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Ignore YYSTACK_USE_ALLOCA for push parsers since the stacks can't be
[bison.git] / data / push.c
1 -*- C -*-
2
3 # Yacc compatible skeleton for Bison
4
5 # Copyright (C) 1984, 1989, 1990, 2000, 2001, 2002, 2003, 2004, 2005, 2006,
6 # 2007 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 # Handle BISON_USE_PUSH_FOR_PULL for the test suite. So that push parsing
24 # tests function as written, don't let BISON_USE_PUSH_FOR_PULL modify Bison's
25 # behavior at all when push parsing is already requested.
26 b4_use_push_for_pull_if([
27 b4_push_if([
28 m4_define([b4_use_push_for_pull_flag], [[0]])
29 b4_define_flag_if([use_push_for_pull])
30 ], [
31 m4_define([b4_push_flag], [[1]])
32 b4_define_flag_if([push])
33 ])])
34
35 m4_include(b4_pkgdatadir/[c.m4])
36
37 ## ---------------- ##
38 ## Default values. ##
39 ## ---------------- ##
40
41 # Stack parameters.
42 m4_define_default([b4_stack_depth_max], [10000])
43 m4_define_default([b4_stack_depth_init], [200])
44
45
46 ## ------------------------ ##
47 ## Pure/impure interfaces. ##
48 ## ------------------------ ##
49
50
51 # b4_yacc_pure_if(IF-TRUE, IF-FALSE)
52 # ----------------------------------
53 # Expand IF-TRUE, if %pure-parser and %parse-param, IF-FALSE otherwise.
54 m4_define([b4_yacc_pure_if],
55 [b4_pure_if([m4_ifset([b4_parse_param],
56 [$1], [$2])],
57 [$2])])
58
59
60 # b4_yyerror_args
61 # ---------------
62 # Arguments passed to yyerror: user args plus yylloc.
63 m4_define([b4_yyerror_args],
64 [b4_yacc_pure_if([b4_locations_if([&yylloc, ])])dnl
65 m4_ifset([b4_parse_param], [b4_c_args(b4_parse_param), ])])
66
67
68 # b4_lex_param
69 # ------------
70 # Accumulate in b4_lex_param all the yylex arguments.
71 # b4_lex_param arrives quoted twice, but we want to keep only one level.
72 m4_define([b4_lex_param],
73 m4_dquote(b4_pure_if([[[[YYSTYPE *]], [[&yylval]]][]dnl
74 b4_locations_if([, [[YYLTYPE *], [&yylloc]]])m4_ifdef([b4_lex_param], [, ])])dnl
75 m4_ifdef([b4_lex_param], b4_lex_param)))
76
77
78 ## ------------ ##
79 ## Data Types. ##
80 ## ------------ ##
81
82 # b4_int_type(MIN, MAX)
83 # ---------------------
84 # Return the smallest int type able to handle numbers ranging from
85 # MIN to MAX (included). Overwrite the version from c.m4, which
86 # uses only C89 types, so that the user can override the shorter
87 # types, and so that pre-C89 compilers are handled correctly.
88 m4_define([b4_int_type],
89 [m4_if(b4_ints_in($@, [0], [255]), [1], [yytype_uint8],
90 b4_ints_in($@, [-128], [127]), [1], [yytype_int8],
91
92 b4_ints_in($@, [0], [65535]), [1], [yytype_uint16],
93 b4_ints_in($@, [-32768], [32767]), [1], [yytype_int16],
94
95 m4_eval([0 <= $1]), [1], [unsigned int],
96
97 [int])])
98
99
100 ## ----------------- ##
101 ## Semantic Values. ##
102 ## ----------------- ##
103
104
105 # b4_lhs_value([TYPE])
106 # --------------------
107 # Expansion of $<TYPE>$.
108 m4_define([b4_lhs_value],
109 [(yyval[]m4_ifval([$1], [.$1]))])
110
111
112 # b4_rhs_value(RULE-LENGTH, NUM, [TYPE])
113 # --------------------------------------
114 # Expansion of $<TYPE>NUM, where the current rule has RULE-LENGTH
115 # symbols on RHS.
116 m4_define([b4_rhs_value],
117 [(yyvsp@{($2) - ($1)@}m4_ifval([$3], [.$3]))])
118
119
120
121 ## ----------- ##
122 ## Locations. ##
123 ## ----------- ##
124
125 # b4_lhs_location()
126 # -----------------
127 # Expansion of @$.
128 m4_define([b4_lhs_location],
129 [(yyloc)])
130
131
132 # b4_rhs_location(RULE-LENGTH, NUM)
133 # ---------------------------------
134 # Expansion of @NUM, where the current rule has RULE-LENGTH symbols
135 # on RHS.
136 m4_define([b4_rhs_location],
137 [(yylsp@{($2) - ($1)@})])
138
139
140
141 ## --------------------------------------------------------- ##
142 ## Defining symbol actions, e.g., printers and destructors. ##
143 ## --------------------------------------------------------- ##
144
145 # We do want M4 expansion after # for CPP macros.
146 m4_changecom()
147 m4_divert_push(0)dnl
148 @output(b4_parser_file_name@)
149 b4_copyright([Skeleton implementation for Bison's Yacc-like parsers in C],dnl '
150 [1984, 1989, 1990, 2000, 2001, 2002, 2003, 2004, 2005, 2006])[
151
152 /* C LALR(1) parser skeleton written by Richard Stallman, by
153 simplifying the original so-called "semantic" parser. */
154
155 /* All symbols defined below should begin with yy or YY, to avoid
156 infringing on user name space. This should be done even for local
157 variables, as they might otherwise be expanded by user macros.
158 There are some unavoidable exceptions within include files to
159 define necessary library symbols; they are noted "INFRINGES ON
160 USER NAME SPACE" below. */
161
162 ]b4_identification
163 b4_get_percent_code([[top]])[]dnl
164 m4_if(b4_prefix, [yy], [],
165 [[/* Substitute the variable and function names. */
166 ]b4_pull_if([[#define yyparse ]b4_prefix[parse
167 ]])b4_push_if([[#define yypush_parse ]b4_prefix[push_parse
168 ]b4_pull_if([[#define yypull_parse ]b4_prefix[pull_parse
169 ]])[#define yypstate_new ]b4_prefix[pstate_new
170 #define yypstate_delete ]b4_prefix[pstate_delete
171 #define yypstate ]b4_prefix[pstate
172 ]])[#define yylex ]b4_prefix[lex
173 #define yyerror ]b4_prefix[error
174 #define yylval ]b4_prefix[lval
175 #define yychar ]b4_prefix[char
176 #define yydebug ]b4_prefix[debug
177 #define yynerrs ]b4_prefix[nerrs
178 ]b4_locations_if([[#define yylloc ]b4_prefix[lloc]])])[
179
180 /* Copy the first part of user declarations. */
181 ]b4_user_pre_prologue[
182
183 /* Enabling traces. */
184 #ifndef YYDEBUG
185 # define YYDEBUG ]b4_debug_flag[
186 #endif
187
188 /* Enabling verbose error messages. */
189 #ifdef YYERROR_VERBOSE
190 # undef YYERROR_VERBOSE
191 # define YYERROR_VERBOSE 1
192 #else
193 # define YYERROR_VERBOSE ]b4_error_verbose_flag[
194 #endif
195
196 /* Enabling the token table. */
197 #ifndef YYTOKEN_TABLE
198 # define YYTOKEN_TABLE ]b4_token_table[
199 #endif
200
201 ]b4_get_percent_code([[requires]])[]dnl
202
203 b4_token_enums_defines(b4_tokens)[
204
205 #if ! defined YYSTYPE && ! defined YYSTYPE_IS_DECLARED
206 ]m4_ifdef([b4_stype],
207 [[typedef union ]b4_union_name[
208 {
209 ]b4_user_stype[
210 } YYSTYPE;
211 # define YYSTYPE_IS_TRIVIAL 1]],
212 [m4_if(b4_tag_seen_flag, 0,
213 [[typedef int YYSTYPE;
214 # define YYSTYPE_IS_TRIVIAL 1]])])[
215 # define yystype YYSTYPE /* obsolescent; will be withdrawn */
216 # define YYSTYPE_IS_DECLARED 1
217 #endif
218
