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* data/glr.c (YYRECOVERING): Define to be a function-like macro
[bison.git] / data / yacc.c
1 m4_divert(-1) -*- C -*-
2
3 # Yacc compatible skeleton for Bison
4
5 # Copyright (C) 1984, 1989, 1990, 2000, 2001, 2002, 2003, 2004, 2005, 2006
6 # Free Software Foundation, Inc.
7
8 # This program is free software; you can redistribute it and/or modify
9 # it under the terms of the GNU General Public License as published by
10 # the Free Software Foundation; either version 2 of the License, or
11 # (at your option) any later version.
12
13 # This program is distributed in the hope that it will be useful,
14 # but WITHOUT ANY WARRANTY; without even the implied warranty of
15 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 # GNU General Public License for more details.
17
18 # You should have received a copy of the GNU General Public License
19 # along with this program; if not, write to the Free Software
20 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
21 # 02110-1301 USA
22
23 m4_include(b4_pkgdatadir/[c.m4])
24
25 ## ---------------- ##
26 ## Default values. ##
27 ## ---------------- ##
28
29 # Stack parameters.
30 m4_define_default([b4_stack_depth_max], [10000])
31 m4_define_default([b4_stack_depth_init], [200])
32
33
34 ## ------------------------ ##
35 ## Pure/impure interfaces. ##
36 ## ------------------------ ##
37
38
39 # b4_yacc_pure_if(IF-TRUE, IF-FALSE)
40 # ----------------------------------
41 # Expand IF-TRUE, if %pure-parser and %parse-param, IF-FALSE otherwise.
42 m4_define([b4_yacc_pure_if],
43 [b4_pure_if([m4_ifset([b4_parse_param],
44 [$1], [$2])],
45 [$2])])
46
47
48 # b4_yyerror_args
49 # ---------------
50 # Arguments passed to yyerror: user args plus yylloc.
51 m4_define([b4_yyerror_args],
52 [b4_yacc_pure_if([b4_locations_if([&yylloc, ])])dnl
53 m4_ifset([b4_parse_param], [b4_c_args(b4_parse_param), ])])
54
55
56 # b4_lex_param
57 # ------------
58 # Accumulate in b4_lex_param all the yylex arguments.
59 # b4_lex_param arrives quoted twice, but we want to keep only one level.
60 m4_define([b4_lex_param],
61 m4_dquote(b4_pure_if([[[[YYSTYPE *]], [[&yylval]]][]dnl
62 b4_locations_if([, [[YYLTYPE *], [&yylloc]]])m4_ifdef([b4_lex_param], [, ])])dnl
63 m4_ifdef([b4_lex_param], b4_lex_param)))
64
65
66
67 ## ------------ ##
68 ## Data Types. ##
69 ## ------------ ##
70
71 # b4_int_type(MIN, MAX)
72 # ---------------------
73 # Return the smallest int type able to handle numbers ranging from
74 # MIN to MAX (included). Overwrite the version from c.m4, which
75 # uses only C89 types, so that the user can override the shorter
76 # types, and so that pre-C89 compilers are handled correctly.
77 m4_define([b4_int_type],
78 [m4_if(b4_ints_in($@, [0], [255]), [1], [yytype_uint8],
79 b4_ints_in($@, [-128], [127]), [1], [yytype_int8],
80
81 b4_ints_in($@, [0], [65535]), [1], [yytype_uint16],
82 b4_ints_in($@, [-32768], [32767]), [1], [yytype_int16],
83
84 m4_eval([0 <= $1]), [1], [unsigned int],
85
86 [int])])
87
88
89 ## ----------------- ##
90 ## Semantic Values. ##
91 ## ----------------- ##
92
93
94 # b4_lhs_value([TYPE])
95 # --------------------
96 # Expansion of $<TYPE>$.
97 m4_define([b4_lhs_value],
98 [(yyval[]m4_ifval([$1], [.$1]))])
99
100
101 # b4_rhs_value(RULE-LENGTH, NUM, [TYPE])
102 # --------------------------------------
103 # Expansion of $<TYPE>NUM, where the current rule has RULE-LENGTH
104 # symbols on RHS.
105 m4_define([b4_rhs_value],
106 [(yyvsp@{($2) - ($1)@}m4_ifval([$3], [.$3]))])
107
108
109
110 ## ----------- ##
111 ## Locations. ##
112 ## ----------- ##
113
114 # b4_lhs_location()
115 # -----------------
116 # Expansion of @$.
117 m4_define([b4_lhs_location],
118 [(yyloc)])
119
120
121 # b4_rhs_location(RULE-LENGTH, NUM)
122 # ---------------------------------
123 # Expansion of @NUM, where the current rule has RULE-LENGTH symbols
124 # on RHS.
125 m4_define([b4_rhs_location],
126 [(yylsp@{($2) - ($1)@})])
127
128
129
130 ## --------------------------------------------------------- ##
131 ## Defining symbol actions, e.g., printers and destructors. ##
132 ## --------------------------------------------------------- ##
133
134 # We do want M4 expansion after # for CPP macros.
135 m4_changecom()
136 m4_divert(0)dnl
137 @output @output_parser_name@
138 b4_copyright([Skeleton implementation for Bison's Yacc-like parsers in C],dnl '
139 [1984, 1989, 1990, 2000, 2001, 2002, 2003, 2004, 2005, 2006])[
140
141 /* C LALR(1) parser skeleton written by Richard Stallman, by
142 simplifying the original so-called "semantic" parser. */
143
144 /* All symbols defined below should begin with yy or YY, to avoid
145 infringing on user name space. This should be done even for local
146 variables, as they might otherwise be expanded by user macros.
