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Add maintainer-push-check to run maintainer-check using push parsing in
[bison.git] / data / push.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 # 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(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 m4_if(b4_prefix, [yy], [],
164 [[/* Substitute the variable and function names. */
165 ]b4_pull_if([[#define yyparse ]b4_prefix[parse
166 ]])b4_push_if([[#define yypush_parse ]b4_prefix[push_parse
167 ]b4_pull_if([[#define yypull_parse ]b4_prefix[pull_parse
168 ]])[#define yypstate_new ]b4_prefix[pstate_new
169 #define yypstate_delete ]b4_prefix[pstate_delete
170 #define yypstate ]b4_prefix[pstate
171 ]])[#define yylex ]b4_prefix[lex
172 #define yyerror ]b4_prefix[error
173 #define yylval ]b4_prefix[lval
174 #define yychar ]b4_prefix[char
175 #define yydebug ]b4_prefix[debug
176 #define yynerrs ]b4_prefix[nerrs
177 ]b4_locations_if([[#define yylloc ]b4_prefix[lloc]])])[
178
179 /* Copy the first part of user declarations. */
180 ]b4_user_pre_prologue[
181
182 /* Enabling traces. */
183 #ifndef YYDEBUG
184 # define YYDEBUG ]b4_debug_flag[
185 #endif
186
187 /* Enabling verbose error messages. */
188 #ifdef YYERROR_VERBOSE
189 # undef YYERROR_VERBOSE
190 # define YYERROR_VERBOSE 1
191 #else
192 # define YYERROR_VERBOSE ]b4_error_verbose_flag[
193 #endif
194
195 /* Enabling the token table. */
196 #ifndef YYTOKEN_TABLE
197 # define YYTOKEN_TABLE ]b4_token_table[
198 #endif
199
200 ]m4_ifdef([b4_requires],
201 [[/* Copy the %requires blocks. */
202 ]b4_user_requires])[]dnl
203
204 b4_token_enums_defines(b4_tokens)[
205
206 #if ! defined YYSTYPE && ! defined YYSTYPE_IS_DECLARED
207 ]m4_ifdef([b4_stype],
208 [[typedef union ]b4_union_name[
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 m4_ifdef([b4_provides],
254 [[/* Copy the %provides blocks. */
255 ]b4_user_provides])[]dnl
256
257 [/* Copy the second part of user declarations. */
258 ]b4_user_post_prologue[
259
260 #ifdef short
261 # undef short
262 #endif
263
264 #ifdef YYTYPE_UINT8
265 typedef YYTYPE_UINT8 yytype_uint8;
266 #else
267 typedef unsigned char yytype_uint8;
268 #endif
269
270 #ifdef YYTYPE_INT8
271 typedef YYTYPE_INT8 yytype_int8;
272 #elif ]b4_c_modern[
273 typedef signed char yytype_int8;
274 #else
275 typedef short int yytype_int8;
276 #endif
277
278 #ifdef YYTYPE_UINT16
279 typedef YYTYPE_UINT16 yytype_uint16;
280 #else
281 typedef unsigned short int yytype_uint16;
282 #endif
283
284 #ifdef YYTYPE_INT16
285 typedef YYTYPE_INT16 yytype_int16;
286 #else
287 typedef short int yytype_int16;
288 #endif
289
290 #ifndef YYSIZE_T
291 # ifdef __SIZE_TYPE__
292 # define YYSIZE_T __SIZE_TYPE__
293 # elif defined size_t
294 # define YYSIZE_T size_t
295 # elif ! defined YYSIZE_T && ]b4_c_modern[
296 # include <stddef.h> /* INFRINGES ON USER NAME SPACE */
297 # define YYSIZE_T size_t
298 # else
299 # define YYSIZE_T unsigned int
300 # endif
301 #endif
302
303 #define YYSIZE_MAXIMUM ((YYSIZE_T) -1)
304
305 #ifndef YY_
306 # if YYENABLE_NLS
307 # if ENABLE_NLS
308 # include <libintl.h> /* INFRINGES ON USER NAME SPACE */
309 # define YY_(msgid) dgettext ("bison-runtime", msgid)
310 # endif
311 # endif
312 # ifndef YY_
313 # define YY_(msgid) msgid
314 # endif
315 #endif
316
317 /* Suppress unused-variable warnings by "using" E. */
318 #if ! defined lint || defined __GNUC__
319 # define YYUSE(e) ((void) (e))
320 #else
321 # define YYUSE(e) /* empty */
322 #endif
323
324 /* Identity function, used to suppress warnings about constant conditions. */
325 #ifndef lint
326 # define YYID(n) (n)
327 #else
328 ]b4_c_function_def([YYID], [static int], [[int yyi], [yyi]])[
329 {
330 return yyi;
331 }
332 #endif
333
334 #if ! defined yyoverflow || YYERROR_VERBOSE
335
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 # ifdef YYSTACK_ALLOC
362 /* Pacify GCC's `empty if-body' warning. */
363 # define YYSTACK_FREE(Ptr) do { /* empty */; } while (YYID (0))
364 # ifndef YYSTACK_ALLOC_MAXIMUM
365 /* The OS might guarantee only one guard page at the bottom of the stack,
366 and a page size can be as small as 4096 bytes. So we cannot safely
367 invoke alloca (N) if N exceeds 4096. Use a slightly smaller number
368 to allow for a few compiler-allocated temporary stack slots. */
369 # define YYSTACK_ALLOC_MAXIMUM 4032 /* reasonable circa 2006 */
370 # endif
371 # else
372 # define YYSTACK_ALLOC YYMALLOC
373 # define YYSTACK_FREE YYFREE
374 # ifndef YYSTACK_ALLOC_MAXIMUM
375 # define YYSTACK_ALLOC_MAXIMUM YYSIZE_MAXIMUM
376 # endif
377 # if (defined __cplusplus && ! defined _STDLIB_H \
378 && ! ((defined YYMALLOC || defined malloc) \
379 && (defined YYFREE || defined free)))
380 # include <stdlib.h> /* INFRINGES ON USER NAME SPACE */
381 # ifndef _STDLIB_H
382 # define _STDLIB_H 1
383 # endif
384 # endif
385 # ifndef YYMALLOC
386 # define YYMALLOC malloc
387 # if ! defined malloc && ! defined _STDLIB_H && ]b4_c_modern[
388 void *malloc (YYSIZE_T); /* INFRINGES ON USER NAME SPACE */
389 # endif
390 # endif
391 # ifndef YYFREE
392 # define YYFREE free
393 # if ! defined free && ! defined _STDLIB_H && ]b4_c_modern[
394 void free (void *); /* INFRINGES ON USER NAME SPACE */
395 # endif
396 # endif
397 # endif
398 #endif /* ! defined yyoverflow || YYERROR_VERBOSE */
