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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 ]b4_locations_if([[
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 /* This macro is provided for backward compatibility. */
750
751 #ifndef YY_LOCATION_PRINT
752 # define YY_LOCATION_PRINT(File, Loc) ((void) 0)
753 #endif
754 ]])[
755
756 /* YYLEX -- calling `yylex' with the right arguments. */
757
758 #ifdef YYLEX_PARAM
759 # define YYLEX yylex (]b4_pure_if([&yylval[]b4_locations_if([, &yylloc]), ])[YYLEX_PARAM)
760 #else
761 # define YYLEX ]b4_c_function_call([yylex], [int], b4_lex_param)[
762 #endif
763
764 /* Enable debugging if requested. */
765 #if YYDEBUG
766
767 # ifndef YYFPRINTF
768 # include <stdio.h> /* INFRINGES ON USER NAME SPACE */
769 # define YYFPRINTF fprintf
770 # endif
771
772 # define YYDPRINTF(Args) \
773 do { \
774 if (yydebug) \
775 YYFPRINTF Args; \
776 } while (YYID (0))
777
778 # define YY_SYMBOL_PRINT(Title, Type, Value, Location) \
779 do { \
780 if (yydebug) \
781 { \
782 YYFPRINTF (stderr, "%s ", Title); \
783 yy_symbol_print (stderr, \
784 Type, Value]b4_locations_if([, Location])[]b4_user_args[); \
785 YYFPRINTF (stderr, "\n"); \
786 } \
787 } while (YYID (0))
788
789 ]b4_yy_symbol_print_generate([b4_c_function_def])[
790
791 /*------------------------------------------------------------------.
792 | yy_stack_print -- Print the state stack from its BOTTOM up to its |
793 | TOP (included). |
794 `------------------------------------------------------------------*/
795
796 ]b4_c_function_def([yy_stack_print], [static void],
797 [[yytype_int16 *yybottom], [yybottom]],
798 [[yytype_int16 *yytop], [yytop]])[
799 {
800 YYFPRINTF (stderr, "Stack now");
801 for (; yybottom <= yytop; yybottom++)
802 {
803 int yybot = *yybottom;
804 YYFPRINTF (stderr, " %d", yybot);
805 }
806 YYFPRINTF (stderr, "\n");
807 }
808
809 # define YY_STACK_PRINT(Bottom, Top) \
810 do { \
811 if (yydebug) \
812 yy_stack_print ((Bottom), (Top)); \
813 } while (YYID (0))
814
815
816 /*------------------------------------------------.
817 | Report that the YYRULE is going to be reduced. |
818 `------------------------------------------------*/
819
820 ]b4_c_function_def([yy_reduce_print], [static void],
821 [[YYSTYPE *yyvsp], [yyvsp]],
822 b4_locations_if([[[YYLTYPE *yylsp], [yylsp]],
823 ])[[int yyrule], [yyrule]]m4_ifset([b4_parse_param], [,
824 b4_parse_param]))[
825 {
826 int yynrhs = yyr2[yyrule];
827 int yyi;
828 unsigned long int yylno = yyrline[yyrule];
829 YYFPRINTF (stderr, "Reducing stack by rule %d (line %lu):\n",
830 yyrule - 1, yylno);
831 /* The symbols being reduced. */
832 for (yyi = 0; yyi < yynrhs; yyi++)
833 {
834 YYFPRINTF (stderr, " $%d = ", yyi + 1);
835 yy_symbol_print (stderr, yyrhs[yyprhs[yyrule] + yyi],
836 &]b4_rhs_value(yynrhs, yyi + 1)[
837 ]b4_locations_if([, &]b4_rhs_location(yynrhs, yyi + 1))[]dnl
838 b4_user_args[);
839 YYFPRINTF (stderr, "\n");
840 }
841 }
842
843 # define YY_REDUCE_PRINT(Rule) \
844 do { \
845 if (yydebug) \
846 yy_reduce_print (yyvsp, ]b4_locations_if([yylsp, ])[Rule]b4_user_args[); \
847 } while (YYID (0))
848
849 /* Nonzero means print parse trace. It is left uninitialized so that
850 multiple parsers can coexist. */
851 int yydebug;
852 #else /* !YYDEBUG */
853 # define YYDPRINTF(Args)
854 # define YY_SYMBOL_PRINT(Title, Type, Value, Location)
855 # define YY_STACK_PRINT(Bottom, Top)
856 # define YY_REDUCE_PRINT(Rule)
857 #endif /* !YYDEBUG */
858
859
860 /* YYINITDEPTH -- initial size of the parser's stacks. */
861 #ifndef YYINITDEPTH
862 # define YYINITDEPTH ]b4_stack_depth_init[
863 #endif
864
865 /* YYMAXDEPTH -- maximum size the stacks can grow to (effective only
866 if the built-in stack extension method is used).
