package frama-c

  1. Overview
  2. Docs
package frama-c
Legend:
Page
Library
Module
Module type
Parameter
Class
Class type
Source

Source file GuiSequent.ml

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
(**************************************************************************)
(*                                                                        *)
(*  This file is part of WP plug-in of Frama-C.                           *)
(*                                                                        *)
(*  Copyright (C) 2007-2023                                               *)
(*    CEA (Commissariat a l'energie atomique et aux energies              *)
(*         alternatives)                                                  *)
(*                                                                        *)
(*  you can redistribute it and/or modify it under the terms of the GNU   *)
(*  Lesser General Public License as published by the Free Software       *)
(*  Foundation, version 2.1.                                              *)
(*                                                                        *)
(*  It is distributed in the hope that it will be useful,                 *)
(*  but WITHOUT ANY WARRANTY; without even the implied warranty of        *)
(*  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *)
(*  GNU Lesser General Public License for more details.                   *)
(*                                                                        *)
(*  See the GNU Lesser General Public License version 2.1                 *)
(*  for more details (enclosed in the file licenses/LGPLv2.1).            *)
(*                                                                        *)
(**************************************************************************)

open Conditions
open Lang.F
type env = Plang.Env.t
module F = Lang.F
module Env = Plang.Env
module Imap = Qed.Intmap
type 'a printer = 'a Qed.Plib.printer

type v_fold = [ `Auto | `Visible | `Hidden ]
type v_term = [ v_fold | `Shared | `Name of string ]

type part = Term | Goal | Step of step

[@@@ warning "-32"]

let pp_part fmt = function
  | Term -> Format.fprintf fmt "Term"
  | Goal -> Format.fprintf fmt "Goal"
  | Step s -> Format.fprintf fmt "Step #%d" s.id

let pp_term fmt e = Format.fprintf fmt "E%03d" (F.QED.id e)

let pp_target fmt = function
  | None -> Format.pp_print_string fmt "-"
  | Some e -> Format.fprintf fmt "T%03d" (F.QED.id e)

let pp_fold fmt u = Format.pp_print_string fmt
    ( match u with `Auto -> "auto" | `Fold -> "fold" | `Unfold -> "unfold" )

[@@@ warning "+32"]

(* -------------------------------------------------------------------------- *)
(* --- Focus                                                              --- *)
(* -------------------------------------------------------------------------- *)

class autofocus =
  object(self)

    val mutable autofocus = true

    (* Term Visibility (forced by user) *)
    val mutable vterm : v_term Tmap.t = Tmap.empty

    (* Step Visibility (forced by user) *)
    val mutable vstep : v_fold Imap.t = Imap.empty

    (* Focused Terms ; lastly selected at head *)
    val mutable focusring = []
    val mutable target = F.e_true

    (* Memoization of focused terms and steps occurrence *)
    val mutable occurs_term : bool Tmap.t = Tmap.empty
    val mutable occurs_step : bool Imap.t = Imap.empty

    (* Currently displayed sequent *)
    val mutable sequent : Conditions.sequent option = None

    method clear =
      begin
        sequent <- None ;
        self#reset ;
      end

    method reset =
      begin
        focusring <- [] ;
        vterm <- Tmap.empty ;
        vstep <- Imap.empty ;
        self#clear_cache ;
      end

    method private clear_cache =
      begin
        occurs_term <- Tmap.empty ;
        occurs_step <- Imap.empty ;
      end

    method private clear_steps =
      occurs_step <- Imap.empty

    (* --- Environment --- *)

    method env =
      let env = Env.create () in
      Tmap.iter
        (fun t v -> match v with
           | `Auto -> ()
           | `Hidden -> Env.define env "..." t
           | `Visible -> Env.unfold env t
           | `Shared ->
             let base = F.basename t in
             let sanitizer = Plang.sanitizer in
             Env.define env (Env.fresh env ~sanitizer base) t
           | `Name x ->
             Env.define env x t)
        vterm ; env