399
400
401 #if (! defined yyoverflow \
402 && (! defined __cplusplus \
403 || (]b4_locations_if([[defined YYLTYPE_IS_TRIVIAL && YYLTYPE_IS_TRIVIAL \
404 && ]])[defined YYSTYPE_IS_TRIVIAL && YYSTYPE_IS_TRIVIAL)))
405
406 /* A type that is properly aligned for any stack member. */
407 union yyalloc
408 {
409 yytype_int16 yyss_alloc;
410 YYSTYPE yyvs_alloc;
411 ]b4_locations_if([ YYLTYPE yyls_alloc;
412 ])dnl
413 [};
414
415 /* The size of the maximum gap between one aligned stack and the next. */
416 # define YYSTACK_GAP_MAXIMUM (sizeof (union yyalloc) - 1)
417
418 /* The size of an array large to enough to hold all stacks, each with
419 N elements. */
420 ]b4_locations_if(
421 [# define YYSTACK_BYTES(N) \
422 ((N) * (sizeof (yytype_int16) + sizeof (YYSTYPE) + sizeof (YYLTYPE)) \
423 + 2 * YYSTACK_GAP_MAXIMUM)],
424 [# define YYSTACK_BYTES(N) \
425 ((N) * (sizeof (yytype_int16) + sizeof (YYSTYPE)) \
426 + YYSTACK_GAP_MAXIMUM)])[
427
428 /* Copy COUNT objects from FROM to TO. The source and destination do
429 not overlap. */
430 # ifndef YYCOPY
431 # if defined __GNUC__ && 1 < __GNUC__
432 # define YYCOPY(To, From, Count) \
433 __builtin_memcpy (To, From, (Count) * sizeof (*(From)))
434 # else
435 # define YYCOPY(To, From, Count) \
436 do \
437 { \
438 YYSIZE_T yyi; \
439 for (yyi = 0; yyi < (Count); yyi++) \
440 (To)[yyi] = (From)[yyi]; \
441 } \
442 while (YYID (0))
443 # endif
444 # endif
445
446 /* Relocate STACK from its old location to the new one. The
447 local variables YYSIZE and YYSTACKSIZE give the old and new number of
448 elements in the stack, and YYPTR gives the new location of the
449 stack. Advance YYPTR to a properly aligned location for the next
450 stack. */
451 # define YYSTACK_RELOCATE(Stack_alloc, Stack) \
452 do \
453 { \
454 YYSIZE_T yynewbytes; \
455 YYCOPY (&yyptr->Stack_alloc, Stack, yysize); \
456 Stack = &yyptr->Stack_alloc; \
457 yynewbytes = yystacksize * sizeof (*Stack) + YYSTACK_GAP_MAXIMUM; \
458 yyptr += yynewbytes / sizeof (*yyptr); \
459 } \
460 while (YYID (0))
461
462 #endif
463
464 /* YYFINAL -- State number of the termination state. */
465 #define YYFINAL ]b4_final_state_number[
466 /* YYLAST -- Last index in YYTABLE. */
467 #define YYLAST ]b4_last[
468
469 /* YYNTOKENS -- Number of terminals. */
470 #define YYNTOKENS ]b4_tokens_number[
471 /* YYNNTS -- Number of nonterminals. */
472 #define YYNNTS ]b4_nterms_number[
473 /* YYNRULES -- Number of rules. */
474 #define YYNRULES ]b4_rules_number[
475 /* YYNRULES -- Number of states. */
476 #define YYNSTATES ]b4_states_number[
477
478 /* YYTRANSLATE(YYLEX) -- Bison symbol number corresponding to YYLEX. */
479 #define YYUNDEFTOK ]b4_undef_token_number[
480 #define YYMAXUTOK ]b4_user_token_number_max[
481
482 #define YYTRANSLATE(YYX) \
483 ((unsigned int) (YYX) <= YYMAXUTOK ? yytranslate[YYX] : YYUNDEFTOK)
484
485 /* YYTRANSLATE[YYLEX] -- Bison symbol number corresponding to YYLEX. */
486 static const ]b4_int_type_for([b4_translate])[ yytranslate[] =
487 {
488 ]b4_translate[
489 };
490
491 #if YYDEBUG
492 /* YYPRHS[YYN] -- Index of the first RHS symbol of rule number YYN in
493 YYRHS. */
494 static const ]b4_int_type_for([b4_prhs])[ yyprhs[] =
495 {
496 ]b4_prhs[
497 };
498
499 /* YYRHS -- A `-1'-separated list of the rules' RHS. */
500 static const ]b4_int_type_for([b4_rhs])[ yyrhs[] =
501 {
502 ]b4_rhs[
503 };
504
505 /* YYRLINE[YYN] -- source line where rule number YYN was defined. */
506 static const ]b4_int_type_for([b4_rline])[ yyrline[] =
507 {
508 ]b4_rline[
509 };
510 #endif
511
512 #if YYDEBUG || YYERROR_VERBOSE || YYTOKEN_TABLE
513 /* YYTNAME[SYMBOL-NUM] -- String name of the symbol SYMBOL-NUM.
514 First, the terminals, then, starting at YYNTOKENS, nonterminals. */
515 static const char *const yytname[] =
516 {
517 ]b4_tname[
518 };
519 #endif
520
521 # ifdef YYPRINT
522 /* YYTOKNUM[YYLEX-NUM] -- Internal token number corresponding to
523 token YYLEX-NUM. */
524 static const ]b4_int_type_for([b4_toknum])[ yytoknum[] =
525 {
526 ]b4_toknum[
527 };
528 # endif
529
530 /* YYR1[YYN] -- Symbol number of symbol that rule YYN derives. */
531 static const ]b4_int_type_for([b4_r1])[ yyr1[] =
532 {
533 ]b4_r1[
534 };
535
536 /* YYR2[YYN] -- Number of symbols composing right hand side of rule YYN. */
537 static const ]b4_int_type_for([b4_r2])[ yyr2[] =
538 {
539 ]b4_r2[
540 };
541
542 /* YYDEFACT[STATE-NAME] -- Default rule to reduce with in state
543 STATE-NUM when YYTABLE doesn't specify something else to do. Zero
544 means the default is an error. */
545 static const ]b4_int_type_for([b4_defact])[ yydefact[] =
546 {
547 ]b4_defact[
548 };
549
550 /* YYDEFGOTO[NTERM-NUM]. */
551 static const ]b4_int_type_for([b4_defgoto])[ yydefgoto[] =
552 {
553 ]b4_defgoto[
554 };
555
556 /* YYPACT[STATE-NUM] -- Index in YYTABLE of the portion describing
557 STATE-NUM. */
558 #define YYPACT_NINF ]b4_pact_ninf[
559 static const ]b4_int_type_for([b4_pact])[ yypact[] =
560 {
561 ]b4_pact[
562 };
563
564 /* YYPGOTO[NTERM-NUM]. */
565 static const ]b4_int_type_for([b4_pgoto])[ yypgoto[] =
566 {
567 ]b4_pgoto[
568 };
569
570 /* YYTABLE[YYPACT[STATE-NUM]]. What to do in state STATE-NUM. If
571 positive, shift that token. If negative, reduce the rule which
572 number is the opposite. If zero, do what YYDEFACT says.
