parser.mly 35.9 KB
Newer Older
1 2 3
/********************************************************************/
/*                                                                  */
/*  The Why3 Verification Platform   /   The Why3 Development Team  */
4
/*  Copyright 2010-2013   --   INRIA - CNRS - Paris-Sud University  */
5 6 7 8 9 10
/*                                                                  */
/*  This software is distributed under the terms of the GNU Lesser  */
/*  General Public License version 2.1, with the special exception  */
/*  on linking described in file LICENSE.                           */
/*                                                                  */
/********************************************************************/
Jean-Christophe Filliâtre's avatar
Jean-Christophe Filliâtre committed
11 12

%{
13
module Incremental = struct
14 15 16 17 18 19 20
  let stack = Stack.create ()
  let open_file inc = Stack.push inc stack
  let close_file () = ignore (Stack.pop stack)
  let open_theory id = (Stack.top stack).Ptree.open_theory id
  let close_theory () = (Stack.top stack).Ptree.close_theory ()
  let open_module id = (Stack.top stack).Ptree.open_module id
  let close_module () = (Stack.top stack).Ptree.close_module ()
21 22
  let open_namespace n = (Stack.top stack).Ptree.open_namespace n
  let close_namespace l b = (Stack.top stack).Ptree.close_namespace l b
23 24 25
  let new_decl loc d = (Stack.top stack).Ptree.new_decl loc d
  let new_pdecl loc d = (Stack.top stack).Ptree.new_pdecl loc d
  let use_clone loc use = (Stack.top stack).Ptree.use_clone loc use
26
end
27

Jean-Christophe Filliâtre's avatar
Jean-Christophe Filliâtre committed
28 29 30
  open Ptree

  let loc () = (symbol_start_pos (), symbol_end_pos ())
31 32
  let floc () = Loc.extract (loc ())

Jean-Christophe Filliâtre's avatar
Jean-Christophe Filliâtre committed
33
  let loc_i i = (rhs_start_pos i, rhs_end_pos i)
34
  let floc_i i = Loc.extract (loc_i i)
35
(* dead code
Jean-Christophe Filliâtre's avatar
Jean-Christophe Filliâtre committed
36
  let loc_ij i j = (rhs_start_pos i, rhs_end_pos j)
37
  let floc_ij i j = Loc.extract (loc_ij i j)
38
*)
Jean-Christophe Filliâtre's avatar
Jean-Christophe Filliâtre committed
39

40 41 42 43 44 45 46 47 48 49 50
  let pty_of_id i = PPTtyapp (Qident i, [])

  let params_of_binders bl = List.map (function
    | l, None, _, None -> Loc.errorm ~loc:l "cannot determine the type"
    | l, Some i, gh, None -> l, None, gh, pty_of_id i
    | l, i, gh, Some t -> l, i, gh, t) bl

  let quvars_of_lidents ty ll = List.map (function
    | l, None -> Loc.errorm ~loc:l "anonymous binders are not allowed here"
    | _, Some i -> i, ty) ll

Jean-Christophe Filliâtre's avatar
Jean-Christophe Filliâtre committed
51
  let mk_ppl loc d = { pp_loc = loc; pp_desc = d }
52
  let mk_pp d = mk_ppl (floc ()) d
53
(* dead code
54
  let mk_pp_i i d = mk_ppl (floc_i i) d
55
*)
56
  let mk_pat p = { pat_loc = floc (); pat_desc = p }
Andrei Paskevich's avatar
Andrei Paskevich committed
57

58
  let infix_ppl loc a i b = mk_ppl loc (PPbinop (a, i, b))
59
  let infix_pp a i b = infix_ppl (floc ()) a i b
Jean-Christophe Filliâtre's avatar
Jean-Christophe Filliâtre committed
60

61
  let prefix_ppl loc p a = mk_ppl loc (PPunop (p, a))
62
  let prefix_pp p a = prefix_ppl (floc ()) p a
Jean-Christophe Filliâtre's avatar
Jean-Christophe Filliâtre committed
63

64
  let infix  s = "infix "  ^ s
65
  let prefix s = "prefix " ^ s
66
  let mixfix s = "mixfix " ^ s
67

68 69 70 71
  let mk_id id loc = { id = id; id_lab = []; id_loc = loc }

  let add_lab id l = { id with id_lab = l }

72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87
  let mk_l_prefix op e1 =
    let id = mk_id (prefix op) (floc_i 1) in
    mk_pp (PPapp (Qident id, [e1]))

  let mk_l_infix e1 op e2 =
    let id = mk_id (infix op) (floc_i 2) in
    mk_pp (PPinfix (e1, id, e2))

  let mk_l_mixfix2 op e1 e2 =
    let id = mk_id (mixfix op) (floc_i 2) in
    mk_pp (PPapp (Qident id, [e1;e2]))

  let mk_l_mixfix3 op e1 e2 e3 =
    let id = mk_id (mixfix op) (floc_i 2) in
    mk_pp (PPapp (Qident id, [e1;e2;e3]))

88 89 90
  let () = Exn_printer.register
    (fun fmt exn -> match exn with
      | Parsing.Parse_error -> Format.fprintf fmt "syntax error"
91
      | _ -> raise exn)
92

93 94
  let mk_expr d = { expr_loc = floc (); expr_desc = d }
  let mk_expr_i i d = { expr_loc = floc_i i; expr_desc = d }
95

