]> git.saurik.com Git - bison.git/blob - data/yacc.c
projects / bison.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
blame | history | raw | HEAD
Do not use date ranges in copyright notices.
[bison.git] / data / yacc.c
1 -*- C -*-
2
3 # Yacc compatible skeleton for Bison
4
5 # Copyright (C) 1984, 1989, 1990, 2000, 2001, 2002, 2003, 2004, 2005,
6 # 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
7
8 # This program is free software: you can redistribute it and/or modify
9 # it under the terms of the GNU General Public License as published by
10 # the Free Software Foundation, either version 3 of the License, or
11 # (at your option) any later version.
12 #
13 # This program is distributed in the hope that it will be useful,
14 # but WITHOUT ANY WARRANTY; without even the implied warranty of
15 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 # GNU General Public License for more details.
17 #
18 # You should have received a copy of the GNU General Public License
19 # along with this program. If not, see <http://www.gnu.org/licenses/>.
20
21 # Check the value of %define api.push-pull.
22 b4_percent_define_default([[api.push-pull]], [[pull]])
23 b4_percent_define_check_values([[[[api.push-pull]],
24 [[pull]], [[push]], [[both]]]])
25 b4_define_flag_if([pull]) m4_define([b4_pull_flag], [[1]])
26 b4_define_flag_if([push]) m4_define([b4_push_flag], [[1]])
27 m4_case(b4_percent_define_get([[api.push-pull]]),
28 [pull], [m4_define([b4_push_flag], [[0]])],
29 [push], [m4_define([b4_pull_flag], [[0]])])
30
31 # Handle BISON_USE_PUSH_FOR_PULL for the test suite. So that push parsing
32 # tests function as written, don't let BISON_USE_PUSH_FOR_PULL modify Bison's
33 # behavior at all when push parsing is already requested.
34 b4_define_flag_if([use_push_for_pull])
35 b4_use_push_for_pull_if([
36 b4_push_if([m4_define([b4_use_push_for_pull_flag], [[0]])],
37 [m4_define([b4_push_flag], [[1]])])])
38
39 m4_include(b4_pkgdatadir/[c.m4])
40
41 ## ---------------- ##
42 ## Default values. ##
43 ## ---------------- ##
44
45 # Stack parameters.
46 m4_define_default([b4_stack_depth_max], [10000])
47 m4_define_default([b4_stack_depth_init], [200])
48
49
50 ## ------------------------ ##
51 ## Pure/impure interfaces. ##
52 ## ------------------------ ##
53
54 b4_percent_define_default([[api.pure]], [[false]])
55 b4_define_flag_if([pure])
56 m4_define([b4_pure_flag],
57 [b4_percent_define_flag_if([[api.pure]], [[1]], [[0]])])
58
59 # b4_yacc_pure_if(IF-TRUE, IF-FALSE)
60 # ----------------------------------
61 # Expand IF-TRUE, if %pure-parser and %parse-param, IF-FALSE otherwise.
62 m4_define([b4_yacc_pure_if],
63 [b4_pure_if([m4_ifset([b4_parse_param],
64 [$1], [$2])],
65 [$2])])
66
67
68 # b4_yyerror_args
69 # ---------------
70 # Arguments passed to yyerror: user args plus yylloc.
71 m4_define([b4_yyerror_args],
72 [b4_yacc_pure_if([b4_locations_if([&yylloc, ])])dnl
73 m4_ifset([b4_parse_param], [b4_c_args(b4_parse_param), ])])
74
75
76 # b4_lex_param
77 # ------------
78 # Accumulate in b4_lex_param all the yylex arguments.
79 # b4_lex_param arrives quoted twice, but we want to keep only one level.
80 m4_define([b4_lex_param],
81 m4_dquote(b4_pure_if([[[[YYSTYPE *]], [[&yylval]]][]dnl
82 b4_locations_if([, [[YYLTYPE *], [&yylloc]]])m4_ifdef([b4_lex_param], [, ])])dnl
83 m4_ifdef([b4_lex_param], b4_lex_param)))
84
85
86 ## ------------ ##
87 ## Data Types. ##
88 ## ------------ ##
89
90 # b4_int_type(MIN, MAX)
91 # ---------------------
92 # Return the smallest int type able to handle numbers ranging from
93 # MIN to MAX (included). Overwrite the version from c.m4, which
94 # uses only C89 types, so that the user can override the shorter
95 # types, and so that pre-C89 compilers are handled correctly.
96 m4_define([b4_int_type],
97 [m4_if(b4_ints_in($@, [0], [255]), [1], [yytype_uint8],
98 b4_ints_in($@, [-128], [127]), [1], [yytype_int8],
99
100 b4_ints_in($@, [0], [65535]), [1], [yytype_uint16],
101 b4_ints_in($@, [-32768], [32767]), [1], [yytype_int16],
102
103 m4_eval([0 <= $1]), [1], [unsigned int],
104
105 [int])])
106
107
108 ## ----------------- ##
109 ## Semantic Values. ##
110 ## ----------------- ##
111
112
113 # b4_lhs_value([TYPE])
114 # --------------------
115 # Expansion of $<TYPE>$.
116 m4_define([b4_lhs_value],
117 [(yyval[]m4_ifval([$1], [.$1]))])
118
119
120 # b4_rhs_value(RULE-LENGTH, NUM, [TYPE])
121 # --------------------------------------
122 # Expansion of $<TYPE>NUM, where the current rule has RULE-LENGTH
123 # symbols on RHS.
124 m4_define([b4_rhs_value],
125 [(yyvsp@{($2) - ($1)@}m4_ifval([$3], [.$3]))])
126
127
128
129 ## ----------- ##
130 ## Locations. ##
131 ## ----------- ##
132
133 # b4_lhs_location()
134 # -----------------
135 # Expansion of @$.
136 m4_define([b4_lhs_location],
137 [(yyloc)])
138
139
140 # b4_rhs_location(RULE-LENGTH, NUM)
141 # ---------------------------------
142 # Expansion of @NUM, where the current rule has RULE-LENGTH symbols
143 # on RHS.
144 m4_define([b4_rhs_location],
145 [(yylsp@{($2) - ($1)@})])
146
147
148 ## ------------------ ##
149 ## Parser variables. ##
150 ## ------------------ ##
151
152 # b4_declare_scanner_communication_variables
153 # ------------------------------------------
154 # Declare the variables that are global, or local to YYPARSE if
155 # pure-parser.
156 m4_define([b4_declare_scanner_communication_variables], [[
157 /* The lookahead symbol. */
158 int yychar;
159
160 /* The semantic value of the lookahead symbol. */
161 YYSTYPE yylval;]b4_locations_if([[
162
163 /* Location data for the lookahead symbol. */
164 YYLTYPE yylloc;]])b4_pure_if([], [[
165
166 /* Number of syntax errors so far. */
167 int yynerrs;]])])
168
169
170 # b4_declare_parser_state_variables
171 # ---------------------------------
172 # Declare all the variables that are needed to maintain the parser state
173 # between calls to yypush_parse.
174 m4_define([b4_declare_parser_state_variables], [b4_pure_if([[
175 /* Number of syntax errors so far. */
176 int yynerrs;
177 ]])[
178 int yystate;
179 /* Number of tokens to shift before error messages enabled. */
180 int yyerrstatus;
181
182 /* The stacks and their tools:
183 `yyss': related to states.
184 `yyvs': related to semantic values.]b4_locations_if([[
185 `yyls': related to locations.]])[
186
187 Refer to the stacks thru separate pointers, to allow yyoverflow
188 to reallocate them elsewhere. */
189
190 /* The state stack. */
191 yytype_int16 yyssa[YYINITDEPTH];
192 yytype_int16 *yyss;
193 yytype_int16 *yyssp;
194
195 /* The semantic value stack. */
196 YYSTYPE yyvsa[YYINITDEPTH];
197 YYSTYPE *yyvs;
198 YYSTYPE *yyvsp;]b4_locations_if([[
199
200 /* The location stack. */
201 YYLTYPE yylsa[YYINITDEPTH];
202 YYLTYPE *yyls;
203 YYLTYPE *yylsp;
204
205 /* The locations where the error started and ended. */
206 YYLTYPE yyerror_range[3];]])[
207
208 YYSIZE_T yystacksize;]])
209
210
211 ## --------------------------------------------------------- ##
212 ## Defining symbol actions, e.g., printers and destructors. ##
213 ## --------------------------------------------------------- ##
214
215 # We do want M4 expansion after # for CPP macros.
216 m4_changecom()
217 m4_divert_push(0)dnl
218 @output(b4_parser_file_name@)@
219 b4_copyright([Skeleton implementation for Bison's Yacc-like parsers in C],
220 [1984, 1989, 1990, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010])[
221
222 /* C LALR(1) parser skeleton written by Richard Stallman, by
223 simplifying the original so-called "semantic" parser. */
224
225 /* All symbols defined below should begin with yy or YY, to avoid
226 infringing on user name space. This should be done even for local
227 variables, as they might otherwise be expanded by user macros.
