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1 -*- C -*-
2 # Yacc compatible skeleton for Bison
3
4 # Copyright (C) 1984, 1989-1990, 2000-2012 Free Software Foundation,
5 # Inc.
6
7 m4_pushdef([b4_copyright_years],
8 [1984, 1989-1990, 2000-2012])
9
10 # This program is free software: you can redistribute it and/or modify
11 # it under the terms of the GNU General Public License as published by
12 # the Free Software Foundation, either version 3 of the License, or
13 # (at your option) any later version.
14 #
15 # This program is distributed in the hope that it will be useful,
16 # but WITHOUT ANY WARRANTY; without even the implied warranty of
17 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 # GNU General Public License for more details.
19 #
20 # You should have received a copy of the GNU General Public License
21 # along with this program. If not, see <http://www.gnu.org/licenses/>.
22
23 # Check the value of %define api.push-pull.
24 b4_percent_define_default([[api.push-pull]], [[pull]])
25 b4_percent_define_check_values([[[[api.push-pull]],
26 [[pull]], [[push]], [[both]]]])
27 b4_define_flag_if([pull]) m4_define([b4_pull_flag], [[1]])
28 b4_define_flag_if([push]) m4_define([b4_push_flag], [[1]])
29 m4_case(b4_percent_define_get([[api.push-pull]]),
30 [pull], [m4_define([b4_push_flag], [[0]])],
31 [push], [m4_define([b4_pull_flag], [[0]])])
32
33 # Handle BISON_USE_PUSH_FOR_PULL for the test suite. So that push parsing
34 # tests function as written, do not let BISON_USE_PUSH_FOR_PULL modify the
35 # behavior of Bison at all when push parsing is already requested.
36 b4_define_flag_if([use_push_for_pull])
37 b4_use_push_for_pull_if([
38 b4_push_if([m4_define([b4_use_push_for_pull_flag], [[0]])],
39 [m4_define([b4_push_flag], [[1]])])])
40
41 # Check the value of %define parse.lac and friends, where LAC stands for
42 # lookahead correction.
43 b4_percent_define_default([[parse.lac]], [[none]])
44 b4_percent_define_default([[parse.lac.es-capacity-initial]], [[20]])
45 b4_percent_define_default([[parse.lac.memory-trace]], [[failures]])
46 b4_percent_define_check_values([[[[parse.lac]], [[full]], [[none]]]],
47 [[[[parse.lac.memory-trace]],
48 [[failures]], [[full]]]])
49 b4_define_flag_if([lac])
50 m4_define([b4_lac_flag],
51 [m4_if(b4_percent_define_get([[parse.lac]]),
52 [none], [[0]], [[1]])])
53
54 m4_include(b4_pkgdatadir/[c.m4])
55
56 ## ---------------- ##
57 ## Default values. ##
58 ## ---------------- ##
59
60 # Stack parameters.
61 m4_define_default([b4_stack_depth_max], [10000])
62 m4_define_default([b4_stack_depth_init], [200])
63
64
65 ## ------------------------ ##
66 ## Pure/impure interfaces. ##
67 ## ------------------------ ##
68
69 b4_percent_define_default([[api.pure]], [[false]])
70 b4_percent_define_check_values([[[[api.pure]],
71 [[false]], [[true]], [[]], [[full]]]])
72
73 m4_define([b4_pure_flag], [[0]])
74 m4_case(b4_percent_define_get([[api.pure]]),
75 [false], [m4_define([b4_pure_flag], [[0]])],
76 [true], [m4_define([b4_pure_flag], [[1]])],
77 [], [m4_define([b4_pure_flag], [[1]])],
78 [full], [m4_define([b4_pure_flag], [[2]])])
79
80 m4_define([b4_pure_if],
81 [m4_case(b4_pure_flag,
82 [0], [$2],
83 [1], [$1],
84 [2], [$1])])
85 [m4_fatal([invalid api.pure value: ]$1)])])
86
87 # b4_yyerror_arg_loc_if(ARG)
88 # --------------------------
89 # Expand ARG iff yyerror is to be given a location as argument.
90 m4_define([b4_yyerror_arg_loc_if],
91 [b4_locations_if([m4_case(b4_pure_flag,
92 [1], [m4_ifset([b4_parse_param], [$1])],
93 [2], [$1])])])
94
95 # b4_yyerror_args
96 # ---------------
97 # Arguments passed to yyerror: user args plus yylloc.
98 m4_define([b4_yyerror_args],
99 [b4_yyerror_arg_loc_if([&yylloc, ])dnl
100 m4_ifset([b4_parse_param], [b4_args(b4_parse_param), ])])
101
102
103 # b4_lex_param
104 # ------------
105 # Accumulate in b4_lex_param all the yylex arguments.
106 # b4_lex_param arrives quoted twice, but we want to keep only one level.
107 m4_define([b4_lex_param],
108 m4_dquote(b4_pure_if([[[[YYSTYPE *yylval]], [[&yylval]]][]dnl
109 b4_locations_if([, [[YYLTYPE *yylloc], [&yylloc]]])m4_ifdef([b4_lex_param], [, ])])dnl
110 m4_ifdef([b4_lex_param], b4_lex_param)))
111
112
113 ## ------------ ##
114 ## Data Types. ##
115 ## ------------ ##
116
117 # b4_int_type(MIN, MAX)
118 # ---------------------
119 # Return the smallest int type able to handle numbers ranging from
120 # MIN to MAX (included). Overwrite the version from c.m4, which
121 # uses only C89 types, so that the user can override the shorter
122 # types, and so that pre-C89 compilers are handled correctly.
123 m4_define([b4_int_type],
124 [m4_if(b4_ints_in($@, [0], [255]), [1], [yytype_uint8],
125 b4_ints_in($@, [-128], [127]), [1], [yytype_int8],
126
127 b4_ints_in($@, [0], [65535]), [1], [yytype_uint16],
128 b4_ints_in($@, [-32768], [32767]), [1], [yytype_int16],
129
130 m4_eval([0 <= $1]), [1], [unsigned int],
131
132 [int])])
133
134
135 ## ----------------- ##
136 ## Semantic Values. ##
137 ## ----------------- ##
138
139
140 # b4_lhs_value([TYPE])
141 # --------------------
142 # Expansion of $<TYPE>$.
143 m4_define([b4_lhs_value],
144 [b4_symbol_value(yyval, [$1])])
145
146
147 # b4_rhs_value(RULE-LENGTH, NUM, [TYPE])
148 # --------------------------------------
149 # Expansion of $<TYPE>NUM, where the current rule has RULE-LENGTH
150 # symbols on RHS.
151 m4_define([b4_rhs_value],
152 [b4_symbol_value([yyvsp@{b4_subtract([$2], [$1])@}], [$3])])
153
154
155
156 ## ----------- ##
157 ## Locations. ##
158 ## ----------- ##
159
160 # b4_lhs_location()
161 # -----------------
162 # Expansion of @$.
163 m4_define([b4_lhs_location],
164 [(yyloc)])
165
166
167 # b4_rhs_location(RULE-LENGTH, NUM)
168 # ---------------------------------
169 # Expansion of @NUM, where the current rule has RULE-LENGTH symbols
170 # on RHS.
171 m4_define([b4_rhs_location],
172 [(yylsp@{b4_subtract([$2], [$1])@})])
173
174
175 ## -------------- ##
176 ## Declarations. ##
177 ## -------------- ##
178
179 # b4_declare_scanner_communication_variables
180 # ------------------------------------------
181 # Declare the variables that are global, or local to YYPARSE if
182 # pure-parser.
183 m4_define([b4_declare_scanner_communication_variables], [[
184 /* The lookahead symbol. */
185 int yychar;
186
187 ]b4_pure_if([[
188 #if defined __GNUC__ && 407 <= __GNUC__ * 100 + __GNUC_MINOR__
189 /* Suppress an incorrect diagnostic about yylval being uninitialized. */
190 # define YY_IGNORE_MAYBE_UNINITIALIZED_BEGIN \
191 _Pragma ("GCC diagnostic push") \
192 _Pragma ("GCC diagnostic ignored \"-Wuninitialized\"")\
193 _Pragma ("GCC diagnostic ignored \"-Wmaybe-uninitialized\"")
194 # define YY_IGNORE_MAYBE_UNINITIALIZED_END \
195 _Pragma ("GCC diagnostic pop")
196 #else
197 /* Default value used for initialization, for pacifying older GCCs
198 or non-GCC compilers. */
199 static YYSTYPE yyval_default;
200 # define YY_INITIAL_VALUE(Value) = Value
201 #endif]b4_locations_if([[
202 static YYLTYPE yyloc_default][]b4_yyloc_default[;]])])[
203 #ifndef YY_IGNORE_MAYBE_UNINITIALIZED_BEGIN
204 # define YY_IGNORE_MAYBE_UNINITIALIZED_BEGIN
205 # define YY_IGNORE_MAYBE_UNINITIALIZED_END
206 #endif
207 #ifndef YY_INITIAL_VALUE
208 # define YY_INITIAL_VALUE(Value) /* Nothing. */
209 #endif
210
211 /* The semantic value of the lookahead symbol. */
212 YYSTYPE yylval YY_INITIAL_VALUE(yyval_default);]b4_locations_if([[
213
214 /* Location data for the lookahead symbol. */
215 YYLTYPE yylloc]b4_pure_if([ = yyloc_default], [b4_yyloc_default])[;
216 ]])b4_pure_if([], [[
217
218 /* Number of syntax errors so far. */
219 int yynerrs;]])])
220
221
222 # b4_declare_parser_state_variables
223 # ---------------------------------
224 # Declare all the variables that are needed to maintain the parser state
225 # between calls to yypush_parse.
226 m4_define([b4_declare_parser_state_variables], [b4_pure_if([[
227 /* Number of syntax errors so far. */
228 int yynerrs;
229 ]])[
230 int yystate;
231 /* Number of tokens to shift before error messages enabled. */
232 int yyerrstatus;
233
234 /* The stacks and their tools:
235 `yyss': related to states.
