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 | { |
0de566d7 |
253 | int yychar; /* The lookahead symbol. */ |
254 | YYSTYPE yylval; /* The semantic value of the lookahead symbol. */ |
255 | int yynerrs; /* Number of syntax errors so far. */ |
256 | register int yystate; |
257 | register int yyn; |
258 | int yyresult; |
259 | |
260 | /* Number of tokens to shift before error messages enabled. */ |
261 | int yyerrstatus; |
262 | /* Lookahead token as an internal (translated) token number. */ |
263 | int yytoken = 0; |
264 | |
265 | /* two stacks and their tools: |
266 | `yyss': related to states, |
267 | `yyvs': related to semantic values, |
268 | |
269 | Refer to the stacks thru separate pointers, to allow yyoverflow |
270 | to reallocate them elsewhere. */ |
271 | |
272 | /* The state stack. */ |
273 | short *yyss; |
93a17b20 |
274 | register short *yyssp; |
0de566d7 |
275 | |
276 | /* The semantic value stack. */ |
277 | YYSTYPE *yyvs; |
93a17b20 |
278 | register YYSTYPE *yyvsp; |
a0d0e21e |
279 | |
0de566d7 |
280 | /* for ease of re-allocation and automatic freeing, have two SVs whose |
281 | * SvPVX points to the stacks */ |
282 | SV *yyss_sv, *yyvs_sv; |
283 | |
9388183f |
284 | #ifdef DEBUGGING |
285 | /* maintain also a stack of token/rule names for debugging with -Dpv */ |
e1ec3a88 |
286 | const char **yyns, **yynsp; |
9388183f |
287 | SV *yyns_sv; |
288 | # define YYPOPSTACK (yyvsp--, yyssp--, yynsp--) |
289 | #else |
290 | # define YYPOPSTACK (yyvsp--, yyssp--) |
291 | #endif |
292 | |
0de566d7 |
293 | |
294 | YYSIZE_T yystacksize = YYINITDEPTH; |
295 | |
296 | /* The variables used to return semantic value and location from the |
297 | action routines. */ |
298 | YYSTYPE yyval; |
299 | |
300 | |
301 | /* When reducing, the number of symbols on the RHS of the reduced |
302 | rule. */ |
303 | int yylen; |
304 | |
305 | YYDPRINTF ((Perl_debug_log, "Starting parse\n")); |
306 | |
0de566d7 |
307 | ENTER; /* force stack free before we return */ |
12fbd33b |
308 | SAVEVPTR(PL_yycharp); |
309 | SAVEVPTR(PL_yylvalp); |
310 | PL_yycharp = &yychar; /* so PL_yyerror() can access it */ |
311 | PL_yylvalp = &yylval; /* so various functions in toke.c can access it */ |
312 | |
9388183f |
313 | yyss_sv = NEWSV(73, YYINITDEPTH * sizeof(short)); |
314 | yyvs_sv = NEWSV(73, YYINITDEPTH * sizeof(YYSTYPE)); |
0de566d7 |
315 | SAVEFREESV(yyss_sv); |
316 | SAVEFREESV(yyvs_sv); |
317 | yyss = (short *) SvPVX(yyss_sv); |
318 | yyvs = (YYSTYPE *) SvPVX(yyvs_sv); |
9388183f |
319 | /* note that elements zero of yyvs and yyns are not used */ |
320 | yyssp = yyss; |
321 | yyvsp = yyvs; |
322 | #ifdef DEBUGGING |
323 | yyns_sv = NEWSV(73, YYINITDEPTH * sizeof(char *)); |
324 | SAVEFREESV(yyns_sv); |
e1ec3a88 |
325 | yyns = (const char **) SvPVX(yyns_sv); |
9388183f |
326 | yynsp = yyns; |
327 | #endif |
79072805 |
328 | |
0de566d7 |
329 | yystate = 0; |
330 | yyerrstatus = 0; |
93a17b20 |
331 | yynerrs = 0; |
0de566d7 |
332 | yychar = YYEMPTY; /* Cause a token to be read. */ |
333 | |
79072805 |
334 | |
9388183f |
