Commit | Line | Data |
0de566d7 |
1 | /* perly.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 perly.y are now #included |
11 | * from the files perly.tab and perly.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 | |
79072805 |
26 | #include "EXTERN.h" |
864dbfa3 |
27 | #define PERL_IN_PERLY_C |
79072805 |
28 | #include "perl.h" |
09bef843 |
29 | |
0de566d7 |
30 | typedef signed char yysigned_char; |
31 | |
32 | #ifdef DEBUGGING |
33 | # define YYDEBUG 1 |
93a17b20 |
34 | #else |
0de566d7 |
35 | # define YYDEBUG 0 |
93a17b20 |
36 | #endif |
09bef843 |
37 | |
0de566d7 |
38 | /* contains all the parser state tables; auto-generated from perly.y */ |
39 | #include "perly.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 | |
0de566d7 |
79 | /* Enable debugging if requested. */ |
9388183f |
80 | #ifdef DEBUGGING |
0de566d7 |
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 | |
9388183f |
98 | # define YYDSYMPRINTF(Title, Token, Value) \ |
0de566d7 |
99 | do { \ |
100 | if (yydebug) { \ |
101 | YYFPRINTF (Perl_debug_log, "%s ", Title); \ |
9388183f |
102 | yysymprint (aTHX_ Perl_debug_log, Token, Value); \ |
0de566d7 |
103 | YYFPRINTF (Perl_debug_log, "\n"); \ |
104 | } \ |
105 | } while (0) |
106 | |
107 | /*--------------------------------. |
108 | | Print this symbol on YYOUTPUT. | |
109 | `--------------------------------*/ |
110 | |
111 | static void |
df35152e |
112 | yysymprint (pTHX_ PerlIO *yyoutput, int yytype, const YYSTYPE *yyvaluep) |
0de566d7 |
113 | { |
0de566d7 |
114 | if (yytype < YYNTOKENS) { |
115 | YYFPRINTF (yyoutput, "token %s (", yytname[yytype]); |
116 | # ifdef YYPRINT |
117 | YYPRINT (yyoutput, yytoknum[yytype], *yyvaluep); |
9388183f |
118 | # else |
e4584336 |
119 | YYFPRINTF (yyoutput, "0x%"UVxf, (UV)yyvaluep->ival); |
0de566d7 |
120 | # endif |
121 | } |
122 | else |
123 | YYFPRINTF (yyoutput, "nterm %s (", yytname[yytype]); |
124 | |
0de566d7 |
125 | YYFPRINTF (yyoutput, ")"); |
126 | } |
127 | |
128 | |
9388183f |
129 | /* yy_stack_print() |
130 | * print the top 8 items on the parse stack. The args have the same |
131 | * meanings as the local vars in yyparse() of the same name */ |
0de566d7 |
132 | |
133 | static void |
df35152e |
134 | yy_stack_print (pTHX_ const short *yyss, const short *yyssp, const YYSTYPE *yyvs, const char**yyns) |
0de566d7 |
135 | { |
9388183f |
136 | int i; |
137 | int start = 1; |
138 | int count = (int)(yyssp - yyss); |
139 | |
140 | if (count > 8) { |
141 | start = count - 8 + 1; |
142 | count = 8; |
143 | } |
144 | |
145 | PerlIO_printf(Perl_debug_log, "\nindex:"); |
146 | for (i=0; i < count; i++) |
147 | PerlIO_printf(Perl_debug_log, " %8d", start+i); |
148 | PerlIO_printf(Perl_debug_log, "\nstate:"); |
149 | for (i=0, yyss += start; i < count; i++, yyss++) |
150 | PerlIO_printf(Perl_debug_log, " %8d", *yyss); |
151 | PerlIO_printf(Perl_debug_log, "\ntoken:"); |
152 | for (i=0, yyns += start; i < count; i++, yyns++) |
153 | PerlIO_printf(Perl_debug_log, " %8.8s", *yyns); |
154 | PerlIO_printf(Perl_debug_log, "\nvalue:"); |
155 | for (i=0, yyvs += start; i < count; i++, yyvs++) |
