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Avoid warnings from gcc -Wundef y.tab.c.
[bison.git] / data / yacc.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, 2008, 2009 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 api.push-pull.
22 b4_percent_define_default([[api.push-pull]], [[pull]])
23 b4_percent_define_check_values([[[[api.push-pull]],
24 [[pull]], [[push]], [[both]]]])
25 b4_define_flag_if([pull]) m4_define([b4_pull_flag], [[1]])
26 b4_define_flag_if([push]) m4_define([b4_push_flag], [[1]])
27 m4_case(b4_percent_define_get([[api.push-pull]]),
28 [pull], [m4_define([b4_push_flag], [[0]])],
29 [push], [m4_define([b4_pull_flag], [[0]])])
30
31 # Handle BISON_USE_PUSH_FOR_PULL for the test suite. So that push parsing
32 # tests function as written, don't let BISON_USE_PUSH_FOR_PULL modify Bison's
33 # behavior at all when push parsing is already requested.
34 b4_define_flag_if([use_push_for_pull])
35 b4_use_push_for_pull_if([
36 b4_push_if([m4_define([b4_use_push_for_pull_flag], [[0]])],
37 [m4_define([b4_push_flag], [[1]])])])
38
39 m4_include(b4_pkgdatadir/[c.m4])
40
41 ## ---------------- ##
42 ## Default values. ##
43 ## ---------------- ##
44
45 # Stack parameters.
46 m4_define_default([b4_stack_depth_max], [10000])
47 m4_define_default([b4_stack_depth_init], [200])
48
49
50 ## ------------------------ ##
51 ## Pure/impure interfaces. ##
52 ## ------------------------ ##
53
54 b4_percent_define_default([[api.pure]], [[false]])
55 b4_define_flag_if([pure])
56 m4_define([b4_pure_flag],
57 [b4_percent_define_flag_if([[api.pure]], [[1]], [[0]])])
58
59 # b4_yacc_pure_if(IF-TRUE, IF-FALSE)
60 # ----------------------------------
61 # Expand IF-TRUE, if %pure-parser and %parse-param, IF-FALSE otherwise.
62 m4_define([b4_yacc_pure_if],
63 [b4_pure_if([m4_ifset([b4_parse_param],
64 [$1], [$2])],
65 [$2])])
66
67
68 # b4_yyerror_args
69 # ---------------
70 # Arguments passed to yyerror: user args plus yylloc.
71 m4_define([b4_yyerror_args],
72 [b4_yacc_pure_if([b4_locations_if([&yylloc, ])])dnl
73 m4_ifset([b4_parse_param], [b4_c_args(b4_parse_param), ])])
74
75
76 # b4_lex_param
77 # ------------
78 # Accumulate in b4_lex_param all the yylex arguments.
79 # b4_lex_param arrives quoted twice, but we want to keep only one level.
80 m4_define([b4_lex_param],
81 m4_dquote(b4_pure_if([[[[YYSTYPE *]], [[&yylval]]][]dnl
82 b4_locations_if([, [[YYLTYPE *], [&yylloc]]])m4_ifdef([b4_lex_param], [, ])])dnl
83 m4_ifdef([b4_lex_param], b4_lex_param)))
84
85
86 ## ------------ ##
87 ## Data Types. ##
88 ## ------------ ##
89
90 # b4_int_type(MIN, MAX)
91 # ---------------------
92 # Return the smallest int type able to handle numbers ranging from
93 # MIN to MAX (included). Overwrite the version from c.m4, which
94 # uses only C89 types, so that the user can override the shorter
95 # types, and so that pre-C89 compilers are handled correctly.
96 m4_define([b4_int_type],
97 [m4_if(b4_ints_in($@, [0], [255]), [1], [yytype_uint8],
98 b4_ints_in($@, [-128], [127]), [1], [yytype_int8],
99
100 b4_ints_in($@, [0], [65535]), [1], [yytype_uint16],
101 b4_ints_in($@, [-32768], [32767]), [1], [yytype_int16],
102
103 m4_eval([0 <= $1]), [1], [unsigned int],
104
105 [int])])
106
107
108 ## ----------------- ##
109 ## Semantic Values. ##
110 ## ----------------- ##
111
112
113 # b4_lhs_value([TYPE])
114 # --------------------
115 # Expansion of $<TYPE>$.
116 m4_define([b4_lhs_value],
117 [(yyval[]m4_ifval([$1], [.$1]))])
118
119
120 # b4_rhs_value(RULE-LENGTH, NUM, [TYPE])
121 # --------------------------------------
122 # Expansion of $<TYPE>NUM, where the current rule has RULE-LENGTH
123 # symbols on RHS.
124 m4_define([b4_rhs_value],
125 [(yyvsp@{($2) - ($1)@}m4_ifval([$3], [.$3]))])
126
127
128
129 ## ----------- ##
130 ## Locations. ##
131 ## ----------- ##
132
133 # b4_lhs_location()
134 # -----------------
135 # Expansion of @$.
136 m4_define([b4_lhs_location],
137 [(yyloc)])
138
139
140 # b4_rhs_location(RULE-LENGTH, NUM)
141 # ---------------------------------
142 # Expansion of @NUM, where the current rule has RULE-LENGTH symbols
143 # on RHS.
144 m4_define([b4_rhs_location],
145 [(yylsp@{($2) - ($1)@})])
146
147
148 ## ------------------ ##
149 ## Parser variables. ##
150 ## ------------------ ##
151
152 # b4_declare_scanner_communication_variables
153 # ------------------------------------------
154 # Declare the variables that are global, or local to YYPARSE if
155 # pure-parser.
156 m4_define([b4_declare_scanner_communication_variables], [[
157 /* The lookahead symbol. */
158 int yychar;
159
160 /* The semantic value of the lookahead symbol. */
161 YYSTYPE yylval;]b4_locations_if([[
162
163 /* Location data for the lookahead symbol. */
164 YYLTYPE yylloc;]])b4_pure_if([], [[
165
166 /* Number of syntax errors so far. */
167 int yynerrs;]])])
168
169
170 # b4_declare_parser_state_variables
171 # ---------------------------------
172 # Declare all the variables that are needed to maintain the parser state
173 # between calls to yypush_parse.
174 m4_define([b4_declare_parser_state_variables], [b4_pure_if([[
175 /* Number of syntax errors so far. */
176 int yynerrs;
177 ]])[
178 int yystate;
179 /* Number of tokens to shift before error messages enabled. */
180 int yyerrstatus;
181
182 /* The stacks and their tools:
183 `yyss': related to states.
184 `yyvs': related to semantic values.]b4_locations_if([[
185 `yyls': related to locations.]])[
186
187 Refer to the stacks thru separate pointers, to allow yyoverflow
188 to reallocate them elsewhere. */
189
190 /* The state stack. */
191 yytype_int16 yyssa[YYINITDEPTH];
192 yytype_int16 *yyss;
193 yytype_int16 *yyssp;
194
195 /* The semantic value stack. */
196 YYSTYPE yyvsa[YYINITDEPTH];
197 YYSTYPE *yyvs;
198 YYSTYPE *yyvsp;]b4_locations_if([[
199
200 /* The location stack. */
201 YYLTYPE yylsa[YYINITDEPTH];
202 YYLTYPE *yyls;
203 YYLTYPE *yylsp;
204
205 /* The locations where the error started and ended. */
206 YYLTYPE yyerror_range[2];]])[
207
208 YYSIZE_T yystacksize;]])
209
210
211 ## --------------------------------------------------------- ##
212 ## Defining symbol actions, e.g., printers and destructors. ##
213 ## --------------------------------------------------------- ##
214
215 # We do want M4 expansion after # for CPP macros.
216 m4_changecom()
217 m4_divert_push(0)dnl
218 @output(b4_parser_file_name@)@
219 b4_copyright([Skeleton implementation for Bison's Yacc-like parsers in C],
220 [1984, 1989, 1990, 2000, 2001, 2002, 2003, 2004, 2005,
221 2006, 2007, 2008, 2009])[
222
223 /* C LALR(1) parser skeleton written by Richard Stallman, by
224 simplifying the original so-called "semantic" parser. */
225
226 /* All symbols defined below should begin with yy or YY, to avoid
227 infringing on user name space. This should be done even for local
228 variables, as they might otherwise be expanded by user macros.
