1 #line 2 "arith_lex.c" 2 3 #line 4 "arith_lex.c" 4 5 #define YY_INT_ALIGNED short int 6 7 /* A lexical scanner generated by flex */ 8 9 #define FLEX_SCANNER 10 #define YY_FLEX_MAJOR_VERSION 2 11 #define YY_FLEX_MINOR_VERSION 5 12 #define YY_FLEX_SUBMINOR_VERSION 31 13 #if YY_FLEX_SUBMINOR_VERSION > 0 14 #define FLEX_BETA 15 #endif 16 17 /* First, we deal with platform-specific or compiler-specific issues. */ 18 19 /* begin standard C headers. */ 20 #include <stdio.h> 21 #include <string.h> 22 #include <errno.h> 23 #include <stdlib.h> 24 25 /* end standard C headers. */ 26 27 /* flex integer type definitions */ 28 29 #ifndef FLEXINT_H 30 #define FLEXINT_H 31 32 /* C99 systems have <inttypes.h>. Non-C99 systems may or may not. */ 33 34 #if defined __STDC_VERSION__ && __STDC_VERSION__ >= 199901L 35 #include <inttypes.h> 36 typedef int8_t flex_int8_t; 37 typedef uint8_t flex_uint8_t; 38 typedef int16_t flex_int16_t; 39 typedef uint16_t flex_uint16_t; 40 typedef int32_t flex_int32_t; 41 typedef uint32_t flex_uint32_t; 42 #else 43 typedef signed char flex_int8_t; 44 typedef short int flex_int16_t; 45 typedef int flex_int32_t; 46 typedef unsigned char flex_uint8_t; 47 typedef unsigned short int flex_uint16_t; 48 typedef unsigned int flex_uint32_t; 49 #endif /* ! C99 */ 50 51 /* Limits of integral types. */ 52 #ifndef INT8_MIN 53 #define INT8_MIN (-128) 54 #endif 55 #ifndef INT16_MIN 56 #define INT16_MIN (-32767-1) 57 #endif 58 #ifndef INT32_MIN 59 #define INT32_MIN (-2147483647-1) 60 #endif 61 #ifndef INT8_MAX 62 #define INT8_MAX (127) 63 #endif 64 #ifndef INT16_MAX 65 #define INT16_MAX (32767) 66 #endif 67 #ifndef INT32_MAX 68 #define INT32_MAX (2147483647) 69 #endif 70 #ifndef UINT8_MAX 71 #define UINT8_MAX (255U) 72 #endif 73 #ifndef UINT16_MAX 74 #define UINT16_MAX (65535U) 75 #endif 76 #ifndef UINT32_MAX 77 #define UINT32_MAX (4294967295U) 78 #endif 79 80 #endif /* ! FLEXINT_H */ 81 82 #ifdef __cplusplus 83 84 /* The "const" storage-class-modifier is valid. */ 85 #define YY_USE_CONST 86 87 #else /* ! __cplusplus */ 88 89 #if __STDC__ 90 91 #define YY_USE_CONST 92 93 #endif /* __STDC__ */ 94 #endif /* ! __cplusplus */ 95 96 #ifdef YY_USE_CONST 97 #define yyconst const 98 #else 99 #define yyconst 100 #endif 101 102 /* Returned upon end-of-file. */ 103 #define YY_NULL 0 104 105 /* Promotes a possibly negative, possibly signed char to an unsigned 106 * integer for use as an array index. If the signed char is negative, 107 * we want to instead treat it as an 8-bit unsigned char, hence the 108 * double cast. 109 */ 110 #define YY_SC_TO_UI(c) ((unsigned int) (unsigned char) c) 111 112 /* Enter a start condition. This macro really ought to take a parameter, 113 * but we do it the disgusting crufty way forced on us by the ()-less 114 * definition of BEGIN. 115 */ 116 #define BEGIN (yy_start) = 1 + 2 * 117 118 /* Translate the current start state into a value that can be later handed 119 * to BEGIN to return to the state. The YYSTATE alias is for lex 120 * compatibility. 121 */ 122 #define YY_START (((yy_start) - 1) / 2) 123 #define YYSTATE YY_START 124 125 /* Action number for EOF rule of a given start state. */ 126 #define YY_STATE_EOF(state) (YY_END_OF_BUFFER + state + 1) 127 128 /* Special action meaning "start processing a new file". */ 129 #define YY_NEW_FILE yyrestart(yyin ) 130 131 #define YY_END_OF_BUFFER_CHAR 0 132 133 /* Size of default input buffer. */ 134 #ifndef YY_BUF_SIZE 135 #define YY_BUF_SIZE 16384 136 #endif 137 138 #ifndef YY_TYPEDEF_YY_BUFFER_STATE 139 #define YY_TYPEDEF_YY_BUFFER_STATE 140 typedef struct yy_buffer_state *YY_BUFFER_STATE; 141 #endif 142 143 extern int yyleng; 144 145 extern FILE *yyin, *yyout; 146 147 #define EOB_ACT_CONTINUE_SCAN 0 148 #define EOB_ACT_END_OF_FILE 1 149 #define EOB_ACT_LAST_MATCH 2 150 151 #define YY_LESS_LINENO(n) 152 153 /* Return all but the first "n" matched characters back to the input stream. */ 154 #define yyless(n) \ 155 do \ 156 { \ 157 /* Undo effects of setting up yytext. */ \ 158 int yyless_macro_arg = (n); \ 159 YY_LESS_LINENO(yyless_macro_arg);\ 160 *yy_cp = (yy_hold_char); \ 161 YY_RESTORE_YY_MORE_OFFSET \ 162 (yy_c_buf_p) = yy_cp = yy_bp + yyless_macro_arg - YY_MORE_ADJ; \ 163 YY_DO_BEFORE_ACTION; /* set up yytext again */ \ 164 } \ 165 while ( 0 ) 166 167 #define unput(c) yyunput( c, (yytext_ptr) ) 168 169 /* The following is because we cannot portably get our hands on size_t 170 * (without autoconf's help, which isn't available because we want 171 * flex-generated scanners to compile on their own). 172 */ 173 174 #ifndef YY_TYPEDEF_YY_SIZE_T 175 #define YY_TYPEDEF_YY_SIZE_T 176 typedef unsigned int yy_size_t; 177 #endif 178 179 #ifndef YY_STRUCT_YY_BUFFER_STATE 180 #define YY_STRUCT_YY_BUFFER_STATE 181 struct yy_buffer_state 182 { 183 FILE *yy_input_file; 184 185 char *yy_ch_buf; /* input buffer */ 186 char *yy_buf_pos; /* current position in input buffer */ 187 188 /* Size of input buffer in bytes, not including room for EOB 189 * characters. 190 */ 191 yy_size_t yy_buf_size; 192 193 /* Number of characters read into yy_ch_buf, not including EOB 194 * characters. 195 */ 196 int yy_n_chars; 197 198 /* Whether we "own" the buffer - i.e., we know we created it, 199 * and can realloc() it to grow it, and should free() it to 200 * delete it. 201 */ 202 int yy_is_our_buffer; 203 204 /* Whether this is an "interactive" input source; if so, and 205 * if we're using stdio for input, then we want to use getc() 206 * instead of fread(), to make sure we stop fetching input after 207 * each newline. 208 */ 209 int yy_is_interactive; 210 211 /* Whether we're considered to be at the beginning of a line. 212 * If so, '^' rules will be active on the next match, otherwise 213 * not. 214 */ 215 int yy_at_bol; 216 217 int yy_bs_lineno; /**< The line count. */ 218 int yy_bs_column; /**< The column count. */ 219 220 /* Whether to try to fill the input buffer when we reach the 221 * end of it. 222 */ 223 int yy_fill_buffer; 224 225 int yy_buffer_status; 226 227 #define YY_BUFFER_NEW 0 228 #define YY_BUFFER_NORMAL 1 229 /* When an EOF's been seen but there's still some text to process 230 * then we mark the buffer as YY_EOF_PENDING, to indicate that we 231 * shouldn't try reading from the input source any more. We might 232 * still have a bunch of tokens to match, though, because of 233 * possible backing-up. 234 * 235 * When we actually see the EOF, we change the status to "new" 236 * (via yyrestart()), so that the user can continue scanning by 237 * just pointing yyin at a new input file. 238 */ 239 #define YY_BUFFER_EOF_PENDING 2 240 241 }; 242 #endif /* !YY_STRUCT_YY_BUFFER_STATE */ 243 244 /* Stack of input buffers. */ 245 static size_t yy_buffer_stack_top = 0; /**< index of top of stack. */ 246 static size_t yy_buffer_stack_max = 0; /**< capacity of stack. */ 247 static YY_BUFFER_STATE * yy_buffer_stack = 0; /**< Stack as an array. */ 248 249 /* We provide macros for accessing buffer states in case in the 250 * future we want to put the buffer states in a more general 251 * "scanner state". 