    (* --- Term Occurrence --- *)

    method private occurs_term e =
      try Tmap.find e occurs_term
      with Not_found ->
        let occurs =
          try
            if List.memq e focusring then raise Exit ;
            if e != F.e_true && e == target then raise Exit ;
            F.lc_iter (fun e -> if self#occurs_term e then raise Exit) e ;
            false
          with Exit -> true
        in occurs_term <- Tmap.add e occurs occurs_term ; occurs

    method private occurs_seq seq =
      try
        Conditions.iter
          (fun s -> if self#occurs_step s then raise Exit) seq ;
        false
      with Exit -> true

    method private occurs_state s =
      try
        Mstate.iter
          (fun _m v -> if self#occurs_term v then raise Exit) s ;
        false
      with Exit -> true

    method private occurs_step step =
      try step.id < 0 (* defensive *) || Imap.find step.id occurs_step
      with Not_found ->
        let occurs =
          match step.condition with
          | When _ -> true
          | State s -> self#occurs_state s
          | Init p | Have p | Type p | Core p ->
            self#occurs_term (F.e_prop p)
          | Branch(p,sa,sb) ->
            self#occurs_term (F.e_prop p)
            || self#occurs_seq sa
            || self#occurs_seq sb
          | Either cs ->
            List.exists self#occurs_seq cs
        in occurs_step <- Imap.add step.id occurs occurs_step ; occurs

    (* --- Term Visibility --- *)

    method set_term t = function
      | `Auto ->
        if Tmap.mem t vterm then
          (vterm <- Tmap.remove t vterm ; self#clear_cache)
      | v ->
        let same =
          try v = Tmap.find t vterm
          with Not_found -> false in
        if not same then
          (vterm <- Tmap.add t v vterm ; self#clear_cache)

    method get_term t = try Tmap.find t vterm with Not_found -> `Auto

    method set_target e = target <- e
    method clear_target = target <- F.e_true

    method focus ~extend e =
      if F.lc_closed e then
        begin
          let ring = if extend
            then (List.filter (fun e0 -> e0 != e) focusring)
            else [] in
          focusring <- e :: ring ;
          self#clear_cache ;
        end

    method unfocus e =
      begin
        focusring <- List.filter (fun e0 -> e0 != e) focusring ;
        self#clear_cache ;
      end

    method unfocus_last =
      begin match focusring with
        | [] -> ()
        | _::es -> focusring <- es ; self#clear_cache
      end

    method is_selected e = match focusring with e0::_ -> e0 == e | [] -> false
    method is_focused e = List.memq e focusring
    method is_visible e = if autofocus then self#occurs_term e else true
    method is_targeted e = autofocus && self#occurs_term e

    method set_autofocus flag =
      autofocus <- flag ;
      if flag then self#clear_cache else self#reset

    method get_autofocus = autofocus

    method is_autofocused =
      autofocus && Tmap.is_empty vterm

    (* --- Sequent Management --- *)

    method set_step s = function
      | `Auto ->
        if Imap.mem s.id vstep then
          (vstep <- Imap.remove s.id vstep ; self#clear_steps)
      | v ->
        let same =
          try v = Imap.find s.id vstep
          with Not_found -> false in
        if not same then
          (vstep <- Imap.add s.id v vstep ; self#clear_steps)

    method get_step s =
      try Imap.find s.id vstep
      with Not_found -> `Auto

    method is_visible_step (s : step) =
      match self#get_step s with
      | `Auto -> if autofocus then self#occurs_step s else true
      | `Visible -> true
      | `Hidden -> false

    method locate a =
      match sequent with
      | None -> Tactical.Empty
      | Some (hs,goal) ->
        if F.is_subterm a (F.e_prop goal)
        then Tactical.(Inside(Goal goal,a))
        else
          let pool = ref Tactical.Empty in
          let rec lookup_sequence a hs =
            Conditions.iter
              (fun step ->
                 match step.condition with
                 | (Have p | When p | Branch(p,_,_))
                   when F.is_subterm a (F.e_prop p) ->
                   pool := Tactical.(Inside(Step step,a)) ;
                   raise Exit
                 | Branch(_,sa,sb) ->
                   lookup_sequence a sa ;
                   lookup_sequence a sb ;
                 | Either cs ->
                   List.iter (lookup_sequence a) cs
                 | State _ | Type _ | Init _ | Have _ | When _ | Core _ -> ()
              ) hs in
          (try lookup_sequence a hs with Exit -> ()) ;
          !pool

