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Bash-4.3 patch 28
[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/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/parse.y"
2584 {
2585 (yyval.redirect) = (yyvsp[(1) - (1)].redirect);
2586 }
2587 break;
2588
2589 case 56:
2590 #line 718 "/usr/src/local/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/parse.y"
2613 { (yyval.command) = clean_simple_command ((yyvsp[(1) - (1)].command)); }
2614 break;
2615
2616 case 60:
2617 #line 737 "/usr/src/local/chet/src/bash/bash-4.3.28/parse.y"
2618 { (yyval.command) = (yyvsp[(1) - (1)].command); }
2619 break;
2620
2621 case 61:
2622 #line 739 "/usr/src/local/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/parse.y"
2642 { (yyval.command) = (yyvsp[(1) - (1)].command); }
2643 break;
2644
2645 case 63:
2646 #line 757 "/usr/src/local/chet/src/bash/bash-4.3.28/parse.y"
2647 { (yyval.command) = (yyvsp[(1) - (1)].command); }
2648 break;
2649
2650 case 64:
2651 #line 761 "/usr/src/local/chet/src/bash/bash-4.3.28/parse.y"
2652 { (yyval.command) = (yyvsp[(1) - (1)].command); }
2653 break;
2654
2655 case 65:
2656 #line 763 "/usr/src/local/chet/src/bash/bash-4.3.28/parse.y"
2657 { (yyval.command) = (yyvsp[(1) - (1)].command); }
2658 break;
2659
2660 case 66:
2661 #line 765 "/usr/src/local/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/parse.y"
2672 { (yyval.command) = (yyvsp[(1) - (1)].command); }
2673 break;
2674
2675 case 69:
2676 #line 771 "/usr/src/local/chet/src/bash/bash-4.3.28/parse.y"
2677 { (yyval.command) = (yyvsp[(1) - (1)].command); }
2678 break;
2679
2680 case 70:
2681 #line 773 "/usr/src/local/chet/src/bash/bash-4.3.28/parse.y"
2682 { (yyval.command) = (yyvsp[(1) - (1)].command); }
2683 break;
2684
2685 case 71:
2686 #line 775 "/usr/src/local/chet/src/bash/bash-4.3.28/parse.y"
2687 { (yyval.command) = (yyvsp[(1) - (1)].command); }
2688 break;
2689
2690 case 72:
2691 #line 777 "/usr/src/local/chet/src/bash/bash-4.3.28/parse.y"
2692 { (yyval.command) = (yyvsp[(1) - (1)].command); }
2693 break;
2694
2695 case 73:
2696 #line 779 "/usr/src/local/chet/src/bash/bash-4.3.28/parse.y"
2697 { (yyval.command) = (yyvsp[(1) - (1)].command); }
2698 break;
2699
2700 case 74:
2701 #line 781 "/usr/src/local/chet/src/bash/bash-4.3.28/parse.y"
2702 { (yyval.command) = (yyvsp[(1) - (1)].command); }
2703 break;
2704
2705 case 75:
2706 #line 785 "/usr/src/local/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/parse.y"
2890 { (yyval.command) = (yyvsp[(1) - (1)].command); }
2891 break;
2892
2893 case 100:
2894 #line 910 "/usr/src/local/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/parse.y"
3014 { (yyval.command) = make_group_command ((yyvsp[(2) - (3)].command)); }
3015 break;
3016
3017 case 111:
3018 #line 1012 "/usr/src/local/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/parse.y"
3024 { (yyval.command) = (yyvsp[(2) - (3)].command); }
3025 break;
3026
3027 case 113:
3028 #line 1020 "/usr/src/local/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/parse.y"
3069 { (yyval.pattern) = (yyvsp[(1) - (2)].pattern); }
3070 break;
3071
3072 case 123:
3073 #line 1045 "/usr/src/local/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/parse.y"
3118 {
3119 (yyval.command) = (yyvsp[(2) - (2)].command);
3120 }
3121 break;
3122
3123 case 134:
3124 #line 1084 "/usr/src/local/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/parse.y"
