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1.1 ohara 1: #line 2 "calclex.c"
2: /* A lexical scanner generated by flex */
3:
4: /* Scanner skeleton version:
5: * $Header: /home/daffy/u0/vern/flex/RCS/flex.skl,v 2.91 96/09/10 16:58:48 vern Exp $
6: * $FreeBSD: src/usr.bin/lex/flex.skl,v 1.4 1999/10/27 07:56:44 obrien Exp $
7: */
8:
9: #define FLEX_SCANNER
10: #define YY_FLEX_MAJOR_VERSION 2
11: #define YY_FLEX_MINOR_VERSION 5
12:
13: #include <stdio.h>
14:
15:
16: /* cfront 1.2 defines "c_plusplus" instead of "__cplusplus" */
17: #ifdef c_plusplus
18: #ifndef __cplusplus
19: #define __cplusplus
20: #endif
21: #endif
22:
23:
24: #ifdef __cplusplus
25:
26: #include <stdlib.h>
27: #include <unistd.h>
28:
29: /* Use prototypes in function declarations. */
30: #define YY_USE_PROTOS
31:
32: /* The "const" storage-class-modifier is valid. */
33: #define YY_USE_CONST
34:
35: #else /* ! __cplusplus */
36:
37: #if __STDC__
38:
39: #define YY_USE_PROTOS
40: #define YY_USE_CONST
41:
42: #endif /* __STDC__ */
43: #endif /* ! __cplusplus */
44:
45: #ifdef __TURBOC__
46: #pragma warn -rch
47: #pragma warn -use
48: #include <io.h>
49: #include <stdlib.h>
50: #define YY_USE_CONST
51: #define YY_USE_PROTOS
52: #endif
53:
54: #ifdef YY_USE_CONST
55: #define yyconst const
56: #else
57: #define yyconst
58: #endif
59:
60:
61: #ifdef YY_USE_PROTOS
62: #define YY_PROTO(proto) proto
63: #else
64: #define YY_PROTO(proto) ()
65: #endif
66:
67: /* Returned upon end-of-file. */
68: #define YY_NULL 0
69:
70: /* Promotes a possibly negative, possibly signed char to an unsigned
71: * integer for use as an array index. If the signed char is negative,
72: * we want to instead treat it as an 8-bit unsigned char, hence the
73: * double cast.
74: */
75: #define YY_SC_TO_UI(c) ((unsigned int) (unsigned char) c)
76:
77: /* Enter a start condition. This macro really ought to take a parameter,
78: * but we do it the disgusting crufty way forced on us by the ()-less
79: * definition of BEGIN.
80: */
81: #define BEGIN yy_start = 1 + 2 *
82:
83: /* Translate the current start state into a value that can be later handed
84: * to BEGIN to return to the state. The YYSTATE alias is for lex
85: * compatibility.
86: */
87: #define YY_START ((yy_start - 1) / 2)
88: #define YYSTATE YY_START
89:
90: /* Action number for EOF rule of a given start state. */
91: #define YY_STATE_EOF(state) (YY_END_OF_BUFFER + state + 1)
92:
93: /* Special action meaning "start processing a new file". */
94: #define YY_NEW_FILE yyrestart( yyin )
95:
96: #define YY_END_OF_BUFFER_CHAR 0
97:
98: /* Size of default input buffer. */
99: #define YY_BUF_SIZE 16384
100:
101: typedef struct yy_buffer_state *YY_BUFFER_STATE;
102:
103: extern int yyleng;
104: extern FILE *yyin, *yyout;
105:
106: #define EOB_ACT_CONTINUE_SCAN 0
107: #define EOB_ACT_END_OF_FILE 1
108: #define EOB_ACT_LAST_MATCH 2
109:
110: /* The funky do-while in the following #define is used to turn the definition
111: * int a single C statement (which needs a semi-colon terminator). This
112: * avoids problems with code like:
113: *
114: * if ( condition_holds )
115: * yyless( 5 );
116: * else
117: * do_something_else();
118: *
119: * Prior to using the do-while the compiler would get upset at the
120: * "else" because it interpreted the "if" statement as being all
121: * done when it reached the ';' after the yyless() call.
122: */
123:
124: /* Return all but the first 'n' matched characters back to the input stream. */
125:
126: #define yyless(n) \
127: do \
128: { \
129: /* Undo effects of setting up yytext. */ \
130: *yy_cp = yy_hold_char; \
131: YY_RESTORE_YY_MORE_OFFSET \
132: yy_c_buf_p = yy_cp = yy_bp + n - YY_MORE_ADJ; \
133: YY_DO_BEFORE_ACTION; /* set up yytext again */ \
134: } \
135: while ( 0 )
136:
137: #define unput(c) yyunput( c, yytext_ptr )
138:
139: /* The following is because we cannot portably get our hands on size_t
140: * (without autoconf's help, which isn't available because we want
141: * flex-generated scanners to compile on their own).
142: */
143: typedef unsigned int yy_size_t;
144:
145:
146: struct yy_buffer_state
147: {
148: FILE *yy_input_file;
149:
150: char *yy_ch_buf; /* input buffer */
151: char *yy_buf_pos; /* current position in input buffer */
152:
153: /* Size of input buffer in bytes, not including room for EOB
154: * characters.
155: */
156: yy_size_t yy_buf_size;
157:
158: /* Number of characters read into yy_ch_buf, not including EOB
159: * characters.
160: */
161: int yy_n_chars;
162:
163: /* Whether we "own" the buffer - i.e., we know we created it,
164: * and can realloc() it to grow it, and should free() it to
165: * delete it.
166: */
167: int yy_is_our_buffer;
168:
169: /* Whether this is an "interactive" input source; if so, and
170: * if we're using stdio for input, then we want to use getc()
171: * instead of fread(), to make sure we stop fetching input after
172: * each newline.
173: */
174: int yy_is_interactive;
175:
176: /* Whether we're considered to be at the beginning of a line.
177: * If so, '^' rules will be active on the next match, otherwise
178: * not.
179: */
180: int yy_at_bol;
181:
182: /* Whether to try to fill the input buffer when we reach the
183: * end of it.
184: */
185: int yy_fill_buffer;
186:
187: int yy_buffer_status;
188: #define YY_BUFFER_NEW 0
189: #define YY_BUFFER_NORMAL 1
190: /* When an EOF's been seen but there's still some text to process
191: * then we mark the buffer as YY_EOF_PENDING, to indicate that we
192: * shouldn't try reading from the input source any more. We might
193: * still have a bunch of tokens to match, though, because of
194: * possible backing-up.
195: *
196: * When we actually see the EOF, we change the status to "new"
197: * (via yyrestart()), so that the user can continue scanning by
198: * just pointing yyin at a new input file.
199: */
200: #define YY_BUFFER_EOF_PENDING 2
201: };
202:
203: static YY_BUFFER_STATE yy_current_buffer = 0;
204:
205: /* We provide macros for accessing buffer states in case in the
206: * future we want to put the buffer states in a more general
207: * "scanner state".
208: */
209: #define YY_CURRENT_BUFFER yy_current_buffer
210:
211:
212: /* yy_hold_char holds the character lost when yytext is formed. */
213: static char yy_hold_char;
214:
215: static int yy_n_chars; /* number of characters read into yy_ch_buf */
216:
217:
218: int yyleng;
219:
220: /* Points to current character in buffer. */
221: static char *yy_c_buf_p = (char *) 0;
222: static int yy_init = 1; /* whether we need to initialize */
223: static int yy_start = 0; /* start state number */
224:
225: /* Flag which is used to allow yywrap()'s to do buffer switches
226: * instead of setting up a fresh yyin. A bit of a hack ...
