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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]b4_locations_if([[
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 /* This macro is provided for backward compatibility. */
751
752 #ifndef YY_LOCATION_PRINT
753 # define YY_LOCATION_PRINT(File, Loc) ((void) 0)
754 #endif]])[
755
756
757 /* YYLEX -- calling `yylex' with the right arguments. */
758
759 #ifdef YYLEX_PARAM
760 # define YYLEX yylex (]b4_pure_if([&yylval[]b4_locations_if([, &yylloc]), ])[YYLEX_PARAM)
761 #else
762 # define YYLEX ]b4_c_function_call([yylex], [int], b4_lex_param)[
763 #endif
764
765 /* Enable debugging if requested. */
766 #if YYDEBUG
767
768 # ifndef YYFPRINTF
769 # include <stdio.h> /* INFRINGES ON USER NAME SPACE */
770 # define YYFPRINTF fprintf
771 # endif
772
773 # define YYDPRINTF(Args) \
774 do { \
775 if (yydebug) \
776 YYFPRINTF Args; \
777 } while (YYID (0))
778
779 # define YY_SYMBOL_PRINT(Title, Type, Value, Location) \
780 do { \
781 if (yydebug) \
782 { \
783 YYFPRINTF (stderr, "%s ", Title); \
784 yy_symbol_print (stderr, \
785 Type, Value]b4_locations_if([, Location])[]b4_user_args[); \
786 YYFPRINTF (stderr, "\n"); \
787 } \
788 } while (YYID (0))
789
790 ]b4_yy_symbol_print_generate([b4_c_function_def])[
791
792 /*------------------------------------------------------------------.
793 | yy_stack_print -- Print the state stack from its BOTTOM up to its |
794 | TOP (included). |
795 `------------------------------------------------------------------*/
796
797 ]b4_c_function_def([yy_stack_print], [static void],
798 [[yytype_int16 *yybottom], [yybottom]],
799 [[yytype_int16 *yytop], [yytop]])[
800 {
801 YYFPRINTF (stderr, "Stack now");
802 for (; yybottom <= yytop; yybottom++)
803 {
804 int yybot = *yybottom;
805 YYFPRINTF (stderr, " %d", yybot);
806 }
807 YYFPRINTF (stderr, "\n");
808 }
809
810 # define YY_STACK_PRINT(Bottom, Top) \
811 do { \
812 if (yydebug) \
813 yy_stack_print ((Bottom), (Top)); \
814 } while (YYID (0))
815
816
817 /*------------------------------------------------.
818 | Report that the YYRULE is going to be reduced. |
819 `------------------------------------------------*/
820
821 ]b4_c_function_def([yy_reduce_print], [static void],
822 [[YYSTYPE *yyvsp], [yyvsp]],
823 b4_locations_if([[[YYLTYPE *yylsp], [yylsp]],
824 ])[[int yyrule], [yyrule]]m4_ifset([b4_parse_param], [,
825 b4_parse_param]))[
826 {
827 int yynrhs = yyr2[yyrule];
828 int yyi;
829 unsigned long int yylno = yyrline[yyrule];
830 YYFPRINTF (stderr, "Reducing stack by rule %d (line %lu):\n",
831 yyrule - 1, yylno);
832 /* The symbols being reduced. */
833 for (yyi = 0; yyi < yynrhs; yyi++)
834 {
835 YYFPRINTF (stderr, " $%d = ", yyi + 1);
836 yy_symbol_print (stderr, yyrhs[yyprhs[yyrule] + yyi],
837 &]b4_rhs_value(yynrhs, yyi + 1)[
838 ]b4_locations_if([, &]b4_rhs_location(yynrhs, yyi + 1))[]dnl
839 b4_user_args[);
840 YYFPRINTF (stderr, "\n");
841 }
842 }
843
844 # define YY_REDUCE_PRINT(Rule) \
845 do { \
846 if (yydebug) \
847 yy_reduce_print (yyvsp, ]b4_locations_if([yylsp, ])[Rule]b4_user_args[); \
848 } while (YYID (0))
849
850 /* Nonzero means print parse trace. It is left uninitialized so that
851 multiple parsers can coexist. */
852 int yydebug;
853 #else /* !YYDEBUG */
854 # define YYDPRINTF(Args)
855 # define YY_SYMBOL_PRINT(Title, Type, Value, Location)
856 # define YY_STACK_PRINT(Bottom, Top)
857 # define YY_REDUCE_PRINT(Rule)
858 #endif /* !YYDEBUG */
859
860
861 /* YYINITDEPTH -- initial size of the parser's stacks. */
862 #ifndef YYINITDEPTH
863 # define YYINITDEPTH ]b4_stack_depth_init[
864 #endif
865
866 /* YYMAXDEPTH -- maximum size the stacks can grow to (effective only
867 if the built-in stack extension method is used).
