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1 m4_divert(-1) -*- C -*-
2
3 # Yacc compatible skeleton for Bison
4
5 # Copyright (C) 1984, 1989, 1990, 2000, 2001, 2002, 2003, 2004, 2005, 2006
6 # Free Software Foundation, Inc.
7
8 # This program is free software; you can redistribute it and/or modify
9 # it under the terms of the GNU General Public License as published by
10 # the Free Software Foundation; either version 2 of the License, or
11 # (at your option) any later version.
12
13 # This program is distributed in the hope that it will be useful,
14 # but WITHOUT ANY WARRANTY; without even the implied warranty of
15 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 # GNU General Public License for more details.
17
18 # You should have received a copy of the GNU General Public License
19 # along with this program; if not, write to the Free Software
20 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
21 # 02110-1301 USA
22
23 m4_include(b4_pkgdatadir/[c.m4])
24
25 ## ---------------- ##
26 ## Default values. ##
27 ## ---------------- ##
28
29 # Stack parameters.
30 m4_define_default([b4_stack_depth_max], [10000])
31 m4_define_default([b4_stack_depth_init], [200])
32
33
34 ## ------------------------ ##
35 ## Pure/impure interfaces. ##
36 ## ------------------------ ##
37
38
39 # b4_yacc_pure_if(IF-TRUE, IF-FALSE)
40 # ----------------------------------
41 # Expand IF-TRUE, if %pure-parser and %parse-param, IF-FALSE otherwise.
42 m4_define([b4_yacc_pure_if],
43 [b4_pure_if([m4_ifset([b4_parse_param],
44 [$1], [$2])],
45 [$2])])
46
47
48 # b4_yyerror_args
49 # ---------------
50 # Arguments passed to yyerror: user args plus yylloc.
51 m4_define([b4_yyerror_args],
52 [b4_yacc_pure_if([b4_locations_if([&yylloc, ])])dnl
53 m4_ifset([b4_parse_param], [b4_c_args(b4_parse_param), ])])
54
55
56 # b4_lex_param
57 # ------------
58 # Accumulate in b4_lex_param all the yylex arguments.
59 # b4_lex_param arrives quoted twice, but we want to keep only one level.
60 m4_define([b4_lex_param],
61 m4_dquote(b4_pure_if([[[[YYSTYPE *]], [[&yylval]]][]dnl
62 b4_locations_if([, [[YYLTYPE *], [&yylloc]]])m4_ifdef([b4_lex_param], [, ])])dnl
63 m4_ifdef([b4_lex_param], b4_lex_param)))
64
65
66
67 ## ------------ ##
68 ## Data Types. ##
69 ## ------------ ##
70
71 # b4_int_type(MIN, MAX)
72 # ---------------------
73 # Return the smallest int type able to handle numbers ranging from
74 # MIN to MAX (included). Overwrite the version from c.m4, which
75 # uses only C89 types, so that the user can override the shorter
76 # types, and so that pre-C89 compilers are handled correctly.
77 m4_define([b4_int_type],
78 [m4_if(b4_ints_in($@, [0], [255]), [1], [yytype_uint8],
79 b4_ints_in($@, [-128], [127]), [1], [yytype_int8],
80
81 b4_ints_in($@, [0], [65535]), [1], [yytype_uint16],
82 b4_ints_in($@, [-32768], [32767]), [1], [yytype_int16],
83
84 m4_eval([0 <= $1]), [1], [unsigned int],
85
86 [int])])
87
88
89 ## ----------------- ##
90 ## Semantic Values. ##
91 ## ----------------- ##
92
93
94 # b4_lhs_value([TYPE])
95 # --------------------
96 # Expansion of $<TYPE>$.
97 m4_define([b4_lhs_value],
98 [(yyval[]m4_ifval([$1], [.$1]))])
99
100
101 # b4_rhs_value(RULE-LENGTH, NUM, [TYPE])
102 # --------------------------------------
103 # Expansion of $<TYPE>NUM, where the current rule has RULE-LENGTH
104 # symbols on RHS.
105 m4_define([b4_rhs_value],
106 [(yyvsp@{($2) - ($1)@}m4_ifval([$3], [.$3]))])
107
108
109
110 ## ----------- ##
111 ## Locations. ##
112 ## ----------- ##
113
114 # b4_lhs_location()
115 # -----------------
116 # Expansion of @$.
117 m4_define([b4_lhs_location],
118 [(yyloc)])
119
120
121 # b4_rhs_location(RULE-LENGTH, NUM)
122 # ---------------------------------
123 # Expansion of @NUM, where the current rule has RULE-LENGTH symbols
124 # on RHS.
125 m4_define([b4_rhs_location],
126 [(yylsp@{($2) - ($1)@})])
127
128
129
130 ## --------------------------------------------------------- ##
131 ## Defining symbol actions, e.g., printers and destructors. ##
132 ## --------------------------------------------------------- ##
133
134 # We do want M4 expansion after # for CPP macros.
135 m4_changecom()
136 m4_divert(0)dnl
137 @output b4_parser_file_name
138 b4_copyright([Skeleton implementation for Bison's Yacc-like parsers in C],dnl '
139 [1984, 1989, 1990, 2000, 2001, 2002, 2003, 2004, 2005, 2006])[
140
141 /* C LALR(1) parser skeleton written by Richard Stallman, by
142 simplifying the original so-called "semantic" parser. */
143
144 /* All symbols defined below should begin with yy or YY, to avoid
145 infringing on user name space. This should be done even for local
146 variables, as they might otherwise be expanded by user macros.
147 There are some unavoidable exceptions within include files to
148 define necessary library symbols; they are noted "INFRINGES ON
149 USER NAME SPACE" below. */
150
151 ]b4_identification
152 m4_if(b4_prefix, [yy], [],
153 [/* Substitute the variable and function names. */
154 ]b4_push_if([#define yypush_parse b4_prefix[]push_parse
155 #define yypstate_new b4_prefix[]pstate_new
156 #define yypstate_delete b4_prefix[]pstate_delete
157 #define yypstate b4_prefix[]pstate],
158 [#define yyparse b4_prefix[]parse])[
159 #define yylex b4_prefix[]lex
160 #define yyerror b4_prefix[]error
161 #define yylval b4_prefix[]lval
162 #define yychar b4_prefix[]char
163 #define yydebug b4_prefix[]debug
164 #define yynerrs b4_prefix[]nerrs
165 b4_locations_if([#define yylloc b4_prefix[]lloc])])[
166
167 /* Copy the first part of user declarations. */
168 ]b4_user_pre_prologue[
169
170 /* Enabling traces. */
171 #ifndef YYDEBUG
172 # define YYDEBUG ]b4_debug_flag[
173 #endif
174
175 /* Enabling verbose error messages. */
176 #ifdef YYERROR_VERBOSE
177 # undef YYERROR_VERBOSE
178 # define YYERROR_VERBOSE 1
179 #else
180 # define YYERROR_VERBOSE ]b4_error_verbose_flag[
181 #endif
182
183 /* Enabling the token table. */
184 #ifndef YYTOKEN_TABLE
185 # define YYTOKEN_TABLE ]b4_token_table[
186 #endif
187
188 ]m4_ifdef([b4_requires],
189 [[/* Copy the %requires blocks. */
190 ]b4_user_requires])[]dnl
191
192 b4_token_enums_defines(b4_tokens)[
193
194 #if ! defined YYSTYPE && ! defined YYSTYPE_IS_DECLARED
195 ]m4_ifdef([b4_stype],
196 [[typedef union ]b4_union_name[
197 ]b4_user_stype[
198 YYSTYPE;
199 # define YYSTYPE_IS_TRIVIAL 1]],
200 [m4_if(b4_tag_seen_flag, 0,
201 [[typedef int YYSTYPE;
202 # define YYSTYPE_IS_TRIVIAL 1]])])[
203 # define yystype YYSTYPE /* obsolescent; will be withdrawn */
204 # define YYSTYPE_IS_DECLARED 1
205 #endif
206
207 ]b4_locations_if([#if ! defined YYLTYPE && ! defined YYLTYPE_IS_DECLARED
208 typedef struct YYLTYPE
209 {
210 int first_line;
211 int first_column;
212 int last_line;
213 int last_column;
214 } YYLTYPE;
215 # define yyltype YYLTYPE /* obsolescent; will be withdrawn */
216 # define YYLTYPE_IS_DECLARED 1
217 # define YYLTYPE_IS_TRIVIAL 1
218 #endif])
219
220 m4_ifdef([b4_provides],
221 [[/* Copy the %provides blocks. */
222 ]b4_user_provides])[]dnl
223
224 [/* Copy the second part of user declarations. */
225 ]b4_user_post_prologue[
226
227 #ifdef short
228 # undef short
229 #endif
230
231 #ifdef YYTYPE_UINT8
232 typedef YYTYPE_UINT8 yytype_uint8;
233 #else
234 typedef unsigned char yytype_uint8;
235 #endif
236
237 #ifdef YYTYPE_INT8
238 typedef YYTYPE_INT8 yytype_int8;
239 #elif ]b4_c_modern[
