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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,
6 # 2006, 2007, 2008, 2009, 2010 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[3];]])[
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, 2006, 2007, 2008, 2009, 2010])[
221
222 /* C LALR(1) parser skeleton written by Richard Stallman, by
223 simplifying the original so-called "semantic" parser. */
224
225 /* All symbols defined below should begin with yy or YY, to avoid
226 infringing on user name space. This should be done even for local
227 variables, as they might otherwise be expanded by user macros.
228 There are some unavoidable exceptions within include files to
229 define necessary library symbols; they are noted "INFRINGES ON
230 USER NAME SPACE" below. */
231
232 ]b4_identification
233 b4_percent_code_get([[top]])[]dnl
234 m4_if(b4_prefix, [yy], [],
235 [[/* Substitute the variable and function names. */]b4_pull_if([[
236 #define yyparse ]b4_prefix[parse]])b4_push_if([[
237 #define yypush_parse ]b4_prefix[push_parse]b4_pull_if([[
238 #define yypull_parse ]b4_prefix[pull_parse]])[
239 #define yypstate_new ]b4_prefix[pstate_new
240 #define yypstate_delete ]b4_prefix[pstate_delete
241 #define yypstate ]b4_prefix[pstate]])[
242 #define yylex ]b4_prefix[lex
243 #define yyerror ]b4_prefix[error
244 #define yylval ]b4_prefix[lval
245 #define yychar ]b4_prefix[char
246 #define yydebug ]b4_prefix[debug
247 #define yynerrs ]b4_prefix[nerrs
248 ]b4_locations_if([[#define yylloc ]b4_prefix[lloc]])])[
249
250 /* Copy the first part of user declarations. */
251 ]b4_user_pre_prologue[
252
253 /* Enabling traces. */
254 #ifndef YYDEBUG
255 # define YYDEBUG ]b4_debug_flag[
256 #endif
257
258 /* Enabling verbose error messages. */
259 #ifdef YYERROR_VERBOSE
260 # undef YYERROR_VERBOSE
261 # define YYERROR_VERBOSE 1
262 #else
263 # define YYERROR_VERBOSE ]b4_error_verbose_flag[
264 #endif
265
266 /* Enabling the token table. */
267 #ifndef YYTOKEN_TABLE
268 # define YYTOKEN_TABLE ]b4_token_table[
269 #endif
270
271 ]b4_percent_code_get([[requires]])[]dnl
272
273 b4_token_enums_defines(b4_tokens)[
274
275 #if ! defined YYSTYPE && ! defined YYSTYPE_IS_DECLARED
276 ]m4_ifdef([b4_stype],
277 [[typedef union ]b4_union_name[
278 {
279 ]b4_user_stype[
280 } YYSTYPE;
281 # define YYSTYPE_IS_TRIVIAL 1]],
282 [m4_if(b4_tag_seen_flag, 0,
283 [[typedef int YYSTYPE;
284 # define YYSTYPE_IS_TRIVIAL 1]])])[
285 # define yystype YYSTYPE /* obsolescent; will be withdrawn */
286 # define YYSTYPE_IS_DECLARED 1
287 #endif]b4_locations_if([[
288
289 #if ! defined YYLTYPE && ! defined YYLTYPE_IS_DECLARED
290 typedef struct YYLTYPE
291 {
292 int first_line;
293 int first_column;
294 int last_line;
295 int last_column;
296 } YYLTYPE;
297 # define yyltype YYLTYPE /* obsolescent; will be withdrawn */
298 # define YYLTYPE_IS_DECLARED 1
299 # define YYLTYPE_IS_TRIVIAL 1
300 #endif]])b4_push_if([[
301
302 #ifndef YYPUSH_DECLS
303 # define YYPUSH_DECLS
304 struct yypstate;
305 typedef struct yypstate yypstate;
306 enum { YYPUSH_MORE = 4 };
307
308 ]b4_pull_if([b4_c_function_decl([[yyparse]], [[int]], b4_parse_param)
309 ])b4_c_function_decl([[yypush_parse]], [[int]],
310 [[[yypstate *yyps]], [[yyps]]]b4_pure_if([,
311 [[[int yypushed_char]], [[yypushed_char]]],
312 [[[YYSTYPE const *yypushed_val]], [[yypushed_val]]]b4_locations_if([,
313 [[[YYLTYPE const *yypushed_loc]], [[yypushed_loc]]]])])m4_ifset([b4_parse_param], [,
314 b4_parse_param]))
315 b4_pull_if([b4_c_function_decl([[yypull_parse]], [[int]],
316 [[[yypstate *yyps]], [[yyps]]]m4_ifset([b4_parse_param], [,
317 b4_parse_param]))])
318 b4_c_function_decl([[yypstate_new]], [[yypstate *]], [[[void]], []])
319 b4_c_function_decl([[yypstate_delete]], [[void]],
320 [[[yypstate *yyps]], [[yyps]]])[
321 #endif]])
322
323 b4_percent_code_get([[provides]])[]dnl
324
325 [/* Copy the second part of user declarations. */
326 ]b4_user_post_prologue
327 b4_percent_code_get[]dnl
328
329 [#ifdef short
330 # undef short
331 #endif
332
333 #ifdef YYTYPE_UINT8
334 typedef YYTYPE_UINT8 yytype_uint8;
335 #else
336 typedef unsigned char yytype_uint8;
337 #endif
338
339 #ifdef YYTYPE_INT8
340 typedef YYTYPE_INT8 yytype_int8;
341 #elif ]b4_c_modern[
342 typedef signed char yytype_int8;
343 #else
344 typedef short int yytype_int8;
345 #endif
346
347 #ifdef YYTYPE_UINT16
348 typedef YYTYPE_UINT16 yytype_uint16;
349 #else
350 typedef unsigned short int yytype_uint16;
351 #endif
352
353 #ifdef YYTYPE_INT16
354 typedef YYTYPE_INT16 yytype_int16;
355 #else
356 typedef short int yytype_int16;
357 #endif
358
359 #ifndef YYSIZE_T
360 # ifdef __SIZE_TYPE__
361 # define YYSIZE_T __SIZE_TYPE__
362 # elif defined size_t
363 # define YYSIZE_T size_t
364 # elif ! defined YYSIZE_T && ]b4_c_modern[
365 # include <stddef.h> /* INFRINGES ON USER NAME SPACE */
366 # define YYSIZE_T size_t
367 # else
368 # define YYSIZE_T unsigned int
369 # endif
370 #endif
371
372 #define YYSIZE_MAXIMUM ((YYSIZE_T) -1)
373
374 #ifndef YY_
375 # if defined YYENABLE_NLS && YYENABLE_NLS
376 # if ENABLE_NLS
377 # include <libintl.h> /* INFRINGES ON USER NAME SPACE */
378 # define YY_(msgid) dgettext ("bison-runtime", msgid)
379 # endif
380 # endif
381 # ifndef YY_
382 # define YY_(msgid) msgid
383 # endif
384 #endif
385
386 /* Suppress unused-variable warnings by "using" E. */
387 #if ! defined lint || defined __GNUC__
388 # define YYUSE(e) ((void) (e))
389 #else
390 # define YYUSE(e) /* empty */
391 #endif
392
393 /* Identity function, used to suppress warnings about constant conditions. */
394 #ifndef lint
395 # define YYID(n) (n)
396 #else
397 ]b4_c_function_def([YYID], [static int], [[int yyi], [yyi]])[
398 {
399 return yyi;
400 }
401 #endif
402
403 #if ! defined yyoverflow || YYERROR_VERBOSE
404
405 ]b4_push_if([],
406 [[/* The parser invokes alloca or malloc; define the necessary symbols. */
407
408 # ifdef YYSTACK_USE_ALLOCA
409 # if YYSTACK_USE_ALLOCA
410 # ifdef __GNUC__
411 # define YYSTACK_ALLOC __builtin_alloca
412 # elif defined __BUILTIN_VA_ARG_INCR
413 # include <alloca.h> /* INFRINGES ON USER NAME SPACE */
414 # elif defined _AIX
415 # define YYSTACK_ALLOC __alloca
416 # elif defined _MSC_VER
417 # include <malloc.h> /* INFRINGES ON USER NAME SPACE */
