1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
|
#!./perl
# Add new tests to the end with format:
# ########
#
# # test description
# Test code
# EXPECT
# Warn or die msgs (if any) at - line 1234
#
chdir 't' if -d 't';
@INC = '../lib';
$ENV{PERL5LIB} = "../lib";
$|=1;
undef $/;
@prgs = split /^########\n/m, <DATA>;
require './test.pl';
plan(tests => scalar @prgs);
for (@prgs){
++$i;
my($prog,$expected) = split(/\nEXPECT\n/, $_, 2);
print("not ok $i # bad test format\n"), next
unless defined $expected;
my ($testname) = $prog =~ /^# (.*)\n/m;
$testname ||= '';
$TODO = $testname =~ s/^TODO //;
$results =~ s/\n+$//;
$expected =~ s/\n+$//;
fresh_perl_is($prog, $expected, {}, $testname);
}
__END__
# standard behaviour, without any extra references
use Tie::Hash ;
tie %h, Tie::StdHash;
untie %h;
EXPECT
########
# standard behaviour, without any extra references
use Tie::Hash ;
{package Tie::HashUntie;
use base 'Tie::StdHash';
sub UNTIE
{
warn "Untied\n";
}
}
tie %h, Tie::HashUntie;
untie %h;
EXPECT
Untied
########
# standard behaviour, with 1 extra reference
use Tie::Hash ;
$a = tie %h, Tie::StdHash;
untie %h;
EXPECT
########
# standard behaviour, with 1 extra reference via tied
use Tie::Hash ;
tie %h, Tie::StdHash;
$a = tied %h;
untie %h;
EXPECT
########
# standard behaviour, with 1 extra reference which is destroyed
use Tie::Hash ;
$a = tie %h, Tie::StdHash;
$a = 0 ;
untie %h;
EXPECT
########
# standard behaviour, with 1 extra reference via tied which is destroyed
use Tie::Hash ;
tie %h, Tie::StdHash;
$a = tied %h;
$a = 0 ;
untie %h;
EXPECT
########
# strict behaviour, without any extra references
use warnings 'untie';
use Tie::Hash ;
tie %h, Tie::StdHash;
untie %h;
EXPECT
########
# strict behaviour, with 1 extra references generating an error
use warnings 'untie';
use Tie::Hash ;
$a = tie %h, Tie::StdHash;
untie %h;
EXPECT
untie attempted while 1 inner references still exist at - line 6.
########
# strict behaviour, with 1 extra references via tied generating an error
use warnings 'untie';
use Tie::Hash ;
tie %h, Tie::StdHash;
$a = tied %h;
untie %h;
EXPECT
untie attempted while 1 inner references still exist at - line 7.
########
# strict behaviour, with 1 extra references which are destroyed
use warnings 'untie';
use Tie::Hash ;
$a = tie %h, Tie::StdHash;
$a = 0 ;
untie %h;
EXPECT
########
# strict behaviour, with extra 1 references via tied which are destroyed
use warnings 'untie';
use Tie::Hash ;
tie %h, Tie::StdHash;
$a = tied %h;
$a = 0 ;
untie %h;
EXPECT
########
# strict error behaviour, with 2 extra references
use warnings 'untie';
use Tie::Hash ;
$a = tie %h, Tie::StdHash;
$b = tied %h ;
untie %h;
EXPECT
untie attempted while 2 inner references still exist at - line 7.
########
# strict behaviour, check scope of strictness.
no warnings 'untie';
use Tie::Hash ;
$A = tie %H, Tie::StdHash;
$C = $B = tied %H ;
{
use warnings 'untie';
use Tie::Hash ;
tie %h, Tie::StdHash;
untie %h;
}
untie %H;
EXPECT
########
# Forbidden aggregate self-ties
sub Self::TIEHASH { bless $_[1], $_[0] }
{
my %c;
tie %c, 'Self', \%c;
}
EXPECT
Self-ties of arrays and hashes are not supported at - line 6.