227: */
228: static int yy_did_buffer_switch_on_eof;
229:
230: void yyrestart YY_PROTO(( FILE *input_file ));
231:
232: void yy_switch_to_buffer YY_PROTO(( YY_BUFFER_STATE new_buffer ));
233: void yy_load_buffer_state YY_PROTO(( void ));
234: YY_BUFFER_STATE yy_create_buffer YY_PROTO(( FILE *file, int size ));
235: void yy_delete_buffer YY_PROTO(( YY_BUFFER_STATE b ));
236: void yy_init_buffer YY_PROTO(( YY_BUFFER_STATE b, FILE *file ));
237: void yy_flush_buffer YY_PROTO(( YY_BUFFER_STATE b ));
238: #define YY_FLUSH_BUFFER yy_flush_buffer( yy_current_buffer )
239:
240: YY_BUFFER_STATE yy_scan_buffer YY_PROTO(( char *base, yy_size_t size ));
241: YY_BUFFER_STATE yy_scan_string YY_PROTO(( yyconst char *yy_str ));
242: YY_BUFFER_STATE yy_scan_bytes YY_PROTO(( yyconst char *bytes, int len ));
243:
244: static void *yy_flex_alloc YY_PROTO(( yy_size_t ));
245: static void *yy_flex_realloc YY_PROTO(( void *, yy_size_t ));
246: static void yy_flex_free YY_PROTO(( void * ));
247:
248: #define yy_new_buffer yy_create_buffer
249:
250: #define yy_set_interactive(is_interactive) \
251: { \
252: if ( ! yy_current_buffer ) \
253: yy_current_buffer = yy_create_buffer( yyin, YY_BUF_SIZE ); \
254: yy_current_buffer->yy_is_interactive = is_interactive; \
255: }
256:
257: #define yy_set_bol(at_bol) \
258: { \
259: if ( ! yy_current_buffer ) \
260: yy_current_buffer = yy_create_buffer( yyin, YY_BUF_SIZE ); \
261: yy_current_buffer->yy_at_bol = at_bol; \
262: }
263:
264: #define YY_AT_BOL() (yy_current_buffer->yy_at_bol)
265:
266: typedef unsigned char YY_CHAR;
267: FILE *yyin = (FILE *) 0, *yyout = (FILE *) 0;
268: typedef int yy_state_type;
269: extern char *yytext;
270: #define yytext_ptr yytext
271:
272: static yy_state_type yy_get_previous_state YY_PROTO(( void ));
273: static yy_state_type yy_try_NUL_trans YY_PROTO(( yy_state_type current_state ));
274: static int yy_get_next_buffer YY_PROTO(( void ));
275: static void yy_fatal_error YY_PROTO(( yyconst char msg[] ));
276:
277: /* Done after the current pattern has been matched and before the
278: * corresponding action - sets up yytext.
279: */
280: #define YY_DO_BEFORE_ACTION \
281: yytext_ptr = yy_bp; \
282: yyleng = (int) (yy_cp - yy_bp); \
283: yy_hold_char = *yy_cp; \
284: *yy_cp = '\0'; \
285: yy_c_buf_p = yy_cp;
286:
287: #define YY_NUM_RULES 19
288: #define YY_END_OF_BUFFER 20
289: static yyconst short int yy_accept[39] =
290: { 0,
291: 0, 0, 20, 18, 1, 2, 7, 6, 7, 18,
292: 16, 16, 2, 7, 7, 7, 16, 17, 18, 18,
293: 11, 6, 5, 6, 14, 16, 0, 12, 8, 10,
294: 9, 13, 16, 17, 3, 15, 4, 0
295: } ;
296:
297: static yyconst int yy_ec[256] =
298: { 0,
299: 1, 1, 1, 1, 1, 1, 1, 1, 2, 3,
300: 1, 2, 1, 1, 1, 1, 1, 1, 1, 1,
301: 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
302: 1, 2, 4, 1, 5, 1, 6, 7, 1, 6,
303: 6, 6, 6, 6, 6, 1, 6, 8, 9, 9,
304: 9, 9, 9, 9, 9, 9, 9, 1, 10, 11,
305: 12, 13, 1, 1, 14, 14, 14, 14, 14, 14,
306: 15, 15, 15, 15, 15, 15, 15, 15, 15, 15,
307: 15, 15, 15, 15, 15, 15, 15, 16, 15, 15,
308: 1, 17, 1, 6, 1, 1, 15, 15, 15, 15,
309:
310: 15, 15, 15, 15, 15, 15, 15, 15, 15, 15,
311: 15, 15, 15, 15, 15, 15, 15, 15, 15, 16,
312: 15, 15, 1, 18, 1, 1, 1, 1, 1, 1,
313: 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
314: 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
315: 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
316: 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
317: 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
318: 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
319: 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
320:
321: 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
322: 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
323: 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
324: 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
325: 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
326: 1, 1, 1, 1, 1
327: } ;
328:
329: static yyconst int yy_meta[19] =
330: { 0,
331: 1, 1, 1, 1, 1, 1, 1, 2, 2, 1,
332: 1, 1, 1, 2, 3, 2, 1, 1
333: } ;
334:
335: static yyconst short int yy_base[43] =
336: { 0,
337: 0, 0, 39, 49, 49, 49, 26, 16, 49, 30,
338: 20, 19, 49, 9, 22, 10, 9, 0, 29, 13,
339: 49, 23, 49, 24, 49, 0, 0, 49, 49, 49,
340: 49, 49, 13, 0, 49, 49, 49, 49, 41, 28,
341: 43, 45
342: } ;
343:
344: static yyconst short int yy_def[43] =
345: { 0,
346: 38, 1, 38, 38, 38, 38, 38, 39, 38, 38,
347: 40, 40, 38, 38, 38, 38, 41, 42, 38, 38,
348: 38, 39, 38, 39, 38, 12, 12, 38, 38, 38,
349: 38, 38, 41, 42, 38, 38, 38, 0, 38, 38,
350: 38, 38
351: } ;
352:
353: static yyconst short int yy_nxt[68] =
354: { 0,
355: 4, 5, 6, 7, 8, 9, 10, 11, 12, 13,
356: 14, 15, 16, 17, 18, 18, 19, 20, 23, 28,
357: 29, 31, 32, 34, 34, 23, 37, 34, 34, 26,
358: 36, 35, 24, 30, 38, 27, 25, 21, 38, 24,
359: 24, 22, 22, 22, 33, 33, 34, 34, 3, 38,
360: 38, 38, 38, 38, 38, 38, 38, 38, 38, 38,
361: 38, 38, 38, 38, 38, 38, 38
362: } ;
363:
364: static yyconst short int yy_chk[68] =
365: { 0,
366: 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
367: 1, 1, 1, 1, 1, 1, 1, 1, 8, 14,
368: 14, 16, 16, 17, 17, 22, 24, 33, 33, 40,
369: 20, 19, 8, 15, 12, 11, 10, 7, 3, 22,
370: 24, 39, 39, 39, 41, 41, 42, 42, 38, 38,
371: 38, 38, 38, 38, 38, 38, 38, 38, 38, 38,
372: 38, 38, 38, 38, 38, 38, 38
373: } ;
374:
375: static yy_state_type yy_last_accepting_state;
376: static char *yy_last_accepting_cpos;
377:
378: /* The intent behind this definition is that it'll catch
379: * any uses of REJECT which flex missed.
