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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 YYCHAR 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 yychar)
967 {
968 int yyn = yypact[yystate];
969
970 if (! (YYPACT_NINF < yyn && yyn <= YYLAST))
971 return 0;
972 else
973 {
974 int yytype = YYTRANSLATE (yychar);
975 YYSIZE_T yysize0 = yytnamerr (0, yytname[yytype]);
976 YYSIZE_T yysize = yysize0;
977 YYSIZE_T yysize1;
978 int yysize_overflow = 0;
979 enum { YYERROR_VERBOSE_ARGS_MAXIMUM = 5 };
980 char const *yyarg[YYERROR_VERBOSE_ARGS_MAXIMUM];
981 int yyx;
982
983 # if 0
984 /* This is so xgettext sees the translatable formats that are
985 constructed on the fly. */
986 YY_("syntax error, unexpected %s");
987 YY_("syntax error, unexpected %s, expecting %s");
988 YY_("syntax error, unexpected %s, expecting %s or %s");
989 YY_("syntax error, unexpected %s, expecting %s or %s or %s");
990 YY_("syntax error, unexpected %s, expecting %s or %s or %s or %s");
991 # endif
992 char *yyfmt;
993 char const *yyf;
994 static char const yyunexpected[] = "syntax error, unexpected %s";
995 static char const yyexpecting[] = ", expecting %s";
996 static char const yyor[] = " or %s";
997 char yyformat[sizeof yyunexpected
998 + sizeof yyexpecting - 1
999 + ((YYERROR_VERBOSE_ARGS_MAXIMUM - 2)
1000 * (sizeof yyor - 1))];
1001 char const *yyprefix = yyexpecting;
1002
1003 /* Start YYX at -YYN if negative to avoid negative indexes in
1004 YYCHECK. In other words, skip the first -YYN actions for this
1005 state because they are default actions. */
1006 int yyxbegin = yyn < 0 ? -yyn : 0;
1007
1008 /* Stay within bounds of both yycheck and yytname. */
1009 int yychecklim = YYLAST - yyn + 1;
1010 int yyxend = yychecklim < YYNTOKENS ? yychecklim : YYNTOKENS;
1011 int yycount = 1;
1012
1013 yyarg[0] = yytname[yytype];
1014 yyfmt = yystpcpy (yyformat, yyunexpected);
1015
1016 for (yyx = yyxbegin; yyx < yyxend; ++yyx)
1017 if (yycheck[yyx + yyn] == yyx && yyx != YYTERROR
1018 && !yytable_value_is_error (yytable[yyx + yyn]))
1019 {
1020 if (yycount == YYERROR_VERBOSE_ARGS_MAXIMUM)
1021 {
1022 yycount = 1;
1023 yysize = yysize0;
1024 yyformat[sizeof yyunexpected - 1] = '\0';
1025 break;
1026 }
1027 yyarg[yycount++] = yytname[yyx];
1028 yysize1 = yysize + yytnamerr (0, yytname[yyx]);
1029 yysize_overflow |= (yysize1 < yysize);
1030 yysize = yysize1;
1031 yyfmt = yystpcpy (yyfmt, yyprefix);
1032 yyprefix = yyor;
1033 }
1034
1035 yyf = YY_(yyformat);
1036 yysize1 = yysize + yystrlen (yyf);
1037 yysize_overflow |= (yysize1 < yysize);
1038 yysize = yysize1;
1039
1040 if (yysize_overflow)
1041 return YYSIZE_MAXIMUM;
1042
1043 if (yyresult)
1044 {
1045 /* Avoid sprintf, as that infringes on the user's name space.
