-
Notifications
You must be signed in to change notification settings - Fork 7
/
parse.y
11697 lines (10778 loc) · 252 KB
/
parse.y
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
/**********************************************************************
parse.y -
$Author$
created at: Fri May 28 18:02:42 JST 1993
Copyright (C) 1993-2007 Yukihiro Matsumoto
**********************************************************************/
%{
#ifndef PARSER_DEBUG
#define PARSER_DEBUG 0
#endif
#define YYDEBUG 1
#define YYERROR_VERBOSE 1
#define YYSTACK_USE_ALLOCA 0
#include "ruby/ruby.h"
#include "ruby/st.h"
#include "ruby/encoding.h"
#include "internal.h"
#include "node.h"
#include "parse.h"
#include "id.h"
#include "regenc.h"
#include <stdio.h>
#include <errno.h>
#include <ctype.h>
#include "probes.h"
#define YYMALLOC(size) rb_parser_malloc(parser, (size))
#define YYREALLOC(ptr, size) rb_parser_realloc(parser, (ptr), (size))
#define YYCALLOC(nelem, size) rb_parser_calloc(parser, (nelem), (size))
#define YYFREE(ptr) rb_parser_free(parser, (ptr))
#define malloc YYMALLOC
#define realloc YYREALLOC
#define calloc YYCALLOC
#define free YYFREE
#ifndef RIPPER
static ID register_symid(ID, const char *, long, rb_encoding *);
static ID register_symid_str(ID, VALUE);
#define REGISTER_SYMID(id, name) register_symid((id), (name), strlen(name), enc)
#include "id.c"
#endif
#define is_notop_id(id) ((id)>tLAST_OP_ID)
#define is_local_id(id) (is_notop_id(id)&&((id)&ID_SCOPE_MASK)==ID_LOCAL)
#define is_global_id(id) (is_notop_id(id)&&((id)&ID_SCOPE_MASK)==ID_GLOBAL)
#define is_instance_id(id) (is_notop_id(id)&&((id)&ID_SCOPE_MASK)==ID_INSTANCE)
#define is_attrset_id(id) (is_notop_id(id)&&((id)&ID_SCOPE_MASK)==ID_ATTRSET)
#define is_const_id(id) (is_notop_id(id)&&((id)&ID_SCOPE_MASK)==ID_CONST)
#define is_class_id(id) (is_notop_id(id)&&((id)&ID_SCOPE_MASK)==ID_CLASS)
#define is_junk_id(id) (is_notop_id(id)&&((id)&ID_SCOPE_MASK)==ID_JUNK)
#define id_type(id) (is_notop_id(id) ? (int)((id)&ID_SCOPE_MASK) : -1)
#define is_asgn_or_id(id) ((is_notop_id(id)) && \
(((id)&ID_SCOPE_MASK) == ID_GLOBAL || \
((id)&ID_SCOPE_MASK) == ID_INSTANCE || \
((id)&ID_SCOPE_MASK) == ID_CLASS))
enum lex_state_bits {
EXPR_BEG_bit, /* ignore newline, +/- is a sign. */
EXPR_END_bit, /* newline significant, +/- is an operator. */
EXPR_ENDARG_bit, /* ditto, and unbound braces. */
EXPR_ENDFN_bit, /* ditto, and unbound braces. */
EXPR_ARG_bit, /* newline significant, +/- is an operator. */
EXPR_CMDARG_bit, /* newline significant, +/- is an operator. */
EXPR_MID_bit, /* newline significant, +/- is an operator. */
EXPR_FNAME_bit, /* ignore newline, no reserved words. */
EXPR_DOT_bit, /* right after `.' or `::', no reserved words. */
EXPR_CLASS_bit, /* immediate after `class', no here document. */
EXPR_VALUE_bit, /* alike EXPR_BEG but label is disallowed. */
EXPR_MAX_STATE
};
/* examine combinations */
enum lex_state_e {
#define DEF_EXPR(n) EXPR_##n = (1 << EXPR_##n##_bit)
DEF_EXPR(BEG),
DEF_EXPR(END),
DEF_EXPR(ENDARG),
DEF_EXPR(ENDFN),
DEF_EXPR(ARG),
DEF_EXPR(CMDARG),
DEF_EXPR(MID),
DEF_EXPR(FNAME),
DEF_EXPR(DOT),
DEF_EXPR(CLASS),
DEF_EXPR(VALUE),
EXPR_BEG_ANY = (EXPR_BEG | EXPR_VALUE | EXPR_MID | EXPR_CLASS),
EXPR_ARG_ANY = (EXPR_ARG | EXPR_CMDARG),
EXPR_END_ANY = (EXPR_END | EXPR_ENDARG | EXPR_ENDFN)
};
#define IS_lex_state_for(x, ls) ((x) & (ls))
#define IS_lex_state(ls) IS_lex_state_for(lex_state, (ls))
#if PARSER_DEBUG
static const char *lex_state_name(enum lex_state_e state);
#endif
typedef VALUE stack_type;
# define BITSTACK_PUSH(stack, n) ((stack) = ((stack)<<1)|((n)&1))
# define BITSTACK_POP(stack) ((stack) = (stack) >> 1)
# define BITSTACK_LEXPOP(stack) ((stack) = ((stack) >> 1) | ((stack) & 1))
# define BITSTACK_SET_P(stack) ((stack)&1)
#define COND_PUSH(n) BITSTACK_PUSH(cond_stack, (n))
#define COND_POP() BITSTACK_POP(cond_stack)
#define COND_LEXPOP() BITSTACK_LEXPOP(cond_stack)
#define COND_P() BITSTACK_SET_P(cond_stack)
#define CMDARG_PUSH(n) BITSTACK_PUSH(cmdarg_stack, (n))
#define CMDARG_POP() BITSTACK_POP(cmdarg_stack)