868
869 Do not make this value too large; the results are undefined if
870 YYSTACK_ALLOC_MAXIMUM < YYSTACK_BYTES (YYMAXDEPTH)
871 evaluated with infinite-precision integer arithmetic. */
872
873 #ifndef YYMAXDEPTH
874 # define YYMAXDEPTH ]b4_stack_depth_max[
875 #endif
876
877 \f
878
879 #if YYERROR_VERBOSE
880
881 # ifndef yystrlen
882 # if defined __GLIBC__ && defined _STRING_H
883 # define yystrlen strlen
884 # else
885 /* Return the length of YYSTR. */
886 ]b4_c_function_def([yystrlen], [static YYSIZE_T],
887 [[const char *yystr], [yystr]])[
888 {
889 YYSIZE_T yylen;
890 for (yylen = 0; yystr[yylen]; yylen++)
891 continue;
892 return yylen;
893 }
894 # endif
895 # endif
896
897 # ifndef yystpcpy
898 # if defined __GLIBC__ && defined _STRING_H && defined _GNU_SOURCE
899 # define yystpcpy stpcpy
900 # else
901 /* Copy YYSRC to YYDEST, returning the address of the terminating '\0' in
902 YYDEST. */
903 ]b4_c_function_def([yystpcpy], [static char *],
904 [[char *yydest], [yydest]], [[const char *yysrc], [yysrc]])[
905 {
906 char *yyd = yydest;
907 const char *yys = yysrc;
908
909 while ((*yyd++ = *yys++) != '\0')
910 continue;
911
912 return yyd - 1;
913 }
914 # endif
915 # endif
916
917 # ifndef yytnamerr
918 /* Copy to YYRES the contents of YYSTR after stripping away unnecessary
919 quotes and backslashes, so that it's suitable for yyerror. The
920 heuristic is that double-quoting is unnecessary unless the string
921 contains an apostrophe, a comma, or backslash (other than
922 backslash-backslash). YYSTR is taken from yytname. If YYRES is
923 null, do not copy; instead, return the length of what the result
924 would have been. */
925 static YYSIZE_T
926 yytnamerr (char *yyres, const char *yystr)
927 {
928 if (*yystr == '"')
929 {
930 YYSIZE_T yyn = 0;
931 char const *yyp = yystr;
932
933 for (;;)
934 switch (*++yyp)
935 {
936 case '\'':
937 case ',':
938 goto do_not_strip_quotes;
939
940 case '\\':
941 if (*++yyp != '\\')
942 goto do_not_strip_quotes;
943 /* Fall through. */
944 default:
945 if (yyres)
946 yyres[yyn] = *yyp;
947 yyn++;
948 break;
949
950 case '"':
951 if (yyres)
952 yyres[yyn] = '\0';
953 return yyn;
954 }
955 do_not_strip_quotes: ;
956 }
957
958 if (! yyres)
959 return yystrlen (yystr);
960
961 return yystpcpy (yyres, yystr) - yyres;
962 }
963 # endif
964
965 /* Copy into *YYMSG, which is of size *YYMSG_ALLOC, an error message
966 about the unexpected token YYTOKEN while in state YYSTATE.
967
968 Return 0 if *YYMSG was successfully written. Return 1 if an ordinary
969 "syntax error" message will suffice instead. Return 2 if *YYMSG is
970 not large enough to hold the message. In the last case, also set
971 *YYMSG_ALLOC to either (a) the required number of bytes or (b) zero
972 if the required number of bytes is too large to store. */
973 static int
974 yysyntax_error (YYSIZE_T *yymsg_alloc, char **yymsg,
975 int yystate, int yytoken)
976 {
977 int yyn = yypact[yystate];
978
979 if (! (YYPACT_NINF < yyn && yyn <= YYLAST))
980 return 1;
981 else
982 {
983 YYSIZE_T yysize0 = yytnamerr (0, yytname[yytoken]);
984 YYSIZE_T yysize = yysize0;
985 YYSIZE_T yysize1;
986 enum { YYERROR_VERBOSE_ARGS_MAXIMUM = 5 };
987 /* Internationalized format string. */
988 const char *yyformat = 0;
989 /* Arguments of yyformat. */
990 char const *yyarg[YYERROR_VERBOSE_ARGS_MAXIMUM];
991
992 /* Start YYX at -YYN if negative to avoid negative indexes in
993 YYCHECK. In other words, skip the first -YYN actions for this
994 state because they are default actions. */
995 int yyxbegin = yyn < 0 ? -yyn : 0;
996
997 /* Stay within bounds of both yycheck and yytname. */
998 int yychecklim = YYLAST - yyn + 1;
999 int yyxend = yychecklim < YYNTOKENS ? yychecklim : YYNTOKENS;
1000 /* Number of reported tokens (one for the "unexpected", one per
1001 "expected"). */
