]> git.saurik.com Git - bison.git/blame_incremental - src/bison.simple
Typos in ChangeLog.
[bison.git] / src / bison.simple
... / ...
CommitLineData
1/* -*-C-*- Note some compilers choke on comments on `#line' lines. */
2#line
3/* This file comes from bison-@bison_version@. */
4
5/* Skeleton output parser for bison,
6 Copyright (C) 1984, 1989, 1990 Free Software Foundation, Inc.
7
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2, or (at your option)
11 any later version.
12
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
17
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 59 Temple Place - Suite 330,
21 Boston, MA 02111-1307, USA. */
22
23/* As a special exception, when this file is copied by Bison into a
24 Bison output file, you may use that output file without restriction.
25 This special exception was added by the Free Software Foundation
26 in version 1.24 of Bison. */
27
28/* This is the parser code that is written into each bison parser when
29 the %semantic_parser declaration is not specified in the grammar.
30 It was written by Richard Stallman by simplifying the hairy parser
31 used when %semantic_parser is specified. */
32
33#ifndef YYSTACK_USE_ALLOCA
34# ifdef alloca
35# define YYSTACK_USE_ALLOCA
36# else /* alloca not defined */
37# ifdef __GNUC__
38# define YYSTACK_USE_ALLOCA
39# define alloca __builtin_alloca
40# else /* not GNU C. */
41# if (!defined (__STDC__) && defined (sparc)) || defined (__sparc__) || defined (__sparc) || defined (__sgi) || (defined (__sun) && defined (__i386))
42# define YYSTACK_USE_ALLOCA
43# include <alloca.h>
44# else /* not sparc */
45 /* We think this test detects Watcom and Microsoft C. */
46 /* This used to test MSDOS, but that is a bad idea since that
47 symbol is in the user namespace. */
48# if (defined (_MSDOS) || defined (_MSDOS_)) && !defined (__TURBOC__)
49# if 0
50 /* No need for malloc.h, which pollutes the namespace; instead,
51 just don't use alloca. */
52# include <malloc.h>
53# endif
54# else /* not MSDOS, or __TURBOC__ */
55# if defined(_AIX)
56 /* I don't know what this was needed for, but it pollutes the
57 namespace. So I turned it off. rms, 2 May 1997. */
58 /* #include <malloc.h> */
59 #pragma alloca
60# define YYSTACK_USE_ALLOCA
61# else /* not MSDOS, or __TURBOC__, or _AIX */
62# if 0
63 /* haible@ilog.fr says this works for HPUX 9.05 and up, and on
64 HPUX 10. Eventually we can turn this on. */
65# ifdef __hpux
66# define YYSTACK_USE_ALLOCA
67# define alloca __builtin_alloca
68# endif /* __hpux */
69# endif
70# endif /* not _AIX */
71# endif /* not MSDOS, or __TURBOC__ */
72# endif /* not sparc */
73# endif /* not GNU C */
74# endif /* alloca not defined */
75#endif /* YYSTACK_USE_ALLOCA not defined */
76
77#ifdef YYSTACK_USE_ALLOCA
78# define YYSTACK_ALLOC alloca
79#else
80# define YYSTACK_ALLOC malloc
81#endif
82
83/* Note: there must be only one dollar sign in this file.
84 It is replaced by the list of actions, each action
85 as one case of the switch. */
86
87#define yyerrok (yyerrstatus = 0)
88#define yyclearin (yychar = YYEMPTY)
89#define YYEMPTY -2
90#define YYEOF 0
91#define YYACCEPT goto yyacceptlab
92#define YYABORT goto yyabortlab
93#define YYERROR goto yyerrlab1
94/* Like YYERROR except do call yyerror. This remains here temporarily
95 to ease the transition to the new meaning of YYERROR, for GCC.
