src/Tools/induct.ML
author wenzelm
Thu, 07 Apr 2016 20:51:52 +0200
changeset 62908 d7009a515733
parent 61853 fb7756087101
child 62913 13252110a6fe
permissions -rw-r--r--
clarified mode of ROOT.ML files;
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
     1
(*  Title:      Tools/induct.ML
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
     2
    Author:     Markus Wenzel, TU Muenchen
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
     3
26924
485213276a2a removed obsolete option open;
wenzelm
parents: 26712
diff changeset
     4
Proof by cases, induction, and coinduction.
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
     5
*)
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
     6
37524
a9e38cdbfe07 tuned auxiliary structures;
wenzelm
parents: 37523
diff changeset
     7
signature INDUCT_ARGS =
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
     8
sig
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
     9
  val cases_default: thm
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
    10
  val atomize: thm list
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
    11
  val rulify: thm list
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
    12
  val rulify_fallback: thm list
34987
c1e8af37ee75 Added infrastructure for simplifying equality constraints in cases rules.
berghofe
parents: 34907
diff changeset
    13
  val equal_def: thm
34907
b0aaec87751c Added infrastructure for simplifying equality constraints.
berghofe
parents: 33957
diff changeset
    14
  val dest_def: term -> (term * term) option
58957
c9e744ea8a38 proper context for match_tac etc.;
wenzelm
parents: 58956
diff changeset
    15
  val trivial_tac: Proof.context -> int -> tactic
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
    16
end;
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
    17
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
    18
signature INDUCT =
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
    19
sig
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
    20
  (*rule declarations*)
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
    21
  val vars_of: term -> term list
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
    22
  val dest_rules: Proof.context ->
24861
cc669ca5f382 tuned Induct interface: prefer pred'' over set'';
wenzelm
parents: 24832
diff changeset
    23
    {type_cases: (string * thm) list, pred_cases: (string * thm) list,
cc669ca5f382 tuned Induct interface: prefer pred'' over set'';
wenzelm
parents: 24832
diff changeset
    24
      type_induct: (string * thm) list, pred_induct: (string * thm) list,
cc669ca5f382 tuned Induct interface: prefer pred'' over set'';
wenzelm
parents: 24832
diff changeset
    25
      type_coinduct: (string * thm) list, pred_coinduct: (string * thm) list}
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
    26
  val print_rules: Proof.context -> unit
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
    27
  val lookup_casesT: Proof.context -> string -> thm option
24861
cc669ca5f382 tuned Induct interface: prefer pred'' over set'';
wenzelm
parents: 24832
diff changeset
    28
  val lookup_casesP: Proof.context -> string -> thm option
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
    29
  val lookup_inductT: Proof.context -> string -> thm option
24861
cc669ca5f382 tuned Induct interface: prefer pred'' over set'';
wenzelm
parents: 24832
diff changeset
    30
  val lookup_inductP: Proof.context -> string -> thm option
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
    31
  val lookup_coinductT: Proof.context -> string -> thm option
24861
cc669ca5f382 tuned Induct interface: prefer pred'' over set'';
wenzelm
parents: 24832
diff changeset
    32
  val lookup_coinductP: Proof.context -> string -> thm option
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
    33
  val find_casesT: Proof.context -> typ -> thm list
24861
cc669ca5f382 tuned Induct interface: prefer pred'' over set'';
wenzelm
parents: 24832
diff changeset
    34
  val find_casesP: Proof.context -> term -> thm list
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
    35
  val find_inductT: Proof.context -> typ -> thm list
24861
cc669ca5f382 tuned Induct interface: prefer pred'' over set'';
wenzelm
parents: 24832
diff changeset
    36
  val find_inductP: Proof.context -> term -> thm list
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
    37
  val find_coinductT: Proof.context -> typ -> thm list
24861
cc669ca5f382 tuned Induct interface: prefer pred'' over set'';
wenzelm
parents: 24832
diff changeset
    38
  val find_coinductP: Proof.context -> term -> thm list
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
    39
  val cases_type: string -> attribute
24861
cc669ca5f382 tuned Induct interface: prefer pred'' over set'';
wenzelm
parents: 24832
diff changeset
    40
  val cases_pred: string -> attribute
27140
327a73f02d5f added del attributes;
wenzelm
parents: 26940
diff changeset
    41
  val cases_del: attribute
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
    42
  val induct_type: string -> attribute
24861
cc669ca5f382 tuned Induct interface: prefer pred'' over set'';
wenzelm
parents: 24832
diff changeset
    43
  val induct_pred: string -> attribute
27140
327a73f02d5f added del attributes;
wenzelm
parents: 26940
diff changeset
    44
  val induct_del: attribute
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
    45
  val coinduct_type: string -> attribute
24861
cc669ca5f382 tuned Induct interface: prefer pred'' over set'';
wenzelm
parents: 24832
diff changeset
    46
  val coinduct_pred: string -> attribute
27140
327a73f02d5f added del attributes;
wenzelm
parents: 26940
diff changeset
    47
  val coinduct_del: attribute
51717
9e7d1c139569 simplifier uses proper Proof.context instead of historic type simpset;
wenzelm
parents: 51658
diff changeset
    48
  val map_simpset: (Proof.context -> Proof.context) -> Context.generic -> Context.generic
36602
0cbcdfd9e527 slightly more standard induct_simp_add/del attributes;
wenzelm
parents: 35625
diff changeset
    49
  val induct_simp_add: attribute
0cbcdfd9e527 slightly more standard induct_simp_add/del attributes;
wenzelm
parents: 35625
diff changeset
    50
  val induct_simp_del: attribute
34907
b0aaec87751c Added infrastructure for simplifying equality constraints.
berghofe
parents: 33957
diff changeset
    51
  val no_simpN: string
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
    52
  val casesN: string
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
    53
  val inductN: string
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
    54
  val coinductN: string
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
    55
  val typeN: string
24861
cc669ca5f382 tuned Induct interface: prefer pred'' over set'';
wenzelm
parents: 24832
diff changeset
    56
  val predN: string
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
    57
  val setN: string
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
    58
  (*proof methods*)
45132
09de0d0de645 tuned signature;
wenzelm
parents: 45131
diff changeset
    59
  val arbitrary_tac: Proof.context -> int -> (string * typ) list -> int -> tactic
34907
b0aaec87751c Added infrastructure for simplifying equality constraints.
berghofe
parents: 33957
diff changeset
    60
  val add_defs: (binding option * (term * bool)) option list -> Proof.context ->
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
    61
    (term option list * thm list) * Proof.context
59970
e9f73d87d904 proper context for Object_Logic operations;
wenzelm
parents: 59940
diff changeset
    62
  val atomize_term: Proof.context -> term -> term
54742
7a86358a3c0b proper context for basic Simplifier operations: rewrite_rule, rewrite_goals_rule, rewrite_goals_tac etc.;
wenzelm
parents: 53168
diff changeset
    63
  val atomize_cterm: Proof.context -> conv
7a86358a3c0b proper context for basic Simplifier operations: rewrite_rule, rewrite_goals_rule, rewrite_goals_tac etc.;
wenzelm
parents: 53168
diff changeset
    64
  val atomize_tac: Proof.context -> int -> tactic
7a86358a3c0b proper context for basic Simplifier operations: rewrite_rule, rewrite_goals_rule, rewrite_goals_tac etc.;
wenzelm
parents: 53168
diff changeset
    65
  val inner_atomize_tac: Proof.context -> int -> tactic
59970
e9f73d87d904 proper context for Object_Logic operations;
wenzelm
parents: 59940
diff changeset
    66
  val rulified_term: Proof.context -> thm -> term
54742
7a86358a3c0b proper context for basic Simplifier operations: rewrite_rule, rewrite_goals_rule, rewrite_goals_tac etc.;
wenzelm
parents: 53168
diff changeset
    67
  val rulify_tac: Proof.context -> int -> tactic
34907
b0aaec87751c Added infrastructure for simplifying equality constraints.
berghofe
parents: 33957
diff changeset
    68
  val simplified_rule: Proof.context -> thm -> thm
b0aaec87751c Added infrastructure for simplifying equality constraints.
berghofe
parents: 33957
diff changeset
    69
  val simplify_tac: Proof.context -> int -> tactic
58957
c9e744ea8a38 proper context for match_tac etc.;
wenzelm
parents: 58956
diff changeset
    70
  val trivial_tac: Proof.context -> int -> tactic
34907
b0aaec87751c Added infrastructure for simplifying equality constraints.
berghofe
parents: 33957
diff changeset
    71
  val rotate_tac: int -> int -> int -> tactic
54742
7a86358a3c0b proper context for basic Simplifier operations: rewrite_rule, rewrite_goals_rule, rewrite_goals_tac etc.;
wenzelm
parents: 53168
diff changeset
    72
  val internalize: Proof.context -> int -> thm -> thm
26940
80df961f7900 guess_instance: proper context;
wenzelm
parents: 26924
diff changeset
    73
  val guess_instance: Proof.context -> thm -> int -> thm -> thm Seq.seq
61844
007d3b34080f tuned signature;
wenzelm
parents: 61841
diff changeset
    74
  val cases_context_tactic: bool -> term option list list -> thm option ->
007d3b34080f tuned signature;
wenzelm
parents: 61841
diff changeset
    75
    thm list -> int -> context_tactic
007d3b34080f tuned signature;
wenzelm
parents: 61841
diff changeset
    76
  val cases_tac: Proof.context -> bool -> term option list list -> thm option ->
007d3b34080f tuned signature;
wenzelm
parents: 61841
diff changeset
    77
    thm list -> int -> tactic
27323
385c0ce33173 tuned get_inductT: *all* rules for missing instantiation;
wenzelm
parents: 27140
diff changeset
    78
  val get_inductT: Proof.context -> term option list list -> thm list list
61844
007d3b34080f tuned signature;
wenzelm
parents: 61841
diff changeset
    79
  val gen_induct_context_tactic: ((Rule_Cases.info * int) * thm -> (Rule_Cases.info * int) * thm) ->
61841
4d3527b94f2a more general types Proof.method / context_tactic;
wenzelm
parents: 61268
diff changeset
    80
    bool -> (binding option * (term * bool)) option list list ->
45014
0e847655b2d8 New proof method "induction" that gives induction hypotheses the name IH.
nipkow
parents: 44942
diff changeset
    81
    (string * typ) list list -> term option list -> thm list option ->
61841
4d3527b94f2a more general types Proof.method / context_tactic;
wenzelm
parents: 61268
diff changeset
    82
    thm list -> int -> context_tactic
61844
007d3b34080f tuned signature;
wenzelm
parents: 61841
diff changeset
    83
  val gen_induct_tac: Proof.context ->
007d3b34080f tuned signature;
wenzelm
parents: 61841
diff changeset
    84
    ((Rule_Cases.info * int) * thm -> (Rule_Cases.info * int) * thm) ->
007d3b34080f tuned signature;
wenzelm
parents: 61841
diff changeset
    85
    bool -> (binding option * (term * bool)) option list list ->
007d3b34080f tuned signature;
wenzelm
parents: 61841
diff changeset
    86
    (string * typ) list list -> term option list -> thm list option ->
007d3b34080f tuned signature;
wenzelm
parents: 61841
diff changeset
    87
    thm list -> int -> tactic
007d3b34080f tuned signature;
wenzelm
parents: 61841
diff changeset
    88
  val induct_context_tactic: bool ->
007d3b34080f tuned signature;
wenzelm
parents: 61841
diff changeset
    89
    (binding option * (term * bool)) option list list ->
26924
485213276a2a removed obsolete option open;
wenzelm
parents: 26712
diff changeset
    90
    (string * typ) list list -> term option list -> thm list option ->
61841
4d3527b94f2a more general types Proof.method / context_tactic;
wenzelm
parents: 61268
diff changeset
    91
    thm list -> int -> context_tactic
61844
007d3b34080f tuned signature;
wenzelm
parents: 61841
diff changeset
    92
  val induct_tac: Proof.context -> bool ->
007d3b34080f tuned signature;
wenzelm
parents: 61841
diff changeset
    93
    (binding option * (term * bool)) option list list ->
007d3b34080f tuned signature;
wenzelm
parents: 61841
diff changeset
    94
    (string * typ) list list -> term option list -> thm list option ->
007d3b34080f tuned signature;
wenzelm
parents: 61841
diff changeset
    95
    thm list -> int -> tactic
007d3b34080f tuned signature;
wenzelm
parents: 61841
diff changeset
    96
  val coinduct_context_tactic: term option list -> term option list -> thm option ->
61841
4d3527b94f2a more general types Proof.method / context_tactic;
wenzelm
parents: 61268
diff changeset
    97
    thm list -> int -> context_tactic
61844
007d3b34080f tuned signature;
wenzelm
parents: 61841
diff changeset
    98
  val coinduct_tac: Proof.context -> term option list -> term option list -> thm option ->
007d3b34080f tuned signature;
wenzelm
parents: 61841
diff changeset
    99
    thm list -> int -> tactic
45014
0e847655b2d8 New proof method "induction" that gives induction hypotheses the name IH.
nipkow
parents: 44942
diff changeset
   100
  val gen_induct_setup: binding ->
61841
4d3527b94f2a more general types Proof.method / context_tactic;
wenzelm
parents: 61268
diff changeset
   101
   (bool -> (binding option * (term * bool)) option list list ->
45014
0e847655b2d8 New proof method "induction" that gives induction hypotheses the name IH.
nipkow
parents: 44942
diff changeset
   102
    (string * typ) list list -> term option list -> thm list option ->
61841
4d3527b94f2a more general types Proof.method / context_tactic;
wenzelm
parents: 61268
diff changeset
   103
    thm list -> int -> context_tactic) -> local_theory -> local_theory
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   104
end;
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   105
37524
a9e38cdbfe07 tuned auxiliary structures;
wenzelm
parents: 37523
diff changeset
   106
functor Induct(Induct_Args: INDUCT_ARGS): INDUCT =
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   107
struct
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   108
37523
40c352510065 Net.encode_type;
wenzelm
parents: 36960
diff changeset
   109
(** variables -- ordered left-to-right, preferring right **)
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   110
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   111
fun vars_of tm =
45131
d7e4a7ab1061 misc tuning and clarification;
wenzelm
parents: 45130
diff changeset
   112
  rev (distinct (op =) (Term.fold_aterms (fn t as Var _ => cons t | _ => I) tm []));
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   113
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   114
local
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   115
37523
40c352510065 Net.encode_type;
wenzelm
parents: 36960
diff changeset
   116
val mk_var = Net.encode_type o #2 o Term.dest_Var;
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   117
47060
e2741ec9ae36 prefer explicitly qualified exception List.Empty;
wenzelm
parents: 46961
diff changeset
   118
fun concl_var which thm = mk_var (which (vars_of (Thm.concl_of thm))) handle List.Empty =>
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   119
  raise THM ("No variables in conclusion of rule", 0, [thm]);
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   120
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   121
in
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   122
47060
e2741ec9ae36 prefer explicitly qualified exception List.Empty;
wenzelm
parents: 46961
diff changeset
   123
fun left_var_prem thm = mk_var (hd (vars_of (hd (Thm.prems_of thm)))) handle List.Empty =>
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   124
  raise THM ("No variables in major premise of rule", 0, [thm]);
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   125
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   126
val left_var_concl = concl_var hd;
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   127
val right_var_concl = concl_var List.last;
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   128
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   129
end;
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   130
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   131
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   132
34907
b0aaec87751c Added infrastructure for simplifying equality constraints.