229 There are some unavoidable exceptions within include files to
230 define necessary library symbols; they are noted "INFRINGES ON
231 USER NAME SPACE" below. */
232
233 ]b4_identification
234 b4_percent_code_get([[top]])[]dnl
235 m4_if(b4_prefix, [yy], [],
236 [[/* Substitute the variable and function names. */]b4_pull_if([[
237 #define yyparse ]b4_prefix[parse]])b4_push_if([[
238 #define yypush_parse ]b4_prefix[push_parse]b4_pull_if([[
239 #define yypull_parse ]b4_prefix[pull_parse]])[
240 #define yypstate_new ]b4_prefix[pstate_new
241 #define yypstate_delete ]b4_prefix[pstate_delete
242 #define yypstate ]b4_prefix[pstate]])[
243 #define yylex ]b4_prefix[lex
244 #define yyerror ]b4_prefix[error
245 #define yylval ]b4_prefix[lval
246 #define yychar ]b4_prefix[char
247 #define yydebug ]b4_prefix[debug
248 #define yynerrs ]b4_prefix[nerrs
249 ]b4_locations_if([[#define yylloc ]b4_prefix[lloc]])])[
250
251 /* Copy the first part of user declarations. */
252 ]b4_user_pre_prologue[
253
254 /* Enabling traces. */
255 #ifndef YYDEBUG
256 # define YYDEBUG ]b4_debug_flag[
257 #endif
258
259 /* Enabling verbose error messages. */
260 #ifdef YYERROR_VERBOSE
261 # undef YYERROR_VERBOSE
262 # define YYERROR_VERBOSE 1
263 #else
264 # define YYERROR_VERBOSE ]b4_error_verbose_flag[
265 #endif
266
267 /* Enabling the token table. */
268 #ifndef YYTOKEN_TABLE
269 # define YYTOKEN_TABLE ]b4_token_table[
270 #endif
271
272 ]b4_percent_code_get([[requires]])[]dnl
273
274 b4_token_enums_defines(b4_tokens)[
275
276 #if ! defined YYSTYPE && ! defined YYSTYPE_IS_DECLARED
277 ]m4_ifdef([b4_stype],
278 [[typedef union ]b4_union_name[
279 {
280 ]b4_user_stype[
281 } YYSTYPE;
282 # define YYSTYPE_IS_TRIVIAL 1]],
283 [m4_if(b4_tag_seen_flag, 0,
284 [[typedef int YYSTYPE;
285 # define YYSTYPE_IS_TRIVIAL 1]])])[
286 # define yystype YYSTYPE /* obsolescent; will be withdrawn */
287 # define YYSTYPE_IS_DECLARED 1
288 #endif]b4_locations_if([[
289
290 #if ! defined YYLTYPE && ! defined YYLTYPE_IS_DECLARED
291 typedef struct YYLTYPE
292 {
293 int first_line;
294 int first_column;
295 int last_line;
296 int last_column;
297 } YYLTYPE;
298 # define yyltype YYLTYPE /* obsolescent; will be withdrawn */
299 # define YYLTYPE_IS_DECLARED 1
300 # define YYLTYPE_IS_TRIVIAL 1
301 #endif]])b4_push_if([[
302
303 #ifndef YYPUSH_DECLS
304 # define YYPUSH_DECLS
305 struct yypstate;
306 typedef struct yypstate yypstate;
307 enum { YYPUSH_MORE = 4 };
308
309 ]b4_pull_if([b4_c_function_decl([[yyparse]], [[int]], b4_parse_param)
310 ])b4_c_function_decl([[yypush_parse]], [[int]],
311 [[[yypstate *yyps]], [[yyps]]]b4_pure_if([,
312 [[[int yypushed_char]], [[yypushed_char]]],
313 [[[YYSTYPE const *yypushed_val]], [[yypushed_val]]]b4_locations_if([,
314 [[[YYLTYPE const *yypushed_loc]], [[yypushed_loc]]]])])m4_ifset([b4_parse_param], [,
315 b4_parse_param]))
316 b4_pull_if([b4_c_function_decl([[yypull_parse]], [[int]],
317 [[[yypstate *yyps]], [[yyps]]]m4_ifset([b4_parse_param], [,
318 b4_parse_param]))])
319 b4_c_function_decl([[yypstate_new]], [[yypstate *]], [[[void]], []])
320 b4_c_function_decl([[yypstate_delete]], [[void]],
321 [[[yypstate *yyps]], [[yyps]]])[
322 #endif]])
323
324 b4_percent_code_get([[provides]])[]dnl
325
326 [/* Copy the second part of user declarations. */
327 ]b4_user_post_prologue
328 b4_percent_code_get[]dnl
329
330 [#ifdef short
331 # undef short
332 #endif
333
334 #ifdef YYTYPE_UINT8
335 typedef YYTYPE_UINT8 yytype_uint8;
336 #else
337 typedef unsigned char yytype_uint8;
338 #endif
339
340 #ifdef YYTYPE_INT8
341 typedef YYTYPE_INT8 yytype_int8;
342 #elif ]b4_c_modern[
343 typedef signed char yytype_int8;
344 #else
345 typedef short int yytype_int8;
346 #endif
347
348 #ifdef YYTYPE_UINT16
349 typedef YYTYPE_UINT16 yytype_uint16;
350 #else
351 typedef unsigned short int yytype_uint16;
352 #endif
353
354 #ifdef YYTYPE_INT16
355 typedef YYTYPE_INT16 yytype_int16;
356 #else
357 typedef short int yytype_int16;
358 #endif
359
360 #ifndef YYSIZE_T
361 # ifdef __SIZE_TYPE__
362 # define YYSIZE_T __SIZE_TYPE__
363 # elif defined size_t
364 # define YYSIZE_T size_t
365 # elif ! defined YYSIZE_T && ]b4_c_modern[
366 # include <stddef.h> /* INFRINGES ON USER NAME SPACE */
367 # define YYSIZE_T size_t
368 # else
369 # define YYSIZE_T unsigned int
370 # endif
371 #endif
372
373 #define YYSIZE_MAXIMUM ((YYSIZE_T) -1)
374
375 #ifndef YY_
376 # if defined YYENABLE_NLS && YYENABLE_NLS
377 # if ENABLE_NLS
378 # include <libintl.h> /* INFRINGES ON USER NAME SPACE */
379 # define YY_(msgid) dgettext ("bison-runtime", msgid)
380 # endif
381 # endif
382 # ifndef YY_
383 # define YY_(msgid) msgid
384 # endif
385 #endif
386
387 /* Suppress unused-variable warnings by "using" E. */
388 #if ! defined lint || defined __GNUC__
389 # define YYUSE(e) ((void) (e))
390 #else
391 # define YYUSE(e) /* empty */
392 #endif
393
394 /* Identity function, used to suppress warnings about constant conditions. */
395 #ifndef lint
396 # define YYID(n) (n)
397 #else
398 ]b4_c_function_def([YYID], [static int], [[int yyi], [yyi]])[
399 {
400 return yyi;
401 }
402 #endif
403
404 #if ! defined yyoverflow || YYERROR_VERBOSE
405
406 ]b4_push_if([],
407 [[/* The parser invokes alloca or malloc; define the necessary symbols. */
408
409 # ifdef YYSTACK_USE_ALLOCA
410 # if YYSTACK_USE_ALLOCA
411 # ifdef __GNUC__
412 # define YYSTACK_ALLOC __builtin_alloca
413 # elif defined __BUILTIN_VA_ARG_INCR
414 # include <alloca.h> /* INFRINGES ON USER NAME SPACE */
415 # elif defined _AIX
416 # define YYSTACK_ALLOC __alloca
417 # elif defined _MSC_VER
418 # include <malloc.h> /* INFRINGES ON USER NAME SPACE */
419 # define alloca _alloca
420 # else
421 # define YYSTACK_ALLOC alloca
422 # if ! defined _ALLOCA_H && ! defined _STDLIB_H && ]b4_c_modern[
423 # include <stdlib.h> /* INFRINGES ON USER NAME SPACE */
424 # ifndef _STDLIB_H
425 # define _STDLIB_H 1
426 # endif
427 # endif
428 # endif
429 # endif
430 # endif
431
432 ]])dnl
433 [# ifdef YYSTACK_ALLOC
434 /* Pacify GCC's `empty if-body' warning. */
435 # define YYSTACK_FREE(Ptr) do { /* empty */; } while (YYID (0))
436 # ifndef YYSTACK_ALLOC_MAXIMUM
437 /* The OS might guarantee only one guard page at the bottom of the stack,
438 and a page size can be as small as 4096 bytes. So we cannot safely
439 invoke alloca (N) if N exceeds 4096. Use a slightly smaller number
440 to allow for a few compiler-allocated temporary stack slots. */
441 # define YYSTACK_ALLOC_MAXIMUM 4032 /* reasonable circa 2006 */
442 # endif
443 # else
444 # define YYSTACK_ALLOC YYMALLOC
445 # define YYSTACK_FREE YYFREE
446 # ifndef YYSTACK_ALLOC_MAXIMUM
447 # define YYSTACK_ALLOC_MAXIMUM YYSIZE_MAXIMUM
448 # endif
449 # if (defined __cplusplus && ! defined _STDLIB_H \
450 && ! ((defined YYMALLOC || defined malloc) \
451 && (defined YYFREE || defined free)))
452 # include <stdlib.h> /* INFRINGES ON USER NAME SPACE */