240 typedef signed char yytype_int8;
241 #else
242 typedef short int yytype_int8;
243 #endif
244
245 #ifdef YYTYPE_UINT16
246 typedef YYTYPE_UINT16 yytype_uint16;
247 #else
248 typedef unsigned short int yytype_uint16;
249 #endif
250
251 #ifdef YYTYPE_INT16
252 typedef YYTYPE_INT16 yytype_int16;
253 #else
254 typedef short int yytype_int16;
255 #endif
256
257 #ifndef YYSIZE_T
258 # ifdef __SIZE_TYPE__
259 # define YYSIZE_T __SIZE_TYPE__
260 # elif defined size_t
261 # define YYSIZE_T size_t
262 # elif ! defined YYSIZE_T && ]b4_c_modern[
263 # include <stddef.h> /* INFRINGES ON USER NAME SPACE */
264 # define YYSIZE_T size_t
265 # else
266 # define YYSIZE_T unsigned int
267 # endif
268 #endif
269
270 #define YYSIZE_MAXIMUM ((YYSIZE_T) -1)
271
272 #ifndef YY_
273 # if YYENABLE_NLS
274 # if ENABLE_NLS
275 # include <libintl.h> /* INFRINGES ON USER NAME SPACE */
276 # define YY_(msgid) dgettext ("bison-runtime", msgid)
277 # endif
278 # endif
279 # ifndef YY_
280 # define YY_(msgid) msgid
281 # endif
282 #endif
283
284 /* Suppress unused-variable warnings by "using" E. */
285 #if ! defined lint || defined __GNUC__
286 # define YYUSE(e) ((void) (e))
287 #else
288 # define YYUSE(e) /* empty */
289 #endif
290
291 /* Identity function, used to suppress warnings about constant conditions. */
292 #ifndef lint
293 # define YYID(n) (n)
294 #else
295 ]b4_c_function_def([YYID], [static int], [[int yyi], [yyi]])[
296 {
297 return yyi;
298 }
299 #endif
300
301 #if ! defined yyoverflow || YYERROR_VERBOSE
302
303 /* The parser invokes alloca or malloc; define the necessary symbols. */
304
305 # ifdef YYSTACK_USE_ALLOCA
306 # if YYSTACK_USE_ALLOCA
307 # ifdef __GNUC__
308 # define YYSTACK_ALLOC __builtin_alloca
309 # elif defined __BUILTIN_VA_ARG_INCR
310 # include <alloca.h> /* INFRINGES ON USER NAME SPACE */
311 # elif defined _AIX
312 # define YYSTACK_ALLOC __alloca
313 # elif defined _MSC_VER
314 # include <malloc.h> /* INFRINGES ON USER NAME SPACE */
315 # define alloca _alloca
316 # else
317 # define YYSTACK_ALLOC alloca
318 # if ! defined _ALLOCA_H && ! defined _STDLIB_H && ]b4_c_modern[
319 # include <stdlib.h> /* INFRINGES ON USER NAME SPACE */
320 # ifndef _STDLIB_H
321 # define _STDLIB_H 1
322 # endif
323 # endif
324 # endif
325 # endif
326 # endif
327
328 # ifdef YYSTACK_ALLOC
329 /* Pacify GCC's `empty if-body' warning. */
330 # define YYSTACK_FREE(Ptr) do { /* empty */; } while (YYID (0))
331 # ifndef YYSTACK_ALLOC_MAXIMUM
332 /* The OS might guarantee only one guard page at the bottom of the stack,
333 and a page size can be as small as 4096 bytes. So we cannot safely
334 invoke alloca (N) if N exceeds 4096. Use a slightly smaller number
335 to allow for a few compiler-allocated temporary stack slots. */
336 # define YYSTACK_ALLOC_MAXIMUM 4032 /* reasonable circa 2006 */
337 # endif
338 # else
339 # define YYSTACK_ALLOC YYMALLOC
340 # define YYSTACK_FREE YYFREE
341 # ifndef YYSTACK_ALLOC_MAXIMUM
342 # define YYSTACK_ALLOC_MAXIMUM YYSIZE_MAXIMUM
343 # endif
344 # if (defined __cplusplus && ! defined _STDLIB_H \
345 && ! ((defined YYMALLOC || defined malloc) \
346 && (defined YYFREE || defined free)))
347 # include <stdlib.h> /* INFRINGES ON USER NAME SPACE */
348 # ifndef _STDLIB_H
349 # define _STDLIB_H 1
350 # endif
351 # endif
352 # ifndef YYMALLOC
353 # define YYMALLOC malloc
354 # if ! defined malloc && ! defined _STDLIB_H && ]b4_c_modern[
355 void *malloc (YYSIZE_T); /* INFRINGES ON USER NAME SPACE */
356 # endif
357 # endif
358 # ifndef YYFREE
359 # define YYFREE free
360 # if ! defined free && ! defined _STDLIB_H && ]b4_c_modern[
361 void free (void *); /* INFRINGES ON USER NAME SPACE */
362 # endif
363 # endif
364 # endif
365 #endif /* ! defined yyoverflow || YYERROR_VERBOSE */
366
367
368 #if (! defined yyoverflow \
369 && (! defined __cplusplus \
370 || (]b4_locations_if([[defined YYLTYPE_IS_TRIVIAL && YYLTYPE_IS_TRIVIAL \
371 && ]])[defined YYSTYPE_IS_TRIVIAL && YYSTYPE_IS_TRIVIAL)))
372
373 /* A type that is properly aligned for any stack member. */
374 union yyalloc
375 {
376 yytype_int16 yyss;
377 YYSTYPE yyvs;
378 ]b4_locations_if([ YYLTYPE yyls;
379 ])dnl
380 [};
381
382 /* The size of the maximum gap between one aligned stack and the next. */
383 # define YYSTACK_GAP_MAXIMUM (sizeof (union yyalloc) - 1)
384
385 /* The size of an array large to enough to hold all stacks, each with
386 N elements. */
387 ]b4_locations_if(
388 [# define YYSTACK_BYTES(N) \
389 ((N) * (sizeof (yytype_int16) + sizeof (YYSTYPE) + sizeof (YYLTYPE)) \
390 + 2 * YYSTACK_GAP_MAXIMUM)],
391 [# define YYSTACK_BYTES(N) \
392 ((N) * (sizeof (yytype_int16) + sizeof (YYSTYPE)) \
393 + YYSTACK_GAP_MAXIMUM)])[
394
395 /* Copy COUNT objects from FROM to TO. The source and destination do
396 not overlap. */
397 # ifndef YYCOPY
398 # if defined __GNUC__ && 1 < __GNUC__
399 # define YYCOPY(To, From, Count) \
400 __builtin_memcpy (To, From, (Count) * sizeof (*(From)))
401 # else
402 # define YYCOPY(To, From, Count) \
403 do \
404 { \
405 YYSIZE_T yyi; \
406 for (yyi = 0; yyi < (Count); yyi++) \
407 (To)[yyi] = (From)[yyi]; \
408 } \
409 while (YYID (0))
410 # endif
411 # endif
412
413 /* Relocate STACK from its old location to the new one. The
414 local variables YYSIZE and YYSTACKSIZE give the old and new number of
415 elements in the stack, and YYPTR gives the new location of the
416 stack. Advance YYPTR to a properly aligned location for the next
417 stack. */
418 # define YYSTACK_RELOCATE(Stack) \
419 do \
420 { \
421 YYSIZE_T yynewbytes; \
422 YYCOPY (&yyptr->Stack, Stack, yysize); \
423 Stack = &yyptr->Stack; \
424 yynewbytes = yystacksize * sizeof (*Stack) + YYSTACK_GAP_MAXIMUM; \
425 yyptr += yynewbytes / sizeof (*yyptr); \
426 } \
427 while (YYID (0))
428
429 #endif
430
431 /* YYFINAL -- State number of the termination state. */
432 #define YYFINAL ]b4_final_state_number[
433 /* YYLAST -- Last index in YYTABLE. */
434 #define YYLAST ]b4_last[
435
436 /* YYNTOKENS -- Number of terminals. */
437 #define YYNTOKENS ]b4_tokens_number[
438 /* YYNNTS -- Number of nonterminals. */
439 #define YYNNTS ]b4_nterms_number[
440 /* YYNRULES -- Number of rules. */
441 #define YYNRULES ]b4_rules_number[
442 /* YYNRULES -- Number of states. */
443 #define YYNSTATES ]b4_states_number[
444
445 /* YYTRANSLATE(YYLEX) -- Bison symbol number corresponding to YYLEX. */
446 #define YYUNDEFTOK ]b4_undef_token_number[
447 #define YYMAXUTOK ]b4_user_token_number_max[
448
449 #define YYTRANSLATE(YYX) \
450 ((unsigned int) (YYX) <= YYMAXUTOK ? yytranslate[YYX] : YYUNDEFTOK)
451
452 /* YYTRANSLATE[YYLEX] -- Bison symbol number corresponding to YYLEX. */
453 static const ]b4_int_type_for([b4_translate])[ yytranslate[] =
454 {
455 ]b4_translate[
456 };
457
458 #if YYDEBUG
459 /* YYPRHS[YYN] -- Index of the first RHS symbol of rule number YYN in
460 YYRHS. */
461 static const ]b4_int_type_for([b4_prhs])[ yyprhs[] =
462 {
463 ]b4_prhs[
464 };
465
466 /* YYRHS -- A `-1'-separated list of the rules' RHS. */
467 static const ]b4_int_type_for([b4_rhs])[ yyrhs[] =
468 {
469 ]b4_rhs[
470 };
471
472 /* YYRLINE[YYN] -- source line where rule number YYN was defined. */
473 static const ]b4_int_type_for([b4_rline])[ yyrline[] =
474 {
475 ]b4_rline[
476 };
477 #endif
478
479 #if YYDEBUG || YYERROR_VERBOSE || YYTOKEN_TABLE
480 /* YYTNAME[SYMBOL-NUM] -- String name of the symbol SYMBOL-NUM.