e4584336 |
156 | PerlIO_printf(Perl_debug_log, " %8"UVxf, (UV)yyvs->ival); |
9388183f |
157 | PerlIO_printf(Perl_debug_log, "\n\n"); |
0de566d7 |
158 | } |
159 | |
9388183f |
160 | # define YY_STACK_PRINT(yyss, yyssp, yyvs, yyns) \ |
0de566d7 |
161 | do { \ |
9388183f |
162 | if (yydebug && DEBUG_v_TEST) \ |
163 | yy_stack_print (aTHX_ (yyss), (yyssp), (yyvs), (yyns)); \ |
0de566d7 |
164 | } while (0) |
165 | |
09bef843 |
166 | |
0de566d7 |
167 | /*------------------------------------------------. |
168 | | Report that the YYRULE is going to be reduced. | |
169 | `------------------------------------------------*/ |
170 | |
171 | static void |
172 | yy_reduce_print (pTHX_ int yyrule) |
173 | { |
174 | int yyi; |
df35152e |
175 | const unsigned int yylineno = yyrline[yyrule]; |
0de566d7 |
176 | YYFPRINTF (Perl_debug_log, "Reducing stack by rule %d (line %u), ", |
177 | yyrule - 1, yylineno); |
178 | /* Print the symbols being reduced, and their result. */ |
179 | for (yyi = yyprhs[yyrule]; 0 <= yyrhs[yyi]; yyi++) |
180 | YYFPRINTF (Perl_debug_log, "%s ", yytname [yyrhs[yyi]]); |
181 | YYFPRINTF (Perl_debug_log, "-> %s\n", yytname [yyr1[yyrule]]); |
182 | } |
183 | |
184 | # define YY_REDUCE_PRINT(Rule) \ |
185 | do { \ |
186 | if (yydebug) \ |
187 | yy_reduce_print (aTHX_ Rule); \ |
188 | } while (0) |
189 | |
190 | #else /* !DEBUGGING */ |
191 | # define YYDPRINTF(Args) |
192 | # define YYDSYMPRINT(Args) |
9388183f |
193 | # define YYDSYMPRINTF(Title, Token, Value) |
194 | # define YY_STACK_PRINT(yyss, yyssp, yyvs, yyns) |
0de566d7 |
195 | # define YY_REDUCE_PRINT(Rule) |
196 | #endif /* !DEBUGGING */ |
197 | |
198 | |
199 | /* YYINITDEPTH -- initial size of the parser's stacks. */ |
200 | #ifndef YYINITDEPTH |
201 | # define YYINITDEPTH 200 |
09bef843 |
202 | #endif |
09bef843 |
203 | |
0de566d7 |
204 | |
205 | #if YYERROR_VERBOSE |
206 | # ifndef yystrlen |
207 | # if defined (__GLIBC__) && defined (_STRING_H) |
208 | # define yystrlen strlen |
209 | # else |
210 | /* Return the length of YYSTR. */ |
211 | static YYSIZE_T |
212 | yystrlen (const char *yystr) |
213 | { |
214 | register const char *yys = yystr; |
215 | |
216 | while (*yys++ != '\0') |
217 | continue; |
218 | |
219 | return yys - yystr - 1; |
220 | } |
221 | # endif |
222 | # endif |
223 | |
224 | # ifndef yystpcpy |
225 | # if defined (__GLIBC__) && defined (_STRING_H) && defined (_GNU_SOURCE) |
226 | # define yystpcpy stpcpy |
227 | # else |
228 | /* Copy YYSRC to YYDEST, returning the address of the terminating '\0' in |
229 | YYDEST. */ |
230 | static char * |
231 | yystpcpy (pTHX_ char *yydest, const char *yysrc) |
232 | { |
233 | register char *yyd = yydest; |
234 | register const char *yys = yysrc; |
235 | |
236 | while ((*yyd++ = *yys++) != '\0') |
237 | continue; |
238 | |
239 | return yyd - 1; |
240 | } |
241 | # endif |
242 | # endif |
243 | |
244 | #endif /* !YYERROR_VERBOSE */ |
245 | |
0de566d7 |
246 | /*----------. |
247 | | yyparse. | |
248 | `----------*/ |
249 | |
79072805 |
250 | int |
0de566d7 |
251 | Perl_yyparse (pTHX) |
79072805 |
252 | { |