418 # define alloca _alloca
419 # else
420 # define YYSTACK_ALLOC alloca
421 # if ! defined _ALLOCA_H && ! defined EXIT_SUCCESS && ]b4_c_modern[
422 # include <stdlib.h> /* INFRINGES ON USER NAME SPACE */
423 # ifndef EXIT_SUCCESS
424 # define EXIT_SUCCESS 0
425 # endif
426 # endif
427 # endif
428 # endif
429 # endif
430
431 ]])dnl
432 [# ifdef YYSTACK_ALLOC
433 /* Pacify GCC's `empty if-body' warning. */
434 # define YYSTACK_FREE(Ptr) do { /* empty */; } while (YYID (0))
435 # ifndef YYSTACK_ALLOC_MAXIMUM
436 /* The OS might guarantee only one guard page at the bottom of the stack,
437 and a page size can be as small as 4096 bytes. So we cannot safely
438 invoke alloca (N) if N exceeds 4096. Use a slightly smaller number
439 to allow for a few compiler-allocated temporary stack slots. */
440 # define YYSTACK_ALLOC_MAXIMUM 4032 /* reasonable circa 2006 */
441 # endif
442 # else
443 # define YYSTACK_ALLOC YYMALLOC
444 # define YYSTACK_FREE YYFREE
445 # ifndef YYSTACK_ALLOC_MAXIMUM
446 # define YYSTACK_ALLOC_MAXIMUM YYSIZE_MAXIMUM
447 # endif
448 # if (defined __cplusplus && ! defined EXIT_SUCCESS \
449 && ! ((defined YYMALLOC || defined malloc) \
450 && (defined YYFREE || defined free)))
451 # include <stdlib.h> /* INFRINGES ON USER NAME SPACE */
452 # ifndef EXIT_SUCCESS
453 # define EXIT_SUCCESS 0
454 # endif
455 # endif
456 # ifndef YYMALLOC
457 # define YYMALLOC malloc
458 # if ! defined malloc && ! defined EXIT_SUCCESS && ]b4_c_modern[
459 void *malloc (YYSIZE_T); /* INFRINGES ON USER NAME SPACE */
460 # endif
461 # endif
462 # ifndef YYFREE
463 # define YYFREE free
464 # if ! defined free && ! defined EXIT_SUCCESS && ]b4_c_modern[
465 void free (void *); /* INFRINGES ON USER NAME SPACE */
466 # endif
467 # endif
468 # endif
469 #endif /* ! defined yyoverflow || YYERROR_VERBOSE */
470
471
472 #if (! defined yyoverflow \
473 && (! defined __cplusplus \
474 || (]b4_locations_if([[defined YYLTYPE_IS_TRIVIAL && YYLTYPE_IS_TRIVIAL \
475 && ]])[defined YYSTYPE_IS_TRIVIAL && YYSTYPE_IS_TRIVIAL)))
476
477 /* A type that is properly aligned for any stack member. */
478 union yyalloc
479 {
480 yytype_int16 yyss_alloc;
481 YYSTYPE yyvs_alloc;]b4_locations_if([
482 YYLTYPE yyls_alloc;])[
483 };
484
485 /* The size of the maximum gap between one aligned stack and the next. */
486 # define YYSTACK_GAP_MAXIMUM (sizeof (union yyalloc) - 1)
487
488 /* The size of an array large to enough to hold all stacks, each with
489 N elements. */
490 ]b4_locations_if(
491 [# define YYSTACK_BYTES(N) \
492 ((N) * (sizeof (yytype_int16) + sizeof (YYSTYPE) + sizeof (YYLTYPE)) \
493 + 2 * YYSTACK_GAP_MAXIMUM)],
494 [# define YYSTACK_BYTES(N) \
495 ((N) * (sizeof (yytype_int16) + sizeof (YYSTYPE)) \
496 + YYSTACK_GAP_MAXIMUM)])[
497
498 /* Copy COUNT objects from FROM to TO. The source and destination do
499 not overlap. */
500 # ifndef YYCOPY
501 # if defined __GNUC__ && 1 < __GNUC__
502 # define YYCOPY(To, From, Count) \
503 __builtin_memcpy (To, From, (Count) * sizeof (*(From)))
504 # else
505 # define YYCOPY(To, From, Count) \
506 do \
507 { \
508 YYSIZE_T yyi; \
509 for (yyi = 0; yyi < (Count); yyi++) \
510 (To)[yyi] = (From)[yyi]; \
511 } \
512 while (YYID (0))
513 # endif
514 # endif
515
516 /* Relocate STACK from its old location to the new one. The
517 local variables YYSIZE and YYSTACKSIZE give the old and new number of
518 elements in the stack, and YYPTR gives the new location of the
519 stack. Advance YYPTR to a properly aligned location for the next
520 stack. */
521 # define YYSTACK_RELOCATE(Stack_alloc, Stack) \
522 do \
523 { \
524 YYSIZE_T yynewbytes; \
525 YYCOPY (&yyptr->Stack_alloc, Stack, yysize); \
526 Stack = &yyptr->Stack_alloc; \
527 yynewbytes = yystacksize * sizeof (*Stack) + YYSTACK_GAP_MAXIMUM; \
528 yyptr += yynewbytes / sizeof (*yyptr); \
529 } \
530 while (YYID (0))
531
532 #endif
533
534 /* YYFINAL -- State number of the termination state. */
535 #define YYFINAL ]b4_final_state_number[
536 /* YYLAST -- Last index in YYTABLE. */
537 #define YYLAST ]b4_last[
538
539 /* YYNTOKENS -- Number of terminals. */
540 #define YYNTOKENS ]b4_tokens_number[
541 /* YYNNTS -- Number of nonterminals. */
542 #define YYNNTS ]b4_nterms_number[
543 /* YYNRULES -- Number of rules. */
544 #define YYNRULES ]b4_rules_number[
545 /* YYNRULES -- Number of states. */
546 #define YYNSTATES ]b4_states_number[
547
548 /* YYTRANSLATE(YYLEX) -- Bison symbol number corresponding to YYLEX. */
549 #define YYUNDEFTOK ]b4_undef_token_number[
550 #define YYMAXUTOK ]b4_user_token_number_max[
551
552 #define YYTRANSLATE(YYX) \
553 ((unsigned int) (YYX) <= YYMAXUTOK ? yytranslate[YYX] : YYUNDEFTOK)
554
555 /* YYTRANSLATE[YYLEX] -- Bison symbol number corresponding to YYLEX. */
556 static const ]b4_int_type_for([b4_translate])[ yytranslate[] =
557 {
558 ]b4_translate[
559 };
560
561 #if YYDEBUG
562 /* YYPRHS[YYN] -- Index of the first RHS symbol of rule number YYN in
563 YYRHS. */
564 static const ]b4_int_type_for([b4_prhs])[ yyprhs[] =
565 {
566 ]b4_prhs[
567 };
568
569 /* YYRHS -- A `-1'-separated list of the rules' RHS. */
570 static const ]b4_int_type_for([b4_rhs])[ yyrhs[] =
571 {
572 ]b4_rhs[
573 };
574
575 /* YYRLINE[YYN] -- source line where rule number YYN was defined. */
576 static const ]b4_int_type_for([b4_rline])[ yyrline[] =
577 {
578 ]b4_rline[
579 };
580 #endif
581
582 #if YYDEBUG || YYERROR_VERBOSE || YYTOKEN_TABLE
583 /* YYTNAME[SYMBOL-NUM] -- String name of the symbol SYMBOL-NUM.
584 First, the terminals, then, starting at YYNTOKENS, nonterminals. */
585 static const char *const yytname[] =
586 {
587 ]b4_tname[
588 };
589 #endif
590
591 # ifdef YYPRINT
592 /* YYTOKNUM[YYLEX-NUM] -- Internal token number corresponding to
593 token YYLEX-NUM. */
594 static const ]b4_int_type_for([b4_toknum])[ yytoknum[] =
595 {
596 ]b4_toknum[
597 };
598 # endif
599
600 /* YYR1[YYN] -- Symbol number of symbol that rule YYN derives. */
601 static const ]b4_int_type_for([b4_r1])[ yyr1[] =
602 {
603 ]b4_r1[
604 };
605
606 /* YYR2[YYN] -- Number of symbols composing right hand side of rule YYN. */
607 static const ]b4_int_type_for([b4_r2])[ yyr2[] =
608 {
609 ]b4_r2[
610 };
611
612 /* YYDEFACT[STATE-NAME] -- Default reduction number in state STATE-NUM.