96 97 98
  let cast_body c e = match c with
    | Some pt -> { e with expr_desc = Ecast (e, pt) }
    | None -> e
99 100 101

  let rec mk_apply f = function
    | [] ->
102
        assert false
103
    | [a] ->
104
        Eapply (f, a)
105
    | a :: l ->
106 107
        let loc = Loc.join f.expr_loc a.expr_loc in
        mk_apply { expr_loc = loc; expr_desc = Eapply (f, a) } l
108 109

  let mk_apply_id id =
110
    mk_apply { expr_desc = Eident (Qident id); expr_loc = id.id_loc }
111

112 113
  let mk_mixfix2 op e1 e2 =
    let id = mk_id (mixfix op) (floc_i 2) in
114 115
    mk_expr (mk_apply_id id [e1; e2])

116 117
  let mk_mixfix3 op e1 e2 e3 =
    let id = mk_id (mixfix op) (floc_i 2) in
118 119
    mk_expr (mk_apply_id id [e1; e2; e3])

120
  let mk_infix e1 op e2 =
121
    let id = mk_id (infix op) (floc_i 2) in
122
    mk_expr (Einfix (e1, id, e2))
123 124

  let mk_prefix op e1 =
125
    let id = mk_id (prefix op) (floc_i 1) in
126 127
    mk_expr (mk_apply_id id [e1])

128 129
  let exit_exn () = Qident (mk_id "%Exit" (floc ()))
  let id_anonymous () = mk_id "_" (floc ())
Jean-Christophe Filliatre's avatar
Jean-Christophe Filliatre committed
130
  let ty_unit () = PPTtuple []
131

132
(* dead code
133
  let id_lt_nat () = Qident (mk_id "lt_nat" (floc ()))
134
*)
135

136 137 138 139 140 141 142 143 144 145
  let variant_union v1 v2 = match v1, v2 with
    | _, [] -> v1
    | [], _ -> v2
    | _, _ -> Loc.errorm ~loc:(floc ())
        "multiple `variant' clauses are not allowed"

  let empty_spec = {
    sp_pre     = [];
    sp_post    = [];
    sp_xpost   = [];
146
    sp_reads   = [];
147 148 149
    sp_writes  = [];
    sp_variant = [];
  }
150

151 152 153 154
  let spec_union s1 s2 = {
    sp_pre     = s1.sp_pre @ s2.sp_pre;
    sp_post    = s1.sp_post @ s2.sp_post;
    sp_xpost   = s1.sp_xpost @ s2.sp_xpost;
155
    sp_reads   = s1.sp_reads @ s2.sp_reads;
156 157
    sp_writes  = s1.sp_writes @ s2.sp_writes;
    sp_variant = variant_union s1.sp_variant s2.sp_variant;
158
  }
159

160
(* dead code
161
  let add_init_mark e =
162
    let init = { id = "Init"; id_lab = []; id_loc = e.expr_loc } in
163
    { e with expr_desc = Emark (init, e) }
164
*)
165

166 167 168
  let small_integer i =
    try
      match i with
169 170 171 172
      | Number.IConstDec s -> int_of_string s
      | Number.IConstHex s -> int_of_string ("0x"^s)
      | Number.IConstOct s -> int_of_string ("0o"^s)
      | Number.IConstBin s -> int_of_string ("0b"^s)
173 174
    with Failure _ -> raise Parsing.Parse_error

175 176 177
  let qualid_last = function
    | Qident x | Qdot (_, x) -> x.id

Jean-Christophe Filliâtre's avatar
Jean-Christophe Filliâtre committed
178 179
%}

180
/* Tokens */
Jean-Christophe Filliâtre's avatar
Jean-Christophe Filliâtre committed
181

182
%token <string> LIDENT UIDENT
183
%token <Ptree.integer_constant> INTEGER
184
%token <string> OP1 OP2 OP3 OP4 OPPREF
Jean-Christophe Filliâtre's avatar
Jean-Christophe Filliâtre committed
185 186
%token <Ptree.real_constant> FLOAT
%token <string> STRING
187
%token <Loc.position> POSITION
188
%token <string> QUOTE_UIDENT QUOTE_LIDENT OPAQUE_QUOTE_LIDENT
189 190 191

/* keywords */

192
%token AS AXIOM CLONE COINDUCTIVE CONSTANT
Andrei Paskevich's avatar
Andrei Paskevich committed
193 194 195
%token ELSE END EPSILON EXISTS EXPORT FALSE FORALL FUNCTION
%token GOAL IF IMPORT IN INDUCTIVE LEMMA
%token LET MATCH META NAMESPACE NOT PROP PREDICATE
196
%token THEN THEORY TRUE TYPE USE WITH
197

198 199
/* program keywords */

200
%token ABSTRACT ABSURD ANY ASSERT ASSUME BEGIN CHECK DO DONE DOWNTO
201
%token ENSURES EXCEPTION FOR
202
%token FUN GHOST INVARIANT LOOP MODEL MODULE MUTABLE PRIVATE RAISE
203
%token RAISES READS REC REQUIRES RETURNS TO TRY VAL VARIANT WHILE WRITES
204

205 206
/* symbols */

Andrei Paskevich's avatar
Andrei Paskevich committed
207
%token AND ARROW
208
%token BAR
209
%token COLON COMMA
210
%token DOT EQUAL FUNC LAMBDA LTGT
211
%token LEFTPAR LEFTPAR_STAR_RIGHTPAR LEFTSQ
212
%token LARROW LRARROW OR PRED
213
%token RIGHTPAR RIGHTSQ
Andrei Paskevich's avatar
Andrei Paskevich committed
214
%token UNDERSCORE
215 216 217

