external/bsd/byacc/dist/defs.h

   1 /*      $NetBSD: defs.h,v 1.9 2015/01/04 01:34:20 christos Exp $        */
   2
   3 #if HAVE_NBTOOL_CONFIG_H
   4 #include "nbtool_config.h"
   5 #endif
   6 /* Id: defs.h,v 1.51 2014/10/02 22:38:13 tom Exp  */
   7
   8 #ifdef HAVE_CONFIG_H
   9 #include <config.h>
  10 #endif
  11
  12 #include <limits.h>
  13 #include <stdlib.h>
  14 #include <string.h>
  15 #include <errno.h>
  16 #include <assert.h>
  17 #include <ctype.h>
  18 #include <stdio.h>
  19
  20 #if defined(__cplusplus)        /* __cplusplus, etc. */
  21 #define class myClass
  22 #endif
  23
  24 #define YYMAJOR 1
  25 #define YYMINOR 9
  26
  27 #define CONCAT(first,second)    first #second
  28 #define CONCAT1(string,number)  CONCAT(string, number)
  29 #define CONCAT2(first,second)   #first "." #second
  30
  31 #ifdef YYPATCH
  32 #define VSTRING(a,b) CONCAT2(a,b) CONCAT1(" ",YYPATCH)
  33 #else
  34 #define VSTRING(a,b) CONCAT2(a,b)
  35 #endif
  36
  37 #define VERSION VSTRING(YYMAJOR, YYMINOR)
  38
  39 /*  machine-dependent definitions:                      */
  40
  41 /*  MAXCHAR is the largest unsigned character value     */
  42 /*  MAXTABLE is the maximum table size                  */
  43 /*  YYINT is the smallest C integer type that can be    */
  44 /*      used to address a table of size MAXTABLE        */
  45 /*  MAXYYINT is the largest value of a YYINT            */
  46 /*  MINYYINT is the most negative value of a YYINT      */
  47 /*  BITS_PER_WORD is the number of bits in a C unsigned */
  48 /*  WORDSIZE computes the number of words needed to     */
  49 /*      store n bits                                    */
  50 /*  BIT returns the value of the n-th bit starting      */
  51 /*      from r (0-indexed)                              */
  52 /*  SETBIT sets the n-th bit starting from r            */
  53
  54 #define MAXCHAR         UCHAR_MAX
  55 #ifndef MAXTABLE
  56 #define MAXTABLE        32500
  57 #endif
  58 #if MAXTABLE <= SHRT_MAX
  59 #define YYINT           short
  60 #define MAXYYINT        SHRT_MAX
  61 #define MINYYINT        SHRT_MIN
  62 #elif MAXTABLE <= INT_MAX
  63 #define YYINT           int
  64 #define MAXYYINT        INT_MAX
  65 #define MINYYINT        INT_MIN
  66 #else
  67 #error "MAXTABLE is too large for this machine architecture!"
  68 #endif
  69
  70 #define BITS_PER_WORD   ((int) sizeof (unsigned) * CHAR_BIT)
  71 #define WORDSIZE(n)     (((n)+(BITS_PER_WORD-1))/BITS_PER_WORD)
  72 #define BIT(r, n)       ((((r)[(n)/BITS_PER_WORD])>>((n)&(BITS_PER_WORD-1)))&1)
  73 #define SETBIT(r, n)    ((r)[(n)/BITS_PER_WORD]|=((unsigned)1<<((n)&(BITS_PER_WORD-1))))
  74
  75 /*  character names  */
  76
  77 #define NUL             '\0'    /*  the null character  */
  78 #define NEWLINE         '\n'    /*  line feed  */
  79 #define SP              ' '     /*  space  */
  80 #define BS              '\b'    /*  backspace  */
  81 #define HT              '\t'    /*  horizontal tab  */
  82 #define VT              '\013'  /*  vertical tab  */
