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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 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 [b4_symbol_value(yyval, [$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 [b4_symbol_value([yyvsp@{($2) - ($1)@}], [$3])])
126
127
128
129 ## ----------- ##
130 ## Locations. ##
131 ## ----------- ##
132
133 # b4_lhs_location()
134 # -----------------
135 # Expansion of @$.
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],dnl '
158 [1984, 1989, 1990, 2000, 2001, 2002, 2003, 2004, 2005, 2006])[
159
160 /* C LALR(1) parser skeleton written by Richard Stallman, by
161 simplifying the original so-called "semantic" parser. */
162
163 /* All symbols defined below should begin with yy or YY, to avoid
164 infringing on user name space. This should be done even for local
165 variables, as they might otherwise be expanded by user macros.
166 There are some unavoidable exceptions within include files to
167 define necessary library symbols; they are noted "INFRINGES ON
168 USER NAME SPACE" below. */
169
170 ]b4_identification
171 b4_percent_code_get([[top]])[]dnl
172 m4_if(b4_prefix, [yy], [],
173 [[/* Substitute the variable and function names. */
174 ]b4_pull_if([[#define yyparse ]b4_prefix[parse
175 ]])b4_push_if([[#define yypush_parse ]b4_prefix[push_parse
176 ]b4_pull_if([[#define yypull_parse ]b4_prefix[pull_parse
177 ]])[#define yypstate_new ]b4_prefix[pstate_new
178 #define yypstate_delete ]b4_prefix[pstate_delete
179 #define yypstate ]b4_prefix[pstate
180 ]])[#define yylex ]b4_prefix[lex
181 #define yyerror ]b4_prefix[error
182 #define yylval ]b4_prefix[lval
183 #define yychar ]b4_prefix[char
184 #define yydebug ]b4_prefix[debug
185 #define yynerrs ]b4_prefix[nerrs
186 ]b4_locations_if([[#define yylloc ]b4_prefix[lloc]])])[
187
188 /* Copy the first part of user declarations. */
189 ]b4_user_pre_prologue[
190
191 /* Enabling traces. */
192 #ifndef YYDEBUG
193 # define YYDEBUG ]b4_debug_flag[
194 #endif
195
196 /* Enabling verbose error messages. */
197 #ifdef YYERROR_VERBOSE
198 # undef YYERROR_VERBOSE
199 # define YYERROR_VERBOSE 1
200 #else
201 # define YYERROR_VERBOSE ]b4_error_verbose_flag[
202 #endif
203
204 /* Enabling the token table. */
205 #ifndef YYTOKEN_TABLE
206 # define YYTOKEN_TABLE ]b4_token_table[
207 #endif
208
209 ]b4_percent_code_get([[requires]])[]dnl
210
211 b4_token_enums_defines(b4_tokens)[
212
213 #if ! defined YYSTYPE && ! defined YYSTYPE_IS_DECLARED
214 ]m4_ifdef([b4_stype],
215 [[typedef union ]b4_union_name[
216 {
217 ]b4_user_stype[
218 } YYSTYPE;
219 # define YYSTYPE_IS_TRIVIAL 1]],
220 [m4_if(b4_tag_seen_flag, 0,
221 [[typedef int YYSTYPE;
222 # define YYSTYPE_IS_TRIVIAL 1]])])[
223 # define yystype YYSTYPE /* obsolescent; will be withdrawn */
224 # define YYSTYPE_IS_DECLARED 1
225 #endif]b4_locations_if([[
226
227 #if ! defined YYLTYPE && ! defined YYLTYPE_IS_DECLARED
228 typedef struct YYLTYPE
229 {
230 int first_line;
231 int first_column;
232 int last_line;
233 int last_column;
234 } YYLTYPE;
235 # define yyltype YYLTYPE /* obsolescent; will be withdrawn */
236 # define YYLTYPE_IS_DECLARED 1
237 # define YYLTYPE_IS_TRIVIAL 1
238 #endif]])b4_push_if([[
239
240 #ifndef YYPUSH_DECLS
241 # define YYPUSH_DECLS
242 struct yypstate;
243 typedef struct yypstate yypstate;
244 enum { YYPUSH_MORE = 4 };
245
246 ]b4_pull_if([b4_c_function_decl([[yyparse]], [[int]], b4_parse_param)
247 ])b4_c_function_decl([[yypush_parse]], [[int]],
248 [[[yypstate *yyps]], [[yyps]]]b4_pure_if([,
249 [[[int yypushed_char]], [[yypushed_char]]],
250 [[[YYSTYPE const *yypushed_val]], [[yypushed_val]]]b4_locations_if([,
251 [[[YYLTYPE const *yypushed_loc]], [[yypushed_loc]]]])])m4_ifset([b4_parse_param], [,
252 b4_parse_param]))
253 b4_pull_if([b4_c_function_decl([[yypull_parse]], [[int]],
254 [[[yypstate *yyps]], [[yyps]]]m4_ifset([b4_parse_param], [,
255 b4_parse_param]))])
256 b4_c_function_decl([[yypstate_new]], [[yypstate *]], [[[void]], []])
257 b4_c_function_decl([[yypstate_delete]], [[void]],
258 [[[yypstate *yyps]], [[yyps]]])[
259 #endif]])
260
261 b4_percent_code_get([[provides]])[]dnl
262
263 [/* Copy the second part of user declarations. */
264 ]b4_user_post_prologue
265 b4_percent_code_get[]dnl
266
267 [#ifdef short
268 # undef short
269 #endif
270
271 #ifdef YYTYPE_UINT8
272 typedef YYTYPE_UINT8 yytype_uint8;
273 #else
274 typedef unsigned char yytype_uint8;
275 #endif
276
277 #ifdef YYTYPE_INT8
278 typedef YYTYPE_INT8 yytype_int8;
279 #elif ]b4_c_modern[
280 typedef signed char yytype_int8;
281 #else
282 typedef short int yytype_int8;
283 #endif
284
285 #ifdef YYTYPE_UINT16
286 typedef YYTYPE_UINT16 yytype_uint16;
287 #else
288 typedef unsigned short int yytype_uint16;
289 #endif
290
291 #ifdef YYTYPE_INT16
292 typedef YYTYPE_INT16 yytype_int16;
293 #else
294 typedef short int yytype_int16;
295 #endif
296
297 #ifndef YYSIZE_T
298 # ifdef __SIZE_TYPE__
299 # define YYSIZE_T __SIZE_TYPE__
300 # elif defined size_t
301 # define YYSIZE_T size_t
302 # elif ! defined YYSIZE_T && ]b4_c_modern[
303 # include <stddef.h> /* INFRINGES ON USER NAME SPACE */
304 # define YYSIZE_T size_t
305 # else
306 # define YYSIZE_T unsigned int
307 # endif
308 #endif
309
310 #define YYSIZE_MAXIMUM ((YYSIZE_T) -1)
311
312 #ifndef YY_
313 # if YYENABLE_NLS
314 # if ENABLE_NLS
315 # include <libintl.h> /* INFRINGES ON USER NAME SPACE */
316 # define YY_(msgid) dgettext ("bison-runtime", msgid)
317 # endif
318 # endif
319 # ifndef YY_
320 # define YY_(msgid) msgid
321 # endif
322 #endif
323
324 /* Suppress unused-variable warnings by "using" E. */
325 #if ! defined lint || defined __GNUC__
326 # define YYUSE(e) ((void) (e))
327 #else
328 # define YYUSE(e) /* empty */
329 #endif
330
331 /* Identity function, used to suppress warnings about constant conditions. */
332 #ifndef lint
333 # define YYID(n) (n)
334 #else
335 ]b4_c_function_def([YYID], [static int], [[int yyi], [yyi]])[
336 {
337 return yyi;
338 }