867
868 Do not make this value too large; the results are undefined if
869 YYSTACK_ALLOC_MAXIMUM < YYSTACK_BYTES (YYMAXDEPTH)
870 evaluated with infinite-precision integer arithmetic. */
871
872 #ifndef YYMAXDEPTH
873 # define YYMAXDEPTH ]b4_stack_depth_max[
874 #endif
875
876 \f
877
878 #if YYERROR_VERBOSE
879
880 # ifndef yystrlen
881 # if defined __GLIBC__ && defined _STRING_H
882 # define yystrlen strlen
883 # else
884 /* Return the length of YYSTR. */
885 ]b4_c_function_def([yystrlen], [static YYSIZE_T],
886 [[const char *yystr], [yystr]])[
887 {
888 YYSIZE_T yylen;
889 for (yylen = 0; yystr[yylen]; yylen++)
890 continue;
891 return yylen;
892 }
893 # endif
894 # endif
895
896 # ifndef yystpcpy
897 # if defined __GLIBC__ && defined _STRING_H && defined _GNU_SOURCE
898 # define yystpcpy stpcpy
899 # else
900 /* Copy YYSRC to YYDEST, returning the address of the terminating '\0' in
901 YYDEST. */
902 ]b4_c_function_def([yystpcpy], [static char *],
903 [[char *yydest], [yydest]], [[const char *yysrc], [yysrc]])[
904 {
905 char *yyd = yydest;
906 const char *yys = yysrc;
907
908 while ((*yyd++ = *yys++) != '\0')
909 continue;
910
911 return yyd - 1;
912 }
913 # endif
914 # endif
915
916 # ifndef yytnamerr
917 /* Copy to YYRES the contents of YYSTR after stripping away unnecessary
918 quotes and backslashes, so that it's suitable for yyerror. The
919 heuristic is that double-quoting is unnecessary unless the string
920 contains an apostrophe, a comma, or backslash (other than
921 backslash-backslash). YYSTR is taken from yytname. If YYRES is
922 null, do not copy; instead, return the length of what the result
923 would have been. */
924 static YYSIZE_T
925 yytnamerr (char *yyres, const char *yystr)
926 {
927 if (*yystr == '"')
928 {
929 YYSIZE_T yyn = 0;
930 char const *yyp = yystr;
931
932 for (;;)
933 switch (*++yyp)
934 {
935 case '\'':
936 case ',':
937 goto do_not_strip_quotes;
938
939 case '\\':
940 if (*++yyp != '\\')
941 goto do_not_strip_quotes;
942 /* Fall through. */
943 default:
944 if (yyres)
945 yyres[yyn] = *yyp;
946 yyn++;
947 break;
948
949 case '"':
950 if (yyres)
951 yyres[yyn] = '\0';
952 return yyn;
953 }
954 do_not_strip_quotes: ;
955 }
956
957 if (! yyres)
958 return yystrlen (yystr);
959
960 return yystpcpy (yyres, yystr) - yyres;
961 }
962 # endif
963
964 /* Copy into *YYMSG, which is of size *YYMSG_ALLOC, an error message
965 about the unexpected token YYTOKEN while in state YYSTATE.
966
967 Return 0 if *YYMSG was successfully written. Return 1 if an ordinary
968 "syntax error" message will suffice instead. Return 2 if *YYMSG is
969 not large enough to hold the message. In the last case, also set
970 *YYMSG_ALLOC to either (a) the required number of bytes or (b) zero
971 if the required number of bytes is too large to store. */
972 static int
973 yysyntax_error (YYSIZE_T *yymsg_alloc, char **yymsg,
974 int yystate, int yytoken)
975 {
976 int yyn = yypact[yystate];
977
978 if (! (YYPACT_NINF < yyn && yyn <= YYLAST))
979 return 1;
980 else
981 {
982 YYSIZE_T yysize0 = yytnamerr (0, yytname[yytoken]);
983 YYSIZE_T yysize = yysize0;
984 YYSIZE_T yysize1;
985 enum { YYERROR_VERBOSE_ARGS_MAXIMUM = 5 };
986 /* Internationalized format string. */
987 const char *yyformat = 0;
988 /* Arguments of yyformat. */
989 char const *yyarg[YYERROR_VERBOSE_ARGS_MAXIMUM];
990
991 /* Start YYX at -YYN if negative to avoid negative indexes in
992 YYCHECK. In other words, skip the first -YYN actions for this
993 state because they are default actions. */
994 int yyxbegin = yyn < 0 ? -yyn : 0;
995
996 /* Stay within bounds of both yycheck and yytname. */
997 int yychecklim = YYLAST - yyn + 1;
998 int yyxend = yychecklim < YYNTOKENS ? yychecklim : YYNTOKENS;
999 /* Number of reported tokens (one for the "unexpected", one per
1000 "expected"). */