380: */
381: #define REJECT reject_used_but_not_detected
382: #define yymore() yymore_used_but_not_detected
383: #define YY_MORE_ADJ 0
384: #define YY_RESTORE_YY_MORE_OFFSET
385: char *yytext;
386: #line 1 "calclex.l"
387: #define INITIAL 0
388: /* Lexical analyzer for calc program.
389:
390: Copyright 2000, 2001 Free Software Foundation, Inc.
391:
392: This file is part of the GNU MP Library.
393:
394: This program is free software; you can redistribute it and/or modify it under
395: the terms of the GNU General Public License as published by the Free Software
396: Foundation; either version 2 of the License, or (at your option) any later
397: version.
398:
399: This program is distributed in the hope that it will be useful, but WITHOUT ANY
400: WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
401: PARTICULAR PURPOSE. See the GNU General Public License for more details.
402:
403: You should have received a copy of the GNU General Public License along with
404: this program; if not, write to the Free Software Foundation, Inc., 59 Temple
405: Place - Suite 330, Boston, MA 02111-1307, USA. */
406: #line 21 "calclex.l"
407: #include "calc-common.h"
408:
409:
410: #if WITH_READLINE
411: /* Let GNU flex use readline. See the calcread.c redefined input() for a
412: way that might work for a standard lex too. */
413: #define YY_INPUT(buf,result,max_size) \
414: result = calc_input (buf, max_size);
415: #endif
416:
417:
418: /* Non-zero when reading the second or subsequent line of an expression,
419: used to give a different prompt when using readline. */
420: int calc_more_input = 0;
421:
422:
423: const struct calc_keywords_t calc_keywords[] = {
424: { "abs", ABS },
425: { "bin", BIN },
426: { "decimal", DECIMAL },
427: { "fib", FIB },
428: { "hex", HEX },
429: { "help", HELP },
430: { "gcd", GCD },
431: { "kron", KRON },
432: { "lcm", LCM },
433: { "lucnum", LUCNUM },
434: { "nextprime", NEXTPRIME },
435: { "powm", POWM },
436: { "quit", QUIT },
437: { "root", ROOT },
438: { "sqrt", SQRT },
439: { NULL }
440: };
441: #line 442 "calclex.c"
442:
443: /* Macros after this point can all be overridden by user definitions in
444: * section 1.
445: */
446:
447: #ifndef YY_SKIP_YYWRAP
448: #ifdef __cplusplus
449: extern "C" int yywrap YY_PROTO(( void ));
450: #else
451: extern int yywrap YY_PROTO(( void ));
452: #endif
453: #endif
454:
455: #ifndef YY_NO_UNPUT
456: static void yyunput YY_PROTO(( int c, char *buf_ptr ));
457: #endif
458:
459: #ifndef yytext_ptr
460: static void yy_flex_strncpy YY_PROTO(( char *, yyconst char *, int ));
461: #endif
462:
463: #ifdef YY_NEED_STRLEN
464: static int yy_flex_strlen YY_PROTO(( yyconst char * ));
465: #endif
466:
467: #ifndef YY_NO_INPUT
468: #ifdef __cplusplus
469: static int yyinput YY_PROTO(( void ));
470: #else
471: static int input YY_PROTO(( void ));
472: #endif
473: #endif
474:
475: #if YY_STACK_USED
476: static int yy_start_stack_ptr = 0;
477: static int yy_start_stack_depth = 0;
478: static int *yy_start_stack = 0;
479: #ifndef YY_NO_PUSH_STATE
480: static void yy_push_state YY_PROTO(( int new_state ));
481: #endif
482: #ifndef YY_NO_POP_STATE
483: static void yy_pop_state YY_PROTO(( void ));
484: #endif
485: #ifndef YY_NO_TOP_STATE
486: static int yy_top_state YY_PROTO(( void ));
487: #endif
488:
489: #else
490: #define YY_NO_PUSH_STATE 1
491: #define YY_NO_POP_STATE 1
492: #define YY_NO_TOP_STATE 1
493: #endif
494:
495: #ifdef YY_MALLOC_DECL
496: YY_MALLOC_DECL
497: #else
498: #if __STDC__
499: #ifndef __cplusplus
500: #include <stdlib.h>
501: #endif
502: #else
503: /* Just try to get by without declaring the routines. This will fail
504: * miserably on non-ANSI systems for which sizeof(size_t) != sizeof(int)
505: * or sizeof(void*) != sizeof(int).
506: */
507: #endif
508: #endif
509:
510: /* Amount of stuff to slurp up with each read. */
511: #ifndef YY_READ_BUF_SIZE
512: #define YY_READ_BUF_SIZE 8192
513: #endif
514:
515: /* Copy whatever the last rule matched to the standard output. */
516:
517: #ifndef ECHO
518: /* This used to be an fputs(), but since the string might contain NUL's,
519: * we now use fwrite().
520: */
521: #define ECHO (void) fwrite( yytext, yyleng, 1, yyout )
522: #endif
523:
524: /* Gets input and stuffs it into "buf". number of characters read, or YY_NULL,
525: * is returned in "result".
526: */
527: #ifndef YY_INPUT
528: #define YY_INPUT(buf,result,max_size) \
529: if ( yy_current_buffer->yy_is_interactive ) \
530: { \
531: int c = '*', n; \
532: for ( n = 0; n < max_size && \
533: (c = getc( yyin )) != EOF && c != '\n'; ++n ) \
534: buf[n] = (char) c; \
535: if ( c == '\n' ) \
536: buf[n++] = (char) c; \
537: if ( c == EOF && ferror( yyin ) ) \
538: YY_FATAL_ERROR( "input in flex scanner failed" ); \
539: result = n; \
540: } \
541: else if ( ((result = fread( buf, 1, max_size, yyin )) == 0) \
542: && ferror( yyin ) ) \
543: YY_FATAL_ERROR( "input in flex scanner failed" );
544: #endif
545:
546: /* No semi-colon after return; correct usage is to write "yyterminate();" -
547: * we don't want an extra ';' after the "return" because that will cause
548: * some compilers to complain about unreachable statements.
549: */
550: #ifndef yyterminate
551: #define yyterminate() return YY_NULL
552: #endif
553:
554: /* Number of entries by which start-condition stack grows. */
555: #ifndef YY_START_STACK_INCR
556: #define YY_START_STACK_INCR 25
557: #endif
558:
559: /* Report a fatal error. */
560: #ifndef YY_FATAL_ERROR
561: #define YY_FATAL_ERROR(msg) yy_fatal_error( msg )
562: #endif
563:
564: /* Default declaration of generated scanner - a define so the user can
565: * easily add parameters.
566: */
567: #ifndef YY_DECL
568: #define YY_DECL int yylex YY_PROTO(( void ))
569: #endif
570:
571: /* Code executed at the beginning of each rule, after yytext and yyleng
572: * have been set up.
