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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 1984, 1989, 1990, 2000 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) \ | |
100 | do \ | |
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 | } \ | |
114 | while (0) | |
115 | ||
116 | #define YYTERROR 1 | |
117 | #define YYERRCODE 256 | |
118 | ||
119 | ||
120 | /* YYLLOC_DEFAULT -- Compute the default location (before the actions | |
121 | are run). | |
122 | ||
123 | When YYLLOC_DEFAULT is run, CURRENT is set the location of the | |
124 | first token. By default, to implement support for ranges, extend | |
125 | its range to the last symbol. */ | |
126 | ||
127 | #ifndef YYLLOC_DEFAULT | |
128 | # define YYLLOC_DEFAULT(Current, Last) \ | |
129 | Current.last_line = Last.last_line; \ | |
130 | Current.last_column = Last.last_column; | |
131 | #endif | |
132 | ||
133 | ||
134 | /* YYLEX -- calling `yylex' with the right arguments. */ | |
135 | ||
136 | #if YYPURE | |
137 | # if YYLSP_NEEDED | |
138 | # ifdef YYLEX_PARAM | |
139 | # define YYLEX yylex (&yylval, &yylloc, YYLEX_PARAM) | |
140 | # else | |
141 | # define YYLEX yylex (&yylval, &yylloc) | |
142 | # endif | |
143 | # else /* !YYLSP_NEEDED */ | |
144 | # ifdef YYLEX_PARAM | |
145 | # define YYLEX yylex (&yylval, YYLEX_PARAM) | |
146 | # else | |
147 | # define YYLEX yylex (&yylval) | |
148 | # endif | |
149 | # endif /* !YYLSP_NEEDED */ | |
150 | #else /* !YYPURE */ | |
151 | # define YYLEX yylex () | |
152 | #endif /* !YYPURE */ | |
153 | ||
154 | ||
155 | /* Enable debugging if requested. */ | |
156 | #if YYDEBUG | |
157 | # define YYDPRINTF(Args) \ | |
158 | do { \ | |
159 | if (yydebug) \ | |
160 | fprintf Args; \ | |
161 | } while (0) | |
162 | /* Nonzero means print parse trace. [The following comment makes no | |
163 | sense to me. Could someone clarify it? --akim] Since this is | |
164 | uninitialized, it does not stop multiple parsers from coexisting. | |
165 | */ | |
166 | int yydebug; | |
167 | #else /* !YYDEBUG */ | |
168 | # define YYDPRINTF(Args) | |
169 | #endif /* !YYDEBUG */ | |
170 | ||
171 | /* YYINITDEPTH -- initial size of the parser's stacks. */ | |
172 | #ifndef YYINITDEPTH | |
173 | # define YYINITDEPTH 200 | |
174 | #endif | |
175 | ||
176 | /* YYMAXDEPTH -- maximum size the stacks can grow to (effective only | |
177 | if the built-in stack extension method is used). */ | |
178 | #if YYMAXDEPTH == 0 | |
179 | # undef YYMAXDEPTH | |
180 | #endif | |
181 | ||
182 | #ifndef YYMAXDEPTH | |
183 | # define YYMAXDEPTH 10000 | |
184 | #endif | |
185 | \f | |
186 | /* Define __yy_memcpy. Note that the size argument | |
187 | should be passed with type unsigned int, because that is what the non-GCC | |
188 | definitions require. With GCC, __builtin_memcpy takes an arg | |
189 | of type size_t, but it can handle unsigned int. */ | |
190 | ||
191 | #if __GNUC__ > 1 /* GNU C and GNU C++ define this. */ | |
192 | # define __yy_memcpy(To, From, Count) __builtin_memcpy (To, From, Count) | |
193 | #else /* not GNU C or C++ */ | |
194 | # ifndef __cplusplus | |
195 | ||
196 | /* This is the most reliable way to avoid incompatibilities | |
197 | in available built-in functions on various systems. */ | |
198 | static void | |
199 | __yy_memcpy (to, from, count) | |
200 | char *to; | |
201 | char *from; | |
202 | unsigned int count; | |
203 | { | |