481 First, the terminals, then, starting at YYNTOKENS, nonterminals. */
482 static const char *const yytname[] =
483 {
484 ]b4_tname[
485 };
486 #endif
487
488 # ifdef YYPRINT
489 /* YYTOKNUM[YYLEX-NUM] -- Internal token number corresponding to
490 token YYLEX-NUM. */
491 static const ]b4_int_type_for([b4_toknum])[ yytoknum[] =
492 {
493 ]b4_toknum[
494 };
495 # endif
496
497 /* YYR1[YYN] -- Symbol number of symbol that rule YYN derives. */
498 static const ]b4_int_type_for([b4_r1])[ yyr1[] =
499 {
500 ]b4_r1[
501 };
502
503 /* YYR2[YYN] -- Number of symbols composing right hand side of rule YYN. */
504 static const ]b4_int_type_for([b4_r2])[ yyr2[] =
505 {
506 ]b4_r2[
507 };
508
509 /* YYDEFACT[STATE-NAME] -- Default rule to reduce with in state
510 STATE-NUM when YYTABLE doesn't specify something else to do. Zero
511 means the default is an error. */
512 static const ]b4_int_type_for([b4_defact])[ yydefact[] =
513 {
514 ]b4_defact[
515 };
516
517 /* YYDEFGOTO[NTERM-NUM]. */
518 static const ]b4_int_type_for([b4_defgoto])[ yydefgoto[] =
519 {
520 ]b4_defgoto[
521 };
522
523 /* YYPACT[STATE-NUM] -- Index in YYTABLE of the portion describing
524 STATE-NUM. */
525 #define YYPACT_NINF ]b4_pact_ninf[
526 static const ]b4_int_type_for([b4_pact])[ yypact[] =
527 {
528 ]b4_pact[
529 };
530
531 /* YYPGOTO[NTERM-NUM]. */
532 static const ]b4_int_type_for([b4_pgoto])[ yypgoto[] =
533 {
534 ]b4_pgoto[
535 };
536
537 /* YYTABLE[YYPACT[STATE-NUM]]. What to do in state STATE-NUM. If
538 positive, shift that token. If negative, reduce the rule which
539 number is the opposite. If zero, do what YYDEFACT says.
540 If YYTABLE_NINF, syntax error. */
541 #define YYTABLE_NINF ]b4_table_ninf[
542 static const ]b4_int_type_for([b4_table])[ yytable[] =
543 {
544 ]b4_table[
545 };
546
547 static const ]b4_int_type_for([b4_check])[ yycheck[] =
548 {
549 ]b4_check[
550 };
551
552 /* YYSTOS[STATE-NUM] -- The (internal number of the) accessing
553 symbol of state STATE-NUM. */
554 static const ]b4_int_type_for([b4_stos])[ yystos[] =
555 {
556 ]b4_stos[
557 };
558
559 #define yyerrok (yyerrstatus = 0)
560 #define yyclearin (yychar = YYEMPTY)
561 #define YYEMPTY (-2)
562 #define YYEOF 0
563
564 #define YYACCEPT goto yyacceptlab
565 #define YYABORT goto yyabortlab
566 #define YYERROR goto yyerrorlab
567
568
569 /* Like YYERROR except do call yyerror. This remains here temporarily
570 to ease the transition to the new meaning of YYERROR, for GCC.
571 Once GCC version 2 has supplanted version 1, this can go. */
572
573 #define YYFAIL goto yyerrlab
574
575 #define YYRECOVERING() (!!yyerrstatus)
576
577 #define YYBACKUP(Token, Value) \
578 do \
579 if (yychar == YYEMPTY && yylen == 1) \
580 { \
581 yychar = (Token); \
582 yylval = (Value); \
583 yytoken = YYTRANSLATE (yychar); \
584 YYPOPSTACK (1); \
585 goto yybackup; \
586 } \
587 else \
588 { \
589 yyerror (]b4_yyerror_args[YY_("syntax error: cannot back up")); \
590 YYERROR; \
591 } \
592 while (YYID (0))
593
594
595 #define YYTERROR 1
596 #define YYERRCODE 256
597
598
599 /* YYLLOC_DEFAULT -- Set CURRENT to span from RHS[1] to RHS[N].
600 If N is 0, then set CURRENT to the empty location which ends
601 the previous symbol: RHS[0] (always defined). */
602
603 #define YYRHSLOC(Rhs, K) ((Rhs)[K])
604 #ifndef YYLLOC_DEFAULT
605 # define YYLLOC_DEFAULT(Current, Rhs, N) \
606 do \
607 if (YYID (N)) \
608 { \
609 (Current).first_line = YYRHSLOC (Rhs, 1).first_line; \
610 (Current).first_column = YYRHSLOC (Rhs, 1).first_column; \
611 (Current).last_line = YYRHSLOC (Rhs, N).last_line; \
612 (Current).last_column = YYRHSLOC (Rhs, N).last_column; \
613 } \
614 else \
615 { \
616 (Current).first_line = (Current).last_line = \
617 YYRHSLOC (Rhs, 0).last_line; \
618 (Current).first_column = (Current).last_column = \
619 YYRHSLOC (Rhs, 0).last_column; \
620 } \
621 while (YYID (0))
622 #endif
623
624
625 /* YY_LOCATION_PRINT -- Print the location on the stream.
