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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 ## --------------------------------------------------------- ##
150 ## Defining symbol actions, e.g., printers and destructors. ##
151 ## --------------------------------------------------------- ##
152
153 # We do want M4 expansion after # for CPP macros.
154 m4_changecom()
155 m4_divert_push(0)dnl
156 @output(b4_parser_file_name@)@
157 b4_copyright([Skeleton implementation for Bison's Yacc-like parsers in C],
158 [1984, 1989, 1990, 2000, 2001, 2002, 2003, 2004, 2005,
159 2006, 2007, 2008, 2009])[
160
161 /* C LALR(1) parser skeleton written by Richard Stallman, by
162 simplifying the original so-called "semantic" parser. */
163
164 /* All symbols defined below should begin with yy or YY, to avoid
165 infringing on user name space. This should be done even for local
166 variables, as they might otherwise be expanded by user macros.
167 There are some unavoidable exceptions within include files to
168 define necessary library symbols; they are noted "INFRINGES ON
169 USER NAME SPACE" below. */
170
171 ]b4_identification
172 b4_percent_code_get([[top]])[]dnl
173 m4_if(b4_prefix, [yy], [],
174 [[/* Substitute the variable and function names. */
175 ]b4_pull_if([[#define yyparse ]b4_prefix[parse
176 ]])b4_push_if([[#define yypush_parse ]b4_prefix[push_parse
177 ]b4_pull_if([[#define yypull_parse ]b4_prefix[pull_parse
178 ]])[#define yypstate_new ]b4_prefix[pstate_new
179 #define yypstate_delete ]b4_prefix[pstate_delete
180 #define yypstate ]b4_prefix[pstate
181 ]])[#define yylex ]b4_prefix[lex
182 #define yyerror ]b4_prefix[error
183 #define yylval ]b4_prefix[lval
184 #define yychar ]b4_prefix[char
185 #define yydebug ]b4_prefix[debug
186 #define yynerrs ]b4_prefix[nerrs
187 ]b4_locations_if([[#define yylloc ]b4_prefix[lloc]])])[
188
189 /* Copy the first part of user declarations. */
190 ]b4_user_pre_prologue[
191
192 /* Enabling traces. */
193 #ifndef YYDEBUG
194 # define YYDEBUG ]b4_debug_flag[
195 #endif
196
197 /* Enabling verbose error messages. */
198 #ifdef YYERROR_VERBOSE
199 # undef YYERROR_VERBOSE
200 # define YYERROR_VERBOSE 1
201 #else
202 # define YYERROR_VERBOSE ]b4_error_verbose_flag[
203 #endif
204
205 /* Enabling the token table. */
206 #ifndef YYTOKEN_TABLE
207 # define YYTOKEN_TABLE ]b4_token_table[
208 #endif
209
210 ]b4_percent_code_get([[requires]])[]dnl
211
212 b4_token_enums_defines(b4_tokens)[
213
214 #if ! defined YYSTYPE && ! defined YYSTYPE_IS_DECLARED
215 ]m4_ifdef([b4_stype],
216 [[typedef union ]b4_union_name[
217 {
218 ]b4_user_stype[
219 } YYSTYPE;
220 # define YYSTYPE_IS_TRIVIAL 1]],
221 [m4_if(b4_tag_seen_flag, 0,
222 [[typedef int YYSTYPE;
223 # define YYSTYPE_IS_TRIVIAL 1]])])[
224 # define yystype YYSTYPE /* obsolescent; will be withdrawn */
225 # define YYSTYPE_IS_DECLARED 1
226 #endif]b4_locations_if([[
227
228 #if ! defined YYLTYPE && ! defined YYLTYPE_IS_DECLARED
229 typedef struct YYLTYPE
230 {
231 int first_line;
232 int first_column;
233 int last_line;
234 int last_column;
235 } YYLTYPE;
236 # define yyltype YYLTYPE /* obsolescent; will be withdrawn */
237 # define YYLTYPE_IS_DECLARED 1
238 # define YYLTYPE_IS_TRIVIAL 1
239 #endif]])b4_push_if([[
240
241 #ifndef YYPUSH_DECLS
242 # define YYPUSH_DECLS
243 struct yypstate;
244 typedef struct yypstate yypstate;
245 enum { YYPUSH_MORE = 4 };
246
247 ]b4_pull_if([b4_c_function_decl([[yyparse]], [[int]], b4_parse_param)
248 ])b4_c_function_decl([[yypush_parse]], [[int]],
249 [[[yypstate *yyps]], [[yyps]]]b4_pure_if([,
250 [[[int yypushed_char]], [[yypushed_char]]],
251 [[[YYSTYPE const *yypushed_val]], [[yypushed_val]]]b4_locations_if([,
252 [[[YYLTYPE const *yypushed_loc]], [[yypushed_loc]]]])])m4_ifset([b4_parse_param], [,
253 b4_parse_param]))
254 b4_pull_if([b4_c_function_decl([[yypull_parse]], [[int]],
255 [[[yypstate *yyps]], [[yyps]]]m4_ifset([b4_parse_param], [,
256 b4_parse_param]))])
257 b4_c_function_decl([[yypstate_new]], [[yypstate *]], [[[void]], []])
