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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], [$1])])])
94
95 # b4_yyerror_args
96 # ---------------
97 # Arguments passed to yyerror: user args plus yylloc.
98 m4_define([b4_yyerror_args],
99 [b4_yyerror_arg_loc_if([&yylloc, ])dnl
100 m4_ifset([b4_parse_param], [b4_args(b4_parse_param), ])])
101
102
103
104 ## ------------ ##
105 ## Data Types. ##
106 ## ------------ ##
107
108 # b4_int_type(MIN, MAX)
109 # ---------------------
110 # Return the smallest int type able to handle numbers ranging from
111 # MIN to MAX (included). Overwrite the version from c.m4, which
112 # uses only C89 types, so that the user can override the shorter
113 # types, and so that pre-C89 compilers are handled correctly.
114 m4_define([b4_int_type],
115 [m4_if(b4_ints_in($@, [0], [255]), [1], [yytype_uint8],
116 b4_ints_in($@, [-128], [127]), [1], [yytype_int8],
117
118 b4_ints_in($@, [0], [65535]), [1], [yytype_uint16],
119 b4_ints_in($@, [-32768], [32767]), [1], [yytype_int16],
120
121 m4_eval([0 <= $1]), [1], [unsigned int],
122
123 [int])])
124
125
126 ## ----------------- ##
127 ## Semantic Values. ##
128 ## ----------------- ##
129
130
131 # b4_lhs_value([TYPE])
132 # --------------------
133 # Expansion of $<TYPE>$.
134 m4_define([b4_lhs_value],
135 [b4_symbol_value(yyval, [$1])])
136
137
138 # b4_rhs_value(RULE-LENGTH, NUM, [TYPE])
139 # --------------------------------------
140 # Expansion of $<TYPE>NUM, where the current rule has RULE-LENGTH
141 # symbols on RHS.
142 m4_define([b4_rhs_value],
143 [b4_symbol_value([yyvsp@{b4_subtract([$2], [$1])@}], [$3])])
144
145
146
147 ## ----------- ##
148 ## Locations. ##
149 ## ----------- ##
150
151 # b4_lhs_location()
152 # -----------------
153 # Expansion of @$.
154 m4_define([b4_lhs_location],
155 [(yyloc)])
156
157
158 # b4_rhs_location(RULE-LENGTH, NUM)
159 # ---------------------------------
160 # Expansion of @NUM, where the current rule has RULE-LENGTH symbols
161 # on RHS.
162 m4_define([b4_rhs_location],
163 [(yylsp@{b4_subtract([$2], [$1])@})])
164
165
166 ## -------------- ##
167 ## Declarations. ##
168 ## -------------- ##
169
170 # b4_declare_scanner_communication_variables
171 # ------------------------------------------
172 # Declare the variables that are global, or local to YYPARSE if
173 # pure-parser.
174 m4_define([b4_declare_scanner_communication_variables], [[
175 /* The lookahead symbol. */
176 int yychar;
177
178 ]b4_pure_if([[
179 #if defined __GNUC__ && 407 <= __GNUC__ * 100 + __GNUC_MINOR__
180 /* Suppress an incorrect diagnostic about yylval being uninitialized. */
181 # define YY_IGNORE_MAYBE_UNINITIALIZED_BEGIN \
182 _Pragma ("GCC diagnostic push") \
183 _Pragma ("GCC diagnostic ignored \"-Wuninitialized\"")\
184 _Pragma ("GCC diagnostic ignored \"-Wmaybe-uninitialized\"")
185 # define YY_IGNORE_MAYBE_UNINITIALIZED_END \
186 _Pragma ("GCC diagnostic pop")
187 #else
188 /* Default value used for initialization, for pacifying older GCCs
189 or non-GCC compilers. */
190 static YYSTYPE yyval_default;
191 # define YY_INITIAL_VALUE(Value) = Value
192 #endif]b4_locations_if([[
193 static YYLTYPE yyloc_default][]b4_yyloc_default[;]])])[
194 #ifndef YY_IGNORE_MAYBE_UNINITIALIZED_BEGIN
195 # define YY_IGNORE_MAYBE_UNINITIALIZED_BEGIN
196 # define YY_IGNORE_MAYBE_UNINITIALIZED_END
197 #endif
198 #ifndef YY_INITIAL_VALUE
199 # define YY_INITIAL_VALUE(Value) /* Nothing. */
200 #endif
201
202 /* The semantic value of the lookahead symbol. */
203 YYSTYPE yylval YY_INITIAL_VALUE(yyval_default);]b4_locations_if([[
204
205 /* Location data for the lookahead symbol. */
206 YYLTYPE yylloc]b4_pure_if([ = yyloc_default], [b4_yyloc_default])[;
207 ]])b4_pure_if([], [[
208
209 /* Number of syntax errors so far. */
210 int yynerrs;]])])
211
212
213 # b4_declare_parser_state_variables
214 # ---------------------------------
215 # Declare all the variables that are needed to maintain the parser state
216 # between calls to yypush_parse.
217 m4_define([b4_declare_parser_state_variables], [b4_pure_if([[
218 /* Number of syntax errors so far. */
219 int yynerrs;
220 ]])[
221 int yystate;
222 /* Number of tokens to shift before error messages enabled. */
223 int yyerrstatus;
224
225 /* The stacks and their tools:
226 `yyss': related to states.
227 `yyvs': related to semantic values.]b4_locations_if([[
228 `yyls': related to locations.]])[
229
230 Refer to the stacks through separate pointers, to allow yyoverflow
231 to reallocate them elsewhere. */
232
233 /* The state stack. */
234 yytype_int16 yyssa[YYINITDEPTH];
235 yytype_int16 *yyss;
236 yytype_int16 *yyssp;
237
238 /* The semantic value stack. */
239 YYSTYPE yyvsa[YYINITDEPTH];
240 YYSTYPE *yyvs;
241 YYSTYPE *yyvsp;]b4_locations_if([[
242
243 /* The location stack. */
244 YYLTYPE yylsa[YYINITDEPTH];
245 YYLTYPE *yyls;
246 YYLTYPE *yylsp;
247
248 /* The locations where the error started and ended. */
249 YYLTYPE yyerror_range[3];]])[
250
251 YYSIZE_T yystacksize;]b4_lac_if([[
252
253 yytype_int16 yyesa@{]b4_percent_define_get([[parse.lac.es-capacity-initial]])[@};
254 yytype_int16 *yyes;
255 YYSIZE_T yyes_capacity;]])])
256
257
258 # b4_declare_yyparse_push_
259 # ------------------------
260 # Declaration of yyparse (and dependencies) when using the push parser
261 # (including in pull mode).
262 m4_define([b4_declare_yyparse_push_],
263 [[#ifndef YYPUSH_MORE_DEFINED
264 # define YYPUSH_MORE_DEFINED
265 enum { YYPUSH_MORE = 4 };
266 #endif
267
268 typedef struct ]b4_prefix[pstate ]b4_prefix[pstate;
269
270 ]b4_pull_if([b4_function_declare([b4_prefix[parse]], [[int]], b4_parse_param)
271 ])b4_function_declare([b4_prefix[push_parse]], [[int]],
272 [[b4_prefix[pstate *ps]], [[ps]]]b4_pure_if([,
273 [[[int pushed_char]], [[pushed_char]]],
274 [[b4_api_PREFIX[STYPE const *pushed_val]], [[pushed_val]]]b4_locations_if([,
275 [[b4_api_PREFIX[LTYPE *pushed_loc]], [[pushed_loc]]]])])m4_ifset([b4_parse_param], [,
276 b4_parse_param]))
277 b4_pull_if([b4_function_declare([b4_prefix[pull_parse]], [[int]],
278 [[b4_prefix[pstate *ps]], [[ps]]]m4_ifset([b4_parse_param], [,
279 b4_parse_param]))])
280 b4_function_declare([b4_prefix[pstate_new]], [b4_prefix[pstate *]],
281 [[[void]], []])
282 b4_function_declare([b4_prefix[pstate_delete]], [[void]],
283 [[b4_prefix[pstate *ps]], [[ps]]])dnl
284 ])
285
286 # b4_declare_yyparse_
287 # -------------------
288 # When not the push parser.
289 m4_define([b4_declare_yyparse_],
290 [b4_function_declare(b4_prefix[parse], [int], b4_parse_param)])
291
292
293 # b4_declare_yyparse
294 # ------------------
295 m4_define([b4_declare_yyparse],
296 [b4_push_if([b4_declare_yyparse_push_],
297 [b4_declare_yyparse_])[]dnl
298 ])
299
300
301 # b4_shared_declarations
302 # ----------------------
303 # Declaration that might either go into the header (if --defines)
304 # or open coded in the parser body.
305 m4_define([b4_shared_declarations],
306 [b4_cpp_guard_open([b4_spec_defines_file])[
307 ]b4_declare_yydebug[
308 ]b4_percent_code_get([[requires]])[
309 ]b4_token_enums_defines[
310 ]b4_declare_yylstype[
311 ]b4_declare_yyparse[
312 ]b4_percent_code_get([[provides]])[
313 ]b4_cpp_guard_close([b4_spec_defines_file])[]dnl
314 ])
315
316 ## -------------- ##
317 ## Output files. ##
318 ## -------------- ##
319
320 b4_output_begin([b4_parser_file_name])
321 b4_copyright([Bison implementation for Yacc-like parsers in C])[
322
323 /* C LALR(1) parser skeleton written by Richard Stallman, by
324 simplifying the original so-called "semantic" parser. */
325
326 /* All symbols defined below should begin with yy or YY, to avoid
327 infringing on user name space. This should be done even for local
328 variables, as they might otherwise be expanded by user macros.
