Commit | Line | Data |
0de566d7 |
1 | /* perly.c |
2 | * |
54ca4ee7 |
3 | * Copyright (c) 2004, 2005, 2006 Larry Wall and others |
0de566d7 |
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 |
f05e27e5 |
10 | * and edited; the bits that are dependent on perly.y are now |
11 | * #included from the files perly.tab and perly.act. |
0de566d7 |
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. |
bc463c31 |
20 | * |
21 | * Note that this file is also #included in madly.c, to allow compilation |
22 | * of a second parser, Perl_madparse, that is identical to Perl_yyparse, |
f05e27e5 |
23 | * but which includes extra code for dumping the parse tree. |
24 | * This is controlled by the PERL_IN_MADLY_C define. |
0de566d7 |
25 | */ |
26 | |
27 | |
3797f23d |
28 | |
0de566d7 |
29 | /* allow stack size to grow effectively without limit */ |
30 | #define YYMAXDEPTH 10000000 |
31 | |
79072805 |
32 | #include "EXTERN.h" |
864dbfa3 |
33 | #define PERL_IN_PERLY_C |
79072805 |
34 | #include "perl.h" |
09bef843 |
35 | |
3797f23d |
36 | typedef unsigned char yytype_uint8; |
37 | typedef signed char yytype_int8; |
38 | typedef unsigned short int yytype_uint16; |
39 | typedef short int yytype_int16; |
0de566d7 |
40 | typedef signed char yysigned_char; |
41 | |
42 | #ifdef DEBUGGING |
43 | # define YYDEBUG 1 |
93a17b20 |
44 | #else |
0de566d7 |
45 | # define YYDEBUG 0 |
93a17b20 |
46 | #endif |
09bef843 |
47 | |
f05e27e5 |
48 | /* contains all the parser state tables; auto-generated from perly.y */ |
49 | #include "perly.tab" |
0de566d7 |
50 | |
51 | # define YYSIZE_T size_t |
52 | |
53 | #define yyerrok (yyerrstatus = 0) |
54 | #define yyclearin (yychar = YYEMPTY) |
55 | #define YYEMPTY (-2) |
56 | #define YYEOF 0 |
57 | |
58 | #define YYACCEPT goto yyacceptlab |
59 | #define YYABORT goto yyabortlab |
60 | #define YYERROR goto yyerrlab1 |
61 | |
62 | |
63 | /* Like YYERROR except do call yyerror. This remains here temporarily |
64 | to ease the transition to the new meaning of YYERROR, for GCC. |
65 | Once GCC version 2 has supplanted version 1, this can go. */ |
66 | |
67 | #define YYFAIL goto yyerrlab |
68 | |
69 | #define YYRECOVERING() (!!yyerrstatus) |
70 | |
71 | #define YYBACKUP(Token, Value) \ |
72 | do \ |
73 | if (yychar == YYEMPTY && yylen == 1) { \ |
74 | yychar = (Token); \ |
75 | yylval = (Value); \ |
76 | yytoken = YYTRANSLATE (yychar); \ |
77 | YYPOPSTACK; \ |
78 | goto yybackup; \ |
79 | } \ |
80 | else { \ |
81 | yyerror ("syntax error: cannot back up"); \ |
82 | YYERROR; \ |
83 | } \ |
84 | while (0) |
85 | |
86 | #define YYTERROR 1 |
87 | #define YYERRCODE 256 |
88 | |
0de566d7 |
89 | /* Enable debugging if requested. */ |
9388183f |
90 | #ifdef DEBUGGING |
0de566d7 |
91 | |
92 | # define yydebug (DEBUG_p_TEST) |
93 | |
94 | # define YYFPRINTF PerlIO_printf |
95 | |
96 | # define YYDPRINTF(Args) \ |
97 | do { \ |
98 | if (yydebug) \ |
99 | YYFPRINTF Args; \ |
100 | } while (0) |
101 | |
9388183f |
102 | # define YYDSYMPRINTF(Title, Token, Value) \ |
0de566d7 |
103 | do { \ |
104 | if (yydebug) { \ |
105 | YYFPRINTF (Perl_debug_log, "%s ", Title); \ |
356f4fed |
106 | yysymprint (aTHX_ Perl_debug_log, Token, Value); \ |
0de566d7 |
107 | YYFPRINTF (Perl_debug_log, "\n"); \ |
108 | } \ |
109 | } while (0) |
110 | |
111 | /*--------------------------------. |
112 | | Print this symbol on YYOUTPUT. | |
113 | `--------------------------------*/ |
114 | |
115 | static void |
356f4fed |
116 | yysymprint(pTHX_ PerlIO * const yyoutput, int yytype, const YYSTYPE * const yyvaluep) |
0de566d7 |
117 | { |
0de566d7 |
118 | if (yytype < YYNTOKENS) { |
119 | YYFPRINTF (yyoutput, "token %s (", yytname[yytype]); |
