rubyparser.h

   1 #ifndef RUBY_RUBYPARSER_H
   2 #define RUBY_RUBYPARSER_H 1
   3 /*
   4  * This is a header file for librubyparser interface
   5  */
   6
   7 #include <stdarg.h> /* for va_list */
   8 #include <assert.h>
   9
  10 #ifdef UNIVERSAL_PARSER
  11
  12 #define rb_encoding void
  13 #define OnigCodePoint unsigned int
  14 #include "parser_st.h"
  15 #ifndef RUBY_RUBY_H
  16 #include "parser_value.h"
  17 #endif
  18
  19 #else
  20
  21 #include "ruby/encoding.h"
  22
  23 #endif
  24
  25 #ifndef FLEX_ARY_LEN
  26 /* From internal/compilers.h */
  27 /* A macro for defining a flexible array, like: VALUE ary[FLEX_ARY_LEN]; */
  28 #if defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L)
  29 # define FLEX_ARY_LEN   /* VALUE ary[]; */
  30 #elif defined(__GNUC__) && !defined(__STRICT_ANSI__)
  31 # define FLEX_ARY_LEN 0 /* VALUE ary[0]; */
  32 #else
  33 # define FLEX_ARY_LEN 1 /* VALUE ary[1]; */
  34 #endif
  35 #endif
  36
  37 #if defined(__GNUC__)
  38 # if defined(__MINGW_PRINTF_FORMAT)
  39 #   define RUBYPARSER_ATTRIBUTE_FORMAT(string_index, argument_index) __attribute__((format(__MINGW_PRINTF_FORMAT, string_index, argument_index)))
  40 # else
  41 #   define RUBYPARSER_ATTRIBUTE_FORMAT(string_index, argument_index) __attribute__((format(printf, string_index, argument_index)))
  42 # endif
  43 #elif defined(__clang__)
  44 # define RUBYPARSER_ATTRIBUTE_FORMAT(string_index, argument_index) __attribute__((__format__(__printf__, string_index, argument_index)))
  45 #else
  46 # define RUBYPARSER_ATTRIBUTE_FORMAT(string_index, argument_index)
  47 #endif
  48
  49 /*
  50  * Parser String
  51  */
  52 enum rb_parser_string_coderange_type {
  53     /** The object's coderange is unclear yet. */
  54     RB_PARSER_ENC_CODERANGE_UNKNOWN  = 0,
  55     RB_PARSER_ENC_CODERANGE_7BIT     = 1,
  56     RB_PARSER_ENC_CODERANGE_VALID    = 2,
  57     RB_PARSER_ENC_CODERANGE_BROKEN   = 3
  58 };
  59
  60 typedef struct rb_parser_string {
  61     enum rb_parser_string_coderange_type coderange;
  62     rb_encoding *enc;
  63     /* Length of the string, not including terminating NUL character. */
  64     long len;
  65     /* Pointer to the contents of the string. */
  66     char *ptr;
  67 } rb_parser_string_t;
  68
  69 enum rb_parser_shareability {
  70     rb_parser_shareable_none,
  71     rb_parser_shareable_literal,
  72     rb_parser_shareable_copy,
  73     rb_parser_shareable_everything,
  74 };
  75
  76 /*
  77  * AST Node
  78  */
  79 enum node_type {
  80     NODE_SCOPE,
  81     NODE_BLOCK,
  82     NODE_IF,
  83     NODE_UNLESS,
  84     NODE_CASE,
  85     NODE_CASE2,
  86     NODE_CASE3,
  87     NODE_WHEN,
  88     NODE_IN,
  89     NODE_WHILE,
  90     NODE_UNTIL,
  91     NODE_ITER,
  92     NODE_FOR,
  93     NODE_FOR_MASGN,
  94     NODE_BREAK,
  95     NODE_NEXT,
  96     NODE_REDO,
  97     NODE_RETRY,
  98     NODE_BEGIN,
  99     NODE_RESCUE,
 100     NODE_RESBODY,
 101     NODE_ENSURE,
 102     NODE_AND,
 103     NODE_OR,
 104     NODE_MASGN,
 105     NODE_LASGN,
 106     NODE_DASGN,
 107     NODE_GASGN,
 108     NODE_IASGN,
 109     NODE_CDECL,
 110     NODE_CVASGN,
 111     NODE_OP_ASGN1,
 112     NODE_OP_ASGN2,
 113     NODE_OP_ASGN_AND,
 114     NODE_OP_ASGN_OR,
 115     NODE_OP_CDECL,