1001 int yycount = 0;
1002 int yyx;
1003
1004 yyarg[yycount++] = yytname[yytoken];
1005
1006 for (yyx = yyxbegin; yyx < yyxend; ++yyx)
1007 if (yycheck[yyx + yyn] == yyx && yyx != YYTERROR
1008 && !yytable_value_is_error (yytable[yyx + yyn]))
1009 {
1010 if (yycount == YYERROR_VERBOSE_ARGS_MAXIMUM)
1011 {
1012 yycount = 1;
1013 yysize = yysize0;
1014 break;
1015 }
1016 yyarg[yycount++] = yytname[yyx];
1017 yysize1 = yysize + yytnamerr (0, yytname[yyx]);
1018 if (! (yysize <= yysize1
1019 && yysize1 <= YYSTACK_ALLOC_MAXIMUM))
1020 {
1021 /* Overflow. */
1022 *yymsg_alloc = 0;
1023 return 2;
1024 }
1025 yysize = yysize1;
1026 }
1027
1028 switch (yycount)
1029 {
1030 #define YYCASE_(N, S) \
1031 case N: \
1032 yyformat = S; \
1033 break
1034 YYCASE_(1, YY_("syntax error, unexpected %s"));
1035 YYCASE_(2, YY_("syntax error, unexpected %s, expecting %s"));
1036 YYCASE_(3, YY_("syntax error, unexpected %s, expecting %s or %s"));
1037 YYCASE_(4, YY_("syntax error, unexpected %s, expecting %s or %s or %s"));
1038 YYCASE_(5, YY_("syntax error, unexpected %s, expecting %s or %s or %s or %s"));
1039 #undef YYCASE_
1040 }
1041
1042 yysize1 = yysize + yystrlen (yyformat);
1043 if (! (yysize <= yysize1 && yysize1 <= YYSTACK_ALLOC_MAXIMUM))
1044 {
1045 /* Overflow. */
1046 *yymsg_alloc = 0;
1047 return 2;
1048 }
1049 yysize = yysize1;
1050
1051 if (*yymsg_alloc < yysize)
1052 {
1053 *yymsg_alloc = 2 * yysize;
1054 if (! (yysize <= *yymsg_alloc
1055 && *yymsg_alloc <= YYSTACK_ALLOC_MAXIMUM))
1056 *yymsg_alloc = YYSTACK_ALLOC_MAXIMUM;
1057 return 2;
1058 }
1059
1060 /* Avoid sprintf, as that infringes on the user's name space.
1061 Don't have undefined behavior even if the translation
1062 produced a string with the wrong number of "%s"s. */
1063 {
1064 char *yyp = *yymsg;
1065 int yyi = 0;
1066 while ((*yyp = *yyformat) != '\0')
1067 if (*yyp == '%' && yyformat[1] == 's' && yyi < yycount)
1068 {
1069 yyp += yytnamerr (yyp, yyarg[yyi++]);
1070 yyformat += 2;
1071 }
1072 else
1073 {
1074 yyp++;
1075 yyformat++;
1076 }
1077 }
1078 return 0;
1079 }
1080 }
1081 #endif /* YYERROR_VERBOSE */
1082 \f
1083
1084 ]b4_yydestruct_generate([b4_c_function_def])b4_push_if([], [[
1085
1086
1087 /* Prevent warnings from -Wmissing-prototypes. */
1088 #ifdef YYPARSE_PARAM
1089 ]b4_c_function_decl([yyparse], [int],
1090 [[void *YYPARSE_PARAM], [YYPARSE_PARAM]])[
1091 #else /* ! YYPARSE_PARAM */
1092 ]b4_c_function_decl([yyparse], [int], b4_parse_param)[
1093 #endif /* ! YYPARSE_PARAM */]])b4_pure_if([], [
1094
1095 b4_declare_scanner_communication_variables])[]b4_push_if([[
1096
1097
1098 struct yypstate
1099 {]b4_declare_parser_state_variables[
1100 /* Used to determine if this is the first time this instance has
1101 been used. */
1102 int yynew;
1103 };]b4_pure_if([], [[
1104
1105 static char yypstate_allocated = 0;]])b4_pull_if([
1106
1107 b4_c_function_def([[yyparse]], [[int]], b4_parse_param)[
1108 {
1109 return yypull_parse (0]m4_ifset([b4_parse_param],
1110 [[, ]b4_c_args(b4_parse_param)])[);
1111 }
1112
1113 ]b4_c_function_def([[yypull_parse]], [[int]],
1114 [[[yypstate *yyps]], [[yyps]]]m4_ifset([b4_parse_param], [,
1115 b4_parse_param]))[
1116 {
1117 int yystatus;
1118 yypstate *yyps_local;]b4_pure_if([[
1119 int yychar;
1120 YYSTYPE yylval;]b4_locations_if([[
1121 YYLTYPE yylloc;]])])[
1122 if (yyps == 0)
1123 {
1124 yyps_local = yypstate_new ();
1125 if (!yyps_local)
1126 {]b4_pure_if([[
1127 yyerror (]b4_yyerror_args[YY_("memory exhausted"));]], [[
1128 if (!yypstate_allocated)
1129 yyerror (]b4_yyerror_args[YY_("memory exhausted"));]])[
1130 return 2;
1131 }
1132 }
1133 else
1134 yyps_local = yyps;
1135 do {
1136 yychar = YYLEX;
1137 yystatus =
1138 yypush_parse (yyps_local]b4_pure_if([[, yychar, &yylval]b4_locations_if([[, &yylloc]])])m4_ifset([b4_parse_param], [, b4_c_args(b4_parse_param)])[);
