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 calc3_parse 19 #endif /* yyparse */ 20 21 #ifndef yylex 22 #define yylex calc3_lex 23 #endif /* yylex */ 24 25 #ifndef yyerror 26 #define yyerror calc3_error 27 #endif /* yyerror */ 28 29 #ifndef yychar 30 #define yychar calc3_char 31 #endif /* yychar */ 32 33 #ifndef yyval 34 #define yyval calc3_val 35 #endif /* yyval */ 36 37 #ifndef yylval 38 #define yylval calc3_lval 39 #endif /* yylval */ 40 41 #ifndef yydebug 42 #define yydebug calc3_debug 43 #endif /* yydebug */ 44 45 #ifndef yynerrs 46 #define yynerrs calc3_nerrs 47 #endif /* yynerrs */ 48 49 #ifndef yyerrflag 50 #define yyerrflag calc3_errflag 51 #endif /* yyerrflag */ 52 53 #ifndef yylhs 54 #define yylhs calc3_lhs 55 #endif /* yylhs */ 56 57 #ifndef yylen 58 #define yylen calc3_len 59 #endif /* yylen */ 60 61 #ifndef yydefred 62 #define yydefred calc3_defred 63 #endif /* yydefred */ 64 65 #ifndef yydgoto 66 #define yydgoto calc3_dgoto 67 #endif /* yydgoto */ 68 69 #ifndef yysindex 70 #define yysindex calc3_sindex 71 #endif /* yysindex */ 72 73 #ifndef yyrindex 74 #define yyrindex calc3_rindex 75 #endif /* yyrindex */ 76 77 #ifndef yygindex 78 #define yygindex calc3_gindex 79 #endif /* yygindex */ 80 81 #ifndef yytable 82 #define yytable calc3_table 83 #endif /* yytable */ 84 85 #ifndef yycheck 86 #define yycheck calc3_check 87 #endif /* yycheck */ 88 89 #ifndef yyname 90 #define yyname calc3_name 91 #endif /* yyname */ 92 93 #ifndef yyrule 94 #define yyrule calc3_rule 95 #endif /* yyrule */ 96 #define YYPREFIX "calc3_" 97 98 #define YYPURE 1 99 100 #line 9 "calc3.y" 101 # include <stdio.h> 102 # include <ctype.h> 103 104 #ifdef YYBISON 105 #define YYSTYPE int 106 #define YYLEX_PARAM base 107 #define YYLEX_DECL() yylex(YYSTYPE *yylval, int *YYLEX_PARAM) 108 #define YYERROR_DECL() yyerror(int regs[26], int *base, const char *s) 109 int YYLEX_DECL(); 110 static void YYERROR_DECL(); 111 #endif 112 113 #line 114 "calc3.tab.c" 114 115 #if ! defined(YYSTYPE) && ! defined(YYSTYPE_IS_DECLARED) 116 /* Default: YYSTYPE is the semantic value type. */ 117 typedef int YYSTYPE; 118 # define YYSTYPE_IS_DECLARED 1 119 #endif 120 121 /* compatibility with bison */ 122 #ifdef YYPARSE_PARAM 123 /* compatibility with FreeBSD */ 124 # ifdef YYPARSE_PARAM_TYPE 125 # define YYPARSE_DECL() yyparse(YYPARSE_PARAM_TYPE YYPARSE_PARAM) 126 # else 127 # define YYPARSE_DECL() yyparse(void *YYPARSE_PARAM) 128 # endif 129 #else 130 # define YYPARSE_DECL() yyparse(int regs[26], int *base) 131 #endif 132 133 /* Parameters sent to lex. */ 134 #ifdef YYLEX_PARAM 135 # ifdef YYLEX_PARAM_TYPE 136 # define YYLEX_DECL() yylex(YYSTYPE *yylval, YYLEX_PARAM_TYPE YYLEX_PARAM) 137 # else 138 # define YYLEX_DECL() yylex(YYSTYPE *yylval, void * YYLEX_PARAM) 139 # endif 140 # define YYLEX yylex(&yylval, YYLEX_PARAM) 141 #else 142 # define YYLEX_DECL() yylex(YYSTYPE *yylval, int *base) 143 # define YYLEX yylex(&yylval, base) 