573: */
574: #ifndef YY_USER_ACTION
575: #define YY_USER_ACTION
576: #endif
577:
578: /* Code executed at the end of each rule. */
579: #ifndef YY_BREAK
580: #define YY_BREAK break;
581: #endif
582:
583: #define YY_RULE_SETUP \
584: YY_USER_ACTION
585:
586: YY_DECL
587: {
588: register yy_state_type yy_current_state;
589: register char *yy_cp, *yy_bp;
590: register int yy_act;
591:
592: #line 57 "calclex.l"
593:
594:
595: #line 596 "calclex.c"
596:
597: if ( yy_init )
598: {
599: yy_init = 0;
600:
601: #ifdef YY_USER_INIT
602: YY_USER_INIT;
603: #endif
604:
605: if ( ! yy_start )
606: yy_start = 1; /* first start state */
607:
608: if ( ! yyin )
609: yyin = stdin;
610:
611: if ( ! yyout )
612: yyout = stdout;
613:
614: if ( ! yy_current_buffer )
615: yy_current_buffer =
616: yy_create_buffer( yyin, YY_BUF_SIZE );
617:
618: yy_load_buffer_state();
619: }
620:
621: while ( 1 ) /* loops until end-of-file is reached */
622: {
623: yy_cp = yy_c_buf_p;
624:
625: /* Support of yytext. */
626: *yy_cp = yy_hold_char;
627:
628: /* yy_bp points to the position in yy_ch_buf of the start of
629: * the current run.
630: */
631: yy_bp = yy_cp;
632:
633: yy_current_state = yy_start;
634: yy_match:
635: do
636: {
637: register YY_CHAR yy_c = yy_ec[YY_SC_TO_UI(*yy_cp)];
638: if ( yy_accept[yy_current_state] )
639: {
640: yy_last_accepting_state = yy_current_state;
641: yy_last_accepting_cpos = yy_cp;
642: }
643: while ( yy_chk[yy_base[yy_current_state] + yy_c] != yy_current_state )
644: {
645: yy_current_state = (int) yy_def[yy_current_state];
646: if ( yy_current_state >= 39 )
647: yy_c = yy_meta[(unsigned int) yy_c];
648: }
649: yy_current_state = yy_nxt[yy_base[yy_current_state] + (unsigned int) yy_c];
650: ++yy_cp;
651: }
652: while ( yy_base[yy_current_state] != 49 );
653:
654: yy_find_action:
655: yy_act = yy_accept[yy_current_state];
656: if ( yy_act == 0 )
657: { /* have to back up */
658: yy_cp = yy_last_accepting_cpos;
659: yy_current_state = yy_last_accepting_state;
660: yy_act = yy_accept[yy_current_state];
661: }
662:
663: YY_DO_BEFORE_ACTION;
664:
665:
666: do_action: /* This label is used only to access EOF actions. */
667:
668:
669: switch ( yy_act )
670: { /* beginning of action switch */
671: case 0: /* must back up */
672: /* undo the effects of YY_DO_BEFORE_ACTION */
673: *yy_cp = yy_hold_char;
674: yy_cp = yy_last_accepting_cpos;
675: yy_current_state = yy_last_accepting_state;
676: goto yy_find_action;
677:
678: case 1:
679: YY_RULE_SETUP
680: #line 59 "calclex.l"
681: { /* white space is skipped */ }
682: YY_BREAK
683: case 2:
684: YY_RULE_SETUP
685: #line 61 "calclex.l"
686: { /* semicolon or newline separates statements */
687: calc_more_input = 0;
688: return EOS; }
689: YY_BREAK
690: case 3:
691: YY_RULE_SETUP
692: #line 64 "calclex.l"
693: { /* escaped newlines are skipped */ }
694: YY_BREAK
695: case 4:
696: YY_RULE_SETUP
697: #line 67 "calclex.l"
698: {
699: /* comment through to escaped newline is skipped */ }
700: YY_BREAK
701: case 5:
702: YY_RULE_SETUP
703: #line 69 "calclex.l"
704: { /* comment through to newline is a separator */
705: calc_more_input = 0;
706: return EOS; }
707: YY_BREAK
708: case 6:
709: YY_RULE_SETUP
710: #line 72 "calclex.l"
711: { /* comment through to EOF skipped */ }
712: YY_BREAK
713: case 7:
714: YY_RULE_SETUP
715: #line 75 "calclex.l"
716: { return yytext[0]; }
717: YY_BREAK
718: case 8:
719: YY_RULE_SETUP
720: #line 76 "calclex.l"
721: { return LE; }
722: YY_BREAK
723: case 9:
724: YY_RULE_SETUP
725: #line 77 "calclex.l"
726: { return GE; }
727: YY_BREAK
728: case 10:
729: YY_RULE_SETUP
730: #line 78 "calclex.l"
731: { return EQ; }
732: YY_BREAK
733: case 11:
734: YY_RULE_SETUP
735: #line 79 "calclex.l"
736: { return NE; }
737: YY_BREAK
738: case 12:
739: YY_RULE_SETUP
740: #line 80 "calclex.l"
741: { return LSHIFT; }
742: YY_BREAK
743: case 13:
744: YY_RULE_SETUP
745: #line 81 "calclex.l"
746: { return RSHIFT; }
747: YY_BREAK
748: case 14:
749: YY_RULE_SETUP
750: #line 82 "calclex.l"
751: { return LAND; }
752: YY_BREAK
753: case 15:
754: YY_RULE_SETUP
755: #line 83 "calclex.l"
756: { return LOR; }
757: YY_BREAK
758: case 16:
759: YY_RULE_SETUP
760: #line 85 "calclex.l"
761: {
762: yylval.str = yytext;
763: return NUMBER; }
764: YY_BREAK
765: case 17:
766: YY_RULE_SETUP
767: #line 89 "calclex.l"
768: {
769: int i;
770:
771: for (i = 0; calc_keywords[i].name != NULL; i++)
772: if (strcmp (yytext, calc_keywords[i].name) == 0)
773: return calc_keywords[i].value;
774:
775: if (yytext[0] >= 'a' && yytext[0] <= 'z' && yytext[1] == '\0')
776: {
777: yylval.var = yytext[0] - 'a';
778: return VARIABLE;
779: }
780:
781: return BAD;
782: }
783: YY_BREAK
784: case 18:
785: YY_RULE_SETUP
786: #line 105 "calclex.l"
787: { return BAD; }
788: YY_BREAK
789: case 19:
790: YY_RULE_SETUP
791: #line 107 "calclex.l"
792: ECHO;
793: YY_BREAK
794: #line 795 "calclex.c"
795: case YY_STATE_EOF(INITIAL):
796: yyterminate();
797:
798: case YY_END_OF_BUFFER:
799: {
800: /* Amount of text matched not including the EOB char. */
801: int yy_amount_of_matched_text = (int) (yy_cp - yytext_ptr) - 1;
802:
803: /* Undo the effects of YY_DO_BEFORE_ACTION. */
804: *yy_cp = yy_hold_char;
805: YY_RESTORE_YY_MORE_OFFSET
806:
807: if ( yy_current_buffer->yy_buffer_status == YY_BUFFER_NEW )
808: {
809: /* We're scanning a new file or input source. It's
810: * possible that this happened because the user
811: * just pointed yyin at a new source and called
812: * yylex(). If so, then we have to assure
813: * consistency between yy_current_buffer and our
814: * globals. Here is the right place to do so, because
815: * this is the first action (other than possibly a
816: * back-up) that will match for the new input source.
817: */
818: yy_n_chars = yy_current_buffer->yy_n_chars;
819: yy_current_buffer->yy_input_file = yyin;
820: yy_current_buffer->yy_buffer_status = YY_BUFFER_NORMAL;
821: }
822:
823: /* Note that here we test for yy_c_buf_p "<=" to the position
824: * of the first EOB in the buffer, since yy_c_buf_p will
825: * already have been incremented past the NUL character
826: * (since all states make transitions on EOB to the
827: * end-of-buffer state). Contrast this with the test
828: * in input().