626 This macro was not mandated originally: define only if we know
627 we won't break user code: when these are the locations we know. */
628
629 #ifndef YY_LOCATION_PRINT
630 # if YYLTYPE_IS_TRIVIAL
631 # define YY_LOCATION_PRINT(File, Loc) \
632 fprintf (File, "%d.%d-%d.%d", \
633 (Loc).first_line, (Loc).first_column, \
634 (Loc).last_line, (Loc).last_column)
635 # else
636 # define YY_LOCATION_PRINT(File, Loc) ((void) 0)
637 # endif
638 #endif
639
640
641 /* YYLEX -- calling `yylex' with the right arguments. */
642
643 #ifdef YYLEX_PARAM
644 # define YYLEX yylex (]b4_pure_if([&yylval[]b4_locations_if([, &yylloc]), ])[YYLEX_PARAM)
645 #else
646 # define YYLEX ]b4_c_function_call([yylex], [int], b4_lex_param)[
647 #endif
648
649 /* Enable debugging if requested. */
650 #if YYDEBUG
651
652 # ifndef YYFPRINTF
653 # include <stdio.h> /* INFRINGES ON USER NAME SPACE */
654 # define YYFPRINTF fprintf
655 # endif
656
657 # define YYDPRINTF(Args) \
658 do { \
659 if (yydebug) \
660 YYFPRINTF Args; \
661 } while (YYID (0))
662
663 # define YY_SYMBOL_PRINT(Title, Type, Value, Location) \
664 do { \
665 if (yydebug) \
666 { \
667 YYFPRINTF (stderr, "%s ", Title); \
668 yy_symbol_print (stderr, \
669 Type, Value]b4_locations_if([, Location])[]b4_user_args[); \
670 YYFPRINTF (stderr, "\n"); \
671 } \
672 } while (YYID (0))
673
674 ]b4_yy_symbol_print_generate([b4_c_function_def])[
675
676 /*------------------------------------------------------------------.
677 | yy_stack_print -- Print the state stack from its BOTTOM up to its |
678 | TOP (included). |
679 `------------------------------------------------------------------*/
680
681 ]b4_c_function_def([yy_stack_print], [static void],
682 [[yytype_int16 *yybottom], [yybottom]],
683 [[yytype_int16 *yytop], [yytop]])[
684 {
685 YYFPRINTF (stderr, "Stack now");
686 for (; yybottom <= yytop; yybottom++)
687 {
688 int yybot = *yybottom;
689 YYFPRINTF (stderr, " %d", yybot);
690 }
691 YYFPRINTF (stderr, "\n");
692 }
693
694 # define YY_STACK_PRINT(Bottom, Top) \
695 do { \
696 if (yydebug) \
697 yy_stack_print ((Bottom), (Top)); \
698 } while (YYID (0))
699
700
701 /*------------------------------------------------.
702 | Report that the YYRULE is going to be reduced. |
703 `------------------------------------------------*/
704
705 ]b4_c_function_def([yy_reduce_print], [static void],
706 [[YYSTYPE *yyvsp], [yyvsp]],
707 b4_locations_if([[[YYLTYPE *yylsp], [yylsp]],
708 ])[[int yyrule], [yyrule]]m4_ifset([b4_parse_param], [,
709 ])b4_parse_param)[
710 {
711 int yynrhs = yyr2[yyrule];
712 int yyi;
713 unsigned long int yylno = yyrline[yyrule];
714 YYFPRINTF (stderr, "Reducing stack by rule %d (line %lu):\n",
715 yyrule - 1, yylno);
716 /* The symbols being reduced. */
717 for (yyi = 0; yyi < yynrhs; yyi++)
718 {
719 fprintf (stderr, " $%d = ", yyi + 1);
720 yy_symbol_print (stderr, yyrhs[yyprhs[yyrule] + yyi],
721 &]b4_rhs_value(yynrhs, yyi + 1)[
722 ]b4_locations_if([, &]b4_rhs_location(yynrhs, yyi + 1))[]dnl
723 b4_user_args[);
724 fprintf (stderr, "\n");
725 }
726 }
727
728 # define YY_REDUCE_PRINT(Rule) \
729 do { \
730 if (yydebug) \
731 yy_reduce_print (yyvsp, ]b4_locations_if([yylsp, ])[Rule]b4_user_args[); \
732 } while (YYID (0))
733
734 /* Nonzero means print parse trace. It is left uninitialized so that
735 multiple parsers can coexist. */
736 int yydebug;
737 #else /* !YYDEBUG */
738 # define YYDPRINTF(Args)
739 # define YY_SYMBOL_PRINT(Title, Type, Value, Location)
740 # define YY_STACK_PRINT(Bottom, Top)
741 # define YY_REDUCE_PRINT(Rule)
742 #endif /* !YYDEBUG */
743
744
745 /* YYINITDEPTH -- initial size of the parser's stacks. */
746 #ifndef YYINITDEPTH
747 # define YYINITDEPTH ]b4_stack_depth_init[
748 #endif
749
750 /* YYMAXDEPTH -- maximum size the stacks can grow to (effective only
751 if the built-in stack extension method is used).
752
753 Do not make this value too large; the results are undefined if
754 YYSTACK_ALLOC_MAXIMUM < YYSTACK_BYTES (YYMAXDEPTH)
755 evaluated with infinite-precision integer arithmetic. */
756
757 #ifndef YYMAXDEPTH
758 # define YYMAXDEPTH ]b4_stack_depth_max[
759 #endif
760
761 \f
762
763 #if YYERROR_VERBOSE
764
765 # ifndef yystrlen
766 # if defined __GLIBC__ && defined _STRING_H
767 # define yystrlen strlen
768 # else
769 /* Return the length of YYSTR. */
770 ]b4_c_function_def([yystrlen], [static YYSIZE_T],
771 [[const char *yystr], [yystr]])[
772 {
773 YYSIZE_T yylen;
774 for (yylen = 0; yystr[yylen]; yylen++)
775 continue;
776 return yylen;
777 }
778 # endif
779 # endif
780
781 # ifndef yystpcpy
782 # if defined __GLIBC__ && defined _STRING_H && defined _GNU_SOURCE
783 # define yystpcpy stpcpy
784 # else
785 /* Copy YYSRC to YYDEST, returning the address of the terminating '\0' in
786 YYDEST. */
787 ]b4_c_function_def([yystpcpy], [static char *],
788 [[char *yydest], [yydest]], [[const char *yysrc], [yysrc]])[
789 {
790 char *yyd = yydest;
791 const char *yys = yysrc;
792
793 while ((*yyd++ = *yys++) != '\0')
794 continue;
795
796 return yyd - 1;
797 }
798 # endif
799 # endif
800
801 # ifndef yytnamerr
802 /* Copy to YYRES the contents of YYSTR after stripping away unnecessary
803 quotes and backslashes, so that it's suitable for yyerror. The
804 heuristic is that double-quoting is unnecessary unless the string
805 contains an apostrophe, a comma, or backslash (other than
806 backslash-backslash). YYSTR is taken from yytname. If YYRES is
807 null, do not copy; instead, return the length of what the result
808 would have been. */
809 static YYSIZE_T
810 yytnamerr (char *yyres, const char *yystr)
811 {
812 if (*yystr == '"')
813 {
814 YYSIZE_T yyn = 0;
815 char const *yyp = yystr;
816
817 for (;;)
818 switch (*++yyp)
819 {
820 case '\'':
821 case ',':
822 goto do_not_strip_quotes;
823
824 case '\\':
825 if (*++yyp != '\\')
826 goto do_not_strip_quotes;
827 /* Fall through. */
828 default:
829 if (yyres)
830 yyres[yyn] = *yyp;
831 yyn++;
832 break;
833
834 case '"':
835 if (yyres)
836 yyres[yyn] = '\0';
837 return yyn;
838 }
839 do_not_strip_quotes: ;
840 }
841
842 if (! yyres)
843 return yystrlen (yystr);
844
845 return yystpcpy (yyres, yystr) - yyres;
846 }
847 # endif
848
849 /* Copy into YYRESULT an error message about the unexpected token
850 YYCHAR while in state YYSTATE. Return the number of bytes copied,
851 including the terminating null byte. If YYRESULT is null, do not
852 copy anything; just return the number of bytes that would be
853 copied. As a special case, return 0 if an ordinary "syntax error"
854 message will do. Return YYSIZE_MAXIMUM if overflow occurs during
855 size calculation. */
856 static YYSIZE_T
857 yysyntax_error (char *yyresult, int yystate, int yychar)
858 {
859 int yyn = yypact[yystate];
860
861 if (! (YYPACT_NINF < yyn && yyn <= YYLAST))
862 return 0;
863 else
864 {
865 int yytype = YYTRANSLATE (yychar);
866 YYSIZE_T yysize0 = yytnamerr (0, yytname[yytype]);
867 YYSIZE_T yysize = yysize0;
868 YYSIZE_T yysize1;
869 int yysize_overflow = 0;
870 enum { YYERROR_VERBOSE_ARGS_MAXIMUM = 5 };
871 char const *yyarg[YYERROR_VERBOSE_ARGS_MAXIMUM];
872 int yyx;
873
874 # if 0
875 /* This is so xgettext sees the translatable formats that are
876 constructed on the fly. */
877 YY_("syntax error, unexpected %s");
878 YY_("syntax error, unexpected %s, expecting %s");
879 YY_("syntax error, unexpected %s, expecting %s or %s");
880 YY_("syntax error, unexpected %s, expecting %s or %s or %s");
881 YY_("syntax error, unexpected %s, expecting %s or %s or %s or %s");
882 # endif
883 char *yyfmt;
884 char const *yyf;
885 static char const yyunexpected[] = "syntax error, unexpected %s";
886 static char const yyexpecting[] = ", expecting %s";
887 static char const yyor[] = " or %s";
888 char yyformat[sizeof yyunexpected
889 + sizeof yyexpecting - 1
890 + ((YYERROR_VERBOSE_ARGS_MAXIMUM - 2)
891 * (sizeof yyor - 1))];
892 char const *yyprefix = yyexpecting;
893
894 /* Start YYX at -YYN if negative to avoid negative indexes in
895 YYCHECK. */
896 int yyxbegin = yyn < 0 ? -yyn : 0;
897
898 /* Stay within bounds of both yycheck and yytname. */
899 int yychecklim = YYLAST - yyn + 1;
900 int yyxend = yychecklim < YYNTOKENS ? yychecklim : YYNTOKENS;
901 int yycount = 1;
902
903 yyarg[0] = yytname[yytype];
904 yyfmt = yystpcpy (yyformat, yyunexpected);
905
906 for (yyx = yyxbegin; yyx < yyxend; ++yyx)
907 if (yycheck[yyx + yyn] == yyx && yyx != YYTERROR)
908 {
909 if (yycount == YYERROR_VERBOSE_ARGS_MAXIMUM)
910 {
911 yycount = 1;
912 yysize = yysize0;
913 yyformat[sizeof yyunexpected - 1] = '\0';
914 break;
915 }
916 yyarg[yycount++] = yytname[yyx];
917 yysize1 = yysize + yytnamerr (0, yytname[yyx]);
918 yysize_overflow |= (yysize1 < yysize);
919 yysize = yysize1;
920 yyfmt = yystpcpy (yyfmt, yyprefix);
921 yyprefix = yyor;
922 }
923
924 yyf = YY_(yyformat);
925 yysize1 = yysize + yystrlen (yyf);
926 yysize_overflow |= (yysize1 < yysize);
927 yysize = yysize1;
928
929 if (yysize_overflow)
930 return YYSIZE_MAXIMUM;
931
932 if (yyresult)
933 {
934 /* Avoid sprintf, as that infringes on the user's name space.
