author | wenzelm |
Tue, 02 Sep 2008 16:55:33 +0200 | |
changeset 28084 | a05ca48ef263 |
parent 28083 | 103d9282a946 |
child 28362 | b0ebac91c8d5 |
permissions | -rw-r--r-- |
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(* Title: HOL/Tools/datatype_rep_proofs.ML |
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ID: $Id$ |
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Author: Stefan Berghofer, TU Muenchen |
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Definitional introduction of datatypes |
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Proof of characteristic theorems: |
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- injectivity of constructors |
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- distinctness of constructors |
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- induction theorem |
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*) |
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signature DATATYPE_REP_PROOFS = |
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sig |
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val distinctness_limit : int Config.T |
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val distinctness_limit_setup : theory -> theory |
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val representation_proofs : bool -> DatatypeAux.datatype_info Symtab.table -> |
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string list -> DatatypeAux.descr list -> (string * sort) list -> |
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(string * mixfix) list -> (string * mixfix) list list -> attribute |
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-> theory -> (thm list list * thm list list * thm list list * |
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DatatypeAux.simproc_dist list * thm) * theory |
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end; |
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structure DatatypeRepProofs : DATATYPE_REP_PROOFS = |
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struct |
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open DatatypeAux; |
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(*the kind of distinctiveness axioms depends on number of constructors*) |
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val (distinctness_limit, distinctness_limit_setup) = |
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Attrib.config_int "datatype_distinctness_limit" 7; |
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val (_ $ (_ $ (_ $ (distinct_f $ _) $ _))) = hd (prems_of distinct_lemma); |
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val collect_simp = rewrite_rule [mk_meta_eq mem_Collect_eq]; |
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(** theory context references **) |
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val f_myinv_f = thm "f_myinv_f"; |
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val myinv_f_f = thm "myinv_f_f"; |
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fun exh_thm_of (dt_info : datatype_info Symtab.table) tname = |
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#exhaustion (the (Symtab.lookup dt_info tname)); |
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(******************************************************************************) |
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fun representation_proofs flat_names (dt_info : datatype_info Symtab.table) |
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new_type_names descr sorts types_syntax constr_syntax case_names_induct thy = |
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let |
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val Datatype_thy = ThyInfo.the_theory "Datatype" thy; |
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val node_name = "Datatype.node"; |
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val In0_name = "Datatype.In0"; |
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val In1_name = "Datatype.In1"; |
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val Scons_name = "Datatype.Scons"; |
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val Leaf_name = "Datatype.Leaf"; |
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val Numb_name = "Datatype.Numb"; |
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val Lim_name = "Datatype.Lim"; |
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val Suml_name = "Datatype.Suml"; |
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val Sumr_name = "Datatype.Sumr"; |
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val [In0_inject, In1_inject, Scons_inject, Leaf_inject, |
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In0_eq, In1_eq, In0_not_In1, In1_not_In0, |
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Lim_inject, Suml_inject, Sumr_inject] = map (PureThy.get_thm Datatype_thy) |
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["In0_inject", "In1_inject", "Scons_inject", "Leaf_inject", |
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"In0_eq", "In1_eq", "In0_not_In1", "In1_not_In0", |
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"Lim_inject", "Suml_inject", "Sumr_inject"]; |
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val descr' = List.concat descr; |
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val big_name = space_implode "_" new_type_names; |
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val thy1 = add_path flat_names big_name thy; |
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val big_rec_name = big_name ^ "_rep_set"; |
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val rep_set_names' = |
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(if length descr' = 1 then [big_rec_name] else |
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(map ((curry (op ^) (big_rec_name ^ "_")) o string_of_int) |
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(1 upto (length descr')))); |
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val rep_set_names = map (Sign.full_name thy1) rep_set_names'; |
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val tyvars = map (fn (_, (_, Ts, _)) => map dest_DtTFree Ts) (hd descr); |
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val leafTs' = get_nonrec_types descr' sorts; |
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val branchTs = get_branching_types descr' sorts; |
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val branchT = if null branchTs then HOLogic.unitT |
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else BalancedTree.make (fn (T, U) => Type ("+", [T, U])) branchTs; |
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val arities = get_arities descr' \ 0; |
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val unneeded_vars = hd tyvars \\ foldr add_typ_tfree_names [] (leafTs' @ branchTs); |
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val leafTs = leafTs' @ (map (fn n => TFree (n, (the o AList.lookup (op =) sorts) n)) unneeded_vars); |
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val recTs = get_rec_types descr' sorts; |
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val newTs = Library.take (length (hd descr), recTs); |
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val oldTs = Library.drop (length (hd descr), recTs); |
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val sumT = if null leafTs then HOLogic.unitT |
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else BalancedTree.make (fn (T, U) => Type ("+", [T, U])) leafTs; |
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val Univ_elT = HOLogic.mk_setT (Type (node_name, [sumT, branchT])); |
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val UnivT = HOLogic.mk_setT Univ_elT; |
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val UnivT' = Univ_elT --> HOLogic.boolT; |
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val Collect = Const ("Collect", UnivT' --> UnivT); |
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val In0 = Const (In0_name, Univ_elT --> Univ_elT); |
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val In1 = Const (In1_name, Univ_elT --> Univ_elT); |
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val Leaf = Const (Leaf_name, sumT --> Univ_elT); |
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val Lim = Const (Lim_name, (branchT --> Univ_elT) --> Univ_elT); |
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(* make injections needed for embedding types in leaves *) |
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fun mk_inj T' x = |
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let |
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fun mk_inj' T n i = |
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if n = 1 then x else |
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let val n2 = n div 2; |
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val Type (_, [T1, T2]) = T |
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in |
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if i <= n2 then |