219 ]b4_locations_if([#if ! defined YYLTYPE && ! defined YYLTYPE_IS_DECLARED
220 typedef struct YYLTYPE
221 {
222 int first_line;
223 int first_column;
224 int last_line;
225 int last_column;
226 } YYLTYPE;
227 # define yyltype YYLTYPE /* obsolescent; will be withdrawn */
228 # define YYLTYPE_IS_DECLARED 1
229 # define YYLTYPE_IS_TRIVIAL 1
230 #endif])
231
232 b4_push_if([[#ifndef YYPUSH_DECLS
233 # define YYPUSH_DECLS
234 struct yypstate;
235 typedef struct yypstate yypstate;
236 enum { YYPUSH_MORE = 4 };
237
238 ]b4_pull_if([b4_c_function_decl([[yyparse]], [[int]], b4_parse_param)
239 ])b4_c_function_decl([[yypush_parse]], [[int]],
240 [[[yypstate *yyps]], [[yyps]]]b4_pure_if([,
241 [[[int yypushed_char]], [[yypushed_char]]],
242 [[[YYSTYPE const *yypushed_val]], [[yypushed_val]]]b4_locations_if([,
243 [[[YYLTYPE const *yypushed_loc]], [[yypushed_loc]]]])])m4_ifset([b4_parse_param], [,
244 b4_parse_param]))
245 b4_pull_if([b4_c_function_decl([[yypull_parse]], [[int]],
246 [[[yypstate *yyps]], [[yyps]]]m4_ifset([b4_parse_param], [,
247 b4_parse_param]))])
248 b4_c_function_decl([[yypstate_new]], [[yypstate *]], [[[void]], []])
249 b4_c_function_decl([[yypstate_delete]], [[void]],
250 [[[yypstate *yyps]], [[yyps]]])[
251 #endif
252 ]])
253 b4_get_percent_code([[provides]])[]dnl
254
255 [/* Copy the second part of user declarations. */
256 ]b4_user_post_prologue
257 b4_get_percent_code[]dnl
258
259 [#ifdef short
260 # undef short
261 #endif
262
263 #ifdef YYTYPE_UINT8
264 typedef YYTYPE_UINT8 yytype_uint8;
265 #else
266 typedef unsigned char yytype_uint8;
267 #endif
268
269 #ifdef YYTYPE_INT8
270 typedef YYTYPE_INT8 yytype_int8;
271 #elif ]b4_c_modern[
272 typedef signed char yytype_int8;
273 #else
274 typedef short int yytype_int8;
275 #endif
276
277 #ifdef YYTYPE_UINT16
278 typedef YYTYPE_UINT16 yytype_uint16;
279 #else
280 typedef unsigned short int yytype_uint16;
281 #endif
282
283 #ifdef YYTYPE_INT16
284 typedef YYTYPE_INT16 yytype_int16;
285 #else
286 typedef short int yytype_int16;
287 #endif
288
289 #ifndef YYSIZE_T
290 # ifdef __SIZE_TYPE__
291 # define YYSIZE_T __SIZE_TYPE__
292 # elif defined size_t
293 # define YYSIZE_T size_t
294 # elif ! defined YYSIZE_T && ]b4_c_modern[
295 # include <stddef.h> /* INFRINGES ON USER NAME SPACE */
296 # define YYSIZE_T size_t
297 # else
298 # define YYSIZE_T unsigned int
299 # endif
300 #endif
301
302 #define YYSIZE_MAXIMUM ((YYSIZE_T) -1)
303
304 #ifndef YY_
305 # if YYENABLE_NLS
306 # if ENABLE_NLS
307 # include <libintl.h> /* INFRINGES ON USER NAME SPACE */
308 # define YY_(msgid) dgettext ("bison-runtime", msgid)
309 # endif
310 # endif
311 # ifndef YY_
312 # define YY_(msgid) msgid
313 # endif
314 #endif
315
316 /* Suppress unused-variable warnings by "using" E. */
317 #if ! defined lint || defined __GNUC__
318 # define YYUSE(e) ((void) (e))
319 #else
320 # define YYUSE(e) /* empty */
321 #endif
322
323 /* Identity function, used to suppress warnings about constant conditions. */
324 #ifndef lint
325 # define YYID(n) (n)
326 #else
327 ]b4_c_function_def([YYID], [static int], [[int yyi], [yyi]])[
328 {
329 return yyi;
330 }
331 #endif
332
333 #if ! defined yyoverflow || YYERROR_VERBOSE
334
335 ]b4_push_if([],
336 [[/* The parser invokes alloca or malloc; define the necessary symbols. */
337
338 # ifdef YYSTACK_USE_ALLOCA
339 # if YYSTACK_USE_ALLOCA
340 # ifdef __GNUC__
341 # define YYSTACK_ALLOC __builtin_alloca
342 # elif defined __BUILTIN_VA_ARG_INCR
343 # include <alloca.h> /* INFRINGES ON USER NAME SPACE */
344 # elif defined _AIX
345 # define YYSTACK_ALLOC __alloca
346 # elif defined _MSC_VER
347 # include <malloc.h> /* INFRINGES ON USER NAME SPACE */
348 # define alloca _alloca
349 # else
350 # define YYSTACK_ALLOC alloca
351 # if ! defined _ALLOCA_H && ! defined _STDLIB_H && ]b4_c_modern[
352 # include <stdlib.h> /* INFRINGES ON USER NAME SPACE */
353 # ifndef _STDLIB_H
354 # define _STDLIB_H 1
355 # endif
356 # endif
357 # endif
358 # endif
359 # endif
360
361 ]])dnl
362 [# ifdef YYSTACK_ALLOC
363 /* Pacify GCC's `empty if-body' warning. */
364 # define YYSTACK_FREE(Ptr) do { /* empty */; } while (YYID (0))
365 # ifndef YYSTACK_ALLOC_MAXIMUM
366 /* The OS might guarantee only one guard page at the bottom of the stack,
367 and a page size can be as small as 4096 bytes. So we cannot safely
368 invoke alloca (N) if N exceeds 4096. Use a slightly smaller number
369 to allow for a few compiler-allocated temporary stack slots. */
370 # define YYSTACK_ALLOC_MAXIMUM 4032 /* reasonable circa 2006 */
371 # endif
372 # else
373 # define YYSTACK_ALLOC YYMALLOC
374 # define YYSTACK_FREE YYFREE
375 # ifndef YYSTACK_ALLOC_MAXIMUM
376 # define YYSTACK_ALLOC_MAXIMUM YYSIZE_MAXIMUM
377 # endif
378 # if (defined __cplusplus && ! defined _STDLIB_H \
379 && ! ((defined YYMALLOC || defined malloc) \
380 && (defined YYFREE || defined free)))
381 # include <stdlib.h> /* INFRINGES ON USER NAME SPACE */
382 # ifndef _STDLIB_H
383 # define _STDLIB_H 1
384 # endif
385 # endif
386 # ifndef YYMALLOC
387 # define YYMALLOC malloc
388 # if ! defined malloc && ! defined _STDLIB_H && ]b4_c_modern[
389 void *malloc (YYSIZE_T); /* INFRINGES ON USER NAME SPACE */
390 # endif
391 # endif
392 # ifndef YYFREE
393 # define YYFREE free
394 # if ! defined free && ! defined _STDLIB_H && ]b4_c_modern[
395 void free (void *); /* INFRINGES ON USER NAME SPACE */
396 # endif
397 # endif
398 # endif
399 #endif /* ! defined yyoverflow || YYERROR_VERBOSE */
400
401
402 #if (! defined yyoverflow \
403 && (! defined __cplusplus \
404 || (]b4_locations_if([[defined YYLTYPE_IS_TRIVIAL && YYLTYPE_IS_TRIVIAL \
405 && ]])[defined YYSTYPE_IS_TRIVIAL && YYSTYPE_IS_TRIVIAL)))
406
407 /* A type that is properly aligned for any stack member. */
408 union yyalloc
409 {
410 yytype_int16 yyss_alloc;
411 YYSTYPE yyvs_alloc;
412 ]b4_locations_if([ YYLTYPE yyls_alloc;
413 ])dnl
414 [};
415
416 /* The size of the maximum gap between one aligned stack and the next. */
417 # define YYSTACK_GAP_MAXIMUM (sizeof (union yyalloc) - 1)
418
419 /* The size of an array large to enough to hold all stacks, each with
420 N elements. */
421 ]b4_locations_if(
422 [# define YYSTACK_BYTES(N) \
423 ((N) * (sizeof (yytype_int16) + sizeof (YYSTYPE) + sizeof (YYLTYPE)) \
424 + 2 * YYSTACK_GAP_MAXIMUM)],
425 [# define YYSTACK_BYTES(N) \
426 ((N) * (sizeof (yytype_int16) + sizeof (YYSTYPE)) \
427 + YYSTACK_GAP_MAXIMUM)])[
428
429 /* Copy COUNT objects from FROM to TO. The source and destination do
430 not overlap. */
431 # ifndef YYCOPY