339 #endif
340
341 #if ! defined yyoverflow || YYERROR_VERBOSE
342
343 ]b4_push_if([],
344 [[/* The parser invokes alloca or malloc; define the necessary symbols. */
345
346 # ifdef YYSTACK_USE_ALLOCA
347 # if YYSTACK_USE_ALLOCA
348 # ifdef __GNUC__
349 # define YYSTACK_ALLOC __builtin_alloca
350 # elif defined __BUILTIN_VA_ARG_INCR
351 # include <alloca.h> /* INFRINGES ON USER NAME SPACE */
352 # elif defined _AIX
353 # define YYSTACK_ALLOC __alloca
354 # elif defined _MSC_VER
355 # include <malloc.h> /* INFRINGES ON USER NAME SPACE */
356 # define alloca _alloca
357 # else
358 # define YYSTACK_ALLOC alloca
359 # if ! defined _ALLOCA_H && ! defined _STDLIB_H && ]b4_c_modern[
360 # include <stdlib.h> /* INFRINGES ON USER NAME SPACE */
361 # ifndef _STDLIB_H
362 # define _STDLIB_H 1
363 # endif
364 # endif
365 # endif
366 # endif
367 # endif
368
369 ]])dnl
370 [# ifdef YYSTACK_ALLOC
371 /* Pacify GCC's `empty if-body' warning. */
372 # define YYSTACK_FREE(Ptr) do { /* empty */; } while (YYID (0))
373 # ifndef YYSTACK_ALLOC_MAXIMUM
374 /* The OS might guarantee only one guard page at the bottom of the stack,
375 and a page size can be as small as 4096 bytes. So we cannot safely
376 invoke alloca (N) if N exceeds 4096. Use a slightly smaller number
377 to allow for a few compiler-allocated temporary stack slots. */
378 # define YYSTACK_ALLOC_MAXIMUM 4032 /* reasonable circa 2006 */
379 # endif
380 # else
381 # define YYSTACK_ALLOC YYMALLOC
382 # define YYSTACK_FREE YYFREE
383 # ifndef YYSTACK_ALLOC_MAXIMUM
384 # define YYSTACK_ALLOC_MAXIMUM YYSIZE_MAXIMUM
385 # endif
386 # if (defined __cplusplus && ! defined _STDLIB_H \
387 && ! ((defined YYMALLOC || defined malloc) \
388 && (defined YYFREE || defined free)))
389 # include <stdlib.h> /* INFRINGES ON USER NAME SPACE */
390 # ifndef _STDLIB_H
391 # define _STDLIB_H 1
392 # endif
393 # endif
394 # ifndef YYMALLOC
395 # define YYMALLOC malloc
396 # if ! defined malloc && ! defined _STDLIB_H && ]b4_c_modern[
397 void *malloc (YYSIZE_T); /* INFRINGES ON USER NAME SPACE */
398 # endif
399 # endif
400 # ifndef YYFREE
401 # define YYFREE free
402 # if ! defined free && ! defined _STDLIB_H && ]b4_c_modern[
403 void free (void *); /* INFRINGES ON USER NAME SPACE */
404 # endif
405 # endif
406 # endif
407 #endif /* ! defined yyoverflow || YYERROR_VERBOSE */
408
409
410 #if (! defined yyoverflow \
411 && (! defined __cplusplus \
412 || (]b4_locations_if([[defined YYLTYPE_IS_TRIVIAL && YYLTYPE_IS_TRIVIAL \
413 && ]])[defined YYSTYPE_IS_TRIVIAL && YYSTYPE_IS_TRIVIAL)))
414
415 /* A type that is properly aligned for any stack member. */
416 union yyalloc
417 {
418 yytype_int16 yyss_alloc;
419 YYSTYPE yyvs_alloc;]b4_locations_if([
420 YYLTYPE yyls_alloc;])[
421 };
422
423 /* The size of the maximum gap between one aligned stack and the next. */
424 # define YYSTACK_GAP_MAXIMUM (sizeof (union yyalloc) - 1)
425
426 /* The size of an array large to enough to hold all stacks, each with
427 N elements. */
428 ]b4_locations_if(
429 [# define YYSTACK_BYTES(N) \
430 ((N) * (sizeof (yytype_int16) + sizeof (YYSTYPE) + sizeof (YYLTYPE)) \
431 + 2 * YYSTACK_GAP_MAXIMUM)],
432 [# define YYSTACK_BYTES(N) \
433 ((N) * (sizeof (yytype_int16) + sizeof (YYSTYPE)) \
434 + YYSTACK_GAP_MAXIMUM)])[
435
436 /* Copy COUNT objects from FROM to TO. The source and destination do
437 not overlap. */
438 # ifndef YYCOPY
439 # if defined __GNUC__ && 1 < __GNUC__
440 # define YYCOPY(To, From, Count) \
441 __builtin_memcpy (To, From, (Count) * sizeof (*(From)))
442 # else
443 # define YYCOPY(To, From, Count) \
444 do \
445 { \
446 YYSIZE_T yyi; \
447 for (yyi = 0; yyi < (Count); yyi++) \
448 (To)[yyi] = (From)[yyi]; \
449 } \
450 while (YYID (0))
451 # endif
452 # endif
453
454 /* Relocate STACK from its old location to the new one. The
455 local variables YYSIZE and YYSTACKSIZE give the old and new number of
456 elements in the stack, and YYPTR gives the new location of the
457 stack. Advance YYPTR to a properly aligned location for the next
458 stack. */
459 # define YYSTACK_RELOCATE(Stack_alloc, Stack) \
460 do \
461 { \
462 YYSIZE_T yynewbytes; \
463 YYCOPY (&yyptr->Stack_alloc, Stack, yysize); \
464 Stack = &yyptr->Stack_alloc; \
465 yynewbytes = yystacksize * sizeof (*Stack) + YYSTACK_GAP_MAXIMUM; \
466 yyptr += yynewbytes / sizeof (*yyptr); \
467 } \
468 while (YYID (0))
469
470 #endif
471
472 /* YYFINAL -- State number of the termination state. */
473 #define YYFINAL ]b4_final_state_number[
474 /* YYLAST -- Last index in YYTABLE. */
475 #define YYLAST ]b4_last[
476
477 /* YYNTOKENS -- Number of terminals. */
478 #define YYNTOKENS ]b4_tokens_number[
479 /* YYNNTS -- Number of nonterminals. */
480 #define YYNNTS ]b4_nterms_number[
481 /* YYNRULES -- Number of rules. */
482 #define YYNRULES ]b4_rules_number[
483 /* YYNRULES -- Number of states. */
484 #define YYNSTATES ]b4_states_number[
485
486 /* YYTRANSLATE(YYLEX) -- Bison symbol number corresponding to YYLEX. */
487 #define YYUNDEFTOK ]b4_undef_token_number[
488 #define YYMAXUTOK ]b4_user_token_number_max[
489
490 #define YYTRANSLATE(YYX) \
491 ((unsigned int) (YYX) <= YYMAXUTOK ? yytranslate[YYX] : YYUNDEFTOK)
492
493 /* YYTRANSLATE[YYLEX] -- Bison symbol number corresponding to YYLEX. */
494 static const ]b4_int_type_for([b4_translate])[ yytranslate[] =
495 {
496 ]b4_translate[
497 };
498
499 #if YYDEBUG
500 /* YYPRHS[YYN] -- Index of the first RHS symbol of rule number YYN in
501 YYRHS. */
502 static const ]b4_int_type_for([b4_prhs])[ yyprhs[] =
503 {
504 ]b4_prhs[
505 };
506
507 /* YYRHS -- A `-1'-separated list of the rules' RHS. */
508 static const ]b4_int_type_for([b4_rhs])[ yyrhs[] =
509 {
510 ]b4_rhs[
511 };
512
513 /* YYRLINE[YYN] -- source line where rule number YYN was defined. */
514 static const ]b4_int_type_for([b4_rline])[ yyrline[] =
515 {
516 ]b4_rline[
517 };
518 #endif
519
520 #if YYDEBUG || YYERROR_VERBOSE || YYTOKEN_TABLE
521 /* YYTNAME[SYMBOL-NUM] -- String name of the symbol SYMBOL-NUM.