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Const ("Sum_Type.Inl", T1 --> T) $ (mk_inj' T1 n2 i) |
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else |
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Const ("Sum_Type.Inr", T2 --> T) $ (mk_inj' T2 (n - n2) (i - n2)) |
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end |
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in mk_inj' sumT (length leafTs) (1 + find_index_eq T' leafTs) |
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end; |
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(* make injections for constructors *) |
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fun mk_univ_inj ts = BalancedTree.access |
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{left = fn t => In0 $ t, |
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right = fn t => In1 $ t, |
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init = |
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if ts = [] then Const ("arbitrary", Univ_elT) |
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else foldr1 (HOLogic.mk_binop Scons_name) ts}; |
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(* function spaces *) |
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fun mk_fun_inj T' x = |
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let |
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fun mk_inj T n i = |
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if n = 1 then x else |
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let |
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val n2 = n div 2; |
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val Type (_, [T1, T2]) = T; |
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fun mkT U = (U --> Univ_elT) --> T --> Univ_elT |
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in |
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if i <= n2 then Const (Suml_name, mkT T1) $ mk_inj T1 n2 i |
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else Const (Sumr_name, mkT T2) $ mk_inj T2 (n - n2) (i - n2) |
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end |
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in mk_inj branchT (length branchTs) (1 + find_index_eq T' branchTs) |
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end; |
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val mk_lim = foldr (fn (T, t) => Lim $ mk_fun_inj T (Abs ("x", T, t))); |
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(************** generate introduction rules for representing set **********) |
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val _ = message "Constructing representing sets ..."; |
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(* make introduction rule for a single constructor *) |
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fun make_intr s n (i, (_, cargs)) = |
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let |
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fun mk_prem (dt, (j, prems, ts)) = (case strip_dtyp dt of |
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(dts, DtRec k) => |
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let |
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val Ts = map (typ_of_dtyp descr' sorts) dts; |
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val free_t = |
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app_bnds (mk_Free "x" (Ts ---> Univ_elT) j) (length Ts) |
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in (j + 1, list_all (map (pair "x") Ts, |
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HOLogic.mk_Trueprop |
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(Free (List.nth (rep_set_names', k), UnivT') $ free_t)) :: prems, |
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mk_lim free_t Ts :: ts) |
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end |
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| _ => |
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let val T = typ_of_dtyp descr' sorts dt |
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in (j + 1, prems, (Leaf $ mk_inj T (mk_Free "x" T j))::ts) |
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end); |
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val (_, prems, ts) = foldr mk_prem (1, [], []) cargs; |
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val concl = HOLogic.mk_Trueprop |
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(Free (s, UnivT') $ mk_univ_inj ts n i) |
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in Logic.list_implies (prems, concl) |
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end; |
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val intr_ts = List.concat (map (fn ((_, (_, _, constrs)), rep_set_name) => |
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map (make_intr rep_set_name (length constrs)) |
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((1 upto (length constrs)) ~~ constrs)) (descr' ~~ rep_set_names')); |
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val ({raw_induct = rep_induct, intrs = rep_intrs, ...}, thy2) = |
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InductivePackage.add_inductive_global (serial_string ()) |
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{quiet_mode = ! quiet_mode, verbose = false, kind = Thm.internalK, |
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alt_name = Name.binding big_rec_name, coind = false, no_elim = true, no_ind = false, |
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skip_mono = true} |
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(map (fn s => ((Name.binding s, UnivT'), NoSyn)) rep_set_names') [] |
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type Attrib.binding abbreviates Name.binding without attributes;
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(map (fn x => (Attrib.no_binding, x)) intr_ts) [] thy1; |
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(********************************* typedef ********************************) |
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val (typedefs, thy3) = thy2 |> |
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parent_path flat_names |> |
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fold_map (fn ((((name, mx), tvs), c), name') => |
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TypedefPackage.add_typedef_i false (SOME name') (name, tvs, mx) |
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(Collect $ Const (c, UnivT')) NONE |
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(rtac exI 1 THEN rtac CollectI 1 THEN |
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QUIET_BREADTH_FIRST (has_fewer_prems 1) |
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(resolve_tac rep_intrs 1))) |
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(types_syntax ~~ tyvars ~~ |
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(Library.take (length newTs, rep_set_names)) ~~ new_type_names) ||> |
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add_path flat_names big_name; |
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(*********************** definition of constructors ***********************) |
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207 |
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208 |
val big_rep_name = (space_implode "_" new_type_names) ^ "_Rep_"; |
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209 |
val rep_names = map (curry op ^ "Rep_") new_type_names; |
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210 |
val rep_names' = map (fn i => big_rep_name ^ (string_of_int i)) |
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(1 upto (length (List.concat (tl descr)))); |
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val all_rep_names = map (Sign.intern_const thy3) rep_names @ |
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map (Sign.full_name thy3) rep_names'; |
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(* isomorphism declarations *) |
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||
217 |
val iso_decls = map (fn (T, s) => (s, T --> Univ_elT, NoSyn)) |
|
218 |
(oldTs ~~ rep_names'); |
|
219 |
||
220 |
(* constructor definitions *) |
|
221 |
||
222 |
fun make_constr_def tname T n ((thy, defs, eqns, i), ((cname, cargs), (cname', mx))) = |
|
223 |
let |
|
224 |
fun constr_arg (dt, (j, l_args, r_args)) = |
|
225 |
let val T = typ_of_dtyp descr' sorts dt; |
|
226 |
val free_t = mk_Free "x" T j |
|
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|
227 |
in (case (strip_dtyp dt, strip_type T) of |
15574
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changeset
|
228 |
((_, DtRec m), (Us, U)) => (j + 1, free_t :: l_args, mk_lim |
b1d1b5bfc464
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|
229 |
(Const (List.nth (all_rep_names, m), U --> Univ_elT) $ |
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|
230 |
app_bnds free_t (length Us)) Us :: r_args) |
5177 | 231 |
| _ => (j + 1, free_t::l_args, (Leaf $ mk_inj T free_t)::r_args)) |
