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[bison.git] / data / push.c
1 -*- C -*-
2
3 # Yacc compatible skeleton for Bison
4
5 # Copyright (C) 1984, 1989, 1990, 2000, 2001, 2002, 2003, 2004, 2005, 2006,
6 # 2007 Free Software Foundation, Inc.
7
8 # This program is free software: you can redistribute it and/or modify
9 # it under the terms of the GNU General Public License as published by
10 # the Free Software Foundation, either version 3 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, see <http://www.gnu.org/licenses/>.
20
21 # Check the value of %define push_pull.
22 b4_percent_define_default([[push_pull]], [[pull]])
23 b4_percent_define_check_values([[[[push_pull]], [[pull]], [[push]], [[both]]]])
24 b4_define_flag_if([pull]) m4_define([b4_pull_flag], [[1]])
25 b4_define_flag_if([push]) m4_define([b4_push_flag], [[1]])
26 m4_case(b4_percent_define_get([[push_pull]]),
27 [pull], [m4_define([b4_push_flag], [[0]])],
28 [push], [m4_define([b4_pull_flag], [[0]])])
29
30 # Handle BISON_USE_PUSH_FOR_PULL for the test suite. So that push parsing
31 # tests function as written, don't let BISON_USE_PUSH_FOR_PULL modify Bison's
32 # behavior at all when push parsing is already requested.
33 b4_define_flag_if([use_push_for_pull])
34 b4_use_push_for_pull_if([
35 b4_push_if([m4_define([b4_use_push_for_pull_flag], [[0]])],
36 [m4_define([b4_push_flag], [[1]])])])
37
38 m4_include(b4_pkgdatadir/[c.m4])
39
40 ## ---------------- ##
41 ## Default values. ##
42 ## ---------------- ##
43
44 # Stack parameters.
45 m4_define_default([b4_stack_depth_max], [10000])
46 m4_define_default([b4_stack_depth_init], [200])
47
48
49 ## ------------------------ ##
50 ## Pure/impure interfaces. ##
51 ## ------------------------ ##
52
53
54 # b4_yacc_pure_if(IF-TRUE, IF-FALSE)
55 # ----------------------------------
56 # Expand IF-TRUE, if %pure-parser and %parse-param, IF-FALSE otherwise.
57 m4_define([b4_yacc_pure_if],
58 [b4_pure_if([m4_ifset([b4_parse_param],
59 [$1], [$2])],
60 [$2])])
61
62
63 # b4_yyerror_args
64 # ---------------
65 # Arguments passed to yyerror: user args plus yylloc.
66 m4_define([b4_yyerror_args],
67 [b4_yacc_pure_if([b4_locations_if([&yylloc, ])])dnl
68 m4_ifset([b4_parse_param], [b4_c_args(b4_parse_param), ])])
69
70
71 # b4_lex_param
72 # ------------
73 # Accumulate in b4_lex_param all the yylex arguments.
74 # b4_lex_param arrives quoted twice, but we want to keep only one level.
75 m4_define([b4_lex_param],
76 m4_dquote(b4_pure_if([[[[YYSTYPE *]], [[&yylval]]][]dnl
77 b4_locations_if([, [[YYLTYPE *], [&yylloc]]])m4_ifdef([b4_lex_param], [, ])])dnl
78 m4_ifdef([b4_lex_param], b4_lex_param)))
79
80
81 ## ------------ ##
82 ## Data Types. ##
83 ## ------------ ##
84
85 # b4_int_type(MIN, MAX)
86 # ---------------------
87 # Return the smallest int type able to handle numbers ranging from
88 # MIN to MAX (included). Overwrite the version from c.m4, which
89 # uses only C89 types, so that the user can override the shorter
90 # types, and so that pre-C89 compilers are handled correctly.
91 m4_define([b4_int_type],
92 [m4_if(b4_ints_in($@, [0], [255]), [1], [yytype_uint8],
93 b4_ints_in($@, [-128], [127]), [1], [yytype_int8],
94
95 b4_ints_in($@, [0], [65535]), [1], [yytype_uint16],
96 b4_ints_in($@, [-32768], [32767]), [1], [yytype_int16],
97
98 m4_eval([0 <= $1]), [1], [unsigned int],
99
100 [int])])
101
102
103 ## ----------------- ##
104 ## Semantic Values. ##
105 ## ----------------- ##
106
107
108 # b4_lhs_value([TYPE])
109 # --------------------
110 # Expansion of $<TYPE>$.
111 m4_define([b4_lhs_value],
112 [(yyval[]m4_ifval([$1], [.$1]))])
113
114
115 # b4_rhs_value(RULE-LENGTH, NUM, [TYPE])
116 # --------------------------------------
117 # Expansion of $<TYPE>NUM, where the current rule has RULE-LENGTH
118 # symbols on RHS.
119 m4_define([b4_rhs_value],
120 [(yyvsp@{($2) - ($1)@}m4_ifval([$3], [.$3]))])
121
122
123
124 ## ----------- ##
125 ## Locations. ##
126 ## ----------- ##
127
128 # b4_lhs_location()
129 # -----------------
130 # Expansion of @$.
131 m4_define([b4_lhs_location],
132 [(yyloc)])
133
134
135 # b4_rhs_location(RULE-LENGTH, NUM)
136 # ---------------------------------
137 # Expansion of @NUM, where the current rule has RULE-LENGTH symbols
138 # on RHS.
139 m4_define([b4_rhs_location],
140 [(yylsp@{($2) - ($1)@})])
141
142
143
144 ## --------------------------------------------------------- ##
145 ## Defining symbol actions, e.g., printers and destructors. ##
146 ## --------------------------------------------------------- ##
147
148 # We do want M4 expansion after # for CPP macros.
149 m4_changecom()
150 m4_divert_push(0)dnl
151 @output(b4_parser_file_name@)
152 b4_copyright([Skeleton implementation for Bison's Yacc-like parsers in C],dnl '
153 [1984, 1989, 1990, 2000, 2001, 2002, 2003, 2004, 2005, 2006])[
154
155 /* C LALR(1) parser skeleton written by Richard Stallman, by
156 simplifying the original so-called "semantic" parser. */
157
158 /* All symbols defined below should begin with yy or YY, to avoid
159 infringing on user name space. This should be done even for local
160 variables, as they might otherwise be expanded by user macros.