522 First, the terminals, then, starting at YYNTOKENS, nonterminals. */
523 static const char *const yytname[] =
524 {
525 ]b4_tname[
526 };
527 #endif
528
529 # ifdef YYPRINT
530 /* YYTOKNUM[YYLEX-NUM] -- Internal token number corresponding to
531 token YYLEX-NUM. */
532 static const ]b4_int_type_for([b4_toknum])[ yytoknum[] =
533 {
534 ]b4_toknum[
535 };
536 # endif
537
538 /* YYR1[YYN] -- Symbol number of symbol that rule YYN derives. */
539 static const ]b4_int_type_for([b4_r1])[ yyr1[] =
540 {
541 ]b4_r1[
542 };
543
544 /* YYR2[YYN] -- Number of symbols composing right hand side of rule YYN. */
545 static const ]b4_int_type_for([b4_r2])[ yyr2[] =
546 {
547 ]b4_r2[
548 };
549
550 /* YYDEFACT[STATE-NAME] -- Default rule to reduce with in state
551 STATE-NUM when YYTABLE doesn't specify something else to do. Zero
552 means the default is an error. */
553 static const ]b4_int_type_for([b4_defact])[ yydefact[] =
554 {
555 ]b4_defact[
556 };
557
558 /* YYDEFGOTO[NTERM-NUM]. */
559 static const ]b4_int_type_for([b4_defgoto])[ yydefgoto[] =
560 {
561 ]b4_defgoto[
562 };
563
564 /* YYPACT[STATE-NUM] -- Index in YYTABLE of the portion describing
565 STATE-NUM. */
566 #define YYPACT_NINF ]b4_pact_ninf[
567 static const ]b4_int_type_for([b4_pact])[ yypact[] =
568 {
569 ]b4_pact[
570 };
571
572 /* YYPGOTO[NTERM-NUM]. */
573 static const ]b4_int_type_for([b4_pgoto])[ yypgoto[] =
574 {
575 ]b4_pgoto[
576 };
577
578 /* YYTABLE[YYPACT[STATE-NUM]]. What to do in state STATE-NUM. If
579 positive, shift that token. If negative, reduce the rule which
580 number is the opposite. If zero, do what YYDEFACT says.
581 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 static const ]b4_int_type_for([b4_check])[ yycheck[] =
589 {
590 ]b4_check[
591 };
592
593 /* YYSTOS[STATE-NUM] -- The (internal number of the) accessing
594 symbol of state STATE-NUM. */
595 static const ]b4_int_type_for([b4_stos])[ yystos[] =
596 {
597 ]b4_stos[
598 };
599
600 #define yyerrok (yyerrstatus = 0)
601 #define yyclearin (yychar = YYEMPTY)
602 #define YYEMPTY (-2)
603 #define YYEOF 0
604
605 #define YYACCEPT goto yyacceptlab
606 #define YYABORT goto yyabortlab
607 #define YYERROR goto yyerrorlab
608
609
610 /* Like YYERROR except do call yyerror. This remains here temporarily
611 to ease the transition to the new meaning of YYERROR, for GCC.
612 Once GCC version 2 has supplanted version 1, this can go. */
613
614 #define YYFAIL goto yyerrlab
615
616 #define YYRECOVERING() (!!yyerrstatus)
617
618 #define YYBACKUP(Token, Value) \
619 do \
620 if (yychar == YYEMPTY && yylen == 1) \
621 { \
622 yychar = (Token); \
623 yylval = (Value); \
624 yytoken = YYTRANSLATE (yychar); \
625 YYPOPSTACK (1); \
626 goto yybackup; \
627 } \
628 else \
629 { \
630 yyerror (]b4_yyerror_args[YY_("syntax error: cannot back up")); \
631 YYERROR; \
632 } \
633 while (YYID (0))
634
635
636 #define YYTERROR 1
637 #define YYERRCODE 256
638
639
640 /* YYLLOC_DEFAULT -- Set CURRENT to span from RHS[1] to RHS[N].
641 If N is 0, then set CURRENT to the empty location which ends
642 the previous symbol: RHS[0] (always defined). */
643
644 #define YYRHSLOC(Rhs, K) ((Rhs)[K])
645 #ifndef YYLLOC_DEFAULT
646 # define YYLLOC_DEFAULT(Current, Rhs, N) \
647 do \
648 if (YYID (N)) \
649 { \
650 (Current).first_line = YYRHSLOC (Rhs, 1).first_line; \
651 (Current).first_column = YYRHSLOC (Rhs, 1).first_column; \
652 (Current).last_line = YYRHSLOC (Rhs, N).last_line; \
653 (Current).last_column = YYRHSLOC (Rhs, N).last_column; \
654 } \
655 else \
656 { \
657 (Current).first_line = (Current).last_line = \
658 YYRHSLOC (Rhs, 0).last_line; \
659 (Current).first_column = (Current).last_column = \
660 YYRHSLOC (Rhs, 0).last_column; \
661 } \
662 while (YYID (0))
663 #endif
664
665
666 /* YY_LOCATION_PRINT -- Print the location on the stream.
667 This macro was not mandated originally: define only if we know
668 we won't break user code: when these are the locations we know. */
669
670 #ifndef YY_LOCATION_PRINT
671 # if YYLTYPE_IS_TRIVIAL
672 # define YY_LOCATION_PRINT(File, Loc) \
673 fprintf (File, "%d.%d-%d.%d", \
674 (Loc).first_line, (Loc).first_column, \
675 (Loc).last_line, (Loc).last_column)
676 # else
677 # define YY_LOCATION_PRINT(File, Loc) ((void) 0)
678 # endif
679 #endif
680
681
682 /* YYLEX -- calling `yylex' with the right arguments. */
683
684 #ifdef YYLEX_PARAM
685 # define YYLEX yylex (]b4_pure_if([&yylval[]b4_locations_if([, &yylloc]), ])[YYLEX_PARAM)
686 #else
687 # define YYLEX ]b4_c_function_call([yylex], [int], b4_lex_param)[
688 #endif
689
690 /* Enable debugging if requested. */
691 #if YYDEBUG
692
693 # ifndef YYFPRINTF
694 # include <stdio.h> /* INFRINGES ON USER NAME SPACE */
695 # define YYFPRINTF fprintf
696 # endif
697
698 # define YYDPRINTF(Args) \
699 do { \
700 if (yydebug) \
701 YYFPRINTF Args; \
702 } while (YYID (0))
703
704 # define YY_SYMBOL_PRINT(Title, Type, Value, Location) \
705 do { \
706 if (yydebug) \
707 { \
708 YYFPRINTF (stderr, "%s ", Title); \
709 yy_symbol_print (stderr, \
710 Type, Value]b4_locations_if([, Location])[]b4_user_args[); \
711 YYFPRINTF (stderr, "\n"); \
712 } \
713 } while (YYID (0))
714
715 ]b4_yy_symbol_print_generate([b4_c_function_def])[
716
717 /*------------------------------------------------------------------.
718 | yy_stack_print -- Print the state stack from its BOTTOM up to its |
719 | TOP (included). |
720 `------------------------------------------------------------------*/
721
722 ]b4_c_function_def([yy_stack_print], [static void],
723 [[yytype_int16 *yybottom], [yybottom]],
724 [[yytype_int16 *yytop], [yytop]])[
725 {
726 YYFPRINTF (stderr, "Stack now");
727 for (; yybottom <= yytop; yybottom++)
728 {
729 int yybot = *yybottom;
730 YYFPRINTF (stderr, " %d", yybot);
731 }
732 YYFPRINTF (stderr, "\n");
733 }
734
735 # define YY_STACK_PRINT(Bottom, Top) \
736 do { \
737 if (yydebug) \
738 yy_stack_print ((Bottom), (Top)); \
739 } while (YYID (0))
740
741
742 /*------------------------------------------------.