432 # if defined __GNUC__ && 1 < __GNUC__
433 # define YYCOPY(To, From, Count) \
434 __builtin_memcpy (To, From, (Count) * sizeof (*(From)))
435 # else
436 # define YYCOPY(To, From, Count) \
437 do \
438 { \
439 YYSIZE_T yyi; \
440 for (yyi = 0; yyi < (Count); yyi++) \
441 (To)[yyi] = (From)[yyi]; \
442 } \
443 while (YYID (0))
444 # endif
445 # endif
446
447 /* Relocate STACK from its old location to the new one. The
448 local variables YYSIZE and YYSTACKSIZE give the old and new number of
449 elements in the stack, and YYPTR gives the new location of the
450 stack. Advance YYPTR to a properly aligned location for the next
451 stack. */
452 # define YYSTACK_RELOCATE(Stack_alloc, Stack) \
453 do \
454 { \
455 YYSIZE_T yynewbytes; \
456 YYCOPY (&yyptr->Stack_alloc, Stack, yysize); \
457 Stack = &yyptr->Stack_alloc; \
458 yynewbytes = yystacksize * sizeof (*Stack) + YYSTACK_GAP_MAXIMUM; \
459 yyptr += yynewbytes / sizeof (*yyptr); \
460 } \
461 while (YYID (0))
462
463 #endif
464
465 /* YYFINAL -- State number of the termination state. */
466 #define YYFINAL ]b4_final_state_number[
467 /* YYLAST -- Last index in YYTABLE. */
468 #define YYLAST ]b4_last[
469
470 /* YYNTOKENS -- Number of terminals. */
471 #define YYNTOKENS ]b4_tokens_number[
472 /* YYNNTS -- Number of nonterminals. */
473 #define YYNNTS ]b4_nterms_number[
474 /* YYNRULES -- Number of rules. */
475 #define YYNRULES ]b4_rules_number[
476 /* YYNRULES -- Number of states. */
477 #define YYNSTATES ]b4_states_number[
478
479 /* YYTRANSLATE(YYLEX) -- Bison symbol number corresponding to YYLEX. */
480 #define YYUNDEFTOK ]b4_undef_token_number[
481 #define YYMAXUTOK ]b4_user_token_number_max[
482
483 #define YYTRANSLATE(YYX) \
484 ((unsigned int) (YYX) <= YYMAXUTOK ? yytranslate[YYX] : YYUNDEFTOK)
485
486 /* YYTRANSLATE[YYLEX] -- Bison symbol number corresponding to YYLEX. */
487 static const ]b4_int_type_for([b4_translate])[ yytranslate[] =
488 {
489 ]b4_translate[
490 };
491
492 #if YYDEBUG
493 /* YYPRHS[YYN] -- Index of the first RHS symbol of rule number YYN in
494 YYRHS. */
495 static const ]b4_int_type_for([b4_prhs])[ yyprhs[] =
496 {
497 ]b4_prhs[
498 };
499
500 /* YYRHS -- A `-1'-separated list of the rules' RHS. */
501 static const ]b4_int_type_for([b4_rhs])[ yyrhs[] =
502 {
503 ]b4_rhs[
504 };
505
506 /* YYRLINE[YYN] -- source line where rule number YYN was defined. */
507 static const ]b4_int_type_for([b4_rline])[ yyrline[] =
508 {
509 ]b4_rline[
510 };
511 #endif
512
513 #if YYDEBUG || YYERROR_VERBOSE || YYTOKEN_TABLE
514 /* YYTNAME[SYMBOL-NUM] -- String name of the symbol SYMBOL-NUM.
515 First, the terminals, then, starting at YYNTOKENS, nonterminals. */
516 static const char *const yytname[] =
517 {
518 ]b4_tname[
519 };
520 #endif
521
522 # ifdef YYPRINT
523 /* YYTOKNUM[YYLEX-NUM] -- Internal token number corresponding to
524 token YYLEX-NUM. */
525 static const ]b4_int_type_for([b4_toknum])[ yytoknum[] =
526 {
527 ]b4_toknum[
528 };
529 # endif
530
531 /* YYR1[YYN] -- Symbol number of symbol that rule YYN derives. */
532 static const ]b4_int_type_for([b4_r1])[ yyr1[] =
533 {
534 ]b4_r1[
535 };
536
537 /* YYR2[YYN] -- Number of symbols composing right hand side of rule YYN. */
538 static const ]b4_int_type_for([b4_r2])[ yyr2[] =
539 {
540 ]b4_r2[
541 };
542
543 /* YYDEFACT[STATE-NAME] -- Default rule to reduce with in state
544 STATE-NUM when YYTABLE doesn't specify something else to do. Zero
545 means the default is an error. */
546 static const ]b4_int_type_for([b4_defact])[ yydefact[] =
547 {
548 ]b4_defact[
549 };
550
551 /* YYDEFGOTO[NTERM-NUM]. */
552 static const ]b4_int_type_for([b4_defgoto])[ yydefgoto[] =
553 {
554 ]b4_defgoto[
555 };
556
557 /* YYPACT[STATE-NUM] -- Index in YYTABLE of the portion describing
558 STATE-NUM. */
559 #define YYPACT_NINF ]b4_pact_ninf[
560 static const ]b4_int_type_for([b4_pact])[ yypact[] =
561 {
562 ]b4_pact[
563 };
564
565 /* YYPGOTO[NTERM-NUM]. */
566 static const ]b4_int_type_for([b4_pgoto])[ yypgoto[] =
567 {
568 ]b4_pgoto[
569 };
570
571 /* YYTABLE[YYPACT[STATE-NUM]]. What to do in state STATE-NUM. If
572 positive, shift that token. If negative, reduce the rule which
573 number is the opposite. If zero, do what YYDEFACT says.
574 If YYTABLE_NINF, syntax error. */
575 #define YYTABLE_NINF ]b4_table_ninf[
576 static const ]b4_int_type_for([b4_table])[ yytable[] =
577 {
578 ]b4_table[
579 };
580
581 static const ]b4_int_type_for([b4_check])[ yycheck[] =
582 {
583 ]b4_check[
584 };
585
586 /* YYSTOS[STATE-NUM] -- The (internal number of the) accessing
587 symbol of state STATE-NUM. */
588 static const ]b4_int_type_for([b4_stos])[ yystos[] =
589 {
590 ]b4_stos[
591 };
592
593 #define yyerrok (yyerrstatus = 0)
594 #define yyclearin (yychar = YYEMPTY)
595 #define YYEMPTY (-2)
596 #define YYEOF 0
597
598 #define YYACCEPT goto yyacceptlab
599 #define YYABORT goto yyabortlab
600 #define YYERROR goto yyerrorlab
601
602
603 /* Like YYERROR except do call yyerror. This remains here temporarily
604 to ease the transition to the new meaning of YYERROR, for GCC.
605 Once GCC version 2 has supplanted version 1, this can go. */
606
607 #define YYFAIL goto yyerrlab
608
609 #define YYRECOVERING() (!!yyerrstatus)
610
611 #define YYBACKUP(Token, Value) \
612 do \
613 if (yychar == YYEMPTY && yylen == 1) \
614 { \
615 yychar = (Token); \
616 yylval = (Value); \
617 yytoken = YYTRANSLATE (yychar); \
618 YYPOPSTACK (1); \
619 goto yybackup; \
620 } \
621 else \
622 { \
623 yyerror (]b4_yyerror_args[YY_("syntax error: cannot back up")); \
624 YYERROR; \
625 } \
626 while (YYID (0))
627
628
629 #define YYTERROR 1
630 #define YYERRCODE 256
631
632
633 /* YYLLOC_DEFAULT -- Set CURRENT to span from RHS[1] to RHS[N].
634 If N is 0, then set CURRENT to the empty location which ends
635 the previous symbol: RHS[0] (always defined). */
636
637 #define YYRHSLOC(Rhs, K) ((Rhs)[K])
638 #ifndef YYLLOC_DEFAULT
639 # define YYLLOC_DEFAULT(Current, Rhs, N) \
640 do \
641 if (YYID (N)) \
642 { \
643 (Current).first_line = YYRHSLOC (Rhs, 1).first_line; \
644 (Current).first_column = YYRHSLOC (Rhs, 1).first_column; \
645 (Current).last_line = YYRHSLOC (Rhs, N).last_line; \
646 (Current).last_column = YYRHSLOC (Rhs, N).last_column; \
647 } \
648 else \
649 { \
650 (Current).first_line = (Current).last_line = \
651 YYRHSLOC (Rhs, 0).last_line; \
652 (Current).first_column = (Current).last_column = \
653 YYRHSLOC (Rhs, 0).last_column; \
654 } \
655 while (YYID (0))
656 #endif
657
658
659 /* YY_LOCATION_PRINT -- Print the location on the stream.