453 # ifndef _STDLIB_H
454 # define _STDLIB_H 1
455 # endif
456 # endif
457 # ifndef YYMALLOC
458 # define YYMALLOC malloc
459 # if ! defined malloc && ! defined _STDLIB_H && ]b4_c_modern[
460 void *malloc (YYSIZE_T); /* INFRINGES ON USER NAME SPACE */
461 # endif
462 # endif
463 # ifndef YYFREE
464 # define YYFREE free
465 # if ! defined free && ! defined _STDLIB_H && ]b4_c_modern[
466 void free (void *); /* INFRINGES ON USER NAME SPACE */
467 # endif
468 # endif
469 # endif
470 #endif /* ! defined yyoverflow || YYERROR_VERBOSE */
471
472
473 #if (! defined yyoverflow \
474 && (! defined __cplusplus \
475 || (]b4_locations_if([[defined YYLTYPE_IS_TRIVIAL && YYLTYPE_IS_TRIVIAL \
476 && ]])[defined YYSTYPE_IS_TRIVIAL && YYSTYPE_IS_TRIVIAL)))
477
478 /* A type that is properly aligned for any stack member. */
479 union yyalloc
480 {
481 yytype_int16 yyss_alloc;
482 YYSTYPE yyvs_alloc;]b4_locations_if([
483 YYLTYPE yyls_alloc;])[
484 };
485
486 /* The size of the maximum gap between one aligned stack and the next. */
487 # define YYSTACK_GAP_MAXIMUM (sizeof (union yyalloc) - 1)
488
489 /* The size of an array large to enough to hold all stacks, each with
490 N elements. */
491 ]b4_locations_if(
492 [# define YYSTACK_BYTES(N) \
493 ((N) * (sizeof (yytype_int16) + sizeof (YYSTYPE) + sizeof (YYLTYPE)) \
494 + 2 * YYSTACK_GAP_MAXIMUM)],
495 [# define YYSTACK_BYTES(N) \
496 ((N) * (sizeof (yytype_int16) + sizeof (YYSTYPE)) \
497 + YYSTACK_GAP_MAXIMUM)])[
498
499 /* Copy COUNT objects from FROM to TO. The source and destination do
500 not overlap. */
501 # ifndef YYCOPY
502 # if defined __GNUC__ && 1 < __GNUC__
503 # define YYCOPY(To, From, Count) \
504 __builtin_memcpy (To, From, (Count) * sizeof (*(From)))
505 # else
506 # define YYCOPY(To, From, Count) \
507 do \
508 { \
509 YYSIZE_T yyi; \
510 for (yyi = 0; yyi < (Count); yyi++) \
511 (To)[yyi] = (From)[yyi]; \
512 } \
513 while (YYID (0))
514 # endif
515 # endif
516
517 /* Relocate STACK from its old location to the new one. The
518 local variables YYSIZE and YYSTACKSIZE give the old and new number of
519 elements in the stack, and YYPTR gives the new location of the
520 stack. Advance YYPTR to a properly aligned location for the next
521 stack. */
522 # define YYSTACK_RELOCATE(Stack_alloc, Stack) \
523 do \
524 { \
525 YYSIZE_T yynewbytes; \
526 YYCOPY (&yyptr->Stack_alloc, Stack, yysize); \
527 Stack = &yyptr->Stack_alloc; \
528 yynewbytes = yystacksize * sizeof (*Stack) + YYSTACK_GAP_MAXIMUM; \
529 yyptr += yynewbytes / sizeof (*yyptr); \
530 } \
531 while (YYID (0))
532
533 #endif
534
535 /* YYFINAL -- State number of the termination state. */
536 #define YYFINAL ]b4_final_state_number[
537 /* YYLAST -- Last index in YYTABLE. */
538 #define YYLAST ]b4_last[
539
540 /* YYNTOKENS -- Number of terminals. */
541 #define YYNTOKENS ]b4_tokens_number[
542 /* YYNNTS -- Number of nonterminals. */
543 #define YYNNTS ]b4_nterms_number[
544 /* YYNRULES -- Number of rules. */
545 #define YYNRULES ]b4_rules_number[
546 /* YYNRULES -- Number of states. */
547 #define YYNSTATES ]b4_states_number[
548
549 /* YYTRANSLATE(YYLEX) -- Bison symbol number corresponding to YYLEX. */
550 #define YYUNDEFTOK ]b4_undef_token_number[
551 #define YYMAXUTOK ]b4_user_token_number_max[
552
553 #define YYTRANSLATE(YYX) \
554 ((unsigned int) (YYX) <= YYMAXUTOK ? yytranslate[YYX] : YYUNDEFTOK)
555
556 /* YYTRANSLATE[YYLEX] -- Bison symbol number corresponding to YYLEX. */
557 static const ]b4_int_type_for([b4_translate])[ yytranslate[] =
558 {
559 ]b4_translate[
560 };
561
562 #if YYDEBUG
563 /* YYPRHS[YYN] -- Index of the first RHS symbol of rule number YYN in
564 YYRHS. */
565 static const ]b4_int_type_for([b4_prhs])[ yyprhs[] =
566 {
567 ]b4_prhs[
568 };
569
570 /* YYRHS -- A `-1'-separated list of the rules' RHS. */
571 static const ]b4_int_type_for([b4_rhs])[ yyrhs[] =
572 {
573 ]b4_rhs[
574 };
575
576 /* YYRLINE[YYN] -- source line where rule number YYN was defined. */
577 static const ]b4_int_type_for([b4_rline])[ yyrline[] =
578 {
579 ]b4_rline[
580 };
581 #endif
582
583 #if YYDEBUG || YYERROR_VERBOSE || YYTOKEN_TABLE
584 /* YYTNAME[SYMBOL-NUM] -- String name of the symbol SYMBOL-NUM.
585 First, the terminals, then, starting at YYNTOKENS, nonterminals. */
586 static const char *const yytname[] =
587 {
588 ]b4_tname[
589 };
590 #endif
591
592 # ifdef YYPRINT
593 /* YYTOKNUM[YYLEX-NUM] -- Internal token number corresponding to
594 token YYLEX-NUM. */
595 static const ]b4_int_type_for([b4_toknum])[ yytoknum[] =
596 {
597 ]b4_toknum[
598 };
599 # endif
600
601 /* YYR1[YYN] -- Symbol number of symbol that rule YYN derives. */
602 static const ]b4_int_type_for([b4_r1])[ yyr1[] =
603 {
604 ]b4_r1[
605 };
606
607 /* YYR2[YYN] -- Number of symbols composing right hand side of rule YYN. */
608 static const ]b4_int_type_for([b4_r2])[ yyr2[] =
609 {
610 ]b4_r2[
611 };
612
613 /* YYDEFACT[STATE-NAME] -- Default reduction number in state STATE-NUM.
614 Performed when YYTABLE doesn't specify something else to do. Zero
615 means the default is an error. */
616 static const ]b4_int_type_for([b4_defact])[ yydefact[] =
617 {
618 ]b4_defact[
619 };
620
621 /* YYDEFGOTO[NTERM-NUM]. */
622 static const ]b4_int_type_for([b4_defgoto])[ yydefgoto[] =
623 {
624 ]b4_defgoto[
625 };
626
627 /* YYPACT[STATE-NUM] -- Index in YYTABLE of the portion describing
628 STATE-NUM. */
629 #define YYPACT_NINF ]b4_pact_ninf[
630 static const ]b4_int_type_for([b4_pact])[ yypact[] =
631 {
632 ]b4_pact[
633 };
634
635 /* YYPGOTO[NTERM-NUM]. */
636 static const ]b4_int_type_for([b4_pgoto])[ yypgoto[] =
637 {
638 ]b4_pgoto[
639 };
640
641 /* YYTABLE[YYPACT[STATE-NUM]]. What to do in state STATE-NUM. If
642 positive, shift that token. If negative, reduce the rule which
643 number is the opposite. If YYTABLE_NINF, syntax error. */
644 #define YYTABLE_NINF ]b4_table_ninf[
645 static const ]b4_int_type_for([b4_table])[ yytable[] =
646 {
647 ]b4_table[
648 };
649
650 #define yypact_value_is_default(yystate) \
651 ]b4_table_value_equals([[pact]], [[yystate]], [b4_pact_ninf])[
652
653 #define yytable_value_is_error(yytable_value) \
654 ]b4_table_value_equals([[table]], [[yytable_value]], [b4_table_ninf])[
655
656 static const ]b4_int_type_for([b4_check])[ yycheck[] =
657 {
658 ]b4_check[
659 };
660
661 /* YYSTOS[STATE-NUM] -- The (internal number of the) accessing
662 symbol of state STATE-NUM. */
663 static const ]b4_int_type_for([b4_stos])[ yystos[] =
664 {
665 ]b4_stos[
666 };
667
668 #define yyerrok (yyerrstatus = 0)
669 #define yyclearin (yychar = YYEMPTY)
670 #define YYEMPTY (-2)
671 #define YYEOF 0
672
673 #define YYACCEPT goto yyacceptlab
674 #define YYABORT goto yyabortlab
675 #define YYERROR goto yyerrorlab
676
677
678 /* Like YYERROR except do call yyerror. This remains here temporarily
679 to ease the transition to the new meaning of YYERROR, for GCC.
