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1 -*- C -*-
2
3 # Yacc compatible skeleton for Bison
4
5 # Copyright (C) 1984, 1989, 1990, 2000, 2001, 2002, 2003, 2004, 2005, 2006,
6 # 2007, 2008, 2009 Free Software Foundation, Inc.
7
8 # This program is free software: you can redistribute it and/or modify
9 # it under the terms of the GNU General Public License as published by
10 # the Free Software Foundation, either version 3 of the License, or
11 # (at your option) any later version.
12 #
13 # This program is distributed in the hope that it will be useful,
14 # but WITHOUT ANY WARRANTY; without even the implied warranty of
15 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 # GNU General Public License for more details.
17 #
18 # You should have received a copy of the GNU General Public License
19 # along with this program. If not, see <http://www.gnu.org/licenses/>.
20
21 # Check the value of %define api.push-pull.
22 b4_percent_define_default([[api.push-pull]], [[pull]])
23 b4_percent_define_check_values([[[[api.push-pull]],
24 [[pull]], [[push]], [[both]]]])
25 b4_define_flag_if([pull]) m4_define([b4_pull_flag], [[1]])
26 b4_define_flag_if([push]) m4_define([b4_push_flag], [[1]])
27 m4_case(b4_percent_define_get([[api.push-pull]]),
28 [pull], [m4_define([b4_push_flag], [[0]])],
29 [push], [m4_define([b4_pull_flag], [[0]])])
30
31 # Handle BISON_USE_PUSH_FOR_PULL for the test suite. So that push parsing
32 # tests function as written, don't let BISON_USE_PUSH_FOR_PULL modify Bison's
33 # behavior at all when push parsing is already requested.
34 b4_define_flag_if([use_push_for_pull])
35 b4_use_push_for_pull_if([
36 b4_push_if([m4_define([b4_use_push_for_pull_flag], [[0]])],
37 [m4_define([b4_push_flag], [[1]])])])
38
39 m4_include(b4_pkgdatadir/[c.m4])
40
41 ## ---------------- ##
42 ## Default values. ##
43 ## ---------------- ##
44
45 # Stack parameters.
46 m4_define_default([b4_stack_depth_max], [10000])
47 m4_define_default([b4_stack_depth_init], [200])
48
49
50 ## ------------------------ ##
51 ## Pure/impure interfaces. ##
52 ## ------------------------ ##
53
54 b4_percent_define_default([[api.pure]], [[false]])
55 b4_define_flag_if([pure])
56 m4_define([b4_pure_flag],
57 [b4_percent_define_flag_if([[api.pure]], [[1]], [[0]])])
58
59 # b4_yacc_pure_if(IF-TRUE, IF-FALSE)
60 # ----------------------------------
61 # Expand IF-TRUE, if %pure-parser and %parse-param, IF-FALSE otherwise.
62 m4_define([b4_yacc_pure_if],
63 [b4_pure_if([m4_ifset([b4_parse_param],
64 [$1], [$2])],
65 [$2])])
66
67
68 # b4_yyerror_args
69 # ---------------
70 # Arguments passed to yyerror: user args plus yylloc.
71 m4_define([b4_yyerror_args],
72 [b4_yacc_pure_if([b4_locations_if([&yylloc, ])])dnl
73 m4_ifset([b4_parse_param], [b4_c_args(b4_parse_param), ])])
74
75
76 # b4_lex_param
77 # ------------
78 # Accumulate in b4_lex_param all the yylex arguments.
79 # b4_lex_param arrives quoted twice, but we want to keep only one level.
80 m4_define([b4_lex_param],
81 m4_dquote(b4_pure_if([[[[YYSTYPE *]], [[&yylval]]][]dnl
82 b4_locations_if([, [[YYLTYPE *], [&yylloc]]])m4_ifdef([b4_lex_param], [, ])])dnl
83 m4_ifdef([b4_lex_param], b4_lex_param)))
84
85
86 ## ------------ ##
87 ## Data Types. ##
88 ## ------------ ##
89
90 # b4_int_type(MIN, MAX)
91 # ---------------------
92 # Return the smallest int type able to handle numbers ranging from
93 # MIN to MAX (included). Overwrite the version from c.m4, which
94 # uses only C89 types, so that the user can override the shorter
95 # types, and so that pre-C89 compilers are handled correctly.
96 m4_define([b4_int_type],
97 [m4_if(b4_ints_in($@, [0], [255]), [1], [yytype_uint8],
98 b4_ints_in($@, [-128], [127]), [1], [yytype_int8],
99
100 b4_ints_in($@, [0], [65535]), [1], [yytype_uint16],
101 b4_ints_in($@, [-32768], [32767]), [1], [yytype_int16],
102
103 m4_eval([0 <= $1]), [1], [unsigned int],
104
105 [int])])
106
107
108 ## ----------------- ##
109 ## Semantic Values. ##
110 ## ----------------- ##
111
112
113 # b4_lhs_value([TYPE])
114 # --------------------
115 # Expansion of $<TYPE>$.
116 m4_define([b4_lhs_value],
117 [(yyval[]m4_ifval([$1], [.$1]))])
118
119
120 # b4_rhs_value(RULE-LENGTH, NUM, [TYPE])
121 # --------------------------------------
122 # Expansion of $<TYPE>NUM, where the current rule has RULE-LENGTH
123 # symbols on RHS.
124 m4_define([b4_rhs_value],
125 [(yyvsp@{($2) - ($1)@}m4_ifval([$3], [.$3]))])
126
127
128
129 ## ----------- ##
130 ## Locations. ##
131 ## ----------- ##
132
133 # b4_lhs_location()
134 # -----------------
135 # Expansion of @$.
136 m4_define([b4_lhs_location],
137 [(yyloc)])
138
139
140 # b4_rhs_location(RULE-LENGTH, NUM)
141 # ---------------------------------
142 # Expansion of @NUM, where the current rule has RULE-LENGTH symbols
143 # on RHS.
144 m4_define([b4_rhs_location],
145 [(yylsp@{($2) - ($1)@})])
146
147
148 ## ------------------ ##
149 ## Parser variables. ##
150 ## ------------------ ##
151
152 # b4_declare_scanner_communication_variables
153 # ------------------------------------------
154 # Declare the variables that are global, or local to YYPARSE if
155 # pure-parser.
156 m4_define([b4_declare_scanner_communication_variables], [[
157 /* The lookahead symbol. */
158 int yychar;
159
160 /* The semantic value of the lookahead symbol. */
161 YYSTYPE yylval;]b4_locations_if([[
162
163 /* Location data for the lookahead symbol. */
164 YYLTYPE yylloc;]])b4_pure_if([], [[
165
166 /* Number of syntax errors so far. */
167 int yynerrs;]])])
168
169
170 # b4_declare_parser_state_variables
171 # ---------------------------------
172 # Declare all the variables that are needed to maintain the parser state
173 # between calls to yypush_parse.
174 m4_define([b4_declare_parser_state_variables], [b4_pure_if([[
175 /* Number of syntax errors so far. */
176 int yynerrs;
177 ]])[
178 int yystate;
179 /* Number of tokens to shift before error messages enabled. */
180 int yyerrstatus;
181
182 /* The stacks and their tools:
183 `yyss': related to states.
184 `yyvs': related to semantic values.]b4_locations_if([[
185 `yyls': related to locations.]])[
186
187 Refer to the stacks thru separate pointers, to allow yyoverflow
188 to reallocate them elsewhere. */
189
190 /* The state stack. */
191 yytype_int16 yyssa[YYINITDEPTH];
192 yytype_int16 *yyss;
193 yytype_int16 *yyssp;
194
195 /* The semantic value stack. */
196 YYSTYPE yyvsa[YYINITDEPTH];
197 YYSTYPE *yyvs;
198 YYSTYPE *yyvsp;]b4_locations_if([[
199
200 /* The location stack. */
201 YYLTYPE yylsa[YYINITDEPTH];
202 YYLTYPE *yyls;
203 YYLTYPE *yylsp;
204
205 /* The locations where the error started and ended. */
206 YYLTYPE yyerror_range[2];]])[
207
208 YYSIZE_T yystacksize;]])
209
210
211 ## --------------------------------------------------------- ##
212 ## Defining symbol actions, e.g., printers and destructors. ##
213 ## --------------------------------------------------------- ##
214
215 # We do want M4 expansion after # for CPP macros.
216 m4_changecom()
217 m4_divert_push(0)dnl
218 @output(b4_parser_file_name@)@
219 b4_copyright([Skeleton implementation for Bison's Yacc-like parsers in C],
220 [1984, 1989, 1990, 2000, 2001, 2002, 2003, 2004, 2005,
221 2006, 2007, 2008, 2009])[
222
223 /* C LALR(1) parser skeleton written by Richard Stallman, by
224 simplifying the original so-called "semantic" parser. */
225
226 /* All symbols defined below should begin with yy or YY, to avoid
227 infringing on user name space. This should be done even for local
228 variables, as they might otherwise be expanded by user macros.