berghofe
parents: 33957
diff changeset
   133
(** constraint simplification **)
b0aaec87751c Added infrastructure for simplifying equality constraints.
berghofe
parents: 33957
diff changeset
   134
b0aaec87751c Added infrastructure for simplifying equality constraints.
berghofe
parents: 33957
diff changeset
   135
(* rearrange parameters and premises to allow application of one-point-rules *)
b0aaec87751c Added infrastructure for simplifying equality constraints.
berghofe
parents: 33957
diff changeset
   136
b0aaec87751c Added infrastructure for simplifying equality constraints.
berghofe
parents: 33957
diff changeset
   137
fun swap_params_conv ctxt i j cv =
b0aaec87751c Added infrastructure for simplifying equality constraints.
berghofe
parents: 33957
diff changeset
   138
  let
b0aaec87751c Added infrastructure for simplifying equality constraints.
berghofe
parents: 33957
diff changeset
   139
    fun conv1 0 ctxt = Conv.forall_conv (cv o snd) ctxt
b0aaec87751c Added infrastructure for simplifying equality constraints.
berghofe
parents: 33957
diff changeset
   140
      | conv1 k ctxt =
b0aaec87751c Added infrastructure for simplifying equality constraints.
berghofe
parents: 33957
diff changeset
   141
          Conv.rewr_conv @{thm swap_params} then_conv
60575
wenzelm
parents: 60455
diff changeset
   142
          Conv.forall_conv (conv1 (k - 1) o snd) ctxt;
34907
b0aaec87751c Added infrastructure for simplifying equality constraints.
berghofe
parents: 33957
diff changeset
   143
    fun conv2 0 ctxt = conv1 j ctxt
60575
wenzelm
parents: 60455
diff changeset
   144
      | conv2 k ctxt = Conv.forall_conv (conv2 (k - 1) o snd) ctxt;
34907
b0aaec87751c Added infrastructure for simplifying equality constraints.
berghofe
parents: 33957
diff changeset
   145
  in conv2 i ctxt end;
b0aaec87751c Added infrastructure for simplifying equality constraints.
berghofe
parents: 33957
diff changeset
   146
b0aaec87751c Added infrastructure for simplifying equality constraints.
berghofe
parents: 33957
diff changeset
   147
fun swap_prems_conv 0 = Conv.all_conv
b0aaec87751c Added infrastructure for simplifying equality constraints.
berghofe
parents: 33957
diff changeset
   148
  | swap_prems_conv i =
37525
a5ac274798fc misc tuning;
wenzelm
parents: 37524
diff changeset
   149
      Conv.implies_concl_conv (swap_prems_conv (i - 1)) then_conv
60575
wenzelm
parents: 60455
diff changeset
   150
      Conv.rewr_conv Drule.swap_prems_eq;
34907
b0aaec87751c Added infrastructure for simplifying equality constraints.
berghofe
parents: 33957
diff changeset
   151
b0aaec87751c Added infrastructure for simplifying equality constraints.
berghofe
parents: 33957
diff changeset
   152
fun find_eq ctxt t =
b0aaec87751c Added infrastructure for simplifying equality constraints.
berghofe
parents: 33957
diff changeset
   153
  let
b0aaec87751c Added infrastructure for simplifying equality constraints.
berghofe
parents: 33957
diff changeset
   154
    val l = length (Logic.strip_params t);
b0aaec87751c Added infrastructure for simplifying equality constraints.
berghofe
parents: 33957
diff changeset
   155
    val Hs = Logic.strip_assums_hyp t;
b0aaec87751c Added infrastructure for simplifying equality constraints.
berghofe
parents: 33957
diff changeset
   156
    fun find (i, t) =
59970
e9f73d87d904 proper context for Object_Logic operations;
wenzelm
parents: 59940
diff changeset
   157
      (case Induct_Args.dest_def (Object_Logic.drop_judgment ctxt t) of
34907
b0aaec87751c Added infrastructure for simplifying equality constraints.
berghofe
parents: 33957
diff changeset
   158
        SOME (Bound j, _) => SOME (i, j)
b0aaec87751c Added infrastructure for simplifying equality constraints.
berghofe
parents: 33957
diff changeset
   159
      | SOME (_, Bound j) => SOME (i, j)
37525
a5ac274798fc misc tuning;
wenzelm
parents: 37524
diff changeset
   160
      | _ => NONE);
34907
b0aaec87751c Added infrastructure for simplifying equality constraints.
berghofe
parents: 33957
diff changeset
   161
  in
37525
a5ac274798fc misc tuning;
wenzelm
parents: 37524
diff changeset
   162
    (case get_first find (map_index I Hs) of
34907
b0aaec87751c Added infrastructure for simplifying equality constraints.
berghofe
parents: 33957
diff changeset
   163
      NONE => NONE
b0aaec87751c Added infrastructure for simplifying equality constraints.
berghofe
parents: 33957
diff changeset
   164
    | SOME (0, 0) => NONE
37525
a5ac274798fc misc tuning;
wenzelm
parents: 37524
diff changeset
   165
    | SOME (i, j) => SOME (i, l - j - 1, j))
34907
b0aaec87751c Added infrastructure for simplifying equality constraints.
berghofe
parents: 33957
diff changeset
   166
  end;
b0aaec87751c Added infrastructure for simplifying equality constraints.
berghofe
parents: 33957
diff changeset
   167
37525
a5ac274798fc misc tuning;
wenzelm
parents: 37524
diff changeset
   168
fun mk_swap_rrule ctxt ct =
59582
0fbed69ff081 tuned signature -- prefer qualified names;
wenzelm
parents: 59498
diff changeset
   169
  (case find_eq ctxt (Thm.term_of ct) of
34907
b0aaec87751c Added infrastructure for simplifying equality constraints.
berghofe
parents: 33957
diff changeset
   170
    NONE => NONE
37525
a5ac274798fc misc tuning;
wenzelm
parents: 37524
diff changeset
   171
  | SOME (i, k, j) => SOME (swap_params_conv ctxt k j (K (swap_prems_conv i)) ct));
34907
b0aaec87751c Added infrastructure for simplifying equality constraints.
berghofe
parents: 33957
diff changeset
   172
37525
a5ac274798fc misc tuning;
wenzelm
parents: 37524
diff changeset
   173
val rearrange_eqs_simproc =
61144
5e94dfead1c2 simplified simproc programming interfaces;
wenzelm
parents: 61058
diff changeset
   174
  Simplifier.make_simproc @{context} "rearrange_eqs"
5e94dfead1c2 simplified simproc programming interfaces;
wenzelm
parents: 61058
diff changeset
   175
   {lhss = [@{term "Pure.all(t)"}],
5e94dfead1c2 simplified simproc programming interfaces;
wenzelm
parents: 61058
diff changeset
   176
    proc = fn _ => fn ctxt => fn ct => mk_swap_rrule ctxt ct,
5e94dfead1c2 simplified simproc programming interfaces;
wenzelm
parents: 61058
diff changeset
   177
    identifier = []};
37525
a5ac274798fc misc tuning;
wenzelm
parents: 37524
diff changeset
   178
34907
b0aaec87751c Added infrastructure for simplifying equality constraints.
berghofe
parents: 33957
diff changeset
   179
b0aaec87751c Added infrastructure for simplifying equality constraints.
berghofe
parents: 33957
diff changeset
   180
(* rotate k premises to the left by j, skipping over first j premises *)
b0aaec87751c Added infrastructure for simplifying equality constraints.
berghofe
parents: 33957
diff changeset
   181
59972
wenzelm
parents: 59971
diff changeset
   182
fun rotate_conv 0 _ 0 = Conv.all_conv
37525
a5ac274798fc misc tuning;
wenzelm
parents: 37524
diff changeset
   183
  | rotate_conv 0 j k = swap_prems_conv j then_conv rotate_conv 1 j (k - 1)
a5ac274798fc misc tuning;
wenzelm
parents: 37524
diff changeset
   184
  | rotate_conv i j k = Conv.implies_concl_conv (rotate_conv (i - 1) j k);
34907
b0aaec87751c Added infrastructure for simplifying equality constraints.
berghofe
parents: 33957
diff changeset
   185
59972
wenzelm
parents: 59971
diff changeset
   186
fun rotate_tac _ 0 = K all_tac
37525
a5ac274798fc misc tuning;
wenzelm
parents: 37524
diff changeset
   187
  | rotate_tac j k = SUBGOAL (fn (goal, i) =>
a5ac274798fc misc tuning;
wenzelm
parents: 37524
diff changeset
   188
      CONVERSION (rotate_conv
a5ac274798fc misc tuning;
wenzelm
parents: 37524
diff changeset
   189
        j (length (Logic.strip_assums_hyp goal) - j - k) k) i);
a5ac274798fc misc tuning;
wenzelm
parents: 37524
diff changeset
   190
34907
b0aaec87751c Added infrastructure for simplifying equality constraints.
berghofe
parents: 33957
diff changeset
   191
b0aaec87751c Added infrastructure for simplifying equality constraints.
berghofe
parents: 33957
diff changeset
   192
(* rulify operators around definition *)
b0aaec87751c Added infrastructure for simplifying equality constraints.
berghofe
parents: 33957
diff changeset
   193
b0aaec87751c Added infrastructure for simplifying equality constraints.
berghofe
parents: 33957
diff changeset
   194
fun rulify_defs_conv ctxt ct =
59582
0fbed69ff081 tuned signature -- prefer qualified names;
wenzelm
parents: 59498
diff changeset
   195
  if exists_subterm (is_some o Induct_Args.dest_def) (Thm.term_of ct) andalso
59970
e9f73d87d904 proper context for Object_Logic operations;
wenzelm
parents: 59940
diff changeset
   196
    not (is_some (Induct_Args.dest_def (Object_Logic.drop_judgment ctxt (Thm.term_of ct))))
34907
b0aaec87751c Added infrastructure for simplifying equality constraints.
berghofe
parents: 33957
diff changeset
   197
  then
b0aaec87751c Added infrastructure for simplifying equality constraints.
berghofe
parents: 33957
diff changeset
   198
    (Conv.forall_conv (rulify_defs_conv o snd) ctxt else_conv
b0aaec87751c Added infrastructure for simplifying equality constraints.
berghofe
parents: 33957
diff changeset
   199
     Conv.implies_conv (Conv.try_conv (rulify_defs_conv ctxt))
b0aaec87751c Added infrastructure for simplifying equality constraints.
berghofe
parents: 33957
diff changeset
   200
       (Conv.try_conv (rulify_defs_conv ctxt)) else_conv
37524
a9e38cdbfe07 tuned auxiliary structures;
wenzelm
parents: 37523
diff changeset
   201
     Conv.first_conv (map Conv.rewr_conv Induct_Args.rulify) then_conv
34907
b0aaec87751c Added infrastructure for simplifying equality constraints.
berghofe
parents: 33957
diff changeset
   202
       Conv.try_conv (rulify_defs_conv ctxt)) ct
b0aaec87751c Added infrastructure for simplifying equality constraints.
berghofe
parents: 33957
diff changeset
   203
  else Conv.no_conv ct;
b0aaec87751c Added infrastructure for simplifying equality constraints.
berghofe
parents: 33957
diff changeset
   204
b0aaec87751c Added infrastructure for simplifying equality constraints.
berghofe
parents: 33957
diff changeset
   205
b0aaec87751c Added infrastructure for simplifying equality constraints.
berghofe
parents: 33957
diff changeset
   206
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   207
(** induct data **)
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   208
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   209
(* rules *)
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   210
30560
0cc3b7f03ade adapted to general Item_Net;
wenzelm
parents: 30528
diff changeset
   211
type rules = (string * thm) Item_Net.T;
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   212
33373
674df68d4df0 adapted Item_Net;
wenzelm
parents: 33368
diff changeset
   213
fun init_rules index : rules =
674df68d4df0 adapted Item_Net;
wenzelm
parents: 33368
diff changeset
   214
  Item_Net.init
674df68d4df0 adapted Item_Net;
wenzelm
parents: 33368
diff changeset
   215
    (fn ((s1, th1), (s2, th2)) => s1 = s2 andalso Thm.eq_thm_prop (th1, th2))
674df68d4df0 adapted Item_Net;
wenzelm
parents: 33368
diff changeset
   216
    (single o index);
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   217
27140
327a73f02d5f added del attributes;
wenzelm
parents: 26940
diff changeset
   218
fun filter_rules (rs: rules) th =
30560
0cc3b7f03ade adapted to general Item_Net;
wenzelm
parents: 30528
diff changeset
   219
  filter (fn (_, th') => Thm.eq_thm_prop (th, th')) (Item_Net.content rs);
27140
327a73f02d5f added del attributes;
wenzelm
parents: 26940
diff changeset
   220
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   221
fun pretty_rules ctxt kind rs =
30560
0cc3b7f03ade adapted to general Item_Net;
wenzelm
parents: 30528
diff changeset
   222
  let val thms = map snd (Item_Net.content rs)
61268
abe08fb15a12 moved remaining display.ML to more_thm.ML;
wenzelm
parents: 61144
diff changeset
   223
  in Pretty.big_list kind (map (Thm.pretty_thm_item ctxt) thms) end;
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   224
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   225
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   226
(* context data *)
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   227
37524
a9e38cdbfe07 tuned auxiliary structures;
wenzelm
parents: 37523
diff changeset
   228
structure Data = Generic_Data
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   229
(
34907
b0aaec87751c Added infrastructure for simplifying equality constraints.
berghofe
parents: 33957
diff changeset
   230
  type T = (rules * rules) * (rules * rules) * (rules * rules) * simpset;
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   231
  val empty =
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   232
    ((init_rules (left_var_prem o #2), init_rules (Thm.major_prem_of o #2)),
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   233
     (init_rules (right_var_concl o #2), init_rules (Thm.major_prem_of o #2)),
34907
b0aaec87751c Added infrastructure for simplifying equality constraints.
berghofe
parents: 33957
diff changeset
   234
     (init_rules (left_var_concl o #2), init_rules (Thm.concl_of o #2)),
51717
9e7d1c139569 simplifier uses proper Proof.context instead of historic type simpset;
wenzelm
parents: 51658
diff changeset
   235
     simpset_of (empty_simpset @{context}
9e7d1c139569 simplifier uses proper Proof.context instead of historic type simpset;
wenzelm
parents: 51658
diff changeset
   236
      addsimprocs [rearrange_eqs_simproc] addsimps [Drule.norm_hhf_eq]));
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   237
  val extend = I;
34907
b0aaec87751c Added infrastructure for simplifying equality constraints.