#define CMDARG_LEXPOP() BITSTACK_LEXPOP(cmdarg_stack)
#define CMDARG_P() BITSTACK_SET_P(cmdarg_stack)
struct vtable {
ID *tbl;
int pos;
int capa;
struct vtable *prev;
};
struct local_vars {
struct vtable *args;
struct vtable *vars;
struct vtable *used;
struct local_vars *prev;
};
#define DVARS_INHERIT ((void*)1)
#define DVARS_TOPSCOPE NULL
#define DVARS_SPECIAL_P(tbl) (!POINTER_P(tbl))
#define POINTER_P(val) ((VALUE)(val) & ~(VALUE)3)
static int
vtable_size(const struct vtable *tbl)
{
if (POINTER_P(tbl)) {
return tbl->pos;
}
else {
return 0;
}
}
#define VTBL_DEBUG 0
static struct vtable *
vtable_alloc(struct vtable *prev)
{
struct vtable *tbl = ALLOC(struct vtable);
tbl->pos = 0;
tbl->capa = 8;
tbl->tbl = ALLOC_N(ID, tbl->capa);
tbl->prev = prev;
if (VTBL_DEBUG) printf("vtable_alloc: %p\n", (void *)tbl);
return tbl;
}
static void
vtable_free(struct vtable *tbl)
{
if (VTBL_DEBUG)printf("vtable_free: %p\n", (void *)tbl);
if (POINTER_P(tbl)) {
if (tbl->tbl) {
xfree(tbl->tbl);
}
xfree(tbl);
}
}
static void
vtable_add(struct vtable *tbl, ID id)
{
if (!POINTER_P(tbl)) {
rb_bug("vtable_add: vtable is not allocated (%p)", (void *)tbl);
}
if (VTBL_DEBUG) printf("vtable_add: %p, %s\n", (void *)tbl, rb_id2name(id));
if (tbl->pos == tbl->capa) {
tbl->capa = tbl->capa * 2;
REALLOC_N(tbl->tbl, ID, tbl->capa);
}
tbl->tbl[tbl->pos++] = id;
}
static int
vtable_included(const struct vtable * tbl, ID id)
{
int i;
if (POINTER_P(tbl)) {
for (i = 0; i < tbl->pos; i++) {
if (tbl->tbl[i] == id) {
return i+1;
}
}
}
return 0;
}
#ifndef RIPPER
typedef struct token_info {
const char *token;
int linenum;
int column;
int nonspc;
struct token_info *next;
} token_info;
#endif
/*
Structure of Lexer Buffer:
lex_pbeg tokp lex_p lex_pend
| | | |
|-----------+--------------+------------|
|<------------>|
token
*/
struct parser_params {
int is_ripper;
NODE *heap;
YYSTYPE *parser_yylval;
VALUE eofp;
NODE *parser_lex_strterm;
enum lex_state_e parser_lex_state;
stack_type parser_cond_stack;
stack_type parser_cmdarg_stack;
int parser_class_nest;
int parser_paren_nest;
int parser_lpar_beg;
int parser_in_single;
int parser_in_def;
int parser_brace_nest;
int parser_compile_for_eval;
VALUE parser_cur_mid;
int parser_in_defined;
char *parser_tokenbuf;
int parser_tokidx;
int parser_toksiz;
int parser_tokline;
VALUE parser_lex_input;
VALUE parser_lex_lastline;
VALUE parser_lex_nextline;
const char *parser_lex_pbeg;
const char *parser_lex_p;
const char *parser_lex_pend;
int parser_heredoc_end;
int parser_command_start;
NODE *parser_deferred_nodes;
long parser_lex_gets_ptr;
VALUE (*parser_lex_gets)(struct parser_params*,VALUE);
struct local_vars *parser_lvtbl;
int parser_ruby__end__seen;
int line_count;
int has_shebang;
char *parser_ruby_sourcefile; /* current source file */
int parser_ruby_sourceline; /* current line no. */
VALUE parser_ruby_sourcefile_string;
rb_encoding *enc;
int parser_yydebug;
int last_cr_line;
#ifndef RIPPER
/* Ruby core only */
NODE *parser_eval_tree_begin;
NODE *parser_eval_tree;
VALUE debug_lines;
VALUE coverage;
int nerr;
int parser_token_info_enabled;
token_info *parser_token_info;
#else
/* Ripper only */
const char *tokp;
VALUE delayed;
int delayed_line;
int delayed_col;
VALUE value;
VALUE result;
VALUE parsing_thread;
int toplevel_p;
#endif
};
#define STR_NEW(p,n) rb_enc_str_new((p),(n),current_enc)
#define STR_NEW0() rb_enc_str_new(0,0,current_enc)
#define STR_NEW2(p) rb_enc_str_new((p),strlen(p),current_enc)
#define STR_NEW3(p,n,e,func) parser_str_new((p),(n),(e),(func),current_enc)
#define ENC_SINGLE(cr) ((cr)==ENC_CODERANGE_7BIT)
#define TOK_INTERN(mb) rb_intern3(tok(), toklen(), current_enc)
static int parser_yyerror(struct parser_params*, const char*);
#define yyerror(msg) parser_yyerror(parser, (msg))
#define lex_strterm (parser->parser_lex_strterm)
#define lex_state (parser->parser_lex_state)
#define cond_stack (parser->parser_cond_stack)
#define cmdarg_stack (parser->parser_cmdarg_stack)
#define class_nest (parser->parser_class_nest)
#define paren_nest (parser->parser_paren_nest)
