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Bash-4.3 patch 32
[thirdparty/bash.git] / y.tab.c
1 /* A Bison parser, made by GNU Bison 2.3. */
2
3 /* Skeleton implementation for Bison's Yacc-like parsers in C
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, or (at your option)
11 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,
21 Boston, MA 02110-1301, USA. */
22
23 /* As a special exception, you may create a larger work that contains
24 part or all of the Bison parser skeleton and distribute that work
25 under terms of your choice, so long as that work isn't itself a
26 parser generator using the skeleton or a modified version thereof
27 as a parser skeleton. Alternatively, if you modify or redistribute
28 the parser skeleton itself, you may (at your option) remove this
29 special exception, which will cause the skeleton and the resulting
30 Bison output files to be licensed under the GNU General Public
31 License without this special exception.
32
33 This special exception was added by the Free Software Foundation in
34 version 2.2 of Bison. */
35
36 /* C LALR(1) parser skeleton written by Richard Stallman, by
37 simplifying the original so-called "semantic" parser. */
38
39 /* All symbols defined below should begin with yy or YY, to avoid
40 infringing on user name space. This should be done even for local
41 variables, as they might otherwise be expanded by user macros.
42 There are some unavoidable exceptions within include files to
43 define necessary library symbols; they are noted "INFRINGES ON
44 USER NAME SPACE" below. */
45
46 /* Identify Bison output. */
47 #define YYBISON 1
48
49 /* Bison version. */
50 #define YYBISON_VERSION "2.3"
51
52 /* Skeleton name. */
53 #define YYSKELETON_NAME "yacc.c"
54
55 /* Pure parsers. */
56 #define YYPURE 0
57
58 /* Using locations. */
59 #define YYLSP_NEEDED 0
60
61
62
63 /* Tokens. */
64 #ifndef YYTOKENTYPE
65 # define YYTOKENTYPE
66 /* Put the tokens into the symbol table, so that GDB and other debuggers
67 know about them. */
68 enum yytokentype {
69 IF = 258,
70 THEN = 259,
71 ELSE = 260,
72 ELIF = 261,
73 FI = 262,
74 CASE = 263,
75 ESAC = 264,
76 FOR = 265,
77 SELECT = 266,
78 WHILE = 267,
79 UNTIL = 268,
80 DO = 269,
81 DONE = 270,
82 FUNCTION = 271,
83 COPROC = 272,
84 COND_START = 273,
85 COND_END = 274,
86 COND_ERROR = 275,
87 IN = 276,
88 BANG = 277,
89 TIME = 278,
90 TIMEOPT = 279,
91 TIMEIGN = 280,
92 WORD = 281,
93 ASSIGNMENT_WORD = 282,
94 REDIR_WORD = 283,
95 NUMBER = 284,
96 ARITH_CMD = 285,
97 ARITH_FOR_EXPRS = 286,
98 COND_CMD = 287,
99 AND_AND = 288,
100 OR_OR = 289,
101 GREATER_GREATER = 290,
102 LESS_LESS = 291,
103 LESS_AND = 292,
104 LESS_LESS_LESS = 293,
105 GREATER_AND = 294,
106 SEMI_SEMI = 295,
107 SEMI_AND = 296,
108 SEMI_SEMI_AND = 297,
109 LESS_LESS_MINUS = 298,
110 AND_GREATER = 299,
111 AND_GREATER_GREATER = 300,
112 LESS_GREATER = 301,
113 GREATER_BAR = 302,
114 BAR_AND = 303,
115 yacc_EOF = 304
116 };
117 #endif
118 /* Tokens. */
119 #define IF 258
120 #define THEN 259
121 #define ELSE 260
122 #define ELIF 261
123 #define FI 262
124 #define CASE 263
125 #define ESAC 264
126 #define FOR 265
127 #define SELECT 266
128 #define WHILE 267
129 #define UNTIL 268
130 #define DO 269
131 #define DONE 270
132 #define FUNCTION 271
133 #define COPROC 272
134 #define COND_START 273
135 #define COND_END 274
136 #define COND_ERROR 275
137 #define IN 276
138 #define BANG 277
139 #define TIME 278
140 #define TIMEOPT 279
141 #define TIMEIGN 280
142 #define WORD 281
143 #define ASSIGNMENT_WORD 282
144 #define REDIR_WORD 283
145 #define NUMBER 284
146 #define ARITH_CMD 285
147 #define ARITH_FOR_EXPRS 286
148 #define COND_CMD 287
149 #define AND_AND 288
150 #define OR_OR 289
151 #define GREATER_GREATER 290
152 #define LESS_LESS 291
153 #define LESS_AND 292
154 #define LESS_LESS_LESS 293
155 #define GREATER_AND 294
156 #define SEMI_SEMI 295
157 #define SEMI_AND 296
158 #define SEMI_SEMI_AND 297
159 #define LESS_LESS_MINUS 298
160 #define AND_GREATER 299
161 #define AND_GREATER_GREATER 300
162 #define LESS_GREATER 301
163 #define GREATER_BAR 302
164 #define BAR_AND 303
165 #define yacc_EOF 304
166
167
168
169
170 /* Copy the first part of user declarations. */
171 #line 21 "/usr/src/local/bash/bash-4.3-patched/parse.y"
172
173 #include "config.h"
174
175 #include "bashtypes.h"
176 #include "bashansi.h"
177
178 #include "filecntl.h"
179
180 #if defined (HAVE_UNISTD_H)
181 # include <unistd.h>
182 #endif
183
184 #if defined (HAVE_LOCALE_H)
185 # include <locale.h>
186 #endif
187
188 #include <stdio.h>
189 #include "chartypes.h"
190 #include <signal.h>
191
192 #include "memalloc.h"
193
194 #include "bashintl.h"
195
196 #define NEED_STRFTIME_DECL /* used in externs.h */
197
198 #include "shell.h"
199 #include "typemax.h" /* SIZE_MAX if needed */
200 #include "trap.h"
201 #include "flags.h"
202 #include "parser.h"
203 #include "mailcheck.h"
204 #include "test.h"
205 #include "builtins.h"
206 #include "builtins/common.h"
207 #include "builtins/builtext.h"
208
209 #include "shmbutil.h"
210
211 #if defined (READLINE)
212 # include "bashline.h"
213 # include <readline/readline.h>
214 #endif /* READLINE */
215
216 #if defined (HISTORY)
217 # include "bashhist.h"
218 # include <readline/history.h>
219 #endif /* HISTORY */
220
221 #if defined (JOB_CONTROL)
222 # include "jobs.h"
223 #endif /* JOB_CONTROL */
224
225 #if defined (ALIAS)
226 # include "alias.h"
227 #else
228 typedef void *alias_t;
229 #endif /* ALIAS */
230
231 #if defined (PROMPT_STRING_DECODE)
232 # ifndef _MINIX
233 # include <sys/param.h>
234 # endif
235 # include <time.h>
236 # if defined (TM_IN_SYS_TIME)
237 # include <sys/types.h>
238 # include <sys/time.h>
239 # endif /* TM_IN_SYS_TIME */
240 # include "maxpath.h"
241 #endif /* PROMPT_STRING_DECODE */
242
243 #define RE_READ_TOKEN -99
244 #define NO_EXPANSION -100
245
246 #ifdef DEBUG
247 # define YYDEBUG 1
248 #else
249 # define YYDEBUG 0
250 #endif
251
252 #if defined (HANDLE_MULTIBYTE)
253 # define last_shell_getc_is_singlebyte \
254 ((shell_input_line_index > 1) \
255 ? shell_input_line_property[shell_input_line_index - 1] \
256 : 1)
257 # define MBTEST(x) ((x) && last_shell_getc_is_singlebyte)
258 #else
259 # define last_shell_getc_is_singlebyte 1
260 # define MBTEST(x) ((x))
261 #endif
262
263 #if defined (EXTENDED_GLOB)
264 extern int extended_glob;
265 #endif
266
267 extern int eof_encountered;
268 extern int no_line_editing, running_under_emacs;
269 extern int current_command_number;
270 extern int sourcelevel, parse_and_execute_level;
271 extern int posixly_correct;
272 extern int last_command_exit_value;
273 extern pid_t last_command_subst_pid;
274 extern char *shell_name, *current_host_name;
275 extern char *dist_version;
276 extern int patch_level;
277 extern int dump_translatable_strings, dump_po_strings;
278 extern sh_builtin_func_t *last_shell_builtin, *this_shell_builtin;
279 #if defined (BUFFERED_INPUT)
280 extern int bash_input_fd_changed;
281 #endif
282
283 extern int errno;
284 /* **************************************************************** */
285 /* */
286 /* "Forward" declarations */
287 /* */
288 /* **************************************************************** */
289
290 #ifdef DEBUG
291 static void debug_parser __P((int));
292 #endif
293
294 static int yy_getc __P((void));
295 static int yy_ungetc __P((int));
296
297 #if defined (READLINE)
298 static int yy_readline_get __P((void));
299 static int yy_readline_unget __P((int));
300 #endif
301
302 static int yy_string_get __P((void));
303 static int yy_string_unget __P((int));
304 static void rewind_input_string __P((void));
305 static int yy_stream_get __P((void));
306 static int yy_stream_unget __P((int));
307
308 static int shell_getc __P((int));
309 static void shell_ungetc __P((int));
310 static void discard_until __P((int));
311
312 #if defined (ALIAS) || defined (DPAREN_ARITHMETIC)
313 static void push_string __P((char *, int, alias_t *));
314 static void pop_string __P((void));
315 static void free_string_list __P((void));
316 #endif
317
318 static char *read_a_line __P((int));
319
320 static int reserved_word_acceptable __P((int));
321 static int yylex __P((void));
322
323 static void push_heredoc __P((REDIRECT *));
324 static char *mk_alexpansion __P((char *));
325 static int alias_expand_token __P((char *));
326 static int time_command_acceptable __P((void));
327 static int special_case_tokens __P((char *));
328 static int read_token __P((int));
329 static char *parse_matched_pair __P((int, int, int, int *, int));
330 static char *parse_comsub __P((int, int, int, int *, int));
331 #if defined (ARRAY_VARS)
332 static char *parse_compound_assignment __P((int *));
333 #endif
334 #if defined (DPAREN_ARITHMETIC) || defined (ARITH_FOR_COMMAND)
335 static int parse_dparen __P((int));
336 static int parse_arith_cmd __P((char **, int));
337 #endif
338 #if defined (COND_COMMAND)
339 static void cond_error __P((void));
340 static COND_COM *cond_expr __P((void));
341 static COND_COM *cond_or __P((void));
342 static COND_COM *cond_and __P((void));
343 static COND_COM *cond_term __P((void));
344 static int cond_skip_newlines __P((void));
345 static COMMAND *parse_cond_command __P((void));
346 #endif
347 #if defined (ARRAY_VARS)
348 static int token_is_assignment __P((char *, int));
349 static int token_is_ident __P((char *, int));
350 #endif
351 static int read_token_word __P((int));
352 static void discard_parser_constructs __P((int));
353
354 static char *error_token_from_token __P((int));
355 static char *error_token_from_text __P((void));
356 static void print_offending_line __P((void));
357 static void report_syntax_error __P((char *));
358
359 static void handle_eof_input_unit __P((void));
360 static void prompt_again __P((void));
361 #if 0
362 static void reset_readline_prompt __P((void));
363 #endif
364 static void print_prompt __P((void));
365
366 #if defined (HANDLE_MULTIBYTE)
367 static void set_line_mbstate __P((void));
368 static char *shell_input_line_property = NULL;
369 #else
370 # define set_line_mbstate()
371 #endif
372
373 extern int yyerror __P((const char *));
374
375 #ifdef DEBUG
376 extern int yydebug;
377 #endif
378
379 /* Default prompt strings */
380 char *primary_prompt = PPROMPT;
381 char *secondary_prompt = SPROMPT;
382
383 /* PROMPT_STRING_POINTER points to one of these, never to an actual string. */
384 char *ps1_prompt, *ps2_prompt;
385
386 /* Handle on the current prompt string. Indirectly points through
387 ps1_ or ps2_prompt. */
388 char **prompt_string_pointer = (char **)NULL;
389 char *current_prompt_string;
390
391 /* Non-zero means we expand aliases in commands. */
392 int expand_aliases = 0;
393
394 /* If non-zero, the decoded prompt string undergoes parameter and
395 variable substitution, command substitution, arithmetic substitution,
396 string expansion, process substitution, and quote removal in
397 decode_prompt_string. */
398 int promptvars = 1;
399
400 /* If non-zero, $'...' and $"..." are expanded when they appear within
401 a ${...} expansion, even when the expansion appears within double
402 quotes. */
403 int extended_quote = 1;
404
405 /* The number of lines read from input while creating the current command. */
406 int current_command_line_count;
407
408 /* The number of lines in a command saved while we run parse_and_execute */
409 int saved_command_line_count;
410
411 /* The token that currently denotes the end of parse. */
412 int shell_eof_token;
413
414 /* The token currently being read. */
415 int current_token;
416
417 /* The current parser state. */
418 int parser_state;
419
420 /* Variables to manage the task of reading here documents, because we need to
421 defer the reading until after a complete command has been collected. */
422 #define HEREDOC_MAX 16
423
424 static REDIRECT *redir_stack[HEREDOC_MAX];
425 int need_here_doc;
426
427 /* Where shell input comes from. History expansion is performed on each
428 line when the shell is interactive. */
429 static char *shell_input_line = (char *)NULL;
430 static size_t shell_input_line_index;
431 static size_t shell_input_line_size; /* Amount allocated for shell_input_line. */
432 static size_t shell_input_line_len; /* strlen (shell_input_line) */
433
434 /* Either zero or EOF. */
435 static int shell_input_line_terminator;
436
437 /* The line number in a script on which a function definition starts. */
438 static int function_dstart;
439
440 /* The line number in a script on which a function body starts. */
441 static int function_bstart;
442
443 /* The line number in a script at which an arithmetic for command starts. */
444 static int arith_for_lineno;
445
446 /* The decoded prompt string. Used if READLINE is not defined or if
447 editing is turned off. Analogous to current_readline_prompt. */
448 static char *current_decoded_prompt;
449
450 /* The last read token, or NULL. read_token () uses this for context
451 checking. */
452 static int last_read_token;
453
454 /* The token read prior to last_read_token. */
455 static int token_before_that;
456
457 /* The token read prior to token_before_that. */
458 static int two_tokens_ago;
459
460 static int global_extglob;
461
462 /* The line number in a script where the word in a `case WORD', `select WORD'
463 or `for WORD' begins. This is a nested command maximum, since the array
464 index is decremented after a case, select, or for command is parsed. */
465 #define MAX_CASE_NEST 128
466 static int word_lineno[MAX_CASE_NEST+1];
467 static int word_top = -1;
468
469 /* If non-zero, it is the token that we want read_token to return
470 regardless of what text is (or isn't) present to be read. This
471 is reset by read_token. If token_to_read == WORD or
472 ASSIGNMENT_WORD, yylval.word should be set to word_desc_to_read. */
473 static int token_to_read;
474 static WORD_DESC *word_desc_to_read;
475
476 static REDIRECTEE source;
477 static REDIRECTEE redir;
478
479
480 /* Enabling traces. */
481 #ifndef YYDEBUG
482 # define YYDEBUG 0
483 #endif
484
485 /* Enabling verbose error messages. */
486 #ifdef YYERROR_VERBOSE
487 # undef YYERROR_VERBOSE
488 # define YYERROR_VERBOSE 1
489 #else
490 # define YYERROR_VERBOSE 0
491 #endif
492
493 /* Enabling the token table. */
494 #ifndef YYTOKEN_TABLE
495 # define YYTOKEN_TABLE 0
496 #endif
497
498 #if ! defined YYSTYPE && ! defined YYSTYPE_IS_DECLARED
499 typedef union YYSTYPE
500 #line 329 "/usr/src/local/bash/bash-4.3-patched/parse.y"
501 {
502 WORD_DESC *word; /* the word that we read. */
503 int number; /* the number that we read. */
504 WORD_LIST *word_list;
505 COMMAND *command;
506 REDIRECT *redirect;
507 ELEMENT element;
508 PATTERN_LIST *pattern;
509 }
510 /* Line 193 of yacc.c. */
511 #line 512 "y.tab.c"
512 YYSTYPE;
513 # define yystype YYSTYPE /* obsolescent; will be withdrawn */
514 # define YYSTYPE_IS_DECLARED 1
515 # define YYSTYPE_IS_TRIVIAL 1
516 #endif
517
518
519
520 /* Copy the second part of user declarations. */
521
522
523 /* Line 216 of yacc.c. */
524 #line 525 "y.tab.c"
525
526 #ifdef short
527 # undef short
528 #endif
529
530 #ifdef YYTYPE_UINT8
531 typedef YYTYPE_UINT8 yytype_uint8;
532 #else
533 typedef unsigned char yytype_uint8;
534 #endif
535
536 #ifdef YYTYPE_INT8
537 typedef YYTYPE_INT8 yytype_int8;
538 #elif (defined __STDC__ || defined __C99__FUNC__ \
539 || defined __cplusplus || defined _MSC_VER)
540 typedef signed char yytype_int8;
541 #else
542 typedef short int yytype_int8;
543 #endif
544
545 #ifdef YYTYPE_UINT16
546 typedef YYTYPE_UINT16 yytype_uint16;
547 #else
548 typedef unsigned short int yytype_uint16;
549 #endif
550
551 #ifdef YYTYPE_INT16
552 typedef YYTYPE_INT16 yytype_int16;
553 #else
554 typedef short int yytype_int16;
555 #endif
556
557 #ifndef YYSIZE_T
558 # ifdef __SIZE_TYPE__
559 # define YYSIZE_T __SIZE_TYPE__
560 # elif defined size_t
561 # define YYSIZE_T size_t
562 # elif ! defined YYSIZE_T && (defined __STDC__ || defined __C99__FUNC__ \
563 || defined __cplusplus || defined _MSC_VER)
564 # include <stddef.h> /* INFRINGES ON USER NAME SPACE */
565 # define YYSIZE_T size_t
566 # else
567 # define YYSIZE_T unsigned int
568 # endif
569 #endif
570
571 #define YYSIZE_MAXIMUM ((YYSIZE_T) -1)
572
573 #ifndef YY_
574 # if defined YYENABLE_NLS && YYENABLE_NLS
575 # if ENABLE_NLS
576 # include <libintl.h> /* INFRINGES ON USER NAME SPACE */
577 # define YY_(msgid) dgettext ("bison-runtime", msgid)
578 # endif
579 # endif
580 # ifndef YY_
581 # define YY_(msgid) msgid
582 # endif
583 #endif
584
585 /* Suppress unused-variable warnings by "using" E. */
586 #if ! defined lint || defined __GNUC__
587 # define YYUSE(e) ((void) (e))
588 #else
589 # define YYUSE(e) /* empty */
590 #endif
591
592 /* Identity function, used to suppress warnings about constant conditions. */
593 #ifndef lint
594 # define YYID(n) (n)
595 #else
596 #if (defined __STDC__ || defined __C99__FUNC__ \
597 || defined __cplusplus || defined _MSC_VER)
598 static int
599 YYID (int i)
600 #else
601 static int
602 YYID (i)
603 int i;
604 #endif
605 {
606 return i;
607 }
608 #endif
609
610 #if ! defined yyoverflow || YYERROR_VERBOSE
611
612 /* The parser invokes alloca or malloc; define the necessary symbols. */
613
614 # ifdef YYSTACK_USE_ALLOCA
615 # if YYSTACK_USE_ALLOCA
616 # ifdef __GNUC__
617 # define YYSTACK_ALLOC __builtin_alloca
618 # elif defined __BUILTIN_VA_ARG_INCR
619 # include <alloca.h> /* INFRINGES ON USER NAME SPACE */
620 # elif defined _AIX
621 # define YYSTACK_ALLOC __alloca
622 # elif defined _MSC_VER
623 # include <malloc.h> /* INFRINGES ON USER NAME SPACE */
624 # define alloca _alloca
625 # else
626 # define YYSTACK_ALLOC alloca
627 # if ! defined _ALLOCA_H && ! defined _STDLIB_H && (defined __STDC__ || defined __C99__FUNC__ \
628 || defined __cplusplus || defined _MSC_VER)
629 # include <stdlib.h> /* INFRINGES ON USER NAME SPACE */
630 # ifndef _STDLIB_H
631 # define _STDLIB_H 1
632 # endif
633 # endif
634 # endif
635 # endif
636 # endif
637
638 # ifdef YYSTACK_ALLOC
639 /* Pacify GCC's `empty if-body' warning. */
640 # define YYSTACK_FREE(Ptr) do { /* empty */; } while (YYID (0))
641 # ifndef YYSTACK_ALLOC_MAXIMUM
642 /* The OS might guarantee only one guard page at the bottom of the stack,
643 and a page size can be as small as 4096 bytes. So we cannot safely
644 invoke alloca (N) if N exceeds 4096. Use a slightly smaller number
645 to allow for a few compiler-allocated temporary stack slots. */
646 # define YYSTACK_ALLOC_MAXIMUM 4032 /* reasonable circa 2006 */
647 # endif
648 # else
649 # define YYSTACK_ALLOC YYMALLOC
650 # define YYSTACK_FREE YYFREE
651 # ifndef YYSTACK_ALLOC_MAXIMUM
652 # define YYSTACK_ALLOC_MAXIMUM YYSIZE_MAXIMUM
653 # endif
654 # if (defined __cplusplus && ! defined _STDLIB_H \
655 && ! ((defined YYMALLOC || defined malloc) \
656 && (defined YYFREE || defined free)))
657 # include <stdlib.h> /* INFRINGES ON USER NAME SPACE */
658 # ifndef _STDLIB_H
659 # define _STDLIB_H 1
660 # endif
661 # endif
662 # ifndef YYMALLOC
663 # define YYMALLOC malloc
664 # if ! defined malloc && ! defined _STDLIB_H && (defined __STDC__ || defined __C99__FUNC__ \
665 || defined __cplusplus || defined _MSC_VER)
666 void *malloc (YYSIZE_T); /* INFRINGES ON USER NAME SPACE */
667 # endif
668 # endif
669 # ifndef YYFREE
670 # define YYFREE free
671 # if ! defined free && ! defined _STDLIB_H && (defined __STDC__ || defined __C99__FUNC__ \
672 || defined __cplusplus || defined _MSC_VER)
673 void free (void *); /* INFRINGES ON USER NAME SPACE */
674 # endif
675 # endif
676 # endif
677 #endif /* ! defined yyoverflow || YYERROR_VERBOSE */
678
679
680 #if (! defined yyoverflow \
681 && (! defined __cplusplus \
682 || (defined YYSTYPE_IS_TRIVIAL && YYSTYPE_IS_TRIVIAL)))
683
684 /* A type that is properly aligned for any stack member. */
685 union yyalloc
686 {
687 yytype_int16 yyss;
688 YYSTYPE yyvs;
689 };
690
691 /* The size of the maximum gap between one aligned stack and the next. */
692 # define YYSTACK_GAP_MAXIMUM (sizeof (union yyalloc) - 1)
693
694 /* The size of an array large to enough to hold all stacks, each with
695 N elements. */
696 # define YYSTACK_BYTES(N) \
697 ((N) * (sizeof (yytype_int16) + sizeof (YYSTYPE)) \
698 + YYSTACK_GAP_MAXIMUM)
699
700 /* Copy COUNT objects from FROM to TO. The source and destination do
701 not overlap. */
702 # ifndef YYCOPY
703 # if defined __GNUC__ && 1 < __GNUC__
704 # define YYCOPY(To, From, Count) \
705 __builtin_memcpy (To, From, (Count) * sizeof (*(From)))
706 # else
707 # define YYCOPY(To, From, Count) \
708 do \
709 { \
710 YYSIZE_T yyi; \
711 for (yyi = 0; yyi < (Count); yyi++) \
712 (To)[yyi] = (From)[yyi]; \
713 } \
714 while (YYID (0))
715 # endif
716 # endif
717
718 /* Relocate STACK from its old location to the new one. The
719 local variables YYSIZE and YYSTACKSIZE give the old and new number of
720 elements in the stack, and YYPTR gives the new location of the
721 stack. Advance YYPTR to a properly aligned location for the next
722 stack. */
723 # define YYSTACK_RELOCATE(Stack) \
724 do \
725 { \
726 YYSIZE_T yynewbytes; \
727 YYCOPY (&yyptr->Stack, Stack, yysize); \
728 Stack = &yyptr->Stack; \
729 yynewbytes = yystacksize * sizeof (*Stack) + YYSTACK_GAP_MAXIMUM; \
730 yyptr += yynewbytes / sizeof (*yyptr); \
731 } \
732 while (YYID (0))
733
734 #endif
735
736 /* YYFINAL -- State number of the termination state. */
737 #define YYFINAL 116
738 /* YYLAST -- Last index in YYTABLE. */
739 #define YYLAST 659
740
741 /* YYNTOKENS -- Number of terminals. */
742 #define YYNTOKENS 61
743 /* YYNNTS -- Number of nonterminals. */
744 #define YYNNTS 38
745 /* YYNRULES -- Number of rules. */
746 #define YYNRULES 167
747 /* YYNRULES -- Number of states. */
748 #define YYNSTATES 342
749
750 /* YYTRANSLATE(YYLEX) -- Bison symbol number corresponding to YYLEX. */
751 #define YYUNDEFTOK 2
752 #define YYMAXUTOK 304
753
754 #define YYTRANSLATE(YYX) \
755 ((unsigned int) (YYX) <= YYMAXUTOK ? yytranslate[YYX] : YYUNDEFTOK)
756
757 /* YYTRANSLATE[YYLEX] -- Bison symbol number corresponding to YYLEX. */
758 static const yytype_uint8 yytranslate[] =
759 {
760 0, 2, 2, 2, 2, 2, 2, 2, 2, 2,
761 51, 2, 2, 2, 2, 2, 2, 2, 2, 2,
762 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
763 2, 2, 2, 2, 2, 2, 2, 2, 49, 2,
764 59, 60, 2, 2, 2, 56, 2, 2, 2, 2,
765 2, 2, 2, 2, 2, 2, 2, 2, 2, 50,
766 55, 2, 54, 2, 2, 2, 2, 2, 2, 2,
767 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
768 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
769 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
770 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
771 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
772 2, 2, 2, 57, 53, 58, 2, 2, 2, 2,
773 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
774 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
775 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
776 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
777 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
778 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
779 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
780 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
781 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
782 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
783 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
784 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
785 2, 2, 2, 2, 2, 2, 1, 2, 3, 4,
786 5, 6, 7, 8, 9, 10, 11, 12, 13, 14,
787 15, 16, 17, 18, 19, 20, 21, 22, 23, 24,
788 25, 26, 27, 28, 29, 30, 31, 32, 33, 34,
789 35, 36, 37, 38, 39, 40, 41, 42, 43, 44,
790 45, 46, 47, 48, 52
791 };
792
793 #if YYDEBUG
794 /* YYPRHS[YYN] -- Index of the first RHS symbol of rule number YYN in
795 YYRHS. */
796 static const yytype_uint16 yyprhs[] =
797 {
798 0, 0, 3, 6, 8, 11, 13, 15, 18, 21,
799 24, 28, 32, 36, 40, 43, 47, 51, 54, 58,
800 62, 65, 69, 73, 76, 80, 84, 87, 91, 95,
801 98, 102, 106, 109, 113, 117, 120, 124, 128, 131,
802 135, 139, 142, 146, 150, 153, 157, 161, 164, 168,
803 172, 175, 178, 180, 182, 184, 186, 189, 191, 194,
804 196, 198, 201, 203, 205, 207, 209, 215, 221, 223,
805 225, 227, 229, 231, 233, 235, 242, 249, 257, 265,
806 276, 287, 297, 307, 315, 323, 329, 335, 342, 349,
807 357, 365, 376, 387, 394, 402, 409, 415, 422, 427,
808 429, 432, 436, 439, 443, 447, 452, 455, 461, 469,
809 476, 480, 482, 486, 491, 498, 504, 506, 509, 514,
810 519, 525, 531, 534, 538, 541, 545, 548, 552, 554,
811 558, 561, 563, 566, 570, 574, 578, 583, 588, 593,
812 598, 603, 605, 607, 609, 611, 613, 615, 616, 619,
813 621, 624, 627, 632, 637, 641, 645, 647, 649, 652,
814 655, 658, 661, 666, 671, 673, 675, 678
815 };
816
817 /* YYRHS -- A `-1'-separated list of the rules' RHS. */
818 static const yytype_int8 yyrhs[] =
819 {
820 62, 0, -1, 94, 91, -1, 51, -1, 1, 51,
821 -1, 52, -1, 26, -1, 63, 26, -1, 54, 26,
822 -1, 55, 26, -1, 29, 54, 26, -1, 29, 55,
823 26, -1, 28, 54, 26, -1, 28, 55, 26, -1,
824 35, 26, -1, 29, 35, 26, -1, 28, 35, 26,
825 -1, 47, 26, -1, 29, 47, 26, -1, 28, 47,
826 26, -1, 46, 26, -1, 29, 46, 26, -1, 28,
827 46, 26, -1, 36, 26, -1, 29, 36, 26, -1,
828 28, 36, 26, -1, 43, 26, -1, 29, 43, 26,
829 -1, 28, 43, 26, -1, 38, 26, -1, 29, 38,
830 26, -1, 28, 38, 26, -1, 37, 29, -1, 29,
831 37, 29, -1, 28, 37, 29, -1, 39, 29, -1,
832 29, 39, 29, -1, 28, 39, 29, -1, 37, 26,
833 -1, 29, 37, 26, -1, 28, 37, 26, -1, 39,
834 26, -1, 29, 39, 26, -1, 28, 39, 26, -1,
835 39, 56, -1, 29, 39, 56, -1, 28, 39, 56,
836 -1, 37, 56, -1, 29, 37, 56, -1, 28, 37,
837 56, -1, 44, 26, -1, 45, 26, -1, 26, -1,
838 27, -1, 64, -1, 64, -1, 66, 64, -1, 65,
839 -1, 67, 65, -1, 67, -1, 69, -1, 69, 66,
840 -1, 74, -1, 77, -1, 70, -1, 73, -1, 12,
841 88, 14, 88, 15, -1, 13, 88, 14, 88, 15,
842 -1, 72, -1, 78, -1, 76, -1, 79, -1, 80,
843 -1, 81, -1, 71, -1, 10, 26, 93, 14, 88,
844 15, -1, 10, 26, 93, 57, 88, 58, -1, 10,
845 26, 50, 93, 14, 88, 15, -1, 10, 26, 50,
846 93, 57, 88, 58, -1, 10, 26, 93, 21, 63,
847 92, 93, 14, 88, 15, -1, 10, 26, 93, 21,
848 63, 92, 93, 57, 88, 58, -1, 10, 26, 93,
849 21, 92, 93, 14, 88, 15, -1, 10, 26, 93,
850 21, 92, 93, 57, 88, 58, -1, 10, 31, 92,
851 93, 14, 88, 15, -1, 10, 31, 92, 93, 57,
852 88, 58, -1, 10, 31, 14, 88, 15, -1, 10,
853 31, 57, 88, 58, -1, 11, 26, 93, 14, 87,
854 15, -1, 11, 26, 93, 57, 87, 58, -1, 11,
855 26, 50, 93, 14, 87, 15, -1, 11, 26, 50,
856 93, 57, 87, 58, -1, 11, 26, 93, 21, 63,
857 92, 93, 14, 87, 15, -1, 11, 26, 93, 21,
858 63, 92, 93, 57, 87, 58, -1, 8, 26, 93,
859 21, 93, 9, -1, 8, 26, 93, 21, 85, 93,
860 9, -1, 8, 26, 93, 21, 83, 9, -1, 26,
861 59, 60, 93, 75, -1, 16, 26, 59, 60, 93,
862 75, -1, 16, 26, 93, 75, -1, 69, -1, 69,
863 66, -1, 59, 88, 60, -1, 17, 69, -1, 17,
864 69, 66, -1, 17, 26, 69, -1, 17, 26, 69,
865 66, -1, 17, 67, -1, 3, 88, 4, 88, 7,
866 -1, 3, 88, 4, 88, 5, 88, 7, -1, 3,
867 88, 4, 88, 82, 7, -1, 57, 88, 58, -1,
868 30, -1, 18, 32, 19, -1, 6, 88, 4, 88,
869 -1, 6, 88, 4, 88, 5, 88, -1, 6, 88,
870 4, 88, 82, -1, 84, -1, 85, 84, -1, 93,
871 86, 60, 88, -1, 93, 86, 60, 93, -1, 93,
872 59, 86, 60, 88, -1, 93, 59, 86, 60, 93,
873 -1, 84, 40, -1, 85, 84, 40, -1, 84, 41,
874 -1, 85, 84, 41, -1, 84, 42, -1, 85, 84,
875 42, -1, 26, -1, 86, 53, 26, -1, 93, 89,
876 -1, 87, -1, 93, 90, -1, 90, 51, 93, -1,
877 90, 49, 93, -1, 90, 50, 93, -1, 90, 33,
878 93, 90, -1, 90, 34, 93, 90, -1, 90, 49,
879 93, 90, -1, 90, 50, 93, 90, -1, 90, 51,
880 93, 90, -1, 96, -1, 51, -1, 52, -1, 51,
881 -1, 50, -1, 52, -1, -1, 93, 51, -1, 95,
882 -1, 95, 49, -1, 95, 50, -1, 95, 33, 93,
883 95, -1, 95, 34, 93, 95, -1, 95, 49, 95,
884 -1, 95, 50, 95, -1, 96, -1, 97, -1, 22,
885 96, -1, 98, 96, -1, 98, 92, -1, 22, 92,
886 -1, 97, 53, 93, 97, -1, 97, 48, 93, 97,
887 -1, 68, -1, 23, -1, 23, 24, -1, 23, 24,
888 25, -1
889 };
890
891 /* YYRLINE[YYN] -- source line where rule number YYN was defined. */
892 static const yytype_uint16 yyrline[] =
893 {
894 0, 382, 382, 393, 402, 417, 427, 429, 433, 439,
895 445, 451, 457, 463, 469, 475, 481, 487, 493, 499,
896 505, 511, 517, 523, 530, 537, 544, 551, 558, 565,
897 571, 577, 583, 589, 595, 601, 607, 613, 619, 625,
898 631, 637, 643, 649, 655, 661, 667, 673, 679, 685,
899 691, 697, 705, 707, 709, 713, 717, 728, 730, 734,
900 736, 738, 754, 756, 760, 762, 764, 766, 768, 770,
901 772, 774, 776, 778, 780, 784, 789, 794, 799, 804,
902 809, 814, 819, 826, 831, 836, 841, 848, 853, 858,
903 863, 868, 873, 880, 885, 890, 897, 900, 903, 907,
904 909, 940, 947, 952, 969, 974, 991, 998, 1000, 1002,
905 1007, 1011, 1015, 1019, 1021, 1023, 1027, 1028, 1032, 1034,
906 1036, 1038, 1042, 1044, 1046, 1048, 1050, 1052, 1056, 1058,
907 1067, 1075, 1076, 1082, 1083, 1090, 1094, 1096, 1098, 1105,
908 1107, 1109, 1113, 1114, 1117, 1119, 1121, 1125, 1126, 1135,
909 1148, 1164, 1179, 1181, 1183, 1190, 1193, 1197, 1199, 1205,
910 1211, 1228, 1248, 1250, 1273, 1277, 1279, 1281
911 };
912 #endif
913
914 #if YYDEBUG || YYERROR_VERBOSE || YYTOKEN_TABLE
915 /* YYTNAME[SYMBOL-NUM] -- String name of the symbol SYMBOL-NUM.
