author | wenzelm |
Fri, 21 Oct 2005 18:14:38 +0200 | |
changeset 17959 | 8db36a108213 |
parent 17840 | 11bcd77cfa22 |
child 17985 | d5d576b72371 |
permissions | -rw-r--r-- |
2276 | 1 |
(* Title: HOLCF/domain/theorems.ML |
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ID: $Id$ |
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Author: David von Oheimb |
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New proofs/tactics by Brian Huffman |
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Proof generator for domain section. |
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*) |
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val HOLCF_ss = simpset(); |
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structure Domain_Theorems = struct |
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local |
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open Domain_Library; |
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infixr 0 ===>;infixr 0 ==>;infix 0 == ; |
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infix 1 ===; infix 1 ~= ; infix 1 <<; infix 1 ~<<; |
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infix 9 ` ; infix 9 `% ; infix 9 `%%; infixr 9 oo; |
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(* ----- general proof facilities ------------------------------------------- *) |
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fun inferT sg pre_tm = |
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#1 (Sign.infer_types (Sign.pp sg) sg (K NONE) (K NONE) [] true ([pre_tm],propT)); |
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fun pg'' thy defs t = let val sg = sign_of thy; |
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val ct = Thm.cterm_of sg (inferT sg t); |
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in OldGoals.prove_goalw_cterm defs ct end; |
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fun pg' thy defs t tacsf=pg'' thy defs t (fn [] => tacsf |
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| prems=> (cut_facts_tac prems 1)::tacsf); |
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fun case_UU_tac rews i v = case_tac (v^"=UU") i THEN |
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asm_simp_tac (HOLCF_ss addsimps rews) i; |
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val chain_tac = REPEAT_DETERM o resolve_tac |
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[chain_iterate, ch2ch_Rep_CFunR, ch2ch_Rep_CFunL]; |
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(* ----- general proofs ----------------------------------------------------- *) |
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val all2E = prove_goal HOL.thy "[| !x y . P x y; P x y ==> R |] ==> R" |
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(fn prems =>[ |
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resolve_tac prems 1, |
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cut_facts_tac prems 1, |
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fast_tac HOL_cs 1]); |
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val dist_eqI = prove_goal Porder.thy "!!x::'a::po. ~ x << y ==> x ~= y" |
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(fn prems => [ |
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(blast_tac (claset() addDs [antisym_less_inverse]) 1)]); |
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(* |
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infixr 0 y; |
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val b = 0; |
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fun _ y t = by t; |
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fun g defs t = let val sg = sign_of thy; |
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val ct = Thm.cterm_of sg (inferT sg t); |
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in goalw_cterm defs ct end; |
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*) |
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in |
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||
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fun theorems (((dname,_),cons) : eq, eqs : eq list) thy = |
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let |
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val dummy = writeln ("Proving isomorphism properties of domain "^dname^" ..."); |
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val pg = pg' thy; |
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(* ----- getting the axioms and definitions --------------------------------- *) |
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local fun ga s dn = get_thm thy (Name (dn ^ "." ^ s)) in |
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val ax_abs_iso = ga "abs_iso" dname; |
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val ax_rep_iso = ga "rep_iso" dname; |
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val ax_when_def = ga "when_def" dname; |
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val axs_con_def = map (fn (con,_) => ga (extern_name con^"_def") dname) cons; |
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val axs_dis_def = map (fn (con,_) => ga ( dis_name con^"_def") dname) cons; |
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val axs_mat_def = map (fn (con,_) => ga ( mat_name con^"_def") dname) cons; |
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val axs_sel_def = List.concat(map (fn (_,args) => List.mapPartial (fn arg => |
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Option.map (fn sel => ga (sel^"_def") dname) (sel_of arg)) args) |
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cons); |
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val ax_copy_def = ga "copy_def" dname; |
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end; (* local *) |
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(* ----- theorems concerning the isomorphism -------------------------------- *) |
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val dc_abs = %%:(dname^"_abs"); |
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val dc_rep = %%:(dname^"_rep"); |
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val dc_copy = %%:(dname^"_copy"); |
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val x_name = "x"; |
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val iso_locale = iso_intro OF [ax_abs_iso, ax_rep_iso]; |
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val abs_strict = ax_rep_iso RS (allI RS retraction_strict); |
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val rep_strict = ax_abs_iso RS (allI RS retraction_strict); |
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val abs_defin' = iso_locale RS iso_abs_defin'; |
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val rep_defin' = iso_locale RS iso_rep_defin'; |
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val iso_rews = map standard [ax_abs_iso,ax_rep_iso,abs_strict,rep_strict]; |
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(* ----- generating beta reduction rules from definitions-------------------- *) |
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local |
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fun arglist (Const _ $ Abs (s,_,t)) = let |
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val (vars,body) = arglist t |
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in (s :: vars, body) end |
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| arglist t = ([],t); |
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fun bind_fun vars t = Library.foldr mk_All (vars,t); |
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fun bound_vars 0 = [] | bound_vars i = (Bound (i-1) :: bound_vars (i-1)); |
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in |
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fun appl_of_def def = let |
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val (_ $ con $ lam) = concl_of def; |
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val (vars, rhs) = arglist lam; |
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val lhs = mk_cRep_CFun (con, bound_vars (length vars)); |
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val appl = bind_fun vars (lhs == rhs); |
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val cs = ContProc.cont_thms lam; |
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val betas = map (fn c => mk_meta_eq (c RS beta_cfun)) cs; |
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in pg (def::betas) appl [rtac reflexive_thm 1] end; |
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end; |
