calclex.c revision 1.1.1.2
1 2 #line 3 "calclex.c" 3 4 #define YY_INT_ALIGNED short int 5 6 /* A lexical scanner generated by flex */ 7 8 #define FLEX_SCANNER 9 #define YY_FLEX_MAJOR_VERSION 2 10 #define YY_FLEX_MINOR_VERSION 5 11 #define YY_FLEX_SUBMINOR_VERSION 37 12 #if YY_FLEX_SUBMINOR_VERSION > 0 13 #define FLEX_BETA 14 #endif 15 16 /* First, we deal with platform-specific or compiler-specific issues. */ 17 18 /* begin standard C headers. */ 19 #include <stdio.h> 20 #include <string.h> 21 #include <errno.h> 22 #include <stdlib.h> 23 24 /* end standard C headers. */ 25 26 /* flex integer type definitions */ 27 28 #ifndef FLEXINT_H 29 #define FLEXINT_H 30 31 /* C99 systems have <inttypes.h>. Non-C99 systems may or may not. */ 32 33 #if defined (__STDC_VERSION__) && __STDC_VERSION__ >= 199901L 34 35 /* C99 says to define __STDC_LIMIT_MACROS before including stdint.h, 36 * if you want the limit (max/min) macros for int types. 37 */ 38 #ifndef __STDC_LIMIT_MACROS 39 #define __STDC_LIMIT_MACROS 1 40 #endif 41 42 #include <inttypes.h> 43 typedef int8_t flex_int8_t; 44 typedef uint8_t flex_uint8_t; 45 typedef int16_t flex_int16_t; 46 typedef uint16_t flex_uint16_t; 47 typedef int32_t flex_int32_t; 48 typedef uint32_t flex_uint32_t; 49 #else 50 typedef signed char flex_int8_t; 51 typedef short int flex_int16_t; 52 typedef int flex_int32_t; 53 typedef unsigned char flex_uint8_t; 54 typedef unsigned short int flex_uint16_t; 55 typedef unsigned int flex_uint32_t; 56 57 /* Limits of integral types. */ 58 #ifndef INT8_MIN 59 #define INT8_MIN (-128) 60 #endif 61 #ifndef INT16_MIN 62 #define INT16_MIN (-32767-1) 63 #endif 64 #ifndef INT32_MIN 65 #define INT32_MIN (-2147483647-1) 66 #endif 67 #ifndef INT8_MAX 68 #define INT8_MAX (127) 69 #endif 70 #ifndef INT16_MAX 71 #define INT16_MAX (32767) 72 #endif 73 #ifndef INT32_MAX 74 #define INT32_MAX (2147483647) 75 #endif 76 #ifndef UINT8_MAX 77 #define UINT8_MAX (255U) 78 #endif 79 #ifndef UINT16_MAX 80 #define UINT16_MAX (65535U) 81 #endif 82 #ifndef UINT32_MAX 83 #define UINT32_MAX (4294967295U) 84 #endif 85 86 #endif /* ! C99 */ 87 88 #endif /* ! FLEXINT_H */ 89 90 #ifdef __cplusplus 91 92 /* The "const" storage-class-modifier is valid. */ 93 #define YY_USE_CONST 94 95 #else /* ! __cplusplus */ 96 97 /* C99 requires __STDC__ to be defined as 1. */ 98 #if defined (__STDC__) 99 100 #define YY_USE_CONST 101 102 #endif /* defined (__STDC__) */ 103 #endif /* ! __cplusplus */ 104 105 #ifdef YY_USE_CONST 106 #define yyconst const 107 #else 108 #define yyconst 109 #endif 110 111 /* Returned upon end-of-file. */ 112 #define YY_NULL 0 113 114 /* Promotes a possibly negative, possibly signed char to an unsigned 115 * integer for use as an array index. If the signed char is negative, 116 * we want to instead treat it as an 8-bit unsigned char, hence the 117 * double cast. 118 */ 119 #define YY_SC_TO_UI(c) ((unsigned int) (unsigned char) c) 120 121 /* Enter a start condition. This macro really ought to take a parameter, 122 * but we do it the disgusting crufty way forced on us by the ()-less 123 * definition of BEGIN. 124 */ 125 #define BEGIN (yy_start) = 1 + 2 * 126 127 /* Translate the current start state into a value that can be later handed 128 * to BEGIN to return to the state. The YYSTATE alias is for lex 129 * compatibility. 130 */ 131 #define YY_START (((yy_start) - 1) / 2) 132 #define YYSTATE YY_START 133 134 /* Action number for EOF rule of a given start state. */ 135 #define YY_STATE_EOF(state) (YY_END_OF_BUFFER + state + 1) 136 137 /* Special action meaning "start processing a new file". */ 138 #define YY_NEW_FILE yyrestart(yyin ) 139 140 #define YY_END_OF_BUFFER_CHAR 0 141 142 /* Size of default input buffer. */ 143 #ifndef YY_BUF_SIZE 144 #define YY_BUF_SIZE 16384 145 #endif 146 147 /* The state buf must be large enough to hold one state per character in the main buffer. 148 */ 149 #define YY_STATE_BUF_SIZE ((YY_BUF_SIZE + 2) * sizeof(yy_state_type)) 150 151 #ifndef YY_TYPEDEF_YY_BUFFER_STATE 152 #define YY_TYPEDEF_YY_BUFFER_STATE 153 typedef struct yy_buffer_state *YY_BUFFER_STATE; 154 #endif 155 156 #ifndef YY_TYPEDEF_YY_SIZE_T 157 #define YY_TYPEDEF_YY_SIZE_T 158 typedef size_t yy_size_t; 159 #endif 160 161 extern yy_size_t yyleng; 162 163 extern FILE *yyin, *yyout; 164 165 #define EOB_ACT_CONTINUE_SCAN 0 166 #define EOB_ACT_END_OF_FILE 1 167 #define EOB_ACT_LAST_MATCH 2 168 169 #define YY_LESS_LINENO(n) 170 171 /* Return all but the first "n" matched characters back to the input stream. */ 172 #define yyless(n) \ 173 do \ 174 { \ 175 /* Undo effects of setting up yytext. */ \ 176 int yyless_macro_arg = (n); \ 177 YY_LESS_LINENO(yyless_macro_arg);\ 178 *yy_cp = (yy_hold_char); \ 179 YY_RESTORE_YY_MORE_OFFSET \ 180 (yy_c_buf_p) = yy_cp = yy_bp + yyless_macro_arg - YY_MORE_ADJ; \ 181 YY_DO_BEFORE_ACTION; /* set up yytext again */ \ 182 } \ 183 while ( 0 ) 184 185 #define unput(c) yyunput( c, (yytext_ptr) ) 186 187 #ifndef YY_STRUCT_YY_BUFFER_STATE 188 #define YY_STRUCT_YY_BUFFER_STATE 189 struct yy_buffer_state 190 { 191 FILE *yy_input_file; 192 193 char *yy_ch_buf; /* input buffer */ 194 char *yy_buf_pos; /* current position in input buffer */ 195 196 /* Size of input buffer in bytes, not including room for EOB 197 * characters. 198 */ 199 yy_size_t yy_buf_size; 200 201 /* Number of characters read into yy_ch_buf, not including EOB 202 * characters. 203 */ 204 yy_size_t yy_n_chars; 205 206 /* Whether we "own" the buffer - i.e., we know we created it, 207 * and can realloc() it to grow it, and should free() it to 208 * delete it. 209 */ 210 int yy_is_our_buffer; 211 212 /* Whether this is an "interactive" input source; if so, and 213 * if we're using stdio for input, then we want to use getc() 214 * instead of fread(), to make sure we stop fetching input after 215 * each newline. 