258 b4_c_function_decl([[yypstate_delete]], [[void]],
259 [[[yypstate *yyps]], [[yyps]]])[
260 #endif]])
261
262 b4_percent_code_get([[provides]])[]dnl
263
264 [/* Copy the second part of user declarations. */
265 ]b4_user_post_prologue
266 b4_percent_code_get[]dnl
267
268 [#ifdef short
269 # undef short
270 #endif
271
272 #ifdef YYTYPE_UINT8
273 typedef YYTYPE_UINT8 yytype_uint8;
274 #else
275 typedef unsigned char yytype_uint8;
276 #endif
277
278 #ifdef YYTYPE_INT8
279 typedef YYTYPE_INT8 yytype_int8;
280 #elif ]b4_c_modern[
281 typedef signed char yytype_int8;
282 #else
283 typedef short int yytype_int8;
284 #endif
285
286 #ifdef YYTYPE_UINT16
287 typedef YYTYPE_UINT16 yytype_uint16;
288 #else
289 typedef unsigned short int yytype_uint16;
290 #endif
291
292 #ifdef YYTYPE_INT16
293 typedef YYTYPE_INT16 yytype_int16;
294 #else
295 typedef short int yytype_int16;
296 #endif
297
298 #ifndef YYSIZE_T
299 # ifdef __SIZE_TYPE__
300 # define YYSIZE_T __SIZE_TYPE__
301 # elif defined size_t
302 # define YYSIZE_T size_t
303 # elif ! defined YYSIZE_T && ]b4_c_modern[
304 # include <stddef.h> /* INFRINGES ON USER NAME SPACE */
305 # define YYSIZE_T size_t
306 # else
307 # define YYSIZE_T unsigned int
308 # endif
309 #endif
310
311 #define YYSIZE_MAXIMUM ((YYSIZE_T) -1)
312
313 #ifndef YY_
314 # if YYENABLE_NLS
315 # if ENABLE_NLS
316 # include <libintl.h> /* INFRINGES ON USER NAME SPACE */
317 # define YY_(msgid) dgettext ("bison-runtime", msgid)
318 # endif
319 # endif
320 # ifndef YY_
321 # define YY_(msgid) msgid
322 # endif
323 #endif
324
325 /* Suppress unused-variable warnings by "using" E. */
326 #if ! defined lint || defined __GNUC__
327 # define YYUSE(e) ((void) (e))
328 #else
329 # define YYUSE(e) /* empty */
330 #endif
331
332 /* Identity function, used to suppress warnings about constant conditions. */
333 #ifndef lint
334 # define YYID(n) (n)
335 #else
336 ]b4_c_function_def([YYID], [static int], [[int yyi], [yyi]])[
337 {
338 return yyi;
339 }
340 #endif
341
342 #if ! defined yyoverflow || YYERROR_VERBOSE
343
344 ]b4_push_if([],
345 [[/* The parser invokes alloca or malloc; define the necessary symbols. */
346
347 # ifdef YYSTACK_USE_ALLOCA
348 # if YYSTACK_USE_ALLOCA
349 # ifdef __GNUC__
350 # define YYSTACK_ALLOC __builtin_alloca
351 # elif defined __BUILTIN_VA_ARG_INCR
352 # include <alloca.h> /* INFRINGES ON USER NAME SPACE */
353 # elif defined _AIX
354 # define YYSTACK_ALLOC __alloca
355 # elif defined _MSC_VER
356 # include <malloc.h> /* INFRINGES ON USER NAME SPACE */
357 # define alloca _alloca
358 # else
359 # define YYSTACK_ALLOC alloca
360 # if ! defined _ALLOCA_H && ! defined _STDLIB_H && ]b4_c_modern[
361 # include <stdlib.h> /* INFRINGES ON USER NAME SPACE */
362 # ifndef _STDLIB_H
363 # define _STDLIB_H 1
364 # endif
365 # endif
366 # endif
367 # endif
368 # endif
369
370 ]])dnl
371 [# ifdef YYSTACK_ALLOC
372 /* Pacify GCC's `empty if-body' warning. */
373 # define YYSTACK_FREE(Ptr) do { /* empty */; } while (YYID (0))
374 # ifndef YYSTACK_ALLOC_MAXIMUM
375 /* The OS might guarantee only one guard page at the bottom of the stack,
376 and a page size can be as small as 4096 bytes. So we cannot safely
377 invoke alloca (N) if N exceeds 4096. Use a slightly smaller number
378 to allow for a few compiler-allocated temporary stack slots. */
379 # define YYSTACK_ALLOC_MAXIMUM 4032 /* reasonable circa 2006 */
380 # endif
381 # else
382 # define YYSTACK_ALLOC YYMALLOC
383 # define YYSTACK_FREE YYFREE
384 # ifndef YYSTACK_ALLOC_MAXIMUM
385 # define YYSTACK_ALLOC_MAXIMUM YYSIZE_MAXIMUM
386 # endif
387 # if (defined __cplusplus && ! defined _STDLIB_H \
388 && ! ((defined YYMALLOC || defined malloc) \
389 && (defined YYFREE || defined free)))
390 # include <stdlib.h> /* INFRINGES ON USER NAME SPACE */
391 # ifndef _STDLIB_H
392 # define _STDLIB_H 1
393 # endif
394 # endif
395 # ifndef YYMALLOC
396 # define YYMALLOC malloc
397 # if ! defined malloc && ! defined _STDLIB_H && ]b4_c_modern[
