| blob | fdce114f99c066cfa086a802a406b339e4ed3c2c |
1 /* A lexical scanner generated by flex */
3 /* Scanner skeleton version:
4 * $Header: /home/daffy/u0/vern/flex/RCS/flex.skl,v 2.91 96/09/10 16:58:48 vern Exp $
5 * $FreeBSD: src/usr.bin/lex/flex.skl,v 1.4 1999/10/27 07:56:44 obrien Exp $
6 * $DragonFly: src/usr.bin/lex/flex.skl,v 1.7 2008/05/01 20:01:24 swildner Exp $
7 */
9 #define FLEX_SCANNER
10 #define YY_FLEX_MAJOR_VERSION 2
11 #define YY_FLEX_MINOR_VERSION 5
13 %-
14 #include <stdio.h>
15 %*
18 /* cfront 1.2 defines "c_plusplus" instead of "__cplusplus" */
19 #ifdef c_plusplus
20 #ifndef __cplusplus
21 #define __cplusplus
22 #endif
23 #endif
26 #ifdef __cplusplus
28 #include <stdlib.h>
29 %+
30 #include <iosfwd>
31 using namespace std;
32 %*
33 #include <unistd.h>
35 /* Use prototypes in function declarations. */
36 #define YY_USE_PROTOS
38 /* The "const" storage-class-modifier is valid. */
39 #define YY_USE_CONST
41 #else /* ! __cplusplus */
43 #include <unistd.h>
45 #if __STDC__
47 #define YY_USE_PROTOS
48 #define YY_USE_CONST
50 #endif /* __STDC__ */
51 #endif /* ! __cplusplus */
53 #ifdef YY_USE_CONST
54 #define yyconst const
55 #else
56 #define yyconst
57 #endif
60 #ifdef YY_USE_PROTOS
61 #define YY_PROTO(proto) proto
62 #else
63 #define YY_PROTO(proto) ()
64 #endif
66 /* Returned upon end-of-file. */
67 #define YY_NULL 0
69 /* Promotes a possibly negative, possibly signed char to an unsigned
70 * integer for use as an array index. If the signed char is negative,
71 * we want to instead treat it as an 8-bit unsigned char, hence the
72 * double cast.
73 */
74 #define YY_SC_TO_UI(c) ((unsigned int) (unsigned char) c)
76 /* Enter a start condition. This macro really ought to take a parameter,
77 * but we do it the disgusting crufty way forced on us by the ()-less
78 * definition of BEGIN.
79 */
80 #define BEGIN yy_start = 1 + 2 *
82 /* Translate the current start state into a value that can be later handed
83 * to BEGIN to return to the state. The YYSTATE alias is for lex
84 * compatibility.
85 */
86 #define YY_START ((yy_start - 1) / 2)
87 #define YYSTATE YY_START
89 /* Action number for EOF rule of a given start state. */
90 #define YY_STATE_EOF(state) (YY_END_OF_BUFFER + state + 1)
92 /* Special action meaning "start processing a new file". */
93 #define YY_NEW_FILE yyrestart( yyin )
95 #define YY_END_OF_BUFFER_CHAR 0
97 /* Size of default input buffer. */
98 #define YY_BUF_SIZE 16384
100 typedef struct yy_buffer_state *YY_BUFFER_STATE;
102 extern int yyleng;
103 %-
104 extern FILE *yyin, *yyout;
105 %*
107 #define EOB_ACT_CONTINUE_SCAN 0
108 #define EOB_ACT_END_OF_FILE 1
109 #define EOB_ACT_LAST_MATCH 2
111 /* The funky do-while in the following #define is used to turn the definition
112 * int a single C statement (which needs a semi-colon terminator). This
113 * avoids problems with code like:
114 *
115 * if ( condition_holds )
116 * yyless( 5 );
117 * else
118 * do_something_else();
119 *
120 * Prior to using the do-while the compiler would get upset at the
121 * "else" because it interpreted the "if" statement as being all
122 * done when it reached the ';' after the yyless() call.
123 */
125 /* Return all but the first 'n' matched characters back to the input stream. */
127 #define yyless(n) \
128 do \
129 { \
130 /* Undo effects of setting up yytext. */ \
131 *yy_cp = yy_hold_char; \
132 YY_RESTORE_YY_MORE_OFFSET \
133 yy_c_buf_p = yy_cp = yy_bp + n - YY_MORE_ADJ; \
134 YY_DO_BEFORE_ACTION; /* set up yytext again */ \
135 } \
136 while ( 0 )
138 #define unput(c) yyunput( c, yytext_ptr )
140 /* The following is because we cannot portably get our hands on size_t
141 * (without autoconf's help, which isn't available because we want
142 * flex-generated scanners to compile on their own).
143 */
144 typedef unsigned int yy_size_t;
147 struct yy_buffer_state
148 {
149 %-
150 FILE *yy_input_file;
151 %+
152 istream* yy_input_file;
153 %*
155 char *yy_ch_buf; /* input buffer */
156 char *yy_buf_pos; /* current position in input buffer */
158 /* Size of input buffer in bytes, not including room for EOB
159 * characters.
160 */
161 yy_size_t yy_buf_size;
163 /* Number of characters read into yy_ch_buf, not including EOB
164 * characters.
165 */
166 int yy_n_chars;
168 /* Whether we "own" the buffer - i.e., we know we created it,
169 * and can realloc() it to grow it, and should free() it to
170 * delete it.
171 */
172 int yy_is_our_buffer;
174 /* Whether this is an "interactive" input source; if so, and
175 * if we're using stdio for input, then we want to use getc()
176 * instead of fread(), to make sure we stop fetching input after
177 * each newline.
178 */
179 int yy_is_interactive;
181 /* Whether we're considered to be at the beginning of a line.
182 * If so, '^' rules will be active on the next match, otherwise
183 * not.
184 */
185 int yy_at_bol;
187 /* Whether to try to fill the input buffer when we reach the
188 * end of it.
189 */
190 int yy_fill_buffer;
192 int yy_buffer_status;
193 #define YY_BUFFER_NEW 0
194 #define YY_BUFFER_NORMAL 1
195 /* When an EOF's been seen but there's still some text to process
196 * then we mark the buffer as YY_EOF_PENDING, to indicate that we
197 * shouldn't try reading from the input source any more. We might
198 * still have a bunch of tokens to match, though, because of
199 * possible backing-up.