1046 Don't have undefined behavior even if the translation
1047 produced a string with the wrong number of "%s"s. */
1048 char *yyp = yyresult;
1049 int yyi = 0;
1050 while ((*yyp = *yyf) != '\0')
1051 {
1052 if (*yyp == '%' && yyf[1] == 's' && yyi < yycount)
1053 {
1054 yyp += yytnamerr (yyp, yyarg[yyi++]);
1055 yyf += 2;
1056 }
1057 else
1058 {
1059 yyp++;
1060 yyf++;
1061 }
1062 }
1063 }
1064 return yysize;
1065 }
1066 }
1067 #endif /* YYERROR_VERBOSE */
1068 \f
1069
1070 ]b4_yydestruct_generate([b4_c_function_def])b4_push_if([], [[
1071
1072
1073 /* Prevent warnings from -Wmissing-prototypes. */
1074 #ifdef YYPARSE_PARAM
1075 ]b4_c_function_decl([yyparse], [int],
1076 [[void *YYPARSE_PARAM], [YYPARSE_PARAM]])[
1077 #else /* ! YYPARSE_PARAM */
1078 ]b4_c_function_decl([yyparse], [int], b4_parse_param)[
1079 #endif /* ! YYPARSE_PARAM */]])b4_pure_if([], [
1080
1081 b4_declare_scanner_communication_variables])[]b4_push_if([[
1082
1083
1084 struct yypstate
1085 {]b4_declare_parser_state_variables[
1086 /* Used to determine if this is the first time this instance has
1087 been used. */
1088 int yynew;
1089 };]b4_pure_if([], [[
1090
1091 static char yypstate_allocated = 0;]])b4_pull_if([
1092
1093 b4_c_function_def([[yyparse]], [[int]], b4_parse_param)[
1094 {
1095 return yypull_parse (0]m4_ifset([b4_parse_param],
1096 [[, ]b4_c_args(b4_parse_param)])[);
1097 }
1098
1099 ]b4_c_function_def([[yypull_parse]], [[int]],
1100 [[[yypstate *yyps]], [[yyps]]]m4_ifset([b4_parse_param], [,
1101 b4_parse_param]))[
1102 {
1103 int yystatus;
1104 yypstate *yyps_local;]b4_pure_if([[
1105 int yychar;
1106 YYSTYPE yylval;]b4_locations_if([[
1107 YYLTYPE yylloc;]])])[
1108 if (yyps == 0)
1109 {
1110 yyps_local = yypstate_new ();
1111 if (!yyps_local)
1112 {]b4_pure_if([[
1113 yyerror (]b4_yyerror_args[YY_("memory exhausted"));]], [[
1114 if (!yypstate_allocated)
1115 yyerror (]b4_yyerror_args[YY_("memory exhausted"));]])[
1116 return 2;
1117 }
1118 }
1119 else
1120 yyps_local = yyps;
1121 do {
1122 yychar = YYLEX;
1123 yystatus =
1124 yypush_parse (yyps_local]b4_pure_if([[, yychar, &yylval]b4_locations_if([[, &yylloc]])])m4_ifset([b4_parse_param], [, b4_c_args(b4_parse_param)])[);
1125 } while (yystatus == YYPUSH_MORE);
1126 if (yyps == 0)
1127 yypstate_delete (yyps_local);
1128 return yystatus;
1129 }]])[
1130
1131 /* Initialize the parser data structure. */
1132 ]b4_c_function_def([[yypstate_new]], [[yypstate *]])[
1133 {
1134 yypstate *yyps;]b4_pure_if([], [[
1135 if (yypstate_allocated)
1136 return 0;]])[
1137 yyps = (yypstate *) malloc (sizeof *yyps);
1138 if (!yyps)
1139 return 0;
1140 yyps->yynew = 1;]b4_pure_if([], [[
1141 yypstate_allocated = 1;]])[
1142 return yyps;
1143 }
1144
1145 ]b4_c_function_def([[yypstate_delete]], [[void]],
1146 [[[yypstate *yyps]], [[yyps]]])[
1147 {
1148 #ifndef yyoverflow
1149 /* If the stack was reallocated but the parse did not complete, then the
1150 stack still needs to be freed. */
1151 if (!yyps->yynew && yyps->yyss != yyps->yyssa)
1152 YYSTACK_FREE (yyps->yyss);
1153 #endif
1154 free (yyps);]b4_pure_if([], [[
1155 yypstate_allocated = 0;]])[
1156 }
1157 ]b4_pure_if([[
1158 #define ]b4_prefix[nerrs yyps->]b4_prefix[nerrs]])[
1159 #define yystate yyps->yystate
1160 #define yyerrstatus yyps->yyerrstatus
1161 #define yyssa yyps->yyssa
1162 #define yyss yyps->yyss
1163 #define yyssp yyps->yyssp
1164 #define yyvsa yyps->yyvsa
1165 #define yyvs yyps->yyvs
1166 #define yyvsp yyps->yyvsp]b4_locations_if([[
1167 #define yylsa yyps->yylsa
1168 #define yyls yyps->yyls
1169 #define yylsp yyps->yylsp
1170 #define yyerror_range yyps->yyerror_range]])[
1171 #define yystacksize yyps->yystacksize
1172
1173
1174 /*---------------.
