1 /* $Id: defs.h,v 1.66 2020/09/10 20:21:20 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 2 20 #define YYMINOR 0 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 typedef enum 105 { 106 TOKEN = 0 107 ,LEFT 108 ,RIGHT 109 ,NONASSOC 110 ,MARK 111 ,TEXT 112 ,TYPE 113 ,START 114 ,UNION 115 ,IDENT 116 ,EXPECT 117 ,EXPECT_RR 118 ,PURE_PARSER 119 ,PARSE_PARAM 120 ,LEX_PARAM 121 ,POSIX_YACC 122 ,TOKEN_TABLE 123 ,ERROR_VERBOSE 124 ,XXXDEBUG 125 ,XCODE 126 127 #if defined(YYBTYACC) 128 ,LOCATIONS 129 ,DESTRUCTOR 130 ,INITIAL_ACTION 131 #endif 132 } 133 KEY_CASES; 134 135 /* symbol classes */ 136 137 typedef enum 138 { 139 UNKNOWN = 0 140 ,TERM 141 ,NONTERM 142 ,ACTION 143 ,ARGUMENT 144 } 145 SYM_CASES; 146 147 /* the undefined value */ 148 149 #define UNDEFINED (-1) 150 151 /* action codes */ 152 153 #define SHIFT 1 154 #define REDUCE 2 155 156 /* character macros */ 157 158 #define IS_NAME1(c) (isalpha(UCH(c)) || (c) == '_' || (c) == '$') 159 #define IS_NAME2(c) (isalnum(UCH(c)) || (c) == '_' || (c) == '$') 160 #define IS_IDENT(c) (isalnum(UCH(c)) || (c) == '_' || (c) == '.' || (c) == '$') 161 #define IS_OCTAL(c) ((c) >= '0' && (c) <= '7') 162 163 /* symbol macros */ 164 165 #define ISTOKEN(s) ((s) < start_symbol) 166 #define ISVAR(s) ((s) >= start_symbol) 167 168 /* storage allocation macros */ 169 170 #define CALLOC(k,n) (calloc((size_t)(k),(size_t)(n))) 171 #define FREE(x) (free((char*)(x))) 172 #define MALLOC(n) (malloc((size_t)(n))) 173 #define TCMALLOC(t,n) ((t*) calloc((size_t)(n), sizeof(t))) 174 #define TMALLOC(t,n) ((t*) malloc((size_t)(n) * sizeof(t))) 175 #define NEW(t) ((t*)allocate(sizeof(t))) 176 #define NEW2(n,t) ((t*)allocate(((size_t)(n)*sizeof(t)))) 177 #define REALLOC(p,n) (realloc((char*)(p),(size_t)(n))) 178 #define TREALLOC(t,p,n) ((t*)realloc((char*)(p), (size_t)(n) * sizeof(t))) 179 180 #define DO_FREE(x) if (x) { FREE(x); x = 0; } 181 182 #define NO_SPACE(p) if (p == 0) no_space(); assert(p != 0) 183 184 /* messages */ 185 #define PLURAL(n) ((n) > 1 ? "s" : "") 186 187 /* 188 * Features which depend indirectly on the btyacc configuration, but are not 189 * essential. 190 */ 191 #if defined(YYBTYACC) 192 #define USE_HEADER_GUARDS 1 193 #else 194 #define USE_HEADER_GUARDS 0 195 #endif 196 197 typedef char Assoc_t; 198 typedef char Class_t; 199 typedef YYINT Index_t; 200 typedef YYINT Value_t; 201 202 /* the structure of a symbol table entry */ 203 204 typedef struct bucket bucket; 205 struct bucket 206 { 207 struct bucket *link; 208 struct bucket *next; 209 char *name; 210 char *tag; 211 #if defined(YYBTYACC) 212 char **argnames; 213 char **argtags; 214 int args; 215 char *destructor; 216 #endif 217 Value_t value; 218 Index_t index; 219 Value_t prec; 220 Class_t class; 221 Assoc_t assoc; 222 }; 223 224 /* the structure of the LR(0) state machine */ 225 226 typedef struct core core; 227 struct core 228 { 229 struct core *next; 230 struct core *link; 231 Value_t number; 232 Value_t accessing_symbol; 233 Value_t nitems; 234 Value_t items[1]; 235 }; 236 237 /* the structure used to record shifts */ 238 239 typedef struct shifts shifts; 240 struct shifts 241 { 242 struct shifts *next; 243 Value_t number; 244 Value_t nshifts; 245 Value_t shift[1]; 246 }; 247 248 /* the structure used to store reductions */ 249 250 typedef struct reductions reductions; 251 struct reductions 252 { 253 struct reductions *next; 254 Value_t number; 255 Value_t nreds; 256 Value_t rules[1]; 257 }; 258 259 /* the structure used to represent parser actions */ 260 261 typedef struct action action; 262 struct action 263 { 264 struct action *next; 265 Value_t symbol; 