147 There are some unavoidable exceptions within include files to
148 define necessary library symbols; they are noted "INFRINGES ON
149 USER NAME SPACE" below. */
150
151 ]b4_identification
152 m4_if(b4_prefix, [yy], [],
153 [/* Substitute the variable and function names. */
154 #define yyparse b4_prefix[]parse
155 #define yylex b4_prefix[]lex
156 #define yyerror b4_prefix[]error
157 #define yylval b4_prefix[]lval
158 #define yychar b4_prefix[]char
159 #define yydebug b4_prefix[]debug
160 #define yynerrs b4_prefix[]nerrs
161 b4_locations_if([#define yylloc b4_prefix[]lloc])])[
162
163 ]b4_token_enums_defines(b4_tokens)[
164
165 /* Copy the first part of user declarations. */
166 ]b4_pre_prologue[
167
168 /* Enabling traces. */
169 #ifndef YYDEBUG
170 # define YYDEBUG ]b4_debug_flag[
171 #endif
172
173 /* Enabling verbose error messages. */
174 #ifdef YYERROR_VERBOSE
175 # undef YYERROR_VERBOSE
176 # define YYERROR_VERBOSE 1
177 #else
178 # define YYERROR_VERBOSE ]b4_error_verbose_flag[
179 #endif
180
181 /* Enabling the token table. */
182 #ifndef YYTOKEN_TABLE
183 # define YYTOKEN_TABLE ]b4_token_table[
184 #endif
185
186 #if ! defined YYSTYPE && ! defined YYSTYPE_IS_DECLARED
187 ]m4_ifdef([b4_stype],
188 [typedef union[]m4_bregexp(b4_stype, [^{], [ YYSTYPE])
189 b4_stype
190 /* Line __line__ of yacc.c. */
191 b4_syncline([@oline@], [@ofile@])
192 YYSTYPE;],
193 [typedef int YYSTYPE;])[
194 # define yystype YYSTYPE /* obsolescent; will be withdrawn */
195 # define YYSTYPE_IS_DECLARED 1
196 # define YYSTYPE_IS_TRIVIAL 1
197 #endif
198
199 ]b4_locations_if([#if ! defined YYLTYPE && ! defined YYLTYPE_IS_DECLARED
200 typedef struct YYLTYPE
201 {
202 int first_line;
203 int first_column;
204 int last_line;
205 int last_column;
206 } YYLTYPE;
207 # define yyltype YYLTYPE /* obsolescent; will be withdrawn */
208 # define YYLTYPE_IS_DECLARED 1
209 # define YYLTYPE_IS_TRIVIAL 1
210 #endif
211 ])[
212
213 /* Copy the second part of user declarations. */
214 ]b4_post_prologue
215
216 /* Line __line__ of yacc.c. */
217 b4_syncline([@oline@], [@ofile@])[
218
219 #ifdef short
220 # undef short
221 #endif
222
223 #ifdef YYTYPE_UINT8
224 typedef YYTYPE_UINT8 yytype_uint8;
225 #else
226 typedef unsigned char yytype_uint8;
227 #endif
228
229 #ifdef YYTYPE_INT8
230 typedef YYTYPE_INT8 yytype_int8;
231 #elif ]b4_c_modern[
232 typedef signed char yytype_int8;
233 #else
234 typedef short int yytype_int8;
235 #endif
236
237 #ifdef YYTYPE_UINT16
238 typedef YYTYPE_UINT16 yytype_uint16;
239 #else
240 typedef unsigned short int yytype_uint16;
241 #endif
242
243 #ifdef YYTYPE_INT16
244 typedef YYTYPE_INT16 yytype_int16;
245 #else
246 typedef short int yytype_int16;
247 #endif
248
249 #ifndef YYSIZE_T
250 # ifdef __SIZE_TYPE__
251 # define YYSIZE_T __SIZE_TYPE__
252 # elif defined size_t
253 # define YYSIZE_T size_t
254 # elif ! defined YYSIZE_T && ]b4_c_modern[
255 # include <stddef.h> /* INFRINGES ON USER NAME SPACE */
256 # define YYSIZE_T size_t
257 # else
258 # define YYSIZE_T unsigned int
259 # endif
260 #endif
261
262 #define YYSIZE_MAXIMUM ((YYSIZE_T) -1)
263
264 #ifndef YY_
265 # if YYENABLE_NLS
266 # if ENABLE_NLS
267 # include <libintl.h> /* INFRINGES ON USER NAME SPACE */
268 # define YY_(msgid) dgettext ("bison-runtime", msgid)
269 # endif
270 # endif
271 # ifndef YY_
272 # define YY_(msgid) msgid
273 # endif
274 #endif
275
276 /* Suppress unused-variable warnings by "using" E. */
277 #if ! defined lint || defined __GNUC__
278 # define YYUSE(e) ((void) (e))
279 #else
280 # define YYUSE(e) /* empty */
281 #endif
282
283 /* Identity function, used to suppress warnings about constant conditions. */
284 #ifndef lint
285 # define YYID(n) (n)
286 #else
287 ]b4_c_function_def([YYID], [static int], [[int i], [i]])[
288 {
289 return i;
290 }
291 #endif
292
293 #if ! defined yyoverflow || YYERROR_VERBOSE
294
295 /* The parser invokes alloca or malloc; define the necessary symbols. */
296
297 # ifdef YYSTACK_USE_ALLOCA
298 # if YYSTACK_USE_ALLOCA
299 # ifdef __GNUC__
300 # define YYSTACK_ALLOC __builtin_alloca
301 # elif defined __BUILTIN_VA_ARG_INCR
302 # include <alloca.h> /* INFRINGES ON USER NAME SPACE */
303 # elif defined _AIX
304 # define YYSTACK_ALLOC __alloca
305 # elif defined _MSC_VER
306 # include <malloc.h> /* INFRINGES ON USER NAME SPACE */
307 # define alloca _alloca
308 # else
309 # define YYSTACK_ALLOC alloca
310 # if ! defined _ALLOCA_H && ! defined _STDLIB_H && ]b4_c_modern[
311 # include <stdlib.h> /* INFRINGES ON USER NAME SPACE */
312 # ifndef _STDLIB_H
313 # define _STDLIB_H 1
314 # endif
315 # endif
316 # endif
317 # endif
318 # endif
319
320 # ifdef YYSTACK_ALLOC
321 /* Pacify GCC's `empty if-body' warning. */
322 # define YYSTACK_FREE(Ptr) do { /* empty */; } while (YYID (0))
323 # ifndef YYSTACK_ALLOC_MAXIMUM
324 /* The OS might guarantee only one guard page at the bottom of the stack,
325 and a page size can be as small as 4096 bytes. So we cannot safely
326 invoke alloca (N) if N exceeds 4096. Use a slightly smaller number
327 to allow for a few compiler-allocated temporary stack slots. */
328 # define YYSTACK_ALLOC_MAXIMUM 4032 /* reasonable circa 2006 */
329 # endif
330 # else
331 # define YYSTACK_ALLOC YYMALLOC
332 # define YYSTACK_FREE YYFREE
333 # ifndef YYSTACK_ALLOC_MAXIMUM
334 # define YYSTACK_ALLOC_MAXIMUM YYSIZE_MAXIMUM
335 # endif
336 # if (defined __cplusplus && ! defined _STDLIB_H \
337 && ! ((defined YYMALLOC || defined malloc) \
338 && (defined YYFREE || defined free)))
339 # include <stdlib.h> /* INFRINGES ON USER NAME SPACE */
340 # ifndef _STDLIB_H
341 # define _STDLIB_H 1
342 # endif
343 # endif
344 # ifndef YYMALLOC
345 # define YYMALLOC malloc
346 # if ! defined malloc && ! defined _STDLIB_H && ]b4_c_modern[
347 void *malloc (YYSIZE_T); /* INFRINGES ON USER NAME SPACE */
348 # endif
349 # endif
350 # ifndef YYFREE
351 # define YYFREE free
352 # if ! defined free && ! defined _STDLIB_H && ]b4_c_modern[
353 void free (void *); /* INFRINGES ON USER NAME SPACE */
354 # endif
355 # endif
356 # endif
357 #endif /* ! defined yyoverflow || YYERROR_VERBOSE */