1002 int yycount = 0;
1003 int yyx;
1004
1005 yyarg[yycount++] = yytname[yytoken];
1006
1007 for (yyx = yyxbegin; yyx < yyxend; ++yyx)
1008 if (yycheck[yyx + yyn] == yyx && yyx != YYTERROR
1009 && !yytable_value_is_error (yytable[yyx + yyn]))
1010 {
1011 if (yycount == YYERROR_VERBOSE_ARGS_MAXIMUM)
1012 {
1013 yycount = 1;
1014 yysize = yysize0;
1015 break;
1016 }
1017 yyarg[yycount++] = yytname[yyx];
1018 yysize1 = yysize + yytnamerr (0, yytname[yyx]);
1019 if (! (yysize <= yysize1
1020 && yysize1 <= YYSTACK_ALLOC_MAXIMUM))
1021 {
1022 /* Overflow. */
1023 *yymsg_alloc = 0;
1024 return 2;
1025 }
1026 yysize = yysize1;
1027 }
1028
1029 switch (yycount)
1030 {
1031 #define YYCASE_(N, S) \
1032 case N: \
1033 yyformat = S; \
1034 break
1035 YYCASE_(1, YY_("syntax error, unexpected %s"));
1036 YYCASE_(2, YY_("syntax error, unexpected %s, expecting %s"));
1037 YYCASE_(3, YY_("syntax error, unexpected %s, expecting %s or %s"));
1038 YYCASE_(4, YY_("syntax error, unexpected %s, expecting %s or %s or %s"));
1039 YYCASE_(5, YY_("syntax error, unexpected %s, expecting %s or %s or %s or %s"));
1040 #undef YYCASE_
1041 }
1042
1043 yysize1 = yysize + yystrlen (yyformat);
1044 if (! (yysize <= yysize1 && yysize1 <= YYSTACK_ALLOC_MAXIMUM))
1045 {
1046 /* Overflow. */
1047 *yymsg_alloc = 0;
1048 return 2;
1049 }
1050 yysize = yysize1;
1051
1052 if (*yymsg_alloc < yysize)
1053 {
1054 *yymsg_alloc = 2 * yysize;
1055 if (! (yysize <= *yymsg_alloc
1056 && *yymsg_alloc <= YYSTACK_ALLOC_MAXIMUM))
1057 *yymsg_alloc = YYSTACK_ALLOC_MAXIMUM;
1058 return 2;
1059 }
1060
1061 /* Avoid sprintf, as that infringes on the user's name space.
1062 Don't have undefined behavior even if the translation
1063 produced a string with the wrong number of "%s"s. */
1064 {
1065 char *yyp = *yymsg;
1066 int yyi = 0;
1067 while ((*yyp = *yyformat) != '\0')
1068 if (*yyp == '%' && yyformat[1] == 's' && yyi < yycount)
1069 {
1070 yyp += yytnamerr (yyp, yyarg[yyi++]);
1071 yyformat += 2;
1072 }
1073 else
1074 {
1075 yyp++;
1076 yyformat++;
1077 }
1078 }
1079 return 0;
1080 }
1081 }
1082 #endif /* YYERROR_VERBOSE */
1083 \f
1084
1085 ]b4_yydestruct_generate([b4_c_function_def])b4_push_if([], [[
1086
1087
1088 /* Prevent warnings from -Wmissing-prototypes. */
1089 #ifdef YYPARSE_PARAM
1090 ]b4_c_function_decl([yyparse], [int],
1091 [[void *YYPARSE_PARAM], [YYPARSE_PARAM]])[
1092 #else /* ! YYPARSE_PARAM */
1093 ]b4_c_function_decl([yyparse], [int], b4_parse_param)[
1094 #endif /* ! YYPARSE_PARAM */]])b4_pure_if([], [
1095
1096 b4_declare_scanner_communication_variables])[]b4_push_if([[
1097
1098
1099 struct yypstate
1100 {]b4_declare_parser_state_variables[
1101 /* Used to determine if this is the first time this instance has
1102 been used. */
1103 int yynew;
1104 };]b4_pure_if([], [[
1105
1106 static char yypstate_allocated = 0;]])b4_pull_if([
1107
1108 b4_c_function_def([[yyparse]], [[int]], b4_parse_param)[
1109 {
1110 return yypull_parse (0]m4_ifset([b4_parse_param],
1111 [[, ]b4_c_args(b4_parse_param)])[);
1112 }
1113
1114 ]b4_c_function_def([[yypull_parse]], [[int]],
1115 [[[yypstate *yyps]], [[yyps]]]m4_ifset([b4_parse_param], [,
1116 b4_parse_param]))[
1117 {
1118 int yystatus;
1119 yypstate *yyps_local;]b4_pure_if([[
1120 int yychar;
1121 YYSTYPE yylval;]b4_locations_if([[
1122 YYLTYPE yylloc;]])])[
1123 if (yyps == 0)
1124 {
1125 yyps_local = yypstate_new ();
1126 if (!yyps_local)
1127 {]b4_pure_if([[
1128 yyerror (]b4_yyerror_args[YY_("memory exhausted"));]], [[
1129 if (!yypstate_allocated)
1130 yyerror (]b4_yyerror_args[YY_("memory exhausted"));]])[
1131 return 2;
1132 }
1133 }
1134 else
1135 yyps_local = yyps;
1136 do {
1137 yychar = YYLEX;
1138 yystatus =
1139 yypush_parse (yyps_local]b4_pure_if([[, yychar, &yylval]b4_locations_if([[, &yylloc]])])m4_ifset([b4_parse_param], [, b4_c_args(b4_parse_param)])[);
