src/Pure/Isar/proof.ML
author wenzelm
Sat Jul 27 16:35:51 2013 +0200 (2013-07-27)
changeset 52732 b4da1f2ec73f
parent 52641 c56b6fa636e8
child 53189 ee8b8dafef0e
permissions -rw-r--r--
standardized aliases;
wenzelm@5820
     1
(*  Title:      Pure/Isar/proof.ML
wenzelm@5820
     2
    Author:     Markus Wenzel, TU Muenchen
wenzelm@5820
     3
wenzelm@19000
     4
The Isar/VM proof language interpreter: maintains a structured flow of
wenzelm@19000
     5
context elements, goals, refinements, and facts.
wenzelm@5820
     6
*)
wenzelm@5820
     7
wenzelm@5820
     8
signature PROOF =
wenzelm@5820
     9
sig
wenzelm@33031
    10
  type context = Proof.context
wenzelm@23639
    11
  type method = Method.method
wenzelm@5820
    12
  type state
wenzelm@17359
    13
  val init: context -> state
wenzelm@17359
    14
  val level: state -> int
wenzelm@17359
    15
  val assert_bottom: bool -> state -> state
wenzelm@5820
    16
  val context_of: state -> context
wenzelm@5820
    17
  val theory_of: state -> theory
wenzelm@13377
    18
  val map_context: (context -> context) -> state -> state
bulwahn@40642
    19
  val map_context_result : (context -> 'a * context) -> state -> 'a * state
wenzelm@28278
    20
  val map_contexts: (context -> context) -> state -> state
wenzelm@37949
    21
  val propagate_ml_env: state -> state
wenzelm@30757
    22
  val bind_terms: (indexname * term option) list -> state -> state
wenzelm@26251
    23
  val put_thms: bool -> string * thm list option -> state -> state
wenzelm@6091
    24
  val the_facts: state -> thm list
wenzelm@9469
    25
  val the_fact: state -> thm
wenzelm@47068
    26
  val set_facts: thm list -> state -> state
wenzelm@47068
    27
  val reset_facts: state -> state
wenzelm@6891
    28
  val assert_forward: state -> state
wenzelm@17359
    29
  val assert_chain: state -> state
wenzelm@9469
    30
  val assert_forward_or_chain: state -> state
wenzelm@5820
    31
  val assert_backward: state -> state
wenzelm@8206
    32
  val assert_no_chain: state -> state
wenzelm@5820
    33
  val enter_forward: state -> state
wenzelm@24543
    34
  val goal_message: (unit -> Pretty.T) -> state -> state
wenzelm@52641
    35
  val pretty_goal_messages: state -> Pretty.T list
wenzelm@12423
    36
  val pretty_state: int -> state -> Pretty.T list
wenzelm@17112
    37
  val refine: Method.text -> state -> state Seq.seq
wenzelm@17112
    38
  val refine_end: Method.text -> state -> state Seq.seq
wenzelm@18908
    39
  val refine_insert: thm list -> state -> state
wenzelm@17359
    40
  val refine_goals: (context -> thm -> unit) -> context -> thm list -> state -> state Seq.seq
wenzelm@33288
    41
  val raw_goal: state -> {context: context, facts: thm list, goal: thm}
wenzelm@33288
    42
  val goal: state -> {context: context, facts: thm list, goal: thm}
wenzelm@33288
    43
  val simple_goal: state -> {context: context, goal: thm}
wenzelm@38721
    44
  val status_markup: state -> Markup.T
wenzelm@36323
    45
  val let_bind: (term list * term) list -> state -> state
wenzelm@36323
    46
  val let_bind_cmd: (string list * string) list -> state -> state
wenzelm@36505
    47
  val write: Syntax.mode -> (term * mixfix) list -> state -> state
wenzelm@36505
    48
  val write_cmd: Syntax.mode -> (string * mixfix) list -> state -> state
wenzelm@36323
    49
  val fix: (binding * typ option * mixfix) list -> state -> state
wenzelm@36323
    50
  val fix_cmd: (binding * string option * mixfix) list -> state -> state
wenzelm@20224
    51
  val assm: Assumption.export ->
wenzelm@36323
    52
    (Thm.binding * (term * term list) list) list -> state -> state
wenzelm@36323
    53
  val assm_cmd: Assumption.export ->
wenzelm@28084
    54
    (Attrib.binding * (string * string list) list) list -> state -> state
wenzelm@36323
    55
  val assume: (Thm.binding * (term * term list) list) list -> state -> state
wenzelm@36323
    56
  val assume_cmd: (Attrib.binding * (string * string list) list) list -> state -> state
wenzelm@36323
    57
  val presume: (Thm.binding * (term * term list) list) list -> state -> state
wenzelm@36323
    58
  val presume_cmd: (Attrib.binding * (string * string list) list) list -> state -> state
wenzelm@36323
    59
  val def: (Thm.binding * ((binding * mixfix) * (term * term list))) list -> state -> state
wenzelm@36323
    60
  val def_cmd: (Attrib.binding * ((binding * mixfix) * (string * string list))) list -> state -> state
wenzelm@17359
    61
  val chain: state -> state
wenzelm@17359
    62
  val chain_facts: thm list -> state -> state
wenzelm@36323
    63
  val note_thmss: (Thm.binding * (thm list * attribute list) list) list -> state -> state
wenzelm@36323
    64
  val note_thmss_cmd: (Attrib.binding * (Facts.ref * Attrib.src list) list) list -> state -> state
wenzelm@36323
    65
  val from_thmss: ((thm list * attribute list) list) list -> state -> state
wenzelm@36323
    66
  val from_thmss_cmd: ((Facts.ref * Attrib.src list) list) list -> state -> state
wenzelm@36323
    67
  val with_thmss: ((thm list * attribute list) list) list -> state -> state
wenzelm@36323
    68
  val with_thmss_cmd: ((Facts.ref * Attrib.src list) list) list -> state -> state
wenzelm@36323
    69
  val using: ((thm list * attribute list) list) list -> state -> state
wenzelm@36323
    70
  val using_cmd: ((Facts.ref * Attrib.src list) list) list -> state -> state
wenzelm@36323
    71
  val unfolding: ((thm list * attribute list) list) list -> state -> state
wenzelm@36323
    72
  val unfolding_cmd: ((Facts.ref * Attrib.src list) list) list -> state -> state
wenzelm@42496
    73
  val invoke_case: string * binding option list * attribute list -> state -> state
wenzelm@42496
    74
  val invoke_case_cmd: string * binding option list * Attrib.src list -> state -> state
wenzelm@17359
    75
  val begin_block: state -> state
wenzelm@17359
    76
  val next_block: state -> state
wenzelm@20309
    77
  val end_block: state -> state
wenzelm@49042
    78
  val begin_notepad: context -> state
wenzelm@49042
    79
  val end_notepad: state -> context
wenzelm@17112
    80
  val proof: Method.text option -> state -> state Seq.seq
wenzelm@49889
    81
  val proof_results: Method.text_range option -> state -> state Seq.result Seq.seq
wenzelm@49865
    82
  val defer: int -> state -> state
wenzelm@49865
    83
  val prefer: int -> state -> state
wenzelm@17112
    84
  val apply: Method.text -> state -> state Seq.seq
wenzelm@17112
    85
  val apply_end: Method.text -> state -> state Seq.seq
wenzelm@49889
    86
  val apply_results: Method.text_range -> state -> state Seq.result Seq.seq
wenzelm@49889
    87
  val apply_end_results: Method.text_range -> state -> state Seq.result Seq.seq
wenzelm@17359
    88
  val local_goal: (context -> ((string * string) * (string * thm list) list) -> unit) ->
wenzelm@49042
    89
    (context -> 'a -> attribute) ->
wenzelm@45327
    90
    ('b list -> context -> (term list list * (context -> context)) * context) ->
wenzelm@29383
    91
    string -> Method.text option -> (thm list list -> state -> state) ->
haftmann@29581
    92
    ((binding * 'a list) * 'b) list -> state -> state
wenzelm@49889
    93
  val local_qed: Method.text_range option * bool -> state -> state
wenzelm@21442
    94
  val theorem: Method.text option -> (thm list list -> context -> context) ->
wenzelm@36323
    95
    (term * term list) list list -> context -> state
wenzelm@36323
    96
  val theorem_cmd: Method.text option -> (thm list list -> context -> context) ->
wenzelm@21362
    97
    (string * string list) list list -> context -> state
wenzelm@49889
    98
  val global_qed: Method.text_range option * bool -> state -> context
wenzelm@49889
    99
  val local_terminal_proof: Method.text_range * Method.text_range option -> state -> state
wenzelm@29383
   100
  val local_default_proof: state -> state
wenzelm@29383
   101
  val local_immediate_proof: state -> state
wenzelm@29383
   102