613 Performed when YYTABLE doesn't specify something else to do. Zero
614 means the default is an error. */
615 static const ]b4_int_type_for([b4_defact])[ yydefact[] =
616 {
617 ]b4_defact[
618 };
619
620 /* YYDEFGOTO[NTERM-NUM]. */
621 static const ]b4_int_type_for([b4_defgoto])[ yydefgoto[] =
622 {
623 ]b4_defgoto[
624 };
625
626 /* YYPACT[STATE-NUM] -- Index in YYTABLE of the portion describing
627 STATE-NUM. */
628 #define YYPACT_NINF ]b4_pact_ninf[
629 static const ]b4_int_type_for([b4_pact])[ yypact[] =
630 {
631 ]b4_pact[
632 };
633
634 /* YYPGOTO[NTERM-NUM]. */
635 static const ]b4_int_type_for([b4_pgoto])[ yypgoto[] =
636 {
637 ]b4_pgoto[
638 };
639
640 /* YYTABLE[YYPACT[STATE-NUM]]. What to do in state STATE-NUM. If
641 positive, shift that token. If negative, reduce the rule which
642 number is the opposite. If YYTABLE_NINF, syntax error. */
643 #define YYTABLE_NINF ]b4_table_ninf[
644 static const ]b4_int_type_for([b4_table])[ yytable[] =
645 {
646 ]b4_table[
647 };
648
649 #define yypact_value_is_default(yystate) \
650 ]b4_table_value_equals([[pact]], [[yystate]], [b4_pact_ninf])[
651
652 #define yytable_value_is_error(yytable_value) \
653 ]b4_table_value_equals([[table]], [[yytable_value]], [b4_table_ninf])[
654
655 static const ]b4_int_type_for([b4_check])[ yycheck[] =
656 {
657 ]b4_check[
658 };
659
660 /* YYSTOS[STATE-NUM] -- The (internal number of the) accessing
661 symbol of state STATE-NUM. */
662 static const ]b4_int_type_for([b4_stos])[ yystos[] =
663 {
664 ]b4_stos[
665 };
666
667 #define yyerrok (yyerrstatus = 0)
668 #define yyclearin (yychar = YYEMPTY)
669 #define YYEMPTY (-2)
670 #define YYEOF 0
671
672 #define YYACCEPT goto yyacceptlab
673 #define YYABORT goto yyabortlab
674 #define YYERROR goto yyerrorlab
675
676
677 /* Like YYERROR except do call yyerror. This remains here temporarily
678 to ease the transition to the new meaning of YYERROR, for GCC.
679 Once GCC version 2 has supplanted version 1, this can go. However,
680 YYFAIL appears to be in use. Nevertheless, it is formally deprecated
681 in Bison 2.4.2's NEWS entry, where a plan to phase it out is
682 discussed. */
683
684 #define YYFAIL goto yyerrlab
685 #if defined YYFAIL
686 /* This is here to suppress warnings from the GCC cpp's
687 -Wunused-macros. Normally we don't worry about that warning, but
688 some users do, and we want to make it easy for users to remove
689 YYFAIL uses, which will produce warnings from Bison 2.5. */
690 #endif
691
692 #define YYRECOVERING() (!!yyerrstatus)
693
694 #define YYBACKUP(Token, Value) \
695 do \
696 if (yychar == YYEMPTY && yylen == 1) \
697 { \
698 yychar = (Token); \
699 yylval = (Value); \
700 YYPOPSTACK (1); \
701 goto yybackup; \
702 } \
703 else \
704 { \
705 yyerror (]b4_yyerror_args[YY_("syntax error: cannot back up")); \
706 YYERROR; \
707 } \
708 while (YYID (0))
709
710
711 #define YYTERROR 1
712 #define YYERRCODE 256
713
714
715 /* YYLLOC_DEFAULT -- Set CURRENT to span from RHS[1] to RHS[N].
716 If N is 0, then set CURRENT to the empty location which ends
717 the previous symbol: RHS[0] (always defined). */
718
719 #define YYRHSLOC(Rhs, K) ((Rhs)[K])
720 #ifndef YYLLOC_DEFAULT
721 # define YYLLOC_DEFAULT(Current, Rhs, N) \
722 do \
723 if (YYID (N)) \
724 { \
725 (Current).first_line = YYRHSLOC (Rhs, 1).first_line; \
726 (Current).first_column = YYRHSLOC (Rhs, 1).first_column; \
727 (Current).last_line = YYRHSLOC (Rhs, N).last_line; \
728 (Current).last_column = YYRHSLOC (Rhs, N).last_column; \
729 } \
730 else \
731 { \
732 (Current).first_line = (Current).last_line = \
733 YYRHSLOC (Rhs, 0).last_line; \
734 (Current).first_column = (Current).last_column = \
735 YYRHSLOC (Rhs, 0).last_column; \
736 } \
737 while (YYID (0))
738 #endif]b4_locations_if([[
739
740
741 /* YY_LOCATION_PRINT -- Print the location on the stream.
742 This macro was not mandated originally: define only if we know
743 we won't break user code: when these are the locations we know. */
744
745 #ifndef YY_LOCATION_PRINT
746 # if defined YYLTYPE_IS_TRIVIAL && YYLTYPE_IS_TRIVIAL
747 # define YY_LOCATION_PRINT(File, Loc) \
748 fprintf (File, "%d.%d-%d.%d", \
749 (Loc).first_line, (Loc).first_column, \
750 (Loc).last_line, (Loc).last_column)
751 # else
752 # define YY_LOCATION_PRINT(File, Loc) ((void) 0)
753 # endif
754 #endif]], [[
755
756
757 /* This macro is provided for backward compatibility. */
758
759 #ifndef YY_LOCATION_PRINT
760 # define YY_LOCATION_PRINT(File, Loc) ((void) 0)
761 #endif]])[
762
763
764 /* YYLEX -- calling `yylex' with the right arguments. */
765
766 #ifdef YYLEX_PARAM
767 # define YYLEX yylex (]b4_pure_if([&yylval[]b4_locations_if([, &yylloc]), ])[YYLEX_PARAM)
768 #else
769 # define YYLEX ]b4_c_function_call([yylex], [int], b4_lex_param)[
770 #endif
771
772 /* Enable debugging if requested. */
773 #if YYDEBUG
774
775 # ifndef YYFPRINTF
776 # include <stdio.h> /* INFRINGES ON USER NAME SPACE */
777 # define YYFPRINTF fprintf
778 # endif
779
780 # define YYDPRINTF(Args) \
781 do { \
782 if (yydebug) \
783 YYFPRINTF Args; \
784 } while (YYID (0))
785
786 # define YY_SYMBOL_PRINT(Title, Type, Value, Location) \
787 do { \
788 if (yydebug) \
789 { \
790 YYFPRINTF (stderr, "%s ", Title); \
791 yy_symbol_print (stderr, \
792 Type, Value]b4_locations_if([, Location])[]b4_user_args[); \
793 YYFPRINTF (stderr, "\n"); \
794 } \
795 } while (YYID (0))
796
797 ]b4_yy_symbol_print_generate([b4_c_function_def])[
798
799 /*------------------------------------------------------------------.
800 | yy_stack_print -- Print the state stack from its BOTTOM up to its |
801 | TOP (included). |
802 `------------------------------------------------------------------*/
803
804 ]b4_c_function_def([yy_stack_print], [static void],
805 [[yytype_int16 *yybottom], [yybottom]],
806 [[yytype_int16 *yytop], [yytop]])[
807 {
808 YYFPRINTF (stderr, "Stack now");
809 for (; yybottom <= yytop; yybottom++)
810 {
811 int yybot = *yybottom;
812 YYFPRINTF (stderr, " %d", yybot);
813 }
814 YYFPRINTF (stderr, "\n");
815 }
816
817 # define YY_STACK_PRINT(Bottom, Top) \
818 do { \
819 if (yydebug) \
820 yy_stack_print ((Bottom), (Top)); \
821 } while (YYID (0))
822
823
824 /*------------------------------------------------.
