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