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e174121b NC |
1 | /* madly.c |
2 | * | |
3 | * Copyright (c) 2004 Larry Wall | |
4 | * | |
5 | * You may distribute under the terms of either the GNU General Public | |
6 | * License or the Artistic License, as specified in the README file. | |
7 | * | |
8 | * Note that this file was originally generated as an output from | |
9 | * GNU bison version 1.875, but now the code is statically maintained | |
10 | * and edited; the bits that are dependent on madly.y are now #included | |
11 | * from the files madly.tab and madly.act. | |
12 | * | |
13 | * Here is an important copyright statement from the original, generated | |
14 | * file: | |
15 | * | |
16 | * As a special exception, when this file is copied by Bison into a | |
17 | * Bison output file, you may use that output file without | |
18 | * restriction. This special exception was added by the Free | |
19 | * Software Foundation in version 1.24 of Bison. | |
20 | */ | |
21 | ||
22 | ||
23 | /* allow stack size to grow effectively without limit */ | |
24 | #define YYMAXDEPTH 10000000 | |
25 | ||
26 | #include "EXTERN.h" | |
27 | #define PERL_IN_PERLY_C | |
28 | #include "perl.h" | |
29 | ||
30 | typedef signed char yysigned_char; | |
31 | ||
32 | #ifdef DEBUGGING | |
33 | # define YYDEBUG 1 | |
34 | #else | |
35 | # define YYDEBUG 0 | |
36 | #endif | |
37 | ||
38 | /* contains all the parser state tables; auto-generated from madly.y */ | |
39 | #include "madly.tab" | |
40 | ||
41 | # define YYSIZE_T size_t | |
42 | ||
43 | #define yyerrok (yyerrstatus = 0) | |
44 | #define yyclearin (yychar = YYEMPTY) | |
45 | #define YYEMPTY (-2) | |
46 | #define YYEOF 0 | |
47 | ||
48 | #define YYACCEPT goto yyacceptlab | |
49 | #define YYABORT goto yyabortlab | |
50 | #define YYERROR goto yyerrlab1 | |
51 | ||
52 | ||
53 | /* Like YYERROR except do call yyerror. This remains here temporarily | |
54 | to ease the transition to the new meaning of YYERROR, for GCC. | |
55 | Once GCC version 2 has supplanted version 1, this can go. */ | |
56 | ||
57 | #define YYFAIL goto yyerrlab | |
58 | ||
59 | #define YYRECOVERING() (!!yyerrstatus) | |
60 | ||
61 | #define YYBACKUP(Token, Value) \ | |
62 | do \ | |
63 | if (yychar == YYEMPTY && yylen == 1) { \ | |
64 | yychar = (Token); \ | |
65 | yylval = (Value); \ | |
66 | yytoken = YYTRANSLATE (yychar); \ | |
67 | YYPOPSTACK; \ | |
68 | goto yybackup; \ | |
69 | } \ | |
70 | else { \ | |
71 | yyerror ("syntax error: cannot back up"); \ | |
72 | YYERROR; \ | |
73 | } \ | |
74 | while (0) | |
75 | ||
76 | #define YYTERROR 1 | |
77 | #define YYERRCODE 256 | |
78 | ||
79 | /* Enable debugging if requested. */ | |
80 | #ifdef DEBUGGING | |
81 | ||
82 | # define yydebug (DEBUG_p_TEST) | |
83 | ||
84 | # define YYFPRINTF PerlIO_printf | |
85 | ||
86 | # define YYDPRINTF(Args) \ | |
87 | do { \ | |
88 | if (yydebug) \ | |
89 | YYFPRINTF Args; \ | |
90 | } while (0) | |
91 | ||
