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1 -*- C -*-
2 # Yacc compatible skeleton for Bison
3
4 # Copyright (C) 1984, 1989-1990, 2000-2013 Free Software Foundation,
5 # Inc.
6
7 m4_pushdef([b4_copyright_years],
8 [1984, 1989-1990, 2000-2013])
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])@}], [$3])])
144
145
146 ## ----------- ##
147 ## Locations. ##
148 ## ----------- ##
149
150 # b4_lhs_location()
151 # -----------------
152 # Expansion of @$.
153 m4_define([b4_lhs_location],
154 [(yyloc)])
155
156
157 # b4_rhs_location(RULE-LENGTH, NUM)
158 # ---------------------------------
159 # Expansion of @NUM, where the current rule has RULE-LENGTH symbols
160 # on RHS.
161 m4_define([b4_rhs_location],
162 [(yylsp@{b4_subtract([$2], [$1])@})])
163
164
165 ## -------------- ##
166 ## Declarations. ##
167 ## -------------- ##
168
169 # b4_declare_scanner_communication_variables
170 # ------------------------------------------
171 # Declare the variables that are global, or local to YYPARSE if
172 # pure-parser.
173 m4_define([b4_declare_scanner_communication_variables], [[
174 /* The lookahead symbol. */
175 int yychar;
176
177 ]b4_pure_if([[
178 /* The semantic value of the lookahead symbol. */
179 /* Default value used for initialization, for pacifying older GCCs
180 or non-GCC compilers. */
181 YY_INITIAL_VALUE (static YYSTYPE yyval_default;)
182 YYSTYPE yylval YY_INITIAL_VALUE (= yyval_default);]b4_locations_if([[
183
184 /* Location data for the lookahead symbol. */
185 static YYLTYPE yyloc_default]b4_yyloc_default[;
186 YYLTYPE yylloc = yyloc_default;]])],
187 [[/* The semantic value of the lookahead symbol. */
188 YYSTYPE yylval;]b4_locations_if([[
189 /* Location data for the lookahead symbol. */
190 YYLTYPE yylloc]b4_yyloc_default[;]])[
191 /* Number of syntax errors so far. */
192 int yynerrs;]])])
193
194
195 # b4_declare_parser_state_variables
196 # ---------------------------------
197 # Declare all the variables that are needed to maintain the parser state
198 # between calls to yypush_parse.
199 m4_define([b4_declare_parser_state_variables], [b4_pure_if([[
200 /* Number of syntax errors so far. */
201 int yynerrs;
202 ]])[
203 int yystate;
204 /* Number of tokens to shift before error messages enabled. */
205 int yyerrstatus;
206
207 /* The stacks and their tools:
208 'yyss': related to states.
209 'yyvs': related to semantic values.]b4_locations_if([[
210 'yyls': related to locations.]])[
211
212 Refer to the stacks through separate pointers, to allow yyoverflow
213 to reallocate them elsewhere. */
214
215 /* The state stack. */
216 yytype_int16 yyssa[YYINITDEPTH];
217 yytype_int16 *yyss;
218 yytype_int16 *yyssp;
219
220 /* The semantic value stack. */
221 YYSTYPE yyvsa[YYINITDEPTH];
222 YYSTYPE *yyvs;
223 YYSTYPE *yyvsp;]b4_locations_if([[
224
225 /* The location stack. */
226 YYLTYPE yylsa[YYINITDEPTH];
227 YYLTYPE *yyls;
228 YYLTYPE *yylsp;
229
230 /* The locations where the error started and ended. */
231 YYLTYPE yyerror_range[3];]])[
232
233 YYSIZE_T yystacksize;]b4_lac_if([[
234
235 yytype_int16 yyesa@{]b4_percent_define_get([[parse.lac.es-capacity-initial]])[@};
236 yytype_int16 *yyes;
237 YYSIZE_T yyes_capacity;]])])
238
239
240 # b4_declare_yyparse_push_
241 # ------------------------
242 # Declaration of yyparse (and dependencies) when using the push parser
243 # (including in pull mode).
244 m4_define([b4_declare_yyparse_push_],
245 [[#ifndef YYPUSH_MORE_DEFINED
246 # define YYPUSH_MORE_DEFINED
247 enum { YYPUSH_MORE = 4 };
248 #endif
249
250 typedef struct ]b4_prefix[pstate ]b4_prefix[pstate;
251
252 ]b4_pull_if([b4_function_declare([b4_prefix[parse]], [[int]], b4_parse_param)
253 ])b4_function_declare([b4_prefix[push_parse]], [[int]],
254 [[b4_prefix[pstate *ps]], [[ps]]]b4_pure_if([,
255 [[[int pushed_char]], [[pushed_char]]],
256 [[b4_api_PREFIX[STYPE const *pushed_val]], [[pushed_val]]]b4_locations_if([,
257 [[b4_api_PREFIX[LTYPE *pushed_loc]], [[pushed_loc]]]])])m4_ifset([b4_parse_param], [,
258 b4_parse_param]))
259 b4_pull_if([b4_function_declare([b4_prefix[pull_parse]], [[int]],
260 [[b4_prefix[pstate *ps]], [[ps]]]m4_ifset([b4_parse_param], [,
261 b4_parse_param]))])
262 b4_function_declare([b4_prefix[pstate_new]], [b4_prefix[pstate *]],
263 [[[void]], []])
264 b4_function_declare([b4_prefix[pstate_delete]], [[void]],
265 [[b4_prefix[pstate *ps]], [[ps]]])dnl
266 ])
267
268 # b4_declare_yyparse_
269 # -------------------
270 # When not the push parser.
271 m4_define([b4_declare_yyparse_],
272 [b4_function_declare(b4_prefix[parse], [int], b4_parse_param)])
273
274
275 # b4_declare_yyparse
276 # ------------------
277 m4_define([b4_declare_yyparse],
278 [b4_push_if([b4_declare_yyparse_push_],
279 [b4_declare_yyparse_])[]dnl
280 ])
281
282
283 # b4_shared_declarations
284 # ----------------------
285 # Declaration that might either go into the header (if --defines)
286 # or open coded in the parser body.
287 m4_define([b4_shared_declarations],
288 [b4_cpp_guard_open([b4_spec_defines_file])[
289 ]b4_declare_yydebug[
290 ]b4_percent_code_get([[requires]])[
291 ]b4_token_enums_defines[
292 ]b4_declare_yylstype[
293 ]b4_declare_yyparse[
294 ]b4_percent_code_get([[provides]])[
295 ]b4_cpp_guard_close([b4_spec_defines_file])[]dnl
296 ])
297
298 ## -------------- ##
299 ## Output files. ##
300 ## -------------- ##
301
302 b4_output_begin([b4_parser_file_name])
303 b4_copyright([Bison implementation for Yacc-like parsers in C])[
304
305 /* C LALR(1) parser skeleton written by Richard Stallman, by
306 simplifying the original so-called "semantic" parser. */
307
308 /* All symbols defined below should begin with yy or YY, to avoid
309 infringing on user name space. This should be done even for local
310 variables, as they might otherwise be expanded by user macros.