120 | # ifdef YYPRINT |
121 | YYPRINT (yyoutput, yytoknum[yytype], *yyvaluep); |
9388183f |
122 | # else |
e4584336 |
123 | YYFPRINTF (yyoutput, "0x%"UVxf, (UV)yyvaluep->ival); |
0de566d7 |
124 | # endif |
125 | } |
126 | else |
127 | YYFPRINTF (yyoutput, "nterm %s (", yytname[yytype]); |
128 | |
0de566d7 |
129 | YYFPRINTF (yyoutput, ")"); |
130 | } |
131 | |
132 | |
9388183f |
133 | /* yy_stack_print() |
134 | * print the top 8 items on the parse stack. The args have the same |
135 | * meanings as the local vars in yyparse() of the same name */ |
0de566d7 |
136 | |
137 | static void |
df35152e |
138 | yy_stack_print (pTHX_ const short *yyss, const short *yyssp, const YYSTYPE *yyvs, const char**yyns) |
0de566d7 |
139 | { |
9388183f |
140 | int i; |
141 | int start = 1; |
142 | int count = (int)(yyssp - yyss); |
143 | |
144 | if (count > 8) { |
145 | start = count - 8 + 1; |
146 | count = 8; |
147 | } |
148 | |
149 | PerlIO_printf(Perl_debug_log, "\nindex:"); |
150 | for (i=0; i < count; i++) |
151 | PerlIO_printf(Perl_debug_log, " %8d", start+i); |
152 | PerlIO_printf(Perl_debug_log, "\nstate:"); |
21612876 |
153 | for (i=0; i < count; i++) |
154 | PerlIO_printf(Perl_debug_log, " %8d", yyss[start+i]); |
9388183f |
155 | PerlIO_printf(Perl_debug_log, "\ntoken:"); |
21612876 |
156 | for (i=0; i < count; i++) |
157 | PerlIO_printf(Perl_debug_log, " %8.8s", yyns[start+i]); |
9388183f |
158 | PerlIO_printf(Perl_debug_log, "\nvalue:"); |
21612876 |
159 | for (i=0; i < count; i++) { |
d5c6462e |
160 | switch (yy_type_tab[yystos[yyss[start+i]]]) { |
161 | case toketype_opval: |
21612876 |
162 | PerlIO_printf(Perl_debug_log, " %8.8s", |
163 | yyvs[start+i].opval |
164 | ? PL_op_name[yyvs[start+i].opval->op_type] |
d5c6462e |
165 | : "(NULL)" |
21612876 |
166 | ); |
d5c6462e |
167 | break; |
168 | #ifndef PERL_IN_MADLY_C |
169 | case toketype_p_tkval: |
170 | PerlIO_printf(Perl_debug_log, " %8.8s", |
171 | yyvs[start+i].pval ? yyvs[start+i].pval : "(NULL)"); |
172 | break; |
173 | |
174 | case toketype_i_tkval: |
175 | #endif |
176 | case toketype_ival: |
177 | PerlIO_printf(Perl_debug_log, " %8"IVdf, yyvs[start+i].ival); |
178 | break; |
179 | default: |
21612876 |
180 | PerlIO_printf(Perl_debug_log, " %8"UVxf, (UV)yyvs[start+i].ival); |
d5c6462e |
181 | } |
21612876 |
182 | } |
9388183f |
183 | PerlIO_printf(Perl_debug_log, "\n\n"); |
0de566d7 |
184 | } |
185 | |
9388183f |
186 | # define YY_STACK_PRINT(yyss, yyssp, yyvs, yyns) \ |
0de566d7 |
187 | do { \ |
9388183f |
188 | if (yydebug && DEBUG_v_TEST) \ |
189 | yy_stack_print (aTHX_ (yyss), (yyssp), (yyvs), (yyns)); \ |
0de566d7 |
190 | } while (0) |
191 | |
09bef843 |
192 | |
0de566d7 |
193 | /*------------------------------------------------. |
194 | | Report that the YYRULE is going to be reduced. | |
195 | `------------------------------------------------*/ |
196 | |
197 | static void |
198 | yy_reduce_print (pTHX_ int yyrule) |
199 | { |
200 | int yyi; |
df35152e |
201 | const unsigned int yylineno = yyrline[yyrule]; |
0de566d7 |
202 | YYFPRINTF (Perl_debug_log, "Reducing stack by rule %d (line %u), ", |
203 | yyrule - 1, yylineno); |
204 | /* Print the symbols being reduced, and their result. */ |
205 | for (yyi = yyprhs[yyrule]; 0 <= yyrhs[yyi]; yyi++) |
206 | YYFPRINTF (Perl_debug_log, "%s ", yytname [yyrhs[yyi]]); |
207 | YYFPRINTF (Perl_debug_log, "-> %s\n", yytname [yyr1[yyrule]]); |
208 | } |
209 | |
210 | # define YY_REDUCE_PRINT(Rule) \ |
211 | do { \ |
212 | if (yydebug) \ |
213 | yy_reduce_print (aTHX_ Rule); \ |
214 | } while (0) |
215 | |
216 | #else /* !DEBUGGING */ |
217 | # define YYDPRINTF(Args) |
