OpenCores
URL https://opencores.org/ocsvn/openrisc/openrisc/trunk

Subversion Repositories openrisc

[/] [openrisc/] [trunk/] [gnu-dev/] [or1k-gcc/] [gcc/] [testsuite/] [ada/] [acats/] [tests/] [cxa/] [cxa4015.a] - Blame information for rev 720

Details | Compare with Previous | View Log

Line No. Rev Author Line
1 720 jeremybenn
-- CXA4015.A
2
--
3
--                             Grant of Unlimited Rights
4
--
5
--     Under contracts F33600-87-D-0337, F33600-84-D-0280, MDA903-79-C-0687,
6
--     F08630-91-C-0015, and DCA100-97-D-0025, the U.S. Government obtained
7
--     unlimited rights in the software and documentation contained herein.
8
--     Unlimited rights are defined in DFAR 252.227-7013(a)(19).  By making
9
--     this public release, the Government intends to confer upon all
10
--     recipients unlimited rights  equal to those held by the Government.
11
--     These rights include rights to use, duplicate, release or disclose the
12
--     released technical data and computer software in whole or in part, in
13
--     any manner and for any purpose whatsoever, and to have or permit others
14
--     to do so.
15
--
16
--                                    DISCLAIMER
17
--
18
--     ALL MATERIALS OR INFORMATION HEREIN RELEASED, MADE AVAILABLE OR
19
--     DISCLOSED ARE AS IS.  THE GOVERNMENT MAKES NO EXPRESS OR IMPLIED
20
--     WARRANTY AS TO ANY MATTER WHATSOEVER, INCLUDING THE CONDITIONS OF THE
21
--     SOFTWARE, DOCUMENTATION OR OTHER INFORMATION RELEASED, MADE AVAILABLE
22
--     OR DISCLOSED, OR THE OWNERSHIP, MERCHANTABILITY, OR FITNESS FOR A
23
--     PARTICULAR PURPOSE OF SAID MATERIAL.
24
--*
25
--
26
-- OBJECTIVE:
27
--      Check that the subprograms defined in package Ada.Strings.Wide_Fixed
28
--      are available, and that they produce correct results.  Specifically,
29
--      check the subprograms Count, Find_Token, Index, Index_Non_Blank, and
30
--      Move.
31
--
32
-- TEST DESCRIPTION:
33
--      This test, when combined with tests CXA4013,14,16 will provide
34
--      coverage of the functionality found in Ada.Strings.Wide_Fixed.
35
--      This test contains many small, specific test cases, situations that
36
--      although common in user environments, are often difficult to generate
37
--      in large numbers in a application-based test.
38
--
39
--
40
-- CHANGE HISTORY:
41
--      06 Dec 94   SAIC    ACVC 2.0
42
--      02 Nov 95   SAIC    Corrected various accesssibility problems and
43
--                          expected result strings for ACVC 2.0.1.
44
--
45
--!
46
 
47
package CXA40150 is
48
 
49
   -- Wide Character mapping function defined for use with specific
50
   -- versions of functions Index and Count.
51
 
52
   function AK_to_ZQ_Mapping (From : Wide_Character) return Wide_Character;
53
 
54
end CXA40150;
55
 
56
package body CXA40150 is
57
 
58
   function AK_to_ZQ_Mapping (From : Wide_Character)
59
     return Wide_Character is
60
   begin
61
      if From = 'a' then
62
         return 'z';
63
      elsif From = 'k' then
64
         return 'q';
65
      else
66
         return From;
67
      end if;
68
   end AK_to_ZQ_Mapping;
69
 
70
end CXA40150;
71
 
72
 
73
with CXA40150;
74
with Report;
75
with Ada.Strings;
76
with Ada.Strings.Wide_Fixed;
77
with Ada.Strings.Wide_Maps;
78
 
79
procedure CXA4015 is
80
begin
81
 
82
   Report.Test("CXA4015", "Check that the subprograms defined in "         &
83
                          "package Ada.Strings.Wide_Fixed are available, " &
84
                          "and that they produce correct results");
85
 
86
 
87
   Test_Block:
88
   declare
89
 
90
      use CXA40150;
91
 
92
      package ASF  renames Ada.Strings.Wide_Fixed;
93
      package Maps renames Ada.Strings.Wide_Maps;
94
 
