src/Pure/goal.ML
author wenzelm
Sat, 13 Oct 2012 16:19:16 +0200
changeset 49845 9b19c0e81166
parent 49830 28d207ba9340
child 49847 ed5080c03165
permissions -rw-r--r--
tuned signature;
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
17980
788836292b1a Internal goals.
wenzelm
parents:
diff changeset
     1
(*  Title:      Pure/goal.ML
29345
5904873d8f11 tuned protect, conclude: Drule.comp_no_flatten;
wenzelm
parents: 29343
diff changeset
     2
    Author:     Makarius
17980
788836292b1a Internal goals.
wenzelm
parents:
diff changeset
     3
49061
7449b804073b central management of forked goals wrt. transaction id;
wenzelm
parents: 49041
diff changeset
     4
Goals in tactical theorem proving, with support for forked proofs.
17980
788836292b1a Internal goals.
wenzelm
parents:
diff changeset
     5
*)
788836292b1a Internal goals.
wenzelm
parents:
diff changeset
     6
788836292b1a Internal goals.
wenzelm
parents:
diff changeset
     7
signature BASIC_GOAL =
788836292b1a Internal goals.
wenzelm
parents:
diff changeset
     8
sig
32738
15bb09ca0378 explicit indication of Unsynchronized.ref;
wenzelm
parents: 32365
diff changeset
     9
  val parallel_proofs: int Unsynchronized.ref
41703
d27950860514 parallelization of nested Isar proofs is subject to Goal.parallel_proofs_threshold;
wenzelm
parents: 41683
diff changeset
    10
  val parallel_proofs_threshold: int Unsynchronized.ref
17980
788836292b1a Internal goals.
wenzelm
parents:
diff changeset
    11
  val SELECT_GOAL: tactic -> int -> tactic
23418
c195f6f13769 balanced conjunctions;
wenzelm
parents: 23414
diff changeset
    12
  val CONJUNCTS: tactic -> int -> tactic
23414
927203ad4b3a tuned conjunction tactics: slightly smaller proof terms;
wenzelm
parents: 23356
diff changeset
    13
  val PRECISE_CONJUNCTS: int -> tactic -> int -> tactic
32365
9b74d0339c44 added PARALLEL_CHOICE, PARALLEL_GOALS;
wenzelm
parents: 32255
diff changeset
    14
  val PARALLEL_CHOICE: tactic list -> tactic
9b74d0339c44 added PARALLEL_CHOICE, PARALLEL_GOALS;
wenzelm
parents: 32255
diff changeset
    15
  val PARALLEL_GOALS: tactic -> tactic
17980
788836292b1a Internal goals.
wenzelm
parents:
diff changeset
    16
end;
788836292b1a Internal goals.
wenzelm
parents:
diff changeset
    17
788836292b1a Internal goals.
wenzelm
parents:
diff changeset
    18
signature GOAL =
788836292b1a Internal goals.
wenzelm
parents:
diff changeset
    19
sig
788836292b1a Internal goals.
wenzelm
parents:
diff changeset
    20
  include BASIC_GOAL
788836292b1a Internal goals.
wenzelm
parents:
diff changeset
    21
  val init: cterm -> thm
18027
09ab79d4e8e1 renamed Goal constant to prop, more general protect/unprotect interfaces;
wenzelm
parents: 17986
diff changeset
    22
  val protect: thm -> thm
17980
788836292b1a Internal goals.
wenzelm
parents:
diff changeset
    23
  val conclude: thm -> thm
49845
9b19c0e81166 tuned signature;
wenzelm
parents: 49830
diff changeset
    24
  val check_finished: Proof.context -> thm -> thm
32197
bc341bbe4417 Goal.finish: explicit context for printing;
wenzelm
parents: 32187
diff changeset
    25
  val finish: Proof.context -> thm -> thm
21604
1af327306c8e added norm/close_result (supercede local_standard etc.);
wenzelm
parents: 21579
diff changeset
    26
  val norm_result: thm -> thm
41677
fa0da47131d2 more specific Goal.fork_name;
wenzelm
parents: 41674
diff changeset
    27
  val fork_name: string -> (unit -> 'a) -> 'a future
37186
349e9223c685 explicit markup for forked goals, as indicated by Goal.fork;
wenzelm
parents: 36613
diff changeset
    28
  val fork: (unit -> 'a) -> 'a future
49061
7449b804073b central management of forked goals wrt. transaction id;
wenzelm
parents: 49041
diff changeset
    29
  val peek_futures: serial -> unit future list
7449b804073b central management of forked goals wrt. transaction id;
wenzelm
parents: 49041
diff changeset
    30
  val cancel_futures: unit -> unit
49012
8686c36fa27d refined treatment of forked proofs at transaction boundaries, including proof commands (see also 7ee000ce5390);
wenzelm
parents: 49009
diff changeset
    31
  val future_enabled_level: int -> bool
29448
34b9652b2f45 added Goal.future_enabled abstraction -- now also checks that this is already
wenzelm
parents: 29435
diff changeset
    32
  val future_enabled: unit -> bool
49012
8686c36fa27d refined treatment of forked proofs at transaction boundaries, including proof commands (see also 7ee000ce5390);
wenzelm
parents: 49009
diff changeset
    33
  val future_enabled_nested: int -> bool
28973
c549650d1442 future proofs: pass actual futures to facilitate composite computations;
wenzelm
parents: 28619
diff changeset
    34
  val future_result: Proof.context -> thm future -> term -> thm
23356
dbe3731241c3 renamed prove_raw to prove_internal;
wenzelm
parents: 23237
diff changeset
    35
  val prove_internal: cterm list -> cterm -> (thm list -> tactic) -> thm
20290
3f886c176c9b normalized Proof.context/method type aliases;
wenzelm
parents: 20260
diff changeset
    36
  val prove_multi: Proof.context -> string list -> term list -> term list ->
3f886c176c9b normalized Proof.context/method type aliases;
wenzelm
parents: 20260
diff changeset
    37
    ({prems: thm list, context: Proof.context} -> tactic) -> thm list
28446
a01de3b3fa2e renamed promise to future, tuned related interfaces;
wenzelm
parents: 28363
diff changeset
    38
  val prove_future: Proof.context -> string list -> term list -> term ->
28340
e8597242f649 added promise_result, prove_promise;
wenzelm
parents: 27218
diff changeset
    39
    ({prems: thm list, context: Proof.context} -> tactic) -> thm
20290
3f886c176c9b normalized Proof.context/method type aliases;
wenzelm
parents: 20260
diff changeset
    40
  val prove: Proof.context -> string list -> term list -> term ->
3f886c176c9b normalized Proof.context/method type aliases;
wenzelm
parents: 20260
diff changeset
    41
    ({prems: thm list, context: Proof.context} -> tactic) -> thm
26713
1c6181def1d0 prove_global: Variable.set_body true, pass context;
wenzelm
parents: 26628
diff changeset
    42
  val prove_global: theory -> string list -> term list -> term ->
1c6181def1d0 prove_global: Variable.set_body true, pass context;
wenzelm
parents: 26628
diff changeset
    43
    ({prems: thm list, context: Proof.context} -> tactic) -> thm
19184
3e30297e1300 added extract, retrofit;
wenzelm
parents: 18678
diff changeset
    44
  val extract: int -> int -> thm -> thm Seq.seq
3e30297e1300 added extract, retrofit;
wenzelm
parents: 18678
diff changeset
    45
  val retrofit: int -> int -> thm -> thm -> thm Seq.seq
23418
c195f6f13769 balanced conjunctions;
wenzelm
parents: 23414
diff changeset
    46
  val conjunction_tac: int -> tactic
23414
927203ad4b3a tuned conjunction tactics: slightly smaller proof terms;
wenzelm
parents: 23356
diff changeset
    47
  val precise_conjunction_tac: int -> int -> tactic
23418
c195f6f13769 balanced conjunctions;
wenzelm
parents: 23414
diff changeset
    48
  val recover_conjunction_tac: tactic
21687
f689f729afab reorganized structure Goal vs. Tactic;
wenzelm
parents: 21604
diff changeset
    49
  val norm_hhf_tac: int -> tactic
f689f729afab reorganized structure Goal vs. Tactic;
wenzelm
parents: 21604
diff changeset
    50
  val compose_hhf_tac: thm -> int -> tactic
23237
ac9d126456e1 added assume_rule_tac;
wenzelm
parents: 22902
diff changeset
    51
  val assume_rule_tac: Proof.context -> int -> tactic
17980
788836292b1a Internal goals.