216 */ 217 int yy_is_interactive; 218 219 /* Whether we're considered to be at the beginning of a line. 220 * If so, '^' rules will be active on the next match, otherwise 221 * not. 222 */ 223 int yy_at_bol; 224 225 int yy_bs_lineno; /**< The line count. */ 226 int yy_bs_column; /**< The column count. */ 227 228 /* Whether to try to fill the input buffer when we reach the 229 * end of it. 230 */ 231 int yy_fill_buffer; 232 233 int yy_buffer_status; 234 235 #define YY_BUFFER_NEW 0 236 #define YY_BUFFER_NORMAL 1 237 /* When an EOF's been seen but there's still some text to process 238 * then we mark the buffer as YY_EOF_PENDING, to indicate that we 239 * shouldn't try reading from the input source any more. We might 240 * still have a bunch of tokens to match, though, because of 241 * possible backing-up. 242 * 243 * When we actually see the EOF, we change the status to "new" 244 * (via yyrestart()), so that the user can continue scanning by 245 * just pointing yyin at a new input file. 246 */ 247 #define YY_BUFFER_EOF_PENDING 2 248 249 }; 250 #endif /* !YY_STRUCT_YY_BUFFER_STATE */ 251 252 /* Stack of input buffers. */ 253 static size_t yy_buffer_stack_top = 0; /**< index of top of stack. */ 254 static size_t yy_buffer_stack_max = 0; /**< capacity of stack. */ 255 static YY_BUFFER_STATE * yy_buffer_stack = 0; /**< Stack as an array. */ 256 257 /* We provide macros for accessing buffer states in case in the 258 * future we want to put the buffer states in a more general 259 * "scanner state". 260 * 261 * Returns the top of the stack, or NULL. 262 */ 263 #define YY_CURRENT_BUFFER ( (yy_buffer_stack) \ 264 ? (yy_buffer_stack)[(yy_buffer_stack_top)] \ 265 : NULL) 266 267 /* Same as previous macro, but useful when we know that the buffer stack is not 268 * NULL or when we need an lvalue. For internal use only. 269 */ 270 #define YY_CURRENT_BUFFER_LVALUE (yy_buffer_stack)[(yy_buffer_stack_top)] 271 272 /* yy_hold_char holds the character lost when yytext is formed. */ 273 static char yy_hold_char; 274 static yy_size_t yy_n_chars; /* number of characters read into yy_ch_buf */ 275 yy_size_t yyleng; 276 277 /* Points to current character in buffer. */ 278 static char *yy_c_buf_p = (char *) 0; 279 static int yy_init = 0; /* whether we need to initialize */ 280 static int yy_start = 0; /* start state number */ 281 282 /* Flag which is used to allow yywrap()'s to do buffer switches 283 * instead of setting up a fresh yyin. A bit of a hack ... 284 */ 285 static int yy_did_buffer_switch_on_eof; 286 287 void yyrestart (FILE *input_file ); 288 void yy_switch_to_buffer (YY_BUFFER_STATE new_buffer ); 289 YY_BUFFER_STATE yy_create_buffer (FILE *file,int size ); 290 void yy_delete_buffer (YY_BUFFER_STATE b ); 291 void yy_flush_buffer (YY_BUFFER_STATE b ); 292 void yypush_buffer_state (YY_BUFFER_STATE new_buffer ); 293 void yypop_buffer_state (void ); 294 295 static void yyensure_buffer_stack (void ); 296 static void yy_load_buffer_state (void ); 297 static void yy_init_buffer (YY_BUFFER_STATE b,FILE *file ); 298 299 #define YY_FLUSH_BUFFER yy_flush_buffer(YY_CURRENT_BUFFER ) 300 301 YY_BUFFER_STATE yy_scan_buffer (char *base,yy_size_t size ); 302 YY_BUFFER_STATE yy_scan_string (yyconst char *yy_str ); 303 YY_BUFFER_STATE yy_scan_bytes (yyconst char *bytes,yy_size_t len ); 304 305 void *yyalloc (yy_size_t ); 306 void *yyrealloc (void *,yy_size_t ); 307 void yyfree (void * ); 308 309 #define yy_new_buffer yy_create_buffer 310 311 #define yy_set_interactive(is_interactive) \ 312 { \ 313 if ( ! YY_CURRENT_BUFFER ){ \ 314 yyensure_buffer_stack (); \ 315 YY_CURRENT_BUFFER_LVALUE = \ 316 yy_create_buffer(yyin,YY_BUF_SIZE ); \ 317 } \ 318 YY_CURRENT_BUFFER_LVALUE->yy_is_interactive = is_interactive; \ 319 } 320 321 #define yy_set_bol(at_bol) \ 322 { \ 323 if ( ! YY_CURRENT_BUFFER ){\ 324 yyensure_buffer_stack (); \ 325 YY_CURRENT_BUFFER_LVALUE = \ 326 yy_create_buffer(yyin,YY_BUF_SIZE ); \ 327 } \ 328 YY_CURRENT_BUFFER_LVALUE->yy_at_bol = at_bol; \ 329 } 330 331 #define YY_AT_BOL() (YY_CURRENT_BUFFER_LVALUE->yy_at_bol) 332 333 /* Begin user sect3 */ 334 335 typedef unsigned char YY_CHAR; 336 337 FILE *yyin = (FILE *) 0, *yyout = (FILE *) 0; 338 339 typedef int yy_state_type; 340 341 extern int yylineno; 342 343 int yylineno = 1; 344 345 extern char *yytext; 346 #define yytext_ptr yytext 347 348 static yy_state_type yy_get_previous_state (void ); 349 static yy_state_type yy_try_NUL_trans (yy_state_type current_state ); 350 static int yy_get_next_buffer (void ); 351 static void yy_fatal_error (yyconst char msg[] ); 352 353 /* Done after the current pattern has been matched and before the 354 * corresponding action - sets up yytext. 355 */ 356 #define YY_DO_BEFORE_ACTION \ 357 (yytext_ptr) = yy_bp; \ 358 yyleng = (size_t) (yy_cp - yy_bp); \ 359 (yy_hold_char) = *yy_cp; \ 360 *yy_cp = '\0'; \ 361 (yy_c_buf_p) = yy_cp; 362 363 #define YY_NUM_RULES 19 364 #define YY_END_OF_BUFFER 20 365 /* This struct is not used in this scanner, 366 but its presence is necessary. */ 367 struct yy_trans_info 368 { 369 flex_int32_t yy_verify; 370 flex_int32_t yy_nxt; 371 }; 372 static yyconst flex_int16_t yy_accept[39] = 373 { 0, 374 0, 0, 20, 18, 1, 2, 7, 6, 7, 18, 375 16, 16, 2, 7, 7, 7, 16, 17, 18, 18, 376 11, 6, 5, 6, 14, 16, 0, 12, 8, 10, 377 9, 13, 16, 17, 3, 15, 4, 0 378 } ; 379 380 static yyconst flex_int32_t yy_ec[256] = 381 { 0, 382 1, 1, 1, 1, 1, 1, 1, 1, 2, 3, 383 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 384 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 385 1, 2, 4, 1, 5, 1, 6, 7, 1, 6, 386 6, 6, 6, 6, 6, 1, 6, 8, 9, 9, 387 9, 9, 9, 9, 9, 9, 9, 