228 There are some unavoidable exceptions within include files to
229 define necessary library symbols; they are noted "INFRINGES ON
230 USER NAME SPACE" below. */
231
232 ]b4_identification
233 b4_percent_code_get([[top]])[]dnl
234 m4_if(b4_prefix, [yy], [],
235 [[/* Substitute the variable and function names. */]b4_pull_if([[
236 #define yyparse ]b4_prefix[parse]])b4_push_if([[
237 #define yypush_parse ]b4_prefix[push_parse]b4_pull_if([[
238 #define yypull_parse ]b4_prefix[pull_parse]])[
239 #define yypstate_new ]b4_prefix[pstate_new
240 #define yypstate_delete ]b4_prefix[pstate_delete
241 #define yypstate ]b4_prefix[pstate]])[
242 #define yylex ]b4_prefix[lex
243 #define yyerror ]b4_prefix[error
244 #define yylval ]b4_prefix[lval
245 #define yychar ]b4_prefix[char
246 #define yydebug ]b4_prefix[debug
247 #define yynerrs ]b4_prefix[nerrs
248 ]b4_locations_if([[#define yylloc ]b4_prefix[lloc]])])[
249
250 /* Copy the first part of user declarations. */
251 ]b4_user_pre_prologue[
252
253 /* Enabling traces. */
254 #ifndef YYDEBUG
255 # define YYDEBUG ]b4_debug_flag[
256 #endif
257
258 /* Enabling verbose error messages. */
259 #ifdef YYERROR_VERBOSE
260 # undef YYERROR_VERBOSE
261 # define YYERROR_VERBOSE 1
262 #else
263 # define YYERROR_VERBOSE ]b4_error_verbose_flag[
264 #endif
265
266 /* Enabling the token table. */
267 #ifndef YYTOKEN_TABLE
268 # define YYTOKEN_TABLE ]b4_token_table[
269 #endif
270
271 ]b4_percent_code_get([[requires]])[]dnl
272
273 b4_token_enums_defines(b4_tokens)[
274
275 #if ! defined YYSTYPE && ! defined YYSTYPE_IS_DECLARED
276 ]m4_ifdef([b4_stype],
277 [[typedef union ]b4_union_name[
278 {
279 ]b4_user_stype[
280 } YYSTYPE;
281 # define YYSTYPE_IS_TRIVIAL 1]],
282 [m4_if(b4_tag_seen_flag, 0,
283 [[typedef int YYSTYPE;
284 # define YYSTYPE_IS_TRIVIAL 1]])])[
285 # define yystype YYSTYPE /* obsolescent; will be withdrawn */
286 # define YYSTYPE_IS_DECLARED 1
287 #endif]b4_locations_if([[
288
289 #if ! defined YYLTYPE && ! defined YYLTYPE_IS_DECLARED
290 typedef struct YYLTYPE
291 {
292 int first_line;
293 int first_column;
294 int last_line;
295 int last_column;
296 } YYLTYPE;
297 # define yyltype YYLTYPE /* obsolescent; will be withdrawn */
298 # define YYLTYPE_IS_DECLARED 1
299 # define YYLTYPE_IS_TRIVIAL 1
300 #endif]])b4_push_if([[
301
302 #ifndef YYPUSH_DECLS
303 # define YYPUSH_DECLS
304 struct yypstate;
305 typedef struct yypstate yypstate;
306 enum { YYPUSH_MORE = 4 };
307
308 ]b4_pull_if([b4_c_function_decl([[yyparse]], [[int]], b4_parse_param)
309 ])b4_c_function_decl([[yypush_parse]], [[int]],
310 [[[yypstate *yyps]], [[yyps]]]b4_pure_if([,
311 [[[int yypushed_char]], [[yypushed_char]]],
312 [[[YYSTYPE const *yypushed_val]], [[yypushed_val]]]b4_locations_if([,
313 [[[YYLTYPE const *yypushed_loc]], [[yypushed_loc]]]])])m4_ifset([b4_parse_param], [,
314 b4_parse_param]))
315 b4_pull_if([b4_c_function_decl([[yypull_parse]], [[int]],
316 [[[yypstate *yyps]], [[yyps]]]m4_ifset([b4_parse_param], [,
317 b4_parse_param]))])
318 b4_c_function_decl([[yypstate_new]], [[yypstate *]], [[[void]], []])
319 b4_c_function_decl([[yypstate_delete]], [[void]],
320 [[[yypstate *yyps]], [[yyps]]])[
321 #endif]])
322
323 b4_percent_code_get([[provides]])[]dnl
324
325 [/* Copy the second part of user declarations. */
326 ]b4_user_post_prologue
327 b4_percent_code_get[]dnl
328
329 [#ifdef short
330 # undef short
331 #endif
332
333 #ifdef YYTYPE_UINT8
334 typedef YYTYPE_UINT8 yytype_uint8;
335 #else
336 typedef unsigned char yytype_uint8;
337 #endif
338
339 #ifdef YYTYPE_INT8
340 typedef YYTYPE_INT8 yytype_int8;
341 #elif ]b4_c_modern[
342 typedef signed char yytype_int8;
343 #else
344 typedef short int yytype_int8;
345 #endif
346
347 #ifdef YYTYPE_UINT16
348 typedef YYTYPE_UINT16 yytype_uint16;
349 #else
350 typedef unsigned short int yytype_uint16;
351 #endif
352
353 #ifdef YYTYPE_INT16
354 typedef YYTYPE_INT16 yytype_int16;
355 #else
356 typedef short int yytype_int16;
357 #endif
358
359 #ifndef YYSIZE_T
360 # ifdef __SIZE_TYPE__
361 # define YYSIZE_T __SIZE_TYPE__
362 # elif defined size_t
363 # define YYSIZE_T size_t
364 # elif ! defined YYSIZE_T && ]b4_c_modern[
365 # include <stddef.h> /* INFRINGES ON USER NAME SPACE */
366 # define YYSIZE_T size_t
367 # else
368 # define YYSIZE_T unsigned int
369 # endif
370 #endif
371
372 #define YYSIZE_MAXIMUM ((YYSIZE_T) -1)
373
374 #ifndef YY_
375 # if defined YYENABLE_NLS && YYENABLE_NLS
376 # if ENABLE_NLS
377 # include <libintl.h> /* INFRINGES ON USER NAME SPACE */
378 # define YY_(msgid) dgettext ("bison-runtime", msgid)
379 # endif
380 # endif
381 # ifndef YY_
382 # define YY_(msgid) msgid
383 # endif
384 #endif
385
386 /* Suppress unused-variable warnings by "using" E. */
387 #if ! defined lint || defined __GNUC__
388 # define YYUSE(e) ((void) (e))
389 #else
390 # define YYUSE(e) /* empty */
391 #endif
392
393 /* Identity function, used to suppress warnings about constant conditions. */
394 #ifndef lint
395 # define YYID(n) (n)
396 #else
397 ]b4_c_function_def([YYID], [static int], [[int yyi], [yyi]])[
398 {
399 return yyi;
400 }
401 #endif
402
403 #if ! defined yyoverflow || YYERROR_VERBOSE
404
405 ]b4_push_if([],
406 [[/* The parser invokes alloca or malloc; define the necessary symbols. */
407
408 # ifdef YYSTACK_USE_ALLOCA
409 # if YYSTACK_USE_ALLOCA
410 # ifdef __GNUC__
411 # define YYSTACK_ALLOC __builtin_alloca
412 # elif defined __BUILTIN_VA_ARG_INCR
413 # include <alloca.h> /* INFRINGES ON USER NAME SPACE */
414 # elif defined _AIX
415 # define YYSTACK_ALLOC __alloca
416 # elif defined _MSC_VER
417 # include <malloc.h> /* INFRINGES ON USER NAME SPACE */
418 # define alloca _alloca
419 # else
420 # define YYSTACK_ALLOC alloca
421 # if ! defined _ALLOCA_H && ! defined _STDLIB_H && ]b4_c_modern[
422 # include <stdlib.h> /* INFRINGES ON USER NAME SPACE */
423 # ifndef _STDLIB_H
424 # define _STDLIB_H 1
425 # endif
426 # endif
427 # endif
428 # endif
429 # endif
430
431 ]])dnl
432 [# ifdef YYSTACK_ALLOC
433 /* Pacify GCC's `empty if-body' warning. */
434 # define YYSTACK_FREE(Ptr) do { /* empty */; } while (YYID (0))
435 # ifndef YYSTACK_ALLOC_MAXIMUM
436 /* The OS might guarantee only one guard page at the bottom of the stack,
437 and a page size can be as small as 4096 bytes. So we cannot safely
438 invoke alloca (N) if N exceeds 4096. Use a slightly smaller number
439 to allow for a few compiler-allocated temporary stack slots. */
440 # define YYSTACK_ALLOC_MAXIMUM 4032 /* reasonable circa 2006 */
441 # endif
442 # else
443 # define YYSTACK_ALLOC YYMALLOC
444 # define YYSTACK_FREE YYFREE
445 # ifndef YYSTACK_ALLOC_MAXIMUM
446 # define YYSTACK_ALLOC_MAXIMUM YYSIZE_MAXIMUM
447 # endif
448 # if (defined __cplusplus && ! defined _STDLIB_H \
449 && ! ((defined YYMALLOC || defined malloc) \
450 && (defined YYFREE || defined free)))
451 # include <stdlib.h> /* INFRINGES ON USER NAME SPACE */