660 This macro was not mandated originally: define only if we know
661 we won't break user code: when these are the locations we know. */
662
663 #ifndef YY_LOCATION_PRINT
664 # if YYLTYPE_IS_TRIVIAL
665 # define YY_LOCATION_PRINT(File, Loc) \
666 fprintf (File, "%d.%d-%d.%d", \
667 (Loc).first_line, (Loc).first_column, \
668 (Loc).last_line, (Loc).last_column)
669 # else
670 # define YY_LOCATION_PRINT(File, Loc) ((void) 0)
671 # endif
672 #endif
673
674
675 /* YYLEX -- calling `yylex' with the right arguments. */
676
677 #ifdef YYLEX_PARAM
678 # define YYLEX yylex (]b4_pure_if([&yylval[]b4_locations_if([, &yylloc]), ])[YYLEX_PARAM)
679 #else
680 # define YYLEX ]b4_c_function_call([yylex], [int], b4_lex_param)[
681 #endif
682
683 /* Enable debugging if requested. */
684 #if YYDEBUG
685
686 # ifndef YYFPRINTF
687 # include <stdio.h> /* INFRINGES ON USER NAME SPACE */
688 # define YYFPRINTF fprintf
689 # endif
690
691 # define YYDPRINTF(Args) \
692 do { \
693 if (yydebug) \
694 YYFPRINTF Args; \
695 } while (YYID (0))
696
697 # define YY_SYMBOL_PRINT(Title, Type, Value, Location) \
698 do { \
699 if (yydebug) \
700 { \
701 YYFPRINTF (stderr, "%s ", Title); \
702 yy_symbol_print (stderr, \
703 Type, Value]b4_locations_if([, Location])[]b4_user_args[); \
704 YYFPRINTF (stderr, "\n"); \
705 } \
706 } while (YYID (0))
707
708 ]b4_yy_symbol_print_generate([b4_c_function_def])[
709
710 /*------------------------------------------------------------------.
711 | yy_stack_print -- Print the state stack from its BOTTOM up to its |
712 | TOP (included). |
713 `------------------------------------------------------------------*/
714
715 ]b4_c_function_def([yy_stack_print], [static void],
716 [[yytype_int16 *yybottom], [yybottom]],
717 [[yytype_int16 *yytop], [yytop]])[
718 {
719 YYFPRINTF (stderr, "Stack now");
720 for (; yybottom <= yytop; yybottom++)
721 {
722 int yybot = *yybottom;
723 YYFPRINTF (stderr, " %d", yybot);
724 }
725 YYFPRINTF (stderr, "\n");
726 }
727
728 # define YY_STACK_PRINT(Bottom, Top) \
729 do { \
730 if (yydebug) \
731 yy_stack_print ((Bottom), (Top)); \
732 } while (YYID (0))
733
734
735 /*------------------------------------------------.
736 | Report that the YYRULE is going to be reduced. |
737 `------------------------------------------------*/
738
739 ]b4_c_function_def([yy_reduce_print], [static void],
740 [[YYSTYPE *yyvsp], [yyvsp]],
741 b4_locations_if([[[YYLTYPE *yylsp], [yylsp]],
742 ])[[int yyrule], [yyrule]]m4_ifset([b4_parse_param], [,
743 b4_parse_param]))[
744 {
745 int yynrhs = yyr2[yyrule];
746 int yyi;
747 unsigned long int yylno = yyrline[yyrule];
748 YYFPRINTF (stderr, "Reducing stack by rule %d (line %lu):\n",
749 yyrule - 1, yylno);
750 /* The symbols being reduced. */
751 for (yyi = 0; yyi < yynrhs; yyi++)
752 {
753 fprintf (stderr, " $%d = ", yyi + 1);
754 yy_symbol_print (stderr, yyrhs[yyprhs[yyrule] + yyi],
755 &]b4_rhs_value(yynrhs, yyi + 1)[
756 ]b4_locations_if([, &]b4_rhs_location(yynrhs, yyi + 1))[]dnl
757 b4_user_args[);
758 fprintf (stderr, "\n");
759 }
760 }
761
762 # define YY_REDUCE_PRINT(Rule) \
763 do { \
764 if (yydebug) \
765 yy_reduce_print (yyvsp, ]b4_locations_if([yylsp, ])[Rule]b4_user_args[); \
766 } while (YYID (0))
767
768 /* Nonzero means print parse trace. It is left uninitialized so that
769 multiple parsers can coexist. */
770 int yydebug;
771 #else /* !YYDEBUG */
772 # define YYDPRINTF(Args)
773 # define YY_SYMBOL_PRINT(Title, Type, Value, Location)
774 # define YY_STACK_PRINT(Bottom, Top)
775 # define YY_REDUCE_PRINT(Rule)
776 #endif /* !YYDEBUG */
777
778
779 /* YYINITDEPTH -- initial size of the parser's stacks. */
780 #ifndef YYINITDEPTH
781 # define YYINITDEPTH ]b4_stack_depth_init[
782 #endif
783
784 /* YYMAXDEPTH -- maximum size the stacks can grow to (effective only
785 if the built-in stack extension method is used).
786
787 Do not make this value too large; the results are undefined if
788 YYSTACK_ALLOC_MAXIMUM < YYSTACK_BYTES (YYMAXDEPTH)
789 evaluated with infinite-precision integer arithmetic. */
790
791 #ifndef YYMAXDEPTH
792 # define YYMAXDEPTH ]b4_stack_depth_max[
793 #endif
794
795 \f
796
797 #if YYERROR_VERBOSE
798
799 # ifndef yystrlen
800 # if defined __GLIBC__ && defined _STRING_H
801 # define yystrlen strlen
802 # else
803 /* Return the length of YYSTR. */
804 ]b4_c_function_def([yystrlen], [static YYSIZE_T],
805 [[const char *yystr], [yystr]])[
806 {
807 YYSIZE_T yylen;
808 for (yylen = 0; yystr[yylen]; yylen++)
809 continue;
810 return yylen;
811 }
812 # endif
813 # endif
814
815 # ifndef yystpcpy
816 # if defined __GLIBC__ && defined _STRING_H && defined _GNU_SOURCE
817 # define yystpcpy stpcpy
818 # else
819 /* Copy YYSRC to YYDEST, returning the address of the terminating '\0' in
820 YYDEST. */
821 ]b4_c_function_def([yystpcpy], [static char *],
822 [[char *yydest], [yydest]], [[const char *yysrc], [yysrc]])[
823 {
824 char *yyd = yydest;
825 const char *yys = yysrc;
826
827 while ((*yyd++ = *yys++) != '\0')
828 continue;
829
830 return yyd - 1;
831 }
832 # endif
833 # endif
834
835 # ifndef yytnamerr
836 /* Copy to YYRES the contents of YYSTR after stripping away unnecessary
837 quotes and backslashes, so that it's suitable for yyerror. The
838 heuristic is that double-quoting is unnecessary unless the string
839 contains an apostrophe, a comma, or backslash (other than
840 backslash-backslash). YYSTR is taken from yytname. If YYRES is
841 null, do not copy; instead, return the length of what the result
842 would have been. */
843 static YYSIZE_T
844 yytnamerr (char *yyres, const char *yystr)
845 {
846 if (*yystr == '"')
847 {
848 YYSIZE_T yyn = 0;
849 char const *yyp = yystr;
850
851 for (;;)
852 switch (*++yyp)
853 {
854 case '\'':
855 case ',':
856 goto do_not_strip_quotes;
857
858 case '\\':
859 if (*++yyp != '\\')
860 goto do_not_strip_quotes;
861 /* Fall through. */
862 default:
863 if (yyres)
864 yyres[yyn] = *yyp;
865 yyn++;
866 break;
867
868 case '"':
869 if (yyres)
870 yyres[yyn] = '\0';
871 return yyn;
872 }
873 do_not_strip_quotes: ;
874 }
875
876 if (! yyres)
877 return yystrlen (yystr);
878
879 return yystpcpy (yyres, yystr) - yyres;
880 }
881 # endif
882
883 /* Copy into YYRESULT an error message about the unexpected token
884 YYCHAR while in state YYSTATE. Return the number of bytes copied,
885 including the terminating null byte. If YYRESULT is null, do not
886 copy anything; just return the number of bytes that would be
887 copied. As a special case, return 0 if an ordinary "syntax error"
888 message will do. Return YYSIZE_MAXIMUM if overflow occurs during
889 size calculation. */
890 static YYSIZE_T
891 yysyntax_error (char *yyresult, int yystate, int yychar)
892 {
893 int yyn = yypact[yystate];
894
895 if (! (YYPACT_NINF < yyn && yyn <= YYLAST))
896 return 0;
897 else
898 {
899 int yytype = YYTRANSLATE (yychar);
900 YYSIZE_T yysize0 = yytnamerr (0, yytname[yytype]);
901 YYSIZE_T yysize = yysize0;
902 YYSIZE_T yysize1;
903 int yysize_overflow = 0;