  val local_skip_proof: bool -> state -> state
wenzelm@29383
   103
  val local_done_proof: state -> state
wenzelm@49889
   104
  val global_terminal_proof: Method.text_range * Method.text_range option -> state -> context
wenzelm@20363
   105
  val global_default_proof: state -> context
wenzelm@20363
   106
  val global_immediate_proof: state -> context
wenzelm@29383
   107
  val global_skip_proof: bool -> state -> context
wenzelm@20363
   108
  val global_done_proof: state -> context
wenzelm@29383
   109
  val have: Method.text option -> (thm list list -> state -> state) ->
wenzelm@36323
   110
    (Thm.binding * (term * term list) list) list -> bool -> state -> state
wenzelm@36323
   111
  val have_cmd: Method.text option -> (thm list list -> state -> state) ->
wenzelm@28084
   112
    (Attrib.binding * (string * string list) list) list -> bool -> state -> state
wenzelm@29383
   113
  val show: Method.text option -> (thm list list -> state -> state) ->
wenzelm@36323
   114
    (Thm.binding * (term * term list) list) list -> bool -> state -> state
wenzelm@36323
   115
  val show_cmd: Method.text option -> (thm list list -> state -> state) ->
wenzelm@28084
   116
    (Attrib.binding * (string * string list) list) list -> bool -> state -> state
wenzelm@29385
   117
  val schematic_goal: state -> bool
wenzelm@51226
   118
  val is_relevant: state -> bool
wenzelm@51318
   119
  val future_proof: (state -> ('a * context) future) -> state -> 'a future * state
wenzelm@49889
   120
  val local_future_terminal_proof: Method.text_range * Method.text_range option -> bool ->
wenzelm@49866
   121
    state -> state
wenzelm@49889
   122
  val global_future_terminal_proof: Method.text_range * Method.text_range option -> bool ->
wenzelm@49866
   123
    state -> context
wenzelm@5820
   124
end;
wenzelm@5820
   125
wenzelm@13377
   126
structure Proof: PROOF =
wenzelm@5820
   127
struct
wenzelm@5820
   128
wenzelm@33031
   129
type context = Proof.context;
wenzelm@17112
   130
type method = Method.method;
wenzelm@16813
   131
wenzelm@5820
   132
wenzelm@5820
   133
(** proof state **)
wenzelm@5820
   134
wenzelm@17359
   135
(* datatype state *)
wenzelm@5820
   136
wenzelm@17112
   137
datatype mode = Forward | Chain | Backward;
wenzelm@5820
   138
wenzelm@17359
   139
datatype state =
wenzelm@17359
   140
  State of node Stack.T
wenzelm@17359
   141
and node =
wenzelm@7176
   142
  Node of
wenzelm@7176
   143
   {context: context,
wenzelm@7176
   144
    facts: thm list option,
wenzelm@7176
   145
    mode: mode,
wenzelm@17359
   146
    goal: goal option}
wenzelm@17359
   147
and goal =
wenzelm@17359
   148
  Goal of
wenzelm@29346
   149
   {statement: (string * Position.T) * term list list * term,
wenzelm@28410
   150
      (*goal kind and statement (starting with vars), initial proposition*)
wenzelm@25958
   151
    messages: (unit -> Pretty.T) list,    (*persistent messages (hints etc.)*)
wenzelm@25958
   152
    using: thm list,                      (*goal facts*)
wenzelm@25958
   153
    goal: thm,                            (*subgoals ==> statement*)
wenzelm@17859
   154
    before_qed: Method.text option,
wenzelm@18124
   155
    after_qed:
wenzelm@29383
   156
      (thm list list -> state -> state) *
wenzelm@20363
   157
      (thm list list -> context -> context)};
wenzelm@17359
   158
wenzelm@24543
   159
fun make_goal (statement, messages, using, goal, before_qed, after_qed) =
wenzelm@24543
   160
  Goal {statement = statement, messages = messages, using = using, goal = goal,
wenzelm@17859
   161
    before_qed = before_qed, after_qed = after_qed};
wenzelm@5820
   162
wenzelm@7176
   163
fun make_node (context, facts, mode, goal) =
wenzelm@7176
   164
  Node {context = context, facts = facts, mode = mode, goal = goal};
wenzelm@7176
   165
wenzelm@17359
   166
fun map_node f (Node {context, facts, mode, goal}) =
wenzelm@17359
   167
  make_node (f (context, facts, mode, goal));
wenzelm@5820
   168
wenzelm@21727
   169
val init_context =
wenzelm@42360
   170
  Proof_Context.set_stmt true #>
wenzelm@47005
   171
  Proof_Context.map_naming (K Name_Space.local_naming);
wenzelm@21727
   172
wenzelm@21466
   173
fun init ctxt =
wenzelm@21727
   174
  State (Stack.init (make_node (init_context ctxt, NONE, Forward, NONE)));
wenzelm@5820
   175
wenzelm@49011
   176
fun top (State st) = Stack.top st |> (fn Node node => node);
wenzelm@49011
   177
fun map_top f (State st) = State (Stack.map_top (map_node f) st);
wenzelm@28278
   178
fun map_all f (State st) = State (Stack.map_all (map_node f) st);
wenzelm@12045
   179
wenzelm@5820
   180
wenzelm@5820
   181
wenzelm@5820
   182
(** basic proof state operations **)
wenzelm@5820
   183
wenzelm@17359
   184
(* block structure *)
wenzelm@17359
   185
wenzelm@17359
   186
fun open_block (State st) = State (Stack.push st);
wenzelm@17359
   187
wenzelm@18678
   188
fun close_block (State st) = State (Stack.pop st)
wenzelm@47060
   189
  handle List.Empty => error "Unbalanced block parentheses";
wenzelm@17359
   190
wenzelm@17359
   191
fun level (State st) = Stack.level st;
wenzelm@17359
   192
wenzelm@17359
   193
fun assert_bottom b state =
wenzelm@47065
   194
  let val b' = level state <= 2 in
wenzelm@47065
   195
    if b andalso not b' then error "Not at bottom of proof"
wenzelm@47065
   196
    else if not b andalso b' then error "Already at bottom of proof"
wenzelm@17359
   197
    else state
wenzelm@17359
   198
  end;
wenzelm@17359
   199
wenzelm@17359
   200
wenzelm@5820
   201
(* context *)
wenzelm@5820
   202
wenzelm@49011
   203
val context_of = #context o top;
wenzelm@42360
   204
val theory_of = Proof_Context.theory_of o context_of;
wenzelm@5820
   205
wenzelm@47431
   206
fun map_node_context f =
wenzelm@47431
   207
  map_node (fn (ctxt, facts, mode, goal) => (f ctxt, facts, mode, goal));
wenzelm@47431
   208
wenzelm@17359
   209
fun map_context f =
wenzelm@49011
   210
  map_top (fn (ctxt, facts, mode, goal) => (f ctxt, facts, mode, goal));
wenzelm@5820
   211
wenzelm@17359
   212
fun map_context_result f state =
wenzelm@17859
   213
  f (context_of state) ||> (fn ctxt => map_context (K ctxt) state);
wenzelm@5820
   214
wenzelm@28278
   215
fun map_contexts f = map_all (fn (ctxt, facts, mode, goal) => (f ctxt, facts, mode, goal));
wenzelm@28278
   216
wenzelm@37949
   217
fun propagate_ml_env state = map_contexts
wenzelm@37949
   218
  (Context.proof_map (ML_Env.inherit (Context.Proof (context_of state)))) state;
wenzelm@37949
   219
wenzelm@42360
   220
val bind_terms = map_context o Proof_Context.bind_terms;
wenzelm@42360
   221
val put_thms = map_context oo Proof_Context.put_thms;
wenzelm@5820
   222
wenzelm@5820
   223
wenzelm@5820
   224
(* facts *)
wenzelm@5820
   225
wenzelm@49011
   226
val get_facts = #facts o top;
wenzelm@17359
   227
wenzelm@17359
   228
fun the_facts state =
wenzelm@17359
   229
  (case get_facts state of SOME facts => facts
wenzelm@18678
   230
  | NONE => error "No current facts available");
wenzelm@5820
   231
wenzelm@9469
   232
fun the_fact state =
wenzelm@17359
   233
  (case the_facts state of [thm] => thm
wenzelm@18678
   234
  | _ => error "Single theorem expected");
wenzelm@7605
   235
wenzelm@17359
   236
fun put_facts facts =
wenzelm@49011
   237
  map_top (fn (ctxt, _, mode, goal) => (ctxt, facts, mode, goal)) #>
wenzelm@33386
   238
  put_thms true (Auto_Bind.thisN, facts);
wenzelm@5820
   239
wenzelm@47068
   240
val set_facts = put_facts o SOME;
wenzelm@47068
   241
val reset_facts = put_facts NONE;
wenzelm@47068
   242
wenzelm@17359
   243
fun these_factss more_facts (named_factss, state) =
wenzelm@47068
   244
  (named_factss, state |> set_facts (maps snd named_factss @ more_facts));
wenzelm@5820
   245
wenzelm@17359
   246
fun export_facts inner outer =
wenzelm@17359
   247
  (case get_facts inner of
wenzelm@47068
   248
    NONE => reset_facts outer
wenzelm@17359
   249
  | SOME thms =>
wenzelm@17359
   250
      thms
wenzelm@42360