311 There are some unavoidable exceptions within include files to
312 define necessary library symbols; they are noted "INFRINGES ON
313 USER NAME SPACE" below. */
314
315 ]b4_identification
316 b4_percent_code_get([[top]])[]dnl
317 m4_if(b4_api_prefix, [yy], [],
318 [[/* Substitute the type names. */
319 #define YYSTYPE ]b4_api_PREFIX[STYPE]b4_locations_if([[
320 #define YYLTYPE ]b4_api_PREFIX[LTYPE]])])[
321 ]m4_if(b4_prefix, [yy], [],
322 [[/* Substitute the variable and function names. */]b4_pull_if([[
323 #define yyparse ]b4_prefix[parse]])b4_push_if([[
324 #define yypush_parse ]b4_prefix[push_parse]b4_pull_if([[
325 #define yypull_parse ]b4_prefix[pull_parse]])[
326 #define yypstate_new ]b4_prefix[pstate_new
327 #define yypstate_delete ]b4_prefix[pstate_delete
328 #define yypstate ]b4_prefix[pstate]])[
329 #define yylex ]b4_prefix[lex
330 #define yyerror ]b4_prefix[error
331 #define yydebug ]b4_prefix[debug
332 #define yynerrs ]b4_prefix[nerrs
333 ]]b4_pure_if([], [[
334 #define yylval ]b4_prefix[lval
335 #define yychar ]b4_prefix[char]b4_locations_if([[
336 #define yylloc ]b4_prefix[lloc]])]))[
337
338 /* Copy the first part of user declarations. */
339 ]b4_user_pre_prologue[
340
341 ]b4_null_define[
342
343 /* Enabling verbose error messages. */
344 #ifdef YYERROR_VERBOSE
345 # undef YYERROR_VERBOSE
346 # define YYERROR_VERBOSE 1
347 #else
348 # define YYERROR_VERBOSE ]b4_error_verbose_if([1], [0])[
349 #endif
350
351 ]m4_ifval(m4_quote(b4_spec_defines_file),
352 [[/* In a future release of Bison, this section will be replaced
353 by #include "@basename(]b4_spec_defines_file[@)". */
354 ]])dnl
355 b4_shared_declarations[
356
357 /* Copy the second part of user declarations. */
358 ]b4_user_post_prologue
359 b4_percent_code_get[]dnl
360
361 [#ifdef short
362 # undef short
363 #endif
364
365 #ifdef YYTYPE_UINT8
366 typedef YYTYPE_UINT8 yytype_uint8;
367 #else
368 typedef unsigned char yytype_uint8;
369 #endif
370
371 #ifdef YYTYPE_INT8
372 typedef YYTYPE_INT8 yytype_int8;
373 #else
374 typedef signed char yytype_int8;
375 #endif
376
377 #ifdef YYTYPE_UINT16
378 typedef YYTYPE_UINT16 yytype_uint16;
379 #else
380 typedef unsigned short int yytype_uint16;
381 #endif
382
383 #ifdef YYTYPE_INT16
384 typedef YYTYPE_INT16 yytype_int16;
385 #else
386 typedef short int yytype_int16;
387 #endif
388
389 #ifndef YYSIZE_T
390 # ifdef __SIZE_TYPE__
391 # define YYSIZE_T __SIZE_TYPE__
392 # elif defined size_t
393 # define YYSIZE_T size_t
394 # elif ! defined YYSIZE_T
395 # include <stddef.h> /* INFRINGES ON USER NAME SPACE */
396 # define YYSIZE_T size_t
397 # else
398 # define YYSIZE_T unsigned int
399 # endif
400 #endif
401
402 #define YYSIZE_MAXIMUM ((YYSIZE_T) -1)
403
404 #ifndef YY_
405 # if defined YYENABLE_NLS && YYENABLE_NLS
406 # if ENABLE_NLS
407 # include <libintl.h> /* INFRINGES ON USER NAME SPACE */
408 # define YY_(Msgid) dgettext ("bison-runtime", Msgid)
409 # endif
410 # endif
411 # ifndef YY_
412 # define YY_(Msgid) Msgid
413 # endif
414 #endif
415
416 ]b4_attribute_define[
417
418 #if ]b4_lac_if([[1]], [[! defined yyoverflow || YYERROR_VERBOSE]])[
419
420 /* The parser invokes alloca or malloc; define the necessary symbols. */]dnl
421 b4_push_if([], [b4_lac_if([], [[
422
423 # ifdef YYSTACK_USE_ALLOCA
424 # if YYSTACK_USE_ALLOCA
425 # ifdef __GNUC__
426 # define YYSTACK_ALLOC __builtin_alloca
427 # elif defined __BUILTIN_VA_ARG_INCR
428 # include <alloca.h> /* INFRINGES ON USER NAME SPACE */
429 # elif defined _AIX
430 # define YYSTACK_ALLOC __alloca
431 # elif defined _MSC_VER
432 # include <malloc.h> /* INFRINGES ON USER NAME SPACE */
433 # define alloca _alloca
434 # else
435 # define YYSTACK_ALLOC alloca
436 # if ! defined _ALLOCA_H && ! defined EXIT_SUCCESS
437 # include <stdlib.h> /* INFRINGES ON USER NAME SPACE */
438 /* Use EXIT_SUCCESS as a witness for stdlib.h. */
439 # ifndef EXIT_SUCCESS
440 # define EXIT_SUCCESS 0
441 # endif
442 # endif
443 # endif
444 # endif
445 # endif]])])[
446
447 # ifdef YYSTACK_ALLOC
448 /* Pacify GCC's 'empty if-body' warning. */
449 # define YYSTACK_FREE(Ptr) do { /* empty */; } while (0)
450 # ifndef YYSTACK_ALLOC_MAXIMUM
451 /* The OS might guarantee only one guard page at the bottom of the stack,
452 and a page size can be as small as 4096 bytes. So we cannot safely
453 invoke alloca (N) if N exceeds 4096. Use a slightly smaller number
454 to allow for a few compiler-allocated temporary stack slots. */
455 # define YYSTACK_ALLOC_MAXIMUM 4032 /* reasonable circa 2006 */
456 # endif
457 # else
458 # define YYSTACK_ALLOC YYMALLOC
459 # define YYSTACK_FREE YYFREE
460 # ifndef YYSTACK_ALLOC_MAXIMUM
461 # define YYSTACK_ALLOC_MAXIMUM YYSIZE_MAXIMUM
462 # endif
463 # if (defined __cplusplus && ! defined EXIT_SUCCESS \
464 && ! ((defined YYMALLOC || defined malloc) \
465 && (defined YYFREE || defined free)))
466 # include <stdlib.h> /* INFRINGES ON USER NAME SPACE */
467 # ifndef EXIT_SUCCESS
468 # define EXIT_SUCCESS 0
469 # endif
470 # endif
471 # ifndef YYMALLOC
472 # define YYMALLOC malloc
473 # if ! defined malloc && ! defined EXIT_SUCCESS
474 void *malloc (YYSIZE_T); /* INFRINGES ON USER NAME SPACE */
475 # endif
476 # endif
477 # ifndef YYFREE
478 # define YYFREE free
479 # if ! defined free && ! defined EXIT_SUCCESS
480 void free (void *); /* INFRINGES ON USER NAME SPACE */
481 # endif
482 # endif
483 # endif]b4_lac_if([[
484 # define YYCOPY_NEEDED 1]])[
485 #endif]b4_lac_if([], [[ /* ! defined yyoverflow || YYERROR_VERBOSE */]])[
486
487
488 #if (! defined yyoverflow \
489 && (! defined __cplusplus \
490 || (]b4_locations_if([[defined ]b4_api_PREFIX[LTYPE_IS_TRIVIAL && ]b4_api_PREFIX[LTYPE_IS_TRIVIAL \
491 && ]])[defined ]b4_api_PREFIX[STYPE_IS_TRIVIAL && ]b4_api_PREFIX[STYPE_IS_TRIVIAL)))
492
493 /* A type that is properly aligned for any stack member. */
494 union yyalloc
495 {
496 yytype_int16 yyss_alloc;
497 YYSTYPE yyvs_alloc;]b4_locations_if([
498 YYLTYPE yyls_alloc;])[
499 };
500
501 /* The size of the maximum gap between one aligned stack and the next. */
502 # define YYSTACK_GAP_MAXIMUM (sizeof (union yyalloc) - 1)
503
504 /* The size of an array large to enough to hold all stacks, each with
505 N elements. */
506 ]b4_locations_if(
507 [# define YYSTACK_BYTES(N) \
508 ((N) * (sizeof (yytype_int16) + sizeof (YYSTYPE) + sizeof (YYLTYPE)) \
509 + 2 * YYSTACK_GAP_MAXIMUM)],
510 [# define YYSTACK_BYTES(N) \
511 ((N) * (sizeof (yytype_int16) + sizeof (YYSTYPE)) \
512 + YYSTACK_GAP_MAXIMUM)])[
513
514 # define YYCOPY_NEEDED 1
515
516 /* Relocate STACK from its old location to the new one. The
517 local variables YYSIZE and YYSTACKSIZE give the old and new number of
518 elements in the stack, and YYPTR gives the new location of the
519 stack. Advance YYPTR to a properly aligned location for the next
520 stack. */
521 # define YYSTACK_RELOCATE(Stack_alloc, Stack) \
522 do \
523 { \
524 YYSIZE_T yynewbytes; \
525 YYCOPY (&yyptr->Stack_alloc, Stack, yysize); \
526 Stack = &yyptr->Stack_alloc; \
527 yynewbytes = yystacksize * sizeof (*Stack) + YYSTACK_GAP_MAXIMUM; \
528 yyptr += yynewbytes / sizeof (*yyptr); \
529 } \
530 while (0)
531
532 #endif
533
534 #if defined YYCOPY_NEEDED && YYCOPY_NEEDED
535 /* Copy COUNT objects from SRC to DST. The source and destination do
536 not overlap. */
537 # ifndef YYCOPY
538 # if defined __GNUC__ && 1 < __GNUC__
539 # define YYCOPY(Dst, Src, Count) \
540 __builtin_memcpy (Dst, Src, (Count) * sizeof (*(Src)))
541 # else
542 # define YYCOPY(Dst, Src, Count) \
543 do \
544 { \
545 YYSIZE_T yyi; \
546 for (yyi = 0; yyi < (Count); yyi++) \
547 (Dst)[yyi] = (Src)[yyi]; \
548 } \
549 while (0)
550 # endif
551 # endif
552 #endif /* !YYCOPY_NEEDED */
553
554 /* YYFINAL -- State number of the termination state. */
555 #define YYFINAL ]b4_final_state_number[
556 /* YYLAST -- Last index in YYTABLE. */
557 #define YYLAST ]b4_last[
558
559 /* YYNTOKENS -- Number of terminals. */
560 #define YYNTOKENS ]b4_tokens_number[
561 /* YYNNTS -- Number of nonterminals. */
562 #define YYNNTS ]b4_nterms_number[
563 /* YYNRULES -- Number of rules. */
564 #define YYNRULES ]b4_rules_number[
565 /* YYNSTATES -- Number of states. */
566 #define YYNSTATES ]b4_states_number[
567
568 /* YYTRANSLATE[YYX] -- Symbol number corresponding to YYX as returned
569 by yylex, with out-of-bounds checking. */
570 #define YYUNDEFTOK ]b4_undef_token_number[
571 #define YYMAXUTOK ]b4_user_token_number_max[
572
573 #define YYTRANSLATE(YYX) \
574 ((unsigned int) (YYX) <= YYMAXUTOK ? yytranslate[YYX] : YYUNDEFTOK)
575
576 /* YYTRANSLATE[TOKEN-NUM] -- Symbol number corresponding to TOKEN-NUM
577 as returned by yylex, without out-of-bounds checking. */
578 static const ]b4_int_type_for([b4_translate])[ yytranslate[] =
579 {
580 ]b4_translate[
581 };
582
583 #if ]b4_api_PREFIX[DEBUG
584 ]b4_integral_parser_table_define([rline], [b4_rline],
585 [[YYRLINE[YYN] -- Source line where rule number YYN was defined.]])[
586 #endif
587
588 #if ]b4_api_PREFIX[DEBUG || YYERROR_VERBOSE || ]b4_token_table_flag[
589 /* YYTNAME[SYMBOL-NUM] -- String name of the symbol SYMBOL-NUM.
