/
vm_eval.c
1777 lines (1573 loc) · 43.4 KB
/
vm_eval.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
/**********************************************************************
vm_eval.c -
$Author$
created at: Sat May 24 16:02:32 JST 2008
Copyright (C) 1993-2007 Yukihiro Matsumoto
Copyright (C) 2000 Network Applied Communication Laboratory, Inc.
Copyright (C) 2000 Information-technology Promotion Agency, Japan
**********************************************************************/
static inline VALUE method_missing(VALUE obj, ID id, int argc, const VALUE *argv, int call_status);
static inline VALUE rb_vm_set_finish_env(rb_thread_t * th);
static inline VALUE vm_yield_with_cref(rb_thread_t *th, int argc, const VALUE *argv, const NODE *cref);
static inline VALUE vm_yield(rb_thread_t *th, int argc, const VALUE *argv);
static inline VALUE vm_backtrace(rb_thread_t *th, int lev);
static int vm_backtrace_each(rb_thread_t *th, int lev, void (*init)(void *), rb_backtrace_iter_func *iter, void *arg);
static NODE *vm_cref_push(rb_thread_t *th, VALUE klass, int noex, rb_block_t *blockptr);
static VALUE vm_exec(rb_thread_t *th);
static void vm_set_eval_stack(rb_thread_t * th, VALUE iseqval, const NODE *cref);
static int vm_collect_local_variables_in_heap(rb_thread_t *th, VALUE *dfp, VALUE ary);
typedef enum call_type {
CALL_PUBLIC,
CALL_FCALL,
CALL_VCALL,
CALL_TYPE_MAX
} call_type;
static VALUE send_internal(int argc, const VALUE *argv, VALUE recv, call_type scope);
static inline VALUE
vm_call0(rb_thread_t* th, VALUE recv, VALUE id, int argc, const VALUE *argv,
const rb_method_entry_t *me)
{
const rb_method_definition_t *def = me->def;
VALUE val;
VALUE klass = me->klass;
const rb_block_t *blockptr = 0;
if (!def) return Qnil;
if (th->passed_block) {
blockptr = th->passed_block;
th->passed_block = 0;
}
again:
switch (def->type) {
case VM_METHOD_TYPE_ISEQ: {
rb_control_frame_t *reg_cfp;
int i;
rb_vm_set_finish_env(th);
reg_cfp = th->cfp;
CHECK_STACK_OVERFLOW(reg_cfp, argc + 1);
*reg_cfp->sp++ = recv;
for (i = 0; i < argc; i++) {
*reg_cfp->sp++ = argv[i];
}
vm_setup_method(th, reg_cfp, recv, argc, blockptr, 0 /* flag */, me);
val = vm_exec(th);
break;
}
case VM_METHOD_TYPE_CFUNC: {
EXEC_EVENT_HOOK(th, RUBY_EVENT_C_CALL, recv, id, klass);
{
rb_control_frame_t *reg_cfp = th->cfp;
rb_control_frame_t *cfp =
vm_push_frame(th, 0, VM_FRAME_MAGIC_CFUNC,
recv, (VALUE)blockptr, 0, reg_cfp->sp, 0, 1);
cfp->me = me;
val = call_cfunc(def->body.cfunc.func, recv, def->body.cfunc.argc, argc, argv);
if (reg_cfp != th->cfp + 1) {
rb_bug("cfp consistency error - call0");
}
vm_pop_frame(th);
}
EXEC_EVENT_HOOK(th, RUBY_EVENT_C_RETURN, recv, id, klass);
break;
}
case VM_METHOD_TYPE_ATTRSET: {
if (argc != 1) {
rb_raise(rb_eArgError, "wrong number of arguments (%d for 1)", argc);
}
val = rb_ivar_set(recv, def->body.attr.id, argv[0]);
break;
}
case VM_METHOD_TYPE_IVAR: {
if (argc != 0) {
rb_raise(rb_eArgError, "wrong number of arguments (%d for 0)", argc);