%token EOF

218 219
/* program symbols */

220
%token AMPAMP BARBAR LEFTBRC RIGHTBRC SEMICOLON
221

Jean-Christophe Filliâtre's avatar
Jean-Christophe Filliâtre committed
222 223
/* Precedences */

224
%nonassoc prec_mark
225
%nonassoc prec_fun
226 227 228
%nonassoc IN
%right SEMICOLON
%nonassoc prec_no_else
229
%nonassoc DOT ELSE GHOST
230 231
%nonassoc prec_no_spec
%nonassoc REQUIRES ENSURES RETURNS RAISES READS WRITES VARIANT
232
%nonassoc prec_named
233
%nonassoc COLON
Jean-Christophe Filliâtre's avatar
Jean-Christophe Filliâtre committed
234

Andrei Paskevich's avatar
Andrei Paskevich committed
235
%right ARROW LRARROW
236 237
%right OR BARBAR
%right AND AMPAMP
Andrei Paskevich's avatar
Andrei Paskevich committed
238
%nonassoc NOT
239
%left EQUAL LTGT OP1
240 241
%nonassoc LARROW
%nonassoc RIGHTSQ    /* stronger than <- for e1[e2 <- e3] */
242
%left OP2
243
%left OP3
244
%left OP4
245
%nonassoc prec_prefix_op
246 247
%nonassoc LEFTSQ
%nonassoc OPPREF
248

Jean-Christophe Filliâtre's avatar
Jean-Christophe Filliâtre committed
249 250
/* Entry points */

251 252 253
%type <Ptree.incremental -> unit> open_file
%start open_file
%type <unit> logic_file
254
%start logic_file
255
%type <unit> program_file
256
%start program_file
Jean-Christophe Filliâtre's avatar
Jean-Christophe Filliâtre committed
257 258
%%

259 260
open_file:
| /* epsilon */  { Incremental.open_file }
261 262
;

263
logic_file:
264
| list0_theory EOF  { Incremental.close_file () }
265 266 267
;

/* File, theory, namespace */
268

269 270 271
list0_theory:
| /* epsilon */         { () }
| theory list0_theory   { () }
272 273
;

274
theory_head:
275
| THEORY uident labels  { Incremental.open_theory (add_lab $2 $3) }
276 277
;

278
theory:
279
| theory_head list0_decl END  { Incremental.close_theory () }
280 281
;

282
list0_decl:
283 284
| /* epsilon */        { () }
| new_decl list0_decl  { () }
285
| new_ns_th list0_decl { () }
286 287 288 289
;

new_decl:
| decl
290
   { Incremental.new_decl (floc ()) $1 }
291
| use_clone
292
   { Incremental.use_clone (floc ()) $1 }
293 294 295
;

new_ns_th:
296 297
| namespace_head list0_decl END
   { Incremental.close_namespace (floc_i 1) $1 }
298 299
;

300
namespace_head:
301 302
| NAMESPACE namespace_import uident
   { Incremental.open_namespace $3.id; $2 }
303 304 305 306 307 308 309 310 311
;

namespace_import:
| /* epsilon */  { false }
| IMPORT         { true }
;

/* Declaration */

312
decl:
313 314
| TYPE list1_type_decl
    { TypeDecl $2 }
315 316
| TYPE late_invariant
    { TypeDecl [$2] }
317 318
| CONSTANT logic_decl_constant
    { LogicDecl [$2] }
Andrei Paskevich's avatar
Andrei Paskevich committed
319 320 321
| FUNCTION list1_logic_decl_function
    { LogicDecl $2 }
| PREDICATE list1_logic_decl_predicate
322
    { LogicDecl $2 }
323 324
| inductive list1_inductive_decl
    { IndDecl ($1, $2) }
325
| AXIOM ident labels COLON lexpr
326
    { PropDecl (Kaxiom, add_lab $2 $3, $5) }
327
| LEMMA ident labels COLON lexpr
328
    { PropDecl (Klemma, add_lab $2 $3, $5) }
329
| GOAL ident labels COLON lexpr
330
    { PropDecl (Kgoal, add_lab $2 $3, $5) }
331
| META sident list1_meta_arg_sep_comma
332
    { Meta ($2, $3) }
Jean-Christophe Filliâtre's avatar
Jean-Christophe Filliâtre committed
333 334
;

335 336 337 338 339
inductive:
| INDUCTIVE   { Decl.Ind }
| COINDUCTIVE { Decl.Coind }
;

340 341
/* Use and clone */

342 343
use_clone:
| USE use
344
    { ($2, None) }
345
| CLONE use clone_subst
346
    { ($2, Some $3) }
347 348
;

349
use:
350 351 352 353 354 355
| opt_import tqualid
    { { use_theory = $2; use_import = Some ($1, qualid_last $2) } }
| opt_import tqualid AS uident
    { { use_theory = $2; use_import = Some ($1, $4.id) } }
| EXPORT tqualid
    { { use_theory = $2; use_import = None } }
356 357
;

358 359 360
opt_import:
| /* epsilon */ { false }
| IMPORT        { true  }
361 362 363 364 365 366 367 368 369 370 371 372 373
;

clone_subst:
| /* epsilon */          { [] }
| WITH list1_comma_subst { $2 }
;

list1_comma_subst:
| subst                         { [$1] }
| subst COMMA list1_comma_subst { $1 :: $3 }
;

subst:
374
| NAMESPACE ns     EQUAL ns     { CSns   (floc (), $2, $4) }
375 376
| TYPE qualid type_args EQUAL primitive_type
                                { CStsym (floc (), $2, $3, $5) }
377 378 379 380 381
| CONSTANT  qualid EQUAL qualid { CSfsym (floc (), $2, $4) }
| FUNCTION  qualid EQUAL qualid { CSfsym (floc (), $2, $4) }
| PREDICATE qualid EQUAL qualid { CSpsym (floc (), $2, $4) }
| LEMMA     qualid              { CSlemma (floc (), $2) }
| GOAL      qualid              { CSgoal  (floc (), $2) }
382 383
;