1, 10, 11, 388 12, 13, 1, 1, 14, 14, 14, 14, 14, 14, 389 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 390 15, 15, 15, 15, 15, 15, 15, 16, 15, 15, 391 1, 17, 1, 6, 1, 1, 15, 15, 15, 15, 392 393 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 394 15, 15, 15, 15, 15, 15, 15, 15, 15, 16, 395 15, 15, 1, 18, 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 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 403 404 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 405 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 406 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 407 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 408 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 409 1, 1, 1, 1, 1 410 } ; 411 412 static yyconst flex_int32_t yy_meta[19] = 413 { 0, 414 1, 1, 1, 1, 1, 1, 1, 2, 2, 1, 415 1, 1, 1, 2, 3, 2, 1, 1 416 } ; 417 418 static yyconst flex_int16_t yy_base[43] = 419 { 0, 420 0, 0, 39, 49, 49, 49, 26, 16, 49, 30, 421 20, 19, 49, 9, 22, 10, 9, 0, 29, 13, 422 49, 23, 49, 24, 49, 0, 0, 49, 49, 49, 423 49, 49, 13, 0, 49, 49, 49, 49, 41, 28, 424 43, 45 425 } ; 426 427 static yyconst flex_int16_t yy_def[43] = 428 { 0, 429 38, 1, 38, 38, 38, 38, 38, 39, 38, 38, 430 40, 40, 38, 38, 38, 38, 41, 42, 38, 38, 431 38, 39, 38, 39, 38, 12, 12, 38, 38, 38, 432 38, 38, 41, 42, 38, 38, 38, 0, 38, 38, 433 38, 38 434 } ; 435 436 static yyconst flex_int16_t yy_nxt[68] = 437 { 0, 438 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 439 14, 15, 16, 17, 18, 18, 19, 20, 23, 28, 440 29, 31, 32, 34, 34, 23, 37, 34, 34, 26, 441 36, 35, 24, 30, 38, 27, 25, 21, 38, 24, 442 24, 22, 22, 22, 33, 33, 34, 34, 3, 38, 443 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 444 38, 38, 38, 38, 38, 38, 38 445 } ; 446 447 static yyconst flex_int16_t yy_chk[68] = 448 { 0, 449 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 450 1, 1, 1, 1, 1, 1, 1, 1, 8, 14, 451 14, 16, 16, 17, 17, 22, 24, 33, 33, 40, 452 20, 19, 8, 15, 12, 11, 10, 7, 3, 22, 453 24, 39, 39, 39, 41, 41, 42, 42, 38, 38, 454 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 455 38, 38, 38, 38, 38, 38, 38 456 } ; 457 458 static yy_state_type yy_last_accepting_state; 459 static char *yy_last_accepting_cpos; 460 461 extern int yy_flex_debug; 462 int yy_flex_debug = 0; 463 464 /* The intent behind this definition is that it'll catch 465 * any uses of REJECT which flex missed. 466 */ 467 #define REJECT reject_used_but_not_detected 468 #define yymore() yymore_used_but_not_detected 469 #define YY_MORE_ADJ 0 470 #define YY_RESTORE_YY_MORE_OFFSET 471 char *yytext; 472 #line 1 "calclex.l" 473 /* Lexical analyzer for calc program. 474 475 Copyright 2000, 2001, 2002 Free Software Foundation, Inc. 476 477 This file is part of the GNU MP Library. 478 479 This program is free software; you can redistribute it and/or modify it under 480 the terms of the GNU General Public License as published by the Free Software 481 Foundation; either version 3 of the License, or (at your option) any later 482 version. 483 484 This program is distributed in the hope that it will be useful, but WITHOUT ANY 485 WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A 486 PARTICULAR PURPOSE. See the GNU General Public License for more details. 487 488 You should have received a copy of the GNU General Public License along with 489 this program. If not, see http://www.gnu.org/licenses/. */ 490 #line 20 "calclex.l" 491 #include <string.h> 492 #include "calc-common.h" 493 494 495 #if WITH_READLINE 496 /* Let GNU flex use readline. See the calcread.c redefined input() for a 497 way that might work for a standard lex too. */ 498 #define YY_INPUT(buf,result,max_size) \ 499 result = calc_input (buf, max_size); 500 #endif 501 502 503 /* Non-zero when reading the second or subsequent line of an expression, 504 used to give a different prompt when using readline. */ 505 int calc_more_input = 0; 506 507 508 const struct calc_keywords_t calc_keywords[] = { 509 { "abs", ABS }, 510 { "bin", BIN }, 511 { "decimal", DECIMAL }, 512 { "fib", FIB }, 513 { "hex", HEX }, 514 { "help", HELP }, 515 { "gcd", GCD }, 516 { "kron", KRON }, 517 { "lcm", LCM }, 518 { "lucnum", LUCNUM }, 519 { "nextprime", NEXTPRIME }, 520 { "powm", POWM }, 521 { "quit", QUIT }, 522 { "root", ROOT }, 523 { "sqrt", SQRT }, 524 { NULL } 525 }; 526 #line 527 "calclex.c" 527 528 #define INITIAL 0 529 530 #ifndef YY_NO_UNISTD_H 531 /* Special case for "unistd.h", since it is non-ANSI. We include it way 532 * down here because we want the user's section 1 to have been scanned first. 533 * The user has a chance to override it with an option. 534 */ 535 #include <unistd.h> 536 #endif 537 538 #ifndef YY_EXTRA_TYPE 539 #define YY_EXTRA_TYPE void * 540 #endif 541 542 static int yy_init_globals (void ); 543 544 /* Accessor methods to globals. 545 These are made visible to non-reentrant scanners for convenience. */ 546 547 int yylex_destroy (void ); 548 549 int yyget_debug (void ); 550 551 void yyset_debug (int debug_flag ); 552 553 YY_EXTRA_TYPE yyget_extra (void ); 554 555 void yyset_extra (YY_EXTRA_TYPE user_defined ); 556 557 FILE *yyget_in (void ); 558 559 void yyset_in (FILE * in_str ); 560 561 FILE *yyget_out (void ); 562 563 void yyset_out (FILE * out_str ); 564 565 yy_size_t yyget_leng (void ); 566 567 char *yyget_text (void ); 568 569 int yyget_lineno (void ); 570 571 void yyset_lineno (int line_number ); 572 573 /* Macros after this point can all be overridden by user definitions in 574 * section 1. 