    (* ---- Global ----- *)

    method set_sequent (s : sequent) =
      let updated = match sequent with None -> true | Some s0 -> s0 != s in
      if updated then
        begin
          sequent <- Some s ;
          Conditions.index s ;
          vstep <- Imap.empty ;
          self#clear_cache ;
        end ;
      updated

  end

(* -------------------------------------------------------------------------- *)
(* --- Term Engine                                                        --- *)
(* -------------------------------------------------------------------------- *)

class type term_selection =
  object
    method is_focused : term -> bool
    method is_visible : term -> bool
    method is_targeted : term -> bool
  end

class plang
    ~(term : term Wtext.marker)
    ~(focus : term Wtext.marker)
    ~(target : term Wtext.marker)
    (autofocus : term_selection)
  =
  object(self)
    inherit Pcond.state as super

    method! shareable e = autofocus#is_targeted e || super#shareable e

    val mutable tgt = F.e_true
    method set_target t = tgt <- t
    method clear_target = tgt <- F.e_true

    method private wrap pp fmt e =
      if e != F.e_true && e == tgt then
        target#wrap pp fmt e
      else
      if autofocus#is_focused e then
        focus#wrap pp fmt e
      else
      if F.lc_closed e then
        term#wrap pp fmt e
      else
        pp fmt e

    method! pp_at fmt lbl = Format.fprintf fmt "@{<wp:label>@@%a@}" super#pp_label lbl
    method! pp_label fmt lbl = Format.fprintf fmt "@{<wp:label>%a@}" super#pp_label lbl
    method! pp_var fmt x = Format.fprintf fmt "@{<wp:var>%s@}" x
    method! pp_flow fmt e = self#wrap super#pp_flow fmt e
    method! pp_atom fmt e = self#wrap super#pp_atom fmt e
  end

(* -------------------------------------------------------------------------- *)
(* --- Sequent Engine                                                     --- *)
(* -------------------------------------------------------------------------- *)

class type step_selection =
  object
    method is_visible : term -> bool
    method is_visible_step : step -> bool
  end

class pcond
    ~(part : part Wtext.marker)
    ~(target : part Wtext.marker)
    (focus : step_selection)
    (plang : Pcond.state) =
  object(self)
    inherit Pcond.seqengine plang as super

    (* All displayed entries *)
    val mutable domain = Vars.empty
    val mutable ellipsed = false
    val mutable parts : part Wtext.entry list = []
    val mutable tgt : part = Term (* empty *)

    (* Register displayed entries *)
    initializer part#on_add (fun entry -> parts <- entry :: parts)

    method set_target p = tgt <- p

    method part p q =
      try
        let (_,_,part) =
          List.find
            (fun (a,b,_) -> a <= p && q <= b)
            (List.rev parts)
        in part (* find the tightest step, which was added first *)
      with Not_found -> Term

    (* Step Visibility Management *)

    method visible step =
      focus#is_visible_step step ||
      match tgt with
      | Term | Goal -> false
      | Step s -> s.id = step.id

    method private domain seq =
      Conditions.iter
        (fun step ->
           if self#visible step && not (Vars.subset step.vars domain)
           then
             begin
               match step.condition with
               | State _ -> ()
               | Have p | Init p | Core p | When p | Type p ->
                 domain <- Vars.union (F.varsp p) domain
               | Branch(p,a,b) ->
                 domain <- Vars.union (F.varsp p) domain ;
                 self#domain a ; self#domain b
               | Either cs -> List.iter self#domain cs
             end
        ) seq

