1 2 #line 3 "<stdout>" 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 FLEX_MAJOR_VERSION 10 #define YY_FLEX_MINOR_VERSION FLEX_MINOR_VERSION 11 #define YY_FLEX_SUBMINOR_VERSION FLEX_SUBMINOR_VERSION 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 14 364 #define YY_END_OF_BUFFER 15 365 /* 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[35] = 373 { 0, 374 0, 0, 15, 13, 1, 1, 13, 13, 13, 2, 375 2, 13, 13, 13, 13, 1, 9, 10, 12, 2, 376 0, 0, 2, 6, 4, 8, 5, 7, 11, 0, 377 2, 0, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 384 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 385 1, 2, 4, 1, 1, 1, 1, 5, 1, 1, 386 1, 6, 1, 1, 1, 1, 1, 7, 8, 8, 387 8, 8, 8, 8, 8, 9, 9, 10, 1, 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, 16, 15, 15, 15, 15, 15, 17, 15, 15, 391 1, 1, 1, 1, 1, 1, 14, 14, 14, 14, 392 393 14, 14, 15, 15, 15, 15, 15, 15, 15, 15, 394 15, 15, 15, 16, 15, 15, 15, 15, 15, 17, 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, 2, 2, 2, 1, 415 1, 1, 1, 3, 4, 4, 4, 1 416 } ; 417 418 static yyconst flex_int16_t yy_base[39] = 419 { 0, 420 0, 0, 48, 49, 17, 19, 35, 41, 39, 16, 421 0, 14, 32, 15, 25, 27, 49, 49, 49, 27, 422 0, 0, 0, 49, 49, 49, 49, 49, 49, 32, 423 0, 0, 0, 49, 39, 29, 34, 36 424 } ; 425 426 static yyconst flex_int16_t yy_def[39] = 427 { 0, 428 34, 1, 34, 34, 34, 34, 34, 34, 34, 34, 429 35, 34, 34, 34, 34, 34, 34, 34, 34, 34, 430 36, 37, 35, 34, 34, 34, 34, 34, 34, 36, 431 37, 38, 38, 0, 34, 34, 34, 34 432 } ; 433 434 static yyconst flex_int16_t yy_nxt[68] = 435 { 0, 436 4, 5, 6, 7, 8, 9, 10, 11, 11, 4, 437 12, 13, 14, 4, 4, 4, 4, 15, 16, 16, 438 16, 16, 20, 20, 24, 25, 27, 28, 16, 16, 439 30, 21, 22, 20, 20, 31, 31, 33, 33, 33, 440 23, 32, 29, 26, 19, 18, 17, 34, 3, 34, 441 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 442 34, 34, 34, 34, 34, 34, 34 443 } ; 444 445 static yyconst flex_int16_t yy_chk[68] = 446 { 0, 447 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 448 1, 1, 1, 1, 1, 1, 1, 1, 5, 5, 449 6, 6, 10, 10, 12, 12, 14, 14, 16, 16, 450 36, 10, 10, 20, 20, 37, 37, 38, 38, 38, 451 35, 30, 15, 13, 9, 8, 7, 3, 34, 34, 452 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 453 34, 34, 34, 34, 34, 34, 34 454 } ; 455 456 static yy_state_type yy_last_accepting_state; 457 static char *yy_last_accepting_cpos; 458 459 extern int yy_flex_debug; 460 int yy_flex_debug = 0; 461 462 /* The intent behind this definition is that it'll catch 463 * any uses of REJECT which flex missed. 464 */ 465 #define REJECT reject_used_but_not_detected 466 #define yymore() yymore_used_but_not_detected 467 #define YY_MORE_ADJ 0 468 #define YY_RESTORE_YY_MORE_OFFSET 469 char *yytext; 470 #line 1 "/usr/src/usr.bin/m4/tokenizer.l" 471 #define YY_NO_INPUT 1 472 #line 3 "/usr/src/usr.bin/m4/tokenizer.l" 473 /* $OpenBSD: tokenizer.l,v 1.7 2010/03/22 20:40:44 espie Exp $ */ 474 /* 475 * Copyright (c) 2004 Marc Espie <espie@cvs.openbsd.org> 476 * 477 * Permission to use, copy, modify, and distribute this software for any 478 * purpose with or without fee is hereby granted, provided that the above 479 * copyright notice and this permission notice appear in all copies. 480 * 481 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 482 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 483 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 484 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 485 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 486 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 487 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 488 * 489 * $FreeBSD: src/usr.bin/m4/tokenizer.l,v 1.3 2012/11/17 01:54:24 svnexp Exp $ 490 */ 491 492 #include "parser.h" 493 #include <assert.h> 494 #include <stdlib.h> 495 #include <errno.h> 496 #include <stdint.h> 497 #include <limits.h> 498 #include <sys/param.h> 499 500 extern int mimic_gnu; 501 extern int32_t yylval; 502 503 int32_t number(void); 504 int32_t parse_radix(void); 505 #line 506 "<stdout>" 506 507 #define INITIAL 0 508 509 #ifndef YY_NO_UNISTD_H 510 /* Special case for "unistd.h", since it is non-ANSI. We include it way 511 * down here because we want the user's section 1 to have been scanned first. 512 * The user has a chance to override it with an option. 513 */ 514 #include <unistd.h> 515 #endif 516 517 #ifndef YY_EXTRA_TYPE 518 #define YY_EXTRA_TYPE void * 519 #endif 520 521 static int yy_init_globals (void ); 522 523 /* Accessor methods to globals. 524 These are made visible to non-reentrant scanners for convenience. */ 525 526 int yylex_destroy (void ); 527 528 int yyget_debug (void ); 529 530 void yyset_debug (int debug_flag ); 531 532 YY_EXTRA_TYPE yyget_extra (void ); 533 534 void yyset_extra (YY_EXTRA_TYPE user_defined ); 535 536 FILE *yyget_in (void ); 537 538 void yyset_in (FILE * in_str ); 539 540 FILE *yyget_out (void ); 541 542 void yyset_out (FILE * out_str ); 543 544 yy_size_t yyget_leng (void ); 545 546 char *yyget_text (void ); 547 548 int yyget_lineno (void ); 549 550 void yyset_lineno (int line_number ); 551 552 /* Macros after this point can all be overridden by user definitions in 553 * section 1. 