680 Once GCC version 2 has supplanted version 1, this can go. */
681
682 #define YYFAIL goto yyerrlab
683
684 #define YYRECOVERING() (!!yyerrstatus)
685
686 #define YYBACKUP(Token, Value) \
687 do \
688 if (yychar == YYEMPTY && yylen == 1) \
689 { \
690 yychar = (Token); \
691 yylval = (Value); \
692 yytoken = YYTRANSLATE (yychar); \
693 YYPOPSTACK (1); \
694 goto yybackup; \
695 } \
696 else \
697 { \
698 yyerror (]b4_yyerror_args[YY_("syntax error: cannot back up")); \
699 YYERROR; \
700 } \
701 while (YYID (0))
702
703
704 #define YYTERROR 1
705 #define YYERRCODE 256
706
707
708 /* YYLLOC_DEFAULT -- Set CURRENT to span from RHS[1] to RHS[N].
709 If N is 0, then set CURRENT to the empty location which ends
710 the previous symbol: RHS[0] (always defined). */
711
712 #define YYRHSLOC(Rhs, K) ((Rhs)[K])
713 #ifndef YYLLOC_DEFAULT
714 # define YYLLOC_DEFAULT(Current, Rhs, N) \
715 do \
716 if (YYID (N)) \
717 { \
718 (Current).first_line = YYRHSLOC (Rhs, 1).first_line; \
719 (Current).first_column = YYRHSLOC (Rhs, 1).first_column; \
720 (Current).last_line = YYRHSLOC (Rhs, N).last_line; \
721 (Current).last_column = YYRHSLOC (Rhs, N).last_column; \
722 } \
723 else \
724 { \
725 (Current).first_line = (Current).last_line = \
726 YYRHSLOC (Rhs, 0).last_line; \
727 (Current).first_column = (Current).last_column = \
728 YYRHSLOC (Rhs, 0).last_column; \
729 } \
730 while (YYID (0))
731 #endif
732
733
734 /* YY_LOCATION_PRINT -- Print the location on the stream.
735 This macro was not mandated originally: define only if we know
736 we won't break user code: when these are the locations we know. */
737
738 #ifndef YY_LOCATION_PRINT
739 # if defined YYLTYPE_IS_TRIVIAL && YYLTYPE_IS_TRIVIAL
740 # define YY_LOCATION_PRINT(File, Loc) \
741 fprintf (File, "%d.%d-%d.%d", \
742 (Loc).first_line, (Loc).first_column, \
743 (Loc).last_line, (Loc).last_column)
744 # else
745 # define YY_LOCATION_PRINT(File, Loc) ((void) 0)
746 # endif
747 #endif
748
749
750 /* YYLEX -- calling `yylex' with the right arguments. */
751
752 #ifdef YYLEX_PARAM
753 # define YYLEX yylex (]b4_pure_if([&yylval[]b4_locations_if([, &yylloc]), ])[YYLEX_PARAM)
754 #else
755 # define YYLEX ]b4_c_function_call([yylex], [int], b4_lex_param)[
756 #endif
757
758 /* Enable debugging if requested. */
759 #if YYDEBUG
760
761 # ifndef YYFPRINTF
762 # include <stdio.h> /* INFRINGES ON USER NAME SPACE */
763 # define YYFPRINTF fprintf
764 # endif
765
766 # define YYDPRINTF(Args) \
767 do { \
768 if (yydebug) \
769 YYFPRINTF Args; \
770 } while (YYID (0))
771
772 # define YY_SYMBOL_PRINT(Title, Type, Value, Location) \
773 do { \
774 if (yydebug) \
775 { \
776 YYFPRINTF (stderr, "%s ", Title); \
777 yy_symbol_print (stderr, \
778 Type, Value]b4_locations_if([, Location])[]b4_user_args[); \
779 YYFPRINTF (stderr, "\n"); \
780 } \
781 } while (YYID (0))
782
783 ]b4_yy_symbol_print_generate([b4_c_function_def])[
784
785 /*------------------------------------------------------------------.
786 | yy_stack_print -- Print the state stack from its BOTTOM up to its |
787 | TOP (included). |
788 `------------------------------------------------------------------*/
789
790 ]b4_c_function_def([yy_stack_print], [static void],
791 [[yytype_int16 *yybottom], [yybottom]],
792 [[yytype_int16 *yytop], [yytop]])[
793 {
794 YYFPRINTF (stderr, "Stack now");
795 for (; yybottom <= yytop; yybottom++)
796 {
797 int yybot = *yybottom;
798 YYFPRINTF (stderr, " %d", yybot);
799 }
800 YYFPRINTF (stderr, "\n");
801 }
802
803 # define YY_STACK_PRINT(Bottom, Top) \
804 do { \
805 if (yydebug) \
806 yy_stack_print ((Bottom), (Top)); \
807 } while (YYID (0))
808
809
810 /*------------------------------------------------.
811 | Report that the YYRULE is going to be reduced. |
812 `------------------------------------------------*/
813
814 ]b4_c_function_def([yy_reduce_print], [static void],
815 [[YYSTYPE *yyvsp], [yyvsp]],
816 b4_locations_if([[[YYLTYPE *yylsp], [yylsp]],
817 ])[[int yyrule], [yyrule]]m4_ifset([b4_parse_param], [,
818 b4_parse_param]))[
819 {
820 int yynrhs = yyr2[yyrule];
821 int yyi;
822 unsigned long int yylno = yyrline[yyrule];
823 YYFPRINTF (stderr, "Reducing stack by rule %d (line %lu):\n",
824 yyrule - 1, yylno);
825 /* The symbols being reduced. */
826 for (yyi = 0; yyi < yynrhs; yyi++)
827 {
828 YYFPRINTF (stderr, " $%d = ", yyi + 1);
829 yy_symbol_print (stderr, yyrhs[yyprhs[yyrule] + yyi],
830 &]b4_rhs_value(yynrhs, yyi + 1)[
831 ]b4_locations_if([, &]b4_rhs_location(yynrhs, yyi + 1))[]dnl
832 b4_user_args[);
833 YYFPRINTF (stderr, "\n");
834 }
835 }
836
837 # define YY_REDUCE_PRINT(Rule) \
838 do { \
839 if (yydebug) \
840 yy_reduce_print (yyvsp, ]b4_locations_if([yylsp, ])[Rule]b4_user_args[); \
841 } while (YYID (0))
842
843 /* Nonzero means print parse trace. It is left uninitialized so that
844 multiple parsers can coexist. */
845 int yydebug;
846 #else /* !YYDEBUG */
847 # define YYDPRINTF(Args)
848 # define YY_SYMBOL_PRINT(Title, Type, Value, Location)
849 # define YY_STACK_PRINT(Bottom, Top)
850 # define YY_REDUCE_PRINT(Rule)
851 #endif /* !YYDEBUG */
852
853
854 /* YYINITDEPTH -- initial size of the parser's stacks. */
855 #ifndef YYINITDEPTH
856 # define YYINITDEPTH ]b4_stack_depth_init[
857 #endif
858
859 /* YYMAXDEPTH -- maximum size the stacks can grow to (effective only
860 if the built-in stack extension method is used).