berghofe
parents: 33957
diff changeset
   238
  fun merge (((casesT1, casesP1), (inductT1, inductP1), (coinductT1, coinductP1), simpset1),
b0aaec87751c Added infrastructure for simplifying equality constraints.
berghofe
parents: 33957
diff changeset
   239
      ((casesT2, casesP2), (inductT2, inductP2), (coinductT2, coinductP2), simpset2)) =
30560
0cc3b7f03ade adapted to general Item_Net;
wenzelm
parents: 30528
diff changeset
   240
    ((Item_Net.merge (casesT1, casesT2), Item_Net.merge (casesP1, casesP2)),
34907
b0aaec87751c Added infrastructure for simplifying equality constraints.
berghofe
parents: 33957
diff changeset
   241
     (Item_Net.merge (inductT1, inductT2), Item_Net.merge (inductP1, inductP2)),
b0aaec87751c Added infrastructure for simplifying equality constraints.
berghofe
parents: 33957
diff changeset
   242
     (Item_Net.merge (coinductT1, coinductT2), Item_Net.merge (coinductP1, coinductP2)),
b0aaec87751c Added infrastructure for simplifying equality constraints.
berghofe
parents: 33957
diff changeset
   243
     merge_ss (simpset1, simpset2));
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   244
);
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   245
37524
a9e38cdbfe07 tuned auxiliary structures;
wenzelm
parents: 37523
diff changeset
   246
val get_local = Data.get o Context.Proof;
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   247
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   248
fun dest_rules ctxt =
34907
b0aaec87751c Added infrastructure for simplifying equality constraints.
berghofe
parents: 33957
diff changeset
   249
  let val ((casesT, casesP), (inductT, inductP), (coinductT, coinductP), _) = get_local ctxt in
30560
0cc3b7f03ade adapted to general Item_Net;
wenzelm
parents: 30528
diff changeset
   250
    {type_cases = Item_Net.content casesT,
0cc3b7f03ade adapted to general Item_Net;
wenzelm
parents: 30528
diff changeset
   251
     pred_cases = Item_Net.content casesP,
0cc3b7f03ade adapted to general Item_Net;
wenzelm
parents: 30528
diff changeset
   252
     type_induct = Item_Net.content inductT,
0cc3b7f03ade adapted to general Item_Net;
wenzelm
parents: 30528
diff changeset
   253
     pred_induct = Item_Net.content inductP,
0cc3b7f03ade adapted to general Item_Net;
wenzelm
parents: 30528
diff changeset
   254
     type_coinduct = Item_Net.content coinductT,
0cc3b7f03ade adapted to general Item_Net;
wenzelm
parents: 30528
diff changeset
   255
     pred_coinduct = Item_Net.content coinductP}
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   256
  end;
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   257
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   258
fun print_rules ctxt =
34907
b0aaec87751c Added infrastructure for simplifying equality constraints.
berghofe
parents: 33957
diff changeset
   259
  let val ((casesT, casesP), (inductT, inductP), (coinductT, coinductP), _) = get_local ctxt in
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   260
   [pretty_rules ctxt "coinduct type:" coinductT,
24861
cc669ca5f382 tuned Induct interface: prefer pred'' over set'';
wenzelm
parents: 24832
diff changeset
   261
    pretty_rules ctxt "coinduct pred:" coinductP,
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   262
    pretty_rules ctxt "induct type:" inductT,
24861
cc669ca5f382 tuned Induct interface: prefer pred'' over set'';
wenzelm
parents: 24832
diff changeset
   263
    pretty_rules ctxt "induct pred:" inductP,
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   264
    pretty_rules ctxt "cases type:" casesT,
24861
cc669ca5f382 tuned Induct interface: prefer pred'' over set'';
wenzelm
parents: 24832
diff changeset
   265
    pretty_rules ctxt "cases pred:" casesP]
56334
6b3739fee456 some shortcuts for chunks, which sometimes avoid bulky string output;
wenzelm
parents: 56245
diff changeset
   266
    |> Pretty.writeln_chunks
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   267
  end;
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   268
24867
e5b55d7be9bb simplified interfaces for outer syntax;
wenzelm
parents: 24865
diff changeset
   269
val _ =
59936
b8ffc3dc9e24 @{command_spec} is superseded by @{command_keyword};
wenzelm
parents: 59929
diff changeset
   270
  Outer_Syntax.command @{command_keyword print_induct_rules}
46961
5c6955f487e5 outer syntax command definitions based on formal command_spec derived from theory header declarations;
wenzelm
parents: 45375
diff changeset
   271
    "print induction and cases rules"
60097
d20ca79d50e4 discontinued pointless warnings: commands are only defined inside a theory context;
wenzelm
parents: 59972
diff changeset
   272
    (Scan.succeed (Toplevel.keep (print_rules o Toplevel.context_of)));
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   273
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   274
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   275
(* access rules *)
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   276
61058
07e5c6c71206 trim context for persistent storage;
wenzelm
parents: 60784
diff changeset
   277
local
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   278
61058
07e5c6c71206 trim context for persistent storage;
wenzelm
parents: 60784
diff changeset
   279
fun lookup_rule which ctxt =
07e5c6c71206 trim context for persistent storage;
wenzelm
parents: 60784
diff changeset
   280
  AList.lookup (op =) (Item_Net.content (which (get_local ctxt)))
07e5c6c71206 trim context for persistent storage;
wenzelm
parents: 60784
diff changeset
   281
  #> Option.map (Thm.transfer (Proof_Context.theory_of ctxt));
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   282
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   283
fun find_rules which how ctxt x =
61058
07e5c6c71206 trim context for persistent storage;
wenzelm
parents: 60784
diff changeset
   284
  Item_Net.retrieve (which (get_local ctxt)) (how x)
07e5c6c71206 trim context for persistent storage;
wenzelm
parents: 60784
diff changeset
   285
  |> map (Thm.transfer (Proof_Context.theory_of ctxt) o snd);
07e5c6c71206 trim context for persistent storage;
wenzelm
parents: 60784
diff changeset
   286
07e5c6c71206 trim context for persistent storage;
wenzelm
parents: 60784
diff changeset
   287
in
07e5c6c71206 trim context for persistent storage;
wenzelm
parents: 60784
diff changeset
   288
07e5c6c71206 trim context for persistent storage;
wenzelm
parents: 60784
diff changeset
   289
val lookup_casesT = lookup_rule (#1 o #1);
07e5c6c71206 trim context for persistent storage;
wenzelm
parents: 60784
diff changeset
   290
val lookup_casesP = lookup_rule (#2 o #1);
07e5c6c71206 trim context for persistent storage;
wenzelm
parents: 60784
diff changeset
   291
val lookup_inductT = lookup_rule (#1 o #2);
07e5c6c71206 trim context for persistent storage;
wenzelm
parents: 60784
diff changeset
   292
val lookup_inductP = lookup_rule (#2 o #2);
07e5c6c71206 trim context for persistent storage;
wenzelm
parents: 60784
diff changeset
   293
val lookup_coinductT = lookup_rule (#1 o #3);
07e5c6c71206 trim context for persistent storage;
wenzelm
parents: 60784
diff changeset
   294
val lookup_coinductP = lookup_rule (#2 o #3);
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   295
37523
40c352510065 Net.encode_type;
wenzelm
parents: 36960
diff changeset
   296
val find_casesT = find_rules (#1 o #1) Net.encode_type;
24861
cc669ca5f382 tuned Induct interface: prefer pred'' over set'';
wenzelm
parents: 24832
diff changeset
   297
val find_casesP = find_rules (#2 o #1) I;
37523
40c352510065 Net.encode_type;
wenzelm
parents: 36960
diff changeset
   298
val find_inductT = find_rules (#1 o #2) Net.encode_type;
24861
cc669ca5f382 tuned Induct interface: prefer pred'' over set'';
wenzelm
parents: 24832
diff changeset
   299
val find_inductP = find_rules (#2 o #2) I;
37523
40c352510065 Net.encode_type;
wenzelm
parents: 36960
diff changeset
   300
val find_coinductT = find_rules (#1 o #3) Net.encode_type;
24861
cc669ca5f382 tuned Induct interface: prefer pred'' over set'';
wenzelm
parents: 24832
diff changeset
   301
val find_coinductP = find_rules (#2 o #3) I;
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   302
61058
07e5c6c71206 trim context for persistent storage;
wenzelm
parents: 60784
diff changeset
   303
end;
07e5c6c71206 trim context for persistent storage;
wenzelm
parents: 60784
diff changeset
   304
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   305
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   306
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   307
(** attributes **)
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   308
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   309
local
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   310
45375
7fe19930dfc9 more explicit representation of rule_attribute vs. declaration_attribute vs. mixed_attribute;
wenzelm
parents: 45328
diff changeset
   311
fun mk_att f g name =
7fe19930dfc9 more explicit representation of rule_attribute vs. declaration_attribute vs. mixed_attribute;
wenzelm
parents: 45328
diff changeset
   312
  Thm.mixed_attribute (fn (context, thm) =>
7fe19930dfc9 more explicit representation of rule_attribute vs. declaration_attribute vs. mixed_attribute;
wenzelm
parents: 45328
diff changeset
   313
    let
7fe19930dfc9 more explicit representation of rule_attribute vs. declaration_attribute vs. mixed_attribute;
wenzelm
parents: 45328
diff changeset
   314
      val thm' = g thm;
61853
fb7756087101 rule_attribute and declaration_attribute implicitly support abstract closure, but mixed_attribute implementations need to be aware of Thm.is_free_dummy;
wenzelm
parents: 61844
diff changeset
   315
      val context' =
fb7756087101 rule_attribute and declaration_attribute implicitly support abstract closure, but mixed_attribute implementations need to be aware of Thm.is_free_dummy;
wenzelm
parents: 61844
diff changeset
   316
        if Thm.is_free_dummy thm then context
fb7756087101 rule_attribute and declaration_attribute implicitly support abstract closure, but mixed_attribute implementations need to be aware of Thm.is_free_dummy;
wenzelm
parents: 61844
diff changeset
   317
        else Data.map (f (name, Thm.trim_context thm')) context;
45375
7fe19930dfc9 more explicit representation of rule_attribute vs. declaration_attribute vs. mixed_attribute;
wenzelm
parents: 45328
diff changeset
   318
    in (context', thm') end);
27140
327a73f02d5f added del attributes;
wenzelm
parents: 26940
diff changeset
   319
37525
a5ac274798fc misc tuning;
wenzelm
parents: 37524
diff changeset
   320
fun del_att which =
59058
a78612c67ec0 renamed "pairself" to "apply2", in accordance to @{apply 2};
wenzelm
parents: 59057
diff changeset
   321
  Thm.declaration_attribute (fn th => Data.map (which (apply2 (fn rs =>
37525
a5ac274798fc misc tuning;
wenzelm
parents: 37524
diff changeset
   322
    fold Item_Net.remove (filter_rules rs th) rs))));
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   323
59057
5b649fb2f2e1 added ML antiquotation @{apply n} or @{apply n(k)};
wenzelm
parents: 58957
diff changeset
   324
fun add_casesT rule x = @{apply 4(1)} (apfst (Item_Net.update rule)) x;
5b649fb2f2e1 added ML antiquotation @{apply n} or @{apply n(k)};
wenzelm
parents: 58957
diff changeset
   325
fun add_casesP rule x = @{apply 4(1)} (apsnd (Item_Net.update rule)) x;
5b649fb2f2e1 added ML antiquotation @{apply n} or @{apply n(k)};
wenzelm
parents: 58957
diff changeset
   326
fun add_inductT rule x = @{apply 4(2)} (apfst (Item_Net.update rule)) x;
5b649fb2f2e1 added ML antiquotation @{apply n} or @{apply n(k)};
wenzelm
parents: 58957
diff changeset
   327
fun add_inductP rule x = @{apply 4(2)} (apsnd (Item_Net.update rule)) x;
5b649fb2f2e1 added ML antiquotation @{apply n} or @{apply n(k)};
wenzelm
parents: 58957
diff changeset
   328
fun add_coinductT rule x = @{apply 4(3)} (apfst (Item_Net.update rule)) x;
5b649fb2f2e1 added ML antiquotation @{apply n} or @{apply n(k)};
wenzelm
parents: 58957
diff changeset
   329
fun add_coinductP rule x = @{apply 4(3)} (apsnd (Item_Net.update rule)) x;
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   330
45375
7fe19930dfc9 more explicit representation of rule_attribute vs. declaration_attribute vs. mixed_attribute;
wenzelm
parents: 45328
diff changeset
   331
val consumes0 = Rule_Cases.default_consumes 0;
7fe19930dfc9 more explicit representation of rule_attribute vs. declaration_attribute vs. mixed_attribute;
wenzelm
parents: 45328
diff changeset
   332
val consumes1 = Rule_Cases.default_consumes 1;
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   333
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   334
in
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   335
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   336
val cases_type = mk_att add_casesT consumes0;
24861
cc669ca5f382 tuned Induct interface: prefer pred'' over set'';
wenzelm
parents: 24832
diff changeset
   337
val cases_pred = mk_att add_casesP consumes1;
59057
5b649fb2f2e1 added ML antiquotation @{apply n} or @{apply n(k)};
wenzelm
parents: 58957
diff changeset
   338
val cases_del = del_att @{apply 4(1)};
27140
327a73f02d5f added del attributes;
wenzelm
parents: 26940
diff changeset
   339
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   340
val induct_type = mk_att add_inductT consumes0;
24861
cc669ca5f382 tuned Induct interface: prefer pred'' over set'';
wenzelm
parents: 24832
diff changeset
   341
val induct_pred = mk_att add_inductP consumes1;
59057
5b649fb2f2e1 added ML antiquotation @{apply n} or @{apply n(k)};
wenzelm
parents: 58957
diff changeset
   342
val induct_del = del_att @{apply 4(2)};
27140
327a73f02d5f added del attributes;
wenzelm
parents: 26940
diff changeset
   343
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   344
val coinduct_type = mk_att add_coinductT consumes0;
24861
cc669ca5f382 tuned Induct interface: prefer pred'' over set'';
wenzelm
parents: 24832
diff changeset
   345
val coinduct_pred = mk_att add_coinductP consumes1;
59057
5b649fb2f2e1 added ML antiquotation @{apply n} or @{apply n(k)};
wenzelm
parents: 58957
diff changeset
   346
val coinduct_del = del_att @{apply 4(3)};
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   347
51717
9e7d1c139569 simplifier uses proper Proof.context instead of historic type simpset;
wenzelm
parents: 51658
diff changeset
   348
fun map_simpset f context =
59057
5b649fb2f2e1 added ML antiquotation @{apply n} or @{apply n(k)};
wenzelm
parents: 58957
diff changeset
   349
  context |> (Data.map o @{apply 4(4)} o Simplifier.simpset_map (Context.proof_of context)) f;
36602
0cbcdfd9e527 slightly more standard induct_simp_add/del attributes;
wenzelm
parents: 35625
diff changeset
   350
0cbcdfd9e527 slightly more standard induct_simp_add/del attributes;
wenzelm
parents: 35625
diff changeset
   351
fun induct_simp f =
51717
9e7d1c139569 simplifier uses proper Proof.context instead of historic type simpset;
wenzelm
parents: 51658
diff changeset
   352
  Thm.declaration_attribute (fn thm => map_simpset (fn ctxt => f (ctxt, [thm])));
36602
0cbcdfd9e527 slightly more standard induct_simp_add/del attributes;
wenzelm
parents: 35625
diff changeset
   353
0cbcdfd9e527 slightly more standard induct_simp_add/del attributes;
wenzelm
parents: 35625
diff changeset
   354
val induct_simp_add = induct_simp (op addsimps);
0cbcdfd9e527 slightly more standard induct_simp_add/del attributes;
wenzelm
parents: 35625
diff changeset
   355
val induct_simp_del = induct_simp (op delsimps);
34907
b0aaec87751c Added infrastructure for simplifying equality constraints.