}
val = rb_attr_get(recv, def->body.attr.id);
break;
}
case VM_METHOD_TYPE_BMETHOD: {
val = vm_call_bmethod(th, recv, argc, argv, blockptr, me);
break;
}
case VM_METHOD_TYPE_ZSUPER: {
klass = RCLASS_SUPER(klass);
if (!klass || !(me = rb_method_entry(klass, id))) {
return method_missing(recv, id, argc, argv, NOEX_SUPER);
}
RUBY_VM_CHECK_INTS();
if (!(def = me->def)) return Qnil;
goto again;
}
case VM_METHOD_TYPE_MISSING: {
VALUE new_args = rb_ary_new4(argc, argv);
RB_GC_GUARD(new_args);
rb_ary_unshift(new_args, ID2SYM(id));
return rb_funcall2(recv, idMethodMissing,
argc+1, RARRAY_PTR(new_args));
}
case VM_METHOD_TYPE_OPTIMIZED: {
switch (def->body.optimize_type) {
case OPTIMIZED_METHOD_TYPE_SEND:
val = send_internal(argc, argv, recv, CALL_FCALL);
break;
case OPTIMIZED_METHOD_TYPE_CALL: {
rb_proc_t *proc;
GetProcPtr(recv, proc);
val = rb_vm_invoke_proc(th, proc, proc->block.self, argc, argv, blockptr);
break;
}
default:
rb_bug("vm_call0: unsupported optimized method type (%d)", def->body.optimize_type);
val = Qundef;
break;
}
break;
}
default:
rb_bug("vm_call0: unsupported method type (%d)", def->type);
val = Qundef;
}
RUBY_VM_CHECK_INTS();
return val;
}
VALUE
rb_vm_call(rb_thread_t *th, VALUE recv, VALUE id, int argc, const VALUE *argv,
const rb_method_entry_t *me)
{
return vm_call0(th, recv, id, argc, argv, me);
}
static inline VALUE
vm_call_super(rb_thread_t *th, int argc, const VALUE *argv)
{
VALUE recv = th->cfp->self;
VALUE klass;
ID id;
rb_method_entry_t *me;
rb_control_frame_t *cfp = th->cfp;
if (!cfp->iseq) {
klass = cfp->me->klass;
klass = RCLASS_SUPER(klass);
if (klass == 0) {
klass = vm_search_normal_superclass(cfp->me->klass, recv);
}
id = cfp->me->def->original_id;
}
else {
rb_bug("vm_call_super: should not be reached");
}
me = rb_method_entry(klass, id);
if (!me) {
return method_missing(recv, id, argc, argv, NOEX_SUPER);
}
return vm_call0(th, recv, id, argc, argv, me);
}
VALUE
rb_call_super(int argc, const VALUE *argv)
{
PASS_PASSED_BLOCK();
return vm_call_super(GET_THREAD(), argc, argv);
}
static inline void
stack_check(void)
{
rb_thread_t *th = GET_THREAD();
if (!rb_thread_raised_p(th, RAISED_STACKOVERFLOW) && ruby_stack_check()) {
rb_thread_raised_set(th, RAISED_STACKOVERFLOW);
rb_exc_raise(sysstack_error);
}
}
static inline rb_method_entry_t *rb_search_method_entry(VALUE recv, ID mid);
static inline int rb_method_call_status(rb_thread_t *th, rb_method_entry_t *me, call_type scope, VALUE self);
#define NOEX_OK NOEX_NOSUPER
/*!
* \internal
* calls the specified method.
*
* This function is called by functions in rb_call* family.
* \param recv receiver of the method
* \param mid an ID that represents the name of the method
* \param argc the number of method arguments
* \param argv a pointer to an array of method arguments
* \param scope
* \param self self in the caller. Qundef means the current control frame's self.
*
* \note \a self is used in order to controlling access to protected methods.