232 |
end; |
|
233 |
||
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|
234 |
val (_, l_args, r_args) = foldr constr_arg (1, [], []) cargs; |
5177 | 235 |
val constrT = (map (typ_of_dtyp descr' sorts) cargs) ---> T; |
22578 | 236 |
val abs_name = Sign.intern_const thy ("Abs_" ^ tname); |
237 |
val rep_name = Sign.intern_const thy ("Rep_" ^ tname); |
|
5177 | 238 |
val lhs = list_comb (Const (cname, constrT), l_args); |
239 |
val rhs = mk_univ_inj r_args n i; |
|
27330 | 240 |
val def = Logic.mk_equals (lhs, Const (abs_name, Univ_elT --> T) $ rhs); |
241 |
val def_name = Sign.base_name cname ^ "_def"; |
|
5177 | 242 |
val eqn = HOLogic.mk_Trueprop (HOLogic.mk_eq |
243 |
(Const (rep_name, T --> Univ_elT) $ lhs, rhs)); |
|
18377 | 244 |
val ([def_thm], thy') = |
245 |
thy |
|
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diff
changeset
|
246 |
|> Sign.add_consts_i [(cname', constrT, mx)] |
27691
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changeset
|
247 |
|> (PureThy.add_defs false o map Thm.no_attributes) [(def_name, def)]; |
5177 | 248 |
|
8436 | 249 |
in (thy', defs @ [def_thm], eqns @ [eqn], i + 1) end; |
5177 | 250 |
|
251 |
(* constructor definitions for datatype *) |
|
252 |
||
253 |
fun dt_constr_defs ((thy, defs, eqns, rep_congs, dist_lemmas), |
|
254 |
((((_, (_, _, constrs)), tname), T), constr_syntax)) = |
|
255 |
let |
|
256 |
val _ $ (_ $ (cong_f $ _) $ _) = concl_of arg_cong; |
|
22578 | 257 |
val rep_const = cterm_of thy |
258 |
(Const (Sign.intern_const thy ("Rep_" ^ tname), T --> Univ_elT)); |
|
259 |
val cong' = standard (cterm_instantiate [(cterm_of thy cong_f, rep_const)] arg_cong); |
|
260 |
val dist = standard (cterm_instantiate [(cterm_of thy distinct_f, rep_const)] distinct_lemma); |
|
15570 | 261 |
val (thy', defs', eqns', _) = Library.foldl ((make_constr_def tname T) (length constrs)) |
5661 | 262 |
((add_path flat_names tname thy, defs, [], 1), constrs ~~ constr_syntax) |
5177 | 263 |
in |
5661 | 264 |
(parent_path flat_names thy', defs', eqns @ [eqns'], |
5177 | 265 |
rep_congs @ [cong'], dist_lemmas @ [dist]) |
266 |
end; |
|
267 |
||
15570 | 268 |
val (thy4, constr_defs, constr_rep_eqns, rep_congs, dist_lemmas) = Library.foldl dt_constr_defs |
24712
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proper Sign operations instead of Theory aliases;
wenzelm
parents:
24112
diff
changeset
|
269 |
((thy3 |> Sign.add_consts_i iso_decls |> parent_path flat_names, [], [], [], []), |
5177 | 270 |
hd descr ~~ new_type_names ~~ newTs ~~ constr_syntax); |
271 |
||
272 |
(*********** isomorphisms for new types (introduced by typedef) ***********) |
|
273 |
||
6427 | 274 |
val _ = message "Proving isomorphism properties ..."; |
5177 | 275 |
|
21021 | 276 |
val newT_iso_axms = map (fn (_, td) => |
277 |
(collect_simp (#Abs_inverse td), #Rep_inverse td, |
|
278 |
collect_simp (#Rep td))) typedefs; |
|
5177 | 279 |
|
21021 | 280 |
val newT_iso_inj_thms = map (fn (_, td) => |
281 |
(collect_simp (#Abs_inject td) RS iffD1, #Rep_inject td RS iffD1)) typedefs; |
|
5177 | 282 |
|
283 |
(********* isomorphisms between existing types and "unfolded" types *******) |
|
284 |
||
285 |
(*---------------------------------------------------------------------*) |
|
286 |
(* isomorphisms are defined using primrec-combinators: *) |
|
287 |
(* generate appropriate functions for instantiating primrec-combinator *) |
|
288 |
(* *) |
|
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changeset
|
289 |
(* e.g. dt_Rep_i = list_rec ... (%h t y. In1 (Scons (Leaf h) y)) *) |
5177 | 290 |
(* *) |
291 |
(* also generate characteristic equations for isomorphisms *) |
|
292 |
(* *) |
|
13641
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berghofe
parents:
13585
diff
changeset
|
293 |
(* e.g. dt_Rep_i (cons h t) = In1 (Scons (dt_Rep_j h) (dt_Rep_i t)) *) |
5177 | 294 |
(*---------------------------------------------------------------------*) |
295 |
||
296 |
fun make_iso_def k ks n ((fs, eqns, i), (cname, cargs)) = |
|
297 |
let |
|
298 |
val argTs = map (typ_of_dtyp descr' sorts) cargs; |
|
15570 | 299 |
val T = List.nth (recTs, k); |
300 |
val rep_name = List.nth (all_rep_names, k); |
|
5177 | 301 |
val rep_const = Const (rep_name, T --> Univ_elT); |
302 |
val constr = Const (cname, argTs ---> T); |
|
303 |
||
7015
85be09eb136c
- Datatype package now also supports arbitrarily branching datatypes
berghofe
parents:
6522
diff
changeset
|
304 |
fun process_arg ks' ((i2, i2', ts, Ts), dt) = |
13641
63d1790a43ed
Reimplemented parts of datatype package dealing with datatypes involving
berghofe
parents:
13585
diff
changeset
|
305 |
let |
63d1790a43ed
Reimplemented parts of datatype package dealing with datatypes involving
berghofe
parents:
13585
diff
changeset
|
306 |
val T' = typ_of_dtyp descr' sorts dt; |
63d1790a43ed
Reimplemented parts of datatype package dealing with datatypes involving
berghofe
parents:
13585
diff
changeset
|
307 |
val (Us, U) = strip_type T' |
63d1790a43ed
Reimplemented parts of datatype package dealing with datatypes involving
berghofe
parents:
13585
diff
changeset
|
308 |
in (case strip_dtyp dt of |
63d1790a43ed
Reimplemented parts of datatype package dealing with datatypes involving
berghofe
parents:
13585
diff
changeset
|
309 |
(_, DtRec j) => if j mem ks' then |
15574
b1d1b5bfc464
Removed practically all references to Library.foldr.
skalberg
parents:
15570
diff
changeset
|
310 |
(i2 + 1, i2' + 1, ts @ [mk_lim (app_bnds |
b1d1b5bfc464
Removed practically all references to Library.foldr.
skalberg
parents:
15570
diff
changeset
|
311 |
(mk_Free "y" (Us ---> Univ_elT) i2') (length Us)) Us], |
13641
63d1790a43ed
Reimplemented parts of datatype package dealing with datatypes involving
berghofe
parents:
13585
diff
changeset
|
312 |
Ts @ [Us ---> Univ_elT]) |
5177 | 313 |
else |
15574
b1d1b5bfc464
Removed practically all references to Library.foldr.
skalberg
parents:
15570
diff
changeset
|
314 |
(i2 + 1, i2', ts @ [mk_lim |
b1d1b5bfc464
Removed practically all references to Library.foldr.
skalberg
parents:
15570
diff
changeset
|
315 |
(Const (List.nth (all_rep_names, j), U --> Univ_elT) $ |
b1d1b5bfc464
Removed practically all references to Library.foldr.
skalberg
parents:
15570
diff
changeset
|
316 |
app_bnds (mk_Free "x" T' i2) (length Us)) Us], Ts) |
7015
85be09eb136c
- Datatype package now also supports arbitrarily branching datatypes
berghofe
parents:
6522
diff
changeset
|
317 |
| _ => (i2 + 1, i2', ts @ [Leaf $ mk_inj T' (mk_Free "x" T' i2)], Ts)) |
5177 | 318 |
end; |
319 |
||
15570 | 320 |
val (i2, i2', ts, Ts) = Library.foldl (process_arg ks) ((1, 1, [], []), cargs); |
5177 | 321 |
val xs = map (uncurry (mk_Free "x")) (argTs ~~ (1 upto (i2 - 1))); |
7015
85be09eb136c
- Datatype package now also supports arbitrarily branching datatypes
berghofe
parents:
6522
diff
changeset
|
322 |
val ys = map (uncurry (mk_Free "y")) (Ts ~~ (1 upto (i2' - 1))); |
5177 | 323 |
val f = list_abs_free (map dest_Free (xs @ ys), mk_univ_inj ts n i); |
324 |
||
15570 | 325 |
val (_, _, ts', _) = Library.foldl (process_arg []) ((1, 1, [], []), cargs); |
5177 | 326 |
val eqn = HOLogic.mk_Trueprop (HOLogic.mk_eq |
327 |
(rep_const $ list_comb (constr, xs), mk_univ_inj ts' n i)) |
|
328 |
||
329 |
in (fs @ [f], eqns @ [eqn], i + 1) end; |
|
330 |
||
331 |
(* define isomorphisms for all mutually recursive datatypes in list ds *) |
|
332 |
||
333 |
fun make_iso_defs (ds, (thy, char_thms)) = |
|
334 |
let |
|
335 |
val ks = map fst ds; |
|
336 |
val (_, (tname, _, _)) = hd ds; |
|
17412 | 337 |
val {rec_rewrites, rec_names, ...} = the (Symtab.lookup dt_info tname); |
5177 | 338 |
|
339 |
fun process_dt ((fs, eqns, isos), (k, (tname, _, constrs))) = |
|
340 |
let |
|
15570 | 341 |
val (fs', eqns', _) = Library.foldl (make_iso_def k ks (length constrs)) |
5177 | 342 |
((fs, eqns, 1), constrs); |
15570 | 343 |
val iso = (List.nth (recTs, k), List.nth (all_rep_names, k)) |
5177 | 344 |
in (fs', eqns', isos @ [iso]) end; |
345 |
||
15570 | 346 |
val (fs, eqns, isos) = Library.foldl process_dt (([], [], []), ds); |
5177 | 347 |
val fTs = map fastype_of fs; |
348 |
val defs = map (fn (rec_name, (T, iso_name)) => ((Sign.base_name iso_name) ^ "_def", |
|
27330 | 349 |
Logic.mk_equals (Const (iso_name, T --> Univ_elT), |
350 |
list_comb (Const (rec_name, fTs @ [T] ---> Univ_elT), fs)))) (rec_names ~~ isos); |
|
27691
ce171cbd4b93
PureThy: dropped note_thmss_qualified, dropped _i suffix
haftmann
parents:
27330
diff
changeset
|
351 |
val (def_thms, thy') = (PureThy.add_defs false o map Thm.no_attributes) defs thy; |
5177 | 352 |
|
353 |
(* prove characteristic equations *) |
|
354 |
||
5553 | 355 |
val rewrites = def_thms @ (map mk_meta_eq rec_rewrites); |
26531
96e82c7861fa
- use SkipProof.prove_global instead of Goal.prove_global
berghofe
parents:
26475
diff
changeset
|
356 |
val char_thms' = map (fn eqn => SkipProof.prove_global thy' [] [] eqn |
20046 | 357 |
(fn _ => EVERY [rewrite_goals_tac rewrites, rtac refl 1])) eqns; |
5177 | 358 |
|
359 |
in (thy', char_thms' @ char_thms) end; |
|
360 |
||
15574
b1d1b5bfc464
Removed practically all references to Library.foldr.
