external/bsd/byacc/dist/defs.h

   1 /*      $NetBSD: defs.h,v 1.6 2013/04/06 14:52:24 christos Exp $        */
   2
   3 #if HAVE_NBTOOL_CONFIG_H
   4 #include "nbtool_config.h"
   5 #endif
   6 /* Id: defs.h,v 1.37 2012/05/26 15:23:00 tom Exp  */
   7
   8 #ifdef HAVE_CONFIG_H
   9 #include <config.h>
  10 #endif
  11
  12 #include <stdlib.h>
  13 #include <string.h>
  14 #include <errno.h>
  15 #include <assert.h>
  16 #include <ctype.h>
  17 #include <stdio.h>
  18
  19 #if defined(__cplusplus)        /* __cplusplus, etc. */
  20 #define class myClass
  21 #endif
  22
  23 #define YYMAJOR 1
  24 #define YYMINOR 9
  25
  26 #define CONCAT(first,second)    first #second
  27 #define CONCAT1(string,number)  CONCAT(string, number)
  28 #define CONCAT2(first,second)   #first "." #second
  29
  30 #ifdef YYPATCH
  31 #define VSTRING(a,b) CONCAT2(a,b) CONCAT1(" ",YYPATCH)
  32 #else
  33 #define VSTRING(a,b) CONCAT2(a,b)
  34 #endif
  35
  36 #define VERSION VSTRING(YYMAJOR, YYMINOR)
  37
  38 /*  machine-dependent definitions                       */
  39 /*  the following definitions are for the Tahoe         */
  40 /*  they might have to be changed for other machines    */
  41
  42 /*  MAXCHAR is the largest unsigned character value     */
  43 /*  MAXSHORT is the largest value of a C short          */
  44 /*  MINSHORT is the most negative value of a C short    */
  45 /*  MAXTABLE is the maximum table size                  */
  46 /*  BITS_PER_WORD is the number of bits in a C unsigned */
  47 /*  WORDSIZE computes the number of words needed to     */
  48 /*      store n bits                                    */
  49 /*  BIT returns the value of the n-th bit starting      */
  50 /*      from r (0-indexed)                              */
  51 /*  SETBIT sets the n-th bit starting from r            */
  52
  53 #define MAXCHAR         255
  54 #define MAXSHORT        32767
  55 #define MINSHORT        -32768
  56 #define MAXTABLE        32500
  57 #define BITS_PER_WORD   32
  58 #define WORDSIZE(n)     (((n)+(BITS_PER_WORD-1))/BITS_PER_WORD)
  59 #define BIT(r, n)       ((((r)[(n)>>5])>>((n)&31))&1)
  60 #define SETBIT(r, n)    ((r)[(n)>>5]|=((unsigned)1<<((n)&31)))
  61
  62 /*  character names  */
  63
  64 #define NUL             '\0'    /*  the null character  */
  65 #define NEWLINE         '\n'    /*  line feed  */
  66 #define SP              ' '     /*  space  */
  67 #define BS              '\b'    /*  backspace  */
  68 #define HT              '\t'    /*  horizontal tab  */
  69 #define VT              '\013'  /*  vertical tab  */
  70 #define CR              '\r'    /*  carriage return  */
  71 #define FF              '\f'    /*  form feed  */
  72 #define QUOTE           '\''    /*  single quote  */
  73 #define DOUBLE_QUOTE    '\"'    /*  double quote  */
  74 #define BACKSLASH       '\\'    /*  backslash  */
  75
  76 #define UCH(c)          (unsigned char)(c)
  77
  78 /* defines for constructing filenames */
  79
  80 #if defined(VMS)
  81 #define CODE_SUFFIX     "_code.c"
  82 #define DEFINES_SUFFIX  "_tab.h"
  83 #define EXTERNS_SUFFIX  "_tab.i"
  84 #define OUTPUT_SUFFIX   "_tab.c"
  85 #else
  86 #define CODE_SUFFIX     ".code.c"
  87 #define DEFINES_SUFFIX  ".tab.h"
  88 #define EXTERNS_SUFFIX  ".tab.i"
  89 #define OUTPUT_SUFFIX   ".tab.c"
  90 #endif
  91 #define VERBOSE_SUFFIX  ".output"
  92 #define GRAPH_SUFFIX    ".dot"
  93
  94 /* keyword codes */
  95
  96 #define TOKEN 0
  97 #define LEFT 1
  98 #define RIGHT 2
  99 #define NONASSOC 3
