src/Pure/drule.ML
author wenzelm
Sun, 18 May 2008 15:04:09 +0200
changeset 26939 1035c89b4c02
parent 26653 60e0cf6bef89
child 27156 e9f2d5947887
permissions -rw-r--r--
moved global pretty/string_of functions from Sign to Syntax;
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
252
7532f95d7f44 removed eq_sg, pprint_sg, print_sg (now in sign.ML);
wenzelm
parents: 229
diff changeset
     1
(*  Title:      Pure/drule.ML
0
a5a9c433f639 Initial revision
clasohm
parents:
diff changeset
     2
    ID:         $Id$
252
7532f95d7f44 removed eq_sg, pprint_sg, print_sg (now in sign.ML);
wenzelm
parents: 229
diff changeset
     3
    Author:     Lawrence C Paulson, Cambridge University Computer Laboratory
0
a5a9c433f639 Initial revision
clasohm
parents:
diff changeset
     4
    Copyright   1993  University of Cambridge
a5a9c433f639 Initial revision
clasohm
parents:
diff changeset
     5
3766
8e1794c4e81b moved theory stuff (add_defs etc.) to theory.ML;
wenzelm
parents: 3653
diff changeset
     6
Derived rules and other operations on theorems.
0
a5a9c433f639 Initial revision
clasohm
parents:
diff changeset
     7
*)
a5a9c433f639 Initial revision
clasohm
parents:
diff changeset
     8
21578
a89f786b301a added INCR_COMP, COMP_INCR;
wenzelm
parents: 21566
diff changeset
     9
infix 0 RS RSN RL RLN MRS MRL OF COMP INCR_COMP COMP_INCR;
0
a5a9c433f639 Initial revision
clasohm
parents:
diff changeset
    10
5903
5d9beee36fbe export vars_of and friends;
wenzelm
parents: 5688
diff changeset
    11
signature BASIC_DRULE =
3766
8e1794c4e81b moved theory stuff (add_defs etc.) to theory.ML;
wenzelm
parents: 3653
diff changeset
    12
sig
18179
cf4b265007bf added protect_cong, cong_mono_thm;
wenzelm
parents: 18129
diff changeset
    13
  val mk_implies: cterm * cterm -> cterm
cf4b265007bf added protect_cong, cong_mono_thm;
wenzelm
parents: 18129
diff changeset
    14
  val list_implies: cterm list * cterm -> cterm
cf4b265007bf added protect_cong, cong_mono_thm;
wenzelm
parents: 18129
diff changeset
    15
  val strip_imp_prems: cterm -> cterm list
cf4b265007bf added protect_cong, cong_mono_thm;
wenzelm
parents: 18129
diff changeset
    16
  val strip_imp_concl: cterm -> cterm
cf4b265007bf added protect_cong, cong_mono_thm;
wenzelm
parents: 18129
diff changeset
    17
  val cprems_of: thm -> cterm list
cf4b265007bf added protect_cong, cong_mono_thm;
wenzelm
parents: 18129
diff changeset
    18
  val cterm_fun: (term -> term) -> (cterm -> cterm)
cf4b265007bf added protect_cong, cong_mono_thm;
wenzelm
parents: 18129
diff changeset
    19
  val ctyp_fun: (typ -> typ) -> (ctyp -> ctyp)
18206
faaaa458198d removed conj_mono;
wenzelm
parents: 18179
diff changeset
    20
  val read_insts: theory -> (indexname -> typ option) * (indexname -> sort option) ->
faaaa458198d removed conj_mono;
wenzelm
parents: 18179
diff changeset
    21
    (indexname -> typ option) * (indexname -> sort option) -> string list ->
faaaa458198d removed conj_mono;
wenzelm
parents: 18179
diff changeset
    22
    (indexname * string) list -> (ctyp * ctyp) list * (cterm * cterm) list
4285
05af145a61d4 cleaned signature;
wenzelm
parents: 4281
diff changeset
    23
  val types_sorts: thm -> (indexname-> typ option) * (indexname-> sort option)
18179
cf4b265007bf added protect_cong, cong_mono_thm;
wenzelm
parents: 18129
diff changeset
    24
  val forall_intr_list: cterm list -> thm -> thm
cf4b265007bf added protect_cong, cong_mono_thm;
wenzelm
parents: 18129
diff changeset
    25
  val forall_intr_frees: thm -> thm
cf4b265007bf added protect_cong, cong_mono_thm;
wenzelm
parents: 18129
diff changeset
    26
  val forall_intr_vars: thm -> thm
cf4b265007bf added protect_cong, cong_mono_thm;
wenzelm
parents: 18129
diff changeset
    27
  val forall_elim_list: cterm list -> thm -> thm
cf4b265007bf added protect_cong, cong_mono_thm;
wenzelm
parents: 18129
diff changeset
    28
  val gen_all: thm -> thm
cf4b265007bf added protect_cong, cong_mono_thm;
wenzelm
parents: 18129
diff changeset
    29
  val lift_all: cterm -> thm -> thm
cf4b265007bf added protect_cong, cong_mono_thm;
wenzelm
parents: 18129
diff changeset
    30
  val freeze_thaw: thm -> thm * (thm -> thm)
15495
50fde6f04e4c new treatment of demodulation in proof reconstruction
paulson
parents: 15442
diff changeset
    31
  val freeze_thaw_robust: thm -> thm * (int -> thm -> thm)
18179
cf4b265007bf added protect_cong, cong_mono_thm;
wenzelm
parents: 18129
diff changeset
    32
  val implies_elim_list: thm -> thm list -> thm
cf4b265007bf added protect_cong, cong_mono_thm;
wenzelm
parents: 18129
diff changeset
    33
  val implies_intr_list: cterm list -> thm -> thm
18206
faaaa458198d removed conj_mono;
wenzelm
parents: 18179
diff changeset
    34
  val instantiate: (ctyp * ctyp) list * (cterm * cterm) list -> thm -> thm
21603
0fa36ea9aaf5 added zero_var_indexes_list;
wenzelm
parents: 21600
diff changeset
    35
  val zero_var_indexes_list: thm list -> thm list
18179
cf4b265007bf added protect_cong, cong_mono_thm;
wenzelm
parents: 18129
diff changeset
    36
  val zero_var_indexes: thm -> thm
cf4b265007bf added protect_cong, cong_mono_thm;
wenzelm
parents: 18129
diff changeset
    37
  val implies_intr_hyps: thm -> thm
cf4b265007bf added protect_cong, cong_mono_thm;
wenzelm
parents: 18129
diff changeset
    38
  val standard: thm -> thm
cf4b265007bf added protect_cong, cong_mono_thm;
wenzelm
parents: 18129
diff changeset
    39
  val standard': thm -> thm
cf4b265007bf added protect_cong, cong_mono_thm;
wenzelm
parents: 18129
diff changeset
    40
  val rotate_prems: int -> thm -> thm
cf4b265007bf added protect_cong, cong_mono_thm;
wenzelm
parents: 18129
diff changeset
    41
  val rearrange_prems: int list -> thm -> thm
cf4b265007bf added protect_cong, cong_mono_thm;
wenzelm
parents: 18129
diff changeset
    42
  val RSN: thm * (int * thm) -> thm
cf4b265007bf added protect_cong, cong_mono_thm;
wenzelm
parents: 18129
diff changeset
    43
  val RS: thm * thm -> thm
cf4b265007bf added protect_cong, cong_mono_thm;
wenzelm
parents: 18129
diff changeset
    44
  val RLN: thm list * (int * thm list) -> thm list
cf4b265007bf added protect_cong, cong_mono_thm;
wenzelm
parents: 18129
diff changeset
    45
  val RL: thm list * thm list -> thm list
cf4b265007bf added protect_cong, cong_mono_thm;
wenzelm
parents: 18129
diff changeset
    46
  val MRS: thm list * thm -> thm
cf4b265007bf added protect_cong, cong_mono_thm;
wenzelm
parents: 18129
diff changeset
    47
  val MRL: thm list list * thm list -> thm list
cf4b265007bf added protect_cong, cong_mono_thm;
wenzelm
parents: 18129
diff changeset
    48
  val OF: thm * thm list -> thm
cf4b265007bf added protect_cong, cong_mono_thm;
wenzelm
parents: 18129
diff changeset
    49
  val compose: thm * int * thm -> thm list
cf4b265007bf added protect_cong, cong_mono_thm;
wenzelm
parents: 18129
diff changeset
    50
  val COMP: thm * thm -> thm
21578
a89f786b301a added INCR_COMP, COMP_INCR;
wenzelm
parents: 21566
diff changeset
    51
  val INCR_COMP: thm * thm -> thm
a89f786b301a added INCR_COMP, COMP_INCR;
wenzelm
parents: 21566
diff changeset
    52
  val COMP_INCR: thm * thm -> thm
16425
2427be27cc60 accomodate identification of type Sign.sg and theory;
wenzelm
parents: 15949
diff changeset
    53
  val read_instantiate_sg: theory -> (string*string)list -> thm -> thm
18179
cf4b265007bf added protect_cong, cong_mono_thm;
wenzelm
parents: 18129
diff changeset
    54
  val read_instantiate: (string*string)list -> thm -> thm
cf4b265007bf added protect_cong, cong_mono_thm;
wenzelm
parents: 18129
diff changeset
    55
  val cterm_instantiate: (cterm*cterm)list -> thm -> thm
cf4b265007bf added protect_cong, cong_mono_thm;
wenzelm
parents: 18129
diff changeset
    56
  val size_of_thm: thm -> int
cf4b265007bf added protect_cong, cong_mono_thm;
wenzelm
parents: 18129
diff changeset
    57
  val reflexive_thm: thm
cf4b265007bf added protect_cong, cong_mono_thm;
wenzelm
parents: 18129
diff changeset
    58
  val symmetric_thm: thm
cf4b265007bf added protect_cong, cong_mono_thm;
wenzelm
parents: 18129
diff changeset
    59
  val transitive_thm: thm
cf4b265007bf added protect_cong, cong_mono_thm;
wenzelm
parents: 18129
diff changeset
    60
  val symmetric_fun: thm -> thm
cf4b265007bf added protect_cong, cong_mono_thm;
wenzelm
parents: 18129
diff changeset
    61
  val extensional: thm -> thm
18820
24dcd5b0e26b added equals_cong;
wenzelm
parents: 18799
diff changeset
    62
  val equals_cong: thm
18179
cf4b265007bf added protect_cong, cong_mono_thm;
wenzelm
parents: 18129
diff changeset
    63
  val imp_cong: thm
cf4b265007bf added protect_cong, cong_mono_thm;
wenzelm
parents: 18129
diff changeset
    64
  val swap_prems_eq: thm
cf4b265007bf added protect_cong, cong_mono_thm;
wenzelm
parents: 18129
diff changeset
    65
  val asm_rl: thm
cf4b265007bf added protect_cong, cong_mono_thm;
wenzelm
parents: 18129
diff changeset
    66
  val cut_rl: thm
cf4b265007bf added protect_cong, cong_mono_thm;
wenzelm
parents: 18129
diff changeset
    67
  val revcut_rl: thm
cf4b265007bf added protect_cong, cong_mono_thm;
wenzelm
parents: 18129
diff changeset
    68
  val thin_rl: thm
4285
05af145a61d4 cleaned signature;
wenzelm
parents: 4281
diff changeset
    69
  val triv_forall_equality: thm
19051
5212516f1a98 added distinct_prems_rl;
wenzelm
parents: 18929
diff changeset
    70
  val distinct_prems_rl: thm
18179
cf4b265007bf added protect_cong, cong_mono_thm;
wenzelm
parents: 18129
diff changeset
    71
  val swap_prems_rl: thm
cf4b265007bf added protect_cong, cong_mono_thm;
wenzelm
parents: 18129
diff changeset
    72
  val equal_intr_rule: thm
cf4b265007bf added protect_cong, cong_mono_thm;
wenzelm
parents: 18129
diff changeset
    73
  val equal_elim_rule1: thm
19421
1051bde222db added equal_elim_rule2;
wenzelm
parents: 19183
diff changeset
    74
  val equal_elim_rule2: thm
18179
cf4b265007bf added protect_cong, cong_mono_thm;
wenzelm
parents: 18129
diff changeset
    75
  val instantiate': ctyp option list -> cterm option list -> thm -> thm
5903
5d9beee36fbe export vars_of and friends;
wenzelm
parents: 5688
diff changeset
    76
end;
5d9beee36fbe export vars_of and friends;
wenzelm
parents: 5688
diff changeset
    77
5d9beee36fbe export vars_of and friends;
wenzelm
parents: 5688
diff changeset
    78
signature DRULE =
5d9beee36fbe export vars_of and friends;
wenzelm
parents: 5688
diff changeset
    79
sig
5d9beee36fbe export vars_of and friends;
wenzelm
parents: 5688
diff changeset
    80
  include BASIC_DRULE
19999
9592df0c3176 added generalize;
wenzelm
parents: 19906
diff changeset
    81
  val generalize: string list * string list -> thm -> thm
15949
fd02dd265b78 new cterm primitives
paulson
parents: 15925
diff changeset
    82
  val list_comb: cterm * cterm list -> cterm
12908
53bfe07a7916 New function strip_comb (cterm version of Term.strip_comb).
berghofe
parents: 12800
diff changeset
    83
  val strip_comb: cterm -> cterm * cterm list
15262
49f70168f4c0 Added function strip_type (for ctyps).
berghofe
parents: 15001
diff changeset
    84
  val strip_type: ctyp -> ctyp list * ctyp
15949
fd02dd265b78 new cterm primitives
paulson
parents: 15925
diff changeset
    85
  val beta_conv: cterm -> cterm -> cterm
15669
2b1f1902505d added add_used; include tpairs;
wenzelm
parents: 15574
diff changeset
    86
  val add_used: thm -> string list -> string list
17713
7efbe0ec9d4c Optimized and exported flexflex_unique.
berghofe
parents: 17657
diff changeset
    87
  val flexflex_unique: thm -> thm
19421
1051bde222db added equal_elim_rule2;
wenzelm
parents: 19183
diff changeset
    88
  val store_thm: bstring -> thm -> thm
1051bde222db added equal_elim_rule2;
wenzelm
parents: 19183
diff changeset
    89
  val store_standard_thm: bstring -> thm -> thm
1051bde222db added equal_elim_rule2;
wenzelm
parents: 19183
diff changeset
    90
  val store_thm_open: bstring -> thm -> thm
1051bde222db added equal_elim_rule2;
wenzelm
parents: 19183
diff changeset
    91
  val store_standard_thm_open: bstring -> thm -> thm
11975
129c6679e8c4 rules for meta-level conjunction;
wenzelm
parents: 11960
diff changeset
    92
  val compose_single: thm * int * thm -> thm
18468
43951ffb6304 fixed has_internal;
wenzelm
parents: 18375
diff changeset
    93
  val imp_cong_rule: thm -> thm -> thm
22939
2afc93a3d8f4 proper type for fun/arg_cong_rule;
wenzelm
parents: 22938
diff changeset
    94
  val arg_cong_rule: cterm -> thm -> thm
23568
afecdba16452 added binop_cong_rule;
wenzelm
parents: 23537
diff changeset
    95
  val binop_cong_rule: cterm -> thm -> thm -> thm
22939
2afc93a3d8f4 proper type for fun/arg_cong_rule;
wenzelm
parents: 22938
diff changeset
    96
  val fun_cong_rule: thm -> cterm -> thm
15001
fb2141a9f8c0 Moved conversion rules from MetaSimplifier to Drule. refl_implies removed
skalberg
parents: 14854
diff changeset
    97
  val beta_eta_conversion: cterm -> thm
15925
f13f4694c36d Added eta_long_conversion.
berghofe
parents: 15875
diff changeset
    98
  val eta_long_conversion: cterm -> thm
20861
fd0e33caeb3b a few new functions on thms and cterms
paulson
parents: 20669
diff changeset
    99
  val eta_contraction_rule: thm -> thm
11975
129c6679e8c4 rules for meta-level conjunction;
wenzelm
parents: 11960
diff changeset
   100
  val norm_hhf_eq: thm
12800
abcf9fd6ee65 added is_norm_hhf (from logic.ML);
wenzelm
parents: 12756
diff changeset
   101
  val is_norm_hhf: term -> bool
16425
2427be27cc60 accomodate identification of type Sign.sg and theory;
wenzelm
parents: 15949
diff changeset
   102
  val norm_hhf: theory -> term -> term
20298
6915973e88f3 removed obsolete frees/vars_of etc.;
wenzelm
parents: 20260
diff changeset
   103
  val norm_hhf_cterm: cterm -> cterm
18025
7dac6858168d added incr_indexes;
wenzelm
parents: 17964
diff changeset
   104
  val protect: cterm -> cterm
7dac6858168d added incr_indexes;
wenzelm
parents: 17964
diff changeset
   105
  val protectI: thm
7dac6858168d added incr_indexes;
wenzelm
parents: 17964
diff changeset
   106
  val protectD: thm
18179
cf4b265007bf added protect_cong, cong_mono_thm;
wenzelm
parents: 18129
diff changeset
   107
  val protect_cong: thm
18025
7dac6858168d added incr_indexes;
wenzelm
parents: 17964
diff changeset
   108
  val implies_intr_protected: cterm list -> thm -> thm
19775
06cb6743adf6 support embedded terms;
wenzelm
parents: 19753
diff changeset
   109
  val termI: thm
06cb6743adf6 support embedded terms;
wenzelm
parents: 19753
diff changeset
   110
  val mk_term: cterm -> thm
06cb6743adf6 support embedded terms;
wenzelm
parents: 19753
diff changeset
   111
  val dest_term: thm -> cterm
21519
33f109ea389f added cterm_rule;
wenzelm
parents: 21437
diff changeset
   112
  val cterm_rule: (thm -> thm) -> cterm -> cterm
20881
54481abec257 added term_rule;
wenzelm
parents: 20861
diff changeset
   113
  val term_rule: theory -> (thm -> thm) -> term -> term
24005
2d473ed15491 added dummy_thm, is_dummy_thm;
wenzelm
parents: 23568
diff changeset
   114
  val dummy_thm: thm
19523
0531e5abf680 added sort_triv;
wenzelm
parents: 19504
diff changeset
   115
  val sort_triv: theory -> typ * sort -> thm list
19504
56541f86094a added unconstrainTs;
wenzelm
parents: 19482
diff changeset
   116
  val unconstrainTs: thm -> thm
23423
b2d64f86d21b added with_subgoal;
wenzelm
parents: 23178
diff changeset
   117
  val with_subgoal: int -> (thm -> thm) -> thm -> thm
14081
6c0f67e2f8d5 Added functions for renaming bound variables.
berghofe
parents: 13659
diff changeset
   118
  val rename_bvars: (string * string) list -> thm -> thm
6c0f67e2f8d5 Added functions for renaming bound variables.
berghofe
parents: 13659
diff changeset
   119
  val rename_bvars': string option list -> thm -> thm
24426
d89e409cfe4e new derived rule: incr_type_indexes
paulson
parents: 24241
diff changeset
   120
  val incr_type_indexes: int -> thm -> thm
19124
d9ac560a7bc8 removed rename_indexes_wrt;
wenzelm
parents: 19051
diff changeset
   121
  val incr_indexes: thm -> thm -> thm
d9ac560a7bc8 removed rename_indexes_wrt;
wenzelm
parents: 19051
diff changeset
   122
  val incr_indexes2: thm -> thm -> thm -> thm
12297
2ce7b42b0a64 added remdups_rl;
wenzelm
parents: 12283
diff changeset
   123
  val remdups_rl: thm
18225
699aad0746e2 export map_tags;
wenzelm
parents: 18206
diff changeset
   124
  val multi_resolve: thm list -> thm -> thm Seq.seq
699aad0746e2 export map_tags;
wenzelm
parents: 18206
diff changeset
   125
  val multi_resolves: thm list -> thm list -> thm Seq.seq
13325
5b5e12f0aee0 Added function abs_def.