skalberg
parents:
15570
diff
changeset
|
361 |
val (thy5, iso_char_thms) = foldr make_iso_defs |
b1d1b5bfc464
Removed practically all references to Library.foldr.
skalberg
parents:
15570
diff
changeset
|
362 |
(add_path flat_names big_name thy4, []) (tl descr); |
5177 | 363 |
|
364 |
(* prove isomorphism properties *) |
|
365 |
||
7015
85be09eb136c
- Datatype package now also supports arbitrarily branching datatypes
berghofe
parents:
6522
diff
changeset
|
366 |
fun mk_funs_inv thm = |
85be09eb136c
- Datatype package now also supports arbitrarily branching datatypes
berghofe
parents:
6522
diff
changeset
|
367 |
let |
26626
c6231d64d264
rep_cterm/rep_thm: no longer dereference theory_ref;
wenzelm
parents:
26531
diff
changeset
|
368 |
val thy = Thm.theory_of_thm thm; |
c6231d64d264
rep_cterm/rep_thm: no longer dereference theory_ref;
wenzelm
parents:
26531
diff
changeset
|
369 |
val prop = Thm.prop_of thm; |
21021 | 370 |
val _ $ (_ $ ((S as Const (_, Type (_, [U, _]))) $ _ )) $ |
16287 | 371 |
(_ $ (_ $ (r $ (a $ _)) $ _)) = Type.freeze prop; |
13641
63d1790a43ed
Reimplemented parts of datatype package dealing with datatypes involving
berghofe
parents:
13585
diff
changeset
|
372 |
val used = add_term_tfree_names (a, []); |
63d1790a43ed
Reimplemented parts of datatype package dealing with datatypes involving
berghofe
parents:
13585
diff
changeset
|
373 |
|
63d1790a43ed
Reimplemented parts of datatype package dealing with datatypes involving
berghofe
parents:
13585
diff
changeset
|
374 |
fun mk_thm i = |
63d1790a43ed
Reimplemented parts of datatype package dealing with datatypes involving
berghofe
parents:
13585
diff
changeset
|
375 |
let |
63d1790a43ed
Reimplemented parts of datatype package dealing with datatypes involving
berghofe
parents:
13585
diff
changeset
|
376 |
val Ts = map (TFree o rpair HOLogic.typeS) |
20071
8f3e1ddb50e6
replaced Term.variant(list) by Name.variant(_list);
wenzelm
parents:
20046
diff
changeset
|
377 |
(Name.variant_list used (replicate i "'t")); |
13641
63d1790a43ed
Reimplemented parts of datatype package dealing with datatypes involving
berghofe
parents:
13585
diff
changeset
|
378 |
val f = Free ("f", Ts ---> U) |
26531
96e82c7861fa
- use SkipProof.prove_global instead of Goal.prove_global
berghofe
parents:
26475
diff
changeset
|
379 |
in SkipProof.prove_global thy [] [] (Logic.mk_implies |
13641
63d1790a43ed
Reimplemented parts of datatype package dealing with datatypes involving
berghofe
parents:
13585
diff
changeset
|
380 |
(HOLogic.mk_Trueprop (HOLogic.list_all |
21021 | 381 |
(map (pair "x") Ts, S $ app_bnds f i)), |
13641
63d1790a43ed
Reimplemented parts of datatype package dealing with datatypes involving
berghofe
parents:
13585
diff
changeset
|
382 |
HOLogic.mk_Trueprop (HOLogic.mk_eq (list_abs (map (pair "x") Ts, |
17985 | 383 |
r $ (a $ app_bnds f i)), f)))) |
26806 | 384 |
(fn _ => EVERY [REPEAT_DETERM_N i (rtac ext 1), |
385 |
REPEAT (etac allE 1), rtac thm 1, atac 1]) |
|
13641
63d1790a43ed
Reimplemented parts of datatype package dealing with datatypes involving
berghofe
parents:
13585
diff
changeset
|
386 |
end |
63d1790a43ed
Reimplemented parts of datatype package dealing with datatypes involving
berghofe
parents:
13585
diff
changeset
|
387 |
in map (fn r => r RS subst) (thm :: map mk_thm arities) end; |
7015
85be09eb136c
- Datatype package now also supports arbitrarily branching datatypes
berghofe
parents:
6522
diff
changeset
|
388 |
|
5177 | 389 |
(* prove inj dt_Rep_i and dt_Rep_i x : dt_rep_set_i *) |
390 |
||
26806 | 391 |
val fun_congs = map (fn T => make_elim (Drule.instantiate' |
392 |
[SOME (ctyp_of thy5 T)] [] fun_cong)) branchTs; |
|
393 |
||
5177 | 394 |
fun prove_iso_thms (ds, (inj_thms, elem_thms)) = |
395 |
let |
|
396 |
val (_, (tname, _, _)) = hd ds; |
|
17412 | 397 |
val {induction, ...} = the (Symtab.lookup dt_info tname); |
5177 | 398 |
|
399 |
fun mk_ind_concl (i, _) = |
|
400 |
let |
|
15570 | 401 |
val T = List.nth (recTs, i); |
402 |
val Rep_t = Const (List.nth (all_rep_names, i), T --> Univ_elT); |