 100 #define MARK 4
 101 #define TEXT 5
 102 #define TYPE 6
 103 #define START 7
 104 #define UNION 8
 105 #define IDENT 9
 106 #define EXPECT 10
 107 #define EXPECT_RR 11
 108 #define PURE_PARSER 12
 109 #define PARSE_PARAM 13
 110 #define LEX_PARAM 14
 111 #define POSIX_YACC 15
 112
 113 /*  symbol classes  */
 114
 115 #define UNKNOWN 0
 116 #define TERM 1
 117 #define NONTERM 2
 118
 119 /*  the undefined value  */
 120
 121 #define UNDEFINED (-1)
 122
 123 /*  action codes  */
 124
 125 #define SHIFT 1
 126 #define REDUCE 2
 127
 128 /*  character macros  */
 129
 130 #define IS_IDENT(c)     (isalnum(c) || (c) == '_' || (c) == '.' || (c) == '$')
 131 #define IS_OCTAL(c)     ((c) >= '0' && (c) <= '7')
 132 #define NUMERIC_VALUE(c)        ((c) - '0')
 133
 134 /*  symbol macros  */
 135
 136 #define ISTOKEN(s)      ((s) < start_symbol)
 137 #define ISVAR(s)        ((s) >= start_symbol)
 138
 139 /*  storage allocation macros  */
 140
 141 #define CALLOC(k,n)     (calloc((size_t)(k),(size_t)(n)))
 142 #define FREE(x)         (free((char*)(x)))
 143 #define MALLOC(n)       (malloc((size_t)(n)))
 144 #define TMALLOC(t,n)    ((t*) malloc((size_t)(n) * sizeof(t)))
 145 #define NEW(t)          ((t*)allocate(sizeof(t)))
 146 #define NEW2(n,t)       ((t*)allocate(((size_t)(n)*sizeof(t))))
 147 #define REALLOC(p,n)    (realloc((char*)(p),(size_t)(n)))
 148 #define TREALLOC(t,p,n) ((t*)realloc((char*)(p), (size_t)(n) * sizeof(t)))
 149
 150 #define DO_FREE(x)      if (x) { FREE(x); x = 0; }
 151
 152 #define NO_SPACE(p)     if (p == 0) no_space(); assert(p != 0)
 153
 154 /* messages */
 155 #define PLURAL(n) ((n) > 1 ? "s" : "")
 156
 157 typedef char Assoc_t;
 158 typedef char Class_t;
 159 typedef short Index_t;
 160 typedef short Value_t;
 161
 162 /*  the structure of a symbol table entry  */
 163
 164 typedef struct bucket bucket;
 165 struct bucket
 166 {
 167     struct bucket *link;
 168     struct bucket *next;
 169     char *name;
 170     char *tag;
 171     Value_t value;
 172     Index_t index;
 173     Value_t prec;
 174     Class_t class;
 175     Assoc_t assoc;
 176 };
 177
 178 /*  the structure of the LR(0) state machine  */
 179
 180 typedef struct core core;
 181 struct core
 182 {
 183     struct core *next;
 184     struct core *link;
 185     Value_t number;
 186     Value_t accessing_symbol;
 187     Value_t nitems;
 188     Value_t items[1];
 189 };
 190
 191 /*  the structure used to record shifts  */
 192
 193 typedef struct shifts shifts;
 194 struct shifts
 195 {
 196     struct shifts *next;
 197     Value_t number;
 198     Value_t nshifts;
 199     Value_t shift[1];
 200 };
 201
 202 /*  the structure used to store reductions  */
 203
 204 typedef struct reductions reductions;
 205 struct reductions
 206 {
 207     struct reductions *next;
 208     Value_t number;
 209     Value_t nreds;
 210     Value_t rules[1];
 211 };
 212
 213 /*  the structure used to represent parser actions  */
 214
 215 typedef struct action action;
 216 struct action
 217 {
 218     struct action *next;
 219     Value_t symbol;
 220     Value_t number;
 221     Value_t prec;
 222     char action_code;
 223     Assoc_t assoc;
 224     char suppressed;
 225 };
 226
 227 /*  the structure used to store parse/lex parameters  */
 228 typedef struct param param;
 229 struct param
 230 {
 231     struct param *next;
 232     char *name;         /* parameter name */
 233     char *type;         /* everything before parameter name */
 234     char *type2;        /* everything after parameter name */
