src/HOL/Nominal/nominal_package.ML
author berghofe
Fri, 28 Apr 2006 15:54:34 +0200
changeset 19494 2e909d5309f4
parent 19489 4441b637871b
child 19635 f7aa7d174343
permissions -rw-r--r--
Renamed "nominal" theory to "Nominal".
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
19494
2e909d5309f4 Renamed "nominal" theory to "Nominal".
berghofe
parents: 19489
diff changeset
     1
(*  Title:      HOL/Nominal/nominal_package.ML
2e909d5309f4 Renamed "nominal" theory to "Nominal".
berghofe
parents: 19489
diff changeset
     2
    ID:         $Id$
2e909d5309f4 Renamed "nominal" theory to "Nominal".
berghofe
parents: 19489
diff changeset
     3
    Author:     Stefan Berghofer and Christian Urban, TU Muenchen
2e909d5309f4 Renamed "nominal" theory to "Nominal".
berghofe
parents: 19489
diff changeset
     4
2e909d5309f4 Renamed "nominal" theory to "Nominal".
berghofe
parents: 19489
diff changeset
     5
Nominal datatype package for Isabelle/HOL.
2e909d5309f4 Renamed "nominal" theory to "Nominal".
berghofe
parents: 19489
diff changeset
     6
*)
17870
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
     7
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
     8
signature NOMINAL_PACKAGE =
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
     9
sig
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
    10
  val add_nominal_datatype : bool -> string list -> (string list * bstring * mixfix *
18068
e8c3d371594e Moved atom stuff to new file nominal_atoms.ML
berghofe
parents: 18067
diff changeset
    11
    (bstring * string list * mixfix) list) list -> theory -> theory
17870
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
    12
end
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
    13
18068
e8c3d371594e Moved atom stuff to new file nominal_atoms.ML
berghofe
parents: 18067
diff changeset
    14
structure NominalPackage : NOMINAL_PACKAGE =
17870
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
    15
struct
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
    16
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
    17
open DatatypeAux;
18068
e8c3d371594e Moved atom stuff to new file nominal_atoms.ML
berghofe
parents: 18067
diff changeset
    18
open NominalAtoms;
17870
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
    19
18016
8f3a80033ba4 Implemented proof of weak induction theorem.
berghofe
parents: 18010
diff changeset
    20
(** FIXME: DatatypePackage should export this function **)
8f3a80033ba4 Implemented proof of weak induction theorem.
berghofe
parents: 18010
diff changeset
    21
8f3a80033ba4 Implemented proof of weak induction theorem.
berghofe
parents: 18010
diff changeset
    22
local
8f3a80033ba4 Implemented proof of weak induction theorem.
berghofe
parents: 18010
diff changeset
    23
8f3a80033ba4 Implemented proof of weak induction theorem.
berghofe
parents: 18010
diff changeset
    24
fun dt_recs (DtTFree _) = []
8f3a80033ba4 Implemented proof of weak induction theorem.
berghofe
parents: 18010
diff changeset
    25
  | dt_recs (DtType (_, dts)) = List.concat (map dt_recs dts)
8f3a80033ba4 Implemented proof of weak induction theorem.
berghofe
parents: 18010
diff changeset
    26
  | dt_recs (DtRec i) = [i];
8f3a80033ba4 Implemented proof of weak induction theorem.
berghofe
parents: 18010
diff changeset
    27
8f3a80033ba4 Implemented proof of weak induction theorem.
berghofe
parents: 18010
diff changeset
    28
fun dt_cases (descr: descr) (_, args, constrs) =
8f3a80033ba4 Implemented proof of weak induction theorem.
berghofe
parents: 18010
diff changeset
    29
  let
8f3a80033ba4 Implemented proof of weak induction theorem.
berghofe
parents: 18010
diff changeset
    30
    fun the_bname i = Sign.base_name (#1 (valOf (AList.lookup (op =) descr i)));
19133
7e84a1a3741c Adapted to Florian's recent changes to the AxClass package.
berghofe
parents: 18759
diff changeset
    31
    val bnames = map the_bname (distinct op = (List.concat (map dt_recs args)));
18016
8f3a80033ba4 Implemented proof of weak induction theorem.
berghofe
parents: 18010
diff changeset
    32
  in map (fn (c, _) => space_implode "_" (Sign.base_name c :: bnames)) constrs end;
8f3a80033ba4 Implemented proof of weak induction theorem.
berghofe
parents: 18010
diff changeset
    33
8f3a80033ba4 Implemented proof of weak induction theorem.
berghofe
parents: 18010
diff changeset
    34
8f3a80033ba4 Implemented proof of weak induction theorem.
berghofe
parents: 18010
diff changeset
    35
fun induct_cases descr =
8f3a80033ba4 Implemented proof of weak induction theorem.
berghofe
parents: 18010
diff changeset
    36
  DatatypeProp.indexify_names (List.concat (map (dt_cases descr) (map #2 descr)));
8f3a80033ba4 Implemented proof of weak induction theorem.
berghofe
parents: 18010
diff changeset
    37
8f3a80033ba4 Implemented proof of weak induction theorem.
berghofe
parents: 18010
diff changeset
    38
fun exhaust_cases descr i = dt_cases descr (valOf (AList.lookup (op =) descr i));
8f3a80033ba4 Implemented proof of weak induction theorem.
berghofe
parents: 18010
diff changeset
    39
8f3a80033ba4 Implemented proof of weak induction theorem.
berghofe
parents: 18010
diff changeset
    40
in
8f3a80033ba4 Implemented proof of weak induction theorem.
berghofe
parents: 18010
diff changeset
    41
8f3a80033ba4 Implemented proof of weak induction theorem.
berghofe
parents: 18010
diff changeset
    42
fun mk_case_names_induct descr = RuleCases.case_names (induct_cases descr);
8f3a80033ba4 Implemented proof of weak induction theorem.
berghofe
parents: 18010
diff changeset
    43
8f3a80033ba4 Implemented proof of weak induction theorem.
berghofe
parents: 18010
diff changeset
    44
fun mk_case_names_exhausts descr new =
8f3a80033ba4 Implemented proof of weak induction theorem.
berghofe
parents: 18010
diff changeset
    45
  map (RuleCases.case_names o exhaust_cases descr o #1)
8f3a80033ba4 Implemented proof of weak induction theorem.
berghofe
parents: 18010
diff changeset
    46
    (List.filter (fn ((_, (name, _, _))) => name mem_string new) descr);
8f3a80033ba4 Implemented proof of weak induction theorem.
berghofe
parents: 18010
diff changeset
    47
8f3a80033ba4 Implemented proof of weak induction theorem.
berghofe
parents: 18010
diff changeset
    48
end;
8f3a80033ba4 Implemented proof of weak induction theorem.
berghofe
parents: 18010
diff changeset
    49
8f3a80033ba4 Implemented proof of weak induction theorem.
berghofe
parents: 18010
diff changeset
    50
(*******************************)
8f3a80033ba4 Implemented proof of weak induction theorem.
berghofe
parents: 18010
diff changeset
    51
17870
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
    52
val (_ $ (_ $ (_ $ (distinct_f $ _) $ _))) = hd (prems_of distinct_lemma);
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
    53
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
    54
fun read_typ sign ((Ts, sorts), str) =
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
    55
  let
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
    56
    val T = Type.no_tvars (Sign.read_typ (sign, (AList.lookup op =)
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
    57
      (map (apfst (rpair ~1)) sorts)) str) handle TYPE (msg, _, _) => error msg
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
    58
  in (Ts @ [T], add_typ_tfrees (T, sorts)) end;
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
    59
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
    60
(** taken from HOL/Tools/datatype_aux.ML **)
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
    61
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
    62
fun indtac indrule indnames i st =
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
    63
  let
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
    64
    val ts = HOLogic.dest_conj (HOLogic.dest_Trueprop (concl_of indrule));
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
    65
    val ts' = HOLogic.dest_conj (HOLogic.dest_Trueprop
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
    66
      (Logic.strip_imp_concl (List.nth (prems_of st, i - 1))));
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
    67
    val getP = if can HOLogic.dest_imp (hd ts) then
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
    68
      (apfst SOME) o HOLogic.dest_imp else pair NONE;
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
    69
    fun abstr (t1, t2) = (case t1 of
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
    70
        NONE => (case filter (fn Free (s, _) => s mem indnames | _ => false)
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
    71
              (term_frees t2) of
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
    72
            [Free (s, T)] => absfree (s, T, t2)
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
    73
          | _ => sys_error "indtac")
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
    74
      | SOME (_ $ t' $ _) => Abs ("x", fastype_of t', abstract_over (t', t2)))
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
    75
    val cert = cterm_of (Thm.sign_of_thm st);
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
    76
    val Ps = map (cert o head_of o snd o getP) ts;
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
    77
    val indrule' = cterm_instantiate (Ps ~~
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
    78
      (map (cert o abstr o getP) ts')) indrule
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
    79
  in
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
    80
    rtac indrule' i st
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
    81
  end;
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
    82
18658
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
    83
fun mk_subgoal i f st =
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
    84
  let
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
    85
    val cg = List.nth (cprems_of st, i - 1);
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
    86
    val g = term_of cg;
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
    87
    val revcut_rl' = Thm.lift_rule cg revcut_rl;
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
    88
    val v = head_of (Logic.strip_assums_concl (hd (prems_of revcut_rl')));
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
    89
    val ps = Logic.strip_params g;
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
    90
    val cert = cterm_of (sign_of_thm st);
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
    91
  in
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
    92
    compose_tac (false,
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
    93
      Thm.instantiate ([], [(cert v, cert (list_abs (ps,
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
    94
        f (rev ps) (Logic.strip_assums_hyp g) (Logic.strip_assums_concl g))))])
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
    95
      revcut_rl', 2) i st
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
    96
  end;
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
    97
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
    98
(** simplification procedure for sorting permutations **)
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
    99
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
   100
val dj_cp = thm "dj_cp";
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
   101
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
   102
fun dest_permT (Type ("fun", [Type ("List.list", [Type ("*", [T, _])]),
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
   103
      Type ("fun", [_, U])])) = (T, U);
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
   104
19494
2e909d5309f4 Renamed "nominal" theory to "Nominal".
berghofe
parents: 19489
diff changeset
   105
fun permTs_of (Const ("Nominal.perm", T) $ t $ u) = fst (dest_permT T) :: permTs_of u
18658
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
   106
  | permTs_of _ = [];
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
   107
19494
2e909d5309f4 Renamed "nominal" theory to "Nominal".
berghofe
parents: 19489
diff changeset
   108
fun perm_simproc' thy ss (Const ("Nominal.perm", T) $ t $ (u as Const ("Nominal.perm", U) $ r $ s)) =
18658
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
   109
      let
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
   110
        val (aT as Type (a, []), S) = dest_permT T;
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
   111
        val (bT as Type (b, []), _) = dest_permT U
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
   112
      in if aT mem permTs_of u andalso aT <> bT then
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
   113
          let
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
   114
            val a' = Sign.base_name a;
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
   115
            val b' = Sign.base_name b;
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
   116
            val cp = PureThy.get_thm thy (Name ("cp_" ^ a' ^ "_" ^ b' ^ "_inst"));
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
   117
            val dj = PureThy.get_thm thy (Name ("dj_" ^ b' ^ "_" ^ a'));
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
   118
            val dj_cp' = [cp, dj] MRS dj_cp;
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
   119
            val cert = SOME o cterm_of thy
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
   120
          in
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
   121
            SOME (mk_meta_eq (Drule.instantiate' [SOME (ctyp_of thy S)]
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
   122
              [cert t, cert r, cert s] dj_cp'))
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
   123
          end
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
   124
        else NONE
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
   125
      end
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
   126
  | perm_simproc' thy ss _ = NONE;
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
   127
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
   128
val perm_simproc =
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
   129
  Simplifier.simproc (the_context ()) "perm_simp" ["pi1 \\<bullet> (pi2 \\<bullet> x)"] perm_simproc';
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
   130
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
   131
val allE_Nil = read_instantiate_sg (the_context()) [("x", "[]")] allE;
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
   132
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
   133
val meta_spec = thm "meta_spec";
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
   134
18582
4f4cc426b440 provide projections of induct_weak, induct_unsafe;
wenzelm
parents: 18579
diff changeset
   135
fun projections rule =
4f4cc426b440 provide projections of induct_weak, induct_unsafe;
wenzelm
parents: 18579
diff changeset
   136
  ProjectRule.projections rule
4f4cc426b440 provide projections of induct_weak, induct_unsafe;
wenzelm
parents: 18579
diff changeset
   137
  |> map (standard #> RuleCases.save rule);
4f4cc426b440 provide projections of induct_weak, induct_unsafe;
wenzelm
parents: 18579
diff changeset
   138
18658
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
   139
fun norm_sort thy = Sorts.norm_sort (snd (#classes (Type.rep_tsig (Sign.tsig_of thy))));
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
   140
17870
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   141
fun gen_add_nominal_datatype prep_typ err flat_names new_type_names dts thy =
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   142
  let
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   143
    (* this theory is used just for parsing *)
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   144
  
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   145
    val tmp_thy = thy |>
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   146
      Theory.copy |>
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   147
      Theory.add_types (map (fn (tvs, tname, mx, _) =>
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   148
        (tname, length tvs, mx)) dts);
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   149
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   150
    val sign = Theory.sign_of tmp_thy;
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   151
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   152
    val atoms = atoms_of thy;
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   153
    val classes = map (NameSpace.map_base (fn s => "pt_" ^ s)) atoms;
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   154
    val cp_classes = List.concat (map (fn atom1 => map (fn atom2 =>
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   155
      Sign.intern_class thy ("cp_" ^ Sign.base_name atom1 ^ "_" ^
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   156
        Sign.base_name atom2)) atoms) atoms);
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   157
    fun augment_sort S = S union classes;
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   158
    val augment_sort_typ = map_type_tfree (fn (s, S) => TFree (s, augment_sort S));
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   159
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   160
    fun prep_constr ((constrs, sorts), (cname, cargs, mx)) =
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   161
      let val (cargs', sorts') = Library.foldl (prep_typ sign) (([], sorts), cargs)
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   162
      in (constrs @ [(cname, cargs', mx)], sorts') end
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   163
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   164
    fun prep_dt_spec ((dts, sorts), (tvs, tname, mx, constrs)) =
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   165
      let val (constrs', sorts') = Library.foldl prep_constr (([], sorts), constrs)
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   166
      in (dts @ [(tvs, tname, mx, constrs')], sorts') end
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   167
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   168
    val (dts', sorts) = Library.foldl prep_dt_spec (([], []), dts);
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   169
    val sorts' = map (apsnd augment_sort) sorts;
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   170
    val tyvars = map #1 dts';
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   171
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   172
    val types_syntax = map (fn (tvs, tname, mx, constrs) => (tname, mx)) dts';
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   173
    val constr_syntax = map (fn (tvs, tname, mx, constrs) =>
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   174
      map (fn (cname, cargs, mx) => (cname, mx)) constrs) dts';
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   175
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   176
    val ps = map (fn (_, n, _, _) =>
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   177
      (Sign.full_name sign n, Sign.full_name sign (n ^ "_Rep"))) dts;
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   178
    val rps = map Library.swap ps;
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   179
19494
2e909d5309f4 Renamed "nominal" theory to "Nominal".
berghofe
parents: 19489
diff changeset
   180
    fun replace_types (Type ("Nominal.ABS", [T, U])) = 
2e909d5309f4 Renamed "nominal" theory to "Nominal".