358
359
360 #if (! defined yyoverflow \
361 && (! defined __cplusplus \
362 || (]b4_locations_if([[defined YYLTYPE_IS_TRIVIAL && YYLTYPE_IS_TRIVIAL \
363 && ]])[defined YYSTYPE_IS_TRIVIAL && YYSTYPE_IS_TRIVIAL)))
364
365 /* A type that is properly aligned for any stack member. */
366 union yyalloc
367 {
368 yytype_int16 yyss;
369 YYSTYPE yyvs;
370 ]b4_locations_if([ YYLTYPE yyls;
371 ])dnl
372 [};
373
374 /* The size of the maximum gap between one aligned stack and the next. */
375 # define YYSTACK_GAP_MAXIMUM (sizeof (union yyalloc) - 1)
376
377 /* The size of an array large to enough to hold all stacks, each with
378 N elements. */
379 ]b4_locations_if(
380 [# define YYSTACK_BYTES(N) \
381 ((N) * (sizeof (yytype_int16) + sizeof (YYSTYPE) + sizeof (YYLTYPE)) \
382 + 2 * YYSTACK_GAP_MAXIMUM)],
383 [# define YYSTACK_BYTES(N) \
384 ((N) * (sizeof (yytype_int16) + sizeof (YYSTYPE)) \
385 + YYSTACK_GAP_MAXIMUM)])[
386
387 /* Copy COUNT objects from FROM to TO. The source and destination do
388 not overlap. */
389 # ifndef YYCOPY
390 # if defined __GNUC__ && 1 < __GNUC__
391 # define YYCOPY(To, From, Count) \
392 __builtin_memcpy (To, From, (Count) * sizeof (*(From)))
393 # else
394 # define YYCOPY(To, From, Count) \
395 do \
396 { \
397 YYSIZE_T yyi; \
398 for (yyi = 0; yyi < (Count); yyi++) \
399 (To)[yyi] = (From)[yyi]; \
400 } \
401 while (YYID (0))
402 # endif
403 # endif
404
405 /* Relocate STACK from its old location to the new one. The
406 local variables YYSIZE and YYSTACKSIZE give the old and new number of
407 elements in the stack, and YYPTR gives the new location of the
408 stack. Advance YYPTR to a properly aligned location for the next
409 stack. */
410 # define YYSTACK_RELOCATE(Stack) \
411 do \
412 { \
413 YYSIZE_T yynewbytes; \
414 YYCOPY (&yyptr->Stack, Stack, yysize); \
415 Stack = &yyptr->Stack; \
416 yynewbytes = yystacksize * sizeof (*Stack) + YYSTACK_GAP_MAXIMUM; \
417 yyptr += yynewbytes / sizeof (*yyptr); \
418 } \
419 while (YYID (0))
420
421 #endif
422
423 /* YYFINAL -- State number of the termination state. */
424 #define YYFINAL ]b4_final_state_number[
425 /* YYLAST -- Last index in YYTABLE. */
426 #define YYLAST ]b4_last[
427
428 /* YYNTOKENS -- Number of terminals. */
429 #define YYNTOKENS ]b4_tokens_number[
430 /* YYNNTS -- Number of nonterminals. */
431 #define YYNNTS ]b4_nterms_number[
432 /* YYNRULES -- Number of rules. */
433 #define YYNRULES ]b4_rules_number[
434 /* YYNRULES -- Number of states. */
435 #define YYNSTATES ]b4_states_number[
436
437 /* YYTRANSLATE(YYLEX) -- Bison symbol number corresponding to YYLEX. */
438 #define YYUNDEFTOK ]b4_undef_token_number[
439 #define YYMAXUTOK ]b4_user_token_number_max[
440
441 #define YYTRANSLATE(YYX) \
442 ((unsigned int) (YYX) <= YYMAXUTOK ? yytranslate[YYX] : YYUNDEFTOK)
443
444 /* YYTRANSLATE[YYLEX] -- Bison symbol number corresponding to YYLEX. */
445 static const ]b4_int_type_for([b4_translate])[ yytranslate[] =
446 {
447 ]b4_translate[
448 };
449
450 #if YYDEBUG
451 /* YYPRHS[YYN] -- Index of the first RHS symbol of rule number YYN in
452 YYRHS. */
453 static const ]b4_int_type_for([b4_prhs])[ yyprhs[] =
454 {
455 ]b4_prhs[
456 };
457
458 /* YYRHS -- A `-1'-separated list of the rules' RHS. */
459 static const ]b4_int_type_for([b4_rhs])[ yyrhs[] =
460 {
461 ]b4_rhs[
462 };
463
464 /* YYRLINE[YYN] -- source line where rule number YYN was defined. */
465 static const ]b4_int_type_for([b4_rline])[ yyrline[] =
466 {
467 ]b4_rline[
468 };
469 #endif
470
471 #if YYDEBUG || YYERROR_VERBOSE || YYTOKEN_TABLE
472 /* YYTNAME[SYMBOL-NUM] -- String name of the symbol SYMBOL-NUM.
473 First, the terminals, then, starting at YYNTOKENS, nonterminals. */
474 static const char *const yytname[] =
475 {
476 ]b4_tname[
477 };
478 #endif
479
480 # ifdef YYPRINT
481 /* YYTOKNUM[YYLEX-NUM] -- Internal token number corresponding to
482 token YYLEX-NUM. */
483 static const ]b4_int_type_for([b4_toknum])[ yytoknum[] =
484 {
485 ]b4_toknum[
486 };
487 # endif
488
489 /* YYR1[YYN] -- Symbol number of symbol that rule YYN derives. */
490 static const ]b4_int_type_for([b4_r1])[ yyr1[] =
491 {
492 ]b4_r1[
493 };
494
495 /* YYR2[YYN] -- Number of symbols composing right hand side of rule YYN. */
496 static const ]b4_int_type_for([b4_r2])[ yyr2[] =
497 {
498 ]b4_r2[
499 };
500
501 /* YYDEFACT[STATE-NAME] -- Default rule to reduce with in state
502 STATE-NUM when YYTABLE doesn't specify something else to do. Zero
503 means the default is an error. */
504 static const ]b4_int_type_for([b4_defact])[ yydefact[] =
505 {
506 ]b4_defact[
507 };
508
509 /* YYDEFGOTO[NTERM-NUM]. */
510 static const ]b4_int_type_for([b4_defgoto])[ yydefgoto[] =
511 {
512 ]b4_defgoto[
513 };
514
515 /* YYPACT[STATE-NUM] -- Index in YYTABLE of the portion describing
516 STATE-NUM. */
517 #define YYPACT_NINF ]b4_pact_ninf[
518 static const ]b4_int_type_for([b4_pact])[ yypact[] =
519 {
520 ]b4_pact[
521 };
522
523 /* YYPGOTO[NTERM-NUM]. */
524 static const ]b4_int_type_for([b4_pgoto])[ yypgoto[] =
525 {
526 ]b4_pgoto[
527 };
528
529 /* YYTABLE[YYPACT[STATE-NUM]]. What to do in state STATE-NUM. If
530 positive, shift that token. If negative, reduce the rule which
531 number is the opposite. If zero, do what YYDEFACT says.
532 If YYTABLE_NINF, syntax error. */
533 #define YYTABLE_NINF ]b4_table_ninf[
534 static const ]b4_int_type_for([b4_table])[ yytable[] =
535 {
536 ]b4_table[
537 };
538
539 static const ]b4_int_type_for([b4_check])[ yycheck[] =
540 {
541 ]b4_check[
542 };
543
544 /* YYSTOS[STATE-NUM] -- The (internal number of the) accessing
545 symbol of state STATE-NUM. */
546 static const ]b4_int_type_for([b4_stos])[ yystos[] =
547 {
548 ]b4_stos[
549 };
550
551 #define yyerrok (yyerrstatus = 0)
552 #define yyclearin (yychar = YYEMPTY)
553 #define YYEMPTY (-2)
554 #define YYEOF 0
555
556 #define YYACCEPT goto yyacceptlab
557 #define YYABORT goto yyabortlab
558 #define YYERROR goto yyerrorlab
559
560
561 /* Like YYERROR except do call yyerror. This remains here temporarily
562 to ease the transition to the new meaning of YYERROR, for GCC.