berghofe
parents: 33957
diff changeset
   356
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   357
end;
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   358
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   359
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   360
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   361
(** attribute syntax **)
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   362
34907
b0aaec87751c Added infrastructure for simplifying equality constraints.
berghofe
parents: 33957
diff changeset
   363
val no_simpN = "no_simp";
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   364
val casesN = "cases";
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   365
val inductN = "induct";
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   366
val coinductN = "coinduct";
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   367
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   368
val typeN = "type";
24861
cc669ca5f382 tuned Induct interface: prefer pred'' over set'';
wenzelm
parents: 24832
diff changeset
   369
val predN = "pred";
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   370
val setN = "set";
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   371
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   372
local
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   373
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   374
fun spec k arg =
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   375
  Scan.lift (Args.$$$ k -- Args.colon) |-- arg ||
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   376
  Scan.lift (Args.$$$ k) >> K "";
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   377
30528
7173bf123335 simplified attribute setup;
wenzelm
parents: 30515
diff changeset
   378
fun attrib add_type add_pred del =
55951
c07d184aebe9 tuned signature -- more uniform check_type_name/read_type_name;
wenzelm
parents: 54742
diff changeset
   379
  spec typeN (Args.type_name {proper = false, strict = false}) >> add_type ||
55954
a29aefc88c8d more uniform check_const/read_const;
wenzelm
parents: 55951
diff changeset
   380
  spec predN (Args.const {proper = false, strict = false}) >> add_pred ||
a29aefc88c8d more uniform check_const/read_const;
wenzelm
parents: 55951
diff changeset
   381
  spec setN (Args.const {proper = false, strict = false}) >> add_pred ||
30528
7173bf123335 simplified attribute setup;
wenzelm
parents: 30515
diff changeset
   382
  Scan.lift Args.del >> K del;
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   383
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   384
in
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   385
58826
2ed2eaabe3df modernized setup;
wenzelm
parents: 58002
diff changeset
   386
val _ =
59940
087d81f5213e local setup of induction tools, with restricted access to auxiliary consts;
wenzelm
parents: 59936
diff changeset
   387
  Theory.local_setup
087d81f5213e local setup of induction tools, with restricted access to auxiliary consts;
wenzelm
parents: 59936
diff changeset
   388
   (Attrib.local_setup @{binding cases} (attrib cases_type cases_pred cases_del)
58826
2ed2eaabe3df modernized setup;
wenzelm
parents: 58002
diff changeset
   389
      "declaration of cases rule" #>
59940
087d81f5213e local setup of induction tools, with restricted access to auxiliary consts;
wenzelm
parents: 59936
diff changeset
   390
    Attrib.local_setup @{binding induct} (attrib induct_type induct_pred induct_del)
58826
2ed2eaabe3df modernized setup;
wenzelm
parents: 58002
diff changeset
   391
      "declaration of induction rule" #>
59940
087d81f5213e local setup of induction tools, with restricted access to auxiliary consts;
wenzelm
parents: 59936
diff changeset
   392
    Attrib.local_setup @{binding coinduct} (attrib coinduct_type coinduct_pred coinduct_del)
58826
2ed2eaabe3df modernized setup;
wenzelm
parents: 58002
diff changeset
   393
      "declaration of coinduction rule" #>
59940
087d81f5213e local setup of induction tools, with restricted access to auxiliary consts;
wenzelm
parents: 59936
diff changeset
   394
    Attrib.local_setup @{binding induct_simp} (Attrib.add_del induct_simp_add induct_simp_del)
58826
2ed2eaabe3df modernized setup;
wenzelm
parents: 58002
diff changeset
   395
      "declaration of rules for simplifying induction or cases rules");
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   396
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   397
end;
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   398
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   399
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   400
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   401
(** method utils **)
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   402
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   403
(* alignment *)
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   404
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   405
fun align_left msg xs ys =
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   406
  let val m = length xs and n = length ys
33957
e9afca2118d4 normalized uncurry take/drop
haftmann
parents: 33955
diff changeset
   407
  in if m < n then error msg else (take n xs ~~ ys) end;
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   408
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   409
fun align_right msg xs ys =
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   410
  let val m = length xs and n = length ys
33957
e9afca2118d4 normalized uncurry take/drop
haftmann
parents: 33955
diff changeset
   411
  in if m < n then error msg else (drop (m - n) xs ~~ ys) end;
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   412
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   413
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   414
(* prep_inst *)
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   415
32432
64f30bdd3ba1 modernized messages -- eliminated ctyp/cterm operations;
wenzelm
parents: 32188
diff changeset
   416
fun prep_inst ctxt align tune (tm, ts) =
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   417
  let
60784
4f590c08fd5d updated to infer_instantiate;
wenzelm
parents: 60642
diff changeset
   418
    fun prep_var (Var (x, xT), SOME t) =
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   419
          let
59843
wenzelm
parents: 59621
diff changeset
   420
            val ct = Thm.cterm_of ctxt (tune t);
59586
ddf6deaadfe8 clarified signature;
wenzelm
parents: 59582
diff changeset
   421
            val tT = Thm.typ_of_cterm ct;
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   422
          in
60784
4f590c08fd5d updated to infer_instantiate;
wenzelm
parents: 60642
diff changeset
   423
            if Type.could_unify (tT, xT) then SOME (x, ct)
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   424
            else error (Pretty.string_of (Pretty.block
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   425
             [Pretty.str "Ill-typed instantiation:", Pretty.fbrk,
32432
64f30bdd3ba1 modernized messages -- eliminated ctyp/cterm operations;
wenzelm
parents: 32188
diff changeset
   426
              Syntax.pretty_term ctxt (Thm.term_of ct), Pretty.str " ::", Pretty.brk 1,
64f30bdd3ba1 modernized messages -- eliminated ctyp/cterm operations;
wenzelm
parents: 32188
diff changeset
   427
              Syntax.pretty_typ ctxt tT]))
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   428
          end
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   429
      | prep_var (_, NONE) = NONE;
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   430
    val xs = vars_of tm;
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   431
  in
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   432
    align "Rule has fewer variables than instantiations given" xs ts
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   433
    |> map_filter prep_var
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   434
  end;
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   435
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   436
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   437
(* trace_rules *)
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   438
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   439
fun trace_rules _ kind [] = error ("Unable to figure out " ^ kind ^ " rule")
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   440
  | trace_rules ctxt _ rules = Method.trace ctxt rules;
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   441
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   442
34987
c1e8af37ee75 Added infrastructure for simplifying equality constraints in cases rules.
berghofe
parents: 34907
diff changeset
   443
(* mark equality constraints in cases rule *)
c1e8af37ee75 Added infrastructure for simplifying equality constraints in cases rules.
berghofe
parents: 34907
diff changeset
   444
37524
a9e38cdbfe07 tuned auxiliary structures;
wenzelm
parents: 37523
diff changeset
   445
val equal_def' = Thm.symmetric Induct_Args.equal_def;
34987
c1e8af37ee75 Added infrastructure for simplifying equality constraints in cases rules.
berghofe
parents: 34907
diff changeset
   446
c1e8af37ee75 Added infrastructure for simplifying equality constraints in cases rules.
berghofe
parents: 34907
diff changeset
   447
fun mark_constraints n ctxt = Conv.fconv_rule
45130
563caf031b50 tuned ML style;
wenzelm
parents: 45014
diff changeset
   448
  (Conv.prems_conv ~1 (Conv.params_conv ~1 (K (Conv.prems_conv n
54742
7a86358a3c0b proper context for basic Simplifier operations: rewrite_rule, rewrite_goals_rule, rewrite_goals_tac etc.;
wenzelm
parents: 53168
diff changeset
   449
     (Raw_Simplifier.rewrite ctxt false [equal_def']))) ctxt));
34987
c1e8af37ee75 Added infrastructure for simplifying equality constraints in cases rules.
berghofe
parents: 34907
diff changeset
   450
54742
7a86358a3c0b proper context for basic Simplifier operations: rewrite_rule, rewrite_goals_rule, rewrite_goals_tac etc.;
wenzelm
parents: 53168
diff changeset
   451
fun unmark_constraints ctxt =
7a86358a3c0b proper context for basic Simplifier operations: rewrite_rule, rewrite_goals_rule, rewrite_goals_tac etc.;
wenzelm
parents: 53168
diff changeset
   452
  Conv.fconv_rule (Raw_Simplifier.rewrite ctxt true [Induct_Args.equal_def]);
34987
c1e8af37ee75 Added infrastructure for simplifying equality constraints in cases rules.
berghofe
parents: 34907
diff changeset
   453
37525
a5ac274798fc misc tuning;
wenzelm
parents: 37524
diff changeset
   454
34987
c1e8af37ee75 Added infrastructure for simplifying equality constraints in cases rules.
berghofe
parents: 34907
diff changeset
   455
(* simplify *)
c1e8af37ee75 Added infrastructure for simplifying equality constraints in cases rules.
berghofe
parents: 34907
diff changeset
   456
c1e8af37ee75 Added infrastructure for simplifying equality constraints in cases rules.
berghofe
parents: 34907
diff changeset
   457
fun simplify_conv' ctxt =
51717
9e7d1c139569 simplifier uses proper Proof.context instead of historic type simpset;
wenzelm
parents: 51658
diff changeset
   458
  Simplifier.full_rewrite (put_simpset (#4 (get_local ctxt)) ctxt);
34987
c1e8af37ee75 Added infrastructure for simplifying equality constraints in cases rules.
berghofe
parents: 34907
diff changeset
   459
c1e8af37ee75 Added infrastructure for simplifying equality constraints in cases rules.
berghofe
parents: 34907
diff changeset
   460
fun simplify_conv ctxt ct =
59582
0fbed69ff081 tuned signature -- prefer qualified names;
wenzelm
parents: 59498
diff changeset
   461
  if exists_subterm (is_some o Induct_Args.dest_def) (Thm.term_of ct) then
34987
c1e8af37ee75 Added infrastructure for simplifying equality constraints in cases rules.
berghofe
parents: 34907
diff changeset
   462
    (Conv.try_conv (rulify_defs_conv ctxt) then_conv simplify_conv' ctxt) ct
c1e8af37ee75 Added infrastructure for simplifying equality constraints in cases rules.
berghofe
parents: 34907
diff changeset
   463
  else Conv.all_conv ct;
c1e8af37ee75 Added infrastructure for simplifying equality constraints in cases rules.
berghofe
parents: 34907
diff changeset
   464
c1e8af37ee75 Added infrastructure for simplifying equality constraints in cases rules.
berghofe
parents: 34907
diff changeset
   465
fun gen_simplified_rule cv ctxt =
c1e8af37ee75 Added infrastructure for simplifying equality constraints in cases rules.
berghofe
parents: 34907
diff changeset
   466
  Conv.fconv_rule (Conv.prems_conv ~1 (cv ctxt));
c1e8af37ee75 Added infrastructure for simplifying equality constraints in cases rules.
berghofe
parents: 34907
diff changeset
   467
c1e8af37ee75 Added infrastructure for simplifying equality constraints in cases rules.
berghofe
parents: 34907
diff changeset
   468
val simplified_rule' = gen_simplified_rule simplify_conv';
c1e8af37ee75 Added infrastructure for simplifying equality constraints in cases rules.
berghofe
parents: 34907
diff changeset
   469
val simplified_rule = gen_simplified_rule simplify_conv;
c1e8af37ee75 Added infrastructure for simplifying equality constraints in cases rules.
berghofe
parents: 34907
diff changeset
   470
c1e8af37ee75 Added infrastructure for simplifying equality constraints in cases rules.
berghofe
parents: 34907
diff changeset
   471
fun simplify_tac ctxt = CONVERSION (simplify_conv ctxt);
c1e8af37ee75 Added infrastructure for simplifying equality constraints in cases rules.
berghofe
parents: 34907
diff changeset
   472
37524
a9e38cdbfe07 tuned auxiliary structures;
wenzelm
parents: 37523
diff changeset
   473
val trivial_tac = Induct_Args.trivial_tac;
34987
c1e8af37ee75 Added infrastructure for simplifying equality constraints in cases rules.
berghofe
parents: 34907
diff changeset
   474
c1e8af37ee75 Added infrastructure for simplifying equality constraints in cases rules.