575 */ 576 577 #ifndef YY_SKIP_YYWRAP 578 #ifdef __cplusplus 579 extern "C" int yywrap (void ); 580 #else 581 extern int yywrap (void ); 582 #endif 583 #endif 584 585 static void yyunput (int c,char *buf_ptr ); 586 587 #ifndef yytext_ptr 588 static void yy_flex_strncpy (char *,yyconst char *,int ); 589 #endif 590 591 #ifdef YY_NEED_STRLEN 592 static int yy_flex_strlen (yyconst char * ); 593 #endif 594 595 #ifndef YY_NO_INPUT 596 597 #ifdef __cplusplus 598 static int yyinput (void ); 599 #else 600 static int input (void ); 601 #endif 602 603 #endif 604 605 /* Amount of stuff to slurp up with each read. */ 606 #ifndef YY_READ_BUF_SIZE 607 #define YY_READ_BUF_SIZE 8192 608 #endif 609 610 /* Copy whatever the last rule matched to the standard output. */ 611 #ifndef ECHO 612 /* This used to be an fputs(), but since the string might contain NUL's, 613 * we now use fwrite(). 614 */ 615 #define ECHO do { if (fwrite( yytext, yyleng, 1, yyout )) {} } while (0) 616 #endif 617 618 /* Gets input and stuffs it into "buf". number of characters read, or YY_NULL, 619 * is returned in "result". 620 */ 621 #ifndef YY_INPUT 622 #define YY_INPUT(buf,result,max_size) \ 623 if ( YY_CURRENT_BUFFER_LVALUE->yy_is_interactive ) \ 624 { \ 625 int c = '*'; \ 626 size_t n; \ 627 for ( n = 0; n < max_size && \ 628 (c = getc( yyin )) != EOF && c != '\n'; ++n ) \ 629 buf[n] = (char) c; \ 630 if ( c == '\n' ) \ 631 buf[n++] = (char) c; \ 632 if ( c == EOF && ferror( yyin ) ) \ 633 YY_FATAL_ERROR( "input in flex scanner failed" ); \ 634 result = n; \ 635 } \ 636 else \ 637 { \ 638 errno=0; \ 639 while ( (result = fread(buf, 1, max_size, yyin))==0 && ferror(yyin)) \ 640 { \ 641 if( errno != EINTR) \ 642 { \ 643 YY_FATAL_ERROR( "input in flex scanner failed" ); \ 644 break; \ 645 } \ 646 errno=0; \ 647 clearerr(yyin); \ 648 } \ 649 }\ 650 \ 651 652 #endif 653 654 /* No semi-colon after return; correct usage is to write "yyterminate();" - 655 * we don't want an extra ';' after the "return" because that will cause 656 * some compilers to complain about unreachable statements. 657 */ 658 #ifndef yyterminate 659 #define yyterminate() return YY_NULL 660 #endif 661 662 /* Number of entries by which start-condition stack grows. */ 663 #ifndef YY_START_STACK_INCR 664 #define YY_START_STACK_INCR 25 665 #endif 666 667 /* Report a fatal error. */ 668 #ifndef YY_FATAL_ERROR 669 #define YY_FATAL_ERROR(msg) yy_fatal_error( msg ) 670 #endif 671 672 /* end tables serialization structures and prototypes */ 673 674 /* Default declaration of generated scanner - a define so the user can 675 * easily add parameters. 676 */ 677 #ifndef YY_DECL 678 #define YY_DECL_IS_OURS 1 679 680 extern int yylex (void); 681 682 #define YY_DECL int yylex (void) 683 #endif /* !YY_DECL */ 684 685 /* Code executed at the beginning of each rule, after yytext and yyleng 686 * have been set up. 687 */ 688 #ifndef YY_USER_ACTION 689 #define YY_USER_ACTION 690 #endif 691 692 /* Code executed at the end of each rule. */ 693 #ifndef YY_BREAK 694 #define YY_BREAK break; 695 #endif 696 697 #define YY_RULE_SETUP \ 698 YY_USER_ACTION 699 700 /** The main scanner function which does all the work. 701 */ 702 YY_DECL 703 { 704 register yy_state_type yy_current_state; 705 register char *yy_cp, *yy_bp; 706 register int yy_act; 707 708 #line 57 "calclex.l" 709 710 711 #line 712 "calclex.c" 712 713 if ( !(yy_init) ) 714 { 715 (yy_init) = 1; 716 717 #ifdef YY_USER_INIT 718 YY_USER_INIT; 719 #endif 720 721 if ( ! (yy_start) ) 722 (yy_start) = 1; /* first start state */ 723 724 if ( ! yyin ) 725 yyin = stdin; 726 727 if ( ! yyout ) 728 yyout = stdout; 729 730 if ( ! YY_CURRENT_BUFFER ) { 731 yyensure_buffer_stack (); 732 YY_CURRENT_BUFFER_LVALUE = 733 yy_create_buffer(yyin,YY_BUF_SIZE ); 734 } 735 736 yy_load_buffer_state( ); 737 } 738 739 while ( 1 ) /* loops until end-of-file is reached */ 740 { 741 yy_cp = (yy_c_buf_p); 742 743 /* Support of yytext. */ 744 *yy_cp = (yy_hold_char); 745 746 /* yy_bp points to the position in yy_ch_buf of the start of 747 * the current run. 748 */ 749 yy_bp = yy_cp; 750 751 yy_current_state = (yy_start); 752 yy_match: 753 do 754 { 755 register YY_CHAR yy_c = yy_ec[YY_SC_TO_UI(*yy_cp)]; 756 if ( yy_accept[yy_current_state] ) 757 { 758 (yy_last_accepting_state) = yy_current_state; 759 (yy_last_accepting_cpos) = yy_cp; 760 } 761 while ( yy_chk[yy_base[yy_current_state] + yy_c] != yy_current_state ) 762 { 763 yy_current_state = (int) yy_def[yy_current_state]; 764 if ( yy_current_state >= 39 ) 765 yy_c = yy_meta[(unsigned int) yy_c]; 766 } 767 yy_current_state = yy_nxt[yy_base[yy_current_state] + (unsigned int) yy_c]; 768 ++yy_cp; 769 } 770 while ( yy_base[yy_current_state] != 49 ); 771 772 yy_find_action: 773 yy_act = yy_accept[yy_current_state]; 774 if ( yy_act == 0 ) 775 { /* have to back up */ 776 yy_cp = (yy_last_accepting_cpos); 777 yy_current_state = (yy_last_accepting_state); 778 yy_act = yy_accept[yy_current_state]; 779 } 780 781 YY_DO_BEFORE_ACTION; 782 783 do_action: /* This label is used only to access EOF actions. */ 784 785 switch ( yy_act ) 786 { /* beginning of action switch */ 787 case 0: /* must back up */ 788 /* undo the effects of YY_DO_BEFORE_ACTION */ 789 *yy_cp = (yy_hold_char); 790 yy_cp = (yy_last_accepting_cpos); 791 yy_current_state = (yy_last_accepting_state); 792 goto yy_find_action; 793 794 case 1: 795 YY_RULE_SETUP 796 #line 59 "calclex.l" 797 { /* white space is skipped */ } 798 YY_BREAK 799 case 2: 800 /* rule 2 can match eol */ 801 YY_RULE_SETUP 802 #line 61 "calclex.l" 803 { /* semicolon or newline separates statements */ 804 calc_more_input = 0; 805 return EOS; } 806 YY_BREAK 807 case 3: 808 /* rule 3 can match eol */ 809 YY_RULE_SETUP 810 #line 64 "calclex.l" 811 { /* escaped newlines are skipped */ } 812 YY_BREAK 813 case 4: 814 /* rule 4 can match eol */ 815 YY_RULE_SETUP 816 #line 67 "calclex.l" 817 { 818 /* comment through to escaped newline is skipped */ } 819 YY_BREAK 