-
Notifications
You must be signed in to change notification settings - Fork 7.8k
/
Copy pathspl_iterators.c
3315 lines (2770 loc) · 96.2 KB
/
spl_iterators.c
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
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
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
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
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
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
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
/*
+----------------------------------------------------------------------+
| Copyright (c) The PHP Group |
+----------------------------------------------------------------------+
| This source file is subject to version 3.01 of the PHP license, |
| that is bundled with this package in the file LICENSE, and is |
| available through the world-wide-web at the following url: |
| https://www.php.net/license/3_01.txt |
| If you did not receive a copy of the PHP license and are unable to |
| obtain it through the world-wide-web, please send a note to |
| license@php.net so we can mail you a copy immediately. |
+----------------------------------------------------------------------+
| Authors: Marcus Boerger <helly@php.net> |
+----------------------------------------------------------------------+
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include "php.h"
#include "php_ini.h"
#include "ext/standard/info.h"
#include "zend_exceptions.h"
#include "zend_interfaces.h"
#include "ext/pcre/php_pcre.h"
#include "php_spl.h"
#include "spl_functions.h"
#include "spl_engine.h"
#include "spl_iterators.h"
#include "spl_iterators_arginfo.h"
#include "spl_directory.h"
#include "spl_array.h"
#include "spl_exceptions.h"
#include "zend_smart_str.h"
#ifdef accept
#undef accept
#endif
PHPAPI zend_class_entry *spl_ce_RecursiveIterator;
PHPAPI zend_class_entry *spl_ce_RecursiveIteratorIterator;
PHPAPI zend_class_entry *spl_ce_FilterIterator;
PHPAPI zend_class_entry *spl_ce_CallbackFilterIterator;
PHPAPI zend_class_entry *spl_ce_RecursiveFilterIterator;
PHPAPI zend_class_entry *spl_ce_RecursiveCallbackFilterIterator;
PHPAPI zend_class_entry *spl_ce_ParentIterator;
PHPAPI zend_class_entry *spl_ce_SeekableIterator;
PHPAPI zend_class_entry *spl_ce_LimitIterator;
PHPAPI zend_class_entry *spl_ce_CachingIterator;
PHPAPI zend_class_entry *spl_ce_RecursiveCachingIterator;
PHPAPI zend_class_entry *spl_ce_OuterIterator;
PHPAPI zend_class_entry *spl_ce_IteratorIterator;
PHPAPI zend_class_entry *spl_ce_NoRewindIterator;
PHPAPI zend_class_entry *spl_ce_InfiniteIterator;
PHPAPI zend_class_entry *spl_ce_EmptyIterator;
PHPAPI zend_class_entry *spl_ce_AppendIterator;
PHPAPI zend_class_entry *spl_ce_RegexIterator;
PHPAPI zend_class_entry *spl_ce_RecursiveRegexIterator;
PHPAPI zend_class_entry *spl_ce_RecursiveTreeIterator;
typedef enum {
RS_NEXT = 0,
RS_TEST = 1,
RS_SELF = 2,
RS_CHILD = 3,
RS_START = 4
} RecursiveIteratorState;
typedef struct _spl_sub_iterator {
zend_object_iterator *iterator;
zval zobject;
zend_class_entry *ce;
RecursiveIteratorState state;
zend_function *haschildren;
zend_function *getchildren;
} spl_sub_iterator;
typedef struct _spl_recursive_it_object {
spl_sub_iterator *iterators;
int level;
RecursiveIteratorMode mode;
int flags;
int max_depth;
bool in_iteration;
zend_function *beginIteration;
zend_function *endIteration;
zend_function *callHasChildren;
zend_function *callGetChildren;
zend_function *beginChildren;
zend_function *endChildren;
zend_function *nextElement;
zend_class_entry *ce;
zend_string *prefix[6];
zend_string *postfix[1];
zend_object std;
} spl_recursive_it_object;
typedef struct _spl_recursive_it_iterator {