743 | Report that the YYRULE is going to be reduced. |
744 `------------------------------------------------*/
745
746 ]b4_c_function_def([yy_reduce_print], [static void],
747 [[YYSTYPE *yyvsp], [yyvsp]],
748 b4_locations_if([[[YYLTYPE *yylsp], [yylsp]],
749 ])[[int yyrule], [yyrule]]m4_ifset([b4_parse_param], [,
750 b4_parse_param]))[
751 {
752 int yynrhs = yyr2[yyrule];
753 int yyi;
754 unsigned long int yylno = yyrline[yyrule];
755 YYFPRINTF (stderr, "Reducing stack by rule %d (line %lu):\n",
756 yyrule - 1, yylno);
757 /* The symbols being reduced. */
758 for (yyi = 0; yyi < yynrhs; yyi++)
759 {
760 YYFPRINTF (stderr, " $%d = ", yyi + 1);
761 yy_symbol_print (stderr, yyrhs[yyprhs[yyrule] + yyi],
762 &]b4_rhs_value(yynrhs, yyi + 1)[
763 ]b4_locations_if([, &]b4_rhs_location(yynrhs, yyi + 1))[]dnl
764 b4_user_args[);
765 YYFPRINTF (stderr, "\n");
766 }
767 }
768
769 # define YY_REDUCE_PRINT(Rule) \
770 do { \
771 if (yydebug) \
772 yy_reduce_print (yyvsp, ]b4_locations_if([yylsp, ])[Rule]b4_user_args[); \
773 } while (YYID (0))
774
775 /* Nonzero means print parse trace. It is left uninitialized so that
776 multiple parsers can coexist. */
777 int yydebug;
778 #else /* !YYDEBUG */
779 # define YYDPRINTF(Args)
780 # define YY_SYMBOL_PRINT(Title, Type, Value, Location)
781 # define YY_STACK_PRINT(Bottom, Top)
782 # define YY_REDUCE_PRINT(Rule)
783 #endif /* !YYDEBUG */
784
785
786 /* YYINITDEPTH -- initial size of the parser's stacks. */
787 #ifndef YYINITDEPTH
788 # define YYINITDEPTH ]b4_stack_depth_init[
789 #endif
790
791 /* YYMAXDEPTH -- maximum size the stacks can grow to (effective only
792 if the built-in stack extension method is used).
793
794 Do not make this value too large; the results are undefined if
795 YYSTACK_ALLOC_MAXIMUM < YYSTACK_BYTES (YYMAXDEPTH)
796 evaluated with infinite-precision integer arithmetic. */
797
798 #ifndef YYMAXDEPTH
799 # define YYMAXDEPTH ]b4_stack_depth_max[
800 #endif
801
802 \f
803
804 #if YYERROR_VERBOSE
805
806 # ifndef yystrlen
807 # if defined __GLIBC__ && defined _STRING_H
808 # define yystrlen strlen
809 # else
810 /* Return the length of YYSTR. */
811 ]b4_c_function_def([yystrlen], [static YYSIZE_T],
812 [[const char *yystr], [yystr]])[
813 {
814 YYSIZE_T yylen;
815 for (yylen = 0; yystr[yylen]; yylen++)
816 continue;
817 return yylen;
818 }
819 # endif
820 # endif
821
822 # ifndef yystpcpy
823 # if defined __GLIBC__ && defined _STRING_H && defined _GNU_SOURCE
824 # define yystpcpy stpcpy
825 # else
826 /* Copy YYSRC to YYDEST, returning the address of the terminating '\0' in
827 YYDEST. */
828 ]b4_c_function_def([yystpcpy], [static char *],
829 [[char *yydest], [yydest]], [[const char *yysrc], [yysrc]])[
830 {
831 char *yyd = yydest;
832 const char *yys = yysrc;
833
834 while ((*yyd++ = *yys++) != '\0')
835 continue;
836
837 return yyd - 1;
838 }
839 # endif
840 # endif
841
842 # ifndef yytnamerr
843 /* Copy to YYRES the contents of YYSTR after stripping away unnecessary
844 quotes and backslashes, so that it's suitable for yyerror. The
845 heuristic is that double-quoting is unnecessary unless the string
846 contains an apostrophe, a comma, or backslash (other than
847 backslash-backslash). YYSTR is taken from yytname. If YYRES is
848 null, do not copy; instead, return the length of what the result
849 would have been. */
850 static YYSIZE_T
851 yytnamerr (char *yyres, const char *yystr)
852 {
853 if (*yystr == '"')
854 {
855 YYSIZE_T yyn = 0;
856 char const *yyp = yystr;
857
858 for (;;)
859 switch (*++yyp)
860 {
861 case '\'':
862 case ',':
863 goto do_not_strip_quotes;
864
865 case '\\':
866 if (*++yyp != '\\')
867 goto do_not_strip_quotes;
868 /* Fall through. */
869 default:
870 if (yyres)
871 yyres[yyn] = *yyp;
872 yyn++;
873 break;
874
875 case '"':
876 if (yyres)
877 yyres[yyn] = '\0';
878 return yyn;
879 }
880 do_not_strip_quotes: ;
881 }
882
883 if (! yyres)
884 return yystrlen (yystr);
885
886 return yystpcpy (yyres, yystr) - yyres;
887 }
888 # endif
889
890 /* Copy into YYRESULT an error message about the unexpected token
891 YYCHAR while in state YYSTATE. Return the number of bytes copied,
892 including the terminating null byte. If YYRESULT is null, do not
893 copy anything; just return the number of bytes that would be
894 copied. As a special case, return 0 if an ordinary "syntax error"
895 message will do. Return YYSIZE_MAXIMUM if overflow occurs during
896 size calculation. */
897 static YYSIZE_T
898 yysyntax_error (char *yyresult, int yystate, int yychar)
899 {
900 int yyn = yypact[yystate];
901
902 if (! (YYPACT_NINF < yyn && yyn <= YYLAST))
903 return 0;
904 else
905 {
906 int yytype = YYTRANSLATE (yychar);
907 YYSIZE_T yysize0 = yytnamerr (0, yytname[yytype]);
908 YYSIZE_T yysize = yysize0;
909 YYSIZE_T yysize1;
910 int yysize_overflow = 0;
911 enum { YYERROR_VERBOSE_ARGS_MAXIMUM = 5 };
912 char const *yyarg[YYERROR_VERBOSE_ARGS_MAXIMUM];
913 int yyx;
914
915 # if 0
916 /* This is so xgettext sees the translatable formats that are
917 constructed on the fly. */
918 YY_("syntax error, unexpected %s");
919 YY_("syntax error, unexpected %s, expecting %s");
920 YY_("syntax error, unexpected %s, expecting %s or %s");
921 YY_("syntax error, unexpected %s, expecting %s or %s or %s");
922 YY_("syntax error, unexpected %s, expecting %s or %s or %s or %s");
923 # endif
924 char *yyfmt;
925 char const *yyf;
926 static char const yyunexpected[] = "syntax error, unexpected %s";
927 static char const yyexpecting[] = ", expecting %s";
928 static char const yyor[] = " or %s";
929 char yyformat[sizeof yyunexpected
930 + sizeof yyexpecting - 1
931 + ((YYERROR_VERBOSE_ARGS_MAXIMUM - 2)
932 * (sizeof yyor - 1))];
933 char const *yyprefix = yyexpecting;
934
935 /* Start YYX at -YYN if negative to avoid negative indexes in
936 YYCHECK. */
937 int yyxbegin = yyn < 0 ? -yyn : 0;
938
939 /* Stay within bounds of both yycheck and yytname. */
940 int yychecklim = YYLAST - yyn + 1;
941 int yyxend = yychecklim < YYNTOKENS ? yychecklim : YYNTOKENS;
942 int yycount = 1;
943
944 yyarg[0] = yytname[yytype];
945 yyfmt = yystpcpy (yyformat, yyunexpected);
946
947 for (yyx = yyxbegin; yyx < yyxend; ++yyx)
948 if (yycheck[yyx + yyn] == yyx && yyx != YYTERROR)
949 {
950 if (yycount == YYERROR_VERBOSE_ARGS_MAXIMUM)
951 {
952 yycount = 1;
953 yysize = yysize0;
954 yyformat[sizeof yyunexpected - 1] = '\0';
955 break;
956 }
957 yyarg[yycount++] = yytname[yyx];
958 yysize1 = yysize + yytnamerr (0, yytname[yyx]);
959 yysize_overflow |= (yysize1 < yysize);
960 yysize = yysize1;
961 yyfmt = yystpcpy (yyfmt, yyprefix);
962 yyprefix = yyor;
963 }
964
965 yyf = YY_(yyformat);
966 yysize1 = yysize + yystrlen (yyf);
967 yysize_overflow |= (yysize1 < yysize);
968 yysize = yysize1;
969
970 if (yysize_overflow)
971 return YYSIZE_MAXIMUM;
972
973 if (yyresult)
974 {
975 /* Avoid sprintf, as that infringes on the user's name space.
