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1 m4_divert(-1) -*- C -*-
2
3 # Yacc compatible skeleton for Bison
4
5 # Copyright (C) 1984, 1989, 1990, 2000, 2001, 2002, 2003, 2004, 2005, 2006
6 # Free Software Foundation, Inc.
7
8 # This program is free software; you can redistribute it and/or modify
9 # it under the terms of the GNU General Public License as published by
10 # the Free Software Foundation; either version 2 of the License, or
11 # (at your option) any later version.
12
13 # This program is distributed in the hope that it will be useful,
14 # but WITHOUT ANY WARRANTY; without even the implied warranty of
15 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 # GNU General Public License for more details.
17
18 # You should have received a copy of the GNU General Public License
19 # along with this program; if not, write to the Free Software
20 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
21 # 02110-1301 USA
22
23 m4_include(b4_pkgdatadir/[c.m4])
24
25 ## ---------------- ##
26 ## Default values. ##
27 ## ---------------- ##
28
29 # Stack parameters.
30 m4_define_default([b4_stack_depth_max], [10000])
31 m4_define_default([b4_stack_depth_init], [200])
32
33
34 ## ------------------------ ##
35 ## Pure/impure interfaces. ##
36 ## ------------------------ ##
37
38
39 # b4_yacc_pure_if(IF-TRUE, IF-FALSE)
40 # ----------------------------------
41 # Expand IF-TRUE, if %pure-parser and %parse-param, IF-FALSE otherwise.
42 m4_define([b4_yacc_pure_if],
43 [b4_pure_if([m4_ifset([b4_parse_param],
44 [$1], [$2])],
45 [$2])])
46
47
48 # b4_yyerror_args
49 # ---------------
50 # Arguments passed to yyerror: user args plus yylloc.
51 m4_define([b4_yyerror_args],
52 [b4_yacc_pure_if([b4_locations_if([&yylloc, ])])dnl
53 m4_ifset([b4_parse_param], [b4_c_args(b4_parse_param), ])])
54
55
56 # b4_lex_param
57 # ------------
58 # Accumulate in b4_lex_param all the yylex arguments.
59 # b4_lex_param arrives quoted twice, but we want to keep only one level.
60 m4_define([b4_lex_param],
61 m4_dquote(b4_pure_if([[[[YYSTYPE *]], [[&yylval]]][]dnl
62 b4_locations_if([, [[YYLTYPE *], [&yylloc]]])m4_ifdef([b4_lex_param], [, ])])dnl
63 m4_ifdef([b4_lex_param], b4_lex_param)))
64
65
66
67 ## ------------ ##
68 ## Data Types. ##
69 ## ------------ ##
70
71 # b4_int_type(MIN, MAX)
72 # ---------------------
73 # Return the smallest int type able to handle numbers ranging from
74 # MIN to MAX (included). Overwrite the version from c.m4, which
75 # uses only C89 types, so that the user can override the shorter
76 # types, and so that pre-C89 compilers are handled correctly.
77 m4_define([b4_int_type],
78 [m4_if(b4_ints_in($@, [0], [255]), [1], [yytype_uint8],
79 b4_ints_in($@, [-128], [127]), [1], [yytype_int8],
80
81 b4_ints_in($@, [0], [65535]), [1], [yytype_uint16],
82 b4_ints_in($@, [-32768], [32767]), [1], [yytype_int16],
83
84 m4_eval([0 <= $1]), [1], [unsigned int],
85
86 [int])])
87
88
89 ## ----------------- ##
90 ## Semantic Values. ##
91 ## ----------------- ##
92
93
94 # b4_lhs_value([TYPE])
95 # --------------------
96 # Expansion of $<TYPE>$.
97 m4_define([b4_lhs_value],
98 [(yyval[]m4_ifval([$1], [.$1]))])
99
100
101 # b4_rhs_value(RULE-LENGTH, NUM, [TYPE])
102 # --------------------------------------
103 # Expansion of $<TYPE>NUM, where the current rule has RULE-LENGTH
104 # symbols on RHS.
105 m4_define([b4_rhs_value],
106 [(yyvsp@{($2) - ($1)@}m4_ifval([$3], [.$3]))])
107
108
109
110 ## ----------- ##
111 ## Locations. ##
112 ## ----------- ##
113
114 # b4_lhs_location()
115 # -----------------
116 # Expansion of @$.
117 m4_define([b4_lhs_location],
118 [(yyloc)])
119
120
121 # b4_rhs_location(RULE-LENGTH, NUM)
122 # ---------------------------------
123 # Expansion of @NUM, where the current rule has RULE-LENGTH symbols
124 # on RHS.
125 m4_define([b4_rhs_location],
126 [(yylsp@{($2) - ($1)@})])
127
128
129
130 ## --------------------------------------------------------- ##
131 ## Defining symbol actions, e.g., printers and destructors. ##
132 ## --------------------------------------------------------- ##
133
134 # We do want M4 expansion after # for CPP macros.
135 m4_changecom()
136 m4_divert(0)dnl
137 @output @output_parser_name@
138 b4_copyright([Skeleton implementation for Bison's Yacc-like parsers in C],dnl '
139 [1984, 1989, 1990, 2000, 2001, 2002, 2003, 2004, 2005, 2006])[
140
141 /* C LALR(1) parser skeleton written by Richard Stallman, by
142 simplifying the original so-called "semantic" parser. */
143
144 /* All symbols defined below should begin with yy or YY, to avoid
145 infringing on user name space. This should be done even for local
146 variables, as they might otherwise be expanded by user macros.
147 There are some unavoidable exceptions within include files to
148 define necessary library symbols; they are noted "INFRINGES ON
149 USER NAME SPACE" below. */
150
151 ]b4_identification
152 m4_if(b4_prefix, [yy], [],
153 [/* Substitute the variable and function names. */
154 #define yyparse b4_prefix[]parse
155 #define yypushparse b4_prefix[]pushparse
156 #define yypvarsinit b4_prefix[]pvarsinit
157 #define yypvars b4_prefix[]pvars
158 #define yylex b4_prefix[]lex
159 #define yyerror b4_prefix[]error
160 #define yylval b4_prefix[]lval
161 #define yychar b4_prefix[]char
162 #define yydebug b4_prefix[]debug
163 #define yynerrs b4_prefix[]nerrs
164 b4_locations_if([#define yylloc b4_prefix[]lloc])
165 b4_push_if([#define yyresult_get b4_prefix[]result_get
166 #define yychar_set b4_prefix[]char_set
167 #define yylval_set b4_prefix[]lval_set
168 #define yylloc_set b4_prefix[]lloc_set])])[
169
170 /* Copy the first part of user declarations. */
171 ]b4_pre_prologue[
172
173 /* Enabling traces. */
174 #ifndef YYDEBUG
175 # define YYDEBUG ]b4_debug_flag[
176 #endif
177
178 /* Enabling verbose error messages. */
179 #ifdef YYERROR_VERBOSE
180 # undef YYERROR_VERBOSE
181 # define YYERROR_VERBOSE 1
182 #else
183 # define YYERROR_VERBOSE ]b4_error_verbose_flag[
184 #endif
185
186 /* Enabling the token table. */
187 #ifndef YYTOKEN_TABLE
188 # define YYTOKEN_TABLE ]b4_token_table[
189 #endif
190
191 ]m4_ifdef([b4_start_header],
192 [[/* Copy the %start-header blocks. */
193 ]b4_start_header])[]dnl
194
195 b4_token_enums_defines(b4_tokens)[
196
197 #if ! defined YYSTYPE && ! defined YYSTYPE_IS_DECLARED
198 ]m4_ifdef([b4_stype],
199 [[typedef union ]b4_union_name[
200 ]b4_user_stype[
201 YYSTYPE;
202 # define YYSTYPE_IS_TRIVIAL 1]],
203 [m4_if(b4_tag_seen_flag, 0,
204 [[typedef int YYSTYPE;
205 # define YYSTYPE_IS_TRIVIAL 1]])])[
206 # define yystype YYSTYPE /* obsolescent; will be withdrawn */
207 # define YYSTYPE_IS_DECLARED 1
208 #endif
209
210 ]b4_locations_if([#if ! defined YYLTYPE && ! defined YYLTYPE_IS_DECLARED
211 typedef struct YYLTYPE
212 {
213 int first_line;
214 int first_column;
215 int last_line;
216 int last_column;
217 } YYLTYPE;
218 # define yyltype YYLTYPE /* obsolescent; will be withdrawn */
219 # define YYLTYPE_IS_DECLARED 1
220 # define YYLTYPE_IS_TRIVIAL 1
221 #endif])
222
223 m4_ifdef([b4_end_header],
224 [[/* Copy the %end-header blocks. */
225 ]b4_end_header])[]dnl
226
227 [/* Copy the second part of user declarations. */
228 ]b4_user_post_prologue[
229
230 #ifdef short
231 # undef short
232 #endif
233
234 #ifdef YYTYPE_UINT8
235 typedef YYTYPE_UINT8 yytype_uint8;
236 #else
237 typedef unsigned char yytype_uint8;
238 #endif
239
240 #ifdef YYTYPE_INT8