820 case 5: 821 /* rule 5 can match eol */ 822 YY_RULE_SETUP 823 #line 69 "calclex.l" 824 { /* comment through to newline is a separator */ 825 calc_more_input = 0; 826 return EOS; } 827 YY_BREAK 828 case 6: 829 YY_RULE_SETUP 830 #line 72 "calclex.l" 831 { /* comment through to EOF skipped */ } 832 YY_BREAK 833 case 7: 834 YY_RULE_SETUP 835 #line 75 "calclex.l" 836 { return yytext[0]; } 837 YY_BREAK 838 case 8: 839 YY_RULE_SETUP 840 #line 76 "calclex.l" 841 { return LE; } 842 YY_BREAK 843 case 9: 844 YY_RULE_SETUP 845 #line 77 "calclex.l" 846 { return GE; } 847 YY_BREAK 848 case 10: 849 YY_RULE_SETUP 850 #line 78 "calclex.l" 851 { return EQ; } 852 YY_BREAK 853 case 11: 854 YY_RULE_SETUP 855 #line 79 "calclex.l" 856 { return NE; } 857 YY_BREAK 858 case 12: 859 YY_RULE_SETUP 860 #line 80 "calclex.l" 861 { return LSHIFT; } 862 YY_BREAK 863 case 13: 864 YY_RULE_SETUP 865 #line 81 "calclex.l" 866 { return RSHIFT; } 867 YY_BREAK 868 case 14: 869 YY_RULE_SETUP 870 #line 82 "calclex.l" 871 { return LAND; } 872 YY_BREAK 873 case 15: 874 YY_RULE_SETUP 875 #line 83 "calclex.l" 876 { return LOR; } 877 YY_BREAK 878 case 16: 879 YY_RULE_SETUP 880 #line 85 "calclex.l" 881 { 882 yylval.str = yytext; 883 return NUMBER; } 884 YY_BREAK 885 case 17: 886 YY_RULE_SETUP 887 #line 89 "calclex.l" 888 { 889 int i; 890 891 for (i = 0; calc_keywords[i].name != NULL; i++) 892 if (strcmp (yytext, calc_keywords[i].name) == 0) 893 return calc_keywords[i].value; 894 895 if (yytext[0] >= 'a' && yytext[0] <= 'z' && yytext[1] == '\0') 896 { 897 yylval.var = yytext[0] - 'a'; 898 return VARIABLE; 899 } 900 901 return BAD; 902 } 903 YY_BREAK 904 case 18: 905 YY_RULE_SETUP 906 #line 105 "calclex.l" 907 { return BAD; } 908 YY_BREAK 909 case 19: 910 YY_RULE_SETUP 911 #line 107 "calclex.l" 912 ECHO; 913 YY_BREAK 914 #line 915 "calclex.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 yy_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_LVALUE; 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 yy_size_t 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 if ((yy_size_t) ((yy_n_chars) + number_to_move) > YY_CURRENT_BUFFER_LVALUE->yy_buf_size) { 1170 /* Extend the array by 50%, plus the number we really need. */ 1171 yy_size_t new_size = (yy_n_chars) + number_to_move + ((yy_n_chars) >> 1); 1172 YY_CURRENT_BUFFER_LVALUE->yy_ch_buf = (char *) yyrealloc((void *) YY_CURRENT_BUFFER_LVALUE->yy_ch_buf,new_size ); 1173 if ( ! YY_CURRENT_BUFFER_LVALUE->yy_ch_buf ) 1174 YY_FATAL_ERROR( "out of dynamic memory in yy_get_next_buffer()" ); 1175 } 1176 1177 (yy_n_chars) += number_to_move; 1178 YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[(yy_n_chars)] = YY_END_OF_BUFFER_CHAR; 1179 YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[(yy_n_chars) + 1] = YY_END_OF_BUFFER_CHAR; 1180 1181 (yytext_ptr) = &YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[0]; 1182 1183 return ret_val; 1184 } 1185 1186 /* yy_get_previous_state - get the state just before the EOB char was reached */ 1187 1188 static yy_state_type yy_get_previous_state (void) 1189 { 1190 register yy_state_type yy_current_state; 1191 register char *yy_cp; 1192 1193 yy_current_state = (yy_start); 1194 1195 for ( yy_cp = (yytext_ptr) + YY_MORE_ADJ; yy_cp < (yy_c_buf_p); ++yy_cp ) 1196 { 1197 register YY_CHAR yy_c = (*yy_cp ? yy_ec[YY_SC_TO_UI(*yy_cp)] : 1); 1198 if ( yy_accept[yy_current_state] ) 1199 { 1200 (yy_last_accepting_state) = yy_current_state; 1201 (yy_last_accepting_cpos) = yy_cp; 1202 } 1203 while ( yy_chk[yy_base[yy_current_state] + yy_c] != yy_current_state ) 1204 { 1205 yy_current_state = (int) yy_def[yy_current_state]; 1206 if ( yy_current_state >= 39 ) 1207 yy_c = yy_meta[(unsigned int) yy_c]; 1208 } 1209 yy_current_state = yy_nxt[yy_base[yy_current_state] + (unsigned int) yy_c]; 1210 } 1211 1212 return yy_current_state; 1213 } 1214 1215 /* yy_try_NUL_trans - try to make a transition on the NUL character 1216 * 1217 * synopsis 1218 * next_state = yy_try_NUL_trans( current_state ); 1219 */ 1220 static yy_state_type yy_try_NUL_trans (yy_state_type yy_current_state ) 1221 { 1222 register int yy_is_jam; 1223 register char *yy_cp = (yy_c_buf_p); 1224 1225 register YY_CHAR yy_c = 1; 1226 if ( yy_accept[yy_current_state] ) 1227 { 1228 (yy_last_accepting_state) = yy_current_state; 1229 (yy_last_accepting_cpos) = yy_cp; 1230 } 1231 while ( yy_chk[yy_base[yy_current_state] + yy_c] != yy_current_state ) 1232 { 1233 yy_current_state = (int) yy_def[yy_current_state]; 1234 if ( yy_current_state >= 39 ) 1235 yy_c = yy_meta[(unsigned int) yy_c]; 1236 } 1237 yy_current_state = yy_nxt[yy_base[yy_current_state] + (unsigned int) yy_c]; 1238 yy_is_jam = (yy_current_state == 38); 1239 1240 return yy_is_jam ? 0 : yy_current_state; 1241 } 1242 1243 static void yyunput (int c, register char * yy_bp ) 1244 { 1245 register char *yy_cp; 1246 1247 yy_cp = (yy_c_buf_p); 1248 1249 /* undo effects of setting up yytext */ 1250 *yy_cp = (yy_hold_char); 1251 1252 if ( yy_cp < YY_CURRENT_BUFFER_LVALUE->yy_ch_buf + 2 ) 1253 { /* need to shift things up to make room */ 1254 /* +2 for EOB chars. */ 1255 register yy_size_t number_to_move = (yy_n_chars) + 2; 1256 register char *dest = &YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[ 1257 YY_CURRENT_BUFFER_LVALUE->yy_buf_size + 2]; 1258 register char *source = 1259 &YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[number_to_move]; 1260 1261 while ( source > YY_CURRENT_BUFFER_LVALUE->yy_ch_buf ) 1262 *--dest = *--source; 1263 1264 yy_cp += (int) (dest - source); 1265 yy_bp += (int) (dest - source); 1266 YY_CURRENT_BUFFER_LVALUE->yy_n_chars = 1267 (yy_n_chars) = YY_CURRENT_BUFFER_LVALUE->yy_buf_size; 1268 1269 if ( yy_cp < YY_CURRENT_BUFFER_LVALUE->yy_ch_buf + 2 ) 1270 YY_FATAL_ERROR( "flex scanner push-back overflow" ); 1271 } 1272 1273 *--yy_cp = (char) c; 1274 1275 (yytext_ptr) = yy_bp; 1276 (yy_hold_char) = *yy_cp; 1277 (yy_c_buf_p) = yy_cp; 1278 } 1279 1280 #ifndef YY_NO_INPUT 1281 #ifdef __cplusplus 1282 static int yyinput (void) 1283 #else 1284 static int input (void) 1285 #endif 1286 1287 { 1288 int c; 1289 1290 *(yy_c_buf_p) = (yy_hold_char); 1291 1292 if ( *(yy_c_buf_p) == YY_END_OF_BUFFER_CHAR ) 1293 { 1294 /* yy_c_buf_p now points to the character we want to return. 