X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=helm%2Focaml%2Ftactics%2FeliminationTactics.ml;h=b6141094fc2c7cbd2cb8be8c2e2cf34131b1fe2f;hb=7bf5d654c18fee290e7e402800543fe40223c04b;hp=73d1771ff6d0002c0ece8743c09d25fcfac72dc0;hpb=a3ef256812f0397a871fe8e69c125dfd89e62dce;p=helm.git diff --git a/helm/ocaml/tactics/eliminationTactics.ml b/helm/ocaml/tactics/eliminationTactics.ml index 73d1771ff..b6141094f 100644 --- a/helm/ocaml/tactics/eliminationTactics.ml +++ b/helm/ocaml/tactics/eliminationTactics.ml @@ -23,6 +23,18 @@ * http://cs.unibo.it/helm/. *) +(** DEBUGGING *) + + (** perform debugging output? *) +let debug = false + + (** debugging print *) +let warn s = + if debug then + prerr_endline ("DECOMPOSE: " ^ s) + + + (* let induction_tac ~term ~status:((proof,goal) as status) = let module C = Cic in @@ -54,20 +66,18 @@ let elim_type_tac ~term ~status = ~status ;; -(* Questa era gia' in ring.ml!!!! NB: adesso in ring non c'e' piu' :-) -let elim_type_tac ~term ~status = - warn "in Ring.elim_type_tac"; - Tacticals.thens ~start:(cut_tac ~term) - ~continuations:[elim_simpl_intros_tac ~term:(Cic.Rel 1) ; Tacticals.id_tac] ~status -*) +(* Decompose related stuff *) -(* PROVE DI DECOMPOSE *) -(* guardare quali sono i tipi induttivi decomponibili presenti in -profondita' nel term; chiamare una funzione di call-back passando questa -lista e ritornando la lista di termini che l'utente vuole decomporre; -decomporre. *) +exception InteractiveUserUriChoiceNotRegistered +let interactive_user_uri_choice = + (ref (fun ~selection_mode -> raise InteractiveUserUriChoiceNotRegistered) : + (selection_mode:[`SINGLE | `EXTENDED] -> + ?ok:string -> + ?enable_button_for_non_vars:bool -> + title:string -> msg:string -> string list -> string list) ref) +;; exception IllFormedUri of string @@ -96,9 +106,31 @@ let cic_textual_parser_uri_of_string uri' = _ -> raise (IllFormedUri uri') ;; -let decompose_tac ?(uris_choice_callback=(function l -> l)) term - ~status:((proof,goal) as status) -= +(* +let constructor_uri_of_string uri = + match cic_textual_parser_uri_of_string uri with + CicTextualParser0.IndTyUri (uri,typeno) -> (uri,typeno,[]) + | _ -> assert false +;; + +let call_back uris = +(* N.B.: nella finestra c'e' un campo "nessuno deei precedenti, prova questo" che non ha senso? *) +(* N.B.: in questo passaggio perdo l'informazione su exp_named_subst !!!! *) +(* domanda: due triple possono essere diverse solo per avere exp_named_subst diverse?? *) + let module U = UriManager in + List.map + (constructor_uri_of_string) + (!interactive_user_uri_choice + ~selection_mode:`EXTENDED ~ok:"Ok" ~enable_button_for_non_vars:false + ~title:"Decompose" ~msg:"Please, select the Inductive Types to decompose" + (List.map + (function (uri,typeno,_) -> U.string_of_uri uri ^ "#1/" ^ string_of_int (typeno+1)) + uris) + ) +;; +*) + +let decompose_tac ?(uris_choice_callback=(function l -> l)) term ~status:((proof,goal) as status) = let module C = Cic in let module R = CicReduction in let module P = PrimitiveTactics in @@ -107,11 +139,10 @@ let decompose_tac ?