241 typedef YYTYPE_INT8 yytype_int8;
242 #elif ]b4_c_modern[
243 typedef signed char yytype_int8;
244 #else
245 typedef short int yytype_int8;
246 #endif
247
248 #ifdef YYTYPE_UINT16
249 typedef YYTYPE_UINT16 yytype_uint16;
250 #else
251 typedef unsigned short int yytype_uint16;
252 #endif
253
254 #ifdef YYTYPE_INT16
255 typedef YYTYPE_INT16 yytype_int16;
256 #else
257 typedef short int yytype_int16;
258 #endif
259
260 #ifndef YYSIZE_T
261 # ifdef __SIZE_TYPE__
262 # define YYSIZE_T __SIZE_TYPE__
263 # elif defined size_t
264 # define YYSIZE_T size_t
265 # elif ! defined YYSIZE_T && ]b4_c_modern[
266 # include <stddef.h> /* INFRINGES ON USER NAME SPACE */
267 # define YYSIZE_T size_t
268 # else
269 # define YYSIZE_T unsigned int
270 # endif
271 #endif
272
273 #define YYSIZE_MAXIMUM ((YYSIZE_T) -1)
274
275 #ifndef YY_
276 # if YYENABLE_NLS
277 # if ENABLE_NLS
278 # include <libintl.h> /* INFRINGES ON USER NAME SPACE */
279 # define YY_(msgid) dgettext ("bison-runtime", msgid)
280 # endif
281 # endif
282 # ifndef YY_
283 # define YY_(msgid) msgid
284 # endif
285 #endif
286
287 /* Suppress unused-variable warnings by "using" E. */
288 #if ! defined lint || defined __GNUC__
289 # define YYUSE(e) ((void) (e))
290 #else
291 # define YYUSE(e) /* empty */
292 #endif
293
294 /* Identity function, used to suppress warnings about constant conditions. */
295 #ifndef lint
296 # define YYID(n) (n)
297 #else
298 ]b4_c_function_def([YYID], [static int], [[int yyi], [yyi]])[
299 {
300 return yyi;
301 }
302 #endif
303
304 #if ! defined yyoverflow || YYERROR_VERBOSE
305
306 /* The parser invokes alloca or malloc; define the necessary symbols. */
307
308 # ifdef YYSTACK_USE_ALLOCA
309 # if YYSTACK_USE_ALLOCA
310 # ifdef __GNUC__
311 # define YYSTACK_ALLOC __builtin_alloca
312 # elif defined __BUILTIN_VA_ARG_INCR
313 # include <alloca.h> /* INFRINGES ON USER NAME SPACE */
314 # elif defined _AIX
315 # define YYSTACK_ALLOC __alloca
316 # elif defined _MSC_VER
317 # include <malloc.h> /* INFRINGES ON USER NAME SPACE */
318 # define alloca _alloca
319 # else
320 # define YYSTACK_ALLOC alloca
321 # if ! defined _ALLOCA_H && ! defined _STDLIB_H && ]b4_c_modern[
322 # include <stdlib.h> /* INFRINGES ON USER NAME SPACE */
323 # ifndef _STDLIB_H
324 # define _STDLIB_H 1
325 # endif
326 # endif
327 # endif
328 # endif
329 # endif
330
331 # ifdef YYSTACK_ALLOC
332 /* Pacify GCC's `empty if-body' warning. */
333 # define YYSTACK_FREE(Ptr) do { /* empty */; } while (YYID (0))
334 # ifndef YYSTACK_ALLOC_MAXIMUM
335 /* The OS might guarantee only one guard page at the bottom of the stack,
336 and a page size can be as small as 4096 bytes. So we cannot safely
337 invoke alloca (N) if N exceeds 4096. Use a slightly smaller number
338 to allow for a few compiler-allocated temporary stack slots. */
339 # define YYSTACK_ALLOC_MAXIMUM 4032 /* reasonable circa 2006 */
340 # endif
341 # else
342 # define YYSTACK_ALLOC YYMALLOC
343 # define YYSTACK_FREE YYFREE
344 # ifndef YYSTACK_ALLOC_MAXIMUM
345 # define YYSTACK_ALLOC_MAXIMUM YYSIZE_MAXIMUM
346 # endif
347 # if (defined __cplusplus && ! defined _STDLIB_H \
348 && ! ((defined YYMALLOC || defined malloc) \
349 && (defined YYFREE || defined free)))
350 # include <stdlib.h> /* INFRINGES ON USER NAME SPACE */
351 # ifndef _STDLIB_H
352 # define _STDLIB_H 1
353 # endif
354 # endif
355 # ifndef YYMALLOC
356 # define YYMALLOC malloc
357 # if ! defined malloc && ! defined _STDLIB_H && ]b4_c_modern[
358 void *malloc (YYSIZE_T); /* INFRINGES ON USER NAME SPACE */
359 # endif
360 # endif
361 # ifndef YYFREE
362 # define YYFREE free
363 # if ! defined free && ! defined _STDLIB_H && ]b4_c_modern[
364 void free (void *); /* INFRINGES ON USER NAME SPACE */
365 # endif
366 # endif
367 # endif
368 #endif /* ! defined yyoverflow || YYERROR_VERBOSE */
369
370
371 #if (! defined yyoverflow \
372 && (! defined __cplusplus \
373 || (]b4_locations_if([[defined YYLTYPE_IS_TRIVIAL && YYLTYPE_IS_TRIVIAL \
374 && ]])[defined YYSTYPE_IS_TRIVIAL && YYSTYPE_IS_TRIVIAL)))
375
376 /* A type that is properly aligned for any stack member. */
377 union yyalloc
378 {
379 yytype_int16 yyss;
380 YYSTYPE yyvs;
381 ]b4_locations_if([ YYLTYPE yyls;
382 ])dnl
383 [};
384
385 /* The size of the maximum gap between one aligned stack and the next. */
386 # define YYSTACK_GAP_MAXIMUM (sizeof (union yyalloc) - 1)
387
388 /* The size of an array large to enough to hold all stacks, each with
389 N elements. */
390 ]b4_locations_if(
391 [# define YYSTACK_BYTES(N) \
392 ((N) * (sizeof (yytype_int16) + sizeof (YYSTYPE) + sizeof (YYLTYPE)) \
393 + 2 * YYSTACK_GAP_MAXIMUM)],
394 [# define YYSTACK_BYTES(N) \
395 ((N) * (sizeof (yytype_int16) + sizeof (YYSTYPE)) \
396 + YYSTACK_GAP_MAXIMUM)])[
397
398 /* Copy COUNT objects from FROM to TO. The source and destination do
399 not overlap. */
400 # ifndef YYCOPY
401 # if defined __GNUC__ && 1 < __GNUC__
402 # define YYCOPY(To, From, Count) \
403 __builtin_memcpy (To, From, (Count) * sizeof (*(From)))
404 # else
405 # define YYCOPY(To, From, Count) \
406 do \
407 { \
408 YYSIZE_T yyi; \
409 for (yyi = 0; yyi < (Count); yyi++) \
410 (To)[yyi] = (From)[yyi]; \
411 } \
412 while (YYID (0))
413 # endif
414 # endif
415
416 /* Relocate STACK from its old location to the new one. The
417 local variables YYSIZE and YYSTACKSIZE give the old and new number of
418 elements in the stack, and YYPTR gives the new location of the
419 stack. Advance YYPTR to a properly aligned location for the next
420 stack. */
421 # define YYSTACK_RELOCATE(Stack) \
422 do \
423 { \
424 YYSIZE_T yynewbytes; \
425 YYCOPY (&yyptr->Stack, Stack, yysize); \
426 Stack = &yyptr->Stack; \
427 yynewbytes = yystacksize * sizeof (*Stack) + YYSTACK_GAP_MAXIMUM; \
428 yyptr += yynewbytes / sizeof (*yyptr); \
429 } \
430 while (YYID (0))
431
432 #endif
433
434 /* YYFINAL -- State number of the termination state. */
435 #define YYFINAL ]b4_final_state_number[
436 /* YYLAST -- Last index in YYTABLE. */
437 #define YYLAST ]b4_last[
438
439 /* YYNTOKENS -- Number of terminals. */
440 #define YYNTOKENS ]b4_tokens_number[
441 /* YYNNTS -- Number of nonterminals. */
442 #define YYNNTS ]b4_nterms_number[
443 /* YYNRULES -- Number of rules. */
444 #define YYNRULES ]b4_rules_number[
445 /* YYNRULES -- Number of states. */
446 #define YYNSTATES ]b4_states_number[
447
448 /* YYTRANSLATE(YYLEX) -- Bison symbol number corresponding to YYLEX. */
449 #define YYUNDEFTOK ]b4_undef_token_number[
450 #define YYMAXUTOK ]b4_user_token_number_max[
451
452 #define YYTRANSLATE(YYX) \
453 ((unsigned int) (YYX) <= YYMAXUTOK ? yytranslate[YYX] : YYUNDEFTOK)
454
455 /* YYTRANSLATE[YYLEX] -- Bison symbol number corresponding to YYLEX. */
456 static const ]b4_int_type_for([b4_translate])[ yytranslate[] =
457 {
458 ]b4_translate[
459 };
460
461 #if YYDEBUG
462 /* YYPRHS[YYN] -- Index of the first RHS symbol of rule number YYN in
463 YYRHS. */
464 static const ]b4_int_type_for([b4_prhs])[ yyprhs[] =
465 {
466 ]b4_prhs[
467 };
468
469 /* YYRHS -- A `-1'-separated list of the rules' RHS. */
470 static const ]b4_int_type_for([b4_rhs])[ yyrhs[] =
471 {
472 ]b4_rhs[
473 };
474
475 /* YYRLINE[YYN] -- source line where rule number YYN was defined. */
476 static const ]b4_int_type_for([b4_rline])[ yyrline[] =
477 {
478 ]b4_rline[
479 };
480 #endif
481
482 #if YYDEBUG || YYERROR_VERBOSE || YYTOKEN_TABLE
483 /* YYTNAME[SYMBOL-NUM] -- String name of the symbol SYMBOL-NUM.