329 There are some unavoidable exceptions within include files to
330 define necessary library symbols; they are noted "INFRINGES ON
331 USER NAME SPACE" below. */
332
333 ]b4_identification
334 b4_percent_code_get([[top]])[]dnl
335 m4_if(b4_api_prefix, [yy], [],
336 [[/* Substitute the type names. */
337 #define YYSTYPE ]b4_api_PREFIX[STYPE]b4_locations_if([[
338 #define YYLTYPE ]b4_api_PREFIX[LTYPE]])])[
339 ]m4_if(b4_prefix, [yy], [],
340 [[/* Substitute the variable and function names. */]b4_pull_if([[
341 #define yyparse ]b4_prefix[parse]])b4_push_if([[
342 #define yypush_parse ]b4_prefix[push_parse]b4_pull_if([[
343 #define yypull_parse ]b4_prefix[pull_parse]])[
344 #define yypstate_new ]b4_prefix[pstate_new
345 #define yypstate_delete ]b4_prefix[pstate_delete
346 #define yypstate ]b4_prefix[pstate]])[
347 #define yylex ]b4_prefix[lex
348 #define yyerror ]b4_prefix[error
349 #define yylval ]b4_prefix[lval
350 #define yychar ]b4_prefix[char
351 #define yydebug ]b4_prefix[debug
352 #define yynerrs ]b4_prefix[nerrs]b4_locations_if([[
353 #define yylloc ]b4_prefix[lloc]])])[
354
355 /* Copy the first part of user declarations. */
356 ]b4_user_pre_prologue[
357
358 ]b4_null_define[
359
360 /* Enabling verbose error messages. */
361 #ifdef YYERROR_VERBOSE
362 # undef YYERROR_VERBOSE
363 # define YYERROR_VERBOSE 1
364 #else
365 # define YYERROR_VERBOSE ]b4_error_verbose_if([1], [0])[
366 #endif
367
368 ]m4_ifval(m4_quote(b4_spec_defines_file),
369 [[/* In a future release of Bison, this section will be replaced
370 by #include "@basename(]b4_spec_defines_file[@)". */
371 ]])dnl
372 b4_shared_declarations[
373
374 /* Copy the second part of user declarations. */
375 ]b4_user_post_prologue
376 b4_percent_code_get[]dnl
377
378 [#ifdef short
379 # undef short
380 #endif
381
382 #ifdef YYTYPE_UINT8
383 typedef YYTYPE_UINT8 yytype_uint8;
384 #else
385 typedef unsigned char yytype_uint8;
386 #endif
387
388 #ifdef YYTYPE_INT8
389 typedef YYTYPE_INT8 yytype_int8;
390 #else
391 typedef signed char yytype_int8;
392 #endif
393
394 #ifdef YYTYPE_UINT16
395 typedef YYTYPE_UINT16 yytype_uint16;
396 #else
397 typedef unsigned short int yytype_uint16;
398 #endif
399
400 #ifdef YYTYPE_INT16
401 typedef YYTYPE_INT16 yytype_int16;
402 #else
403 typedef short int yytype_int16;
404 #endif
405
406 #ifndef YYSIZE_T
407 # ifdef __SIZE_TYPE__
408 # define YYSIZE_T __SIZE_TYPE__
409 # elif defined size_t
410 # define YYSIZE_T size_t
411 # elif ! defined YYSIZE_T
412 # include <stddef.h> /* INFRINGES ON USER NAME SPACE */
413 # define YYSIZE_T size_t
414 # else
415 # define YYSIZE_T unsigned int
416 # endif
417 #endif
418
419 #define YYSIZE_MAXIMUM ((YYSIZE_T) -1)
420
421 #ifndef YY_
422 # if defined YYENABLE_NLS && YYENABLE_NLS
423 # if ENABLE_NLS
424 # include <libintl.h> /* INFRINGES ON USER NAME SPACE */
425 # define YY_(Msgid) dgettext ("bison-runtime", Msgid)
426 # endif
427 # endif
428 # ifndef YY_
429 # define YY_(Msgid) Msgid
430 # endif
431 #endif
432
433 /* Suppress unused-variable warnings by "using" E. */
434 #ifdef __GNUC__
435 # define YYUSE(E) ((void) (E))
436 #else
437 # define YYUSE(E) /* empty */
438 #endif
439
440 #if ]b4_lac_if([[1]], [[! defined yyoverflow || YYERROR_VERBOSE]])[
441
442 /* The parser invokes alloca or malloc; define the necessary symbols. */]dnl
443 b4_push_if([], [b4_lac_if([], [[
444
445 # ifdef YYSTACK_USE_ALLOCA
446 # if YYSTACK_USE_ALLOCA
447 # ifdef __GNUC__
448 # define YYSTACK_ALLOC __builtin_alloca
449 # elif defined __BUILTIN_VA_ARG_INCR
450 # include <alloca.h> /* INFRINGES ON USER NAME SPACE */
451 # elif defined _AIX
452 # define YYSTACK_ALLOC __alloca
453 # elif defined _MSC_VER
454 # include <malloc.h> /* INFRINGES ON USER NAME SPACE */
455 # define alloca _alloca
456 # else
457 # define YYSTACK_ALLOC alloca
458 # if ! defined _ALLOCA_H && ! defined EXIT_SUCCESS
459 # include <stdlib.h> /* INFRINGES ON USER NAME SPACE */
460 /* Use EXIT_SUCCESS as a witness for stdlib.h. */
461 # ifndef EXIT_SUCCESS
462 # define EXIT_SUCCESS 0
463 # endif
464 # endif
465 # endif
466 # endif
467 # endif]])])[
468
469 # ifdef YYSTACK_ALLOC
470 /* Pacify GCC's `empty if-body' warning. */
471 # define YYSTACK_FREE(Ptr) do { /* empty */; } while (0)
472 # ifndef YYSTACK_ALLOC_MAXIMUM
473 /* The OS might guarantee only one guard page at the bottom of the stack,
474 and a page size can be as small as 4096 bytes. So we cannot safely
475 invoke alloca (N) if N exceeds 4096. Use a slightly smaller number
476 to allow for a few compiler-allocated temporary stack slots. */
477 # define YYSTACK_ALLOC_MAXIMUM 4032 /* reasonable circa 2006 */
478 # endif
479 # else
480 # define YYSTACK_ALLOC YYMALLOC
481 # define YYSTACK_FREE YYFREE
482 # ifndef YYSTACK_ALLOC_MAXIMUM
483 # define YYSTACK_ALLOC_MAXIMUM YYSIZE_MAXIMUM
484 # endif
485 # if (defined __cplusplus && ! defined EXIT_SUCCESS \
486 && ! ((defined YYMALLOC || defined malloc) \
487 && (defined YYFREE || defined free)))
488 # include <stdlib.h> /* INFRINGES ON USER NAME SPACE */
489 # ifndef EXIT_SUCCESS
490 # define EXIT_SUCCESS 0
491 # endif
492 # endif
493 # ifndef YYMALLOC
494 # define YYMALLOC malloc
495 # if ! defined malloc && ! defined EXIT_SUCCESS
496 void *malloc (YYSIZE_T); /* INFRINGES ON USER NAME SPACE */
497 # endif
498 # endif
499 # ifndef YYFREE
500 # define YYFREE free
501 # if ! defined free && ! defined EXIT_SUCCESS
502 void free (void *); /* INFRINGES ON USER NAME SPACE */
503 # endif
504 # endif
505 # endif]b4_lac_if([[
506 # define YYCOPY_NEEDED 1]])[
507 #endif]b4_lac_if([], [[ /* ! defined yyoverflow || YYERROR_VERBOSE */]])[
508
509
510 #if (! defined yyoverflow \
511 && (! defined __cplusplus \
512 || (]b4_locations_if([[defined ]b4_api_PREFIX[LTYPE_IS_TRIVIAL && ]b4_api_PREFIX[LTYPE_IS_TRIVIAL \
513 && ]])[defined ]b4_api_PREFIX[STYPE_IS_TRIVIAL && ]b4_api_PREFIX[STYPE_IS_TRIVIAL)))
514
515 /* A type that is properly aligned for any stack member. */
516 union yyalloc
517 {
518 yytype_int16 yyss_alloc;
519 YYSTYPE yyvs_alloc;]b4_locations_if([
520 YYLTYPE yyls_alloc;])[
521 };
522
523 /* The size of the maximum gap between one aligned stack and the next. */
524 # define YYSTACK_GAP_MAXIMUM (sizeof (union yyalloc) - 1)
525
526 /* The size of an array large to enough to hold all stacks, each with
527 N elements. */
528 ]b4_locations_if(
529 [# define YYSTACK_BYTES(N) \
530 ((N) * (sizeof (yytype_int16) + sizeof (YYSTYPE) + sizeof (YYLTYPE)) \
531 + 2 * YYSTACK_GAP_MAXIMUM)],
532 [# define YYSTACK_BYTES(N) \
533 ((N) * (sizeof (yytype_int16) + sizeof (YYSTYPE)) \
534 + YYSTACK_GAP_MAXIMUM)])[
535
536 # define YYCOPY_NEEDED 1
537
538 /* Relocate STACK from its old location to the new one. The
539 local variables YYSIZE and YYSTACKSIZE give the old and new number of
540 elements in the stack, and YYPTR gives the new location of the
541 stack. Advance YYPTR to a properly aligned location for the next
542 stack. */
543 # define YYSTACK_RELOCATE(Stack_alloc, Stack) \
544 do \
545 { \
546 YYSIZE_T yynewbytes; \