161 There are some unavoidable exceptions within include files to
162 define necessary library symbols; they are noted "INFRINGES ON
163 USER NAME SPACE" below. */
164
165 ]b4_identification[
166 /* Push parsers. */
167 #define YYPUSH ]b4_push_flag[
168
169 /* Pull parsers. */
170 #define YYPULL ]b4_pull_flag[
171
172 ]b4_percent_code_get([[top]])[]dnl
173 m4_if(b4_prefix, [yy], [],
174 [[/* Substitute the variable and function names. */
175 ]b4_pull_if([[#define yyparse ]b4_prefix[parse
176 ]])b4_push_if([[#define yypush_parse ]b4_prefix[push_parse
177 ]b4_pull_if([[#define yypull_parse ]b4_prefix[pull_parse
178 ]])[#define yypstate_new ]b4_prefix[pstate_new
179 #define yypstate_delete ]b4_prefix[pstate_delete
180 #define yypstate ]b4_prefix[pstate
181 ]])[#define yylex ]b4_prefix[lex
182 #define yyerror ]b4_prefix[error
183 #define yylval ]b4_prefix[lval
184 #define yychar ]b4_prefix[char
185 #define yydebug ]b4_prefix[debug
186 #define yynerrs ]b4_prefix[nerrs
187 ]b4_locations_if([[#define yylloc ]b4_prefix[lloc]])])[
188
189 /* Copy the first part of user declarations. */
190 ]b4_user_pre_prologue[
191
192 /* Enabling traces. */
193 #ifndef YYDEBUG
194 # define YYDEBUG ]b4_debug_flag[
195 #endif
196
197 /* Enabling verbose error messages. */
198 #ifdef YYERROR_VERBOSE
199 # undef YYERROR_VERBOSE
200 # define YYERROR_VERBOSE 1
201 #else
202 # define YYERROR_VERBOSE ]b4_error_verbose_flag[
203 #endif
204
205 /* Enabling the token table. */
206 #ifndef YYTOKEN_TABLE
207 # define YYTOKEN_TABLE ]b4_token_table[
208 #endif
209
210 ]b4_percent_code_get([[requires]])[]dnl
211
212 b4_token_enums_defines(b4_tokens)[
213
214 #if ! defined YYSTYPE && ! defined YYSTYPE_IS_DECLARED
215 ]m4_ifdef([b4_stype],
216 [[typedef union ]b4_union_name[
217 {
218 ]b4_user_stype[
219 } YYSTYPE;
220 # define YYSTYPE_IS_TRIVIAL 1]],
221 [m4_if(b4_tag_seen_flag, 0,
222 [[typedef int YYSTYPE;
223 # define YYSTYPE_IS_TRIVIAL 1]])])[
224 # define yystype YYSTYPE /* obsolescent; will be withdrawn */
225 # define YYSTYPE_IS_DECLARED 1
226 #endif
227
228 ]b4_locations_if([#if ! defined YYLTYPE && ! defined YYLTYPE_IS_DECLARED
229 typedef struct YYLTYPE
230 {
231 int first_line;
232 int first_column;
233 int last_line;
234 int last_column;
235 } YYLTYPE;
236 # define yyltype YYLTYPE /* obsolescent; will be withdrawn */
237 # define YYLTYPE_IS_DECLARED 1
238 # define YYLTYPE_IS_TRIVIAL 1
239 #endif])
240
241 b4_push_if([[#ifndef YYPUSH_DECLS
242 # define YYPUSH_DECLS
243 struct yypstate;
244 typedef struct yypstate yypstate;
245 enum { YYPUSH_MORE = 4 };
246
247 ]b4_pull_if([b4_c_function_decl([[yyparse]], [[int]], b4_parse_param)
248 ])b4_c_function_decl([[yypush_parse]], [[int]],
249 [[[yypstate *yyps]], [[yyps]]]b4_pure_if([,
250 [[[int yypushed_char]], [[yypushed_char]]],
251 [[[YYSTYPE const *yypushed_val]], [[yypushed_val]]]b4_locations_if([,
252 [[[YYLTYPE const *yypushed_loc]], [[yypushed_loc]]]])])m4_ifset([b4_parse_param], [,
253 b4_parse_param]))
254 b4_pull_if([b4_c_function_decl([[yypull_parse]], [[int]],
255 [[[yypstate *yyps]], [[yyps]]]m4_ifset([b4_parse_param], [,
256 b4_parse_param]))])
257 b4_c_function_decl([[yypstate_new]], [[yypstate *]], [[[void]], []])
258 b4_c_function_decl([[yypstate_delete]], [[void]],
259 [[[yypstate *yyps]], [[yyps]]])[
260 #endif
261 ]])
262 b4_percent_code_get([[provides]])[]dnl
263
264 [/* Copy the second part of user declarations. */
265 ]b4_user_post_prologue
266 b4_percent_code_get[]dnl
267
268 [#ifdef short
269 # undef short
270 #endif
271
272 #ifdef YYTYPE_UINT8
273 typedef YYTYPE_UINT8 yytype_uint8;
274 #else
275 typedef unsigned char yytype_uint8;
276 #endif
277
278 #ifdef YYTYPE_INT8
279 typedef YYTYPE_INT8 yytype_int8;
280 #elif ]b4_c_modern[
281 typedef signed char yytype_int8;
282 #else
283 typedef short int yytype_int8;
284 #endif
285
286 #ifdef YYTYPE_UINT16
287 typedef YYTYPE_UINT16 yytype_uint16;
288 #else
289 typedef unsigned short int yytype_uint16;
290 #endif
291
292 #ifdef YYTYPE_INT16
293 typedef YYTYPE_INT16 yytype_int16;
294 #else
295 typedef short int yytype_int16;
296 #endif
297
298 #ifndef YYSIZE_T
299 # ifdef __SIZE_TYPE__
300 # define YYSIZE_T __SIZE_TYPE__
301 # elif defined size_t
302 # define YYSIZE_T size_t
303 # elif ! defined YYSIZE_T && ]b4_c_modern[
304 # include <stddef.h> /* INFRINGES ON USER NAME SPACE */
305 # define YYSIZE_T size_t
306 # else
307 # define YYSIZE_T unsigned int
308 # endif
309 #endif
310
311 #define YYSIZE_MAXIMUM ((YYSIZE_T) -1)
312
313 #ifndef YY_
314 # if YYENABLE_NLS
315 # if ENABLE_NLS
316 # include <libintl.h> /* INFRINGES ON USER NAME SPACE */
317 # define YY_(msgid) dgettext ("bison-runtime", msgid)
318 # endif
319 # endif
320 # ifndef YY_
321 # define YY_(msgid) msgid
322 # endif
323 #endif
324
325 /* Suppress unused-variable warnings by "using" E. */
326 #if ! defined lint || defined __GNUC__
327 # define YYUSE(e) ((void) (e))
328 #else
329 # define YYUSE(e) /* empty */
330 #endif
331
332 /* Identity function, used to suppress warnings about constant conditions. */
333 #ifndef lint
334 # define YYID(n) (n)
335 #else
336 ]b4_c_function_def([YYID], [static int], [[int yyi], [yyi]])[
337 {
338 return yyi;
339 }
340 #endif
341
342 #if ! defined yyoverflow || YYERROR_VERBOSE
343
344 ]b4_push_if([],
345 [[/* The parser invokes alloca or malloc; define the necessary symbols. */
346
347 # ifdef YYSTACK_USE_ALLOCA
348 # if YYSTACK_USE_ALLOCA
349 # ifdef __GNUC__
350 # define YYSTACK_ALLOC __builtin_alloca
351 # elif defined __BUILTIN_VA_ARG_INCR
352 # include <alloca.h> /* INFRINGES ON USER NAME SPACE */
353 # elif defined _AIX
354 # define YYSTACK_ALLOC __alloca
355 # elif defined _MSC_VER
356 # include <malloc.h> /* INFRINGES ON USER NAME SPACE */
357 # define alloca _alloca
358 # else
359 # define YYSTACK_ALLOC alloca
360 # if ! defined _ALLOCA_H && ! defined _STDLIB_H && ]b4_c_modern[
361 # include <stdlib.h> /* INFRINGES ON USER NAME SPACE */
362 # ifndef _STDLIB_H
363 # define _STDLIB_H 1
364 # endif
365 # endif
366 # endif
367 # endif
368 # endif
369
370 ]])dnl
371 [# ifdef YYSTACK_ALLOC
372 /* Pacify GCC's `empty if-body' warning. */
373 # define YYSTACK_FREE(Ptr) do { /* empty */; } while (YYID (0))
374 # ifndef YYSTACK_ALLOC_MAXIMUM
375 /* The OS might guarantee only one guard page at the bottom of the stack,
376 and a page size can be as small as 4096 bytes. So we cannot safely
377 invoke alloca (N) if N exceeds 4096. Use a slightly smaller number
378 to allow for a few compiler-allocated temporary stack slots. */
379 # define YYSTACK_ALLOC_MAXIMUM 4032 /* reasonable circa 2006 */
380 # endif
381 # else
382 # define YYSTACK_ALLOC YYMALLOC
383 # define YYSTACK_FREE YYFREE
384 # ifndef YYSTACK_ALLOC_MAXIMUM
385 # define YYSTACK_ALLOC_MAXIMUM YYSIZE_MAXIMUM
386 # endif
387 # if (defined __cplusplus && ! defined _STDLIB_H \
388 && ! ((defined YYMALLOC || defined malloc) \
389 && (defined YYFREE || defined free)))
390 # include <stdlib.h> /* INFRINGES ON USER NAME SPACE */
391 # ifndef _STDLIB_H
392 # define _STDLIB_H 1
393 # endif
394 # endif
395 # ifndef YYMALLOC
396 # define YYMALLOC malloc
397 # if ! defined malloc && ! defined _STDLIB_H && ]b4_c_modern[
398 void *malloc (YYSIZE_T); /* INFRINGES ON USER NAME SPACE */
399 # endif
400 # endif
401 # ifndef YYFREE
402 # define YYFREE free
403 # if ! defined free && ! defined _STDLIB_H && ]b4_c_modern[
404 void free (void *); /* INFRINGES ON USER NAME SPACE */
405 # endif
406 # endif
407 # endif
408 #endif /* ! defined yyoverflow || YYERROR_VERBOSE */
409
410
411 #if (! defined yyoverflow \