97aff369 |
253 | dVAR; |
0de566d7 |
254 | int yychar; /* The lookahead symbol. */ |
255 | YYSTYPE yylval; /* The semantic value of the lookahead symbol. */ |
256 | int yynerrs; /* Number of syntax errors so far. */ |
257 | register int yystate; |
258 | register int yyn; |
259 | int yyresult; |
260 | |
261 | /* Number of tokens to shift before error messages enabled. */ |
262 | int yyerrstatus; |
263 | /* Lookahead token as an internal (translated) token number. */ |
264 | int yytoken = 0; |
265 | |
266 | /* two stacks and their tools: |
a0288114 |
267 | yyss: related to states, |
268 | yyvs: related to semantic values, |
0de566d7 |
269 | |
270 | Refer to the stacks thru separate pointers, to allow yyoverflow |
271 | to reallocate them elsewhere. */ |
272 | |
273 | /* The state stack. */ |
274 | short *yyss; |
93a17b20 |
275 | register short *yyssp; |
0de566d7 |
276 | |
277 | /* The semantic value stack. */ |
278 | YYSTYPE *yyvs; |
93a17b20 |
279 | register YYSTYPE *yyvsp; |
a0d0e21e |
280 | |
0de566d7 |
281 | /* for ease of re-allocation and automatic freeing, have two SVs whose |
282 | * SvPVX points to the stacks */ |
283 | SV *yyss_sv, *yyvs_sv; |
284 | |
9388183f |
285 | #ifdef DEBUGGING |
286 | /* maintain also a stack of token/rule names for debugging with -Dpv */ |
e1ec3a88 |
287 | const char **yyns, **yynsp; |
9388183f |
288 | SV *yyns_sv; |
289 | # define YYPOPSTACK (yyvsp--, yyssp--, yynsp--) |
290 | #else |
291 | # define YYPOPSTACK (yyvsp--, yyssp--) |
292 | #endif |
293 | |
0de566d7 |
294 | |
295 | YYSIZE_T yystacksize = YYINITDEPTH; |
296 | |
297 | /* The variables used to return semantic value and location from the |
298 | action routines. */ |
299 | YYSTYPE yyval; |
300 | |
301 | |
302 | /* When reducing, the number of symbols on the RHS of the reduced |
303 | rule. */ |
304 | int yylen; |
305 | |
306 | YYDPRINTF ((Perl_debug_log, "Starting parse\n")); |
307 | |
0de566d7 |
308 | ENTER; /* force stack free before we return */ |
12fbd33b |
309 | SAVEVPTR(PL_yycharp); |
310 | SAVEVPTR(PL_yylvalp); |
311 | PL_yycharp = &yychar; /* so PL_yyerror() can access it */ |
312 | PL_yylvalp = &yylval; /* so various functions in toke.c can access it */ |
313 | |
9388183f |
314 | yyss_sv = NEWSV(73, YYINITDEPTH * sizeof(short)); |
315 | yyvs_sv = NEWSV(73, YYINITDEPTH * sizeof(YYSTYPE)); |
0de566d7 |
316 | SAVEFREESV(yyss_sv); |
317 | SAVEFREESV(yyvs_sv); |
318 | yyss = (short *) SvPVX(yyss_sv); |
319 | yyvs = (YYSTYPE *) SvPVX(yyvs_sv); |
9388183f |
320 | /* note that elements zero of yyvs and yyns are not used */ |
321 | yyssp = yyss; |
322 | yyvsp = yyvs; |
323 | #ifdef DEBUGGING |
324 | yyns_sv = NEWSV(73, YYINITDEPTH * sizeof(char *)); |
325 | SAVEFREESV(yyns_sv); |
a28509cc |
326 | /* XXX This seems strange to cast char * to char ** */ |
94a11853 |
327 | yyns = (const char **) SvPVX(yyns_sv); |
9388183f |
328 | yynsp = yyns; |
329 | #endif |
79072805 |
330 | |
0de566d7 |
331 | yystate = 0; |
332 | yyerrstatus = 0; |
93a17b20 |
333 | yynerrs = 0; |
0de566d7 |
334 | yychar = YYEMPTY; /* Cause a token to be read. */ |
335 | |
79072805 |