berghofe
parents: 19489
diff changeset
   181
          Type ("fun", [T, Type ("Nominal.noption", [replace_types U])])
17870
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   182
      | replace_types (Type (s, Ts)) =
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   183
          Type (getOpt (AList.lookup op = ps s, s), map replace_types Ts)
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   184
      | replace_types T = T;
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   185
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   186
    fun replace_types' (Type (s, Ts)) =
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   187
          Type (getOpt (AList.lookup op = rps s, s), map replace_types' Ts)
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   188
      | replace_types' T = T;
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   189
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   190
    val dts'' = map (fn (tvs, tname, mx, constrs) => (tvs, tname ^ "_Rep", NoSyn,
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   191
      map (fn (cname, cargs, mx) => (cname,
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   192
        map (augment_sort_typ o replace_types) cargs, NoSyn)) constrs)) dts';
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   193
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   194
    val new_type_names' = map (fn n => n ^ "_Rep") new_type_names;
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   195
    val full_new_type_names' = map (Sign.full_name (sign_of thy)) new_type_names';
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   196
18045
6d69a4190eb2 1) have adjusted the swapping of the result type
urbanc
parents: 18017
diff changeset
   197
    val ({induction, ...},thy1) =
17870
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   198
      DatatypePackage.add_datatype_i err flat_names new_type_names' dts'' thy;
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   199
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   200
    val SOME {descr, ...} = Symtab.lookup
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   201
      (DatatypePackage.get_datatypes thy1) (hd full_new_type_names');
18107
ee6b4d3af498 Added strong induction theorem (currently only axiomatized!).
berghofe
parents: 18104
diff changeset
   202
    fun nth_dtyp i = typ_of_dtyp descr sorts' (DtRec i);
ee6b4d3af498 Added strong induction theorem (currently only axiomatized!).
berghofe
parents: 18104
diff changeset
   203
17870
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   204
    (**** define permutation functions ****)
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   205
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   206
    val permT = mk_permT (TFree ("'x", HOLogic.typeS));
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   207
    val pi = Free ("pi", permT);
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   208
    val perm_types = map (fn (i, _) =>
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   209
      let val T = nth_dtyp i
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   210
      in permT --> T --> T end) descr;
19494
2e909d5309f4 Renamed "nominal" theory to "Nominal".
berghofe
parents: 19489
diff changeset
   211
    val perm_names = replicate (length new_type_names) "Nominal.perm" @
17870
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   212
      DatatypeProp.indexify_names (map (fn i => Sign.full_name (sign_of thy1)
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   213
        ("perm_" ^ name_of_typ (nth_dtyp i)))
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   214
          (length new_type_names upto length descr - 1));
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   215
    val perm_names_types = perm_names ~~ perm_types;
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   216
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   217
    val perm_eqs = List.concat (map (fn (i, (_, _, constrs)) =>
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   218
      let val T = nth_dtyp i
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   219
      in map (fn (cname, dts) => 
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   220
        let
18107
ee6b4d3af498 Added strong induction theorem (currently only axiomatized!).
berghofe
parents: 18104
diff changeset
   221
          val Ts = map (typ_of_dtyp descr sorts') dts;
17870
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   222
          val names = DatatypeProp.make_tnames Ts;
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   223
          val args = map Free (names ~~ Ts);
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   224
          val c = Const (cname, Ts ---> T);
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   225
          fun perm_arg (dt, x) =
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   226
            let val T = type_of x
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   227
            in if is_rec_type dt then
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   228
                let val (Us, _) = strip_type T
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   229
                in list_abs (map (pair "x") Us,
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   230
                  Const (List.nth (perm_names_types, body_index dt)) $ pi $
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   231
                    list_comb (x, map (fn (i, U) =>
19494
2e909d5309f4 Renamed "nominal" theory to "Nominal".
berghofe
parents: 19489
diff changeset
   232
                      Const ("Nominal.perm", permT --> U --> U) $
17870
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   233
                        (Const ("List.rev", permT --> permT) $ pi) $
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   234
                        Bound i) ((length Us - 1 downto 0) ~~ Us)))
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   235
                end
19494
2e909d5309f4 Renamed "nominal" theory to "Nominal".
berghofe
parents: 19489
diff changeset
   236
              else Const ("Nominal.perm", permT --> T --> T) $ pi $ x
17870
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   237
            end;  
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   238
        in
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   239
          (("", HOLogic.mk_Trueprop (HOLogic.mk_eq
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   240
            (Const (List.nth (perm_names_types, i)) $
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   241
               Free ("pi", mk_permT (TFree ("'x", HOLogic.typeS))) $
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   242
               list_comb (c, args),
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   243
             list_comb (c, map perm_arg (dts ~~ args))))), [])
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   244
        end) constrs
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   245
      end) descr);
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   246
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   247
    val (thy2, perm_simps) = thy1 |>
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   248
      Theory.add_consts_i (map (fn (s, T) => (Sign.base_name s, T, NoSyn))
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   249
        (List.drop (perm_names_types, length new_type_names))) |>
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   250
      PrimrecPackage.add_primrec_i "" perm_eqs;
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   251
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   252
    (**** prove that permutation functions introduced by unfolding are ****)
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   253
    (**** equivalent to already existing permutation functions         ****)
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   254
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   255
    val _ = warning ("length descr: " ^ string_of_int (length descr));
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   256
    val _ = warning ("length new_type_names: " ^ string_of_int (length new_type_names));
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   257
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   258
    val perm_indnames = DatatypeProp.make_tnames (map body_type perm_types);
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   259
    val perm_fun_def = PureThy.get_thm thy2 (Name "perm_fun_def");
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   260
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   261
    val unfolded_perm_eq_thms =
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   262
      if length descr = length new_type_names then []
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   263
      else map standard (List.drop (split_conj_thm
18010
c885c93a9324 Removed legacy prove_goalw_cterm command.
berghofe
parents: 17874
diff changeset
   264
        (Goal.prove thy2 [] []
17870
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   265
          (HOLogic.mk_Trueprop (foldr1 HOLogic.mk_conj
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   266
            (map (fn (c as (s, T), x) =>
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   267
               let val [T1, T2] = binder_types T
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   268
               in HOLogic.mk_eq (Const c $ pi $ Free (x, T2),
19494
2e909d5309f4 Renamed "nominal" theory to "Nominal".
berghofe
parents: 19489
diff changeset
   269
                 Const ("Nominal.perm", T) $ pi $ Free (x, T2))
17870
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   270
               end)
18010
c885c93a9324 Removed legacy prove_goalw_cterm command.
berghofe
parents: 17874
diff changeset
   271
             (perm_names_types ~~ perm_indnames))))
c885c93a9324 Removed legacy prove_goalw_cterm command.
berghofe
parents: 17874
diff changeset
   272
          (fn _ => EVERY [indtac induction perm_indnames 1,
17870
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   273
            ALLGOALS (asm_full_simp_tac
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   274
              (simpset_of thy2 addsimps [perm_fun_def]))])),
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   275
        length new_type_names));
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   276
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   277
    (**** prove [] \<bullet> t = t ****)
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   278
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   279
    val _ = warning "perm_empty_thms";
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   280
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   281
    val perm_empty_thms = List.concat (map (fn a =>
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   282
      let val permT = mk_permT (Type (a, []))
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   283
      in map standard (List.take (split_conj_thm
18010
c885c93a9324 Removed legacy prove_goalw_cterm command.
berghofe
parents: 17874
diff changeset
   284
        (Goal.prove thy2 [] []
17870
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   285
          (HOLogic.mk_Trueprop (foldr1 HOLogic.mk_conj
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   286
            (map (fn ((s, T), x) => HOLogic.mk_eq
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   287
                (Const (s, permT --> T --> T) $
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   288
                   Const ("List.list.Nil", permT) $ Free (x, T),
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   289
                 Free (x, T)))
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   290
             (perm_names ~~
18010
c885c93a9324 Removed legacy prove_goalw_cterm command.
berghofe
parents: 17874
diff changeset
   291
              map body_type perm_types ~~ perm_indnames))))
c885c93a9324 Removed legacy prove_goalw_cterm command.
berghofe
parents: 17874
diff changeset
   292
          (fn _ => EVERY [indtac induction perm_indnames 1,
17870
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   293
            ALLGOALS (asm_full_simp_tac (simpset_of thy2))])),
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   294
        length new_type_names))
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   295
      end)
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   296
      atoms);
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   297
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   298
    (**** prove (pi1 @ pi2) \<bullet> t = pi1 \<bullet> (pi2 \<bullet> t) ****)
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   299
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   300
    val _ = warning "perm_append_thms";
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   301
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   302
    (*FIXME: these should be looked up statically*)
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   303
    val at_pt_inst = PureThy.get_thm thy2 (Name "at_pt_inst");
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   304
    val pt2 = PureThy.get_thm thy2 (Name "pt2");
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   305
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   306
    val perm_append_thms = List.concat (map (fn a =>
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   307
      let
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   308
        val permT = mk_permT (Type (a, []));
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   309
        val pi1 = Free ("pi1", permT);
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   310
        val pi2 = Free ("pi2", permT);
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   311
        val pt_inst = PureThy.get_thm thy2 (Name ("pt_" ^ Sign.base_name a ^ "_inst"));
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   312
        val pt2' = pt_inst RS pt2;
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   313
        val pt2_ax = PureThy.get_thm thy2
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   314
          (Name (NameSpace.map_base (fn s => "pt_" ^ s ^ "2") a));
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   315
      in List.take (map standard (split_conj_thm
18010
c885c93a9324 Removed legacy prove_goalw_cterm command.
berghofe
parents: 17874
diff changeset
   316
        (Goal.prove thy2 [] []
17870
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   317
             (HOLogic.mk_Trueprop (foldr1 HOLogic.mk_conj
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   318
                (map (fn ((s, T), x) =>
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   319
                    let val perm = Const (s, permT --> T --> T)
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   320
                    in HOLogic.mk_eq
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   321
                      (perm $ (Const ("List.op @", permT --> permT --> permT) $
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   322
                         pi1 $ pi2) $ Free (x, T),
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   323
                       perm $ pi1 $ (perm $ pi2 $ Free (x, T)))
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   324
                    end)
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   325
                  (perm_names ~~
18010
c885c93a9324 Removed legacy prove_goalw_cterm command.
berghofe
parents: 17874
diff changeset
   326
                   map body_type perm_types ~~ perm_indnames))))
c885c93a9324 Removed legacy prove_goalw_cterm command.
berghofe
parents: 17874
diff changeset
   327
           (fn _ => EVERY [indtac induction perm_indnames 1,
17870
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   328
              ALLGOALS (asm_full_simp_tac (simpset_of thy2 addsimps [pt2', pt2_ax]))]))),
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   329
         length new_type_names)
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   330
      end) atoms);
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   331
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   332
    (**** prove pi1 ~ pi2 ==> pi1 \<bullet> t = pi2 \<bullet> t ****)
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   333
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   334
    val _ = warning "perm_eq_thms";
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   335
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   336
    val pt3 = PureThy.get_thm thy2 (Name "pt3");
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   337
    val pt3_rev = PureThy.get_thm thy2 (Name "pt3_rev");
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   338
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   339
    val perm_eq_thms = List.concat (map (fn a =>
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   340
      let
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   341
        val permT = mk_permT (Type (a, []));
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   342
        val pi1 = Free ("pi1", permT);
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   343
        val pi2 = Free ("pi2", permT);
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   344
        (*FIXME: not robust - better access these theorems using NominalData?*)
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   345
        val at_inst = PureThy.get_thm thy2 (Name ("at_" ^ Sign.base_name a ^ "_inst"));
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   346
        val pt_inst = PureThy.get_thm thy2 (Name ("pt_" ^ Sign.base_name a ^ "_inst"));
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   347
        val pt3' = pt_inst RS pt3;
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   348
        val pt3_rev' = at_inst RS (pt_inst RS pt3_rev);
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   349
        val pt3_ax = PureThy.get_thm thy2
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   350
          (Name (NameSpace.map_base (fn s => "pt_" ^ s ^ "3") a));
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   351
      in List.take (map standard (split_conj_thm
18010
c885c93a9324 Removed legacy prove_goalw_cterm command.
berghofe
parents: 17874
diff changeset
   352
        (Goal.prove thy2 [] [] (Logic.mk_implies
19494
2e909d5309f4 Renamed "nominal" theory to "Nominal".
berghofe
parents: 19489
diff changeset
   353
             (HOLogic.mk_Trueprop (Const ("Nominal.prm_eq",
17870
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   354
                permT --> permT --> HOLogic.boolT) $ pi1 $ pi2),
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   355
              HOLogic.mk_Trueprop (foldr1 HOLogic.mk_conj
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   356
                (map (fn ((s, T), x) =>
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   357
                    let val perm = Const (s, permT --> T --> T)
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   358
                    in HOLogic.mk_eq
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   359
                      (perm $ pi1 $ Free (x, T),
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   360
                       perm $ pi2 $ Free (x, T))
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   361
                    end)
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   362
                  (perm_names ~~
18010
c885c93a9324 Removed legacy prove_goalw_cterm command.
berghofe
parents: 17874
diff changeset
   363
                   map body_type perm_types ~~ perm_indnames)))))
c885c93a9324 Removed legacy prove_goalw_cterm command.
berghofe
parents: 17874
diff changeset
   364
           (fn _ => EVERY [indtac induction perm_indnames 1,
17870
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   365
              ALLGOALS (asm_full_simp_tac (simpset_of thy2 addsimps [pt3', pt3_rev', pt3_ax]))]))),
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   366
         length new_type_names)
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   367
      end) atoms);
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   368
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   369
    (**** prove pi1 \<bullet> (pi2 \<bullet> t) = (pi1 \<bullet> pi2) \<bullet> (pi1 \<bullet> t) ****)
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   370
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   371
    val cp1 = PureThy.get_thm thy2 (Name "cp1");
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   372
    val dj_cp = PureThy.get_thm thy2 (Name "dj_cp");
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   373
    val pt_perm_compose = PureThy.get_thm thy2 (Name "pt_perm_compose");
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   374
    val pt_perm_compose_rev = PureThy.get_thm thy2 (Name "pt_perm_compose_rev");
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   375
    val dj_perm_perm_forget = PureThy.get_thm thy2 (Name "dj_perm_perm_forget");
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   376
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   377
    fun composition_instance name1 name2 thy =
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   378
      let
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   379
        val name1' = Sign.base_name name1;
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   380
        val name2' = Sign.base_name name2;
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   381
        val cp_class = Sign.intern_class thy ("cp_" ^ name1' ^ "_" ^ name2');
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   382
        val permT1 = mk_permT (Type (name1, []));
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   383
        val permT2 = mk_permT (Type (name2, []));
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   384
        val augment = map_type_tfree
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   385
          (fn (x, S) => TFree (x, cp_class :: S));
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   386
        val Ts = map (augment o body_type) perm_types;
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   387
        val cp_inst = PureThy.get_thm thy
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   388
          (Name ("cp_" ^ name1' ^ "_" ^ name2' ^ "_inst"));
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   389
        val simps = simpset_of thy addsimps (perm_fun_def ::
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   390
          (if name1 <> name2 then
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   391
             let val dj = PureThy.get_thm thy (Name ("dj_" ^ name2' ^ "_" ^ name1'))
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   392
             in [dj RS (cp_inst RS dj_cp), dj RS dj_perm_perm_forget] end
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   393
           else
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   394
             let
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   395
               val at_inst = PureThy.get_thm thy (Name ("at_" ^ name1' ^ "_inst"));
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   396
               val pt_inst = PureThy.get_thm thy (Name ("pt_" ^ name1' ^ "_inst"))
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   397
             in
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   398
               [cp_inst RS cp1 RS sym,
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   399
                at_inst RS (pt_inst RS pt_perm_compose) RS sym,
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   400
                at_inst RS (pt_inst RS pt_perm_compose_rev) RS sym]
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   401
            end))
18010
c885c93a9324 Removed legacy prove_goalw_cterm command.
berghofe
parents: 17874
diff changeset
   402
        val thms = split_conj_thm (standard (Goal.prove thy [] []
17870
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   403
            (HOLogic.mk_Trueprop (foldr1 HOLogic.mk_conj
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   404
              (map (fn ((s, T), x) =>
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   405
                  let
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   406
                    val pi1 = Free ("pi1", permT1);
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   407
                    val pi2 = Free ("pi2", permT2);
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   408
                    val perm1 = Const (s, permT1 --> T --> T);
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   409
                    val perm2 = Const (s, permT2 --> T --> T);
19494
2e909d5309f4 Renamed "nominal" theory to "Nominal".