412 && (! defined __cplusplus \
413 || (]b4_locations_if([[defined YYLTYPE_IS_TRIVIAL && YYLTYPE_IS_TRIVIAL \
414 && ]])[defined YYSTYPE_IS_TRIVIAL && YYSTYPE_IS_TRIVIAL)))
415
416 /* A type that is properly aligned for any stack member. */
417 union yyalloc
418 {
419 yytype_int16 yyss_alloc;
420 YYSTYPE yyvs_alloc;
421 ]b4_locations_if([ YYLTYPE yyls_alloc;
422 ])dnl
423 [};
424
425 /* The size of the maximum gap between one aligned stack and the next. */
426 # define YYSTACK_GAP_MAXIMUM (sizeof (union yyalloc) - 1)
427
428 /* The size of an array large to enough to hold all stacks, each with
429 N elements. */
430 ]b4_locations_if(
431 [# define YYSTACK_BYTES(N) \
432 ((N) * (sizeof (yytype_int16) + sizeof (YYSTYPE) + sizeof (YYLTYPE)) \
433 + 2 * YYSTACK_GAP_MAXIMUM)],
434 [# define YYSTACK_BYTES(N) \
435 ((N) * (sizeof (yytype_int16) + sizeof (YYSTYPE)) \
436 + YYSTACK_GAP_MAXIMUM)])[
437
438 /* Copy COUNT objects from FROM to TO. The source and destination do
439 not overlap. */
440 # ifndef YYCOPY
441 # if defined __GNUC__ && 1 < __GNUC__
442 # define YYCOPY(To, From, Count) \
443 __builtin_memcpy (To, From, (Count) * sizeof (*(From)))
444 # else
445 # define YYCOPY(To, From, Count) \
446 do \
447 { \
448 YYSIZE_T yyi; \
449 for (yyi = 0; yyi < (Count); yyi++) \
450 (To)[yyi] = (From)[yyi]; \
451 } \
452 while (YYID (0))
453 # endif
454 # endif
455
456 /* Relocate STACK from its old location to the new one. The
457 local variables YYSIZE and YYSTACKSIZE give the old and new number of
458 elements in the stack, and YYPTR gives the new location of the
459 stack. Advance YYPTR to a properly aligned location for the next
460 stack. */
461 # define YYSTACK_RELOCATE(Stack_alloc, Stack) \
462 do \
463 { \
464 YYSIZE_T yynewbytes; \
465 YYCOPY (&yyptr->Stack_alloc, Stack, yysize); \
466 Stack = &yyptr->Stack_alloc; \
467 yynewbytes = yystacksize * sizeof (*Stack) + YYSTACK_GAP_MAXIMUM; \
468 yyptr += yynewbytes / sizeof (*yyptr); \
469 } \
470 while (YYID (0))
471
472 #endif
473
474 /* YYFINAL -- State number of the termination state. */
475 #define YYFINAL ]b4_final_state_number[
476 /* YYLAST -- Last index in YYTABLE. */
477 #define YYLAST ]b4_last[
478
479 /* YYNTOKENS -- Number of terminals. */
480 #define YYNTOKENS ]b4_tokens_number[
481 /* YYNNTS -- Number of nonterminals. */
482 #define YYNNTS ]b4_nterms_number[
483 /* YYNRULES -- Number of rules. */
484 #define YYNRULES ]b4_rules_number[
485 /* YYNRULES -- Number of states. */
486 #define YYNSTATES ]b4_states_number[
487
488 /* YYTRANSLATE(YYLEX) -- Bison symbol number corresponding to YYLEX. */
489 #define YYUNDEFTOK ]b4_undef_token_number[
490 #define YYMAXUTOK ]b4_user_token_number_max[
491
492 #define YYTRANSLATE(YYX) \
493 ((unsigned int) (YYX) <= YYMAXUTOK ? yytranslate[YYX] : YYUNDEFTOK)
494
495 /* YYTRANSLATE[YYLEX] -- Bison symbol number corresponding to YYLEX. */
496 static const ]b4_int_type_for([b4_translate])[ yytranslate[] =
497 {
498 ]b4_translate[
499 };
500
501 #if YYDEBUG
502 /* YYPRHS[YYN] -- Index of the first RHS symbol of rule number YYN in
503 YYRHS. */
504 static const ]b4_int_type_for([b4_prhs])[ yyprhs[] =
505 {
506 ]b4_prhs[
507 };
508
509 /* YYRHS -- A `-1'-separated list of the rules' RHS. */
510 static const ]b4_int_type_for([b4_rhs])[ yyrhs[] =
511 {
512 ]b4_rhs[
513 };
514
515 /* YYRLINE[YYN] -- source line where rule number YYN was defined. */
516 static const ]b4_int_type_for([b4_rline])[ yyrline[] =
517 {
518 ]b4_rline[
519 };
520 #endif
521
522 #if YYDEBUG || YYERROR_VERBOSE || YYTOKEN_TABLE
523 /* YYTNAME[SYMBOL-NUM] -- String name of the symbol SYMBOL-NUM.
524 First, the terminals, then, starting at YYNTOKENS, nonterminals. */
525 static const char *const yytname[] =
526 {
527 ]b4_tname[
528 };
529 #endif
530
531 # ifdef YYPRINT
532 /* YYTOKNUM[YYLEX-NUM] -- Internal token number corresponding to
533 token YYLEX-NUM. */
534 static const ]b4_int_type_for([b4_toknum])[ yytoknum[] =
535 {
536 ]b4_toknum[
537 };
538 # endif
539
540 /* YYR1[YYN] -- Symbol number of symbol that rule YYN derives. */
541 static const ]b4_int_type_for([b4_r1])[ yyr1[] =
542 {
543 ]b4_r1[
544 };
545
546 /* YYR2[YYN] -- Number of symbols composing right hand side of rule YYN. */
547 static const ]b4_int_type_for([b4_r2])[ yyr2[] =
548 {
549 ]b4_r2[
550 };
551
552 /* YYDEFACT[STATE-NAME] -- Default rule to reduce with in state
553 STATE-NUM when YYTABLE doesn't specify something else to do. Zero
554 means the default is an error. */
555 static const ]b4_int_type_for([b4_defact])[ yydefact[] =
556 {
557 ]b4_defact[
558 };
559
560 /* YYDEFGOTO[NTERM-NUM]. */
561 static const ]b4_int_type_for([b4_defgoto])[ yydefgoto[] =
562 {
563 ]b4_defgoto[
564 };
565
566 /* YYPACT[STATE-NUM] -- Index in YYTABLE of the portion describing
567 STATE-NUM. */
568 #define YYPACT_NINF ]b4_pact_ninf[
569 static const ]b4_int_type_for([b4_pact])[ yypact[] =
570 {
571 ]b4_pact[
572 };
573
574 /* YYPGOTO[NTERM-NUM]. */
575 static const ]b4_int_type_for([b4_pgoto])[ yypgoto[] =
576 {
577 ]b4_pgoto[
578 };
579
580 /* YYTABLE[YYPACT[STATE-NUM]]. What to do in state STATE-NUM. If
581 positive, shift that token. If negative, reduce the rule which
582 number is the opposite. If zero, do what YYDEFACT says.
583 If YYTABLE_NINF, syntax error. */
584 #define YYTABLE_NINF ]b4_table_ninf[
585 static const ]b4_int_type_for([b4_table])[ yytable[] =
586 {
587 ]b4_table[
588 };
589
590 static const ]b4_int_type_for([b4_check])[ yycheck[] =
591 {
592 ]b4_check[
593 };
594
595 /* YYSTOS[STATE-NUM] -- The (internal number of the) accessing
596 symbol of state STATE-NUM. */
597 static const ]b4_int_type_for([b4_stos])[ yystos[] =
598 {
599 ]b4_stos[
600 };
601
602 #define yyerrok (yyerrstatus = 0)
603 #define yyclearin (yychar = YYEMPTY)
604 #define YYEMPTY (-2)
605 #define YYEOF 0
606
607 #define YYACCEPT goto yyacceptlab
608 #define YYABORT goto yyabortlab
609 #define YYERROR goto yyerrorlab
610
611
612 /* Like YYERROR except do call yyerror. This remains here temporarily
613 to ease the transition to the new meaning of YYERROR, for GCC.
614 Once GCC version 2 has supplanted version 1, this can go. */
615
616 #define YYFAIL goto yyerrlab
617
618 #define YYRECOVERING() (!!yyerrstatus)
619
620 #define YYBACKUP(Token, Value) \
621 do \
622 if (yychar == YYEMPTY && yylen == 1) \
623 { \
624 yychar = (Token); \
625 yylval = (Value); \
626 yytoken = YYTRANSLATE (yychar); \
627 YYPOPSTACK (1); \
628 goto yybackup; \
629 } \
630 else \
631 { \
632 yyerror (]b4_yyerror_args[YY_("syntax error: cannot back up")); \
633 YYERROR; \
634 } \
635 while (YYID (0))
636
637
638 #define YYTERROR 1
639 #define YYERRCODE 256
640
641
642 /* YYLLOC_DEFAULT -- Set CURRENT to span from RHS[1] to RHS[N].
643 If N is 0, then set CURRENT to the empty location which ends
644 the previous symbol: RHS[0] (always defined). */
645
646 #define YYRHSLOC(Rhs, K) ((Rhs)[K])
647 #ifndef YYLLOC_DEFAULT
648 # define YYLLOC_DEFAULT(Current, Rhs, N) \
649 do \
650 if (YYID (N)) \
651 { \
652 (Current).first_line = YYRHSLOC (Rhs, 1).first_line; \
653 (Current).first_column = YYRHSLOC (Rhs, 1).first_column; \
654 (Current).last_line = YYRHSLOC (Rhs, N).last_line; \
655 (Current).last_column = YYRHSLOC (Rhs, N).last_column; \
656 } \
657 else \
658 { \
659 (Current).first_line = (Current).last_line = \
660 YYRHSLOC (Rhs, 0).last_line; \
661 (Current).first_column = (Current).last_column = \
662 YYRHSLOC (Rhs, 0).last_column; \
663 } \
664 while (YYID (0))
665 #endif
666
667
668 /* YY_LOCATION_PRINT -- Print the location on the stream.