266 Value_t number; 267 Value_t prec; 268 char action_code; 269 Assoc_t assoc; 270 char suppressed; 271 }; 272 273 /* the structure used to store parse/lex parameters */ 274 typedef struct param param; 275 struct param 276 { 277 struct param *next; 278 char *name; /* parameter name */ 279 char *type; /* everything before parameter name */ 280 char *type2; /* everything after parameter name */ 281 }; 282 283 /* global variables */ 284 285 extern char dflag2; 286 extern char dflag; 287 extern char gflag; 288 extern char iflag; 289 extern char lflag; 290 extern char rflag; 291 extern char sflag; 292 extern char tflag; 293 extern char vflag; 294 extern const char *symbol_prefix; 295 296 extern const char *myname; 297 extern char *cptr; 298 extern char *line; 299 extern int lineno; 300 extern int outline; 301 extern int exit_code; 302 extern int pure_parser; 303 extern int token_table; 304 extern int error_verbose; 305 #if defined(YYBTYACC) 306 extern int locations; 307 extern int backtrack; 308 extern int destructor; 309 extern char *initial_action; 310 #endif 311 312 extern const char *const banner[]; 313 extern const char *const xdecls[]; 314 extern const char *const tables[]; 315 extern const char *const global_vars[]; 316 extern const char *const impure_vars[]; 317 extern const char *const hdr_defs[]; 318 extern const char *const hdr_vars[]; 319 extern const char *const body_1[]; 320 extern const char *const body_vars[]; 321 extern const char *const init_vars[]; 322 extern const char *const body_2[]; 323 extern const char *const body_3[]; 324 extern const char *const trailer[]; 325 326 extern char *code_file_name; 327 extern char *input_file_name; 328 extern size_t input_file_name_len; 329 extern char *defines_file_name; 330 extern char *externs_file_name; 331 332 extern FILE *action_file; 333 extern FILE *code_file; 334 extern FILE *defines_file; 335 extern FILE *externs_file; 336 extern FILE *input_file; 337 extern FILE *output_file; 338 extern FILE *text_file; 339 extern FILE *union_file; 340 extern FILE *verbose_file; 341 extern FILE *graph_file; 342 343 extern Value_t nitems; 344 extern Value_t nrules; 345 extern Value_t nsyms; 346 extern Value_t ntokens; 347 extern Value_t nvars; 348 extern int ntags; 349 350 extern char unionized; 351 extern char line_format[]; 352 353 extern Value_t start_symbol; 354 extern char **symbol_name; 355 extern char **symbol_pname; 356 extern Value_t *symbol_value; 357 extern Value_t *symbol_prec; 358 extern char *symbol_assoc; 359 360 #if defined(YYBTYACC) 361 extern Value_t *symbol_pval; 362 extern char **symbol_destructor; 363 extern char **symbol_type_tag; 364 #endif 365 366 extern Value_t *ritem; 367 extern Value_t *rlhs; 368 extern Value_t *rrhs; 369 extern Value_t *rprec; 370 extern Assoc_t *rassoc; 371 372 extern Value_t **derives; 373 extern char *nullable; 374 375 extern bucket *first_symbol; 376 extern bucket *last_symbol; 377 378 extern int nstates; 379 extern core *first_state; 380 extern shifts *first_shift; 381 extern reductions *first_reduction; 382 extern Value_t *accessing_symbol; 383 extern core **state_table; 384 extern shifts **shift_table; 385 extern reductions **reduction_table; 386 extern unsigned *LA; 387 extern Value_t *LAruleno; 388 extern Value_t *lookaheads; 389 extern Value_t *goto_base; 390 extern Value_t *goto_map; 391 extern Value_t *from_state; 392 extern Value_t *to_state; 393 394 extern action **parser; 395 extern int SRexpect; 396 extern int RRexpect; 397 extern int SRtotal; 398 extern int RRtotal; 399 extern Value_t *SRconflicts; 400 extern Value_t *RRconflicts; 401 extern Value_t *defred; 402 extern Value_t *rules_used; 403 extern Value_t nunused; 404 extern Value_t final_state; 405 406 extern Value_t *itemset; 407 extern Value_t *itemsetend; 408 extern unsigned *ruleset; 409 410 extern param *lex_param; 411 extern param *parse_param; 412 413 /* global functions */ 414 415 #ifndef GCC_NORETURN 416 #if defined(__dead2) 417 #define GCC_NORETURN __dead2 418 #elif defined(__dead) 419 #define GCC_NORETURN __dead 420 #else 421 #define GCC_NORETURN /* nothing */ 422 #endif 423 #endif 424 425 #ifdef __GNUC__ 426 #define ATTRIBUTE_NORETURN __attribute__((noreturn)) 427 #elif defined(_MSC_VER) 428 #define ATTRIBUTE_NORETURN __declspec(noreturn) 429 #else 430 #define ATTRIBUTE_NORETURN 431 #endif 432 433 #if defined(NDEBUG) && defined(_MSC_VER) 434 #define NODEFAULT __assume(0); 435 #else 436 #define NODEFAULT 437 #endif 438 #define NOTREACHED NODEFAULT 439 440 #ifndef GCC_UNUSED 441 #if defined(__unused) 442 #define GCC_UNUSED __unused 443 #else 444 #define GCC_UNUSED /* nothing */ 445 #endif 446 #endif 447 448 #ifndef GCC_PRINTFLIKE 449 #define GCC_PRINTFLIKE(fmt,var) /*nothing */ 450 #endif 451 452 /* closure.c */ 453 extern void closure(Value_t *nucleus, int n); 454 extern void finalize_closure(void); 455 extern void set_first_derives(void); 456 457 /* error.c */ 458 struct ainfo 459 { 460 int a_lineno; 461 char *a_line; 462 char *a_cptr; 463 }; 464 465 extern void arg_number_disagree_warning(int a_lineno, char *a_name); 466 extern void arg_type_disagree_warning(int a_lineno, int i, char *a_name); 467 ATTRIBUTE_NORETURN 468 extern void at_error(int a_lineno, char *a_line, char *a_cptr) GCC_NORETURN; 469 extern void at_warning(int a_lineno, int i); 470 ATTRIBUTE_NORETURN 471 extern void bad_formals(void) GCC_NORETURN; 472 extern void default_action_warning(char *s); 473 extern void destructor_redeclared_warning(const struct ainfo *); 474 ATTRIBUTE_NORETURN 475 extern void dollar_error(int a_lineno, char *a_line, char *a_cptr) GCC_NORETURN; 476 extern void dollar_warning(int a_lineno, int i); 477 ATTRIBUTE_NORETURN 478 extern void fatal(const char *msg) GCC_NORETURN; 479 ATTRIBUTE_NORETURN 480 extern void illegal_character(char *c_cptr) GCC_NORETURN; 481 ATTRIBUTE_NORETURN 482 extern void illegal_tag(int t_lineno, char *t_line, char *t_cptr) GCC_NORETURN; 483 ATTRIBUTE_NORETURN 484 extern void missing_brace(void) GCC_NORETURN; 485 ATTRIBUTE_NORETURN 486 extern void no_grammar(void) GCC_NORETURN; 487 ATTRIBUTE_NORETURN 488 extern void no_space(void) GCC_NORETURN; 489 ATTRIBUTE_NORETURN 490 extern void open_error(const char *filename) GCC_NORETURN; 491 ATTRIBUTE_NORETURN 492 extern void over_unionized(char *u_cptr) GCC_NORETURN; 493 extern void prec_redeclared(void); 494 extern void reprec_warning(char *s); 495 extern void restarted_warning(void); 496 extern void retyped_warning(char *s); 497 extern void revalued_warning(char *s); 498 extern void start_requires_args(char *a_name); 499 ATTRIBUTE_NORETURN 500 extern void syntax_error(int st_lineno, char *st_line, char *st_cptr) GCC_NORETURN; 501 ATTRIBUTE_NORETURN 502 extern void terminal_lhs(int s_lineno) GCC_NORETURN; 503 ATTRIBUTE_NORETURN 504 extern void terminal_start(char *s) GCC_NORETURN; 505 ATTRIBUTE_NORETURN 506 extern void tokenized_start(char *s) GCC_NORETURN; 507 ATTRIBUTE_NORETURN 508 extern void undefined_goal(char *s) GCC_NORETURN; 509 extern void undefined_symbol_warning(char *s); 510 ATTRIBUTE_NORETURN 511 extern void unexpected_EOF(void) GCC_NORETURN; 512 extern void unknown_arg_warning(int d_lineno, const char *dlr_opt, 513 const char *d_arg, const char *d_line, 514 const char *d_cptr); 515 ATTRIBUTE_NORETURN 516 extern void unknown_rhs(int i) GCC_NORETURN; 517 extern void unsupported_flag_warning(const char *flag, const char *details); 518 ATTRIBUTE_NORETURN 519 extern void unterminated_action(const struct ainfo *) GCC_NORETURN; 520 ATTRIBUTE_NORETURN 521 extern void unterminated_comment(const struct ainfo *) GCC_NORETURN; 522 ATTRIBUTE_NORETURN 523 extern void unterminated_string(const struct ainfo *) GCC_NORETURN; 524 ATTRIBUTE_NORETURN 525 extern void unterminated_text(const struct ainfo *) GCC_NORETURN; 526 ATTRIBUTE_NORETURN 527 extern void unterminated_union(const struct ainfo *) GCC_NORETURN; 528 extern void untyped_arg_warning(int a_lineno, const char *dlr_opt, const char *a_name); 529 ATTRIBUTE_NORETURN 530 extern void untyped_lhs(void) GCC_NORETURN; 531 ATTRIBUTE_NORETURN 532 extern void untyped_rhs(int i, char *s) GCC_NORETURN; 533 ATTRIBUTE_NORETURN 534 extern void used_reserved(char *s) GCC_NORETURN; 535 ATTRIBUTE_NORETURN 536 extern void unterminated_arglist(const struct ainfo *) GCC_NORETURN; 537 extern void wrong_number_args_warning(const char *which, const char *a_name); 538 extern void wrong_type_for_arg_warning(int i, char *a_name); 539 540 /* graph.c */ 541 extern void graph(void); 542 543 /* lalr.c */ 544 extern void lalr(void); 545 546 /* lr0.c */ 547 extern void lr0(void); 548 extern void show_cores(void); 549 extern void show_ritems(void); 550 extern void show_rrhs(void); 551 extern void show_shifts(void); 552 553 /* main.c */ 554 extern void *allocate(size_t n); 555 ATTRIBUTE_NORETURN 556 extern void done(int k) GCC_NORETURN; 557 558 /* mkpar.c */ 559 extern void free_parser(void); 560 extern void make_parser(void); 561 562 /* mstring.c */ 563 struct mstring 564 { 565 char *base, *ptr, *end; 566 }; 567 568 extern void msprintf(struct mstring *, const char *, ...) GCC_PRINTFLIKE(2,3); 569 extern int mputchar(struct mstring *, int); 570 extern struct mstring *msnew(void); 571 extern struct mstring *msrenew(char *); 572 extern char *msdone(struct mstring *); 573 extern int strnscmp(const char *, const char *); 574 extern unsigned int strnshash(const char *); 575 576 #define mputc(m, ch) (((m)->ptr == (m)->end) \ 577 ? mputchar(m,ch) \ 578 : (*(m)->ptr++ = (char) (ch))) 579 580 /* output.c */ 581 extern void output(void); 582 583 /* reader.c */ 584 extern void reader(void); 585 586 typedef enum 587 { 588 CODE_HEADER = 0 589 ,CODE_REQUIRES 590 ,CODE_PROVIDES 591 ,CODE_TOP 592 ,CODE_IMPORTS 593 ,CODE_MAX /* this must be last */ 594 } 595 CODE_CASES; 596 extern struct code_lines 597 { 598 const char *name; 599 char *lines; 600 size_t num; 601 } 602 code_lines[CODE_MAX]; 603 604 /* skeleton.c (generated by skel2c) */ 605 extern void write_section(FILE * fp, const char *const section[]); 606 607 /* symtab.c */ 608 extern bucket *make_bucket(const char *); 609 extern bucket *lookup(const char *); 610 extern void create_symbol_table(void); 611 extern void free_symbol_table(void); 612 extern void free_symbols(void); 613 614 /* verbose.c */ 615 extern void verbose(void); 616 617 /* warshall.c */ 618 extern void reflexive_transitive_closure(unsigned *R, int n); 619 620 #ifdef DEBUG 621 /* closure.c */ 622 extern void print_closure(int n); 623 extern void print_EFF(void); 624 extern void print_first_derives(void); 625 /* lr0.c */ 626 extern void print_derives(void); 627 #endif 628 629 #ifdef NO_LEAKS 630 extern void lr0_leaks(void); 631 extern void lalr_leaks(void); 632 extern void mkpar_leaks(void); 633 extern void output_leaks(void); 634 extern void mstring_leaks(void); 635 extern void reader_leaks(void); 636 #endif 637