  83 #define CR              '\r'    /*  carriage return  */
  84 #define FF              '\f'    /*  form feed  */
  85 #define QUOTE           '\''    /*  single quote  */
  86 #define DOUBLE_QUOTE    '\"'    /*  double quote  */
  87 #define BACKSLASH       '\\'    /*  backslash  */
  88
  89 #define UCH(c)          (unsigned char)(c)
  90
  91 /* defines for constructing filenames */
  92
  93 #if defined(VMS)
  94 #define CODE_SUFFIX     "_code.c"
  95 #define DEFINES_SUFFIX  "_tab.h"
  96 #define EXTERNS_SUFFIX  "_tab.i"
  97 #define OUTPUT_SUFFIX   "_tab.c"
  98 #else
  99 #define CODE_SUFFIX     ".code.c"
 100 #define DEFINES_SUFFIX  ".tab.h"
 101 #define EXTERNS_SUFFIX  ".tab.i"
 102 #define OUTPUT_SUFFIX   ".tab.c"
 103 #endif
 104 #define VERBOSE_SUFFIX  ".output"
 105 #define GRAPH_SUFFIX    ".dot"
 106
 107 /* keyword codes */
 108
 109 #define TOKEN 0
 110 #define LEFT 1
 111 #define RIGHT 2
 112 #define NONASSOC 3
 113 #define MARK 4
 114 #define TEXT 5
 115 #define TYPE 6
 116 #define START 7
 117 #define UNION 8
 118 #define IDENT 9
 119 #define EXPECT 10
 120 #define EXPECT_RR 11
 121 #define PURE_PARSER 12
 122 #define PARSE_PARAM 13
 123 #define LEX_PARAM 14
 124 #define POSIX_YACC 15
 125 #define TOKEN_TABLE 16
 126 #define ERROR_VERBOSE 17
 127 #define XXXDEBUG 18
 128
 129 #if defined(YYBTYACC)
 130 #define LOCATIONS 19
 131 #define DESTRUCTOR 20
 132 #define INITIAL_ACTION 21
 133 #endif
 134
 135 /*  symbol classes  */
 136
 137 #define UNKNOWN 0
 138 #define TERM 1
 139 #define NONTERM 2
 140 #define ACTION 3
 141 #define ARGUMENT 4
 142
 143 /*  the undefined value  */
 144
 145 #define UNDEFINED (-1)
 146
 147 /*  action codes  */
 148
 149 #define SHIFT 1
 150 #define REDUCE 2
 151
 152 /*  character macros  */
 153
 154 #define IS_IDENT(c)     (isalnum(c) || (c) == '_' || (c) == '.' || (c) == '$')
 155 #define IS_OCTAL(c)     ((c) >= '0' && (c) <= '7')
 156 #define NUMERIC_VALUE(c)        ((c) - '0')
 157
 158 /*  symbol macros  */
 159
 160 #define ISTOKEN(s)      ((s) < start_symbol)
 161 #define ISVAR(s)        ((s) >= start_symbol)
 162
 163 /*  storage allocation macros  */
 164
 165 #define CALLOC(k,n)     (calloc((size_t)(k),(size_t)(n)))
 166 #define FREE(x)         (free((char*)(x)))
 167 #define MALLOC(n)       (malloc((size_t)(n)))
 168 #define TCMALLOC(t,n)   ((t*) calloc((size_t)(n), sizeof(t)))
 169 #define TMALLOC(t,n)    ((t*) malloc((size_t)(n) * sizeof(t)))
 170 #define NEW(t)          ((t*)allocate(sizeof(t)))
 171 #define NEW2(n,t)       ((t*)allocate(((size_t)(n)*sizeof(t))))
 172 #define REALLOC(p,n)    (realloc((char*)(p),(size_t)(n)))
 173 #define TREALLOC(t,p,n) ((t*)realloc((char*)(p), (size_t)(n) * sizeof(t)))
 174
 175 #define DO_FREE(x)      if (x) { FREE(x); x = 0; }
 176
 177 #define NO_SPACE(p)     if (p == 0) no_space(); assert(p != 0)
 178
 179 /* messages */
 180 #define PLURAL(n) ((n) > 1 ? "s" : "")
 181
 182 /*
 183  * Features which depend indirectly on the btyacc configuration, but are not
 184  * essential.