96 Once GCC version 2 has supplanted version 1, this can go. */
97#define YYFAIL goto yyerrlab
98#define YYRECOVERING() (!!yyerrstatus)
99#define YYBACKUP(Token, Value) \
100do \
101 if (yychar == YYEMPTY && yylen == 1) \
102 { \
103 yychar = (Token); \
104 yylval = (Value); \
105 yychar1 = YYTRANSLATE (yychar); \
106 YYPOPSTACK; \
107 goto yybackup; \
108 } \
109 else \
110 { \
111 yyerror ("syntax error: cannot back up"); \
112 YYERROR; \
113 } \
114while (0)
115
116#define YYTERROR 1
117#define YYERRCODE 256
118
119#ifndef YYPURE
120# define YYLEX yylex ()
121#endif
122
123#ifdef YYPURE
124# ifdef YYLSP_NEEDED
125# ifdef YYLEX_PARAM
126# define YYLEX yylex (&yylval, &yylloc, YYLEX_PARAM)
127# else
128# define YYLEX yylex (&yylval, &yylloc)
129# endif
130# else /* !YYLSP_NEEDED */
131# ifdef YYLEX_PARAM
132# define YYLEX yylex (&yylval, YYLEX_PARAM)
133# else
134# define YYLEX yylex (&yylval)
135# endif
136# endif /* !YYLSP_NEEDED */
137#endif
138
139/* If nonreentrant, generate the variables here. */
140
141#ifndef YYPURE
142/* The lookahead symbol. */
143int yychar;
144
145/* The semantic value of the lookahead symbol. */
146YYSTYPE yylval;
147
148# ifdef YYLSP_NEEDED
149/* Location data for the lookahead symbol. */
150YYLTYPE yylloc;
151# endif
152
153/* Number of parse errors so far. */
154int yynerrs;
155#endif /* !YYPURE */
156
157/* Enable debugging if requested. */
158#if YYDEBUG
159# define YYDPRINTF(Args) \
160do { \
161 if (yydebug) \
162 fprintf Args; \
163} while (0)
164/* Nonzero means print parse trace. [The following comment makes no
165 sense to me. Could someone clarify it? --akim] Since this is
166 uninitialized, it does not stop multiple parsers from coexisting.
167 */
168int yydebug;
169#else /* !YYDEBUG */
170# define YYDPRINTF(Args)
171#endif /* !YYDEBUG */
172
173/* YYINITDEPTH -- initial size of the parser's stacks. */
174#ifndef YYINITDEPTH
175# define YYINITDEPTH 200
176#endif
177
178/* YYMAXDEPTH -- maximum size the stacks can grow to (effective only
179 if the built-in stack extension method is used). */
180#if YYMAXDEPTH == 0
181# undef YYMAXDEPTH
182#endif
183
184#ifndef YYMAXDEPTH
185# define YYMAXDEPTH 10000
186#endif
187\f
188/* Define __yy_memcpy. Note that the size argument
189 should be passed with type unsigned int, because that is what the non-GCC
190 definitions require. With GCC, __builtin_memcpy takes an arg
191 of type size_t, but it can handle unsigned int. */
192
193#if __GNUC__ > 1 /* GNU C and GNU C++ define this. */
194# define __yy_memcpy(To, From, Count) __builtin_memcpy (To, From, Count)
195#else /* not GNU C or C++ */
196# ifndef __cplusplus
197
198/* This is the most reliable way to avoid incompatibilities
199 in available built-in functions on various systems. */
200static void
201__yy_memcpy (to, from, count)
202 char *to;
203 char *from;
204 unsigned int count;
205{
206 register char *f = from;
207 register char *t = to;
208 register int i = count;
209
210 while (i-- > 0)
211 *t++ = *f++;
212}
213
214# else /* __cplusplus */
215
216/* This is the most reliable way to avoid incompatibilities
217 in available built-in functions on various systems. */
218static void
219__yy_memcpy (char *to, char *from, unsigned int count)
220{
221 register char *t = to;
222 register char *f = from;
223 register int i = count;
224
225 while (i-- > 0)
226 *t++ = *f++;
227}
228
229# endif
230#endif
231\f
232#line
233
234/* The user can define YYPARSE_PARAM as the name of an argument to be passed
235 into yyparse. The argument should have type void *.