|
403 |
val rep_set_name = List.nth (rep_set_names, i) |
|
5177 | 404 |
in (HOLogic.all_const T $ Abs ("y", T, HOLogic.imp $ |
405 |
HOLogic.mk_eq (Rep_t $ mk_Free "x" T i, Rep_t $ Bound 0) $ |
|
406 |
HOLogic.mk_eq (mk_Free "x" T i, Bound 0)), |
|
21021 | 407 |
Const (rep_set_name, UnivT') $ (Rep_t $ mk_Free "x" T i)) |
5177 | 408 |
end; |
409 |
||
410 |
val (ind_concl1, ind_concl2) = ListPair.unzip (map mk_ind_concl ds); |
|
411 |
||
5553 | 412 |
val rewrites = map mk_meta_eq iso_char_thms; |
21021 | 413 |
val inj_thms' = map snd newT_iso_inj_thms @ |
26359 | 414 |
map (fn r => r RS @{thm injD}) inj_thms; |
5177 | 415 |
|
26531
96e82c7861fa
- use SkipProof.prove_global instead of Goal.prove_global
berghofe
parents:
26475
diff
changeset
|
416 |
val inj_thm = SkipProof.prove_global thy5 [] [] |
17985 | 417 |
(HOLogic.mk_Trueprop (mk_conj ind_concl1)) (fn _ => EVERY |
25678 | 418 |
[(indtac induction [] THEN_ALL_NEW ObjectLogic.atomize_prems_tac) 1, |
5177 | 419 |
REPEAT (EVERY |
420 |
[rtac allI 1, rtac impI 1, |
|
421 |
exh_tac (exh_thm_of dt_info) 1, |
|
422 |
REPEAT (EVERY |
|
423 |
[hyp_subst_tac 1, |
|
424 |
rewrite_goals_tac rewrites, |
|
425 |
REPEAT (dresolve_tac [In0_inject, In1_inject] 1), |
|
426 |
(eresolve_tac [In0_not_In1 RS notE, In1_not_In0 RS notE] 1) |
|
427 |
ORELSE (EVERY |
|
13641
63d1790a43ed
Reimplemented parts of datatype package dealing with datatypes involving
berghofe
parents:
13585
diff
changeset
|
428 |
[REPEAT (eresolve_tac (Scons_inject :: |
63d1790a43ed
Reimplemented parts of datatype package dealing with datatypes involving
berghofe
parents:
13585
diff
changeset
|
429 |
map make_elim [Leaf_inject, Inl_inject, Inr_inject]) 1), |
63d1790a43ed
Reimplemented parts of datatype package dealing with datatypes involving
berghofe
parents:
13585
diff
changeset
|
430 |
REPEAT (cong_tac 1), rtac refl 1, |
63d1790a43ed
Reimplemented parts of datatype package dealing with datatypes involving
berghofe
parents:
13585
diff
changeset
|
431 |
REPEAT (atac 1 ORELSE (EVERY |
63d1790a43ed
Reimplemented parts of datatype package dealing with datatypes involving
berghofe
parents:
13585
diff
changeset
|
432 |
[REPEAT (rtac ext 1), |
63d1790a43ed
Reimplemented parts of datatype package dealing with datatypes involving
berghofe
parents:
13585
diff
changeset
|
433 |
REPEAT (eresolve_tac (mp :: allE :: |
63d1790a43ed
Reimplemented parts of datatype package dealing with datatypes involving
berghofe
parents:
13585
diff
changeset
|
434 |
map make_elim (Suml_inject :: Sumr_inject :: |
26806 | 435 |
Lim_inject :: inj_thms') @ fun_congs) 1), |
20046 | 436 |
atac 1]))])])])]); |
5177 | 437 |
|
26359 | 438 |
val inj_thms'' = map (fn r => r RS @{thm datatype_injI}) |
6171 | 439 |
(split_conj_thm inj_thm); |
5177 | 440 |
|
6171 | 441 |
val elem_thm = |
26531
96e82c7861fa
- use SkipProof.prove_global instead of Goal.prove_global
berghofe
parents:
26475
diff
changeset
|
442 |
SkipProof.prove_global thy5 [] [] (HOLogic.mk_Trueprop (mk_conj ind_concl2)) |
20046 | 443 |
(fn _ => |
25678 | 444 |
EVERY [(indtac induction [] THEN_ALL_NEW ObjectLogic.atomize_prems_tac) 1, |
20046 | 445 |
rewrite_goals_tac rewrites, |
446 |
REPEAT ((resolve_tac rep_intrs THEN_ALL_NEW |
|
447 |
((REPEAT o etac allE) THEN' ares_tac elem_thms)) 1)]); |
|
5177 | 448 |
|
11471
ba2c252b55ad
- Fixed bug in isomorphism proofs (caused by migration from SOME to THE)
berghofe
parents:
11435
diff
changeset
|
449 |
in (inj_thms'' @ inj_thms, elem_thms @ (split_conj_thm elem_thm)) |
ba2c252b55ad
- Fixed bug in isomorphism proofs (caused by migration from SOME to THE)
berghofe
parents:
11435
diff
changeset
|
450 |
end; |
ba2c252b55ad
- Fixed bug in isomorphism proofs (caused by migration from SOME to THE)
berghofe
parents:
11435
diff
changeset
|
451 |
|
15574
b1d1b5bfc464
Removed practically all references to Library.foldr.
skalberg
parents:
15570
diff
changeset
|
452 |
val (iso_inj_thms_unfolded, iso_elem_thms) = foldr prove_iso_thms |
b1d1b5bfc464
Removed practically all references to Library.foldr.