144 #endif 145 146 /* Parameters sent to yyerror. */ 147 #ifndef YYERROR_DECL 148 #define YYERROR_DECL() yyerror(int regs[26], int *base, const char *s) 149 #endif 150 #ifndef YYERROR_CALL 151 #define YYERROR_CALL(msg) yyerror(regs, base, msg) 152 #endif 153 154 extern int YYPARSE_DECL(); 155 156 #define DIGIT 257 157 #define LETTER 258 158 #define UMINUS 259 159 #define YYERRCODE 256 160 typedef int YYINT; 161 static const YYINT calc3_lhs[] = { -1, 162 0, 0, 0, 1, 1, 2, 2, 2, 2, 2, 163 2, 2, 2, 2, 2, 2, 3, 3, 164 }; 165 static const YYINT calc3_len[] = { 2, 166 0, 3, 3, 1, 3, 3, 3, 3, 3, 3, 167 3, 3, 3, 2, 1, 1, 1, 2, 168 }; 169 static const YYINT calc3_defred[] = { 1, 170 0, 0, 17, 0, 0, 0, 0, 0, 0, 3, 171 0, 15, 14, 0, 2, 0, 0, 0, 0, 0, 172 0, 0, 18, 0, 6, 0, 0, 0, 0, 9, 173 10, 11, 174 }; 175 static const YYINT calc3_dgoto[] = { 1, 176 7, 8, 9, 177 }; 178 static const YYINT calc3_sindex[] = { 0, 179 -40, -7, 0, -55, -38, -38, 1, -29, -247, 0, 180 -38, 0, 0, 22, 0, -38, -38, -38, -38, -38, 181 -38, -38, 0, -29, 0, 51, 60, -20, -20, 0, 182 0, 0, 183 }; 184 static const YYINT calc3_rindex[] = { 0, 185 0, 0, 0, 2, 0, 0, 0, 9, -9, 0, 186 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 187 0, 0, 0, 10, 0, -6, 14, 5, 13, 0, 188 0, 0, 189 }; 190 static const YYINT calc3_gindex[] = { 0, 191 0, 65, 0, 192 }; 193 #define YYTABLESIZE 220 194 static const YYINT calc3_table[] = { 6, 195 16, 6, 10, 13, 5, 11, 5, 22, 17, 23, 196 15, 15, 20, 18, 7, 19, 22, 21, 4, 5, 197 0, 20, 8, 12, 0, 0, 21, 16, 16, 0, 198 0, 16, 16, 16, 13, 16, 0, 16, 15, 15, 199 0, 0, 7, 15, 15, 7, 15, 7, 15, 7, 200 8, 12, 0, 8, 12, 8, 0, 8, 22, 17, 201 0, 0, 25, 20, 18, 0, 19, 0, 21, 13, 202 14, 0, 0, 0, 0, 24, 0, 0, 0, 0, 203 26, 27, 28, 29, 30, 31, 32, 22, 17, 0, 204 0, 0, 20, 18, 16, 19, 22, 21, 0, 0, 205 0, 20, 18, 0, 19, 0, 21, 0, 0, 0, 206 0, 0, 0, 0, 16, 0, 0, 13, 0, 0, 207 0, 0, 0, 0, 0, 15, 0, 0, 7, 0, 208 0, 0, 0, 0, 0, 0, 8, 12, 0, 0, 209 0, 0, 0, 0, 0, 16, 0, 0, 0, 0, 210 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 211 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 212 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 213 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 214 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 215 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 216 0, 0, 0, 0, 0, 2, 3, 4, 3, 12, 217 }; 218 static const YYINT calc3_check[] = { 40, 219 10, 40, 10, 10, 45, 61, 45, 37, 38, 257, 220 10, 10, 42, 43, 10, 45, 37, 47, 10, 10, 221 -1, 42, 10, 10, -1, -1, 47, 37, 38, -1, 222 -1, 41, 42, 43, 41, 45, -1, 47, 37, 38, 223 -1, -1, 38, 42, 43, 41, 45, 43, 47, 45, 224 38, 38, -1, 41, 41, 43, -1, 45, 37, 38, 225 -1, -1, 41, 42, 43, -1, 45, -1, 47, 5, 226 6, -1, -1, -1, -1, 11, -1, -1, -1, -1, 227 16, 17, 18, 19, 20, 21, 22, 37, 38, -1, 228 -1, -1, 42, 43, 124, 45, 37, 47, -1, -1, 229 -1, 42, 43, -1, 45, -1, 47, -1, -1, -1, 230 -1, -1, -1, -1, 124, -1, -1, 