berghofe
parents: 19489
diff changeset
   410
                    val perm3 = Const ("Nominal.perm", permT1 --> permT2 --> permT2)
17870
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   411
                  in HOLogic.mk_eq
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   412
                    (perm1 $ pi1 $ (perm2 $ pi2 $ Free (x, T)),
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   413
                     perm2 $ (perm3 $ pi1 $ pi2) $ (perm1 $ pi1 $ Free (x, T)))
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   414
                  end)
18010
c885c93a9324 Removed legacy prove_goalw_cterm command.
berghofe
parents: 17874
diff changeset
   415
                (perm_names ~~ Ts ~~ perm_indnames))))
c885c93a9324 Removed legacy prove_goalw_cterm command.
berghofe
parents: 17874
diff changeset
   416
          (fn _ => EVERY [indtac induction perm_indnames 1,
c885c93a9324 Removed legacy prove_goalw_cterm command.
berghofe
parents: 17874
diff changeset
   417
             ALLGOALS (asm_full_simp_tac simps)])))
17870
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   418
      in
19275
3d10de7a8ca7 add_inst_arity_i renamed to prove_arity.
berghofe
parents: 19251
diff changeset
   419
        foldl (fn ((s, tvs), thy) => AxClass.prove_arity
17870
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   420
            (s, replicate (length tvs) (cp_class :: classes), [cp_class])
19133
7e84a1a3741c Adapted to Florian's recent changes to the AxClass package.
berghofe
parents: 18759
diff changeset
   421
            (ClassPackage.intro_classes_tac [] THEN ALLGOALS (resolve_tac thms)) thy)
17870
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   422
          thy (full_new_type_names' ~~ tyvars)
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   423
      end;
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   424
18381
246807ef6dfb changed the types in accordance with Florian's changes
urbanc
parents: 18366
diff changeset
   425
    val (perm_thmss,thy3) = thy2 |>
17870
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   426
      fold (fn name1 => fold (composition_instance name1) atoms) atoms |>
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   427
      curry (Library.foldr (fn ((i, (tyname, args, _)), thy) =>
19275
3d10de7a8ca7 add_inst_arity_i renamed to prove_arity.
berghofe
parents: 19251
diff changeset
   428
        AxClass.prove_arity (tyname, replicate (length args) classes, classes)
19133
7e84a1a3741c Adapted to Florian's recent changes to the AxClass package.
berghofe
parents: 18759
diff changeset
   429
        (ClassPackage.intro_classes_tac [] THEN REPEAT (EVERY
17870
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   430
           [resolve_tac perm_empty_thms 1,
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   431
            resolve_tac perm_append_thms 1,
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   432
            resolve_tac perm_eq_thms 1, assume_tac 1])) thy))
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   433
        (List.take (descr, length new_type_names)) |>
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   434
      PureThy.add_thmss
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   435
        [((space_implode "_" new_type_names ^ "_unfolded_perm_eq",
18759
2f55e3e47355 Updated to Isabelle 2006-01-23
krauss
parents: 18707
diff changeset
   436
          unfolded_perm_eq_thms), [Simplifier.simp_add]),
17870
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   437
         ((space_implode "_" new_type_names ^ "_perm_empty",
18759
2f55e3e47355 Updated to Isabelle 2006-01-23
krauss
parents: 18707
diff changeset
   438
          perm_empty_thms), [Simplifier.simp_add]),
17870
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   439
         ((space_implode "_" new_type_names ^ "_perm_append",
18759
2f55e3e47355 Updated to Isabelle 2006-01-23
krauss
parents: 18707
diff changeset
   440
          perm_append_thms), [Simplifier.simp_add]),
17870
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   441
         ((space_implode "_" new_type_names ^ "_perm_eq",
18759
2f55e3e47355 Updated to Isabelle 2006-01-23
krauss
parents: 18707
diff changeset
   442
          perm_eq_thms), [Simplifier.simp_add])];
17870
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   443
  
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   444
    (**** Define representing sets ****)
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   445
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   446
    val _ = warning "representing sets";
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   447
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   448
    val rep_set_names = map (Sign.full_name thy3) (DatatypeProp.indexify_names
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   449
      (map (fn (i, _) => name_of_typ (nth_dtyp i) ^ "_set") descr));
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   450
    val big_rep_name =
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   451
      space_implode "_" (DatatypeProp.indexify_names (List.mapPartial
19494
2e909d5309f4 Renamed "nominal" theory to "Nominal".
berghofe
parents: 19489
diff changeset
   452
        (fn (i, ("Nominal.noption", _, _)) => NONE
17870
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   453
          | (i, _) => SOME (name_of_typ (nth_dtyp i))) descr)) ^ "_set";
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   454
    val _ = warning ("big_rep_name: " ^ big_rep_name);
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   455
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   456
    fun strip_option (dtf as DtType ("fun", [dt, DtRec i])) =
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   457
          (case AList.lookup op = descr i of
19494
2e909d5309f4 Renamed "nominal" theory to "Nominal".
berghofe
parents: 19489
diff changeset
   458
             SOME ("Nominal.noption", _, [(_, [dt']), _]) =>
17870
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   459
               apfst (cons dt) (strip_option dt')
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   460
           | _ => ([], dtf))
19494
2e909d5309f4 Renamed "nominal" theory to "Nominal".
berghofe
parents: 19489
diff changeset
   461
      | strip_option (DtType ("fun", [dt, DtType ("Nominal.noption", [dt'])])) =
18261
1318955d57ac Corrected treatment of non-recursive abstraction types.
berghofe
parents: 18246
diff changeset
   462
          apfst (cons dt) (strip_option dt')
17870
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   463
      | strip_option dt = ([], dt);
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   464
19133
7e84a1a3741c Adapted to Florian's recent changes to the AxClass package.
berghofe
parents: 18759
diff changeset
   465
    val dt_atomTs = distinct op = (map (typ_of_dtyp descr sorts')
18280
45e139675daf Corrected atom class constraints in strong induction rule.
berghofe
parents: 18261
diff changeset
   466
      (List.concat (map (fn (_, (_, _, cs)) => List.concat
45e139675daf Corrected atom class constraints in strong induction rule.
berghofe
parents: 18261
diff changeset
   467
        (map (List.concat o map (fst o strip_option) o snd) cs)) descr)));
45e139675daf Corrected atom class constraints in strong induction rule.
berghofe
parents: 18261
diff changeset
   468
17870
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   469
    fun make_intr s T (cname, cargs) =
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   470
      let
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   471
        fun mk_prem (dt, (j, j', prems, ts)) = 
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   472
          let
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   473
            val (dts, dt') = strip_option dt;
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   474
            val (dts', dt'') = strip_dtyp dt';
18107
ee6b4d3af498 Added strong induction theorem (currently only axiomatized!).
berghofe
parents: 18104
diff changeset
   475
            val Ts = map (typ_of_dtyp descr sorts') dts;
ee6b4d3af498 Added strong induction theorem (currently only axiomatized!).
berghofe
parents: 18104
diff changeset
   476
            val Us = map (typ_of_dtyp descr sorts') dts';
ee6b4d3af498 Added strong induction theorem (currently only axiomatized!).
berghofe
parents: 18104
diff changeset
   477
            val T = typ_of_dtyp descr sorts' dt'';
17870
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   478
            val free = mk_Free "x" (Us ---> T) j;
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   479
            val free' = app_bnds free (length Us);
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   480
            fun mk_abs_fun (T, (i, t)) =
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   481
              let val U = fastype_of t
19494
2e909d5309f4 Renamed "nominal" theory to "Nominal".
berghofe
parents: 19489
diff changeset
   482
              in (i + 1, Const ("Nominal.abs_fun", [T, U, T] --->
2e909d5309f4 Renamed "nominal" theory to "Nominal".
berghofe
parents: 19489
diff changeset
   483
                Type ("Nominal.noption", [U])) $ mk_Free "y" T i $ t)
17870
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   484
              end
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   485
          in (j + 1, j' + length Ts,
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   486
            case dt'' of
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   487
                DtRec k => list_all (map (pair "x") Us,
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   488
                  HOLogic.mk_Trueprop (HOLogic.mk_mem (free',
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   489
                    Const (List.nth (rep_set_names, k),
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   490
                      HOLogic.mk_setT T)))) :: prems
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   491
              | _ => prems,
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   492
            snd (foldr mk_abs_fun (j', free) Ts) :: ts)
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   493
          end;
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   494
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   495
        val (_, _, prems, ts) = foldr mk_prem (1, 1, [], []) cargs;
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   496
        val concl = HOLogic.mk_Trueprop (HOLogic.mk_mem
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   497
          (list_comb (Const (cname, map fastype_of ts ---> T), ts),
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   498
           Const (s, HOLogic.mk_setT T)))
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   499
      in Logic.list_implies (prems, concl)
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   500
      end;
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   501
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   502
    val (intr_ts, ind_consts) =
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   503
      apfst List.concat (ListPair.unzip (List.mapPartial
19494
2e909d5309f4 Renamed "nominal" theory to "Nominal".
berghofe
parents: 19489
diff changeset
   504
        (fn ((_, ("Nominal.noption", _, _)), _) => NONE
17870
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   505
          | ((i, (_, _, constrs)), rep_set_name) =>
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   506
              let val T = nth_dtyp i
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   507
              in SOME (map (make_intr rep_set_name T) constrs,
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   508
                Const (rep_set_name, HOLogic.mk_setT T))
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   509
              end)
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   510
                (descr ~~ rep_set_names)));
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   511
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   512
    val (thy4, {raw_induct = rep_induct, intrs = rep_intrs, ...}) =
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   513
      setmp InductivePackage.quiet_mode false
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   514
        (InductivePackage.add_inductive_i false true big_rep_name false true false
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   515
           ind_consts (map (fn x => (("", x), [])) intr_ts) []) thy3;
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   516
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   517
    (**** Prove that representing set is closed under permutation ****)
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   518
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   519
    val _ = warning "proving closure under permutation...";
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   520
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   521
    val perm_indnames' = List.mapPartial
19494
2e909d5309f4 Renamed "nominal" theory to "Nominal".
berghofe
parents: 19489
diff changeset
   522
      (fn (x, (_, ("Nominal.noption", _, _))) => NONE | (x, _) => SOME x)
17870
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   523
      (perm_indnames ~~ descr);
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   524
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   525
    fun mk_perm_closed name = map (fn th => standard (th RS mp))
18010
c885c93a9324 Removed legacy prove_goalw_cterm command.
berghofe
parents: 17874
diff changeset
   526
      (List.take (split_conj_thm (Goal.prove thy4 [] []
17870
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   527
        (HOLogic.mk_Trueprop (foldr1 HOLogic.mk_conj (map
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   528
           (fn (S, x) =>
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   529
              let
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   530
                val S = map_term_types (map_type_tfree
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   531
                  (fn (s, cs) => TFree (s, cs union cp_classes))) S;
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   532
                val T = HOLogic.dest_setT (fastype_of S);
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   533
                val permT = mk_permT (Type (name, []))
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   534
              in HOLogic.mk_imp (HOLogic.mk_mem (Free (x, T), S),
19494
2e909d5309f4 Renamed "nominal" theory to "Nominal".
berghofe
parents: 19489
diff changeset
   535
                HOLogic.mk_mem (Const ("Nominal.perm", permT --> T --> T) $
17870
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   536
                  Free ("pi", permT) $ Free (x, T), S))
18010
c885c93a9324 Removed legacy prove_goalw_cterm command.
berghofe
parents: 17874
diff changeset
   537
              end) (ind_consts ~~ perm_indnames'))))
c885c93a9324 Removed legacy prove_goalw_cterm command.
berghofe
parents: 17874
diff changeset
   538
        (fn _ => EVERY (* CU: added perm_fun_def in the final tactic in order to deal with funs *)
17870
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   539
           [indtac rep_induct [] 1,
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   540
            ALLGOALS (simp_tac (simpset_of thy4 addsimps
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   541
              (symmetric perm_fun_def :: PureThy.get_thms thy4 (Name ("abs_perm"))))),
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   542
            ALLGOALS (resolve_tac rep_intrs 
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   543
               THEN_ALL_NEW (asm_full_simp_tac (simpset_of thy4 addsimps [perm_fun_def])))])),
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   544
        length new_type_names));
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   545
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   546
    (* FIXME: theorems are stored in database for testing only *)
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   547
    val perm_closed_thmss = map mk_perm_closed atoms;
18381
246807ef6dfb changed the types in accordance with Florian's changes
urbanc
parents: 18366
diff changeset
   548
    val (_,thy5) = PureThy.add_thmss [(("perm_closed", List.concat perm_closed_thmss), [])] thy4;
17870
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   549
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   550
    (**** typedef ****)
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   551
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   552
    val _ = warning "defining type...";
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   553
18366
78b4f225b640 Adapted to new type of PureThy.add_defs_i.
berghofe
parents: 18350
diff changeset
   554
    val (typedefs, thy6) =
78b4f225b640 Adapted to new type of PureThy.add_defs_i.
berghofe
parents: 18350
diff changeset
   555
      fold_map (fn ((((name, mx), tvs), c), name') => fn thy =>
17870
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   556
        setmp TypedefPackage.quiet_mode true
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   557
          (TypedefPackage.add_typedef_i false (SOME name') (name, tvs, mx) c NONE
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   558
            (rtac exI 1 THEN
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   559
              QUIET_BREADTH_FIRST (has_fewer_prems 1)
19403
5c15cd397a82 Adapted to changed type of add_typedef_i.
berghofe
parents: 19322
diff changeset
   560
              (resolve_tac rep_intrs 1))) thy |> (fn (r, thy) =>
17870
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   561
        let
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   562
          val permT = mk_permT (TFree (variant tvs "'a", HOLogic.typeS));
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   563
          val pi = Free ("pi", permT);
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   564
          val tvs' = map (fn s => TFree (s, the (AList.lookup op = sorts' s))) tvs;
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   565
          val T = Type (Sign.intern_type thy name, tvs');
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   566
          val Const (_, Type (_, [U])) = c
18366
78b4f225b640 Adapted to new type of PureThy.add_defs_i.
berghofe
parents: 18350
diff changeset
   567
        in apfst (pair r o hd)
17870
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   568
          (PureThy.add_defs_i true [(("prm_" ^ name ^ "_def", Logic.mk_equals
19494
2e909d5309f4 Renamed "nominal" theory to "Nominal".
berghofe
parents: 19489
diff changeset
   569
            (Const ("Nominal.perm", permT --> T --> T) $ pi $ Free ("x", T),
17870
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   570
             Const (Sign.intern_const thy ("Abs_" ^ name), U --> T) $
19494
2e909d5309f4 Renamed "nominal" theory to "Nominal".
berghofe
parents: 19489
diff changeset
   571
               (Const ("Nominal.perm", permT --> U --> U) $ pi $
17870
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   572
                 (Const (Sign.intern_const thy ("Rep_" ^ name), T --> U) $
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   573
                   Free ("x", T))))), [])] thy)
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   574
        end))
18366
78b4f225b640 Adapted to new type of PureThy.add_defs_i.
berghofe
parents: 18350
diff changeset
   575
          (types_syntax ~~ tyvars ~~
78b4f225b640 Adapted to new type of PureThy.add_defs_i.
berghofe
parents: 18350
diff changeset
   576
            (List.take (ind_consts, length new_type_names)) ~~ new_type_names) thy5;
17870
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   577
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   578
    val perm_defs = map snd typedefs;
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   579
    val Abs_inverse_thms = map (#Abs_inverse o fst) typedefs;
18016
8f3a80033ba4 Implemented proof of weak induction theorem.
berghofe
parents: 18010
diff changeset
   580
    val Rep_inverse_thms = map (#Rep_inverse o fst) typedefs;
17870
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   581
    val Rep_thms = map (#Rep o fst) typedefs;
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   582
18016
8f3a80033ba4 Implemented proof of weak induction theorem.
berghofe
parents: 18010
diff changeset
   583
    val big_name = space_implode "_" new_type_names;
8f3a80033ba4 Implemented proof of weak induction theorem.