berghofe
parents: 34907
diff changeset
   475
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   476
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   477
(** cases method **)
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   478
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   479
(*
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   480
  rule selection scheme:
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   481
          cases         - default case split
24861
cc669ca5f382 tuned Induct interface: prefer pred'' over set'';
wenzelm
parents: 24832
diff changeset
   482
    `A t` cases ...     - predicate/set cases
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   483
          cases t       - type cases
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   484
    ...   cases ... r   - explicit rule
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   485
*)
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   486
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   487
local
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   488
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   489
fun get_casesT ctxt ((SOME t :: _) :: _) = find_casesT ctxt (Term.fastype_of t)
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   490
  | get_casesT _ _ = [];
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   491
24861
cc669ca5f382 tuned Induct interface: prefer pred'' over set'';
wenzelm
parents: 24832
diff changeset
   492
fun get_casesP ctxt (fact :: _) = find_casesP ctxt (Thm.concl_of fact)
cc669ca5f382 tuned Induct interface: prefer pred'' over set'';
wenzelm
parents: 24832
diff changeset
   493
  | get_casesP _ _ = [];
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   494
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   495
in
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   496
61844
007d3b34080f tuned signature;
wenzelm
parents: 61841
diff changeset
   497
fun cases_context_tactic simp insts opt_rule facts i : context_tactic =
61841
4d3527b94f2a more general types Proof.method / context_tactic;
wenzelm
parents: 61268
diff changeset
   498
  fn (ctxt, st) =>
4d3527b94f2a more general types Proof.method / context_tactic;
wenzelm
parents: 61268
diff changeset
   499
    let
4d3527b94f2a more general types Proof.method / context_tactic;
wenzelm
parents: 61268
diff changeset
   500
      fun inst_rule r =
4d3527b94f2a more general types Proof.method / context_tactic;
wenzelm
parents: 61268
diff changeset
   501
        (if null insts then r
4d3527b94f2a more general types Proof.method / context_tactic;
wenzelm
parents: 61268
diff changeset
   502
         else
4d3527b94f2a more general types Proof.method / context_tactic;
wenzelm
parents: 61268
diff changeset
   503
           (align_left "Rule has fewer premises than arguments given" (Thm.prems_of r) insts
4d3527b94f2a more general types Proof.method / context_tactic;
wenzelm
parents: 61268
diff changeset
   504
             |> maps (prep_inst ctxt align_left I)
4d3527b94f2a more general types Proof.method / context_tactic;
wenzelm
parents: 61268
diff changeset
   505
             |> infer_instantiate ctxt) r)
4d3527b94f2a more general types Proof.method / context_tactic;
wenzelm
parents: 61268
diff changeset
   506
        |> simp ? mark_constraints (Rule_Cases.get_constraints r) ctxt
4d3527b94f2a more general types Proof.method / context_tactic;
wenzelm
parents: 61268
diff changeset
   507
        |> pair (Rule_Cases.get r);
4d3527b94f2a more general types Proof.method / context_tactic;
wenzelm
parents: 61268
diff changeset
   508
  
4d3527b94f2a more general types Proof.method / context_tactic;
wenzelm
parents: 61268
diff changeset
   509
      val (opt_rule', facts') =
4d3527b94f2a more general types Proof.method / context_tactic;
wenzelm
parents: 61268
diff changeset
   510
        (case (opt_rule, facts) of
4d3527b94f2a more general types Proof.method / context_tactic;
wenzelm
parents: 61268
diff changeset
   511
          (NONE, th :: ths) =>
4d3527b94f2a more general types Proof.method / context_tactic;
wenzelm
parents: 61268
diff changeset
   512
            if is_some (Object_Logic.elim_concl ctxt th) then (SOME th, ths)
4d3527b94f2a more general types Proof.method / context_tactic;
wenzelm
parents: 61268
diff changeset
   513
            else (opt_rule, facts)
4d3527b94f2a more general types Proof.method / context_tactic;
wenzelm
parents: 61268
diff changeset
   514
        | _ => (opt_rule, facts));
4d3527b94f2a more general types Proof.method / context_tactic;
wenzelm
parents: 61268
diff changeset
   515
  
4d3527b94f2a more general types Proof.method / context_tactic;
wenzelm
parents: 61268
diff changeset
   516
      val ruleq =
4d3527b94f2a more general types Proof.method / context_tactic;
wenzelm
parents: 61268
diff changeset
   517
        (case opt_rule' of
4d3527b94f2a more general types Proof.method / context_tactic;
wenzelm
parents: 61268
diff changeset
   518
          SOME r => Seq.single (inst_rule r)
4d3527b94f2a more general types Proof.method / context_tactic;
wenzelm
parents: 61268
diff changeset
   519
        | NONE =>
4d3527b94f2a more general types Proof.method / context_tactic;
wenzelm
parents: 61268
diff changeset
   520
            (get_casesP ctxt facts' @ get_casesT ctxt insts @ [Induct_Args.cases_default])
4d3527b94f2a more general types Proof.method / context_tactic;
wenzelm
parents: 61268
diff changeset
   521
            |> tap (trace_rules ctxt casesN)
4d3527b94f2a more general types Proof.method / context_tactic;
wenzelm
parents: 61268
diff changeset
   522
            |> Seq.of_list |> Seq.maps (Seq.try inst_rule));
4d3527b94f2a more general types Proof.method / context_tactic;
wenzelm
parents: 61268
diff changeset
   523
    in
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   524
      ruleq
60455
0c4077939278 implicit rule for method "cases";
wenzelm
parents: 60313
diff changeset
   525
      |> Seq.maps (Rule_Cases.consume ctxt [] facts')
0c4077939278 implicit rule for method "cases";
wenzelm
parents: 60313
diff changeset
   526
      |> Seq.maps (fn ((cases, (_, facts'')), rule) =>
45131
d7e4a7ab1061 misc tuning and clarification;
wenzelm
parents: 45130
diff changeset
   527
        let
d7e4a7ab1061 misc tuning and clarification;
wenzelm
parents: 45130
diff changeset
   528
          val rule' = rule
54742
7a86358a3c0b proper context for basic Simplifier operations: rewrite_rule, rewrite_goals_rule, rewrite_goals_tac etc.;
wenzelm
parents: 53168
diff changeset
   529
            |> simp ? (simplified_rule' ctxt #> unmark_constraints ctxt);
34987
c1e8af37ee75 Added infrastructure for simplifying equality constraints in cases rules.
berghofe
parents: 34907
diff changeset
   530
        in
61841
4d3527b94f2a more general types Proof.method / context_tactic;
wenzelm
parents: 61268
diff changeset
   531
          CONTEXT_CASES (Rule_Cases.make_common ctxt
59970
e9f73d87d904 proper context for Object_Logic operations;
wenzelm
parents: 59940
diff changeset
   532
              (Thm.prop_of (Rule_Cases.internalize_params rule')) cases)
61841
4d3527b94f2a more general types Proof.method / context_tactic;
wenzelm
parents: 61268
diff changeset
   533
            ((Method.insert_tac ctxt facts'' THEN' resolve_tac ctxt [rule'] THEN_ALL_NEW
4d3527b94f2a more general types Proof.method / context_tactic;
wenzelm
parents: 61268
diff changeset
   534
                (if simp then TRY o trivial_tac ctxt else K all_tac)) i) (ctxt, st)
34987
c1e8af37ee75 Added infrastructure for simplifying equality constraints in cases rules.
berghofe
parents: 34907
diff changeset
   535
        end)
61841
4d3527b94f2a more general types Proof.method / context_tactic;
wenzelm
parents: 61268
diff changeset
   536
    end;
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   537
61844
007d3b34080f tuned signature;
wenzelm
parents: 61841
diff changeset
   538
fun cases_tac ctxt x1 x2 x3 x4 x5 =
007d3b34080f tuned signature;
wenzelm
parents: 61841
diff changeset
   539
  Method.NO_CONTEXT_TACTIC ctxt (cases_context_tactic x1 x2 x3 x4 x5);
007d3b34080f tuned signature;
wenzelm
parents: 61841
diff changeset
   540
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   541
end;
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   542
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   543
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   544
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   545
(** induct method **)
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   546
59929
wenzelm
parents: 59843
diff changeset
   547
val conjunction_congs = @{thms Pure.all_conjunction imp_conjunction};
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   548
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   549
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   550
(* atomize *)
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   551
59970
e9f73d87d904 proper context for Object_Logic operations;
wenzelm
parents: 59940
diff changeset
   552
fun atomize_term ctxt =
e9f73d87d904 proper context for Object_Logic operations;
wenzelm
parents: 59940
diff changeset
   553
  Raw_Simplifier.rewrite_term (Proof_Context.theory_of ctxt) Induct_Args.atomize []
e9f73d87d904 proper context for Object_Logic operations;
wenzelm
parents: 59940
diff changeset
   554
  #> Object_Logic.drop_judgment ctxt;
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   555
54742
7a86358a3c0b proper context for basic Simplifier operations: rewrite_rule, rewrite_goals_rule, rewrite_goals_tac etc.;
wenzelm
parents: 53168
diff changeset
   556
fun atomize_cterm ctxt = Raw_Simplifier.rewrite ctxt true Induct_Args.atomize;
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   557
54742
7a86358a3c0b proper context for basic Simplifier operations: rewrite_rule, rewrite_goals_rule, rewrite_goals_tac etc.;
wenzelm
parents: 53168
diff changeset
   558
fun atomize_tac ctxt = rewrite_goal_tac ctxt Induct_Args.atomize;
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   559
54742
7a86358a3c0b proper context for basic Simplifier operations: rewrite_rule, rewrite_goals_rule, rewrite_goals_tac etc.;
wenzelm
parents: 53168
diff changeset
   560
fun inner_atomize_tac ctxt =
7a86358a3c0b proper context for basic Simplifier operations: rewrite_rule, rewrite_goals_rule, rewrite_goals_tac etc.;
wenzelm
parents: 53168
diff changeset
   561
  rewrite_goal_tac ctxt (map Thm.symmetric conjunction_congs) THEN' atomize_tac ctxt;
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   562
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   563
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   564
(* rulify *)
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   565
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   566
fun rulify_term thy =
41228
e1fce873b814 renamed structure MetaSimplifier to raw_Simplifer, to emphasize its meaning;
wenzelm
parents: 38715
diff changeset
   567
  Raw_Simplifier.rewrite_term thy (Induct_Args.rulify @ conjunction_congs) [] #>
e1fce873b814 renamed structure MetaSimplifier to raw_Simplifer, to emphasize its meaning;
wenzelm
parents: 38715
diff changeset
   568
  Raw_Simplifier.rewrite_term thy Induct_Args.rulify_fallback [];
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   569
59970
e9f73d87d904 proper context for Object_Logic operations;
wenzelm
parents: 59940
diff changeset
   570
fun rulified_term ctxt thm =
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   571
  let
59970
e9f73d87d904 proper context for Object_Logic operations;
wenzelm
parents: 59940
diff changeset
   572
    val rulify = rulify_term (Proof_Context.theory_of ctxt);
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   573
    val (As, B) = Logic.strip_horn (Thm.prop_of thm);
59970
e9f73d87d904 proper context for Object_Logic operations;
wenzelm
parents: 59940
diff changeset
   574
  in Logic.list_implies (map rulify As, rulify B) end;
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   575
54742
7a86358a3c0b proper context for basic Simplifier operations: rewrite_rule, rewrite_goals_rule, rewrite_goals_tac etc.;
wenzelm
parents: 53168
diff changeset
   576
fun rulify_tac ctxt =
7a86358a3c0b proper context for basic Simplifier operations: rewrite_rule, rewrite_goals_rule, rewrite_goals_tac etc.;
wenzelm
parents: 53168
diff changeset
   577
  rewrite_goal_tac ctxt (Induct_Args.rulify @ conjunction_congs) THEN'
7a86358a3c0b proper context for basic Simplifier operations: rewrite_rule, rewrite_goals_rule, rewrite_goals_tac etc.;
wenzelm
parents: 53168
diff changeset
   578
  rewrite_goal_tac ctxt Induct_Args.rulify_fallback THEN'
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   579
  Goal.conjunction_tac THEN_ALL_NEW
59929
wenzelm
parents: 59843
diff changeset
   580
  (rewrite_goal_tac ctxt @{thms Pure.conjunction_imp} THEN' Goal.norm_hhf_tac ctxt);
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   581
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   582
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   583
(* prepare rule *)
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   584
32432
64f30bdd3ba1 modernized messages -- eliminated ctyp/cterm operations;
wenzelm
parents: 32188
diff changeset
   585
fun rule_instance ctxt inst rule =
60784
4f590c08fd5d updated to infer_instantiate;
wenzelm
parents: 60642
diff changeset
   586
  infer_instantiate ctxt (prep_inst ctxt align_left I (Thm.prop_of rule, inst)) rule;
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   587
54742
7a86358a3c0b proper context for basic Simplifier operations: rewrite_rule, rewrite_goals_rule, rewrite_goals_tac etc.;
wenzelm
parents: 53168
diff changeset
   588
fun internalize ctxt k th =
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   589
  th |> Thm.permute_prems 0 k
54742
7a86358a3c0b proper context for basic Simplifier operations: rewrite_rule, rewrite_goals_rule, rewrite_goals_tac etc.;
wenzelm
parents: 53168
diff changeset
   590
  |> Conv.fconv_rule (Conv.concl_conv (Thm.nprems_of th - k) (atomize_cterm ctxt));
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   591
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   592
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   593
(* guess rule instantiation -- cannot handle pending goal parameters *)
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   594
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   595
local
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   596
59843
wenzelm
parents: 59621
diff changeset
   597
fun dest_env ctxt env =
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   598
  let
32032
a6a6e8031c14 tuned/modernized Envir operations;
wenzelm
parents: 30722
diff changeset
   599
    val pairs = Vartab.dest (Envir.term_env env);
a6a6e8031c14 tuned/modernized Envir operations;
wenzelm
parents: 30722
diff changeset
   600
    val types = Vartab.dest (Envir.type_env env);
59843
wenzelm
parents: 59621
diff changeset
   601
    val ts = map (Thm.cterm_of ctxt o Envir.norm_term env o #2 o #2) pairs;
60642
48dd1cefb4ae simplified Thm.instantiate and derivatives: the LHS refers to non-certified variables -- this merely serves as index into already certified structures (or is ignored);
wenzelm
parents: 60576
diff changeset
   602
    val xs = map #1 pairs ~~ map Thm.typ_of_cterm ts;
48dd1cefb4ae simplified Thm.instantiate and derivatives: the LHS refers to non-certified variables -- this merely serves as index into already certified structures (or is ignored);
wenzelm
parents: 60576
diff changeset
   603
  in (map (fn (ai, (S, T)) => ((ai, S), Thm.ctyp_of ctxt T)) types, xs ~~ ts) end;