berghofe
parents: 13198
diff changeset
   126
  val abs_def: thm -> thm
16425
2427be27cc60 accomodate identification of type Sign.sg and theory;
wenzelm
parents: 15949
diff changeset
   127
  val read_instantiate_sg': theory -> (indexname * string) list -> thm -> thm
15797
a63605582573 - Eliminated nodup_vars check.
berghofe
parents: 15669
diff changeset
   128
  val read_instantiate': (indexname * string) list -> thm -> thm
3766
8e1794c4e81b moved theory stuff (add_defs etc.) to theory.ML;
wenzelm
parents: 3653
diff changeset
   129
end;
0
a5a9c433f639 Initial revision
clasohm
parents:
diff changeset
   130
5903
5d9beee36fbe export vars_of and friends;
wenzelm
parents: 5688
diff changeset
   131
structure Drule: DRULE =
0
a5a9c433f639 Initial revision
clasohm
parents:
diff changeset
   132
struct
a5a9c433f639 Initial revision
clasohm
parents:
diff changeset
   133
3991
4cb2f2422695 ProtoPure.thy;
wenzelm
parents: 3766
diff changeset
   134
16682
wenzelm
parents: 16595
diff changeset
   135
(** some cterm->cterm operations: faster than calling cterm_of! **)
708
8422e50adce0 Pure/drule/cprems_of, cskip_flexpairs, cstrip_imp_prems: new cterm operations
lcp
parents: 668
diff changeset
   136
8422e50adce0 Pure/drule/cprems_of, cskip_flexpairs, cstrip_imp_prems: new cterm operations
lcp
parents: 668
diff changeset
   137
(* A1==>...An==>B  goes to  [A1,...,An], where B is not an implication *)
2004
3411fe560611 New operations on cterms. Now same names as in Logic
paulson
parents: 1906
diff changeset
   138
fun strip_imp_prems ct =
22906
195b7515911a moved some operations to more_thm.ML and conv.ML;
wenzelm
parents: 22695
diff changeset
   139
  let val (cA, cB) = Thm.dest_implies ct
20579
4dc799edef89 Thm.dest_arg;
wenzelm
parents: 20509
diff changeset
   140
  in cA :: strip_imp_prems cB end
4dc799edef89 Thm.dest_arg;
wenzelm
parents: 20509
diff changeset
   141
  handle TERM _ => [];
708
8422e50adce0 Pure/drule/cprems_of, cskip_flexpairs, cstrip_imp_prems: new cterm operations
lcp
parents: 668
diff changeset
   142
2004
3411fe560611 New operations on cterms. Now same names as in Logic
paulson
parents: 1906
diff changeset
   143
(* A1==>...An==>B  goes to B, where B is not an implication *)
3411fe560611 New operations on cterms. Now same names as in Logic
paulson
parents: 1906
diff changeset
   144
fun strip_imp_concl ct =
20579
4dc799edef89 Thm.dest_arg;
wenzelm
parents: 20509
diff changeset
   145
  (case Thm.term_of ct of
4dc799edef89 Thm.dest_arg;
wenzelm
parents: 20509
diff changeset
   146
    Const ("==>", _) $ _ $ _ => strip_imp_concl (Thm.dest_arg ct)
4dc799edef89 Thm.dest_arg;
wenzelm
parents: 20509
diff changeset
   147
  | _ => ct);
2004
3411fe560611 New operations on cterms. Now same names as in Logic
paulson
parents: 1906
diff changeset
   148
708
8422e50adce0 Pure/drule/cprems_of, cskip_flexpairs, cstrip_imp_prems: new cterm operations
lcp
parents: 668
diff changeset
   149
(*The premises of a theorem, as a cterm list*)
13659
3cf622f6b0b2 Removed obsolete functions dealing with flex-flex constraints.
berghofe
parents: 13650
diff changeset
   150
val cprems_of = strip_imp_prems o cprop_of;
708
8422e50adce0 Pure/drule/cprems_of, cskip_flexpairs, cstrip_imp_prems: new cterm operations
lcp
parents: 668
diff changeset
   151
26627
dac6d56b7c8d rep_cterm/rep_thm: no longer dereference theory_ref;
wenzelm
parents: 26487
diff changeset
   152
fun cterm_fun f ct = Thm.cterm_of (Thm.theory_of_cterm ct) (f (Thm.term_of ct));
dac6d56b7c8d rep_cterm/rep_thm: no longer dereference theory_ref;
wenzelm
parents: 26487
diff changeset
   153
fun ctyp_fun f cT = Thm.ctyp_of (Thm.theory_of_ctyp cT) (f (Thm.typ_of cT));
15797
a63605582573 - Eliminated nodup_vars check.
berghofe
parents: 15669
diff changeset
   154
26487
49850ac120e3 certify wrt. dynamic context;
wenzelm
parents: 26424
diff changeset
   155
fun certify t = Thm.cterm_of (Context.the_theory (Context.the_thread_data ())) t;
9547
8dad21f06b24 more cterm operations: mk_implies, list_implies
paulson
parents: 9460
diff changeset
   156
26487
49850ac120e3 certify wrt. dynamic context;
wenzelm
parents: 26424
diff changeset
   157
val implies = certify Term.implies;
19183
3421668ae316 added mk_conjunction;
wenzelm
parents: 19124
diff changeset
   158
fun mk_implies (A, B) = Thm.capply (Thm.capply implies A) B;
9547
8dad21f06b24 more cterm operations: mk_implies, list_implies
paulson
parents: 9460
diff changeset
   159
8dad21f06b24 more cterm operations: mk_implies, list_implies
paulson
parents: 9460
diff changeset
   160
(*cterm version of list_implies: [A1,...,An], B  goes to [|A1;==>;An|]==>B *)
8dad21f06b24 more cterm operations: mk_implies, list_implies
paulson
parents: 9460
diff changeset
   161
fun list_implies([], B) = B
8dad21f06b24 more cterm operations: mk_implies, list_implies
paulson
parents: 9460
diff changeset
   162
  | list_implies(A::AS, B) = mk_implies (A, list_implies(AS,B));
8dad21f06b24 more cterm operations: mk_implies, list_implies
paulson
parents: 9460
diff changeset
   163
15949
fd02dd265b78 new cterm primitives
paulson
parents: 15925
diff changeset
   164
(*cterm version of list_comb: maps  (f, [t1,...,tn])  to  f(t1,...,tn) *)
fd02dd265b78 new cterm primitives
paulson
parents: 15925
diff changeset
   165
fun list_comb (f, []) = f
fd02dd265b78 new cterm primitives
paulson
parents: 15925
diff changeset
   166
  | list_comb (f, t::ts) = list_comb (Thm.capply f t, ts);
fd02dd265b78 new cterm primitives
paulson
parents: 15925
diff changeset
   167
12908
53bfe07a7916 New function strip_comb (cterm version of Term.strip_comb).
berghofe
parents: 12800
diff changeset
   168
(*cterm version of strip_comb: maps  f(t1,...,tn)  to  (f, [t1,...,tn]) *)
18179
cf4b265007bf added protect_cong, cong_mono_thm;
wenzelm
parents: 18129
diff changeset
   169
fun strip_comb ct =
12908
53bfe07a7916 New function strip_comb (cterm version of Term.strip_comb).
berghofe
parents: 12800
diff changeset
   170
  let
53bfe07a7916 New function strip_comb (cterm version of Term.strip_comb).
berghofe
parents: 12800
diff changeset
   171
    fun stripc (p as (ct, cts)) =
53bfe07a7916 New function strip_comb (cterm version of Term.strip_comb).
berghofe
parents: 12800
diff changeset
   172
      let val (ct1, ct2) = Thm.dest_comb ct
53bfe07a7916 New function strip_comb (cterm version of Term.strip_comb).
berghofe
parents: 12800
diff changeset
   173
      in stripc (ct1, ct2 :: cts) end handle CTERM _ => p
53bfe07a7916 New function strip_comb (cterm version of Term.strip_comb).
berghofe
parents: 12800
diff changeset
   174
  in stripc (ct, []) end;
53bfe07a7916 New function strip_comb (cterm version of Term.strip_comb).
berghofe
parents: 12800
diff changeset
   175
15262
49f70168f4c0 Added function strip_type (for ctyps).
berghofe
parents: 15001
diff changeset
   176
(* cterm version of strip_type: maps  [T1,...,Tn]--->T  to   ([T1,T2,...,Tn], T) *)
49f70168f4c0 Added function strip_type (for ctyps).
berghofe
parents: 15001
diff changeset
   177
fun strip_type cT = (case Thm.typ_of cT of
49f70168f4c0 Added function strip_type (for ctyps).
berghofe
parents: 15001
diff changeset
   178
    Type ("fun", _) =>
49f70168f4c0 Added function strip_type (for ctyps).
berghofe
parents: 15001
diff changeset
   179
      let
49f70168f4c0 Added function strip_type (for ctyps).
berghofe
parents: 15001
diff changeset
   180
        val [cT1, cT2] = Thm.dest_ctyp cT;
49f70168f4c0 Added function strip_type (for ctyps).
berghofe
parents: 15001
diff changeset
   181
        val (cTs, cT') = strip_type cT2
49f70168f4c0 Added function strip_type (for ctyps).
berghofe
parents: 15001
diff changeset
   182
      in (cT1 :: cTs, cT') end
49f70168f4c0 Added function strip_type (for ctyps).
berghofe
parents: 15001
diff changeset
   183
  | _ => ([], cT));
49f70168f4c0 Added function strip_type (for ctyps).
berghofe
parents: 15001
diff changeset
   184
15949
fd02dd265b78 new cterm primitives
paulson
parents: 15925
diff changeset
   185
(*Beta-conversion for cterms, where x is an abstraction. Simply returns the rhs
fd02dd265b78 new cterm primitives
paulson
parents: 15925
diff changeset
   186
  of the meta-equality returned by the beta_conversion rule.*)
18179
cf4b265007bf added protect_cong, cong_mono_thm;
wenzelm
parents: 18129
diff changeset
   187
fun beta_conv x y =
20579
4dc799edef89 Thm.dest_arg;
wenzelm
parents: 20509
diff changeset
   188
  Thm.dest_arg (cprop_of (Thm.beta_conversion false (Thm.capply x y)));
15949
fd02dd265b78 new cterm primitives
paulson
parents: 15925
diff changeset
   189
15875
3e9a54e033b9 added plain_prop_of;
wenzelm
parents: 15797
diff changeset
   190
708
8422e50adce0 Pure/drule/cprems_of, cskip_flexpairs, cstrip_imp_prems: new cterm operations
lcp
parents: 668
diff changeset
   191
229
4002c4cd450c Pure: MAJOR CHANGE. Moved ML types ctyp and cterm and their associated
lcp
parents: 214
diff changeset
   192
(** reading of instantiations **)
4002c4cd450c Pure: MAJOR CHANGE. Moved ML types ctyp and cterm and their associated
lcp
parents: 214
diff changeset
   193
4002c4cd450c Pure: MAJOR CHANGE. Moved ML types ctyp and cterm and their associated
lcp
parents: 214
diff changeset
   194
fun absent ixn =
22681
9d42e5365ad1 cleaned/simplified Sign.read_typ, Thm.read_cterm etc.;
wenzelm
parents: 22561
diff changeset
   195
  error("No such variable in term: " ^ Term.string_of_vname ixn);
229
4002c4cd450c Pure: MAJOR CHANGE. Moved ML types ctyp and cterm and their associated
lcp
parents: 214
diff changeset
   196
4002c4cd450c Pure: MAJOR CHANGE. Moved ML types ctyp and cterm and their associated
lcp
parents: 214
diff changeset
   197
fun inst_failure ixn =
22681
9d42e5365ad1 cleaned/simplified Sign.read_typ, Thm.read_cterm etc.;
wenzelm
parents: 22561
diff changeset
   198
  error("Instantiation of " ^ Term.string_of_vname ixn ^ " fails");
229
4002c4cd450c Pure: MAJOR CHANGE. Moved ML types ctyp and cterm and their associated
lcp
parents: 214
diff changeset
   199
16425
2427be27cc60 accomodate identification of type Sign.sg and theory;
wenzelm
parents: 15949
diff changeset
   200
fun read_insts thy (rtypes,rsorts) (types,sorts) used insts =
10403
2955ee2424ce Sign.typ_instance;
wenzelm
parents: 9862
diff changeset
   201
let
15442
3b75e1b22ff1 Added variants of instantiation functions that operate on pairs of type
berghofe
parents: 15262
diff changeset
   202
    fun is_tv ((a, _), _) =
3b75e1b22ff1 Added variants of instantiation functions that operate on pairs of type
berghofe
parents: 15262
diff changeset
   203
      (case Symbol.explode a of "'" :: _ => true | _ => false);
15570
8d8c70b41bab Move towards standard functions.
skalberg
parents: 15545
diff changeset
   204
    val (tvs, vs) = List.partition is_tv insts;
15797
a63605582573 - Eliminated nodup_vars check.
berghofe
parents: 15669
diff changeset
   205
    fun sort_of ixn = case rsorts ixn of SOME S => S | NONE => absent ixn;
15442
3b75e1b22ff1 Added variants of instantiation functions that operate on pairs of type
berghofe
parents: 15262
diff changeset
   206
    fun readT (ixn, st) =
15797
a63605582573 - Eliminated nodup_vars check.
berghofe
parents: 15669
diff changeset
   207
        let val S = sort_of ixn;
22681
9d42e5365ad1 cleaned/simplified Sign.read_typ, Thm.read_cterm etc.;
wenzelm
parents: 22561
diff changeset
   208
            val T = Sign.read_def_typ (thy,sorts) st;
16425
2427be27cc60 accomodate identification of type Sign.sg and theory;
wenzelm
parents: 15949
diff changeset
   209
        in if Sign.typ_instance thy (T, TVar(ixn,S)) then (ixn,T)
4281
6c6073b13600 Added read_def_cterms for simultaneous reading/typing of terms under
nipkow
parents: 4270
diff changeset
   210
           else inst_failure ixn
6c6073b13600 Added read_def_cterms for simultaneous reading/typing of terms under
nipkow
parents: 4270
diff changeset
   211
        end
6c6073b13600 Added read_def_cterms for simultaneous reading/typing of terms under
nipkow
parents: 4270
diff changeset
   212
    val tye = map readT tvs;
6c6073b13600 Added read_def_cterms for simultaneous reading/typing of terms under
nipkow
parents: 4270
diff changeset
   213
    fun mkty(ixn,st) = (case rtypes ixn of
15531
08c8dad8e399 Deleted Library.option type.
skalberg
parents: 15495
diff changeset
   214
                          SOME T => (ixn,(st,typ_subst_TVars tye T))
08c8dad8e399 Deleted Library.option type.
skalberg
parents: 15495
diff changeset
   215
                        | NONE => absent ixn);
4281
6c6073b13600 Added read_def_cterms for simultaneous reading/typing of terms under
nipkow
parents: 4270
diff changeset
   216
    val ixnsTs = map mkty vs;
6c6073b13600 Added read_def_cterms for simultaneous reading/typing of terms under
nipkow
parents: 4270
diff changeset
   217
    val ixns = map fst ixnsTs
6c6073b13600 Added read_def_cterms for simultaneous reading/typing of terms under
nipkow
parents: 4270
diff changeset
   218
    and sTs  = map snd ixnsTs
22681
9d42e5365ad1 cleaned/simplified Sign.read_typ, Thm.read_cterm etc.;
wenzelm
parents: 22561
diff changeset
   219
    val (cts,tye2) = Thm.read_def_cterms(thy,types,sorts) used false sTs;
4281
6c6073b13600 Added read_def_cterms for simultaneous reading/typing of terms under
nipkow
parents: 4270
diff changeset
   220
    fun mkcVar(ixn,T) =
6c6073b13600 Added read_def_cterms for simultaneous reading/typing of terms under
nipkow
parents: 4270
diff changeset
   221
        let val U = typ_subst_TVars tye2 T
16425
2427be27cc60 accomodate identification of type Sign.sg and theory;
wenzelm
parents: 15949
diff changeset
   222
        in cterm_of thy (Var(ixn,U)) end
4281
6c6073b13600 Added read_def_cterms for simultaneous reading/typing of terms under
nipkow
parents: 4270
diff changeset
   223
    val ixnTs = ListPair.zip(ixns, map snd sTs)
16425
2427be27cc60 accomodate identification of type Sign.sg and theory;
wenzelm
parents: 15949
diff changeset
   224
in (map (fn (ixn, T) => (ctyp_of thy (TVar (ixn, sort_of ixn)),
2427be27cc60 accomodate identification of type Sign.sg and theory;
wenzelm
parents: 15949
diff changeset
   225
      ctyp_of thy T)) (tye2 @ tye),
4281
6c6073b13600 Added read_def_cterms for simultaneous reading/typing of terms under
nipkow
parents: 4270
diff changeset
   226
    ListPair.zip(map mkcVar ixnTs,cts))
6c6073b13600 Added read_def_cterms for simultaneous reading/typing of terms under
nipkow
parents: 4270
diff changeset
   227
end;
229
4002c4cd450c Pure: MAJOR CHANGE. Moved ML types ctyp and cterm and their associated
lcp
parents: 214
diff changeset
   228
4002c4cd450c Pure: MAJOR CHANGE. Moved ML types ctyp and cterm and their associated
lcp
parents: 214
diff changeset
   229
252
7532f95d7f44 removed eq_sg, pprint_sg, print_sg (now in sign.ML);
wenzelm
parents: 229
diff changeset
   230
(*** Find the type (sort) associated with a (T)Var or (T)Free in a term
0
a5a9c433f639 Initial revision
clasohm
parents:
diff changeset
   231
     Used for establishing default types (of variables) and sorts (of
a5a9c433f639 Initial revision
clasohm
parents:
diff changeset
   232
     type variables) when reading another term.
a5a9c433f639 Initial revision
clasohm
parents:
diff changeset
   233
     Index -1 indicates that a (T)Free rather than a (T)Var is wanted.