 116     NODE_CALL,
 117     NODE_OPCALL,
 118     NODE_FCALL,
 119     NODE_VCALL,
 120     NODE_QCALL,
 121     NODE_SUPER,
 122     NODE_ZSUPER,
 123     NODE_LIST,
 124     NODE_ZLIST,
 125     NODE_HASH,
 126     NODE_RETURN,
 127     NODE_YIELD,
 128     NODE_LVAR,
 129     NODE_DVAR,
 130     NODE_GVAR,
 131     NODE_IVAR,
 132     NODE_CONST,
 133     NODE_CVAR,
 134     NODE_NTH_REF,
 135     NODE_BACK_REF,
 136     NODE_MATCH,
 137     NODE_MATCH2,
 138     NODE_MATCH3,
 139     NODE_INTEGER,
 140     NODE_FLOAT,
 141     NODE_RATIONAL,
 142     NODE_IMAGINARY,
 143     NODE_STR,
 144     NODE_DSTR,
 145     NODE_XSTR,
 146     NODE_DXSTR,
 147     NODE_EVSTR,
 148     NODE_REGX,
 149     NODE_DREGX,
 150     NODE_ONCE,
 151     NODE_ARGS,
 152     NODE_ARGS_AUX,
 153     NODE_OPT_ARG,
 154     NODE_KW_ARG,
 155     NODE_POSTARG,
 156     NODE_ARGSCAT,
 157     NODE_ARGSPUSH,
 158     NODE_SPLAT,
 159     NODE_BLOCK_PASS,
 160     NODE_DEFN,
 161     NODE_DEFS,
 162     NODE_ALIAS,
 163     NODE_VALIAS,
 164     NODE_UNDEF,
 165     NODE_CLASS,
 166     NODE_MODULE,
 167     NODE_SCLASS,
 168     NODE_COLON2,
 169     NODE_COLON3,
 170     NODE_DOT2,
 171     NODE_DOT3,
 172     NODE_FLIP2,
 173     NODE_FLIP3,
 174     NODE_SELF,
 175     NODE_NIL,
 176     NODE_TRUE,
 177     NODE_FALSE,
 178     NODE_ERRINFO,
 179     NODE_DEFINED,
 180     NODE_POSTEXE,
 181     NODE_SYM,
 182     NODE_DSYM,
 183     NODE_ATTRASGN,
 184     NODE_LAMBDA,
 185     NODE_ARYPTN,
 186     NODE_HSHPTN,
 187     NODE_FNDPTN,
 188     NODE_ERROR,
 189     NODE_LINE,
 190     NODE_FILE,
 191     NODE_ENCODING,
 192     NODE_LAST
 193 };
 194
 195 typedef struct rb_ast_id_table {
 196     int size;
 197     ID ids[FLEX_ARY_LEN];
 198 } rb_ast_id_table_t;
 199
 200 typedef struct rb_code_position_struct {
 201     int lineno;
 202     int column;
 203 } rb_code_position_t;
 204
 205 typedef struct rb_code_location_struct {
 206     rb_code_position_t beg_pos;
 207     rb_code_position_t end_pos;
 208 } rb_code_location_t;
 209 #define YYLTYPE rb_code_location_t
 210 #define YYLTYPE_IS_DECLARED 1
 211
 212 typedef struct rb_parser_ast_token {
 213     int id;
 214     const char *type_name;
 215     rb_parser_string_t *str;
 216     rb_code_location_t loc;
 217 } rb_parser_ast_token_t;
 218
 219 /*
 220  * Array-like object for parser
 221  */
 222 typedef struct rb_parser_ary {
 223     rb_parser_ast_token_t **data;
 224     long len;  // current size
 225     long capa; // capacity
 226 } rb_parser_ary_t;
 227
 228 /* Header part of AST Node */
 229 typedef struct RNode {
 230     VALUE flags;
 231     rb_code_location_t nd_loc;
 232     int node_id;
 233 } NODE;
 234
 235 typedef struct RNode_SCOPE {
 236     NODE node;
 237
 238     rb_ast_id_table_t *nd_tbl;
 239     struct RNode *nd_body;
 240     struct RNode_ARGS *nd_args;
 241 } rb_node_scope_t;
 242
 243 typedef struct RNode_BLOCK {
 244     NODE node;
 245
 246     struct RNode *nd_head;
 247     struct RNode *nd_end;
 248     struct RNode *nd_next;
 249 } rb_node_block_t;
 250
 251 typedef struct RNode_IF {
 252     NODE node;
 253
 254     struct RNode *nd_cond;
 255     struct RNode *nd_body;
 256     struct RNode *nd_else;
 257 } rb_node_if_t;
 258
 259 typedef struct RNode_UNLESS {