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   604
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   605
in
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   606
26940
80df961f7900 guess_instance: proper context;
wenzelm
parents: 26924
diff changeset
   607
fun guess_instance ctxt rule i st =
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   608
  let
26626
c6231d64d264 rep_cterm/rep_thm: no longer dereference theory_ref;
wenzelm
parents: 26568
diff changeset
   609
    val maxidx = Thm.maxidx_of st;
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   610
    val goal = Thm.term_of (Thm.cprem_of st i);  (*exception Subscript*)
29276
94b1ffec9201 qualified Term.rename_wrt_term;
wenzelm
parents: 28965
diff changeset
   611
    val params = rev (Term.rename_wrt_term goal (Logic.strip_params goal));
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   612
  in
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   613
    if not (null params) then
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   614
      (warning ("Cannot determine rule instantiation due to pending parameter(s): " ^
49660
de49d9b4d7bc more explicit Syntax_Trans.mark_bound_abs/mark_bound_body: preserve type information for show_markup;
wenzelm
parents: 47060
diff changeset
   615
        commas_quote (map (Syntax.string_of_term ctxt o Syntax_Trans.mark_bound_abs) params));
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   616
      Seq.single rule)
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   617
    else
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   618
      let
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   619
        val rule' = Thm.incr_indexes (maxidx + 1) rule;
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   620
        val concl = Logic.strip_assums_concl goal;
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   621
      in
58950
d07464875dd4 optional proof context for unify operations, for the sake of proper local options;
wenzelm
parents: 58893
diff changeset
   622
        Unify.smash_unifiers (Context.Proof ctxt)
d07464875dd4 optional proof context for unify operations, for the sake of proper local options;
wenzelm
parents: 58893
diff changeset
   623
          [(Thm.concl_of rule', concl)] (Envir.empty (Thm.maxidx_of rule'))
59843
wenzelm
parents: 59621
diff changeset
   624
        |> Seq.map (fn env => Drule.instantiate_normalize (dest_env ctxt env) rule')
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   625
      end
43333
2bdec7f430d3 renamed Drule.instantiate to Drule.instantiate_normalize to emphasize its meaning as opposed to plain Thm.instantiate;
wenzelm
parents: 43326
diff changeset
   626
  end
2bdec7f430d3 renamed Drule.instantiate to Drule.instantiate_normalize to emphasize its meaning as opposed to plain Thm.instantiate;
wenzelm
parents: 43326
diff changeset
   627
  handle General.Subscript => Seq.empty;
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   628
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   629
end;
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   630
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   631
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   632
(* special renaming of rule parameters *)
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   633
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   634
fun special_rename_params ctxt [[SOME (Free (z, Type (T, _)))]] [thm] =
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   635
      let
42488
4638622bcaa1 reorganized fixes as specialized (global) name space;
wenzelm
parents: 42361
diff changeset
   636
        val x = Name.clean (Variable.revert_fixed ctxt z);
59972
wenzelm
parents: 59971
diff changeset
   637
        fun index _ [] = []
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   638
          | index i (y :: ys) =
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   639
              if x = y then x ^ string_of_int i :: index (i + 1) ys
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   640
              else y :: index i ys;
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   641
        fun rename_params [] = []
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   642
          | rename_params ((y, Type (U, _)) :: ys) =
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   643
              (if U = T then x else y) :: rename_params ys
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   644
          | rename_params ((y, _) :: ys) = y :: rename_params ys;
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   645
        fun rename_asm A =
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   646
          let
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   647
            val xs = rename_params (Logic.strip_params A);
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   648
            val xs' =
28375
c879d88d038a eliminated polymorphic equality;
wenzelm
parents: 28083
diff changeset
   649
              (case filter (fn x' => x' = x) xs of
60575
wenzelm
parents: 60455
diff changeset
   650
                [] => xs
wenzelm
parents: 60455
diff changeset
   651
              | [_] => xs
wenzelm
parents: 60455
diff changeset
   652
              | _ => index 1 xs);
45328
e5b33eecbf6e tuned signature;
wenzelm
parents: 45156
diff changeset
   653
          in Logic.list_rename_params xs' A end;
60313
2a0b42cd58fb tuned -- more direct Thm.renamed_prop;
wenzelm
parents: 60097
diff changeset
   654
        fun rename_prop prop =
2a0b42cd58fb tuned -- more direct Thm.renamed_prop;
wenzelm
parents: 60097
diff changeset
   655
          let val (As, C) = Logic.strip_horn prop
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   656
          in Logic.list_implies (map rename_asm As, C) end;
60313
2a0b42cd58fb tuned -- more direct Thm.renamed_prop;
wenzelm
parents: 60097
diff changeset
   657
        val thm' = Thm.renamed_prop (rename_prop (Thm.prop_of thm)) thm;
33368
b1cf34f1855c modernized structure Rule_Cases;
wenzelm
parents: 33303
diff changeset
   658
      in [Rule_Cases.save thm thm'] end
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   659
  | special_rename_params _ _ ths = ths;
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   660
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   661
45132
09de0d0de645 tuned signature;
wenzelm
parents: 45131
diff changeset
   662
(* arbitrary_tac *)
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   663
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   664
local
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   665
56245
84fc7dfa3cd4 more qualified names;
wenzelm
parents: 56231
diff changeset
   666
fun goal_prefix k ((c as Const (@{const_name Pure.all}, _)) $ Abs (a, T, B)) =
84fc7dfa3cd4 more qualified names;
wenzelm
parents: 56231
diff changeset
   667
      c $ Abs (a, T, goal_prefix k B)
45156
a9b6c2ea7bec added Term.dummy_pattern conveniences;
wenzelm
parents: 45132
diff changeset
   668
  | goal_prefix 0 _ = Term.dummy_prop
56245
84fc7dfa3cd4 more qualified names;
wenzelm
parents: 56231
diff changeset
   669
  | goal_prefix k ((c as Const (@{const_name Pure.imp}, _)) $ A $ B) =
84fc7dfa3cd4 more qualified names;
wenzelm
parents: 56231
diff changeset
   670
      c $ A $ goal_prefix (k - 1) B
45156
a9b6c2ea7bec added Term.dummy_pattern conveniences;
wenzelm
parents: 45132
diff changeset
   671
  | goal_prefix _ _ = Term.dummy_prop;
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   672
56245
84fc7dfa3cd4 more qualified names;
wenzelm
parents: 56231
diff changeset
   673
fun goal_params k (Const (@{const_name Pure.all}, _) $ Abs (_, _, B)) = goal_params k B + 1
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   674
  | goal_params 0 _ = 0
56245
84fc7dfa3cd4 more qualified names;
wenzelm
parents: 56231
diff changeset
   675
  | goal_params k (Const (@{const_name Pure.imp}, _) $ _ $ B) = goal_params (k - 1) B
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   676
  | goal_params _ _ = 0;
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   677
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   678
fun meta_spec_tac ctxt n (x, T) = SUBGOAL (fn (goal, i) =>
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   679
  let
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   680
    val v = Free (x, T);
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   681
    fun spec_rule prfx (xs, body) =
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   682
      @{thm Pure.meta_spec}
42488
4638622bcaa1 reorganized fixes as specialized (global) name space;
wenzelm
parents: 42361
diff changeset
   683
      |> Thm.rename_params_rule ([Name.clean (Variable.revert_fixed ctxt x)], 1)
59843
wenzelm
parents: 59621
diff changeset
   684
      |> Thm.lift_rule (Thm.cterm_of ctxt prfx)
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   685
      |> `(Thm.prop_of #> Logic.strip_assums_concl)
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   686
      |-> (fn pred $ arg =>
60784
4f590c08fd5d updated to infer_instantiate;
wenzelm
parents: 60642
diff changeset
   687
        infer_instantiate ctxt
4f590c08fd5d updated to infer_instantiate;
wenzelm
parents: 60642
diff changeset
   688
          [(#1 (dest_Var (head_of pred)), Thm.cterm_of ctxt (Logic.rlist_abs (xs, body))),
4f590c08fd5d updated to infer_instantiate;
wenzelm
parents: 60642
diff changeset
   689
           (#1 (dest_Var (head_of arg)), Thm.cterm_of ctxt (Logic.rlist_abs (xs, v)))]);
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   690
56245
84fc7dfa3cd4 more qualified names;
wenzelm
parents: 56231
diff changeset
   691
    fun goal_concl k xs (Const (@{const_name Pure.all}, _) $ Abs (a, T, B)) =
84fc7dfa3cd4 more qualified names;
wenzelm
parents: 56231
diff changeset
   692
          goal_concl k ((a, T) :: xs) B
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   693
      | goal_concl 0 xs B =
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   694
          if not (Term.exists_subterm (fn t => t aconv v) B) then NONE
44241
7943b69f0188 modernized signature of Term.absfree/absdummy;
wenzelm
parents: 43333
diff changeset
   695
          else SOME (xs, absfree (x, T) (Term.incr_boundvars 1 B))
56245
84fc7dfa3cd4 more qualified names;
wenzelm
parents: 56231
diff changeset
   696
      | goal_concl k xs (Const (@{const_name Pure.imp}, _) $ _ $ B) =
84fc7dfa3cd4 more qualified names;
wenzelm
parents: 56231
diff changeset
   697
          goal_concl (k - 1) xs B
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   698
      | goal_concl _ _ _ = NONE;
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   699
  in
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   700
    (case goal_concl n [] goal of
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   701
      SOME concl =>
58956
a816aa3ff391 proper context for compose_tac, Splitter.split_tac (relevant for unify trace options);
wenzelm
parents: 58950
diff changeset
   702
        (compose_tac ctxt (false, spec_rule (goal_prefix n goal) concl, 1) THEN'
59498
50b60f501b05 proper context for resolve_tac, eresolve_tac, dresolve_tac, forward_tac etc.;
wenzelm
parents: 59058
diff changeset
   703
          resolve_tac ctxt [asm_rl]) i
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   704
    | NONE => all_tac)
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   705
  end);
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   706
54742
7a86358a3c0b proper context for basic Simplifier operations: rewrite_rule, rewrite_goals_rule, rewrite_goals_tac etc.;
wenzelm
parents: 53168
diff changeset
   707
fun miniscope_tac p =
7a86358a3c0b proper context for basic Simplifier operations: rewrite_rule, rewrite_goals_rule, rewrite_goals_tac etc.;
wenzelm
parents: 53168
diff changeset
   708
  CONVERSION o
7a86358a3c0b proper context for basic Simplifier operations: rewrite_rule, rewrite_goals_rule, rewrite_goals_tac etc.;
wenzelm
parents: 53168
diff changeset
   709
    Conv.params_conv p (fn ctxt =>
7a86358a3c0b proper context for basic Simplifier operations: rewrite_rule, rewrite_goals_rule, rewrite_goals_tac etc.;
wenzelm
parents: 53168
diff changeset
   710
      Raw_Simplifier.rewrite ctxt true [Thm.symmetric Drule.norm_hhf_eq]);
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   711
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   712
in
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   713
45132
09de0d0de645 tuned signature;
wenzelm
parents: 45131
diff changeset
   714
fun arbitrary_tac _ _ [] = K all_tac
09de0d0de645 tuned signature;
wenzelm
parents: 45131
diff changeset
   715
  | arbitrary_tac ctxt n xs = SUBGOAL (fn (goal, i) =>
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   716
     (EVERY' (map (meta_spec_tac ctxt n) xs) THEN'
24832
64cd13299d39 Conv.forall_conv: proper context;
wenzelm
parents: 24830
diff changeset
   717
      (miniscope_tac (goal_params n goal) ctxt)) i);
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   718
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   719
end;
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   720
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   721
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   722
(* add_defs *)
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   723
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   724
fun add_defs def_insts =
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   725
  let
34907
b0aaec87751c Added infrastructure for simplifying equality constraints.
berghofe
parents: 33957
diff changeset
   726
    fun add (SOME (_, (t, true))) ctxt = ((SOME t, []), ctxt)
b0aaec87751c Added infrastructure for simplifying equality constraints.
berghofe
parents: 33957
diff changeset
   727
      | add (SOME (SOME x, (t, _))) ctxt =
28083
103d9282a946 explicit type Name.binding for higher-specification elements;
wenzelm
parents: 27865
diff changeset
   728
          let val ([(lhs, (_, th))], ctxt') =
49748
a346daa8a1f4 clarified Local_Defs.add_def(s): refrain from hard-wiring Thm.def_binding_optional;
wenzelm
parents: 49660
diff changeset
   729
            Local_Defs.add_defs [((x, NoSyn), ((Thm.def_binding x, []), t))] ctxt
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   730
          in ((SOME lhs, [th]), ctxt') end
34907
b0aaec87751c Added infrastructure for simplifying equality constraints.
berghofe
parents: 33957
diff changeset
   731
      | add (SOME (NONE, (t as Free _, _))) ctxt = ((SOME t, []), ctxt)
b0aaec87751c Added infrastructure for simplifying equality constraints.
berghofe
parents: 33957
diff changeset
   732
      | add (SOME (NONE, (t, _))) ctxt =
b0aaec87751c Added infrastructure for simplifying equality constraints.
berghofe
parents: 33957
diff changeset
   733
          let
43326
47cf4bc789aa simplified Name.variant -- discontinued builtin fold_map;
wenzelm
parents: 43278
diff changeset
   734
            val (s, _) = Name.variant "x" (Variable.names_of ctxt);
49748
a346daa8a1f4 clarified Local_Defs.add_def(s): refrain from hard-wiring Thm.def_binding_optional;
wenzelm
parents: 49660
diff changeset
   735
            val x = Binding.name s;
a346daa8a1f4 clarified Local_Defs.add_def(s): refrain from hard-wiring Thm.def_binding_optional;
wenzelm
parents: 49660
diff changeset
   736
            val ([(lhs, (_, th))], ctxt') = ctxt
a346daa8a1f4 clarified Local_Defs.add_def(s): refrain from hard-wiring Thm.def_binding_optional;
wenzelm
parents: 49660
diff changeset
   737
              |> Local_Defs.add_defs [((x, NoSyn), ((Thm.def_binding x, []), t))];
34907
b0aaec87751c Added infrastructure for simplifying equality constraints.