252 * 253 * Returns the top of the stack, or NULL. 254 */ 255 #define YY_CURRENT_BUFFER ( (yy_buffer_stack) \ 256 ? (yy_buffer_stack)[(yy_buffer_stack_top)] \ 257 : NULL) 258 259 /* Same as previous macro, but useful when we know that the buffer stack is not 260 * NULL or when we need an lvalue. For internal use only. 261 */ 262 #define YY_CURRENT_BUFFER_LVALUE (yy_buffer_stack)[(yy_buffer_stack_top)] 263 264 /* yy_hold_char holds the character lost when yytext is formed. */ 265 static char yy_hold_char; 266 static int yy_n_chars; /* number of characters read into yy_ch_buf */ 267 int yyleng; 268 269 /* Points to current character in buffer. */ 270 static char *yy_c_buf_p = (char *) 0; 271 static int yy_init = 1; /* whether we need to initialize */ 272 static int yy_start = 0; /* start state number */ 273 274 /* Flag which is used to allow yywrap()'s to do buffer switches 275 * instead of setting up a fresh yyin. A bit of a hack ... 276 */ 277 static int yy_did_buffer_switch_on_eof; 278 279 void yyrestart (FILE *input_file ); 280 void yy_switch_to_buffer (YY_BUFFER_STATE new_buffer ); 281 YY_BUFFER_STATE yy_create_buffer (FILE *file,int size ); 282 void yy_delete_buffer (YY_BUFFER_STATE b ); 283 void yy_flush_buffer (YY_BUFFER_STATE b ); 284 void yypush_buffer_state (YY_BUFFER_STATE new_buffer ); 285 void yypop_buffer_state (void ); 286 287 static void yyensure_buffer_stack (void ); 288 static void yy_load_buffer_state (void ); 289 static void yy_init_buffer (YY_BUFFER_STATE b,FILE *file ); 290 291 #define YY_FLUSH_BUFFER yy_flush_buffer(YY_CURRENT_BUFFER ) 292 293 YY_BUFFER_STATE yy_scan_buffer (char *base,yy_size_t size ); 294 YY_BUFFER_STATE yy_scan_string (yyconst char *yy_str ); 295 YY_BUFFER_STATE yy_scan_bytes (yyconst char *bytes,int len ); 296 297 void *yyalloc (yy_size_t ); 298 void *yyrealloc (void *,yy_size_t ); 299 void yyfree (void * ); 300 301 #define yy_new_buffer yy_create_buffer 302 303 #define yy_set_interactive(is_interactive) \ 304 { \ 305 if ( ! YY_CURRENT_BUFFER ){ \ 306 yyensure_buffer_stack (); \ 307 YY_CURRENT_BUFFER_LVALUE = \ 308 yy_create_buffer(yyin,YY_BUF_SIZE ); \ 309 } \ 310 YY_CURRENT_BUFFER_LVALUE->yy_is_interactive = is_interactive; \ 311 } 312 313 #define yy_set_bol(at_bol) \ 314 { \ 315 if ( ! YY_CURRENT_BUFFER ){\ 316 yyensure_buffer_stack (); \ 317 YY_CURRENT_BUFFER_LVALUE = \ 318 yy_create_buffer(yyin,YY_BUF_SIZE ); \ 319 } \ 320 YY_CURRENT_BUFFER_LVALUE->yy_at_bol = at_bol; \ 321 } 322 323 #define YY_AT_BOL() (YY_CURRENT_BUFFER_LVALUE->yy_at_bol) 324 325 /* Begin user sect3 */ 326 327 #define yywrap(n) 1 328 #define YY_SKIP_YYWRAP 329 330 typedef unsigned char YY_CHAR; 331 332 FILE *yyin = (FILE *) 0, *yyout = (FILE *) 0; 333 334 typedef int yy_state_type; 335 336 extern int yylineno; 337 338 int yylineno = 1; 339 340 extern char *yytext; 341 #define yytext_ptr yytext 342 343 static yy_state_type yy_get_previous_state (void ); 344 static yy_state_type yy_try_NUL_trans (yy_state_type current_state ); 345 static int yy_get_next_buffer (void ); 346 static void yy_fatal_error (yyconst char msg[] ); 347 348 /* Done after the current pattern has been matched and before the 349 * corresponding action - sets up yytext. 350 */ 351 #define YY_DO_BEFORE_ACTION \ 352 (yytext_ptr) = yy_bp; \ 353 yyleng = (size_t) (yy_cp - yy_bp); \ 354 (yy_hold_char) = *yy_cp; \ 355 *yy_cp = '\0'; \ 356 (yy_c_buf_p) = yy_cp; 357 358 #define YY_NUM_RULES 29 359 #define YY_END_OF_BUFFER 30 360 /* This struct is not used in this scanner, 361 but its presence is necessary. */ 362 struct yy_trans_info 363 { 364 flex_int32_t yy_verify; 365 flex_int32_t yy_nxt; 366 }; 367 static yyconst flex_int16_t yy_accept[39] = 368 { 0, 369 0, 0, 30, 28, 1, 1, 27, 23, 12, 6, 370 7, 21, 24, 25, 22, 3, 4, 17, 28, 15, 371 5, 11, 10, 26, 14, 9, 3, 0, 4, 19, 372 18, 13, 16, 20, 5, 8, 2, 0 373 } ; 374 375 static yyconst flex_int32_t yy_ec[256] = 376 { 0, 377 1, 1, 1, 1, 1, 1, 1, 1, 2, 3, 378 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 379 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 380 1, 2, 4, 1, 1, 1, 5, 6, 1, 7, 381 8, 9, 10, 1, 11, 1, 12, 13, 14, 14, 382 14, 14, 14, 14, 14, 15, 15, 1, 1, 16, 383 17, 18, 1, 1, 19, 19, 19, 19, 19, 19, 384 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 385 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 386 1, 1, 1, 21, 20, 1, 19, 19, 19, 19, 387 388 19, 19, 20, 20, 20, 20, 20, 20, 20, 20, 389 20, 20, 20, 20, 20, 20, 20, 20, 20, 22, 390 20, 20, 1, 23, 1, 24, 1, 1, 1, 1, 391 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 392 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 393 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 394 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 395 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 396 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 397 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 398 399 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 400 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 401 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 402 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 403 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 404 1, 1, 1, 1, 1 405 } ; 406 407 static yyconst flex_int32_t yy_meta[25] = 408 { 0, 409 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 410 1, 1, 2, 2, 2, 1, 1, 1, 2, 3, 411 1, 3, 1, 1 412 } ; 413 414 static yyconst flex_int16_t yy_base[41] = 415 { 0, 416 0, 0, 47, 48, 48, 48, 29, 48, 39, 48, 417 48, 48, 48, 48, 48, 12, 14, 14, 27, 15, 418 0, 48, 20, 48, 48, 48, 22, 0, 24, 48, 419 48, 48, 48, 48, 0, 48, 0, 48, 38, 40 420 } ; 421 422 static yyconst flex_int16_t yy_def[41] = 423 { 0, 424 38, 1, 38, 38, 38, 38, 38, 38, 38, 38, 425 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 426 39, 38, 38, 38, 38, 38, 38, 40, 38, 38, 427 38, 38, 38, 38, 39, 38, 40, 0, 38, 38 428 } ; 429 430 static yyconst flex_int16_t yy_nxt[73] = 431 { 0, 432 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 