3165 { (yyval.command) = (yyvsp[(1) - (1)].command); }
3166 break;
3167
3168 case 144:
3169 #line 1118 "/usr/src/local/chet/src/bash/bash-4.3.28/parse.y"
3170 { (yyval.number) = '\n'; }
3171 break;
3172
3173 case 145:
3174 #line 1120 "/usr/src/local/chet/src/bash/bash-4.3.28/parse.y"
3175 { (yyval.number) = ';'; }
3176 break;
3177
3178 case 146:
3179 #line 1122 "/usr/src/local/chet/src/bash/bash-4.3.28/parse.y"
3180 { (yyval.number) = yacc_EOF; }
3181 break;
3182
3183 case 149:
3184 #line 1136 "/usr/src/local/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/parse.y"
3261 { (yyval.command) = (yyvsp[(1) - (1)].command); }
3262 break;
3263
3264 case 157:
3265 #line 1198 "/usr/src/local/chet/src/bash/bash-4.3.28/parse.y"
3266 { (yyval.command) = (yyvsp[(1) - (1)].command); }
3267 break;
3268
3269 case 158:
3270 #line 1200 "/usr/src/local/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/parse.y"
3361 { (yyval.command) = (yyvsp[(1) - (1)].command); }
3362 break;
3363
3364 case 165:
3365 #line 1278 "/usr/src/local/chet/src/bash/bash-4.3.28/parse.y"
3366 { (yyval.number) = CMD_TIME_PIPELINE; }
3367 break;
3368
3369 case 166:
3370 #line 1280 "/usr/src/local/chet/src/bash/bash-4.3.28/parse.y"
3371 { (yyval.number) = CMD_TIME_PIPELINE|CMD_TIME_POSIX; }
3372 break;
3373
3374 case 167:
3375 #line 1282 "/usr/src/local/chet/src/bash/bash-4.3.28/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/chet/src/bash/bash-4.3.28/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 #ifdef INCLUDE_UNUSED
4854 /* Back the input pointer up by one, effectively `ungetting' a character. */
4855 static void
4856 shell_ungetchar ()
4857 {
4858 if (shell_input_line && shell_input_line_index)
4859 shell_input_line_index--;
4860 }
4861 #endif
4862
4863 /* Discard input until CHARACTER is seen, then push that character back
4864 onto the input stream. */
4865 static void
4866 discard_until (character)
4867 int character;
4868 {
4869 int c;
4870
4871 while ((c = shell_getc (0)) != EOF && c != character)
4872 ;
4873
4874 if (c != EOF)
4875 shell_ungetc (c);
4876 }
4877
4878 void
4879 execute_variable_command (command, vname)
4880 char *command, *vname;
4881 {
4882 char *last_lastarg;
4883 sh_parser_state_t ps;
4884
4885 save_parser_state (&ps);
4886 last_lastarg = get_string_value ("_");
4887 if (last_lastarg)
4888 last_lastarg = savestring (last_lastarg);
4889
4890 parse_and_execute (savestring (command), vname, SEVAL_NONINT|SEVAL_NOHIST);
4891
4892 restore_parser_state (&ps);
4893 bind_variable ("_", last_lastarg, 0);
4894 FREE (last_lastarg);
4895
4896 if (token_to_read == '\n') /* reset_parser was called */
4897 token_to_read = 0;
4898 }
4899
4900 /* Place to remember the token. We try to keep the buffer
4901 at a reasonable size, but it can grow. */
4902 static char *token = (char *)NULL;
4903
4904 /* Current size of the token buffer. */
4905 static int token_buffer_size;
4906
4907 /* Command to read_token () explaining what we want it to do. */
4908 #define READ 0
4909 #define RESET 1
4910 #define prompt_is_ps1 \
4911 (!prompt_string_pointer || prompt_string_pointer == &ps1_prompt)
4912
4913 /* Function for yyparse to call. yylex keeps track of
4914 the last two tokens read, and calls read_token. */
4915 static int
4916 yylex ()
4917 {
4918 if (interactive && (current_token == 0 || current_token == '\n'))
4919 {
4920 /* Before we print a prompt, we might have to check mailboxes.