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val when_appl = appl_of_def ax_when_def; |
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val con_appls = map appl_of_def axs_con_def; |
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local |
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fun arg2typ n arg = let val t = TVar (("'a",n),pcpoS) |
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in (n+1, if is_lazy arg then mk_uT t else t) end; |
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fun args2typ n [] = (n,oneT) |
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| args2typ n [arg] = arg2typ n arg |
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| args2typ n (arg::args) = let val (n1,t1) = arg2typ n arg; |
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val (n2,t2) = args2typ n1 args |
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in (n2, mk_sprodT (t1, t2)) end; |
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fun cons2typ n [] = (n,oneT) |
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| cons2typ n [con] = args2typ n (snd con) |
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| cons2typ n (con::cons) = let val (n1,t1) = args2typ n (snd con); |
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val (n2,t2) = cons2typ n1 cons |
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in (n2, mk_ssumT (t1, t2)) end; |
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in |
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fun cons2ctyp cons = ctyp_of (sign_of thy) (snd (cons2typ 1 cons)); |
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end; |
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local |
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val iso_swap = iso_locale RS iso_iso_swap; |
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fun one_con (con,args) = let val vns = map vname args in |
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Library.foldr mk_ex (vns, foldr1 mk_conj ((%:x_name === con_app2 con %: vns):: |
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map (defined o %:) (nonlazy args))) end; |
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val exh = foldr1 mk_disj ((%:x_name===UU)::map one_con cons); |
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val my_ctyp = cons2ctyp cons; |
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val thm1 = instantiate' [SOME my_ctyp] [] exh_start; |
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val thm2 = rewrite_rule (map mk_meta_eq ex_defined_iffs) thm1; |
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val thm3 = rewrite_rule [mk_meta_eq conj_assoc] thm2; |
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in |
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val exhaust = pg con_appls (mk_trp exh)[ |
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(* first 3 rules replace "x = UU \/ P" with "rep$x = UU \/ P" *) |
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rtac disjE 1, |
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etac (rep_defin' RS disjI1) 2, |
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etac disjI2 2, |
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rewrite_goals_tac [mk_meta_eq iso_swap], |
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rtac thm3 1]; |
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val casedist = standard (rewrite_rule exh_casedists (exhaust RS exh_casedist0)); |
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end; |
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local |
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fun bind_fun t = Library.foldr mk_All (when_funs cons,t); |
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fun bound_fun i _ = Bound (length cons - i); |
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val when_app = Library.foldl (op `) (%%:(dname^"_when"), mapn bound_fun 1 cons); |
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in |
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val when_strict = pg [when_appl, mk_meta_eq rep_strict] |
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(bind_fun(mk_trp(strict when_app))) |
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[resolve_tac [sscase1,ssplit1,strictify1] 1]; |
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val when_apps = let fun one_when n (con,args) = pg (when_appl :: con_appls) |
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(bind_fun (lift_defined %: (nonlazy args, |
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mk_trp(when_app`(con_app con args) === |
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mk_cRep_CFun(bound_fun n 0,map %# args)))))[ |
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asm_simp_tac (HOLCF_ss addsimps [ax_abs_iso]) 1]; |
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in mapn one_when 1 cons end; |
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end; |
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val when_rews = when_strict::when_apps; |
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(* ----- theorems concerning the constructors, discriminators and selectors - *) |
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|
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val dis_rews = let |
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val dis_stricts = map (fn (con,_) => pg axs_dis_def (mk_trp( |
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strict(%%:(dis_name con)))) [ |
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rtac when_strict 1]) cons; |
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val dis_apps = let fun one_dis c (con,args)= pg axs_dis_def |
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(lift_defined %: (nonlazy args, |
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(mk_trp((%%:(dis_name c))`(con_app con args) === |
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%%:(if con=c then TT_N else FF_N))))) [ |
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asm_simp_tac (HOLCF_ss addsimps when_rews) 1]; |
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in List.concat(map (fn (c,_) => map (one_dis c) cons) cons) end; |
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val dis_defins = map (fn (con,args) => pg [] (defined(%:x_name) ==> |
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defined(%%:(dis_name con)`%x_name)) [ |
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rtac casedist 1, |
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contr_tac 1, |
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DETERM_UNTIL_SOLVED (CHANGED(asm_simp_tac |
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(HOLCF_ss addsimps dis_apps) 1))]) cons; |
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in dis_stricts @ dis_defins @ dis_apps end; |
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|
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val mat_rews = let |
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val mat_stricts = map (fn (con,_) => pg axs_mat_def (mk_trp( |
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strict(%%:(mat_name con)))) [ |
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rtac when_strict 1]) cons; |
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val mat_apps = let fun one_mat c (con,args)= pg axs_mat_def |
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(lift_defined %: (nonlazy args, |
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(mk_trp((%%:(mat_name c))`(con_app con args) === |
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(if con=c |
200 |
then %%:returnN`(mk_ctuple (map %# args)) |
|
201 |
else %%:failN))))) |
|
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[asm_simp_tac (HOLCF_ss addsimps when_rews) 1]; |
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in List.concat(map (fn (c,_) => map (one_mat c) cons) cons) end; |
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in mat_stricts @ mat_apps end; |
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205 |
|
15570 | 206 |
val con_stricts = List.concat(map (fn (con,args) => map (fn vn => |
15742 | 207 |
pg con_appls |
2033 | 208 |
(mk_trp(con_app2 con (fn arg => if vname arg = vn |
209 |
then UU else %# arg) args === UU))[ |
|
210 |
asm_simp_tac (HOLCF_ss addsimps [abs_strict]) 1] |
|
211 |
) (nonlazy args)) cons); |
|
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val con_defins = map (fn (con,args) => pg [] |
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(lift_defined %: (nonlazy args, |
2033 | 214 |
mk_trp(defined(con_app con args)))) ([ |
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215 |