124, -1, -1, 231 -1, -1, -1, -1, -1, 124, -1, -1, 124, -1, 232 -1, -1, -1, -1, -1, -1, 124, 124, -1, -1, 233 -1, -1, -1, -1, -1, 124, -1, -1, -1, -1, 234 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 235 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 236 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 237 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 238 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 239 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 240 -1, -1, -1, -1, -1, 256, 257, 258, 257, 258, 241 }; 242 #define YYFINAL 1 243 #ifndef YYDEBUG 244 #define YYDEBUG 0 245 #endif 246 #define YYMAXTOKEN 259 247 #define YYUNDFTOKEN 265 248 #define YYTRANSLATE(a) ((a) > YYMAXTOKEN ? YYUNDFTOKEN : (a)) 249 #if YYDEBUG 250 static const char *const calc3_name[] = { 251 252 "end-of-file",0,0,0,0,0,0,0,0,0,"'\\n'",0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 253 0,0,0,0,0,0,"'%'","'&'",0,"'('","')'","'*'","'+'",0,"'-'",0,"'/'",0,0,0,0,0,0,0, 254 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, 255 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, 256 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, 257 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, 258 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, 259 0,0,0,0,0,0,"DIGIT","LETTER","UMINUS",0,0,0,0,0,"illegal-symbol", 260 }; 261 static const char *const calc3_rule[] = { 262 "$accept : list", 263 "list :", 264 "list : list stat '\\n'", 265 "list : list error '\\n'", 266 "stat : expr", 267 "stat : LETTER '=' expr", 268 "expr : '(' expr ')'", 269 "expr : expr '+' expr", 270 "expr : expr '-' expr", 271 "expr : expr '*' expr", 272 "expr : expr '/' expr", 273 "expr : expr '%' expr", 274 "expr : expr '&' expr", 275 "expr : expr '|' expr", 276 "expr : '-' expr", 277 "expr : LETTER", 278 "expr : number", 279 "number : DIGIT", 280 "number : number DIGIT", 281 282 }; 283 #endif 284 285 #if YYDEBUG 286 int yydebug; 287 #endif 288 289 /* define the initial stack-sizes */ 290 #ifdef YYSTACKSIZE 291 #undef YYMAXDEPTH 292 #define YYMAXDEPTH YYSTACKSIZE 293 #else 294 #ifdef YYMAXDEPTH 295 #define YYSTACKSIZE YYMAXDEPTH 296 #else 297 #define YYSTACKSIZE 10000 298 #define YYMAXDEPTH 10000 299 #endif 300 #endif 301 302 #define YYINITSTACKSIZE 200 303 304 typedef struct { 305 unsigned stacksize; 306 YYINT *s_base; 307 YYINT *s_mark; 308 YYINT *s_last; 309 YYSTYPE *l_base; 310 YYSTYPE *l_mark; 311 } YYSTACKDATA; 312 #line 76 "calc3.y" 313 /* start of programs */ 314 315 #ifdef YYBYACC 316 extern int YYLEX_DECL(); 317 #endif 318 319 int 320 main (void) 321 { 322 int regs[26]; 323 int base = 10; 324 325 while(!feof(stdin)) { 326 yyparse(regs, &base); 327 } 328 return 0; 329 } 330 331 #define UNUSED(x) ((void)(x)) 332 333 static void 334 YYERROR_DECL() 335 { 336 UNUSED(regs); /* %parse-param regs is not actually used here */ 337 UNUSED(base); /* %parse-param base is not