236 `yyvs': related to semantic values.]b4_locations_if([[
237 `yyls': related to locations.]])[
238
239 Refer to the stacks through separate pointers, to allow yyoverflow
240 to reallocate them elsewhere. */
241
242 /* The state stack. */
243 yytype_int16 yyssa[YYINITDEPTH];
244 yytype_int16 *yyss;
245 yytype_int16 *yyssp;
246
247 /* The semantic value stack. */
248 YYSTYPE yyvsa[YYINITDEPTH];
249 YYSTYPE *yyvs;
250 YYSTYPE *yyvsp;]b4_locations_if([[
251
252 /* The location stack. */
253 YYLTYPE yylsa[YYINITDEPTH];
254 YYLTYPE *yyls;
255 YYLTYPE *yylsp;
256
257 /* The locations where the error started and ended. */
258 YYLTYPE yyerror_range[3];]])[
259
260 YYSIZE_T yystacksize;]b4_lac_if([[
261
262 yytype_int16 yyesa@{]b4_percent_define_get([[parse.lac.es-capacity-initial]])[@};
263 yytype_int16 *yyes;
264 YYSIZE_T yyes_capacity;]])])
265
266
267 # b4_declare_yyparse_push_
268 # ------------------------
269 # Declaration of yyparse (and dependencies) when using the push parser
270 # (including in pull mode).
271 m4_define([b4_declare_yyparse_push_],
272 [[#ifndef YYPUSH_MORE_DEFINED
273 # define YYPUSH_MORE_DEFINED
274 enum { YYPUSH_MORE = 4 };
275 #endif
276
277 typedef struct ]b4_prefix[pstate ]b4_prefix[pstate;
278
279 ]b4_pull_if([b4_function_declare([b4_prefix[parse]], [[int]], b4_parse_param)
280 ])b4_function_declare([b4_prefix[push_parse]], [[int]],
281 [[b4_prefix[pstate *ps]], [[ps]]]b4_pure_if([,
282 [[[int pushed_char]], [[pushed_char]]],
283 [[b4_api_PREFIX[STYPE const *pushed_val]], [[pushed_val]]]b4_locations_if([,
284 [[b4_api_PREFIX[LTYPE *pushed_loc]], [[pushed_loc]]]])])m4_ifset([b4_parse_param], [,
285 b4_parse_param]))
286 b4_pull_if([b4_function_declare([b4_prefix[pull_parse]], [[int]],
287 [[b4_prefix[pstate *ps]], [[ps]]]m4_ifset([b4_parse_param], [,
288 b4_parse_param]))])
289 b4_function_declare([b4_prefix[pstate_new]], [b4_prefix[pstate *]],
290 [[[void]], []])
291 b4_function_declare([b4_prefix[pstate_delete]], [[void]],
292 [[b4_prefix[pstate *ps]], [[ps]]])dnl
293 ])
294
295 # b4_declare_yyparse_
296 # -------------------
297 # When not the push parser.
298 m4_define([b4_declare_yyparse_],
299 [b4_function_declare(b4_prefix[parse], [int], b4_parse_param)])
300
301
302 # b4_declare_yyparse
303 # ------------------
304 m4_define([b4_declare_yyparse],
305 [b4_push_if([b4_declare_yyparse_push_],
306 [b4_declare_yyparse_])[]dnl
307 ])
308
309
310 # b4_shared_declarations
311 # ----------------------
312 # Declaration that might either go into the header (if --defines)
313 # or open coded in the parser body.
314 m4_define([b4_shared_declarations],
315 [b4_cpp_guard_open([b4_spec_defines_file])[
316 ]b4_declare_yydebug[
317 ]b4_percent_code_get([[requires]])[
318 ]b4_token_enums_defines[
319 ]b4_declare_yylstype[
320 ]b4_declare_yyparse[
321 ]b4_percent_code_get([[provides]])[
322 ]b4_cpp_guard_close([b4_spec_defines_file])[]dnl
323 ])
324
325 ## -------------- ##
326 ## Output files. ##
327 ## -------------- ##
328
329 b4_output_begin([b4_parser_file_name])
330 b4_copyright([Bison implementation for Yacc-like parsers in C])[
331
332 /* C LALR(1) parser skeleton written by Richard Stallman, by
333 simplifying the original so-called "semantic" parser. */
334
335 /* All symbols defined below should begin with yy or YY, to avoid
336 infringing on user name space. This should be done even for local
337 variables, as they might otherwise be expanded by user macros.
338 There are some unavoidable exceptions within include files to
339 define necessary library symbols; they are noted "INFRINGES ON
340 USER NAME SPACE" below. */
341
342 ]b4_identification
343 b4_percent_code_get([[top]])[]dnl
344 m4_if(b4_api_prefix, [yy], [],
345 [[/* Substitute the type names. */
346 #define YYSTYPE ]b4_api_PREFIX[STYPE]b4_locations_if([[
347 #define YYLTYPE ]b4_api_PREFIX[LTYPE]])])[
348 ]m4_if(b4_prefix, [yy], [],
349 [[/* Substitute the variable and function names. */]b4_pull_if([[
350 #define yyparse ]b4_prefix[parse]])b4_push_if([[
351 #define yypush_parse ]b4_prefix[push_parse]b4_pull_if([[
352 #define yypull_parse ]b4_prefix[pull_parse]])[
353 #define yypstate_new ]b4_prefix[pstate_new
354 #define yypstate_delete ]b4_prefix[pstate_delete
355 #define yypstate ]b4_prefix[pstate]])[
356 #define yylex ]b4_prefix[lex
357 #define yyerror ]b4_prefix[error
358 #define yylval ]b4_prefix[lval
359 #define yychar ]b4_prefix[char
360 #define yydebug ]b4_prefix[debug
361 #define yynerrs ]b4_prefix[nerrs]b4_locations_if([[
362 #define yylloc ]b4_prefix[lloc]])])[
363
364 /* Copy the first part of user declarations. */
365 ]b4_user_pre_prologue[
366
367 ]b4_null_define[
368
369 /* Enabling verbose error messages. */
370 #ifdef YYERROR_VERBOSE
371 # undef YYERROR_VERBOSE
372 # define YYERROR_VERBOSE 1
373 #else
374 # define YYERROR_VERBOSE ]b4_error_verbose_if([1], [0])[
375 #endif
376
377 ]m4_ifval(m4_quote(b4_spec_defines_file),
378 [[/* In a future release of Bison, this section will be replaced
379 by #include "@basename(]b4_spec_defines_file[@)". */
380 ]])dnl
381 b4_shared_declarations[
382
383 /* Copy the second part of user declarations. */
384 ]b4_user_post_prologue
385 b4_percent_code_get[]dnl
386
387 [#ifdef short
388 # undef short
389 #endif
390
391 #ifdef YYTYPE_UINT8
392 typedef YYTYPE_UINT8 yytype_uint8;
393 #else
394 typedef unsigned char yytype_uint8;
395 #endif
396
397 #ifdef YYTYPE_INT8
398 typedef YYTYPE_INT8 yytype_int8;
399 #else
400 typedef signed char yytype_int8;
401 #endif
402
403 #ifdef YYTYPE_UINT16
404 typedef YYTYPE_UINT16 yytype_uint16;
405 #else
406 typedef unsigned short int yytype_uint16;
407 #endif
408
409 #ifdef YYTYPE_INT16
410 typedef YYTYPE_INT16 yytype_int16;
411 #else
412 typedef short int yytype_int16;
413 #endif
414
415 #ifndef YYSIZE_T
416 # ifdef __SIZE_TYPE__
417 # define YYSIZE_T __SIZE_TYPE__
418 # elif defined size_t
419 # define YYSIZE_T size_t
420 # elif ! defined YYSIZE_T
421 # include <stddef.h> /* INFRINGES ON USER NAME SPACE */
422 # define YYSIZE_T size_t
423 # else
424 # define YYSIZE_T unsigned int
425 # endif
426 #endif
427
428 #define YYSIZE_MAXIMUM ((YYSIZE_T) -1)
429
430 #ifndef YY_
431 # if defined YYENABLE_NLS && YYENABLE_NLS
432 # if ENABLE_NLS
433 # include <libintl.h> /* INFRINGES ON USER NAME SPACE */
434 # define YY_(Msgid) dgettext ("bison-runtime", Msgid)
435 # endif
436 # endif
437 # ifndef YY_
438 # define YY_(Msgid) Msgid
439 # endif
440 #endif
441
442 /* Suppress unused-variable warnings by "using" E. */
443 #ifdef __GNUC__
444 # define YYUSE(E) ((void) (E))
445 #else
446 # define YYUSE(E) /* empty */
447 #endif
448
449 #if ]b4_lac_if([[1]], [[! defined yyoverflow || YYERROR_VERBOSE]])[
450
451 /* The parser invokes alloca or malloc; define the necessary symbols. */]dnl
452 b4_push_if([], [b4_lac_if([], [[
453
454 # ifdef YYSTACK_USE_ALLOCA
455 # if YYSTACK_USE_ALLOCA
456 # ifdef __GNUC__
457 # define YYSTACK_ALLOC __builtin_alloca
458 # elif defined __BUILTIN_VA_ARG_INCR
459 # include <alloca.h> /* INFRINGES ON USER NAME SPACE */
460 # elif defined _AIX
461 # define YYSTACK_ALLOC __alloca
462 # elif defined _MSC_VER
463 # include <malloc.h> /* INFRINGES ON USER NAME SPACE */
464 # define alloca _alloca
465 # else
466 # define YYSTACK_ALLOC alloca
467 # if ! defined _ALLOCA_H && ! defined EXIT_SUCCESS
468 # include <stdlib.h> /* INFRINGES ON USER NAME SPACE */
469 /* Use EXIT_SUCCESS as a witness for stdlib.h. */
470 # ifndef EXIT_SUCCESS
471 # define EXIT_SUCCESS 0
472 # endif
473 # endif
474 # endif
475 # endif
476 # endif]])])[
477
478 # ifdef YYSTACK_ALLOC
