| 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 | |
| 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 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 | |
| 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, const YYSTYPE *yyvaluep) |
| 113 | { |
| 114 | if (yytype < YYNTOKENS) { |
| 115 | YYFPRINTF (yyoutput, "token %s (", yytname[yytype]); |
| 116 | # ifdef YYPRINT |
| 117 | YYPRINT (yyoutput, yytoknum[yytype], *yyvaluep); |
| 118 | # else |
| 119 | YYFPRINTF (yyoutput, "0x%"UVxf, (UV)yyvaluep->ival); |
| 120 | # endif |
| 121 | } |
| 122 | else |
| 123 | YYFPRINTF (yyoutput, "nterm %s (", yytname[yytype]); |
| 124 | |
| 125 | YYFPRINTF (yyoutput, ")"); |
| 126 | } |
| 127 | |
| 128 | |
| 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 */ |
| 132 | |
| 133 | static void |
| 134 | yy_stack_print (pTHX_ const short *yyss, const short *yyssp, const YYSTYPE *yyvs, const char**yyns) |
| 135 | { |
| 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++) |
| 156 | PerlIO_printf(Perl_debug_log, " %8"UVxf, (UV)yyvs->ival); |
| 157 | PerlIO_printf(Perl_debug_log, "\n\n"); |
| 158 | } |
| 159 | |
| 160 | # define YY_STACK_PRINT(yyss, yyssp, yyvs, yyns) \ |
| 161 | do { \ |
| 162 | if (yydebug && DEBUG_v_TEST) \ |
| 163 | yy_stack_print (aTHX_ (yyss), (yyssp), (yyvs), (yyns)); \ |
| 164 | } while (0) |
| 165 | |
| 166 | |
| 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; |
| 175 | const unsigned int yylineno = yyrline[yyrule]; |
| 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) |
| 193 | # define YYDSYMPRINTF(Title, Token, Value) |
| 194 | # define YY_STACK_PRINT(yyss, yyssp, yyvs, yyns) |
| 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 |
| 202 | #endif |
| 203 | |
| 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 | |
| 246 | /*----------. |
| 247 | | yyparse. | |
| 248 | `----------*/ |
| 249 | |
| 250 | int |
| 251 | Perl_yyparse (pTHX) |
| 252 | { |
| 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; |
| 274 | register short *yyssp; |
| 275 | |
| 276 | /* The semantic value stack. */ |
| 277 | YYSTYPE *yyvs; |
| 278 | register YYSTYPE *yyvsp; |
| 279 | |
| 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 | |
| 284 | #ifdef DEBUGGING |
| 285 | /* maintain also a stack of token/rule names for debugging with -Dpv */ |
| 286 | const char **yyns, **yynsp; |
| 287 | SV *yyns_sv; |
| 288 | # define YYPOPSTACK (yyvsp--, yyssp--, yynsp--) |
| 289 | #else |
| 290 | # define YYPOPSTACK (yyvsp--, yyssp--) |
| 291 | #endif |
| 292 | |
| 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 | |
| 307 | ENTER; /* force stack free before we return */ |
| 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 | |
| 313 | yyss_sv = NEWSV(73, YYINITDEPTH * sizeof(short)); |
| 314 | yyvs_sv = NEWSV(73, YYINITDEPTH * sizeof(YYSTYPE)); |
| 315 | SAVEFREESV(yyss_sv); |
| 316 | SAVEFREESV(yyvs_sv); |
| 317 | yyss = (short *) SvPVX(yyss_sv); |
| 318 | yyvs = (YYSTYPE *) SvPVX(yyvs_sv); |
| 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); |
| 325 | /* XXX This seems strange to cast char * to char ** */ |