916 First, the terminals, then, starting at YYNTOKENS, nonterminals. */
917 static const char *const yytname[] =
918 {
919 "$end", "error", "$undefined", "IF", "THEN", "ELSE", "ELIF", "FI",
920 "CASE", "ESAC", "FOR", "SELECT", "WHILE", "UNTIL", "DO", "DONE",
921 "FUNCTION", "COPROC", "COND_START", "COND_END", "COND_ERROR", "IN",
922 "BANG", "TIME", "TIMEOPT", "TIMEIGN", "WORD", "ASSIGNMENT_WORD",
923 "REDIR_WORD", "NUMBER", "ARITH_CMD", "ARITH_FOR_EXPRS", "COND_CMD",
924 "AND_AND", "OR_OR", "GREATER_GREATER", "LESS_LESS", "LESS_AND",
925 "LESS_LESS_LESS", "GREATER_AND", "SEMI_SEMI", "SEMI_AND",
926 "SEMI_SEMI_AND", "LESS_LESS_MINUS", "AND_GREATER", "AND_GREATER_GREATER",
927 "LESS_GREATER", "GREATER_BAR", "BAR_AND", "'&'", "';'", "'\\n'",
928 "yacc_EOF", "'|'", "'>'", "'<'", "'-'", "'{'", "'}'", "'('", "')'",
929 "$accept", "inputunit", "word_list", "redirection",
930 "simple_command_element", "redirection_list", "simple_command",
931 "command", "shell_command", "for_command", "arith_for_command",
932 "select_command", "case_command", "function_def", "function_body",
933 "subshell", "coproc", "if_command", "group_command", "arith_command",
934 "cond_command", "elif_clause", "case_clause", "pattern_list",
935 "case_clause_sequence", "pattern", "list", "compound_list", "list0",
936 "list1", "simple_list_terminator", "list_terminator", "newline_list",
937 "simple_list", "simple_list1", "pipeline_command", "pipeline",
938 "timespec", 0
939 };
940 #endif
941
942 # ifdef YYPRINT
943 /* YYTOKNUM[YYLEX-NUM] -- Internal token number corresponding to
944 token YYLEX-NUM. */
945 static const yytype_uint16 yytoknum[] =
946 {
947 0, 256, 257, 258, 259, 260, 261, 262, 263, 264,
948 265, 266, 267, 268, 269, 270, 271, 272, 273, 274,
949 275, 276, 277, 278, 279, 280, 281, 282, 283, 284,
950 285, 286, 287, 288, 289, 290, 291, 292, 293, 294,
951 295, 296, 297, 298, 299, 300, 301, 302, 303, 38,
952 59, 10, 304, 124, 62, 60, 45, 123, 125, 40,
953 41
954 };
955 # endif
956
957 /* YYR1[YYN] -- Symbol number of symbol that rule YYN derives. */
958 static const yytype_uint8 yyr1[] =
959 {
960 0, 61, 62, 62, 62, 62, 63, 63, 64, 64,
961 64, 64, 64, 64, 64, 64, 64, 64, 64, 64,
962 64, 64, 64, 64, 64, 64, 64, 64, 64, 64,
963 64, 64, 64, 64, 64, 64, 64, 64, 64, 64,
964 64, 64, 64, 64, 64, 64, 64, 64, 64, 64,
965 64, 64, 65, 65, 65, 66, 66, 67, 67, 68,
966 68, 68, 68, 68, 69, 69, 69, 69, 69, 69,
967 69, 69, 69, 69, 69, 70, 70, 70, 70, 70,
968 70, 70, 70, 71, 71, 71, 71, 72, 72, 72,
969 72, 72, 72, 73, 73, 73, 74, 74, 74, 75,
970 75, 76, 77, 77, 77, 77, 77, 78, 78, 78,
971 79, 80, 81, 82, 82, 82, 83, 83, 84, 84,
972 84, 84, 85, 85, 85, 85, 85, 85, 86, 86,
973 87, 88, 88, 89, 89, 89, 90, 90, 90, 90,
974 90, 90, 91, 91, 92, 92, 92, 93, 93, 94,
975 94, 94, 95, 95, 95, 95, 95, 96, 96, 96,
976 96, 96, 97, 97, 97, 98, 98, 98
977 };
978
979 /* YYR2[YYN] -- Number of symbols composing right hand side of rule YYN. */
980 static const yytype_uint8 yyr2[] =
981 {
982 0, 2, 2, 1, 2, 1, 1, 2, 2, 2,
983 3, 3, 3, 3, 2, 3, 3, 2, 3, 3,
984 2, 3, 3, 2, 3, 3, 2, 3, 3, 2,
985 3, 3, 2, 3, 3, 2, 3, 3, 2, 3,
986 3, 2, 3, 3, 2, 3, 3, 2, 3, 3,
987 2, 2, 1, 1, 1, 1, 2, 1, 2, 1,
988 1, 2, 1, 1, 1, 1, 5, 5, 1, 1,
989 1, 1, 1, 1, 1, 6, 6, 7, 7, 10,
990 10, 9, 9, 7, 7, 5, 5, 6, 6, 7,
991 7, 10, 10, 6, 7, 6, 5, 6, 4, 1,
992 2, 3, 2, 3, 3, 4, 2, 5, 7, 6,
993 3, 1, 3, 4, 6, 5, 1, 2, 4, 4,
994 5, 5, 2, 3, 2, 3, 2, 3, 1, 3,
995 2, 1, 2, 3, 3, 3, 4, 4, 4, 4,
996 4, 1, 1, 1, 1, 1, 1, 0, 2, 1,
997 2, 2, 4, 4, 3, 3, 1, 1, 2, 2,
998 2, 2, 4, 4, 1, 1, 2, 3
999 };
1000
1001 /* YYDEFACT[STATE-NAME] -- Default rule to reduce with in state
1002 STATE-NUM when YYTABLE doesn't specify something else to do. Zero
1003 means the default is an error. */
1004 static const yytype_uint8 yydefact[] =
1005 {
1006 0, 0, 147, 0, 0, 0, 147, 147, 0, 0,
1007 0, 0, 165, 52, 53, 0, 0, 111, 0, 0,
1008 0, 0, 0, 0, 0, 0, 0, 0, 3, 5,
1009 0, 0, 147, 147, 0, 54, 57, 59, 164, 60,
1010 64, 74, 68, 65, 62, 70, 63, 69, 71, 72,
1011 73, 0, 149, 156, 157, 0, 4, 131, 0, 0,
1012 147, 147, 0, 147, 0, 0, 147, 52, 106, 102,
1013 0, 145, 144, 146, 161, 158, 166, 0, 0, 0,
1014 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
1015 0, 0, 0, 0, 0, 0, 0, 0, 14, 23,
1016 38, 32, 47, 29, 41, 35, 44, 26, 50, 51,
1017 20, 17, 8, 9, 0, 0, 1, 52, 58, 55,
1018 61, 142, 143, 2, 147, 147, 150, 151, 147, 147,
1019 160, 159, 147, 148, 130, 132, 141, 0, 147, 0,
1020 147, 147, 147, 147, 0, 147, 147, 0, 0, 104,
1021 103, 112, 167, 147, 16, 25, 40, 34, 49, 31,
1022 43, 37, 46, 28, 22, 19, 12, 13, 15, 24,
1023 39, 33, 48, 30, 42, 36, 45, 27, 21, 18,
1024 10, 11, 110, 101, 56, 0, 0, 154, 155, 0,
1025 0, 0, 147, 147, 147, 147, 147, 147, 0, 147,
1026 0, 147, 0, 0, 0, 0, 147, 0, 147, 0,
1027 0, 147, 99, 98, 105, 0, 152, 153, 0, 0,
1028 163, 162, 147, 147, 107, 0, 0, 0, 134, 135,
1029 133, 0, 116, 147, 0, 147, 147, 0, 6, 0,
1030 147, 0, 85, 86, 147, 147, 147, 147, 0, 0,
1031 0, 0, 66, 67, 0, 100, 96, 0, 0, 109,
1032 136, 137, 138, 139, 140, 95, 122, 124, 126, 117,
1033 0, 93, 128, 0, 0, 0, 0, 75, 7, 147,
1034 0, 76, 0, 0, 0, 0, 87, 0, 147, 88,
1035 97, 108, 147, 147, 147, 147, 123, 125, 127, 94,
1036 0, 0, 147, 77, 78, 0, 147, 147, 83, 84,
1037 89, 90, 0, 113, 0, 0, 0, 147, 129, 118,
1038 119, 147, 147, 0, 0, 147, 147, 147, 115, 120,
1039 121, 0, 0, 81, 82, 0, 0, 114, 79, 80,
1040 91, 92
1041 };
1042
1043 /* YYDEFGOTO[NTERM-NUM]. */
1044 static const yytype_int16 yydefgoto[] =
1045 {
1046 -1, 34, 239, 35, 36, 120, 37, 38, 39, 40,
1047 41, 42, 43, 44, 213, 45, 46, 47, 48, 49,
1048 50, 225, 231, 232, 233, 274, 57, 58, 134, 135,
1049 123, 74, 59, 51, 187, 136, 54, 55
1050 };
1051
1052 /* YYPACT[STATE-NUM] -- Index in YYTABLE of the portion describing
1053 STATE-NUM. */
1054 #define YYPACT_NINF -208
1055 static const yytype_int16 yypact[] =
1056 {
1057 296, -35, -208, -2, 38, 10, -208, -208, 24, 546,
1058 31, 346, 51, 47, -208, 591, 604, -208, 56, 71,
1059 -18, 112, 130, 115, 128, 136, 143, 154, -208, -208,
1060 157, 170, -208, -208, 111, -208, -208, 229, -208, 578,
1061 -208, -208, -208, -208, -208, -208, -208, -208, -208, -208,
1062 -208, -12, -3, -208, 48, 346, -208, -208, 208, 396,
1063 -208, 73, 15, 163, 190, 201, 160, 107, 229, 578,
1064 204, -208, -208, -208, -208, -208, 195, 165, 202, 215,
1065 152, 216, 153, 222, 227, 236, 237, 244, 245, 253,
1066 158, 254, 171, 255, 256, 259, 261, 262, -208, -208,
1067 -208, -208, -208, -208, -208, -208, -208, -208, -208, -208,
1068 -208, -208, -208, -208, 231, 230, -208, -208, -208, -208,
1069 578, -208, -208, -208, -208, -208, 446, 446, -208, -208,
1070 -208, -208, -208, -208, -208, 210, -208, 4, -208, 65,
1071 -208, -208, -208, -208, 70, -208, -208, 232, 41, 578,
1072 578, -208, -208, -208, -208, -208, -208, -208, -208, -208,
1073 -208, -208, -208, -208, -208, -208, -208, -208, -208, -208,
1074 -208, -208, -208, -208, -208, -208, -208, -208, -208, -208,
1075 -208, -208, -208, -208, -208, 396, 396, 23, 23, 496,
1076 496, 97, -208, -208, -208, -208, -208, -208, 85, -208,
1077 185, -208, 276, 235, 100, 110, -208, 268, -208, 280,
1078 283, -208, 578, -208, 578, 41, -208, -208, 446, 446,
1079 48, 48, -208, -208, -208, 295, 396, 396, 396, 396,
1080 396, 294, 161, -208, 19, -208, -208, 290, -208, 200,
1081 -208, 252, -208, -208, -208, -208, -208, -208, 302, 396,
1082 200, 269, -208, -208, 41, 578, -208, 313, 324, -208,
1083 -208, -208, 55, 55, 55, -208, -208, -208, -208, 192,
1084 34, -208, -208, 303, -19, 315, 278, -208, -208, -208,
1085 114, -208, 322, 286, 323, 287, -208, 210, -208, -208,
1086 -208, -208, -208, -208, -208, -208, -208, -208, -208, -208,
1087 8, 320, -208, -208, -208, 117, -208, -208, -208, -208,
1088 -208, -208, 119, 167, 396, 396, 396, -208, -208, -208,
1089 396, -208, -208, 337, 307, -208, -208, -208, -208, -208,
1090 396, 345, 308, -208, -208, 352, 312, -208, -208, -208,
1091 -208, -208
1092 };
1093
1094 /* YYPGOTO[NTERM-NUM]. */
1095 static const yytype_int16 yypgoto[] =
1096 {
1097 -208, -208, 164, -37, -31, -62, 368, -208, -5, -208,
1098 -208, -208, -208, -208, -206, -208, -208, -208, -208, -208,
1099 -208, 66, -208, 145, -208, 88, -173, -6, -208, -207,
1100 -208, -45, -48, -208, 5, 3, 17, -208
1101 };
1102
1103 /* YYTABLE[YYPACT[STATE-NUM]]. What to do in state STATE-NUM. If
1104 positive, shift that token. If negative, reduce the rule which
1105 number is the opposite. If zero, do what YYDEFACT says.
1106 If YYTABLE_NINF, syntax error. */
1107 #define YYTABLE_NINF -1
1108 static const yytype_uint16 yytable[] =
1109 {
1110 64, 65, 119, 53, 69, 52, 118, 150, 100, 256,
1111 130, 101, 137, 139, 75, 144, 56, 142, 148, 260,
1112 261, 262, 263, 264, 60, 197, 114, 115, 271, 140,
1113 124, 125, 119, 248, 301, 251, 63, 118, 102, 121,
1114 122, 302, 287, 299, 2, 272, 126, 127, 290, 3,
1115 66, 4, 5, 6, 7, 133, 124, 125, 131, 10,
1116 272, 301, 149, 70, 61, 71, 72, 73, 317, 62,
1117 133, 17, 141, 284, 285, 76, 185, 186, 273, 199,
1118 189, 190, 98, 184, 206, 133, 200, 214, 192, 193,
1119 198, 207, 133, 273, 204, 205, 128, 99, 32, 235,
1120 33, 129, 222, 223, 224, 215, 77, 262, 263, 264,
1121 2, 116, 119, 184, 244, 3, 133, 4, 5, 6,
1122 7, 133, 201, 138, 246, 10, 191, 208, 306, 53,
1123 53, 321, 188, 325, 202, 203, 133, 17, 103, 209,
1124 210, 107, 236, 212, 226, 227, 228, 229, 230, 234,
1125 255, 133, 335, 336, 108, 240, 104, 245, 249, 105,
1126 249, 133, 109, 254, 32, 133, 33, 247, 133, 110,
1127 133, 307, 327, 223, 322, 119, 326, 184, 156, 160,
1128 111, 157, 161, 112, 170, 270, 106, 171, 53, 53,
1129 216, 217, 280, 237, 279, 241, 113, 174, 249, 249,
1130 175, 266, 267, 268, 145, 288, 220, 221, 158, 162,
1131 212, 238, 132, 143, 172, 146, 257, 258, 184, 147,
1132 152, 53, 53, 151, 188, 153, 278, 176, 154, 275,
1133 276, 305, 296, 297, 298, 71, 72, 73, 282, 283,
1134 312, 155, 159, 192, 193, 314, 315, 316, 163, 212,
1135 71, 72, 73, 164, 320, 117, 14, 15, 16, 194,
1136 195, 196, 165, 166, 18, 19, 20, 21, 22, 330,
1137 167, 168, 23, 24, 25, 26, 27, 249, 249, 169,
1138 173, 177, 178, 30, 31, 179, 313, 180, 181, 182,
1139 183, 242, 211, 243, 238, 252, 319, 1, 253, 2,
1140 323, 324, 259, 265, 3, 277, 4, 5, 6, 7,
1141 281, 329, 8, 9, 10, 331, 332, 286, 11, 12,
1142 291, 337, 13, 14, 15, 16, 17, 289, 292, 272,
1143 303, 18, 19, 20, 21, 22, 304, 308, 310, 23,
1144 24, 25, 26, 27, 309, 311, 318, 28, 29, 2,
1145 30, 31, 333, 32, 3, 33, 4, 5, 6, 7,
1146 338, 300, 8, 9, 10, 334, 339, 340, 11, 12,
1147 341, 250, 13, 14, 15, 16, 17, 68, 269, 328,
1148 0, 18, 19, 20, 21, 22, 0, 0, 0, 23,
1149 24, 25, 26, 27, 0, 0, 71, 72, 73, 2,
1150 30, 31, 0, 32, 3, 33, 4, 5, 6, 7,
1151 0, 0, 8, 9, 10, 0, 0, 0, 11, 12,
1152 0, 0, 13, 14, 15, 16, 17, 0, 0, 0,
1153 0, 18, 19, 20, 21, 22, 0, 0, 0, 23,
1154 24, 25, 26, 27, 0, 0, 0, 133, 0, 2,
1155 30, 31, 0, 32, 3, 33, 4, 5, 6, 7,
1156 0, 0, 8, 9, 10, 0, 0, 0, 11, 12,
1157 0, 0, 13, 14, 15, 16, 17, 0, 0, 0,
1158 0, 18, 19, 20, 21, 22, 0, 0, 0, 23,
1159 24, 25, 26, 27, 0, 0, 0, 0, 0, 2,
1160 30, 31, 0, 32, 3, 33, 4, 5, 6, 7,
1161 0, 0, 8, 9, 10, 0, 0, 0, 0, 0,
1162 0, 0, 13, 14, 15, 16, 17, 0, 0, 0,
1163 0, 18, 19, 20, 21, 22, 0, 0, 0, 23,
1164 24, 25, 26, 27, 0, 0, 0, 133, 0, 2,
1165 30, 31, 0, 32, 3, 33, 4, 5, 6, 7,
1166 0, 0, 0, 0, 10, 0, 0, 0, 0, 0,
1167 0, 0, 67, 14, 15, 16, 17, 0, 0, 0,
1168 0, 18, 19, 20, 21, 22, 0, 0, 0, 23,
1169 24, 25, 26, 27, 0, 0, 0, 0, 0, 0,
1170 30, 31, 0, 32, 0, 33, 15, 16, 0, 0,
1171 0, 0, 0, 18, 19, 20, 21, 22, 0, 0,
1172 0, 23, 24, 25, 26, 27, 78, 79, 80, 81,
1173 82, 0, 30, 31, 83, 0, 0, 84, 85, 88,
1174 89, 90, 91, 92, 0, 86, 87, 93, 0, 0,
1175 94, 95, 0, 0, 0, 0, 0, 0, 96, 97
1176 };
1177
1178 static const yytype_int16 yycheck[] =
1179 {
1180 6, 7, 39, 0, 9, 0, 37, 69, 26, 215,
1181 55, 29, 60, 61, 11, 63, 51, 62, 66, 226,
1182 227, 228, 229, 230, 26, 21, 32, 33, 9, 14,
1183 33, 34, 69, 206, 53, 208, 26, 68, 56, 51,
1184 52, 60, 249, 9, 3, 26, 49, 50, 254, 8,
1185 26, 10, 11, 12, 13, 51, 33, 34, 55, 18,
1186 26, 53, 67, 32, 26, 50, 51, 52, 60, 31,
1187 51, 30, 57, 246, 247, 24, 124, 125, 59, 14,
1188 128, 129, 26, 120, 14, 51, 21, 149, 33, 34,
1189 138, 21, 51, 59, 142, 143, 48, 26, 57, 14,
1190 59, 53, 5, 6, 7, 153, 59, 314, 315, 316,
1191 3, 0, 149, 150, 14, 8, 51, 10, 11, 12,
1192 13, 51, 57, 50, 14, 18, 132, 57, 14, 126,
1193 127, 14, 127, 14, 140, 141, 51, 30, 26, 145,
1194 146, 26, 57, 148, 192, 193, 194, 195, 196, 197,
1195 212, 51, 325, 326, 26, 200, 26, 57, 206, 29,
1196 208, 51, 26, 211, 57, 51, 59, 57, 51, 26,
1197 51, 57, 5, 6, 57, 212, 57, 214, 26, 26,
1198 26, 29, 29, 26, 26, 233, 56, 29, 185, 186,
1199 185, 186, 240, 199, 239, 201, 26, 26, 246, 247,
1200 29, 40, 41, 42, 14, 250, 189, 190, 56, 56,
1201 215, 26, 4, 50, 56, 14, 222, 223, 255, 59,
1202 25, 218, 219, 19, 219, 60, 26, 56, 26, 235,
1203 236, 279, 40, 41, 42, 50, 51, 52, 244, 245,
1204 288, 26, 26, 33, 34, 293, 294, 295, 26, 254,
1205 50, 51, 52, 26, 302, 26, 27, 28, 29, 49,
1206 50, 51, 26, 26, 35, 36, 37, 38, 39, 317,
1207 26, 26, 43, 44, 45, 46, 47, 325, 326, 26,
1208 26, 26, 26, 54, 55, 26, 292, 26, 26, 58,
1209 60, 15, 60, 58, 26, 15, 302, 1, 15, 3,
1210 306, 307, 7, 9, 8, 15, 10, 11, 12, 13,
1211 58, 317, 16, 17, 18, 321, 322, 15, 22, 23,
1212 7, 327, 26, 27, 28, 29, 30, 58, 4, 26,
1213 15, 35, 36, 37, 38, 39, 58, 15, 15, 43,
1214 44, 45, 46, 47, 58, 58, 26, 51, 52, 3,
1215 54, 55, 15, 57, 8, 59, 10, 11, 12, 13,
1216 15, 273, 16, 17, 18, 58, 58, 15, 22, 23,
1217 58, 207, 26, 27, 28, 29, 30, 9, 233, 313,
1218 -1, 35, 36, 37, 38, 39, -1, -1, -1, 43,
1219 44, 45, 46, 47, -1, -1, 50, 51, 52, 3,
1220 54, 55, -1, 57, 8, 59, 10, 11, 12, 13,
1221 -1, -1, 16, 17, 18, -1, -1, -1, 22, 23,
1222 -1, -1, 26, 27, 28, 29, 30, -1, -1, -1,
1223 -1, 35, 36, 37, 38, 39, -1, -1, -1, 43,
1224 44, 45, 46, 47, -1, -1, -1, 51, -1, 3,
1225 54, 55, -1, 57, 8, 59, 10, 11, 12, 13,
1226 -1, -1, 16, 17, 18, -1, -1, -1, 22, 23,
1227 -1, -1, 26, 27, 28, 29, 30, -1, -1, -1,
1228 -1, 35, 36, 37, 38, 39, -1, -1, -1, 43,
1229 44, 45, 46, 47, -1, -1, -1, -1, -1, 3,
1230 54, 55, -1, 57, 8, 59, 10, 11, 12, 13,
1231 -1, -1, 16, 17, 18, -1, -1, -1, -1, -1,
1232 -1, -1, 26, 27, 28, 29, 30, -1, -1, -1,
1233 -1, 35, 36, 37, 38, 39, -1, -1, -1, 43,
1234 44, 45, 46, 47, -1, -1, -1, 51, -1, 3,
1235 54, 55, -1, 57, 8, 59, 10, 11, 12, 13,
1236 -1, -1, -1, -1, 18, -1, -1, -1, -1, -1,
1237 -1, -1, 26, 27, 28, 29, 30, -1, -1, -1,
1238 -1, 35, 36, 37, 38, 39, -1, -1, -1, 43,
1239 44, 45, 46, 47, -1, -1, -1, -1, -1, -1,
1240 54, 55, -1, 57, -1, 59, 28, 29, -1, -1,
1241 -1, -1, -1, 35, 36, 37, 38, 39, -1, -1,
1242 -1, 43, 44, 45, 46, 47, 35, 36, 37, 38,
1243 39, -1, 54, 55, 43, -1, -1, 46, 47, 35,
1244 36, 37, 38, 39, -1, 54, 55, 43, -1, -1,
1245 46, 47, -1, -1, -1, -1, -1, -1, 54, 55
1246 };
1247
1248 /* YYSTOS[STATE-NUM] -- The (internal number of the) accessing
1249 symbol of state STATE-NUM. */
1250 static const yytype_uint8 yystos[] =
1251 {
1252 0, 1, 3, 8, 10, 11, 12, 13, 16, 17,
1253 18, 22, 23, 26, 27, 28, 29, 30, 35, 36,
1254 37, 38, 39, 43, 44, 45, 46, 47, 51, 52,
1255 54, 55, 57, 59, 62, 64, 65, 67, 68, 69,
1256 70, 71, 72, 73, 74, 76, 77, 78, 79, 80,
1257 81, 94, 95, 96, 97, 98, 51, 87, 88, 93,
1258 26, 26, 31, 26, 88, 88, 26, 26, 67, 69,
1259 32, 50, 51, 52, 92, 96, 24, 59, 35, 36,
1260 37, 38, 39, 43, 46, 47, 54, 55, 35, 36,
1261 37, 38, 39, 43, 46, 47, 54, 55, 26, 26,
1262 26, 29, 56, 26, 26, 29, 56, 26, 26, 26,
1263 26, 26, 26, 26, 88, 88, 0, 26, 65, 64,
1264 66, 51, 52, 91, 33, 34, 49, 50, 48, 53,
1265 92, 96, 4, 51, 89, 90, 96, 93, 50, 93,
1266 14, 57, 92, 50, 93, 14, 14, 59, 93, 69,
1267 66, 19, 25, 60, 26, 26, 26, 29, 56, 26,
1268 26, 29, 56, 26, 26, 26, 26, 26, 26, 26,
1269 26, 29, 56, 26, 26, 29, 56, 26, 26, 26,
1270 26, 26, 58, 60, 64, 93, 93, 95, 95, 93,
1271 93, 88, 33, 34, 49, 50, 51, 21, 93, 14,
1272 21, 57, 88, 88, 93, 93, 14, 21, 57, 88,
1273 88, 60, 69, 75, 66, 93, 95, 95, 49, 50,
1274 97, 97, 5, 6, 7, 82, 93, 93, 93, 93,
1275 93, 83, 84, 85, 93, 14, 57, 88, 26, 63,
1276 92, 88, 15, 58, 14, 57, 14, 57, 87, 93,
1277 63, 87, 15, 15, 93, 66, 75, 88, 88, 7,
1278 90, 90, 90, 90, 90, 9, 40, 41, 42, 84,
1279 93, 9, 26, 59, 86, 88, 88, 15, 26, 92,
1280 93, 58, 88, 88, 87, 87, 15, 90, 92, 58,
1281 75, 7, 4, 49, 50, 51, 40, 41, 42, 9,
1282 86, 53, 60, 15, 58, 93, 14, 57, 15, 58,
1283 15, 58, 93, 88, 93, 93, 93, 60, 26, 88,
1284 93, 14, 57, 88, 88, 14, 57, 5, 82, 88,
1285 93, 88, 88, 15, 58, 87, 87, 88, 15, 58,
1286 15, 58
1287 };
1288
1289 #define yyerrok (yyerrstatus = 0)
1290 #define yyclearin (yychar = YYEMPTY)
1291 #define YYEMPTY (-2)
1292 #define YYEOF 0
1293
1294 #define YYACCEPT goto yyacceptlab
1295 #define YYABORT goto yyabortlab
1296 #define YYERROR goto yyerrorlab
1297
1298
1299 /* Like YYERROR except do call yyerror. This remains here temporarily
1300 to ease the transition to the new meaning of YYERROR, for GCC.
1301 Once GCC version 2 has supplanted version 1, this can go. */
1302
1303 #define YYFAIL goto yyerrlab
1304
1305 #define YYRECOVERING() (!!yyerrstatus)
1306
1307 #define YYBACKUP(Token, Value) \
1308 do \
1309 if (yychar == YYEMPTY && yylen == 1) \
1310 { \
1311 yychar = (Token); \
1312 yylval = (Value); \
1313 yytoken = YYTRANSLATE (yychar); \
1314 YYPOPSTACK (1); \
1315 goto yybackup; \
1316 } \
1317 else \
1318 { \
1319 yyerror (YY_("syntax error: cannot back up")); \
1320 YYERROR; \
1321 } \
1322 while (YYID (0))
1323
1324
1325 #define YYTERROR 1
1326 #define YYERRCODE 256
1327
1328
1329 /* YYLLOC_DEFAULT -- Set CURRENT to span from RHS[1] to RHS[N].
1330 If N is 0, then set CURRENT to the empty location which ends
1331 the previous symbol: RHS[0] (always defined). */
1332
1333 #define YYRHSLOC(Rhs, K) ((Rhs)[K])
1334 #ifndef YYLLOC_DEFAULT
1335 # define YYLLOC_DEFAULT(Current, Rhs, N) \
1336 do \
1337 if (YYID (N)) \
1338 { \
1339 (Current).first_line = YYRHSLOC (Rhs, 1).first_line; \
1340 (Current).first_column = YYRHSLOC (Rhs, 1).first_column; \
1341 (Current).last_line = YYRHSLOC (Rhs, N).last_line; \
1342 (Current).last_column = YYRHSLOC (Rhs, N).last_column; \
1343 } \
1344 else \
1345 { \
1346 (Current).first_line = (Current).last_line = \
1347 YYRHSLOC (Rhs, 0).last_line; \
1348 (Current).first_column = (Current).last_column = \
1349 YYRHSLOC (Rhs, 0).last_column; \
1350 } \
1351 while (YYID (0))
1352 #endif
1353
1354
1355 /* YY_LOCATION_PRINT -- Print the location on the stream.
1356 This macro was not mandated originally: define only if we know
1357 we won't break user code: when these are the locations we know. */
1358
1359 #ifndef YY_LOCATION_PRINT
1360 # if defined YYLTYPE_IS_TRIVIAL && YYLTYPE_IS_TRIVIAL
1361 # define YY_LOCATION_PRINT(File, Loc) \
1362 fprintf (File, "%d.%d-%d.%d", \
1363 (Loc).first_line, (Loc).first_column, \
1364 (Loc).last_line, (Loc).last_column)
1365 # else
1366 # define YY_LOCATION_PRINT(File, Loc) ((void) 0)
1367 # endif
1368 #endif
1369
1370
1371 /* YYLEX -- calling `yylex' with the right arguments. */
1372
1373 #ifdef YYLEX_PARAM
1374 # define YYLEX yylex (YYLEX_PARAM)
1375 #else
1376 # define YYLEX yylex ()
1377 #endif
1378
1379 /* Enable debugging if requested. */
1380 #if YYDEBUG
1381
1382 # ifndef YYFPRINTF
1383 # include <stdio.h> /* INFRINGES ON USER NAME SPACE */
1384 # define YYFPRINTF fprintf
1385 # endif
1386
1387 # define YYDPRINTF(Args) \
1388 do { \
1389 if (yydebug) \
1390 YYFPRINTF Args; \
1391 } while (YYID (0))
1392
1393 # define YY_SYMBOL_PRINT(Title, Type, Value, Location) \
1394 do { \
1395 if (yydebug) \
1396 { \
1397 YYFPRINTF (stderr, "%s ", Title); \
1398 yy_symbol_print (stderr, \
1399 Type, Value); \
1400 YYFPRINTF (stderr, "\n"); \
1401 } \
1402 } while (YYID (0))
1403
1404
1405 /*--------------------------------.
1406 | Print this symbol on YYOUTPUT. |
1407 `--------------------------------*/
1408
1409 /*ARGSUSED*/
1410 #if (defined __STDC__ || defined __C99__FUNC__ \
1411 || defined __cplusplus || defined _MSC_VER)
1412 static void
1413 yy_symbol_value_print (FILE *yyoutput, int yytype, YYSTYPE const * const yyvaluep)
1414 #else
1415 static void
1416 yy_symbol_value_print (yyoutput, yytype, yyvaluep)
1417 FILE *yyoutput;
1418 int yytype;
1419 YYSTYPE const * const yyvaluep;
1420 #endif
1421 {
1422 if (!yyvaluep)
1423 return;
1424 # ifdef YYPRINT
1425 if (yytype < YYNTOKENS)
1426 YYPRINT (yyoutput, yytoknum[yytype], *yyvaluep);
1427 # else
1428 YYUSE (yyoutput);
1429 # endif
1430 switch (yytype)
1431 {
1432 default:
1433 break;
1434 }
1435 }
1436
1437
1438 /*--------------------------------.
1439 | Print this symbol on YYOUTPUT. |
1440 `--------------------------------*/
1441
1442 #if (defined __STDC__ || defined __C99__FUNC__ \
1443 || defined __cplusplus || defined _MSC_VER)
1444 static void
1445 yy_symbol_print (FILE *yyoutput, int yytype, YYSTYPE const * const yyvaluep)
1446 #else
1447 static void
1448 yy_symbol_print (yyoutput, yytype, yyvaluep)
1449 FILE *yyoutput;
1450 int yytype;
1451 YYSTYPE const * const yyvaluep;
1452 #endif
1453 {
1454 if (yytype < YYNTOKENS)
1455 YYFPRINTF (yyoutput, "token %s (", yytname[yytype]);
1456 else
1457 YYFPRINTF (yyoutput, "nterm %s (", yytname[yytype]);
1458
1459 yy_symbol_value_print (yyoutput, yytype, yyvaluep);
1460 YYFPRINTF (yyoutput, ")");
1461 }
1462
1463 /*------------------------------------------------------------------.
1464 | yy_stack_print -- Print the state stack from its BOTTOM up to its |
1465 | TOP (included). |
1466 `------------------------------------------------------------------*/
1467
1468 #if (defined __STDC__ || defined __C99__FUNC__ \
1469 || defined __cplusplus || defined _MSC_VER)
1470 static void
1471 yy_stack_print (yytype_int16 *bottom, yytype_int16 *top)
1472 #else
1473 static void
1474 yy_stack_print (bottom, top)
1475 yytype_int16 *bottom;
1476 yytype_int16 *top;
1477 #endif
1478 {
1479 YYFPRINTF (stderr, "Stack now");
1480 for (; bottom <= top; ++bottom)
1481 YYFPRINTF (stderr, " %d", *bottom);
1482 YYFPRINTF (stderr, "\n");
1483 }
1484
1485 # define YY_STACK_PRINT(Bottom, Top) \
1486 do { \
1487 if (yydebug) \
1488 yy_stack_print ((Bottom), (Top)); \
1489 } while (YYID (0))
1490
1491
1492 /*------------------------------------------------.
1493 | Report that the YYRULE is going to be reduced. |
1494 `------------------------------------------------*/
1495
1496 #if (defined __STDC__ || defined __C99__FUNC__ \
1497 || defined __cplusplus || defined _MSC_VER)
1498 static void
1499 yy_reduce_print (YYSTYPE *yyvsp, int yyrule)
1500 #else
1501 static void
1502 yy_reduce_print (yyvsp, yyrule)
1503 YYSTYPE *yyvsp;
1504 int yyrule;
1505 #endif
1506 {
1507 int yynrhs = yyr2[yyrule];
1508 int yyi;
1509 unsigned long int yylno = yyrline[yyrule];
1510 YYFPRINTF (stderr, "Reducing stack by rule %d (line %lu):\n",
1511 yyrule - 1, yylno);
1512 /* The symbols being reduced. */
1513 for (yyi = 0; yyi < yynrhs; yyi++)
1514 {
1515 fprintf (stderr, " $%d = ", yyi + 1);
1516 yy_symbol_print (stderr, yyrhs[yyprhs[yyrule] + yyi],
1517 &(yyvsp[(yyi + 1) - (yynrhs)])
1518 );
1519 fprintf (stderr, "\n");
1520 }
1521 }
1522
1523 # define YY_REDUCE_PRINT(Rule) \
1524 do { \
1525 if (yydebug) \
1526 yy_reduce_print (yyvsp, Rule); \
1527 } while (YYID (0))
1528
1529 /* Nonzero means print parse trace. It is left uninitialized so that
1530 multiple parsers can coexist. */
1531 int yydebug;
1532 #else /* !YYDEBUG */
1533 # define YYDPRINTF(Args)
1534 # define YY_SYMBOL_PRINT(Title, Type, Value, Location)
1535 # define YY_STACK_PRINT(Bottom, Top)
1536 # define YY_REDUCE_PRINT(Rule)
1537 #endif /* !YYDEBUG */
1538
1539
1540 /* YYINITDEPTH -- initial size of the parser's stacks. */
1541 #ifndef YYINITDEPTH
1542 # define YYINITDEPTH 200
1543 #endif
1544
1545 /* YYMAXDEPTH -- maximum size the stacks can grow to (effective only
1546 if the built-in stack extension method is used).
1547
1548 Do not make this value too large; the results are undefined if
1549 YYSTACK_ALLOC_MAXIMUM < YYSTACK_BYTES (YYMAXDEPTH)
1550 evaluated with infinite-precision integer arithmetic. */
1551
1552 #ifndef YYMAXDEPTH
1553 # define YYMAXDEPTH 10000
1554 #endif
1555
1556 \f
1557
1558 #if YYERROR_VERBOSE
1559
1560 # ifndef yystrlen
1561 # if defined __GLIBC__ && defined _STRING_H
1562 # define yystrlen strlen
1563 # else
1564 /* Return the length of YYSTR. */
1565 #if (defined __STDC__ || defined __C99__FUNC__ \
1566 || defined __cplusplus || defined _MSC_VER)
1567 static YYSIZE_T
1568 yystrlen (const char *yystr)
1569 #else
1570 static YYSIZE_T
1571 yystrlen (yystr)
1572 const char *yystr;
1573 #endif
1574 {
1575 YYSIZE_T yylen;
1576 for (yylen = 0; yystr[yylen]; yylen++)
1577 continue;
1578 return yylen;
1579 }
1580 # endif
1581 # endif
1582
1583 # ifndef yystpcpy
1584 # if defined __GLIBC__ && defined _STRING_H && defined _GNU_SOURCE
1585 # define yystpcpy stpcpy
1586 # else
1587 /* Copy YYSRC to YYDEST, returning the address of the terminating '\0' in
1588 YYDEST. */
1589 #if (defined __STDC__ || defined __C99__FUNC__ \
1590 || defined __cplusplus || defined _MSC_VER)
1591 static char *
1592 yystpcpy (char *yydest, const char *yysrc)
1593 #else
1594 static char *
1595 yystpcpy (yydest, yysrc)
1596 char *yydest;
1597 const char *yysrc;
1598 #endif
1599 {
1600 char *yyd = yydest;
1601 const char *yys = yysrc;
1602
1603 while ((*yyd++ = *yys++) != '\0')
1604 continue;
1605
1606 return yyd - 1;
1607 }
1608 # endif
1609 # endif
1610
1611 # ifndef yytnamerr
1612 /* Copy to YYRES the contents of YYSTR after stripping away unnecessary
1613 quotes and backslashes, so that it's suitable for yyerror. The
1614 heuristic is that double-quoting is unnecessary unless the string
1615 contains an apostrophe, a comma, or backslash (other than
1616 backslash-backslash). YYSTR is taken from yytname. If YYRES is
1617 null, do not copy; instead, return the length of what the result
1618 would have been. */
1619 static YYSIZE_T
1620 yytnamerr (char *yyres, const char *yystr)
1621 {
1622 if (*yystr == '"')
1623 {
1624 YYSIZE_T yyn = 0;
1625 char const *yyp = yystr;
1626
1627 for (;;)
1628 switch (*++yyp)
1629 {
1630 case '\'':
1631 case ',':
1632 goto do_not_strip_quotes;
1633
1634 case '\\':
1635 if (*++yyp != '\\')
1636 goto do_not_strip_quotes;
1637 /* Fall through. */
1638 default:
1639 if (yyres)
1640 yyres[yyn] = *yyp;
1641 yyn++;
1642 break;
1643
1644 case '"':
1645 if (yyres)
1646 yyres[yyn] = '\0';
1647 return yyn;
1648 }
1649 do_not_strip_quotes: ;
1650 }
1651
1652 if (! yyres)
1653 return yystrlen (yystr);
1654
1655 return yystpcpy (yyres, yystr) - yyres;
1656 }
1657 # endif
1658
1659 /* Copy into YYRESULT an error message about the unexpected token
1660 YYCHAR while in state YYSTATE. Return the number of bytes copied,
1661 including the terminating null byte. If YYRESULT is null, do not
1662 copy anything; just return the number of bytes that would be
1663 copied. As a special case, return 0 if an ordinary "syntax error"
1664 message will do. Return YYSIZE_MAXIMUM if overflow occurs during
1665 size calculation. */
1666 static YYSIZE_T
1667 yysyntax_error (char *yyresult, int yystate, int yychar)
1668 {
1669 int yyn = yypact[yystate];
1670
1671 if (! (YYPACT_NINF < yyn && yyn <= YYLAST))
1672 return 0;
1673 else
1674 {
1675 int yytype = YYTRANSLATE (yychar);
1676 YYSIZE_T yysize0 = yytnamerr (0, yytname[yytype]);
1677 YYSIZE_T yysize = yysize0;
1678 YYSIZE_T yysize1;
1679 int yysize_overflow = 0;
1680 enum { YYERROR_VERBOSE_ARGS_MAXIMUM = 5 };
1681 char const *yyarg[YYERROR_VERBOSE_ARGS_MAXIMUM];
1682 int yyx;
1683
1684 # if 0
1685 /* This is so xgettext sees the translatable formats that are
1686 constructed on the fly. */
1687 YY_("syntax error, unexpected %s");
1688 YY_("syntax error, unexpected %s, expecting %s");
1689 YY_("syntax error, unexpected %s, expecting %s or %s");
1690 YY_("syntax error, unexpected %s, expecting %s or %s or %s");
1691 YY_("syntax error, unexpected %s, expecting %s or %s or %s or %s");
1692 # endif
1693 char *yyfmt;
1694 char const *yyf;
1695 static char const yyunexpected[] = "syntax error, unexpected %s";
1696 static char const yyexpecting[] = ", expecting %s";
1697 static char const yyor[] = " or %s";
1698 char yyformat[sizeof yyunexpected
1699 + sizeof yyexpecting - 1
1700 + ((YYERROR_VERBOSE_ARGS_MAXIMUM - 2)
1701 * (sizeof yyor - 1))];
1702 char const *yyprefix = yyexpecting;
1703
1704 /* Start YYX at -YYN if negative to avoid negative indexes in
1705 YYCHECK. */
1706 int yyxbegin = yyn < 0 ? -yyn : 0;
1707
1708 /* Stay within bounds of both yycheck and yytname. */
1709 int yychecklim = YYLAST - yyn + 1;
1710 int yyxend = yychecklim < YYNTOKENS ? yychecklim : YYNTOKENS;
1711 int yycount = 1;
1712
1713 yyarg[0] = yytname[yytype];
1714 yyfmt = yystpcpy (yyformat, yyunexpected);
1715
1716 for (yyx = yyxbegin; yyx < yyxend; ++yyx)
1717 if (yycheck[yyx + yyn] == yyx && yyx != YYTERROR)
1718 {
1719 if (yycount == YYERROR_VERBOSE_ARGS_MAXIMUM)
1720 {
1721 yycount = 1;
1722 yysize = yysize0;
1723 yyformat[sizeof yyunexpected - 1] = '\0';
1724 break;
1725 }
1726 yyarg[yycount++] = yytname[yyx];
1727 yysize1 = yysize + yytnamerr (0, yytname[yyx]);
1728 yysize_overflow |= (yysize1 < yysize);
1729 yysize = yysize1;
1730 yyfmt = yystpcpy (yyfmt, yyprefix);
1731 yyprefix = yyor;
1732 }
1733
1734 yyf = YY_(yyformat);
1735 yysize1 = yysize + yystrlen (yyf);
1736 yysize_overflow |= (yysize1 < yysize);
1737 yysize = yysize1;
1738
1739 if (yysize_overflow)
1740 return YYSIZE_MAXIMUM;
1741
1742 if (yyresult)
1743 {
1744 /* Avoid sprintf, as that infringes on the user's name space.
1745 Don't have undefined behavior even if the translation
1746 produced a string with the wrong number of "%s"s. */
1747 char *yyp = yyresult;
1748 int yyi = 0;
1749 while ((*yyp = *yyf) != '\0')
1750 {
1751 if (*yyp == '%' && yyf[1] == 's' && yyi < yycount)
1752 {
1753 yyp += yytnamerr (yyp, yyarg[yyi++]);
1754 yyf += 2;
1755 }
1756 else
1757 {
1758 yyp++;
1759 yyf++;
1760 }
1761 }
1762 }
1763 return yysize;
1764 }
1765 }
1766 #endif /* YYERROR_VERBOSE */
1767 \f
1768
1769 /*-----------------------------------------------.
1770 | Release the memory associated to this symbol. |
1771 `-----------------------------------------------*/
1772
1773 /*ARGSUSED*/
1774 #if (defined __STDC__ || defined __C99__FUNC__ \
1775 || defined __cplusplus || defined _MSC_VER)
1776 static void
1777 yydestruct (const char *yymsg, int yytype, YYSTYPE *yyvaluep)
1778 #else
1779 static void
1780 yydestruct (yymsg, yytype, yyvaluep)
1781 const char *yymsg;
1782 int yytype;
1783 YYSTYPE *yyvaluep;
1784 #endif
1785 {
1786 YYUSE (yyvaluep);
1787
1788 if (!yymsg)
1789 yymsg = "Deleting";
1790 YY_SYMBOL_PRINT (yymsg, yytype, yyvaluep, yylocationp);
1791
1792 switch (yytype)
1793 {
1794
1795 default:
1796 break;
1797 }
1798 }
1799 \f
1800
1801 /* Prevent warnings from -Wmissing-prototypes. */
1802
1803 #ifdef YYPARSE_PARAM
1804 #if defined __STDC__ || defined __cplusplus
1805 int yyparse (void *YYPARSE_PARAM);
1806 #else
1807 int yyparse ();
1808 #endif
1809 #else /* ! YYPARSE_PARAM */
1810 #if defined __STDC__ || defined __cplusplus
1811 int yyparse (void);
1812 #else
1813 int yyparse ();
1814 #endif
1815 #endif /* ! YYPARSE_PARAM */
1816
1817
1818
1819 /* The look-ahead symbol. */
1820 int yychar;
1821
1822 /* The semantic value of the look-ahead symbol. */
1823 YYSTYPE yylval;
1824
1825 /* Number of syntax errors so far. */
1826 int yynerrs;
1827
1828
1829
1830 /*----------.
1831 | yyparse. |
1832 `----------*/
1833
1834 #ifdef YYPARSE_PARAM
1835 #if (defined __STDC__ || defined __C99__FUNC__ \
1836 || defined __cplusplus || defined _MSC_VER)
1837 int
1838 yyparse (void *YYPARSE_PARAM)
1839 #else
1840 int
1841 yyparse (YYPARSE_PARAM)
1842 void *YYPARSE_PARAM;
1843 #endif
1844 #else /* ! YYPARSE_PARAM */
1845 #if (defined __STDC__ || defined __C99__FUNC__ \
1846 || defined __cplusplus || defined _MSC_VER)
1847 int
1848 yyparse (void)
1849 #else
1850 int
1851 yyparse ()
1852
1853 #endif
1854 #endif
1855 {
1856
1857 int yystate;
1858 int yyn;
1859 int yyresult;
1860 /* Number of tokens to shift before error messages enabled. */
1861 int yyerrstatus;
1862 /* Look-ahead token as an internal (translated) token number. */
1863 int yytoken = 0;
1864 #if YYERROR_VERBOSE
1865 /* Buffer for error messages, and its allocated size. */
1866 char yymsgbuf[128];
1867 char *yymsg = yymsgbuf;
1868 YYSIZE_T yymsg_alloc = sizeof yymsgbuf;
1869 #endif
1870
1871 /* Three stacks and their tools:
1872 `yyss': related to states,
1873 `yyvs': related to semantic values,
1874 `yyls': related to locations.