a5a9c433f639 Initial revision
clasohm
parents:
diff changeset
   234
***)
a5a9c433f639 Initial revision
clasohm
parents:
diff changeset
   235
a5a9c433f639 Initial revision
clasohm
parents:
diff changeset
   236
fun types_sorts thm =
20329
82cbec8f981b tuned types_sorts, add_used;
wenzelm
parents: 20298
diff changeset
   237
  let
22695
17073e9b94f2 moved Drule.plain_prop_of, Drule.fold_terms to more_thm.ML;
wenzelm
parents: 22681
diff changeset
   238
    val vars = Thm.fold_terms Term.add_vars thm [];
17073e9b94f2 moved Drule.plain_prop_of, Drule.fold_terms to more_thm.ML;
wenzelm
parents: 22681
diff changeset
   239
    val frees = Thm.fold_terms Term.add_frees thm [];
17073e9b94f2 moved Drule.plain_prop_of, Drule.fold_terms to more_thm.ML;
wenzelm
parents: 22681
diff changeset
   240
    val tvars = Thm.fold_terms Term.add_tvars thm [];
17073e9b94f2 moved Drule.plain_prop_of, Drule.fold_terms to more_thm.ML;
wenzelm
parents: 22681
diff changeset
   241
    val tfrees = Thm.fold_terms Term.add_tfrees thm [];
20329
82cbec8f981b tuned types_sorts, add_used;
wenzelm
parents: 20298
diff changeset
   242
    fun types (a, i) =
82cbec8f981b tuned types_sorts, add_used;
wenzelm
parents: 20298
diff changeset
   243
      if i < 0 then AList.lookup (op =) frees a else AList.lookup (op =) vars (a, i);
82cbec8f981b tuned types_sorts, add_used;
wenzelm
parents: 20298
diff changeset
   244
    fun sorts (a, i) =
82cbec8f981b tuned types_sorts, add_used;
wenzelm
parents: 20298
diff changeset
   245
      if i < 0 then AList.lookup (op =) tfrees a else AList.lookup (op =) tvars (a, i);
82cbec8f981b tuned types_sorts, add_used;
wenzelm
parents: 20298
diff changeset
   246
  in (types, sorts) end;
0
a5a9c433f639 Initial revision
clasohm
parents:
diff changeset
   247
20329
82cbec8f981b tuned types_sorts, add_used;
wenzelm
parents: 20298
diff changeset
   248
val add_used =
22695
17073e9b94f2 moved Drule.plain_prop_of, Drule.fold_terms to more_thm.ML;
wenzelm
parents: 22681
diff changeset
   249
  (Thm.fold_terms o fold_types o fold_atyps)
20329
82cbec8f981b tuned types_sorts, add_used;
wenzelm
parents: 20298
diff changeset
   250
    (fn TFree (a, _) => insert (op =) a
82cbec8f981b tuned types_sorts, add_used;
wenzelm
parents: 20298
diff changeset
   251
      | TVar ((a, _), _) => insert (op =) a
82cbec8f981b tuned types_sorts, add_used;
wenzelm
parents: 20298
diff changeset
   252
      | _ => I);
15669
2b1f1902505d added add_used; include tpairs;
wenzelm
parents: 15574
diff changeset
   253
7636
102a4b6b83a6 strip_shyps_warning;
wenzelm
parents: 7467
diff changeset
   254
9455
f23722b4fbe7 export has_internal;
wenzelm
parents: 9418
diff changeset
   255
0
a5a9c433f639 Initial revision
clasohm
parents:
diff changeset
   256
(** Standardization of rules **)
a5a9c433f639 Initial revision
clasohm
parents:
diff changeset
   257
19523
0531e5abf680 added sort_triv;
wenzelm
parents: 19504
diff changeset
   258
(* type classes and sorts *)
0531e5abf680 added sort_triv;
wenzelm
parents: 19504
diff changeset
   259
0531e5abf680 added sort_triv;
wenzelm
parents: 19504
diff changeset
   260
fun sort_triv thy (T, S) =
0531e5abf680 added sort_triv;
wenzelm
parents: 19504
diff changeset
   261
  let
0531e5abf680 added sort_triv;
wenzelm
parents: 19504
diff changeset
   262
    val certT = Thm.ctyp_of thy;
0531e5abf680 added sort_triv;
wenzelm
parents: 19504
diff changeset
   263
    val cT = certT T;
0531e5abf680 added sort_triv;
wenzelm
parents: 19504
diff changeset
   264
    fun class_triv c =
0531e5abf680 added sort_triv;
wenzelm
parents: 19504
diff changeset
   265
      Thm.class_triv thy c
24848
5dbbd33c3236 replaced literal 'a by Name.aT;
wenzelm
parents: 24426
diff changeset
   266
      |> Thm.instantiate ([(certT (TVar ((Name.aT, 0), [c])), cT)], []);
19523
0531e5abf680 added sort_triv;
wenzelm
parents: 19504
diff changeset
   267
  in map class_triv S end;
0531e5abf680 added sort_triv;
wenzelm
parents: 19504
diff changeset
   268
19504
56541f86094a added unconstrainTs;
wenzelm
parents: 19482
diff changeset
   269
fun unconstrainTs th =
20298
6915973e88f3 removed obsolete frees/vars_of etc.;
wenzelm
parents: 20260
diff changeset
   270
  fold (Thm.unconstrainT o Thm.ctyp_of (Thm.theory_of_thm th) o TVar)
22695
17073e9b94f2 moved Drule.plain_prop_of, Drule.fold_terms to more_thm.ML;
wenzelm
parents: 22681
diff changeset
   271
    (Thm.fold_terms Term.add_tvars th []) th;
19504
56541f86094a added unconstrainTs;
wenzelm
parents: 19482
diff changeset
   272
19730
8abecd308e60 forall_intr_list: do not ignore errors;
wenzelm
parents: 19523
diff changeset
   273
(*Generalization over a list of variables*)
8abecd308e60 forall_intr_list: do not ignore errors;
wenzelm
parents: 19523
diff changeset
   274
val forall_intr_list = fold_rev forall_intr;
0
a5a9c433f639 Initial revision
clasohm
parents:
diff changeset
   275
a5a9c433f639 Initial revision
clasohm
parents:
diff changeset
   276
(*Generalization over all suitable Free variables*)
a5a9c433f639 Initial revision
clasohm
parents:
diff changeset
   277
fun forall_intr_frees th =
19730
8abecd308e60 forall_intr_list: do not ignore errors;
wenzelm
parents: 19523
diff changeset
   278
    let
26627
dac6d56b7c8d rep_cterm/rep_thm: no longer dereference theory_ref;
wenzelm
parents: 26487
diff changeset
   279
      val thy = Thm.theory_of_thm th;
dac6d56b7c8d rep_cterm/rep_thm: no longer dereference theory_ref;
wenzelm
parents: 26487
diff changeset
   280
      val {prop, hyps, tpairs, ...} = rep_thm th;
19730
8abecd308e60 forall_intr_list: do not ignore errors;
wenzelm
parents: 19523
diff changeset
   281
      val fixed = fold Term.add_frees (Thm.terms_of_tpairs tpairs @ hyps) [];
8abecd308e60 forall_intr_list: do not ignore errors;
wenzelm
parents: 19523
diff changeset
   282
      val frees = Term.fold_aterms (fn Free v =>
8abecd308e60 forall_intr_list: do not ignore errors;
wenzelm
parents: 19523
diff changeset
   283
        if member (op =) fixed v then I else insert (op =) v | _ => I) prop [];
8abecd308e60 forall_intr_list: do not ignore errors;
wenzelm
parents: 19523
diff changeset
   284
    in fold (forall_intr o cterm_of thy o Free) frees th end;
0
a5a9c433f639 Initial revision
clasohm
parents:
diff changeset
   285
18535
84b0597808bb tuned forall_intr_vars;
wenzelm
parents: 18498
diff changeset
   286
(*Generalization over Vars -- canonical order*)
84b0597808bb tuned forall_intr_vars;
wenzelm
parents: 18498
diff changeset
   287
fun forall_intr_vars th =
20298
6915973e88f3 removed obsolete frees/vars_of etc.;
wenzelm
parents: 20260
diff changeset
   288
  fold forall_intr
22695
17073e9b94f2 moved Drule.plain_prop_of, Drule.fold_terms to more_thm.ML;
wenzelm
parents: 22681
diff changeset
   289
    (map (Thm.cterm_of (Thm.theory_of_thm th) o Var) (Thm.fold_terms Term.add_vars th [])) th;
18535
84b0597808bb tuned forall_intr_vars;
wenzelm
parents: 18498
diff changeset
   290
18025
7dac6858168d added incr_indexes;
wenzelm
parents: 17964
diff changeset
   291
fun outer_params t =
20077
4fc9a4fef219 replaced Term.variant(list) by Name.variant(_list);
wenzelm
parents: 19999
diff changeset
   292
  let val vs = Term.strip_all_vars t
4fc9a4fef219 replaced Term.variant(list) by Name.variant(_list);
wenzelm
parents: 19999
diff changeset
   293
  in Name.variant_list [] (map (Name.clean o #1) vs) ~~ map #2 vs end;
18025
7dac6858168d added incr_indexes;
wenzelm
parents: 17964
diff changeset
   294
7dac6858168d added incr_indexes;
wenzelm
parents: 17964
diff changeset
   295
(*generalize outermost parameters*)
7dac6858168d added incr_indexes;
wenzelm
parents: 17964
diff changeset
   296
fun gen_all th =
12719
41e0d086f8b6 improved forall_elim_vars_safe (no longer invents new indexes);
wenzelm
parents: 12710
diff changeset
   297
  let
26627
dac6d56b7c8d rep_cterm/rep_thm: no longer dereference theory_ref;
wenzelm
parents: 26487
diff changeset
   298
    val thy = Thm.theory_of_thm th;
dac6d56b7c8d rep_cterm/rep_thm: no longer dereference theory_ref;
wenzelm
parents: 26487
diff changeset
   299
    val {prop, maxidx, ...} = Thm.rep_thm th;
18025
7dac6858168d added incr_indexes;
wenzelm
parents: 17964
diff changeset
   300
    val cert = Thm.cterm_of thy;
7dac6858168d added incr_indexes;
wenzelm
parents: 17964
diff changeset
   301
    fun elim (x, T) = Thm.forall_elim (cert (Var ((x, maxidx + 1), T)));
7dac6858168d added incr_indexes;
wenzelm
parents: 17964
diff changeset
   302
  in fold elim (outer_params prop) th end;
7dac6858168d added incr_indexes;
wenzelm
parents: 17964
diff changeset
   303
7dac6858168d added incr_indexes;
wenzelm
parents: 17964
diff changeset
   304
(*lift vars wrt. outermost goal parameters
18118
38316c575328 removed impose_hyps, satisfy_hyps;
wenzelm
parents: 18025
diff changeset
   305
  -- reverses the effect of gen_all modulo higher-order unification*)
18025
7dac6858168d added incr_indexes;
wenzelm
parents: 17964
diff changeset
   306
fun lift_all goal th =
7dac6858168d added incr_indexes;
wenzelm
parents: 17964
diff changeset
   307
  let
7dac6858168d added incr_indexes;
wenzelm
parents: 17964
diff changeset
   308
    val thy = Theory.merge (Thm.theory_of_cterm goal, Thm.theory_of_thm th);
7dac6858168d added incr_indexes;
wenzelm
parents: 17964
diff changeset
   309
    val cert = Thm.cterm_of thy;
19421
1051bde222db added equal_elim_rule2;
wenzelm
parents: 19183
diff changeset
   310
    val maxidx = Thm.maxidx_of th;
18025
7dac6858168d added incr_indexes;
wenzelm
parents: 17964
diff changeset
   311
    val ps = outer_params (Thm.term_of goal)
7dac6858168d added incr_indexes;
wenzelm
parents: 17964
diff changeset
   312
      |> map (fn (x, T) => Var ((x, maxidx + 1), Logic.incr_tvar (maxidx + 1) T));
7dac6858168d added incr_indexes;
wenzelm
parents: 17964
diff changeset
   313
    val Ts = map Term.fastype_of ps;
22695
17073e9b94f2 moved Drule.plain_prop_of, Drule.fold_terms to more_thm.ML;
wenzelm
parents: 22681
diff changeset
   314
    val inst = Thm.fold_terms Term.add_vars th [] |> map (fn (xi, T) =>
18025
7dac6858168d added incr_indexes;
wenzelm
parents: 17964
diff changeset
   315
      (cert (Var (xi, T)), cert (Term.list_comb (Var (xi, Ts ---> T), ps))));
7dac6858168d added incr_indexes;
wenzelm
parents: 17964
diff changeset
   316
  in
7dac6858168d added incr_indexes;
wenzelm
parents: 17964
diff changeset
   317
    th |> Thm.instantiate ([], inst)
7dac6858168d added incr_indexes;
wenzelm
parents: 17964
diff changeset
   318
    |> fold_rev (Thm.forall_intr o cert) ps
7dac6858168d added incr_indexes;
wenzelm
parents: 17964
diff changeset
   319
  end;
7dac6858168d added incr_indexes;
wenzelm
parents: 17964
diff changeset
   320
19999
9592df0c3176 added generalize;
wenzelm
parents: 19906
diff changeset
   321
(*direct generalization*)
9592df0c3176 added generalize;
wenzelm
parents: 19906
diff changeset
   322
fun generalize names th = Thm.generalize names (Thm.maxidx_of th + 1) th;
9554
1b0f02abbde8 added forall_elim_vars_safe, norm_hhf_eq;
wenzelm
parents: 9547
diff changeset
   323
16949
ea65d75e0ce1 tuned gen_all, forall_elim_list, implies_intr_list, standard;
wenzelm
parents: 16861
diff changeset
   324
(*specialization over a list of cterms*)
ea65d75e0ce1 tuned gen_all, forall_elim_list, implies_intr_list, standard;
wenzelm
parents: 16861
diff changeset
   325
val forall_elim_list = fold forall_elim;
0
a5a9c433f639 Initial revision
clasohm
parents:
diff changeset
   326
16949
ea65d75e0ce1 tuned gen_all, forall_elim_list, implies_intr_list, standard;
wenzelm
parents: 16861
diff changeset
   327
(*maps A1,...,An |- B  to  [| A1;...;An |] ==> B*)
ea65d75e0ce1 tuned gen_all, forall_elim_list, implies_intr_list, standard;
wenzelm
parents: 16861
diff changeset
   328
val implies_intr_list = fold_rev implies_intr;
0
a5a9c433f639 Initial revision
clasohm
parents:
diff changeset
   329
16949
ea65d75e0ce1 tuned gen_all, forall_elim_list, implies_intr_list, standard;
wenzelm
parents: 16861
diff changeset
   330
(*maps [| A1;...;An |] ==> B and [A1,...,An]  to  B*)
24978
159b0f4dd1e9 moved Drule.unvarify to Thm.unvarify (cf. more_thm.ML);
wenzelm
parents: 24947
diff changeset
   331
fun implies_elim_list impth ths = fold Thm.elim_implies ths impth;
0
a5a9c433f639 Initial revision
clasohm
parents:
diff changeset
   332
a5a9c433f639 Initial revision
clasohm
parents:
diff changeset
   333
(*Reset Var indexes to zero, renaming to preserve distinctness*)
21603
0fa36ea9aaf5 added zero_var_indexes_list;
wenzelm
parents: 21600
diff changeset
   334
fun zero_var_indexes_list [] = []
0fa36ea9aaf5 added zero_var_indexes_list;
wenzelm
parents: 21600
diff changeset
   335
  | zero_var_indexes_list ths =
0fa36ea9aaf5 added zero_var_indexes_list;
wenzelm
parents: 21600
diff changeset
   336
      let
0fa36ea9aaf5 added zero_var_indexes_list;
wenzelm
parents: 21600
diff changeset
   337
        val thy = Theory.merge_list (map Thm.theory_of_thm ths);
0fa36ea9aaf5 added zero_var_indexes_list;
wenzelm
parents: 21600
diff changeset
   338
        val certT = Thm.ctyp_of thy and cert = Thm.cterm_of thy;
0fa36ea9aaf5 added zero_var_indexes_list;
wenzelm
parents: 21600
diff changeset
   339
        val (instT, inst) = TermSubst.zero_var_indexes_inst (map Thm.full_prop_of ths);
0fa36ea9aaf5 added zero_var_indexes_list;
wenzelm
parents: 21600
diff changeset
   340
        val cinstT = map (fn (v, T) => (certT (TVar v), certT T)) instT;
0fa36ea9aaf5 added zero_var_indexes_list;
wenzelm
parents: 21600
diff changeset
   341
        val cinst = map (fn (v, t) => (cert (Var v), cert t)) inst;
0fa36ea9aaf5 added zero_var_indexes_list;
wenzelm
parents: 21600
diff changeset
   342
      in map (Thm.adjust_maxidx_thm ~1 o Thm.instantiate (cinstT, cinst)) ths end;
0fa36ea9aaf5 added zero_var_indexes_list;
wenzelm
parents: 21600
diff changeset
   343
0fa36ea9aaf5 added zero_var_indexes_list;
wenzelm
parents: 21600
diff changeset
   344
val zero_var_indexes = singleton zero_var_indexes_list;
0
a5a9c433f639 Initial revision
clasohm
parents:
diff changeset
   345
a5a9c433f639 Initial revision
clasohm
parents:
diff changeset
   346
14394
51b24127eef2 comments!!
paulson
parents: 14391
diff changeset
   347
(** Standard form of object-rule: no hypotheses, flexflex constraints,
51b24127eef2 comments!!
paulson
parents: 14391
diff changeset
   348
    Frees, or outer quantifiers; all generality expressed by Vars of index 0.**)
10515
8430c8fa8a9f standard: close_derivation;
wenzelm
parents: 10441
diff changeset
   349
16595
e64fb2cf50cb added implies_intr_hyps (from thm.ML);
wenzelm
parents: 16425
diff changeset
   350
(*Discharge all hypotheses.*)
e64fb2cf50cb added implies_intr_hyps (from thm.ML);
wenzelm
parents: 16425
diff changeset
   351
fun implies_intr_hyps th =
e64fb2cf50cb added implies_intr_hyps (from thm.ML);
wenzelm
parents: 16425
diff changeset
   352
  fold Thm.implies_intr (#hyps (Thm.crep_thm th)) th;
e64fb2cf50cb added implies_intr_hyps (from thm.ML);
wenzelm
parents: 16425
diff changeset
   353
14394
51b24127eef2 comments!!
paulson
parents: 14391
diff changeset
   354
(*Squash a theorem's flexflex constraints provided it can be done uniquely.
51b24127eef2 comments!!
paulson
parents: 14391
diff changeset
   355
  This step can lose information.*)
14387
e96d5c42c4b0 Polymorphic treatment of binary arithmetic using axclasses
paulson
parents: 14340
diff changeset
   356
fun flexflex_unique th =
17713
7efbe0ec9d4c Optimized and exported flexflex_unique.
berghofe
parents: 17657
diff changeset
   357
  if null (tpairs_of th) then th else
23439
8c7da8649f2f A more robust flexflex_unique
paulson
parents: 23423
diff changeset
   358
    case distinct Thm.eq_thm (Seq.list_of (flexflex_rule th)) of
8c7da8649f2f A more robust flexflex_unique
paulson
parents: 23423
diff changeset
   359
      [th] => th
8c7da8649f2f A more robust flexflex_unique
paulson
parents: 23423
diff changeset
   360
    | []   => raise THM("flexflex_unique: impossible constraints", 0, [th])
8c7da8649f2f A more robust flexflex_unique
paulson
parents: 23423
diff changeset
   361
    |  _   => raise THM("flexflex_unique: multiple unifiers", 0, [th]);
14387
e96d5c42c4b0 Polymorphic treatment of binary arithmetic using axclasses
paulson
parents: 14340
diff changeset
   362
21603
0fa36ea9aaf5 added zero_var_indexes_list;
wenzelm
parents: 21600
diff changeset
   363
0fa36ea9aaf5 added zero_var_indexes_list;
wenzelm
parents: 21600
diff changeset
   364
(* legacy standard operations *)
0fa36ea9aaf5 added zero_var_indexes_list;
wenzelm
parents: 21600
diff changeset
   365
16949
ea65d75e0ce1 tuned gen_all, forall_elim_list, implies_intr_list, standard;
wenzelm
parents: 16861
diff changeset
   366
val standard' =
ea65d75e0ce1 tuned gen_all, forall_elim_list, implies_intr_list, standard;
wenzelm
parents: 16861
diff changeset
   367
  implies_intr_hyps
ea65d75e0ce1 tuned gen_all, forall_elim_list, implies_intr_list, standard;
wenzelm
parents: 16861
diff changeset
   368
  #> forall_intr_frees
19421
1051bde222db added equal_elim_rule2;
wenzelm
parents: 19183
diff changeset
   369
  #> `Thm.maxidx_of
16949
ea65d75e0ce1 tuned gen_all, forall_elim_list, implies_intr_list, standard;
wenzelm
parents: 16861
diff changeset
   370
  #-> (fn maxidx =>
26653
60e0cf6bef89 Thm.forall_elim_var(s);
wenzelm
parents: 26627
diff changeset
   371
    Thm.forall_elim_vars (maxidx + 1)
20904
363a9cba2953 added dest_equals_lhs;
wenzelm
parents: 20881
diff changeset
   372
    #> Thm.strip_shyps
16949
ea65d75e0ce1 tuned gen_all, forall_elim_list, implies_intr_list, standard;
wenzelm
parents: 16861
diff changeset
   373
    #> zero_var_indexes
26627
dac6d56b7c8d rep_cterm/rep_thm: no longer dereference theory_ref;
wenzelm
parents: 26487
diff changeset
   374
    #> Thm.varifyT);
1218
59ed8ef1a3a1 modified pretty_thm, standard, eq_thm to handle shyps;
wenzelm
parents: 1194
diff changeset
   375
16949
ea65d75e0ce1 tuned gen_all, forall_elim_list, implies_intr_list, standard;
wenzelm
parents: 16861
diff changeset
   376
val standard =
21600
222810ce6b05 *** bad commit -- reverted to previous version ***
wenzelm
parents: 21596
diff changeset
   377
  flexflex_unique
16949
ea65d75e0ce1 tuned gen_all, forall_elim_list, implies_intr_list, standard;
wenzelm
parents: 16861
diff changeset
   378
  #> standard'
26627
dac6d56b7c8d rep_cterm/rep_thm: no longer dereference theory_ref;
wenzelm
parents: 26487
diff changeset
   379
  #> Thm.close_derivation;
11512
da3a96ab5630 Some basic rules are now stored with "open" derivations, to facilitate
berghofe
parents: 11163
diff changeset
   380
0
a5a9c433f639 Initial revision
clasohm
parents:
diff changeset
   381
8328
efbcec3eb02f added freeze_all;
wenzelm
parents: 8129
diff changeset
   382
(*Convert all Vars in a theorem to Frees.  Also return a function for
4610
b1322be47244 Tidying; rotate_prems; moved freeze_thaw from tactic.ML
paulson
parents: 4588
diff changeset
   383
  reversing that operation.  DOES NOT WORK FOR TYPE VARIABLES.