825 | Report that the YYRULE is going to be reduced. |
826 `------------------------------------------------*/
827
828 ]b4_c_function_def([yy_reduce_print], [static void],
829 [[YYSTYPE *yyvsp], [yyvsp]],
830 b4_locations_if([[[YYLTYPE *yylsp], [yylsp]],
831 ])[[int yyrule], [yyrule]]m4_ifset([b4_parse_param], [,
832 b4_parse_param]))[
833 {
834 int yynrhs = yyr2[yyrule];
835 int yyi;
836 unsigned long int yylno = yyrline[yyrule];
837 YYFPRINTF (stderr, "Reducing stack by rule %d (line %lu):\n",
838 yyrule - 1, yylno);
839 /* The symbols being reduced. */
840 for (yyi = 0; yyi < yynrhs; yyi++)
841 {
842 YYFPRINTF (stderr, " $%d = ", yyi + 1);
843 yy_symbol_print (stderr, yyrhs[yyprhs[yyrule] + yyi],
844 &]b4_rhs_value(yynrhs, yyi + 1)[
845 ]b4_locations_if([, &]b4_rhs_location(yynrhs, yyi + 1))[]dnl
846 b4_user_args[);
847 YYFPRINTF (stderr, "\n");
848 }
849 }
850
851 # define YY_REDUCE_PRINT(Rule) \
852 do { \
853 if (yydebug) \
854 yy_reduce_print (yyvsp, ]b4_locations_if([yylsp, ])[Rule]b4_user_args[); \
855 } while (YYID (0))
856
857 /* Nonzero means print parse trace. It is left uninitialized so that
858 multiple parsers can coexist. */
859 int yydebug;
860 #else /* !YYDEBUG */
861 # define YYDPRINTF(Args)
862 # define YY_SYMBOL_PRINT(Title, Type, Value, Location)
863 # define YY_STACK_PRINT(Bottom, Top)
864 # define YY_REDUCE_PRINT(Rule)
865 #endif /* !YYDEBUG */
866
867
868 /* YYINITDEPTH -- initial size of the parser's stacks. */
869 #ifndef YYINITDEPTH
870 # define YYINITDEPTH ]b4_stack_depth_init[
871 #endif
872
873 /* YYMAXDEPTH -- maximum size the stacks can grow to (effective only
874 if the built-in stack extension method is used).
875
876 Do not make this value too large; the results are undefined if
877 YYSTACK_ALLOC_MAXIMUM < YYSTACK_BYTES (YYMAXDEPTH)
878 evaluated with infinite-precision integer arithmetic. */
879
880 #ifndef YYMAXDEPTH
881 # define YYMAXDEPTH ]b4_stack_depth_max[
882 #endif
883
884 \f
885
886 #if YYERROR_VERBOSE
887
888 # ifndef yystrlen
889 # if defined __GLIBC__ && defined _STRING_H
890 # define yystrlen strlen
891 # else
892 /* Return the length of YYSTR. */
893 ]b4_c_function_def([yystrlen], [static YYSIZE_T],
894 [[const char *yystr], [yystr]])[
895 {
896 YYSIZE_T yylen;
897 for (yylen = 0; yystr[yylen]; yylen++)
898 continue;
899 return yylen;
900 }
901 # endif
902 # endif
903
904 # ifndef yystpcpy
905 # if defined __GLIBC__ && defined _STRING_H && defined _GNU_SOURCE
906 # define yystpcpy stpcpy
907 # else
908 /* Copy YYSRC to YYDEST, returning the address of the terminating '\0' in
909 YYDEST. */
910 ]b4_c_function_def([yystpcpy], [static char *],
911 [[char *yydest], [yydest]], [[const char *yysrc], [yysrc]])[
912 {
913 char *yyd = yydest;
914 const char *yys = yysrc;
915
916 while ((*yyd++ = *yys++) != '\0')
917 continue;
918
919 return yyd - 1;
920 }
921 # endif
922 # endif
923
924 # ifndef yytnamerr
925 /* Copy to YYRES the contents of YYSTR after stripping away unnecessary
926 quotes and backslashes, so that it's suitable for yyerror. The
927 heuristic is that double-quoting is unnecessary unless the string
928 contains an apostrophe, a comma, or backslash (other than
929 backslash-backslash). YYSTR is taken from yytname. If YYRES is
930 null, do not copy; instead, return the length of what the result
931 would have been. */
932 static YYSIZE_T
933 yytnamerr (char *yyres, const char *yystr)
934 {
935 if (*yystr == '"')
936 {
937 YYSIZE_T yyn = 0;
938 char const *yyp = yystr;
939
940 for (;;)
941 switch (*++yyp)
942 {
943 case '\'':
944 case ',':
945 goto do_not_strip_quotes;
946
947 case '\\':
948 if (*++yyp != '\\')
949 goto do_not_strip_quotes;
950 /* Fall through. */
951 default:
952 if (yyres)
953 yyres[yyn] = *yyp;
954 yyn++;
955 break;
956
957 case '"':
958 if (yyres)
959 yyres[yyn] = '\0';
960 return yyn;
961 }
962 do_not_strip_quotes: ;
963 }
964
965 if (! yyres)
966 return yystrlen (yystr);
967
968 return yystpcpy (yyres, yystr) - yyres;
969 }
970 # endif
971
972 /* Copy into *YYMSG, which is of size *YYMSG_ALLOC, an error message
973 about the unexpected token YYTOKEN while in state YYSTATE.
974
975 Return 0 if *YYMSG was successfully written. Return 1 if *YYMSG is
976 not large enough to hold the message. In that case, also set
977 *YYMSG_ALLOC to the required number of bytes. Return 2 if the
978 required number of bytes is too large to store. */
979 static int
980 yysyntax_error (YYSIZE_T *yymsg_alloc, char **yymsg,
981 int yystate, int yytoken)
982 {
983 YYSIZE_T yysize0 = yytnamerr (0, yytname[yytoken]);
984 YYSIZE_T yysize = yysize0;
985 YYSIZE_T yysize1;
986 enum { YYERROR_VERBOSE_ARGS_MAXIMUM = 5 };
987 /* Internationalized format string. */
988 const char *yyformat = 0;
989 /* Arguments of yyformat. */
990 char const *yyarg[YYERROR_VERBOSE_ARGS_MAXIMUM];
991 /* Number of reported tokens (one for the "unexpected", one per
992 "expected"). */
993 int yycount = 0;
994
995 /* There are many possibilities here to consider:
996 - Assume YYFAIL is not used. It's too flawed to consider. See
997 <http://lists.gnu.org/archive/html/bison-patches/2009-12/msg00024.html>
998 for details. YYERROR is fine as it does not invoke this
999 function.
1000 - If this state is a consistent state with a default action, then
1001 the only way this function was invoked is if the default action
1002 is an error action. In that case, don't check for expected
1003 tokens because there are none.
1004 - The only way there can be no lookahead present (in yychar) is if
1005 this state is a consistent state with a default action. Thus,
1006 detecting the absence of a lookahead is sufficient to determine
1007 that there is no unexpected or expected token to report. In that
1008 case, just report a simple "syntax error".
1009 - Don't assume there isn't a lookahead just because this state is a
1010 consistent state with a default action. There might have been a
1011 previous inconsistent state, consistent state with a non-default
1012 action, or user semantic action that manipulated yychar.
1013 - Of course, the expected token list depends on states to have
1014 correct lookahead information, and it depends on the parser not
1015 to perform extra reductions after fetching a lookahead from the
1016 scanner and before detecting a syntax error. Thus, state merging
1017 (from LALR or IELR) and default reductions corrupt the expected
1018 token list. However, the list is correct for canonical LR with
1019 one exception: it will still contain any token that will not be
1020 accepted due to an error action in a later state.