wenzelm
parents:
diff changeset
    52
end;
788836292b1a Internal goals.
wenzelm
parents:
diff changeset
    53
788836292b1a Internal goals.
wenzelm
parents:
diff changeset
    54
structure Goal: GOAL =
788836292b1a Internal goals.
wenzelm
parents:
diff changeset
    55
struct
788836292b1a Internal goals.
wenzelm
parents:
diff changeset
    56
18027
09ab79d4e8e1 renamed Goal constant to prop, more general protect/unprotect interfaces;
wenzelm
parents: 17986
diff changeset
    57
(** goals **)
09ab79d4e8e1 renamed Goal constant to prop, more general protect/unprotect interfaces;
wenzelm
parents: 17986
diff changeset
    58
09ab79d4e8e1 renamed Goal constant to prop, more general protect/unprotect interfaces;
wenzelm
parents: 17986
diff changeset
    59
(*
09ab79d4e8e1 renamed Goal constant to prop, more general protect/unprotect interfaces;
wenzelm
parents: 17986
diff changeset
    60
  -------- (init)
09ab79d4e8e1 renamed Goal constant to prop, more general protect/unprotect interfaces;
wenzelm
parents: 17986
diff changeset
    61
  C ==> #C
09ab79d4e8e1 renamed Goal constant to prop, more general protect/unprotect interfaces;
wenzelm
parents: 17986
diff changeset
    62
*)
20290
3f886c176c9b normalized Proof.context/method type aliases;
wenzelm
parents: 20260
diff changeset
    63
val init =
22902
ac833b4bb7ee moved some Drule operations to Thm (see more_thm.ML);
wenzelm
parents: 21687
diff changeset
    64
  let val A = #1 (Thm.dest_implies (Thm.cprop_of Drule.protectI))
20290
3f886c176c9b normalized Proof.context/method type aliases;
wenzelm
parents: 20260
diff changeset
    65
  in fn C => Thm.instantiate ([], [(A, C)]) Drule.protectI end;
17980
788836292b1a Internal goals.
wenzelm
parents:
diff changeset
    66
788836292b1a Internal goals.
wenzelm
parents:
diff changeset
    67
(*
18119
63901a9b99dc export compose_hhf;
wenzelm
parents: 18027
diff changeset
    68
   C
63901a9b99dc export compose_hhf;
wenzelm
parents: 18027
diff changeset
    69
  --- (protect)
63901a9b99dc export compose_hhf;
wenzelm
parents: 18027
diff changeset
    70
  #C
17980
788836292b1a Internal goals.
wenzelm
parents:
diff changeset
    71
*)
29345
5904873d8f11 tuned protect, conclude: Drule.comp_no_flatten;
wenzelm
parents: 29343
diff changeset
    72
fun protect th = Drule.comp_no_flatten (th, 0) 1 Drule.protectI;
17980
788836292b1a Internal goals.
wenzelm
parents:
diff changeset
    73
788836292b1a Internal goals.
wenzelm
parents:
diff changeset
    74
(*
18027
09ab79d4e8e1 renamed Goal constant to prop, more general protect/unprotect interfaces;
wenzelm
parents: 17986
diff changeset
    75
  A ==> ... ==> #C
09ab79d4e8e1 renamed Goal constant to prop, more general protect/unprotect interfaces;
wenzelm
parents: 17986
diff changeset
    76
  ---------------- (conclude)
17980
788836292b1a Internal goals.
wenzelm
parents:
diff changeset
    77
  A ==> ... ==> C
788836292b1a Internal goals.
wenzelm
parents:
diff changeset
    78
*)
29345
5904873d8f11 tuned protect, conclude: Drule.comp_no_flatten;
wenzelm
parents: 29343
diff changeset
    79
fun conclude th = Drule.comp_no_flatten (th, Thm.nprems_of th) 1 Drule.protectD;
17980
788836292b1a Internal goals.
wenzelm
parents:
diff changeset
    80
788836292b1a Internal goals.
wenzelm
parents:
diff changeset
    81
(*
18027
09ab79d4e8e1 renamed Goal constant to prop, more general protect/unprotect interfaces;
wenzelm
parents: 17986
diff changeset
    82
  #C
09ab79d4e8e1 renamed Goal constant to prop, more general protect/unprotect interfaces;
wenzelm
parents: 17986
diff changeset
    83
  --- (finish)
09ab79d4e8e1 renamed Goal constant to prop, more general protect/unprotect interfaces;
wenzelm
parents: 17986
diff changeset
    84
   C
17983
wenzelm
parents: 17980
diff changeset
    85
*)
32197
bc341bbe4417 Goal.finish: explicit context for printing;
wenzelm
parents: 32187
diff changeset
    86
fun check_finished ctxt th =
17980
788836292b1a Internal goals.
wenzelm
parents:
diff changeset
    87
  (case Thm.nprems_of th of
49845
9b19c0e81166 tuned signature;
wenzelm
parents: 49830
diff changeset
    88
    0 => th
17980
788836292b1a Internal goals.
wenzelm
parents:
diff changeset
    89
  | n => raise THM ("Proof failed.\n" ^
32197
bc341bbe4417 Goal.finish: explicit context for printing;
wenzelm
parents: 32187
diff changeset
    90
      Pretty.string_of (Pretty.chunks
39125
f45d332a90e3 pretty_goals: turned some global references and function arguments into configuration options (goals_limit = 10, goals_total = true, show_main_goal = false) depending on the context;
wenzelm
parents: 38875
diff changeset
    91
        (Goal_Display.pretty_goals
f45d332a90e3 pretty_goals: turned some global references and function arguments into configuration options (goals_limit = 10, goals_total = true, show_main_goal = false) depending on the context;
wenzelm
parents: 38875
diff changeset
    92
          (ctxt
f45d332a90e3 pretty_goals: turned some global references and function arguments into configuration options (goals_limit = 10, goals_total = true, show_main_goal = false) depending on the context;
wenzelm
parents: 38875
diff changeset
    93
            |> Config.put Goal_Display.goals_limit n
f45d332a90e3 pretty_goals: turned some global references and function arguments into configuration options (goals_limit = 10, goals_total = true, show_main_goal = false) depending on the context;
wenzelm
parents: 38875
diff changeset
    94
            |> Config.put Goal_Display.show_main_goal true) th)) ^
32197
bc341bbe4417 Goal.finish: explicit context for printing;
wenzelm
parents: 32187
diff changeset
    95
      "\n" ^ string_of_int n ^ " unsolved goal(s)!", 0, [th]));
bc341bbe4417 Goal.finish: explicit context for printing;
wenzelm
parents: 32187
diff changeset
    96
49845
9b19c0e81166 tuned signature;
wenzelm
parents: 49830
diff changeset
    97
fun finish ctxt = check_finished ctxt #> conclude;
17980
788836292b1a Internal goals.
wenzelm
parents:
diff changeset
    98
788836292b1a Internal goals.