669 This macro was not mandated originally: define only if we know
670 we won't break user code: when these are the locations we know. */
671
672 #ifndef YY_LOCATION_PRINT
673 # if YYLTYPE_IS_TRIVIAL
674 # define YY_LOCATION_PRINT(File, Loc) \
675 fprintf (File, "%d.%d-%d.%d", \
676 (Loc).first_line, (Loc).first_column, \
677 (Loc).last_line, (Loc).last_column)
678 # else
679 # define YY_LOCATION_PRINT(File, Loc) ((void) 0)
680 # endif
681 #endif
682
683
684 /* YYLEX -- calling `yylex' with the right arguments. */
685
686 #ifdef YYLEX_PARAM
687 # define YYLEX yylex (]b4_pure_if([&yylval[]b4_locations_if([, &yylloc]), ])[YYLEX_PARAM)
688 #else
689 # define YYLEX ]b4_c_function_call([yylex], [int], b4_lex_param)[
690 #endif
691
692 /* Enable debugging if requested. */
693 #if YYDEBUG
694
695 # ifndef YYFPRINTF
696 # include <stdio.h> /* INFRINGES ON USER NAME SPACE */
697 # define YYFPRINTF fprintf
698 # endif
699
700 # define YYDPRINTF(Args) \
701 do { \
702 if (yydebug) \
703 YYFPRINTF Args; \
704 } while (YYID (0))
705
706 # define YY_SYMBOL_PRINT(Title, Type, Value, Location) \
707 do { \
708 if (yydebug) \
709 { \
710 YYFPRINTF (stderr, "%s ", Title); \
711 yy_symbol_print (stderr, \
712 Type, Value]b4_locations_if([, Location])[]b4_user_args[); \
713 YYFPRINTF (stderr, "\n"); \
714 } \
715 } while (YYID (0))
716
717 ]b4_yy_symbol_print_generate([b4_c_function_def])[
718
719 /*------------------------------------------------------------------.
720 | yy_stack_print -- Print the state stack from its BOTTOM up to its |
721 | TOP (included). |
722 `------------------------------------------------------------------*/
723
724 ]b4_c_function_def([yy_stack_print], [static void],
725 [[yytype_int16 *yybottom], [yybottom]],
726 [[yytype_int16 *yytop], [yytop]])[
727 {
728 YYFPRINTF (stderr, "Stack now");
729 for (; yybottom <= yytop; yybottom++)
730 {
731 int yybot = *yybottom;
732 YYFPRINTF (stderr, " %d", yybot);
733 }
734 YYFPRINTF (stderr, "\n");
735 }
736
737 # define YY_STACK_PRINT(Bottom, Top) \
738 do { \
739 if (yydebug) \
740 yy_stack_print ((Bottom), (Top)); \
741 } while (YYID (0))
742
743
744 /*------------------------------------------------.
745 | Report that the YYRULE is going to be reduced. |
746 `------------------------------------------------*/
747
748 ]b4_c_function_def([yy_reduce_print], [static void],
749 [[YYSTYPE *yyvsp], [yyvsp]],
750 b4_locations_if([[[YYLTYPE *yylsp], [yylsp]],
751 ])[[int yyrule], [yyrule]]m4_ifset([b4_parse_param], [,
752 b4_parse_param]))[
753 {
754 int yynrhs = yyr2[yyrule];
755 int yyi;
756 unsigned long int yylno = yyrline[yyrule];
757 YYFPRINTF (stderr, "Reducing stack by rule %d (line %lu):\n",
758 yyrule - 1, yylno);
759 /* The symbols being reduced. */
760 for (yyi = 0; yyi < yynrhs; yyi++)
761 {
762 YYFPRINTF (stderr, " $%d = ", yyi + 1);
763 yy_symbol_print (stderr, yyrhs[yyprhs[yyrule] + yyi],
764 &]b4_rhs_value(yynrhs, yyi + 1)[
765 ]b4_locations_if([, &]b4_rhs_location(yynrhs, yyi + 1))[]dnl
766 b4_user_args[);
767 YYFPRINTF (stderr, "\n");
768 }
769 }
770
771 # define YY_REDUCE_PRINT(Rule) \
772 do { \
773 if (yydebug) \
774 yy_reduce_print (yyvsp, ]b4_locations_if([yylsp, ])[Rule]b4_user_args[); \
775 } while (YYID (0))
776
777 /* Nonzero means print parse trace. It is left uninitialized so that
778 multiple parsers can coexist. */
779 int yydebug;
780 #else /* !YYDEBUG */
781 # define YYDPRINTF(Args)
782 # define YY_SYMBOL_PRINT(Title, Type, Value, Location)
783 # define YY_STACK_PRINT(Bottom, Top)
784 # define YY_REDUCE_PRINT(Rule)
785 #endif /* !YYDEBUG */
786
787
788 /* YYINITDEPTH -- initial size of the parser's stacks. */
789 #ifndef YYINITDEPTH
790 # define YYINITDEPTH ]b4_stack_depth_init[
791 #endif
792
793 /* YYMAXDEPTH -- maximum size the stacks can grow to (effective only
794 if the built-in stack extension method is used).
795
796 Do not make this value too large; the results are undefined if
797 YYSTACK_ALLOC_MAXIMUM < YYSTACK_BYTES (YYMAXDEPTH)
798 evaluated with infinite-precision integer arithmetic. */
799
800 #ifndef YYMAXDEPTH
801 # define YYMAXDEPTH ]b4_stack_depth_max[
802 #endif
803
804 \f
805
806 #if YYERROR_VERBOSE
807
808 # ifndef yystrlen
809 # if defined __GLIBC__ && defined _STRING_H
810 # define yystrlen strlen
811 # else
812 /* Return the length of YYSTR. */
813 ]b4_c_function_def([yystrlen], [static YYSIZE_T],
814 [[const char *yystr], [yystr]])[
815 {
816 YYSIZE_T yylen;
817 for (yylen = 0; yystr[yylen]; yylen++)
818 continue;
819 return yylen;
820 }
821 # endif
822 # endif
823
824 # ifndef yystpcpy
825 # if defined __GLIBC__ && defined _STRING_H && defined _GNU_SOURCE
826 # define yystpcpy stpcpy
827 # else
828 /* Copy YYSRC to YYDEST, returning the address of the terminating '\0' in
829 YYDEST. */
830 ]b4_c_function_def([yystpcpy], [static char *],
831 [[char *yydest], [yydest]], [[const char *yysrc], [yysrc]])[
832 {
833 char *yyd = yydest;
834 const char *yys = yysrc;
835
836 while ((*yyd++ = *yys++) != '\0')
837 continue;
838
839 return yyd - 1;
840 }
841 # endif
842 # endif
843
844 # ifndef yytnamerr
845 /* Copy to YYRES the contents of YYSTR after stripping away unnecessary
846 quotes and backslashes, so that it's suitable for yyerror. The
847 heuristic is that double-quoting is unnecessary unless the string
848 contains an apostrophe, a comma, or backslash (other than
849 backslash-backslash). YYSTR is taken from yytname. If YYRES is
850 null, do not copy; instead, return the length of what the result
851 would have been. */
852 static YYSIZE_T
853 yytnamerr (char *yyres, const char *yystr)
854 {
855 if (*yystr == '"')
856 {
857 YYSIZE_T yyn = 0;
858 char const *yyp = yystr;
859
860 for (;;)
861 switch (*++yyp)
862 {
863 case '\'':
864 case ',':
865 goto do_not_strip_quotes;
866
867 case '\\':
868 if (*++yyp != '\\')
869 goto do_not_strip_quotes;
870 /* Fall through. */
871 default:
872 if (yyres)
873 yyres[yyn] = *yyp;