9388183f |
218 | # define YYDSYMPRINTF(Title, Token, Value) |
219 | # define YY_STACK_PRINT(yyss, yyssp, yyvs, yyns) |
0de566d7 |
220 | # define YY_REDUCE_PRINT(Rule) |
221 | #endif /* !DEBUGGING */ |
222 | |
223 | |
224 | /* YYINITDEPTH -- initial size of the parser's stacks. */ |
225 | #ifndef YYINITDEPTH |
226 | # define YYINITDEPTH 200 |
09bef843 |
227 | #endif |
09bef843 |
228 | |
0de566d7 |
229 | |
230 | #if YYERROR_VERBOSE |
231 | # ifndef yystrlen |
232 | # if defined (__GLIBC__) && defined (_STRING_H) |
233 | # define yystrlen strlen |
234 | # else |
235 | /* Return the length of YYSTR. */ |
236 | static YYSIZE_T |
237 | yystrlen (const char *yystr) |
238 | { |
239 | register const char *yys = yystr; |
240 | |
241 | while (*yys++ != '\0') |
242 | continue; |
243 | |
244 | return yys - yystr - 1; |
245 | } |
246 | # endif |
247 | # endif |
248 | |
249 | # ifndef yystpcpy |
250 | # if defined (__GLIBC__) && defined (_STRING_H) && defined (_GNU_SOURCE) |
251 | # define yystpcpy stpcpy |
252 | # else |
253 | /* Copy YYSRC to YYDEST, returning the address of the terminating '\0' in |
254 | YYDEST. */ |
255 | static char * |
256 | yystpcpy (pTHX_ char *yydest, const char *yysrc) |
257 | { |
258 | register char *yyd = yydest; |
259 | register const char *yys = yysrc; |
260 | |
261 | while ((*yyd++ = *yys++) != '\0') |
262 | continue; |
263 | |
264 | return yyd - 1; |
265 | } |
266 | # endif |
267 | # endif |
268 | |
269 | #endif /* !YYERROR_VERBOSE */ |
270 | |
718a7425 |
271 | |
272 | /* a snapshot of the current stack position variables for use by |
273 | * S_clear_yystack */ |
274 | |
275 | typedef struct { |
276 | short *yyss; |
277 | short *yyssp; |
278 | YYSTYPE *yyvsp; |
279 | AV **yypsp; |
280 | int yylen; |
281 | } yystack_positions; |
282 | |
283 | /* called during cleanup (via SAVEDESTRUCTOR_X) to free any items on the |
284 | * parse stack, thus avoiding leaks if we die */ |
285 | |
286 | static void |
287 | S_clear_yystack(pTHX_ const void *p) |
288 | { |
289 | yystack_positions *y = (yystack_positions*) p; |
290 | |
291 | if (!y->yyss) |
292 | return; |
293 | YYDPRINTF ((Perl_debug_log, "clearing the parse stack\n")); |
294 | y->yyvsp -= y->yylen; /* ignore the tokens that have just been reduced */ |
295 | y->yyssp -= y->yylen; |
296 | y->yypsp -= y->yylen; |
297 | while (y->yyssp > y->yyss) { |
298 | if (yy_type_tab[yystos[*y->yyssp]] == toketype_opval) { |
299 | if (*y->yypsp != PL_comppad) { |
300 | PAD_RESTORE_LOCAL(*y->yypsp); |
301 | } |
302 | YYDPRINTF ((Perl_debug_log, "(freeing op)\n")); |
303 | op_free(y->yyvsp->opval); |
304 | } |
305 | y->yyvsp--; |
306 | y->yyssp--; |
307 | y->yypsp--; |
308 | } |
309 | } |
310 | |
311 | |
312 | |
0de566d7 |
313 | /*----------. |
314 | | yyparse. | |
315 | `----------*/ |
316 | |
79072805 |
317 | int |
bc463c31 |
318 | #ifdef PERL_IN_MADLY_C |
319 | Perl_madparse (pTHX) |
320 | #else |
0de566d7 |
321 | Perl_yyparse (pTHX) |
bc463c31 |
322 | #endif |
79072805 |
323 | { |
97aff369 |
324 | dVAR; |
0de566d7 |
325 | int yychar; /* The lookahead symbol. */ |
326 | YYSTYPE yylval; /* The semantic value of the lookahead symbol. */ |
327 | int yynerrs; /* Number of syntax errors so far. */ |
328 | register int yystate; |
329 | register int yyn; |
330 | int yyresult; |
331 | |
332 | /* Number of tokens to shift before error messages enabled. */ |
333 | int yyerrstatus; |
334 | /* Lookahead token as an internal (translated) token number. */ |
335 | int yytoken = 0; |
336 | |
718a7425 |
337 | /* three stacks and their tools: |
a0288114 |
338 | yyss: related to states, |
339 | yyvs: related to semantic values, |
718a7425 |
