Inductive (loc, params, types) ->
- let (status, (uri, (ind_types, vars, paramsno))) =
- disambiguate_inddef status params types
- in
- let rec mk_list = function
- | 0 -> []
- | n -> ("", Cic.Rel ~-117) :: mk_list (n-1)
- in
- (* once we've built the cic inductive types we no longer need terms
- corresponding to parameters, but we need the leftno, and we encode
- it as the length of dummy_params
- *)
- let dummy_params = mk_list paramsno in
- status, TacticAst.Inductive (loc, dummy_params, ind_types)
- | TacticAst.Theorem (loc, thm_flavour, name, ty, body) ->
- let status, ty = disambiguate_term status ty in
- let status, body =
- match body with
- | None -> status, None
- | Some body ->
- let status, body = disambiguate_term status body in
- status, Some body
- in
- status, TacticAst.Theorem (loc, thm_flavour, name, ty, body)
- | TacticAst.Coercion (loc, term) ->
- let status, term = disambiguate_term status term in
- status, TacticAst.Coercion (loc,term)
- | (TacticAst.Set _ | TacticAst.Qed _) as cmd ->
- status, cmd
- | TacticAst.Alias _ as x -> status, x
-
-let disambiguate_executable status ex =
- match ex with
- | TacticAst.Tactical (loc, tac) ->
- let status, tac = disambiguate_tactical status tac in
- status, (TacticAst.Tactical (loc, tac))
- | TacticAst.Command (loc, cmd) ->
- let status, cmd = disambiguate_command status cmd in
- status, (TacticAst.Command (loc, cmd))
- | TacticAst.Macro (_, mac) ->
- command_error
- (sprintf ("The engine is not allowed to disambiguate any macro, "^^
- "in particular %s") (TacticAstPp.pp_macro_ast mac))
-
-let disambiguate_comment status c =
- match c with
- | TacticAst.Note (loc,n) -> status, TacticAst.Note (loc,n)
- | TacticAst.Code (loc,ex) ->
- let status, ex = disambiguate_executable status ex in
- status, TacticAst.Code (loc,ex)
-
-let disambiguate_statement status statement =
- match statement with
- | TacticAst.Comment (loc,c) ->
- let status, c = disambiguate_comment status c in
- status, TacticAst.Comment (loc,c)
- | TacticAst.Executable (loc,ex) ->
- let status, ex = disambiguate_executable status ex in
- status, TacticAst.Executable (loc,ex)
-
-let eval_ast status ast =
- let status,st = disambiguate_statement status ast in
- (* this disambiguation step should be deferred to support tacticals *)
- eval status st
-
-let eval_from_stream status str cb =
- let stl = CicTextualParser2.parse_statements str in
- List.fold_left
- (fun status ast -> cb status ast;eval_ast status ast) status
- stl
-
-let eval_string status str =
- eval_from_stream status (Stream.of_string str) (fun _ _ -> ())
-
-let default_options () =
- let options =
- StringMap.add "baseuri"
- (String
- (Helm_registry.get "matita.baseuri" ^ Helm_registry.get "matita.owner"))
- no_options
- in
- let options =
- StringMap.add "basedir"
- (String (Helm_registry.get "matita.basedir" ))
- options
- in
- options
-
-let initial_status =
- lazy {
- aliases = DisambiguateTypes.empty_environment;
- proof_status = No_proof;
- options = default_options ();
- objects = [];
- }
-