590 First, the terminals, then, starting at YYNTOKENS, nonterminals. */
591 static const char *const yytname[] =
592 {
593 ]b4_tname[
594 };
595 #endif
596
597 # ifdef YYPRINT
598 /* YYTOKNUM[NUM] -- (External) token number corresponding to the
599 (internal) symbol number NUM (which must be that of a token). */
600 static const ]b4_int_type_for([b4_toknum])[ yytoknum[] =
601 {
602 ]b4_toknum[
603 };
604 # endif
605
606 #define YYPACT_NINF ]b4_pact_ninf[
607
608 #define yypact_value_is_default(Yystate) \
609 ]b4_table_value_equals([[pact]], [[Yystate]], [b4_pact_ninf])[
610
611 #define YYTABLE_NINF ]b4_table_ninf[
612
613 #define yytable_value_is_error(Yytable_value) \
614 ]b4_table_value_equals([[table]], [[Yytable_value]], [b4_table_ninf])[
615
616 ]b4_parser_tables_define[
617
618 #define yyerrok (yyerrstatus = 0)
619 #define yyclearin (yychar = YYEMPTY)
620 #define YYEMPTY (-2)
621 #define YYEOF 0
622
623 #define YYACCEPT goto yyacceptlab
624 #define YYABORT goto yyabortlab
625 #define YYERROR goto yyerrorlab
626
627
628 #define YYRECOVERING() (!!yyerrstatus)
629
630 #define YYBACKUP(Token, Value) \
631 do \
632 if (yychar == YYEMPTY) \
633 { \
634 yychar = (Token); \
635 yylval = (Value); \
636 YYPOPSTACK (yylen); \
637 yystate = *yyssp; \]b4_lac_if([[
638 YY_LAC_DISCARD ("YYBACKUP"); \]])[
639 goto yybackup; \
640 } \
641 else \
642 { \
643 yyerror (]b4_yyerror_args[YY_("syntax error: cannot back up")); \
644 YYERROR; \
645 } \
646 while (0)
647
648 /* Error token number */
649 #define YYTERROR 1
650 #define YYERRCODE 256
651
652 ]b4_locations_if([[
653 ]b4_yylloc_default_define[
654 #define YYRHSLOC(Rhs, K) ((Rhs)[K])
655 ]])[
656
657 /* Enable debugging if requested. */
658 #if ]b4_api_PREFIX[DEBUG
659
660 # ifndef YYFPRINTF
661 # include <stdio.h> /* INFRINGES ON USER NAME SPACE */
662 # define YYFPRINTF fprintf
663 # endif
664
665 # define YYDPRINTF(Args) \
666 do { \
667 if (yydebug) \
668 YYFPRINTF Args; \
669 } while (0)
670
671 ]b4_yy_location_print_define[
672
673 # define YY_SYMBOL_PRINT(Title, Type, Value, Location) \
674 do { \
675 if (yydebug) \
676 { \
677 YYFPRINTF (stderr, "%s ", Title); \
678 yy_symbol_print (stderr, \
679 Type, Value]b4_locations_if([, Location])[]b4_user_args[); \
680 YYFPRINTF (stderr, "\n"); \
681 } \
682 } while (0)
683
684 ]b4_yy_symbol_print_define[
685
686 /*------------------------------------------------------------------.
687 | yy_stack_print -- Print the state stack from its BOTTOM up to its |
688 | TOP (included). |
689 `------------------------------------------------------------------*/
690
691 ]b4_function_define([yy_stack_print], [static void],
692 [[yytype_int16 *yybottom], [yybottom]],
693 [[yytype_int16 *yytop], [yytop]])[
694 {
695 YYFPRINTF (stderr, "Stack now");
696 for (; yybottom <= yytop; yybottom++)
697 {
698 int yybot = *yybottom;
699 YYFPRINTF (stderr, " %d", yybot);
700 }
701 YYFPRINTF (stderr, "\n");
702 }
703
704 # define YY_STACK_PRINT(Bottom, Top) \
705 do { \
706 if (yydebug) \
707 yy_stack_print ((Bottom), (Top)); \
708 } while (0)
709
710
711 /*------------------------------------------------.
712 | Report that the YYRULE is going to be reduced. |
713 `------------------------------------------------*/
714
715 ]b4_function_define([yy_reduce_print], [static void],
716 [[yytype_int16 *yyssp], [yyssp]],
717 [[YYSTYPE *yyvsp], [yyvsp]],
718 b4_locations_if([[[YYLTYPE *yylsp], [yylsp]],
719 ])[[int yyrule], [yyrule]]m4_ifset([b4_parse_param], [,
720 b4_parse_param]))[
721 {
722 unsigned long int yylno = yyrline[yyrule];
723 int yynrhs = yyr2[yyrule];
724 int yyi;
725 YYFPRINTF (stderr, "Reducing stack by rule %d (line %lu):\n",
726 yyrule - 1, yylno);
727 /* The symbols being reduced. */
728 for (yyi = 0; yyi < yynrhs; yyi++)
729 {
730 YYFPRINTF (stderr, " $%d = ", yyi + 1);
731 yy_symbol_print (stderr,
732 yystos[yyssp[yyi + 1 - yynrhs]],
733 &]b4_rhs_value(yynrhs, yyi + 1)[
734 ]b4_locations_if([, &]b4_rhs_location(yynrhs, yyi + 1))[]dnl
735 b4_user_args[);
736 YYFPRINTF (stderr, "\n");
737 }
738 }
739
740 # define YY_REDUCE_PRINT(Rule) \
741 do { \
742 if (yydebug) \
743 yy_reduce_print (yyssp, yyvsp, ]b4_locations_if([yylsp, ])[Rule]b4_user_args[); \
744 } while (0)
745
746 /* Nonzero means print parse trace. It is left uninitialized so that
747 multiple parsers can coexist. */
748 int yydebug;
749 #else /* !]b4_api_PREFIX[DEBUG */
750 # define YYDPRINTF(Args)
751 # define YY_SYMBOL_PRINT(Title, Type, Value, Location)
752 # define YY_STACK_PRINT(Bottom, Top)
753 # define YY_REDUCE_PRINT(Rule)
754 #endif /* !]b4_api_PREFIX[DEBUG */
755
756
757 /* YYINITDEPTH -- initial size of the parser's stacks. */
758 #ifndef YYINITDEPTH
759 # define YYINITDEPTH ]b4_stack_depth_init[
760 #endif
761
762 /* YYMAXDEPTH -- maximum size the stacks can grow to (effective only
763 if the built-in stack extension method is used).