1021 */
1022 if (yytoken != YYEMPTY)
1023 {
1024 int yyn = yypact[yystate];
1025 yyarg[yycount++] = yytname[yytoken];
1026 if (!yypact_value_is_default (yyn))
1027 {
1028 /* Start YYX at -YYN if negative to avoid negative indexes in
1029 YYCHECK. In other words, skip the first -YYN actions for
1030 this state because they are default actions. */
1031 int yyxbegin = yyn < 0 ? -yyn : 0;
1032 /* Stay within bounds of both yycheck and yytname. */
1033 int yychecklim = YYLAST - yyn + 1;
1034 int yyxend = yychecklim < YYNTOKENS ? yychecklim : YYNTOKENS;
1035 int yyx;
1036 for (yyx = yyxbegin; yyx < yyxend; ++yyx)
1037 if (yycheck[yyx + yyn] == yyx && yyx != YYTERROR
1038 && !yytable_value_is_error (yytable[yyx + yyn]))
1039 {
1040 if (yycount == YYERROR_VERBOSE_ARGS_MAXIMUM)
1041 {
1042 yycount = 1;
1043 yysize = yysize0;
1044 break;
1045 }
1046 yyarg[yycount++] = yytname[yyx];
1047 yysize1 = yysize + yytnamerr (0, yytname[yyx]);
1048 if (! (yysize <= yysize1
1049 && yysize1 <= YYSTACK_ALLOC_MAXIMUM))
1050 return 2;
1051 yysize = yysize1;
1052 }
1053 }
1054 }
1055
1056 switch (yycount)
1057 {
1058 #define YYCASE_(N, S) \
1059 case N: \
1060 yyformat = S; \
1061 break
1062 YYCASE_(0, YY_("syntax error"));
1063 YYCASE_(1, YY_("syntax error, unexpected %s"));
1064 YYCASE_(2, YY_("syntax error, unexpected %s, expecting %s"));
1065 YYCASE_(3, YY_("syntax error, unexpected %s, expecting %s or %s"));
1066 YYCASE_(4, YY_("syntax error, unexpected %s, expecting %s or %s or %s"));
1067 YYCASE_(5, YY_("syntax error, unexpected %s, expecting %s or %s or %s or %s"));
1068 #undef YYCASE_
1069 }
1070
1071 yysize1 = yysize + yystrlen (yyformat);
1072 if (! (yysize <= yysize1 && yysize1 <= YYSTACK_ALLOC_MAXIMUM))
1073 return 2;
1074 yysize = yysize1;
1075
1076 if (*yymsg_alloc < yysize)
1077 {
1078 *yymsg_alloc = 2 * yysize;
1079 if (! (yysize <= *yymsg_alloc
1080 && *yymsg_alloc <= YYSTACK_ALLOC_MAXIMUM))
1081 *yymsg_alloc = YYSTACK_ALLOC_MAXIMUM;
1082 return 1;
1083 }
1084
1085 /* Avoid sprintf, as that infringes on the user's name space.
1086 Don't have undefined behavior even if the translation
1087 produced a string with the wrong number of "%s"s. */
1088 {
1089 char *yyp = *yymsg;
1090 int yyi = 0;
1091 while ((*yyp = *yyformat) != '\0')
1092 if (*yyp == '%' && yyformat[1] == 's' && yyi < yycount)
1093 {
1094 yyp += yytnamerr (yyp, yyarg[yyi++]);
1095 yyformat += 2;
1096 }
1097 else
1098 {
1099 yyp++;
1100 yyformat++;
1101 }
1102 }
1103 return 0;
1104 }
1105 #endif /* YYERROR_VERBOSE */
1106 \f
1107
1108 ]b4_yydestruct_generate([b4_c_function_def])b4_push_if([], [[
1109
1110
1111 /* Prevent warnings from -Wmissing-prototypes. */
1112 #ifdef YYPARSE_PARAM
1113 ]b4_c_function_decl([yyparse], [int],
1114 [[void *YYPARSE_PARAM], [YYPARSE_PARAM]])[
1115 #else /* ! YYPARSE_PARAM */
1116 ]b4_c_function_decl([yyparse], [int], b4_parse_param)[
1117 #endif /* ! YYPARSE_PARAM */]])b4_pure_if([], [
1118
1119 b4_declare_scanner_communication_variables])[]b4_push_if([[
1120
1121
1122 struct yypstate
1123 {]b4_declare_parser_state_variables[
1124 /* Used to determine if this is the first time this instance has
1125 been used. */
1126 int yynew;
1127 };]b4_pure_if([], [[
1128
1129 static char yypstate_allocated = 0;]])b4_pull_if([
1130
1131 b4_c_function_def([[yyparse]], [[int]], b4_parse_param)[
1132 {
1133 return yypull_parse (0]m4_ifset([b4_parse_param],
1134 [[, ]b4_c_args(b4_parse_param)])[);
1135 }
1136
1137 ]b4_c_function_def([[yypull_parse]], [[int]],
1138 [[[yypstate *yyps]], [[yyps]]]m4_ifset([b4_parse_param], [,
1139 b4_parse_param]))[
1140 {
1141 int yystatus;
1142 yypstate *yyps_local;]b4_pure_if([[
1143 int yychar;
1144 YYSTYPE yylval;]b4_locations_if([[
1145 YYLTYPE yylloc;]])])[
1146 if (yyps == 0)
1147 {
1148 yyps_local = yypstate_new ();
1149 if (!yyps_local)
1150 {]b4_pure_if([[
1151 yyerror (]b4_yyerror_args[YY_("memory exhausted"));]], [[
1152 if (!yypstate_allocated)
1153 yyerror (]b4_yyerror_args[YY_("memory exhausted"));]])[
1154 return 2;
1155 }
1156 }
1157 else
1158 yyps_local = yyps;
1159 do {
1160 yychar = YYLEX;
1161 yystatus =
1162 yypush_parse (yyps_local]b4_pure_if([[, yychar, &yylval]b4_locations_if([[, &yylloc]])])m4_ifset([b4_parse_param], [, b4_c_args(b4_parse_param)])[);
1163 } while (yystatus == YYPUSH_MORE);
1164 if (yyps == 0)
1165 yypstate_delete (yyps_local);
1166 return yystatus;
1167 }]])[
1168
1169 /* Initialize the parser data structure. */
1170 ]b4_c_function_def([[yypstate_new]], [[yypstate *]])[
1171 {
1172 yypstate *yyps;]b4_pure_if([], [[
1173 if (yypstate_allocated)
1174 return 0;]])[
1175 yyps = (yypstate *) malloc (sizeof *yyps);
1176 if (!yyps)
1177 return 0;
1178 yyps->yynew = 1;]b4_pure_if([], [[
1179 yypstate_allocated = 1;]])[
1180 return yyps;
1181 }
1182
1183 ]b4_c_function_def([[yypstate_delete]], [[void]],
1184 [[[yypstate *yyps]], [[yyps]]])[
1185 {
1186 #ifndef yyoverflow
1187 /* If the stack was reallocated but the parse did not complete, then the
1188 stack still needs to be freed. */
1189 if (!yyps->yynew && yyps->yyss != yyps->yyssa)
1190 YYSTACK_FREE (yyps->yyss);
1191 #endif
1192 free (yyps);]b4_pure_if([], [[
1193 yypstate_allocated = 0;]])[
1194 }
1195 ]b4_pure_if([[
1196 #define ]b4_prefix[nerrs yyps->]b4_prefix[nerrs]])[
1197 #define yystate yyps->yystate
1198 #define yyerrstatus yyps->yyerrstatus
1199 #define yyssa yyps->yyssa
1200 #define yyss yyps->yyss
1201 #define yyssp yyps->yyssp
1202 #define yyvsa yyps->yyvsa
1203 #define yyvs yyps->yyvs
1204 #define yyvsp yyps->yyvsp]b4_locations_if([[
1205 #define yylsa yyps->yylsa
1206 #define yyls yyps->yyls
1207 #define yylsp yyps->yylsp
1208 #define yyerror_range yyps->yyerror_range]])[
1209 #define yystacksize yyps->yystacksize
1210
1211
1212 /*---------------.
1213 | yypush_parse. |
1214 `---------------*/
1215
1216 ]b4_c_function_def([[yypush_parse]], [[int]],
1217 [[[yypstate *yyps]], [[yyps]]]b4_pure_if([,
1218 [[[int yypushed_char]], [[yypushed_char]]],
1219 [[[YYSTYPE const *yypushed_val]], [[yypushed_val]]]b4_locations_if([,
1220 [[[YYLTYPE const *yypushed_loc]], [[yypushed_loc]]]])])m4_ifset([b4_parse_param], [,
1221 b4_parse_param]))], [[
1222
1223
1224 /*----------.