200 *
201 * When we actually see the EOF, we change the status to "new"
202 * (via yyrestart()), so that the user can continue scanning by
203 * just pointing yyin at a new input file.
204 */
205 #define YY_BUFFER_EOF_PENDING 2
206 };
208 %- Standard (non-C++) definition
209 static YY_BUFFER_STATE yy_current_buffer = 0;
210 %*
212 /* We provide macros for accessing buffer states in case in the
213 * future we want to put the buffer states in a more general
214 * "scanner state".
215 */
216 #define YY_CURRENT_BUFFER yy_current_buffer
219 %- Standard (non-C++) definition
220 /* yy_hold_char holds the character lost when yytext is formed. */
221 static char yy_hold_char;
223 static int yy_n_chars; /* number of characters read into yy_ch_buf */
226 int yyleng;
228 /* Points to current character in buffer. */
229 static char *yy_c_buf_p = (char *) 0;
230 static int yy_init = 1; /* whether we need to initialize */
231 static int yy_start = 0; /* start state number */
233 /* Flag which is used to allow yywrap()'s to do buffer switches
234 * instead of setting up a fresh yyin. A bit of a hack ...
235 */
236 static int yy_did_buffer_switch_on_eof;
238 void yyrestart YY_PROTO(( FILE *input_file ));
240 void yy_switch_to_buffer YY_PROTO(( YY_BUFFER_STATE new_buffer ));
241 void yy_load_buffer_state YY_PROTO(( void ));
242 YY_BUFFER_STATE yy_create_buffer YY_PROTO(( FILE *file, int size ));
243 void yy_delete_buffer YY_PROTO(( YY_BUFFER_STATE b ));
244 void yy_init_buffer YY_PROTO(( YY_BUFFER_STATE b, FILE *file ));
245 void yy_flush_buffer YY_PROTO(( YY_BUFFER_STATE b ));
246 #define YY_FLUSH_BUFFER yy_flush_buffer( yy_current_buffer )
248 YY_BUFFER_STATE yy_scan_buffer YY_PROTO(( char *base, yy_size_t size ));
249 YY_BUFFER_STATE yy_scan_string YY_PROTO(( yyconst char *yy_str ));
250 YY_BUFFER_STATE yy_scan_bytes YY_PROTO(( yyconst char *bytes, int len ));
251 %*
253 static void *yy_flex_alloc YY_PROTO(( yy_size_t ));
254 static void *yy_flex_realloc YY_PROTO(( void *, yy_size_t ))
255 #ifdef __GNUC__
256 __attribute__((__unused__))
257 #endif
258 ;
259 static void yy_flex_free YY_PROTO(( void * ));
261 #define yy_new_buffer yy_create_buffer
263 #define yy_set_interactive(is_interactive) \
264 { \
265 if ( ! yy_current_buffer ) \
266 yy_current_buffer = yy_create_buffer( yyin, YY_BUF_SIZE ); \
267 yy_current_buffer->yy_is_interactive = is_interactive; \
268 }
270 #define yy_set_bol(at_bol) \
271 { \
272 if ( ! yy_current_buffer ) \
273 yy_current_buffer = yy_create_buffer( yyin, YY_BUF_SIZE ); \
274 yy_current_buffer->yy_at_bol = at_bol; \
275 }
277 #define YY_AT_BOL() (yy_current_buffer->yy_at_bol)
279 %% yytext/yyin/yyout/yy_state_type/yylineno etc. def's & init go here
281 %- Standard (non-C++) definition
282 static yy_state_type yy_get_previous_state YY_PROTO(( void ));
283 static yy_state_type yy_try_NUL_trans YY_PROTO(( yy_state_type current_state ));
284 static int yy_get_next_buffer YY_PROTO(( void ));
285 static void yy_fatal_error YY_PROTO(( yyconst char msg[] ));
286 %*
288 /* Done after the current pattern has been matched and before the
289 * corresponding action - sets up yytext.
290 */
291 #define YY_DO_BEFORE_ACTION \
292 yytext_ptr = yy_bp; \
293 %% code to fiddle yytext and yyleng for yymore() goes here
294 yy_hold_char = *yy_cp; \
295 *yy_cp = '\0'; \
296 %% code to copy yytext_ptr to yytext[] goes here, if %array
297 yy_c_buf_p = yy_cp;
299 %% data tables for the DFA and the user's section 1 definitions go here
301 /* Macros after this point can all be overridden by user definitions in
302 * section 1.
303 */
305 #ifndef YY_SKIP_YYWRAP
306 #ifdef __cplusplus
307 extern "C" int yywrap YY_PROTO(( void ));
308 #else
309 extern int yywrap YY_PROTO(( void ));
310 #endif
311 #endif
313 %-
314 #ifndef YY_NO_UNPUT
315 static void yyunput YY_PROTO(( int c, char *buf_ptr ));
316 #endif
317 %*
319 #ifndef yytext_ptr
320 static void yy_flex_strncpy YY_PROTO(( char *, yyconst char *, int ));
321 #endif
323 #ifdef YY_NEED_STRLEN
324 static int yy_flex_strlen YY_PROTO(( yyconst char * ));
325 #endif
327 #ifndef YY_NO_INPUT
328 %- Standard (non-C++) definition
329 #ifdef __cplusplus
330 static int yyinput YY_PROTO(( void ));
331 #else
332 static int input YY_PROTO(( void ));
333 #endif
334 %*
335 #endif
337 #if YY_STACK_USED
338 static int yy_start_stack_ptr = 0;
339 static int yy_start_stack_depth = 0;
340 static int *yy_start_stack = 0;
341 #ifndef YY_NO_PUSH_STATE
342 static void yy_push_state YY_PROTO(( int new_state ));
343 #endif
344 #ifndef YY_NO_POP_STATE
345 static void yy_pop_state YY_PROTO(( void ));
346 #endif
347 #ifndef YY_NO_TOP_STATE
348 static int yy_top_state YY_PROTO(( void ));
349 #endif
351 #else
352 #define YY_NO_PUSH_STATE 1
353 #define YY_NO_POP_STATE 1
354 #define YY_NO_TOP_STATE 1
355 #endif
357 #ifdef YY_MALLOC_DECL
358 YY_MALLOC_DECL
359 #else
360 #if __STDC__
361 #ifndef __cplusplus
362 #include <stdlib.h>
363 #endif
364 #else
365 /* Just try to get by without declaring the routines. This will fail
366 * miserably on non-ANSI systems for which sizeof(size_t) != sizeof(int)
367 * or sizeof(void*) != sizeof(int).