204 | register char *f = from; | |
205 | register char *t = to; | |
206 | register int i = count; | |
207 | ||
208 | while (i-- > 0) | |
209 | *t++ = *f++; | |
210 | } | |
211 | ||
212 | # else /* __cplusplus */ | |
213 | ||
214 | /* This is the most reliable way to avoid incompatibilities | |
215 | in available built-in functions on various systems. */ | |
216 | static void | |
217 | __yy_memcpy (char *to, char *from, unsigned int count) | |
218 | { | |
219 | register char *t = to; | |
220 | register char *f = from; | |
221 | register int i = count; | |
222 | ||
223 | while (i-- > 0) | |
224 | *t++ = *f++; | |
225 | } | |
226 | ||
227 | # endif | |
228 | #endif | |
229 | \f | |
230 | #line | |
231 | ||
232 | /* The user can define YYPARSE_PARAM as the name of an argument to be passed | |
233 | into yyparse. The argument should have type void *. | |
234 | It should actually point to an object. | |
235 | Grammar actions can access the variable by casting it | |
236 | to the proper pointer type. */ | |
237 | ||
238 | #ifdef YYPARSE_PARAM | |
239 | # ifdef __cplusplus | |
240 | # define YYPARSE_PARAM_ARG void *YYPARSE_PARAM | |
241 | # define YYPARSE_PARAM_DECL | |
242 | # else /* !__cplusplus */ | |
243 | # define YYPARSE_PARAM_ARG YYPARSE_PARAM | |
244 | # define YYPARSE_PARAM_DECL void *YYPARSE_PARAM; | |
245 | # endif /* !__cplusplus */ | |
246 | #else /* !YYPARSE_PARAM */ | |
247 | # define YYPARSE_PARAM_ARG | |
248 | # define YYPARSE_PARAM_DECL | |
249 | #endif /* !YYPARSE_PARAM */ | |
250 | ||
251 | /* Prevent warning if -Wstrict-prototypes. */ | |
252 | #ifdef __GNUC__ | |
253 | # ifdef YYPARSE_PARAM | |
254 | int yyparse (void *); | |
255 | # else | |
256 | int yyparse (void); | |
257 | # endif | |
258 | #endif | |
259 | ||
260 | /* YY_DECL_VARIABLES -- depending whether we use a pure parser, | |
261 | variables are global, or local to YYPARSE. */ | |
262 | ||
263 | #define _YY_DECL_VARIABLES \ | |
264 | /* The lookahead symbol. */ \ | |
265 | int yychar; \ | |
266 | \ | |
267 | /* The semantic value of the lookahead symbol. */ \ | |
268 | YYSTYPE yylval; \ | |
269 | \ | |
270 | /* Number of parse errors so far. */ \ | |
271 | int yynerrs; | |
272 | ||
273 | #if YYLSP_NEEDED | |
274 | # define YY_DECL_VARIABLES \ | |
275 | _YY_DECL_VARIABLES \ | |
276 | \ | |
277 | /* Location data for the lookahead symbol. */ \ | |
278 | YYLTYPE yylloc; | |
279 | #else | |
280 | # define YY_DECL_VARIABLES \ | |
281 | _YY_DECL_VARIABLES | |
282 | #endif | |
283 | ||
284 | ||
285 | /* If nonreentrant, generate the variables here. */ | |
286 | ||
287 | #if !YYPURE | |
288 | YY_DECL_VARIABLES | |
289 | #endif /* !YYPURE */ | |
290 | ||
291 | int | |
292 | yyparse (YYPARSE_PARAM_ARG) | |
293 | YYPARSE_PARAM_DECL | |
294 | { | |
295 | /* If reentrant, generate the variables here. */ | |
296 | #if YYPURE | |
297 | YY_DECL_VARIABLES | |
298 | #endif /* !YYPURE */ | |
299 | ||
300 | register int yystate; | |
301 | register int yyn; | |
302 | /* Number of tokens to shift before error messages enabled. */ | |
303 | int yyerrstatus; | |
304 | /* Lookahead token as an internal (translated) token number. */ | |
305 | int yychar1 = 0; | |
306 | ||
307 | /* Three stacks and their tools: | |
308 | `yyss': related to states, | |
309 | `yysv': related to semantic values, | |
310 | `yyls': related to locations. | |
311 | ||
312 | Refer to the stacks thru separate pointers, to allow yyoverflow | |