935 Don't have undefined behavior even if the translation
936 produced a string with the wrong number of "%s"s. */
937 char *yyp = yyresult;
938 int yyi = 0;
939 while ((*yyp = *yyf) != '\0')
940 {
941 if (*yyp == '%' && yyf[1] == 's' && yyi < yycount)
942 {
943 yyp += yytnamerr (yyp, yyarg[yyi++]);
944 yyf += 2;
945 }
946 else
947 {
948 yyp++;
949 yyf++;
950 }
951 }
952 }
953 return yysize;
954 }
955 }
956 #endif /* YYERROR_VERBOSE */
957 \f
958
959 ]b4_yydestruct_generate([b4_c_function_def])[
960 \f
961
962 /* Prevent warnings from -Wmissing-prototypes. */
963
964 ]b4_push_if([
965 struct yypstate;
966 enum { YYPUSH_MORE = 4 };
967 ]b4_c_function_decl([yypstate_new], [struct yypstate *], [[void], []])[
968 ]b4_c_function_decl([yypstate_delete], [void], [[struct yypstate *yyps], [yyps]])[
969 ]b4_c_function_decl([yypush_parse], [int],
970 [[struct yypstate *yyps], [yyps]],
971 [[int yynchar], [yynchar]],
972 [[YYSTYPE const *yynlval], [yynlval]]
973 b4_locations_if([,[[YYLTYPE const *yynlloc], [yynlloc]]]))[
974 ],[#ifdef YYPARSE_PARAM
975 ]b4_c_function_decl([yyparse], [int],
976 [[void *YYPARSE_PARAM], [YYPARSE_PARAM]])[
977 #else /* ! YYPARSE_PARAM */
978 ]b4_c_function_decl([yyparse], [int], b4_parse_param)[
979 #endif /* ! YYPARSE_PARAM */])[
980
981 ]m4_divert_push([KILL])# ======================== M4 code.
982 # b4_declare_parser_variables
983 # ---------------------------
984 # Declare the variables that are global, or local to YYPARSE if
985 # pure-parser.
986 m4_define([b4_declare_parser_variables],
987 [/* The lookahead symbol. */
988 int yychar;
989
990 /* The semantic value of the lookahead symbol. */
991 YYSTYPE yylval;
992
993 /* Number of syntax errors so far. */
994 ]b4_push_if([],[
995 int yynerrs;])[b4_locations_if([
996 /* Location data for the lookahead symbol. */
997 YYLTYPE yylloc;])
998 ])
999
1000 m4_define([b4_yyssa],b4_push_if([yyps->yyssa],[yyssa]))
1001 m4_define([b4_yyerror_range],b4_push_if([yyps->yyerror_range],[yyerror_range]))
1002
1003 # b4_declare_yyparse_variables
1004 # ----------------------------
1005 # Declare all the variables that are needed local to YYPARSE
1006 m4_define([b4_declare_yyparse_variables],
1007 [[struct yypstate
1008 {
1009 int yystate;
1010 int yyn;
1011 int yyresult;
1012 /* Number of tokens to shift before error messages enabled. */
1013 int yyerrstatus;
1014 /* Look-ahead token as an internal (translated) token number. */
1015 int yytoken;
1016
1017 /* Three stacks and their tools:
1018 `yyss': related to states,
1019 `yyvs': related to semantic values,
1020 `yyls': related to locations.
1021
1022 Refer to the stacks thru separate pointers, to allow yyoverflow
1023 to reallocate them elsewhere. */
1024
1025 /* The state stack. */
1026 yytype_int16 yyssa[YYINITDEPTH];
1027 yytype_int16 *yyss;
1028 yytype_int16 *yyssp;
1029
1030 /* The semantic value stack. */
1031 YYSTYPE yyvsa[YYINITDEPTH];
1032 YYSTYPE *yyvs;
1033 YYSTYPE *yyvsp;]]b4_locations_if([[[
1034 /* The location stack. */
1035 YYLTYPE yylsa[YYINITDEPTH];
1036 YYLTYPE *yyls;
1037 YYLTYPE *yylsp;
1038 /* The locations where the error started and ended. */
1039 YYLTYPE yyerror_range[2];]]])[
1040 YYSIZE_T yystacksize;
1041 /* The variables used to return semantic value and location from the
1042 action routines. */
1043 YYSTYPE yyval;
1044 /* Used to determine if this is the first time this instance has
1045 been used. */
1046 int yynew;]b4_locations_if([YYLTYPE yyloc;])[
1047 };
1048
1049 /* Initialize the parser data structure. */
1050 ]b4_c_function_def([yypstate_new], [struct yypstate *])[
1051 {
1052 struct yypstate *yyps = (struct yypstate *) malloc (sizeof *yyps);
1053 yyps->yystate = 0;
1054 yyps->yyresult = -1;
1055 yyps->yyerrstatus = 0;
1056 yyps->yytoken = 0;
1057
1058 yyps->yyss = yyps->yyssa;
1059 yyps->yyvs = yyps->yyvsa;
1060
1061 ]b4_locations_if([
1062 yyps->yyls = yyps->yylsa;])[
1063 yyps->yystacksize = YYINITDEPTH;
1064
1065 yyps->yyssp = yyps->yyss;
1066 yyps->yyvsp = yyps->yyvs;
1067
1068 yyps->yynew = 1;
1069
1070 ]b4_locations_if([ yyps->yylsp = yyps->yyls;])[
1071
1072 return yyps;
1073 }
1074
1075 ]b4_c_function_def([yypstate_delete], [void],
1076 [[struct yypstate *yyps], [yyps]])[
1077 {
1078 free (yyps);
1079 }
1080 ])
1081 m4_divert_pop([KILL])dnl# ====================== End of M4 code.
1082
1083 b4_push_if([],[b4_pure_if([],
1084 [b4_declare_parser_variables])])
1085
1086 b4_push_if([b4_declare_yyparse_variables])
1087
1088 /*-------------------------.