563 Once GCC version 2 has supplanted version 1, this can go. */
564
565 #define YYFAIL goto yyerrlab
566
567 #define YYRECOVERING() (!!yyerrstatus)
568
569 #define YYBACKUP(Token, Value) \
570 do \
571 if (yychar == YYEMPTY && yylen == 1) \
572 { \
573 yychar = (Token); \
574 yylval = (Value); \
575 yytoken = YYTRANSLATE (yychar); \
576 YYPOPSTACK (1); \
577 goto yybackup; \
578 } \
579 else \
580 { \
581 yyerror (]b4_yyerror_args[YY_("syntax error: cannot back up")); \
582 YYERROR; \
583 } \
584 while (YYID (0))
585
586
587 #define YYTERROR 1
588 #define YYERRCODE 256
589
590
591 /* YYLLOC_DEFAULT -- Set CURRENT to span from RHS[1] to RHS[N].
592 If N is 0, then set CURRENT to the empty location which ends
593 the previous symbol: RHS[0] (always defined). */
594
595 #define YYRHSLOC(Rhs, K) ((Rhs)[K])
596 #ifndef YYLLOC_DEFAULT
597 # define YYLLOC_DEFAULT(Current, Rhs, N) \
598 do \
599 if (YYID (N)) \
600 { \
601 (Current).first_line = YYRHSLOC (Rhs, 1).first_line; \
602 (Current).first_column = YYRHSLOC (Rhs, 1).first_column; \
603 (Current).last_line = YYRHSLOC (Rhs, N).last_line; \
604 (Current).last_column = YYRHSLOC (Rhs, N).last_column; \
605 } \
606 else \
607 { \
608 (Current).first_line = (Current).last_line = \
609 YYRHSLOC (Rhs, 0).last_line; \
610 (Current).first_column = (Current).last_column = \
611 YYRHSLOC (Rhs, 0).last_column; \
612 } \
613 while (YYID (0))
614 #endif
615
616
617 /* YY_LOCATION_PRINT -- Print the location on the stream.
618 This macro was not mandated originally: define only if we know
619 we won't break user code: when these are the locations we know. */
620
621 #ifndef YY_LOCATION_PRINT
622 # if YYLTYPE_IS_TRIVIAL
623 # define YY_LOCATION_PRINT(File, Loc) \
624 fprintf (File, "%d.%d-%d.%d", \
625 (Loc).first_line, (Loc).first_column, \
626 (Loc).last_line, (Loc).last_column)
627 # else
628 # define YY_LOCATION_PRINT(File, Loc) ((void) 0)
629 # endif
630 #endif
631
632
633 /* YYLEX -- calling `yylex' with the right arguments. */
634
635 #ifdef YYLEX_PARAM
636 # define YYLEX yylex (]b4_pure_if([&yylval[]b4_locations_if([, &yylloc]), ])[YYLEX_PARAM)
637 #else
638 # define YYLEX ]b4_c_function_call([yylex], [int], b4_lex_param)[
639 #endif
640
641 /* Enable debugging if requested. */
642 #if YYDEBUG
643
644 # ifndef YYFPRINTF
645 # include <stdio.h> /* INFRINGES ON USER NAME SPACE */
646 # define YYFPRINTF fprintf
647 # endif
648
649 # define YYDPRINTF(Args) \
650 do { \
651 if (yydebug) \
652 YYFPRINTF Args; \
653 } while (YYID (0))
654
655 # define YY_SYMBOL_PRINT(Title, Type, Value, Location) \
656 do { \
657 if (yydebug) \
658 { \
659 YYFPRINTF (stderr, "%s ", Title); \
660 yy_symbol_print (stderr, \
661 Type, Value]b4_locations_if([, Location])[]b4_user_args[); \
662 YYFPRINTF (stderr, "\n"); \
663 } \
664 } while (YYID (0))
665
666 ]b4_yy_symbol_print_generate([b4_c_function_def])[
667
668 /*------------------------------------------------------------------.
669 | yy_stack_print -- Print the state stack from its BOTTOM up to its |
670 | TOP (included). |
671 `------------------------------------------------------------------*/
672
673 ]b4_c_function_def([yy_stack_print], [static void],
674 [[yytype_int16 *bottom], [bottom]],
675 [[yytype_int16 *top], [top]])[
676 {
677 YYFPRINTF (stderr, "Stack now");
678 for (; bottom <= top; ++bottom)
679 YYFPRINTF (stderr, " %d", *bottom);
680 YYFPRINTF (stderr, "\n");
681 }
682
683 # define YY_STACK_PRINT(Bottom, Top) \
684 do { \
685 if (yydebug) \
686 yy_stack_print ((Bottom), (Top)); \
687 } while (YYID (0))
688
689
690 /*------------------------------------------------.
691 | Report that the YYRULE is going to be reduced. |
692 `------------------------------------------------*/
693
694 ]b4_c_function_def([yy_reduce_print], [static void],
695 [[YYSTYPE *yyvsp], [yyvsp]],
696 b4_locations_if([[[YYLTYPE *yylsp], [yylsp]],
697 ])[[int yyrule], [yyrule]]m4_ifset([b4_parse_param], [,
698 ])b4_parse_param)[
699 {
700 int yynrhs = yyr2[yyrule];
701 int yyi;
702 unsigned long int yylno = yyrline[yyrule];
703 YYFPRINTF (stderr, "Reducing stack by rule %d (line %lu):\n",
704 yyrule - 1, yylno);
705 /* The symbols being reduced. */
706 for (yyi = 0; yyi < yynrhs; yyi++)
707 {
708 fprintf (stderr, " $%d = ", yyi + 1);
709 yy_symbol_print (stderr, yyrhs[yyprhs[yyrule] + yyi],
710 &]b4_rhs_value(yynrhs, yyi + 1)[
711 ]b4_locations_if([, &]b4_rhs_location(yynrhs, yyi + 1))[]dnl
712 b4_user_args[);
713 fprintf (stderr, "\n");
714 }
715 }
716
717 # define YY_REDUCE_PRINT(Rule) \
718 do { \
719 if (yydebug) \
720 yy_reduce_print (yyvsp, ]b4_locations_if([yylsp, ])[Rule]b4_user_args[); \
721 } while (YYID (0))
722
723 /* Nonzero means print parse trace. It is left uninitialized so that
724 multiple parsers can coexist. */
725 int yydebug;
726 #else /* !YYDEBUG */
727 # define YYDPRINTF(Args)
728 # define YY_SYMBOL_PRINT(Title, Type, Value, Location)
729 # define YY_STACK_PRINT(Bottom, Top)
730 # define YY_REDUCE_PRINT(Rule)
731 #endif /* !YYDEBUG */
732
733
734 /* YYINITDEPTH -- initial size of the parser's stacks. */
735 #ifndef YYINITDEPTH
736 # define YYINITDEPTH ]b4_stack_depth_init[
737 #endif
738
739 /* YYMAXDEPTH -- maximum size the stacks can grow to (effective only
740 if the built-in stack extension method is used).