874 yyn++;
875 break;
876
877 case '"':
878 if (yyres)
879 yyres[yyn] = '\0';
880 return yyn;
881 }
882 do_not_strip_quotes: ;
883 }
884
885 if (! yyres)
886 return yystrlen (yystr);
887
888 return yystpcpy (yyres, yystr) - yyres;
889 }
890 # endif
891
892 /* Copy into YYRESULT an error message about the unexpected token
893 YYCHAR while in state YYSTATE. Return the number of bytes copied,
894 including the terminating null byte. If YYRESULT is null, do not
895 copy anything; just return the number of bytes that would be
896 copied. As a special case, return 0 if an ordinary "syntax error"
897 message will do. Return YYSIZE_MAXIMUM if overflow occurs during
898 size calculation. */
899 static YYSIZE_T
900 yysyntax_error (char *yyresult, int yystate, int yychar)
901 {
902 int yyn = yypact[yystate];
903
904 if (! (YYPACT_NINF < yyn && yyn <= YYLAST))
905 return 0;
906 else
907 {
908 int yytype = YYTRANSLATE (yychar);
909 YYSIZE_T yysize0 = yytnamerr (0, yytname[yytype]);
910 YYSIZE_T yysize = yysize0;
911 YYSIZE_T yysize1;
912 int yysize_overflow = 0;
913 enum { YYERROR_VERBOSE_ARGS_MAXIMUM = 5 };
914 char const *yyarg[YYERROR_VERBOSE_ARGS_MAXIMUM];
915 int yyx;
916
917 # if 0
918 /* This is so xgettext sees the translatable formats that are
919 constructed on the fly. */
920 YY_("syntax error, unexpected %s");
921 YY_("syntax error, unexpected %s, expecting %s");
922 YY_("syntax error, unexpected %s, expecting %s or %s");
923 YY_("syntax error, unexpected %s, expecting %s or %s or %s");
924 YY_("syntax error, unexpected %s, expecting %s or %s or %s or %s");
925 # endif
926 char *yyfmt;
927 char const *yyf;
928 static char const yyunexpected[] = "syntax error, unexpected %s";
929 static char const yyexpecting[] = ", expecting %s";
930 static char const yyor[] = " or %s";
931 char yyformat[sizeof yyunexpected
932 + sizeof yyexpecting - 1
933 + ((YYERROR_VERBOSE_ARGS_MAXIMUM - 2)
934 * (sizeof yyor - 1))];
935 char const *yyprefix = yyexpecting;
936
937 /* Start YYX at -YYN if negative to avoid negative indexes in
938 YYCHECK. */
939 int yyxbegin = yyn < 0 ? -yyn : 0;
940
941 /* Stay within bounds of both yycheck and yytname. */
942 int yychecklim = YYLAST - yyn + 1;
943 int yyxend = yychecklim < YYNTOKENS ? yychecklim : YYNTOKENS;
944 int yycount = 1;
945
946 yyarg[0] = yytname[yytype];
947 yyfmt = yystpcpy (yyformat, yyunexpected);
948
949 for (yyx = yyxbegin; yyx < yyxend; ++yyx)
950 if (yycheck[yyx + yyn] == yyx && yyx != YYTERROR)
951 {
952 if (yycount == YYERROR_VERBOSE_ARGS_MAXIMUM)
953 {
954 yycount = 1;
955 yysize = yysize0;
956 yyformat[sizeof yyunexpected - 1] = '\0';
957 break;
958 }
959 yyarg[yycount++] = yytname[yyx];
960 yysize1 = yysize + yytnamerr (0, yytname[yyx]);
961 yysize_overflow |= (yysize1 < yysize);
962 yysize = yysize1;
963 yyfmt = yystpcpy (yyfmt, yyprefix);
964 yyprefix = yyor;
965 }
966
967 yyf = YY_(yyformat);
968 yysize1 = yysize + yystrlen (yyf);
969 yysize_overflow |= (yysize1 < yysize);
970 yysize = yysize1;
971
972 if (yysize_overflow)
973 return YYSIZE_MAXIMUM;
974
975 if (yyresult)
976 {
977 /* Avoid sprintf, as that infringes on the user's name space.
978 Don't have undefined behavior even if the translation
979 produced a string with the wrong number of "%s"s. */
980 char *yyp = yyresult;
981 int yyi = 0;
982 while ((*yyp = *yyf) != '\0')
983 {
984 if (*yyp == '%' && yyf[1] == 's' && yyi < yycount)
985 {
986 yyp += yytnamerr (yyp, yyarg[yyi++]);
987 yyf += 2;
988 }
989 else
990 {
991 yyp++;
992 yyf++;
993 }
994 }
995 }
996 return yysize;
997 }
998 }
999 #endif /* YYERROR_VERBOSE */
1000 \f
1001
1002 ]b4_yydestruct_generate([b4_c_function_def])[
1003
1004 ]b4_push_if([],
1005 [[/* Prevent warnings from -Wmissing-prototypes. */
1006 #ifdef YYPARSE_PARAM
1007 ]b4_c_function_decl([yyparse], [int],
1008 [[void *YYPARSE_PARAM], [YYPARSE_PARAM]])[
1009 #else /* ! YYPARSE_PARAM */
1010 ]b4_c_function_decl([yyparse], [int], b4_parse_param)[
1011 #endif /* ! YYPARSE_PARAM */]])
1012
1013 m4_divert_push([KILL])# ======================== M4 code.
1014 # b4_declare_scanner_communication_variables
1015 # ------------------------------------------
1016 # Declare the variables that are global, or local to YYPARSE if
1017 # pure-parser.
1018 m4_define([b4_declare_scanner_communication_variables],
1019 [[/* The lookahead symbol. */
1020 int yychar;
1021
1022 /* The semantic value of the lookahead symbol. */
1023 YYSTYPE yylval;
1024 ]b4_locations_if([[
1025 /* Location data for the lookahead symbol. */
1026 YYLTYPE yylloc;
1027 ]])b4_pure_if([], [[
1028 /* Number of syntax errors so far. */
1029 int yynerrs;
1030 ]])])
1031
1032 # b4_declare_parser_state_variables
1033 # ---------------------------------
1034 # Declare all the variables that are needed to maintain the parser state
1035 # between calls to yypush_parse.
1036 m4_define([b4_declare_parser_state_variables],
1037 [b4_pure_if([[ /* Number of syntax errors so far. */
1038 int yynerrs;
1039 ]])[
1040 int yystate;
1041 /* Number of tokens to shift before error messages enabled. */
1042 int yyerrstatus;
1043
1044 /* Three stacks and their tools:
1045 `yyss': related to states,
1046 `yyvs': related to semantic values,
1047 `yyls': related to locations.
1048
1049 Refer to the stacks thru separate pointers, to allow yyoverflow
1050 to reallocate them elsewhere. */
1051
1052 /* The state stack. */
1053 yytype_int16 yyssa[YYINITDEPTH];
1054 yytype_int16 *yyss;
1055 yytype_int16 *yyssp;
1056
1057 /* The semantic value stack. */
1058 YYSTYPE yyvsa[YYINITDEPTH];
1059 YYSTYPE *yyvs;
1060 YYSTYPE *yyvsp;
1061 ]b4_locations_if([[
1062 /* The location stack. */
1063 YYLTYPE yylsa[YYINITDEPTH];
1064 YYLTYPE *yyls;
1065 YYLTYPE *yylsp;
1066
1067 /* The locations where the error started and ended. */
1068 YYLTYPE yyerror_range[2];
1069 ]])[
1070 YYSIZE_T yystacksize;
1071 ]])
1072
1073 m4_divert_pop([KILL])dnl# ====================== End of M4 code.