wenzelm
parents:
diff changeset
    99
18027
09ab79d4e8e1 renamed Goal constant to prop, more general protect/unprotect interfaces;
wenzelm
parents: 17986
diff changeset
   100
09ab79d4e8e1 renamed Goal constant to prop, more general protect/unprotect interfaces;
wenzelm
parents: 17986
diff changeset
   101
(** results **)
09ab79d4e8e1 renamed Goal constant to prop, more general protect/unprotect interfaces;
wenzelm
parents: 17986
diff changeset
   102
28340
e8597242f649 added promise_result, prove_promise;
wenzelm
parents: 27218
diff changeset
   103
(* normal form *)
e8597242f649 added promise_result, prove_promise;
wenzelm
parents: 27218
diff changeset
   104
21604
1af327306c8e added norm/close_result (supercede local_standard etc.);
wenzelm
parents: 21579
diff changeset
   105
val norm_result =
1af327306c8e added norm/close_result (supercede local_standard etc.);
wenzelm
parents: 21579
diff changeset
   106
  Drule.flexflex_unique
41228
e1fce873b814 renamed structure MetaSimplifier to raw_Simplifer, to emphasize its meaning;
wenzelm
parents: 39125
diff changeset
   107
  #> Raw_Simplifier.norm_hhf_protect
21604
1af327306c8e added norm/close_result (supercede local_standard etc.);
wenzelm
parents: 21579
diff changeset
   108
  #> Thm.strip_shyps
1af327306c8e added norm/close_result (supercede local_standard etc.);
wenzelm
parents: 21579
diff changeset
   109
  #> Drule.zero_var_indexes;
1af327306c8e added norm/close_result (supercede local_standard etc.);
wenzelm
parents: 21579
diff changeset
   110
1af327306c8e added norm/close_result (supercede local_standard etc.);
wenzelm
parents: 21579
diff changeset
   111
41703
d27950860514 parallelization of nested Isar proofs is subject to Goal.parallel_proofs_threshold;
wenzelm
parents: 41683
diff changeset
   112
(* forked proofs *)
d27950860514 parallelization of nested Isar proofs is subject to Goal.parallel_proofs_threshold;
wenzelm
parents: 41683
diff changeset
   113
49061
7449b804073b central management of forked goals wrt. transaction id;
wenzelm
parents: 49041
diff changeset
   114
local
41703
d27950860514 parallelization of nested Isar proofs is subject to Goal.parallel_proofs_threshold;
wenzelm
parents: 41683
diff changeset
   115
49061
7449b804073b central management of forked goals wrt. transaction id;
wenzelm
parents: 49041
diff changeset
   116
val forked_proofs =
7449b804073b central management of forked goals wrt. transaction id;
wenzelm
parents: 49041
diff changeset
   117
  Synchronized.var "forked_proofs"
7449b804073b central management of forked goals wrt. transaction id;
wenzelm
parents: 49041
diff changeset
   118
    (0, []: Future.group list, Inttab.empty: unit future list Inttab.table);
7449b804073b central management of forked goals wrt. transaction id;
wenzelm
parents: 49041
diff changeset
   119
7449b804073b central management of forked goals wrt. transaction id;
wenzelm
parents: 49041
diff changeset
   120
fun count_forked i =
7449b804073b central management of forked goals wrt. transaction id;
wenzelm
parents: 49041
diff changeset
   121
  Synchronized.change forked_proofs (fn (m, groups, tab) =>
41703
d27950860514 parallelization of nested Isar proofs is subject to Goal.parallel_proofs_threshold;
wenzelm
parents: 41683
diff changeset
   122
    let
d27950860514 parallelization of nested Isar proofs is subject to Goal.parallel_proofs_threshold;
wenzelm
parents: 41683
diff changeset
   123
      val n = m + i;
d27950860514 parallelization of nested Isar proofs is subject to Goal.parallel_proofs_threshold;
wenzelm
parents: 41683
diff changeset
   124
      val _ =
41776
3bd83302a3c3 less verbose tracing;
wenzelm
parents: 41703
diff changeset
   125
        Multithreading.tracing 2 (fn () =>
41703
d27950860514 parallelization of nested Isar proofs is subject to Goal.parallel_proofs_threshold;
wenzelm
parents: 41683
diff changeset
   126
          ("PROOFS " ^ Time.toString (Time.now ()) ^ ": " ^ string_of_int n));
49061
7449b804073b central management of forked goals wrt. transaction id;
wenzelm
parents: 49041
diff changeset
   127
    in (n, groups, tab) end);
7449b804073b central management of forked goals wrt. transaction id;
wenzelm
parents: 49041
diff changeset
   128
7449b804073b central management of forked goals wrt. transaction id;
wenzelm
parents: 49041
diff changeset
   129
fun register_forked id future =
7449b804073b central management of forked goals wrt. transaction id;
wenzelm
parents: 49041
diff changeset
   130
  Synchronized.change forked_proofs (fn (m, groups, tab) =>
7449b804073b central management of forked goals wrt. transaction id;
wenzelm
parents: 49041
diff changeset
   131
    let
7449b804073b central management of forked goals wrt. transaction id;
wenzelm
parents: 49041
diff changeset
   132
      val groups' = Task_Queue.group_of_task (Future.task_of future) :: groups;
7449b804073b central management of forked goals wrt. transaction id;
wenzelm
parents: 49041
diff changeset
   133
      val tab' = Inttab.cons_list (id, Future.map (K ()) future) tab;
7449b804073b central management of forked goals wrt. transaction id;
wenzelm
parents: 49041
diff changeset
   134
    in (m, groups', tab') end);
37186
349e9223c685 explicit markup for forked goals, as indicated by Goal.fork;
wenzelm
parents: 36613
diff changeset
   135
49036
4680c4046814 further refinement of command status, to accomodate forked proofs;
wenzelm
parents: 49012
diff changeset
   136
fun status task markups =
4680c4046814 further refinement of command status, to accomodate forked proofs;
wenzelm
parents: 49012
diff changeset
   137
  let val props = Markup.properties [(Isabelle_Markup.taskN, Task_Queue.str_of_task task)]
4680c4046814 further refinement of command status, to accomodate forked proofs;
wenzelm
parents: 49012
diff changeset
   138
  in Output.status (implode (map (Markup.markup_only o props) markups)) end;
49009
15381ea111ec refined status of forked goals;
wenzelm
parents: 48992
diff changeset
   139
49061
7449b804073b central management of forked goals wrt. transaction id;
wenzelm
parents: 49041
diff changeset
   140
in
7449b804073b central management of forked goals wrt. transaction id;
wenzelm
parents: 49041
diff changeset
   141
41677
fa0da47131d2 more specific Goal.fork_name;
wenzelm
parents: 41674
diff changeset
   142
fun fork_name name e =
41703
d27950860514 parallelization of nested Isar proofs is subject to Goal.parallel_proofs_threshold;
wenzelm
parents: 41683
diff changeset
   143
  uninterruptible (fn _ => fn () =>
d27950860514 parallelization of nested Isar proofs is subject to Goal.parallel_proofs_threshold;
wenzelm
parents: 41683
diff changeset
   144
    let
49061
7449b804073b central management of forked goals wrt. transaction id;
wenzelm
parents: 49041
diff changeset
   145
      val id =
7449b804073b central management of forked goals wrt. transaction id;
wenzelm
parents: 49041
diff changeset
   146
        (case Position.get_id (Position.thread_data ()) of
7449b804073b central management of forked goals wrt. transaction id;
wenzelm
parents: 49041
diff changeset
   147
          NONE => 0
7449b804073b central management of forked goals wrt. transaction id;
wenzelm
parents: 49041
diff changeset
   148
        | SOME id => Markup.parse_int id);
7449b804073b central management of forked goals wrt. transaction id;
wenzelm
parents: 49041
diff changeset
   149
      val _ = count_forked 1;
41703
d27950860514 parallelization of nested Isar proofs is subject to Goal.parallel_proofs_threshold;
wenzelm
parents: 41683
diff changeset
   150
      val future =
44302
wenzelm
parents: 44114
diff changeset
   151
        (singleton o Future.forks)
47415
c486ac962b89 tuned future priorities: print 0, goal ~1, execute ~2;
wenzelm
parents: 45458
diff changeset
   152
          {name = name, group = NONE, deps = [], pri = ~1, interrupts = false}
49036
4680c4046814 further refinement of command status, to accomodate forked proofs;
wenzelm
parents: 49012
diff changeset
   153
          (fn () =>
4680c4046814 further refinement of command status, to accomodate forked proofs;
wenzelm
parents: 49012
diff changeset
   154
            let
4680c4046814 further refinement of command status, to accomodate forked proofs;
wenzelm
parents: 49012
diff changeset
   155
              val task = the (Future.worker_task ());
4680c4046814 further refinement of command status, to accomodate forked proofs;