1875
1876 Refer to the stacks thru separate pointers, to allow yyoverflow
1877 to reallocate them elsewhere. */
1878
1879 /* The state stack. */
1880 yytype_int16 yyssa[YYINITDEPTH];
1881 yytype_int16 *yyss = yyssa;
1882 yytype_int16 *yyssp;
1883
1884 /* The semantic value stack. */
1885 YYSTYPE yyvsa[YYINITDEPTH];
1886 YYSTYPE *yyvs = yyvsa;
1887 YYSTYPE *yyvsp;
1888
1889
1890
1891 #define YYPOPSTACK(N) (yyvsp -= (N), yyssp -= (N))
1892
1893 YYSIZE_T yystacksize = YYINITDEPTH;
1894
1895 /* The variables used to return semantic value and location from the
1896 action routines. */
1897 YYSTYPE yyval;
1898
1899
1900 /* The number of symbols on the RHS of the reduced rule.
1901 Keep to zero when no symbol should be popped. */
1902 int yylen = 0;
1903
1904 YYDPRINTF ((stderr, "Starting parse\n"));
1905
1906 yystate = 0;
1907 yyerrstatus = 0;
1908 yynerrs = 0;
1909 yychar = YYEMPTY; /* Cause a token to be read. */
1910
1911 /* Initialize stack pointers.
1912 Waste one element of value and location stack
1913 so that they stay on the same level as the state stack.
1914 The wasted elements are never initialized. */
1915
1916 yyssp = yyss;
1917 yyvsp = yyvs;
1918
1919 goto yysetstate;
1920
1921 /*------------------------------------------------------------.
1922 | yynewstate -- Push a new state, which is found in yystate. |
1923 `------------------------------------------------------------*/
1924 yynewstate:
1925 /* In all cases, when you get here, the value and location stacks
1926 have just been pushed. So pushing a state here evens the stacks. */
1927 yyssp++;
1928
1929 yysetstate:
1930 *yyssp = yystate;
1931
1932 if (yyss + yystacksize - 1 <= yyssp)
1933 {
1934 /* Get the current used size of the three stacks, in elements. */
1935 YYSIZE_T yysize = yyssp - yyss + 1;
1936
1937 #ifdef yyoverflow
1938 {
1939 /* Give user a chance to reallocate the stack. Use copies of
1940 these so that the &'s don't force the real ones into
1941 memory. */
1942 YYSTYPE *yyvs1 = yyvs;
1943 yytype_int16 *yyss1 = yyss;
1944
1945
1946 /* Each stack pointer address is followed by the size of the
1947 data in use in that stack, in bytes. This used to be a
1948 conditional around just the two extra args, but that might
1949 be undefined if yyoverflow is a macro. */
1950 yyoverflow (YY_("memory exhausted"),
1951 &yyss1, yysize * sizeof (*yyssp),
1952 &yyvs1, yysize * sizeof (*yyvsp),
1953
1954 &yystacksize);
1955
1956 yyss = yyss1;
1957 yyvs = yyvs1;
1958 }
1959 #else /* no yyoverflow */
1960 # ifndef YYSTACK_RELOCATE
1961 goto yyexhaustedlab;
1962 # else
1963 /* Extend the stack our own way. */
1964 if (YYMAXDEPTH <= yystacksize)
1965 goto yyexhaustedlab;
1966 yystacksize *= 2;
1967 if (YYMAXDEPTH < yystacksize)
1968 yystacksize = YYMAXDEPTH;
1969
1970 {
1971 yytype_int16 *yyss1 = yyss;
1972 union yyalloc *yyptr =
1973 (union yyalloc *) YYSTACK_ALLOC (YYSTACK_BYTES (yystacksize));
1974 if (! yyptr)
1975 goto yyexhaustedlab;
1976 YYSTACK_RELOCATE (yyss);
1977 YYSTACK_RELOCATE (yyvs);
1978
1979 # undef YYSTACK_RELOCATE
1980 if (yyss1 != yyssa)
1981 YYSTACK_FREE (yyss1);
1982 }
1983 # endif
1984 #endif /* no yyoverflow */
1985
1986 yyssp = yyss + yysize - 1;
1987 yyvsp = yyvs + yysize - 1;
1988
1989
1990 YYDPRINTF ((stderr, "Stack size increased to %lu\n",
1991 (unsigned long int) yystacksize));
1992
1993 if (yyss + yystacksize - 1 <= yyssp)
1994 YYABORT;
1995 }
1996
1997 YYDPRINTF ((stderr, "Entering state %d\n", yystate));
1998
1999 goto yybackup;
2000
2001 /*-----------.
2002 | yybackup. |
2003 `-----------*/
2004 yybackup:
2005
2006 /* Do appropriate processing given the current state. Read a
2007 look-ahead token if we need one and don't already have one. */
2008
2009 /* First try to decide what to do without reference to look-ahead token. */
2010 yyn = yypact[yystate];
2011 if (yyn == YYPACT_NINF)
2012 goto yydefault;
2013
2014 /* Not known => get a look-ahead token if don't already have one. */
2015
2016 /* YYCHAR is either YYEMPTY or YYEOF or a valid look-ahead symbol. */
2017 if (yychar == YYEMPTY)
2018 {
2019 YYDPRINTF ((stderr, "Reading a token: "));
2020 yychar = YYLEX;
2021 }
2022
2023 if (yychar <= YYEOF)
2024 {
2025 yychar = yytoken = YYEOF;
2026 YYDPRINTF ((stderr, "Now at end of input.\n"));
2027 }
2028 else
2029 {
2030 yytoken = YYTRANSLATE (yychar);
2031 YY_SYMBOL_PRINT ("Next token is", yytoken, &yylval, &yylloc);
2032 }
2033
2034 /* If the proper action on seeing token YYTOKEN is to reduce or to
2035 detect an error, take that action. */
2036 yyn += yytoken;
2037 if (yyn < 0 || YYLAST < yyn || yycheck[yyn] != yytoken)
2038 goto yydefault;
2039 yyn = yytable[yyn];
2040 if (yyn <= 0)
2041 {
2042 if (yyn == 0 || yyn == YYTABLE_NINF)
2043 goto yyerrlab;
2044 yyn = -yyn;
2045 goto yyreduce;
2046 }
2047
2048 if (yyn == YYFINAL)
2049 YYACCEPT;
2050
2051 /* Count tokens shifted since error; after three, turn off error
2052 status. */
2053 if (yyerrstatus)
2054 yyerrstatus--;
2055
2056 /* Shift the look-ahead token. */
2057 YY_SYMBOL_PRINT ("Shifting", yytoken, &yylval, &yylloc);
2058
2059 /* Discard the shifted token unless it is eof. */
2060 if (yychar != YYEOF)
2061 yychar = YYEMPTY;
2062
2063 yystate = yyn;
2064 *++yyvsp = yylval;
2065
2066 goto yynewstate;
2067
2068
2069 /*-----------------------------------------------------------.
2070 | yydefault -- do the default action for the current state. |
2071 `-----------------------------------------------------------*/
2072 yydefault:
2073 yyn = yydefact[yystate];
2074 if (yyn == 0)
2075 goto yyerrlab;
2076 goto yyreduce;
2077
2078
2079 /*-----------------------------.
2080 | yyreduce -- Do a reduction. |
2081 `-----------------------------*/
2082 yyreduce:
2083 /* yyn is the number of a rule to reduce with. */
2084 yylen = yyr2[yyn];
2085
2086 /* If YYLEN is nonzero, implement the default value of the action:
2087 `$$ = $1'.
2088
2089 Otherwise, the following line sets YYVAL to garbage.
2090 This behavior is undocumented and Bison
2091 users should not rely upon it. Assigning to YYVAL
2092 unconditionally makes the parser a bit smaller, and it avoids a
2093 GCC warning that YYVAL may be used uninitialized. */
2094 yyval = yyvsp[1-yylen];
2095
2096
2097 YY_REDUCE_PRINT (yyn);
2098 switch (yyn)
2099 {
2100 case 2:
2101 #line 383 "/usr/src/local/bash/bash-4.3-patched/parse.y"
2102 {
2103 /* Case of regular command. Discard the error
2104 safety net,and return the command just parsed. */
2105 global_command = (yyvsp[(1) - (2)].command);
2106 eof_encountered = 0;
2107 /* discard_parser_constructs (0); */
2108 if (parser_state & PST_CMDSUBST)
2109 parser_state |= PST_EOFTOKEN;
2110 YYACCEPT;
2111 }
2112 break;
2113
2114 case 3:
2115 #line 394 "/usr/src/local/bash/bash-4.3-patched/parse.y"
2116 {
2117 /* Case of regular command, but not a very
2118 interesting one. Return a NULL command. */
2119 global_command = (COMMAND *)NULL;
2120 if (parser_state & PST_CMDSUBST)
2121 parser_state |= PST_EOFTOKEN;
2122 YYACCEPT;
2123 }
2124 break;
2125
2126 case 4:
2127 #line 403 "/usr/src/local/bash/bash-4.3-patched/parse.y"
2128 {
2129 /* Error during parsing. Return NULL command. */
2130 global_command = (COMMAND *)NULL;
2131 eof_encountered = 0;
2132 /* discard_parser_constructs (1); */
2133 if (interactive && parse_and_execute_level == 0)
2134 {
2135 YYACCEPT;
2136 }
2137 else
2138 {
2139 YYABORT;
2140 }
2141 }
2142 break;
2143
2144 case 5:
2145 #line 418 "/usr/src/local/bash/bash-4.3-patched/parse.y"
2146 {
2147 /* Case of EOF seen by itself. Do ignoreeof or
2148 not. */
2149 global_command = (COMMAND *)NULL;
2150 handle_eof_input_unit ();
2151 YYACCEPT;
2152 }
2153 break;
2154
2155 case 6:
2156 #line 428 "/usr/src/local/bash/bash-4.3-patched/parse.y"
2157 { (yyval.word_list) = make_word_list ((yyvsp[(1) - (1)].word), (WORD_LIST *)NULL); }
2158 break;
2159
2160 case 7:
2161 #line 430 "/usr/src/local/bash/bash-4.3-patched/parse.y"
2162 { (yyval.word_list) = make_word_list ((yyvsp[(2) - (2)].word), (yyvsp[(1) - (2)].word_list)); }
2163 break;
2164
2165 case 8:
2166 #line 434 "/usr/src/local/bash/bash-4.3-patched/parse.y"
2167 {
2168 source.dest = 1;
2169 redir.filename = (yyvsp[(2) - (2)].word);
2170 (yyval.redirect) = make_redirection (source, r_output_direction, redir, 0);
2171 }
2172 break;
2173
2174 case 9:
2175 #line 440 "/usr/src/local/bash/bash-4.3-patched/parse.y"
2176 {
2177 source.dest = 0;
2178 redir.filename = (yyvsp[(2) - (2)].word);
2179 (yyval.redirect) = make_redirection (source, r_input_direction, redir, 0);
2180 }
2181 break;
2182
2183 case 10:
2184 #line 446 "/usr/src/local/bash/bash-4.3-patched/parse.y"
2185 {
2186 source.dest = (yyvsp[(1) - (3)].number);
2187 redir.filename = (yyvsp[(3) - (3)].word);
2188 (yyval.redirect) = make_redirection (source, r_output_direction, redir, 0);
2189 }
2190 break;
2191
2192 case 11:
2193 #line 452 "/usr/src/local/bash/bash-4.3-patched/parse.y"
2194 {
2195 source.dest = (yyvsp[(1) - (3)].number);
2196 redir.filename = (yyvsp[(3) - (3)].word);
2197 (yyval.redirect) = make_redirection (source, r_input_direction, redir, 0);
2198 }
2199 break;
2200
2201 case 12:
2202 #line 458 "/usr/src/local/bash/bash-4.3-patched/parse.y"
2203 {
2204 source.filename = (yyvsp[(1) - (3)].word);
2205 redir.filename = (yyvsp[(3) - (3)].word);
2206 (yyval.redirect) = make_redirection (source, r_output_direction, redir, REDIR_VARASSIGN);
2207 }
2208 break;
2209
2210 case 13:
2211 #line 464 "/usr/src/local/bash/bash-4.3-patched/parse.y"
2212 {
2213 source.filename = (yyvsp[(1) - (3)].word);
2214 redir.filename = (yyvsp[(3) - (3)].word);
2215 (yyval.redirect) = make_redirection (source, r_input_direction, redir, REDIR_VARASSIGN);
2216 }
2217 break;
2218
2219 case 14:
2220 #line 470 "/usr/src/local/bash/bash-4.3-patched/parse.y"
2221 {
2222 source.dest = 1;
2223 redir.filename = (yyvsp[(2) - (2)].word);
2224 (yyval.redirect) = make_redirection (source, r_appending_to, redir, 0);
2225 }
2226 break;
2227
2228 case 15:
2229 #line 476 "/usr/src/local/bash/bash-4.3-patched/parse.y"
2230 {
2231 source.dest = (yyvsp[(1) - (3)].number);
2232 redir.filename = (yyvsp[(3) - (3)].word);
2233 (yyval.redirect) = make_redirection (source, r_appending_to, redir, 0);
2234 }
2235 break;
2236
2237 case 16:
2238 #line 482 "/usr/src/local/bash/bash-4.3-patched/parse.y"
2239 {
2240 source.filename = (yyvsp[(1) - (3)].word);
2241 redir.filename = (yyvsp[(3) - (3)].word);
2242 (yyval.redirect) = make_redirection (source, r_appending_to, redir, REDIR_VARASSIGN);
2243 }
2244 break;
2245
2246 case 17:
2247 #line 488 "/usr/src/local/bash/bash-4.3-patched/parse.y"
2248 {
2249 source.dest = 1;
2250 redir.filename = (yyvsp[(2) - (2)].word);
2251 (yyval.redirect) = make_redirection (source, r_output_force, redir, 0);
2252 }
2253 break;
2254
2255 case 18:
2256 #line 494 "/usr/src/local/bash/bash-4.3-patched/parse.y"
2257 {
2258 source.dest = (yyvsp[(1) - (3)].number);
2259 redir.filename = (yyvsp[(3) - (3)].word);
2260 (yyval.redirect) = make_redirection (source, r_output_force, redir, 0);
2261 }
2262 break;
2263
2264 case 19:
2265 #line 500 "/usr/src/local/bash/bash-4.3-patched/parse.y"
2266 {
2267 source.filename = (yyvsp[(1) - (3)].word);
2268 redir.filename = (yyvsp[(3) - (3)].word);
2269 (yyval.redirect) = make_redirection (source, r_output_force, redir, REDIR_VARASSIGN);
2270 }
2271 break;
2272
2273 case 20:
2274 #line 506 "/usr/src/local/bash/bash-4.3-patched/parse.y"
2275 {
2276 source.dest = 0;
2277 redir.filename = (yyvsp[(2) - (2)].word);
2278 (yyval.redirect) = make_redirection (source, r_input_output, redir, 0);
2279 }
2280 break;
2281
2282 case 21:
2283 #line 512 "/usr/src/local/bash/bash-4.3-patched/parse.y"
2284 {
2285 source.dest = (yyvsp[(1) - (3)].number);
2286 redir.filename = (yyvsp[(3) - (3)].word);
2287 (yyval.redirect) = make_redirection (source, r_input_output, redir, 0);
2288 }
2289 break;
2290
2291 case 22:
2292 #line 518 "/usr/src/local/bash/bash-4.3-patched/parse.y"
2293 {
2294 source.filename = (yyvsp[(1) - (3)].word);
2295 redir.filename = (yyvsp[(3) - (3)].word);
2296 (yyval.redirect) = make_redirection (source, r_input_output, redir, REDIR_VARASSIGN);
2297 }
2298 break;
2299
2300 case 23:
2301 #line 524 "/usr/src/local/bash/bash-4.3-patched/parse.y"
2302 {
2303 source.dest = 0;
2304 redir.filename = (yyvsp[(2) - (2)].word);
2305 (yyval.redirect) = make_redirection (source, r_reading_until, redir, 0);
2306 push_heredoc ((yyval.redirect));
2307 }
2308 break;
2309
2310 case 24:
2311 #line 531 "/usr/src/local/bash/bash-4.3-patched/parse.y"
2312 {
2313 source.dest = (yyvsp[(1) - (3)].number);
2314 redir.filename = (yyvsp[(3) - (3)].word);
2315 (yyval.redirect) = make_redirection (source, r_reading_until, redir, 0);
2316 push_heredoc ((yyval.redirect));
2317 }
2318 break;
2319
2320 case 25:
2321 #line 538 "/usr/src/local/bash/bash-4.3-patched/parse.y"
2322 {
2323 source.filename = (yyvsp[(1) - (3)].word);
2324 redir.filename = (yyvsp[(3) - (3)].word);
2325 (yyval.redirect) = make_redirection (source, r_reading_until, redir, REDIR_VARASSIGN);
2326 push_heredoc ((yyval.redirect));
2327 }
2328 break;
2329
2330 case 26:
2331 #line 545 "/usr/src/local/bash/bash-4.3-patched/parse.y"
2332 {
2333 source.dest = 0;
2334 redir.filename = (yyvsp[(2) - (2)].word);
2335 (yyval.redirect) = make_redirection (source, r_deblank_reading_until, redir, 0);
2336 push_heredoc ((yyval.redirect));
2337 }
2338 break;
2339
2340 case 27:
2341 #line 552 "/usr/src/local/bash/bash-4.3-patched/parse.y"
2342 {
2343 source.dest = (yyvsp[(1) - (3)].number);
2344 redir.filename = (yyvsp[(3) - (3)].word);
2345 (yyval.redirect) = make_redirection (source, r_deblank_reading_until, redir, 0);
2346 push_heredoc ((yyval.redirect));
2347 }
2348 break;
2349
2350 case 28:
2351 #line 559 "/usr/src/local/bash/bash-4.3-patched/parse.y"
2352 {
2353 source.filename = (yyvsp[(1) - (3)].word);
2354 redir.filename = (yyvsp[(3) - (3)].word);
2355 (yyval.redirect) = make_redirection (source, r_deblank_reading_until, redir, REDIR_VARASSIGN);
2356 push_heredoc ((yyval.redirect));
2357 }
2358 break;
2359
2360 case 29:
2361 #line 566 "/usr/src/local/bash/bash-4.3-patched/parse.y"
2362 {
2363 source.dest = 0;
2364 redir.filename = (yyvsp[(2) - (2)].word);
2365 (yyval.redirect) = make_redirection (source, r_reading_string, redir, 0);
2366 }
2367 break;
2368
2369 case 30:
2370 #line 572 "/usr/src/local/bash/bash-4.3-patched/parse.y"
2371 {
2372 source.dest = (yyvsp[(1) - (3)].number);
2373 redir.filename = (yyvsp[(3) - (3)].word);
2374 (yyval.redirect) = make_redirection (source, r_reading_string, redir, 0);
2375 }
2376 break;
2377
2378 case 31:
2379 #line 578 "/usr/src/local/bash/bash-4.3-patched/parse.y"
2380 {
2381 source.filename = (yyvsp[(1) - (3)].word);
2382 redir.filename = (yyvsp[(3) - (3)].word);
2383 (yyval.redirect) = make_redirection (source, r_reading_string, redir, REDIR_VARASSIGN);
2384 }
2385 break;
2386
2387 case 32:
2388 #line 584 "/usr/src/local/bash/bash-4.3-patched/parse.y"
2389 {
2390 source.dest = 0;
2391 redir.dest = (yyvsp[(2) - (2)].number);
2392 (yyval.redirect) = make_redirection (source, r_duplicating_input, redir, 0);
2393 }
2394 break;
2395
2396 case 33:
2397 #line 590 "/usr/src/local/bash/bash-4.3-patched/parse.y"
2398 {
2399 source.dest = (yyvsp[(1) - (3)].number);
2400 redir.dest = (yyvsp[(3) - (3)].number);
2401 (yyval.redirect) = make_redirection (source, r_duplicating_input, redir, 0);
2402 }
2403 break;
2404
2405 case 34:
2406 #line 596 "/usr/src/local/bash/bash-4.3-patched/parse.y"
2407 {
2408 source.filename = (yyvsp[(1) - (3)].word);
2409 redir.dest = (yyvsp[(3) - (3)].number);
2410 (yyval.redirect) = make_redirection (source, r_duplicating_input, redir, REDIR_VARASSIGN);
2411 }
2412 break;
2413
2414 case 35:
2415 #line 602 "/usr/src/local/bash/bash-4.3-patched/parse.y"
2416 {
2417 source.dest = 1;
2418 redir.dest = (yyvsp[(2) - (2)].number);
2419 (yyval.redirect) = make_redirection (source, r_duplicating_output, redir, 0);
2420 }
2421 break;
2422
2423 case 36:
2424 #line 608 "/usr/src/local/bash/bash-4.3-patched/parse.y"
2425 {
2426 source.dest = (yyvsp[(1) - (3)].number);
2427 redir.dest = (yyvsp[(3) - (3)].number);
2428 (yyval.redirect) = make_redirection (source, r_duplicating_output, redir, 0);
2429 }
2430 break;
2431
2432 case 37:
2433 #line 614 "/usr/src/local/bash/bash-4.3-patched/parse.y"
2434 {
2435 source.filename = (yyvsp[(1) - (3)].word);
2436 redir.dest = (yyvsp[(3) - (3)].number);
2437 (yyval.redirect) = make_redirection (source, r_duplicating_output, redir, REDIR_VARASSIGN);
2438 }
2439 break;
2440
2441 case 38:
2442 #line 620 "/usr/src/local/bash/bash-4.3-patched/parse.y"
2443 {
2444 source.dest = 0;
2445 redir.filename = (yyvsp[(2) - (2)].word);
2446 (yyval.redirect) = make_redirection (source, r_duplicating_input_word, redir, 0);
2447 }
2448 break;
2449
2450 case 39:
2451 #line 626 "/usr/src/local/bash/bash-4.3-patched/parse.y"
2452 {
2453 source.dest = (yyvsp[(1) - (3)].number);
2454 redir.filename = (yyvsp[(3) - (3)].word);
2455 (yyval.redirect) = make_redirection (source, r_duplicating_input_word, redir, 0);
2456 }
2457 break;
2458
2459 case 40:
2460 #line 632 "/usr/src/local/bash/bash-4.3-patched/parse.y"
2461 {
2462 source.filename = (yyvsp[(1) - (3)].word);
2463 redir.filename = (yyvsp[(3) - (3)].word);
2464 (yyval.redirect) = make_redirection (source, r_duplicating_input_word, redir, REDIR_VARASSIGN);
2465 }
2466 break;
2467
2468 case 41:
2469 #line 638 "/usr/src/local/bash/bash-4.3-patched/parse.y"
2470 {
2471 source.dest = 1;
2472 redir.filename = (yyvsp[(2) - (2)].word);
2473 (yyval.redirect) = make_redirection (source, r_duplicating_output_word, redir, 0);
2474 }
2475 break;
2476
2477 case 42:
2478 #line 644 "/usr/src/local/bash/bash-4.3-patched/parse.y"
2479 {
2480 source.dest = (yyvsp[(1) - (3)].number);
2481 redir.filename = (yyvsp[(3) - (3)].word);
2482 (yyval.redirect) = make_redirection (source, r_duplicating_output_word, redir, 0);
2483 }
2484 break;
2485
2486 case 43:
2487 #line 650 "/usr/src/local/bash/bash-4.3-patched/parse.y"
2488 {
2489 source.filename = (yyvsp[(1) - (3)].word);
2490 redir.filename = (yyvsp[(3) - (3)].word);
2491 (yyval.redirect) = make_redirection (source, r_duplicating_output_word, redir, REDIR_VARASSIGN);
2492 }
2493 break;
2494
2495 case 44:
2496 #line 656 "/usr/src/local/bash/bash-4.3-patched/parse.y"
2497 {
2498 source.dest = 1;
2499 redir.dest = 0;
2500 (yyval.redirect) = make_redirection (source, r_close_this, redir, 0);
2501 }
2502 break;
2503
2504 case 45:
2505 #line 662 "/usr/src/local/bash/bash-4.3-patched/parse.y"
2506 {
2507 source.dest = (yyvsp[(1) - (3)].number);
2508 redir.dest = 0;
2509 (yyval.redirect) = make_redirection (source, r_close_this, redir, 0);
2510 }
2511 break;
2512
2513 case 46:
2514 #line 668 "/usr/src/local/bash/bash-4.3-patched/parse.y"
2515 {
2516 source.filename = (yyvsp[(1) - (3)].word);
2517 redir.dest = 0;
2518 (yyval.redirect) = make_redirection (source, r_close_this, redir, REDIR_VARASSIGN);
2519 }
2520 break;
2521
2522 case 47:
2523 #line 674 "/usr/src/local/bash/bash-4.3-patched/parse.y"
2524 {
2525 source.dest = 0;
2526 redir.dest = 0;
2527 (yyval.redirect) = make_redirection (source, r_close_this, redir, 0);
2528 }
2529 break;
2530
2531 case 48:
2532 #line 680 "/usr/src/local/bash/bash-4.3-patched/parse.y"
2533 {
2534 source.dest = (yyvsp[(1) - (3)].number);
2535 redir.dest = 0;
2536 (yyval.redirect) = make_redirection (source, r_close_this, redir, 0);
2537 }
2538 break;
2539
2540 case 49:
2541 #line 686 "/usr/src/local/bash/bash-4.3-patched/parse.y"
2542 {
2543 source.filename = (yyvsp[(1) - (3)].word);
2544 redir.dest = 0;
2545 (yyval.redirect) = make_redirection (source, r_close_this, redir, REDIR_VARASSIGN);
2546 }
2547 break;
2548
2549 case 50:
2550 #line 692 "/usr/src/local/bash/bash-4.3-patched/parse.y"
2551 {
2552 source.dest = 1;
2553 redir.filename = (yyvsp[(2) - (2)].word);
2554 (yyval.redirect) = make_redirection (source, r_err_and_out, redir, 0);
2555 }
2556 break;
2557
2558 case 51:
2559 #line 698 "/usr/src/local/bash/bash-4.3-patched/parse.y"
2560 {
2561 source.dest = 1;
2562 redir.filename = (yyvsp[(2) - (2)].word);
2563 (yyval.redirect) = make_redirection (source, r_append_err_and_out, redir, 0);
2564 }
2565 break;
2566
2567 case 52:
2568 #line 706 "/usr/src/local/bash/bash-4.3-patched/parse.y"
2569 { (yyval.element).word = (yyvsp[(1) - (1)].word); (yyval.element).redirect = 0; }
2570 break;
2571
2572 case 53:
2573 #line 708 "/usr/src/local/bash/bash-4.3-patched/parse.y"
2574 { (yyval.element).word = (yyvsp[(1) - (1)].word); (yyval.element).redirect = 0; }
2575 break;
2576
2577 case 54:
2578 #line 710 "/usr/src/local/bash/bash-4.3-patched/parse.y"
2579 { (yyval.element).redirect = (yyvsp[(1) - (1)].redirect); (yyval.element).word = 0; }
2580 break;
2581
2582 case 55:
2583 #line 714 "/usr/src/local/bash/bash-4.3-patched/parse.y"
2584 {
2585 (yyval.redirect) = (yyvsp[(1) - (1)].redirect);
2586 }
2587 break;
2588
2589 case 56:
2590 #line 718 "/usr/src/local/bash/bash-4.3-patched/parse.y"
2591 {
2592 register REDIRECT *t;
2593
2594 for (t = (yyvsp[(1) - (2)].redirect); t->next; t = t->next)
2595 ;
2596 t->next = (yyvsp[(2) - (2)].redirect);
2597 (yyval.redirect) = (yyvsp[(1) - (2)].redirect);
2598 }
2599 break;
2600
2601 case 57:
2602 #line 729 "/usr/src/local/bash/bash-4.3-patched/parse.y"
2603 { (yyval.command) = make_simple_command ((yyvsp[(1) - (1)].element), (COMMAND *)NULL); }
2604 break;
2605
2606 case 58:
2607 #line 731 "/usr/src/local/bash/bash-4.3-patched/parse.y"
2608 { (yyval.command) = make_simple_command ((yyvsp[(2) - (2)].element), (yyvsp[(1) - (2)].command)); }
2609 break;
2610
2611 case 59:
2612 #line 735 "/usr/src/local/bash/bash-4.3-patched/parse.y"
2613 { (yyval.command) = clean_simple_command ((yyvsp[(1) - (1)].command)); }
2614 break;
2615
2616 case 60:
2617 #line 737 "/usr/src/local/bash/bash-4.3-patched/parse.y"
2618 { (yyval.command) = (yyvsp[(1) - (1)].command); }
2619 break;
2620
2621 case 61:
2622 #line 739 "/usr/src/local/bash/bash-4.3-patched/parse.y"
2623 {
2624 COMMAND *tc;
2625
2626 tc = (yyvsp[(1) - (2)].command);
2627 if (tc->redirects)
2628 {
2629 register REDIRECT *t;
2630 for (t = tc->redirects; t->next; t = t->next)
2631 ;
2632 t->next = (yyvsp[(2) - (2)].redirect);
2633 }
2634 else
2635 tc->redirects = (yyvsp[(2) - (2)].redirect);
2636 (yyval.command) = (yyvsp[(1) - (2)].command);
2637 }
2638 break;
2639
2640 case 62:
2641 #line 755 "/usr/src/local/bash/bash-4.3-patched/parse.y"
2642 { (yyval.command) = (yyvsp[(1) - (1)].command); }
2643 break;
2644
2645 case 63:
2646 #line 757 "/usr/src/local/bash/bash-4.3-patched/parse.y"
2647 { (yyval.command) = (yyvsp[(1) - (1)].command); }
2648 break;
2649
2650 case 64:
2651 #line 761 "/usr/src/local/bash/bash-4.3-patched/parse.y"
2652 { (yyval.command) = (yyvsp[(1) - (1)].command); }
2653 break;
2654
2655 case 65:
2656 #line 763 "/usr/src/local/bash/bash-4.3-patched/parse.y"
2657 { (yyval.command) = (yyvsp[(1) - (1)].command); }
2658 break;
2659
2660 case 66:
2661 #line 765 "/usr/src/local/bash/bash-4.3-patched/parse.y"
2662 { (yyval.command) = make_while_command ((yyvsp[(2) - (5)].command), (yyvsp[(4) - (5)].command)); }
2663 break;
2664
2665 case 67:
2666 #line 767 "/usr/src/local/bash/bash-4.3-patched/parse.y"
2667 { (yyval.command) = make_until_command ((yyvsp[(2) - (5)].command), (yyvsp[(4) - (5)].command)); }
2668 break;
2669
2670 case 68:
2671 #line 769 "/usr/src/local/bash/bash-4.3-patched/parse.y"
2672 { (yyval.command) = (yyvsp[(1) - (1)].command); }
2673 break;
2674
2675 case 69:
2676 #line 771 "/usr/src/local/bash/bash-4.3-patched/parse.y"
2677 { (yyval.command) = (yyvsp[(1) - (1)].command); }
2678 break;
2679
2680 case 70:
2681 #line 773 "/usr/src/local/bash/bash-4.3-patched/parse.y"
2682 { (yyval.command) = (yyvsp[(1) - (1)].command); }
2683 break;
2684
2685 case 71:
2686 #line 775 "/usr/src/local/bash/bash-4.3-patched/parse.y"
2687 { (yyval.command) = (yyvsp[(1) - (1)].command); }
2688 break;
2689
2690 case 72:
2691 #line 777 "/usr/src/local/bash/bash-4.3-patched/parse.y"
2692 { (yyval.command) = (yyvsp[(1) - (1)].command); }
2693 break;
2694
2695 case 73:
2696 #line 779 "/usr/src/local/bash/bash-4.3-patched/parse.y"
2697 { (yyval.command) = (yyvsp[(1) - (1)].command); }
2698 break;
2699
2700 case 74:
2701 #line 781 "/usr/src/local/bash/bash-4.3-patched/parse.y"
2702 { (yyval.command) = (yyvsp[(1) - (1)].command); }
2703 break;
2704
2705 case 75:
2706 #line 785 "/usr/src/local/bash/bash-4.3-patched/parse.y"
2707 {
2708 (yyval.command) = make_for_command ((yyvsp[(2) - (6)].word), add_string_to_list ("\"$@\"", (WORD_LIST *)NULL), (yyvsp[(5) - (6)].command), word_lineno[word_top]);
2709 if (word_top > 0) word_top--;
2710 }
2711 break;
2712
2713 case 76:
2714 #line 790 "/usr/src/local/bash/bash-4.3-patched/parse.y"
2715 {
2716 (yyval.command) = make_for_command ((yyvsp[(2) - (6)].word), add_string_to_list ("\"$@\"", (WORD_LIST *)NULL), (yyvsp[(5) - (6)].command), word_lineno[word_top]);
2717 if (word_top > 0) word_top--;
2718 }
2719 break;
2720
2721 case 77:
2722 #line 795 "/usr/src/local/bash/bash-4.3-patched/parse.y"
2723 {
2724 (yyval.command) = make_for_command ((yyvsp[(2) - (7)].word), add_string_to_list ("\"$@\"", (WORD_LIST *)NULL), (yyvsp[(6) - (7)].command), word_lineno[word_top]);
2725 if (word_top > 0) word_top--;
2726 }
2727 break;
2728
2729 case 78:
2730 #line 800 "/usr/src/local/bash/bash-4.3-patched/parse.y"
2731 {
2732 (yyval.command) = make_for_command ((yyvsp[(2) - (7)].word), add_string_to_list ("\"$@\"", (WORD_LIST *)NULL), (yyvsp[(6) - (7)].command), word_lineno[word_top]);
2733 if (word_top > 0) word_top--;
2734 }
2735 break;
2736
2737 case 79:
2738 #line 805 "/usr/src/local/bash/bash-4.3-patched/parse.y"
2739 {
2740 (yyval.command) = make_for_command ((yyvsp[(2) - (10)].word), REVERSE_LIST ((yyvsp[(5) - (10)].word_list), WORD_LIST *), (yyvsp[(9) - (10)].command), word_lineno[word_top]);
2741 if (word_top > 0) word_top--;
2742 }
2743 break;
2744
2745 case 80:
2746 #line 810 "/usr/src/local/bash/bash-4.3-patched/parse.y"
2747 {
2748 (yyval.command) = make_for_command ((yyvsp[(2) - (10)].word), REVERSE_LIST ((yyvsp[(5) - (10)].word_list), WORD_LIST *), (yyvsp[(9) - (10)].command), word_lineno[word_top]);
2749 if (word_top > 0) word_top--;
2750 }
2751 break;
2752
2753 case 81:
2754 #line 815 "/usr/src/local/bash/bash-4.3-patched/parse.y"
2755 {
2756 (yyval.command) = make_for_command ((yyvsp[(2) - (9)].word), (WORD_LIST *)NULL, (yyvsp[(8) - (9)].command), word_lineno[word_top]);
2757 if (word_top > 0) word_top--;
2758 }
2759 break;
2760
2761 case 82:
2762 #line 820 "/usr/src/local/bash/bash-4.3-patched/parse.y"
2763 {
2764 (yyval.command) = make_for_command ((yyvsp[(2) - (9)].word), (WORD_LIST *)NULL, (yyvsp[(8) - (9)].command), word_lineno[word_top]);
2765 if (word_top > 0) word_top--;
2766 }
2767 break;
2768
2769 case 83:
2770 #line 827 "/usr/src/local/bash/bash-4.3-patched/parse.y"
2771 {
2772 (yyval.command) = make_arith_for_command ((yyvsp[(2) - (7)].word_list), (yyvsp[(6) - (7)].command), arith_for_lineno);
2773 if (word_top > 0) word_top--;
2774 }
2775 break;
2776
2777 case 84:
2778 #line 832 "/usr/src/local/bash/bash-4.3-patched/parse.y"
2779 {
2780 (yyval.command) = make_arith_for_command ((yyvsp[(2) - (7)].word_list), (yyvsp[(6) - (7)].command), arith_for_lineno);
2781 if (word_top > 0) word_top--;
2782 }
2783 break;
2784
2785 case 85:
2786 #line 837 "/usr/src/local/bash/bash-4.3-patched/parse.y"
2787 {
2788 (yyval.command) = make_arith_for_command ((yyvsp[(2) - (5)].word_list), (yyvsp[(4) - (5)].command), arith_for_lineno);
2789 if (word_top > 0) word_top--;
2790 }
2791 break;
2792
2793 case 86:
2794 #line 842 "/usr/src/local/bash/bash-4.3-patched/parse.y"
2795 {
2796 (yyval.command) = make_arith_for_command ((yyvsp[(2) - (5)].word_list), (yyvsp[(4) - (5)].command), arith_for_lineno);
2797 if (word_top > 0) word_top--;
2798 }
2799 break;
2800
2801 case 87:
2802 #line 849 "/usr/src/local/bash/bash-4.3-patched/parse.y"
2803 {
2804 (yyval.command) = make_select_command ((yyvsp[(2) - (6)].word), add_string_to_list ("\"$@\"", (WORD_LIST *)NULL), (yyvsp[(5) - (6)].command), word_lineno[word_top]);
2805 if (word_top > 0) word_top--;
2806 }
2807 break;
2808
2809 case 88:
2810 #line 854 "/usr/src/local/bash/bash-4.3-patched/parse.y"
2811 {
2812 (yyval.command) = make_select_command ((yyvsp[(2) - (6)].word), add_string_to_list ("\"$@\"", (WORD_LIST *)NULL), (yyvsp[(5) - (6)].command), word_lineno[word_top]);
2813 if (word_top > 0) word_top--;
2814 }
2815 break;
2816
2817 case 89:
2818 #line 859 "/usr/src/local/bash/bash-4.3-patched/parse.y"
2819 {
2820 (yyval.command) = make_select_command ((yyvsp[(2) - (7)].word), add_string_to_list ("\"$@\"", (WORD_LIST *)NULL), (yyvsp[(6) - (7)].command), word_lineno[word_top]);
2821 if (word_top > 0) word_top--;
2822 }
2823 break;
2824
2825 case 90:
2826 #line 864 "/usr/src/local/bash/bash-4.3-patched/parse.y"
2827 {
2828 (yyval.command) = make_select_command ((yyvsp[(2) - (7)].word), add_string_to_list ("\"$@\"", (WORD_LIST *)NULL), (yyvsp[(6) - (7)].command), word_lineno[word_top]);
2829 if (word_top > 0) word_top--;
2830 }
2831 break;
2832
2833 case 91:
2834 #line 869 "/usr/src/local/bash/bash-4.3-patched/parse.y"
2835 {
2836 (yyval.command) = make_select_command ((yyvsp[(2) - (10)].word), REVERSE_LIST ((yyvsp[(5) - (10)].word_list), WORD_LIST *), (yyvsp[(9) - (10)].command), word_lineno[word_top]);
2837 if (word_top > 0) word_top--;
2838 }
2839 break;
2840
2841 case 92:
2842 #line 874 "/usr/src/local/bash/bash-4.3-patched/parse.y"
2843 {
2844 (yyval.command) = make_select_command ((yyvsp[(2) - (10)].word), REVERSE_LIST ((yyvsp[(5) - (10)].word_list), WORD_LIST *), (yyvsp[(9) - (10)].command), word_lineno[word_top]);
2845 if (word_top > 0) word_top--;
2846 }
2847 break;
2848
2849 case 93:
2850 #line 881 "/usr/src/local/bash/bash-4.3-patched/parse.y"
2851 {
2852 (yyval.command) = make_case_command ((yyvsp[(2) - (6)].word), (PATTERN_LIST *)NULL, word_lineno[word_top]);
2853 if (word_top > 0) word_top--;
2854 }
2855 break;
2856
2857 case 94:
2858 #line 886 "/usr/src/local/bash/bash-4.3-patched/parse.y"
2859 {
2860 (yyval.command) = make_case_command ((yyvsp[(2) - (7)].word), (yyvsp[(5) - (7)].pattern), word_lineno[word_top]);
2861 if (word_top > 0) word_top--;
2862 }
2863 break;
2864
2865 case 95:
2866 #line 891 "/usr/src/local/bash/bash-4.3-patched/parse.y"
2867 {
2868 (yyval.command) = make_case_command ((yyvsp[(2) - (6)].word), (yyvsp[(5) - (6)].pattern), word_lineno[word_top]);
2869 if (word_top > 0) word_top--;
2870 }
2871 break;
2872
2873 case 96:
2874 #line 898 "/usr/src/local/bash/bash-4.3-patched/parse.y"
2875 { (yyval.command) = make_function_def ((yyvsp[(1) - (5)].word), (yyvsp[(5) - (5)].command), function_dstart, function_bstart); }
2876 break;
2877
2878 case 97:
2879 #line 901 "/usr/src/local/bash/bash-4.3-patched/parse.y"
2880 { (yyval.command) = make_function_def ((yyvsp[(2) - (6)].word), (yyvsp[(6) - (6)].command), function_dstart, function_bstart); }
2881 break;
2882
2883 case 98:
2884 #line 904 "/usr/src/local/bash/bash-4.3-patched/parse.y"
2885 { (yyval.command) = make_function_def ((yyvsp[(2) - (4)].word), (yyvsp[(4) - (4)].command), function_dstart, function_bstart); }
2886 break;
2887
2888 case 99:
2889 #line 908 "/usr/src/local/bash/bash-4.3-patched/parse.y"
2890 { (yyval.command) = (yyvsp[(1) - (1)].command); }
2891 break;
2892
2893 case 100:
2894 #line 910 "/usr/src/local/bash/bash-4.3-patched/parse.y"
2895 {
2896 COMMAND *tc;
2897
2898 tc = (yyvsp[(1) - (2)].command);
2899 /* According to Posix.2 3.9.5, redirections
2900 specified after the body of a function should
2901 be attached to the function and performed when
2902 the function is executed, not as part of the
2903 function definition command. */
2904 /* XXX - I don't think it matters, but we might
2905 want to change this in the future to avoid
2906 problems differentiating between a function
2907 definition with a redirection and a function
2908 definition containing a single command with a
2909 redirection. The two are semantically equivalent,
2910 though -- the only difference is in how the
2911 command printing code displays the redirections. */
2912 if (tc->redirects)
2913 {
2914 register REDIRECT *t;
2915 for (t = tc->redirects; t->next; t = t->next)
2916 ;
2917 t->next = (yyvsp[(2) - (2)].redirect);
2918 }
2919 else
2920 tc->redirects = (yyvsp[(2) - (2)].redirect);
2921 (yyval.command) = (yyvsp[(1) - (2)].command);
2922 }
2923 break;
2924
2925 case 101:
2926 #line 941 "/usr/src/local/bash/bash-4.3-patched/parse.y"
2927 {
2928 (yyval.command) = make_subshell_command ((yyvsp[(2) - (3)].command));
2929 (yyval.command)->flags |= CMD_WANT_SUBSHELL;
2930 }
2931 break;
2932
2933 case 102:
2934 #line 948 "/usr/src/local/bash/bash-4.3-patched/parse.y"
2935 {
2936 (yyval.command) = make_coproc_command ("COPROC", (yyvsp[(2) - (2)].command));
2937 (yyval.command)->flags |= CMD_WANT_SUBSHELL|CMD_COPROC_SUBSHELL;
2938 }
2939 break;
2940
2941 case 103:
2942 #line 953 "/usr/src/local/bash/bash-4.3-patched/parse.y"
2943 {
2944 COMMAND *tc;
2945
2946 tc = (yyvsp[(2) - (3)].command);
2947 if (tc->redirects)
2948 {
2949 register REDIRECT *t;
2950 for (t = tc->redirects; t->next; t = t->next)
2951 ;
2952 t->next = (yyvsp[(3) - (3)].redirect);
2953 }
2954 else
2955 tc->redirects = (yyvsp[(3) - (3)].redirect);
2956 (yyval.command) = make_coproc_command ("COPROC", (yyvsp[(2) - (3)].command));
2957 (yyval.command)->flags |= CMD_WANT_SUBSHELL|CMD_COPROC_SUBSHELL;
2958 }
2959 break;
2960
2961 case 104:
2962 #line 970 "/usr/src/local/bash/bash-4.3-patched/parse.y"
2963 {
2964 (yyval.command) = make_coproc_command ((yyvsp[(2) - (3)].word)->word, (yyvsp[(3) - (3)].command));
2965 (yyval.command)->flags |= CMD_WANT_SUBSHELL|CMD_COPROC_SUBSHELL;
2966 }
2967 break;
2968
2969 case 105:
2970 #line 975 "/usr/src/local/bash/bash-4.3-patched/parse.y"
2971 {
2972 COMMAND *tc;
2973
2974 tc = (yyvsp[(3) - (4)].command);
2975 if (tc->redirects)
2976 {
2977 register REDIRECT *t;
2978 for (t = tc->redirects; t->next; t = t->next)
2979 ;
2980 t->next = (yyvsp[(4) - (4)].redirect);
2981 }
2982 else
2983 tc->redirects = (yyvsp[(4) - (4)].redirect);
2984 (yyval.command) = make_coproc_command ((yyvsp[(2) - (4)].word)->word, (yyvsp[(3) - (4)].command));
2985 (yyval.command)->flags |= CMD_WANT_SUBSHELL|CMD_COPROC_SUBSHELL;
2986 }
2987 break;
2988
2989 case 106:
2990 #line 992 "/usr/src/local/bash/bash-4.3-patched/parse.y"
2991 {
2992 (yyval.command) = make_coproc_command ("COPROC", clean_simple_command ((yyvsp[(2) - (2)].command)));
2993 (yyval.command)->flags |= CMD_WANT_SUBSHELL|CMD_COPROC_SUBSHELL;
2994 }
2995 break;
2996
2997 case 107:
2998 #line 999 "/usr/src/local/bash/bash-4.3-patched/parse.y"
2999 { (yyval.command) = make_if_command ((yyvsp[(2) - (5)].command), (yyvsp[(4) - (5)].command), (COMMAND *)NULL); }
3000 break;
3001
3002 case 108:
3003 #line 1001 "/usr/src/local/bash/bash-4.3-patched/parse.y"
3004 { (yyval.command) = make_if_command ((yyvsp[(2) - (7)].command), (yyvsp[(4) - (7)].command), (yyvsp[(6) - (7)].command)); }
3005 break;
3006
3007 case 109:
3008 #line 1003 "/usr/src/local/bash/bash-4.3-patched/parse.y"
3009 { (yyval.command) = make_if_command ((yyvsp[(2) - (6)].command), (yyvsp[(4) - (6)].command), (yyvsp[(5) - (6)].command)); }
3010 break;
3011
3012 case 110:
3013 #line 1008 "/usr/src/local/bash/bash-4.3-patched/parse.y"
3014 { (yyval.command) = make_group_command ((yyvsp[(2) - (3)].command)); }
3015 break;
3016
3017 case 111:
3018 #line 1012 "/usr/src/local/bash/bash-4.3-patched/parse.y"
3019 { (yyval.command) = make_arith_command ((yyvsp[(1) - (1)].word_list)); }
3020 break;
3021
3022 case 112:
3023 #line 1016 "/usr/src/local/bash/bash-4.3-patched/parse.y"
3024 { (yyval.command) = (yyvsp[(2) - (3)].command); }
3025 break;
3026
3027 case 113:
3028 #line 1020 "/usr/src/local/bash/bash-4.3-patched/parse.y"
3029 { (yyval.command) = make_if_command ((yyvsp[(2) - (4)].command), (yyvsp[(4) - (4)].command), (COMMAND *)NULL); }
3030 break;
3031
3032 case 114:
3033 #line 1022 "/usr/src/local/bash/bash-4.3-patched/parse.y"
3034 { (yyval.command) = make_if_command ((yyvsp[(2) - (6)].command), (yyvsp[(4) - (6)].command), (yyvsp[(6) - (6)].command)); }
3035 break;
3036
3037 case 115:
3038 #line 1024 "/usr/src/local/bash/bash-4.3-patched/parse.y"
3039 { (yyval.command) = make_if_command ((yyvsp[(2) - (5)].command), (yyvsp[(4) - (5)].command), (yyvsp[(5) - (5)].command)); }
3040 break;
3041
3042 case 117:
3043 #line 1029 "/usr/src/local/bash/bash-4.3-patched/parse.y"
3044 { (yyvsp[(2) - (2)].pattern)->next = (yyvsp[(1) - (2)].pattern); (yyval.pattern) = (yyvsp[(2) - (2)].pattern); }
3045 break;
3046
3047 case 118:
3048 #line 1033 "/usr/src/local/bash/bash-4.3-patched/parse.y"
3049 { (yyval.pattern) = make_pattern_list ((yyvsp[(2) - (4)].word_list), (yyvsp[(4) - (4)].command)); }
3050 break;
3051
3052 case 119:
3053 #line 1035 "/usr/src/local/bash/bash-4.3-patched/parse.y"
3054 { (yyval.pattern) = make_pattern_list ((yyvsp[(2) - (4)].word_list), (COMMAND *)NULL); }
3055 break;
3056
3057 case 120:
3058 #line 1037 "/usr/src/local/bash/bash-4.3-patched/parse.y"
3059 { (yyval.pattern) = make_pattern_list ((yyvsp[(3) - (5)].word_list), (yyvsp[(5) - (5)].command)); }
3060 break;
3061
3062 case 121:
3063 #line 1039 "/usr/src/local/bash/bash-4.3-patched/parse.y"
3064 { (yyval.pattern) = make_pattern_list ((yyvsp[(3) - (5)].word_list), (COMMAND *)NULL); }
3065 break;
3066
3067 case 122:
3068 #line 1043 "/usr/src/local/bash/bash-4.3-patched/parse.y"
3069 { (yyval.pattern) = (yyvsp[(1) - (2)].pattern); }
3070 break;
3071
3072 case 123:
3073 #line 1045 "/usr/src/local/bash/bash-4.3-patched/parse.y"
3074 { (yyvsp[(2) - (3)].pattern)->next = (yyvsp[(1) - (3)].pattern); (yyval.pattern) = (yyvsp[(2) - (3)].pattern); }
3075 break;
3076
3077 case 124:
3078 #line 1047 "/usr/src/local/bash/bash-4.3-patched/parse.y"
3079 { (yyvsp[(1) - (2)].pattern)->flags |= CASEPAT_FALLTHROUGH; (yyval.pattern) = (yyvsp[(1) - (2)].pattern); }
3080 break;
3081
3082 case 125:
3083 #line 1049 "/usr/src/local/bash/bash-4.3-patched/parse.y"
3084 { (yyvsp[(2) - (3)].pattern)->flags |= CASEPAT_FALLTHROUGH; (yyvsp[(2) - (3)].pattern)->next = (yyvsp[(1) - (3)].pattern); (yyval.pattern) = (yyvsp[(2) - (3)].pattern); }
3085 break;
3086
3087 case 126:
3088 #line 1051 "/usr/src/local/bash/bash-4.3-patched/parse.y"
3089 { (yyvsp[(1) - (2)].pattern)->flags |= CASEPAT_TESTNEXT; (yyval.pattern) = (yyvsp[(1) - (2)].pattern); }
3090 break;
3091
3092 case 127:
3093 #line 1053 "/usr/src/local/bash/bash-4.3-patched/parse.y"
3094 { (yyvsp[(2) - (3)].pattern)->flags |= CASEPAT_TESTNEXT; (yyvsp[(2) - (3)].pattern)->next = (yyvsp[(1) - (3)].pattern); (yyval.pattern) = (yyvsp[(2) - (3)].pattern); }
3095 break;
3096
3097 case 128:
3098 #line 1057 "/usr/src/local/bash/bash-4.3-patched/parse.y"
3099 { (yyval.word_list) = make_word_list ((yyvsp[(1) - (1)].word), (WORD_LIST *)NULL); }
3100 break;
3101
3102 case 129:
3103 #line 1059 "/usr/src/local/bash/bash-4.3-patched/parse.y"
3104 { (yyval.word_list) = make_word_list ((yyvsp[(3) - (3)].word), (yyvsp[(1) - (3)].word_list)); }
3105 break;
3106
3107 case 130:
3108 #line 1068 "/usr/src/local/bash/bash-4.3-patched/parse.y"
3109 {
3110 (yyval.command) = (yyvsp[(2) - (2)].command);
3111 if (need_here_doc)
3112 gather_here_documents ();
3113 }
3114 break;
3115
3116 case 132:
3117 #line 1077 "/usr/src/local/bash/bash-4.3-patched/parse.y"
3118 {
3119 (yyval.command) = (yyvsp[(2) - (2)].command);
3120 }
3121 break;
3122
3123 case 134:
3124 #line 1084 "/usr/src/local/bash/bash-4.3-patched/parse.y"
3125 {
3126 if ((yyvsp[(1) - (3)].command)->type == cm_connection)
3127 (yyval.command) = connect_async_list ((yyvsp[(1) - (3)].command), (COMMAND *)NULL, '&');
3128 else
3129 (yyval.command) = command_connect ((yyvsp[(1) - (3)].command), (COMMAND *)NULL, '&');
3130 }
3131 break;
3132
3133 case 136:
3134 #line 1095 "/usr/src/local/bash/bash-4.3-patched/parse.y"
3135 { (yyval.command) = command_connect ((yyvsp[(1) - (4)].command), (yyvsp[(4) - (4)].command), AND_AND); }
3136 break;
3137
3138 case 137:
3139 #line 1097 "/usr/src/local/bash/bash-4.3-patched/parse.y"
3140 { (yyval.command) = command_connect ((yyvsp[(1) - (4)].command), (yyvsp[(4) - (4)].command), OR_OR); }
3141 break;
3142
3143 case 138:
3144 #line 1099 "/usr/src/local/bash/bash-4.3-patched/parse.y"
3145 {
3146 if ((yyvsp[(1) - (4)].command)->type == cm_connection)
3147 (yyval.command) = connect_async_list ((yyvsp[(1) - (4)].command), (yyvsp[(4) - (4)].command), '&');
3148 else
3149 (yyval.command) = command_connect ((yyvsp[(1) - (4)].command), (yyvsp[(4) - (4)].command), '&');
3150 }
3151 break;
3152
3153 case 139:
3154 #line 1106 "/usr/src/local/bash/bash-4.3-patched/parse.y"
3155 { (yyval.command) = command_connect ((yyvsp[(1) - (4)].command), (yyvsp[(4) - (4)].command), ';'); }
3156 break;
3157
3158 case 140:
3159 #line 1108 "/usr/src/local/bash/bash-4.3-patched/parse.y"
3160 { (yyval.command) = command_connect ((yyvsp[(1) - (4)].command), (yyvsp[(4) - (4)].command), ';'); }
3161 break;
3162
3163 case 141:
3164 #line 1110 "/usr/src/local/bash/bash-4.3-patched/parse.y"
3165 { (yyval.command) = (yyvsp[(1) - (1)].command); }
3166 break;
3167
3168 case 144:
3169 #line 1118 "/usr/src/local/bash/bash-4.3-patched/parse.y"
3170 { (yyval.number) = '\n'; }
3171 break;
3172
3173 case 145:
3174 #line 1120 "/usr/src/local/bash/bash-4.3-patched/parse.y"
3175 { (yyval.number) = ';'; }
3176 break;
3177
3178 case 146:
3179 #line 1122 "/usr/src/local/bash/bash-4.3-patched/parse.y"
3180 { (yyval.number) = yacc_EOF; }
3181 break;
3182
3183 case 149:
3184 #line 1136 "/usr/src/local/bash/bash-4.3-patched/parse.y"
3185 {
3186 (yyval.command) = (yyvsp[(1) - (1)].command);
3187 if (need_here_doc)
3188 gather_here_documents ();
3189 if ((parser_state & PST_CMDSUBST) && current_token == shell_eof_token)
3190 {
3191 global_command = (yyvsp[(1) - (1)].command);
3192 eof_encountered = 0;
3193 rewind_input_string ();
3194 YYACCEPT;
3195 }
3196 }
3197 break;
3198
3199 case 150:
3200 #line 1149 "/usr/src/local/bash/bash-4.3-patched/parse.y"
3201 {
3202 if ((yyvsp[(1) - (2)].command)->type == cm_connection)
3203 (yyval.command) = connect_async_list ((yyvsp[(1) - (2)].command), (COMMAND *)NULL, '&');
3204 else
3205 (yyval.command) = command_connect ((yyvsp[(1) - (2)].command), (COMMAND *)NULL, '&');
3206 if (need_here_doc)
3207 gather_here_documents ();
3208 if ((parser_state & PST_CMDSUBST) && current_token == shell_eof_token)
3209 {
3210 global_command = (yyvsp[(1) - (2)].command);
3211 eof_encountered = 0;
3212 rewind_input_string ();
3213 YYACCEPT;
3214 }
3215 }
3216 break;
3217
3218 case 151:
3219 #line 1165 "/usr/src/local/bash/bash-4.3-patched/parse.y"
3220 {
3221 (yyval.command) = (yyvsp[(1) - (2)].command);
3222 if (need_here_doc)
3223 gather_here_documents ();
3224 if ((parser_state & PST_CMDSUBST) && current_token == shell_eof_token)
3225 {
3226 global_command = (yyvsp[(1) - (2)].command);
3227 eof_encountered = 0;
3228 rewind_input_string ();
3229 YYACCEPT;
3230 }
3231 }
3232 break;
3233
3234 case 152:
3235 #line 1180 "/usr/src/local/bash/bash-4.3-patched/parse.y"
3236 { (yyval.command) = command_connect ((yyvsp[(1) - (4)].command), (yyvsp[(4) - (4)].command), AND_AND); }
3237 break;
3238
3239 case 153:
3240 #line 1182 "/usr/src/local/bash/bash-4.3-patched/parse.y"
3241 { (yyval.command) = command_connect ((yyvsp[(1) - (4)].command), (yyvsp[(4) - (4)].command), OR_OR); }
3242 break;
3243
3244 case 154:
3245 #line 1184 "/usr/src/local/bash/bash-4.3-patched/parse.y"
3246 {
3247 if ((yyvsp[(1) - (3)].command)->type == cm_connection)
3248 (yyval.command) = connect_async_list ((yyvsp[(1) - (3)].command), (yyvsp[(3) - (3)].command), '&');
3249 else
3250 (yyval.command) = command_connect ((yyvsp[(1) - (3)].command), (yyvsp[(3) - (3)].command), '&');
3251 }
3252 break;
3253
3254 case 155:
3255 #line 1191 "/usr/src/local/bash/bash-4.3-patched/parse.y"
3256 { (yyval.command) = command_connect ((yyvsp[(1) - (3)].command), (yyvsp[(3) - (3)].command), ';'); }
3257 break;
3258
3259 case 156:
3260 #line 1194 "/usr/src/local/bash/bash-4.3-patched/parse.y"
3261 { (yyval.command) = (yyvsp[(1) - (1)].command); }
3262 break;
3263
3264 case 157:
3265 #line 1198 "/usr/src/local/bash/bash-4.3-patched/parse.y"
3266 { (yyval.command) = (yyvsp[(1) - (1)].command); }
3267 break;
3268
3269 case 158:
3270 #line 1200 "/usr/src/local/bash/bash-4.3-patched/parse.y"
3271 {
3272 if ((yyvsp[(2) - (2)].command))
3273 (yyvsp[(2) - (2)].command)->flags ^= CMD_INVERT_RETURN; /* toggle */
3274 (yyval.command) = (yyvsp[(2) - (2)].command);
3275 }
3276 break;
3277
3278 case 159:
3279 #line 1206 "/usr/src/local/bash/bash-4.3-patched/parse.y"
3280 {
3281 if ((yyvsp[(2) - (2)].command))
3282 (yyvsp[(2) - (2)].command)->flags |= (yyvsp[(1) - (2)].number);
3283 (yyval.command) = (yyvsp[(2) - (2)].command);
3284 }
3285 break;
3286
3287 case 160:
3288 #line 1212 "/usr/src/local/bash/bash-4.3-patched/parse.y"
3289 {
3290 ELEMENT x;
3291
3292 /* Boy, this is unclean. `time' by itself can
3293 time a null command. We cheat and push a
3294 newline back if the list_terminator was a newline
3295 to avoid the double-newline problem (one to
3296 terminate this, one to terminate the command) */
3297 x.word = 0;
3298 x.redirect = 0;
3299 (yyval.command) = make_simple_command (x, (COMMAND *)NULL);
3300 (yyval.command)->flags |= (yyvsp[(1) - (2)].number);
3301 /* XXX - let's cheat and push a newline back */
3302 if ((yyvsp[(2) - (2)].number) == '\n')
3303 token_to_read = '\n';
3304 }
3305 break;
3306
3307 case 161:
3308 #line 1229 "/usr/src/local/bash/bash-4.3-patched/parse.y"
3309 {
3310 ELEMENT x;
3311
3312 /* This is just as unclean. Posix says that `!'
3313 by itself should be equivalent to `false'.
3314 We cheat and push a
3315 newline back if the list_terminator was a newline
3316 to avoid the double-newline problem (one to
3317 terminate this, one to terminate the command) */
3318 x.word = 0;
3319 x.redirect = 0;
3320 (yyval.command) = make_simple_command (x, (COMMAND *)NULL);
3321 (yyval.command)->flags |= CMD_INVERT_RETURN;
3322 /* XXX - let's cheat and push a newline back */
3323 if ((yyvsp[(2) - (2)].number) == '\n')
3324 token_to_read = '\n';
3325 }
3326 break;
3327
3328 case 162:
3329 #line 1249 "/usr/src/local/bash/bash-4.3-patched/parse.y"
3330 { (yyval.command) = command_connect ((yyvsp[(1) - (4)].command), (yyvsp[(4) - (4)].command), '|'); }
3331 break;
3332
3333 case 163:
3334 #line 1251 "/usr/src/local/bash/bash-4.3-patched/parse.y"
3335 {
3336 /* Make cmd1 |& cmd2 equivalent to cmd1 2>&1 | cmd2 */
3337 COMMAND *tc;
3338 REDIRECTEE rd, sd;
3339 REDIRECT *r;
3340
3341 tc = (yyvsp[(1) - (4)].command)->type == cm_simple ? (COMMAND *)(yyvsp[(1) - (4)].command)->value.Simple : (yyvsp[(1) - (4)].command);
3342 sd.dest = 2;
3343 rd.dest = 1;
3344 r = make_redirection (sd, r_duplicating_output, rd, 0);
3345 if (tc->redirects)
3346 {
3347 register REDIRECT *t;
3348 for (t = tc->redirects; t->next; t = t->next)
3349 ;
3350 t->next = r;
3351 }
3352 else
3353 tc->redirects = r;
3354
3355 (yyval.command) = command_connect ((yyvsp[(1) - (4)].command), (yyvsp[(4) - (4)].command), '|');
3356 }
3357 break;
3358
3359 case 164:
3360 #line 1274 "/usr/src/local/bash/bash-4.3-patched/parse.y"
3361 { (yyval.command) = (yyvsp[(1) - (1)].command); }
3362 break;
3363
3364 case 165:
3365 #line 1278 "/usr/src/local/bash/bash-4.3-patched/parse.y"
3366 { (yyval.number) = CMD_TIME_PIPELINE; }
3367 break;
3368
3369 case 166:
3370 #line 1280 "/usr/src/local/bash/bash-4.3-patched/parse.y"
3371 { (yyval.number) = CMD_TIME_PIPELINE|CMD_TIME_POSIX; }
3372 break;
3373
3374 case 167:
3375 #line 1282 "/usr/src/local/bash/bash-4.3-patched/parse.y"
3376 { (yyval.number) = CMD_TIME_PIPELINE|CMD_TIME_POSIX; }
3377 break;
3378
3379
3380 /* Line 1267 of yacc.c. */
3381 #line 3382 "y.tab.c"
3382 default: break;
3383 }
3384 YY_SYMBOL_PRINT ("-> $$ =", yyr1[yyn], &yyval, &yyloc);
3385
3386 YYPOPSTACK (yylen);
3387 yylen = 0;
3388 YY_STACK_PRINT (yyss, yyssp);
3389
3390 *++yyvsp = yyval;
3391
3392
3393 /* Now `shift' the result of the reduction. Determine what state
3394 that goes to, based on the state we popped back to and the rule
3395 number reduced by. */
3396
3397 yyn = yyr1[yyn];
3398
3399 yystate = yypgoto[yyn - YYNTOKENS] + *yyssp;
3400 if (0 <= yystate && yystate <= YYLAST && yycheck[yystate] == *yyssp)
3401 yystate = yytable[yystate];
3402 else
3403 yystate = yydefgoto[yyn - YYNTOKENS];
3404
3405 goto yynewstate;
3406
3407
3408 /*------------------------------------.
3409 | yyerrlab -- here on detecting error |
3410 `------------------------------------*/
3411 yyerrlab:
3412 /* If not already recovering from an error, report this error. */
3413 if (!yyerrstatus)
3414 {
3415 ++yynerrs;
3416 #if ! YYERROR_VERBOSE
3417 yyerror (YY_("syntax error"));
3418 #else
3419 {
3420 YYSIZE_T yysize = yysyntax_error (0, yystate, yychar);
3421 if (yymsg_alloc < yysize && yymsg_alloc < YYSTACK_ALLOC_MAXIMUM)
3422 {
3423 YYSIZE_T yyalloc = 2 * yysize;
3424 if (! (yysize <= yyalloc && yyalloc <= YYSTACK_ALLOC_MAXIMUM))
3425 yyalloc = YYSTACK_ALLOC_MAXIMUM;
3426 if (yymsg != yymsgbuf)
3427 YYSTACK_FREE (yymsg);
3428 yymsg = (char *) YYSTACK_ALLOC (yyalloc);
3429 if (yymsg)
3430 yymsg_alloc = yyalloc;
3431 else
3432 {
3433 yymsg = yymsgbuf;
3434 yymsg_alloc = sizeof yymsgbuf;
3435 }
3436 }
3437
3438 if (0 < yysize && yysize <= yymsg_alloc)
3439 {
3440 (void) yysyntax_error (yymsg, yystate, yychar);
3441 yyerror (yymsg);
3442 }
3443 else
3444 {
3445 yyerror (YY_("syntax error"));
3446 if (yysize != 0)
3447 goto yyexhaustedlab;
3448 }
3449 }
3450 #endif
3451 }
3452
3453
3454
3455 if (yyerrstatus == 3)
3456 {
3457 /* If just tried and failed to reuse look-ahead token after an
3458 error, discard it. */
3459
3460 if (yychar <= YYEOF)
3461 {
3462 /* Return failure if at end of input. */
3463 if (yychar == YYEOF)
3464 YYABORT;
3465 }
3466 else
3467 {
3468 yydestruct ("Error: discarding",
3469 yytoken, &yylval);
3470 yychar = YYEMPTY;
3471 }
3472 }
3473
3474 /* Else will try to reuse look-ahead token after shifting the error
3475 token. */
3476 goto yyerrlab1;
3477
3478
3479 /*---------------------------------------------------.
3480 | yyerrorlab -- error raised explicitly by YYERROR. |
3481 `---------------------------------------------------*/
3482 yyerrorlab:
3483
3484 /* Pacify compilers like GCC when the user code never invokes
3485 YYERROR and the label yyerrorlab therefore never appears in user
3486 code. */
3487 if (/*CONSTCOND*/ 0)
3488 goto yyerrorlab;
3489
3490 /* Do not reclaim the symbols of the rule which action triggered
3491 this YYERROR. */
3492 YYPOPSTACK (yylen);
3493 yylen = 0;
3494 YY_STACK_PRINT (yyss, yyssp);
3495 yystate = *yyssp;
3496 goto yyerrlab1;
3497
3498
3499 /*-------------------------------------------------------------.
3500 | yyerrlab1 -- common code for both syntax error and YYERROR. |
3501 `-------------------------------------------------------------*/
3502 yyerrlab1:
3503 yyerrstatus = 3; /* Each real token shifted decrements this. */
3504
3505 for (;;)
3506 {
3507 yyn = yypact[yystate];
3508 if (yyn != YYPACT_NINF)
3509 {
3510 yyn += YYTERROR;
3511 if (0 <= yyn && yyn <= YYLAST && yycheck[yyn] == YYTERROR)
3512 {
3513 yyn = yytable[yyn];
3514 if (0 < yyn)
3515 break;
3516 }
3517 }
3518
3519 /* Pop the current state because it cannot handle the error token. */
3520 if (yyssp == yyss)
3521 YYABORT;
3522
3523
3524 yydestruct ("Error: popping",
3525 yystos[yystate], yyvsp);
3526 YYPOPSTACK (1);
3527 yystate = *yyssp;
3528 YY_STACK_PRINT (yyss, yyssp);
3529 }
3530
3531 if (yyn == YYFINAL)
3532 YYACCEPT;
3533
3534 *++yyvsp = yylval;
3535
3536
3537 /* Shift the error token. */
3538 YY_SYMBOL_PRINT ("Shifting", yystos[yyn], yyvsp, yylsp);
3539
3540 yystate = yyn;
3541 goto yynewstate;
3542
3543
3544 /*-------------------------------------.
3545 | yyacceptlab -- YYACCEPT comes here. |
3546 `-------------------------------------*/
3547 yyacceptlab:
3548 yyresult = 0;
3549 goto yyreturn;
3550
3551 /*-----------------------------------.
3552 | yyabortlab -- YYABORT comes here. |
3553 `-----------------------------------*/
3554 yyabortlab:
3555 yyresult = 1;
3556 goto yyreturn;
3557
3558 #ifndef yyoverflow
3559 /*-------------------------------------------------.
3560 | yyexhaustedlab -- memory exhaustion comes here. |
3561 `-------------------------------------------------*/
3562 yyexhaustedlab:
3563 yyerror (YY_("memory exhausted"));
3564 yyresult = 2;
3565 /* Fall through. */
3566 #endif
3567
3568 yyreturn:
3569 if (yychar != YYEOF && yychar != YYEMPTY)
3570 yydestruct ("Cleanup: discarding lookahead",
3571 yytoken, &yylval);
3572 /* Do not reclaim the symbols of the rule which action triggered
3573 this YYABORT or YYACCEPT. */
3574 YYPOPSTACK (yylen);
3575 YY_STACK_PRINT (yyss, yyssp);
3576 while (yyssp != yyss)
3577 {
3578 yydestruct ("Cleanup: popping",
3579 yystos[*yyssp], yyvsp);
3580 YYPOPSTACK (1);
3581 }
3582 #ifndef yyoverflow
3583 if (yyss != yyssa)
3584 YYSTACK_FREE (yyss);
3585 #endif
3586 #if YYERROR_VERBOSE
3587 if (yymsg != yymsgbuf)
3588 YYSTACK_FREE (yymsg);
3589 #endif
3590 /* Make sure YYID is used. */
3591 return YYID (yyresult);
3592 }
3593
3594
3595 #line 1284 "/usr/src/local/bash/bash-4.3-patched/parse.y"
3596
3597
3598 /* Initial size to allocate for tokens, and the
3599 amount to grow them by. */
3600 #define TOKEN_DEFAULT_INITIAL_SIZE 496
3601 #define TOKEN_DEFAULT_GROW_SIZE 512
3602
3603 /* Should we call prompt_again? */
3604 #define SHOULD_PROMPT() \
3605 (interactive && (bash_input.type == st_stdin || bash_input.type == st_stream))
3606
3607 #if defined (ALIAS)
3608 # define expanding_alias() (pushed_string_list && pushed_string_list->expander)
3609 #else
3610 # define expanding_alias() 0
3611 #endif
3612
3613 /* Global var is non-zero when end of file has been reached. */
3614 int EOF_Reached = 0;
3615
3616 #ifdef DEBUG
3617 static void
3618 debug_parser (i)
3619 int i;
3620 {
3621 #if YYDEBUG != 0
3622 yydebug = i;
3623 #endif
3624 }
3625 #endif
3626
3627 /* yy_getc () returns the next available character from input or EOF.
3628 yy_ungetc (c) makes `c' the next character to read.
3629 init_yy_io (get, unget, type, location) makes the function GET the
3630 installed function for getting the next character, makes UNGET the
3631 installed function for un-getting a character, sets the type of stream
3632 (either string or file) from TYPE, and makes LOCATION point to where
3633 the input is coming from. */
3634
3635 /* Unconditionally returns end-of-file. */
3636 int
3637 return_EOF ()
3638 {
3639 return (EOF);
3640 }
3641
3642 /* Variable containing the current get and unget functions.
3643 See ./input.h for a clearer description. */
3644 BASH_INPUT bash_input;
3645
3646 /* Set all of the fields in BASH_INPUT to NULL. Free bash_input.name if it
3647 is non-null, avoiding a memory leak. */
3648 void
3649 initialize_bash_input ()
3650 {
3651 bash_input.type = st_none;
3652 FREE (bash_input.name);
3653 bash_input.name = (char *)NULL;
3654 bash_input.location.file = (FILE *)NULL;
3655 bash_input.location.string = (char *)NULL;
3656 bash_input.getter = (sh_cget_func_t *)NULL;
3657 bash_input.ungetter = (sh_cunget_func_t *)NULL;
3658 }
3659
3660 /* Set the contents of the current bash input stream from
3661 GET, UNGET, TYPE, NAME, and LOCATION. */
3662 void
3663 init_yy_io (get, unget, type, name, location)
3664 sh_cget_func_t *get;
3665 sh_cunget_func_t *unget;
3666 enum stream_type type;
3667 const char *name;
3668 INPUT_STREAM location;
3669 {
3670 bash_input.type = type;
3671 FREE (bash_input.name);
3672 bash_input.name = name ? savestring (name) : (char *)NULL;
3673
3674 /* XXX */
3675 #if defined (CRAY)
3676 memcpy((char *)&bash_input.location.string, (char *)&location.string, sizeof(location));
3677 #else
3678 bash_input.location = location;
3679 #endif
3680 bash_input.getter = get;
3681 bash_input.ungetter = unget;
3682 }
3683
3684 char *
3685 yy_input_name ()
3686 {
3687 return (bash_input.name ? bash_input.name : "stdin");
3688 }
3689
3690 /* Call this to get the next character of input. */
3691 static int
3692 yy_getc ()
3693 {
3694 return (*(bash_input.getter)) ();
3695 }
3696
3697 /* Call this to unget C. That is, to make C the next character
3698 to be read. */
3699 static int
3700 yy_ungetc (c)
3701 int c;
3702 {
3703 return (*(bash_input.ungetter)) (c);
3704 }
3705
3706 #if defined (BUFFERED_INPUT)
3707 #ifdef INCLUDE_UNUSED
3708 int
3709 input_file_descriptor ()
3710 {
3711 switch (bash_input.type)
3712 {
3713 case st_stream:
3714 return (fileno (bash_input.location.file));
3715 case st_bstream:
3716 return (bash_input.location.buffered_fd);
3717 case st_stdin:
3718 default:
3719 return (fileno (stdin));
3720 }
3721 }
3722 #endif
3723 #endif /* BUFFERED_INPUT */
3724
3725 /* **************************************************************** */
3726 /* */
3727 /* Let input be read from readline (). */
3728 /* */
3729 /* **************************************************************** */
3730
3731 #if defined (READLINE)
3732 char *current_readline_prompt = (char *)NULL;
3733 char *current_readline_line = (char *)NULL;
3734 int current_readline_line_index = 0;
3735
3736 static int
3737 yy_readline_get ()
3738 {
3739 SigHandler *old_sigint;
3740 int line_len;
3741 unsigned char c;
3742
3743 if (!current_readline_line)
3744 {
3745 if (!bash_readline_initialized)
3746 initialize_readline ();
3747
3748 #if defined (JOB_CONTROL)
3749 if (job_control)
3750 give_terminal_to (shell_pgrp, 0);
3751 #endif /* JOB_CONTROL */
3752
3753 old_sigint = (SigHandler *)IMPOSSIBLE_TRAP_HANDLER;
3754 if (signal_is_ignored (SIGINT) == 0)
3755 {
3756 /* interrupt_immediately++; */
3757 old_sigint = (SigHandler *)set_signal_handler (SIGINT, sigint_sighandler);
3758 }
3759
3760 current_readline_line = readline (current_readline_prompt ?
3761 current_readline_prompt : "");
3762
3763 CHECK_TERMSIG;
3764 if (signal_is_ignored (SIGINT) == 0)
3765 {
3766 /* interrupt_immediately--; */
3767 if (old_sigint != IMPOSSIBLE_TRAP_HANDLER)
3768 set_signal_handler (SIGINT, old_sigint);
3769 }
3770
3771 #if 0
3772 /* Reset the prompt to the decoded value of prompt_string_pointer. */
3773 reset_readline_prompt ();
3774 #endif
3775
3776 if (current_readline_line == 0)
3777 return (EOF);
3778
3779 current_readline_line_index = 0;
3780 line_len = strlen (current_readline_line);
3781
3782 current_readline_line = (char *)xrealloc (current_readline_line, 2 + line_len);
3783 current_readline_line[line_len++] = '\n';
3784 current_readline_line[line_len] = '\0';
3785 }
3786
3787 if (current_readline_line[current_readline_line_index] == 0)
3788 {
3789 free (current_readline_line);
3790 current_readline_line = (char *)NULL;
3791 return (yy_readline_get ());
3792 }
3793 else
3794 {
3795 c = current_readline_line[current_readline_line_index++];
3796 return (c);
3797 }
3798 }
3799
3800 static int
3801 yy_readline_unget (c)
3802 int c;
3803 {
3804 if (current_readline_line_index && current_readline_line)
3805 current_readline_line[--current_readline_line_index] = c;
3806 return (c);
3807 }
3808
3809 void
3810 with_input_from_stdin ()
3811 {
3812 INPUT_STREAM location;
3813
3814 if (bash_input.type != st_stdin && stream_on_stack (st_stdin) == 0)
3815 {
3816 location.string = current_readline_line;
3817 init_yy_io (yy_readline_get, yy_readline_unget,
3818 st_stdin, "readline stdin", location);
3819 }
3820 }
3821
3822 #else /* !READLINE */
3823
3824 void
3825 with_input_from_stdin ()
3826 {
3827 with_input_from_stream (stdin, "stdin");
3828 }
3829 #endif /* !READLINE */
3830
3831 /* **************************************************************** */
3832 /* */
3833 /* Let input come from STRING. STRING is zero terminated. */
3834 /* */
3835 /* **************************************************************** */
3836
3837 static int
3838 yy_string_get ()
3839 {
3840 register char *string;
3841 register unsigned char c;
3842
3843 string = bash_input.location.string;
3844
3845 /* If the string doesn't exist, or is empty, EOF found. */
3846 if (string && *string)
3847 {
3848 c = *string++;
3849 bash_input.location.string = string;
3850 return (c);
3851 }
3852 else
3853 return (EOF);
3854 }
3855
3856 static int
3857 yy_string_unget (c)
3858 int c;
3859 {
3860 *(--bash_input.location.string) = c;
3861 return (c);
3862 }
3863
3864 void
3865 with_input_from_string (string, name)
3866 char *string;
3867 const char *name;
3868 {
3869 INPUT_STREAM location;
3870
3871 location.string = string;
3872 init_yy_io (yy_string_get, yy_string_unget, st_string, name, location);
3873 }
3874
3875 /* Count the number of characters we've consumed from bash_input.location.string
3876 and read into shell_input_line, but have not returned from shell_getc.
3877 That is the true input location. Rewind bash_input.location.string by
3878 that number of characters, so it points to the last character actually
3879 consumed by the parser. */
3880 static void
3881 rewind_input_string ()
3882 {
3883 int xchars;
3884
3885 /* number of unconsumed characters in the input -- XXX need to take newlines
3886 into account, e.g., $(...\n) */
3887 xchars = shell_input_line_len - shell_input_line_index;
3888 if (bash_input.location.string[-1] == '\n')
3889 xchars++;
3890
3891 /* XXX - how to reflect bash_input.location.string back to string passed to
3892 parse_and_execute or xparse_dolparen? xparse_dolparen needs to know how
3893 far into the string we parsed. parse_and_execute knows where bash_input.