    (* local-variable marking ; not hover/clickable marks *)
    method! mark (m : F.marks) s = if self#visible s then super#mark m s

    method! pp_step fmt step =
      if self#visible step then
        begin
          ellipsed <- false ;
          match tgt with
          | Step { condition = State _ } -> super#pp_step fmt step
          | Step s when s == step ->
            target#mark (Step step) super#pp_step fmt step
          | _ ->
            part#mark (Step step) super#pp_step fmt step
        end
      else
        ( if not ellipsed then Format.fprintf fmt "@ [...]" ; ellipsed <- true )

    method! pp_goal fmt goal =
      match tgt with
      | Goal ->
        target#mark Goal super#pp_goal fmt goal
      | _ ->
        part#mark Goal super#pp_goal fmt goal

    method! pp_block ~clause fmt seq =
      try
        Conditions.iter
          (fun step ->
             if self#visible step then
               raise Exit)
          seq ;
        Format.fprintf fmt "@ %a { ... }" self#pp_clause clause
      with Exit ->
        begin
          ellipsed <- false ;
          super#pp_block ~clause fmt seq ;
          ellipsed <- false ;
        end

    (* Global Call *)

    method! set_sequence hyps =
      parts <- [] ;
      domain <- Vars.empty ;
      super#set_sequence hyps ;
      if self#get_state then
        begin
          self#domain hyps ;
          plang#set_domain domain ;
        end

  end

(* -------------------------------------------------------------------------- *)
(* --- Printer                                                            --- *)
(* -------------------------------------------------------------------------- *)

type target = part * F.term option

class focused (wtext : Wtext.text) =
  let parts : part Wtext.marker = wtext#marker in
  let terms : term Wtext.marker = wtext#marker in
  let focus : term Wtext.marker = wtext#marker in
  let button : (unit -> unit) Wtext.marker = wtext#marker in
  let target_term : term Wtext.marker = wtext#marker in
  let target_part : part Wtext.marker = wtext#marker in
  let autofocus = new autofocus in
  let term_selection = (autofocus :> term_selection) in
  let step_selection = (autofocus :> step_selection) in
  let plang = new plang ~term:terms ~focus:focus ~target:target_term
    term_selection in
  let pcond = new pcond ~part:parts ~target:target_part
    step_selection (plang :> Pcond.state) in
  let popup = new Widget.popup () in
  object(self)
    val mutable demon = []
    val mutable items = []
    val mutable sequent = Conditions.empty , F.p_true
    val mutable selected_term = None
    val mutable selected_part = Term
    val mutable targeted = []

    initializer
      begin
        wtext#set_font "Monospace" ;
        wtext#set_css [
          "wp:clause" , [`WEIGHT `BOLD] ;
          "wp:comment" , [`FOREGROUND "darkgreen"] ;
          "wp:property" , [`FOREGROUND "blue"] ;
          "wp:label" , [`FOREGROUND "darkgreen"] ;
          "wp:stmt" , [`WEIGHT `BOLD;`FOREGROUND "darkgreen"] ;
          "wp:var" , [`STYLE `ITALIC] ;
        ] ;
        terms#set_hover [`BACKGROUND "lightblue"] ;
        parts#set_hover [`BACKGROUND "lightgreen"] ;
        focus#set_style [`BACKGROUND "wheat"] ;
        button#set_style [`BACKGROUND "lightblue" ];
        button#set_hover [`BACKGROUND "orange" ];
        button#on_click (fun (_,_,cb) -> cb ()) ;
        target_part#set_style [`BACKGROUND "orange"] ;
        target_term#set_style [`BACKGROUND "orange"] ;
        parts#on_click self#on_part ;
        parts#on_right_click self#on_popup_part ;
        terms#on_click (self#on_term ~extend:false) ;
        terms#on_shift_click (self#on_term ~extend:true) ;
        terms#on_right_click self#on_popup_term ;
        focus#on_click self#on_select ;
        focus#on_right_click self#on_popup_term ;
        target_part#on_right_click self#on_popup_part ;
        target_term#on_right_click self#on_popup_term ;
        target_part#on_add (fun (p,q,_) -> self#added_zone p q) ;
        target_term#on_add (fun (p,q,_) -> self#added_zone p q) ;
      end

