This file is indexed.

/usr/lib/ats2-postiats-0.1.3/prelude/SATS/pointer.sats is in ats2-lang 0.1.3-1.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

  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
(***********************************************************************)
(*                                                                     *)
(*                         Applied Type System                         *)
(*                                                                     *)
(***********************************************************************)

(*
** ATS/Postiats - Unleashing the Potential of Types!
** Copyright (C) 2010-2013 Hongwei Xi, ATS Trustful Software, Inc.
** All rights reserved
**
** ATS is free software;  you can  redistribute it and/or modify it under
** the terms of  the GNU GENERAL PUBLIC LICENSE (GPL) as published by the
** Free Software Foundation; either version 3, or (at  your  option)  any
** later version.
**
** ATS 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 General Public License
** for more details.
**
** You  should  have  received  a  copy of the GNU General Public License
** along  with  ATS;  see the  file COPYING.  If not, please write to the
** Free Software Foundation,  51 Franklin Street, Fifth Floor, Boston, MA
** 02110-1301, USA.
*)

(* ****** ****** *)

(*
** Source:
** $PATSHOME/prelude/SATS/CODEGEN/pointer.atxt
** Time of generation: Fri Sep 26 22:20:42 2014
*)

(* ****** ****** *)

(* Author: Hongwei Xi *)
(* Authoremail: hwxi AT cs DOT bu DOT edu *)
(* Start time: March, 2012 *)

(* ****** ****** *)

sortdef tk = tkind

(* ****** ****** *)

sortdef t0p = t@ype and vt0p = viewt@ype

(* ****** ****** *)

stadef ptrknd = ptr_kind

(* ****** ****** *)
//
castfn g0ofg1_ptr (p: Ptr):<> ptr
castfn g1ofg0_ptr (p: ptr):<> Ptr0
//
overload g0ofg1 with g0ofg1_ptr
overload g1ofg0 with g1ofg0_ptr
//
(* ****** ****** *)
//
prfun
lemma_ptr_param {l:addr} (p: ptr l): [l >= null] void
//
(* ****** ****** *)

prfun ptr_get_index
  {l1:addr} (p: ptr l1): [l2:addr] EQADDR (l1, l2)
// end of [ptr_get_index]

(* ****** ****** *)
//
symintr ptr_is_null
symintr ptr_isnot_null
//
(* ****** ****** *)
//
symintr add_ptr_bsz
symintr sub_ptr_bsz
//
// add_ptr_bsz (p, ofs) = p + ofs
// sub_ptr_bsz (p, ofs) = p - ofs
//
(* ****** ****** *)
//
symintr ptr_succ
symintr ptr_pred
//
// ptr_succ<a>(p) = p + sizeof<a>
// ptr_pred<a>(p) = p - sizeof<a>
//
(* ****** ****** *)
//
symintr ptr_add ptr_sub
//
// ptr_add<a> (p, ofs) = p + ofs*sizeof<a>
// ptr_sub<a> (p, ofs) = p - ofs*sizeof<a>
//
(* ****** ****** *)

fun ptr0_is_null (p: ptr):<> bool = "mac#%"
overload ptr_is_null with ptr0_is_null of 0
fun ptr0_isnot_null (p: ptr):<> bool = "mac#%"
overload ptr_isnot_null with ptr0_isnot_null of 0

(* ****** ****** *)
//
fun add_ptr0_bsz
  (p: ptr, ofs: size_t):<> ptr = "mac#%"
fun sub_ptr0_bsz
  (p: ptr, ofs: size_t):<> ptr = "mac#%"
//
overload add_ptr_bsz with add_ptr0_bsz of 0
overload sub_ptr_bsz with sub_ptr0_bsz of 0
//
(* ****** ****** *)

fun sub_ptr0_ptr0
  (p1: ptr, p2: ptr):<> ssize_t = "mac#%"
overload - with sub_ptr0_ptr0 of 0

(* ****** ****** *)
//
fun{a:vt0p} ptr0_succ (p: ptr):<> ptr
fun{a:vt0p} ptr0_pred (p: ptr):<> ptr
//
overload ptr_succ with ptr0_succ of 0
overload ptr_pred with ptr0_pred of 0
//
(* ****** ****** *)
//
fun{
a:vt0p}{tk:tk
} ptr0_add_gint (p: ptr, ofs: g0int (tk)):<> ptr
fun{
a:vt0p}{tk:tk
} ptr0_add_guint (p: ptr, ofs: g0uint (tk)):<> ptr
//
overload ptr_add with ptr0_add_gint of 0
overload ptr_add with ptr0_add_guint of 0
//
fun{
a:vt0p}{tk:tk
} ptr0_sub_gint (p: ptr, ofs: g0int (tk)):<> ptr
fun{
a:vt0p}{tk:tk
} ptr0_sub_guint (p: ptr, ofs: g0uint (tk)):<> ptr
//
overload ptr_sub with ptr0_sub_gint of 0
overload ptr_sub with ptr0_sub_guint of 0
//
(* ****** ****** *)