92 | # define YYDSYMPRINT(Args) \ | |
93 | do { \ | |
94 | if (yydebug) \ | |
95 | yysymprint Args; \ | |
96 | } while (0) | |
97 | ||
98 | # define YYDSYMPRINTF(Title, Token, Value) \ | |
99 | do { \ | |
100 | if (yydebug) { \ | |
101 | YYFPRINTF (Perl_debug_log, "%s ", Title); \ | |
102 | yysymprint (aTHX_ Perl_debug_log, Token, Value); \ | |
103 | YYFPRINTF (Perl_debug_log, "\n"); \ | |
104 | } \ | |
105 | } while (0) | |
106 | ||
107 | /*--------------------------------. | |
108 | | Print this symbol on YYOUTPUT. | | |
109 | `--------------------------------*/ | |
110 | ||
111 | static void | |
112 | yysymprint (pTHX_ PerlIO *yyoutput, int yytype, YYSTYPE *yyvaluep) | |
113 | { | |
114 | /* Pacify ``unused variable'' warnings. */ | |
115 | (void) yyvaluep; | |
116 | ||
117 | if (yytype < YYNTOKENS) { | |
118 | YYFPRINTF (yyoutput, "token %s (", yytname[yytype]); | |
119 | # ifdef YYPRINT | |
120 | YYPRINT (yyoutput, yytoknum[yytype], *yyvaluep); | |
121 | # else | |
122 | YYFPRINTF (yyoutput, "0x%x", yyvaluep->ival); | |
123 | # endif | |
124 | } | |
125 | else | |
126 | YYFPRINTF (yyoutput, "nterm %s (", yytname[yytype]); | |
127 | ||
128 | switch (yytype) { | |
129 | default: | |
130 | break; | |
131 | } | |
132 | YYFPRINTF (yyoutput, ")"); | |
133 | } | |
134 | ||
135 | ||
136 | /* yy_stack_print() | |
137 | * print the top 8 items on the parse stack. The args have the same | |
138 | * meanings as the local vars in yyparse() of the same name */ | |
139 | ||
140 | static void | |
141 | yy_stack_print (pTHX_ short *yyss, short *yyssp, YYSTYPE *yyvs, const char**yyns) | |
142 | { | |
143 | int i; | |
144 | int start = 1; | |
145 | int count = (int)(yyssp - yyss); | |
146 | ||
147 | if (count > 8) { | |
148 | start = count - 8 + 1; | |
149 | count = 8; | |
150 | } | |
151 | ||
152 | PerlIO_printf(Perl_debug_log, "\nindex:"); | |
153 | for (i=0; i < count; i++) | |
154 | PerlIO_printf(Perl_debug_log, " %8d", start+i); | |
155 | PerlIO_printf(Perl_debug_log, "\nstate:"); | |
156 | for (i=0, yyss += start; i < count; i++, yyss++) | |
157 | PerlIO_printf(Perl_debug_log, " %8d", *yyss); | |
158 | PerlIO_printf(Perl_debug_log, "\ntoken:"); | |
159 | for (i=0, yyns += start; i < count; i++, yyns++) | |
160 | PerlIO_printf(Perl_debug_log, " %8.8s", *yyns); | |
161 | PerlIO_printf(Perl_debug_log, "\nvalue:"); | |
162 | for (i=0, yyvs += start; i < count; i++, yyvs++) | |
163 | PerlIO_printf(Perl_debug_log, " %8x", yyvs->ival); | |
164 | PerlIO_printf(Perl_debug_log, "\n\n"); | |
165 | } | |
166 | ||
167 | # define YY_STACK_PRINT(yyss, yyssp, yyvs, yyns) \ | |
168 | do { \ | |
169 | if (yydebug && DEBUG_v_TEST) \ | |
170 | yy_stack_print (aTHX_ (yyss), (yyssp), (yyvs), (yyns)); \ | |
171 | } while (0) | |
172 | ||
173 | ||
174 | /*------------------------------------------------. | |
175 | | Report that the YYRULE is going to be reduced. | | |
176 | `------------------------------------------------*/ | |
177 | ||
178 | static void | |