829: */
830: if ( yy_c_buf_p <= &yy_current_buffer->yy_ch_buf[yy_n_chars] )
831: { /* This was really a NUL. */
832: yy_state_type yy_next_state;
833:
834: yy_c_buf_p = yytext_ptr + yy_amount_of_matched_text;
835:
836: yy_current_state = yy_get_previous_state();
837:
838: /* Okay, we're now positioned to make the NUL
839: * transition. We couldn't have
840: * yy_get_previous_state() go ahead and do it
841: * for us because it doesn't know how to deal
842: * with the possibility of jamming (and we don't
843: * want to build jamming into it because then it
844: * will run more slowly).
845: */
846:
847: yy_next_state = yy_try_NUL_trans( yy_current_state );
848:
849: yy_bp = yytext_ptr + YY_MORE_ADJ;
850:
851: if ( yy_next_state )
852: {
853: /* Consume the NUL. */
854: yy_cp = ++yy_c_buf_p;
855: yy_current_state = yy_next_state;
856: goto yy_match;
857: }
858:
859: else
860: {
861: yy_cp = yy_c_buf_p;
862: goto yy_find_action;
863: }
864: }
865:
866: else switch ( yy_get_next_buffer() )
867: {
868: case EOB_ACT_END_OF_FILE:
869: {
870: yy_did_buffer_switch_on_eof = 0;
871:
872: if ( yywrap() )
873: {
874: /* Note: because we've taken care in
875: * yy_get_next_buffer() to have set up
876: * yytext, we can now set up
877: * yy_c_buf_p so that if some total
878: * hoser (like flex itself) wants to
879: * call the scanner after we return the
880: * YY_NULL, it'll still work - another
881: * YY_NULL will get returned.
882: */
883: yy_c_buf_p = yytext_ptr + YY_MORE_ADJ;
884:
885: yy_act = YY_STATE_EOF(YY_START);
886: goto do_action;
887: }
888:
889: else
890: {
891: if ( ! yy_did_buffer_switch_on_eof )
892: YY_NEW_FILE;
893: }
894: break;
895: }
896:
897: case EOB_ACT_CONTINUE_SCAN:
898: yy_c_buf_p =
899: yytext_ptr + yy_amount_of_matched_text;
900:
901: yy_current_state = yy_get_previous_state();
902:
903: yy_cp = yy_c_buf_p;
904: yy_bp = yytext_ptr + YY_MORE_ADJ;
905: goto yy_match;
906:
907: case EOB_ACT_LAST_MATCH:
908: yy_c_buf_p =
909: &yy_current_buffer->yy_ch_buf[yy_n_chars];
910:
911: yy_current_state = yy_get_previous_state();
912:
913: yy_cp = yy_c_buf_p;
914: yy_bp = yytext_ptr + YY_MORE_ADJ;
915: goto yy_find_action;
916: }
917: break;
918: }
919:
920: default:
921: YY_FATAL_ERROR(
922: "fatal flex scanner internal error--no action found" );
923: } /* end of action switch */
924: } /* end of scanning one token */
925: } /* end of yylex */
926:
927:
928: /* yy_get_next_buffer - try to read in a new buffer
929: *
930: * Returns a code representing an action:
931: * EOB_ACT_LAST_MATCH -
932: * EOB_ACT_CONTINUE_SCAN - continue scanning from current position
933: * EOB_ACT_END_OF_FILE - end of file
934: */
935:
936: static int yy_get_next_buffer()
937: {
938: register char *dest = yy_current_buffer->yy_ch_buf;
939: register char *source = yytext_ptr;
940: register int number_to_move, i;
941: int ret_val;
942:
943: if ( yy_c_buf_p > &yy_current_buffer->yy_ch_buf[yy_n_chars + 1] )
944: YY_FATAL_ERROR(
945: "fatal flex scanner internal error--end of buffer missed" );
946:
947: if ( yy_current_buffer->yy_fill_buffer == 0 )
948: { /* Don't try to fill the buffer, so this is an EOF. */
949: if ( yy_c_buf_p - yytext_ptr - YY_MORE_ADJ == 1 )
950: {
951: /* We matched a single character, the EOB, so
952: * treat this as a final EOF.
953: */
954: return EOB_ACT_END_OF_FILE;
955: }
956:
957: else
958: {
959: /* We matched some text prior to the EOB, first
960: * process it.
961: */
962: return EOB_ACT_LAST_MATCH;
963: }
964: }
965:
966: /* Try to read more data. */
967:
968: /* First move last chars to start of buffer. */
969: number_to_move = (int) (yy_c_buf_p - yytext_ptr) - 1;
970:
971: for ( i = 0; i < number_to_move; ++i )
972: *(dest++) = *(source++);
973:
974: if ( yy_current_buffer->yy_buffer_status == YY_BUFFER_EOF_PENDING )
975: /* don't do the read, it's not guaranteed to return an EOF,
976: * just force an EOF
977: */
978: yy_current_buffer->yy_n_chars = yy_n_chars = 0;
979:
980: else
981: {
982: int num_to_read =
983: yy_current_buffer->yy_buf_size - number_to_move - 1;
984:
985: while ( num_to_read <= 0 )
986: { /* Not enough room in the buffer - grow it. */
987: #ifdef YY_USES_REJECT
988: YY_FATAL_ERROR(
989: "input buffer overflow, can't enlarge buffer because scanner uses REJECT" );
990: #else
991:
992: /* just a shorter name for the current buffer */
993: YY_BUFFER_STATE b = yy_current_buffer;
994:
995: int yy_c_buf_p_offset =
996: (int) (yy_c_buf_p - b->yy_ch_buf);
997:
998: if ( b->yy_is_our_buffer )
999: {
1000: int new_size = b->yy_buf_size * 2;
1001:
1002: if ( new_size <= 0 )
1003: b->yy_buf_size += b->yy_buf_size / 8;
1004: else
1005: b->yy_buf_size *= 2;
1006:
1007: b->yy_ch_buf = (char *)
1008: /* Include room in for 2 EOB chars. */
1009: yy_flex_realloc( (void *) b->yy_ch_buf,
1010: b->yy_buf_size + 2 );
1011: }
1012: else
1013: /* Can't grow it, we don't own it. */
1014: b->yy_ch_buf = 0;
1015:
1016: if ( ! b->yy_ch_buf )
1017: YY_FATAL_ERROR(
1018: "fatal error - scanner input buffer overflow" );
1019:
1020: yy_c_buf_p = &b->yy_ch_buf[yy_c_buf_p_offset];
1021:
1022: num_to_read = yy_current_buffer->yy_buf_size -
1023: number_to_move - 1;
1024: #endif
1025: }
1026:
1027: if ( num_to_read > YY_READ_BUF_SIZE )
1028: num_to_read = YY_READ_BUF_SIZE;