573 If YYTABLE_NINF, syntax error. */
574 #define YYTABLE_NINF ]b4_table_ninf[
575 static const ]b4_int_type_for([b4_table])[ yytable[] =
576 {
577 ]b4_table[
578 };
579
580 static const ]b4_int_type_for([b4_check])[ yycheck[] =
581 {
582 ]b4_check[
583 };
584
585 /* YYSTOS[STATE-NUM] -- The (internal number of the) accessing
586 symbol of state STATE-NUM. */
587 static const ]b4_int_type_for([b4_stos])[ yystos[] =
588 {
589 ]b4_stos[
590 };
591
592 #define yyerrok (yyerrstatus = 0)
593 #define yyclearin (yychar = YYEMPTY)
594 #define YYEMPTY (-2)
595 #define YYEOF 0
596
597 #define YYACCEPT goto yyacceptlab
598 #define YYABORT goto yyabortlab
599 #define YYERROR goto yyerrorlab
600
601
602 /* Like YYERROR except do call yyerror. This remains here temporarily
603 to ease the transition to the new meaning of YYERROR, for GCC.
604 Once GCC version 2 has supplanted version 1, this can go. */
605
606 #define YYFAIL goto yyerrlab
607
608 #define YYRECOVERING() (!!yyerrstatus)
609
610 #define YYBACKUP(Token, Value) \
611 do \
612 if (yychar == YYEMPTY && yylen == 1) \
613 { \
614 yychar = (Token); \
615 yylval = (Value); \
616 yytoken = YYTRANSLATE (yychar); \
617 YYPOPSTACK (1); \
618 goto yybackup; \
619 } \
620 else \
621 { \
622 yyerror (]b4_yyerror_args[YY_("syntax error: cannot back up")); \
623 YYERROR; \
624 } \
625 while (YYID (0))
626
627
628 #define YYTERROR 1
629 #define YYERRCODE 256
630
631
632 /* YYLLOC_DEFAULT -- Set CURRENT to span from RHS[1] to RHS[N].
633 If N is 0, then set CURRENT to the empty location which ends
634 the previous symbol: RHS[0] (always defined). */
635
636 #define YYRHSLOC(Rhs, K) ((Rhs)[K])
637 #ifndef YYLLOC_DEFAULT
638 # define YYLLOC_DEFAULT(Current, Rhs, N) \
639 do \
640 if (YYID (N)) \
641 { \
642 (Current).first_line = YYRHSLOC (Rhs, 1).first_line; \
643 (Current).first_column = YYRHSLOC (Rhs, 1).first_column; \
644 (Current).last_line = YYRHSLOC (Rhs, N).last_line; \
645 (Current).last_column = YYRHSLOC (Rhs, N).last_column; \
646 } \
647 else \
648 { \
649 (Current).first_line = (Current).last_line = \
650 YYRHSLOC (Rhs, 0).last_line; \
651 (Current).first_column = (Current).last_column = \
652 YYRHSLOC (Rhs, 0).last_column; \
653 } \
654 while (YYID (0))
655 #endif
656
657
658 /* YY_LOCATION_PRINT -- Print the location on the stream.
659 This macro was not mandated originally: define only if we know
660 we won't break user code: when these are the locations we know. */
661
662 #ifndef YY_LOCATION_PRINT
663 # if YYLTYPE_IS_TRIVIAL
664 # define YY_LOCATION_PRINT(File, Loc) \
665 fprintf (File, "%d.%d-%d.%d", \
666 (Loc).first_line, (Loc).first_column, \
667 (Loc).last_line, (Loc).last_column)
668 # else
669 # define YY_LOCATION_PRINT(File, Loc) ((void) 0)
670 # endif
671 #endif
672
673
674 /* YYLEX -- calling `yylex' with the right arguments. */
675
676 #ifdef YYLEX_PARAM
677 # define YYLEX yylex (]b4_pure_if([&yylval[]b4_locations_if([, &yylloc]), ])[YYLEX_PARAM)
678 #else
679 # define YYLEX ]b4_c_function_call([yylex], [int], b4_lex_param)[
680 #endif
681
682 /* Enable debugging if requested. */
683 #if YYDEBUG
684
685 # ifndef YYFPRINTF
686 # include <stdio.h> /* INFRINGES ON USER NAME SPACE */
687 # define YYFPRINTF fprintf
688 # endif
689
690 # define YYDPRINTF(Args) \
691 do { \
692 if (yydebug) \
693 YYFPRINTF Args; \
694 } while (YYID (0))
695
696 # define YY_SYMBOL_PRINT(Title, Type, Value, Location) \
697 do { \
698 if (yydebug) \
699 { \
700 YYFPRINTF (stderr, "%s ", Title); \
701 yy_symbol_print (stderr, \
702 Type, Value]b4_locations_if([, Location])[]b4_user_args[); \
703 YYFPRINTF (stderr, "\n"); \
704 } \
705 } while (YYID (0))
706
707 ]b4_yy_symbol_print_generate([b4_c_function_def])[
708
709 /*------------------------------------------------------------------.
710 | yy_stack_print -- Print the state stack from its BOTTOM up to its |
711 | TOP (included). |
712 `------------------------------------------------------------------*/
713
714 ]b4_c_function_def([yy_stack_print], [static void],
715 [[yytype_int16 *yybottom], [yybottom]],
716 [[yytype_int16 *yytop], [yytop]])[
717 {
718 YYFPRINTF (stderr, "Stack now");
719 for (; yybottom <= yytop; yybottom++)
720 {
721 int yybot = *yybottom;
722 YYFPRINTF (stderr, " %d", yybot);
723 }
724 YYFPRINTF (stderr, "\n");
725 }
726
727 # define YY_STACK_PRINT(Bottom, Top) \
728 do { \
729 if (yydebug) \
730 yy_stack_print ((Bottom), (Top)); \
731 } while (YYID (0))
732
733
734 /*------------------------------------------------.
735 | Report that the YYRULE is going to be reduced. |
736 `------------------------------------------------*/
737
738 ]b4_c_function_def([yy_reduce_print], [static void],
739 [[YYSTYPE *yyvsp], [yyvsp]],
740 b4_locations_if([[[YYLTYPE *yylsp], [yylsp]],
741 ])[[int yyrule], [yyrule]]m4_ifset([b4_parse_param], [,
742 b4_parse_param]))[
743 {
744 int yynrhs = yyr2[yyrule];
745 int yyi;
746 unsigned long int yylno = yyrline[yyrule];
747 YYFPRINTF (stderr, "Reducing stack by rule %d (line %lu):\n",
748 yyrule - 1, yylno);
749 /* The symbols being reduced. */
750 for (yyi = 0; yyi < yynrhs; yyi++)
751 {
752 fprintf (stderr, " $%d = ", yyi + 1);
753 yy_symbol_print (stderr, yyrhs[yyprhs[yyrule] + yyi],
754 &]b4_rhs_value(yynrhs, yyi + 1)[
755 ]b4_locations_if([, &]b4_rhs_location(yynrhs, yyi + 1))[]dnl
756 b4_user_args[);
757 fprintf (stderr, "\n");
758 }
759 }
760
761 # define YY_REDUCE_PRINT(Rule) \
762 do { \
763 if (yydebug) \
764 yy_reduce_print (yyvsp, ]b4_locations_if([yylsp, ])[Rule]b4_user_args[); \
765 } while (YYID (0))
766
767 /* Nonzero means print parse trace. It is left uninitialized so that
768 multiple parsers can coexist. */
769 int yydebug;
770 #else /* !YYDEBUG */
771 # define YYDPRINTF(Args)
772 # define YY_SYMBOL_PRINT(Title, Type, Value, Location)
773 # define YY_STACK_PRINT(Bottom, Top)
774 # define YY_REDUCE_PRINT(Rule)
775 #endif /* !YYDEBUG */
776
777
778 /* YYINITDEPTH -- initial size of the parser's stacks. */
779 #ifndef YYINITDEPTH
780 # define YYINITDEPTH ]b4_stack_depth_init[
781 #endif
782
783 /* YYMAXDEPTH -- maximum size the stacks can grow to (effective only
784 if the built-in stack extension method is used).