340 | yyps: current value of PL_comppad for each state |
341 | |
0de566d7 |
342 | |
343 | Refer to the stacks thru separate pointers, to allow yyoverflow |
344 | to reallocate them elsewhere. */ |
345 | |
346 | /* The state stack. */ |
347 | short *yyss; |
93a17b20 |
348 | register short *yyssp; |
0de566d7 |
349 | |
350 | /* The semantic value stack. */ |
351 | YYSTYPE *yyvs; |
93a17b20 |
352 | register YYSTYPE *yyvsp; |
a0d0e21e |
353 | |
718a7425 |
354 | AV **yyps; |
355 | AV **yypsp; |
356 | |
357 | /* for ease of re-allocation and automatic freeing, have three SVs whose |
0de566d7 |
358 | * SvPVX points to the stacks */ |
718a7425 |
359 | SV *yyss_sv, *yyvs_sv, *yyps_sv; |
360 | SV *ss_save_sv; |
361 | yystack_positions *ss_save; |
362 | |
0de566d7 |
363 | |
9388183f |
364 | #ifdef DEBUGGING |
365 | /* maintain also a stack of token/rule names for debugging with -Dpv */ |
e1ec3a88 |
366 | const char **yyns, **yynsp; |
9388183f |
367 | SV *yyns_sv; |
718a7425 |
368 | # define YYPOPSTACK (yyvsp--, yyssp--, yypsp--, yynsp--) |
9388183f |
369 | #else |
718a7425 |
370 | # define YYPOPSTACK (yyvsp--, yyssp--, yypsp--) |
9388183f |
371 | #endif |
372 | |
0de566d7 |
373 | |
374 | YYSIZE_T yystacksize = YYINITDEPTH; |
375 | |
376 | /* The variables used to return semantic value and location from the |
377 | action routines. */ |
378 | YYSTYPE yyval; |
379 | |
380 | |
381 | /* When reducing, the number of symbols on the RHS of the reduced |
382 | rule. */ |
383 | int yylen; |
384 | |
bc463c31 |
385 | #ifndef PERL_IN_MADLY_C |
386 | # ifdef PERL_MAD |
00e74f14 |
387 | if (PL_madskills) |
388 | return madparse(); |
bc463c31 |
389 | # endif |
81d86705 |
390 | #endif |
391 | |
0de566d7 |
392 | YYDPRINTF ((Perl_debug_log, "Starting parse\n")); |
393 | |
0de566d7 |
394 | ENTER; /* force stack free before we return */ |
12fbd33b |
395 | SAVEVPTR(PL_yycharp); |
396 | SAVEVPTR(PL_yylvalp); |
397 | PL_yycharp = &yychar; /* so PL_yyerror() can access it */ |
398 | PL_yylvalp = &yylval; /* so various functions in toke.c can access it */ |
399 | |
561b68a9 |
400 | yyss_sv = newSV(YYINITDEPTH * sizeof(short)); |
401 | yyvs_sv = newSV(YYINITDEPTH * sizeof(YYSTYPE)); |
718a7425 |
402 | yyps_sv = newSV(YYINITDEPTH * sizeof(AV*)); |
403 | ss_save_sv = newSV(sizeof(yystack_positions)); |
0de566d7 |
404 | SAVEFREESV(yyss_sv); |
405 | SAVEFREESV(yyvs_sv); |
718a7425 |
406 | SAVEFREESV(yyps_sv); |
407 | SAVEFREESV(ss_save_sv); |
0de566d7 |
408 | yyss = (short *) SvPVX(yyss_sv); |
409 | yyvs = (YYSTYPE *) SvPVX(yyvs_sv); |
718a7425 |
410 | yyps = (AV **) SvPVX(yyps_sv); |
411 | ss_save = (yystack_positions *) SvPVX(ss_save_sv); |
412 | |
413 | ss_save->yyss = NULL; /* disarm stack cleanup */ |
414 | /* cleanup the parse stack on premature exit */ |
415 | SAVEDESTRUCTOR_X(S_clear_yystack, (void*) ss_save); |
416 | |
9388183f |
417 | /* note that elements zero of yyvs and yyns are not used */ |
418 | yyssp = yyss; |
419 | yyvsp = yyvs; |
718a7425 |
420 | yypsp = yyps; |
9388183f |
421 | #ifdef DEBUGGING |
561b68a9 |
422 | yyns_sv = newSV(YYINITDEPTH * sizeof(char *)); |
9388183f |
423 | SAVEFREESV(yyns_sv); |
a28509cc |
424 | /* XXX This seems strange to cast char * to char ** */ |
94a11853 |
425 | yyns = (const char **) SvPVX(yyns_sv); |
9388183f |
426 | yynsp = yyns; |
427 | #endif |
79072805 |
428 | |
0de566d7 |
429 | yystate = 0; |
430 | yyerrstatus = 0; |
93a17b20 |
431 | yynerrs = 0; |
0de566d7 |
432 | yychar = YYEMPTY; /* Cause a token to be read. */ |
433 | |
9388183f |
434 | YYDPRINTF ((Perl_debug_log, "Entering state %d\n", yystate)); |
0de566d7 |
435 | |
436 | goto yysetstate; |
437 | |