1029:
1030: /* Read in more data. */
1031: YY_INPUT( (&yy_current_buffer->yy_ch_buf[number_to_move]),
1032: yy_n_chars, num_to_read );
1033:
1034: yy_current_buffer->yy_n_chars = yy_n_chars;
1035: }
1036:
1037: if ( yy_n_chars == 0 )
1038: {
1039: if ( number_to_move == YY_MORE_ADJ )
1040: {
1041: ret_val = EOB_ACT_END_OF_FILE;
1042: yyrestart( yyin );
1043: }
1044:
1045: else
1046: {
1047: ret_val = EOB_ACT_LAST_MATCH;
1048: yy_current_buffer->yy_buffer_status =
1049: YY_BUFFER_EOF_PENDING;
1050: }
1051: }
1052:
1053: else
1054: ret_val = EOB_ACT_CONTINUE_SCAN;
1055:
1056: yy_n_chars += number_to_move;
1057: yy_current_buffer->yy_ch_buf[yy_n_chars] = YY_END_OF_BUFFER_CHAR;
1058: yy_current_buffer->yy_ch_buf[yy_n_chars + 1] = YY_END_OF_BUFFER_CHAR;
1059:
1060: yytext_ptr = &yy_current_buffer->yy_ch_buf[0];
1061:
1062: return ret_val;
1063: }
1064:
1065:
1066: /* yy_get_previous_state - get the state just before the EOB char was reached */
1067:
1068: static yy_state_type yy_get_previous_state()
1069: {
1070: register yy_state_type yy_current_state;
1071: register char *yy_cp;
1072:
1073: yy_current_state = yy_start;
1074:
1075: for ( yy_cp = yytext_ptr + YY_MORE_ADJ; yy_cp < yy_c_buf_p; ++yy_cp )
1076: {
1077: register YY_CHAR yy_c = (*yy_cp ? yy_ec[YY_SC_TO_UI(*yy_cp)] : 1);
1078: if ( yy_accept[yy_current_state] )
1079: {
1080: yy_last_accepting_state = yy_current_state;
1081: yy_last_accepting_cpos = yy_cp;
1082: }
1083: while ( yy_chk[yy_base[yy_current_state] + yy_c] != yy_current_state )
1084: {
1085: yy_current_state = (int) yy_def[yy_current_state];
1086: if ( yy_current_state >= 39 )
1087: yy_c = yy_meta[(unsigned int) yy_c];
1088: }
1089: yy_current_state = yy_nxt[yy_base[yy_current_state] + (unsigned int) yy_c];
1090: }
1091:
1092: return yy_current_state;
1093: }
1094:
1095:
1096: /* yy_try_NUL_trans - try to make a transition on the NUL character
1097: *
1098: * synopsis
1099: * next_state = yy_try_NUL_trans( current_state );
1100: */
1101:
1102: #ifdef YY_USE_PROTOS
1103: static yy_state_type yy_try_NUL_trans( yy_state_type yy_current_state )
1104: #else
1105: static yy_state_type yy_try_NUL_trans( yy_current_state )
1106: yy_state_type yy_current_state;
1107: #endif
1108: {
1109: register int yy_is_jam;
1110: register char *yy_cp = yy_c_buf_p;
1111:
1112: register YY_CHAR yy_c = 1;
1113: if ( yy_accept[yy_current_state] )
1114: {
1115: yy_last_accepting_state = yy_current_state;
1116: yy_last_accepting_cpos = yy_cp;
1117: }
1118: while ( yy_chk[yy_base[yy_current_state] + yy_c] != yy_current_state )
1119: {
1120: yy_current_state = (int) yy_def[yy_current_state];
1121: if ( yy_current_state >= 39 )
1122: yy_c = yy_meta[(unsigned int) yy_c];
1123: }
1124: yy_current_state = yy_nxt[yy_base[yy_current_state] + (unsigned int) yy_c];
1125: yy_is_jam = (yy_current_state == 38);
1126:
1127: return yy_is_jam ? 0 : yy_current_state;
1128: }
1129:
1130:
1131: #ifndef YY_NO_UNPUT
1132: #ifdef YY_USE_PROTOS
1133: static void yyunput( int c, register char *yy_bp )
1134: #else
1135: static void yyunput( c, yy_bp )
1136: int c;
1137: register char *yy_bp;
1138: #endif
1139: {
1140: register char *yy_cp = yy_c_buf_p;
1141:
1142: /* undo effects of setting up yytext */
1143: *yy_cp = yy_hold_char;
1144:
1145: if ( yy_cp < yy_current_buffer->yy_ch_buf + 2 )
1146: { /* need to shift things up to make room */
1147: /* +2 for EOB chars. */
1148: register int number_to_move = yy_n_chars + 2;
1149: register char *dest = &yy_current_buffer->yy_ch_buf[
1150: yy_current_buffer->yy_buf_size + 2];
1151: register char *source =
1152: &yy_current_buffer->yy_ch_buf[number_to_move];
1153:
1154: while ( source > yy_current_buffer->yy_ch_buf )
1155: *--dest = *--source;
1156:
1157: yy_cp += (int) (dest - source);
1158: yy_bp += (int) (dest - source);
1159: yy_current_buffer->yy_n_chars =
1160: yy_n_chars = yy_current_buffer->yy_buf_size;
1161:
1162: if ( yy_cp < yy_current_buffer->yy_ch_buf + 2 )
1163: YY_FATAL_ERROR( "flex scanner push-back overflow" );
1164: }
1165:
1166: *--yy_cp = (char) c;
1167:
1168:
1169: yytext_ptr = yy_bp;
1170: yy_hold_char = *yy_cp;
1171: yy_c_buf_p = yy_cp;
1172: }
1173: #endif /* ifndef YY_NO_UNPUT */
1174:
1175:
1176: #ifdef __cplusplus
1177: static int yyinput()
1178: #else
1179: static int input()
1180: #endif
1181: {
1182: int c;
1183:
1184: *yy_c_buf_p = yy_hold_char;
1185:
1186: if ( *yy_c_buf_p == YY_END_OF_BUFFER_CHAR )
1187: {
1188: /* yy_c_buf_p now points to the character we want to return.
1189: * If this occurs *before* the EOB characters, then it's a
1190: * valid NUL; if not, then we've hit the end of the buffer.
1191: */
1192: if ( yy_c_buf_p < &yy_current_buffer->yy_ch_buf[yy_n_chars] )
1193: /* This was really a NUL. */
1194: *yy_c_buf_p = '\0';
1195:
1196: else
1197: { /* need more input */
1198: int offset = yy_c_buf_p - yytext_ptr;
1199: ++yy_c_buf_p;
1200:
1201: switch ( yy_get_next_buffer() )
1202: {
1203: case EOB_ACT_LAST_MATCH:
1204: /* This happens because yy_g_n_b()
1205: * sees that we've accumulated a
1206: * token and flags that we need to
1207: * try matching the token before
1208: * proceeding. But for input(),
1209: * there's no matching to consider.
1210: * So convert the EOB_ACT_LAST_MATCH
1211: * to EOB_ACT_END_OF_FILE.