1295 * If this occurs *before* the EOB characters, then it's a 1296 * valid NUL; if not, then we've hit the end of the buffer. 1297 */ 1298 if ( (yy_c_buf_p) < &YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[(yy_n_chars)] ) 1299 /* This was really a NUL. */ 1300 *(yy_c_buf_p) = '\0'; 1301 1302 else 1303 { /* need more input */ 1304 yy_size_t offset = (yy_c_buf_p) - (yytext_ptr); 1305 ++(yy_c_buf_p); 1306 1307 switch ( yy_get_next_buffer( ) ) 1308 { 1309 case EOB_ACT_LAST_MATCH: 1310 /* This happens because yy_g_n_b() 1311 * sees that we've accumulated a 1312 * token and flags that we need to 1313 * try matching the token before 1314 * proceeding. But for input(), 1315 * there's no matching to consider. 1316 * So convert the EOB_ACT_LAST_MATCH 1317 * to EOB_ACT_END_OF_FILE. 1318 */ 1319 1320 /* Reset buffer status. */ 1321 yyrestart(yyin ); 1322 1323 /*FALLTHROUGH*/ 1324 1325 case EOB_ACT_END_OF_FILE: 1326 { 1327 if ( yywrap( ) ) 1328 return EOF; 1329 1330 if ( ! (yy_did_buffer_switch_on_eof) ) 1331 YY_NEW_FILE; 1332 #ifdef __cplusplus 1333 return yyinput(); 1334 #else 1335 return input(); 1336 #endif 1337 } 1338 1339 case EOB_ACT_CONTINUE_SCAN: 1340 (yy_c_buf_p) = (yytext_ptr) + offset; 1341 break; 1342 } 1343 } 1344 } 1345 1346 c = *(unsigned char *) (yy_c_buf_p); /* cast for 8-bit char's */ 1347 *(yy_c_buf_p) = '\0'; /* preserve yytext */ 1348 (yy_hold_char) = *++(yy_c_buf_p); 1349 1350 return c; 1351 } 1352 #endif /* ifndef YY_NO_INPUT */ 1353 1354 /** Immediately switch to a different input stream. 1355 * @param input_file A readable stream. 1356 * 1357 * @note This function does not reset the start condition to @c INITIAL . 1358 */ 1359 void yyrestart (FILE * input_file ) 1360 { 1361 1362 if ( ! YY_CURRENT_BUFFER ){ 1363 yyensure_buffer_stack (); 1364 YY_CURRENT_BUFFER_LVALUE = 1365 yy_create_buffer(yyin,YY_BUF_SIZE ); 1366 } 1367 1368 yy_init_buffer(YY_CURRENT_BUFFER,input_file ); 1369 yy_load_buffer_state( ); 1370 } 1371 1372 /** Switch to a different input buffer. 1373 * @param new_buffer The new input buffer. 1374 * 1375 */ 1376 void yy_switch_to_buffer (YY_BUFFER_STATE new_buffer ) 1377 { 1378 1379 /* TODO. We should be able to replace this entire function body 1380 * with 1381 * yypop_buffer_state(); 1382 * yypush_buffer_state(new_buffer); 1383 */ 1384 yyensure_buffer_stack (); 1385 if ( YY_CURRENT_BUFFER == new_buffer ) 1386 return; 1387 1388 if ( YY_CURRENT_BUFFER ) 1389 { 1390 /* Flush out information for old buffer. */ 1391 *(yy_c_buf_p) = (yy_hold_char); 1392 YY_CURRENT_BUFFER_LVALUE->yy_buf_pos = (yy_c_buf_p); 1393 YY_CURRENT_BUFFER_LVALUE->yy_n_chars = (yy_n_chars); 1394 } 1395 1396 YY_CURRENT_BUFFER_LVALUE = new_buffer; 1397 yy_load_buffer_state( ); 1398 1399 /* We don't actually know whether we did this switch during 1400 * EOF (yywrap()) processing, but the only time this flag 1401 * is looked at is after yywrap() is called, so it's safe 1402 * to go ahead and always set it. 1403 */ 1404 (yy_did_buffer_switch_on_eof) = 1; 1405 } 1406 1407 static void yy_load_buffer_state (void) 1408 { 1409 (yy_n_chars) = YY_CURRENT_BUFFER_LVALUE->yy_n_chars; 1410 (yytext_ptr) = (yy_c_buf_p) = YY_CURRENT_BUFFER_LVALUE->yy_buf_pos; 1411 yyin = YY_CURRENT_BUFFER_LVALUE->yy_input_file; 1412 (yy_hold_char) = *(yy_c_buf_p); 1413 } 1414 1415 /** Allocate and initialize an input buffer state. 1416 * @param file A readable stream. 1417 * @param size The character buffer size in bytes. When in doubt, use @c YY_BUF_SIZE. 1418 * 1419 * @return the allocated buffer state. 1420 */ 1421 YY_BUFFER_STATE yy_create_buffer (FILE * file, int size ) 1422 { 1423 YY_BUFFER_STATE b; 1424 1425 b = (YY_BUFFER_STATE) yyalloc(sizeof( struct yy_buffer_state ) ); 1426 if ( ! b ) 1427 YY_FATAL_ERROR( "out of dynamic memory in yy_create_buffer()" ); 1428 1429 b->yy_buf_size = size; 1430 1431 /* yy_ch_buf has to be 2 characters longer than the size given because 1432 * we need to put in 2 end-of-buffer characters. 1433 */ 1434 b->yy_ch_buf = (char *) yyalloc(b->yy_buf_size + 2 ); 1435 if ( ! b->yy_ch_buf ) 1436 YY_FATAL_ERROR( "out of dynamic memory in yy_create_buffer()" ); 1437 1438 b->yy_is_our_buffer = 1; 1439 1440 yy_init_buffer(b,file ); 1441 1442 return b; 1443 } 1444 1445 /** Destroy the buffer. 1446 * @param b a buffer created with yy_create_buffer() 1447 * 1448 */ 1449 void yy_delete_buffer (YY_BUFFER_STATE b ) 1450 { 1451 1452 if ( ! b ) 1453 return; 1454 1455 if ( b == YY_CURRENT_BUFFER ) /* Not sure if we should pop here. */ 1456 YY_CURRENT_BUFFER_LVALUE = (YY_BUFFER_STATE) 0; 1457 1458 if ( b->yy_is_our_buffer ) 1459 yyfree((void *) b->yy_ch_buf ); 1460 1461 yyfree((void *) b ); 1462 } 1463 1464 /* Initializes or reinitializes a buffer. 1465 * This function is sometimes called more than once on the same buffer, 1466 * such as during a yyrestart() or at EOF. 1467 */ 1468 static void yy_init_buffer (YY_BUFFER_STATE b, FILE * file ) 1469 1470 { 1471 int oerrno = errno; 1472 1473 yy_flush_buffer(b ); 1474 1475 b->yy_input_file = file; 1476 b->yy_fill_buffer = 1; 1477 1478 /* If b is the current buffer, then yy_init_buffer was _probably_ 1479 * called from yyrestart() or through yy_get_next_buffer. 