547 YYCOPY (&yyptr->Stack_alloc, Stack, yysize); \
548 Stack = &yyptr->Stack_alloc; \
549 yynewbytes = yystacksize * sizeof (*Stack) + YYSTACK_GAP_MAXIMUM; \
550 yyptr += yynewbytes / sizeof (*yyptr); \
551 } \
552 while (0)
553
554 #endif
555
556 #if defined YYCOPY_NEEDED && YYCOPY_NEEDED
557 /* Copy COUNT objects from SRC to DST. The source and destination do
558 not overlap. */
559 # ifndef YYCOPY
560 # if defined __GNUC__ && 1 < __GNUC__
561 # define YYCOPY(Dst, Src, Count) \
562 __builtin_memcpy (Dst, Src, (Count) * sizeof (*(Src)))
563 # else
564 # define YYCOPY(Dst, Src, Count) \
565 do \
566 { \
567 YYSIZE_T yyi; \
568 for (yyi = 0; yyi < (Count); yyi++) \
569 (Dst)[yyi] = (Src)[yyi]; \
570 } \
571 while (0)
572 # endif
573 # endif
574 #endif /* !YYCOPY_NEEDED */
575
576 /* YYFINAL -- State number of the termination state. */
577 #define YYFINAL ]b4_final_state_number[
578 /* YYLAST -- Last index in YYTABLE. */
579 #define YYLAST ]b4_last[
580
581 /* YYNTOKENS -- Number of terminals. */
582 #define YYNTOKENS ]b4_tokens_number[
583 /* YYNNTS -- Number of nonterminals. */
584 #define YYNNTS ]b4_nterms_number[
585 /* YYNRULES -- Number of rules. */
586 #define YYNRULES ]b4_rules_number[
587 /* YYNSTATES -- Number of states. */
588 #define YYNSTATES ]b4_states_number[
589
590 /* YYTRANSLATE[YYX] -- Symbol number corresponding to YYX as returned
591 by yylex, with out-of-bounds checking. */
592 #define YYUNDEFTOK ]b4_undef_token_number[
593 #define YYMAXUTOK ]b4_user_token_number_max[
594
595 #define YYTRANSLATE(YYX) \
596 ((unsigned int) (YYX) <= YYMAXUTOK ? yytranslate[YYX] : YYUNDEFTOK)
597
598 /* YYTRANSLATE[TOKEN-NUM] -- Symbol number corresponding to TOKEN-NUM
599 as returned by yylex, without out-of-bounds checking. */
600 static const ]b4_int_type_for([b4_translate])[ yytranslate[] =
601 {
602 ]b4_translate[
603 };
604
605 #if ]b4_api_PREFIX[DEBUG
606 ]b4_integral_parser_table_define([rline], [b4_rline],
607 [[YYRLINE[YYN] -- Source line where rule number YYN was defined.]])[
608 #endif
609
610 #if ]b4_api_PREFIX[DEBUG || YYERROR_VERBOSE || ]b4_token_table_flag[
611 /* YYTNAME[SYMBOL-NUM] -- String name of the symbol SYMBOL-NUM.
612 First, the terminals, then, starting at YYNTOKENS, nonterminals. */
613 static const char *const yytname[] =
614 {
615 ]b4_tname[
616 };
617 #endif
618
619 # ifdef YYPRINT
620 /* YYTOKNUM[NUM] -- (External) token number corresponding to the
621 (internal) symbol number NUM (which must be that of a token). */
622 static const ]b4_int_type_for([b4_toknum])[ yytoknum[] =
623 {
624 ]b4_toknum[
625 };
626 # endif
627
628 #define YYPACT_NINF ]b4_pact_ninf[
629
630 #define yypact_value_is_default(Yystate) \
631 ]b4_table_value_equals([[pact]], [[Yystate]], [b4_pact_ninf])[
632
633 #define YYTABLE_NINF ]b4_table_ninf[
634
635 #define yytable_value_is_error(Yytable_value) \
636 ]b4_table_value_equals([[table]], [[Yytable_value]], [b4_table_ninf])[
637
638 ]b4_parser_tables_define[
639
640 #define yyerrok (yyerrstatus = 0)
641 #define yyclearin (yychar = YYEMPTY)
642 #define YYEMPTY (-2)
643 #define YYEOF 0
644
645 #define YYACCEPT goto yyacceptlab
646 #define YYABORT goto yyabortlab
647 #define YYERROR goto yyerrorlab
648
649
650 #define YYRECOVERING() (!!yyerrstatus)
651
652 #define YYBACKUP(Token, Value) \
653 do \
654 if (yychar == YYEMPTY) \
655 { \
656 yychar = (Token); \
657 yylval = (Value); \
658 YYPOPSTACK (yylen); \
659 yystate = *yyssp; \]b4_lac_if([[
660 YY_LAC_DISCARD ("YYBACKUP"); \]])[
661 goto yybackup; \
662 } \
663 else \
664 { \
665 yyerror (]b4_yyerror_args[YY_("syntax error: cannot back up")); \
666 YYERROR; \
667 } \
668 while (0)
669
670 /* Error token number */
671 #define YYTERROR 1
672 #define YYERRCODE 256
673
674 ]b4_locations_if([[
675 ]b4_yylloc_default_define[
676 #define YYRHSLOC(Rhs, K) ((Rhs)[K])
677 ]])[
678 ]b4_yy_location_print_define[
679
680 /* Enable debugging if requested. */
681 #if ]b4_api_PREFIX[DEBUG
682
683 # ifndef YYFPRINTF
684 # include <stdio.h> /* INFRINGES ON USER NAME SPACE */
685 # define YYFPRINTF fprintf
686 # endif
687
688 # define YYDPRINTF(Args) \
689 do { \
690 if (yydebug) \
691 YYFPRINTF Args; \
692 } while (0)
693
694 # define YY_SYMBOL_PRINT(Title, Type, Value, Location) \
695 do { \
696 if (yydebug) \
697 { \
698 YYFPRINTF (stderr, "%s ", Title); \
699 yy_symbol_print (stderr, \
700 Type, Value]b4_locations_if([, Location])[]b4_user_args[); \
701 YYFPRINTF (stderr, "\n"); \
702 } \
703 } while (0)
704
705 ]b4_yy_symbol_print_define[
706
707 /*------------------------------------------------------------------.
708 | yy_stack_print -- Print the state stack from its BOTTOM up to its |
709 | TOP (included). |
710 `------------------------------------------------------------------*/
711
712 ]b4_function_define([yy_stack_print], [static void],
713 [[yytype_int16 *yybottom], [yybottom]],
714 [[yytype_int16 *yytop], [yytop]])[
715 {
716 YYFPRINTF (stderr, "Stack now");
717 for (; yybottom <= yytop; yybottom++)
718 {
719 int yybot = *yybottom;
720 YYFPRINTF (stderr, " %d", yybot);
721 }
722 YYFPRINTF (stderr, "\n");
723 }
724
725 # define YY_STACK_PRINT(Bottom, Top) \
726 do { \
727 if (yydebug) \
728 yy_stack_print ((Bottom), (Top)); \
729 } while (0)
730
731
732 /*------------------------------------------------.
733 | Report that the YYRULE is going to be reduced. |
734 `------------------------------------------------*/
735
736 ]b4_function_define([yy_reduce_print], [static void],
737 [[yytype_int16 *yyssp], [yyssp]],
738 [[YYSTYPE *yyvsp], [yyvsp]],
739 b4_locations_if([[[YYLTYPE *yylsp], [yylsp]],
740 ])[[int yyrule], [yyrule]]m4_ifset([b4_parse_param], [,
741 b4_parse_param]))[
742 {
743 unsigned long int yylno = yyrline[yyrule];
744 int yynrhs = yyr2[yyrule];
745 int yyi;
746 YYFPRINTF (stderr, "Reducing stack by rule %d (line %lu):\n",
747 yyrule - 1, yylno);
748 /* The symbols being reduced. */
749 for (yyi = 0; yyi < yynrhs; yyi++)
750 {
751 YYFPRINTF (stderr, " $%d = ", yyi + 1);
752 yy_symbol_print (stderr,
753 yystos[yyssp[yyi + 1 - yynrhs]],
754 &]b4_rhs_value(yynrhs, yyi + 1)[
755 ]b4_locations_if([, &]b4_rhs_location(yynrhs, yyi + 1))[]dnl
756 b4_user_args[);
757 YYFPRINTF (stderr, "\n");
758 }
759 }
760
761 # define YY_REDUCE_PRINT(Rule) \
762 do { \
763 if (yydebug) \
764 yy_reduce_print (yyssp, yyvsp, ]b4_locations_if([yylsp, ])[Rule]b4_user_args[); \
765 } while (0)
766
767 /* Nonzero means print parse trace. It is left uninitialized so that
768 multiple parsers can coexist. */
769 int yydebug;
770 #else /* !]b4_api_PREFIX[DEBUG */
771 # define YYDPRINTF(Args)
772 # define YY_SYMBOL_PRINT(Title, Type, Value, Location)
773 # define YY_STACK_PRINT(Bottom, Top)
774 # define YY_REDUCE_PRINT(Rule)
775 #endif /* !]b4_api_PREFIX[DEBUG */
776
777
778 /* YYINITDEPTH -- initial size of the parser's stacks. */
779 #ifndef YYINITDEPTH
780 # define YYINITDEPTH ]b4_stack_depth_init[
781 #endif
782
783 /* YYMAXDEPTH -- maximum size the stacks can grow to (effective only
784 if the built-in stack extension method is used).