| 326 | yyns = (const char **) SvPVX(yyns_sv); |
| 327 | yynsp = yyns; |
| 328 | #endif |
| 329 | |
| 330 | yystate = 0; |
| 331 | yyerrstatus = 0; |
| 332 | yynerrs = 0; |
| 333 | yychar = YYEMPTY; /* Cause a token to be read. */ |
| 334 | |
| 335 | |
| 336 | |
| 337 | YYDPRINTF ((Perl_debug_log, "Entering state %d\n", yystate)); |
| 338 | |
| 339 | goto yysetstate; |
| 340 | |
| 341 | /*------------------------------------------------------------. |
| 342 | | yynewstate -- Push a new state, which is found in yystate. | |
| 343 | `------------------------------------------------------------*/ |
| 344 | yynewstate: |
| 345 | /* In all cases, when you get here, the value and location stacks |
| 346 | have just been pushed. so pushing a state here evens the stacks. |
| 347 | */ |
| 348 | yyssp++; |
| 349 | |
| 350 | yysetstate: |
| 351 | *yyssp = yystate; |
| 352 | |
| 353 | if (yyss + yystacksize - 1 <= yyssp) { |
| 354 | /* Get the current used size of the three stacks, in elements. */ |
| 355 | const YYSIZE_T yysize = yyssp - yyss + 1; |
| 356 | |
| 357 | /* Extend the stack our own way. */ |
| 358 | if (YYMAXDEPTH <= yystacksize) |
| 359 | goto yyoverflowlab; |
| 360 | yystacksize *= 2; |
| 361 | if (YYMAXDEPTH < yystacksize) |
| 362 | yystacksize = YYMAXDEPTH; |
| 363 | |
| 364 | SvGROW(yyss_sv, yystacksize * sizeof(short)); |
| 365 | SvGROW(yyvs_sv, yystacksize * sizeof(YYSTYPE)); |
| 366 | yyss = (short *) SvPVX(yyss_sv); |
| 367 | yyvs = (YYSTYPE *) SvPVX(yyvs_sv); |
| 368 | #ifdef DEBUGGING |
| 369 | SvGROW(yyns_sv, yystacksize * sizeof(char *)); |
| 370 | /* XXX This seems strange to cast char * to char ** */ |
| 371 | yyns = (const char **) SvPVX(yyns_sv); |
| 372 | if (! yyns) |
| 373 | goto yyoverflowlab; |
| 374 | yynsp = yyns + yysize - 1; |
| 375 | #endif |
| 376 | if (!yyss || ! yyvs) |
| 377 | goto yyoverflowlab; |
| 378 | |
| 379 | yyssp = yyss + yysize - 1; |
| 380 | yyvsp = yyvs + yysize - 1; |
| 381 | |
| 382 | |
| 383 | YYDPRINTF ((Perl_debug_log, "Stack size increased to %lu\n", |
| 384 | (unsigned long int) yystacksize)); |
| 385 | |
| 386 | if (yyss + yystacksize - 1 <= yyssp) |
| 387 | YYABORT; |
| 388 | } |
| 389 | |
| 390 | goto yybackup; |
| 391 | |
| 392 | /*-----------. |
| 393 | | yybackup. | |
| 394 | `-----------*/ |
| 395 | yybackup: |
| 396 | |
| 397 | /* Do appropriate processing given the current state. */ |
| 398 | /* Read a lookahead token if we need one and don't already have one. */ |
| 399 | /* yyresume: */ |
| 400 | |
| 401 | /* First try to decide what to do without reference to lookahead token. */ |
| 402 | |
| 403 | yyn = yypact[yystate]; |
| 404 | if (yyn == YYPACT_NINF) |
| 405 | goto yydefault; |
| 406 | |
| 407 | /* Not known => get a lookahead token if don't already have one. */ |
| 408 | |
| 409 | /* YYCHAR is either YYEMPTY or YYEOF or a valid lookahead symbol. */ |
| 410 | if (yychar == YYEMPTY) { |
| 411 | YYDPRINTF ((Perl_debug_log, "Reading a token: ")); |
| 412 | yychar = yylex(); |
| 413 | # ifdef EBCDIC |
| 414 | if (yychar >= 0 && yychar < 255) { |
| 415 | yychar = NATIVE_TO_ASCII(yychar); |
| 416 | } |
| 417 | # endif |
