external/bsd/byacc/dist/defs.h

   1 /* Id: defs.h,v 1.20 2009/10/27 10:47:43 tom Exp */
   2
   3 #if HAVE_NBTOOL_CONFIG_H
   4 #include "nbtool_config.h"
   5 #endif
   6
   7 #ifdef HAVE_CONFIG_H
   8 #include <config.h>
   9 #endif
  10
  11 #include <stdlib.h>
  12 #include <string.h>
  13 #include <errno.h>
  14 #include <assert.h>
  15 #include <ctype.h>
  16 #include <stdio.h>
  17
  18 #define YYMAJOR 1
  19 #define YYMINOR 9
  20
  21 #define CONCAT(first,second)    first #second
  22 #define CONCAT1(string,number)  CONCAT(string, number)
  23 #define CONCAT2(first,second)   #first "." #second
  24
  25 #ifdef YYPATCH
  26 #define VSTRING(a,b) CONCAT2(a,b) CONCAT1(" ",YYPATCH)
  27 #else
  28 #define VSTRING(a,b) CONCAT2(a,b)
  29 #endif
  30
  31 #define VERSION VSTRING(YYMAJOR, YYMINOR)
  32
  33 /*  machine-dependent definitions                       */
  34 /*  the following definitions are for the Tahoe         */
  35 /*  they might have to be changed for other machines    */
  36
  37 /*  MAXCHAR is the largest unsigned character value     */
  38 /*  MAXSHORT is the largest value of a C short          */
  39 /*  MINSHORT is the most negative value of a C short    */
  40 /*  MAXTABLE is the maximum table size                  */
  41 /*  BITS_PER_WORD is the number of bits in a C unsigned */
  42 /*  WORDSIZE computes the number of words needed to     */
  43 /*      store n bits                                    */
  44 /*  BIT returns the value of the n-th bit starting      */
  45 /*      from r (0-indexed)                              */
  46 /*  SETBIT sets the n-th bit starting from r            */
  47
  48 #define MAXCHAR         255
  49 #define MAXSHORT        32767
  50 #define MINSHORT        -32768
  51 #define MAXTABLE        32500
  52 #define BITS_PER_WORD   32
  53 #define WORDSIZE(n)     (((n)+(BITS_PER_WORD-1))/BITS_PER_WORD)
  54 #define BIT(r, n)       ((((r)[(n)>>5])>>((n)&31))&1)
  55 #define SETBIT(r, n)    ((r)[(n)>>5]|=((unsigned)1<<((n)&31)))
  56
  57 /*  character names  */
  58
  59 #define NUL             '\0'    /*  the null character  */
  60 #define NEWLINE         '\n'    /*  line feed  */
  61 #define SP              ' '     /*  space  */
  62 #define BS              '\b'    /*  backspace  */
  63 #define HT              '\t'    /*  horizontal tab  */
  64 #define VT              '\013'  /*  vertical tab  */
  65 #define CR              '\r'    /*  carriage return  */
  66 #define FF              '\f'    /*  form feed  */
  67 #define QUOTE           '\''    /*  single quote  */
  68 #define DOUBLE_QUOTE    '\"'    /*  double quote  */
  69 #define BACKSLASH       '\\'    /*  backslash  */
  70
  71 /* defines for constructing filenames */
  72
  73 #if defined(VMS)
  74 #define CODE_SUFFIX     "_code.c"
  75 #define DEFINES_SUFFIX  "_tab.h"
  76 #define OUTPUT_SUFFIX   "_tab.c"
  77 #else
  78 #define CODE_SUFFIX     ".code.c"
  79 #define DEFINES_SUFFIX  ".tab.h"
  80 #define OUTPUT_SUFFIX   ".tab.c"
  81 #endif
  82 #define VERBOSE_SUFFIX  ".output"
  83 #define GRAPH_SUFFIX    ".dot"
  84
  85 /* keyword codes */
  86
  87 #define TOKEN 0
  88 #define LEFT 1
  89 #define RIGHT 2
  90 #define NONASSOC 3
  91 #define MARK 4
  92 #define TEXT 5
  93 #define TYPE 6
  94 #define START 7
  95 #define UNION 8
  96 #define IDENT 9
  97 #define EXPECT 10
  98 #define EXPECT_RR 11
  99 #define PURE_PARSER 12
 100 #define PARSE_PARAM 13
 101 #define LEX_PARAM 14
 102
 103 /*  symbol classes  */
 104
 105 #define UNKNOWN 0
 106 #define TERM 1
 107 #define NONTERM 2
 108
 109 /*  the undefined value  */
 110
 111 #define UNDEFINED (-1)
 112
 113 /*  action codes  */
 114
 115 #define SHIFT 1
 116 #define REDUCE 2
 117
 118 /*  character macros  */
 119
 120 #define IS_IDENT(c)     (isalnum(c) || (c) == '_' || (c) == '.' || (c) == '$')
 121 #define IS_OCTAL(c)     ((c) >= '0' && (c) <= '7')
 122 #define NUMERIC_VALUE(c)        ((c) - '0')
 123
 124 /*  symbol macros  */
 125
 126 #define ISTOKEN(s)      ((s) < start_symbol)
 127 #define ISVAR(s)        ((s) >= start_symbol)
 128
 129 /*  storage allocation macros  */
 130
 131 #define CALLOC(k,n)     (calloc((unsigned)(k),(unsigned)(n)))