452 # ifndef _STDLIB_H
453 # define _STDLIB_H 1
454 # endif
455 # endif
456 # ifndef YYMALLOC
457 # define YYMALLOC malloc
458 # if ! defined malloc && ! defined _STDLIB_H && ]b4_c_modern[
459 void *malloc (YYSIZE_T); /* INFRINGES ON USER NAME SPACE */
460 # endif
461 # endif
462 # ifndef YYFREE
463 # define YYFREE free
464 # if ! defined free && ! defined _STDLIB_H && ]b4_c_modern[
465 void free (void *); /* INFRINGES ON USER NAME SPACE */
466 # endif
467 # endif
468 # endif
469 #endif /* ! defined yyoverflow || YYERROR_VERBOSE */
470
471
472 #if (! defined yyoverflow \
473 && (! defined __cplusplus \
474 || (]b4_locations_if([[defined YYLTYPE_IS_TRIVIAL && YYLTYPE_IS_TRIVIAL \
475 && ]])[defined YYSTYPE_IS_TRIVIAL && YYSTYPE_IS_TRIVIAL)))
476
477 /* A type that is properly aligned for any stack member. */
478 union yyalloc
479 {
480 yytype_int16 yyss_alloc;
481 YYSTYPE yyvs_alloc;]b4_locations_if([
482 YYLTYPE yyls_alloc;])[
483 };
484
485 /* The size of the maximum gap between one aligned stack and the next. */
486 # define YYSTACK_GAP_MAXIMUM (sizeof (union yyalloc) - 1)
487
488 /* The size of an array large to enough to hold all stacks, each with
489 N elements. */
490 ]b4_locations_if(
491 [# define YYSTACK_BYTES(N) \
492 ((N) * (sizeof (yytype_int16) + sizeof (YYSTYPE) + sizeof (YYLTYPE)) \
493 + 2 * YYSTACK_GAP_MAXIMUM)],
494 [# define YYSTACK_BYTES(N) \
495 ((N) * (sizeof (yytype_int16) + sizeof (YYSTYPE)) \
496 + YYSTACK_GAP_MAXIMUM)])[
497
498 /* Copy COUNT objects from FROM to TO. The source and destination do
499 not overlap. */
500 # ifndef YYCOPY
501 # if defined __GNUC__ && 1 < __GNUC__
502 # define YYCOPY(To, From, Count) \
503 __builtin_memcpy (To, From, (Count) * sizeof (*(From)))
504 # else
505 # define YYCOPY(To, From, Count) \
506 do \
507 { \
508 YYSIZE_T yyi; \
509 for (yyi = 0; yyi < (Count); yyi++) \
510 (To)[yyi] = (From)[yyi]; \
511 } \
512 while (YYID (0))
513 # endif
514 # endif
515
516 /* Relocate STACK from its old location to the new one. The
517 local variables YYSIZE and YYSTACKSIZE give the old and new number of
518 elements in the stack, and YYPTR gives the new location of the
519 stack. Advance YYPTR to a properly aligned location for the next
520 stack. */
521 # define YYSTACK_RELOCATE(Stack_alloc, Stack) \
522 do \
523 { \
524 YYSIZE_T yynewbytes; \
525 YYCOPY (&yyptr->Stack_alloc, Stack, yysize); \
526 Stack = &yyptr->Stack_alloc; \
527 yynewbytes = yystacksize * sizeof (*Stack) + YYSTACK_GAP_MAXIMUM; \
528 yyptr += yynewbytes / sizeof (*yyptr); \
529 } \
530 while (YYID (0))
531
532 #endif
533
534 /* YYFINAL -- State number of the termination state. */
535 #define YYFINAL ]b4_final_state_number[
536 /* YYLAST -- Last index in YYTABLE. */
537 #define YYLAST ]b4_last[
538
539 /* YYNTOKENS -- Number of terminals. */
540 #define YYNTOKENS ]b4_tokens_number[
541 /* YYNNTS -- Number of nonterminals. */
542 #define YYNNTS ]b4_nterms_number[
543 /* YYNRULES -- Number of rules. */
544 #define YYNRULES ]b4_rules_number[
545 /* YYNRULES -- Number of states. */
546 #define YYNSTATES ]b4_states_number[
547
548 /* YYTRANSLATE(YYLEX) -- Bison symbol number corresponding to YYLEX. */
549 #define YYUNDEFTOK ]b4_undef_token_number[
550 #define YYMAXUTOK ]b4_user_token_number_max[
551
552 #define YYTRANSLATE(YYX) \
553 ((unsigned int) (YYX) <= YYMAXUTOK ? yytranslate[YYX] : YYUNDEFTOK)
554
555 /* YYTRANSLATE[YYLEX] -- Bison symbol number corresponding to YYLEX. */
556 static const ]b4_int_type_for([b4_translate])[ yytranslate[] =
557 {
558 ]b4_translate[
559 };
560
561 #if YYDEBUG
562 /* YYPRHS[YYN] -- Index of the first RHS symbol of rule number YYN in
563 YYRHS. */
564 static const ]b4_int_type_for([b4_prhs])[ yyprhs[] =
565 {
566 ]b4_prhs[
567 };
568
569 /* YYRHS -- A `-1'-separated list of the rules' RHS. */
570 static const ]b4_int_type_for([b4_rhs])[ yyrhs[] =
571 {
572 ]b4_rhs[
573 };
574
575 /* YYRLINE[YYN] -- source line where rule number YYN was defined. */
576 static const ]b4_int_type_for([b4_rline])[ yyrline[] =
577 {
578 ]b4_rline[
579 };
580 #endif
581
582 #if YYDEBUG || YYERROR_VERBOSE || YYTOKEN_TABLE
583 /* YYTNAME[SYMBOL-NUM] -- String name of the symbol SYMBOL-NUM.
584 First, the terminals, then, starting at YYNTOKENS, nonterminals. */
585 static const char *const yytname[] =
586 {
587 ]b4_tname[
588 };
589 #endif
590
591 # ifdef YYPRINT
592 /* YYTOKNUM[YYLEX-NUM] -- Internal token number corresponding to
593 token YYLEX-NUM. */
594 static const ]b4_int_type_for([b4_toknum])[ yytoknum[] =
595 {
596 ]b4_toknum[
597 };
598 # endif
599
600 /* YYR1[YYN] -- Symbol number of symbol that rule YYN derives. */
601 static const ]b4_int_type_for([b4_r1])[ yyr1[] =
602 {
603 ]b4_r1[
604 };
605
606 /* YYR2[YYN] -- Number of symbols composing right hand side of rule YYN. */
607 static const ]b4_int_type_for([b4_r2])[ yyr2[] =
608 {
609 ]b4_r2[
610 };
611
612 /* YYDEFACT[STATE-NAME] -- Default reduction number in state STATE-NUM.
613 Performed when YYTABLE doesn't specify something else to do. Zero
614 means the default is an error. */
615 static const ]b4_int_type_for([b4_defact])[ yydefact[] =
616 {
617 ]b4_defact[
618 };
619
620 /* YYDEFGOTO[NTERM-NUM]. */
621 static const ]b4_int_type_for([b4_defgoto])[ yydefgoto[] =
622 {
623 ]b4_defgoto[
624 };
625
626 /* YYPACT[STATE-NUM] -- Index in YYTABLE of the portion describing
627 STATE-NUM. */
628 #define YYPACT_NINF ]b4_pact_ninf[
629 static const ]b4_int_type_for([b4_pact])[ yypact[] =
630 {
631 ]b4_pact[
632 };
633
634 /* YYPGOTO[NTERM-NUM]. */
635 static const ]b4_int_type_for([b4_pgoto])[ yypgoto[] =
636 {
637 ]b4_pgoto[
638 };
639
640 /* YYTABLE[YYPACT[STATE-NUM]]. What to do in state STATE-NUM. If
641 positive, shift that token. If negative, reduce the rule which
642 number is the opposite. If YYTABLE_NINF, syntax error. */
643 #define YYTABLE_NINF ]b4_table_ninf[
644 static const ]b4_int_type_for([b4_table])[ yytable[] =
645 {
646 ]b4_table[
647 };
648
649 #define yypact_value_is_default(yystate) \
650 ]b4_table_value_equals([[pact]], [[yystate]], [b4_pact_ninf])[
651
652 #define yytable_value_is_error(yytable_value) \
653 ]b4_table_value_equals([[table]], [[yytable_value]], [b4_table_ninf])[
654
655 static const ]b4_int_type_for([b4_check])[ yycheck[] =
656 {
657 ]b4_check[
658 };
659
660 /* YYSTOS[STATE-NUM] -- The (internal number of the) accessing
661 symbol of state STATE-NUM. */
662 static const ]b4_int_type_for([b4_stos])[ yystos[] =
663 {
664 ]b4_stos[
665 };
666
667 #define yyerrok (yyerrstatus = 0)
668 #define yyclearin (yychar = YYEMPTY)
669 #define YYEMPTY (-2)
670 #define YYEOF 0
671
672 #define YYACCEPT goto yyacceptlab
673 #define YYABORT goto yyabortlab
674 #define YYERROR goto yyerrorlab
675
676
677 /* Like YYERROR except do call yyerror. This remains here temporarily
678 to ease the transition to the new meaning of YYERROR, for GCC.