(uris_choice_callback=(function l -> l)) term let _,metasenv,_,_ = proof in let _,context,ty = List.find (function (m,_,_) -> m=goal) metasenv in let old_context_len = List.length context in -(* let nr_of_hyp_still_to_elim = ref 1 in *) let termty = CicTypeChecker.type_of_aux' metasenv context term in let rec make_list termty = -(* altamente inefficente? *) + (* N.B.: altamente inefficente? *) let rec search_inductive_types urilist termty = (* search in term the Inductive Types and return a list of uris as triples like this: (uri,typeno,exp_named_subst) *) match termty with @@ -144,18 +175,18 @@ let decompose_tac ?(uris_choice_callback=(function l -> l)) term uris_choice_callback (make_list termty) in let rec elim_clear_tac ~term' ~nr_of_hyp_still_to_elim ~status:((proof,goal) as status) = -prerr_endline ("%%%%%%% nr_of_hyp_still_to_elim=" ^ (string_of_int nr_of_hyp_still_to_elim)); + warn ("nr_of_hyp_still_to_elim=" ^ (string_of_int nr_of_hyp_still_to_elim)); if nr_of_hyp_still_to_elim <> 0 then let _,metasenv,_,_ = proof in let _,context,_ = List.find (function (m,_,_) -> m=goal) metasenv in let old_context_len = List.length context in let termty = CicTypeChecker.type_of_aux' metasenv context term' in -prerr_endline ("%%%%%%% elim_clear termty= " ^ CicPp.ppterm termty); + warn ("elim_clear termty= " ^ CicPp.ppterm termty); match termty with C.MutInd (uri,typeno,exp_named_subst) | C.Appl((C.MutInd (uri,typeno,exp_named_subst))::_) when (List.mem (uri,typeno,exp_named_subst) urilist) -> -prerr_endline ("%%%%%%% elim " ^ CicPp.ppterm termty); + warn ("elim " ^ CicPp.ppterm termty); T.then_ ~start:(P.elim_intros_simpl_tac ~term:term') ~continuation:( @@ -164,11 +195,11 @@ prerr_endline ("%%%%%%% elim " ^ CicPp.ppterm termty); let _,metasenv,_,_ = proof in let _,context,_ = List.find (function (m,_,_) -> m=goal) metasenv in let new_context_len = List.length context in -prerr_endline ("%%%%%%% newcon=" ^ (string_of_int new_context_len) ^ " & oldcon=" ^ (string_of_int old_context_len) ^ " & old_nr_of_hyp=" ^ (string_of_int nr_of_hyp_still_to_elim)); + warn ("newcon=" ^ (string_of_int new_context_len) ^ " & oldcon=" ^ (string_of_int old_context_len) ^ " & old_nr_of_hyp=" ^ (string_of_int nr_of_hyp_still_to_elim)); let new_nr_of_hyp_still_to_elim = nr_of_hyp_still_to_elim + (new_context_len - old_context_len) - 1 in T.then_ ~start:( - if (term'==term) (* this is the first application of elim: there's no need to clear the hyp *) + if (term'==term) (* if it's the first application of elim, there's no need to clear the hyp *) then begin prerr_endline ("%%%%%%% no clear"); T.id_tac end else begin prerr_endline ("%%%%%%% clear " ^ (string_of_int (new_nr_of_hyp_still_to_elim))); (S.clear ~hyp:(List.nth context (new_nr_of_hyp_still_to_elim))) end) ~continuation:(elim_clear_tac ~term':(C.Rel new_nr_of_hyp_still_to_elim) ~nr_of_hyp_still_to_elim:new_nr_of_hyp_still_to_elim) @@ -177,15 +208,13 @@ prerr_endline ("%%%%%%% newcon=" ^ (string_of_int new_context_len) ^ " & oldcon= ~status | _ -> let new_nr_of_hyp_still_to_elim = nr_of_hyp_still_to_elim - 1 in -prerr_endline ("%%%%%%% fail; hyp=" ^ (string_of_int new_nr_of_hyp_still_to_elim)); + warn ("fail; hyp=" ^ (string_of_int new_nr_of_hyp_still_to_elim)); elim_clear_tac ~term':(C.Rel new_nr_of_hyp_still_to_elim) ~nr_of_hyp_still_to_elim:new_nr_of_hyp_still_to_elim ~status - else (* raise (ProofEngineTypes.Fail "Decomopse: finished decomposing"); *) T.id_tac ~status + else (* no hyp to elim left in this goal *) + T.id_tac ~status in -(* T.repeat_tactic ~tactic: *) - (elim_clear_tac ~term':term ~nr_of_hyp_still_to_elim:1) - ~status + elim_clear_tac ~term':term ~nr_of_hyp_still_to_elim:1 ~status ;; -