229 There are some unavoidable exceptions within include files to
230 define necessary library symbols; they are noted "INFRINGES ON
231 USER NAME SPACE" below. */
232
233 ]b4_identification
234 b4_percent_code_get([[top]])[]dnl
235 m4_if(b4_prefix, [yy], [],
236 [[/* Substitute the variable and function names. */]b4_pull_if([[
237 #define yyparse ]b4_prefix[parse]])b4_push_if([[
238 #define yypush_parse ]b4_prefix[push_parse]b4_pull_if([[
239 #define yypull_parse ]b4_prefix[pull_parse]])[
240 #define yypstate_new ]b4_prefix[pstate_new
241 #define yypstate_delete ]b4_prefix[pstate_delete
242 #define yypstate ]b4_prefix[pstate]])[
243 #define yylex ]b4_prefix[lex
244 #define yyerror ]b4_prefix[error
245 #define yylval ]b4_prefix[lval
246 #define yychar ]b4_prefix[char
247 #define yydebug ]b4_prefix[debug
248 #define yynerrs ]b4_prefix[nerrs
249 ]b4_locations_if([[#define yylloc ]b4_prefix[lloc]])])[
250
251 /* Copy the first part of user declarations. */
252 ]b4_user_pre_prologue[
253
254 /* Enabling traces. */
255 #ifndef YYDEBUG
256 # define YYDEBUG ]b4_debug_flag[
257 #endif
258
259 /* Enabling verbose error messages. */
260 #ifdef YYERROR_VERBOSE
261 # undef YYERROR_VERBOSE
262 # define YYERROR_VERBOSE 1
263 #else
264 # define YYERROR_VERBOSE ]b4_error_verbose_flag[
265 #endif
266
267 /* Enabling the token table. */
268 #ifndef YYTOKEN_TABLE
269 # define YYTOKEN_TABLE ]b4_token_table[
270 #endif
271
272 ]b4_percent_code_get([[requires]])[]dnl
273
274 b4_token_enums_defines(b4_tokens)[
275
276 #if ! defined YYSTYPE && ! defined YYSTYPE_IS_DECLARED
277 ]m4_ifdef([b4_stype],
278 [[typedef union ]b4_union_name[
279 {
280 ]b4_user_stype[
281 } YYSTYPE;
282 # define YYSTYPE_IS_TRIVIAL 1]],
283 [m4_if(b4_tag_seen_flag, 0,
284 [[typedef int YYSTYPE;
285 # define YYSTYPE_IS_TRIVIAL 1]])])[
286 # define yystype YYSTYPE /* obsolescent; will be withdrawn */
287 # define YYSTYPE_IS_DECLARED 1
288 #endif]b4_locations_if([[
289
290 #if ! defined YYLTYPE && ! defined YYLTYPE_IS_DECLARED
291 typedef struct YYLTYPE
292 {
293 int first_line;
294 int first_column;
295 int last_line;
296 int last_column;
297 } YYLTYPE;
298 # define yyltype YYLTYPE /* obsolescent; will be withdrawn */
299 # define YYLTYPE_IS_DECLARED 1
300 # define YYLTYPE_IS_TRIVIAL 1
301 #endif]])b4_push_if([[
302
303 #ifndef YYPUSH_DECLS
304 # define YYPUSH_DECLS
305 struct yypstate;
306 typedef struct yypstate yypstate;
307 enum { YYPUSH_MORE = 4 };
308
309 ]b4_pull_if([b4_c_function_decl([[yyparse]], [[int]], b4_parse_param)
310 ])b4_c_function_decl([[yypush_parse]], [[int]],
311 [[[yypstate *yyps]], [[yyps]]]b4_pure_if([,
312 [[[int yypushed_char]], [[yypushed_char]]],
313 [[[YYSTYPE const *yypushed_val]], [[yypushed_val]]]b4_locations_if([,
314 [[[YYLTYPE const *yypushed_loc]], [[yypushed_loc]]]])])m4_ifset([b4_parse_param], [,
315 b4_parse_param]))
316 b4_pull_if([b4_c_function_decl([[yypull_parse]], [[int]],
317 [[[yypstate *yyps]], [[yyps]]]m4_ifset([b4_parse_param], [,
318 b4_parse_param]))])
319 b4_c_function_decl([[yypstate_new]], [[yypstate *]], [[[void]], []])
320 b4_c_function_decl([[yypstate_delete]], [[void]],
321 [[[yypstate *yyps]], [[yyps]]])[
322 #endif]])
323
324 b4_percent_code_get([[provides]])[]dnl
325
326 [/* Copy the second part of user declarations. */
327 ]b4_user_post_prologue
328 b4_percent_code_get[]dnl
329
330 [#ifdef short
331 # undef short
332 #endif
333
334 #ifdef YYTYPE_UINT8
335 typedef YYTYPE_UINT8 yytype_uint8;
336 #else
337 typedef unsigned char yytype_uint8;
338 #endif
339
340 #ifdef YYTYPE_INT8
341 typedef YYTYPE_INT8 yytype_int8;
342 #elif ]b4_c_modern[
343 typedef signed char yytype_int8;
344 #else
345 typedef short int yytype_int8;
346 #endif
347
348 #ifdef YYTYPE_UINT16
349 typedef YYTYPE_UINT16 yytype_uint16;
350 #else
351 typedef unsigned short int yytype_uint16;
352 #endif
353
354 #ifdef YYTYPE_INT16
355 typedef YYTYPE_INT16 yytype_int16;
356 #else
357 typedef short int yytype_int16;
358 #endif
359
360 #ifndef YYSIZE_T
361 # ifdef __SIZE_TYPE__
362 # define YYSIZE_T __SIZE_TYPE__
363 # elif defined size_t
364 # define YYSIZE_T size_t
365 # elif ! defined YYSIZE_T && ]b4_c_modern[
366 # include <stddef.h> /* INFRINGES ON USER NAME SPACE */
367 # define YYSIZE_T size_t
368 # else
369 # define YYSIZE_T unsigned int
370 # endif
371 #endif
372
373 #define YYSIZE_MAXIMUM ((YYSIZE_T) -1)
374
375 #ifndef YY_
376 # if defined YYENABLE_NLS && YYENABLE_NLS
377 # if ENABLE_NLS
378 # include <libintl.h> /* INFRINGES ON USER NAME SPACE */
379 # define YY_(msgid) dgettext ("bison-runtime", msgid)
380 # endif
381 # endif
382 # ifndef YY_
383 # define YY_(msgid) msgid
384 # endif
385 #endif
386
387 /* Suppress unused-variable warnings by "using" E. */
388 #if ! defined lint || defined __GNUC__
389 # define YYUSE(e) ((void) (e))
390 #else
391 # define YYUSE(e) /* empty */
392 #endif
393
394 /* Identity function, used to suppress warnings about constant conditions. */
395 #ifndef lint
396 # define YYID(n) (n)
397 #else
398 ]b4_c_function_def([YYID], [static int], [[int yyi], [yyi]])[
399 {
400 return yyi;
401 }
402 #endif
403
404 #if ! defined yyoverflow || YYERROR_VERBOSE
405
406 ]b4_push_if([],
407 [[/* The parser invokes alloca or malloc; define the necessary symbols. */
408
409 # ifdef YYSTACK_USE_ALLOCA
410 # if YYSTACK_USE_ALLOCA
411 # ifdef __GNUC__
412 # define YYSTACK_ALLOC __builtin_alloca
413 # elif defined __BUILTIN_VA_ARG_INCR
414 # include <alloca.h> /* INFRINGES ON USER NAME SPACE */
415 # elif defined _AIX
416 # define YYSTACK_ALLOC __alloca
417 # elif defined _MSC_VER
418 # include <malloc.h> /* INFRINGES ON USER NAME SPACE */
419 # define alloca _alloca
420 # else
421 # define YYSTACK_ALLOC alloca
422 # if ! defined _ALLOCA_H && ! defined _STDLIB_H && ]b4_c_modern[
423 # include <stdlib.h> /* INFRINGES ON USER NAME SPACE */
424 # ifndef _STDLIB_H
425 # define _STDLIB_H 1
426 # endif
427 # endif
428 # endif
429 # endif
430 # endif
431
432 ]])dnl
433 [# ifdef YYSTACK_ALLOC
434 /* Pacify GCC's `empty if-body' warning. */
435 # define YYSTACK_FREE(Ptr) do { /* empty */; } while (YYID (0))
436 # ifndef YYSTACK_ALLOC_MAXIMUM
437 /* The OS might guarantee only one guard page at the bottom of the stack,
438 and a page size can be as small as 4096 bytes. So we cannot safely
439 invoke alloca (N) if N exceeds 4096. Use a slightly smaller number
440 to allow for a few compiler-allocated temporary stack slots. */
441 # define YYSTACK_ALLOC_MAXIMUM 4032 /* reasonable circa 2006 */
442 # endif
443 # else
444 # define YYSTACK_ALLOC YYMALLOC
445 # define YYSTACK_FREE YYFREE
446 # ifndef YYSTACK_ALLOC_MAXIMUM
447 # define YYSTACK_ALLOC_MAXIMUM YYSIZE_MAXIMUM
448 # endif
449 # if (defined __cplusplus && ! defined _STDLIB_H \
450 && ! ((defined YYMALLOC || defined malloc) \
451 && (defined YYFREE || defined free)))
452 # include <stdlib.h> /* INFRINGES ON USER NAME SPACE */