3894 location.string is, and how far from orig_string that is -- that's the
3895 number of characters the command consumed. */
3896
3897 /* bash_input.location.string - xchars should be where we parsed to */
3898 /* need to do more validation on xchars value for sanity -- test cases. */
3899 bash_input.location.string -= xchars;
3900 }
3901
3902 /* **************************************************************** */
3903 /* */
3904 /* Let input come from STREAM. */
3905 /* */
3906 /* **************************************************************** */
3907
3908 /* These two functions used to test the value of the HAVE_RESTARTABLE_SYSCALLS
3909 define, and just use getc/ungetc if it was defined, but since bash
3910 installs its signal handlers without the SA_RESTART flag, some signals
3911 (like SIGCHLD, SIGWINCH, etc.) received during a read(2) will not cause
3912 the read to be restarted. We need to restart it ourselves. */
3913
3914 static int
3915 yy_stream_get ()
3916 {
3917 int result;
3918
3919 result = EOF;
3920 if (bash_input.location.file)
3921 {
3922 #if 0
3923 if (interactive)
3924 interrupt_immediately++;
3925 #endif
3926
3927 /* XXX - don't need terminate_immediately; getc_with_restart checks
3928 for terminating signals itself if read returns < 0 */
3929 result = getc_with_restart (bash_input.location.file);
3930
3931 #if 0
3932 if (interactive)
3933 interrupt_immediately--;
3934 #endif
3935 }
3936 return (result);
3937 }
3938
3939 static int
3940 yy_stream_unget (c)
3941 int c;
3942 {
3943 return (ungetc_with_restart (c, bash_input.location.file));
3944 }
3945
3946 void
3947 with_input_from_stream (stream, name)
3948 FILE *stream;
3949 const char *name;
3950 {
3951 INPUT_STREAM location;
3952
3953 location.file = stream;
3954 init_yy_io (yy_stream_get, yy_stream_unget, st_stream, name, location);
3955 }
3956
3957 typedef struct stream_saver {
3958 struct stream_saver *next;
3959 BASH_INPUT bash_input;
3960 int line;
3961 #if defined (BUFFERED_INPUT)
3962 BUFFERED_STREAM *bstream;
3963 #endif /* BUFFERED_INPUT */
3964 } STREAM_SAVER;
3965
3966 /* The globally known line number. */
3967 int line_number = 0;
3968
3969 /* The line number offset set by assigning to LINENO. Not currently used. */
3970 int line_number_base = 0;
3971
3972 #if defined (COND_COMMAND)
3973 static int cond_lineno;
3974 static int cond_token;
3975 #endif
3976
3977 STREAM_SAVER *stream_list = (STREAM_SAVER *)NULL;
3978
3979 void
3980 push_stream (reset_lineno)
3981 int reset_lineno;
3982 {
3983 STREAM_SAVER *saver = (STREAM_SAVER *)xmalloc (sizeof (STREAM_SAVER));
3984
3985 xbcopy ((char *)&bash_input, (char *)&(saver->bash_input), sizeof (BASH_INPUT));
3986
3987 #if defined (BUFFERED_INPUT)
3988 saver->bstream = (BUFFERED_STREAM *)NULL;
3989 /* If we have a buffered stream, clear out buffers[fd]. */
3990 if (bash_input.type == st_bstream && bash_input.location.buffered_fd >= 0)
3991 saver->bstream = set_buffered_stream (bash_input.location.buffered_fd,
3992 (BUFFERED_STREAM *)NULL);
3993 #endif /* BUFFERED_INPUT */
3994
3995 saver->line = line_number;
3996 bash_input.name = (char *)NULL;
3997 saver->next = stream_list;
3998 stream_list = saver;
3999 EOF_Reached = 0;
4000 if (reset_lineno)
4001 line_number = 0;
4002 }
4003
4004 void
4005 pop_stream ()
4006 {
4007 if (!stream_list)
4008 EOF_Reached = 1;
4009 else
4010 {
4011 STREAM_SAVER *saver = stream_list;
4012
4013 EOF_Reached = 0;
4014 stream_list = stream_list->next;
4015
4016 init_yy_io (saver->bash_input.getter,
4017 saver->bash_input.ungetter,
4018 saver->bash_input.type,
4019 saver->bash_input.name,
4020 saver->bash_input.location);
4021
4022 #if defined (BUFFERED_INPUT)
4023 /* If we have a buffered stream, restore buffers[fd]. */
4024 /* If the input file descriptor was changed while this was on the
4025 save stack, update the buffered fd to the new file descriptor and
4026 re-establish the buffer <-> bash_input fd correspondence. */
4027 if (bash_input.type == st_bstream && bash_input.location.buffered_fd >= 0)
4028 {
4029 if (bash_input_fd_changed)
4030 {
4031 bash_input_fd_changed = 0;
4032 if (default_buffered_input >= 0)
4033 {
4034 bash_input.location.buffered_fd = default_buffered_input;
4035 saver->bstream->b_fd = default_buffered_input;
4036 SET_CLOSE_ON_EXEC (default_buffered_input);
4037 }
4038 }
4039 /* XXX could free buffered stream returned as result here. */
4040 set_buffered_stream (bash_input.location.buffered_fd, saver->bstream);
4041 }
4042 #endif /* BUFFERED_INPUT */
4043
4044 line_number = saver->line;
4045
4046 FREE (saver->bash_input.name);
4047 free (saver);
4048 }
4049 }
4050
4051 /* Return 1 if a stream of type TYPE is saved on the stack. */
4052 int
4053 stream_on_stack (type)
4054 enum stream_type type;
4055 {
4056 register STREAM_SAVER *s;
4057
4058 for (s = stream_list; s; s = s->next)
4059 if (s->bash_input.type == type)
4060 return 1;
4061 return 0;
4062 }
4063
4064 /* Save the current token state and return it in a malloced array. */
4065 int *
4066 save_token_state ()
4067 {
4068 int *ret;
4069
4070 ret = (int *)xmalloc (4 * sizeof (int));
4071 ret[0] = last_read_token;
4072 ret[1] = token_before_that;
4073 ret[2] = two_tokens_ago;
4074 ret[3] = current_token;
4075 return ret;
4076 }
4077
4078 void
4079 restore_token_state (ts)
4080 int *ts;
4081 {
4082 if (ts == 0)
4083 return;
4084 last_read_token = ts[0];
4085 token_before_that = ts[1];
4086 two_tokens_ago = ts[2];
4087 current_token = ts[3];
4088 }
4089
4090 /*
4091 * This is used to inhibit alias expansion and reserved word recognition
4092 * inside case statement pattern lists. A `case statement pattern list' is:
4093 *
4094 * everything between the `in' in a `case word in' and the next ')'
4095 * or `esac'
4096 * everything between a `;;' and the next `)' or `esac'
4097 */
4098
4099 #if defined (ALIAS) || defined (DPAREN_ARITHMETIC)
4100
4101 #define END_OF_ALIAS 0
4102
4103 /*
4104 * Pseudo-global variables used in implementing token-wise alias expansion.
4105 */
4106
4107 /*
4108 * Pushing and popping strings. This works together with shell_getc to
4109 * implement alias expansion on a per-token basis.
4110 */
4111
4112 #define PSH_ALIAS 0x01
4113 #define PSH_DPAREN 0x02
4114 #define PSH_SOURCE 0x04
4115
4116 typedef struct string_saver {
4117 struct string_saver *next;
4118 int expand_alias; /* Value to set expand_alias to when string is popped. */
4119 char *saved_line;
4120 #if defined (ALIAS)
4121 alias_t *expander; /* alias that caused this line to be pushed. */
4122 #endif
4123 size_t saved_line_size, saved_line_index;
4124 int saved_line_terminator;
4125 int flags;
4126 } STRING_SAVER;
4127
4128 STRING_SAVER *pushed_string_list = (STRING_SAVER *)NULL;
4129
4130 /*
4131 * Push the current shell_input_line onto a stack of such lines and make S
4132 * the current input. Used when expanding aliases. EXPAND is used to set
4133 * the value of expand_next_token when the string is popped, so that the
4134 * word after the alias in the original line is handled correctly when the
4135 * alias expands to multiple words. TOKEN is the token that was expanded
4136 * into S; it is saved and used to prevent infinite recursive expansion.
4137 */
4138 static void
4139 push_string (s, expand, ap)
4140 char *s;
4141 int expand;
4142 alias_t *ap;
4143 {
4144 STRING_SAVER *temp = (STRING_SAVER *)xmalloc (sizeof (STRING_SAVER));
4145
4146 temp->expand_alias = expand;
4147 temp->saved_line = shell_input_line;
4148 temp->saved_line_size = shell_input_line_size;
4149 temp->saved_line_index = shell_input_line_index;
4150 temp->saved_line_terminator = shell_input_line_terminator;
4151 temp->flags = 0;
4152 #if defined (ALIAS)
4153 temp->expander = ap;
4154 if (ap)
4155 temp->flags = PSH_ALIAS;
4156 #endif
4157 temp->next = pushed_string_list;
4158 pushed_string_list = temp;
4159
4160 #if defined (ALIAS)
4161 if (ap)
4162 ap->flags |= AL_BEINGEXPANDED;
4163 #endif
4164
4165 shell_input_line = s;
4166 shell_input_line_size = STRLEN (s);
4167 shell_input_line_index = 0;
4168 shell_input_line_terminator = '\0';
4169 #if 0
4170 parser_state &= ~PST_ALEXPNEXT; /* XXX */
4171 #endif
4172
4173 set_line_mbstate ();
4174 }
4175
4176 /*
4177 * Make the top of the pushed_string stack be the current shell input.
4178 * Only called when there is something on the stack. Called from shell_getc
4179 * when it thinks it has consumed the string generated by an alias expansion
4180 * and needs to return to the original input line.
4181 */
4182 static void
4183 pop_string ()
4184 {
4185 STRING_SAVER *t;
4186
4187 FREE (shell_input_line);
4188 shell_input_line = pushed_string_list->saved_line;
4189 shell_input_line_index = pushed_string_list->saved_line_index;
4190 shell_input_line_size = pushed_string_list->saved_line_size;
4191 shell_input_line_terminator = pushed_string_list->saved_line_terminator;
4192
4193 if (pushed_string_list->expand_alias)
4194 parser_state |= PST_ALEXPNEXT;
4195 else
4196 parser_state &= ~PST_ALEXPNEXT;
4197
4198 t = pushed_string_list;
4199 pushed_string_list = pushed_string_list->next;
4200
4201 #if defined (ALIAS)
4202 if (t->expander)
4203 t->expander->flags &= ~AL_BEINGEXPANDED;
4204 #endif
4205
4206 free ((char *)t);
4207
4208 set_line_mbstate ();
4209 }
4210
4211 static void
4212 free_string_list ()
4213 {
4214 register STRING_SAVER *t, *t1;
4215
4216 for (t = pushed_string_list; t; )
4217 {
4218 t1 = t->next;
4219 FREE (t->saved_line);
4220 #if defined (ALIAS)
4221 if (t->expander)
4222 t->expander->flags &= ~AL_BEINGEXPANDED;
4223 #endif
4224 free ((char *)t);
4225 t = t1;
4226 }
4227 pushed_string_list = (STRING_SAVER *)NULL;
4228 }
4229
4230 #endif /* ALIAS || DPAREN_ARITHMETIC */
4231
4232 void
4233 free_pushed_string_input ()
4234 {
4235 #if defined (ALIAS) || defined (DPAREN_ARITHMETIC)
4236 free_string_list ();
4237 #endif
4238 }
4239
4240 int
4241 parser_expanding_alias ()
4242 {
4243 return (expanding_alias ());
4244 }
4245
4246 void
4247 parser_save_alias ()
4248 {
4249 #if defined (ALIAS) || defined (DPAREN_ARITHMETIC)
4250 push_string ((char *)NULL, 0, (alias_t *)NULL);
4251 pushed_string_list->flags = PSH_SOURCE; /* XXX - for now */
4252 #else
4253 ;
4254 #endif
4255 }
4256
4257 void
4258 parser_restore_alias ()
4259 {
4260 #if defined (ALIAS) || defined (DPAREN_ARITHMETIC)
4261 if (pushed_string_list)
4262 pop_string ();
4263 #else
4264 ;
4265 #endif
4266 }
4267
4268 /* Return a line of text, taken from wherever yylex () reads input.
4269 If there is no more input, then we return NULL. If REMOVE_QUOTED_NEWLINE
4270 is non-zero, we remove unquoted \<newline> pairs. This is used by
4271 read_secondary_line to read here documents. */
4272 static char *
4273 read_a_line (remove_quoted_newline)
4274 int remove_quoted_newline;
4275 {
4276 static char *line_buffer = (char *)NULL;
4277 static int buffer_size = 0;
4278 int indx, c, peekc, pass_next;
4279
4280 #if defined (READLINE)
4281 if (no_line_editing && SHOULD_PROMPT ())
4282 #else
4283 if (SHOULD_PROMPT ())
4284 #endif
4285 print_prompt ();
4286
4287 pass_next = indx = 0;
4288 while (1)
4289 {
4290 /* Allow immediate exit if interrupted during input. */
4291 QUIT;
4292
4293 c = yy_getc ();
4294
4295 /* Ignore null bytes in input. */
4296 if (c == 0)
4297 {
4298 #if 0
4299 internal_warning ("read_a_line: ignored null byte in input");
4300 #endif
4301 continue;
4302 }
4303
4304 /* If there is no more input, then we return NULL. */
4305 if (c == EOF)
4306 {
4307 if (interactive && bash_input.type == st_stream)
4308 clearerr (stdin);
4309 if (indx == 0)
4310 return ((char *)NULL);
4311 c = '\n';
4312 }
4313
4314 /* `+2' in case the final character in the buffer is a newline. */
4315 RESIZE_MALLOCED_BUFFER (line_buffer, indx, 2, buffer_size, 128);
4316
4317 /* IF REMOVE_QUOTED_NEWLINES is non-zero, we are reading a
4318 here document with an unquoted delimiter. In this case,
4319 the line will be expanded as if it were in double quotes.
4320 We allow a backslash to escape the next character, but we
4321 need to treat the backslash specially only if a backslash
4322 quoting a backslash-newline pair appears in the line. */
4323 if (pass_next)
4324 {
4325 line_buffer[indx++] = c;
4326 pass_next = 0;
4327 }
4328 else if (c == '\\' && remove_quoted_newline)
4329 {
4330 QUIT;
4331 peekc = yy_getc ();
4332 if (peekc == '\n')
4333 {
4334 line_number++;
4335 continue; /* Make the unquoted \<newline> pair disappear. */
4336 }
4337 else
4338 {
4339 yy_ungetc (peekc);
4340 pass_next = 1;
4341 line_buffer[indx++] = c; /* Preserve the backslash. */
4342 }
4343 }
4344 else
4345 line_buffer[indx++] = c;
4346
4347 if (c == '\n')
4348 {
4349 line_buffer[indx] = '\0';
4350 return (line_buffer);
4351 }
4352 }
4353 }
4354
4355 /* Return a line as in read_a_line (), but insure that the prompt is
4356 the secondary prompt. This is used to read the lines of a here
4357 document. REMOVE_QUOTED_NEWLINE is non-zero if we should remove
4358 newlines quoted with backslashes while reading the line. It is
4359 non-zero unless the delimiter of the here document was quoted. */
4360 char *
4361 read_secondary_line (remove_quoted_newline)
4362 int remove_quoted_newline;
4363 {
4364 char *ret;
4365 int n, c;
4366
4367 prompt_string_pointer = &ps2_prompt;
4368 if (SHOULD_PROMPT())
4369 prompt_again ();
4370 ret = read_a_line (remove_quoted_newline);
4371 #if defined (HISTORY)
4372 if (ret && remember_on_history && (parser_state & PST_HEREDOC))
4373 {
4374 /* To make adding the the here-document body right, we need to rely
4375 on history_delimiting_chars() returning \n for the first line of
4376 the here-document body and the null string for the second and
4377 subsequent lines, so we avoid double newlines.
4378 current_command_line_count == 2 for the first line of the body. */
4379
4380 current_command_line_count++;
4381 maybe_add_history (ret);
4382 }
4383 #endif /* HISTORY */
4384 return ret;
4385 }
4386
4387 /* **************************************************************** */
4388 /* */
4389 /* YYLEX () */
4390 /* */
4391 /* **************************************************************** */
4392
4393 /* Reserved words. These are only recognized as the first word of a
4394 command. */
4395 STRING_INT_ALIST word_token_alist[] = {
4396 { "if", IF },
4397 { "then", THEN },
4398 { "else", ELSE },
4399 { "elif", ELIF },
4400 { "fi", FI },
4401 { "case", CASE },
4402 { "esac", ESAC },
4403 { "for", FOR },
4404 #if defined (SELECT_COMMAND)
4405 { "select", SELECT },
4406 #endif
4407 { "while", WHILE },
4408 { "until", UNTIL },
4409 { "do", DO },
4410 { "done", DONE },
4411 { "in", IN },
4412 { "function", FUNCTION },
4413 #if defined (COMMAND_TIMING)
4414 { "time", TIME },
4415 #endif
4416 { "{", '{' },
4417 { "}", '}' },
4418 { "!", BANG },
4419 #if defined (COND_COMMAND)
4420 { "[[", COND_START },
4421 { "]]", COND_END },
4422 #endif
4423 #if defined (COPROCESS_SUPPORT)
4424 { "coproc", COPROC },
4425 #endif
4426 { (char *)NULL, 0}
4427 };
4428
4429 /* other tokens that can be returned by read_token() */
4430 STRING_INT_ALIST other_token_alist[] = {
4431 /* Multiple-character tokens with special values */
4432 { "--", TIMEIGN },
4433 { "-p", TIMEOPT },
4434 { "&&", AND_AND },
4435 { "||", OR_OR },
4436 { ">>", GREATER_GREATER },
4437 { "<<", LESS_LESS },
4438 { "<&", LESS_AND },
4439 { ">&", GREATER_AND },
4440 { ";;", SEMI_SEMI },
4441 { ";&", SEMI_AND },
4442 { ";;&", SEMI_SEMI_AND },
4443 { "<<-", LESS_LESS_MINUS },
4444 { "<<<", LESS_LESS_LESS },
4445 { "&>", AND_GREATER },
4446 { "&>>", AND_GREATER_GREATER },
4447 { "<>", LESS_GREATER },
4448 { ">|", GREATER_BAR },
4449 { "|&", BAR_AND },
4450 { "EOF", yacc_EOF },
4451 /* Tokens whose value is the character itself */
4452 { ">", '>' },
4453 { "<", '<' },
4454 { "-", '-' },
4455 { "{", '{' },
4456 { "}", '}' },
4457 { ";", ';' },
4458 { "(", '(' },
4459 { ")", ')' },
4460 { "|", '|' },
4461 { "&", '&' },
4462 { "newline", '\n' },
4463 { (char *)NULL, 0}
4464 };
4465
4466 /* others not listed here:
4467 WORD look at yylval.word
4468 ASSIGNMENT_WORD look at yylval.word
4469 NUMBER look at yylval.number
4470 ARITH_CMD look at yylval.word_list
4471 ARITH_FOR_EXPRS look at yylval.word_list
4472 COND_CMD look at yylval.command
4473 */
4474
4475 /* These are used by read_token_word, but appear up here so that shell_getc
4476 can use them to decide when to add otherwise blank lines to the history. */
4477
4478 /* The primary delimiter stack. */
4479 struct dstack dstack = { (char *)NULL, 0, 0 };
4480
4481 /* A temporary delimiter stack to be used when decoding prompt strings.
4482 This is needed because command substitutions in prompt strings (e.g., PS2)
4483 can screw up the parser's quoting state. */
4484 static struct dstack temp_dstack = { (char *)NULL, 0, 0 };
4485
4486 /* Macro for accessing the top delimiter on the stack. Returns the
4487 delimiter or zero if none. */
4488 #define current_delimiter(ds) \
4489 (ds.delimiter_depth ? ds.delimiters[ds.delimiter_depth - 1] : 0)
4490
4491 #define push_delimiter(ds, character) \
4492 do \
4493 { \
4494 if (ds.delimiter_depth + 2 > ds.delimiter_space) \
4495 ds.delimiters = (char *)xrealloc \
4496 (ds.delimiters, (ds.delimiter_space += 10) * sizeof (char)); \
4497 ds.delimiters[ds.delimiter_depth] = character; \
4498 ds.delimiter_depth++; \
4499 } \
4500 while (0)
4501
4502 #define pop_delimiter(ds) ds.delimiter_depth--
4503
4504 /* Return the next shell input character. This always reads characters
4505 from shell_input_line; when that line is exhausted, it is time to
4506 read the next line. This is called by read_token when the shell is
4507 processing normal command input. */
4508
4509 /* This implements one-character lookahead/lookbehind across physical input
4510 lines, to avoid something being lost because it's pushed back with
4511 shell_ungetc when we're at the start of a line. */
4512 static int eol_ungetc_lookahead = 0;
4513
4514 static int
4515 shell_getc (remove_quoted_newline)
4516 int remove_quoted_newline;
4517 {
4518 register int i;
4519 int c, truncating;
4520 unsigned char uc;
4521
4522 QUIT;
4523
4524 if (sigwinch_received)
4525 {
4526 sigwinch_received = 0;
4527 get_new_window_size (0, (int *)0, (int *)0);
4528 }
4529
4530 if (eol_ungetc_lookahead)
4531 {
4532 c = eol_ungetc_lookahead;
4533 eol_ungetc_lookahead = 0;
4534 return (c);
4535 }
4536
4537 #if defined (ALIAS) || defined (DPAREN_ARITHMETIC)
4538 /* If shell_input_line[shell_input_line_index] == 0, but there is
4539 something on the pushed list of strings, then we don't want to go
4540 off and get another line. We let the code down below handle it. */
4541
4542 if (!shell_input_line || ((!shell_input_line[shell_input_line_index]) &&
4543 (pushed_string_list == (STRING_SAVER *)NULL)))
4544 #else /* !ALIAS && !DPAREN_ARITHMETIC */
4545 if (!shell_input_line || !shell_input_line[shell_input_line_index])
4546 #endif /* !ALIAS && !DPAREN_ARITHMETIC */
4547 {
4548 line_number++;
4549
4550 /* Let's not let one really really long line blow up memory allocation */
4551 if (shell_input_line && shell_input_line_size >= 32768)
4552 {
4553 free (shell_input_line);
4554 shell_input_line = 0;
4555 shell_input_line_size = 0;
4556 }
4557
4558 restart_read:
4559
4560 /* Allow immediate exit if interrupted during input. */
4561 QUIT;
4562
4563 i = truncating = 0;
4564 shell_input_line_terminator = 0;
4565
4566 /* If the shell is interatctive, but not currently printing a prompt
4567 (interactive_shell && interactive == 0), we don't want to print
4568 notifies or cleanup the jobs -- we want to defer it until we do
4569 print the next prompt. */
4570 if (interactive_shell == 0 || SHOULD_PROMPT())
4571 {
4572 #if defined (JOB_CONTROL)
4573 /* This can cause a problem when reading a command as the result
4574 of a trap, when the trap is called from flush_child. This call
4575 had better not cause jobs to disappear from the job table in
4576 that case, or we will have big trouble. */
4577 notify_and_cleanup ();
4578 #else /* !JOB_CONTROL */
4579 cleanup_dead_jobs ();
4580 #endif /* !JOB_CONTROL */
4581 }
4582
4583 #if defined (READLINE)
4584 if (no_line_editing && SHOULD_PROMPT())
4585 #else
4586 if (SHOULD_PROMPT())
4587 #endif
4588 print_prompt ();
4589
4590 if (bash_input.type == st_stream)
4591 clearerr (stdin);
4592
4593 while (1)
4594 {
4595 c = yy_getc ();
4596
4597 /* Allow immediate exit if interrupted during input. */
4598 QUIT;
4599
4600 if (c == '\0')
4601 {
4602 #if 0
4603 internal_warning ("shell_getc: ignored null byte in input");
4604 #endif
4605 continue;
4606 }
4607
4608 /* Theoretical overflow */
4609 /* If we can't put 256 bytes more into the buffer, allocate
4610 everything we can and fill it as full as we can. */
4611 /* XXX - we ignore rest of line using `truncating' flag */
4612 if (shell_input_line_size > (SIZE_MAX - 256))
4613 {
4614 size_t n;
4615
4616 n = SIZE_MAX - i; /* how much more can we put into the buffer? */
4617 if (n <= 2) /* we have to save 1 for the newline added below */
4618 {
4619 if (truncating == 0)
4620 internal_warning("shell_getc: shell_input_line_size (%zu) exceeds SIZE_MAX (%llu): line truncated", shell_input_line_size, SIZE_MAX);
4621 shell_input_line[i] = '\0';
4622 truncating = 1;
4623 }
4624 if (shell_input_line_size < SIZE_MAX)
4625 {
4626 shell_input_line_size = SIZE_MAX;
4627 shell_input_line = xrealloc (shell_input_line, shell_input_line_size);
4628 }
4629 }
4630 else
4631 RESIZE_MALLOCED_BUFFER (shell_input_line, i, 2, shell_input_line_size, 256);
4632
4633 if (c == EOF)
4634 {
4635 if (bash_input.type == st_stream)
4636 clearerr (stdin);
4637
4638 if (i == 0)
4639 shell_input_line_terminator = EOF;
4640
4641 shell_input_line[i] = '\0';
4642 break;
4643 }
4644
4645 if (truncating == 0 || c == '\n')
4646 shell_input_line[i++] = c;
4647
4648 if (c == '\n')
4649 {
4650 shell_input_line[--i] = '\0';
4651 current_command_line_count++;
4652 break;
4653 }
4654 }
4655
4656 shell_input_line_index = 0;
4657 shell_input_line_len = i; /* == strlen (shell_input_line) */
4658
4659 set_line_mbstate ();
4660
4661 #if defined (HISTORY)
4662 if (remember_on_history && shell_input_line && shell_input_line[0])
4663 {
4664 char *expansions;
4665 # if defined (BANG_HISTORY)
4666 int old_hist;
4667
4668 /* If the current delimiter is a single quote, we should not be
4669 performing history expansion, even if we're on a different
4670 line from the original single quote. */
4671 old_hist = history_expansion_inhibited;
4672 if (current_delimiter (dstack) == '\'')
4673 history_expansion_inhibited = 1;
4674 # endif
4675 expansions = pre_process_line (shell_input_line, 1, 1);
4676 # if defined (BANG_HISTORY)
4677 history_expansion_inhibited = old_hist;
4678 # endif
4679 if (expansions != shell_input_line)
4680 {
4681 free (shell_input_line);
4682 shell_input_line = expansions;
4683 shell_input_line_len = shell_input_line ?
4684 strlen (shell_input_line) : 0;
4685 if (shell_input_line_len == 0)
4686 current_command_line_count--;
4687
4688 /* We have to force the xrealloc below because we don't know
4689 the true allocated size of shell_input_line anymore. */
4690 shell_input_line_size = shell_input_line_len;
4691
4692 set_line_mbstate ();
4693 }
4694 }
4695 /* Try to do something intelligent with blank lines encountered while
4696 entering multi-line commands. XXX - this is grotesque */
4697 else if (remember_on_history && shell_input_line &&
4698 shell_input_line[0] == '\0' &&
4699 current_command_line_count > 1)
4700 {
4701 if (current_delimiter (dstack))
4702 /* We know shell_input_line[0] == 0 and we're reading some sort of
4703 quoted string. This means we've got a line consisting of only
4704 a newline in a quoted string. We want to make sure this line
4705 gets added to the history. */
4706 maybe_add_history (shell_input_line);
4707 else
4708 {
4709 char *hdcs;
4710 hdcs = history_delimiting_chars (shell_input_line);
4711 if (hdcs && hdcs[0] == ';')
4712 maybe_add_history (shell_input_line);
4713 }
4714 }
4715
4716 #endif /* HISTORY */
4717
4718 if (shell_input_line)
4719 {
4720 /* Lines that signify the end of the shell's input should not be
4721 echoed. We should not echo lines while parsing command
4722 substitutions with recursive calls into the parsing engine; those
4723 should only be echoed once when we read the word. That is the
4724 reason for the test against shell_eof_token, which is set to a
4725 right paren when parsing the contents of command substitutions. */
4726 if (echo_input_at_read && (shell_input_line[0] ||
4727 shell_input_line_terminator != EOF) &&
4728 shell_eof_token == 0)
4729 fprintf (stderr, "%s\n", shell_input_line);
4730 }
4731 else
4732 {
4733 shell_input_line_size = 0;
4734 prompt_string_pointer = &current_prompt_string;
4735 if (SHOULD_PROMPT ())
4736 prompt_again ();
4737 goto restart_read;
4738 }
4739
4740 /* Add the newline to the end of this string, iff the string does
4741 not already end in an EOF character. */
4742 if (shell_input_line_terminator != EOF)
4743 {
4744 if (shell_input_line_size < SIZE_MAX-3 && (shell_input_line_len+3 > shell_input_line_size))
4745 shell_input_line = (char *)xrealloc (shell_input_line,
4746 1 + (shell_input_line_size += 2));
4747
4748 shell_input_line[shell_input_line_len] = '\n';
4749 shell_input_line[shell_input_line_len + 1] = '\0';
4750
4751 set_line_mbstate ();
4752 }
4753 }
4754
4755 next_alias_char:
4756 uc = shell_input_line[shell_input_line_index];
4757
4758 if (uc)
4759 shell_input_line_index++;
4760
4761 #if defined (ALIAS) || defined (DPAREN_ARITHMETIC)
4762 /* If UC is NULL, we have reached the end of the current input string. If
4763 pushed_string_list is non-empty, it's time to pop to the previous string
4764 because we have fully consumed the result of the last alias expansion.
4765 Do it transparently; just return the next character of the string popped
4766 to. */
4767 /* If pushed_string_list != 0 but pushed_string_list->expander == 0 (not
4768 currently tested) and the flags value is not PSH_SOURCE, we are not
4769 parsing an alias, we have just saved one (push_string, when called by
4770 the parse_dparen code) In this case, just go on as well. The PSH_SOURCE
4771 case is handled below. */
4772 pop_alias:
4773 if (uc == 0 && pushed_string_list && pushed_string_list->flags != PSH_SOURCE)
4774 {
4775 pop_string ();
4776 uc = shell_input_line[shell_input_line_index];
4777 if (uc)
4778 shell_input_line_index++;
4779 }
4780 #endif /* ALIAS || DPAREN_ARITHMETIC */
4781
4782 if MBTEST(uc == '\\' && remove_quoted_newline && shell_input_line[shell_input_line_index] == '\n')
4783 {
4784 if (SHOULD_PROMPT ())
4785 prompt_again ();
4786 line_number++;
4787 /* What do we do here if we're expanding an alias whose definition
4788 includes an escaped newline? If that's the last character in the
4789 alias expansion, we just pop the pushed string list (recall that
4790 we inhibit the appending of a space in mk_alexpansion() if newline
4791 is the last character). If it's not the last character, we need
4792 to consume the quoted newline and move to the next character in
4793 the expansion. */
4794 #if defined (ALIAS)
4795 if (expanding_alias () && shell_input_line[shell_input_line_index+1] == '\0')
4796 {
4797 uc = 0;
4798 goto pop_alias;
4799 }
4800 else if (expanding_alias () && shell_input_line[shell_input_line_index+1] != '\0')
4801 {
4802 shell_input_line_index++; /* skip newline */
4803 goto next_alias_char; /* and get next character */
4804 }
4805 else
4806 #endif
4807 goto restart_read;
4808 }
4809
4810 if (uc == 0 && shell_input_line_terminator == EOF)
4811 return ((shell_input_line_index != 0) ? '\n' : EOF);
4812
4813 #if defined (ALIAS) || defined (DPAREN_ARITHMETIC)
4814 /* We already know that we are not parsing an alias expansion because of the
4815 check for expanding_alias() above. This knows how parse_and_execute
4816 handles switching to st_string input while an alias is being expanded,
4817 hence the check for pushed_string_list without pushed_string_list->expander
4818 and the check for PSH_SOURCE as pushed_string_list->flags.
4819 parse_and_execute and parse_string both change the input type to st_string
4820 and place the string to be parsed and executed into location.string, so
4821 we should not stop reading that until the pointer is '\0'.
4822 The check for shell_input_line_terminator may be superfluous.
4823
4824 This solves the problem of `.' inside a multi-line alias with embedded
4825 newlines executing things out of order. */
4826 if (uc == 0 && bash_input.type == st_string && *bash_input.location.string &&
4827 pushed_string_list && pushed_string_list->flags == PSH_SOURCE &&
4828 shell_input_line_terminator == 0)
4829 {
4830 shell_input_line_index = 0;
4831 goto restart_read;
4832 }
4833 #endif
4834
4835 return (uc);
4836 }
4837
4838 /* Put C back into the input for the shell. This might need changes for
4839 HANDLE_MULTIBYTE around EOLs. Since we (currently) never push back a
4840 character different than we read, shell_input_line_property doesn't need
4841 to change when manipulating shell_input_line. The define for
4842 last_shell_getc_is_singlebyte should take care of it, though. */
4843 static void
4844 shell_ungetc (c)
4845 int c;
4846 {
4847 if (shell_input_line && shell_input_line_index)
4848 shell_input_line[--shell_input_line_index] = c;
4849 else
4850 eol_ungetc_lookahead = c;
4851 }
4852
4853 char *
4854 parser_remaining_input ()
4855 {
4856 if (shell_input_line == 0)
4857 return 0;
4858 if (shell_input_line_index < 0 || shell_input_line_index >= shell_input_line_len)
4859 return '\0'; /* XXX */
4860 return (shell_input_line + shell_input_line_index);
4861 }
4862
4863 #ifdef INCLUDE_UNUSED
4864 /* Back the input pointer up by one, effectively `ungetting' a character. */
4865 static void
4866 shell_ungetchar ()
4867 {
4868 if (shell_input_line && shell_input_line_index)
4869 shell_input_line_index--;
4870 }
4871 #endif
4872
4873 /* Discard input until CHARACTER is seen, then push that character back
4874 onto the input stream. */
4875 static void
4876 discard_until (character)
4877 int character;
4878 {
4879 int c;
4880
4881 while ((c = shell_getc (0)) != EOF && c != character)
4882 ;
4883
4884 if (c != EOF)
4885 shell_ungetc (c);
4886 }
4887
4888 void
4889 execute_variable_command (command, vname)
4890 char *command, *vname;
4891 {
4892 char *last_lastarg;
4893 sh_parser_state_t ps;
4894
4895 save_parser_state (&ps);
4896 last_lastarg = get_string_value ("_");
4897 if (last_lastarg)
4898 last_lastarg = savestring (last_lastarg);
4899
4900 parse_and_execute (savestring (command), vname, SEVAL_NONINT|SEVAL_NOHIST);
4901
4902 restore_parser_state (&ps);
4903 bind_variable ("_", last_lastarg, 0);
4904 FREE (last_lastarg);
4905
4906 if (token_to_read == '\n') /* reset_parser was called */
4907 token_to_read = 0;
4908 }
4909
4910 /* Place to remember the token. We try to keep the buffer
4911 at a reasonable size, but it can grow. */
4912 static char *token = (char *)NULL;
4913
4914 /* Current size of the token buffer. */
4915 static int token_buffer_size;
4916
4917 /* Command to read_token () explaining what we want it to do. */
4918 #define READ 0
4919 #define RESET 1
4920 #define prompt_is_ps1 \
4921 (!prompt_string_pointer || prompt_string_pointer == &ps1_prompt)
4922
4923 /* Function for yyparse to call. yylex keeps track of
4924 the last two tokens read, and calls read_token. */
4925 static int
4926 yylex ()
4927 {
4928 if (interactive && (current_token == 0 || current_token == '\n'))
4929 {
4930 /* Before we print a prompt, we might have to check mailboxes.
4931 We do this only if it is time to do so. Notice that only here
4932 is the mail alarm reset; nothing takes place in check_mail ()
4933 except the checking of mail. Please don't change this. */
4934 if (prompt_is_ps1 && parse_and_execute_level == 0 && time_to_check_mail ())
4935 {
4936 check_mail ();
4937 reset_mail_timer ();
4938 }
4939
4940 /* Avoid printing a prompt if we're not going to read anything, e.g.
4941 after resetting the parser with read_token (RESET). */
4942 if (token_to_read == 0 && SHOULD_PROMPT ())
4943 prompt_again ();
4944 }
4945
4946 two_tokens_ago = token_before_that;
4947 token_before_that = last_read_token;
4948 last_read_token = current_token;
4949 current_token = read_token (READ);
4950
4951 if ((parser_state & PST_EOFTOKEN) && current_token == shell_eof_token)
4952 {
4953 current_token = yacc_EOF;
4954 if (bash_input.type == st_string)
4955 rewind_input_string ();
4956 }
4957 parser_state &= ~PST_EOFTOKEN;
4958
4959 return (current_token);
4960 }
4961
4962 /* When non-zero, we have read the required tokens
4963 which allow ESAC to be the next one read. */
4964 static int esacs_needed_count;
4965
4966 static void
4967 push_heredoc (r)
4968 REDIRECT *r;
4969 {
4970 if (need_here_doc >= HEREDOC_MAX)
4971 {
4972 last_command_exit_value = EX_BADUSAGE;
4973 need_here_doc = 0;
4974 report_syntax_error (_("maximum here-document count exceeded"));
4975 reset_parser ();
4976 exit_shell (last_command_exit_value);
4977 }
4978 redir_stack[need_here_doc++] = r;
4979 }
4980
4981 void
4982 gather_here_documents ()
4983 {
4984 int r;
4985
4986 r = 0;
4987 while (need_here_doc > 0)
4988 {
4989 parser_state |= PST_HEREDOC;
4990 make_here_document (redir_stack[r++], line_number);
4991 parser_state &= ~PST_HEREDOC;
4992 need_here_doc--;
4993 }
4994 }
4995
4996 /* When non-zero, an open-brace used to create a group is awaiting a close
4997 brace partner. */
4998 static int open_brace_count;
4999
5000 #define command_token_position(token) \
5001 (((token) == ASSIGNMENT_WORD) || (parser_state&PST_REDIRLIST) || \
5002 ((token) != SEMI_SEMI && (token) != SEMI_AND && (token) != SEMI_SEMI_AND && reserved_word_acceptable(token)))
5003
5004 #define assignment_acceptable(token) \
5005 (command_token_position(token) && ((parser_state & PST_CASEPAT) == 0))
5006
5007 /* Check to see if TOKEN is a reserved word and return the token
5008 value if it is. */
5009 #define CHECK_FOR_RESERVED_WORD(tok) \
5010 do { \
5011 if (!dollar_present && !quoted && \
5012 reserved_word_acceptable (last_read_token)) \
5013 { \
5014 int i; \
5015 for (i = 0; word_token_alist[i].word != (char *)NULL; i++) \
5016 if (STREQ (tok, word_token_alist[i].word)) \
5017 { \
5018 if ((parser_state & PST_CASEPAT) && (word_token_alist[i].token != ESAC)) \
5019 break; \
5020 if (word_token_alist[i].token == TIME && time_command_acceptable () == 0) \
5021 break; \
5022 if (word_token_alist[i].token == ESAC) \
5023 parser_state &= ~(PST_CASEPAT|PST_CASESTMT); \
5024 else if (word_token_alist[i].token == CASE) \
5025 parser_state |= PST_CASESTMT; \
5026 else if (word_token_alist[i].token == COND_END) \
5027 parser_state &= ~(PST_CONDCMD|PST_CONDEXPR); \
5028 else if (word_token_alist[i].token == COND_START) \
5029 parser_state |= PST_CONDCMD; \
5030 else if (word_token_alist[i].token == '{') \
5031 open_brace_count++; \
5032 else if (word_token_alist[i].token == '}' && open_brace_count) \
5033 open_brace_count--; \
5034 return (word_token_alist[i].token); \
5035 } \
5036 } \
5037 } while (0)
5038
5039 #if defined (ALIAS)
5040
5041 /* OK, we have a token. Let's try to alias expand it, if (and only if)
5042 it's eligible.
5043
5044 It is eligible for expansion if EXPAND_ALIASES is set, and
5045 the token is unquoted and the last token read was a command
5046 separator (or expand_next_token is set), and we are currently
5047 processing an alias (pushed_string_list is non-empty) and this
5048 token is not the same as the current or any previously
5049 processed alias.
5050
5051 Special cases that disqualify:
5052 In a pattern list in a case statement (parser_state & PST_CASEPAT). */
5053
5054 static char *
5055 mk_alexpansion (s)
5056 char *s;
5057 {
5058 int l;
5059 char *r;
5060
5061 l = strlen (s);
5062 r = xmalloc (l + 2);
5063 strcpy (r, s);
5064 /* If the last character in the alias is a newline, don't add a trailing
5065 space to the expansion. Works with shell_getc above. */
5066 if (r[l - 1] != ' ' && r[l - 1] != '\n')
5067 r[l++] = ' ';
5068 r[l] = '\0';
5069 return r;
5070 }
5071
5072 static int
5073 alias_expand_token (tokstr)
5074 char *tokstr;
5075 {
5076 char *expanded;
5077 alias_t *ap;
5078
5079 if (((parser_state & PST_ALEXPNEXT) || command_token_position (last_read_token)) &&
5080 (parser_state & PST_CASEPAT) == 0)
5081 {
5082 ap = find_alias (tokstr);
5083
5084 /* Currently expanding this token. */
5085 if (ap && (ap->flags & AL_BEINGEXPANDED))
5086 return (NO_EXPANSION);
5087
5088 /* mk_alexpansion puts an extra space on the end of the alias expansion,
5089 so the lookahead by the parser works right. If this gets changed,
5090 make sure the code in shell_getc that deals with reaching the end of
5091 an expanded alias is changed with it. */
5092 expanded = ap ? mk_alexpansion (ap->value) : (char *)NULL;
5093
5094 if (expanded)
5095 {
5096 push_string (expanded, ap->flags & AL_EXPANDNEXT, ap);
5097 return (RE_READ_TOKEN);
5098 }
5099 else
5100 /* This is an eligible token that does not have an expansion. */
5101 return (NO_EXPANSION);
5102 }
5103 return (NO_EXPANSION);
5104 }
5105 #endif /* ALIAS */
5106
5107 static int
5108 time_command_acceptable ()
5109 {
5110 #if defined (COMMAND_TIMING)
5111 int i;
5112
5113 if (posixly_correct && shell_compatibility_level > 41)
5114 {
5115 /* Quick check of the rest of the line to find the next token. If it
5116 begins with a `-', Posix says to not return `time' as the token.
5117 This was interp 267. */
5118 i = shell_input_line_index;
5119 while (i < shell_input_line_len && (shell_input_line[i] == ' ' || shell_input_line[i] == '\t'))
5120 i++;
5121 if (shell_input_line[i] == '-')
5122 return 0;
5123 }
5124
5125 switch (last_read_token)
5126 {
5127 case 0:
5128 case ';':
5129 case '\n':
5130 case AND_AND:
5131 case OR_OR:
5132 case '&':
5133 case DO:
5134 case THEN:
5135 case ELSE:
5136 case '{': /* } */
5137 case '(': /* ) */
5138 case BANG: /* ! time pipeline */
5139 case TIME: /* time time pipeline */
5140 case TIMEOPT: /* time -p time pipeline */
5141 case TIMEIGN: /* time -p -- ... */
5142 return 1;
5143 default:
5144 return 0;
5145 }
5146 #else
5147 return 0;
5148 #endif /* COMMAND_TIMING */
5149 }
5150
5151 /* Handle special cases of token recognition:
5152 IN is recognized if the last token was WORD and the token
5153 before that was FOR or CASE or SELECT.
5154
5155 DO is recognized if the last token was WORD and the token
5156 before that was FOR or SELECT.
5157
5158 ESAC is recognized if the last token caused `esacs_needed_count'
5159 to be set
5160
5161 `{' is recognized if the last token as WORD and the token
5162 before that was FUNCTION, or if we just parsed an arithmetic
5163 `for' command.
5164
5165 `}' is recognized if there is an unclosed `{' present.
5166
5167 `-p' is returned as TIMEOPT if the last read token was TIME.
5168 `--' is returned as TIMEIGN if the last read token was TIMEOPT.
5169
5170 ']]' is returned as COND_END if the parser is currently parsing
5171 a conditional expression ((parser_state & PST_CONDEXPR) != 0)
5172
5173 `time' is returned as TIME if and only if it is immediately
5174 preceded by one of `;', `\n', `||', `&&', or `&'.