skalberg
parents:
15570
diff
changeset
|
453 |
([], map #3 newT_iso_axms) (tl descr); |
21021 | 454 |
val iso_inj_thms = map snd newT_iso_inj_thms @ |
26359 | 455 |
map (fn r => r RS @{thm injD}) iso_inj_thms_unfolded; |
11471
ba2c252b55ad
- Fixed bug in isomorphism proofs (caused by migration from SOME to THE)
berghofe
parents:
11435
diff
changeset
|
456 |
|
21021 | 457 |
(* prove dt_rep_set_i x --> x : range dt_Rep_i *) |
11471
ba2c252b55ad
- Fixed bug in isomorphism proofs (caused by migration from SOME to THE)
berghofe
parents:
11435
diff
changeset
|
458 |
|
ba2c252b55ad
- Fixed bug in isomorphism proofs (caused by migration from SOME to THE)
berghofe
parents:
11435
diff
changeset
|
459 |
fun mk_iso_t (((set_name, iso_name), i), T) = |
ba2c252b55ad
- Fixed bug in isomorphism proofs (caused by migration from SOME to THE)
berghofe
parents:
11435
diff
changeset
|
460 |
let val isoT = T --> Univ_elT |
ba2c252b55ad
- Fixed bug in isomorphism proofs (caused by migration from SOME to THE)
berghofe
parents:
11435
diff
changeset
|
461 |
in HOLogic.imp $ |
21021 | 462 |
(Const (set_name, UnivT') $ mk_Free "x" Univ_elT i) $ |
11471
ba2c252b55ad
- Fixed bug in isomorphism proofs (caused by migration from SOME to THE)
berghofe
parents:
11435
diff
changeset
|
463 |
(if i < length newTs then Const ("True", HOLogic.boolT) |
ba2c252b55ad
- Fixed bug in isomorphism proofs (caused by migration from SOME to THE)
berghofe
parents:
11435
diff
changeset
|
464 |
else HOLogic.mk_mem (mk_Free "x" Univ_elT i, |
ba2c252b55ad
- Fixed bug in isomorphism proofs (caused by migration from SOME to THE)
berghofe
parents:
11435
diff
changeset
|
465 |
Const ("image", [isoT, HOLogic.mk_setT T] ---> UnivT) $ |
ba2c252b55ad
- Fixed bug in isomorphism proofs (caused by migration from SOME to THE)
berghofe
parents:
11435
diff
changeset
|
466 |
Const (iso_name, isoT) $ Const ("UNIV", HOLogic.mk_setT T))) |
5177 | 467 |
end; |
468 |
||
11471
ba2c252b55ad
- Fixed bug in isomorphism proofs (caused by migration from SOME to THE)
berghofe
parents:
11435
diff
changeset
|
469 |
val iso_t = HOLogic.mk_Trueprop (mk_conj (map mk_iso_t |
ba2c252b55ad
- Fixed bug in isomorphism proofs (caused by migration from SOME to THE)
berghofe
parents:
11435
diff
changeset
|
470 |
(rep_set_names ~~ all_rep_names ~~ (0 upto (length descr' - 1)) ~~ recTs))); |
ba2c252b55ad
- Fixed bug in isomorphism proofs (caused by migration from SOME to THE)
berghofe
parents:
11435
diff
changeset
|
471 |
|
ba2c252b55ad
- Fixed bug in isomorphism proofs (caused by migration from SOME to THE)
berghofe
parents:
11435
diff
changeset
|
472 |
(* all the theorems are proved by one single simultaneous induction *) |
ba2c252b55ad
- Fixed bug in isomorphism proofs (caused by migration from SOME to THE)
berghofe
parents:
11435
diff
changeset
|
473 |
|
26359 | 474 |
val range_eqs = map (fn r => mk_meta_eq (r RS @{thm range_ex1_eq})) |
13641
63d1790a43ed
Reimplemented parts of datatype package dealing with datatypes involving
berghofe
parents:
13585
diff
changeset
|
475 |
iso_inj_thms_unfolded; |
63d1790a43ed
Reimplemented parts of datatype package dealing with datatypes involving
berghofe
parents:
13585
diff
changeset
|
476 |
|
11471
ba2c252b55ad
- Fixed bug in isomorphism proofs (caused by migration from SOME to THE)
berghofe
parents:
11435
diff
changeset
|
477 |
val iso_thms = if length descr = 1 then [] else |
15570 | 478 |
Library.drop (length newTs, split_conj_thm |
26531
96e82c7861fa
- use SkipProof.prove_global instead of Goal.prove_global
berghofe
parents:
26475
diff
changeset
|
479 |
(SkipProof.prove_global thy5 [] [] iso_t (fn _ => EVERY |
25678 | 480 |
[(indtac rep_induct [] THEN_ALL_NEW ObjectLogic.atomize_prems_tac) 1, |
11471
ba2c252b55ad
- Fixed bug in isomorphism proofs (caused by migration from SOME to THE)
berghofe
parents:
11435
diff
changeset
|
481 |
REPEAT (rtac TrueI 1), |
13641
63d1790a43ed
Reimplemented parts of datatype package dealing with datatypes involving
berghofe
parents:
13585
diff
changeset
|
482 |
rewrite_goals_tac (mk_meta_eq choice_eq :: |
26359 | 483 |
symmetric (mk_meta_eq @{thm expand_fun_eq}) :: range_eqs), |
13641
63d1790a43ed
Reimplemented parts of datatype package dealing with datatypes involving
berghofe
parents:
13585
diff
changeset
|
484 |
rewrite_goals_tac (map symmetric range_eqs), |
11471
ba2c252b55ad
- Fixed bug in isomorphism proofs (caused by migration from SOME to THE)
berghofe
parents:
11435
diff
changeset
|
485 |
REPEAT (EVERY |
13641
63d1790a43ed
Reimplemented parts of datatype package dealing with datatypes involving
berghofe
parents:
13585
diff
changeset
|
486 |
[REPEAT (eresolve_tac ([rangeE, ex1_implies_ex RS exE] @ |
15570 | 487 |
List.concat (map (mk_funs_inv o #1) newT_iso_axms)) 1), |
11471
ba2c252b55ad
- Fixed bug in isomorphism proofs (caused by migration from SOME to THE)
berghofe
parents:
11435
diff
changeset
|
488 |
TRY (hyp_subst_tac 1), |
ba2c252b55ad
- Fixed bug in isomorphism proofs (caused by migration from SOME to THE)
berghofe
parents:
11435
diff
changeset
|
489 |
rtac (sym RS range_eqI) 1, |
20046 | 490 |
resolve_tac iso_char_thms 1])]))); |
11435 | 491 |
|
492 |
val Abs_inverse_thms' = |
|
493 |
map #1 newT_iso_axms @ |
|
18330 | 494 |
map2 (fn r_inj => fn r => f_myinv_f OF [r_inj, r RS mp]) |
495 |
iso_inj_thms_unfolded iso_thms; |
|
11435 | 496 |
|
15570 | 497 |
val Abs_inverse_thms = List.concat (map mk_funs_inv Abs_inverse_thms'); |
5177 | 498 |
|
499 |
(******************* freeness theorems for constructors *******************) |
|
500 |
||
6427 | 501 |
val _ = message "Proving freeness of constructors ..."; |
5177 | 502 |
|
503 |
(* prove theorem Rep_i (Constr_j ...) = Inj_j ... *) |
|
504 |
||
505 |
fun prove_constr_rep_thm eqn = |
|
506 |
let |
|
21021 | 507 |
val inj_thms = map fst newT_iso_inj_thms; |
26359 | 508 |
val rewrites = @{thm o_def} :: constr_defs @ (map (mk_meta_eq o #2) newT_iso_axms) |
26531
96e82c7861fa