berghofe
parents: 18010
diff changeset
   584
8f3a80033ba4 Implemented proof of weak induction theorem.
berghofe
parents: 18010
diff changeset
   585
17870
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   586
    (** prove that new types are in class pt_<name> **)
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   587
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   588
    val _ = warning "prove that new types are in class pt_<name> ...";
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   589
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   590
    fun pt_instance ((class, atom), perm_closed_thms) =
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   591
      fold (fn (((({Abs_inverse, Rep_inverse, Rep, ...},
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   592
        perm_def), name), tvs), perm_closed) => fn thy =>
19275
3d10de7a8ca7 add_inst_arity_i renamed to prove_arity.
berghofe
parents: 19251
diff changeset
   593
          AxClass.prove_arity
17870
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   594
            (Sign.intern_type thy name,
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   595
              replicate (length tvs) (classes @ cp_classes), [class])
19133
7e84a1a3741c Adapted to Florian's recent changes to the AxClass package.
berghofe
parents: 18759
diff changeset
   596
            (EVERY [ClassPackage.intro_classes_tac [],
17870
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   597
              rewrite_goals_tac [perm_def],
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   598
              asm_full_simp_tac (simpset_of thy addsimps [Rep_inverse]) 1,
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   599
              asm_full_simp_tac (simpset_of thy addsimps
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   600
                [Rep RS perm_closed RS Abs_inverse]) 1,
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   601
              asm_full_simp_tac (HOL_basic_ss addsimps [PureThy.get_thm thy
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   602
                (Name ("pt_" ^ Sign.base_name atom ^ "3"))]) 1]) thy)
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   603
        (typedefs ~~ new_type_names ~~ tyvars ~~ perm_closed_thms);
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   604
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   605
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   606
    (** prove that new types are in class cp_<name1>_<name2> **)
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   607
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   608
    val _ = warning "prove that new types are in class cp_<name1>_<name2> ...";
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   609
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   610
    fun cp_instance (atom1, perm_closed_thms1) (atom2, perm_closed_thms2) thy =
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   611
      let
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   612
        val name = "cp_" ^ Sign.base_name atom1 ^ "_" ^ Sign.base_name atom2;
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   613
        val class = Sign.intern_class thy name;
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   614
        val cp1' = PureThy.get_thm thy (Name (name ^ "_inst")) RS cp1
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   615
      in fold (fn ((((({Abs_inverse, Rep_inverse, Rep, ...},
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   616
        perm_def), name), tvs), perm_closed1), perm_closed2) => fn thy =>
19275
3d10de7a8ca7 add_inst_arity_i renamed to prove_arity.
berghofe
parents: 19251
diff changeset
   617
          AxClass.prove_arity
17870
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   618
            (Sign.intern_type thy name,
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   619
              replicate (length tvs) (classes @ cp_classes), [class])
19133
7e84a1a3741c Adapted to Florian's recent changes to the AxClass package.
berghofe
parents: 18759
diff changeset
   620
            (EVERY [ClassPackage.intro_classes_tac [],
17870
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   621
              rewrite_goals_tac [perm_def],
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   622
              asm_full_simp_tac (simpset_of thy addsimps
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   623
                ((Rep RS perm_closed1 RS Abs_inverse) ::
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   624
                 (if atom1 = atom2 then []
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   625
                  else [Rep RS perm_closed2 RS Abs_inverse]))) 1,
18016
8f3a80033ba4 Implemented proof of weak induction theorem.
berghofe
parents: 18010
diff changeset
   626
              cong_tac 1,
17870
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   627
              rtac refl 1,
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   628
              rtac cp1' 1]) thy)
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   629
        (typedefs ~~ new_type_names ~~ tyvars ~~ perm_closed_thms1 ~~
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   630
          perm_closed_thms2) thy
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   631
      end;
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   632
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   633
    val thy7 = fold (fn x => fn thy => thy |>
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   634
      pt_instance x |>
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   635
      fold (cp_instance (apfst snd x)) (atoms ~~ perm_closed_thmss))
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   636
        (classes ~~ atoms ~~ perm_closed_thmss) thy6;
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   637
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   638
    (**** constructors ****)
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   639
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   640
    fun mk_abs_fun (x, t) =
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   641
      let
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   642
        val T = fastype_of x;
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   643
        val U = fastype_of t
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   644
      in
19494
2e909d5309f4 Renamed "nominal" theory to "Nominal".
berghofe
parents: 19489
diff changeset
   645
        Const ("Nominal.abs_fun", T --> U --> T -->
2e909d5309f4 Renamed "nominal" theory to "Nominal".
berghofe
parents: 19489
diff changeset
   646
          Type ("Nominal.noption", [U])) $ x $ t
17870
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   647
      end;
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   648
18016
8f3a80033ba4 Implemented proof of weak induction theorem.
berghofe
parents: 18010
diff changeset
   649
    val (ty_idxs, _) = foldl
19494
2e909d5309f4 Renamed "nominal" theory to "Nominal".
berghofe
parents: 19489
diff changeset
   650
      (fn ((i, ("Nominal.noption", _, _)), p) => p
18016
8f3a80033ba4 Implemented proof of weak induction theorem.
berghofe
parents: 18010
diff changeset
   651
        | ((i, _), (ty_idxs, j)) => (ty_idxs @ [(i, j)], j + 1)) ([], 0) descr;
8f3a80033ba4 Implemented proof of weak induction theorem.
berghofe
parents: 18010
diff changeset
   652
8f3a80033ba4 Implemented proof of weak induction theorem.
berghofe
parents: 18010
diff changeset
   653
    fun reindex (DtType (s, dts)) = DtType (s, map reindex dts)
8f3a80033ba4 Implemented proof of weak induction theorem.
berghofe
parents: 18010
diff changeset
   654
      | reindex (DtRec i) = DtRec (the (AList.lookup op = ty_idxs i))
8f3a80033ba4 Implemented proof of weak induction theorem.
berghofe
parents: 18010
diff changeset
   655
      | reindex dt = dt;
8f3a80033ba4 Implemented proof of weak induction theorem.
berghofe
parents: 18010
diff changeset
   656
8f3a80033ba4 Implemented proof of weak induction theorem.
berghofe
parents: 18010
diff changeset
   657
    fun strip_suffix i s = implode (List.take (explode s, size s - i));
8f3a80033ba4 Implemented proof of weak induction theorem.
berghofe
parents: 18010
diff changeset
   658
8f3a80033ba4 Implemented proof of weak induction theorem.
berghofe
parents: 18010
diff changeset
   659
    (** strips the "_Rep" in type names *)
18045
6d69a4190eb2 1) have adjusted the swapping of the result type
urbanc
parents: 18017
diff changeset
   660
    fun strip_nth_name i s = 
6d69a4190eb2 1) have adjusted the swapping of the result type
urbanc
parents: 18017
diff changeset
   661
      let val xs = NameSpace.unpack s; 
6d69a4190eb2 1) have adjusted the swapping of the result type
urbanc
parents: 18017
diff changeset
   662
      in NameSpace.pack (Library.nth_map (length xs - i) (strip_suffix 4) xs) end;
18016
8f3a80033ba4 Implemented proof of weak induction theorem.
berghofe
parents: 18010
diff changeset
   663
18107
ee6b4d3af498 Added strong induction theorem (currently only axiomatized!).
berghofe
parents: 18104
diff changeset
   664
    val (descr'', ndescr) = ListPair.unzip (List.mapPartial
19494
2e909d5309f4 Renamed "nominal" theory to "Nominal".
berghofe
parents: 19489
diff changeset
   665
      (fn (i, ("Nominal.noption", _, _)) => NONE
18107
ee6b4d3af498 Added strong induction theorem (currently only axiomatized!).
berghofe
parents: 18104
diff changeset
   666
        | (i, (s, dts, constrs)) =>
ee6b4d3af498 Added strong induction theorem (currently only axiomatized!).
berghofe
parents: 18104
diff changeset
   667
             let
ee6b4d3af498 Added strong induction theorem (currently only axiomatized!).
berghofe
parents: 18104
diff changeset
   668
               val SOME index = AList.lookup op = ty_idxs i;
ee6b4d3af498 Added strong induction theorem (currently only axiomatized!).
berghofe
parents: 18104
diff changeset
   669
               val (constrs1, constrs2) = ListPair.unzip
ee6b4d3af498 Added strong induction theorem (currently only axiomatized!).
berghofe
parents: 18104
diff changeset
   670
                 (map (fn (cname, cargs) => apfst (pair (strip_nth_name 2 cname))
ee6b4d3af498 Added strong induction theorem (currently only axiomatized!).
berghofe
parents: 18104
diff changeset
   671
                   (foldl_map (fn (dts, dt) =>
ee6b4d3af498 Added strong induction theorem (currently only axiomatized!).
berghofe
parents: 18104
diff changeset
   672
                     let val (dts', dt') = strip_option dt
ee6b4d3af498 Added strong induction theorem (currently only axiomatized!).
berghofe
parents: 18104
diff changeset
   673
                     in (dts @ dts' @ [reindex dt'], (length dts, length dts')) end)
ee6b4d3af498 Added strong induction theorem (currently only axiomatized!).
berghofe
parents: 18104
diff changeset
   674
                       ([], cargs))) constrs)
ee6b4d3af498 Added strong induction theorem (currently only axiomatized!).
berghofe
parents: 18104
diff changeset
   675
             in SOME ((index, (strip_nth_name 1 s,  map reindex dts, constrs1)),
ee6b4d3af498 Added strong induction theorem (currently only axiomatized!).
berghofe
parents: 18104
diff changeset
   676
               (index, constrs2))
ee6b4d3af498 Added strong induction theorem (currently only axiomatized!).
berghofe
parents: 18104
diff changeset
   677
             end) descr);
18045
6d69a4190eb2 1) have adjusted the swapping of the result type
urbanc
parents: 18017
diff changeset
   678
19489
4441b637871b SplitAt -> chop
berghofe
parents: 19403
diff changeset
   679
    val (descr1, descr2) = chop (length new_type_names) descr'';
18016
8f3a80033ba4 Implemented proof of weak induction theorem.
berghofe
parents: 18010
diff changeset
   680
    val descr' = [descr1, descr2];
8f3a80033ba4 Implemented proof of weak induction theorem.
berghofe
parents: 18010
diff changeset
   681
18107
ee6b4d3af498 Added strong induction theorem (currently only axiomatized!).
berghofe
parents: 18104
diff changeset
   682
    val typ_of_dtyp' = replace_types' o typ_of_dtyp descr sorts';
17870
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   683
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   684
    val rep_names = map (fn s =>
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   685
      Sign.intern_const thy7 ("Rep_" ^ s)) new_type_names;
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   686
    val abs_names = map (fn s =>
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   687
      Sign.intern_const thy7 ("Abs_" ^ s)) new_type_names;
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   688
18016
8f3a80033ba4 Implemented proof of weak induction theorem.
berghofe
parents: 18010
diff changeset
   689
    val recTs' = List.mapPartial
19494
2e909d5309f4 Renamed "nominal" theory to "Nominal".
berghofe
parents: 19489
diff changeset
   690
      (fn ((_, ("Nominal.noption", _, _)), T) => NONE
18016
8f3a80033ba4 Implemented proof of weak induction theorem.
berghofe
parents: 18010
diff changeset
   691
        | (_, T) => SOME T) (descr ~~ get_rec_types descr sorts');
18107
ee6b4d3af498 Added strong induction theorem (currently only axiomatized!).
berghofe
parents: 18104
diff changeset
   692
    val recTs = get_rec_types descr'' sorts';
18016
8f3a80033ba4 Implemented proof of weak induction theorem.
berghofe
parents: 18010
diff changeset
   693
    val newTs' = Library.take (length new_type_names, recTs');
8f3a80033ba4 Implemented proof of weak induction theorem.
berghofe
parents: 18010
diff changeset
   694
    val newTs = Library.take (length new_type_names, recTs);
17870
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   695
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   696
    val full_new_type_names = map (Sign.full_name (sign_of thy)) new_type_names;
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   697
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   698
    fun make_constr_def tname T T' ((thy, defs, eqns), ((cname, cargs), (cname', mx))) =
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   699
      let
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   700
        fun constr_arg (dt, (j, l_args, r_args)) =
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   701
          let
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   702
            val x' = mk_Free "x" (typ_of_dtyp' dt) j;
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   703
            val (dts, dt') = strip_option dt;
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   704
            val xs = map (fn (dt, i) => mk_Free "x" (typ_of_dtyp' dt) i)
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   705
              (dts ~~ (j upto j + length dts - 1))
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   706
            val x = mk_Free "x" (typ_of_dtyp' dt') (j + length dts)
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   707
            val (dts', dt'') = strip_dtyp dt'
18261
1318955d57ac Corrected treatment of non-recursive abstraction types.
berghofe
parents: 18246
diff changeset
   708
          in
1318955d57ac Corrected treatment of non-recursive abstraction types.
berghofe
parents: 18246
diff changeset
   709
            (j + length dts + 1,
1318955d57ac Corrected treatment of non-recursive abstraction types.
berghofe
parents: 18246
diff changeset
   710
             xs @ x :: l_args,
1318955d57ac Corrected treatment of non-recursive abstraction types.
berghofe
parents: 18246
diff changeset
   711
             foldr mk_abs_fun
1318955d57ac Corrected treatment of non-recursive abstraction types.
berghofe
parents: 18246
diff changeset
   712
               (case dt'' of
1318955d57ac Corrected treatment of non-recursive abstraction types.
berghofe
parents: 18246
diff changeset
   713
                  DtRec k => if k < length new_type_names then
1318955d57ac Corrected treatment of non-recursive abstraction types.
berghofe
parents: 18246
diff changeset
   714
                      list_abs (map (pair "z" o typ_of_dtyp') dts',
1318955d57ac Corrected treatment of non-recursive abstraction types.
berghofe
parents: 18246
diff changeset
   715
                        Const (List.nth (rep_names, k), typ_of_dtyp' dt'' -->
1318955d57ac Corrected treatment of non-recursive abstraction types.
berghofe
parents: 18246
diff changeset
   716
                          typ_of_dtyp descr sorts' dt'') $ app_bnds x (length dts'))
1318955d57ac Corrected treatment of non-recursive abstraction types.
berghofe
parents: 18246
diff changeset
   717
                    else error "nested recursion not (yet) supported"
1318955d57ac Corrected treatment of non-recursive abstraction types.
berghofe
parents: 18246
diff changeset
   718
                | _ => x) xs :: r_args)
17870
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   719
          end
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   720
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   721
        val (_, l_args, r_args) = foldr constr_arg (1, [], []) cargs;
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   722
        val abs_name = Sign.intern_const (Theory.sign_of thy) ("Abs_" ^ tname);
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   723
        val rep_name = Sign.intern_const (Theory.sign_of thy) ("Rep_" ^ tname);
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   724
        val constrT = map fastype_of l_args ---> T;
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   725
        val lhs = list_comb (Const (Sign.full_name thy (Sign.base_name cname),
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   726
          constrT), l_args);
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   727
        val rhs = list_comb (Const (cname, map fastype_of r_args ---> T'), r_args);
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   728
        val def = Logic.mk_equals (lhs, Const (abs_name, T' --> T) $ rhs);
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   729
        val eqn = HOLogic.mk_Trueprop (HOLogic.mk_eq
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   730
          (Const (rep_name, T --> T') $ lhs, rhs));
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   731
        val def_name = (Sign.base_name cname) ^ "_def";
18366
78b4f225b640 Adapted to new type of PureThy.add_defs_i.