1140 } while (yystatus == YYPUSH_MORE);
1141 if (yyps == 0)
1142 yypstate_delete (yyps_local);
1143 return yystatus;
1144 }]])[
1145
1146 /* Initialize the parser data structure. */
1147 ]b4_c_function_def([[yypstate_new]], [[yypstate *]])[
1148 {
1149 yypstate *yyps;]b4_pure_if([], [[
1150 if (yypstate_allocated)
1151 return 0;]])[
1152 yyps = (yypstate *) malloc (sizeof *yyps);
1153 if (!yyps)
1154 return 0;
1155 yyps->yynew = 1;]b4_pure_if([], [[
1156 yypstate_allocated = 1;]])[
1157 return yyps;
1158 }
1159
1160 ]b4_c_function_def([[yypstate_delete]], [[void]],
1161 [[[yypstate *yyps]], [[yyps]]])[
1162 {
1163 #ifndef yyoverflow
1164 /* If the stack was reallocated but the parse did not complete, then the
1165 stack still needs to be freed. */
1166 if (!yyps->yynew && yyps->yyss != yyps->yyssa)
1167 YYSTACK_FREE (yyps->yyss);
1168 #endif
1169 free (yyps);]b4_pure_if([], [[
1170 yypstate_allocated = 0;]])[
1171 }
1172 ]b4_pure_if([[
1173 #define ]b4_prefix[nerrs yyps->]b4_prefix[nerrs]])[
1174 #define yystate yyps->yystate
1175 #define yyerrstatus yyps->yyerrstatus
1176 #define yyssa yyps->yyssa
1177 #define yyss yyps->yyss
1178 #define yyssp yyps->yyssp
1179 #define yyvsa yyps->yyvsa
1180 #define yyvs yyps->yyvs
1181 #define yyvsp yyps->yyvsp]b4_locations_if([[
1182 #define yylsa yyps->yylsa
1183 #define yyls yyps->yyls
1184 #define yylsp yyps->yylsp
1185 #define yyerror_range yyps->yyerror_range]])[
1186 #define yystacksize yyps->yystacksize
1187
1188
1189 /*---------------.
1190 | yypush_parse. |
1191 `---------------*/
1192
1193 ]b4_c_function_def([[yypush_parse]], [[int]],
1194 [[[yypstate *yyps]], [[yyps]]]b4_pure_if([,
1195 [[[int yypushed_char]], [[yypushed_char]]],
1196 [[[YYSTYPE const *yypushed_val]], [[yypushed_val]]]b4_locations_if([,
1197 [[[YYLTYPE const *yypushed_loc]], [[yypushed_loc]]]])])m4_ifset([b4_parse_param], [,
1198 b4_parse_param]))], [[
1199
1200
1201 /*----------.
1202 | yyparse. |
1203 `----------*/
1204
1205 #ifdef YYPARSE_PARAM
1206 ]b4_c_function_def([yyparse], [int],
1207 [[void *YYPARSE_PARAM], [YYPARSE_PARAM]])[
1208 #else /* ! YYPARSE_PARAM */
1209 ]b4_c_function_def([yyparse], [int], b4_parse_param)[
1210 #endif]])[
1211 {]b4_pure_if([b4_declare_scanner_communication_variables
1212 ])b4_push_if([b4_pure_if([], [[
1213 int yypushed_char = yychar;
1214 YYSTYPE yypushed_val = yylval;]b4_locations_if([[
1215 YYLTYPE yypushed_loc = yylloc;]])
1216 ])],
1217 [b4_declare_parser_state_variables
1218 ])[
1219 int yyn;
1220 int yyresult;
1221 /* Lookahead token as an internal (translated) token number. */
1222 int yytoken;
1223 /* The variables used to return semantic value and location from the
1224 action routines. */
1225 YYSTYPE yyval;]b4_locations_if([[
1226 YYLTYPE yyloc;]])[
1227
1228 #if YYERROR_VERBOSE
1229 /* Buffer for error messages, and its allocated size. */
1230 char yymsgbuf[128];
1231 char *yymsg = yymsgbuf;
1232 YYSIZE_T yymsg_alloc = sizeof yymsgbuf;
1233 #endif
1234
1235 #define YYPOPSTACK(N) (yyvsp -= (N), yyssp -= (N)]b4_locations_if([, yylsp -= (N)])[)
1236
1237 /* The number of symbols on the RHS of the reduced rule.
1238 Keep to zero when no symbol should be popped. */
1239 int yylen = 0;]b4_push_if([[
1240
1241 if (!yyps->yynew)
1242 {
1243 yyn = yypact[yystate];
1244 goto yyread_pushed_token;
1245 }]])[
1246
1247 yytoken = 0;
1248 yyss = yyssa;
1249 yyvs = yyvsa;]b4_locations_if([[
1250 yyls = yylsa;]])[
1251 yystacksize = YYINITDEPTH;
1252
1253 YYDPRINTF ((stderr, "Starting parse\n"));
1254
1255 yystate = 0;
1256 yyerrstatus = 0;
1257 yynerrs = 0;
1258 yychar = YYEMPTY; /* Cause a token to be read. */
1259
1260 /* Initialize stack pointers.
1261 Waste one element of value and location stack
1262 so that they stay on the same level as the state stack.