zend_object_iterator intern;
} spl_recursive_it_iterator;
typedef struct _spl_dual_it_object {
struct {
zval zobject;
zend_class_entry *ce;
zend_object *object;
zend_object_iterator *iterator;
} inner;
struct {
zval data;
zval key;
zend_long pos;
} current;
dual_it_type dit_type;
union {
struct {
zend_long offset;
zend_long count;
} limit;
struct {
zend_long flags; /* CIT_* */
zend_string *zstr;
zval zchildren;
zval zcache;
} caching;
struct {
zval zarrayit;
zend_object_iterator *iterator;
} append;
struct {
zend_long flags;
zend_long preg_flags;
pcre_cache_entry *pce;
zend_string *regex;
regex_mode mode;
int use_flags;
} regex;
zend_fcall_info_cache callback_filter;
} u;
zend_object std;
} spl_dual_it_object;
static zend_object_handlers spl_handlers_rec_it_it;
static zend_object_handlers spl_handlers_dual_it;
static inline spl_recursive_it_object *spl_recursive_it_from_obj(zend_object *obj) /* {{{ */ {
return (spl_recursive_it_object*)((char*)(obj) - XtOffsetOf(spl_recursive_it_object, std));
}
/* }}} */
#define Z_SPLRECURSIVE_IT_P(zv) spl_recursive_it_from_obj(Z_OBJ_P((zv)))
static inline spl_dual_it_object *spl_dual_it_from_obj(zend_object *obj) /* {{{ */ {
return (spl_dual_it_object*)((char*)(obj) - XtOffsetOf(spl_dual_it_object, std));
} /* }}} */
#define Z_SPLDUAL_IT_P(zv) spl_dual_it_from_obj(Z_OBJ_P((zv)))
#define SPL_FETCH_AND_CHECK_DUAL_IT(var, objzval) \
do { \
spl_dual_it_object *it = Z_SPLDUAL_IT_P(objzval); \
if (it->dit_type == DIT_Unknown) { \
zend_throw_error(NULL, "The object is in an invalid state as the parent constructor was not called"); \
RETURN_THROWS(); \
} \
(var) = it; \
} while (0)
#define SPL_FETCH_SUB_ELEMENT(var, object, element) \
do { \
if(!(object)->iterators) { \
zend_throw_error(NULL, "The object is in an invalid state as the parent constructor was not called"); \
return; \
} \
(var) = (object)->iterators[(object)->level].element; \
} while (0)
#define SPL_FETCH_SUB_ELEMENT_ADDR(var, object, element) \
do { \
if(!(object)->iterators) { \
zend_throw_error(NULL, "The object is in an invalid state as the parent constructor was not called"); \
RETURN_THROWS(); \
} \
(var) = &(object)->iterators[(object)->level].element; \
} while (0)
#define SPL_FETCH_SUB_ITERATOR(var, object) SPL_FETCH_SUB_ELEMENT(var, object, iterator)
static void spl_recursive_it_dtor(zend_object_iterator *_iter)
{
spl_recursive_it_iterator *iter = (spl_recursive_it_iterator*)_iter;
spl_recursive_it_object *object = Z_SPLRECURSIVE_IT_P(&iter->intern.data);
zend_object_iterator *sub_iter;
if (object->iterators) {
while (object->level > 0) {
if (!Z_ISUNDEF(object->iterators[object->level].zobject)) {
sub_iter = object->iterators[object->level].iterator;
zend_iterator_dtor(sub_iter);
zval_ptr_dtor(&object->iterators[object->level].zobject);
}
object->level--;
}
object->iterators = erealloc(object->iterators, sizeof(spl_sub_iterator));
object->level = 0;
}
zval_ptr_dtor(&iter->intern.data);
}
static int spl_recursive_it_valid_ex(spl_recursive_it_object *object, zval *zthis)
{
zend_object_iterator *sub_iter;
int level = object->level;
if(!object->iterators) {
return FAILURE;
}
while (level >=0) {
sub_iter = object->iterators[level].iterator;
if (sub_iter->funcs->valid(sub_iter) == SUCCESS) {
return SUCCESS;
}
level--;
}
if (object->endIteration && object->in_iteration) {
zend_call_method_with_0_params(Z_OBJ_P(zthis), object->ce, &object->endIteration, "endIteration", NULL);
}
object->in_iteration = 0;
return FAILURE;
}
static int spl_recursive_it_valid(zend_object_iterator *iter)
{
return spl_recursive_it_valid_ex(Z_SPLRECURSIVE_IT_P(&iter->data), &iter->data);
}
static zval *spl_recursive_it_get_current_data(zend_object_iterator *iter)