861
862 Do not make this value too large; the results are undefined if
863 YYSTACK_ALLOC_MAXIMUM < YYSTACK_BYTES (YYMAXDEPTH)
864 evaluated with infinite-precision integer arithmetic. */
865
866 #ifndef YYMAXDEPTH
867 # define YYMAXDEPTH ]b4_stack_depth_max[
868 #endif
869
870 \f
871
872 #if YYERROR_VERBOSE
873
874 # ifndef yystrlen
875 # if defined __GLIBC__ && defined _STRING_H
876 # define yystrlen strlen
877 # else
878 /* Return the length of YYSTR. */
879 ]b4_c_function_def([yystrlen], [static YYSIZE_T],
880 [[const char *yystr], [yystr]])[
881 {
882 YYSIZE_T yylen;
883 for (yylen = 0; yystr[yylen]; yylen++)
884 continue;
885 return yylen;
886 }
887 # endif
888 # endif
889
890 # ifndef yystpcpy
891 # if defined __GLIBC__ && defined _STRING_H && defined _GNU_SOURCE
892 # define yystpcpy stpcpy
893 # else
894 /* Copy YYSRC to YYDEST, returning the address of the terminating '\0' in
895 YYDEST. */
896 ]b4_c_function_def([yystpcpy], [static char *],
897 [[char *yydest], [yydest]], [[const char *yysrc], [yysrc]])[
898 {
899 char *yyd = yydest;
900 const char *yys = yysrc;
901
902 while ((*yyd++ = *yys++) != '\0')
903 continue;
904
905 return yyd - 1;
906 }
907 # endif
908 # endif
909
910 # ifndef yytnamerr
911 /* Copy to YYRES the contents of YYSTR after stripping away unnecessary
912 quotes and backslashes, so that it's suitable for yyerror. The
913 heuristic is that double-quoting is unnecessary unless the string
914 contains an apostrophe, a comma, or backslash (other than
915 backslash-backslash). YYSTR is taken from yytname. If YYRES is
916 null, do not copy; instead, return the length of what the result
917 would have been. */
918 static YYSIZE_T
919 yytnamerr (char *yyres, const char *yystr)
920 {
921 if (*yystr == '"')
922 {
923 YYSIZE_T yyn = 0;
924 char const *yyp = yystr;
925
926 for (;;)
927 switch (*++yyp)
928 {
929 case '\'':
930 case ',':
931 goto do_not_strip_quotes;
932
933 case '\\':
934 if (*++yyp != '\\')
935 goto do_not_strip_quotes;
936 /* Fall through. */
937 default:
938 if (yyres)
939 yyres[yyn] = *yyp;
940 yyn++;
941 break;
942
943 case '"':
944 if (yyres)
945 yyres[yyn] = '\0';
946 return yyn;
947 }
948 do_not_strip_quotes: ;
949 }
950
951 if (! yyres)
952 return yystrlen (yystr);
953
954 return yystpcpy (yyres, yystr) - yyres;
955 }
956 # endif
957
958 /* Copy into *YYMSG, which is of size *YYMSG_ALLOC, an error message
959 about the unexpected token YYTOKEN while in state YYSTATE.
960
961 Return 0 if *YYMSG was successfully written. Return 1 if an ordinary
962 "syntax error" message will suffice instead. Return 2 if *YYMSG is
963 not large enough to hold the message. In the last case, also set
964 *YYMSG_ALLOC to either (a) the required number of bytes or (b) zero
965 if the required number of bytes is too large to store. */
966 static int
967 yysyntax_error (YYSIZE_T *yymsg_alloc, char **yymsg,
968 int yystate, int yytoken)
969 {
970 int yyn = yypact[yystate];
971
972 if (! (YYPACT_NINF < yyn && yyn <= YYLAST))
973 return 1;
974 else
975 {
976 YYSIZE_T yysize0 = yytnamerr (0, yytname[yytoken]);
977 YYSIZE_T yysize = yysize0;
978 YYSIZE_T yysize1;
979 enum { YYERROR_VERBOSE_ARGS_MAXIMUM = 5 };
980 /* Internationalized format string. */
981 const char *yyformat = 0;
982 /* Arguments of yyformat. */
983 char const *yyarg[YYERROR_VERBOSE_ARGS_MAXIMUM];
984
985 /* Start YYX at -YYN if negative to avoid negative indexes in
986 YYCHECK. In other words, skip the first -YYN actions for this
987 state because they are default actions. */
988 int yyxbegin = yyn < 0 ? -yyn : 0;
989
990 /* Stay within bounds of both yycheck and yytname. */
991 int yychecklim = YYLAST - yyn + 1;
992 int yyxend = yychecklim < YYNTOKENS ? yychecklim : YYNTOKENS;
993 /* Number of reported tokens (one for the "unexpected", one per
994 "expected"). */
995 int yycount = 0;
996 int yyx;
997
998 yyarg[yycount++] = yytname[yytoken];
999
1000 for (yyx = yyxbegin; yyx < yyxend; ++yyx)
1001 if (yycheck[yyx + yyn] == yyx && yyx != YYTERROR
1002 && !yytable_value_is_error (yytable[yyx + yyn]))
1003 {
1004 if (yycount == YYERROR_VERBOSE_ARGS_MAXIMUM)
1005 {
1006 yycount = 1;
1007 yysize = yysize0;
1008 break;
1009 }
1010 yyarg[yycount++] = yytname[yyx];
1011 yysize1 = yysize + yytnamerr (0, yytname[yyx]);
1012 if (! (yysize <= yysize1
1013 && yysize1 <= YYSTACK_ALLOC_MAXIMUM))
1014 {
1015 /* Overflow. */
1016 *yymsg_alloc = 0;
1017 return 2;
1018 }
1019 yysize = yysize1;
1020 }
1021
1022 switch (yycount)
1023 {
1024 #define YYCASE_(N, S) \
1025 case N: \
1026 yyformat = S; \
1027 break
1028 YYCASE_(1, YY_("syntax error, unexpected %s"));
1029 YYCASE_(2, YY_("syntax error, unexpected %s, expecting %s"));
1030 YYCASE_(3, YY_("syntax error, unexpected %s, expecting %s or %s"));
1031 YYCASE_(4, YY_("syntax error, unexpected %s, expecting %s or %s or %s"));
1032 YYCASE_(5, YY_("syntax error, unexpected %s, expecting %s or %s or %s or %s"));
1033 #undef YYCASE_
1034 }
1035
1036 yysize1 = yysize + yystrlen (yyformat);
1037 if (! (yysize <= yysize1 && yysize1 <= YYSTACK_ALLOC_MAXIMUM))
1038 {
1039 /* Overflow. */
1040 *yymsg_alloc = 0;
1041 return 2;
1042 }
1043 yysize = yysize1;
1044
1045 if (*yymsg_alloc < yysize)
1046 {
1047 *yymsg_alloc = 2 * yysize;
1048 if (! (yysize <= *yymsg_alloc
1049 && *yymsg_alloc <= YYSTACK_ALLOC_MAXIMUM))
1050 *yymsg_alloc = YYSTACK_ALLOC_MAXIMUM;
1051 return 2;
1052 }
1053
1054 /* Avoid sprintf, as that infringes on the user's name space.
1055 Don't have undefined behavior even if the translation
1056 produced a string with the wrong number of "%s"s. */
1057 {
1058 char *yyp = *yymsg;
1059 int yyi = 0;
1060 while ((*yyp = *yyformat) != '\0')
1061 if (*yyp == '%' && yyformat[1] == 's' && yyi < yycount)
1062 {
1063 yyp += yytnamerr (yyp, yyarg[yyi++]);
1064 yyformat += 2;
1065 }
1066 else
1067 {
1068 yyp++;
1069 yyformat++;
1070 }
1071 }
1072 return 0;
1073 }
1074 }
1075 #endif /* YYERROR_VERBOSE */
1076 \f
1077
1078 ]b4_yydestruct_generate([b4_c_function_def])b4_push_if([], [[
1079
1080
1081 /* Prevent warnings from -Wmissing-prototypes. */
1082 #ifdef YYPARSE_PARAM
1083 ]b4_c_function_decl([yyparse], [int],
1084 [[void *YYPARSE_PARAM], [YYPARSE_PARAM]])[
1085 #else /* ! YYPARSE_PARAM */
1086 ]b4_c_function_decl([yyparse], [int], b4_parse_param)[
1087 #endif /* ! YYPARSE_PARAM */]])b4_pure_if([], [
1088
1089 b4_declare_scanner_communication_variables])[]b4_push_if([[
1090
1091
1092 struct yypstate
1093 {]b4_declare_parser_state_variables[
1094 /* Used to determine if this is the first time this instance has
1095 been used. */
1096 int yynew;
1097 };]b4_pure_if([], [[
1098
1099 static char yypstate_allocated = 0;]])b4_pull_if([
1100
1101 b4_c_function_def([[yyparse]], [[int]], b4_parse_param)[
1102 {
1103 return yypull_parse (0]m4_ifset([b4_parse_param],
1104 [[, ]b4_c_args(b4_parse_param)])[);
1105 }
1106
1107 ]b4_c_function_def([[yypull_parse]], [[int]],
1108 [[[yypstate *yyps]], [[yyps]]]m4_ifset([b4_parse_param], [,
1109 b4_parse_param]))[
1110 {
1111 int yystatus;
1112 yypstate *yyps_local;]b4_pure_if([[
1113 int yychar;
1114 YYSTYPE yylval;]b4_locations_if([[
1115 YYLTYPE yylloc;]])])[
1116 if (yyps == 0)
1117 {
1118 yyps_local = yypstate_new ();
1119 if (!yyps_local)
1120 {]b4_pure_if([[
1121 yyerror (]b4_yyerror_args[YY_("memory exhausted"));]], [[
1122 if (!yypstate_allocated)
1123 yyerror (]b4_yyerror_args[YY_("memory exhausted"));]])[
1124 return 2;
1125 }
1126 }
1127 else
1128 yyps_local = yyps;
1129 do {
1130 yychar = YYLEX;
1131 yystatus =
1132 yypush_parse (yyps_local]b4_pure_if([[, yychar, &yylval]b4_locations_if([[, &yylloc]])])m4_ifset([b4_parse_param], [, b4_c_args(b4_parse_param)])[);
1133 } while (yystatus == YYPUSH_MORE);
1134 if (yyps == 0)
1135 yypstate_delete (yyps_local);
1136 return yystatus;
1137 }]])[
1138
1139 /* Initialize the parser data structure. */
1140 ]b4_c_function_def([[yypstate_new]], [[yypstate *]])[
1141 {
1142 yypstate *yyps;]b4_pure_if([], [[
1143 if (yypstate_allocated)
1144 return 0;]])[
1145 yyps = (yypstate *) malloc (sizeof *yyps);
1146 if (!yyps)
1147 return 0;
1148 yyps->yynew = 1;]b4_pure_if([], [[
1149 yypstate_allocated = 1;]])[
1150 return yyps;
1151 }
1152
1153 ]b4_c_function_def([[yypstate_delete]], [[void]],
1154 [[[yypstate *yyps]], [[yyps]]])[
1155 {
1156 #ifndef yyoverflow
1157 /* If the stack was reallocated but the parse did not complete, then the
1158 stack still needs to be freed. */
1159 if (!yyps->yynew && yyps->yyss != yyps->yyssa)
1160 YYSTACK_FREE (yyps->yyss);
1161 #endif
1162 free (yyps);]b4_pure_if([], [[
1163 yypstate_allocated = 0;]])[
1164 }
1165 ]b4_pure_if([[
1166 #define ]b4_prefix[nerrs yyps->]b4_prefix[nerrs]])[
1167 #define yystate yyps->yystate
1168 #define yyerrstatus yyps->yyerrstatus
1169 #define yyssa yyps->yyssa
1170 #define yyss yyps->yyss
1171 #define yyssp yyps->yyssp
1172 #define yyvsa yyps->yyvsa
1173 #define yyvs yyps->yyvs
1174 #define yyvsp yyps->yyvsp]b4_locations_if([[
1175 #define yylsa yyps->yylsa
1176 #define yyls yyps->yyls
1177 #define yylsp yyps->yylsp
1178 #define yyerror_range yyps->yyerror_range]])[
1179 #define yystacksize yyps->yystacksize
1180
1181
1182 /*---------------.