1074
1075 b4_pure_if([], [b4_declare_scanner_communication_variables])
1076
1077 b4_push_if(
1078 [[struct yypstate
1079 {
1080 ]b4_declare_parser_state_variables[
1081 /* Used to determine if this is the first time this instance has
1082 been used. */
1083 int yynew;
1084 };
1085
1086 ]b4_pull_if([b4_c_function_def([[yyparse]], [[int]], b4_parse_param)[
1087 {
1088 return yypull_parse (0]m4_ifset([b4_parse_param],
1089 [[, ]b4_c_args(b4_parse_param)])[);
1090 }]b4_pure_if([], [[
1091
1092 static char yypstate_allocated = 0;]])[
1093
1094 ]b4_c_function_def([[yypull_parse]], [[int]],
1095 [[[yypstate *yyps]], [[yyps]]]m4_ifset([b4_parse_param], [,
1096 b4_parse_param]))[
1097 {
1098 int yystatus;
1099 yypstate *yyps_local;
1100 ]b4_pure_if([[ int yychar;
1101 YYSTYPE yylval;
1102 ]b4_locations_if([[ YYLTYPE yylloc;
1103 ]])])[
1104 if (yyps == 0)
1105 {
1106 yyps_local = yypstate_new ();
1107 if (!yyps_local)
1108 {]b4_pure_if([[
1109 yyerror (]b4_yyerror_args[YY_("memory exhausted"));]], [[
1110 if (!yypstate_allocated)
1111 yyerror (]b4_yyerror_args[YY_("memory exhausted"));]])[
1112 return 2;
1113 }
1114 }
1115 else
1116 yyps_local = yyps;
1117 do {
1118 yychar = YYLEX;
1119 yystatus =
1120 yypush_parse (yyps_local]b4_pure_if([[, yychar, &yylval]b4_locations_if([[, &yylloc]])])m4_ifset([b4_parse_param], [, b4_c_args(b4_parse_param)])[);
1121 } while (yystatus == YYPUSH_MORE);
1122 if (yyps == 0)
1123 yypstate_delete (yyps_local);
1124 return yystatus;
1125 }
1126 ]])[
1127 /* Initialize the parser data structure. */
1128 ]b4_c_function_def([[yypstate_new]], [[yypstate *]])[
1129 {
1130 yypstate *yyps;]b4_pure_if([], [[
1131 if (yypstate_allocated)
1132 {
1133 yyerror (]b4_yyerror_args[YY_("cannot allocate multiple impure push-parser instances"));
1134 return 0;
1135 }]])[
1136 yyps = (yypstate *) malloc (sizeof *yyps);
1137 if (!yyps)
1138 return 0;
1139 yyps->yynew = 1;]b4_pure_if([], [[
1140 yypstate_allocated = 1;]])[
1141 return yyps;
1142 }
1143
1144 ]b4_c_function_def([[yypstate_delete]], [[void]],
1145 [[[yypstate *yyps]], [[yyps]]])[
1146 {
1147 #ifndef yyoverflow
1148 /* If the stack was reallocated but the parse did not complete, then the
1149 stack still needs to be freed. */
1150 if (!yyps->yynew && yyps->yyss != yyps->yyssa)
1151 YYSTACK_FREE (yyps->yyss);
1152 #endif
1153 free (yyps);]b4_pure_if([], [[
1154 yypstate_allocated = 0;]])[
1155 }
1156
1157 ]b4_pure_if([[#define ]b4_prefix[nerrs yyps->]b4_prefix[nerrs
1158 ]])[#define yystate yyps->yystate
1159 #define yyerrstatus yyps->yyerrstatus
1160 #define yyssa yyps->yyssa
1161 #define yyss yyps->yyss
1162 #define yyssp yyps->yyssp
1163 #define yyvsa yyps->yyvsa
1164 #define yyvs yyps->yyvs
1165 #define yyvsp yyps->yyvsp
1166 ]b4_locations_if([[#define yylsa yyps->yylsa
1167 #define yyls yyps->yyls
1168 #define yylsp yyps->yylsp
1169 #define yyerror_range yyps->yyerror_range
1170 ]])[#define yystacksize yyps->yystacksize
1171 ]])[
1172
1173 /*-------------------------.
1174 | yyparse or yypush_parse. |
1175 `-------------------------*/
1176
1177 ]b4_push_if([
1178 b4_c_function_def([[yypush_parse]], [[int]],
1179 [[[yypstate *yyps]], [[yyps]]]b4_pure_if([,
1180 [[[int yypushed_char]], [[yypushed_char]]],
1181 [[[YYSTYPE const *yypushed_val]], [[yypushed_val]]]b4_locations_if([,
1182 [[[YYLTYPE const *yypushed_loc]], [[yypushed_loc]]]])])m4_ifset([b4_parse_param], [,
1183 b4_parse_param]))], [
1184 #ifdef YYPARSE_PARAM
1185 b4_c_function_def([yyparse], [int], [[void *YYPARSE_PARAM], [YYPARSE_PARAM]])
1186 #else /* ! YYPARSE_PARAM */
1187 b4_c_function_def([yyparse], [int], b4_parse_param)
1188 #endif])[
1189 {
1190 ]b4_pure_if([b4_declare_scanner_communication_variables])
1191 b4_push_if([b4_pure_if([], [[ int yypushed_char = yychar;
1192 YYSTYPE yypushed_val = yylval;
1193 ]b4_locations_if([[YYLTYPE yypushed_loc = yylloc;
1194 ]])])],
1195 [b4_declare_parser_state_variables])[
1196 int yyn;
1197 int yyresult;
1198 /* Look-ahead token as an internal (translated) token number. */
1199 int yytoken;
1200 /* The variables used to return semantic value and location from the
1201 action routines. */
1202 YYSTYPE yyval;
1203 ]b4_locations_if([[ YYLTYPE yyloc;
1204 ]])[
1205 #if YYERROR_VERBOSE
1206 /* Buffer for error messages, and its allocated size. */
1207 char yymsgbuf[128];
1208 char *yymsg = yymsgbuf;
1209 YYSIZE_T yymsg_alloc = sizeof yymsgbuf;
1210 #endif
1211
1212 #define YYPOPSTACK(N) (yyvsp -= (N), yyssp -= (N)]b4_locations_if([, yylsp -= (N)])[)
1213
1214 /* The number of symbols on the RHS of the reduced rule.
1215 Keep to zero when no symbol should be popped. */
1216 int yylen = 0;
1217 ]b4_push_if([[
1218 if (!yyps->yynew)
1219 {
1220 yyn = yypact[yystate];
1221 goto yyread_pushed_token;
1222 }
1223 ]])[
1224 yytoken = 0;
1225 yyss = yyssa;
1226 yyvs = yyvsa;
1227 ]b4_locations_if([[ yyls = yylsa;
1228 ]])[
1229 yystacksize = YYINITDEPTH;
1230
1231 YYDPRINTF ((stderr, "Starting parse\n"));
1232
1233 yystate = 0;
1234 yyerrstatus = 0;
1235 yynerrs = 0;
1236 yychar = YYEMPTY; /* Cause a token to be read. */
1237
1238 /* Initialize stack pointers.
1239 Waste one element of value and location stack
1240 so that they stay on the same level as the state stack.
1241 The wasted elements are never initialized. */
1242 yyssp = yyss;
1243 yyvsp = yyvs;
1244 ]b4_locations_if([[ yylsp = yyls;
1245
1246 #if YYLTYPE_IS_TRIVIAL
1247 /* Initialize the default location before parsing starts. */
1248 yylloc.first_line = yylloc.last_line = ]b4_location_initial_line[;
1249 yylloc.first_column = yylloc.last_column = ]b4_location_initial_column[;
1250 #endif
1251 ]])
1252 m4_ifdef([b4_initial_action], [
1253 m4_pushdef([b4_at_dollar], [m4_define([b4_at_dollar_used])yylloc])dnl
1254 m4_pushdef([b4_dollar_dollar], [m4_define([b4_dollar_dollar_used])yylval])dnl
1255 /* User initialization code. */
1256 b4_user_initial_action
1257 m4_popdef([b4_dollar_dollar])dnl
1258 m4_popdef([b4_at_dollar])])dnl
1259 m4_ifdef([b4_dollar_dollar_used],[[ yyvsp[0] = yylval;
1260 ]])dnl
1261 m4_ifdef([b4_at_dollar_used], [[ yylsp[0] = yylloc;
1262 ]])dnl
1263 [
1264 goto yysetstate;
1265
1266 /*------------------------------------------------------------.
1267 | yynewstate -- Push a new state, which is found in yystate. |
1268 `------------------------------------------------------------*/
1269 yynewstate:
1270 /* In all cases, when you get here, the value and location stacks
1271 have just been pushed. So pushing a state here evens the stacks. */
1272 yyssp++;
1273
1274 yysetstate:
1275 *yyssp = yystate;
1276
1277 if (yyss + yystacksize - 1 <= yyssp)
1278 {
1279 /* Get the current used size of the three stacks, in elements. */
1280 YYSIZE_T yysize = yyssp - yyss + 1;
1281
1282 #ifdef yyoverflow
1283 {
1284 /* Give user a chance to reallocate the stack. Use copies of
1285 these so that the &'s don't force the real ones into
1286 memory. */
1287 YYSTYPE *yyvs1 = yyvs;
1288 yytype_int16 *yyss1 = yyss;
1289 ]b4_locations_if([ YYLTYPE *yyls1 = yyls;])[
1290
1291 /* Each stack pointer address is followed by the size of the
1292 data in use in that stack, in bytes. This used to be a
1293 conditional around just the two extra args, but that might
1294 be undefined if yyoverflow is a macro. */
1295 yyoverflow (YY_("memory exhausted"),
1296 &yyss1, yysize * sizeof (*yyssp),
1297 &yyvs1, yysize * sizeof (*yyvsp),
1298 ]b4_locations_if([ &yyls1, yysize * sizeof (*yylsp),])[
1299 &yystacksize);
1300 ]b4_locations_if([ yyls = yyls1;])[
1301 yyss = yyss1;
1302 yyvs = yyvs1;
1303 }
1304 #else /* no yyoverflow */
1305 # ifndef YYSTACK_RELOCATE
1306 goto yyexhaustedlab;
1307 # else
1308 /* Extend the stack our own way. */
1309 if (YYMAXDEPTH <= yystacksize)
1310 goto yyexhaustedlab;
1311 yystacksize *= 2;
1312 if (YYMAXDEPTH < yystacksize)
1313 yystacksize = YYMAXDEPTH;
1314
1315 {
1316 yytype_int16 *yyss1 = yyss;
1317 union yyalloc *yyptr =
1318 (union yyalloc *) YYSTACK_ALLOC (YYSTACK_BYTES (yystacksize));
1319 if (! yyptr)
1320 goto yyexhaustedlab;
1321 YYSTACK_RELOCATE (yyss_alloc, yyss);
1322 YYSTACK_RELOCATE (yyvs_alloc, yyvs);
1323 ]b4_locations_if([ YYSTACK_RELOCATE (yyls_alloc, yyls);])[
1324 # undef YYSTACK_RELOCATE
1325 if (yyss1 != yyssa)
1326 YYSTACK_FREE (yyss1);
1327 }
1328 # endif
1329 #endif /* no yyoverflow */
1330
1331 yyssp = yyss + yysize - 1;
1332 yyvsp = yyvs + yysize - 1;
1333 ]b4_locations_if([ yylsp = yyls + yysize - 1;])[
1334
1335 YYDPRINTF ((stderr, "Stack size increased to %lu\n",
1336 (unsigned long int) yystacksize));
1337
1338 if (yyss + yystacksize - 1 <= yyssp)
1339 YYABORT;
1340 }
1341
1342 YYDPRINTF ((stderr, "Entering state %d\n", yystate));
1343
1344 if (yystate == YYFINAL)
1345 YYACCEPT;
1346
1347 goto yybackup;
1348
1349 /*-----------.