{
spl_recursive_it_object *object = Z_SPLRECURSIVE_IT_P(&iter->data);
zend_object_iterator *sub_iter = object->iterators[object->level].iterator;
return sub_iter->funcs->get_current_data(sub_iter);
}
static void spl_recursive_it_get_current_key(zend_object_iterator *iter, zval *key)
{
spl_recursive_it_object *object = Z_SPLRECURSIVE_IT_P(&iter->data);
zend_object_iterator *sub_iter = object->iterators[object->level].iterator;
if (sub_iter->funcs->get_current_key) {
sub_iter->funcs->get_current_key(sub_iter, key);
} else {
ZVAL_LONG(key, iter->index);
}
}
static void spl_recursive_it_move_forward_ex(spl_recursive_it_object *object, zval *zthis)
{
zend_object_iterator *iterator;
zend_class_entry *ce;
zval retval, child;
zend_object_iterator *sub_iter;
int has_children;
SPL_FETCH_SUB_ITERATOR(iterator, object);
while (!EG(exception)) {
next_step:
iterator = object->iterators[object->level].iterator;
switch (object->iterators[object->level].state) {
case RS_NEXT:
iterator->funcs->move_forward(iterator);
if (EG(exception)) {
if (!(object->flags & RIT_CATCH_GET_CHILD)) {
return;
} else {
zend_clear_exception();
}
}
ZEND_FALLTHROUGH;
case RS_START:
if (iterator->funcs->valid(iterator) == FAILURE) {
break;
}
object->iterators[object->level].state = RS_TEST;
/* break; */
/* TODO: Check this is correct */
ZEND_FALLTHROUGH;
case RS_TEST:
if (object->callHasChildren) {
zend_call_method_with_0_params(Z_OBJ_P(zthis), object->ce, &object->callHasChildren, "callHasChildren", &retval);
} else {
zend_class_entry *ce = object->iterators[object->level].ce;
zend_object *obj = Z_OBJ(object->iterators[object->level].zobject);
zend_function **cache = &object->iterators[object->level].haschildren;
zend_call_method_with_0_params(obj, ce, cache, "haschildren", &retval);
}
if (EG(exception)) {
if (!(object->flags & RIT_CATCH_GET_CHILD)) {
object->iterators[object->level].state = RS_NEXT;
return;
} else {
zend_clear_exception();
}
}
if (Z_TYPE(retval) != IS_UNDEF) {
has_children = zend_is_true(&retval);
zval_ptr_dtor(&retval);
if (has_children) {
if (object->max_depth == -1 || object->max_depth > object->level) {
switch (object->mode) {
case RIT_LEAVES_ONLY:
case RIT_CHILD_FIRST:
object->iterators[object->level].state = RS_CHILD;
goto next_step;
case RIT_SELF_FIRST:
object->iterators[object->level].state = RS_SELF;
goto next_step;
}
} else {
/* do not recurse into */
if (object->mode == RIT_LEAVES_ONLY) {
/* this is not a leave, so skip it */
object->iterators[object->level].state = RS_NEXT;
goto next_step;
}
}
}
}
if (object->nextElement) {
zend_call_method_with_0_params(Z_OBJ_P(zthis), object->ce, &object->nextElement, "nextelement", NULL);
}
object->iterators[object->level].state = RS_NEXT;
if (EG(exception)) {
if (!(object->flags & RIT_CATCH_GET_CHILD)) {
return;
} else {
zend_clear_exception();
}
}
return /* self */;
case RS_SELF:
if (object->nextElement && (object->mode == RIT_SELF_FIRST || object->mode == RIT_CHILD_FIRST)) {
zend_call_method_with_0_params(Z_OBJ_P(zthis), object->ce, &object->nextElement, "nextelement", NULL);
}
if (object->mode == RIT_SELF_FIRST) {
object->iterators[object->level].state = RS_CHILD;
} else {
object->iterators[object->level].state = RS_NEXT;
}
return /* self */;
case RS_CHILD:
if (object->callGetChildren) {
zend_call_method_with_0_params(Z_OBJ_P(zthis), object->ce, &object->callGetChildren, "callGetChildren", &child);
} else {
zend_class_entry *ce = object->iterators[object->level].ce;
zend_object *obj = Z_OBJ(object->iterators[object->level].zobject);
zend_function **cache = &object->iterators[object->level].getchildren;
zend_call_method_with_0_params(obj, ce, cache, "getchildren", &child);