1225 | yyparse. |
1226 `----------*/
1227
1228 #ifdef YYPARSE_PARAM
1229 ]b4_c_function_def([yyparse], [int],
1230 [[void *YYPARSE_PARAM], [YYPARSE_PARAM]])[
1231 #else /* ! YYPARSE_PARAM */
1232 ]b4_c_function_def([yyparse], [int], b4_parse_param)[
1233 #endif]])[
1234 {]b4_pure_if([b4_declare_scanner_communication_variables
1235 ])b4_push_if([b4_pure_if([], [[
1236 int yypushed_char = yychar;
1237 YYSTYPE yypushed_val = yylval;]b4_locations_if([[
1238 YYLTYPE yypushed_loc = yylloc;]])
1239 ])],
1240 [b4_declare_parser_state_variables
1241 ])[
1242 int yyn;
1243 int yyresult;
1244 /* Lookahead token as an internal (translated) token number. */
1245 int yytoken;
1246 /* The variables used to return semantic value and location from the
1247 action routines. */
1248 YYSTYPE yyval;]b4_locations_if([[
1249 YYLTYPE yyloc;]])[
1250
1251 #if YYERROR_VERBOSE
1252 /* Buffer for error messages, and its allocated size. */
1253 char yymsgbuf[128];
1254 char *yymsg = yymsgbuf;
1255 YYSIZE_T yymsg_alloc = sizeof yymsgbuf;
1256 #endif
1257
1258 #define YYPOPSTACK(N) (yyvsp -= (N), yyssp -= (N)]b4_locations_if([, yylsp -= (N)])[)
1259
1260 /* The number of symbols on the RHS of the reduced rule.
1261 Keep to zero when no symbol should be popped. */
1262 int yylen = 0;]b4_push_if([[
1263
1264 if (!yyps->yynew)
1265 {
1266 yyn = yypact[yystate];
1267 goto yyread_pushed_token;
1268 }]])[
1269
1270 yytoken = 0;
1271 yyss = yyssa;
1272 yyvs = yyvsa;]b4_locations_if([[
1273 yyls = yylsa;]])[
1274 yystacksize = YYINITDEPTH;
1275
1276 YYDPRINTF ((stderr, "Starting parse\n"));
1277
1278 yystate = 0;
1279 yyerrstatus = 0;
1280 yynerrs = 0;
1281 yychar = YYEMPTY; /* Cause a token to be read. */
1282
1283 /* Initialize stack pointers.
1284 Waste one element of value and location stack
1285 so that they stay on the same level as the state stack.
1286 The wasted elements are never initialized. */
1287 yyssp = yyss;
1288 yyvsp = yyvs;]b4_locations_if([[
1289 yylsp = yyls;
1290
1291 #if defined YYLTYPE_IS_TRIVIAL && YYLTYPE_IS_TRIVIAL
1292 /* Initialize the default location before parsing starts. */
1293 yylloc.first_line = yylloc.last_line = ]b4_location_initial_line[;
1294 yylloc.first_column = yylloc.last_column = ]b4_location_initial_column[;
1295 #endif]])
1296 m4_ifdef([b4_initial_action],[
1297 m4_pushdef([b4_at_dollar], [m4_define([b4_at_dollar_used])yylloc])dnl
1298 m4_pushdef([b4_dollar_dollar], [m4_define([b4_dollar_dollar_used])yylval])dnl
1299 /* User initialization code. */
1300 b4_user_initial_action
1301 m4_popdef([b4_dollar_dollar])dnl
1302 m4_popdef([b4_at_dollar])])dnl
1303 m4_ifdef([b4_dollar_dollar_used],[[ yyvsp[0] = yylval;
1304 ]])dnl
1305 m4_ifdef([b4_at_dollar_used], [[ yylsp[0] = yylloc;
1306 ]])[
1307 goto yysetstate;
1308
1309 /*------------------------------------------------------------.
1310 | yynewstate -- Push a new state, which is found in yystate. |
1311 `------------------------------------------------------------*/
1312 yynewstate:
1313 /* In all cases, when you get here, the value and location stacks
1314 have just been pushed. So pushing a state here evens the stacks. */
1315 yyssp++;
1316
1317 yysetstate:
1318 *yyssp = yystate;
1319
1320 if (yyss + yystacksize - 1 <= yyssp)
1321 {
1322 /* Get the current used size of the three stacks, in elements. */
1323 YYSIZE_T yysize = yyssp - yyss + 1;
1324
1325 #ifdef yyoverflow
1326 {
1327 /* Give user a chance to reallocate the stack. Use copies of
1328 these so that the &'s don't force the real ones into
1329 memory. */
1330 YYSTYPE *yyvs1 = yyvs;
1331 yytype_int16 *yyss1 = yyss;]b4_locations_if([
1332 YYLTYPE *yyls1 = yyls;])[
1333
1334 /* Each stack pointer address is followed by the size of the
1335 data in use in that stack, in bytes. This used to be a
1336 conditional around just the two extra args, but that might
1337 be undefined if yyoverflow is a macro. */
1338 yyoverflow (YY_("memory exhausted"),
1339 &yyss1, yysize * sizeof (*yyssp),
1340 &yyvs1, yysize * sizeof (*yyvsp),]b4_locations_if([
1341 &yyls1, yysize * sizeof (*yylsp),])[
1342 &yystacksize);
1343 ]b4_locations_if([
1344 yyls = yyls1;])[
1345 yyss = yyss1;
1346 yyvs = yyvs1;
1347 }
1348 #else /* no yyoverflow */
1349 # ifndef YYSTACK_RELOCATE
1350 goto yyexhaustedlab;
1351 # else
1352 /* Extend the stack our own way. */
1353 if (YYMAXDEPTH <= yystacksize)
1354 goto yyexhaustedlab;
1355 yystacksize *= 2;
1356 if (YYMAXDEPTH < yystacksize)
1357 yystacksize = YYMAXDEPTH;
1358
1359 {
1360 yytype_int16 *yyss1 = yyss;
1361 union yyalloc *yyptr =
1362 (union yyalloc *) YYSTACK_ALLOC (YYSTACK_BYTES (yystacksize));
1363 if (! yyptr)
1364 goto yyexhaustedlab;
1365 YYSTACK_RELOCATE (yyss_alloc, yyss);
1366 YYSTACK_RELOCATE (yyvs_alloc, yyvs);]b4_locations_if([
1367 YYSTACK_RELOCATE (yyls_alloc, yyls);])[
1368 # undef YYSTACK_RELOCATE
1369 if (yyss1 != yyssa)
1370 YYSTACK_FREE (yyss1);
1371 }
1372 # endif
1373 #endif /* no yyoverflow */
1374
1375 yyssp = yyss + yysize - 1;
1376 yyvsp = yyvs + yysize - 1;]b4_locations_if([
1377 yylsp = yyls + yysize - 1;])[
1378
1379 YYDPRINTF ((stderr, "Stack size increased to %lu\n",
1380 (unsigned long int) yystacksize));
1381
1382 if (yyss + yystacksize - 1 <= yyssp)
1383 YYABORT;
1384 }
1385
1386 YYDPRINTF ((stderr, "Entering state %d\n", yystate));
1387
1388 if (yystate == YYFINAL)
1389 YYACCEPT;
1390
1391 goto yybackup;
1392
1393 /*-----------.
