session_itp.ml 60.6 KB
Newer Older
1 2 3 4 5





Clément Fumex's avatar
Clément Fumex committed
6 7 8 9 10
open Stdlib

module Hprover = Whyconf.Hprover

let debug = Debug.register_info_flag "session_itp"
Clément Fumex's avatar
Clément Fumex committed
11 12
    ~desc:"Pring@ debugging@ messages@ about@ Why3@ session@ \
           creation,@ reading@ and@ writing."
Clément Fumex's avatar
Clément Fumex committed
13

Sylvain Dailler's avatar
Sylvain Dailler committed
14 15
let debug_stack_trace = Debug.lookup_flag "stack_trace"

Clément Fumex's avatar
Clément Fumex committed
16 17
type transID = int
type proofNodeID = int
18
type proofAttemptID = int
Clément Fumex's avatar
Clément Fumex committed
19

MARCHE Claude's avatar
MARCHE Claude committed
20 21 22
let print_proofNodeID fmt id =
  Format.fprintf fmt "%d" id

Clément Fumex's avatar
Clément Fumex committed
23
type theory = {
Clément Fumex's avatar
Clément Fumex committed
24 25
  theory_name                   : Ident.ident;
  theory_goals                  : proofNodeID list;
26
  theory_parent_name            : string;
Clément Fumex's avatar
Clément Fumex committed
27 28
  mutable theory_detached_goals : proofNodeID list;
  mutable theory_checksum       : Termcode.checksum option;
Clément Fumex's avatar
Clément Fumex committed
29 30
}

31
let theory_name t = t.theory_name
32
let theory_goals t = t.theory_goals
Clément Fumex's avatar
Clément Fumex committed
33
let theory_detached_goals t = t.theory_detached_goals
34

Clément Fumex's avatar
Clément Fumex committed
35
type proof_parent = Trans of transID | Theory of theory
Clément Fumex's avatar
Clément Fumex committed
36

37 38
type proof_attempt_node = {
  parent                 : proofNodeID;
Clément Fumex's avatar
Clément Fumex committed
39 40 41
  prover                 : Whyconf.prover;
  limit                  : Call_provers.resource_limit;
  mutable proof_state    : Call_provers.prover_result option;
Clément Fumex's avatar
Clément Fumex committed
42
  (* None means that the call was not done or never returned *)
Clément Fumex's avatar
Clément Fumex committed
43 44
  mutable proof_obsolete : bool;
  proof_script           : string option;  (* non empty for external ITP *)
Clément Fumex's avatar
Clément Fumex committed
45 46 47
}

type proof_node = {
Clément Fumex's avatar
Clément Fumex committed
48
  proofn_name                    : Ident.ident;
MARCHE Claude's avatar
MARCHE Claude committed
49
  proofn_expl                    : string;
Clément Fumex's avatar
Clément Fumex committed
50
  proofn_task                    : Task.task;
51
  proofn_table                   : Task.names_table option;
Clément Fumex's avatar
Clément Fumex committed
52
  proofn_parent                  : proof_parent;
53
  proofn_checksum                : Termcode.checksum option;
Clément Fumex's avatar
Clément Fumex committed
54
  proofn_shape                   : Termcode.shape;
55
  proofn_attempts                : proofAttemptID Hprover.t;
Clément Fumex's avatar
Clément Fumex committed
56 57 58 59
  mutable proofn_transformations : transID list;
}

type transformation_node = {
Clément Fumex's avatar
Clément Fumex committed
60 61 62 63 64
  transf_name                      : string;
  transf_args                      : string list;
  transf_subtasks                  : proofNodeID list;
  transf_parent                    : proofNodeID;
  mutable transf_detached_subtasks : proofNodeID list;
Clément Fumex's avatar
Clément Fumex committed
65 66 67
}

type file = {
Clément Fumex's avatar
Clément Fumex committed
68 69
  file_name              : string;
  file_format            : string option;
70 71
  mutable file_theories          : theory list;
  mutable file_detached_theories : theory list;
Clément Fumex's avatar
Clément Fumex committed
72 73
}

74 75 76 77 78
let file_name f = f.file_name
let file_format f = f.file_format
let file_theories f = f.file_theories
let file_detached_theories f = f.file_detached_theories

79 80 81 82 83 84 85
type any =
  | AFile of file
  | ATh of theory
  | ATn of transID
  | APn of proofNodeID
  | APa of proofAttemptID

86 87
module Hpn = Hint
module Htn = Hint
88
module Hpan = Hint
89

90
type session = {
91 92
  proofAttempt_table            : proof_attempt_node Hint.t;
  mutable next_proofAttemptID   : int;
Clément Fumex's avatar
Clément Fumex committed
93
  proofNode_table               : proof_node Hint.t;
Clément Fumex's avatar
Clément Fumex committed
94 95 96
  mutable next_proofNodeID      : int;
  trans_table                   : transformation_node Hint.t;
  mutable next_transID          : int;
Clément Fumex's avatar
Clément Fumex committed
97
  session_dir                   : string; (** Absolute path *)
Clément Fumex's avatar
Clément Fumex committed
98 99 100
  session_files                 : file Hstr.t;
  mutable session_shape_version : int;
  session_prover_ids            : int Hprover.t;
101 102 103 104 105
  (* proved status *)
  file_state: bool Hstr.t;
  th_state: bool Ident.Hid.t;
  tn_state: bool Htn.t;
  pn_state : bool Hpn.t;
Clément Fumex's avatar
Clément Fumex committed
106
}
Clément Fumex's avatar
Clément Fumex committed
107

108 109 110
let theory_parent s th =
  Hstr.find s.session_files th.theory_parent_name

111
let session_iter_proof_attempt f s =
112
  Hint.iter f s.proofAttempt_table
113

114
(* This is not needed. Keeping it as information on the structure
115 116 117 118 119 120 121
type tree = {
    tree_node_id : proofNodeID;
    tree_goal_name : string;
    tree_proof_attempts : proof_attempt list; (* proof attempts on this node *)
    tree_transformations : (transID * string * tree list) list;
                                (* transformations on this node *)
  }
122
*)
MARCHE Claude's avatar
MARCHE Claude committed
123

124
(*
Clément Fumex's avatar
Clément Fumex committed
125
let rec get_tree s id : tree =
MARCHE Claude's avatar
MARCHE Claude committed
126
  let t = Hint.find s.proofNode_table id in
MARCHE Claude's avatar
MARCHE Claude committed
127
  let pal =
128
    Hprover.fold (fun _ pa acc -> pa.proofa_attempt::acc) t.proofn_attempts []
MARCHE Claude's avatar
MARCHE Claude committed
129
  in
MARCHE Claude's avatar
MARCHE Claude committed
130
  let trl = List.map (get_trans s) t.proofn_transformations in
131 132 133 134 135
  { tree_node_id = id;
    tree_goal_name = t.proofn_name.Ident.id_string;
    tree_proof_attempts = pal;
    tree_transformations = trl;
  }
MARCHE Claude's avatar
MARCHE Claude committed
136 137 138

and get_trans s id =
  let tr = Hint.find s.trans_table id in
Clément Fumex's avatar
Clément Fumex committed
139
  (id, tr.transf_name, List.map (get_tree s) tr.transf_subtasks)
140
*)
MARCHE Claude's avatar
MARCHE Claude committed
141