########
# Allowed scalar self-ties
my $destroyed = 0;
sub Self::TIESCALAR { bless $_[1], $_[0] }
sub Self::DESTROY { $destroyed = 1; }
{
my $c = 42;
tie $c, 'Self', \$c;
}
die "self-tied scalar not DESTROYed" unless $destroyed == 1;
EXPECT
########
# Allowed glob self-ties
my $destroyed = 0;
my $printed = 0;
sub Self2::TIEHANDLE { bless $_[1], $_[0] }
sub Self2::DESTROY { $destroyed = 1; }
sub Self2::PRINT { $printed = 1; }
{
use Symbol;
my $c = gensym;
tie *$c, 'Self2', $c;
print $c 'Hello';
}
die "self-tied glob not PRINTed" unless $printed == 1;
die "self-tied glob not DESTROYed" unless $destroyed == 1;
EXPECT
########
# Allowed IO self-ties
my $destroyed = 0;
sub Self3::TIEHANDLE { bless $_[1], $_[0] }
sub Self3::DESTROY { $destroyed = 1; }
sub Self3::PRINT { $printed = 1; }
{
use Symbol 'geniosym';
my $c = geniosym;
tie *$c, 'Self3', $c;
print $c 'Hello';
}
die "self-tied IO not PRINTed" unless $printed == 1;
die "self-tied IO not DESTROYed" unless $destroyed == 1;
EXPECT
########
# TODO IO "self-tie" via TEMP glob
my $destroyed = 0;
sub Self3::TIEHANDLE { bless $_[1], $_[0] }
sub Self3::DESTROY { $destroyed = 1; }
sub Self3::PRINT { $printed = 1; }
{
use Symbol 'geniosym';
my $c = geniosym;
tie *$c, 'Self3', \*$c;
print $c 'Hello';
}
die "IO tied to TEMP glob not PRINTed" unless $printed == 1;
die "IO tied to TEMP glob not DESTROYed" unless $destroyed == 1;
EXPECT
########
# Interaction of tie and vec
my ($a, $b);
use Tie::Scalar;
tie $a,Tie::StdScalar or die;
vec($b,1,1)=1;
$a = $b;
vec($a,1,1)=0;
vec($b,1,1)=0;
die unless $a eq $b;
EXPECT
########
# correct unlocalisation of tied hashes (patch #16431)
use Tie::Hash ;
tie %tied, Tie::StdHash;
{ local $hash{'foo'} } warn "plain hash bad unlocalize" if exists $hash{'foo'};
{ local $tied{'foo'} } warn "tied hash bad unlocalize" if exists $tied{'foo'};
{ local $ENV{'foo'} } warn "%ENV bad unlocalize" if exists $ENV{'foo'};
EXPECT
########
# An attempt at lvalueable barewords broke this
tie FH, 'main';
EXPECT
Can't modify constant item in tie at - line 3, near "'main';"
Execution of - aborted due to compilation errors.
########
# localizing tied hash slices
$ENV{FooA} = 1;
$ENV{FooB} = 2;
print exists $ENV{FooA} ? 1 : 0, "\n";
print exists $ENV{FooB} ? 2 : 0, "\n";
print exists $ENV{FooC} ? 3 : 0, "\n";
{
local @ENV{qw(FooA FooC)};
print exists $ENV{FooA} ? 4 : 0, "\n";
print exists $ENV{FooB} ? 5 : 0, "\n";
print exists $ENV{FooC} ? 6 : 0, "\n";
}
print exists $ENV{FooA} ? 7 : 0, "\n";
print exists $ENV{FooB} ? 8 : 0, "\n";
print exists $ENV{FooC} ? 9 : 0, "\n"; # this should not exist
EXPECT
1
2
0
4
5
6
7
8
0
########
#
# FETCH freeing tie'd SV
sub TIESCALAR { bless [] }
sub FETCH { *a = \1; 1 }
tie $a, 'main';
print $a;
EXPECT
########
# [20020716.007] - nested FETCHES
sub F1::TIEARRAY { bless [], 'F1' }
sub F1::FETCH { 1 }
my @f1;
tie @f1, 'F1';
sub F2::TIEARRAY { bless [2], 'F2' }
sub F2::FETCH { my $self = shift; my $x = $f1[3]; $self }
my @f2;
tie @f2, 'F2';
print $f2[4][0],"\n";
sub F3::TIEHASH { bless [], 'F3' }
sub F3::FETCH { 1 }
my %f3;
tie %f3, 'F3';
sub F4::TIEHASH { bless [3], 'F4' }
sub F4::FETCH { my $self = shift; my $x = $f3{3}; $self }
my %f4;
tie %f4, 'F4';
print $f4{'foo'}[0],"\n";
EXPECT
2
3
########
# test untie() from within FETCH
package Foo;
sub TIESCALAR { my $pkg = shift; return bless [@_], $pkg; }
sub FETCH {
my $self = shift;
my ($obj, $field) = @$self;
untie $obj->{$field};
$obj->{$field} = "Bar";
}
package main;
tie $a->{foo}, "Foo", $a, "foo";
$a->{foo}; # access once
# the hash element should not be tied anymore
print defined tied $a->{foo} ? "not ok" : "ok";