| 418 | } |
| 419 | |
| 420 | if (yychar <= YYEOF) { |
| 421 | yychar = yytoken = YYEOF; |
| 422 | YYDPRINTF ((Perl_debug_log, "Now at end of input.\n")); |
| 423 | } |
| 424 | else { |
| 425 | yytoken = YYTRANSLATE (yychar); |
| 426 | YYDSYMPRINTF ("Next token is", yytoken, &yylval); |
| 427 | } |
| 428 | |
| 429 | /* If the proper action on seeing token YYTOKEN is to reduce or to |
| 430 | detect an error, take that action. */ |
| 431 | yyn += yytoken; |
| 432 | if (yyn < 0 || YYLAST < yyn || yycheck[yyn] != yytoken) |
| 433 | goto yydefault; |
| 434 | yyn = yytable[yyn]; |
| 435 | if (yyn <= 0) { |
| 436 | if (yyn == 0 || yyn == YYTABLE_NINF) |
| 437 | goto yyerrlab; |
| 438 | yyn = -yyn; |
| 439 | goto yyreduce; |
| 440 | } |
| 441 | |
| 442 | if (yyn == YYFINAL) |
| 443 | YYACCEPT; |
| 444 | |
| 445 | /* Shift the lookahead token. */ |
| 446 | YYDPRINTF ((Perl_debug_log, "Shifting token %s, ", yytname[yytoken])); |
| 447 | |
| 448 | /* Discard the token being shifted unless it is eof. */ |
| 449 | if (yychar != YYEOF) |
| 450 | yychar = YYEMPTY; |
| 451 | |
| 452 | *++yyvsp = yylval; |
| 453 | #ifdef DEBUGGING |
| 454 | *++yynsp = (const char *)(yytname[yytoken]); |
| 455 | #endif |
| 456 | |
| 457 | |
| 458 | /* Count tokens shifted since error; after three, turn off error |
| 459 | status. */ |
| 460 | if (yyerrstatus) |
| 461 | yyerrstatus--; |
| 462 | |
| 463 | yystate = yyn; |
| 464 | YYDPRINTF ((Perl_debug_log, "Entering state %d\n", yystate)); |
| 465 | |
| 466 | goto yynewstate; |
| 467 | |
| 468 | |
| 469 | /*-----------------------------------------------------------. |
| 470 | | yydefault -- do the default action for the current state. | |
| 471 | `-----------------------------------------------------------*/ |
| 472 | yydefault: |
| 473 | yyn = yydefact[yystate]; |
| 474 | if (yyn == 0) |
| 475 | goto yyerrlab; |
| 476 | goto yyreduce; |
| 477 | |
| 478 | |
| 479 | /*-----------------------------. |
| 480 | | yyreduce -- Do a reduction. | |
| 481 | `-----------------------------*/ |
| 482 | yyreduce: |
| 483 | /* yyn is the number of a rule to reduce with. */ |
| 484 | yylen = yyr2[yyn]; |
| 485 | |
| 486 | /* If YYLEN is nonzero, implement the default value of the action: |
| 487 | "$$ = $1". |
| 488 | |
| 489 | Otherwise, the following line sets YYVAL to garbage. |
| 490 | This behavior is undocumented and Bison |
| 491 | users should not rely upon it. Assigning to YYVAL |
| 492 | unconditionally makes the parser a bit smaller, and it avoids a |
| 493 | GCC warning that YYVAL may be used uninitialized. */ |
| 494 | yyval = yyvsp[1-yylen]; |
| 495 | |
| 496 | |
| 497 | YY_REDUCE_PRINT (yyn); |
| 498 | switch (yyn) { |
| 499 | |
| 500 | /* contains all the rule actions; auto-generated from perly.y */ |
| 501 | |
| 502 | #define dep() deprecate("\"do\" to call subroutines") |
| 503 | #include "perly.act" |
| 504 | |
| 505 | } |
| 506 | |
| 507 | yyvsp -= yylen; |
| 508 | yyssp -= yylen; |
| 509 | #ifdef DEBUGGING |
| 510 | yynsp -= yylen; |
| 511 | #endif |
| 512 | |
| 513 | |
| 514 | *++yyvsp = yyval; |
| 515 | #ifdef DEBUGGING |