142
(*
Clément Fumex's avatar
Clément Fumex committed
143
let get_theories s =
MARCHE Claude's avatar
MARCHE Claude committed
144
  Hstr.fold
145
    (fun _fn f acc ->
MARCHE Claude's avatar
MARCHE Claude committed
146 147
     let c =
       List.map
Clément Fumex's avatar
Clément Fumex committed
148
         (fun th -> (th.theory_name.Ident.id_string, th.theory_goals))
MARCHE Claude's avatar
MARCHE Claude committed
149 150
         f.file_theories
     in
151
     (f,c) :: acc)
MARCHE Claude's avatar
MARCHE Claude committed
152
    s.session_files []
153 154 155
 *)

let get_files s = s.session_files
156
let get_file s name = Hstr.find s.session_files name
Clément Fumex's avatar
Clément Fumex committed
157 158 159
let get_dir s = s.session_dir

let get_shape_version s = s.session_shape_version
MARCHE Claude's avatar
MARCHE Claude committed
160

161
(*
Clément Fumex's avatar
Clément Fumex committed
162 163 164 165 166
let get_node (s : session) (n : int) =
  let _ = Hint.find s.proofNode_table n in n

let get_trans (s : session) (n : int) =
  let _ = Hint.find s.trans_table n in n
167
*)
Clément Fumex's avatar
Clément Fumex committed
168

169
(* Generation of new IDs *)
Clément Fumex's avatar
Clément Fumex committed
170 171 172 173 174 175 176 177 178 179
let gen_transID (s : session) =
  let id = s.next_transID in
  s.next_transID <- id + 1;
  id

let gen_proofNodeID (s : session) =
  let id = s.next_proofNodeID in
  s.next_proofNodeID <- id + 1;
  id

180 181 182 183 184
let gen_proofAttemptID (s : session) =
  let id = s.next_proofAttemptID in
  s.next_proofAttemptID <- id + 1;
  id

185 186
(* Get elements of the session tree *)

Clément Fumex's avatar
Clément Fumex committed
187
exception BadID
188

189
let get_proof_attempt_node (s : session) (id : proofAttemptID) =
190 191 192 193
  try
    Hint.find s.proofAttempt_table id
  with Not_found -> raise BadID

Clément Fumex's avatar
Clément Fumex committed
194 195 196 197 198
let get_proofNode (s : session) (id : proofNodeID) =
  try
    Hint.find s.proofNode_table id
  with Not_found -> raise BadID

199 200 201 202
let get_task (s:session) (id:proofNodeID) =
  let node = get_proofNode s id in
  node.proofn_task

203
let get_table (s: session) (id: proofNodeID) =
204 205 206
  let node = get_proofNode s id in
  node.proofn_table

Clément Fumex's avatar
Clément Fumex committed
207 208 209 210 211
let get_transfNode (s : session) (id : transID) =
  try
    Hint.find s.trans_table id
  with Not_found -> raise BadID

Clément Fumex's avatar
Clément Fumex committed
212 213 214
let get_transformations (s : session) (id : proofNodeID) =
  (get_proofNode s id).proofn_transformations

215 216 217
let get_proof_attempt_ids (s : session) (id : proofNodeID) =
  (get_proofNode s id).proofn_attempts

MARCHE Claude's avatar
MARCHE Claude committed
218
let get_proof_attempt_parent (s : session) (a : proofAttemptID) =
219
  (get_proof_attempt_node s a).parent
MARCHE Claude's avatar
MARCHE Claude committed
220

221
let get_proof_attempts (s : session) (id : proofNodeID) =
222
  Hprover.fold (fun _ a l ->
223 224
                let pa = get_proof_attempt_node s a in
                pa :: l)
225
               (get_proofNode s id).proofn_attempts []
226

Clément Fumex's avatar
Clément Fumex committed
227 228 229
let get_sub_tasks (s : session) (id : transID) =
  (get_transfNode s id).transf_subtasks

Clément Fumex's avatar
Clément Fumex committed
230 231 232
let get_detached_sub_tasks (s : session) (id : transID) =
  (get_transfNode s id).transf_detached_subtasks

233 234 235 236
let get_transf_args (s : session) (id : transID) =
  (get_transfNode s id).transf_args

let get_transf_name (s : session) (id : transID) =
237 238 239 240 241
  (get_transfNode s id).transf_name

let get_proof_name (s : session) (id : proofNodeID) =
  (get_proofNode s id).proofn_name

MARCHE Claude's avatar
MARCHE Claude committed
242 243 244
let get_proof_expl (s : session) (id : proofNodeID) =
  (get_proofNode s id).proofn_expl

245 246 247 248 249 250
let get_proof_parent (s : session) (id : proofNodeID) =
  (get_proofNode s id).proofn_parent

let get_trans_parent (s : session) (id : transID) =
  (get_transfNode s id).transf_parent

251 252 253 254 255 256 257 258 259 260 261 262 263 264
(* TODO to be done with detached transformations *)
let get_detached_trans (_s: session) (_id: proofNodeID) =
  []

let is_detached (s: session) (a: any) =
  match a with
  | AFile _file -> false
  | ATh th     ->
    let parent_name = th.theory_parent_name in
    let parent = Hstr.find s.session_files parent_name in
    List.exists (fun x -> x = th) parent.file_detached_theories
  | ATn tn     ->
    let pn_id = get_trans_parent s tn in
    let pn = get_proofNode s pn_id in
Sylvain Dailler's avatar
Sylvain Dailler committed
265 266
    pn.proofn_task = None ||
    List.exists (fun x -> x = tn) (get_detached_trans s pn_id)
267 268 269 270 271 272 273
  | APn pn     ->
    let pn = get_proofNode s pn in
    pn.proofn_task = None
  | APa pa     ->
    let pa = get_proof_attempt_node s pa in
    let pn_id = pa.parent in
    let pn = get_proofNode s pn_id in
274
    pn.proofn_task = None
275

Sylvain Dailler's avatar
Sylvain Dailler committed
276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299
let rec get_encapsulating_theory s any =
  match any with
  | AFile _f -> assert (false)
  | ATh th -> th
  | ATn tn ->
      let pn_id = get_trans_parent s tn in
      get_encapsulating_theory s (APn pn_id)
  | APn pn ->
      (match get_proof_parent s pn with
      | Theory th -> th
      | Trans tn -> get_encapsulating_theory s (ATn tn)
      )
  | APa pa ->
      let pn = get_proof_attempt_parent s pa in
      get_encapsulating_theory s (APn pn)

let get_encapsulating_file s any =
  match any with
  | AFile f -> f
  | ATh th -> theory_parent s th
  | _ ->
      let th = get_encapsulating_theory s any in
      theory_parent s th