554 */ 555 556 #ifndef YY_SKIP_YYWRAP 557 #ifdef __cplusplus 558 extern "C" int yywrap (void ); 559 #else 560 extern int yywrap (void ); 561 #endif 562 #endif 563 564 #ifndef yytext_ptr 565 static void yy_flex_strncpy (char *,yyconst char *,int ); 566 #endif 567 568 #ifdef YY_NEED_STRLEN 569 static int yy_flex_strlen (yyconst char * ); 570 #endif 571 572 #ifndef YY_NO_INPUT 573 574 #ifdef __cplusplus 575 static int yyinput (void ); 576 #else 577 static int input (void ); 578 #endif 579 580 #endif 581 582 /* Amount of stuff to slurp up with each read. */ 583 #ifndef YY_READ_BUF_SIZE 584 #define YY_READ_BUF_SIZE 8192 585 #endif 586 587 /* Copy whatever the last rule matched to the standard output. */ 588 #ifndef ECHO 589 /* This used to be an fputs(), but since the string might contain NUL's, 590 * we now use fwrite(). 591 */ 592 #define ECHO do { if (fwrite( yytext, yyleng, 1, yyout )) {} } while (0) 593 #endif 594 595 /* Gets input and stuffs it into "buf". number of characters read, or YY_NULL, 596 * is returned in "result". 597 */ 598 #ifndef YY_INPUT 599 #define YY_INPUT(buf,result,max_size) \ 600 if ( YY_CURRENT_BUFFER_LVALUE->yy_is_interactive ) \ 601 { \ 602 int c = '*'; \ 603 size_t n; \ 604 for ( n = 0; n < max_size && \ 605 (c = getc( yyin )) != EOF && c != '\n'; ++n ) \ 606 buf[n] = (char) c; \ 607 if ( c == '\n' ) \ 608 buf[n++] = (char) c; \ 609 if ( c == EOF && ferror( yyin ) ) \ 610 YY_FATAL_ERROR( "input in flex scanner failed" ); \ 611 result = n; \ 612 } \ 613 else \ 614 { \ 615 errno=0; \ 616 while ( (result = fread(buf, 1, max_size, yyin))==0 && ferror(yyin)) \ 617 { \ 618 if( errno != EINTR) \ 619 { \ 620 YY_FATAL_ERROR( "input in flex scanner failed" ); \ 621 break; \ 622 } \ 623 errno=0; \ 624 clearerr(yyin); \ 625 } \ 626 }\ 627 \ 628 629 #endif 630 631 /* No semi-colon after return; correct usage is to write "yyterminate();" - 632 * we don't want an extra ';' after the "return" because that will cause 633 * some compilers to complain about unreachable statements. 634 */ 635 #ifndef yyterminate 636 #define yyterminate() return YY_NULL 637 #endif 638 639 /* Number of entries by which start-condition stack grows. */ 640 #ifndef YY_START_STACK_INCR 641 #define YY_START_STACK_INCR 25 642 #endif 643 644 /* Report a fatal error. */ 645 #ifndef YY_FATAL_ERROR 646 #define YY_FATAL_ERROR(msg) yy_fatal_error( msg ) 647 #endif 648 649 /* end tables serialization structures and prototypes */ 650 651 /* Default declaration of generated scanner - a define so the user can 652 * easily add parameters. 653 */ 654 #ifndef YY_DECL 655 #define YY_DECL_IS_OURS 1 656 657 extern int yylex (void); 658 659 #define YY_DECL int yylex (void) 660 #endif /* !YY_DECL */ 661 662 /* Code executed at the beginning of each rule, after yytext and yyleng 663 * have been set up. 664 */ 665 #ifndef YY_USER_ACTION 666 #define YY_USER_ACTION 667 #endif 668 669 /* Code executed at the end of each rule. */ 670 #ifndef YY_BREAK 671 #define YY_BREAK break; 672 #endif 673 674 #define YY_RULE_SETUP \ 675 YY_USER_ACTION 676 677 /** The main scanner function which does all the work. 678 */ 679 YY_DECL 680 { 681 register yy_state_type yy_current_state; 682 register char *yy_cp, *yy_bp; 683 register int yy_act; 684 685 #line 44 "/usr/src/usr.bin/m4/tokenizer.l" 686 687 #line 688 "<stdout>" 688 689 if ( !(yy_init) ) 690 { 691 (yy_init) = 1; 692 693 #ifdef YY_USER_INIT 694 YY_USER_INIT; 695 #endif 696 697 if ( ! (yy_start) ) 698 (yy_start) = 1; /* first start state */ 699 700 if ( ! yyin ) 701 yyin = stdin; 702 703 if ( ! yyout ) 704 yyout = stdout; 705 706 if ( ! YY_CURRENT_BUFFER ) { 707 yyensure_buffer_stack (); 708 YY_CURRENT_BUFFER_LVALUE = 709 yy_create_buffer(yyin,YY_BUF_SIZE ); 710 } 711 712 yy_load_buffer_state( ); 713 } 714 715 while ( 1 ) /* loops until end-of-file is reached */ 716 { 717 yy_cp = (yy_c_buf_p); 718 719 /* Support of yytext. */ 720 *yy_cp = (yy_hold_char); 721 722 /* yy_bp points to the position in yy_ch_buf of the start of 723 * the current run. 724 */ 725 yy_bp = yy_cp; 726 727 yy_current_state = (yy_start); 728 yy_match: 729 do 730 { 731 register YY_CHAR yy_c = yy_ec[YY_SC_TO_UI(*yy_cp)]; 732 if ( yy_accept[yy_current_state] ) 733 { 734 (yy_last_accepting_state) = yy_current_state; 735 (yy_last_accepting_cpos) = yy_cp; 736 } 737 while ( yy_chk[yy_base[yy_current_state] + yy_c] != yy_current_state ) 738 { 739 yy_current_state = (int) yy_def[yy_current_state]; 740 if ( yy_current_state >= 35 ) 741 yy_c = yy_meta[(unsigned int) yy_c]; 742 } 743 yy_current_state = yy_nxt[yy_base[yy_current_state] + (unsigned int) yy_c]; 744 ++yy_cp; 745 } 746 while ( yy_base[yy_current_state] != 49 ); 747 748 yy_find_action: 749 yy_act = yy_accept[yy_current_state]; 750 if ( yy_act == 0 ) 751 { /* have to back up */ 752 yy_cp = (yy_last_accepting_cpos); 753 yy_current_state = (yy_last_accepting_state); 754 yy_act = yy_accept[yy_current_state]; 755 } 756 757 YY_DO_BEFORE_ACTION; 758 759 do_action: /* This label is used only to access EOF actions. */ 760 761 switch ( yy_act ) 762 { /* beginning of action switch */ 763 case 0: /* must back up */ 764 /* undo the effects of YY_DO_BEFORE_ACTION */ 765 *yy_cp = (yy_hold_char); 766 yy_cp = (yy_last_accepting_cpos); 767 yy_current_state = (yy_last_accepting_state); 768 goto yy_find_action; 769 770 case 1: 771 /* rule 1 can match eol */ 772 YY_RULE_SETUP 773 #line 45 "/usr/src/usr.bin/m4/tokenizer.l" 774 {/* just skip it */} 775 YY_BREAK 776 case 2: 777 YY_RULE_SETUP 778 #line 46 "/usr/src/usr.bin/m4/tokenizer.l" 779 { yylval = number(); return(NUMBER); } 780 YY_BREAK 781 case 3: 782 YY_RULE_SETUP 783 #line 47 "/usr/src/usr.bin/m4/tokenizer.l" 784 { if (mimic_gnu) { 785 yylval = parse_radix(); return(NUMBER); 786 } else { 787 return(ERROR); 788 } 789 } 790 YY_BREAK 791 case 4: 792 YY_RULE_SETUP 793 #line 53 "/usr/src/usr.bin/m4/tokenizer.l" 794 { return(LE); } 795 YY_BREAK 796 case 5: 797 YY_RULE_SETUP 798 #line 54 "/usr/src/usr.bin/m4/tokenizer.l" 799 { return(GE); } 800 YY_BREAK 801 case 6: 802 YY_RULE_SETUP 803 #line 55 "/usr/src/usr.bin/m4/tokenizer.l" 804 { return(LSHIFT); } 805 YY_BREAK 806 case 7: 807 YY_RULE_SETUP 808 #line 56 "/usr/src/usr.bin/m4/tokenizer.l" 809 { return(RSHIFT); } 810 YY_BREAK 811 case 8: 812 YY_RULE_SETUP 813 #line 57 "/usr/src/usr.bin/m4/tokenizer.l" 814 { return(EQ); } 815 YY_BREAK 816 case 9: 817 YY_RULE_SETUP 818 #line 58 "/usr/src/usr.bin/m4/tokenizer.l" 819 { return(NE); } 820 YY_BREAK 821 case 10: 822 YY_RULE_SETUP 823 #line 59 "/usr/src/usr.bin/m4/tokenizer.l" 824 { return(LAND); } 825 YY_BREAK 826 case 11: 827 YY_RULE_SETUP 828 #line 60 "/usr/src/usr.bin/m4/tokenizer.l" 829 { return(LOR); } 830 YY_BREAK 831 case 12: 832 YY_RULE_SETUP 833 #line 61 "/usr/src/usr.bin/m4/tokenizer.l" 834 { if (mimic_gnu) { return (EXPONENT); } } 835 YY_BREAK 836 case 13: 837 YY_RULE_SETUP 838 #line 62 "/usr/src/usr.bin/m4/tokenizer.l" 839 { return yytext[0]; } 840 YY_BREAK 841 case 14: 842 YY_RULE_SETUP 843 #line 63 "/usr/src/usr.bin/m4/tokenizer.l" 844 ECHO; 845 YY_BREAK 846 #line 847 "<stdout>" 847 case YY_STATE_EOF(INITIAL): 848 yyterminate(); 849 850 case YY_END_OF_BUFFER: 851 { 852 /* Amount of text matched not including the EOB char. */ 853 int yy_amount_of_matched_text = (int) (yy_cp - (yytext_ptr)) - 1; 854 855 /* Undo the effects of YY_DO_BEFORE_ACTION. */ 856 *yy_cp = (yy_hold_char); 857 YY_RESTORE_YY_MORE_OFFSET 858 859 if ( YY_CURRENT_BUFFER_LVALUE->yy_buffer_status == YY_BUFFER_NEW ) 860 { 861 /* We're scanning a new file or input source. It's 862 * possible that this happened because the user 863 * just pointed yyin at a new source and called 864 * yylex(). If so, then we have to assure 865 * consistency between YY_CURRENT_BUFFER and our 866 * globals. Here is the right place to do so, because 867 * this is the first action (other than possibly a 868 * back-up) that will match for the new input source. 869 */ 870 (yy_n_chars) = YY_CURRENT_BUFFER_LVALUE->yy_n_chars; 871 YY_CURRENT_BUFFER_LVALUE->yy_input_file = yyin; 872 YY_CURRENT_BUFFER_LVALUE->yy_buffer_status = YY_BUFFER_NORMAL; 873 } 874 875 /* Note that here we test for yy_c_buf_p "<=" to the position 876 * of the first EOB in the buffer, since yy_c_buf_p will 877 * already have been incremented past the NUL character 878 * (since all states make transitions on EOB to the 879 * end-of-buffer state). Contrast this with the test 880 * in input(). 881 */ 882 if ( (yy_c_buf_p) <= &YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[(yy_n_chars)] ) 883 { /* This was really a NUL. */ 884 yy_state_type yy_next_state; 885 886 (yy_c_buf_p) = (yytext_ptr) + yy_amount_of_matched_text; 887 888 yy_current_state = yy_get_previous_state( ); 889 890 /* Okay, we're now positioned to make the NUL 891 * transition. We couldn't have 892 * yy_get_previous_state() go ahead and do it 893 * for us because it doesn't know how to deal 894 * with the possibility of jamming (and we don't 895 * want to build jamming into it because then it 896 * will run more slowly). 897 */ 898 899 yy_next_state = yy_try_NUL_trans( yy_current_state ); 900 901 yy_bp = (yytext_ptr) + YY_MORE_ADJ; 902 903 if ( yy_next_state ) 904 { 905 /* Consume the NUL. */ 906 yy_cp = ++(yy_c_buf_p); 907 yy_current_state = yy_next_state; 908 goto yy_match; 909 } 910 911 else 912 { 913 yy_cp = (yy_c_buf_p); 914 goto yy_find_action; 915 } 916 } 917 918 else switch ( yy_get_next_buffer( ) ) 919 { 920 case EOB_ACT_END_OF_FILE: 921 { 922 (yy_did_buffer_switch_on_eof) = 0; 923 924 if ( yywrap( ) ) 925 { 926 /* Note: because we've taken care in 927 * yy_get_next_buffer() to have set up 928 * yytext, we can now set up 929 * yy_c_buf_p so that if some total 930 * hoser (like flex itself) wants to 931 * call the scanner after we return the 932 * YY_NULL, it'll still work - another 933 * YY_NULL will get returned. 