1139 } while (yystatus == YYPUSH_MORE);
1140 if (yyps == 0)
1141 yypstate_delete (yyps_local);
1142 return yystatus;
1143 }]])[
1144
1145 /* Initialize the parser data structure. */
1146 ]b4_c_function_def([[yypstate_new]], [[yypstate *]])[
1147 {
1148 yypstate *yyps;]b4_pure_if([], [[
1149 if (yypstate_allocated)
1150 return 0;]])[
1151 yyps = (yypstate *) malloc (sizeof *yyps);
1152 if (!yyps)
1153 return 0;
1154 yyps->yynew = 1;]b4_pure_if([], [[
1155 yypstate_allocated = 1;]])[
1156 return yyps;
1157 }
1158
1159 ]b4_c_function_def([[yypstate_delete]], [[void]],
1160 [[[yypstate *yyps]], [[yyps]]])[
1161 {
1162 #ifndef yyoverflow
1163 /* If the stack was reallocated but the parse did not complete, then the
1164 stack still needs to be freed. */
1165 if (!yyps->yynew && yyps->yyss != yyps->yyssa)
1166 YYSTACK_FREE (yyps->yyss);
1167 #endif
1168 free (yyps);]b4_pure_if([], [[
1169 yypstate_allocated = 0;]])[
1170 }
1171 ]b4_pure_if([[
1172 #define ]b4_prefix[nerrs yyps->]b4_prefix[nerrs]])[
1173 #define yystate yyps->yystate
1174 #define yyerrstatus yyps->yyerrstatus
1175 #define yyssa yyps->yyssa
1176 #define yyss yyps->yyss
1177 #define yyssp yyps->yyssp
1178 #define yyvsa yyps->yyvsa
1179 #define yyvs yyps->yyvs
1180 #define yyvsp yyps->yyvsp]b4_locations_if([[
1181 #define yylsa yyps->yylsa
1182 #define yyls yyps->yyls
1183 #define yylsp yyps->yylsp
1184 #define yyerror_range yyps->yyerror_range]])[
1185 #define yystacksize yyps->yystacksize
1186
1187
1188 /*---------------.
1189 | yypush_parse. |
1190 `---------------*/
1191
1192 ]b4_c_function_def([[yypush_parse]], [[int]],
1193 [[[yypstate *yyps]], [[yyps]]]b4_pure_if([,
1194 [[[int yypushed_char]], [[yypushed_char]]],
1195 [[[YYSTYPE const *yypushed_val]], [[yypushed_val]]]b4_locations_if([,
1196 [[[YYLTYPE const *yypushed_loc]], [[yypushed_loc]]]])])m4_ifset([b4_parse_param], [,
1197 b4_parse_param]))], [[
1198
1199
1200 /*----------.
1201 | yyparse. |
1202 `----------*/
1203
1204 #ifdef YYPARSE_PARAM
1205 ]b4_c_function_def([yyparse], [int],
1206 [[void *YYPARSE_PARAM], [YYPARSE_PARAM]])[
1207 #else /* ! YYPARSE_PARAM */
1208 ]b4_c_function_def([yyparse], [int], b4_parse_param)[
1209 #endif]])[
1210 {]b4_pure_if([b4_declare_scanner_communication_variables
1211 ])b4_push_if([b4_pure_if([], [[
1212 int yypushed_char = yychar;
1213 YYSTYPE yypushed_val = yylval;]b4_locations_if([[
1214 YYLTYPE yypushed_loc = yylloc;]])
1215 ])],
1216 [b4_declare_parser_state_variables
1217 ])[
1218 int yyn;
1219 int yyresult;
1220 /* Lookahead token as an internal (translated) token number. */
1221 int yytoken;
1222 /* The variables used to return semantic value and location from the
1223 action routines. */
1224 YYSTYPE yyval;]b4_locations_if([[
1225 YYLTYPE yyloc;]])[
1226
1227 #if YYERROR_VERBOSE
1228 /* Buffer for error messages, and its allocated size. */
1229 char yymsgbuf[128];
1230 char *yymsg = yymsgbuf;
1231 YYSIZE_T yymsg_alloc = sizeof yymsgbuf;
1232 #endif
1233
1234 #define YYPOPSTACK(N) (yyvsp -= (N), yyssp -= (N)]b4_locations_if([, yylsp -= (N)])[)
1235
1236 /* The number of symbols on the RHS of the reduced rule.
1237 Keep to zero when no symbol should be popped. */
1238 int yylen = 0;]b4_push_if([[
1239
1240 if (!yyps->yynew)
1241 {
1242 yyn = yypact[yystate];
1243 goto yyread_pushed_token;
1244 }]])[
1245
1246 yytoken = 0;
1247 yyss = yyssa;
1248 yyvs = yyvsa;]b4_locations_if([[
1249 yyls = yylsa;]])[
1250 yystacksize = YYINITDEPTH;
1251
1252 YYDPRINTF ((stderr, "Starting parse\n"));
1253
1254 yystate = 0;
1255 yyerrstatus = 0;
1256 yynerrs = 0;
1257 yychar = YYEMPTY; /* Cause a token to be read. */
1258
1259 /* Initialize stack pointers.
1260 Waste one element of value and location stack
1261 so that they stay on the same level as the state stack.