479 /* Pacify GCC's `empty if-body' warning. */
480 # define YYSTACK_FREE(Ptr) do { /* empty */; } while (0)
481 # ifndef YYSTACK_ALLOC_MAXIMUM
482 /* The OS might guarantee only one guard page at the bottom of the stack,
483 and a page size can be as small as 4096 bytes. So we cannot safely
484 invoke alloca (N) if N exceeds 4096. Use a slightly smaller number
485 to allow for a few compiler-allocated temporary stack slots. */
486 # define YYSTACK_ALLOC_MAXIMUM 4032 /* reasonable circa 2006 */
487 # endif
488 # else
489 # define YYSTACK_ALLOC YYMALLOC
490 # define YYSTACK_FREE YYFREE
491 # ifndef YYSTACK_ALLOC_MAXIMUM
492 # define YYSTACK_ALLOC_MAXIMUM YYSIZE_MAXIMUM
493 # endif
494 # if (defined __cplusplus && ! defined EXIT_SUCCESS \
495 && ! ((defined YYMALLOC || defined malloc) \
496 && (defined YYFREE || defined free)))
497 # include <stdlib.h> /* INFRINGES ON USER NAME SPACE */
498 # ifndef EXIT_SUCCESS
499 # define EXIT_SUCCESS 0
500 # endif
501 # endif
502 # ifndef YYMALLOC
503 # define YYMALLOC malloc
504 # if ! defined malloc && ! defined EXIT_SUCCESS
505 void *malloc (YYSIZE_T); /* INFRINGES ON USER NAME SPACE */
506 # endif
507 # endif
508 # ifndef YYFREE
509 # define YYFREE free
510 # if ! defined free && ! defined EXIT_SUCCESS
511 void free (void *); /* INFRINGES ON USER NAME SPACE */
512 # endif
513 # endif
514 # endif]b4_lac_if([[
515 # define YYCOPY_NEEDED 1]])[
516 #endif]b4_lac_if([], [[ /* ! defined yyoverflow || YYERROR_VERBOSE */]])[
517
518
519 #if (! defined yyoverflow \
520 && (! defined __cplusplus \
521 || (]b4_locations_if([[defined ]b4_api_PREFIX[LTYPE_IS_TRIVIAL && ]b4_api_PREFIX[LTYPE_IS_TRIVIAL \
522 && ]])[defined ]b4_api_PREFIX[STYPE_IS_TRIVIAL && ]b4_api_PREFIX[STYPE_IS_TRIVIAL)))
523
524 /* A type that is properly aligned for any stack member. */
525 union yyalloc
526 {
527 yytype_int16 yyss_alloc;
528 YYSTYPE yyvs_alloc;]b4_locations_if([
529 YYLTYPE yyls_alloc;])[
530 };
531
532 /* The size of the maximum gap between one aligned stack and the next. */
533 # define YYSTACK_GAP_MAXIMUM (sizeof (union yyalloc) - 1)
534
535 /* The size of an array large to enough to hold all stacks, each with
536 N elements. */
537 ]b4_locations_if(
538 [# define YYSTACK_BYTES(N) \
539 ((N) * (sizeof (yytype_int16) + sizeof (YYSTYPE) + sizeof (YYLTYPE)) \
540 + 2 * YYSTACK_GAP_MAXIMUM)],
541 [# define YYSTACK_BYTES(N) \
542 ((N) * (sizeof (yytype_int16) + sizeof (YYSTYPE)) \
543 + YYSTACK_GAP_MAXIMUM)])[
544
545 # define YYCOPY_NEEDED 1
546
547 /* Relocate STACK from its old location to the new one. The
548 local variables YYSIZE and YYSTACKSIZE give the old and new number of
549 elements in the stack, and YYPTR gives the new location of the
550 stack. Advance YYPTR to a properly aligned location for the next
551 stack. */
552 # define YYSTACK_RELOCATE(Stack_alloc, Stack) \
553 do \
554 { \
555 YYSIZE_T yynewbytes; \
556 YYCOPY (&yyptr->Stack_alloc, Stack, yysize); \
557 Stack = &yyptr->Stack_alloc; \
558 yynewbytes = yystacksize * sizeof (*Stack) + YYSTACK_GAP_MAXIMUM; \
559 yyptr += yynewbytes / sizeof (*yyptr); \
560 } \
561 while (0)
562
563 #endif
564
565 #if defined YYCOPY_NEEDED && YYCOPY_NEEDED
566 /* Copy COUNT objects from SRC to DST. The source and destination do
567 not overlap. */
568 # ifndef YYCOPY
569 # if defined __GNUC__ && 1 < __GNUC__
570 # define YYCOPY(Dst, Src, Count) \
571 __builtin_memcpy (Dst, Src, (Count) * sizeof (*(Src)))
572 # else
573 # define YYCOPY(Dst, Src, Count) \
574 do \
575 { \
576 YYSIZE_T yyi; \
577 for (yyi = 0; yyi < (Count); yyi++) \
578 (Dst)[yyi] = (Src)[yyi]; \
579 } \
580 while (0)
581 # endif
582 # endif
583 #endif /* !YYCOPY_NEEDED */
584
585 /* YYFINAL -- State number of the termination state. */
586 #define YYFINAL ]b4_final_state_number[
587 /* YYLAST -- Last index in YYTABLE. */
588 #define YYLAST ]b4_last[
589
590 /* YYNTOKENS -- Number of terminals. */
591 #define YYNTOKENS ]b4_tokens_number[
592 /* YYNNTS -- Number of nonterminals. */
593 #define YYNNTS ]b4_nterms_number[
594 /* YYNRULES -- Number of rules. */
595 #define YYNRULES ]b4_rules_number[
596 /* YYNSTATES -- Number of states. */
597 #define YYNSTATES ]b4_states_number[
598
599 /* YYTRANSLATE[YYX] -- Symbol number corresponding to YYX as returned
600 by yylex, with out-of-bounds checking. */
601 #define YYUNDEFTOK ]b4_undef_token_number[
602 #define YYMAXUTOK ]b4_user_token_number_max[
603
604 #define YYTRANSLATE(YYX) \
605 ((unsigned int) (YYX) <= YYMAXUTOK ? yytranslate[YYX] : YYUNDEFTOK)
606
607 /* YYTRANSLATE[TOKEN-NUM] -- Symbol number corresponding to TOKEN-NUM
608 as returned by yylex, without out-of-bounds checking. */
609 static const ]b4_int_type_for([b4_translate])[ yytranslate[] =
610 {
611 ]b4_translate[
612 };
613
614 #if ]b4_api_PREFIX[DEBUG
615 ]b4_integral_parser_table_define([rline], [b4_rline],
616 [YYRLINE[YYN] -- Source line where rule number YYN was defined.])[
617 #endif
618
619 #if ]b4_api_PREFIX[DEBUG || YYERROR_VERBOSE || ]b4_token_table_flag[
620 /* YYTNAME[SYMBOL-NUM] -- String name of the symbol SYMBOL-NUM.
621 First, the terminals, then, starting at YYNTOKENS, nonterminals. */
622 static const char *const yytname[] =
623 {
624 ]b4_tname[
625 };
626 #endif
627
628 # ifdef YYPRINT
629 /* YYTOKNUM[NUM] -- (External) token number corresponding to the
630 (internal) symbol number NUM (which must be that of a token). */
631 static const ]b4_int_type_for([b4_toknum])[ yytoknum[] =
632 {
633 ]b4_toknum[
634 };
635 # endif
636
637 #define YYPACT_NINF ]b4_pact_ninf[
638
639 #define yypact_value_is_default(Yystate) \
640 ]b4_table_value_equals([[pact]], [[Yystate]], [b4_pact_ninf])[
641
642 #define YYTABLE_NINF ]b4_table_ninf[
643
644 #define yytable_value_is_error(Yytable_value) \
645 ]b4_table_value_equals([[table]], [[Yytable_value]], [b4_table_ninf])[
646
647 ]b4_parser_tables_define[
648
649 #define yyerrok (yyerrstatus = 0)
650 #define yyclearin (yychar = YYEMPTY)
651 #define YYEMPTY (-2)
652 #define YYEOF 0
653
654 #define YYACCEPT goto yyacceptlab
655 #define YYABORT goto yyabortlab
656 #define YYERROR goto yyerrorlab
657
658
659 #define YYRECOVERING() (!!yyerrstatus)
660
661 #define YYBACKUP(Token, Value) \
662 do \
663 if (yychar == YYEMPTY) \
664 { \
665 yychar = (Token); \
666 yylval = (Value); \
667 YYPOPSTACK (yylen); \
668 yystate = *yyssp; \]b4_lac_if([[
669 YY_LAC_DISCARD ("YYBACKUP"); \]])[
670 goto yybackup; \
671 } \
672 else \
673 { \
674 yyerror (]b4_yyerror_args[YY_("syntax error: cannot back up")); \
675 YYERROR; \
676 } \
677 while (0)
678
679 /* Error token number */
680 #define YYTERROR 1
681 #define YYERRCODE 256
682
683 ]b4_locations_if([[
684 ]b4_yylloc_default_define[
685 #define YYRHSLOC(Rhs, K) ((Rhs)[K])
686 ]])[
687 ]b4_yy_location_print_define[
688
689 /* YYLEX -- calling `yylex' with the right arguments. */
690 #define YYLEX ]b4_function_call([yylex], [int], b4_lex_param)[
691
692 /* Enable debugging if requested. */
693 #if ]b4_api_PREFIX[DEBUG
694
695 # ifndef YYFPRINTF
696 # include <stdio.h> /* INFRINGES ON USER NAME SPACE */
697 # define YYFPRINTF fprintf
698 # endif
699
700 # define YYDPRINTF(Args) \
701 do { \
702 if (yydebug) \
703 YYFPRINTF Args; \
704 } while (0)
705
706 # define YY_SYMBOL_PRINT(Title, Type, Value, Location) \
707 do { \
708 if (yydebug) \
709 { \
710 YYFPRINTF (stderr, "%s ", Title); \
711 yy_symbol_print (stderr, \
712 Type, Value]b4_locations_if([, Location])[]b4_user_args[); \
713 YYFPRINTF (stderr, "\n"); \
714 } \
715 } while (0)
716
717 ]b4_yy_symbol_print_define[
718
719 /*------------------------------------------------------------------.