rtac rev_contrapos 1, |
2033 | 216 |
eres_inst_tac [("f",dis_name con)] cfun_arg_cong 1, |
217 |
asm_simp_tac (HOLCF_ss addsimps dis_rews) 1] )) cons; |
|
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val con_rews = con_stricts @ con_defins; |
219 |
||
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220 |
val con_compacts = |
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221 |
let |
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val rules = [compact_sinl, compact_sinr, compact_spair, compact_up, compact_ONE]; |
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fun one_compact (con,args) = pg con_appls |
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(lift (fn x => %%:compactN $ %:(vname x)) (args, mk_trp(%%:compactN $ (con_app con args)))) |
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[rtac (iso_locale RS iso_compact_abs) 1, REPEAT (resolve_tac rules 1 ORELSE atac 1)]; |
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in map one_compact cons end; |
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|
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val sel_stricts = let fun one_sel sel = pg axs_sel_def (mk_trp(strict(%%:sel))) [ |
2033 | 229 |
simp_tac (HOLCF_ss addsimps when_rews) 1]; |
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230 |
in List.concat(map (fn (_,args) => List.mapPartial (fn arg => Option.map one_sel (sel_of arg)) args) cons) end; |
1274 | 231 |
val sel_apps = let fun one_sel c n sel = map (fn (con,args) => |
2033 | 232 |
let val nlas = nonlazy args; |
233 |
val vns = map vname args; |
|
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in pg axs_sel_def (lift_defined %: |
15570 | 235 |
(List.filter (fn v => con=c andalso (v<>List.nth(vns,n))) nlas, |
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|
236 |
mk_trp((%%:sel)`(con_app con args) === |
15570 | 237 |
(if con=c then %:(List.nth(vns,n)) else UU)))) |
2033 | 238 |
( (if con=c then [] |
239 |
else map(case_UU_tac(when_rews@con_stricts)1) nlas) |
|
15570 | 240 |
@(if con=c andalso ((List.nth(vns,n)) mem nlas) |
2033 | 241 |
then[case_UU_tac (when_rews @ con_stricts) 1 |
15570 | 242 |
(List.nth(vns,n))] else []) |
2033 | 243 |
@ [asm_simp_tac(HOLCF_ss addsimps when_rews)1])end) cons; |
15570 | 244 |
in List.concat(map (fn (c,args) => |
16842 | 245 |
List.concat(List.mapPartial I (mapn (fn n => fn arg => Option.map (one_sel c n) (sel_of arg)) 0 args))) cons) end; |
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246 |
val sel_defins = if length cons=1 then List.mapPartial (fn arg => Option.map (fn sel => pg [](defined(%:x_name)==> |
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247 |
defined(%%:sel`%x_name)) [ |
4043 | 248 |
rtac casedist 1, |
2033 | 249 |
contr_tac 1, |
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250 |
DETERM_UNTIL_SOLVED (CHANGED(asm_simp_tac |
16394
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|
251 |
(HOLCF_ss addsimps sel_apps) 1))])(sel_of arg)) |
2033 | 252 |
(filter_out is_lazy (snd(hd cons))) else []; |
1274 | 253 |
val sel_rews = sel_stricts @ sel_defins @ sel_apps; |
254 |
||
255 |
val distincts_le = let |
|
256 |
fun dist (con1, args1) (con2, args2) = pg [] |
|
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257 |
(lift_defined %: ((nonlazy args1), |
2033 | 258 |
(mk_trp (con_app con1 args1 ~<< con_app con2 args2))))([ |
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259 |
rtac rev_contrapos 1, |
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260 |
eres_inst_tac[("f",dis_name con1)] monofun_cfun_arg 1] |
2033 | 261 |
@map(case_UU_tac (con_stricts @ dis_rews)1)(nonlazy args2) |
262 |
@[asm_simp_tac (HOLCF_ss addsimps dis_rews) 1]); |
|
1274 | 263 |
fun distinct (con1,args1) (con2,args2) = |
2267 | 264 |
let val arg1 = (con1, args1) |
265 |
val arg2 = (con2, |
|
266 |
ListPair.map (fn (arg,vn) => upd_vname (K vn) arg) |
|
267 |
(args2, variantlist(map vname args2,map vname args1))) |
|
2033 | 268 |
in [dist arg1 arg2, dist arg2 arg1] end; |
1274 | 269 |
fun distincts [] = [] |
270 |
| distincts (c::cs) = (map (distinct c) cs) :: distincts cs; |
|
271 |
in distincts cons end; |
|
15570 | 272 |
val dist_les = List.concat (List.concat distincts_le); |
4043 | 273 |
val dist_eqs = let |
1274 | 274 |
fun distinct (_,args1) ((_,args2),leqs) = let |
2033 | 275 |
val (le1,le2) = (hd leqs, hd(tl leqs)); |
276 |
val (eq1,eq2) = (le1 RS dist_eqI, le2 RS dist_eqI) in |
|
277 |
if nonlazy args1 = [] then [eq1, eq1 RS not_sym] else |
|
278 |
if nonlazy args2 = [] then [eq2, eq2 RS not_sym] else |
|
279 |
[eq1, eq2] end; |
|
1274 | 280 |
fun distincts [] = [] |
4062 | 281 |
| distincts ((c,leqs)::cs) = List.concat |
2267 | 282 |
(ListPair.map (distinct c) ((map #1 cs),leqs)) @ |
283 |
distincts cs; |
|
12037 | 284 |
in map standard (distincts (cons~~distincts_le)) end; |
1274 | 285 |
|
286 |
local |
|
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|
287 |
fun pgterm rel con args = |
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288 |
let |
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|
289 |
fun append s = upd_vname(fn v => v^s); |
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|
290 |
val (largs,rargs) = (args, map (append "'") args); |
17811 | 291 |
val concl = mk_trp (foldr1 mk_conj (ListPair.map rel (map %# largs, map %# rargs))); |
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|
292 |
val prem = mk_trp (rel(con_app con largs,con_app con rargs)); |
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|
293 |
val prop = prem ===> lift_defined %: (nonlazy largs, concl); |
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|
294 |
in pg con_appls prop end; |
15570 | 295 |
val cons' = List.filter (fn (_,args) => args<>[]) cons; |
1274 | 296 |
in |
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|
297 |
val inverts = |
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changeset
|
298 |
let |
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changeset
|
299 |
val abs_less = ax_abs_iso RS (allI RS injection_less) RS iffD1; |
ef32a42f4079
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|
300 |
val tacs = [ |
ef32a42f4079
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changeset
|
301 |
dtac abs_less 1, |
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changeset
|
302 |
REPEAT (dresolve_tac [sinl_less RS iffD1, sinr_less RS iffD1] 1), |
16385 | 303 |
asm_full_simp_tac (HOLCF_ss addsimps [spair_less]) 1]; |
16321
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changeset
|
304 |
in map (fn (con,args) => pgterm (op <<) con args tacs) cons' end; |
ef32a42f4079
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changeset
|
305 |
val injects = |
ef32a42f4079
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huffman
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16224
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changeset
|
306 |
let |
ef32a42f4079
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huffman
parents:
16224
diff
changeset
|
307 |
val abs_eq = ax_abs_iso RS (allI RS injection_eq) RS iffD1; |
ef32a42f4079
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parents:
16224
diff
changeset
|
308 |
val tacs = [ |
ef32a42f4079
faster proofs of inverts and injects lemmas, with fewer strictness hypotheses
huffman
parents:
16224
diff
changeset
|
309 |
dtac abs_eq 1, |
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huffman
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changeset
|
310 |
REPEAT (dresolve_tac [sinl_inject, sinr_inject] 1), |
16385 | 311 |
asm_full_simp_tac (HOLCF_ss addsimps [spair_eq]) 1]; |
16321
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changeset
|
312 |
in map (fn (con,args) => pgterm (op ===) con args tacs) cons' end; |
1274 | 313 |
end; |
314 |
||
1637
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|
315 |
(* ----- theorems concerning one induction step ----------------------------- *) |
1274 | 316 |
|
1637
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changeset
|
317 |
val copy_strict = pg[ax_copy_def](mk_trp(strict(dc_copy`%"f"))) [ |
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changeset
|
318 |
asm_simp_tac(HOLCF_ss addsimps [abs_strict, when_strict]) 1]; |
1637
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changeset
|
319 |
val copy_apps = map (fn (con,args) => pg [ax_copy_def] |
11531
d038246a62f2
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berghofe
parents:
10835
diff
changeset
|
320 |
(lift_defined %: (nonlazy_rec args, |
2033 | 321 |
mk_trp(dc_copy`%"f"`(con_app con args) === |
11531
d038246a62f2
Renamed functions % and %% to avoid clash with syntax for proof terms.