*/
static inline VALUE
rb_call0(VALUE recv, ID mid, int argc, const VALUE *argv,
call_type scope, VALUE self)
{
rb_method_entry_t *me = rb_search_method_entry(recv, mid);
rb_thread_t *th = GET_THREAD();
int call_status = rb_method_call_status(th, me, scope, self);
if (call_status != NOEX_OK) {
return method_missing(recv, mid, argc, argv, call_status);
}
stack_check();
return vm_call0(th, recv, mid, argc, argv, me);
}
struct rescue_funcall_args {
VALUE recv;
VALUE sym;
int argc;
VALUE *argv;
};
static VALUE
check_funcall_exec(struct rescue_funcall_args *args)
{
VALUE new_args = rb_ary_new4(args->argc, args->argv);
RB_GC_GUARD(new_args);
rb_ary_unshift(new_args, args->sym);
return rb_funcall2(args->recv, idMethodMissing,
args->argc+1, RARRAY_PTR(new_args));
}
static VALUE
check_funcall_failed(struct rescue_funcall_args *args, VALUE e)
{
if (rb_respond_to(args->recv, SYM2ID(args->sym))) {
rb_exc_raise(e);
}
return Qundef;
}
static VALUE
check_funcall(VALUE recv, ID mid, int argc, VALUE *argv)
{
rb_method_entry_t *me = rb_search_method_entry(recv, mid);
rb_thread_t *th = GET_THREAD();
int call_status = rb_method_call_status(th, me, CALL_FCALL, Qundef);
if (call_status != NOEX_OK) {
if (rb_method_basic_definition_p(CLASS_OF(recv), idMethodMissing)) {
return Qundef;
}
else {
struct rescue_funcall_args args;
th->method_missing_reason = 0;
args.recv = recv;
args.sym = ID2SYM(mid);
args.argc = argc;
args.argv = argv;
return rb_rescue2(check_funcall_exec, (VALUE)&args,
check_funcall_failed, (VALUE)&args,
rb_eNoMethodError, (VALUE)0);
}
}
stack_check();
return vm_call0(th, recv, mid, argc, argv, me);
}
VALUE
rb_check_funcall(VALUE recv, ID mid, int argc, VALUE *argv)
{
return check_funcall(recv, mid, argc, argv);
}
static const char *
rb_type_str(enum ruby_value_type type)
{
#define type_case(t) case t: return #t;
switch (type) {
type_case(T_NONE)
type_case(T_OBJECT)
type_case(T_CLASS)
type_case(T_MODULE)
type_case(T_FLOAT)
type_case(T_STRING)
type_case(T_REGEXP)
type_case(T_ARRAY)
type_case(T_HASH)
type_case(T_STRUCT)
type_case(T_BIGNUM)
type_case(T_FILE)
type_case(T_DATA)
type_case(T_MATCH)
type_case(T_COMPLEX)
type_case(T_RATIONAL)
type_case(T_NIL)
type_case(T_TRUE)
type_case(T_FALSE)
type_case(T_SYMBOL)
type_case(T_FIXNUM)
type_case(T_UNDEF)
type_case(T_NODE)
type_case(T_ICLASS)
type_case(T_ZOMBIE)
default: return NULL;
}
#undef type_case
}
static inline rb_method_entry_t *
rb_search_method_entry(VALUE recv, ID mid)
{
VALUE klass = CLASS_OF(recv);
if (!klass) {
VALUE flags, klass;
if (IMMEDIATE_P(recv)) {
rb_raise(rb_eNotImpError,
"method `%s' called on unexpected immediate object (%p)",
rb_id2name(mid), (void *)recv);
}
flags = RBASIC(recv)->flags;
klass = RBASIC(recv)->klass;
if (flags == 0) {
rb_raise(rb_eNotImpError,
"method `%s' called on terminated object"
" (%p flags=0x%"PRIxVALUE" klass=0x%"PRIxVALUE")",
rb_id2name(mid), (void *)recv, flags, klass);
}
else {
int type = BUILTIN_TYPE(recv);
const char *typestr = rb_type_str(type);
if (typestr && T_OBJECT <= type && type < T_NIL)
rb_raise(rb_eNotImpError,
"method `%s' called on hidden %s object"
" (%p flags=0x%"PRIxVALUE" klass=0x%"PRIxVALUE")",
rb_id2name(mid), typestr, (void *)recv, flags, klass);
if (typestr)
rb_raise(rb_eNotImpError,
"method `%s' called on unexpected %s object"
" (%p flags=0x%"PRIxVALUE" klass=0x%"PRIxVALUE")",
rb_id2name(mid), typestr, (void *)recv, flags, klass);
else
rb_raise(rb_eNotImpError,
"method `%s' called on broken T_???" "(0x%02x) object"
" (%p flags=0x%"PRIxVALUE" klass=0x%"PRIxVALUE")",
rb_id2name(mid), type, (void *)recv, flags, klass);
}
}
return rb_method_entry(klass, mid);
}
static inline int
rb_method_call_status(rb_thread_t *th, rb_method_entry_t *me, call_type scope, VALUE self)
{
VALUE klass;
ID oid;
int noex;
if (UNDEFINED_METHOD_ENTRY_P(me)) {
return scope == CALL_VCALL ? NOEX_VCALL : 0;
}
klass = me->klass;
oid = me->def->original_id;
noex = me->flag;
if (oid != idMethodMissing) {
/* receiver specified form for private method */
if (UNLIKELY(noex)) {
if (((noex & NOEX_MASK) & NOEX_PRIVATE) && scope == CALL_PUBLIC) {
return NOEX_PRIVATE;
}
/* self must be kind of a specified form for protected method */
if (((noex & NOEX_MASK) & NOEX_PROTECTED) && scope == CALL_PUBLIC) {
VALUE defined_class = klass;
if (TYPE(defined_class) == T_ICLASS) {
defined_class = RBASIC(defined_class)->klass;
}
if (self == Qundef) {
self = th->cfp->self;
}
if (!rb_obj_is_kind_of(self, defined_class)) {
return NOEX_PROTECTED;
}
}
if (NOEX_SAFE(noex) > th->safe_level) {
rb_raise(rb_eSecurityError, "calling insecure method: %s",
rb_id2name(me->called_id));
}
}
}
return NOEX_OK;
}
/*!