398 void *malloc (YYSIZE_T); /* INFRINGES ON USER NAME SPACE */
399 # endif
400 # endif
401 # ifndef YYFREE
402 # define YYFREE free
403 # if ! defined free && ! defined _STDLIB_H && ]b4_c_modern[
404 void free (void *); /* INFRINGES ON USER NAME SPACE */
405 # endif
406 # endif
407 # endif
408 #endif /* ! defined yyoverflow || YYERROR_VERBOSE */
409
410
411 #if (! defined yyoverflow \
412 && (! defined __cplusplus \
413 || (]b4_locations_if([[defined YYLTYPE_IS_TRIVIAL && YYLTYPE_IS_TRIVIAL \
414 && ]])[defined YYSTYPE_IS_TRIVIAL && YYSTYPE_IS_TRIVIAL)))
415
416 /* A type that is properly aligned for any stack member. */
417 union yyalloc
418 {
419 yytype_int16 yyss_alloc;
420 YYSTYPE yyvs_alloc;]b4_locations_if([
421 YYLTYPE yyls_alloc;])[
422 };
423
424 /* The size of the maximum gap between one aligned stack and the next. */
425 # define YYSTACK_GAP_MAXIMUM (sizeof (union yyalloc) - 1)
426
427 /* The size of an array large to enough to hold all stacks, each with
428 N elements. */
429 ]b4_locations_if(
430 [# define YYSTACK_BYTES(N) \
431 ((N) * (sizeof (yytype_int16) + sizeof (YYSTYPE) + sizeof (YYLTYPE)) \
432 + 2 * YYSTACK_GAP_MAXIMUM)],
433 [# define YYSTACK_BYTES(N) \
434 ((N) * (sizeof (yytype_int16) + sizeof (YYSTYPE)) \
435 + YYSTACK_GAP_MAXIMUM)])[
436
437 /* Copy COUNT objects from FROM to TO. The source and destination do
438 not overlap. */
439 # ifndef YYCOPY
440 # if defined __GNUC__ && 1 < __GNUC__
441 # define YYCOPY(To, From, Count) \
442 __builtin_memcpy (To, From, (Count) * sizeof (*(From)))
443 # else
444 # define YYCOPY(To, From, Count) \
445 do \
446 { \
447 YYSIZE_T yyi; \
448 for (yyi = 0; yyi < (Count); yyi++) \
449 (To)[yyi] = (From)[yyi]; \
450 } \
451 while (YYID (0))
452 # endif
453 # endif
454
455 /* Relocate STACK from its old location to the new one. The
456 local variables YYSIZE and YYSTACKSIZE give the old and new number of
457 elements in the stack, and YYPTR gives the new location of the
458 stack. Advance YYPTR to a properly aligned location for the next
459 stack. */
460 # define YYSTACK_RELOCATE(Stack_alloc, Stack) \
461 do \
462 { \
463 YYSIZE_T yynewbytes; \
464 YYCOPY (&yyptr->Stack_alloc, Stack, yysize); \
465 Stack = &yyptr->Stack_alloc; \
466 yynewbytes = yystacksize * sizeof (*Stack) + YYSTACK_GAP_MAXIMUM; \
467 yyptr += yynewbytes / sizeof (*yyptr); \
468 } \
469 while (YYID (0))
470
471 #endif
472
473 /* YYFINAL -- State number of the termination state. */
474 #define YYFINAL ]b4_final_state_number[
475 /* YYLAST -- Last index in YYTABLE. */
476 #define YYLAST ]b4_last[
477
478 /* YYNTOKENS -- Number of terminals. */
479 #define YYNTOKENS ]b4_tokens_number[
480 /* YYNNTS -- Number of nonterminals. */
481 #define YYNNTS ]b4_nterms_number[
482 /* YYNRULES -- Number of rules. */
483 #define YYNRULES ]b4_rules_number[
484 /* YYNRULES -- Number of states. */
485 #define YYNSTATES ]b4_states_number[
486
487 /* YYTRANSLATE(YYLEX) -- Bison symbol number corresponding to YYLEX. */
488 #define YYUNDEFTOK ]b4_undef_token_number[
489 #define YYMAXUTOK ]b4_user_token_number_max[
490
491 #define YYTRANSLATE(YYX) \
492 ((unsigned int) (YYX) <= YYMAXUTOK ? yytranslate[YYX] : YYUNDEFTOK)
493
494 /* YYTRANSLATE[YYLEX] -- Bison symbol number corresponding to YYLEX. */
495 static const ]b4_int_type_for([b4_translate])[ yytranslate[] =
496 {
497 ]b4_translate[
498 };
499
500 #if YYDEBUG
501 /* YYPRHS[YYN] -- Index of the first RHS symbol of rule number YYN in
502 YYRHS. */
503 static const ]b4_int_type_for([b4_prhs])[ yyprhs[] =
504 {
505 ]b4_prhs[
506 };
507
508 /* YYRHS -- A `-1'-separated list of the rules' RHS. */
509 static const ]b4_int_type_for([b4_rhs])[ yyrhs[] =
510 {
511 ]b4_rhs[
512 };
513
514 /* YYRLINE[YYN] -- source line where rule number YYN was defined. */
515 static const ]b4_int_type_for([b4_rline])[ yyrline[] =
516 {
517 ]b4_rline[
518 };
519 #endif
520
521 #if YYDEBUG || YYERROR_VERBOSE || YYTOKEN_TABLE
522 /* YYTNAME[SYMBOL-NUM] -- String name of the symbol SYMBOL-NUM.