384 385 386 387 388
ns:
| uqualid { Some $1 }
| DOT     { None }
;

389 390 391 392 393 394 395 396
/* Meta args */

list1_meta_arg_sep_comma:
| meta_arg                                { [$1] }
| meta_arg COMMA list1_meta_arg_sep_comma { $1 :: $3 }
;

meta_arg:
397 398
| TYPE primitive_type { PMAty $2 }
| CONSTANT  qualid { PMAfs  $2 }
399 400
| FUNCTION  qualid { PMAfs  $2 }
| PREDICATE qualid { PMAps  $2 }
Andrei Paskevich's avatar
Andrei Paskevich committed
401 402
| PROP      qualid { PMApr  $2 }
| STRING           { PMAstr $1 }
403
| INTEGER          { PMAint (small_integer $1) }
404 405
;

406 407 408
/* Type declarations */

list1_type_decl:
409 410
| type_decl                       { [$1] }
| type_decl WITH list1_type_decl  { $1 :: $3 }
411 412 413
;

type_decl:
414
| lident labels type_args typedefn
415
  { let model, vis, def, inv = $4 in
416
    let vis = if model then Abstract else vis in
417
    { td_loc = floc (); td_ident = add_lab $1 $2;
418 419
      td_params = $3; td_model = model;
      td_vis = vis; td_def = def; td_inv = inv } }
420 421
;

422 423 424 425 426 427 428
late_invariant:
| lident labels type_args invariant type_invariant
  { { td_loc = floc (); td_ident = add_lab $1 $2;
      td_params = $3; td_model = false;
      td_vis = Public; td_def = TDabstract; td_inv = $4::$5 } }
;

429
type_args:
430 431
| /* epsilon */                 { [] }
| quote_lident labels type_args { add_lab $1 $2 :: $3 }
Jean-Christophe Filliâtre's avatar
Jean-Christophe Filliâtre committed
432 433 434
;

typedefn:
435
| /* epsilon */
436
    { false, Public, TDabstract, [] }
437
| equal_model visibility typecases type_invariant
438
    { $1, $2, TDalgebraic $3, $4 }
439
| equal_model visibility BAR typecases type_invariant
440
    { $1, $2, TDalgebraic $4, $5 }
441
| equal_model visibility record_type type_invariant
442
    { $1, $2, TDrecord $3, $4 }
443 444 445
/* abstract/private is not allowed for alias type */
| equal_model visibility primitive_type
    { if $2 <> Public then Loc.error ~loc:(floc_i 2) Parsing.Parse_error;
446
      $1, Public, TDalias $3, [] }
447 448 449 450 451 452
;

visibility:
| /* epsilon */ { Public }
| PRIVATE       { Private }
| ABSTRACT      { Abstract }
453 454 455 456 457
;

equal_model:
| EQUAL { false }
| MODEL { true }
458 459 460
;

record_type:
461
| LEFTBRC list1_record_field opt_semicolon RIGHTBRC { List.rev $2 }
462 463 464 465
;

list1_record_field:
| record_field                              { [$1] }
466
| list1_record_field SEMICOLON record_field { $3 :: $1 }
467 468
;

469 470 471 472 473 474 475 476
field_modifiers:
| /* epsilon */ { false, false }
| MUTABLE       { true,  false }
| GHOST         { false, true  }
| GHOST MUTABLE { true,  true  }
| MUTABLE GHOST { true,  true  }
;

477
record_field:
478 479 480 481 482 483
| field_modifiers lident labels COLON primitive_type
   { { f_loc = floc ();
       f_ident = add_lab $2 $3;
       f_mutable = fst $1;
       f_ghost = snd $1;
       f_pty = $5 } }
Jean-Christophe Filliâtre's avatar
Jean-Christophe Filliâtre committed
484 485 486 487 488 489 490 491
;

typecases:
| typecase                { [$1] }
| typecase BAR typecases  { $1::$3 }
;

typecase:
492
| uident labels list0_param   { (floc (), add_lab $1 $2, $3) }
493 494 495 496
;

/* Logic declarations */

Andrei Paskevich's avatar
Andrei Paskevich committed
497 498 499 500 501 502 503 504 505 506
list1_logic_decl_function:
| logic_decl_function                        { [$1] }
| logic_decl_function WITH list1_logic_decl  { $1 :: $3 }
;

list1_logic_decl_predicate:
| logic_decl_predicate                        { [$1] }
| logic_decl_predicate WITH list1_logic_decl  { $1 :: $3 }
;

507
list1_logic_decl:
508 509
| logic_decl                        { [$1] }
| logic_decl WITH list1_logic_decl  { $1 :: $3 }
510 511
;

512 513 514 515 516 517
logic_decl_constant:
| lident_rich labels COLON primitive_type logic_def_option
  { { ld_loc = floc (); ld_ident = add_lab $1 $2;
      ld_params = []; ld_type = Some $4; ld_def = $5 } }
;