179 | yy_reduce_print (pTHX_ int yyrule) | |
180 | { | |
181 | int yyi; | |
182 | unsigned int yylineno = yyrline[yyrule]; | |
183 | YYFPRINTF (Perl_debug_log, "Reducing stack by rule %d (line %u), ", | |
184 | yyrule - 1, yylineno); | |
185 | /* Print the symbols being reduced, and their result. */ | |
186 | for (yyi = yyprhs[yyrule]; 0 <= yyrhs[yyi]; yyi++) | |
187 | YYFPRINTF (Perl_debug_log, "%s ", yytname [yyrhs[yyi]]); | |
188 | YYFPRINTF (Perl_debug_log, "-> %s\n", yytname [yyr1[yyrule]]); | |
189 | } | |
190 | ||
191 | # define YY_REDUCE_PRINT(Rule) \ | |
192 | do { \ | |
193 | if (yydebug) \ | |
194 | yy_reduce_print (aTHX_ Rule); \ | |
195 | } while (0) | |
196 | ||
197 | #else /* !DEBUGGING */ | |
198 | # define YYDPRINTF(Args) | |
199 | # define YYDSYMPRINT(Args) | |
200 | # define YYDSYMPRINTF(Title, Token, Value) | |
201 | # define YY_STACK_PRINT(yyss, yyssp, yyvs, yyns) | |
202 | # define YY_REDUCE_PRINT(Rule) | |
203 | #endif /* !DEBUGGING */ | |
204 | ||
205 | ||
206 | /* YYINITDEPTH -- initial size of the parser's stacks. */ | |
207 | #ifndef YYINITDEPTH | |
208 | # define YYINITDEPTH 200 | |
209 | #endif | |
210 | ||
211 | ||
212 | #if YYERROR_VERBOSE | |
213 | # ifndef yystrlen | |
214 | # if defined (__GLIBC__) && defined (_STRING_H) | |
215 | # define yystrlen strlen | |
216 | # else | |
217 | /* Return the length of YYSTR. */ | |
218 | static YYSIZE_T | |
219 | yystrlen (const char *yystr) | |
220 | { | |
221 | register const char *yys = yystr; | |
222 | ||
223 | while (*yys++ != '\0') | |
224 | continue; | |
225 | ||
226 | return yys - yystr - 1; | |
227 | } | |
228 | # endif | |
229 | # endif | |
230 | ||
231 | # ifndef yystpcpy | |
232 | # if defined (__GLIBC__) && defined (_STRING_H) && defined (_GNU_SOURCE) | |
233 | # define yystpcpy stpcpy | |
234 | # else | |
235 | /* Copy YYSRC to YYDEST, returning the address of the terminating '\0' in | |
236 | YYDEST. */ | |
237 | static char * | |
238 | yystpcpy (pTHX_ char *yydest, const char *yysrc) | |
239 | { | |
240 | register char *yyd = yydest; | |
241 | register const char *yys = yysrc; | |
242 | ||
243 | while ((*yyd++ = *yys++) != '\0') | |
244 | continue; | |
245 | ||
246 | return yyd - 1; | |
247 | } | |
248 | # endif | |
249 | # endif | |
250 | ||
251 | #endif /* !YYERROR_VERBOSE */ | |
252 | ||
253 | ||
254 | /*-----------------------------------------------. | |
255 | | Release the memory associated to this symbol. | | |
256 | `-----------------------------------------------*/ | |
257 | ||
258 | static void | |
259 | yydestruct (int yytype, YYSTYPE *yyvaluep) | |
260 | { | |
261 | /* Pacify ``unused variable'' warnings. */ | |
262 | (void) yyvaluep; | |
263 | ||
264 | switch (yytype) { | |
265 | default: | |
266 | break; | |
267 | } | |
268 | } | |
269 | ||
270 | ||
271 | ||
272 | ||
273 | /*----------. | |
274 | | yyparse. | | |
275 | `----------*/ | |
276 | ||
277 | int | |
278 | Perl_madparse (pTHX) | |
279 | { | |