764
765 Do not make this value too large; the results are undefined if
766 YYSTACK_ALLOC_MAXIMUM < YYSTACK_BYTES (YYMAXDEPTH)
767 evaluated with infinite-precision integer arithmetic. */
768
769 #ifndef YYMAXDEPTH
770 # define YYMAXDEPTH ]b4_stack_depth_max[
771 #endif]b4_lac_if([[
772
773 /* Given a state stack such that *YYBOTTOM is its bottom, such that
774 *YYTOP is either its top or is YYTOP_EMPTY to indicate an empty
775 stack, and such that *YYCAPACITY is the maximum number of elements it
776 can hold without a reallocation, make sure there is enough room to
777 store YYADD more elements. If not, allocate a new stack using
778 YYSTACK_ALLOC, copy the existing elements, and adjust *YYBOTTOM,
779 *YYTOP, and *YYCAPACITY to reflect the new capacity and memory
780 location. If *YYBOTTOM != YYBOTTOM_NO_FREE, then free the old stack
781 using YYSTACK_FREE. Return 0 if successful or if no reallocation is
782 required. Return 1 if memory is exhausted. */
783 static int
784 yy_lac_stack_realloc (YYSIZE_T *yycapacity, YYSIZE_T yyadd,
785 #if ]b4_api_PREFIX[DEBUG
786 char const *yydebug_prefix,
787 char const *yydebug_suffix,
788 #endif
789 yytype_int16 **yybottom,
790 yytype_int16 *yybottom_no_free,
791 yytype_int16 **yytop, yytype_int16 *yytop_empty)
792 {
793 YYSIZE_T yysize_old =
794 *yytop == yytop_empty ? 0 : *yytop - *yybottom + 1;
795 YYSIZE_T yysize_new = yysize_old + yyadd;
796 if (*yycapacity < yysize_new)
797 {
798 YYSIZE_T yyalloc = 2 * yysize_new;
799 yytype_int16 *yybottom_new;
800 /* Use YYMAXDEPTH for maximum stack size given that the stack
801 should never need to grow larger than the main state stack
802 needs to grow without LAC. */
803 if (YYMAXDEPTH < yysize_new)
804 {
805 YYDPRINTF ((stderr, "%smax size exceeded%s", yydebug_prefix,
806 yydebug_suffix));
807 return 1;
808 }
809 if (YYMAXDEPTH < yyalloc)
810 yyalloc = YYMAXDEPTH;
811 yybottom_new =
812 (yytype_int16*) YYSTACK_ALLOC (yyalloc * sizeof *yybottom_new);
813 if (!yybottom_new)
814 {
815 YYDPRINTF ((stderr, "%srealloc failed%s", yydebug_prefix,
816 yydebug_suffix));
817 return 1;
818 }
819 if (*yytop != yytop_empty)
820 {
821 YYCOPY (yybottom_new, *yybottom, yysize_old);
822 *yytop = yybottom_new + (yysize_old - 1);
823 }
824 if (*yybottom != yybottom_no_free)
825 YYSTACK_FREE (*yybottom);
826 *yybottom = yybottom_new;
827 *yycapacity = yyalloc;]m4_if(b4_percent_define_get([[parse.lac.memory-trace]]),
828 [full], [[
829 YYDPRINTF ((stderr, "%srealloc to %lu%s", yydebug_prefix,
830 (unsigned long int) yyalloc, yydebug_suffix));]])[
831 }
832 return 0;
833 }
834
835 /* Establish the initial context for the current lookahead if no initial
836 context is currently established.
837
838 We define a context as a snapshot of the parser stacks. We define
839 the initial context for a lookahead as the context in which the
840 parser initially examines that lookahead in order to select a
841 syntactic action. Thus, if the lookahead eventually proves
842 syntactically unacceptable (possibly in a later context reached via a
843 series of reductions), the initial context can be used to determine
844 the exact set of tokens that would be syntactically acceptable in the
845 lookahead's place. Moreover, it is the context after which any
846 further semantic actions would be erroneous because they would be
847 determined by a syntactically unacceptable token.
848
849 YY_LAC_ESTABLISH should be invoked when a reduction is about to be
850 performed in an inconsistent state (which, for the purposes of LAC,
851 includes consistent states that don't know they're consistent because
852 their default reductions have been disabled). Iff there is a
853 lookahead token, it should also be invoked before reporting a syntax
854 error. This latter case is for the sake of the debugging output.
855
856 For parse.lac=full, the implementation of YY_LAC_ESTABLISH is as
857 follows. If no initial context is currently established for the
858 current lookahead, then check if that lookahead can eventually be
859 shifted if syntactic actions continue from the current context.
860 Report a syntax error if it cannot. */
861 #define YY_LAC_ESTABLISH \
862 do { \
863 if (!yy_lac_established) \
864 { \
865 YYDPRINTF ((stderr, \
866 "LAC: initial context established for %s\n", \
867 yytname[yytoken])); \
868 yy_lac_established = 1; \
869 { \
870 int yy_lac_status = \
871 yy_lac (yyesa, &yyes, &yyes_capacity, yyssp, yytoken); \
872 if (yy_lac_status == 2) \
873 goto yyexhaustedlab; \
874 if (yy_lac_status == 1) \
875 goto yyerrlab; \
876 } \
877 } \
878 } while (0)
879
880 /* Discard any previous initial lookahead context because of Event,
881 which may be a lookahead change or an invalidation of the currently
882 established initial context for the current lookahead.
883
884 The most common example of a lookahead change is a shift. An example
885 of both cases is syntax error recovery. That is, a syntax error
886 occurs when the lookahead is syntactically erroneous for the
887 currently established initial context, so error recovery manipulates
888 the parser stacks to try to find a new initial context in which the
889 current lookahead is syntactically acceptable. If it fails to find
890 such a context, it discards the lookahead. */
891 #if ]b4_api_PREFIX[DEBUG
892 # define YY_LAC_DISCARD(Event) \
893 do { \
894 if (yy_lac_established) \
895 { \
896 if (yydebug) \
897 YYFPRINTF (stderr, "LAC: initial context discarded due to " \
898 Event "\n"); \
899 yy_lac_established = 0; \
900 } \
901 } while (0)
902 #else
903 # define YY_LAC_DISCARD(Event) yy_lac_established = 0
904 #endif
905
906 /* Given the stack whose top is *YYSSP, return 0 iff YYTOKEN can
907 eventually (after perhaps some reductions) be shifted, return 1 if
908 not, or return 2 if memory is exhausted. As preconditions and
909 postconditions: *YYES_CAPACITY is the allocated size of the array to
910 which *YYES points, and either *YYES = YYESA or *YYES points to an
911 array allocated with YYSTACK_ALLOC. yy_lac may overwrite the
912 contents of either array, alter *YYES and *YYES_CAPACITY, and free
913 any old *YYES other than YYESA. */
914 static int
915 yy_lac (yytype_int16 *yyesa, yytype_int16 **yyes,
916 YYSIZE_T *yyes_capacity, yytype_int16 *yyssp, int yytoken)
917 {
918 yytype_int16 *yyes_prev = yyssp;
919 yytype_int16 *yyesp = yyes_prev;
920 YYDPRINTF ((stderr, "LAC: checking lookahead %s:", yytname[yytoken]));
921 if (yytoken == YYUNDEFTOK)
922 {
923 YYDPRINTF ((stderr, " Always Err\n"));
924 return 1;
925 }
926 while (1)
927 {
928 int yyrule = yypact[*yyesp];
929 if (yypact_value_is_default (yyrule)
930 || (yyrule += yytoken) < 0 || YYLAST < yyrule
931 || yycheck[yyrule] != yytoken)
932 {
933 yyrule = yydefact[*yyesp];
934 if (yyrule == 0)
935 {
936 YYDPRINTF ((stderr, " Err\n"));
937 return 1;
938 }
939 }
940 else
941 {
942 yyrule = yytable[yyrule];
943 if (yytable_value_is_error (yyrule))
944 {
945 YYDPRINTF ((stderr, " Err\n"));
946 return 1;
947 }
948 if (0 < yyrule)
949 {
950 YYDPRINTF ((stderr, " S%d\n", yyrule));
951 return 0;
952 }
953 yyrule = -yyrule;
954 }
955 {
956 YYSIZE_T yylen = yyr2[yyrule];
957 YYDPRINTF ((stderr, " R%d", yyrule - 1));
958 if (yyesp != yyes_prev)
959 {
960 YYSIZE_T yysize = yyesp - *yyes + 1;
961 if (yylen < yysize)
962 {
963 yyesp -= yylen;
964 yylen = 0;
965 }
966 else
967 {
968 yylen -= yysize;
969 yyesp = yyes_prev;
970 }
971 }
972 if (yylen)
973 yyesp = yyes_prev -= yylen;
974 }
975 {
976 int yystate;
977 {
978 int yylhs = yyr1[yyrule] - YYNTOKENS;
979 yystate = yypgoto[yylhs] + *yyesp;
980 if (yystate < 0 || YYLAST < yystate
981 || yycheck[yystate] != *yyesp)
982 yystate = yydefgoto[yylhs];
983 else
984 yystate = yytable[yystate];
985 }
986 if (yyesp == yyes_prev)
987 {
988 yyesp = *yyes;
989 *yyesp = yystate;
990 }
991 else
992 {
993 if (yy_lac_stack_realloc (yyes_capacity, 1,
994 #if ]b4_api_PREFIX[DEBUG
995 " (", ")",
996 #endif
997 yyes, yyesa, &yyesp, yyes_prev))
998 {