1263 The wasted elements are never initialized. */
1264 yyssp = yyss;
1265 yyvsp = yyvs;]b4_locations_if([[
1266 yylsp = yyls;
1267
1268 #if defined YYLTYPE_IS_TRIVIAL && YYLTYPE_IS_TRIVIAL
1269 /* Initialize the default location before parsing starts. */
1270 yylloc.first_line = yylloc.last_line = ]b4_location_initial_line[;
1271 yylloc.first_column = yylloc.last_column = ]b4_location_initial_column[;
1272 #endif]])
1273 m4_ifdef([b4_initial_action],[
1274 m4_pushdef([b4_at_dollar], [m4_define([b4_at_dollar_used])yylloc])dnl
1275 m4_pushdef([b4_dollar_dollar], [m4_define([b4_dollar_dollar_used])yylval])dnl
1276 /* User initialization code. */
1277 b4_user_initial_action
1278 m4_popdef([b4_dollar_dollar])dnl
1279 m4_popdef([b4_at_dollar])])dnl
1280 m4_ifdef([b4_dollar_dollar_used],[[ yyvsp[0] = yylval;
1281 ]])dnl
1282 m4_ifdef([b4_at_dollar_used], [[ yylsp[0] = yylloc;
1283 ]])[
1284 goto yysetstate;
1285
1286 /*------------------------------------------------------------.
1287 | yynewstate -- Push a new state, which is found in yystate. |
1288 `------------------------------------------------------------*/
1289 yynewstate:
1290 /* In all cases, when you get here, the value and location stacks
1291 have just been pushed. So pushing a state here evens the stacks. */
1292 yyssp++;
1293
1294 yysetstate:
1295 *yyssp = yystate;
1296
1297 if (yyss + yystacksize - 1 <= yyssp)
1298 {
1299 /* Get the current used size of the three stacks, in elements. */
1300 YYSIZE_T yysize = yyssp - yyss + 1;
1301
1302 #ifdef yyoverflow
1303 {
1304 /* Give user a chance to reallocate the stack. Use copies of
1305 these so that the &'s don't force the real ones into
1306 memory. */
1307 YYSTYPE *yyvs1 = yyvs;
1308 yytype_int16 *yyss1 = yyss;]b4_locations_if([
1309 YYLTYPE *yyls1 = yyls;])[
1310
1311 /* Each stack pointer address is followed by the size of the
1312 data in use in that stack, in bytes. This used to be a
1313 conditional around just the two extra args, but that might
1314 be undefined if yyoverflow is a macro. */
1315 yyoverflow (YY_("memory exhausted"),
1316 &yyss1, yysize * sizeof (*yyssp),
1317 &yyvs1, yysize * sizeof (*yyvsp),]b4_locations_if([
1318 &yyls1, yysize * sizeof (*yylsp),])[
1319 &yystacksize);
1320 ]b4_locations_if([
1321 yyls = yyls1;])[
1322 yyss = yyss1;
1323 yyvs = yyvs1;
1324 }
1325 #else /* no yyoverflow */
1326 # ifndef YYSTACK_RELOCATE
1327 goto yyexhaustedlab;
1328 # else
1329 /* Extend the stack our own way. */
1330 if (YYMAXDEPTH <= yystacksize)
1331 goto yyexhaustedlab;
1332 yystacksize *= 2;
1333 if (YYMAXDEPTH < yystacksize)
1334 yystacksize = YYMAXDEPTH;
1335
1336 {
1337 yytype_int16 *yyss1 = yyss;
1338 union yyalloc *yyptr =
1339 (union yyalloc *) YYSTACK_ALLOC (YYSTACK_BYTES (yystacksize));
1340 if (! yyptr)
1341 goto yyexhaustedlab;
1342 YYSTACK_RELOCATE (yyss_alloc, yyss);
1343 YYSTACK_RELOCATE (yyvs_alloc, yyvs);]b4_locations_if([
1344 YYSTACK_RELOCATE (yyls_alloc, yyls);])[
1345 # undef YYSTACK_RELOCATE
1346 if (yyss1 != yyssa)
1347 YYSTACK_FREE (yyss1);
1348 }
1349 # endif
1350 #endif /* no yyoverflow */
1351
1352 yyssp = yyss + yysize - 1;
1353 yyvsp = yyvs + yysize - 1;]b4_locations_if([
1354 yylsp = yyls + yysize - 1;])[
1355
1356 YYDPRINTF ((stderr, "Stack size increased to %lu\n",
1357 (unsigned long int) yystacksize));
1358
1359 if (yyss + yystacksize - 1 <= yyssp)
1360 YYABORT;
1361 }
1362
1363 YYDPRINTF ((stderr, "Entering state %d\n", yystate));
1364
1365 if (yystate == YYFINAL)
1366 YYACCEPT;
1367
1368 goto yybackup;
1369
1370 /*-----------.