1175 | yypush_parse. |
1176 `---------------*/
1177
1178 ]b4_c_function_def([[yypush_parse]], [[int]],
1179 [[[yypstate *yyps]], [[yyps]]]b4_pure_if([,
1180 [[[int yypushed_char]], [[yypushed_char]]],
1181 [[[YYSTYPE const *yypushed_val]], [[yypushed_val]]]b4_locations_if([,
1182 [[[YYLTYPE const *yypushed_loc]], [[yypushed_loc]]]])])m4_ifset([b4_parse_param], [,
1183 b4_parse_param]))], [[
1184
1185
1186 /*----------.
1187 | yyparse. |
1188 `----------*/
1189
1190 #ifdef YYPARSE_PARAM
1191 ]b4_c_function_def([yyparse], [int],
1192 [[void *YYPARSE_PARAM], [YYPARSE_PARAM]])[
1193 #else /* ! YYPARSE_PARAM */
1194 ]b4_c_function_def([yyparse], [int], b4_parse_param)[
1195 #endif]])[
1196 {]b4_pure_if([b4_declare_scanner_communication_variables
1197 ])b4_push_if([b4_pure_if([], [[
1198 int yypushed_char = yychar;
1199 YYSTYPE yypushed_val = yylval;]b4_locations_if([[
1200 YYLTYPE yypushed_loc = yylloc;]])
1201 ])],
1202 [b4_declare_parser_state_variables
1203 ])[
1204 int yyn;
1205 int yyresult;
1206 /* Lookahead token as an internal (translated) token number. */
1207 int yytoken;
1208 /* The variables used to return semantic value and location from the
1209 action routines. */
1210 YYSTYPE yyval;]b4_locations_if([[
1211 YYLTYPE yyloc;]])[
1212
1213 #if YYERROR_VERBOSE
1214 /* Buffer for error messages, and its allocated size. */
1215 char yymsgbuf[128];
1216 char *yymsg = yymsgbuf;
1217 YYSIZE_T yymsg_alloc = sizeof yymsgbuf;
1218 #endif
1219
1220 #define YYPOPSTACK(N) (yyvsp -= (N), yyssp -= (N)]b4_locations_if([, yylsp -= (N)])[)
1221
1222 /* The number of symbols on the RHS of the reduced rule.
1223 Keep to zero when no symbol should be popped. */
1224 int yylen = 0;]b4_push_if([[
1225
1226 if (!yyps->yynew)
1227 {
1228 yyn = yypact[yystate];
1229 goto yyread_pushed_token;
1230 }]])[
1231
1232 yytoken = 0;
1233 yyss = yyssa;
1234 yyvs = yyvsa;]b4_locations_if([[
1235 yyls = yylsa;]])[
1236 yystacksize = YYINITDEPTH;
1237
1238 YYDPRINTF ((stderr, "Starting parse\n"));
1239
1240 yystate = 0;
1241 yyerrstatus = 0;
1242 yynerrs = 0;
1243 yychar = YYEMPTY; /* Cause a token to be read. */
1244
1245 /* Initialize stack pointers.
1246 Waste one element of value and location stack
1247 so that they stay on the same level as the state stack.