785
786 Do not make this value too large; the results are undefined if
787 YYSTACK_ALLOC_MAXIMUM < YYSTACK_BYTES (YYMAXDEPTH)
788 evaluated with infinite-precision integer arithmetic. */
789
790 #ifndef YYMAXDEPTH
791 # define YYMAXDEPTH ]b4_stack_depth_max[
792 #endif
793
794 \f
795
796 #if YYERROR_VERBOSE
797
798 # ifndef yystrlen
799 # if defined __GLIBC__ && defined _STRING_H
800 # define yystrlen strlen
801 # else
802 /* Return the length of YYSTR. */
803 ]b4_c_function_def([yystrlen], [static YYSIZE_T],
804 [[const char *yystr], [yystr]])[
805 {
806 YYSIZE_T yylen;
807 for (yylen = 0; yystr[yylen]; yylen++)
808 continue;
809 return yylen;
810 }
811 # endif
812 # endif
813
814 # ifndef yystpcpy
815 # if defined __GLIBC__ && defined _STRING_H && defined _GNU_SOURCE
816 # define yystpcpy stpcpy
817 # else
818 /* Copy YYSRC to YYDEST, returning the address of the terminating '\0' in
819 YYDEST. */
820 ]b4_c_function_def([yystpcpy], [static char *],
821 [[char *yydest], [yydest]], [[const char *yysrc], [yysrc]])[
822 {
823 char *yyd = yydest;
824 const char *yys = yysrc;
825
826 while ((*yyd++ = *yys++) != '\0')
827 continue;
828
829 return yyd - 1;
830 }
831 # endif
832 # endif
833
834 # ifndef yytnamerr
835 /* Copy to YYRES the contents of YYSTR after stripping away unnecessary
836 quotes and backslashes, so that it's suitable for yyerror. The
837 heuristic is that double-quoting is unnecessary unless the string
838 contains an apostrophe, a comma, or backslash (other than
839 backslash-backslash). YYSTR is taken from yytname. If YYRES is
840 null, do not copy; instead, return the length of what the result
841 would have been. */
842 static YYSIZE_T
843 yytnamerr (char *yyres, const char *yystr)
844 {
845 if (*yystr == '"')
846 {
847 YYSIZE_T yyn = 0;
848 char const *yyp = yystr;
849
850 for (;;)
851 switch (*++yyp)
852 {
853 case '\'':
854 case ',':
855 goto do_not_strip_quotes;
856
857 case '\\':
858 if (*++yyp != '\\')
859 goto do_not_strip_quotes;
860 /* Fall through. */
861 default:
862 if (yyres)
863 yyres[yyn] = *yyp;
864 yyn++;
865 break;
866
867 case '"':
868 if (yyres)
869 yyres[yyn] = '\0';
870 return yyn;
871 }
872 do_not_strip_quotes: ;
873 }
874
875 if (! yyres)
876 return yystrlen (yystr);
877
878 return yystpcpy (yyres, yystr) - yyres;
879 }
880 # endif
881
882 /* Copy into YYRESULT an error message about the unexpected token
883 YYCHAR while in state YYSTATE. Return the number of bytes copied,
884 including the terminating null byte. If YYRESULT is null, do not
885 copy anything; just return the number of bytes that would be
886 copied. As a special case, return 0 if an ordinary "syntax error"
887 message will do. Return YYSIZE_MAXIMUM if overflow occurs during
888 size calculation. */
889 static YYSIZE_T
890 yysyntax_error (char *yyresult, int yystate, int yychar)
891 {
892 int yyn = yypact[yystate];
893
894 if (! (YYPACT_NINF < yyn && yyn <= YYLAST))
895 return 0;
896 else
897 {
898 int yytype = YYTRANSLATE (yychar);
899 YYSIZE_T yysize0 = yytnamerr (0, yytname[yytype]);
900 YYSIZE_T yysize = yysize0;
901 YYSIZE_T yysize1;
902 int yysize_overflow = 0;
903 enum { YYERROR_VERBOSE_ARGS_MAXIMUM = 5 };
904 char const *yyarg[YYERROR_VERBOSE_ARGS_MAXIMUM];
905 int yyx;
906
907 # if 0
908 /* This is so xgettext sees the translatable formats that are
909 constructed on the fly. */
910 YY_("syntax error, unexpected %s");
911 YY_("syntax error, unexpected %s, expecting %s");
912 YY_("syntax error, unexpected %s, expecting %s or %s");
913 YY_("syntax error, unexpected %s, expecting %s or %s or %s");
914 YY_("syntax error, unexpected %s, expecting %s or %s or %s or %s");
915 # endif
916 char *yyfmt;
917 char const *yyf;
918 static char const yyunexpected[] = "syntax error, unexpected %s";
919 static char const yyexpecting[] = ", expecting %s";
920 static char const yyor[] = " or %s";
921 char yyformat[sizeof yyunexpected
922 + sizeof yyexpecting - 1
923 + ((YYERROR_VERBOSE_ARGS_MAXIMUM - 2)
924 * (sizeof yyor - 1))];
925 char const *yyprefix = yyexpecting;
926
927 /* Start YYX at -YYN if negative to avoid negative indexes in
928 YYCHECK. */
929 int yyxbegin = yyn < 0 ? -yyn : 0;
930
931 /* Stay within bounds of both yycheck and yytname. */
932 int yychecklim = YYLAST - yyn + 1;
933 int yyxend = yychecklim < YYNTOKENS ? yychecklim : YYNTOKENS;
934 int yycount = 1;
935
936 yyarg[0] = yytname[yytype];
937 yyfmt = yystpcpy (yyformat, yyunexpected);
938
939 for (yyx = yyxbegin; yyx < yyxend; ++yyx)
940 if (yycheck[yyx + yyn] == yyx && yyx != YYTERROR)
941 {
942 if (yycount == YYERROR_VERBOSE_ARGS_MAXIMUM)
943 {
944 yycount = 1;
945 yysize = yysize0;
946 yyformat[sizeof yyunexpected - 1] = '\0';
947 break;
948 }
949 yyarg[yycount++] = yytname[yyx];
950 yysize1 = yysize + yytnamerr (0, yytname[yyx]);
951 yysize_overflow |= (yysize1 < yysize);
952 yysize = yysize1;
953 yyfmt = yystpcpy (yyfmt, yyprefix);
954 yyprefix = yyor;
955 }
956
957 yyf = YY_(yyformat);
958 yysize1 = yysize + yystrlen (yyf);
959 yysize_overflow |= (yysize1 < yysize);
960 yysize = yysize1;
961
962 if (yysize_overflow)
963 return YYSIZE_MAXIMUM;
964
965 if (yyresult)
966 {
967 /* Avoid sprintf, as that infringes on the user's name space.