976 Don't have undefined behavior even if the translation
977 produced a string with the wrong number of "%s"s. */
978 char *yyp = yyresult;
979 int yyi = 0;
980 while ((*yyp = *yyf) != '\0')
981 {
982 if (*yyp == '%' && yyf[1] == 's' && yyi < yycount)
983 {
984 yyp += yytnamerr (yyp, yyarg[yyi++]);
985 yyf += 2;
986 }
987 else
988 {
989 yyp++;
990 yyf++;
991 }
992 }
993 }
994 return yysize;
995 }
996 }
997 #endif /* YYERROR_VERBOSE */
998 \f
999
1000 ]b4_yydestruct_generate([b4_c_function_def])[
1001
1002 ]b4_push_if([],
1003 [[/* Prevent warnings from -Wmissing-prototypes. */
1004 #ifdef YYPARSE_PARAM
1005 ]b4_c_function_decl([yyparse], [int],
1006 [[void *YYPARSE_PARAM], [YYPARSE_PARAM]])[
1007 #else /* ! YYPARSE_PARAM */
1008 ]b4_c_function_decl([yyparse], [int], b4_parse_param)[
1009 #endif /* ! YYPARSE_PARAM */]])
1010
1011 m4_divert_push([KILL])# ======================== M4 code.
1012 # b4_declare_scanner_communication_variables
1013 # ------------------------------------------
1014 # Declare the variables that are global, or local to YYPARSE if
1015 # pure-parser.
1016 m4_define([b4_declare_scanner_communication_variables],
1017 [[/* The lookahead symbol. */
1018 int yychar;
1019
1020 /* The semantic value of the lookahead symbol. */
1021 YYSTYPE yylval;
1022 ]b4_locations_if([[
1023 /* Location data for the lookahead symbol. */
1024 YYLTYPE yylloc;
1025 ]])b4_pure_if([], [[
1026 /* Number of syntax errors so far. */
1027 int yynerrs;
1028 ]])])
1029
1030 # b4_declare_parser_state_variables
1031 # ---------------------------------
1032 # Declare all the variables that are needed to maintain the parser state
1033 # between calls to yypush_parse.
1034 m4_define([b4_declare_parser_state_variables],
1035 [b4_pure_if([[ /* Number of syntax errors so far. */
1036 int yynerrs;
1037 ]])[
1038 int yystate;
1039 /* Number of tokens to shift before error messages enabled. */
1040 int yyerrstatus;
1041
1042 /* The stacks and their tools:
1043 `yyss': related to states.
1044 `yyvs': related to semantic values.]b4_locations_if([[
1045 `yyls': related to locations.]])[
1046
1047 Refer to the stacks thru separate pointers, to allow yyoverflow
1048 to reallocate them elsewhere. */
1049
1050 /* The state stack. */
1051 yytype_int16 yyssa[YYINITDEPTH];
1052 yytype_int16 *yyss;
1053 yytype_int16 *yyssp;
1054
1055 /* The semantic value stack. */
1056 YYSTYPE yyvsa[YYINITDEPTH];
1057 YYSTYPE *yyvs;
1058 YYSTYPE *yyvsp;
1059 ]b4_locations_if([[
1060 /* The location stack. */
1061 YYLTYPE yylsa[YYINITDEPTH];
1062 YYLTYPE *yyls;
1063 YYLTYPE *yylsp;
1064
1065 /* The locations where the error started and ended. */
1066 YYLTYPE yyerror_range[2];
1067 ]])[
1068 YYSIZE_T yystacksize;
1069 ]])
1070
1071 m4_divert_pop([KILL])dnl# ====================== End of M4 code.
1072
1073 b4_pure_if([], [b4_declare_scanner_communication_variables])
1074
1075 b4_push_if(
1076 [[struct yypstate
1077 {
1078 ]b4_declare_parser_state_variables[
1079 /* Used to determine if this is the first time this instance has
1080 been used. */
1081 int yynew;
1082 };]b4_pure_if([], [[
1083
1084 static char yypstate_allocated = 0;]])b4_pull_if([
1085
1086 b4_c_function_def([[yyparse]], [[int]], b4_parse_param)[
1087 {
1088 return yypull_parse (0]m4_ifset([b4_parse_param],
1089 [[, ]b4_c_args(b4_parse_param)])[);
1090 }
1091
1092 ]b4_c_function_def([[yypull_parse]], [[int]],
1093 [[[yypstate *yyps]], [[yyps]]]m4_ifset([b4_parse_param], [,
1094 b4_parse_param]))[
1095 {
1096 int yystatus;
1097 yypstate *yyps_local;]b4_pure_if([[
1098 int yychar;
1099 YYSTYPE yylval;]b4_locations_if([[
1100 YYLTYPE yylloc;]])])[
1101 if (yyps == 0)
1102 {
1103 yyps_local = yypstate_new ();
1104 if (!yyps_local)
1105 {]b4_pure_if([[
1106 yyerror (]b4_yyerror_args[YY_("memory exhausted"));]], [[
1107 if (!yypstate_allocated)
1108 yyerror (]b4_yyerror_args[YY_("memory exhausted"));]])[
1109 return 2;
1110 }
1111 }
1112 else
1113 yyps_local = yyps;
1114 do {
1115 yychar = YYLEX;
1116 yystatus =
1117 yypush_parse (yyps_local]b4_pure_if([[, yychar, &yylval]b4_locations_if([[, &yylloc]])])m4_ifset([b4_parse_param], [, b4_c_args(b4_parse_param)])[);
1118 } while (yystatus == YYPUSH_MORE);
1119 if (yyps == 0)
1120 yypstate_delete (yyps_local);
1121 return yystatus;
1122 }]])[
1123
1124 /* Initialize the parser data structure. */
1125 ]b4_c_function_def([[yypstate_new]], [[yypstate *]])[
1126 {
1127 yypstate *yyps;]b4_pure_if([], [[
1128 if (yypstate_allocated)
1129 return 0;]])[
1130 yyps = (yypstate *) malloc (sizeof *yyps);
1131 if (!yyps)
1132 return 0;
1133 yyps->yynew = 1;]b4_pure_if([], [[
1134 yypstate_allocated = 1;]])[
1135 return yyps;
1136 }
1137
1138 ]b4_c_function_def([[yypstate_delete]], [[void]],
1139 [[[yypstate *yyps]], [[yyps]]])[
1140 {
1141 #ifndef yyoverflow
1142 /* If the stack was reallocated but the parse did not complete, then the
1143 stack still needs to be freed. */
1144 if (!yyps->yynew && yyps->yyss != yyps->yyssa)
1145 YYSTACK_FREE (yyps->yyss);
1146 #endif
1147 free (yyps);]b4_pure_if([], [[
1148 yypstate_allocated = 0;]])[
1149 }
1150
1151 ]b4_pure_if([[#define ]b4_prefix[nerrs yyps->]b4_prefix[nerrs
1152 ]])[#define yystate yyps->yystate
1153 #define yyerrstatus yyps->yyerrstatus
1154 #define yyssa yyps->yyssa
1155 #define yyss yyps->yyss
1156 #define yyssp yyps->yyssp
1157 #define yyvsa yyps->yyvsa
1158 #define yyvs yyps->yyvs
1159 #define yyvsp yyps->yyvsp
1160 ]b4_locations_if([[#define yylsa yyps->yylsa
1161 #define yyls yyps->yyls
1162 #define yylsp yyps->yylsp
1163 #define yyerror_range yyps->yyerror_range
1164 ]])[#define yystacksize yyps->yystacksize
1165 ]])[
1166 /*-------------------------.