#define lpar_beg (parser->parser_lpar_beg)
#define brace_nest (parser->parser_brace_nest)
#define in_single (parser->parser_in_single)
#define in_def (parser->parser_in_def)
#define compile_for_eval (parser->parser_compile_for_eval)
#define cur_mid (parser->parser_cur_mid)
#define in_defined (parser->parser_in_defined)
#define tokenbuf (parser->parser_tokenbuf)
#define tokidx (parser->parser_tokidx)
#define toksiz (parser->parser_toksiz)
#define tokline (parser->parser_tokline)
#define lex_input (parser->parser_lex_input)
#define lex_lastline (parser->parser_lex_lastline)
#define lex_nextline (parser->parser_lex_nextline)
#define lex_pbeg (parser->parser_lex_pbeg)
#define lex_p (parser->parser_lex_p)
#define lex_pend (parser->parser_lex_pend)
#define heredoc_end (parser->parser_heredoc_end)
#define command_start (parser->parser_command_start)
#define deferred_nodes (parser->parser_deferred_nodes)
#define lex_gets_ptr (parser->parser_lex_gets_ptr)
#define lex_gets (parser->parser_lex_gets)
#define lvtbl (parser->parser_lvtbl)
#define ruby__end__seen (parser->parser_ruby__end__seen)
#define ruby_sourceline (parser->parser_ruby_sourceline)
#define ruby_sourcefile (parser->parser_ruby_sourcefile)
#define ruby_sourcefile_string (parser->parser_ruby_sourcefile_string)
#define current_enc (parser->enc)
#define yydebug (parser->parser_yydebug)
#ifdef RIPPER
#else
#define ruby_eval_tree (parser->parser_eval_tree)
#define ruby_eval_tree_begin (parser->parser_eval_tree_begin)
#define ruby_debug_lines (parser->debug_lines)
#define ruby_coverage (parser->coverage)
#endif
#if YYPURE
static int yylex(void*, void*);
#else
static int yylex(void*);
#endif
#ifndef RIPPER
#define yyparse ruby_yyparse
static NODE* node_newnode(struct parser_params *, enum node_type, VALUE, VALUE, VALUE);
#define rb_node_newnode(type, a1, a2, a3) node_newnode(parser, (type), (a1), (a2), (a3))
static NODE *cond_gen(struct parser_params*,NODE*);
#define cond(node) cond_gen(parser, (node))
static NODE *logop_gen(struct parser_params*,enum node_type,NODE*,NODE*);
#define logop(type,node1,node2) logop_gen(parser, (type), (node1), (node2))
static NODE *newline_node(NODE*);
static void fixpos(NODE*,NODE*);
static int value_expr_gen(struct parser_params*,NODE*);
static void void_expr_gen(struct parser_params*,NODE*);
static NODE *remove_begin(NODE*);
static NODE *remove_begin_all(NODE*);
#define value_expr(node) value_expr_gen(parser, (node) = remove_begin(node))
#define void_expr0(node) void_expr_gen(parser, (node))
#define void_expr(node) void_expr0((node) = remove_begin(node))
static void void_stmts_gen(struct parser_params*,NODE*);
#define void_stmts(node) void_stmts_gen(parser, (node))
static void reduce_nodes_gen(struct parser_params*,NODE**);
#define reduce_nodes(n) reduce_nodes_gen(parser,(n))
static void block_dup_check_gen(struct parser_params*,NODE*,NODE*);
#define block_dup_check(n1,n2) block_dup_check_gen(parser,(n1),(n2))
static NODE *block_append_gen(struct parser_params*,NODE*,NODE*);
#define block_append(h,t) block_append_gen(parser,(h),(t))
static NODE *list_append_gen(struct parser_params*,NODE*,NODE*);
#define list_append(l,i) list_append_gen(parser,(l),(i))
static NODE *list_concat_gen(struct parser_params*,NODE*,NODE*);
#define list_concat(h,t) list_concat_gen(parser,(h),(t))
static NODE *arg_append_gen(struct parser_params*,NODE*,NODE*);
#define arg_append(h,t) arg_append_gen(parser,(h),(t))
static NODE *arg_concat_gen(struct parser_params*,NODE*,NODE*);
#define arg_concat(h,t) arg_concat_gen(parser,(h),(t))
static NODE *literal_concat_gen(struct parser_params*,NODE*,NODE*);
#define literal_concat(h,t) literal_concat_gen(parser,(h),(t))
static int literal_concat0(struct parser_params *, VALUE, VALUE);
static NODE *new_evstr_gen(struct parser_params*,NODE*);
#define new_evstr(n) new_evstr_gen(parser,(n))
static NODE *evstr2dstr_gen(struct parser_params*,NODE*);
#define evstr2dstr(n) evstr2dstr_gen(parser,(n))
static NODE *str_suffix_gen(struct parser_params*, NODE*, long);
#define str_suffix(n,o) str_suffix_gen(parser,(n),(o))