actually used here */ 338 fprintf(stderr, "%s\n", s); 339 } 340 341 int 342 YYLEX_DECL() 343 { 344 /* lexical analysis routine */ 345 /* returns LETTER for a lower case letter, yylval = 0 through 25 */ 346 /* return DIGIT for a digit, yylval = 0 through 9 */ 347 /* all other characters are returned immediately */ 348 349 int c; 350 351 while( (c=getchar()) == ' ' ) { /* skip blanks */ } 352 353 /* c is now nonblank */ 354 355 if( islower( c )) { 356 *yylval = (c - 'a'); 357 return ( LETTER ); 358 } 359 if( isdigit( c )) { 360 *yylval = (c - '0') % (*base); 361 return ( DIGIT ); 362 } 363 return( c ); 364 } 365 #line 366 "calc3.tab.c" 366 367 #if YYDEBUG 368 #include <stdio.h> /* needed for printf */ 369 #endif 370 371 #include <stdlib.h> /* needed for malloc, etc */ 372 #include <string.h> /* needed for memset */ 373 374 /* allocate initial stack or double stack size, up to YYMAXDEPTH */ 375 static int yygrowstack(YYSTACKDATA *data) 376 { 377 int i; 378 unsigned newsize; 379 YYINT *newss; 380 YYSTYPE *newvs; 381 382 if ((newsize = data->stacksize) == 0) 383 newsize = YYINITSTACKSIZE; 384 else if (newsize >= YYMAXDEPTH) 385 return YYENOMEM; 386 else if ((newsize *= 2) > YYMAXDEPTH) 387 newsize = YYMAXDEPTH; 388 389 i = (int) (data->s_mark - data->s_base); 390 newss = (YYINT *)realloc(data->s_base, newsize * sizeof(*newss)); 391 if (newss == NULL) 392 return YYENOMEM; 393 394 data->s_base = newss; 395 data->s_mark = newss + i; 396 397 newvs = (YYSTYPE *)realloc(data->l_base, newsize * sizeof(*newvs)); 398 if (newvs == NULL) 399 return YYENOMEM; 400 401 data->l_base = newvs; 402 data->l_mark = newvs + i; 403 404 data->stacksize = newsize; 405 data->s_last = data->s_base + newsize - 1; 406 return 0; 407 } 408 409 #if YYPURE || defined(YY_NO_LEAKS) 410 static void yyfreestack(YYSTACKDATA *data) 411 { 412 free(data->s_base); 413 free(data->l_base); 414 memset(data, 0, sizeof(*data)); 415 } 416 #else 417 #define yyfreestack(data) /* nothing */ 418 #endif 419 420 #define YYABORT goto yyabort 421 #define YYREJECT goto yyabort 422 #define YYACCEPT goto yyaccept 423 #define YYERROR goto yyerrlab 424 425 int 426 YYPARSE_DECL() 427 { 428 int yyerrflag; 429 int yychar; 430 YYSTYPE yyval; 431 YYSTYPE yylval; 432 int yynerrs; 433 434 /* variables for the parser stack */ 435 YYSTACKDATA yystack; 436 int yym, yyn, yystate; 437 #if YYDEBUG 438 const char *yys; 439 440 if ((yys = getenv("YYDEBUG")) != NULL) 441 { 442 yyn = *yys; 443 if (yyn >= '0' && yyn <= '9') 444 yydebug = yyn - '0'; 445 } 446 #endif 447 448 memset(&yyval, 0, sizeof(yyval)); 449 memset(&yylval, 0, sizeof(yylval)); 450 451 yym = 0; 452 yyn = 0; 453 yynerrs = 0; 454 yyerrflag = 0; 455 yychar = YYEMPTY; 456 yystate = 0; 457 458 #if YYPURE 459 memset(&yystack, 0, sizeof(yystack)); 460 #endif 461 462 if (yystack.s_base == NULL && yygrowstack(&yystack) == YYENOMEM) goto yyoverflow; 463 yystack.s_mark = yystack.s_base; 464 yystack.l_mark = yystack.l_base; 465 yystate = 0; 466 *yystack.s_mark = 0; 467 468 yyloop: 469 if ((yyn = yydefred[yystate]) != 0) goto yyreduce; 470 if (yychar < 0) 471 { 472 yychar = YYLEX; 473 if (yychar < 0) yychar = YYEOF; 474 #if YYDEBUG 475 if (yydebug) 476 { 477 if ((yys = yyname[YYTRANSLATE(yychar)]) == NULL) yys = yyname[YYUNDFTOKEN]; 478 printf("%sdebug: state %d, reading %d (%s)\n", 479 YYPREFIX, yystate, yychar, yys); 480 } 481 #endif 482 } 483 if (((yyn = yysindex[yystate]) != 0) && (yyn += yychar) >= 0 && 484 yyn <= YYTABLESIZE && yycheck[yyn] == (YYINT) yychar) 485 { 486 #if YYDEBUG 487 if (yydebug) 488 printf("%sdebug: state %d, shifting to state %d\n", 489 YYPREFIX, yystate, yytable[yyn]); 490 #endif 491 if (yystack.s_mark >= yystack.s_last && yygrowstack(&yystack) == YYENOMEM) goto yyoverflow; 492 yystate = yytable[yyn]; 493 *++yystack.s_mark = yytable[yyn]; 494 *++yystack.l_mark = yylval; 495 yychar = YYEMPTY; 496 if (yyerrflag > 0) --yyerrflag; 497 goto yyloop; 498 } 499 if (((yyn = yyrindex[yystate]) != 0) && (yyn += yychar) >= 0 && 500 yyn <= YYTABLESIZE && yycheck[yyn] == (YYINT) yychar) 501 { 502 yyn = yytable[yyn]; 503 goto yyreduce; 504 } 505 if (yyerrflag != 0) goto yyinrecovery; 506 507 YYERROR_CALL("syntax error"); 508 509 goto yyerrlab; /* redundant goto avoids 'unused label' warning */ 510 yyerrlab: 511 ++yynerrs; 512 513 yyinrecovery: 514 if (yyerrflag < 3) 515 { 516 yyerrflag = 3; 517 for (;;) 518 { 519 if (((yyn = yysindex[*yystack.s_mark]) != 0) && (yyn += YYERRCODE) >= 0 && 520 yyn <= YYTABLESIZE && yycheck[yyn] == (YYINT) YYERRCODE) 521 { 522 #if YYDEBUG 523 if (yydebug) 524 printf("%sdebug: state %d, error recovery shifting\ 525 to state %d\n", YYPREFIX, *yystack.s_mark, yytable[yyn]); 526 #endif 527 if (yystack.s_mark >= yystack.s_last && yygrowstack(&yystack) == YYENOMEM) goto yyoverflow; 528 yystate = yytable[yyn]; 529 *++yystack.s_mark = yytable[yyn]; 530 *++yystack.l_mark = yylval; 531 goto yyloop; 532 } 533 else 534 { 535 #if YYDEBUG 536 if (yydebug) 537 printf("%sdebug: error recovery discarding state %d\n", 538 YYPREFIX, *yystack.s_mark); 539 #endif 540 if (yystack.s_mark <= yystack.s_base) goto yyabort; 541 --yystack.s_mark; 542 --yystack.l_mark; 543 } 544 } 545 } 546 else 547 { 548 if (yychar == YYEOF) goto yyabort; 549 #if YYDEBUG 550 if (yydebug) 551 { 552 if ((yys = yyname[YYTRANSLATE(yychar)]) == NULL) yys = yyname[YYUNDFTOKEN]; 553 printf("%sdebug: state %d, error recovery discards token %d (%s)\n", 554 YYPREFIX, yystate, yychar, yys); 555 } 556 #endif 557 yychar = YYEMPTY; 558 goto yyloop; 559 } 560 561 yyreduce: 562 #if YYDEBUG 563 if (yydebug) 564 printf("%sdebug: state %d, reducing by rule %d (%s)\n", 565 YYPREFIX, yystate, yyn, yyrule[yyn]); 566 #endif 567 yym = yylen[yyn]; 568 if (yym > 0) 569 yyval = yystack.l_mark[1-yym]; 570 else 571 memset(&yyval, 0, sizeof yyval); 572 573 switch (yyn) 574 { 575 case 3: 576 #line 38 "calc3.y" 577 { yyerrok ; } 578 break; 579 case 4: 580 #line 42 "calc3.y" 581 { printf("%d\n",yystack.l_mark[0]);} 582 break; 583 case 5: 584 #line 44 "calc3.y" 585 { regs[yystack.l_mark[-2]] = yystack.l_mark[0]; } 586 break; 587 case 6: 588 #line 48 "calc3.y" 589 { yyval = yystack.l_mark[-1]; } 590 break; 591 case 7: 592 #line 50 "calc3.y" 593 { yyval = yystack.l_mark[-2] + yystack.l_mark[0]; } 594 break; 595 case 8: 596 #line 52 "calc3.y" 597 { yyval = yystack.l_mark[-2] - yystack.l_mark[0]; } 598 break; 599 case 9: 600 #line 54 "calc3.y" 601 { yyval = yystack.l_mark[-2] * yystack.l_mark[0]; } 602 break; 603 case 10: 604 #line 56 "calc3.y" 605 { yyval = yystack.l_mark[-2] / yystack.l_mark[0]; } 606 break; 607 case 11: 608 #line 58 "calc3.y" 609 { yyval = yystack.l_mark[-2] % yystack.l_mark[0]; } 610 break; 611 case 12: 612 #line 60 "calc3.y" 613 { yyval = yystack.l_mark[-2] & yystack.l_mark[0]; } 614 break; 615 case 13: 616 #line 62 "calc3.y" 617 { yyval = yystack.l_mark[-2] | yystack.l_mark[0]; } 618 break; 619 case 14: 620 #line 64 "calc3.y" 621 { yyval = - yystack.l_mark[0]; } 622 break; 623 case 15: 624 #line 66 "calc3.y" 625 { yyval = regs[yystack.l_mark[0]]; } 626 break; 627 case 17: 628 #line 71 "calc3.y" 629 { yyval = yystack.l_mark[0]; (*base) = (yystack.l_mark[0]==0) ? 8 : 10; } 630 break; 631 case 18: 632 #line 73 "calc3.y" 633 { yyval = (*base) * yystack.l_mark[-1] + yystack.l_mark[0]; } 634 break; 635 #line 636 "calc3.tab.c" 636 } 637 yystack.s_mark -= yym; 638 yystate = *yystack.s_mark; 639 yystack.l_mark -= yym; 640 yym = yylhs[yyn]; 641 if (yystate == 0 && yym == 0) 642 { 643 #if YYDEBUG 644 if (yydebug) 645 printf("%sdebug: after reduction, shifting from state 0 to\ 646 state %d\n", YYPREFIX, YYFINAL); 647 #endif 648 yystate = YYFINAL; 649 *++yystack.s_mark = YYFINAL; 650 *++yystack.l_mark = yyval; 651 if (yychar < 0) 652 { 653 yychar = YYLEX; 654 if (yychar < 0) yychar = YYEOF; 655 #if YYDEBUG 656 if (yydebug) 657 { 658 if ((yys = yyname[YYTRANSLATE(yychar)]) == NULL) yys = yyname[YYUNDFTOKEN]; 659 printf("%sdebug: state %d, reading %d (%s)\n", 660 YYPREFIX, YYFINAL, yychar, yys); 661 } 662 #endif 663 } 664 if (yychar == YYEOF) goto yyaccept; 665 goto yyloop; 666 } 667 if (((yyn = yygindex[yym]) != 0) && (yyn += yystate) >= 0 && 668 yyn <= YYTABLESIZE && yycheck[yyn] == (YYINT) yystate) 669 yystate = yytable[yyn]; 670 else 671 yystate = yydgoto[yym]; 672 #if YYDEBUG 673 if (yydebug) 674 printf("%sdebug: after reduction, shifting from state %d \ 675 to state %d\n", YYPREFIX, *yystack.s_mark, yystate); 676 #endif 677 if (yystack.s_mark >= yystack.s_last && yygrowstack(&yystack) == YYENOMEM) goto yyoverflow; 678 *++yystack.s_mark = (YYINT) yystate; 679 *++yystack.l_mark = yyval; 680 goto yyloop; 681 682 yyoverflow: 683 YYERROR_CALL("yacc stack overflow"); 684 685 yyabort: 686 yyfreestack(&yystack); 687 return (1); 688 689 yyaccept: 690 yyfreestack(&yystack); 691 return (0); 692 } 693