1480 * In that case, we don't want to reset the lineno or column. 1481 */ 1482 if (b != YY_CURRENT_BUFFER){ 1483 b->yy_bs_lineno = 1; 1484 b->yy_bs_column = 0; 1485 } 1486 1487 b->yy_is_interactive = file ? (isatty( fileno(file) ) > 0) : 0; 1488 1489 errno = oerrno; 1490 } 1491 1492 /** Discard all buffered characters. On the next scan, YY_INPUT will be called. 1493 * @param b the buffer state to be flushed, usually @c YY_CURRENT_BUFFER. 1494 * 1495 */ 1496 void yy_flush_buffer (YY_BUFFER_STATE b ) 1497 { 1498 if ( ! b ) 1499 return; 1500 1501 b->yy_n_chars = 0; 1502 1503 /* We always need two end-of-buffer characters. The first causes 1504 * a transition to the end-of-buffer state. The second causes 1505 * a jam in that state. 1506 */ 1507 b->yy_ch_buf[0] = YY_END_OF_BUFFER_CHAR; 1508 b->yy_ch_buf[1] = YY_END_OF_BUFFER_CHAR; 1509 1510 b->yy_buf_pos = &b->yy_ch_buf[0]; 1511 1512 b->yy_at_bol = 1; 1513 b->yy_buffer_status = YY_BUFFER_NEW; 1514 1515 if ( b == YY_CURRENT_BUFFER ) 1516 yy_load_buffer_state( ); 1517 } 1518 1519 /** Pushes the new state onto the stack. The new state becomes 1520 * the current state. This function will allocate the stack 1521 * if necessary. 1522 * @param new_buffer The new state. 1523 * 1524 */ 1525 void yypush_buffer_state (YY_BUFFER_STATE new_buffer ) 1526 { 1527 if (new_buffer == NULL) 1528 return; 1529 1530 yyensure_buffer_stack(); 1531 1532 /* This block is copied from yy_switch_to_buffer. */ 1533 if ( YY_CURRENT_BUFFER ) 1534 { 1535 /* Flush out information for old buffer. */ 1536 *(yy_c_buf_p) = (yy_hold_char); 1537 YY_CURRENT_BUFFER_LVALUE->yy_buf_pos = (yy_c_buf_p); 1538 YY_CURRENT_BUFFER_LVALUE->yy_n_chars = (yy_n_chars); 1539 } 1540 1541 /* Only push if top exists. Otherwise, replace top. */ 1542 if (YY_CURRENT_BUFFER) 1543 (yy_buffer_stack_top)++; 1544 YY_CURRENT_BUFFER_LVALUE = new_buffer; 1545 1546 /* copied from yy_switch_to_buffer. */ 1547 yy_load_buffer_state( ); 1548 (yy_did_buffer_switch_on_eof) = 1; 1549 } 1550 1551 /** Removes and deletes the top of the stack, if present. 1552 * The next element becomes the new top. 1553 * 1554 */ 1555 void yypop_buffer_state (void) 1556 { 1557 if (!YY_CURRENT_BUFFER) 1558 return; 1559 1560 yy_delete_buffer(YY_CURRENT_BUFFER ); 1561 YY_CURRENT_BUFFER_LVALUE = NULL; 1562 if ((yy_buffer_stack_top) > 0) 1563 --(yy_buffer_stack_top); 1564 1565 if (YY_CURRENT_BUFFER) { 1566 yy_load_buffer_state( ); 1567 (yy_did_buffer_switch_on_eof) = 1; 1568 } 1569 } 1570 1571 /* Allocates the stack if it does not exist. 1572 * Guarantees space for at least one push. 1573 */ 1574 static void yyensure_buffer_stack (void) 1575 { 1576 yy_size_t num_to_alloc; 1577 1578 if (!(yy_buffer_stack)) { 1579 1580 /* First allocation is just for 2 elements, since we don't know if this 1581 * scanner will even need a stack. We use 2 instead of 1 to avoid an 1582 * immediate realloc on the next call. 1583 */ 1584 num_to_alloc = 1; 1585 (yy_buffer_stack) = (struct yy_buffer_state**)yyalloc 1586 (num_to_alloc * sizeof(struct yy_buffer_state*) 1587 ); 1588 if ( ! (yy_buffer_stack) ) 1589 YY_FATAL_ERROR( "out of dynamic memory in yyensure_buffer_stack()" ); 1590 1591 memset((yy_buffer_stack), 0, num_to_alloc * sizeof(struct yy_buffer_state*)); 1592 1593 (yy_buffer_stack_max) = num_to_alloc; 1594 (yy_buffer_stack_top) = 0; 1595 return; 1596 } 1597 1598 if ((yy_buffer_stack_top) >= ((yy_buffer_stack_max)) - 1){ 1599 1600 /* Increase the buffer to prepare for a possible push. */ 1601 int grow_size = 8 /* arbitrary grow size */; 1602 1603 num_to_alloc = (yy_buffer_stack_max) + grow_size; 1604 (yy_buffer_stack) = (struct yy_buffer_state**)yyrealloc 1605 ((yy_buffer_stack), 1606 num_to_alloc * sizeof(struct yy_buffer_state*) 1607 ); 1608 if ( ! (yy_buffer_stack) ) 1609 YY_FATAL_ERROR( "out of dynamic memory in yyensure_buffer_stack()" ); 1610 1611 /* zero only the new slots.*/ 1612 memset((yy_buffer_stack) + (yy_buffer_stack_max), 0, grow_size * sizeof(struct yy_buffer_state*)); 1613 (yy_buffer_stack_max) = num_to_alloc; 1614 } 1615 } 1616 1617 /** Setup the input buffer state to scan directly from a user-specified character buffer. 1618 * @param base the character buffer 1619 * @param size the size in bytes of the character buffer 1620 * 1621 * @return the newly allocated buffer state object. 1622 */ 1623 YY_BUFFER_STATE yy_scan_buffer (char * base, yy_size_t size ) 1624 { 1625 YY_BUFFER_STATE b; 1626 1627 if ( size < 2 || 1628 base[size-2] != YY_END_OF_BUFFER_CHAR || 1629 base[size-1] != YY_END_OF_BUFFER_CHAR ) 1630 /* They forgot to leave room for the EOB's. */ 1631 return 0; 1632 1633 b = (YY_BUFFER_STATE) yyalloc(sizeof( struct yy_buffer_state ) ); 1634 if ( ! b ) 1635 YY_FATAL_ERROR( "out of dynamic memory in yy_scan_buffer()" ); 1636 1637 b->yy_buf_size = size - 2; /* "- 2" to take care of EOB's */ 1638 b->yy_buf_pos = b->yy_ch_buf = base; 1639 b->yy_is_our_buffer = 0; 1640 b->yy_input_file = 0; 1641 b->yy_n_chars = b->yy_buf_size; 1642 b->yy_is_interactive = 0; 1643 b->yy_at_bol = 1; 1644 b->yy_fill_buffer = 0; 1645 b->yy_buffer_status = YY_BUFFER_NEW; 1646 1647 yy_switch_to_buffer(b ); 1648 1649 return b; 1650 } 1651 1652 /** Setup the input buffer state to scan a string. The next call to yylex() will 1653 * scan from a @e copy of @a str. 1654 * @param yystr a NUL-terminated string to scan 1655 * 1656 * @return the newly allocated buffer state object. 1657 * @note If you want to scan bytes that may contain NUL values, then use 1658 * yy_scan_bytes() instead. 1659 */ 1660 YY_BUFFER_STATE yy_scan_string (yyconst char * yystr ) 1661 { 1662 1663 return yy_scan_bytes(yystr,strlen(yystr) ); 1664 } 1665 1666 /** Setup the input buffer state to scan the given bytes. The next call to yylex() will 1667 * scan from a @e copy of @a bytes. 