1248 The wasted elements are never initialized. */
1249 yyssp = yyss;
1250 yyvsp = yyvs;]b4_locations_if([[
1251 yylsp = yyls;
1252
1253 #if YYLTYPE_IS_TRIVIAL
1254 /* Initialize the default location before parsing starts. */
1255 yylloc.first_line = yylloc.last_line = ]b4_location_initial_line[;
1256 yylloc.first_column = yylloc.last_column = ]b4_location_initial_column[;
1257 #endif]])
1258 m4_ifdef([b4_initial_action],[
1259 m4_pushdef([b4_at_dollar], [m4_define([b4_at_dollar_used])yylloc])dnl
1260 m4_pushdef([b4_dollar_dollar], [m4_define([b4_dollar_dollar_used])yylval])dnl
1261 /* User initialization code. */
1262 b4_user_initial_action
1263 m4_popdef([b4_dollar_dollar])dnl
1264 m4_popdef([b4_at_dollar])])dnl
1265 m4_ifdef([b4_dollar_dollar_used],[[ yyvsp[0] = yylval;
1266 ]])dnl
1267 m4_ifdef([b4_at_dollar_used], [[ yylsp[0] = yylloc;
1268 ]])[
1269 goto yysetstate;
1270
1271 /*------------------------------------------------------------.
1272 | yynewstate -- Push a new state, which is found in yystate. |
1273 `------------------------------------------------------------*/
1274 yynewstate:
1275 /* In all cases, when you get here, the value and location stacks
1276 have just been pushed. So pushing a state here evens the stacks. */
1277 yyssp++;
1278
1279 yysetstate:
1280 *yyssp = yystate;
1281
1282 if (yyss + yystacksize - 1 <= yyssp)
1283 {
1284 /* Get the current used size of the three stacks, in elements. */
1285 YYSIZE_T yysize = yyssp - yyss + 1;
1286
1287 #ifdef yyoverflow
1288 {
1289 /* Give user a chance to reallocate the stack. Use copies of
1290 these so that the &'s don't force the real ones into
1291 memory. */
1292 YYSTYPE *yyvs1 = yyvs;
1293 yytype_int16 *yyss1 = yyss;]b4_locations_if([
1294 YYLTYPE *yyls1 = yyls;])[
1295
1296 /* Each stack pointer address is followed by the size of the
1297 data in use in that stack, in bytes. This used to be a
1298 conditional around just the two extra args, but that might
1299 be undefined if yyoverflow is a macro. */
1300 yyoverflow (YY_("memory exhausted"),
1301 &yyss1, yysize * sizeof (*yyssp),
1302 &yyvs1, yysize * sizeof (*yyvsp),]b4_locations_if([
1303 &yyls1, yysize * sizeof (*yylsp),])[
1304 &yystacksize);
1305 ]b4_locations_if([
1306 yyls = yyls1;])[
1307 yyss = yyss1;
1308 yyvs = yyvs1;
1309 }
1310 #else /* no yyoverflow */
1311 # ifndef YYSTACK_RELOCATE
1312 goto yyexhaustedlab;
1313 # else
1314 /* Extend the stack our own way. */
1315 if (YYMAXDEPTH <= yystacksize)
1316 goto yyexhaustedlab;
1317 yystacksize *= 2;
1318 if (YYMAXDEPTH < yystacksize)
1319 yystacksize = YYMAXDEPTH;
1320
1321 {
1322 yytype_int16 *yyss1 = yyss;
1323 union yyalloc *yyptr =
1324 (union yyalloc *) YYSTACK_ALLOC (YYSTACK_BYTES (yystacksize));
1325 if (! yyptr)
1326 goto yyexhaustedlab;
1327 YYSTACK_RELOCATE (yyss_alloc, yyss);
1328 YYSTACK_RELOCATE (yyvs_alloc, yyvs);]b4_locations_if([
1329 YYSTACK_RELOCATE (yyls_alloc, yyls);])[
1330 # undef YYSTACK_RELOCATE
1331 if (yyss1 != yyssa)
1332 YYSTACK_FREE (yyss1);
1333 }
1334 # endif
1335 #endif /* no yyoverflow */
1336
1337 yyssp = yyss + yysize - 1;
1338 yyvsp = yyvs + yysize - 1;]b4_locations_if([
1339 yylsp = yyls + yysize - 1;])[
1340
1341 YYDPRINTF ((stderr, "Stack size increased to %lu\n",
1342 (unsigned long int) yystacksize));
1343
1344 if (yyss + yystacksize - 1 <= yyssp)
1345 YYABORT;
1346 }
1347
1348 YYDPRINTF ((stderr, "Entering state %d\n", yystate));
1349
1350 if (yystate == YYFINAL)
1351 YYACCEPT;
1352
1353 goto yybackup;
1354
1355 /*-----------.