berghofe
parents: 18350
diff changeset
   732
        val ([def_thm], thy') = thy |>
17870
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   733
          Theory.add_consts_i [(cname', constrT, mx)] |>
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   734
          (PureThy.add_defs_i false o map Thm.no_attributes) [(def_name, def)]
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   735
      in (thy', defs @ [def_thm], eqns @ [eqn]) end;
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   736
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   737
    fun dt_constr_defs ((thy, defs, eqns, dist_lemmas),
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   738
        (((((_, (_, _, constrs)), tname), T), T'), constr_syntax)) =
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   739
      let
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   740
        val rep_const = cterm_of thy
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   741
          (Const (Sign.intern_const thy ("Rep_" ^ tname), T --> T'));
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   742
        val dist = standard (cterm_instantiate [(cterm_of thy distinct_f, rep_const)] distinct_lemma);
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   743
        val (thy', defs', eqns') = Library.foldl (make_constr_def tname T T')
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   744
          ((Theory.add_path tname thy, defs, []), constrs ~~ constr_syntax)
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   745
      in
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   746
        (parent_path flat_names thy', defs', eqns @ [eqns'], dist_lemmas @ [dist])
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   747
      end;
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   748
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   749
    val (thy8, constr_defs, constr_rep_eqns, dist_lemmas) = Library.foldl dt_constr_defs
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   750
      ((thy7, [], [], []), List.take (descr, length new_type_names) ~~
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   751
        new_type_names ~~ newTs ~~ newTs' ~~ constr_syntax);
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   752
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   753
    val abs_inject_thms = map (fn tname =>
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   754
      PureThy.get_thm thy8 (Name ("Abs_" ^ tname ^ "_inject"))) new_type_names;
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   755
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   756
    val rep_inject_thms = map (fn tname =>
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   757
      PureThy.get_thm thy8 (Name ("Rep_" ^ tname ^ "_inject"))) new_type_names;
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   758
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   759
    val rep_thms = map (fn tname =>
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   760
      PureThy.get_thm thy8 (Name ("Rep_" ^ tname))) new_type_names;
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   761
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   762
    val rep_inverse_thms = map (fn tname =>
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   763
      PureThy.get_thm thy8 (Name ("Rep_" ^ tname ^ "_inverse"))) new_type_names;
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   764
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   765
    (* prove theorem  Rep_i (Constr_j ...) = Constr'_j ...  *)
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   766
    
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   767
    fun prove_constr_rep_thm eqn =
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   768
      let
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   769
        val inj_thms = map (fn r => r RS iffD1) abs_inject_thms;
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   770
        val rewrites = constr_defs @ map mk_meta_eq rep_inverse_thms
18010
c885c93a9324 Removed legacy prove_goalw_cterm command.
berghofe
parents: 17874
diff changeset
   771
      in standard (Goal.prove thy8 [] [] eqn (fn _ => EVERY
17870
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   772
        [resolve_tac inj_thms 1,
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   773
         rewrite_goals_tac rewrites,
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   774
         rtac refl 3,
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   775
         resolve_tac rep_intrs 2,
18010
c885c93a9324 Removed legacy prove_goalw_cterm command.
berghofe
parents: 17874
diff changeset
   776
         REPEAT (resolve_tac rep_thms 1)]))
17870
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   777
      end;
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   778
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   779
    val constr_rep_thmss = map (map prove_constr_rep_thm) constr_rep_eqns;
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   780
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   781
    (* prove theorem  pi \<bullet> Rep_i x = Rep_i (pi \<bullet> x) *)
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   782
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   783
    fun prove_perm_rep_perm (atom, perm_closed_thms) = map (fn th =>
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   784
      let
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   785
        val _ $ (_ $ (Rep $ x) $ _) = Logic.unvarify (prop_of th);
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   786
        val Type ("fun", [T, U]) = fastype_of Rep;
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   787
        val permT = mk_permT (Type (atom, []));
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   788
        val pi = Free ("pi", permT);
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   789
      in
18010
c885c93a9324 Removed legacy prove_goalw_cterm command.
berghofe
parents: 17874
diff changeset
   790
        standard (Goal.prove thy8 [] [] (HOLogic.mk_Trueprop (HOLogic.mk_eq
19494
2e909d5309f4 Renamed "nominal" theory to "Nominal".
berghofe
parents: 19489
diff changeset
   791
            (Const ("Nominal.perm", permT --> U --> U) $ pi $ (Rep $ x),
2e909d5309f4 Renamed "nominal" theory to "Nominal".
berghofe
parents: 19489
diff changeset
   792
             Rep $ (Const ("Nominal.perm", permT --> T --> T) $ pi $ x))))
18010
c885c93a9324 Removed legacy prove_goalw_cterm command.
berghofe
parents: 17874
diff changeset
   793
          (fn _ => simp_tac (HOL_basic_ss addsimps (perm_defs @ Abs_inverse_thms @
c885c93a9324 Removed legacy prove_goalw_cterm command.
berghofe
parents: 17874
diff changeset
   794
            perm_closed_thms @ Rep_thms)) 1))
17870
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   795
      end) Rep_thms;
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   796
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   797
    val perm_rep_perm_thms = List.concat (map prove_perm_rep_perm
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   798
      (atoms ~~ perm_closed_thmss));
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   799
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   800
    (* prove distinctness theorems *)
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   801
18016
8f3a80033ba4 Implemented proof of weak induction theorem.
berghofe
parents: 18010
diff changeset
   802
    val distinct_props = setmp DatatypeProp.dtK 1000
8f3a80033ba4 Implemented proof of weak induction theorem.
berghofe
parents: 18010
diff changeset
   803
      (DatatypeProp.make_distincts new_type_names descr' sorts') thy8;
17870
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   804
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   805
    val dist_rewrites = map (fn (rep_thms, dist_lemma) =>
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   806
      dist_lemma::(rep_thms @ [In0_eq, In1_eq, In0_not_In1, In1_not_In0]))
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   807
        (constr_rep_thmss ~~ dist_lemmas);
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   808
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   809
    fun prove_distinct_thms (_, []) = []
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   810
      | prove_distinct_thms (p as (rep_thms, dist_lemma), t::ts) =
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   811
          let
18010
c885c93a9324 Removed legacy prove_goalw_cterm command.
berghofe
parents: 17874
diff changeset
   812
            val dist_thm = standard (Goal.prove thy8 [] [] t (fn _ =>
c885c93a9324 Removed legacy prove_goalw_cterm command.
berghofe
parents: 17874
diff changeset
   813
              simp_tac (simpset_of thy8 addsimps (dist_lemma :: rep_thms)) 1))
17870
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   814
          in dist_thm::(standard (dist_thm RS not_sym))::
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   815
            (prove_distinct_thms (p, ts))
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   816
          end;
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   817
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   818
    val distinct_thms = map prove_distinct_thms
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   819
      (constr_rep_thmss ~~ dist_lemmas ~~ distinct_props);
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   820
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   821
    (** prove equations for permutation functions **)
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   822
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   823
    val abs_perm = PureThy.get_thms thy8 (Name "abs_perm"); (* FIXME *)
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   824
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   825
    val perm_simps' = map (fn (((i, (_, _, constrs)), tname), constr_rep_thms) =>
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   826
      let val T = replace_types' (nth_dtyp i)
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   827
      in List.concat (map (fn (atom, perm_closed_thms) =>
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   828
          map (fn ((cname, dts), constr_rep_thm) => 
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   829
        let
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   830
          val cname = Sign.intern_const thy8
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   831
            (NameSpace.append tname (Sign.base_name cname));
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   832
          val permT = mk_permT (Type (atom, []));
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   833
          val pi = Free ("pi", permT);
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   834
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   835
          fun perm t =
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   836
            let val T = fastype_of t
19494
2e909d5309f4 Renamed "nominal" theory to "Nominal".
berghofe
parents: 19489
diff changeset
   837
            in Const ("Nominal.perm", permT --> T --> T) $ pi $ t end;
17870
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   838
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   839
          fun constr_arg (dt, (j, l_args, r_args)) =
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   840
            let
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   841
              val x' = mk_Free "x" (typ_of_dtyp' dt) j;
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   842
              val (dts, dt') = strip_option dt;
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   843
              val Ts = map typ_of_dtyp' dts;
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   844
              val xs = map (fn (T, i) => mk_Free "x" T i)
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   845
                (Ts ~~ (j upto j + length dts - 1))
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   846
              val x = mk_Free "x" (typ_of_dtyp' dt') (j + length dts);
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   847
              val (dts', dt'') = strip_dtyp dt';
18261
1318955d57ac Corrected treatment of non-recursive abstraction types.
berghofe
parents: 18246
diff changeset
   848
            in
1318955d57ac Corrected treatment of non-recursive abstraction types.
berghofe
parents: 18246
diff changeset
   849
              (j + length dts + 1,
1318955d57ac Corrected treatment of non-recursive abstraction types.
berghofe
parents: 18246
diff changeset
   850
               xs @ x :: l_args,
1318955d57ac Corrected treatment of non-recursive abstraction types.
berghofe
parents: 18246
diff changeset
   851
               map perm (xs @ [x]) @ r_args)
17870
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   852
            end
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   853
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   854
          val (_, l_args, r_args) = foldr constr_arg (1, [], []) dts;
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   855
          val c = Const (cname, map fastype_of l_args ---> T)
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   856
        in
18010
c885c93a9324 Removed legacy prove_goalw_cterm command.
berghofe
parents: 17874
diff changeset
   857
          standard (Goal.prove thy8 [] []
17870
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   858
            (HOLogic.mk_Trueprop (HOLogic.mk_eq
18010
c885c93a9324 Removed legacy prove_goalw_cterm command.
berghofe
parents: 17874
diff changeset
   859
              (perm (list_comb (c, l_args)), list_comb (c, r_args))))
c885c93a9324 Removed legacy prove_goalw_cterm command.
berghofe
parents: 17874
diff changeset
   860
            (fn _ => EVERY
17870
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   861
              [simp_tac (simpset_of thy8 addsimps (constr_rep_thm :: perm_defs)) 1,
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   862
               simp_tac (HOL_basic_ss addsimps (Rep_thms @ Abs_inverse_thms @
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   863
                 constr_defs @ perm_closed_thms)) 1,
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   864
               TRY (simp_tac (HOL_basic_ss addsimps
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   865
                 (symmetric perm_fun_def :: abs_perm)) 1),
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   866
               TRY (simp_tac (HOL_basic_ss addsimps
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   867
                 (perm_fun_def :: perm_defs @ Rep_thms @ Abs_inverse_thms @
18010
c885c93a9324 Removed legacy prove_goalw_cterm command.
berghofe
parents: 17874
diff changeset
   868
                    perm_closed_thms)) 1)]))
17870
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   869
        end) (constrs ~~ constr_rep_thms)) (atoms ~~ perm_closed_thmss))
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   870
      end) (List.take (descr, length new_type_names) ~~ new_type_names ~~ constr_rep_thmss);
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   871
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   872
    (** prove injectivity of constructors **)
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   873
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   874
    val rep_inject_thms' = map (fn th => th RS sym) rep_inject_thms;
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   875
    val alpha = PureThy.get_thms thy8 (Name "alpha");
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   876
    val abs_fresh = PureThy.get_thms thy8 (Name "abs_fresh");
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   877
    val fresh_def = PureThy.get_thm thy8 (Name "fresh_def");
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   878
    val supp_def = PureThy.get_thm thy8 (Name "supp_def");
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   879
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   880
    val inject_thms = map (fn (((i, (_, _, constrs)), tname), constr_rep_thms) =>
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   881
      let val T = replace_types' (nth_dtyp i)
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   882
      in List.mapPartial (fn ((cname, dts), constr_rep_thm) =>
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   883
        if null dts then NONE else SOME
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   884
        let
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   885
          val cname = Sign.intern_const thy8
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   886
            (NameSpace.append tname (Sign.base_name cname));
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   887
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   888
          fun make_inj (dt, (j, args1, args2, eqs)) =
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   889
            let
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   890
              val x' = mk_Free "x" (typ_of_dtyp' dt) j;
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   891
              val y' = mk_Free "y" (typ_of_dtyp' dt) j;
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   892
              val (dts, dt') = strip_option dt;
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   893
              val Ts_idx = map typ_of_dtyp' dts ~~ (j upto j + length dts - 1);
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   894
              val xs = map (fn (T, i) => mk_Free "x" T i) Ts_idx;
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   895
              val ys = map (fn (T, i) => mk_Free "y" T i) Ts_idx;
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   896
              val x = mk_Free "x" (typ_of_dtyp' dt') (j + length dts);
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   897
              val y = mk_Free "y" (typ_of_dtyp' dt') (j + length dts);
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   898
              val (dts', dt'') = strip_dtyp dt';
18261
1318955d57ac Corrected treatment of non-recursive abstraction types.
berghofe
parents: 18246
diff changeset
   899
            in
1318955d57ac Corrected treatment of non-recursive abstraction types.
berghofe
parents: 18246
diff changeset
   900
              (j + length dts + 1,
1318955d57ac Corrected treatment of non-recursive abstraction types.
berghofe
parents: 18246
diff changeset
   901
               xs @ (x :: args1), ys @ (y :: args2),
1318955d57ac Corrected treatment of non-recursive abstraction types.
berghofe
parents: 18246
diff changeset
   902
               HOLogic.mk_eq
1318955d57ac Corrected treatment of non-recursive abstraction types.
berghofe
parents: 18246
diff changeset
   903
                 (foldr mk_abs_fun x xs, foldr mk_abs_fun y ys) :: eqs)
17870
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   904
            end;
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   905
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   906
          val (_, args1, args2, eqs) = foldr make_inj (1, [], [], []) dts;
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   907
          val Ts = map fastype_of args1;
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   908
          val c = Const (cname, Ts ---> T)
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   909
        in
18010
c885c93a9324 Removed legacy prove_goalw_cterm command.
berghofe
parents: 17874
diff changeset
   910
          standard (Goal.prove thy8 [] [] (HOLogic.mk_Trueprop (HOLogic.mk_eq
17870
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   911
              (HOLogic.mk_eq (list_comb (c, args1), list_comb (c, args2)),
18010
c885c93a9324 Removed legacy prove_goalw_cterm command.
berghofe
parents: 17874
diff changeset
   912
               foldr1 HOLogic.mk_conj eqs)))
c885c93a9324 Removed legacy prove_goalw_cterm command.
berghofe
parents: 17874
diff changeset
   913
            (fn _ => EVERY
17870
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   914
               [asm_full_simp_tac (simpset_of thy8 addsimps (constr_rep_thm ::
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   915
                  rep_inject_thms')) 1,
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   916
                TRY (asm_full_simp_tac (HOL_basic_ss addsimps (fresh_def :: supp_def ::
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   917
                  alpha @ abs_perm @ abs_fresh @ rep_inject_thms @
17874
8be65cf94d2e Improved proof of injectivity theorems to make it work on
berghofe
parents: 17873
diff changeset
   918
                  perm_rep_perm_thms)) 1),
8be65cf94d2e Improved proof of injectivity theorems to make it work on
berghofe
parents: 17873
diff changeset
   919
                TRY (asm_full_simp_tac (HOL_basic_ss addsimps (perm_fun_def ::
18010
c885c93a9324 Removed legacy prove_goalw_cterm command.
berghofe
parents: 17874
diff changeset
   920
                  expand_fun_eq :: rep_inject_thms @ perm_rep_perm_thms)) 1)]))
17870
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   921
        end) (constrs ~~ constr_rep_thms)
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   922
      end) (List.take (descr, length new_type_names) ~~ new_type_names ~~ constr_rep_thmss);
c35381811d5c Initial revision.
berghofe
parents:
diff changeset
   923
17872
f08fc98a164a Implemented proofs for support and freshness theorems.
berghofe
parents: 17870
diff changeset
   924
    (** equations for support and freshness **)
f08fc98a164a Implemented proofs for support and freshness theorems.
berghofe
parents: 17870
diff changeset
   925
f08fc98a164a Implemented proofs for support and freshness theorems.
berghofe
parents: 17870
diff changeset
   926
    val Un_assoc = PureThy.get_thm thy8 (Name "Un_assoc");
f08fc98a164a Implemented proofs for support and freshness theorems.
berghofe
parents: 17870
diff changeset
   927
    val de_Morgan_conj = PureThy.get_thm thy8 (Name "de_Morgan_conj");
f08fc98a164a Implemented proofs for support and freshness theorems.
berghofe
parents: 17870
diff changeset
   928
    val Collect_disj_eq = PureThy.get_thm thy8 (Name "Collect_disj_eq");
f08fc98a164a Implemented proofs for support and freshness theorems.