679 Once GCC version 2 has supplanted version 1, this can go. However,
680 YYFAIL appears to be in use. Nevertheless, it is formally deprecated
681 in Bison 2.4.2's NEWS entry, where a plan to phase it out is
682 discussed. */
683
684 #define YYFAIL goto yyerrlab
685 #if defined YYFAIL
686 /* This is here to suppress warnings from the GCC cpp's
687 -Wunused-macros. Normally we don't worry about that warning, but
688 some users do, and we want to make it easy for users to remove
689 YYFAIL uses, which will produce warnings from Bison 2.5. */
690 #endif
691
692 #define YYRECOVERING() (!!yyerrstatus)
693
694 #define YYBACKUP(Token, Value) \
695 do \
696 if (yychar == YYEMPTY && yylen == 1) \
697 { \
698 yychar = (Token); \
699 yylval = (Value); \
700 YYPOPSTACK (1); \
701 goto yybackup; \
702 } \
703 else \
704 { \
705 yyerror (]b4_yyerror_args[YY_("syntax error: cannot back up")); \
706 YYERROR; \
707 } \
708 while (YYID (0))
709
710
711 #define YYTERROR 1
712 #define YYERRCODE 256
713
714
715 /* YYLLOC_DEFAULT -- Set CURRENT to span from RHS[1] to RHS[N].
716 If N is 0, then set CURRENT to the empty location which ends
717 the previous symbol: RHS[0] (always defined). */
718
719 #define YYRHSLOC(Rhs, K) ((Rhs)[K])
720 #ifndef YYLLOC_DEFAULT
721 # define YYLLOC_DEFAULT(Current, Rhs, N) \
722 do \
723 if (YYID (N)) \
724 { \
725 (Current).first_line = YYRHSLOC (Rhs, 1).first_line; \
726 (Current).first_column = YYRHSLOC (Rhs, 1).first_column; \
727 (Current).last_line = YYRHSLOC (Rhs, N).last_line; \
728 (Current).last_column = YYRHSLOC (Rhs, N).last_column; \
729 } \
730 else \
731 { \
732 (Current).first_line = (Current).last_line = \
733 YYRHSLOC (Rhs, 0).last_line; \
734 (Current).first_column = (Current).last_column = \
735 YYRHSLOC (Rhs, 0).last_column; \
736 } \
737 while (YYID (0))
738 #endif]b4_locations_if([[
739
740
741 /* YY_LOCATION_PRINT -- Print the location on the stream.
742 This macro was not mandated originally: define only if we know
743 we won't break user code: when these are the locations we know. */
744
745 #ifndef YY_LOCATION_PRINT
746 # if defined YYLTYPE_IS_TRIVIAL && YYLTYPE_IS_TRIVIAL
747 # define YY_LOCATION_PRINT(File, Loc) \
748 fprintf (File, "%d.%d-%d.%d", \
749 (Loc).first_line, (Loc).first_column, \
750 (Loc).last_line, (Loc).last_column)
751 # else
752 # define YY_LOCATION_PRINT(File, Loc) ((void) 0)
753 # endif
754 #endif]], [[
755
756
757 /* This macro is provided for backward compatibility. */
758
759 #ifndef YY_LOCATION_PRINT
760 # define YY_LOCATION_PRINT(File, Loc) ((void) 0)
761 #endif]])[
762
763
764 /* YYLEX -- calling `yylex' with the right arguments. */
765
766 #ifdef YYLEX_PARAM
767 # define YYLEX yylex (]b4_pure_if([&yylval[]b4_locations_if([, &yylloc]), ])[YYLEX_PARAM)
768 #else
769 # define YYLEX ]b4_c_function_call([yylex], [int], b4_lex_param)[
770 #endif
771
772 /* Enable debugging if requested. */
773 #if YYDEBUG
774
775 # ifndef YYFPRINTF
776 # include <stdio.h> /* INFRINGES ON USER NAME SPACE */
777 # define YYFPRINTF fprintf
778 # endif
779
780 # define YYDPRINTF(Args) \
781 do { \
782 if (yydebug) \
783 YYFPRINTF Args; \
784 } while (YYID (0))
785
786 # define YY_SYMBOL_PRINT(Title, Type, Value, Location) \
787 do { \
788 if (yydebug) \
789 { \
790 YYFPRINTF (stderr, "%s ", Title); \
791 yy_symbol_print (stderr, \
792 Type, Value]b4_locations_if([, Location])[]b4_user_args[); \
793 YYFPRINTF (stderr, "\n"); \
794 } \
795 } while (YYID (0))
796
797 ]b4_yy_symbol_print_generate([b4_c_function_def])[
798
799 /*------------------------------------------------------------------.
800 | yy_stack_print -- Print the state stack from its BOTTOM up to its |
801 | TOP (included). |
802 `------------------------------------------------------------------*/
803
804 ]b4_c_function_def([yy_stack_print], [static void],
805 [[yytype_int16 *yybottom], [yybottom]],
806 [[yytype_int16 *yytop], [yytop]])[
807 {
808 YYFPRINTF (stderr, "Stack now");
809 for (; yybottom <= yytop; yybottom++)
810 {
811 int yybot = *yybottom;
812 YYFPRINTF (stderr, " %d", yybot);
813 }
814 YYFPRINTF (stderr, "\n");
815 }
816
817 # define YY_STACK_PRINT(Bottom, Top) \
818 do { \
819 if (yydebug) \
820 yy_stack_print ((Bottom), (Top)); \
821 } while (YYID (0))
822
823
824 /*------------------------------------------------.
825 | Report that the YYRULE is going to be reduced. |
826 `------------------------------------------------*/
827
828 ]b4_c_function_def([yy_reduce_print], [static void],
829 [[YYSTYPE *yyvsp], [yyvsp]],
830 b4_locations_if([[[YYLTYPE *yylsp], [yylsp]],
831 ])[[int yyrule], [yyrule]]m4_ifset([b4_parse_param], [,
832 b4_parse_param]))[
833 {
834 int yynrhs = yyr2[yyrule];
835 int yyi;
836 unsigned long int yylno = yyrline[yyrule];
837 YYFPRINTF (stderr, "Reducing stack by rule %d (line %lu):\n",
838 yyrule - 1, yylno);
839 /* The symbols being reduced. */
840 for (yyi = 0; yyi < yynrhs; yyi++)
841 {
842 YYFPRINTF (stderr, " $%d = ", yyi + 1);
843 yy_symbol_print (stderr, yyrhs[yyprhs[yyrule] + yyi],
844 &]b4_rhs_value(yynrhs, yyi + 1)[
845 ]b4_locations_if([, &]b4_rhs_location(yynrhs, yyi + 1))[]dnl
846 b4_user_args[);
847 YYFPRINTF (stderr, "\n");
848 }
849 }
850
851 # define YY_REDUCE_PRINT(Rule) \
852 do { \
853 if (yydebug) \
854 yy_reduce_print (yyvsp, ]b4_locations_if([yylsp, ])[Rule]b4_user_args[); \
855 } while (YYID (0))
856
857 /* Nonzero means print parse trace. It is left uninitialized so that
858 multiple parsers can coexist. */
859 int yydebug;
860 #else /* !YYDEBUG */
861 # define YYDPRINTF(Args)
862 # define YY_SYMBOL_PRINT(Title, Type, Value, Location)
863 # define YY_STACK_PRINT(Bottom, Top)
864 # define YY_REDUCE_PRINT(Rule)
865 #endif /* !YYDEBUG */
866
867
868 /* YYINITDEPTH -- initial size of the parser's stacks. */
869 #ifndef YYINITDEPTH
870 # define YYINITDEPTH ]b4_stack_depth_init[
871 #endif
872
873 /* YYMAXDEPTH -- maximum size the stacks can grow to (effective only
874 if the built-in stack extension method is used).