433 14, 15, 16, 17, 17, 18, 19, 20, 21, 21, 434 22, 21, 23, 24, 27, 27, 29, 29, 29, 30, 435 31, 33, 34, 28, 27, 27, 29, 29, 29, 35, 436 35, 37, 36, 32, 26, 25, 38, 3, 38, 38, 437 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 438 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 439 38, 38 440 } ; 441 442 static yyconst flex_int16_t yy_chk[73] = 443 { 0, 444 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 445 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 446 1, 1, 1, 1, 16, 16, 17, 17, 17, 18, 447 18, 20, 20, 16, 27, 27, 29, 29, 29, 39, 448 39, 40, 23, 19, 9, 7, 3, 38, 38, 38, 449 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 450 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 451 38, 38 452 } ; 453 454 static yy_state_type yy_last_accepting_state; 455 static char *yy_last_accepting_cpos; 456 457 extern int yy_flex_debug; 458 int yy_flex_debug = 0; 459 460 /* The intent behind this definition is that it'll catch 461 * any uses of REJECT which flex missed. 462 */ 463 #define REJECT reject_used_but_not_detected 464 #define yymore() yymore_used_but_not_detected 465 #define YY_MORE_ADJ 0 466 #define YY_RESTORE_YY_MORE_OFFSET 467 char *yytext; 468 #line 1 "arith_lex.l" 469 #line 2 "arith_lex.l" 470 /* $NetBSD: arith_lex.l,v 1.12.6.1 2005/04/07 11:38:58 tron Exp $ */ 471 472 /*- 473 * Copyright (c) 1993 474 * The Regents of the University of California. All rights reserved. 475 * 476 * This code is derived from software contributed to Berkeley by 477 * Kenneth Almquist. 478 * 479 * Redistribution and use in source and binary forms, with or without 480 * modification, are permitted provided that the following conditions 481 * are met: 482 * 1. Redistributions of source code must retain the above copyright 483 * notice, this list of conditions and the following disclaimer. 484 * 2. Redistributions in binary form must reproduce the above copyright 485 * notice, this list of conditions and the following disclaimer in the 486 * documentation and/or other materials provided with the distribution. 487 * 3. Neither the name of the University nor the names of its contributors 488 * may be used to endorse or promote products derived from this software 489 * without specific prior written permission. 490 * 491 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 492 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 493 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 494 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 495 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 496 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 497 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 498 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 499 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 500 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 501 * SUCH DAMAGE. 502 */ 503 504 #include <sys/cdefs.h> 505 #ifndef lint 506 #if 0 507 static char sccsid[] = "@(#)arith_lex.l 8.3 (Berkeley) 5/4/95"; 508 #else 509 __RCSID("$NetBSD: arith_lex.l,v 1.12.6.1 2005/04/07 11:38:58 tron Exp $"); 510 #endif 511 #endif /* not lint */ 512 513 #include <unistd.h> 514 #include "arith.h" 515 #include "error.h" 516 #include "expand.h" 517 #include "var.h" 518 519 extern int yylval; 520 extern char *arith_buf, *arith_startbuf; 521 #undef YY_INPUT 522 #define YY_INPUT(buf,result,max) \ 523 result = (*buf = *arith_buf++) ? 1 : YY_NULL; 524 #define YY_NO_UNPUT 525 #line 526 "arith_lex.c" 526 527 #define INITIAL 0 528 529 #ifndef YY_NO_UNISTD_H 530 /* Special case for "unistd.h", since it is non-ANSI. We include it way 531 * down here because we want the user's section 1 to have been scanned first. 532 * The user has a chance to override it with an option. 533 */ 534 #include <unistd.h> 535 #endif 536 537 #ifndef YY_EXTRA_TYPE 538 #define YY_EXTRA_TYPE void * 539 #endif 540 541 /* Macros after this point can all be overridden by user definitions in 542 * section 1. 543 */ 544 545 #ifndef YY_SKIP_YYWRAP 546 #ifdef __cplusplus 547 extern "C" int yywrap (void ); 548 #else 549 extern int yywrap (void ); 550 #endif 551 #endif 552 553 static void yyunput (int c,char *buf_ptr ); 554 555 #ifndef yytext_ptr 556 static void yy_flex_strncpy (char *,yyconst char *,int ); 557 #endif 558 559 #ifdef YY_NEED_STRLEN 560 static int yy_flex_strlen (yyconst char * ); 561 #endif 562 563 #ifndef YY_NO_INPUT 564 565 #ifdef __cplusplus 566 static int yyinput (void ); 567 #else 568 static int input (void ); 569 #endif 570 571 #endif 572 573 /* Amount of stuff to slurp up with each read. */ 574 #ifndef YY_READ_BUF_SIZE 575 #define YY_READ_BUF_SIZE 8192 576 #endif 577 578 /* Copy whatever the last rule matched to the standard output. */ 579 #ifndef ECHO 580 /* This used to be an fputs(), but since the string might contain NUL's, 581 * we now use fwrite(). 582 */ 583 #define ECHO (void) fwrite( yytext, yyleng, 1, yyout ) 584 #endif 585 586 /* Gets input and stuffs it into "buf". number of characters read, or YY_NULL, 587 * is returned in "result". 588 */ 589 #ifndef YY_INPUT 590 #define YY_INPUT(buf,result,max_size) \ 591 if ( YY_CURRENT_BUFFER_LVALUE->yy_is_interactive ) \ 592 { \ 593 int c = '*'; \ 594 size_t n; \ 595 for ( n = 0; n < max_size && \ 596 (c = getc( yyin )) != EOF && c != '\n'; ++n ) \ 597 buf[n] = (char) c; \ 598 if ( c == '\n' ) \ 599 buf[n++] = (char) c; \ 600 if ( c == EOF && ferror( yyin ) ) \ 601 YY_FATAL_ERROR( "input in flex scanner failed" ); \ 602 result = n; \ 603 } \ 604 else \ 605 { \ 606 errno=0; \ 607 while ( (result = fread(buf, 1, max_size, yyin))==0 && ferror(yyin)) \ 608 { \ 609 if( errno != EINTR) \ 610 { \ 611 YY_FATAL_ERROR( "input in flex scanner failed" ); \ 612 break; \ 613 } \ 614 errno=0; \ 615 clearerr(yyin); \ 616 } \ 617 }\ 618 \ 619 620 #endif 621 622 /* No semi-colon after return; correct usage is to write "yyterminate();" - 623 * we don't want an extra ';' after the "return" because that will cause 624 * some compilers to complain about unreachable statements. 625 */ 626 #ifndef yyterminate 627 #define yyterminate() return YY_NULL 628 #endif 629 630 /* Number of entries by which start-condition stack grows. */ 631 #ifndef YY_START_STACK_INCR 632 #define YY_START_STACK_INCR 25 633 #endif 634 635 /* Report a fatal error. */ 636 #ifndef YY_FATAL_ERROR 637 #define YY_FATAL_ERROR(msg) yy_fatal_error( msg ) 638 #endif 639 640 /* end tables serialization structures and prototypes */ 641 642 /* Default declaration of generated scanner - a define so the user can 643 * easily add parameters. 