berghofe
parents:
10835
diff
changeset
|
322 |
(con_app2 con (app_rec_arg (cproj (%:"f") eqs)) args)))) |
2033 | 323 |
(map (case_UU_tac (abs_strict::when_strict::con_stricts) |
324 |
1 o vname) |
|
15570 | 325 |
(List.filter (fn a => not (is_rec a orelse is_lazy a)) args) |
2033 | 326 |
@[asm_simp_tac (HOLCF_ss addsimps when_apps) 1, |
15742 | 327 |
simp_tac (HOLCF_ss addsimps con_appls) 1]))cons; |
1637
b8a8ae2e5de1
Updated: 01-Mar-96 when functional strictified, copy_def based on when_def
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parents:
1512
diff
changeset
|
328 |
val copy_stricts = map (fn (con,args) => pg [] (mk_trp(dc_copy`UU` |
2033 | 329 |
(con_app con args) ===UU)) |
16224
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Domain package generates match functions for new datatypes, for use with the fixrec package
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15742
diff
changeset
|
330 |
(let val rews = copy_strict::copy_apps@con_rews |
2033 | 331 |
in map (case_UU_tac rews 1) (nonlazy args) @ [ |
332 |
asm_simp_tac (HOLCF_ss addsimps rews) 1] end)) |
|
15570 | 333 |
(List.filter (fn (_,args)=>exists is_nonlazy_rec args) cons); |
1274 | 334 |
val copy_rews = copy_strict::copy_apps @ copy_stricts; |
4043 | 335 |
in thy |> Theory.add_path (Sign.base_name dname) |
8438 | 336 |
|> (#1 o (PureThy.add_thmss (map Thm.no_attributes [ |
4043 | 337 |
("iso_rews" , iso_rews ), |
338 |
("exhaust" , [exhaust] ), |
|
339 |
("casedist" , [casedist]), |
|
340 |
("when_rews", when_rews ), |
|
17840
11bcd77cfa22
domain package generates compactness lemmas for new constructors
huffman
parents:
17811
diff
changeset
|
341 |
("compacts", con_compacts), |
4043 | 342 |
("con_rews", con_rews), |
343 |
("sel_rews", sel_rews), |
|
344 |
("dis_rews", dis_rews), |
|
345 |
("dist_les", dist_les), |
|
346 |
("dist_eqs", dist_eqs), |
|
347 |
("inverts" , inverts ), |
|
348 |
("injects" , injects ), |
|
8438 | 349 |
("copy_rews", copy_rews)]))) |
16462 | 350 |
|> (#1 o PureThy.add_thmss [(("match_rews", mat_rews), [Simplifier.simp_add_global])]) |
12037 | 351 |
|> Theory.parent_path |> rpair (iso_rews @ when_rews @ con_rews @ sel_rews @ dis_rews @ |
352 |
dist_les @ dist_eqs @ copy_rews) |
|
1274 | 353 |
end; (* let *) |
354 |
||
4043 | 355 |
fun comp_theorems (comp_dnam, eqs: eq list) thy = |
1274 | 356 |
let |
4008 | 357 |
val dnames = map (fst o fst) eqs; |
358 |
val conss = map snd eqs; |
|
359 |
val comp_dname = Sign.full_name (sign_of thy) comp_dnam; |
|
360 |
||
12037 | 361 |
val d = writeln("Proving induction properties of domain "^comp_dname^" ..."); |
1274 | 362 |
val pg = pg' thy; |
363 |
||
1637
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Updated: 01-Mar-96 when functional strictified, copy_def based on when_def
oheimb
parents:
1512
diff
changeset
|
364 |
(* ----- getting the composite axiom and definitions ------------------------ *) |
1274 | 365 |
|
16486 | 366 |
local fun ga s dn = get_thm thy (Name (dn ^ "." ^ s)) in |
4043 | 367 |
val axs_reach = map (ga "reach" ) dnames; |
368 |
val axs_take_def = map (ga "take_def" ) dnames; |
|
369 |
val axs_finite_def = map (ga "finite_def") dnames; |
|
370 |
val ax_copy2_def = ga "copy_def" comp_dnam; |
|
371 |
val ax_bisim_def = ga "bisim_def" comp_dnam; |
|
372 |
end; (* local *) |
|
373 |
||
16486 | 374 |
local fun gt s dn = get_thm thy (Name (dn ^ "." ^ s)); |
375 |
fun gts s dn = get_thms thy (Name (dn ^ "." ^ s)) in |
|
4043 | 376 |
val cases = map (gt "casedist" ) dnames; |
15570 | 377 |
val con_rews = List.concat (map (gts "con_rews" ) dnames); |
378 |
val copy_rews = List.concat (map (gts "copy_rews") dnames); |
|
1274 | 379 |
end; (* local *) |
380 |
||
11531
d038246a62f2
Renamed functions % and %% to avoid clash with syntax for proof terms.