1371 | yybackup. |
1372 `-----------*/
1373 yybackup:
1374
1375 /* Do appropriate processing given the current state. Read a
1376 lookahead token if we need one and don't already have one. */
1377
1378 /* First try to decide what to do without reference to lookahead token. */
1379 yyn = yypact[yystate];
1380 if (yypact_value_is_default (yyn))
1381 goto yydefault;
1382
1383 /* Not known => get a lookahead token if don't already have one. */
1384
1385 /* YYCHAR is either YYEMPTY or YYEOF or a valid lookahead symbol. */
1386 if (yychar == YYEMPTY)
1387 {]b4_push_if([[
1388 if (!yyps->yynew)
1389 {]b4_use_push_for_pull_if([], [[
1390 YYDPRINTF ((stderr, "Return for a new token:\n"));]])[
1391 yyresult = YYPUSH_MORE;
1392 goto yypushreturn;
1393 }
1394 yyps->yynew = 0;]b4_pure_if([], [[
1395 /* Restoring the pushed token is only necessary for the first
1396 yypush_parse invocation since subsequent invocations don't overwrite
1397 it before jumping to yyread_pushed_token. */
1398 yychar = yypushed_char;
1399 yylval = yypushed_val;]b4_locations_if([[
1400 yylloc = yypushed_loc;]])])[
1401 yyread_pushed_token:]])[
1402 YYDPRINTF ((stderr, "Reading a token: "));]b4_push_if([b4_pure_if([[
1403 yychar = yypushed_char;
1404 if (yypushed_val)
1405 yylval = *yypushed_val;]b4_locations_if([[
1406 if (yypushed_loc)
1407 yylloc = *yypushed_loc;]])])], [[
1408 yychar = YYLEX;]])[
1409 }
1410
1411 if (yychar <= YYEOF)
1412 {
1413 yychar = yytoken = YYEOF;
1414 YYDPRINTF ((stderr, "Now at end of input.\n"));
1415 }
1416 else
1417 {
1418 yytoken = YYTRANSLATE (yychar);
1419 YY_SYMBOL_PRINT ("Next token is", yytoken, &yylval, &yylloc);
1420 }
1421
1422 /* If the proper action on seeing token YYTOKEN is to reduce or to
1423 detect an error, take that action. */
1424 yyn += yytoken;
1425 if (yyn < 0 || YYLAST < yyn || yycheck[yyn] != yytoken)
1426 goto yydefault;
1427 yyn = yytable[yyn];
1428 if (yyn <= 0)
1429 {
1430 if (yytable_value_is_error (yyn))
1431 goto yyerrlab;
1432 yyn = -yyn;
1433 goto yyreduce;
1434 }
1435
1436 /* Count tokens shifted since error; after three, turn off error
1437 status. */
1438 if (yyerrstatus)
1439 yyerrstatus--;
1440
1441 /* Shift the lookahead token. */
1442 YY_SYMBOL_PRINT ("Shifting", yytoken, &yylval, &yylloc);
1443
1444 /* Discard the shifted token. */
1445 yychar = YYEMPTY;
1446
1447 yystate = yyn;
1448 *++yyvsp = yylval;
1449 ]b4_locations_if([ *++yylsp = yylloc;])[
1450 goto yynewstate;
1451
1452
1453 /*-----------------------------------------------------------.
1454 | yydefault -- do the default action for the current state. |
1455 `-----------------------------------------------------------*/
1456 yydefault:
1457 yyn = yydefact[yystate];
1458 if (yyn == 0)
1459 goto yyerrlab;
1460 goto yyreduce;
1461
1462
1463 /*-----------------------------.
1464 | yyreduce -- Do a reduction. |
1465 `-----------------------------*/
1466 yyreduce:
1467 /* yyn is the number of a rule to reduce with. */
1468 yylen = yyr2[yyn];
1469
1470 /* If YYLEN is nonzero, implement the default value of the action:
1471 `$$ = $1'.
1472
1473 Otherwise, the following line sets YYVAL to garbage.
1474 This behavior is undocumented and Bison
1475 users should not rely upon it. Assigning to YYVAL
1476 unconditionally makes the parser a bit smaller, and it avoids a
1477 GCC warning that YYVAL may be used uninitialized. */
1478 yyval = yyvsp[1-yylen];
1479
1480 ]b4_locations_if(
1481 [[ /* Default location. */
1482 YYLLOC_DEFAULT (yyloc, (yylsp - yylen), yylen);]])[
1483 YY_REDUCE_PRINT (yyn);
1484 switch (yyn)
1485 {
1486 ]b4_user_actions[
1487 default: break;
1488 }
1489 YY_SYMBOL_PRINT ("-> $$ =", yyr1[yyn], &yyval, &yyloc);
1490
1491 YYPOPSTACK (yylen);
1492 yylen = 0;
1493 YY_STACK_PRINT (yyss, yyssp);
1494
1495 *++yyvsp = yyval;]b4_locations_if([
1496 *++yylsp = yyloc;])[
1497
1498 /* Now `shift' the result of the reduction. Determine what state
1499 that goes to, based on the state we popped back to and the rule
1500 number reduced by. */
1501
1502 yyn = yyr1[yyn];
1503
1504 yystate = yypgoto[yyn - YYNTOKENS] + *yyssp;
1505 if (0 <= yystate && yystate <= YYLAST && yycheck[yystate] == *yyssp)
1506 yystate = yytable[yystate];
1507 else
1508 yystate = yydefgoto[yyn - YYNTOKENS];
1509
1510 goto yynewstate;
1511
1512
1513 /*------------------------------------.