368 */
369 #endif
370 #endif
372 /* Amount of stuff to slurp up with each read. */
373 #ifndef YY_READ_BUF_SIZE
374 #define YY_READ_BUF_SIZE 8192
375 #endif
377 /* Copy whatever the last rule matched to the standard output. */
379 #ifndef ECHO
380 %- Standard (non-C++) definition
381 /* This used to be an fputs(), but since the string might contain NUL's,
382 * we now use fwrite().
383 */
384 #define ECHO (void) fwrite( yytext, yyleng, 1, yyout )
385 %+ C++ definition
386 #define ECHO LexerOutput( yytext, yyleng )
387 %*
388 #endif
390 /* Gets input and stuffs it into "buf". number of characters read, or YY_NULL,
391 * is returned in "result".
392 */
393 #ifndef YY_INPUT
394 #define YY_INPUT(buf,result,max_size) \
395 %% fread()/read() definition of YY_INPUT goes here unless we're doing C++
396 %+ C++ definition
397 if ( (result = LexerInput( (char *) buf, max_size )) < 0 ) \
398 YY_FATAL_ERROR( "input in flex scanner failed" );
399 %*
400 #endif
402 /* No semi-colon after return; correct usage is to write "yyterminate();" -
403 * we don't want an extra ';' after the "return" because that will cause
404 * some compilers to complain about unreachable statements.
405 */
406 #ifndef yyterminate
407 #define yyterminate() return YY_NULL
408 #endif
410 /* Number of entries by which start-condition stack grows. */
411 #ifndef YY_START_STACK_INCR
412 #define YY_START_STACK_INCR 25
413 #endif
415 /* Report a fatal error. */
416 #ifndef YY_FATAL_ERROR
417 %-
418 #define YY_FATAL_ERROR(msg) yy_fatal_error( msg )
419 %+
420 #define YY_FATAL_ERROR(msg) LexerError( msg )
421 %*
422 #endif
424 /* Default declaration of generated scanner - a define so the user can
425 * easily add parameters.
426 */
427 #ifndef YY_DECL
428 %- Standard (non-C++) definition
429 #define YY_DECL int yylex YY_PROTO(( void ))
430 %+ C++ definition
431 #define YY_DECL int yyFlexLexer::yylex()
432 %*
433 #endif
435 /* Code executed at the beginning of each rule, after yytext and yyleng
436 * have been set up.
437 */
438 #ifndef YY_USER_ACTION
439 #define YY_USER_ACTION
440 #endif
442 /* Code executed at the end of each rule. */
443 #ifndef YY_BREAK
444 #define YY_BREAK break;
445 #endif
447 %% YY_RULE_SETUP definition goes here
449 YY_DECL
450 {
451 register yy_state_type yy_current_state;
452 register char *yy_cp, *yy_bp;
453 register int yy_act;
455 %% user's declarations go here
457 if ( yy_init )
458 {
459 yy_init = 0;
461 #ifdef YY_USER_INIT
462 YY_USER_INIT;
463 #endif
465 if ( ! yy_start )
466 yy_start = 1; /* first start state */
468 if ( ! yyin )
469 %-
470 yyin = stdin;
471 %+
472 yyin = &cin;
473 %*
475 if ( ! yyout )
476 %-
477 yyout = stdout;
478 %+
479 yyout = &cout;
480 %*
482 if ( ! yy_current_buffer )
483 yy_current_buffer =
484 yy_create_buffer( yyin, YY_BUF_SIZE );
486 yy_load_buffer_state();
487 }
489 while ( 1 ) /* loops until end-of-file is reached */
490 {
491 %% yymore()-related code goes here
492 yy_cp = yy_c_buf_p;
494 /* Support of yytext. */
495 *yy_cp = yy_hold_char;
497 /* yy_bp points to the position in yy_ch_buf of the start of
498 * the current run.
499 */
500 yy_bp = yy_cp;
502 %% code to set up and find next match goes here
504 yy_find_action:
505 %% code to find the action number goes here
507 YY_DO_BEFORE_ACTION;
509 %% code for yylineno update goes here
511 do_action: /* This label is used only to access EOF actions. */
513 %% debug code goes here
515 switch ( yy_act )
516 { /* beginning of action switch */
517 %% actions go here
519 case YY_END_OF_BUFFER:
520 {
521 /* Amount of text matched not including the EOB char. */
522 int yy_amount_of_matched_text = (int) (yy_cp - yytext_ptr) - 1;
524 /* Undo the effects of YY_DO_BEFORE_ACTION. */
525 *yy_cp = yy_hold_char;
526 YY_RESTORE_YY_MORE_OFFSET
528 if ( yy_current_buffer->yy_buffer_status == YY_BUFFER_NEW )
529 {
530 /* We're scanning a new file or input source. It's
531 * possible that this happened because the user
532 * just pointed yyin at a new source and called
533 * yylex(). If so, then we have to assure
534 * consistency between yy_current_buffer and our
535 * globals. Here is the right place to do so, because
536 * this is the first action (other than possibly a
537 * back-up) that will match for the new input source.
538 */
539 yy_n_chars = yy_current_buffer->yy_n_chars;
540 yy_current_buffer->yy_input_file = yyin;
541 yy_current_buffer->yy_buffer_status = YY_BUFFER_NORMAL;
542 }
544 /* Note that here we test for yy_c_buf_p "<=" to the position
545 * of the first EOB in the buffer, since yy_c_buf_p will
546 * already have been incremented past the NUL character
547 * (since all states make transitions on EOB to the
548 * end-of-buffer state). Contrast this with the test
549 * in input().