741
742 Do not make this value too large; the results are undefined if
743 YYSTACK_ALLOC_MAXIMUM < YYSTACK_BYTES (YYMAXDEPTH)
744 evaluated with infinite-precision integer arithmetic. */
745
746 #ifndef YYMAXDEPTH
747 # define YYMAXDEPTH ]b4_stack_depth_max[
748 #endif
749
750 \f
751
752 #if YYERROR_VERBOSE
753
754 # ifndef yystrlen
755 # if defined __GLIBC__ && defined _STRING_H
756 # define yystrlen strlen
757 # else
758 /* Return the length of YYSTR. */
759 ]b4_c_function_def([yystrlen], [static YYSIZE_T],
760 [[const char *yystr], [yystr]])[
761 {
762 YYSIZE_T yylen;
763 for (yylen = 0; yystr[yylen]; yylen++)
764 continue;
765 return yylen;
766 }
767 # endif
768 # endif
769
770 # ifndef yystpcpy
771 # if defined __GLIBC__ && defined _STRING_H && defined _GNU_SOURCE
772 # define yystpcpy stpcpy
773 # else
774 /* Copy YYSRC to YYDEST, returning the address of the terminating '\0' in
775 YYDEST. */
776 ]b4_c_function_def([yystpcpy], [static char *],
777 [[char *yydest], [yydest]], [[const char *yysrc], [yysrc]])[
778 {
779 char *yyd = yydest;
780 const char *yys = yysrc;
781
782 while ((*yyd++ = *yys++) != '\0')
783 continue;
784
785 return yyd - 1;
786 }
787 # endif
788 # endif
789
790 # ifndef yytnamerr
791 /* Copy to YYRES the contents of YYSTR after stripping away unnecessary
792 quotes and backslashes, so that it's suitable for yyerror. The
793 heuristic is that double-quoting is unnecessary unless the string
794 contains an apostrophe, a comma, or backslash (other than
795 backslash-backslash). YYSTR is taken from yytname. If YYRES is
796 null, do not copy; instead, return the length of what the result
797 would have been. */
798 static YYSIZE_T
799 yytnamerr (char *yyres, const char *yystr)
800 {
801 if (*yystr == '"')
802 {
803 YYSIZE_T yyn = 0;
804 char const *yyp = yystr;
805
806 for (;;)
807 switch (*++yyp)
808 {
809 case '\'':
810 case ',':
811 goto do_not_strip_quotes;
812
813 case '\\':
814 if (*++yyp != '\\')
815 goto do_not_strip_quotes;
816 /* Fall through. */
817 default:
818 if (yyres)
819 yyres[yyn] = *yyp;
820 yyn++;
821 break;
822
823 case '"':
824 if (yyres)
825 yyres[yyn] = '\0';
826 return yyn;
827 }
828 do_not_strip_quotes: ;
829 }
830
831 if (! yyres)
832 return yystrlen (yystr);
833
834 return yystpcpy (yyres, yystr) - yyres;
835 }
836 # endif
837
838 /* Copy into YYRESULT an error message about the unexpected token
839 YYCHAR while in state YYSTATE. Return the number of bytes copied,
840 including the terminating null byte. If YYRESULT is null, do not
841 copy anything; just return the number of bytes that would be
842 copied. As a special case, return 0 if an ordinary "syntax error"
843 message will do. Return YYSIZE_MAXIMUM if overflow occurs during
844 size calculation. */
845 static YYSIZE_T
846 yysyntax_error (char *yyresult, int yystate, int yychar)
847 {
848 int yyn = yypact[yystate];
849
850 if (! (YYPACT_NINF < yyn && yyn <= YYLAST))
851 return 0;
852 else
853 {
854 int yytype = YYTRANSLATE (yychar);
855 YYSIZE_T yysize0 = yytnamerr (0, yytname[yytype]);
856 YYSIZE_T yysize = yysize0;
857 YYSIZE_T yysize1;
858 int yysize_overflow = 0;
859 enum { YYERROR_VERBOSE_ARGS_MAXIMUM = 5 };
860 char const *yyarg[YYERROR_VERBOSE_ARGS_MAXIMUM];
861 int yyx;
862
863 # if 0
864 /* This is so xgettext sees the translatable formats that are
865 constructed on the fly. */
866 YY_("syntax error, unexpected %s");
867 YY_("syntax error, unexpected %s, expecting %s");
868 YY_("syntax error, unexpected %s, expecting %s or %s");
869 YY_("syntax error, unexpected %s, expecting %s or %s or %s");
870 YY_("syntax error, unexpected %s, expecting %s or %s or %s or %s");
871 # endif
872 char *yyfmt;
873 char const *yyf;
874 static char const yyunexpected[] = "syntax error, unexpected %s";
875 static char const yyexpecting[] = ", expecting %s";
876 static char const yyor[] = " or %s";
877 char yyformat[sizeof yyunexpected
878 + sizeof yyexpecting - 1
879 + ((YYERROR_VERBOSE_ARGS_MAXIMUM - 2)
880 * (sizeof yyor - 1))];
881 char const *yyprefix = yyexpecting;
882
883 /* Start YYX at -YYN if negative to avoid negative indexes in
884 YYCHECK. */
885 int yyxbegin = yyn < 0 ? -yyn : 0;
886
887 /* Stay within bounds of both yycheck and yytname. */
888 int yychecklim = YYLAST - yyn + 1;
889 int yyxend = yychecklim < YYNTOKENS ? yychecklim : YYNTOKENS;
890 int yycount = 1;
891
892 yyarg[0] = yytname[yytype];
893 yyfmt = yystpcpy (yyformat, yyunexpected);
894
895 for (yyx = yyxbegin; yyx < yyxend; ++yyx)
896 if (yycheck[yyx + yyn] == yyx && yyx != YYTERROR)
897 {
898 if (yycount == YYERROR_VERBOSE_ARGS_MAXIMUM)
899 {
900 yycount = 1;
901 yysize = yysize0;
902 yyformat[sizeof yyunexpected - 1] = '\0';
903 break;
904 }
905 yyarg[yycount++] = yytname[yyx];
906 yysize1 = yysize + yytnamerr (0, yytname[yyx]);
907 yysize_overflow |= (yysize1 < yysize);
908 yysize = yysize1;
909 yyfmt = yystpcpy (yyfmt, yyprefix);
910 yyprefix = yyor;
911 }
912
913 yyf = YY_(yyformat);
914 yysize1 = yysize + yystrlen (yyf);
915 yysize_overflow |= (yysize1 < yysize);
916 yysize = yysize1;
917
918 if (yysize_overflow)
919 return YYSIZE_MAXIMUM;
920
921 if (yyresult)
922 {
923 /* Avoid sprintf, as that infringes on the user's name space.
924 Don't have undefined behavior even if the translation
925 produced a string with the wrong number of "%s"s. */
926 char *yyp = yyresult;
927 int yyi = 0;
928 while ((*yyp = *yyf) != '\0')
929 {
930 if (*yyp == '%' && yyf[1] == 's' && yyi < yycount)
931 {
932 yyp += yytnamerr (yyp, yyarg[yyi++]);
933 yyf += 2;
934 }
935 else
936 {
937 yyp++;
938 yyf++;
939 }
940 }
941 }
942 return yysize;
943 }
944 }
945 #endif /* YYERROR_VERBOSE */
946 \f
947
948 ]b4_yydestruct_generate([b4_c_function_def])[
949 \f
950
951 /* Prevent warnings from -Wmissing-prototypes. */
952
953 #ifdef YYPARSE_PARAM
954 ]b4_c_function_decl([yyparse], [int],
955 [[void *YYPARSE_PARAM], [YYPARSE_PARAM]])[
956 #else /* ! YYPARSE_PARAM */
957 ]b4_c_function_decl([yyparse], [int], b4_parse_param)[
958 #endif /* ! YYPARSE_PARAM */
959
960
961 ]m4_divert_push([KILL])# ======================== M4 code.