1167 | yyparse or yypush_parse. |
1168 `-------------------------*/
1169 ]b4_push_if([
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 #ifdef YYPARSE_PARAM
1177 b4_c_function_def([yyparse], [int], [[void *YYPARSE_PARAM], [YYPARSE_PARAM]])
1178 #else /* ! YYPARSE_PARAM */
1179 b4_c_function_def([yyparse], [int], b4_parse_param)
1180 #endif])[
1181 {
1182 ]b4_pure_if([b4_declare_scanner_communication_variables])
1183 b4_push_if([b4_pure_if([], [[ int yypushed_char = yychar;
1184 YYSTYPE yypushed_val = yylval;
1185 ]b4_locations_if([[YYLTYPE yypushed_loc = yylloc;
1186 ]])])],
1187 [b4_declare_parser_state_variables])[
1188 int yyn;
1189 int yyresult;
1190 /* Lookahead token as an internal (translated) token number. */
1191 int yytoken;
1192 /* The variables used to return semantic value and location from the
1193 action routines. */
1194 YYSTYPE yyval;]b4_locations_if([[
1195 YYLTYPE yyloc;]])[
1196
1197 #if YYERROR_VERBOSE
1198 /* Buffer for error messages, and its allocated size. */
1199 char yymsgbuf[128];
1200 char *yymsg = yymsgbuf;
1201 YYSIZE_T yymsg_alloc = sizeof yymsgbuf;
1202 #endif
1203
1204 #define YYPOPSTACK(N) (yyvsp -= (N), yyssp -= (N)]b4_locations_if([, yylsp -= (N)])[)
1205
1206 /* The number of symbols on the RHS of the reduced rule.
1207 Keep to zero when no symbol should be popped. */
1208 int yylen = 0;]b4_push_if([[
1209
1210 if (!yyps->yynew)
1211 {
1212 yyn = yypact[yystate];
1213 goto yyread_pushed_token;
1214 }]])[
1215
1216 yytoken = 0;
1217 yyss = yyssa;
1218 yyvs = yyvsa;]b4_locations_if([[
1219 yyls = yylsa;]])[
1220 yystacksize = YYINITDEPTH;
1221
1222 YYDPRINTF ((stderr, "Starting parse\n"));
1223
1224 yystate = 0;
1225 yyerrstatus = 0;
1226 yynerrs = 0;
1227 yychar = YYEMPTY; /* Cause a token to be read. */
1228
1229 /* Initialize stack pointers.
1230 Waste one element of value and location stack
1231 so that they stay on the same level as the state stack.
1232 The wasted elements are never initialized. */
1233 yyssp = yyss;
1234 yyvsp = yyvs;]b4_locations_if([[
1235 yylsp = yyls;
1236
1237 #if YYLTYPE_IS_TRIVIAL
1238 /* Initialize the default location before parsing starts. */
1239 yylloc.first_line = yylloc.last_line = ]b4_location_initial_line[;
1240 yylloc.first_column = yylloc.last_column = ]b4_location_initial_column[;
1241 #endif]])
1242 m4_ifdef([b4_initial_action],[
1243 m4_pushdef([b4_at_dollar], [m4_define([b4_at_dollar_used])yylloc])dnl
1244 m4_pushdef([b4_dollar_dollar], [m4_define([b4_dollar_dollar_used])yylval])dnl
1245 /* User initialization code. */
1246 b4_user_initial_action
1247 m4_popdef([b4_dollar_dollar])dnl
1248 m4_popdef([b4_at_dollar])])dnl
1249 m4_ifdef([b4_dollar_dollar_used],[[ yyvsp[0] = yylval;
1250 ]])dnl
1251 m4_ifdef([b4_at_dollar_used], [[ yylsp[0] = yylloc;
1252 ]])[
1253 goto yysetstate;
1254
1255 /*------------------------------------------------------------.
1256 | yynewstate -- Push a new state, which is found in yystate. |
1257 `------------------------------------------------------------*/
1258 yynewstate:
1259 /* In all cases, when you get here, the value and location stacks
1260 have just been pushed. So pushing a state here evens the stacks. */
1261 yyssp++;
1262
1263 yysetstate:
1264 *yyssp = yystate;
1265
1266 if (yyss + yystacksize - 1 <= yyssp)
1267 {
1268 /* Get the current used size of the three stacks, in elements. */
1269 YYSIZE_T yysize = yyssp - yyss + 1;
1270
1271 #ifdef yyoverflow
1272 {
1273 /* Give user a chance to reallocate the stack. Use copies of
1274 these so that the &'s don't force the real ones into
1275 memory. */
1276 YYSTYPE *yyvs1 = yyvs;
1277 yytype_int16 *yyss1 = yyss;]b4_locations_if([
1278 YYLTYPE *yyls1 = yyls;])[
1279
1280 /* Each stack pointer address is followed by the size of the
1281 data in use in that stack, in bytes. This used to be a
1282 conditional around just the two extra args, but that might
1283 be undefined if yyoverflow is a macro. */
1284 yyoverflow (YY_("memory exhausted"),
1285 &yyss1, yysize * sizeof (*yyssp),
1286 &yyvs1, yysize * sizeof (*yyvsp),]b4_locations_if([
1287 &yyls1, yysize * sizeof (*yylsp),])[
1288 &yystacksize);
1289 ]b4_locations_if([
1290 yyls = yyls1;])[
1291 yyss = yyss1;
1292 yyvs = yyvs1;
1293 }
1294 #else /* no yyoverflow */
1295 # ifndef YYSTACK_RELOCATE
1296 goto yyexhaustedlab;
1297 # else
1298 /* Extend the stack our own way. */
1299 if (YYMAXDEPTH <= yystacksize)
1300 goto yyexhaustedlab;
1301 yystacksize *= 2;
1302 if (YYMAXDEPTH < yystacksize)
1303 yystacksize = YYMAXDEPTH;
1304
1305 {
1306 yytype_int16 *yyss1 = yyss;
1307 union yyalloc *yyptr =
1308 (union yyalloc *) YYSTACK_ALLOC (YYSTACK_BYTES (yystacksize));
1309 if (! yyptr)
1310 goto yyexhaustedlab;
1311 YYSTACK_RELOCATE (yyss_alloc, yyss);
1312 YYSTACK_RELOCATE (yyvs_alloc, yyvs);]b4_locations_if([
1313 YYSTACK_RELOCATE (yyls_alloc, yyls);])[
1314 # undef YYSTACK_RELOCATE
1315 if (yyss1 != yyssa)
1316 YYSTACK_FREE (yyss1);
1317 }
1318 # endif
1319 #endif /* no yyoverflow */
1320
1321 yyssp = yyss + yysize - 1;
1322 yyvsp = yyvs + yysize - 1;]b4_locations_if([
1323 yylsp = yyls + yysize - 1;])[
1324
1325 YYDPRINTF ((stderr, "Stack size increased to %lu\n",
1326 (unsigned long int) yystacksize));
1327
1328 if (yyss + yystacksize - 1 <= yyssp)
1329 YYABORT;
1330 }
1331
1332 YYDPRINTF ((stderr, "Entering state %d\n", yystate));
1333
1334 if (yystate == YYFINAL)
1335 YYACCEPT;
1336
1337 goto yybackup;
1338
1339 /*-----------.