336 | |
9388183f |
337 | |
338 | YYDPRINTF ((Perl_debug_log, "Entering state %d\n", yystate)); |
0de566d7 |
339 | |
340 | goto yysetstate; |
341 | |
342 | /*------------------------------------------------------------. |
343 | | yynewstate -- Push a new state, which is found in yystate. | |
344 | `------------------------------------------------------------*/ |
345 | yynewstate: |
346 | /* In all cases, when you get here, the value and location stacks |
347 | have just been pushed. so pushing a state here evens the stacks. |
348 | */ |
349 | yyssp++; |
350 | |
351 | yysetstate: |
352 | *yyssp = yystate; |
353 | |
354 | if (yyss + yystacksize - 1 <= yyssp) { |
355 | /* Get the current used size of the three stacks, in elements. */ |
df35152e |
356 | const YYSIZE_T yysize = yyssp - yyss + 1; |
0de566d7 |
357 | |
358 | /* Extend the stack our own way. */ |
359 | if (YYMAXDEPTH <= yystacksize) |
360 | goto yyoverflowlab; |
361 | yystacksize *= 2; |
362 | if (YYMAXDEPTH < yystacksize) |
363 | yystacksize = YYMAXDEPTH; |
364 | |
365 | SvGROW(yyss_sv, yystacksize * sizeof(short)); |
366 | SvGROW(yyvs_sv, yystacksize * sizeof(YYSTYPE)); |
367 | yyss = (short *) SvPVX(yyss_sv); |
368 | yyvs = (YYSTYPE *) SvPVX(yyvs_sv); |
9388183f |
369 | #ifdef DEBUGGING |
370 | SvGROW(yyns_sv, yystacksize * sizeof(char *)); |
a28509cc |
371 | /* XXX This seems strange to cast char * to char ** */ |
94a11853 |
372 | yyns = (const char **) SvPVX(yyns_sv); |
9388183f |
373 | if (! yyns) |
374 | goto yyoverflowlab; |
375 | yynsp = yyns + yysize - 1; |
376 | #endif |
0de566d7 |
377 | if (!yyss || ! yyvs) |
378 | goto yyoverflowlab; |
379 | |
380 | yyssp = yyss + yysize - 1; |
381 | yyvsp = yyvs + yysize - 1; |
382 | |
383 | |
384 | YYDPRINTF ((Perl_debug_log, "Stack size increased to %lu\n", |
385 | (unsigned long int) yystacksize)); |
386 | |
387 | if (yyss + yystacksize - 1 <= yyssp) |
388 | YYABORT; |
93a17b20 |
389 | } |
0de566d7 |
390 | |
0de566d7 |
391 | goto yybackup; |
392 | |
393 | /*-----------. |
394 | | yybackup. | |
395 | `-----------*/ |
396 | yybackup: |
397 | |
398 | /* Do appropriate processing given the current state. */ |
399 | /* Read a lookahead token if we need one and don't already have one. */ |
400 | /* yyresume: */ |
401 | |
402 | /* First try to decide what to do without reference to lookahead token. */ |
403 | |
404 | yyn = yypact[yystate]; |
405 | if (yyn == YYPACT_NINF) |
406 | goto yydefault; |
407 | |
408 | /* Not known => get a lookahead token if don't already have one. */ |
409 | |
410 | /* YYCHAR is either YYEMPTY or YYEOF or a valid lookahead symbol. */ |
411 | if (yychar == YYEMPTY) { |
412 | YYDPRINTF ((Perl_debug_log, "Reading a token: ")); |
12fbd33b |
413 | yychar = yylex(); |
414 | # ifdef EBCDIC |
415 | if (yychar >= 0 && yychar < 255) { |
416 | yychar = NATIVE_TO_ASCII(yychar); |
417 | } |
418 | # endif |
0de566d7 |
419 | } |
420 | |
421 | if (yychar <= YYEOF) { |
422 | yychar = yytoken = YYEOF; |
423 | YYDPRINTF ((Perl_debug_log, "Now at end of input.\n")); |
93a17b20 |
424 | } |
0de566d7 |
425 | else { |