550 */
551 if ( yy_c_buf_p <= &yy_current_buffer->yy_ch_buf[yy_n_chars] )
552 { /* This was really a NUL. */
553 yy_state_type yy_next_state;
555 yy_c_buf_p = yytext_ptr + yy_amount_of_matched_text;
557 yy_current_state = yy_get_previous_state();
559 /* Okay, we're now positioned to make the NUL
560 * transition. We couldn't have
561 * yy_get_previous_state() go ahead and do it
562 * for us because it doesn't know how to deal
563 * with the possibility of jamming (and we don't
564 * want to build jamming into it because then it
565 * will run more slowly).
566 */
568 yy_next_state = yy_try_NUL_trans( yy_current_state );
570 yy_bp = yytext_ptr + YY_MORE_ADJ;
572 if ( yy_next_state )
573 {
574 /* Consume the NUL. */
575 yy_cp = ++yy_c_buf_p;
576 yy_current_state = yy_next_state;
577 goto yy_match;
578 }
580 else
581 {
582 %% code to do back-up for compressed tables and set up yy_cp goes here
583 goto yy_find_action;
584 }
585 }
587 else switch ( yy_get_next_buffer() )
588 {
589 case EOB_ACT_END_OF_FILE:
590 {
591 yy_did_buffer_switch_on_eof = 0;
593 if ( yywrap() )
594 {
595 /* Note: because we've taken care in
596 * yy_get_next_buffer() to have set up
597 * yytext, we can now set up
598 * yy_c_buf_p so that if some total
599 * hoser (like flex itself) wants to
600 * call the scanner after we return the
601 * YY_NULL, it'll still work - another
602 * YY_NULL will get returned.
603 */
604 yy_c_buf_p = yytext_ptr + YY_MORE_ADJ;
606 yy_act = YY_STATE_EOF(YY_START);
607 goto do_action;
608 }
610 else
611 {
612 if ( ! yy_did_buffer_switch_on_eof )
613 YY_NEW_FILE;
614 }
615 break;
616 }
618 case EOB_ACT_CONTINUE_SCAN:
619 yy_c_buf_p =
620 yytext_ptr + yy_amount_of_matched_text;
622 yy_current_state = yy_get_previous_state();
624 yy_cp = yy_c_buf_p;
625 yy_bp = yytext_ptr + YY_MORE_ADJ;
626 goto yy_match;
628 case EOB_ACT_LAST_MATCH:
629 yy_c_buf_p =
630 &yy_current_buffer->yy_ch_buf[yy_n_chars];
632 yy_current_state = yy_get_previous_state();
634 yy_cp = yy_c_buf_p;
635 yy_bp = yytext_ptr + YY_MORE_ADJ;
636 goto yy_find_action;
637 }
638 break;
639 }
641 default:
642 YY_FATAL_ERROR(
643 "fatal flex scanner internal error--no action found" );
644 } /* end of action switch */
645 } /* end of scanning one token */
646 } /* end of yylex */
648 %+
649 yyFlexLexer::yyFlexLexer( istream* arg_yyin, ostream* arg_yyout )
650 {
651 yyin = arg_yyin;
652 yyout = arg_yyout;
653 yy_c_buf_p = 0;
654 yy_init = 1;
655 yy_start = 0;
656 yy_flex_debug = 0;
657 yylineno = 1; // this will only get updated if %option yylineno
659 yy_did_buffer_switch_on_eof = 0;
661 yy_looking_for_trail_begin = 0;
662 yy_more_flag = 0;
663 yy_more_len = 0;
664 yy_more_offset = yy_prev_more_offset = 0;
666 yy_start_stack_ptr = yy_start_stack_depth = 0;
667 yy_start_stack = 0;
669 yy_current_buffer = 0;
671 #ifdef YY_USES_REJECT
672 yy_state_buf = new yy_state_type[YY_BUF_SIZE + 2];
673 #else
674 yy_state_buf = 0;
675 #endif
676 }
678 yyFlexLexer::~yyFlexLexer()
679 {
680 delete yy_state_buf;
681 yy_delete_buffer( yy_current_buffer );
682 }
684 void yyFlexLexer::switch_streams( istream* new_in, ostream* new_out )
685 {
686 if ( new_in )
687 {
688 yy_delete_buffer( yy_current_buffer );
689 yy_switch_to_buffer( yy_create_buffer( new_in, YY_BUF_SIZE ) );
690 }
692 if ( new_out )
693 yyout = new_out;
694 }
696 #ifdef YY_INTERACTIVE
697 int yyFlexLexer::LexerInput( char* buf, int /* max_size */ )
698 #else
699 int yyFlexLexer::LexerInput( char* buf, int max_size )
700 #endif
701 {
702 if ( yyin->eof() || yyin->fail() )
703 return 0;
705 #ifdef YY_INTERACTIVE
706 yyin->get( buf[0] );
708 if ( yyin->eof() )
709 return 0;
711 if ( yyin->bad() )
712 return -1;
714 return 1;
716 #else
717 (void) yyin->read( buf, max_size );
719 if ( yyin->bad() )
720 return -1;
721 else
722 return yyin->gcount();
723 #endif
724 }
726 void yyFlexLexer::LexerOutput( const char* buf, int size )
727 {
728 (void) yyout->write( buf, size );
729 }
730 %*
732 /* yy_get_next_buffer - try to read in a new buffer
733 *
734 * Returns a code representing an action:
735 * EOB_ACT_LAST_MATCH -
736 * EOB_ACT_CONTINUE_SCAN - continue scanning from current position
737 * EOB_ACT_END_OF_FILE - end of file
738 */
740 %-
741 static int yy_get_next_buffer()
742 %+
743 int yyFlexLexer::yy_get_next_buffer()
744 %*
745 {
746 register char *dest = yy_current_buffer->yy_ch_buf;
747 register char *source = yytext_ptr;
748 register int number_to_move, i;
749 int ret_val;
751 if ( yy_c_buf_p > &yy_current_buffer->yy_ch_buf[yy_n_chars + 1] )
752 YY_FATAL_ERROR(
753 "fatal flex scanner internal error--end of buffer missed" );
755 if ( yy_current_buffer->yy_fill_buffer == 0 )
756 { /* Don't try to fill the buffer, so this is an EOF. */
757 if ( yy_c_buf_p - yytext_ptr - YY_MORE_ADJ == 1 )
758 {
759 /* We matched a single character, the EOB, so
760 * treat this as a final EOF.