438 | /*------------------------------------------------------------. |
439 | | yynewstate -- Push a new state, which is found in yystate. | |
440 | `------------------------------------------------------------*/ |
441 | yynewstate: |
442 | /* In all cases, when you get here, the value and location stacks |
443 | have just been pushed. so pushing a state here evens the stacks. |
444 | */ |
445 | yyssp++; |
446 | |
447 | yysetstate: |
448 | *yyssp = yystate; |
449 | |
450 | if (yyss + yystacksize - 1 <= yyssp) { |
451 | /* Get the current used size of the three stacks, in elements. */ |
df35152e |
452 | const YYSIZE_T yysize = yyssp - yyss + 1; |
0de566d7 |
453 | |
454 | /* Extend the stack our own way. */ |
455 | if (YYMAXDEPTH <= yystacksize) |
456 | goto yyoverflowlab; |
457 | yystacksize *= 2; |
458 | if (YYMAXDEPTH < yystacksize) |
459 | yystacksize = YYMAXDEPTH; |
460 | |
461 | SvGROW(yyss_sv, yystacksize * sizeof(short)); |
462 | SvGROW(yyvs_sv, yystacksize * sizeof(YYSTYPE)); |
718a7425 |
463 | SvGROW(yyps_sv, yystacksize * sizeof(AV*)); |
0de566d7 |
464 | yyss = (short *) SvPVX(yyss_sv); |
465 | yyvs = (YYSTYPE *) SvPVX(yyvs_sv); |
718a7425 |
466 | yyps = (AV **) SvPVX(yyps_sv); |
9388183f |
467 | #ifdef DEBUGGING |
468 | SvGROW(yyns_sv, yystacksize * sizeof(char *)); |
a28509cc |
469 | /* XXX This seems strange to cast char * to char ** */ |
94a11853 |
470 | yyns = (const char **) SvPVX(yyns_sv); |
9388183f |
471 | if (! yyns) |
472 | goto yyoverflowlab; |
473 | yynsp = yyns + yysize - 1; |
474 | #endif |
718a7425 |
475 | if (!yyss || ! yyvs || ! yyps) |
0de566d7 |
476 | goto yyoverflowlab; |
477 | |
478 | yyssp = yyss + yysize - 1; |
479 | yyvsp = yyvs + yysize - 1; |
718a7425 |
480 | yypsp = yyps + yysize - 1; |
0de566d7 |
481 | |
482 | |
483 | YYDPRINTF ((Perl_debug_log, "Stack size increased to %lu\n", |
484 | (unsigned long int) yystacksize)); |
485 | |
486 | if (yyss + yystacksize - 1 <= yyssp) |
487 | YYABORT; |
93a17b20 |
488 | } |
0de566d7 |
489 | |
0de566d7 |
490 | goto yybackup; |
491 | |
492 | /*-----------. |
493 | | yybackup. | |
494 | `-----------*/ |
495 | yybackup: |
496 | |
497 | /* Do appropriate processing given the current state. */ |
498 | /* Read a lookahead token if we need one and don't already have one. */ |
499 | /* yyresume: */ |
500 | |
501 | /* First try to decide what to do without reference to lookahead token. */ |
502 | |
503 | yyn = yypact[yystate]; |
504 | if (yyn == YYPACT_NINF) |
505 | goto yydefault; |
506 | |
507 | /* Not known => get a lookahead token if don't already have one. */ |
508 | |
509 | /* YYCHAR is either YYEMPTY or YYEOF or a valid lookahead symbol. */ |
510 | if (yychar == YYEMPTY) { |
511 | YYDPRINTF ((Perl_debug_log, "Reading a token: ")); |
f05e27e5 |
512 | #ifdef PERL_IN_MADLY_C |
00e74f14 |
513 | yychar = PL_madskills ? madlex() : yylex(); |
f05e27e5 |
514 | #else |
12fbd33b |
515 | yychar = yylex(); |
81d86705 |
516 | #endif |
bc463c31 |
517 | |
12fbd33b |
518 | # ifdef EBCDIC |
519 | if (yychar >= 0 && yychar < 255) { |
520 | yychar = NATIVE_TO_ASCII(yychar); |
521 | } |
522 | # endif |
0de566d7 |
523 | } |
524 | |
525 | if (yychar <= YYEOF) { |
526 | yychar = yytoken = YYEOF; |
527 | YYDPRINTF ((Perl_debug_log, "Now at end of input.\n")); |
93a17b20 |
528 | } |
0de566d7 |
529 | else { |
530 | yytoken = YYTRANSLATE (yychar); |
9388183f |
531 | YYDSYMPRINTF ("Next token is", yytoken, &yylval); |
93a17b20 |
532 | } |
771df094 |
533 | |
0de566d7 |
534 | /* If the proper action on seeing token YYTOKEN is to reduce or to |
535 | detect an error, take that action. */ |
536 | yyn += yytoken; |
537 | if (yyn < 0 || YYLAST < yyn || yycheck[yyn] != yytoken) |