313 | to reallocate them elsewhere. */ | |
314 | ||
315 | /* The state stack. */ | |
316 | short yyssa[YYINITDEPTH]; | |
317 | short *yyss = yyssa; | |
318 | register short *yyssp; | |
319 | ||
320 | /* The semantic value stack. */ | |
321 | YYSTYPE yyvsa[YYINITDEPTH]; | |
322 | YYSTYPE *yyvs = yyvsa; | |
323 | register YYSTYPE *yyvsp; | |
324 | ||
325 | #if YYLSP_NEEDED | |
326 | /* The location stack. */ | |
327 | YYLTYPE yylsa[YYINITDEPTH]; | |
328 | YYLTYPE *yyls = yylsa; | |
329 | YYLTYPE *yylsp; | |
330 | #endif | |
331 | ||
332 | #if YYLSP_NEEDED | |
333 | # define YYPOPSTACK (yyvsp--, yyssp--, yylsp--) | |
334 | #else | |
335 | # define YYPOPSTACK (yyvsp--, yyssp--) | |
336 | #endif | |
337 | ||
338 | int yystacksize = YYINITDEPTH; | |
339 | int yyfree_stacks = 0; | |
340 | ||
341 | ||
342 | /* The variables used to return semantic value and location from the | |
343 | action routines. */ | |
344 | YYSTYPE yyval; | |
345 | # if YYLSP_NEEDED | |
346 | YYLTYPE yyloc; | |
347 | # endif | |
348 | ||
349 | /* When reducing, the number of symbols on the RHS of the reduced | |
350 | rule. */ | |
351 | int yylen; | |
352 | ||
353 | YYDPRINTF ((stderr, "Starting parse\n")); | |
354 | ||
355 | yystate = 0; | |
356 | yyerrstatus = 0; | |
357 | yynerrs = 0; | |
358 | yychar = YYEMPTY; /* Cause a token to be read. */ | |
359 | ||
360 | /* Initialize stack pointers. | |
361 | Waste one element of value and location stack | |
362 | so that they stay on the same level as the state stack. | |
363 | The wasted elements are never initialized. */ | |
364 | ||
365 | yyssp = yyss - 1; | |
366 | yyvsp = yyvs; | |
367 | #if YYLSP_NEEDED | |
368 | yylsp = yyls; | |
369 | #endif | |
370 | ||
371 | ||
372 | /*------------------------------------------------------------. | |
373 | | yynewstate -- Push a new state, which is found in yystate. | | |
374 | `------------------------------------------------------------*/ | |
375 | yynewstate: | |
376 | /* In all cases, when you get here, the value and location stacks | |
377 | have just been pushed. so pushing a state here evens the stacks. | |
378 | */ | |
379 | *++yyssp = yystate; | |
380 | ||
381 | if (yyssp >= yyss + yystacksize - 1) | |
382 | { | |
383 | /* Give user a chance to reallocate the stack. Use copies of | |
384 | these so that the &'s don't force the real ones into memory. | |
385 | */ | |
386 | YYSTYPE *yyvs1 = yyvs; | |
387 | short *yyss1 = yyss; | |
388 | #if YYLSP_NEEDED | |
389 | YYLTYPE *yyls1 = yyls; | |
390 | #endif | |
391 | ||
392 | /* Get the current used size of the three stacks, in elements. */ | |
393 | int size = yyssp - yyss + 1; | |
394 | ||
395 | #ifdef yyoverflow | |
396 | /* Each stack pointer address is followed by the size of the | |
397 | data in use in that stack, in bytes. */ | |
398 | # if YYLSP_NEEDED | |
399 | /* This used to be a conditional around just the two extra args, | |
400 | but that might be undefined if yyoverflow is a macro. */ | |
401 | yyoverflow ("parser stack overflow", | |
402 | &yyss1, size * sizeof (*yyssp), | |
403 | &yyvs1, size * sizeof (*yyvsp), | |
404 | &yyls1, size * sizeof (*yylsp), | |
405 | &yystacksize); | |
406 | # else | |
407 | yyoverflow ("parser stack overflow", | |
408 | &yyss1, size * sizeof (*yyssp), | |
409 | &yyvs1, size * sizeof (*yyvsp), | |
410 | &yystacksize); | |
411 | # endif | |
412 | ||
413 | yyss = yyss1; yyvs = yyvs1; | |