b1322be47244 Tidying; rotate_prems; moved freeze_thaw from tactic.ML
paulson
parents: 4588
diff changeset
   384
  Similar code in type/freeze_thaw*)
15495
50fde6f04e4c new treatment of demodulation in proof reconstruction
paulson
parents: 15442
diff changeset
   385
50fde6f04e4c new treatment of demodulation in proof reconstruction
paulson
parents: 15442
diff changeset
   386
fun freeze_thaw_robust th =
19878
51ae6677dd5f removed weak_eq_thm;
wenzelm
parents: 19861
diff changeset
   387
 let val fth = Thm.freezeT th
26627
dac6d56b7c8d rep_cterm/rep_thm: no longer dereference theory_ref;
wenzelm
parents: 26487
diff changeset
   388
     val thy = Thm.theory_of_thm fth
dac6d56b7c8d rep_cterm/rep_thm: no longer dereference theory_ref;
wenzelm
parents: 26487
diff changeset
   389
     val {prop, tpairs, ...} = rep_thm fth
15495
50fde6f04e4c new treatment of demodulation in proof reconstruction
paulson
parents: 15442
diff changeset
   390
 in
23178
07ba6b58b3d2 simplified/unified list fold;
wenzelm
parents: 22939
diff changeset
   391
   case List.foldr add_term_vars [] (prop :: Thm.terms_of_tpairs tpairs) of
15495
50fde6f04e4c new treatment of demodulation in proof reconstruction
paulson
parents: 15442
diff changeset
   392
       [] => (fth, fn i => fn x => x)   (*No vars: nothing to do!*)
50fde6f04e4c new treatment of demodulation in proof reconstruction
paulson
parents: 15442
diff changeset
   393
     | vars =>
19753
b345d4e70ca9 Tiny code cleanup
paulson
parents: 19730
diff changeset
   394
         let fun newName (Var(ix,_)) = (ix, gensym (string_of_indexname ix))
b345d4e70ca9 Tiny code cleanup
paulson
parents: 19730
diff changeset
   395
             val alist = map newName vars
15495
50fde6f04e4c new treatment of demodulation in proof reconstruction
paulson
parents: 15442
diff changeset
   396
             fun mk_inst (Var(v,T)) =
16425
2427be27cc60 accomodate identification of type Sign.sg and theory;
wenzelm
parents: 15949
diff changeset
   397
                 (cterm_of thy (Var(v,T)),
17325
d9d50222808e introduced new-style AList operations
haftmann
parents: 17203
diff changeset
   398
                  cterm_of thy (Free(((the o AList.lookup (op =) alist) v), T)))
15495
50fde6f04e4c new treatment of demodulation in proof reconstruction
paulson
parents: 15442
diff changeset
   399
             val insts = map mk_inst vars
50fde6f04e4c new treatment of demodulation in proof reconstruction
paulson
parents: 15442
diff changeset
   400
             fun thaw i th' = (*i is non-negative increment for Var indexes*)
50fde6f04e4c new treatment of demodulation in proof reconstruction
paulson
parents: 15442
diff changeset
   401
                 th' |> forall_intr_list (map #2 insts)
22906
195b7515911a moved some operations to more_thm.ML and conv.ML;
wenzelm
parents: 22695
diff changeset
   402
                     |> forall_elim_list (map (Thm.incr_indexes_cterm i o #1) insts)
15495
50fde6f04e4c new treatment of demodulation in proof reconstruction
paulson
parents: 15442
diff changeset
   403
         in  (Thm.instantiate ([],insts) fth, thaw)  end
50fde6f04e4c new treatment of demodulation in proof reconstruction
paulson
parents: 15442
diff changeset
   404
 end;
50fde6f04e4c new treatment of demodulation in proof reconstruction
paulson
parents: 15442
diff changeset
   405
50fde6f04e4c new treatment of demodulation in proof reconstruction
paulson
parents: 15442
diff changeset
   406
(*Basic version of the function above. No option to rename Vars apart in thaw.
19999
9592df0c3176 added generalize;
wenzelm
parents: 19906
diff changeset
   407
  The Frees created from Vars have nice names. FIXME: does not check for
19753
b345d4e70ca9 Tiny code cleanup
paulson
parents: 19730
diff changeset
   408
  clashes with variables in the assumptions, so delete and use freeze_thaw_robust instead?*)
4610
b1322be47244 Tidying; rotate_prems; moved freeze_thaw from tactic.ML
paulson
parents: 4588
diff changeset
   409
fun freeze_thaw th =
19878
51ae6677dd5f removed weak_eq_thm;
wenzelm
parents: 19861
diff changeset
   410
 let val fth = Thm.freezeT th
26627
dac6d56b7c8d rep_cterm/rep_thm: no longer dereference theory_ref;
wenzelm
parents: 26487
diff changeset
   411
     val thy = Thm.theory_of_thm fth
dac6d56b7c8d rep_cterm/rep_thm: no longer dereference theory_ref;
wenzelm
parents: 26487
diff changeset
   412
     val {prop, tpairs, ...} = rep_thm fth
7248
322151fe6f02 new primitive rule permute_prems to underlie defer_tac and rotate_prems
paulson
parents: 6995
diff changeset
   413
 in
23178
07ba6b58b3d2 simplified/unified list fold;
wenzelm
parents: 22939
diff changeset
   414
   case List.foldr add_term_vars [] (prop :: Thm.terms_of_tpairs tpairs) of
7248
322151fe6f02 new primitive rule permute_prems to underlie defer_tac and rotate_prems
paulson
parents: 6995
diff changeset
   415
       [] => (fth, fn x => x)
322151fe6f02 new primitive rule permute_prems to underlie defer_tac and rotate_prems
paulson
parents: 6995
diff changeset
   416
     | vars =>
8328
efbcec3eb02f added freeze_all;
wenzelm
parents: 8129
diff changeset
   417
         let fun newName (Var(ix,_), (pairs,used)) =
20077
4fc9a4fef219 replaced Term.variant(list) by Name.variant(_list);
wenzelm
parents: 19999
diff changeset
   418
                   let val v = Name.variant used (string_of_indexname ix)
8328
efbcec3eb02f added freeze_all;
wenzelm
parents: 8129
diff changeset
   419
                   in  ((ix,v)::pairs, v::used)  end;
23178
07ba6b58b3d2 simplified/unified list fold;
wenzelm
parents: 22939
diff changeset
   420
             val (alist, _) = List.foldr newName ([], Library.foldr add_term_names
15574
b1d1b5bfc464 Removed practically all references to Library.foldr.
skalberg
parents: 15570
diff changeset
   421
               (prop :: Thm.terms_of_tpairs tpairs, [])) vars
8328
efbcec3eb02f added freeze_all;
wenzelm
parents: 8129
diff changeset
   422
             fun mk_inst (Var(v,T)) =
16425
2427be27cc60 accomodate identification of type Sign.sg and theory;
wenzelm
parents: 15949
diff changeset
   423
                 (cterm_of thy (Var(v,T)),
17325
d9d50222808e introduced new-style AList operations
haftmann
parents: 17203
diff changeset
   424
                  cterm_of thy (Free(((the o AList.lookup (op =) alist) v), T)))
8328
efbcec3eb02f added freeze_all;
wenzelm
parents: 8129
diff changeset
   425
             val insts = map mk_inst vars
efbcec3eb02f added freeze_all;
wenzelm
parents: 8129
diff changeset
   426
             fun thaw th' =
efbcec3eb02f added freeze_all;
wenzelm
parents: 8129
diff changeset
   427
                 th' |> forall_intr_list (map #2 insts)
efbcec3eb02f added freeze_all;
wenzelm
parents: 8129
diff changeset
   428
                     |> forall_elim_list (map #1 insts)
efbcec3eb02f added freeze_all;
wenzelm
parents: 8129
diff changeset
   429
         in  (Thm.instantiate ([],insts) fth, thaw)  end
7248
322151fe6f02 new primitive rule permute_prems to underlie defer_tac and rotate_prems
paulson
parents: 6995
diff changeset
   430
 end;
4610
b1322be47244 Tidying; rotate_prems; moved freeze_thaw from tactic.ML
paulson
parents: 4588
diff changeset
   431
7248
322151fe6f02 new primitive rule permute_prems to underlie defer_tac and rotate_prems
paulson
parents: 6995
diff changeset
   432
(*Rotates a rule's premises to the left by k*)
23537
ecf487dce798 tuned rotate_prems;
wenzelm
parents: 23439
diff changeset
   433
fun rotate_prems 0 = I
ecf487dce798 tuned rotate_prems;
wenzelm
parents: 23439
diff changeset
   434
  | rotate_prems k = permute_prems 0 k;
ecf487dce798 tuned rotate_prems;
wenzelm
parents: 23439
diff changeset
   435
23423
b2d64f86d21b added with_subgoal;
wenzelm
parents: 23178
diff changeset
   436
fun with_subgoal i f = rotate_prems (i - 1) #> f #> rotate_prems (1 - i);
4610
b1322be47244 Tidying; rotate_prems; moved freeze_thaw from tactic.ML
paulson
parents: 4588
diff changeset
   437
11163
14732e3eaa6e added rearrange_prems
oheimb
parents: 11120
diff changeset
   438
(* permute prems, where the i-th position in the argument list (counting from 0)
14732e3eaa6e added rearrange_prems
oheimb
parents: 11120
diff changeset
   439
   gives the position within the original thm to be transferred to position i.
14732e3eaa6e added rearrange_prems
oheimb
parents: 11120
diff changeset
   440
   Any remaining trailing positions are left unchanged. *)
14732e3eaa6e added rearrange_prems
oheimb
parents: 11120
diff changeset
   441
val rearrange_prems = let
14732e3eaa6e added rearrange_prems
oheimb
parents: 11120
diff changeset
   442
  fun rearr new []      thm = thm
11815
ef7619398680 added implies_intr_goals;
wenzelm
parents: 11741
diff changeset
   443
  |   rearr new (p::ps) thm = rearr (new+1)
11163
14732e3eaa6e added rearrange_prems
oheimb
parents: 11120
diff changeset
   444
     (map (fn q => if new<=q andalso q<p then q+1 else q) ps)
14732e3eaa6e added rearrange_prems
oheimb
parents: 11120
diff changeset
   445
     (permute_prems (new+1) (new-p) (permute_prems new (p-new) thm))
14732e3eaa6e added rearrange_prems
oheimb
parents: 11120
diff changeset
   446
  in rearr 0 end;
4610
b1322be47244 Tidying; rotate_prems; moved freeze_thaw from tactic.ML
paulson
parents: 4588
diff changeset
   447
252
7532f95d7f44 removed eq_sg, pprint_sg, print_sg (now in sign.ML);
wenzelm
parents: 229
diff changeset
   448
(*Resolution: exactly one resolvent must be produced.*)
0
a5a9c433f639 Initial revision
clasohm
parents:
diff changeset
   449
fun tha RSN (i,thb) =
19861
620d90091788 tuned Seq/Envir/Unify interfaces;
wenzelm
parents: 19842
diff changeset
   450
  case Seq.chop 2 (biresolution false [(false,tha)] i thb) of
0
a5a9c433f639 Initial revision
clasohm
parents:
diff changeset
   451
      ([th],_) => th
a5a9c433f639 Initial revision
clasohm
parents:
diff changeset
   452
    | ([],_)   => raise THM("RSN: no unifiers", i, [tha,thb])
a5a9c433f639 Initial revision
clasohm
parents:
diff changeset
   453
    |      _   => raise THM("RSN: multiple unifiers", i, [tha,thb]);
a5a9c433f639 Initial revision
clasohm
parents:
diff changeset
   454
a5a9c433f639 Initial revision
clasohm
parents:
diff changeset
   455
(*resolution: P==>Q, Q==>R gives P==>R. *)
a5a9c433f639 Initial revision
clasohm
parents:
diff changeset
   456
fun tha RS thb = tha RSN (1,thb);
a5a9c433f639 Initial revision
clasohm
parents:
diff changeset
   457
a5a9c433f639 Initial revision
clasohm
parents:
diff changeset
   458
(*For joining lists of rules*)
252
7532f95d7f44 removed eq_sg, pprint_sg, print_sg (now in sign.ML);
wenzelm
parents: 229
diff changeset
   459
fun thas RLN (i,thbs) =
0
a5a9c433f639 Initial revision
clasohm
parents:
diff changeset
   460
  let val resolve = biresolution false (map (pair false) thas) i
4270
957c887b89b5 changed Sequence interface (now Seq, in seq.ML);
wenzelm
parents: 4057
diff changeset
   461
      fun resb thb = Seq.list_of (resolve thb) handle THM _ => []
19482
9f11af8f7ef9 tuned basic list operators (flat, maps, map_filter);
wenzelm
parents: 19421
diff changeset
   462
  in maps resb thbs end;
0
a5a9c433f639 Initial revision
clasohm
parents:
diff changeset
   463
a5a9c433f639 Initial revision
clasohm
parents:
diff changeset
   464
fun thas RL thbs = thas RLN (1,thbs);
a5a9c433f639 Initial revision
clasohm
parents:
diff changeset
   465
11
d0e17c42dbb4 Added MRS, MRL from ZF/ROOT.ML. These support forward proof, resolving a
lcp
parents: 0
diff changeset
   466
(*Resolve a list of rules against bottom_rl from right to left;
d0e17c42dbb4 Added MRS, MRL from ZF/ROOT.ML. These support forward proof, resolving a
lcp
parents: 0
diff changeset
   467
  makes proof trees*)
252
7532f95d7f44 removed eq_sg, pprint_sg, print_sg (now in sign.ML);
wenzelm
parents: 229
diff changeset
   468
fun rls MRS bottom_rl =
11
d0e17c42dbb4 Added MRS, MRL from ZF/ROOT.ML. These support forward proof, resolving a
lcp
parents: 0
diff changeset
   469
  let fun rs_aux i [] = bottom_rl
252
7532f95d7f44 removed eq_sg, pprint_sg, print_sg (now in sign.ML);
wenzelm
parents: 229
diff changeset
   470
        | rs_aux i (rl::rls) = rl RSN (i, rs_aux (i+1) rls)
11
d0e17c42dbb4 Added MRS, MRL from ZF/ROOT.ML. These support forward proof, resolving a
lcp
parents: 0
diff changeset
   471
  in  rs_aux 1 rls  end;
d0e17c42dbb4 Added MRS, MRL from ZF/ROOT.ML. These support forward proof, resolving a
lcp
parents: 0
diff changeset
   472
d0e17c42dbb4 Added MRS, MRL from ZF/ROOT.ML. These support forward proof, resolving a
lcp
parents: 0
diff changeset
   473
(*As above, but for rule lists*)
252
7532f95d7f44 removed eq_sg, pprint_sg, print_sg (now in sign.ML);
wenzelm
parents: 229
diff changeset
   474
fun rlss MRL bottom_rls =
11
d0e17c42dbb4 Added MRS, MRL from ZF/ROOT.ML. These support forward proof, resolving a
lcp
parents: 0
diff changeset
   475
  let fun rs_aux i [] = bottom_rls
252
7532f95d7f44 removed eq_sg, pprint_sg, print_sg (now in sign.ML);
wenzelm
parents: 229
diff changeset
   476
        | rs_aux i (rls::rlss) = rls RLN (i, rs_aux (i+1) rlss)
11
d0e17c42dbb4 Added MRS, MRL from ZF/ROOT.ML. These support forward proof, resolving a
lcp
parents: 0
diff changeset
   477
  in  rs_aux 1 rlss  end;
d0e17c42dbb4 Added MRS, MRL from ZF/ROOT.ML. These support forward proof, resolving a
lcp
parents: 0
diff changeset
   478
9288
06a55195741b infix 'OF' is a version of 'MRS' with more appropriate argument order;
wenzelm
parents: 8605
diff changeset
   479
(*A version of MRS with more appropriate argument order*)
06a55195741b infix 'OF' is a version of 'MRS' with more appropriate argument order;
wenzelm
parents: 8605
diff changeset
   480
fun bottom_rl OF rls = rls MRS bottom_rl;
06a55195741b infix 'OF' is a version of 'MRS' with more appropriate argument order;
wenzelm
parents: 8605
diff changeset
   481
252
7532f95d7f44 removed eq_sg, pprint_sg, print_sg (now in sign.ML);
wenzelm
parents: 229
diff changeset
   482
(*compose Q and [...,Qi,Q(i+1),...]==>R to [...,Q(i+1),...]==>R
0
a5a9c433f639 Initial revision
clasohm
parents:
diff changeset
   483
  with no lifting or renaming!  Q may contain ==> or meta-quants
a5a9c433f639 Initial revision
clasohm
parents:
diff changeset
   484
  ALWAYS deletes premise i *)
252
7532f95d7f44 removed eq_sg, pprint_sg, print_sg (now in sign.ML);
wenzelm
parents: 229
diff changeset
   485
fun compose(tha,i,thb) =
24426
d89e409cfe4e new derived rule: incr_type_indexes
paulson
parents: 24241
diff changeset
   486
    distinct Thm.eq_thm (Seq.list_of (bicompose false (false,tha,0) i thb));
0
a5a9c433f639 Initial revision
clasohm
parents:
diff changeset
   487
6946
309276732ee1 added compose_single;
wenzelm
parents: 6930
diff changeset
   488
fun compose_single (tha,i,thb) =
24426
d89e409cfe4e new derived rule: incr_type_indexes
paulson
parents: 24241
diff changeset
   489
  case compose (tha,i,thb) of
6946
309276732ee1 added compose_single;
wenzelm
parents: 6930
diff changeset
   490
    [th] => th
24426
d89e409cfe4e new derived rule: incr_type_indexes
paulson
parents: 24241
diff changeset
   491
  | _ => raise THM ("compose: unique result expected", i, [tha,thb]);
6946
309276732ee1 added compose_single;
wenzelm
parents: 6930
diff changeset
   492
0
a5a9c433f639 Initial revision
clasohm
parents:
diff changeset
   493
(*compose Q and [Q1,Q2,...,Qk]==>R to [Q2,...,Qk]==>R getting unique result*)
a5a9c433f639 Initial revision
clasohm
parents:
diff changeset
   494
fun tha COMP thb =
24426
d89e409cfe4e new derived rule: incr_type_indexes
paulson
parents: 24241
diff changeset
   495
    case compose(tha,1,thb) of
252
7532f95d7f44 removed eq_sg, pprint_sg, print_sg (now in sign.ML);
wenzelm
parents: 229
diff changeset
   496
        [th] => th
0
a5a9c433f639 Initial revision
clasohm
parents:
diff changeset
   497
      | _ =>   raise THM("COMP", 1, [tha,thb]);
a5a9c433f639 Initial revision
clasohm
parents:
diff changeset
   498
13105
3d1e7a199bdc use eq_thm_prop instead of slightly inadequate eq_thm;
wenzelm
parents: 12908
diff changeset
   499
4016
90aebb69c04e eq_thm moved to thm.ML;
wenzelm
parents: 3991
diff changeset
   500
(** theorem equality **)
0
a5a9c433f639 Initial revision
clasohm
parents:
diff changeset
   501
a5a9c433f639 Initial revision
clasohm
parents:
diff changeset
   502
(*Useful "distance" function for BEST_FIRST*)
16720
0c6c67e74391 Thm.full_prop_of;
wenzelm
parents: 16682
diff changeset
   503
val size_of_thm = size_of_term o Thm.full_prop_of;
0
a5a9c433f639 Initial revision
clasohm
parents:
diff changeset
   504
1194
563ecd14c1d8 Added weak_eq_thm and forall_intr_vars (thanks to Mark Staples)
lcp
parents: 952
diff changeset
   505
563ecd14c1d8 Added weak_eq_thm and forall_intr_vars (thanks to Mark Staples)
lcp
parents: 952
diff changeset
   506
0
a5a9c433f639 Initial revision
clasohm
parents:
diff changeset
   507
(*** Meta-Rewriting Rules ***)
a5a9c433f639 Initial revision
clasohm
parents:
diff changeset
   508
26487
49850ac120e3 certify wrt. dynamic context;
wenzelm
parents: 26424
diff changeset
   509
val read_prop = certify o SimpleSyntax.read_prop;
49850ac120e3 certify wrt. dynamic context;
wenzelm
parents: 26424
diff changeset
   510
49850ac120e3 certify wrt. dynamic context;
wenzelm
parents: 26424
diff changeset
   511
fun store_thm name th =
49850ac120e3 certify wrt. dynamic context;
wenzelm
parents: 26424
diff changeset
   512
  Context.>>> (Context.map_theory_result (PureThy.store_thm (name, th)));
4610
b1322be47244 Tidying; rotate_prems; moved freeze_thaw from tactic.ML
paulson
parents: 4588
diff changeset
   513
26487
49850ac120e3 certify wrt. dynamic context;
wenzelm
parents: 26424
diff changeset
   514
fun store_thm_open name th =
49850ac120e3 certify wrt. dynamic context;
wenzelm
parents: 26424
diff changeset
   515
  Context.>>> (Context.map_theory_result (PureThy.store_thm_open (name, th)));
49850ac120e3 certify wrt. dynamic context;
wenzelm
parents: 26424
diff changeset
   516
49850ac120e3 certify wrt. dynamic context;
wenzelm
parents: 26424
diff changeset
   517
fun store_standard_thm name th = store_thm name (standard th);
12135
e370e5d469c2 added conj_elim_precise, conj_intr_thm;
wenzelm
parents: 12126
diff changeset
   518
fun store_standard_thm_open name thm = store_thm_open name (standard' thm);
4016
90aebb69c04e eq_thm moved to thm.ML;
wenzelm
parents: 3991
diff changeset
   519
0
a5a9c433f639 Initial revision
clasohm
parents:
diff changeset
   520
val reflexive_thm =
26487
49850ac120e3 certify wrt. dynamic context;
wenzelm
parents: 26424
diff changeset
   521
  let val cx = certify (Var(("x",0),TVar(("'a",0),[])))
12135
e370e5d469c2 added conj_elim_precise, conj_intr_thm;
wenzelm
parents: 12126
diff changeset
   522
  in store_standard_thm_open "reflexive" (Thm.reflexive cx) end;
0
a5a9c433f639 Initial revision
clasohm
parents:
diff changeset
   523
a5a9c433f639 Initial revision
clasohm
parents:
diff changeset
   524
val symmetric_thm =
24241
424cb8b5e5b4 SimpleSyntax.read_prop;
wenzelm
parents: 24048
diff changeset
   525
  let val xy = read_prop "x::'a == y::'a"
16595
e64fb2cf50cb added implies_intr_hyps (from thm.ML);
wenzelm
parents: 16425
diff changeset
   526
  in store_standard_thm_open "symmetric" (Thm.implies_intr xy (Thm.symmetric (Thm.assume xy))) end;
0
a5a9c433f639 Initial revision
clasohm
parents:
diff changeset
   527
a5a9c433f639 Initial revision
clasohm
parents:
diff changeset
   528
val transitive_thm =
24241
424cb8b5e5b4 SimpleSyntax.read_prop;
wenzelm
parents: 24048
diff changeset
   529
  let val xy = read_prop "x::'a == y::'a"
424cb8b5e5b4 SimpleSyntax.read_prop;
wenzelm
parents: 24048
diff changeset
   530
      val yz = read_prop "y::'a == z::'a"
0
a5a9c433f639 Initial revision
clasohm
parents:
diff changeset
   531
      val xythm = Thm.assume xy and yzthm = Thm.assume yz
12135
e370e5d469c2 added conj_elim_precise, conj_intr_thm;
wenzelm
parents: 12126
diff changeset
   532
  in store_standard_thm_open "transitive" (Thm.implies_intr yz (Thm.transitive xythm yzthm)) end;
0
a5a9c433f639 Initial revision
clasohm
parents:
diff changeset
   533
4679
24917efb31b5 Reorganized simplifier. May now reorient rules.