 132 #define FREE(x)         (free((char*)(x)))
 133 #define MALLOC(n)       (malloc((unsigned)(n)))
 134 #define NEW(t)          ((t*)allocate(sizeof(t)))
 135 #define NEW2(n,t)       ((t*)allocate(((unsigned)(n)*sizeof(t))))
 136 #define REALLOC(p,n)    (realloc((char*)(p),(unsigned)(n)))
 137
 138 #define DO_FREE(x)      if (x) { FREE(x); x = 0; }
 139
 140 /* messages */
 141 #define PLURAL(n) ((n) > 1 ? "s" : "")
 142
 143 typedef char Assoc_t;
 144 typedef char Class_t;
 145 typedef short Index_t;
 146 typedef short Value_t;
 147
 148 /*  the structure of a symbol table entry  */
 149
 150 typedef struct bucket bucket;
 151 struct bucket
 152 {
 153     struct bucket *link;
 154     struct bucket *next;
 155     char *name;
 156     char *tag;
 157     Value_t value;
 158     Index_t index;
 159     Value_t prec;
 160     Class_t class;
 161     Assoc_t assoc;
 162 };
 163
 164 /*  the structure of the LR(0) state machine  */
 165
 166 typedef struct core core;
 167 struct core
 168 {
 169     struct core *next;
 170     struct core *link;
 171     Value_t number;
 172     Value_t accessing_symbol;
 173     Value_t nitems;
 174     Value_t items[1];
 175 };
 176
 177 /*  the structure used to record shifts  */
 178
 179 typedef struct shifts shifts;
 180 struct shifts
 181 {
 182     struct shifts *next;
 183     Value_t number;
 184     Value_t nshifts;
 185     Value_t shift[1];
 186 };
 187
 188 typedef struct param param;
 189 struct param {
 190     struct param *next;
 191     char *name;
 192     char *type;
 193 };
 194
 195 /*  the structure used to store reductions  */
 196
 197 typedef struct reductions reductions;
 198 struct reductions
 199 {
 200     struct reductions *next;
 201     Value_t number;
 202     Value_t nreds;
 203     Value_t rules[1];
 204 };
 205
 206 /*  the structure used to represent parser actions  */
 207
 208 typedef struct action action;
 209 struct action
 210 {
 211     struct action *next;
 212     Value_t symbol;
 213     Value_t number;
 214     Value_t prec;
 215     char action_code;
 216     Assoc_t assoc;
 217     char suppressed;
 218 };
 219
 220 /* global variables */
 221
 222 extern char dflag;
 223 extern char gflag;
 224 extern char lflag;
 225 extern char rflag;
 226 extern char tflag;
 227 extern char vflag;
 228 extern const char *symbol_prefix;
 229
 230 extern const char *myname;
 231 extern char *cptr;
 232 extern char *line;
 233 extern int lineno;
 234 extern int outline;
 235 extern int exit_code;
 236 extern int pure_parser;
 237
 238 extern const char * const banner[];
 239 extern const char * const tables[];
 240 extern const char * const header[];
 241 extern const char * const body[];
 242 extern const char * const trailer[];
 243
 244 extern char *code_file_name;
 245 extern char *defines_file_name;
 246 extern const char *input_file_name;
 247 extern char *output_file_name;
 248 extern char *verbose_file_name;
 249 extern char *graph_file_name;
 250
 251 extern FILE *action_file;
 252 extern FILE *code_file;
 253 extern FILE *defines_file;
 254 extern FILE *input_file;
 255 extern FILE *output_file;
 256 extern FILE *text_file;
 257 extern FILE *union_file;
 258 extern FILE *verbose_file;
 259 extern FILE *graph_file;
 260
 261 extern int nitems;
 262 extern int nrules;
 263 extern int nsyms;
 264 extern int ntokens;
 265 extern int nvars;
 266 extern int ntags;
 267
 268 extern char unionized;
 269 extern char line_format[];
 270
 271 extern Value_t start_symbol;
 272 extern char **symbol_name;
 273 extern char **symbol_pname;
 274 extern Value_t *symbol_value;
 275 extern Value_t *symbol_prec;
 276 extern char *symbol_assoc;
 277
 278 extern Value_t *ritem;
 279 extern Value_t *rlhs;
 280 extern Value_t *rrhs;
 281 extern Value_t *rprec;
 282 extern Assoc_t *rassoc;
 283
 284 extern Value_t **derives;
 285 extern char *nullable;
 286
 287 extern bucket *first_symbol;
 288 extern bucket *last_symbol;
 289
 290 extern int nstates;
 291 extern core *first_state;
 292 extern shifts *first_shift;
 293 extern reductions *first_reduction;
 294 extern Value_t *accessing_symbol;
 295 extern core **state_table;