Andrei Paskevich's avatar
Andrei Paskevich committed
518
logic_decl_function:
519
| lident_rich labels list0_param COLON primitive_type logic_def_option
Andrei Paskevich's avatar
Andrei Paskevich committed
520 521 522 523 524
  { { ld_loc = floc (); ld_ident = add_lab $1 $2;
      ld_params = $3; ld_type = Some $5; ld_def = $6 } }
;

logic_decl_predicate:
525
| lident_rich labels list0_param logic_def_option
Andrei Paskevich's avatar
Andrei Paskevich committed
526 527 528 529
  { { ld_loc = floc (); ld_ident = add_lab $1 $2;
      ld_params = $3; ld_type = None; ld_def = $4 } }
;

530
logic_decl:
531
| lident_rich labels list0_param opt_cast logic_def_option
532
  { { ld_loc = floc (); ld_ident = add_lab $1 $2;
533
      ld_params = $3; ld_type = $4; ld_def = $5 } }
534 535 536 537 538
;

logic_def_option:
| /* epsilon */ { None }
| EQUAL lexpr   { Some $2 }
Jean-Christophe Filliâtre's avatar
Jean-Christophe Filliâtre committed
539 540
;

541 542 543
/* Inductive declarations */

list1_inductive_decl:
544 545
| inductive_decl                            { [$1] }
| inductive_decl WITH list1_inductive_decl  { $1 :: $3 }
546 547 548
;

inductive_decl:
549
| lident_rich labels list0_param inddefn
550
  { { in_loc = floc (); in_ident = add_lab $1 $2;
551
      in_params = $3; in_def = $4 } }
Andrei Paskevich's avatar
Andrei Paskevich committed
552
;
553

Jean-Christophe Filliâtre's avatar
Jean-Christophe Filliâtre committed
554 555 556 557 558 559 560 561 562 563 564
inddefn:
| /* epsilon */       { [] }
| EQUAL bar_ indcases { $3 }
;

indcases:
| indcase               { [$1] }
| indcase BAR indcases  { $1::$3 }
;

indcase:
565
| ident labels COLON lexpr { (floc (), add_lab $1 $2, $4) }
Jean-Christophe Filliâtre's avatar
Jean-Christophe Filliâtre committed
566 567
;

568 569 570 571
/* Type expressions */

primitive_type:
| primitive_type_arg           { $1 }
572
| lqualid primitive_type_args  { PPTtyapp ($1, $2) }
573 574 575
;

primitive_type_non_lident:
576
| primitive_type_arg_non_lident           { $1 }
577
| uqualid DOT lident primitive_type_args  { PPTtyapp (Qdot ($1, $3), $4) }
578 579 580 581 582 583 584
;

primitive_type_args:
| primitive_type_arg                      { [$1] }
| primitive_type_arg primitive_type_args  { $1 :: $2 }
;

585 586 587 588 589
primitive_type_args_non_lident:
| primitive_type_arg_non_lident                      { [$1] }
| primitive_type_arg_non_lident primitive_type_args  { $1 :: $2 }
;

590
primitive_type_arg:
591
| lident                         { PPTtyapp (Qident $1, []) }
592 593 594 595
| primitive_type_arg_non_lident  { $1 }
;

primitive_type_arg_non_lident:
596
| uqualid DOT lident
597
   { PPTtyapp (Qdot ($1, $3), []) }
598 599 600 601
| quote_lident
   { PPTtyvar ($1, false) }
| opaque_quote_lident
   { PPTtyvar ($1, true) }
602 603
| LEFTPAR primitive_type COMMA list1_primitive_type_sep_comma RIGHTPAR
   { PPTtuple ($2 :: $4) }
604 605 606 607 608 609
| LEFTPAR RIGHTPAR
   { PPTtuple [] }
| LEFTPAR primitive_type RIGHTPAR
   { $2 }
;

Jean-Christophe Filliâtre's avatar
Jean-Christophe Filliâtre committed
610 611 612 613 614
list1_primitive_type_sep_comma:
| primitive_type                                      { [$1] }
| primitive_type COMMA list1_primitive_type_sep_comma { $1 :: $3 }
;