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10835
diff
changeset
|
381 |
fun dc_take dn = %%:(dn^"_take"); |
1274 | 382 |
val x_name = idx_name dnames "x"; |
383 |
val P_name = idx_name dnames "P"; |
|
1637
b8a8ae2e5de1
Updated: 01-Mar-96 when functional strictified, copy_def based on when_def
oheimb
parents:
1512
diff
changeset
|
384 |
val n_eqs = length eqs; |
b8a8ae2e5de1
Updated: 01-Mar-96 when functional strictified, copy_def based on when_def
oheimb
parents:
1512
diff
changeset
|
385 |
|
b8a8ae2e5de1
Updated: 01-Mar-96 when functional strictified, copy_def based on when_def
oheimb
parents:
1512
diff
changeset
|
386 |
(* ----- theorems concerning finite approximation and finite induction ------ *) |
1274 | 387 |
|
388 |
local |
|
16224
57094b83774e
Domain package generates match functions for new datatypes, for use with the fixrec package
huffman
parents:
15742
diff
changeset
|
389 |
val iterate_Cprod_ss = simpset_of Fix.thy; |
1274 | 390 |
val copy_con_rews = copy_rews @ con_rews; |
1637
b8a8ae2e5de1
Updated: 01-Mar-96 when functional strictified, copy_def based on when_def
oheimb
parents:
1512
diff
changeset
|
391 |
val copy_take_defs =(if n_eqs = 1 then [] else [ax_copy2_def]) @ axs_take_def; |
17811 | 392 |
val take_stricts=pg copy_take_defs(mk_trp(foldr1 mk_conj(map(fn((dn,args),_)=> |
11531
d038246a62f2
Renamed functions % and %% to avoid clash with syntax for proof terms.
berghofe
parents:
10835
diff
changeset
|
393 |
strict(dc_take dn $ %:"n")) eqs))) ([ |
13454 | 394 |
induct_tac "n" 1, |
4030 | 395 |
simp_tac iterate_Cprod_ss 1, |
2033 | 396 |
asm_simp_tac (iterate_Cprod_ss addsimps copy_rews)1]); |
1274 | 397 |
val take_stricts' = rewrite_rule copy_take_defs take_stricts; |
11531
d038246a62f2
Renamed functions % and %% to avoid clash with syntax for proof terms.
berghofe
parents:
10835
diff
changeset
|
398 |
val take_0s = mapn(fn n=> fn dn => pg axs_take_def(mk_trp((dc_take dn $ %%:"0") |
2033 | 399 |
`%x_name n === UU))[ |
400 |
simp_tac iterate_Cprod_ss 1]) 1 dnames; |
|
1637
b8a8ae2e5de1
Updated: 01-Mar-96 when functional strictified, copy_def based on when_def
oheimb
parents:
1512
diff
changeset
|
401 |
val c_UU_tac = case_UU_tac (take_stricts'::copy_con_rews) 1; |
17811 | 402 |
val take_apps = pg copy_take_defs (mk_trp(foldr1 mk_conj |
15570 | 403 |
(List.concat(map (fn ((dn,_),cons) => map (fn (con,args) => Library.foldr mk_all |
11531
d038246a62f2
Renamed functions % and %% to avoid clash with syntax for proof terms.
berghofe
parents:
10835
diff
changeset
|
404 |
(map vname args,(dc_take dn $ (%%:"Suc" $ %:"n"))`(con_app con args) === |
15570 | 405 |
con_app2 con (app_rec_arg (fn n=>dc_take (List.nth(dnames,n))$ %:"n")) |
2033 | 406 |
args)) cons) eqs)))) ([ |
407 |
simp_tac iterate_Cprod_ss 1, |
|
13454 | 408 |
induct_tac "n" 1, |
2033 | 409 |
simp_tac(iterate_Cprod_ss addsimps copy_con_rews) 1, |
410 |
asm_full_simp_tac (HOLCF_ss addsimps |
|
15570 | 411 |
(List.filter (has_fewer_prems 1) copy_rews)) 1, |
2033 | 412 |
TRY(safe_tac HOL_cs)] @ |
15570 | 413 |
(List.concat(map (fn ((dn,_),cons) => map (fn (con,args) => |
2033 | 414 |
if nonlazy_rec args = [] then all_tac else |
415 |
EVERY(map c_UU_tac (nonlazy_rec args)) THEN |
|
416 |
asm_full_simp_tac (HOLCF_ss addsimps copy_rews)1 |
|
417 |
) cons) eqs))); |
|
1274 | 418 |
in |
12037 | 419 |
val take_rews = map standard (atomize take_stricts @ take_0s @ atomize take_apps); |
1274 | 420 |
end; (* local *) |
421 |
||
422 |
local |
|
15570 | 423 |
fun one_con p (con,args) = Library.foldr mk_All (map vname args, |
2033 | 424 |
lift_defined (bound_arg (map vname args)) (nonlazy args, |
11531
d038246a62f2
Renamed functions % and %% to avoid clash with syntax for proof terms.
berghofe
parents:
10835
diff
changeset
|
425 |
lift (fn arg => %:(P_name (1+rec_of arg)) $ bound_arg args arg) |
15570 | 426 |
(List.filter is_rec args,mk_trp(%:p $ con_app2 con (bound_arg args) args)))); |
11531
d038246a62f2
Renamed functions % and %% to avoid clash with syntax for proof terms.