1262 The wasted elements are never initialized. */
1263 yyssp = yyss;
1264 yyvsp = yyvs;]b4_locations_if([[
1265 yylsp = yyls;
1266
1267 #if defined YYLTYPE_IS_TRIVIAL && YYLTYPE_IS_TRIVIAL
1268 /* Initialize the default location before parsing starts. */
1269 yylloc.first_line = yylloc.last_line = ]b4_location_initial_line[;
1270 yylloc.first_column = yylloc.last_column = ]b4_location_initial_column[;
1271 #endif]])
1272 m4_ifdef([b4_initial_action],[
1273 m4_pushdef([b4_at_dollar], [m4_define([b4_at_dollar_used])yylloc])dnl
1274 m4_pushdef([b4_dollar_dollar], [m4_define([b4_dollar_dollar_used])yylval])dnl
1275 /* User initialization code. */
1276 b4_user_initial_action
1277 m4_popdef([b4_dollar_dollar])dnl
1278 m4_popdef([b4_at_dollar])])dnl
1279 m4_ifdef([b4_dollar_dollar_used],[[ yyvsp[0] = yylval;
1280 ]])dnl
1281 m4_ifdef([b4_at_dollar_used], [[ yylsp[0] = yylloc;
1282 ]])[
1283 goto yysetstate;
1284
1285 /*------------------------------------------------------------.
1286 | yynewstate -- Push a new state, which is found in yystate. |
1287 `------------------------------------------------------------*/
1288 yynewstate:
1289 /* In all cases, when you get here, the value and location stacks
1290 have just been pushed. So pushing a state here evens the stacks. */
1291 yyssp++;
1292
1293 yysetstate:
1294 *yyssp = yystate;
1295
1296 if (yyss + yystacksize - 1 <= yyssp)
1297 {
1298 /* Get the current used size of the three stacks, in elements. */
1299 YYSIZE_T yysize = yyssp - yyss + 1;
1300
1301 #ifdef yyoverflow
1302 {
1303 /* Give user a chance to reallocate the stack. Use copies of
1304 these so that the &'s don't force the real ones into
1305 memory. */
1306 YYSTYPE *yyvs1 = yyvs;
1307 yytype_int16 *yyss1 = yyss;]b4_locations_if([
1308 YYLTYPE *yyls1 = yyls;])[
1309
1310 /* Each stack pointer address is followed by the size of the
1311 data in use in that stack, in bytes. This used to be a
1312 conditional around just the two extra args, but that might
1313 be undefined if yyoverflow is a macro. */
1314 yyoverflow (YY_("memory exhausted"),
1315 &yyss1, yysize * sizeof (*yyssp),
1316 &yyvs1, yysize * sizeof (*yyvsp),]b4_locations_if([
1317 &yyls1, yysize * sizeof (*yylsp),])[
1318 &yystacksize);
1319 ]b4_locations_if([
1320 yyls = yyls1;])[
1321 yyss = yyss1;
1322 yyvs = yyvs1;
1323 }
1324 #else /* no yyoverflow */
1325 # ifndef YYSTACK_RELOCATE
1326 goto yyexhaustedlab;
1327 # else
1328 /* Extend the stack our own way. */
1329 if (YYMAXDEPTH <= yystacksize)
1330 goto yyexhaustedlab;
1331 yystacksize *= 2;
1332 if (YYMAXDEPTH < yystacksize)
1333 yystacksize = YYMAXDEPTH;
1334
1335 {
1336 yytype_int16 *yyss1 = yyss;
1337 union yyalloc *yyptr =
1338 (union yyalloc *) YYSTACK_ALLOC (YYSTACK_BYTES (yystacksize));
1339 if (! yyptr)
1340 goto yyexhaustedlab;
1341 YYSTACK_RELOCATE (yyss_alloc, yyss);
1342 YYSTACK_RELOCATE (yyvs_alloc, yyvs);]b4_locations_if([
1343 YYSTACK_RELOCATE (yyls_alloc, yyls);])[
1344 # undef YYSTACK_RELOCATE
1345 if (yyss1 != yyssa)
1346 YYSTACK_FREE (yyss1);
1347 }
1348 # endif
1349 #endif /* no yyoverflow */
1350
1351 yyssp = yyss + yysize - 1;
1352 yyvsp = yyvs + yysize - 1;]b4_locations_if([
1353 yylsp = yyls + yysize - 1;])[
1354
1355 YYDPRINTF ((stderr, "Stack size increased to %lu\n",
1356 (unsigned long int) yystacksize));
1357
1358 if (yyss + yystacksize - 1 <= yyssp)
1359 YYABORT;
1360 }
1361
1362 YYDPRINTF ((stderr, "Entering state %d\n", yystate));
1363
1364 if (yystate == YYFINAL)
1365 YYACCEPT;
1366
1367 goto yybackup;
1368
1369 /*-----------.