wenzelm
parents: 49012
diff changeset
   156
              val _ = status task [Isabelle_Markup.running];
4680c4046814 further refinement of command status, to accomodate forked proofs;
wenzelm
parents: 49012
diff changeset
   157
              val result = Exn.capture (Future.interruptible_task e) ();
49037
d7a1973b063c more markup for failed goal forks, reusing "bad";
wenzelm
parents: 49036
diff changeset
   158
              val _ = status task [Isabelle_Markup.finished, Isabelle_Markup.joined];
49036
4680c4046814 further refinement of command status, to accomodate forked proofs;
wenzelm
parents: 49012
diff changeset
   159
              val _ =
49041
9edfd36a0355 more informative error message from failed goal forks (violating old-style TTY protocol!);
wenzelm
parents: 49037
diff changeset
   160
                (case result of
9edfd36a0355 more informative error message from failed goal forks (violating old-style TTY protocol!);
wenzelm
parents: 49037
diff changeset
   161
                  Exn.Res _ => ()
9edfd36a0355 more informative error message from failed goal forks (violating old-style TTY protocol!);
wenzelm
parents: 49037
diff changeset
   162
                | Exn.Exn exn =>
49830
28d207ba9340 no special treatment of errors inside goal forks without transaction id, to avoid duplication in plain build with sequential log, for example;
wenzelm
parents: 49829
diff changeset
   163
                    if id = 0 orelse Exn.is_interrupt exn then ()
49829
2bc5924b117f do not treat interrupt as error here, to avoid confusion in log etc.;
wenzelm
parents: 49061
diff changeset
   164
                    else
2bc5924b117f do not treat interrupt as error here, to avoid confusion in log etc.;
wenzelm
parents: 49061
diff changeset
   165
                      (status task [Isabelle_Markup.failed];
2bc5924b117f do not treat interrupt as error here, to avoid confusion in log etc.;
wenzelm
parents: 49061
diff changeset
   166
                       Output.report (Markup.markup_only Isabelle_Markup.bad);
2bc5924b117f do not treat interrupt as error here, to avoid confusion in log etc.;
wenzelm
parents: 49061
diff changeset
   167
                       Output.error_msg (ML_Compiler.exn_message exn)));
49061
7449b804073b central management of forked goals wrt. transaction id;
wenzelm
parents: 49041
diff changeset
   168
              val _ = count_forked ~1;
49036
4680c4046814 further refinement of command status, to accomodate forked proofs;
wenzelm
parents: 49012
diff changeset
   169
            in Exn.release result end);
4680c4046814 further refinement of command status, to accomodate forked proofs;
wenzelm
parents: 49012
diff changeset
   170
      val _ = status (Future.task_of future) [Isabelle_Markup.forked];
49061
7449b804073b central management of forked goals wrt. transaction id;
wenzelm
parents: 49041
diff changeset
   171
      val _ = register_forked id future;
41703
d27950860514 parallelization of nested Isar proofs is subject to Goal.parallel_proofs_threshold;
wenzelm
parents: 41683
diff changeset
   172
    in future end) ();
29448
34b9652b2f45 added Goal.future_enabled abstraction -- now also checks that this is already
wenzelm
parents: 29435
diff changeset
   173
41677
fa0da47131d2 more specific Goal.fork_name;
wenzelm
parents: 41674
diff changeset
   174
fun fork e = fork_name "Goal.fork" e;
fa0da47131d2 more specific Goal.fork_name;
wenzelm
parents: 41674
diff changeset
   175
49061
7449b804073b central management of forked goals wrt. transaction id;
wenzelm
parents: 49041
diff changeset
   176
fun forked_count () = #1 (Synchronized.value forked_proofs);
7449b804073b central management of forked goals wrt. transaction id;
wenzelm
parents: 49041
diff changeset
   177
7449b804073b central management of forked goals wrt. transaction id;
wenzelm
parents: 49041
diff changeset
   178
fun peek_futures id =
7449b804073b central management of forked goals wrt. transaction id;
wenzelm
parents: 49041
diff changeset
   179
  Inttab.lookup_list (#3 (Synchronized.value forked_proofs)) id;
7449b804073b central management of forked goals wrt. transaction id;
wenzelm
parents: 49041
diff changeset
   180
7449b804073b central management of forked goals wrt. transaction id;
wenzelm
parents: 49041
diff changeset
   181
fun cancel_futures () =
7449b804073b central management of forked goals wrt. transaction id;
wenzelm
parents: 49041
diff changeset
   182
  Synchronized.change forked_proofs (fn (m, groups, tab) =>
7449b804073b central management of forked goals wrt. transaction id;
wenzelm
parents: 49041
diff changeset
   183
    (List.app Future.cancel_group groups; (0, [], Inttab.empty)));
7449b804073b central management of forked goals wrt. transaction id;
wenzelm
parents: 49041
diff changeset
   184
7449b804073b central management of forked goals wrt. transaction id;
wenzelm
parents: 49041
diff changeset
   185
end;
7449b804073b central management of forked goals wrt. transaction id;
wenzelm
parents: 49041
diff changeset
   186
41677
fa0da47131d2 more specific Goal.fork_name;
wenzelm
parents: 41674
diff changeset
   187
41703
d27950860514 parallelization of nested Isar proofs is subject to Goal.parallel_proofs_threshold;
wenzelm
parents: 41683
diff changeset
   188
(* scheduling parameters *)
d27950860514 parallelization of nested Isar proofs is subject to Goal.parallel_proofs_threshold;
wenzelm
parents: 41683
diff changeset
   189
32738
15bb09ca0378 explicit indication of Unsynchronized.ref;
wenzelm
parents: 32365
diff changeset
   190
val parallel_proofs = Unsynchronized.ref 1;
41819
2d84831dc1a0 scale parallel_proofs_threshold with max_threads_value to improve saturation of cores;
wenzelm
parents: 41776
diff changeset
   191
val parallel_proofs_threshold = Unsynchronized.ref 50;
29448
34b9652b2f45 added Goal.future_enabled abstraction -- now also checks that this is already
wenzelm
parents: 29435
diff changeset
   192
49012
8686c36fa27d refined treatment of forked proofs at transaction boundaries, including proof commands (see also 7ee000ce5390);
wenzelm
parents: 49009
diff changeset
   193
fun future_enabled_level n =
8686c36fa27d refined treatment of forked proofs at transaction boundaries, including proof commands (see also 7ee000ce5390);
wenzelm
parents: 49009
diff changeset
   194
  Multithreading.enabled () andalso ! parallel_proofs >= n andalso
41703
d27950860514 parallelization of nested Isar proofs is subject to Goal.parallel_proofs_threshold;
wenzelm
parents: 41683
diff changeset
   195
  is_some (Future.worker_task ());
32061
11f8ee55662d parallel_proofs: more fine-grained control with optional parallel checking of nested Isar proofs;
wenzelm
parents: 32058
diff changeset
   196
49012
8686c36fa27d refined treatment of forked proofs at transaction boundaries, including proof commands (see also 7ee000ce5390);
wenzelm
parents: 49009
diff changeset
   197
fun future_enabled () = future_enabled_level 1;
8686c36fa27d refined treatment of forked proofs at transaction boundaries, including proof commands (see also 7ee000ce5390);
wenzelm
parents: 49009
diff changeset
   198
8686c36fa27d refined treatment of forked proofs at transaction boundaries, including proof commands (see also 7ee000ce5390);
wenzelm
parents: 49009
diff changeset
   199
fun future_enabled_nested n =
8686c36fa27d refined treatment of forked proofs at transaction boundaries, including proof commands (see also 7ee000ce5390);
wenzelm
parents: 49009
diff changeset
   200
  future_enabled_level n andalso
49061
7449b804073b central management of forked goals wrt. transaction id;
wenzelm
parents: 49041
diff changeset
   201
  forked_count () < ! parallel_proofs_threshold * Multithreading.max_threads_value ();
29448
34b9652b2f45 added Goal.future_enabled abstraction -- now also checks that this is already
wenzelm
parents: 29435
diff changeset
   202
34b9652b2f45 added Goal.future_enabled abstraction -- now also checks that this is already
wenzelm
parents: 29435
diff changeset
   203
28446
a01de3b3fa2e renamed promise to future, tuned related interfaces;
wenzelm
parents: 28363
diff changeset
   204
(* future_result *)
28340
e8597242f649 added promise_result, prove_promise;
wenzelm
parents: 27218
diff changeset
   205
28446
a01de3b3fa2e renamed promise to future, tuned related interfaces;
wenzelm
parents: 28363
diff changeset
   206
fun future_result ctxt result prop =
28340