484 First, the terminals, then, starting at YYNTOKENS, nonterminals. */
485 static const char *const yytname[] =
486 {
487 ]b4_tname[
488 };
489 #endif
490
491 # ifdef YYPRINT
492 /* YYTOKNUM[YYLEX-NUM] -- Internal token number corresponding to
493 token YYLEX-NUM. */
494 static const ]b4_int_type_for([b4_toknum])[ yytoknum[] =
495 {
496 ]b4_toknum[
497 };
498 # endif
499
500 /* YYR1[YYN] -- Symbol number of symbol that rule YYN derives. */
501 static const ]b4_int_type_for([b4_r1])[ yyr1[] =
502 {
503 ]b4_r1[
504 };
505
506 /* YYR2[YYN] -- Number of symbols composing right hand side of rule YYN. */
507 static const ]b4_int_type_for([b4_r2])[ yyr2[] =
508 {
509 ]b4_r2[
510 };
511
512 /* YYDEFACT[STATE-NAME] -- Default rule to reduce with in state
513 STATE-NUM when YYTABLE doesn't specify something else to do. Zero
514 means the default is an error. */
515 static const ]b4_int_type_for([b4_defact])[ yydefact[] =
516 {
517 ]b4_defact[
518 };
519
520 /* YYDEFGOTO[NTERM-NUM]. */
521 static const ]b4_int_type_for([b4_defgoto])[ yydefgoto[] =
522 {
523 ]b4_defgoto[
524 };
525
526 /* YYPACT[STATE-NUM] -- Index in YYTABLE of the portion describing
527 STATE-NUM. */
528 #define YYPACT_NINF ]b4_pact_ninf[
529 static const ]b4_int_type_for([b4_pact])[ yypact[] =
530 {
531 ]b4_pact[
532 };
533
534 /* YYPGOTO[NTERM-NUM]. */
535 static const ]b4_int_type_for([b4_pgoto])[ yypgoto[] =
536 {
537 ]b4_pgoto[
538 };
539
540 /* YYTABLE[YYPACT[STATE-NUM]]. What to do in state STATE-NUM. If
541 positive, shift that token. If negative, reduce the rule which
542 number is the opposite. If zero, do what YYDEFACT says.
543 If YYTABLE_NINF, syntax error. */
544 #define YYTABLE_NINF ]b4_table_ninf[
545 static const ]b4_int_type_for([b4_table])[ yytable[] =
546 {
547 ]b4_table[
548 };
549
550 static const ]b4_int_type_for([b4_check])[ yycheck[] =
551 {
552 ]b4_check[
553 };
554
555 /* YYSTOS[STATE-NUM] -- The (internal number of the) accessing
556 symbol of state STATE-NUM. */
557 static const ]b4_int_type_for([b4_stos])[ yystos[] =
558 {
559 ]b4_stos[
560 };
561
562 #define yyerrok (yyerrstatus = 0)
563 #define yyclearin (yychar = YYEMPTY)
564 #define YYEMPTY (-2)
565 #define YYEOF 0
566
567 #define YYACCEPT goto yyacceptlab
568 #define YYABORT goto yyabortlab
569 #define YYERROR goto yyerrorlab
570
571
572 /* Like YYERROR except do call yyerror. This remains here temporarily
573 to ease the transition to the new meaning of YYERROR, for GCC.
574 Once GCC version 2 has supplanted version 1, this can go. */
575
576 #define YYFAIL goto yyerrlab
577
578 #define YYRECOVERING() (!!yyerrstatus)
579
580 #define YYBACKUP(Token, Value) \
581 do \
582 if (yychar == YYEMPTY && yylen == 1) \
583 { \
584 yychar = (Token); \
585 yylval = (Value); \
586 yytoken = YYTRANSLATE (yychar); \
587 YYPOPSTACK (1); \
588 goto yybackup; \
589 } \
590 else \
591 { \
592 yyerror (]b4_yyerror_args[YY_("syntax error: cannot back up")); \
593 YYERROR; \
594 } \
595 while (YYID (0))
596
597
598 #define YYTERROR 1
599 #define YYERRCODE 256
600
601
602 /* YYLLOC_DEFAULT -- Set CURRENT to span from RHS[1] to RHS[N].
603 If N is 0, then set CURRENT to the empty location which ends
604 the previous symbol: RHS[0] (always defined). */
605
606 #define YYRHSLOC(Rhs, K) ((Rhs)[K])
607 #ifndef YYLLOC_DEFAULT
608 # define YYLLOC_DEFAULT(Current, Rhs, N) \
609 do \
610 if (YYID (N)) \
611 { \
612 (Current).first_line = YYRHSLOC (Rhs, 1).first_line; \
613 (Current).first_column = YYRHSLOC (Rhs, 1).first_column; \
614 (Current).last_line = YYRHSLOC (Rhs, N).last_line; \
615 (Current).last_column = YYRHSLOC (Rhs, N).last_column; \
616 } \
617 else \
618 { \
619 (Current).first_line = (Current).last_line = \
620 YYRHSLOC (Rhs, 0).last_line; \
621 (Current).first_column = (Current).last_column = \
622 YYRHSLOC (Rhs, 0).last_column; \
623 } \
624 while (YYID (0))
625 #endif
626
627
628 /* YY_LOCATION_PRINT -- Print the location on the stream.
629 This macro was not mandated originally: define only if we know
630 we won't break user code: when these are the locations we know. */
631
632 #ifndef YY_LOCATION_PRINT
633 # if YYLTYPE_IS_TRIVIAL
634 # define YY_LOCATION_PRINT(File, Loc) \
635 fprintf (File, "%d.%d-%d.%d", \
636 (Loc).first_line, (Loc).first_column, \
637 (Loc).last_line, (Loc).last_column)
638 # else
639 # define YY_LOCATION_PRINT(File, Loc) ((void) 0)
640 # endif
641 #endif
642
643
644 /* YYLEX -- calling `yylex' with the right arguments. */
645
646 #ifdef YYLEX_PARAM
647 # define YYLEX yylex (]b4_pure_if([&yylval[]b4_locations_if([, &yylloc]), ])[YYLEX_PARAM)
648 #else
649 # define YYLEX ]b4_c_function_call([yylex], [int], b4_lex_param)[
650 #endif
651
652 /* Enable debugging if requested. */
653 #if YYDEBUG
654
655 # ifndef YYFPRINTF
656 # include <stdio.h> /* INFRINGES ON USER NAME SPACE */
657 # define YYFPRINTF fprintf
658 # endif
659
660 # define YYDPRINTF(Args) \
661 do { \
662 if (yydebug) \
663 YYFPRINTF Args; \
664 } while (YYID (0))
665
666 # define YY_SYMBOL_PRINT(Title, Type, Value, Location) \
667 do { \
668 if (yydebug) \
669 { \
670 YYFPRINTF (stderr, "%s ", Title); \
671 yy_symbol_print (stderr, \
672 Type, Value]b4_locations_if([, Location])[]b4_user_args[); \
673 YYFPRINTF (stderr, "\n"); \
674 } \
675 } while (YYID (0))
676
677 ]b4_yy_symbol_print_generate([b4_c_function_def])[
678
679 /*------------------------------------------------------------------.