static NODE *splat_array(NODE*);
static NODE *call_bin_op_gen(struct parser_params*,NODE*,ID,NODE*);
#define call_bin_op(recv,id,arg1) call_bin_op_gen(parser, (recv),(id),(arg1))
static NODE *call_uni_op_gen(struct parser_params*,NODE*,ID);
#define call_uni_op(recv,id) call_uni_op_gen(parser, (recv),(id))
static NODE *new_args_gen(struct parser_params*,NODE*,NODE*,ID,NODE*,NODE*);
#define new_args(f,o,r,p,t) new_args_gen(parser, (f),(o),(r),(p),(t))
static NODE *new_args_tail_gen(struct parser_params*,NODE*,ID,ID);
#define new_args_tail(k,kr,b) new_args_tail_gen(parser, (k),(kr),(b))
static NODE *negate_lit(NODE*);
static NODE *ret_args_gen(struct parser_params*,NODE*);
#define ret_args(node) ret_args_gen(parser, (node))
static NODE *arg_blk_pass(NODE*,NODE*);
static NODE *new_yield_gen(struct parser_params*,NODE*);
#define new_yield(node) new_yield_gen(parser, (node))
static NODE *dsym_node_gen(struct parser_params*,NODE*);
#define dsym_node(node) dsym_node_gen(parser, (node))
static NODE *gettable_gen(struct parser_params*,ID);
#define gettable(id) gettable_gen(parser,(id))
static NODE *assignable_gen(struct parser_params*,ID,NODE*);
#define assignable(id,node) assignable_gen(parser, (id), (node))
static NODE *aryset_gen(struct parser_params*,NODE*,NODE*);
#define aryset(node1,node2) aryset_gen(parser, (node1), (node2))
static NODE *attrset_gen(struct parser_params*,NODE*,ID);
#define attrset(node,id) attrset_gen(parser, (node), (id))
static void rb_backref_error_gen(struct parser_params*,NODE*);
#define rb_backref_error(n) rb_backref_error_gen(parser,(n))
static NODE *node_assign_gen(struct parser_params*,NODE*,NODE*);
#define node_assign(node1, node2) node_assign_gen(parser, (node1), (node2))
static NODE *new_op_assign_gen(struct parser_params *parser, NODE *lhs, ID op, NODE *rhs);
static NODE *new_attr_op_assign_gen(struct parser_params *parser, NODE *lhs, ID attr, ID op, NODE *rhs);
#define new_attr_op_assign(lhs, type, attr, op, rhs) new_attr_op_assign_gen(parser, (lhs), (attr), (op), (rhs))
static NODE *new_const_op_assign_gen(struct parser_params *parser, NODE *lhs, ID op, NODE *rhs);
#define new_const_op_assign(lhs, op, rhs) new_const_op_assign_gen(parser, (lhs), (op), (rhs))
#define new_defined(expr) NEW_DEFINED(remove_begin_all(expr))
static NODE *match_op_gen(struct parser_params*,NODE*,NODE*);
#define match_op(node1,node2) match_op_gen(parser, (node1), (node2))
static ID *local_tbl_gen(struct parser_params*);
#define local_tbl() local_tbl_gen(parser)
static void fixup_nodes(NODE **);
static VALUE reg_compile_gen(struct parser_params*, VALUE, int);
#define reg_compile(str,options) reg_compile_gen(parser, (str), (options))
static void reg_fragment_setenc_gen(struct parser_params*, VALUE, int);
#define reg_fragment_setenc(str,options) reg_fragment_setenc_gen(parser, (str), (options))
static int reg_fragment_check_gen(struct parser_params*, VALUE, int);
#define reg_fragment_check(str,options) reg_fragment_check_gen(parser, (str), (options))
static NODE *reg_named_capture_assign_gen(struct parser_params* parser, VALUE regexp, NODE *match);
#define reg_named_capture_assign(regexp,match) reg_named_capture_assign_gen(parser,(regexp),(match))
#define get_id(id) (id)
#define get_value(val) (val)
#else
#define value_expr(node) ((void)(node))
#define remove_begin(node) (node)
#define rb_dvar_defined(id) 0
#define rb_local_defined(id) 0
static ID ripper_get_id(VALUE);
#define get_id(id) ripper_get_id(id)
static VALUE ripper_get_value(VALUE);
#define get_value(val) ripper_get_value(val)
static VALUE assignable_gen(struct parser_params*,VALUE);
#define assignable(lhs,node) assignable_gen(parser, (lhs))
static int id_is_var_gen(struct parser_params *parser, ID id);
#define id_is_var(id) id_is_var_gen(parser, (id))
#define node_assign(node1, node2) dispatch2(assign, (node1), (node2))
static VALUE new_op_assign_gen(struct parser_params *parser, VALUE lhs, VALUE op, VALUE rhs);
static VALUE new_attr_op_assign_gen(struct parser_params *parser, VALUE lhs, VALUE type, VALUE attr, VALUE op, VALUE rhs);