95
      Result_String  : Wide_String(1..10) :=
96
                          (others => Ada.Strings.Wide_Space);
97
 
98
      Source_String1 : Wide_String(1..5)  := "abcde";  -- odd len Wide_String
99
      Source_String2 : Wide_String(1..6)  := "abcdef"; -- even len Wide_String
100
      Source_String3 : Wide_String(1..12) := "abcdefghijkl";
101
      Source_String4 : Wide_String(1..12) := "abcdefghij  "; -- last 2 ch pad
102
      Source_String5 : Wide_String(1..12) := "  cdefghijkl"; -- first 2 ch pad
103
      Source_String6 : Wide_String(1..12) := "abcdefabcdef";
104
 
105
      Location       : Natural := 0;
106
      Slice_Start    : Positive;
107
      Slice_End,
108
      Slice_Count    : Natural := 0;
109
 
110
      CD_Set         : Maps.Wide_Character_Set := Maps.To_Set("cd");
111
      ABCD_Set       : Maps.Wide_Character_Set := Maps.To_Set("abcd");
112
      A_to_F_Set     : Maps.Wide_Character_Set := Maps.To_Set("abcdef");
113
 
114
      CD_to_XY_Map   : Maps.Wide_Character_Mapping :=
115
                         Maps.To_Mapping(From => "cd",  To => "xy");
116
 
117
 
118
      -- Access-to-Subprogram object defined for use with specific versions of
119
      -- functions Index and Count.
120
 
121
      Map_Ptr : Maps.Wide_Character_Mapping_Function :=
122
                  AK_to_ZQ_Mapping'Access;
123
 
124
 
125
   begin
126
 
127
 
128
      -- Procedure Move
129
      -- Evaluate the Procedure Move with various combinations of
130
      -- parameters.
131
 
132
      -- Justify = Left (default case)
133
 
134
      ASF.Move(Source => Source_String1,       -- "abcde"
135
               Target => Result_String);
136
 
137
      if Result_String /= "abcde     " then
138
         Report.Failed("Incorrect result from Move with Justify = Left");
139
      end if;
140
 
141
      -- Justify = Right
142
 
143
      ASF.Move(Source  => Source_String2,      -- "abcdef"
144
               Target  => Result_String,
145
               Drop    => Ada.Strings.Error,
146
               Justify => Ada.Strings.Right);
147
 
148
      if Result_String /= "    abcdef" then
149
         Report.Failed("Incorrect result from Move with Justify = Right");
150
      end if;
151
 
152
      -- Justify = Center (two cases, odd and even pad lengths)
153
 
154
      ASF.Move(Source_String1,                 -- "abcde"
155
               Result_String,
156
               Ada.Strings.Error,
157
               Ada.Strings.Center,
158
               'x');                           -- non-default padding.
159
 
160
      if Result_String /= "xxabcdexxx" then  -- Unequal padding added right
161
         Report.Failed("Incorrect result from Move with Justify = Center-1");
162
      end if;
163
 
164
      ASF.Move(Source_String2,                 -- "abcdef"
165
               Result_String,
166
               Ada.Strings.Error,
167
               Ada.Strings.Center);
168
 
169
      if Result_String /= "  abcdef  " then  -- Equal padding added on L/R.
170
         Report.Failed("Incorrect result from Move with Justify = Center-2");
171
      end if;
172
 
173
      -- When the source Wide_String is longer than the target Wide_String,
174
      -- several cases can be examined, with the results depending on the
175
      -- value of the Drop parameter.
176
 
177
      -- Drop = Left
178
 
179
      ASF.Move(Source => Source_String3,       -- "abcdefghijkl"
180
               Target => Result_String,
181
               Drop   => Ada.Strings.Left);
182
 
183
      if Result_String /= "cdefghijkl" then
184
         Report.Failed("Incorrect result from Move with Drop = Left");
185
      end if;
186
 
187
      -- Drop = Right
188
 
189
      ASF.Move(Source_String3, Result_String, Ada.Strings.Right);
190
 
191
      if Result_String /= "abcdefghij" then
192
         Report.Failed("Incorrect result from Move with Drop = Right");
193
      end if;
194
 
195
      -- Drop = Error
196
      -- The effect in this case depends on the value of the justify
197
      -- parameter, and on whether any characters in Source other than
198
      -- Pad would fail to be copied.
199
 