785
786 Do not make this value too large; the results are undefined if
787 YYSTACK_ALLOC_MAXIMUM < YYSTACK_BYTES (YYMAXDEPTH)
788 evaluated with infinite-precision integer arithmetic. */
789
790 #ifndef YYMAXDEPTH
791 # define YYMAXDEPTH ]b4_stack_depth_max[
792 #endif]b4_lac_if([[
793
794 /* Given a state stack such that *YYBOTTOM is its bottom, such that
795 *YYTOP is either its top or is YYTOP_EMPTY to indicate an empty
796 stack, and such that *YYCAPACITY is the maximum number of elements it
797 can hold without a reallocation, make sure there is enough room to
798 store YYADD more elements. If not, allocate a new stack using
799 YYSTACK_ALLOC, copy the existing elements, and adjust *YYBOTTOM,
800 *YYTOP, and *YYCAPACITY to reflect the new capacity and memory
801 location. If *YYBOTTOM != YYBOTTOM_NO_FREE, then free the old stack
802 using YYSTACK_FREE. Return 0 if successful or if no reallocation is
803 required. Return 1 if memory is exhausted. */
804 static int
805 yy_lac_stack_realloc (YYSIZE_T *yycapacity, YYSIZE_T yyadd,
806 #if ]b4_api_PREFIX[DEBUG
807 char const *yydebug_prefix,
808 char const *yydebug_suffix,
809 #endif
810 yytype_int16 **yybottom,
811 yytype_int16 *yybottom_no_free,
812 yytype_int16 **yytop, yytype_int16 *yytop_empty)
813 {
814 YYSIZE_T yysize_old =
815 *yytop == yytop_empty ? 0 : *yytop - *yybottom + 1;
816 YYSIZE_T yysize_new = yysize_old + yyadd;
817 if (*yycapacity < yysize_new)
818 {
819 YYSIZE_T yyalloc = 2 * yysize_new;
820 yytype_int16 *yybottom_new;
821 /* Use YYMAXDEPTH for maximum stack size given that the stack
822 should never need to grow larger than the main state stack
823 needs to grow without LAC. */
824 if (YYMAXDEPTH < yysize_new)
825 {
826 YYDPRINTF ((stderr, "%smax size exceeded%s", yydebug_prefix,
827 yydebug_suffix));
828 return 1;
829 }
830 if (YYMAXDEPTH < yyalloc)
831 yyalloc = YYMAXDEPTH;
832 yybottom_new =
833 (yytype_int16*) YYSTACK_ALLOC (yyalloc * sizeof *yybottom_new);
834 if (!yybottom_new)
835 {
836 YYDPRINTF ((stderr, "%srealloc failed%s", yydebug_prefix,
837 yydebug_suffix));
838 return 1;
839 }
840 if (*yytop != yytop_empty)
841 {
842 YYCOPY (yybottom_new, *yybottom, yysize_old);
843 *yytop = yybottom_new + (yysize_old - 1);
844 }
845 if (*yybottom != yybottom_no_free)
846 YYSTACK_FREE (*yybottom);
847 *yybottom = yybottom_new;
848 *yycapacity = yyalloc;]m4_if(b4_percent_define_get([[parse.lac.memory-trace]]),
849 [full], [[
850 YYDPRINTF ((stderr, "%srealloc to %lu%s", yydebug_prefix,
851 (unsigned long int) yyalloc, yydebug_suffix));]])[
852 }
853 return 0;
854 }
855
856 /* Establish the initial context for the current lookahead if no initial
857 context is currently established.
858
859 We define a context as a snapshot of the parser stacks. We define
860 the initial context for a lookahead as the context in which the
861 parser initially examines that lookahead in order to select a
862 syntactic action. Thus, if the lookahead eventually proves
863 syntactically unacceptable (possibly in a later context reached via a
864 series of reductions), the initial context can be used to determine
865 the exact set of tokens that would be syntactically acceptable in the
866 lookahead's place. Moreover, it is the context after which any
867 further semantic actions would be erroneous because they would be
868 determined by a syntactically unacceptable token.
869
870 YY_LAC_ESTABLISH should be invoked when a reduction is about to be
871 performed in an inconsistent state (which, for the purposes of LAC,
872 includes consistent states that don't know they're consistent because
873 their default reductions have been disabled). Iff there is a
874 lookahead token, it should also be invoked before reporting a syntax
875 error. This latter case is for the sake of the debugging output.
876
877 For parse.lac=full, the implementation of YY_LAC_ESTABLISH is as
878 follows. If no initial context is currently established for the
879 current lookahead, then check if that lookahead can eventually be
880 shifted if syntactic actions continue from the current context.
881 Report a syntax error if it cannot. */
882 #define YY_LAC_ESTABLISH \
883 do { \
884 if (!yy_lac_established) \
885 { \
886 YYDPRINTF ((stderr, \
887 "LAC: initial context established for %s\n", \
888 yytname[yytoken])); \
889 yy_lac_established = 1; \
890 { \
891 int yy_lac_status = \
892 yy_lac (yyesa, &yyes, &yyes_capacity, yyssp, yytoken); \
893 if (yy_lac_status == 2) \
894 goto yyexhaustedlab; \
895 if (yy_lac_status == 1) \
896 goto yyerrlab; \
897 } \
898 } \
899 } while (0)
900
901 /* Discard any previous initial lookahead context because of Event,
902 which may be a lookahead change or an invalidation of the currently
903 established initial context for the current lookahead.
904
905 The most common example of a lookahead change is a shift. An example
906 of both cases is syntax error recovery. That is, a syntax error
907 occurs when the lookahead is syntactically erroneous for the
908 currently established initial context, so error recovery manipulates
909 the parser stacks to try to find a new initial context in which the
910 current lookahead is syntactically acceptable. If it fails to find
911 such a context, it discards the lookahead. */
912 #if ]b4_api_PREFIX[DEBUG
913 # define YY_LAC_DISCARD(Event) \
914 do { \
915 if (yy_lac_established) \
916 { \
917 if (yydebug) \
918 YYFPRINTF (stderr, "LAC: initial context discarded due to " \
919 Event "\n"); \
920 yy_lac_established = 0; \
921 } \
922 } while (0)
923 #else
924 # define YY_LAC_DISCARD(Event) yy_lac_established = 0
925 #endif
926
927 /* Given the stack whose top is *YYSSP, return 0 iff YYTOKEN can
928 eventually (after perhaps some reductions) be shifted, return 1 if
929 not, or return 2 if memory is exhausted. As preconditions and
930 postconditions: *YYES_CAPACITY is the allocated size of the array to
931 which *YYES points, and either *YYES = YYESA or *YYES points to an
932 array allocated with YYSTACK_ALLOC. yy_lac may overwrite the
933 contents of either array, alter *YYES and *YYES_CAPACITY, and free
934 any old *YYES other than YYESA. */
935 static int
936 yy_lac (yytype_int16 *yyesa, yytype_int16 **yyes,
937 YYSIZE_T *yyes_capacity, yytype_int16 *yyssp, int yytoken)
938 {
939 yytype_int16 *yyes_prev = yyssp;
940 yytype_int16 *yyesp = yyes_prev;
941 YYDPRINTF ((stderr, "LAC: checking lookahead %s:", yytname[yytoken]));
942 if (yytoken == YYUNDEFTOK)
943 {
944 YYDPRINTF ((stderr, " Always Err\n"));
945 return 1;
946 }
947 while (1)
948 {
949 int yyrule = yypact[*yyesp];
950 if (yypact_value_is_default (yyrule)
951 || (yyrule += yytoken) < 0 || YYLAST < yyrule
952 || yycheck[yyrule] != yytoken)
953 {
954 yyrule = yydefact[*yyesp];
955 if (yyrule == 0)
956 {
957 YYDPRINTF ((stderr, " Err\n"));
958 return 1;
959 }
960 }
961 else
962 {
963 yyrule = yytable[yyrule];
964 if (yytable_value_is_error (yyrule))
965 {
966 YYDPRINTF ((stderr, " Err\n"));
967 return 1;
968 }
969 if (0 < yyrule)
970 {
971 YYDPRINTF ((stderr, " S%d\n", yyrule));
972 return 0;
973 }
974 yyrule = -yyrule;
975 }
976 {
977 YYSIZE_T yylen = yyr2[yyrule];
978 YYDPRINTF ((stderr, " R%d", yyrule - 1));
979 if (yyesp != yyes_prev)
980 {
981 YYSIZE_T yysize = yyesp - *yyes + 1;
982 if (yylen < yysize)
983 {
984 yyesp -= yylen;
985 yylen = 0;
986 }
987 else
988 {
989 yylen -= yysize;
990 yyesp = yyes_prev;
991 }
992 }
993 if (yylen)
994 yyesp = yyes_prev -= yylen;
995 }
996 {
997 int yystate;
998 {
999 int yylhs = yyr1[yyrule] - YYNTOKENS;
1000 yystate = yypgoto[yylhs] + *yyesp;
1001 if (yystate < 0 || YYLAST < yystate
1002 || yycheck[yystate] != *yyesp)
1003 yystate = yydefgoto[yylhs];
1004 else
1005 yystate = yytable[yystate];
1006 }
1007 if (yyesp == yyes_prev)
1008 {
1009 yyesp = *yyes;
1010 *yyesp = yystate;
1011 }
1012 else
1013 {
1014 if (yy_lac_stack_realloc (yyes_capacity, 1,
1015 #if ]b4_api_PREFIX[DEBUG
1016 " (", ")",
1017 #endif
1018 yyes, yyesa, &yyesp, yyes_prev))
1019 {