   251
      |> Proof_Context.export (context_of inner) (context_of outer)
wenzelm@47068
   252
      |> (fn ths => set_facts ths outer));
wenzelm@5820
   253
wenzelm@5820
   254
wenzelm@5820
   255
(* mode *)
wenzelm@5820
   256
wenzelm@49011
   257
val get_mode = #mode o top;
wenzelm@49011
   258
fun put_mode mode = map_top (fn (ctxt, facts, _, goal) => (ctxt, facts, mode, goal));
wenzelm@5820
   259
wenzelm@17359
   260
val mode_name = (fn Forward => "state" | Chain => "chain" | Backward => "prove");
wenzelm@5820
   261
wenzelm@5820
   262
fun assert_mode pred state =
wenzelm@5820
   263
  let val mode = get_mode state in
wenzelm@5820
   264
    if pred mode then state
wenzelm@18678
   265
    else error ("Illegal application of proof command in " ^ quote (mode_name mode) ^ " mode")
wenzelm@5820
   266
  end;
wenzelm@5820
   267
wenzelm@19308
   268
val assert_forward = assert_mode (fn mode => mode = Forward);
wenzelm@19308
   269
val assert_chain = assert_mode (fn mode => mode = Chain);
wenzelm@19308
   270
val assert_forward_or_chain = assert_mode (fn mode => mode = Forward orelse mode = Chain);
wenzelm@19308
   271
val assert_backward = assert_mode (fn mode => mode = Backward);
wenzelm@19308
   272
val assert_no_chain = assert_mode (fn mode => mode <> Chain);
wenzelm@5820
   273
wenzelm@17359
   274
val enter_forward = put_mode Forward;
wenzelm@17359
   275
val enter_chain = put_mode Chain;
wenzelm@17359
   276
val enter_backward = put_mode Backward;
wenzelm@5820
   277
wenzelm@17359
   278
wenzelm@17359
   279
(* current goal *)
wenzelm@17359
   280
wenzelm@17359
   281
fun current_goal state =
wenzelm@49011
   282
  (case top state of
wenzelm@17359
   283
    {context, goal = SOME (Goal goal), ...} => (context, goal)
wenzelm@47065
   284
  | _ => error "No current goal");
wenzelm@5820
   285
wenzelm@17359
   286
fun assert_current_goal g state =
wenzelm@17359
   287
  let val g' = can current_goal state in
wenzelm@47065
   288
    if g andalso not g' then error "No goal in this block"
wenzelm@47065
   289
    else if not g andalso g' then error "Goal present in this block"
wenzelm@17359
   290
    else state
wenzelm@17359
   291
  end;
wenzelm@6776
   292
wenzelm@49011
   293
fun put_goal goal = map_top (fn (ctxt, using, mode, _) => (ctxt, using, mode, goal));
wenzelm@17359
   294
wenzelm@47068
   295
val set_goal = put_goal o SOME;
wenzelm@47068
   296
val reset_goal = put_goal NONE;
wenzelm@47068
   297
wenzelm@17859
   298
val before_qed = #before_qed o #2 o current_goal;
wenzelm@17859
   299
wenzelm@17359
   300
wenzelm@17359
   301
(* nested goal *)
wenzelm@5820
   302
wenzelm@47431
   303
fun map_goal f g h (State (Node {context, facts, mode, goal = SOME goal}, node :: nodes)) =
wenzelm@17359
   304
      let
wenzelm@24543
   305
        val Goal {statement, messages, using, goal, before_qed, after_qed} = goal;
wenzelm@24543
   306
        val goal' = make_goal (g (statement, messages, using, goal, before_qed, after_qed));
wenzelm@47431
   307
        val node' = map_node_context h node;
wenzelm@47431
   308
      in State (make_node (f context, facts, mode, SOME goal'), node' :: nodes) end
wenzelm@47431
   309
  | map_goal f g h (State (nd, node :: nodes)) =
wenzelm@47431
   310
      let
wenzelm@47431
   311
        val nd' = map_node_context f nd;
wenzelm@47431
   312
        val State (node', nodes') = map_goal f g h (State (node, nodes));
wenzelm@47431
   313
      in State (nd', node' :: nodes') end
wenzelm@47431
   314
  | map_goal _ _ _ state = state;
wenzelm@5820
   315
wenzelm@47068
   316
fun provide_goal goal = map_goal I (fn (statement, _, using, _, before_qed, after_qed) =>
wenzelm@47431
   317
  (statement, [], using, goal, before_qed, after_qed)) I;
wenzelm@19188
   318
wenzelm@24543
   319
fun goal_message msg = map_goal I (fn (statement, messages, using, goal, before_qed, after_qed) =>
wenzelm@47431
   320
  (statement, msg :: messages, using, goal, before_qed, after_qed)) I;
wenzelm@24543
   321
wenzelm@24556
   322
fun using_facts using = map_goal I (fn (statement, _, _, goal, before_qed, after_qed) =>
wenzelm@47431
   323
  (statement, [], using, goal, before_qed, after_qed)) I;
wenzelm@17359
   324
wenzelm@17359
   325
local
wenzelm@17359
   326
  fun find i state =
wenzelm@17359
   327
    (case try current_goal state of
wenzelm@17359
   328
      SOME (ctxt, goal) => (ctxt, (i, goal))
wenzelm@18678
   329
    | NONE => find (i + 1) (close_block state handle ERROR _ => error "No goal present"));
wenzelm@17359
   330
in val find_goal = find 0 end;
wenzelm@17359
   331
wenzelm@17359
   332
fun get_goal state =
wenzelm@17359
   333
  let val (ctxt, (_, {using, goal, ...})) = find_goal state
wenzelm@17359
   334
  in (ctxt, (using, goal)) end;
wenzelm@5820
   335
wenzelm@5820
   336
wenzelm@5820
   337
wenzelm@12423
   338
(** pretty_state **)
wenzelm@5820
   339
wenzelm@52641
   340
fun pretty_goal_messages state =
wenzelm@52641
   341
  (case try find_goal state of
wenzelm@52641
   342
    SOME (_, (_, {messages, ...})) => map (fn msg => msg ()) (rev messages)
wenzelm@52641
   343
  | NONE => []);
wenzelm@52641
   344
skalberg@15531
   345
fun pretty_facts _ _ NONE = []
wenzelm@51584
   346
  | pretty_facts ctxt s (SOME ths) = [Proof_Display.pretty_goal_facts ctxt s ths, Pretty.str ""];
wenzelm@6756
   347
wenzelm@17359
   348
fun pretty_state nr state =
wenzelm@5820
   349
  let
wenzelm@49011
   350
    val {context = ctxt, facts, mode, goal = _} = top state;
wenzelm@42717
   351
    val verbose = Config.get ctxt Proof_Context.verbose;
wenzelm@5820
   352
wenzelm@49860
   353
    fun prt_goal (SOME (_, (_,
wenzelm@29416
   354
      {statement = ((_, pos), _, _), messages, using, goal, before_qed = _, after_qed = _}))) =
wenzelm@51584
   355
          pretty_facts ctxt "using"
wenzelm@17359
   356
            (if mode <> Backward orelse null using then NONE else SOME using) @
wenzelm@49860
   357
          [Proof_Display.pretty_goal_header goal] @ Goal_Display.pretty_goals ctxt goal @
wenzelm@25958
   358
          (map (fn msg => Position.setmp_thread_data pos msg ()) (rev messages))
wenzelm@17359
   359
      | prt_goal NONE = [];
wenzelm@6848
   360
wenzelm@17359
   361
    val prt_ctxt =
wenzelm@42717
   362
      if verbose orelse mode = Forward then Proof_Context.pretty_context ctxt
wenzelm@42360
   363
      else if mode = Backward then Proof_Context.pretty_ctxt ctxt
wenzelm@7575
   364
      else [];
wenzelm@17359
   365
  in
wenzelm@17359
   366
    [Pretty.str ("proof (" ^ mode_name mode ^ "): step " ^ string_of_int nr ^
wenzelm@42717
   367
      (if verbose then ", depth " ^ string_of_int (level state div 2 - 1) else "")),
wenzelm@17359
   368
      Pretty.str ""] @
wenzelm@17359
   369
    (if null prt_ctxt then [] else prt_ctxt @ [Pretty.str ""]) @
wenzelm@42717
   370
    (if verbose orelse mode = Forward then
wenzelm@51584
   371
       pretty_facts ctxt "" facts @ prt_goal (try find_goal state)
wenzelm@51584
   372
     else if mode = Chain then pretty_facts ctxt "picking" facts
wenzelm@17359
   373
     else prt_goal (try find_goal state))
wenzelm@17359
   374
  end;
wenzelm@5820
   375
wenzelm@5820
   376
wenzelm@5820
   377
wenzelm@5820
   378
(** proof steps **)
wenzelm@5820
   379
wenzelm@17359
   380
(* refine via method *)
wenzelm@5820
   381
wenzelm@8234
   382
local
wenzelm@8234
   383
wenzelm@16146
   384
fun goalN i = "goal" ^ string_of_int i;
wenzelm@16146
   385
fun goals st = map goalN (1 upto Thm.nprems_of st);
wenzelm@16146
   386
wenzelm@16146
   387
fun no_goal_cases st = map (rpair NONE) (goals st);
wenzelm@16146
   388
wenzelm@16146
   389
fun goal_cases st =
wenzelm@47815
   390
  Rule_Cases.make_common
wenzelm@47815
   391
    (Thm.theory_of_thm st, Thm.prop_of st) (map (rpair [] o rpair []) (goals st));
wenzelm@16146
   392
wenzelm@32193
   393
fun apply_method current_context meth state =
wenzelm@6848
   394
  let
wenzelm@24556