berghofe
parents:
10835
diff
changeset
|
427 |
fun one_eq ((p,cons),concl) = (mk_trp(%:p $ UU) ===> |
15570 | 428 |
Library.foldr (op ===>) (map (one_con p) cons,concl)); |
429 |
fun ind_term concf = Library.foldr one_eq (mapn (fn n => fn x => (P_name n, x))1conss, |
|
17811 | 430 |
mk_trp(foldr1 mk_conj (mapn concf 1 dnames))); |
1274 | 431 |
val take_ss = HOL_ss addsimps take_rews; |
1637
b8a8ae2e5de1
Updated: 01-Mar-96 when functional strictified, copy_def based on when_def
oheimb
parents:
1512
diff
changeset
|
432 |
fun quant_tac i = EVERY(mapn(fn n=> fn _=> res_inst_tac[("x",x_name n)]spec i) |
2033 | 433 |
1 dnames); |
15570 | 434 |
fun ind_prems_tac prems = EVERY(List.concat (map (fn cons => ( |
2033 | 435 |
resolve_tac prems 1 :: |
15570 | 436 |
List.concat (map (fn (_,args) => |
2033 | 437 |
resolve_tac prems 1 :: |
438 |
map (K(atac 1)) (nonlazy args) @ |
|
15570 | 439 |
map (K(atac 1)) (List.filter is_rec args)) |
2033 | 440 |
cons))) conss)); |
1274 | 441 |
local |
1637
b8a8ae2e5de1
Updated: 01-Mar-96 when functional strictified, copy_def based on when_def
oheimb
parents:
1512
diff
changeset
|
442 |
(* check whether every/exists constructor of the n-th part of the equation: |
b8a8ae2e5de1
Updated: 01-Mar-96 when functional strictified, copy_def based on when_def
oheimb
parents:
1512
diff
changeset
|
443 |
it has a possibly indirectly recursive argument that isn't/is possibly |
b8a8ae2e5de1
Updated: 01-Mar-96 when functional strictified, copy_def based on when_def
oheimb
parents:
1512
diff
changeset
|
444 |
indirectly lazy *) |
b8a8ae2e5de1
Updated: 01-Mar-96 when functional strictified, copy_def based on when_def
oheimb
parents:
1512
diff
changeset
|
445 |
fun rec_to quant nfn rfn ns lazy_rec (n,cons) = quant (exists (fn arg => |
2033 | 446 |
is_rec arg andalso not(rec_of arg mem ns) andalso |
447 |
((rec_of arg = n andalso nfn(lazy_rec orelse is_lazy arg)) orelse |
|
448 |
rec_of arg <> n andalso rec_to quant nfn rfn (rec_of arg::ns) |
|
15570 | 449 |
(lazy_rec orelse is_lazy arg) (n, (List.nth(conss,rec_of arg)))) |
2033 | 450 |
) o snd) cons; |
1637
b8a8ae2e5de1
Updated: 01-Mar-96 when functional strictified, copy_def based on when_def
oheimb
parents:
1512
diff
changeset
|
451 |
fun all_rec_to ns = rec_to forall not all_rec_to ns; |
4030 | 452 |
fun warn (n,cons) = if all_rec_to [] false (n,cons) then (warning |
15570 | 453 |
("domain "^List.nth(dnames,n)^" is empty!"); true) else false; |
16842 | 454 |
fun lazy_rec_to ns = rec_to exists I lazy_rec_to ns; |
1637
b8a8ae2e5de1
Updated: 01-Mar-96 when functional strictified, copy_def based on when_def
oheimb
parents:
1512
diff
changeset
|
455 |
|
b8a8ae2e5de1
Updated: 01-Mar-96 when functional strictified, copy_def based on when_def
oheimb
parents:
1512
diff
changeset
|
456 |
in val n__eqs = mapn (fn n => fn (_,cons) => (n,cons)) 0 eqs; |
b8a8ae2e5de1
Updated: 01-Mar-96 when functional strictified, copy_def based on when_def
oheimb
parents:
1512
diff
changeset
|
457 |
val is_emptys = map warn n__eqs; |
b8a8ae2e5de1
Updated: 01-Mar-96 when functional strictified, copy_def based on when_def
oheimb
parents:
1512
diff
changeset
|
458 |
val is_finite = forall (not o lazy_rec_to [] false) n__eqs; |
1274 | 459 |
end; |
1637
b8a8ae2e5de1
Updated: 01-Mar-96 when functional strictified, copy_def based on when_def
oheimb
parents:
1512
diff
changeset
|
460 |
in (* local *) |
11531
d038246a62f2
Renamed functions % and %% to avoid clash with syntax for proof terms.
berghofe
parents:
10835
diff
changeset
|
461 |
val finite_ind = pg'' thy [] (ind_term (fn n => fn dn => %:(P_name n)$ |
d038246a62f2
Renamed functions % and %% to avoid clash with syntax for proof terms.
berghofe
parents:
10835
diff
changeset
|
462 |
(dc_take dn $ %:"n" `%(x_name n)))) (fn prems => [ |
2033 | 463 |
quant_tac 1, |
2445
51993fea433f
removed Holcfb.thy and Holcfb.ML, moving classical3 to HOL.ML as classical2
oheimb
parents:
2276
diff
changeset
|
464 |
simp_tac HOL_ss 1, |
13454 | 465 |
induct_tac "n" 1, |
2033 | 466 |
simp_tac (take_ss addsimps prems) 1, |
467 |
TRY(safe_tac HOL_cs)] |
|
15570 | 468 |
@ List.concat(map (fn (cons,cases) => [ |
2033 | 469 |
res_inst_tac [("x","x")] cases 1, |
470 |
asm_simp_tac (take_ss addsimps prems) 1] |
|
15570 | 471 |
@ List.concat(map (fn (con,args) => |
2033 | 472 |
asm_simp_tac take_ss 1 :: |
473 |
map (fn arg => |
|
474 |
case_UU_tac (prems@con_rews) 1 ( |
|
15570 | 475 |
List.nth(dnames,rec_of arg)^"_take n$"^vname arg)) |
476 |
(List.filter is_nonlazy_rec args) @ [ |
|
2033 | 477 |
resolve_tac prems 1] @ |
478 |
map (K (atac 1)) (nonlazy args) @ |
|
15570 | 479 |
map (K (etac spec 1)) (List.filter is_rec args)) |
2033 | 480 |
cons)) |
4043 | 481 |
(conss~~cases))); |
1637
b8a8ae2e5de1
Updated: 01-Mar-96 when functional strictified, copy_def based on when_def
oheimb
parents:
1512
diff
changeset
|
482 |
|
b8a8ae2e5de1
Updated: 01-Mar-96 when functional strictified, copy_def based on when_def
oheimb
parents:
1512
diff
changeset
|
483 |
val take_lemmas =mapn(fn n=> fn(dn,ax_reach)=> pg'' thy axs_take_def(mk_All("n", |
2033 | 484 |
mk_trp(dc_take dn $ Bound 0 `%(x_name n) === |
485 |
dc_take dn $ Bound 0 `%(x_name n^"'"))) |
|
11531
d038246a62f2
Renamed functions % and %% to avoid clash with syntax for proof terms.