236 It should actually point to an object.
237 Grammar actions can access the variable by casting it
238 to the proper pointer type. */
239
240#ifdef YYPARSE_PARAM
241# ifdef __cplusplus
242# define YYPARSE_PARAM_ARG void *YYPARSE_PARAM
243# define YYPARSE_PARAM_DECL
244# else /* !__cplusplus */
245# define YYPARSE_PARAM_ARG YYPARSE_PARAM
246# define YYPARSE_PARAM_DECL void *YYPARSE_PARAM;
247# endif /* !__cplusplus */
248#else /* !YYPARSE_PARAM */
249# define YYPARSE_PARAM_ARG
250# define YYPARSE_PARAM_DECL
251#endif /* !YYPARSE_PARAM */
252
253/* Prevent warning if -Wstrict-prototypes. */
254#ifdef __GNUC__
255# ifdef YYPARSE_PARAM
256int yyparse (void *);
257# else
258int yyparse (void);
259# endif
260#endif
261
262int
263yyparse (YYPARSE_PARAM_ARG)
264 YYPARSE_PARAM_DECL
265{
266 register int yystate;
267 register int yyn;
268 /* Number of tokens to shift before error messages enabled. */
269 int yyerrstatus;
270 /* Lookahead token as an internal (translated) token number. */
271 int yychar1 = 0;
272
273 /* Three stacks and their tools:
274 `yyss': related to states,
275 `yysv': related to semantic values,
276 `yyls': related to locations.
277
278 Refer to the stacks thru separate pointers, to allow yyoverflow
279 to reallocate them elsewhere. */
280
281 /* The state stack. */
282 short yyssa[YYINITDEPTH];
283 short *yyss = yyssa;
284 register short *yyssp;
285
286 /* The semantic value stack. */
287 YYSTYPE yyvsa[YYINITDEPTH];
288 YYSTYPE *yyvs = yyvsa;
289 register YYSTYPE *yyvsp;
290
291#ifdef YYLSP_NEEDED
292 /* The location stack. */
293 YYLTYPE yylsa[YYINITDEPTH];
294 YYLTYPE *yyls = yylsa;
295 YYLTYPE *yylsp;
296#endif
297
298#ifdef YYLSP_NEEDED
299# define YYPOPSTACK (yyvsp--, yyssp--, yylsp--)
300#else
301# define YYPOPSTACK (yyvsp--, yyssp--)
302#endif
303
304 int yystacksize = YYINITDEPTH;
305 int yyfree_stacks = 0;
306
307#ifdef YYPURE
308 int yychar;
309 YYSTYPE yylval;
310 int yynerrs;
311# ifdef YYLSP_NEEDED
312 YYLTYPE yylloc;
313# endif
314#endif
315
316
317 /* The variables used to return semantic value and location from the
318 action routines. */
319 YYSTYPE yyval;
320# ifdef YYLSP_NEEDED
321 YYLTYPE yyloc;
322# endif
323
324 /* When reducing, the number of symbols on the RHS of the reduced
325 rule. */
326 int yylen;
327
328 YYDPRINTF ((stderr, "Starting parse\n"));
329
330 yystate = 0;
331 yyerrstatus = 0;
332 yynerrs = 0;
333 yychar = YYEMPTY; /* Cause a token to be read. */
334
335 /* Initialize stack pointers.
336 Waste one element of value and location stack
337 so that they stay on the same level as the state stack.
338 The wasted elements are never initialized. */
339
340 yyssp = yyss - 1;
341 yyvsp = yyvs;
342#ifdef YYLSP_NEEDED
343 yylsp = yyls;
344#endif
345
346
347/*------------------------------------------------------------.
348| yynewstate -- Push a new state, which is found in yystate. |
349`------------------------------------------------------------*/
350yynewstate:
351 /* In all cases, when you get here, the value and location stacks
352 have just been pushed. so pushing a state here evens the stacks.