644 */ 645 #ifndef YY_DECL 646 #define YY_DECL_IS_OURS 1 647 648 extern int yylex (void); 649 650 #define YY_DECL int yylex (void) 651 #endif /* !YY_DECL */ 652 653 /* Code executed at the beginning of each rule, after yytext and yyleng 654 * have been set up. 655 */ 656 #ifndef YY_USER_ACTION 657 #define YY_USER_ACTION 658 #endif 659 660 /* Code executed at the end of each rule. */ 661 #ifndef YY_BREAK 662 #define YY_BREAK break; 663 #endif 664 665 #define YY_RULE_SETUP \ 666 YY_USER_ACTION 667 668 /** The main scanner function which does all the work. 669 */ 670 YY_DECL 671 { 672 register yy_state_type yy_current_state; 673 register char *yy_cp, *yy_bp; 674 register int yy_act; 675 676 #line 60 "arith_lex.l" 677 678 #line 679 "arith_lex.c" 679 680 if ( (yy_init) ) 681 { 682 (yy_init) = 0; 683 684 #ifdef YY_USER_INIT 685 YY_USER_INIT; 686 #endif 687 688 if ( ! (yy_start) ) 689 (yy_start) = 1; /* first start state */ 690 691 if ( ! yyin ) 692 yyin = stdin; 693 694 if ( ! yyout ) 695 yyout = stdout; 696 697 if ( ! YY_CURRENT_BUFFER ) { 698 yyensure_buffer_stack (); 699 YY_CURRENT_BUFFER_LVALUE = 700 yy_create_buffer(yyin,YY_BUF_SIZE ); 701 } 702 703 yy_load_buffer_state( ); 704 } 705 706 while ( 1 ) /* loops until end-of-file is reached */ 707 { 708 yy_cp = (yy_c_buf_p); 709 710 /* Support of yytext. */ 711 *yy_cp = (yy_hold_char); 712 713 /* yy_bp points to the position in yy_ch_buf of the start of 714 * the current run. 715 */ 716 yy_bp = yy_cp; 717 718 yy_current_state = (yy_start); 719 yy_match: 720 do 721 { 722 register YY_CHAR yy_c = yy_ec[YY_SC_TO_UI(*yy_cp)]; 723 if ( yy_accept[yy_current_state] ) 724 { 725 (yy_last_accepting_state) = yy_current_state; 726 (yy_last_accepting_cpos) = yy_cp; 727 } 728 while ( yy_chk[yy_base[yy_current_state] + yy_c] != yy_current_state ) 729 { 730 yy_current_state = (int) yy_def[yy_current_state]; 731 if ( yy_current_state >= 39 ) 732 yy_c = yy_meta[(unsigned int) yy_c]; 733 } 734 yy_current_state = yy_nxt[yy_base[yy_current_state] + (unsigned int) yy_c]; 735 ++yy_cp; 736 } 737 while ( yy_base[yy_current_state] != 48 ); 738 739 yy_find_action: 740 yy_act = yy_accept[yy_current_state]; 741 if ( yy_act == 0 ) 742 { /* have to back up */ 743 yy_cp = (yy_last_accepting_cpos); 744 yy_current_state = (yy_last_accepting_state); 745 yy_act = yy_accept[yy_current_state]; 746 } 747 748 YY_DO_BEFORE_ACTION; 749 750 do_action: /* This label is used only to access EOF actions. */ 751 752 switch ( yy_act ) 753 { /* beginning of action switch */ 754 case 0: /* must back up */ 755 /* undo the effects of YY_DO_BEFORE_ACTION */ 756 *yy_cp = (yy_hold_char); 757 yy_cp = (yy_last_accepting_cpos); 758 yy_current_state = (yy_last_accepting_state); 759 goto yy_find_action; 760 761 case 1: 762 /* rule 1 can match eol */ 763 YY_RULE_SETUP 764 #line 61 "arith_lex.l" 765 { ; } 766 YY_BREAK 767 case 2: 768 YY_RULE_SETUP 769 #line 62 "arith_lex.l" 770 { yylval = strtol(yytext, 0, 0); return(ARITH_NUM); } 771 YY_BREAK 772 case 3: 773 YY_RULE_SETUP 774 #line 63 "arith_lex.l" 775 { yylval = strtol(yytext, 0, 0); return(ARITH_NUM); } 776 YY_BREAK 777 case 4: 778 YY_RULE_SETUP 779 #line 64 "arith_lex.l" 780 { yylval = strtol(yytext, 0, 0); return(ARITH_NUM); } 781 YY_BREAK 782 case 5: 783 YY_RULE_SETUP 784 #line 65 "arith_lex.l" 785 { char *v = lookupvar(yytext); 786 if (v) { 787 yylval = strtol(v, &v, 0); 788 if (*v == 0) 789 return ARITH_NUM; 790 } 791 error("arith: syntax error: \"%s\"", arith_startbuf); 792 } 793 YY_BREAK 794 case 6: 795 YY_RULE_SETUP 796 #line 73 "arith_lex.l" 797 { return(ARITH_LPAREN); } 798 YY_BREAK 799 case 7: 800 YY_RULE_SETUP 801 #line 74 "arith_lex.l" 802 { return(ARITH_RPAREN); } 803 YY_BREAK 804 case 8: 805 YY_RULE_SETUP 806 #line 75 "arith_lex.l" 807 { return(ARITH_OR); } 808 YY_BREAK 809 case 9: 810 YY_RULE_SETUP 811 #line 76 "arith_lex.l" 812 { return(ARITH_AND); } 813 YY_BREAK 814 case 10: 815 YY_RULE_SETUP 816 #line 77 "arith_lex.l" 817 { return(ARITH_BOR); } 818 YY_BREAK 819 case 11: 820 YY_RULE_SETUP 821 #line 78 "arith_lex.l" 822 { return(ARITH_BXOR); } 823 YY_BREAK 824 case 12: 825 YY_RULE_SETUP 826 #line 79 "arith_lex.l" 827 { return(ARITH_BAND); } 828 YY_BREAK 829 case 13: 830 YY_RULE_SETUP 831 #line 80 "arith_lex.l" 832 { return(ARITH_EQ); } 833 YY_BREAK 834 case 14: 835 YY_RULE_SETUP 836 #line 81 "arith_lex.l" 837 { return(ARITH_NE); } 838 YY_BREAK 839 case 15: 840 YY_RULE_SETUP 841 #line 82 "arith_lex.l" 842 { return(ARITH_GT); } 843 YY_BREAK 844 case 16: 845 YY_RULE_SETUP 846 #line 83 "arith_lex.l" 847 { return(ARITH_GE); } 848 YY_BREAK 849 case 17: 850 YY_RULE_SETUP 851 #line 84 "arith_lex.l" 852 { return(ARITH_LT); } 853 YY_BREAK 854 case 18: 855 YY_RULE_SETUP 856 #line 85 "arith_lex.l" 857 { return(ARITH_LE); } 858 YY_BREAK 859 case 19: 860 YY_RULE_SETUP 861 #line 86 "arith_lex.l" 862 { return(ARITH_LSHIFT); } 863 YY_BREAK 864 case 20: 865 YY_RULE_SETUP 866 #line 87 "arith_lex.l" 867 { return(ARITH_RSHIFT); } 868 YY_BREAK 869 case 21: 870 YY_RULE_SETUP 871 #line 88 "arith_lex.l" 872 { return(ARITH_MUL); } 873 YY_BREAK 874 case 22: 875 YY_RULE_SETUP 876 #line 89 "arith_lex.l" 877 { return(ARITH_DIV); } 878 YY_BREAK 879 case 23: 880 YY_RULE_SETUP 881 #line 90 "arith_lex.l" 882 { return(ARITH_REM); } 883 YY_BREAK 884 case 24: 885 YY_RULE_SETUP 886 #line 91 "arith_lex.l" 887 { return(ARITH_ADD); } 888 YY_BREAK 889 case 25: 890 YY_RULE_SETUP 891 #line 92 "arith_lex.l" 892 { return(ARITH_SUB); } 893 YY_BREAK 894 case 26: 895 YY_RULE_SETUP 896 #line 93 "arith_lex.l" 897 { return(ARITH_BNOT); } 898 YY_BREAK 899 case 27: 900 YY_RULE_SETUP 901 #line 94 "arith_lex.l" 902 { return(ARITH_NOT); } 903 YY_BREAK 904 case 28: 905 YY_RULE_SETUP 906 #line 95 "arith_lex.l" 907 { error("arith: syntax error: \"%s\"", arith_startbuf); } 908 YY_BREAK 909 case 29: 910 YY_RULE_SETUP 911 #line 96 "arith_lex.l" 912 ECHO; 913 YY_BREAK 914 #line 915 "arith_lex.c" 915 case YY_STATE_EOF(INITIAL): 916 yyterminate(); 917 918 case YY_END_OF_BUFFER: 919 { 920 /* Amount of text matched not including the EOB char. */ 921 int yy_amount_of_matched_text = (int) (yy_cp - (yytext_ptr)) - 1; 922 923 /* Undo the effects of YY_DO_BEFORE_ACTION. */ 924 *yy_cp = (yy_hold_char); 925 YY_RESTORE_YY_MORE_OFFSET 926 927 if ( YY_CURRENT_BUFFER_LVALUE->yy_buffer_status == YY_BUFFER_NEW ) 928 { 929 /* We're scanning a new file or input source. It's 930 * possible that this happened because the user 931 * just pointed yyin at a new source and called 932 * yylex(). If so, then we have to assure 933 * consistency between YY_CURRENT_BUFFER and our 934 * globals. Here is the right place to do so, because 935 * this is the first action (other than possibly a 936 * back-up) that will match for the new input source. 