538 | goto yydefault; |
539 | yyn = yytable[yyn]; |
540 | if (yyn <= 0) { |
541 | if (yyn == 0 || yyn == YYTABLE_NINF) |
542 | goto yyerrlab; |
543 | yyn = -yyn; |
544 | goto yyreduce; |
545 | } |
7b57b0ea |
546 | |
0de566d7 |
547 | if (yyn == YYFINAL) |
548 | YYACCEPT; |
771df094 |
549 | |
0de566d7 |
550 | /* Shift the lookahead token. */ |
551 | YYDPRINTF ((Perl_debug_log, "Shifting token %s, ", yytname[yytoken])); |
552 | |
553 | /* Discard the token being shifted unless it is eof. */ |
554 | if (yychar != YYEOF) |
555 | yychar = YYEMPTY; |
556 | |
557 | *++yyvsp = yylval; |
718a7425 |
558 | *++yypsp = PL_comppad; |
9388183f |
559 | #ifdef DEBUGGING |
e1ec3a88 |
560 | *++yynsp = (const char *)(yytname[yytoken]); |
9388183f |
561 | #endif |
0de566d7 |
562 | |
563 | |
564 | /* Count tokens shifted since error; after three, turn off error |
565 | status. */ |
566 | if (yyerrstatus) |
567 | yyerrstatus--; |
568 | |
569 | yystate = yyn; |
9388183f |
570 | YYDPRINTF ((Perl_debug_log, "Entering state %d\n", yystate)); |
571 | |
0de566d7 |
572 | goto yynewstate; |
573 | |
574 | |
575 | /*-----------------------------------------------------------. |
576 | | yydefault -- do the default action for the current state. | |
577 | `-----------------------------------------------------------*/ |
578 | yydefault: |
579 | yyn = yydefact[yystate]; |
580 | if (yyn == 0) |
581 | goto yyerrlab; |
582 | goto yyreduce; |
583 | |
584 | |
585 | /*-----------------------------. |
586 | | yyreduce -- Do a reduction. | |
587 | `-----------------------------*/ |
588 | yyreduce: |
589 | /* yyn is the number of a rule to reduce with. */ |
590 | yylen = yyr2[yyn]; |
591 | |
592 | /* If YYLEN is nonzero, implement the default value of the action: |
a0288114 |
593 | "$$ = $1". |
0de566d7 |
594 | |
595 | Otherwise, the following line sets YYVAL to garbage. |
596 | This behavior is undocumented and Bison |
597 | users should not rely upon it. Assigning to YYVAL |
598 | unconditionally makes the parser a bit smaller, and it avoids a |
599 | GCC warning that YYVAL may be used uninitialized. */ |
600 | yyval = yyvsp[1-yylen]; |
601 | |
602 | |
603 | YY_REDUCE_PRINT (yyn); |
718a7425 |
604 | |
605 | /* running external code may trigger a die (eg 'use nosuchmodule'): |
606 | * record the current stack state so that an unwind will |
607 | * free all the pesky OPs lounging around on the parse stack */ |
608 | ss_save->yyss = yyss; |
609 | ss_save->yyssp = yyssp; |
610 | ss_save->yyvsp = yyvsp; |
611 | ss_save->yypsp = yypsp; |
612 | ss_save->yylen = yylen; |
613 | |
0de566d7 |
614 | switch (yyn) { |
615 | |
0de566d7 |
616 | |
617 | #define dep() deprecate("\"do\" to call subroutines") |
f05e27e5 |
618 | |
bc463c31 |
619 | #ifdef PERL_IN_MADLY_C |
f05e27e5 |
620 | # define IVAL(i) (i)->tk_lval.ival |
621 | # define PVAL(p) (p)->tk_lval.pval |
622 | # define TOKEN_GETMAD(a,b,c) token_getmad((a),(b),(c)) |
623 | # define TOKEN_FREE(a) token_free(a) |
624 | # define OP_GETMAD(a,b,c) op_getmad((a),(b),(c)) |
625 | # define IF_MAD(a,b) (a) |
626 | # define DO_MAD(a) a |
627 | # define MAD |
bc463c31 |
628 | #else |
f05e27e5 |
629 | # define IVAL(i) (i) |
630 | # define PVAL(p) (p) |
631 | # define TOKEN_GETMAD(a,b,c) |
632 | # define TOKEN_FREE(a) |
633 | # define OP_GETMAD(a,b,c) |
634 | # define IF_MAD(a,b) (b) |
635 | # define DO_MAD(a) |
636 | # undef MAD |
bc463c31 |
637 | #endif |
7b57b0ea |
638 | |
f05e27e5 |
639 | /* contains all the rule actions; auto-generated from perly.y */ |
640 | #include "perly.act" |
641 | |
93a17b20 |
642 | } |
0de566d7 |
643 | |
644 | yyvsp -= yylen; |
645 | yyssp -= yylen; |