1020 YYDPRINTF ((stderr, "\n"));
1021 return 2;
1022 }
1023 *++yyesp = yystate;
1024 }
1025 YYDPRINTF ((stderr, " G%d", yystate));
1026 }
1027 }
1028 }]])[
1029
1030
1031 #if YYERROR_VERBOSE
1032
1033 # ifndef yystrlen
1034 # if defined __GLIBC__ && defined _STRING_H
1035 # define yystrlen strlen
1036 # else
1037 /* Return the length of YYSTR. */
1038 ]b4_function_define([yystrlen], [static YYSIZE_T],
1039 [[const char *yystr], [yystr]])[
1040 {
1041 YYSIZE_T yylen;
1042 for (yylen = 0; yystr[yylen]; yylen++)
1043 continue;
1044 return yylen;
1045 }
1046 # endif
1047 # endif
1048
1049 # ifndef yystpcpy
1050 # if defined __GLIBC__ && defined _STRING_H && defined _GNU_SOURCE
1051 # define yystpcpy stpcpy
1052 # else
1053 /* Copy YYSRC to YYDEST, returning the address of the terminating '\0' in
1054 YYDEST. */
1055 ]b4_function_define([yystpcpy], [static char *],
1056 [[char *yydest], [yydest]], [[const char *yysrc], [yysrc]])[
1057 {
1058 char *yyd = yydest;
1059 const char *yys = yysrc;
1060
1061 while ((*yyd++ = *yys++) != '\0')
1062 continue;
1063
1064 return yyd - 1;
1065 }
1066 # endif
1067 # endif
1068
1069 # ifndef yytnamerr
1070 /* Copy to YYRES the contents of YYSTR after stripping away unnecessary
1071 quotes and backslashes, so that it's suitable for yyerror. The
1072 heuristic is that double-quoting is unnecessary unless the string
1073 contains an apostrophe, a comma, or backslash (other than
1074 backslash-backslash). YYSTR is taken from yytname. If YYRES is
1075 null, do not copy; instead, return the length of what the result
1076 would have been. */
1077 static YYSIZE_T
1078 yytnamerr (char *yyres, const char *yystr)
1079 {
1080 if (*yystr == '"')
1081 {
1082 YYSIZE_T yyn = 0;
1083 char const *yyp = yystr;
1084
1085 for (;;)
1086 switch (*++yyp)
1087 {
1088 case '\'':
1089 case ',':
1090 goto do_not_strip_quotes;
1091
1092 case '\\':
1093 if (*++yyp != '\\')
1094 goto do_not_strip_quotes;
1095 /* Fall through. */
1096 default:
1097 if (yyres)
1098 yyres[yyn] = *yyp;
1099 yyn++;
1100 break;
1101
1102 case '"':
1103 if (yyres)
1104 yyres[yyn] = '\0';
1105 return yyn;
1106 }
1107 do_not_strip_quotes: ;
1108 }
1109
1110 if (! yyres)
1111 return yystrlen (yystr);
1112
1113 return yystpcpy (yyres, yystr) - yyres;
1114 }
1115 # endif
1116
1117 /* Copy into *YYMSG, which is of size *YYMSG_ALLOC, an error message
1118 about the unexpected token YYTOKEN for the state stack whose top is
1119 YYSSP.]b4_lac_if([[ In order to see if a particular token T is a
1120 valid looakhead, invoke yy_lac (YYESA, YYES, YYES_CAPACITY, YYSSP, T).]])[
1121
1122 Return 0 if *YYMSG was successfully written. Return 1 if *YYMSG is
1123 not large enough to hold the message. In that case, also set
1124 *YYMSG_ALLOC to the required number of bytes. Return 2 if the
1125 required number of bytes is too large to store]b4_lac_if([[ or if
1126 yy_lac returned 2]])[. */
1127 static int
1128 yysyntax_error (YYSIZE_T *yymsg_alloc, char **yymsg,
1129 ]b4_lac_if([[yytype_int16 *yyesa, yytype_int16 **yyes,
1130 YYSIZE_T *yyes_capacity, ]])[yytype_int16 *yyssp, int yytoken)
1131 {
1132 YYSIZE_T yysize0 = yytnamerr (YY_NULL, yytname[yytoken]);
1133 YYSIZE_T yysize = yysize0;
1134 enum { YYERROR_VERBOSE_ARGS_MAXIMUM = 5 };
1135 /* Internationalized format string. */
1136 const char *yyformat = YY_NULL;
1137 /* Arguments of yyformat. */
1138 char const *yyarg[YYERROR_VERBOSE_ARGS_MAXIMUM];
1139 /* Number of reported tokens (one for the "unexpected", one per
1140 "expected"). */
1141 int yycount = 0;
1142
1143 /* There are many possibilities here to consider:
1144 - If this state is a consistent state with a default action, then
1145 the only way this function was invoked is if the default action
1146 is an error action. In that case, don't check for expected
1147 tokens because there are none.
1148 - The only way there can be no lookahead present (in yychar) is if
1149 this state is a consistent state with a default action. Thus,
1150 detecting the absence of a lookahead is sufficient to determine
1151 that there is no unexpected or expected token to report. In that
1152 case, just report a simple "syntax error".
1153 - Don't assume there isn't a lookahead just because this state is a
1154 consistent state with a default action. There might have been a
1155 previous inconsistent state, consistent state with a non-default
1156 action, or user semantic action that manipulated yychar.]b4_lac_if([[
1157 In the first two cases, it might appear that the current syntax
1158 error should have been detected in the previous state when yy_lac
1159 was invoked. However, at that time, there might have been a
1160 different syntax error that discarded a different initial context
1161 during error recovery, leaving behind the current lookahead.]], [[
1162 - Of course, the expected token list depends on states to have
1163 correct lookahead information, and it depends on the parser not
1164 to perform extra reductions after fetching a lookahead from the
1165 scanner and before detecting a syntax error. Thus, state merging
1166 (from LALR or IELR) and default reductions corrupt the expected
1167 token list. However, the list is correct for canonical LR with
1168 one exception: it will still contain any token that will not be
1169 accepted due to an error action in a later state.]])[
1170 */
1171 if (yytoken != YYEMPTY)
1172 {
1173 int yyn = yypact[*yyssp];]b4_lac_if([[
1174 YYDPRINTF ((stderr, "Constructing syntax error message\n"));]])[
1175 yyarg[yycount++] = yytname[yytoken];
1176 if (!yypact_value_is_default (yyn))
1177 {]b4_lac_if([], [[
1178 /* Start YYX at -YYN if negative to avoid negative indexes in
1179 YYCHECK. In other words, skip the first -YYN actions for
1180 this state because they are default actions. */
1181 int yyxbegin = yyn < 0 ? -yyn : 0;
1182 /* Stay within bounds of both yycheck and yytname. */
1183 int yychecklim = YYLAST - yyn + 1;
1184 int yyxend = yychecklim < YYNTOKENS ? yychecklim : YYNTOKENS;]])[
1185 int yyx;]b4_lac_if([[
1186
1187 for (yyx = 0; yyx < YYNTOKENS; ++yyx)
1188 if (yyx != YYTERROR && yyx != YYUNDEFTOK)
1189 {
1190 {
1191 int yy_lac_status = yy_lac (yyesa, yyes, yyes_capacity,
1192 yyssp, yyx);
1193 if (yy_lac_status == 2)
1194 return 2;
1195 if (yy_lac_status == 1)
1196 continue;
1197 }]], [[
1198
1199 for (yyx = yyxbegin; yyx < yyxend; ++yyx)
1200 if (yycheck[yyx + yyn] == yyx && yyx != YYTERROR
1201 && !yytable_value_is_error (yytable[yyx + yyn]))
1202 {]])[
1203 if (yycount == YYERROR_VERBOSE_ARGS_MAXIMUM)
1204 {
1205 yycount = 1;
1206 yysize = yysize0;
1207 break;
1208 }
1209 yyarg[yycount++] = yytname[yyx];
1210 {
1211 YYSIZE_T yysize1 = yysize + yytnamerr (YY_NULL, yytname[yyx]);
1212 if (! (yysize <= yysize1
1213 && yysize1 <= YYSTACK_ALLOC_MAXIMUM))
1214 return 2;
1215 yysize = yysize1;
1216 }
1217 }
1218 }]b4_lac_if([[
1219 # if ]b4_api_PREFIX[DEBUG
1220 else if (yydebug)
1221 YYFPRINTF (stderr, "No expected tokens.\n");
1222 # endif]])[
1223 }
1224
1225 switch (yycount)
1226 {
1227 # define YYCASE_(N, S) \
1228 case N: \
1229 yyformat = S; \
1230 break
1231 YYCASE_(0, YY_("syntax error"));
1232 YYCASE_(1, YY_("syntax error, unexpected %s"));
1233 YYCASE_(2, YY_("syntax error, unexpected %s, expecting %s"));
1234 YYCASE_(3, YY_("syntax error, unexpected %s, expecting %s or %s"));
1235 YYCASE_(4, YY_("syntax error, unexpected %s, expecting %s or %s or %s"));
1236 YYCASE_(5, YY_("syntax error, unexpected %s, expecting %s or %s or %s or %s"));
1237 # undef YYCASE_
1238 }
1239
1240 {
1241 YYSIZE_T yysize1 = yysize + yystrlen (yyformat);
1242 if (! (yysize <= yysize1 && yysize1 <= YYSTACK_ALLOC_MAXIMUM))
1243 return 2;
1244 yysize = yysize1;
1245 }
1246
1247 if (*yymsg_alloc < yysize)
1248 {
1249 *yymsg_alloc = 2 * yysize;
1250 if (! (yysize <= *yymsg_alloc
1251 && *yymsg_alloc <= YYSTACK_ALLOC_MAXIMUM))
1252 *yymsg_alloc = YYSTACK_ALLOC_MAXIMUM;
1253 return 1;
1254 }
1255
1256 /* Avoid sprintf, as that infringes on the user's name space.