720 | yy_stack_print -- Print the state stack from its BOTTOM up to its |
721 | TOP (included). |
722 `------------------------------------------------------------------*/
723
724 ]b4_function_define([yy_stack_print], [static void],
725 [[yytype_int16 *yybottom], [yybottom]],
726 [[yytype_int16 *yytop], [yytop]])[
727 {
728 YYFPRINTF (stderr, "Stack now");
729 for (; yybottom <= yytop; yybottom++)
730 {
731 int yybot = *yybottom;
732 YYFPRINTF (stderr, " %d", yybot);
733 }
734 YYFPRINTF (stderr, "\n");
735 }
736
737 # define YY_STACK_PRINT(Bottom, Top) \
738 do { \
739 if (yydebug) \
740 yy_stack_print ((Bottom), (Top)); \
741 } while (0)
742
743
744 /*------------------------------------------------.
745 | Report that the YYRULE is going to be reduced. |
746 `------------------------------------------------*/
747
748 ]b4_function_define([yy_reduce_print], [static void],
749 [[yytype_int16 *yyssp], [yyssp]],
750 [[YYSTYPE *yyvsp], [yyvsp]],
751 b4_locations_if([[[YYLTYPE *yylsp], [yylsp]],
752 ])[[int yyrule], [yyrule]]m4_ifset([b4_parse_param], [,
753 b4_parse_param]))[
754 {
755 unsigned long int yylno = yyrline[yyrule];
756 int yynrhs = yyr2[yyrule];
757 int yyi;
758 YYFPRINTF (stderr, "Reducing stack by rule %d (line %lu):\n",
759 yyrule - 1, yylno);
760 /* The symbols being reduced. */
761 for (yyi = 0; yyi < yynrhs; yyi++)
762 {
763 YYFPRINTF (stderr, " $%d = ", yyi + 1);
764 yy_symbol_print (stderr,
765 yystos[yyssp[yyi + 1 - yynrhs]],
766 &]b4_rhs_value(yynrhs, yyi + 1)[
767 ]b4_locations_if([, &]b4_rhs_location(yynrhs, yyi + 1))[]dnl
768 b4_user_args[);
769 YYFPRINTF (stderr, "\n");
770 }
771 }
772
773 # define YY_REDUCE_PRINT(Rule) \
774 do { \
775 if (yydebug) \
776 yy_reduce_print (yyssp, yyvsp, ]b4_locations_if([yylsp, ])[Rule]b4_user_args[); \
777 } while (0)
778
779 /* Nonzero means print parse trace. It is left uninitialized so that
780 multiple parsers can coexist. */
781 int yydebug;
782 #else /* !]b4_api_PREFIX[DEBUG */
783 # define YYDPRINTF(Args)
784 # define YY_SYMBOL_PRINT(Title, Type, Value, Location)
785 # define YY_STACK_PRINT(Bottom, Top)
786 # define YY_REDUCE_PRINT(Rule)
787 #endif /* !]b4_api_PREFIX[DEBUG */
788
789
790 /* YYINITDEPTH -- initial size of the parser's stacks. */
791 #ifndef YYINITDEPTH
792 # define YYINITDEPTH ]b4_stack_depth_init[
793 #endif
794
795 /* YYMAXDEPTH -- maximum size the stacks can grow to (effective only
796 if the built-in stack extension method is used).
797
798 Do not make this value too large; the results are undefined if
799 YYSTACK_ALLOC_MAXIMUM < YYSTACK_BYTES (YYMAXDEPTH)
800 evaluated with infinite-precision integer arithmetic. */
801
802 #ifndef YYMAXDEPTH
803 # define YYMAXDEPTH ]b4_stack_depth_max[
804 #endif]b4_lac_if([[
805
806 /* Given a state stack such that *YYBOTTOM is its bottom, such that
807 *YYTOP is either its top or is YYTOP_EMPTY to indicate an empty
808 stack, and such that *YYCAPACITY is the maximum number of elements it
809 can hold without a reallocation, make sure there is enough room to
810 store YYADD more elements. If not, allocate a new stack using
811 YYSTACK_ALLOC, copy the existing elements, and adjust *YYBOTTOM,
812 *YYTOP, and *YYCAPACITY to reflect the new capacity and memory
813 location. If *YYBOTTOM != YYBOTTOM_NO_FREE, then free the old stack
814 using YYSTACK_FREE. Return 0 if successful or if no reallocation is
815 required. Return 1 if memory is exhausted. */
816 static int
817 yy_lac_stack_realloc (YYSIZE_T *yycapacity, YYSIZE_T yyadd,
818 #if ]b4_api_PREFIX[DEBUG
819 char const *yydebug_prefix,
820 char const *yydebug_suffix,
821 #endif
822 yytype_int16 **yybottom,
823 yytype_int16 *yybottom_no_free,
824 yytype_int16 **yytop, yytype_int16 *yytop_empty)
825 {
826 YYSIZE_T yysize_old =
827 *yytop == yytop_empty ? 0 : *yytop - *yybottom + 1;
828 YYSIZE_T yysize_new = yysize_old + yyadd;
829 if (*yycapacity < yysize_new)
830 {
831 YYSIZE_T yyalloc = 2 * yysize_new;
832 yytype_int16 *yybottom_new;
833 /* Use YYMAXDEPTH for maximum stack size given that the stack
834 should never need to grow larger than the main state stack
835 needs to grow without LAC. */
836 if (YYMAXDEPTH < yysize_new)
837 {
838 YYDPRINTF ((stderr, "%smax size exceeded%s", yydebug_prefix,
839 yydebug_suffix));
840 return 1;
841 }
842 if (YYMAXDEPTH < yyalloc)
843 yyalloc = YYMAXDEPTH;
844 yybottom_new =
845 (yytype_int16*) YYSTACK_ALLOC (yyalloc * sizeof *yybottom_new);
846 if (!yybottom_new)
847 {
848 YYDPRINTF ((stderr, "%srealloc failed%s", yydebug_prefix,
849 yydebug_suffix));
850 return 1;
851 }
852 if (*yytop != yytop_empty)
853 {
854 YYCOPY (yybottom_new, *yybottom, yysize_old);
855 *yytop = yybottom_new + (yysize_old - 1);
856 }
857 if (*yybottom != yybottom_no_free)
858 YYSTACK_FREE (*yybottom);
859 *yybottom = yybottom_new;
860 *yycapacity = yyalloc;]m4_if(b4_percent_define_get([[parse.lac.memory-trace]]),
861 [full], [[
862 YYDPRINTF ((stderr, "%srealloc to %lu%s", yydebug_prefix,
863 (unsigned long int) yyalloc, yydebug_suffix));]])[
864 }
865 return 0;
866 }
867
868 /* Establish the initial context for the current lookahead if no initial
869 context is currently established.
870
871 We define a context as a snapshot of the parser stacks. We define
872 the initial context for a lookahead as the context in which the
873 parser initially examines that lookahead in order to select a
874 syntactic action. Thus, if the lookahead eventually proves
875 syntactically unacceptable (possibly in a later context reached via a
876 series of reductions), the initial context can be used to determine
877 the exact set of tokens that would be syntactically acceptable in the
878 lookahead's place. Moreover, it is the context after which any
879 further semantic actions would be erroneous because they would be
880 determined by a syntactically unacceptable token.
881
882 YY_LAC_ESTABLISH should be invoked when a reduction is about to be
883 performed in an inconsistent state (which, for the purposes of LAC,
884 includes consistent states that don't know they're consistent because
885 their default reductions have been disabled). Iff there is a
886 lookahead token, it should also be invoked before reporting a syntax
887 error. This latter case is for the sake of the debugging output.
888
889 For parse.lac=full, the implementation of YY_LAC_ESTABLISH is as
890 follows. If no initial context is currently established for the
891 current lookahead, then check if that lookahead can eventually be
892 shifted if syntactic actions continue from the current context.
893 Report a syntax error if it cannot. */
894 #define YY_LAC_ESTABLISH \
895 do { \
896 if (!yy_lac_established) \
897 { \
898 YYDPRINTF ((stderr, \
899 "LAC: initial context established for %s\n", \
900 yytname[yytoken])); \
901 yy_lac_established = 1; \
902 { \
903 int yy_lac_status = \
904 yy_lac (yyesa, &yyes, &yyes_capacity, yyssp, yytoken); \
905 if (yy_lac_status == 2) \
906 goto yyexhaustedlab; \
907 if (yy_lac_status == 1) \
908 goto yyerrlab; \
909 } \
910 } \
911 } while (0)
912
913 /* Discard any previous initial lookahead context because of Event,
914 which may be a lookahead change or an invalidation of the currently
915 established initial context for the current lookahead.
