1 /* original parser id follows */ 2 /* yysccsid[] = "@(#)yaccpar 1.9 (Berkeley) 02/21/93" */ 3 /* (use YYMAJOR/YYMINOR for ifdefs dependent on parser version) */ 4 5 #define YYBYACC 1 6 #define YYMAJOR 1 7 #define YYMINOR 9 8 #define YYCHECK "yyyymmdd" 9 10 #define YYEMPTY (-1) 11 #define yyclearin (yychar = YYEMPTY) 12 #define yyerrok (yyerrflag = 0) 13 #define YYRECOVERING() (yyerrflag != 0) 14 #define YYENOMEM (-2) 15 #define YYEOF 0 16 17 #ifndef yyparse 18 #define yyparse empty_parse 19 #endif /* yyparse */ 20 21 #ifndef yylex 22 #define yylex empty_lex 23 #endif /* yylex */ 24 25 #ifndef yyerror 26 #define yyerror empty_error 27 #endif /* yyerror */ 28 29 #ifndef yychar 30 #define yychar empty_char 31 #endif /* yychar */ 32 33 #ifndef yyval 34 #define yyval empty_val 35 #endif /* yyval */ 36 37 #ifndef yylval 38 #define yylval empty_lval 39 #endif /* yylval */ 40 41 #ifndef yydebug 42 #define yydebug empty_debug 43 #endif /* yydebug */ 44 45 #ifndef yynerrs 46 #define yynerrs empty_nerrs 47 #endif /* yynerrs */ 48 49 #ifndef yyerrflag 50 #define yyerrflag empty_errflag 51 #endif /* yyerrflag */ 52 53 #ifndef yylhs 54 #define yylhs empty_lhs 55 #endif /* yylhs */ 56 57 #ifndef yylen 58 #define yylen empty_len 59 #endif /* yylen */ 60 61 #ifndef yydefred 62 #define yydefred empty_defred 63 #endif /* yydefred */ 64 65 #ifndef yydgoto 66 #define yydgoto empty_dgoto 67 #endif /* yydgoto */ 68 69 #ifndef yysindex 70 #define yysindex empty_sindex 71 #endif /* yysindex */ 72 73 #ifndef yyrindex 74 #define yyrindex empty_rindex 75 #endif /* yyrindex */ 76 77 #ifndef yygindex 78 #define yygindex empty_gindex 79 #endif /* yygindex */ 80 81 #ifndef yytable 82 #define yytable empty_table 83 #endif /* yytable */ 84 85 #ifndef yycheck 86 #define yycheck empty_check 87 #endif /* yycheck */ 88 89 #ifndef yyname 90 #define yyname empty_name 91 #endif /* yyname */ 92 93 #ifndef yyrule 94 #define yyrule empty_rule 95 #endif /* yyrule */ 96 #define YYPREFIX "empty_" 97 98 #define YYPURE 0 99 100 #line 2 "empty.y" 101 #ifdef YYBISON 102 #define YYLEX_DECL() yylex(void) 103 #define YYERROR_DECL() yyerror(const char *s) 104 static int YYLEX_DECL(); 105 static void YYERROR_DECL(); 106 #endif 107 #line 108 "empty.tab.c" 108 109 #if ! defined(YYSTYPE) && ! defined(YYSTYPE_IS_DECLARED) 110 /* Default: YYSTYPE is the semantic value type. */ 111 typedef int YYSTYPE; 112 # define YYSTYPE_IS_DECLARED 1 113 #endif 114 115 /* compatibility with bison */ 116 #ifdef YYPARSE_PARAM 117 /* compatibility with FreeBSD */ 118 # ifdef YYPARSE_PARAM_TYPE 119 # define YYPARSE_DECL() yyparse(YYPARSE_PARAM_TYPE YYPARSE_PARAM) 120 # else 121 # define YYPARSE_DECL() yyparse(void *YYPARSE_PARAM) 122 # endif 123 #else 124 # define YYPARSE_DECL() yyparse(void) 125 #endif 126 127 /* Parameters sent to lex. */ 128 #ifdef YYLEX_PARAM 129 # define YYLEX_DECL() yylex(void *YYLEX_PARAM) 130 # define YYLEX yylex(YYLEX_PARAM) 