937 */ 938 (yy_n_chars) = YY_CURRENT_BUFFER_LVALUE->yy_n_chars; 939 YY_CURRENT_BUFFER_LVALUE->yy_input_file = yyin; 940 YY_CURRENT_BUFFER_LVALUE->yy_buffer_status = YY_BUFFER_NORMAL; 941 } 942 943 /* Note that here we test for yy_c_buf_p "<=" to the position 944 * of the first EOB in the buffer, since yy_c_buf_p will 945 * already have been incremented past the NUL character 946 * (since all states make transitions on EOB to the 947 * end-of-buffer state). Contrast this with the test 948 * in input(). 949 */ 950 if ( (yy_c_buf_p) <= &YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[(yy_n_chars)] ) 951 { /* This was really a NUL. */ 952 yy_state_type yy_next_state; 953 954 (yy_c_buf_p) = (yytext_ptr) + yy_amount_of_matched_text; 955 956 yy_current_state = yy_get_previous_state( ); 957 958 /* Okay, we're now positioned to make the NUL 959 * transition. We couldn't have 960 * yy_get_previous_state() go ahead and do it 961 * for us because it doesn't know how to deal 962 * with the possibility of jamming (and we don't 963 * want to build jamming into it because then it 964 * will run more slowly). 965 */ 966 967 yy_next_state = yy_try_NUL_trans( yy_current_state ); 968 969 yy_bp = (yytext_ptr) + YY_MORE_ADJ; 970 971 if ( yy_next_state ) 972 { 973 /* Consume the NUL. */ 974 yy_cp = ++(yy_c_buf_p); 975 yy_current_state = yy_next_state; 976 goto yy_match; 977 } 978 979 else 980 { 981 yy_cp = (yy_c_buf_p); 982 goto yy_find_action; 983 } 984 } 985 986 else switch ( yy_get_next_buffer( ) ) 987 { 988 case EOB_ACT_END_OF_FILE: 989 { 990 (yy_did_buffer_switch_on_eof) = 0; 991 992 if ( yywrap( ) ) 993 { 994 /* Note: because we've taken care in 995 * yy_get_next_buffer() to have set up 996 * yytext, we can now set up 997 * yy_c_buf_p so that if some total 998 * hoser (like flex itself) wants to 999 * call the scanner after we return the 1000 * YY_NULL, it'll still work - another 1001 * YY_NULL will get returned. 1002 */ 1003 (yy_c_buf_p) = (yytext_ptr) + YY_MORE_ADJ; 1004 1005 yy_act = YY_STATE_EOF(YY_START); 1006 goto do_action; 1007 } 1008 1009 else 1010 { 1011 if ( ! (yy_did_buffer_switch_on_eof) ) 1012 YY_NEW_FILE; 1013 } 1014 break; 1015 } 1016 1017 case EOB_ACT_CONTINUE_SCAN: 1018 (yy_c_buf_p) = 1019 (yytext_ptr) + yy_amount_of_matched_text; 1020 1021 yy_current_state = yy_get_previous_state( ); 1022 1023 yy_cp = (yy_c_buf_p); 1024 yy_bp = (yytext_ptr) + YY_MORE_ADJ; 1025 goto yy_match; 1026 1027 case EOB_ACT_LAST_MATCH: 1028 (yy_c_buf_p) = 1029 &YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[(yy_n_chars)]; 1030 1031 yy_current_state = yy_get_previous_state( ); 1032 1033 yy_cp = (yy_c_buf_p); 1034 yy_bp = (yytext_ptr) + YY_MORE_ADJ; 1035 goto yy_find_action; 1036 } 1037 break; 1038 } 1039 1040 default: 1041 YY_FATAL_ERROR( 1042 "fatal flex scanner internal error--no action found" ); 1043 } /* end of action switch */ 1044 } /* end of scanning one token */ 1045 } /* end of yylex */ 1046 1047 /* yy_get_next_buffer - try to read in a new buffer 1048 * 1049 * Returns a code representing an action: 1050 * EOB_ACT_LAST_MATCH - 1051 * EOB_ACT_CONTINUE_SCAN - continue scanning from current position 1052 * EOB_ACT_END_OF_FILE - end of file 1053 */ 1054 static int yy_get_next_buffer (void) 1055 { 1056 register char *dest = YY_CURRENT_BUFFER_LVALUE->yy_ch_buf; 1057 register char *source = (yytext_ptr); 1058 register int number_to_move, i; 1059 int ret_val; 1060 1061 if ( (yy_c_buf_p) > &YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[(yy_n_chars) + 1] ) 1062 YY_FATAL_ERROR( 1063 "fatal flex scanner internal error--end of buffer missed" ); 1064 1065 if ( YY_CURRENT_BUFFER_LVALUE->yy_fill_buffer == 0 ) 1066 { /* Don't try to fill the buffer, so this is an EOF. */ 1067 if ( (yy_c_buf_p) - (yytext_ptr) - YY_MORE_ADJ == 1 ) 1068 { 1069 /* We matched a single character, the EOB, so 1070 * treat this as a final EOF. 1071 */ 1072 return EOB_ACT_END_OF_FILE; 1073 } 1074 1075 else 1076 { 1077 /* We matched some text prior to the EOB, first 1078 * process it. 1079 */ 1080 return EOB_ACT_LAST_MATCH; 1081 } 1082 } 1083 1084 /* Try to read more data. */ 1085 1086 /* First move last chars to start of buffer. */ 1087 number_to_move = (int) ((yy_c_buf_p) - (yytext_ptr)) - 1; 1088 1089 for ( i = 0; i < number_to_move; ++i ) 1090 *(dest++) = *(source++); 1091 1092 if ( YY_CURRENT_BUFFER_LVALUE->yy_buffer_status == YY_BUFFER_EOF_PENDING ) 1093 /* don't do the read, it's not guaranteed to return an EOF, 1094 * just force an EOF 1095 */ 1096 YY_CURRENT_BUFFER_LVALUE->yy_n_chars = (yy_n_chars) = 0; 1097 1098 else 1099 { 1100 size_t num_to_read = 1101 YY_CURRENT_BUFFER_LVALUE->yy_buf_size - number_to_move - 1; 1102 1103 while ( num_to_read <= 0 ) 1104 { /* Not enough room in the buffer - grow it. */ 1105 1106 /* just a shorter name for the current buffer */ 1107 YY_BUFFER_STATE b = YY_CURRENT_BUFFER; 1108 1109 int yy_c_buf_p_offset = 1110 (int) ((yy_c_buf_p) - b->yy_ch_buf); 1111 1112 if ( b->yy_is_our_buffer ) 1113 { 1114 int new_size = b->yy_buf_size * 2; 1115 1116 if ( new_size <= 0 ) 1117 b->yy_buf_size += b->yy_buf_size / 8; 1118 else 1119 b->yy_buf_size *= 2; 1120 1121 b->yy_ch_buf = (char *) 1122 /* Include room in for 2 EOB chars. */ 1123 yyrealloc((void *) b->yy_ch_buf,b->yy_buf_size + 2 ); 1124 } 1125 else 1126 /* Can't grow it, we don't own it. */ 1127 b->yy_ch_buf = 0; 1128 1129 if ( ! b->yy_ch_buf ) 1130 YY_FATAL_ERROR( 1131 "fatal error - scanner input buffer overflow" ); 1132 1133 (yy_c_buf_p) = &b->yy_ch_buf[yy_c_buf_p_offset]; 1134 1135 num_to_read = YY_CURRENT_BUFFER_LVALUE->yy_buf_size - 1136 number_to_move - 1; 1137 1138 } 1139 1140 if ( num_to_read > YY_READ_BUF_SIZE ) 1141 num_to_read = YY_READ_BUF_SIZE; 1142 1143 /* Read in more data. */ 1144 YY_INPUT( (&YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[number_to_move]), 1145 (yy_n_chars), num_to_read ); 1146 1147 YY_CURRENT_BUFFER_LVALUE->yy_n_chars = (yy_n_chars); 1148 } 1149 1150 if ( (yy_n_chars) == 0 ) 1151 { 1152 if ( number_to_move == YY_MORE_ADJ ) 1153 { 1154 ret_val = EOB_ACT_END_OF_FILE; 1155 yyrestart(yyin ); 1156 } 1157 1158 else 1159 { 1160 ret_val = EOB_ACT_LAST_MATCH; 1161 YY_CURRENT_BUFFER_LVALUE->yy_buffer_status = 1162 YY_BUFFER_EOF_PENDING; 1163 } 1164 } 1165 1166 else 1167 ret_val = EOB_ACT_CONTINUE_SCAN; 