berghofe
parents: 33957
diff changeset
   738
          in ((SOME lhs, [th]), ctxt') end
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   739
      | add NONE ctxt = ((NONE, []), ctxt);
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   740
  in fold_map add def_insts #> apfst (split_list #> apsnd flat) end;
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   741
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   742
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   743
(* induct_tac *)
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   744
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   745
(*
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   746
  rule selection scheme:
24861
cc669ca5f382 tuned Induct interface: prefer pred'' over set'';
wenzelm
parents: 24832
diff changeset
   747
    `A x` induct ...     - predicate/set induction
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   748
          induct x       - type induction
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   749
    ...   induct ... r   - explicit rule
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   750
*)
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   751
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   752
fun get_inductT ctxt insts =
32188
005f9abae1e3 eliminated redundant Library.multiply;
wenzelm
parents: 32171
diff changeset
   753
  fold_rev (map_product cons) (insts |> map
27323
385c0ce33173 tuned get_inductT: *all* rules for missing instantiation;
wenzelm
parents: 27140
diff changeset
   754
      ((fn [] => NONE | ts => List.last ts) #>
385c0ce33173 tuned get_inductT: *all* rules for missing instantiation;
wenzelm
parents: 27140
diff changeset
   755
        (fn NONE => TVar (("'a", 0), []) | SOME t => Term.fastype_of t) #>
385c0ce33173 tuned get_inductT: *all* rules for missing instantiation;
wenzelm
parents: 27140
diff changeset
   756
        find_inductT ctxt)) [[]]
33368
b1cf34f1855c modernized structure Rule_Cases;
wenzelm
parents: 33303
diff changeset
   757
  |> filter_out (forall Rule_Cases.is_inner_rule);
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   758
24861
cc669ca5f382 tuned Induct interface: prefer pred'' over set'';
wenzelm
parents: 24832
diff changeset
   759
fun get_inductP ctxt (fact :: _) = map single (find_inductP ctxt (Thm.concl_of fact))
cc669ca5f382 tuned Induct interface: prefer pred'' over set'';
wenzelm
parents: 24832
diff changeset
   760
  | get_inductP _ _ = [];
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   761
61844
007d3b34080f tuned signature;
wenzelm
parents: 61841
diff changeset
   762
fun gen_induct_context_tactic mod_cases simp def_insts arbitrary taking opt_rule facts =
61841
4d3527b94f2a more general types Proof.method / context_tactic;
wenzelm
parents: 61268
diff changeset
   763
  CONTEXT_SUBGOAL (fn (_, i) => fn (ctxt, st) =>
56231
b98813774a63 enforce subgoal boundaries via SUBGOAL/SUBGOAL_CASES -- clean tactical failure if out-of-range;
wenzelm
parents: 55954
diff changeset
   764
    let
b98813774a63 enforce subgoal boundaries via SUBGOAL/SUBGOAL_CASES -- clean tactical failure if out-of-range;
wenzelm
parents: 55954
diff changeset
   765
      val ((insts, defs), defs_ctxt) = fold_map add_defs def_insts ctxt |>> split_list;
b98813774a63 enforce subgoal boundaries via SUBGOAL/SUBGOAL_CASES -- clean tactical failure if out-of-range;
wenzelm
parents: 55954
diff changeset
   766
      val atomized_defs = map (map (Conv.fconv_rule (atomize_cterm defs_ctxt))) defs;
59940
087d81f5213e local setup of induction tools, with restricted access to auxiliary consts;
wenzelm
parents: 59936
diff changeset
   767
56231
b98813774a63 enforce subgoal boundaries via SUBGOAL/SUBGOAL_CASES -- clean tactical failure if out-of-range;
wenzelm
parents: 55954
diff changeset
   768
      fun inst_rule (concls, r) =
b98813774a63 enforce subgoal boundaries via SUBGOAL/SUBGOAL_CASES -- clean tactical failure if out-of-range;
wenzelm
parents: 55954
diff changeset
   769
        (if null insts then `Rule_Cases.get r
b98813774a63 enforce subgoal boundaries via SUBGOAL/SUBGOAL_CASES -- clean tactical failure if out-of-range;
wenzelm
parents: 55954
diff changeset
   770
         else (align_left "Rule has fewer conclusions than arguments given"
b98813774a63 enforce subgoal boundaries via SUBGOAL/SUBGOAL_CASES -- clean tactical failure if out-of-range;
wenzelm
parents: 55954
diff changeset
   771
            (map Logic.strip_imp_concl (Logic.dest_conjunctions (Thm.concl_of r))) insts
59970
e9f73d87d904 proper context for Object_Logic operations;
wenzelm
parents: 59940
diff changeset
   772
          |> maps (prep_inst ctxt align_right (atomize_term ctxt))
60784
4f590c08fd5d updated to infer_instantiate;
wenzelm
parents: 60642
diff changeset
   773
          |> infer_instantiate ctxt) r |> pair (Rule_Cases.get r))
59970
e9f73d87d904 proper context for Object_Logic operations;
wenzelm
parents: 59940
diff changeset
   774
        |> mod_cases
56231
b98813774a63 enforce subgoal boundaries via SUBGOAL/SUBGOAL_CASES -- clean tactical failure if out-of-range;
wenzelm
parents: 55954
diff changeset
   775
        |> (fn ((cases, consumes), th) => (((cases, concls), consumes), th));
59940
087d81f5213e local setup of induction tools, with restricted access to auxiliary consts;
wenzelm
parents: 59936
diff changeset
   776
56231
b98813774a63 enforce subgoal boundaries via SUBGOAL/SUBGOAL_CASES -- clean tactical failure if out-of-range;
wenzelm
parents: 55954
diff changeset
   777
      val ruleq =
b98813774a63 enforce subgoal boundaries via SUBGOAL/SUBGOAL_CASES -- clean tactical failure if out-of-range;
wenzelm
parents: 55954
diff changeset
   778
        (case opt_rule of
b98813774a63 enforce subgoal boundaries via SUBGOAL/SUBGOAL_CASES -- clean tactical failure if out-of-range;
wenzelm
parents: 55954
diff changeset
   779
          SOME rs => Seq.single (inst_rule (Rule_Cases.strict_mutual_rule ctxt rs))
b98813774a63 enforce subgoal boundaries via SUBGOAL/SUBGOAL_CASES -- clean tactical failure if out-of-range;
wenzelm
parents: 55954
diff changeset
   780
        | NONE =>
b98813774a63 enforce subgoal boundaries via SUBGOAL/SUBGOAL_CASES -- clean tactical failure if out-of-range;
wenzelm
parents: 55954
diff changeset
   781
            (get_inductP ctxt facts @
b98813774a63 enforce subgoal boundaries via SUBGOAL/SUBGOAL_CASES -- clean tactical failure if out-of-range;
wenzelm
parents: 55954
diff changeset
   782
              map (special_rename_params defs_ctxt insts) (get_inductT ctxt insts))
b98813774a63 enforce subgoal boundaries via SUBGOAL/SUBGOAL_CASES -- clean tactical failure if out-of-range;
wenzelm
parents: 55954
diff changeset
   783
            |> map_filter (Rule_Cases.mutual_rule ctxt)
b98813774a63 enforce subgoal boundaries via SUBGOAL/SUBGOAL_CASES -- clean tactical failure if out-of-range;
wenzelm
parents: 55954
diff changeset
   784
            |> tap (trace_rules ctxt inductN o map #2)
b98813774a63 enforce subgoal boundaries via SUBGOAL/SUBGOAL_CASES -- clean tactical failure if out-of-range;
wenzelm
parents: 55954
diff changeset
   785
            |> Seq.of_list |> Seq.maps (Seq.try inst_rule));
59940
087d81f5213e local setup of induction tools, with restricted access to auxiliary consts;
wenzelm
parents: 59936
diff changeset
   786
56231
b98813774a63 enforce subgoal boundaries via SUBGOAL/SUBGOAL_CASES -- clean tactical failure if out-of-range;
wenzelm
parents: 55954
diff changeset
   787
      fun rule_cases ctxt rule cases =
b98813774a63 enforce subgoal boundaries via SUBGOAL/SUBGOAL_CASES -- clean tactical failure if out-of-range;
wenzelm
parents: 55954
diff changeset
   788
        let
b98813774a63 enforce subgoal boundaries via SUBGOAL/SUBGOAL_CASES -- clean tactical failure if out-of-range;
wenzelm
parents: 55954
diff changeset
   789
          val rule' = Rule_Cases.internalize_params rule;
b98813774a63 enforce subgoal boundaries via SUBGOAL/SUBGOAL_CASES -- clean tactical failure if out-of-range;
wenzelm
parents: 55954
diff changeset
   790
          val rule'' = rule' |> simp ? simplified_rule ctxt;
b98813774a63 enforce subgoal boundaries via SUBGOAL/SUBGOAL_CASES -- clean tactical failure if out-of-range;
wenzelm
parents: 55954
diff changeset
   791
          val nonames = map (fn ((cn, _), cls) => ((cn, []), cls));
b98813774a63 enforce subgoal boundaries via SUBGOAL/SUBGOAL_CASES -- clean tactical failure if out-of-range;
wenzelm
parents: 55954
diff changeset
   792
          val cases' = if Thm.eq_thm_prop (rule', rule'') then cases else nonames cases;
59970
e9f73d87d904 proper context for Object_Logic operations;
wenzelm
parents: 59940
diff changeset
   793
        in Rule_Cases.make_nested ctxt (Thm.prop_of rule'') (rulified_term ctxt rule'') cases' end;
61841
4d3527b94f2a more general types Proof.method / context_tactic;
wenzelm
parents: 61268
diff changeset
   794
4d3527b94f2a more general types Proof.method / context_tactic;
wenzelm
parents: 61268
diff changeset
   795
      fun context_tac _ _ =
56231
b98813774a63 enforce subgoal boundaries via SUBGOAL/SUBGOAL_CASES -- clean tactical failure if out-of-range;
wenzelm
parents: 55954
diff changeset
   796
        ruleq
b98813774a63 enforce subgoal boundaries via SUBGOAL/SUBGOAL_CASES -- clean tactical failure if out-of-range;
wenzelm
parents: 55954
diff changeset
   797
        |> Seq.maps (Rule_Cases.consume defs_ctxt (flat defs) facts)
b98813774a63 enforce subgoal boundaries via SUBGOAL/SUBGOAL_CASES -- clean tactical failure if out-of-range;
wenzelm
parents: 55954
diff changeset
   798
        |> Seq.maps (fn (((cases, concls), (more_consumes, more_facts)), rule) =>
b98813774a63 enforce subgoal boundaries via SUBGOAL/SUBGOAL_CASES -- clean tactical failure if out-of-range;
wenzelm
parents: 55954
diff changeset
   799
          (PRECISE_CONJUNCTS (length concls) (ALLGOALS (fn j =>
b98813774a63 enforce subgoal boundaries via SUBGOAL/SUBGOAL_CASES -- clean tactical failure if out-of-range;
wenzelm
parents: 55954
diff changeset
   800
            (CONJUNCTS (ALLGOALS
b98813774a63 enforce subgoal boundaries via SUBGOAL/SUBGOAL_CASES -- clean tactical failure if out-of-range;
wenzelm
parents: 55954
diff changeset
   801
              let
b98813774a63 enforce subgoal boundaries via SUBGOAL/SUBGOAL_CASES -- clean tactical failure if out-of-range;
wenzelm
parents: 55954
diff changeset
   802
                val adefs = nth_list atomized_defs (j - 1);
b98813774a63 enforce subgoal boundaries via SUBGOAL/SUBGOAL_CASES -- clean tactical failure if out-of-range;
wenzelm
parents: 55954
diff changeset
   803
                val frees = fold (Term.add_frees o Thm.prop_of) adefs [];
b98813774a63 enforce subgoal boundaries via SUBGOAL/SUBGOAL_CASES -- clean tactical failure if out-of-range;
wenzelm
parents: 55954
diff changeset
   804
                val xs = nth_list arbitrary (j - 1);
60575
wenzelm
parents: 60455
diff changeset
   805
                val k = nth concls (j - 1) + more_consumes;
56231
b98813774a63 enforce subgoal boundaries via SUBGOAL/SUBGOAL_CASES -- clean tactical failure if out-of-range;
wenzelm
parents: 55954
diff changeset
   806
              in
61841
4d3527b94f2a more general types Proof.method / context_tactic;
wenzelm
parents: 61268
diff changeset
   807
                Method.insert_tac defs_ctxt (more_facts @ adefs) THEN'
56231
b98813774a63 enforce subgoal boundaries via SUBGOAL/SUBGOAL_CASES -- clean tactical failure if out-of-range;
wenzelm
parents: 55954
diff changeset
   808
                  (if simp then
b98813774a63 enforce subgoal boundaries via SUBGOAL/SUBGOAL_CASES -- clean tactical failure if out-of-range;
wenzelm
parents: 55954
diff changeset
   809
                     rotate_tac k (length adefs) THEN'
b98813774a63 enforce subgoal boundaries via SUBGOAL/SUBGOAL_CASES -- clean tactical failure if out-of-range;
wenzelm
parents: 55954
diff changeset
   810
                     arbitrary_tac defs_ctxt k (List.partition (member op = frees) xs |> op @)
b98813774a63 enforce subgoal boundaries via SUBGOAL/SUBGOAL_CASES -- clean tactical failure if out-of-range;
wenzelm
parents: 55954
diff changeset
   811
                   else
b98813774a63 enforce subgoal boundaries via SUBGOAL/SUBGOAL_CASES -- clean tactical failure if out-of-range;
wenzelm
parents: 55954
diff changeset
   812
                     arbitrary_tac defs_ctxt k xs)
b98813774a63 enforce subgoal boundaries via SUBGOAL/SUBGOAL_CASES -- clean tactical failure if out-of-range;
wenzelm
parents: 55954
diff changeset
   813
               end)
b98813774a63 enforce subgoal boundaries via SUBGOAL/SUBGOAL_CASES -- clean tactical failure if out-of-range;
wenzelm
parents: 55954
diff changeset
   814
            THEN' inner_atomize_tac defs_ctxt) j))
61841
4d3527b94f2a more general types Proof.method / context_tactic;
wenzelm
parents: 61268
diff changeset
   815
          THEN' atomize_tac defs_ctxt) i st
4d3527b94f2a more general types Proof.method / context_tactic;
wenzelm
parents: 61268
diff changeset
   816
        |> Seq.maps (fn st' =>
56231
b98813774a63 enforce subgoal boundaries via SUBGOAL/SUBGOAL_CASES -- clean tactical failure if out-of-range;
wenzelm
parents: 55954
diff changeset
   817
              guess_instance ctxt (internalize ctxt more_consumes rule) i st'
b98813774a63 enforce subgoal boundaries via SUBGOAL/SUBGOAL_CASES -- clean tactical failure if out-of-range;
wenzelm
parents: 55954
diff changeset
   818
              |> Seq.map (rule_instance ctxt (burrow_options (Variable.polymorphic ctxt) taking))
b98813774a63 enforce subgoal boundaries via SUBGOAL/SUBGOAL_CASES -- clean tactical failure if out-of-range;
wenzelm
parents: 55954
diff changeset
   819
              |> Seq.maps (fn rule' =>
61841
4d3527b94f2a more general types Proof.method / context_tactic;
wenzelm
parents: 61268
diff changeset
   820
                CONTEXT_CASES (rule_cases ctxt rule' cases)
59498
50b60f501b05 proper context for resolve_tac, eresolve_tac, dresolve_tac, forward_tac etc.;
wenzelm
parents: 59058
diff changeset
   821
                  (resolve_tac ctxt [rule'] i THEN
61841
4d3527b94f2a more general types Proof.method / context_tactic;
wenzelm
parents: 61268
diff changeset
   822
                    PRIMITIVE (singleton (Proof_Context.export defs_ctxt ctxt))) (ctxt, st'))));
4d3527b94f2a more general types Proof.method / context_tactic;
wenzelm
parents: 61268
diff changeset
   823
    in
4d3527b94f2a more general types Proof.method / context_tactic;
wenzelm
parents: 61268
diff changeset
   824
      (context_tac CONTEXT_THEN_ALL_NEW
58957
c9e744ea8a38 proper context for match_tac etc.;
wenzelm
parents: 58956
diff changeset
   825
        ((if simp then simplify_tac ctxt THEN' (TRY o trivial_tac ctxt) else K all_tac)
61841
4d3527b94f2a more general types Proof.method / context_tactic;
wenzelm
parents: 61268
diff changeset
   826
         THEN_ALL_NEW rulify_tac ctxt)) i (ctxt, st)
4d3527b94f2a more general types Proof.method / context_tactic;
wenzelm
parents: 61268
diff changeset
   827
    end)
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   828
61844
007d3b34080f tuned signature;
wenzelm
parents: 61841
diff changeset
   829
val induct_context_tactic = gen_induct_context_tactic I;
007d3b34080f tuned signature;
wenzelm
parents: 61841
diff changeset
   830
007d3b34080f tuned signature;
wenzelm
parents: 61841
diff changeset
   831
fun gen_induct_tac ctxt x1 x2 x3 x4 x5 x6 x7 x8 =
007d3b34080f tuned signature;
wenzelm
parents: 61841
diff changeset
   832
  Method.NO_CONTEXT_TACTIC ctxt (gen_induct_context_tactic x1 x2 x3 x4 x5 x6 x7 x8);
007d3b34080f tuned signature;
wenzelm
parents: 61841
diff changeset
   833
007d3b34080f tuned signature;
wenzelm
parents: 61841
diff changeset
   834
fun induct_tac ctxt x1 x2 x3 x4 x5 x6 x7 =
007d3b34080f tuned signature;
wenzelm
parents: 61841
diff changeset
   835
  Method.NO_CONTEXT_TACTIC ctxt (induct_context_tactic x1 x2 x3 x4 x5 x6 x7);
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   836
45130
563caf031b50 tuned ML style;
wenzelm
parents: 45014
diff changeset
   837
563caf031b50 tuned ML style;
wenzelm
parents: 45014
diff changeset
   838
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   839
(** coinduct method **)
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   840