904 enum { YYERROR_VERBOSE_ARGS_MAXIMUM = 5 };
905 char const *yyarg[YYERROR_VERBOSE_ARGS_MAXIMUM];
906 int yyx;
907
908 # if 0
909 /* This is so xgettext sees the translatable formats that are
910 constructed on the fly. */
911 YY_("syntax error, unexpected %s");
912 YY_("syntax error, unexpected %s, expecting %s");
913 YY_("syntax error, unexpected %s, expecting %s or %s");
914 YY_("syntax error, unexpected %s, expecting %s or %s or %s");
915 YY_("syntax error, unexpected %s, expecting %s or %s or %s or %s");
916 # endif
917 char *yyfmt;
918 char const *yyf;
919 static char const yyunexpected[] = "syntax error, unexpected %s";
920 static char const yyexpecting[] = ", expecting %s";
921 static char const yyor[] = " or %s";
922 char yyformat[sizeof yyunexpected
923 + sizeof yyexpecting - 1
924 + ((YYERROR_VERBOSE_ARGS_MAXIMUM - 2)
925 * (sizeof yyor - 1))];
926 char const *yyprefix = yyexpecting;
927
928 /* Start YYX at -YYN if negative to avoid negative indexes in
929 YYCHECK. */
930 int yyxbegin = yyn < 0 ? -yyn : 0;
931
932 /* Stay within bounds of both yycheck and yytname. */
933 int yychecklim = YYLAST - yyn + 1;
934 int yyxend = yychecklim < YYNTOKENS ? yychecklim : YYNTOKENS;
935 int yycount = 1;
936
937 yyarg[0] = yytname[yytype];
938 yyfmt = yystpcpy (yyformat, yyunexpected);
939
940 for (yyx = yyxbegin; yyx < yyxend; ++yyx)
941 if (yycheck[yyx + yyn] == yyx && yyx != YYTERROR)
942 {
943 if (yycount == YYERROR_VERBOSE_ARGS_MAXIMUM)
944 {
945 yycount = 1;
946 yysize = yysize0;
947 yyformat[sizeof yyunexpected - 1] = '\0';
948 break;
949 }
950 yyarg[yycount++] = yytname[yyx];
951 yysize1 = yysize + yytnamerr (0, yytname[yyx]);
952 yysize_overflow |= (yysize1 < yysize);
953 yysize = yysize1;
954 yyfmt = yystpcpy (yyfmt, yyprefix);
955 yyprefix = yyor;
956 }
957
958 yyf = YY_(yyformat);
959 yysize1 = yysize + yystrlen (yyf);
960 yysize_overflow |= (yysize1 < yysize);
961 yysize = yysize1;
962
963 if (yysize_overflow)
964 return YYSIZE_MAXIMUM;
965
966 if (yyresult)
967 {
968 /* Avoid sprintf, as that infringes on the user's name space.
969 Don't have undefined behavior even if the translation
970 produced a string with the wrong number of "%s"s. */
971 char *yyp = yyresult;
972 int yyi = 0;
973 while ((*yyp = *yyf) != '\0')
974 {
975 if (*yyp == '%' && yyf[1] == 's' && yyi < yycount)
976 {
977 yyp += yytnamerr (yyp, yyarg[yyi++]);
978 yyf += 2;
979 }
980 else
981 {
982 yyp++;
983 yyf++;
984 }
985 }
986 }
987 return yysize;
988 }
989 }
990 #endif /* YYERROR_VERBOSE */
991 \f
992
993 ]b4_yydestruct_generate([b4_c_function_def])[
994
995 ]b4_push_if([],
996 [[/* Prevent warnings from -Wmissing-prototypes. */
997 #ifdef YYPARSE_PARAM
998 ]b4_c_function_decl([yyparse], [int],
999 [[void *YYPARSE_PARAM], [YYPARSE_PARAM]])[
1000 #else /* ! YYPARSE_PARAM */
1001 ]b4_c_function_decl([yyparse], [int], b4_parse_param)[
1002 #endif /* ! YYPARSE_PARAM */]])
1003
1004 m4_divert_push([KILL])# ======================== M4 code.
1005 # b4_declare_scanner_communication_variables
1006 # ------------------------------------------
1007 # Declare the variables that are global, or local to YYPARSE if
1008 # pure-parser.
1009 m4_define([b4_declare_scanner_communication_variables],
1010 [[/* The lookahead symbol. */
1011 int yychar;
1012
1013 /* The semantic value of the lookahead symbol. */
1014 YYSTYPE yylval;
1015 ]b4_locations_if([[
1016 /* Location data for the lookahead symbol. */
1017 YYLTYPE yylloc;
1018 ]])b4_pure_if([], [[
1019 /* Number of syntax errors so far. */
1020 int yynerrs;
1021 ]])])
1022
1023 # b4_declare_parser_state_variables
1024 # ---------------------------------
1025 # Declare all the variables that are needed to maintain the parser state
1026 # between calls to yypush_parse.
1027 m4_define([b4_declare_parser_state_variables],
1028 [b4_pure_if([[ /* Number of syntax errors so far. */
1029 int yynerrs;
1030 ]])[
1031 int yystate;
1032 /* Number of tokens to shift before error messages enabled. */
1033 int yyerrstatus;
1034
1035 /* Three stacks and their tools:
1036 `yyss': related to states,
1037 `yyvs': related to semantic values,
1038 `yyls': related to locations.
1039
1040 Refer to the stacks thru separate pointers, to allow yyoverflow
1041 to reallocate them elsewhere. */
1042
1043 /* The state stack. */
1044 yytype_int16 yyssa[YYINITDEPTH];
1045 yytype_int16 *yyss;
1046 yytype_int16 *yyssp;
1047
1048 /* The semantic value stack. */
1049 YYSTYPE yyvsa[YYINITDEPTH];
1050 YYSTYPE *yyvs;
1051 YYSTYPE *yyvsp;
1052 ]b4_locations_if([[
1053 /* The location stack. */
1054 YYLTYPE yylsa[YYINITDEPTH];
1055 YYLTYPE *yyls;
1056 YYLTYPE *yylsp;
1057
1058 /* The locations where the error started and ended. */
1059 YYLTYPE yyerror_range[2];
1060 ]])[
1061 YYSIZE_T yystacksize;
1062 ]])
1063
1064 m4_divert_pop([KILL])dnl# ====================== End of M4 code.
1065
1066 b4_pure_if([], [b4_declare_scanner_communication_variables])
1067
1068 b4_push_if(
1069 [[struct yypstate
1070 {
1071 ]b4_declare_parser_state_variables[
1072 /* Used to determine if this is the first time this instance has
1073 been used. */
1074 int yynew;
1075 };
1076
1077 ]b4_pull_if([b4_c_function_def([[yyparse]], [[int]], b4_parse_param)[
1078 {
1079 return yypull_parse (0]m4_ifset([b4_parse_param],
1080 [[, ]b4_c_args(b4_parse_param)])[);
1081 }
1082
1083 ]b4_c_function_def([[yypull_parse]], [[int]],
1084 [[[yypstate *yyps]], [[yyps]]]m4_ifset([b4_parse_param], [,
1085 b4_parse_param]))[
1086 {
1087 int yystatus;
1088 yypstate *yyps_local;
1089 ]b4_pure_if([[ int yychar;
1090 YYSTYPE yylval;
1091 ]b4_locations_if([[ YYLTYPE yylloc;
1092 ]])])[
1093 if (yyps == 0)
1094 yyps_local = yypstate_new ();
1095 else
1096 yyps_local = yyps;
1097 do {
1098 yychar = YYLEX;
1099 yystatus =
1100 yypush_parse (yyps_local]b4_pure_if([[, yychar, &yylval]b4_locations_if([[, &yylloc]])])m4_ifset([b4_parse_param], [, b4_c_args(b4_parse_param)])[);
1101 } while (yystatus == YYPUSH_MORE);
1102 if (yyps == 0)
1103 yypstate_delete (yyps_local);
1104 return yystatus;
1105 }
1106 ]])[
1107 /* Initialize the parser data structure. */
1108 ]b4_c_function_def([[yypstate_new]], [[yypstate *]])[
1109 {
1110 yypstate *yyps = (yypstate *) malloc (sizeof *yyps);
1111 yyps->yynew = 1;
1112 return yyps;
1113 }
1114
1115 ]b4_c_function_def([[yypstate_delete]], [[void]],
1116 [[[yypstate *yyps]], [[yyps]]])[
1117 {
1118 free (yyps);
1119 }
1120
1121 ]b4_pure_if([[#define ]b4_prefix[nerrs yyps->]b4_prefix[nerrs
1122 ]])[#define yystate yyps->yystate
1123 #define yyerrstatus yyps->yyerrstatus
1124 #define yyssa yyps->yyssa
1125 #define yyss yyps->yyss
1126 #define yyssp yyps->yyssp
1127 #define yyvsa yyps->yyvsa
1128 #define yyvs yyps->yyvs
1129 #define yyvsp yyps->yyvsp
1130 ]b4_locations_if([[#define yylsa yyps->yylsa
1131 #define yyls yyps->yyls
1132 #define yylsp yyps->yylsp
1133 #define yyerror_range yyps->yyerror_range
1134 ]])[#define yystacksize yyps->yystacksize
1135 ]])[
1136
1137 /*-------------------------.