999 YYDPRINTF ((stderr, "\n"));
1000 return 2;
1001 }
1002 *++yyesp = yystate;
1003 }
1004 YYDPRINTF ((stderr, " G%d", yystate));
1005 }
1006 }
1007 }]])[
1008
1009
1010 #if YYERROR_VERBOSE
1011
1012 # ifndef yystrlen
1013 # if defined __GLIBC__ && defined _STRING_H
1014 # define yystrlen strlen
1015 # else
1016 /* Return the length of YYSTR. */
1017 ]b4_function_define([yystrlen], [static YYSIZE_T],
1018 [[const char *yystr], [yystr]])[
1019 {
1020 YYSIZE_T yylen;
1021 for (yylen = 0; yystr[yylen]; yylen++)
1022 continue;
1023 return yylen;
1024 }
1025 # endif
1026 # endif
1027
1028 # ifndef yystpcpy
1029 # if defined __GLIBC__ && defined _STRING_H && defined _GNU_SOURCE
1030 # define yystpcpy stpcpy
1031 # else
1032 /* Copy YYSRC to YYDEST, returning the address of the terminating '\0' in
1033 YYDEST. */
1034 ]b4_function_define([yystpcpy], [static char *],
1035 [[char *yydest], [yydest]], [[const char *yysrc], [yysrc]])[
1036 {
1037 char *yyd = yydest;
1038 const char *yys = yysrc;
1039
1040 while ((*yyd++ = *yys++) != '\0')
1041 continue;
1042
1043 return yyd - 1;
1044 }
1045 # endif
1046 # endif
1047
1048 # ifndef yytnamerr
1049 /* Copy to YYRES the contents of YYSTR after stripping away unnecessary
1050 quotes and backslashes, so that it's suitable for yyerror. The
1051 heuristic is that double-quoting is unnecessary unless the string
1052 contains an apostrophe, a comma, or backslash (other than
1053 backslash-backslash). YYSTR is taken from yytname. If YYRES is
1054 null, do not copy; instead, return the length of what the result
1055 would have been. */
1056 static YYSIZE_T
1057 yytnamerr (char *yyres, const char *yystr)
1058 {
1059 if (*yystr == '"')
1060 {
1061 YYSIZE_T yyn = 0;
1062 char const *yyp = yystr;
1063
1064 for (;;)
1065 switch (*++yyp)
1066 {
1067 case '\'':
1068 case ',':
1069 goto do_not_strip_quotes;
1070
1071 case '\\':
1072 if (*++yyp != '\\')
1073 goto do_not_strip_quotes;
1074 /* Fall through. */
1075 default:
1076 if (yyres)
1077 yyres[yyn] = *yyp;
1078 yyn++;
1079 break;
1080
1081 case '"':
1082 if (yyres)
1083 yyres[yyn] = '\0';
1084 return yyn;
1085 }
1086 do_not_strip_quotes: ;
1087 }
1088
1089 if (! yyres)
1090 return yystrlen (yystr);
1091
1092 return yystpcpy (yyres, yystr) - yyres;
1093 }
1094 # endif
1095
1096 /* Copy into *YYMSG, which is of size *YYMSG_ALLOC, an error message
1097 about the unexpected token YYTOKEN for the state stack whose top is
1098 YYSSP.]b4_lac_if([[ In order to see if a particular token T is a
1099 valid looakhead, invoke yy_lac (YYESA, YYES, YYES_CAPACITY, YYSSP, T).]])[
1100
1101 Return 0 if *YYMSG was successfully written. Return 1 if *YYMSG is
1102 not large enough to hold the message. In that case, also set
1103 *YYMSG_ALLOC to the required number of bytes. Return 2 if the
1104 required number of bytes is too large to store]b4_lac_if([[ or if
1105 yy_lac returned 2]])[. */
1106 static int
1107 yysyntax_error (YYSIZE_T *yymsg_alloc, char **yymsg,
1108 ]b4_lac_if([[yytype_int16 *yyesa, yytype_int16 **yyes,
1109 YYSIZE_T *yyes_capacity, ]])[yytype_int16 *yyssp, int yytoken)
1110 {
1111 YYSIZE_T yysize0 = yytnamerr (YY_NULL, yytname[yytoken]);
1112 YYSIZE_T yysize = yysize0;
1113 enum { YYERROR_VERBOSE_ARGS_MAXIMUM = 5 };
1114 /* Internationalized format string. */
1115 const char *yyformat = YY_NULL;
1116 /* Arguments of yyformat. */
1117 char const *yyarg[YYERROR_VERBOSE_ARGS_MAXIMUM];
1118 /* Number of reported tokens (one for the "unexpected", one per
1119 "expected"). */
1120 int yycount = 0;
1121
1122 /* There are many possibilities here to consider:
1123 - If this state is a consistent state with a default action, then
1124 the only way this function was invoked is if the default action
1125 is an error action. In that case, don't check for expected
1126 tokens because there are none.
1127 - The only way there can be no lookahead present (in yychar) is if
1128 this state is a consistent state with a default action. Thus,
1129 detecting the absence of a lookahead is sufficient to determine
1130 that there is no unexpected or expected token to report. In that
1131 case, just report a simple "syntax error".
1132 - Don't assume there isn't a lookahead just because this state is a
1133 consistent state with a default action. There might have been a
1134 previous inconsistent state, consistent state with a non-default
1135 action, or user semantic action that manipulated yychar.]b4_lac_if([[
1136 In the first two cases, it might appear that the current syntax
1137 error should have been detected in the previous state when yy_lac
1138 was invoked. However, at that time, there might have been a
1139 different syntax error that discarded a different initial context
1140 during error recovery, leaving behind the current lookahead.]], [[
1141 - Of course, the expected token list depends on states to have
1142 correct lookahead information, and it depends on the parser not
1143 to perform extra reductions after fetching a lookahead from the
1144 scanner and before detecting a syntax error. Thus, state merging
1145 (from LALR or IELR) and default reductions corrupt the expected
1146 token list. However, the list is correct for canonical LR with
1147 one exception: it will still contain any token that will not be
1148 accepted due to an error action in a later state.]])[
1149 */
1150 if (yytoken != YYEMPTY)
1151 {
1152 int yyn = yypact[*yyssp];]b4_lac_if([[
1153 YYDPRINTF ((stderr, "Constructing syntax error message\n"));]])[
1154 yyarg[yycount++] = yytname[yytoken];
1155 if (!yypact_value_is_default (yyn))
1156 {]b4_lac_if([], [[
1157 /* Start YYX at -YYN if negative to avoid negative indexes in
1158 YYCHECK. In other words, skip the first -YYN actions for
1159 this state because they are default actions. */
1160 int yyxbegin = yyn < 0 ? -yyn : 0;
1161 /* Stay within bounds of both yycheck and yytname. */
1162 int yychecklim = YYLAST - yyn + 1;
1163 int yyxend = yychecklim < YYNTOKENS ? yychecklim : YYNTOKENS;]])[
1164 int yyx;]b4_lac_if([[
1165
1166 for (yyx = 0; yyx < YYNTOKENS; ++yyx)
1167 if (yyx != YYTERROR && yyx != YYUNDEFTOK)
1168 {
1169 {
1170 int yy_lac_status = yy_lac (yyesa, yyes, yyes_capacity,
1171 yyssp, yyx);
1172 if (yy_lac_status == 2)
1173 return 2;
1174 if (yy_lac_status == 1)
1175 continue;
1176 }]], [[
1177
1178 for (yyx = yyxbegin; yyx < yyxend; ++yyx)
1179 if (yycheck[yyx + yyn] == yyx && yyx != YYTERROR
1180 && !yytable_value_is_error (yytable[yyx + yyn]))
1181 {]])[
1182 if (yycount == YYERROR_VERBOSE_ARGS_MAXIMUM)
1183 {
1184 yycount = 1;
1185 yysize = yysize0;
1186 break;
1187 }
1188 yyarg[yycount++] = yytname[yyx];
1189 {
1190 YYSIZE_T yysize1 = yysize + yytnamerr (YY_NULL, yytname[yyx]);
1191 if (! (yysize <= yysize1
1192 && yysize1 <= YYSTACK_ALLOC_MAXIMUM))
1193 return 2;
1194 yysize = yysize1;
1195 }
1196 }
1197 }]b4_lac_if([[
1198 # if ]b4_api_PREFIX[DEBUG
1199 else if (yydebug)
1200 YYFPRINTF (stderr, "No expected tokens.\n");
1201 # endif]])[
1202 }
1203
1204 switch (yycount)
1205 {
1206 # define YYCASE_(N, S) \
1207 case N: \
1208 yyformat = S; \
1209 break
1210 YYCASE_(0, YY_("syntax error"));
1211 YYCASE_(1, YY_("syntax error, unexpected %s"));
1212 YYCASE_(2, YY_("syntax error, unexpected %s, expecting %s"));
1213 YYCASE_(3, YY_("syntax error, unexpected %s, expecting %s or %s"));
1214 YYCASE_(4, YY_("syntax error, unexpected %s, expecting %s or %s or %s"));
1215 YYCASE_(5, YY_("syntax error, unexpected %s, expecting %s or %s or %s or %s"));
1216 # undef YYCASE_
1217 }
1218
1219 {
1220 YYSIZE_T yysize1 = yysize + yystrlen (yyformat);
1221 if (! (yysize <= yysize1 && yysize1 <= YYSTACK_ALLOC_MAXIMUM))
1222 return 2;
1223 yysize = yysize1;
1224 }
1225
1226 if (*yymsg_alloc < yysize)
1227 {
1228 *yymsg_alloc = 2 * yysize;
1229 if (! (yysize <= *yymsg_alloc
1230 && *yymsg_alloc <= YYSTACK_ALLOC_MAXIMUM))
1231 *yymsg_alloc = YYSTACK_ALLOC_MAXIMUM;
1232 return 1;
1233 }
1234
1235 /* Avoid sprintf, as that infringes on the user's name space.