353 */
354 *++yyssp = yystate;
355
356 if (yyssp >= yyss + yystacksize - 1)
357 {
358 /* Give user a chance to reallocate the stack. Use copies of
359 these so that the &'s don't force the real ones into memory.
360 */
361 YYSTYPE *yyvs1 = yyvs;
362 short *yyss1 = yyss;
363#ifdef YYLSP_NEEDED
364 YYLTYPE *yyls1 = yyls;
365#endif
366
367 /* Get the current used size of the three stacks, in elements. */
368 int size = yyssp - yyss + 1;
369
370#ifdef yyoverflow
371 /* Each stack pointer address is followed by the size of
372 the data in use in that stack, in bytes. */
373# ifdef YYLSP_NEEDED
374 /* This used to be a conditional around just the two extra args,
375 but that might be undefined if yyoverflow is a macro. */
376 yyoverflow ("parser stack overflow",
377 &yyss1, size * sizeof (*yyssp),
378 &yyvs1, size * sizeof (*yyvsp),
379 &yyls1, size * sizeof (*yylsp),
380 &yystacksize);
381# else
382 yyoverflow ("parser stack overflow",
383 &yyss1, size * sizeof (*yyssp),
384 &yyvs1, size * sizeof (*yyvsp),
385 &yystacksize);
386# endif
387
388 yyss = yyss1; yyvs = yyvs1;
389# ifdef YYLSP_NEEDED
390 yyls = yyls1;
391# endif
392#else /* no yyoverflow */
393 /* Extend the stack our own way. */
394 if (yystacksize >= YYMAXDEPTH)
395 {
396 yyerror ("parser stack overflow");
397 if (yyfree_stacks)
398 {
399 free (yyss);
400 free (yyvs);
401# ifdef YYLSP_NEEDED
402 free (yyls);
403# endif
404 }
405 return 2;
406 }
407 yystacksize *= 2;
408 if (yystacksize > YYMAXDEPTH)
409 yystacksize = YYMAXDEPTH;
410# ifndef YYSTACK_USE_ALLOCA
411 yyfree_stacks = 1;
412# endif
413 yyss = (short *) YYSTACK_ALLOC (yystacksize * sizeof (*yyssp));
414 __yy_memcpy ((char *)yyss, (char *)yyss1,
415 size * (unsigned int) sizeof (*yyssp));
416 yyvs = (YYSTYPE *) YYSTACK_ALLOC (yystacksize * sizeof (*yyvsp));
417 __yy_memcpy ((char *)yyvs, (char *)yyvs1,
418 size * (unsigned int) sizeof (*yyvsp));
419# ifdef YYLSP_NEEDED
420 yyls = (YYLTYPE *) YYSTACK_ALLOC (yystacksize * sizeof (*yylsp));
421 __yy_memcpy ((char *)yyls, (char *)yyls1,
422 size * (unsigned int) sizeof (*yylsp));
423# endif
424#endif /* no yyoverflow */
425
426 yyssp = yyss + size - 1;
427 yyvsp = yyvs + size - 1;
428#ifdef YYLSP_NEEDED
429 yylsp = yyls + size - 1;
430#endif
431
432 YYDPRINTF ((stderr, "Stack size increased to %d\n", yystacksize));
433
434 if (yyssp >= yyss + yystacksize - 1)
435 YYABORT;
436 }
437
438 YYDPRINTF ((stderr, "Entering state %d\n", yystate));
439
440 goto yybackup;
441
442
443/*-----------.