335 | |
336 | YYDPRINTF ((Perl_debug_log, "Entering state %d\n", yystate)); |
0de566d7 |
337 | |
338 | goto yysetstate; |
339 | |
340 | /*------------------------------------------------------------. |
341 | | yynewstate -- Push a new state, which is found in yystate. | |
342 | `------------------------------------------------------------*/ |
343 | yynewstate: |
344 | /* In all cases, when you get here, the value and location stacks |
345 | have just been pushed. so pushing a state here evens the stacks. |
346 | */ |
347 | yyssp++; |
348 | |
349 | yysetstate: |
350 | *yyssp = yystate; |
351 | |
352 | if (yyss + yystacksize - 1 <= yyssp) { |
353 | /* Get the current used size of the three stacks, in elements. */ |
df35152e |
354 | const YYSIZE_T yysize = yyssp - yyss + 1; |
0de566d7 |
355 | |
356 | /* Extend the stack our own way. */ |
357 | if (YYMAXDEPTH <= yystacksize) |
358 | goto yyoverflowlab; |
359 | yystacksize *= 2; |
360 | if (YYMAXDEPTH < yystacksize) |
361 | yystacksize = YYMAXDEPTH; |
362 | |
363 | SvGROW(yyss_sv, yystacksize * sizeof(short)); |
364 | SvGROW(yyvs_sv, yystacksize * sizeof(YYSTYPE)); |
365 | yyss = (short *) SvPVX(yyss_sv); |
366 | yyvs = (YYSTYPE *) SvPVX(yyvs_sv); |
9388183f |
367 | #ifdef DEBUGGING |
368 | SvGROW(yyns_sv, yystacksize * sizeof(char *)); |
e1ec3a88 |
369 | yyns = (const char **) SvPVX(yyns_sv); |
9388183f |
370 | if (! yyns) |
371 | goto yyoverflowlab; |
372 | yynsp = yyns + yysize - 1; |
373 | #endif |
0de566d7 |
374 | if (!yyss || ! yyvs) |
375 | goto yyoverflowlab; |
376 | |
377 | yyssp = yyss + yysize - 1; |
378 | yyvsp = yyvs + yysize - 1; |
379 | |
380 | |
381 | YYDPRINTF ((Perl_debug_log, "Stack size increased to %lu\n", |
382 | (unsigned long int) yystacksize)); |
383 | |
384 | if (yyss + yystacksize - 1 <= yyssp) |
385 | YYABORT; |
93a17b20 |
386 | } |
0de566d7 |
387 | |
0de566d7 |
388 | goto yybackup; |
389 | |
390 | /*-----------. |
391 | | yybackup. | |
392 | `-----------*/ |
393 | yybackup: |
394 | |
395 | /* Do appropriate processing given the current state. */ |
396 | /* Read a lookahead token if we need one and don't already have one. */ |
397 | /* yyresume: */ |
398 | |
399 | /* First try to decide what to do without reference to lookahead token. */ |
400 | |
401 | yyn = yypact[yystate]; |
402 | if (yyn == YYPACT_NINF) |
403 | goto yydefault; |
404 | |
405 | /* Not known => get a lookahead token if don't already have one. */ |
406 | |
407 | /* YYCHAR is either YYEMPTY or YYEOF or a valid lookahead symbol. */ |
408 | if (yychar == YYEMPTY) { |
409 | YYDPRINTF ((Perl_debug_log, "Reading a token: ")); |
12fbd33b |
410 | yychar = yylex(); |
411 | # ifdef EBCDIC |
412 | if (yychar >= 0 && yychar < 255) { |
413 | yychar = NATIVE_TO_ASCII(yychar); |
414 | } |
415 | # endif |
0de566d7 |
416 | } |
417 | |
418 | if (yychar <= YYEOF) { |
419 | yychar = yytoken = YYEOF; |
420 | YYDPRINTF ((Perl_debug_log, "Now at end of input.\n")); |
93a17b20 |
421 | } |
0de566d7 |
422 | else { |
423 | yytoken = YYTRANSLATE (yychar); |
9388183f |