1089 | yyparse or yypush_parse. |
1090 `-------------------------*/
1091
1092 b4_push_if([
1093 b4_c_function_def([yypush_parse], [int], [[struct yypstate *yyps], [yyps]],
1094 [[int yynchar], [yynchar]],
1095 [[YYSTYPE const *yynlval], [yynlval]]
1096 b4_locations_if([,[[YYLTYPE const *yynlloc], [yynlloc]]]))],[
1097 #ifdef YYPARSE_PARAM
1098 b4_c_function_def([yyparse], [int], [[void *YYPARSE_PARAM], [YYPARSE_PARAM]])
1099 #else /* ! YYPARSE_PARAM */
1100 b4_c_function_def([yyparse], [int], b4_parse_param)
1101 #endif])
1102 {[
1103 ]b4_pure_if([b4_declare_parser_variables])[
1104 ]b4_push_if([b4_declare_parser_variables])[
1105 int yystate;
1106 int yyn;
1107 int yyresult;
1108 /* Number of tokens to shift before error messages enabled. */
1109 int yyerrstatus;
1110 /* Lookahead token as an internal (translated) token number. */
1111 int yytoken = 0;
1112 #if YYERROR_VERBOSE
1113 /* Buffer for error messages, and its allocated size. */
1114 char yymsgbuf[128];
1115 char *yymsg = yymsgbuf;
1116 YYSIZE_T yymsg_alloc = sizeof yymsgbuf;
1117 #endif
1118
1119 /* Three stacks and their tools:
1120 `yyss': related to states,
1121 `yyvs': related to semantic values,
1122 `yyls': related to locations.
1123
1124 Refer to the stacks thru separate pointers, to allow yyoverflow
1125 to reallocate them elsewhere. */
1126
1127 /* The state stack. */
1128 yytype_int16 yyssa[YYINITDEPTH];
1129 yytype_int16 *yyss = yyssa;
1130 yytype_int16 *yyssp;
1131
1132 /* The semantic value stack. */
1133 YYSTYPE yyvsa[YYINITDEPTH];
1134 YYSTYPE *yyvs = yyvsa;
1135 YYSTYPE *yyvsp;
1136
1137 ]b4_locations_if(
1138 [[ /* The location stack. */
1139 YYLTYPE yylsa[YYINITDEPTH];
1140 YYLTYPE *yyls = yylsa;
1141 YYLTYPE *yylsp;
1142 /* The locations where the error started and ended. */
1143 ]b4_push_if([],[YYLTYPE yyerror_range[[2]]])[;
1144 ]])[
1145
1146 #define YYPOPSTACK(N) (yyvsp -= (N), yyssp -= (N)]b4_locations_if([, yylsp -= (N)])[)
1147
1148 YYSIZE_T yystacksize = YYINITDEPTH;
1149
1150 /* The variables used to return semantic value and location from the
1151 action routines. */
1152 YYSTYPE yyval;
1153 ]b4_locations_if([ YYLTYPE yyloc;])[
1154
1155 /* The number of symbols on the RHS of the reduced rule.
1156 Keep to zero when no symbol should be popped. */
1157 int yylen = 0;
1158
1159 YYDPRINTF ((stderr, "Starting parse\n"));
1160
1161 yystate = 0;
1162 yyerrstatus = 0;
1163 ]b4_push_if([ yychar = yynchar;
1164 if (yynlval)
1165 yylval = *yynlval;
1166 ]b4_locations_if([ if (yynlloc)
1167 yylloc = *yynlloc;])[],[yynerrs = 0;
1168 yychar = YYEMPTY; /* Cause a token to be read. */])[
1169
1170 /* Initialize stack pointers.
1171 Waste one element of value and location stack
1172 so that they stay on the same level as the state stack.
1173 The wasted elements are never initialized. */
1174
1175 yyssp = yyss;
1176 yyvsp = yyvs;
1177 ]b4_locations_if([[ yylsp = yyls;
1178 ]b4_push_if([],[
1179 #if YYLTYPE_IS_TRIVIAL
1180 /* Initialize the default location before parsing starts. */
1181 yylloc.first_line = yylloc.last_line = ]b4_location_initial_line[;
1182 yylloc.first_column = yylloc.last_column = ]b4_location_initial_column[;
1183 #endif])[
1184 ]])
1185 m4_ifdef([b4_initial_action], [
1186 m4_pushdef([b4_at_dollar], [m4_define([b4_at_dollar_used])yylloc])dnl
1187 m4_pushdef([b4_dollar_dollar], [m4_define([b4_dollar_dollar_used])yylval])dnl
1188 /* User initialization code. */
1189 b4_user_initial_action
1190 m4_popdef([b4_dollar_dollar])dnl
1191 m4_popdef([b4_at_dollar])])dnl
1192 m4_ifdef([b4_dollar_dollar_used],[[ yyvsp[0] = yylval;
1193 ]])dnl
1194 m4_ifdef([b4_at_dollar_used], [[ yylsp[0] = yylloc;
1195 ]])dnl
1196 [ ]b4_push_if([
1197 /* Initialize the locals to the current context. */
1198 yystate = yyps->yystate;
1199 yyn = yyps->yyn;
1200 yyresult = yyps->yyresult;
1201 yyerrstatus = yyps->yyerrstatus;
1202 yytoken = yyps->yytoken;
1203
1204 yyss = yyps->yyss;
1205 yyssp = yyps->yyssp;
1206
1207 yyvs = yyps->yyvs;
1208 yyvsp = yyps->yyvsp;
1209
1210 ]b4_locations_if([[ /* The location stack. */
1211 yyls = yyps->yyls;
1212 yylsp = yyps->yylsp;]])[
1213
1214 yystacksize = yyps->yystacksize;
1215 yyval = yyps->yyval;
1216 ]b4_locations_if([yyloc = yyps->yyloc;])[
1217 if (yyps->yynew == 0)
1218 {
1219 goto gottoken;
1220 }
1221 yyps->yynew= 0;])[
1222 goto yysetstate;
1223
1224 /*------------------------------------------------------------.
1225 | yynewstate -- Push a new state, which is found in yystate. |
1226 `------------------------------------------------------------*/
1227 yynewstate:
1228 /* In all cases, when you get here, the value and location stacks
1229 have just been pushed. So pushing a state here evens the stacks. */
1230 yyssp++;
1231
1232 yysetstate:
1233 *yyssp = yystate;
1234
1235 if (yyss + yystacksize - 1 <= yyssp)
1236 {
1237 /* Get the current used size of the three stacks, in elements. */
1238 YYSIZE_T yysize = yyssp - yyss + 1;
1239
1240 #ifdef yyoverflow
1241 {
1242 /* Give user a chance to reallocate the stack. Use copies of
1243 these so that the &'s don't force the real ones into
1244 memory. */
1245 YYSTYPE *yyvs1 = yyvs;
1246 yytype_int16 *yyss1 = yyss;
1247 ]b4_locations_if([ YYLTYPE *yyls1 = yyls;])[
1248
1249 /* Each stack pointer address is followed by the size of the
1250 data in use in that stack, in bytes. This used to be a
1251 conditional around just the two extra args, but that might
1252 be undefined if yyoverflow is a macro. */
1253 yyoverflow (YY_("memory exhausted"),
1254 &yyss1, yysize * sizeof (*yyssp),
1255 &yyvs1, yysize * sizeof (*yyvsp),
1256 ]b4_locations_if([ &yyls1, yysize * sizeof (*yylsp),])[
1257 &yystacksize);
1258 ]b4_locations_if([ yyls = yyls1;])[
1259 yyss = yyss1;
1260 yyvs = yyvs1;
1261 }
1262 #else /* no yyoverflow */
1263 # ifndef YYSTACK_RELOCATE
1264 goto yyexhaustedlab;
1265 # else
1266 /* Extend the stack our own way. */
1267 if (YYMAXDEPTH <= yystacksize)
1268 goto yyexhaustedlab;
1269 yystacksize *= 2;
1270 if (YYMAXDEPTH < yystacksize)
1271 yystacksize = YYMAXDEPTH;
1272
1273 {
1274 yytype_int16 *yyss1 = yyss;
1275 union yyalloc *yyptr =
1276 (union yyalloc *) YYSTACK_ALLOC (YYSTACK_BYTES (yystacksize));
1277 if (! yyptr)
1278 goto yyexhaustedlab;
1279 YYSTACK_RELOCATE (yyss);
1280 YYSTACK_RELOCATE (yyvs);
1281 ]b4_locations_if([ YYSTACK_RELOCATE (yyls);])[
1282 # undef YYSTACK_RELOCATE
1283 if (yyss1 != ]b4_yyssa[)
1284 YYSTACK_FREE (yyss1);
1285 }
1286 # endif
1287 #endif /* no yyoverflow */
1288
1289 yyssp = yyss + yysize - 1;
1290 yyvsp = yyvs + yysize - 1;
1291 ]b4_locations_if([ yylsp = yyls + yysize - 1;])[
1292
1293 YYDPRINTF ((stderr, "Stack size increased to %lu\n",
1294 (unsigned long int) yystacksize));
1295
1296 if (yyss + yystacksize - 1 <= yyssp)
1297 YYABORT;
1298 }
1299
1300 YYDPRINTF ((stderr, "Entering state %d\n", yystate));
1301
1302 if (yystate == YYFINAL)
1303 YYACCEPT;
1304
1305 goto yybackup;
1306
1307 /*-----------.