e8597242f649 added promise_result, prove_promise;
wenzelm
parents: 27218
diff changeset
   207
  let
42360
da8817d01e7c modernized structure Proof_Context;
wenzelm
parents: 41819
diff changeset
   208
    val thy = Proof_Context.theory_of ctxt;
28340
e8597242f649 added promise_result, prove_promise;
wenzelm
parents: 27218
diff changeset
   209
    val _ = Context.reject_draft thy;
e8597242f649 added promise_result, prove_promise;
wenzelm
parents: 27218
diff changeset
   210
    val cert = Thm.cterm_of thy;
e8597242f649 added promise_result, prove_promise;
wenzelm
parents: 27218
diff changeset
   211
    val certT = Thm.ctyp_of thy;
e8597242f649 added promise_result, prove_promise;
wenzelm
parents: 27218
diff changeset
   212
30473
e0b66c11e7e4 Assumption.all_prems_of, Assumption.all_assms_of;
wenzelm
parents: 29448
diff changeset
   213
    val assms = Assumption.all_assms_of ctxt;
28340
e8597242f649 added promise_result, prove_promise;
wenzelm
parents: 27218
diff changeset
   214
    val As = map Thm.term_of assms;
e8597242f649 added promise_result, prove_promise;
wenzelm
parents: 27218
diff changeset
   215
e8597242f649 added promise_result, prove_promise;
wenzelm
parents: 27218
diff changeset
   216
    val xs = map Free (fold Term.add_frees (prop :: As) []);
e8597242f649 added promise_result, prove_promise;
wenzelm
parents: 27218
diff changeset
   217
    val fixes = map cert xs;
e8597242f649 added promise_result, prove_promise;
wenzelm
parents: 27218
diff changeset
   218
e8597242f649 added promise_result, prove_promise;
wenzelm
parents: 27218
diff changeset
   219
    val tfrees = fold Term.add_tfrees (prop :: As) [];
e8597242f649 added promise_result, prove_promise;
wenzelm
parents: 27218
diff changeset
   220
    val instT = map (fn (a, S) => (certT (TVar ((a, 0), S)), certT (TFree (a, S)))) tfrees;
e8597242f649 added promise_result, prove_promise;
wenzelm
parents: 27218
diff changeset
   221
e8597242f649 added promise_result, prove_promise;
wenzelm
parents: 27218
diff changeset
   222
    val global_prop =
45344
e209da839ff4 added Logic.varify_types_global/unvarify_types_global, which avoids somewhat expensive Term.map_types;
wenzelm
parents: 44302
diff changeset
   223
      cert (Logic.varify_types_global (fold_rev Logic.all xs (Logic.list_implies (As, prop))))
32056
f4b74cbecdaf future_result: explicitly impose Variable.sorts_of again;
wenzelm
parents: 30473
diff changeset
   224
      |> Thm.weaken_sorts (Variable.sorts_of ctxt);
28973
c549650d1442 future proofs: pass actual futures to facilitate composite computations;
wenzelm
parents: 28619
diff changeset
   225
    val global_result = result |> Future.map
33768
bba9eac8aa25 future_result: purge flexflex pairs, which should normally be trivial anyway -- prevent Thm.future_result from complaining about tpairs;
wenzelm
parents: 32788
diff changeset
   226
      (Drule.flexflex_unique #>
bba9eac8aa25 future_result: purge flexflex pairs, which should normally be trivial anyway -- prevent Thm.future_result from complaining about tpairs;
wenzelm
parents: 32788
diff changeset
   227
        Thm.adjust_maxidx_thm ~1 #>
28973
c549650d1442 future proofs: pass actual futures to facilitate composite computations;
wenzelm
parents: 28619
diff changeset
   228
        Drule.implies_intr_list assms #>
c549650d1442 future proofs: pass actual futures to facilitate composite computations;
wenzelm
parents: 28619
diff changeset
   229
        Drule.forall_intr_list fixes #>
36613
f3157c288aca simplified primitive Thm.future: more direct theory check, do not hardwire strip_shyps here;
wenzelm
parents: 36610
diff changeset
   230
        Thm.generalize (map #1 tfrees, []) 0 #>
f3157c288aca simplified primitive Thm.future: more direct theory check, do not hardwire strip_shyps here;
wenzelm
parents: 36610
diff changeset
   231
        Thm.strip_shyps);
28340
e8597242f649 added promise_result, prove_promise;
wenzelm
parents: 27218
diff changeset
   232
    val local_result =
32056
f4b74cbecdaf future_result: explicitly impose Variable.sorts_of again;
wenzelm
parents: 30473
diff changeset
   233
      Thm.future global_result global_prop
28340
e8597242f649 added promise_result, prove_promise;
wenzelm
parents: 27218
diff changeset
   234
      |> Thm.instantiate (instT, [])
e8597242f649 added promise_result, prove_promise;
wenzelm
parents: 27218
diff changeset
   235
      |> Drule.forall_elim_list fixes
e8597242f649 added promise_result, prove_promise;
wenzelm
parents: 27218
diff changeset
   236
      |> fold (Thm.elim_implies o Thm.assume) assms;
e8597242f649 added promise_result, prove_promise;
wenzelm
parents: 27218
diff changeset
   237
  in local_result end;
e8597242f649 added promise_result, prove_promise;
wenzelm
parents: 27218
diff changeset
   238
e8597242f649 added promise_result, prove_promise;
wenzelm
parents: 27218
diff changeset
   239
18027
09ab79d4e8e1 renamed Goal constant to prop, more general protect/unprotect interfaces;
wenzelm
parents: 17986
diff changeset
   240
09ab79d4e8e1 renamed Goal constant to prop, more general protect/unprotect interfaces;
wenzelm
parents: 17986
diff changeset
   241
(** tactical theorem proving **)
09ab79d4e8e1 renamed Goal constant to prop, more general protect/unprotect interfaces;
wenzelm
parents: 17986
diff changeset
   242
23356
dbe3731241c3 renamed prove_raw to prove_internal;
wenzelm
parents: 23237
diff changeset
   243
(* prove_internal -- minimal checks, no normalization of result! *)
20250
c3f209752749 prove: proper assumption context, more tactic arguments;
wenzelm
parents: 20228
diff changeset
   244
23356
dbe3731241c3 renamed prove_raw to prove_internal;
wenzelm
parents: 23237
diff changeset
   245
fun prove_internal casms cprop tac =
20250
c3f209752749 prove: proper assumption context, more tactic arguments;
wenzelm
parents: 20228
diff changeset
   246
  (case SINGLE (tac (map Assumption.assume casms)) (init cprop) of
32197
bc341bbe4417 Goal.finish: explicit context for printing;
wenzelm
parents: 32187
diff changeset
   247
    SOME th => Drule.implies_intr_list casms
bc341bbe4417 Goal.finish: explicit context for printing;
wenzelm
parents: 32187
diff changeset
   248
      (finish (Syntax.init_pretty_global (Thm.theory_of_thm th)) th)
38875
c7a66b584147 tuned messages: discontinued spurious full-stops (messages are occasionally composed unexpectedly);
wenzelm
parents: 38236
diff changeset
   249
  | NONE => error "Tactic failed");
20250
c3f209752749 prove: proper assumption context, more tactic arguments;
wenzelm
parents: 20228
diff changeset
   250
c3f209752749 prove: proper assumption context, more tactic arguments;
wenzelm
parents: 20228
diff changeset
   251
28340
e8597242f649 added promise_result, prove_promise;
wenzelm
parents: 27218
diff changeset
   252
(* prove_common etc. *)
17986
0450847646c3 prove_raw: cterms, explicit asms;
wenzelm
parents: 17983
diff changeset
   253
28340
e8597242f649 added promise_result, prove_promise;
wenzelm
parents: 27218
diff changeset
   254
fun prove_common immediate ctxt xs asms props tac =
17980
788836292b1a Internal goals.
wenzelm
parents:
diff changeset
   255
  let
42360
da8817d01e7c modernized structure Proof_Context;
wenzelm
parents: 41819
diff changeset
   256
    val thy = Proof_Context.theory_of ctxt;
26939
1035c89b4c02 moved global pretty/string_of functions from Sign to Syntax;
wenzelm
parents: 26713
diff changeset
   257
    val string_of_term = Syntax.string_of_term ctxt;
20056
0698a403a066 prove/prove_multi: context;
wenzelm
parents: 19862
diff changeset
   258
28355
b9d9360e2440 prove: error with original thread position;
wenzelm
parents: 28341
diff changeset
   259
    val pos = Position.thread_data ();
20250
c3f209752749 prove: proper assumption context, more tactic arguments;
wenzelm
parents: 20228
diff changeset
   260
    fun err msg = cat_error msg
c3f209752749 prove: proper assumption context, more tactic arguments;
wenzelm
parents: 20228
diff changeset
   261
      ("The error(s) above occurred for the goal statement:\n" ^
28355
b9d9360e2440 prove: error with original thread position;
wenzelm
parents: 28341
diff changeset
   262
        string_of_term (Logic.list_implies (asms, Logic.mk_conjunction_list props)) ^
48992
0518bf89c777 renamed Position.str_of to Position.here;
wenzelm
parents: 47415
diff changeset
   263
        (case Position.here pos of "" => "" | s => "\n" ^ s));
17980
788836292b1a Internal goals.