444| yybackup. |
445`-----------*/
446yybackup:
447
448/* Do appropriate processing given the current state. */
449/* Read a lookahead token if we need one and don't already have one. */
450/* yyresume: */
451
452 /* First try to decide what to do without reference to lookahead token. */
453
454 yyn = yypact[yystate];
455 if (yyn == YYFLAG)
456 goto yydefault;
457
458 /* Not known => get a lookahead token if don't already have one. */
459
460 /* yychar is either YYEMPTY or YYEOF
461 or a valid token in external form. */
462
463 if (yychar == YYEMPTY)
464 {
465 YYDPRINTF ((stderr, "Reading a token: "));
466 yychar = YYLEX;
467 }
468
469 /* Convert token to internal form (in yychar1) for indexing tables with */
470
471 if (yychar <= 0) /* This means end of input. */
472 {
473 yychar1 = 0;
474 yychar = YYEOF; /* Don't call YYLEX any more */
475
476 YYDPRINTF ((stderr, "Now at end of input.\n"));
477 }
478 else
479 {
480 yychar1 = YYTRANSLATE (yychar);
481
482#if YYDEBUG
483 /* We have to keep this `#if YYDEBUG', since we use variables
484 which are defined only if `YYDEBUG' is set. */
485 if (yydebug)
486 {
487 fprintf (stderr, "Next token is %d (%s", yychar, yytname[yychar1]);
488 /* Give the individual parser a way to print the precise
489 meaning of a token, for further debugging info. */
490# ifdef YYPRINT
491 YYPRINT (stderr, yychar, yylval);
492# endif
493 fprintf (stderr, ")\n");
494 }
495#endif
496 }
497
498 yyn += yychar1;
499 if (yyn < 0 || yyn > YYLAST || yycheck[yyn] != yychar1)
500 goto yydefault;
501
502 yyn = yytable[yyn];
503
504 /* yyn is what to do for this token type in this state.
505 Negative => reduce, -yyn is rule number.
506 Positive => shift, yyn is new state.
507 New state is final state => don't bother to shift,
508 just return success.
509 0, or most negative number => error. */
510
511 if (yyn < 0)
512 {
513 if (yyn == YYFLAG)
514 goto yyerrlab;
515 yyn = -yyn;
516 goto yyreduce;
517 }
518 else if (yyn == 0)
519 goto yyerrlab;
520
521 if (yyn == YYFINAL)
522 YYACCEPT;
523
524 /* Shift the lookahead token. */
525 YYDPRINTF ((stderr, "Shifting token %d (%s), ", yychar, yytname[yychar1]));
526
527 /* Discard the token being shifted unless it is eof. */
528 if (yychar != YYEOF)
529 yychar = YYEMPTY;
530
531 *++yyvsp = yylval;
532#ifdef YYLSP_NEEDED
533 *++yylsp = yylloc;
534#endif
535
536 /* Count tokens shifted since error; after three, turn off error
537 status. */
538 if (yyerrstatus)
539 yyerrstatus--;
540
541 yystate = yyn;
542 goto yynewstate;
543
544
545/*-----------------------------------------------------------.
546| yydefault -- do the default action for the current state. |
547`-----------------------------------------------------------*/
548yydefault:
549 yyn = yydefact[yystate];
550 if (yyn == 0)
551 goto yyerrlab;
552 goto yyreduce;
553
554
555/*-----------------------------.
556| yyreduce -- Do a reduction. |
557`-----------------------------*/
558yyreduce:
559 /* yyn is the number of a rule to reduce with. */
560 yylen = yyr2[yyn];
561
562 /* If YYLEN is nonzero, implement the default value of the action:
563 `{dollar}{dollar} = {dollar}1'.