615 616
/* Logic expressions */

Jean-Christophe Filliâtre's avatar
Jean-Christophe Filliâtre committed
617
lexpr:
618
| lexpr ARROW lexpr
Jean-Christophe Filliâtre's avatar
Jean-Christophe Filliâtre committed
619
   { infix_pp $1 PPimplies $3 }
620
| lexpr LRARROW lexpr
Jean-Christophe Filliâtre's avatar
Jean-Christophe Filliâtre committed
621
   { infix_pp $1 PPiff $3 }
622
| lexpr OR lexpr
Jean-Christophe Filliâtre's avatar
Jean-Christophe Filliâtre committed
623
   { infix_pp $1 PPor $3 }
624
| lexpr BARBAR lexpr
625
   { infix_pp (mk_pp (PPnamed (Lstr Term.asym_label, $1))) PPor $3 }
626
| lexpr AND lexpr
Jean-Christophe Filliâtre's avatar
Jean-Christophe Filliâtre committed
627
   { infix_pp $1 PPand $3 }
628
| lexpr AMPAMP lexpr
629
   { infix_pp (mk_pp (PPnamed (Lstr Term.asym_label, $1))) PPand $3 }
630
| NOT lexpr
Jean-Christophe Filliâtre's avatar
Jean-Christophe Filliâtre committed
631
   { prefix_pp PPnot $2 }
632
| lexpr EQUAL lexpr
633
   { mk_l_infix $1 "=" $3 }
634
| lexpr LTGT lexpr
635
   { mk_l_infix $1 "<>" $3 }
636
| lexpr OP1 lexpr
637
   { mk_l_infix $1 $2 $3 }
638
| lexpr OP2 lexpr
639
   { mk_l_infix $1 $2 $3 }
640
| lexpr OP3 lexpr
641
   { mk_l_infix $1 $2 $3 }
642
| lexpr OP4 lexpr
643
   { mk_l_infix $1 $2 $3 }
644
| prefix_op lexpr %prec prec_prefix_op
645
   { mk_l_prefix $1 $2 }
646 647
| qualid list1_lexpr_arg
   { mk_pp (PPapp ($1, $2)) }
648
| IF lexpr THEN lexpr ELSE lexpr
Jean-Christophe Filliâtre's avatar
Jean-Christophe Filliâtre committed
649
   { mk_pp (PPif ($2, $4, $6)) }
650
| quant list1_quant_vars triggers DOT lexpr
Andrei Paskevich's avatar
Andrei Paskevich committed
651
   { mk_pp (PPquant ($1, $2, $3, $5)) }
652 653
| label lexpr %prec prec_named
   { mk_pp (PPnamed ($1, $2)) }
654
| LET pattern EQUAL lexpr IN lexpr
655
   { match $2.pat_desc with
656 657 658 659 660
     | PPpvar id -> mk_pp (PPlet (id, $4, $6))
     | PPpwild -> mk_pp (PPlet (id_anonymous (), $4, $6))
     | PPptuple [] -> mk_pp (PPlet (id_anonymous (),
          { $4 with pp_desc = PPcast ($4, PPTtuple []) }, $6))
     | _ -> mk_pp (PPmatch ($4, [$2, $6])) }
Andrei Paskevich's avatar
Andrei Paskevich committed
661
| MATCH lexpr WITH bar_ match_cases END
662
   { mk_pp (PPmatch ($2, $5)) }
Andrei Paskevich's avatar
Andrei Paskevich committed
663 664
| MATCH lexpr COMMA list1_lexpr_sep_comma WITH bar_ match_cases END
   { mk_pp (PPmatch (mk_pp (PPtuple ($2::$4)), $7)) }
665
/*
666
| EPSILON lident labels COLON primitive_type DOT lexpr
667
   { mk_pp (PPeps ((add_lab $2 $3, Some $5), $7)) }
668
*/
669
| lexpr COLON primitive_type
670
   { mk_pp (PPcast ($1, $3)) }
671
| lexpr_arg
672 673 674
   { match $1.pp_desc with (* break the infix relation chain *)
     | PPinfix (l,o,r) -> { $1 with pp_desc = PPinnfix (l,o,r) }
     | _ -> $1 }
675 676
;

677 678 679 680 681 682 683 684 685
list1_field_value:
| field_value                             { [$1] }
| list1_field_value SEMICOLON field_value { $3 :: $1 }
;

field_value:
| lqualid EQUAL lexpr { $1, $3 }
;

686 687 688
list1_lexpr_arg:
| lexpr_arg                 { [$1] }
| lexpr_arg list1_lexpr_arg { $1::$2 }
Andrei Paskevich's avatar
Andrei Paskevich committed
689
;
690

691
constant:
692 693
| INTEGER   { Number.ConstInt $1 }
| FLOAT     { Number.ConstReal $1 }
694 695
;

696
lexpr_arg:
697 698 699 700 701 702
| qualid            { mk_pp (PPvar $1) }
| constant          { mk_pp (PPconst $1) }
| TRUE              { mk_pp PPtrue }
| FALSE             { mk_pp PPfalse }
| OPPREF lexpr_arg  { mk_l_prefix $1 $2 }
| lexpr_sub         { $1 }
703
| quote_uident      { mk_pp (PPvar (Qident $1)) }
704 705 706
;

lexpr_dot:
707 708 709
| lqualid_copy      { mk_pp (PPvar $1) }
| OPPREF lexpr_dot  { mk_l_prefix $1 $2 }
| lexpr_sub         { $1 }
710 711 712
;

lexpr_sub:
713
| lexpr_dot DOT lqualid_rich
714
   { mk_pp (PPapp ($3, [$1])) }
Jean-Christophe Filliâtre's avatar
Jean-Christophe Filliâtre committed
715 716
| LEFTPAR lexpr RIGHTPAR
   { $2 }
717 718 719 720
| LEFTPAR RIGHTPAR
   { mk_pp (PPtuple []) }
| LEFTPAR lexpr COMMA list1_lexpr_sep_comma RIGHTPAR
   { mk_pp (PPtuple ($2 :: $4)) }
721
| LEFTBRC list1_field_value opt_semicolon RIGHTBRC
722
   { mk_pp (PPrecord (List.rev $2)) }
723
| LEFTBRC lexpr_arg WITH list1_field_value opt_semicolon RIGHTBRC
Andrei Paskevich's avatar
Andrei Paskevich committed
724
   { mk_pp (PPupdate ($2, List.rev $4)) }
725
| lexpr_arg LEFTSQ lexpr RIGHTSQ
726
   { mk_l_mixfix2 "[]" $1 $3 }
727
| lexpr_arg LEFTSQ lexpr LARROW lexpr RIGHTSQ
728
   { mk_l_mixfix3 "[<-]" $1 $3 $5 }
Andrei Paskevich's avatar
Andrei Paskevich committed
729
;
730

Andrei Paskevich's avatar
Andrei Paskevich committed
731 732 733 734
quant:
| FORALL  { PPforall }
| EXISTS  { PPexists }
| LAMBDA  { PPlambda }
735 736
| FUNC    { PPfunc }
| PRED    { PPpred }
Andrei Paskevich's avatar
Andrei Paskevich committed
737 738
;

739
/* Triggers */
Jean-Christophe Filliâtre's avatar
Jean-Christophe Filliâtre committed
740