 260     NODE node;
 261
 262     struct RNode *nd_cond;
 263     struct RNode *nd_body;
 264     struct RNode *nd_else;
 265 } rb_node_unless_t;
 266
 267 typedef struct RNode_CASE {
 268     NODE node;
 269
 270     struct RNode *nd_head;
 271     struct RNode *nd_body;
 272 } rb_node_case_t;
 273
 274 typedef struct RNode_CASE2 {
 275     NODE node;
 276
 277     struct RNode *nd_head;
 278     struct RNode *nd_body;
 279 } rb_node_case2_t;
 280
 281 typedef struct RNode_CASE3 {
 282     NODE node;
 283
 284     struct RNode *nd_head;
 285     struct RNode *nd_body;
 286 } rb_node_case3_t;
 287
 288 typedef struct RNode_WHEN {
 289     NODE node;
 290
 291     struct RNode *nd_head;
 292     struct RNode *nd_body;
 293     struct RNode *nd_next;
 294 } rb_node_when_t;
 295
 296 typedef struct RNode_IN {
 297     NODE node;
 298
 299     struct RNode *nd_head;
 300     struct RNode *nd_body;
 301     struct RNode *nd_next;
 302 } rb_node_in_t;
 303
 304 /* RNode_WHILE and RNode_UNTIL should be same structure */
 305 typedef struct RNode_WHILE {
 306     NODE node;
 307
 308     struct RNode *nd_cond;
 309     struct RNode *nd_body;
 310     long nd_state;
 311 } rb_node_while_t;
 312
 313 typedef struct RNode_UNTIL {
 314     NODE node;
 315
 316     struct RNode *nd_cond;
 317     struct RNode *nd_body;
 318     long nd_state;
 319 } rb_node_until_t;
 320
 321 /* RNode_ITER and RNode_FOR should be same structure */
 322 typedef struct RNode_ITER {
 323     NODE node;
 324
 325     struct RNode *nd_body;
 326     struct RNode *nd_iter;
 327 } rb_node_iter_t;
 328
 329 typedef struct RNode_FOR {
 330     NODE node;
 331
 332     struct RNode *nd_body;
 333     struct RNode *nd_iter;
 334 } rb_node_for_t;
 335
 336 typedef struct RNode_FOR_MASGN {
 337     NODE node;
 338
 339     struct RNode *nd_var;
 340 } rb_node_for_masgn_t;
 341
 342 /* RNode_BREAK, RNode_NEXT and RNode_REDO should be same structure */
 343 typedef struct RNode_BREAK {
 344     NODE node;
 345
 346     struct RNode *nd_chain;
 347     struct RNode *nd_stts;
 348 } rb_node_break_t;
 349
 350 typedef struct RNode_NEXT {
 351     NODE node;
 352
 353     struct RNode *nd_chain;
 354     struct RNode *nd_stts;
 355 } rb_node_next_t;
 356
 357 typedef struct RNode_REDO {
 358     NODE node;
 359
 360     struct RNode *nd_chain;
 361 } rb_node_redo_t;
 362
 363 typedef struct RNode_RETRY {
 364     NODE node;
 365 } rb_node_retry_t;
 366
 367 typedef struct RNode_BEGIN {
 368     NODE node;
 369
 370     struct RNode *nd_body;
 371 } rb_node_begin_t;
 372
 373 typedef struct RNode_RESCUE {
 374     NODE node;
 375
 376     struct RNode *nd_head;
 377     struct RNode *nd_resq;
 378     struct RNode *nd_else;
 379 } rb_node_rescue_t;
 380
 381 typedef struct RNode_RESBODY {
 382     NODE node;
 383
 384     struct RNode *nd_args;
 385     struct RNode *nd_body;
 386     struct RNode *nd_next;
 387 } rb_node_resbody_t;
 388
 389 typedef struct RNode_ENSURE {
 390     NODE node;
 391
 392     struct RNode *nd_head;
 393     struct RNode *nd_ensr;
 394 } rb_node_ensure_t;
 395
 396 /* RNode_AND and RNode_OR should be same structure */
 397 typedef struct RNode_AND {
 398     NODE node;
 399
 400     struct RNode *nd_1st;
 401     struct RNode *nd_2nd;
 402 } rb_node_and_t;
 403