1168 1169 (yy_n_chars) += number_to_move; 1170 YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[(yy_n_chars)] = YY_END_OF_BUFFER_CHAR; 1171 YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[(yy_n_chars) + 1] = YY_END_OF_BUFFER_CHAR; 1172 1173 (yytext_ptr) = &YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[0]; 1174 1175 return ret_val; 1176 } 1177 1178 /* yy_get_previous_state - get the state just before the EOB char was reached */ 1179 1180 static yy_state_type yy_get_previous_state (void) 1181 { 1182 register yy_state_type yy_current_state; 1183 register char *yy_cp; 1184 1185 yy_current_state = (yy_start); 1186 1187 for ( yy_cp = (yytext_ptr) + YY_MORE_ADJ; yy_cp < (yy_c_buf_p); ++yy_cp ) 1188 { 1189 register YY_CHAR yy_c = (*yy_cp ? yy_ec[YY_SC_TO_UI(*yy_cp)] : 1); 1190 if ( yy_accept[yy_current_state] ) 1191 { 1192 (yy_last_accepting_state) = yy_current_state; 1193 (yy_last_accepting_cpos) = yy_cp; 1194 } 1195 while ( yy_chk[yy_base[yy_current_state] + yy_c] != yy_current_state ) 1196 { 1197 yy_current_state = (int) yy_def[yy_current_state]; 1198 if ( yy_current_state >= 39 ) 1199 yy_c = yy_meta[(unsigned int) yy_c]; 1200 } 1201 yy_current_state = yy_nxt[yy_base[yy_current_state] + (unsigned int) yy_c]; 1202 } 1203 1204 return yy_current_state; 1205 } 1206 1207 /* yy_try_NUL_trans - try to make a transition on the NUL character 1208 * 1209 * synopsis 1210 * next_state = yy_try_NUL_trans( current_state ); 1211 */ 1212 static yy_state_type yy_try_NUL_trans (yy_state_type yy_current_state ) 1213 { 1214 register int yy_is_jam; 1215 register char *yy_cp = (yy_c_buf_p); 1216 1217 register YY_CHAR yy_c = 1; 1218 if ( yy_accept[yy_current_state] ) 1219 { 1220 (yy_last_accepting_state) = yy_current_state; 1221 (yy_last_accepting_cpos) = yy_cp; 1222 } 1223 while ( yy_chk[yy_base[yy_current_state] + yy_c] != yy_current_state ) 1224 { 1225 yy_current_state = (int) yy_def[yy_current_state]; 1226 if ( yy_current_state >= 39 ) 1227 yy_c = yy_meta[(unsigned int) yy_c]; 1228 } 1229 yy_current_state = yy_nxt[yy_base[yy_current_state] + (unsigned int) yy_c]; 1230 yy_is_jam = (yy_current_state == 38); 1231 1232 return yy_is_jam ? 0 : yy_current_state; 1233 } 1234 1235 static void yyunput (int c, register char * yy_bp ) 1236 { 1237 register char *yy_cp; 1238 1239 yy_cp = (yy_c_buf_p); 1240 1241 /* undo effects of setting up yytext */ 1242 *yy_cp = (yy_hold_char); 1243 1244 if ( yy_cp < YY_CURRENT_BUFFER_LVALUE->yy_ch_buf + 2 ) 1245 { /* need to shift things up to make room */ 1246 /* +2 for EOB chars. */ 1247 register int number_to_move = (yy_n_chars) + 2; 1248 register char *dest = &YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[ 1249 YY_CURRENT_BUFFER_LVALUE->yy_buf_size + 2]; 1250 register char *source = 1251 &YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[number_to_move]; 1252 1253 while ( source > YY_CURRENT_BUFFER_LVALUE->yy_ch_buf ) 1254 *--dest = *--source; 1255 1256 yy_cp += (int) (dest - source); 1257 yy_bp += (int) (dest - source); 1258 YY_CURRENT_BUFFER_LVALUE->yy_n_chars = 1259 (yy_n_chars) = YY_CURRENT_BUFFER_LVALUE->yy_buf_size; 1260 1261 if ( yy_cp < YY_CURRENT_BUFFER_LVALUE->yy_ch_buf + 2 ) 1262 YY_FATAL_ERROR( "flex scanner push-back overflow" ); 1263 } 1264 1265 *--yy_cp = (char) c; 1266 1267 (yytext_ptr) = yy_bp; 1268 (yy_hold_char) = *yy_cp; 1269 (yy_c_buf_p) = yy_cp; 1270 } 1271 1272 #ifndef YY_NO_INPUT 1273 #ifdef __cplusplus 1274 static int yyinput (void) 1275 #else 1276 static int input (void) 1277 #endif 1278 1279 { 1280 int c; 1281 1282 *(yy_c_buf_p) = (yy_hold_char); 1283 1284 if ( *(yy_c_buf_p) == YY_END_OF_BUFFER_CHAR ) 1285 { 1286 /* yy_c_buf_p now points to the character we want to return. 1287 * If this occurs *before* the EOB characters, then it's a 1288 * valid NUL; if not, then we've hit the end of the buffer. 1289 */ 1290 if ( (yy_c_buf_p) < &YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[(yy_n_chars)] ) 1291 /* This was really a NUL. */ 1292 *(yy_c_buf_p) = '\0'; 1293 1294 else 1295 { /* need more input */ 1296 int offset = (yy_c_buf_p) - (yytext_ptr); 1297 ++(yy_c_buf_p); 1298 1299 switch ( yy_get_next_buffer( ) ) 1300 { 1301 case EOB_ACT_LAST_MATCH: 1302 /* This happens because yy_g_n_b() 1303 * sees that we've accumulated a 1304 * token and flags that we need to 1305 * try matching the token before 1306 * proceeding. But for input(), 1307 * there's no matching to consider. 1308 * So convert the EOB_ACT_LAST_MATCH 1309 * to EOB_ACT_END_OF_FILE. 1310 */ 1311 1312 /* Reset buffer status. */ 1313 yyrestart(yyin ); 1314 1315 /*FALLTHROUGH*/ 1316 1317 case EOB_ACT_END_OF_FILE: 1318 { 1319 if ( yywrap( ) ) 1320 return EOF; 1321 1322 if ( ! (yy_did_buffer_switch_on_eof) ) 1323 YY_NEW_FILE; 1324 #ifdef __cplusplus 1325 return yyinput(); 1326 #else 1327 return input(); 1328 #endif 1329 } 1330 1331 case EOB_ACT_CONTINUE_SCAN: 1332 (yy_c_buf_p) = (yytext_ptr) + offset; 1333 break; 1334 } 1335 } 1336 } 1337 1338 c = *(unsigned char *) (yy_c_buf_p); /* cast for 8-bit char's */ 1339 *(yy_c_buf_p) = '\0'; /* preserve yytext */ 1340 (yy_hold_char) = *++(yy_c_buf_p); 1341 1342 return c; 1343 } 1344 #endif /* ifndef YY_NO_INPUT */ 1345 1346 /** Immediately switch to a different input stream. 1347 * @param input_file A readable stream. 1348 * 1349 * @note This function does not reset the start condition to @c INITIAL . 1350 */ 1351 void yyrestart (FILE * input_file ) 1352 { 1353 1354 if ( ! YY_CURRENT_BUFFER ){ 1355 yyensure_buffer_stack (); 1356 YY_CURRENT_BUFFER_LVALUE = 1357 yy_create_buffer(yyin,YY_BUF_SIZE ); 1358 } 1359 1360 yy_init_buffer(YY_CURRENT_BUFFER,input_file ); 1361 yy_load_buffer_state( ); 1362 } 1363 1364 /** Switch to a different input buffer. 1365 * @param new_buffer The new input buffer. 1366 * 1367 */ 1368 void yy_switch_to_buffer (YY_BUFFER_STATE new_buffer ) 1369 { 1370 1371 /* TODO. We should be able to replace this entire function body 1372 * with 1373 * yypop_buffer_state(); 1374 * yypush_buffer_state(new_buffer); 1375 */ 1376 yyensure_buffer_stack (); 1377 if ( YY_CURRENT_BUFFER == new_buffer ) 1378 return; 1379 1380 if ( YY_CURRENT_BUFFER ) 1381 { 1382 /* Flush out information for old buffer. */ 1383 *(yy_c_buf_p) = (yy_hold_char); 1384 YY_CURRENT_BUFFER_LVALUE->yy_buf_pos = (yy_c_buf_p); 1385 YY_CURRENT_BUFFER_LVALUE->yy_n_chars = (yy_n_chars); 1386 } 1387 1388 YY_CURRENT_BUFFER_LVALUE = new_buffer; 1389 yy_load_buffer_state( ); 1390 1391 /* We don't actually know whether we did this switch during 1392 * EOF (yywrap()) processing, but the only time this flag 1393 * is looked at is after yywrap() is called, so it's safe 1394 * to go ahead and always set it. 1395 */ 1396 (yy_did_buffer_switch_on_eof) = 1; 1397 } 1398 1399 static void yy_load_buffer_state (void) 1400 { 1401 (yy_n_chars) = YY_CURRENT_BUFFER_LVALUE->yy_n_chars; 1402 (yytext_ptr) = (yy_c_buf_p) = YY_CURRENT_BUFFER_LVALUE->yy_buf_pos; 1403 yyin = YY_CURRENT_BUFFER_LVALUE->yy_input_file; 1404 (yy_hold_char) = *(yy_c_buf_p); 1405 } 1406 1407 /** Allocate and initialize an input buffer state. 