nipkow
parents: 4610
diff changeset
   534
fun symmetric_fun thm = thm RS symmetric_thm;
24917efb31b5 Reorganized simplifier. May now reorient rules.
nipkow
parents: 4610
diff changeset
   535
11512
da3a96ab5630 Some basic rules are now stored with "open" derivations, to facilitate
berghofe
parents: 11163
diff changeset
   536
fun extensional eq =
da3a96ab5630 Some basic rules are now stored with "open" derivations, to facilitate
berghofe
parents: 11163
diff changeset
   537
  let val eq' =
22906
195b7515911a moved some operations to more_thm.ML and conv.ML;
wenzelm
parents: 22695
diff changeset
   538
    abstract_rule "x" (Thm.dest_arg (fst (Thm.dest_equals (cprop_of eq)))) eq
11512
da3a96ab5630 Some basic rules are now stored with "open" derivations, to facilitate
berghofe
parents: 11163
diff changeset
   539
  in equal_elim (eta_conversion (cprop_of eq')) eq' end;
da3a96ab5630 Some basic rules are now stored with "open" derivations, to facilitate
berghofe
parents: 11163
diff changeset
   540
18820
24dcd5b0e26b added equals_cong;
wenzelm
parents: 18799
diff changeset
   541
val equals_cong =
24241
424cb8b5e5b4 SimpleSyntax.read_prop;
wenzelm
parents: 24048
diff changeset
   542
  store_standard_thm_open "equals_cong" (Thm.reflexive (read_prop "x::'a == y::'a"));
18820
24dcd5b0e26b added equals_cong;
wenzelm
parents: 18799
diff changeset
   543
10414
f7aeff3e9e1e - new theorems imp_cong and swap_prems_eq
berghofe
parents: 10403
diff changeset
   544
val imp_cong =
f7aeff3e9e1e - new theorems imp_cong and swap_prems_eq
berghofe
parents: 10403
diff changeset
   545
  let
24241
424cb8b5e5b4 SimpleSyntax.read_prop;
wenzelm
parents: 24048
diff changeset
   546
    val ABC = read_prop "A ==> B::prop == C::prop"
424cb8b5e5b4 SimpleSyntax.read_prop;
wenzelm
parents: 24048
diff changeset
   547
    val AB = read_prop "A ==> B"
424cb8b5e5b4 SimpleSyntax.read_prop;
wenzelm
parents: 24048
diff changeset
   548
    val AC = read_prop "A ==> C"
424cb8b5e5b4 SimpleSyntax.read_prop;
wenzelm
parents: 24048
diff changeset
   549
    val A = read_prop "A"
10414
f7aeff3e9e1e - new theorems imp_cong and swap_prems_eq
berghofe
parents: 10403
diff changeset
   550
  in
12135
e370e5d469c2 added conj_elim_precise, conj_intr_thm;
wenzelm
parents: 12126
diff changeset
   551
    store_standard_thm_open "imp_cong" (implies_intr ABC (equal_intr
10414
f7aeff3e9e1e - new theorems imp_cong and swap_prems_eq
berghofe
parents: 10403
diff changeset
   552
      (implies_intr AB (implies_intr A
f7aeff3e9e1e - new theorems imp_cong and swap_prems_eq
berghofe
parents: 10403
diff changeset
   553
        (equal_elim (implies_elim (assume ABC) (assume A))
f7aeff3e9e1e - new theorems imp_cong and swap_prems_eq
berghofe
parents: 10403
diff changeset
   554
          (implies_elim (assume AB) (assume A)))))
f7aeff3e9e1e - new theorems imp_cong and swap_prems_eq
berghofe
parents: 10403
diff changeset
   555
      (implies_intr AC (implies_intr A
f7aeff3e9e1e - new theorems imp_cong and swap_prems_eq
berghofe
parents: 10403
diff changeset
   556
        (equal_elim (symmetric (implies_elim (assume ABC) (assume A)))
f7aeff3e9e1e - new theorems imp_cong and swap_prems_eq
berghofe
parents: 10403
diff changeset
   557
          (implies_elim (assume AC) (assume A)))))))
f7aeff3e9e1e - new theorems imp_cong and swap_prems_eq
berghofe
parents: 10403
diff changeset
   558
  end;
f7aeff3e9e1e - new theorems imp_cong and swap_prems_eq
berghofe
parents: 10403
diff changeset
   559
f7aeff3e9e1e - new theorems imp_cong and swap_prems_eq
berghofe
parents: 10403
diff changeset
   560
val swap_prems_eq =
f7aeff3e9e1e - new theorems imp_cong and swap_prems_eq
berghofe
parents: 10403
diff changeset
   561
  let
24241
424cb8b5e5b4 SimpleSyntax.read_prop;
wenzelm
parents: 24048
diff changeset
   562
    val ABC = read_prop "A ==> B ==> C"
424cb8b5e5b4 SimpleSyntax.read_prop;
wenzelm
parents: 24048
diff changeset
   563
    val BAC = read_prop "B ==> A ==> C"
424cb8b5e5b4 SimpleSyntax.read_prop;
wenzelm
parents: 24048
diff changeset
   564
    val A = read_prop "A"
424cb8b5e5b4 SimpleSyntax.read_prop;
wenzelm
parents: 24048
diff changeset
   565
    val B = read_prop "B"
10414
f7aeff3e9e1e - new theorems imp_cong and swap_prems_eq
berghofe
parents: 10403
diff changeset
   566
  in
12135
e370e5d469c2 added conj_elim_precise, conj_intr_thm;
wenzelm
parents: 12126
diff changeset
   567
    store_standard_thm_open "swap_prems_eq" (equal_intr
10414
f7aeff3e9e1e - new theorems imp_cong and swap_prems_eq
berghofe
parents: 10403
diff changeset
   568
      (implies_intr ABC (implies_intr B (implies_intr A
f7aeff3e9e1e - new theorems imp_cong and swap_prems_eq
berghofe
parents: 10403
diff changeset
   569
        (implies_elim (implies_elim (assume ABC) (assume A)) (assume B)))))
f7aeff3e9e1e - new theorems imp_cong and swap_prems_eq
berghofe
parents: 10403
diff changeset
   570
      (implies_intr BAC (implies_intr A (implies_intr B
f7aeff3e9e1e - new theorems imp_cong and swap_prems_eq
berghofe
parents: 10403
diff changeset
   571
        (implies_elim (implies_elim (assume BAC) (assume B)) (assume A))))))
f7aeff3e9e1e - new theorems imp_cong and swap_prems_eq
berghofe
parents: 10403
diff changeset
   572
  end;
229
4002c4cd450c Pure: MAJOR CHANGE. Moved ML types ctyp and cterm and their associated
lcp
parents: 214
diff changeset
   573
22938
454f1678bf5f added fun/arg_cong_rule;
wenzelm
parents: 22906
diff changeset
   574
val imp_cong_rule = Thm.combination o Thm.combination (Thm.reflexive implies);
454f1678bf5f added fun/arg_cong_rule;
wenzelm
parents: 22906
diff changeset
   575
23537
ecf487dce798 tuned rotate_prems;
wenzelm
parents: 23439
diff changeset
   576
fun arg_cong_rule ct th = Thm.combination (Thm.reflexive ct) th;    (*AP_TERM in LCF/HOL*)
ecf487dce798 tuned rotate_prems;
wenzelm
parents: 23439
diff changeset
   577
fun fun_cong_rule th ct = Thm.combination th (Thm.reflexive ct);    (*AP_THM in LCF/HOL*)
23568
afecdba16452 added binop_cong_rule;
wenzelm
parents: 23537
diff changeset
   578
fun binop_cong_rule ct th1 th2 = Thm.combination (arg_cong_rule ct th1) th2;
0
a5a9c433f639 Initial revision
clasohm
parents:
diff changeset
   579
15001
fb2141a9f8c0 Moved conversion rules from MetaSimplifier to Drule. refl_implies removed
skalberg
parents: 14854
diff changeset
   580
local
22906
195b7515911a moved some operations to more_thm.ML and conv.ML;
wenzelm
parents: 22695
diff changeset
   581
  val dest_eq = Thm.dest_equals o cprop_of
15001
fb2141a9f8c0 Moved conversion rules from MetaSimplifier to Drule. refl_implies removed
skalberg
parents: 14854
diff changeset
   582
  val rhs_of = snd o dest_eq
fb2141a9f8c0 Moved conversion rules from MetaSimplifier to Drule. refl_implies removed
skalberg
parents: 14854
diff changeset
   583
in
fb2141a9f8c0 Moved conversion rules from MetaSimplifier to Drule. refl_implies removed
skalberg
parents: 14854
diff changeset
   584
fun beta_eta_conversion t =
fb2141a9f8c0 Moved conversion rules from MetaSimplifier to Drule. refl_implies removed
skalberg
parents: 14854
diff changeset
   585
  let val thm = beta_conversion true t
fb2141a9f8c0 Moved conversion rules from MetaSimplifier to Drule. refl_implies removed
skalberg
parents: 14854
diff changeset
   586
  in transitive thm (eta_conversion (rhs_of thm)) end
fb2141a9f8c0 Moved conversion rules from MetaSimplifier to Drule. refl_implies removed
skalberg
parents: 14854
diff changeset
   587
end;
fb2141a9f8c0 Moved conversion rules from MetaSimplifier to Drule. refl_implies removed
skalberg
parents: 14854
diff changeset
   588
15925
f13f4694c36d Added eta_long_conversion.
berghofe
parents: 15875
diff changeset
   589
fun eta_long_conversion ct = transitive (beta_eta_conversion ct)
f13f4694c36d Added eta_long_conversion.
berghofe
parents: 15875
diff changeset
   590
  (symmetric (beta_eta_conversion (cterm_fun (Pattern.eta_long []) ct)));
f13f4694c36d Added eta_long_conversion.