 404 typedef struct RNode_OR {
 405     NODE node;
 406
 407     struct RNode *nd_1st;
 408     struct RNode *nd_2nd;
 409 } rb_node_or_t;
 410
 411 typedef struct RNode_MASGN {
 412     NODE node;
 413
 414     struct RNode *nd_head;
 415     struct RNode *nd_value;
 416     struct RNode *nd_args;
 417 } rb_node_masgn_t;
 418
 419 typedef struct RNode_LASGN {
 420     NODE node;
 421
 422     ID nd_vid;
 423     struct RNode *nd_value;
 424 } rb_node_lasgn_t;
 425
 426 typedef struct RNode_DASGN {
 427     NODE node;
 428
 429     ID nd_vid;
 430     struct RNode *nd_value;
 431 } rb_node_dasgn_t;
 432
 433 typedef struct RNode_GASGN {
 434     NODE node;
 435
 436     ID nd_vid;
 437     struct RNode *nd_value;
 438 } rb_node_gasgn_t;
 439
 440 typedef struct RNode_IASGN {
 441     NODE node;
 442
 443     ID nd_vid;
 444     struct RNode *nd_value;
 445 } rb_node_iasgn_t;
 446
 447 typedef struct RNode_CDECL {
 448     NODE node;
 449
 450     ID nd_vid;
 451     struct RNode *nd_value;
 452     struct RNode *nd_else;
 453     enum rb_parser_shareability shareability;
 454 } rb_node_cdecl_t;
 455
 456 typedef struct RNode_CVASGN {
 457     NODE node;
 458
 459     ID nd_vid;
 460     struct RNode *nd_value;
 461 } rb_node_cvasgn_t;
 462
 463 typedef struct RNode_OP_ASGN1 {
 464     NODE node;
 465
 466     struct RNode *nd_recv;
 467     ID nd_mid;
 468     struct RNode *nd_index;
 469     struct RNode *nd_rvalue;
 470 } rb_node_op_asgn1_t;
 471
 472 typedef struct RNode_OP_ASGN2 {
 473     NODE node;
 474
 475     struct RNode *nd_recv;
 476     struct RNode *nd_value;
 477     ID nd_vid;
 478     ID nd_mid;
 479     bool nd_aid;
 480 } rb_node_op_asgn2_t;
 481
 482 typedef struct RNode_OP_ASGN_AND {
 483     NODE node;
 484
 485     struct RNode *nd_head;
 486     struct RNode *nd_value;
 487 } rb_node_op_asgn_and_t;
 488
 489 typedef struct RNode_OP_ASGN_OR {
 490     NODE node;
 491
 492     struct RNode *nd_head;
 493     struct RNode *nd_value;
 494 } rb_node_op_asgn_or_t;
 495
 496 typedef struct RNode_OP_CDECL {
 497     NODE node;
 498
 499     struct RNode *nd_head;
 500     struct RNode *nd_value;
 501     ID nd_aid;
 502     enum rb_parser_shareability shareability;
 503 } rb_node_op_cdecl_t;
 504
 505 typedef struct RNode_CALL {
 506     NODE node;
 507
 508     struct RNode *nd_recv;
 509     ID nd_mid;
 510     struct RNode *nd_args;
 511 } rb_node_call_t;
 512
 513 typedef struct RNode_OPCALL {
 514     NODE node;
 515
 516     struct RNode *nd_recv;
 517     ID nd_mid;
 518     struct RNode *nd_args;
 519 } rb_node_opcall_t;
 520
 521 typedef struct RNode_FCALL {
 522     NODE node;
 523
 524     ID nd_mid;
 525     struct RNode *nd_args;
 526 } rb_node_fcall_t;
 527
 528 typedef struct RNode_VCALL {
 529     NODE node;
 530
 531     ID nd_mid;
 532 } rb_node_vcall_t;
 533
 534 typedef struct RNode_QCALL {
 535     NODE node;
 536
 537     struct RNode *nd_recv;
 538     ID nd_mid;
 539     struct RNode *nd_args;
 540 } rb_node_qcall_t;
 541
 542 typedef struct RNode_SUPER {
 543     NODE node;
 544
 545     struct RNode *nd_args;
 546 } rb_node_super_t;
 547
 548 typedef struct RNode_ZSUPER {
 549     NODE node;
 550 } rb_node_zsuper_t;
 551
 552 /*
 553
 554   Structure of LIST:
 555
 556   LIST                     +--> LIST