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

(* Iterations functions on the session tree *)

let rec fold_all_any_of_transn s f acc trid =
  let tr = get_transfNode s trid in
  let acc =
    List.fold_left
      (fold_all_any_of_proofn s f)
      acc tr.transf_subtasks
  in
  f acc (ATn trid)

and fold_all_any_of_proofn s f acc pnid =
  let pn = get_proofNode s pnid in
  let acc =
    List.fold_left
      (fun acc trid ->
        fold_all_any_of_transn s f acc trid)
      acc pn.proofn_transformations
  in
  let acc =
    Hprover.fold
      (fun _p paid acc ->
        f acc (APa paid))
      pn.proofn_attempts acc
  in
  f acc (APn pnid)

let fold_all_any_of_theory s f acc th =
  let acc = List.fold_left (fold_all_any_of_proofn s f) acc th.theory_goals in
  f acc (ATh th)

let fold_all_any_of_file s f acc file =
Sylvain Dailler's avatar
Sylvain Dailler committed
333 334
  let acc =
    List.fold_left (fold_all_any_of_theory s f) acc file.file_theories in
335 336 337 338 339 340 341 342 343 344
  f acc (AFile file)

let fold_all_any s f acc any =
  match any with
  | AFile file -> fold_all_any_of_file s f acc file
  | ATh th -> fold_all_any_of_theory s f acc th
  | APn pn -> fold_all_any_of_proofn s f acc pn
  | ATn tn -> fold_all_any_of_transn s f acc tn
  | APa _ -> f acc any

345 346 347 348
let fold_all_session s f acc =
  let files = get_files s in
  Hstr.fold (fun _key file acc -> fold_all_any s f acc (AFile file)) files acc

349

350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365
let rec fold_all_sub_goals_of_proofn s f acc pnid =
  let pn = get_proofNode s pnid in
  let acc =
    List.fold_left
      (fun acc trid ->
         let tr = get_transfNode s trid in
         List.fold_left
           (fold_all_sub_goals_of_proofn s f)
           acc tr.transf_subtasks)
      acc pn.proofn_transformations
  in
  f acc pn

let fold_all_sub_goals_of_theory s f acc th =
  List.fold_left (fold_all_sub_goals_of_proofn s f) acc th.theory_goals

Clément Fumex's avatar
Clément Fumex committed
366 367 368 369 370
let theory_iter_proofn s f th =
  fold_all_sub_goals_of_theory s (fun _ -> f) () th

let theory_iter_proof_attempt s f th =
  theory_iter_proofn s
371
    (fun pn -> Hprover.iter (fun _ pan ->
372 373 374
                             let pan = get_proof_attempt_node s pan in
                             f pan)
         pn.proofn_attempts) th
Clément Fumex's avatar
Clément Fumex committed
375

376 377 378



Sylvain Dailler's avatar
Sylvain Dailler committed
379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401
(**************)
(* Copy/Paste *)
(**************)

let get_any_parent s a =
  match a with
  | AFile _f -> None
  | ATh th  -> Some (AFile (theory_parent s th))
  | ATn tr  -> Some (APn (get_trans_parent s tr))
  | APn pn  ->
      (match (get_proofNode s pn).proofn_parent with
      | Theory th -> Some (ATh th)
      | Trans tr -> Some (ATn tr))
  | APa pa  ->
      Some (APn (get_proof_attempt_node s pa).parent)

(* True if bid is an ancestor of aid, false if not *)
let rec is_below s (aid: any) (bid: any) =
  aid = bid ||
  match (get_any_parent s aid) with
  | None     -> false
  | Some pid -> is_below s pid bid

Clément Fumex's avatar
Clément Fumex committed
402 403 404
open Format
open Ident

MARCHE Claude's avatar
MARCHE Claude committed
405 406 407
let print_proof_attempt fmt pa =
  fprintf fmt "%a tl=%d %a"
          Whyconf.print_prover pa.prover
408
          pa.limit.Call_provers.limit_time
MARCHE Claude's avatar
MARCHE Claude committed
409 410
          (Pp.print_option Call_provers.print_prover_result) pa.proof_state

411 412 413 414 415 416 417
let rec print_proof_node s (fmt: Format.formatter) p =
  let pn = get_proofNode s p in
  let parent = match pn.proofn_parent with
  | Theory t -> t.theory_name.id_string
  | Trans id -> (get_transfNode s id).transf_name
  in
  fprintf fmt
MARCHE Claude's avatar
MARCHE Claude committed
418
    "@[<hv 1> Goal %s;@ parent %s;@ sum %s;@ @[<hv 1>[%a]@]@ @[<hv 1>[%a]@]@]"
419 420 421
    pn.proofn_name.id_string parent
    (Opt.fold (fun _ a -> Termcode.string_of_checksum a) "None" pn.proofn_checksum)
    (Pp.print_list Pp.semi print_proof_attempt)
422
      (Hprover.fold (fun _key e l ->
423 424 425 426
                     let e = get_proof_attempt_node s e in
                     e :: l)
        pn.proofn_attempts [])
      (Pp.print_list Pp.semi (print_trans_node s)) pn.proofn_transformations
427 428 429

and print_trans_node s fmt id =
  let tn = get_transfNode s id in
430
  let args = get_transf_args s id in
431 432 433
  let name = tn.transf_name in
  let l = tn.transf_subtasks in
  let parent = (get_proofNode s tn.transf_parent).proofn_name.id_string in
Sylvain Dailler's avatar
Sylvain Dailler committed
434 435
  fprintf fmt "@[<hv 1> Trans %s;@ args %a;@ parent %s;@ [%a]@]"
    name (Pp.print_list Pp.colon pp_print_string) args parent
436 437 438 439 440 441 442 443 444 445 446 447
    (Pp.print_list Pp.semi (print_proof_node s)) l

let print_theory s fmt th : unit =
  fprintf fmt "@[<hv 2> Theory %s;@ [%a]@]" th.theory_name.Ident.id_string
    (Pp.print_list Pp.semi (fun fmt a -> print_proof_node s fmt a)) th.theory_goals

let print_file s fmt (file, thl) =
  fprintf fmt "@[<hv 2> File %s;@ [%a]@]" file.file_name
    (Pp.print_list Pp.semi (print_theory s)) thl

let print_s s fmt =
  fprintf fmt "@[%a@]" (Pp.print_list Pp.semi (print_file s))
Clément Fumex's avatar
Clément Fumex committed
448

449
let _print_session fmt s =
450
  let l = Hstr.fold (fun _ f acc -> (f,f.file_theories) :: acc) (get_files s) [] in
MARCHE Claude's avatar
MARCHE Claude committed
451
  fprintf fmt "%a@." (print_s s) l;;
Clément Fumex's avatar
Clément Fumex committed
452