1183 | yypush_parse. |
1184 `---------------*/
1185
1186 ]b4_c_function_def([[yypush_parse]], [[int]],
1187 [[[yypstate *yyps]], [[yyps]]]b4_pure_if([,
1188 [[[int yypushed_char]], [[yypushed_char]]],
1189 [[[YYSTYPE const *yypushed_val]], [[yypushed_val]]]b4_locations_if([,
1190 [[[YYLTYPE const *yypushed_loc]], [[yypushed_loc]]]])])m4_ifset([b4_parse_param], [,
1191 b4_parse_param]))], [[
1192
1193
1194 /*----------.
1195 | yyparse. |
1196 `----------*/
1197
1198 #ifdef YYPARSE_PARAM
1199 ]b4_c_function_def([yyparse], [int],
1200 [[void *YYPARSE_PARAM], [YYPARSE_PARAM]])[
1201 #else /* ! YYPARSE_PARAM */
1202 ]b4_c_function_def([yyparse], [int], b4_parse_param)[
1203 #endif]])[
1204 {]b4_pure_if([b4_declare_scanner_communication_variables
1205 ])b4_push_if([b4_pure_if([], [[
1206 int yypushed_char = yychar;
1207 YYSTYPE yypushed_val = yylval;]b4_locations_if([[
1208 YYLTYPE yypushed_loc = yylloc;]])
1209 ])],
1210 [b4_declare_parser_state_variables
1211 ])[
1212 int yyn;
1213 int yyresult;
1214 /* Lookahead token as an internal (translated) token number. */
1215 int yytoken;
1216 /* The variables used to return semantic value and location from the
1217 action routines. */
1218 YYSTYPE yyval;]b4_locations_if([[
1219 YYLTYPE yyloc;]])[
1220
1221 #if YYERROR_VERBOSE
1222 /* Buffer for error messages, and its allocated size. */
1223 char yymsgbuf[128];
1224 char *yymsg = yymsgbuf;
1225 YYSIZE_T yymsg_alloc = sizeof yymsgbuf;
1226 #endif
1227
1228 #define YYPOPSTACK(N) (yyvsp -= (N), yyssp -= (N)]b4_locations_if([, yylsp -= (N)])[)
1229
1230 /* The number of symbols on the RHS of the reduced rule.
1231 Keep to zero when no symbol should be popped. */
1232 int yylen = 0;]b4_push_if([[
1233
1234 if (!yyps->yynew)
1235 {
1236 yyn = yypact[yystate];
1237 goto yyread_pushed_token;
1238 }]])[
1239
1240 yytoken = 0;
1241 yyss = yyssa;
1242 yyvs = yyvsa;]b4_locations_if([[
1243 yyls = yylsa;]])[
1244 yystacksize = YYINITDEPTH;
1245
1246 YYDPRINTF ((stderr, "Starting parse\n"));
1247
1248 yystate = 0;
1249 yyerrstatus = 0;
1250 yynerrs = 0;
1251 yychar = YYEMPTY; /* Cause a token to be read. */
1252
1253 /* Initialize stack pointers.
1254 Waste one element of value and location stack
1255 so that they stay on the same level as the state stack.
1256 The wasted elements are never initialized. */
1257 yyssp = yyss;
1258 yyvsp = yyvs;]b4_locations_if([[
1259 yylsp = yyls;
1260
1261 #if defined YYLTYPE_IS_TRIVIAL && YYLTYPE_IS_TRIVIAL
1262 /* Initialize the default location before parsing starts. */
1263 yylloc.first_line = yylloc.last_line = ]b4_location_initial_line[;
1264 yylloc.first_column = yylloc.last_column = ]b4_location_initial_column[;
1265 #endif]])
1266 m4_ifdef([b4_initial_action],[
1267 m4_pushdef([b4_at_dollar], [m4_define([b4_at_dollar_used])yylloc])dnl
1268 m4_pushdef([b4_dollar_dollar], [m4_define([b4_dollar_dollar_used])yylval])dnl
1269 /* User initialization code. */
1270 b4_user_initial_action
1271 m4_popdef([b4_dollar_dollar])dnl
1272 m4_popdef([b4_at_dollar])])dnl
1273 m4_ifdef([b4_dollar_dollar_used],[[ yyvsp[0] = yylval;
1274 ]])dnl
1275 m4_ifdef([b4_at_dollar_used], [[ yylsp[0] = yylloc;
1276 ]])[
1277 goto yysetstate;
1278
1279 /*------------------------------------------------------------.
1280 | yynewstate -- Push a new state, which is found in yystate. |
1281 `------------------------------------------------------------*/
1282 yynewstate:
1283 /* In all cases, when you get here, the value and location stacks
1284 have just been pushed. So pushing a state here evens the stacks. */
1285 yyssp++;
1286
1287 yysetstate:
1288 *yyssp = yystate;
1289
1290 if (yyss + yystacksize - 1 <= yyssp)
1291 {
1292 /* Get the current used size of the three stacks, in elements. */
1293 YYSIZE_T yysize = yyssp - yyss + 1;
1294
1295 #ifdef yyoverflow
1296 {
1297 /* Give user a chance to reallocate the stack. Use copies of
1298 these so that the &'s don't force the real ones into
1299 memory. */
1300 YYSTYPE *yyvs1 = yyvs;
1301 yytype_int16 *yyss1 = yyss;]b4_locations_if([
1302 YYLTYPE *yyls1 = yyls;])[
1303
1304 /* Each stack pointer address is followed by the size of the
1305 data in use in that stack, in bytes. This used to be a
1306 conditional around just the two extra args, but that might
1307 be undefined if yyoverflow is a macro. */
1308 yyoverflow (YY_("memory exhausted"),
1309 &yyss1, yysize * sizeof (*yyssp),
1310 &yyvs1, yysize * sizeof (*yyvsp),]b4_locations_if([
1311 &yyls1, yysize * sizeof (*yylsp),])[
1312 &yystacksize);
1313 ]b4_locations_if([
1314 yyls = yyls1;])[
1315 yyss = yyss1;
1316 yyvs = yyvs1;
1317 }
1318 #else /* no yyoverflow */
1319 # ifndef YYSTACK_RELOCATE
1320 goto yyexhaustedlab;
1321 # else
1322 /* Extend the stack our own way. */
1323 if (YYMAXDEPTH <= yystacksize)
1324 goto yyexhaustedlab;
1325 yystacksize *= 2;
1326 if (YYMAXDEPTH < yystacksize)
1327 yystacksize = YYMAXDEPTH;
1328
1329 {
1330 yytype_int16 *yyss1 = yyss;
1331 union yyalloc *yyptr =
1332 (union yyalloc *) YYSTACK_ALLOC (YYSTACK_BYTES (yystacksize));
1333 if (! yyptr)
1334 goto yyexhaustedlab;
1335 YYSTACK_RELOCATE (yyss_alloc, yyss);
1336 YYSTACK_RELOCATE (yyvs_alloc, yyvs);]b4_locations_if([
1337 YYSTACK_RELOCATE (yyls_alloc, yyls);])[
1338 # undef YYSTACK_RELOCATE
1339 if (yyss1 != yyssa)
1340 YYSTACK_FREE (yyss1);
1341 }
1342 # endif
1343 #endif /* no yyoverflow */
1344
1345 yyssp = yyss + yysize - 1;
1346 yyvsp = yyvs + yysize - 1;]b4_locations_if([
1347 yylsp = yyls + yysize - 1;])[
1348
1349 YYDPRINTF ((stderr, "Stack size increased to %lu\n",
1350 (unsigned long int) yystacksize));
1351
1352 if (yyss + yystacksize - 1 <= yyssp)
1353 YYABORT;
1354 }
1355
1356 YYDPRINTF ((stderr, "Entering state %d\n", yystate));
1357
1358 if (yystate == YYFINAL)
1359 YYACCEPT;
1360
1361 goto yybackup;
1362
1363 /*-----------.