761 */
762 return EOB_ACT_END_OF_FILE;
763 }
765 else
766 {
767 /* We matched some text prior to the EOB, first
768 * process it.
769 */
770 return EOB_ACT_LAST_MATCH;
771 }
772 }
774 /* Try to read more data. */
776 /* First move last chars to start of buffer. */
777 number_to_move = (int) (yy_c_buf_p - yytext_ptr) - 1;
779 for ( i = 0; i < number_to_move; ++i )
780 *(dest++) = *(source++);
782 if ( yy_current_buffer->yy_buffer_status == YY_BUFFER_EOF_PENDING )
783 /* don't do the read, it's not guaranteed to return an EOF,
784 * just force an EOF
785 */
786 yy_current_buffer->yy_n_chars = yy_n_chars = 0;
788 else
789 {
790 int num_to_read =
791 yy_current_buffer->yy_buf_size - number_to_move - 1;
793 while ( num_to_read <= 0 )
794 { /* Not enough room in the buffer - grow it. */
795 #ifdef YY_USES_REJECT
796 YY_FATAL_ERROR(
797 "input buffer overflow, can't enlarge buffer because scanner uses REJECT" );
798 #else
800 /* just a shorter name for the current buffer */
801 YY_BUFFER_STATE b = yy_current_buffer;
803 int yy_c_buf_p_offset =
804 (int) (yy_c_buf_p - b->yy_ch_buf);
806 if ( b->yy_is_our_buffer )
807 {
808 int new_size = b->yy_buf_size * 2;
810 if ( new_size <= 0 )
811 b->yy_buf_size += b->yy_buf_size / 8;
812 else
813 b->yy_buf_size *= 2;
815 b->yy_ch_buf = (char *)
816 /* Include room in for 2 EOB chars. */
817 yy_flex_realloc( (void *) b->yy_ch_buf,
818 b->yy_buf_size + 2 );
819 }
820 else
821 /* Can't grow it, we don't own it. */
822 b->yy_ch_buf = 0;
824 if ( ! b->yy_ch_buf )
825 YY_FATAL_ERROR(
826 "fatal error - scanner input buffer overflow" );
828 yy_c_buf_p = &b->yy_ch_buf[yy_c_buf_p_offset];
830 num_to_read = yy_current_buffer->yy_buf_size -
831 number_to_move - 1;
832 #endif
833 }
835 if ( num_to_read > YY_READ_BUF_SIZE )
836 num_to_read = YY_READ_BUF_SIZE;
838 /* Read in more data. */
839 YY_INPUT( (&yy_current_buffer->yy_ch_buf[number_to_move]),
840 yy_n_chars, num_to_read );
842 yy_current_buffer->yy_n_chars = yy_n_chars;
843 }
845 if ( yy_n_chars == 0 )
846 {
847 if ( number_to_move == YY_MORE_ADJ )
848 {
849 ret_val = EOB_ACT_END_OF_FILE;
850 yyrestart( yyin );
851 }
853 else
854 {
855 ret_val = EOB_ACT_LAST_MATCH;
856 yy_current_buffer->yy_buffer_status =
857 YY_BUFFER_EOF_PENDING;
858 }
859 }
861 else
862 ret_val = EOB_ACT_CONTINUE_SCAN;
864 yy_n_chars += number_to_move;
865 yy_current_buffer->yy_ch_buf[yy_n_chars] = YY_END_OF_BUFFER_CHAR;
866 yy_current_buffer->yy_ch_buf[yy_n_chars + 1] = YY_END_OF_BUFFER_CHAR;
868 yytext_ptr = &yy_current_buffer->yy_ch_buf[0];
870 return ret_val;
871 }
874 /* yy_get_previous_state - get the state just before the EOB char was reached */
876 %-
877 static yy_state_type yy_get_previous_state()
878 %+
879 yy_state_type yyFlexLexer::yy_get_previous_state()
880 %*
881 {
882 register yy_state_type yy_current_state;
883 register char *yy_cp;
885 %% code to get the start state into yy_current_state goes here
887 for ( yy_cp = yytext_ptr + YY_MORE_ADJ; yy_cp < yy_c_buf_p; ++yy_cp )
888 {
889 %% code to find the next state goes here
890 }
892 return yy_current_state;
893 }
896 /* yy_try_NUL_trans - try to make a transition on the NUL character
897 *
898 * synopsis
899 * next_state = yy_try_NUL_trans( current_state );
900 */
902 %-
903 #ifdef YY_USE_PROTOS
904 static yy_state_type yy_try_NUL_trans( yy_state_type yy_current_state )
905 #else
906 static yy_state_type yy_try_NUL_trans( yy_current_state )
907 yy_state_type yy_current_state;
908 #endif
909 %+
910 yy_state_type yyFlexLexer::yy_try_NUL_trans( yy_state_type yy_current_state )
911 %*
912 {
913 register int yy_is_jam;
914 %% code to find the next state, and perhaps do backing up, goes here
916 return yy_is_jam ? 0 : yy_current_state;
917 }
920 %-
921 #ifndef YY_NO_UNPUT
922 #ifdef YY_USE_PROTOS
923 static void yyunput( int c, register char *yy_bp )
924 #else
925 static void yyunput( c, yy_bp )
926 int c;
927 register char *yy_bp;
928 #endif
929 %+
930 void yyFlexLexer::yyunput( int c, register char* yy_bp )
931 %*
932 {
933 register char *yy_cp = yy_c_buf_p;
935 /* undo effects of setting up yytext */
936 *yy_cp = yy_hold_char;
938 if ( yy_cp < yy_current_buffer->yy_ch_buf + 2 )
939 { /* need to shift things up to make room */
940 /* +2 for EOB chars. */
941 register int number_to_move = yy_n_chars + 2;
942 register char *dest = &yy_current_buffer->yy_ch_buf[
943 yy_current_buffer->yy_buf_size + 2];
944 register char *source =
945 &yy_current_buffer->yy_ch_buf[number_to_move];
947 while ( source > yy_current_buffer->yy_ch_buf )
948 *--dest = *--source;
950 yy_cp += (int) (dest - source);
951 yy_bp += (int) (dest - source);
952 yy_current_buffer->yy_n_chars =
953 yy_n_chars = yy_current_buffer->yy_buf_size;
955 if ( yy_cp < yy_current_buffer->yy_ch_buf + 2 )
956 YY_FATAL_ERROR( "flex scanner push-back overflow" );
957 }
959 *--yy_cp = (char) c;
961 %% update yylineno here
963 yytext_ptr = yy_bp;
964 yy_hold_char = *yy_cp;
965 yy_c_buf_p = yy_cp;
966 }
967 %-
968 #endif /* ifndef YY_NO_UNPUT */
969 %*
972 %-
973 #ifdef __cplusplus
974 static int yyinput()
975 #else
976 static int input()
977 #endif
978 %+
979 int yyFlexLexer::yyinput()
980 %*
981 {
982 int c;
984 *yy_c_buf_p = yy_hold_char;
986 if ( *yy_c_buf_p == YY_END_OF_BUFFER_CHAR )
987 {
988 /* yy_c_buf_p now points to the character we want to return.