fun lt_ptr0_ptr0
  (p1: ptr, p2: ptr):<> bool = "mac#%"
overload < with lt_ptr0_ptr0 of 0
fun lte_ptr0_ptr0
  (p1: ptr, p2: ptr):<> bool = "mac#%"
overload <= with lte_ptr0_ptr0 of 0
fun gt_ptr0_ptr0
  (p1: ptr, p2: ptr):<> bool = "mac#%"
overload > with gt_ptr0_ptr0 of 0
fun gte_ptr0_ptr0
  (p1: ptr, p2: ptr):<> bool = "mac#%"
overload >= with gte_ptr0_ptr0 of 0
fun eq_ptr0_ptr0
  (p1: ptr, p2: ptr):<> bool = "mac#%"
overload = with eq_ptr0_ptr0 of 0
fun neq_ptr0_ptr0
  (p1: ptr, p2: ptr):<> bool = "mac#%"
overload != with neq_ptr0_ptr0 of 0
overload <> with neq_ptr0_ptr0 of 0

fun compare_ptr0_ptr0
  (p1: ptr, p2: ptr):<> int = "mac#%"
overload compare with compare_ptr0_ptr0 of 0

(* ****** ****** *)

fun gt_ptr0_intz
  (p: ptr, i: int(0)):<> bool = "mac#%"
overload > with gt_ptr0_intz of 0
fun eq_ptr0_intz
  (p: ptr, i: int(0)):<> bool = "mac#%"
overload = with eq_ptr0_intz of 0
fun neq_ptr0_intz
  (p: ptr, i: int(0)):<> bool = "mac#%"
overload != with neq_ptr0_intz of 0
overload <> with neq_ptr0_intz of 0

(* ****** ****** *)

(*
fun{a:vt0p}
ptr0_add_int (p: ptr, i: int): ptr
fun{a:vt0p}
ptr0_add_lint (p: ptr, i: lint): ptr
fun{a:vt0p}
ptr0_add_ssize (p: ptr, i: ssize): ptr
fun{a:vt0p}
ptr0_add_uint (p: ptr, u: uint): ptr
fun{a:vt0p}
ptr0_add_ulint (p: ptr, u: ulint): ptr
fun{a:vt0p}
ptr0_add_size (p: ptr, u: size): ptr
*)

(*
fun{a:vt0p}
ptr0_sub_int (p: ptr, i: int): ptr
fun{a:vt0p}
ptr0_sub_lint (p: ptr, i: lint): ptr
fun{a:vt0p}
ptr0_sub_ssize (p: ptr, i: ssize): ptr
fun{a:vt0p}
ptr0_sub_uint (p: ptr, u: uint): ptr
fun{a:vt0p}
ptr0_sub_ulint (p: ptr, u: ulint): ptr
fun{a:vt0p}
ptr0_sub_size (p: ptr, u: size): ptr
*)

(* ****** ****** *)

fun print_ptr (p: ptr): void = "mac#%"
fun prerr_ptr (p: ptr): void = "mac#%"
overload print with print_ptr
overload prerr with prerr_ptr
fun fprint_ptr : fprint_type (ptr) = "mac#%"
overload fprint with fprint_ptr

(* ****** ****** *)

praxi
ptr1_is_gtez {l:addr} (p: ptr l): [l >= null] void

(* ****** ****** *)
//
fun ptr1_is_null
  {l:addr} (p: ptr l):<> bool (l==null) = "mac#%"
fun ptr1_isnot_null
  {l:addr} (p: ptr l):<> bool (l > null) = "mac#%"
//
overload ptr_is_null with ptr1_is_null of 10
overload ptr_isnot_null with ptr1_isnot_null of 10
//
(* ****** ****** *)
//
fun add_ptr1_bsz{l:addr}{i:int}
  (p: ptr l, ofs: size_t (i)):<> ptr (l+i) = "mac#%"
fun sub_ptr1_bsz{l:addr}{i:int}
  (p: ptr l, ofs: size_t (i)):<> ptr (l-i) = "mac#%"
//
overload add_ptr_bsz with add_ptr1_bsz of 20
overload sub_ptr_bsz with sub_ptr1_bsz of 20
//
(* ****** ****** *)

fun sub_ptr1_ptr1{l1,l2:addr}
  (p1: ptr l1, p2: ptr l2):<> ssize_t (l1-l2) = "mac#%"
overload - with sub_ptr1_ptr1 of 20