   395
    val (goal_ctxt, (_, {statement, messages = _, using, goal, before_qed, after_qed})) =
wenzelm@24543
   396
      find_goal state;
wenzelm@25958
   397
    val ctxt = if current_context then context_of state else goal_ctxt;
wenzelm@16146
   398
  in
wenzelm@32193
   399
    Method.apply meth ctxt using goal |> Seq.map (fn (meth_cases, goal') =>
wenzelm@6848
   400
      state
wenzelm@16146
   401
      |> map_goal
wenzelm@42360
   402
          (Proof_Context.add_cases false (no_goal_cases goal @ goal_cases goal') #>
wenzelm@42360
   403
           Proof_Context.add_cases true meth_cases)
wenzelm@47431
   404
          (K (statement, [], using, goal', before_qed, after_qed)) I)
wenzelm@16146
   405
  end;
wenzelm@5820
   406
wenzelm@19188
   407
fun select_goals n meth state =
wenzelm@51383
   408
  ALLGOALS Goal.conjunction_tac (#2 (#2 (get_goal state)))
wenzelm@19224
   409
  |> Seq.maps (fn goal =>
wenzelm@19188
   410
    state
wenzelm@52458
   411
    |> Seq.lift provide_goal ((PRIMITIVE (Goal.restrict 1 n) THEN Goal.conjunction_tac 1) goal)
wenzelm@19188
   412
    |> Seq.maps meth
wenzelm@19188
   413
    |> Seq.maps (fn state' => state'
wenzelm@52458
   414
      |> Seq.lift provide_goal (PRIMITIVE (Goal.unrestrict 1) (#2 (#2 (get_goal state')))))
wenzelm@32193
   415
    |> Seq.maps (apply_method true (K Method.succeed)));
wenzelm@19188
   416
wenzelm@17112
   417
fun apply_text cc text state =
wenzelm@17112
   418
  let
wenzelm@17112
   419
    val thy = theory_of state;
wenzelm@17112
   420
wenzelm@32193
   421
    fun eval (Method.Basic m) = apply_method cc m
wenzelm@32193
   422
      | eval (Method.Source src) = apply_method cc (Method.method thy src)
wenzelm@32193
   423
      | eval (Method.Source_i src) = apply_method cc (Method.method_i thy src)
wenzelm@17112
   424
      | eval (Method.Then txts) = Seq.EVERY (map eval txts)
wenzelm@17112
   425
      | eval (Method.Orelse txts) = Seq.FIRST (map eval txts)
wenzelm@17112
   426
      | eval (Method.Try txt) = Seq.TRY (eval txt)
wenzelm@19188
   427
      | eval (Method.Repeat1 txt) = Seq.REPEAT1 (eval txt)
wenzelm@51383
   428
      | eval (Method.Select_Goals (n, txt)) = select_goals n (eval txt);
wenzelm@17112
   429
  in eval text state end;
wenzelm@17112
   430
wenzelm@8234
   431
in
wenzelm@8234
   432
wenzelm@17112
   433
val refine = apply_text true;
wenzelm@17112
   434
val refine_end = apply_text false;
wenzelm@32856
   435
fun refine_insert ths = Seq.hd o refine (Method.Basic (K (Method.insert ths)));
wenzelm@18908
   436
wenzelm@8234
   437
end;
wenzelm@8234
   438
wenzelm@5820
   439
wenzelm@17359
   440
(* refine via sub-proof *)
wenzelm@17359
   441
wenzelm@46466
   442
local
wenzelm@46466
   443
wenzelm@30557
   444
fun finish_tac 0 = K all_tac
wenzelm@30557
   445
  | finish_tac n =
wenzelm@30557
   446
      Goal.norm_hhf_tac THEN'
wenzelm@30557
   447
      SUBGOAL (fn (goal, i) =>
wenzelm@30557
   448
        if can Logic.unprotect (Logic.strip_assums_concl goal) then
wenzelm@52732
   449
          etac Drule.protectI i THEN finish_tac (n - 1) i
wenzelm@30557
   450
        else finish_tac (n - 1) (i + 1));
wenzelm@30557
   451
wenzelm@20208
   452
fun goal_tac rule =
wenzelm@30557
   453
  Goal.norm_hhf_tac THEN'
wenzelm@52732
   454
  rtac rule THEN'
wenzelm@30557
   455
  finish_tac (Thm.nprems_of rule);
wenzelm@11816
   456
wenzelm@46466
   457
fun FINDGOAL tac st =
wenzelm@46466
   458
  let fun find i n = if i > n then Seq.fail else Seq.APPEND (tac i, find (i + 1) n)
wenzelm@46466
   459
  in find 1 (Thm.nprems_of st) st end;
wenzelm@46466
   460
wenzelm@46466
   461
in
wenzelm@46466
   462
wenzelm@19915
   463
fun refine_goals print_rule inner raw_rules state =
wenzelm@19915
   464
  let
wenzelm@19915
   465
    val (outer, (_, goal)) = get_goal state;
wenzelm@20208
   466
    fun refine rule st = (print_rule outer rule; FINDGOAL (goal_tac rule) st);
wenzelm@19915
   467
  in
wenzelm@19915
   468
    raw_rules
wenzelm@42360
   469
    |> Proof_Context.goal_export inner outer
wenzelm@47068
   470
    |> (fn rules => Seq.lift provide_goal (EVERY (map refine rules) goal) state)
wenzelm@19915
   471
  end;
wenzelm@17359
   472
wenzelm@46466
   473
end;
wenzelm@46466
   474
wenzelm@6932
   475
wenzelm@49846
   476
(* conclude goal *)
wenzelm@49846
   477
wenzelm@28627
   478
fun conclude_goal ctxt goal propss =
wenzelm@5820
   479
  let
wenzelm@42360
   480
    val thy = Proof_Context.theory_of ctxt;
wenzelm@24920
   481
    val string_of_term = Syntax.string_of_term ctxt;
wenzelm@32091
   482
    val string_of_thm = Display.string_of_thm ctxt;
wenzelm@5820
   483
wenzelm@49860
   484
    val _ = Thm.no_prems goal orelse error (Proof_Display.string_of_goal ctxt goal);
wenzelm@20224
   485
wenzelm@20224
   486
    val extra_hyps = Assumption.extra_hyps ctxt goal;
wenzelm@20224
   487
    val _ = null extra_hyps orelse
wenzelm@20224
   488
      error ("Additional hypotheses:\n" ^ cat_lines (map string_of_term extra_hyps));
wenzelm@5820
   489
wenzelm@23418
   490
    fun lost_structure () = error ("Lost goal structure:\n" ^ string_of_thm goal);
wenzelm@23418
   491
berghofe@23782
   492
    val th = Goal.conclude
wenzelm@23806
   493
      (if length (flat propss) > 1 then Thm.norm_proof goal else goal)
berghofe@23782
   494
      handle THM _ => lost_structure ();
wenzelm@23418
   495
    val goal_propss = filter_out null propss;
wenzelm@23418
   496
    val results =
wenzelm@23418
   497
      Conjunction.elim_balanced (length goal_propss) th
wenzelm@23418
   498
      |> map2 Conjunction.elim_balanced (map length goal_propss)
wenzelm@23418
   499
      handle THM _ => lost_structure ();
wenzelm@23418
   500
    val _ = Unify.matches_list thy (flat goal_propss) (map Thm.prop_of (flat results)) orelse
wenzelm@19774
   501
      error ("Proved a different theorem:\n" ^ string_of_thm th);
wenzelm@28627
   502
    val _ = Thm.check_shyps (Variable.sorts_of ctxt) th;
wenzelm@23418
   503
wenzelm@23418
   504
    fun recover_result ([] :: pss) thss = [] :: recover_result pss thss
wenzelm@23418
   505
      | recover_result (_ :: pss) (ths :: thss) = ths :: recover_result pss thss
wenzelm@23418
   506
      | recover_result [] [] = []
wenzelm@23418
   507
      | recover_result _ _ = lost_structure ();
wenzelm@23418
   508
  in recover_result propss results end;
wenzelm@5820
   509
wenzelm@49859
   510
val finished_goal_error = "Failed to finish proof";
wenzelm@49859
   511
wenzelm@49889
   512
fun finished_goal pos state =
wenzelm@49859
   513
  let val (ctxt, (_, goal)) = get_goal state in
wenzelm@49859
   514
    if Thm.no_prems goal then Seq.Result state
wenzelm@49889
   515
    else
wenzelm@49889
   516
      Seq.Error (fn () =>
wenzelm@49889
   517
        finished_goal_error ^ Position.here pos ^ ":\n" ^
wenzelm@49889
   518
          Proof_Display.string_of_goal ctxt goal)
wenzelm@49859
   519
  end;
wenzelm@49846
   520
wenzelm@5820
   521
wenzelm@33288
   522
(* goal views -- corresponding to methods *)
wenzelm@33288
   523
wenzelm@33288
   524
fun raw_goal state =
wenzelm@33288
   525
  let val (ctxt, (facts, goal)) = get_goal state
wenzelm@33288
   526
  in {context = ctxt, facts = facts, goal = goal} end;
wenzelm@33288
   527
wenzelm@33288
   528
val goal = raw_goal o refine_insert [];
wenzelm@33288
   529
wenzelm@33288
   530
fun simple_goal state =
wenzelm@33288
   531
  let
wenzelm@33288
   532
    val (_, (facts, _)) = get_goal state;
wenzelm@33288
   533
    val (ctxt, (_, goal)) = get_goal (refine_insert facts state);
wenzelm@33288
   534
  in {context = ctxt, goal = goal} end;
wenzelm@33288
   535
wenzelm@38721
   536
fun status_markup state =
wenzelm@38721
   537
  (case try goal state of
wenzelm@50201
   538
    SOME {goal, ...} => Markup.proof_state (Thm.nprems_of goal)
wenzelm@38721
   539
  | NONE => Markup.empty);
wenzelm@38721
   540
wenzelm@49866
   541
fun method_error kind pos state =