989 * If this occurs *before* the EOB characters, then it's a
990 * valid NUL; if not, then we've hit the end of the buffer.
991 */
992 if ( yy_c_buf_p < &yy_current_buffer->yy_ch_buf[yy_n_chars] )
993 /* This was really a NUL. */
994 *yy_c_buf_p = '\0';
996 else
997 { /* need more input */
998 int offset = yy_c_buf_p - yytext_ptr;
999 ++yy_c_buf_p;
1001 switch ( yy_get_next_buffer() )
1002 {
1003 case EOB_ACT_LAST_MATCH:
1004 /* This happens because yy_g_n_b()
1005 * sees that we've accumulated a
1006 * token and flags that we need to
1007 * try matching the token before
1008 * proceeding. But for input(),
1009 * there's no matching to consider.
1010 * So convert the EOB_ACT_LAST_MATCH
1011 * to EOB_ACT_END_OF_FILE.
1012 */
1014 /* Reset buffer status. */
1015 yyrestart( yyin );
1017 /* fall through */
1019 case EOB_ACT_END_OF_FILE:
1020 {
1021 if ( yywrap() )
1022 return EOF;
1024 if ( ! yy_did_buffer_switch_on_eof )
1025 YY_NEW_FILE;
1026 #ifdef __cplusplus
1027 return yyinput();
1028 #else
1029 return input();
1030 #endif
1031 }
1033 case EOB_ACT_CONTINUE_SCAN:
1034 yy_c_buf_p = yytext_ptr + offset;
1035 break;
1036 }
1037 }
1038 }
1040 c = *(unsigned char *) yy_c_buf_p; /* cast for 8-bit char's */
1041 *yy_c_buf_p = '\0'; /* preserve yytext */
1042 yy_hold_char = *++yy_c_buf_p;
1044 %% update BOL and yylineno
1046 return c;
1047 }
1050 %-
1051 #ifdef YY_USE_PROTOS
1052 void yyrestart( FILE *input_file )
1053 #else
1054 void yyrestart( input_file )
1055 FILE *input_file;
1056 #endif
1057 %+
1058 void yyFlexLexer::yyrestart( istream* input_file )
1059 %*
1060 {
1061 if ( ! yy_current_buffer )
1062 yy_current_buffer = yy_create_buffer( yyin, YY_BUF_SIZE );
1064 yy_init_buffer( yy_current_buffer, input_file );
1065 yy_load_buffer_state();
1066 }
1069 %-
1070 #ifdef YY_USE_PROTOS
1071 void yy_switch_to_buffer( YY_BUFFER_STATE new_buffer )
1072 #else
1073 void yy_switch_to_buffer( new_buffer )
1074 YY_BUFFER_STATE new_buffer;
1075 #endif
1076 %+
1077 void yyFlexLexer::yy_switch_to_buffer( YY_BUFFER_STATE new_buffer )
1078 %*
1079 {
1080 if ( yy_current_buffer == new_buffer )
1081 return;
1083 if ( yy_current_buffer )
1084 {
1085 /* Flush out information for old buffer. */
1086 *yy_c_buf_p = yy_hold_char;
1087 yy_current_buffer->yy_buf_pos = yy_c_buf_p;
1088 yy_current_buffer->yy_n_chars = yy_n_chars;
1089 }
1091 yy_current_buffer = new_buffer;
1092 yy_load_buffer_state();
1094 /* We don't actually know whether we did this switch during
1095 * EOF (yywrap()) processing, but the only time this flag
1096 * is looked at is after yywrap() is called, so it's safe
1097 * to go ahead and always set it.
1098 */
1099 yy_did_buffer_switch_on_eof = 1;
1100 }
1103 %-
1104 #ifdef YY_USE_PROTOS
1105 void yy_load_buffer_state( void )
1106 #else
1107 void yy_load_buffer_state()
1108 #endif
1109 %+
1110 void yyFlexLexer::yy_load_buffer_state()
1111 %*
1112 {
1113 yy_n_chars = yy_current_buffer->yy_n_chars;
1114 yytext_ptr = yy_c_buf_p = yy_current_buffer->yy_buf_pos;
1115 yyin = yy_current_buffer->yy_input_file;
1116 yy_hold_char = *yy_c_buf_p;
1117 }
1120 %-
1121 #ifdef YY_USE_PROTOS
1122 YY_BUFFER_STATE yy_create_buffer( FILE *file, int size )
1123 #else
1124 YY_BUFFER_STATE yy_create_buffer( file, size )
1125 FILE *file;
1126 int size;
1127 #endif
1128 %+
1129 YY_BUFFER_STATE yyFlexLexer::yy_create_buffer( istream* file, int size )
1130 %*
1131 {
1132 YY_BUFFER_STATE b;
1134 b = (YY_BUFFER_STATE) yy_flex_alloc( sizeof( struct yy_buffer_state ) );
1135 if ( ! b )
1136 YY_FATAL_ERROR( "out of dynamic memory in yy_create_buffer()" );
1138 b->yy_buf_size = size;
1140 /* yy_ch_buf has to be 2 characters longer than the size given because
1141 * we need to put in 2 end-of-buffer characters.