* \internal
* calls the specified method.
*
* This function is called by functions in rb_call* family.
* \param recv receiver
* \param mid an ID that represents the name of the method
* \param argc the number of method arguments
* \param argv a pointer to an array of method arguments
* \param scope
*/
static inline VALUE
rb_call(VALUE recv, ID mid, int argc, const VALUE *argv, call_type scope)
{
return rb_call0(recv, mid, argc, argv, scope, Qundef);
}
NORETURN(static void raise_method_missing(rb_thread_t *th, int argc, const VALUE *argv,
VALUE obj, int call_status));
/*
* call-seq:
* obj.method_missing(symbol [, *args] ) -> result
*
* Invoked by Ruby when <i>obj</i> is sent a message it cannot handle.
* <i>symbol</i> is the symbol for the method called, and <i>args</i>
* are any arguments that were passed to it. By default, the interpreter
* raises an error when this method is called. However, it is possible
* to override the method to provide more dynamic behavior.
* If it is decided that a particular method should not be handled, then
* <i>super</i> should be called, so that ancestors can pick up the
* missing method.
* The example below creates
* a class <code>Roman</code>, which responds to methods with names
* consisting of roman numerals, returning the corresponding integer
* values.
*
* class Roman
* def romanToInt(str)
* # ...
* end
* def method_missing(methId)
* str = methId.id2name
* romanToInt(str)
* end
* end
*
* r = Roman.new
* r.iv #=> 4
* r.xxiii #=> 23
* r.mm #=> 2000
*/
static VALUE
rb_method_missing(int argc, const VALUE *argv, VALUE obj)
{
rb_thread_t *th = GET_THREAD();
raise_method_missing(th, argc, argv, obj, th->method_missing_reason);
return Qnil; /* not reached */
}
#define NOEX_MISSING 0x80
static void
raise_method_missing(rb_thread_t *th, int argc, const VALUE *argv, VALUE obj,
int last_call_status)
{
ID id;
VALUE exc = rb_eNoMethodError;
const char *format = 0;
if (argc == 0 || !SYMBOL_P(argv[0])) {
rb_raise(rb_eArgError, "no id given");
}
stack_check();
id = SYM2ID(argv[0]);
if (last_call_status & NOEX_PRIVATE) {
format = "private method `%s' called for %s";
}
else if (last_call_status & NOEX_PROTECTED) {
format = "protected method `%s' called for %s";
}
else if (last_call_status & NOEX_VCALL) {
format = "undefined local variable or method `%s' for %s";
exc = rb_eNameError;
}
else if (last_call_status & NOEX_SUPER) {
format = "super: no superclass method `%s' for %s";
}
if (!format) {
format = "undefined method `%s' for %s";
}
{
int n = 0;
VALUE mesg;
VALUE args[3];
mesg = rb_const_get(exc, rb_intern("message"));
if (rb_method_basic_definition_p(CLASS_OF(mesg), '!')) {
args[n++] = rb_name_err_mesg_new(mesg, rb_str_new2(format), obj, argv[0]);
}
else {
args[n++] = rb_funcall(mesg, '!', 3, rb_str_new2(format), obj, argv[0]);
}
args[n++] = argv[0];
if (exc == rb_eNoMethodError) {
args[n++] = rb_ary_new4(argc - 1, argv + 1);
}
exc = rb_class_new_instance(n, args, exc);
if (!(last_call_status & NOEX_MISSING)) {
th->cfp = RUBY_VM_PREVIOUS_CONTROL_FRAME(th->cfp);
}
rb_exc_raise(exc);
}
}
static inline VALUE
method_missing(VALUE obj, ID id, int argc, const VALUE *argv, int call_status)
{
VALUE *nargv, result, argv_ary = 0;
rb_thread_t *th = GET_THREAD();
th->method_missing_reason = call_status;