1257 Don't have undefined behavior even if the translation
1258 produced a string with the wrong number of "%s"s. */
1259 {
1260 char *yyp = *yymsg;
1261 int yyi = 0;
1262 while ((*yyp = *yyformat) != '\0')
1263 if (*yyp == '%' && yyformat[1] == 's' && yyi < yycount)
1264 {
1265 yyp += yytnamerr (yyp, yyarg[yyi++]);
1266 yyformat += 2;
1267 }
1268 else
1269 {
1270 yyp++;
1271 yyformat++;
1272 }
1273 }
1274 return 0;
1275 }
1276 #endif /* YYERROR_VERBOSE */
1277
1278 ]b4_yydestruct_define[
1279
1280 ]b4_pure_if([], [
1281
1282 b4_declare_scanner_communication_variables])[]b4_push_if([[
1283
1284 struct yypstate
1285 {]b4_declare_parser_state_variables[
1286 /* Used to determine if this is the first time this instance has
1287 been used. */
1288 int yynew;
1289 };]b4_pure_if([], [[
1290
1291 static char yypstate_allocated = 0;]])b4_pull_if([
1292
1293 b4_function_define([[yyparse]], [[int]], b4_parse_param)[
1294 {
1295 return yypull_parse (YY_NULL]m4_ifset([b4_parse_param],
1296 [[, ]b4_args(b4_parse_param)])[);
1297 }
1298
1299 ]b4_function_define([[yypull_parse]], [[int]],
1300 [[[yypstate *yyps]], [[yyps]]]m4_ifset([b4_parse_param], [,
1301 b4_parse_param]))[
1302 {
1303 int yystatus;
1304 yypstate *yyps_local;]b4_pure_if([[
1305 int yychar;
1306 YYSTYPE yylval;]b4_locations_if([[
1307 static YYLTYPE yyloc_default][]b4_yyloc_default[;
1308 YYLTYPE yylloc = yyloc_default;]])])[
1309 if (yyps)
1310 yyps_local = yyps;
1311 else
1312 {
1313 yyps_local = yypstate_new ();
1314 if (!yyps_local)
1315 {]b4_pure_if([[
1316 yyerror (]b4_yyerror_args[YY_("memory exhausted"));]], [[
1317 if (!yypstate_allocated)
1318 yyerror (]b4_yyerror_args[YY_("memory exhausted"));]])[
1319 return 2;
1320 }
1321 }
1322 do {
1323 yychar = ]b4_lex[;
1324 yystatus =
1325 yypush_parse (yyps_local]b4_pure_if([[, yychar, &yylval]b4_locations_if([[, &yylloc]])])m4_ifset([b4_parse_param], [, b4_args(b4_parse_param)])[);
1326 } while (yystatus == YYPUSH_MORE);
1327 if (!yyps)
1328 yypstate_delete (yyps_local);
1329 return yystatus;
1330 }]])[
1331
1332 /* Initialize the parser data structure. */
1333 ]b4_function_define([[yypstate_new]], [[yypstate *]])[
1334 {
1335 yypstate *yyps;]b4_pure_if([], [[
1336 if (yypstate_allocated)
1337 return YY_NULL;]])[
1338 yyps = (yypstate *) malloc (sizeof *yyps);
1339 if (!yyps)
1340 return YY_NULL;
1341 yyps->yynew = 1;]b4_pure_if([], [[
1342 yypstate_allocated = 1;]])[
1343 return yyps;
1344 }
1345
1346 ]b4_function_define([[yypstate_delete]], [[void]],
1347 [[[yypstate *yyps]], [[yyps]]])[
1348 {
1349 #ifndef yyoverflow
1350 /* If the stack was reallocated but the parse did not complete, then the
1351 stack still needs to be freed. */
1352 if (!yyps->yynew && yyps->yyss != yyps->yyssa)
1353 YYSTACK_FREE (yyps->yyss);
1354 #endif]b4_lac_if([[
1355 if (!yyps->yynew && yyps->yyes != yyps->yyesa)
1356 YYSTACK_FREE (yyps->yyes);]])[
1357 free (yyps);]b4_pure_if([], [[
1358 yypstate_allocated = 0;]])[
1359 }
1360 ]b4_pure_if([[
1361 #define ]b4_prefix[nerrs yyps->]b4_prefix[nerrs]])[
1362 #define yystate yyps->yystate
1363 #define yyerrstatus yyps->yyerrstatus
1364 #define yyssa yyps->yyssa
1365 #define yyss yyps->yyss
1366 #define yyssp yyps->yyssp
1367 #define yyvsa yyps->yyvsa
1368 #define yyvs yyps->yyvs
1369 #define yyvsp yyps->yyvsp]b4_locations_if([[
1370 #define yylsa yyps->yylsa
1371 #define yyls yyps->yyls
1372 #define yylsp yyps->yylsp
1373 #define yyerror_range yyps->yyerror_range]])[
1374 #define yystacksize yyps->yystacksize]b4_lac_if([[
1375 #define yyesa yyps->yyesa
1376 #define yyes yyps->yyes
1377 #define yyes_capacity yyps->yyes_capacity]])[
1378
1379
1380 /*---------------.
1381 | yypush_parse. |
1382 `---------------*/
1383
1384 ]b4_function_define([[yypush_parse]], [[int]],
1385 [[[yypstate *yyps]], [[yyps]]]b4_pure_if([,
1386 [[[int yypushed_char]], [[yypushed_char]]],
1387 [[[YYSTYPE const *yypushed_val]], [[yypushed_val]]]b4_locations_if([,
1388 [[[YYLTYPE *yypushed_loc]], [[yypushed_loc]]]])])m4_ifset([b4_parse_param], [,
1389 b4_parse_param]))], [[
1390
1391
1392 /*----------.
1393 | yyparse. |
1394 `----------*/
1395
1396 ]b4_function_define([yyparse], [int], b4_parse_param)])[
1397 {]b4_pure_if([b4_declare_scanner_communication_variables
1398 ])b4_push_if([b4_pure_if([], [[
1399 int yypushed_char = yychar;
1400 YYSTYPE yypushed_val = yylval;]b4_locations_if([[
1401 YYLTYPE yypushed_loc = yylloc;]])
1402 ])],
1403 [b4_declare_parser_state_variables
1404 ])b4_lac_if([[
1405 int yy_lac_established = 0;]])[
1406 int yyn;
1407 int yyresult;
1408 /* Lookahead token as an internal (translated) token number. */
1409 int yytoken = 0;
1410 /* The variables used to return semantic value and location from the
1411 action routines. */
1412 YYSTYPE yyval;]b4_locations_if([[
1413 YYLTYPE yyloc;]])[
1414
1415 #if YYERROR_VERBOSE
1416 /* Buffer for error messages, and its allocated size. */
1417 char yymsgbuf[128];
1418 char *yymsg = yymsgbuf;
1419 YYSIZE_T yymsg_alloc = sizeof yymsgbuf;
1420 #endif
1421
1422 #define YYPOPSTACK(N) (yyvsp -= (N), yyssp -= (N)]b4_locations_if([, yylsp -= (N)])[)
1423
1424 /* The number of symbols on the RHS of the reduced rule.
1425 Keep to zero when no symbol should be popped. */
1426 int yylen = 0;]b4_push_if([[
1427
1428 if (!yyps->yynew)
1429 {
1430 yyn = yypact[yystate];
1431 goto yyread_pushed_token;
1432 }]])[
1433
1434 yyssp = yyss = yyssa;
1435 yyvsp = yyvs = yyvsa;]b4_locations_if([[
1436 yylsp = yyls = yylsa;]])[
1437 yystacksize = YYINITDEPTH;]b4_lac_if([[
1438
1439 yyes = yyesa;
1440 yyes_capacity = sizeof yyesa / sizeof *yyes;
1441 if (YYMAXDEPTH < yyes_capacity)
1442 yyes_capacity = YYMAXDEPTH;]])[
1443
1444 YYDPRINTF ((stderr, "Starting parse\n"));
1445
1446 yystate = 0;
1447 yyerrstatus = 0;
1448 yynerrs = 0;
1449 yychar = YYEMPTY; /* Cause a token to be read. */
1450 ]m4_ifdef([b4_initial_action], [
1451 b4_dollar_pushdef([m4_define([b4_dollar_dollar_used])yylval], [],
1452 [b4_push_if([b4_pure_if([*])yypushed_loc], [yylloc])])dnl
1453 /* User initialization code. */
1454 b4_user_initial_action
1455 b4_dollar_popdef[]dnl
1456 m4_ifdef([b4_dollar_dollar_used],[[ yyvsp[0] = yylval;
1457 ]])])dnl
1458 b4_locations_if([[ yylsp[0] = ]b4_push_if([b4_pure_if([*])yypushed_loc], [yylloc])[;
1459 ]])dnl
1460 [ goto yysetstate;
1461
1462 /*------------------------------------------------------------.