280 | int yychar; /* The lookahead symbol. */ | |
281 | YYSTYPE yylval; /* The semantic value of the lookahead symbol. */ | |
282 | int yynerrs; /* Number of syntax errors so far. */ | |
283 | register int yystate; | |
284 | register int yyn; | |
285 | int yyresult; | |
286 | ||
287 | /* Number of tokens to shift before error messages enabled. */ | |
288 | int yyerrstatus; | |
289 | /* Lookahead token as an internal (translated) token number. */ | |
290 | int yytoken = 0; | |
291 | ||
292 | /* two stacks and their tools: | |
293 | `yyss': related to states, | |
294 | `yyvs': related to semantic values, | |
295 | ||
296 | Refer to the stacks thru separate pointers, to allow yyoverflow | |
297 | to reallocate them elsewhere. */ | |
298 | ||
299 | /* The state stack. */ | |
300 | short *yyss; | |
301 | register short *yyssp; | |
302 | ||
303 | /* The semantic value stack. */ | |
304 | YYSTYPE *yyvs; | |
305 | register YYSTYPE *yyvsp; | |
306 | ||
307 | /* for ease of re-allocation and automatic freeing, have two SVs whose | |
308 | * SvPVX points to the stacks */ | |
309 | SV *yyss_sv, *yyvs_sv; | |
310 | ||
311 | #ifdef DEBUGGING | |
312 | /* maintain also a stack of token/rule names for debugging with -Dpv */ | |
313 | const char **yyns, **yynsp; | |
314 | SV *yyns_sv; | |
315 | # define YYPOPSTACK (yyvsp--, yyssp--, yynsp--) | |
316 | #else | |
317 | # define YYPOPSTACK (yyvsp--, yyssp--) | |
318 | #endif | |
319 | ||
320 | ||
321 | YYSIZE_T yystacksize = YYINITDEPTH; | |
322 | ||
323 | /* The variables used to return semantic value and location from the | |
324 | action routines. */ | |
325 | YYSTYPE yyval; | |
326 | ||
327 | ||
328 | /* When reducing, the number of symbols on the RHS of the reduced | |
329 | rule. */ | |
330 | int yylen; | |
331 | ||
332 | YYDPRINTF ((Perl_debug_log, "Starting parse\n")); | |
333 | ||
334 | ENTER; /* force stack free before we return */ | |
335 | SAVEVPTR(PL_yycharp); | |
336 | SAVEVPTR(PL_yylvalp); | |
337 | PL_yycharp = &yychar; /* so PL_yyerror() can access it */ | |
338 | PL_yylvalp = &yylval; /* so various functions in toke.c can access it */ | |
339 | ||
340 | yyss_sv = newSV(YYINITDEPTH * sizeof(short)); | |
341 | yyvs_sv = newSV(YYINITDEPTH * sizeof(YYSTYPE)); | |
342 | SAVEFREESV(yyss_sv); | |
343 | SAVEFREESV(yyvs_sv); | |
344 | yyss = (short *) SvPVX(yyss_sv); | |
345 | yyvs = (YYSTYPE *) SvPVX(yyvs_sv); | |
346 | /* note that elements zero of yyvs and yyns are not used */ | |
347 | yyssp = yyss; | |
348 | yyvsp = yyvs; | |
349 | #ifdef DEBUGGING | |
350 | yyns_sv = newSV(YYINITDEPTH * sizeof(char *)); | |
351 | SAVEFREESV(yyns_sv); | |
352 | yyns = (const char **) SvPVX(yyns_sv); | |
353 | yynsp = yyns; | |
354 | #endif | |
355 | ||
356 | yystate = 0; | |
357 | yyerrstatus = 0; | |
358 | yynerrs = 0; | |
359 | yychar = YYEMPTY; /* Cause a token to be read. */ | |
360 | ||
361 | ||
362 | ||
363 | YYDPRINTF ((Perl_debug_log, "Entering state %d\n", yystate)); | |
364 | ||
365 | goto yysetstate; | |