 235 };
 236
 237 /* global variables */
 238
 239 extern char dflag;
 240 extern char gflag;
 241 extern char iflag;
 242 extern char lflag;
 243 extern char rflag;
 244 extern char sflag;
 245 extern char tflag;
 246 extern char vflag;
 247 extern const char *symbol_prefix;
 248
 249 extern const char *myname;
 250 extern char *cptr;
 251 extern char *line;
 252 extern int lineno;
 253 extern int outline;
 254 extern int exit_code;
 255 extern int pure_parser;
 256
 257 extern const char *const banner[];
 258 extern const char *const xdecls[];
 259 extern const char *const tables[];
 260 extern const char *const global_vars[];
 261 extern const char *const impure_vars[];
 262 extern const char *const hdr_defs[];
 263 extern const char *const hdr_vars[];
 264 extern const char *const body_1[];
 265 extern const char *const body_vars[];
 266 extern const char *const body_2[];
 267 extern const char *const body_3[];
 268 extern const char *const trailer[];
 269 extern const char *const trailer_2[];
 270
 271 extern char *code_file_name;
 272 extern char *input_file_name;
 273 extern char *defines_file_name;
 274 extern char *externs_file_name;
 275
 276 extern FILE *action_file;
 277 extern FILE *code_file;
 278 extern FILE *defines_file;
 279 extern FILE *externs_file;
 280 extern FILE *input_file;
 281 extern FILE *output_file;
 282 extern FILE *text_file;
 283 extern FILE *union_file;
 284 extern FILE *verbose_file;
 285 extern FILE *graph_file;
 286
 287 extern int nitems;
 288 extern int nrules;
 289 extern int nsyms;
 290 extern int ntokens;
 291 extern int nvars;
 292 extern int ntags;
 293
 294 extern char unionized;
 295 extern char line_format[];
 296
 297 extern Value_t start_symbol;
 298 extern char **symbol_name;
 299 extern char **symbol_pname;
 300 extern Value_t *symbol_value;
 301 extern Value_t *symbol_prec;
 302 extern char *symbol_assoc;
 303
 304 extern Value_t *ritem;
 305 extern Value_t *rlhs;
 306 extern Value_t *rrhs;
 307 extern Value_t *rprec;
 308 extern Assoc_t *rassoc;
 309
 310 extern Value_t **derives;
 311 extern char *nullable;
 312
 313 extern bucket *first_symbol;
 314 extern bucket *last_symbol;
 315
 316 extern int nstates;
 317 extern core *first_state;
 318 extern shifts *first_shift;
 319 extern reductions *first_reduction;
 320 extern Value_t *accessing_symbol;
 321 extern core **state_table;
 322 extern shifts **shift_table;
 323 extern reductions **reduction_table;
 324 extern unsigned *LA;
 325 extern Value_t *LAruleno;
 326 extern Value_t *lookaheads;
 327 extern Value_t *goto_map;
 328 extern Value_t *from_state;
 329 extern Value_t *to_state;
 330
 331 extern action **parser;
 332 extern int SRexpect;
 333 extern int RRexpect;
 334 extern int SRtotal;
 335 extern int RRtotal;
 336 extern Value_t *SRconflicts;
 337 extern Value_t *RRconflicts;
 338 extern Value_t *defred;
 339 extern Value_t *rules_used;
 340 extern Value_t nunused;
 341 extern Value_t final_state;
 342
 343 extern Value_t *itemset;
 344 extern Value_t *itemsetend;
 345 extern unsigned *ruleset;
 346
 347 extern param *lex_param;
 348 extern param *parse_param;
 349
 350 /* global functions */
 351
 352 extern bucket *lookup(const char *);
 353 extern bucket *make_bucket(const char *);
 354
 355 #ifndef GCC_NORETURN
 356 #if defined(__dead2)
 357 #define GCC_NORETURN            __dead2
 358 #elif defined(__dead)
 359 #define GCC_NORETURN            __dead
 360 #else
 361 #define GCC_NORETURN            /* nothing */
 362 #endif
 363 #endif
 364