453

Clément Fumex's avatar
Clément Fumex committed
454
let empty_session ?shape_version dir =
Clément Fumex's avatar
Clément Fumex committed
455 456 457 458
  let shape_version = match shape_version with
    | Some v -> v
    | None -> Termcode.current_shape_version
  in
459 460 461
  { proofAttempt_table = Hint.create 97;
    next_proofAttemptID = 0;
    proofNode_table = Hint.create 97;
Clément Fumex's avatar
Clément Fumex committed
462 463 464
    next_proofNodeID = 0;
    trans_table = Hint.create 97;
    next_transID = 0;
Clément Fumex's avatar
Clément Fumex committed
465
    session_dir = dir;
Clément Fumex's avatar
Clément Fumex committed
466 467 468
    session_files = Hstr.create 3;
    session_shape_version = shape_version;
    session_prover_ids = Hprover.create 7;
469 470 471 472
    file_state = Hstr.create 3;
    th_state = Ident.Hid.create 7;
    tn_state = Htn.create 42;
    pn_state = Hpn.create 42;
Clément Fumex's avatar
Clément Fumex committed
473 474
  }

475 476 477
(**************************************************)
(* proof node/attempt/transformation manipulation *)
(**************************************************)
MARCHE Claude's avatar
MARCHE Claude committed
478

479 480
exception AlreadyExist

481 482
let add_proof_attempt session prover limit state obsolete edit parentID =
  let pn = get_proofNode session parentID in
483 484 485 486 487 488 489 490 491 492 493 494 495 496
  try
    let _ = Hprover.find pn.proofn_attempts prover in
    raise AlreadyExist
  with Not_found ->
    let id = gen_proofAttemptID session in
    let pa = { parent = parentID;
               prover = prover;
               limit = limit;
               proof_state = state;
               proof_obsolete = obsolete;
               proof_script = edit } in
    Hprover.add pn.proofn_attempts prover id;
    Hint.replace session.proofAttempt_table id pa;
    id
497

Sylvain Dailler's avatar
Sylvain Dailler committed
498
let graft_proof_attempt ?file (s : session) (id : proofNodeID) (pr : Whyconf.prover)
499
    ~limit =
500 501 502 503
  let pn = get_proofNode s id in
  try
    let id = Hprover.find pn.proofn_attempts pr in
    let pa = Hint.find s.proofAttempt_table id in
Sylvain Dailler's avatar
Sylvain Dailler committed
504 505
    let pa = { pa with limit = limit;
               proof_state = None;
506
               proof_obsolete = false} in
507 508 509
    Hint.replace s.proofAttempt_table id pa;
    id
  with Not_found ->
Sylvain Dailler's avatar
Sylvain Dailler committed
510
    add_proof_attempt s pr limit None false file id
Clément Fumex's avatar
Clément Fumex committed
511

Clément Fumex's avatar
Clément Fumex committed
512

Clément Fumex's avatar
Clément Fumex committed
513
(* [mk_proof_node s n t p id] register in the session [s] a proof node
Clément Fumex's avatar
Clément Fumex committed
514
   of proofNodeID [id] of parent [p] of task [t] *)
MARCHE Claude's avatar
MARCHE Claude committed
515
let mk_proof_node ~version ~expl (s : session) (n : Ident.ident) (t : Task.task)
Clément Fumex's avatar
Clément Fumex committed
516
    (parent : proof_parent) (node_id : proofNodeID) =
517
  let tables = Args_wrapper.build_name_tables t in
Clément Fumex's avatar
Clément Fumex committed
518
  let sum = Some (Termcode.task_checksum ~version t) in
MARCHE Claude's avatar
MARCHE Claude committed
519
  let shape = Termcode.t_shape_task ~version ~expl t in
Clément Fumex's avatar
Clément Fumex committed
520
  let pn = { proofn_name = n;
MARCHE Claude's avatar
MARCHE Claude committed
521
             proofn_expl = expl;
Clément Fumex's avatar
Clément Fumex committed
522
             proofn_task = t;
523
             proofn_table = Some tables;
Clément Fumex's avatar
Clément Fumex committed
524
             proofn_parent = parent;
525
             proofn_checksum = sum;
Clément Fumex's avatar
Clément Fumex committed
526
             proofn_shape = shape;
Clément Fumex's avatar
Clément Fumex committed
527
             proofn_attempts = Hprover.create 7;
Clément Fumex's avatar
Clément Fumex committed
528
             proofn_transformations = [] } in
Clément Fumex's avatar
Clément Fumex committed
529
  Hint.add s.proofNode_table node_id pn
Clément Fumex's avatar
Clément Fumex committed
530

Clément Fumex's avatar
Clément Fumex committed
531
let mk_proof_node_no_task (s : session) (n : Ident.ident)
532
    (parent : proof_parent) (node_id : proofNodeID) sum shape proved =
533
  let pn = { proofn_name = n;
MARCHE Claude's avatar
MARCHE Claude committed
534
             proofn_expl = "";
535
             proofn_task = None;
536
             proofn_table = None;
537 538
             proofn_parent = parent;
             proofn_checksum = sum;
Clément Fumex's avatar
Clément Fumex committed
539
             proofn_shape = shape;
540
             proofn_attempts = Hprover.create 7;
Clément Fumex's avatar
Clément Fumex committed
541
             proofn_transformations = [] } in
542 543
  Hint.add s.proofNode_table node_id pn;
  Hint.add s.pn_state node_id proved
Clément Fumex's avatar
Clément Fumex committed
544

Sylvain Dailler's avatar
Sylvain Dailler committed
545 546 547 548 549 550 551 552 553 554 555 556 557 558
(* Detach a new proof to a proof_parent *)
let graft_detached_proof_on_parent s (pn: proofNodeID) (parent: proof_parent) =
  match parent with
  | Theory th ->
      th.theory_detached_goals <- th.theory_detached_goals @ [pn]
  | Trans tr_id ->
      let tr = get_transfNode s tr_id in
      tr.transf_detached_subtasks <- tr.transf_detached_subtasks @ [pn]

(* Intended as a feature to save a proof (also for testing detached stuff) *)
let copy_proof_node_as_detached (s: session) (pn_id: proofNodeID) =
  let pn = get_proofNode s pn_id in
  let new_pn_id = gen_proofNodeID s in
  let parent = pn.proofn_parent in
Sylvain Dailler's avatar
Sylvain Dailler committed
559 560 561
  let new_goal = Ident.id_register (Ident.id_clone pn.proofn_name) in
  let checksum = pn.proofn_checksum in
  let shape = pn.proofn_shape in
562
  let _: unit = mk_proof_node_no_task s new_goal parent new_pn_id checksum shape false in
Sylvain Dailler's avatar
Sylvain Dailler committed
563 564 565
  graft_detached_proof_on_parent s new_pn_id parent;
  new_pn_id

566
let _mk_proof_node_task (s : session) (t : Task.task)
Clément Fumex's avatar
Clément Fumex committed
567 568
    (parent : proof_parent) (node_id : proofNodeID) =
  let name,_,_ = Termcode.goal_expl_task ~root:false t in
Clément Fumex's avatar
Clément Fumex committed
569
  mk_proof_node ~version:s.session_shape_version s name t parent node_id
Clément Fumex's avatar
Clément Fumex committed
570