#define new_attr_op_assign(lhs, type, attr, op, rhs) new_attr_op_assign_gen(parser, (lhs), (type), (attr), (op), (rhs))
#endif /* !RIPPER */
#define new_op_assign(lhs, op, rhs) new_op_assign_gen(parser, (lhs), (op), (rhs))
static ID formal_argument_gen(struct parser_params*, ID);
#define formal_argument(id) formal_argument_gen(parser, (id))
static ID shadowing_lvar_gen(struct parser_params*,ID);
#define shadowing_lvar(name) shadowing_lvar_gen(parser, (name))
static void new_bv_gen(struct parser_params*,ID);
#define new_bv(id) new_bv_gen(parser, (id))
static void local_push_gen(struct parser_params*,int);
#define local_push(top) local_push_gen(parser,(top))
static void local_pop_gen(struct parser_params*);
#define local_pop() local_pop_gen(parser)
static int local_var_gen(struct parser_params*, ID);
#define local_var(id) local_var_gen(parser, (id))
static int arg_var_gen(struct parser_params*, ID);
#define arg_var(id) arg_var_gen(parser, (id))
static int local_id_gen(struct parser_params*, ID);
#define local_id(id) local_id_gen(parser, (id))
static ID internal_id_gen(struct parser_params*);
#define internal_id() internal_id_gen(parser)
static const struct vtable *dyna_push_gen(struct parser_params *);
#define dyna_push() dyna_push_gen(parser)
static void dyna_pop_gen(struct parser_params*, const struct vtable *);
#define dyna_pop(node) dyna_pop_gen(parser, (node))
static int dyna_in_block_gen(struct parser_params*);
#define dyna_in_block() dyna_in_block_gen(parser)
#define dyna_var(id) local_var(id)
static int dvar_defined_gen(struct parser_params*,ID,int);
#define dvar_defined(id) dvar_defined_gen(parser, (id), 0)
#define dvar_defined_get(id) dvar_defined_gen(parser, (id), 1)
static int dvar_curr_gen(struct parser_params*,ID);
#define dvar_curr(id) dvar_curr_gen(parser, (id))
static int lvar_defined_gen(struct parser_params*, ID);
#define lvar_defined(id) lvar_defined_gen(parser, (id))
#define RE_OPTION_ONCE (1<<16)
#define RE_OPTION_ENCODING_SHIFT 8
#define RE_OPTION_ENCODING(e) (((e)&0xff)<<RE_OPTION_ENCODING_SHIFT)
#define RE_OPTION_ENCODING_IDX(o) (((o)>>RE_OPTION_ENCODING_SHIFT)&0xff)
#define RE_OPTION_ENCODING_NONE(o) ((o)&RE_OPTION_ARG_ENCODING_NONE)
#define RE_OPTION_MASK 0xff
#define RE_OPTION_ARG_ENCODING_NONE 32
#define STR_OPTION_FROZEN 1
#define STR_OPTION_BINARY 0 /* disabled */
#define NODE_STRTERM NODE_ZARRAY /* nothing to gc */
#define NODE_HEREDOC NODE_ARRAY /* 1, 3 to gc */
#define SIGN_EXTEND(x,n) (((1<<(n)-1)^((x)&~(~0<<(n))))-(1<<(n)-1))
#define nd_func u1.id
#if SIZEOF_SHORT == 2
#define nd_term(node) ((signed short)(node)->u2.id)
#else
#define nd_term(node) SIGN_EXTEND((node)->u2.id, CHAR_BIT*2)
#endif
#define nd_paren(node) (char)((node)->u2.id >> CHAR_BIT*2)
#define nd_nest u3.cnt
/****** Ripper *******/
#ifdef RIPPER
#define RIPPER_VERSION "0.1.0"
#include "eventids1.c"
#include "eventids2.c"
static VALUE ripper_dispatch0(struct parser_params*,ID);
static VALUE ripper_dispatch1(struct parser_params*,ID,VALUE);
static VALUE ripper_dispatch2(struct parser_params*,ID,VALUE,VALUE);
static VALUE ripper_dispatch3(struct parser_params*,ID,VALUE,VALUE,VALUE);
static VALUE ripper_dispatch4(struct parser_params*,ID,VALUE,VALUE,VALUE,VALUE);
static VALUE ripper_dispatch5(struct parser_params*,ID,VALUE,VALUE,VALUE,VALUE,VALUE);
static VALUE ripper_dispatch7(struct parser_params*,ID,VALUE,VALUE,VALUE,VALUE,VALUE,VALUE,VALUE);
#define dispatch0(n) ripper_dispatch0(parser, TOKEN_PASTE(ripper_id_, n))
#define dispatch1(n,a) ripper_dispatch1(parser, TOKEN_PASTE(ripper_id_, n), (a))
#define dispatch2(n,a,b) ripper_dispatch2(parser, TOKEN_PASTE(ripper_id_, n), (a), (b))
#define dispatch3(n,a,b,c) ripper_dispatch3(parser, TOKEN_PASTE(ripper_id_, n), (a), (b), (c))
#define dispatch4(n,a,b,c,d) ripper_dispatch4(parser, TOKEN_PASTE(ripper_id_, n), (a), (b), (c), (d))
#define dispatch5(n,a,b,c,d,e) ripper_dispatch5(parser, TOKEN_PASTE(ripper_id_, n), (a), (b), (c), (d), (e))
#define dispatch7(n,a,b,c,d,e,f,g) ripper_dispatch7(parser, TOKEN_PASTE(ripper_id_, n), (a), (b), (c), (d), (e), (f), (g))