424 | YYDSYMPRINTF ("Next token is", yytoken, &yylval); |
93a17b20 |
425 | } |
771df094 |
426 | |
0de566d7 |
427 | /* If the proper action on seeing token YYTOKEN is to reduce or to |
428 | detect an error, take that action. */ |
429 | yyn += yytoken; |
430 | if (yyn < 0 || YYLAST < yyn || yycheck[yyn] != yytoken) |
431 | goto yydefault; |
432 | yyn = yytable[yyn]; |
433 | if (yyn <= 0) { |
434 | if (yyn == 0 || yyn == YYTABLE_NINF) |
435 | goto yyerrlab; |
436 | yyn = -yyn; |
437 | goto yyreduce; |
438 | } |
7b57b0ea |
439 | |
0de566d7 |
440 | if (yyn == YYFINAL) |
441 | YYACCEPT; |
771df094 |
442 | |
0de566d7 |
443 | /* Shift the lookahead token. */ |
444 | YYDPRINTF ((Perl_debug_log, "Shifting token %s, ", yytname[yytoken])); |
445 | |
446 | /* Discard the token being shifted unless it is eof. */ |
447 | if (yychar != YYEOF) |
448 | yychar = YYEMPTY; |
449 | |
450 | *++yyvsp = yylval; |
9388183f |
451 | #ifdef DEBUGGING |
e1ec3a88 |
452 | *++yynsp = (const char *)(yytname[yytoken]); |
9388183f |
453 | #endif |
0de566d7 |
454 | |
455 | |
456 | /* Count tokens shifted since error; after three, turn off error |
457 | status. */ |
458 | if (yyerrstatus) |
459 | yyerrstatus--; |
460 | |
461 | yystate = yyn; |
9388183f |
462 | YYDPRINTF ((Perl_debug_log, "Entering state %d\n", yystate)); |
463 | |
0de566d7 |
464 | goto yynewstate; |
465 | |
466 | |
467 | /*-----------------------------------------------------------. |
468 | | yydefault -- do the default action for the current state. | |
469 | `-----------------------------------------------------------*/ |
470 | yydefault: |
471 | yyn = yydefact[yystate]; |
472 | if (yyn == 0) |
473 | goto yyerrlab; |
474 | goto yyreduce; |
475 | |
476 | |
477 | /*-----------------------------. |
478 | | yyreduce -- Do a reduction. | |
479 | `-----------------------------*/ |
480 | yyreduce: |
481 | /* yyn is the number of a rule to reduce with. */ |
482 | yylen = yyr2[yyn]; |
483 | |
484 | /* If YYLEN is nonzero, implement the default value of the action: |
485 | `$$ = $1'. |
486 | |
487 | Otherwise, the following line sets YYVAL to garbage. |
488 | This behavior is undocumented and Bison |
489 | users should not rely upon it. Assigning to YYVAL |
490 | unconditionally makes the parser a bit smaller, and it avoids a |
491 | GCC warning that YYVAL may be used uninitialized. */ |
492 | yyval = yyvsp[1-yylen]; |
493 | |
494 | |
495 | YY_REDUCE_PRINT (yyn); |
496 | switch (yyn) { |
497 | |
498 | /* contains all the rule actions; auto-generated from perly.y */ |
499 | |
500 | #define dep() deprecate("\"do\" to call subroutines") |
501 | #include "perly.act" |
7b57b0ea |
502 | |
93a17b20 |
503 | } |
0de566d7 |
504 | |
505 | yyvsp -= yylen; |
506 | yyssp -= yylen; |
9388183f |
507 | #ifdef DEBUGGING |
508 | yynsp -= yylen; |
509 | #endif |
0de566d7 |
510 | |
0de566d7 |
511 | |
512 | *++yyvsp = yyval; |
9388183f |
513 | #ifdef DEBUGGING |
e1ec3a88 |
514 | *++yynsp = (const char *)(yytname [yyr1[yyn]]); |
9388183f |
515 | #endif |
0de566d7 |
516 | |
517 | /* Now `shift' the result of the reduction. Determine what state |