- use SkipProof.prove_global instead of Goal.prove_global
berghofe
parents:
26475
diff
changeset
|
509 |
in SkipProof.prove_global thy5 [] [] eqn (fn _ => EVERY |
5177 | 510 |
[resolve_tac inj_thms 1, |
511 |
rewrite_goals_tac rewrites, |
|
21021 | 512 |
rtac refl 3, |
5177 | 513 |
resolve_tac rep_intrs 2, |
20046 | 514 |
REPEAT (resolve_tac iso_elem_thms 1)]) |
5177 | 515 |
end; |
516 |
||
517 |
(*--------------------------------------------------------------*) |
|
518 |
(* constr_rep_thms and rep_congs are used to prove distinctness *) |
|
7015
85be09eb136c
- Datatype package now also supports arbitrarily branching datatypes
berghofe
parents:
6522
diff
changeset
|
519 |
(* of constructors. *) |
5177 | 520 |
(*--------------------------------------------------------------*) |
521 |
||
522 |
val constr_rep_thms = map (map prove_constr_rep_thm) constr_rep_eqns; |
|
523 |
||
524 |
val dist_rewrites = map (fn (rep_thms, dist_lemma) => |
|
525 |
dist_lemma::(rep_thms @ [In0_eq, In1_eq, In0_not_In1, In1_not_In0])) |
|
526 |
(constr_rep_thms ~~ dist_lemmas); |
|
527 |
||
26969
cf3f998d0631
moved case distinction over number of constructors for distinctness rules from DatatypeProp to DatatypeRepProofs
haftmann
parents:
26806
diff
changeset
|
528 |
fun prove_distinct_thms _ _ (_, []) = [] |
cf3f998d0631
moved case distinction over number of constructors for distinctness rules from DatatypeProp to DatatypeRepProofs
haftmann
parents:
26806
diff
changeset
|
529 |
| prove_distinct_thms lim dist_rewrites' (k, ts as _ :: _) = |
cf3f998d0631
moved case distinction over number of constructors for distinctness rules from DatatypeProp to DatatypeRepProofs
haftmann
parents:
26806
diff
changeset
|
530 |
if k >= lim then [] else let |
27002
215d64dc971e
moved distinctness_limit to datatype_rep_proofs.ML
haftmann
parents:
26969
diff
changeset
|
531 |
(*number of constructors < distinctness_limit : C_i ... ~= C_j ...*) |
26969
cf3f998d0631
moved case distinction over number of constructors for distinctness rules from DatatypeProp to DatatypeRepProofs
haftmann
parents:
26806
diff
changeset
|
532 |
fun prove [] = [] |
27300
4cb3101d2bf7
DatatypeProp.make_distincts: only one half of each symmetric pair is constructed
haftmann
parents:
27002
diff
changeset
|
533 |
| prove (t :: ts) = |
26969
cf3f998d0631
moved case distinction over number of constructors for distinctness rules from DatatypeProp to DatatypeRepProofs
haftmann
parents:
26806
diff
changeset
|
534 |
let |
cf3f998d0631
moved case distinction over number of constructors for distinctness rules from DatatypeProp to DatatypeRepProofs
haftmann
parents:
26806
diff
changeset
|
535 |
val dist_thm = SkipProof.prove_global thy5 [] [] t (fn _ => |
cf3f998d0631
moved case distinction over number of constructors for distinctness rules from DatatypeProp to DatatypeRepProofs
haftmann
parents:
26806
diff
changeset
|
536 |
EVERY [simp_tac (HOL_ss addsimps dist_rewrites') 1]) |
cf3f998d0631
moved case distinction over number of constructors for distinctness rules from DatatypeProp to DatatypeRepProofs
haftmann
parents:
26806
diff
changeset
|
537 |
in dist_thm :: standard (dist_thm RS not_sym) :: prove ts end; |
cf3f998d0631
moved case distinction over number of constructors for distinctness rules from DatatypeProp to DatatypeRepProofs
haftmann
parents:
26806
diff
changeset
|
538 |
in prove ts end; |
7015
85be09eb136c
- Datatype package now also supports arbitrarily branching datatypes
berghofe
parents:
6522
diff
changeset
|
539 |
|
27300
4cb3101d2bf7
DatatypeProp.make_distincts: only one half of each symmetric pair is constructed
haftmann
parents:
27002
diff
changeset
|
540 |
val distinct_thms = DatatypeProp.make_distincts descr sorts |
4cb3101d2bf7
DatatypeProp.make_distincts: only one half of each symmetric pair is constructed
haftmann
parents:
27002
diff
changeset
|
541 |
|> map2 (prove_distinct_thms |
4cb3101d2bf7
DatatypeProp.make_distincts: only one half of each symmetric pair is constructed
haftmann
parents:
27002
diff
changeset
|
542 |
(Config.get_thy thy5 distinctness_limit)) dist_rewrites; |
7015
85be09eb136c
- Datatype package now also supports arbitrarily branching datatypes
berghofe
parents:
6522
diff
changeset
|
543 |
|
85be09eb136c
- Datatype package now also supports arbitrarily branching datatypes
berghofe
parents:
6522
diff
changeset
|
544 |
val simproc_dists = map (fn ((((_, (_, _, constrs)), rep_thms), congr), dists) => |
27002
215d64dc971e
moved distinctness_limit to datatype_rep_proofs.ML
haftmann
parents:
26969
diff
changeset
|
545 |
if length constrs < Config.get_thy thy5 distinctness_limit |
24098
f1eb34ae33af
replaced dtK ref by datatype_distinctness_limit configuration option;
wenzelm
parents:
23590
diff
changeset
|
546 |
then FewConstrs dists |
7015
85be09eb136c
- Datatype package now also supports arbitrarily branching datatypes
berghofe
parents:
6522
diff
changeset
|
547 |
else ManyConstrs (congr, HOL_basic_ss addsimps rep_thms)) (hd descr ~~ |
85be09eb136c
- Datatype package now also supports arbitrarily branching datatypes
berghofe
parents:
6522
diff
changeset
|
548 |
constr_rep_thms ~~ rep_congs ~~ distinct_thms); |
85be09eb136c
- Datatype package now also supports arbitrarily branching datatypes
berghofe
parents:
6522
diff
changeset
|
549 |
|
5177 | 550 |
(* prove injectivity of constructors *) |
551 |
||
552 |
fun prove_constr_inj_thm rep_thms t = |
|
13641
63d1790a43ed
Reimplemented parts of datatype package dealing with datatypes involving
berghofe
parents:
13585
diff
changeset
|
553 |
let val inj_thms = Scons_inject :: (map make_elim |
21021 | 554 |
(iso_inj_thms @ |
13641
63d1790a43ed
Reimplemented parts of datatype package dealing with datatypes involving
berghofe
parents:
13585
diff
changeset
|
555 |
[In0_inject, In1_inject, Leaf_inject, Inl_inject, Inr_inject, |
63d1790a43ed
Reimplemented parts of datatype package dealing with datatypes involving
berghofe
parents:
13585
diff
changeset
|
556 |