 185  */
 186 #if defined(YYBTYACC)
 187 #define USE_HEADER_GUARDS 1
 188 #else
 189 #define USE_HEADER_GUARDS 0
 190 #endif
 191
 192 typedef char Assoc_t;
 193 typedef char Class_t;
 194 typedef YYINT Index_t;
 195 typedef YYINT Value_t;
 196
 197 /*  the structure of a symbol table entry  */
 198
 199 typedef struct bucket bucket;
 200 struct bucket
 201 {
 202     struct bucket *link;
 203     struct bucket *next;
 204     char *name;
 205     char *tag;
 206 #if defined(YYBTYACC)
 207     char **argnames;
 208     char **argtags;
 209     int  args;
 210     char *destructor;
 211 #endif
 212     Value_t value;
 213     Index_t index;
 214     Value_t prec;
 215     Class_t class;
 216     Assoc_t assoc;
 217 };
 218
 219 /*  the structure of the LR(0) state machine  */
 220
 221 typedef struct core core;
 222 struct core
 223 {
 224     struct core *next;
 225     struct core *link;
 226     Value_t number;
 227     Value_t accessing_symbol;
 228     Value_t nitems;
 229     Value_t items[1];
 230 };
 231
 232 /*  the structure used to record shifts  */
 233
 234 typedef struct shifts shifts;
 235 struct shifts
 236 {
 237     struct shifts *next;
 238     Value_t number;
 239     Value_t nshifts;
 240     Value_t shift[1];
 241 };
 242
 243 /*  the structure used to store reductions  */
 244
 245 typedef struct reductions reductions;
 246 struct reductions
 247 {
 248     struct reductions *next;
 249     Value_t number;
 250     Value_t nreds;
 251     Value_t rules[1];
 252 };
 253
 254 /*  the structure used to represent parser actions  */
 255
 256 typedef struct action action;
 257 struct action
 258 {
 259     struct action *next;
 260     Value_t symbol;
 261     Value_t number;
 262     Value_t prec;
 263     char action_code;
 264     Assoc_t assoc;
 265     char suppressed;
 266 };
 267
 268 /*  the structure used to store parse/lex parameters  */
 269 typedef struct param param;
 270 struct param
 271 {
 272     struct param *next;
 273     char *name;         /* parameter name */
 274     char *type;         /* everything before parameter name */
 275     char *type2;        /* everything after parameter name */
 276 };
 277
 278 /* global variables */
 279
 280 extern char dflag;
 281 extern char gflag;
 282 extern char iflag;
 283 extern char lflag;
 284 extern char rflag;
 285 extern char sflag;
 286 extern char tflag;
 287 extern char vflag;
 288 extern const char *symbol_prefix;
 289
 290 extern const char *myname;
 291 extern char *cptr;
 292 extern char *line;
 293 extern int lineno;
 294 extern int outline;
 295 extern int exit_code;
 296 extern int pure_parser;
 297 extern int token_table;
 298 extern int error_verbose;
 299 #if defined(YYBTYACC)
 300 extern int locations;
 301 extern int backtrack;
 302 extern int destructor;
 303 extern char *initial_action;
 304 #endif
 305
 306 extern const char *const banner[];
 307 extern const char *const xdecls[];
 308 extern const char *const tables[];
 309 extern const char *const global_vars[];
 310 extern const char *const impure_vars[];
 311 extern const char *const hdr_defs[];
 312 extern const char *const hdr_vars[];
 313 extern const char *const body_1[];
 314 extern const char *const body_vars[];
 315 extern const char *const body_2[];
 316 extern const char *const body_3[];
 317 extern const char *const trailer[];
 318
 319 extern char *code_file_name;
 320 extern char *input_file_name;
 321 extern char *defines_file_name;
 322 extern char *externs_file_name;
 323
 324 extern FILE *action_file;
 325 extern FILE *code_file;
 326 extern FILE *defines_file;
 327 extern FILE *externs_file;
 328 extern FILE *input_file;
 329 extern FILE *output_file;
 330 extern FILE *text_file;
 331 extern FILE *union_file;
 332 extern FILE *verbose_file;
 333 extern FILE *graph_file;
 334
 335 extern Value_t nitems;