523 First, the terminals, then, starting at YYNTOKENS, nonterminals. */
524 static const char *const yytname[] =
525 {
526 ]b4_tname[
527 };
528 #endif
529
530 # ifdef YYPRINT
531 /* YYTOKNUM[YYLEX-NUM] -- Internal token number corresponding to
532 token YYLEX-NUM. */
533 static const ]b4_int_type_for([b4_toknum])[ yytoknum[] =
534 {
535 ]b4_toknum[
536 };
537 # endif
538
539 /* YYR1[YYN] -- Symbol number of symbol that rule YYN derives. */
540 static const ]b4_int_type_for([b4_r1])[ yyr1[] =
541 {
542 ]b4_r1[
543 };
544
545 /* YYR2[YYN] -- Number of symbols composing right hand side of rule YYN. */
546 static const ]b4_int_type_for([b4_r2])[ yyr2[] =
547 {
548 ]b4_r2[
549 };
550
551 /* YYDEFACT[STATE-NAME] -- Default reduction number in state STATE-NUM.
552 Performed when YYTABLE doesn't specify something else to do. Zero
553 means the default is an error. */
554 static const ]b4_int_type_for([b4_defact])[ yydefact[] =
555 {
556 ]b4_defact[
557 };
558
559 /* YYDEFGOTO[NTERM-NUM]. */
560 static const ]b4_int_type_for([b4_defgoto])[ yydefgoto[] =
561 {
562 ]b4_defgoto[
563 };
564
565 /* YYPACT[STATE-NUM] -- Index in YYTABLE of the portion describing
566 STATE-NUM. */
567 #define YYPACT_NINF ]b4_pact_ninf[
568 static const ]b4_int_type_for([b4_pact])[ yypact[] =
569 {
570 ]b4_pact[
571 };
572
573 /* YYPGOTO[NTERM-NUM]. */
574 static const ]b4_int_type_for([b4_pgoto])[ yypgoto[] =
575 {
576 ]b4_pgoto[
577 };
578
579 /* YYTABLE[YYPACT[STATE-NUM]]. What to do in state STATE-NUM. If
580 positive, shift that token. If negative, reduce the rule which
581 number is the opposite. If YYTABLE_NINF, syntax error. */
582 #define YYTABLE_NINF ]b4_table_ninf[
583 static const ]b4_int_type_for([b4_table])[ yytable[] =
584 {
585 ]b4_table[
586 };
587
588 #define yypact_value_is_default(yystate) \
589 ]b4_table_value_equals([[pact]], [[yystate]], [b4_pact_ninf])[
590
591 #define yytable_value_is_error(yytable_value) \
592 ]b4_table_value_equals([[table]], [[yytable_value]], [b4_table_ninf])[
593
594 static const ]b4_int_type_for([b4_check])[ yycheck[] =
595 {
596 ]b4_check[
597 };
598
599 /* YYSTOS[STATE-NUM] -- The (internal number of the) accessing
600 symbol of state STATE-NUM. */
601 static const ]b4_int_type_for([b4_stos])[ yystos[] =
602 {
603 ]b4_stos[
604 };
605
606 #define yyerrok (yyerrstatus = 0)
607 #define yyclearin (yychar = YYEMPTY)
608 #define YYEMPTY (-2)
609 #define YYEOF 0
610
611 #define YYACCEPT goto yyacceptlab
612 #define YYABORT goto yyabortlab
613 #define YYERROR goto yyerrorlab
614
615
616 /* Like YYERROR except do call yyerror. This remains here temporarily
617 to ease the transition to the new meaning of YYERROR, for GCC.
618 Once GCC version 2 has supplanted version 1, this can go. */
619
620 #define YYFAIL goto yyerrlab
621
622 #define YYRECOVERING() (!!yyerrstatus)
623
624 #define YYBACKUP(Token, Value) \
625 do \
626 if (yychar == YYEMPTY && yylen == 1) \
627 { \
628 yychar = (Token); \
629 yylval = (Value); \
630 yytoken = YYTRANSLATE (yychar); \
631 YYPOPSTACK (1); \
632 goto yybackup; \
633 } \
634 else \
635 { \
636 yyerror (]b4_yyerror_args[YY_("syntax error: cannot back up")); \
637 YYERROR; \
638 } \
639 while (YYID (0))
640
641
642 #define YYTERROR 1
643 #define YYERRCODE 256
644
645
646 /* YYLLOC_DEFAULT -- Set CURRENT to span from RHS[1] to RHS[N].
647 If N is 0, then set CURRENT to the empty location which ends
648 the previous symbol: RHS[0] (always defined). */
649
650 #define YYRHSLOC(Rhs, K) ((Rhs)[K])
651 #ifndef YYLLOC_DEFAULT
652 # define YYLLOC_DEFAULT(Current, Rhs, N) \
653 do \
654 if (YYID (N)) \
655 { \
656 (Current).first_line = YYRHSLOC (Rhs, 1).first_line; \
657 (Current).first_column = YYRHSLOC (Rhs, 1).first_column; \
658 (Current).last_line = YYRHSLOC (Rhs, N).last_line; \
659 (Current).last_column = YYRHSLOC (Rhs, N).last_column; \
660 } \
661 else \
662 { \
663 (Current).first_line = (Current).last_line = \
664 YYRHSLOC (Rhs, 0).last_line; \
665 (Current).first_column = (Current).last_column = \
666 YYRHSLOC (Rhs, 0).last_column; \
667 } \
668 while (YYID (0))
669 #endif
670
671
672 /* YY_LOCATION_PRINT -- Print the location on the stream.