(* ****** ****** *)
//
fun{
a:vt0p
} ptr1_succ{l:addr} (p: ptr l):<> ptr (l+sizeof(a))
fun{
a:vt0p
} ptr1_pred{l:addr} (p: ptr l):<> ptr (l-sizeof(a))
//
overload ptr_succ with ptr1_succ of 10
overload ptr_pred with ptr1_pred of 10
//
(* ****** ****** *)
//
fun{
a:vt0p}{tk:tk
} ptr1_add_gint
  {l:addr}{i:int}
  (p: ptr l, ofs: g1int (tk, i)):<> ptr(l+i*sizeof(a))
fun{
a:vt0p}{tk:tk
} ptr1_add_guint
  {l:addr}{i:int}
  (p: ptr l, ofs: g1uint (tk, i)):<> ptr(l+i*sizeof(a))
//
overload ptr_add with ptr1_add_gint of 20
overload ptr_add with ptr1_add_guint of 20
//
(* ****** ****** *)
//
fun{
a:vt0p}{tk:tk
} ptr1_sub_gint
  {l:addr}{i:int}
  (p: ptr l, ofs: g1int (tk, i)):<> ptr(l-i*sizeof(a))
fun{
a:vt0p}{tk:tk
} ptr1_sub_guint
  {l:addr}{i:int}
  (p: ptr l, ofs: g1uint (tk, i)):<> ptr(l-i*sizeof(a))
//
overload ptr_sub with ptr1_sub_gint of 20
overload ptr_sub with ptr1_sub_guint of 20
//
(* ****** ****** *)

fun lt_ptr1_ptr1
  {l1,l2:addr} (
  p1: ptr (l1), p2: ptr (l2)
) :<> bool (l1 < l2) = "mac#%"
overload < with lt_ptr1_ptr1 of 20
fun lte_ptr1_ptr1
  {l1,l2:addr} (
  p1: ptr (l1), p2: ptr (l2)
) :<> bool (l1 <= l2) = "mac#%"
overload <= with lte_ptr1_ptr1 of 20
fun gt_ptr1_ptr1
  {l1,l2:addr} (
  p1: ptr (l1), p2: ptr (l2)
) :<> bool (l1 > l2) = "mac#%"
overload > with gt_ptr1_ptr1 of 20
fun gte_ptr1_ptr1
  {l1,l2:addr} (
  p1: ptr (l1), p2: ptr (l2)
) :<> bool (l1 >= l2) = "mac#%"
overload >= with gte_ptr1_ptr1 of 20
fun eq_ptr1_ptr1
  {l1,l2:addr} (
  p1: ptr (l1), p2: ptr (l2)
) :<> bool (l1 == l2) = "mac#%"
overload = with eq_ptr1_ptr1 of 20
fun neq_ptr1_ptr1
  {l1,l2:addr} (
  p1: ptr (l1), p2: ptr (l2)
) :<> bool (l1 != l2) = "mac#%"
overload != with neq_ptr1_ptr1 of 20
overload <> with neq_ptr1_ptr1 of 20

fun compare_ptr1_ptr1
  {l1,l2:addr} (p1: ptr l1, p2: ptr l2) :<> int = "mac#%"
overload compare with compare_ptr1_ptr1 of 20

(* ****** ****** *)

fun gt_ptr1_intz {l:addr}
  (p: ptr l, i: int(0)):<> bool(l > null) = "mac#%"
overload > with gt_ptr1_intz of 10
fun eq_ptr1_intz {l:addr}
  (p: ptr l, i: int(0)):<> bool(l == null) = "mac#%"
overload = with eq_ptr1_intz of 10
fun neq_ptr1_intz {l:addr}
  (p: ptr l, i: int(0)):<> bool(l > null) = "mac#%"
overload != with neq_ptr1_intz of 10
overload <> with neq_ptr1_intz of 10

(* ****** ****** *)
//
// HX: implemented in [prelude/DATS/pointer.dats]
//
fun{a:vt0p}
ptr_get{l:addr}
  (pf: !INV(a) @ l >> a?! @ l | p: ptr l):<> a
// end of [ptr_get]

fun{a:vt0p}
ptr_set{l:addr}
  (pf: !a? @ l >> a @ l | p: ptr l, x: INV(a)):<!wrt> void
// end of [ptr_set]

fun{a:vt0p}
ptr_exch{l:addr}
  (pf: !INV(a) @ l | p: ptr l, x: &a >> a):<!wrt> void
// end of [ptr_exch]