1408 * @param file A readable stream. 1409 * @param size The character buffer size in bytes. When in doubt, use @c YY_BUF_SIZE. 1410 * 1411 * @return the allocated buffer state. 1412 */ 1413 YY_BUFFER_STATE yy_create_buffer (FILE * file, int size ) 1414 { 1415 YY_BUFFER_STATE b; 1416 1417 b = (YY_BUFFER_STATE) yyalloc(sizeof( struct yy_buffer_state ) ); 1418 if ( ! b ) 1419 YY_FATAL_ERROR( "out of dynamic memory in yy_create_buffer()" ); 1420 1421 b->yy_buf_size = size; 1422 1423 /* yy_ch_buf has to be 2 characters longer than the size given because 1424 * we need to put in 2 end-of-buffer characters. 1425 */ 1426 b->yy_ch_buf = (char *) yyalloc(b->yy_buf_size + 2 ); 1427 if ( ! b->yy_ch_buf ) 1428 YY_FATAL_ERROR( "out of dynamic memory in yy_create_buffer()" ); 1429 1430 b->yy_is_our_buffer = 1; 1431 1432 yy_init_buffer(b,file ); 1433 1434 return b; 1435 } 1436 1437 /** Destroy the buffer. 1438 * @param b a buffer created with yy_create_buffer() 1439 * 1440 */ 1441 void yy_delete_buffer (YY_BUFFER_STATE b ) 1442 { 1443 1444 if ( ! b ) 1445 return; 1446 1447 if ( b == YY_CURRENT_BUFFER ) /* Not sure if we should pop here. */ 1448 YY_CURRENT_BUFFER_LVALUE = (YY_BUFFER_STATE) 0; 1449 1450 if ( b->yy_is_our_buffer ) 1451 yyfree((void *) b->yy_ch_buf ); 1452 1453 yyfree((void *) b ); 1454 } 1455 1456 #ifndef __cplusplus 1457 extern int isatty (int ); 1458 #endif /* __cplusplus */ 1459 1460 /* Initializes or reinitializes a buffer. 1461 * This function is sometimes called more than once on the same buffer, 1462 * such as during a yyrestart() or at EOF. 1463 */ 1464 static void yy_init_buffer (YY_BUFFER_STATE b, FILE * file ) 1465 1466 { 1467 int oerrno = errno; 1468 1469 yy_flush_buffer(b ); 1470 1471 b->yy_input_file = file; 1472 b->yy_fill_buffer = 1; 1473 1474 /* If b is the current buffer, then yy_init_buffer was _probably_ 1475 * called from yyrestart() or through yy_get_next_buffer. 1476 * In that case, we don't want to reset the lineno or column. 1477 */ 1478 if (b != YY_CURRENT_BUFFER){ 1479 b->yy_bs_lineno = 1; 1480 b->yy_bs_column = 0; 1481 } 1482 1483 b->yy_is_interactive = file ? (isatty( fileno(file) ) > 0) : 0; 1484 1485 errno = oerrno; 1486 } 1487 1488 /** Discard all buffered characters. On the next scan, YY_INPUT will be called. 1489 * @param b the buffer state to be flushed, usually @c YY_CURRENT_BUFFER. 1490 * 1491 */ 1492 void yy_flush_buffer (YY_BUFFER_STATE b ) 1493 { 1494 if ( ! b ) 1495 return; 1496 1497 b->yy_n_chars = 0; 1498 1499 /* We always need two end-of-buffer characters. The first causes 1500 * a transition to the end-of-buffer state. The second causes 1501 * a jam in that state. 1502 */ 1503 b->yy_ch_buf[0] = YY_END_OF_BUFFER_CHAR; 1504 b->yy_ch_buf[1] = YY_END_OF_BUFFER_CHAR; 1505 1506 b->yy_buf_pos = &b->yy_ch_buf[0]; 1507 1508 b->yy_at_bol = 1; 1509 b->yy_buffer_status = YY_BUFFER_NEW; 1510 1511 if ( b == YY_CURRENT_BUFFER ) 1512 yy_load_buffer_state( ); 1513 } 1514 1515 /** Pushes the new state onto the stack. The new state becomes 1516 * the current state. This function will allocate the stack 1517 * if necessary. 1518 * @param new_buffer The new state. 1519 * 1520 */ 1521 void yypush_buffer_state (YY_BUFFER_STATE new_buffer ) 1522 { 1523 if (new_buffer == NULL) 1524 return; 1525 1526 yyensure_buffer_stack(); 1527 1528 /* This block is copied from yy_switch_to_buffer. */ 1529 if ( YY_CURRENT_BUFFER ) 1530 { 1531 /* Flush out information for old buffer. */ 1532 *(yy_c_buf_p) = (yy_hold_char); 1533 YY_CURRENT_BUFFER_LVALUE->yy_buf_pos = (yy_c_buf_p); 1534 YY_CURRENT_BUFFER_LVALUE->yy_n_chars = (yy_n_chars); 1535 } 1536 1537 /* Only push if top exists. Otherwise, replace top. */ 1538 if (YY_CURRENT_BUFFER) 1539 (yy_buffer_stack_top)++; 1540 YY_CURRENT_BUFFER_LVALUE = new_buffer; 1541 1542 /* copied from yy_switch_to_buffer. */ 1543 yy_load_buffer_state( ); 1544 (yy_did_buffer_switch_on_eof) = 1; 1545 } 1546 1547 /** Removes and deletes the top of the stack, if present. 1548 * The next element becomes the new top. 1549 * 1550 */ 1551 void yypop_buffer_state (void) 1552 { 1553 if (!YY_CURRENT_BUFFER) 1554 return; 1555 1556 yy_delete_buffer(YY_CURRENT_BUFFER ); 1557 YY_CURRENT_BUFFER_LVALUE = NULL; 1558 if ((yy_buffer_stack_top) > 0) 1559 --(yy_buffer_stack_top); 1560 1561 if (YY_CURRENT_BUFFER) { 1562 yy_load_buffer_state( ); 1563 (yy_did_buffer_switch_on_eof) = 1; 1564 } 1565 } 1566 1567 /* Allocates the stack if it does not exist. 1568 * Guarantees space for at least one push. 1569 */ 1570 static void yyensure_buffer_stack (void) 1571 { 1572 int num_to_alloc; 1573 1574 if (!(yy_buffer_stack)) { 1575 1576 /* First allocation is just for 2 elements, since we don't know if this 1577 * scanner will even need a stack. We use 2 instead of 1 to avoid an 1578 * immediate realloc on the next call. 1579 */ 1580 num_to_alloc = 1; 1581 (yy_buffer_stack) = (struct yy_buffer_state**)yyalloc 1582 (num_to_alloc * sizeof(struct yy_buffer_state*) 1583 ); 1584 1585 memset((yy_buffer_stack), 0, num_to_alloc * sizeof(struct yy_buffer_state*)); 1586 1587 (yy_buffer_stack_max) = num_to_alloc; 1588 (yy_buffer_stack_top) = 0; 1589 return; 1590 } 1591 1592 if ((yy_buffer_stack_top) >= ((yy_buffer_stack_max)) - 1){ 1593 1594 /* Increase the buffer to prepare for a possible push. */ 1595 int grow_size = 8 /* arbitrary grow size */; 1596 1597 num_to_alloc = (yy_buffer_stack_max) + grow_size; 1598 (yy_buffer_stack) = (struct yy_buffer_state**)yyrealloc 1599 ((yy_buffer_stack), 1600 num_to_alloc * sizeof(struct yy_buffer_state*) 1601 ); 1602 1603 /* zero only the new slots.*/ 1604 memset((yy_buffer_stack) + (yy_buffer_stack_max), 0, grow_size * sizeof(struct yy_buffer_state*)); 1605 (yy_buffer_stack_max) = num_to_alloc; 1606 } 1607 } 1608 1609 /** Setup the input buffer state to scan directly from a user-specified character buffer. 1610 * @param base the character buffer 1611 * @param size the size in bytes of the character buffer 1612 * 1613 * @return the newly allocated buffer state object. 