934 */ 935 (yy_c_buf_p) = (yytext_ptr) + YY_MORE_ADJ; 936 937 yy_act = YY_STATE_EOF(YY_START); 938 goto do_action; 939 } 940 941 else 942 { 943 if ( ! (yy_did_buffer_switch_on_eof) ) 944 YY_NEW_FILE; 945 } 946 break; 947 } 948 949 case EOB_ACT_CONTINUE_SCAN: 950 (yy_c_buf_p) = 951 (yytext_ptr) + yy_amount_of_matched_text; 952 953 yy_current_state = yy_get_previous_state( ); 954 955 yy_cp = (yy_c_buf_p); 956 yy_bp = (yytext_ptr) + YY_MORE_ADJ; 957 goto yy_match; 958 959 case EOB_ACT_LAST_MATCH: 960 (yy_c_buf_p) = 961 &YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[(yy_n_chars)]; 962 963 yy_current_state = yy_get_previous_state( ); 964 965 yy_cp = (yy_c_buf_p); 966 yy_bp = (yytext_ptr) + YY_MORE_ADJ; 967 goto yy_find_action; 968 } 969 break; 970 } 971 972 default: 973 YY_FATAL_ERROR( 974 "fatal flex scanner internal error--no action found" ); 975 } /* end of action switch */ 976 } /* end of scanning one token */ 977 } /* end of yylex */ 978 979 /* yy_get_next_buffer - try to read in a new buffer 980 * 981 * Returns a code representing an action: 982 * EOB_ACT_LAST_MATCH - 983 * EOB_ACT_CONTINUE_SCAN - continue scanning from current position 984 * EOB_ACT_END_OF_FILE - end of file 985 */ 986 static int yy_get_next_buffer (void) 987 { 988 register char *dest = YY_CURRENT_BUFFER_LVALUE->yy_ch_buf; 989 register char *source = (yytext_ptr); 990 register int number_to_move, i; 991 int ret_val; 992 993 if ( (yy_c_buf_p) > &YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[(yy_n_chars) + 1] ) 994 YY_FATAL_ERROR( 995 "fatal flex scanner internal error--end of buffer missed" ); 996 997 if ( YY_CURRENT_BUFFER_LVALUE->yy_fill_buffer == 0 ) 998 { /* Don't try to fill the buffer, so this is an EOF. */ 999 if ( (yy_c_buf_p) - (yytext_ptr) - YY_MORE_ADJ == 1 ) 1000 { 1001 /* We matched a single character, the EOB, so 1002 * treat this as a final EOF. 1003 */ 1004 return EOB_ACT_END_OF_FILE; 1005 } 1006 1007 else 1008 { 1009 /* We matched some text prior to the EOB, first 1010 * process it. 1011 */ 1012 return EOB_ACT_LAST_MATCH; 1013 } 1014 } 1015 1016 /* Try to read more data. */ 1017 1018 /* First move last chars to start of buffer. */ 1019 number_to_move = (int) ((yy_c_buf_p) - (yytext_ptr)) - 1; 1020 1021 for ( i = 0; i < number_to_move; ++i ) 1022 *(dest++) = *(source++); 1023 1024 if ( YY_CURRENT_BUFFER_LVALUE->yy_buffer_status == YY_BUFFER_EOF_PENDING ) 1025 /* don't do the read, it's not guaranteed to return an EOF, 1026 * just force an EOF 1027 */ 1028 YY_CURRENT_BUFFER_LVALUE->yy_n_chars = (yy_n_chars) = 0; 1029 1030 else 1031 { 1032 yy_size_t num_to_read = 1033 YY_CURRENT_BUFFER_LVALUE->yy_buf_size - number_to_move - 1; 1034 1035 while ( num_to_read <= 0 ) 1036 { /* Not enough room in the buffer - grow it. */ 1037 1038 /* just a shorter name for the current buffer */ 1039 YY_BUFFER_STATE b = YY_CURRENT_BUFFER_LVALUE; 1040 1041 int yy_c_buf_p_offset = 1042 (int) ((yy_c_buf_p) - b->yy_ch_buf); 1043 1044 if ( b->yy_is_our_buffer ) 1045 { 1046 yy_size_t new_size = b->yy_buf_size * 2; 1047 1048 if ( new_size <= 0 ) 1049 b->yy_buf_size += b->yy_buf_size / 8; 1050 else 1051 b->yy_buf_size *= 2; 1052 1053 b->yy_ch_buf = (char *) 1054 /* Include room in for 2 EOB chars. */ 1055 yyrealloc((void *) b->yy_ch_buf,b->yy_buf_size + 2 ); 1056 } 1057 else 1058 /* Can't grow it, we don't own it. */ 1059 b->yy_ch_buf = 0; 1060 1061 if ( ! b->yy_ch_buf ) 1062 YY_FATAL_ERROR( 1063 "fatal error - scanner input buffer overflow" ); 1064 1065 (yy_c_buf_p) = &b->yy_ch_buf[yy_c_buf_p_offset]; 1066 1067 num_to_read = YY_CURRENT_BUFFER_LVALUE->yy_buf_size - 1068 number_to_move - 1; 1069 1070 } 1071 1072 if ( num_to_read > YY_READ_BUF_SIZE ) 1073 num_to_read = YY_READ_BUF_SIZE; 1074 1075 /* Read in more data. */ 1076 YY_INPUT( (&YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[number_to_move]), 1077 (yy_n_chars), num_to_read ); 1078 1079 YY_CURRENT_BUFFER_LVALUE->yy_n_chars = (yy_n_chars); 1080 } 1081 1082 if ( (yy_n_chars) == 0 ) 1083 { 1084 if ( number_to_move == YY_MORE_ADJ ) 1085 { 1086 ret_val = EOB_ACT_END_OF_FILE; 1087 yyrestart(yyin ); 1088 } 1089 1090 else 1091 { 1092 ret_val = EOB_ACT_LAST_MATCH; 1093 YY_CURRENT_BUFFER_LVALUE->yy_buffer_status = 1094 YY_BUFFER_EOF_PENDING; 1095 } 1096 } 1097 1098 else 1099 ret_val = EOB_ACT_CONTINUE_SCAN; 1100 1101 if ((yy_size_t) ((yy_n_chars) + number_to_move) > YY_CURRENT_BUFFER_LVALUE->yy_buf_size) { 1102 /* Extend the array by 50%, plus the number we really need. */ 1103 yy_size_t new_size = (yy_n_chars) + number_to_move + ((yy_n_chars) >> 1); 1104 YY_CURRENT_BUFFER_LVALUE->yy_ch_buf = (char *) yyrealloc((void *) YY_CURRENT_BUFFER_LVALUE->yy_ch_buf,new_size ); 1105 if ( ! YY_CURRENT_BUFFER_LVALUE->yy_ch_buf ) 1106 YY_FATAL_ERROR( "out of dynamic memory in yy_get_next_buffer()" ); 1107 } 1108 1109 (yy_n_chars) += number_to_move; 1110 YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[(yy_n_chars)] = YY_END_OF_BUFFER_CHAR; 1111 YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[(yy_n_chars) + 1] = YY_END_OF_BUFFER_CHAR; 1112 1113 (yytext_ptr) = &YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[0]; 1114 1115 return ret_val; 1116 } 1117 1118 /* yy_get_previous_state - get the state just before the EOB char was reached */ 1119 1120 static yy_state_type yy_get_previous_state (void) 1121 { 1122 register yy_state_type yy_current_state; 1123 register char *yy_cp; 1124 1125 yy_current_state = (yy_start); 1126 1127 for ( yy_cp = (yytext_ptr) + YY_MORE_ADJ; yy_cp < (yy_c_buf_p); ++yy_cp ) 1128 { 1129 register YY_CHAR yy_c = (*yy_cp ? yy_ec[YY_SC_TO_UI(*yy_cp)] : 1); 1130 if ( yy_accept[yy_current_state] ) 1131 { 1132 (yy_last_accepting_state) = yy_current_state; 1133 (yy_last_accepting_cpos) = yy_cp; 1134 } 1135 while ( yy_chk[yy_base[yy_current_state] + yy_c] != yy_current_state ) 1136 { 1137 yy_current_state = (int) yy_def[yy_current_state]; 1138 if ( yy_current_state >= 35 ) 1139 yy_c = yy_meta[(unsigned int) yy_c]; 1140 } 1141 yy_current_state = yy_nxt[yy_base[yy_current_state] + (unsigned int) yy_c]; 1142 } 1143 1144 return yy_current_state; 1145 } 1146 1147 /* yy_try_NUL_trans - try to make a transition on the NUL character 1148 * 1149 * synopsis 1150 * next_state = yy_try_NUL_trans( current_state ); 1151 */ 1152 static yy_state_type yy_try_NUL_trans (yy_state_type yy_current_state ) 1153 { 1154 register int yy_is_jam; 1155 register char *yy_cp = (yy_c_buf_p); 1156 1157 register YY_CHAR yy_c = 1; 1158 if ( yy_accept[yy_current_state] ) 1159 { 1160 (yy_last_accepting_state) = yy_current_state; 1161 (yy_last_accepting_cpos) = yy_cp; 1162 } 1163 while ( yy_chk[yy_base[yy_current_state] + yy_c] != yy_current_state ) 1164 { 1165 yy_current_state = (int) yy_def[yy_current_state]; 1166 if ( yy_current_state >= 35 ) 1167 yy_c = yy_meta[(unsigned int) yy_c]; 1168 } 1169 yy_current_state = yy_nxt[yy_base[yy_current_state] + (unsigned int) yy_c]; 1170 yy_is_jam = (yy_current_state == 34); 1171 1172 return yy_is_jam ? 0 : yy_current_state; 1173 } 1174 1175 #ifndef YY_NO_INPUT 1176 #ifdef __cplusplus 1177 static int yyinput (void) 1178 #else 1179 static int input (void) 1180 #endif 1181 1182 { 1183 int c; 1184 1185 *(yy_c_buf_p) = (yy_hold_char); 1186 1187 if ( *(yy_c_buf_p) == YY_END_OF_BUFFER_CHAR ) 1188 { 1189 /* yy_c_buf_p now points to the character we want to return. 1190 * If this occurs *before* the EOB characters, then it's a 1191 * valid NUL; if not, then we've hit the end of the buffer. 1192 */ 1193 if ( (yy_c_buf_p) < &YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[(yy_n_chars)] ) 1194 /* This was really a NUL. */ 1195 *(yy_c_buf_p) = '\0'; 1196 1197 else 1198 { /* need more input */ 1199 yy_size_t offset = (yy_c_buf_p) - (yytext_ptr); 1200 ++(yy_c_buf_p); 1201 1202 switch ( yy_get_next_buffer( ) ) 1203 { 1204 case EOB_ACT_LAST_MATCH: 1205 /* This happens because yy_g_n_b() 1206 * sees that we've accumulated a 1207 * token and flags that we need to 1208 * try matching the token before 1209 * proceeding. But for input(), 1210 * there's no matching to consider. 1211 * So convert the EOB_ACT_LAST_MATCH 1212 * to EOB_ACT_END_OF_FILE. 1213 */ 1214 1215 /* Reset buffer status. */ 1216 yyrestart(yyin ); 1217 1218 /*FALLTHROUGH*/ 1219 1220 case EOB_ACT_END_OF_FILE: 1221 { 1222 if ( yywrap( ) ) 1223 return EOF; 1224 1225 if ( ! (yy_did_buffer_switch_on_eof) ) 1226 YY_NEW_FILE; 1227 #ifdef __cplusplus 1228 return yyinput(); 1229 #else 1230 return input(); 1231 #endif 1232 } 1233 1234 case EOB_ACT_CONTINUE_SCAN: 1235 (yy_c_buf_p) = (yytext_ptr) + offset; 1236 break; 1237 } 1238 } 1239 } 1240 1241 c = *(unsigned char *) (yy_c_buf_p); /* cast for 8-bit char's */ 1242 *(yy_c_buf_p) = '\0'; /* preserve yytext */ 1243 (yy_hold_char) = *++(yy_c_buf_p); 1244 1245 return c; 1246 } 1247 #endif /* ifndef YY_NO_INPUT */ 1248 1249 /** Immediately switch to a different input stream. 1250 * @param input_file A readable stream. 1251 * 1252 * @note This function does not reset the start condition to @c INITIAL . 1253 */ 1254 void yyrestart (FILE * input_file ) 1255 { 1256 1257 if ( ! YY_CURRENT_BUFFER ){ 1258 yyensure_buffer_stack (); 1259 YY_CURRENT_BUFFER_LVALUE = 1260 yy_create_buffer(yyin,YY_BUF_SIZE ); 1261 } 1262 1263 yy_init_buffer(YY_CURRENT_BUFFER,input_file ); 1264 yy_load_buffer_state( ); 1265 } 1266 1267 /** Switch to a different input buffer. 1268 * @param new_buffer The new input buffer. 