1356 | yybackup. |
1357 `-----------*/
1358 yybackup:
1359
1360 /* Do appropriate processing given the current state. Read a
1361 lookahead token if we need one and don't already have one. */
1362
1363 /* First try to decide what to do without reference to lookahead token. */
1364 yyn = yypact[yystate];
1365 if (yypact_value_is_default (yyn))
1366 goto yydefault;
1367
1368 /* Not known => get a lookahead token if don't already have one. */
1369
1370 /* YYCHAR is either YYEMPTY or YYEOF or a valid lookahead symbol. */
1371 if (yychar == YYEMPTY)
1372 {]b4_push_if([[
1373 if (!yyps->yynew)
1374 {]b4_use_push_for_pull_if([], [[
1375 YYDPRINTF ((stderr, "Return for a new token:\n"));]])[
1376 yyresult = YYPUSH_MORE;
1377 goto yypushreturn;
1378 }
1379 yyps->yynew = 0;]b4_pure_if([], [[
1380 /* Restoring the pushed token is only necessary for the first
1381 yypush_parse invocation since subsequent invocations don't overwrite
1382 it before jumping to yyread_pushed_token. */
1383 yychar = yypushed_char;
1384 yylval = yypushed_val;]b4_locations_if([[
1385 yylloc = yypushed_loc;]])])[
1386 yyread_pushed_token:]])[
1387 YYDPRINTF ((stderr, "Reading a token: "));]b4_push_if([b4_pure_if([[
1388 yychar = yypushed_char;
1389 if (yypushed_val)
1390 yylval = *yypushed_val;]b4_locations_if([[
1391 if (yypushed_loc)
1392 yylloc = *yypushed_loc;]])])], [[
1393 yychar = YYLEX;]])[
1394 }
1395
1396 if (yychar <= YYEOF)
1397 {
1398 yychar = yytoken = YYEOF;
1399 YYDPRINTF ((stderr, "Now at end of input.\n"));
1400 }
1401 else
1402 {
1403 yytoken = YYTRANSLATE (yychar);
1404 YY_SYMBOL_PRINT ("Next token is", yytoken, &yylval, &yylloc);
1405 }
1406
1407 /* If the proper action on seeing token YYTOKEN is to reduce or to
1408 detect an error, take that action. */
1409 yyn += yytoken;
1410 if (yyn < 0 || YYLAST < yyn || yycheck[yyn] != yytoken)
1411 goto yydefault;
1412 yyn = yytable[yyn];
1413 if (yyn <= 0)
1414 {
1415 if (yytable_value_is_error (yyn))
1416 goto yyerrlab;
1417 yyn = -yyn;
1418 goto yyreduce;
1419 }
1420
1421 /* Count tokens shifted since error; after three, turn off error
1422 status. */
1423 if (yyerrstatus)
1424 yyerrstatus--;
1425
1426 /* Shift the lookahead token. */
1427 YY_SYMBOL_PRINT ("Shifting", yytoken, &yylval, &yylloc);
1428
1429 /* Discard the shifted token. */
1430 yychar = YYEMPTY;
1431
1432 yystate = yyn;
1433 *++yyvsp = yylval;
1434 ]b4_locations_if([ *++yylsp = yylloc;])[
1435 goto yynewstate;
1436
1437
1438 /*-----------------------------------------------------------.
1439 | yydefault -- do the default action for the current state. |
1440 `-----------------------------------------------------------*/
1441 yydefault:
1442 yyn = yydefact[yystate];
1443 if (yyn == 0)
1444 goto yyerrlab;
1445 goto yyreduce;
1446
1447
1448 /*-----------------------------.
1449 | yyreduce -- Do a reduction. |
1450 `-----------------------------*/
1451 yyreduce:
1452 /* yyn is the number of a rule to reduce with. */
1453 yylen = yyr2[yyn];
1454
1455 /* If YYLEN is nonzero, implement the default value of the action:
1456 `$$ = $1'.