1614 */ 1615 YY_BUFFER_STATE yy_scan_buffer (char * base, yy_size_t size ) 1616 { 1617 YY_BUFFER_STATE b; 1618 1619 if ( size < 2 || 1620 base[size-2] != YY_END_OF_BUFFER_CHAR || 1621 base[size-1] != YY_END_OF_BUFFER_CHAR ) 1622 /* They forgot to leave room for the EOB's. */ 1623 return 0; 1624 1625 b = (YY_BUFFER_STATE) yyalloc(sizeof( struct yy_buffer_state ) ); 1626 if ( ! b ) 1627 YY_FATAL_ERROR( "out of dynamic memory in yy_scan_buffer()" ); 1628 1629 b->yy_buf_size = size - 2; /* "- 2" to take care of EOB's */ 1630 b->yy_buf_pos = b->yy_ch_buf = base; 1631 b->yy_is_our_buffer = 0; 1632 b->yy_input_file = 0; 1633 b->yy_n_chars = b->yy_buf_size; 1634 b->yy_is_interactive = 0; 1635 b->yy_at_bol = 1; 1636 b->yy_fill_buffer = 0; 1637 b->yy_buffer_status = YY_BUFFER_NEW; 1638 1639 yy_switch_to_buffer(b ); 1640 1641 return b; 1642 } 1643 1644 /** Setup the input buffer state to scan a string. The next call to yylex() will 1645 * scan from a @e copy of @a str. 1646 * @param str a NUL-terminated string to scan 1647 * 1648 * @return the newly allocated buffer state object. 1649 * @note If you want to scan bytes that may contain NUL values, then use 1650 * yy_scan_bytes() instead. 1651 */ 1652 YY_BUFFER_STATE yy_scan_string (yyconst char * yy_str ) 1653 { 1654 1655 return yy_scan_bytes(yy_str,strlen(yy_str) ); 1656 } 1657 1658 /** Setup the input buffer state to scan the given bytes. The next call to yylex() will 1659 * scan from a @e copy of @a bytes. 1660 * @param bytes the byte buffer to scan 1661 * @param len the number of bytes in the buffer pointed to by @a bytes. 1662 * 1663 * @return the newly allocated buffer state object. 1664 */ 1665 YY_BUFFER_STATE yy_scan_bytes (yyconst char * bytes, int len ) 1666 { 1667 YY_BUFFER_STATE b; 1668 char *buf; 1669 yy_size_t n; 1670 int i; 1671 1672 /* Get memory for full buffer, including space for trailing EOB's. */ 1673 n = len + 2; 1674 buf = (char *) yyalloc(n ); 1675 if ( ! buf ) 1676 YY_FATAL_ERROR( "out of dynamic memory in yy_scan_bytes()" ); 1677 1678 for ( i = 0; i < len; ++i ) 1679 buf[i] = bytes[i]; 1680 1681 buf[len] = buf[len+1] = YY_END_OF_BUFFER_CHAR; 1682 1683 b = yy_scan_buffer(buf,n ); 1684 if ( ! b ) 1685 YY_FATAL_ERROR( "bad buffer in yy_scan_bytes()" ); 1686 1687 /* It's okay to grow etc. this buffer, and we should throw it 1688 * away when we're done. 1689 */ 1690 b->yy_is_our_buffer = 1; 1691 1692 return b; 1693 } 1694 1695 #ifndef YY_EXIT_FAILURE 1696 #define YY_EXIT_FAILURE 2 1697 #endif 1698 1699 static void yy_fatal_error (yyconst char* msg ) 1700 { 1701 (void) fprintf( stderr, "%s\n", msg ); 1702 exit( YY_EXIT_FAILURE ); 1703 } 1704 1705 /* Redefine yyless() so it works in section 3 code. */ 1706 1707 #undef yyless 1708 #define yyless(n) \ 1709 do \ 1710 { \ 1711 /* Undo effects of setting up yytext. */ \ 1712 int yyless_macro_arg = (n); \ 1713 YY_LESS_LINENO(yyless_macro_arg);\ 1714 yytext[yyleng] = (yy_hold_char); \ 1715 (yy_c_buf_p) = yytext + yyless_macro_arg; \ 1716 (yy_hold_char) = *(yy_c_buf_p); \ 1717 *(yy_c_buf_p) = '\0'; \ 1718 yyleng = yyless_macro_arg; \ 1719 } \ 1720 while ( 0 ) 1721 1722 /* Accessor methods (get/set functions) to struct members. */ 1723 1724 /** Get the current line number. 1725 * 1726 */ 1727 int yyget_lineno (void) 1728 { 1729 1730 return yylineno; 1731 } 1732 1733 /** Get the input stream. 1734 * 1735 */ 1736 FILE *yyget_in (void) 1737 { 1738 return yyin; 1739 } 1740 1741 /** Get the output stream. 1742 * 1743 */ 1744 FILE *yyget_out (void) 1745 { 1746 return yyout; 1747 } 1748 1749 /** Get the length of the current token. 1750 * 1751 */ 1752 int yyget_leng (void) 1753 { 1754 return yyleng; 1755 } 1756 1757 /** Get the current token. 1758 * 1759 */ 1760 1761 char *yyget_text (void) 1762 { 1763 return yytext; 1764 } 1765 1766 /** Set the current line number. 1767 * @param line_number 1768 * 1769 */ 1770 void yyset_lineno (int line_number ) 1771 { 1772 1773 yylineno = line_number; 1774 } 1775 1776 /** Set the input stream. This does not discard the current 1777 * input buffer. 1778 * @param in_str A readable stream. 1779 * 1780 * @see yy_switch_to_buffer 1781 */ 1782 void yyset_in (FILE * in_str ) 1783 { 1784 yyin = in_str ; 1785 } 1786 1787 void yyset_out (FILE * out_str ) 1788 { 1789 yyout = out_str ; 1790 } 1791 1792 int yyget_debug (void) 1793 { 1794 return yy_flex_debug; 1795 } 1796 1797 void yyset_debug (int bdebug ) 1798 { 1799 yy_flex_debug = bdebug ; 1800 } 1801 1802 /* yylex_destroy is for both reentrant and non-reentrant scanners. */ 1803 int yylex_destroy (void) 1804 { 1805 1806 /* Pop the buffer stack, destroying each element. */ 1807 while(YY_CURRENT_BUFFER){ 1808 yy_delete_buffer(YY_CURRENT_BUFFER ); 1809 YY_CURRENT_BUFFER_LVALUE = NULL; 1810 yypop_buffer_state(); 1811 } 1812 1813 /* Destroy the stack itself. */ 1814 yyfree((yy_buffer_stack) ); 1815 (yy_buffer_stack) = NULL; 1816 1817 return 0; 1818 } 1819 1820 /* 1821 * Internal utility routines. 1822 */ 1823 1824 #ifndef yytext_ptr 1825 static void yy_flex_strncpy (char* s1, yyconst char * s2, int n ) 1826 { 1827 register int i; 1828 for ( i = 0; i < n; ++i ) 1829 s1[i] = s2[i]; 1830 } 1831 #endif 1832 1833 #ifdef YY_NEED_STRLEN 1834 static int yy_flex_strlen (yyconst char * s ) 1835 { 1836 register int n; 1837 for ( n = 0; s[n]; ++n ) 1838 ; 1839 1840 return n; 1841 } 1842 #endif 1843 1844 void *yyalloc (yy_size_t size ) 1845 { 1846 return (void *) malloc( size ); 1847 } 1848 1849 void *yyrealloc (void * ptr, yy_size_t size ) 1850 { 1851 /* The cast to (char *) in the following accommodates both 1852 * implementations that use char* generic pointers, and those 1853 * that use void* generic pointers. It works with the latter 1854 * because both ANSI C and C++ allow castless assignment from 1855 * any pointer type to void*, and deal with argument conversions 1856 * as though doing an assignment. 1857 */ 1858 return (void *) realloc( (char *) ptr, size ); 1859 } 1860 1861 void yyfree (void * ptr ) 1862 { 1863 free( (char *) ptr ); /* see yyrealloc() for (char *) cast */ 1864 } 1865 1866 #define YYTABLES_NAME "yytables" 1867 1868 #undef YY_NEW_FILE 1869 #undef YY_FLUSH_BUFFER 1870 #undef yy_set_bol 1871 #undef yy_new_buffer 1872 #undef yy_set_interactive 1873 #undef yytext_ptr 1874 #undef YY_DO_BEFORE_ACTION 1875 1876 #ifdef YY_DECL_IS_OURS 1877 #undef YY_DECL_IS_OURS 1878 #undef YY_DECL 1879 #endif 1880 #line 96 "arith_lex.l" 1881 1882 1883 1884 void 1885 arith_lex_reset() { 1886 #ifdef YY_NEW_FILE 1887 YY_NEW_FILE; 1888 #endif 1889 } 1890 1891