1308 | yybackup. |
1309 `-----------*/
1310 yybackup:
1311
1312 /* Do appropriate processing given the current state. Read a
1313 lookahead token if we need one and don't already have one. */
1314
1315 /* First try to decide what to do without reference to lookahead token. */
1316 yyn = yypact[yystate];
1317 if (yyn == YYPACT_NINF)
1318 goto yydefault;
1319
1320 /* Not known => get a lookahead token if don't already have one. */
1321
1322 /* YYCHAR is either YYEMPTY or YYEOF or a valid lookahead symbol. */
1323 if (yychar == YYEMPTY)
1324 {
1325 ]b4_push_if([
1326 YYDPRINTF ((stderr, "Return for a new token:\n"));
1327 yyresult = YYPUSH_MORE;
1328 /* Initialize the locals to the current context. */
1329 yyps->yystate = yystate;
1330 yyps->yyn = yyn;
1331 yyps->yyerrstatus = yyerrstatus;
1332 yyps->yytoken = yytoken;
1333
1334 yyps->yyss = yyss;
1335 yyps->yyssp = yyssp;
1336
1337 yyps->yyvs = yyvs;
1338 yyps->yyvsp = yyvsp;
1339
1340 ]b4_locations_if([[ /* The location stack. */
1341 yyps->yyls = yyls;
1342 yyps->yylsp = yylsp;]])[
1343
1344 yyps->yystacksize = yystacksize;
1345 yyps->yyval = yyval;
1346 ]b4_locations_if([yyps->yyloc = yyloc;])[
1347 goto yypushreturn;
1348 gottoken:])[
1349 YYDPRINTF ((stderr, "Reading a token: "));
1350 ]b4_push_if([], [yychar = YYLEX;])[
1351 }
1352
1353 if (yychar <= YYEOF)
1354 {
1355 yychar = yytoken = YYEOF;
1356 YYDPRINTF ((stderr, "Now at end of input.\n"));
1357 }
1358 else
1359 {
1360 yytoken = YYTRANSLATE (yychar);
1361 YY_SYMBOL_PRINT ("Next token is", yytoken, &yylval, &yylloc);
1362 }
1363
1364 /* If the proper action on seeing token YYTOKEN is to reduce or to
1365 detect an error, take that action. */
1366 yyn += yytoken;
1367 if (yyn < 0 || YYLAST < yyn || yycheck[yyn] != yytoken)
1368 goto yydefault;
1369 yyn = yytable[yyn];
1370 if (yyn <= 0)
1371 {
1372 if (yyn == 0 || yyn == YYTABLE_NINF)
1373 goto yyerrlab;
1374 yyn = -yyn;
1375 goto yyreduce;
1376 }
1377
1378 /* Count tokens shifted since error; after three, turn off error
1379 status. */
1380 if (yyerrstatus)
1381 yyerrstatus--;
1382
1383 /* Shift the lookahead token. */
1384 YY_SYMBOL_PRINT ("Shifting", yytoken, &yylval, &yylloc);
1385
1386 /* Discard the shifted token. */
1387 yychar = YYEMPTY;
1388
1389 yystate = yyn;
1390 *++yyvsp = yylval;
1391 ]b4_locations_if([ *++yylsp = yylloc;])[
1392 goto yynewstate;
1393
1394
1395 /*-----------------------------------------------------------.
1396 | yydefault -- do the default action for the current state. |
1397 `-----------------------------------------------------------*/
1398 yydefault:
1399 yyn = yydefact[yystate];
1400 if (yyn == 0)
1401 goto yyerrlab;
1402 goto yyreduce;
1403
1404
1405 /*-----------------------------.
1406 | yyreduce -- Do a reduction. |
1407 `-----------------------------*/
1408 yyreduce:
1409 /* yyn is the number of a rule to reduce with. */
1410 yylen = yyr2[yyn];
1411
1412 /* If YYLEN is nonzero, implement the default value of the action:
1413 `$$ = $1'.
1414
1415 Otherwise, the following line sets YYVAL to garbage.
1416 This behavior is undocumented and Bison
1417 users should not rely upon it. Assigning to YYVAL
1418 unconditionally makes the parser a bit smaller, and it avoids a
1419 GCC warning that YYVAL may be used uninitialized. */
1420 yyval = yyvsp[1-yylen];
1421
1422 ]b4_locations_if(
1423 [[ /* Default location. */
1424 YYLLOC_DEFAULT (yyloc, (yylsp - yylen), yylen);]])[
1425 YY_REDUCE_PRINT (yyn);
1426 switch (yyn)
1427 {
1428 ]b4_user_actions[
1429 default: break;
1430 }
1431 YY_SYMBOL_PRINT ("-> $$ =", yyr1[yyn], &yyval, &yyloc);
1432
1433 YYPOPSTACK (yylen);
1434 yylen = 0;
1435 YY_STACK_PRINT (yyss, yyssp);
1436
1437 *++yyvsp = yyval;
1438 ]b4_locations_if([ *++yylsp = yyloc;])[
1439
1440 /* Now `shift' the result of the reduction. Determine what state
1441 that goes to, based on the state we popped back to and the rule
1442 number reduced by. */
1443
1444 yyn = yyr1[yyn];
1445
1446 yystate = yypgoto[yyn - YYNTOKENS] + *yyssp;
1447 if (0 <= yystate && yystate <= YYLAST && yycheck[yystate] == *yyssp)
1448 yystate = yytable[yystate];
1449 else
1450 yystate = yydefgoto[yyn - YYNTOKENS];
1451
1452 goto yynewstate;
1453
1454
1455 /*------------------------------------.
1456 | yyerrlab -- here on detecting error |
1457 `------------------------------------*/
1458 yyerrlab:
1459 /* If not already recovering from an error, report this error. */
1460 if (!yyerrstatus)
1461 {
1462 ]b4_push_if([],[ ++yynerrs;])[
1463 #if ! YYERROR_VERBOSE
1464 yyerror (]b4_yyerror_args[YY_("syntax error"));
1465 #else
1466 {
1467 YYSIZE_T yysize = yysyntax_error (0, yystate, yychar);
1468 if (yymsg_alloc < yysize && yymsg_alloc < YYSTACK_ALLOC_MAXIMUM)
1469 {
1470 YYSIZE_T yyalloc = 2 * yysize;
1471 if (! (yysize <= yyalloc && yyalloc <= YYSTACK_ALLOC_MAXIMUM))
1472 yyalloc = YYSTACK_ALLOC_MAXIMUM;
1473 if (yymsg != yymsgbuf)
1474 YYSTACK_FREE (yymsg);
1475 yymsg = (char *) YYSTACK_ALLOC (yyalloc);
1476 if (yymsg)
1477 yymsg_alloc = yyalloc;
1478 else
1479 {
1480 yymsg = yymsgbuf;
1481 yymsg_alloc = sizeof yymsgbuf;
1482 }
1483 }
1484
1485 if (0 < yysize && yysize <= yymsg_alloc)
1486 {
1487 (void) yysyntax_error (yymsg, yystate, yychar);
1488 yyerror (]b4_yyerror_args[yymsg);
1489 }
1490 else
1491 {
1492 yyerror (]b4_yyerror_args[YY_("syntax error"));
1493 if (yysize != 0)
1494 goto yyexhaustedlab;
1495 }
1496 }
1497 #endif
1498 }
1499
1500 ]b4_locations_if([[ ]b4_yyerror_range[[0] = yylloc;]])[
1501
1502 if (yyerrstatus == 3)
1503 {
1504 /* If just tried and failed to reuse lookahead token after an
1505 error, discard it. */
1506
1507 if (yychar <= YYEOF)
1508 {
1509 /* Return failure if at end of input. */
1510 if (yychar == YYEOF)
1511 YYABORT;
1512 }
1513 else
1514 {
1515 yydestruct ("Error: discarding",
1516 yytoken, &yylval]b4_locations_if([, &yylloc])[]b4_user_args[);
1517 yychar = YYEMPTY;
1518 }
1519 }
1520
1521 /* Else will try to reuse lookahead token after shifting the error
1522 token. */
1523 goto yyerrlab1;
1524
1525
1526 /*---------------------------------------------------.