673 This macro was not mandated originally: define only if we know
674 we won't break user code: when these are the locations we know. */
675
676 #ifndef YY_LOCATION_PRINT
677 # if YYLTYPE_IS_TRIVIAL
678 # define YY_LOCATION_PRINT(File, Loc) \
679 fprintf (File, "%d.%d-%d.%d", \
680 (Loc).first_line, (Loc).first_column, \
681 (Loc).last_line, (Loc).last_column)
682 # else
683 # define YY_LOCATION_PRINT(File, Loc) ((void) 0)
684 # endif
685 #endif
686
687
688 /* YYLEX -- calling `yylex' with the right arguments. */
689
690 #ifdef YYLEX_PARAM
691 # define YYLEX yylex (]b4_pure_if([&yylval[]b4_locations_if([, &yylloc]), ])[YYLEX_PARAM)
692 #else
693 # define YYLEX ]b4_c_function_call([yylex], [int], b4_lex_param)[
694 #endif
695
696 /* Enable debugging if requested. */
697 #if YYDEBUG
698
699 # ifndef YYFPRINTF
700 # include <stdio.h> /* INFRINGES ON USER NAME SPACE */
701 # define YYFPRINTF fprintf
702 # endif
703
704 # define YYDPRINTF(Args) \
705 do { \
706 if (yydebug) \
707 YYFPRINTF Args; \
708 } while (YYID (0))
709
710 # define YY_SYMBOL_PRINT(Title, Type, Value, Location) \
711 do { \
712 if (yydebug) \
713 { \
714 YYFPRINTF (stderr, "%s ", Title); \
715 yy_symbol_print (stderr, \
716 Type, Value]b4_locations_if([, Location])[]b4_user_args[); \
717 YYFPRINTF (stderr, "\n"); \
718 } \
719 } while (YYID (0))
720
721 ]b4_yy_symbol_print_generate([b4_c_function_def])[
722
723 /*------------------------------------------------------------------.
724 | yy_stack_print -- Print the state stack from its BOTTOM up to its |
725 | TOP (included). |
726 `------------------------------------------------------------------*/
727
728 ]b4_c_function_def([yy_stack_print], [static void],
729 [[yytype_int16 *yybottom], [yybottom]],
730 [[yytype_int16 *yytop], [yytop]])[
731 {
732 YYFPRINTF (stderr, "Stack now");
733 for (; yybottom <= yytop; yybottom++)
734 {
735 int yybot = *yybottom;
736 YYFPRINTF (stderr, " %d", yybot);
737 }
738 YYFPRINTF (stderr, "\n");
739 }
740
741 # define YY_STACK_PRINT(Bottom, Top) \
742 do { \
743 if (yydebug) \
744 yy_stack_print ((Bottom), (Top)); \
745 } while (YYID (0))
746
747
748 /*------------------------------------------------.
749 | Report that the YYRULE is going to be reduced. |
750 `------------------------------------------------*/
751
752 ]b4_c_function_def([yy_reduce_print], [static void],
753 [[YYSTYPE *yyvsp], [yyvsp]],
754 b4_locations_if([[[YYLTYPE *yylsp], [yylsp]],
755 ])[[int yyrule], [yyrule]]m4_ifset([b4_parse_param], [,
756 b4_parse_param]))[
757 {
758 int yynrhs = yyr2[yyrule];
759 int yyi;
760 unsigned long int yylno = yyrline[yyrule];
761 YYFPRINTF (stderr, "Reducing stack by rule %d (line %lu):\n",
762 yyrule - 1, yylno);
763 /* The symbols being reduced. */
764 for (yyi = 0; yyi < yynrhs; yyi++)
765 {
766 YYFPRINTF (stderr, " $%d = ", yyi + 1);
767 yy_symbol_print (stderr, yyrhs[yyprhs[yyrule] + yyi],
768 &]b4_rhs_value(yynrhs, yyi + 1)[
769 ]b4_locations_if([, &]b4_rhs_location(yynrhs, yyi + 1))[]dnl
770 b4_user_args[);
771 YYFPRINTF (stderr, "\n");
772 }
773 }
774
775 # define YY_REDUCE_PRINT(Rule) \
776 do { \
777 if (yydebug) \
778 yy_reduce_print (yyvsp, ]b4_locations_if([yylsp, ])[Rule]b4_user_args[); \
779 } while (YYID (0))
780
781 /* Nonzero means print parse trace. It is left uninitialized so that
782 multiple parsers can coexist. */
783 int yydebug;
784 #else /* !YYDEBUG */
785 # define YYDPRINTF(Args)
786 # define YY_SYMBOL_PRINT(Title, Type, Value, Location)
787 # define YY_STACK_PRINT(Bottom, Top)
788 # define YY_REDUCE_PRINT(Rule)
789 #endif /* !YYDEBUG */
790
791
792 /* YYINITDEPTH -- initial size of the parser's stacks. */
793 #ifndef YYINITDEPTH
794 # define YYINITDEPTH ]b4_stack_depth_init[
795 #endif
796
797 /* YYMAXDEPTH -- maximum size the stacks can grow to (effective only
798 if the built-in stack extension method is used).