131 #else 132 # define YYLEX_DECL() yylex(void) 133 # define YYLEX yylex() 134 #endif 135 136 /* Parameters sent to yyerror. */ 137 #ifndef YYERROR_DECL 138 #define YYERROR_DECL() yyerror(const char *s) 139 #endif 140 #ifndef YYERROR_CALL 141 #define YYERROR_CALL(msg) yyerror(msg) 142 #endif 143 144 extern int YYPARSE_DECL(); 145 146 #define YYERRCODE 256 147 typedef int YYINT; 148 static const YYINT empty_lhs[] = { -1, 149 0, 150 }; 151 static const YYINT empty_len[] = { 2, 152 0, 153 }; 154 static const YYINT empty_defred[] = { 1, 155 0, 156 }; 157 static const YYINT empty_dgoto[] = { 1, 158 }; 159 static const YYINT empty_sindex[] = { 0, 160 0, 161 }; 162 static const YYINT empty_rindex[] = { 0, 163 0, 164 }; 165 static const YYINT empty_gindex[] = { 0, 166 }; 167 #define YYTABLESIZE 0 168 static const YYINT empty_table[] = { 0, 169 }; 170 static const YYINT empty_check[] = { -1, 171 }; 172 #define YYFINAL 1 173 #ifndef YYDEBUG 174 #define YYDEBUG 0 175 #endif 176 #define YYMAXTOKEN 256 177 #define YYUNDFTOKEN 259 178 #define YYTRANSLATE(a) ((a) > YYMAXTOKEN ? YYUNDFTOKEN : (a)) 179 #if YYDEBUG 180 static const char *const empty_name[] = { 181 182 "end-of-file",0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 183 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 184 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 185 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 186 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 187 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 188 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,"illegal-symbol", 189 }; 190 static const char *const empty_rule[] = { 191 "$accept : start", 192 "start :", 193 194 }; 195 #endif 196 197 int yydebug; 198 int yynerrs; 199 200 int yyerrflag; 201 int yychar; 202 YYSTYPE yyval; 203 YYSTYPE yylval; 204 205 /* define the initial stack-sizes */ 206 #ifdef YYSTACKSIZE 207 #undef YYMAXDEPTH 208 #define YYMAXDEPTH YYSTACKSIZE 209 #else 210 #ifdef YYMAXDEPTH 211 #define YYSTACKSIZE YYMAXDEPTH 212 #else 213 #define YYSTACKSIZE 10000 214 #define YYMAXDEPTH 10000 215 #endif 216 #endif 217 218 #define YYINITSTACKSIZE 200 219 220 typedef struct { 221 unsigned stacksize; 222 YYINT *s_base; 223 YYINT *s_mark; 224 YYINT *s_last; 225 YYSTYPE *l_base; 226 YYSTYPE *l_mark; 227 } YYSTACKDATA; 228 /* variables for the parser stack */ 229 static YYSTACKDATA yystack; 230 #line 13 "empty.y" 231 232 #include <stdio.h> 233 234 static int 235 YYLEX_DECL() { 236 return -1; 237 } 238 239 static void 240 YYERROR_DECL() { 241 printf("%s\n",s); 242 } 243 #line 244 "empty.tab.c" 244 245 #if YYDEBUG 246 #include <stdio.h> /* needed for printf */ 247 #endif 248 249 #include <stdlib.h> /* needed for malloc, etc */ 250 #include <string.h> /* needed for memset */ 251 252 /* allocate initial stack or double stack size, up to YYMAXDEPTH */ 253 static int yygrowstack(YYSTACKDATA *data) 254 { 255 int i; 256 