680 | yy_stack_print -- Print the state stack from its BOTTOM up to its |
681 | TOP (included). |
682 `------------------------------------------------------------------*/
683
684 ]b4_c_function_def([yy_stack_print], [static void],
685 [[yytype_int16 *yybottom], [yybottom]],
686 [[yytype_int16 *yytop], [yytop]])[
687 {
688 YYFPRINTF (stderr, "Stack now");
689 for (; yybottom <= yytop; yybottom++)
690 {
691 int yybot = *yybottom;
692 YYFPRINTF (stderr, " %d", yybot);
693 }
694 YYFPRINTF (stderr, "\n");
695 }
696
697 # define YY_STACK_PRINT(Bottom, Top) \
698 do { \
699 if (yydebug) \
700 yy_stack_print ((Bottom), (Top)); \
701 } while (YYID (0))
702
703
704 /*------------------------------------------------.
705 | Report that the YYRULE is going to be reduced. |
706 `------------------------------------------------*/
707
708 ]b4_c_function_def([yy_reduce_print], [static void],
709 [[YYSTYPE *yyvsp], [yyvsp]],
710 b4_locations_if([[[YYLTYPE *yylsp], [yylsp]],
711 ])[[int yyrule], [yyrule]]m4_ifset([b4_parse_param], [,
712 ])b4_parse_param)[
713 {
714 int yynrhs = yyr2[yyrule];
715 int yyi;
716 unsigned long int yylno = yyrline[yyrule];
717 YYFPRINTF (stderr, "Reducing stack by rule %d (line %lu):\n",
718 yyrule - 1, yylno);
719 /* The symbols being reduced. */
720 for (yyi = 0; yyi < yynrhs; yyi++)
721 {
722 fprintf (stderr, " $%d = ", yyi + 1);
723 yy_symbol_print (stderr, yyrhs[yyprhs[yyrule] + yyi],
724 &]b4_rhs_value(yynrhs, yyi + 1)[
725 ]b4_locations_if([, &]b4_rhs_location(yynrhs, yyi + 1))[]dnl
726 b4_user_args[);
727 fprintf (stderr, "\n");
728 }
729 }
730
731 # define YY_REDUCE_PRINT(Rule) \
732 do { \
733 if (yydebug) \
734 yy_reduce_print (yyvsp, ]b4_locations_if([yylsp, ])[Rule]b4_user_args[); \
735 } while (YYID (0))
736
737 /* Nonzero means print parse trace. It is left uninitialized so that
738 multiple parsers can coexist. */
739 int yydebug;
740 #else /* !YYDEBUG */
741 # define YYDPRINTF(Args)
742 # define YY_SYMBOL_PRINT(Title, Type, Value, Location)
743 # define YY_STACK_PRINT(Bottom, Top)
744 # define YY_REDUCE_PRINT(Rule)
745 #endif /* !YYDEBUG */
746
747
748 /* YYINITDEPTH -- initial size of the parser's stacks. */
749 #ifndef YYINITDEPTH
750 # define YYINITDEPTH ]b4_stack_depth_init[
751 #endif
752
753 /* YYMAXDEPTH -- maximum size the stacks can grow to (effective only
754 if the built-in stack extension method is used).
755
756 Do not make this value too large; the results are undefined if
757 YYSTACK_ALLOC_MAXIMUM < YYSTACK_BYTES (YYMAXDEPTH)
758 evaluated with infinite-precision integer arithmetic. */
759
760 #ifndef YYMAXDEPTH
761 # define YYMAXDEPTH ]b4_stack_depth_max[
762 #endif
763
764 \f
765
766 #if YYERROR_VERBOSE
767
768 # ifndef yystrlen
769 # if defined __GLIBC__ && defined _STRING_H
770 # define yystrlen strlen
771 # else
772 /* Return the length of YYSTR. */
773 ]b4_c_function_def([yystrlen], [static YYSIZE_T],
774 [[const char *yystr], [yystr]])[
775 {
776 YYSIZE_T yylen;
777 for (yylen = 0; yystr[yylen]; yylen++)
778 continue;
779 return yylen;
780 }
781 # endif
782 # endif
783
784 # ifndef yystpcpy
785 # if defined __GLIBC__ && defined _STRING_H && defined _GNU_SOURCE
786 # define yystpcpy stpcpy
787 # else
788 /* Copy YYSRC to YYDEST, returning the address of the terminating '\0' in
789 YYDEST. */
790 ]b4_c_function_def([yystpcpy], [static char *],
791 [[char *yydest], [yydest]], [[const char *yysrc], [yysrc]])[
792 {
793 char *yyd = yydest;
794 const char *yys = yysrc;
795
796 while ((*yyd++ = *yys++) != '\0')
797 continue;
798
799 return yyd - 1;
800 }
801 # endif
802 # endif
803
804 # ifndef yytnamerr
805 /* Copy to YYRES the contents of YYSTR after stripping away unnecessary
806 quotes and backslashes, so that it's suitable for yyerror. The
807 heuristic is that double-quoting is unnecessary unless the string
808 contains an apostrophe, a comma, or backslash (other than
809 backslash-backslash). YYSTR is taken from yytname. If YYRES is
810 null, do not copy; instead, return the length of what the result
811 would have been. */
812 static YYSIZE_T
813 yytnamerr (char *yyres, const char *yystr)
814 {
815 if (*yystr == '"')
816 {
817 YYSIZE_T yyn = 0;
818 char const *yyp = yystr;
819
820 for (;;)
821 switch (*++yyp)
822 {
823 case '\'':
824 case ',':
825 goto do_not_strip_quotes;
826
827 case '\\':
828 if (*++yyp != '\\')
829 goto do_not_strip_quotes;
830 /* Fall through. */
831 default:
832 if (yyres)
833 yyres[yyn] = *yyp;
834 yyn++;
835 break;
836
837 case '"':
838 if (yyres)
839 yyres[yyn] = '\0';
840 return yyn;
841 }
842 do_not_strip_quotes: ;
843 }
844
845 if (! yyres)
846 return yystrlen (yystr);
847
848 return yystpcpy (yyres, yystr) - yyres;
849 }
850 # endif
851
852 /* Copy into YYRESULT an error message about the unexpected token
853 YYCHAR while in state YYSTATE. Return the number of bytes copied,
854 including the terminating null byte. If YYRESULT is null, do not
855 copy anything; just return the number of bytes that would be
856 copied. As a special case, return 0 if an ordinary "syntax error"
857 message will do. Return YYSIZE_MAXIMUM if overflow occurs during
858 size calculation. */
859 static YYSIZE_T
860 yysyntax_error (char *yyresult, int yystate, int yychar)
861 {
862 int yyn = yypact[yystate];
863
864 if (! (YYPACT_NINF < yyn && yyn <= YYLAST))
865 return 0;
866 else
867 {
868 int yytype = YYTRANSLATE (yychar);
869 YYSIZE_T yysize0 = yytnamerr (0, yytname[yytype]);
870 YYSIZE_T yysize = yysize0;
871 YYSIZE_T yysize1;
872 int yysize_overflow = 0;
873 enum { YYERROR_VERBOSE_ARGS_MAXIMUM = 5 };
874 char const *yyarg[YYERROR_VERBOSE_ARGS_MAXIMUM];
875 int yyx;
876
877 # if 0
878 /* This is so xgettext sees the translatable formats that are
879 constructed on the fly. */
880 YY_("syntax error, unexpected %s");
881 YY_("syntax error, unexpected %s, expecting %s");
882 YY_("syntax error, unexpected %s, expecting %s or %s");
883 YY_("syntax error, unexpected %s, expecting %s or %s or %s");
884 YY_("syntax error, unexpected %s, expecting %s or %s or %s or %s");
885 # endif
886 char *yyfmt;
887 char const *yyf;
888 static char const yyunexpected[] = "syntax error, unexpected %s";
889 static char const yyexpecting[] = ", expecting %s";
890 static char const yyor[] = " or %s";
891 char yyformat[sizeof yyunexpected
892 + sizeof yyexpecting - 1
893 + ((YYERROR_VERBOSE_ARGS_MAXIMUM - 2)
894 * (sizeof yyor - 1))];
895 char const *yyprefix = yyexpecting;
896
897 /* Start YYX at -YYN if negative to avoid negative indexes in
898 YYCHECK. */
899 int yyxbegin = yyn < 0 ? -yyn : 0;
900
901 /* Stay within bounds of both yycheck and yytname. */
902 int yychecklim = YYLAST - yyn + 1;
903 int yyxend = yychecklim < YYNTOKENS ? yychecklim : YYNTOKENS;
904 int yycount = 1;
905
906 yyarg[0] = yytname[yytype];
907 yyfmt = yystpcpy (yyformat, yyunexpected);
908
909 for (yyx = yyxbegin; yyx < yyxend; ++yyx)
910 if (yycheck[yyx + yyn] == yyx && yyx != YYTERROR)
911 {
912 if (yycount == YYERROR_VERBOSE_ARGS_MAXIMUM)
913 {
914 yycount = 1;
915 yysize = yysize0;
916 yyformat[sizeof yyunexpected - 1] = '\0';
917 break;
918 }
919 yyarg[yycount++] = yytname[yyx];
920 yysize1 = yysize + yytnamerr (0, yytname[yyx]);
921 yysize_overflow |= (yysize1 < yysize);
922 yysize = yysize1;
923 yyfmt = yystpcpy (yyfmt, yyprefix);
924 yyprefix = yyor;
925 }
926
927 yyf = YY_(yyformat);
928 yysize1 = yysize + yystrlen (yyf);
929 yysize_overflow |= (yysize1 < yysize);
930 yysize = yysize1;
931
932 if (yysize_overflow)
933 return YYSIZE_MAXIMUM;
934
935 if (yyresult)
936 {
937 /* Avoid sprintf, as that infringes on the user's name space.