968 Don't have undefined behavior even if the translation
969 produced a string with the wrong number of "%s"s. */
970 char *yyp = yyresult;
971 int yyi = 0;
972 while ((*yyp = *yyf) != '\0')
973 {
974 if (*yyp == '%' && yyf[1] == 's' && yyi < yycount)
975 {
976 yyp += yytnamerr (yyp, yyarg[yyi++]);
977 yyf += 2;
978 }
979 else
980 {
981 yyp++;
982 yyf++;
983 }
984 }
985 }
986 return yysize;
987 }
988 }
989 #endif /* YYERROR_VERBOSE */
990 \f
991
992 ]b4_yydestruct_generate([b4_c_function_def])[
993
994 ]b4_push_if([],
995 [[/* Prevent warnings from -Wmissing-prototypes. */
996 #ifdef YYPARSE_PARAM
997 ]b4_c_function_decl([yyparse], [int],
998 [[void *YYPARSE_PARAM], [YYPARSE_PARAM]])[
999 #else /* ! YYPARSE_PARAM */
1000 ]b4_c_function_decl([yyparse], [int], b4_parse_param)[
1001 #endif /* ! YYPARSE_PARAM */]])
1002
1003 m4_divert_push([KILL])# ======================== M4 code.
1004 # b4_declare_scanner_communication_variables
1005 # ------------------------------------------
1006 # Declare the variables that are global, or local to YYPARSE if
1007 # pure-parser.
1008 m4_define([b4_declare_scanner_communication_variables],
1009 [[/* The lookahead symbol. */
1010 int yychar;
1011
1012 /* The semantic value of the lookahead symbol. */
1013 YYSTYPE yylval;
1014 ]b4_locations_if([[
1015 /* Location data for the lookahead symbol. */
1016 YYLTYPE yylloc;
1017 ]])b4_pure_if([], [[
1018 /* Number of syntax errors so far. */
1019 int yynerrs;
1020 ]])])
1021
1022 # b4_declare_parser_state_variables
1023 # ---------------------------------
1024 # Declare all the variables that are needed to maintain the parser state
1025 # between calls to yypush_parse.
1026 m4_define([b4_declare_parser_state_variables],
1027 [b4_pure_if([[ /* Number of syntax errors so far. */
1028 int yynerrs;
1029 ]])[
1030 int yystate;
1031 /* Number of tokens to shift before error messages enabled. */
1032 int yyerrstatus;
1033
1034 /* Three stacks and their tools:
1035 `yyss': related to states,
1036 `yyvs': related to semantic values,
1037 `yyls': related to locations.
1038
1039 Refer to the stacks thru separate pointers, to allow yyoverflow
1040 to reallocate them elsewhere. */
1041
1042 /* The state stack. */
1043 yytype_int16 yyssa[YYINITDEPTH];
1044 yytype_int16 *yyss;
1045 yytype_int16 *yyssp;
1046
1047 /* The semantic value stack. */
1048 YYSTYPE yyvsa[YYINITDEPTH];
1049 YYSTYPE *yyvs;
1050 YYSTYPE *yyvsp;
1051 ]b4_locations_if([[
1052 /* The location stack. */
1053 YYLTYPE yylsa[YYINITDEPTH];
1054 YYLTYPE *yyls;
1055 YYLTYPE *yylsp;
1056
1057 /* The locations where the error started and ended. */
1058 YYLTYPE yyerror_range[2];
1059 ]])[
1060 YYSIZE_T yystacksize;
1061 ]])
1062
1063 m4_divert_pop([KILL])dnl# ====================== End of M4 code.
1064
1065 b4_pure_if([], [b4_declare_scanner_communication_variables])
1066
1067 b4_push_if(
1068 [[struct yypstate
1069 {
1070 ]b4_declare_parser_state_variables[
1071 /* Used to determine if this is the first time this instance has
1072 been used. */
1073 int yynew;
1074 };
1075
1076 ]b4_pull_if([b4_c_function_def([[yyparse]], [[int]], b4_parse_param)[
1077 {
1078 return yypull_parse (0]m4_ifset([b4_parse_param],
1079 [[, ]b4_c_args(b4_parse_param)])[);
1080 }
1081
1082 ]b4_c_function_def([[yypull_parse]], [[int]],
1083 [[[yypstate *yyps]], [[yyps]]]m4_ifset([b4_parse_param], [,
1084 b4_parse_param]))[
1085 {
1086 int yystatus;
1087 yypstate *yyps_local;
1088 ]b4_pure_if([[ int yychar;
1089 YYSTYPE yylval;
1090 ]b4_locations_if([[ YYLTYPE yylloc;
1091 ]])])[
1092 if (yyps == 0)
1093 yyps_local = yypstate_new ();
1094 else
1095 yyps_local = yyps;
1096 do {
1097 yychar = YYLEX;
1098 yystatus =
1099 yypush_parse (yyps_local]b4_pure_if([[, yychar, &yylval]b4_locations_if([[, &yylloc]])])m4_ifset([b4_parse_param], [, b4_c_args(b4_parse_param)])[);
1100 } while (yystatus == YYPUSH_MORE);
1101 if (yyps == 0)
1102 yypstate_delete (yyps_local);
1103 return yystatus;
1104 }
1105 ]])[
1106 /* Initialize the parser data structure. */
1107 ]b4_c_function_def([[yypstate_new]], [[yypstate *]])[
1108 {
1109 yypstate *yyps = (yypstate *) malloc (sizeof *yyps);
1110 yyps->yynew = 1;
1111 return yyps;
1112 }
1113
1114 ]b4_c_function_def([[yypstate_delete]], [[void]],
1115 [[[yypstate *yyps]], [[yyps]]])[
1116 {
1117 free (yyps);
1118 }
1119
1120 ]b4_pure_if([[#define ]b4_prefix[nerrs yyps->]b4_prefix[nerrs
1121 ]])[#define yystate yyps->yystate
1122 #define yyerrstatus yyps->yyerrstatus
1123 #define yyssa yyps->yyssa
1124 #define yyss yyps->yyss
1125 #define yyssp yyps->yyssp
1126 #define yyvsa yyps->yyvsa
1127 #define yyvs yyps->yyvs
1128 #define yyvsp yyps->yyvsp
1129 ]b4_locations_if([[#define yylsa yyps->yylsa
1130 #define yyls yyps->yyls
1131 #define yylsp yyps->yylsp
1132 #define yyerror_range yyps->yyerror_range
1133 ]])[#define yystacksize yyps->yystacksize
1134 ]])[
1135
1136 /*-------------------------.