564
565 Otherwise, the following line sets YYVAL to the semantic value of
566 the lookahead token. This behavior is undocumented and Bison
567 users should not rely upon it. Assigning to YYVAL
568 unconditionally makes the parser a bit smaller, and it avoids a
569 GCC warning that YYVAL may be used uninitialized. */
570 yyval = yyvsp[1-yylen];
571#ifdef YYLSP_NEEDED
572 /* Implement default location. If the rhs is empty, extend YYLOC to
573 YYLLOC, which corresponds to the current token, otherwise
574 implement `@{dollar} = Starts at @1, ends at @YYLEN'. */
575 if (yylen > 0)
576 {
577 yyloc = yylsp[1-yylen];
578 yyloc.last_line = yylsp[0].last_line;
579 yyloc.last_column = yylsp[0].last_column;
580 }
581 else
582 {
583 yyloc.last_line = yylsp[0].last_line;
584 yyloc.last_column = yylsp[0].last_column;
585 yyloc.text = 0;
586 }
587#endif
588
589#if YYDEBUG
590 /* We have to keep this `#if YYDEBUG', since we use variables which
591 are defined only if `YYDEBUG' is set. */
592 if (yydebug)
593 {
594 int i;
595
596 fprintf (stderr, "Reducing via rule %d (line %d), ",
597 yyn, yyrline[yyn]);
598
599 /* Print the symbols being reduced, and their result. */
600 for (i = yyprhs[yyn]; yyrhs[i] > 0; i++)
601 fprintf (stderr, "%s ", yytname[yyrhs[i]]);
602 fprintf (stderr, " -> %s\n", yytname[yyr1[yyn]]);
603 }
604#endif
605$ /* The action file replaces this line marked with this dollarsign. */
606#line
607\f
608 yyvsp -= yylen;
609 yyssp -= yylen;
610#ifdef YYLSP_NEEDED
611 yylsp -= yylen;
612#endif
613
614#if YYDEBUG
615 if (yydebug)
616 {
617 short *ssp1 = yyss - 1;
618 fprintf (stderr, "state stack now");
619 while (ssp1 != yyssp)
620 fprintf (stderr, " %d", *++ssp1);
621 fprintf (stderr, "\n");
622 }
623#endif
624
625 *++yyvsp = yyval;
626#ifdef YYLSP_NEEDED
627 *++yylsp = yyloc;
628#endif
629
630 /* Now `shift' the result of the reduction. Determine what state
631 that goes to, based on the state we popped back to and the rule
632 number reduced by. */
633
634 yyn = yyr1[yyn];
635
636 yystate = yypgoto[yyn - YYNTBASE] + *yyssp;
637 if (yystate >= 0 && yystate <= YYLAST && yycheck[yystate] == *yyssp)
638 yystate = yytable[yystate];
639 else
640 yystate = yydefgoto[yyn - YYNTBASE];
641
642 goto yynewstate;
643
644
645/*------------------------------------.
646| yyerrlab -- here on detecting error |
647`------------------------------------*/
648yyerrlab:
649 /* If not already recovering from an error, report this error. */
650 if (!yyerrstatus)
651 {
652 ++yynerrs;
653
654#ifdef YYERROR_VERBOSE
655 yyn = yypact[yystate];
656
657 if (yyn > YYFLAG && yyn < YYLAST)
658 {
659 int size = 0;
660 char *msg;
661 int x, count;
662
663 count = 0;
664 /* Start X at -yyn if nec to avoid negative indexes in yycheck. */
665 for (x = (yyn < 0 ? -yyn : 0);
666 x < (sizeof (yytname) / sizeof (char *)); x++)
667 if (yycheck[x + yyn] == x)
668 size += strlen (yytname[x]) + 15, count++;
669 size += strlen ("parse error, unexpected `") + 1;
670 size += strlen (yytname[YYTRANSLATE (yychar)]);
671 msg = (char *) malloc (size);
672 if (msg != 0)
673 {
674 strcpy (msg, "parse error, unexpected `");
675 strcat (msg, yytname[YYTRANSLATE (yychar)]);
676 strcat (msg, "'");
677
678 if (count < 5)
679 {
680 count = 0;
681 for (x = (yyn < 0 ? -yyn : 0);
682 x < (sizeof (yytname) / sizeof (char *)); x++)
683 if (yycheck[x + yyn] == x)
684 {
685 strcat (msg, count == 0 ? ", expecting `" : " or `");
686 strcat (msg, yytname[x]);
687 strcat (msg, "'");
688 count++;
689 }
690 }
691 yyerror (msg);
692 free (msg);
693 }
694 else
695 yyerror ("parse error; also virtual memory exceeded");
696 }
697 else
698#endif /* YYERROR_VERBOSE */
699 yyerror ("parse error");
700 }
701 goto yyerrlab1;
702
703
704/*--------------------------------------------------.