 365 #ifndef GCC_UNUSED
 366 #if defined(__unused)
 367 #define GCC_UNUSED              __unused
 368 #else
 369 #define GCC_UNUSED              /* nothing */
 370 #endif
 371 #endif
 372
 373 /* closure.c */
 374 extern void closure(Value_t * nucleus, int n);
 375 extern void finalize_closure(void);
 376 extern void set_first_derives(void);
 377
 378 /* error.c */
 379 extern void default_action_warning(void);
 380 extern void dollar_error(int a_lineno, char *a_line, char *a_cptr) GCC_NORETURN;
 381 extern void dollar_warning(int a_lineno, int i);
 382 extern void fatal(const char *msg) GCC_NORETURN;
 383 extern void illegal_character(char *c_cptr) GCC_NORETURN;
 384 extern void illegal_tag(int t_lineno, char *t_line, char *t_cptr) GCC_NORETURN;
 385 extern void missing_brace(void) GCC_NORETURN;
 386 extern void no_grammar(void) GCC_NORETURN;
 387 extern void no_space(void) GCC_NORETURN;
 388 extern void open_error(const char *filename) GCC_NORETURN;
 389 extern void over_unionized(char *u_cptr) GCC_NORETURN;
 390 extern void prec_redeclared(void);
 391 extern void reprec_warning(char *s);
 392 extern void restarted_warning(void);
 393 extern void retyped_warning(char *s);
 394 extern void revalued_warning(char *s);
 395 extern void syntax_error(int st_lineno, char *st_line, char *st_cptr) GCC_NORETURN;
 396 extern void terminal_lhs(int s_lineno) GCC_NORETURN;
 397 extern void terminal_start(char *s) GCC_NORETURN;
 398 extern void tokenized_start(char *s) GCC_NORETURN;
 399 extern void undefined_goal(char *s) GCC_NORETURN;
 400 extern void undefined_symbol_warning(char *s);
 401 extern void unexpected_EOF(void) GCC_NORETURN;
 402 extern void unknown_rhs(int i) GCC_NORETURN;
 403 extern void unterminated_action(int a_lineno, char *a_line, char *a_cptr) GCC_NORETURN;
 404 extern void unterminated_comment(int c_lineno, char *c_line, char *c_cptr) GCC_NORETURN;
 405 extern void unterminated_string(int s_lineno, char *s_line, char *s_cptr) GCC_NORETURN;
 406 extern void unterminated_text(int t_lineno, char *t_line, char *t_cptr) GCC_NORETURN;
 407 extern void unterminated_union(int u_lineno, char *u_line, char *u_cptr) GCC_NORETURN;
 408 extern void untyped_lhs(void) GCC_NORETURN;
 409 extern void untyped_rhs(int i, char *s) GCC_NORETURN;
 410 extern void used_reserved(char *s) GCC_NORETURN;
 411
 412 /* graph.c */
 413 extern void graph(void);
 414
 415 /* lalr.c */
 416 extern void create_symbol_table(void);
 417 extern void free_symbol_table(void);
 418 extern void free_symbols(void);
 419
 420 /* lalr.c */
 421 extern void lalr(void);
 422
 423 /* lr0.c */
 424 extern void lr0(void);
 425 extern void show_cores(void);
 426 extern void show_ritems(void);
 427 extern void show_rrhs(void);
 428 extern void show_shifts(void);
 429
 430 /* main.c */
 431 extern void *allocate(size_t n);
 432 extern void done(int k) GCC_NORETURN;
 433
 434 /* mkpar.c */
 435 extern void free_parser(void);
 436 extern void make_parser(void);
 437
 438 /* output.c */
 439 extern void output(void);
 440
 441 /* reader.c */
 442 extern void reader(void);
 443
 444 /* skeleton.c */
 445 extern void write_section(FILE * fp, const char *const section[]);
 446
 447 /* verbose.c */
 448 extern void verbose(void);
 449
 450 /* warshall.c */
 451 extern void reflexive_transitive_closure(unsigned *R, int n);
 452
 453 #ifdef NO_LEAKS
 454 extern void lr0_leaks(void);
 455 extern void lalr_leaks(void);
 456 extern void mkpar_leaks(void);
 457 extern void output_leaks(void);
 458 extern void reader_leaks(void);
 459 #endif