1142 */
1143 b->yy_ch_buf = (char *) yy_flex_alloc( b->yy_buf_size + 2 );
1144 if ( ! b->yy_ch_buf )
1145 YY_FATAL_ERROR( "out of dynamic memory in yy_create_buffer()" );
1147 b->yy_is_our_buffer = 1;
1149 yy_init_buffer( b, file );
1151 return b;
1152 }
1155 %-
1156 #ifdef YY_USE_PROTOS
1157 void yy_delete_buffer( YY_BUFFER_STATE b )
1158 #else
1159 void yy_delete_buffer( b )
1160 YY_BUFFER_STATE b;
1161 #endif
1162 %+
1163 void yyFlexLexer::yy_delete_buffer( YY_BUFFER_STATE b )
1164 %*
1165 {
1166 if ( ! b )
1167 return;
1169 if ( b == yy_current_buffer )
1170 yy_current_buffer = (YY_BUFFER_STATE) 0;
1172 if ( b->yy_is_our_buffer )
1173 yy_flex_free( (void *) b->yy_ch_buf );
1175 yy_flex_free( (void *) b );
1176 }
1179 %-
1180 #ifdef YY_USE_PROTOS
1181 void yy_init_buffer( YY_BUFFER_STATE b, FILE *file )
1182 #else
1183 void yy_init_buffer( b, file )
1184 YY_BUFFER_STATE b;
1185 FILE *file;
1186 #endif
1188 %+
1189 extern "C" int isatty YY_PROTO(( int ));
1190 void yyFlexLexer::yy_init_buffer( YY_BUFFER_STATE b, istream* file )
1191 %*
1193 {
1194 yy_flush_buffer( b );
1196 b->yy_input_file = file;
1197 b->yy_fill_buffer = 1;
1199 %-
1200 #if YY_ALWAYS_INTERACTIVE
1201 b->yy_is_interactive = 1;
1202 #else
1203 #if YY_NEVER_INTERACTIVE
1204 b->yy_is_interactive = 0;
1205 #else
1206 b->yy_is_interactive = file ? (isatty( fileno(file) ) > 0) : 0;
1207 #endif
1208 #endif
1209 %+
1210 b->yy_is_interactive = 0;
1211 %*
1212 }
1215 %-
1216 #ifdef YY_USE_PROTOS
1217 void yy_flush_buffer( YY_BUFFER_STATE b )
1218 #else
1219 void yy_flush_buffer( b )
1220 YY_BUFFER_STATE b;
1221 #endif
1223 %+
1224 void yyFlexLexer::yy_flush_buffer( YY_BUFFER_STATE b )
1225 %*
1226 {
1227 if ( ! b )
1228 return;
1230 b->yy_n_chars = 0;
1232 /* We always need two end-of-buffer characters. The first causes
1233 * a transition to the end-of-buffer state. The second causes
1234 * a jam in that state.
1235 */
1236 b->yy_ch_buf[0] = YY_END_OF_BUFFER_CHAR;
1237 b->yy_ch_buf[1] = YY_END_OF_BUFFER_CHAR;
1239 b->yy_buf_pos = &b->yy_ch_buf[0];
1241 b->yy_at_bol = 1;
1242 b->yy_buffer_status = YY_BUFFER_NEW;
1244 if ( b == yy_current_buffer )
1245 yy_load_buffer_state();
1246 }
1247 %*
1250 #ifndef YY_NO_SCAN_BUFFER
1251 %-
1252 #ifdef YY_USE_PROTOS
1253 YY_BUFFER_STATE yy_scan_buffer( char *base, yy_size_t size )
1254 #else
1255 YY_BUFFER_STATE yy_scan_buffer( base, size )
1256 char *base;
1257 yy_size_t size;
1258 #endif
1259 {
1260 YY_BUFFER_STATE b;
1262 if ( size < 2 ||
1263 base[size-2] != YY_END_OF_BUFFER_CHAR ||
1264 base[size-1] != YY_END_OF_BUFFER_CHAR )
1265 /* They forgot to leave room for the EOB's. */
1266 return 0;
1268 b = (YY_BUFFER_STATE) yy_flex_alloc( sizeof( struct yy_buffer_state ) );
1269 if ( ! b )
1270 YY_FATAL_ERROR( "out of dynamic memory in yy_scan_buffer()" );
1272 b->yy_buf_size = size - 2; /* "- 2" to take care of EOB's */
1273 b->yy_buf_pos = b->yy_ch_buf = base;
1274 b->yy_is_our_buffer = 0;
1275 b->yy_input_file = 0;
1276 b->yy_n_chars = b->yy_buf_size;
1277 b->yy_is_interactive = 0;
1278 b->yy_at_bol = 1;
1279 b->yy_fill_buffer = 0;
1280 b->yy_buffer_status = YY_BUFFER_NEW;
1282 yy_switch_to_buffer( b );
1284 return b;
1285 }
1286 %*
1287 #endif
1290 #ifndef YY_NO_SCAN_STRING
1291 %-
1292 #ifdef YY_USE_PROTOS
1293 YY_BUFFER_STATE yy_scan_string( yyconst char *yy_str )
1294 #else
1295 YY_BUFFER_STATE yy_scan_string( yy_str )
1296 yyconst char *yy_str;
1297 #endif
1298 {
1299 int len;
1300 for ( len = 0; yy_str[len]; ++len )
1301 ;
1303 return yy_scan_bytes( yy_str, len );
1304 }
1305 %*
1306 #endif
1309 #ifndef YY_NO_SCAN_BYTES
1310 %-
1311 #ifdef YY_USE_PROTOS
1312 YY_BUFFER_STATE yy_scan_bytes( yyconst char *bytes, int len )
1313 #else
1314 YY_BUFFER_STATE yy_scan_bytes( bytes, len )
1315 yyconst char *bytes;
1316 int len;
1317 #endif
1318 {
1319 YY_BUFFER_STATE b;
1320 char *buf;
1321 yy_size_t n;
1322 int i;
1324 /* Get memory for full buffer, including space for trailing EOB's. */
1325 n = len + 2;
1326 buf = (char *) yy_flex_alloc( n );
1327 if ( ! buf )
1328 YY_FATAL_ERROR( "out of dynamic memory in yy_scan_bytes()" );
1330 for ( i = 0; i < len; ++i )
1331 buf[i] = bytes[i];
1333 buf[len] = buf[len+1] = YY_END_OF_BUFFER_CHAR;
1335 b = yy_scan_buffer( buf, n );
1336 if ( ! b )
1337 YY_FATAL_ERROR( "bad buffer in yy_scan_bytes()" );
1339 /* It's okay to grow etc. this buffer, and we should throw it
1340 * away when we're done.