1137 | yyparse or yypush_parse. |
1138 `-------------------------*/
1139
1140 ]b4_push_if([
1141 b4_c_function_def([[yypush_parse]], [[int]],
1142 [[[yypstate *yyps]], [[yyps]]]b4_pure_if([,
1143 [[[int yypushed_char]], [[yypushed_char]]],
1144 [[[YYSTYPE const *yypushed_val]], [[yypushed_val]]]b4_locations_if([,
1145 [[[YYLTYPE const *yypushed_loc]], [[yypushed_loc]]]])])m4_ifset([b4_parse_param], [,
1146 b4_parse_param]))], [
1147 #ifdef YYPARSE_PARAM
1148 b4_c_function_def([yyparse], [int], [[void *YYPARSE_PARAM], [YYPARSE_PARAM]])
1149 #else /* ! YYPARSE_PARAM */
1150 b4_c_function_def([yyparse], [int], b4_parse_param)
1151 #endif])[
1152 {
1153 ]b4_pure_if([b4_declare_scanner_communication_variables])
1154 b4_push_if([b4_pure_if([], [[ int yypushed_char = yychar;
1155 YYSTYPE yypushed_val = yylval;
1156 ]b4_locations_if([[YYLTYPE yypushed_loc = yylloc;
1157 ]])])],
1158 [b4_declare_parser_state_variables])[
1159 int yyn;
1160 int yyresult;
1161 /* Look-ahead token as an internal (translated) token number. */
1162 int yytoken;
1163 /* The variables used to return semantic value and location from the
1164 action routines. */
1165 YYSTYPE yyval;
1166 ]b4_locations_if([[ YYLTYPE yyloc;
1167 ]])[
1168 #if YYERROR_VERBOSE
1169 /* Buffer for error messages, and its allocated size. */
1170 char yymsgbuf[128];
1171 char *yymsg = yymsgbuf;
1172 YYSIZE_T yymsg_alloc = sizeof yymsgbuf;
1173 #endif
1174
1175 #define YYPOPSTACK(N) (yyvsp -= (N), yyssp -= (N)]b4_locations_if([, yylsp -= (N)])[)
1176
1177 /* The number of symbols on the RHS of the reduced rule.
1178 Keep to zero when no symbol should be popped. */
1179 int yylen = 0;
1180 ]b4_push_if([[
1181 if (!yyps->yynew)
1182 {
1183 yyn = yypact[yystate];
1184 goto yyread_pushed_token;
1185 }
1186 ]])[
1187 yytoken = 0;
1188 yyss = yyssa;
1189 yyvs = yyvsa;
1190 ]b4_locations_if([[ yyls = yylsa;
1191 ]])[
1192 yystacksize = YYINITDEPTH;
1193
1194 YYDPRINTF ((stderr, "Starting parse\n"));
1195
1196 yystate = 0;
1197 yyerrstatus = 0;
1198 yynerrs = 0;
1199 yychar = YYEMPTY; /* Cause a token to be read. */
1200
1201 /* Initialize stack pointers.
1202 Waste one element of value and location stack
1203 so that they stay on the same level as the state stack.
1204 The wasted elements are never initialized. */
1205 yyssp = yyss;
1206 yyvsp = yyvs;
1207 ]b4_locations_if([[ yylsp = yyls;
1208
1209 #if YYLTYPE_IS_TRIVIAL
1210 /* Initialize the default location before parsing starts. */
1211 yylloc.first_line = yylloc.last_line = ]b4_location_initial_line[;
1212 yylloc.first_column = yylloc.last_column = ]b4_location_initial_column[;
1213 #endif
1214 ]])
1215 m4_ifdef([b4_initial_action], [
1216 m4_pushdef([b4_at_dollar], [m4_define([b4_at_dollar_used])yylloc])dnl
1217 m4_pushdef([b4_dollar_dollar], [m4_define([b4_dollar_dollar_used])yylval])dnl
1218 /* User initialization code. */
1219 b4_user_initial_action
1220 m4_popdef([b4_dollar_dollar])dnl
1221 m4_popdef([b4_at_dollar])])dnl
1222 m4_ifdef([b4_dollar_dollar_used],[[ yyvsp[0] = yylval;
1223 ]])dnl
1224 m4_ifdef([b4_at_dollar_used], [[ yylsp[0] = yylloc;
1225 ]])dnl
1226 [
1227 goto yysetstate;
1228
1229 /*------------------------------------------------------------.
1230 | yynewstate -- Push a new state, which is found in yystate. |
1231 `------------------------------------------------------------*/
1232 yynewstate:
1233 /* In all cases, when you get here, the value and location stacks
1234 have just been pushed. So pushing a state here evens the stacks. */
1235 yyssp++;
1236
1237 yysetstate:
1238 *yyssp = yystate;
1239
1240 if (yyss + yystacksize - 1 <= yyssp)
1241 {
1242 /* Get the current used size of the three stacks, in elements. */
1243 YYSIZE_T yysize = yyssp - yyss + 1;
1244
1245 #ifdef yyoverflow
1246 {
1247 /* Give user a chance to reallocate the stack. Use copies of
1248 these so that the &'s don't force the real ones into
1249 memory. */
1250 YYSTYPE *yyvs1 = yyvs;
1251 yytype_int16 *yyss1 = yyss;
1252 ]b4_locations_if([ YYLTYPE *yyls1 = yyls;])[
1253
1254 /* Each stack pointer address is followed by the size of the
1255 data in use in that stack, in bytes. This used to be a
1256 conditional around just the two extra args, but that might
1257 be undefined if yyoverflow is a macro. */
1258 yyoverflow (YY_("memory exhausted"),
1259 &yyss1, yysize * sizeof (*yyssp),
1260 &yyvs1, yysize * sizeof (*yyvsp),
1261 ]b4_locations_if([ &yyls1, yysize * sizeof (*yylsp),])[
1262 &yystacksize);
1263 ]b4_locations_if([ yyls = yyls1;])[
1264 yyss = yyss1;
1265 yyvs = yyvs1;
1266 }
1267 #else /* no yyoverflow */
1268 # ifndef YYSTACK_RELOCATE
1269 goto yyexhaustedlab;
1270 # else
1271 /* Extend the stack our own way. */
1272 if (YYMAXDEPTH <= yystacksize)
1273 goto yyexhaustedlab;
1274 yystacksize *= 2;
1275 if (YYMAXDEPTH < yystacksize)
1276 yystacksize = YYMAXDEPTH;
1277
1278 {
1279 yytype_int16 *yyss1 = yyss;
1280 union yyalloc *yyptr =
1281 (union yyalloc *) YYSTACK_ALLOC (YYSTACK_BYTES (yystacksize));
1282 if (! yyptr)
1283 goto yyexhaustedlab;
1284 YYSTACK_RELOCATE (yyss_alloc, yyss);
1285 YYSTACK_RELOCATE (yyvs_alloc, yyvs);
1286 ]b4_locations_if([ YYSTACK_RELOCATE (yyls_alloc, yyls);])[
1287 # undef YYSTACK_RELOCATE
1288 if (yyss1 != yyssa)
1289 YYSTACK_FREE (yyss1);
1290 }
1291 # endif
1292 #endif /* no yyoverflow */
1293
1294 yyssp = yyss + yysize - 1;
1295 yyvsp = yyvs + yysize - 1;
1296 ]b4_locations_if([ yylsp = yyls + yysize - 1;])[
1297
1298 YYDPRINTF ((stderr, "Stack size increased to %lu\n",
1299 (unsigned long int) yystacksize));
1300
1301 if (yyss + yystacksize - 1 <= yyssp)
1302 YYABORT;
1303 }
1304
1305 YYDPRINTF ((stderr, "Entering state %d\n", yystate));
1306
1307 if (yystate == YYFINAL)
1308 YYACCEPT;
1309
1310 goto yybackup;
1311
1312 /*-----------.