1138 | yyparse or yypush_parse. |
1139 `-------------------------*/
1140
1141 ]b4_push_if([
1142 b4_c_function_def([[yypush_parse]], [[int]],
1143 [[[yypstate *yyps]], [[yyps]]]b4_pure_if([,
1144 [[[int yypushed_char]], [[yypushed_char]]],
1145 [[[YYSTYPE const *yypushed_val]], [[yypushed_val]]]b4_locations_if([,
1146 [[[YYLTYPE const *yypushed_loc]], [[yypushed_loc]]]])])m4_ifset([b4_parse_param], [,
1147 b4_parse_param]))], [
1148 #ifdef YYPARSE_PARAM
1149 b4_c_function_def([yyparse], [int], [[void *YYPARSE_PARAM], [YYPARSE_PARAM]])
1150 #else /* ! YYPARSE_PARAM */
1151 b4_c_function_def([yyparse], [int], b4_parse_param)
1152 #endif])[
1153 {
1154 ]b4_pure_if([b4_declare_scanner_communication_variables])
1155 b4_push_if([b4_pure_if([], [[ int yypushed_char = yychar;
1156 YYSTYPE yypushed_val = yylval;
1157 ]b4_locations_if([[YYLTYPE yypushed_loc = yylloc;
1158 ]])])],
1159 [b4_declare_parser_state_variables])[
1160 int yyn;
1161 int yyresult;
1162 /* Look-ahead token as an internal (translated) token number. */
1163 int yytoken;
1164 /* The variables used to return semantic value and location from the
1165 action routines. */
1166 YYSTYPE yyval;
1167 ]b4_locations_if([[ YYLTYPE yyloc;
1168 ]])[
1169 #if YYERROR_VERBOSE
1170 /* Buffer for error messages, and its allocated size. */
1171 char yymsgbuf[128];
1172 char *yymsg = yymsgbuf;
1173 YYSIZE_T yymsg_alloc = sizeof yymsgbuf;
1174 #endif
1175
1176 #define YYPOPSTACK(N) (yyvsp -= (N), yyssp -= (N)]b4_locations_if([, yylsp -= (N)])[)
1177
1178 /* The number of symbols on the RHS of the reduced rule.
1179 Keep to zero when no symbol should be popped. */
1180 int yylen = 0;
1181 ]b4_push_if([[
1182 if (!yyps->yynew)
1183 {
1184 yyn = yypact[yystate];
1185 goto yyread_pushed_token;
1186 }
1187 ]])[
1188 yytoken = 0;
1189 yyss = yyssa;
1190 yyvs = yyvsa;
1191 ]b4_locations_if([[ yyls = yylsa;
1192 ]])[
1193 yystacksize = YYINITDEPTH;
1194
1195 YYDPRINTF ((stderr, "Starting parse\n"));
1196
1197 yystate = 0;
1198 yyerrstatus = 0;
1199 yynerrs = 0;
1200 yychar = YYEMPTY; /* Cause a token to be read. */
1201
1202 /* Initialize stack pointers.
1203 Waste one element of value and location stack
1204 so that they stay on the same level as the state stack.
1205 The wasted elements are never initialized. */
1206 yyssp = yyss;
1207 yyvsp = yyvs;
1208 ]b4_locations_if([[ yylsp = yyls;
1209
1210 #if YYLTYPE_IS_TRIVIAL
1211 /* Initialize the default location before parsing starts. */
1212 yylloc.first_line = yylloc.last_line = ]b4_location_initial_line[;
1213 yylloc.first_column = yylloc.last_column = ]b4_location_initial_column[;
1214 #endif
1215 ]])
1216 m4_ifdef([b4_initial_action], [
1217 m4_pushdef([b4_at_dollar], [m4_define([b4_at_dollar_used])yylloc])dnl
1218 m4_pushdef([b4_dollar_dollar], [m4_define([b4_dollar_dollar_used])yylval])dnl
1219 /* User initialization code. */
1220 b4_user_initial_action
1221 m4_popdef([b4_dollar_dollar])dnl
1222 m4_popdef([b4_at_dollar])])dnl
1223 m4_ifdef([b4_dollar_dollar_used],[[ yyvsp[0] = yylval;
1224 ]])dnl
1225 m4_ifdef([b4_at_dollar_used], [[ yylsp[0] = yylloc;
1226 ]])dnl
1227 [
1228 goto yysetstate;
1229
1230 /*------------------------------------------------------------.
1231 | yynewstate -- Push a new state, which is found in yystate. |
1232 `------------------------------------------------------------*/
1233 yynewstate:
1234 /* In all cases, when you get here, the value and location stacks
1235 have just been pushed. So pushing a state here evens the stacks. */
1236 yyssp++;
1237
1238 yysetstate:
1239 *yyssp = yystate;
1240
1241 if (yyss + yystacksize - 1 <= yyssp)
1242 {
1243 /* Get the current used size of the three stacks, in elements. */
1244 YYSIZE_T yysize = yyssp - yyss + 1;
1245
1246 #ifdef yyoverflow
1247 {
1248 /* Give user a chance to reallocate the stack. Use copies of
1249 these so that the &'s don't force the real ones into
1250 memory. */
1251 YYSTYPE *yyvs1 = yyvs;
1252 yytype_int16 *yyss1 = yyss;
1253 ]b4_locations_if([ YYLTYPE *yyls1 = yyls;])[
1254
1255 /* Each stack pointer address is followed by the size of the
1256 data in use in that stack, in bytes. This used to be a
1257 conditional around just the two extra args, but that might
1258 be undefined if yyoverflow is a macro. */
1259 yyoverflow (YY_("memory exhausted"),
1260 &yyss1, yysize * sizeof (*yyssp),
1261 &yyvs1, yysize * sizeof (*yyvsp),
1262 ]b4_locations_if([ &yyls1, yysize * sizeof (*yylsp),])[
1263 &yystacksize);
1264 ]b4_locations_if([ yyls = yyls1;])[
1265 yyss = yyss1;
1266 yyvs = yyvs1;
1267 }
1268 #else /* no yyoverflow */
1269 # ifndef YYSTACK_RELOCATE
1270 goto yyexhaustedlab;
1271 # else
1272 /* Extend the stack our own way. */
1273 if (YYMAXDEPTH <= yystacksize)
1274 goto yyexhaustedlab;
1275 yystacksize *= 2;
1276 if (YYMAXDEPTH < yystacksize)
1277 yystacksize = YYMAXDEPTH;
1278
1279 {
1280 yytype_int16 *yyss1 = yyss;
1281 union yyalloc *yyptr =
1282 (union yyalloc *) YYSTACK_ALLOC (YYSTACK_BYTES (yystacksize));
1283 if (! yyptr)
1284 goto yyexhaustedlab;
1285 YYSTACK_RELOCATE (yyss_alloc, yyss);
1286 YYSTACK_RELOCATE (yyvs_alloc, yyvs);
1287 ]b4_locations_if([ YYSTACK_RELOCATE (yyls_alloc, yyls);])[
1288 # undef YYSTACK_RELOCATE
1289 if (yyss1 != yyssa)
1290 YYSTACK_FREE (yyss1);
1291 }
1292 # endif
1293 #endif /* no yyoverflow */
1294
1295 yyssp = yyss + yysize - 1;
1296 yyvsp = yyvs + yysize - 1;
1297 ]b4_locations_if([ yylsp = yyls + yysize - 1;])[
1298
1299 YYDPRINTF ((stderr, "Stack size increased to %lu\n",
1300 (unsigned long int) yystacksize));
1301
1302 if (yyss + yystacksize - 1 <= yyssp)
1303 YYABORT;
1304 }
1305
1306 YYDPRINTF ((stderr, "Entering state %d\n", yystate));
1307
1308 if (yystate == YYFINAL)
1309 YYACCEPT;
1310
1311 goto yybackup;
1312
1313 /*-----------.