366 | ||
367 | /*------------------------------------------------------------. | |
368 | | yynewstate -- Push a new state, which is found in yystate. | | |
369 | `------------------------------------------------------------*/ | |
370 | yynewstate: | |
371 | /* In all cases, when you get here, the value and location stacks | |
372 | have just been pushed. so pushing a state here evens the stacks. | |
373 | */ | |
374 | yyssp++; | |
375 | ||
376 | yysetstate: | |
377 | *yyssp = yystate; | |
378 | ||
379 | if (yyss + yystacksize - 1 <= yyssp) { | |
380 | /* Get the current used size of the three stacks, in elements. */ | |
381 | YYSIZE_T yysize = yyssp - yyss + 1; | |
382 | ||
383 | /* Extend the stack our own way. */ | |
384 | if (YYMAXDEPTH <= yystacksize) | |
385 | goto yyoverflowlab; | |
386 | yystacksize *= 2; | |
387 | if (YYMAXDEPTH < yystacksize) | |
388 | yystacksize = YYMAXDEPTH; | |
389 | ||
390 | SvGROW(yyss_sv, yystacksize * sizeof(short)); | |
391 | SvGROW(yyvs_sv, yystacksize * sizeof(YYSTYPE)); | |
392 | yyss = (short *) SvPVX(yyss_sv); | |
393 | yyvs = (YYSTYPE *) SvPVX(yyvs_sv); | |
394 | #ifdef DEBUGGING | |
395 | SvGROW(yyns_sv, yystacksize * sizeof(char *)); | |
396 | yyns = (const char **) SvPVX(yyns_sv); | |
397 | if (! yyns) | |
398 | goto yyoverflowlab; | |
399 | yynsp = yyns + yysize - 1; | |
400 | #endif | |
401 | if (!yyss || ! yyvs) | |
402 | goto yyoverflowlab; | |
403 | ||
404 | yyssp = yyss + yysize - 1; | |
405 | yyvsp = yyvs + yysize - 1; | |
406 | ||
407 | ||
408 | YYDPRINTF ((Perl_debug_log, "Stack size increased to %lu\n", | |
409 | (unsigned long int) yystacksize)); | |
410 | ||
411 | if (yyss + yystacksize - 1 <= yyssp) | |
412 | YYABORT; | |
413 | } | |
414 | ||
415 | goto yybackup; | |
416 | ||
417 | /*-----------. | |
418 | | yybackup. | | |
419 | `-----------*/ | |
420 | yybackup: | |
421 | ||
422 | /* Do appropriate processing given the current state. */ | |
423 | /* Read a lookahead token if we need one and don't already have one. */ | |
424 | /* yyresume: */ | |
425 | ||
426 | /* First try to decide what to do without reference to lookahead token. */ | |
427 | ||
428 | yyn = yypact[yystate]; | |
429 | if (yyn == YYPACT_NINF) | |
430 | goto yydefault; | |
431 | ||
432 | /* Not known => get a lookahead token if don't already have one. */ | |
433 | ||
434 | /* YYCHAR is either YYEMPTY or YYEOF or a valid lookahead symbol. */ | |
435 | if (yychar == YYEMPTY) { | |
436 | YYDPRINTF ((Perl_debug_log, "Reading a token: ")); | |
437 | yychar = madlex(); | |
438 | # ifdef EBCDIC | |
439 | if (yychar >= 0 && yychar < 255) { | |
440 | yychar = NATIVE_TO_ASCII(yychar); | |
441 | } | |
442 | # endif | |
443 | } | |
444 | ||
445 | if (yychar <= YYEOF) { | |
446 | yychar = yytoken = YYEOF; | |
447 | YYDPRINTF ((Perl_debug_log, "Now at end of input.\n")); | |
448 | } | |
449 | else { | |
450 | yytoken = YYTRANSLATE (yychar); | |
451 | YYDSYMPRINTF ("Next token is", yytoken, &yylval); | |