1236 Don't have undefined behavior even if the translation
1237 produced a string with the wrong number of "%s"s. */
1238 {
1239 char *yyp = *yymsg;
1240 int yyi = 0;
1241 while ((*yyp = *yyformat) != '\0')
1242 if (*yyp == '%' && yyformat[1] == 's' && yyi < yycount)
1243 {
1244 yyp += yytnamerr (yyp, yyarg[yyi++]);
1245 yyformat += 2;
1246 }
1247 else
1248 {
1249 yyp++;
1250 yyformat++;
1251 }
1252 }
1253 return 0;
1254 }
1255 #endif /* YYERROR_VERBOSE */
1256
1257 ]b4_yydestruct_define[
1258
1259 ]b4_pure_if([], [
1260
1261 b4_declare_scanner_communication_variables])[]b4_push_if([[
1262
1263 struct yypstate
1264 {]b4_declare_parser_state_variables[
1265 /* Used to determine if this is the first time this instance has
1266 been used. */
1267 int yynew;
1268 };]b4_pure_if([], [[
1269
1270 static char yypstate_allocated = 0;]])b4_pull_if([
1271
1272 b4_function_define([[yyparse]], [[int]], b4_parse_param)[
1273 {
1274 return yypull_parse (YY_NULL]m4_ifset([b4_parse_param],
1275 [[, ]b4_args(b4_parse_param)])[);
1276 }
1277
1278 ]b4_function_define([[yypull_parse]], [[int]],
1279 [[[yypstate *yyps]], [[yyps]]]m4_ifset([b4_parse_param], [,
1280 b4_parse_param]))[
1281 {
1282 int yystatus;
1283 yypstate *yyps_local;]b4_pure_if([[
1284 int yychar;
1285 YYSTYPE yylval;]b4_locations_if([[
1286 static YYLTYPE yyloc_default][]b4_yyloc_default[;
1287 YYLTYPE yylloc = yyloc_default;]])])[
1288 if (yyps)
1289 yyps_local = yyps;
1290 else
1291 {
1292 yyps_local = yypstate_new ();
1293 if (!yyps_local)
1294 {]b4_pure_if([[
1295 yyerror (]b4_yyerror_args[YY_("memory exhausted"));]], [[
1296 if (!yypstate_allocated)
1297 yyerror (]b4_yyerror_args[YY_("memory exhausted"));]])[
1298 return 2;
1299 }
1300 }
1301 do {
1302 yychar = ]b4_lex[;
1303 yystatus =
1304 yypush_parse (yyps_local]b4_pure_if([[, yychar, &yylval]b4_locations_if([[, &yylloc]])])m4_ifset([b4_parse_param], [, b4_args(b4_parse_param)])[);
1305 } while (yystatus == YYPUSH_MORE);
1306 if (!yyps)
1307 yypstate_delete (yyps_local);
1308 return yystatus;
1309 }]])[
1310
1311 /* Initialize the parser data structure. */
1312 ]b4_function_define([[yypstate_new]], [[yypstate *]])[
1313 {
1314 yypstate *yyps;]b4_pure_if([], [[
1315 if (yypstate_allocated)
1316 return YY_NULL;]])[
1317 yyps = (yypstate *) malloc (sizeof *yyps);
1318 if (!yyps)
1319 return YY_NULL;
1320 yyps->yynew = 1;]b4_pure_if([], [[
1321 yypstate_allocated = 1;]])[
1322 return yyps;
1323 }
1324
1325 ]b4_function_define([[yypstate_delete]], [[void]],
1326 [[[yypstate *yyps]], [[yyps]]])[
1327 {
1328 #ifndef yyoverflow
1329 /* If the stack was reallocated but the parse did not complete, then the
1330 stack still needs to be freed. */
1331 if (!yyps->yynew && yyps->yyss != yyps->yyssa)
1332 YYSTACK_FREE (yyps->yyss);
1333 #endif]b4_lac_if([[
1334 if (!yyps->yynew && yyps->yyes != yyps->yyesa)
1335 YYSTACK_FREE (yyps->yyes);]])[
1336 free (yyps);]b4_pure_if([], [[
1337 yypstate_allocated = 0;]])[
1338 }
1339 ]b4_pure_if([[
1340 #define ]b4_prefix[nerrs yyps->]b4_prefix[nerrs]])[
1341 #define yystate yyps->yystate
1342 #define yyerrstatus yyps->yyerrstatus
1343 #define yyssa yyps->yyssa
1344 #define yyss yyps->yyss
1345 #define yyssp yyps->yyssp
1346 #define yyvsa yyps->yyvsa
1347 #define yyvs yyps->yyvs
1348 #define yyvsp yyps->yyvsp]b4_locations_if([[
1349 #define yylsa yyps->yylsa
1350 #define yyls yyps->yyls
1351 #define yylsp yyps->yylsp
1352 #define yyerror_range yyps->yyerror_range]])[
1353 #define yystacksize yyps->yystacksize]b4_lac_if([[
1354 #define yyesa yyps->yyesa
1355 #define yyes yyps->yyes
1356 #define yyes_capacity yyps->yyes_capacity]])[
1357
1358
1359 /*---------------.
1360 | yypush_parse. |
1361 `---------------*/
1362
1363 ]b4_function_define([[yypush_parse]], [[int]],
1364 [[[yypstate *yyps]], [[yyps]]]b4_pure_if([,
1365 [[[int yypushed_char]], [[yypushed_char]]],
1366 [[[YYSTYPE const *yypushed_val]], [[yypushed_val]]]b4_locations_if([,
1367 [[[YYLTYPE *yypushed_loc]], [[yypushed_loc]]]])])m4_ifset([b4_parse_param], [,
1368 b4_parse_param]))], [[
1369
1370
1371 /*----------.
1372 | yyparse. |
1373 `----------*/
1374
1375 ]b4_function_define([yyparse], [int], b4_parse_param)])[
1376 {]b4_pure_if([b4_declare_scanner_communication_variables
1377 ])b4_push_if([b4_pure_if([], [[
1378 int yypushed_char = yychar;
1379 YYSTYPE yypushed_val = yylval;]b4_locations_if([[
1380 YYLTYPE yypushed_loc = yylloc;]])
1381 ])],
1382 [b4_declare_parser_state_variables
1383 ])b4_lac_if([[
1384 int yy_lac_established = 0;]])[
1385 int yyn;
1386 int yyresult;
1387 /* Lookahead token as an internal (translated) token number. */
1388 int yytoken = 0;
1389 /* The variables used to return semantic value and location from the
1390 action routines. */
1391 YYSTYPE yyval;]b4_locations_if([[
1392 YYLTYPE yyloc;]])[
1393
1394 #if YYERROR_VERBOSE
1395 /* Buffer for error messages, and its allocated size. */
1396 char yymsgbuf[128];
1397 char *yymsg = yymsgbuf;
1398 YYSIZE_T yymsg_alloc = sizeof yymsgbuf;
1399 #endif
1400
1401 #define YYPOPSTACK(N) (yyvsp -= (N), yyssp -= (N)]b4_locations_if([, yylsp -= (N)])[)
1402
1403 /* The number of symbols on the RHS of the reduced rule.
1404 Keep to zero when no symbol should be popped. */
1405 int yylen = 0;]b4_push_if([[
1406
1407 if (!yyps->yynew)
1408 {
1409 yyn = yypact[yystate];
1410 goto yyread_pushed_token;
1411 }]])[
1412
1413 yyssp = yyss = yyssa;
1414 yyvsp = yyvs = yyvsa;]b4_locations_if([[
1415 yylsp = yyls = yylsa;]])[
1416 yystacksize = YYINITDEPTH;]b4_lac_if([[
1417
1418 yyes = yyesa;
1419 yyes_capacity = sizeof yyesa / sizeof *yyes;
1420 if (YYMAXDEPTH < yyes_capacity)
1421 yyes_capacity = YYMAXDEPTH;]])[
1422
1423 YYDPRINTF ((stderr, "Starting parse\n"));
1424
1425 yystate = 0;
1426 yyerrstatus = 0;
1427 yynerrs = 0;
1428 yychar = YYEMPTY; /* Cause a token to be read. */
1429 ]m4_ifdef([b4_initial_action], [
1430 b4_dollar_pushdef([m4_define([b4_dollar_dollar_used])yylval], [],
1431 [b4_push_if([b4_pure_if([*])yypushed_loc], [yylloc])])dnl
1432 /* User initialization code. */
1433 b4_user_initial_action
1434 b4_dollar_popdef[]dnl
1435 m4_ifdef([b4_dollar_dollar_used],[[ yyvsp[0] = yylval;
1436 ]])])dnl
1437 b4_locations_if([[ yylsp[0] = ]b4_push_if([b4_pure_if([*])yypushed_loc], [yylloc])[;
1438 ]])dnl
1439 [ goto yysetstate;
1440
1441 /*------------------------------------------------------------.