875
876 Do not make this value too large; the results are undefined if
877 YYSTACK_ALLOC_MAXIMUM < YYSTACK_BYTES (YYMAXDEPTH)
878 evaluated with infinite-precision integer arithmetic. */
879
880 #ifndef YYMAXDEPTH
881 # define YYMAXDEPTH ]b4_stack_depth_max[
882 #endif
883
884 \f
885
886 #if YYERROR_VERBOSE
887
888 # ifndef yystrlen
889 # if defined __GLIBC__ && defined _STRING_H
890 # define yystrlen strlen
891 # else
892 /* Return the length of YYSTR. */
893 ]b4_c_function_def([yystrlen], [static YYSIZE_T],
894 [[const char *yystr], [yystr]])[
895 {
896 YYSIZE_T yylen;
897 for (yylen = 0; yystr[yylen]; yylen++)
898 continue;
899 return yylen;
900 }
901 # endif
902 # endif
903
904 # ifndef yystpcpy
905 # if defined __GLIBC__ && defined _STRING_H && defined _GNU_SOURCE
906 # define yystpcpy stpcpy
907 # else
908 /* Copy YYSRC to YYDEST, returning the address of the terminating '\0' in
909 YYDEST. */
910 ]b4_c_function_def([yystpcpy], [static char *],
911 [[char *yydest], [yydest]], [[const char *yysrc], [yysrc]])[
912 {
913 char *yyd = yydest;
914 const char *yys = yysrc;
915
916 while ((*yyd++ = *yys++) != '\0')
917 continue;
918
919 return yyd - 1;
920 }
921 # endif
922 # endif
923
924 # ifndef yytnamerr
925 /* Copy to YYRES the contents of YYSTR after stripping away unnecessary
926 quotes and backslashes, so that it's suitable for yyerror. The
927 heuristic is that double-quoting is unnecessary unless the string
928 contains an apostrophe, a comma, or backslash (other than
929 backslash-backslash). YYSTR is taken from yytname. If YYRES is
930 null, do not copy; instead, return the length of what the result
931 would have been. */
932 static YYSIZE_T
933 yytnamerr (char *yyres, const char *yystr)
934 {
935 if (*yystr == '"')
936 {
937 YYSIZE_T yyn = 0;
938 char const *yyp = yystr;
939
940 for (;;)
941 switch (*++yyp)
942 {
943 case '\'':
944 case ',':
945 goto do_not_strip_quotes;
946
947 case '\\':
948 if (*++yyp != '\\')
949 goto do_not_strip_quotes;
950 /* Fall through. */
951 default:
952 if (yyres)
953 yyres[yyn] = *yyp;
954 yyn++;
955 break;
956
957 case '"':
958 if (yyres)
959 yyres[yyn] = '\0';
960 return yyn;
961 }
962 do_not_strip_quotes: ;
963 }
964
965 if (! yyres)
966 return yystrlen (yystr);
967
968 return yystpcpy (yyres, yystr) - yyres;
969 }
970 # endif
971
972 /* Copy into *YYMSG, which is of size *YYMSG_ALLOC, an error message
973 about the unexpected token YYTOKEN while in state YYSTATE.
974
975 Return 0 if *YYMSG was successfully written. Return 1 if an ordinary
976 "syntax error" message will suffice instead. Return 2 if *YYMSG is
977 not large enough to hold the message. In the last case, also set
978 *YYMSG_ALLOC to either (a) the required number of bytes or (b) zero
979 if the required number of bytes is too large to store. */
980 static int
981 yysyntax_error (YYSIZE_T *yymsg_alloc, char **yymsg,
982 int yystate, int yytoken)
983 {
984 int yyn = yypact[yystate];
985
986 if (! (YYPACT_NINF < yyn && yyn <= YYLAST))
987 return 1;
988 else
989 {
990 YYSIZE_T yysize0 = yytnamerr (0, yytname[yytoken]);
991 YYSIZE_T yysize = yysize0;
992 YYSIZE_T yysize1;
993 enum { YYERROR_VERBOSE_ARGS_MAXIMUM = 5 };
994 /* Internationalized format string. */
995 const char *yyformat = 0;
996 /* Arguments of yyformat. */
997 char const *yyarg[YYERROR_VERBOSE_ARGS_MAXIMUM];
998
999 /* Start YYX at -YYN if negative to avoid negative indexes in
1000 YYCHECK. In other words, skip the first -YYN actions for this
1001 state because they are default actions. */
1002 int yyxbegin = yyn < 0 ? -yyn : 0;
1003
1004 /* Stay within bounds of both yycheck and yytname. */
1005 int yychecklim = YYLAST - yyn + 1;
1006 int yyxend = yychecklim < YYNTOKENS ? yychecklim : YYNTOKENS;
1007 /* Number of reported tokens (one for the "unexpected", one per
1008 "expected"). */
1009 int yycount = 0;
1010 int yyx;
1011
1012 yyarg[yycount++] = yytname[yytoken];
1013
1014 for (yyx = yyxbegin; yyx < yyxend; ++yyx)
1015 if (yycheck[yyx + yyn] == yyx && yyx != YYTERROR
1016 && !yytable_value_is_error (yytable[yyx + yyn]))
1017 {
1018 if (yycount == YYERROR_VERBOSE_ARGS_MAXIMUM)
1019 {
1020 yycount = 1;
1021 yysize = yysize0;
1022 break;
1023 }
1024 yyarg[yycount++] = yytname[yyx];
1025 yysize1 = yysize + yytnamerr (0, yytname[yyx]);
1026 if (! (yysize <= yysize1
1027 && yysize1 <= YYSTACK_ALLOC_MAXIMUM))
1028 {
1029 /* Overflow. */
1030 *yymsg_alloc = 0;
1031 return 2;
1032 }
1033 yysize = yysize1;
1034 }
1035
1036 switch (yycount)
1037 {
1038 #define YYCASE_(N, S) \
1039 case N: \
1040 yyformat = S; \
1041 break
1042 YYCASE_(1, YY_("syntax error, unexpected %s"));
1043 YYCASE_(2, YY_("syntax error, unexpected %s, expecting %s"));
1044 YYCASE_(3, YY_("syntax error, unexpected %s, expecting %s or %s"));
1045 YYCASE_(4, YY_("syntax error, unexpected %s, expecting %s or %s or %s"));
1046 YYCASE_(5, YY_("syntax error, unexpected %s, expecting %s or %s or %s or %s"));
1047 #undef YYCASE_
1048 }
1049
1050 yysize1 = yysize + yystrlen (yyformat);
1051 if (! (yysize <= yysize1 && yysize1 <= YYSTACK_ALLOC_MAXIMUM))
1052 {
1053 /* Overflow. */
1054 *yymsg_alloc = 0;
1055 return 2;
1056 }
1057 yysize = yysize1;
1058
1059 if (*yymsg_alloc < yysize)
1060 {
1061 *yymsg_alloc = 2 * yysize;
1062 if (! (yysize <= *yymsg_alloc
1063 && *yymsg_alloc <= YYSTACK_ALLOC_MAXIMUM))
1064 *yymsg_alloc = YYSTACK_ALLOC_MAXIMUM;
1065 return 2;
1066 }
1067
1068 /* Avoid sprintf, as that infringes on the user's name space.
1069 Don't have undefined behavior even if the translation
1070 produced a string with the wrong number of "%s"s. */
1071 {
1072 char *yyp = *yymsg;
1073 int yyi = 0;
1074 while ((*yyp = *yyformat) != '\0')
1075 if (*yyp == '%' && yyformat[1] == 's' && yyi < yycount)
1076 {
1077 yyp += yytnamerr (yyp, yyarg[yyi++]);
1078 yyformat += 2;
1079 }
1080 else
1081 {
1082 yyp++;
1083 yyformat++;
1084 }
1085 }
1086 return 0;
1087 }
1088 }
1089 #endif /* YYERROR_VERBOSE */
1090 \f
1091
1092 ]b4_yydestruct_generate([b4_c_function_def])b4_push_if([], [[
1093
1094
1095 /* Prevent warnings from -Wmissing-prototypes. */
1096 #ifdef YYPARSE_PARAM
1097 ]b4_c_function_decl([yyparse], [int],
1098 [[void *YYPARSE_PARAM], [YYPARSE_PARAM]])[
1099 #else /* ! YYPARSE_PARAM */
1100 ]b4_c_function_decl([yyparse], [int], b4_parse_param)[
1101 #endif /* ! YYPARSE_PARAM */]])b4_pure_if([], [
1102
1103 b4_declare_scanner_communication_variables])[]b4_push_if([[
1104
1105
1106 struct yypstate
1107 {]b4_declare_parser_state_variables[
1108 /* Used to determine if this is the first time this instance has
1109 been used. */
1110 int yynew;
1111 };]b4_pure_if([], [[
1112
1113 static char yypstate_allocated = 0;]])b4_pull_if([
1114
1115 b4_c_function_def([[yyparse]], [[int]], b4_parse_param)[
1116 {
1117 return yypull_parse (0]m4_ifset([b4_parse_param],
1118 [[, ]b4_c_args(b4_parse_param)])[);
1119 }
1120
1121 ]b4_c_function_def([[yypull_parse]], [[int]],
1122 [[[yypstate *yyps]], [[yyps]]]m4_ifset([b4_parse_param], [,
1123 b4_parse_param]))[
1124 {
1125 int yystatus;
1126 yypstate *yyps_local;]b4_pure_if([[
1127 int yychar;
1128 YYSTYPE yylval;]b4_locations_if([[
1129 YYLTYPE yylloc;]])])[
1130 if (yyps == 0)
1131 {
1132 yyps_local = yypstate_new ();
1133 if (!yyps_local)
1134 {]b4_pure_if([[
1135 yyerror (]b4_yyerror_args[YY_("memory exhausted"));]], [[
1136 if (!yypstate_allocated)
1137 yyerror (]b4_yyerror_args[YY_("memory exhausted"));]])[
1138 return 2;
1139 }
1140 }
1141 else
1142 yyps_local = yyps;
1143 do {
1144 yychar = YYLEX;
1145 yystatus =
1146 yypush_parse (yyps_local]b4_pure_if([[, yychar, &yylval]b4_locations_if([[, &yylloc]])])m4_ifset([b4_parse_param], [, b4_c_args(b4_parse_param)])[);
1147 } while (yystatus == YYPUSH_MORE);
1148 if (yyps == 0)
1149 yypstate_delete (yyps_local);
1150 return yystatus;
1151 }]])[
1152
1153 /* Initialize the parser data structure. */
1154 ]b4_c_function_def([[yypstate_new]], [[yypstate *]])[
1155 {
1156 yypstate *yyps;]b4_pure_if([], [[
1157 if (yypstate_allocated)
1158 return 0;]])[
1159 yyps = (yypstate *) malloc (sizeof *yyps);
1160 if (!yyps)
1161 return 0;
1162 yyps->yynew = 1;]b4_pure_if([], [[
1163 yypstate_allocated = 1;]])[
1164 return yyps;
1165 }
1166
1167 ]b4_c_function_def([[yypstate_delete]], [[void]],
1168 [[[yypstate *yyps]], [[yyps]]])[
1169 {
1170 #ifndef yyoverflow
1171 /* If the stack was reallocated but the parse did not complete, then the
1172 stack still needs to be freed. */
1173 if (!yyps->yynew && yyps->yyss != yyps->yyssa)
1174 YYSTACK_FREE (yyps->yyss);
1175 #endif
1176 free (yyps);]b4_pure_if([], [[
1177 yypstate_allocated = 0;]])[
1178 }
1179 ]b4_pure_if([[
1180 #define ]b4_prefix[nerrs yyps->]b4_prefix[nerrs]])[
1181 #define yystate yyps->yystate
1182 #define yyerrstatus yyps->yyerrstatus
1183 #define yyssa yyps->yyssa
1184 #define yyss yyps->yyss
1185 #define yyssp yyps->yyssp
1186 #define yyvsa yyps->yyvsa
1187 #define yyvs yyps->yyvs
1188 #define yyvsp yyps->yyvsp]b4_locations_if([[
1189 #define yylsa yyps->yylsa
1190 #define yyls yyps->yyls
1191 #define yylsp yyps->yylsp
1192 #define yyerror_range yyps->yyerror_range]])[
1193 #define yystacksize yyps->yystacksize
1194
1195
1196 /*---------------.