| 516 | *++yynsp = (const char *)(yytname [yyr1[yyn]]); |
| 517 | #endif |
| 518 | |
| 519 | /* Now shift the result of the reduction. Determine what state |
| 520 | that goes to, based on the state we popped back to and the rule |
| 521 | number reduced by. */ |
| 522 | |
| 523 | yyn = yyr1[yyn]; |
| 524 | |
| 525 | yystate = yypgoto[yyn - YYNTOKENS] + *yyssp; |
| 526 | if (0 <= yystate && yystate <= YYLAST && yycheck[yystate] == *yyssp) |
| 527 | yystate = yytable[yystate]; |
| 528 | else |
| 529 | yystate = yydefgoto[yyn - YYNTOKENS]; |
| 530 | |
| 531 | YYDPRINTF ((Perl_debug_log, "Entering state %d\n", yystate)); |
| 532 | |
| 533 | #ifdef DEBUGGING |
| 534 | /* tmp push yystate for stack print; this is normally pushed later in |
| 535 | * yynewstate */ |
| 536 | yyssp++; |
| 537 | *yyssp = yystate; |
| 538 | YY_STACK_PRINT (yyss, yyssp, yyvs, yyns); |
| 539 | yyssp--; |
| 540 | #endif |
| 541 | |
| 542 | goto yynewstate; |
| 543 | |
| 544 | |
| 545 | /*------------------------------------. |
| 546 | | yyerrlab -- here on detecting error | |
| 547 | `------------------------------------*/ |
| 548 | yyerrlab: |
| 549 | /* If not already recovering from an error, report this error. */ |
| 550 | if (!yyerrstatus) { |
| 551 | ++yynerrs; |
| 552 | #if YYERROR_VERBOSE |
| 553 | yyn = yypact[yystate]; |
| 554 | |
| 555 | if (YYPACT_NINF < yyn && yyn < YYLAST) { |
| 556 | YYSIZE_T yysize = 0; |
| 557 | const int yytype = YYTRANSLATE (yychar); |
| 558 | char *yymsg; |
| 559 | int yyx, yycount; |
| 560 | |
| 561 | yycount = 0; |
| 562 | /* Start YYX at -YYN if negative to avoid negative indexes in |
| 563 | YYCHECK. */ |
| 564 | for (yyx = yyn < 0 ? -yyn : 0; |
| 565 | yyx < (int) (sizeof (yytname) / sizeof (char *)); yyx++) |
| 566 | if (yycheck[yyx + yyn] == yyx && yyx != YYTERROR) |
| 567 | yysize += yystrlen (yytname[yyx]) + 15, yycount++; |
| 568 | yysize += yystrlen ("syntax error, unexpected ") + 1; |
| 569 | yysize += yystrlen (yytname[yytype]); |
| 570 | Newx(yymsg, yysize, char *); |
| 571 | if (yymsg != 0) { |
| 572 | const char *yyp = yystpcpy (yymsg, "syntax error, unexpected "); |
| 573 | yyp = yystpcpy (yyp, yytname[yytype]); |
| 574 | |
| 575 | if (yycount < 5) { |
| 576 | yycount = 0; |
| 577 | for (yyx = yyn < 0 ? -yyn : 0; |
| 578 | yyx < (int) (sizeof (yytname) / sizeof (char *)); |
| 579 | yyx++) |
| 580 | { |
| 581 | if (yycheck[yyx + yyn] == yyx && yyx != YYTERROR) { |
| 582 | const char *yyq = ! yycount ? |
| 583 | ", expecting " : " or "; |
| 584 | yyp = yystpcpy (yyp, yyq); |
| 585 | yyp = yystpcpy (yyp, yytname[yyx]); |
| 586 | yycount++; |
| 587 | } |
| 588 | } |
| 589 | } |
| 590 | yyerror (yymsg); |
| 591 | YYSTACK_FREE (yymsg); |
| 592 | } |
| 593 | else |
| 594 | yyerror ("syntax error; also virtual memory exhausted"); |
| 595 | } |
| 596 | else |
| 597 | #endif /* YYERROR_VERBOSE */ |
| 598 | yyerror ("syntax error"); |
| 599 | } |
| 600 | |
| 601 | |
| 602 | if (yyerrstatus == 3) { |
| 603 | /* If just tried and failed to reuse lookahead token after an |
| 604 | error, discard it. */ |
| 605 | |
| 606 | /* Return failure if at end of input. */ |