916
917 The most common example of a lookahead change is a shift. An example
918 of both cases is syntax error recovery. That is, a syntax error
919 occurs when the lookahead is syntactically erroneous for the
920 currently established initial context, so error recovery manipulates
921 the parser stacks to try to find a new initial context in which the
922 current lookahead is syntactically acceptable. If it fails to find
923 such a context, it discards the lookahead. */
924 #if ]b4_api_PREFIX[DEBUG
925 # define YY_LAC_DISCARD(Event) \
926 do { \
927 if (yy_lac_established) \
928 { \
929 if (yydebug) \
930 YYFPRINTF (stderr, "LAC: initial context discarded due to " \
931 Event "\n"); \
932 yy_lac_established = 0; \
933 } \
934 } while (0)
935 #else
936 # define YY_LAC_DISCARD(Event) yy_lac_established = 0
937 #endif
938
939 /* Given the stack whose top is *YYSSP, return 0 iff YYTOKEN can
940 eventually (after perhaps some reductions) be shifted, return 1 if
941 not, or return 2 if memory is exhausted. As preconditions and
942 postconditions: *YYES_CAPACITY is the allocated size of the array to
943 which *YYES points, and either *YYES = YYESA or *YYES points to an
944 array allocated with YYSTACK_ALLOC. yy_lac may overwrite the
945 contents of either array, alter *YYES and *YYES_CAPACITY, and free
946 any old *YYES other than YYESA. */
947 static int
948 yy_lac (yytype_int16 *yyesa, yytype_int16 **yyes,
949 YYSIZE_T *yyes_capacity, yytype_int16 *yyssp, int yytoken)
950 {
951 yytype_int16 *yyes_prev = yyssp;
952 yytype_int16 *yyesp = yyes_prev;
953 YYDPRINTF ((stderr, "LAC: checking lookahead %s:", yytname[yytoken]));
954 if (yytoken == YYUNDEFTOK)
955 {
956 YYDPRINTF ((stderr, " Always Err\n"));
957 return 1;
958 }
959 while (1)
960 {
961 int yyrule = yypact[*yyesp];
962 if (yypact_value_is_default (yyrule)
963 || (yyrule += yytoken) < 0 || YYLAST < yyrule
964 || yycheck[yyrule] != yytoken)
965 {
966 yyrule = yydefact[*yyesp];
967 if (yyrule == 0)
968 {
969 YYDPRINTF ((stderr, " Err\n"));
970 return 1;
971 }
972 }
973 else
974 {
975 yyrule = yytable[yyrule];
976 if (yytable_value_is_error (yyrule))
977 {
978 YYDPRINTF ((stderr, " Err\n"));
979 return 1;
980 }
981 if (0 < yyrule)
982 {
983 YYDPRINTF ((stderr, " S%d\n", yyrule));
984 return 0;
985 }
986 yyrule = -yyrule;
987 }
988 {
989 YYSIZE_T yylen = yyr2[yyrule];
990 YYDPRINTF ((stderr, " R%d", yyrule - 1));
991 if (yyesp != yyes_prev)
992 {
993 YYSIZE_T yysize = yyesp - *yyes + 1;
994 if (yylen < yysize)
995 {
996 yyesp -= yylen;
997 yylen = 0;
998 }
999 else
1000 {
1001 yylen -= yysize;
1002 yyesp = yyes_prev;
1003 }
1004 }
1005 if (yylen)
1006 yyesp = yyes_prev -= yylen;
1007 }
1008 {
1009 int yystate;
1010 {
1011 int yylhs = yyr1[yyrule] - YYNTOKENS;
1012 yystate = yypgoto[yylhs] + *yyesp;
1013 if (yystate < 0 || YYLAST < yystate
1014 || yycheck[yystate] != *yyesp)
1015 yystate = yydefgoto[yylhs];
1016 else
1017 yystate = yytable[yystate];
1018 }
1019 if (yyesp == yyes_prev)
1020 {
1021 yyesp = *yyes;
1022 *yyesp = yystate;
1023 }
1024 else
1025 {
1026 if (yy_lac_stack_realloc (yyes_capacity, 1,
1027 #if ]b4_api_PREFIX[DEBUG
1028 " (", ")",
1029 #endif
1030 yyes, yyesa, &yyesp, yyes_prev))
1031 {
1032 YYDPRINTF ((stderr, "\n"));
1033 return 2;
1034 }
1035 *++yyesp = yystate;
1036 }
1037 YYDPRINTF ((stderr, " G%d", yystate));
1038 }
1039 }
1040 }]])[
1041
1042
1043 #if YYERROR_VERBOSE
1044
1045 # ifndef yystrlen
1046 # if defined __GLIBC__ && defined _STRING_H
1047 # define yystrlen strlen
1048 # else
1049 /* Return the length of YYSTR. */
1050 ]b4_function_define([yystrlen], [static YYSIZE_T],
1051 [[const char *yystr], [yystr]])[
1052 {
1053 YYSIZE_T yylen;
1054 for (yylen = 0; yystr[yylen]; yylen++)
1055 continue;
1056 return yylen;
1057 }
1058 # endif
1059 # endif
1060
1061 # ifndef yystpcpy
1062 # if defined __GLIBC__ && defined _STRING_H && defined _GNU_SOURCE
1063 # define yystpcpy stpcpy
1064 # else
1065 /* Copy YYSRC to YYDEST, returning the address of the terminating '\0' in
1066 YYDEST. */
1067 ]b4_function_define([yystpcpy], [static char *],
1068 [[char *yydest], [yydest]], [[const char *yysrc], [yysrc]])[
1069 {
1070 char *yyd = yydest;
1071 const char *yys = yysrc;
1072
1073 while ((*yyd++ = *yys++) != '\0')
1074 continue;
1075
1076 return yyd - 1;
1077 }
1078 # endif
1079 # endif
1080
1081 # ifndef yytnamerr
1082 /* Copy to YYRES the contents of YYSTR after stripping away unnecessary
1083 quotes and backslashes, so that it's suitable for yyerror. The
1084 heuristic is that double-quoting is unnecessary unless the string
1085 contains an apostrophe, a comma, or backslash (other than
1086 backslash-backslash). YYSTR is taken from yytname. If YYRES is
1087 null, do not copy; instead, return the length of what the result
1088 would have been. */
1089 static YYSIZE_T
1090 yytnamerr (char *yyres, const char *yystr)
1091 {
1092 if (*yystr == '"')
1093 {
1094 YYSIZE_T yyn = 0;
1095 char const *yyp = yystr;
1096
1097 for (;;)
1098 switch (*++yyp)
1099 {
1100 case '\'':
1101 case ',':
1102 goto do_not_strip_quotes;
1103
1104 case '\\':
1105 if (*++yyp != '\\')
1106 goto do_not_strip_quotes;
1107 /* Fall through. */
1108 default:
1109 if (yyres)
1110 yyres[yyn] = *yyp;
1111 yyn++;
1112 break;
1113
1114 case '"':
1115 if (yyres)
1116 yyres[yyn] = '\0';
1117 return yyn;
1118 }
1119 do_not_strip_quotes: ;
1120 }
1121
1122 if (! yyres)
1123 return yystrlen (yystr);
1124
1125 return yystpcpy (yyres, yystr) - yyres;
1126 }
1127 # endif
1128
1129 /* Copy into *YYMSG, which is of size *YYMSG_ALLOC, an error message
1130 about the unexpected token YYTOKEN for the state stack whose top is
1131 YYSSP.]b4_lac_if([[ In order to see if a particular token T is a
1132 valid looakhead, invoke yy_lac (YYESA, YYES, YYES_CAPACITY, YYSSP, T).]])[
1133
1134 Return 0 if *YYMSG was successfully written. Return 1 if *YYMSG is
1135 not large enough to hold the message. In that case, also set
1136 *YYMSG_ALLOC to the required number of bytes. Return 2 if the
1137 required number of bytes is too large to store]b4_lac_if([[ or if
1138 yy_lac returned 2]])[. */
1139 static int
1140 yysyntax_error (YYSIZE_T *yymsg_alloc, char **yymsg,
1141 ]b4_lac_if([[yytype_int16 *yyesa, yytype_int16 **yyes,
1142 YYSIZE_T *yyes_capacity, ]])[yytype_int16 *yyssp, int yytoken)
1143 {
1144 YYSIZE_T yysize0 = yytnamerr (YY_NULL, yytname[yytoken]);
1145 YYSIZE_T yysize = yysize0;
1146 enum { YYERROR_VERBOSE_ARGS_MAXIMUM = 5 };
1147 /* Internationalized format string. */
1148 const char *yyformat = YY_NULL;
1149 /* Arguments of yyformat. */
1150 char const *yyarg[YYERROR_VERBOSE_ARGS_MAXIMUM];
1151 /* Number of reported tokens (one for the "unexpected", one per
1152 "expected"). */
1153 int yycount = 0;
1154
1155 /* There are many possibilities here to consider:
1156 - If this state is a consistent state with a default action, then
1157 the only way this function was invoked is if the default action
1158 is an error action. In that case, don't check for expected
1159 tokens because there are none.
1160 - The only way there can be no lookahead present (in yychar) is if
1161 this state is a consistent state with a default action. Thus,
1162 detecting the absence of a lookahead is sufficient to determine
1163 that there is no unexpected or expected token to report. In that
1164 case, just report a simple "syntax error".