berghofe
parents: 17870
diff changeset
   929
    val finite_Un = PureThy.get_thm thy8 (Name "finite_Un");
f08fc98a164a Implemented proofs for support and freshness theorems.
berghofe
parents: 17870
diff changeset
   930
f08fc98a164a Implemented proofs for support and freshness theorems.
berghofe
parents: 17870
diff changeset
   931
    val (supp_thms, fresh_thms) = ListPair.unzip (map ListPair.unzip
f08fc98a164a Implemented proofs for support and freshness theorems.
berghofe
parents: 17870
diff changeset
   932
      (map (fn ((((i, (_, _, constrs)), tname), inject_thms'), perm_thms') =>
f08fc98a164a Implemented proofs for support and freshness theorems.
berghofe
parents: 17870
diff changeset
   933
      let val T = replace_types' (nth_dtyp i)
f08fc98a164a Implemented proofs for support and freshness theorems.
berghofe
parents: 17870
diff changeset
   934
      in List.concat (map (fn (cname, dts) => map (fn atom =>
f08fc98a164a Implemented proofs for support and freshness theorems.
berghofe
parents: 17870
diff changeset
   935
        let
f08fc98a164a Implemented proofs for support and freshness theorems.
berghofe
parents: 17870
diff changeset
   936
          val cname = Sign.intern_const thy8
f08fc98a164a Implemented proofs for support and freshness theorems.
berghofe
parents: 17870
diff changeset
   937
            (NameSpace.append tname (Sign.base_name cname));
f08fc98a164a Implemented proofs for support and freshness theorems.
berghofe
parents: 17870
diff changeset
   938
          val atomT = Type (atom, []);
f08fc98a164a Implemented proofs for support and freshness theorems.
berghofe
parents: 17870
diff changeset
   939
f08fc98a164a Implemented proofs for support and freshness theorems.
berghofe
parents: 17870
diff changeset
   940
          fun process_constr (dt, (j, args1, args2)) =
f08fc98a164a Implemented proofs for support and freshness theorems.
berghofe
parents: 17870
diff changeset
   941
            let
f08fc98a164a Implemented proofs for support and freshness theorems.
berghofe
parents: 17870
diff changeset
   942
              val x' = mk_Free "x" (typ_of_dtyp' dt) j;
f08fc98a164a Implemented proofs for support and freshness theorems.
berghofe
parents: 17870
diff changeset
   943
              val (dts, dt') = strip_option dt;
f08fc98a164a Implemented proofs for support and freshness theorems.
berghofe
parents: 17870
diff changeset
   944
              val Ts_idx = map typ_of_dtyp' dts ~~ (j upto j + length dts - 1);
f08fc98a164a Implemented proofs for support and freshness theorems.
berghofe
parents: 17870
diff changeset
   945
              val xs = map (fn (T, i) => mk_Free "x" T i) Ts_idx;
f08fc98a164a Implemented proofs for support and freshness theorems.
berghofe
parents: 17870
diff changeset
   946
              val x = mk_Free "x" (typ_of_dtyp' dt') (j + length dts);
f08fc98a164a Implemented proofs for support and freshness theorems.
berghofe
parents: 17870
diff changeset
   947
              val (dts', dt'') = strip_dtyp dt';
18261
1318955d57ac Corrected treatment of non-recursive abstraction types.
berghofe
parents: 18246
diff changeset
   948
            in
1318955d57ac Corrected treatment of non-recursive abstraction types.
berghofe
parents: 18246
diff changeset
   949
              (j + length dts + 1,
1318955d57ac Corrected treatment of non-recursive abstraction types.
berghofe
parents: 18246
diff changeset
   950
               xs @ (x :: args1), foldr mk_abs_fun x xs :: args2)
17872
f08fc98a164a Implemented proofs for support and freshness theorems.
berghofe
parents: 17870
diff changeset
   951
            end;
f08fc98a164a Implemented proofs for support and freshness theorems.
berghofe
parents: 17870
diff changeset
   952
f08fc98a164a Implemented proofs for support and freshness theorems.
berghofe
parents: 17870
diff changeset
   953
          val (_, args1, args2) = foldr process_constr (1, [], []) dts;
f08fc98a164a Implemented proofs for support and freshness theorems.
berghofe
parents: 17870
diff changeset
   954
          val Ts = map fastype_of args1;
f08fc98a164a Implemented proofs for support and freshness theorems.
berghofe
parents: 17870
diff changeset
   955
          val c = list_comb (Const (cname, Ts ---> T), args1);
f08fc98a164a Implemented proofs for support and freshness theorems.
berghofe
parents: 17870
diff changeset
   956
          fun supp t =
19494
2e909d5309f4 Renamed "nominal" theory to "Nominal".
berghofe
parents: 19489
diff changeset
   957
            Const ("Nominal.supp", fastype_of t --> HOLogic.mk_setT atomT) $ t;
17872
f08fc98a164a Implemented proofs for support and freshness theorems.
berghofe
parents: 17870
diff changeset
   958
          fun fresh t =
19494
2e909d5309f4 Renamed "nominal" theory to "Nominal".
berghofe
parents: 19489
diff changeset
   959
            Const ("Nominal.fresh", atomT --> fastype_of t --> HOLogic.boolT) $
17872
f08fc98a164a Implemented proofs for support and freshness theorems.
berghofe
parents: 17870
diff changeset
   960
              Free ("a", atomT) $ t;
18010
c885c93a9324 Removed legacy prove_goalw_cterm command.
berghofe
parents: 17874
diff changeset
   961
          val supp_thm = standard (Goal.prove thy8 [] []
17872
f08fc98a164a Implemented proofs for support and freshness theorems.
berghofe
parents: 17870
diff changeset
   962
              (HOLogic.mk_Trueprop (HOLogic.mk_eq
f08fc98a164a Implemented proofs for support and freshness theorems.
berghofe
parents: 17870
diff changeset
   963
                (supp c,
f08fc98a164a Implemented proofs for support and freshness theorems.
berghofe
parents: 17870
diff changeset
   964
                 if null dts then Const ("{}", HOLogic.mk_setT atomT)
18010
c885c93a9324 Removed legacy prove_goalw_cterm command.
berghofe
parents: 17874
diff changeset
   965
                 else foldr1 (HOLogic.mk_binop "op Un") (map supp args2))))
17872
f08fc98a164a Implemented proofs for support and freshness theorems.
berghofe
parents: 17870
diff changeset
   966
            (fn _ =>
18010
c885c93a9324 Removed legacy prove_goalw_cterm command.
berghofe
parents: 17874
diff changeset
   967
              simp_tac (HOL_basic_ss addsimps (supp_def ::
17872
f08fc98a164a Implemented proofs for support and freshness theorems.
berghofe
parents: 17870
diff changeset
   968
                 Un_assoc :: de_Morgan_conj :: Collect_disj_eq :: finite_Un ::
17874
8be65cf94d2e Improved proof of injectivity theorems to make it work on
berghofe
parents: 17873
diff changeset
   969
                 symmetric empty_def :: Finites.emptyI :: simp_thms @
18010
c885c93a9324 Removed legacy prove_goalw_cterm command.
berghofe
parents: 17874
diff changeset
   970
                 abs_perm @ abs_fresh @ inject_thms' @ perm_thms')) 1))
17872
f08fc98a164a Implemented proofs for support and freshness theorems.
berghofe
parents: 17870
diff changeset
   971
        in
f08fc98a164a Implemented proofs for support and freshness theorems.
berghofe
parents: 17870
diff changeset
   972
          (supp_thm,
18010
c885c93a9324 Removed legacy prove_goalw_cterm command.
berghofe
parents: 17874
diff changeset
   973
           standard (Goal.prove thy8 [] [] (HOLogic.mk_Trueprop (HOLogic.mk_eq
17872
f08fc98a164a Implemented proofs for support and freshness theorems.
berghofe
parents: 17870
diff changeset
   974
              (fresh c,
f08fc98a164a Implemented proofs for support and freshness theorems.
berghofe
parents: 17870
diff changeset
   975
               if null dts then HOLogic.true_const
18010
c885c93a9324 Removed legacy prove_goalw_cterm command.
berghofe
parents: 17874
diff changeset
   976
               else foldr1 HOLogic.mk_conj (map fresh args2))))
17872
f08fc98a164a Implemented proofs for support and freshness theorems.
berghofe
parents: 17870
diff changeset
   977
             (fn _ =>
18010
c885c93a9324 Removed legacy prove_goalw_cterm command.
berghofe
parents: 17874
diff changeset
   978
               simp_tac (simpset_of thy8 addsimps [fresh_def, supp_thm]) 1)))
17872
f08fc98a164a Implemented proofs for support and freshness theorems.
berghofe
parents: 17870
diff changeset
   979
        end) atoms) constrs)
f08fc98a164a Implemented proofs for support and freshness theorems.
berghofe
parents: 17870
diff changeset
   980
      end) (List.take (descr, length new_type_names) ~~ new_type_names ~~ inject_thms ~~ perm_simps')));
f08fc98a164a Implemented proofs for support and freshness theorems.
berghofe
parents: 17870
diff changeset
   981
18107
ee6b4d3af498 Added strong induction theorem (currently only axiomatized!).
berghofe
parents: 18104
diff changeset
   982
    (**** weak induction theorem ****)
18016
8f3a80033ba4 Implemented proof of weak induction theorem.
berghofe
parents: 18010
diff changeset
   983
18107
ee6b4d3af498 Added strong induction theorem (currently only axiomatized!).
berghofe
parents: 18104
diff changeset
   984
    val arities = get_arities descr'';
18016
8f3a80033ba4 Implemented proof of weak induction theorem.
berghofe
parents: 18010
diff changeset
   985
8f3a80033ba4 Implemented proof of weak induction theorem.
berghofe
parents: 18010
diff changeset
   986
    fun mk_funs_inv thm =
8f3a80033ba4 Implemented proof of weak induction theorem.
berghofe
parents: 18010
diff changeset
   987
      let
8f3a80033ba4 Implemented proof of weak induction theorem.
berghofe
parents: 18010
diff changeset
   988
        val {sign, prop, ...} = rep_thm thm;
8f3a80033ba4 Implemented proof of weak induction theorem.
berghofe
parents: 18010
diff changeset
   989
        val _ $ (_ $ (Const (_, Type (_, [U, _])) $ _ $ S)) $
8f3a80033ba4 Implemented proof of weak induction theorem.
berghofe
parents: 18010
diff changeset
   990
          (_ $ (_ $ (r $ (a $ _)) $ _)) = Type.freeze prop;
8f3a80033ba4 Implemented proof of weak induction theorem.
berghofe
parents: 18010
diff changeset
   991
        val used = add_term_tfree_names (a, []);
8f3a80033ba4 Implemented proof of weak induction theorem.
berghofe
parents: 18010
diff changeset
   992
8f3a80033ba4 Implemented proof of weak induction theorem.
berghofe
parents: 18010
diff changeset
   993
        fun mk_thm i =
8f3a80033ba4 Implemented proof of weak induction theorem.
berghofe
parents: 18010
diff changeset
   994
          let
8f3a80033ba4 Implemented proof of weak induction theorem.
berghofe
parents: 18010
diff changeset
   995
            val Ts = map (TFree o rpair HOLogic.typeS)
8f3a80033ba4 Implemented proof of weak induction theorem.
berghofe
parents: 18010
diff changeset
   996
              (variantlist (replicate i "'t", used));
8f3a80033ba4 Implemented proof of weak induction theorem.
berghofe
parents: 18010
diff changeset
   997
            val f = Free ("f", Ts ---> U)
8f3a80033ba4 Implemented proof of weak induction theorem.
berghofe
parents: 18010
diff changeset
   998
          in standard (Goal.prove sign [] [] (Logic.mk_implies
8f3a80033ba4 Implemented proof of weak induction theorem.
berghofe
parents: 18010
diff changeset
   999
            (HOLogic.mk_Trueprop (HOLogic.list_all
8f3a80033ba4 Implemented proof of weak induction theorem.
berghofe
parents: 18010
diff changeset
  1000
               (map (pair "x") Ts, HOLogic.mk_mem (app_bnds f i, S))),
8f3a80033ba4 Implemented proof of weak induction theorem.
berghofe
parents: 18010
diff changeset
  1001
             HOLogic.mk_Trueprop (HOLogic.mk_eq (list_abs (map (pair "x") Ts,
8f3a80033ba4 Implemented proof of weak induction theorem.
berghofe
parents: 18010
diff changeset
  1002
               r $ (a $ app_bnds f i)), f))))
8f3a80033ba4 Implemented proof of weak induction theorem.
berghofe
parents: 18010
diff changeset
  1003
            (fn _ => EVERY [REPEAT (rtac ext 1), REPEAT (etac allE 1), rtac thm 1, atac 1]))
8f3a80033ba4 Implemented proof of weak induction theorem.
berghofe
parents: 18010
diff changeset
  1004
          end
8f3a80033ba4 Implemented proof of weak induction theorem.
berghofe
parents: 18010
diff changeset
  1005
      in map (fn r => r RS subst) (thm :: map mk_thm arities) end;
8f3a80033ba4 Implemented proof of weak induction theorem.
berghofe
parents: 18010
diff changeset
  1006
8f3a80033ba4 Implemented proof of weak induction theorem.
berghofe
parents: 18010
diff changeset
  1007
    fun mk_indrule_lemma ((prems, concls), (((i, _), T), U)) =
8f3a80033ba4 Implemented proof of weak induction theorem.
berghofe
parents: 18010
diff changeset
  1008
      let
8f3a80033ba4 Implemented proof of weak induction theorem.
berghofe
parents: 18010
diff changeset
  1009
        val Rep_t = Const (List.nth (rep_names, i), T --> U) $
8f3a80033ba4 Implemented proof of weak induction theorem.
berghofe
parents: 18010
diff changeset
  1010
          mk_Free "x" T i;
8f3a80033ba4 Implemented proof of weak induction theorem.
berghofe
parents: 18010
diff changeset
  1011
8f3a80033ba4 Implemented proof of weak induction theorem.
berghofe
parents: 18010
diff changeset
  1012
        val Abs_t =  Const (List.nth (abs_names, i), U --> T)
8f3a80033ba4 Implemented proof of weak induction theorem.
berghofe
parents: 18010
diff changeset
  1013
8f3a80033ba4 Implemented proof of weak induction theorem.
berghofe
parents: 18010
diff changeset
  1014
      in (prems @ [HOLogic.imp $ HOLogic.mk_mem (Rep_t,
8f3a80033ba4 Implemented proof of weak induction theorem.
berghofe
parents: 18010
diff changeset
  1015
            Const (List.nth (rep_set_names, i), HOLogic.mk_setT U)) $
8f3a80033ba4 Implemented proof of weak induction theorem.
berghofe
parents: 18010
diff changeset
  1016
              (mk_Free "P" (T --> HOLogic.boolT) (i + 1) $ (Abs_t $ Rep_t))],
8f3a80033ba4 Implemented proof of weak induction theorem.
berghofe
parents: 18010
diff changeset
  1017
          concls @ [mk_Free "P" (T --> HOLogic.boolT) (i + 1) $ mk_Free "x" T i])
8f3a80033ba4 Implemented proof of weak induction theorem.
berghofe
parents: 18010
diff changeset
  1018
      end;
8f3a80033ba4 Implemented proof of weak induction theorem.
berghofe
parents: 18010
diff changeset
  1019
8f3a80033ba4 Implemented proof of weak induction theorem.
berghofe
parents: 18010
diff changeset
  1020
    val (indrule_lemma_prems, indrule_lemma_concls) =
18107
ee6b4d3af498 Added strong induction theorem (currently only axiomatized!).
berghofe
parents: 18104
diff changeset
  1021
      Library.foldl mk_indrule_lemma (([], []), (descr'' ~~ recTs ~~ recTs'));
18016
8f3a80033ba4 Implemented proof of weak induction theorem.
berghofe
parents: 18010
diff changeset
  1022
8f3a80033ba4 Implemented proof of weak induction theorem.