wenzelm
parents:
diff changeset
   264
20250
c3f209752749 prove: proper assumption context, more tactic arguments;
wenzelm
parents: 20228
diff changeset
   265
    fun cert_safe t = Thm.cterm_of thy (Envir.beta_norm (Term.no_dummy_patterns t))
17980
788836292b1a Internal goals.
wenzelm
parents:
diff changeset
   266
      handle TERM (msg, _) => err msg | TYPE (msg, _, _) => err msg;
20250
c3f209752749 prove: proper assumption context, more tactic arguments;
wenzelm
parents: 20228
diff changeset
   267
    val casms = map cert_safe asms;
c3f209752749 prove: proper assumption context, more tactic arguments;
wenzelm
parents: 20228
diff changeset
   268
    val cprops = map cert_safe props;
17980
788836292b1a Internal goals.
wenzelm
parents:
diff changeset
   269
20250
c3f209752749 prove: proper assumption context, more tactic arguments;
wenzelm
parents: 20228
diff changeset
   270
    val (prems, ctxt') = ctxt
c3f209752749 prove: proper assumption context, more tactic arguments;
wenzelm
parents: 20228
diff changeset
   271
      |> Variable.add_fixes_direct xs
27218
4548c83cd508 prove: full Variable.declare_term, including constraints;
wenzelm
parents: 26939
diff changeset
   272
      |> fold Variable.declare_term (asms @ props)
26713
1c6181def1d0 prove_global: Variable.set_body true, pass context;
wenzelm
parents: 26628
diff changeset
   273
      |> Assumption.add_assumes casms
1c6181def1d0 prove_global: Variable.set_body true, pass context;
wenzelm
parents: 26628
diff changeset
   274
      ||> Variable.set_body true;
28619
89f9dd800a22 prove_common: include all sorts from context into statement, check shyps of result;
wenzelm
parents: 28446
diff changeset
   275
    val sorts = Variable.sorts_of ctxt';
17980
788836292b1a Internal goals.
wenzelm
parents:
diff changeset
   276
28619
89f9dd800a22 prove_common: include all sorts from context into statement, check shyps of result;
wenzelm
parents: 28446
diff changeset
   277
    val stmt = Thm.weaken_sorts sorts (Conjunction.mk_conjunction_balanced cprops);
28340
e8597242f649 added promise_result, prove_promise;
wenzelm
parents: 27218
diff changeset
   278
e8597242f649 added promise_result, prove_promise;
wenzelm
parents: 27218
diff changeset
   279
    fun result () =
e8597242f649 added promise_result, prove_promise;
wenzelm
parents: 27218
diff changeset
   280
      (case SINGLE (tac {prems = prems, context = ctxt'}) (init stmt) of
38875
c7a66b584147 tuned messages: discontinued spurious full-stops (messages are occasionally composed unexpectedly);
wenzelm
parents: 38236
diff changeset
   281
        NONE => err "Tactic failed"
28340
e8597242f649 added promise_result, prove_promise;
wenzelm
parents: 27218
diff changeset
   282
      | SOME st =>
32197
bc341bbe4417 Goal.finish: explicit context for printing;
wenzelm
parents: 32187
diff changeset
   283
          let val res = finish ctxt' st handle THM (msg, _, _) => err msg in
28619
89f9dd800a22 prove_common: include all sorts from context into statement, check shyps of result;
wenzelm
parents: 28446
diff changeset
   284
            if Unify.matches_list thy [Thm.term_of stmt] [Thm.prop_of res]
89f9dd800a22 prove_common: include all sorts from context into statement, check shyps of result;
wenzelm
parents: 28446
diff changeset
   285
            then Thm.check_shyps sorts res
28340
e8597242f649 added promise_result, prove_promise;
wenzelm
parents: 27218
diff changeset
   286
            else err ("Proved a different theorem: " ^ string_of_term (Thm.prop_of res))
e8597242f649 added promise_result, prove_promise;
wenzelm
parents: 27218
diff changeset
   287
          end);
e8597242f649 added promise_result, prove_promise;
wenzelm
parents: 27218
diff changeset
   288
    val res =
29448
34b9652b2f45 added Goal.future_enabled abstraction -- now also checks that this is already
wenzelm
parents: 29435
diff changeset
   289
      if immediate orelse #maxidx (Thm.rep_cterm stmt) >= 0 orelse not (future_enabled ())
29088
95a239a5e055 future proofs: more robust check via Future.enabled;
wenzelm
parents: 28973
diff changeset
   290
      then result ()
37186
349e9223c685 explicit markup for forked goals, as indicated by Goal.fork;
wenzelm
parents: 36613
diff changeset
   291
      else future_result ctxt' (fork result) (Thm.term_of stmt);
17980
788836292b1a Internal goals.
wenzelm
parents:
diff changeset
   292
  in
28340
e8597242f649 added promise_result, prove_promise;
wenzelm
parents: 27218
diff changeset
   293
    Conjunction.elim_balanced (length props) res
20290
3f886c176c9b normalized Proof.context/method type aliases;
wenzelm
parents: 20260
diff changeset
   294
    |> map (Assumption.export false ctxt' ctxt)
20056
0698a403a066 prove/prove_multi: context;
wenzelm
parents: 19862
diff changeset
   295
    |> Variable.export ctxt' ctxt
20250
c3f209752749 prove: proper assumption context, more tactic arguments;
wenzelm
parents: 20228
diff changeset
   296
    |> map Drule.zero_var_indexes
17980
788836292b1a Internal goals.
wenzelm
parents:
diff changeset
   297
  end;
788836292b1a Internal goals.
wenzelm
parents:
diff changeset
   298
28341
383f512314b9 prove_multi: immediate;
wenzelm
parents: 28340
diff changeset
   299
val prove_multi = prove_common true;
17980
788836292b1a Internal goals.
wenzelm
parents:
diff changeset
   300
28446
a01de3b3fa2e renamed promise to future, tuned related interfaces;
wenzelm
parents: 28363
diff changeset
   301
fun prove_future ctxt xs asms prop tac = hd (prove_common false ctxt xs asms [prop] tac);
28340
e8597242f649 added promise_result, prove_promise;
wenzelm
parents: 27218
diff changeset
   302
fun prove ctxt xs asms prop tac = hd (prove_common true ctxt xs asms [prop] tac);
20056
0698a403a066 prove/prove_multi: context;
wenzelm
parents: 19862
diff changeset
   303
0698a403a066 prove/prove_multi: context;
wenzelm
parents: 19862
diff changeset
   304
fun prove_global thy xs asms prop tac =
42360
da8817d01e7c modernized structure Proof_Context;
wenzelm
parents: 41819
diff changeset
   305
  Drule.export_without_context (prove (Proof_Context.init_global thy) xs asms prop tac);
18027
09ab79d4e8e1 renamed Goal constant to prop, more general protect/unprotect interfaces;
wenzelm
parents: 17986
diff changeset
   306
09ab79d4e8e1 renamed Goal constant to prop, more general protect/unprotect interfaces;
wenzelm
parents: 17986
diff changeset
   307
17980
788836292b1a Internal goals.