1197 | yypush_parse. |
1198 `---------------*/
1199
1200 ]b4_c_function_def([[yypush_parse]], [[int]],
1201 [[[yypstate *yyps]], [[yyps]]]b4_pure_if([,
1202 [[[int yypushed_char]], [[yypushed_char]]],
1203 [[[YYSTYPE const *yypushed_val]], [[yypushed_val]]]b4_locations_if([,
1204 [[[YYLTYPE const *yypushed_loc]], [[yypushed_loc]]]])])m4_ifset([b4_parse_param], [,
1205 b4_parse_param]))], [[
1206
1207
1208 /*----------.
1209 | yyparse. |
1210 `----------*/
1211
1212 #ifdef YYPARSE_PARAM
1213 ]b4_c_function_def([yyparse], [int],
1214 [[void *YYPARSE_PARAM], [YYPARSE_PARAM]])[
1215 #else /* ! YYPARSE_PARAM */
1216 ]b4_c_function_def([yyparse], [int], b4_parse_param)[
1217 #endif]])[
1218 {]b4_pure_if([b4_declare_scanner_communication_variables
1219 ])b4_push_if([b4_pure_if([], [[
1220 int yypushed_char = yychar;
1221 YYSTYPE yypushed_val = yylval;]b4_locations_if([[
1222 YYLTYPE yypushed_loc = yylloc;]])
1223 ])],
1224 [b4_declare_parser_state_variables
1225 ])[
1226 int yyn;
1227 int yyresult;
1228 /* Lookahead token as an internal (translated) token number. */
1229 int yytoken;
1230 /* The variables used to return semantic value and location from the
1231 action routines. */
1232 YYSTYPE yyval;]b4_locations_if([[
1233 YYLTYPE yyloc;]])[
1234
1235 #if YYERROR_VERBOSE
1236 /* Buffer for error messages, and its allocated size. */
1237 char yymsgbuf[128];
1238 char *yymsg = yymsgbuf;
1239 YYSIZE_T yymsg_alloc = sizeof yymsgbuf;
1240 #endif
1241
1242 #define YYPOPSTACK(N) (yyvsp -= (N), yyssp -= (N)]b4_locations_if([, yylsp -= (N)])[)
1243
1244 /* The number of symbols on the RHS of the reduced rule.
1245 Keep to zero when no symbol should be popped. */
1246 int yylen = 0;]b4_push_if([[
1247
1248 if (!yyps->yynew)
1249 {
1250 yyn = yypact[yystate];
1251 goto yyread_pushed_token;
1252 }]])[
1253
1254 yytoken = 0;
1255 yyss = yyssa;
1256 yyvs = yyvsa;]b4_locations_if([[
1257 yyls = yylsa;]])[
1258 yystacksize = YYINITDEPTH;
1259
1260 YYDPRINTF ((stderr, "Starting parse\n"));
1261
1262 yystate = 0;
1263 yyerrstatus = 0;
1264 yynerrs = 0;
1265 yychar = YYEMPTY; /* Cause a token to be read. */
1266
1267 /* Initialize stack pointers.
1268 Waste one element of value and location stack
1269 so that they stay on the same level as the state stack.
1270 The wasted elements are never initialized. */
1271 yyssp = yyss;
1272 yyvsp = yyvs;]b4_locations_if([[
1273 yylsp = yyls;
1274
1275 #if defined YYLTYPE_IS_TRIVIAL && YYLTYPE_IS_TRIVIAL
1276 /* Initialize the default location before parsing starts. */
1277 yylloc.first_line = yylloc.last_line = ]b4_location_initial_line[;
1278 yylloc.first_column = yylloc.last_column = ]b4_location_initial_column[;
1279 #endif]])
1280 m4_ifdef([b4_initial_action],[
1281 m4_pushdef([b4_at_dollar], [m4_define([b4_at_dollar_used])yylloc])dnl
1282 m4_pushdef([b4_dollar_dollar], [m4_define([b4_dollar_dollar_used])yylval])dnl
1283 /* User initialization code. */
1284 b4_user_initial_action
1285 m4_popdef([b4_dollar_dollar])dnl
1286 m4_popdef([b4_at_dollar])])dnl
1287 m4_ifdef([b4_dollar_dollar_used],[[ yyvsp[0] = yylval;
1288 ]])dnl
1289 m4_ifdef([b4_at_dollar_used], [[ yylsp[0] = yylloc;
1290 ]])[
1291 goto yysetstate;
1292
1293 /*------------------------------------------------------------.
1294 | yynewstate -- Push a new state, which is found in yystate. |
1295 `------------------------------------------------------------*/
1296 yynewstate:
1297 /* In all cases, when you get here, the value and location stacks
1298 have just been pushed. So pushing a state here evens the stacks. */
1299 yyssp++;
1300
1301 yysetstate:
1302 *yyssp = yystate;
1303
1304 if (yyss + yystacksize - 1 <= yyssp)
1305 {
1306 /* Get the current used size of the three stacks, in elements. */
1307 YYSIZE_T yysize = yyssp - yyss + 1;
1308
1309 #ifdef yyoverflow
1310 {
1311 /* Give user a chance to reallocate the stack. Use copies of
1312 these so that the &'s don't force the real ones into
1313 memory. */
1314 YYSTYPE *yyvs1 = yyvs;
1315 yytype_int16 *yyss1 = yyss;]b4_locations_if([
1316 YYLTYPE *yyls1 = yyls;])[
1317
1318 /* Each stack pointer address is followed by the size of the
1319 data in use in that stack, in bytes. This used to be a
1320 conditional around just the two extra args, but that might
1321 be undefined if yyoverflow is a macro. */
1322 yyoverflow (YY_("memory exhausted"),
1323 &yyss1, yysize * sizeof (*yyssp),
1324 &yyvs1, yysize * sizeof (*yyvsp),]b4_locations_if([
1325 &yyls1, yysize * sizeof (*yylsp),])[
1326 &yystacksize);
1327 ]b4_locations_if([
1328 yyls = yyls1;])[
1329 yyss = yyss1;
1330 yyvs = yyvs1;
1331 }
1332 #else /* no yyoverflow */
1333 # ifndef YYSTACK_RELOCATE
1334 goto yyexhaustedlab;
1335 # else
1336 /* Extend the stack our own way. */
1337 if (YYMAXDEPTH <= yystacksize)
1338 goto yyexhaustedlab;
1339 yystacksize *= 2;
1340 if (YYMAXDEPTH < yystacksize)
1341 yystacksize = YYMAXDEPTH;
1342
1343 {
1344 yytype_int16 *yyss1 = yyss;
1345 union yyalloc *yyptr =
1346 (union yyalloc *) YYSTACK_ALLOC (YYSTACK_BYTES (yystacksize));
1347 if (! yyptr)
1348 goto yyexhaustedlab;
1349 YYSTACK_RELOCATE (yyss_alloc, yyss);
1350 YYSTACK_RELOCATE (yyvs_alloc, yyvs);]b4_locations_if([
1351 YYSTACK_RELOCATE (yyls_alloc, yyls);])[
1352 # undef YYSTACK_RELOCATE
1353 if (yyss1 != yyssa)
1354 YYSTACK_FREE (yyss1);
1355 }
1356 # endif
1357 #endif /* no yyoverflow */
1358
1359 yyssp = yyss + yysize - 1;
1360 yyvsp = yyvs + yysize - 1;]b4_locations_if([
1361 yylsp = yyls + yysize - 1;])[
1362
1363 YYDPRINTF ((stderr, "Stack size increased to %lu\n",
1364 (unsigned long int) yystacksize));
1365
1366 if (yyss + yystacksize - 1 <= yyssp)
1367 YYABORT;
1368 }
1369
1370 YYDPRINTF ((stderr, "Entering state %d\n", yystate));
1371
1372 if (yystate == YYFINAL)
1373 YYACCEPT;
1374
1375 goto yybackup;
1376
1377 /*-----------.