1457
1458 Otherwise, the following line sets YYVAL to garbage.
1459 This behavior is undocumented and Bison
1460 users should not rely upon it. Assigning to YYVAL
1461 unconditionally makes the parser a bit smaller, and it avoids a
1462 GCC warning that YYVAL may be used uninitialized. */
1463 yyval = yyvsp[1-yylen];
1464
1465 ]b4_locations_if(
1466 [[ /* Default location. */
1467 YYLLOC_DEFAULT (yyloc, (yylsp - yylen), yylen);]])[
1468 YY_REDUCE_PRINT (yyn);
1469 switch (yyn)
1470 {
1471 ]b4_user_actions[
1472 default: break;
1473 }
1474 YY_SYMBOL_PRINT ("-> $$ =", yyr1[yyn], &yyval, &yyloc);
1475
1476 YYPOPSTACK (yylen);
1477 yylen = 0;
1478 YY_STACK_PRINT (yyss, yyssp);
1479
1480 *++yyvsp = yyval;]b4_locations_if([
1481 *++yylsp = yyloc;])[
1482
1483 /* Now `shift' the result of the reduction. Determine what state
1484 that goes to, based on the state we popped back to and the rule
1485 number reduced by. */
1486
1487 yyn = yyr1[yyn];
1488
1489 yystate = yypgoto[yyn - YYNTOKENS] + *yyssp;
1490 if (0 <= yystate && yystate <= YYLAST && yycheck[yystate] == *yyssp)
1491 yystate = yytable[yystate];
1492 else
1493 yystate = yydefgoto[yyn - YYNTOKENS];
1494
1495 goto yynewstate;
1496
1497
1498 /*------------------------------------.
1499 | yyerrlab -- here on detecting error |
1500 `------------------------------------*/
1501 yyerrlab:
1502 /* If not already recovering from an error, report this error. */
1503 if (!yyerrstatus)
1504 {
1505 ++yynerrs;
1506 #if ! YYERROR_VERBOSE
1507 yyerror (]b4_yyerror_args[YY_("syntax error"));
1508 #else
1509 {
1510 YYSIZE_T yysize = yysyntax_error (0, yystate, yychar);
1511 if (yymsg_alloc < yysize && yymsg_alloc < YYSTACK_ALLOC_MAXIMUM)
1512 {
1513 YYSIZE_T yyalloc = 2 * yysize;
1514 if (! (yysize <= yyalloc && yyalloc <= YYSTACK_ALLOC_MAXIMUM))
1515 yyalloc = YYSTACK_ALLOC_MAXIMUM;
1516 if (yymsg != yymsgbuf)
1517 YYSTACK_FREE (yymsg);
1518 yymsg = (char *) YYSTACK_ALLOC (yyalloc);
1519 if (yymsg)
1520 yymsg_alloc = yyalloc;
1521 else
1522 {
1523 yymsg = yymsgbuf;
1524 yymsg_alloc = sizeof yymsgbuf;
1525 }
1526 }
1527
1528 if (0 < yysize && yysize <= yymsg_alloc)
1529 {
1530 (void) yysyntax_error (yymsg, yystate, yychar);
1531 yyerror (]b4_yyerror_args[yymsg);
1532 }
1533 else
1534 {
1535 yyerror (]b4_yyerror_args[YY_("syntax error"));
1536 if (yysize != 0)
1537 goto yyexhaustedlab;
1538 }
1539 }
1540 #endif
1541 }
1542
1543 ]b4_locations_if([[ yyerror_range[0] = yylloc;]])[
1544
1545 if (yyerrstatus == 3)
1546 {
1547 /* If just tried and failed to reuse lookahead token after an
1548 error, discard it. */
1549
1550 if (yychar <= YYEOF)
1551 {
1552 /* Return failure if at end of input. */
1553 if (yychar == YYEOF)
1554 YYABORT;
1555 }
1556 else
1557 {
1558 yydestruct ("Error: discarding",
1559 yytoken, &yylval]b4_locations_if([, &yylloc])[]b4_user_args[);
1560 yychar = YYEMPTY;
1561 }
1562 }
1563
1564 /* Else will try to reuse lookahead token after shifting the error
1565 token. */
1566 goto yyerrlab1;
1567
1568
1569 /*---------------------------------------------------.