453 # ifndef _STDLIB_H
454 # define _STDLIB_H 1
455 # endif
456 # endif
457 # ifndef YYMALLOC
458 # define YYMALLOC malloc
459 # if ! defined malloc && ! defined _STDLIB_H && ]b4_c_modern[
460 void *malloc (YYSIZE_T); /* INFRINGES ON USER NAME SPACE */
461 # endif
462 # endif
463 # ifndef YYFREE
464 # define YYFREE free
465 # if ! defined free && ! defined _STDLIB_H && ]b4_c_modern[
466 void free (void *); /* INFRINGES ON USER NAME SPACE */
467 # endif
468 # endif
469 # endif
470 #endif /* ! defined yyoverflow || YYERROR_VERBOSE */
471
472
473 #if (! defined yyoverflow \
474 && (! defined __cplusplus \
475 || (]b4_locations_if([[defined YYLTYPE_IS_TRIVIAL && YYLTYPE_IS_TRIVIAL \
476 && ]])[defined YYSTYPE_IS_TRIVIAL && YYSTYPE_IS_TRIVIAL)))
477
478 /* A type that is properly aligned for any stack member. */
479 union yyalloc
480 {
481 yytype_int16 yyss_alloc;
482 YYSTYPE yyvs_alloc;]b4_locations_if([
483 YYLTYPE yyls_alloc;])[
484 };
485
486 /* The size of the maximum gap between one aligned stack and the next. */
487 # define YYSTACK_GAP_MAXIMUM (sizeof (union yyalloc) - 1)
488
489 /* The size of an array large to enough to hold all stacks, each with
490 N elements. */
491 ]b4_locations_if(
492 [# define YYSTACK_BYTES(N) \
493 ((N) * (sizeof (yytype_int16) + sizeof (YYSTYPE) + sizeof (YYLTYPE)) \
494 + 2 * YYSTACK_GAP_MAXIMUM)],
495 [# define YYSTACK_BYTES(N) \
496 ((N) * (sizeof (yytype_int16) + sizeof (YYSTYPE)) \
497 + YYSTACK_GAP_MAXIMUM)])[
498
499 /* Copy COUNT objects from FROM to TO. The source and destination do
500 not overlap. */
501 # ifndef YYCOPY
502 # if defined __GNUC__ && 1 < __GNUC__
503 # define YYCOPY(To, From, Count) \
504 __builtin_memcpy (To, From, (Count) * sizeof (*(From)))
505 # else
506 # define YYCOPY(To, From, Count) \
507 do \
508 { \
509 YYSIZE_T yyi; \
510 for (yyi = 0; yyi < (Count); yyi++) \
511 (To)[yyi] = (From)[yyi]; \
512 } \
513 while (YYID (0))
514 # endif
515 # endif
516
517 /* Relocate STACK from its old location to the new one. The
518 local variables YYSIZE and YYSTACKSIZE give the old and new number of
519 elements in the stack, and YYPTR gives the new location of the
520 stack. Advance YYPTR to a properly aligned location for the next
521 stack. */
522 # define YYSTACK_RELOCATE(Stack_alloc, Stack) \
523 do \
524 { \
525 YYSIZE_T yynewbytes; \
526 YYCOPY (&yyptr->Stack_alloc, Stack, yysize); \
527 Stack = &yyptr->Stack_alloc; \
528 yynewbytes = yystacksize * sizeof (*Stack) + YYSTACK_GAP_MAXIMUM; \
529 yyptr += yynewbytes / sizeof (*yyptr); \
530 } \
531 while (YYID (0))
532
533 #endif
534
535 /* YYFINAL -- State number of the termination state. */
536 #define YYFINAL ]b4_final_state_number[
537 /* YYLAST -- Last index in YYTABLE. */
538 #define YYLAST ]b4_last[
539
540 /* YYNTOKENS -- Number of terminals. */
541 #define YYNTOKENS ]b4_tokens_number[
542 /* YYNNTS -- Number of nonterminals. */
543 #define YYNNTS ]b4_nterms_number[
544 /* YYNRULES -- Number of rules. */
545 #define YYNRULES ]b4_rules_number[
546 /* YYNRULES -- Number of states. */
547 #define YYNSTATES ]b4_states_number[
548
549 /* YYTRANSLATE(YYLEX) -- Bison symbol number corresponding to YYLEX. */
550 #define YYUNDEFTOK ]b4_undef_token_number[
551 #define YYMAXUTOK ]b4_user_token_number_max[
552
553 #define YYTRANSLATE(YYX) \
554 ((unsigned int) (YYX) <= YYMAXUTOK ? yytranslate[YYX] : YYUNDEFTOK)
555
556 /* YYTRANSLATE[YYLEX] -- Bison symbol number corresponding to YYLEX. */
557 static const ]b4_int_type_for([b4_translate])[ yytranslate[] =
558 {
559 ]b4_translate[
560 };
561
562 #if YYDEBUG
563 /* YYPRHS[YYN] -- Index of the first RHS symbol of rule number YYN in
564 YYRHS. */
565 static const ]b4_int_type_for([b4_prhs])[ yyprhs[] =
566 {
567 ]b4_prhs[
568 };
569
570 /* YYRHS -- A `-1'-separated list of the rules' RHS. */
571 static const ]b4_int_type_for([b4_rhs])[ yyrhs[] =
572 {
573 ]b4_rhs[
574 };
575
576 /* YYRLINE[YYN] -- source line where rule number YYN was defined. */
577 static const ]b4_int_type_for([b4_rline])[ yyrline[] =
578 {
579 ]b4_rline[
580 };
581 #endif
582
583 #if YYDEBUG || YYERROR_VERBOSE || YYTOKEN_TABLE
584 /* YYTNAME[SYMBOL-NUM] -- String name of the symbol SYMBOL-NUM.
585 First, the terminals, then, starting at YYNTOKENS, nonterminals. */
586 static const char *const yytname[] =
587 {
588 ]b4_tname[
589 };
590 #endif
591
592 # ifdef YYPRINT
593 /* YYTOKNUM[YYLEX-NUM] -- Internal token number corresponding to
594 token YYLEX-NUM. */
595 static const ]b4_int_type_for([b4_toknum])[ yytoknum[] =
596 {
597 ]b4_toknum[
598 };
599 # endif
600
601 /* YYR1[YYN] -- Symbol number of symbol that rule YYN derives. */
602 static const ]b4_int_type_for([b4_r1])[ yyr1[] =
603 {
604 ]b4_r1[
605 };
606
607 /* YYR2[YYN] -- Number of symbols composing right hand side of rule YYN. */
608 static const ]b4_int_type_for([b4_r2])[ yyr2[] =
609 {
610 ]b4_r2[
611 };
612
613 /* YYDEFACT[STATE-NAME] -- Default reduction number in state STATE-NUM.
614 Performed when YYTABLE doesn't specify something else to do. Zero
615 means the default is an error. */
616 static const ]b4_int_type_for([b4_defact])[ yydefact[] =
617 {
618 ]b4_defact[
619 };
620
621 /* YYDEFGOTO[NTERM-NUM]. */
622 static const ]b4_int_type_for([b4_defgoto])[ yydefgoto[] =
623 {
624 ]b4_defgoto[
625 };
626
627 /* YYPACT[STATE-NUM] -- Index in YYTABLE of the portion describing
628 STATE-NUM. */
629 #define YYPACT_NINF ]b4_pact_ninf[
630 static const ]b4_int_type_for([b4_pact])[ yypact[] =
631 {
632 ]b4_pact[
633 };
634
635 /* YYPGOTO[NTERM-NUM]. */
636 static const ]b4_int_type_for([b4_pgoto])[ yypgoto[] =
637 {
638 ]b4_pgoto[
639 };
640
641 /* YYTABLE[YYPACT[STATE-NUM]]. What to do in state STATE-NUM. If
642 positive, shift that token. If negative, reduce the rule which
643 number is the opposite. If YYTABLE_NINF, syntax error. */
644 #define YYTABLE_NINF ]b4_table_ninf[
645 static const ]b4_int_type_for([b4_table])[ yytable[] =
646 {
647 ]b4_table[
648 };
649
650 #define yypact_value_is_default(yystate) \
651 ]b4_table_value_equals([[pact]], [[yystate]], [b4_pact_ninf])[
652
653 #define yytable_value_is_error(yytable_value) \
654 ]b4_table_value_equals([[table]], [[yytable_value]], [b4_table_ninf])[
655
656 static const ]b4_int_type_for([b4_check])[ yycheck[] =
657 {
658 ]b4_check[
659 };
660
661 /* YYSTOS[STATE-NUM] -- The (internal number of the) accessing
662 symbol of state STATE-NUM. */
663 static const ]b4_int_type_for([b4_stos])[ yystos[] =
664 {
665 ]b4_stos[
666 };
667
668 #define yyerrok (yyerrstatus = 0)
669 #define yyclearin (yychar = YYEMPTY)
670 #define YYEMPTY (-2)
671 #define YYEOF 0
672
673 #define YYACCEPT goto yyacceptlab
674 #define YYABORT goto yyabortlab
675 #define YYERROR goto yyerrorlab
676
677
678 /* Like YYERROR except do call yyerror. This remains here temporarily
679 to ease the transition to the new meaning of YYERROR, for GCC.