938 Don't have undefined behavior even if the translation
939 produced a string with the wrong number of "%s"s. */
940 char *yyp = yyresult;
941 int yyi = 0;
942 while ((*yyp = *yyf) != '\0')
943 {
944 if (*yyp == '%' && yyf[1] == 's' && yyi < yycount)
945 {
946 yyp += yytnamerr (yyp, yyarg[yyi++]);
947 yyf += 2;
948 }
949 else
950 {
951 yyp++;
952 yyf++;
953 }
954 }
955 }
956 return yysize;
957 }
958 }
959 #endif /* YYERROR_VERBOSE */
960 \f
961
962 ]b4_yydestruct_generate([b4_c_function_def])[
963 \f
964
965 /* Prevent warnings from -Wmissing-prototypes. */
966
967 #ifdef YYPARSE_PARAM
968 ]b4_c_function_decl([yyparse], [int],
969 [[void *YYPARSE_PARAM], [YYPARSE_PARAM]])[
970 #else /* ! YYPARSE_PARAM */
971 ]b4_c_function_decl([yyparse], [int], b4_parse_param)[
972 #endif /* ! YYPARSE_PARAM */
973
974 ]b4_push_if([
975 struct yypvars;
976 ]b4_c_function_decl([yyresult_get], [int], [[struct yypvars *YYPVARS], [YYPVARS]])[
977 ]b4_c_function_decl([yychar_set], [void], [[struct yypvars *YYPVARS], [YYPVARS]], [[int yychar], [yychar]])[
978 ]b4_c_function_decl([yylval_set], [void], [[struct yypvars *YYPVARS], [YYPVARS]], [[YYSTYPE yylval], [yylval]])[
979 #ifdef YYLTYPE_IS_TRIVIAL
980 ]b4_c_function_decl([yylloc_set], [void], [[struct yypvars *YYPVARS], [YYPVARS]], [[YYLTYPE yylloc], [yylloc]])[
981 #endif
982 ]b4_c_function_decl([yypvarsinit], [void *], [[void], []])[
983 ]b4_c_function_decl([yypushparse], [void],
984 [[struct yypvars *YYPVARS], [YYPVARS]])[
985 ])[
986
987 ]m4_divert_push([KILL])# ======================== M4 code.
988 # b4_declare_parser_variables
989 # ---------------------------
990 # Declare the variables that are global, or local to YYPARSE if
991 # pure-parser.
992 m4_define([b4_declare_parser_variables],
993 [/* The lookahead symbol. */
994 int yychar;
995
996 /* The semantic value of the lookahead symbol. */
997 YYSTYPE yylval;
998
999 /* Number of syntax errors so far. */
1000 int yynerrs;b4_locations_if([
1001 /* Location data for the lookahead symbol. */
1002 YYLTYPE yylloc;])
1003 ])
1004
1005 # b4_declare_yyparse_variables
1006 # ----------------------------
1007 # Declare all the variables that are needed local to YYPARSE
1008 m4_define([b4_declare_yyparse_variables],
1009 [[struct yypvars
1010 {
1011 ]]b4_declare_parser_variables[[
1012 int yystate;
1013 int yyn;
1014 int yyresult;
1015 /* Number of tokens to shift before error messages enabled. */
1016 int yyerrstatus;
1017 /* Look-ahead token as an internal (translated) token number. */
1018 int yytoken;
1019
1020 #if YYERROR_VERBOSE
1021 /* Buffer for error messages, and its allocated size. */
1022 char yymsgbuf[128];
1023 char *yymsgbuf_ptr;
1024 char *yymsg;
1025 YYSIZE_T yymsg_alloc;
1026 #endif
1027
1028 /* Three stacks and their tools:
1029 `yyss': related to states,
1030 `yyvs': related to semantic values,
1031 `yyls': related to locations.
1032
1033 Refer to the stacks thru separate pointers, to allow yyoverflow
1034 to reallocate them elsewhere. */
1035
1036 /* The state stack. */
1037 yytype_int16 yyssa[YYINITDEPTH];
1038 yytype_int16 *yyssa_ptr;
1039 yytype_int16 *yyss;
1040 yytype_int16 *yyssp;
1041
1042 /* The semantic value stack. */
1043 YYSTYPE yyvsa[YYINITDEPTH];
1044 YYSTYPE *yyvs;
1045 YYSTYPE *yyvsp;]]b4_locations_if([[[
1046 /* The location stack. */
1047 YYLTYPE yylsa[YYINITDEPTH];
1048 YYLTYPE *yyls;
1049 YYLTYPE *yylsp;
1050 /* The locations where the error started and ended. */
1051 YYLTYPE yyerror_range[2];
1052 YYLTYPE *yyerror_range_ptr;]]])[
1053 YYSIZE_T yystacksize;
1054 int yylen;
1055 /* The variables used to return semantic value and location from the
1056 action routines. */
1057 YYSTYPE yyval;
1058 /* Used to determine if this is the first time this instance has
1059 been used. */
1060 int yynew;]b4_locations_if([YYLTYPE yyloc;])[
1061 };
1062
1063 /* Init the parser data structure. Use malloc, should perhaps use a
1064 system dependent equivalent function. */
1065 void*
1066 yypvarsinit (void)
1067 {
1068 struct yypvars *pv;
1069 pv= (struct yypvars *) malloc(sizeof(struct yypvars));
1070 pv->yystate = 0;
1071 pv->yyresult = -1;
1072 pv->yyerrstatus = 0;
1073 pv->yytoken = 0;
1074
1075 #if YYERROR_VERBOSE
1076 pv->yymsgbuf_ptr = pv->yymsgbuf;
1077 pv->yymsg = pv->yymsgbuf;
1078 pv->yymsg_alloc = sizeof pv->yymsgbuf;
1079 #endif
1080
1081 pv->yyssa_ptr = pv->yyssa;
1082 pv->yyss = pv->yyssa;
1083 pv->yyvs = pv->yyvsa;
1084
1085 ]b4_locations_if([
1086 pv->yyls = pv->yylsa;])[
1087 pv->yystacksize = YYINITDEPTH;
1088
1089 pv->yyssp = pv->yyss;
1090 pv->yyvsp = pv->yyvs;
1091
1092 #if YYLTYPE_IS_TRIVIAL
1093 /* Initialize the default location before parsing starts. */
1094 pv->yylloc.first_line = pv->yylloc.last_line = ]b4_location_initial_line[;
1095 pv->yylloc.first_column = pv->yylloc.last_column = ]b4_location_initial_column[;
1096 #endif
1097
1098 pv->yynew = 1;
1099
1100 ]b4_locations_if([ pv->yylsp = pv->yyls;])[
1101 /* Init parser variables */
1102
1103 return (void*) pv;
1104 }
1105
1106 int
1107 yyresult_get (struct yypvars *YYPVARS)
1108 {
1109 return YYPVARS->yyresult;
1110 }
1111
1112 void
1113 yychar_set (struct yypvars *YYPVARS, int yychar)
1114 {
1115 if (YYPVARS)
1116 YYPVARS->yychar = yychar;
1117 }
1118
1119 void
1120 yylval_set (struct yypvars *YYPVARS, YYSTYPE yylval)
1121 {
1122 if (YYPVARS)
1123 YYPVARS->yylval = yylval;
1124 }
1125
1126 #ifdef YYLTYPE_IS_TRIVIAL
1127 void
1128 yylloc_set (struct yypvars *YYPVARS, YYLTYPE yylloc)
1129 {
1130 if (YYPVARS)
1131 YYPVARS->yylloc = yylloc;
1132 }
1133 #endif])
1134 m4_divert_pop([KILL])dnl# ====================== End of M4 code.
1135
1136 b4_pure_if([],
1137 [b4_declare_parser_variables])
1138
1139 b4_push_if([b4_declare_yyparse_variables])
1140
1141 /*-------------------------.