1514 | yyerrlab -- here on detecting error |
1515 `------------------------------------*/
1516 yyerrlab:
1517 /* If not already recovering from an error, report this error. */
1518 if (!yyerrstatus)
1519 {
1520 ++yynerrs;
1521 #if ! YYERROR_VERBOSE
1522 yyerror (]b4_yyerror_args[YY_("syntax error"));
1523 #else
1524 while (1)
1525 {
1526 int yysyntax_error_status =
1527 yysyntax_error (&yymsg_alloc, &yymsg, yystate, yytoken);
1528 if (yysyntax_error_status == 2 && 0 < yymsg_alloc)
1529 {
1530 if (yymsg != yymsgbuf)
1531 YYSTACK_FREE (yymsg);
1532 yymsg = (char *) YYSTACK_ALLOC (yymsg_alloc);
1533 if (yymsg)
1534 continue;
1535 yymsg = yymsgbuf;
1536 yymsg_alloc = sizeof yymsgbuf;
1537 }
1538 if (yysyntax_error_status == 0)
1539 yyerror (]b4_yyerror_args[yymsg);
1540 else
1541 yyerror (]b4_yyerror_args[YY_("syntax error"));
1542 if (yysyntax_error_status == 2)
1543 goto yyexhaustedlab;
1544 break;
1545 }
1546 #endif
1547 }
1548
1549 ]b4_locations_if([[ yyerror_range[0] = yylloc;]])[
1550
1551 if (yyerrstatus == 3)
1552 {
1553 /* If just tried and failed to reuse lookahead token after an
1554 error, discard it. */
1555
1556 if (yychar <= YYEOF)
1557 {
1558 /* Return failure if at end of input. */
1559 if (yychar == YYEOF)
1560 YYABORT;
1561 }
1562 else
1563 {
1564 yydestruct ("Error: discarding",
1565 yytoken, &yylval]b4_locations_if([, &yylloc])[]b4_user_args[);
1566 yychar = YYEMPTY;
1567 }
1568 }
1569
1570 /* Else will try to reuse lookahead token after shifting the error
1571 token. */
1572 goto yyerrlab1;
1573
1574
1575 /*---------------------------------------------------.
1576 | yyerrorlab -- error raised explicitly by YYERROR. |
1577 `---------------------------------------------------*/
1578 yyerrorlab:
1579
1580 /* Pacify compilers like GCC when the user code never invokes
1581 YYERROR and the label yyerrorlab therefore never appears in user
1582 code. */
1583 if (/*CONSTCOND*/ 0)
1584 goto yyerrorlab;
1585
1586 ]b4_locations_if([[ yyerror_range[0] = yylsp[1-yylen];
1587 ]])[ /* Do not reclaim the symbols of the rule which action triggered
1588 this YYERROR. */
1589 YYPOPSTACK (yylen);
1590 yylen = 0;
1591 YY_STACK_PRINT (yyss, yyssp);
1592 yystate = *yyssp;
1593 goto yyerrlab1;
1594
1595
1596 /*-------------------------------------------------------------.
1597 | yyerrlab1 -- common code for both syntax error and YYERROR. |
1598 `-------------------------------------------------------------*/
1599 yyerrlab1:
1600 yyerrstatus = 3; /* Each real token shifted decrements this. */
1601
1602 for (;;)
1603 {
1604 yyn = yypact[yystate];
1605 if (!yypact_value_is_default (yyn))
1606 {
1607 yyn += YYTERROR;
1608 if (0 <= yyn && yyn <= YYLAST && yycheck[yyn] == YYTERROR)
1609 {
1610 yyn = yytable[yyn];
1611 if (0 < yyn)
1612 break;
1613 }
1614 }
1615
1616 /* Pop the current state because it cannot handle the error token. */
1617 if (yyssp == yyss)
1618 YYABORT;
1619
1620 ]b4_locations_if([[ yyerror_range[0] = *yylsp;]])[
1621 yydestruct ("Error: popping",
1622 yystos[yystate], yyvsp]b4_locations_if([, yylsp])[]b4_user_args[);
1623 YYPOPSTACK (1);
1624 yystate = *yyssp;
1625 YY_STACK_PRINT (yyss, yyssp);
1626 }
1627
1628 *++yyvsp = yylval;
1629 ]b4_locations_if([[
1630 yyerror_range[1] = yylloc;
1631 /* Using YYLLOC is tempting, but would change the location of
1632 the lookahead. YYLOC is available though. */
1633 YYLLOC_DEFAULT (yyloc, (yyerror_range - 1), 2);
1634 *++yylsp = yyloc;]])[
1635
1636 /* Shift the error token. */
1637 YY_SYMBOL_PRINT ("Shifting", yystos[yyn], yyvsp, yylsp);
1638
1639 yystate = yyn;
1640 goto yynewstate;
1641
1642
1643 /*-------------------------------------.
1644 | yyacceptlab -- YYACCEPT comes here. |
1645 `-------------------------------------*/
1646 yyacceptlab:
1647 yyresult = 0;
1648 goto yyreturn;
1649
1650 /*-----------------------------------.
1651 | yyabortlab -- YYABORT comes here. |
1652 `-----------------------------------*/
1653 yyabortlab:
1654 yyresult = 1;
1655 goto yyreturn;
1656
1657 #if !defined(yyoverflow) || YYERROR_VERBOSE
1658 /*-------------------------------------------------.