berghofe
parents: 18010
diff changeset
  1023
    val indrule_lemma = standard (Goal.prove thy8 [] []
8f3a80033ba4 Implemented proof of weak induction theorem.
berghofe
parents: 18010
diff changeset
  1024
      (Logic.mk_implies
8f3a80033ba4 Implemented proof of weak induction theorem.
berghofe
parents: 18010
diff changeset
  1025
        (HOLogic.mk_Trueprop (mk_conj indrule_lemma_prems),
8f3a80033ba4 Implemented proof of weak induction theorem.
berghofe
parents: 18010
diff changeset
  1026
         HOLogic.mk_Trueprop (mk_conj indrule_lemma_concls))) (fn _ => EVERY
8f3a80033ba4 Implemented proof of weak induction theorem.
berghofe
parents: 18010
diff changeset
  1027
           [REPEAT (etac conjE 1),
8f3a80033ba4 Implemented proof of weak induction theorem.
berghofe
parents: 18010
diff changeset
  1028
            REPEAT (EVERY
8f3a80033ba4 Implemented proof of weak induction theorem.
berghofe
parents: 18010
diff changeset
  1029
              [TRY (rtac conjI 1), full_simp_tac (HOL_basic_ss addsimps Rep_inverse_thms) 1,
8f3a80033ba4 Implemented proof of weak induction theorem.
berghofe
parents: 18010
diff changeset
  1030
               etac mp 1, resolve_tac Rep_thms 1])]));
8f3a80033ba4 Implemented proof of weak induction theorem.
berghofe
parents: 18010
diff changeset
  1031
8f3a80033ba4 Implemented proof of weak induction theorem.
berghofe
parents: 18010
diff changeset
  1032
    val Ps = map head_of (HOLogic.dest_conj (HOLogic.dest_Trueprop (concl_of indrule_lemma)));
8f3a80033ba4 Implemented proof of weak induction theorem.
berghofe
parents: 18010
diff changeset
  1033
    val frees = if length Ps = 1 then [Free ("P", snd (dest_Var (hd Ps)))] else
8f3a80033ba4 Implemented proof of weak induction theorem.
berghofe
parents: 18010
diff changeset
  1034
      map (Free o apfst fst o dest_Var) Ps;
8f3a80033ba4 Implemented proof of weak induction theorem.
berghofe
parents: 18010
diff changeset
  1035
    val indrule_lemma' = cterm_instantiate
8f3a80033ba4 Implemented proof of weak induction theorem.
berghofe
parents: 18010
diff changeset
  1036
      (map (cterm_of thy8) Ps ~~ map (cterm_of thy8) frees) indrule_lemma;
8f3a80033ba4 Implemented proof of weak induction theorem.
berghofe
parents: 18010
diff changeset
  1037
8f3a80033ba4 Implemented proof of weak induction theorem.
berghofe
parents: 18010
diff changeset
  1038
    val Abs_inverse_thms' = List.concat (map mk_funs_inv Abs_inverse_thms);
8f3a80033ba4 Implemented proof of weak induction theorem.
berghofe
parents: 18010
diff changeset
  1039
8f3a80033ba4 Implemented proof of weak induction theorem.
berghofe
parents: 18010
diff changeset
  1040
    val dt_induct_prop = DatatypeProp.make_ind descr' sorts';
8f3a80033ba4 Implemented proof of weak induction theorem.
berghofe
parents: 18010
diff changeset
  1041
    val dt_induct = standard (Goal.prove thy8 []
8f3a80033ba4 Implemented proof of weak induction theorem.
berghofe
parents: 18010
diff changeset
  1042
      (Logic.strip_imp_prems dt_induct_prop) (Logic.strip_imp_concl dt_induct_prop)
8f3a80033ba4 Implemented proof of weak induction theorem.
berghofe
parents: 18010
diff changeset
  1043
      (fn prems => EVERY
8f3a80033ba4 Implemented proof of weak induction theorem.
berghofe
parents: 18010
diff changeset
  1044
        [rtac indrule_lemma' 1,
8f3a80033ba4 Implemented proof of weak induction theorem.
berghofe
parents: 18010
diff changeset
  1045
         (DatatypeAux.indtac rep_induct THEN_ALL_NEW ObjectLogic.atomize_tac) 1,
8f3a80033ba4 Implemented proof of weak induction theorem.
berghofe
parents: 18010
diff changeset
  1046
         EVERY (map (fn (prem, r) => (EVERY
8f3a80033ba4 Implemented proof of weak induction theorem.
berghofe
parents: 18010
diff changeset
  1047
           [REPEAT (eresolve_tac Abs_inverse_thms' 1),
8f3a80033ba4 Implemented proof of weak induction theorem.
berghofe
parents: 18010
diff changeset
  1048
            simp_tac (HOL_basic_ss addsimps [symmetric r]) 1,
8f3a80033ba4 Implemented proof of weak induction theorem.
berghofe
parents: 18010
diff changeset
  1049
            DEPTH_SOLVE_1 (ares_tac [prem] 1 ORELSE etac allE 1)]))
8f3a80033ba4 Implemented proof of weak induction theorem.
berghofe
parents: 18010
diff changeset
  1050
                (prems ~~ constr_defs))]));
8f3a80033ba4 Implemented proof of weak induction theorem.
berghofe
parents: 18010
diff changeset
  1051
18107
ee6b4d3af498 Added strong induction theorem (currently only axiomatized!).
berghofe
parents: 18104
diff changeset
  1052
    val case_names_induct = mk_case_names_induct descr'';
18016
8f3a80033ba4 Implemented proof of weak induction theorem.
berghofe
parents: 18010
diff changeset
  1053
18066
d1e47ee13070 Added code for proving that new datatype has finite support.
berghofe
parents: 18054
diff changeset
  1054
    (**** prove that new datatypes have finite support ****)
d1e47ee13070 Added code for proving that new datatype has finite support.
berghofe
parents: 18054
diff changeset
  1055
18246
676d2e625d98 added fsub.thy (poplmark challenge) to the examples
urbanc
parents: 18245
diff changeset
  1056
    val _ = warning "proving finite support for the new datatype";
676d2e625d98 added fsub.thy (poplmark challenge) to the examples
urbanc
parents: 18245
diff changeset
  1057
18066
d1e47ee13070 Added code for proving that new datatype has finite support.
berghofe
parents: 18054
diff changeset
  1058
    val indnames = DatatypeProp.make_tnames recTs;
d1e47ee13070 Added code for proving that new datatype has finite support.
berghofe
parents: 18054
diff changeset
  1059
d1e47ee13070 Added code for proving that new datatype has finite support.
berghofe
parents: 18054
diff changeset
  1060
    val abs_supp = PureThy.get_thms thy8 (Name "abs_supp");
18067
8b9848d150ba - completed the list of thms for supp_atm
urbanc
parents: 18066
diff changeset
  1061
    val supp_atm = PureThy.get_thms thy8 (Name "supp_atm");
18066
d1e47ee13070 Added code for proving that new datatype has finite support.
berghofe
parents: 18054
diff changeset
  1062
d1e47ee13070 Added code for proving that new datatype has finite support.
berghofe
parents: 18054
diff changeset
  1063
    val finite_supp_thms = map (fn atom =>
d1e47ee13070 Added code for proving that new datatype has finite support.
berghofe
parents: 18054
diff changeset
  1064
      let val atomT = Type (atom, [])
d1e47ee13070 Added code for proving that new datatype has finite support.
berghofe
parents: 18054
diff changeset
  1065
      in map standard (List.take
d1e47ee13070 Added code for proving that new datatype has finite support.
berghofe
parents: 18054
diff changeset
  1066
        (split_conj_thm (Goal.prove thy8 [] [] (HOLogic.mk_Trueprop
d1e47ee13070 Added code for proving that new datatype has finite support.
berghofe
parents: 18054
diff changeset
  1067
           (foldr1 HOLogic.mk_conj (map (fn (s, T) => HOLogic.mk_mem
19494
2e909d5309f4 Renamed "nominal" theory to "Nominal".
berghofe
parents: 19489
diff changeset
  1068
             (Const ("Nominal.supp", T --> HOLogic.mk_setT atomT) $ Free (s, T),
18066
d1e47ee13070 Added code for proving that new datatype has finite support.
berghofe
parents: 18054
diff changeset
  1069
              Const ("Finite_Set.Finites", HOLogic.mk_setT (HOLogic.mk_setT atomT))))
d1e47ee13070 Added code for proving that new datatype has finite support.
berghofe
parents: 18054
diff changeset
  1070
               (indnames ~~ recTs))))
d1e47ee13070 Added code for proving that new datatype has finite support.
berghofe
parents: 18054
diff changeset
  1071
           (fn _ => indtac dt_induct indnames 1 THEN
d1e47ee13070 Added code for proving that new datatype has finite support.
berghofe
parents: 18054
diff changeset
  1072
            ALLGOALS (asm_full_simp_tac (simpset_of thy8 addsimps
18067
8b9848d150ba - completed the list of thms for supp_atm
urbanc
parents: 18066
diff changeset
  1073
              (abs_supp @ supp_atm @
18066
d1e47ee13070 Added code for proving that new datatype has finite support.
berghofe
parents: 18054
diff changeset
  1074
               PureThy.get_thms thy8 (Name ("fs_" ^ Sign.base_name atom ^ "1")) @
d1e47ee13070 Added code for proving that new datatype has finite support.
berghofe
parents: 18054
diff changeset
  1075
               List.concat supp_thms))))),
d1e47ee13070 Added code for proving that new datatype has finite support.
berghofe
parents: 18054
diff changeset
  1076
         length new_type_names))
d1e47ee13070 Added code for proving that new datatype has finite support.
berghofe
parents: 18054
diff changeset
  1077
      end) atoms;
d1e47ee13070 Added code for proving that new datatype has finite support.
berghofe
parents: 18054
diff changeset
  1078
18759
2f55e3e47355 Updated to Isabelle 2006-01-23
krauss
parents: 18707
diff changeset
  1079
    val simp_atts = replicate (length new_type_names) [Simplifier.simp_add];
18658
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1080
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1081
    val (_, thy9) = thy8 |>
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1082
      Theory.add_path big_name |>
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1083
      PureThy.add_thms [(("induct_weak", dt_induct), [case_names_induct])] ||>>
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1084
      PureThy.add_thmss [(("inducts_weak", projections dt_induct), [case_names_induct])] ||>
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1085
      Theory.parent_path ||>>
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1086
      DatatypeAux.store_thmss_atts "distinct" new_type_names simp_atts distinct_thms ||>>
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1087
      DatatypeAux.store_thmss "constr_rep" new_type_names constr_rep_thmss ||>>
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1088
      DatatypeAux.store_thmss_atts "perm" new_type_names simp_atts perm_simps' ||>>
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1089
      DatatypeAux.store_thmss "inject" new_type_names inject_thms ||>>
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1090
      DatatypeAux.store_thmss "supp" new_type_names supp_thms ||>>
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1091
      DatatypeAux.store_thmss_atts "fresh" new_type_names simp_atts fresh_thms ||>
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1092
      fold (fn (atom, ths) => fn thy =>
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1093
        let val class = Sign.intern_class thy ("fs_" ^ Sign.base_name atom)
19275
3d10de7a8ca7 add_inst_arity_i renamed to prove_arity.
berghofe
parents: 19251
diff changeset
  1094
        in fold (fn T => AxClass.prove_arity
18658
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1095
            (fst (dest_Type T),
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1096
              replicate (length sorts) [class], [class])
19133
7e84a1a3741c Adapted to Florian's recent changes to the AxClass package.
berghofe
parents: 18759
diff changeset
  1097
            (ClassPackage.intro_classes_tac [] THEN resolve_tac ths 1)) newTs thy
18658
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1098
        end) (atoms ~~ finite_supp_thms);
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1099
18107
ee6b4d3af498 Added strong induction theorem (currently only axiomatized!).
berghofe
parents: 18104
diff changeset
  1100
    (**** strong induction theorem ****)
ee6b4d3af498 Added strong induction theorem (currently only axiomatized!).
berghofe
parents: 18104
diff changeset
  1101
ee6b4d3af498 Added strong induction theorem (currently only axiomatized!).
berghofe
parents: 18104
diff changeset
  1102
    val pnames = if length descr'' = 1 then ["P"]
ee6b4d3af498 Added strong induction theorem (currently only axiomatized!).
berghofe
parents: 18104
diff changeset
  1103
      else map (fn i => "P" ^ string_of_int i) (1 upto length descr'');
18245
65e60434b3c2 Fixed problem with strong induction theorem for datatypes containing
berghofe
parents: 18142
diff changeset
  1104
    val ind_sort = if null dt_atomTs then HOLogic.typeS
18658
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1105
      else norm_sort thy9 (map (fn T => Sign.intern_class thy9 ("fs_" ^
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1106
        Sign.base_name (fst (dest_Type T)))) dt_atomTs);
18107
ee6b4d3af498 Added strong induction theorem (currently only axiomatized!).
berghofe
parents: 18104
diff changeset
  1107
    val fsT = TFree ("'n", ind_sort);
18658
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1108
    val fsT' = TFree ("'n", HOLogic.typeS);
18107
ee6b4d3af498 Added strong induction theorem (currently only axiomatized!).
berghofe
parents: 18104
diff changeset
  1109
18658
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1110
    val fresh_fs = map (fn (s, T) => (T, Free (s, fsT' --> HOLogic.mk_setT T)))
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1111
      (DatatypeProp.indexify_names (replicate (length dt_atomTs) "f") ~~ dt_atomTs);
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1112
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1113
    fun make_pred fsT i T =
18302
577e5d19b33c Changed order of predicate arguments and quantifiers in strong induction rule.
berghofe
parents: 18280
diff changeset
  1114
      Free (List.nth (pnames, i), fsT --> T --> HOLogic.boolT);
18107
ee6b4d3af498 Added strong induction theorem (currently only axiomatized!).
berghofe
parents: 18104
diff changeset
  1115
18658
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1116
    fun make_ind_prem fsT f k T ((cname, cargs), idxs) =
18107
ee6b4d3af498 Added strong induction theorem (currently only axiomatized!).
berghofe
parents: 18104
diff changeset
  1117
      let
ee6b4d3af498 Added strong induction theorem (currently only axiomatized!).
berghofe
parents: 18104
diff changeset
  1118
        val recs = List.filter is_rec_type cargs;
ee6b4d3af498 Added strong induction theorem (currently only axiomatized!).
berghofe
parents: 18104
diff changeset
  1119
        val Ts = map (typ_of_dtyp descr'' sorts') cargs;
ee6b4d3af498 Added strong induction theorem (currently only axiomatized!).
berghofe
parents: 18104
diff changeset
  1120
        val recTs' = map (typ_of_dtyp descr'' sorts') recs;
ee6b4d3af498 Added strong induction theorem (currently only axiomatized!).
berghofe
parents: 18104
diff changeset
  1121
        val tnames = variantlist (DatatypeProp.make_tnames Ts, pnames);
ee6b4d3af498 Added strong induction theorem (currently only axiomatized!).
berghofe
parents: 18104
diff changeset
  1122
        val rec_tnames = map fst (List.filter (is_rec_type o snd) (tnames ~~ cargs));
ee6b4d3af498 Added strong induction theorem (currently only axiomatized!).
berghofe
parents: 18104
diff changeset
  1123
        val frees = tnames ~~ Ts;
ee6b4d3af498 Added strong induction theorem (currently only axiomatized!).
berghofe
parents: 18104
diff changeset
  1124
        val z = (variant tnames "z", fsT);
ee6b4d3af498 Added strong induction theorem (currently only axiomatized!).
berghofe
parents: 18104
diff changeset
  1125
ee6b4d3af498 Added strong induction theorem (currently only axiomatized!).
berghofe
parents: 18104
diff changeset
  1126
        fun mk_prem ((dt, s), T) =
ee6b4d3af498 Added strong induction theorem (currently only axiomatized!).
berghofe
parents: 18104
diff changeset
  1127
          let
ee6b4d3af498 Added strong induction theorem (currently only axiomatized!).