wenzelm@49866
   542
  Seq.single (Proof_Display.method_error kind pos (raw_goal state));
wenzelm@49861
   543
wenzelm@33288
   544
wenzelm@5820
   545
wenzelm@5820
   546
(*** structured proof commands ***)
wenzelm@5820
   547
wenzelm@17112
   548
(** context elements **)
wenzelm@5820
   549
wenzelm@36324
   550
(* let bindings *)
wenzelm@5820
   551
wenzelm@16813
   552
local
wenzelm@16813
   553
wenzelm@17359
   554
fun gen_bind bind args state =
wenzelm@5820
   555
  state
wenzelm@5820
   556
  |> assert_forward
wenzelm@36324
   557
  |> map_context (bind true args #> snd)
wenzelm@47068
   558
  |> reset_facts;
wenzelm@5820
   559
wenzelm@16813
   560
in
wenzelm@16813
   561
wenzelm@42360
   562
val let_bind = gen_bind Proof_Context.match_bind_i;
wenzelm@42360
   563
val let_bind_cmd = gen_bind Proof_Context.match_bind;
wenzelm@5820
   564
wenzelm@16813
   565
end;
wenzelm@16813
   566
wenzelm@5820
   567
wenzelm@36505
   568
(* concrete syntax *)
wenzelm@36505
   569
wenzelm@36505
   570
local
wenzelm@36505
   571
wenzelm@36507
   572
fun gen_write prep_arg mode args =
wenzelm@36507
   573
  assert_forward
wenzelm@42360
   574
  #> map_context (fn ctxt => ctxt |> Proof_Context.notation true mode (map (prep_arg ctxt) args))
wenzelm@47068
   575
  #> reset_facts;
wenzelm@36505
   576
wenzelm@36505
   577
in
wenzelm@36505
   578
wenzelm@36505
   579
val write = gen_write (K I);
wenzelm@36505
   580
wenzelm@36505
   581
val write_cmd =
wenzelm@36505
   582
  gen_write (fn ctxt => fn (c, mx) =>
wenzelm@42360
   583
    (Proof_Context.read_const ctxt false (Mixfix.mixfixT mx) c, mx));
wenzelm@36505
   584
wenzelm@36505
   585
end;
wenzelm@36505
   586
wenzelm@36505
   587
wenzelm@17359
   588
(* fix *)
wenzelm@9196
   589
wenzelm@12714
   590
local
wenzelm@12714
   591
wenzelm@30763
   592
fun gen_fix prep_vars args =
wenzelm@17359
   593
  assert_forward
wenzelm@45597
   594
  #> map_context (fn ctxt => snd (Proof_Context.add_fixes (fst (prep_vars args ctxt)) ctxt))
wenzelm@47068
   595
  #> reset_facts;
wenzelm@5820
   596
wenzelm@16813
   597
in
wenzelm@16813
   598
wenzelm@45597
   599
val fix = gen_fix Proof_Context.cert_vars;
wenzelm@45597
   600
val fix_cmd = gen_fix Proof_Context.read_vars;
wenzelm@5820
   601
wenzelm@16813
   602
end;
wenzelm@16813
   603
wenzelm@5820
   604
wenzelm@17359
   605
(* assume etc. *)
wenzelm@5820
   606
wenzelm@16813
   607
local
wenzelm@16813
   608
wenzelm@17112
   609
fun gen_assume asm prep_att exp args state =
wenzelm@5820
   610
  state
wenzelm@5820
   611
  |> assert_forward
wenzelm@47815
   612
  |> map_context_result (asm exp (Attrib.map_specs (map (prep_att (context_of state))) args))
wenzelm@17359
   613
  |> these_factss [] |> #2;
wenzelm@6932
   614
wenzelm@16813
   615
in
wenzelm@16813
   616
wenzelm@42360
   617
val assm = gen_assume Proof_Context.add_assms_i (K I);
wenzelm@47815
   618
val assm_cmd = gen_assume Proof_Context.add_assms Attrib.attribute_cmd;
wenzelm@36323
   619
val assume = assm Assumption.assume_export;
wenzelm@36323
   620
val assume_cmd = assm_cmd Assumption.assume_export;
wenzelm@36323
   621
val presume = assm Assumption.presume_export;
wenzelm@36323
   622
val presume_cmd = assm_cmd Assumption.presume_export;
wenzelm@5820
   623
wenzelm@16813
   624
end;
wenzelm@16813
   625
wenzelm@7271
   626
wenzelm@17359
   627
(* def *)
wenzelm@11891
   628
wenzelm@16813
   629
local
wenzelm@16813
   630
wenzelm@20913
   631
fun gen_def prep_att prep_vars prep_binds args state =
wenzelm@11891
   632
  let
wenzelm@11891
   633
    val _ = assert_forward state;
wenzelm@20913
   634
    val (raw_name_atts, (raw_vars, raw_rhss)) = args |> split_list ||> split_list;
wenzelm@47815
   635
    val name_atts = map (apsnd (map (prep_att (context_of state)))) raw_name_atts;
wenzelm@11891
   636
  in
wenzelm@20913
   637
    state
wenzelm@20913
   638
    |> map_context_result (prep_vars (map (fn (x, mx) => (x, NONE, mx)) raw_vars))
wenzelm@20913
   639
    |>> map (fn (x, _, mx) => (x, mx))
wenzelm@20913
   640
    |-> (fn vars =>
wenzelm@20913
   641
      map_context_result (prep_binds false (map swap raw_rhss))
wenzelm@49748
   642
      #-> (fn rhss =>
wenzelm@49748
   643
        let
wenzelm@49748
   644
          val defs = (vars ~~ (name_atts ~~ rhss)) |> map (fn ((x, mx), ((a, atts), rhs)) =>
wenzelm@49748
   645
            ((x, mx), ((Thm.def_binding_optional x a, atts), rhs)));
wenzelm@49748
   646
        in map_context_result (Local_Defs.add_defs defs) end))
wenzelm@47068
   647
    |-> (set_facts o map (#2 o #2))
wenzelm@11891
   648
  end;
wenzelm@11891
   649
wenzelm@16813
   650
in
wenzelm@16813
   651
wenzelm@42360
   652
val def = gen_def (K I) Proof_Context.cert_vars Proof_Context.match_bind_i;
wenzelm@47815
   653
val def_cmd = gen_def Attrib.attribute_cmd Proof_Context.read_vars Proof_Context.match_bind;
wenzelm@11891
   654
wenzelm@16813
   655
end;
wenzelm@16813
   656
wenzelm@11891
   657
wenzelm@8374
   658
wenzelm@17112
   659
(** facts **)
wenzelm@5820
   660
wenzelm@17359
   661
(* chain *)
wenzelm@5820
   662
wenzelm@24011
   663
fun clean_facts ctxt =
wenzelm@47068
   664
  set_facts (filter_out Thm.is_dummy (the_facts ctxt)) ctxt;
wenzelm@24011
   665
wenzelm@17359
   666
val chain =
wenzelm@17359
   667
  assert_forward
wenzelm@24011
   668
  #> clean_facts
wenzelm@17359
   669
  #> enter_chain;
wenzelm@5820
   670
wenzelm@17359
   671
fun chain_facts facts =
wenzelm@47068
   672
  set_facts facts
wenzelm@17359
   673
  #> chain;
wenzelm@5820
   674
wenzelm@5820
   675
wenzelm@17359
   676
(* note etc. *)
wenzelm@17112
   677
haftmann@28965
   678
fun no_binding args = map (pair (Binding.empty, [])) args;
wenzelm@17112
   679
wenzelm@17112
   680
local
wenzelm@17112
   681
wenzelm@30760
   682
fun gen_thmss more_facts opt_chain opt_result prep_atts prep_fact args state =
wenzelm@17112
   683
  state
wenzelm@17112
   684
  |> assert_forward
wenzelm@47815
   685
  |> map_context_result (fn ctxt => ctxt |> Proof_Context.note_thmss ""
wenzelm@47815
   686
    (Attrib.map_facts_refs (map (prep_atts ctxt)) (prep_fact ctxt) args))
wenzelm@17112
   687
  |> these_factss (more_facts state)
wenzelm@17359
   688
  ||> opt_chain
wenzelm@17359
   689
  |> opt_result;
wenzelm@17112
   690
wenzelm@17112
   691
in
wenzelm@17112
   692
wenzelm@36323
   693
val note_thmss = gen_thmss (K []) I #2 (K I) (K I);
wenzelm@47815
   694
val note_thmss_cmd = gen_thmss (K []) I #2 Attrib.attribute_cmd Proof_Context.get_fact;
wenzelm@17112
   695
wenzelm@36323
   696
val from_thmss = gen_thmss (K []) chain #2 (K I) (K I) o no_binding;
wenzelm@47815
   697
val from_thmss_cmd =
wenzelm@47815
   698
  gen_thmss (K []) chain #2 Attrib.attribute_cmd Proof_Context.get_fact o no_binding;
wenzelm@17359
   699
wenzelm@36323
   700
val with_thmss = gen_thmss the_facts chain #2 (K I) (K I) o no_binding;
wenzelm@47815
   701
val with_thmss_cmd =
wenzelm@47815
   702
  gen_thmss the_facts chain #2 Attrib.attribute_cmd Proof_Context.get_fact o no_binding;
wenzelm@30760
   703
wenzelm@30760
   704
val local_results = gen_thmss (K []) I I (K I) (K I) o map (apsnd Thm.simple_fact);
wenzelm@17359
   705
wenzelm@17112
   706
end;
wenzelm@17112
   707
wenzelm@17112
   708
wenzelm@18548
   709
(* using/unfolding *)
wenzelm@17112
   710
wenzelm@17112
   711
local
wenzelm@17112
   712
wenzelm@45390
   713
fun gen_using f g prep_att prep_fact args state =
wenzelm@17112
   714
  state
wenzelm@17112
   715
  |> assert_backward
wenzelm@21442
   716
  |> map_context_result
wenzelm@47815
   717
    (fn ctxt => ctxt |> Proof_Context.note_thmss ""
wenzelm@47815
   718
      (Attrib.map_facts_refs (map (prep_att ctxt)) (prep_fact ctxt) (no_binding args)))
wenzelm@18843
   719
  |> (fn (named_facts, state') =>
wenzelm@24556
   720
    state' |> map_goal I (fn (statement, _, using, goal, before_qed, after_qed) =>
wenzelm@18843
   721
      let
wenzelm@18843
   722
        val ctxt = context_of state';