1364 | yybackup. |
1365 `-----------*/
1366 yybackup:
1367
1368 /* Do appropriate processing given the current state. Read a
1369 lookahead token if we need one and don't already have one. */
1370
1371 /* First try to decide what to do without reference to lookahead token. */
1372 yyn = yypact[yystate];
1373 if (yypact_value_is_default (yyn))
1374 goto yydefault;
1375
1376 /* Not known => get a lookahead token if don't already have one. */
1377
1378 /* YYCHAR is either YYEMPTY or YYEOF or a valid lookahead symbol. */
1379 if (yychar == YYEMPTY)
1380 {]b4_push_if([[
1381 if (!yyps->yynew)
1382 {]b4_use_push_for_pull_if([], [[
1383 YYDPRINTF ((stderr, "Return for a new token:\n"));]])[
1384 yyresult = YYPUSH_MORE;
1385 goto yypushreturn;
1386 }
1387 yyps->yynew = 0;]b4_pure_if([], [[
1388 /* Restoring the pushed token is only necessary for the first
1389 yypush_parse invocation since subsequent invocations don't overwrite
1390 it before jumping to yyread_pushed_token. */
1391 yychar = yypushed_char;
1392 yylval = yypushed_val;]b4_locations_if([[
1393 yylloc = yypushed_loc;]])])[
1394 yyread_pushed_token:]])[
1395 YYDPRINTF ((stderr, "Reading a token: "));]b4_push_if([b4_pure_if([[
1396 yychar = yypushed_char;
1397 if (yypushed_val)
1398 yylval = *yypushed_val;]b4_locations_if([[
1399 if (yypushed_loc)
1400 yylloc = *yypushed_loc;]])])], [[
1401 yychar = YYLEX;]])[
1402 }
1403
1404 if (yychar <= YYEOF)
1405 {
1406 yychar = yytoken = YYEOF;
1407 YYDPRINTF ((stderr, "Now at end of input.\n"));
1408 }
1409 else
1410 {
1411 yytoken = YYTRANSLATE (yychar);
1412 YY_SYMBOL_PRINT ("Next token is", yytoken, &yylval, &yylloc);
1413 }
1414
1415 /* If the proper action on seeing token YYTOKEN is to reduce or to
1416 detect an error, take that action. */
1417 yyn += yytoken;
1418 if (yyn < 0 || YYLAST < yyn || yycheck[yyn] != yytoken)
1419 goto yydefault;
1420 yyn = yytable[yyn];
1421 if (yyn <= 0)
1422 {
1423 if (yytable_value_is_error (yyn))
1424 goto yyerrlab;
1425 yyn = -yyn;
1426 goto yyreduce;
1427 }
1428
1429 /* Count tokens shifted since error; after three, turn off error
1430 status. */
1431 if (yyerrstatus)
1432 yyerrstatus--;
1433
1434 /* Shift the lookahead token. */
1435 YY_SYMBOL_PRINT ("Shifting", yytoken, &yylval, &yylloc);
1436
1437 /* Discard the shifted token. */
1438 yychar = YYEMPTY;
1439
1440 yystate = yyn;
1441 *++yyvsp = yylval;
1442 ]b4_locations_if([ *++yylsp = yylloc;])[
1443 goto yynewstate;
1444
1445
1446 /*-----------------------------------------------------------.
1447 | yydefault -- do the default action for the current state. |
1448 `-----------------------------------------------------------*/
1449 yydefault:
1450 yyn = yydefact[yystate];
1451 if (yyn == 0)
1452 goto yyerrlab;
1453 goto yyreduce;
1454
1455
1456 /*-----------------------------.
1457 | yyreduce -- Do a reduction. |
1458 `-----------------------------*/
1459 yyreduce:
1460 /* yyn is the number of a rule to reduce with. */
1461 yylen = yyr2[yyn];
1462
1463 /* If YYLEN is nonzero, implement the default value of the action:
1464 `$$ = $1'.
1465
1466 Otherwise, the following line sets YYVAL to garbage.
1467 This behavior is undocumented and Bison
1468 users should not rely upon it. Assigning to YYVAL
1469 unconditionally makes the parser a bit smaller, and it avoids a
1470 GCC warning that YYVAL may be used uninitialized. */
1471 yyval = yyvsp[1-yylen];
1472
1473 ]b4_locations_if(
1474 [[ /* Default location. */
1475 YYLLOC_DEFAULT (yyloc, (yylsp - yylen), yylen);]])[
1476 YY_REDUCE_PRINT (yyn);
1477 switch (yyn)
1478 {
1479 ]b4_user_actions[
1480 default: break;
1481 }
1482 YY_SYMBOL_PRINT ("-> $$ =", yyr1[yyn], &yyval, &yyloc);
1483
1484 YYPOPSTACK (yylen);
1485 yylen = 0;
1486 YY_STACK_PRINT (yyss, yyssp);
1487
1488 *++yyvsp = yyval;]b4_locations_if([
1489 *++yylsp = yyloc;])[
1490
1491 /* Now `shift' the result of the reduction. Determine what state
1492 that goes to, based on the state we popped back to and the rule
1493 number reduced by. */
1494
1495 yyn = yyr1[yyn];
1496
1497 yystate = yypgoto[yyn - YYNTOKENS] + *yyssp;
1498 if (0 <= yystate && yystate <= YYLAST && yycheck[yystate] == *yyssp)
1499 yystate = yytable[yystate];
1500 else
1501 yystate = yydefgoto[yyn - YYNTOKENS];
1502
1503 goto yynewstate;
1504
1505
1506 /*------------------------------------.
1507 | yyerrlab -- here on detecting error |
1508 `------------------------------------*/
1509 yyerrlab:
1510 /* If not already recovering from an error, report this error. */
1511 if (!yyerrstatus)
1512 {
1513 ++yynerrs;
1514 #if ! YYERROR_VERBOSE
1515 yyerror (]b4_yyerror_args[YY_("syntax error"));
1516 #else
1517 while (1)
1518 {
1519 int yysyntax_error_status =
1520 yysyntax_error (&yymsg_alloc, &yymsg, yystate, yytoken);
1521 if (yysyntax_error_status == 2 && 0 < yymsg_alloc)
1522 {
1523 if (yymsg != yymsgbuf)
1524 YYSTACK_FREE (yymsg);
1525 yymsg = (char *) YYSTACK_ALLOC (yymsg_alloc);
1526 if (yymsg)
1527 continue;
1528 yymsg = yymsgbuf;
1529 yymsg_alloc = sizeof yymsgbuf;
1530 }
1531 if (yysyntax_error_status == 0)
1532 yyerror (]b4_yyerror_args[yymsg);
1533 else
1534 yyerror (]b4_yyerror_args[YY_("syntax error"));
1535 if (yysyntax_error_status == 2)
1536 goto yyexhaustedlab;
1537 break;
1538 }
1539 #endif
1540 }
1541
1542 ]b4_locations_if([[ yyerror_range[0] = yylloc;]])[
1543
1544 if (yyerrstatus == 3)
1545 {
1546 /* If just tried and failed to reuse lookahead token after an
1547 error, discard it. */
1548
1549 if (yychar <= YYEOF)
1550 {
1551 /* Return failure if at end of input. */
1552 if (yychar == YYEOF)
1553 YYABORT;
1554 }
1555 else
1556 {
1557 yydestruct ("Error: discarding",
1558 yytoken, &yylval]b4_locations_if([, &yylloc])[]b4_user_args[);
1559 yychar = YYEMPTY;
1560 }
1561 }
1562
1563 /* Else will try to reuse lookahead token after shifting the error
1564 token. */
1565 goto yyerrlab1;
1566
1567
1568 /*---------------------------------------------------.