414 | # if YYLSP_NEEDED | |
415 | yyls = yyls1; | |
416 | # endif | |
417 | #else /* no yyoverflow */ | |
418 | /* Extend the stack our own way. */ | |
419 | if (yystacksize >= YYMAXDEPTH) | |
420 | { | |
421 | yyerror ("parser stack overflow"); | |
422 | if (yyfree_stacks) | |
423 | { | |
424 | free (yyss); | |
425 | free (yyvs); | |
426 | # if YYLSP_NEEDED | |
427 | free (yyls); | |
428 | # endif | |
429 | } | |
430 | return 2; | |
431 | } | |
432 | yystacksize *= 2; | |
433 | if (yystacksize > YYMAXDEPTH) | |
434 | yystacksize = YYMAXDEPTH; | |
435 | # ifndef YYSTACK_USE_ALLOCA | |
436 | yyfree_stacks = 1; | |
437 | # endif | |
438 | yyss = (short *) YYSTACK_ALLOC (yystacksize * sizeof (*yyssp)); | |
439 | __yy_memcpy ((char *)yyss, (char *)yyss1, | |
440 | size * (unsigned int) sizeof (*yyssp)); | |
441 | yyvs = (YYSTYPE *) YYSTACK_ALLOC (yystacksize * sizeof (*yyvsp)); | |
442 | __yy_memcpy ((char *)yyvs, (char *)yyvs1, | |
443 | size * (unsigned int) sizeof (*yyvsp)); | |
444 | # if YYLSP_NEEDED | |
445 | yyls = (YYLTYPE *) YYSTACK_ALLOC (yystacksize * sizeof (*yylsp)); | |
446 | __yy_memcpy ((char *)yyls, (char *)yyls1, | |
447 | size * (unsigned int) sizeof (*yylsp)); | |
448 | # endif | |
449 | #endif /* no yyoverflow */ | |
450 | ||
451 | yyssp = yyss + size - 1; | |
452 | yyvsp = yyvs + size - 1; | |
453 | #if YYLSP_NEEDED | |
454 | yylsp = yyls + size - 1; | |
455 | #endif | |
456 | ||
457 | YYDPRINTF ((stderr, "Stack size increased to %d\n", yystacksize)); | |
458 | ||
459 | if (yyssp >= yyss + yystacksize - 1) | |
460 | YYABORT; | |
461 | } | |
462 | ||
463 | YYDPRINTF ((stderr, "Entering state %d\n", yystate)); | |
464 | ||
465 | goto yybackup; | |
466 | ||
467 | ||
468 | /*-----------. | |
469 | | yybackup. | | |
470 | `-----------*/ | |
471 | yybackup: | |
472 | ||
473 | /* Do appropriate processing given the current state. */ | |
474 | /* Read a lookahead token if we need one and don't already have one. */ | |
475 | /* yyresume: */ | |
476 | ||
477 | /* First try to decide what to do without reference to lookahead token. */ | |
478 | ||
479 | yyn = yypact[yystate]; | |
480 | if (yyn == YYFLAG) | |
481 | goto yydefault; | |
482 | ||
483 | /* Not known => get a lookahead token if don't already have one. */ | |
484 | ||
485 | /* yychar is either YYEMPTY or YYEOF | |
486 | or a valid token in external form. */ | |
487 | ||
488 | if (yychar == YYEMPTY) | |
489 | { | |
490 | YYDPRINTF ((stderr, "Reading a token: ")); | |
491 | yychar = YYLEX; | |
492 | } | |
493 | ||
494 | /* Convert token to internal form (in yychar1) for indexing tables with */ | |
495 | ||
496 | if (yychar <= 0) /* This means end of input. */ | |
497 | { | |
498 | yychar1 = 0; | |
499 | yychar = YYEOF; /* Don't call YYLEX any more */ | |
500 | ||
501 | YYDPRINTF ((stderr, "Now at end of input.\n")); | |
502 | } | |
503 | else | |
504 | { | |
505 | yychar1 = YYTRANSLATE (yychar); | |
506 | ||
507 | #if YYDEBUG | |
508 | /* We have to keep this `#if YYDEBUG', since we use variables | |
509 | which are defined only if `YYDEBUG' is set. */ | |
510 | if (yydebug) | |
511 | { | |
512 | fprintf (stderr, "Next token is %d (%s", yychar, yytname[yychar1]); | |
513 | /* Give the individual parser a way to print the precise | |
514 | meaning of a token, for further debugging info. */ | |
515 | # ifdef YYPRINT | |
516 | YYPRINT (stderr, yychar, yylval); | |
517 | # endif | |