962 # b4_declare_parser_variables
963 # ---------------------------
964 # Declare the variables that are global, or local to YYPARSE if
965 # pure-parser.
966 m4_define([b4_declare_parser_variables],
967 [/* The look-ahead symbol. */
968 int yychar;
969
970 /* The semantic value of the look-ahead symbol. */
971 YYSTYPE yylval;
972
973 /* Number of syntax errors so far. */
974 int yynerrs;b4_locations_if([
975 /* Location data for the look-ahead symbol. */
976 YYLTYPE yylloc;])
977 ])
978 m4_divert_pop([KILL])dnl# ====================== End of M4 code.
979
980 b4_pure_if([],
981 [b4_declare_parser_variables])
982
983
984 /*----------.
985 | yyparse. |
986 `----------*/
987
988 #ifdef YYPARSE_PARAM
989 b4_c_function_def([yyparse], [int], [[void *YYPARSE_PARAM], [YYPARSE_PARAM]])
990 #else /* ! YYPARSE_PARAM */
991 b4_c_function_def([yyparse], [int], b4_parse_param)
992 #endif
993 {[
994 ]b4_pure_if([b4_declare_parser_variables])[
995 int yystate;
996 int yyn;
997 int yyresult;
998 /* Number of tokens to shift before error messages enabled. */
999 int yyerrstatus;
1000 /* Look-ahead token as an internal (translated) token number. */
1001 int yytoken = 0;
1002 #if YYERROR_VERBOSE
1003 /* Buffer for error messages, and its allocated size. */
1004 char yymsgbuf[128];
1005 char *yymsg = yymsgbuf;
1006 YYSIZE_T yymsg_alloc = sizeof yymsgbuf;
1007 #endif
1008
1009 /* Three stacks and their tools:
1010 `yyss': related to states,
1011 `yyvs': related to semantic values,
1012 `yyls': related to locations.
1013
1014 Refer to the stacks thru separate pointers, to allow yyoverflow
1015 to reallocate them elsewhere. */
1016
1017 /* The state stack. */
1018 yytype_int16 yyssa[YYINITDEPTH];
1019 yytype_int16 *yyss = yyssa;
1020 yytype_int16 *yyssp;
1021
1022 /* The semantic value stack. */
1023 YYSTYPE yyvsa[YYINITDEPTH];
1024 YYSTYPE *yyvs = yyvsa;
1025 YYSTYPE *yyvsp;
1026
1027 ]b4_locations_if(
1028 [[ /* The location stack. */
1029 YYLTYPE yylsa[YYINITDEPTH];
1030 YYLTYPE *yyls = yylsa;
1031 YYLTYPE *yylsp;
1032 /* The locations where the error started and ended. */
1033 YYLTYPE yyerror_range[2];]])[
1034
1035 #define YYPOPSTACK(N) (yyvsp -= (N), yyssp -= (N)]b4_locations_if([, yylsp -= (N)])[)
1036
1037 YYSIZE_T yystacksize = YYINITDEPTH;
1038
1039 /* The variables used to return semantic value and location from the
1040 action routines. */
1041 YYSTYPE yyval;
1042 ]b4_locations_if([ YYLTYPE yyloc;])[
1043
1044 /* The number of symbols on the RHS of the reduced rule.
1045 Keep to zero when no symbol should be popped. */
1046 int yylen = 0;
1047
1048 YYDPRINTF ((stderr, "Starting parse\n"));
1049
1050 yystate = 0;
1051 yyerrstatus = 0;
1052 yynerrs = 0;
1053 yychar = YYEMPTY; /* Cause a token to be read. */
1054
1055 /* Initialize stack pointers.
1056 Waste one element of value and location stack
1057 so that they stay on the same level as the state stack.
1058 The wasted elements are never initialized. */
1059
1060 yyssp = yyss;
1061 yyvsp = yyvs;
1062 ]b4_locations_if([[ yylsp = yyls;
1063 #if YYLTYPE_IS_TRIVIAL
1064 /* Initialize the default location before parsing starts. */
1065 yylloc.first_line = yylloc.last_line = 1;
1066 yylloc.first_column = yylloc.last_column = 0;
1067 #endif
1068 ]])
1069 m4_ifdef([b4_initial_action], [
1070 m4_pushdef([b4_at_dollar], [m4_define([b4_at_dollar_used])yylloc])dnl
1071 m4_pushdef([b4_dollar_dollar], [m4_define([b4_dollar_dollar_used])yylval])dnl
1072 /* User initialization code. */
1073 b4_initial_action
1074 m4_popdef([b4_dollar_dollar])dnl
1075 m4_popdef([b4_at_dollar])dnl
1076 /* Line __line__ of yacc.c. */
1077 b4_syncline([@oline@], [@ofile@])
1078 ])dnl
1079 m4_ifdef([b4_dollar_dollar_used],[[ yyvsp[0] = yylval;
1080 ]])dnl
1081 m4_ifdef([b4_at_dollar_used], [[ yylsp[0] = yylloc;
1082 ]])dnl
1083 [ goto yysetstate;
1084
1085 /*------------------------------------------------------------.
1086 | yynewstate -- Push a new state, which is found in yystate. |
1087 `------------------------------------------------------------*/
1088 yynewstate:
1089 /* In all cases, when you get here, the value and location stacks
1090 have just been pushed. So pushing a state here evens the stacks. */
1091 yyssp++;
1092
1093 yysetstate:
1094 *yyssp = yystate;
1095
1096 if (yyss + yystacksize - 1 <= yyssp)
1097 {
1098 /* Get the current used size of the three stacks, in elements. */
1099 YYSIZE_T yysize = yyssp - yyss + 1;
1100
1101 #ifdef yyoverflow
1102 {
1103 /* Give user a chance to reallocate the stack. Use copies of
1104 these so that the &'s don't force the real ones into
1105 memory. */
1106 YYSTYPE *yyvs1 = yyvs;
1107 yytype_int16 *yyss1 = yyss;
1108 ]b4_locations_if([ YYLTYPE *yyls1 = yyls;])[
1109
1110 /* Each stack pointer address is followed by the size of the
1111 data in use in that stack, in bytes. This used to be a
1112 conditional around just the two extra args, but that might
1113 be undefined if yyoverflow is a macro. */
1114 yyoverflow (YY_("memory exhausted"),
1115 &yyss1, yysize * sizeof (*yyssp),
1116 &yyvs1, yysize * sizeof (*yyvsp),
1117 ]b4_locations_if([ &yyls1, yysize * sizeof (*yylsp),])[
1118 &yystacksize);
1119 ]b4_locations_if([ yyls = yyls1;])[
1120 yyss = yyss1;
1121 yyvs = yyvs1;
1122 }
1123 #else /* no yyoverflow */
1124 # ifndef YYSTACK_RELOCATE
1125 goto yyexhaustedlab;
1126 # else
1127 /* Extend the stack our own way. */
1128 if (YYMAXDEPTH <= yystacksize)
1129 goto yyexhaustedlab;
1130 yystacksize *= 2;
1131 if (YYMAXDEPTH < yystacksize)
1132 yystacksize = YYMAXDEPTH;
1133
1134 {
1135 yytype_int16 *yyss1 = yyss;
1136 union yyalloc *yyptr =
1137 (union yyalloc *) YYSTACK_ALLOC (YYSTACK_BYTES (yystacksize));
1138 if (! yyptr)
1139 goto yyexhaustedlab;
1140 YYSTACK_RELOCATE (yyss);
1141 YYSTACK_RELOCATE (yyvs);
1142 ]b4_locations_if([ YYSTACK_RELOCATE (yyls);])[
1143 # undef YYSTACK_RELOCATE
1144 if (yyss1 != yyssa)
1145 YYSTACK_FREE (yyss1);
1146 }
1147 # endif
1148 #endif /* no yyoverflow */
1149
1150 yyssp = yyss + yysize - 1;
1151 yyvsp = yyvs + yysize - 1;
1152 ]b4_locations_if([ yylsp = yyls + yysize - 1;])[
1153
1154 YYDPRINTF ((stderr, "Stack size increased to %lu\n",
1155 (unsigned long int) yystacksize));
1156
1157 if (yyss + yystacksize - 1 <= yyssp)
1158 YYABORT;
1159 }
1160
1161 YYDPRINTF ((stderr, "Entering state %d\n", yystate));
1162
1163 goto yybackup;
1164
1165 /*-----------.