1165 - Don't assume there isn't a lookahead just because this state is a
1166 consistent state with a default action. There might have been a
1167 previous inconsistent state, consistent state with a non-default
1168 action, or user semantic action that manipulated yychar.]b4_lac_if([[
1169 In the first two cases, it might appear that the current syntax
1170 error should have been detected in the previous state when yy_lac
1171 was invoked. However, at that time, there might have been a
1172 different syntax error that discarded a different initial context
1173 during error recovery, leaving behind the current lookahead.]], [[
1174 - Of course, the expected token list depends on states to have
1175 correct lookahead information, and it depends on the parser not
1176 to perform extra reductions after fetching a lookahead from the
1177 scanner and before detecting a syntax error. Thus, state merging
1178 (from LALR or IELR) and default reductions corrupt the expected
1179 token list. However, the list is correct for canonical LR with
1180 one exception: it will still contain any token that will not be
1181 accepted due to an error action in a later state.]])[
1182 */
1183 if (yytoken != YYEMPTY)
1184 {
1185 int yyn = yypact[*yyssp];]b4_lac_if([[
1186 YYDPRINTF ((stderr, "Constructing syntax error message\n"));]])[
1187 yyarg[yycount++] = yytname[yytoken];
1188 if (!yypact_value_is_default (yyn))
1189 {]b4_lac_if([], [[
1190 /* Start YYX at -YYN if negative to avoid negative indexes in
1191 YYCHECK. In other words, skip the first -YYN actions for
1192 this state because they are default actions. */
1193 int yyxbegin = yyn < 0 ? -yyn : 0;
1194 /* Stay within bounds of both yycheck and yytname. */
1195 int yychecklim = YYLAST - yyn + 1;
1196 int yyxend = yychecklim < YYNTOKENS ? yychecklim : YYNTOKENS;]])[
1197 int yyx;]b4_lac_if([[
1198
1199 for (yyx = 0; yyx < YYNTOKENS; ++yyx)
1200 if (yyx != YYTERROR && yyx != YYUNDEFTOK)
1201 {
1202 {
1203 int yy_lac_status = yy_lac (yyesa, yyes, yyes_capacity,
1204 yyssp, yyx);
1205 if (yy_lac_status == 2)
1206 return 2;
1207 if (yy_lac_status == 1)
1208 continue;
1209 }]], [[
1210
1211 for (yyx = yyxbegin; yyx < yyxend; ++yyx)
1212 if (yycheck[yyx + yyn] == yyx && yyx != YYTERROR
1213 && !yytable_value_is_error (yytable[yyx + yyn]))
1214 {]])[
1215 if (yycount == YYERROR_VERBOSE_ARGS_MAXIMUM)
1216 {
1217 yycount = 1;
1218 yysize = yysize0;
1219 break;
1220 }
1221 yyarg[yycount++] = yytname[yyx];
1222 {
1223 YYSIZE_T yysize1 = yysize + yytnamerr (YY_NULL, yytname[yyx]);
1224 if (! (yysize <= yysize1
1225 && yysize1 <= YYSTACK_ALLOC_MAXIMUM))
1226 return 2;
1227 yysize = yysize1;
1228 }
1229 }
1230 }]b4_lac_if([[
1231 # if ]b4_api_PREFIX[DEBUG
1232 else if (yydebug)
1233 YYFPRINTF (stderr, "No expected tokens.\n");
1234 # endif]])[
1235 }
1236
1237 switch (yycount)
1238 {
1239 # define YYCASE_(N, S) \
1240 case N: \
1241 yyformat = S; \
1242 break
1243 YYCASE_(0, YY_("syntax error"));
1244 YYCASE_(1, YY_("syntax error, unexpected %s"));
1245 YYCASE_(2, YY_("syntax error, unexpected %s, expecting %s"));
1246 YYCASE_(3, YY_("syntax error, unexpected %s, expecting %s or %s"));
1247 YYCASE_(4, YY_("syntax error, unexpected %s, expecting %s or %s or %s"));
1248 YYCASE_(5, YY_("syntax error, unexpected %s, expecting %s or %s or %s or %s"));
1249 # undef YYCASE_
1250 }
1251
1252 {
1253 YYSIZE_T yysize1 = yysize + yystrlen (yyformat);
1254 if (! (yysize <= yysize1 && yysize1 <= YYSTACK_ALLOC_MAXIMUM))
1255 return 2;
1256 yysize = yysize1;
1257 }
1258
1259 if (*yymsg_alloc < yysize)
1260 {
1261 *yymsg_alloc = 2 * yysize;
1262 if (! (yysize <= *yymsg_alloc
1263 && *yymsg_alloc <= YYSTACK_ALLOC_MAXIMUM))
1264 *yymsg_alloc = YYSTACK_ALLOC_MAXIMUM;
1265 return 1;
1266 }
1267
1268 /* Avoid sprintf, as that infringes on the user's name space.
1269 Don't have undefined behavior even if the translation
1270 produced a string with the wrong number of "%s"s. */
1271 {
1272 char *yyp = *yymsg;
1273 int yyi = 0;
1274 while ((*yyp = *yyformat) != '\0')
1275 if (*yyp == '%' && yyformat[1] == 's' && yyi < yycount)
1276 {
1277 yyp += yytnamerr (yyp, yyarg[yyi++]);
1278 yyformat += 2;
1279 }
1280 else
1281 {
1282 yyp++;
1283 yyformat++;
1284 }
1285 }
1286 return 0;
1287 }
1288 #endif /* YYERROR_VERBOSE */
1289
1290 ]b4_yydestruct_define[
1291
1292 ]b4_pure_if([], [
1293
1294 b4_declare_scanner_communication_variables])[]b4_push_if([[
1295
1296 struct yypstate
1297 {]b4_declare_parser_state_variables[
1298 /* Used to determine if this is the first time this instance has
1299 been used. */
1300 int yynew;
1301 };]b4_pure_if([], [[
1302
1303 static char yypstate_allocated = 0;]])b4_pull_if([
1304
1305 b4_function_define([[yyparse]], [[int]], b4_parse_param)[
1306 {
1307 return yypull_parse (YY_NULL]m4_ifset([b4_parse_param],
1308 [[, ]b4_args(b4_parse_param)])[);
1309 }
1310
1311 ]b4_function_define([[yypull_parse]], [[int]],
1312 [[[yypstate *yyps]], [[yyps]]]m4_ifset([b4_parse_param], [,
1313 b4_parse_param]))[
1314 {
1315 int yystatus;
1316 yypstate *yyps_local;]b4_pure_if([[
1317 int yychar;
1318 YYSTYPE yylval;]b4_locations_if([[
1319 static YYLTYPE yyloc_default][]b4_yyloc_default[;
1320 YYLTYPE yylloc = yyloc_default;]])])[
1321 if (yyps)
1322 yyps_local = yyps;
1323 else
1324 {
1325 yyps_local = yypstate_new ();
1326 if (!yyps_local)
1327 {]b4_pure_if([[
1328 yyerror (]b4_yyerror_args[YY_("memory exhausted"));]], [[
1329 if (!yypstate_allocated)
1330 yyerror (]b4_yyerror_args[YY_("memory exhausted"));]])[
1331 return 2;
1332 }
1333 }
1334 do {
1335 yychar = YYLEX;
1336 yystatus =
1337 yypush_parse (yyps_local]b4_pure_if([[, yychar, &yylval]b4_locations_if([[, &yylloc]])])m4_ifset([b4_parse_param], [, b4_args(b4_parse_param)])[);
1338 } while (yystatus == YYPUSH_MORE);
1339 if (!yyps)
1340 yypstate_delete (yyps_local);
1341 return yystatus;
1342 }]])[
1343
1344 /* Initialize the parser data structure. */
1345 ]b4_function_define([[yypstate_new]], [[yypstate *]])[
1346 {
1347 yypstate *yyps;]b4_pure_if([], [[
1348 if (yypstate_allocated)
1349 return YY_NULL;]])[
1350 yyps = (yypstate *) malloc (sizeof *yyps);
1351 if (!yyps)
1352 return YY_NULL;
1353 yyps->yynew = 1;]b4_pure_if([], [[
1354 yypstate_allocated = 1;]])[
1355 return yyps;
1356 }
1357
1358 ]b4_function_define([[yypstate_delete]], [[void]],
1359 [[[yypstate *yyps]], [[yyps]]])[
1360 {
1361 #ifndef yyoverflow
1362 /* If the stack was reallocated but the parse did not complete, then the
1363 stack still needs to be freed. */
1364 if (!yyps->yynew && yyps->yyss != yyps->yyssa)
1365 YYSTACK_FREE (yyps->yyss);
1366 #endif]b4_lac_if([[
1367 if (!yyps->yynew && yyps->yyes != yyps->yyesa)
1368 YYSTACK_FREE (yyps->yyes);]])[
1369 free (yyps);]b4_pure_if([], [[
1370 yypstate_allocated = 0;]])[
1371 }
1372 ]b4_pure_if([[
1373 #define ]b4_prefix[nerrs yyps->]b4_prefix[nerrs]])[
1374 #define yystate yyps->yystate
1375 #define yyerrstatus yyps->yyerrstatus
1376 #define yyssa yyps->yyssa
1377 #define yyss yyps->yyss
1378 #define yyssp yyps->yyssp
1379 #define yyvsa yyps->yyvsa
1380 #define yyvs yyps->yyvs
1381 #define yyvsp yyps->yyvsp]b4_locations_if([[
1382 #define yylsa yyps->yylsa
1383 #define yyls yyps->yyls
1384 #define yylsp yyps->yylsp
1385 #define yyerror_range yyps->yyerror_range]])[
1386 #define yystacksize yyps->yystacksize]b4_lac_if([[
1387 #define yyesa yyps->yyesa
1388 #define yyes yyps->yyes
1389 #define yyes_capacity yyps->yyes_capacity]])[
1390
1391
1392 /*---------------.
1393 | yypush_parse. |
1394 `---------------*/
1395
1396 ]b4_function_define([[yypush_parse]], [[int]],
1397 [[[yypstate *yyps]], [[yyps]]]b4_pure_if([,
1398 [[[int yypushed_char]], [[yypushed_char]]],
1399 [[[YYSTYPE const *yypushed_val]], [[yypushed_val]]]b4_locations_if([,
1400 [[[YYLTYPE *yypushed_loc]], [[yypushed_loc]]]])])m4_ifset([b4_parse_param], [,
1401 b4_parse_param]))], [[
1402
1403
1404 /*----------.
1405 | yyparse. |
1406 `----------*/
1407
1408 ]b4_function_define([yyparse], [int], b4_parse_param)])[
1409 {]b4_pure_if([b4_declare_scanner_communication_variables
1410 ])b4_push_if([b4_pure_if([], [[
1411 int yypushed_char = yychar;
1412 YYSTYPE yypushed_val = yylval;]b4_locations_if([[
1413 YYLTYPE yypushed_loc = yylloc;]])
1414 ])],
1415 [b4_declare_parser_state_variables
1416 ])b4_lac_if([[
1417 int yy_lac_established = 0;]])[
1418 int yyn;
1419 int yyresult;
1420 /* Lookahead token as an internal (translated) token number. */
1421 int yytoken = 0;
1422 /* The variables used to return semantic value and location from the
1423 action routines. */
1424 YYSTYPE yyval;]b4_locations_if([[
1425 YYLTYPE yyloc;]])[
1426
1427 #if YYERROR_VERBOSE
1428 /* Buffer for error messages, and its allocated size. */
1429 char yymsgbuf[128];
1430 char *yymsg = yymsgbuf;
1431 YYSIZE_T yymsg_alloc = sizeof yymsgbuf;
1432 #endif
1433
1434 #define YYPOPSTACK(N) (yyvsp -= (N), yyssp -= (N)]b4_locations_if([, yylsp -= (N)])[)
1435
1436 /* The number of symbols on the RHS of the reduced rule.