}
if (EG(exception)) {
if (!(object->flags & RIT_CATCH_GET_CHILD)) {
return;
} else {
zend_clear_exception();
zval_ptr_dtor(&child);
object->iterators[object->level].state = RS_NEXT;
goto next_step;
}
}
if (Z_TYPE(child) == IS_UNDEF || Z_TYPE(child) != IS_OBJECT ||
!((ce = Z_OBJCE(child)) && instanceof_function(ce, spl_ce_RecursiveIterator))) {
zval_ptr_dtor(&child);
zend_throw_exception(spl_ce_UnexpectedValueException, "Objects returned by RecursiveIterator::getChildren() must implement RecursiveIterator", 0);
return;
}
if (object->mode == RIT_CHILD_FIRST) {
object->iterators[object->level].state = RS_SELF;
} else {
object->iterators[object->level].state = RS_NEXT;
}
object->iterators = erealloc(object->iterators, sizeof(spl_sub_iterator) * (++object->level+1));
sub_iter = ce->get_iterator(ce, &child, 0);
ZVAL_COPY_VALUE(&object->iterators[object->level].zobject, &child);
object->iterators[object->level].iterator = sub_iter;
object->iterators[object->level].ce = ce;
object->iterators[object->level].state = RS_START;
if (object->level > 0
&& object->iterators[object->level - 1].ce == 0) {
object->iterators[object->level].haschildren =
object->iterators[object->level - 1].haschildren;
object->iterators[object->level].getchildren =
object->iterators[object->level - 1].getchildren;
} else {
object->iterators[object->level].haschildren = NULL;
object->iterators[object->level].getchildren = NULL;
}
if (sub_iter->funcs->rewind) {
sub_iter->funcs->rewind(sub_iter);
}
if (object->beginChildren) {
zend_call_method_with_0_params(Z_OBJ_P(zthis), object->ce, &object->beginChildren, "beginchildren", NULL);
if (EG(exception)) {
if (!(object->flags & RIT_CATCH_GET_CHILD)) {
return;
} else {
zend_clear_exception();
}
}
}
goto next_step;
}
/* no more elements */
if (object->level > 0) {
if (object->endChildren) {
zend_call_method_with_0_params(Z_OBJ_P(zthis), object->ce, &object->endChildren, "endchildren", NULL);
if (EG(exception)) {
if (!(object->flags & RIT_CATCH_GET_CHILD)) {
return;
} else {
zend_clear_exception();
}
}
}
if (object->level > 0) {
zval garbage;
ZVAL_COPY_VALUE(&garbage, &object->iterators[object->level].zobject);
ZVAL_UNDEF(&object->iterators[object->level].zobject);
zval_ptr_dtor(&garbage);
zend_iterator_dtor(iterator);
object->level--;
}
} else {
return; /* done completeley */
}
}
}
static void spl_recursive_it_rewind_ex(spl_recursive_it_object *object, zval *zthis)
{
zend_object_iterator *sub_iter;
SPL_FETCH_SUB_ITERATOR(sub_iter, object);
while (object->level) {
sub_iter = object->iterators[object->level].iterator;
zend_iterator_dtor(sub_iter);
zval_ptr_dtor(&object->iterators[object->level--].zobject);
if (!EG(exception) && (!object->endChildren || object->endChildren->common.scope != spl_ce_RecursiveIteratorIterator)) {
zend_call_method_with_0_params(Z_OBJ_P(zthis), object->ce, &object->endChildren, "endchildren", NULL);
}
}
object->iterators = erealloc(object->iterators, sizeof(spl_sub_iterator));
object->iterators[0].state = RS_START;
sub_iter = object->iterators[0].iterator;
if (sub_iter->funcs->rewind) {
sub_iter->funcs->rewind(sub_iter);
}
if (!EG(exception) && object->beginIteration && !object->in_iteration) {
zend_call_method_with_0_params(Z_OBJ_P(zthis), object->ce, &object->beginIteration, "beginIteration", NULL);
}
object->in_iteration = 1;
spl_recursive_it_move_forward_ex(object, zthis);
}
static void spl_recursive_it_move_forward(zend_object_iterator *iter)
{
spl_recursive_it_move_forward_ex(Z_SPLRECURSIVE_IT_P(&iter->data), &iter->data);
}
static void spl_recursive_it_rewind(zend_object_iterator *iter)
{
spl_recursive_it_rewind_ex(Z_SPLRECURSIVE_IT_P(&iter->data), &iter->data);
}