5175 */
5176
5177 static int
5178 special_case_tokens (tokstr)
5179 char *tokstr;
5180 {
5181 if ((last_read_token == WORD) &&
5182 #if defined (SELECT_COMMAND)
5183 ((token_before_that == FOR) || (token_before_that == CASE) || (token_before_that == SELECT)) &&
5184 #else
5185 ((token_before_that == FOR) || (token_before_that == CASE)) &&
5186 #endif
5187 (tokstr[0] == 'i' && tokstr[1] == 'n' && tokstr[2] == 0))
5188 {
5189 if (token_before_that == CASE)
5190 {
5191 parser_state |= PST_CASEPAT;
5192 esacs_needed_count++;
5193 }
5194 return (IN);
5195 }
5196
5197 if (last_read_token == WORD &&
5198 #if defined (SELECT_COMMAND)
5199 (token_before_that == FOR || token_before_that == SELECT) &&
5200 #else
5201 (token_before_that == FOR) &&
5202 #endif
5203 (tokstr[0] == 'd' && tokstr[1] == 'o' && tokstr[2] == '\0'))
5204 return (DO);
5205
5206 /* Ditto for ESAC in the CASE case.
5207 Specifically, this handles "case word in esac", which is a legal
5208 construct, certainly because someone will pass an empty arg to the
5209 case construct, and we don't want it to barf. Of course, we should
5210 insist that the case construct has at least one pattern in it, but
5211 the designers disagree. */
5212 if (esacs_needed_count)
5213 {
5214 esacs_needed_count--;
5215 if (STREQ (tokstr, "esac"))
5216 {
5217 parser_state &= ~PST_CASEPAT;
5218 return (ESAC);
5219 }
5220 }
5221
5222 /* The start of a shell function definition. */
5223 if (parser_state & PST_ALLOWOPNBRC)
5224 {
5225 parser_state &= ~PST_ALLOWOPNBRC;
5226 if (tokstr[0] == '{' && tokstr[1] == '\0') /* } */
5227 {
5228 open_brace_count++;
5229 function_bstart = line_number;
5230 return ('{'); /* } */
5231 }
5232 }
5233
5234 /* We allow a `do' after a for ((...)) without an intervening
5235 list_terminator */
5236 if (last_read_token == ARITH_FOR_EXPRS && tokstr[0] == 'd' && tokstr[1] == 'o' && !tokstr[2])
5237 return (DO);
5238 if (last_read_token == ARITH_FOR_EXPRS && tokstr[0] == '{' && tokstr[1] == '\0') /* } */
5239 {
5240 open_brace_count++;
5241 return ('{'); /* } */
5242 }
5243
5244 if (open_brace_count && reserved_word_acceptable (last_read_token) && tokstr[0] == '}' && !tokstr[1])
5245 {
5246 open_brace_count--; /* { */
5247 return ('}');
5248 }
5249
5250 #if defined (COMMAND_TIMING)
5251 /* Handle -p after `time'. */
5252 if (last_read_token == TIME && tokstr[0] == '-' && tokstr[1] == 'p' && !tokstr[2])
5253 return (TIMEOPT);
5254 /* Handle -- after `time -p'. */
5255 if (last_read_token == TIMEOPT && tokstr[0] == '-' && tokstr[1] == '-' && !tokstr[2])
5256 return (TIMEIGN);
5257 #endif
5258
5259 #if defined (COND_COMMAND) /* [[ */
5260 if ((parser_state & PST_CONDEXPR) && tokstr[0] == ']' && tokstr[1] == ']' && tokstr[2] == '\0')
5261 return (COND_END);
5262 #endif
5263
5264 return (-1);
5265 }
5266
5267 /* Called from shell.c when Control-C is typed at top level. Or
5268 by the error rule at top level. */
5269 void
5270 reset_parser ()
5271 {
5272 dstack.delimiter_depth = 0; /* No delimiters found so far. */
5273 open_brace_count = 0;
5274
5275 #if defined (EXTENDED_GLOB)
5276 /* Reset to global value of extended glob */
5277 if (parser_state & PST_EXTPAT)
5278 extended_glob = global_extglob;
5279 #endif
5280
5281 parser_state = 0;
5282
5283 #if defined (ALIAS) || defined (DPAREN_ARITHMETIC)
5284 if (pushed_string_list)
5285 free_string_list ();
5286 #endif /* ALIAS || DPAREN_ARITHMETIC */
5287
5288 if (shell_input_line)
5289 {
5290 free (shell_input_line);
5291 shell_input_line = (char *)NULL;
5292 shell_input_line_size = shell_input_line_index = 0;
5293 }
5294
5295 FREE (word_desc_to_read);
5296 word_desc_to_read = (WORD_DESC *)NULL;
5297
5298 eol_ungetc_lookahead = 0;
5299
5300 current_token = '\n'; /* XXX */
5301 last_read_token = '\n';
5302 token_to_read = '\n';
5303 }
5304
5305 /* Read the next token. Command can be READ (normal operation) or
5306 RESET (to normalize state). */
5307 static int
5308 read_token (command)
5309 int command;
5310 {
5311 int character; /* Current character. */
5312 int peek_char; /* Temporary look-ahead character. */
5313 int result; /* The thing to return. */
5314
5315 if (command == RESET)
5316 {
5317 reset_parser ();
5318 return ('\n');
5319 }
5320
5321 if (token_to_read)
5322 {
5323 result = token_to_read;
5324 if (token_to_read == WORD || token_to_read == ASSIGNMENT_WORD)
5325 {
5326 yylval.word = word_desc_to_read;
5327 word_desc_to_read = (WORD_DESC *)NULL;
5328 }
5329 token_to_read = 0;
5330 return (result);
5331 }
5332
5333 #if defined (COND_COMMAND)
5334 if ((parser_state & (PST_CONDCMD|PST_CONDEXPR)) == PST_CONDCMD)
5335 {
5336 cond_lineno = line_number;
5337 parser_state |= PST_CONDEXPR;
5338 yylval.command = parse_cond_command ();
5339 if (cond_token != COND_END)
5340 {
5341 cond_error ();
5342 return (-1);
5343 }
5344 token_to_read = COND_END;
5345 parser_state &= ~(PST_CONDEXPR|PST_CONDCMD);
5346 return (COND_CMD);
5347 }
5348 #endif
5349
5350 #if defined (ALIAS)
5351 /* This is a place to jump back to once we have successfully expanded a
5352 token with an alias and pushed the string with push_string () */
5353 re_read_token:
5354 #endif /* ALIAS */
5355
5356 /* Read a single word from input. Start by skipping blanks. */
5357 while ((character = shell_getc (1)) != EOF && shellblank (character))
5358 ;
5359
5360 if (character == EOF)
5361 {
5362 EOF_Reached = 1;
5363 return (yacc_EOF);
5364 }
5365
5366 if MBTEST(character == '#' && (!interactive || interactive_comments))
5367 {
5368 /* A comment. Discard until EOL or EOF, and then return a newline. */
5369 discard_until ('\n');
5370 shell_getc (0);
5371 character = '\n'; /* this will take the next if statement and return. */
5372 }
5373
5374 if (character == '\n')
5375 {
5376 /* If we're about to return an unquoted newline, we can go and collect
5377 the text of any pending here document. */
5378 if (need_here_doc)
5379 gather_here_documents ();
5380
5381 #if defined (ALIAS)
5382 parser_state &= ~PST_ALEXPNEXT;
5383 #endif /* ALIAS */
5384
5385 parser_state &= ~PST_ASSIGNOK;
5386
5387 return (character);
5388 }
5389
5390 if (parser_state & PST_REGEXP)
5391 goto tokword;
5392
5393 /* Shell meta-characters. */
5394 if MBTEST(shellmeta (character) && ((parser_state & PST_DBLPAREN) == 0))
5395 {
5396 #if defined (ALIAS)
5397 /* Turn off alias tokenization iff this character sequence would
5398 not leave us ready to read a command. */
5399 if (character == '<' || character == '>')
5400 parser_state &= ~PST_ALEXPNEXT;
5401 #endif /* ALIAS */
5402
5403 parser_state &= ~PST_ASSIGNOK;
5404
5405 peek_char = shell_getc (1);
5406 if (character == peek_char)
5407 {
5408 switch (character)
5409 {
5410 case '<':
5411 /* If '<' then we could be at "<<" or at "<<-". We have to
5412 look ahead one more character. */
5413 peek_char = shell_getc (1);
5414 if MBTEST(peek_char == '-')
5415 return (LESS_LESS_MINUS);
5416 else if MBTEST(peek_char == '<')
5417 return (LESS_LESS_LESS);
5418 else
5419 {
5420 shell_ungetc (peek_char);
5421 return (LESS_LESS);
5422 }
5423
5424 case '>':
5425 return (GREATER_GREATER);
5426
5427 case ';':
5428 parser_state |= PST_CASEPAT;
5429 #if defined (ALIAS)
5430 parser_state &= ~PST_ALEXPNEXT;
5431 #endif /* ALIAS */
5432
5433 peek_char = shell_getc (1);
5434 if MBTEST(peek_char == '&')
5435 return (SEMI_SEMI_AND);
5436 else
5437 {
5438 shell_ungetc (peek_char);
5439 return (SEMI_SEMI);
5440 }
5441
5442 case '&':
5443 return (AND_AND);
5444
5445 case '|':
5446 return (OR_OR);
5447
5448 #if defined (DPAREN_ARITHMETIC) || defined (ARITH_FOR_COMMAND)
5449 case '(': /* ) */
5450 result = parse_dparen (character);
5451 if (result == -2)
5452 break;
5453 else
5454 return result;
5455 #endif
5456 }
5457 }
5458 else if MBTEST(character == '<' && peek_char == '&')
5459 return (LESS_AND);
5460 else if MBTEST(character == '>' && peek_char == '&')
5461 return (GREATER_AND);
5462 else if MBTEST(character == '<' && peek_char == '>')
5463 return (LESS_GREATER);
5464 else if MBTEST(character == '>' && peek_char == '|')
5465 return (GREATER_BAR);
5466 else if MBTEST(character == '&' && peek_char == '>')
5467 {
5468 peek_char = shell_getc (1);
5469 if MBTEST(peek_char == '>')
5470 return (AND_GREATER_GREATER);
5471 else
5472 {
5473 shell_ungetc (peek_char);
5474 return (AND_GREATER);
5475 }
5476 }
5477 else if MBTEST(character == '|' && peek_char == '&')
5478 return (BAR_AND);
5479 else if MBTEST(character == ';' && peek_char == '&')
5480 {
5481 parser_state |= PST_CASEPAT;
5482 #if defined (ALIAS)
5483 parser_state &= ~PST_ALEXPNEXT;
5484 #endif /* ALIAS */
5485 return (SEMI_AND);
5486 }
5487
5488 shell_ungetc (peek_char);
5489
5490 /* If we look like we are reading the start of a function
5491 definition, then let the reader know about it so that
5492 we will do the right thing with `{'. */
5493 if MBTEST(character == ')' && last_read_token == '(' && token_before_that == WORD)
5494 {
5495 parser_state |= PST_ALLOWOPNBRC;
5496 #if defined (ALIAS)
5497 parser_state &= ~PST_ALEXPNEXT;
5498 #endif /* ALIAS */
5499 function_dstart = line_number;
5500 }
5501
5502 /* case pattern lists may be preceded by an optional left paren. If
5503 we're not trying to parse a case pattern list, the left paren
5504 indicates a subshell. */
5505 if MBTEST(character == '(' && (parser_state & PST_CASEPAT) == 0) /* ) */
5506 parser_state |= PST_SUBSHELL;
5507 /*(*/
5508 else if MBTEST((parser_state & PST_CASEPAT) && character == ')')
5509 parser_state &= ~PST_CASEPAT;
5510 /*(*/
5511 else if MBTEST((parser_state & PST_SUBSHELL) && character == ')')
5512 parser_state &= ~PST_SUBSHELL;
5513
5514 #if defined (PROCESS_SUBSTITUTION)
5515 /* Check for the constructs which introduce process substitution.
5516 Shells running in `posix mode' don't do process substitution. */
5517 if MBTEST(posixly_correct || ((character != '>' && character != '<') || peek_char != '(')) /*)*/
5518 #endif /* PROCESS_SUBSTITUTION */
5519 return (character);
5520 }
5521
5522 /* Hack <&- (close stdin) case. Also <&N- (dup and close). */
5523 if MBTEST(character == '-' && (last_read_token == LESS_AND || last_read_token == GREATER_AND))
5524 return (character);
5525
5526 tokword:
5527 /* Okay, if we got this far, we have to read a word. Read one,
5528 and then check it against the known ones. */
5529 result = read_token_word (character);
5530 #if defined (ALIAS)
5531 if (result == RE_READ_TOKEN)
5532 goto re_read_token;
5533 #endif
5534 return result;
5535 }
5536
5537 /*
5538 * Match a $(...) or other grouping construct. This has to handle embedded
5539 * quoted strings ('', ``, "") and nested constructs. It also must handle
5540 * reprompting the user, if necessary, after reading a newline, and returning
5541 * correct error values if it reads EOF.
5542 */
5543 #define P_FIRSTCLOSE 0x0001
5544 #define P_ALLOWESC 0x0002
5545 #define P_DQUOTE 0x0004
5546 #define P_COMMAND 0x0008 /* parsing a command, so look for comments */
5547 #define P_BACKQUOTE 0x0010 /* parsing a backquoted command substitution */
5548 #define P_ARRAYSUB 0x0020 /* parsing a [...] array subscript for assignment */
5549 #define P_DOLBRACE 0x0040 /* parsing a ${...} construct */
5550
5551 /* Lexical state while parsing a grouping construct or $(...). */
5552 #define LEX_WASDOL 0x001
5553 #define LEX_CKCOMMENT 0x002
5554 #define LEX_INCOMMENT 0x004
5555 #define LEX_PASSNEXT 0x008
5556 #define LEX_RESWDOK 0x010
5557 #define LEX_CKCASE 0x020
5558 #define LEX_INCASE 0x040
5559 #define LEX_INHEREDOC 0x080
5560 #define LEX_HEREDELIM 0x100 /* reading here-doc delimiter */
5561 #define LEX_STRIPDOC 0x200 /* <<- strip tabs from here doc delim */
5562 #define LEX_INWORD 0x400
5563
5564 #define COMSUB_META(ch) ((ch) == ';' || (ch) == '&' || (ch) == '|')
5565
5566 #define CHECK_NESTRET_ERROR() \
5567 do { \
5568 if (nestret == &matched_pair_error) \
5569 { \
5570 free (ret); \
5571 return &matched_pair_error; \
5572 } \
5573 } while (0)
5574
5575 #define APPEND_NESTRET() \
5576 do { \
5577 if (nestlen) \
5578 { \
5579 RESIZE_MALLOCED_BUFFER (ret, retind, nestlen, retsize, 64); \
5580 strcpy (ret + retind, nestret); \
5581 retind += nestlen; \
5582 } \
5583 } while (0)
5584
5585 static char matched_pair_error;
5586
5587 static char *
5588 parse_matched_pair (qc, open, close, lenp, flags)
5589 int qc; /* `"' if this construct is within double quotes */
5590 int open, close;
5591 int *lenp, flags;
5592 {
5593 int count, ch, tflags;
5594 int nestlen, ttranslen, start_lineno;
5595 char *ret, *nestret, *ttrans;
5596 int retind, retsize, rflags;
5597 int dolbrace_state;
5598
5599 dolbrace_state = (flags & P_DOLBRACE) ? DOLBRACE_PARAM : 0;
5600
5601 /*itrace("parse_matched_pair[%d]: open = %c close = %c flags = %d", line_number, open, close, flags);*/
5602 count = 1;
5603 tflags = 0;
5604
5605 if ((flags & P_COMMAND) && qc != '`' && qc != '\'' && qc != '"' && (flags & P_DQUOTE) == 0)
5606 tflags |= LEX_CKCOMMENT;
5607
5608 /* RFLAGS is the set of flags we want to pass to recursive calls. */
5609 rflags = (qc == '"') ? P_DQUOTE : (flags & P_DQUOTE);
5610
5611 ret = (char *)xmalloc (retsize = 64);
5612 retind = 0;
5613
5614 start_lineno = line_number;
5615 while (count)
5616 {
5617 ch = shell_getc (qc != '\'' && (tflags & (LEX_PASSNEXT)) == 0);
5618
5619 if (ch == EOF)
5620 {
5621 free (ret);
5622 parser_error (start_lineno, _("unexpected EOF while looking for matching `%c'"), close);
5623 EOF_Reached = 1; /* XXX */
5624 return (&matched_pair_error);
5625 }
5626
5627 /* Possible reprompting. */
5628 if (ch == '\n' && SHOULD_PROMPT ())
5629 prompt_again ();
5630
5631 /* Don't bother counting parens or doing anything else if in a comment
5632 or part of a case statement */
5633 if (tflags & LEX_INCOMMENT)
5634 {
5635 /* Add this character. */
5636 RESIZE_MALLOCED_BUFFER (ret, retind, 1, retsize, 64);
5637 ret[retind++] = ch;
5638
5639 if (ch == '\n')
5640 tflags &= ~LEX_INCOMMENT;
5641
5642 continue;
5643 }
5644
5645 /* Not exactly right yet, should handle shell metacharacters, too. If
5646 any changes are made to this test, make analogous changes to subst.c:
5647 extract_delimited_string(). */
5648 else if MBTEST((tflags & LEX_CKCOMMENT) && (tflags & LEX_INCOMMENT) == 0 && ch == '#' && (retind == 0 || ret[retind-1] == '\n' || shellblank (ret[retind - 1])))
5649 tflags |= LEX_INCOMMENT;
5650
5651 if (tflags & LEX_PASSNEXT) /* last char was backslash */
5652 {
5653 tflags &= ~LEX_PASSNEXT;
5654 if (qc != '\'' && ch == '\n') /* double-quoted \<newline> disappears. */
5655 {
5656 if (retind > 0)
5657 retind--; /* swallow previously-added backslash */
5658 continue;
5659 }
5660
5661 RESIZE_MALLOCED_BUFFER (ret, retind, 2, retsize, 64);
5662 if MBTEST(ch == CTLESC)
5663 ret[retind++] = CTLESC;
5664 ret[retind++] = ch;
5665 continue;
5666 }
5667 /* If we're reparsing the input (e.g., from parse_string_to_word_list),
5668 we've already prepended CTLESC to single-quoted results of $'...'.
5669 We may want to do this for other CTLESC-quoted characters in
5670 reparse, too. */
5671 else if MBTEST((parser_state & PST_REPARSE) && open == '\'' && (ch == CTLESC || ch == CTLNUL))
5672 {
5673 RESIZE_MALLOCED_BUFFER (ret, retind, 1, retsize, 64);
5674 ret[retind++] = ch;
5675 continue;
5676 }
5677 else if MBTEST(ch == CTLESC || ch == CTLNUL) /* special shell escapes */
5678 {
5679 RESIZE_MALLOCED_BUFFER (ret, retind, 2, retsize, 64);
5680 ret[retind++] = CTLESC;
5681 ret[retind++] = ch;
5682 continue;
5683 }
5684 else if MBTEST(ch == close) /* ending delimiter */
5685 count--;
5686 /* handle nested ${...} specially. */
5687 else if MBTEST(open != close && (tflags & LEX_WASDOL) && open == '{' && ch == open) /* } */
5688 count++;
5689 else if MBTEST(((flags & P_FIRSTCLOSE) == 0) && ch == open) /* nested begin */
5690 count++;
5691
5692 /* Add this character. */
5693 RESIZE_MALLOCED_BUFFER (ret, retind, 1, retsize, 64);
5694 ret[retind++] = ch;
5695
5696 /* If we just read the ending character, don't bother continuing. */
5697 if (count == 0)
5698 break;
5699
5700 if (open == '\'') /* '' inside grouping construct */
5701 {
5702 if MBTEST((flags & P_ALLOWESC) && ch == '\\')
5703 tflags |= LEX_PASSNEXT;
5704 continue;
5705 }
5706
5707 if MBTEST(ch == '\\') /* backslashes */
5708 tflags |= LEX_PASSNEXT;
5709
5710 /* Based on which dolstate is currently in (param, op, or word),
5711 decide what the op is. We're really only concerned if it's % or
5712 #, so we can turn on a flag that says whether or not we should
5713 treat single quotes as special when inside a double-quoted
5714 ${...}. This logic must agree with subst.c:extract_dollar_brace_string
5715 since they share the same defines. */
5716 /* FLAG POSIX INTERP 221 */
5717 if (flags & P_DOLBRACE)
5718 {
5719 /* ${param%[%]word} */
5720 if MBTEST(dolbrace_state == DOLBRACE_PARAM && ch == '%' && retind > 1)
5721 dolbrace_state = DOLBRACE_QUOTE;
5722 /* ${param#[#]word} */
5723 else if MBTEST(dolbrace_state == DOLBRACE_PARAM && ch == '#' && retind > 1)
5724 dolbrace_state = DOLBRACE_QUOTE;
5725 /* ${param/[/]pat/rep} */
5726 else if MBTEST(dolbrace_state == DOLBRACE_PARAM && ch == '/' && retind > 1)
5727 dolbrace_state = DOLBRACE_QUOTE2; /* XXX */
5728 /* ${param^[^]pat} */
5729 else if MBTEST(dolbrace_state == DOLBRACE_PARAM && ch == '^' && retind > 1)
5730 dolbrace_state = DOLBRACE_QUOTE;
5731 /* ${param,[,]pat} */
5732 else if MBTEST(dolbrace_state == DOLBRACE_PARAM && ch == ',' && retind > 1)
5733 dolbrace_state = DOLBRACE_QUOTE;
5734 else if MBTEST(dolbrace_state == DOLBRACE_PARAM && strchr ("#%^,~:-=?+/", ch) != 0)
5735 dolbrace_state = DOLBRACE_OP;
5736 else if MBTEST(dolbrace_state == DOLBRACE_OP && strchr ("#%^,~:-=?+/", ch) == 0)
5737 dolbrace_state = DOLBRACE_WORD;
5738 }
5739
5740 /* The big hammer. Single quotes aren't special in double quotes. The
5741 problem is that Posix used to say the single quotes are semi-special:
5742 within a double-quoted ${...} construct "an even number of
5743 unescaped double-quotes or single-quotes, if any, shall occur." */
5744 /* This was changed in Austin Group Interp 221 */
5745 if MBTEST(posixly_correct && shell_compatibility_level > 41 && dolbrace_state != DOLBRACE_QUOTE && dolbrace_state != DOLBRACE_QUOTE2 && (flags & P_DQUOTE) && (flags & P_DOLBRACE) && ch == '\'')
5746 continue;
5747
5748 /* Could also check open == '`' if we want to parse grouping constructs
5749 inside old-style command substitution. */
5750 if (open != close) /* a grouping construct */
5751 {
5752 if MBTEST(shellquote (ch))
5753 {
5754 /* '', ``, or "" inside $(...) or other grouping construct. */
5755 push_delimiter (dstack, ch);
5756 if MBTEST((tflags & LEX_WASDOL) && ch == '\'') /* $'...' inside group */
5757 nestret = parse_matched_pair (ch, ch, ch, &nestlen, P_ALLOWESC|rflags);
5758 else
5759 nestret = parse_matched_pair (ch, ch, ch, &nestlen, rflags);
5760 pop_delimiter (dstack);
5761 CHECK_NESTRET_ERROR ();
5762
5763 if MBTEST((tflags & LEX_WASDOL) && ch == '\'' && (extended_quote || (rflags & P_DQUOTE) == 0))
5764 {
5765 /* Translate $'...' here. */
5766 ttrans = ansiexpand (nestret, 0, nestlen - 1, &ttranslen);
5767 xfree (nestret);
5768
5769 /* If we're parsing a double-quoted brace expansion and we are
5770 not in a place where single quotes are treated specially,
5771 make sure we single-quote the results of the ansi
5772 expansion because quote removal should remove them later */
5773 /* FLAG POSIX INTERP 221 */
5774 if ((shell_compatibility_level > 42) && (rflags & P_DQUOTE) && (dolbrace_state == DOLBRACE_QUOTE2) && (flags & P_DOLBRACE))
5775 {
5776 nestret = sh_single_quote (ttrans);
5777 free (ttrans);
5778 nestlen = strlen (nestret);
5779 }
5780 else if ((rflags & P_DQUOTE) == 0)
5781 {
5782 nestret = sh_single_quote (ttrans);
5783 free (ttrans);
5784 nestlen = strlen (nestret);
5785 }
5786 else
5787 {
5788 nestret = ttrans;
5789 nestlen = ttranslen;
5790 }
5791 retind -= 2; /* back up before the $' */
5792 }
5793 else if MBTEST((tflags & LEX_WASDOL) && ch == '"' && (extended_quote || (rflags & P_DQUOTE) == 0))
5794 {
5795 /* Locale expand $"..." here. */
5796 ttrans = localeexpand (nestret, 0, nestlen - 1, start_lineno, &ttranslen);
5797 xfree (nestret);
5798
5799 nestret = sh_mkdoublequoted (ttrans, ttranslen, 0);
5800 free (ttrans);
5801 nestlen = ttranslen + 2;
5802 retind -= 2; /* back up before the $" */
5803 }
5804
5805 APPEND_NESTRET ();
5806 FREE (nestret);
5807 }
5808 else if ((flags & P_ARRAYSUB) && (tflags & LEX_WASDOL) && (ch == '(' || ch == '{' || ch == '[')) /* ) } ] */
5809 goto parse_dollar_word;
5810 }
5811 /* Parse an old-style command substitution within double quotes as a
5812 single word. */
5813 /* XXX - sh and ksh93 don't do this - XXX */
5814 else if MBTEST(open == '"' && ch == '`')
5815 {
5816 nestret = parse_matched_pair (0, '`', '`', &nestlen, rflags);
5817
5818 CHECK_NESTRET_ERROR ();
5819 APPEND_NESTRET ();
5820
5821 FREE (nestret);
5822 }
5823 else if MBTEST(open != '`' && (tflags & LEX_WASDOL) && (ch == '(' || ch == '{' || ch == '[')) /* ) } ] */
5824 /* check for $(), $[], or ${} inside quoted string. */
5825 {
5826 parse_dollar_word:
5827 if (open == ch) /* undo previous increment */
5828 count--;
5829 if (ch == '(') /* ) */
5830 nestret = parse_comsub (0, '(', ')', &nestlen, (rflags|P_COMMAND) & ~P_DQUOTE);
5831 else if (ch == '{') /* } */
5832 nestret = parse_matched_pair (0, '{', '}', &nestlen, P_FIRSTCLOSE|P_DOLBRACE|rflags);
5833 else if (ch == '[') /* ] */
5834 nestret = parse_matched_pair (0, '[', ']', &nestlen, rflags);
5835
5836 CHECK_NESTRET_ERROR ();
5837 APPEND_NESTRET ();
5838
5839 FREE (nestret);
5840 }
5841 if MBTEST(ch == '$')
5842 tflags |= LEX_WASDOL;
5843 else
5844 tflags &= ~LEX_WASDOL;
5845 }
5846
5847 ret[retind] = '\0';
5848 if (lenp)
5849 *lenp = retind;
5850 /*itrace("parse_matched_pair[%d]: returning %s", line_number, ret);*/
5851 return ret;
5852 }
5853
5854 /* Parse a $(...) command substitution. This is messier than I'd like, and
5855 reproduces a lot more of the token-reading code than I'd like. */
5856 static char *
5857 parse_comsub (qc, open, close, lenp, flags)
5858 int qc; /* `"' if this construct is within double quotes */
5859 int open, close;
5860 int *lenp, flags;
5861 {
5862 int count, ch, peekc, tflags, lex_rwlen, lex_wlen, lex_firstind;
5863 int nestlen, ttranslen, start_lineno;
5864 char *ret, *nestret, *ttrans, *heredelim;
5865 int retind, retsize, rflags, hdlen;
5866
5867 /* Posix interp 217 says arithmetic expressions have precedence, so
5868 assume $(( introduces arithmetic expansion and parse accordingly. */
5869 peekc = shell_getc (0);
5870 shell_ungetc (peekc);
5871 if (peekc == '(')
5872 return (parse_matched_pair (qc, open, close, lenp, 0));
5873
5874 /*itrace("parse_comsub: qc = `%c' open = %c close = %c", qc, open, close);*/
5875 count = 1;
5876 tflags = LEX_RESWDOK;
5877
5878 if ((flags & P_COMMAND) && qc != '\'' && qc != '"' && (flags & P_DQUOTE) == 0)
5879 tflags |= LEX_CKCASE;
5880 if ((tflags & LEX_CKCASE) && (interactive == 0 || interactive_comments))
5881 tflags |= LEX_CKCOMMENT;
5882
5883 /* RFLAGS is the set of flags we want to pass to recursive calls. */
5884 rflags = (flags & P_DQUOTE);
5885
5886 ret = (char *)xmalloc (retsize = 64);
5887 retind = 0;
5888
5889 start_lineno = line_number;
5890 lex_rwlen = lex_wlen = 0;
5891
5892 heredelim = 0;
5893 lex_firstind = -1;
5894
5895 while (count)
5896 {
5897 comsub_readchar:
5898 ch = shell_getc (qc != '\'' && (tflags & (LEX_INCOMMENT|LEX_PASSNEXT)) == 0);
5899
5900 if (ch == EOF)
5901 {
5902 eof_error:
5903 free (ret);
5904 FREE (heredelim);
5905 parser_error (start_lineno, _("unexpected EOF while looking for matching `%c'"), close);
5906 EOF_Reached = 1; /* XXX */
5907 return (&matched_pair_error);
5908 }
5909
5910 /* If we hit the end of a line and are reading the contents of a here
5911 document, and it's not the same line that the document starts on,
5912 check for this line being the here doc delimiter. Otherwise, if
5913 we're in a here document, mark the next character as the beginning
5914 of a line. */
5915 if (ch == '\n')
5916 {
5917 if ((tflags & LEX_HEREDELIM) && heredelim)
5918 {
5919 tflags &= ~LEX_HEREDELIM;
5920 tflags |= LEX_INHEREDOC;
5921 lex_firstind = retind + 1;
5922 }
5923 else if (tflags & LEX_INHEREDOC)
5924 {
5925 int tind;
5926 tind = lex_firstind;
5927 while ((tflags & LEX_STRIPDOC) && ret[tind] == '\t')
5928 tind++;
5929 if (STREQN (ret + tind, heredelim, hdlen))
5930 {
5931 tflags &= ~(LEX_STRIPDOC|LEX_INHEREDOC);
5932 /*itrace("parse_comsub:%d: found here doc end `%s'", line_number, ret + tind);*/
5933 free (heredelim);
5934 heredelim = 0;
5935 lex_firstind = -1;
5936 }
5937 else
5938 lex_firstind = retind + 1;
5939 }
5940 }
5941
5942 /* Possible reprompting. */
5943 if (ch == '\n' && SHOULD_PROMPT ())
5944 prompt_again ();
5945
5946 /* XXX -- possibly allow here doc to be delimited by ending right
5947 paren. */
5948 if ((tflags & LEX_INHEREDOC) && ch == close && count == 1)
5949 {
5950 int tind;
5951 /*itrace("parse_comsub: in here doc, ch == close, retind - firstind = %d hdlen = %d retind = %d", retind-lex_firstind, hdlen, retind);*/
5952 tind = lex_firstind;
5953 while ((tflags & LEX_STRIPDOC) && ret[tind] == '\t')
5954 tind++;
5955 if (retind-tind == hdlen && STREQN (ret + tind, heredelim, hdlen))
5956 {
5957 tflags &= ~(LEX_STRIPDOC|LEX_INHEREDOC);
5958 /*itrace("parse_comsub:%d: found here doc end `%s'", line_number, ret + tind);*/
5959 free (heredelim);
5960 heredelim = 0;
5961 lex_firstind = -1;
5962 }
5963 }
5964
5965 /* Don't bother counting parens or doing anything else if in a comment */
5966 if (tflags & (LEX_INCOMMENT|LEX_INHEREDOC))
5967 {
5968 /* Add this character. */
5969 RESIZE_MALLOCED_BUFFER (ret, retind, 1, retsize, 64);
5970 ret[retind++] = ch;
5971
5972 if ((tflags & LEX_INCOMMENT) && ch == '\n')
5973 {
5974 /*itrace("parse_comsub:%d: lex_incomment -> 0 ch = `%c'", line_number, ch);*/
5975 tflags &= ~LEX_INCOMMENT;
5976 }
5977
5978 continue;
5979 }
5980
5981 if (tflags & LEX_PASSNEXT) /* last char was backslash */
5982 {
5983 /*itrace("parse_comsub:%d: lex_passnext -> 0 ch = `%c' (%d)", line_number, ch, __LINE__);*/
5984 tflags &= ~LEX_PASSNEXT;
5985 if (qc != '\'' && ch == '\n') /* double-quoted \<newline> disappears. */
5986 {
5987 if (retind > 0)
5988 retind--; /* swallow previously-added backslash */
5989 continue;
5990 }
5991
5992 RESIZE_MALLOCED_BUFFER (ret, retind, 2, retsize, 64);
5993 if MBTEST(ch == CTLESC)
5994 ret[retind++] = CTLESC;
5995 ret[retind++] = ch;
5996 continue;
5997 }
5998
5999 /* If this is a shell break character, we are not in a word. If not,
6000 we either start or continue a word. */
6001 if MBTEST(shellbreak (ch))
6002 {
6003 tflags &= ~LEX_INWORD;
6004 /*itrace("parse_comsub:%d: lex_inword -> 0 ch = `%c' (%d)", line_number, ch, __LINE__);*/
6005 }
6006 else
6007 {
6008 if (tflags & LEX_INWORD)
6009 {
6010 lex_wlen++;
6011 /*itrace("parse_comsub:%d: lex_inword == 1 ch = `%c' lex_wlen = %d (%d)", line_number, ch, lex_wlen, __LINE__);*/
6012 }
6013 else
6014 {
6015 /*itrace("parse_comsub:%d: lex_inword -> 1 ch = `%c' (%d)", line_number, ch, __LINE__);*/
6016 tflags |= LEX_INWORD;
6017 lex_wlen = 0;
6018 }
6019 }
6020
6021 /* Skip whitespace */
6022 if MBTEST(shellblank (ch) && (tflags & LEX_HEREDELIM) == 0 && lex_rwlen == 0)
6023 {
6024 /* Add this character. */
6025 RESIZE_MALLOCED_BUFFER (ret, retind, 1, retsize, 64);
6026 ret[retind++] = ch;
6027 continue;
6028 }
6029
6030 /* Either we are looking for the start of the here-doc delimiter
6031 (lex_firstind == -1) or we are reading one (lex_firstind >= 0).