1340 | yybackup. |
1341 `-----------*/
1342 yybackup:
1343
1344 /* Do appropriate processing given the current state. Read a
1345 lookahead token if we need one and don't already have one. */
1346
1347 /* First try to decide what to do without reference to lookahead token. */
1348 yyn = yypact[yystate];
1349 if (yyn == YYPACT_NINF)
1350 goto yydefault;
1351
1352 /* Not known => get a lookahead token if don't already have one. */
1353
1354 /* YYCHAR is either YYEMPTY or YYEOF or a valid lookahead symbol. */
1355 if (yychar == YYEMPTY)
1356 {]b4_push_if([[
1357 if (!yyps->yynew)
1358 {]b4_use_push_for_pull_if([], [[
1359 YYDPRINTF ((stderr, "Return for a new token:\n"));]])[
1360 yyresult = YYPUSH_MORE;
1361 goto yypushreturn;
1362 }
1363 yyps->yynew = 0;]b4_pure_if([], [[
1364 /* Restoring the pushed token is only necessary for the first
1365 yypush_parse invocation since subsequent invocations don't overwrite
1366 it before jumping to yyread_pushed_token. */
1367 yychar = yypushed_char;
1368 yylval = yypushed_val;]b4_locations_if([[
1369 yylloc = yypushed_loc;]])])[
1370 yyread_pushed_token:]])[
1371 YYDPRINTF ((stderr, "Reading a token: "));]b4_push_if([b4_pure_if([[
1372 yychar = yypushed_char;
1373 if (yypushed_val)
1374 yylval = *yypushed_val;]b4_locations_if([[
1375 if (yypushed_loc)
1376 yylloc = *yypushed_loc;]])])], [[
1377 yychar = YYLEX;]])[
1378 }
1379
1380 if (yychar <= YYEOF)
1381 {
1382 yychar = yytoken = YYEOF;
1383 YYDPRINTF ((stderr, "Now at end of input.\n"));
1384 }
1385 else
1386 {
1387 yytoken = YYTRANSLATE (yychar);
1388 YY_SYMBOL_PRINT ("Next token is", yytoken, &yylval, &yylloc);
1389 }
1390
1391 /* If the proper action on seeing token YYTOKEN is to reduce or to
1392 detect an error, take that action. */
1393 yyn += yytoken;
1394 if (yyn < 0 || YYLAST < yyn || yycheck[yyn] != yytoken)
1395 goto yydefault;
1396 yyn = yytable[yyn];
1397 if (yyn <= 0)
1398 {
1399 if (yyn == 0 || yyn == YYTABLE_NINF)
1400 goto yyerrlab;
1401 yyn = -yyn;
1402 goto yyreduce;
1403 }
1404
1405 /* Count tokens shifted since error; after three, turn off error
1406 status. */
1407 if (yyerrstatus)
1408 yyerrstatus--;
1409
1410 /* Shift the lookahead token. */
1411 YY_SYMBOL_PRINT ("Shifting", yytoken, &yylval, &yylloc);
1412
1413 /* Discard the shifted token. */
1414 yychar = YYEMPTY;
1415
1416 yystate = yyn;
1417 *++yyvsp = yylval;
1418 ]b4_locations_if([ *++yylsp = yylloc;])[
1419 goto yynewstate;
1420
1421
1422 /*-----------------------------------------------------------.
1423 | yydefault -- do the default action for the current state. |
1424 `-----------------------------------------------------------*/
1425 yydefault:
1426 yyn = yydefact[yystate];
1427 if (yyn == 0)
1428 goto yyerrlab;
1429 goto yyreduce;
1430
1431
1432 /*-----------------------------.
1433 | yyreduce -- Do a reduction. |
1434 `-----------------------------*/
1435 yyreduce:
1436 /* yyn is the number of a rule to reduce with. */
1437 yylen = yyr2[yyn];
1438
1439 /* If YYLEN is nonzero, implement the default value of the action:
1440 `$$ = $1'.
1441
1442 Otherwise, the following line sets YYVAL to garbage.
1443 This behavior is undocumented and Bison
1444 users should not rely upon it. Assigning to YYVAL
1445 unconditionally makes the parser a bit smaller, and it avoids a
1446 GCC warning that YYVAL may be used uninitialized. */
1447 yyval = yyvsp[1-yylen];
1448
1449 ]b4_locations_if(
1450 [[ /* Default location. */
1451 YYLLOC_DEFAULT (yyloc, (yylsp - yylen), yylen);]])[
1452 YY_REDUCE_PRINT (yyn);
1453 switch (yyn)
1454 {
1455 ]b4_user_actions[
1456 default: break;
1457 }
1458 YY_SYMBOL_PRINT ("-> $$ =", yyr1[yyn], &yyval, &yyloc);
1459
1460 YYPOPSTACK (yylen);
1461 yylen = 0;
1462 YY_STACK_PRINT (yyss, yyssp);
1463
1464 *++yyvsp = yyval;]b4_locations_if([
1465 *++yylsp = yyloc;])[
1466
1467 /* Now `shift' the result of the reduction. Determine what state
1468 that goes to, based on the state we popped back to and the rule
1469 number reduced by. */
1470
1471 yyn = yyr1[yyn];
1472
1473 yystate = yypgoto[yyn - YYNTOKENS] + *yyssp;
1474 if (0 <= yystate && yystate <= YYLAST && yycheck[yystate] == *yyssp)
1475 yystate = yytable[yystate];
1476 else
1477 yystate = yydefgoto[yyn - YYNTOKENS];
1478
1479 goto yynewstate;
1480
1481
1482 /*------------------------------------.
1483 | yyerrlab -- here on detecting error |
1484 `------------------------------------*/
1485 yyerrlab:
1486 /* If not already recovering from an error, report this error. */
1487 if (!yyerrstatus)
1488 {
1489 ++yynerrs;
1490 #if ! YYERROR_VERBOSE
1491 yyerror (]b4_yyerror_args[YY_("syntax error"));
1492 #else
1493 {
1494 YYSIZE_T yysize = yysyntax_error (0, yystate, yychar);
1495 if (yymsg_alloc < yysize && yymsg_alloc < YYSTACK_ALLOC_MAXIMUM)
1496 {
1497 YYSIZE_T yyalloc = 2 * yysize;
1498 if (! (yysize <= yyalloc && yyalloc <= YYSTACK_ALLOC_MAXIMUM))
1499 yyalloc = YYSTACK_ALLOC_MAXIMUM;
1500 if (yymsg != yymsgbuf)
1501 YYSTACK_FREE (yymsg);
1502 yymsg = (char *) YYSTACK_ALLOC (yyalloc);
1503 if (yymsg)
1504 yymsg_alloc = yyalloc;
1505 else
1506 {
1507 yymsg = yymsgbuf;
1508 yymsg_alloc = sizeof yymsgbuf;
1509 }
1510 }
1511
1512 if (0 < yysize && yysize <= yymsg_alloc)
1513 {
1514 (void) yysyntax_error (yymsg, yystate, yychar);
1515 yyerror (]b4_yyerror_args[yymsg);
1516 }
1517 else
1518 {
1519 yyerror (]b4_yyerror_args[YY_("syntax error"));
1520 if (yysize != 0)
1521 goto yyexhaustedlab;
1522 }
1523 }
1524 #endif
1525 }
1526
1527 ]b4_locations_if([[ yyerror_range[0] = yylloc;]])[
1528
1529 if (yyerrstatus == 3)
1530 {
1531 /* If just tried and failed to reuse lookahead token after an
1532 error, discard it. */
1533
1534 if (yychar <= YYEOF)
1535 {
1536 /* Return failure if at end of input. */
1537 if (yychar == YYEOF)
1538 YYABORT;
1539 }
1540 else
1541 {
1542 yydestruct ("Error: discarding",
1543 yytoken, &yylval]b4_locations_if([, &yylloc])[]b4_user_args[);
1544 yychar = YYEMPTY;
1545 }
1546 }
1547
1548 /* Else will try to reuse lookahead token after shifting the error
1549 token. */
1550 goto yyerrlab1;
1551
1552
1553 /*---------------------------------------------------.