200
      -- Drop = Error, Justify = Left, right overflow characters are pad.
201
 
202
      ASF.Move(Source  => Source_String4,      -- "abcdefghij  "
203
               Target  => Result_String,
204
               Drop    => Ada.Strings.Error,
205
               Justify => Ada.Strings.Left);
206
 
207
      if not(Result_String = "abcdefghij") then  -- leftmost 10 characters
208
          Report.Failed("Incorrect result from Move with Drop = Error - 1");
209
      end if;
210
 
211
      -- Drop = Error, Justify = Right, left overflow characters are pad.
212
 
213
      ASF.Move(Source_String5,                 -- "  cdefghijkl"
214
               Result_String,
215
               Ada.Strings.Error,
216
               Ada.Strings.Right);
217
 
218
      if Result_String /= "cdefghijkl" then  -- rightmost 10 characters
219
         Report.Failed("Incorrect result from Move with Drop = Error - 2");
220
      end if;
221
 
222
      -- In other cases of Drop=Error, Length_Error is propagated, such as:
223
 
224
      begin
225
 
226
         ASF.Move(Source_String3,     -- 12 characters, no Pad.
227
                  Result_String,      -- 10 characters
228
                  Ada.Strings.Error,
229
                  Ada.Strings.Left);
230
 
231
         Report.Failed("Length_Error not raised by Move - 1");
232
 
233
      exception
234
         when Ada.Strings.Length_Error => null;   -- OK
235
         when others =>
236
            Report.Failed("Incorrect exception raised by Move - 1");
237
      end;
238
 
239
 
240
 
241
      -- Function Index
242
      -- (Other usage examples of this function found in CXA4013-14.)
243
      -- Check when the pattern is not found in the source.
244
 
245
      if ASF.Index("abcdef", "gh")       /= 0 or
246
         ASF.Index("abcde",  "abcdef")   /= 0 or  -- pattern > source
247
         ASF.Index("xyz",
248
                   "abcde",
249
                   Ada.Strings.Backward) /= 0 or
250
         ASF.Index("",      "ab")        /= 0 or  -- null source Wide_String.
251
         ASF.Index("abcde", "  ")        /= 0     -- blank pattern.
252
      then
253
         Report.Failed("Incorrect result from Index, no pattern match");
254
      end if;
255
 
256
      -- Check that Pattern_Error is raised when the pattern is the
257
      -- null Wide_String.
258
      begin
259
         Location := ASF.Index(Source_String6,    -- "abcdefabcdef"
260
                               "",                -- null pattern Wide_String.
261
                               Ada.Strings.Forward);
262
         Report.Failed("Pattern_Error not raised by Index");
263
      exception
264
         when Ada.Strings.Pattern_Error => null;  -- OK, expected exception.
265
         when others                    =>
266
           Report.Failed("Incorrect exception raised by Index, null pattern");
267
      end;
268
 
269
      -- Use the search direction "backward" to locate the particular
270
      -- pattern within the source Wide_String.
271
 
272
      Location := ASF.Index(Source_String6,         -- "abcdefabcdef"
273
                            "de",                   -- slice 4..5, 10..11
274
                            Ada.Strings.Backward);  -- search from right end.
275
 
276
      if Location /= 10  then
277
         Report.Failed("Incorrect result from Index going Backward");
278
      end if;
279
 
280
 
281
 
282
      -- Function Index
283
      -- Use the version of Index that takes a Wide_Character_Mapping_Function
284
      -- parameter.
285
      -- Use the search directions Forward and Backward to locate the
286
      -- particular pattern wide string within the source wide string.
287
 
288
      Location := ASF.Index("akzqefakzqef",
289
                            "qzq",                  -- slice 8..10
290
                            Ada.Strings.Backward,
291
                            Map_Ptr);      -- perform 'a' to 'z', 'k' to 'q'
292
                                           -- translation.
293
      if Location /= 8  then
294
         Report.Failed
295
           ("Incorrect result from Index w/map ptr going Backward");
296
      end if;
297
 
298
      Location := ASF.Index("ddkkddakcdakdefcadckdfzaaqd",
299
                            "zq",                  -- slice 7..8
300
                            Ada.Strings.Forward,
301
                            Map_Ptr);      -- perform 'a' to 'z', 'k' to 'q'
302
                                           -- translation.
303
      if Location /= 7  then
304
         Report.Failed
305
           ("Incorrect result from Index w/map ptr going Forward");
306
      end if;
307
 