| 607 | if (yychar == YYEOF) { |
| 608 | /* Pop the error token. */ |
| 609 | YYPOPSTACK; |
| 610 | /* Pop the rest of the stack. */ |
| 611 | while (yyss < yyssp) { |
| 612 | YYDSYMPRINTF ("Error: popping", yystos[*yyssp], yyvsp); |
| 613 | YYPOPSTACK; |
| 614 | } |
| 615 | YYABORT; |
| 616 | } |
| 617 | |
| 618 | YYDSYMPRINTF ("Error: discarding", yytoken, &yylval); |
| 619 | yychar = YYEMPTY; |
| 620 | |
| 621 | } |
| 622 | |
| 623 | /* Else will try to reuse lookahead token after shifting the error |
| 624 | token. */ |
| 625 | goto yyerrlab1; |
| 626 | |
| 627 | |
| 628 | /*----------------------------------------------------. |
| 629 | | yyerrlab1 -- error raised explicitly by an action. | |
| 630 | `----------------------------------------------------*/ |
| 631 | yyerrlab1: |
| 632 | yyerrstatus = 3; /* Each real token shifted decrements this. */ |
| 633 | |
| 634 | for (;;) { |
| 635 | yyn = yypact[yystate]; |
| 636 | if (yyn != YYPACT_NINF) { |
| 637 | yyn += YYTERROR; |
| 638 | if (0 <= yyn && yyn <= YYLAST && yycheck[yyn] == YYTERROR) { |
| 639 | yyn = yytable[yyn]; |
| 640 | if (0 < yyn) |
| 641 | break; |
| 642 | } |
| 643 | } |
| 644 | |
| 645 | /* Pop the current state because it cannot handle the error token. */ |
| 646 | if (yyssp == yyss) |
| 647 | YYABORT; |
| 648 | |
| 649 | YYDSYMPRINTF ("Error: popping", yystos[*yyssp], yyvsp); |
| 650 | yyvsp--; |
| 651 | #ifdef DEBUGGING |
| 652 | yynsp--; |
| 653 | #endif |
| 654 | yystate = *--yyssp; |
| 655 | |
| 656 | YY_STACK_PRINT (yyss, yyssp, yyvs, yyns); |
| 657 | } |
| 658 | |
| 659 | if (yyn == YYFINAL) |
| 660 | YYACCEPT; |
| 661 | |
| 662 | YYDPRINTF ((Perl_debug_log, "Shifting error token, ")); |
| 663 | |
| 664 | *++yyvsp = yylval; |
| 665 | #ifdef DEBUGGING |
| 666 | *++yynsp ="<err>"; |
| 667 | #endif |
| 668 | |
| 669 | yystate = yyn; |
| 670 | YYDPRINTF ((Perl_debug_log, "Entering state %d\n", yystate)); |
| 671 | |
| 672 | goto yynewstate; |
| 673 | |
| 674 | |
| 675 | /*-------------------------------------. |
| 676 | | yyacceptlab -- YYACCEPT comes here. | |
| 677 | `-------------------------------------*/ |
| 678 | yyacceptlab: |
| 679 | yyresult = 0; |
| 680 | goto yyreturn; |
| 681 | |
| 682 | /*-----------------------------------. |
| 683 | | yyabortlab -- YYABORT comes here. | |
| 684 | `-----------------------------------*/ |
| 685 | yyabortlab: |
| 686 | yyresult = 1; |
| 687 | goto yyreturn; |
| 688 | |
| 689 | /*----------------------------------------------. |
| 690 | | yyoverflowlab -- parser overflow comes here. | |
| 691 | `----------------------------------------------*/ |
| 692 | yyoverflowlab: |
| 693 | yyerror ("parser stack overflow"); |
| 694 | yyresult = 2; |
| 695 | /* Fall through. */ |
| 696 | |
| 697 | yyreturn: |
| 698 | |
| 699 | LEAVE; /* force stack free before we return */ |
| 700 | |
| 701 | return yyresult; |
| 702 | } |
| 703 | |
| 704 | /* |
| 705 | * Local variables: |
| 706 | * c-indentation-style: bsd |
| 707 | * c-basic-offset: 4 |
| 708 | * indent-tabs-mode: t |
| 709 | * End: |
| 710 | * |
| 711 | * ex: set ts=8 sts=4 sw=4 noet: |
| 712 | */ |