1314 | yybackup. |
1315 `-----------*/
1316 yybackup:
1317
1318 /* Do appropriate processing given the current state. Read a
1319 lookahead token if we need one and don't already have one. */
1320
1321 /* First try to decide what to do without reference to lookahead token. */
1322 yyn = yypact[yystate];
1323 if (yyn == YYPACT_NINF)
1324 goto yydefault;
1325
1326 /* Not known => get a lookahead token if don't already have one. */
1327
1328 /* YYCHAR is either YYEMPTY or YYEOF or a valid lookahead symbol. */
1329 if (yychar == YYEMPTY)
1330 {
1331 ]b4_push_if([[ if (!yyps->yynew)
1332 {
1333 ]b4_use_push_for_pull_if([],
1334 [[ YYDPRINTF ((stderr, "Return for a new token:\n"));
1335 ]])[ yyresult = YYPUSH_MORE;
1336 goto yypushreturn;
1337 }
1338 yyps->yynew = 0;
1339 ]b4_pure_if([], [[
1340 /* Restoring the pushed token is only necessary for the first
1341 yypush_parse invocation since subsequent invocations don't overwrite
1342 it before jumping to yyread_pushed_token. */
1343 yychar = yypushed_char;
1344 yylval = yypushed_val;
1345 ]b4_locations_if([[yylloc = yypushed_loc;
1346 ]])])[
1347 yyread_pushed_token:
1348 ]])[ YYDPRINTF ((stderr, "Reading a token: "));
1349 ]b4_push_if([b4_pure_if([[ yychar = yypushed_char;
1350 if (yypushed_val)
1351 yylval = *yypushed_val;
1352 ]b4_locations_if([[ if (yypushed_loc)
1353 yylloc = *yypushed_loc;
1354 ]])])],
1355 [[ yychar = YYLEX;
1356 ]])[ }
1357
1358 if (yychar <= YYEOF)
1359 {
1360 yychar = yytoken = YYEOF;
1361 YYDPRINTF ((stderr, "Now at end of input.\n"));
1362 }
1363 else
1364 {
1365 yytoken = YYTRANSLATE (yychar);
1366 YY_SYMBOL_PRINT ("Next token is", yytoken, &yylval, &yylloc);
1367 }
1368
1369 /* If the proper action on seeing token YYTOKEN is to reduce or to
1370 detect an error, take that action. */
1371 yyn += yytoken;
1372 if (yyn < 0 || YYLAST < yyn || yycheck[yyn] != yytoken)
1373 goto yydefault;
1374 yyn = yytable[yyn];
1375 if (yyn <= 0)
1376 {
1377 if (yyn == 0 || yyn == YYTABLE_NINF)
1378 goto yyerrlab;
1379 yyn = -yyn;
1380 goto yyreduce;
1381 }
1382
1383 /* Count tokens shifted since error; after three, turn off error
1384 status. */
1385 if (yyerrstatus)
1386 yyerrstatus--;
1387
1388 /* Shift the lookahead token. */
1389 YY_SYMBOL_PRINT ("Shifting", yytoken, &yylval, &yylloc);
1390
1391 /* Discard the shifted token. */
1392 yychar = YYEMPTY;
1393
1394 yystate = yyn;
1395 *++yyvsp = yylval;
1396 ]b4_locations_if([ *++yylsp = yylloc;])[
1397 goto yynewstate;
1398
1399
1400 /*-----------------------------------------------------------.
1401 | yydefault -- do the default action for the current state. |
1402 `-----------------------------------------------------------*/
1403 yydefault:
1404 yyn = yydefact[yystate];
1405 if (yyn == 0)
1406 goto yyerrlab;
1407 goto yyreduce;
1408
1409
1410 /*-----------------------------.
1411 | yyreduce -- Do a reduction. |
1412 `-----------------------------*/
1413 yyreduce:
1414 /* yyn is the number of a rule to reduce with. */
1415 yylen = yyr2[yyn];
1416
1417 /* If YYLEN is nonzero, implement the default value of the action:
1418 `$$ = $1'.
1419
1420 Otherwise, the following line sets YYVAL to garbage.
1421 This behavior is undocumented and Bison
1422 users should not rely upon it. Assigning to YYVAL
1423 unconditionally makes the parser a bit smaller, and it avoids a
1424 GCC warning that YYVAL may be used uninitialized. */
1425 yyval = yyvsp[1-yylen];
1426
1427 ]b4_locations_if(
1428 [[ /* Default location. */
1429 YYLLOC_DEFAULT (yyloc, (yylsp - yylen), yylen);]])[
1430 YY_REDUCE_PRINT (yyn);
1431 switch (yyn)
1432 {
1433 ]b4_user_actions[
1434 default: break;
1435 }
1436 YY_SYMBOL_PRINT ("-> $$ =", yyr1[yyn], &yyval, &yyloc);
1437
1438 YYPOPSTACK (yylen);
1439 yylen = 0;
1440 YY_STACK_PRINT (yyss, yyssp);
1441
1442 *++yyvsp = yyval;
1443 ]b4_locations_if([ *++yylsp = yyloc;])[
1444
1445 /* Now `shift' the result of the reduction. Determine what state
1446 that goes to, based on the state we popped back to and the rule
1447 number reduced by. */
1448
1449 yyn = yyr1[yyn];
1450
1451 yystate = yypgoto[yyn - YYNTOKENS] + *yyssp;
1452 if (0 <= yystate && yystate <= YYLAST && yycheck[yystate] == *yyssp)
1453 yystate = yytable[yystate];
1454 else
1455 yystate = yydefgoto[yyn - YYNTOKENS];
1456
1457 goto yynewstate;
1458
1459
1460 /*------------------------------------.
1461 | yyerrlab -- here on detecting error |
1462 `------------------------------------*/
1463 yyerrlab:
1464 /* If not already recovering from an error, report this error. */
1465 if (!yyerrstatus)
1466 {
1467 ++yynerrs;
1468 #if ! YYERROR_VERBOSE
1469 yyerror (]b4_yyerror_args[YY_("syntax error"));
1470 #else
1471 {
1472 YYSIZE_T yysize = yysyntax_error (0, yystate, yychar);
1473 if (yymsg_alloc < yysize && yymsg_alloc < YYSTACK_ALLOC_MAXIMUM)
1474 {
1475 YYSIZE_T yyalloc = 2 * yysize;
1476 if (! (yysize <= yyalloc && yyalloc <= YYSTACK_ALLOC_MAXIMUM))
1477 yyalloc = YYSTACK_ALLOC_MAXIMUM;
1478 if (yymsg != yymsgbuf)
1479 YYSTACK_FREE (yymsg);
1480 yymsg = (char *) YYSTACK_ALLOC (yyalloc);
1481 if (yymsg)
1482 yymsg_alloc = yyalloc;
1483 else
1484 {
1485 yymsg = yymsgbuf;
1486 yymsg_alloc = sizeof yymsgbuf;
1487 }
1488 }
1489
1490 if (0 < yysize && yysize <= yymsg_alloc)
1491 {
1492 (void) yysyntax_error (yymsg, yystate, yychar);
1493 yyerror (]b4_yyerror_args[yymsg);
1494 }
1495 else
1496 {
1497 yyerror (]b4_yyerror_args[YY_("syntax error"));
1498 if (yysize != 0)
1499 goto yyexhaustedlab;
1500 }
1501 }
1502 #endif
1503 }
1504
1505 ]b4_locations_if([[ yyerror_range[0] = yylloc;]])[
1506
1507 if (yyerrstatus == 3)
1508 {
1509 /* If just tried and failed to reuse lookahead token after an
1510 error, discard it. */
1511
1512 if (yychar <= YYEOF)
1513 {
1514 /* Return failure if at end of input. */
1515 if (yychar == YYEOF)
1516 YYABORT;
1517 }
1518 else
1519 {
1520 yydestruct ("Error: discarding",
1521 yytoken, &yylval]b4_locations_if([, &yylloc])[]b4_user_args[);
1522 yychar = YYEMPTY;
1523 }
1524 }
1525
1526 /* Else will try to reuse lookahead token after shifting the error
1527 token. */
1528 goto yyerrlab1;
1529
1530
1531 /*---------------------------------------------------.