426 | yytoken = YYTRANSLATE (yychar); |
9388183f |
427 | YYDSYMPRINTF ("Next token is", yytoken, &yylval); |
93a17b20 |
428 | } |
771df094 |
429 | |
0de566d7 |
430 | /* If the proper action on seeing token YYTOKEN is to reduce or to |
431 | detect an error, take that action. */ |
432 | yyn += yytoken; |
433 | if (yyn < 0 || YYLAST < yyn || yycheck[yyn] != yytoken) |
434 | goto yydefault; |
435 | yyn = yytable[yyn]; |
436 | if (yyn <= 0) { |
437 | if (yyn == 0 || yyn == YYTABLE_NINF) |
438 | goto yyerrlab; |
439 | yyn = -yyn; |
440 | goto yyreduce; |
441 | } |
7b57b0ea |
442 | |
0de566d7 |
443 | if (yyn == YYFINAL) |
444 | YYACCEPT; |
771df094 |
445 | |
0de566d7 |
446 | /* Shift the lookahead token. */ |
447 | YYDPRINTF ((Perl_debug_log, "Shifting token %s, ", yytname[yytoken])); |
448 | |
449 | /* Discard the token being shifted unless it is eof. */ |
450 | if (yychar != YYEOF) |
451 | yychar = YYEMPTY; |
452 | |
453 | *++yyvsp = yylval; |
9388183f |
454 | #ifdef DEBUGGING |
e1ec3a88 |
455 | *++yynsp = (const char *)(yytname[yytoken]); |
9388183f |
456 | #endif |
0de566d7 |
457 | |
458 | |
459 | /* Count tokens shifted since error; after three, turn off error |
460 | status. */ |
461 | if (yyerrstatus) |
462 | yyerrstatus--; |
463 | |
464 | yystate = yyn; |
9388183f |
465 | YYDPRINTF ((Perl_debug_log, "Entering state %d\n", yystate)); |
466 | |
0de566d7 |
467 | goto yynewstate; |
468 | |
469 | |
470 | /*-----------------------------------------------------------. |
471 | | yydefault -- do the default action for the current state. | |
472 | `-----------------------------------------------------------*/ |
473 | yydefault: |
474 | yyn = yydefact[yystate]; |
475 | if (yyn == 0) |
476 | goto yyerrlab; |
477 | goto yyreduce; |
478 | |
479 | |
480 | /*-----------------------------. |
481 | | yyreduce -- Do a reduction. | |
482 | `-----------------------------*/ |
483 | yyreduce: |
484 | /* yyn is the number of a rule to reduce with. */ |
485 | yylen = yyr2[yyn]; |
486 | |
487 | /* If YYLEN is nonzero, implement the default value of the action: |
a0288114 |
488 | "$$ = $1". |
0de566d7 |
489 | |
490 | Otherwise, the following line sets YYVAL to garbage. |
491 | This behavior is undocumented and Bison |
492 | users should not rely upon it. Assigning to YYVAL |
493 | unconditionally makes the parser a bit smaller, and it avoids a |
494 | GCC warning that YYVAL may be used uninitialized. */ |
495 | yyval = yyvsp[1-yylen]; |
496 | |
497 | |
498 | YY_REDUCE_PRINT (yyn); |
499 | switch (yyn) { |
500 | |
501 | /* contains all the rule actions; auto-generated from perly.y */ |
502 | |
503 | #define dep() deprecate("\"do\" to call subroutines") |
504 | #include "perly.act" |
7b57b0ea |
505 | |
93a17b20 |
506 | } |
0de566d7 |
507 | |
508 | yyvsp -= yylen; |
509 | yyssp -= yylen; |
9388183f |
510 | #ifdef DEBUGGING |
511 | yynsp -= yylen; |
512 | #endif |
0de566d7 |
513 | |
0de566d7 |
514 | |
515 | *++yyvsp = yyval; |
9388183f |
516 | #ifdef DEBUGGING |
e1ec3a88 |
517 | *++yynsp = (const char *)(yytname [yyr1[yyn]]); |
9388183f |
518 | #endif |
0de566d7 |
519 | |
a0288114 |