1350 | yybackup. |
1351 `-----------*/
1352 yybackup:
1353
1354 /* Do appropriate processing given the current state. Read a
1355 lookahead token if we need one and don't already have one. */
1356
1357 /* First try to decide what to do without reference to lookahead token. */
1358 yyn = yypact[yystate];
1359 if (yyn == YYPACT_NINF)
1360 goto yydefault;
1361
1362 /* Not known => get a lookahead token if don't already have one. */
1363
1364 /* YYCHAR is either YYEMPTY or YYEOF or a valid lookahead symbol. */
1365 if (yychar == YYEMPTY)
1366 {
1367 ]b4_push_if([[ if (!yyps->yynew)
1368 {
1369 ]b4_use_push_for_pull_if([],
1370 [[ YYDPRINTF ((stderr, "Return for a new token:\n"));
1371 ]])[ yyresult = YYPUSH_MORE;
1372 goto yypushreturn;
1373 }
1374 yyps->yynew = 0;
1375 ]b4_pure_if([], [[
1376 /* Restoring the pushed token is only necessary for the first
1377 yypush_parse invocation since subsequent invocations don't overwrite
1378 it before jumping to yyread_pushed_token. */
1379 yychar = yypushed_char;
1380 yylval = yypushed_val;
1381 ]b4_locations_if([[yylloc = yypushed_loc;
1382 ]])])[
1383 yyread_pushed_token:
1384 ]])[ YYDPRINTF ((stderr, "Reading a token: "));
1385 ]b4_push_if([b4_pure_if([[ yychar = yypushed_char;
1386 if (yypushed_val)
1387 yylval = *yypushed_val;
1388 ]b4_locations_if([[ if (yypushed_loc)
1389 yylloc = *yypushed_loc;
1390 ]])])],
1391 [[ yychar = YYLEX;
1392 ]])[ }
1393
1394 if (yychar <= YYEOF)
1395 {
1396 yychar = yytoken = YYEOF;
1397 YYDPRINTF ((stderr, "Now at end of input.\n"));
1398 }
1399 else
1400 {
1401 yytoken = YYTRANSLATE (yychar);
1402 YY_SYMBOL_PRINT ("Next token is", yytoken, &yylval, &yylloc);
1403 }
1404
1405 /* If the proper action on seeing token YYTOKEN is to reduce or to
1406 detect an error, take that action. */
1407 yyn += yytoken;
1408 if (yyn < 0 || YYLAST < yyn || yycheck[yyn] != yytoken)
1409 goto yydefault;
1410 yyn = yytable[yyn];
1411 if (yyn <= 0)
1412 {
1413 if (yyn == 0 || yyn == YYTABLE_NINF)
1414 goto yyerrlab;
1415 yyn = -yyn;
1416 goto yyreduce;
1417 }
1418
1419 /* Count tokens shifted since error; after three, turn off error
1420 status. */
1421 if (yyerrstatus)
1422 yyerrstatus--;
1423
1424 /* Shift the lookahead token. */
1425 YY_SYMBOL_PRINT ("Shifting", yytoken, &yylval, &yylloc);
1426
1427 /* Discard the shifted token. */
1428 yychar = YYEMPTY;
1429
1430 yystate = yyn;
1431 *++yyvsp = yylval;
1432 ]b4_locations_if([ *++yylsp = yylloc;])[
1433 goto yynewstate;
1434
1435
1436 /*-----------------------------------------------------------.
1437 | yydefault -- do the default action for the current state. |
1438 `-----------------------------------------------------------*/
1439 yydefault:
1440 yyn = yydefact[yystate];
1441 if (yyn == 0)
1442 goto yyerrlab;
1443 goto yyreduce;
1444
1445
1446 /*-----------------------------.
1447 | yyreduce -- Do a reduction. |
1448 `-----------------------------*/
1449 yyreduce:
1450 /* yyn is the number of a rule to reduce with. */
1451 yylen = yyr2[yyn];
1452
1453 /* If YYLEN is nonzero, implement the default value of the action:
1454 `$$ = $1'.
1455
1456 Otherwise, the following line sets YYVAL to garbage.
1457 This behavior is undocumented and Bison
1458 users should not rely upon it. Assigning to YYVAL
1459 unconditionally makes the parser a bit smaller, and it avoids a
1460 GCC warning that YYVAL may be used uninitialized. */
1461 yyval = yyvsp[1-yylen];
1462
1463 ]b4_locations_if(
1464 [[ /* Default location. */
1465 YYLLOC_DEFAULT (yyloc, (yylsp - yylen), yylen);]])[
1466 YY_REDUCE_PRINT (yyn);
1467 switch (yyn)
1468 {
1469 ]b4_user_actions[
1470 default: break;
1471 }
1472 YY_SYMBOL_PRINT ("-> $$ =", yyr1[yyn], &yyval, &yyloc);
1473
1474 YYPOPSTACK (yylen);
1475 yylen = 0;
1476 YY_STACK_PRINT (yyss, yyssp);
1477
1478 *++yyvsp = yyval;
1479 ]b4_locations_if([ *++yylsp = yyloc;])[
1480
1481 /* Now `shift' the result of the reduction. Determine what state
1482 that goes to, based on the state we popped back to and the rule
1483 number reduced by. */
1484
1485 yyn = yyr1[yyn];
1486
1487 yystate = yypgoto[yyn - YYNTOKENS] + *yyssp;
1488 if (0 <= yystate && yystate <= YYLAST && yycheck[yystate] == *yyssp)
1489 yystate = yytable[yystate];
1490 else
1491 yystate = yydefgoto[yyn - YYNTOKENS];
1492
1493 goto yynewstate;
1494
1495
1496 /*------------------------------------.
1497 | yyerrlab -- here on detecting error |
1498 `------------------------------------*/
1499 yyerrlab:
1500 /* If not already recovering from an error, report this error. */
1501 if (!yyerrstatus)
1502 {
1503 ++yynerrs;
1504 #if ! YYERROR_VERBOSE
1505 yyerror (]b4_yyerror_args[YY_("syntax error"));
1506 #else
1507 {
1508 YYSIZE_T yysize = yysyntax_error (0, yystate, yychar);
1509 if (yymsg_alloc < yysize && yymsg_alloc < YYSTACK_ALLOC_MAXIMUM)
1510 {
1511 YYSIZE_T yyalloc = 2 * yysize;
1512 if (! (yysize <= yyalloc && yyalloc <= YYSTACK_ALLOC_MAXIMUM))
1513 yyalloc = YYSTACK_ALLOC_MAXIMUM;
1514 if (yymsg != yymsgbuf)
1515 YYSTACK_FREE (yymsg);
1516 yymsg = (char *) YYSTACK_ALLOC (yyalloc);
1517 if (yymsg)
1518 yymsg_alloc = yyalloc;
1519 else
1520 {
1521 yymsg = yymsgbuf;
1522 yymsg_alloc = sizeof yymsgbuf;
1523 }
1524 }
1525
1526 if (0 < yysize && yysize <= yymsg_alloc)
1527 {
1528 (void) yysyntax_error (yymsg, yystate, yychar);
1529 yyerror (]b4_yyerror_args[yymsg);
1530 }
1531 else
1532 {
1533 yyerror (]b4_yyerror_args[YY_("syntax error"));
1534 if (yysize != 0)
1535 goto yyexhaustedlab;
1536 }
1537 }
1538 #endif
1539 }
1540
1541 ]b4_locations_if([[ yyerror_range[0] = yylloc;]])[
1542
1543 if (yyerrstatus == 3)
1544 {
1545 /* If just tried and failed to reuse lookahead token after an
1546 error, discard it. */
1547
1548 if (yychar <= YYEOF)
1549 {
1550 /* Return failure if at end of input. */
1551 if (yychar == YYEOF)
1552 YYABORT;
1553 }
1554 else
1555 {
1556 yydestruct ("Error: discarding",
1557 yytoken, &yylval]b4_locations_if([, &yylloc])[]b4_user_args[);
1558 yychar = YYEMPTY;
1559 }
1560 }
1561
1562 /* Else will try to reuse lookahead token after shifting the error
1563 token. */
1564 goto yyerrlab1;
1565
1566
1567 /*---------------------------------------------------.