Sylvain Dailler's avatar
Sylvain Dailler committed
571 572
let mk_transf_proof_node (s : session) (parent_name : string)
    (tid : transID) (index : int) (t : Task.task) =
Clément Fumex's avatar
Clément Fumex committed
573
  let id = gen_proofNodeID s in
MARCHE Claude's avatar
MARCHE Claude committed
574
  let gid,expl,_ = Termcode.goal_expl_task ~root:false t in
Clément Fumex's avatar
Clément Fumex committed
575 576
  let goal_name = parent_name ^ "." ^ string_of_int index in
  let goal_name = Ident.id_register (Ident.id_derive goal_name gid) in
MARCHE Claude's avatar
MARCHE Claude committed
577 578
  mk_proof_node ~version:s.session_shape_version ~expl
                s goal_name t (Trans tid) id;
Clément Fumex's avatar
Clément Fumex committed
579 580
  id

Clément Fumex's avatar
Clément Fumex committed
581
let mk_transf_node (s : session) (id : proofNodeID) (node_id : transID)
582
    (name : string) (args : string list) ~(proved:bool) (pnl : proofNodeID list) =
Clément Fumex's avatar
Clément Fumex committed
583 584 585 586
  let pn = get_proofNode s id in
  let tn = { transf_name = name;
             transf_args = args;
             transf_subtasks = pnl;
Clément Fumex's avatar
Clément Fumex committed
587 588
             transf_parent = id;
             transf_detached_subtasks = [] } in
Clément Fumex's avatar
Clément Fumex committed
589
  Hint.add s.trans_table node_id tn;
590
  Htn.add s.tn_state node_id proved;
Clément Fumex's avatar
Clément Fumex committed
591 592
  pn.proofn_transformations <- node_id::pn.proofn_transformations

593
exception BadCopyDetached of string
Sylvain Dailler's avatar
Sylvain Dailler committed
594 595 596 597 598 599 600 601 602

let rec copy_structure ~notification s from_any to_any : unit =
  match from_any, to_any with
  | APn from_id, APn to_id ->
    let transformations = get_transformations s from_id in
    let new_transformations =
      List.map (fun x ->
        let tr_id = gen_transID s in
        let old_tr = get_transfNode s x in
603 604
        mk_transf_node s to_id tr_id old_tr.transf_name old_tr.transf_args
                       ~proved:false [];
Sylvain Dailler's avatar
Sylvain Dailler committed
605 606 607 608 609 610
        notification ~parent:to_any (ATn tr_id);
        copy_structure ~notification s (ATn x) (ATn tr_id);
        tr_id) transformations in
    (get_proofNode s to_id).proofn_transformations <- new_transformations;
    Hprover.iter (fun _k old_pa ->
      let old_pa = get_proof_attempt_node s old_pa in
Sylvain Dailler's avatar
Sylvain Dailler committed
611 612 613 614
      let pa_id =
        add_proof_attempt s old_pa.prover old_pa.limit None true None to_id in
      notification ~parent:to_any (APa pa_id))
      (get_proofNode s from_id).proofn_attempts
Sylvain Dailler's avatar
Sylvain Dailler committed
615 616 617 618 619 620 621 622
  | ATn from_tn, ATn to_tn ->
    let sub_tasks = get_sub_tasks s from_tn in
    let new_sub_tasks =
      List.map (fun old_pn_id ->
        let old_pn = get_proofNode s old_pn_id in
        let pn_id = gen_proofNodeID s in
        let new_id = Ident.id_register (Ident.id_clone old_pn.proofn_name) in
        mk_proof_node_no_task s new_id (Trans to_tn)
623
          pn_id old_pn.proofn_checksum old_pn.proofn_shape false;
Sylvain Dailler's avatar
Sylvain Dailler committed
624 625 626 627 628
        notification ~parent:to_any (APn pn_id);
        copy_structure ~notification s (APn old_pn_id) (APn pn_id);
        pn_id) sub_tasks in
    let tr = get_transfNode s to_tn in
    tr.transf_detached_subtasks <- new_sub_tasks
629
  | _ -> raise (BadCopyDetached "copy_structure")
Sylvain Dailler's avatar
Sylvain Dailler committed
630

Clément Fumex's avatar
Clément Fumex committed
631
let graft_transf  (s : session) (id : proofNodeID) (name : string)
632
    (args : string list) (tl : Task.task list) =
Clément Fumex's avatar
Clément Fumex committed
633
  let tid = gen_transID s in
Clément Fumex's avatar
Clément Fumex committed
634 635
  let parent_name = (get_proofNode s id).proofn_name.Ident.id_string in
  let sub_tasks = List.mapi (mk_transf_proof_node s parent_name tid) tl in
636 637
  let proved = sub_tasks = [] in
  mk_transf_node s id tid name args ~proved sub_tasks;
Clément Fumex's avatar
Clément Fumex committed
638
  tid
Clément Fumex's avatar
Clément Fumex committed
639

Clément Fumex's avatar
Clément Fumex committed
640

641
let update_proof_attempt ?(obsolete=false) s id pr st =
Sylvain Dailler's avatar
Sylvain Dailler committed
642 643 644 645 646
  try
    let n = get_proofNode s id in
    let pa = Hprover.find n.proofn_attempts pr in
    let pa = get_proof_attempt_node s pa in
    pa.proof_state <- Some st;
647
    pa.proof_obsolete <- obsolete
Sylvain Dailler's avatar
Sylvain Dailler committed
648
  with
649
  | BadID when not (Debug.test_flag debug_stack_trace) -> assert false
Clément Fumex's avatar
Clément Fumex committed
650

651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827


(* proved status *)


let tn_proved s tid = Htn.find_def s.tn_state false tid
let pn_proved s pid = Hpn.find_def s.pn_state false pid
let th_proved s th  =
  try Hid.find s.th_state th.theory_name
  with Not_found ->
    let b = theory_goals th = [] in
    Hid.add s.th_state th.theory_name b;
    b

let file_proved s f =
  try Hstr.find s.file_state f.file_name
  with Not_found ->
    let b = f.file_theories = [] in
    Hstr.add s.file_state f.file_name b;
    b

let any_proved s any : bool =
  match any with
  | AFile file -> file_proved s file
  | ATh th -> th_proved s th
  | ATn tn -> tn_proved s tn
  | APn pn -> pn_proved s pn
  | APa pa ->
      begin
        let pa = get_proof_attempt_node s pa in
        match pa.proof_state with
        | None -> false
        | Some pa ->
          begin
            match pa.Call_provers.pr_answer with
            | Call_provers.Valid -> true
            | _ -> false
          end
      end




(* status update *)


type notifier = any -> unit

let pa_ok pa =
  not pa.proof_obsolete &&
    match pa.proof_state
    with
    | Some { Call_provers.pr_answer = Call_provers.Valid} -> true
    | _ -> false