1554 | yyerrorlab -- error raised explicitly by YYERROR. |
1555 `---------------------------------------------------*/
1556 yyerrorlab:
1557
1558 /* Pacify compilers like GCC when the user code never invokes
1559 YYERROR and the label yyerrorlab therefore never appears in user
1560 code. */
1561 if (/*CONSTCOND*/ 0)
1562 goto yyerrorlab;
1563
1564 ]b4_locations_if([[ yyerror_range[0] = yylsp[1-yylen];
1565 ]])[ /* Do not reclaim the symbols of the rule which action triggered
1566 this YYERROR. */
1567 YYPOPSTACK (yylen);
1568 yylen = 0;
1569 YY_STACK_PRINT (yyss, yyssp);
1570 yystate = *yyssp;
1571 goto yyerrlab1;
1572
1573
1574 /*-------------------------------------------------------------.
1575 | yyerrlab1 -- common code for both syntax error and YYERROR. |
1576 `-------------------------------------------------------------*/
1577 yyerrlab1:
1578 yyerrstatus = 3; /* Each real token shifted decrements this. */
1579
1580 for (;;)
1581 {
1582 yyn = yypact[yystate];
1583 if (yyn != YYPACT_NINF)
1584 {
1585 yyn += YYTERROR;
1586 if (0 <= yyn && yyn <= YYLAST && yycheck[yyn] == YYTERROR)
1587 {
1588 yyn = yytable[yyn];
1589 if (0 < yyn)
1590 break;
1591 }
1592 }
1593
1594 /* Pop the current state because it cannot handle the error token. */
1595 if (yyssp == yyss)
1596 YYABORT;
1597
1598 ]b4_locations_if([[ yyerror_range[0] = *yylsp;]])[
1599 yydestruct ("Error: popping",
1600 yystos[yystate], yyvsp]b4_locations_if([, yylsp])[]b4_user_args[);
1601 YYPOPSTACK (1);
1602 yystate = *yyssp;
1603 YY_STACK_PRINT (yyss, yyssp);
1604 }
1605
1606 *++yyvsp = yylval;
1607 ]b4_locations_if([[
1608 yyerror_range[1] = yylloc;
1609 /* Using YYLLOC is tempting, but would change the location of
1610 the lookahead. YYLOC is available though. */
1611 YYLLOC_DEFAULT (yyloc, (yyerror_range - 1), 2);
1612 *++yylsp = yyloc;]])[
1613
1614 /* Shift the error token. */
1615 YY_SYMBOL_PRINT ("Shifting", yystos[yyn], yyvsp, yylsp);
1616
1617 yystate = yyn;
1618 goto yynewstate;
1619
1620
1621 /*-------------------------------------.
1622 | yyacceptlab -- YYACCEPT comes here. |
1623 `-------------------------------------*/
1624 yyacceptlab:
1625 yyresult = 0;
1626 goto yyreturn;
1627
1628 /*-----------------------------------.
1629 | yyabortlab -- YYABORT comes here. |
1630 `-----------------------------------*/
1631 yyabortlab:
1632 yyresult = 1;
1633 goto yyreturn;
1634
1635 #if !defined(yyoverflow) || YYERROR_VERBOSE
1636 /*-------------------------------------------------.
1637 | yyexhaustedlab -- memory exhaustion comes here. |
1638 `-------------------------------------------------*/
1639 yyexhaustedlab:
1640 yyerror (]b4_yyerror_args[YY_("memory exhausted"));
1641 yyresult = 2;
1642 /* Fall through. */
1643 #endif
1644
1645 yyreturn:
1646 if (yychar != YYEMPTY)
1647 yydestruct ("Cleanup: discarding lookahead",
1648 yytoken, &yylval]b4_locations_if([, &yylloc])[]b4_user_args[);
1649 /* Do not reclaim the symbols of the rule which action triggered
1650 this YYABORT or YYACCEPT. */
1651 YYPOPSTACK (yylen);
1652 YY_STACK_PRINT (yyss, yyssp);
1653 while (yyssp != yyss)
1654 {
1655 yydestruct ("Cleanup: popping",
1656 yystos[*yyssp], yyvsp]b4_locations_if([, yylsp])[]b4_user_args[);
1657 YYPOPSTACK (1);
1658 }
1659 #ifndef yyoverflow
1660 if (yyss != yyssa)
1661 YYSTACK_FREE (yyss);
1662 #endif
1663 ]b4_push_if([[ yyps->yynew = 1;
1664
1665 yypushreturn:
1666 ]])[#if YYERROR_VERBOSE
1667 if (yymsg != yymsgbuf)
1668 YYSTACK_FREE (yymsg);
1669 #endif
1670 /* Make sure YYID is used. */
1671 return YYID (yyresult);
1672 }
1673
1674
1675 ]b4_epilogue
1676 b4_defines_if(
1677 [@output(b4_spec_defines_file@)@
1678 b4_copyright([Skeleton interface for Bison's Yacc-like parsers in C],dnl '
1679 [1984, 1989, 1990, 2000, 2001, 2002, 2003, 2004, 2005, 2006])
1680
1681 b4_percent_code_get([[requires]])[]dnl
1682
1683 b4_token_enums_defines(b4_tokens)
1684
1685 [#if ! defined YYSTYPE && ! defined YYSTYPE_IS_DECLARED
1686 ]m4_ifdef([b4_stype],
1687 [[typedef union ]b4_union_name[
1688 {
1689 ]b4_user_stype[
1690 } YYSTYPE;
1691 # define YYSTYPE_IS_TRIVIAL 1]],
1692 [m4_if(b4_tag_seen_flag, 0,
1693 [[typedef int YYSTYPE;
1694 # define YYSTYPE_IS_TRIVIAL 1]])])[
1695 # define yystype YYSTYPE /* obsolescent; will be withdrawn */
1696 # define YYSTYPE_IS_DECLARED 1
1697 #endif
1698
1699 ]b4_pure_if([], [[extern YYSTYPE ]b4_prefix[lval;]])
1700
1701 b4_locations_if(
1702 [#if ! defined YYLTYPE && ! defined YYLTYPE_IS_DECLARED
1703 typedef struct YYLTYPE
1704 {
1705 int first_line;
1706 int first_column;
1707 int last_line;
1708 int last_column;
1709 } YYLTYPE;
1710 # define yyltype YYLTYPE /* obsolescent; will be withdrawn */
1711 # define YYLTYPE_IS_DECLARED 1
1712 # define YYLTYPE_IS_TRIVIAL 1
1713 #endif
1714
1715 ]b4_pure_if([], [[extern YYLTYPE ]b4_prefix[lloc;]])
1716 )dnl b4_locations_if
1717 b4_push_if([[
1718 #ifndef YYPUSH_DECLS
1719 # define YYPUSH_DECLS
1720 struct ]b4_prefix[pstate;
1721 typedef struct ]b4_prefix[pstate ]b4_prefix[pstate;
1722 enum { YYPUSH_MORE = 4 };
1723 ]b4_pull_if([b4_c_function_decl([b4_prefix[parse]], [[int]], b4_parse_param)
1724 ])b4_c_function_decl([b4_prefix[push_parse]], [[int]],
1725 [[b4_prefix[pstate *yyps]], [[yyps]]]b4_pure_if([,
1726 [[[int yypushed_char]], [[yypushed_char]]],
1727 [[[YYSTYPE const *yypushed_val]], [[yypushed_val]]]b4_locations_if([,
1728 [[[YYLTYPE const *yypushed_loc]], [[yypushed_loc]]]])])m4_ifset([b4_parse_param], [,
1729 b4_parse_param]))
1730 b4_pull_if([b4_c_function_decl([b4_prefix[pull_parse]], [[int]],
1731 [[b4_prefix[pstate *yyps]], [[yyps]]]m4_ifset([b4_parse_param], [,
1732 b4_parse_param]))])
1733 b4_c_function_decl([b4_prefix[pstate_new]], [b4_prefix[pstate *]],
1734 [[[void]], []])
1735 b4_c_function_decl([b4_prefix[pstate_delete]], [[void]],
1736 [[b4_prefix[pstate *yyps]], [[yyps]]])[
1737 #endif
1738 ]])
1739 b4_percent_code_get([[provides]])[]dnl
1740 ])dnl b4_defines_if
1741 m4_divert_pop(0)
bison