741 742 743 744
triggers:
| /* epsilon */                         { [] }
| LEFTSQ list1_trigger_sep_bar RIGHTSQ  { $2 }
;
745

746 747 748 749 750 751 752 753 754 755 756 757 758 759 760
list1_trigger_sep_bar:
| trigger                           { [$1] }
| trigger BAR list1_trigger_sep_bar { $1 :: $3 }
;

trigger:
| list1_lexpr_sep_comma { $1 }
;

list1_lexpr_sep_comma:
| lexpr                             { [$1] }
| lexpr COMMA list1_lexpr_sep_comma { $1 :: $3 }
;

/* Match expressions */
761

Jean-Christophe Filliâtre's avatar
Jean-Christophe Filliâtre committed
762 763 764 765 766 767
match_cases:
| match_case                  { [$1] }
| match_case BAR match_cases  { $1::$3 }
;

match_case:
Andrei Paskevich's avatar
Andrei Paskevich committed
768
| pattern ARROW lexpr   { ($1,$3) }
Jean-Christophe Filliâtre's avatar
Jean-Christophe Filliâtre committed
769 770 771
;

pattern:
Andrei Paskevich's avatar
Andrei Paskevich committed
772 773 774 775 776 777 778 779 780 781 782 783 784 785 786
| pat_conj              { $1 }
| pat_conj BAR pattern  { mk_pat (PPpor ($1, $3)) }
;

pat_conj:
| pat_uni                      { $1 }
| pat_uni COMMA list1_pat_uni  { mk_pat (PPptuple ($1::$3)) }
;

list1_pat_uni:
| pat_uni                      { [$1] }
| pat_uni COMMA list1_pat_uni  { $1::$3 }
;

pat_uni:
787 788 789
| pat_arg                   { $1 }
| uqualid list1_pat_arg     { mk_pat (PPpapp ($1, $2)) }
| pat_uni AS lident labels  { mk_pat (PPpas ($1, add_lab $3 $4)) }
Andrei Paskevich's avatar
Andrei Paskevich committed
790
;
791

792
list1_pat_arg:
Andrei Paskevich's avatar
Andrei Paskevich committed
793 794 795
| pat_arg                { [$1] }
| pat_arg list1_pat_arg  { $1::$2 }
;
796

797
pat_arg:
Andrei Paskevich's avatar
Andrei Paskevich committed
798
| UNDERSCORE                { mk_pat (PPpwild) }
799
| lident labels             { mk_pat (PPpvar (add_lab $1 $2)) }
Andrei Paskevich's avatar
Andrei Paskevich committed
800 801 802
| uqualid                   { mk_pat (PPpapp ($1, [])) }
| LEFTPAR RIGHTPAR          { mk_pat (PPptuple []) }
| LEFTPAR pattern RIGHTPAR  { $2 }
803
| LEFTBRC pfields RIGHTBRC  { mk_pat (PPprec $2) }
Andrei Paskevich's avatar
Andrei Paskevich committed
804 805 806 807 808 809 810 811 812
;

pfields:
| pat_field opt_semicolon       { [$1] }
| pat_field SEMICOLON pfields   { $1::$3 }
;

pat_field:
| lqualid EQUAL pattern   { ($1, $3) }
Jean-Christophe Filliâtre's avatar
Jean-Christophe Filliâtre committed
813 814
;

815
/* Binders */
Jean-Christophe Filliâtre's avatar
Jean-Christophe Filliâtre committed
816

817 818 819
list0_param:
| /* epsilon */ { [] }
| list1_param   { $1 }
Jean-Christophe Filliâtre's avatar
Jean-Christophe Filliâtre committed
820 821
;

822 823 824 825 826 827 828 829 830 831
list1_param:
| list1_binder  { params_of_binders $1 }
;

list1_binder:
| binder              { $1 }
| binder list1_binder { $1 @ $2 }
;

binder:
832 833 834 835
| quote_lident
   { [floc (), None, false, Some (PPTtyvar ($1, false))] }
| opaque_quote_lident
   { [floc (), None, false, Some (PPTtyvar ($1, true))] }
836 837 838 839 840 841 842 843 844 845 846 847 848 849
| lqualid_qualified
   { [floc (), None, false, Some (PPTtyapp ($1, []))] }
| lident labels
   { [floc (), Some (add_lab $1 $2), false, None] }
| UNDERSCORE
   { Loc.errorm ~loc:(floc ()) "untyped anonymous parameters are not allowed" }
| LEFTPAR RIGHTPAR
   { [floc (), None, false, Some (PPTtuple [])] }
| LEFTPAR binder_in RIGHTPAR
   { $2 }
| LEFTPAR GHOST binder_in RIGHTPAR
   { List.map (fun (l,i,_,t) -> (l,i,true,t)) $3 }
| LEFTPAR binder_type COMMA list1_primitive_type_sep_comma RIGHTPAR
   { [floc (), None, false, Some (PPTtuple ($2::$4))] }
Jean-Christophe Filliâtre's avatar
Jean-Christophe Filliâtre committed
850 851
;

852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872
binder_in:
| lident labels
   { [floc (), Some (add_lab $1 $2), false, None] }
| UNDERSCORE
   { Loc.errorm ~loc:(floc ()) "untyped anonymous parameters are not allowed" }
| binder_type_rest
   { [floc (), None, false, Some $1] }
| binder_vars COLON primitive_type
   { List.map (fun (l,v) -> l, v, false, Some $3) $1 }
;

binder_type:
| lident            { PPTtyapp (Qident $1, []) }
| binder_type_rest  { $1 }
;

binder_type_rest:
| lident list1_lident
   { PPTtyapp (Qident $1, List.map pty_of_id $2) }
| lident list0_lident primitive_type_args_non_lident
   { PPTtyapp (Qident $1, List.map pty_of_id $2 @ $3) }
873 874
| primitive_type_non_lident
   { $1 }
Jean-Christophe Filliâtre's avatar
Jean-Christophe Filliâtre committed
875 876
;