1269 * 1270 */ 1271 void yy_switch_to_buffer (YY_BUFFER_STATE new_buffer ) 1272 { 1273 1274 /* TODO. We should be able to replace this entire function body 1275 * with 1276 * yypop_buffer_state(); 1277 * yypush_buffer_state(new_buffer); 1278 */ 1279 yyensure_buffer_stack (); 1280 if ( YY_CURRENT_BUFFER == new_buffer ) 1281 return; 1282 1283 if ( YY_CURRENT_BUFFER ) 1284 { 1285 /* Flush out information for old buffer. */ 1286 *(yy_c_buf_p) = (yy_hold_char); 1287 YY_CURRENT_BUFFER_LVALUE->yy_buf_pos = (yy_c_buf_p); 1288 YY_CURRENT_BUFFER_LVALUE->yy_n_chars = (yy_n_chars); 1289 } 1290 1291 YY_CURRENT_BUFFER_LVALUE = new_buffer; 1292 yy_load_buffer_state( ); 1293 1294 /* We don't actually know whether we did this switch during 1295 * EOF (yywrap()) processing, but the only time this flag 1296 * is looked at is after yywrap() is called, so it's safe 1297 * to go ahead and always set it. 1298 */ 1299 (yy_did_buffer_switch_on_eof) = 1; 1300 } 1301 1302 static void yy_load_buffer_state (void) 1303 { 1304 (yy_n_chars) = YY_CURRENT_BUFFER_LVALUE->yy_n_chars; 1305 (yytext_ptr) = (yy_c_buf_p) = YY_CURRENT_BUFFER_LVALUE->yy_buf_pos; 1306 yyin = YY_CURRENT_BUFFER_LVALUE->yy_input_file; 1307 (yy_hold_char) = *(yy_c_buf_p); 1308 } 1309 1310 /** Allocate and initialize an input buffer state. 1311 * @param file A readable stream. 1312 * @param size The character buffer size in bytes. When in doubt, use @c YY_BUF_SIZE. 1313 * 1314 * @return the allocated buffer state. 1315 */ 1316 YY_BUFFER_STATE yy_create_buffer (FILE * file, int size ) 1317 { 1318 YY_BUFFER_STATE b; 1319 1320 b = (YY_BUFFER_STATE) yyalloc(sizeof( struct yy_buffer_state ) ); 1321 if ( ! b ) 1322 YY_FATAL_ERROR( "out of dynamic memory in yy_create_buffer()" ); 1323 1324 b->yy_buf_size = size; 1325 1326 /* yy_ch_buf has to be 2 characters longer than the size given because 1327 * we need to put in 2 end-of-buffer characters. 1328 */ 1329 b->yy_ch_buf = (char *) yyalloc(b->yy_buf_size + 2 ); 1330 if ( ! b->yy_ch_buf ) 1331 YY_FATAL_ERROR( "out of dynamic memory in yy_create_buffer()" ); 1332 1333 b->yy_is_our_buffer = 1; 1334 1335 yy_init_buffer(b,file ); 1336 1337 return b; 1338 } 1339 1340 /** Destroy the buffer. 1341 * @param b a buffer created with yy_create_buffer() 1342 * 1343 */ 1344 void yy_delete_buffer (YY_BUFFER_STATE b ) 1345 { 1346 1347 if ( ! b ) 1348 return; 1349 1350 if ( b == YY_CURRENT_BUFFER ) /* Not sure if we should pop here. */ 1351 YY_CURRENT_BUFFER_LVALUE = (YY_BUFFER_STATE) 0; 1352 1353 if ( b->yy_is_our_buffer ) 1354 yyfree((void *) b->yy_ch_buf ); 1355 1356 yyfree((void *) b ); 1357 } 1358 1359 /* Initializes or reinitializes a buffer. 1360 * This function is sometimes called more than once on the same buffer, 1361 * such as during a yyrestart() or at EOF. 1362 */ 1363 static void yy_init_buffer (YY_BUFFER_STATE b, FILE * file ) 1364 1365 { 1366 int oerrno = errno; 1367 1368 yy_flush_buffer(b ); 1369 1370 b->yy_input_file = file; 1371 b->yy_fill_buffer = 1; 1372 1373 /* If b is the current buffer, then yy_init_buffer was _probably_ 1374 * called from yyrestart() or through yy_get_next_buffer. 1375 * In that case, we don't want to reset the lineno or column. 1376 */ 1377 if (b != YY_CURRENT_BUFFER){ 1378 b->yy_bs_lineno = 1; 1379 b->yy_bs_column = 0; 1380 } 1381 1382 b->yy_is_interactive = file ? (isatty( fileno(file) ) > 0) : 0; 1383 1384 errno = oerrno; 1385 } 1386 1387 /** Discard all buffered characters. On the next scan, YY_INPUT will be called. 1388 * @param b the buffer state to be flushed, usually @c YY_CURRENT_BUFFER. 1389 * 1390 */ 1391 void yy_flush_buffer (YY_BUFFER_STATE b ) 1392 { 1393 if ( ! b ) 1394 return; 1395 1396 b->yy_n_chars = 0; 1397 1398 /* We always need two end-of-buffer characters. The first causes 1399 * a transition to the end-of-buffer state. The second causes 1400 * a jam in that state. 1401 */ 1402 b->yy_ch_buf[0] = YY_END_OF_BUFFER_CHAR; 1403 b->yy_ch_buf[1] = YY_END_OF_BUFFER_CHAR; 1404 1405 b->yy_buf_pos = &b->yy_ch_buf[0]; 1406 1407 b->yy_at_bol = 1; 1408 b->yy_buffer_status = YY_BUFFER_NEW; 1409 1410 if ( b == YY_CURRENT_BUFFER ) 1411 yy_load_buffer_state( ); 1412 } 1413 1414 /** Pushes the new state onto the stack. The new state becomes 1415 * the current state. This function will allocate the stack 1416 * if necessary. 1417 * @param new_buffer The new state. 1418 * 1419 */ 1420 void yypush_buffer_state (YY_BUFFER_STATE new_buffer ) 1421 { 1422 if (new_buffer == NULL) 1423 return; 1424 1425 yyensure_buffer_stack(); 1426 1427 /* This block is copied from yy_switch_to_buffer. */ 1428 if ( YY_CURRENT_BUFFER ) 1429 { 1430 /* Flush out information for old buffer. */ 1431 *(yy_c_buf_p) = (yy_hold_char); 1432 YY_CURRENT_BUFFER_LVALUE->yy_buf_pos = (yy_c_buf_p); 1433 YY_CURRENT_BUFFER_LVALUE->yy_n_chars = (yy_n_chars); 1434 } 1435 1436 /* Only push if top exists. Otherwise, replace top. */ 1437 if (YY_CURRENT_BUFFER) 1438 (yy_buffer_stack_top)++; 1439 YY_CURRENT_BUFFER_LVALUE = new_buffer; 1440 1441 /* copied from yy_switch_to_buffer. */ 1442 yy_load_buffer_state( ); 1443 (yy_did_buffer_switch_on_eof) = 1; 1444 } 1445 1446 /** Removes and deletes the top of the stack, if present. 1447 * The next element becomes the new top. 1448 * 1449 */ 1450 void yypop_buffer_state (void) 1451 { 1452 if (!YY_CURRENT_BUFFER) 1453 return; 1454 1455 yy_delete_buffer(YY_CURRENT_BUFFER ); 1456 YY_CURRENT_BUFFER_LVALUE = NULL; 1457 if ((yy_buffer_stack_top) > 0) 1458 --(yy_buffer_stack_top); 1459 1460 if (YY_CURRENT_BUFFER) { 1461 yy_load_buffer_state( ); 1462 (yy_did_buffer_switch_on_eof) = 1; 1463 } 1464 } 1465 1466 /* Allocates the stack if it does not exist. 