wenzelm@19482
   723
        val ths = maps snd named_facts;
wenzelm@47431
   724
      in (statement, [], f ctxt ths using, g ctxt ths goal, before_qed, after_qed) end) I);
wenzelm@18548
   725
wenzelm@24050
   726
fun append_using _ ths using = using @ filter_out Thm.is_dummy ths;
wenzelm@35624
   727
fun unfold_using ctxt ths = map (Local_Defs.unfold ctxt ths);
wenzelm@35624
   728
val unfold_goals = Local_Defs.unfold_goals;
wenzelm@17112
   729
wenzelm@17112
   730
in
wenzelm@17112
   731
wenzelm@36323
   732
val using = gen_using append_using (K (K I)) (K I) (K I);
wenzelm@47815
   733
val using_cmd = gen_using append_using (K (K I)) Attrib.attribute_cmd Proof_Context.get_fact;
wenzelm@36323
   734
val unfolding = gen_using unfold_using unfold_goals (K I) (K I);
wenzelm@47815
   735
val unfolding_cmd = gen_using unfold_using unfold_goals Attrib.attribute_cmd Proof_Context.get_fact;
wenzelm@17112
   736
wenzelm@17112
   737
end;
wenzelm@17112
   738
wenzelm@17112
   739
wenzelm@17112
   740
(* case *)
wenzelm@17112
   741
wenzelm@17112
   742
local
wenzelm@17112
   743
wenzelm@30419
   744
fun qualified_binding a =
wenzelm@30419
   745
  Binding.qualify true (Long_Name.qualifier a) (Binding.name (Long_Name.base_name a));
wenzelm@30419
   746
wenzelm@17112
   747
fun gen_invoke_case prep_att (name, xs, raw_atts) state =
wenzelm@17112
   748
  let
wenzelm@47815
   749
    val atts = map (prep_att (context_of state)) raw_atts;
wenzelm@19078
   750
    val (asms, state') = state |> map_context_result (fn ctxt =>
wenzelm@42360
   751
      ctxt |> Proof_Context.apply_case (Proof_Context.get_case ctxt name xs));
wenzelm@30419
   752
    val assumptions = asms |> map (fn (a, ts) => ((qualified_binding a, atts), map (rpair []) ts));
wenzelm@17112
   753
  in
wenzelm@17112
   754
    state'
wenzelm@36323
   755
    |> assume assumptions
wenzelm@33386
   756
    |> bind_terms Auto_Bind.no_facts
wenzelm@36323
   757
    |> `the_facts |-> (fn thms => note_thmss [((Binding.name name, []), [(thms, [])])])
wenzelm@17112
   758
  end;
wenzelm@17112
   759
wenzelm@17112
   760
in
wenzelm@17112
   761
wenzelm@36323
   762
val invoke_case = gen_invoke_case (K I);
wenzelm@47815
   763
val invoke_case_cmd = gen_invoke_case Attrib.attribute_cmd;
wenzelm@17112
   764
wenzelm@17112
   765
end;
wenzelm@17112
   766
wenzelm@17112
   767
wenzelm@17112
   768
wenzelm@17359
   769
(** proof structure **)
wenzelm@17359
   770
wenzelm@17359
   771
(* blocks *)
wenzelm@17359
   772
wenzelm@17359
   773
val begin_block =
wenzelm@17359
   774
  assert_forward
wenzelm@17359
   775
  #> open_block
wenzelm@47068
   776
  #> reset_goal
wenzelm@17359
   777
  #> open_block;
wenzelm@17359
   778
wenzelm@17359
   779
val next_block =
wenzelm@17359
   780
  assert_forward
wenzelm@17359
   781
  #> close_block
wenzelm@17359
   782
  #> open_block
wenzelm@47068
   783
  #> reset_goal
wenzelm@47068
   784
  #> reset_facts;
wenzelm@17359
   785
wenzelm@17359
   786
fun end_block state =
wenzelm@17359
   787
  state
wenzelm@17359
   788
  |> assert_forward
wenzelm@40960
   789
  |> assert_bottom false
wenzelm@17359
   790
  |> close_block
wenzelm@17359
   791
  |> assert_current_goal false
wenzelm@17359
   792
  |> close_block
wenzelm@17359
   793
  |> export_facts state;
wenzelm@17359
   794
wenzelm@17359
   795
wenzelm@40960
   796
(* global notepad *)
wenzelm@40960
   797
wenzelm@40960
   798
val begin_notepad =
wenzelm@40960
   799
  init
wenzelm@40960
   800
  #> open_block
wenzelm@40960
   801
  #> map_context (Variable.set_body true)
wenzelm@40960
   802
  #> open_block;
wenzelm@40960
   803
wenzelm@40960
   804
val end_notepad =
wenzelm@40960
   805
  assert_forward
wenzelm@40960
   806
  #> assert_bottom true
wenzelm@40960
   807
  #> close_block
wenzelm@40960
   808
  #> assert_current_goal false
wenzelm@40960
   809
  #> close_block
wenzelm@40960
   810
  #> context_of;
wenzelm@40960
   811
wenzelm@40960
   812
wenzelm@17359
   813
(* sub-proofs *)
wenzelm@17359
   814
wenzelm@17359
   815
fun proof opt_text =
wenzelm@17359
   816
  assert_backward
wenzelm@17859
   817
  #> refine (the_default Method.default_text opt_text)
wenzelm@17359
   818
  #> Seq.map (using_facts [] #> enter_forward);
wenzelm@17359
   819
wenzelm@49866
   820
fun proof_results arg =
wenzelm@49866
   821
  Seq.APPEND (proof (Method.text arg) #> Seq.make_results,
wenzelm@49866
   822
    method_error "initial" (Method.position arg));
wenzelm@49863
   823
wenzelm@49889
   824
fun end_proof bot (prev_pos, (opt_text, immed)) =
wenzelm@49889
   825
  let
wenzelm@49889
   826
    val (finish_text, terminal_pos, finished_pos) =
wenzelm@49889
   827
      (case opt_text of
wenzelm@49889
   828
        NONE => (Method.finish_text (NONE, immed), Position.none, prev_pos)
wenzelm@50912
   829
      | SOME (text, (pos, end_pos)) =>
wenzelm@50912
   830
          (Method.finish_text (SOME text, immed), Position.set_range (pos, end_pos), end_pos));
wenzelm@49889
   831
  in
wenzelm@49889
   832
    Seq.APPEND (fn state =>
wenzelm@49889
   833
      state
wenzelm@49889
   834
      |> assert_forward
wenzelm@49889
   835
      |> assert_bottom bot
wenzelm@49889
   836
      |> close_block
wenzelm@49889
   837
      |> assert_current_goal true
wenzelm@49889
   838
      |> using_facts []
wenzelm@49889
   839
      |> `before_qed |-> (refine o the_default Method.succeed_text)
wenzelm@49889
   840
      |> Seq.maps (refine finish_text)
wenzelm@49889
   841
      |> Seq.make_results, method_error "terminal" terminal_pos)
wenzelm@49889
   842
    #> Seq.maps_results (Seq.single o finished_goal finished_pos)
wenzelm@49889
   843
  end;
wenzelm@17359
   844
wenzelm@29383
   845
fun check_result msg sq =
wenzelm@29383
   846
  (case Seq.pull sq of
wenzelm@29383
   847
    NONE => error msg
wenzelm@29383
   848
  | SOME (s, _) => s);
wenzelm@29383
   849
wenzelm@17359
   850
wenzelm@17359
   851
(* unstructured refinement *)
wenzelm@17359
   852
wenzelm@49865
   853
fun defer i =
wenzelm@49865
   854
  assert_no_chain #>
wenzelm@49865
   855
  refine (Method.Basic (fn _ => METHOD (fn _ => ASSERT_SUBGOAL defer_tac i))) #> Seq.hd;
wenzelm@49865
   856
wenzelm@49865
   857
fun prefer i =
wenzelm@49865
   858
  assert_no_chain #>
wenzelm@49865
   859
  refine (Method.Basic (fn _ => METHOD (fn _ => ASSERT_SUBGOAL prefer_tac i))) #> Seq.hd;
wenzelm@17359
   860
wenzelm@17359
   861
fun apply text = assert_backward #> refine text #> Seq.map (using_facts []);
wenzelm@49866
   862
wenzelm@17359
   863
fun apply_end text = assert_forward #> refine_end text;
wenzelm@17359
   864
wenzelm@49889
   865
fun apply_results (text, range) =
wenzelm@49889
   866
  Seq.APPEND (apply text #> Seq.make_results, method_error "" (Position.set_range range));
wenzelm@49866
   867
wenzelm@49889
   868
fun apply_end_results (text, range) =
wenzelm@49889
   869
  Seq.APPEND (apply_end text #> Seq.make_results, method_error "" (Position.set_range range));
wenzelm@49863
   870
wenzelm@17359
   871
wenzelm@17359
   872
wenzelm@17112
   873
(** goals **)
wenzelm@17112
   874
wenzelm@17359
   875
(* generic goals *)
wenzelm@17359
   876
wenzelm@19774
   877
local
wenzelm@19774
   878
wenzelm@36322
   879
val is_var =
wenzelm@36322
   880
  can (dest_TVar o Logic.dest_type o Logic.dest_term) orf
wenzelm@36322
   881
  can (dest_Var o Logic.dest_term);
wenzelm@36322
   882
wenzelm@36322
   883
fun implicit_vars props =
wenzelm@19846
   884
  let
wenzelm@36354
   885
    val (var_props, _) = take_prefix is_var props;
wenzelm@36322
   886
    val explicit_vars = fold Term.add_vars var_props [];
wenzelm@36322
   887
    val vars = filter_out (member (op =) explicit_vars) (fold Term.add_vars props []);
wenzelm@36322
   888
  in map (Logic.mk_term o Var) vars end;
wenzelm@19774
   889
wenzelm@19774
   890
fun refine_terms n =
wenzelm@30510
   891
  refine (Method.Basic (K (RAW_METHOD
wenzelm@19774
   892