berghofe
parents: 15875
diff changeset
   591
20861
fd0e33caeb3b a few new functions on thms and cterms
paulson
parents: 20669
diff changeset
   592
(*Contract all eta-redexes in the theorem, lest they give rise to needless abstractions*)
fd0e33caeb3b a few new functions on thms and cterms
paulson
parents: 20669
diff changeset
   593
fun eta_contraction_rule th =
fd0e33caeb3b a few new functions on thms and cterms
paulson
parents: 20669
diff changeset
   594
  equal_elim (eta_conversion (cprop_of th)) th;
fd0e33caeb3b a few new functions on thms and cterms
paulson
parents: 20669
diff changeset
   595
24947
b7e990e1706a improved abs_def: only abstract over outermost (unique) Vars;
wenzelm
parents: 24848
diff changeset
   596
b7e990e1706a improved abs_def: only abstract over outermost (unique) Vars;
wenzelm
parents: 24848
diff changeset
   597
(* abs_def *)
b7e990e1706a improved abs_def: only abstract over outermost (unique) Vars;
wenzelm
parents: 24848
diff changeset
   598
b7e990e1706a improved abs_def: only abstract over outermost (unique) Vars;
wenzelm
parents: 24848
diff changeset
   599
(*
b7e990e1706a improved abs_def: only abstract over outermost (unique) Vars;
wenzelm
parents: 24848
diff changeset
   600
   f ?x1 ... ?xn == u
b7e990e1706a improved abs_def: only abstract over outermost (unique) Vars;
wenzelm
parents: 24848
diff changeset
   601
  --------------------
b7e990e1706a improved abs_def: only abstract over outermost (unique) Vars;
wenzelm
parents: 24848
diff changeset
   602
   f == %x1 ... xn. u
b7e990e1706a improved abs_def: only abstract over outermost (unique) Vars;
wenzelm
parents: 24848
diff changeset
   603
*)
b7e990e1706a improved abs_def: only abstract over outermost (unique) Vars;
wenzelm
parents: 24848
diff changeset
   604
b7e990e1706a improved abs_def: only abstract over outermost (unique) Vars;
wenzelm
parents: 24848
diff changeset
   605
local
b7e990e1706a improved abs_def: only abstract over outermost (unique) Vars;
wenzelm
parents: 24848
diff changeset
   606
b7e990e1706a improved abs_def: only abstract over outermost (unique) Vars;
wenzelm
parents: 24848
diff changeset
   607
fun contract_lhs th =
b7e990e1706a improved abs_def: only abstract over outermost (unique) Vars;
wenzelm
parents: 24848
diff changeset
   608
  Thm.transitive (Thm.symmetric (beta_eta_conversion
b7e990e1706a improved abs_def: only abstract over outermost (unique) Vars;
wenzelm
parents: 24848
diff changeset
   609
    (fst (Thm.dest_equals (cprop_of th))))) th;
b7e990e1706a improved abs_def: only abstract over outermost (unique) Vars;
wenzelm
parents: 24848
diff changeset
   610
b7e990e1706a improved abs_def: only abstract over outermost (unique) Vars;
wenzelm
parents: 24848
diff changeset
   611
fun var_args ct =
b7e990e1706a improved abs_def: only abstract over outermost (unique) Vars;
wenzelm
parents: 24848
diff changeset
   612
  (case try Thm.dest_comb ct of
b7e990e1706a improved abs_def: only abstract over outermost (unique) Vars;
wenzelm
parents: 24848
diff changeset
   613
    SOME (f, arg) =>
b7e990e1706a improved abs_def: only abstract over outermost (unique) Vars;
wenzelm
parents: 24848
diff changeset
   614
      (case Thm.term_of arg of
b7e990e1706a improved abs_def: only abstract over outermost (unique) Vars;
wenzelm
parents: 24848
diff changeset
   615
        Var ((x, _), _) => update (eq_snd (op aconvc)) (x, arg) (var_args f)
b7e990e1706a improved abs_def: only abstract over outermost (unique) Vars;
wenzelm
parents: 24848
diff changeset
   616
      | _ => [])
b7e990e1706a improved abs_def: only abstract over outermost (unique) Vars;
wenzelm
parents: 24848
diff changeset
   617
  | NONE => []);
b7e990e1706a improved abs_def: only abstract over outermost (unique) Vars;
wenzelm
parents: 24848
diff changeset
   618
b7e990e1706a improved abs_def: only abstract over outermost (unique) Vars;
wenzelm
parents: 24848
diff changeset
   619
in
b7e990e1706a improved abs_def: only abstract over outermost (unique) Vars;
wenzelm
parents: 24848
diff changeset
   620
b7e990e1706a improved abs_def: only abstract over outermost (unique) Vars;
wenzelm
parents: 24848
diff changeset
   621
fun abs_def th =
18337
5d24dbd5e93d abs_def: beta/eta contract lhs;
wenzelm
parents: 18251
diff changeset
   622
  let
24947
b7e990e1706a improved abs_def: only abstract over outermost (unique) Vars;
wenzelm
parents: 24848
diff changeset
   623
    val th' = contract_lhs th;
b7e990e1706a improved abs_def: only abstract over outermost (unique) Vars;
wenzelm
parents: 24848
diff changeset
   624
    val args = var_args (Thm.lhs_of th');
b7e990e1706a improved abs_def: only abstract over outermost (unique) Vars;
wenzelm
parents: 24848
diff changeset
   625
  in contract_lhs (fold (uncurry Thm.abstract_rule) args th') end;
b7e990e1706a improved abs_def: only abstract over outermost (unique) Vars;
wenzelm
parents: 24848
diff changeset
   626
b7e990e1706a improved abs_def: only abstract over outermost (unique) Vars;
wenzelm
parents: 24848
diff changeset
   627
end;
b7e990e1706a improved abs_def: only abstract over outermost (unique) Vars;
wenzelm
parents: 24848
diff changeset
   628
18337
5d24dbd5e93d abs_def: beta/eta contract lhs;
wenzelm
parents: 18251
diff changeset
   629
18468
43951ffb6304 fixed has_internal;
wenzelm
parents: 18375
diff changeset
   630
15669
2b1f1902505d added add_used; include tpairs;
wenzelm
parents: 15574
diff changeset
   631
(*** Some useful meta-theorems ***)
0
a5a9c433f639 Initial revision
clasohm
parents:
diff changeset
   632
a5a9c433f639 Initial revision
clasohm
parents:
diff changeset
   633
(*The rule V/V, obtains assumption solving for eresolve_tac*)
24241
424cb8b5e5b4 SimpleSyntax.read_prop;
wenzelm
parents: 24048
diff changeset
   634
val asm_rl = store_standard_thm_open "asm_rl" (Thm.trivial (read_prop "?psi"));
7380
2bcee6a460d8 thm "_" = asm_rl;
wenzelm
parents: 7248
diff changeset
   635
val _ = store_thm "_" asm_rl;
0
a5a9c433f639 Initial revision
clasohm
parents:
diff changeset
   636
a5a9c433f639 Initial revision
clasohm
parents:
diff changeset
   637
(*Meta-level cut rule: [| V==>W; V |] ==> W *)
4016
90aebb69c04e eq_thm moved to thm.ML;
wenzelm
parents: 3991
diff changeset
   638
val cut_rl =
12135
e370e5d469c2 added conj_elim_precise, conj_intr_thm;
wenzelm
parents: 12126
diff changeset
   639
  store_standard_thm_open "cut_rl"
24241
424cb8b5e5b4 SimpleSyntax.read_prop;
wenzelm
parents: 24048
diff changeset
   640
    (Thm.trivial (read_prop "?psi ==> ?theta"));
0
a5a9c433f639 Initial revision
clasohm
parents:
diff changeset
   641
252
7532f95d7f44 removed eq_sg, pprint_sg, print_sg (now in sign.ML);
wenzelm
parents: 229
diff changeset
   642
(*Generalized elim rule for one conclusion; cut_rl with reversed premises:
0
a5a9c433f639 Initial revision
clasohm
parents:
diff changeset
   643
     [| PROP V;  PROP V ==> PROP W |] ==> PROP W *)
a5a9c433f639 Initial revision
clasohm
parents:
diff changeset
   644
val revcut_rl =
24241
424cb8b5e5b4 SimpleSyntax.read_prop;
wenzelm
parents: 24048
diff changeset
   645
  let val V = read_prop "V"
424cb8b5e5b4 SimpleSyntax.read_prop;
wenzelm
parents: 24048
diff changeset
   646
      and VW = read_prop "V ==> W";
4016
90aebb69c04e eq_thm moved to thm.ML;
wenzelm
parents: 3991
diff changeset
   647
  in
12135
e370e5d469c2 added conj_elim_precise, conj_intr_thm;
wenzelm
parents: 12126
diff changeset
   648
    store_standard_thm_open "revcut_rl"
4016
90aebb69c04e eq_thm moved to thm.ML;
wenzelm
parents: 3991
diff changeset
   649
      (implies_intr V (implies_intr VW (implies_elim (assume VW) (assume V))))
0
a5a9c433f639 Initial revision
clasohm
parents:
diff changeset
   650
  end;
a5a9c433f639 Initial revision
clasohm
parents:
diff changeset
   651
668
0d0923eb0f0d Pure/drule/thin_rl: new
lcp
parents: 655
diff changeset
   652
(*for deleting an unwanted assumption*)
0d0923eb0f0d Pure/drule/thin_rl: new
lcp
parents: 655
diff changeset
   653
val thin_rl =
24241
424cb8b5e5b4 SimpleSyntax.read_prop;
wenzelm
parents: 24048
diff changeset
   654
  let val V = read_prop "V"
424cb8b5e5b4 SimpleSyntax.read_prop;
wenzelm
parents: 24048
diff changeset
   655
      and W = read_prop "W";
12135
e370e5d469c2 added conj_elim_precise, conj_intr_thm;
wenzelm
parents: 12126
diff changeset
   656
  in store_standard_thm_open "thin_rl" (implies_intr V (implies_intr W (assume W))) end;
668
0d0923eb0f0d Pure/drule/thin_rl: new
lcp
parents: 655
diff changeset
   657
0
a5a9c433f639 Initial revision
clasohm
parents:
diff changeset
   658
(* (!!x. PROP ?V) == PROP ?V       Allows removal of redundant parameters*)
a5a9c433f639 Initial revision
clasohm
parents:
diff changeset
   659
val triv_forall_equality =
24241
424cb8b5e5b4 SimpleSyntax.read_prop;
wenzelm
parents: 24048
diff changeset
   660
  let val V  = read_prop "V"
424cb8b5e5b4 SimpleSyntax.read_prop;
wenzelm
parents: 24048
diff changeset
   661
      and QV = read_prop "!!x::'a. V"
26487
49850ac120e3 certify wrt. dynamic context;
wenzelm
parents: 26424
diff changeset
   662
      and x  = certify (Free ("x", Term.aT []));
4016
90aebb69c04e eq_thm moved to thm.ML;
wenzelm
parents: 3991
diff changeset
   663
  in
12135
e370e5d469c2 added conj_elim_precise, conj_intr_thm;
wenzelm
parents: 12126
diff changeset
   664
    store_standard_thm_open "triv_forall_equality"
11512
da3a96ab5630 Some basic rules are now stored with "open" derivations, to facilitate
berghofe
parents: 11163
diff changeset
   665
      (equal_intr (implies_intr QV (forall_elim x (assume QV)))
da3a96ab5630 Some basic rules are now stored with "open" derivations, to facilitate
berghofe
parents: 11163
diff changeset
   666
        (implies_intr V  (forall_intr x (assume V))))
0
a5a9c433f639 Initial revision
clasohm
parents:
diff changeset
   667
  end;
a5a9c433f639 Initial revision
clasohm
parents:
diff changeset
   668
19051
5212516f1a98 added distinct_prems_rl;
wenzelm
parents: 18929
diff changeset
   669
(* (PROP ?Phi ==> PROP ?Phi ==> PROP ?Psi) ==>
5212516f1a98 added distinct_prems_rl;
wenzelm
parents: 18929
diff changeset
   670
   (PROP ?Phi ==> PROP ?Psi)
5212516f1a98 added distinct_prems_rl;
wenzelm
parents: 18929
diff changeset
   671
*)
5212516f1a98 added distinct_prems_rl;
wenzelm
parents: 18929
diff changeset
   672
val distinct_prems_rl =
5212516f1a98 added distinct_prems_rl;
wenzelm
parents: 18929
diff changeset
   673
  let
24241
424cb8b5e5b4 SimpleSyntax.read_prop;
wenzelm
parents: 24048
diff changeset
   674
    val AAB = read_prop "Phi ==> Phi ==> Psi"
424cb8b5e5b4 SimpleSyntax.read_prop;
wenzelm
parents: 24048
diff changeset
   675
    val A = read_prop "Phi";
19051
5212516f1a98 added distinct_prems_rl;
wenzelm
parents: 18929
diff changeset
   676
  in
5212516f1a98 added distinct_prems_rl;
wenzelm
parents: 18929
diff changeset
   677
    store_standard_thm_open "distinct_prems_rl"
5212516f1a98 added distinct_prems_rl;
wenzelm
parents: 18929
diff changeset
   678
      (implies_intr_list [AAB, A] (implies_elim_list (assume AAB) [assume A, assume A]))
5212516f1a98 added distinct_prems_rl;
wenzelm
parents: 18929
diff changeset
   679
  end;
5212516f1a98 added distinct_prems_rl;
wenzelm
parents: 18929
diff changeset
   680
1756
978ee7ededdd Added swap_prems_rl
nipkow
parents: 1703
diff changeset
   681
(* (PROP ?PhiA ==> PROP ?PhiB ==> PROP ?Psi) ==>
978ee7ededdd Added swap_prems_rl
nipkow
parents: 1703
diff changeset
   682
   (PROP ?PhiB ==> PROP ?PhiA ==> PROP ?Psi)
978ee7ededdd Added swap_prems_rl
nipkow
parents: 1703
diff changeset
   683
   `thm COMP swap_prems_rl' swaps the first two premises of `thm'
978ee7ededdd Added swap_prems_rl
nipkow
parents: 1703
diff changeset
   684
*)
978ee7ededdd Added swap_prems_rl
nipkow
parents: 1703
diff changeset
   685
val swap_prems_rl =
24241
424cb8b5e5b4 SimpleSyntax.read_prop;
wenzelm
parents: 24048
diff changeset
   686
  let val cmajor = read_prop "PhiA ==> PhiB ==> Psi";
1756
978ee7ededdd Added swap_prems_rl
nipkow
parents: 1703
diff changeset
   687
      val major = assume cmajor;
24241
424cb8b5e5b4 SimpleSyntax.read_prop;
wenzelm
parents: 24048
diff changeset
   688
      val cminor1 = read_prop "PhiA";
1756
978ee7ededdd Added swap_prems_rl
nipkow
parents: 1703
diff changeset
   689
      val minor1 = assume cminor1;
24241
424cb8b5e5b4 SimpleSyntax.read_prop;
wenzelm
parents: 24048
diff changeset
   690
      val cminor2 = read_prop "PhiB";
1756
978ee7ededdd Added swap_prems_rl
nipkow
parents: 1703
diff changeset
   691
      val minor2 = assume cminor2;
12135
e370e5d469c2 added conj_elim_precise, conj_intr_thm;
wenzelm
parents: 12126
diff changeset
   692
  in store_standard_thm_open "swap_prems_rl"
1756
978ee7ededdd Added swap_prems_rl
nipkow
parents: 1703
diff changeset
   693
       (implies_intr cmajor (implies_intr cminor2 (implies_intr cminor1
978ee7ededdd Added swap_prems_rl
nipkow
parents: 1703
diff changeset
   694
         (implies_elim (implies_elim major minor1) minor2))))
978ee7ededdd Added swap_prems_rl
nipkow
parents: 1703
diff changeset
   695
  end;
978ee7ededdd Added swap_prems_rl
nipkow
parents: 1703
diff changeset
   696
3653
6d5b3d5ff132 Added Larry's equal_intr_rule
nipkow
parents: 3575
diff changeset
   697
(* [| PROP ?phi ==> PROP ?psi; PROP ?psi ==> PROP ?phi |]
6d5b3d5ff132 Added Larry's equal_intr_rule
nipkow
parents: 3575
diff changeset
   698
   ==> PROP ?phi == PROP ?psi
8328
efbcec3eb02f added freeze_all;
wenzelm
parents: 8129
diff changeset
   699
   Introduction rule for == as a meta-theorem.
3653
6d5b3d5ff132 Added Larry's equal_intr_rule
nipkow
parents: 3575
diff changeset
   700
*)
6d5b3d5ff132 Added Larry's equal_intr_rule
nipkow
parents: 3575
diff changeset
   701
val equal_intr_rule =
24241
424cb8b5e5b4 SimpleSyntax.read_prop;
wenzelm
parents: 24048
diff changeset
   702
  let val PQ = read_prop "phi ==> psi"
424cb8b5e5b4 SimpleSyntax.read_prop;
wenzelm
parents: 24048
diff changeset
   703
      and QP = read_prop "psi ==> phi"
4016
90aebb69c04e eq_thm moved to thm.ML;
wenzelm
parents: 3991
diff changeset
   704
  in
12135
e370e5d469c2 added conj_elim_precise, conj_intr_thm;
wenzelm
parents: 12126
diff changeset
   705
    store_standard_thm_open "equal_intr_rule"
4016
90aebb69c04e eq_thm moved to thm.ML;
wenzelm
parents: 3991
diff changeset
   706
      (implies_intr PQ (implies_intr QP (equal_intr (assume PQ) (assume QP))))
3653
6d5b3d5ff132 Added Larry's equal_intr_rule
nipkow
parents: 3575
diff changeset
   707
  end;
6d5b3d5ff132 Added Larry's equal_intr_rule
nipkow
parents: 3575
diff changeset
   708
19421
1051bde222db added equal_elim_rule2;
wenzelm
parents: 19183
diff changeset
   709
(* PROP ?phi == PROP ?psi ==> PROP ?phi ==> PROP ?psi *)
13368
8f8ba32d148b added equal_elim_rule1;
wenzelm
parents: 13325
diff changeset
   710
val equal_elim_rule1 =
24241
424cb8b5e5b4 SimpleSyntax.read_prop;
wenzelm
parents: 24048
diff changeset
   711
  let val eq = read_prop "phi::prop == psi::prop"
424cb8b5e5b4 SimpleSyntax.read_prop;
wenzelm
parents: 24048
diff changeset
   712
      and P = read_prop "phi"
13368
8f8ba32d148b added equal_elim_rule1;
wenzelm
parents: 13325
diff changeset
   713
  in store_standard_thm_open "equal_elim_rule1"
8f8ba32d148b added equal_elim_rule1;
wenzelm
parents: 13325
diff changeset
   714
    (Thm.equal_elim (assume eq) (assume P) |> implies_intr_list [eq, P])
8f8ba32d148b added equal_elim_rule1;
wenzelm
parents: 13325
diff changeset
   715
  end;
4285
05af145a61d4 cleaned signature;
wenzelm
parents: 4281
diff changeset
   716
19421
1051bde222db added equal_elim_rule2;
wenzelm
parents: 19183
diff changeset
   717
(* PROP ?psi == PROP ?phi ==> PROP ?phi ==> PROP ?psi *)
1051bde222db added equal_elim_rule2;
wenzelm
parents: 19183
diff changeset
   718
val equal_elim_rule2 =
1051bde222db added equal_elim_rule2;
wenzelm
parents: 19183
diff changeset
   719
  store_standard_thm_open "equal_elim_rule2" (symmetric_thm RS equal_elim_rule1);
1051bde222db added equal_elim_rule2;
wenzelm
parents: 19183
diff changeset
   720
12297
2ce7b42b0a64 added remdups_rl;
wenzelm
parents: 12283
diff changeset
   721
(* "[| PROP ?phi; PROP ?phi; PROP ?psi |] ==> PROP ?psi" *)
2ce7b42b0a64 added remdups_rl;
wenzelm
parents: 12283
diff changeset
   722
val remdups_rl =
24241
424cb8b5e5b4 SimpleSyntax.read_prop;
wenzelm
parents: 24048
diff changeset
   723
  let val P = read_prop "phi" and Q = read_prop "psi";
12297
2ce7b42b0a64 added remdups_rl;
wenzelm
parents: 12283
diff changeset
   724
  in store_standard_thm_open "remdups_rl" (implies_intr_list [P, P, Q] (Thm.assume Q)) end;
2ce7b42b0a64 added remdups_rl;
wenzelm
parents: 12283
diff changeset
   725
2ce7b42b0a64 added remdups_rl;
wenzelm
parents: 12283
diff changeset
   726
9554
1b0f02abbde8 added forall_elim_vars_safe, norm_hhf_eq;
wenzelm
parents: 9547
diff changeset
   727