520 | /* Now shift the result of the reduction. Determine what state |
0de566d7 |
521 | that goes to, based on the state we popped back to and the rule |
522 | number reduced by. */ |
523 | |
524 | yyn = yyr1[yyn]; |
525 | |
526 | yystate = yypgoto[yyn - YYNTOKENS] + *yyssp; |
527 | if (0 <= yystate && yystate <= YYLAST && yycheck[yystate] == *yyssp) |
528 | yystate = yytable[yystate]; |
93a17b20 |
529 | else |
0de566d7 |
530 | yystate = yydefgoto[yyn - YYNTOKENS]; |
531 | |
9388183f |
532 | YYDPRINTF ((Perl_debug_log, "Entering state %d\n", yystate)); |
533 | |
534 | #ifdef DEBUGGING |
535 | /* tmp push yystate for stack print; this is normally pushed later in |
536 | * yynewstate */ |
537 | yyssp++; |
538 | *yyssp = yystate; |
539 | YY_STACK_PRINT (yyss, yyssp, yyvs, yyns); |
540 | yyssp--; |
541 | #endif |
542 | |
0de566d7 |
543 | goto yynewstate; |
544 | |
545 | |
546 | /*------------------------------------. |
547 | | yyerrlab -- here on detecting error | |
548 | `------------------------------------*/ |
549 | yyerrlab: |
550 | /* If not already recovering from an error, report this error. */ |
551 | if (!yyerrstatus) { |
552 | ++yynerrs; |
553 | #if YYERROR_VERBOSE |
554 | yyn = yypact[yystate]; |
555 | |
556 | if (YYPACT_NINF < yyn && yyn < YYLAST) { |
557 | YYSIZE_T yysize = 0; |
df35152e |
558 | const int yytype = YYTRANSLATE (yychar); |
0de566d7 |
559 | char *yymsg; |
560 | int yyx, yycount; |
561 | |
562 | yycount = 0; |
563 | /* Start YYX at -YYN if negative to avoid negative indexes in |
564 | YYCHECK. */ |
565 | for (yyx = yyn < 0 ? -yyn : 0; |
566 | yyx < (int) (sizeof (yytname) / sizeof (char *)); yyx++) |
567 | if (yycheck[yyx + yyn] == yyx && yyx != YYTERROR) |
568 | yysize += yystrlen (yytname[yyx]) + 15, yycount++; |
569 | yysize += yystrlen ("syntax error, unexpected ") + 1; |
570 | yysize += yystrlen (yytname[yytype]); |
4b711db3 |
571 | Newx(yymsg, yysize, char *); |
0de566d7 |
572 | if (yymsg != 0) { |
df35152e |
573 | const char *yyp = yystpcpy (yymsg, "syntax error, unexpected "); |
0de566d7 |
574 | yyp = yystpcpy (yyp, yytname[yytype]); |
575 | |
576 | if (yycount < 5) { |
577 | yycount = 0; |
578 | for (yyx = yyn < 0 ? -yyn : 0; |
579 | yyx < (int) (sizeof (yytname) / sizeof (char *)); |
580 | yyx++) |
581 | { |
582 | if (yycheck[yyx + yyn] == yyx && yyx != YYTERROR) { |
583 | const char *yyq = ! yycount ? |
584 | ", expecting " : " or "; |
585 | yyp = yystpcpy (yyp, yyq); |
586 | yyp = yystpcpy (yyp, yytname[yyx]); |
587 | yycount++; |
588 | } |
589 | } |
ecb2f335 |
590 | } |
0de566d7 |
591 | yyerror (yymsg); |
592 | YYSTACK_FREE (yymsg); |
593 | } |
594 | else |
595 | yyerror ("syntax error; also virtual memory exhausted"); |
596 | } |
597 | else |
598 | #endif /* YYERROR_VERBOSE */ |
599 | yyerror ("syntax error"); |
93a17b20 |
600 | } |
0de566d7 |
601 | |
602 | |
603 | if (yyerrstatus == 3) { |
604 | /* If just tried and failed to reuse lookahead token after an |
605 | error, discard it. */ |
606 | |
607 | /* Return failure if at end of input. */ |
608 | if (yychar == YYEOF) { |
609 | /* Pop the error token. */ |