1378 | yybackup. |
1379 `-----------*/
1380 yybackup:
1381
1382 /* Do appropriate processing given the current state. Read a
1383 lookahead token if we need one and don't already have one. */
1384
1385 /* First try to decide what to do without reference to lookahead token. */
1386 yyn = yypact[yystate];
1387 if (yypact_value_is_default (yyn))
1388 goto yydefault;
1389
1390 /* Not known => get a lookahead token if don't already have one. */
1391
1392 /* YYCHAR is either YYEMPTY or YYEOF or a valid lookahead symbol. */
1393 if (yychar == YYEMPTY)
1394 {]b4_push_if([[
1395 if (!yyps->yynew)
1396 {]b4_use_push_for_pull_if([], [[
1397 YYDPRINTF ((stderr, "Return for a new token:\n"));]])[
1398 yyresult = YYPUSH_MORE;
1399 goto yypushreturn;
1400 }
1401 yyps->yynew = 0;]b4_pure_if([], [[
1402 /* Restoring the pushed token is only necessary for the first
1403 yypush_parse invocation since subsequent invocations don't overwrite
1404 it before jumping to yyread_pushed_token. */
1405 yychar = yypushed_char;
1406 yylval = yypushed_val;]b4_locations_if([[
1407 yylloc = yypushed_loc;]])])[
1408 yyread_pushed_token:]])[
1409 YYDPRINTF ((stderr, "Reading a token: "));]b4_push_if([b4_pure_if([[
1410 yychar = yypushed_char;
1411 if (yypushed_val)
1412 yylval = *yypushed_val;]b4_locations_if([[
1413 if (yypushed_loc)
1414 yylloc = *yypushed_loc;]])])], [[
1415 yychar = YYLEX;]])[
1416 }
1417
1418 if (yychar <= YYEOF)
1419 {
1420 yychar = yytoken = YYEOF;
1421 YYDPRINTF ((stderr, "Now at end of input.\n"));
1422 }
1423 else
1424 {
1425 yytoken = YYTRANSLATE (yychar);
1426 YY_SYMBOL_PRINT ("Next token is", yytoken, &yylval, &yylloc);
1427 }
1428
1429 /* If the proper action on seeing token YYTOKEN is to reduce or to
1430 detect an error, take that action. */
1431 yyn += yytoken;
1432 if (yyn < 0 || YYLAST < yyn || yycheck[yyn] != yytoken)
1433 goto yydefault;
1434 yyn = yytable[yyn];
1435 if (yyn <= 0)
1436 {
1437 if (yytable_value_is_error (yyn))
1438 goto yyerrlab;
1439 yyn = -yyn;
1440 goto yyreduce;
1441 }
1442
1443 /* Count tokens shifted since error; after three, turn off error
1444 status. */
1445 if (yyerrstatus)
1446 yyerrstatus--;
1447
1448 /* Shift the lookahead token. */
1449 YY_SYMBOL_PRINT ("Shifting", yytoken, &yylval, &yylloc);
1450
1451 /* Discard the shifted token. */
1452 yychar = YYEMPTY;
1453
1454 yystate = yyn;
1455 *++yyvsp = yylval;
1456 ]b4_locations_if([ *++yylsp = yylloc;])[
1457 goto yynewstate;
1458
1459
1460 /*-----------------------------------------------------------.
1461 | yydefault -- do the default action for the current state. |
1462 `-----------------------------------------------------------*/
1463 yydefault:
1464 yyn = yydefact[yystate];
1465 if (yyn == 0)
1466 goto yyerrlab;
1467 goto yyreduce;
1468
1469
1470 /*-----------------------------.
1471 | yyreduce -- Do a reduction. |
1472 `-----------------------------*/
1473 yyreduce:
1474 /* yyn is the number of a rule to reduce with. */
1475 yylen = yyr2[yyn];
1476
1477 /* If YYLEN is nonzero, implement the default value of the action:
1478 `$$ = $1'.
1479
1480 Otherwise, the following line sets YYVAL to garbage.
1481 This behavior is undocumented and Bison
1482 users should not rely upon it. Assigning to YYVAL
1483 unconditionally makes the parser a bit smaller, and it avoids a
1484 GCC warning that YYVAL may be used uninitialized. */
1485 yyval = yyvsp[1-yylen];
1486
1487 ]b4_locations_if(
1488 [[ /* Default location. */
1489 YYLLOC_DEFAULT (yyloc, (yylsp - yylen), yylen);]])[
1490 YY_REDUCE_PRINT (yyn);
1491 switch (yyn)
1492 {
1493 ]b4_user_actions[
1494 default: break;
1495 }
1496 /* User semantic actions sometimes alter yychar, and that requires
1497 that yytoken be updated with the new translation. We take the
1498 approach of translating immediately before every use of yytoken.
1499 One alternative is translating here after every semantic action,
1500 but that translation would be missed if the semantic action invokes
1501 YYABORT, YYACCEPT, or YYERROR immediately after altering yychar or
1502 if it invokes YYBACKUP. In the case of YYABORT or YYACCEPT, an
1503 incorrect destructor might then be invoked immediately. In the
1504 case of YYERROR or YYBACKUP, subsequent parser actions might lead
1505 to an incorrect destructor call or verbose syntax error message
1506 before the lookahead is translated. */
1507 YY_SYMBOL_PRINT ("-> $$ =", yyr1[yyn], &yyval, &yyloc);
1508
1509 YYPOPSTACK (yylen);
1510 yylen = 0;
1511 YY_STACK_PRINT (yyss, yyssp);
1512
1513 *++yyvsp = yyval;]b4_locations_if([
1514 *++yylsp = yyloc;])[
1515
1516 /* Now `shift' the result of the reduction. Determine what state
1517 that goes to, based on the state we popped back to and the rule
1518 number reduced by. */
1519
1520 yyn = yyr1[yyn];
1521
1522 yystate = yypgoto[yyn - YYNTOKENS] + *yyssp;
1523 if (0 <= yystate && yystate <= YYLAST && yycheck[yystate] == *yyssp)
1524 yystate = yytable[yystate];
1525 else
1526 yystate = yydefgoto[yyn - YYNTOKENS];
1527
1528 goto yynewstate;
1529
1530
1531 /*------------------------------------.
1532 | yyerrlab -- here on detecting error |
1533 `------------------------------------*/
1534 yyerrlab:
1535 /* Make sure we have latest lookahead translation. See comments at
1536 user semantic actions for why this is necessary. */
1537 yytoken = YYTRANSLATE (yychar);
1538
1539 /* If not already recovering from an error, report this error. */
1540 if (!yyerrstatus)
1541 {
1542 ++yynerrs;
1543 #if ! YYERROR_VERBOSE
1544 yyerror (]b4_yyerror_args[YY_("syntax error"));
1545 #else
1546 while (1)
1547 {
1548 int yysyntax_error_status =
1549 yysyntax_error (&yymsg_alloc, &yymsg, yystate, yytoken);
1550 if (yysyntax_error_status == 2 && 0 < yymsg_alloc)
1551 {
1552 if (yymsg != yymsgbuf)
1553 YYSTACK_FREE (yymsg);
1554 yymsg = (char *) YYSTACK_ALLOC (yymsg_alloc);
1555 if (yymsg)
1556 continue;
1557 yymsg = yymsgbuf;
1558 yymsg_alloc = sizeof yymsgbuf;
1559 }
1560 if (yysyntax_error_status == 0)
1561 yyerror (]b4_yyerror_args[yymsg);
1562 else
1563 yyerror (]b4_yyerror_args[YY_("syntax error"));
1564 if (yysyntax_error_status == 2)
1565 goto yyexhaustedlab;
1566 break;
1567 }
1568 #endif
1569 }
1570
1571 ]b4_locations_if([[ yyerror_range[1] = yylloc;]])[
1572
1573 if (yyerrstatus == 3)
1574 {
1575 /* If just tried and failed to reuse lookahead token after an
1576 error, discard it. */
1577
1578 if (yychar <= YYEOF)
1579 {
1580 /* Return failure if at end of input. */
1581 if (yychar == YYEOF)
1582 YYABORT;
1583 }
1584 else
1585 {
1586 yydestruct ("Error: discarding",
1587 yytoken, &yylval]b4_locations_if([, &yylloc])[]b4_user_args[);
1588 yychar = YYEMPTY;
1589 }
1590 }
1591
1592 /* Else will try to reuse lookahead token after shifting the error
1593 token. */
1594 goto yyerrlab1;
1595
1596
1597 /*---------------------------------------------------.
