external/bsd/byacc/dist/defs.h

   1 /*      $NetBSD: defs.h,v 1.5 2011/09/10 21:29:04 christos Exp $        */
   2
   3 #if HAVE_NBTOOL_CONFIG_H
   4 #include "nbtool_config.h"
   5 #endif
   6 /* Id: defs.h,v 1.35 2011/09/07 08:55:03 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 #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 /*  the following definitions are for the Tahoe         */
  36 /*  they might have to be changed for other machines    */
  37
  38 /*  MAXCHAR is the largest unsigned character value     */
  39 /*  MAXSHORT is the largest value of a C short          */
  40 /*  MINSHORT is the most negative value of a C short    */
  41 /*  MAXTABLE is the maximum table size                  */
  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         255
  50 #define MAXSHORT        32767
  51 #define MINSHORT        -32768
  52 #define MAXTABLE        32500
  53 #define BITS_PER_WORD   32
  54 #define WORDSIZE(n)     (((n)+(BITS_PER_WORD-1))/BITS_PER_WORD)
  55 #define BIT(r, n)       ((((r)[(n)>>5])>>((n)&31))&1)
  56 #define SETBIT(r, n)    ((r)[(n)>>5]|=((unsigned)1<<((n)&31)))
  57
  58 /*  character names  */
  59
  60 #define NUL             '\0'    /*  the null character  */
  61 #define NEWLINE         '\n'    /*  line feed  */
  62 #define SP              ' '     /*  space  */
  63 #define BS              '\b'    /*  backspace  */
  64 #define HT              '\t'    /*  horizontal tab  */
  65 #define VT              '\013'  /*  vertical tab  */
  66 #define CR              '\r'    /*  carriage return  */
  67 #define FF              '\f'    /*  form feed  */
  68 #define QUOTE           '\''    /*  single quote  */
  69 #define DOUBLE_QUOTE    '\"'    /*  double quote  */
  70 #define BACKSLASH       '\\'    /*  backslash  */
  71
  72 #define UCH(c)          (unsigned char)(c)
  73
  74 /* defines for constructing filenames */
  75
  76 #if defined(VMS)
  77 #define CODE_SUFFIX     "_code.c"
  78 #define DEFINES_SUFFIX  "_tab.h"
  79 #define EXTERNS_SUFFIX  "_tab.i"
  80 #define OUTPUT_SUFFIX   "_tab.c"
  81 #else
  82 #define CODE_SUFFIX     ".code.c"
  83 #define DEFINES_SUFFIX  ".tab.h"
  84 #define EXTERNS_SUFFIX  ".tab.i"
  85 #define OUTPUT_SUFFIX   ".tab.c"
  86 #endif
  87 #define VERBOSE_SUFFIX  ".output"
  88 #define GRAPH_SUFFIX    ".dot"
  89
  90 /* keyword codes */
  91
  92 #define TOKEN 0
  93 #define LEFT 1
  94 #define RIGHT 2
  95 #define NONASSOC 3
  96 #define MARK 4
  97 #define TEXT 5
  98 #define TYPE 6
  99 #define START 7
 100 #define UNION 8
 101 #define IDENT 9
 102 #define EXPECT 10
 103 #define EXPECT_RR 11
 104 #define PURE_PARSER 12
 105 #define PARSE_PARAM 13
 106 #define LEX_PARAM 14
 107 #define POSIX_YACC 15
 108
 109 /*  symbol classes  */
 110
 111 #define UNKNOWN 0
 112 #define TERM 1
 113 #define NONTERM 2
 114
 115 /*  the undefined value  */
 116
 117 #define UNDEFINED (-1)
 118
 119 /*  action codes  */
 120
 121 #define SHIFT 1
 122 #define REDUCE 2
 123
 124 /*  character macros  */
 125
 126 #define IS_IDENT(c)     (isalnum(c) || (c) == '_' || (c) == '.' || (c) == '$')
 127 #define IS_OCTAL(c)     ((c) >= '0' && (c) <= '7')
 128 #define NUMERIC_VALUE(c)        ((c) - '0')
 129
 130 /*  symbol macros  */
 131
 132 #define ISTOKEN(s)      ((s) < start_symbol)
 133 #define ISVAR(s)        ((s) >= start_symbol)
 134
 135 /*  storage allocation macros  */
 136
 137 #define CALLOC(k,n)     (calloc((size_t)(k),(size_t)(n)))
 138 #define FREE(x)         (free((char*)(x)))
 139 #define MALLOC(n)       (malloc((size_t)(n)))
 140 #define NEW(t)          ((t*)allocate(sizeof(t)))
 141 #define NEW2(n,t)       ((t*)allocate(((size_t)(n)*sizeof(t))))
 142 #define REALLOC(p,n)    (realloc((char*)(p),(size_t)(n)))
 143
 144 #define DO_FREE(x)      if (x) { FREE(x); x = 0; }
 145
 146 #define NO_SPACE(p)     if (p == 0) no_space(); assert(p != 0)
 147
 148 /* messages */
 149 #define PLURAL(n) ((n) > 1 ? "s" : "")
 150
 151 typedef char Assoc_t;
 152 typedef char Class_t;
 153 typedef short Index_t;
 154 typedef short Value_t;
 155
 156 /*  the structure of a symbol table entry  */
 157
 158 typedef struct bucket bucket;
 159 struct bucket
 160 {
 161     struct bucket *link;