 336 extern Value_t nrules;
 337 extern Value_t nsyms;
 338 extern Value_t ntokens;
 339 extern Value_t nvars;
 340 extern int ntags;
 341
 342 extern char unionized;
 343 extern char line_format[];
 344
 345 extern Value_t start_symbol;
 346 extern char **symbol_name;
 347 extern char **symbol_pname;
 348 extern Value_t *symbol_value;
 349 extern Value_t *symbol_prec;
 350 extern char *symbol_assoc;
 351
 352 #if defined(YYBTYACC)
 353 extern Value_t *symbol_pval;
 354 extern char **symbol_destructor;
 355 extern char **symbol_type_tag;
 356 #endif
 357
 358 extern Value_t *ritem;
 359 extern Value_t *rlhs;
 360 extern Value_t *rrhs;
 361 extern Value_t *rprec;
 362 extern Assoc_t *rassoc;
 363
 364 extern Value_t **derives;
 365 extern char *nullable;
 366
 367 extern bucket *first_symbol;
 368 extern bucket *last_symbol;
 369
 370 extern int nstates;
 371 extern core *first_state;
 372 extern shifts *first_shift;
 373 extern reductions *first_reduction;
 374 extern Value_t *accessing_symbol;
 375 extern core **state_table;
 376 extern shifts **shift_table;
 377 extern reductions **reduction_table;
 378 extern unsigned *LA;
 379 extern Value_t *LAruleno;
 380 extern Value_t *lookaheads;
 381 extern Value_t *goto_base;
 382 extern Value_t *goto_map;
 383 extern Value_t *from_state;
 384 extern Value_t *to_state;
 385
 386 extern action **parser;
 387 extern int SRexpect;
 388 extern int RRexpect;
 389 extern int SRtotal;
 390 extern int RRtotal;
 391 extern Value_t *SRconflicts;
 392 extern Value_t *RRconflicts;
 393 extern Value_t *defred;
 394 extern Value_t *rules_used;
 395 extern Value_t nunused;
 396 extern Value_t final_state;
 397
 398 extern Value_t *itemset;
 399 extern Value_t *itemsetend;
 400 extern unsigned *ruleset;
 401
 402 extern param *lex_param;
 403 extern param *parse_param;
 404
 405 /* global functions */
 406
 407 #ifndef GCC_NORETURN
 408 #if defined(__dead2)
 409 #define GCC_NORETURN            __dead2
 410 #elif defined(__dead)
 411 #define GCC_NORETURN            __dead
 412 #else
 413 #define GCC_NORETURN            /* nothing */
 414 #endif
 415 #endif
 416
 417 #ifndef GCC_UNUSED
 418 #if defined(__unused)
 419 #define GCC_UNUSED              __unused
 420 #else
 421 #define GCC_UNUSED              /* nothing */
 422 #endif
 423 #endif
 424
 425 #ifndef GCC_PRINTFLIKE
 426 #define GCC_PRINTFLIKE(fmt,var) /*nothing*/
 427 #endif
 428
 429 /* closure.c */
 430 extern void closure(Value_t * nucleus, int n);
 431 extern void finalize_closure(void);
 432 extern void set_first_derives(void);
 433
 434 /* error.c */
 435 extern void arg_number_disagree_warning(int a_lineno, char *a_name);
 436 extern void arg_type_disagree_warning(int a_lineno, int i, char *a_name);
 437 extern void at_error(int a_lineno, char *a_line, char *a_cptr) GCC_NORETURN;
 438 extern void at_warning(int a_lineno, int i);
 439 extern void bad_formals(void) GCC_NORETURN;
 440 extern void default_action_warning(void);
 441 struct ainfo {
 442         int a_lineno;
 443         char *a_line;
 444         char *a_cptr;
 445 };
 446 extern void destructor_redeclared_warning(const struct ainfo *);
 447 extern void dollar_error(int a_lineno, char *a_line, char *a_cptr) GCC_NORETURN;
 448 extern void dollar_warning(int a_lineno, int i);
 449 extern void fatal(const char *msg) GCC_NORETURN;
 450 extern void illegal_character(char *c_cptr) GCC_NORETURN;
 451 extern void illegal_tag(int t_lineno, char *t_line, char *t_cptr) GCC_NORETURN;
 452 extern void missing_brace(void) GCC_NORETURN;
 453 extern void no_grammar(void) GCC_NORETURN;
 454 extern void no_space(void) GCC_NORETURN;
 455 extern void open_error(const char *filename) GCC_NORETURN;
 456 extern void over_unionized(char *u_cptr) GCC_NORETURN;
 457 extern void prec_redeclared(void);
 458 extern void reprec_warning(char *s);
 459 extern void restarted_warning(void);