#define yyparse ripper_yyparse
#define ripper_intern(s) ID2SYM(rb_intern(s))
static VALUE ripper_id2sym(ID);
#ifdef __GNUC__
#define ripper_id2sym(id) ((id) < 256 && rb_ispunct(id) ? \
ID2SYM(id) : ripper_id2sym(id))
#endif
#define arg_new() dispatch0(args_new)
#define arg_add(l,a) dispatch2(args_add, (l), (a))
#define arg_add_star(l,a) dispatch2(args_add_star, (l), (a))
#define arg_add_block(l,b) dispatch2(args_add_block, (l), (b))
#define arg_add_optblock(l,b) ((b)==Qundef? (l) : dispatch2(args_add_block, (l), (b)))
#define bare_assoc(v) dispatch1(bare_assoc_hash, (v))
#define arg_add_assocs(l,b) arg_add((l), bare_assoc(b))
#define args2mrhs(a) dispatch1(mrhs_new_from_args, (a))
#define mrhs_new() dispatch0(mrhs_new)
#define mrhs_add(l,a) dispatch2(mrhs_add, (l), (a))
#define mrhs_add_star(l,a) dispatch2(mrhs_add_star, (l), (a))
#define mlhs_new() dispatch0(mlhs_new)
#define mlhs_add(l,a) dispatch2(mlhs_add, (l), (a))
#define mlhs_add_star(l,a) dispatch2(mlhs_add_star, (l), (a))
#define params_new(pars, opts, rest, pars2, kws, kwrest, blk) \
dispatch7(params, (pars), (opts), (rest), (pars2), (kws), (kwrest), (blk))
#define blockvar_new(p,v) dispatch2(block_var, (p), (v))
#define blockvar_add_star(l,a) dispatch2(block_var_add_star, (l), (a))
#define blockvar_add_block(l,a) dispatch2(block_var_add_block, (l), (a))
#define method_optarg(m,a) ((a)==Qundef ? (m) : dispatch2(method_add_arg,(m),(a)))
#define method_arg(m,a) dispatch2(method_add_arg,(m),(a))
#define method_add_block(m,b) dispatch2(method_add_block, (m), (b))
#define escape_Qundef(x) ((x)==Qundef ? Qnil : (x))
static inline VALUE
new_args_gen(struct parser_params *parser, VALUE f, VALUE o, VALUE r, VALUE p, VALUE tail)
{
NODE *t = (NODE *)tail;
VALUE k = t->u1.value, kr = t->u2.value, b = t->u3.value;
return params_new(f, o, r, p, k, kr, escape_Qundef(b));
}
#define new_args(f,o,r,p,t) new_args_gen(parser, (f),(o),(r),(p),(t))
static inline VALUE
new_args_tail_gen(struct parser_params *parser, VALUE k, VALUE kr, VALUE b)
{
return (VALUE)rb_node_newnode(NODE_MEMO, k, kr, b);
}
#define new_args_tail(k,kr,b) new_args_tail_gen(parser, (k),(kr),(b))
#define new_defined(expr) dispatch1(defined, (expr))
#define FIXME 0
#endif /* RIPPER */
#ifndef RIPPER
# define Qnone 0
# define ifndef_ripper(x) (x)
#else
# define Qnone Qnil
# define ifndef_ripper(x)
#endif
#ifndef RIPPER
# define rb_warn0(fmt) rb_compile_warn(ruby_sourcefile, ruby_sourceline, (fmt))
# define rb_warnI(fmt,a) rb_compile_warn(ruby_sourcefile, ruby_sourceline, (fmt), (a))
# define rb_warnS(fmt,a) rb_compile_warn(ruby_sourcefile, ruby_sourceline, (fmt), (a))
# define rb_warn4S(file,line,fmt,a) rb_compile_warn((file), (line), (fmt), (a))
# define rb_warning0(fmt) rb_compile_warning(ruby_sourcefile, ruby_sourceline, (fmt))
# define rb_warningS(fmt,a) rb_compile_warning(ruby_sourcefile, ruby_sourceline, (fmt), (a))
#else
# define rb_warn0(fmt) ripper_warn0(parser, (fmt))
# define rb_warnI(fmt,a) ripper_warnI(parser, (fmt), (a))
# define rb_warnS(fmt,a) ripper_warnS(parser, (fmt), (a))
# define rb_warn4S(file,line,fmt,a) ripper_warnS(parser, (fmt), (a))
# define rb_warning0(fmt) ripper_warning0(parser, (fmt))
# define rb_warningS(fmt,a) ripper_warningS(parser, (fmt), (a))
static void ripper_warn0(struct parser_params*, const char*);
static void ripper_warnI(struct parser_params*, const char*, int);
static void ripper_warnS(struct parser_params*, const char*, const char*);
static void ripper_warning0(struct parser_params*, const char*);
static void ripper_warningS(struct parser_params*, const char*, const char*);
#endif
#ifdef RIPPER
static void ripper_compile_error(struct parser_params*, const char *fmt, ...);
# define rb_compile_error ripper_compile_error
# define compile_error ripper_compile_error
# define PARSER_ARG parser,
#else
# define rb_compile_error rb_compile_error_with_enc
# define compile_error parser->nerr++,rb_compile_error_with_enc
# define PARSER_ARG ruby_sourcefile, ruby_sourceline, current_enc,
#endif