718a7425 |
646 | yypsp -= yylen; |
9388183f |
647 | #ifdef DEBUGGING |
648 | yynsp -= yylen; |
649 | #endif |
0de566d7 |
650 | |
0de566d7 |
651 | |
652 | *++yyvsp = yyval; |
718a7425 |
653 | *++yypsp = PL_comppad; |
2af555bf |
654 | |
9388183f |
655 | #ifdef DEBUGGING |
e1ec3a88 |
656 | *++yynsp = (const char *)(yytname [yyr1[yyn]]); |
9388183f |
657 | #endif |
0de566d7 |
658 | |
a0288114 |
659 | /* Now shift the result of the reduction. Determine what state |
0de566d7 |
660 | that goes to, based on the state we popped back to and the rule |
661 | number reduced by. */ |
662 | |
663 | yyn = yyr1[yyn]; |
664 | |
665 | yystate = yypgoto[yyn - YYNTOKENS] + *yyssp; |
666 | if (0 <= yystate && yystate <= YYLAST && yycheck[yystate] == *yyssp) |
667 | yystate = yytable[yystate]; |
93a17b20 |
668 | else |
0de566d7 |
669 | yystate = yydefgoto[yyn - YYNTOKENS]; |
670 | |
9388183f |
671 | YYDPRINTF ((Perl_debug_log, "Entering state %d\n", yystate)); |
672 | |
673 | #ifdef DEBUGGING |
674 | /* tmp push yystate for stack print; this is normally pushed later in |
675 | * yynewstate */ |
676 | yyssp++; |
677 | *yyssp = yystate; |
678 | YY_STACK_PRINT (yyss, yyssp, yyvs, yyns); |
679 | yyssp--; |
680 | #endif |
681 | |
0de566d7 |
682 | goto yynewstate; |
683 | |
684 | |
685 | /*------------------------------------. |
686 | | yyerrlab -- here on detecting error | |
687 | `------------------------------------*/ |
688 | yyerrlab: |
689 | /* If not already recovering from an error, report this error. */ |
690 | if (!yyerrstatus) { |
691 | ++yynerrs; |
692 | #if YYERROR_VERBOSE |
693 | yyn = yypact[yystate]; |
694 | |
695 | if (YYPACT_NINF < yyn && yyn < YYLAST) { |
696 | YYSIZE_T yysize = 0; |
df35152e |
697 | const int yytype = YYTRANSLATE (yychar); |
0de566d7 |
698 | char *yymsg; |
699 | int yyx, yycount; |
700 | |
701 | yycount = 0; |
702 | /* Start YYX at -YYN if negative to avoid negative indexes in |
703 | YYCHECK. */ |
704 | for (yyx = yyn < 0 ? -yyn : 0; |
705 | yyx < (int) (sizeof (yytname) / sizeof (char *)); yyx++) |
706 | if (yycheck[yyx + yyn] == yyx && yyx != YYTERROR) |
707 | yysize += yystrlen (yytname[yyx]) + 15, yycount++; |
708 | yysize += yystrlen ("syntax error, unexpected ") + 1; |
709 | yysize += yystrlen (yytname[yytype]); |
4b711db3 |
710 | Newx(yymsg, yysize, char *); |
0de566d7 |
711 | if (yymsg != 0) { |
df35152e |
712 | const char *yyp = yystpcpy (yymsg, "syntax error, unexpected "); |
0de566d7 |
713 | yyp = yystpcpy (yyp, yytname[yytype]); |
714 | |
715 | if (yycount < 5) { |
716 | yycount = 0; |
717 | for (yyx = yyn < 0 ? -yyn : 0; |
718 | yyx < (int) (sizeof (yytname) / sizeof (char *)); |
719 | yyx++) |
720 | { |
721 | if (yycheck[yyx + yyn] == yyx && yyx != YYTERROR) { |
722 | const char *yyq = ! yycount ? |
723 | ", expecting " : " or "; |
724 | yyp = yystpcpy (yyp, yyq); |
725 | yyp = yystpcpy (yyp, yytname[yyx]); |
726 | yycount++; |
727 | } |
728 | } |
ecb2f335 |
729 | } |
0de566d7 |
730 | yyerror (yymsg); |
731 | YYSTACK_FREE (yymsg); |
732 | } |
733 | else |
734 | yyerror ("syntax error; also virtual memory exhausted"); |
735 | } |
736 | else |
737 | #endif /* YYERROR_VERBOSE */ |
738 | yyerror ("syntax error"); |
93a17b20 |
739 | } |
0de566d7 |
740 | |
741 | |
742 | if (yyerrstatus == 3) { |
743 | /* If just tried and failed to reuse lookahead token after an |
744 | error, discard it. */ |
745 | |
746 | /* Return failure if at end of input. */ |
747 | if (yychar == YYEOF) { |
748 | /* Pop the error token. */ |
749 | YYPOPSTACK; |
750 | /* Pop the rest of the stack. */ |
751 | while (yyss < yyssp) { |
9388183f |
752 | YYDSYMPRINTF ("Error: popping", yystos[*yyssp], yyvsp); |