518 | fprintf (stderr, ")\n"); | |
519 | } | |
520 | #endif | |
521 | } | |
522 | ||
523 | yyn += yychar1; | |
524 | if (yyn < 0 || yyn > YYLAST || yycheck[yyn] != yychar1) | |
525 | goto yydefault; | |
526 | ||
527 | yyn = yytable[yyn]; | |
528 | ||
529 | /* yyn is what to do for this token type in this state. | |
530 | Negative => reduce, -yyn is rule number. | |
531 | Positive => shift, yyn is new state. | |
532 | New state is final state => don't bother to shift, | |
533 | just return success. | |
534 | 0, or most negative number => error. */ | |
535 | ||
536 | if (yyn < 0) | |
537 | { | |
538 | if (yyn == YYFLAG) | |
539 | goto yyerrlab; | |
540 | yyn = -yyn; | |
541 | goto yyreduce; | |
542 | } | |
543 | else if (yyn == 0) | |
544 | goto yyerrlab; | |
545 | ||
546 | if (yyn == YYFINAL) | |
547 | YYACCEPT; | |
548 | ||
549 | /* Shift the lookahead token. */ | |
550 | YYDPRINTF ((stderr, "Shifting token %d (%s), ", yychar, yytname[yychar1])); | |
551 | ||
552 | /* Discard the token being shifted unless it is eof. */ | |
553 | if (yychar != YYEOF) | |
554 | yychar = YYEMPTY; | |
555 | ||
556 | *++yyvsp = yylval; | |
557 | #if YYLSP_NEEDED | |
558 | *++yylsp = yylloc; | |
559 | #endif | |
560 | ||
561 | /* Count tokens shifted since error; after three, turn off error | |
562 | status. */ | |
563 | if (yyerrstatus) | |
564 | yyerrstatus--; | |
565 | ||
566 | yystate = yyn; | |
567 | goto yynewstate; | |
568 | ||
569 | ||
570 | /*-----------------------------------------------------------. | |
571 | | yydefault -- do the default action for the current state. | | |
572 | `-----------------------------------------------------------*/ | |
573 | yydefault: | |
574 | yyn = yydefact[yystate]; | |
575 | if (yyn == 0) | |
576 | goto yyerrlab; | |
577 | goto yyreduce; | |
578 | ||
579 | ||
580 | /*-----------------------------. | |
581 | | yyreduce -- Do a reduction. | | |
582 | `-----------------------------*/ | |
583 | yyreduce: | |
584 | /* yyn is the number of a rule to reduce with. */ | |
585 | yylen = yyr2[yyn]; | |
586 | ||
587 | /* If YYLEN is nonzero, implement the default value of the action: | |
588 | `{dollar}{dollar} = {dollar}1'. | |
589 | ||
590 | Otherwise, the following line sets YYVAL to the semantic value of | |
591 | the lookahead token. This behavior is undocumented and Bison | |
592 | users should not rely upon it. Assigning to YYVAL | |
593 | unconditionally makes the parser a bit smaller, and it avoids a | |
594 | GCC warning that YYVAL may be used uninitialized. */ | |
595 | yyval = yyvsp[1-yylen]; | |
596 | ||
597 | #if YYLSP_NEEDED | |
598 | /* Similarly for the default location. Let the user run additional | |
599 | commands if for instance locations are ranges. */ | |
600 | yyloc = yylsp[1-yylen]; | |
601 | YYLLOC_DEFAULT (yyloc, yylsp[0]); | |
602 | #endif | |
603 | ||
604 | #if YYDEBUG | |
605 | /* We have to keep this `#if YYDEBUG', since we use variables which | |
606 | are defined only if `YYDEBUG' is set. */ | |
607 | if (yydebug) | |
608 | { | |
609 | int i; | |
610 | ||
611 | fprintf (stderr, "Reducing via rule %d (line %d), ", | |
612 | yyn, yyrline[yyn]); | |
613 | ||
614 | /* Print the symbols being reduced, and their result. */ | |
615 | for (i = yyprhs[yyn]; yyrhs[i] > 0; i++) | |
616 | fprintf (stderr, "%s ", yytname[yyrhs[i]]); | |
617 | fprintf (stderr, " -> %s\n", yytname[yyr1[yyn]]); | |
618 | } | |
619 | #endif | |