680 Once GCC version 2 has supplanted version 1, this can go. However,
681 YYFAIL appears to be in use. Nevertheless, it is formally deprecated
682 in Bison 2.4.2's NEWS entry, where a plan to phase it out is
683 discussed. */
684
685 #define YYFAIL goto yyerrlab
686 #if defined YYFAIL
687 /* This is here to suppress warnings from the GCC cpp's
688 -Wunused-macros. Normally we don't worry about that warning, but
689 some users do, and we want to make it easy for users to remove
690 YYFAIL uses, which will produce warnings from Bison 2.5. */
691 #endif
692
693 #define YYRECOVERING() (!!yyerrstatus)
694
695 #define YYBACKUP(Token, Value) \
696 do \
697 if (yychar == YYEMPTY && yylen == 1) \
698 { \
699 yychar = (Token); \
700 yylval = (Value); \
701 yytoken = YYTRANSLATE (yychar); \
702 YYPOPSTACK (1); \
703 goto yybackup; \
704 } \
705 else \
706 { \
707 yyerror (]b4_yyerror_args[YY_("syntax error: cannot back up")); \
708 YYERROR; \
709 } \
710 while (YYID (0))
711
712
713 #define YYTERROR 1
714 #define YYERRCODE 256
715
716
717 /* YYLLOC_DEFAULT -- Set CURRENT to span from RHS[1] to RHS[N].
718 If N is 0, then set CURRENT to the empty location which ends
719 the previous symbol: RHS[0] (always defined). */
720
721 #define YYRHSLOC(Rhs, K) ((Rhs)[K])
722 #ifndef YYLLOC_DEFAULT
723 # define YYLLOC_DEFAULT(Current, Rhs, N) \
724 do \
725 if (YYID (N)) \
726 { \
727 (Current).first_line = YYRHSLOC (Rhs, 1).first_line; \
728 (Current).first_column = YYRHSLOC (Rhs, 1).first_column; \
729 (Current).last_line = YYRHSLOC (Rhs, N).last_line; \
730 (Current).last_column = YYRHSLOC (Rhs, N).last_column; \
731 } \
732 else \
733 { \
734 (Current).first_line = (Current).last_line = \
735 YYRHSLOC (Rhs, 0).last_line; \
736 (Current).first_column = (Current).last_column = \
737 YYRHSLOC (Rhs, 0).last_column; \
738 } \
739 while (YYID (0))
740 #endif]b4_locations_if([[
741
742
743 /* YY_LOCATION_PRINT -- Print the location on the stream.
744 This macro was not mandated originally: define only if we know
745 we won't break user code: when these are the locations we know. */
746
747 #ifndef YY_LOCATION_PRINT
748 # if defined YYLTYPE_IS_TRIVIAL && YYLTYPE_IS_TRIVIAL
749 # define YY_LOCATION_PRINT(File, Loc) \
750 fprintf (File, "%d.%d-%d.%d", \
751 (Loc).first_line, (Loc).first_column, \
752 (Loc).last_line, (Loc).last_column)
753 # else
754 # define YY_LOCATION_PRINT(File, Loc) ((void) 0)
755 # endif
756 #endif]], [[
757
758
759 /* This macro is provided for backward compatibility. */
760
761 #ifndef YY_LOCATION_PRINT
762 # define YY_LOCATION_PRINT(File, Loc) ((void) 0)
763 #endif]])[
764
765
766 /* YYLEX -- calling `yylex' with the right arguments. */
767
768 #ifdef YYLEX_PARAM
769 # define YYLEX yylex (]b4_pure_if([&yylval[]b4_locations_if([, &yylloc]), ])[YYLEX_PARAM)
770 #else
771 # define YYLEX ]b4_c_function_call([yylex], [int], b4_lex_param)[
772 #endif
773
774 /* Enable debugging if requested. */
775 #if YYDEBUG
776
777 # ifndef YYFPRINTF
778 # include <stdio.h> /* INFRINGES ON USER NAME SPACE */
779 # define YYFPRINTF fprintf
780 # endif
781
782 # define YYDPRINTF(Args) \
783 do { \
784 if (yydebug) \
785 YYFPRINTF Args; \
786 } while (YYID (0))
787
788 # define YY_SYMBOL_PRINT(Title, Type, Value, Location) \
789 do { \
790 if (yydebug) \
791 { \
792 YYFPRINTF (stderr, "%s ", Title); \
793 yy_symbol_print (stderr, \
794 Type, Value]b4_locations_if([, Location])[]b4_user_args[); \
795 YYFPRINTF (stderr, "\n"); \
796 } \
797 } while (YYID (0))
798
799 ]b4_yy_symbol_print_generate([b4_c_function_def])[
800
801 /*------------------------------------------------------------------.
802 | yy_stack_print -- Print the state stack from its BOTTOM up to its |
803 | TOP (included). |
804 `------------------------------------------------------------------*/
805
806 ]b4_c_function_def([yy_stack_print], [static void],
807 [[yytype_int16 *yybottom], [yybottom]],
808 [[yytype_int16 *yytop], [yytop]])[
809 {
810 YYFPRINTF (stderr, "Stack now");
811 for (; yybottom <= yytop; yybottom++)
812 {
813 int yybot = *yybottom;
814 YYFPRINTF (stderr, " %d", yybot);
815 }
816 YYFPRINTF (stderr, "\n");
817 }
818
819 # define YY_STACK_PRINT(Bottom, Top) \
820 do { \
821 if (yydebug) \
822 yy_stack_print ((Bottom), (Top)); \
823 } while (YYID (0))
824
825
826 /*------------------------------------------------.
827 | Report that the YYRULE is going to be reduced. |
828 `------------------------------------------------*/
829
830 ]b4_c_function_def([yy_reduce_print], [static void],
831 [[YYSTYPE *yyvsp], [yyvsp]],
832 b4_locations_if([[[YYLTYPE *yylsp], [yylsp]],
833 ])[[int yyrule], [yyrule]]m4_ifset([b4_parse_param], [,
834 b4_parse_param]))[
835 {
836 int yynrhs = yyr2[yyrule];
837 int yyi;
838 unsigned long int yylno = yyrline[yyrule];
839 YYFPRINTF (stderr, "Reducing stack by rule %d (line %lu):\n",
840 yyrule - 1, yylno);
841 /* The symbols being reduced. */
842 for (yyi = 0; yyi < yynrhs; yyi++)
843 {
844 YYFPRINTF (stderr, " $%d = ", yyi + 1);
845 yy_symbol_print (stderr, yyrhs[yyprhs[yyrule] + yyi],
846 &]b4_rhs_value(yynrhs, yyi + 1)[
847 ]b4_locations_if([, &]b4_rhs_location(yynrhs, yyi + 1))[]dnl
848 b4_user_args[);
849 YYFPRINTF (stderr, "\n");
850 }
851 }
852
853 # define YY_REDUCE_PRINT(Rule) \
854 do { \
855 if (yydebug) \
856 yy_reduce_print (yyvsp, ]b4_locations_if([yylsp, ])[Rule]b4_user_args[); \
857 } while (YYID (0))
858
859 /* Nonzero means print parse trace. It is left uninitialized so that
860 multiple parsers can coexist. */
861 int yydebug;
862 #else /* !YYDEBUG */
863 # define YYDPRINTF(Args)
864 # define YY_SYMBOL_PRINT(Title, Type, Value, Location)
865 # define YY_STACK_PRINT(Bottom, Top)
866 # define YY_REDUCE_PRINT(Rule)
867 #endif /* !YYDEBUG */
868
869
870 /* YYINITDEPTH -- initial size of the parser's stacks. */
871 #ifndef YYINITDEPTH
872 # define YYINITDEPTH ]b4_stack_depth_init[
873 #endif
874
875 /* YYMAXDEPTH -- maximum size the stacks can grow to (effective only
876 if the built-in stack extension method is used).