 460 extern void retyped_warning(char *s);
 461 extern void revalued_warning(char *s);
 462 extern void start_requires_args(char *a_name);
 463 extern void syntax_error(int st_lineno, char *st_line, char *st_cptr) GCC_NORETURN;
 464 extern void terminal_lhs(int s_lineno) GCC_NORETURN;
 465 extern void terminal_start(char *s) GCC_NORETURN;
 466 extern void tokenized_start(char *s) GCC_NORETURN;
 467 extern void undefined_goal(char *s) GCC_NORETURN;
 468 extern void undefined_symbol_warning(char *s);
 469 extern void unexpected_EOF(void) GCC_NORETURN;
 470 extern void unknown_arg_warning(int d_lineno, const char *dlr_opt, const char *d_arg, const char *d_line, const char *d_cptr);
 471 extern void unknown_rhs(int i) GCC_NORETURN;
 472 extern void unsupported_flag_warning(const char *flag, const char *details);
 473 extern void unterminated_action(const struct ainfo *);
 474 extern void unterminated_comment(const struct ainfo *) GCC_NORETURN;
 475 extern void unterminated_string(const struct ainfo *) GCC_NORETURN;
 476 extern void unterminated_text(const struct ainfo *) GCC_NORETURN;
 477 extern void unterminated_union(const struct ainfo *) GCC_NORETURN;
 478 extern void untyped_arg_warning(int a_lineno, const char *dlr_opt, const char *a_name);
 479 extern void untyped_lhs(void) GCC_NORETURN;
 480 extern void untyped_rhs(int i, char *s) GCC_NORETURN;
 481 extern void used_reserved(char *s) GCC_NORETURN;
 482 extern void unterminated_arglist(const struct ainfo *) GCC_NORETURN;
 483 extern void wrong_number_args_warning(const char *which, const char *a_name);
 484 extern void wrong_type_for_arg_warning(int i, char *a_name);
 485
 486 /* graph.c */
 487 extern void graph(void);
 488
 489 /* lalr.c */
 490 extern void lalr(void);
 491
 492 /* lr0.c */
 493 extern void lr0(void);
 494 extern void show_cores(void);
 495 extern void show_ritems(void);
 496 extern void show_rrhs(void);
 497 extern void show_shifts(void);
 498
 499 /* main.c */
 500 extern void *allocate(size_t n);
 501 extern void done(int k) GCC_NORETURN;
 502
 503 /* mkpar.c */
 504 extern void free_parser(void);
 505 extern void make_parser(void);
 506
 507 /* mstring.c */
 508 struct mstring
 509 {
 510     char *base, *ptr, *end;
 511 };
 512
 513 extern void msprintf(struct mstring *, const char *, ...) GCC_PRINTFLIKE(2,3);
 514 extern int mputchar(struct mstring *, int);
 515 extern struct mstring *msnew(void);
 516 extern char *msdone(struct mstring *);
 517 extern int strnscmp(const char *, const char *);
 518 extern unsigned int strnshash(const char *);
 519
 520 #define mputc(m, ch)    (((m)->ptr == (m)->end) \
 521                          ? mputchar(m,ch) \
 522                          : (*(m)->ptr++ = (char) (ch)))
 523
 524 /* output.c */
 525 extern void output(void);
 526
 527 /* reader.c */
 528 extern void reader(void);
 529
 530 /* skeleton.c (generated by skel2c) */
 531 extern void write_section(FILE * fp, const char *const section[]);
 532
 533 /* symtab.c */
 534 extern bucket *make_bucket(const char *);
 535 extern bucket *lookup(const char *);
 536 extern void create_symbol_table(void);
 537 extern void free_symbol_table(void);
 538 extern void free_symbols(void);
 539
 540 /* verbose.c */
 541 extern void verbose(void);
 542
 543 /* warshall.c */
 544 extern void reflexive_transitive_closure(unsigned *R, int n);
 545
 546 #ifdef DEBUG
 547     /* closure.c */
 548 extern void print_closure(int n);
 549 extern void print_EFF(void);
 550 extern void print_first_derives(void);
 551     /* lr0.c */
 552 extern void print_derives(void);
 553 #endif
 554
 555 #ifdef NO_LEAKS
 556 extern void lr0_leaks(void);
 557 extern void lalr_leaks(void);
 558 extern void mkpar_leaks(void);
 559 extern void output_leaks(void);
 560 extern void mstring_leaks(void);
 561 extern void reader_leaks(void);
 562 #endif