berghofe
parents:
10835
diff
changeset
|
486 |
===> mk_trp(%:(x_name n) === %:(x_name n^"'"))) (fn prems => [ |
2033 | 487 |
res_inst_tac[("t",x_name n )](ax_reach RS subst) 1, |
488 |
res_inst_tac[("t",x_name n^"'")](ax_reach RS subst) 1, |
|
489 |
stac fix_def2 1, |
|
490 |
REPEAT(CHANGED(rtac(contlub_cfun_arg RS ssubst)1 |
|
491 |
THEN chain_tac 1)), |
|
492 |
stac contlub_cfun_fun 1, |
|
493 |
stac contlub_cfun_fun 2, |
|
494 |
rtac lub_equal 3, |
|
495 |
chain_tac 1, |
|
496 |
rtac allI 1, |
|
497 |
resolve_tac prems 1])) 1 (dnames~~axs_reach); |
|
1637
b8a8ae2e5de1
Updated: 01-Mar-96 when functional strictified, copy_def based on when_def
oheimb
parents:
1512
diff
changeset
|
498 |
|
b8a8ae2e5de1
Updated: 01-Mar-96 when functional strictified, copy_def based on when_def
oheimb
parents:
1512
diff
changeset
|
499 |
(* ----- theorems concerning finiteness and induction ----------------------- *) |
1274 | 500 |
|
501 |
val (finites,ind) = if is_finite then |
|
1637
b8a8ae2e5de1
Updated: 01-Mar-96 when functional strictified, copy_def based on when_def
oheimb
parents:
1512
diff
changeset
|
502 |
let |
11531
d038246a62f2
Renamed functions % and %% to avoid clash with syntax for proof terms.
berghofe
parents:
10835
diff
changeset
|
503 |
fun take_enough dn = mk_ex ("n",dc_take dn $ Bound 0 ` %:"x" === %:"x"); |
d038246a62f2
Renamed functions % and %% to avoid clash with syntax for proof terms.
berghofe
parents:
10835
diff
changeset
|
504 |
val finite_lemmas1a = map (fn dn => pg [] (mk_trp(defined (%:"x")) ===> |
d038246a62f2
Renamed functions % and %% to avoid clash with syntax for proof terms.
berghofe
parents:
10835
diff
changeset
|
505 |
mk_trp(mk_disj(mk_all("n",dc_take dn $ Bound 0 ` %:"x" === UU), |
2033 | 506 |
take_enough dn)) ===> mk_trp(take_enough dn)) [ |
507 |
etac disjE 1, |
|
508 |
etac notE 1, |
|
509 |
resolve_tac take_lemmas 1, |
|
510 |
asm_simp_tac take_ss 1, |
|
511 |
atac 1]) dnames; |
|
17811 | 512 |
val finite_lemma1b = pg [] (mk_trp (mk_all("n",foldr1 mk_conj (mapn |
2033 | 513 |
(fn n => fn ((dn,args),_) => mk_constrainall(x_name n,Type(dn,args), |
514 |
mk_disj(dc_take dn $ Bound 1 ` Bound 0 === UU, |
|
515 |
dc_take dn $ Bound 1 ` Bound 0 === Bound 0))) 1 eqs)))) ([ |
|
516 |
rtac allI 1, |
|
13454 | 517 |
induct_tac "n" 1, |
2033 | 518 |
simp_tac take_ss 1, |
519 |
TRY(safe_tac(empty_cs addSEs[conjE] addSIs[conjI]))] @ |
|
15570 | 520 |
List.concat(mapn (fn n => fn (cons,cases) => [ |
2033 | 521 |
simp_tac take_ss 1, |
522 |
rtac allI 1, |
|
523 |
res_inst_tac [("x",x_name n)] cases 1, |
|
524 |
asm_simp_tac take_ss 1] @ |
|
15570 | 525 |
List.concat(map (fn (con,args) => |
2033 | 526 |
asm_simp_tac take_ss 1 :: |
15570 | 527 |
List.concat(map (fn vn => [ |
2033 | 528 |
eres_inst_tac [("x",vn)] all_dupE 1, |
529 |
etac disjE 1, |
|
530 |
asm_simp_tac (HOL_ss addsimps con_rews) 1, |
|
531 |
asm_simp_tac take_ss 1]) |
|
532 |
(nonlazy_rec args))) |
|
533 |
cons)) |
|
4043 | 534 |
1 (conss~~cases))); |
1637
b8a8ae2e5de1
Updated: 01-Mar-96 when functional strictified, copy_def based on when_def
oheimb
parents:
1512
diff
changeset
|
535 |
val finites = map (fn (dn,l1b) => pg axs_finite_def (mk_trp( |
11531
d038246a62f2
Renamed functions % and %% to avoid clash with syntax for proof terms.
berghofe
parents:
10835
diff
changeset
|
536 |
%%:(dn^"_finite") $ %:"x"))[ |
2033 | 537 |
case_UU_tac take_rews 1 "x", |
538 |
eresolve_tac finite_lemmas1a 1, |
|
539 |
step_tac HOL_cs 1, |
|
540 |
step_tac HOL_cs 1, |
|
541 |
cut_facts_tac [l1b] 1, |
|
542 |
fast_tac HOL_cs 1]) (dnames~~atomize finite_lemma1b); |
|
1637
b8a8ae2e5de1
Updated: 01-Mar-96 when functional strictified, copy_def based on when_def
oheimb
parents:
1512
diff
changeset
|
543 |
in |
b8a8ae2e5de1
Updated: 01-Mar-96 when functional strictified, copy_def based on when_def
oheimb
parents:
1512
diff
changeset
|
544 |
(finites, |
11531
d038246a62f2
Renamed functions % and %% to avoid clash with syntax for proof terms.
berghofe
parents:
10835
diff
changeset
|
545 |
pg'' thy[](ind_term (fn n => fn dn => %:(P_name n) $ %:(x_name n)))(fn prems => |
2033 | 546 |
TRY(safe_tac HOL_cs) :: |
15570 | 547 |
List.concat (map (fn (finite,fin_ind) => [ |
2033 | 548 |
rtac(rewrite_rule axs_finite_def finite RS exE)1, |
549 |
etac subst 1, |
|
550 |
rtac fin_ind 1, |
|
551 |
ind_prems_tac prems]) |
|
552 |
(finites~~(atomize finite_ind)) )) |
|
1274 | 553 |
) end (* let *) else |
1637
b8a8ae2e5de1
Updated: 01-Mar-96 when functional strictified, copy_def based on when_def
oheimb
parents:
1512
diff
changeset
|
554 |
(mapn (fn n => fn dn => read_instantiate_sg (sign_of thy) |
2033 | 555 |
[("P",dn^"_finite "^x_name n)] excluded_middle) 1 dnames, |
16778 | 556 |
pg'' thy [] (Library.foldr (op ===>) (mapn (fn n => K(mk_trp(%%:admN $ %:(P_name n)))) |
11531
d038246a62f2
Renamed functions % and %% to avoid clash with syntax for proof terms.