wenzelm
parents:
diff changeset
   308
21687
f689f729afab reorganized structure Goal vs. Tactic;
wenzelm
parents: 21604
diff changeset
   309
(** goal structure **)
f689f729afab reorganized structure Goal vs. Tactic;
wenzelm
parents: 21604
diff changeset
   310
f689f729afab reorganized structure Goal vs. Tactic;
wenzelm
parents: 21604
diff changeset
   311
(* nested goals *)
18207
9edbeda7e39a tuned norm_hhf_protected;
wenzelm
parents: 18180
diff changeset
   312
19184
3e30297e1300 added extract, retrofit;
wenzelm
parents: 18678
diff changeset
   313
fun extract i n st =
3e30297e1300 added extract, retrofit;
wenzelm
parents: 18678
diff changeset
   314
  (if i < 1 orelse n < 1 orelse i + n - 1 > Thm.nprems_of st then Seq.empty
3e30297e1300 added extract, retrofit;
wenzelm
parents: 18678
diff changeset
   315
   else if n = 1 then Seq.single (Thm.cprem_of st i)
23418
c195f6f13769 balanced conjunctions;
wenzelm
parents: 23414
diff changeset
   316
   else
c195f6f13769 balanced conjunctions;
wenzelm
parents: 23414
diff changeset
   317
     Seq.single (Conjunction.mk_conjunction_balanced (map (Thm.cprem_of st) (i upto i + n - 1))))
20260
990dbc007ca6 Thm.adjust_maxidx;
wenzelm
parents: 20250
diff changeset
   318
  |> Seq.map (Thm.adjust_maxidx_cterm ~1 #> init);
17980
788836292b1a Internal goals.
wenzelm
parents:
diff changeset
   319
19221
wenzelm
parents: 19191
diff changeset
   320
fun retrofit i n st' st =
wenzelm
parents: 19191
diff changeset
   321
  (if n = 1 then st
23418
c195f6f13769 balanced conjunctions;
wenzelm
parents: 23414
diff changeset
   322
   else st |> Drule.with_subgoal i (Conjunction.uncurry_balanced n))
19221
wenzelm
parents: 19191
diff changeset
   323
  |> Thm.compose_no_flatten false (conclude st', Thm.nprems_of st') i;
18207
9edbeda7e39a tuned norm_hhf_protected;
wenzelm
parents: 18180
diff changeset
   324
17980
788836292b1a Internal goals.
wenzelm
parents:
diff changeset
   325
fun SELECT_GOAL tac i st =
19191
56cda3ec2ef8 SELECT_GOAL: fixed trivial case;
wenzelm
parents: 19184
diff changeset
   326
  if Thm.nprems_of st = 1 andalso i = 1 then tac st
19184
3e30297e1300 added extract, retrofit;
wenzelm
parents: 18678
diff changeset
   327
  else Seq.lifts (retrofit i 1) (Seq.maps tac (extract i 1 st)) st;
17980
788836292b1a Internal goals.
wenzelm
parents:
diff changeset
   328
21687
f689f729afab reorganized structure Goal vs. Tactic;
wenzelm
parents: 21604
diff changeset
   329
f689f729afab reorganized structure Goal vs. Tactic;
wenzelm
parents: 21604
diff changeset
   330
(* multiple goals *)
f689f729afab reorganized structure Goal vs. Tactic;
wenzelm
parents: 21604
diff changeset
   331
23418
c195f6f13769 balanced conjunctions;
wenzelm
parents: 23414
diff changeset
   332
fun precise_conjunction_tac 0 i = eq_assume_tac i
c195f6f13769 balanced conjunctions;
wenzelm
parents: 23414
diff changeset
   333
  | precise_conjunction_tac 1 i = SUBGOAL (K all_tac) i
c195f6f13769 balanced conjunctions;
wenzelm
parents: 23414
diff changeset
   334
  | precise_conjunction_tac n i = PRIMITIVE (Drule.with_subgoal i (Conjunction.curry_balanced n));
23414
927203ad4b3a tuned conjunction tactics: slightly smaller proof terms;
wenzelm
parents: 23356
diff changeset
   335
23418
c195f6f13769 balanced conjunctions;
wenzelm
parents: 23414
diff changeset
   336
val adhoc_conjunction_tac = REPEAT_ALL_NEW
c195f6f13769 balanced conjunctions;
wenzelm
parents: 23414
diff changeset
   337
  (SUBGOAL (fn (goal, i) =>
c195f6f13769 balanced conjunctions;
wenzelm
parents: 23414
diff changeset
   338
    if can Logic.dest_conjunction goal then rtac Conjunction.conjunctionI i
c195f6f13769 balanced conjunctions;
wenzelm
parents: 23414
diff changeset
   339
    else no_tac));
21687
f689f729afab reorganized structure Goal vs. Tactic;
wenzelm
parents: 21604
diff changeset
   340
23418
c195f6f13769 balanced conjunctions;
wenzelm
parents: 23414
diff changeset
   341
val conjunction_tac = SUBGOAL (fn (goal, i) =>
c195f6f13769 balanced conjunctions;
wenzelm
parents: 23414
diff changeset
   342
  precise_conjunction_tac (length (Logic.dest_conjunctions goal)) i ORELSE
c195f6f13769 balanced conjunctions;
wenzelm
parents: 23414
diff changeset
   343
  TRY (adhoc_conjunction_tac i));
21687
f689f729afab reorganized structure Goal vs. Tactic;
wenzelm
parents: 21604
diff changeset
   344
23418
c195f6f13769 balanced conjunctions;
wenzelm
parents: 23414
diff changeset
   345
val recover_conjunction_tac = PRIMITIVE (fn th =>
c195f6f13769 balanced conjunctions;
wenzelm
parents: 23414
diff changeset
   346
  Conjunction.uncurry_balanced (Thm.nprems_of th) th);
23414
927203ad4b3a tuned conjunction tactics: slightly smaller proof terms;
wenzelm
parents: 23356
diff changeset
   347
927203ad4b3a tuned conjunction tactics: slightly smaller proof terms;
wenzelm
parents: 23356
diff changeset
   348
fun PRECISE_CONJUNCTS n tac =
927203ad4b3a tuned conjunction tactics: slightly smaller proof terms;
wenzelm
parents: 23356
diff changeset
   349
  SELECT_GOAL (precise_conjunction_tac n 1
927203ad4b3a tuned conjunction tactics: slightly smaller proof terms;
wenzelm
parents: 23356
diff changeset
   350
    THEN tac
23418
c195f6f13769 balanced conjunctions;
wenzelm
parents: 23414
diff changeset
   351
    THEN recover_conjunction_tac);
23414
927203ad4b3a tuned conjunction tactics: slightly smaller proof terms;
wenzelm
parents: 23356
diff changeset
   352
21687
f689f729afab reorganized structure Goal vs. Tactic;
wenzelm
parents: 21604
diff changeset
   353
fun CONJUNCTS tac =
f689f729afab reorganized structure Goal vs. Tactic;
wenzelm
parents: 21604
diff changeset
   354
  SELECT_GOAL (conjunction_tac 1
f689f729afab reorganized structure Goal vs. Tactic;
wenzelm
parents: 21604
diff changeset
   355
    THEN tac
23418
c195f6f13769 balanced conjunctions;
wenzelm
parents: 23414
diff changeset
   356
    THEN recover_conjunction_tac);
21687
f689f729afab reorganized structure Goal vs. Tactic;
wenzelm
parents: 21604
diff changeset
   357
f689f729afab reorganized structure Goal vs. Tactic;
wenzelm
parents: 21604
diff changeset
   358
f689f729afab reorganized structure Goal vs. Tactic;
wenzelm
parents: 21604
diff changeset
   359
(* hhf normal form *)
f689f729afab reorganized structure Goal vs. Tactic;
wenzelm
parents: 21604
diff changeset
   360
f689f729afab reorganized structure Goal vs. Tactic;
wenzelm
parents: 21604
diff changeset
   361
val norm_hhf_tac =
f689f729afab reorganized structure Goal vs. Tactic;
wenzelm
parents: 21604
diff changeset
   362
  rtac Drule.asm_rl  (*cheap approximation -- thanks to builtin Logic.flatten_params*)
f689f729afab reorganized structure Goal vs. Tactic;
wenzelm
parents: 21604
diff changeset
   363
  THEN' SUBGOAL (fn (t, i) =>
f689f729afab reorganized structure Goal vs. Tactic;
wenzelm
parents: 21604
diff changeset
   364