877 878 879 880 881 882 883 884 885 886 887 888 889 890
binder_vars:
| list1_lident
   { List.map (fun id -> id.id_loc, Some id) $1 }
| list1_lident UNDERSCORE list0_lident_labels
   { List.map (fun id -> id.id_loc, Some id) $1 @ (floc_i 2, None) :: $3 }
| lident list1_lident label labels list0_lident_labels
   { let l = match List.rev ($1 :: $2) with
       | i :: l -> add_lab i ($3 :: $4) :: l
       | [] -> assert false in
     List.fold_left (fun acc id -> (id.id_loc, Some id) :: acc) $5 l }
| lident label labels list0_lident_labels
   { ($1.id_loc, Some (add_lab $1 ($2 :: $3))) :: $4 }
| UNDERSCORE list0_lident_labels
   { (floc_i 1, None) :: $2 }
Jean-Christophe Filliâtre's avatar
Jean-Christophe Filliâtre committed
891 892
;

893 894 895
list0_lident:
| /* epsilon */ { [] }
| list1_lident  { $1 }
Jean-Christophe Filliâtre's avatar
Jean-Christophe Filliâtre committed
896 897
;

898 899
list1_lident:
| lident list0_lident  { $1 :: $2 }
Jean-Christophe Filliâtre's avatar
Jean-Christophe Filliâtre committed
900 901
;

902 903 904 905 906 907 908 909
list1_quant_vars:
| quant_vars                        { $1 }
| quant_vars COMMA list1_quant_vars { $1 @ $3 }
;

quant_vars:
| list1_lident_labels COLON primitive_type
   { quvars_of_lidents (Some $3) $1 }
910 911
;

912
list0_lident_labels:
913 914 915 916 917 918 919 920 921 922 923
| /* epsilon */        { [] }
| list1_lident_labels  { $1 }
;

list1_lident_labels:
| lident_labels list0_lident_labels  { $1 :: $2 }
;

lident_labels:
| lident labels { floc (), Some (add_lab $1 $2) }
| UNDERSCORE    { floc (), None }
924 925
;

926 927 928 929 930
/* Idents */

ident:
| uident { $1 }
| lident { $1 }
Jean-Christophe Filliâtre's avatar
Jean-Christophe Filliâtre committed
931 932
;

933 934 935 936 937 938 939 940 941 942 943 944 945
uident:
| UIDENT          { mk_id $1 (floc ()) }
;

lident:
| LIDENT          { mk_id $1 (floc ()) }
| lident_keyword  { mk_id $1 (floc ()) }
;

lident_keyword:
| MODEL           { "model" }
;

946 947 948 949 950 951 952 953 954 955 956 957
quote_uident:
| QUOTE_UIDENT    { mk_id ("'" ^ $1) (floc ()) }
;

quote_lident:
| QUOTE_LIDENT    { mk_id $1 (floc ()) }
;

opaque_quote_lident:
| OPAQUE_QUOTE_LIDENT { mk_id $1 (floc ()) }
;

958 959
/* Idents + symbolic operations' names */

960 961 962
ident_rich:
| uident      { $1 }
| lident_rich { $1 }
963 964
;

965
lident_rich:
966 967 968 969 970
| lident        { $1 }
| lident_op_id  { $1 }
;

lident_op_id:
971
| LEFTPAR lident_op RIGHTPAR  { mk_id $2 (floc_i 2) }
972
| LEFTPAR_STAR_RIGHTPAR       { mk_id (infix "*") (floc ()) }
973
  /* FIXME: use location of operator star rather than left parenthesis */
974 975
;

976
lident_op:
977 978 979 980 981 982
| prefix_op             { infix $1 }
| prefix_op UNDERSCORE  { prefix $1 }
| EQUAL                 { infix "=" }
| OPPREF                { prefix $1 }
| LEFTSQ RIGHTSQ        { mixfix "[]" }
| LEFTSQ LARROW RIGHTSQ { mixfix "[<-]" }
983
| LEFTSQ RIGHTSQ LARROW { mixfix "[]<-" }
984 985
;

986
prefix_op:
987 988 989 990 991 992
| OP1   { $1 }
| OP2   { $1 }
| OP3   { $1 }
| OP4   { $1 }
;

993
/* Qualified idents */
994

995 996 997
qualid:
| ident_rich              { Qident $1 }
| uqualid DOT ident_rich  { Qdot ($1, $3) }
998 999
;

1000 1001 1002
lqualid_rich:
| lident_rich             { Qident $1 }
| uqualid DOT lident_rich { Qdot ($1, $3) }
1003 1004 1005
;

lqualid:
1006 1007
| lident              { Qident $1 }
| uqualid DOT lident  { Qdot ($1, $3) }
1008 1009
;

1010 1011 1012 1013
/* copy of lqualid to avoid yacc conflicts */
lqualid_copy:
| lident              { Qident $1 }
| uqualid DOT lident  { Qdot ($1, $3) }
1014 1015
;

1016 1017 1018 1019
lqualid_qualified:
| uqualid DOT lident  { Qdot ($1, $3) }
;

1020 1021 1022
uqualid:
| uident              { Qident $1 }
| uqualid DOT uident  { Qdot ($1, $3) }
1023 1024
;

1025 1026 </