(*(PROP ?phi ==> (!!x. PROP ?psi(x))) == (!!x. PROP ?phi ==> PROP ?psi(x))
12297
2ce7b42b0a64 added remdups_rl;
wenzelm
parents: 12283
diff changeset
   728
  Rewrite rule for HHF normalization.*)
9554
1b0f02abbde8 added forall_elim_vars_safe, norm_hhf_eq;
wenzelm
parents: 9547
diff changeset
   729
1b0f02abbde8 added forall_elim_vars_safe, norm_hhf_eq;
wenzelm
parents: 9547
diff changeset
   730
val norm_hhf_eq =
1b0f02abbde8 added forall_elim_vars_safe, norm_hhf_eq;
wenzelm
parents: 9547
diff changeset
   731
  let
14854
61bdf2ae4dc5 removed obsolete sort 'logic';
wenzelm
parents: 14824
diff changeset
   732
    val aT = TFree ("'a", []);
9554
1b0f02abbde8 added forall_elim_vars_safe, norm_hhf_eq;
wenzelm
parents: 9547
diff changeset
   733
    val all = Term.all aT;
1b0f02abbde8 added forall_elim_vars_safe, norm_hhf_eq;
wenzelm
parents: 9547
diff changeset
   734
    val x = Free ("x", aT);
1b0f02abbde8 added forall_elim_vars_safe, norm_hhf_eq;
wenzelm
parents: 9547
diff changeset
   735
    val phi = Free ("phi", propT);
1b0f02abbde8 added forall_elim_vars_safe, norm_hhf_eq;
wenzelm
parents: 9547
diff changeset
   736
    val psi = Free ("psi", aT --> propT);
1b0f02abbde8 added forall_elim_vars_safe, norm_hhf_eq;
wenzelm
parents: 9547
diff changeset
   737
26487
49850ac120e3 certify wrt. dynamic context;
wenzelm
parents: 26424
diff changeset
   738
    val cx = certify x;
49850ac120e3 certify wrt. dynamic context;
wenzelm
parents: 26424
diff changeset
   739
    val cphi = certify phi;
49850ac120e3 certify wrt. dynamic context;
wenzelm
parents: 26424
diff changeset
   740
    val lhs = certify (Logic.mk_implies (phi, all $ Abs ("x", aT, psi $ Bound 0)));
49850ac120e3 certify wrt. dynamic context;
wenzelm
parents: 26424
diff changeset
   741
    val rhs = certify (all $ Abs ("x", aT, Logic.mk_implies (phi, psi $ Bound 0)));
9554
1b0f02abbde8 added forall_elim_vars_safe, norm_hhf_eq;
wenzelm
parents: 9547
diff changeset
   742
  in
1b0f02abbde8 added forall_elim_vars_safe, norm_hhf_eq;
wenzelm
parents: 9547
diff changeset
   743
    Thm.equal_intr
1b0f02abbde8 added forall_elim_vars_safe, norm_hhf_eq;
wenzelm
parents: 9547
diff changeset
   744
      (Thm.implies_elim (Thm.assume lhs) (Thm.assume cphi)
1b0f02abbde8 added forall_elim_vars_safe, norm_hhf_eq;
wenzelm
parents: 9547
diff changeset
   745
        |> Thm.forall_elim cx
1b0f02abbde8 added forall_elim_vars_safe, norm_hhf_eq;
wenzelm
parents: 9547
diff changeset
   746
        |> Thm.implies_intr cphi
1b0f02abbde8 added forall_elim_vars_safe, norm_hhf_eq;
wenzelm
parents: 9547
diff changeset
   747
        |> Thm.forall_intr cx
1b0f02abbde8 added forall_elim_vars_safe, norm_hhf_eq;
wenzelm
parents: 9547
diff changeset
   748
        |> Thm.implies_intr lhs)
1b0f02abbde8 added forall_elim_vars_safe, norm_hhf_eq;
wenzelm
parents: 9547
diff changeset
   749
      (Thm.implies_elim
1b0f02abbde8 added forall_elim_vars_safe, norm_hhf_eq;
wenzelm
parents: 9547
diff changeset
   750
          (Thm.assume rhs |> Thm.forall_elim cx) (Thm.assume cphi)
1b0f02abbde8 added forall_elim_vars_safe, norm_hhf_eq;
wenzelm
parents: 9547
diff changeset
   751
        |> Thm.forall_intr cx
1b0f02abbde8 added forall_elim_vars_safe, norm_hhf_eq;
wenzelm
parents: 9547
diff changeset
   752
        |> Thm.implies_intr cphi
1b0f02abbde8 added forall_elim_vars_safe, norm_hhf_eq;
wenzelm
parents: 9547
diff changeset
   753
        |> Thm.implies_intr rhs)
12135
e370e5d469c2 added conj_elim_precise, conj_intr_thm;
wenzelm
parents: 12126
diff changeset
   754
    |> store_standard_thm_open "norm_hhf_eq"
9554
1b0f02abbde8 added forall_elim_vars_safe, norm_hhf_eq;
wenzelm
parents: 9547
diff changeset
   755
  end;
1b0f02abbde8 added forall_elim_vars_safe, norm_hhf_eq;
wenzelm
parents: 9547
diff changeset
   756
18179
cf4b265007bf added protect_cong, cong_mono_thm;
wenzelm
parents: 18129
diff changeset
   757
val norm_hhf_prop = Logic.dest_equals (Thm.prop_of norm_hhf_eq);
cf4b265007bf added protect_cong, cong_mono_thm;
wenzelm
parents: 18129
diff changeset
   758
12800
abcf9fd6ee65 added is_norm_hhf (from logic.ML);
wenzelm
parents: 12756
diff changeset
   759
fun is_norm_hhf tm =
abcf9fd6ee65 added is_norm_hhf (from logic.ML);
wenzelm
parents: 12756
diff changeset
   760
  let
abcf9fd6ee65 added is_norm_hhf (from logic.ML);
wenzelm
parents: 12756
diff changeset
   761
    fun is_norm (Const ("==>", _) $ _ $ (Const ("all", _) $ _)) = false
abcf9fd6ee65 added is_norm_hhf (from logic.ML);
wenzelm
parents: 12756
diff changeset
   762
      | is_norm (t $ u) = is_norm t andalso is_norm u
abcf9fd6ee65 added is_norm_hhf (from logic.ML);
wenzelm
parents: 12756
diff changeset
   763
      | is_norm (Abs (_, _, t)) = is_norm t
abcf9fd6ee65 added is_norm_hhf (from logic.ML);
wenzelm
parents: 12756
diff changeset
   764
      | is_norm _ = true;
18929
d81435108688 Envir.(beta_)eta_contract;
wenzelm
parents: 18922
diff changeset
   765
  in is_norm (Envir.beta_eta_contract tm) end;
12800
abcf9fd6ee65 added is_norm_hhf (from logic.ML);
wenzelm
parents: 12756
diff changeset
   766
16425
2427be27cc60 accomodate identification of type Sign.sg and theory;
wenzelm
parents: 15949
diff changeset
   767
fun norm_hhf thy t =
12800
abcf9fd6ee65 added is_norm_hhf (from logic.ML);
wenzelm
parents: 12756
diff changeset
   768
  if is_norm_hhf t then t
18179
cf4b265007bf added protect_cong, cong_mono_thm;
wenzelm
parents: 18129
diff changeset
   769
  else Pattern.rewrite_term thy [norm_hhf_prop] [] t;
cf4b265007bf added protect_cong, cong_mono_thm;
wenzelm
parents: 18129
diff changeset
   770
20298
6915973e88f3 removed obsolete frees/vars_of etc.;
wenzelm
parents: 20260
diff changeset
   771
fun norm_hhf_cterm ct =
6915973e88f3 removed obsolete frees/vars_of etc.;
wenzelm
parents: 20260
diff changeset
   772
  if is_norm_hhf (Thm.term_of ct) then ct
6915973e88f3 removed obsolete frees/vars_of etc.;
wenzelm
parents: 20260
diff changeset
   773
  else cterm_fun (Pattern.rewrite_term (Thm.theory_of_cterm ct) [norm_hhf_prop] []) ct;
6915973e88f3 removed obsolete frees/vars_of etc.;
wenzelm
parents: 20260
diff changeset
   774
12800
abcf9fd6ee65 added is_norm_hhf (from logic.ML);
wenzelm
parents: 12756
diff changeset
   775
21603
0fa36ea9aaf5 added zero_var_indexes_list;
wenzelm
parents: 21600
diff changeset
   776
(* var indexes *)
0fa36ea9aaf5 added zero_var_indexes_list;
wenzelm
parents: 21600
diff changeset
   777
24426
d89e409cfe4e new derived rule: incr_type_indexes
paulson
parents: 24241
diff changeset
   778
(*Increment the indexes of only the type variables*)
d89e409cfe4e new derived rule: incr_type_indexes
paulson
parents: 24241
diff changeset
   779
fun incr_type_indexes inc th =
d89e409cfe4e new derived rule: incr_type_indexes
paulson
parents: 24241
diff changeset
   780
  let val tvs = term_tvars (prop_of th)
d89e409cfe4e new derived rule: incr_type_indexes
paulson
parents: 24241
diff changeset
   781
      and thy = theory_of_thm th
d89e409cfe4e new derived rule: incr_type_indexes
paulson
parents: 24241
diff changeset
   782
      fun inc_tvar ((a,i),s) = pairself (ctyp_of thy) (TVar ((a,i),s), TVar ((a,i+inc),s))
d89e409cfe4e new derived rule: incr_type_indexes
paulson
parents: 24241
diff changeset
   783
  in Thm.instantiate (map inc_tvar tvs, []) th end;
d89e409cfe4e new derived rule: incr_type_indexes
paulson
parents: 24241
diff changeset
   784
21603
0fa36ea9aaf5 added zero_var_indexes_list;
wenzelm
parents: 21600
diff changeset
   785
fun incr_indexes th = Thm.incr_indexes (Thm.maxidx_of th + 1);
0fa36ea9aaf5 added zero_var_indexes_list;
wenzelm
parents: 21600
diff changeset
   786
0fa36ea9aaf5 added zero_var_indexes_list;
wenzelm
parents: 21600
diff changeset
   787
fun incr_indexes2 th1 th2 =
0fa36ea9aaf5 added zero_var_indexes_list;
wenzelm
parents: 21600
diff changeset
   788
  Thm.incr_indexes (Int.max (Thm.maxidx_of th1, Thm.maxidx_of th2) + 1);
0fa36ea9aaf5 added zero_var_indexes_list;
wenzelm
parents: 21600
diff changeset
   789
0fa36ea9aaf5 added zero_var_indexes_list;
wenzelm
parents: 21600
diff changeset
   790
fun th1 INCR_COMP th2 = incr_indexes th2 th1 COMP th2;
0fa36ea9aaf5 added zero_var_indexes_list;
wenzelm
parents: 21600
diff changeset
   791
fun th1 COMP_INCR th2 = th1 COMP incr_indexes th1 th2;
0fa36ea9aaf5 added zero_var_indexes_list;
wenzelm
parents: 21600
diff changeset
   792
9554
1b0f02abbde8 added forall_elim_vars_safe, norm_hhf_eq;
wenzelm
parents: 9547
diff changeset
   793
16425
2427be27cc60 accomodate identification of type Sign.sg and theory;
wenzelm
parents: 15949
diff changeset
   794
(*** Instantiate theorem th, reading instantiations in theory thy ****)
8129
29e239c7b8c2 Thm.instantiate no longer normalizes, but Drule.instantiate does
paulson
parents: 8086
diff changeset
   795
29e239c7b8c2 Thm.instantiate no longer normalizes, but Drule.instantiate does
paulson
parents: 8086
diff changeset
   796
(*Version that normalizes the result: Thm.instantiate no longer does that*)
21603
0fa36ea9aaf5 added zero_var_indexes_list;
wenzelm
parents: 21600
diff changeset
   797
fun instantiate instpair th =
0fa36ea9aaf5 added zero_var_indexes_list;
wenzelm
parents: 21600
diff changeset
   798
  Thm.adjust_maxidx_thm ~1 (Thm.instantiate instpair th COMP_INCR asm_rl);
8129
29e239c7b8c2 Thm.instantiate no longer normalizes, but Drule.instantiate does
paulson
parents: 8086
diff changeset
   799
16425
2427be27cc60 accomodate identification of type Sign.sg and theory;
wenzelm
parents: 15949
diff changeset
   800
fun read_instantiate_sg' thy sinsts th =
8129
29e239c7b8c2 Thm.instantiate no longer normalizes, but Drule.instantiate does
paulson
parents: 8086
diff changeset
   801
    let val ts = types_sorts th;
15669
2b1f1902505d added add_used; include tpairs;
wenzelm
parents: 15574
diff changeset
   802
        val used = add_used th [];
16425
2427be27cc60 accomodate identification of type Sign.sg and theory;
wenzelm
parents: 15949
diff changeset
   803
    in  instantiate (read_insts thy ts ts used sinsts) th  end;
15797
a63605582573 - Eliminated nodup_vars check.
berghofe
parents: 15669
diff changeset
   804
16425
2427be27cc60 accomodate identification of type Sign.sg and theory;
wenzelm
parents: 15949
diff changeset
   805
fun read_instantiate_sg thy sinsts th =
20298
6915973e88f3 removed obsolete frees/vars_of etc.;
wenzelm
parents: 20260
diff changeset
   806
  read_instantiate_sg' thy (map (apfst Syntax.read_indexname) sinsts) th;
8129
29e239c7b8c2 Thm.instantiate no longer normalizes, but Drule.instantiate does
paulson
parents: 8086
diff changeset
   807
29e239c7b8c2 Thm.instantiate no longer normalizes, but Drule.instantiate does
paulson
parents: 8086
diff changeset
   808
(*Instantiate theorem th, reading instantiations under theory of th*)
29e239c7b8c2 Thm.instantiate no longer normalizes, but Drule.instantiate does
paulson
parents: 8086
diff changeset
   809
fun read_instantiate sinsts th =
16425
2427be27cc60 accomodate identification of type Sign.sg and theory;
wenzelm
parents: 15949
diff changeset
   810
    read_instantiate_sg (Thm.theory_of_thm th) sinsts th;
8129
29e239c7b8c2 Thm.instantiate no longer normalizes, but Drule.instantiate does
paulson
parents: 8086
diff changeset
   811
15797
a63605582573 - Eliminated nodup_vars check.
berghofe
parents: 15669
diff changeset
   812
fun read_instantiate' sinsts th =
16425
2427be27cc60 accomodate identification of type Sign.sg and theory;
wenzelm
parents: 15949
diff changeset
   813
    read_instantiate_sg' (Thm.theory_of_thm th) sinsts th;
15797
a63605582573 - Eliminated nodup_vars check.
berghofe
parents: 15669
diff changeset
   814
8129
29e239c7b8c2 Thm.instantiate no longer normalizes, but Drule.instantiate does
paulson
parents: 8086
diff changeset
   815
29e239c7b8c2 Thm.instantiate no longer normalizes, but Drule.instantiate does
paulson
parents: 8086
diff changeset
   816
(*Left-to-right replacements: tpairs = [...,(vi,ti),...].
29e239c7b8c2 Thm.instantiate no longer normalizes, but Drule.instantiate does
paulson
parents: 8086
diff changeset
   817
  Instantiates distinct Vars by terms, inferring type instantiations. *)
29e239c7b8c2 Thm.instantiate no longer normalizes, but Drule.instantiate does
paulson
parents: 8086
diff changeset
   818
local
16425
2427be27cc60 accomodate identification of type Sign.sg and theory;
wenzelm
parents: 15949
diff changeset
   819
  fun add_types ((ct,cu), (thy,tye,maxidx)) =
26627
dac6d56b7c8d rep_cterm/rep_thm: no longer dereference theory_ref;
wenzelm
parents: 26487
diff changeset
   820
    let
dac6d56b7c8d rep_cterm/rep_thm: no longer dereference theory_ref;
wenzelm
parents: 26487
diff changeset
   821
        val thyt = Thm.theory_of_cterm ct;
dac6d56b7c8d rep_cterm/rep_thm: no longer dereference theory_ref;
wenzelm
parents: 26487
diff changeset
   822
        val thyu = Thm.theory_of_cterm cu;
dac6d56b7c8d rep_cterm/rep_thm: no longer dereference theory_ref;
wenzelm
parents: 26487
diff changeset
   823
        val {t, T, maxidx = maxt, ...} = Thm.rep_cterm ct;
dac6d56b7c8d rep_cterm/rep_thm: no longer dereference theory_ref;
wenzelm
parents: 26487
diff changeset
   824
        val {t = u, T = U, maxidx = maxu, ...} = Thm.rep_cterm cu;
8129
29e239c7b8c2 Thm.instantiate no longer normalizes, but Drule.instantiate does
paulson
parents: 8086
diff changeset
   825
        val maxi = Int.max(maxidx, Int.max(maxt, maxu));
16425
2427be27cc60 accomodate identification of type Sign.sg and theory;
wenzelm
parents: 15949
diff changeset
   826
        val thy' = Theory.merge(thy, Theory.merge(thyt, thyu))
16949
ea65d75e0ce1 tuned gen_all, forall_elim_list, implies_intr_list, standard;
wenzelm
parents: 16861
diff changeset
   827
        val (tye',maxi') = Sign.typ_unify thy' (T, U) (tye, maxi)
25470
ba5a2bb7a81a Better error messages for cterm_instantiate.
berghofe
parents: 24978
diff changeset
   828
          handle Type.TUNIFY => raise TYPE ("Ill-typed instantiation:\nType\n" ^
26939
1035c89b4c02 moved global pretty/string_of functions from Sign to Syntax;
wenzelm
parents: 26653
diff changeset
   829
            Syntax.string_of_typ_global thy' (Envir.norm_type tye T) ^
25470
ba5a2bb7a81a Better error messages for cterm_instantiate.
berghofe
parents: 24978
diff changeset
   830
            "\nof variable " ^
26939
1035c89b4c02 moved global pretty/string_of functions from Sign to Syntax;
wenzelm
parents: 26653
diff changeset
   831
            Syntax.string_of_term_global thy' (Term.map_types (Envir.norm_type tye) t) ^
25470
ba5a2bb7a81a Better error messages for cterm_instantiate.
berghofe
parents: 24978
diff changeset
   832
            "\ncannot be unified with type\n" ^
26939
1035c89b4c02 moved global pretty/string_of functions from Sign to Syntax;
wenzelm
parents: 26653
diff changeset
   833
            Syntax.string_of_typ_global thy' (Envir.norm_type tye U) ^ "\nof term " ^
1035c89b4c02 moved global pretty/string_of functions from Sign to Syntax;
wenzelm
parents: 26653
diff changeset
   834
            Syntax.string_of_term_global thy' (Term.map_types (Envir.norm_type tye) u),
25470
ba5a2bb7a81a Better error messages for cterm_instantiate.
berghofe
parents: 24978
diff changeset
   835
            [T, U], [t, u])
16425
2427be27cc60 accomodate identification of type Sign.sg and theory;
wenzelm
parents: 15949
diff changeset
   836
    in  (thy', tye', maxi')  end;
8129
29e239c7b8c2 Thm.instantiate no longer normalizes, but Drule.instantiate does
paulson
parents: 8086
diff changeset
   837
in
22561
705d4fb9e628 optimizing the null instantiation case
paulson
parents: 22360
diff changeset
   838
fun cterm_instantiate [] th = th
705d4fb9e628 optimizing the null instantiation case
paulson
parents: 22360
diff changeset
   839
  | cterm_instantiate ctpairs0 th =
23178
07ba6b58b3d2 simplified/unified list fold;
wenzelm
parents: 22939
diff changeset
   840
  let val (thy,tye,_) = List.foldr add_types (Thm.theory_of_thm th, Vartab.empty, 0) ctpairs0
18179
cf4b265007bf added protect_cong, cong_mono_thm;
wenzelm
parents: 18129
diff changeset
   841
      fun instT(ct,cu) =
22287
9985a79735c7 cterm_instantiate was calling a type instantiation function that works only for matching,
paulson
parents: 22109
diff changeset
   842
        let val inst = cterm_of thy o Term.map_types (Envir.norm_type tye) o term_of
14340
bc93ffa674cc correction to cterm_instantiate by Christoph Leuth
paulson
parents: 14081
diff changeset
   843
        in (inst ct, inst cu) end
22307
bb31094b4879 Completing the bug fix from the previous update: the result of unifying type
paulson
parents: 22287
diff changeset
   844
      fun ctyp2 (ixn, (S, T)) = (ctyp_of thy (TVar (ixn, S)), ctyp_of thy (Envir.norm_type tye T))
8406
a217b0cd304d Type.unify and Type.typ_match now use Vartab instead of association lists.