1212: */
1213:
1214: /* Reset buffer status. */
1215: yyrestart( yyin );
1216:
1217: /* fall through */
1218:
1219: case EOB_ACT_END_OF_FILE:
1220: {
1221: if ( yywrap() )
1222: return EOF;
1223:
1224: if ( ! yy_did_buffer_switch_on_eof )
1225: YY_NEW_FILE;
1226: #ifdef __cplusplus
1227: return yyinput();
1228: #else
1229: return input();
1230: #endif
1231: }
1232:
1233: case EOB_ACT_CONTINUE_SCAN:
1234: yy_c_buf_p = yytext_ptr + offset;
1235: break;
1236: }
1237: }
1238: }
1239:
1240: c = *(unsigned char *) yy_c_buf_p; /* cast for 8-bit char's */
1241: *yy_c_buf_p = '\0'; /* preserve yytext */
1242: yy_hold_char = *++yy_c_buf_p;
1243:
1244:
1245: return c;
1246: }
1247:
1248:
1249: #ifdef YY_USE_PROTOS
1250: void yyrestart( FILE *input_file )
1251: #else
1252: void yyrestart( input_file )
1253: FILE *input_file;
1254: #endif
1255: {
1256: if ( ! yy_current_buffer )
1257: yy_current_buffer = yy_create_buffer( yyin, YY_BUF_SIZE );
1258:
1259: yy_init_buffer( yy_current_buffer, input_file );
1260: yy_load_buffer_state();
1261: }
1262:
1263:
1264: #ifdef YY_USE_PROTOS
1265: void yy_switch_to_buffer( YY_BUFFER_STATE new_buffer )
1266: #else
1267: void yy_switch_to_buffer( new_buffer )
1268: YY_BUFFER_STATE new_buffer;
1269: #endif
1270: {
1271: if ( yy_current_buffer == new_buffer )
1272: return;
1273:
1274: if ( yy_current_buffer )
1275: {
1276: /* Flush out information for old buffer. */
1277: *yy_c_buf_p = yy_hold_char;
1278: yy_current_buffer->yy_buf_pos = yy_c_buf_p;
1279: yy_current_buffer->yy_n_chars = yy_n_chars;
1280: }
1281:
1282: yy_current_buffer = new_buffer;
1283: yy_load_buffer_state();
1284:
1285: /* We don't actually know whether we did this switch during
1286: * EOF (yywrap()) processing, but the only time this flag
1287: * is looked at is after yywrap() is called, so it's safe
1288: * to go ahead and always set it.
1289: */
1290: yy_did_buffer_switch_on_eof = 1;
1291: }
1292:
1293:
1294: #ifdef YY_USE_PROTOS
1295: void yy_load_buffer_state( void )
1296: #else
1297: void yy_load_buffer_state()
1298: #endif
1299: {
1300: yy_n_chars = yy_current_buffer->yy_n_chars;
1301: yytext_ptr = yy_c_buf_p = yy_current_buffer->yy_buf_pos;
1302: yyin = yy_current_buffer->yy_input_file;
1303: yy_hold_char = *yy_c_buf_p;
1304: }
1305:
1306:
1307: #ifdef YY_USE_PROTOS
1308: YY_BUFFER_STATE yy_create_buffer( FILE *file, int size )
1309: #else
1310: YY_BUFFER_STATE yy_create_buffer( file, size )
1311: FILE *file;
1312: int size;
1313: #endif
1314: {
1315: YY_BUFFER_STATE b;
1316:
1317: b = (YY_BUFFER_STATE) yy_flex_alloc( sizeof( struct yy_buffer_state ) );
1318: if ( ! b )
1319: YY_FATAL_ERROR( "out of dynamic memory in yy_create_buffer()" );
1320:
1321: b->yy_buf_size = size;
1322:
1323: /* yy_ch_buf has to be 2 characters longer than the size given because
1324: * we need to put in 2 end-of-buffer characters.
1325: */
1326: b->yy_ch_buf = (char *) yy_flex_alloc( b->yy_buf_size + 2 );
1327: if ( ! b->yy_ch_buf )
1328: YY_FATAL_ERROR( "out of dynamic memory in yy_create_buffer()" );
1329:
1330: b->yy_is_our_buffer = 1;
1331:
1332: yy_init_buffer( b, file );
1333:
1334: return b;
1335: }
1336:
1337:
1338: #ifdef YY_USE_PROTOS
1339: void yy_delete_buffer( YY_BUFFER_STATE b )
1340: #else
1341: void yy_delete_buffer( b )
1342: YY_BUFFER_STATE b;
1343: #endif
1344: {
1345: if ( ! b )
1346: return;
1347:
1348: if ( b == yy_current_buffer )
1349: yy_current_buffer = (YY_BUFFER_STATE) 0;
1350:
1351: if ( b->yy_is_our_buffer )
1352: yy_flex_free( (void *) b->yy_ch_buf );
1353:
1354: yy_flex_free( (void *) b );
1355: }
1356:
1357:
1358: #ifndef YY_ALWAYS_INTERACTIVE
1359: #ifndef YY_NEVER_INTERACTIVE
1360: extern int isatty YY_PROTO(( int ));
1361: #endif
1362: #endif
1363:
1364: #ifdef YY_USE_PROTOS
1365: void yy_init_buffer( YY_BUFFER_STATE b, FILE *file )
1366: #else
1367: void yy_init_buffer( b, file )
1368: YY_BUFFER_STATE b;
1369: FILE *file;
1370: #endif
1371:
1372:
1373: {
1374: yy_flush_buffer( b );
1375:
1376: b->yy_input_file = file;
1377: b->yy_fill_buffer = 1;
1378:
1379: #if YY_ALWAYS_INTERACTIVE
1380: b->yy_is_interactive = 1;
1381: #else
1382: #if YY_NEVER_INTERACTIVE
1383: b->yy_is_interactive = 0;
1384: #else
1385: b->yy_is_interactive = file ? (isatty( fileno(file) ) > 0) : 0;
1386: #endif
1387: #endif
1388: }
1389:
1390:
1391: #ifdef YY_USE_PROTOS
1392: void yy_flush_buffer( YY_BUFFER_STATE b )
1393: #else
1394: void yy_flush_buffer( b )
1395: YY_BUFFER_STATE b;
1396: #endif
1397:
1398: {
1399: if ( ! b )
1400: return;
1401:
1402: b->yy_n_chars = 0;
1403:
1404: /* We always need two end-of-buffer characters. The first causes
1405: * a transition to the end-of-buffer state. The second causes
1406: * a jam in that state.