    if Drule.is_norm_hhf t then all_tac
41228
e1fce873b814 renamed structure MetaSimplifier to raw_Simplifer, to emphasize its meaning;
wenzelm
parents: 39125
diff changeset
   365
    else rewrite_goal_tac Drule.norm_hhf_eqs i);
21687
f689f729afab reorganized structure Goal vs. Tactic;
wenzelm
parents: 21604
diff changeset
   366
25301
24e027f55f45 removed unused compose_hhf, comp_hhf;
wenzelm
parents: 23536
diff changeset
   367
fun compose_hhf_tac th i st =
24e027f55f45 removed unused compose_hhf, comp_hhf;
wenzelm
parents: 23536
diff changeset
   368
  PRIMSEQ (Thm.bicompose false (false, Drule.lift_all (Thm.cprem_of st i) th, 0) i) st;
21687
f689f729afab reorganized structure Goal vs. Tactic;
wenzelm
parents: 21604
diff changeset
   369
23237
ac9d126456e1 added assume_rule_tac;
wenzelm
parents: 22902
diff changeset
   370
ac9d126456e1 added assume_rule_tac;
wenzelm
parents: 22902
diff changeset
   371
(* non-atomic goal assumptions *)
ac9d126456e1 added assume_rule_tac;
wenzelm
parents: 22902
diff changeset
   372
23356
dbe3731241c3 renamed prove_raw to prove_internal;
wenzelm
parents: 23237
diff changeset
   373
fun non_atomic (Const ("==>", _) $ _ $ _) = true
dbe3731241c3 renamed prove_raw to prove_internal;
wenzelm
parents: 23237
diff changeset
   374
  | non_atomic (Const ("all", _) $ _) = true
dbe3731241c3 renamed prove_raw to prove_internal;
wenzelm
parents: 23237
diff changeset
   375
  | non_atomic _ = false;
dbe3731241c3 renamed prove_raw to prove_internal;
wenzelm
parents: 23237
diff changeset
   376
23237
ac9d126456e1 added assume_rule_tac;
wenzelm
parents: 22902
diff changeset
   377
fun assume_rule_tac ctxt = norm_hhf_tac THEN' CSUBGOAL (fn (goal, i) =>
ac9d126456e1 added assume_rule_tac;
wenzelm
parents: 22902
diff changeset
   378
  let
42495
1af81b70cf09 clarified Variable.focus vs. Variable.focus_cterm -- eliminated clone;
wenzelm
parents: 42371
diff changeset
   379
    val ((_, goal'), ctxt') = Variable.focus_cterm goal ctxt;
23237
ac9d126456e1 added assume_rule_tac;
wenzelm
parents: 22902
diff changeset
   380
    val goal'' = Drule.cterm_rule (singleton (Variable.export ctxt' ctxt)) goal';
23356
dbe3731241c3 renamed prove_raw to prove_internal;
wenzelm
parents: 23237
diff changeset
   381
    val Rs = filter (non_atomic o Thm.term_of) (Drule.strip_imp_prems goal'');
23237
ac9d126456e1 added assume_rule_tac;
wenzelm
parents: 22902
diff changeset
   382
    val tacs = Rs |> map (fn R =>
41228
e1fce873b814 renamed structure MetaSimplifier to raw_Simplifer, to emphasize its meaning;
wenzelm
parents: 39125
diff changeset
   383
      Tactic.etac (Raw_Simplifier.norm_hhf (Thm.trivial R)) THEN_ALL_NEW assume_tac);
23237
ac9d126456e1 added assume_rule_tac;
wenzelm
parents: 22902
diff changeset
   384
  in fold_rev (curry op APPEND') tacs (K no_tac) i end);
ac9d126456e1 added assume_rule_tac;
wenzelm
parents: 22902
diff changeset
   385
32365
9b74d0339c44 added PARALLEL_CHOICE, PARALLEL_GOALS;
wenzelm
parents: 32255
diff changeset
   386
9b74d0339c44 added PARALLEL_CHOICE, PARALLEL_GOALS;
wenzelm
parents: 32255
diff changeset
   387
(* parallel tacticals *)
9b74d0339c44 added PARALLEL_CHOICE, PARALLEL_GOALS;
wenzelm
parents: 32255
diff changeset
   388
9b74d0339c44 added PARALLEL_CHOICE, PARALLEL_GOALS;
wenzelm
parents: 32255
diff changeset
   389
(*parallel choice of single results*)
9b74d0339c44 added PARALLEL_CHOICE, PARALLEL_GOALS;
wenzelm
parents: 32255
diff changeset
   390
fun PARALLEL_CHOICE tacs st =
9b74d0339c44 added PARALLEL_CHOICE, PARALLEL_GOALS;
wenzelm
parents: 32255
diff changeset
   391
  (case Par_List.get_some (fn tac => SINGLE tac st) tacs of
9b74d0339c44 added PARALLEL_CHOICE, PARALLEL_GOALS;
wenzelm
parents: 32255
diff changeset
   392
    NONE => Seq.empty
9b74d0339c44 added PARALLEL_CHOICE, PARALLEL_GOALS;
wenzelm
parents: 32255
diff changeset
   393
  | SOME st' => Seq.single st');
9b74d0339c44 added PARALLEL_CHOICE, PARALLEL_GOALS;
wenzelm
parents: 32255
diff changeset
   394
9b74d0339c44 added PARALLEL_CHOICE, PARALLEL_GOALS;
wenzelm
parents: 32255
diff changeset
   395
(*parallel refinement of non-schematic goal by single results*)
32788
a65deb8f9434 PARALLEL_GOALS: proper scope for exception FAILED, with dummy argument to prevent its interpretation as variable;
wenzelm
parents: 32738
diff changeset
   396
exception FAILED of unit;
42370
244911efd275 refined PARALLEL_GOALS;
wenzelm
parents: 42360
diff changeset
   397
fun PARALLEL_GOALS tac =
244911efd275 refined PARALLEL_GOALS;
wenzelm
parents: 42360
diff changeset
   398
  Thm.adjust_maxidx_thm ~1 #>
244911efd275 refined PARALLEL_GOALS;
wenzelm
parents: 42360
diff changeset
   399
  (fn st =>
42371
5900f06b4198 enable PARALLEL_GOALS more liberally, unlike forked proofs (cf. 34b9652b2f45);
wenzelm
parents: 42370
diff changeset
   400
    if not (Multithreading.enabled ()) orelse Thm.maxidx_of st >= 0 orelse Thm.nprems_of st <= 1
42370
244911efd275 refined PARALLEL_GOALS;
wenzelm
parents: 42360
diff changeset
   401
    then DETERM tac st
244911efd275 refined PARALLEL_GOALS;
wenzelm
parents: 42360
diff changeset
   402
    else
244911efd275 refined PARALLEL_GOALS;
wenzelm
parents: 42360
diff changeset
   403
      let
244911efd275 refined PARALLEL_GOALS;
wenzelm
parents: 42360
diff changeset
   404
        fun try_tac g =
244911efd275 refined PARALLEL_GOALS;
wenzelm
parents: 42360
diff changeset
   405
          (case SINGLE tac g of
244911efd275 refined PARALLEL_GOALS;
wenzelm
parents: 42360
diff changeset
   406
            NONE => raise FAILED ()
244911efd275 refined PARALLEL_GOALS;
wenzelm
parents: 42360
diff changeset
   407
          | SOME g' => g');
32365
9b74d0339c44 added PARALLEL_CHOICE, PARALLEL_GOALS;
wenzelm
parents: 32255
diff changeset
   408
42370
244911efd275 refined PARALLEL_GOALS;
wenzelm
parents: 42360
diff changeset
   409
        val goals = Drule.strip_imp_prems (Thm.cprop_of st);
244911efd275 refined PARALLEL_GOALS;
wenzelm
parents: 42360
diff changeset
   410
        val results = Par_List.map (try_tac o init) goals;
244911efd275 refined PARALLEL_GOALS;
wenzelm
parents: 42360
diff changeset
   411
      in ALLGOALS (fn i => retrofit i 1 (nth results (i - 1))) st end
244911efd275 refined PARALLEL_GOALS;
wenzelm
parents: 42360
diff changeset
   412
      handle FAILED () => Seq.empty);
32365
9b74d0339c44 added PARALLEL_CHOICE, PARALLEL_GOALS;
wenzelm
parents: 32255
diff changeset
   413
18207
9edbeda7e39a tuned norm_hhf_protected;
wenzelm
parents: 18180
diff changeset
   414
end;
9edbeda7e39a tuned norm_hhf_protected;
wenzelm
parents: 18180
diff changeset
   415
32365
9b74d0339c44 added PARALLEL_CHOICE, PARALLEL_GOALS;
wenzelm
parents: 32255
diff changeset
   416
structure Basic_Goal: BASIC_GOAL = Goal;
9b74d0339c44 added PARALLEL_CHOICE, PARALLEL_GOALS;
wenzelm
parents: 32255
diff changeset
   417
open Basic_Goal;