1370 | yybackup. |
1371 `-----------*/
1372 yybackup:
1373
1374 /* Do appropriate processing given the current state. Read a
1375 lookahead token if we need one and don't already have one. */
1376
1377 /* First try to decide what to do without reference to lookahead token. */
1378 yyn = yypact[yystate];
1379 if (yypact_value_is_default (yyn))
1380 goto yydefault;
1381
1382 /* Not known => get a lookahead token if don't already have one. */
1383
1384 /* YYCHAR is either YYEMPTY or YYEOF or a valid lookahead symbol. */
1385 if (yychar == YYEMPTY)
1386 {]b4_push_if([[
1387 if (!yyps->yynew)
1388 {]b4_use_push_for_pull_if([], [[
1389 YYDPRINTF ((stderr, "Return for a new token:\n"));]])[
1390 yyresult = YYPUSH_MORE;
1391 goto yypushreturn;
1392 }
1393 yyps->yynew = 0;]b4_pure_if([], [[
1394 /* Restoring the pushed token is only necessary for the first
1395 yypush_parse invocation since subsequent invocations don't overwrite
1396 it before jumping to yyread_pushed_token. */
1397 yychar = yypushed_char;
1398 yylval = yypushed_val;]b4_locations_if([[
1399 yylloc = yypushed_loc;]])])[
1400 yyread_pushed_token:]])[
1401 YYDPRINTF ((stderr, "Reading a token: "));]b4_push_if([b4_pure_if([[
1402 yychar = yypushed_char;
1403 if (yypushed_val)
1404 yylval = *yypushed_val;]b4_locations_if([[
1405 if (yypushed_loc)
1406 yylloc = *yypushed_loc;]])])], [[
1407 yychar = YYLEX;]])[
1408 }
1409
1410 if (yychar <= YYEOF)
1411 {
1412 yychar = yytoken = YYEOF;
1413 YYDPRINTF ((stderr, "Now at end of input.\n"));
1414 }
1415 else
1416 {
1417 yytoken = YYTRANSLATE (yychar);
1418 YY_SYMBOL_PRINT ("Next token is", yytoken, &yylval, &yylloc);
1419 }
1420
1421 /* If the proper action on seeing token YYTOKEN is to reduce or to
1422 detect an error, take that action. */
1423 yyn += yytoken;
1424 if (yyn < 0 || YYLAST < yyn || yycheck[yyn] != yytoken)
1425 goto yydefault;
1426 yyn = yytable[yyn];
1427 if (yyn <= 0)
1428 {
1429 if (yytable_value_is_error (yyn))
1430 goto yyerrlab;
1431 yyn = -yyn;
1432 goto yyreduce;
1433 }
1434
1435 /* Count tokens shifted since error; after three, turn off error
1436 status. */
1437 if (yyerrstatus)
1438 yyerrstatus--;
1439
1440 /* Shift the lookahead token. */
1441 YY_SYMBOL_PRINT ("Shifting", yytoken, &yylval, &yylloc);
1442
1443 /* Discard the shifted token. */
1444 yychar = YYEMPTY;
1445
1446 yystate = yyn;
1447 *++yyvsp = yylval;
1448 ]b4_locations_if([ *++yylsp = yylloc;])[
1449 goto yynewstate;
1450
1451
1452 /*-----------------------------------------------------------.
1453 | yydefault -- do the default action for the current state. |
1454 `-----------------------------------------------------------*/
1455 yydefault:
1456 yyn = yydefact[yystate];
1457 if (yyn == 0)
1458 goto yyerrlab;
1459 goto yyreduce;
1460
1461
1462 /*-----------------------------.
1463 | yyreduce -- Do a reduction. |
1464 `-----------------------------*/
1465 yyreduce:
1466 /* yyn is the number of a rule to reduce with. */
1467 yylen = yyr2[yyn];
1468
1469 /* If YYLEN is nonzero, implement the default value of the action:
1470 `$$ = $1'.
1471
1472 Otherwise, the following line sets YYVAL to garbage.
1473 This behavior is undocumented and Bison
1474 users should not rely upon it. Assigning to YYVAL
1475 unconditionally makes the parser a bit smaller, and it avoids a
1476 GCC warning that YYVAL may be used uninitialized. */
1477 yyval = yyvsp[1-yylen];
1478
1479 ]b4_locations_if(
1480 [[ /* Default location. */
1481 YYLLOC_DEFAULT (yyloc, (yylsp - yylen), yylen);]])[
1482 YY_REDUCE_PRINT (yyn);
1483 switch (yyn)
1484 {
1485 ]b4_user_actions[
1486 default: break;
1487 }
1488 YY_SYMBOL_PRINT ("-> $$ =", yyr1[yyn], &yyval, &yyloc);
1489
1490 YYPOPSTACK (yylen);
1491 yylen = 0;
1492 YY_STACK_PRINT (yyss, yyssp);
1493
1494 *++yyvsp = yyval;]b4_locations_if([
1495 *++yylsp = yyloc;])[
1496
1497 /* Now `shift' the result of the reduction. Determine what state
1498 that goes to, based on the state we popped back to and the rule
1499 number reduced by. */
1500
1501 yyn = yyr1[yyn];
1502
1503 yystate = yypgoto[yyn - YYNTOKENS] + *yyssp;
1504 if (0 <= yystate && yystate <= YYLAST && yycheck[yystate] == *yyssp)
1505 yystate = yytable[yystate];
1506 else
1507 yystate = yydefgoto[yyn - YYNTOKENS];
1508
1509 goto yynewstate;
1510
1511
1512 /*------------------------------------.