877
878 Do not make this value too large; the results are undefined if
879 YYSTACK_ALLOC_MAXIMUM < YYSTACK_BYTES (YYMAXDEPTH)
880 evaluated with infinite-precision integer arithmetic. */
881
882 #ifndef YYMAXDEPTH
883 # define YYMAXDEPTH ]b4_stack_depth_max[
884 #endif
885
886 \f
887
888 #if YYERROR_VERBOSE
889
890 # ifndef yystrlen
891 # if defined __GLIBC__ && defined _STRING_H
892 # define yystrlen strlen
893 # else
894 /* Return the length of YYSTR. */
895 ]b4_c_function_def([yystrlen], [static YYSIZE_T],
896 [[const char *yystr], [yystr]])[
897 {
898 YYSIZE_T yylen;
899 for (yylen = 0; yystr[yylen]; yylen++)
900 continue;
901 return yylen;
902 }
903 # endif
904 # endif
905
906 # ifndef yystpcpy
907 # if defined __GLIBC__ && defined _STRING_H && defined _GNU_SOURCE
908 # define yystpcpy stpcpy
909 # else
910 /* Copy YYSRC to YYDEST, returning the address of the terminating '\0' in
911 YYDEST. */
912 ]b4_c_function_def([yystpcpy], [static char *],
913 [[char *yydest], [yydest]], [[const char *yysrc], [yysrc]])[
914 {
915 char *yyd = yydest;
916 const char *yys = yysrc;
917
918 while ((*yyd++ = *yys++) != '\0')
919 continue;
920
921 return yyd - 1;
922 }
923 # endif
924 # endif
925
926 # ifndef yytnamerr
927 /* Copy to YYRES the contents of YYSTR after stripping away unnecessary
928 quotes and backslashes, so that it's suitable for yyerror. The
929 heuristic is that double-quoting is unnecessary unless the string
930 contains an apostrophe, a comma, or backslash (other than
931 backslash-backslash). YYSTR is taken from yytname. If YYRES is
932 null, do not copy; instead, return the length of what the result
933 would have been. */
934 static YYSIZE_T
935 yytnamerr (char *yyres, const char *yystr)
936 {
937 if (*yystr == '"')
938 {
939 YYSIZE_T yyn = 0;
940 char const *yyp = yystr;
941
942 for (;;)
943 switch (*++yyp)
944 {
945 case '\'':
946 case ',':
947 goto do_not_strip_quotes;
948
949 case '\\':
950 if (*++yyp != '\\')
951 goto do_not_strip_quotes;
952 /* Fall through. */
953 default:
954 if (yyres)
955 yyres[yyn] = *yyp;
956 yyn++;
957 break;
958
959 case '"':
960 if (yyres)
961 yyres[yyn] = '\0';
962 return yyn;
963 }
964 do_not_strip_quotes: ;
965 }
966
967 if (! yyres)
968 return yystrlen (yystr);
969
970 return yystpcpy (yyres, yystr) - yyres;
971 }
972 # endif
973
974 /* Copy into *YYMSG, which is of size *YYMSG_ALLOC, an error message
975 about the unexpected token YYTOKEN while in state YYSTATE.
976
977 Return 0 if *YYMSG was successfully written. Return 1 if an ordinary
978 "syntax error" message will suffice instead. Return 2 if *YYMSG is
979 not large enough to hold the message. In the last case, also set
980 *YYMSG_ALLOC to either (a) the required number of bytes or (b) zero
981 if the required number of bytes is too large to store. */
982 static int
983 yysyntax_error (YYSIZE_T *yymsg_alloc, char **yymsg,
984 int yystate, int yytoken)
985 {
986 int yyn = yypact[yystate];
987
988 if (! (YYPACT_NINF < yyn && yyn <= YYLAST))
989 return 1;
990 else
991 {
992 YYSIZE_T yysize0 = yytnamerr (0, yytname[yytoken]);
993 YYSIZE_T yysize = yysize0;
994 YYSIZE_T yysize1;
995 enum { YYERROR_VERBOSE_ARGS_MAXIMUM = 5 };
996 /* Internationalized format string. */
997 const char *yyformat = 0;
998 /* Arguments of yyformat. */
999 char const *yyarg[YYERROR_VERBOSE_ARGS_MAXIMUM];
1000
1001 /* Start YYX at -YYN if negative to avoid negative indexes in
1002 YYCHECK. In other words, skip the first -YYN actions for this
1003 state because they are default actions. */
1004 int yyxbegin = yyn < 0 ? -yyn : 0;
1005
1006 /* Stay within bounds of both yycheck and yytname. */
1007 int yychecklim = YYLAST - yyn + 1;
1008 int yyxend = yychecklim < YYNTOKENS ? yychecklim : YYNTOKENS;
1009 /* Number of reported tokens (one for the "unexpected", one per
1010 "expected"). */
1011 int yycount = 0;
1012 int yyx;
1013
1014 yyarg[yycount++] = yytname[yytoken];
1015
1016 for (yyx = yyxbegin; yyx < yyxend; ++yyx)
1017 if (yycheck[yyx + yyn] == yyx && yyx != YYTERROR
1018 && !yytable_value_is_error (yytable[yyx + yyn]))
1019 {
1020 if (yycount == YYERROR_VERBOSE_ARGS_MAXIMUM)
1021 {
1022 yycount = 1;
1023 yysize = yysize0;
1024 break;
1025 }
1026 yyarg[yycount++] = yytname[yyx];
1027 yysize1 = yysize + yytnamerr (0, yytname[yyx]);
1028 if (! (yysize <= yysize1
1029 && yysize1 <= YYSTACK_ALLOC_MAXIMUM))
1030 {
1031 /* Overflow. */
1032 *yymsg_alloc = 0;
1033 return 2;
1034 }
1035 yysize = yysize1;
1036 }
1037
1038 switch (yycount)
1039 {
1040 #define YYCASE_(N, S) \
1041 case N: \
1042 yyformat = S; \
1043 break
1044 YYCASE_(1, YY_("syntax error, unexpected %s"));
1045 YYCASE_(2, YY_("syntax error, unexpected %s, expecting %s"));
1046 YYCASE_(3, YY_("syntax error, unexpected %s, expecting %s or %s"));
1047 YYCASE_(4, YY_("syntax error, unexpected %s, expecting %s or %s or %s"));
1048 YYCASE_(5, YY_("syntax error, unexpected %s, expecting %s or %s or %s or %s"));
1049 #undef YYCASE_
1050 }
1051
1052 yysize1 = yysize + yystrlen (yyformat);
1053 if (! (yysize <= yysize1 && yysize1 <= YYSTACK_ALLOC_MAXIMUM))
1054 {
1055 /* Overflow. */
1056 *yymsg_alloc = 0;
1057 return 2;
1058 }
1059 yysize = yysize1;
1060
1061 if (*yymsg_alloc < yysize)
1062 {
1063 *yymsg_alloc = 2 * yysize;
1064 if (! (yysize <= *yymsg_alloc
1065 && *yymsg_alloc <= YYSTACK_ALLOC_MAXIMUM))
1066 *yymsg_alloc = YYSTACK_ALLOC_MAXIMUM;
1067 return 2;
1068 }
1069
1070 /* Avoid sprintf, as that infringes on the user's name space.