4921 We do this only if it is time to do so. Notice that only here
4922 is the mail alarm reset; nothing takes place in check_mail ()
4923 except the checking of mail. Please don't change this. */
4924 if (prompt_is_ps1 && parse_and_execute_level == 0 && time_to_check_mail ())
4925 {
4926 check_mail ();
4927 reset_mail_timer ();
4928 }
4929
4930 /* Avoid printing a prompt if we're not going to read anything, e.g.
4931 after resetting the parser with read_token (RESET). */
4932 if (token_to_read == 0 && SHOULD_PROMPT ())
4933 prompt_again ();
4934 }
4935
4936 two_tokens_ago = token_before_that;
4937 token_before_that = last_read_token;
4938 last_read_token = current_token;
4939 current_token = read_token (READ);
4940
4941 if ((parser_state & PST_EOFTOKEN) && current_token == shell_eof_token)
4942 {
4943 current_token = yacc_EOF;
4944 if (bash_input.type == st_string)
4945 rewind_input_string ();
4946 }
4947 parser_state &= ~PST_EOFTOKEN;
4948
4949 return (current_token);
4950 }
4951
4952 /* When non-zero, we have read the required tokens
4953 which allow ESAC to be the next one read. */
4954 static int esacs_needed_count;
4955
4956 static void
4957 push_heredoc (r)
4958 REDIRECT *r;
4959 {
4960 if (need_here_doc >= HEREDOC_MAX)
4961 {
4962 last_command_exit_value = EX_BADUSAGE;
4963 need_here_doc = 0;
4964 report_syntax_error (_("maximum here-document count exceeded"));
4965 reset_parser ();
4966 exit_shell (last_command_exit_value);
4967 }
4968 redir_stack[need_here_doc++] = r;
4969 }
4970
4971 void
4972 gather_here_documents ()
4973 {
4974 int r;
4975
4976 r = 0;
4977 while (need_here_doc > 0)
4978 {
4979 parser_state |= PST_HEREDOC;
4980 make_here_document (redir_stack[r++], line_number);
4981 parser_state &= ~PST_HEREDOC;
4982 need_here_doc--;
4983 }
4984 }
4985
4986 /* When non-zero, an open-brace used to create a group is awaiting a close
4987 brace partner. */
4988 static int open_brace_count;
4989
4990 #define command_token_position(token) \
4991 (((token) == ASSIGNMENT_WORD) || (parser_state&PST_REDIRLIST) || \
4992 ((token) != SEMI_SEMI && (token) != SEMI_AND && (token) != SEMI_SEMI_AND && reserved_word_acceptable(token)))
4993
4994 #define assignment_acceptable(token) \
4995 (command_token_position(token) && ((parser_state & PST_CASEPAT) == 0))
4996
4997 /* Check to see if TOKEN is a reserved word and return the token
4998 value if it is. */
4999 #define CHECK_FOR_RESERVED_WORD(tok) \
5000 do { \
5001 if (!dollar_present && !quoted && \
5002 reserved_word_acceptable (last_read_token)) \
5003 { \
5004 int i; \
5005 for (i = 0; word_token_alist[i].word != (char *)NULL; i++) \
5006 if (STREQ (tok, word_token_alist[i].word)) \
5007 { \
5008 if ((parser_state & PST_CASEPAT) && (word_token_alist[i].token != ESAC)) \
5009 break; \
5010 if (word_token_alist[i].token == TIME && time_command_acceptable () == 0) \
5011 break; \
5012 if (word_token_alist[i].token == ESAC) \
5013 parser_state &= ~(PST_CASEPAT|PST_CASESTMT); \
5014 else if (word_token_alist[i].token == CASE) \
5015 parser_state |= PST_CASESTMT; \
5016 else if (word_token_alist[i].token == COND_END) \
5017 parser_state &= ~(PST_CONDCMD|PST_CONDEXPR); \
5018 else if (word_token_alist[i].token == COND_START) \
5019 parser_state |= PST_CONDCMD; \
5020 else if (word_token_alist[i].token == '{') \
5021 open_brace_count++; \
5022 else if (word_token_alist[i].token == '}' && open_brace_count) \
5023 open_brace_count--; \
5024 return (word_token_alist[i].token); \
5025 } \
5026 } \
5027 } while (0)
5028
5029 #if defined (ALIAS)
5030
5031 /* OK, we have a token. Let's try to alias expand it, if (and only if)
5032 it's eligible.