1142 | yyparse or yypushparse. |
1143 `-------------------------*/
1144
1145 b4_push_if([
1146 b4_c_function_def([yypushparse], [void], [[struct yypvars *YYPVARS], [YYPVARS]])],[
1147 #ifdef YYPARSE_PARAM
1148 b4_c_function_def([yyparse], [int], [[void *YYPARSE_PARAM], [YYPARSE_PARAM]])
1149 #else /* ! YYPARSE_PARAM */
1150 b4_c_function_def([yyparse], [int], b4_parse_param)
1151 #endif])
1152 {[
1153 ]b4_pure_if([b4_declare_parser_variables])[
1154 ]b4_push_if([struct yypvars *pv;])[
1155 int yystate;
1156 int yyn;
1157 int yyresult;
1158 /* Number of tokens to shift before error messages enabled. */
1159 int yyerrstatus;
1160 /* Lookahead token as an internal (translated) token number. */
1161 int yytoken = 0;
1162 #if YYERROR_VERBOSE
1163 /* Buffer for error messages, and its allocated size. */
1164 char yymsgbuf[128];
1165 char *yymsgbuf_ptr = yymsgbuf;
1166 char *yymsg = yymsgbuf;
1167 YYSIZE_T yymsg_alloc = sizeof yymsgbuf;
1168 #endif
1169
1170 /* Three stacks and their tools:
1171 `yyss': related to states,
1172 `yyvs': related to semantic values,
1173 `yyls': related to locations.
1174
1175 Refer to the stacks thru separate pointers, to allow yyoverflow
1176 to reallocate them elsewhere. */
1177
1178 /* The state stack. */
1179 yytype_int16 yyssa[YYINITDEPTH];
1180 yytype_int16 *yyssa_ptr = yyssa;
1181 yytype_int16 *yyss = yyssa;
1182 yytype_int16 *yyssp;
1183
1184 /* The semantic value stack. */
1185 YYSTYPE yyvsa[YYINITDEPTH];
1186 YYSTYPE *yyvs = yyvsa;
1187 YYSTYPE *yyvsp;
1188
1189 ]b4_locations_if(
1190 [[ /* The location stack. */
1191 YYLTYPE yylsa[YYINITDEPTH];
1192 YYLTYPE *yyls = yylsa;
1193 YYLTYPE *yylsp;
1194 /* The locations where the error started and ended. */
1195 YYLTYPE yyerror_range[2];
1196 YYLTYPE *yyerror_range_ptr = yyerror_range;
1197 ]])[
1198
1199 #define YYPOPSTACK(N) (yyvsp -= (N), yyssp -= (N)]b4_locations_if([, yylsp -= (N)])[)
1200
1201 YYSIZE_T yystacksize = YYINITDEPTH;
1202
1203 /* The variables used to return semantic value and location from the
1204 action routines. */
1205 YYSTYPE yyval;
1206 ]b4_locations_if([ YYLTYPE yyloc;])[
1207
1208 /* The number of symbols on the RHS of the reduced rule.
1209 Keep to zero when no symbol should be popped. */
1210 int yylen = 0;
1211
1212 YYDPRINTF ((stderr, "Starting parse\n"));
1213
1214 ]b4_push_if([pv = YYPVARS;])[
1215
1216 yystate = 0;
1217 yyerrstatus = 0;
1218 yynerrs = 0;
1219 yychar = YYEMPTY; /* Cause a token to be read. */
1220
1221 /* Initialize stack pointers.
1222 Waste one element of value and location stack
1223 so that they stay on the same level as the state stack.
1224 The wasted elements are never initialized. */
1225
1226 yyssp = yyss;
1227 yyvsp = yyvs;
1228 ]b4_locations_if([[ yylsp = yyls;
1229 ]b4_push_if([],[
1230 #if YYLTYPE_IS_TRIVIAL
1231 /* Initialize the default location before parsing starts. */
1232 yylloc.first_line = yylloc.last_line = ]b4_location_initial_line[;
1233 yylloc.first_column = yylloc.last_column = ]b4_location_initial_column[;
1234 #endif])[
1235 ]])
1236 m4_ifdef([b4_initial_action], [
1237 m4_pushdef([b4_at_dollar], [m4_define([b4_at_dollar_used])yylloc])dnl
1238 m4_pushdef([b4_dollar_dollar], [m4_define([b4_dollar_dollar_used])yylval])dnl
1239 /* User initialization code. */
1240 b4_user_initial_action
1241 m4_popdef([b4_dollar_dollar])dnl
1242 m4_popdef([b4_at_dollar])])dnl
1243 m4_ifdef([b4_dollar_dollar_used],[[ yyvsp[0] = yylval;
1244 ]])dnl
1245 m4_ifdef([b4_at_dollar_used], [[ yylsp[0] = yylloc;
1246 ]])dnl
1247 [ ]b4_push_if([
1248 /* Initialize the locals to the current context. */
1249 yychar = pv->yychar;
1250 yylval = pv->yylval;
1251 yynerrs = pv->yynerrs;
1252 ]b4_locations_if([
1253 yylloc = pv->yylloc;])[
1254
1255 yystate = pv->yystate;
1256 yyn = pv->yyn;
1257 yyresult = pv->yyresult;
1258 yyerrstatus = pv->yyerrstatus;
1259 yytoken = pv->yytoken;
1260 #if YYERROR_VERBOSE
1261 yymsgbuf_ptr = pv->yymsgbuf_ptr;
1262 yymsg = pv->yymsg;;
1263 yymsg_alloc = pv->yymsg_alloc;
1264 #endif
1265 yyssa_ptr = pv->yyssa_ptr;
1266 yyss = pv->yyss;
1267 yyssp = pv->yyssp;
1268
1269 yyvs = pv->yyvs;
1270 yyvsp = pv->yyvsp;
1271
1272 ]b4_locations_if([[ /* The location stack. */
1273 yyls = pv->yyls;
1274 yylsp = pv->yylsp;
1275
1276 yyerror_range_ptr = pv->yyerror_range_ptr;]])[
1277
1278 yystacksize = pv->yystacksize;
1279 yylen = pv->yylen;
1280 yyval = pv->yyval;
1281 ]b4_locations_if([yyloc = pv->yyloc;])[
1282 if (pv->yynew == 0)
1283 {
1284 goto gottoken;
1285 }
1286 pv->yynew= 0;])[
1287 goto yysetstate;
1288
1289 /*------------------------------------------------------------.
1290 | yynewstate -- Push a new state, which is found in yystate. |
1291 `------------------------------------------------------------*/
1292 yynewstate:
1293 /* In all cases, when you get here, the value and location stacks
1294 have just been pushed. So pushing a state here evens the stacks. */
1295 yyssp++;
1296
1297 yysetstate:
1298 *yyssp = yystate;
1299
1300 if (yyss + yystacksize - 1 <= yyssp)
1301 {
1302 /* Get the current used size of the three stacks, in elements. */
1303 YYSIZE_T yysize = yyssp - yyss + 1;
1304
1305 #ifdef yyoverflow
1306 {
1307 /* Give user a chance to reallocate the stack. Use copies of
1308 these so that the &'s don't force the real ones into
1309 memory. */
1310 YYSTYPE *yyvs1 = yyvs;
1311 yytype_int16 *yyss1 = yyss;
1312 ]b4_locations_if([ YYLTYPE *yyls1 = yyls;])[
1313
1314 /* Each stack pointer address is followed by the size of the
1315 data in use in that stack, in bytes. This used to be a
1316 conditional around just the two extra args, but that might
1317 be undefined if yyoverflow is a macro. */
1318 yyoverflow (YY_("memory exhausted"),
1319 &yyss1, yysize * sizeof (*yyssp),
1320 &yyvs1, yysize * sizeof (*yyvsp),
1321 ]b4_locations_if([ &yyls1, yysize * sizeof (*yylsp),])[
1322 &yystacksize);
1323 ]b4_locations_if([ yyls = yyls1;])[
1324 yyss = yyss1;
1325 yyvs = yyvs1;
1326 }
1327 #else /* no yyoverflow */
1328 # ifndef YYSTACK_RELOCATE
1329 goto yyexhaustedlab;
1330 # else
1331 /* Extend the stack our own way. */
1332 if (YYMAXDEPTH <= yystacksize)
1333 goto yyexhaustedlab;
1334 yystacksize *= 2;
1335 if (YYMAXDEPTH < yystacksize)
1336 yystacksize = YYMAXDEPTH;
1337
1338 {
1339 yytype_int16 *yyss1 = yyss;
1340 union yyalloc *yyptr =
1341 (union yyalloc *) YYSTACK_ALLOC (YYSTACK_BYTES (yystacksize));
1342 if (! yyptr)
1343 goto yyexhaustedlab;
1344 YYSTACK_RELOCATE (yyss);
1345 YYSTACK_RELOCATE (yyvs);
1346 ]b4_locations_if([ YYSTACK_RELOCATE (yyls);])[
1347 # undef YYSTACK_RELOCATE
1348 if (yyss1 != yyssa_ptr)
1349 YYSTACK_FREE (yyss1);
1350 }
1351 # endif
1352 #endif /* no yyoverflow */
1353
1354 yyssp = yyss + yysize - 1;
1355 yyvsp = yyvs + yysize - 1;
1356 ]b4_locations_if([ yylsp = yyls + yysize - 1;])[
1357
1358 YYDPRINTF ((stderr, "Stack size increased to %lu\n",
1359 (unsigned long int) yystacksize));
1360
1361 if (yyss + yystacksize - 1 <= yyssp)
1362 YYABORT;
1363 }
1364
1365 YYDPRINTF ((stderr, "Entering state %d\n", yystate));
1366
1367 if (yystate == YYFINAL)
1368 YYACCEPT;
1369
1370 goto yybackup;
1371
1372 /*-----------.