6032 If this character is a shell break character and we are reading
6033 the delimiter, save it and note that we are now reading a here
6034 document. If we've found the start of the delimiter, note it by
6035 setting lex_firstind. Backslashes can quote shell metacharacters
6036 in here-doc delimiters. */
6037 if (tflags & LEX_HEREDELIM)
6038 {
6039 if (lex_firstind == -1 && shellbreak (ch) == 0)
6040 lex_firstind = retind;
6041 #if 0
6042 else if (heredelim && (tflags & LEX_PASSNEXT) == 0 && ch == '\n')
6043 {
6044 tflags |= LEX_INHEREDOC;
6045 tflags &= ~LEX_HEREDELIM;
6046 lex_firstind = retind + 1;
6047 }
6048 #endif
6049 else if (lex_firstind >= 0 && (tflags & LEX_PASSNEXT) == 0 && shellbreak (ch))
6050 {
6051 if (heredelim == 0)
6052 {
6053 nestret = substring (ret, lex_firstind, retind);
6054 heredelim = string_quote_removal (nestret, 0);
6055 free (nestret);
6056 hdlen = STRLEN(heredelim);
6057 /*itrace("parse_comsub:%d: found here doc delimiter `%s' (%d)", line_number, heredelim, hdlen);*/
6058 }
6059 if (ch == '\n')
6060 {
6061 tflags |= LEX_INHEREDOC;
6062 tflags &= ~LEX_HEREDELIM;
6063 lex_firstind = retind + 1;
6064 }
6065 else
6066 lex_firstind = -1;
6067 }
6068 }
6069
6070 /* Meta-characters that can introduce a reserved word. Not perfect yet. */
6071 if MBTEST((tflags & LEX_RESWDOK) == 0 && (tflags & LEX_CKCASE) && (tflags & LEX_INCOMMENT) == 0 && (shellmeta(ch) || ch == '\n'))
6072 {
6073 /* Add this character. */
6074 RESIZE_MALLOCED_BUFFER (ret, retind, 1, retsize, 64);
6075 ret[retind++] = ch;
6076 peekc = shell_getc (1);
6077 if (ch == peekc && (ch == '&' || ch == '|' || ch == ';')) /* two-character tokens */
6078 {
6079 RESIZE_MALLOCED_BUFFER (ret, retind, 1, retsize, 64);
6080 ret[retind++] = peekc;
6081 /*itrace("parse_comsub:%d: set lex_reswordok = 1, ch = `%c'", line_number, ch);*/
6082 tflags |= LEX_RESWDOK;
6083 lex_rwlen = 0;
6084 continue;
6085 }
6086 else if (ch == '\n' || COMSUB_META(ch))
6087 {
6088 shell_ungetc (peekc);
6089 /*itrace("parse_comsub:%d: set lex_reswordok = 1, ch = `%c'", line_number, ch);*/
6090 tflags |= LEX_RESWDOK;
6091 lex_rwlen = 0;
6092 continue;
6093 }
6094 else if (ch == EOF)
6095 goto eof_error;
6096 else
6097 {
6098 /* `unget' the character we just added and fall through */
6099 retind--;
6100 shell_ungetc (peekc);
6101 }
6102 }
6103
6104 /* If we can read a reserved word, try to read one. */
6105 if (tflags & LEX_RESWDOK)
6106 {
6107 if MBTEST(islower (ch))
6108 {
6109 /* Add this character. */
6110 RESIZE_MALLOCED_BUFFER (ret, retind, 1, retsize, 64);
6111 ret[retind++] = ch;
6112 lex_rwlen++;
6113 continue;
6114 }
6115 else if MBTEST(lex_rwlen == 4 && shellbreak (ch))
6116 {
6117 if (STREQN (ret + retind - 4, "case", 4))
6118 {
6119 tflags |= LEX_INCASE;
6120 /*itrace("parse_comsub:%d: found `case', lex_incase -> 1 lex_reswdok -> 0", line_number);*/
6121 }
6122 else if (STREQN (ret + retind - 4, "esac", 4))
6123 {
6124 tflags &= ~LEX_INCASE;
6125 /*itrace("parse_comsub:%d: found `esac', lex_incase -> 0 lex_reswdok -> 0", line_number);*/
6126 }
6127 tflags &= ~LEX_RESWDOK;
6128 }
6129 else if MBTEST((tflags & LEX_CKCOMMENT) && ch == '#' && (lex_rwlen == 0 || ((tflags & LEX_INWORD) && lex_wlen == 0)))
6130 ; /* don't modify LEX_RESWDOK if we're starting a comment */
6131 /* Allow `do' followed by space, tab, or newline to preserve the
6132 RESWDOK flag, but reset the reserved word length counter so we
6133 can read another one. */
6134 else if MBTEST(((tflags & LEX_INCASE) == 0) &&
6135 (isblank(ch) || ch == '\n') &&
6136 lex_rwlen == 2 &&
6137 STREQN (ret + retind - 2, "do", 2))
6138 {
6139 /*itrace("parse_comsub:%d: lex_incase == 1 found `%c', found \"do\"", line_number, ch);*/
6140 lex_rwlen = 0;
6141 }
6142 else if MBTEST((tflags & LEX_INCASE) && ch != '\n')
6143 /* If we can read a reserved word and we're in case, we're at the
6144 point where we can read a new pattern list or an esac. We
6145 handle the esac case above. If we read a newline, we want to
6146 leave LEX_RESWDOK alone. If we read anything else, we want to
6147 turn off LEX_RESWDOK, since we're going to read a pattern list. */
6148 {
6149 tflags &= ~LEX_RESWDOK;
6150 /*itrace("parse_comsub:%d: lex_incase == 1 found `%c', lex_reswordok -> 0", line_number, ch);*/
6151 }
6152 else if MBTEST(shellbreak (ch) == 0)
6153 {
6154 tflags &= ~LEX_RESWDOK;
6155 /*itrace("parse_comsub:%d: found `%c', lex_reswordok -> 0", line_number, ch);*/
6156 }
6157 #if 0
6158 /* If we find a space or tab but have read something and it's not
6159 `do', turn off the reserved-word-ok flag */
6160 else if MBTEST(isblank (ch) && lex_rwlen > 0)
6161 {
6162 tflags &= ~LEX_RESWDOK;
6163 /*itrace("parse_comsub:%d: found `%c', lex_reswordok -> 0", line_number, ch);*/
6164 }
6165 #endif
6166 }
6167
6168 /* Might be the start of a here-doc delimiter */
6169 if MBTEST((tflags & LEX_INCOMMENT) == 0 && (tflags & LEX_CKCASE) && ch == '<')
6170 {
6171 /* Add this character. */
6172 RESIZE_MALLOCED_BUFFER (ret, retind, 1, retsize, 64);
6173 ret[retind++] = ch;
6174 peekc = shell_getc (1);
6175 if (peekc == EOF)
6176 goto eof_error;
6177 if (peekc == ch)
6178 {
6179 RESIZE_MALLOCED_BUFFER (ret, retind, 1, retsize, 64);
6180 ret[retind++] = peekc;
6181 peekc = shell_getc (1);
6182 if (peekc == EOF)
6183 goto eof_error;
6184 if (peekc == '-')
6185 {
6186 RESIZE_MALLOCED_BUFFER (ret, retind, 1, retsize, 64);
6187 ret[retind++] = peekc;
6188 tflags |= LEX_STRIPDOC;
6189 }
6190 else
6191 shell_ungetc (peekc);
6192 if (peekc != '<')
6193 {
6194 tflags |= LEX_HEREDELIM;
6195 lex_firstind = -1;
6196 }
6197 continue;
6198 }
6199 else
6200 ch = peekc; /* fall through and continue XXX */
6201 }
6202 else if MBTEST((tflags & LEX_CKCOMMENT) && (tflags & LEX_INCOMMENT) == 0 && ch == '#' && (((tflags & LEX_RESWDOK) && lex_rwlen == 0) || ((tflags & LEX_INWORD) && lex_wlen == 0)))
6203 {
6204 /*itrace("parse_comsub:%d: lex_incomment -> 1 (%d)", line_number, __LINE__);*/
6205 tflags |= LEX_INCOMMENT;
6206 }
6207
6208 if MBTEST(ch == CTLESC || ch == CTLNUL) /* special shell escapes */
6209 {
6210 RESIZE_MALLOCED_BUFFER (ret, retind, 2, retsize, 64);
6211 ret[retind++] = CTLESC;
6212 ret[retind++] = ch;
6213 continue;
6214 }
6215 #if 0
6216 else if MBTEST((tflags & LEX_INCASE) && ch == close && close == ')')
6217 tflags &= ~LEX_INCASE; /* XXX */
6218 #endif
6219 else if MBTEST(ch == close && (tflags & LEX_INCASE) == 0) /* ending delimiter */
6220 {
6221 count--;
6222 /*itrace("parse_comsub:%d: found close: count = %d", line_number, count);*/
6223 }
6224 else if MBTEST(((flags & P_FIRSTCLOSE) == 0) && (tflags & LEX_INCASE) == 0 && ch == open) /* nested begin */
6225 {
6226 count++;
6227 /*itrace("parse_comsub:%d: found open: count = %d", line_number, count);*/
6228 }
6229
6230 /* Add this character. */
6231 RESIZE_MALLOCED_BUFFER (ret, retind, 1, retsize, 64);
6232 ret[retind++] = ch;
6233
6234 /* If we just read the ending character, don't bother continuing. */
6235 if (count == 0)
6236 break;
6237
6238 if MBTEST(ch == '\\') /* backslashes */
6239 tflags |= LEX_PASSNEXT;
6240
6241 if MBTEST(shellquote (ch))
6242 {
6243 /* '', ``, or "" inside $(...). */
6244 push_delimiter (dstack, ch);
6245 if MBTEST((tflags & LEX_WASDOL) && ch == '\'') /* $'...' inside group */
6246 nestret = parse_matched_pair (ch, ch, ch, &nestlen, P_ALLOWESC|rflags);
6247 else
6248 nestret = parse_matched_pair (ch, ch, ch, &nestlen, rflags);
6249 pop_delimiter (dstack);
6250 CHECK_NESTRET_ERROR ();
6251
6252 if MBTEST((tflags & LEX_WASDOL) && ch == '\'' && (extended_quote || (rflags & P_DQUOTE) == 0))
6253 {
6254 /* Translate $'...' here. */
6255 ttrans = ansiexpand (nestret, 0, nestlen - 1, &ttranslen);
6256 xfree (nestret);
6257
6258 if ((rflags & P_DQUOTE) == 0)
6259 {
6260 nestret = sh_single_quote (ttrans);
6261 free (ttrans);
6262 nestlen = strlen (nestret);
6263 }
6264 else
6265 {
6266 nestret = ttrans;
6267 nestlen = ttranslen;
6268 }
6269 retind -= 2; /* back up before the $' */
6270 }
6271 else if MBTEST((tflags & LEX_WASDOL) && ch == '"' && (extended_quote || (rflags & P_DQUOTE) == 0))
6272 {
6273 /* Locale expand $"..." here. */
6274 ttrans = localeexpand (nestret, 0, nestlen - 1, start_lineno, &ttranslen);
6275 xfree (nestret);
6276
6277 nestret = sh_mkdoublequoted (ttrans, ttranslen, 0);
6278 free (ttrans);
6279 nestlen = ttranslen + 2;
6280 retind -= 2; /* back up before the $" */
6281 }
6282
6283 APPEND_NESTRET ();
6284 FREE (nestret);
6285 }
6286 else if MBTEST((tflags & LEX_WASDOL) && (ch == '(' || ch == '{' || ch == '[')) /* ) } ] */
6287 /* check for $(), $[], or ${} inside command substitution. */
6288 {
6289 if ((tflags & LEX_INCASE) == 0 && open == ch) /* undo previous increment */
6290 count--;
6291 if (ch == '(') /* ) */
6292 nestret = parse_comsub (0, '(', ')', &nestlen, (rflags|P_COMMAND) & ~P_DQUOTE);
6293 else if (ch == '{') /* } */
6294 nestret = parse_matched_pair (0, '{', '}', &nestlen, P_FIRSTCLOSE|P_DOLBRACE|rflags);
6295 else if (ch == '[') /* ] */
6296 nestret = parse_matched_pair (0, '[', ']', &nestlen, rflags);
6297
6298 CHECK_NESTRET_ERROR ();
6299 APPEND_NESTRET ();
6300
6301 FREE (nestret);
6302 }
6303 if MBTEST(ch == '$')
6304 tflags |= LEX_WASDOL;
6305 else
6306 tflags &= ~LEX_WASDOL;
6307 }
6308
6309 FREE (heredelim);
6310 ret[retind] = '\0';
6311 if (lenp)
6312 *lenp = retind;
6313 /*itrace("parse_comsub:%d: returning `%s'", line_number, ret);*/
6314 return ret;
6315 }
6316
6317 /* Recursively call the parser to parse a $(...) command substitution. */
6318 char *
6319 xparse_dolparen (base, string, indp, flags)
6320 char *base;
6321 char *string;
6322 int *indp;
6323 int flags;
6324 {
6325 sh_parser_state_t ps;
6326 sh_input_line_state_t ls;
6327 int orig_ind, nc, sflags, orig_eof_token;
6328 char *ret, *s, *ep, *ostring;
6329
6330 /*yydebug = 1;*/
6331 orig_ind = *indp;
6332 ostring = string;
6333
6334 /*itrace("xparse_dolparen: size = %d shell_input_line = `%s'", shell_input_line_size, shell_input_line);*/
6335 sflags = SEVAL_NONINT|SEVAL_NOHIST|SEVAL_NOFREE;
6336 if (flags & SX_NOLONGJMP)
6337 sflags |= SEVAL_NOLONGJMP;
6338 save_parser_state (&ps);
6339 save_input_line_state (&ls);
6340 orig_eof_token = shell_eof_token;
6341
6342 /*(*/
6343 parser_state |= PST_CMDSUBST|PST_EOFTOKEN; /* allow instant ')' */ /*(*/
6344 shell_eof_token = ')';
6345 parse_string (string, "command substitution", sflags, &ep);
6346
6347 shell_eof_token = orig_eof_token;
6348 restore_parser_state (&ps);
6349 reset_parser ();
6350 /* reset_parser clears shell_input_line and associated variables */
6351 restore_input_line_state (&ls);
6352
6353 token_to_read = 0;
6354
6355 /* Need to find how many characters parse_and_execute consumed, update
6356 *indp, if flags != 0, copy the portion of the string parsed into RET
6357 and return it. If flags & 1 (EX_NOALLOC) we can return NULL. */
6358
6359 /*(*/
6360 if (ep[-1] != ')')
6361 {
6362 #if DEBUG
6363 if (ep[-1] != '\n')
6364 itrace("xparse_dolparen:%d: ep[-1] != RPAREN (%d), ep = `%s'", line_number, ep[-1], ep);
6365 #endif
6366 while (ep > ostring && ep[-1] == '\n') ep--;
6367 }
6368
6369 nc = ep - ostring;
6370 *indp = ep - base - 1;
6371
6372 /*(*/
6373 #if DEBUG
6374 if (base[*indp] != ')')
6375 itrace("xparse_dolparen:%d: base[%d] != RPAREN (%d), base = `%s'", line_number, *indp, base[*indp], base);
6376 #endif
6377
6378 if (flags & SX_NOALLOC)
6379 return (char *)NULL;
6380
6381 if (nc == 0)
6382 {
6383 ret = xmalloc (1);
6384 ret[0] = '\0';
6385 }
6386 else
6387 ret = substring (ostring, 0, nc - 1);
6388
6389 return ret;
6390 }
6391
6392 #if defined (DPAREN_ARITHMETIC) || defined (ARITH_FOR_COMMAND)
6393 /* Parse a double-paren construct. It can be either an arithmetic
6394 command, an arithmetic `for' command, or a nested subshell. Returns
6395 the parsed token, -1 on error, or -2 if we didn't do anything and
6396 should just go on. */
6397 static int
6398 parse_dparen (c)
6399 int c;
6400 {
6401 int cmdtyp, sline;
6402 char *wval;
6403 WORD_DESC *wd;
6404
6405 #if defined (ARITH_FOR_COMMAND)
6406 if (last_read_token == FOR)
6407 {
6408 arith_for_lineno = line_number;
6409 cmdtyp = parse_arith_cmd (&wval, 0);
6410 if (cmdtyp == 1)
6411 {
6412 wd = alloc_word_desc ();
6413 wd->word = wval;
6414 yylval.word_list = make_word_list (wd, (WORD_LIST *)NULL);
6415 return (ARITH_FOR_EXPRS);
6416 }
6417 else
6418 return -1; /* ERROR */
6419 }
6420 #endif
6421
6422 #if defined (DPAREN_ARITHMETIC)
6423 if (reserved_word_acceptable (last_read_token))
6424 {
6425 sline = line_number;
6426
6427 cmdtyp = parse_arith_cmd (&wval, 0);
6428 if (cmdtyp == 1) /* arithmetic command */
6429 {
6430 wd = alloc_word_desc ();
6431 wd->word = wval;
6432 wd->flags = W_QUOTED|W_NOSPLIT|W_NOGLOB|W_DQUOTE;
6433 yylval.word_list = make_word_list (wd, (WORD_LIST *)NULL);
6434 return (ARITH_CMD);
6435 }
6436 else if (cmdtyp == 0) /* nested subshell */
6437 {
6438 push_string (wval, 0, (alias_t *)NULL);
6439 pushed_string_list->flags = PSH_DPAREN;
6440 if ((parser_state & PST_CASEPAT) == 0)
6441 parser_state |= PST_SUBSHELL;
6442 return (c);
6443 }
6444 else /* ERROR */
6445 return -1;
6446 }
6447 #endif
6448
6449 return -2; /* XXX */
6450 }
6451
6452 /* We've seen a `(('. Look for the matching `))'. If we get it, return 1.
6453 If not, assume it's a nested subshell for backwards compatibility and
6454 return 0. In any case, put the characters we've consumed into a locally-
6455 allocated buffer and make *ep point to that buffer. Return -1 on an
6456 error, for example EOF. */
6457 static int
6458 parse_arith_cmd (ep, adddq)
6459 char **ep;
6460 int adddq;
6461 {
6462 int exp_lineno, rval, c;
6463 char *ttok, *tokstr;
6464 int ttoklen;
6465
6466 exp_lineno = line_number;
6467 ttok = parse_matched_pair (0, '(', ')', &ttoklen, 0);
6468 rval = 1;
6469 if (ttok == &matched_pair_error)
6470 return -1;
6471 /* Check that the next character is the closing right paren. If
6472 not, this is a syntax error. ( */
6473 c = shell_getc (0);
6474 if MBTEST(c != ')')
6475 rval = 0;
6476
6477 tokstr = (char *)xmalloc (ttoklen + 4);
6478
6479 /* if ADDDQ != 0 then (( ... )) -> "..." */
6480 if (rval == 1 && adddq) /* arith cmd, add double quotes */
6481 {
6482 tokstr[0] = '"';
6483 strncpy (tokstr + 1, ttok, ttoklen - 1);
6484 tokstr[ttoklen] = '"';
6485 tokstr[ttoklen+1] = '\0';
6486 }
6487 else if (rval == 1) /* arith cmd, don't add double quotes */
6488 {
6489 strncpy (tokstr, ttok, ttoklen - 1);
6490 tokstr[ttoklen-1] = '\0';
6491 }
6492 else /* nested subshell */
6493 {
6494 tokstr[0] = '(';
6495 strncpy (tokstr + 1, ttok, ttoklen - 1);
6496 tokstr[ttoklen] = ')';
6497 tokstr[ttoklen+1] = c;
6498 tokstr[ttoklen+2] = '\0';
6499 }
6500
6501 *ep = tokstr;
6502 FREE (ttok);
6503 return rval;
6504 }
6505 #endif /* DPAREN_ARITHMETIC || ARITH_FOR_COMMAND */
6506
6507 #if defined (COND_COMMAND)
6508 static void
6509 cond_error ()
6510 {
6511 char *etext;
6512
6513 if (EOF_Reached && cond_token != COND_ERROR) /* [[ */
6514 parser_error (cond_lineno, _("unexpected EOF while looking for `]]'"));
6515 else if (cond_token != COND_ERROR)
6516 {
6517 if (etext = error_token_from_token (cond_token))
6518 {
6519 parser_error (cond_lineno, _("syntax error in conditional expression: unexpected token `%s'"), etext);
6520 free (etext);
6521 }
6522 else
6523 parser_error (cond_lineno, _("syntax error in conditional expression"));
6524 }
6525 }
6526
6527 static COND_COM *
6528 cond_expr ()
6529 {
6530 return (cond_or ());
6531 }
6532
6533 static COND_COM *
6534 cond_or ()
6535 {
6536 COND_COM *l, *r;
6537
6538 l = cond_and ();
6539 if (cond_token == OR_OR)
6540 {
6541 r = cond_or ();
6542 l = make_cond_node (COND_OR, (WORD_DESC *)NULL, l, r);
6543 }
6544 return l;
6545 }
6546
6547 static COND_COM *
6548 cond_and ()
6549 {
6550 COND_COM *l, *r;
6551
6552 l = cond_term ();
6553 if (cond_token == AND_AND)
6554 {
6555 r = cond_and ();
6556 l = make_cond_node (COND_AND, (WORD_DESC *)NULL, l, r);
6557 }
6558 return l;
6559 }
6560
6561 static int
6562 cond_skip_newlines ()
6563 {
6564 while ((cond_token = read_token (READ)) == '\n')
6565 {
6566 if (SHOULD_PROMPT ())
6567 prompt_again ();
6568 }
6569 return (cond_token);
6570 }
6571
6572 #define COND_RETURN_ERROR() \
6573 do { cond_token = COND_ERROR; return ((COND_COM *)NULL); } while (0)
6574
6575 static COND_COM *
6576 cond_term ()
6577 {
6578 WORD_DESC *op;
6579 COND_COM *term, *tleft, *tright;
6580 int tok, lineno;
6581 char *etext;
6582
6583 /* Read a token. It can be a left paren, a `!', a unary operator, or a
6584 word that should be the first argument of a binary operator. Start by
6585 skipping newlines, since this is a compound command. */
6586 tok = cond_skip_newlines ();
6587 lineno = line_number;
6588 if (tok == COND_END)
6589 {
6590 COND_RETURN_ERROR ();
6591 }
6592 else if (tok == '(')
6593 {
6594 term = cond_expr ();
6595 if (cond_token != ')')
6596 {
6597 if (term)
6598 dispose_cond_node (term); /* ( */
6599 if (etext = error_token_from_token (cond_token))
6600 {
6601 parser_error (lineno, _("unexpected token `%s', expected `)'"), etext);
6602 free (etext);
6603 }
6604 else
6605 parser_error (lineno, _("expected `)'"));
6606 COND_RETURN_ERROR ();
6607 }
6608 term = make_cond_node (COND_EXPR, (WORD_DESC *)NULL, term, (COND_COM *)NULL);
6609 (void)cond_skip_newlines ();
6610 }
6611 else if (tok == BANG || (tok == WORD && (yylval.word->word[0] == '!' && yylval.word->word[1] == '\0')))
6612 {
6613 if (tok == WORD)
6614 dispose_word (yylval.word); /* not needed */
6615 term = cond_term ();
6616 if (term)
6617 term->flags |= CMD_INVERT_RETURN;
6618 }
6619 else if (tok == WORD && yylval.word->word[0] == '-' && yylval.word->word[2] == 0 && test_unop (yylval.word->word))
6620 {
6621 op = yylval.word;
6622 tok = read_token (READ);
6623 if (tok == WORD)
6624 {
6625 tleft = make_cond_node (COND_TERM, yylval.word, (COND_COM *)NULL, (COND_COM *)NULL);
6626 term = make_cond_node (COND_UNARY, op, tleft, (COND_COM *)NULL);
6627 }
6628 else
6629 {
6630 dispose_word (op);
6631 if (etext = error_token_from_token (tok))
6632 {
6633 parser_error (line_number, _("unexpected argument `%s' to conditional unary operator"), etext);
6634 free (etext);
6635 }
6636 else
6637 parser_error (line_number, _("unexpected argument to conditional unary operator"));
6638 COND_RETURN_ERROR ();
6639 }
6640
6641 (void)cond_skip_newlines ();
6642 }
6643 else if (tok == WORD) /* left argument to binary operator */
6644 {
6645 /* lhs */
6646 tleft = make_cond_node (COND_TERM, yylval.word, (COND_COM *)NULL, (COND_COM *)NULL);
6647
6648 /* binop */
6649 tok = read_token (READ);
6650 if (tok == WORD && test_binop (yylval.word->word))
6651 {
6652 op = yylval.word;
6653 if (op->word[0] == '=' && (op->word[1] == '\0' || (op->word[1] == '=' && op->word[2] == '\0')))
6654 parser_state |= PST_EXTPAT;
6655 else if (op->word[0] == '!' && op->word[1] == '=' && op->word[2] == '\0')
6656 parser_state |= PST_EXTPAT;
6657 }
6658 #if defined (COND_REGEXP)
6659 else if (tok == WORD && STREQ (yylval.word->word, "=~"))
6660 {
6661 op = yylval.word;
6662 parser_state |= PST_REGEXP;
6663 }
6664 #endif
6665 else if (tok == '<' || tok == '>')
6666 op = make_word_from_token (tok); /* ( */
6667 /* There should be a check before blindly accepting the `)' that we have
6668 seen the opening `('. */
6669 else if (tok == COND_END || tok == AND_AND || tok == OR_OR || tok == ')')
6670 {
6671 /* Special case. [[ x ]] is equivalent to [[ -n x ]], just like
6672 the test command. Similarly for [[ x && expr ]] or
6673 [[ x || expr ]] or [[ (x) ]]. */
6674 op = make_word ("-n");
6675 term = make_cond_node (COND_UNARY, op, tleft, (COND_COM *)NULL);
6676 cond_token = tok;
6677 return (term);
6678 }
6679 else
6680 {
6681 if (etext = error_token_from_token (tok))
6682 {
6683 parser_error (line_number, _("unexpected token `%s', conditional binary operator expected"), etext);
6684 free (etext);
6685 }
6686 else
6687 parser_error (line_number, _("conditional binary operator expected"));
6688 dispose_cond_node (tleft);
6689 COND_RETURN_ERROR ();
6690 }
6691
6692 /* rhs */
6693 if (parser_state & PST_EXTPAT)
6694 extended_glob = 1;
6695 tok = read_token (READ);
6696 if (parser_state & PST_EXTPAT)
6697 extended_glob = global_extglob;
6698 parser_state &= ~(PST_REGEXP|PST_EXTPAT);
6699
6700 if (tok == WORD)
6701 {
6702 tright = make_cond_node (COND_TERM, yylval.word, (COND_COM *)NULL, (COND_COM *)NULL);
6703 term = make_cond_node (COND_BINARY, op, tleft, tright);
6704 }
6705 else
6706 {
6707 if (etext = error_token_from_token (tok))
6708 {
6709 parser_error (line_number, _("unexpected argument `%s' to conditional binary operator"), etext);
6710 free (etext);
6711 }
6712 else
6713 parser_error (line_number, _("unexpected argument to conditional binary operator"));
6714 dispose_cond_node (tleft);
6715 dispose_word (op);
6716 COND_RETURN_ERROR ();
6717 }
6718
6719 (void)cond_skip_newlines ();
6720 }
6721 else
6722 {
6723 if (tok < 256)
6724 parser_error (line_number, _("unexpected token `%c' in conditional command"), tok);
6725 else if (etext = error_token_from_token (tok))
6726 {
6727 parser_error (line_number, _("unexpected token `%s' in conditional command"), etext);
6728 free (etext);
6729 }
6730 else
6731 parser_error (line_number, _("unexpected token %d in conditional command"), tok);
6732 COND_RETURN_ERROR ();
6733 }
6734 return (term);
6735 }
6736
6737 /* This is kind of bogus -- we slip a mini recursive-descent parser in
6738 here to handle the conditional statement syntax. */
6739 static COMMAND *
6740 parse_cond_command ()
6741 {
6742 COND_COM *cexp;
6743
6744 global_extglob = extended_glob;
6745 cexp = cond_expr ();
6746 return (make_cond_command (cexp));
6747 }
6748 #endif
6749
6750 #if defined (ARRAY_VARS)
6751 /* When this is called, it's guaranteed that we don't care about anything
6752 in t beyond i. We do save and restore the chars, though. */
6753 static int
6754 token_is_assignment (t, i)
6755 char *t;
6756 int i;
6757 {
6758 unsigned char c, c1;
6759 int r;
6760
6761 c = t[i]; c1 = t[i+1];
6762 t[i] = '='; t[i+1] = '\0';
6763 r = assignment (t, (parser_state & PST_COMPASSIGN) != 0);
6764 t[i] = c; t[i+1] = c1;
6765 return r;
6766 }
6767
6768 /* XXX - possible changes here for `+=' */
6769 static int
6770 token_is_ident (t, i)
6771 char *t;
6772 int i;
6773 {
6774 unsigned char c;
6775 int r;
6776
6777 c = t[i];
6778 t[i] = '\0';
6779 r = legal_identifier (t);
6780 t[i] = c;
6781 return r;
6782 }
6783 #endif
6784
6785 static int
6786 read_token_word (character)
6787 int character;
6788 {
6789 /* The value for YYLVAL when a WORD is read. */
6790 WORD_DESC *the_word;
6791
6792 /* Index into the token that we are building. */
6793 int token_index;
6794
6795 /* ALL_DIGITS becomes zero when we see a non-digit. */
6796 int all_digit_token;
6797
6798 /* DOLLAR_PRESENT becomes non-zero if we see a `$'. */
6799 int dollar_present;
6800
6801 /* COMPOUND_ASSIGNMENT becomes non-zero if we are parsing a compound
6802 assignment. */
6803 int compound_assignment;
6804
6805 /* QUOTED becomes non-zero if we see one of ("), ('), (`), or (\). */
6806 int quoted;
6807
6808 /* Non-zero means to ignore the value of the next character, and just
6809 to add it no matter what. */
6810 int pass_next_character;
6811
6812 /* The current delimiting character. */
6813 int cd;
6814 int result, peek_char;
6815 char *ttok, *ttrans;
6816 int ttoklen, ttranslen;
6817 intmax_t lvalue;
6818
6819 if (token_buffer_size < TOKEN_DEFAULT_INITIAL_SIZE)
6820 token = (char *)xrealloc (token, token_buffer_size = TOKEN_DEFAULT_INITIAL_SIZE);
6821
6822 token_index = 0;
6823 all_digit_token = DIGIT (character);
6824 dollar_present = quoted = pass_next_character = compound_assignment = 0;
6825
6826 for (;;)
6827 {
6828 if (character == EOF)
6829 goto got_token;
6830
6831 if (pass_next_character)
6832 {
6833 pass_next_character = 0;
6834 goto got_escaped_character;
6835 }
6836
6837 cd = current_delimiter (dstack);
6838
6839 /* Handle backslashes. Quote lots of things when not inside of
6840 double-quotes, quote some things inside of double-quotes. */
6841 if MBTEST(character == '\\')
6842 {
6843 peek_char = shell_getc (0);
6844
6845 /* Backslash-newline is ignored in all cases except
6846 when quoted with single quotes. */
6847 if (peek_char == '\n')
6848 {
6849 character = '\n';
6850 goto next_character;
6851 }
6852 else
6853 {
6854 shell_ungetc (peek_char);
6855
6856 /* If the next character is to be quoted, note it now. */
6857 if (cd == 0 || cd == '`' ||
6858 (cd == '"' && peek_char >= 0 && (sh_syntaxtab[peek_char] & CBSDQUOTE)))
6859 pass_next_character++;
6860
6861 quoted = 1;
6862 goto got_character;
6863 }
6864 }
6865
6866 /* Parse a matched pair of quote characters. */
6867 if MBTEST(shellquote (character))
6868 {
6869 push_delimiter (dstack, character);
6870 ttok = parse_matched_pair (character, character, character, &ttoklen, (character == '`') ? P_COMMAND : 0);
6871 pop_delimiter (dstack);
6872 if (ttok == &matched_pair_error)
6873 return -1; /* Bail immediately. */
6874 RESIZE_MALLOCED_BUFFER (token, token_index, ttoklen + 2,
6875 token_buffer_size, TOKEN_DEFAULT_GROW_SIZE);
6876 token[token_index++] = character;
6877 strcpy (token + token_index, ttok);
6878 token_index += ttoklen;
6879 all_digit_token = 0;
6880 quoted = 1;
6881 dollar_present |= (character == '"' && strchr (ttok, '$') != 0);
6882 FREE (ttok);
6883 goto next_character;
6884 }
6885
6886 #ifdef COND_REGEXP
6887 /* When parsing a regexp as a single word inside a conditional command,
6888 we need to special-case characters special to both the shell and
6889 regular expressions. Right now, that is only '(' and '|'. */ /*)*/
6890 if MBTEST((parser_state & PST_REGEXP) && (character == '(' || character == '|')) /*)*/
6891 {
6892 if (character == '|')
6893 goto got_character;
6894
6895 push_delimiter (dstack, character);
6896 ttok = parse_matched_pair (cd, '(', ')', &ttoklen, 0);
6897 pop_delimiter (dstack);
6898 if (ttok == &matched_pair_error)
6899 return -1; /* Bail immediately. */
6900 RESIZE_MALLOCED_BUFFER (token, token_index, ttoklen + 2,
6901 token_buffer_size, TOKEN_DEFAULT_GROW_SIZE);
6902 token[token_index++] = character;
6903 strcpy (token + token_index, ttok);
6904 token_index += ttoklen;
6905 FREE (ttok);
6906 dollar_present = all_digit_token = 0;
6907 goto next_character;
6908 }
6909 #endif /* COND_REGEXP */
6910
6911 #ifdef EXTENDED_GLOB
6912 /* Parse a ksh-style extended pattern matching specification. */
6913 if MBTEST(extended_glob && PATTERN_CHAR (character))
6914 {
6915 peek_char = shell_getc (1);
6916 if MBTEST(peek_char == '(') /* ) */
6917 {
6918 push_delimiter (dstack, peek_char);
6919 ttok = parse_matched_pair (cd, '(', ')', &ttoklen, 0);
6920 pop_delimiter (dstack);
6921 if (ttok == &matched_pair_error)
6922 return -1; /* Bail immediately. */
6923 RESIZE_MALLOCED_BUFFER (token, token_index, ttoklen + 3,
6924 token_buffer_size,
6925 TOKEN_DEFAULT_GROW_SIZE);
6926 token[token_index++] = character;
6927 token[token_index++] = peek_char;
6928 strcpy (token + token_index, ttok);
6929 token_index += ttoklen;
6930 FREE (ttok);
6931 dollar_present = all_digit_token = 0;
6932 goto next_character;
6933 }
6934 else
6935 shell_ungetc (peek_char);
6936 }
6937 #endif /* EXTENDED_GLOB */
6938
6939 /* If the delimiter character is not single quote, parse some of
6940 the shell expansions that must be read as a single word. */
6941 if (shellexp (character))
6942 {
6943 peek_char = shell_getc (1);
6944 /* $(...), <(...), >(...), $((...)), ${...}, and $[...] constructs */
6945 if MBTEST(peek_char == '(' ||
6946 ((peek_char == '{' || peek_char == '[') && character == '$')) /* ) ] } */
6947 {
6948 if (peek_char == '{') /* } */
6949 ttok = parse_matched_pair (cd, '{', '}', &ttoklen, P_FIRSTCLOSE|P_DOLBRACE);
6950 else if (peek_char == '(') /* ) */
6951 {
6952 /* XXX - push and pop the `(' as a delimiter for use by
6953 the command-oriented-history code. This way newlines
6954 appearing in the $(...) string get added to the
6955 history literally rather than causing a possibly-
6956 incorrect `;' to be added. ) */
6957 push_delimiter (dstack, peek_char);
6958 ttok = parse_comsub (cd, '(', ')', &ttoklen, P_COMMAND);
6959 pop_delimiter (dstack);
6960 }
6961 else
6962 ttok = parse_matched_pair (cd, '[', ']', &ttoklen, 0);
6963 if (ttok == &matched_pair_error)
6964 return -1; /* Bail immediately. */
6965 RESIZE_MALLOCED_BUFFER (token, token_index, ttoklen + 3,
6966 token_buffer_size,
6967 TOKEN_DEFAULT_GROW_SIZE);
6968 token[token_index++] = character;
6969 token[token_index++] = peek_char;
6970 strcpy (token + token_index, ttok);
6971 token_index += ttoklen;
6972 FREE (ttok);
6973 dollar_present = 1;
6974 all_digit_token = 0;
6975 goto next_character;
6976 }
6977 /* This handles $'...' and $"..." new-style quoted strings. */
6978 else if MBTEST(character == '$' && (peek_char == '\'' || peek_char == '"'))
6979 {
6980 int first_line;
6981
6982 first_line = line_number;
6983 push_delimiter (dstack, peek_char);
6984 ttok = parse_matched_pair (peek_char, peek_char, peek_char,
6985 &ttoklen,
6986 (peek_char == '\'') ? P_ALLOWESC : 0);
6987 pop_delimiter (dstack);
6988 if (ttok == &matched_pair_error)
6989 return -1;
6990 if (peek_char == '\'')
6991 {
6992 ttrans = ansiexpand (ttok, 0, ttoklen - 1, &ttranslen);
6993 free (ttok);
6994
6995 /* Insert the single quotes and correctly quote any
6996 embedded single quotes (allowed because P_ALLOWESC was
6997 passed to parse_matched_pair). */
6998 ttok = sh_single_quote (ttrans);
6999 free (ttrans);
7000 ttranslen = strlen (ttok);
7001 ttrans = ttok;
7002 }
7003 else
7004 {
7005 /* Try to locale-expand the converted string. */
7006 ttrans = localeexpand (ttok, 0, ttoklen - 1, first_line, &ttranslen);
7007 free (ttok);
7008
7009 /* Add the double quotes back */
7010 ttok = sh_mkdoublequoted (ttrans, ttranslen, 0);
7011 free (ttrans);
7012 ttranslen += 2;
7013 ttrans = ttok;
7014 }
7015
7016 RESIZE_MALLOCED_BUFFER (token, token_index, ttranslen + 1,
7017 token_buffer_size,
7018 TOKEN_DEFAULT_GROW_SIZE);
7019 strcpy (token + token_index, ttrans);
7020 token_index += ttranslen;
7021 FREE (ttrans);
7022 quoted = 1;
7023 all_digit_token = 0;
7024 goto next_character;
7025 }
7026 /* This could eventually be extended to recognize all of the
7027 shell's single-character parameter expansions, and set flags.*/
7028 else if MBTEST(character == '$' && peek_char == '$')
7029 {
7030 RESIZE_MALLOCED_BUFFER (token, token_index, 3,
7031 token_buffer_size,
7032 TOKEN_DEFAULT_GROW_SIZE);
7033 token[token_index++] = '$';
7034 token[token_index++] = peek_char;
7035 dollar_present = 1;
7036 all_digit_token = 0;
7037 goto next_character;
7038 }
7039 else
7040 shell_ungetc (peek_char);
7041 }
7042
7043 #if defined (ARRAY_VARS)
7044 /* Identify possible array subscript assignment; match [...]. If
7045 parser_state&PST_COMPASSIGN, we need to parse [sub]=words treating
7046 `sub' as if it were enclosed in double quotes. */
7047 else if MBTEST(character == '[' && /* ] */
7048 ((token_index > 0 && assignment_acceptable (last_read_token) && token_is_ident (token, token_index)) ||
7049 (token_index == 0 && (parser_state&PST_COMPASSIGN))))
7050 {
7051 ttok = parse_matched_pair (cd, '[', ']', &ttoklen, P_ARRAYSUB);
7052 if (ttok == &matched_pair_error)
7053 return -1; /* Bail immediately. */
7054 RESIZE_MALLOCED_BUFFER (token, token_index, ttoklen + 2,
7055 token_buffer_size,
7056 TOKEN_DEFAULT_GROW_SIZE);
7057 token[token_index++] = character;
7058 strcpy (token + token_index, ttok);
7059 token_index += ttoklen;
7060 FREE (ttok);
7061 all_digit_token = 0;
7062 goto next_character;
7063 }
7064 /* Identify possible compound array variable assignment. */
7065 else if MBTEST(character == '=' && token_index > 0 && (assignment_acceptable (last_read_token) || (parser_state & PST_ASSIGNOK)) && token_is_assignment (token, token_index))
7066 {
7067 peek_char = shell_getc (1);
7068 if MBTEST(peek_char == '(') /* ) */
7069 {
7070 ttok = parse_compound_assignment (&ttoklen);
7071
7072 RESIZE_MALLOCED_BUFFER (token, token_index, ttoklen + 4,
7073 token_buffer_size,
7074 TOKEN_DEFAULT_GROW_SIZE);
7075
7076 token[token_index++] = '=';
7077 token[token_index++] = '(';
7078 if (ttok)
7079 {
7080 strcpy (token + token_index, ttok);
7081 token_index += ttoklen;
7082 }
7083 token[token_index++] = ')';
7084 FREE (ttok);
7085 all_digit_token = 0;
7086 compound_assignment = 1;
7087 #if 1
7088 goto next_character;
7089 #else
7090 goto got_token; /* ksh93 seems to do this */
7091 #endif
7092 }
7093 else
7094 shell_ungetc (peek_char);
7095 }
7096 #endif
7097
7098 /* When not parsing a multi-character word construct, shell meta-
7099 characters break words. */
7100 if MBTEST(shellbreak (character))
7101 {
7102 shell_ungetc (character);
7103 goto got_token;
7104 }
7105
7106 got_character:
7107
7108 if (character == CTLESC || character == CTLNUL)
7109 {
7110 RESIZE_MALLOCED_BUFFER (token, token_index, 2, token_buffer_size,
7111 TOKEN_DEFAULT_GROW_SIZE);
7112 token[token_index++] = CTLESC;
7113 }
7114 else
7115 got_escaped_character:
7116 RESIZE_MALLOCED_BUFFER (token, token_index, 1, token_buffer_size,
7117 TOKEN_DEFAULT_GROW_SIZE);
7118
7119 token[token_index++] = character;
7120
7121 all_digit_token &= DIGIT (character);
7122 dollar_present |= character == '$';
7123
7124 next_character:
7125 if (character == '\n' && SHOULD_PROMPT ())
7126 prompt_again ();
7127
7128 /* We want to remove quoted newlines (that is, a \<newline> pair)
7129 unless we are within single quotes or pass_next_character is
7130 set (the shell equivalent of literal-next). */
7131 cd = current_delimiter (dstack);
7132 character = shell_getc (cd != '\'' && pass_next_character == 0);
7133 } /* end for (;;) */
7134
7135 got_token:
7136
7137 /* Calls to RESIZE_MALLOCED_BUFFER ensure there is sufficient room. */
7138 token[token_index] = '\0';
7139
7140 /* Check to see what thing we should return. If the last_read_token
7141 is a `<', or a `&', or the character which ended this token is
7142 a '>' or '<', then, and ONLY then, is this input token a NUMBER.