620 | $ /* The action file replaces this line marked with this dollarsign. */ | |
621 | #line | |
622 | \f | |
623 | yyvsp -= yylen; | |
624 | yyssp -= yylen; | |
625 | #if YYLSP_NEEDED | |
626 | yylsp -= yylen; | |
627 | #endif | |
628 | ||
629 | #if YYDEBUG | |
630 | if (yydebug) | |
631 | { | |
632 | short *ssp1 = yyss - 1; | |
633 | fprintf (stderr, "state stack now"); | |
634 | while (ssp1 != yyssp) | |
635 | fprintf (stderr, " %d", *++ssp1); | |
636 | fprintf (stderr, "\n"); | |
637 | } | |
638 | #endif | |
639 | ||
640 | *++yyvsp = yyval; | |
641 | #if YYLSP_NEEDED | |
642 | *++yylsp = yyloc; | |
643 | #endif | |
644 | ||
645 | /* Now `shift' the result of the reduction. Determine what state | |
646 | that goes to, based on the state we popped back to and the rule | |
647 | number reduced by. */ | |
648 | ||
649 | yyn = yyr1[yyn]; | |
650 | ||
651 | yystate = yypgoto[yyn - YYNTBASE] + *yyssp; | |
652 | if (yystate >= 0 && yystate <= YYLAST && yycheck[yystate] == *yyssp) | |
653 | yystate = yytable[yystate]; | |
654 | else | |
655 | yystate = yydefgoto[yyn - YYNTBASE]; | |
656 | ||
657 | goto yynewstate; | |
658 | ||
659 | ||
660 | /*------------------------------------. | |
661 | | yyerrlab -- here on detecting error | | |
662 | `------------------------------------*/ | |
663 | yyerrlab: | |
664 | /* If not already recovering from an error, report this error. */ | |
665 | if (!yyerrstatus) | |
666 | { | |
667 | ++yynerrs; | |
668 | ||
669 | #ifdef YYERROR_VERBOSE | |
670 | yyn = yypact[yystate]; | |
671 | ||
672 | if (yyn > YYFLAG && yyn < YYLAST) | |
673 | { | |
674 | int size = 0; | |
675 | char *msg; | |
676 | int x, count; | |
677 | ||
678 | count = 0; | |
679 | /* Start X at -yyn if nec to avoid negative indexes in yycheck. */ | |
680 | for (x = (yyn < 0 ? -yyn : 0); | |
681 | x < (sizeof (yytname) / sizeof (char *)); x++) | |
682 | if (yycheck[x + yyn] == x) | |
683 | size += strlen (yytname[x]) + 15, count++; | |
684 | size += strlen ("parse error, unexpected `") + 1; | |
685 | size += strlen (yytname[YYTRANSLATE (yychar)]); | |
686 | msg = (char *) malloc (size); | |
687 | if (msg != 0) | |
688 | { | |
689 | strcpy (msg, "parse error, unexpected `"); | |
690 | strcat (msg, yytname[YYTRANSLATE (yychar)]); | |
691 | strcat (msg, "'"); | |
692 | ||
693 | if (count < 5) | |
694 | { | |
695 | count = 0; | |
696 | for (x = (yyn < 0 ? -yyn : 0); | |
697 | x < (sizeof (yytname) / sizeof (char *)); x++) | |
698 | if (yycheck[x + yyn] == x) | |
699 | { | |
700 | strcat (msg, count == 0 ? ", expecting `" : " or `"); | |
701 | strcat (msg, yytname[x]); | |
702 | strcat (msg, "'"); | |
703 | count++; | |
704 | } | |
705 | } | |
706 | yyerror (msg); | |
707 | free (msg); | |
708 | } | |
709 | else | |
710 | yyerror ("parse error; also virtual memory exceeded"); | |
711 | } | |
712 | else | |
713 | #endif /* YYERROR_VERBOSE */ | |
714 | yyerror ("parse error"); | |
715 | } | |
716 | goto yyerrlab1; | |
717 | ||
718 | ||
719 | /*--------------------------------------------------. | |
720 | | yyerrlab1 -- error raised explicitly by an action | | |
721 | `--------------------------------------------------*/ | |
722 | yyerrlab1: | |
723 | if (yyerrstatus == 3) | |
724 | { | |
725 | /* If just tried and failed to reuse lookahead token after an | |
726 | error, discard it. */ | |
727 | ||
728 | /* return failure if at end of input */ | |