1463 | yynewstate -- Push a new state, which is found in yystate. |
1464 `------------------------------------------------------------*/
1465 yynewstate:
1466 /* In all cases, when you get here, the value and location stacks
1467 have just been pushed. So pushing a state here evens the stacks. */
1468 yyssp++;
1469
1470 yysetstate:
1471 *yyssp = yystate;
1472
1473 if (yyss + yystacksize - 1 <= yyssp)
1474 {
1475 /* Get the current used size of the three stacks, in elements. */
1476 YYSIZE_T yysize = yyssp - yyss + 1;
1477
1478 #ifdef yyoverflow
1479 {
1480 /* Give user a chance to reallocate the stack. Use copies of
1481 these so that the &'s don't force the real ones into
1482 memory. */
1483 YYSTYPE *yyvs1 = yyvs;
1484 yytype_int16 *yyss1 = yyss;]b4_locations_if([
1485 YYLTYPE *yyls1 = yyls;])[
1486
1487 /* Each stack pointer address is followed by the size of the
1488 data in use in that stack, in bytes. This used to be a
1489 conditional around just the two extra args, but that might
1490 be undefined if yyoverflow is a macro. */
1491 yyoverflow (YY_("memory exhausted"),
1492 &yyss1, yysize * sizeof (*yyssp),
1493 &yyvs1, yysize * sizeof (*yyvsp),]b4_locations_if([
1494 &yyls1, yysize * sizeof (*yylsp),])[
1495 &yystacksize);
1496 ]b4_locations_if([
1497 yyls = yyls1;])[
1498 yyss = yyss1;
1499 yyvs = yyvs1;
1500 }
1501 #else /* no yyoverflow */
1502 # ifndef YYSTACK_RELOCATE
1503 goto yyexhaustedlab;
1504 # else
1505 /* Extend the stack our own way. */
1506 if (YYMAXDEPTH <= yystacksize)
1507 goto yyexhaustedlab;
1508 yystacksize *= 2;
1509 if (YYMAXDEPTH < yystacksize)
1510 yystacksize = YYMAXDEPTH;
1511
1512 {
1513 yytype_int16 *yyss1 = yyss;
1514 union yyalloc *yyptr =
1515 (union yyalloc *) YYSTACK_ALLOC (YYSTACK_BYTES (yystacksize));
1516 if (! yyptr)
1517 goto yyexhaustedlab;
1518 YYSTACK_RELOCATE (yyss_alloc, yyss);
1519 YYSTACK_RELOCATE (yyvs_alloc, yyvs);]b4_locations_if([
1520 YYSTACK_RELOCATE (yyls_alloc, yyls);])[
1521 # undef YYSTACK_RELOCATE
1522 if (yyss1 != yyssa)
1523 YYSTACK_FREE (yyss1);
1524 }
1525 # endif
1526 #endif /* no yyoverflow */
1527
1528 yyssp = yyss + yysize - 1;
1529 yyvsp = yyvs + yysize - 1;]b4_locations_if([
1530 yylsp = yyls + yysize - 1;])[
1531
1532 YYDPRINTF ((stderr, "Stack size increased to %lu\n",
1533 (unsigned long int) yystacksize));
1534
1535 if (yyss + yystacksize - 1 <= yyssp)
1536 YYABORT;
1537 }
1538
1539 YYDPRINTF ((stderr, "Entering state %d\n", yystate));
1540
1541 if (yystate == YYFINAL)
1542 YYACCEPT;
1543
1544 goto yybackup;
1545
1546 /*-----------.
1547 | yybackup. |
1548 `-----------*/
1549 yybackup:
1550
1551 /* Do appropriate processing given the current state. Read a
1552 lookahead token if we need one and don't already have one. */
1553
1554 /* First try to decide what to do without reference to lookahead token. */
1555 yyn = yypact[yystate];
1556 if (yypact_value_is_default (yyn))
1557 goto yydefault;
1558
1559 /* Not known => get a lookahead token if don't already have one. */
1560
1561 /* YYCHAR is either YYEMPTY or YYEOF or a valid lookahead symbol. */
1562 if (yychar == YYEMPTY)
1563 {]b4_push_if([[
1564 if (!yyps->yynew)
1565 {]b4_use_push_for_pull_if([], [[
1566 YYDPRINTF ((stderr, "Return for a new token:\n"));]])[
1567 yyresult = YYPUSH_MORE;
1568 goto yypushreturn;
1569 }
1570 yyps->yynew = 0;]b4_pure_if([], [[
1571 /* Restoring the pushed token is only necessary for the first
1572 yypush_parse invocation since subsequent invocations don't overwrite
1573 it before jumping to yyread_pushed_token. */
1574 yychar = yypushed_char;
1575 yylval = yypushed_val;]b4_locations_if([[
1576 yylloc = yypushed_loc;]])])[
1577 yyread_pushed_token:]])[
1578 YYDPRINTF ((stderr, "Reading a token: "));]b4_push_if([b4_pure_if([[
1579 yychar = yypushed_char;
1580 if (yypushed_val)
1581 yylval = *yypushed_val;]b4_locations_if([[
1582 if (yypushed_loc)
1583 yylloc = *yypushed_loc;]])])], [[
1584 yychar = ]b4_lex[;]])[
1585 }
1586
1587 if (yychar <= YYEOF)
1588 {
1589 yychar = yytoken = YYEOF;
1590 YYDPRINTF ((stderr, "Now at end of input.\n"));
1591 }
1592 else
1593 {
1594 yytoken = YYTRANSLATE (yychar);
1595 YY_SYMBOL_PRINT ("Next token is", yytoken, &yylval, &yylloc);
1596 }
1597
1598 /* If the proper action on seeing token YYTOKEN is to reduce or to
1599 detect an error, take that action. */
1600 yyn += yytoken;
1601 if (yyn < 0 || YYLAST < yyn || yycheck[yyn] != yytoken)]b4_lac_if([[
1602 {
1603 YY_LAC_ESTABLISH;
1604 goto yydefault;
1605 }]], [[
1606 goto yydefault;]])[
1607 yyn = yytable[yyn];
1608 if (yyn <= 0)
1609 {
1610 if (yytable_value_is_error (yyn))
1611 goto yyerrlab;]b4_lac_if([[
1612 YY_LAC_ESTABLISH;]])[
1613 yyn = -yyn;
1614 goto yyreduce;
1615 }
1616
1617 /* Count tokens shifted since error; after three, turn off error
1618 status. */
1619 if (yyerrstatus)
1620 yyerrstatus--;
1621
1622 /* Shift the lookahead token. */
1623 YY_SYMBOL_PRINT ("Shifting", yytoken, &yylval, &yylloc);
1624
1625 /* Discard the shifted token. */
1626 yychar = YYEMPTY;]b4_lac_if([[
1627 YY_LAC_DISCARD ("shift");]])[
1628
1629 yystate = yyn;
1630 YY_IGNORE_MAYBE_UNINITIALIZED_BEGIN
1631 *++yyvsp = yylval;
1632 YY_IGNORE_MAYBE_UNINITIALIZED_END
1633 ]b4_locations_if([ *++yylsp = yylloc;])[
1634 goto yynewstate;
1635
1636
1637 /*-----------------------------------------------------------.
1638 | yydefault -- do the default action for the current state. |
1639 `-----------------------------------------------------------*/
1640 yydefault:
1641 yyn = yydefact[yystate];
1642 if (yyn == 0)
1643 goto yyerrlab;
1644 goto yyreduce;
1645
1646
1647 /*-----------------------------.
1648 | yyreduce -- Do a reduction. |
1649 `-----------------------------*/
1650 yyreduce:
1651 /* yyn is the number of a rule to reduce with. */
1652 yylen = yyr2[yyn];
1653
1654 /* If YYLEN is nonzero, implement the default value of the action:
1655 `$$ = $1'.
1656
1657 Otherwise, the following line sets YYVAL to garbage.
1658 This behavior is undocumented and Bison
1659 users should not rely upon it. Assigning to YYVAL
1660 unconditionally makes the parser a bit smaller, and it avoids a
1661 GCC warning that YYVAL may be used uninitialized. */
1662 yyval = yyvsp[1-yylen];
1663
1664 ]b4_locations_if(
1665 [[ /* Default location. */
1666 YYLLOC_DEFAULT (yyloc, (yylsp - yylen), yylen);]])[
1667 YY_REDUCE_PRINT (yyn);]b4_lac_if([[
1668 {
1669 int yychar_backup = yychar;
1670 switch (yyn)
1671 {
1672 ]b4_user_actions[
1673 default: break;
1674 }
1675 if (yychar_backup != yychar)
1676 YY_LAC_DISCARD ("yychar change");
1677 }]], [[
1678 switch (yyn)
1679 {
1680 ]b4_user_actions[
1681 default: break;
1682 }]])[
1683 /* User semantic actions sometimes alter yychar, and that requires
1684 that yytoken be updated with the new translation. We take the
1685 approach of translating immediately before every use of yytoken.