    (K (HEADGOAL (PRECISE_CONJUNCTS n
wenzelm@32193
   893
      (HEADGOAL (CONJUNCTS (ALLGOALS (rtac Drule.termI))))))))))
wenzelm@19774
   894
  #> Seq.hd;
wenzelm@19774
   895
wenzelm@19774
   896
in
wenzelm@17359
   897
wenzelm@17859
   898
fun generic_goal prepp kind before_qed after_qed raw_propp state =
wenzelm@5820
   899
  let
wenzelm@17359
   900
    val thy = theory_of state;
wenzelm@23418
   901
    val cert = Thm.cterm_of thy;
wenzelm@17359
   902
    val chaining = can assert_chain state;
wenzelm@25958
   903
    val pos = Position.thread_data ();
wenzelm@17359
   904
wenzelm@17359
   905
    val ((propss, after_ctxt), goal_state) =
wenzelm@5936
   906
      state
wenzelm@5936
   907
      |> assert_forward_or_chain
wenzelm@5936
   908
      |> enter_forward
wenzelm@17359
   909
      |> open_block
wenzelm@45327
   910
      |> map_context_result (prepp raw_propp);
wenzelm@19482
   911
    val props = flat propss;
wenzelm@15703
   912
wenzelm@36322
   913
    val vars = implicit_vars props;
wenzelm@36322
   914
    val propss' = vars :: propss;
wenzelm@23418
   915
    val goal_propss = filter_out null propss';
wenzelm@29346
   916
    val goal =
wenzelm@29346
   917
      cert (Logic.mk_conjunction_balanced (map Logic.mk_conjunction_balanced goal_propss))
wenzelm@28627
   918
      |> Thm.weaken_sorts (Variable.sorts_of (context_of goal_state));
wenzelm@29346
   919
    val statement = ((kind, pos), propss', Thm.term_of goal);
wenzelm@18124
   920
    val after_qed' = after_qed |>> (fn after_local =>
wenzelm@18124
   921
      fn results => map_context after_ctxt #> after_local results);
wenzelm@5820
   922
  in
wenzelm@17359
   923
    goal_state
wenzelm@21727
   924
    |> map_context (init_context #> Variable.set_body true)
wenzelm@47068
   925
    |> set_goal (make_goal (statement, [], [], Goal.init goal, before_qed, after_qed'))
wenzelm@42360
   926
    |> map_context (Proof_Context.auto_bind_goal props)
wenzelm@21565
   927
    |> chaining ? (`the_facts #-> using_facts)
wenzelm@47068
   928
    |> reset_facts
wenzelm@17359
   929
    |> open_block
wenzelm@47068
   930
    |> reset_goal
wenzelm@5820
   931
    |> enter_backward
wenzelm@23418
   932
    |> not (null vars) ? refine_terms (length goal_propss)
wenzelm@32193
   933
    |> null props ? (refine (Method.Basic Method.assumption) #> Seq.hd)
wenzelm@5820
   934
  end;
wenzelm@5820
   935
wenzelm@29090
   936
fun generic_qed after_ctxt state =
wenzelm@12503
   937
  let
wenzelm@36354
   938
    val (goal_ctxt, {statement = (_, stmt, _), goal, after_qed, ...}) = current_goal state;
wenzelm@8617
   939
    val outer_state = state |> close_block;
wenzelm@8617
   940
    val outer_ctxt = context_of outer_state;
wenzelm@8617
   941
wenzelm@18503
   942
    val props =
wenzelm@19774
   943
      flat (tl stmt)
wenzelm@19915
   944
      |> Variable.exportT_terms goal_ctxt outer_ctxt;
wenzelm@17359
   945
    val results =
wenzelm@28627
   946
      tl (conclude_goal goal_ctxt goal stmt)
wenzelm@42360
   947
      |> burrow (Proof_Context.export goal_ctxt outer_ctxt);
wenzelm@17359
   948
  in
wenzelm@17359
   949
    outer_state
wenzelm@29090
   950
    |> map_context (after_ctxt props)
wenzelm@34239
   951
    |> pair (after_qed, results)
wenzelm@17359
   952
  end;
wenzelm@17359
   953
wenzelm@19774
   954
end;
wenzelm@19774
   955
wenzelm@9469
   956
wenzelm@17359
   957
(* local goals *)
wenzelm@17359
   958
wenzelm@17859
   959
fun local_goal print_results prep_att prepp kind before_qed after_qed stmt state =
wenzelm@17359
   960
  let
wenzelm@21362
   961
    val ((names, attss), propp) =
wenzelm@47815
   962
      Attrib.map_specs (map (prep_att (context_of state))) stmt |> split_list |>> split_list;
wenzelm@17359
   963
wenzelm@18124
   964
    fun after_qed' results =
wenzelm@18808
   965
      local_results ((names ~~ attss) ~~ results)
wenzelm@17359
   966
      #-> (fn res => tap (fn st => print_results (context_of st) ((kind, ""), res) : unit))
wenzelm@18124
   967
      #> after_qed results;
wenzelm@5820
   968
  in
wenzelm@17359
   969
    state
wenzelm@21362
   970
    |> generic_goal prepp kind before_qed (after_qed', K I) propp
wenzelm@19900
   971
    |> tap (Variable.warn_extra_tfrees (context_of state) o context_of)
wenzelm@5820
   972
  end;
wenzelm@5820
   973
wenzelm@49866
   974
fun local_qeds arg =
wenzelm@49866
   975
  end_proof false arg
wenzelm@49859
   976
  #> Seq.map_result (generic_qed Proof_Context.auto_bind_facts #->
wenzelm@49859
   977
    (fn ((after_qed, _), results) => after_qed results));
wenzelm@5820
   978
wenzelm@49889
   979
fun local_qed arg =
wenzelm@49889
   980
  local_qeds (Position.none, arg) #> Seq.the_result finished_goal_error;
wenzelm@29383
   981
wenzelm@5820
   982
wenzelm@17359
   983
(* global goals *)
wenzelm@17359
   984
wenzelm@45327
   985
fun prepp_auto_fixes prepp args =
wenzelm@45327
   986
  prepp args #>
wenzelm@45327
   987
  (fn ((propss, a), ctxt) => ((propss, a), (fold o fold) Variable.auto_fixes propss ctxt));
wenzelm@45327
   988
wenzelm@45327
   989
fun global_goal prepp before_qed after_qed propp =
wenzelm@45327
   990
  init #>
wenzelm@45327
   991
  generic_goal (prepp_auto_fixes prepp) "" before_qed (K I, after_qed) propp;
wenzelm@17359
   992
wenzelm@42360
   993
val theorem = global_goal Proof_Context.bind_propp_schematic_i;
wenzelm@42360
   994
val theorem_cmd = global_goal Proof_Context.bind_propp_schematic;
wenzelm@12065
   995
wenzelm@49866
   996
fun global_qeds arg =
wenzelm@49866
   997
  end_proof true arg
wenzelm@49859
   998
  #> Seq.map_result (generic_qed (K I) #> (fn (((_, after_qed), results), state) =>
wenzelm@49859
   999
    after_qed results (context_of state)));
wenzelm@17112
  1000
wenzelm@49889
  1001
fun global_qed arg =
wenzelm@49889
  1002
  global_qeds (Position.none, arg) #> Seq.the_result finished_goal_error;
wenzelm@12959
  1003
wenzelm@5820
  1004
wenzelm@49907
  1005
(* terminal proof steps *)
wenzelm@17112
  1006
wenzelm@49890
  1007
local
wenzelm@49890
  1008
wenzelm@49846
  1009
fun terminal_proof qeds initial terminal =
wenzelm@49889
  1010
  proof_results (SOME initial) #> Seq.maps_results (qeds (#2 (#2 initial), terminal))
wenzelm@49863
  1011
  #> Seq.the_result "";
wenzelm@49848
  1012
wenzelm@49890
  1013
in
wenzelm@49890
  1014
wenzelm@29383
  1015
fun local_terminal_proof (text, opt_text) = terminal_proof local_qeds text (opt_text, true);
wenzelm@49889
  1016
val local_default_proof = local_terminal_proof ((Method.default_text, Position.no_range), NONE);
wenzelm@49889
  1017
val local_immediate_proof = local_terminal_proof ((Method.this_text, Position.no_range), NONE);
wenzelm@49889
  1018
val local_done_proof = terminal_proof local_qeds (Method.done_text, Position.no_range) (NONE, false);
wenzelm@17112
  1019
wenzelm@29383
  1020
fun global_terminal_proof (text, opt_text) = terminal_proof global_qeds text (opt_text, true);
wenzelm@49889
  1021
val global_default_proof = global_terminal_proof ((Method.default_text, Position.no_range), NONE);
wenzelm@49889
  1022
val global_immediate_proof = global_terminal_proof ((Method.this_text, Position.no_range), NONE);
wenzelm@49889
  1023
val global_done_proof = terminal_proof global_qeds (Method.done_text, Position.no_range) (NONE, false);
wenzelm@5820
  1024
wenzelm@49890
  1025
end;
wenzelm@49890
  1026
wenzelm@6896
  1027
wenzelm@49907
  1028
(* skip proofs *)
wenzelm@49907
  1029
wenzelm@49907
  1030
fun local_skip_proof int state =
wenzelm@49907
  1031
  local_terminal_proof ((Method.sorry_text int, Position.no_range), NONE) state before
wenzelm@51551
  1032
  Skip_Proof.report (context_of state);
wenzelm@49907
  1033
wenzelm@49907
  1034
fun global_skip_proof int state =
wenzelm@49907
  1035
  global_terminal_proof ((Method.sorry_text int, Position.no_range), NONE) state before
wenzelm@51551
  1036
  Skip_Proof.report (context_of state);
wenzelm@49907
  1037
wenzelm@49907
  1038