1071 Don't have undefined behavior even if the translation
1072 produced a string with the wrong number of "%s"s. */
1073 {
1074 char *yyp = *yymsg;
1075 int yyi = 0;
1076 while ((*yyp = *yyformat) != '\0')
1077 if (*yyp == '%' && yyformat[1] == 's' && yyi < yycount)
1078 {
1079 yyp += yytnamerr (yyp, yyarg[yyi++]);
1080 yyformat += 2;
1081 }
1082 else
1083 {
1084 yyp++;
1085 yyformat++;
1086 }
1087 }
1088 return 0;
1089 }
1090 }
1091 #endif /* YYERROR_VERBOSE */
1092 \f
1093
1094 ]b4_yydestruct_generate([b4_c_function_def])b4_push_if([], [[
1095
1096
1097 /* Prevent warnings from -Wmissing-prototypes. */
1098 #ifdef YYPARSE_PARAM
1099 ]b4_c_function_decl([yyparse], [int],
1100 [[void *YYPARSE_PARAM], [YYPARSE_PARAM]])[
1101 #else /* ! YYPARSE_PARAM */
1102 ]b4_c_function_decl([yyparse], [int], b4_parse_param)[
1103 #endif /* ! YYPARSE_PARAM */]])b4_pure_if([], [
1104
1105 b4_declare_scanner_communication_variables])[]b4_push_if([[
1106
1107
1108 struct yypstate
1109 {]b4_declare_parser_state_variables[
1110 /* Used to determine if this is the first time this instance has
1111 been used. */
1112 int yynew;
1113 };]b4_pure_if([], [[
1114
1115 static char yypstate_allocated = 0;]])b4_pull_if([
1116
1117 b4_c_function_def([[yyparse]], [[int]], b4_parse_param)[
1118 {
1119 return yypull_parse (0]m4_ifset([b4_parse_param],
1120 [[, ]b4_c_args(b4_parse_param)])[);
1121 }
1122
1123 ]b4_c_function_def([[yypull_parse]], [[int]],
1124 [[[yypstate *yyps]], [[yyps]]]m4_ifset([b4_parse_param], [,
1125 b4_parse_param]))[
1126 {
1127 int yystatus;
1128 yypstate *yyps_local;]b4_pure_if([[
1129 int yychar;
1130 YYSTYPE yylval;]b4_locations_if([[
1131 YYLTYPE yylloc;]])])[
1132 if (yyps == 0)
1133 {
1134 yyps_local = yypstate_new ();
1135 if (!yyps_local)
1136 {]b4_pure_if([[
1137 yyerror (]b4_yyerror_args[YY_("memory exhausted"));]], [[
1138 if (!yypstate_allocated)
1139 yyerror (]b4_yyerror_args[YY_("memory exhausted"));]])[
1140 return 2;
1141 }
1142 }
1143 else
1144 yyps_local = yyps;
1145 do {
1146 yychar = YYLEX;
1147 yystatus =
1148 yypush_parse (yyps_local]b4_pure_if([[, yychar, &yylval]b4_locations_if([[, &yylloc]])])m4_ifset([b4_parse_param], [, b4_c_args(b4_parse_param)])[);
1149 } while (yystatus == YYPUSH_MORE);
1150 if (yyps == 0)
1151 yypstate_delete (yyps_local);
1152 return yystatus;
1153 }]])[
1154
1155 /* Initialize the parser data structure. */
1156 ]b4_c_function_def([[yypstate_new]], [[yypstate *]])[
1157 {
1158 yypstate *yyps;]b4_pure_if([], [[
1159 if (yypstate_allocated)
1160 return 0;]])[
1161 yyps = (yypstate *) malloc (sizeof *yyps);
1162 if (!yyps)
1163 return 0;
1164 yyps->yynew = 1;]b4_pure_if([], [[
1165 yypstate_allocated = 1;]])[
1166 return yyps;
1167 }
1168
1169 ]b4_c_function_def([[yypstate_delete]], [[void]],
1170 [[[yypstate *yyps]], [[yyps]]])[
1171 {
1172 #ifndef yyoverflow
1173 /* If the stack was reallocated but the parse did not complete, then the
1174 stack still needs to be freed. */
1175 if (!yyps->yynew && yyps->yyss != yyps->yyssa)
1176 YYSTACK_FREE (yyps->yyss);
1177 #endif
1178 free (yyps);]b4_pure_if([], [[
1179 yypstate_allocated = 0;]])[
1180 }
1181 ]b4_pure_if([[
1182 #define ]b4_prefix[nerrs yyps->]b4_prefix[nerrs]])[
1183 #define yystate yyps->yystate
1184 #define yyerrstatus yyps->yyerrstatus
1185 #define yyssa yyps->yyssa
1186 #define yyss yyps->yyss
1187 #define yyssp yyps->yyssp
1188 #define yyvsa yyps->yyvsa
1189 #define yyvs yyps->yyvs
1190 #define yyvsp yyps->yyvsp]b4_locations_if([[
1191 #define yylsa yyps->yylsa
1192 #define yyls yyps->yyls
1193 #define yylsp yyps->yylsp
1194 #define yyerror_range yyps->yyerror_range]])[
1195 #define yystacksize yyps->yystacksize
1196
1197
1198 /*---------------.
1199 | yypush_parse. |
1200 `---------------*/
1201
1202 ]b4_c_function_def([[yypush_parse]], [[int]],
1203 [[[yypstate *yyps]], [[yyps]]]b4_pure_if([,
1204 [[[int yypushed_char]], [[yypushed_char]]],
1205 [[[YYSTYPE const *yypushed_val]], [[yypushed_val]]]b4_locations_if([,
1206 [[[YYLTYPE const *yypushed_loc]], [[yypushed_loc]]]])])m4_ifset([b4_parse_param], [,
1207 b4_parse_param]))], [[
1208
1209
1210 /*----------.
1211 | yyparse. |
1212 `----------*/
1213
1214 #ifdef YYPARSE_PARAM
1215 ]b4_c_function_def([yyparse], [int],
1216 [[void *YYPARSE_PARAM], [YYPARSE_PARAM]])[
1217 #else /* ! YYPARSE_PARAM */
1218 ]b4_c_function_def([yyparse], [int], b4_parse_param)[
1219 #endif]])[
1220 {]b4_pure_if([b4_declare_scanner_communication_variables
1221 ])b4_push_if([b4_pure_if([], [[
1222 int yypushed_char = yychar;
1223 YYSTYPE yypushed_val = yylval;]b4_locations_if([[
1224 YYLTYPE yypushed_loc = yylloc;]])
1225 ])],
1226 [b4_declare_parser_state_variables
1227 ])[
1228 int yyn;
1229 int yyresult;
1230 /* Lookahead token as an internal (translated) token number. */
1231 int yytoken;
1232 /* The variables used to return semantic value and location from the
1233 action routines. */
1234 YYSTYPE yyval;]b4_locations_if([[
1235 YYLTYPE yyloc;]])[
1236
1237 #if YYERROR_VERBOSE
1238 /* Buffer for error messages, and its allocated size. */
1239 char yymsgbuf[128];
1240 char *yymsg = yymsgbuf;
1241 YYSIZE_T yymsg_alloc = sizeof yymsgbuf;
1242 #endif
1243
1244 #define YYPOPSTACK(N) (yyvsp -= (N), yyssp -= (N)]b4_locations_if([, yylsp -= (N)])[)
1245
1246 /* The number of symbols on the RHS of the reduced rule.
1247 Keep to zero when no symbol should be popped. */
1248 int yylen = 0;]b4_push_if([[
1249
1250 if (!yyps->yynew)
1251 {
1252 yyn = yypact[yystate];
1253 goto yyread_pushed_token;
1254 }]])[
1255
1256 yytoken = 0;
1257 yyss = yyssa;
1258 yyvs = yyvsa;]b4_locations_if([[
1259 yyls = yylsa;]])[
1260 yystacksize = YYINITDEPTH;
1261
1262 YYDPRINTF ((stderr, "Starting parse\n"));
1263
1264 yystate = 0;
1265 yyerrstatus = 0;
1266 yynerrs = 0;
1267 yychar = YYEMPTY; /* Cause a token to be read. */
1268
1269 /* Initialize stack pointers.
1270 Waste one element of value and location stack
1271 so that they stay on the same level as the state stack.
1272 The wasted elements are never initialized. */
1273 yyssp = yyss;
1274 yyvsp = yyvs;]b4_locations_if([[
1275 yylsp = yyls;
1276
1277 #if defined YYLTYPE_IS_TRIVIAL && YYLTYPE_IS_TRIVIAL
1278 /* Initialize the default location before parsing starts. */
1279 yylloc.first_line = yylloc.last_line = ]b4_location_initial_line[;
1280 yylloc.first_column = yylloc.last_column = ]b4_location_initial_column[;
1281 #endif]])
1282 m4_ifdef([b4_initial_action],[
1283 m4_pushdef([b4_at_dollar], [m4_define([b4_at_dollar_used])yylloc])dnl
1284 m4_pushdef([b4_dollar_dollar], [m4_define([b4_dollar_dollar_used])yylval])dnl
1285 /* User initialization code. */
1286 b4_user_initial_action
1287 m4_popdef([b4_dollar_dollar])dnl
1288 m4_popdef([b4_at_dollar])])dnl
1289 m4_ifdef([b4_dollar_dollar_used],[[ yyvsp[0] = yylval;
1290 ]])dnl
1291 m4_ifdef([b4_at_dollar_used], [[ yylsp[0] = yylloc;
1292 ]])[
1293 goto yysetstate;
1294
1295 /*------------------------------------------------------------.