1568 | yyerrorlab -- error raised explicitly by YYERROR. |
1569 `---------------------------------------------------*/
1570 yyerrorlab:
1571
1572 /* Pacify compilers like GCC when the user code never invokes
1573 YYERROR and the label yyerrorlab therefore never appears in user
1574 code. */
1575 if (/*CONSTCOND*/ 0)
1576 goto yyerrorlab;
1577
1578 ]b4_locations_if([[ yyerror_range[0] = yylsp[1-yylen];
1579 ]])[ /* Do not reclaim the symbols of the rule which action triggered
1580 this YYERROR. */
1581 YYPOPSTACK (yylen);
1582 yylen = 0;
1583 YY_STACK_PRINT (yyss, yyssp);
1584 yystate = *yyssp;
1585 goto yyerrlab1;
1586
1587
1588 /*-------------------------------------------------------------.
1589 | yyerrlab1 -- common code for both syntax error and YYERROR. |
1590 `-------------------------------------------------------------*/
1591 yyerrlab1:
1592 yyerrstatus = 3; /* Each real token shifted decrements this. */
1593
1594 for (;;)
1595 {
1596 yyn = yypact[yystate];
1597 if (yyn != YYPACT_NINF)
1598 {
1599 yyn += YYTERROR;
1600 if (0 <= yyn && yyn <= YYLAST && yycheck[yyn] == YYTERROR)
1601 {
1602 yyn = yytable[yyn];
1603 if (0 < yyn)
1604 break;
1605 }
1606 }
1607
1608 /* Pop the current state because it cannot handle the error token. */
1609 if (yyssp == yyss)
1610 YYABORT;
1611
1612 ]b4_locations_if([[ yyerror_range[0] = *yylsp;]])[
1613 yydestruct ("Error: popping",
1614 yystos[yystate], yyvsp]b4_locations_if([, yylsp])[]b4_user_args[);
1615 YYPOPSTACK (1);
1616 yystate = *yyssp;
1617 YY_STACK_PRINT (yyss, yyssp);
1618 }
1619
1620 *++yyvsp = yylval;
1621 ]b4_locations_if([[
1622 yyerror_range[1] = yylloc;
1623 /* Using YYLLOC is tempting, but would change the location of
1624 the lookahead. YYLOC is available though. */
1625 YYLLOC_DEFAULT (yyloc, (yyerror_range - 1), 2);
1626 *++yylsp = yyloc;]])[
1627
1628 /* Shift the error token. */
1629 YY_SYMBOL_PRINT ("Shifting", yystos[yyn], yyvsp, yylsp);
1630
1631 yystate = yyn;
1632 goto yynewstate;
1633
1634
1635 /*-------------------------------------.
1636 | yyacceptlab -- YYACCEPT comes here. |
1637 `-------------------------------------*/
1638 yyacceptlab:
1639 yyresult = 0;
1640 goto yyreturn;
1641
1642 /*-----------------------------------.
1643 | yyabortlab -- YYABORT comes here. |
1644 `-----------------------------------*/
1645 yyabortlab:
1646 yyresult = 1;
1647 goto yyreturn;
1648
1649 #ifndef yyoverflow
1650 /*-------------------------------------------------.
1651 | yyexhaustedlab -- memory exhaustion comes here. |
1652 `-------------------------------------------------*/
1653 yyexhaustedlab:
1654 yyerror (]b4_yyerror_args[YY_("memory exhausted"));
1655 yyresult = 2;
1656 /* Fall through. */
1657 #endif
1658
1659 yyreturn:
1660 if (yychar != YYEMPTY)
1661 yydestruct ("Cleanup: discarding lookahead",
1662 yytoken, &yylval]b4_locations_if([, &yylloc])[]b4_user_args[);
1663 /* Do not reclaim the symbols of the rule which action triggered
1664 this YYABORT or YYACCEPT. */
1665 YYPOPSTACK (yylen);
1666 YY_STACK_PRINT (yyss, yyssp);
1667 while (yyssp != yyss)
1668 {
1669 yydestruct ("Cleanup: popping",
1670 yystos[*yyssp], yyvsp]b4_locations_if([, yylsp])[]b4_user_args[);
1671 YYPOPSTACK (1);
1672 }
1673 #ifndef yyoverflow
1674 if (yyss != yyssa)
1675 YYSTACK_FREE (yyss);
1676 #endif
1677 ]b4_push_if([[ yyps->yynew = 1;
1678
1679 yypushreturn:
1680 ]])[#if YYERROR_VERBOSE
1681 if (yymsg != yymsgbuf)
1682 YYSTACK_FREE (yymsg);
1683 #endif
1684 /* Make sure YYID is used. */
1685 return YYID (yyresult);
1686 }
1687
1688
1689 ]b4_epilogue
1690 b4_defines_if(
1691 [@output(b4_spec_defines_file@)
1692 b4_copyright([Skeleton interface for Bison's Yacc-like parsers in C],dnl '
1693 [1984, 1989, 1990, 2000, 2001, 2002, 2003, 2004, 2005, 2006])
1694
1695 b4_percent_code_get([[requires]])[]dnl
1696
1697 b4_token_enums_defines(b4_tokens)
1698
1699 [#if ! defined YYSTYPE && ! defined YYSTYPE_IS_DECLARED
1700 ]m4_ifdef([b4_stype],
1701 [[typedef union ]b4_union_name[
1702 {
1703 ]b4_user_stype[
1704 } YYSTYPE;
1705 # define YYSTYPE_IS_TRIVIAL 1]],
1706 [m4_if(b4_tag_seen_flag, 0,
1707 [[typedef int YYSTYPE;
1708 # define YYSTYPE_IS_TRIVIAL 1]])])[
1709 # define yystype YYSTYPE /* obsolescent; will be withdrawn */
1710 # define YYSTYPE_IS_DECLARED 1
1711 #endif
1712
1713 ]b4_pure_if([], [[extern YYSTYPE ]b4_prefix[lval;]])
1714
1715 b4_locations_if(
1716 [#if ! defined YYLTYPE && ! defined YYLTYPE_IS_DECLARED
1717 typedef struct YYLTYPE
1718 {
1719 int first_line;
1720 int first_column;
1721 int last_line;
1722 int last_column;
1723 } YYLTYPE;
1724 # define yyltype YYLTYPE /* obsolescent; will be withdrawn */
1725 # define YYLTYPE_IS_DECLARED 1
1726 # define YYLTYPE_IS_TRIVIAL 1
1727 #endif
1728
1729 ]b4_pure_if([], [[extern YYLTYPE ]b4_prefix[lloc;]])
1730 )dnl b4_locations_if
1731
1732 b4_push_if([[#ifndef YYPUSH_DECLS
1733 # define YYPUSH_DECLS
1734 struct ]b4_prefix[pstate;
1735 typedef struct ]b4_prefix[pstate ]b4_prefix[pstate;
1736 enum { YYPUSH_MORE = 4 };
1737 ]b4_pull_if([b4_c_function_decl([b4_prefix[parse]], [[int]], b4_parse_param)
1738 ])b4_c_function_decl([b4_prefix[push_parse]], [[int]],
1739 [[b4_prefix[pstate *yyps]], [[yyps]]]b4_pure_if([,
1740 [[[int yypushed_char]], [[yypushed_char]]],
1741 [[[YYSTYPE const *yypushed_val]], [[yypushed_val]]]b4_locations_if([,
1742 [[[YYLTYPE const *yypushed_loc]], [[yypushed_loc]]]])])m4_ifset([b4_parse_param], [,
1743 b4_parse_param]))
1744 b4_pull_if([b4_c_function_decl([b4_prefix[pull_parse]], [[int]],
1745 [[b4_prefix[pstate *yyps]], [[yyps]]]m4_ifset([b4_parse_param], [,
1746 b4_parse_param]))])
1747 b4_c_function_decl([b4_prefix[pstate_new]], [b4_prefix[pstate *]],
1748 [[[void]], []])
1749 b4_c_function_decl([b4_prefix[pstate_delete]], [[void]],
1750 [[b4_prefix[pstate *yyps]], [[yyps]]])[
1751 #endif
1752 ]])
1753 b4_percent_code_get([[provides]])[]dnl
1754 ])dnl b4_defines_if
1755 m4_divert_pop(0)
bison