1570 | yyerrorlab -- error raised explicitly by YYERROR. |
1571 `---------------------------------------------------*/
1572 yyerrorlab:
1573
1574 /* Pacify compilers like GCC when the user code never invokes
1575 YYERROR and the label yyerrorlab therefore never appears in user
1576 code. */
1577 if (/*CONSTCOND*/ 0)
1578 goto yyerrorlab;
1579
1580 ]b4_locations_if([[ yyerror_range[0] = yylsp[1-yylen];
1581 ]])[ /* Do not reclaim the symbols of the rule which action triggered
1582 this YYERROR. */
1583 YYPOPSTACK (yylen);
1584 yylen = 0;
1585 YY_STACK_PRINT (yyss, yyssp);
1586 yystate = *yyssp;
1587 goto yyerrlab1;
1588
1589
1590 /*-------------------------------------------------------------.
1591 | yyerrlab1 -- common code for both syntax error and YYERROR. |
1592 `-------------------------------------------------------------*/
1593 yyerrlab1:
1594 yyerrstatus = 3; /* Each real token shifted decrements this. */
1595
1596 for (;;)
1597 {
1598 yyn = yypact[yystate];
1599 if (!yypact_value_is_default (yyn))
1600 {
1601 yyn += YYTERROR;
1602 if (0 <= yyn && yyn <= YYLAST && yycheck[yyn] == YYTERROR)
1603 {
1604 yyn = yytable[yyn];
1605 if (0 < yyn)
1606 break;
1607 }
1608 }
1609
1610 /* Pop the current state because it cannot handle the error token. */
1611 if (yyssp == yyss)
1612 YYABORT;
1613
1614 ]b4_locations_if([[ yyerror_range[0] = *yylsp;]])[
1615 yydestruct ("Error: popping",
1616 yystos[yystate], yyvsp]b4_locations_if([, yylsp])[]b4_user_args[);
1617 YYPOPSTACK (1);
1618 yystate = *yyssp;
1619 YY_STACK_PRINT (yyss, yyssp);
1620 }
1621
1622 *++yyvsp = yylval;
1623 ]b4_locations_if([[
1624 yyerror_range[1] = yylloc;
1625 /* Using YYLLOC is tempting, but would change the location of
1626 the lookahead. YYLOC is available though. */
1627 YYLLOC_DEFAULT (yyloc, (yyerror_range - 1), 2);
1628 *++yylsp = yyloc;]])[
1629
1630 /* Shift the error token. */
1631 YY_SYMBOL_PRINT ("Shifting", yystos[yyn], yyvsp, yylsp);
1632
1633 yystate = yyn;
1634 goto yynewstate;
1635
1636
1637 /*-------------------------------------.
1638 | yyacceptlab -- YYACCEPT comes here. |
1639 `-------------------------------------*/
1640 yyacceptlab:
1641 yyresult = 0;
1642 goto yyreturn;
1643
1644 /*-----------------------------------.
1645 | yyabortlab -- YYABORT comes here. |
1646 `-----------------------------------*/
1647 yyabortlab:
1648 yyresult = 1;
1649 goto yyreturn;
1650
1651 #if !defined(yyoverflow) || YYERROR_VERBOSE
1652 /*-------------------------------------------------.