1442 | yynewstate -- Push a new state, which is found in yystate. |
1443 `------------------------------------------------------------*/
1444 yynewstate:
1445 /* In all cases, when you get here, the value and location stacks
1446 have just been pushed. So pushing a state here evens the stacks. */
1447 yyssp++;
1448
1449 yysetstate:
1450 *yyssp = yystate;
1451
1452 if (yyss + yystacksize - 1 <= yyssp)
1453 {
1454 /* Get the current used size of the three stacks, in elements. */
1455 YYSIZE_T yysize = yyssp - yyss + 1;
1456
1457 #ifdef yyoverflow
1458 {
1459 /* Give user a chance to reallocate the stack. Use copies of
1460 these so that the &'s don't force the real ones into
1461 memory. */
1462 YYSTYPE *yyvs1 = yyvs;
1463 yytype_int16 *yyss1 = yyss;]b4_locations_if([
1464 YYLTYPE *yyls1 = yyls;])[
1465
1466 /* Each stack pointer address is followed by the size of the
1467 data in use in that stack, in bytes. This used to be a
1468 conditional around just the two extra args, but that might
1469 be undefined if yyoverflow is a macro. */
1470 yyoverflow (YY_("memory exhausted"),
1471 &yyss1, yysize * sizeof (*yyssp),
1472 &yyvs1, yysize * sizeof (*yyvsp),]b4_locations_if([
1473 &yyls1, yysize * sizeof (*yylsp),])[
1474 &yystacksize);
1475 ]b4_locations_if([
1476 yyls = yyls1;])[
1477 yyss = yyss1;
1478 yyvs = yyvs1;
1479 }
1480 #else /* no yyoverflow */
1481 # ifndef YYSTACK_RELOCATE
1482 goto yyexhaustedlab;
1483 # else
1484 /* Extend the stack our own way. */
1485 if (YYMAXDEPTH <= yystacksize)
1486 goto yyexhaustedlab;
1487 yystacksize *= 2;
1488 if (YYMAXDEPTH < yystacksize)
1489 yystacksize = YYMAXDEPTH;
1490
1491 {
1492 yytype_int16 *yyss1 = yyss;
1493 union yyalloc *yyptr =
1494 (union yyalloc *) YYSTACK_ALLOC (YYSTACK_BYTES (yystacksize));
1495 if (! yyptr)
1496 goto yyexhaustedlab;
1497 YYSTACK_RELOCATE (yyss_alloc, yyss);
1498 YYSTACK_RELOCATE (yyvs_alloc, yyvs);]b4_locations_if([
1499 YYSTACK_RELOCATE (yyls_alloc, yyls);])[
1500 # undef YYSTACK_RELOCATE
1501 if (yyss1 != yyssa)
1502 YYSTACK_FREE (yyss1);
1503 }
1504 # endif
1505 #endif /* no yyoverflow */
1506
1507 yyssp = yyss + yysize - 1;
1508 yyvsp = yyvs + yysize - 1;]b4_locations_if([
1509 yylsp = yyls + yysize - 1;])[
1510
1511 YYDPRINTF ((stderr, "Stack size increased to %lu\n",
1512 (unsigned long int) yystacksize));
1513
1514 if (yyss + yystacksize - 1 <= yyssp)
1515 YYABORT;
1516 }
1517
1518 YYDPRINTF ((stderr, "Entering state %d\n", yystate));
1519
1520 if (yystate == YYFINAL)
1521 YYACCEPT;
1522
1523 goto yybackup;
1524
1525 /*-----------.
1526 | yybackup. |
1527 `-----------*/
1528 yybackup:
1529
1530 /* Do appropriate processing given the current state. Read a
1531 lookahead token if we need one and don't already have one. */
1532
1533 /* First try to decide what to do without reference to lookahead token. */
1534 yyn = yypact[yystate];
1535 if (yypact_value_is_default (yyn))
1536 goto yydefault;
1537
1538 /* Not known => get a lookahead token if don't already have one. */
1539
1540 /* YYCHAR is either YYEMPTY or YYEOF or a valid lookahead symbol. */
1541 if (yychar == YYEMPTY)
1542 {]b4_push_if([[
1543 if (!yyps->yynew)
1544 {]b4_use_push_for_pull_if([], [[
1545 YYDPRINTF ((stderr, "Return for a new token:\n"));]])[
1546 yyresult = YYPUSH_MORE;
1547 goto yypushreturn;
1548 }
1549 yyps->yynew = 0;]b4_pure_if([], [[
1550 /* Restoring the pushed token is only necessary for the first
1551 yypush_parse invocation since subsequent invocations don't overwrite
1552 it before jumping to yyread_pushed_token. */
1553 yychar = yypushed_char;
1554 yylval = yypushed_val;]b4_locations_if([[
1555 yylloc = yypushed_loc;]])])[
1556 yyread_pushed_token:]])[
1557 YYDPRINTF ((stderr, "Reading a token: "));]b4_push_if([b4_pure_if([[
1558 yychar = yypushed_char;
1559 if (yypushed_val)
1560 yylval = *yypushed_val;]b4_locations_if([[
1561 if (yypushed_loc)
1562 yylloc = *yypushed_loc;]])])], [[
1563 yychar = ]b4_lex[;]])[
1564 }
1565
1566 if (yychar <= YYEOF)
1567 {
1568 yychar = yytoken = YYEOF;
1569 YYDPRINTF ((stderr, "Now at end of input.\n"));
1570 }
1571 else
1572 {
1573 yytoken = YYTRANSLATE (yychar);
1574 YY_SYMBOL_PRINT ("Next token is", yytoken, &yylval, &yylloc);
1575 }
1576
1577 /* If the proper action on seeing token YYTOKEN is to reduce or to
1578 detect an error, take that action. */
1579 yyn += yytoken;
1580 if (yyn < 0 || YYLAST < yyn || yycheck[yyn] != yytoken)]b4_lac_if([[
1581 {
1582 YY_LAC_ESTABLISH;
1583 goto yydefault;
1584 }]], [[
1585 goto yydefault;]])[
1586 yyn = yytable[yyn];
1587 if (yyn <= 0)
1588 {
1589 if (yytable_value_is_error (yyn))
1590 goto yyerrlab;]b4_lac_if([[
1591 YY_LAC_ESTABLISH;]])[
1592 yyn = -yyn;
1593 goto yyreduce;
1594 }
1595
1596 /* Count tokens shifted since error; after three, turn off error
1597 status. */
1598 if (yyerrstatus)
1599 yyerrstatus--;
1600
1601 /* Shift the lookahead token. */
1602 YY_SYMBOL_PRINT ("Shifting", yytoken, &yylval, &yylloc);
1603
1604 /* Discard the shifted token. */
1605 yychar = YYEMPTY;]b4_lac_if([[
1606 YY_LAC_DISCARD ("shift");]])[
1607
1608 yystate = yyn;
1609 YY_IGNORE_MAYBE_UNINITIALIZED_BEGIN
1610 *++yyvsp = yylval;
1611 YY_IGNORE_MAYBE_UNINITIALIZED_END
1612 ]b4_locations_if([ *++yylsp = yylloc;])[
1613 goto yynewstate;
1614
1615
1616 /*-----------------------------------------------------------.
1617 | yydefault -- do the default action for the current state. |
1618 `-----------------------------------------------------------*/
1619 yydefault:
1620 yyn = yydefact[yystate];
1621 if (yyn == 0)
1622 goto yyerrlab;
1623 goto yyreduce;
1624
1625
1626 /*-----------------------------.
1627 | yyreduce -- Do a reduction. |
1628 `-----------------------------*/
1629 yyreduce:
1630 /* yyn is the number of a rule to reduce with. */
1631 yylen = yyr2[yyn];
1632
1633 /* If YYLEN is nonzero, implement the default value of the action:
1634 '$$ = $1'.
1635
1636 Otherwise, the following line sets YYVAL to garbage.
1637 This behavior is undocumented and Bison
1638 users should not rely upon it. Assigning to YYVAL
1639 unconditionally makes the parser a bit smaller, and it avoids a
1640 GCC warning that YYVAL may be used uninitialized. */
1641 yyval = yyvsp[1-yylen];
1642
1643 ]b4_locations_if(
1644 [[ /* Default location. */
1645 YYLLOC_DEFAULT (yyloc, (yylsp - yylen), yylen);]])[
1646 YY_REDUCE_PRINT (yyn);]b4_lac_if([[
1647 {
1648 int yychar_backup = yychar;
1649 switch (yyn)
1650 {
1651 ]b4_user_actions[
1652 default: break;
1653 }
1654 if (yychar_backup != yychar)
1655 YY_LAC_DISCARD ("yychar change");
1656 }]], [[
1657 switch (yyn)
1658 {
1659 ]b4_user_actions[
1660 default: break;
1661 }]])[
1662 /* User semantic actions sometimes alter yychar, and that requires
1663 that yytoken be updated with the new translation. We take the
1664 approach of translating immediately before every use of yytoken.
1665 One alternative is translating here after every semantic action,
1666 but that translation would be missed if the semantic action invokes
1667 YYABORT, YYACCEPT, or YYERROR immediately after altering yychar or
1668 if it invokes YYBACKUP. In the case of YYABORT or YYACCEPT, an
1669 incorrect destructor might then be invoked immediately. In the
1670 case of YYERROR or YYBACKUP, subsequent parser actions might lead
1671 to an incorrect destructor call or verbose syntax error message
1672 before the lookahead is translated. */
1673 YY_SYMBOL_PRINT ("-> $$ =", yyr1[yyn], &yyval, &yyloc);
1674
1675 YYPOPSTACK (yylen);
1676 yylen = 0;
1677 YY_STACK_PRINT (yyss, yyssp);
1678
1679 *++yyvsp = yyval;]b4_locations_if([
1680 *++yylsp = yyloc;])[
1681
1682 /* Now 'shift' the result of the reduction. Determine what state
1683 that goes to, based on the state we popped back to and the rule
1684 number reduced by. */
1685
1686 yyn = yyr1[yyn];
1687
1688 yystate = yypgoto[yyn - YYNTOKENS] + *yyssp;
1689 if (0 <= yystate && yystate <= YYLAST && yycheck[yystate] == *yyssp)
1690 yystate = yytable[yystate];
1691 else
1692 yystate = yydefgoto[yyn - YYNTOKENS];
1693
1694 goto yynewstate;
1695
1696
1697 /*--------------------------------------.