berghofe
parents: 18104
diff changeset
  1128
            val (Us, U) = strip_type T;
ee6b4d3af498 Added strong induction theorem (currently only axiomatized!).
berghofe
parents: 18104
diff changeset
  1129
            val l = length Us
ee6b4d3af498 Added strong induction theorem (currently only axiomatized!).
berghofe
parents: 18104
diff changeset
  1130
          in list_all (z :: map (pair "x") Us, HOLogic.mk_Trueprop
18658
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1131
            (make_pred fsT (body_index dt) U $ Bound l $ app_bnds (Free (s, T)) l))
18107
ee6b4d3af498 Added strong induction theorem (currently only axiomatized!).
berghofe
parents: 18104
diff changeset
  1132
          end;
ee6b4d3af498 Added strong induction theorem (currently only axiomatized!).
berghofe
parents: 18104
diff changeset
  1133
ee6b4d3af498 Added strong induction theorem (currently only axiomatized!).
berghofe
parents: 18104
diff changeset
  1134
        val prems = map mk_prem (recs ~~ rec_tnames ~~ recTs');
ee6b4d3af498 Added strong induction theorem (currently only axiomatized!).
berghofe
parents: 18104
diff changeset
  1135
        val prems' = map (fn p as (_, T) => HOLogic.mk_Trueprop
18658
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1136
            (f T (Free p) (Free z)))
18107
ee6b4d3af498 Added strong induction theorem (currently only axiomatized!).
berghofe
parents: 18104
diff changeset
  1137
          (map (curry List.nth frees) (List.concat (map (fn (m, n) =>
ee6b4d3af498 Added strong induction theorem (currently only axiomatized!).
berghofe
parents: 18104
diff changeset
  1138
             m upto m + n - 1) idxs)))
ee6b4d3af498 Added strong induction theorem (currently only axiomatized!).
berghofe
parents: 18104
diff changeset
  1139
18302
577e5d19b33c Changed order of predicate arguments and quantifiers in strong induction rule.
berghofe
parents: 18280
diff changeset
  1140
      in list_all_free (frees @ [z], Logic.list_implies (prems' @ prems,
18658
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1141
        HOLogic.mk_Trueprop (make_pred fsT k T $ Free z $
18302
577e5d19b33c Changed order of predicate arguments and quantifiers in strong induction rule.
berghofe
parents: 18280
diff changeset
  1142
          list_comb (Const (cname, Ts ---> T), map Free frees))))
18107
ee6b4d3af498 Added strong induction theorem (currently only axiomatized!).
berghofe
parents: 18104
diff changeset
  1143
      end;
ee6b4d3af498 Added strong induction theorem (currently only axiomatized!).
berghofe
parents: 18104
diff changeset
  1144
ee6b4d3af498 Added strong induction theorem (currently only axiomatized!).
berghofe
parents: 18104
diff changeset
  1145
    val ind_prems = List.concat (map (fn (((i, (_, _, constrs)), (_, idxss)), T) =>
18658
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1146
      map (make_ind_prem fsT (fn T => fn t => fn u =>
19494
2e909d5309f4 Renamed "nominal" theory to "Nominal".
berghofe
parents: 19489
diff changeset
  1147
        Const ("Nominal.fresh", T --> fsT --> HOLogic.boolT) $ t $ u) i T)
18658
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1148
          (constrs ~~ idxss)) (descr'' ~~ ndescr ~~ recTs));
18107
ee6b4d3af498 Added strong induction theorem (currently only axiomatized!).
berghofe
parents: 18104
diff changeset
  1149
    val tnames = DatatypeProp.make_tnames recTs;
18658
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1150
    val zs = variantlist (replicate (length descr'') "z", tnames);
18107
ee6b4d3af498 Added strong induction theorem (currently only axiomatized!).
berghofe
parents: 18104
diff changeset
  1151
    val ind_concl = HOLogic.mk_Trueprop (foldr1 (HOLogic.mk_binop "op &")
18658
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1152
      (map (fn ((((i, _), T), tname), z) =>
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1153
        make_pred fsT i T $ Free (z, fsT) $ Free (tname, T))
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1154
        (descr'' ~~ recTs ~~ tnames ~~ zs)));
18107
ee6b4d3af498 Added strong induction theorem (currently only axiomatized!).
berghofe
parents: 18104
diff changeset
  1155
    val induct = Logic.list_implies (ind_prems, ind_concl);
ee6b4d3af498 Added strong induction theorem (currently only axiomatized!).
berghofe
parents: 18104
diff changeset
  1156
18658
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1157
    val ind_prems' =
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1158
      map (fn (_, f as Free (_, T)) => list_all_free ([("x", fsT')],
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1159
        HOLogic.mk_Trueprop (HOLogic.mk_mem (f $ Free ("x", fsT'),
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1160
          Const ("Finite_Set.Finites", HOLogic.mk_setT (body_type T)))))) fresh_fs @
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1161
      List.concat (map (fn (((i, (_, _, constrs)), (_, idxss)), T) =>
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1162
        map (make_ind_prem fsT' (fn T => fn t => fn u => HOLogic.Not $
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1163
          HOLogic.mk_mem (t, the (AList.lookup op = fresh_fs T) $ u)) i T)
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1164
            (constrs ~~ idxss)) (descr'' ~~ ndescr ~~ recTs));
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1165
    val ind_concl' = HOLogic.mk_Trueprop (foldr1 (HOLogic.mk_binop "op &")
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1166
      (map (fn ((((i, _), T), tname), z) =>
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1167
        make_pred fsT' i T $ Free (z, fsT') $ Free (tname, T))
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1168
        (descr'' ~~ recTs ~~ tnames ~~ zs)));
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1169
    val induct' = Logic.list_implies (ind_prems', ind_concl');
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1170
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1171
    fun mk_perm Ts (t, u) =
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1172
      let
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1173
        val T = fastype_of1 (Ts, t);
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1174
        val U = fastype_of1 (Ts, u)
19494
2e909d5309f4 Renamed "nominal" theory to "Nominal".
berghofe
parents: 19489
diff changeset
  1175
      in Const ("Nominal.perm", T --> U --> U) $ t $ u end;
18658
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1176
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1177
    val aux_ind_vars =
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1178
      (DatatypeProp.indexify_names (replicate (length dt_atomTs) "pi") ~~
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1179
       map mk_permT dt_atomTs) @ [("z", fsT')];
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1180
    val aux_ind_Ts = rev (map snd aux_ind_vars);
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1181
    val aux_ind_concl = HOLogic.mk_Trueprop (foldr1 (HOLogic.mk_binop "op &")
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1182
      (map (fn (((i, _), T), tname) =>
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1183
        HOLogic.list_all (aux_ind_vars, make_pred fsT' i T $ Bound 0 $
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1184
          foldr (mk_perm aux_ind_Ts) (Free (tname, T))
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1185
            (map Bound (length dt_atomTs downto 1))))
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1186
        (descr'' ~~ recTs ~~ tnames)));
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1187
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1188
    fun mk_ind_perm i k p l vs j =
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1189
      let
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1190
        val n = length vs;
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1191
        val Ts = map snd vs;
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1192
        val T = List.nth (Ts, i - j);
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1193
        val pT = NominalAtoms.mk_permT T
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1194
      in
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1195
        Const ("List.list.Cons", HOLogic.mk_prodT (T, T) --> pT --> pT) $
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1196
          (HOLogic.pair_const T T $ Bound (l - j) $ foldr (mk_perm Ts)
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1197
            (Bound (i - j))
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1198
            (map (mk_ind_perm i k p l vs) (j - 1 downto 0) @
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1199
             map Bound (n - k - 1 downto n - k - p))) $
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1200
          Const ("List.list.Nil", pT)
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1201
      end;
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1202
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1203
    fun mk_fresh i i' j k p l vs _ _ =
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1204
      let
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1205
        val n = length vs;
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1206
        val Ts = map snd vs;
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1207
        val T = List.nth (Ts, n - i - 1 - j);
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1208
        val f = the (AList.lookup op = fresh_fs T);
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1209
        val U = List.nth (Ts, n - i' - 1);
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1210
        val S = HOLogic.mk_setT T;
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1211
        val prms = map (mk_ind_perm (n - i) k p (n - l) (("a", T) :: vs))
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1212
            (j - 1 downto 0) @
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1213
          map Bound (n - k downto n - k - p + 1)
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1214
      in
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1215
        HOLogic.mk_Trueprop (Const ("Ex", (T --> HOLogic.boolT) --> HOLogic.boolT) $
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1216
          Abs ("a", T, HOLogic.Not $
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1217
            (Const ("op :", T --> S --> HOLogic.boolT) $ Bound 0 $
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1218
              (Const ("insert", T --> S --> S) $
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1219
                (foldr (mk_perm (T :: Ts)) (Bound (n - i - j)) prms) $
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1220
                (Const ("op Un", S --> S --> S) $ (f $ Bound (n - k - p)) $
19494
2e909d5309f4 Renamed "nominal" theory to "Nominal".
berghofe
parents: 19489
diff changeset
  1221
                   (Const ("Nominal.supp", U --> S) $
18658
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1222
                     foldr (mk_perm (T :: Ts)) (Bound (n - i')) prms))))))
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1223
      end;
18104
dbe58b104cb9 added thms perm, distinct and fresh to the simplifier.
urbanc
parents: 18068
diff changeset
  1224
18658
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1225
    fun mk_fresh_constr is p vs _ concl =
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1226
      let
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1227
        val n = length vs;
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1228
        val Ts = map snd vs;
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1229
        val _ $ (_ $ _ $ t) = concl;
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1230
        val c = head_of t;
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1231
        val T = body_type (fastype_of c);
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1232
        val k = foldr op + 0 (map (fn (_, i) => i + 1) is);
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1233
        val ps = map Bound (n - k - 1 downto n - k - p);
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1234
        val (_, _, ts, us) = foldl (fn ((_, i), (m, n, ts, us)) =>
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1235
          (m - i - 1, n - i,
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1236
           ts @ map Bound (n downto n - i + 1) @
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1237
             [foldr (mk_perm Ts) (Bound (m - i))
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1238
                (map (mk_ind_perm m k p n vs) (i - 1 downto 0) @ ps)],
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1239
           us @ map (fn j => foldr (mk_perm Ts) (Bound j) ps) (m downto m - i)))
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1240
          (n - 1, n - k - p - 2, [], []) is
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1241
      in
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1242
        HOLogic.mk_Trueprop (HOLogic.eq_const T $ list_comb (c, ts) $ list_comb (c, us))
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1243
      end;
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1244
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1245
    val abs_fun_finite_supp = PureThy.get_thm thy9 (Name "abs_fun_finite_supp");
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1246
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1247
    val at_finite_select = PureThy.get_thm thy9 (Name "at_finite_select");
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1248
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1249
    val induct_aux_lemmas = List.concat (map (fn Type (s, _) =>
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1250
      [PureThy.get_thm thy9 (Name ("pt_" ^ Sign.base_name s ^ "_inst")),
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1251
       PureThy.get_thm thy9 (Name ("fs_" ^ Sign.base_name s ^ "1")),
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1252
       PureThy.get_thm thy9 (Name ("at_" ^ Sign.base_name s ^ "_inst"))]) dt_atomTs);
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1253
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1254
    val induct_aux_lemmas' = map (fn Type (s, _) =>
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1255
      PureThy.get_thm thy9 (Name ("pt_" ^ Sign.base_name s ^ "2")) RS sym) dt_atomTs;
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1256
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1257
    val induct_aux = standard (Goal.prove thy9 [] ind_prems' ind_concl'
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1258
      (fn prems => EVERY
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1259
        ([mk_subgoal 1 (K (K (K aux_ind_concl))),
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1260
          indtac dt_induct tnames 1] @
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1261
         List.concat (map (fn ((_, (_, _, constrs)), (_, constrs')) =>
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1262
           List.concat (map (fn ((cname, cargs), is) =>
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1263
             [simp_tac (HOL_basic_ss addsimps List.concat perm_simps') 1,
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1264
              REPEAT (rtac allI 1)] @
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1265
             List.concat (map
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1266
               (fn ((_, 0), _) => []
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1267
                 | ((i, j), k) => List.concat (map (fn j' =>
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1268
                     let
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1269
                       val DtType (tname, _) = List.nth (cargs, i + j');
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1270
                       val atom = Sign.base_name tname
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1271
                     in
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1272
                       [mk_subgoal 1 (mk_fresh i (i + j) j'
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1273
                          (length cargs) (length dt_atomTs)
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1274
                          (length cargs + length dt_atomTs + 1 + i - k)),
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1275
                        rtac at_finite_select 1,
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1276
                        rtac (PureThy.get_thm thy9 (Name ("at_" ^ atom ^ "_inst"))) 1,
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1277
                        asm_full_simp_tac (simpset_of thy9 addsimps
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1278
                          [PureThy.get_thm thy9 (Name ("fs_" ^ atom ^ "1"))]) 1,
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1279
                        resolve_tac prems 1,
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1280
                        etac exE 1,
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1281
                        asm_full_simp_tac (simpset_of thy9 addsimps
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1282
                          [symmetric fresh_def]) 1]
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1283
                     end) (0 upto j - 1))) (is ~~ (0 upto length is - 1))) @
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1284
             (if exists (not o equal 0 o snd) is then
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1285
                [mk_subgoal 1 (mk_fresh_constr is (length dt_atomTs)),
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1286
                 asm_full_simp_tac (simpset_of thy9 addsimps
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1287
                   (List.concat inject_thms @
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1288
                    alpha @ abs_perm @ abs_fresh @ [abs_fun_finite_supp] @
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1289
                    induct_aux_lemmas)) 1,
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1290
                 dtac sym 1,
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1291
                 asm_full_simp_tac (simpset_of thy9
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1292
                   addsimps induct_aux_lemmas'
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1293
                   addsimprocs [perm_simproc]) 1,
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1294
                 REPEAT (etac conjE 1)]
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1295
              else
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1296
                []) @
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1297
             [(resolve_tac prems THEN_ALL_NEW
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1298
                (atac ORELSE' ((REPEAT o etac allE) THEN' atac))) 1])
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1299
               (constrs ~~ constrs'))) (descr'' ~~ ndescr)) @
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1300
         [REPEAT (eresolve_tac [conjE, allE_Nil] 1),
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1301
          REPEAT (etac allE 1),
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1302
          REPEAT (TRY (rtac conjI 1) THEN asm_full_simp_tac (simpset_of thy9) 1)])));
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1303
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1304
    val induct_aux' = Thm.instantiate ([],
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1305
      map (fn (s, T) =>
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1306
        let val pT = TVar (("'n", 0), HOLogic.typeS) --> T --> HOLogic.boolT
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1307
        in (cterm_of thy9 (Var ((s, 0), pT)), cterm_of thy9 (Free (s, pT))) end)
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1308
          (pnames ~~ recTs) @
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1309
      map (fn (_, f) =>
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1310
        let val f' = Logic.varify f
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1311
        in (cterm_of thy9 f',
19494
2e909d5309f4 Renamed "nominal" theory to "Nominal".
berghofe
parents: 19489
diff changeset
  1312
          cterm_of thy9 (Const ("Nominal.supp", fastype_of f')))
18658
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1313
        end) fresh_fs) induct_aux;
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1314
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1315
    val induct = standard (Goal.prove thy9 [] ind_prems ind_concl
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1316
      (fn prems => EVERY
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1317
         [rtac induct_aux' 1,
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1318
          REPEAT (resolve_tac induct_aux_lemmas 1),
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1319
          REPEAT ((resolve_tac prems THEN_ALL_NEW
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1320
            (etac meta_spec ORELSE' full_simp_tac (HOL_basic_ss addsimps [fresh_def]))) 1)]))
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1321
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1322
    val (_, thy10) = thy9 |>
18016
8f3a80033ba4 Implemented proof of weak induction theorem.
berghofe
parents: 18010
diff changeset
  1323
      Theory.add_path big_name |>
18658
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset
  1324
      PureThy.add_thms [(("induct'", induct_aux), [])] ||>>
317a6f0ef8b9 Implemented proof of (strong) induction rule.
berghofe
parents: 18582
diff changeset