/* Older versions of Yacc set YYMAXDEPTH to a very low value by default (150,
for instance). This is too low for Ruby to parse some files, such as
date/format.rb, therefore bump the value up to at least Bison's default. */
#ifdef OLD_YACC
#ifndef YYMAXDEPTH
#define YYMAXDEPTH 10000
#endif
#endif
#ifndef RIPPER
static void token_info_push(struct parser_params*, const char *token);
static void token_info_pop(struct parser_params*, const char *token);
#define token_info_push(token) (RTEST(ruby_verbose) ? token_info_push(parser, (token)) : (void)0)
#define token_info_pop(token) (RTEST(ruby_verbose) ? token_info_pop(parser, (token)) : (void)0)
#else
#define token_info_push(token) /* nothing */
#define token_info_pop(token) /* nothing */
#endif
%}
%pure-parser
%lex-param {struct parser_params *parser}
%parse-param {struct parser_params *parser}
%union {
VALUE val;
NODE *node;
ID id;
int num;
const struct vtable *vars;
}
/*%%%*/
%token
/*%
%token <val>
%*/
keyword_class
keyword_module
keyword_def
keyword_undef
keyword_begin
keyword_rescue
keyword_ensure
keyword_end
keyword_if
keyword_unless
keyword_then
keyword_elsif
keyword_else
keyword_case
keyword_when
keyword_while
keyword_until
keyword_for
keyword_break
keyword_next
keyword_redo
keyword_retry
keyword_in
keyword_do
keyword_do_cond
keyword_do_block
keyword_do_LAMBDA
keyword_return
keyword_yield
keyword_super
keyword_self
keyword_nil
keyword_true
keyword_false
keyword_and
keyword_or
keyword_not
modifier_if
modifier_unless
modifier_while
modifier_until
modifier_rescue
keyword_alias
keyword_defined
keyword_BEGIN
keyword_END
keyword__LINE__
keyword__FILE__
keyword__ENCODING__
%token <id> tIDENTIFIER tFID tGVAR tIVAR tCONSTANT tCVAR tLABEL
%token <node> tINTEGER tFLOAT tRATIONAL tIMAGINARY tSTRING_CONTENT tCHAR
%token <node> tNTH_REF tBACK_REF
%token <num> tREGEXP_END tSTRING_SUFFIX
%type <node> singleton strings string string1 xstring regexp
%type <node> string_contents xstring_contents regexp_contents string_content
%type <node> words symbols symbol_list qwords qsymbols word_list qword_list qsym_list word
%type <node> literal numeric simple_numeric dsym cpath
%type <node> top_compstmt top_stmts top_stmt
%type <node> bodystmt compstmt stmts stmt_or_begin stmt expr arg primary command command_call method_call
%type <node> expr_value arg_value primary_value fcall
%type <node> if_tail opt_else case_body cases opt_rescue exc_list exc_var opt_ensure
%type <node> args call_args opt_call_args
%type <node> paren_args opt_paren_args args_tail opt_args_tail block_args_tail opt_block_args_tail
%type <node> command_args aref_args opt_block_arg block_arg var_ref var_lhs
%type <node> command_asgn mrhs mrhs_arg superclass block_call block_command
%type <node> f_block_optarg f_block_opt
%type <node> f_arglist f_args f_arg f_arg_item f_optarg f_marg f_marg_list f_margs
%type <node> assoc_list assocs assoc undef_list backref string_dvar for_var
%type <node> block_param opt_block_param block_param_def f_opt
%type <node> f_kwarg f_kw f_block_kwarg f_block_kw
%type <node> bv_decls opt_bv_decl bvar
%type <node> lambda f_larglist lambda_body
%type <node> brace_block cmd_brace_block do_block lhs none fitem
%type <node> mlhs mlhs_head mlhs_basic mlhs_item mlhs_node mlhs_post mlhs_inner
%type <id> fsym keyword_variable user_variable sym symbol operation operation2 operation3
%type <id> cname fname op f_rest_arg f_block_arg opt_f_block_arg f_norm_arg f_bad_arg
%type <id> f_kwrest f_label
%type <num> opt_string_sfx
/*%%%*/
/*%
%type <val> program reswords then do dot_or_colon
%*/
%token END_OF_INPUT 0 "end-of-input"
%token tUPLUS RUBY_TOKEN(UPLUS) "unary+"
%token tUMINUS RUBY_TOKEN(UMINUS) "unary-"
%token tPOW RUBY_TOKEN(POW) "**"
%token tCMP RUBY_TOKEN(CMP) "<=>"
%token tEQ RUBY_TOKEN(EQ) "=="
%token tEQQ RUBY_TOKEN(EQQ) "==="
%token tNEQ RUBY_TOKEN(NEQ) "!="
%token tGEQ RUBY_TOKEN(GEQ) ">="
%token tLEQ RUBY_TOKEN(LEQ) "<="
%token tANDOP "&&"
%token tOROP "||"
%token tMATCH RUBY_TOKEN(MATCH) "=~"
%token tNMATCH RUBY_TOKEN(NMATCH) "!~"
%token tDOT2 RUBY_TOKEN(DOT2) ".."