static const zend_object_iterator_funcs spl_recursive_it_iterator_funcs = {
spl_recursive_it_dtor,
spl_recursive_it_valid,
spl_recursive_it_get_current_data,
spl_recursive_it_get_current_key,
spl_recursive_it_move_forward,
spl_recursive_it_rewind,
NULL,
NULL, /* get_gc */
};
static zend_object_iterator *spl_recursive_it_get_iterator(zend_class_entry *ce, zval *zobject, int by_ref)
{
if (by_ref) {
zend_throw_error(NULL, "An iterator cannot be used with foreach by reference");
return NULL;
}
spl_recursive_it_object *object = Z_SPLRECURSIVE_IT_P(zobject);
if (object->iterators == NULL) {
zend_throw_error(NULL, "Object is not initialized");
return NULL;
}
spl_recursive_it_iterator *iterator = emalloc(sizeof(spl_recursive_it_iterator));
zend_iterator_init((zend_object_iterator*)iterator);
ZVAL_OBJ_COPY(&iterator->intern.data, Z_OBJ_P(zobject));
iterator->intern.funcs = &spl_recursive_it_iterator_funcs;
return (zend_object_iterator*)iterator;
}
static zend_result spl_get_iterator_from_aggregate(zval *retval, zend_class_entry *ce, zend_object *obj) {
zend_function **getiterator_cache =
ce->iterator_funcs_ptr ? &ce->iterator_funcs_ptr->zf_new_iterator : NULL;
zend_call_method_with_0_params(obj, ce, getiterator_cache, "getiterator", retval);
if (EG(exception)) {
return FAILURE;
}
if (Z_TYPE_P(retval) != IS_OBJECT
|| !instanceof_function(Z_OBJCE_P(retval), zend_ce_traversable)) {
zend_throw_exception_ex(spl_ce_LogicException, 0,
"%s::getIterator() must return an object that implements Traversable",
ZSTR_VAL(ce->name));
zval_ptr_dtor(retval);
return FAILURE;
}
return SUCCESS;
}
static void spl_recursive_it_it_construct(INTERNAL_FUNCTION_PARAMETERS, zend_class_entry *ce_base, zend_class_entry *ce_inner, recursive_it_it_type rit_type)
{
zval *object = ZEND_THIS;
spl_recursive_it_object *intern;
zval *iterator;
zend_class_entry *ce_iterator;
zend_long mode, flags;
zval caching_it, aggregate_retval;
switch (rit_type) {
case RIT_RecursiveTreeIterator: {
zval caching_it_flags;
zend_long user_caching_it_flags = CIT_CATCH_GET_CHILD;
mode = RIT_SELF_FIRST;
flags = RTIT_BYPASS_KEY;
if (zend_parse_parameters(ZEND_NUM_ARGS(), "o|lll", &iterator, &flags, &user_caching_it_flags, &mode) == FAILURE) {
RETURN_THROWS();
}
if (instanceof_function(Z_OBJCE_P(iterator), zend_ce_aggregate)) {
if (spl_get_iterator_from_aggregate(
&aggregate_retval, Z_OBJCE_P(iterator), Z_OBJ_P(iterator)) == FAILURE) {
RETURN_THROWS();
}
iterator = &aggregate_retval;
} else {
Z_ADDREF_P(iterator);
}
ZVAL_LONG(&caching_it_flags, user_caching_it_flags);
spl_instantiate_arg_ex2(spl_ce_RecursiveCachingIterator, &caching_it, iterator, &caching_it_flags);
zval_ptr_dtor(&caching_it_flags);
zval_ptr_dtor(iterator);
iterator = &caching_it;
break;
}
case RIT_RecursiveIteratorIterator:
default: {
mode = RIT_LEAVES_ONLY;
flags = 0;
if (zend_parse_parameters(ZEND_NUM_ARGS(), "o|ll", &iterator, &mode, &flags) == FAILURE) {
RETURN_THROWS();
}
if (instanceof_function(Z_OBJCE_P(iterator), zend_ce_aggregate)) {
if (spl_get_iterator_from_aggregate(
&aggregate_retval, Z_OBJCE_P(iterator), Z_OBJ_P(iterator)) == FAILURE) {
RETURN_THROWS();
}
iterator = &aggregate_retval;
} else {
Z_ADDREF_P(iterator);
}
break;
}
}
if (!instanceof_function(Z_OBJCE_P(iterator), spl_ce_RecursiveIterator)) {
if (iterator) {
zval_ptr_dtor(iterator);
}
zend_throw_exception(spl_ce_InvalidArgumentException, "An instance of RecursiveIterator or IteratorAggregate creating it is required", 0);
return;
}
intern = Z_SPLRECURSIVE_IT_P(object);
intern->iterators = emalloc(sizeof(spl_sub_iterator));
intern->level = 0;
intern->mode = mode;
intern->flags = (int)flags;
intern->max_depth = -1;
intern->in_iteration = 0;
intern->ce = Z_OBJCE_P(object);