1686 One alternative is translating here after every semantic action,
1687 but that translation would be missed if the semantic action invokes
1688 YYABORT, YYACCEPT, or YYERROR immediately after altering yychar or
1689 if it invokes YYBACKUP. In the case of YYABORT or YYACCEPT, an
1690 incorrect destructor might then be invoked immediately. In the
1691 case of YYERROR or YYBACKUP, subsequent parser actions might lead
1692 to an incorrect destructor call or verbose syntax error message
1693 before the lookahead is translated. */
1694 YY_SYMBOL_PRINT ("-> $$ =", yyr1[yyn], &yyval, &yyloc);
1695
1696 YYPOPSTACK (yylen);
1697 yylen = 0;
1698 YY_STACK_PRINT (yyss, yyssp);
1699
1700 *++yyvsp = yyval;]b4_locations_if([
1701 *++yylsp = yyloc;])[
1702
1703 /* Now `shift' the result of the reduction. Determine what state
1704 that goes to, based on the state we popped back to and the rule
1705 number reduced by. */
1706
1707 yyn = yyr1[yyn];
1708
1709 yystate = yypgoto[yyn - YYNTOKENS] + *yyssp;
1710 if (0 <= yystate && yystate <= YYLAST && yycheck[yystate] == *yyssp)
1711 yystate = yytable[yystate];
1712 else
1713 yystate = yydefgoto[yyn - YYNTOKENS];
1714
1715 goto yynewstate;
1716
1717
1718 /*--------------------------------------.
1719 | yyerrlab -- here on detecting error. |
1720 `--------------------------------------*/
1721 yyerrlab:
1722 /* Make sure we have latest lookahead translation. See comments at
1723 user semantic actions for why this is necessary. */
1724 yytoken = yychar == YYEMPTY ? YYEMPTY : YYTRANSLATE (yychar);
1725
1726 /* If not already recovering from an error, report this error. */
1727 if (!yyerrstatus)
1728 {
1729 ++yynerrs;
1730 #if ! YYERROR_VERBOSE
1731 yyerror (]b4_yyerror_args[YY_("syntax error"));
1732 #else
1733 # define YYSYNTAX_ERROR yysyntax_error (&yymsg_alloc, &yymsg, \]b4_lac_if([[
1734 yyesa, &yyes, &yyes_capacity, \]])[
1735 yyssp, yytoken)
1736 {
1737 char const *yymsgp = YY_("syntax error");
1738 int yysyntax_error_status;]b4_lac_if([[
1739 if (yychar != YYEMPTY)
1740 YY_LAC_ESTABLISH;]])[
1741 yysyntax_error_status = YYSYNTAX_ERROR;
1742 if (yysyntax_error_status == 0)
1743 yymsgp = yymsg;
1744 else if (yysyntax_error_status == 1)
1745 {
1746 if (yymsg != yymsgbuf)
1747 YYSTACK_FREE (yymsg);
1748 yymsg = (char *) YYSTACK_ALLOC (yymsg_alloc);
1749 if (!yymsg)
1750 {
1751 yymsg = yymsgbuf;
1752 yymsg_alloc = sizeof yymsgbuf;
1753 yysyntax_error_status = 2;
1754 }
1755 else
1756 {
1757 yysyntax_error_status = YYSYNTAX_ERROR;
1758 yymsgp = yymsg;
1759 }
1760 }
1761 yyerror (]b4_yyerror_args[yymsgp);
1762 if (yysyntax_error_status == 2)
1763 goto yyexhaustedlab;
1764 }
1765 # undef YYSYNTAX_ERROR
1766 #endif
1767 }
1768
1769 ]b4_locations_if([[ yyerror_range[1] = yylloc;]])[
1770
1771 if (yyerrstatus == 3)
1772 {
1773 /* If just tried and failed to reuse lookahead token after an
1774 error, discard it. */
1775
1776 if (yychar <= YYEOF)
1777 {
1778 /* Return failure if at end of input. */
1779 if (yychar == YYEOF)
1780 YYABORT;
1781 }
1782 else
1783 {
1784 yydestruct ("Error: discarding",
1785 yytoken, &yylval]b4_locations_if([, &yylloc])[]b4_user_args[);
1786 yychar = YYEMPTY;
1787 }
1788 }
1789
1790 /* Else will try to reuse lookahead token after shifting the error
1791 token. */
1792 goto yyerrlab1;
1793
1794
1795 /*---------------------------------------------------.
1796 | yyerrorlab -- error raised explicitly by YYERROR. |
1797 `---------------------------------------------------*/
1798 yyerrorlab:
1799
1800 /* Pacify compilers like GCC when the user code never invokes
1801 YYERROR and the label yyerrorlab therefore never appears in user
1802 code. */
1803 if (/*CONSTCOND*/ 0)
1804 goto yyerrorlab;
1805
1806 ]b4_locations_if([[ yyerror_range[1] = yylsp[1-yylen];
1807 ]])[ /* Do not reclaim the symbols of the rule whose action triggered
1808 this YYERROR. */
1809 YYPOPSTACK (yylen);
1810 yylen = 0;
1811 YY_STACK_PRINT (yyss, yyssp);
1812 yystate = *yyssp;
1813 goto yyerrlab1;
1814
1815
1816 /*-------------------------------------------------------------.
1817 | yyerrlab1 -- common code for both syntax error and YYERROR. |
1818 `-------------------------------------------------------------*/
1819 yyerrlab1:
1820 yyerrstatus = 3; /* Each real token shifted decrements this. */
1821
1822 for (;;)
1823 {
1824 yyn = yypact[yystate];
1825 if (!yypact_value_is_default (yyn))
1826 {
1827 yyn += YYTERROR;
1828 if (0 <= yyn && yyn <= YYLAST && yycheck[yyn] == YYTERROR)
1829 {
1830 yyn = yytable[yyn];
1831 if (0 < yyn)
1832 break;
1833 }
1834 }
1835
1836 /* Pop the current state because it cannot handle the error token. */
1837 if (yyssp == yyss)
1838 YYABORT;
1839
1840 ]b4_locations_if([[ yyerror_range[1] = *yylsp;]])[
1841 yydestruct ("Error: popping",
1842 yystos[yystate], yyvsp]b4_locations_if([, yylsp])[]b4_user_args[);
1843 YYPOPSTACK (1);
1844 yystate = *yyssp;
1845 YY_STACK_PRINT (yyss, yyssp);
1846 }]b4_lac_if([[
1847
1848 /* If the stack popping above didn't lose the initial context for the
1849 current lookahead token, the shift below will for sure. */
1850 YY_LAC_DISCARD ("error recovery");]])[
1851
1852 YY_IGNORE_MAYBE_UNINITIALIZED_BEGIN
1853 *++yyvsp = yylval;
1854 YY_IGNORE_MAYBE_UNINITIALIZED_END
1855 ]b4_locations_if([[
1856 yyerror_range[2] = yylloc;
1857 /* Using YYLLOC is tempting, but would change the location of
1858 the lookahead. YYLOC is available though. */
1859 YYLLOC_DEFAULT (yyloc, yyerror_range, 2);
1860 *++yylsp = yyloc;]])[
1861
1862 /* Shift the error token. */
1863 YY_SYMBOL_PRINT ("Shifting", yystos[yyn], yyvsp, yylsp);
1864
1865 yystate = yyn;
1866 goto yynewstate;
1867
1868
1869 /*-------------------------------------.
1870 | yyacceptlab -- YYACCEPT comes here. |
1871 `-------------------------------------*/
1872 yyacceptlab:
1873 yyresult = 0;
1874 goto yyreturn;
1875
1876 /*-----------------------------------.
1877 | yyabortlab -- YYABORT comes here. |
1878 `-----------------------------------*/
1879 yyabortlab:
1880 yyresult = 1;
1881 goto yyreturn;
1882
1883 #if ]b4_lac_if([[1]], [[!defined yyoverflow || YYERROR_VERBOSE]])[
1884 /*-------------------------------------------------.
1885 | yyexhaustedlab -- memory exhaustion comes here. |
1886 `-------------------------------------------------*/
1887 yyexhaustedlab:
1888 yyerror (]b4_yyerror_args[YY_("memory exhausted"));
1889 yyresult = 2;
1890 /* Fall through. */
1891 #endif
1892
1893 yyreturn:
1894 if (yychar != YYEMPTY)
1895 {
1896 /* Make sure we have latest lookahead translation. See comments at
1897 user semantic actions for why this is necessary. */
1898 yytoken = YYTRANSLATE (yychar);
1899 yydestruct ("Cleanup: discarding lookahead",
1900 yytoken, &yylval]b4_locations_if([, &yylloc])[]b4_user_args[);
1901 }
1902 /* Do not reclaim the symbols of the rule whose action triggered
1903 this YYABORT or YYACCEPT. */
1904 YYPOPSTACK (yylen);
1905 YY_STACK_PRINT (yyss, yyssp);
1906 while (yyssp != yyss)
1907 {
1908 yydestruct ("Cleanup: popping",
1909 yystos[*yyssp], yyvsp]b4_locations_if([, yylsp])[]b4_user_args[);
1910 YYPOPSTACK (1);
1911 }
1912 #ifndef yyoverflow
1913 if (yyss != yyssa)
1914 YYSTACK_FREE (yyss);
1915 #endif]b4_lac_if([[
1916 if (yyes != yyesa)
1917 YYSTACK_FREE (yyes);]])b4_push_if([[
1918 yyps->yynew = 1;
1919
1920 yypushreturn:]])[
1921 #if YYERROR_VERBOSE
1922 if (yymsg != yymsgbuf)
1923 YYSTACK_FREE (yymsg);
1924 #endif
1925 return yyresult;
1926 }
1927 ]b4_epilogue[]dnl
1928 b4_output_end()
1929
1930 b4_defines_if(
1931 [b4_output_begin([b4_spec_defines_file])[
1932 ]b4_copyright([Bison interface for Yacc-like parsers in C])[
1933
1934 ]b4_shared_declarations[
1935 ]b4_output_end()
1936 ])# b4_defines_if
bison