1373 | yybackup. |
1374 `-----------*/
1375 yybackup:
1376
1377 /* Do appropriate processing given the current state. Read a
1378 lookahead token if we need one and don't already have one. */
1379
1380 /* First try to decide what to do without reference to lookahead token. */
1381 yyn = yypact[yystate];
1382 if (yyn == YYPACT_NINF)
1383 goto yydefault;
1384
1385 /* Not known => get a lookahead token if don't already have one. */
1386
1387 /* YYCHAR is either YYEMPTY or YYEOF or a valid lookahead symbol. */
1388 if (yychar == YYEMPTY)
1389 {
1390 ]b4_push_if([
1391 YYDPRINTF ((stderr, "Return for a new token:\n"));
1392 yyresult= 4;
1393 /* Initialize the locals to the current context. */
1394 pv->yychar = yychar;
1395 pv->yylval = yylval;
1396 pv->yynerrs = yynerrs;
1397 ]b4_locations_if([
1398 pv->yylloc = yylloc;])[
1399
1400 pv->yystate = yystate;
1401 pv->yyn = yyn;
1402 pv->yyresult = yyresult;
1403 pv->yyerrstatus = yyerrstatus;
1404 pv->yytoken = yytoken;
1405 #if YYERROR_VERBOSE
1406 pv->yymsgbuf_ptr = yymsgbuf_ptr;
1407 pv->yymsg = yymsg;;
1408 pv->yymsg_alloc = yymsg_alloc;
1409 #endif
1410 pv->yyssa_ptr = yyssa_ptr;
1411 pv->yyss = yyss;
1412 pv->yyssp = yyssp;
1413
1414 pv->yyvs = yyvs;
1415 pv->yyvsp = yyvsp;
1416
1417 ]b4_locations_if([[ /* The location stack. */
1418 pv->yyls = yyls;
1419 pv->yylsp = yylsp;
1420 pv->yyerror_range_ptr = yyerror_range_ptr;]])[
1421
1422 pv->yystacksize = yystacksize;
1423 pv->yylen = yylen;
1424 pv->yyval = yyval;
1425 ]b4_locations_if([pv->yyloc = yyloc;])[
1426 return;
1427 gottoken:
1428 YYDPRINTF((stderr, "Reading a token: "));],[
1429 YYDPRINTF ((stderr, "Reading a token: "));
1430 yychar = YYLEX;])[
1431 }
1432
1433 if (yychar <= YYEOF)
1434 {
1435 yychar = yytoken = YYEOF;
1436 YYDPRINTF ((stderr, "Now at end of input.\n"));
1437 }
1438 else
1439 {
1440 yytoken = YYTRANSLATE (yychar);
1441 YY_SYMBOL_PRINT ("Next token is", yytoken, &yylval, &yylloc);
1442 }
1443
1444 /* If the proper action on seeing token YYTOKEN is to reduce or to
1445 detect an error, take that action. */
1446 yyn += yytoken;
1447 if (yyn < 0 || YYLAST < yyn || yycheck[yyn] != yytoken)
1448 goto yydefault;
1449 yyn = yytable[yyn];
1450 if (yyn <= 0)
1451 {
1452 if (yyn == 0 || yyn == YYTABLE_NINF)
1453 goto yyerrlab;
1454 yyn = -yyn;
1455 goto yyreduce;
1456 }
1457
1458 /* Count tokens shifted since error; after three, turn off error
1459 status. */
1460 if (yyerrstatus)
1461 yyerrstatus--;
1462
1463 /* Shift the lookahead token. */
1464 YY_SYMBOL_PRINT ("Shifting", yytoken, &yylval, &yylloc);
1465
1466 /* Discard the shifted token. */
1467 yychar = YYEMPTY;
1468
1469 yystate = yyn;
1470 *++yyvsp = yylval;
1471 ]b4_locations_if([ *++yylsp = yylloc;])[
1472 goto yynewstate;
1473
1474
1475 /*-----------------------------------------------------------.
1476 | yydefault -- do the default action for the current state. |
1477 `-----------------------------------------------------------*/
1478 yydefault:
1479 yyn = yydefact[yystate];
1480 if (yyn == 0)
1481 goto yyerrlab;
1482 goto yyreduce;
1483
1484
1485 /*-----------------------------.
1486 | yyreduce -- Do a reduction. |
1487 `-----------------------------*/
1488 yyreduce:
1489 /* yyn is the number of a rule to reduce with. */
1490 yylen = yyr2[yyn];
1491
1492 /* If YYLEN is nonzero, implement the default value of the action:
1493 `$$ = $1'.
1494
1495 Otherwise, the following line sets YYVAL to garbage.
1496 This behavior is undocumented and Bison
1497 users should not rely upon it. Assigning to YYVAL
1498 unconditionally makes the parser a bit smaller, and it avoids a
1499 GCC warning that YYVAL may be used uninitialized. */
1500 yyval = yyvsp[1-yylen];
1501
1502 ]b4_locations_if(
1503 [[ /* Default location. */
1504 YYLLOC_DEFAULT (yyloc, (yylsp - yylen), yylen);]])[
1505 YY_REDUCE_PRINT (yyn);
1506 switch (yyn)
1507 {
1508 ]b4_user_actions[
1509 default: break;
1510 }
1511 YY_SYMBOL_PRINT ("-> $$ =", yyr1[yyn], &yyval, &yyloc);
1512
1513 YYPOPSTACK (yylen);
1514 yylen = 0;
1515 YY_STACK_PRINT (yyss, yyssp);
1516
1517 *++yyvsp = yyval;
1518 ]b4_locations_if([ *++yylsp = yyloc;])[
1519
1520 /* Now `shift' the result of the reduction. Determine what state
1521 that goes to, based on the state we popped back to and the rule
1522 number reduced by. */
1523
1524 yyn = yyr1[yyn];
1525
1526 yystate = yypgoto[yyn - YYNTOKENS] + *yyssp;
1527 if (0 <= yystate && yystate <= YYLAST && yycheck[yystate] == *yyssp)
1528 yystate = yytable[yystate];
1529 else
1530 yystate = yydefgoto[yyn - YYNTOKENS];
1531
1532 goto yynewstate;
1533
1534
1535 /*------------------------------------.
1536 | yyerrlab -- here on detecting error |
1537 `------------------------------------*/
1538 yyerrlab:
1539 /* If not already recovering from an error, report this error. */
1540 if (!yyerrstatus)
1541 {
1542 ++yynerrs;
1543 #if ! YYERROR_VERBOSE
1544 yyerror (]b4_yyerror_args[YY_("syntax error"));
1545 #else
1546 {
1547 YYSIZE_T yysize = yysyntax_error (0, yystate, yychar);
1548 if (yymsg_alloc < yysize && yymsg_alloc < YYSTACK_ALLOC_MAXIMUM)
1549 {
1550 YYSIZE_T yyalloc = 2 * yysize;
1551 if (! (yysize <= yyalloc && yyalloc <= YYSTACK_ALLOC_MAXIMUM))
1552 yyalloc = YYSTACK_ALLOC_MAXIMUM;
1553 if (yymsg != yymsgbuf_ptr)
1554 YYSTACK_FREE (yymsg);
1555 yymsg = (char *) YYSTACK_ALLOC (yyalloc);
1556 if (yymsg)
1557 yymsg_alloc = yyalloc;
1558 else
1559 {
1560 yymsg = yymsgbuf_ptr;
1561 yymsg_alloc = sizeof yymsgbuf;
1562 }
1563 }
1564
1565 if (0 < yysize && yysize <= yymsg_alloc)
1566 {
1567 (void) yysyntax_error (yymsg, yystate, yychar);
1568 yyerror (]b4_yyerror_args[yymsg);
1569 }
1570 else
1571 {
1572 yyerror (]b4_yyerror_args[YY_("syntax error"));
1573 if (yysize != 0)
1574 goto yyexhaustedlab;
1575 }
1576 }
1577 #endif
1578 }
1579
1580 ]b4_locations_if([[ yyerror_range[0] = yylloc;]])[
1581
1582 if (yyerrstatus == 3)
1583 {
1584 /* If just tried and failed to reuse lookahead token after an
1585 error, discard it. */
1586
1587 if (yychar <= YYEOF)
1588 {
1589 /* Return failure if at end of input. */
1590 if (yychar == YYEOF)
1591 YYABORT;
1592 }
1593 else
1594 {
1595 yydestruct ("Error: discarding",
1596 yytoken, &yylval]b4_locations_if([, &yylloc])[]b4_user_args[);
1597 yychar = YYEMPTY;
1598 }
1599 }
1600
1601 /* Else will try to reuse lookahead token after shifting the error
1602 token. */
1603 goto yyerrlab1;
1604
1605
1606 /*---------------------------------------------------.