%token tDOT3 RUBY_TOKEN(DOT3) "..."
%token tAREF RUBY_TOKEN(AREF) "[]"
%token tASET RUBY_TOKEN(ASET) "[]="
%token tLSHFT RUBY_TOKEN(LSHFT) "<<"
%token tRSHFT RUBY_TOKEN(RSHFT) ">>"
%token tCOLON2 "::"
%token tCOLON3 ":: at EXPR_BEG"
%token <id> tOP_ASGN /* +=, -= etc. */
%token tASSOC "=>"
%token tLPAREN "("
%token tLPAREN_ARG "( arg"
%token tRPAREN ")"
%token tLBRACK "["
%token tLBRACE "{"
%token tLBRACE_ARG "{ arg"
%token tSTAR "*"
%token tDSTAR "**arg"
%token tAMPER "&"
%token tLAMBDA "->"
%token tSYMBEG tSTRING_BEG tXSTRING_BEG tREGEXP_BEG tWORDS_BEG tQWORDS_BEG tSYMBOLS_BEG tQSYMBOLS_BEG
%token tSTRING_DBEG tSTRING_DEND tSTRING_DVAR tSTRING_END tLAMBEG
/*
* precedence table
*/
%nonassoc tLOWEST
%nonassoc tLBRACE_ARG
%nonassoc modifier_if modifier_unless modifier_while modifier_until
%left keyword_or keyword_and
%right keyword_not
%nonassoc keyword_defined
%right '=' tOP_ASGN
%left modifier_rescue
%right '?' ':'
%nonassoc tDOT2 tDOT3
%left tOROP
%left tANDOP
%nonassoc tCMP tEQ tEQQ tNEQ tMATCH tNMATCH
%left '>' tGEQ '<' tLEQ
%left '|' '^'
%left '&'
%left tLSHFT tRSHFT
%left '+' '-'
%left '*' '/' '%'
%right tUMINUS_NUM tUMINUS
%right tPOW
%right '!' '~' tUPLUS
%token tLAST_TOKEN
%%
program : {
lex_state = EXPR_BEG;
/*%%%*/
local_push(compile_for_eval || rb_parse_in_main());
/*%
local_push(0);
%*/
}
top_compstmt
{
/*%%%*/
if ($2 && !compile_for_eval) {
/* last expression should not be void */
if (nd_type($2) != NODE_BLOCK) void_expr($2);
else {
NODE *node = $2;
while (node->nd_next) {
node = node->nd_next;
}
void_expr(node->nd_head);
}
}
ruby_eval_tree = NEW_SCOPE(0, block_append(ruby_eval_tree, $2));
/*%
$$ = $2;
parser->result = dispatch1(program, $$);
%*/
local_pop();
}
;
top_compstmt : top_stmts opt_terms
{
/*%%%*/
void_stmts($1);
fixup_nodes(&deferred_nodes);
/*%
%*/
$$ = $1;
}
;
top_stmts : none
{
/*%%%*/
$$ = NEW_BEGIN(0);
/*%
$$ = dispatch2(stmts_add, dispatch0(stmts_new),
dispatch0(void_stmt));
%*/
}
| top_stmt
{
/*%%%*/
$$ = newline_node($1);
/*%
$$ = dispatch2(stmts_add, dispatch0(stmts_new), $1);
%*/
}
| top_stmts terms top_stmt
{
/*%%%*/
$$ = block_append($1, newline_node($3));
/*%
$$ = dispatch2(stmts_add, $1, $3);
%*/
}
| error top_stmt
{
$$ = remove_begin($2);
}
;
top_stmt : stmt
| keyword_BEGIN
{
/*%%%*/
/* local_push(0); */
/*%
%*/
}
'{' top_compstmt '}'
{
/*%%%*/
ruby_eval_tree_begin = block_append(ruby_eval_tree_begin,
$4);
/* NEW_PREEXE($4)); */
/* local_pop(); */
$$ = NEW_BEGIN(0);
/*%
$$ = dispatch1(BEGIN, $4);
%*/
}
;
bodystmt : compstmt
opt_rescue
opt_else
opt_ensure
{
/*%%%*/
$$ = $1;
if ($2) {
$$ = NEW_RESCUE($1, $2, $3);
}
else if ($3) {
rb_warn0("else without rescue is useless");
$$ = block_append($$, $3);
}
if ($4) {
if ($$) {
$$ = NEW_ENSURE($$, $4);
}
else {
$$ = block_append($4, NEW_NIL());
}
}
fixpos($$, $1);
/*%
$$ = dispatch4(bodystmt,
escape_Qundef($1),
escape_Qundef($2),
escape_Qundef($3),
escape_Qundef($4));
%*/
}
;
compstmt : stmts opt_terms
{
/*%%%*/
void_stmts($1);
fixup_nodes(&deferred_nodes);
/*%
%*/
$$ = $1;