EXPECT
ok
########
# the tmps returned by FETCH should appear to be SCALAR
# (even though they are now implemented using PVLVs.)
package X;
sub TIEHASH { bless {} }
sub TIEARRAY { bless {} }
sub FETCH {1}
my (%h, @a);
tie %h, 'X';
tie @a, 'X';
my $r1 = \$h{1};
my $r2 = \$a[0];
my $s = "$r1 ". ref($r1) . " $r2 " . ref($r2);
$s=~ s/\(0x\w+\)//g;
print $s, "\n";
EXPECT
SCALAR SCALAR SCALAR SCALAR
########
# [perl #23287] segfault in untie
sub TIESCALAR { bless $_[1], $_[0] }
my $var;
tie $var, 'main', \$var;
untie $var;
EXPECT
########
# Test case from perlmonks by runrig
# http://www.perlmonks.org/index.pl?node_id=273490
# "Here is what I tried. I think its similar to what you've tried
# above. Its odd but convienient that after untie'ing you are left with
# a variable that has the same value as was last returned from
# FETCH. (At least on my perl v5.6.1). So you don't need to pass a
# reference to the variable in order to set it after the untie (here it
# is accessed through a closure)."
use strict;
use warnings;
package MyTied;
sub TIESCALAR {
my ($class,$code) = @_;
bless $code, $class;
}
sub FETCH {
my $self = shift;
print "Untie\n";
$self->();
}
package main;
my $var;
tie $var, 'MyTied', sub { untie $var; 4 };
print "One\n";
print "$var\n";
print "Two\n";
print "$var\n";
print "Three\n";
print "$var\n";
EXPECT
One
Untie
4
Two
4
Three
4
########
# [perl #22297] cannot untie scalar from within tied FETCH
my $counter = 0;
my $x = 7;
my $ref = \$x;
tie $x, 'Overlay', $ref, $x;
my $y;
$y = $x;
$y = $x;
$y = $x;
$y = $x;
#print "WILL EXTERNAL UNTIE $ref\n";
untie $$ref;
$y = $x;
$y = $x;
$y = $x;
$y = $x;
#print "counter = $counter\n";
print (($counter == 1) ? "ok\n" : "not ok\n");
package Overlay;
sub TIESCALAR
{
my $pkg = shift;
my ($ref, $val) = @_;
return bless [ $ref, $val ], $pkg;
}
sub FETCH
{
my $self = shift;
my ($ref, $val) = @$self;
#print "WILL INTERNAL UNITE $ref\n";
$counter++;
untie $$ref;
return $val;
}
EXPECT
ok
########
# TODO [perl #948] cannot meaningfully tie $,
package TieDollarComma;
sub TIESCALAR {
my $pkg = shift;
return bless \my $x, $pkg;
}
sub STORE {
my $self = shift;
$$self = shift;
print "STORE set '$$self'\n";
}
sub FETCH {
my $self = shift;
print "FETCH\n";
return $$self;
}
package main;
tie $,, 'TieDollarComma';
$, = 'BOBBINS';
print "join", "things", "up\n";
EXPECT
STORE set 'BOBBINS'
FETCH
FETCH
joinBOBBINSthingsBOBBINSup
########
# test SCALAR method
package TieScalar;
sub TIEHASH {
my $pkg = shift;
bless { } => $pkg;
}
sub STORE {
$_[0]->{$_[1]} = $_[2];
}
sub FETCH {
$_[0]->{$_[1]}
}
sub CLEAR {
%{ $_[0] } = ();
}
sub SCALAR {
print "SCALAR\n";
return 0 if ! keys %{$_[0]};
sprintf "%i/%i", scalar keys %{$_[0]}, scalar keys %{$_[0]};
}
package main;
tie my %h => "TieScalar";
$h{key1} = "val1";
$h{key2} = "val2";
print scalar %h, "\n";
%h = ();
print scalar %h, "\n";
EXPECT
SCALAR
2/2
SCALAR
0
########
# test scalar on tied hash when no SCALAR method has been given
package TieScalar;
sub TIEHASH {
my $pkg = shift;
bless { } => $pkg;
}
sub STORE {
$_[0]->{$_[1]} = $_[2];
}
sub FETCH {
$_[0]->{$_[1]}
}
sub CLEAR {
%{ $_[0] } = ();
}
sub FIRSTKEY {
my $a = keys %{ $_[0] };
print "FIRSTKEY\n";
each %{ $_[0] };
}
package main;
tie my %h => "TieScalar";
if (!%h) {
print "empty\n";
} else {
print "not empty\n";
}
$h{key1} = "val1";
print "not empty\n" if %h;
print "not empty\n" if %h;
print "-->\n";
my ($k,$v) = each %h;
print "<--\n";
print "not empty\n" if %h;
%h = ();
print "empty\n" if ! %h;
EXPECT
FIRSTKEY
empty
FIRSTKEY
not empty
FIRSTKEY
not empty
-->
FIRSTKEY
<--
not empty
FIRSTKEY
empty
|