799
800 Do not make this value too large; the results are undefined if
801 YYSTACK_ALLOC_MAXIMUM < YYSTACK_BYTES (YYMAXDEPTH)
802 evaluated with infinite-precision integer arithmetic. */
803
804 #ifndef YYMAXDEPTH
805 # define YYMAXDEPTH ]b4_stack_depth_max[
806 #endif
807
808 \f
809
810 #if YYERROR_VERBOSE
811
812 # ifndef yystrlen
813 # if defined __GLIBC__ && defined _STRING_H
814 # define yystrlen strlen
815 # else
816 /* Return the length of YYSTR. */
817 ]b4_c_function_def([yystrlen], [static YYSIZE_T],
818 [[const char *yystr], [yystr]])[
819 {
820 YYSIZE_T yylen;
821 for (yylen = 0; yystr[yylen]; yylen++)
822 continue;
823 return yylen;
824 }
825 # endif
826 # endif
827
828 # ifndef yystpcpy
829 # if defined __GLIBC__ && defined _STRING_H && defined _GNU_SOURCE
830 # define yystpcpy stpcpy
831 # else
832 /* Copy YYSRC to YYDEST, returning the address of the terminating '\0' in
833 YYDEST. */
834 ]b4_c_function_def([yystpcpy], [static char *],
835 [[char *yydest], [yydest]], [[const char *yysrc], [yysrc]])[
836 {
837 char *yyd = yydest;
838 const char *yys = yysrc;
839
840 while ((*yyd++ = *yys++) != '\0')
841 continue;
842
843 return yyd - 1;
844 }
845 # endif
846 # endif
847
848 # ifndef yytnamerr
849 /* Copy to YYRES the contents of YYSTR after stripping away unnecessary
850 quotes and backslashes, so that it's suitable for yyerror. The
851 heuristic is that double-quoting is unnecessary unless the string
852 contains an apostrophe, a comma, or backslash (other than
853 backslash-backslash). YYSTR is taken from yytname. If YYRES is
854 null, do not copy; instead, return the length of what the result
855 would have been. */
856 static YYSIZE_T
857 yytnamerr (char *yyres, const char *yystr)
858 {
859 if (*yystr == '"')
860 {
861 YYSIZE_T yyn = 0;
862 char const *yyp = yystr;
863
864 for (;;)
865 switch (*++yyp)
866 {
867 case '\'':
868 case ',':
869 goto do_not_strip_quotes;
870
871 case '\\':
872 if (*++yyp != '\\')
873 goto do_not_strip_quotes;
874 /* Fall through. */
875 default:
876 if (yyres)
877 yyres[yyn] = *yyp;
878 yyn++;
879 break;
880
881 case '"':
882 if (yyres)
883 yyres[yyn] = '\0';
884 return yyn;
885 }
886 do_not_strip_quotes: ;
887 }
888
889 if (! yyres)
890 return yystrlen (yystr);
891
892 return yystpcpy (yyres, yystr) - yyres;
893 }
894 # endif
895
896 /* Copy into YYRESULT an error message about the unexpected token
897 YYCHAR while in state YYSTATE. Return the number of bytes copied,
898 including the terminating null byte. If YYRESULT is null, do not
899 copy anything; just return the number of bytes that would be
900 copied. As a special case, return 0 if an ordinary "syntax error"
901 message will do. Return YYSIZE_MAXIMUM if overflow occurs during
902 size calculation. */
903 static YYSIZE_T
904 yysyntax_error (char *yyresult, int yystate, int yychar)
905 {
906 int yyn = yypact[yystate];
907
908 if (! (YYPACT_NINF < yyn && yyn <= YYLAST))
909 return 0;
910 else
911 {
912 int yytype = YYTRANSLATE (yychar);
913 YYSIZE_T yysize0 = yytnamerr (0, yytname[yytype]);
914 YYSIZE_T yysize = yysize0;
915 YYSIZE_T yysize1;
916 int yysize_overflow = 0;
917 enum { YYERROR_VERBOSE_ARGS_MAXIMUM = 5 };
918 char const *yyarg[YYERROR_VERBOSE_ARGS_MAXIMUM];
919 int yyx;
920
921 # if 0
922 /* This is so xgettext sees the translatable formats that are
923 constructed on the fly. */
924 YY_("syntax error, unexpected %s");
925 YY_("syntax error, unexpected %s, expecting %s");
926 YY_("syntax error, unexpected %s, expecting %s or %s");
927 YY_("syntax error, unexpected %s, expecting %s or %s or %s");
928 YY_("syntax error, unexpected %s, expecting %s or %s or %s or %s");
929 # endif
930 char *yyfmt;
931 char const *yyf;
932 static char const yyunexpected[] = "syntax error, unexpected %s";
933 static char const yyexpecting[] = ", expecting %s";
934 static char const yyor[] = " or %s";
935 char yyformat[sizeof yyunexpected
936 + sizeof yyexpecting - 1
937 + ((YYERROR_VERBOSE_ARGS_MAXIMUM - 2)
938 * (sizeof yyor - 1))];
939 char const *yyprefix = yyexpecting;
940
941 /* Start YYX at -YYN if negative to avoid negative indexes in
