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