1513 | yyerrlab -- here on detecting error |
1514 `------------------------------------*/
1515 yyerrlab:
1516 /* If not already recovering from an error, report this error. */
1517 if (!yyerrstatus)
1518 {
1519 ++yynerrs;
1520 #if ! YYERROR_VERBOSE
1521 yyerror (]b4_yyerror_args[YY_("syntax error"));
1522 #else
1523 while (1)
1524 {
1525 int yysyntax_error_status =
1526 yysyntax_error (&yymsg_alloc, &yymsg, yystate, yytoken);
1527 if (yysyntax_error_status == 2 && 0 < yymsg_alloc)
1528 {
1529 if (yymsg != yymsgbuf)
1530 YYSTACK_FREE (yymsg);
1531 yymsg = (char *) YYSTACK_ALLOC (yymsg_alloc);
1532 if (yymsg)
1533 continue;
1534 yymsg = yymsgbuf;
1535 yymsg_alloc = sizeof yymsgbuf;
1536 }
1537 if (yysyntax_error_status == 0)
1538 yyerror (]b4_yyerror_args[yymsg);
1539 else
1540 yyerror (]b4_yyerror_args[YY_("syntax error"));
1541 if (yysyntax_error_status == 2)
1542 goto yyexhaustedlab;
1543 break;
1544 }
1545 #endif
1546 }
1547
1548 ]b4_locations_if([[ yyerror_range[0] = yylloc;]])[
1549
1550 if (yyerrstatus == 3)
1551 {
1552 /* If just tried and failed to reuse lookahead token after an
1553 error, discard it. */
1554
1555 if (yychar <= YYEOF)
1556 {
1557 /* Return failure if at end of input. */
1558 if (yychar == YYEOF)
1559 YYABORT;
1560 }
1561 else
1562 {
1563 yydestruct ("Error: discarding",
1564 yytoken, &yylval]b4_locations_if([, &yylloc])[]b4_user_args[);
1565 yychar = YYEMPTY;
1566 }
1567 }
1568
1569 /* Else will try to reuse lookahead token after shifting the error
1570 token. */
1571 goto yyerrlab1;
1572
1573
1574 /*---------------------------------------------------.
1575 | yyerrorlab -- error raised explicitly by YYERROR. |
1576 `---------------------------------------------------*/
1577 yyerrorlab:
1578
1579 /* Pacify compilers like GCC when the user code never invokes
1580 YYERROR and the label yyerrorlab therefore never appears in user
1581 code. */
1582 if (/*CONSTCOND*/ 0)
1583 goto yyerrorlab;
1584
1585 ]b4_locations_if([[ yyerror_range[0] = yylsp[1-yylen];
1586 ]])[ /* Do not reclaim the symbols of the rule which action triggered
1587 this YYERROR. */
1588 YYPOPSTACK (yylen);
1589 yylen = 0;
1590 YY_STACK_PRINT (yyss, yyssp);
1591 yystate = *yyssp;
1592 goto yyerrlab1;
1593
1594
1595 /*-------------------------------------------------------------.
1596 | yyerrlab1 -- common code for both syntax error and YYERROR. |
1597 `-------------------------------------------------------------*/
1598 yyerrlab1:
1599 yyerrstatus = 3; /* Each real token shifted decrements this. */
1600
1601 for (;;)
1602 {
1603 yyn = yypact[yystate];
1604 if (!yypact_value_is_default (yyn))
1605 {
1606 yyn += YYTERROR;
1607 if (0 <= yyn && yyn <= YYLAST && yycheck[yyn] == YYTERROR)
1608 {
1609 yyn = yytable[yyn];
1610 if (0 < yyn)
1611 break;
1612 }
1613 }
1614
1615 /* Pop the current state because it cannot handle the error token. */
1616 if (yyssp == yyss)
1617 YYABORT;
1618
1619 ]b4_locations_if([[ yyerror_range[0] = *yylsp;]])[
1620 yydestruct ("Error: popping",
1621 yystos[yystate], yyvsp]b4_locations_if([, yylsp])[]b4_user_args[);
1622 YYPOPSTACK (1);
1623 yystate = *yyssp;
1624 YY_STACK_PRINT (yyss, yyssp);
1625 }
1626
1627 *++yyvsp = yylval;
1628 ]b4_locations_if([[
1629 yyerror_range[1] = yylloc;
1630 /* Using YYLLOC is tempting, but would change the location of
1631 the lookahead. YYLOC is available though. */
1632 YYLLOC_DEFAULT (yyloc, (yyerror_range - 1), 2);
1633 *++yylsp = yyloc;]])[
1634
1635 /* Shift the error token. */
1636 YY_SYMBOL_PRINT ("Shifting", yystos[yyn], yyvsp, yylsp);
1637
1638 yystate = yyn;
1639 goto yynewstate;
1640
1641
1642 /*-------------------------------------.
1643 | yyacceptlab -- YYACCEPT comes here. |
1644 `-------------------------------------*/
1645 yyacceptlab:
1646 yyresult = 0;
1647 goto yyreturn;
1648
1649 /*-----------------------------------.
1650 | yyabortlab -- YYABORT comes here. |
1651 `-----------------------------------*/
1652 yyabortlab:
1653 yyresult = 1;
1654 goto yyreturn;
1655
1656 #if !defined(yyoverflow) || YYERROR_VERBOSE
1657 /*-------------------------------------------------.