1341 */
1342 b->yy_is_our_buffer = 1;
1344 return b;
1345 }
1346 %*
1347 #endif
1350 #ifndef YY_NO_PUSH_STATE
1351 %-
1352 #ifdef YY_USE_PROTOS
1353 static void yy_push_state( int new_state )
1354 #else
1355 static void yy_push_state( new_state )
1356 int new_state;
1357 #endif
1358 %+
1359 void yyFlexLexer::yy_push_state( int new_state )
1360 %*
1361 {
1362 if ( yy_start_stack_ptr >= yy_start_stack_depth )
1363 {
1364 yy_size_t new_size;
1366 yy_start_stack_depth += YY_START_STACK_INCR;
1367 new_size = yy_start_stack_depth * sizeof( int );
1369 if ( ! yy_start_stack )
1370 yy_start_stack = (int *) yy_flex_alloc( new_size );
1372 else
1373 yy_start_stack = (int *) yy_flex_realloc(
1374 (void *) yy_start_stack, new_size );
1376 if ( ! yy_start_stack )
1377 YY_FATAL_ERROR(
1378 "out of memory expanding start-condition stack" );
1379 }
1381 yy_start_stack[yy_start_stack_ptr++] = YY_START;
1383 BEGIN(new_state);
1384 }
1385 #endif
1388 #ifndef YY_NO_POP_STATE
1389 %-
1390 static void yy_pop_state()
1391 %+
1392 void yyFlexLexer::yy_pop_state()
1393 %*
1394 {
1395 if ( --yy_start_stack_ptr < 0 )
1396 YY_FATAL_ERROR( "start-condition stack underflow" );
1398 BEGIN(yy_start_stack[yy_start_stack_ptr]);
1399 }
1400 #endif
1403 #ifndef YY_NO_TOP_STATE
1404 %-
1405 static int yy_top_state()
1406 %+
1407 int yyFlexLexer::yy_top_state()
1408 %*
1409 {
1410 return yy_start_stack[yy_start_stack_ptr - 1];
1411 }
1412 #endif
1414 #ifndef YY_EXIT_FAILURE
1415 #define YY_EXIT_FAILURE 2
1416 #endif
1418 %-
1419 #ifdef YY_USE_PROTOS
1420 static void yy_fatal_error( yyconst char msg[] )
1421 #else
1422 static void yy_fatal_error( msg )
1423 char msg[];
1424 #endif
1425 {
1426 (void) fprintf( stderr, "%s\n", msg );
1427 exit( YY_EXIT_FAILURE );
1428 }
1430 %+
1432 void yyFlexLexer::LexerError( yyconst char msg[] )
1433 {
1434 cerr << msg << '\n';
1435 exit( YY_EXIT_FAILURE );
1436 }
1437 %*
1440 /* Redefine yyless() so it works in section 3 code. */
1442 #undef yyless
1443 #define yyless(n) \
1444 do \
1445 { \
1446 /* Undo effects of setting up yytext. */ \
1447 yytext[yyleng] = yy_hold_char; \
1448 yy_c_buf_p = yytext + n; \
1449 yy_hold_char = *yy_c_buf_p; \
1450 *yy_c_buf_p = '\0'; \
1451 yyleng = n; \
1452 } \
1453 while ( 0 )
1456 /* Internal utility routines. */
1458 #ifndef yytext_ptr
1459 #ifdef YY_USE_PROTOS
1460 static void yy_flex_strncpy( char *s1, yyconst char *s2, int n )
1461 #else
1462 static void yy_flex_strncpy( s1, s2, n )
1463 char *s1;
1464 yyconst char *s2;
1465 int n;
1466 #endif
1467 {
1468 register int i;
1469 for ( i = 0; i < n; ++i )
1470 s1[i] = s2[i];
1471 }
1472 #endif
1474 #ifdef YY_NEED_STRLEN
1475 #ifdef YY_USE_PROTOS
1476 static int yy_flex_strlen( yyconst char *s )
1477 #else
1478 static int yy_flex_strlen( s )
1479 yyconst char *s;
1480 #endif
1481 {
1482 register int n;
1483 for ( n = 0; s[n]; ++n )
1484 ;
1486 return n;
1487 }
1488 #endif
1491 #ifdef YY_USE_PROTOS
1492 static void *yy_flex_alloc( yy_size_t size )
1493 #else
1494 static void *yy_flex_alloc( size )
1495 yy_size_t size;
1496 #endif
1497 {
1498 return (void *) malloc( size );
1499 }
1501 #ifdef YY_USE_PROTOS
1502 static void *yy_flex_realloc( void *ptr, yy_size_t size )
1503 #else
1504 static void *yy_flex_realloc( ptr, size )
1505 void *ptr;
1506 yy_size_t size;
1507 #endif
1508 {
1509 /* The cast to (char *) in the following accommodates both
1510 * implementations that use char* generic pointers, and those
1511 * that use void* generic pointers. It works with the latter
1512 * because both ANSI C and C++ allow castless assignment from
1513 * any pointer type to void*, and deal with argument conversions
1514 * as though doing an assignment.
1515 */
1516 return (void *) realloc( (char *) ptr, size );
1517 }
1519 #ifdef YY_USE_PROTOS
1520 static void yy_flex_free( void *ptr )
1521 #else
1522 static void yy_flex_free( ptr )
1523 void *ptr;
1524 #endif
1525 {
1526 free( ptr );
1527 }
1529 #if YY_MAIN
1530 int main()
1531 {
1532 yylex();
1533 return 0;
1534 }
1535 #endif