1467 * Guarantees space for at least one push. 1468 */ 1469 static void yyensure_buffer_stack (void) 1470 { 1471 yy_size_t num_to_alloc; 1472 1473 if (!(yy_buffer_stack)) { 1474 1475 /* First allocation is just for 2 elements, since we don't know if this 1476 * scanner will even need a stack. We use 2 instead of 1 to avoid an 1477 * immediate realloc on the next call. 1478 */ 1479 num_to_alloc = 1; 1480 (yy_buffer_stack) = (struct yy_buffer_state**)yyalloc 1481 (num_to_alloc * sizeof(struct yy_buffer_state*) 1482 ); 1483 if ( ! (yy_buffer_stack) ) 1484 YY_FATAL_ERROR( "out of dynamic memory in yyensure_buffer_stack()" ); 1485 1486 memset((yy_buffer_stack), 0, num_to_alloc * sizeof(struct yy_buffer_state*)); 1487 1488 (yy_buffer_stack_max) = num_to_alloc; 1489 (yy_buffer_stack_top) = 0; 1490 return; 1491 } 1492 1493 if ((yy_buffer_stack_top) >= ((yy_buffer_stack_max)) - 1){ 1494 1495 /* Increase the buffer to prepare for a possible push. */ 1496 int grow_size = 8 /* arbitrary grow size */; 1497 1498 num_to_alloc = (yy_buffer_stack_max) + grow_size; 1499 (yy_buffer_stack) = (struct yy_buffer_state**)yyrealloc 1500 ((yy_buffer_stack), 1501 num_to_alloc * sizeof(struct yy_buffer_state*) 1502 ); 1503 if ( ! (yy_buffer_stack) ) 1504 YY_FATAL_ERROR( "out of dynamic memory in yyensure_buffer_stack()" ); 1505 1506 /* zero only the new slots.*/ 1507 memset((yy_buffer_stack) + (yy_buffer_stack_max), 0, grow_size * sizeof(struct yy_buffer_state*)); 1508 (yy_buffer_stack_max) = num_to_alloc; 1509 } 1510 } 1511 1512 /** Setup the input buffer state to scan directly from a user-specified character buffer. 1513 * @param base the character buffer 1514 * @param size the size in bytes of the character buffer 1515 * 1516 * @return the newly allocated buffer state object. 1517 */ 1518 YY_BUFFER_STATE yy_scan_buffer (char * base, yy_size_t size ) 1519 { 1520 YY_BUFFER_STATE b; 1521 1522 if ( size < 2 || 1523 base[size-2] != YY_END_OF_BUFFER_CHAR || 1524 base[size-1] != YY_END_OF_BUFFER_CHAR ) 1525 /* They forgot to leave room for the EOB's. */ 1526 return 0; 1527 1528 b = (YY_BUFFER_STATE) yyalloc(sizeof( struct yy_buffer_state ) ); 1529 if ( ! b ) 1530 YY_FATAL_ERROR( "out of dynamic memory in yy_scan_buffer()" ); 1531 1532 b->yy_buf_size = size - 2; /* "- 2" to take care of EOB's */ 1533 b->yy_buf_pos = b->yy_ch_buf = base; 1534 b->yy_is_our_buffer = 0; 1535 b->yy_input_file = 0; 1536 b->yy_n_chars = b->yy_buf_size; 1537 b->yy_is_interactive = 0; 1538 b->yy_at_bol = 1; 1539 b->yy_fill_buffer = 0; 1540 b->yy_buffer_status = YY_BUFFER_NEW; 1541 1542 yy_switch_to_buffer(b ); 1543 1544 return b; 1545 } 1546 1547 /** Setup the input buffer state to scan a string. The next call to yylex() will 1548 * scan from a @e copy of @a str. 1549 * @param yystr a NUL-terminated string to scan 1550 * 1551 * @return the newly allocated buffer state object. 1552 * @note If you want to scan bytes that may contain NUL values, then use 1553 * yy_scan_bytes() instead. 1554 */ 1555 YY_BUFFER_STATE yy_scan_string (yyconst char * yystr ) 1556 { 1557 1558 return yy_scan_bytes(yystr,strlen(yystr) ); 1559 } 1560 1561 /** Setup the input buffer state to scan the given bytes. The next call to yylex() will 1562 * scan from a @e copy of @a bytes. 1563 * @param yybytes the byte buffer to scan 1564 * @param _yybytes_len the number of bytes in the buffer pointed to by @a bytes. 1565 * 1566 * @return the newly allocated buffer state object. 1567 */ 1568 YY_BUFFER_STATE yy_scan_bytes (yyconst char * yybytes, yy_size_t _yybytes_len ) 1569 { 1570 YY_BUFFER_STATE b; 1571 char *buf; 1572 yy_size_t n; 1573 yy_size_t i; 1574 1575 /* Get memory for full buffer, including space for trailing EOB's. */ 1576 n = _yybytes_len + 2; 1577 buf = (char *) yyalloc(n ); 1578 if ( ! buf ) 1579 YY_FATAL_ERROR( "out of dynamic memory in yy_scan_bytes()" ); 1580 1581 for ( i = 0; i < _yybytes_len; ++i ) 1582 buf[i] = yybytes[i]; 1583 1584 buf[_yybytes_len] = buf[_yybytes_len+1] = YY_END_OF_BUFFER_CHAR; 1585 1586 b = yy_scan_buffer(buf,n ); 1587 if ( ! b ) 1588 YY_FATAL_ERROR( "bad buffer in yy_scan_bytes()" ); 1589 1590 /* It's okay to grow etc. this buffer, and we should throw it 1591 * away when we're done. 1592 */ 1593 b->yy_is_our_buffer = 1; 1594 1595 return b; 1596 } 1597 1598 #ifndef YY_EXIT_FAILURE 1599 #define YY_EXIT_FAILURE 2 1600 #endif 1601 1602 static void yy_fatal_error (yyconst char* msg ) 1603 { 1604 (void) fprintf( stderr, "%s\n", msg ); 1605 exit( YY_EXIT_FAILURE ); 1606 } 1607 1608 /* Redefine yyless() so it works in section 3 code. */ 1609 1610 #undef yyless 1611 #define yyless(n) \ 1612 do \ 1613 { \ 1614 /* Undo effects of setting up yytext. */ \ 1615 int yyless_macro_arg = (n); \ 1616 YY_LESS_LINENO(yyless_macro_arg);\ 1617 yytext[yyleng] = (yy_hold_char); \ 1618 (yy_c_buf_p) = yytext + yyless_macro_arg; \ 1619 (yy_hold_char) = *(yy_c_buf_p); \ 1620 *(yy_c_buf_p) = '\0'; \ 1621 yyleng = yyless_macro_arg; \ 1622 } \ 1623 while ( 0 ) 1624 1625 /* Accessor methods (get/set functions) to struct members. */ 1626 1627 /** Get the current line number. 