th->passed_block = 0;
if (id == idMethodMissing) {
raise_method_missing(th, argc, argv, obj, call_status | NOEX_MISSING);
}
else if (id == ID_ALLOCATOR) {
rb_raise(rb_eTypeError, "allocator undefined for %s",
rb_class2name(obj));
}
if (argc < 0x100) {
nargv = ALLOCA_N(VALUE, argc + 1);
}
else {
argv_ary = rb_ary_tmp_new(argc + 1);
nargv = RARRAY_PTR(argv_ary);
}
nargv[0] = ID2SYM(id);
MEMCPY(nargv + 1, argv, VALUE, argc);
if (rb_method_basic_definition_p(CLASS_OF(obj) , idMethodMissing)) {
raise_method_missing(th, argc+1, nargv, obj, call_status | NOEX_MISSING);
}
result = rb_funcall2(obj, idMethodMissing, argc + 1, nargv);
if (argv_ary) rb_ary_clear(argv_ary);
return result;
}
void
rb_raise_method_missing(rb_thread_t *th, int argc, VALUE *argv,
VALUE obj, int call_status)
{
th->passed_block = 0;
raise_method_missing(th, argc, argv, obj, call_status | NOEX_MISSING);
}
/*!
* Calls a method
* \param recv receiver of the method
* \param mid an ID that represents the name of the method
* \param args an Array object which contains method arguments
*
* \pre \a args must refer an Array object.
*/
VALUE
rb_apply(VALUE recv, ID mid, VALUE args)
{
int argc;
VALUE *argv;
argc = RARRAY_LENINT(args);
argv = ALLOCA_N(VALUE, argc);
MEMCPY(argv, RARRAY_PTR(args), VALUE, argc);
return rb_call(recv, mid, argc, argv, CALL_FCALL);
}
/*!
* Calls a method
* \param recv receiver of the method
* \param mid an ID that represents the name of the method
* \param n the number of arguments
* \param ... arbitrary number of method arguments
*
* \pre each of arguments after \a n must be a VALUE.
*/
VALUE
rb_funcall(VALUE recv, ID mid, int n, ...)
{
VALUE *argv;
va_list ar;
va_init_list(ar, n);
if (n > 0) {
long i;
argv = ALLOCA_N(VALUE, n);
for (i = 0; i < n; i++) {
argv[i] = va_arg(ar, VALUE);
}
va_end(ar);
}
else {
argv = 0;
}
return rb_call(recv, mid, n, argv, CALL_FCALL);
}
/*!
* Calls a method
* \param recv receiver of the method
* \param mid an ID that represents the name of the method
* \param argc the number of arguments
* \param argv pointer to an array of method arguments
*/
VALUE
rb_funcall2(VALUE recv, ID mid, int argc, const VALUE *argv)
{
return rb_call(recv, mid, argc, argv, CALL_FCALL);
}
/*!
* Calls a method.
*
* Same as rb_funcall2 but this function can call only public methods.
* \param recv receiver of the method
* \param mid an ID that represents the name of the method
* \param argc the number of arguments
* \param argv pointer to an array of method arguments
*/
VALUE
rb_funcall3(VALUE recv, ID mid, int argc, const VALUE *argv)
{
return rb_call(recv, mid, argc, argv, CALL_PUBLIC);
}
static VALUE
send_internal(int argc, const VALUE *argv, VALUE recv, call_type scope)
{
VALUE vid;
VALUE self = RUBY_VM_PREVIOUS_CONTROL_FRAME(GET_THREAD()->cfp)->self;
rb_thread_t *th = GET_THREAD();
if (argc == 0) {
rb_raise(rb_eArgError, "no method name given");
}
vid = *argv++; argc--;
PASS_PASSED_BLOCK_TH(th);
return rb_call0(recv, rb_to_id(vid), argc, argv, scope, self);
}
/*
* call-seq:
* obj.send(symbol [, args...]) -> obj
* obj.__send__(symbol [, args...]) -> obj
*
* Invokes the method identified by _symbol_, passing it any
* arguments specified. You can use <code>__send__</code> if the name
* +send+ clashes with an existing method in _obj_.