wenzelm@17359
  1039
(* common goal statements *)
wenzelm@17359
  1040
wenzelm@17359
  1041
local
wenzelm@17359
  1042
wenzelm@17859
  1043
fun gen_have prep_att prepp before_qed after_qed stmt int =
wenzelm@50201
  1044
  local_goal (Proof_Display.print_results Markup.state int)
wenzelm@46728
  1045
    prep_att prepp "have" before_qed after_qed stmt;
wenzelm@6896
  1046
wenzelm@17859
  1047
fun gen_show prep_att prepp before_qed after_qed stmt int state =
wenzelm@17359
  1048
  let
wenzelm@32738
  1049
    val testing = Unsynchronized.ref false;
wenzelm@32738
  1050
    val rule = Unsynchronized.ref (NONE: thm option);
wenzelm@17359
  1051
    fun fail_msg ctxt =
wenzelm@50315
  1052
      "Local statement fails to refine any pending goal" ::
wenzelm@33389
  1053
      (case ! rule of NONE => [] | SOME th => [Proof_Display.string_of_rule ctxt "Failed" th])
wenzelm@17359
  1054
      |> cat_lines;
wenzelm@6896
  1055
wenzelm@17359
  1056
    fun print_results ctxt res =
wenzelm@46728
  1057
      if ! testing then ()
wenzelm@50201
  1058
      else Proof_Display.print_results Markup.state int ctxt res;
wenzelm@17359
  1059
    fun print_rule ctxt th =
wenzelm@17359
  1060
      if ! testing then rule := SOME th
wenzelm@41181
  1061
      else if int then
wenzelm@50201
  1062
        writeln (Markup.markup Markup.state (Proof_Display.string_of_rule ctxt "Successful" th))
wenzelm@17359
  1063
      else ();
wenzelm@17359
  1064
    val test_proof =
wenzelm@50315
  1065
      local_skip_proof true
wenzelm@39616
  1066
      |> Unsynchronized.setmp testing true
wenzelm@42042
  1067
      |> Exn.interruptible_capture;
wenzelm@6896
  1068
wenzelm@18124
  1069
    fun after_qed' results =
wenzelm@19482
  1070
      refine_goals print_rule (context_of state) (flat results)
wenzelm@29383
  1071
      #> check_result "Failed to refine any pending goal"
wenzelm@29383
  1072
      #> after_qed results;
wenzelm@17359
  1073
  in
wenzelm@17359
  1074
    state
wenzelm@17859
  1075
    |> local_goal print_results prep_att prepp "show" before_qed after_qed' stmt
wenzelm@21565
  1076
    |> int ? (fn goal_state =>
wenzelm@49907
  1077
      (case test_proof (map_context (Context_Position.set_visible false) goal_state) of
wenzelm@50315
  1078
        Exn.Res _ => goal_state
wenzelm@42042
  1079
      | Exn.Exn exn => raise Exn.EXCEPTIONS ([exn, ERROR (fail_msg (context_of goal_state))])))
wenzelm@17359
  1080
  end;
wenzelm@17359
  1081
wenzelm@17359
  1082
in
wenzelm@17359
  1083
wenzelm@42360
  1084
val have = gen_have (K I) Proof_Context.bind_propp_i;
wenzelm@47815
  1085
val have_cmd = gen_have Attrib.attribute_cmd Proof_Context.bind_propp;
wenzelm@42360
  1086
val show = gen_show (K I) Proof_Context.bind_propp_i;
wenzelm@47815
  1087
val show_cmd = gen_show Attrib.attribute_cmd Proof_Context.bind_propp;
wenzelm@6896
  1088
wenzelm@5820
  1089
end;
wenzelm@17359
  1090
wenzelm@28410
  1091
wenzelm@29385
  1092
wenzelm@29385
  1093
(** future proofs **)
wenzelm@29385
  1094
wenzelm@29385
  1095
(* relevant proof states *)
wenzelm@29385
  1096
wenzelm@29385
  1097
fun schematic_goal state =
wenzelm@29385
  1098
  let val (_, (_, {statement = (_, _, prop), ...})) = find_goal state
wenzelm@51553
  1099
  in Goal.is_schematic prop end;
wenzelm@29385
  1100
wenzelm@29385
  1101
fun is_relevant state =
wenzelm@29385
  1102
  (case try find_goal state of
wenzelm@29385
  1103
    NONE => true
wenzelm@29385
  1104
  | SOME (_, (_, {statement = (_, _, prop), goal, ...})) =>
wenzelm@51553
  1105
      Goal.is_schematic prop orelse not (Logic.protect prop aconv Thm.concl_of goal));
wenzelm@29385
  1106
wenzelm@29385
  1107
wenzelm@29385
  1108
(* full proofs *)
wenzelm@28410
  1109
wenzelm@29346
  1110
local
wenzelm@29346
  1111
wenzelm@49912
  1112
structure Result = Proof_Data
wenzelm@49912
  1113
(
wenzelm@49912
  1114
  type T = thm option;
wenzelm@49912
  1115
  val empty = NONE;
wenzelm@49912
  1116
  fun init _ = empty;
wenzelm@49912
  1117
);
wenzelm@49912
  1118
wenzelm@49912
  1119
fun the_result ctxt =
wenzelm@49912
  1120
  (case Result.get ctxt of
wenzelm@49912
  1121
    NONE => error "No result of forked proof"
wenzelm@49912
  1122
  | SOME th => th);
wenzelm@49912
  1123
wenzelm@49912
  1124
val set_result = Result.put o SOME;
wenzelm@49912
  1125
val reset_result = Result.put NONE;
wenzelm@49912
  1126
wenzelm@51318
  1127
in
wenzelm@51318
  1128
wenzelm@51318
  1129
fun future_proof fork_proof state =
wenzelm@28410
  1130
  let
wenzelm@29381
  1131
    val _ = assert_backward state;
wenzelm@28410
  1132
    val (goal_ctxt, (_, goal)) = find_goal state;
wenzelm@32786
  1133
    val {statement as (kind, _, prop), messages, using, goal, before_qed, after_qed} = goal;
wenzelm@47431
  1134
    val goal_tfrees =
wenzelm@47431
  1135
      fold Term.add_tfrees
wenzelm@47431
  1136
        (prop :: map Thm.term_of (Assumption.all_assms_of goal_ctxt)) [];
wenzelm@28410
  1137
wenzelm@29383
  1138
    val _ = is_relevant state andalso error "Cannot fork relevant proof";
wenzelm@29383
  1139
wenzelm@29346
  1140
    val prop' = Logic.protect prop;
wenzelm@29346
  1141
    val statement' = (kind, [[], [prop']], prop');
wenzelm@52456
  1142
    val goal' = Thm.adjust_maxidx_thm (Thm.maxidx_of goal) (Goal.protect (Thm.nprems_of goal) goal);
wenzelm@49912
  1143
    val after_qed' = (fn [[th]] => map_context (set_result th), fn [[th]] => set_result th);
wenzelm@28410
  1144
wenzelm@28973
  1145
    val result_ctxt =
wenzelm@28973
  1146
      state
wenzelm@49912
  1147
      |> map_context reset_result
wenzelm@29385
  1148
      |> map_goal I (K (statement', messages, using, goal', before_qed, after_qed'))
wenzelm@47431
  1149
        (fold (Variable.declare_typ o TFree) goal_tfrees)
wenzelm@29346
  1150
      |> fork_proof;
wenzelm@28973
  1151
wenzelm@51318
  1152
    val future_thm = Future.map (the_result o snd) result_ctxt;
wenzelm@32062
  1153
    val finished_goal = Goal.future_result goal_ctxt future_thm prop';
wenzelm@28973
  1154
    val state' =
wenzelm@28973
  1155
      state
wenzelm@51318
  1156
      |> map_goal I (K (statement, messages, using, finished_goal, NONE, after_qed)) I;
wenzelm@51318
  1157
  in (Future.map fst result_ctxt, state') end;
wenzelm@29385
  1158
wenzelm@17359
  1159
end;
wenzelm@29346
  1160
wenzelm@29385
  1161
wenzelm@51662
  1162
(* terminal proofs *)  (* FIXME avoid toplevel imitation -- include in PIDE/document *)
wenzelm@29385
  1163
wenzelm@29385
  1164
local
wenzelm@29385
  1165
wenzelm@51605
  1166
fun future_terminal_proof proof1 proof2 done int state =
wenzelm@51605
  1167
  if Goal.future_enabled_level 3 andalso not (is_relevant state) then
wenzelm@51318
  1168
    state |> future_proof (fn state' =>
wenzelm@51662
  1169
      let
wenzelm@51662
  1170
        val pos = Position.thread_data ();
wenzelm@51662
  1171
        val props = Markup.command_timing :: (Markup.nameN, "by") :: Position.properties_of pos;
wenzelm@51662
  1172
      in
wenzelm@51662
  1173
        Goal.fork_params {name = "Proof.future_terminal_proof", pos = pos, pri = ~1}
wenzelm@51662
  1174
          (fn () => ((), Timing.protocol props proof2 state'))
wenzelm@51662
  1175
      end) |> snd |> done
wenzelm@51318
  1176
  else proof1 state;
wenzelm@29385
  1177
wenzelm@29385
  1178
in
wenzelm@29385
  1179
wenzelm@51318
  1180
fun local_future_terminal_proof meths =
wenzelm@51605
  1181
  future_terminal_proof
wenzelm@51318
  1182
    (local_terminal_proof meths)
wenzelm@51318
  1183
    (local_terminal_proof meths #> context_of) local_done_proof;
wenzelm@29385
  1184
wenzelm@51318
  1185
fun global_future_terminal_proof meths =
wenzelm@51605
  1186
  future_terminal_proof
wenzelm@51318
  1187
    (global_terminal_proof meths)
wenzelm@51318
  1188
    (global_terminal_proof meths) global_done_proof;
wenzelm@29350
  1189
wenzelm@29346
  1190
end;
wenzelm@29346
  1191
wenzelm@29385
  1192
end;
wenzelm@29385
  1193