1569 | yyerrorlab -- error raised explicitly by YYERROR. |
1570 `---------------------------------------------------*/
1571 yyerrorlab:
1572
1573 /* Pacify compilers like GCC when the user code never invokes
1574 YYERROR and the label yyerrorlab therefore never appears in user
1575 code. */
1576 if (/*CONSTCOND*/ 0)
1577 goto yyerrorlab;
1578
1579 ]b4_locations_if([[ yyerror_range[0] = yylsp[1-yylen];
1580 ]])[ /* Do not reclaim the symbols of the rule which action triggered
1581 this YYERROR. */
1582 YYPOPSTACK (yylen);
1583 yylen = 0;
1584 YY_STACK_PRINT (yyss, yyssp);
1585 yystate = *yyssp;
1586 goto yyerrlab1;
1587
1588
1589 /*-------------------------------------------------------------.
1590 | yyerrlab1 -- common code for both syntax error and YYERROR. |
1591 `-------------------------------------------------------------*/
1592 yyerrlab1:
1593 yyerrstatus = 3; /* Each real token shifted decrements this. */
1594
1595 for (;;)
1596 {
1597 yyn = yypact[yystate];
1598 if (!yypact_value_is_default (yyn))
1599 {
1600 yyn += YYTERROR;
1601 if (0 <= yyn && yyn <= YYLAST && yycheck[yyn] == YYTERROR)
1602 {
1603 yyn = yytable[yyn];
1604 if (0 < yyn)
1605 break;
1606 }
1607 }
1608
1609 /* Pop the current state because it cannot handle the error token. */
1610 if (yyssp == yyss)
1611 YYABORT;
1612
1613 ]b4_locations_if([[ yyerror_range[0] = *yylsp;]])[
1614 yydestruct ("Error: popping",
1615 yystos[yystate], yyvsp]b4_locations_if([, yylsp])[]b4_user_args[);
1616 YYPOPSTACK (1);
1617 yystate = *yyssp;
1618 YY_STACK_PRINT (yyss, yyssp);
1619 }
1620
1621 *++yyvsp = yylval;
1622 ]b4_locations_if([[
1623 yyerror_range[1] = yylloc;
1624 /* Using YYLLOC is tempting, but would change the location of
1625 the lookahead. YYLOC is available though. */
1626 YYLLOC_DEFAULT (yyloc, (yyerror_range - 1), 2);
1627 *++yylsp = yyloc;]])[
1628
1629 /* Shift the error token. */
1630 YY_SYMBOL_PRINT ("Shifting", yystos[yyn], yyvsp, yylsp);
1631
1632 yystate = yyn;
1633 goto yynewstate;
1634
1635
1636 /*-------------------------------------.
1637 | yyacceptlab -- YYACCEPT comes here. |
1638 `-------------------------------------*/
1639 yyacceptlab:
1640 yyresult = 0;
1641 goto yyreturn;
1642
1643 /*-----------------------------------.
1644 | yyabortlab -- YYABORT comes here. |
1645 `-----------------------------------*/
1646 yyabortlab:
1647 yyresult = 1;
1648 goto yyreturn;
1649
1650 #if !defined(yyoverflow) || YYERROR_VERBOSE
1651 /*-------------------------------------------------.
1652 | yyexhaustedlab -- memory exhaustion comes here. |
1653 `-------------------------------------------------*/
1654 yyexhaustedlab:
1655 yyerror (]b4_yyerror_args[YY_("memory exhausted"));
1656 yyresult = 2;
1657 /* Fall through. */
1658 #endif
1659
1660 yyreturn:
1661 if (yychar != YYEMPTY)
1662 yydestruct ("Cleanup: discarding lookahead",
1663 yytoken, &yylval]b4_locations_if([, &yylloc])[]b4_user_args[);
1664 /* Do not reclaim the symbols of the rule which action triggered
1665 this YYABORT or YYACCEPT. */
1666 YYPOPSTACK (yylen);
1667 YY_STACK_PRINT (yyss, yyssp);
1668 while (yyssp != yyss)
1669 {
1670 yydestruct ("Cleanup: popping",
1671 yystos[*yyssp], yyvsp]b4_locations_if([, yylsp])[]b4_user_args[);
1672 YYPOPSTACK (1);
1673 }
1674 #ifndef yyoverflow
1675 if (yyss != yyssa)
1676 YYSTACK_FREE (yyss);
1677 #endif]b4_push_if([[
1678 yyps->yynew = 1;
1679
1680 yypushreturn:]])[
1681 #if YYERROR_VERBOSE
1682 if (yymsg != yymsgbuf)
1683 YYSTACK_FREE (yymsg);
1684 #endif
1685 /* Make sure YYID is used. */
1686 return YYID (yyresult);
1687 }
1688
1689
1690 ]b4_epilogue
1691 b4_defines_if(
1692 [@output(b4_spec_defines_file@)@
1693 b4_copyright([Skeleton interface for Bison's Yacc-like parsers in C],
1694 [1984, 1989, 1990, 2000, 2001, 2002, 2003, 2004, 2005,
1695 2006, 2007, 2008, 2009])
1696
1697 b4_percent_code_get([[requires]])[]dnl
1698
1699 b4_token_enums_defines(b4_tokens)
1700
1701 [#if ! defined YYSTYPE && ! defined YYSTYPE_IS_DECLARED
1702 ]m4_ifdef([b4_stype],
1703 [[typedef union ]b4_union_name[
1704 {
1705 ]b4_user_stype[
1706 } YYSTYPE;
1707 # define YYSTYPE_IS_TRIVIAL 1]],
1708 [m4_if(b4_tag_seen_flag, 0,
1709 [[typedef int YYSTYPE;
1710 # define YYSTYPE_IS_TRIVIAL 1]])])[
1711 # define yystype YYSTYPE /* obsolescent; will be withdrawn */
1712 # define YYSTYPE_IS_DECLARED 1
1713 #endif
1714
1715 ]b4_pure_if([], [[extern YYSTYPE ]b4_prefix[lval;]])
1716
1717 b4_locations_if(
1718 [#if ! defined YYLTYPE && ! defined YYLTYPE_IS_DECLARED
1719 typedef struct YYLTYPE
1720 {
1721 int first_line;
1722 int first_column;
1723 int last_line;
1724 int last_column;
1725 } YYLTYPE;
1726 # define yyltype YYLTYPE /* obsolescent; will be withdrawn */
1727 # define YYLTYPE_IS_DECLARED 1
1728 # define YYLTYPE_IS_TRIVIAL 1
1729 #endif
1730
1731 ]b4_pure_if([], [[extern YYLTYPE ]b4_prefix[lloc;]])
1732 )dnl b4_locations_if
1733 b4_push_if([[
1734 #ifndef YYPUSH_DECLS
1735 # define YYPUSH_DECLS
1736 struct ]b4_prefix[pstate;
1737 typedef struct ]b4_prefix[pstate ]b4_prefix[pstate;
1738 enum { YYPUSH_MORE = 4 };
1739 ]b4_pull_if([b4_c_function_decl([b4_prefix[parse]], [[int]], b4_parse_param)
1740 ])b4_c_function_decl([b4_prefix[push_parse]], [[int]],
1741 [[b4_prefix[pstate *yyps]], [[yyps]]]b4_pure_if([,
1742 [[[int yypushed_char]], [[yypushed_char]]],
1743 [[[YYSTYPE const *yypushed_val]], [[yypushed_val]]]b4_locations_if([,
1744 [[[YYLTYPE const *yypushed_loc]], [[yypushed_loc]]]])])m4_ifset([b4_parse_param], [,
1745 b4_parse_param]))
1746 b4_pull_if([b4_c_function_decl([b4_prefix[pull_parse]], [[int]],
1747 [[b4_prefix[pstate *yyps]], [[yyps]]]m4_ifset([b4_parse_param], [,
1748 b4_parse_param]))])
1749 b4_c_function_decl([b4_prefix[pstate_new]], [b4_prefix[pstate *]],
1750 [[[void]], []])
1751 b4_c_function_decl([b4_prefix[pstate_delete]], [[void]],
1752 [[b4_prefix[pstate *yyps]], [[yyps]]])[
1753 #endif
1754 ]])
1755 b4_percent_code_get([[provides]])[]dnl
1756 ])dnl b4_defines_if
1757 m4_divert_pop(0)
bison