 162     struct bucket *next;
 163     char *name;
 164     char *tag;
 165     Value_t value;
 166     Index_t index;
 167     Value_t prec;
 168     Class_t class;
 169     Assoc_t assoc;
 170 };
 171
 172 /*  the structure of the LR(0) state machine  */
 173
 174 typedef struct core core;
 175 struct core
 176 {
 177     struct core *next;
 178     struct core *link;
 179     Value_t number;
 180     Value_t accessing_symbol;
 181     Value_t nitems;
 182     Value_t items[1];
 183 };
 184
 185 /*  the structure used to record shifts  */
 186
 187 typedef struct shifts shifts;
 188 struct shifts
 189 {
 190     struct shifts *next;
 191     Value_t number;
 192     Value_t nshifts;
 193     Value_t shift[1];
 194 };
 195
 196 /*  the structure used to store reductions  */
 197
 198 typedef struct reductions reductions;
 199 struct reductions
 200 {
 201     struct reductions *next;
 202     Value_t number;
 203     Value_t nreds;
 204     Value_t rules[1];
 205 };
 206
 207 /*  the structure used to represent parser actions  */
 208
 209 typedef struct action action;
 210 struct action
 211 {
 212     struct action *next;
 213     Value_t symbol;
 214     Value_t number;
 215     Value_t prec;
 216     char action_code;
 217     Assoc_t assoc;
 218     char suppressed;
 219 };
 220
 221 /*  the structure used to store parse/lex parameters  */
 222 typedef struct param param;
 223 struct param
 224 {
 225     struct param *next;
 226     char *name;         /* parameter name */
 227     char *type;         /* everything before parameter name */
 228     char *type2;        /* everything after parameter name */
 229 };
 230
 231 /* global variables */
 232
 233 extern char dflag;
 234 extern char gflag;
 235 extern char iflag;
 236 extern char lflag;
 237 extern char rflag;
 238 extern char tflag;
 239 extern char vflag;
 240 extern const char *symbol_prefix;
 241
 242 extern const char *myname;
 243 extern char *cptr;
 244 extern char *line;
 245 extern int lineno;
 246 extern int outline;
 247 extern int exit_code;
 248 extern int pure_parser;
 249
 250 extern const char *const banner[];
 251 extern const char *const xdecls[];
 252 extern const char *const tables[];
 253 extern const char *const global_vars[];
 254 extern const char *const impure_vars[];
 255 extern const char *const hdr_defs[];
 256 extern const char *const hdr_vars[];
 257 extern const char *const body_1[];
 258 extern const char *const body_vars[];
 259 extern const char *const body_2[];
 260 extern const char *const body_3[];
 261 extern const char *const trailer[];
 262 extern const char *const trailer_2[];
 263
 264 extern char *code_file_name;
 265 extern char *input_file_name;
 266 extern char *defines_file_name;
 267 extern char *externs_file_name;
 268
 269 extern FILE *action_file;
 270 extern FILE *code_file;
 271 extern FILE *defines_file;
 272 extern FILE *externs_file;
 273 extern FILE *input_file;
 274 extern FILE *output_file;
 275 extern FILE *text_file;
 276 extern FILE *union_file;
 277 extern FILE *verbose_file;
 278 extern FILE *graph_file;
 279
 280 extern int nitems;
 281 extern int nrules;
 282 extern int nsyms;
 283 extern int ntokens;
 284 extern int nvars;
 285 extern int ntags;
 286
 287 extern char unionized;
 288 extern char line_format[];
 289
 290 extern Value_t start_symbol;
 291 extern char **symbol_name;
 292 extern char **symbol_pname;
 293 extern Value_t *symbol_value;
 294 extern Value_t *symbol_prec;
 295 extern char *symbol_assoc;
 296
 297 extern Value_t *ritem;
 298 extern Value_t *rlhs;
 299 extern Value_t *rrhs;
 300 extern Value_t *rprec;
 301 extern Assoc_t *rassoc;
 302
 303 extern Value_t **derives;
 304 extern char *nullable;
 305
 306 extern bucket *first_symbol;
 307 extern bucket *last_symbol;
 308
 309 extern int pure_parser;
 310 extern int nstates;
 311 extern core *first_state;
 312 extern shifts *first_shift;
 313 extern reductions *first_reduction;
 314 extern Value_t *accessing_symbol;
 315 extern core **state_table;
 316 extern shifts **shift_table;
 317 extern reductions **reduction_table;
 318 extern unsigned *LA;
 319 extern Value_t *LAruleno;
 320 extern Value_t *lookaheads;
 321 extern Value_t *goto_map;