1313 | yybackup. |
1314 `-----------*/
1315 yybackup:
1316
1317 /* Do appropriate processing given the current state. Read a
1318 lookahead token if we need one and don't already have one. */
1319
1320 /* First try to decide what to do without reference to lookahead token. */
1321 yyn = yypact[yystate];
1322 if (yyn == YYPACT_NINF)
1323 goto yydefault;
1324
1325 /* Not known => get a lookahead token if don't already have one. */
1326
1327 /* YYCHAR is either YYEMPTY or YYEOF or a valid lookahead symbol. */
1328 if (yychar == YYEMPTY)
1329 {
1330 ]b4_push_if([[ if (!yyps->yynew)
1331 {
1332 ]b4_use_push_for_pull_if([],
1333 [[ YYDPRINTF ((stderr, "Return for a new token:\n"));
1334 ]])[ yyresult = YYPUSH_MORE;
1335 goto yypushreturn;
1336 }
1337 yyps->yynew = 0;
1338 ]b4_pure_if([], [[
1339 /* Restoring the pushed token is only necessary for the first
1340 yypush_parse invocation since subsequent invocations don't overwrite
1341 it before jumping to yyread_pushed_token. */
1342 yychar = yypushed_char;
1343 yylval = yypushed_val;
1344 ]b4_locations_if([[yylloc = yypushed_loc;
1345 ]])])[
1346 yyread_pushed_token:
1347 ]])[ YYDPRINTF ((stderr, "Reading a token: "));
1348 ]b4_push_if([b4_pure_if([[ yychar = yypushed_char;
1349 if (yypushed_val)
1350 yylval = *yypushed_val;
1351 ]b4_locations_if([[ if (yypushed_loc)
1352 yylloc = *yypushed_loc;
1353 ]])])],
1354 [[ yychar = YYLEX;
1355 ]])[ }
1356
1357 if (yychar <= YYEOF)
1358 {
1359 yychar = yytoken = YYEOF;
1360 YYDPRINTF ((stderr, "Now at end of input.\n"));
1361 }
1362 else
1363 {
1364 yytoken = YYTRANSLATE (yychar);
1365 YY_SYMBOL_PRINT ("Next token is", yytoken, &yylval, &yylloc);
1366 }
1367
1368 /* If the proper action on seeing token YYTOKEN is to reduce or to
1369 detect an error, take that action. */
1370 yyn += yytoken;
1371 if (yyn < 0 || YYLAST < yyn || yycheck[yyn] != yytoken)
1372 goto yydefault;
1373 yyn = yytable[yyn];
1374 if (yyn <= 0)
1375 {
1376 if (yyn == 0 || yyn == YYTABLE_NINF)
1377 goto yyerrlab;
1378 yyn = -yyn;
1379 goto yyreduce;
1380 }
1381
1382 /* Count tokens shifted since error; after three, turn off error
1383 status. */
1384 if (yyerrstatus)
1385 yyerrstatus--;
1386
1387 /* Shift the lookahead token. */
1388 YY_SYMBOL_PRINT ("Shifting", yytoken, &yylval, &yylloc);
1389
1390 /* Discard the shifted token. */
1391 yychar = YYEMPTY;
1392
1393 yystate = yyn;
1394 *++yyvsp = yylval;
1395 ]b4_locations_if([ *++yylsp = yylloc;])[
1396 goto yynewstate;
1397
1398
1399 /*-----------------------------------------------------------.
1400 | yydefault -- do the default action for the current state. |
1401 `-----------------------------------------------------------*/
1402 yydefault:
1403 yyn = yydefact[yystate];
1404 if (yyn == 0)
1405 goto yyerrlab;
1406 goto yyreduce;
1407
1408
1409 /*-----------------------------.
1410 | yyreduce -- Do a reduction. |
1411 `-----------------------------*/
1412 yyreduce:
1413 /* yyn is the number of a rule to reduce with. */
1414 yylen = yyr2[yyn];
1415
1416 /* If YYLEN is nonzero, implement the default value of the action:
1417 `$$ = $1'.
1418
1419 Otherwise, the following line sets YYVAL to garbage.
1420 This behavior is undocumented and Bison
1421 users should not rely upon it. Assigning to YYVAL
1422 unconditionally makes the parser a bit smaller, and it avoids a
1423 GCC warning that YYVAL may be used uninitialized. */
1424 yyval = yyvsp[1-yylen];
1425
1426 ]b4_locations_if(
1427 [[ /* Default location. */
1428 YYLLOC_DEFAULT (yyloc, (yylsp - yylen), yylen);]])[
1429 YY_REDUCE_PRINT (yyn);
1430 switch (yyn)
1431 {
1432 ]b4_user_actions[
1433 default: break;
1434 }
1435 YY_SYMBOL_PRINT ("-> $$ =", yyr1[yyn], &yyval, &yyloc);
1436
1437 YYPOPSTACK (yylen);
1438 yylen = 0;
1439 YY_STACK_PRINT (yyss, yyssp);
1440
1441 *++yyvsp = yyval;
1442 ]b4_locations_if([ *++yylsp = yyloc;])[
1443
1444 /* Now `shift' the result of the reduction. Determine what state
1445 that goes to, based on the state we popped back to and the rule
1446 number reduced by. */
1447
1448 yyn = yyr1[yyn];
1449
1450 yystate = yypgoto[yyn - YYNTOKENS] + *yyssp;
1451 if (0 <= yystate && yystate <= YYLAST && yycheck[yystate] == *yyssp)
1452 yystate = yytable[yystate];
1453 else
1454 yystate = yydefgoto[yyn - YYNTOKENS];
1455
1456 goto yynewstate;
1457
1458
1459 /*------------------------------------.