intern->beginIteration = zend_hash_str_find_ptr(&intern->ce->function_table, "beginiteration", sizeof("beginiteration") - 1);
if (intern->beginIteration->common.scope == ce_base) {
intern->beginIteration = NULL;
}
intern->endIteration = zend_hash_str_find_ptr(&intern->ce->function_table, "enditeration", sizeof("enditeration") - 1);
if (intern->endIteration->common.scope == ce_base) {
intern->endIteration = NULL;
}
intern->callHasChildren = zend_hash_str_find_ptr(&intern->ce->function_table, "callhaschildren", sizeof("callHasChildren") - 1);
if (intern->callHasChildren->common.scope == ce_base) {
intern->callHasChildren = NULL;
}
intern->callGetChildren = zend_hash_str_find_ptr(&intern->ce->function_table, "callgetchildren", sizeof("callGetChildren") - 1);
if (intern->callGetChildren->common.scope == ce_base) {
intern->callGetChildren = NULL;
}
intern->beginChildren = zend_hash_str_find_ptr(&intern->ce->function_table, "beginchildren", sizeof("beginchildren") - 1);
if (intern->beginChildren->common.scope == ce_base) {
intern->beginChildren = NULL;
}
intern->endChildren = zend_hash_str_find_ptr(&intern->ce->function_table, "endchildren", sizeof("endchildren") - 1);
if (intern->endChildren->common.scope == ce_base) {
intern->endChildren = NULL;
}
intern->nextElement = zend_hash_str_find_ptr(&intern->ce->function_table, "nextelement", sizeof("nextElement") - 1);
if (intern->nextElement->common.scope == ce_base) {
intern->nextElement = NULL;
}
ce_iterator = Z_OBJCE_P(iterator); /* respect inheritance, don't use spl_ce_RecursiveIterator */
intern->iterators[0].iterator = ce_iterator->get_iterator(ce_iterator, iterator, 0);
ZVAL_OBJ(&intern->iterators[0].zobject, Z_OBJ_P(iterator));
intern->iterators[0].ce = ce_iterator;
intern->iterators[0].state = RS_START;
intern->iterators[0].haschildren = NULL;
intern->iterators[0].getchildren = NULL;
if (EG(exception)) {
zend_object_iterator *sub_iter;
while (intern->level >= 0) {
sub_iter = intern->iterators[intern->level].iterator;
zend_iterator_dtor(sub_iter);
zval_ptr_dtor(&intern->iterators[intern->level--].zobject);
}
efree(intern->iterators);
intern->iterators = NULL;
}
}
/* {{{ Creates a RecursiveIteratorIterator from a RecursiveIterator. */
PHP_METHOD(RecursiveIteratorIterator, __construct)
{
spl_recursive_it_it_construct(INTERNAL_FUNCTION_PARAM_PASSTHRU, spl_ce_RecursiveIteratorIterator, zend_ce_iterator, RIT_RecursiveIteratorIterator);
} /* }}} */
/* {{{ Rewind the iterator to the first element of the top level inner iterator. */
PHP_METHOD(RecursiveIteratorIterator, rewind)
{
spl_recursive_it_object *object = Z_SPLRECURSIVE_IT_P(ZEND_THIS);
if (zend_parse_parameters_none() == FAILURE) {
RETURN_THROWS();
}
spl_recursive_it_rewind_ex(object, ZEND_THIS);
} /* }}} */
/* {{{ Check whether the current position is valid */
PHP_METHOD(RecursiveIteratorIterator, valid)
{
spl_recursive_it_object *object = Z_SPLRECURSIVE_IT_P(ZEND_THIS);
if (zend_parse_parameters_none() == FAILURE) {
RETURN_THROWS();
}
RETURN_BOOL(spl_recursive_it_valid_ex(object, ZEND_THIS) == SUCCESS);
} /* }}} */
/* {{{ Access the current key */
PHP_METHOD(RecursiveIteratorIterator, key)
{
spl_recursive_it_object *object = Z_SPLRECURSIVE_IT_P(ZEND_THIS);
zend_object_iterator *iterator;
if (zend_parse_parameters_none() == FAILURE) {
RETURN_THROWS();
}
SPL_FETCH_SUB_ITERATOR(iterator, object);
if (iterator->funcs->get_current_key) {
iterator->funcs->get_current_key(iterator, return_value);
} else {
RETURN_NULL();
}
} /* }}} */
/* {{{ Access the current element value */
PHP_METHOD(RecursiveIteratorIterator, current)
{
spl_recursive_it_object *object = Z_SPLRECURSIVE_IT_P(ZEND_THIS);
zend_object_iterator *iterator;
zval *data;