1437 Keep to zero when no symbol should be popped. */
1438 int yylen = 0;]b4_push_if([[
1439
1440 if (!yyps->yynew)
1441 {
1442 yyn = yypact[yystate];
1443 goto yyread_pushed_token;
1444 }]])[
1445
1446 yyssp = yyss = yyssa;
1447 yyvsp = yyvs = yyvsa;]b4_locations_if([[
1448 yylsp = yyls = yylsa;]])[
1449 yystacksize = YYINITDEPTH;]b4_lac_if([[
1450
1451 yyes = yyesa;
1452 yyes_capacity = sizeof yyesa / sizeof *yyes;
1453 if (YYMAXDEPTH < yyes_capacity)
1454 yyes_capacity = YYMAXDEPTH;]])[
1455
1456 YYDPRINTF ((stderr, "Starting parse\n"));
1457
1458 yystate = 0;
1459 yyerrstatus = 0;
1460 yynerrs = 0;
1461 yychar = YYEMPTY; /* Cause a token to be read. */
1462 ]m4_ifdef([b4_initial_action], [
1463 b4_dollar_pushdef([m4_define([b4_dollar_dollar_used])yylval], [],
1464 [b4_push_if([b4_pure_if([*])yypushed_loc], [yylloc])])dnl
1465 /* User initialization code. */
1466 b4_user_initial_action
1467 b4_dollar_popdef[]dnl
1468 m4_ifdef([b4_dollar_dollar_used],[[ yyvsp[0] = yylval;
1469 ]])])dnl
1470 b4_locations_if([[ yylsp[0] = ]b4_push_if([b4_pure_if([*])yypushed_loc], [yylloc])[;
1471 ]])dnl
1472 [ goto yysetstate;
1473
1474 /*------------------------------------------------------------.
1475 | yynewstate -- Push a new state, which is found in yystate. |
1476 `------------------------------------------------------------*/
1477 yynewstate:
1478 /* In all cases, when you get here, the value and location stacks
1479 have just been pushed. So pushing a state here evens the stacks. */
1480 yyssp++;
1481
1482 yysetstate:
1483 *yyssp = yystate;
1484
1485 if (yyss + yystacksize - 1 <= yyssp)
1486 {
1487 /* Get the current used size of the three stacks, in elements. */
1488 YYSIZE_T yysize = yyssp - yyss + 1;
1489
1490 #ifdef yyoverflow
1491 {
1492 /* Give user a chance to reallocate the stack. Use copies of
1493 these so that the &'s don't force the real ones into
1494 memory. */
1495 YYSTYPE *yyvs1 = yyvs;
1496 yytype_int16 *yyss1 = yyss;]b4_locations_if([
1497 YYLTYPE *yyls1 = yyls;])[
1498
1499 /* Each stack pointer address is followed by the size of the
1500 data in use in that stack, in bytes. This used to be a
1501 conditional around just the two extra args, but that might
1502 be undefined if yyoverflow is a macro. */
1503 yyoverflow (YY_("memory exhausted"),
1504 &yyss1, yysize * sizeof (*yyssp),
1505 &yyvs1, yysize * sizeof (*yyvsp),]b4_locations_if([
1506 &yyls1, yysize * sizeof (*yylsp),])[
1507 &yystacksize);
1508 ]b4_locations_if([
1509 yyls = yyls1;])[
1510 yyss = yyss1;
1511 yyvs = yyvs1;
1512 }
1513 #else /* no yyoverflow */
1514 # ifndef YYSTACK_RELOCATE
1515 goto yyexhaustedlab;
1516 # else
1517 /* Extend the stack our own way. */
1518 if (YYMAXDEPTH <= yystacksize)
1519 goto yyexhaustedlab;
1520 yystacksize *= 2;
1521 if (YYMAXDEPTH < yystacksize)
1522 yystacksize = YYMAXDEPTH;
1523
1524 {
1525 yytype_int16 *yyss1 = yyss;
1526 union yyalloc *yyptr =
1527 (union yyalloc *) YYSTACK_ALLOC (YYSTACK_BYTES (yystacksize));
1528 if (! yyptr)
1529 goto yyexhaustedlab;
1530 YYSTACK_RELOCATE (yyss_alloc, yyss);
1531 YYSTACK_RELOCATE (yyvs_alloc, yyvs);]b4_locations_if([
1532 YYSTACK_RELOCATE (yyls_alloc, yyls);])[
1533 # undef YYSTACK_RELOCATE
1534 if (yyss1 != yyssa)
1535 YYSTACK_FREE (yyss1);
1536 }
1537 # endif
1538 #endif /* no yyoverflow */
1539
1540 yyssp = yyss + yysize - 1;
1541 yyvsp = yyvs + yysize - 1;]b4_locations_if([
1542 yylsp = yyls + yysize - 1;])[
1543
1544 YYDPRINTF ((stderr, "Stack size increased to %lu\n",
1545 (unsigned long int) yystacksize));
1546
1547 if (yyss + yystacksize - 1 <= yyssp)
1548 YYABORT;
1549 }
1550
1551 YYDPRINTF ((stderr, "Entering state %d\n", yystate));
1552
1553 if (yystate == YYFINAL)
1554 YYACCEPT;
1555
1556 goto yybackup;
1557
1558 /*-----------.
1559 | yybackup. |
1560 `-----------*/
1561 yybackup:
1562
1563 /* Do appropriate processing given the current state. Read a
1564 lookahead token if we need one and don't already have one. */
1565
1566 /* First try to decide what to do without reference to lookahead token. */
1567 yyn = yypact[yystate];
1568 if (yypact_value_is_default (yyn))
1569 goto yydefault;
1570
1571 /* Not known => get a lookahead token if don't already have one. */
1572
1573 /* YYCHAR is either YYEMPTY or YYEOF or a valid lookahead symbol. */
1574 if (yychar == YYEMPTY)
1575 {]b4_push_if([[
1576 if (!yyps->yynew)
1577 {]b4_use_push_for_pull_if([], [[
1578 YYDPRINTF ((stderr, "Return for a new token:\n"));]])[
1579 yyresult = YYPUSH_MORE;
1580 goto yypushreturn;
1581 }
1582 yyps->yynew = 0;]b4_pure_if([], [[
1583 /* Restoring the pushed token is only necessary for the first
1584 yypush_parse invocation since subsequent invocations don't overwrite
1585 it before jumping to yyread_pushed_token. */
1586 yychar = yypushed_char;
1587 yylval = yypushed_val;]b4_locations_if([[
1588 yylloc = yypushed_loc;]])])[
1589 yyread_pushed_token:]])[
1590 YYDPRINTF ((stderr, "Reading a token: "));]b4_push_if([b4_pure_if([[
1591 yychar = yypushed_char;
1592 if (yypushed_val)
1593 yylval = *yypushed_val;]b4_locations_if([[
1594 if (yypushed_loc)
1595 yylloc = *yypushed_loc;]])])], [[
1596 yychar = YYLEX;]])[
1597 }
1598
1599 if (yychar <= YYEOF)
1600 {
1601 yychar = yytoken = YYEOF;
1602 YYDPRINTF ((stderr, "Now at end of input.\n"));
1603 }
1604 else
1605 {
1606 yytoken = YYTRANSLATE (yychar);
1607 YY_SYMBOL_PRINT ("Next token is", yytoken, &yylval, &yylloc);
1608 }
1609
1610 /* If the proper action on seeing token YYTOKEN is to reduce or to
1611 detect an error, take that action. */
1612 yyn += yytoken;
1613 if (yyn < 0 || YYLAST < yyn || yycheck[yyn] != yytoken)]b4_lac_if([[
1614 {
1615 YY_LAC_ESTABLISH;
1616 goto yydefault;
1617 }]], [[
1618 goto yydefault;]])[
1619 yyn = yytable[yyn];
1620 if (yyn <= 0)
1621 {
1622 if (yytable_value_is_error (yyn))
1623 goto yyerrlab;]b4_lac_if([[
1624 YY_LAC_ESTABLISH;]])[
1625 yyn = -yyn;
1626 goto yyreduce;
1627 }
1628
1629 /* Count tokens shifted since error; after three, turn off error
1630 status. */
1631 if (yyerrstatus)
1632 yyerrstatus--;
1633
1634 /* Shift the lookahead token. */
1635 YY_SYMBOL_PRINT ("Shifting", yytoken, &yylval, &yylloc);
1636
1637 /* Discard the shifted token. */
1638 yychar = YYEMPTY;]b4_lac_if([[
1639 YY_LAC_DISCARD ("shift");]])[
1640
1641 yystate = yyn;
1642 YY_IGNORE_MAYBE_UNINITIALIZED_BEGIN
1643 *++yyvsp = yylval;
1644 YY_IGNORE_MAYBE_UNINITIALIZED_END
1645 ]b4_locations_if([ *++yylsp = yylloc;])[
1646 goto yynewstate;
1647
1648
1649 /*-----------------------------------------------------------.
1650 | yydefault -- do the default action for the current state. |
1651 `-----------------------------------------------------------*/
1652 yydefault:
1653 yyn = yydefact[yystate];
1654 if (yyn == 0)
1655 goto yyerrlab;
1656 goto yyreduce;
1657
1658
1659 /*-----------------------------.
1660 | yyreduce -- Do a reduction. |
1661 `-----------------------------*/
1662 yyreduce:
1663 /* yyn is the number of a rule to reduce with. */
1664 yylen = yyr2[yyn];
1665
1666 /* If YYLEN is nonzero, implement the default value of the action:
1667 `$$ = $1'.
1668
1669 Otherwise, the following line sets YYVAL to garbage.
1670 This behavior is undocumented and Bison
1671 users should not rely upon it. Assigning to YYVAL
1672 unconditionally makes the parser a bit smaller, and it avoids a
1673 GCC warning that YYVAL may be used uninitialized. */
1674 yyval = yyvsp[1-yylen];
1675
1676 ]b4_locations_if(
1677 [[ /* Default location. */
1678 YYLLOC_DEFAULT (yyloc, (yylsp - yylen), yylen);]])[
1679 YY_REDUCE_PRINT (yyn);]b4_lac_if([[
1680 {
1681 int yychar_backup = yychar;
1682 switch (yyn)
1683 {
1684 ]b4_user_actions[
1685 default: break;
1686 }
1687 if (yychar_backup != yychar)
1688 YY_LAC_DISCARD ("yychar change");
1689 }]], [[
1690 switch (yyn)
1691 {
1692 ]b4_user_actions[
1693 default: break;
1694 }]])[
1695 /* User semantic actions sometimes alter yychar, and that requires
1696 that yytoken be updated with the new translation. We take the
1697 approach of translating immediately before every use of yytoken.