berghofe
parents: 8365
diff changeset
   845
  in  instantiate (map ctyp2 (Vartab.dest tye), map instT ctpairs0) th  end
8129
29e239c7b8c2 Thm.instantiate no longer normalizes, but Drule.instantiate does
paulson
parents: 8086
diff changeset
   846
  handle TERM _ =>
16425
2427be27cc60 accomodate identification of type Sign.sg and theory;
wenzelm
parents: 15949
diff changeset
   847
           raise THM("cterm_instantiate: incompatible theories",0,[th])
8129
29e239c7b8c2 Thm.instantiate no longer normalizes, but Drule.instantiate does
paulson
parents: 8086
diff changeset
   848
       | TYPE (msg, _, _) => raise THM(msg, 0, [th])
29e239c7b8c2 Thm.instantiate no longer normalizes, but Drule.instantiate does
paulson
parents: 8086
diff changeset
   849
end;
29e239c7b8c2 Thm.instantiate no longer normalizes, but Drule.instantiate does
paulson
parents: 8086
diff changeset
   850
29e239c7b8c2 Thm.instantiate no longer normalizes, but Drule.instantiate does
paulson
parents: 8086
diff changeset
   851
19775
06cb6743adf6 support embedded terms;
wenzelm
parents: 19753
diff changeset
   852
(** protected propositions and embedded terms **)
4789
9cf0073bbe2b added triv_goal, rev_triv_goal (for Isar);
wenzelm
parents: 4713
diff changeset
   853
9cf0073bbe2b added triv_goal, rev_triv_goal (for Isar);
wenzelm
parents: 4713
diff changeset
   854
local
26487
49850ac120e3 certify wrt. dynamic context;
wenzelm
parents: 26424
diff changeset
   855
  val A = certify (Free ("A", propT));
26424
a6cad32a27b0 eliminated theory ProtoPure;
wenzelm
parents: 25470
diff changeset
   856
  val get_axiom = Thm.unvarify o Thm.get_axiom (Context.the_theory (Context.the_thread_data ()));
a6cad32a27b0 eliminated theory ProtoPure;
wenzelm
parents: 25470
diff changeset
   857
  val prop_def = get_axiom "prop_def";
a6cad32a27b0 eliminated theory ProtoPure;
wenzelm
parents: 25470
diff changeset
   858
  val term_def = get_axiom "term_def";
4789
9cf0073bbe2b added triv_goal, rev_triv_goal (for Isar);
wenzelm
parents: 4713
diff changeset
   859
in
26487
49850ac120e3 certify wrt. dynamic context;
wenzelm
parents: 26424
diff changeset
   860
  val protect = Thm.capply (certify Logic.protectC);
21437
a3c55b85cf0e moved theorem kinds from PureThy to Thm;
wenzelm
parents: 20904
diff changeset
   861
  val protectI = store_thm "protectI" (PureThy.kind_rule Thm.internalK (standard
18025
7dac6858168d added incr_indexes;
wenzelm
parents: 17964
diff changeset
   862
      (Thm.equal_elim (Thm.symmetric prop_def) (Thm.assume A))));
21437
a3c55b85cf0e moved theorem kinds from PureThy to Thm;
wenzelm
parents: 20904
diff changeset
   863
  val protectD = store_thm "protectD" (PureThy.kind_rule Thm.internalK (standard
18025
7dac6858168d added incr_indexes;
wenzelm
parents: 17964
diff changeset
   864
      (Thm.equal_elim prop_def (Thm.assume (protect A)))));
18179
cf4b265007bf added protect_cong, cong_mono_thm;
wenzelm
parents: 18129
diff changeset
   865
  val protect_cong = store_standard_thm_open "protect_cong" (Thm.reflexive (protect A));
19775
06cb6743adf6 support embedded terms;
wenzelm
parents: 19753
diff changeset
   866
21437
a3c55b85cf0e moved theorem kinds from PureThy to Thm;
wenzelm
parents: 20904
diff changeset
   867
  val termI = store_thm "termI" (PureThy.kind_rule Thm.internalK (standard
19775
06cb6743adf6 support embedded terms;
wenzelm
parents: 19753
diff changeset
   868
      (Thm.equal_elim (Thm.symmetric term_def) (Thm.forall_intr A (Thm.trivial A)))));
4789
9cf0073bbe2b added triv_goal, rev_triv_goal (for Isar);
wenzelm
parents: 4713
diff changeset
   869
end;
9cf0073bbe2b added triv_goal, rev_triv_goal (for Isar);
wenzelm
parents: 4713
diff changeset
   870
18025
7dac6858168d added incr_indexes;
wenzelm
parents: 17964
diff changeset
   871
fun implies_intr_protected asms th =
18118
38316c575328 removed impose_hyps, satisfy_hyps;
wenzelm
parents: 18025
diff changeset
   872
  let val asms' = map protect asms in
38316c575328 removed impose_hyps, satisfy_hyps;
wenzelm
parents: 18025
diff changeset
   873
    implies_elim_list
38316c575328 removed impose_hyps, satisfy_hyps;
wenzelm
parents: 18025
diff changeset
   874
      (implies_intr_list asms th)
38316c575328 removed impose_hyps, satisfy_hyps;
wenzelm
parents: 18025
diff changeset
   875
      (map (fn asm' => Thm.assume asm' RS protectD) asms')
38316c575328 removed impose_hyps, satisfy_hyps;
wenzelm
parents: 18025
diff changeset
   876
    |> implies_intr_list asms'
38316c575328 removed impose_hyps, satisfy_hyps;
wenzelm
parents: 18025
diff changeset
   877
  end;
11815
ef7619398680 added implies_intr_goals;
wenzelm
parents: 11741
diff changeset
   878
19775
06cb6743adf6 support embedded terms;
wenzelm
parents: 19753
diff changeset
   879
fun mk_term ct =
06cb6743adf6 support embedded terms;
wenzelm
parents: 19753
diff changeset
   880
  let
26627
dac6d56b7c8d rep_cterm/rep_thm: no longer dereference theory_ref;
wenzelm
parents: 26487
diff changeset
   881
    val thy = Thm.theory_of_cterm ct;
19775
06cb6743adf6 support embedded terms;
wenzelm
parents: 19753
diff changeset
   882
    val cert = Thm.cterm_of thy;
06cb6743adf6 support embedded terms;
wenzelm
parents: 19753
diff changeset
   883
    val certT = Thm.ctyp_of thy;
26627
dac6d56b7c8d rep_cterm/rep_thm: no longer dereference theory_ref;
wenzelm
parents: 26487
diff changeset
   884
    val T = Thm.typ_of (Thm.ctyp_of_term ct);
19775
06cb6743adf6 support embedded terms;
wenzelm
parents: 19753
diff changeset
   885
    val a = certT (TVar (("'a", 0), []));
06cb6743adf6 support embedded terms;
wenzelm
parents: 19753
diff changeset
   886
    val x = cert (Var (("x", 0), T));
06cb6743adf6 support embedded terms;
wenzelm
parents: 19753
diff changeset
   887
  in Thm.instantiate ([(a, certT T)], [(x, ct)]) termI end;
06cb6743adf6 support embedded terms;
wenzelm
parents: 19753
diff changeset
   888
06cb6743adf6 support embedded terms;
wenzelm
parents: 19753
diff changeset
   889
fun dest_term th =
21566
af2932baf068 dest_term: strip_imp_concl;
wenzelm
parents: 21519
diff changeset
   890
  let val cprop = strip_imp_concl (Thm.cprop_of th) in
19775
06cb6743adf6 support embedded terms;
wenzelm
parents: 19753
diff changeset
   891
    if can Logic.dest_term (Thm.term_of cprop) then
20579
4dc799edef89 Thm.dest_arg;
wenzelm
parents: 20509
diff changeset
   892
      Thm.dest_arg cprop
19775
06cb6743adf6 support embedded terms;
wenzelm
parents: 19753
diff changeset
   893
    else raise THM ("dest_term", 0, [th])
06cb6743adf6 support embedded terms;
wenzelm
parents: 19753
diff changeset
   894
  end;
06cb6743adf6 support embedded terms;
wenzelm
parents: 19753
diff changeset
   895
21519
33f109ea389f added cterm_rule;
wenzelm
parents: 21437
diff changeset
   896
fun cterm_rule f = dest_term o f o mk_term;
33f109ea389f added cterm_rule;
wenzelm
parents: 21437
diff changeset
   897
fun term_rule thy f t = Thm.term_of (cterm_rule f (Thm.cterm_of thy t));
20881
54481abec257 added term_rule;
wenzelm
parents: 20861
diff changeset
   898
26487
49850ac120e3 certify wrt. dynamic context;
wenzelm
parents: 26424
diff changeset
   899
val dummy_thm = mk_term (certify (Term.dummy_pattern propT));
24005
2d473ed15491 added dummy_thm, is_dummy_thm;
wenzelm
parents: 23568
diff changeset
   900
2d473ed15491 added dummy_thm, is_dummy_thm;
wenzelm
parents: 23568
diff changeset
   901
4789
9cf0073bbe2b added triv_goal, rev_triv_goal (for Isar);
wenzelm
parents: 4713
diff changeset
   902
5688
7f582495967c added unvarify(T);
wenzelm
parents: 5311
diff changeset
   903
(** variations on instantiate **)
4285
05af145a61d4 cleaned signature;
wenzelm
parents: 4281
diff changeset
   904
05af145a61d4 cleaned signature;
wenzelm
parents: 4281
diff changeset
   905
(* instantiate by left-to-right occurrence of variables *)
05af145a61d4 cleaned signature;
wenzelm
parents: 4281
diff changeset
   906
05af145a61d4 cleaned signature;
wenzelm
parents: 4281
diff changeset
   907
fun instantiate' cTs cts thm =
05af145a61d4 cleaned signature;
wenzelm
parents: 4281
diff changeset
   908
  let
05af145a61d4 cleaned signature;
wenzelm
parents: 4281
diff changeset
   909
    fun err msg =
05af145a61d4 cleaned signature;
wenzelm
parents: 4281
diff changeset
   910
      raise TYPE ("instantiate': " ^ msg,
19482
9f11af8f7ef9 tuned basic list operators (flat, maps, map_filter);
wenzelm
parents: 19421
diff changeset
   911
        map_filter (Option.map Thm.typ_of) cTs,
9f11af8f7ef9 tuned basic list operators (flat, maps, map_filter);
wenzelm
parents: 19421
diff changeset
   912
        map_filter (Option.map Thm.term_of) cts);
4285
05af145a61d4 cleaned signature;
wenzelm
parents: 4281
diff changeset
   913
05af145a61d4 cleaned signature;
wenzelm
parents: 4281
diff changeset
   914
    fun inst_of (v, ct) =
16425
2427be27cc60 accomodate identification of type Sign.sg and theory;
wenzelm
parents: 15949
diff changeset
   915
      (Thm.cterm_of (Thm.theory_of_cterm ct) (Var v), ct)
4285
05af145a61d4 cleaned signature;
wenzelm
parents: 4281
diff changeset
   916
        handle TYPE (msg, _, _) => err msg;
05af145a61d4 cleaned signature;
wenzelm
parents: 4281
diff changeset
   917
15797
a63605582573 - Eliminated nodup_vars check.
berghofe
parents: 15669
diff changeset
   918
    fun tyinst_of (v, cT) =
16425
2427be27cc60 accomodate identification of type Sign.sg and theory;
wenzelm
parents: 15949
diff changeset
   919
      (Thm.ctyp_of (Thm.theory_of_ctyp cT) (TVar v), cT)
15797
a63605582573 - Eliminated nodup_vars check.
berghofe
parents: 15669
diff changeset
   920
        handle TYPE (msg, _, _) => err msg;
a63605582573 - Eliminated nodup_vars check.
berghofe
parents: 15669
diff changeset
   921
20298
6915973e88f3 removed obsolete frees/vars_of etc.;
wenzelm
parents: 20260
diff changeset
   922
    fun zip_vars xs ys =
6915973e88f3 removed obsolete frees/vars_of etc.;
wenzelm
parents: 20260
diff changeset
   923
      zip_options xs ys handle Library.UnequalLengths =>
6915973e88f3 removed obsolete frees/vars_of etc.;
wenzelm
parents: 20260
diff changeset
   924
        err "more instantiations than variables in thm";
4285
05af145a61d4 cleaned signature;
wenzelm
parents: 4281
diff changeset
   925
05af145a61d4 cleaned signature;
wenzelm
parents: 4281
diff changeset
   926
    (*instantiate types first!*)
05af145a61d4 cleaned signature;
wenzelm
parents: 4281
diff changeset
   927
    val thm' =
05af145a61d4 cleaned signature;
wenzelm
parents: 4281
diff changeset
   928
      if forall is_none cTs then thm
20298
6915973e88f3 removed obsolete frees/vars_of etc.;
wenzelm
parents: 20260
diff changeset
   929
      else Thm.instantiate
22695
17073e9b94f2 moved Drule.plain_prop_of, Drule.fold_terms to more_thm.ML;
wenzelm
parents: 22681
diff changeset
   930
        (map tyinst_of (zip_vars (rev (Thm.fold_terms Term.add_tvars thm [])) cTs), []) thm;
20579
4dc799edef89 Thm.dest_arg;
wenzelm
parents: 20509
diff changeset
   931
    val thm'' =
4285
05af145a61d4 cleaned signature;
wenzelm
parents: 4281
diff changeset
   932
      if forall is_none cts then thm'
20298
6915973e88f3 removed obsolete frees/vars_of etc.;
wenzelm
parents: 20260
diff changeset
   933
      else Thm.instantiate
22695
17073e9b94f2 moved Drule.plain_prop_of, Drule.fold_terms to more_thm.ML;
wenzelm
parents: 22681
diff changeset
   934
        ([], map inst_of (zip_vars (rev (Thm.fold_terms Term.add_vars thm' [])) cts)) thm';
20298
6915973e88f3 removed obsolete frees/vars_of etc.;
wenzelm
parents: 20260
diff changeset
   935
    in thm'' end;
4285
05af145a61d4 cleaned signature;
wenzelm
parents: 4281
diff changeset
   936
05af145a61d4 cleaned signature;
wenzelm
parents: 4281
diff changeset
   937
14081
6c0f67e2f8d5 Added functions for renaming bound variables.
berghofe
parents: 13659
diff changeset
   938
6c0f67e2f8d5 Added functions for renaming bound variables.
berghofe
parents: 13659
diff changeset
   939
(** renaming of bound variables **)
6c0f67e2f8d5 Added functions for renaming bound variables.
berghofe
parents: 13659
diff changeset
   940
6c0f67e2f8d5 Added functions for renaming bound variables.
berghofe
parents: 13659
diff changeset
   941
(* replace bound variables x_i in thm by y_i *)
6c0f67e2f8d5 Added functions for renaming bound variables.
berghofe
parents: 13659
diff changeset
   942
(* where vs = [(x_1, y_1), ..., (x_n, y_n)]  *)
6c0f67e2f8d5 Added functions for renaming bound variables.
berghofe
parents: 13659
diff changeset
   943
6c0f67e2f8d5 Added functions for renaming bound variables.
berghofe
parents: 13659
diff changeset
   944
fun rename_bvars [] thm = thm
6c0f67e2f8d5 Added functions for renaming bound variables.
berghofe
parents: 13659
diff changeset
   945
  | rename_bvars vs thm =
26627
dac6d56b7c8d rep_cterm/rep_thm: no longer dereference theory_ref;
wenzelm
parents: 26487
diff changeset
   946
      let
dac6d56b7c8d rep_cterm/rep_thm: no longer dereference theory_ref;
wenzelm
parents: 26487
diff changeset
   947
        val cert = Thm.cterm_of (Thm.theory_of_thm thm);
dac6d56b7c8d rep_cterm/rep_thm: no longer dereference theory_ref;
wenzelm
parents: 26487
diff changeset
   948
        fun ren (Abs (x, T, t)) = Abs (AList.lookup (op =) vs x |> the_default x, T, ren t)
dac6d56b7c8d rep_cterm/rep_thm: no longer dereference theory_ref;
wenzelm
parents: 26487
diff changeset
   949
          | ren (t $ u) = ren t $ ren u
dac6d56b7c8d rep_cterm/rep_thm: no longer dereference theory_ref;
wenzelm
parents: 26487
diff changeset
   950
          | ren t = t;
dac6d56b7c8d rep_cterm/rep_thm: no longer dereference theory_ref;
wenzelm
parents: 26487
diff changeset
   951
      in equal_elim (reflexive (cert (ren (Thm.prop_of thm)))) thm end;
14081
6c0f67e2f8d5 Added functions for renaming bound variables.
berghofe
parents: 13659
diff changeset
   952
6c0f67e2f8d5 Added functions for renaming bound variables.
berghofe
parents: 13659
diff changeset
   953
6c0f67e2f8d5 Added functions for renaming bound variables.
berghofe
parents: 13659
diff changeset
   954
(* renaming in left-to-right order *)
6c0f67e2f8d5 Added functions for renaming bound variables.
berghofe
parents: 13659
diff changeset
   955
6c0f67e2f8d5 Added functions for renaming bound variables.
berghofe
parents: 13659
diff changeset
   956
fun rename_bvars' xs thm =
6c0f67e2f8d5 Added functions for renaming bound variables.
berghofe
parents: 13659
diff changeset
   957
  let
26627
dac6d56b7c8d rep_cterm/rep_thm: no longer dereference theory_ref;
wenzelm
parents: 26487
diff changeset
   958
    val cert = Thm.cterm_of (Thm.theory_of_thm thm);
dac6d56b7c8d rep_cterm/rep_thm: no longer dereference theory_ref;
wenzelm
parents: 26487
diff changeset
   959
    val prop = Thm.prop_of thm;
14081
6c0f67e2f8d5 Added functions for renaming bound variables.
berghofe
parents: 13659
diff changeset
   960
    fun rename [] t = ([], t)
6c0f67e2f8d5 Added functions for renaming bound variables.
berghofe
parents: 13659
diff changeset
   961
      | rename (x' :: xs) (Abs (x, T, t)) =
6c0f67e2f8d5 Added functions for renaming bound variables.
berghofe
parents: 13659
diff changeset
   962
          let val (xs', t') = rename xs t
18929
d81435108688 Envir.(beta_)eta_contract;
wenzelm
parents: 18922
diff changeset
   963
          in (xs', Abs (the_default x x', T, t')) end
14081
6c0f67e2f8d5 Added functions for renaming bound variables.
berghofe
parents: 13659
diff changeset
   964
      | rename xs (t $ u) =
6c0f67e2f8d5 Added functions for renaming bound variables.
berghofe
parents: 13659
diff changeset
   965
          let
6c0f67e2f8d5 Added functions for renaming bound variables.
berghofe
parents: 13659
diff changeset
   966
            val (xs', t') = rename xs t;
6c0f67e2f8d5 Added functions for renaming bound variables.
berghofe
parents: 13659
diff changeset
   967
            val (xs'', u') = rename xs' u
6c0f67e2f8d5 Added functions for renaming bound variables.
berghofe
parents: 13659
diff changeset
   968
          in (xs'', t' $ u') end
6c0f67e2f8d5 Added functions for renaming bound variables.
berghofe
parents: 13659
diff changeset
   969
      | rename xs t = (xs, t);
6c0f67e2f8d5 Added functions for renaming bound variables.
berghofe
parents: 13659
diff changeset
   970
  in case rename xs prop of
26627
dac6d56b7c8d rep_cterm/rep_thm: no longer dereference theory_ref;
wenzelm
parents: 26487
diff changeset
   971
      ([], prop') => equal_elim (reflexive (cert prop')) thm
14081
6c0f67e2f8d5 Added functions for renaming bound variables.
berghofe
parents: 13659
diff changeset
   972
    | _ => error "More names than abstractions in theorem"
6c0f67e2f8d5 Added functions for renaming bound variables.
berghofe
parents: 13659
diff changeset
   973
  end;
6c0f67e2f8d5 Added functions for renaming bound variables.
berghofe
parents: 13659
diff changeset
   974
6c0f67e2f8d5 Added functions for renaming bound variables.
berghofe
parents: 13659
diff changeset
   975
11975
129c6679e8c4 rules for meta-level conjunction;
wenzelm
parents: 11960
diff changeset
   976
18225
699aad0746e2 export map_tags;
wenzelm
parents: 18206
diff changeset
   977
(** multi_resolve **)
699aad0746e2 export map_tags;
wenzelm
parents: 18206
diff changeset
   978
699aad0746e2 export map_tags;
wenzelm
parents: 18206
diff changeset
   979
local
699aad0746e2 export map_tags;
wenzelm
parents: 18206
diff changeset
   980
699aad0746e2 export map_tags;
wenzelm
parents: 18206
diff changeset
   981
fun res th i rule =
699aad0746e2 export map_tags;
wenzelm
parents: 18206
diff changeset
   982
  Thm.biresolution false [(false, th)] i rule handle THM _ => Seq.empty;
699aad0746e2 export map_tags;
wenzelm
parents: 18206
diff changeset
   983
699aad0746e2 export map_tags;
wenzelm
parents: 18206
diff changeset
   984
fun multi_res _ [] rule = Seq.single rule
699aad0746e2 export map_tags;
wenzelm
parents: 18206
diff changeset
   985
  | multi_res i (th :: ths) rule = Seq.maps (res th i) (multi_res (i + 1) ths rule);
699aad0746e2 export map_tags;
wenzelm
parents: 18206
diff changeset
   986
699aad0746e2 export map_tags;
wenzelm
parents: 18206
diff changeset
   987
in
699aad0746e2 export map_tags;
wenzelm
parents: 18206
diff changeset
   988
699aad0746e2 export map_tags;
wenzelm
parents: 18206
diff changeset
   989
val multi_resolve = multi_res 1;
699aad0746e2 export map_tags;
wenzelm
parents: 18206
diff changeset
   990
fun multi_resolves facts rules = Seq.maps (multi_resolve facts) (Seq.of_list rules);
699aad0746e2 export map_tags;
wenzelm
parents: 18206
diff changeset
   991
699aad0746e2 export map_tags;
wenzelm
parents: 18206
diff changeset
   992
end;
699aad0746e2 export map_tags;
wenzelm
parents: 18206
diff changeset
   993
11975
129c6679e8c4 rules for meta-level conjunction;
wenzelm
parents: 11960
diff changeset
   994
end;
5903
5d9beee36fbe export vars_of and friends;
wenzelm
parents: 5688
diff changeset
   995
5d9beee36fbe export vars_of and friends;
wenzelm
parents: 5688
diff changeset
   996
structure BasicDrule: BASIC_DRULE = Drule;
5d9beee36fbe export vars_of and friends;
wenzelm
parents: 5688
diff changeset
   997
open BasicDrule;