 557    * head --> element      |     * head
 558    * alen (length of list) |     * nd_end (point to the last LIST)
 559    * next -----------------+     * next
 560
 561
 562   RNode_LIST and RNode_VALUES should be same structure
 563 */
 564 typedef struct RNode_LIST {
 565     NODE node;
 566
 567     struct RNode *nd_head; /* element */
 568     union {
 569         long nd_alen;
 570         struct RNode *nd_end; /* Second list node has this structure */
 571     } as;
 572     struct RNode *nd_next; /* next list node */
 573 } rb_node_list_t;
 574
 575 typedef struct RNode_ZLIST {
 576     NODE node;
 577 } rb_node_zlist_t;
 578
 579 typedef struct RNode_VALUES {
 580     NODE node;
 581
 582     struct RNode *nd_head;
 583     long nd_alen;
 584     struct RNode *nd_next;
 585 } rb_node_values_t;
 586
 587 typedef struct RNode_HASH {
 588     NODE node;
 589
 590     struct RNode *nd_head;
 591     long nd_brace;
 592 } rb_node_hash_t;
 593
 594 typedef struct RNode_RETURN {
 595     NODE node;
 596
 597     struct RNode *nd_stts;
 598 } rb_node_return_t;
 599
 600 typedef struct RNode_YIELD {
 601     NODE node;
 602
 603     struct RNode *nd_head;
 604 } rb_node_yield_t;
 605
 606 typedef struct RNode_LVAR {
 607     NODE node;
 608
 609     ID nd_vid;
 610 } rb_node_lvar_t;
 611
 612 typedef struct RNode_DVAR {
 613     NODE node;
 614
 615     ID nd_vid;
 616 } rb_node_dvar_t;
 617
 618 typedef struct RNode_GVAR {
 619     NODE node;
 620
 621     ID nd_vid;
 622 } rb_node_gvar_t;
 623
 624 typedef struct RNode_IVAR {
 625     NODE node;
 626
 627     ID nd_vid;
 628 } rb_node_ivar_t;
 629
 630 typedef struct RNode_CONST {
 631     NODE node;
 632
 633     ID nd_vid;
 634 } rb_node_const_t;
 635
 636 typedef struct RNode_CVAR {
 637     NODE node;
 638
 639     ID nd_vid;
 640 } rb_node_cvar_t;
 641
 642 typedef struct RNode_NTH_REF {
 643     NODE node;
 644
 645     long nd_nth;
 646 } rb_node_nth_ref_t;
 647
 648 typedef struct RNode_BACK_REF {
 649     NODE node;
 650
 651     long nd_nth;
 652 } rb_node_back_ref_t;
 653
 654 /* RNode_MATCH and RNode_REGX should be same structure */
 655 typedef struct RNode_MATCH {
 656     NODE node;
 657
 658     struct rb_parser_string *string;
 659     int options;
 660 } rb_node_match_t;
 661
 662 typedef struct RNode_MATCH2 {
 663     NODE node;
 664
 665     struct RNode *nd_recv;
 666     struct RNode *nd_value;
 667     struct RNode *nd_args;
 668 } rb_node_match2_t;
 669
 670 typedef struct RNode_MATCH3 {
 671     NODE node;
 672
 673     struct RNode *nd_recv;
 674     struct RNode *nd_value;
 675 } rb_node_match3_t;
 676
 677 typedef struct RNode_INTEGER {
 678     NODE node;
 679
 680     char *val;
 681     int minus;
 682     int base;
 683 } rb_node_integer_t;
 684
 685 typedef struct RNode_FLOAT {
 686     NODE node;
 687
 688     char *val;
 689     int minus;
 690 } rb_node_float_t;
 691
 692 typedef struct RNode_RATIONAL {
 693     NODE node;
 694
 695     char *val;
 696     int minus;
 697     int base;
 698     int seen_point;
 699 } rb_node_rational_t;
 700
 701 enum rb_numeric_type {
 702     integer_literal,
 703     float_literal,
 704     rational_literal
 705 };
 706
 707 typedef struct RNode_IMAGINARY {
 708     NODE node;
 709
 710     char *val;