1607 | yyerrorlab -- error raised explicitly by YYERROR. |
1608 `---------------------------------------------------*/
1609 yyerrorlab:
1610
1611 /* Pacify compilers like GCC when the user code never invokes
1612 YYERROR and the label yyerrorlab therefore never appears in user
1613 code. */
1614 if (/*CONSTCOND*/ 0)
1615 goto yyerrorlab;
1616
1617 ]b4_locations_if([[ yyerror_range[0] = yylsp[1-yylen];
1618 ]])[ /* Do not reclaim the symbols of the rule which action triggered
1619 this YYERROR. */
1620 YYPOPSTACK (yylen);
1621 yylen = 0;
1622 YY_STACK_PRINT (yyss, yyssp);
1623 yystate = *yyssp;
1624 goto yyerrlab1;
1625
1626
1627 /*-------------------------------------------------------------.
1628 | yyerrlab1 -- common code for both syntax error and YYERROR. |
1629 `-------------------------------------------------------------*/
1630 yyerrlab1:
1631 yyerrstatus = 3; /* Each real token shifted decrements this. */
1632
1633 for (;;)
1634 {
1635 yyn = yypact[yystate];
1636 if (yyn != YYPACT_NINF)
1637 {
1638 yyn += YYTERROR;
1639 if (0 <= yyn && yyn <= YYLAST && yycheck[yyn] == YYTERROR)
1640 {
1641 yyn = yytable[yyn];
1642 if (0 < yyn)
1643 break;
1644 }
1645 }
1646
1647 /* Pop the current state because it cannot handle the error token. */
1648 if (yyssp == yyss)
1649 YYABORT;
1650
1651 ]b4_locations_if([[ yyerror_range[0] = *yylsp;]])[
1652 yydestruct ("Error: popping",
1653 yystos[yystate], yyvsp]b4_locations_if([, yylsp])[]b4_user_args[);
1654 YYPOPSTACK (1);
1655 yystate = *yyssp;
1656 YY_STACK_PRINT (yyss, yyssp);
1657 }
1658
1659 *++yyvsp = yylval;
1660 ]b4_locations_if([[
1661 yyerror_range[1] = yylloc;
1662 /* Using YYLLOC is tempting, but would change the location of
1663 the lookahead. YYLOC is available though. */
1664 YYLLOC_DEFAULT (yyloc, (yyerror_range- 1), 2);
1665 *++yylsp = yyloc;]])[
1666
1667 /* Shift the error token. */
1668 YY_SYMBOL_PRINT ("Shifting", yystos[yyn], yyvsp, yylsp);
1669
1670 yystate = yyn;
1671 goto yynewstate;
1672
1673
1674 /*-------------------------------------.
1675 | yyacceptlab -- YYACCEPT comes here. |
1676 `-------------------------------------*/
1677 yyacceptlab:
1678 yyresult = 0;
1679 goto yyreturn;
1680
1681 /*-----------------------------------.
1682 | yyabortlab -- YYABORT comes here. |
1683 `-----------------------------------*/
1684 yyabortlab:
1685 yyresult = 1;
1686 goto yyreturn;
1687
1688 #ifndef yyoverflow
1689 /*-------------------------------------------------.
1690 | yyexhaustedlab -- memory exhaustion comes here. |
1691 `-------------------------------------------------*/
1692 yyexhaustedlab:
1693 yyerror (]b4_yyerror_args[YY_("memory exhausted"));
1694 yyresult = 2;
1695 /* Fall through. */
1696 #endif
1697
1698 yyreturn:
1699 if (yychar != YYEMPTY)
1700 yydestruct ("Cleanup: discarding lookahead",
1701 yytoken, &yylval]b4_locations_if([, &yylloc])[]b4_user_args[);
1702 /* Do not reclaim the symbols of the rule which action triggered
1703 this YYABORT or YYACCEPT. */
1704 YYPOPSTACK (yylen);
1705 YY_STACK_PRINT (yyss, yyssp);
1706 while (yyssp != yyss)
1707 {
1708 yydestruct ("Cleanup: popping",
1709 yystos[*yyssp], yyvsp]b4_locations_if([, yylsp])[]b4_user_args[);
1710 YYPOPSTACK (1);
1711 }
1712 #ifndef yyoverflow
1713 if (yyss != yyssa_ptr)
1714 YYSTACK_FREE (yyss);
1715 #endif
1716 #if YYERROR_VERBOSE
1717 if (yymsg != yymsgbuf_ptr)
1718 YYSTACK_FREE (yymsg);
1719 #endif
1720 ]b4_push_if([pv->yyresult = YYID (yyresult);],[
1721 /* Make sure YYID is used. */
1722 return YYID (yyresult);
1723 ])[
1724 ]}
1725
1726 b4_push_if([
1727 #ifdef YYPARSE_PARAM
1728 b4_c_function_def([yyparse], [int], [[void *YYPARSE_PARAM], [YYPARSE_PARAM]])
1729 #else /* ! YYPARSE_PARAM */
1730 b4_c_function_def([yyparse], [int], b4_parse_param)
1731 #endif
1732 {[
1733 struct yypvars *ctx = yypvarsinit ();
1734 int status;
1735 do {
1736 yychar_set (ctx, yylex ());
1737 yylval_set (ctx, yylval);
1738 #ifdef YYLTYPE_IS_TRIVIAL
1739 yylloc_set (ctx, yylloc);
1740 #endif
1741 yypushparse (ctx);
1742 status = yyresult_get (ctx);
1743 } while (status == 4);
1744 free (ctx);
1745 return status;
1746 ]}])
1747
1748
1749 b4_epilogue
1750 b4_defines_if(
1751 [@output @output_header_name@
1752 b4_copyright([Skeleton interface for Bison's Yacc-like parsers in C],dnl '
1753 [1984, 1989, 1990, 2000, 2001, 2002, 2003, 2004, 2005, 2006])
1754
1755 m4_ifdef([b4_start_header],
1756 [[/* Copy the %start-header blocks. */
1757 ]b4_start_header])[]dnl
1758
1759 b4_token_enums_defines(b4_tokens)
1760
1761 [#if ! defined YYSTYPE && ! defined YYSTYPE_IS_DECLARED
1762 ]m4_ifdef([b4_stype],
1763 [[typedef union ]b4_union_name[
1764 ]b4_user_stype[
1765 YYSTYPE;
1766 # define YYSTYPE_IS_TRIVIAL 1]],
1767 [m4_if(b4_tag_seen_flag, 0,
1768 [[typedef int YYSTYPE;
1769 # define YYSTYPE_IS_TRIVIAL 1]])])[
1770 # define yystype YYSTYPE /* obsolescent; will be withdrawn */
1771 # define YYSTYPE_IS_DECLARED 1
1772 #endif
1773
1774 ]b4_pure_if([],
1775 [extern YYSTYPE b4_prefix[]lval;])
1776
1777 b4_locations_if(
1778 [#if ! defined YYLTYPE && ! defined YYLTYPE_IS_DECLARED
1779 typedef struct YYLTYPE
1780 {
1781 int first_line;
1782 int first_column;
1783 int last_line;
1784 int last_column;
1785 } YYLTYPE;
1786 # define yyltype YYLTYPE /* obsolescent; will be withdrawn */
1787 # define YYLTYPE_IS_DECLARED 1
1788 # define YYLTYPE_IS_TRIVIAL 1
1789 #endif
1790
1791 ]b4_push_if([struct ]b4_prefix[pvars;])[
1792 ]b4_pure_if([],
1793 [extern YYLTYPE b4_prefix[]lloc;])
1794 )dnl b4_locations_if
1795
1796 m4_ifdef([b4_end_header],
1797 [[/* Copy the %end-header blocks. */
1798 ]b4_end_header])[]dnl
1799 ])dnl b4_defines_if
bison