1296 | yynewstate -- Push a new state, which is found in yystate. |
1297 `------------------------------------------------------------*/
1298 yynewstate:
1299 /* In all cases, when you get here, the value and location stacks
1300 have just been pushed. So pushing a state here evens the stacks. */
1301 yyssp++;
1302
1303 yysetstate:
1304 *yyssp = yystate;
1305
1306 if (yyss + yystacksize - 1 <= yyssp)
1307 {
1308 /* Get the current used size of the three stacks, in elements. */
1309 YYSIZE_T yysize = yyssp - yyss + 1;
1310
1311 #ifdef yyoverflow
1312 {
1313 /* Give user a chance to reallocate the stack. Use copies of
1314 these so that the &'s don't force the real ones into
1315 memory. */
1316 YYSTYPE *yyvs1 = yyvs;
1317 yytype_int16 *yyss1 = yyss;]b4_locations_if([
1318 YYLTYPE *yyls1 = yyls;])[
1319
1320 /* Each stack pointer address is followed by the size of the
1321 data in use in that stack, in bytes. This used to be a
1322 conditional around just the two extra args, but that might
1323 be undefined if yyoverflow is a macro. */
1324 yyoverflow (YY_("memory exhausted"),
1325 &yyss1, yysize * sizeof (*yyssp),
1326 &yyvs1, yysize * sizeof (*yyvsp),]b4_locations_if([
1327 &yyls1, yysize * sizeof (*yylsp),])[
1328 &yystacksize);
1329 ]b4_locations_if([
1330 yyls = yyls1;])[
1331 yyss = yyss1;
1332 yyvs = yyvs1;
1333 }
1334 #else /* no yyoverflow */
1335 # ifndef YYSTACK_RELOCATE
1336 goto yyexhaustedlab;
1337 # else
1338 /* Extend the stack our own way. */
1339 if (YYMAXDEPTH <= yystacksize)
1340 goto yyexhaustedlab;
1341 yystacksize *= 2;
1342 if (YYMAXDEPTH < yystacksize)
1343 yystacksize = YYMAXDEPTH;
1344
1345 {
1346 yytype_int16 *yyss1 = yyss;
1347 union yyalloc *yyptr =
1348 (union yyalloc *) YYSTACK_ALLOC (YYSTACK_BYTES (yystacksize));
1349 if (! yyptr)
1350 goto yyexhaustedlab;
1351 YYSTACK_RELOCATE (yyss_alloc, yyss);
1352 YYSTACK_RELOCATE (yyvs_alloc, yyvs);]b4_locations_if([
1353 YYSTACK_RELOCATE (yyls_alloc, yyls);])[
1354 # undef YYSTACK_RELOCATE
1355 if (yyss1 != yyssa)
1356 YYSTACK_FREE (yyss1);
1357 }
1358 # endif
1359 #endif /* no yyoverflow */
1360
1361 yyssp = yyss + yysize - 1;
1362 yyvsp = yyvs + yysize - 1;]b4_locations_if([
1363 yylsp = yyls + yysize - 1;])[
1364
1365 YYDPRINTF ((stderr, "Stack size increased to %lu\n",
1366 (unsigned long int) yystacksize));
1367
1368 if (yyss + yystacksize - 1 <= yyssp)
1369 YYABORT;
1370 }
1371
1372 YYDPRINTF ((stderr, "Entering state %d\n", yystate));
1373
1374 if (yystate == YYFINAL)
1375 YYACCEPT;
1376
1377 goto yybackup;
1378
1379 /*-----------.
1380 | yybackup. |
1381 `-----------*/
1382 yybackup:
1383
1384 /* Do appropriate processing given the current state. Read a
1385 lookahead token if we need one and don't already have one. */
1386
1387 /* First try to decide what to do without reference to lookahead token. */
1388 yyn = yypact[yystate];
1389 if (yypact_value_is_default (yyn))
1390 goto yydefault;
1391
1392 /* Not known => get a lookahead token if don't already have one. */
1393
1394 /* YYCHAR is either YYEMPTY or YYEOF or a valid lookahead symbol. */
1395 if (yychar == YYEMPTY)
1396 {]b4_push_if([[
1397 if (!yyps->yynew)
1398 {]b4_use_push_for_pull_if([], [[
1399 YYDPRINTF ((stderr, "Return for a new token:\n"));]])[
1400 yyresult = YYPUSH_MORE;
1401 goto yypushreturn;
1402 }
1403 yyps->yynew = 0;]b4_pure_if([], [[
1404 /* Restoring the pushed token is only necessary for the first
1405 yypush_parse invocation since subsequent invocations don't overwrite
1406 it before jumping to yyread_pushed_token. */
1407 yychar = yypushed_char;
1408 yylval = yypushed_val;]b4_locations_if([[
1409 yylloc = yypushed_loc;]])])[
1410 yyread_pushed_token:]])[
1411 YYDPRINTF ((stderr, "Reading a token: "));]b4_push_if([b4_pure_if([[
1412 yychar = yypushed_char;
1413 if (yypushed_val)
1414 yylval = *yypushed_val;]b4_locations_if([[
1415 if (yypushed_loc)
1416 yylloc = *yypushed_loc;]])])], [[
1417 yychar = YYLEX;]])[
1418 }
1419
1420 if (yychar <= YYEOF)
1421 {
1422 yychar = yytoken = YYEOF;
1423 YYDPRINTF ((stderr, "Now at end of input.\n"));
1424 }
1425 else
1426 {
1427 yytoken = YYTRANSLATE (yychar);
1428 YY_SYMBOL_PRINT ("Next token is", yytoken, &yylval, &yylloc);
1429 }
1430
1431 /* If the proper action on seeing token YYTOKEN is to reduce or to
1432 detect an error, take that action. */
1433 yyn += yytoken;
1434 if (yyn < 0 || YYLAST < yyn || yycheck[yyn] != yytoken)
1435 goto yydefault;
1436 yyn = yytable[yyn];
1437 if (yyn <= 0)
1438 {
1439 if (yytable_value_is_error (yyn))
1440 goto yyerrlab;
1441 yyn = -yyn;
1442 goto yyreduce;
1443 }
1444
1445 /* Count tokens shifted since error; after three, turn off error
1446 status. */
1447 if (yyerrstatus)
1448 yyerrstatus--;
1449
1450 /* Shift the lookahead token. */
1451 YY_SYMBOL_PRINT ("Shifting", yytoken, &yylval, &yylloc);
1452
1453 /* Discard the shifted token. */
1454 yychar = YYEMPTY;
1455
1456 yystate = yyn;
1457 *++yyvsp = yylval;
1458 ]b4_locations_if([ *++yylsp = yylloc;])[
1459 goto yynewstate;
1460
1461
1462 /*-----------------------------------------------------------.
1463 | yydefault -- do the default action for the current state. |
1464 `-----------------------------------------------------------*/
1465 yydefault:
1466 yyn = yydefact[yystate];
1467 if (yyn == 0)
1468 goto yyerrlab;
1469 goto yyreduce;
1470
1471
1472 /*-----------------------------.
1473 | yyreduce -- Do a reduction. |
1474 `-----------------------------*/
1475 yyreduce:
1476 /* yyn is the number of a rule to reduce with. */
1477 yylen = yyr2[yyn];
1478
1479 /* If YYLEN is nonzero, implement the default value of the action:
1480 `$$ = $1'.
1481
1482 Otherwise, the following line sets YYVAL to garbage.
1483 This behavior is undocumented and Bison
1484 users should not rely upon it. Assigning to YYVAL
1485 unconditionally makes the parser a bit smaller, and it avoids a
1486 GCC warning that YYVAL may be used uninitialized. */
1487 yyval = yyvsp[1-yylen];
1488
1489 ]b4_locations_if(
1490 [[ /* Default location. */
1491 YYLLOC_DEFAULT (yyloc, (yylsp - yylen), yylen);]])[
1492 YY_REDUCE_PRINT (yyn);
1493 switch (yyn)
1494 {
1495 ]b4_user_actions[
1496 default: break;
1497 }
1498 YY_SYMBOL_PRINT ("-> $$ =", yyr1[yyn], &yyval, &yyloc);
1499
1500 YYPOPSTACK (yylen);
1501 yylen = 0;
1502 YY_STACK_PRINT (yyss, yyssp);
1503
1504 *++yyvsp = yyval;]b4_locations_if([
1505 *++yylsp = yyloc;])[
1506
1507 /* Now `shift' the result of the reduction. Determine what state
1508 that goes to, based on the state we popped back to and the rule
1509 number reduced by. */
1510
1511 yyn = yyr1[yyn];
1512
1513 yystate = yypgoto[yyn - YYNTOKENS] + *yyssp;
1514 if (0 <= yystate && yystate <= YYLAST && yycheck[yystate] == *yyssp)
1515 yystate = yytable[yystate];
1516 else
1517 yystate = yydefgoto[yyn - YYNTOKENS];
1518
1519 goto yynewstate;
1520
1521
1522 /*------------------------------------.
1523 | yyerrlab -- here on detecting error |
1524 `------------------------------------*/
1525 yyerrlab:
1526 /* If not already recovering from an error, report this error. */
1527 if (!yyerrstatus)
1528 {
1529 ++yynerrs;
1530 #if ! YYERROR_VERBOSE
1531 yyerror (]b4_yyerror_args[YY_("syntax error"));
1532 #else
1533 while (1)
1534 {
1535 int yysyntax_error_status =
1536 yysyntax_error (&yymsg_alloc, &yymsg, yystate, yytoken);
1537 if (yysyntax_error_status == 2 && 0 < yymsg_alloc)
1538 {
1539 if (yymsg != yymsgbuf)
1540 YYSTACK_FREE (yymsg);
1541 yymsg = (char *) YYSTACK_ALLOC (yymsg_alloc);
1542 if (yymsg)
1543 continue;
1544 yymsg = yymsgbuf;
1545 yymsg_alloc = sizeof yymsgbuf;
1546 }
1547 if (yysyntax_error_status == 0)
1548 yyerror (]b4_yyerror_args[yymsg);
1549 else
1550 yyerror (]b4_yyerror_args[YY_("syntax error"));
1551 if (yysyntax_error_status == 2)
1552 goto yyexhaustedlab;
1553 break;
1554 }
1555 #endif
1556 }
1557
1558 ]b4_locations_if([[ yyerror_range[0] = yylloc;]])[
1559
1560 if (yyerrstatus == 3)
1561 {
1562 /* If just tried and failed to reuse lookahead token after an
1563 error, discard it. */
1564
1565 if (yychar <= YYEOF)
1566 {
1567 /* Return failure if at end of input. */
1568 if (yychar == YYEOF)
1569 YYABORT;
1570 }
1571 else
1572 {
1573 yydestruct ("Error: discarding",
1574 yytoken, &yylval]b4_locations_if([, &yylloc])[]b4_user_args[);
1575 yychar = YYEMPTY;
1576 }
1577 }
1578
1579 /* Else will try to reuse lookahead token after shifting the error
1580 token. */
1581 goto yyerrlab1;
1582
1583
1584 /*---------------------------------------------------.