1628 * 1629 */ 1630 int yyget_lineno (void) 1631 { 1632 1633 return yylineno; 1634 } 1635 1636 /** Get the input stream. 1637 * 1638 */ 1639 FILE *yyget_in (void) 1640 { 1641 return yyin; 1642 } 1643 1644 /** Get the output stream. 1645 * 1646 */ 1647 FILE *yyget_out (void) 1648 { 1649 return yyout; 1650 } 1651 1652 /** Get the length of the current token. 1653 * 1654 */ 1655 yy_size_t yyget_leng (void) 1656 { 1657 return yyleng; 1658 } 1659 1660 /** Get the current token. 1661 * 1662 */ 1663 1664 char *yyget_text (void) 1665 { 1666 return yytext; 1667 } 1668 1669 /** Set the current line number. 1670 * @param line_number 1671 * 1672 */ 1673 void yyset_lineno (int line_number ) 1674 { 1675 1676 yylineno = line_number; 1677 } 1678 1679 /** Set the input stream. This does not discard the current 1680 * input buffer. 1681 * @param in_str A readable stream. 1682 * 1683 * @see yy_switch_to_buffer 1684 */ 1685 void yyset_in (FILE * in_str ) 1686 { 1687 yyin = in_str ; 1688 } 1689 1690 void yyset_out (FILE * out_str ) 1691 { 1692 yyout = out_str ; 1693 } 1694 1695 int yyget_debug (void) 1696 { 1697 return yy_flex_debug; 1698 } 1699 1700 void yyset_debug (int bdebug ) 1701 { 1702 yy_flex_debug = bdebug ; 1703 } 1704 1705 static int yy_init_globals (void) 1706 { 1707 /* Initialization is the same as for the non-reentrant scanner. 1708 * This function is called from yylex_destroy(), so don't allocate here. 1709 */ 1710 1711 (yy_buffer_stack) = 0; 1712 (yy_buffer_stack_top) = 0; 1713 (yy_buffer_stack_max) = 0; 1714 (yy_c_buf_p) = (char *) 0; 1715 (yy_init) = 0; 1716 (yy_start) = 0; 1717 1718 /* Defined in main.c */ 1719 #ifdef YY_STDINIT 1720 yyin = stdin; 1721 yyout = stdout; 1722 #else 1723 yyin = (FILE *) 0; 1724 yyout = (FILE *) 0; 1725 #endif 1726 1727 /* For future reference: Set errno on error, since we are called by 1728 * yylex_init() 1729 */ 1730 return 0; 1731 } 1732 1733 /* yylex_destroy is for both reentrant and non-reentrant scanners. */ 1734 int yylex_destroy (void) 1735 { 1736 1737 /* Pop the buffer stack, destroying each element. */ 1738 while(YY_CURRENT_BUFFER){ 1739 yy_delete_buffer(YY_CURRENT_BUFFER ); 1740 YY_CURRENT_BUFFER_LVALUE = NULL; 1741 yypop_buffer_state(); 1742 } 1743 1744 /* Destroy the stack itself. */ 1745 yyfree((yy_buffer_stack) ); 1746 (yy_buffer_stack) = NULL; 1747 1748 /* Reset the globals. This is important in a non-reentrant scanner so the next time 1749 * yylex() is called, initialization will occur. */ 1750 yy_init_globals( ); 1751 1752 return 0; 1753 } 1754 1755 /* 1756 * Internal utility routines. 1757 */ 1758 1759 #ifndef yytext_ptr 1760 static void yy_flex_strncpy (char* s1, yyconst char * s2, int n ) 1761 { 1762 register int i; 1763 for ( i = 0; i < n; ++i ) 1764 s1[i] = s2[i]; 1765 } 1766 #endif 1767 1768 #ifdef YY_NEED_STRLEN 1769 static int yy_flex_strlen (yyconst char * s ) 1770 { 1771 register int n; 1772 for ( n = 0; s[n]; ++n ) 1773 ; 1774 1775 return n; 1776 } 1777 #endif 1778 1779 void *yyalloc (yy_size_t size ) 1780 { 1781 return (void *) malloc( size ); 1782 } 1783 1784 void *yyrealloc (void * ptr, yy_size_t size ) 1785 { 1786 /* The cast to (char *) in the following accommodates both 1787 * implementations that use char* generic pointers, and those 1788 * that use void* generic pointers. It works with the latter 1789 * because both ANSI C and C++ allow castless assignment from 1790 * any pointer type to void*, and deal with argument conversions 1791 * as though doing an assignment. 1792 */ 1793 return (void *) realloc( (char *) ptr, size ); 1794 } 1795 1796 void yyfree (void * ptr ) 1797 { 1798 free( (char *) ptr ); /* see yyrealloc() for (char *) cast */ 1799 } 1800 1801 #define YYTABLES_NAME "yytables" 1802 1803 #line 63 "/usr/src/usr.bin/m4/tokenizer.l" 1804 1805 1806 1807 int32_t 1808 number(void) 1809 { 1810 long l; 1811 1812 errno = 0; 1813 l = strtol(yytext, NULL, 0); 1814 if (((l == LONG_MAX || l == LONG_MIN) && errno == ERANGE) || 1815 l > INT32_MAX || l < INT32_MIN) { 1816 fprintf(stderr, "m4: numeric overflow in expr: %s\n", yytext); 1817 } 1818 return l; 1819 } 1820 1821 int32_t 1822 parse_radix(void) 1823 { 1824 long base; 1825 char *next; 1826 long l; 1827 int d; 1828 1829 l = 0; 1830 base = strtol(yytext + 2, &next, 0); 1831 if (base > 36 || next == NULL) { 1832 fprintf(stderr, "m4: error in number %s\n", yytext); 1833 } else { 1834 next++; 1835 while (*next != 0) { 1836 if (*next >= '0' && *next <= '9') 1837 d = *next - '0'; 1838 else if (*next >= 'a' && *next <= 'z') 1839 d = *next - 'a' + 10; 1840 else { 1841 assert(*next >= 'A' && *next <= 'Z'); 1842 d = *next - 'A' + 10; 1843 } 1844 if (d >= base) { 1845 fprintf(stderr, 1846 "m4: error in number %s\n", yytext); 1847 return 0; 1848 } 1849 l = base * l + d; 1850 next++; 1851 } 1852 } 1853 return l; 1854 } 1855