308
 
309
      if ASF.Index("aakkzq", "zq",   Ada.Strings.Forward,  Map_Ptr) /= 2 or
310
         ASF.Index("qzedka", "qz",   Ada.Strings.Backward, Map_Ptr) /= 5 or
311
         ASF.Index("zazaza", "zzzz", Ada.Strings.Backward, Map_Ptr) /= 3 or
312
         ASF.Index("kka",    "qqz",  Ada.Strings.Forward,  Map_Ptr) /= 1
313
      then
314
         Report.Failed("Incorrect result from Index w/map ptr");
315
      end if;
316
 
317
 
318
      -- Check when the pattern wide string is not found in the source.
319
 
320
      if ASF.Index("akzqef", "kzq",    Ada.Strings.Forward,  Map_Ptr) /= 0 or
321
         ASF.Index("abcde",  "abcdef", Ada.Strings.Backward, Map_Ptr) /= 0 or
322
         ASF.Index("xyz",    "akzde",  Ada.Strings.Backward, Map_Ptr) /= 0 or
323
         ASF.Index("",       "zq",     Ada.Strings.Forward,  Map_Ptr) /= 0 or
324
         ASF.Index("akcde",  "  ",     Ada.Strings.Backward, Map_Ptr) /= 0
325
      then
326
         Report.Failed
327
           ("Incorrect result from Index w/map ptr, no pattern match");
328
      end if;
329
 
330
      -- Check that Pattern_Error is raised when the pattern is a
331
      -- null Wide_String.
332
      begin
333
         Location := ASF.Index("akzqefakqzef",
334
                               "",                -- null pattern Wide_String.
335
                               Ada.Strings.Forward,
336
                               Map_Ptr);
337
         Report.Failed("Pattern_Error not raised by Index w/map ptr");
338
      exception
339
         when Ada.Strings.Pattern_Error => null;  -- OK, expected exception.
340
         when others                    =>
341
           Report.Failed
342
             ("Incorrect exception raised by Index w/map ptr, null pattern");
343
      end;
344
 
345
 
346
 
347
      -- Function Index
348
      -- Using the version of Index testing wide character set membership,
349
      -- check combinations of forward/backward, inside/outside parameter
350
      -- configurations.
351
 
352
      if ASF.Index(Source => Source_String1,              -- "abcde"
353
                   Set    => CD_Set,
354
                   Test   => Ada.Strings.Inside,
355
                   Going  => Ada.Strings.Forward) /= 3 or -- 'c' at pos 3.
356
         ASF.Index(Source_String6,                        -- "abcdefabcdef"
357
                   CD_Set,
358
                   Ada.Strings.Outside,
359
                   Ada.Strings.Backward)  /=  12  or   -- 'f' at position 12
360
         ASF.Index(Source_String6,                     -- "abcdefabcdef"
361
                   CD_Set,
362
                   Ada.Strings.Inside,
363
                   Ada.Strings.Backward)  /=   10  or  -- 'd' at position 10
364
         ASF.Index("cdcdcdcdacdcdcdcd",
365
                   CD_Set,
366
                   Ada.Strings.Outside,
367
                   Ada.Strings.Forward)   /=    9      -- 'a' at position 9
368
      then
369
         Report.Failed("Incorrect result from function Index for sets - 1");
370
      end if;
371
 
372
      -- Additional interesting uses/combinations using Index for sets.
373
 
374
      if ASF.Index("cd",                               -- same size, str-set
375
                   CD_Set,
376
                   Ada.Strings.Inside,
377
                   Ada.Strings.Forward)   /=    1  or  -- 'c' at position 1
378
         ASF.Index("abcd",                             -- same size, str-set,
379
                   Maps.To_Set("efgh"),                -- different contents.
380
                   Ada.Strings.Outside,
381
                   Ada.Strings.Forward)   /=    1  or
382
         ASF.Index("abccd",                            -- set > Wide_String
383
                   Maps.To_Set("acegik"),
384
                   Ada.Strings.Inside,
385
                   Ada.Strings.Backward)  /=    4  or  -- 'c' at position 4
386
         ASF.Index("abcde",
387
                   Maps.Null_Set)         /=    0  or
388
         ASF.Index("",                                 -- Null string.
389
                   CD_Set)                /=    0  or
390
         ASF.Index("abc ab",                           -- blank included
391
                   Maps.To_Set("e "),                  -- in Wide_String and
392
                   Ada.Strings.Inside,                 -- set.
393
                   Ada.Strings.Backward)  /=    4      -- blank in Wide_Str.
394
      then
395
         Report.Failed("Incorrect result from function Index for sets - 2");
396
      end if;
397
 