unsigned newsize; 257 YYINT *newss; 258 YYSTYPE *newvs; 259 260 if ((newsize = data->stacksize) == 0) 261 newsize = YYINITSTACKSIZE; 262 else if (newsize >= YYMAXDEPTH) 263 return YYENOMEM; 264 else if ((newsize *= 2) > YYMAXDEPTH) 265 newsize = YYMAXDEPTH; 266 267 i = (int) (data->s_mark - data->s_base); 268 newss = (YYINT *)realloc(data->s_base, newsize * sizeof(*newss)); 269 if (newss == 0) 270 return YYENOMEM; 271 272 data->s_base = newss; 273 data->s_mark = newss + i; 274 275 newvs = (YYSTYPE *)realloc(data->l_base, newsize * sizeof(*newvs)); 276 if (newvs == 0) 277 return YYENOMEM; 278 279 data->l_base = newvs; 280 data->l_mark = newvs + i; 281 282 data->stacksize = newsize; 283 data->s_last = data->s_base + newsize - 1; 284 return 0; 285 } 286 287 #if YYPURE || defined(YY_NO_LEAKS) 288 static void yyfreestack(YYSTACKDATA *data) 289 { 290 free(data->s_base); 291 free(data->l_base); 292 memset(data, 0, sizeof(*data)); 293 } 294 #else 295 #define yyfreestack(data) /* nothing */ 296 #endif 297 298 #define YYABORT goto yyabort 299 #define YYREJECT goto yyabort 300 #define YYACCEPT goto yyaccept 301 #define YYERROR goto yyerrlab 302 303 int 304 YYPARSE_DECL() 305 { 306 int yym, yyn, yystate; 307 #if YYDEBUG 308 const char *yys; 309 310 if ((yys = getenv("YYDEBUG")) != 0) 311 { 312 yyn = *yys; 313 if (yyn >= '0' && yyn <= '9') 314 yydebug = yyn - '0'; 315 } 316 #endif 317 318 yynerrs = 0; 319 yyerrflag = 0; 320 yychar = YYEMPTY; 321 yystate = 0; 322 323 #if YYPURE 324 memset(&yystack, 0, sizeof(yystack)); 325 #endif 326 327 if (yystack.s_base == NULL && yygrowstack(&yystack) == YYENOMEM) goto yyoverflow; 328 yystack.s_mark = yystack.s_base; 329 yystack.l_mark = yystack.l_base; 330 yystate = 0; 331 *yystack.s_mark = 0; 332 333 yyloop: 334 if ((yyn = yydefred[yystate]) != 0) goto yyreduce; 335 if (yychar < 0) 336 { 337 if ((yychar = YYLEX) < 0) yychar = YYEOF; 338 #if YYDEBUG 339 if (yydebug) 340 { 341 yys = yyname[YYTRANSLATE(yychar)]; 342 printf("%sdebug: state %d, reading %d (%s)\n", 343 YYPREFIX, yystate, yychar, yys); 344 } 345 #endif 346 } 347 if ((yyn = yysindex[yystate]) && (yyn += yychar) >= 0 && 348 yyn <= YYTABLESIZE && yycheck[yyn] == yychar) 349 { 350 #if YYDEBUG 351 if (yydebug) 352 printf("%sdebug: state %d, shifting to state %d\n", 353 YYPREFIX, yystate, yytable[yyn]); 354 #endif 355 if (yystack.s_mark >= yystack.s_last && yygrowstack(&yystack) == YYENOMEM) 356 { 357 goto yyoverflow; 358 } 359 yystate = yytable[yyn]; 360 *++yystack.s_mark = yytable[yyn]; 361 *++yystack.l_mark = yylval; 362 yychar = YYEMPTY; 363 if (yyerrflag > 0) --yyerrflag; 364 goto yyloop; 365 } 366 if ((yyn = yyrindex[yystate]) && (yyn += yychar) >= 0 && 367 yyn <= YYTABLESIZE && yycheck[yyn] == yychar) 368 { 369 yyn = yytable[yyn]; 370 goto yyreduce; 371 } 372 if (yyerrflag) goto yyinrecovery; 373 374 YYERROR_CALL("syntax error"); 375 376 goto yyerrlab; 377 378 yyerrlab: 379 ++yynerrs; 380 