1460 | yyerrlab -- here on detecting error |
1461 `------------------------------------*/
1462 yyerrlab:
1463 /* If not already recovering from an error, report this error. */
1464 if (!yyerrstatus)
1465 {
1466 ++yynerrs;
1467 #if ! YYERROR_VERBOSE
1468 yyerror (]b4_yyerror_args[YY_("syntax error"));
1469 #else
1470 {
1471 YYSIZE_T yysize = yysyntax_error (0, yystate, yychar);
1472 if (yymsg_alloc < yysize && yymsg_alloc < YYSTACK_ALLOC_MAXIMUM)
1473 {
1474 YYSIZE_T yyalloc = 2 * yysize;
1475 if (! (yysize <= yyalloc && yyalloc <= YYSTACK_ALLOC_MAXIMUM))
1476 yyalloc = YYSTACK_ALLOC_MAXIMUM;
1477 if (yymsg != yymsgbuf)
1478 YYSTACK_FREE (yymsg);
1479 yymsg = (char *) YYSTACK_ALLOC (yyalloc);
1480 if (yymsg)
1481 yymsg_alloc = yyalloc;
1482 else
1483 {
1484 yymsg = yymsgbuf;
1485 yymsg_alloc = sizeof yymsgbuf;
1486 }
1487 }
1488
1489 if (0 < yysize && yysize <= yymsg_alloc)
1490 {
1491 (void) yysyntax_error (yymsg, yystate, yychar);
1492 yyerror (]b4_yyerror_args[yymsg);
1493 }
1494 else
1495 {
1496 yyerror (]b4_yyerror_args[YY_("syntax error"));
1497 if (yysize != 0)
1498 goto yyexhaustedlab;
1499 }
1500 }
1501 #endif
1502 }
1503
1504 ]b4_locations_if([[ yyerror_range[0] = yylloc;]])[
1505
1506 if (yyerrstatus == 3)
1507 {
1508 /* If just tried and failed to reuse lookahead token after an
1509 error, discard it. */
1510
1511 if (yychar <= YYEOF)
1512 {
1513 /* Return failure if at end of input. */
1514 if (yychar == YYEOF)
1515 YYABORT;
1516 }
1517 else
1518 {
1519 yydestruct ("Error: discarding",
1520 yytoken, &yylval]b4_locations_if([, &yylloc])[]b4_user_args[);
1521 yychar = YYEMPTY;
1522 }
1523 }
1524
1525 /* Else will try to reuse lookahead token after shifting the error
1526 token. */
1527 goto yyerrlab1;
1528
1529
1530 /*---------------------------------------------------.
1531 | yyerrorlab -- error raised explicitly by YYERROR. |
1532 `---------------------------------------------------*/
1533 yyerrorlab:
1534
1535 /* Pacify compilers like GCC when the user code never invokes
1536 YYERROR and the label yyerrorlab therefore never appears in user
1537 code. */
1538 if (/*CONSTCOND*/ 0)
1539 goto yyerrorlab;
1540
1541 ]b4_locations_if([[ yyerror_range[0] = yylsp[1-yylen];
1542 ]])[ /* Do not reclaim the symbols of the rule which action triggered
1543 this YYERROR. */
1544 YYPOPSTACK (yylen);
1545 yylen = 0;
1546 YY_STACK_PRINT (yyss, yyssp);
1547 yystate = *yyssp;
1548 goto yyerrlab1;
1549
1550
1551 /*-------------------------------------------------------------.
1552 | yyerrlab1 -- common code for both syntax error and YYERROR. |
1553 `-------------------------------------------------------------*/
1554 yyerrlab1:
1555 yyerrstatus = 3; /* Each real token shifted decrements this. */
1556
1557 for (;;)
1558 {
1559 yyn = yypact[yystate];
1560 if (yyn != YYPACT_NINF)
1561 {
1562 yyn += YYTERROR;
1563 if (0 <= yyn && yyn <= YYLAST && yycheck[yyn] == YYTERROR)
1564 {
1565 yyn = yytable[yyn];
1566 if (0 < yyn)
1567 break;
1568 }
1569 }
1570
1571 /* Pop the current state because it cannot handle the error token. */
1572 if (yyssp == yyss)
1573 YYABORT;
1574
1575 ]b4_locations_if([[ yyerror_range[0] = *yylsp;]])[
1576 yydestruct ("Error: popping",
1577 yystos[yystate], yyvsp]b4_locations_if([, yylsp])[]b4_user_args[);
1578 YYPOPSTACK (1);
1579 yystate = *yyssp;
1580 YY_STACK_PRINT (yyss, yyssp);
1581 }
1582
1583 *++yyvsp = yylval;
1584 ]b4_locations_if([[
1585 yyerror_range[1] = yylloc;
1586 /* Using YYLLOC is tempting, but would change the location of
1587 the lookahead. YYLOC is available though. */
1588 YYLLOC_DEFAULT (yyloc, (yyerror_range - 1), 2);
1589 *++yylsp = yyloc;]])[
1590
1591 /* Shift the error token. */
1592 YY_SYMBOL_PRINT ("Shifting", yystos[yyn], yyvsp, yylsp);
1593
1594 yystate = yyn;
1595 goto yynewstate;
1596
1597
1598 /*-------------------------------------.
1599 | yyacceptlab -- YYACCEPT comes here. |
1600 `-------------------------------------*/
1601 yyacceptlab:
1602 yyresult = 0;
1603 goto yyreturn;
1604
1605 /*-----------------------------------.
1606 | yyabortlab -- YYABORT comes here. |
1607 `-----------------------------------*/
1608 yyabortlab:
1609 yyresult = 1;
1610 goto yyreturn;
1611
1612 #ifndef yyoverflow
1613 /*-------------------------------------------------.
1614 | yyexhaustedlab -- memory exhaustion comes here. |
1615 `-------------------------------------------------*/
1616 yyexhaustedlab:
1617 yyerror (]b4_yyerror_args[YY_("memory exhausted"));
1618 yyresult = 2;
1619 /* Fall through. */
1620 #endif
1621
1622 yyreturn:
1623 if (yychar != YYEMPTY)
1624 yydestruct ("Cleanup: discarding lookahead",
1625 yytoken, &yylval]b4_locations_if([, &yylloc])[]b4_user_args[);
1626 /* Do not reclaim the symbols of the rule which action triggered
1627 this YYABORT or YYACCEPT. */
1628 YYPOPSTACK (yylen);
1629 YY_STACK_PRINT (yyss, yyssp);
1630 while (yyssp != yyss)
1631 {
1632 yydestruct ("Cleanup: popping",
1633 yystos[*yyssp], yyvsp]b4_locations_if([, yylsp])[]b4_user_args[);
1634 YYPOPSTACK (1);
1635 }
1636 #ifndef yyoverflow
1637 if (yyss != yyssa)
1638 YYSTACK_FREE (yyss);
1639 #endif
1640 ]b4_push_if([[ yyps->yynew = 1;
1641
1642 yypushreturn:
1643 ]])[#if YYERROR_VERBOSE
1644 if (yymsg != yymsgbuf)
1645 YYSTACK_FREE (yymsg);
1646 #endif
1647 /* Make sure YYID is used. */
1648 return YYID (yyresult);
1649 }
1650
1651
1652 ]b4_epilogue
1653 b4_defines_if(
1654 [@output b4_spec_defines_file
1655 b4_copyright([Skeleton interface for Bison's Yacc-like parsers in C],dnl '
1656 [1984, 1989, 1990, 2000, 2001, 2002, 2003, 2004, 2005, 2006])
1657
1658 m4_ifdef([b4_requires],
1659 [[/* Copy the %requires blocks. */
1660 ]b4_user_requires])[]dnl
1661
1662 b4_token_enums_defines(b4_tokens)
1663
1664 [#if ! defined YYSTYPE && ! defined YYSTYPE_IS_DECLARED
1665 ]m4_ifdef([b4_stype],
1666 [[typedef union ]b4_union_name[
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 m4_ifdef([b4_provides],
1718 [[/* Copy the %provides blocks. */
1719 ]b4_user_provides])[]
1720 ])dnl b4_defines_if
bison