7143 Otherwise, it is just a word, and should be returned as such. */
7144 if MBTEST(all_digit_token && (character == '<' || character == '>' ||
7145 last_read_token == LESS_AND ||
7146 last_read_token == GREATER_AND))
7147 {
7148 if (legal_number (token, &lvalue) && (int)lvalue == lvalue)
7149 {
7150 yylval.number = lvalue;
7151 return (NUMBER);
7152 }
7153 }
7154
7155 /* Check for special case tokens. */
7156 result = (last_shell_getc_is_singlebyte) ? special_case_tokens (token) : -1;
7157 if (result >= 0)
7158 return result;
7159
7160 #if defined (ALIAS)
7161 /* Posix.2 does not allow reserved words to be aliased, so check for all
7162 of them, including special cases, before expanding the current token
7163 as an alias. */
7164 if MBTEST(posixly_correct)
7165 CHECK_FOR_RESERVED_WORD (token);
7166
7167 /* Aliases are expanded iff EXPAND_ALIASES is non-zero, and quoting
7168 inhibits alias expansion. */
7169 if (expand_aliases && quoted == 0)
7170 {
7171 result = alias_expand_token (token);
7172 if (result == RE_READ_TOKEN)
7173 return (RE_READ_TOKEN);
7174 else if (result == NO_EXPANSION)
7175 parser_state &= ~PST_ALEXPNEXT;
7176 }
7177
7178 /* If not in Posix.2 mode, check for reserved words after alias
7179 expansion. */
7180 if MBTEST(posixly_correct == 0)
7181 #endif
7182 CHECK_FOR_RESERVED_WORD (token);
7183
7184 the_word = (WORD_DESC *)xmalloc (sizeof (WORD_DESC));
7185 the_word->word = (char *)xmalloc (1 + token_index);
7186 the_word->flags = 0;
7187 strcpy (the_word->word, token);
7188 if (dollar_present)
7189 the_word->flags |= W_HASDOLLAR;
7190 if (quoted)
7191 the_word->flags |= W_QUOTED; /*(*/
7192 if (compound_assignment && token[token_index-1] == ')')
7193 the_word->flags |= W_COMPASSIGN;
7194 /* A word is an assignment if it appears at the beginning of a
7195 simple command, or after another assignment word. This is
7196 context-dependent, so it cannot be handled in the grammar. */
7197 if (assignment (token, (parser_state & PST_COMPASSIGN) != 0))
7198 {
7199 the_word->flags |= W_ASSIGNMENT;
7200 /* Don't perform word splitting on assignment statements. */
7201 if (assignment_acceptable (last_read_token) || (parser_state & PST_COMPASSIGN) != 0)
7202 {
7203 the_word->flags |= W_NOSPLIT;
7204 if (parser_state & PST_COMPASSIGN)
7205 the_word->flags |= W_NOGLOB; /* XXX - W_NOBRACE? */
7206 }
7207 }
7208
7209 if (command_token_position (last_read_token))
7210 {
7211 struct builtin *b;
7212 b = builtin_address_internal (token, 0);
7213 if (b && (b->flags & ASSIGNMENT_BUILTIN))
7214 parser_state |= PST_ASSIGNOK;
7215 else if (STREQ (token, "eval") || STREQ (token, "let"))
7216 parser_state |= PST_ASSIGNOK;
7217 }
7218
7219 yylval.word = the_word;
7220
7221 if (token[0] == '{' && token[token_index-1] == '}' &&
7222 (character == '<' || character == '>'))
7223 {
7224 /* can use token; already copied to the_word */
7225 token[token_index-1] = '\0';
7226 #if defined (ARRAY_VARS)
7227 if (legal_identifier (token+1) || valid_array_reference (token+1))
7228 #else
7229 if (legal_identifier (token+1))
7230 #endif
7231 {
7232 strcpy (the_word->word, token+1);
7233 /*itrace("read_token_word: returning REDIR_WORD for %s", the_word->word);*/
7234 return (REDIR_WORD);
7235 }
7236 }
7237
7238 result = ((the_word->flags & (W_ASSIGNMENT|W_NOSPLIT)) == (W_ASSIGNMENT|W_NOSPLIT))
7239 ? ASSIGNMENT_WORD : WORD;
7240
7241 switch (last_read_token)
7242 {
7243 case FUNCTION:
7244 parser_state |= PST_ALLOWOPNBRC;
7245 function_dstart = line_number;
7246 break;
7247 case CASE:
7248 case SELECT:
7249 case FOR:
7250 if (word_top < MAX_CASE_NEST)
7251 word_top++;
7252 word_lineno[word_top] = line_number;
7253 break;
7254 }
7255
7256 return (result);
7257 }
7258
7259 /* Return 1 if TOKSYM is a token that after being read would allow
7260 a reserved word to be seen, else 0. */
7261 static int
7262 reserved_word_acceptable (toksym)
7263 int toksym;
7264 {
7265 switch (toksym)
7266 {
7267 case '\n':
7268 case ';':
7269 case '(':
7270 case ')':
7271 case '|':
7272 case '&':
7273 case '{':
7274 case '}': /* XXX */
7275 case AND_AND:
7276 case BANG:
7277 case BAR_AND:
7278 case DO:
7279 case DONE:
7280 case ELIF:
7281 case ELSE:
7282 case ESAC:
7283 case FI:
7284 case IF:
7285 case OR_OR:
7286 case SEMI_SEMI:
7287 case SEMI_AND:
7288 case SEMI_SEMI_AND:
7289 case THEN:
7290 case TIME:
7291 case TIMEOPT:
7292 case TIMEIGN:
7293 case COPROC:
7294 case UNTIL:
7295 case WHILE:
7296 case 0:
7297 return 1;
7298 default:
7299 #if defined (COPROCESS_SUPPORT)
7300 if (last_read_token == WORD && token_before_that == COPROC)
7301 return 1;
7302 #endif
7303 if (last_read_token == WORD && token_before_that == FUNCTION)
7304 return 1;
7305 return 0;
7306 }
7307 }
7308
7309 /* Return the index of TOKEN in the alist of reserved words, or -1 if
7310 TOKEN is not a shell reserved word. */
7311 int
7312 find_reserved_word (tokstr)
7313 char *tokstr;
7314 {
7315 int i;
7316 for (i = 0; word_token_alist[i].word; i++)
7317 if (STREQ (tokstr, word_token_alist[i].word))
7318 return i;
7319 return -1;
7320 }
7321
7322 /* An interface to let the rest of the shell (primarily the completion
7323 system) know what the parser is expecting. */
7324 int
7325 parser_in_command_position ()
7326 {
7327 return (command_token_position (last_read_token));
7328 }
7329
7330 #if 0
7331 #if defined (READLINE)
7332 /* Called after each time readline is called. This insures that whatever
7333 the new prompt string is gets propagated to readline's local prompt
7334 variable. */
7335 static void
7336 reset_readline_prompt ()
7337 {
7338 char *temp_prompt;
7339
7340 if (prompt_string_pointer)
7341 {
7342 temp_prompt = (*prompt_string_pointer)
7343 ? decode_prompt_string (*prompt_string_pointer)
7344 : (char *)NULL;
7345
7346 if (temp_prompt == 0)
7347 {
7348 temp_prompt = (char *)xmalloc (1);
7349 temp_prompt[0] = '\0';
7350 }
7351
7352 FREE (current_readline_prompt);
7353 current_readline_prompt = temp_prompt;
7354 }
7355 }
7356 #endif /* READLINE */
7357 #endif /* 0 */
7358
7359 #if defined (HISTORY)
7360 /* A list of tokens which can be followed by newlines, but not by
7361 semi-colons. When concatenating multiple lines of history, the
7362 newline separator for such tokens is replaced with a space. */
7363 static const int no_semi_successors[] = {
7364 '\n', '{', '(', ')', ';', '&', '|',
7365 CASE, DO, ELSE, IF, SEMI_SEMI, SEMI_AND, SEMI_SEMI_AND, THEN, UNTIL,
7366 WHILE, AND_AND, OR_OR, IN,
7367 0
7368 };
7369
7370 /* If we are not within a delimited expression, try to be smart
7371 about which separators can be semi-colons and which must be
7372 newlines. Returns the string that should be added into the
7373 history entry. LINE is the line we're about to add; it helps
7374 make some more intelligent decisions in certain cases. */
7375 char *
7376 history_delimiting_chars (line)
7377 const char *line;
7378 {
7379 static int last_was_heredoc = 0; /* was the last entry the start of a here document? */
7380 register int i;
7381
7382 if ((parser_state & PST_HEREDOC) == 0)
7383 last_was_heredoc = 0;
7384
7385 if (dstack.delimiter_depth != 0)
7386 return ("\n");
7387
7388 /* We look for current_command_line_count == 2 because we are looking to
7389 add the first line of the body of the here document (the second line
7390 of the command). We also keep LAST_WAS_HEREDOC as a private sentinel
7391 variable to note when we think we added the first line of a here doc
7392 (the one with a "<<" somewhere in it) */
7393 if (parser_state & PST_HEREDOC)
7394 {
7395 if (last_was_heredoc)
7396 {
7397 last_was_heredoc = 0;
7398 return "\n";
7399 }
7400 return (current_command_line_count == 2 ? "\n" : "");
7401 }
7402
7403 if (parser_state & PST_COMPASSIGN)
7404 return (" ");
7405
7406 /* First, handle some special cases. */
7407 /*(*/
7408 /* If we just read `()', assume it's a function definition, and don't
7409 add a semicolon. If the token before the `)' was not `(', and we're
7410 not in the midst of parsing a case statement, assume it's a
7411 parenthesized command and add the semicolon. */
7412 /*)(*/
7413 if (token_before_that == ')')
7414 {
7415 if (two_tokens_ago == '(') /*)*/ /* function def */
7416 return " ";
7417 /* This does not work for subshells inside case statement
7418 command lists. It's a suboptimal solution. */
7419 else if (parser_state & PST_CASESTMT) /* case statement pattern */
7420 return " ";
7421 else
7422 return "; "; /* (...) subshell */
7423 }
7424 else if (token_before_that == WORD && two_tokens_ago == FUNCTION)
7425 return " "; /* function def using `function name' without `()' */
7426
7427 /* If we're not in a here document, but we think we're about to parse one,
7428 and we would otherwise return a `;', return a newline to delimit the
7429 line with the here-doc delimiter */
7430 else if ((parser_state & PST_HEREDOC) == 0 && current_command_line_count > 1 && last_read_token == '\n' && strstr (line, "<<"))
7431 {
7432 last_was_heredoc = 1;
7433 return "\n";
7434 }
7435
7436 else if (token_before_that == WORD && two_tokens_ago == FOR)
7437 {
7438 /* Tricky. `for i\nin ...' should not have a semicolon, but
7439 `for i\ndo ...' should. We do what we can. */
7440 for (i = shell_input_line_index; whitespace (shell_input_line[i]); i++)
7441 ;
7442 if (shell_input_line[i] && shell_input_line[i] == 'i' && shell_input_line[i+1] == 'n')
7443 return " ";
7444 return ";";
7445 }
7446 else if (two_tokens_ago == CASE && token_before_that == WORD && (parser_state & PST_CASESTMT))
7447 return " ";
7448
7449 for (i = 0; no_semi_successors[i]; i++)
7450 {
7451 if (token_before_that == no_semi_successors[i])
7452 return (" ");
7453 }
7454
7455 return ("; ");
7456 }
7457 #endif /* HISTORY */
7458
7459 /* Issue a prompt, or prepare to issue a prompt when the next character
7460 is read. */
7461 static void
7462 prompt_again ()
7463 {
7464 char *temp_prompt;
7465
7466 if (interactive == 0 || expanding_alias ()) /* XXX */
7467 return;
7468
7469 ps1_prompt = get_string_value ("PS1");
7470 ps2_prompt = get_string_value ("PS2");
7471
7472 if (!prompt_string_pointer)
7473 prompt_string_pointer = &ps1_prompt;
7474
7475 temp_prompt = *prompt_string_pointer
7476 ? decode_prompt_string (*prompt_string_pointer)
7477 : (char *)NULL;
7478
7479 if (temp_prompt == 0)
7480 {
7481 temp_prompt = (char *)xmalloc (1);
7482 temp_prompt[0] = '\0';
7483 }
7484
7485 current_prompt_string = *prompt_string_pointer;
7486 prompt_string_pointer = &ps2_prompt;
7487
7488 #if defined (READLINE)
7489 if (!no_line_editing)
7490 {
7491 FREE (current_readline_prompt);
7492 current_readline_prompt = temp_prompt;
7493 }
7494 else
7495 #endif /* READLINE */
7496 {
7497 FREE (current_decoded_prompt);
7498 current_decoded_prompt = temp_prompt;
7499 }
7500 }
7501
7502 int
7503 get_current_prompt_level ()
7504 {
7505 return ((current_prompt_string && current_prompt_string == ps2_prompt) ? 2 : 1);
7506 }
7507
7508 void
7509 set_current_prompt_level (x)
7510 int x;
7511 {
7512 prompt_string_pointer = (x == 2) ? &ps2_prompt : &ps1_prompt;
7513 current_prompt_string = *prompt_string_pointer;
7514 }
7515
7516 static void
7517 print_prompt ()
7518 {
7519 fprintf (stderr, "%s", current_decoded_prompt);
7520 fflush (stderr);
7521 }
7522
7523 /* Return a string which will be printed as a prompt. The string
7524 may contain special characters which are decoded as follows:
7525
7526 \a bell (ascii 07)
7527 \d the date in Day Mon Date format
7528 \e escape (ascii 033)
7529 \h the hostname up to the first `.'
7530 \H the hostname
7531 \j the number of active jobs
7532 \l the basename of the shell's tty device name
7533 \n CRLF
7534 \r CR
7535 \s the name of the shell
7536 \t the time in 24-hour hh:mm:ss format
7537 \T the time in 12-hour hh:mm:ss format
7538 \@ the time in 12-hour hh:mm am/pm format
7539 \A the time in 24-hour hh:mm format
7540 \D{fmt} the result of passing FMT to strftime(3)
7541 \u your username
7542 \v the version of bash (e.g., 2.00)
7543 \V the release of bash, version + patchlevel (e.g., 2.00.0)
7544 \w the current working directory
7545 \W the last element of $PWD
7546 \! the history number of this command
7547 \# the command number of this command
7548 \$ a $ or a # if you are root
7549 \nnn character code nnn in octal
7550 \\ a backslash
7551 \[ begin a sequence of non-printing chars
7552 \] end a sequence of non-printing chars
7553 */
7554 #define PROMPT_GROWTH 48
7555 char *
7556 decode_prompt_string (string)
7557 char *string;
7558 {
7559 WORD_LIST *list;
7560 char *result, *t;
7561 struct dstack save_dstack;
7562 int last_exit_value, last_comsub_pid;
7563 #if defined (PROMPT_STRING_DECODE)
7564 int result_size, result_index;
7565 int c, n, i;
7566 char *temp, octal_string[4];
7567 struct tm *tm;
7568 time_t the_time;
7569 char timebuf[128];
7570 char *timefmt;
7571
7572 result = (char *)xmalloc (result_size = PROMPT_GROWTH);
7573 result[result_index = 0] = 0;
7574 temp = (char *)NULL;
7575
7576 while (c = *string++)
7577 {
7578 if (posixly_correct && c == '!')
7579 {
7580 if (*string == '!')
7581 {
7582 temp = savestring ("!");
7583 goto add_string;
7584 }
7585 else
7586 {
7587 #if !defined (HISTORY)
7588 temp = savestring ("1");
7589 #else /* HISTORY */
7590 temp = itos (history_number ());
7591 #endif /* HISTORY */
7592 string--; /* add_string increments string again. */
7593 goto add_string;
7594 }
7595 }
7596 if (c == '\\')
7597 {
7598 c = *string;
7599
7600 switch (c)
7601 {
7602 case '0':
7603 case '1':
7604 case '2':
7605 case '3':
7606 case '4':
7607 case '5':
7608 case '6':
7609 case '7':
7610 strncpy (octal_string, string, 3);
7611 octal_string[3] = '\0';
7612
7613 n = read_octal (octal_string);
7614 temp = (char *)xmalloc (3);
7615
7616 if (n == CTLESC || n == CTLNUL)
7617 {
7618 temp[0] = CTLESC;
7619 temp[1] = n;
7620 temp[2] = '\0';
7621 }
7622 else if (n == -1)
7623 {
7624 temp[0] = '\\';
7625 temp[1] = '\0';
7626 }
7627 else
7628 {
7629 temp[0] = n;
7630 temp[1] = '\0';
7631 }
7632
7633 for (c = 0; n != -1 && c < 3 && ISOCTAL (*string); c++)
7634 string++;
7635
7636 c = 0; /* tested at add_string: */
7637 goto add_string;
7638
7639 case 'd':
7640 case 't':
7641 case 'T':
7642 case '@':
7643 case 'A':
7644 /* Make the current time/date into a string. */
7645 (void) time (&the_time);
7646 #if defined (HAVE_TZSET)
7647 sv_tz ("TZ"); /* XXX -- just make sure */
7648 #endif
7649 tm = localtime (&the_time);
7650
7651 if (c == 'd')
7652 n = strftime (timebuf, sizeof (timebuf), "%a %b %d", tm);
7653 else if (c == 't')
7654 n = strftime (timebuf, sizeof (timebuf), "%H:%M:%S", tm);
7655 else if (c == 'T')
7656 n = strftime (timebuf, sizeof (timebuf), "%I:%M:%S", tm);
7657 else if (c == '@')
7658 n = strftime (timebuf, sizeof (timebuf), "%I:%M %p", tm);
7659 else if (c == 'A')
7660 n = strftime (timebuf, sizeof (timebuf), "%H:%M", tm);
7661
7662 if (n == 0)
7663 timebuf[0] = '\0';
7664 else
7665 timebuf[sizeof(timebuf) - 1] = '\0';
7666
7667 temp = savestring (timebuf);
7668 goto add_string;
7669
7670 case 'D': /* strftime format */
7671 if (string[1] != '{') /* } */
7672 goto not_escape;
7673
7674 (void) time (&the_time);
7675 tm = localtime (&the_time);
7676 string += 2; /* skip { */
7677 timefmt = xmalloc (strlen (string) + 3);
7678 for (t = timefmt; *string && *string != '}'; )
7679 *t++ = *string++;
7680 *t = '\0';
7681 c = *string; /* tested at add_string */
7682 if (timefmt[0] == '\0')
7683 {
7684 timefmt[0] = '%';
7685 timefmt[1] = 'X'; /* locale-specific current time */
7686 timefmt[2] = '\0';
7687 }
7688 n = strftime (timebuf, sizeof (timebuf), timefmt, tm);
7689 free (timefmt);
7690
7691 if (n == 0)
7692 timebuf[0] = '\0';
7693 else
7694 timebuf[sizeof(timebuf) - 1] = '\0';
7695
7696 if (promptvars || posixly_correct)
7697 /* Make sure that expand_prompt_string is called with a
7698 second argument of Q_DOUBLE_QUOTES if we use this
7699 function here. */
7700 temp = sh_backslash_quote_for_double_quotes (timebuf);
7701 else
7702 temp = savestring (timebuf);
7703 goto add_string;
7704
7705 case 'n':
7706 temp = (char *)xmalloc (3);
7707 temp[0] = no_line_editing ? '\n' : '\r';
7708 temp[1] = no_line_editing ? '\0' : '\n';
7709 temp[2] = '\0';
7710 goto add_string;
7711
7712 case 's':
7713 temp = base_pathname (shell_name);
7714 temp = savestring (temp);
7715 goto add_string;
7716
7717 case 'v':
7718 case 'V':
7719 temp = (char *)xmalloc (16);
7720 if (c == 'v')
7721 strcpy (temp, dist_version);
7722 else
7723 sprintf (temp, "%s.%d", dist_version, patch_level);
7724 goto add_string;
7725
7726 case 'w':
7727 case 'W':
7728 {
7729 /* Use the value of PWD because it is much more efficient. */
7730 char t_string[PATH_MAX];
7731 int tlen;
7732
7733 temp = get_string_value ("PWD");
7734
7735 if (temp == 0)
7736 {
7737 if (getcwd (t_string, sizeof(t_string)) == 0)
7738 {
7739 t_string[0] = '.';
7740 tlen = 1;
7741 }
7742 else
7743 tlen = strlen (t_string);
7744 }
7745 else
7746 {
7747 tlen = sizeof (t_string) - 1;
7748 strncpy (t_string, temp, tlen);
7749 }
7750 t_string[tlen] = '\0';
7751
7752 #if defined (MACOSX)
7753 /* Convert from "fs" format to "input" format */
7754 temp = fnx_fromfs (t_string, strlen (t_string));
7755 if (temp != t_string)
7756 strcpy (t_string, temp);
7757 #endif
7758
7759 #define ROOT_PATH(x) ((x)[0] == '/' && (x)[1] == 0)
7760 #define DOUBLE_SLASH_ROOT(x) ((x)[0] == '/' && (x)[1] == '/' && (x)[2] == 0)
7761 /* Abbreviate \W as ~ if $PWD == $HOME */
7762 if (c == 'W' && (((t = get_string_value ("HOME")) == 0) || STREQ (t, t_string) == 0))
7763 {
7764 if (ROOT_PATH (t_string) == 0 && DOUBLE_SLASH_ROOT (t_string) == 0)
7765 {
7766 t = strrchr (t_string, '/');
7767 if (t)
7768 memmove (t_string, t + 1, strlen (t)); /* strlen(t) to copy NULL */
7769 }
7770 }
7771 #undef ROOT_PATH
7772 #undef DOUBLE_SLASH_ROOT
7773 else
7774 {
7775 /* polite_directory_format is guaranteed to return a string
7776 no longer than PATH_MAX - 1 characters. */
7777 temp = polite_directory_format (t_string);
7778 if (temp != t_string)
7779 strcpy (t_string, temp);
7780 }
7781
7782 temp = trim_pathname (t_string, PATH_MAX - 1);
7783 /* If we're going to be expanding the prompt string later,
7784 quote the directory name. */
7785 if (promptvars || posixly_correct)
7786 /* Make sure that expand_prompt_string is called with a
7787 second argument of Q_DOUBLE_QUOTES if we use this
7788 function here. */
7789 temp = sh_backslash_quote_for_double_quotes (t_string);
7790 else
7791 temp = savestring (t_string);
7792
7793 goto add_string;
7794 }
7795
7796 case 'u':
7797 if (current_user.user_name == 0)
7798 get_current_user_info ();
7799 temp = savestring (current_user.user_name);
7800 goto add_string;
7801
7802 case 'h':
7803 case 'H':
7804 temp = savestring (current_host_name);
7805 if (c == 'h' && (t = (char *)strchr (temp, '.')))
7806 *t = '\0';
7807 goto add_string;
7808
7809 case '#':
7810 temp = itos (current_command_number);
7811 goto add_string;
7812
7813 case '!':
7814 #if !defined (HISTORY)
7815 temp = savestring ("1");
7816 #else /* HISTORY */
7817 temp = itos (history_number ());
7818 #endif /* HISTORY */
7819 goto add_string;
7820
7821 case '$':
7822 t = temp = (char *)xmalloc (3);
7823 if ((promptvars || posixly_correct) && (current_user.euid != 0))
7824 *t++ = '\\';
7825 *t++ = current_user.euid == 0 ? '#' : '$';
7826 *t = '\0';
7827 goto add_string;
7828
7829 case 'j':
7830 temp = itos (count_all_jobs ());
7831 goto add_string;
7832
7833 case 'l':
7834 #if defined (HAVE_TTYNAME)
7835 temp = (char *)ttyname (fileno (stdin));
7836 t = temp ? base_pathname (temp) : "tty";
7837 temp = savestring (t);
7838 #else
7839 temp = savestring ("tty");
7840 #endif /* !HAVE_TTYNAME */
7841 goto add_string;
7842
7843 #if defined (READLINE)
7844 case '[':
7845 case ']':
7846 if (no_line_editing)
7847 {
7848 string++;
7849 break;
7850 }
7851 temp = (char *)xmalloc (3);
7852 n = (c == '[') ? RL_PROMPT_START_IGNORE : RL_PROMPT_END_IGNORE;
7853 i = 0;
7854 if (n == CTLESC || n == CTLNUL)
7855 temp[i++] = CTLESC;
7856 temp[i++] = n;
7857 temp[i] = '\0';
7858 goto add_string;
7859 #endif /* READLINE */
7860
7861 case '\\':
7862 case 'a':
7863 case 'e':
7864 case 'r':
7865 temp = (char *)xmalloc (2);
7866 if (c == 'a')
7867 temp[0] = '\07';
7868 else if (c == 'e')
7869 temp[0] = '\033';
7870 else if (c == 'r')
7871 temp[0] = '\r';
7872 else /* (c == '\\') */
7873 temp[0] = c;
7874 temp[1] = '\0';
7875 goto add_string;
7876
7877 default:
7878 not_escape:
7879 temp = (char *)xmalloc (3);
7880 temp[0] = '\\';
7881 temp[1] = c;
7882 temp[2] = '\0';
7883
7884 add_string:
7885 if (c)
7886 string++;
7887 result =
7888 sub_append_string (temp, result, &result_index, &result_size);
7889 temp = (char *)NULL; /* Freed in sub_append_string (). */
7890 result[result_index] = '\0';
7891 break;
7892 }
7893 }
7894 else
7895 {
7896 RESIZE_MALLOCED_BUFFER (result, result_index, 3, result_size, PROMPT_GROWTH);
7897 result[result_index++] = c;
7898 result[result_index] = '\0';
7899 }
7900 }
7901 #else /* !PROMPT_STRING_DECODE */
7902 result = savestring (string);
7903 #endif /* !PROMPT_STRING_DECODE */
7904
7905 /* Save the delimiter stack and point `dstack' to temp space so any
7906 command substitutions in the prompt string won't result in screwing
7907 up the parser's quoting state. */
7908 save_dstack = dstack;
7909 dstack = temp_dstack;
7910 dstack.delimiter_depth = 0;
7911
7912 /* Perform variable and parameter expansion and command substitution on
7913 the prompt string. */
7914 if (promptvars || posixly_correct)
7915 {
7916 last_exit_value = last_command_exit_value;
7917 last_comsub_pid = last_command_subst_pid;
7918 list = expand_prompt_string (result, Q_DOUBLE_QUOTES, 0);
7919 free (result);
7920 result = string_list (list);
7921 dispose_words (list);
7922 last_command_exit_value = last_exit_value;
7923 last_command_subst_pid = last_comsub_pid;
7924 }
7925 else
7926 {
7927 t = dequote_string (result);
7928 free (result);
7929 result = t;
7930 }
7931
7932 dstack = save_dstack;
7933
7934 return (result);
7935 }
7936
7937 /************************************************
7938 * *
7939 * ERROR HANDLING *
7940 * *
7941 ************************************************/
7942
7943 /* Report a syntax error, and restart the parser. Call here for fatal
7944 errors. */
7945 int
7946 yyerror (msg)
7947 const char *msg;
7948 {
7949 report_syntax_error ((char *)NULL);
7950 reset_parser ();
7951 return (0);
7952 }
7953
7954 static char *
7955 error_token_from_token (tok)
7956 int tok;
7957 {
7958 char *t;
7959
7960 if (t = find_token_in_alist (tok, word_token_alist, 0))
7961 return t;
7962
7963 if (t = find_token_in_alist (tok, other_token_alist, 0))
7964 return t;
7965
7966 t = (char *)NULL;
7967 /* This stuff is dicy and needs closer inspection */
7968 switch (current_token)
7969 {
7970 case WORD:
7971 case ASSIGNMENT_WORD:
7972 if (yylval.word)
7973 t = savestring (yylval.word->word);
7974 break;
7975 case NUMBER:
7976 t = itos (yylval.number);
7977 break;
7978 case ARITH_CMD:
7979 if (yylval.word_list)
7980 t = string_list (yylval.word_list);
7981 break;
7982 case ARITH_FOR_EXPRS:
7983 if (yylval.word_list)
7984 t = string_list_internal (yylval.word_list, " ; ");
7985 break;
7986 case COND_CMD:
7987 t = (char *)NULL; /* punt */
7988 break;
7989 }
7990
7991 return t;
7992 }
7993
7994 static char *
7995 error_token_from_text ()
7996 {
7997 char *msg, *t;
7998 int token_end, i;
7999
8000 t = shell_input_line;
8001 i = shell_input_line_index;
8002 token_end = 0;
8003 msg = (char *)NULL;
8004
8005 if (i && t[i] == '\0')
8006 i--;
8007
8008 while (i && (whitespace (t[i]) || t[i] == '\n'))
8009 i--;
8010
8011 if (i)
8012 token_end = i + 1;
8013
8014 while (i && (member (t[i], " \n\t;|&") == 0))
8015 i--;
8016
8017 while (i != token_end && (whitespace (t[i]) || t[i] == '\n'))
8018 i++;
8019
8020 /* Return our idea of the offending token. */
8021 if (token_end || (i == 0 && token_end == 0))
8022 {
8023 if (token_end)
8024 msg = substring (t, i, token_end);
8025 else /* one-character token */
8026 {
8027 msg = (char *)xmalloc (2);
8028 msg[0] = t[i];
8029 msg[1] = '\0';
8030 }
8031 }
8032
8033 return (msg);
8034 }
8035
8036 static void
8037 print_offending_line ()
8038 {
8039 char *msg;
8040 int token_end;
8041
8042 msg = savestring (shell_input_line);
8043 token_end = strlen (msg);
8044 while (token_end && msg[token_end - 1] == '\n')
8045 msg[--token_end] = '\0';
8046
8047 parser_error (line_number, "`%s'", msg);
8048 free (msg);
8049 }
8050
8051 /* Report a syntax error with line numbers, etc.
8052 Call here for recoverable errors. If you have a message to print,
8053 then place it in MESSAGE, otherwise pass NULL and this will figure
8054 out an appropriate message for you. */
8055 static void
8056 report_syntax_error (message)
8057 char *message;
8058 {
8059 char *msg, *p;
8060
8061 if (message)
8062 {
8063 parser_error (line_number, "%s", message);
8064 if (interactive && EOF_Reached)
8065 EOF_Reached = 0;
8066 last_command_exit_value = parse_and_execute_level ? EX_BADSYNTAX : EX_BADUSAGE;
8067 return;
8068 }
8069
8070 /* If the line of input we're reading is not null, try to find the
8071 objectionable token. First, try to figure out what token the
8072 parser's complaining about by looking at current_token. */
8073 if (current_token != 0 && EOF_Reached == 0 && (msg = error_token_from_token (current_token)))
8074 {
8075 if (ansic_shouldquote (msg))
8076 {
8077 p = ansic_quote (msg, 0, NULL);
8078 free (msg);
8079 msg = p;
8080 }
8081 parser_error (line_number, _("syntax error near unexpected token `%s'"), msg);
8082 free (msg);
8083
8084 if (interactive == 0)
8085 print_offending_line ();
8086
8087 last_command_exit_value = parse_and_execute_level ? EX_BADSYNTAX : EX_BADUSAGE;
8088 return;
8089 }
8090
8091 /* If looking at the current token doesn't prove fruitful, try to find the
8092 offending token by analyzing the text of the input line near the current
8093 input line index and report what we find. */
8094 if (shell_input_line && *shell_input_line)
8095 {
8096 msg = error_token_from_text ();
8097 if (msg)
8098 {
8099 parser_error (line_number, _("syntax error near `%s'"), msg);
8100 free (msg);
8101 }
8102
8103 /* If not interactive, print the line containing the error. */
8104 if (interactive == 0)
8105 print_offending_line ();
8106 }
8107 else
8108 {
8109 msg = EOF_Reached ? _("syntax error: unexpected end of file") : _("syntax error");
8110 parser_error (line_number, "%s", msg);
8111 /* When the shell is interactive, this file uses EOF_Reached
8112 only for error reporting. Other mechanisms are used to
8113 decide whether or not to exit. */
8114 if (interactive && EOF_Reached)
8115 EOF_Reached = 0;
8116 }
8117
8118 last_command_exit_value = parse_and_execute_level ? EX_BADSYNTAX : EX_BADUSAGE;
8119 }
8120
8121 /* ??? Needed function. ??? We have to be able to discard the constructs
8122 created during parsing. In the case of error, we want to return
8123 allocated objects to the memory pool. In the case of no error, we want
8124 to throw away the information about where the allocated objects live.
8125 (dispose_command () will actually free the command.) */
8126 static void
8127 discard_parser_constructs (error_p)
8128 int error_p;
8129 {
8130 }
8131
8132 /************************************************
8133 * *
8134 * EOF HANDLING *
8135 * *
8136 ************************************************/
8137
8138 /* Do that silly `type "bye" to exit' stuff. You know, "ignoreeof". */
8139
8140 /* A flag denoting whether or not ignoreeof is set. */
8141 int ignoreeof = 0;
8142
8143 /* The number of times that we have encountered an EOF character without
8144 another character intervening. When this gets above the limit, the
8145 shell terminates. */
8146 int eof_encountered = 0;
8147
8148 /* The limit for eof_encountered. */
8149 int eof_encountered_limit = 10;
8150
8151 /* If we have EOF as the only input unit, this user wants to leave
8152 the shell. If the shell is not interactive, then just leave.
8153 Otherwise, if ignoreeof is set, and we haven't done this the
8154 required number of times in a row, print a message. */
8155 static void
8156 handle_eof_input_unit ()
8157 {
8158 if (interactive)
8159 {
8160 /* shell.c may use this to decide whether or not to write out the
8161 history, among other things. We use it only for error reporting
8162 in this file. */
8163 if (EOF_Reached)
8164 EOF_Reached = 0;
8165
8166 /* If the user wants to "ignore" eof, then let her do so, kind of. */
8167 if (ignoreeof)
8168 {
8169 if (eof_encountered < eof_encountered_limit)
8170 {
8171 fprintf (stderr, _("Use \"%s\" to leave the shell.\n"),
8172 login_shell ? "logout" : "exit");
8173 eof_encountered++;
8174 /* Reset the parsing state. */
8175 last_read_token = current_token = '\n';
8176 /* Reset the prompt string to be $PS1. */
8177 prompt_string_pointer = (char **)NULL;
8178 prompt_again ();
8179 return;
8180 }
8181 }
8182
8183 /* In this case EOF should exit the shell. Do it now. */
8184 reset_parser ();
8185 exit_builtin ((WORD_LIST *)NULL);
8186 }
8187 else
8188 {
8189 /* We don't write history files, etc., for non-interactive shells. */
8190 EOF_Reached = 1;
8191 }
8192 }
8193
8194 /************************************************
8195 * *
8196 * STRING PARSING FUNCTIONS *
8197 * *
8198 ************************************************/
8199
8200 /* It's very important that these two functions treat the characters
8201 between ( and ) identically. */
8202
8203 static WORD_LIST parse_string_error;
8204
8205 /* Take a string and run it through the shell parser, returning the
8206 resultant word list. Used by compound array assignment. */
8207 WORD_LIST *
8208 parse_string_to_word_list (s, flags, whom)
8209 char *s;
8210 int flags;
8211 const char *whom;
8212 {
8213 WORD_LIST *wl;
8214 int tok, orig_current_token, orig_line_number, orig_input_terminator;
8215 int orig_line_count;
8216 int old_echo_input, old_expand_aliases;
8217 #if defined (HISTORY)
8218 int old_remember_on_history, old_history_expansion_inhibited;
8219 #endif
8220
8221 #if defined (HISTORY)
8222 old_remember_on_history = remember_on_history;
8223 # if defined (BANG_HISTORY)
8224 old_history_expansion_inhibited = history_expansion_inhibited;
8225 # endif
8226 bash_history_disable ();
8227 #endif
8228
8229 orig_line_number = line_number;
8230 orig_line_count = current_command_line_count;
8231 orig_input_terminator = shell_input_line_terminator;
8232 old_echo_input = echo_input_at_read;
8233 old_expand_aliases = expand_aliases;
8234
8235 push_stream (1);
8236 last_read_token = WORD; /* WORD to allow reserved words here */
8237 current_command_line_count = 0;
8238 echo_input_at_read = expand_aliases = 0;
8239
8240 with_input_from_string (s, whom);
8241 wl = (WORD_LIST *)NULL;
8242
8243 if (flags & 1)
8244 parser_state |= PST_COMPASSIGN|PST_REPARSE;
8245
8246 while ((tok = read_token (READ)) != yacc_EOF)
8247 {
8248 if (tok == '\n' && *bash_input.location.string == '\0')
8249 break;
8250 if (tok == '\n') /* Allow newlines in compound assignments */
8251 continue;
8252 if (tok != WORD && tok != ASSIGNMENT_WORD)
8253 {
8254 line_number = orig_line_number + line_number - 1;
8255 orig_current_token = current_token;
8256 current_token = tok;
8257 yyerror (NULL); /* does the right thing */
8258 current_token = orig_current_token;
8259 if (wl)
8260 dispose_words (wl);
8261 wl = &parse_string_error;
8262 break;
8263 }
8264 wl = make_word_list (yylval.word, wl);
8265 }
8266
8267 last_read_token = '\n';
8268 pop_stream ();
8269
8270 #if defined (HISTORY)
8271 remember_on_history = old_remember_on_history;
8272 # if defined (BANG_HISTORY)
8273 history_expansion_inhibited = old_history_expansion_inhibited;
8274 # endif /* BANG_HISTORY */
8275 #endif /* HISTORY */
8276
8277 echo_input_at_read = old_echo_input;
8278 expand_aliases = old_expand_aliases;
8279
8280 current_command_line_count = orig_line_count;
8281 shell_input_line_terminator = orig_input_terminator;
8282
8283 if (flags & 1)
8284 parser_state &= ~(PST_COMPASSIGN|PST_REPARSE);
8285
8286 if (wl == &parse_string_error)
8287 {
8288 last_command_exit_value = EXECUTION_FAILURE;
8289 if (interactive_shell == 0 && posixly_correct)
8290 jump_to_top_level (FORCE_EOF);
8291 else
8292 jump_to_top_level (DISCARD);
8293 }
8294
8295 return (REVERSE_LIST (wl, WORD_LIST *));
8296 }
8297
8298 static char *
8299 parse_compound_assignment (retlenp)
8300 int *retlenp;
8301 {
8302 WORD_LIST *wl, *rl;
8303 int tok, orig_line_number, orig_token_size, orig_last_token, assignok;
8304 char *saved_token, *ret;
8305
8306 saved_token = token;
8307 orig_token_size = token_buffer_size;
8308 orig_line_number = line_number;
8309 orig_last_token = last_read_token;
8310
8311 last_read_token = WORD; /* WORD to allow reserved words here */
8312
8313 token = (char *)NULL;
8314 token_buffer_size = 0;
8315
8316 assignok = parser_state&PST_ASSIGNOK; /* XXX */
8317
8318 wl = (WORD_LIST *)NULL; /* ( */
8319 parser_state |= PST_COMPASSIGN;
8320
8321 while ((tok = read_token (READ)) != ')')
8322 {
8323 if (tok == '\n') /* Allow newlines in compound assignments */
8324 {
8325 if (SHOULD_PROMPT ())
8326 prompt_again ();
8327 continue;
8328 }
8329 if (tok != WORD && tok != ASSIGNMENT_WORD)
8330 {
8331 current_token = tok; /* for error reporting */
8332 if (tok == yacc_EOF) /* ( */
8333 parser_error (orig_line_number, _("unexpected EOF while looking for matching `)'"));
8334 else
8335 yyerror(NULL); /* does the right thing */
8336 if (wl)
8337 dispose_words (wl);
8338 wl = &parse_string_error;
8339 break;
8340 }
8341 wl = make_word_list (yylval.word, wl);
8342 }
8343
8344 FREE (token);
8345 token = saved_token;
8346 token_buffer_size = orig_token_size;
8347
8348 parser_state &= ~PST_COMPASSIGN;
8349
8350 if (wl == &parse_string_error)
8351 {
8352 last_command_exit_value = EXECUTION_FAILURE;
8353 last_read_token = '\n'; /* XXX */
8354 if (interactive_shell == 0 && posixly_correct)
8355 jump_to_top_level (FORCE_EOF);
8356 else
8357 jump_to_top_level (DISCARD);
8358 }
8359
8360 last_read_token = orig_last_token; /* XXX - was WORD? */
8361
8362 if (wl)
8363 {
8364 rl = REVERSE_LIST (wl, WORD_LIST *);
8365 ret = string_list (rl);
8366 dispose_words (rl);
8367 }
8368 else
8369 ret = (char *)NULL;
8370
8371 if (retlenp)
8372 *retlenp = (ret && *ret) ? strlen (ret) : 0;
8373
8374 if (assignok)
8375 parser_state |= PST_ASSIGNOK;
8376
8377 return ret;
8378 }
8379
8380 /************************************************
8381 * *
8382 * SAVING AND RESTORING PARTIAL PARSE STATE *
8383 * *
8384 ************************************************/
8385
8386 sh_parser_state_t *
8387 save_parser_state (ps)
8388 sh_parser_state_t *ps;
8389 {
8390 if (ps == 0)
8391 ps = (sh_parser_state_t *)xmalloc (sizeof (sh_parser_state_t));
8392 if (ps == 0)
8393 return ((sh_parser_state_t *)NULL);
8394
8395 ps->parser_state = parser_state;
8396 ps->token_state = save_token_state ();
8397
8398 ps->input_line_terminator = shell_input_line_terminator;
8399 ps->eof_encountered = eof_encountered;
8400
8401 ps->prompt_string_pointer = prompt_string_pointer;
8402
8403 ps->current_command_line_count = current_command_line_count;
8404
8405 #if defined (HISTORY)
8406 ps->remember_on_history = remember_on_history;
8407 # if defined (BANG_HISTORY)
8408 ps->history_expansion_inhibited = history_expansion_inhibited;
8409 # endif
8410 #endif
8411
8412 ps->last_command_exit_value = last_command_exit_value;
8413 #if defined (ARRAY_VARS)
8414 ps->pipestatus = save_pipestatus_array ();
8415 #endif
8416
8417 ps->last_shell_builtin = last_shell_builtin;
8418 ps->this_shell_builtin = this_shell_builtin;
8419
8420 ps->expand_aliases = expand_aliases;
8421 ps->echo_input_at_read = echo_input_at_read;
8422 ps->need_here_doc = need_here_doc;
8423
8424 ps->token = token;
8425 ps->token_buffer_size = token_buffer_size;
8426 /* Force reallocation on next call to read_token_word */
8427 token = 0;
8428 token_buffer_size = 0;
8429
8430 return (ps);
8431 }
8432
8433 void
8434 restore_parser_state (ps)
8435 sh_parser_state_t *ps;
8436 {
8437 if (ps == 0)
8438 return;
8439
8440 parser_state = ps->parser_state;
8441 if (ps->token_state)
8442 {
8443 restore_token_state (ps->token_state);
8444 free (ps->token_state);
8445 }
8446
8447 shell_input_line_terminator = ps->input_line_terminator;
8448 eof_encountered = ps->eof_encountered;
8449
8450 prompt_string_pointer = ps->prompt_string_pointer;
8451
8452 current_command_line_count = ps->current_command_line_count;
8453
8454 #if defined (HISTORY)
8455 remember_on_history = ps->remember_on_history;
8456 # if defined (BANG_HISTORY)
8457 history_expansion_inhibited = ps->history_expansion_inhibited;
8458 # endif
8459 #endif
8460
8461 last_command_exit_value = ps->last_command_exit_value;
8462 #if defined (ARRAY_VARS)
8463 restore_pipestatus_array (ps->pipestatus);
8464 #endif
8465
8466 last_shell_builtin = ps->last_shell_builtin;
8467 this_shell_builtin = ps->this_shell_builtin;
8468
8469 expand_aliases = ps->expand_aliases;
8470 echo_input_at_read = ps->echo_input_at_read;
8471 need_here_doc = ps->need_here_doc;
8472
8473 FREE (token);
8474 token = ps->token;
8475 token_buffer_size = ps->token_buffer_size;
8476 }
8477
8478 sh_input_line_state_t *
8479 save_input_line_state (ls)
8480 sh_input_line_state_t *ls;
8481 {
8482 if (ls == 0)
8483 ls = (sh_input_line_state_t *)xmalloc (sizeof (sh_input_line_state_t));
8484 if (ls == 0)
8485 return ((sh_input_line_state_t *)NULL);
8486
8487 ls->input_line = shell_input_line;
8488 ls->input_line_size = shell_input_line_size;
8489 ls->input_line_len = shell_input_line_len;
8490 ls->input_line_index = shell_input_line_index;
8491
8492 /* force reallocation */
8493 shell_input_line = 0;
8494 shell_input_line_size = shell_input_line_len = shell_input_line_index = 0;
8495
8496 return ls;
8497 }
8498
8499 void
8500 restore_input_line_state (ls)
8501 sh_input_line_state_t *ls;
8502 {
8503 FREE (shell_input_line);
8504 shell_input_line = ls->input_line;
8505 shell_input_line_size = ls->input_line_size;
8506 shell_input_line_len = ls->input_line_len;
8507 shell_input_line_index = ls->input_line_index;
8508
8509 set_line_mbstate ();
8510 }
8511
8512 /************************************************
8513 * *
8514 * MULTIBYTE CHARACTER HANDLING *
8515 * *
8516 ************************************************/
8517
8518 #if defined (HANDLE_MULTIBYTE)
8519 static void
8520 set_line_mbstate ()
8521 {
8522 int c;
8523 size_t i, previ, len;
8524 mbstate_t mbs, prevs;
8525 size_t mbclen;
8526
8527 if (shell_input_line == NULL)
8528 return;
8529 len = strlen (shell_input_line); /* XXX - shell_input_line_len ? */
8530 FREE (shell_input_line_property);
8531 shell_input_line_property = (char *)xmalloc (len + 1);
8532
8533 memset (&prevs, '\0', sizeof (mbstate_t));
8534 for (i = previ = 0; i < len; i++)
8535 {
8536 mbs = prevs;
8537
8538 c = shell_input_line[i];
8539 if (c == EOF)
8540 {
8541 size_t j;
8542 for (j = i; j < len; j++)
8543 shell_input_line_property[j] = 1;
8544 break;
8545 }
8546
8547 mbclen = mbrlen (shell_input_line + previ, i - previ + 1, &mbs);
8548 if (mbclen == 1 || mbclen == (size_t)-1)
8549 {
8550 mbclen = 1;
8551 previ = i + 1;
8552 }
8553 else if (mbclen == (size_t)-2)
8554 mbclen = 0;
8555 else if (mbclen > 1)
8556 {
8557 mbclen = 0;
8558 previ = i + 1;
8559 prevs = mbs;
8560 }
8561 else
8562 {
8563 /* XXX - what to do if mbrlen returns 0? (null wide character) */
8564 size_t j;
8565 for (j = i; j < len; j++)
8566 shell_input_line_property[j] = 1;
8567 break;
8568 }
8569
8570 shell_input_line_property[i] = mbclen;
8571 }
8572 }
8573 #endif /* HANDLE_MULTIBYTE */
8574
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