1166 | yybackup. |
1167 `-----------*/
1168 yybackup:
1169
1170 /* Do appropriate processing given the current state. Read a
1171 look-ahead token if we need one and don't already have one. */
1172
1173 /* First try to decide what to do without reference to look-ahead token. */
1174 yyn = yypact[yystate];
1175 if (yyn == YYPACT_NINF)
1176 goto yydefault;
1177
1178 /* Not known => get a look-ahead token if don't already have one. */
1179
1180 /* YYCHAR is either YYEMPTY or YYEOF or a valid look-ahead symbol. */
1181 if (yychar == YYEMPTY)
1182 {
1183 YYDPRINTF ((stderr, "Reading a token: "));
1184 yychar = YYLEX;
1185 }
1186
1187 if (yychar <= YYEOF)
1188 {
1189 yychar = yytoken = YYEOF;
1190 YYDPRINTF ((stderr, "Now at end of input.\n"));
1191 }
1192 else
1193 {
1194 yytoken = YYTRANSLATE (yychar);
1195 YY_SYMBOL_PRINT ("Next token is", yytoken, &yylval, &yylloc);
1196 }
1197
1198 /* If the proper action on seeing token YYTOKEN is to reduce or to
1199 detect an error, take that action. */
1200 yyn += yytoken;
1201 if (yyn < 0 || YYLAST < yyn || yycheck[yyn] != yytoken)
1202 goto yydefault;
1203 yyn = yytable[yyn];
1204 if (yyn <= 0)
1205 {
1206 if (yyn == 0 || yyn == YYTABLE_NINF)
1207 goto yyerrlab;
1208 yyn = -yyn;
1209 goto yyreduce;
1210 }
1211
1212 if (yyn == YYFINAL)
1213 YYACCEPT;
1214
1215 /* Count tokens shifted since error; after three, turn off error
1216 status. */
1217 if (yyerrstatus)
1218 yyerrstatus--;
1219
1220 /* Shift the look-ahead token. */
1221 YY_SYMBOL_PRINT ("Shifting", yytoken, &yylval, &yylloc);
1222
1223 /* Discard the shifted token unless it is eof. */
1224 if (yychar != YYEOF)
1225 yychar = YYEMPTY;
1226
1227 yystate = yyn;
1228 *++yyvsp = yylval;
1229 ]b4_locations_if([ *++yylsp = yylloc;])[
1230 goto yynewstate;
1231
1232
1233 /*-----------------------------------------------------------.
1234 | yydefault -- do the default action for the current state. |
1235 `-----------------------------------------------------------*/
1236 yydefault:
1237 yyn = yydefact[yystate];
1238 if (yyn == 0)
1239 goto yyerrlab;
1240 goto yyreduce;
1241
1242
1243 /*-----------------------------.
1244 | yyreduce -- Do a reduction. |
1245 `-----------------------------*/
1246 yyreduce:
1247 /* yyn is the number of a rule to reduce with. */
1248 yylen = yyr2[yyn];
1249
1250 /* If YYLEN is nonzero, implement the default value of the action:
1251 `$$ = $1'.
1252
1253 Otherwise, the following line sets YYVAL to garbage.
1254 This behavior is undocumented and Bison
1255 users should not rely upon it. Assigning to YYVAL
1256 unconditionally makes the parser a bit smaller, and it avoids a
1257 GCC warning that YYVAL may be used uninitialized. */
1258 yyval = yyvsp[1-yylen];
1259
1260 ]b4_locations_if(
1261 [[ /* Default location. */
1262 YYLLOC_DEFAULT (yyloc, (yylsp - yylen), yylen);]])[
1263 YY_REDUCE_PRINT (yyn);
1264 switch (yyn)
1265 {
1266 ]b4_actions
1267 /* Line __line__ of yacc.c. */
1268 b4_syncline([@oline@], [@ofile@])[
1269 default: break;
1270 }
1271 YY_SYMBOL_PRINT ("-> $$ =", yyr1[yyn], &yyval, &yyloc);
1272
1273 YYPOPSTACK (yylen);
1274 yylen = 0;
1275 YY_STACK_PRINT (yyss, yyssp);
1276
1277 *++yyvsp = yyval;
1278 ]b4_locations_if([ *++yylsp = yyloc;])[
1279
1280 /* Now `shift' the result of the reduction. Determine what state
1281 that goes to, based on the state we popped back to and the rule
1282 number reduced by. */
1283
1284 yyn = yyr1[yyn];
1285
1286 yystate = yypgoto[yyn - YYNTOKENS] + *yyssp;
1287 if (0 <= yystate && yystate <= YYLAST && yycheck[yystate] == *yyssp)
1288 yystate = yytable[yystate];
1289 else
1290 yystate = yydefgoto[yyn - YYNTOKENS];
1291
1292 goto yynewstate;
1293
1294
1295 /*------------------------------------.
1296 | yyerrlab -- here on detecting error |
1297 `------------------------------------*/
1298 yyerrlab:
1299 /* If not already recovering from an error, report this error. */
1300 if (!yyerrstatus)
1301 {
1302 ++yynerrs;
1303 #if ! YYERROR_VERBOSE
1304 yyerror (]b4_yyerror_args[YY_("syntax error"));
1305 #else
1306 {
1307 YYSIZE_T yysize = yysyntax_error (0, yystate, yychar);
1308 if (yymsg_alloc < yysize && yymsg_alloc < YYSTACK_ALLOC_MAXIMUM)
1309 {
1310 YYSIZE_T yyalloc = 2 * yysize;
1311 if (! (yysize <= yyalloc && yyalloc <= YYSTACK_ALLOC_MAXIMUM))
1312 yyalloc = YYSTACK_ALLOC_MAXIMUM;
1313 if (yymsg != yymsgbuf)
1314 YYSTACK_FREE (yymsg);
1315 yymsg = (char *) YYSTACK_ALLOC (yyalloc);
1316 if (yymsg)
1317 yymsg_alloc = yyalloc;
1318 else
1319 {
1320 yymsg = yymsgbuf;
1321 yymsg_alloc = sizeof yymsgbuf;
1322 }
1323 }
1324
1325 if (0 < yysize && yysize <= yymsg_alloc)
1326 {
1327 (void) yysyntax_error (yymsg, yystate, yychar);
1328 yyerror (]b4_yyerror_args[yymsg);
1329 }
1330 else
1331 {
1332 yyerror (]b4_yyerror_args[YY_("syntax error"));
1333 if (yysize != 0)
1334 goto yyexhaustedlab;
1335 }
1336 }
1337 #endif
1338 }
1339
1340 ]b4_locations_if([[ yyerror_range[0] = yylloc;]])[
1341
1342 if (yyerrstatus == 3)
1343 {
1344 /* If just tried and failed to reuse look-ahead token after an
1345 error, discard it. */
1346
1347 if (yychar <= YYEOF)
1348 {
1349 /* Return failure if at end of input. */
1350 if (yychar == YYEOF)
1351 YYABORT;
1352 }
1353 else
1354 {
1355 yydestruct ("Error: discarding",
1356 yytoken, &yylval]b4_locations_if([, &yylloc])[]b4_user_args[);
1357 yychar = YYEMPTY;
1358 }
1359 }
1360
1361 /* Else will try to reuse look-ahead token after shifting the error
1362 token. */
1363 goto yyerrlab1;
1364
1365
1366 /*---------------------------------------------------.