518 | that goes to, based on the state we popped back to and the rule |
519 | number reduced by. */ |
520 | |
521 | yyn = yyr1[yyn]; |
522 | |
523 | yystate = yypgoto[yyn - YYNTOKENS] + *yyssp; |
524 | if (0 <= yystate && yystate <= YYLAST && yycheck[yystate] == *yyssp) |
525 | yystate = yytable[yystate]; |
93a17b20 |
526 | else |
0de566d7 |
527 | yystate = yydefgoto[yyn - YYNTOKENS]; |
528 | |
9388183f |
529 | YYDPRINTF ((Perl_debug_log, "Entering state %d\n", yystate)); |
530 | |
531 | #ifdef DEBUGGING |
532 | /* tmp push yystate for stack print; this is normally pushed later in |
533 | * yynewstate */ |
534 | yyssp++; |
535 | *yyssp = yystate; |
536 | YY_STACK_PRINT (yyss, yyssp, yyvs, yyns); |
537 | yyssp--; |
538 | #endif |
539 | |
0de566d7 |
540 | goto yynewstate; |
541 | |
542 | |
543 | /*------------------------------------. |
544 | | yyerrlab -- here on detecting error | |
545 | `------------------------------------*/ |
546 | yyerrlab: |
547 | /* If not already recovering from an error, report this error. */ |
548 | if (!yyerrstatus) { |
549 | ++yynerrs; |
550 | #if YYERROR_VERBOSE |
551 | yyn = yypact[yystate]; |
552 | |
553 | if (YYPACT_NINF < yyn && yyn < YYLAST) { |
554 | YYSIZE_T yysize = 0; |
df35152e |
555 | const int yytype = YYTRANSLATE (yychar); |
0de566d7 |
556 | char *yymsg; |
557 | int yyx, yycount; |
558 | |
559 | yycount = 0; |
560 | /* Start YYX at -YYN if negative to avoid negative indexes in |
561 | YYCHECK. */ |
562 | for (yyx = yyn < 0 ? -yyn : 0; |
563 | yyx < (int) (sizeof (yytname) / sizeof (char *)); yyx++) |
564 | if (yycheck[yyx + yyn] == yyx && yyx != YYTERROR) |
565 | yysize += yystrlen (yytname[yyx]) + 15, yycount++; |
566 | yysize += yystrlen ("syntax error, unexpected ") + 1; |
567 | yysize += yystrlen (yytname[yytype]); |
568 | New(yymsg, yysize, char *); |
569 | if (yymsg != 0) { |
df35152e |
570 | const char *yyp = yystpcpy (yymsg, "syntax error, unexpected "); |
0de566d7 |
571 | yyp = yystpcpy (yyp, yytname[yytype]); |
572 | |
573 | if (yycount < 5) { |
574 | yycount = 0; |
575 | for (yyx = yyn < 0 ? -yyn : 0; |
576 | yyx < (int) (sizeof (yytname) / sizeof (char *)); |
577 | yyx++) |
578 | { |
579 | if (yycheck[yyx + yyn] == yyx && yyx != YYTERROR) { |
580 | const char *yyq = ! yycount ? |
581 | ", expecting " : " or "; |
582 | yyp = yystpcpy (yyp, yyq); |
583 | yyp = yystpcpy (yyp, yytname[yyx]); |
584 | yycount++; |
585 | } |
586 | } |
ecb2f335 |
587 | } |
0de566d7 |
588 | yyerror (yymsg); |
589 | YYSTACK_FREE (yymsg); |
590 | } |
591 | else |
592 | yyerror ("syntax error; also virtual memory exhausted"); |
593 | } |
594 | else |
595 | #endif /* YYERROR_VERBOSE */ |
596 | yyerror ("syntax error"); |
93a17b20 |
597 | } |
0de566d7 |
598 | |
599 | |
600 | if (yyerrstatus == 3) { |
601 | /* If just tried and failed to reuse lookahead token after an |
602 | error, discard it. */ |
603 | |
604 | /* Return failure if at end of input. */ |
605 | if (yychar == YYEOF) { |
606 | /* Pop the error token. */ |
607 | YYPOPSTACK; |