Lim_inject, Suml_inject, Sumr_inject])) |
26531
96e82c7861fa
- use SkipProof.prove_global instead of Goal.prove_global
berghofe
parents:
26475
diff
changeset
|
557 |
in SkipProof.prove_global thy5 [] [] t (fn _ => EVERY |
5177 | 558 |
[rtac iffI 1, |
559 |
REPEAT (etac conjE 2), hyp_subst_tac 2, rtac refl 2, |
|
560 |
dresolve_tac rep_congs 1, dtac box_equals 1, |
|
13641
63d1790a43ed
Reimplemented parts of datatype package dealing with datatypes involving
berghofe
parents:
13585
diff
changeset
|
561 |
REPEAT (resolve_tac rep_thms 1), |
5177 | 562 |
REPEAT (eresolve_tac inj_thms 1), |
13641
63d1790a43ed
Reimplemented parts of datatype package dealing with datatypes involving
berghofe
parents:
13585
diff
changeset
|
563 |
REPEAT (ares_tac [conjI] 1 ORELSE (EVERY [REPEAT (rtac ext 1), |
63d1790a43ed
Reimplemented parts of datatype package dealing with datatypes involving
berghofe
parents:
13585
diff
changeset
|
564 |
REPEAT (eresolve_tac (make_elim fun_cong :: inj_thms) 1), |
20046 | 565 |
atac 1]))]) |
5177 | 566 |
end; |
567 |
||
568 |
val constr_inject = map (fn (ts, thms) => map (prove_constr_inj_thm thms) ts) |
|
569 |
((DatatypeProp.make_injs descr sorts) ~~ constr_rep_thms); |
|
570 |
||
18314 | 571 |
val ((constr_inject', distinct_thms'), thy6) = |
572 |
thy5 |
|
573 |
|> parent_path flat_names |
|
574 |
|> store_thmss "inject" new_type_names constr_inject |
|
575 |
||>> store_thmss "distinct" new_type_names distinct_thms; |
|
5177 | 576 |
|
577 |
(*************************** induction theorem ****************************) |
|
578 |
||
6427 | 579 |
val _ = message "Proving induction rule for datatypes ..."; |
5177 | 580 |
|
581 |
val Rep_inverse_thms = (map (fn (_, iso, _) => iso RS subst) newT_iso_axms) @ |
|
11471
ba2c252b55ad
- Fixed bug in isomorphism proofs (caused by migration from SOME to THE)
berghofe
parents:
11435
diff
changeset
|
582 |
(map (fn r => r RS myinv_f_f RS subst) iso_inj_thms_unfolded); |
ba2c252b55ad
- Fixed bug in isomorphism proofs (caused by migration from SOME to THE)
berghofe
parents:
11435
diff
changeset
|
583 |
val Rep_inverse_thms' = map (fn r => r RS myinv_f_f) iso_inj_thms_unfolded; |
5177 | 584 |
|
585 |
fun mk_indrule_lemma ((prems, concls), ((i, _), T)) = |
|
586 |
let |
|
15570 | 587 |
val Rep_t = Const (List.nth (all_rep_names, i), T --> Univ_elT) $ |
5177 | 588 |
mk_Free "x" T i; |
589 |
||
590 |
val Abs_t = if i < length newTs then |
|
22578 | 591 |
Const (Sign.intern_const thy6 |
15570 | 592 |
("Abs_" ^ (List.nth (new_type_names, i))), Univ_elT --> T) |
11435 | 593 |
else Const ("Inductive.myinv", [T --> Univ_elT, Univ_elT] ---> T) $ |
15570 | 594 |
Const (List.nth (all_rep_names, i), T --> Univ_elT) |
5177 | 595 |
|
21021 | 596 |
in (prems @ [HOLogic.imp $ |
597 |
(Const (List.nth (rep_set_names, i), UnivT') $ Rep_t) $ |
|
5177 | 598 |
(mk_Free "P" (T --> HOLogic.boolT) (i + 1) $ (Abs_t $ Rep_t))], |
599 |
concls @ [mk_Free "P" (T --> HOLogic.boolT) (i + 1) $ mk_Free "x" T i]) |
|
600 |
end; |
|
601 |
||
602 |
val (indrule_lemma_prems, indrule_lemma_concls) = |
|
15570 | 603 |
Library.foldl mk_indrule_lemma (([], []), (descr' ~~ recTs)); |
5177 | 604 |
|
22578 | 605 |
val cert = cterm_of thy6; |
5177 | 606 |
|
26531
96e82c7861fa
- use SkipProof.prove_global instead of Goal.prove_global
berghofe
parents:
26475
diff
changeset
|
607 |
val indrule_lemma = SkipProof.prove_global thy6 [] [] |
5177 | 608 |
(Logic.mk_implies |
609 |
(HOLogic.mk_Trueprop (mk_conj indrule_lemma_prems), |
|
17985 | 610 |
HOLogic.mk_Trueprop (mk_conj indrule_lemma_concls))) (fn _ => EVERY |
611 |
[REPEAT (etac conjE 1), |
|
5177 | 612 |
REPEAT (EVERY |
613 |
[TRY (rtac conjI 1), resolve_tac Rep_inverse_thms 1, |
|
20046 | 614 |
etac mp 1, resolve_tac iso_elem_thms 1])]); |
5177 | 615 |
|
8305 | 616 |
val Ps = map head_of (HOLogic.dest_conj (HOLogic.dest_Trueprop (concl_of indrule_lemma))); |
5177 | 617 |
val frees = if length Ps = 1 then [Free ("P", snd (dest_Var (hd Ps)))] else |
618 |
map (Free o apfst fst o dest_Var) Ps; |
|
619 |
val indrule_lemma' = cterm_instantiate (map cert Ps ~~ map cert frees) indrule_lemma; |
|
620 |
||
17985 | 621 |
val dt_induct_prop = DatatypeProp.make_ind descr sorts; |
26531
96e82c7861fa
- use SkipProof.prove_global instead of Goal.prove_global
berghofe
parents:
26475
diff
changeset
|
622 |
val dt_induct = SkipProof.prove_global thy6 [] |
17985 | 623 |
(Logic.strip_imp_prems dt_induct_prop) (Logic.strip_imp_concl dt_induct_prop) |
26711 | 624 |
(fn {prems, ...} => EVERY |
13641
63d1790a43ed
Reimplemented parts of datatype package dealing with datatypes involving
berghofe
parents:
13585
diff
changeset
|
625 |
[rtac indrule_lemma' 1, |
25678 | 626 |
(indtac rep_induct [] THEN_ALL_NEW ObjectLogic.atomize_prems_tac) 1, |
5177 | 627 |
EVERY (map (fn (prem, r) => (EVERY |
13641
63d1790a43ed
Reimplemented parts of datatype package dealing with datatypes involving
berghofe
parents:
13585
diff
changeset
|
628 |
[REPEAT (eresolve_tac Abs_inverse_thms 1), |
5177 | 629 |
simp_tac (HOL_basic_ss addsimps ((symmetric r)::Rep_inverse_thms')) 1, |
13641
63d1790a43ed
Reimplemented parts of datatype package dealing with datatypes involving
berghofe
parents:
13585
diff
changeset
|
630 |
DEPTH_SOLVE_1 (ares_tac [prem] 1 ORELSE etac allE 1)])) |
20046 | 631 |
(prems ~~ (constr_defs @ (map mk_meta_eq iso_char_thms))))]); |
5177 | 632 |
|
18377 | 633 |
val ([dt_induct'], thy7) = |
634 |
thy6 |
|
24712
64ed05609568
proper Sign operations instead of Theory aliases;
wenzelm
parents:
24112
diff
changeset
|
635 |
|> Sign.add_path big_name |
18377 | 636 |
|> PureThy.add_thms [(("induct", dt_induct), [case_names_induct])] |
24712
64ed05609568
proper Sign operations instead of Theory aliases;
wenzelm
parents:
24112
diff
changeset
|
637 |
||> Sign.parent_path; |
5177 | 638 |
|
18314 | 639 |
in |
640 |
((constr_inject', distinct_thms', dist_rewrites, simproc_dists, dt_induct'), thy7) |
|
5177 | 641 |
end; |
642 |
||
643 |
end; |