1407: */
1408: b->yy_ch_buf[0] = YY_END_OF_BUFFER_CHAR;
1409: b->yy_ch_buf[1] = YY_END_OF_BUFFER_CHAR;
1410:
1411: b->yy_buf_pos = &b->yy_ch_buf[0];
1412:
1413: b->yy_at_bol = 1;
1414: b->yy_buffer_status = YY_BUFFER_NEW;
1415:
1416: if ( b == yy_current_buffer )
1417: yy_load_buffer_state();
1418: }
1419:
1420:
1421: #ifndef YY_NO_SCAN_BUFFER
1422: #ifdef YY_USE_PROTOS
1423: YY_BUFFER_STATE yy_scan_buffer( char *base, yy_size_t size )
1424: #else
1425: YY_BUFFER_STATE yy_scan_buffer( base, size )
1426: char *base;
1427: yy_size_t size;
1428: #endif
1429: {
1430: YY_BUFFER_STATE b;
1431:
1432: if ( size < 2 ||
1433: base[size-2] != YY_END_OF_BUFFER_CHAR ||
1434: base[size-1] != YY_END_OF_BUFFER_CHAR )
1435: /* They forgot to leave room for the EOB's. */
1436: return 0;
1437:
1438: b = (YY_BUFFER_STATE) yy_flex_alloc( sizeof( struct yy_buffer_state ) );
1439: if ( ! b )
1440: YY_FATAL_ERROR( "out of dynamic memory in yy_scan_buffer()" );
1441:
1442: b->yy_buf_size = size - 2; /* "- 2" to take care of EOB's */
1443: b->yy_buf_pos = b->yy_ch_buf = base;
1444: b->yy_is_our_buffer = 0;
1445: b->yy_input_file = 0;
1446: b->yy_n_chars = b->yy_buf_size;
1447: b->yy_is_interactive = 0;
1448: b->yy_at_bol = 1;
1449: b->yy_fill_buffer = 0;
1450: b->yy_buffer_status = YY_BUFFER_NEW;
1451:
1452: yy_switch_to_buffer( b );
1453:
1454: return b;
1455: }
1456: #endif
1457:
1458:
1459: #ifndef YY_NO_SCAN_STRING
1460: #ifdef YY_USE_PROTOS
1461: YY_BUFFER_STATE yy_scan_string( yyconst char *yy_str )
1462: #else
1463: YY_BUFFER_STATE yy_scan_string( yy_str )
1464: yyconst char *yy_str;
1465: #endif
1466: {
1467: int len;
1468: for ( len = 0; yy_str[len]; ++len )
1469: ;
1470:
1471: return yy_scan_bytes( yy_str, len );
1472: }
1473: #endif
1474:
1475:
1476: #ifndef YY_NO_SCAN_BYTES
1477: #ifdef YY_USE_PROTOS
1478: YY_BUFFER_STATE yy_scan_bytes( yyconst char *bytes, int len )
1479: #else
1480: YY_BUFFER_STATE yy_scan_bytes( bytes, len )
1481: yyconst char *bytes;
1482: int len;
1483: #endif
1484: {
1485: YY_BUFFER_STATE b;
1486: char *buf;
1487: yy_size_t n;
1488: int i;
1489:
1490: /* Get memory for full buffer, including space for trailing EOB's. */
1491: n = len + 2;
1492: buf = (char *) yy_flex_alloc( n );
1493: if ( ! buf )
1494: YY_FATAL_ERROR( "out of dynamic memory in yy_scan_bytes()" );
1495:
1496: for ( i = 0; i < len; ++i )
1497: buf[i] = bytes[i];
1498:
1499: buf[len] = buf[len+1] = YY_END_OF_BUFFER_CHAR;
1500:
1501: b = yy_scan_buffer( buf, n );
1502: if ( ! b )
1503: YY_FATAL_ERROR( "bad buffer in yy_scan_bytes()" );
1504:
1505: /* It's okay to grow etc. this buffer, and we should throw it
1506: * away when we're done.
1507: */
1508: b->yy_is_our_buffer = 1;
1509:
1510: return b;
1511: }
1512: #endif
1513:
1514:
1515: #ifndef YY_NO_PUSH_STATE
1516: #ifdef YY_USE_PROTOS
1517: static void yy_push_state( int new_state )
1518: #else
1519: static void yy_push_state( new_state )
1520: int new_state;
1521: #endif
1522: {
1523: if ( yy_start_stack_ptr >= yy_start_stack_depth )
1524: {
1525: yy_size_t new_size;
1526:
1527: yy_start_stack_depth += YY_START_STACK_INCR;
1528: new_size = yy_start_stack_depth * sizeof( int );
1529:
1530: if ( ! yy_start_stack )
1531: yy_start_stack = (int *) yy_flex_alloc( new_size );
1532:
1533: else
1534: yy_start_stack = (int *) yy_flex_realloc(
1535: (void *) yy_start_stack, new_size );
1536:
1537: if ( ! yy_start_stack )
1538: YY_FATAL_ERROR(
1539: "out of memory expanding start-condition stack" );
1540: }
1541:
1542: yy_start_stack[yy_start_stack_ptr++] = YY_START;
1543:
1544: BEGIN(new_state);
1545: }
1546: #endif
1547:
1548:
1549: #ifndef YY_NO_POP_STATE
1550: static void yy_pop_state()
1551: {
1552: if ( --yy_start_stack_ptr < 0 )
1553: YY_FATAL_ERROR( "start-condition stack underflow" );
1554:
1555: BEGIN(yy_start_stack[yy_start_stack_ptr]);
1556: }
1557: #endif
1558:
1559:
1560: #ifndef YY_NO_TOP_STATE
1561: static int yy_top_state()
1562: {
1563: return yy_start_stack[yy_start_stack_ptr - 1];
1564: }
1565: #endif
1566:
1567: #ifndef YY_EXIT_FAILURE
1568: #define YY_EXIT_FAILURE 2
1569: #endif
1570:
1571: #ifdef YY_USE_PROTOS
1572: static void yy_fatal_error( yyconst char msg[] )
1573: #else
1574: static void yy_fatal_error( msg )
1575: char msg[];
1576: #endif
1577: {
1578: (void) fprintf( stderr, "%s\n", msg );
1579: exit( YY_EXIT_FAILURE );
1580: }
1581:
1582:
1583:
1584: /* Redefine yyless() so it works in section 3 code. */
1585:
1586: #undef yyless
1587: #define yyless(n) \
1588: do \
1589: { \
1590: /* Undo effects of setting up yytext. */ \
1591: yytext[yyleng] = yy_hold_char; \
1592: yy_c_buf_p = yytext + n; \
1593: yy_hold_char = *yy_c_buf_p; \
1594: *yy_c_buf_p = '\0'; \
1595: yyleng = n; \
1596: } \
1597: while ( 0 )
1598:
1599:
1600: /* Internal utility routines. */
1601:
1602: #ifndef yytext_ptr
1603: #ifdef YY_USE_PROTOS
1604: static void yy_flex_strncpy( char *s1, yyconst char *s2, int n )
1605: #else
1606: static void yy_flex_strncpy( s1, s2, n )
1607: char *s1;
1608: yyconst char *s2;
1609: int n;
1610: #endif
1611: {
1612: register int i;
1613: for ( i = 0; i < n; ++i )
1614: s1[i] = s2[i];
1615: }
1616: #endif
1617:
1618: #ifdef YY_NEED_STRLEN
1619: #ifdef YY_USE_PROTOS
1620: static int yy_flex_strlen( yyconst char *s )
1621: #else
1622: static int yy_flex_strlen( s )
1623: yyconst char *s;
1624: #endif
1625: {
1626: register int n;
1627: for ( n = 0; s[n]; ++n )
1628: ;
1629:
1630: return n;
1631: }
1632: #endif
1633:
1634:
1635: #ifdef YY_USE_PROTOS
1636: static void *yy_flex_alloc( yy_size_t size )
1637: #else
1638: static void *yy_flex_alloc( size )
1639: yy_size_t size;
1640: #endif
1641: {
1642: return (void *) malloc( size );
1643: }
1644:
1645: #ifdef YY_USE_PROTOS
1646: static void *yy_flex_realloc( void *ptr, yy_size_t size )
1647: #else
1648: static void *yy_flex_realloc( ptr, size )
1649: void *ptr;
1650: yy_size_t size;
1651: #endif
1652: {
1653: /* The cast to (char *) in the following accommodates both
1654: * implementations that use char* generic pointers, and those
1655: * that use void* generic pointers. It works with the latter
1656: * because both ANSI C and C++ allow castless assignment from
1657: * any pointer type to void*, and deal with argument conversions
1658: * as though doing an assignment.
1659: */
1660: return (void *) realloc( (char *) ptr, size );
1661: }
1662:
1663: #ifdef YY_USE_PROTOS
1664: static void yy_flex_free( void *ptr )
1665: #else
1666: static void yy_flex_free( ptr )
1667: void *ptr;
1668: #endif
1669: {
1670: free( ptr );
1671: }
1672:
1673: #if YY_MAIN
1674: int main()
1675: {
1676: yylex();
1677: return 0;
1678: }
1679: #endif
1680: #line 107 "calclex.l"
1681:
1682:
1683: int
1684: yywrap ()
1685: {
1686: return 1;
1687: }