452 | } | |
453 | ||
454 | /* If the proper action on seeing token YYTOKEN is to reduce or to | |
455 | detect an error, take that action. */ | |
456 | yyn += yytoken; | |
457 | if (yyn < 0 || YYLAST < yyn || yycheck[yyn] != yytoken) | |
458 | goto yydefault; | |
459 | yyn = yytable[yyn]; | |
460 | if (yyn <= 0) { | |
461 | if (yyn == 0 || yyn == YYTABLE_NINF) | |
462 | goto yyerrlab; | |
463 | yyn = -yyn; | |
464 | goto yyreduce; | |
465 | } | |
466 | ||
467 | if (yyn == YYFINAL) | |
468 | YYACCEPT; | |
469 | ||
470 | /* Shift the lookahead token. */ | |
471 | YYDPRINTF ((Perl_debug_log, "Shifting token %s, ", yytname[yytoken])); | |
472 | ||
473 | /* Discard the token being shifted unless it is eof. */ | |
474 | if (yychar != YYEOF) | |
475 | yychar = YYEMPTY; | |
476 | ||
477 | *++yyvsp = yylval; | |
478 | #ifdef DEBUGGING | |
479 | *++yynsp = (const char *)(yytname[yytoken]); | |
480 | #endif | |
481 | ||
482 | ||
483 | /* Count tokens shifted since error; after three, turn off error | |
484 | status. */ | |
485 | if (yyerrstatus) | |
486 | yyerrstatus--; | |
487 | ||
488 | yystate = yyn; | |
489 | YYDPRINTF ((Perl_debug_log, "Entering state %d\n", yystate)); | |
490 | ||
491 | goto yynewstate; | |
492 | ||
493 | ||
494 | /*-----------------------------------------------------------. | |
495 | | yydefault -- do the default action for the current state. | | |
496 | `-----------------------------------------------------------*/ | |
497 | yydefault: | |
498 | yyn = yydefact[yystate]; | |
499 | if (yyn == 0) | |
500 | goto yyerrlab; | |
501 | goto yyreduce; | |
502 | ||
503 | ||
504 | /*-----------------------------. | |
505 | | yyreduce -- Do a reduction. | | |
506 | `-----------------------------*/ | |
507 | yyreduce: | |
508 | /* yyn is the number of a rule to reduce with. */ | |
509 | yylen = yyr2[yyn]; | |
510 | ||
511 | /* If YYLEN is nonzero, implement the default value of the action: | |
512 | `$$ = $1'. | |
513 | ||
514 | Otherwise, the following line sets YYVAL to garbage. | |
515 | This behavior is undocumented and Bison | |
516 | users should not rely upon it. Assigning to YYVAL | |
517 | unconditionally makes the parser a bit smaller, and it avoids a | |
518 | GCC warning that YYVAL may be used uninitialized. */ | |
519 | yyval = yyvsp[1-yylen]; | |
520 | ||
521 | ||
522 | YY_REDUCE_PRINT (yyn); | |
523 | switch (yyn) { | |
524 | ||
525 | /* contains all the rule actions; auto-generated from madly.y */ | |
526 | ||
527 | #define dep() deprecate("\"do\" to call subroutines") | |
528 | #include "madly.act" | |
529 | ||
530 | } | |
531 | ||
532 | yyvsp -= yylen; | |
533 | yyssp -= yylen; | |
534 | #ifdef DEBUGGING | |
535 | yynsp -= yylen; | |
536 | #endif | |
537 | ||
538 | ||
539 | *++yyvsp = yyval; | |
540 | #ifdef DEBUGGING | |
541 | *++yynsp = (const char *)(yytname [yyr1[yyn]]); | |
542 | #endif | |
543 | ||
544 | /* Now `shift' the result of the reduction. Determine what state | |