1394 | yybackup. |
1395 `-----------*/
1396 yybackup:
1397
1398 /* Do appropriate processing given the current state. Read a
1399 lookahead token if we need one and don't already have one. */
1400
1401 /* First try to decide what to do without reference to lookahead token. */
1402 yyn = yypact[yystate];
1403 if (yypact_value_is_default (yyn))
1404 goto yydefault;
1405
1406 /* Not known => get a lookahead token if don't already have one. */
1407
1408 /* YYCHAR is either YYEMPTY or YYEOF or a valid lookahead symbol. */
1409 if (yychar == YYEMPTY)
1410 {]b4_push_if([[
1411 if (!yyps->yynew)
1412 {]b4_use_push_for_pull_if([], [[
1413 YYDPRINTF ((stderr, "Return for a new token:\n"));]])[
1414 yyresult = YYPUSH_MORE;
1415 goto yypushreturn;
1416 }
1417 yyps->yynew = 0;]b4_pure_if([], [[
1418 /* Restoring the pushed token is only necessary for the first
1419 yypush_parse invocation since subsequent invocations don't overwrite
1420 it before jumping to yyread_pushed_token. */
1421 yychar = yypushed_char;
1422 yylval = yypushed_val;]b4_locations_if([[
1423 yylloc = yypushed_loc;]])])[
1424 yyread_pushed_token:]])[
1425 YYDPRINTF ((stderr, "Reading a token: "));]b4_push_if([b4_pure_if([[
1426 yychar = yypushed_char;
1427 if (yypushed_val)
1428 yylval = *yypushed_val;]b4_locations_if([[
1429 if (yypushed_loc)
1430 yylloc = *yypushed_loc;]])])], [[
1431 yychar = YYLEX;]])[
1432 }
1433
1434 if (yychar <= YYEOF)
1435 {
1436 yychar = yytoken = YYEOF;
1437 YYDPRINTF ((stderr, "Now at end of input.\n"));
1438 }
1439 else
1440 {
1441 yytoken = YYTRANSLATE (yychar);
1442 YY_SYMBOL_PRINT ("Next token is", yytoken, &yylval, &yylloc);
1443 }
1444
1445 /* If the proper action on seeing token YYTOKEN is to reduce or to
1446 detect an error, take that action. */
1447 yyn += yytoken;
1448 if (yyn < 0 || YYLAST < yyn || yycheck[yyn] != yytoken)
1449 goto yydefault;
1450 yyn = yytable[yyn];
1451 if (yyn <= 0)
1452 {
1453 if (yytable_value_is_error (yyn))
1454 goto yyerrlab;
1455 yyn = -yyn;
1456 goto yyreduce;
1457 }
1458
1459 /* Count tokens shifted since error; after three, turn off error
1460 status. */
1461 if (yyerrstatus)
1462 yyerrstatus--;
1463
1464 /* Shift the lookahead token. */
1465 YY_SYMBOL_PRINT ("Shifting", yytoken, &yylval, &yylloc);
1466
1467 /* Discard the shifted token. */
1468 yychar = YYEMPTY;
1469
1470 yystate = yyn;
1471 *++yyvsp = yylval;
1472 ]b4_locations_if([ *++yylsp = yylloc;])[
1473 goto yynewstate;
1474
1475
1476 /*-----------------------------------------------------------.
1477 | yydefault -- do the default action for the current state. |
1478 `-----------------------------------------------------------*/
1479 yydefault:
1480 yyn = yydefact[yystate];
1481 if (yyn == 0)
1482 goto yyerrlab;
1483 goto yyreduce;
1484
1485
1486 /*-----------------------------.
1487 | yyreduce -- Do a reduction. |
1488 `-----------------------------*/
1489 yyreduce:
1490 /* yyn is the number of a rule to reduce with. */
1491 yylen = yyr2[yyn];
1492
1493 /* If YYLEN is nonzero, implement the default value of the action:
1494 `$$ = $1'.
1495
1496 Otherwise, the following line sets YYVAL to garbage.
1497 This behavior is undocumented and Bison
1498 users should not rely upon it. Assigning to YYVAL
1499 unconditionally makes the parser a bit smaller, and it avoids a
1500 GCC warning that YYVAL may be used uninitialized. */
1501 yyval = yyvsp[1-yylen];
1502
1503 ]b4_locations_if(
1504 [[ /* Default location. */
1505 YYLLOC_DEFAULT (yyloc, (yylsp - yylen), yylen);]])[
1506 YY_REDUCE_PRINT (yyn);
1507 switch (yyn)
1508 {
1509 ]b4_user_actions[
1510 default: break;
1511 }
1512 /* User semantic actions sometimes alter yychar, and that requires
1513 that yytoken be updated with the new translation. We take the
1514 approach of translating immediately before every use of yytoken.
1515 One alternative is translating here after every semantic action,
1516 but that translation would be missed if the semantic action invokes
1517 YYABORT, YYACCEPT, or YYERROR immediately after altering yychar or
1518 if it invokes YYBACKUP. In the case of YYABORT or YYACCEPT, an
1519 incorrect destructor might then be invoked immediately. In the
1520 case of YYERROR or YYBACKUP, subsequent parser actions might lead
1521 to an incorrect destructor call or verbose syntax error message
1522 before the lookahead is translated. */
1523 YY_SYMBOL_PRINT ("-> $$ =", yyr1[yyn], &yyval, &yyloc);
1524
1525 YYPOPSTACK (yylen);
1526 yylen = 0;
1527 YY_STACK_PRINT (yyss, yyssp);
1528
1529 *++yyvsp = yyval;]b4_locations_if([
1530 *++yylsp = yyloc;])[
1531
1532 /* Now `shift' the result of the reduction. Determine what state
1533 that goes to, based on the state we popped back to and the rule
1534 number reduced by. */
1535
1536 yyn = yyr1[yyn];
1537
1538 yystate = yypgoto[yyn - YYNTOKENS] + *yyssp;
1539 if (0 <= yystate && yystate <= YYLAST && yycheck[yystate] == *yyssp)
1540 yystate = yytable[yystate];
1541 else
1542 yystate = yydefgoto[yyn - YYNTOKENS];
1543
1544 goto yynewstate;
1545
1546
1547 /*------------------------------------.
1548 | yyerrlab -- here on detecting error |
1549 `------------------------------------*/
1550 yyerrlab:
1551 /* Make sure we have latest lookahead translation. See comments at
1552 user semantic actions for why this is necessary. */
1553 yytoken = yychar == YYEMPTY ? YYEMPTY : YYTRANSLATE (yychar);
1554
1555 /* If not already recovering from an error, report this error. */
1556 if (!yyerrstatus)
1557 {
1558 ++yynerrs;
1559 #if ! YYERROR_VERBOSE
1560 yyerror (]b4_yyerror_args[YY_("syntax error"));
1561 #else
1562 # define YYSYNTAX_ERROR yysyntax_error (&yymsg_alloc, &yymsg, yystate, \
1563 yytoken)
1564 {
1565 char const *yymsgp = YY_("syntax error");
1566 int yysyntax_error_status = YYSYNTAX_ERROR;
1567 if (yysyntax_error_status == 0)
1568 yymsgp = yymsg;
1569 else if (yysyntax_error_status == 1)
1570 {
1571 if (yymsg != yymsgbuf)
1572 YYSTACK_FREE (yymsg);
1573 yymsg = (char *) YYSTACK_ALLOC (yymsg_alloc);
1574 if (!yymsg)
1575 {
1576 yymsg = yymsgbuf;
1577 yymsg_alloc = sizeof yymsgbuf;
1578 yysyntax_error_status = 2;
1579 }
1580 else
1581 {
1582 yysyntax_error_status = YYSYNTAX_ERROR;
1583 yymsgp = yymsg;
1584 }
1585 }
1586 yyerror (]b4_yyerror_args[yymsgp);
1587 if (yysyntax_error_status == 2)
1588 goto yyexhaustedlab;
1589 }
1590 # undef YYSYNTAX_ERROR
1591 #endif
1592 }
1593
1594 ]b4_locations_if([[ yyerror_range[1] = yylloc;]])[
1595
1596 if (yyerrstatus == 3)
1597 {
1598 /* If just tried and failed to reuse lookahead token after an
1599 error, discard it. */
1600
1601 if (yychar <= YYEOF)
1602 {
1603 /* Return failure if at end of input. */
1604 if (yychar == YYEOF)
1605 YYABORT;
1606 }
1607 else
1608 {
1609 yydestruct ("Error: discarding",
1610 yytoken, &yylval]b4_locations_if([, &yylloc])[]b4_user_args[);
1611 yychar = YYEMPTY;
1612 }
1613 }
1614
1615 /* Else will try to reuse lookahead token after shifting the error
1616 token. */
1617 goto yyerrlab1;
1618
1619
1620 /*---------------------------------------------------.