942 YYCHECK. In other words, skip the first -YYN actions for this
943 state because they are default actions. */
944 int yyxbegin = yyn < 0 ? -yyn : 0;
945
946 /* Stay within bounds of both yycheck and yytname. */
947 int yychecklim = YYLAST - yyn + 1;
948 int yyxend = yychecklim < YYNTOKENS ? yychecklim : YYNTOKENS;
949 int yycount = 1;
950
951 yyarg[0] = yytname[yytype];
952 yyfmt = yystpcpy (yyformat, yyunexpected);
953
954 for (yyx = yyxbegin; yyx < yyxend; ++yyx)
955 if (yycheck[yyx + yyn] == yyx && yyx != YYTERROR
956 && !yytable_value_is_error (yytable[yyx + yyn]))
957 {
958 if (yycount == YYERROR_VERBOSE_ARGS_MAXIMUM)
959 {
960 yycount = 1;
961 yysize = yysize0;
962 yyformat[sizeof yyunexpected - 1] = '\0';
963 break;
964 }
965 yyarg[yycount++] = yytname[yyx];
966 yysize1 = yysize + yytnamerr (0, yytname[yyx]);
967 yysize_overflow |= (yysize1 < yysize);
968 yysize = yysize1;
969 yyfmt = yystpcpy (yyfmt, yyprefix);
970 yyprefix = yyor;
971 }
972
973 yyf = YY_(yyformat);
974 yysize1 = yysize + yystrlen (yyf);
975 yysize_overflow |= (yysize1 < yysize);
976 yysize = yysize1;
977
978 if (yysize_overflow)
979 return YYSIZE_MAXIMUM;
980
981 if (yyresult)
982 {
983 /* Avoid sprintf, as that infringes on the user's name space.
984 Don't have undefined behavior even if the translation
985 produced a string with the wrong number of "%s"s. */
986 char *yyp = yyresult;
987 int yyi = 0;
988 while ((*yyp = *yyf) != '\0')
989 {
990 if (*yyp == '%' && yyf[1] == 's' && yyi < yycount)
991 {
992 yyp += yytnamerr (yyp, yyarg[yyi++]);
993 yyf += 2;
994 }
995 else
996 {
997 yyp++;
998 yyf++;
999 }
1000 }
1001 }
1002 return yysize;
1003 }
1004 }
1005 #endif /* YYERROR_VERBOSE */
1006 \f
1007
1008 ]b4_yydestruct_generate([b4_c_function_def])[
1009
1010 ]b4_push_if([],
1011 [[/* Prevent warnings from -Wmissing-prototypes. */
1012 #ifdef YYPARSE_PARAM
1013 ]b4_c_function_decl([yyparse], [int],
1014 [[void *YYPARSE_PARAM], [YYPARSE_PARAM]])[
1015 #else /* ! YYPARSE_PARAM */
1016 ]b4_c_function_decl([yyparse], [int], b4_parse_param)[
1017 #endif /* ! YYPARSE_PARAM */]])
1018
1019 m4_divert_push([KILL])# ======================== M4 code.
1020 # b4_declare_scanner_communication_variables
1021 # ------------------------------------------
1022 # Declare the variables that are global, or local to YYPARSE if
1023 # pure-parser.
1024 m4_define([b4_declare_scanner_communication_variables],
1025 [[/* The lookahead symbol. */
1026 int yychar;
1027
1028 /* The semantic value of the lookahead symbol. */
1029 YYSTYPE yylval;
1030 ]b4_locations_if([[
1031 /* Location data for the lookahead symbol. */
1032 YYLTYPE yylloc;
1033 ]])b4_pure_if([], [[
1034 /* Number of syntax errors so far. */
1035 int yynerrs;
1036 ]])])
1037
1038 # b4_declare_parser_state_variables
1039 # ---------------------------------
1040 # Declare all the variables that are needed to maintain the parser state
1041 # between calls to yypush_parse.
1042 m4_define([b4_declare_parser_state_variables],
1043 [b4_pure_if([[ /* Number of syntax errors so far. */
1044 int yynerrs;
1045 ]])[
1046 int yystate;
1047 /* Number of tokens to shift before error messages enabled. */
1048 int yyerrstatus;
1049
1050 /* The stacks and their tools:
1051 `yyss': related to states.
1052 `yyvs': related to semantic values.]b4_locations_if([[
1053 `yyls': related to locations.]])[
1054
1055 Refer to the stacks thru separate pointers, to allow yyoverflow
1056 to reallocate them elsewhere. */
1057
1058 /* The state stack. */
1059 yytype_int16 yyssa[YYINITDEPTH];
1060 yytype_int16 *yyss;
1061 yytype_int16 *yyssp;
1062
1063 /* The semantic value stack. */
1064 YYSTYPE yyvsa[YYINITDEPTH];
1065 YYSTYPE *yyvs;
1066 YYSTYPE *yyvsp;
1067 ]b4_locations_if([[
1068 /* The location stack. */
1069 YYLTYPE yylsa[YYINITDEPTH];
1070 YYLTYPE *yyls;
1071 YYLTYPE *yylsp;
1072
1073 /* The locations where the error started and ended. */
1074 YYLTYPE yyerror_range[2];
1075 ]])[
1076 YYSIZE_T yystacksize;
1077 ]])
1078
1079 m4_divert_pop([KILL])dnl# ====================== End of M4 code.