545 | that goes to, based on the state we popped back to and the rule | |
546 | number reduced by. */ | |
547 | ||
548 | yyn = yyr1[yyn]; | |
549 | ||
550 | yystate = yypgoto[yyn - YYNTOKENS] + *yyssp; | |
551 | if (0 <= yystate && yystate <= YYLAST && yycheck[yystate] == *yyssp) | |
552 | yystate = yytable[yystate]; | |
553 | else | |
554 | yystate = yydefgoto[yyn - YYNTOKENS]; | |
555 | ||
556 | YYDPRINTF ((Perl_debug_log, "Entering state %d\n", yystate)); | |
557 | ||
558 | #ifdef DEBUGGING | |
559 | /* tmp push yystate for stack print; this is normally pushed later in | |
560 | * yynewstate */ | |
561 | yyssp++; | |
562 | *yyssp = yystate; | |
563 | YY_STACK_PRINT (yyss, yyssp, yyvs, yyns); | |
564 | yyssp--; | |
565 | #endif | |
566 | ||
567 | goto yynewstate; | |
568 | ||
569 | ||
570 | /*------------------------------------. | |
571 | | yyerrlab -- here on detecting error | | |
572 | `------------------------------------*/ | |
573 | yyerrlab: | |
574 | /* If not already recovering from an error, report this error. */ | |
575 | if (!yyerrstatus) { | |
576 | ++yynerrs; | |
577 | #if YYERROR_VERBOSE | |
578 | yyn = yypact[yystate]; | |
579 | ||
580 | if (YYPACT_NINF < yyn && yyn < YYLAST) { | |
581 | YYSIZE_T yysize = 0; | |
582 | int yytype = YYTRANSLATE (yychar); | |
583 | char *yymsg; | |
584 | int yyx, yycount; | |
585 | ||
586 | yycount = 0; | |
587 | /* Start YYX at -YYN if negative to avoid negative indexes in | |
588 | YYCHECK. */ | |
589 | for (yyx = yyn < 0 ? -yyn : 0; | |
590 | yyx < (int) (sizeof (yytname) / sizeof (char *)); yyx++) | |
591 | if (yycheck[yyx + yyn] == yyx && yyx != YYTERROR) | |
592 | yysize += yystrlen (yytname[yyx]) + 15, yycount++; | |
593 | yysize += yystrlen ("syntax error, unexpected ") + 1; | |
594 | yysize += yystrlen (yytname[yytype]); | |
595 | New(yymsg, yysize, char *); | |
596 | if (yymsg != 0) { | |
597 | char *yyp = yystpcpy (yymsg, "syntax error, unexpected "); | |
598 | yyp = yystpcpy (yyp, yytname[yytype]); | |
599 | ||
600 | if (yycount < 5) { | |
601 | yycount = 0; | |
602 | for (yyx = yyn < 0 ? -yyn : 0; | |
603 | yyx < (int) (sizeof (yytname) / sizeof (char *)); | |
604 | yyx++) | |
605 | { | |
606 | if (yycheck[yyx + yyn] == yyx && yyx != YYTERROR) { | |
607 | const char *yyq = ! yycount ? | |
608 | ", expecting " : " or "; | |
609 | yyp = yystpcpy (yyp, yyq); | |
610 | yyp = yystpcpy (yyp, yytname[yyx]); | |
611 | yycount++; | |
612 | } | |
613 | } | |
614 | } | |
615 | yyerror (yymsg); | |
616 | YYSTACK_FREE (yymsg); | |
617 | } | |
618 | else | |
619 | yyerror ("syntax error; also virtual memory exhausted"); | |
620 | } | |
621 | else | |
622 | #endif /* YYERROR_VERBOSE */ | |
623 | yyerror ("syntax error"); | |
624 | } | |
625 | ||
626 | ||
627 | if (yyerrstatus == 3) { | |
628 | /* If just tried and failed to reuse lookahead token after an | |
629 | error, discard it. */ | |
630 | ||
631 | /* Return failure if at end of input. */ | |
632 | if (yychar == YYEOF) { | |