1527 | yyerrorlab -- error raised explicitly by YYERROR. |
1528 `---------------------------------------------------*/
1529 yyerrorlab:
1530
1531 /* Pacify compilers like GCC when the user code never invokes
1532 YYERROR and the label yyerrorlab therefore never appears in user
1533 code. */
1534 if (/*CONSTCOND*/ 0)
1535 goto yyerrorlab;
1536
1537 ]b4_locations_if([[ ]b4_yyerror_range[[0] = yylsp[1-yylen];
1538 ]])[ /* Do not reclaim the symbols of the rule which action triggered
1539 this YYERROR. */
1540 YYPOPSTACK (yylen);
1541 yylen = 0;
1542 YY_STACK_PRINT (yyss, yyssp);
1543 yystate = *yyssp;
1544 goto yyerrlab1;
1545
1546
1547 /*-------------------------------------------------------------.
1548 | yyerrlab1 -- common code for both syntax error and YYERROR. |
1549 `-------------------------------------------------------------*/
1550 yyerrlab1:
1551 yyerrstatus = 3; /* Each real token shifted decrements this. */
1552
1553 for (;;)
1554 {
1555 yyn = yypact[yystate];
1556 if (yyn != YYPACT_NINF)
1557 {
1558 yyn += YYTERROR;
1559 if (0 <= yyn && yyn <= YYLAST && yycheck[yyn] == YYTERROR)
1560 {
1561 yyn = yytable[yyn];
1562 if (0 < yyn)
1563 break;
1564 }
1565 }
1566
1567 /* Pop the current state because it cannot handle the error token. */
1568 if (yyssp == yyss)
1569 YYABORT;
1570
1571 ]b4_locations_if([[ ]b4_yyerror_range[[0] = *yylsp;]])[
1572 yydestruct ("Error: popping",
1573 yystos[yystate], yyvsp]b4_locations_if([, yylsp])[]b4_user_args[);
1574 YYPOPSTACK (1);
1575 yystate = *yyssp;
1576 YY_STACK_PRINT (yyss, yyssp);
1577 }
1578
1579 *++yyvsp = yylval;
1580 ]b4_locations_if([[
1581 ]b4_yyerror_range[[1] = yylloc;
1582 /* Using YYLLOC is tempting, but would change the location of
1583 the lookahead. YYLOC is available though. */
1584 YYLLOC_DEFAULT (yyloc, (]b4_yyerror_range[- 1), 2);
1585 *++yylsp = yyloc;]])[
1586
1587 /* Shift the error token. */
1588 YY_SYMBOL_PRINT ("Shifting", yystos[yyn], yyvsp, yylsp);
1589
1590 yystate = yyn;
1591 goto yynewstate;
1592
1593
1594 /*-------------------------------------.
1595 | yyacceptlab -- YYACCEPT comes here. |
1596 `-------------------------------------*/
1597 yyacceptlab:
1598 yyresult = 0;
1599 goto yyreturn;
1600
1601 /*-----------------------------------.
1602 | yyabortlab -- YYABORT comes here. |
1603 `-----------------------------------*/
1604 yyabortlab:
1605 yyresult = 1;
1606 goto yyreturn;
1607
1608 #ifndef yyoverflow
1609 /*-------------------------------------------------.
1610 | yyexhaustedlab -- memory exhaustion comes here. |
1611 `-------------------------------------------------*/
1612 yyexhaustedlab:
1613 yyerror (]b4_yyerror_args[YY_("memory exhausted"));
1614 yyresult = 2;
1615 /* Fall through. */
1616 #endif
1617
1618 yyreturn:
1619 if (yychar != YYEMPTY)
1620 yydestruct ("Cleanup: discarding lookahead",
1621 yytoken, &yylval]b4_locations_if([, &yylloc])[]b4_user_args[);
1622 /* Do not reclaim the symbols of the rule which action triggered
1623 this YYABORT or YYACCEPT. */
1624 YYPOPSTACK (yylen);
1625 YY_STACK_PRINT (yyss, yyssp);
1626 while (yyssp != yyss)
1627 {
1628 yydestruct ("Cleanup: popping",
1629 yystos[*yyssp], yyvsp]b4_locations_if([, yylsp])[]b4_user_args[);
1630 YYPOPSTACK (1);
1631 }
1632 #ifndef yyoverflow
1633 if (yyss != ]b4_yyssa[)
1634 YYSTACK_FREE (yyss);
1635 #endif
1636 ]b4_push_if([yypushreturn:])[
1637 #if YYERROR_VERBOSE
1638 if (yymsg != yymsgbuf)
1639 YYSTACK_FREE (yymsg);
1640 #endif
1641 ]b4_push_if([yyps->yyresult = YYID (yyresult);])[
1642 /* Make sure YYID is used. */
1643 return YYID (yyresult);
1644 ]}
1645
1646 b4_epilogue
1647 b4_defines_if(
1648 [@output b4_spec_defines_file
1649 b4_copyright([Skeleton interface for Bison's Yacc-like parsers in C],dnl '
1650 [1984, 1989, 1990, 2000, 2001, 2002, 2003, 2004, 2005, 2006])
1651
1652 m4_ifdef([b4_requires],
1653 [[/* Copy the %requires blocks. */
1654 ]b4_user_requires])[]dnl
1655
1656 b4_token_enums_defines(b4_tokens)
1657
1658 [#if ! defined YYSTYPE && ! defined YYSTYPE_IS_DECLARED
1659 ]m4_ifdef([b4_stype],
1660 [[typedef union ]b4_union_name[
1661 ]b4_user_stype[
1662 YYSTYPE;
1663 # define YYSTYPE_IS_TRIVIAL 1]],
1664 [m4_if(b4_tag_seen_flag, 0,
1665 [[typedef int YYSTYPE;
1666 # define YYSTYPE_IS_TRIVIAL 1]])])[
1667 # define yystype YYSTYPE /* obsolescent; will be withdrawn */
1668 # define YYSTYPE_IS_DECLARED 1
1669 #endif
1670
1671 ]b4_pure_if([],
1672 [extern YYSTYPE b4_prefix[]lval;])
1673
1674 b4_locations_if(
1675 [#if ! defined YYLTYPE && ! defined YYLTYPE_IS_DECLARED
1676 typedef struct YYLTYPE
1677 {
1678 int first_line;
1679 int first_column;
1680 int last_line;
1681 int last_column;
1682 } YYLTYPE;
1683 # define yyltype YYLTYPE /* obsolescent; will be withdrawn */
1684 # define YYLTYPE_IS_DECLARED 1
1685 # define YYLTYPE_IS_TRIVIAL 1
1686 #endif
1687
1688 ]b4_pure_if([],
1689 [extern YYLTYPE b4_prefix[]lloc;])
1690 )dnl b4_locations_if
1691
1692 ]b4_push_if([struct ]b4_prefix[pstate;
1693 ]b4_c_function_decl([]b4_prefix[pstate_new], [struct ]b4_prefix[pstate *],
1694 [[void], []])[
1695 ]b4_c_function_decl([]b4_prefix[pstate_delete], [void],
1696 [[struct ]b4_prefix[pstate *yyps],[yyps]])[
1697 ]b4_c_function_decl([]b4_prefix[push_parse], [int],
1698 [[struct ]b4_prefix[pstate *]b4_prefix[pstate], []b4_prefix[pstate]],
1699 [[int yynchar], [yynchar]],
1700 [[YYSTYPE const *yynlval], [yynlval]]
1701 b4_locations_if([,[[YYLTYPE const *yynlloc], [yynlloc]]]))[
1702 enum { YYPUSH_MORE = 4 };])[
1703
1704 m4_ifdef([b4_provides],
1705 [[/* Copy the %provides blocks. */
1706 ]b4_user_provides])[]
1707 ])dnl b4_defines_if
bison