*
* class Klass
* def hello(*args)
* "Hello " + args.join(' ')
* end
* end
* k = Klass.new
* k.send :hello, "gentle", "readers" #=> "Hello gentle readers"
*/
VALUE
rb_f_send(int argc, VALUE *argv, VALUE recv)
{
return send_internal(argc, argv, recv, CALL_FCALL);
}
/*
* call-seq:
* obj.public_send(symbol [, args...]) -> obj
*
* Invokes the method identified by _symbol_, passing it any
* arguments specified. Unlike send, public_send calls public
* methods only.
*
* 1.public_send(:puts, "hello") # causes NoMethodError
*/
VALUE
rb_f_public_send(int argc, VALUE *argv, VALUE recv)
{
return send_internal(argc, argv, recv, CALL_PUBLIC);
}
/* yield */
static inline VALUE
rb_yield_0(int argc, const VALUE * argv)
{
return vm_yield(GET_THREAD(), argc, argv);
}
VALUE
rb_yield(VALUE val)
{
if (val == Qundef) {
return rb_yield_0(0, 0);
}
else {
return rb_yield_0(1, &val);
}
}
VALUE
rb_yield_values(int n, ...)
{
if (n == 0) {
return rb_yield_0(0, 0);
}
else {
int i;
VALUE *argv;
va_list args;
argv = ALLOCA_N(VALUE, n);
va_init_list(args, n);
for (i=0; i<n; i++) {
argv[i] = va_arg(args, VALUE);
}
va_end(args);
return rb_yield_0(n, argv);
}
}
VALUE
rb_yield_values2(int argc, const VALUE *argv)
{
return rb_yield_0(argc, argv);
}
VALUE
rb_yield_splat(VALUE values)
{
VALUE tmp = rb_check_array_type(values);
volatile VALUE v;
if (NIL_P(tmp)) {
rb_raise(rb_eArgError, "not an array");
}
v = rb_yield_0(RARRAY_LENINT(tmp), RARRAY_PTR(tmp));
return v;
}
static VALUE
loop_i(void)
{
for (;;) {
rb_yield_0(0, 0);
}
return Qnil;
}
/*
* call-seq:
* loop { block }
* loop -> an_enumerator
*
* Repeatedly executes the block.
*
* If no block is given, an enumerator is returned instead.
*
* loop do
* print "Input: "
* line = gets
* break if !line or line =~ /^qQ/
* # ...
* end
*
* StopIteration raised in the block breaks the loop.
*/
static VALUE
rb_f_loop(VALUE self)
{
RETURN_ENUMERATOR(self, 0, 0);
rb_rescue2(loop_i, (VALUE)0, 0, 0, rb_eStopIteration, (VALUE)0);
return Qnil; /* dummy */
}
#if VMDEBUG
static const char *
vm_frametype_name(const rb_control_frame_t *cfp);
#endif
VALUE
rb_iterate(VALUE (* it_proc) (VALUE), VALUE data1,
VALUE (* bl_proc) (ANYARGS), VALUE data2)
{
int state;
volatile VALUE retval = Qnil;
NODE *node = NEW_IFUNC(bl_proc, data2);
rb_thread_t *th = GET_THREAD();
rb_control_frame_t *volatile cfp = th->cfp;
TH_PUSH_TAG(th);
state = TH_EXEC_TAG();
if (state == 0) {
iter_retry:
{
rb_block_t *blockptr;
if (bl_proc) {
blockptr = RUBY_VM_GET_BLOCK_PTR_IN_CFP(th->cfp);
blockptr->iseq = (void *)node;
blockptr->proc = 0;
}
else {
blockptr = GC_GUARDED_PTR_REF(th->cfp->lfp[0]);
}
th->passed_block = blockptr;
}
retval = (*it_proc) (data1);
}
else {
VALUE err = th->errinfo;
if (state == TAG_BREAK) {
VALUE *escape_dfp = GET_THROWOBJ_CATCH_POINT(err);
VALUE *cdfp = cfp->dfp;
if (cdfp == escape_dfp) {