633 | /* Pop the error token. */ | |
634 | YYPOPSTACK; | |
635 | /* Pop the rest of the stack. */ | |
636 | while (yyss < yyssp) { | |
637 | YYDSYMPRINTF ("Error: popping", yystos[*yyssp], yyvsp); | |
638 | yydestruct (yystos[*yyssp], yyvsp); | |
639 | YYPOPSTACK; | |
640 | } | |
641 | YYABORT; | |
642 | } | |
643 | ||
644 | YYDSYMPRINTF ("Error: discarding", yytoken, &yylval); | |
645 | yydestruct (yytoken, &yylval); | |
646 | yychar = YYEMPTY; | |
647 | ||
648 | } | |
649 | ||
650 | /* Else will try to reuse lookahead token after shifting the error | |
651 | token. */ | |
652 | goto yyerrlab1; | |
653 | ||
654 | ||
655 | /*----------------------------------------------------. | |
656 | | yyerrlab1 -- error raised explicitly by an action. | | |
657 | `----------------------------------------------------*/ | |
658 | yyerrlab1: | |
659 | yyerrstatus = 3; /* Each real token shifted decrements this. */ | |
660 | ||
661 | for (;;) { | |
662 | yyn = yypact[yystate]; | |
663 | if (yyn != YYPACT_NINF) { | |
664 | yyn += YYTERROR; | |
665 | if (0 <= yyn && yyn <= YYLAST && yycheck[yyn] == YYTERROR) { | |
666 | yyn = yytable[yyn]; | |
667 | if (0 < yyn) | |
668 | break; | |
669 | } | |
670 | } | |
671 | ||
672 | /* Pop the current state because it cannot handle the error token. */ | |
673 | if (yyssp == yyss) | |
674 | YYABORT; | |
675 | ||
676 | YYDSYMPRINTF ("Error: popping", yystos[*yyssp], yyvsp); | |
677 | yydestruct (yystos[yystate], yyvsp); | |
678 | yyvsp--; | |
679 | #ifdef DEBUGGING | |
680 | yynsp--; | |
681 | #endif | |
682 | yystate = *--yyssp; | |
683 | ||
684 | YY_STACK_PRINT (yyss, yyssp, yyvs, yyns); | |
685 | } | |
686 | ||
687 | if (yyn == YYFINAL) | |
688 | YYACCEPT; | |
689 | ||
690 | YYDPRINTF ((Perl_debug_log, "Shifting error token, ")); | |
691 | ||
692 | *++yyvsp = yylval; | |
693 | #ifdef DEBUGGING | |
694 | *++yynsp ="<err>"; | |
695 | #endif | |
696 | ||
697 | yystate = yyn; | |
698 | YYDPRINTF ((Perl_debug_log, "Entering state %d\n", yystate)); | |
699 | ||
700 | goto yynewstate; | |
701 | ||
702 | ||
703 | /*-------------------------------------. | |
704 | | yyacceptlab -- YYACCEPT comes here. | | |
705 | `-------------------------------------*/ | |
706 | yyacceptlab: | |
707 | yyresult = 0; | |
708 | goto yyreturn; | |
709 | ||
710 | /*-----------------------------------. | |
711 | | yyabortlab -- YYABORT comes here. | | |
712 | `-----------------------------------*/ | |
713 | yyabortlab: | |
714 | yyresult = 1; | |
715 | goto yyreturn; | |
716 | ||
717 | /*----------------------------------------------. | |
718 | | yyoverflowlab -- parser overflow comes here. | | |
719 | `----------------------------------------------*/ | |
720 | yyoverflowlab: | |
721 | yyerror ("parser stack overflow"); | |
722 | yyresult = 2; | |
723 | /* Fall through. */ | |
724 | ||
725 | yyreturn: | |
726 | ||
727 | LEAVE; /* force stack free before we return */ | |
728 | ||
729 | return yyresult; | |
730 | } |