718a7425 |
753 | if (yy_type_tab[yystos[*yyssp]] == toketype_opval) { |
0539ab63 |
754 | YYDPRINTF ((Perl_debug_log, "(freeing op)\n")); |
718a7425 |
755 | if (*yypsp != PL_comppad) { |
756 | PAD_RESTORE_LOCAL(*yypsp); |
757 | } |
0539ab63 |
758 | op_free(yyvsp->opval); |
759 | } |
0de566d7 |
760 | YYPOPSTACK; |
761 | } |
762 | YYABORT; |
763 | } |
764 | |
9388183f |
765 | YYDSYMPRINTF ("Error: discarding", yytoken, &yylval); |
0de566d7 |
766 | yychar = YYEMPTY; |
767 | |
93a17b20 |
768 | } |
0de566d7 |
769 | |
770 | /* Else will try to reuse lookahead token after shifting the error |
771 | token. */ |
772 | goto yyerrlab1; |
773 | |
774 | |
775 | /*----------------------------------------------------. |
776 | | yyerrlab1 -- error raised explicitly by an action. | |
777 | `----------------------------------------------------*/ |
778 | yyerrlab1: |
779 | yyerrstatus = 3; /* Each real token shifted decrements this. */ |
780 | |
781 | for (;;) { |
782 | yyn = yypact[yystate]; |
783 | if (yyn != YYPACT_NINF) { |
784 | yyn += YYTERROR; |
785 | if (0 <= yyn && yyn <= YYLAST && yycheck[yyn] == YYTERROR) { |
786 | yyn = yytable[yyn]; |
787 | if (0 < yyn) |
788 | break; |
789 | } |
790 | } |
791 | |
792 | /* Pop the current state because it cannot handle the error token. */ |
793 | if (yyssp == yyss) |
794 | YYABORT; |
795 | |
9388183f |
796 | YYDSYMPRINTF ("Error: popping", yystos[*yyssp], yyvsp); |
718a7425 |
797 | if (yy_type_tab[yystos[*yyssp]] == toketype_opval) { |
0539ab63 |
798 | YYDPRINTF ((Perl_debug_log, "(freeing op)\n")); |
718a7425 |
799 | if (*yypsp != PL_comppad) { |
800 | PAD_RESTORE_LOCAL(*yypsp); |
801 | } |
0539ab63 |
802 | op_free(yyvsp->opval); |
803 | } |
0de566d7 |
804 | yyvsp--; |
718a7425 |
805 | yypsp--; |
9388183f |
806 | #ifdef DEBUGGING |
807 | yynsp--; |
808 | #endif |
0de566d7 |
809 | yystate = *--yyssp; |
810 | |
9388183f |
811 | YY_STACK_PRINT (yyss, yyssp, yyvs, yyns); |
93a17b20 |
812 | } |
0de566d7 |
813 | |
814 | if (yyn == YYFINAL) |
815 | YYACCEPT; |
816 | |
817 | YYDPRINTF ((Perl_debug_log, "Shifting error token, ")); |
818 | |
819 | *++yyvsp = yylval; |
718a7425 |
820 | *++yypsp = PL_comppad; |
9388183f |
821 | #ifdef DEBUGGING |
822 | *++yynsp ="<err>"; |
823 | #endif |
0de566d7 |
824 | |
825 | yystate = yyn; |
9388183f |
826 | YYDPRINTF ((Perl_debug_log, "Entering state %d\n", yystate)); |
827 | |
0de566d7 |
828 | goto yynewstate; |
829 | |
830 | |
831 | /*-------------------------------------. |
832 | | yyacceptlab -- YYACCEPT comes here. | |
833 | `-------------------------------------*/ |
834 | yyacceptlab: |
835 | yyresult = 0; |
836 | goto yyreturn; |
837 | |
838 | /*-----------------------------------. |
839 | | yyabortlab -- YYABORT comes here. | |
840 | `-----------------------------------*/ |
841 | yyabortlab: |
842 | yyresult = 1; |
843 | goto yyreturn; |
844 | |
845 | /*----------------------------------------------. |
846 | | yyoverflowlab -- parser overflow comes here. | |
847 | `----------------------------------------------*/ |
848 | yyoverflowlab: |
849 | yyerror ("parser stack overflow"); |
850 | yyresult = 2; |
851 | /* Fall through. */ |
852 | |
853 | yyreturn: |
854 | |
718a7425 |
855 | ss_save->yyss = NULL; /* disarm parse stack cleanup */ |
c86b7e91 |
856 | LEAVE; /* force stack free before we return */ |
e1f15930 |
857 | |
0de566d7 |
858 | return yyresult; |
e1f15930 |
859 | } |
66610fdd |
860 | |
861 | /* |
862 | * Local variables: |
863 | * c-indentation-style: bsd |
864 | * c-basic-offset: 4 |
865 | * indent-tabs-mode: t |
866 | * End: |
867 | * |
37442d52 |
868 | * ex: set ts=8 sts=4 sw=4 noet: |
869 | */ |