    method reset =
      selected_term <- None ;
      selected_part <- Term ;
      targeted <- [] ;
      autofocus#reset

    method private added_zone p q = targeted <- (p,q) :: targeted
    method private target_zone =
      try
        List.find
          (fun (p,q) ->
             match selected_part , pcond#part p q with
             | Goal , Goal -> true
             | Step s , Step s' -> s.id = s'.id
             | _ -> false
          ) targeted
      with Not_found -> 0,0

    method get_focus_mode = autofocus#get_autofocus
    method set_focus_mode = autofocus#set_autofocus

    method get_state_mode = pcond#get_state
    method set_state_mode = pcond#set_state

    method set_iformat = plang#set_iformat
    method get_iformat = plang#get_iformat

    method set_rformat = plang#set_rformat
    method get_rformat = plang#get_rformat

    method selected =
      begin
        self#set_target self#selection ;
        List.iter (fun f -> f ()) demon ;
      end

    method on_selection f =
      demon <- demon @ [f]

    method on_popup (f : Widget.popup -> unit) =
      items <- items @ [f]

    method private item ~label ~callback =
      let callback () = let () = callback () in self#selected in
      popup#add_item ~label ~callback

    method private popup_term e =
      match autofocus#get_term e with
      | `Auto ->
        begin
          if autofocus#is_focused e then
            self#item ~label:"Un-focus Term"
              ~callback:(fun () -> autofocus#unfocus e) ;
          self#item ~label:"Hide Term"
            ~callback:(fun () -> autofocus#set_term e `Hidden) ;
          self#item ~label:"Don't Share"
            ~callback:(fun () -> autofocus#set_term e `Visible) ;
        end
      | `Hidden ->
        self#item ~label:"Show Term"
          ~callback:(fun () -> autofocus#set_term e `Auto)
      | `Visible | `Name _ | `Shared ->
        self#item ~label:"Autofocus"
          ~callback:(fun () -> autofocus#set_term e `Auto)

    method private popup_part = function
      | Goal | Term ->
        self#item
          ~label:"Reset Autofocus"
          ~callback:(fun () -> autofocus#reset)
      | Step step ->
        if autofocus#is_visible_step step then
          self#item ~label:"Hide Clause"
            ~callback:(fun () -> autofocus#set_step step `Hidden)
        else
          self#item ~label:"Show Clause"
            ~callback:(fun () -> autofocus#set_step step `Visible)

    method popup =
      begin
        popup#clear ;
        begin match selected_term with
          | Some e -> self#popup_term e
          | None -> self#popup_part selected_part
        end ;
        popup#add_separator ;
        List.iter (fun f -> f popup) items ;
        popup#run () ;
      end

    method selection =
      let inside clause t =
        if F.p_bool t == Tactical.head clause
        then Tactical.(Clause clause)
        else Tactical.(Inside(clause,t))
      in
      match selected_part , selected_term with
      | Term , None -> Tactical.Empty
      | Goal , None -> Tactical.(Clause(Goal(snd sequent)))
      | Step s , None -> Tactical.(Clause(Step s))
      | Term , Some t -> autofocus#locate t
      | Goal , Some t -> inside Tactical.(Goal (snd sequent)) t
      | Step s , Some t -> inside Tactical.(Step s) t

    method unselect =
      begin
        let p = selected_part in selected_part <- Term ;
        let t = selected_term in selected_term <- None ;
        autofocus#unfocus_last ;
        p,t
      end