398
 
399
 
400
      -- Function Index_Non_Blank.
401
      -- (Other usage examples of this function found in CXA4013-14.)
402
 
403
 
404
      if ASF.Index_Non_Blank(Source => Source_String4,  -- "abcdefghij  "
405
                             Going  => Ada.Strings.Backward)  /= 10  or
406
         ASF.Index_Non_Blank("abc def ghi jkl  ",
407
                             Ada.Strings.Backward)            /= 15  or
408
         ASF.Index_Non_Blank("  abcdef")                      /=  3  or
409
         ASF.Index_Non_Blank("        ")                      /=  0
410
      then
411
          Report.Failed("Incorrect result from Index_Non_Blank");
412
      end if;
413
 
414
 
415
 
416
      -- Function Count
417
      -- (Other usage examples of this function found in CXA4013-14.)
418
 
419
      if ASF.Count("abababa",   "aba")            /=  2  or
420
         ASF.Count("abababa",   "ab" )            /=  3  or
421
         ASF.Count("babababa",  "ab")             /=  3  or
422
         ASF.Count("abaabaaba", "aba")            /=  3  or
423
         ASF.Count("xxxxxxxxxxxxxxxxxxxy", "xy")  /=  1  or
424
         ASF.Count("xxxxxxxxxxxxxxxxxxxx", "x")   /= 20
425
      then
426
         Report.Failed("Incorrect result from Function Count");
427
      end if;
428
 
429
      -- Determine the number of slices of Source that when mapped to a
430
      -- non-identity map, match the pattern Wide_String.
431
 
432
      Slice_Count := ASF.Count(Source_String6, -- "abcdefabcdef"
433
                               "xy",
434
                               CD_to_XY_Map);  -- maps 'c' to 'x', 'd' to 'y'
435
 
436
      if Slice_Count /= 2 then  -- two slices "xy" in "mapped" Source_String6
437
         Report.Failed("Incorrect result from Count with non-identity map");
438
      end if;
439
 
440
      -- If the pattern supplied to Function Count is the null Wide_String,
441
      -- then Pattern_Error is propagated.
442
      declare
443
         The_Null_Wide_String : constant Wide_String := "";
444
      begin
445
         Slice_Count := ASF.Count(Source_String6, The_Null_Wide_String);
446
         Report.Failed("Pattern_Error not raised by Function Count");
447
      exception
448
         when Ada.Strings.Pattern_Error => null;   -- OK
449
         when others =>
450
           Report.Failed("Incorrect exception from Count with null pattern");
451
      end;
452
 
453
 
454
 
455
 
456
      -- Function Count
457
      -- Use the version of Count that takes a Wide_Character_Mapping_Function
458
      -- value as the basis of its source mapping.
459
 
460
      if ASF.Count("akakaka",      "zqz", Map_Ptr)          /=  2  or
461
         ASF.Count("akakaka",      "qz",  Map_Ptr)          /=  3  or
462
         ASF.Count("kakakaka",     "q",   Map_Ptr)          /=  4  or
463
         ASF.Count("zzqaakzaqzzk", "zzq", Map_Ptr)          /=  4  or
464
         ASF.Count("   ",          "z",   Map_Ptr)          /=  0  or
465
         ASF.Count("",             "qz",  Map_Ptr)          /=  0  or
466
         ASF.Count("abbababab",    "zq",  Map_Ptr)          /=  0  or
467
         ASF.Count("aaaaaaaaaaaaaaaaaakk", "zqq", Map_Ptr)  /=  1  or
468
         ASF.Count("azaazaazzzaaaaazzzza", "z",   Map_Ptr)  /= 20
469
      then
470
         Report.Failed("Incorrect result from Function Count w/map ptr");
471
      end if;
472
 