1698 One alternative is translating here after every semantic action,
1699 but that translation would be missed if the semantic action invokes
1700 YYABORT, YYACCEPT, or YYERROR immediately after altering yychar or
1701 if it invokes YYBACKUP. In the case of YYABORT or YYACCEPT, an
1702 incorrect destructor might then be invoked immediately. In the
1703 case of YYERROR or YYBACKUP, subsequent parser actions might lead
1704 to an incorrect destructor call or verbose syntax error message
1705 before the lookahead is translated. */
1706 YY_SYMBOL_PRINT ("-> $$ =", yyr1[yyn], &yyval, &yyloc);
1707
1708 YYPOPSTACK (yylen);
1709 yylen = 0;
1710 YY_STACK_PRINT (yyss, yyssp);
1711
1712 *++yyvsp = yyval;]b4_locations_if([
1713 *++yylsp = yyloc;])[
1714
1715 /* Now `shift' the result of the reduction. Determine what state
1716 that goes to, based on the state we popped back to and the rule
1717 number reduced by. */
1718
1719 yyn = yyr1[yyn];
1720
1721 yystate = yypgoto[yyn - YYNTOKENS] + *yyssp;
1722 if (0 <= yystate && yystate <= YYLAST && yycheck[yystate] == *yyssp)
1723 yystate = yytable[yystate];
1724 else
1725 yystate = yydefgoto[yyn - YYNTOKENS];
1726
1727 goto yynewstate;
1728
1729
1730 /*--------------------------------------.
1731 | yyerrlab -- here on detecting error. |
1732 `--------------------------------------*/
1733 yyerrlab:
1734 /* Make sure we have latest lookahead translation. See comments at
1735 user semantic actions for why this is necessary. */
1736 yytoken = yychar == YYEMPTY ? YYEMPTY : YYTRANSLATE (yychar);
1737
1738 /* If not already recovering from an error, report this error. */
1739 if (!yyerrstatus)
1740 {
1741 ++yynerrs;
1742 #if ! YYERROR_VERBOSE
1743 yyerror (]b4_yyerror_args[YY_("syntax error"));
1744 #else
1745 # define YYSYNTAX_ERROR yysyntax_error (&yymsg_alloc, &yymsg, \]b4_lac_if([[
1746 yyesa, &yyes, &yyes_capacity, \]])[
1747 yyssp, yytoken)
1748 {
1749 char const *yymsgp = YY_("syntax error");
1750 int yysyntax_error_status;]b4_lac_if([[
1751 if (yychar != YYEMPTY)
1752 YY_LAC_ESTABLISH;]])[
1753 yysyntax_error_status = YYSYNTAX_ERROR;
1754 if (yysyntax_error_status == 0)
1755 yymsgp = yymsg;
1756 else if (yysyntax_error_status == 1)
1757 {
1758 if (yymsg != yymsgbuf)
1759 YYSTACK_FREE (yymsg);
1760 yymsg = (char *) YYSTACK_ALLOC (yymsg_alloc);
1761 if (!yymsg)
1762 {
1763 yymsg = yymsgbuf;
1764 yymsg_alloc = sizeof yymsgbuf;
1765 yysyntax_error_status = 2;
1766 }
1767 else
1768 {
1769 yysyntax_error_status = YYSYNTAX_ERROR;
1770 yymsgp = yymsg;
1771 }
1772 }
1773 yyerror (]b4_yyerror_args[yymsgp);
1774 if (yysyntax_error_status == 2)
1775 goto yyexhaustedlab;
1776 }
1777 # undef YYSYNTAX_ERROR
1778 #endif
1779 }
1780
1781 ]b4_locations_if([[ yyerror_range[1] = yylloc;]])[
1782
1783 if (yyerrstatus == 3)
1784 {
1785 /* If just tried and failed to reuse lookahead token after an
1786 error, discard it. */
1787
1788 if (yychar <= YYEOF)
1789 {
1790 /* Return failure if at end of input. */
1791 if (yychar == YYEOF)
1792 YYABORT;
1793 }
1794 else
1795 {
1796 yydestruct ("Error: discarding",
1797 yytoken, &yylval]b4_locations_if([, &yylloc])[]b4_user_args[);
1798 yychar = YYEMPTY;
1799 }
1800 }
1801
1802 /* Else will try to reuse lookahead token after shifting the error
1803 token. */
1804 goto yyerrlab1;
1805
1806
1807 /*---------------------------------------------------.
1808 | yyerrorlab -- error raised explicitly by YYERROR. |
1809 `---------------------------------------------------*/
1810 yyerrorlab:
1811
1812 /* Pacify compilers like GCC when the user code never invokes
1813 YYERROR and the label yyerrorlab therefore never appears in user
1814 code. */
1815 if (/*CONSTCOND*/ 0)
1816 goto yyerrorlab;
1817
1818 ]b4_locations_if([[ yyerror_range[1] = yylsp[1-yylen];
1819 ]])[ /* Do not reclaim the symbols of the rule which action triggered
1820 this YYERROR. */
1821 YYPOPSTACK (yylen);
1822 yylen = 0;
1823 YY_STACK_PRINT (yyss, yyssp);
1824 yystate = *yyssp;
1825 goto yyerrlab1;
1826
1827
1828 /*-------------------------------------------------------------.
1829 | yyerrlab1 -- common code for both syntax error and YYERROR. |
1830 `-------------------------------------------------------------*/
1831 yyerrlab1:
1832 yyerrstatus = 3; /* Each real token shifted decrements this. */
1833
1834 for (;;)
1835 {
1836 yyn = yypact[yystate];
1837 if (!yypact_value_is_default (yyn))
1838 {
1839 yyn += YYTERROR;
1840 if (0 <= yyn && yyn <= YYLAST && yycheck[yyn] == YYTERROR)
1841 {
1842 yyn = yytable[yyn];
1843 if (0 < yyn)
1844 break;
1845 }
1846 }
1847
1848 /* Pop the current state because it cannot handle the error token. */
1849 if (yyssp == yyss)
1850 YYABORT;
1851
1852 ]b4_locations_if([[ yyerror_range[1] = *yylsp;]])[
1853 yydestruct ("Error: popping",
1854 yystos[yystate], yyvsp]b4_locations_if([, yylsp])[]b4_user_args[);
1855 YYPOPSTACK (1);
1856 yystate = *yyssp;
1857 YY_STACK_PRINT (yyss, yyssp);
1858 }]b4_lac_if([[
1859
1860 /* If the stack popping above didn't lose the initial context for the
1861 current lookahead token, the shift below will for sure. */
1862 YY_LAC_DISCARD ("error recovery");]])[
1863
1864 YY_IGNORE_MAYBE_UNINITIALIZED_BEGIN
1865 *++yyvsp = yylval;
1866 YY_IGNORE_MAYBE_UNINITIALIZED_END
1867 ]b4_locations_if([[
1868 yyerror_range[2] = yylloc;
1869 /* Using YYLLOC is tempting, but would change the location of
1870 the lookahead. YYLOC is available though. */
1871 YYLLOC_DEFAULT (yyloc, yyerror_range, 2);
1872 *++yylsp = yyloc;]])[
1873
1874 /* Shift the error token. */
1875 YY_SYMBOL_PRINT ("Shifting", yystos[yyn], yyvsp, yylsp);
1876
1877 yystate = yyn;
1878 goto yynewstate;
1879
1880
1881 /*-------------------------------------.
1882 | yyacceptlab -- YYACCEPT comes here. |
1883 `-------------------------------------*/
1884 yyacceptlab:
1885 yyresult = 0;
1886 goto yyreturn;
1887
1888 /*-----------------------------------.
1889 | yyabortlab -- YYABORT comes here. |
1890 `-----------------------------------*/
1891 yyabortlab:
1892 yyresult = 1;
1893 goto yyreturn;
1894
1895 #if ]b4_lac_if([[1]], [[!defined yyoverflow || YYERROR_VERBOSE]])[
1896 /*-------------------------------------------------.
1897 | yyexhaustedlab -- memory exhaustion comes here. |
1898 `-------------------------------------------------*/
1899 yyexhaustedlab:
1900 yyerror (]b4_yyerror_args[YY_("memory exhausted"));
1901 yyresult = 2;
1902 /* Fall through. */
1903 #endif
1904
1905 yyreturn:
1906 if (yychar != YYEMPTY)
1907 {
1908 /* Make sure we have latest lookahead translation. See comments at
1909 user semantic actions for why this is necessary. */
1910 yytoken = YYTRANSLATE (yychar);
1911 yydestruct ("Cleanup: discarding lookahead",
1912 yytoken, &yylval]b4_locations_if([, &yylloc])[]b4_user_args[);
1913 }
1914 /* Do not reclaim the symbols of the rule which action triggered
1915 this YYABORT or YYACCEPT. */
1916 YYPOPSTACK (yylen);
1917 YY_STACK_PRINT (yyss, yyssp);
1918 while (yyssp != yyss)
1919 {
1920 yydestruct ("Cleanup: popping",
1921 yystos[*yyssp], yyvsp]b4_locations_if([, yylsp])[]b4_user_args[);
1922 YYPOPSTACK (1);
1923 }
1924 #ifndef yyoverflow
1925 if (yyss != yyssa)
1926 YYSTACK_FREE (yyss);
1927 #endif]b4_lac_if([[
1928 if (yyes != yyesa)
1929 YYSTACK_FREE (yyes);]])b4_push_if([[
1930 yyps->yynew = 1;
1931
1932 yypushreturn:]])[
1933 #if YYERROR_VERBOSE
1934 if (yymsg != yymsgbuf)
1935 YYSTACK_FREE (yymsg);
1936 #endif
1937 return yyresult;
1938 }
1939 ]b4_epilogue[]dnl
1940 b4_output_end()
1941
1942 b4_defines_if(
1943 [b4_output_begin([b4_spec_defines_file])[
1944 ]b4_copyright([Bison interface for Yacc-like parsers in C])[
1945
1946 ]b4_shared_declarations[
1947 ]b4_output_end()
1948 ])# b4_defines_if
bison