1585 | yyerrorlab -- error raised explicitly by YYERROR. |
1586 `---------------------------------------------------*/
1587 yyerrorlab:
1588
1589 /* Pacify compilers like GCC when the user code never invokes
1590 YYERROR and the label yyerrorlab therefore never appears in user
1591 code. */
1592 if (/*CONSTCOND*/ 0)
1593 goto yyerrorlab;
1594
1595 ]b4_locations_if([[ yyerror_range[0] = yylsp[1-yylen];
1596 ]])[ /* Do not reclaim the symbols of the rule which action triggered
1597 this YYERROR. */
1598 YYPOPSTACK (yylen);
1599 yylen = 0;
1600 YY_STACK_PRINT (yyss, yyssp);
1601 yystate = *yyssp;
1602 goto yyerrlab1;
1603
1604
1605 /*-------------------------------------------------------------.
1606 | yyerrlab1 -- common code for both syntax error and YYERROR. |
1607 `-------------------------------------------------------------*/
1608 yyerrlab1:
1609 yyerrstatus = 3; /* Each real token shifted decrements this. */
1610
1611 for (;;)
1612 {
1613 yyn = yypact[yystate];
1614 if (!yypact_value_is_default (yyn))
1615 {
1616 yyn += YYTERROR;
1617 if (0 <= yyn && yyn <= YYLAST && yycheck[yyn] == YYTERROR)
1618 {
1619 yyn = yytable[yyn];
1620 if (0 < yyn)
1621 break;
1622 }
1623 }
1624
1625 /* Pop the current state because it cannot handle the error token. */
1626 if (yyssp == yyss)
1627 YYABORT;
1628
1629 ]b4_locations_if([[ yyerror_range[0] = *yylsp;]])[
1630 yydestruct ("Error: popping",
1631 yystos[yystate], yyvsp]b4_locations_if([, yylsp])[]b4_user_args[);
1632 YYPOPSTACK (1);
1633 yystate = *yyssp;
1634 YY_STACK_PRINT (yyss, yyssp);
1635 }
1636
1637 *++yyvsp = yylval;
1638 ]b4_locations_if([[
1639 yyerror_range[1] = yylloc;
1640 /* Using YYLLOC is tempting, but would change the location of
1641 the lookahead. YYLOC is available though. */
1642 YYLLOC_DEFAULT (yyloc, (yyerror_range - 1), 2);
1643 *++yylsp = yyloc;]])[
1644
1645 /* Shift the error token. */
1646 YY_SYMBOL_PRINT ("Shifting", yystos[yyn], yyvsp, yylsp);
1647
1648 yystate = yyn;
1649 goto yynewstate;
1650
1651
1652 /*-------------------------------------.
1653 | yyacceptlab -- YYACCEPT comes here. |
1654 `-------------------------------------*/
1655 yyacceptlab:
1656 yyresult = 0;
1657 goto yyreturn;
1658
1659 /*-----------------------------------.
1660 | yyabortlab -- YYABORT comes here. |
1661 `-----------------------------------*/
1662 yyabortlab:
1663 yyresult = 1;
1664 goto yyreturn;
1665
1666 #if !defined(yyoverflow) || YYERROR_VERBOSE
1667 /*-------------------------------------------------.
1668 | yyexhaustedlab -- memory exhaustion comes here. |
1669 `-------------------------------------------------*/
1670 yyexhaustedlab:
1671 yyerror (]b4_yyerror_args[YY_("memory exhausted"));
1672 yyresult = 2;
1673 /* Fall through. */
1674 #endif
1675
1676 yyreturn:
1677 if (yychar != YYEMPTY)
1678 yydestruct ("Cleanup: discarding lookahead",
1679 yytoken, &yylval]b4_locations_if([, &yylloc])[]b4_user_args[);
1680 /* Do not reclaim the symbols of the rule which action triggered
1681 this YYABORT or YYACCEPT. */
1682 YYPOPSTACK (yylen);
1683 YY_STACK_PRINT (yyss, yyssp);
1684 while (yyssp != yyss)
1685 {
1686 yydestruct ("Cleanup: popping",
1687 yystos[*yyssp], yyvsp]b4_locations_if([, yylsp])[]b4_user_args[);
1688 YYPOPSTACK (1);
1689 }
1690 #ifndef yyoverflow
1691 if (yyss != yyssa)
1692 YYSTACK_FREE (yyss);
1693 #endif]b4_push_if([[
1694 yyps->yynew = 1;
1695
1696 yypushreturn:]])[
1697 #if YYERROR_VERBOSE
1698 if (yymsg != yymsgbuf)
1699 YYSTACK_FREE (yymsg);
1700 #endif
1701 /* Make sure YYID is used. */
1702 return YYID (yyresult);
1703 }
1704
1705
1706 ]b4_epilogue
1707 b4_defines_if(
1708 [@output(b4_spec_defines_file@)@
1709 b4_copyright([Skeleton interface for Bison's Yacc-like parsers in C],
1710 [1984, 1989, 1990, 2000, 2001, 2002, 2003, 2004, 2005,
1711 2006, 2007, 2008, 2009])
1712
1713 b4_percent_code_get([[requires]])[]dnl
1714
1715 b4_token_enums_defines(b4_tokens)
1716
1717 [#if ! defined YYSTYPE && ! defined YYSTYPE_IS_DECLARED
1718 ]m4_ifdef([b4_stype],
1719 [[typedef union ]b4_union_name[
1720 {
1721 ]b4_user_stype[
1722 } YYSTYPE;
1723 # define YYSTYPE_IS_TRIVIAL 1]],
1724 [m4_if(b4_tag_seen_flag, 0,
1725 [[typedef int YYSTYPE;
1726 # define YYSTYPE_IS_TRIVIAL 1]])])[
1727 # define yystype YYSTYPE /* obsolescent; will be withdrawn */
1728 # define YYSTYPE_IS_DECLARED 1
1729 #endif
1730
1731 ]b4_pure_if([], [[extern YYSTYPE ]b4_prefix[lval;]])
1732
1733 b4_locations_if(
1734 [#if ! defined YYLTYPE && ! defined YYLTYPE_IS_DECLARED
1735 typedef struct YYLTYPE
1736 {
1737 int first_line;
1738 int first_column;
1739 int last_line;
1740 int last_column;
1741 } YYLTYPE;
1742 # define yyltype YYLTYPE /* obsolescent; will be withdrawn */
1743 # define YYLTYPE_IS_DECLARED 1
1744 # define YYLTYPE_IS_TRIVIAL 1
1745 #endif
1746
1747 ]b4_pure_if([], [[extern YYLTYPE ]b4_prefix[lloc;]])
1748 )dnl b4_locations_if
1749 b4_push_if([[
1750 #ifndef YYPUSH_DECLS
1751 # define YYPUSH_DECLS
1752 struct ]b4_prefix[pstate;
1753 typedef struct ]b4_prefix[pstate ]b4_prefix[pstate;
1754 enum { YYPUSH_MORE = 4 };
1755 ]b4_pull_if([b4_c_function_decl([b4_prefix[parse]], [[int]], b4_parse_param)
1756 ])b4_c_function_decl([b4_prefix[push_parse]], [[int]],
1757 [[b4_prefix[pstate *yyps]], [[yyps]]]b4_pure_if([,
1758 [[[int yypushed_char]], [[yypushed_char]]],
1759 [[[YYSTYPE const *yypushed_val]], [[yypushed_val]]]b4_locations_if([,
1760 [[[YYLTYPE const *yypushed_loc]], [[yypushed_loc]]]])])m4_ifset([b4_parse_param], [,
1761 b4_parse_param]))
1762 b4_pull_if([b4_c_function_decl([b4_prefix[pull_parse]], [[int]],
1763 [[b4_prefix[pstate *yyps]], [[yyps]]]m4_ifset([b4_parse_param], [,
1764 b4_parse_param]))])
1765 b4_c_function_decl([b4_prefix[pstate_new]], [b4_prefix[pstate *]],
1766 [[[void]], []])
1767 b4_c_function_decl([b4_prefix[pstate_delete]], [[void]],
1768 [[b4_prefix[pstate *yyps]], [[yyps]]])[
1769 #endif
1770 ]])
1771 b4_percent_code_get([[provides]])[]dnl
1772 ])dnl b4_defines_if
1773 m4_divert_pop(0)
bison