 322 extern Value_t *from_state;
 323 extern Value_t *to_state;
 324
 325 extern action **parser;
 326 extern int SRexpect;
 327 extern int RRexpect;
 328 extern int SRtotal;
 329 extern int RRtotal;
 330 extern Value_t *SRconflicts;
 331 extern Value_t *RRconflicts;
 332 extern Value_t *defred;
 333 extern Value_t *rules_used;
 334 extern Value_t nunused;
 335 extern Value_t final_state;
 336
 337 extern Value_t *itemset;
 338 extern Value_t *itemsetend;
 339 extern unsigned *ruleset;
 340
 341 extern param *lex_param;
 342 extern param *parse_param;
 343
 344 /* global functions */
 345
 346 extern bucket *lookup(const char *);
 347 extern bucket *make_bucket(const char *);
 348
 349 #ifndef GCC_NORETURN
 350 #define GCC_NORETURN            /* nothing */
 351 #endif
 352
 353 #ifndef GCC_UNUSED
 354 #define GCC_UNUSED              /* nothing */
 355 #endif
 356
 357 /* closure.c */
 358 extern void closure(Value_t * nucleus, int n);
 359 extern void finalize_closure(void);
 360 extern void set_first_derives(void);
 361
 362 /* error.c */
 363 extern void default_action_warning(void);
 364 extern void dollar_error(int a_lineno, char *a_line, char *a_cptr) GCC_NORETURN;
 365 extern void dollar_warning(int a_lineno, int i);
 366 extern void fatal(const char *msg) GCC_NORETURN;
 367 extern void illegal_character(char *c_cptr) GCC_NORETURN;
 368 extern void illegal_tag(int t_lineno, char *t_line, char *t_cptr) GCC_NORETURN;
 369 extern void missing_brace(void) GCC_NORETURN;
 370 extern void no_grammar(void) GCC_NORETURN;
 371 extern void no_space(void) GCC_NORETURN;
 372 extern void open_error(const char *filename) GCC_NORETURN;
 373 extern void over_unionized(char *u_cptr) GCC_NORETURN;
 374 extern void prec_redeclared(void);
 375 extern void reprec_warning(char *s);
 376 extern void restarted_warning(void);
 377 extern void retyped_warning(char *s);
 378 extern void revalued_warning(char *s);
 379 extern void syntax_error(int st_lineno, char *st_line, char *st_cptr) GCC_NORETURN;
 380 extern void terminal_lhs(int s_lineno) GCC_NORETURN;
 381 extern void terminal_start(char *s) GCC_NORETURN;
 382 extern void tokenized_start(char *s) GCC_NORETURN;
 383 extern void undefined_goal(char *s) GCC_NORETURN;
 384 extern void undefined_symbol_warning(char *s);
 385 extern void unexpected_EOF(void) GCC_NORETURN;
 386 extern void unknown_rhs(int i) GCC_NORETURN;
 387 extern void unterminated_action(int a_lineno, char *a_line, char *a_cptr) GCC_NORETURN;
 388 extern void unterminated_comment(int c_lineno, char *c_line, char *c_cptr) GCC_NORETURN;
 389 extern void unterminated_string(int s_lineno, char *s_line, char *s_cptr) GCC_NORETURN;
 390 extern void unterminated_text(int t_lineno, char *t_line, char *t_cptr) GCC_NORETURN;
 391 extern void unterminated_union(int u_lineno, char *u_line, char *u_cptr) GCC_NORETURN;
 392 extern void untyped_lhs(void) GCC_NORETURN;
 393 extern void untyped_rhs(int i, char *s) GCC_NORETURN;
 394 extern void used_reserved(char *s) GCC_NORETURN;
 395
 396 /* graph.c */
 397 extern void graph(void);
 398
 399 /* lalr.c */
 400 extern void create_symbol_table(void);
 401 extern void free_symbol_table(void);
 402 extern void free_symbols(void);
 403
 404 /* lalr.c */
 405 extern void lalr(void);
 406
 407 /* lr0.c */
 408 extern void lr0(void);
 409 extern void show_cores(void);
 410 extern void show_ritems(void);
 411 extern void show_rrhs(void);
 412 extern void show_shifts(void);
 413
 414 /* main.c */
 415 extern void *allocate(size_t n);
 416 extern void done(int k) GCC_NORETURN;
 417
 418 /* mkpar.c */
 419 extern void free_parser(void);
 420 extern void make_parser(void);
 421
 422 /* output.c */
 423 extern void output(void);
 424
 425 /* reader.c */
 426 extern void reader(void);
 427
 428 /* skeleton.c */
 429 extern void write_section(FILE *fp, const char *const section[]);
 430
 431 /* verbose.c */
 432 extern void verbose(void);
 433
 434 /* warshall.c */
 435 extern void reflexive_transitive_closure(unsigned *R, int n);
 436
 437 #ifdef NO_LEAKS
 438 extern void lr0_leaks(void);
 439 extern void lalr_leaks(void);
 440 extern void mkpar_leaks(void);
 441 extern void output_leaks(void);
 442 extern void reader_leaks(void);
 443 #endif