1532 | yyerrorlab -- error raised explicitly by YYERROR. |
1533 `---------------------------------------------------*/
1534 yyerrorlab:
1535
1536 /* Pacify compilers like GCC when the user code never invokes
1537 YYERROR and the label yyerrorlab therefore never appears in user
1538 code. */
1539 if (/*CONSTCOND*/ 0)
1540 goto yyerrorlab;
1541
1542 ]b4_locations_if([[ yyerror_range[0] = yylsp[1-yylen];
1543 ]])[ /* Do not reclaim the symbols of the rule which action triggered
1544 this YYERROR. */
1545 YYPOPSTACK (yylen);
1546 yylen = 0;
1547 YY_STACK_PRINT (yyss, yyssp);
1548 yystate = *yyssp;
1549 goto yyerrlab1;
1550
1551
1552 /*-------------------------------------------------------------.
1553 | yyerrlab1 -- common code for both syntax error and YYERROR. |
1554 `-------------------------------------------------------------*/
1555 yyerrlab1:
1556 yyerrstatus = 3; /* Each real token shifted decrements this. */
1557
1558 for (;;)
1559 {
1560 yyn = yypact[yystate];
1561 if (yyn != YYPACT_NINF)
1562 {
1563 yyn += YYTERROR;
1564 if (0 <= yyn && yyn <= YYLAST && yycheck[yyn] == YYTERROR)
1565 {
1566 yyn = yytable[yyn];
1567 if (0 < yyn)
1568 break;
1569 }
1570 }
1571
1572 /* Pop the current state because it cannot handle the error token. */
1573 if (yyssp == yyss)
1574 YYABORT;
1575
1576 ]b4_locations_if([[ yyerror_range[0] = *yylsp;]])[
1577 yydestruct ("Error: popping",
1578 yystos[yystate], yyvsp]b4_locations_if([, yylsp])[]b4_user_args[);
1579 YYPOPSTACK (1);
1580 yystate = *yyssp;
1581 YY_STACK_PRINT (yyss, yyssp);
1582 }
1583
1584 *++yyvsp = yylval;
1585 ]b4_locations_if([[
1586 yyerror_range[1] = yylloc;
1587 /* Using YYLLOC is tempting, but would change the location of
1588 the lookahead. YYLOC is available though. */
1589 YYLLOC_DEFAULT (yyloc, (yyerror_range - 1), 2);
1590 *++yylsp = yyloc;]])[
1591
1592 /* Shift the error token. */
1593 YY_SYMBOL_PRINT ("Shifting", yystos[yyn], yyvsp, yylsp);
1594
1595 yystate = yyn;
1596 goto yynewstate;
1597
1598
1599 /*-------------------------------------.
1600 | yyacceptlab -- YYACCEPT comes here. |
1601 `-------------------------------------*/
1602 yyacceptlab:
1603 yyresult = 0;
1604 goto yyreturn;
1605
1606 /*-----------------------------------.
1607 | yyabortlab -- YYABORT comes here. |
1608 `-----------------------------------*/
1609 yyabortlab:
1610 yyresult = 1;
1611 goto yyreturn;
1612
1613 #ifndef yyoverflow
1614 /*-------------------------------------------------.
1615 | yyexhaustedlab -- memory exhaustion comes here. |
1616 `-------------------------------------------------*/
1617 yyexhaustedlab:
1618 yyerror (]b4_yyerror_args[YY_("memory exhausted"));
1619 yyresult = 2;
1620 /* Fall through. */
1621 #endif
1622
1623 yyreturn:
1624 if (yychar != YYEMPTY)
1625 yydestruct ("Cleanup: discarding lookahead",
1626 yytoken, &yylval]b4_locations_if([, &yylloc])[]b4_user_args[);
1627 /* Do not reclaim the symbols of the rule which action triggered
1628 this YYABORT or YYACCEPT. */
1629 YYPOPSTACK (yylen);
1630 YY_STACK_PRINT (yyss, yyssp);
1631 while (yyssp != yyss)
1632 {
1633 yydestruct ("Cleanup: popping",
1634 yystos[*yyssp], yyvsp]b4_locations_if([, yylsp])[]b4_user_args[);
1635 YYPOPSTACK (1);
1636 }
1637 #ifndef yyoverflow
1638 if (yyss != yyssa)
1639 YYSTACK_FREE (yyss);
1640 #endif
1641 ]b4_push_if([[ yyps->yynew = 1;
1642
1643 yypushreturn:
1644 ]])[#if YYERROR_VERBOSE
1645 if (yymsg != yymsgbuf)
1646 YYSTACK_FREE (yymsg);
1647 #endif
1648 /* Make sure YYID is used. */
1649 return YYID (yyresult);
1650 }
1651
1652
1653 ]b4_epilogue
1654 b4_defines_if(
1655 [@output(b4_spec_defines_file@)
1656 b4_copyright([Skeleton interface for Bison's Yacc-like parsers in C],dnl '
1657 [1984, 1989, 1990, 2000, 2001, 2002, 2003, 2004, 2005, 2006])
1658
1659 b4_get_percent_code([[requires]])[]dnl
1660
1661 b4_token_enums_defines(b4_tokens)
1662
1663 [#if ! defined YYSTYPE && ! defined YYSTYPE_IS_DECLARED
1664 ]m4_ifdef([b4_stype],
1665 [[typedef union ]b4_union_name[
1666 {
1667 ]b4_user_stype[
1668 } YYSTYPE;
1669 # define YYSTYPE_IS_TRIVIAL 1]],
1670 [m4_if(b4_tag_seen_flag, 0,
1671 [[typedef int YYSTYPE;
1672 # define YYSTYPE_IS_TRIVIAL 1]])])[
1673 # define yystype YYSTYPE /* obsolescent; will be withdrawn */
1674 # define YYSTYPE_IS_DECLARED 1
1675 #endif
1676
1677 ]b4_pure_if([], [[extern YYSTYPE ]b4_prefix[lval;]])
1678
1679 b4_locations_if(
1680 [#if ! defined YYLTYPE && ! defined YYLTYPE_IS_DECLARED
1681 typedef struct YYLTYPE
1682 {
1683 int first_line;
1684 int first_column;
1685 int last_line;
1686 int last_column;
1687 } YYLTYPE;
1688 # define yyltype YYLTYPE /* obsolescent; will be withdrawn */
1689 # define YYLTYPE_IS_DECLARED 1
1690 # define YYLTYPE_IS_TRIVIAL 1
1691 #endif
1692
1693 ]b4_pure_if([], [[extern YYLTYPE ]b4_prefix[lloc;]])
1694 )dnl b4_locations_if
1695
1696 b4_push_if([[#ifndef YYPUSH_DECLS
1697 # define YYPUSH_DECLS
1698 struct ]b4_prefix[pstate;
1699 typedef struct ]b4_prefix[pstate ]b4_prefix[pstate;
1700 enum { YYPUSH_MORE = 4 };
1701 ]b4_pull_if([b4_c_function_decl([b4_prefix[parse]], [[int]], b4_parse_param)
1702 ])b4_c_function_decl([b4_prefix[push_parse]], [[int]],
1703 [[b4_prefix[pstate *yyps]], [[yyps]]]b4_pure_if([,
1704 [[[int yypushed_char]], [[yypushed_char]]],
1705 [[[YYSTYPE const *yypushed_val]], [[yypushed_val]]]b4_locations_if([,
1706 [[[YYLTYPE const *yypushed_loc]], [[yypushed_loc]]]])])m4_ifset([b4_parse_param], [,
1707 b4_parse_param]))
1708 b4_pull_if([b4_c_function_decl([b4_prefix[pull_parse]], [[int]],
1709 [[b4_prefix[pstate *yyps]], [[yyps]]]m4_ifset([b4_parse_param], [,
1710 b4_parse_param]))])
1711 b4_c_function_decl([b4_prefix[pstate_new]], [b4_prefix[pstate *]],
1712 [[[void]], []])
1713 b4_c_function_decl([b4_prefix[pstate_delete]], [[void]],
1714 [[b4_prefix[pstate *yyps]], [[yyps]]])[
1715 #endif
1716 ]])
1717 b4_get_percent_code([[provides]])[]dnl
1718 ])dnl b4_defines_if
1719 m4_divert_pop(0)
bison