X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=helm%2Focaml%2Ftactics%2FvariousTactics.ml;h=be08c4d9e9b69bf5114ba1f4c62d6384ea8a312e;hb=fdd8107cc53f5e862004aa5fcd48593ee5634234;hp=f8c9cfa94dd409b67f65cbbfe332681473978eef;hpb=6150b8ef905aaea17b47ff466c067054f976cd8f;p=helm.git diff --git a/helm/ocaml/tactics/variousTactics.ml b/helm/ocaml/tactics/variousTactics.ml index f8c9cfa94..be08c4d9e 100644 --- a/helm/ocaml/tactics/variousTactics.ml +++ b/helm/ocaml/tactics/variousTactics.ml @@ -23,177 +23,42 @@ * http://cs.unibo.it/helm/. *) - -(* Da rimuovere, solo per debug*) -let print_context ctx = - let print_name = - function - Cic.Name n -> n - | Cic.Anonymous -> "_" - in - List.fold_right - (fun i (output,context) -> - let (newoutput,context') = - match i with - Some (n,Cic.Decl t) -> - print_name n ^ ":" ^ CicPp.pp t context ^ "\n", (Some n)::context - | Some (n,Cic.Def (t,None)) -> - print_name n ^ ":=" ^ CicPp.pp t context ^ "\n", (Some n)::context - | None -> - "_ ?= _\n", None::context - | Some (_,Cic.Def (_,Some _)) -> assert false - in - output^newoutput,context' - ) ctx ("",[]) - ;; - - - - - -let search_theorems_in_context status = - let (proof, goal) = status in - let module C = Cic in - let module R = CicReduction in - let module S = CicSubstitution in - prerr_endline "Entro in search_context"; - let _,metasenv,_,_ = proof in - let _,context,ty = CicUtil.lookup_meta goal metasenv in - let rec find n = function - [] -> [] - | hd::tl -> - let res = - try - Some (PrimitiveTactics.apply_tac status ~term:(C.Rel n)) - with - ProofEngineTypes.Fail _ -> None in - (match res with - Some res -> res::(find (n+1) tl) - | None -> find (n+1) tl) - in - try - let res = find 1 context in - prerr_endline "Ho finito context"; - res - with Failure s -> - prerr_endline ("SIAM QUI = " ^ s); [] -;; - -exception NotAProposition;; -exception NotApplicableTheorem;; -exception MaxDepth;; - -let depth = 3;; - -let rec auto_tac_aux mqi_handle level proof goal = -prerr_endline ("Entro in Auto_rec; level = " ^ (string_of_int level)); -if level = 0 then - (* (proof, [goal]) *) - (prerr_endline ("MaxDepth"); - raise MaxDepth) -else - (* let us verify that the metavariable is still an open goal -- - it could have been closed by closing other goals -- and that - it is of sort Prop *) - let _,metasenv,_,_ = proof in - let meta_inf = - (try - let (_, ey ,ty) = CicUtil.lookup_meta goal metasenv in - Some (ey, ty) - with _ -> None) in - match meta_inf with - Some (ey, ty) -> - prerr_endline ("CURRENT GOAL = " ^ (CicPp.ppterm ty)); - prerr_endline ("CURRENT HYP = " ^ (fst (print_context ey))); - (* - let time1 = Unix.gettimeofday() in - let _, all_paths = NewConstraints.prefixes 5 ty in - let time2 = Unix.gettimeofday() in - prerr_endline - (Printf.sprintf "TEMPO DI CALCOLO = %1.3f" (time2 -. time1) ); - prerr_endline - ("ALL PATHS: n = " ^ string_of_int - (List.length all_paths)); - prerr_endline (NewConstraints.pp_prefixes all_paths); - *) - (* if the goal does not have a sort Prop we return the - current proof and a list containing the goal *) - let ty_sort = CicTypeChecker.type_of_aux' metasenv ey ty in - if CicReduction.are_convertible - ey (Cic.Sort Cic.Prop) ty_sort then - (* sort Prop *) - (* choices is a list of pairs proof and goallist *) - let choices = - (search_theorems_in_context (proof,goal))@ - (TacticChaser.searchTheorems mqi_handle (proof,goal)) - in - let rec try_choices = function - [] -> raise NotApplicableTheorem - | (proof,goallist)::tl -> -prerr_endline ("GOALLIST = " ^ string_of_int (List.length goallist)); - (try - List.fold_left - (fun proof goal -> - auto_tac_aux mqi_handle (level-1) proof goal) - proof goallist - with - | MaxDepth - | NotApplicableTheorem - | NotAProposition -> - try_choices tl) in - try_choices choices - else - (* CUT AND PASTE DI PROVA !! *) - let choices = - (search_theorems_in_context (proof,goal))@ - (TacticChaser.searchTheorems mqi_handle (proof,goal)) - in - let rec try_choices = function - [] -> raise NotApplicableTheorem - | (proof,[])::tl -> proof - | _::tl -> try_choices tl in - try_choices choices - (* raise NotAProposition *) - | None -> proof -;; - -let auto_tac mqi_handle (proof,goal) = - prerr_endline "Entro in Auto"; - try - let proof = auto_tac_aux mqi_handle depth proof goal in -prerr_endline "AUTO_TAC HA FINITO"; - (proof,[]) - with - | MaxDepth -> assert false (* this should happens only if depth is 