 711     int minus;
 712     int base;
 713     int seen_point;
 714     enum rb_numeric_type type;
 715 } rb_node_imaginary_t;
 716
 717 /* RNode_STR and RNode_XSTR should be same structure */
 718 typedef struct RNode_STR {
 719     NODE node;
 720
 721     struct rb_parser_string *string;
 722 } rb_node_str_t;
 723
 724 /* RNode_DSTR, RNode_DXSTR and RNode_DSYM should be same structure */
 725 typedef struct RNode_DSTR {
 726     NODE node;
 727
 728     struct rb_parser_string *string;
 729     union {
 730         long nd_alen;
 731         struct RNode *nd_end; /* Second dstr node has this structure. See also RNode_LIST */
 732     } as;
 733     struct RNode_LIST *nd_next;
 734 } rb_node_dstr_t;
 735
 736 typedef struct RNode_XSTR {
 737     NODE node;
 738
 739     struct rb_parser_string *string;
 740 } rb_node_xstr_t;
 741
 742 typedef struct RNode_DXSTR {
 743     NODE node;
 744
 745     struct rb_parser_string *string;
 746     long nd_alen;
 747     struct RNode_LIST *nd_next;
 748 } rb_node_dxstr_t;
 749
 750 typedef struct RNode_EVSTR {
 751     NODE node;
 752
 753     struct RNode *nd_body;
 754 } rb_node_evstr_t;
 755
 756 typedef struct RNode_REGX {
 757     NODE node;
 758
 759     struct rb_parser_string *string;
 760     int options;
 761 } rb_node_regx_t;
 762
 763 typedef struct RNode_DREGX {
 764     NODE node;
 765
 766     struct rb_parser_string *string;
 767     ID nd_cflag;
 768     struct RNode_LIST *nd_next;
 769 } rb_node_dregx_t;
 770
 771 typedef struct RNode_ONCE {
 772     NODE node;
 773
 774     struct RNode *nd_body;
 775 } rb_node_once_t;
 776
 777 struct rb_args_info {
 778     NODE *pre_init;
 779     NODE *post_init;
 780
 781     int pre_args_num;  /* count of mandatory pre-arguments */
 782     int post_args_num; /* count of mandatory post-arguments */
 783
 784     ID first_post_arg;
 785
 786     ID rest_arg;
 787     ID block_arg;
 788
 789     struct RNode_KW_ARG *kw_args;
 790     NODE *kw_rest_arg;
 791
 792     struct RNode_OPT_ARG *opt_args;
 793     unsigned int no_kwarg: 1;
 794     unsigned int ruby2_keywords: 1;
 795     unsigned int forwarding: 1;
 796 };
 797
 798 typedef struct RNode_ARGS {
 799     NODE node;
 800
 801     struct rb_args_info nd_ainfo;
 802 } rb_node_args_t;
 803
 804 typedef struct RNode_ARGS_AUX {
 805     NODE node;
 806
 807     ID nd_pid;
 808     int nd_plen;
 809     struct RNode *nd_next;
 810 } rb_node_args_aux_t;
 811
 812 typedef struct RNode_OPT_ARG {
 813     NODE node;
 814
 815     struct RNode *nd_body;
 816     struct RNode_OPT_ARG *nd_next;
 817 } rb_node_opt_arg_t;
 818
 819 typedef struct RNode_KW_ARG {
 820     NODE node;
 821
 822     struct RNode *nd_body;
 823     struct RNode_KW_ARG *nd_next;
 824 } rb_node_kw_arg_t;
 825
 826 typedef struct RNode_POSTARG {
 827     NODE node;
 828
 829     struct RNode *nd_1st;
 830     struct RNode *nd_2nd;
 831 } rb_node_postarg_t;
 832
 833 typedef struct RNode_ARGSCAT {
 834     NODE node;
 835
 836     struct RNode *nd_head;
 837     struct RNode *nd_body;
 838 } rb_node_argscat_t;
 839
 840 typedef struct RNode_ARGSPUSH {
 841     NODE node;
 842
 843     struct RNode *nd_head;
 844     struct RNode *nd_body;
 845 } rb_node_argspush_t;
 846
 847 typedef struct RNode_SPLAT {
 848     NODE node;
 849