if (zend_parse_parameters_none() == FAILURE) {
RETURN_THROWS();
}
SPL_FETCH_SUB_ITERATOR(iterator, object);
data = iterator->funcs->get_current_data(iterator);
if (data) {
RETURN_COPY_DEREF(data);
}
} /* }}} */
/* {{{ Move forward to the next element */
PHP_METHOD(RecursiveIteratorIterator, next)
{
spl_recursive_it_object *object = Z_SPLRECURSIVE_IT_P(ZEND_THIS);
if (zend_parse_parameters_none() == FAILURE) {
RETURN_THROWS();
}
spl_recursive_it_move_forward_ex(object, ZEND_THIS);
} /* }}} */
/* {{{ Get the current depth of the recursive iteration */
PHP_METHOD(RecursiveIteratorIterator, getDepth)
{
spl_recursive_it_object *object = Z_SPLRECURSIVE_IT_P(ZEND_THIS);
if (zend_parse_parameters_none() == FAILURE) {
RETURN_THROWS();
}
RETURN_LONG(object->level);
} /* }}} */
/* {{{ The current active sub iterator or the iterator at specified level */
PHP_METHOD(RecursiveIteratorIterator, getSubIterator)
{
spl_recursive_it_object *object = Z_SPLRECURSIVE_IT_P(ZEND_THIS);
zend_long level;
bool level_is_null = 1;
zval *value;
if (zend_parse_parameters(ZEND_NUM_ARGS(), "|l!", &level, &level_is_null) == FAILURE) {
RETURN_THROWS();
}
if (level_is_null) {
level = object->level;
} else if (level < 0 || level > object->level) {
RETURN_NULL();
}
if(!object->iterators) {
zend_throw_error(NULL, "The object is in an invalid state as the parent constructor was not called");
RETURN_THROWS();
}
value = &object->iterators[level].zobject;
RETURN_COPY_DEREF(value);
} /* }}} */
/* {{{ The current active sub iterator */
PHP_METHOD(RecursiveIteratorIterator, getInnerIterator)
{
spl_recursive_it_object *object = Z_SPLRECURSIVE_IT_P(ZEND_THIS);
zval *zobject;
if (zend_parse_parameters_none() == FAILURE) {
RETURN_THROWS();
}
SPL_FETCH_SUB_ELEMENT_ADDR(zobject, object, zobject);
RETURN_COPY_DEREF(zobject);
} /* }}} */
/* {{{ Called when iteration begins (after first rewind() call) */
PHP_METHOD(RecursiveIteratorIterator, beginIteration)
{
if (zend_parse_parameters_none() == FAILURE) {
RETURN_THROWS();
}
/* nothing to do */
} /* }}} */
/* {{{ Called when iteration ends (when valid() first returns false */
PHP_METHOD(RecursiveIteratorIterator, endIteration)
{
if (zend_parse_parameters_none() == FAILURE) {
RETURN_THROWS();
}
/* nothing to do */
} /* }}} */
/* {{{ Called for each element to test whether it has children */
PHP_METHOD(RecursiveIteratorIterator, callHasChildren)
{
spl_recursive_it_object *object = Z_SPLRECURSIVE_IT_P(ZEND_THIS);
zend_class_entry *ce;
zval *zobject;
if (zend_parse_parameters_none() == FAILURE) {
RETURN_THROWS();
}
if (!object->iterators) {
RETURN_FALSE;
}
SPL_FETCH_SUB_ELEMENT(ce, object, ce);
zobject = &object->iterators[object->level].zobject;
if (Z_TYPE_P(zobject) == IS_UNDEF) {
RETURN_FALSE;
} else {
zend_call_method_with_0_params(Z_OBJ_P(zobject), ce, &object->iterators[object->level].haschildren, "haschildren", return_value);
if (Z_TYPE_P(return_value) == IS_UNDEF) {
RETURN_FALSE;
}
}
} /* }}} */
/* {{{ Return children of current element */
PHP_METHOD(RecursiveIteratorIterator, callGetChildren)
{
spl_recursive_it_object *object = Z_SPLRECURSIVE_IT_P(ZEND_THIS);
zend_class_entry *ce;
zval *zobject;
if (zend_parse_parameters_none() == FAILURE) {
RETURN_THROWS();
}
SPL_FETCH_SUB_ELEMENT(ce, object, ce);
zobject = &object->iterators[object->level].zobject;
if (Z_TYPE_P(zobject) == IS_UNDEF) {
RETURN_NULL();
} else {
zend_call_method_with_0_params(Z_OBJ_P(zobject), ce, &object->iterators[object->level].getchildren, "getchildren", return_value);
if (Z_TYPE_P(return_value) == IS_UNDEF) {
RETURN_NULL();
}
}
} /* }}} */
/* {{{ Called when recursing one level down */
PHP_METHOD(RecursiveIteratorIterator, beginChildren)
{