berghofe
parents:
10835
diff
changeset
|
557 |
1 dnames, ind_term (fn n => fn dn => %:(P_name n) $ %:(x_name n)))) |
2033 | 558 |
(fn prems => map (fn ax_reach => rtac (ax_reach RS subst) 1) |
559 |
axs_reach @ [ |
|
560 |
quant_tac 1, |
|
561 |
rtac (adm_impl_admw RS wfix_ind) 1, |
|
4030 | 562 |
REPEAT_DETERM(rtac adm_all2 1), |
563 |
REPEAT_DETERM(TRY(rtac adm_conj 1) THEN |
|
564 |
rtac adm_subst 1 THEN |
|
2033 | 565 |
cont_tacR 1 THEN resolve_tac prems 1), |
566 |
strip_tac 1, |
|
567 |
rtac (rewrite_rule axs_take_def finite_ind) 1, |
|
568 |
ind_prems_tac prems]) |
|
4755 | 569 |
handle ERROR => (warning "Cannot prove infinite induction rule"; refl)) |
1274 | 570 |
end; (* local *) |
571 |
||
1637
b8a8ae2e5de1
Updated: 01-Mar-96 when functional strictified, copy_def based on when_def
oheimb
parents:
1512
diff
changeset
|
572 |
(* ----- theorem concerning coinduction ------------------------------------- *) |
b8a8ae2e5de1
Updated: 01-Mar-96 when functional strictified, copy_def based on when_def
oheimb
parents:
1512
diff
changeset
|
573 |
|
1274 | 574 |
local |
575 |
val xs = mapn (fn n => K (x_name n)) 1 dnames; |
|
1637
b8a8ae2e5de1
Updated: 01-Mar-96 when functional strictified, copy_def based on when_def
oheimb
parents:
1512
diff
changeset
|
576 |
fun bnd_arg n i = Bound(2*(n_eqs - n)-i-1); |
1274 | 577 |
val take_ss = HOL_ss addsimps take_rews; |
4755 | 578 |
val sproj = prj (fn s => K("fst("^s^")")) (fn s => K("snd("^s^")")); |
11531
d038246a62f2
Renamed functions % and %% to avoid clash with syntax for proof terms.
berghofe
parents:
10835
diff
changeset
|
579 |
val coind_lemma=pg[ax_bisim_def](mk_trp(mk_imp(%%:(comp_dname^"_bisim") $ %:"R", |
15570 | 580 |
Library.foldr (fn (x,t)=> mk_all(x,mk_all(x^"'",t))) (xs, |
581 |
Library.foldr mk_imp (mapn (fn n => K(proj (%:"R") eqs n $ |
|
2033 | 582 |
bnd_arg n 0 $ bnd_arg n 1)) 0 dnames, |
17811 | 583 |
foldr1 mk_conj (mapn (fn n => fn dn => |
11531
d038246a62f2
Renamed functions % and %% to avoid clash with syntax for proof terms.
berghofe
parents:
10835
diff
changeset
|
584 |
(dc_take dn $ %:"n" `bnd_arg n 0 === |
d038246a62f2
Renamed functions % and %% to avoid clash with syntax for proof terms.
berghofe
parents:
10835
diff
changeset
|
585 |
(dc_take dn $ %:"n" `bnd_arg n 1)))0 dnames)))))) |
2033 | 586 |
([ rtac impI 1, |
13454 | 587 |
induct_tac "n" 1, |
2033 | 588 |
simp_tac take_ss 1, |
589 |
safe_tac HOL_cs] @ |
|
15570 | 590 |
List.concat(mapn (fn n => fn x => [ |
2033 | 591 |
rotate_tac (n+1) 1, |
592 |
etac all2E 1, |
|
4755 | 593 |
eres_inst_tac [("P1", sproj "R" eqs n^ |
2033 | 594 |
" "^x^" "^x^"'")](mp RS disjE) 1, |
595 |
TRY(safe_tac HOL_cs), |
|
596 |
REPEAT(CHANGED(asm_simp_tac take_ss 1))]) |
|
597 |
0 xs)); |
|
1274 | 598 |
in |
11531
d038246a62f2
Renamed functions % and %% to avoid clash with syntax for proof terms.
berghofe
parents:
10835
diff
changeset
|
599 |
val coind = pg [] (mk_trp(%%:(comp_dname^"_bisim") $ %:"R") ===> |
15570 | 600 |
Library.foldr (op ===>) (mapn (fn n => fn x => |
11531
d038246a62f2
Renamed functions % and %% to avoid clash with syntax for proof terms.
berghofe
parents:
10835
diff
changeset
|
601 |
mk_trp(proj (%:"R") eqs n $ %:x $ %:(x^"'"))) 0 xs, |
17811 | 602 |
mk_trp(foldr1 mk_conj (map (fn x => %:x === %:(x^"'")) xs)))) ([ |
2033 | 603 |
TRY(safe_tac HOL_cs)] @ |
15570 | 604 |
List.concat(map (fn take_lemma => [ |
2033 | 605 |
rtac take_lemma 1, |
606 |
cut_facts_tac [coind_lemma] 1, |
|
607 |
fast_tac HOL_cs 1]) |
|
608 |
take_lemmas)); |
|
1274 | 609 |
end; (* local *) |
610 |
||
4043 | 611 |
in thy |> Theory.add_path comp_dnam |
8438 | 612 |
|> (#1 o (PureThy.add_thmss (map Thm.no_attributes [ |
4043 | 613 |
("take_rews" , take_rews ), |
614 |
("take_lemmas", take_lemmas), |
|
615 |
("finites" , finites ), |
|
616 |
("finite_ind", [finite_ind]), |
|
617 |
("ind" , [ind ]), |
|
8438 | 618 |
("coind" , [coind ])]))) |
12037 | 619 |
|> Theory.parent_path |> rpair take_rews |
1274 | 620 |
end; (* let *) |
621 |
end; (* local *) |
|
622 |
end; (* struct *) |