1658 | yyexhaustedlab -- memory exhaustion comes here. |
1659 `-------------------------------------------------*/
1660 yyexhaustedlab:
1661 yyerror (]b4_yyerror_args[YY_("memory exhausted"));
1662 yyresult = 2;
1663 /* Fall through. */
1664 #endif
1665
1666 yyreturn:
1667 if (yychar != YYEMPTY)
1668 yydestruct ("Cleanup: discarding lookahead",
1669 yytoken, &yylval]b4_locations_if([, &yylloc])[]b4_user_args[);
1670 /* Do not reclaim the symbols of the rule which action triggered
1671 this YYABORT or YYACCEPT. */
1672 YYPOPSTACK (yylen);
1673 YY_STACK_PRINT (yyss, yyssp);
1674 while (yyssp != yyss)
1675 {
1676 yydestruct ("Cleanup: popping",
1677 yystos[*yyssp], yyvsp]b4_locations_if([, yylsp])[]b4_user_args[);
1678 YYPOPSTACK (1);
1679 }
1680 #ifndef yyoverflow
1681 if (yyss != yyssa)
1682 YYSTACK_FREE (yyss);
1683 #endif]b4_push_if([[
1684 yyps->yynew = 1;
1685
1686 yypushreturn:]])[
1687 #if YYERROR_VERBOSE
1688 if (yymsg != yymsgbuf)
1689 YYSTACK_FREE (yymsg);
1690 #endif
1691 /* Make sure YYID is used. */
1692 return YYID (yyresult);
1693 }
1694
1695
1696 ]b4_epilogue
1697 b4_defines_if(
1698 [@output(b4_spec_defines_file@)@
1699 b4_copyright([Skeleton interface for Bison's Yacc-like parsers in C],
1700 [1984, 1989, 1990, 2000, 2001, 2002, 2003, 2004, 2005,
1701 2006, 2007, 2008, 2009])
1702
1703 b4_percent_code_get([[requires]])[]dnl
1704
1705 b4_token_enums_defines(b4_tokens)
1706
1707 [#if ! defined YYSTYPE && ! defined YYSTYPE_IS_DECLARED
1708 ]m4_ifdef([b4_stype],
1709 [[typedef union ]b4_union_name[
1710 {
1711 ]b4_user_stype[
1712 } YYSTYPE;
1713 # define YYSTYPE_IS_TRIVIAL 1]],
1714 [m4_if(b4_tag_seen_flag, 0,
1715 [[typedef int YYSTYPE;
1716 # define YYSTYPE_IS_TRIVIAL 1]])])[
1717 # define yystype YYSTYPE /* obsolescent; will be withdrawn */
1718 # define YYSTYPE_IS_DECLARED 1
1719 #endif
1720
1721 ]b4_pure_if([], [[extern YYSTYPE ]b4_prefix[lval;]])
1722
1723 b4_locations_if(
1724 [#if ! defined YYLTYPE && ! defined YYLTYPE_IS_DECLARED
1725 typedef struct YYLTYPE
1726 {
1727 int first_line;
1728 int first_column;
1729 int last_line;
1730 int last_column;
1731 } YYLTYPE;
1732 # define yyltype YYLTYPE /* obsolescent; will be withdrawn */
1733 # define YYLTYPE_IS_DECLARED 1
1734 # define YYLTYPE_IS_TRIVIAL 1
1735 #endif
1736
1737 ]b4_pure_if([], [[extern YYLTYPE ]b4_prefix[lloc;]])
1738 )dnl b4_locations_if
1739 b4_push_if([[
1740 #ifndef YYPUSH_DECLS
1741 # define YYPUSH_DECLS
1742 struct ]b4_prefix[pstate;
1743 typedef struct ]b4_prefix[pstate ]b4_prefix[pstate;
1744 enum { YYPUSH_MORE = 4 };
1745 ]b4_pull_if([b4_c_function_decl([b4_prefix[parse]], [[int]], b4_parse_param)
1746 ])b4_c_function_decl([b4_prefix[push_parse]], [[int]],
1747 [[b4_prefix[pstate *yyps]], [[yyps]]]b4_pure_if([,
1748 [[[int yypushed_char]], [[yypushed_char]]],
1749 [[[YYSTYPE const *yypushed_val]], [[yypushed_val]]]b4_locations_if([,
1750 [[[YYLTYPE const *yypushed_loc]], [[yypushed_loc]]]])])m4_ifset([b4_parse_param], [,
1751 b4_parse_param]))
1752 b4_pull_if([b4_c_function_decl([b4_prefix[pull_parse]], [[int]],
1753 [[b4_prefix[pstate *yyps]], [[yyps]]]m4_ifset([b4_parse_param], [,
1754 b4_parse_param]))])
1755 b4_c_function_decl([b4_prefix[pstate_new]], [b4_prefix[pstate *]],
1756 [[[void]], []])
1757 b4_c_function_decl([b4_prefix[pstate_delete]], [[void]],
1758 [[b4_prefix[pstate *yyps]], [[yyps]]])[
1759 #endif
1760 ]])
1761 b4_percent_code_get([[provides]])[]dnl
1762 ])dnl b4_defines_if
1763 m4_divert_pop(0)
bison