if (zend_parse_parameters_none() == FAILURE) {
RETURN_THROWS();
}
/* nothing to do */
} /* }}} */
/* {{{ Called when end recursing one level */
PHP_METHOD(RecursiveIteratorIterator, endChildren)
{
if (zend_parse_parameters_none() == FAILURE) {
RETURN_THROWS();
}
/* nothing to do */
} /* }}} */
/* {{{ Called when the next element is available */
PHP_METHOD(RecursiveIteratorIterator, nextElement)
{
if (zend_parse_parameters_none() == FAILURE) {
RETURN_THROWS();
}
/* nothing to do */
} /* }}} */
/* {{{ Set the maximum allowed depth (or any depth if pmax_depth = -1] */
PHP_METHOD(RecursiveIteratorIterator, setMaxDepth)
{
spl_recursive_it_object *object = Z_SPLRECURSIVE_IT_P(ZEND_THIS);
zend_long max_depth = -1;
if (zend_parse_parameters(ZEND_NUM_ARGS(), "|l", &max_depth) == FAILURE) {
RETURN_THROWS();
}
if (max_depth < -1) {
zend_argument_value_error(1, "must be greater than or equal to -1");
RETURN_THROWS();
} else if (max_depth > INT_MAX) {
max_depth = INT_MAX;
}
object->max_depth = (int)max_depth;
} /* }}} */
/* {{{ Return the maximum accepted depth or false if any depth is allowed */
PHP_METHOD(RecursiveIteratorIterator, getMaxDepth)
{
spl_recursive_it_object *object = Z_SPLRECURSIVE_IT_P(ZEND_THIS);
if (zend_parse_parameters_none() == FAILURE) {
RETURN_THROWS();
}
if (object->max_depth == -1) {
RETURN_FALSE;
} else {
RETURN_LONG(object->max_depth);
}
} /* }}} */
static zend_function *spl_recursive_it_get_method(zend_object **zobject, zend_string *method, const zval *key)
{
zend_function *function_handler;
spl_recursive_it_object *object = spl_recursive_it_from_obj(*zobject);
zend_long level = object->level;
zval *zobj;
if (!object->iterators) {
zend_throw_error(NULL, "The %s instance wasn't initialized properly", ZSTR_VAL((*zobject)->ce->name));
return NULL;
}
zobj = &object->iterators[level].zobject;
function_handler = zend_std_get_method(zobject, method, key);
if (!function_handler) {
if ((function_handler = zend_hash_find_ptr(&Z_OBJCE_P(zobj)->function_table, method)) == NULL) {
*zobject = Z_OBJ_P(zobj);
function_handler = (*zobject)->handlers->get_method(zobject, method, key);
} else {
*zobject = Z_OBJ_P(zobj);
}
}
return function_handler;
}
/* {{{ spl_RecursiveIteratorIterator_free_storage */
static void spl_RecursiveIteratorIterator_free_storage(zend_object *_object)
{
spl_recursive_it_object *object = spl_recursive_it_from_obj(_object);
if (object->iterators) {
while (object->level >= 0) {
zend_object_iterator *sub_iter = object->iterators[object->level].iterator;
zend_iterator_dtor(sub_iter);
zval_ptr_dtor(&object->iterators[object->level].zobject);
object->level--;
}
efree(object->iterators);
object->iterators = NULL;
}
zend_object_std_dtor(&object->std);
for (size_t i = 0; i < 6; i++) {
if (object->prefix[i]) {
zend_string_release(object->prefix[i]);
}
}
if (object->postfix[0]) {
zend_string_release(object->postfix[0]);
}
}
/* }}} */
static HashTable *spl_RecursiveIteratorIterator_get_gc(zend_object *obj, zval **table, int *n)
{
spl_recursive_it_object *object = spl_recursive_it_from_obj(obj);
zend_get_gc_buffer *gc_buffer = zend_get_gc_buffer_create();
if (object->iterators) {
for (int level = 0; level <= object->level; level++) {
zend_get_gc_buffer_add_zval(gc_buffer, &object->iterators[level].zobject);
zend_get_gc_buffer_add_obj(gc_buffer, &object->iterators[level].iterator->std);
}
}
zend_get_gc_buffer_use(gc_buffer, table, n);
return zend_std_get_properties(obj);
}
/* {{{ spl_RecursiveIteratorIterator_new_ex */
static zend_object *spl_RecursiveIteratorIterator_new_ex(zend_class_entry *class_type, int init_prefix)
{
spl_recursive_it_object *intern;
intern = zend_object_alloc(sizeof(spl_recursive_it_object), class_type);