473
      -- If the pattern supplied to Function Count is a null Wide_String,
474
      -- then Pattern_Error is propagated.
475
      declare
476
         The_Null_Wide_String : constant Wide_String := "";
477
      begin
478
         Slice_Count := ASF.Count(Source_String6,
479
                                  The_Null_Wide_String,
480
                                  Map_Ptr);
481
         Report.Failed
482
           ("Pattern_Error not raised by Function Count w/map ptr");
483
      exception
484
         when Ada.Strings.Pattern_Error => null;   -- OK
485
         when others =>
486
           Report.Failed
487
             ("Incorrect exception from Count w/map ptr, null pattern");
488
      end;
489
 
490
 
491
 
492
 
493
      -- Function Count returning the number of characters in a particular
494
      -- set that are found in source Wide_String.
495
 
496
      if ASF.Count(Source_String6, CD_Set) /=  4 or  -- 2 'c' and 'd' chars.
497
         ASF.Count("cddaccdaccdd", CD_Set) /= 10
498
      then
499
         Report.Failed("Incorrect result from Count with set");
500
      end if;
501
 
502
 
503
 
504
      -- Function Find_Token.
505
      -- (Other usage examples of this function found in CXA4013-14.)
506
 
507
      ASF.Find_Token(Source  => Source_String6,      -- First slice with no
508
                     Set     => ABCD_Set,            -- 'a', 'b', 'c', or 'd'
509
                     Test    => Ada.Strings.Outside, -- is "ef" at 5..6.
510
                     First   => Slice_Start,
511
                     Last    => Slice_End);
512
 
513
      if Slice_Start /= 5  or Slice_End /= 6 then
514
         Report.Failed("Incorrect result from Find_Token - 1");
515
      end if;
516
 
517
      -- If no appropriate slice is contained by the source Wide_String,
518
      -- then the value returned in Last is zero, and the value in First is
519
      -- Source'First.
520
 
521
      ASF.Find_Token(Source_String6,      -- "abcdefabcdef"
522
                     A_to_F_Set,          -- Set of characters 'a' thru 'f'.
523
                     Ada.Strings.Outside, -- No characters outside this set.
524
                     Slice_Start,
525
                     Slice_End);
526
 
527
      if Slice_Start /= Source_String6'First  or Slice_End /= 0 then
528
         Report.Failed("Incorrect result from Find_Token - 2");
529
      end if;
530
 
531
      -- Additional testing of Find_Token.
532
 
533
      ASF.Find_Token("eabcdabcddcab",
534
                     ABCD_Set,
535
                     Ada.Strings.Inside,
536
                     Slice_Start,
537
                     Slice_End);
538
 
539
      if Slice_Start /= 2  or Slice_End /= 13 then
540
         Report.Failed("Incorrect result from Find_Token - 3");
541
      end if;
542
 
543
      ASF.Find_Token("efghijklabcdabcd",
544
                     ABCD_Set,
545
                     Ada.Strings.Outside,
546
                     Slice_Start,
547
                     Slice_End);
548
 
549
      if Slice_Start /= 1  or Slice_End /= 8 then
550
         Report.Failed("Incorrect result from Find_Token - 4");
551
      end if;
552
 
553
      ASF.Find_Token("abcdefgabcdabcd",
554
                     ABCD_Set,
555
                     Ada.Strings.Outside,
556
                     Slice_Start,
557
                     Slice_End);
558
 
559
      if Slice_Start /= 5  or Slice_End /= 7 then
560
         Report.Failed("Incorrect result from Find_Token - 5");
561
      end if;
562
 
563
      ASF.Find_Token("abcdcbabcdcba",
564
                     ABCD_Set,
565
                     Ada.Strings.Inside,
566
                     Slice_Start,
567
                     Slice_End);
568
 
569
      if Slice_Start /= 1  or Slice_End /= 13 then
570
         Report.Failed("Incorrect result from Find_Token - 6");
571
      end if;
572
 
573
 
574
   exception
575
      when others => Report.Failed("Exception raised in Test_Block");
576
   end Test_Block;
577
 
578
   Report.Result;
579
 
580
end CXA4015;

powered by: WebSVN 2.1.0

© copyright 1999-2024 OpenCores.org, equivalent to Oliscience, all rights reserved. OpenCores®, registered trademark.