1621 | yyerrorlab -- error raised explicitly by YYERROR. |
1622 `---------------------------------------------------*/
1623 yyerrorlab:
1624
1625 /* Pacify compilers like GCC when the user code never invokes
1626 YYERROR and the label yyerrorlab therefore never appears in user
1627 code. */
1628 if (/*CONSTCOND*/ 0)
1629 goto yyerrorlab;
1630
1631 ]b4_locations_if([[ yyerror_range[1] = yylsp[1-yylen];
1632 ]])[ /* Do not reclaim the symbols of the rule which action triggered
1633 this YYERROR. */
1634 YYPOPSTACK (yylen);
1635 yylen = 0;
1636 YY_STACK_PRINT (yyss, yyssp);
1637 yystate = *yyssp;
1638 goto yyerrlab1;
1639
1640
1641 /*-------------------------------------------------------------.
1642 | yyerrlab1 -- common code for both syntax error and YYERROR. |
1643 `-------------------------------------------------------------*/
1644 yyerrlab1:
1645 yyerrstatus = 3; /* Each real token shifted decrements this. */
1646
1647 for (;;)
1648 {
1649 yyn = yypact[yystate];
1650 if (!yypact_value_is_default (yyn))
1651 {
1652 yyn += YYTERROR;
1653 if (0 <= yyn && yyn <= YYLAST && yycheck[yyn] == YYTERROR)
1654 {
1655 yyn = yytable[yyn];
1656 if (0 < yyn)
1657 break;
1658 }
1659 }
1660
1661 /* Pop the current state because it cannot handle the error token. */
1662 if (yyssp == yyss)
1663 YYABORT;
1664
1665 ]b4_locations_if([[ yyerror_range[1] = *yylsp;]])[
1666 yydestruct ("Error: popping",
1667 yystos[yystate], yyvsp]b4_locations_if([, yylsp])[]b4_user_args[);
1668 YYPOPSTACK (1);
1669 yystate = *yyssp;
1670 YY_STACK_PRINT (yyss, yyssp);
1671 }
1672
1673 *++yyvsp = yylval;
1674 ]b4_locations_if([[
1675 yyerror_range[2] = yylloc;
1676 /* Using YYLLOC is tempting, but would change the location of
1677 the lookahead. YYLOC is available though. */
1678 YYLLOC_DEFAULT (yyloc, yyerror_range, 2);
1679 *++yylsp = yyloc;]])[
1680
1681 /* Shift the error token. */
1682 YY_SYMBOL_PRINT ("Shifting", yystos[yyn], yyvsp, yylsp);
1683
1684 yystate = yyn;
1685 goto yynewstate;
1686
1687
1688 /*-------------------------------------.
1689 | yyacceptlab -- YYACCEPT comes here. |
1690 `-------------------------------------*/
1691 yyacceptlab:
1692 yyresult = 0;
1693 goto yyreturn;
1694
1695 /*-----------------------------------.
1696 | yyabortlab -- YYABORT comes here. |
1697 `-----------------------------------*/
1698 yyabortlab:
1699 yyresult = 1;
1700 goto yyreturn;
1701
1702 #if !defined(yyoverflow) || YYERROR_VERBOSE
1703 /*-------------------------------------------------.
1704 | yyexhaustedlab -- memory exhaustion comes here. |
1705 `-------------------------------------------------*/
1706 yyexhaustedlab:
1707 yyerror (]b4_yyerror_args[YY_("memory exhausted"));
1708 yyresult = 2;
1709 /* Fall through. */
1710 #endif
1711
1712 yyreturn:
1713 if (yychar != YYEMPTY)
1714 {
1715 /* Make sure we have latest lookahead translation. See comments at
1716 user semantic actions for why this is necessary. */
1717 yytoken = YYTRANSLATE (yychar);
1718 yydestruct ("Cleanup: discarding lookahead",
1719 yytoken, &yylval]b4_locations_if([, &yylloc])[]b4_user_args[);
1720 }
1721 /* Do not reclaim the symbols of the rule which action triggered
1722 this YYABORT or YYACCEPT. */
1723 YYPOPSTACK (yylen);
1724 YY_STACK_PRINT (yyss, yyssp);
1725 while (yyssp != yyss)
1726 {
1727 yydestruct ("Cleanup: popping",
1728 yystos[*yyssp], yyvsp]b4_locations_if([, yylsp])[]b4_user_args[);
1729 YYPOPSTACK (1);
1730 }
1731 #ifndef yyoverflow
1732 if (yyss != yyssa)
1733 YYSTACK_FREE (yyss);
1734 #endif]b4_push_if([[
1735 yyps->yynew = 1;
1736
1737 yypushreturn:]])[
1738 #if YYERROR_VERBOSE
1739 if (yymsg != yymsgbuf)
1740 YYSTACK_FREE (yymsg);
1741 #endif
1742 /* Make sure YYID is used. */
1743 return YYID (yyresult);
1744 }
1745
1746
1747 ]b4_epilogue
1748 b4_defines_if(
1749 [@output(b4_spec_defines_file@)@
1750 b4_copyright([Skeleton interface for Bison's Yacc-like parsers in C],
1751 [1984, 1989, 1990, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010])
1752
1753 b4_percent_code_get([[requires]])[]dnl
1754
1755 b4_token_enums_defines(b4_tokens)
1756
1757 [#if ! defined YYSTYPE && ! defined YYSTYPE_IS_DECLARED
1758 ]m4_ifdef([b4_stype],
1759 [[typedef union ]b4_union_name[
1760 {
1761 ]b4_user_stype[
1762 } YYSTYPE;
1763 # define YYSTYPE_IS_TRIVIAL 1]],
1764 [m4_if(b4_tag_seen_flag, 0,
1765 [[typedef int YYSTYPE;
1766 # define YYSTYPE_IS_TRIVIAL 1]])])[
1767 # define yystype YYSTYPE /* obsolescent; will be withdrawn */
1768 # define YYSTYPE_IS_DECLARED 1
1769 #endif
1770
1771 ]b4_pure_if([], [[extern YYSTYPE ]b4_prefix[lval;]])
1772
1773 b4_locations_if(
1774 [#if ! defined YYLTYPE && ! defined YYLTYPE_IS_DECLARED
1775 typedef struct YYLTYPE
1776 {
1777 int first_line;
1778 int first_column;
1779 int last_line;
1780 int last_column;
1781 } YYLTYPE;
1782 # define yyltype YYLTYPE /* obsolescent; will be withdrawn */
1783 # define YYLTYPE_IS_DECLARED 1
1784 # define YYLTYPE_IS_TRIVIAL 1
1785 #endif
1786
1787 ]b4_pure_if([], [[extern YYLTYPE ]b4_prefix[lloc;]])
1788 )dnl b4_locations_if
1789 b4_push_if([[
1790 #ifndef YYPUSH_DECLS
1791 # define YYPUSH_DECLS
1792 struct ]b4_prefix[pstate;
1793 typedef struct ]b4_prefix[pstate ]b4_prefix[pstate;
1794 enum { YYPUSH_MORE = 4 };
1795 ]b4_pull_if([b4_c_function_decl([b4_prefix[parse]], [[int]], b4_parse_param)
1796 ])b4_c_function_decl([b4_prefix[push_parse]], [[int]],
1797 [[b4_prefix[pstate *yyps]], [[yyps]]]b4_pure_if([,
1798 [[[int yypushed_char]], [[yypushed_char]]],
1799 [[[YYSTYPE const *yypushed_val]], [[yypushed_val]]]b4_locations_if([,
1800 [[[YYLTYPE const *yypushed_loc]], [[yypushed_loc]]]])])m4_ifset([b4_parse_param], [,
1801 b4_parse_param]))
1802 b4_pull_if([b4_c_function_decl([b4_prefix[pull_parse]], [[int]],
1803 [[b4_prefix[pstate *yyps]], [[yyps]]]m4_ifset([b4_parse_param], [,
1804 b4_parse_param]))])
1805 b4_c_function_decl([b4_prefix[pstate_new]], [b4_prefix[pstate *]],
1806 [[[void]], []])
1807 b4_c_function_decl([b4_prefix[pstate_delete]], [[void]],
1808 [[b4_prefix[pstate *yyps]], [[yyps]]])[
1809 #endif
1810 ]])
1811 b4_percent_code_get([[provides]])[]dnl
1812 ])dnl b4_defines_if
1813 m4_divert_pop(0)
bison