1698 | yyerrlab -- here on detecting error. |
1699 `--------------------------------------*/
1700 yyerrlab:
1701 /* Make sure we have latest lookahead translation. See comments at
1702 user semantic actions for why this is necessary. */
1703 yytoken = yychar == YYEMPTY ? YYEMPTY : YYTRANSLATE (yychar);
1704
1705 /* If not already recovering from an error, report this error. */
1706 if (!yyerrstatus)
1707 {
1708 ++yynerrs;
1709 #if ! YYERROR_VERBOSE
1710 yyerror (]b4_yyerror_args[YY_("syntax error"));
1711 #else
1712 # define YYSYNTAX_ERROR yysyntax_error (&yymsg_alloc, &yymsg, \]b4_lac_if([[
1713 yyesa, &yyes, &yyes_capacity, \]])[
1714 yyssp, yytoken)
1715 {
1716 char const *yymsgp = YY_("syntax error");
1717 int yysyntax_error_status;]b4_lac_if([[
1718 if (yychar != YYEMPTY)
1719 YY_LAC_ESTABLISH;]])[
1720 yysyntax_error_status = YYSYNTAX_ERROR;
1721 if (yysyntax_error_status == 0)
1722 yymsgp = yymsg;
1723 else if (yysyntax_error_status == 1)
1724 {
1725 if (yymsg != yymsgbuf)
1726 YYSTACK_FREE (yymsg);
1727 yymsg = (char *) YYSTACK_ALLOC (yymsg_alloc);
1728 if (!yymsg)
1729 {
1730 yymsg = yymsgbuf;
1731 yymsg_alloc = sizeof yymsgbuf;
1732 yysyntax_error_status = 2;
1733 }
1734 else
1735 {
1736 yysyntax_error_status = YYSYNTAX_ERROR;
1737 yymsgp = yymsg;
1738 }
1739 }
1740 yyerror (]b4_yyerror_args[yymsgp);
1741 if (yysyntax_error_status == 2)
1742 goto yyexhaustedlab;
1743 }
1744 # undef YYSYNTAX_ERROR
1745 #endif
1746 }
1747
1748 ]b4_locations_if([[ yyerror_range[1] = yylloc;]])[
1749
1750 if (yyerrstatus == 3)
1751 {
1752 /* If just tried and failed to reuse lookahead token after an
1753 error, discard it. */
1754
1755 if (yychar <= YYEOF)
1756 {
1757 /* Return failure if at end of input. */
1758 if (yychar == YYEOF)
1759 YYABORT;
1760 }
1761 else
1762 {
1763 yydestruct ("Error: discarding",
1764 yytoken, &yylval]b4_locations_if([, &yylloc])[]b4_user_args[);
1765 yychar = YYEMPTY;
1766 }
1767 }
1768
1769 /* Else will try to reuse lookahead token after shifting the error
1770 token. */
1771 goto yyerrlab1;
1772
1773
1774 /*---------------------------------------------------.
1775 | yyerrorlab -- error raised explicitly by YYERROR. |
1776 `---------------------------------------------------*/
1777 yyerrorlab:
1778
1779 /* Pacify compilers like GCC when the user code never invokes
1780 YYERROR and the label yyerrorlab therefore never appears in user
1781 code. */
1782 if (/*CONSTCOND*/ 0)
1783 goto yyerrorlab;
1784
1785 ]b4_locations_if([[ yyerror_range[1] = yylsp[1-yylen];
1786 ]])[ /* Do not reclaim the symbols of the rule whose action triggered
1787 this YYERROR. */
1788 YYPOPSTACK (yylen);
1789 yylen = 0;
1790 YY_STACK_PRINT (yyss, yyssp);
1791 yystate = *yyssp;
1792 goto yyerrlab1;
1793
1794
1795 /*-------------------------------------------------------------.
1796 | yyerrlab1 -- common code for both syntax error and YYERROR. |
1797 `-------------------------------------------------------------*/
1798 yyerrlab1:
1799 yyerrstatus = 3; /* Each real token shifted decrements this. */
1800
1801 for (;;)
1802 {
1803 yyn = yypact[yystate];
1804 if (!yypact_value_is_default (yyn))
1805 {
1806 yyn += YYTERROR;
1807 if (0 <= yyn && yyn <= YYLAST && yycheck[yyn] == YYTERROR)
1808 {
1809 yyn = yytable[yyn];
1810 if (0 < yyn)
1811 break;
1812 }
1813 }
1814
1815 /* Pop the current state because it cannot handle the error token. */
1816 if (yyssp == yyss)
1817 YYABORT;
1818
1819 ]b4_locations_if([[ yyerror_range[1] = *yylsp;]])[
1820 yydestruct ("Error: popping",
1821 yystos[yystate], yyvsp]b4_locations_if([, yylsp])[]b4_user_args[);
1822 YYPOPSTACK (1);
1823 yystate = *yyssp;
1824 YY_STACK_PRINT (yyss, yyssp);
1825 }]b4_lac_if([[
1826
1827 /* If the stack popping above didn't lose the initial context for the
1828 current lookahead token, the shift below will for sure. */
1829 YY_LAC_DISCARD ("error recovery");]])[
1830
1831 YY_IGNORE_MAYBE_UNINITIALIZED_BEGIN
1832 *++yyvsp = yylval;
1833 YY_IGNORE_MAYBE_UNINITIALIZED_END
1834 ]b4_locations_if([[
1835 yyerror_range[2] = yylloc;
1836 /* Using YYLLOC is tempting, but would change the location of
1837 the lookahead. YYLOC is available though. */
1838 YYLLOC_DEFAULT (yyloc, yyerror_range, 2);
1839 *++yylsp = yyloc;]])[
1840
1841 /* Shift the error token. */
1842 YY_SYMBOL_PRINT ("Shifting", yystos[yyn], yyvsp, yylsp);
1843
1844 yystate = yyn;
1845 goto yynewstate;
1846
1847
1848 /*-------------------------------------.
1849 | yyacceptlab -- YYACCEPT comes here. |
1850 `-------------------------------------*/
1851 yyacceptlab:
1852 yyresult = 0;
1853 goto yyreturn;
1854
1855 /*-----------------------------------.
1856 | yyabortlab -- YYABORT comes here. |
1857 `-----------------------------------*/
1858 yyabortlab:
1859 yyresult = 1;
1860 goto yyreturn;
1861
1862 #if ]b4_lac_if([[1]], [[!defined yyoverflow || YYERROR_VERBOSE]])[
1863 /*-------------------------------------------------.
1864 | yyexhaustedlab -- memory exhaustion comes here. |
1865 `-------------------------------------------------*/
1866 yyexhaustedlab:
1867 yyerror (]b4_yyerror_args[YY_("memory exhausted"));
1868 yyresult = 2;
1869 /* Fall through. */
1870 #endif
1871
1872 yyreturn:
1873 if (yychar != YYEMPTY)
1874 {
1875 /* Make sure we have latest lookahead translation. See comments at
1876 user semantic actions for why this is necessary. */
1877 yytoken = YYTRANSLATE (yychar);
1878 yydestruct ("Cleanup: discarding lookahead",
1879 yytoken, &yylval]b4_locations_if([, &yylloc])[]b4_user_args[);
1880 }
1881 /* Do not reclaim the symbols of the rule whose action triggered
1882 this YYABORT or YYACCEPT. */
1883 YYPOPSTACK (yylen);
1884 YY_STACK_PRINT (yyss, yyssp);
1885 while (yyssp != yyss)
1886 {
1887 yydestruct ("Cleanup: popping",
1888 yystos[*yyssp], yyvsp]b4_locations_if([, yylsp])[]b4_user_args[);
1889 YYPOPSTACK (1);
1890 }
1891 #ifndef yyoverflow
1892 if (yyss != yyssa)
1893 YYSTACK_FREE (yyss);
1894 #endif]b4_lac_if([[
1895 if (yyes != yyesa)
1896 YYSTACK_FREE (yyes);]])b4_push_if([[
1897 yyps->yynew = 1;
1898
1899 yypushreturn:]])[
1900 #if YYERROR_VERBOSE
1901 if (yymsg != yymsgbuf)
1902 YYSTACK_FREE (yymsg);
1903 #endif
1904 return yyresult;
1905 }
1906 ]b4_epilogue[]dnl
1907 b4_output_end()
1908
1909 b4_defines_if(
1910 [b4_output_begin([b4_spec_defines_file])[
1911 ]b4_copyright([Bison interface for Yacc-like parsers in C])[
1912
1913 ]b4_shared_declarations[
1914 ]b4_output_end()
1915 ])# b4_defines_if
bison