state = 0;
th->state = 0;
th->errinfo = Qnil;
/* check skipped frame */
while (th->cfp != cfp) {
#if VMDEBUG
printf("skipped frame: %s\n", vm_frametype_name(th->cfp));
#endif
if (UNLIKELY(VM_FRAME_TYPE(th->cfp) == VM_FRAME_MAGIC_CFUNC)) {
const rb_method_entry_t *me = th->cfp->me;
EXEC_EVENT_HOOK(th, RUBY_EVENT_C_RETURN, th->cfp->self, me->called_id, me->klass);
}
th->cfp = RUBY_VM_PREVIOUS_CONTROL_FRAME(th->cfp);
}
}
else{
/* SDR(); printf("%p, %p\n", cdfp, escape_dfp); */
}
}
else if (state == TAG_RETRY) {
VALUE *escape_dfp = GET_THROWOBJ_CATCH_POINT(err);
VALUE *cdfp = cfp->dfp;
if (cdfp == escape_dfp) {
state = 0;
th->state = 0;
th->errinfo = Qnil;
th->cfp = cfp;
goto iter_retry;
}
}
}
TH_POP_TAG();
switch (state) {
case 0:
break;
default:
TH_JUMP_TAG(th, state);
}
return retval;
}
struct iter_method_arg {
VALUE obj;
ID mid;
int argc;
VALUE *argv;
};
static VALUE
iterate_method(VALUE obj)
{
const struct iter_method_arg * arg =
(struct iter_method_arg *) obj;
return rb_call(arg->obj, arg->mid, arg->argc, arg->argv, CALL_FCALL);
}
VALUE
rb_block_call(VALUE obj, ID mid, int argc, VALUE * argv,
VALUE (*bl_proc) (ANYARGS), VALUE data2)
{
struct iter_method_arg arg;
arg.obj = obj;
arg.mid = mid;
arg.argc = argc;
arg.argv = argv;
return rb_iterate(iterate_method, (VALUE)&arg, bl_proc, data2);
}
VALUE
rb_each(VALUE obj)
{
return rb_call(obj, idEach, 0, 0, CALL_FCALL);
}
static VALUE
eval_string_with_cref(VALUE self, VALUE src, VALUE scope, NODE *cref, const char *volatile file, volatile int line)
{
int state;
VALUE result = Qundef;
VALUE envval;
rb_binding_t *bind = 0;
rb_thread_t *th = GET_THREAD();
rb_env_t *env = NULL;
rb_block_t block;
volatile int parse_in_eval;
volatile int mild_compile_error;
if (file == 0) {
file = rb_sourcefile();
line = rb_sourceline();
}
parse_in_eval = th->parse_in_eval;
mild_compile_error = th->mild_compile_error;
PUSH_TAG();
if ((state = EXEC_TAG()) == 0) {
rb_iseq_t *iseq;
volatile VALUE iseqval;
if (scope != Qnil) {
if (rb_obj_is_kind_of(scope, rb_cBinding)) {
GetBindingPtr(scope, bind);
envval = bind->env;
if (strcmp(file, "(eval)") == 0 && bind->filename != Qnil) {
file = RSTRING_PTR(bind->filename);
line = bind->line_no;
}
}
else {
rb_raise(rb_eTypeError,
"wrong argument type %s (expected Binding)",
rb_obj_classname(scope));
}
GetEnvPtr(envval, env);
th->base_block = &env->block;
}
else {
rb_control_frame_t *cfp = rb_vm_get_ruby_level_next_cfp(th, th->cfp);
if (cfp != 0) {
block = *RUBY_VM_GET_BLOCK_PTR_IN_CFP(cfp);
th->base_block = █
th->base_block->self = self;
th->base_block->iseq = cfp->iseq; /* TODO */
}
else {
rb_raise(rb_eRuntimeError, "Can't eval on top of Fiber or Thread");
}
}
/* make eval iseq */
th->parse_in_eval++;
th->mild_compile_error++;
iseqval = rb_iseq_compile(src, rb_str_new2(file), INT2FIX(line));
th->mild_compile_error--;