608 | /* Pop the rest of the stack. */ |
609 | while (yyss < yyssp) { |
9388183f |
610 | YYDSYMPRINTF ("Error: popping", yystos[*yyssp], yyvsp); |
0de566d7 |
611 | YYPOPSTACK; |
612 | } |
613 | YYABORT; |
614 | } |
615 | |
9388183f |
616 | YYDSYMPRINTF ("Error: discarding", yytoken, &yylval); |
0de566d7 |
617 | yychar = YYEMPTY; |
618 | |
93a17b20 |
619 | } |
0de566d7 |
620 | |
621 | /* Else will try to reuse lookahead token after shifting the error |
622 | token. */ |
623 | goto yyerrlab1; |
624 | |
625 | |
626 | /*----------------------------------------------------. |
627 | | yyerrlab1 -- error raised explicitly by an action. | |
628 | `----------------------------------------------------*/ |
629 | yyerrlab1: |
630 | yyerrstatus = 3; /* Each real token shifted decrements this. */ |
631 | |
632 | for (;;) { |
633 | yyn = yypact[yystate]; |
634 | if (yyn != YYPACT_NINF) { |
635 | yyn += YYTERROR; |
636 | if (0 <= yyn && yyn <= YYLAST && yycheck[yyn] == YYTERROR) { |
637 | yyn = yytable[yyn]; |
638 | if (0 < yyn) |
639 | break; |
640 | } |
641 | } |
642 | |
643 | /* Pop the current state because it cannot handle the error token. */ |
644 | if (yyssp == yyss) |
645 | YYABORT; |
646 | |
9388183f |
647 | YYDSYMPRINTF ("Error: popping", yystos[*yyssp], yyvsp); |
0de566d7 |
648 | yyvsp--; |
9388183f |
649 | #ifdef DEBUGGING |
650 | yynsp--; |
651 | #endif |
0de566d7 |
652 | yystate = *--yyssp; |
653 | |
9388183f |
654 | YY_STACK_PRINT (yyss, yyssp, yyvs, yyns); |
93a17b20 |
655 | } |
0de566d7 |
656 | |
657 | if (yyn == YYFINAL) |
658 | YYACCEPT; |
659 | |
660 | YYDPRINTF ((Perl_debug_log, "Shifting error token, ")); |
661 | |
662 | *++yyvsp = yylval; |
9388183f |
663 | #ifdef DEBUGGING |
664 | *++yynsp ="<err>"; |
665 | #endif |
0de566d7 |
666 | |
667 | yystate = yyn; |
9388183f |
668 | YYDPRINTF ((Perl_debug_log, "Entering state %d\n", yystate)); |
669 | |
0de566d7 |
670 | goto yynewstate; |
671 | |
672 | |
673 | /*-------------------------------------. |
674 | | yyacceptlab -- YYACCEPT comes here. | |
675 | `-------------------------------------*/ |
676 | yyacceptlab: |
677 | yyresult = 0; |
678 | goto yyreturn; |
679 | |
680 | /*-----------------------------------. |
681 | | yyabortlab -- YYABORT comes here. | |
682 | `-----------------------------------*/ |
683 | yyabortlab: |
684 | yyresult = 1; |
685 | goto yyreturn; |
686 | |
687 | /*----------------------------------------------. |
688 | | yyoverflowlab -- parser overflow comes here. | |
689 | `----------------------------------------------*/ |
690 | yyoverflowlab: |
691 | yyerror ("parser stack overflow"); |
692 | yyresult = 2; |
693 | /* Fall through. */ |
694 | |
695 | yyreturn: |
696 | |
12fbd33b |
697 | LEAVE; /* force stack free before we return */ |
e1f15930 |
698 | |
0de566d7 |
699 | return yyresult; |
e1f15930 |
700 | } |
66610fdd |
701 | |
702 | /* |
703 | * Local variables: |
704 | * c-indentation-style: bsd |
705 | * c-basic-offset: 4 |
706 | * indent-tabs-mode: t |
707 | * End: |
708 | * |
37442d52 |
709 | * ex: set ts=8 sts=4 sw=4 noet: |
710 | */ |