1367 | yyerrorlab -- error raised explicitly by YYERROR. |
1368 `---------------------------------------------------*/
1369 yyerrorlab:
1370
1371 /* Pacify compilers like GCC when the user code never invokes
1372 YYERROR and the label yyerrorlab therefore never appears in user
1373 code. */
1374 if (/*CONSTCOND*/ 0)
1375 goto yyerrorlab;
1376
1377 ]b4_locations_if([[ yyerror_range[0] = yylsp[1-yylen];
1378 ]])[ /* Do not reclaim the symbols of the rule which action triggered
1379 this YYERROR. */
1380 YYPOPSTACK (yylen);
1381 yylen = 0;
1382 YY_STACK_PRINT (yyss, yyssp);
1383 yystate = *yyssp;
1384 goto yyerrlab1;
1385
1386
1387 /*-------------------------------------------------------------.
1388 | yyerrlab1 -- common code for both syntax error and YYERROR. |
1389 `-------------------------------------------------------------*/
1390 yyerrlab1:
1391 yyerrstatus = 3; /* Each real token shifted decrements this. */
1392
1393 for (;;)
1394 {
1395 yyn = yypact[yystate];
1396 if (yyn != YYPACT_NINF)
1397 {
1398 yyn += YYTERROR;
1399 if (0 <= yyn && yyn <= YYLAST && yycheck[yyn] == YYTERROR)
1400 {
1401 yyn = yytable[yyn];
1402 if (0 < yyn)
1403 break;
1404 }
1405 }
1406
1407 /* Pop the current state because it cannot handle the error token. */
1408 if (yyssp == yyss)
1409 YYABORT;
1410
1411 ]b4_locations_if([[ yyerror_range[0] = *yylsp;]])[
1412 yydestruct ("Error: popping",
1413 yystos[yystate], yyvsp]b4_locations_if([, yylsp])[]b4_user_args[);
1414 YYPOPSTACK (1);
1415 yystate = *yyssp;
1416 YY_STACK_PRINT (yyss, yyssp);
1417 }
1418
1419 if (yyn == YYFINAL)
1420 YYACCEPT;
1421
1422 *++yyvsp = yylval;
1423 ]b4_locations_if([[
1424 yyerror_range[1] = yylloc;
1425 /* Using YYLLOC is tempting, but would change the location of
1426 the look-ahead. YYLOC is available though. */
1427 YYLLOC_DEFAULT (yyloc, (yyerror_range - 1), 2);
1428 *++yylsp = yyloc;]])[
1429
1430 /* Shift the error token. */
1431 YY_SYMBOL_PRINT ("Shifting", yystos[yyn], yyvsp, yylsp);
1432
1433 yystate = yyn;
1434 goto yynewstate;
1435
1436
1437 /*-------------------------------------.
1438 | yyacceptlab -- YYACCEPT comes here. |
1439 `-------------------------------------*/
1440 yyacceptlab:
1441 yyresult = 0;
1442 goto yyreturn;
1443
1444 /*-----------------------------------.
1445 | yyabortlab -- YYABORT comes here. |
1446 `-----------------------------------*/
1447 yyabortlab:
1448 yyresult = 1;
1449 goto yyreturn;
1450
1451 #ifndef yyoverflow
1452 /*-------------------------------------------------.
1453 | yyexhaustedlab -- memory exhaustion comes here. |
1454 `-------------------------------------------------*/
1455 yyexhaustedlab:
1456 yyerror (]b4_yyerror_args[YY_("memory exhausted"));
1457 yyresult = 2;
1458 /* Fall through. */
1459 #endif
1460
1461 yyreturn:
1462 if (yychar != YYEOF && yychar != YYEMPTY)
1463 yydestruct ("Cleanup: discarding lookahead",
1464 yytoken, &yylval]b4_locations_if([, &yylloc])[]b4_user_args[);
1465 /* Do not reclaim the symbols of the rule which action triggered
1466 this YYABORT or YYACCEPT. */
1467 YYPOPSTACK (yylen);
1468 YY_STACK_PRINT (yyss, yyssp);
1469 while (yyssp != yyss)
1470 {
1471 yydestruct ("Cleanup: popping",
1472 yystos[*yyssp], yyvsp]b4_locations_if([, yylsp])[]b4_user_args[);
1473 YYPOPSTACK (1);
1474 }
1475 #ifndef yyoverflow
1476 if (yyss != yyssa)
1477 YYSTACK_FREE (yyss);
1478 #endif
1479 #if YYERROR_VERBOSE
1480 if (yymsg != yymsgbuf)
1481 YYSTACK_FREE (yymsg);
1482 #endif
1483 /* Make sure YYID is used. */
1484 return YYID (yyresult);
1485 ]}
1486
1487
1488 b4_epilogue
1489 b4_defines_if(
1490 [@output @output_header_name@
1491 b4_copyright([Skeleton interface for Bison's Yacc-like parsers in C],dnl '
1492 [1984, 1989, 1990, 2000, 2001, 2002, 2003, 2004, 2005, 2006])
1493
1494 b4_token_enums_defines(b4_tokens)
1495
1496 #if ! defined YYSTYPE && ! defined YYSTYPE_IS_DECLARED
1497 m4_ifdef([b4_stype],
1498 [typedef union[]m4_bregexp(b4_stype, [^{], [ YYSTYPE])
1499 b4_stype
1500 /* Line __line__ of yacc.c. */
1501 b4_syncline([@oline@], [@ofile@])
1502 YYSTYPE;],
1503 [typedef int YYSTYPE;])
1504 # define yystype YYSTYPE /* obsolescent; will be withdrawn */
1505 # define YYSTYPE_IS_DECLARED 1
1506 # define YYSTYPE_IS_TRIVIAL 1
1507 #endif
1508
1509 b4_pure_if([],
1510 [extern YYSTYPE b4_prefix[]lval;])
1511
1512 b4_locations_if(
1513 [#if ! defined YYLTYPE && ! defined YYLTYPE_IS_DECLARED
1514 typedef struct YYLTYPE
1515 {
1516 int first_line;
1517 int first_column;
1518 int last_line;
1519 int last_column;
1520 } YYLTYPE;
1521 # define yyltype YYLTYPE /* obsolescent; will be withdrawn */
1522 # define YYLTYPE_IS_DECLARED 1
1523 # define YYLTYPE_IS_TRIVIAL 1
1524 #endif
1525
1526 b4_pure_if([],
1527 [extern YYLTYPE b4_prefix[]lloc;])
1528 ])dnl b4_locations_if
1529 ])dnl b4_defines_if
bison