    method restore (p,t) =
      begin
        selected_part <- p ;
        selected_term <- t ;
        self#set_target self#selection ;
      end

    method set_target tgt =
      match tgt with
      | Tactical.Empty | Tactical.Compose _ | Tactical.Multi _ ->
        begin
          pcond#set_target Term ;
          plang#clear_target ;
          autofocus#clear_target ;
        end
      | Tactical.Inside (_,t) ->
        begin
          pcond#set_target Term ;
          plang#set_target t ;
          autofocus#set_target t ;
        end
      | Tactical.Clause (Tactical.Goal _) ->
        begin
          pcond#set_target Goal ;
          plang#clear_target ;
          autofocus#clear_target ;
        end
      | Tactical.Clause (Tactical.Step s) ->
        begin
          pcond#set_target (Step s) ;
          plang#clear_target ;
          autofocus#clear_target ;
        end

    method private on_term ~extend (p,q,e) =
      if F.lc_closed e then (* defensive *)
        begin
          selected_term <- Some e ;
          selected_part <- pcond#part p q ;
          autofocus#focus ~extend e ;
          self#selected ;
        end

    method private on_select (p,q,e) =
      if F.lc_closed e then (* defensive *)
        begin
          selected_term <- Some e ;
          selected_part <- pcond#part p q ;
          self#selected ;
        end

    method private on_part (_,_,part) =
      begin
        selected_term <- None ;
        selected_part <- part ;
        autofocus#reset ;
        self#selected ;
      end

    method private on_popup_term (p,q,e) =
      if F.lc_closed e then (* defensive *)
        begin
          selected_term <- Some e;
          selected_part <- pcond#part p q ;
          self#popup ;
        end

    method private on_popup_part (_,_,part) =
      begin
        selected_term <- None ;
        selected_part <- part ;
        self#popup ;
      end

    method pp_term fmt e = plang#pp_sort fmt e
    method pp_pred fmt p = plang#pp_pred fmt p

    method pp_selection fmt = function
      | Tactical.Empty -> Format.fprintf fmt " - "
      | Tactical.Compose(Tactical.Range(a,b)) ->
        Format.fprintf fmt "%d..%d" a b
      | sel -> self#pp_term fmt (Tactical.selected sel)

    method sequent = sequent

    method pp_sequent s fmt =
      sequent <- s ;
      if autofocus#set_sequent s then
        begin
          selected_term <- None ;
          selected_part <- Term ;
        end ;
      targeted <- [] ;
      let env = autofocus#env in
      if pcond#get_state then Env.set_indexed_vars env ;
      pcond#pp_esequent env fmt s ;
      let p,q = self#target_zone in
      if p > 0 && q > p then
        (Wutil.later (fun () -> wtext#select ~scroll:true p q))

    method goal w fmt =
      let open Wpo in
      match w.po_formula with
      | GoalLemma _ ->
        Format.fprintf fmt "@\n@{<wp:clause>Lemma@} %a:@\n" Wpo.pp_title w ;
        let _,sequent = Wpo.compute w in
        self#pp_sequent sequent fmt
      | GoalAnnot _ ->
        Format.fprintf fmt "@\n@{<wp:clause>Goal@} %a:@\n" Wpo.pp_title w ;
        let _,sequent = Wpo.compute w in
        self#pp_sequent sequent fmt

    method button ~title ~callback fmt =
      let pp_title fmt title = Format.fprintf fmt " %s " title in
      Format.fprintf fmt "[%a]" (button#mark callback pp_title) title

  end
OCaml

Innovation. Community. Security.

GitHub Discord Twitter Peertube RSS
About
Changelog Releases Industrial Users Academic Users Why OCaml
Ecosystem
Packages Community Events OCaml Planet Jobs
Resources
Install OCaml Get Started Platform Tools Language Manual Standard Library API Books Exercises Papers OCaml Playground Logo
Policies
Carbon Footprint Governance Privacy Code of Conduct