1653 | yyexhaustedlab -- memory exhaustion comes here. |
1654 `-------------------------------------------------*/
1655 yyexhaustedlab:
1656 yyerror (]b4_yyerror_args[YY_("memory exhausted"));
1657 yyresult = 2;
1658 /* Fall through. */
1659 #endif
1660
1661 yyreturn:
1662 if (yychar != YYEMPTY)
1663 yydestruct ("Cleanup: discarding lookahead",
1664 yytoken, &yylval]b4_locations_if([, &yylloc])[]b4_user_args[);
1665 /* Do not reclaim the symbols of the rule which action triggered
1666 this YYABORT or YYACCEPT. */
1667 YYPOPSTACK (yylen);
1668 YY_STACK_PRINT (yyss, yyssp);
1669 while (yyssp != yyss)
1670 {
1671 yydestruct ("Cleanup: popping",
1672 yystos[*yyssp], yyvsp]b4_locations_if([, yylsp])[]b4_user_args[);
1673 YYPOPSTACK (1);
1674 }
1675 #ifndef yyoverflow
1676 if (yyss != yyssa)
1677 YYSTACK_FREE (yyss);
1678 #endif]b4_push_if([[
1679 yyps->yynew = 1;
1680
1681 yypushreturn:]])[
1682 #if YYERROR_VERBOSE
1683 if (yymsg != yymsgbuf)
1684 YYSTACK_FREE (yymsg);
1685 #endif
1686 /* Make sure YYID is used. */
1687 return YYID (yyresult);
1688 }
1689
1690
1691 ]b4_epilogue
1692 b4_defines_if(
1693 [@output(b4_spec_defines_file@)@
1694 b4_copyright([Skeleton interface for Bison's Yacc-like parsers in C],
1695 [1984, 1989, 1990, 2000, 2001, 2002, 2003, 2004, 2005,
1696 2006, 2007, 2008, 2009])
1697
1698 b4_percent_code_get([[requires]])[]dnl
1699
1700 b4_token_enums_defines(b4_tokens)
1701
1702 [#if ! defined YYSTYPE && ! defined YYSTYPE_IS_DECLARED
1703 ]m4_ifdef([b4_stype],
1704 [[typedef union ]b4_union_name[
1705 {
1706 ]b4_user_stype[
1707 } YYSTYPE;
1708 # define YYSTYPE_IS_TRIVIAL 1]],
1709 [m4_if(b4_tag_seen_flag, 0,
1710 [[typedef int YYSTYPE;
1711 # define YYSTYPE_IS_TRIVIAL 1]])])[
1712 # define yystype YYSTYPE /* obsolescent; will be withdrawn */
1713 # define YYSTYPE_IS_DECLARED 1
1714 #endif
1715
1716 ]b4_pure_if([], [[extern YYSTYPE ]b4_prefix[lval;]])
1717
1718 b4_locations_if(
1719 [#if ! defined YYLTYPE && ! defined YYLTYPE_IS_DECLARED
1720 typedef struct YYLTYPE
1721 {
1722 int first_line;
1723 int first_column;
1724 int last_line;
1725 int last_column;
1726 } YYLTYPE;
1727 # define yyltype YYLTYPE /* obsolescent; will be withdrawn */
1728 # define YYLTYPE_IS_DECLARED 1
1729 # define YYLTYPE_IS_TRIVIAL 1
1730 #endif
1731
1732 ]b4_pure_if([], [[extern YYLTYPE ]b4_prefix[lloc;]])
1733 )dnl b4_locations_if
1734 b4_push_if([[
1735 #ifndef YYPUSH_DECLS
1736 # define YYPUSH_DECLS
1737 struct ]b4_prefix[pstate;
1738 typedef struct ]b4_prefix[pstate ]b4_prefix[pstate;
1739 enum { YYPUSH_MORE = 4 };
1740 ]b4_pull_if([b4_c_function_decl([b4_prefix[parse]], [[int]], b4_parse_param)
1741 ])b4_c_function_decl([b4_prefix[push_parse]], [[int]],
1742 [[b4_prefix[pstate *yyps]], [[yyps]]]b4_pure_if([,
1743 [[[int yypushed_char]], [[yypushed_char]]],
1744 [[[YYSTYPE const *yypushed_val]], [[yypushed_val]]]b4_locations_if([,
1745 [[[YYLTYPE const *yypushed_loc]], [[yypushed_loc]]]])])m4_ifset([b4_parse_param], [,
1746 b4_parse_param]))
1747 b4_pull_if([b4_c_function_decl([b4_prefix[pull_parse]], [[int]],
1748 [[b4_prefix[pstate *yyps]], [[yyps]]]m4_ifset([b4_parse_param], [,
1749 b4_parse_param]))])
1750 b4_c_function_decl([b4_prefix[pstate_new]], [b4_prefix[pstate *]],
1751 [[[void]], []])
1752 b4_c_function_decl([b4_prefix[pstate_delete]], [[void]],
1753 [[b4_prefix[pstate *yyps]], [[yyps]]])[
1754 #endif
1755 ]])
1756 b4_percent_code_get([[provides]])[]dnl
1757 ])dnl b4_defines_if
1758 m4_divert_pop(0)
bison