610 | YYPOPSTACK; |
611 | /* Pop the rest of the stack. */ |
612 | while (yyss < yyssp) { |
9388183f |
613 | YYDSYMPRINTF ("Error: popping", yystos[*yyssp], yyvsp); |
0de566d7 |
614 | YYPOPSTACK; |
615 | } |
616 | YYABORT; |
617 | } |
618 | |
9388183f |
619 | YYDSYMPRINTF ("Error: discarding", yytoken, &yylval); |
0de566d7 |
620 | yychar = YYEMPTY; |
621 | |
93a17b20 |
622 | } |
0de566d7 |
623 | |
624 | /* Else will try to reuse lookahead token after shifting the error |
625 | token. */ |
626 | goto yyerrlab1; |
627 | |
628 | |
629 | /*----------------------------------------------------. |
630 | | yyerrlab1 -- error raised explicitly by an action. | |
631 | `----------------------------------------------------*/ |
632 | yyerrlab1: |
633 | yyerrstatus = 3; /* Each real token shifted decrements this. */ |
634 | |
635 | for (;;) { |
636 | yyn = yypact[yystate]; |
637 | if (yyn != YYPACT_NINF) { |
638 | yyn += YYTERROR; |
639 | if (0 <= yyn && yyn <= YYLAST && yycheck[yyn] == YYTERROR) { |
640 | yyn = yytable[yyn]; |
641 | if (0 < yyn) |
642 | break; |
643 | } |
644 | } |
645 | |
646 | /* Pop the current state because it cannot handle the error token. */ |
647 | if (yyssp == yyss) |
648 | YYABORT; |
649 | |
9388183f |
650 | YYDSYMPRINTF ("Error: popping", yystos[*yyssp], yyvsp); |
0de566d7 |
651 | yyvsp--; |
9388183f |
652 | #ifdef DEBUGGING |
653 | yynsp--; |
654 | #endif |
0de566d7 |
655 | yystate = *--yyssp; |
656 | |
9388183f |
657 | YY_STACK_PRINT (yyss, yyssp, yyvs, yyns); |
93a17b20 |
658 | } |
0de566d7 |
659 | |
660 | if (yyn == YYFINAL) |
661 | YYACCEPT; |
662 | |
663 | YYDPRINTF ((Perl_debug_log, "Shifting error token, ")); |
664 | |
665 | *++yyvsp = yylval; |
9388183f |
666 | #ifdef DEBUGGING |
667 | *++yynsp ="<err>"; |
668 | #endif |
0de566d7 |
669 | |
670 | yystate = yyn; |
9388183f |
671 | YYDPRINTF ((Perl_debug_log, "Entering state %d\n", yystate)); |
672 | |
0de566d7 |
673 | goto yynewstate; |
674 | |
675 | |
676 | /*-------------------------------------. |
677 | | yyacceptlab -- YYACCEPT comes here. | |
678 | `-------------------------------------*/ |
679 | yyacceptlab: |
680 | yyresult = 0; |
681 | goto yyreturn; |
682 | |
683 | /*-----------------------------------. |
684 | | yyabortlab -- YYABORT comes here. | |
685 | `-----------------------------------*/ |
686 | yyabortlab: |
687 | yyresult = 1; |
688 | goto yyreturn; |
689 | |
690 | /*----------------------------------------------. |
691 | | yyoverflowlab -- parser overflow comes here. | |
692 | `----------------------------------------------*/ |
693 | yyoverflowlab: |
694 | yyerror ("parser stack overflow"); |
695 | yyresult = 2; |
696 | /* Fall through. */ |
697 | |
698 | yyreturn: |
699 | |
12fbd33b |
700 | LEAVE; /* force stack free before we return */ |
e1f15930 |
701 | |
0de566d7 |
702 | return yyresult; |
e1f15930 |
703 | } |
66610fdd |
704 | |
705 | /* |
706 | * Local variables: |
707 | * c-indentation-style: bsd |
708 | * c-basic-offset: 4 |
709 | * indent-tabs-mode: t |
710 | * End: |
711 | * |
37442d52 |
712 | * ex: set ts=8 sts=4 sw=4 noet: |
713 | */ |