1598 | yyerrorlab -- error raised explicitly by YYERROR. |
1599 `---------------------------------------------------*/
1600 yyerrorlab:
1601
1602 /* Pacify compilers like GCC when the user code never invokes
1603 YYERROR and the label yyerrorlab therefore never appears in user
1604 code. */
1605 if (/*CONSTCOND*/ 0)
1606 goto yyerrorlab;
1607
1608 ]b4_locations_if([[ yyerror_range[1] = yylsp[1-yylen];
1609 ]])[ /* Do not reclaim the symbols of the rule which action triggered
1610 this YYERROR. */
1611 YYPOPSTACK (yylen);
1612 yylen = 0;
1613 YY_STACK_PRINT (yyss, yyssp);
1614 yystate = *yyssp;
1615 goto yyerrlab1;
1616
1617
1618 /*-------------------------------------------------------------.
1619 | yyerrlab1 -- common code for both syntax error and YYERROR. |
1620 `-------------------------------------------------------------*/
1621 yyerrlab1:
1622 yyerrstatus = 3; /* Each real token shifted decrements this. */
1623
1624 for (;;)
1625 {
1626 yyn = yypact[yystate];
1627 if (!yypact_value_is_default (yyn))
1628 {
1629 yyn += YYTERROR;
1630 if (0 <= yyn && yyn <= YYLAST && yycheck[yyn] == YYTERROR)
1631 {
1632 yyn = yytable[yyn];
1633 if (0 < yyn)
1634 break;
1635 }
1636 }
1637
1638 /* Pop the current state because it cannot handle the error token. */
1639 if (yyssp == yyss)
1640 YYABORT;
1641
1642 ]b4_locations_if([[ yyerror_range[1] = *yylsp;]])[
1643 yydestruct ("Error: popping",
1644 yystos[yystate], yyvsp]b4_locations_if([, yylsp])[]b4_user_args[);
1645 YYPOPSTACK (1);
1646 yystate = *yyssp;
1647 YY_STACK_PRINT (yyss, yyssp);
1648 }
1649
1650 *++yyvsp = yylval;
1651 ]b4_locations_if([[
1652 yyerror_range[2] = yylloc;
1653 /* Using YYLLOC is tempting, but would change the location of
1654 the lookahead. YYLOC is available though. */
1655 YYLLOC_DEFAULT (yyloc, yyerror_range, 2);
1656 *++yylsp = yyloc;]])[
1657
1658 /* Shift the error token. */
1659 YY_SYMBOL_PRINT ("Shifting", yystos[yyn], yyvsp, yylsp);
1660
1661 yystate = yyn;
1662 goto yynewstate;
1663
1664
1665 /*-------------------------------------.
1666 | yyacceptlab -- YYACCEPT comes here. |
1667 `-------------------------------------*/
1668 yyacceptlab:
1669 yyresult = 0;
1670 goto yyreturn;
1671
1672 /*-----------------------------------.
1673 | yyabortlab -- YYABORT comes here. |
1674 `-----------------------------------*/
1675 yyabortlab:
1676 yyresult = 1;
1677 goto yyreturn;
1678
1679 #if !defined(yyoverflow) || YYERROR_VERBOSE
1680 /*-------------------------------------------------.
1681 | yyexhaustedlab -- memory exhaustion comes here. |
1682 `-------------------------------------------------*/
1683 yyexhaustedlab:
1684 yyerror (]b4_yyerror_args[YY_("memory exhausted"));
1685 yyresult = 2;
1686 /* Fall through. */
1687 #endif
1688
1689 yyreturn:
1690 if (yychar != YYEMPTY)
1691 {
1692 /* Make sure we have latest lookahead translation. See comments at
1693 user semantic actions for why this is necessary. */
1694 yytoken = YYTRANSLATE (yychar);
1695 yydestruct ("Cleanup: discarding lookahead",
1696 yytoken, &yylval]b4_locations_if([, &yylloc])[]b4_user_args[);
1697 }
1698 /* Do not reclaim the symbols of the rule which action triggered
1699 this YYABORT or YYACCEPT. */
1700 YYPOPSTACK (yylen);
1701 YY_STACK_PRINT (yyss, yyssp);
1702 while (yyssp != yyss)
1703 {
1704 yydestruct ("Cleanup: popping",
1705 yystos[*yyssp], yyvsp]b4_locations_if([, yylsp])[]b4_user_args[);
1706 YYPOPSTACK (1);
1707 }
1708 #ifndef yyoverflow
1709 if (yyss != yyssa)
1710 YYSTACK_FREE (yyss);
1711 #endif]b4_push_if([[
1712 yyps->yynew = 1;
1713
1714 yypushreturn:]])[
1715 #if YYERROR_VERBOSE
1716 if (yymsg != yymsgbuf)
1717 YYSTACK_FREE (yymsg);
1718 #endif
1719 /* Make sure YYID is used. */
1720 return YYID (yyresult);
1721 }
1722
1723
1724 ]b4_epilogue
1725 b4_defines_if(
1726 [@output(b4_spec_defines_file@)@
1727 b4_copyright([Skeleton interface for Bison's Yacc-like parsers in C],
1728 [1984, 1989, 1990, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010])
1729
1730 b4_percent_code_get([[requires]])[]dnl
1731
1732 b4_token_enums_defines(b4_tokens)
1733
1734 [#if ! defined YYSTYPE && ! defined YYSTYPE_IS_DECLARED
1735 ]m4_ifdef([b4_stype],
1736 [[typedef union ]b4_union_name[
1737 {
1738 ]b4_user_stype[
1739 } YYSTYPE;
1740 # define YYSTYPE_IS_TRIVIAL 1]],
1741 [m4_if(b4_tag_seen_flag, 0,
1742 [[typedef int YYSTYPE;
1743 # define YYSTYPE_IS_TRIVIAL 1]])])[
1744 # define yystype YYSTYPE /* obsolescent; will be withdrawn */
1745 # define YYSTYPE_IS_DECLARED 1
1746 #endif
1747
1748 ]b4_pure_if([], [[extern YYSTYPE ]b4_prefix[lval;]])
1749
1750 b4_locations_if(
1751 [#if ! defined YYLTYPE && ! defined YYLTYPE_IS_DECLARED
1752 typedef struct YYLTYPE
1753 {
1754 int first_line;
1755 int first_column;
1756 int last_line;
1757 int last_column;
1758 } YYLTYPE;
1759 # define yyltype YYLTYPE /* obsolescent; will be withdrawn */
1760 # define YYLTYPE_IS_DECLARED 1
1761 # define YYLTYPE_IS_TRIVIAL 1
1762 #endif
1763
1764 ]b4_pure_if([], [[extern YYLTYPE ]b4_prefix[lloc;]])
1765 )dnl b4_locations_if
1766 b4_push_if([[
1767 #ifndef YYPUSH_DECLS
1768 # define YYPUSH_DECLS
1769 struct ]b4_prefix[pstate;
1770 typedef struct ]b4_prefix[pstate ]b4_prefix[pstate;
1771 enum { YYPUSH_MORE = 4 };
1772 ]b4_pull_if([b4_c_function_decl([b4_prefix[parse]], [[int]], b4_parse_param)
1773 ])b4_c_function_decl([b4_prefix[push_parse]], [[int]],
1774 [[b4_prefix[pstate *yyps]], [[yyps]]]b4_pure_if([,
1775 [[[int yypushed_char]], [[yypushed_char]]],
1776 [[[YYSTYPE const *yypushed_val]], [[yypushed_val]]]b4_locations_if([,
1777 [[[YYLTYPE const *yypushed_loc]], [[yypushed_loc]]]])])m4_ifset([b4_parse_param], [,
1778 b4_parse_param]))
1779 b4_pull_if([b4_c_function_decl([b4_prefix[pull_parse]], [[int]],
1780 [[b4_prefix[pstate *yyps]], [[yyps]]]m4_ifset([b4_parse_param], [,
1781 b4_parse_param]))])
1782 b4_c_function_decl([b4_prefix[pstate_new]], [b4_prefix[pstate *]],
1783 [[[void]], []])
1784 b4_c_function_decl([b4_prefix[pstate_delete]], [[void]],
1785 [[b4_prefix[pstate *yyps]], [[yyps]]])[
1786 #endif
1787 ]])
1788 b4_percent_code_get([[provides]])[]dnl
1789 ])dnl b4_defines_if
1790 m4_divert_pop(0)
bison