 296 extern shifts **shift_table;
 297 extern reductions **reduction_table;
 298 extern unsigned *LA;
 299 extern Value_t *LAruleno;
 300 extern Value_t *lookaheads;
 301 extern Value_t *goto_map;
 302 extern Value_t *from_state;
 303 extern Value_t *to_state;
 304
 305 extern action **parser;
 306 extern int SRexpect;
 307 extern int RRexpect;
 308 extern int SRtotal;
 309 extern int RRtotal;
 310 extern Value_t *SRconflicts;
 311 extern Value_t *RRconflicts;
 312 extern Value_t *defred;
 313 extern Value_t *rules_used;
 314 extern Value_t nunused;
 315 extern Value_t final_state;
 316
 317 extern Value_t *itemset;
 318 extern Value_t *itemsetend;
 319 extern unsigned *ruleset;
 320
 321 extern param *lex_param;
 322 extern param *parse_param;
 323
 324 /* global functions */
 325
 326 extern bucket *lookup(const char *);
 327 extern bucket *make_bucket(const char *);
 328
 329 #ifndef GCC_NORETURN
 330 #define GCC_NORETURN            /* nothing */
 331 #endif
 332
 333 #ifndef GCC_UNUSED
 334 #define GCC_UNUSED              /* nothing */
 335 #endif
 336
 337 /* closure.c */
 338 extern void closure(Value_t *nucleus, int n);
 339 extern void finalize_closure(void);
 340 extern void set_first_derives(void);
 341
 342 /* error.c */
 343 extern void default_action_warning(void);
 344 extern void dollar_error(int a_lineno, char *a_line, char *a_cptr);
 345 extern void dollar_warning(int a_lineno, int i);
 346 extern void fatal(const char *msg);
 347 extern void illegal_character(char *c_cptr);
 348 extern void illegal_tag(int t_lineno, char *t_line, char *t_cptr);
 349 extern void no_grammar(void);
 350 extern void no_space(void);
 351 extern void open_error(const char *filename);
 352 extern void over_unionized(char *u_cptr);
 353 extern void prec_redeclared(void);
 354 extern void print_pos(char *st_line, char *st_cptr);
 355 extern void reprec_warning(char *s);
 356 extern void restarted_warning(void);
 357 extern void retyped_warning(char *s);
 358 extern void revalued_warning(char *s);
 359 extern __dead void syntax_error(int st_lineno, char *st_line, char *st_cptr) GCC_NORETURN;
 360 extern void terminal_lhs(int s_lineno);
 361 extern void terminal_start(char *s);
 362 extern void tokenized_start(char *s);
 363 extern void undefined_goal(char *s);
 364 extern void undefined_symbol_warning(char *s);
 365 extern void unexpected_EOF(void);
 366 extern void unknown_rhs(int i);
 367 extern void unterminated_action(int a_lineno, char *a_line, char *a_cptr);
 368 extern void unterminated_comment(int c_lineno, char *c_line, char *c_cptr);
 369 extern void unterminated_string(int s_lineno, char *s_line, char *s_cptr);
 370 extern void unterminated_text(int t_lineno, char *t_line, char *t_cptr);
 371 extern void unterminated_union(int u_lineno, char *u_line, char *u_cptr);
 372 extern void untyped_lhs(void);
 373 extern void untyped_rhs(int i, char *s);
 374 extern void used_reserved(char *s);
 375
 376 /* graph.c */
 377 extern void graph(void);
 378
 379 /* lalr.c */
 380 extern int hash(const char *name);
 381 extern void create_symbol_table(void);
 382 extern void free_symbol_table(void);
 383 extern void free_symbols(void);
 384
 385 /* lalr.c */
 386 extern void lalr(void);
 387
 388 /* lr0.c */
 389 extern void lr0(void);
 390 extern void show_cores(void);
 391 extern void show_ritems(void);
 392 extern void show_rrhs(void);
 393 extern void show_shifts(void);
 394
 395 /* main.c */
 396 extern char *allocate(unsigned n);
 397 extern void done(int k) GCC_NORETURN;
 398
 399 /* mkpar.c */
 400 extern void free_parser(void);
 401 extern void make_parser(void);
 402
 403 /* output.c */
 404 extern void output(void);
 405
 406 /* reader.c */
 407 extern void reader(void);
 408
 409 /* skeleton.c */
 410 extern void write_section(const char * const section[], int);
 411
 412 /* verbose.c */
 413 extern void verbose(void);
 414
 415 /* warshall.c */
 416 extern void reflexive_transitive_closure(unsigned *R, int n);
 417
 418 #ifdef NO_LEAKS
 419 extern void lr0_leaks(void);
 420 extern void lalr_leaks(void);
 421 extern void mkpar_leaks(void);
 422 extern void output_leaks(void);
 423 extern void reader_leaks(void);
 424 #endif