1080
1081 b4_pure_if([], [b4_declare_scanner_communication_variables])
1082
1083 b4_push_if(
1084 [[struct yypstate
1085 {
1086 ]b4_declare_parser_state_variables[
1087 /* Used to determine if this is the first time this instance has
1088 been used. */
1089 int yynew;
1090 };]b4_pure_if([], [[
1091
1092 static char yypstate_allocated = 0;]])b4_pull_if([
1093
1094 b4_c_function_def([[yyparse]], [[int]], b4_parse_param)[
1095 {
1096 return yypull_parse (0]m4_ifset([b4_parse_param],
1097 [[, ]b4_c_args(b4_parse_param)])[);
1098 }
1099
1100 ]b4_c_function_def([[yypull_parse]], [[int]],
1101 [[[yypstate *yyps]], [[yyps]]]m4_ifset([b4_parse_param], [,
1102 b4_parse_param]))[
1103 {
1104 int yystatus;
1105 yypstate *yyps_local;]b4_pure_if([[
1106 int yychar;
1107 YYSTYPE yylval;]b4_locations_if([[
1108 YYLTYPE yylloc;]])])[
1109 if (yyps == 0)
1110 {
1111 yyps_local = yypstate_new ();
1112 if (!yyps_local)
1113 {]b4_pure_if([[
1114 yyerror (]b4_yyerror_args[YY_("memory exhausted"));]], [[
1115 if (!yypstate_allocated)
1116 yyerror (]b4_yyerror_args[YY_("memory exhausted"));]])[
1117 return 2;
1118 }
1119 }
1120 else
1121 yyps_local = yyps;
1122 do {
1123 yychar = YYLEX;
1124 yystatus =
1125 yypush_parse (yyps_local]b4_pure_if([[, yychar, &yylval]b4_locations_if([[, &yylloc]])])m4_ifset([b4_parse_param], [, b4_c_args(b4_parse_param)])[);
1126 } while (yystatus == YYPUSH_MORE);
1127 if (yyps == 0)
1128 yypstate_delete (yyps_local);
1129 return yystatus;
1130 }]])[
1131
1132 /* Initialize the parser data structure. */
1133 ]b4_c_function_def([[yypstate_new]], [[yypstate *]])[
1134 {
1135 yypstate *yyps;]b4_pure_if([], [[
1136 if (yypstate_allocated)
1137 return 0;]])[
1138 yyps = (yypstate *) malloc (sizeof *yyps);
1139 if (!yyps)
1140 return 0;
1141 yyps->yynew = 1;]b4_pure_if([], [[
1142 yypstate_allocated = 1;]])[
1143 return yyps;
1144 }
1145
1146 ]b4_c_function_def([[yypstate_delete]], [[void]],
1147 [[[yypstate *yyps]], [[yyps]]])[
1148 {
1149 #ifndef yyoverflow
1150 /* If the stack was reallocated but the parse did not complete, then the
1151 stack still needs to be freed. */
1152 if (!yyps->yynew && yyps->yyss != yyps->yyssa)
1153 YYSTACK_FREE (yyps->yyss);
1154 #endif
1155 free (yyps);]b4_pure_if([], [[
1156 yypstate_allocated = 0;]])[
1157 }
1158
1159 ]b4_pure_if([[#define ]b4_prefix[nerrs yyps->]b4_prefix[nerrs
1160 ]])[#define yystate yyps->yystate
1161 #define yyerrstatus yyps->yyerrstatus
1162 #define yyssa yyps->yyssa
1163 #define yyss yyps->yyss
1164 #define yyssp yyps->yyssp
1165 #define yyvsa yyps->yyvsa
1166 #define yyvs yyps->yyvs
1167 #define yyvsp yyps->yyvsp
1168 ]b4_locations_if([[#define yylsa yyps->yylsa
1169 #define yyls yyps->yyls
1170 #define yylsp yyps->yylsp
1171 #define yyerror_range yyps->yyerror_range
1172 ]])[#define yystacksize yyps->yystacksize
1173 ]])[
1174 /*-------------------------.
1175 | yyparse or yypush_parse. |
1176 `-------------------------*/
1177 ]b4_push_if([
1178 b4_c_function_def([[yypush_parse]], [[int]],
1179 [[[yypstate *yyps]], [[yyps]]]b4_pure_if([,
1180 [[[int yypushed_char]], [[yypushed_char]]],
1181 [[[YYSTYPE const *yypushed_val]], [[yypushed_val]]]b4_locations_if([,
1182 [[[YYLTYPE const *yypushed_loc]], [[yypushed_loc]]]])])m4_ifset([b4_parse_param], [,
1183 b4_parse_param]))], [
1184 #ifdef YYPARSE_PARAM
1185 b4_c_function_def([yyparse], [int], [[void *YYPARSE_PARAM], [YYPARSE_PARAM]])
1186 #else /* ! YYPARSE_PARAM */
1187 b4_c_function_def([yyparse], [int], b4_parse_param)
1188 #endif])[
1189 {
1190 ]b4_pure_if([b4_declare_scanner_communication_variables])
1191 b4_push_if([b4_pure_if([], [[ int yypushed_char = yychar;
1192 YYSTYPE yypushed_val = yylval;
1193 ]b4_locations_if([[YYLTYPE yypushed_loc = yylloc;
1194 ]])])],
1195 [b4_declare_parser_state_variables])[
1196 int yyn;
1197 int yyresult;
1198 /* 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
1671 ]b4_push_if([[ 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