contrib/byacc/defs.h

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