(* ****** ****** *)

abstype
cptr_vt0ype_addr_type
  (a:vt@ype+, addr) = ptr // HX: for simulating C pointers
stadef cptr = cptr_vt0ype_addr_type
stadef cPtr0 (a:vt0p) = [l:addr] cptr (a, l)
stadef cPtr1 (a:vt0p) = [l:addr | l > null] cptr (a, l)

castfn
cptr2ptr{a:vt0p}{l:addr} (p: cptr (a, l)):<> ptr (l)

(* ****** ****** *)
//
fun cptr_null{a:vt0p} ():<> cptr (a, null) = "mac#%"
//
castfn cptr_rvar{a:vt0p} (x: &INV(a)):<> cPtr1 (a) // read
castfn cptr_wvar{a:vt0p} (x: &a? >> a):<> cPtr1 (a) // write
//
(* ****** ****** *)
//
fun cptr_succ
  {a:vt0p}{l:addr} (p: cptr (a, l)):<> cptr (a, l+sizeof(a))
fun cptr_pred
  {a:vt0p}{l:addr} (p: cptr (a, l)):<> cptr (a, l-sizeof(a))
//
(* ****** ****** *)
//
fun cptr_is_null
  {a:vt0p}{l:addr} (p: cptr (a, l)):<> bool (l==null) = "mac#%"
fun cptr_isnot_null
  {a:vt0p}{l:addr} (p: cptr (a, l)):<> bool (l > null) = "mac#%"
//
overload iseqz with cptr_is_null
overload isneqz with cptr_isnot_null
//
(* ****** ****** *)

typedef voidptr (l:addr) = cptr (void, l)
typedef voidptr0 = [l:addr] voidptr (l)
typedef voidptr1 = [l:addr | l > null] voidptr (l)

typedef charptr (l:addr) = cptr (char, l)
typedef charptr0 = [l:addr] charptr (l)
typedef charptr1 = [l:addr | l > null] charptr (l)

typedef constcharptr (l:addr) = charptr (l) // HX: commenting
typedef constcharptr0 = charptr0 // HX: for commenting purpose
typedef constcharptr1 = charptr1 // HX: for commenting purpose

(* ****** ****** *)
//
absprop
is_nullable (a: vt@ype+) // covariant
//
fun{a:vt0p}
ptr_nullize
  (pf: is_nullable (a) | x: &a? >> a):<!wrt> void
fun
ptr_nullize_tsz
  {a:vt0p} (
  pf: is_nullable (a) | x: &a? >> a, tsz: sizeof_t (a)
) :<!wrt> void = "mac#%" // end of [ptr_nullize_tsz]
//
(* ****** ****** *)

fun{
a:vt0p
} ptr_alloc ()
  :<> [l:agz] (a? @ l, mfree_gc_v (l) | ptr l)
// end of [ptr_alloc]

fun ptr_alloc_tsz
  {a:vt0p} (tsz: sizeof_t a)
  :<> [l:agz] (a? @ l, mfree_gc_v (l) | ptr l) = "mac#%"
// end of [ptr_alloc_tsz]

fun ptr_free
  {a:t@ype}{l:addr}
  (pfgc: mfree_gc_v (l), pfat: a @ l | p: ptr l):<> void = "mac#%"
// end of [ptr_free]

(* ****** ****** *)
//
absvtype ptrlin (l:addr) = ptr
//
praxi ptrlin_free{l:addr} (p: ptrlin (l)): void
//
castfn ptr2ptrlin{l:addr} (p: ptr l):<> ptrlin (l)
castfn ptrlin2ptr{l:addr} (p: ptrlin l):<> ptr (l)
//
(* ****** ****** *)
//
// HX-2014-05-16:
// A hack to stop buggy compilation
//
fun ptr_volatile (p: ptr): void
//
(* ****** ****** *)
//
// overloading for certain symbols
//
overload succ with ptr0_succ
overload succ with ptr1_succ
overload succ with cptr_succ
//
overload pred with ptr0_pred
overload pred with ptr1_pred
overload pred with cptr_pred
//
overload iseqz with ptr0_is_null of 0
overload isneqz with ptr0_isnot_null of 0
//
overload iseqz with ptr1_is_null of 10
overload isneqz with ptr1_isnot_null of 10
//
overload iseqz with cptr_is_null of 10
overload isneqz with cptr_isnot_null of 10
//
(* ****** ****** *)

(* end of [pointer.sats] *)