1659 | yyexhaustedlab -- memory exhaustion comes here. |
1660 `-------------------------------------------------*/
1661 yyexhaustedlab:
1662 yyerror (]b4_yyerror_args[YY_("memory exhausted"));
1663 yyresult = 2;
1664 /* Fall through. */
1665 #endif
1666
1667 yyreturn:
1668 if (yychar != YYEMPTY)
1669 yydestruct ("Cleanup: discarding lookahead",
1670 yytoken, &yylval]b4_locations_if([, &yylloc])[]b4_user_args[);
1671 /* Do not reclaim the symbols of the rule which action triggered
1672 this YYABORT or YYACCEPT. */
1673 YYPOPSTACK (yylen);
1674 YY_STACK_PRINT (yyss, yyssp);
1675 while (yyssp != yyss)
1676 {
1677 yydestruct ("Cleanup: popping",
1678 yystos[*yyssp], yyvsp]b4_locations_if([, yylsp])[]b4_user_args[);
1679 YYPOPSTACK (1);
1680 }
1681 #ifndef yyoverflow
1682 if (yyss != yyssa)
1683 YYSTACK_FREE (yyss);
1684 #endif]b4_push_if([[
1685 yyps->yynew = 1;
1686
1687 yypushreturn:]])[
1688 #if YYERROR_VERBOSE
1689 if (yymsg != yymsgbuf)
1690 YYSTACK_FREE (yymsg);
1691 #endif
1692 /* Make sure YYID is used. */
1693 return YYID (yyresult);
1694 }
1695
1696
1697 ]b4_epilogue
1698 b4_defines_if(
1699 [@output(b4_spec_defines_file@)@
1700 b4_copyright([Skeleton interface for Bison's Yacc-like parsers in C],
1701 [1984, 1989, 1990, 2000, 2001, 2002, 2003, 2004, 2005,
1702 2006, 2007, 2008, 2009])
1703
1704 b4_percent_code_get([[requires]])[]dnl
1705
1706 b4_token_enums_defines(b4_tokens)
1707
1708 [#if ! defined YYSTYPE && ! defined YYSTYPE_IS_DECLARED
1709 ]m4_ifdef([b4_stype],
1710 [[typedef union ]b4_union_name[
1711 {
1712 ]b4_user_stype[
1713 } YYSTYPE;
1714 # define YYSTYPE_IS_TRIVIAL 1]],
1715 [m4_if(b4_tag_seen_flag, 0,
1716 [[typedef int YYSTYPE;
1717 # define YYSTYPE_IS_TRIVIAL 1]])])[
1718 # define yystype YYSTYPE /* obsolescent; will be withdrawn */
1719 # define YYSTYPE_IS_DECLARED 1
1720 #endif
1721
1722 ]b4_pure_if([], [[extern YYSTYPE ]b4_prefix[lval;]])
1723
1724 b4_locations_if(
1725 [#if ! defined YYLTYPE && ! defined YYLTYPE_IS_DECLARED
1726 typedef struct YYLTYPE
1727 {
1728 int first_line;
1729 int first_column;
1730 int last_line;
1731 int last_column;
1732 } YYLTYPE;
1733 # define yyltype YYLTYPE /* obsolescent; will be withdrawn */
1734 # define YYLTYPE_IS_DECLARED 1
1735 # define YYLTYPE_IS_TRIVIAL 1
1736 #endif
1737
1738 ]b4_pure_if([], [[extern YYLTYPE ]b4_prefix[lloc;]])
1739 )dnl b4_locations_if
1740 b4_push_if([[
1741 #ifndef YYPUSH_DECLS
1742 # define YYPUSH_DECLS
1743 struct ]b4_prefix[pstate;
1744 typedef struct ]b4_prefix[pstate ]b4_prefix[pstate;
1745 enum { YYPUSH_MORE = 4 };
1746 ]b4_pull_if([b4_c_function_decl([b4_prefix[parse]], [[int]], b4_parse_param)
1747 ])b4_c_function_decl([b4_prefix[push_parse]], [[int]],
1748 [[b4_prefix[pstate *yyps]], [[yyps]]]b4_pure_if([,
1749 [[[int yypushed_char]], [[yypushed_char]]],
1750 [[[YYSTYPE const *yypushed_val]], [[yypushed_val]]]b4_locations_if([,
1751 [[[YYLTYPE const *yypushed_loc]], [[yypushed_loc]]]])])m4_ifset([b4_parse_param], [,
1752 b4_parse_param]))
1753 b4_pull_if([b4_c_function_decl([b4_prefix[pull_parse]], [[int]],
1754 [[b4_prefix[pstate *yyps]], [[yyps]]]m4_ifset([b4_parse_param], [,
1755 b4_parse_param]))])
1756 b4_c_function_decl([b4_prefix[pstate_new]], [b4_prefix[pstate *]],
1757 [[[void]], []])
1758 b4_c_function_decl([b4_prefix[pstate_delete]], [[void]],
1759 [[b4_prefix[pstate *yyps]], [[yyps]]])[
1760 #endif
1761 ]])
1762 b4_percent_code_get([[provides]])[]dnl
1763 ])dnl b4_defines_if
1764 m4_divert_pop(0)
bison