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   841
(*
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   842
  rule selection scheme:
24861
cc669ca5f382 tuned Induct interface: prefer pred'' over set'';
wenzelm
parents: 24832
diff changeset
   843
    goal "A x" coinduct ...   - predicate/set coinduction
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   844
               coinduct x     - type coinduction
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   845
               coinduct ... r - explicit rule
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   846
*)
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   847
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   848
local
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   849
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   850
fun get_coinductT ctxt (SOME t :: _) = find_coinductT ctxt (Term.fastype_of t)
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   851
  | get_coinductT _ _ = [];
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   852
24861
cc669ca5f382 tuned Induct interface: prefer pred'' over set'';
wenzelm
parents: 24832
diff changeset
   853
fun get_coinductP ctxt goal = find_coinductP ctxt (Logic.strip_assums_concl goal);
cc669ca5f382 tuned Induct interface: prefer pred'' over set'';
wenzelm
parents: 24832
diff changeset
   854
cc669ca5f382 tuned Induct interface: prefer pred'' over set'';
wenzelm
parents: 24832
diff changeset
   855
fun main_prop_of th =
33368
b1cf34f1855c modernized structure Rule_Cases;
wenzelm
parents: 33303
diff changeset
   856
  if Rule_Cases.get_consumes th > 0 then Thm.major_prem_of th else Thm.concl_of th;
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   857
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   858
in
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   859
61844
007d3b34080f tuned signature;
wenzelm
parents: 61841
diff changeset
   860
fun coinduct_context_tactic inst taking opt_rule facts =
61841
4d3527b94f2a more general types Proof.method / context_tactic;
wenzelm
parents: 61268
diff changeset
   861
  CONTEXT_SUBGOAL (fn (goal, i) => fn (ctxt, st) =>
4d3527b94f2a more general types Proof.method / context_tactic;
wenzelm
parents: 61268
diff changeset
   862
    let
4d3527b94f2a more general types Proof.method / context_tactic;
wenzelm
parents: 61268
diff changeset
   863
      fun inst_rule r =
4d3527b94f2a more general types Proof.method / context_tactic;
wenzelm
parents: 61268
diff changeset
   864
        if null inst then `Rule_Cases.get r
4d3527b94f2a more general types Proof.method / context_tactic;
wenzelm
parents: 61268
diff changeset
   865
        else
4d3527b94f2a more general types Proof.method / context_tactic;
wenzelm
parents: 61268
diff changeset
   866
          infer_instantiate ctxt (prep_inst ctxt align_right I (main_prop_of r, inst)) r
4d3527b94f2a more general types Proof.method / context_tactic;
wenzelm
parents: 61268
diff changeset
   867
          |> pair (Rule_Cases.get r);
4d3527b94f2a more general types Proof.method / context_tactic;
wenzelm
parents: 61268
diff changeset
   868
    in
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   869
      (case opt_rule of
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   870
        SOME r => Seq.single (inst_rule r)
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   871
      | NONE =>
24861
cc669ca5f382 tuned Induct interface: prefer pred'' over set'';
wenzelm
parents: 24832
diff changeset
   872
          (get_coinductP ctxt goal @ get_coinductT ctxt inst)
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   873
          |> tap (trace_rules ctxt coinductN)
59972
wenzelm
parents: 59971
diff changeset
   874
          |> Seq.of_list |> Seq.maps (Seq.try inst_rule))
54742
7a86358a3c0b proper context for basic Simplifier operations: rewrite_rule, rewrite_goals_rule, rewrite_goals_tac etc.;
wenzelm
parents: 53168
diff changeset
   875
      |> Seq.maps (Rule_Cases.consume ctxt [] facts)
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   876
      |> Seq.maps (fn ((cases, (_, more_facts)), rule) =>
26940
80df961f7900 guess_instance: proper context;
wenzelm
parents: 26924
diff changeset
   877
        guess_instance ctxt rule i st
32432
64f30bdd3ba1 modernized messages -- eliminated ctyp/cterm operations;
wenzelm
parents: 32188
diff changeset
   878
        |> Seq.map (rule_instance ctxt (burrow_options (Variable.polymorphic ctxt) taking))
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   879
        |> Seq.maps (fn rule' =>
61841
4d3527b94f2a more general types Proof.method / context_tactic;
wenzelm
parents: 61268
diff changeset
   880
          CONTEXT_CASES (Rule_Cases.make_common ctxt
59970
e9f73d87d904 proper context for Object_Logic operations;
wenzelm
parents: 59940
diff changeset
   881
              (Thm.prop_of (Rule_Cases.internalize_params rule')) cases)
61841
4d3527b94f2a more general types Proof.method / context_tactic;
wenzelm
parents: 61268
diff changeset
   882
            (Method.insert_tac ctxt more_facts i THEN resolve_tac ctxt [rule'] i) (ctxt, st)))
4d3527b94f2a more general types Proof.method / context_tactic;
wenzelm
parents: 61268
diff changeset
   883
    end);
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   884
61844
007d3b34080f tuned signature;
wenzelm
parents: 61841
diff changeset
   885
fun coinduct_tac ctxt x1 x2 x3 x4 x5 =
007d3b34080f tuned signature;
wenzelm
parents: 61841
diff changeset
   886
  Method.NO_CONTEXT_TACTIC ctxt (coinduct_context_tactic x1 x2 x3 x4 x5);
007d3b34080f tuned signature;
wenzelm
parents: 61841
diff changeset
   887
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   888
end;
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   889
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   890
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   891
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   892
(** concrete syntax **)
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   893
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   894
val arbitraryN = "arbitrary";
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   895
val takingN = "taking";
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   896
val ruleN = "rule";
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   897
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   898
local
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   899
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   900
fun single_rule [rule] = rule
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   901
  | single_rule _ = error "Single rule expected";
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   902
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   903
fun named_rule k arg get =
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   904
  Scan.lift (Args.$$$ k -- Args.colon) |-- Scan.repeat arg :|--
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   905
    (fn names => Scan.peek (fn context => Scan.succeed (names |> map (fn name =>
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   906
      (case get (Context.proof_of context) name of SOME x => x
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   907
      | NONE => error ("No rule for " ^ k ^ " " ^ quote name))))));
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   908
24861
cc669ca5f382 tuned Induct interface: prefer pred'' over set'';
wenzelm
parents: 24832
diff changeset
   909
fun rule get_type get_pred =
55951
c07d184aebe9 tuned signature -- more uniform check_type_name/read_type_name;
wenzelm
parents: 54742
diff changeset
   910
  named_rule typeN (Args.type_name {proper = false, strict = false}) get_type ||
55954
a29aefc88c8d more uniform check_const/read_const;
wenzelm
parents: 55951
diff changeset
   911
  named_rule predN (Args.const {proper = false, strict = false}) get_pred ||
a29aefc88c8d more uniform check_const/read_const;
wenzelm
parents: 55951
diff changeset
   912
  named_rule setN (Args.const {proper = false, strict = false}) get_pred ||
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   913
  Scan.lift (Args.$$$ ruleN -- Args.colon) |-- Attrib.thms;
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   914
24861
cc669ca5f382 tuned Induct interface: prefer pred'' over set'';
wenzelm
parents: 24832
diff changeset
   915
val cases_rule = rule lookup_casesT lookup_casesP >> single_rule;
cc669ca5f382 tuned Induct interface: prefer pred'' over set'';
wenzelm
parents: 24832
diff changeset
   916
val induct_rule = rule lookup_inductT lookup_inductP;
cc669ca5f382 tuned Induct interface: prefer pred'' over set'';
wenzelm
parents: 24832
diff changeset
   917
val coinduct_rule = rule lookup_coinductT lookup_coinductP >> single_rule;
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   918
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   919
val inst = Scan.lift (Args.$$$ "_") >> K NONE || Args.term >> SOME;
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   920
34907
b0aaec87751c Added infrastructure for simplifying equality constraints.
berghofe
parents: 33957
diff changeset
   921
val inst' = Scan.lift (Args.$$$ "_") >> K NONE ||
b0aaec87751c Added infrastructure for simplifying equality constraints.
berghofe
parents: 33957
diff changeset
   922
  Args.term >> (SOME o rpair false) ||
b0aaec87751c Added infrastructure for simplifying equality constraints.
berghofe
parents: 33957
diff changeset
   923
  Scan.lift (Args.$$$ "(") |-- (Args.term >> (SOME o rpair true)) --|
b0aaec87751c Added infrastructure for simplifying equality constraints.
berghofe
parents: 33957
diff changeset
   924
    Scan.lift (Args.$$$ ")");
b0aaec87751c Added infrastructure for simplifying equality constraints.
berghofe
parents: 33957
diff changeset
   925
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   926
val def_inst =
28083
103d9282a946 explicit type Name.binding for higher-specification elements;
wenzelm
parents: 27865
diff changeset
   927
  ((Scan.lift (Args.binding --| (Args.$$$ "\<equiv>" || Args.$$$ "==")) >> SOME)
34907
b0aaec87751c Added infrastructure for simplifying equality constraints.
berghofe
parents: 33957
diff changeset
   928
      -- (Args.term >> rpair false)) >> SOME ||
b0aaec87751c Added infrastructure for simplifying equality constraints.
berghofe
parents: 33957
diff changeset
   929
    inst' >> Option.map (pair NONE);
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   930
27370
8e8f96dfaf63 Args.context;
wenzelm
parents: 27323
diff changeset
   931
val free = Args.context -- Args.term >> (fn (_, Free v) => v | (ctxt, t) =>
8e8f96dfaf63 Args.context;
wenzelm
parents: 27323
diff changeset
   932
  error ("Bad free variable: " ^ Syntax.string_of_term ctxt t));
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   933
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   934
fun unless_more_args scan = Scan.unless (Scan.lift
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   935
  ((Args.$$$ arbitraryN || Args.$$$ takingN || Args.$$$ typeN ||
24861
cc669ca5f382 tuned Induct interface: prefer pred'' over set'';
wenzelm
parents: 24832
diff changeset
   936
    Args.$$$ predN || Args.$$$ setN || Args.$$$ ruleN) -- Args.colon)) scan;
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   937
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   938
val arbitrary = Scan.optional (Scan.lift (Args.$$$ arbitraryN -- Args.colon) |--
36960
01594f816e3a prefer structure Keyword, Parse, Parse_Spec, Outer_Syntax;
wenzelm
parents: 36602
diff changeset
   939
  Parse.and_list1' (Scan.repeat (unless_more_args free))) [];
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   940
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   941
val taking = Scan.optional (Scan.lift (Args.$$$ takingN -- Args.colon) |--
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   942
  Scan.repeat1 (unless_more_args inst)) [];
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   943
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   944
in
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   945
58002
0ed1e999a0fb simplified type Proof.method;
wenzelm
parents: 56334
diff changeset
   946
fun gen_induct_setup binding tac =
59940
087d81f5213e local setup of induction tools, with restricted access to auxiliary consts;
wenzelm
parents: 59936
diff changeset
   947
  Method.local_setup binding
53168
d998de7f0efc tuned signature;
wenzelm
parents: 52732
diff changeset
   948
    (Scan.lift (Args.mode no_simpN) --
d998de7f0efc tuned signature;
wenzelm
parents: 52732
diff changeset
   949
      (Parse.and_list' (Scan.repeat (unless_more_args def_inst)) --
d998de7f0efc tuned signature;
wenzelm
parents: 52732
diff changeset
   950
        (arbitrary -- taking -- Scan.option induct_rule)) >>
61841
4d3527b94f2a more general types Proof.method / context_tactic;
wenzelm
parents: 61268
diff changeset
   951
      (fn (no_simp, (insts, ((arbitrary, taking), opt_rule))) => fn _ => fn facts =>
4d3527b94f2a more general types Proof.method / context_tactic;
wenzelm
parents: 61268
diff changeset
   952
        Seq.DETERM (tac (not no_simp) insts arbitrary taking opt_rule facts 1)))
30722
623d4831c8cf simplified attribute and method setup: eliminating bottom-up styles makes it easier to keep things in one place, and also SML/NJ happy;
wenzelm
parents: 30560
diff changeset
   953
    "induction on types or predicates/sets";
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   954
58826
2ed2eaabe3df modernized setup;
wenzelm
parents: 58002
diff changeset
   955
val _ =
59940
087d81f5213e local setup of induction tools, with restricted access to auxiliary consts;
wenzelm
parents: 59936
diff changeset
   956
  Theory.local_setup
087d81f5213e local setup of induction tools, with restricted access to auxiliary consts;
wenzelm
parents: 59936
diff changeset
   957
    (Method.local_setup @{binding cases}
087d81f5213e local setup of induction tools, with restricted access to auxiliary consts;
wenzelm
parents: 59936
diff changeset
   958
      (Scan.lift (Args.mode no_simpN) --
087d81f5213e local setup of induction tools, with restricted access to auxiliary consts;
wenzelm
parents: 59936
diff changeset
   959
        (Parse.and_list' (Scan.repeat (unless_more_args inst)) -- Scan.option cases_rule) >>
61841
4d3527b94f2a more general types Proof.method / context_tactic;
wenzelm
parents: 61268
diff changeset
   960
        (fn (no_simp, (insts, opt_rule)) => fn _ =>
4d3527b94f2a more general types Proof.method / context_tactic;
wenzelm
parents: 61268
diff changeset
   961
          CONTEXT_METHOD (fn facts =>
61844
007d3b34080f tuned signature;
wenzelm
parents: 61841
diff changeset
   962
            Seq.DETERM (cases_context_tactic (not no_simp) insts opt_rule facts 1))))
59940
087d81f5213e local setup of induction tools, with restricted access to auxiliary consts;
wenzelm
parents: 59936
diff changeset
   963
      "case analysis on types or predicates/sets" #>
61844
007d3b34080f tuned signature;
wenzelm
parents: 61841
diff changeset
   964
    gen_induct_setup @{binding induct} induct_context_tactic #>
59940
087d81f5213e local setup of induction tools, with restricted access to auxiliary consts;
wenzelm
parents: 59936
diff changeset
   965
     Method.local_setup @{binding coinduct}
58826
2ed2eaabe3df modernized setup;
wenzelm
parents: 58002
diff changeset
   966
      (Scan.repeat (unless_more_args inst) -- taking -- Scan.option coinduct_rule >>
61841
4d3527b94f2a more general types Proof.method / context_tactic;
wenzelm
parents: 61268
diff changeset
   967
        (fn ((insts, taking), opt_rule) => fn _ => fn facts =>
61844
007d3b34080f tuned signature;
wenzelm
parents: 61841
diff changeset
   968
          Seq.DETERM (coinduct_context_tactic insts taking opt_rule facts 1)))
58826
2ed2eaabe3df modernized setup;
wenzelm
parents: 58002
diff changeset
   969
      "coinduction on types or predicates/sets");
24830
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   970
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   971
end;
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   972
a7b3ab44d993 moved Pure/Isar/induct_attrib.ML and Provers/induct_method.ML to Tools/induct.ML;
wenzelm
parents:
diff changeset
   973
end;