381 yyinrecovery: 382 if (yyerrflag < 3) 383 { 384 yyerrflag = 3; 385 for (;;) 386 { 387 if ((yyn = yysindex[*yystack.s_mark]) && (yyn += YYERRCODE) >= 0 && 388 yyn <= YYTABLESIZE && yycheck[yyn] == YYERRCODE) 389 { 390 #if YYDEBUG 391 if (yydebug) 392 printf("%sdebug: state %d, error recovery shifting\ 393 to state %d\n", YYPREFIX, *yystack.s_mark, yytable[yyn]); 394 #endif 395 if (yystack.s_mark >= yystack.s_last && yygrowstack(&yystack) == YYENOMEM) 396 { 397 goto yyoverflow; 398 } 399 yystate = yytable[yyn]; 400 *++yystack.s_mark = yytable[yyn]; 401 *++yystack.l_mark = yylval; 402 goto yyloop; 403 } 404 else 405 { 406 #if YYDEBUG 407 if (yydebug) 408 printf("%sdebug: error recovery discarding state %d\n", 409 YYPREFIX, *yystack.s_mark); 410 #endif 411 if (yystack.s_mark <= yystack.s_base) goto yyabort; 412 --yystack.s_mark; 413 --yystack.l_mark; 414 } 415 } 416 } 417 else 418 { 419 if (yychar == YYEOF) goto yyabort; 420 #if YYDEBUG 421 if (yydebug) 422 { 423 yys = yyname[YYTRANSLATE(yychar)]; 424 printf("%sdebug: state %d, error recovery discards token %d (%s)\n", 425 YYPREFIX, yystate, yychar, yys); 426 } 427 #endif 428 yychar = YYEMPTY; 429 goto yyloop; 430 } 431 432 yyreduce: 433 #if YYDEBUG 434 if (yydebug) 435 printf("%sdebug: state %d, reducing by rule %d (%s)\n", 436 YYPREFIX, yystate, yyn, yyrule[yyn]); 437 #endif 438 yym = yylen[yyn]; 439 if (yym) 440 yyval = yystack.l_mark[1-yym]; 441 else 442 memset(&yyval, 0, sizeof yyval); 443 switch (yyn) 444 { 445 } 446 yystack.s_mark -= yym; 447 yystate = *yystack.s_mark; 448 yystack.l_mark -= yym; 449 yym = yylhs[yyn]; 450 if (yystate == 0 && yym == 0) 451 { 452 #if YYDEBUG 453 if (yydebug) 454 printf("%sdebug: after reduction, shifting from state 0 to\ 455 state %d\n", YYPREFIX, YYFINAL); 456 #endif 457 yystate = YYFINAL; 458 *++yystack.s_mark = YYFINAL; 459 *++yystack.l_mark = yyval; 460 if (yychar < 0) 461 { 462 if ((yychar = YYLEX) < 0) yychar = YYEOF; 463 #if YYDEBUG 464 if (yydebug) 465 { 466 yys = yyname[YYTRANSLATE(yychar)]; 467 printf("%sdebug: state %d, reading %d (%s)\n", 468 YYPREFIX, YYFINAL, yychar, yys); 469 } 470 #endif 471 } 472 if (yychar == YYEOF) goto yyaccept; 473 goto yyloop; 474 } 475 if ((yyn = yygindex[yym]) && (yyn += yystate) >= 0 && 476 yyn <= YYTABLESIZE && yycheck[yyn] == yystate) 477 yystate = yytable[yyn]; 478 else 479 yystate = yydgoto[yym]; 480 #if YYDEBUG 481 if (yydebug) 482 printf("%sdebug: after reduction, shifting from state %d \ 483 to state %d\n", YYPREFIX, *yystack.s_mark, yystate); 484 #endif 485 if (yystack.s_mark >= yystack.s_last && yygrowstack(&yystack) == YYENOMEM) 486 { 487 goto yyoverflow; 488 } 489 *++yystack.s_mark = (YYINT) yystate; 490 *++yystack.l_mark = yyval; 491 goto yyloop; 492 493 yyoverflow: 494 YYERROR_CALL("yacc stack overflow"); 495 496 yyabort: 497 yyfreestack(&yystack); 498 return (1); 499 500 yyaccept: 501 yyfreestack(&yystack); 502 return (0); 503 } 504