0 above *) - | NotApplicableTheorem -> - prerr_endline("No applicable theorem"); - raise (ProofEngineTypes.Fail "No Applicable theorem");; (* TODO se ce n'e' piu' di una, prende la prima che trova... sarebbe meglio chiedere: find dovrebbe restituire una lista di hyp (?) da passare all'utonto con una funzione di callback che restituisce la (sola) hyp da applicare *) -let assumption_tac status = +let assumption_tac = + let module PET = ProofEngineTypes in + let assumption_tac status = let (proof, goal) = status in let module C = Cic in let module R = CicReduction in let module S = CicSubstitution in - let _,metasenv,_,_ = proof in - let _,context,ty = CicUtil.lookup_meta goal metasenv in - let rec find n = function - hd::tl -> - (match hd with + let module PT = PrimitiveTactics in + let _,metasenv,_,_ = proof in + let _,context,ty = CicUtil.lookup_meta goal metasenv in + let rec find n = function + hd::tl -> + (match hd with (Some (_, C.Decl t)) when - (R.are_convertible context (S.lift n t) ty) -> n + fst (R.are_convertible context (S.lift n t) ty + CicUniv.empty_ugraph) -> n | (Some (_, C.Def (_,Some ty'))) when - (R.are_convertible context ty' ty) -> n - | (Some (_, C.Def (t,None))) when - (R.are_convertible context - (CicTypeChecker.type_of_aux' metasenv context (S.lift n t)) ty) -> n + fst (R.are_convertible context (S.lift n ty') ty + CicUniv.empty_ugraph) -> n + | (Some (_, C.Def (t,None))) -> + let ty_t, u = (* TASSI: FIXME *) + CicTypeChecker.type_of_aux' metasenv context (S.lift n t) + CicUniv.empty_ugraph in + let b,_ = R.are_convertible context ty_t ty u in + if b then n else find (n+1) tl | _ -> find (n+1) tl ) - | [] -> raise (ProofEngineTypes.Fail "Assumption: No such assumption") - in PrimitiveTactics.apply_tac status ~term:(C.Rel (find 1 context)) + | [] -> raise (PET.Fail "Assumption: No such assumption") + in PET.apply_tactic (PT.apply_tac ~term:(C.Rel (find 1 context))) status + in + PET.mk_tactic assumption_tac ;; (* ANCORA DA DEBUGGARE *) @@ -204,42 +69,48 @@ exception AllSelectedTermsMustBeConvertible;; e li aggiunga nel context, poi si conta la lunghezza di questo nuovo contesto e si lifta di tot... COSA SIGNIFICA TUTTO CIO'?????? *) -let generalize_tac - ?(mk_fresh_name_callback = FreshNamesGenerator.mk_fresh_name) - terms status -= - let (proof, goal) = status in - let module C = Cic in - let module P = PrimitiveTactics in - let module T = Tacticals in - let _,metasenv,_,_ = proof in - let _,context,ty = CicUtil.lookup_meta goal metasenv in - let typ = - match terms with - [] -> assert false - | he::tl -> - (* We need to check that all the convertibility of all the terms *) - List.iter - (function t -> - if not (CicReduction.are_convertible context he t) then - raise AllSelectedTermsMustBeConvertible - ) tl ; - (CicTypeChecker.type_of_aux' metasenv context he) - in - T.thens - ~start: - (P.cut_tac - (C.Prod( - (mk_fresh_name_callback metasenv context C.Anonymous typ), - typ, - (ProofEngineReduction.replace_lifting_csc 1 - ~equality:(==) - ~what:terms - ~with_what:(List.map (function _ -> C.Rel 1) terms) - ~where:ty) - ))) - ~continuations: [(P.apply_tac ~term:(C.Rel 1)) ; T.id_tac] - status +let generalize_tac + ?(mk_fresh_name_callback = FreshNamesGenerator.mk_fresh_name ~subst:[]) terms + = + let module PET = ProofEngineTypes in + let generalize_tac mk_fresh_name_callback terms status = + let (proof, goal) = status in + let module C = Cic in + let module P = PrimitiveTactics in + let module T = Tacticals in + let _,metasenv,_,_ = proof in + let _,context,ty = CicUtil.lookup_meta goal metasenv in + let typ,_ = + match terms with + [] -> assert false + | he::tl -> + (* We need to check that all the convertibility of all the terms *) + let u = List.fold_left ( (* TASSI: FIXME *) + fun u t -> + let b,u1 = CicReduction.are_convertible context he t u in + if not b then + raise AllSelectedTermsMustBeConvertible + else + u1) CicUniv.empty_ugraph tl in + (CicTypeChecker.type_of_aux' metasenv context he u) + in + PET.apply_tactic + (T.thens + ~start: + (P.cut_tac + (C.Prod( + (mk_fresh_name_callback metasenv context C.Anonymous ~typ:typ), + typ, + (ProofEngineReduction.replace_lifting_csc 1 + ~equality:(==) + ~what:terms + ~with_what:(List.map (function _ -> C.Rel 1) terms) + ~where:ty) + ))) + ~continuations: [(P.apply_tac ~term:(C.Rel 1)) ; T.id_tac]) + status + in + PET.mk_tactic (generalize_tac mk_fresh_name_callback terms) ;;