(* [update_goal_node c id] update the proof status of node id
   update is propagated to parents when required. *)

let update_file_node notification s f =
  let ths = f.file_theories in
  let proved = List.for_all (th_proved s) ths in
  if proved <> file_proved s f then
    begin
      Stdlib.Hstr.replace s.file_state f.file_name proved;
      notification (AFile f);
    end

let update_theory_node notification s th =
  let goals = theory_goals th in
  let proved = List.for_all (pn_proved s) goals in
  if proved <> th_proved s th then
    begin
      Hid.replace s.th_state (theory_name th) proved;
      notification (ATh th);
      try let p = theory_parent s th in
          update_file_node notification s p
      with Not_found -> Format.eprintf "Session_itp.update_theory_node: parent missing@."; exit 1
    end

let rec update_goal_node notification s id =
  let tr_list = get_transformations s id in
  let pa_list = get_proof_attempts s id in
  let proved = List.exists (tn_proved s) tr_list || List.exists pa_ok pa_list in
  if proved <> pn_proved s id then
    begin
      Hpn.replace s.pn_state id proved;
      notification (APn id);
      match get_proof_parent s id with
      | Trans trans_id -> update_trans_node notification s trans_id
      | Theory th -> update_theory_node notification s th
      | exception Not_found ->
                  Format.eprintf "Session_itp.update_goal_node: parent missing@."; exit 1
    end

and update_trans_node notification s trid =
  let proof_list = get_sub_tasks s trid in
  let proved = List.for_all (pn_proved s) proof_list in
  if proved <> tn_proved s trid then
    begin
      Htn.replace s.tn_state trid proved;
      notification (ATn trid);
      update_goal_node notification s (get_trans_parent s trid)
    end


let update_any_node s notification a =
  match a with
  | APn id -> update_goal_node notification s id
  | ATn id -> update_trans_node notification s id
  | APa _ -> assert false
  | AFile f -> update_file_node notification s f
  | ATh th -> update_theory_node notification s th


(* Remove elements of the session tree *)

let remove_transformation (s : session) (id : transID) =
  let nt = get_transfNode s id in
  Hint.remove s.trans_table id;
  let pn = get_proofNode s nt.transf_parent in
  let trans_up = List.filter (fun tid -> tid != id) pn.proofn_transformations in
  pn.proofn_transformations <- trans_up

let remove_proof_attempt (s : session) (id : proofNodeID)
    (prover : Whyconf.prover) =
  let pn = get_proofNode s id in
  let pa = Hprover.find pn.proofn_attempts prover in
  Hprover.remove pn.proofn_attempts prover;
  Hint.remove s.proofAttempt_table pa

let remove_proof_attempt_pa s (id: proofAttemptID) =
  let pa = get_proof_attempt_node s id in
  let pn = pa.parent in
  let prover = pa.prover in
  remove_proof_attempt s pn prover

let mark_obsolete s (id: proofAttemptID) =
  let pa = get_proof_attempt_node s id in
  pa.proof_obsolete <- true


exception RemoveError

(* Cannot remove a proof_attempt that was scheduled but did not finish yet.
   It can be interrupted though. *)
let removable_proof_attempt s pa =
  let pa = get_proof_attempt_node s pa in
  match pa.proof_state with
  | None -> false
  | Some _pr -> true

let any_removable s any =
  match any with
  | APa pa -> removable_proof_attempt s pa
  | _ -> true

(* Check whether the subtree [n] contains an unremovable proof_attempt
   (ie: scheduled or running) *)
let check_removable s (n: any) =
  fold_all_any s (fun acc any -> any_removable s any && acc) true n

let remove_subtree ~(notification:notifier) ~(removed:notifier) s (n: any) =
  let remove (n: any) =
    match n with
    | ATn tn -> remove_transformation s tn
    | APa pa -> remove_proof_attempt_pa s pa
    | AFile f -> Hstr.remove s.session_files f.file_name
    | APn pn -> Hint.remove s.proofNode_table pn
    | ATh _th -> (* Not in any table *)  ()
  in
  (* If a subtree cannot be removed then fail *)
  if not (check_removable s n) then raise RemoveError;
  match n with
  | (APn _ | ATh _) when not (is_detached s n) ->
               raise RemoveError
  | _ ->
     let p = get_any_parent s n in
Sylvain Dailler's avatar
Sylvain Dailler committed
828
     fold_all_any s (fun _ x -> remove x; removed x) () n;
829 830
     Opt.iter (update_any_node s notification) p

Clément Fumex's avatar
Clément Fumex committed
831 832 833 834
(****************************)
(*     session opening      *)
(****************************)

Clément Fumex's avatar
Clément Fumex committed
835 836
let db_filename = "why3session.xml"
let shape_filename = "why3shapes"
Clément Fumex's avatar
Clément Fumex committed
837
let compressed_shape_filename = "why3shapes.gz"
Clément Fumex's avatar
Clément Fumex committed
838 839
let session_dir_for_save = ref "."

Clément Fumex's avatar
Clément Fumex committed
840 841 842 843 844 845
exception LoadError of Xml.element * string
exception SessionFileError of string

let bool_attribute field r def =
  try
    match List.assoc field r.Xml.attributes with
Clément Fumex's avatar
Clément Fumex committed
846 847 848
    | "true" -> true
    | "false" -> false
    | _ -> assert false
Clément Fumex's avatar
Clément Fumex committed
849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875
  with Not_found -> def

let int_attribute_def field r def =
  try
    int_of_string (List.assoc field r.Xml.attributes)
  with Not_found | Invalid_argument _ -> def

let string_attribute_def field r def=
  try
    List.assoc field r.Xml.attributes
  with Not_found -> def

let string_attribute_opt field r =
  try
    Some (List.assoc field r.Xml.attributes)
  with Not_found -> None

let string_attribute field r =
  try
    List.assoc field r.Xml.attributes
  with Not_found ->
    eprintf "[Error] missing required attribute '%s' from element '%s'@."
      field r.Xml.name;
    assert false

let load_result r =
  match r.Xml.name with
Clément Fumex's avatar
Clément Fumex committed
876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915
  | "result" ->
    let status = string_attribute "status" r in
    let answer =
      match status with
      | "valid" -> Call_provers.Valid
      | "invalid" -> Call_provers.Invalid
      | "unknown" -> Call_provers.Unknown ("", None)
      | "timeout" -> Call_provers.Timeout
      | "outofmemory" -> Call_provers.OutOfMemory
      | "failure" -> Call_provers.Failure ""
      | "highfailure" -> Call_provers.HighFailure
      | "steplimitexceeded" -> Call_provers.StepLimitExceeded
      | "stepslimitexceeded" -> Call_provers.StepLimitExceeded
      | s ->
        Warning.emit
          "[Warning] Session.load_result: unexpected status '%s'@." s;
        Call_provers.HighFailure
    in
    let time =
      try float_of_string (List.assoc "time" r.Xml.attributes)
      with Not_found -> 0.0
    in
    let steps =
      try int_of_string (List.assoc "steps" r.Xml.attributes)
      with Not_found -> -1
    in
    Some {
      Call_provers.pr_answer = answer;
      Call_provers.pr_time = time;
      Call_provers.pr_output = "";
      Call_provers.pr_status = Unix.WEXITED 0;
      Call_provers.pr_steps = steps;
      Call_provers.pr_model = Model_parser.default_model;
    }
  | "undone" -> None
  | "unedited" -> None
  | s ->
    Warning.emit "[Warning] Session.load_result: unexpected element '%s'@."
      s;
    None
Clément Fumex's avatar
Clément Fumex committed
916 917 918 919 920 921 922 923