705| yyerrlab1 -- error raised explicitly by an action |
706`--------------------------------------------------*/
707yyerrlab1:
708 if (yyerrstatus == 3)
709 {
710 /* If just tried and failed to reuse lookahead token after an
711 error, discard it. */
712
713 /* return failure if at end of input */
714 if (yychar == YYEOF)
715 YYABORT;
716 YYDPRINTF ((stderr, "Discarding token %d (%s).\n",
717 yychar, yytname[yychar1]));
718 yychar = YYEMPTY;
719 }
720
721 /* Else will try to reuse lookahead token after shifting the error
722 token. */
723
724 yyerrstatus = 3; /* Each real token shifted decrements this */
725
726 goto yyerrhandle;
727
728
729/*-------------------------------------------------------------------.
730| yyerrdefault -- current state does not do anything special for the |
731| error token. |
732`-------------------------------------------------------------------*/
733yyerrdefault:
734#if 0
735 /* This is wrong; only states that explicitly want error tokens
736 should shift them. */
737
738 /* If its default is to accept any token, ok. Otherwise pop it. */
739 yyn = yydefact[yystate];
740 if (yyn)
741 goto yydefault;
742#endif
743
744
745/*---------------------------------------------------------------.
746| yyerrpop -- pop the current state because it cannot handle the |
747| error token |
748`---------------------------------------------------------------*/
749yyerrpop:
750 if (yyssp == yyss)
751 YYABORT;
752 yyvsp--;
753 yystate = *--yyssp;
754#ifdef YYLSP_NEEDED
755 yylsp--;
756#endif
757
758#if YYDEBUG
759 if (yydebug)
760 {
761 short *ssp1 = yyss - 1;
762 fprintf (stderr, "Error: state stack now");
763 while (ssp1 != yyssp)
764 fprintf (stderr, " %d", *++ssp1);
765 fprintf (stderr, "\n");
766 }
767#endif
768
769/*--------------.
770| yyerrhandle. |
771`--------------*/
772yyerrhandle:
773 yyn = yypact[yystate];
774 if (yyn == YYFLAG)
775 goto yyerrdefault;
776
777 yyn += YYTERROR;
778 if (yyn < 0 || yyn > YYLAST || yycheck[yyn] != YYTERROR)
779 goto yyerrdefault;
780
781 yyn = yytable[yyn];
782 if (yyn < 0)
783 {
784 if (yyn == YYFLAG)
785 goto yyerrpop;
786 yyn = -yyn;
787 goto yyreduce;
788 }
789 else if (yyn == 0)
790 goto yyerrpop;
791
792 if (yyn == YYFINAL)
793 YYACCEPT;
794
795 YYDPRINTF ((stderr, "Shifting error token, "));
796
797 *++yyvsp = yylval;
798#ifdef YYLSP_NEEDED
799 *++yylsp = yylloc;
800#endif
801
802 yystate = yyn;
803 goto yynewstate;
804
805
806/*-------------------------------------.
807| yyacceptlab -- YYACCEPT comes here. |
808`-------------------------------------*/
809yyacceptlab:
810 if (yyfree_stacks)
811 {
812 free (yyss);
813 free (yyvs);
814#ifdef YYLSP_NEEDED
815 free (yyls);
816#endif
817 }
818 return 0;
819
820
821/*-----------------------------------.
822| yyabortlab -- YYABORT comes here. |
823`-----------------------------------*/
824yyabortlab:
825 if (yyfree_stacks)
826 {
827 free (yyss);
828 free (yyvs);
829#ifdef YYLSP_NEEDED
830 free (yyls);
831#endif
832 }
833 return 1;
834}