729 | if (yychar == YYEOF) | |
730 | YYABORT; | |
731 | YYDPRINTF ((stderr, "Discarding token %d (%s).\n", | |
732 | yychar, yytname[yychar1])); | |
733 | yychar = YYEMPTY; | |
734 | } | |
735 | ||
736 | /* Else will try to reuse lookahead token after shifting the error | |
737 | token. */ | |
738 | ||
739 | yyerrstatus = 3; /* Each real token shifted decrements this */ | |
740 | ||
741 | goto yyerrhandle; | |
742 | ||
743 | ||
744 | /*-------------------------------------------------------------------. | |
745 | | yyerrdefault -- current state does not do anything special for the | | |
746 | | error token. | | |
747 | `-------------------------------------------------------------------*/ | |
748 | yyerrdefault: | |
749 | #if 0 | |
750 | /* This is wrong; only states that explicitly want error tokens | |
751 | should shift them. */ | |
752 | ||
753 | /* If its default is to accept any token, ok. Otherwise pop it. */ | |
754 | yyn = yydefact[yystate]; | |
755 | if (yyn) | |
756 | goto yydefault; | |
757 | #endif | |
758 | ||
759 | ||
760 | /*---------------------------------------------------------------. | |
761 | | yyerrpop -- pop the current state because it cannot handle the | | |
762 | | error token | | |
763 | `---------------------------------------------------------------*/ | |
764 | yyerrpop: | |
765 | if (yyssp == yyss) | |
766 | YYABORT; | |
767 | yyvsp--; | |
768 | yystate = *--yyssp; | |
769 | #if YYLSP_NEEDED | |
770 | yylsp--; | |
771 | #endif | |
772 | ||
773 | #if YYDEBUG | |
774 | if (yydebug) | |
775 | { | |
776 | short *ssp1 = yyss - 1; | |
777 | fprintf (stderr, "Error: state stack now"); | |
778 | while (ssp1 != yyssp) | |
779 | fprintf (stderr, " %d", *++ssp1); | |
780 | fprintf (stderr, "\n"); | |
781 | } | |
782 | #endif | |
783 | ||
784 | /*--------------. | |
785 | | yyerrhandle. | | |
786 | `--------------*/ | |
787 | yyerrhandle: | |
788 | yyn = yypact[yystate]; | |
789 | if (yyn == YYFLAG) | |
790 | goto yyerrdefault; | |
791 | ||
792 | yyn += YYTERROR; | |
793 | if (yyn < 0 || yyn > YYLAST || yycheck[yyn] != YYTERROR) | |
794 | goto yyerrdefault; | |
795 | ||
796 | yyn = yytable[yyn]; | |
797 | if (yyn < 0) | |
798 | { | |
799 | if (yyn == YYFLAG) | |
800 | goto yyerrpop; | |
801 | yyn = -yyn; | |
802 | goto yyreduce; | |
803 | } | |
804 | else if (yyn == 0) | |
805 | goto yyerrpop; | |
806 | ||
807 | if (yyn == YYFINAL) | |
808 | YYACCEPT; | |
809 | ||
810 | YYDPRINTF ((stderr, "Shifting error token, ")); | |
811 | ||
812 | *++yyvsp = yylval; | |
813 | #if YYLSP_NEEDED | |
814 | *++yylsp = yylloc; | |
815 | #endif | |
816 | ||
817 | yystate = yyn; | |
818 | goto yynewstate; | |
819 | ||
820 | ||
821 | /*-------------------------------------. | |
822 | | yyacceptlab -- YYACCEPT comes here. | | |
823 | `-------------------------------------*/ | |
824 | yyacceptlab: | |
825 | if (yyfree_stacks) | |
826 | { | |
827 | free (yyss); | |
828 | free (yyvs); | |
829 | #if YYLSP_NEEDED | |
830 | free (yyls); | |
831 | #endif | |
832 | } | |
833 | return 0; | |
834 | ||
835 | ||
836 | /*-----------------------------------. | |
837 | | yyabortlab -- YYABORT comes here. | | |
838 | `-----------------------------------*/ | |
839 | yyabortlab: | |
840 | if (yyfree_stacks) | |
841 | { | |
842 | free (yyss); | |
843 | free (yyvs); | |
844 | #if YYLSP_NEEDED | |
845 | free (yyls); | |
846 | #endif | |
847 | } | |
848 | return 1; | |
849 | } |