let load_option attr g =
  try Some (List.assoc attr g.Xml.attributes)
  with Not_found -> None

let load_ident elt =
  let name = string_attribute "name" elt in
  let label = List.fold_left
Clément Fumex's avatar
Clément Fumex committed
924 925 926 927 928 929 930
      (fun acc label ->
         match label with
         | {Xml.name = "label"} ->
           let lab = string_attribute "name" label in
           Ident.Slab.add (Ident.create_label lab) acc
         | _ -> acc
      ) Ident.Slab.empty elt.Xml.elements in
Clément Fumex's avatar
Clément Fumex committed
931 932 933 934 935 936 937 938 939 940 941 942 943
  let preid =
    try
      let load_exn attr g = List.assoc attr g.Xml.attributes in
      let file = load_exn "locfile" elt in
      let lnum =  int_of_string (load_exn "loclnum" elt) in
      let cnumb = int_of_string (load_exn "loccnumb" elt) in
      let cnume = int_of_string (load_exn "loccnume" elt) in
      let pos = Loc.user_position file lnum cnumb cnume in
      Ident.id_user ~label name pos
    with Not_found | Invalid_argument _ ->
      Ident.id_fresh ~label name in
  Ident.id_register preid

Clément Fumex's avatar
Clément Fumex committed
944 945 946 947
(* [load_goal s op p g id] loads the goal of parent [p] from the xml
   [g] of nodeID [id] into the session [s] *)
let rec load_goal session old_provers parent g id =
  match g.Xml.name with
Clément Fumex's avatar
Clément Fumex committed
948 949
  | "goal" ->
    let gname = load_ident g in
950 951 952
    (* even if sum and shape are not in the XML file but in the shape
  file, these attributes are there thanks to ~fixattr on
  Xml.from_file *)
953 954
    let csum = string_attribute_opt "sum" g in
    let sum = Opt.map Termcode.checksum_of_string csum in
Clément Fumex's avatar
Clément Fumex committed
955 956 957 958
    let shape =
      try Termcode.shape_of_string (List.assoc "shape" g.Xml.attributes)
      with Not_found -> Termcode.shape_of_string ""
    in
959 960
    let proved = bool_attribute "proved" g false in
    mk_proof_node_no_task session gname parent id sum shape proved;
Clément Fumex's avatar
Clément Fumex committed
961 962 963 964 965
    List.iter (load_proof_or_transf session old_provers id) g.Xml.elements;
  | "label" -> ()
  | s ->
    Warning.emit "[Warning] Session.load_goal: unexpected element '%s'@." s

Clément Fumex's avatar
Clément Fumex committed
966
(* [load_proof_or_transf s op pid a] load either a proof attempt or a
Clément Fumex's avatar
Clément Fumex committed
967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989
   transformation of parent id [pid] from the xml [a] into the session
   [s] *)
and load_proof_or_transf session old_provers pid a =
  match a.Xml.name with
    | "proof" ->
      begin
        let prover = string_attribute "prover" a in
        try
          let prover = int_of_string prover in
          let (p,timelimit,steplimit,memlimit) = Mint.find prover old_provers in
          let res = match a.Xml.elements with
            | [r] -> load_result r
            | [] -> None
            | _ ->
              Warning.emit "[Error] Too many result elements@.";
              raise (LoadError (a,"too many result elements"))
          in
          let edit = load_option "edited" a in
          let edit = match edit with None | Some "" -> None | _ -> edit in
          let obsolete = bool_attribute "obsolete" a false in
          let timelimit = int_attribute_def "timelimit" a timelimit in
	  let steplimit = int_attribute_def "steplimit" a steplimit in
          let memlimit = int_attribute_def "memlimit" a memlimit in
Clément Fumex's avatar
Clément Fumex committed
990 991 992 993
          let limit = { Call_provers.limit_time  = timelimit;
                        Call_provers.limit_mem   = memlimit;
                        Call_provers.limit_steps = steplimit; }
          in
994
          ignore(add_proof_attempt session p limit res obsolete edit pid)
Clément Fumex's avatar
Clément Fumex committed
995 996 997 998 999
        with Failure _ | Not_found ->
          Warning.emit "[Error] prover id not listed in header '%s'@." prover;
          raise (LoadError (a,"prover not listing in header"))
      end
    | "transf" ->
1000 1001 1002 1003 1004 1005 1006 1007
      let trname = string_attribute "name" a in
      let rec get_args id =
        match string_attribute_opt ("arg"^(string_of_int id)) a with
        | Some arg -> arg :: (get_args (id+1))
        | None -> []
      in
      let args = get_args 1 in
      let tid = gen_transID session in
1008
      let proved = bool_attribute "proved" a false in
1009 1010 1011
      let subtasks_ids =
        List.rev (List.fold_left
                    (fun goals th ->
1012 1013 1014
                       match th.Xml.name with
                       | "goal" -> (gen_proofNodeID session) :: goals
                       | _ -> goals) [] a.Xml.elements)
1015
      in
1016
      mk_transf_node session pid tid trname args ~proved subtasks_ids;
1017 1018 1019
      List.iter2
        (load_goal session old_provers (Trans tid))
        a.Xml.elements subtasks_ids;
Clément Fumex's avatar
Clément Fumex committed
1020 1021
    | "metas" -> ()
    | "label" -> ()
Clément Fumex's avatar
Clément Fumex committed
1022
    | s ->
1023 1024 1025
      Warning.emit
        "[Warning] Session.load_proof_or_transf: unexpected element '%s'@."
        s
Clément Fumex's avatar
Clément Fumex committed
1026

1027
let load_theory session parent_name old_provers acc th =
Clément Fumex's avatar
Clément Fumex committed
1028 1029 1030 1031 1032
  match th.Xml.name with
  | "theory" ->
    let thname = load_ident th in
    let csum = string_attribute_opt "sum" th in
    let checksum = Opt.map Termcode.checksum_of_string csum in
Clément Fumex's avatar
Clément Fumex committed
1033
    let goals = List.rev (List.fold_left (fun goals th -> match th.Xml.name with
Clément Fumex's avatar
Clément Fumex committed
1034
        | "goal" -> (gen_proofNodeID session) :: goals
Clément Fumex's avatar
Clément Fumex committed
1035
        | _ -> goals) [] th.Xml.elements) in
Clément Fumex's avatar
Clément Fumex committed
1036 1037
    let mth = { theory_name = thname;
                theory_checksum = checksum;
Clément Fumex's avatar
Clément Fumex committed
1038
                theory_goals = goals;
1039
                theory_parent_name = parent_name;
Clément Fumex's avatar
Clément Fumex committed
1040
                theory_detached_goals = [] } in
Clément Fumex's avatar
Clément Fumex committed
1041 1042 1043 1044 1045 1046 1047 1048 1049
    List.iter2
      (load_goal session old_provers (Theory mth))
      th.Xml.elements goals;
    mth::acc
  | s ->
    Warning.emit "[Warning] Session.load_theory: unexpected element '%s'@."
      s;
    acc