1668 * @param yybytes the byte buffer to scan 1669 * @param _yybytes_len the number of bytes in the buffer pointed to by @a bytes. 1670 * 1671 * @return the newly allocated buffer state object. 1672 */ 1673 YY_BUFFER_STATE yy_scan_bytes (yyconst char * yybytes, yy_size_t _yybytes_len ) 1674 { 1675 YY_BUFFER_STATE b; 1676 char *buf; 1677 yy_size_t n; 1678 int i; 1679 1680 /* Get memory for full buffer, including space for trailing EOB's. */ 1681 n = _yybytes_len + 2; 1682 buf = (char *) yyalloc(n ); 1683 if ( ! buf ) 1684 YY_FATAL_ERROR( "out of dynamic memory in yy_scan_bytes()" ); 1685 1686 for ( i = 0; i < _yybytes_len; ++i ) 1687 buf[i] = yybytes[i]; 1688 1689 buf[_yybytes_len] = buf[_yybytes_len+1] = YY_END_OF_BUFFER_CHAR; 1690 1691 b = yy_scan_buffer(buf,n ); 1692 if ( ! b ) 1693 YY_FATAL_ERROR( "bad buffer in yy_scan_bytes()" ); 1694 1695 /* It's okay to grow etc. this buffer, and we should throw it 1696 * away when we're done. 1697 */ 1698 b->yy_is_our_buffer = 1; 1699 1700 return b; 1701 } 1702 1703 #ifndef YY_EXIT_FAILURE 1704 #define YY_EXIT_FAILURE 2 1705 #endif 1706 1707 static void yy_fatal_error (yyconst char* msg ) 1708 { 1709 (void) fprintf( stderr, "%s\n", msg ); 1710 exit( YY_EXIT_FAILURE ); 1711 } 1712 1713 /* Redefine yyless() so it works in section 3 code. */ 1714 1715 #undef yyless 1716 #define yyless(n) \ 1717 do \ 1718 { \ 1719 /* Undo effects of setting up yytext. */ \ 1720 int yyless_macro_arg = (n); \ 1721 YY_LESS_LINENO(yyless_macro_arg);\ 1722 yytext[yyleng] = (yy_hold_char); \ 1723 (yy_c_buf_p) = yytext + yyless_macro_arg; \ 1724 (yy_hold_char) = *(yy_c_buf_p); \ 1725 *(yy_c_buf_p) = '\0'; \ 1726 yyleng = yyless_macro_arg; \ 1727 } \ 1728 while ( 0 ) 1729 1730 /* Accessor methods (get/set functions) to struct members. */ 1731 1732 /** Get the current line number. 1733 * 1734 */ 1735 int yyget_lineno (void) 1736 { 1737 1738 return yylineno; 1739 } 1740 1741 /** Get the input stream. 1742 * 1743 */ 1744 FILE *yyget_in (void) 1745 { 1746 return yyin; 1747 } 1748 1749 /** Get the output stream. 1750 * 1751 */ 1752 FILE *yyget_out (void) 1753 { 1754 return yyout; 1755 } 1756 1757 /** Get the length of the current token. 1758 * 1759 */ 1760 yy_size_t yyget_leng (void) 1761 { 1762 return yyleng; 1763 } 1764 1765 /** Get the current token. 1766 * 1767 */ 1768 1769 char *yyget_text (void) 1770 { 1771 return yytext; 1772 } 1773 1774 /** Set the current line number. 1775 * @param line_number 1776 * 1777 */ 1778 void yyset_lineno (int line_number ) 1779 { 1780 1781 yylineno = line_number; 1782 } 1783 1784 /** Set the input stream. This does not discard the current 1785 * input buffer. 1786 * @param in_str A readable stream. 1787 * 1788 * @see yy_switch_to_buffer 1789 */ 1790 void yyset_in (FILE * in_str ) 1791 { 1792 yyin = in_str ; 1793 } 1794 1795 void yyset_out (FILE * out_str ) 1796 { 1797 yyout = out_str ; 1798 } 1799 1800 int yyget_debug (void) 1801 { 1802 return yy_flex_debug; 1803 } 1804 1805 void yyset_debug (int bdebug ) 1806 { 1807 yy_flex_debug = bdebug ; 1808 } 1809 1810 static int yy_init_globals (void) 1811 { 1812 /* Initialization is the same as for the non-reentrant scanner. 1813 * This function is called from yylex_destroy(), so don't allocate here. 1814 */ 1815 1816 (yy_buffer_stack) = 0; 1817 (yy_buffer_stack_top) = 0; 1818 (yy_buffer_stack_max) = 0; 1819 (yy_c_buf_p) = (char *) 0; 1820 (yy_init) = 0; 1821 (yy_start) = 0; 1822 1823 /* Defined in main.c */ 1824 #ifdef YY_STDINIT 1825 yyin = stdin; 1826 yyout = stdout; 1827 #else 1828 yyin = (FILE *) 0; 1829 yyout = (FILE *) 0; 1830 #endif 1831 1832 /* For future reference: Set errno on error, since we are called by 1833 * yylex_init() 1834 */ 1835 return 0; 1836 } 1837 1838 /* yylex_destroy is for both reentrant and non-reentrant scanners. */ 1839 int yylex_destroy (void) 1840 { 1841 1842 /* Pop the buffer stack, destroying each element. */ 1843 while(YY_CURRENT_BUFFER){ 1844 yy_delete_buffer(YY_CURRENT_BUFFER ); 1845 YY_CURRENT_BUFFER_LVALUE = NULL; 1846 yypop_buffer_state(); 1847 } 1848 1849 /* Destroy the stack itself. */ 1850 yyfree((yy_buffer_stack) ); 1851 (yy_buffer_stack) = NULL; 1852 1853 /* Reset the globals. This is important in a non-reentrant scanner so the next time 1854 * yylex() is called, initialization will occur. */ 1855 yy_init_globals( ); 1856 1857 return 0; 1858 } 1859 1860 /* 1861 * Internal utility routines. 1862 */ 1863 1864 #ifndef yytext_ptr 1865 static void yy_flex_strncpy (char* s1, yyconst char * s2, int n ) 1866 { 1867 register int i; 1868 for ( i = 0; i < n; ++i ) 1869 s1[i] = s2[i]; 1870 } 1871 #endif 1872 1873 #ifdef YY_NEED_STRLEN 1874 static int yy_flex_strlen (yyconst char * s ) 1875 { 1876 register int n; 1877 for ( n = 0; s[n]; ++n ) 1878 ; 1879 1880 return n; 1881 } 1882 #endif 1883 1884 void *yyalloc (yy_size_t size ) 1885 { 1886 return (void *) malloc( size ); 1887 } 1888 1889 void *yyrealloc (void * ptr, yy_size_t size ) 1890 { 1891 /* The cast to (char *) in the following accommodates both 1892 * implementations that use char* generic pointers, and those 1893 * that use void* generic pointers. It works with the latter 1894 * because both ANSI C and C++ allow castless assignment from 1895 * any pointer type to void*, and deal with argument conversions 1896 * as though doing an assignment. 1897 */ 1898 return (void *) realloc( (char *) ptr, size ); 1899 } 1900 1901 void yyfree (void * ptr ) 1902 { 1903 free( (char *) ptr ); /* see yyrealloc() for (char *) cast */ 1904 } 1905 1906 #define YYTABLES_NAME "yytables" 1907 1908 #line 107 "calclex.l" 1909 1910 1911 1912 int 1913 yywrap () 1914 { 1915 return 1; 1916 } 1917 1918
Indexes created Thu Mar 19 00:23:35 UTC 2026