1050
let load_file session old_provers f =
Clément Fumex's avatar
Clément Fumex committed
1051 1052 1053 1054 1055 1056
  match f.Xml.name with
  | "file" ->
    let fn = string_attribute "name" f in
    let fmt = load_option "format" f in
    let ft = List.rev
        (List.fold_left
1057
           (load_theory session fn old_provers) [] f.Xml.elements) in
Clément Fumex's avatar
Clément Fumex committed
1058 1059
    let mf = { file_name = fn;
               file_format = fmt;
Clément Fumex's avatar
Clément Fumex committed
1060 1061
               file_theories = ft;
               file_detached_theories = [] } in
Clément Fumex's avatar
Clément Fumex committed
1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081
    Hstr.add session.session_files fn mf;
    old_provers
  | "prover" ->
    (* The id is just for the session file *)
    let id = string_attribute "id" f in
    begin
      try
        let id = int_of_string id in
        let name = string_attribute "name" f in
        let version = string_attribute "version" f in
        let altern = string_attribute_def "alternative" f "" in
        let timelimit = int_attribute_def "timelimit" f 5 in
        let steplimit = int_attribute_def "steplimit" f 1 in
        let memlimit = int_attribute_def "memlimit" f 1000 in
        let p = {Whyconf.prover_name = name;
                 prover_version = version;
                 prover_altern = altern} in
        Mint.add id (p,timelimit,steplimit,memlimit) old_provers
      with Failure _ ->
        Warning.emit "[Warning] Session.load_file: unexpected non-numeric prover id '%s'@." id;
Clément Fumex's avatar
Clément Fumex committed
1082
        old_provers
Clément Fumex's avatar
Clément Fumex committed
1083 1084 1085 1086
    end
  | s ->
    Warning.emit "[Warning] Session.load_file: unexpected element '%s'@." s;
    old_provers
Clément Fumex's avatar
Clément Fumex committed
1087 1088 1089

let build_session (s : session) xml =
  match xml.Xml.name with
Clément Fumex's avatar
Clément Fumex committed
1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106
  | "why3session" ->
    let shape_version = int_attribute_def "shape_version" xml 1 in
    s.session_shape_version <- shape_version;
    Debug.dprintf debug "[Info] load_session: shape version is %d@\n" shape_version;
    (* just to keep the old_provers somewhere *)
    let old_provers =
      List.fold_left (load_file s) Mint.empty xml.Xml.elements
    in
    Mint.iter
      (fun id (p,_,_,_) ->
         Debug.dprintf debug "prover %d: %a@." id Whyconf.print_prover p;
         Hprover.replace s.session_prover_ids p id)
      old_provers;
    Debug.dprintf debug "[Info] load_session: done@\n"
  | s ->
    Warning.emit "[Warning] Session.load_session: unexpected element '%s'@."
      s
Clément Fumex's avatar
Clément Fumex committed
1107

Clément Fumex's avatar
Clément Fumex committed
1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210
exception ShapesFileError of string

module ReadShapes (C:Compress.S) = struct

let shape = Buffer.create 97
let sum = Strings.create 32

let read_sum_and_shape ch =
  let nsum = C.input ch sum 0 32 in
  if nsum = 0 then raise End_of_file;
  if nsum <> 32 then
    begin
      try
        C.really_input ch sum nsum (32-nsum)
      with End_of_file ->
        raise
          (ShapesFileError
             ("shapes files corrupted (checksum '" ^
                 (String.sub sum 0 nsum) ^
                 "' too short), ignored"))
    end;
  if try C.input_char ch <> ' ' with End_of_file -> true then
      raise (ShapesFileError "shapes files corrupted (space missing), ignored");
    Buffer.clear shape;
    try
      while true do
        let c = C.input_char ch in
        if c = '\n' then raise Exit;
        Buffer.add_char shape c
      done;
      assert false
    with
      | End_of_file ->
        raise (ShapesFileError "shapes files corrupted (premature end of file), ignored");
      | Exit -> Strings.copy sum, Buffer.contents shape


  let use_shapes = ref true

  let fix_attributes ch name attrs =
    if name = "goal" then
      try
        let sum,shape = read_sum_and_shape ch in
        let attrs =
          try
            let old_sum = List.assoc "sum" attrs in
            if sum <> old_sum then
              begin
                Format.eprintf "old sum = %s ; new sum = %s@." old_sum sum;
                raise
                  (ShapesFileError
                     "shapes files corrupted (sums do not correspond)")
              end;
            attrs
          with Not_found -> ("sum", sum) :: attrs
        in
        ("shape",shape) :: attrs
      with _ -> use_shapes := false; attrs
    else attrs

let read_xml_and_shapes xml_fn compressed_fn =
  use_shapes := true;
  try
    let ch = C.open_in compressed_fn in
    let xml = Xml.from_file ~fixattrs:(fix_attributes ch) xml_fn in
    C.close_in ch;
    xml, !use_shapes
  with Sys_error msg ->
    raise (ShapesFileError ("cannot open shapes file for reading: " ^ msg))
end

module ReadShapesNoCompress = ReadShapes(Compress.Compress_none)
module ReadShapesCompress = ReadShapes(Compress.Compress_z)

let read_file_session_and_shapes dir xml_filename =
  try
  let compressed_shape_filename =
    Filename.concat dir compressed_shape_filename
  in
  if Sys.file_exists compressed_shape_filename then
    if Compress.compression_supported then
     ReadShapesCompress.read_xml_and_shapes
       xml_filename compressed_shape_filename
    else
      begin
        Warning.emit "[Warning] could not read goal shapes because \
                                Why3 was not compiled with compress support@.";
        Xml.from_file xml_filename, false
      end
  else
    let shape_filename = Filename.concat dir shape_filename in
    if Sys.file_exists shape_filename then
      ReadShapesNoCompress.read_xml_and_shapes xml_filename shape_filename
    else
      begin
        Warning.emit "[Warning] could not find goal shapes file@.";
        Xml.from_file xml_filename, false
      end
with e ->
  Warning.emit "[Warning] failed to read goal shapes: %s@."
    (Printexc.to_string e);
  Xml.from_file xml_filename, false

Clément Fumex's avatar
Clément Fumex committed
1211 1212 1213
let load_session (dir : string) =
  let session = empty_session dir in
  let file = Filename.concat dir db_filename in
Clément Fumex's avatar
Clément Fumex committed
1214 1215 1216
  let use_shapes =
    (* If the xml is present we read it, otherwise we consider it empty *)
    if Sys.file_exists file then
Clément Fumex's avatar
Clément Fumex committed
1217
      try
MARCHE Claude's avatar
MARCHE Claude committed
1218
(*
Clément Fumex's avatar
Clément Fumex committed
1219
        Termcode.reset_dict ();
MARCHE Claude's avatar
MARCHE Claude committed
1220
*)
Clément Fumex's avatar