5033
5034 It is eligible for expansion if EXPAND_ALIASES is set, and
5035 the token is unquoted and the last token read was a command
5036 separator (or expand_next_token is set), and we are currently
5037 processing an alias (pushed_string_list is non-empty) and this
5038 token is not the same as the current or any previously
5039 processed alias.
5040
5041 Special cases that disqualify:
5042 In a pattern list in a case statement (parser_state & PST_CASEPAT). */
5043
5044 static char *
5045 mk_alexpansion (s)
5046 char *s;
5047 {
5048 int l;
5049 char *r;
5050
5051 l = strlen (s);
5052 r = xmalloc (l + 2);
5053 strcpy (r, s);
5054 /* If the last character in the alias is a newline, don't add a trailing
5055 space to the expansion. Works with shell_getc above. */
5056 if (r[l - 1] != ' ' && r[l - 1] != '\n')
5057 r[l++] = ' ';
5058 r[l] = '\0';
5059 return r;
5060 }
5061
5062 static int
5063 alias_expand_token (tokstr)
5064 char *tokstr;
5065 {
5066 char *expanded;
5067 alias_t *ap;
5068
5069 if (((parser_state & PST_ALEXPNEXT) || command_token_position (last_read_token)) &&
5070 (parser_state & PST_CASEPAT) == 0)
5071 {
5072 ap = find_alias (tokstr);
5073
5074 /* Currently expanding this token. */
5075 if (ap && (ap->flags & AL_BEINGEXPANDED))
5076 return (NO_EXPANSION);
5077
5078 /* mk_alexpansion puts an extra space on the end of the alias expansion,
5079 so the lookahead by the parser works right. If this gets changed,
5080 make sure the code in shell_getc that deals with reaching the end of
5081 an expanded alias is changed with it. */
5082 expanded = ap ? mk_alexpansion (ap->value) : (char *)NULL;
5083
5084 if (expanded)
5085 {
5086 push_string (expanded, ap->flags & AL_EXPANDNEXT, ap);
5087 return (RE_READ_TOKEN);
5088 }
5089 else
5090 /* This is an eligible token that does not have an expansion. */
5091 return (NO_EXPANSION);
5092 }
5093 return (NO_EXPANSION);
5094 }
5095 #endif /* ALIAS */
5096
5097 static int
5098 time_command_acceptable ()
5099 {
5100 #if defined (COMMAND_TIMING)
5101 int i;
5102
5103 if (posixly_correct && shell_compatibility_level > 41)
5104 {
5105 /* Quick check of the rest of the line to find the next token. If it
5106 begins with a `-', Posix says to not return `time' as the token.
5107 This was interp 267. */
5108 i = shell_input_line_index;
5109 while (i < shell_input_line_len && (shell_input_line[i] == ' ' || shell_input_line[i] == '\t'))
5110 i++;
5111 if (shell_input_line[i] == '-')
5112 return 0;
5113 }
5114
5115 switch (last_read_token)
5116 {
5117 case 0:
5118 case ';':
5119 case '\n':
5120 case AND_AND:
5121 case OR_OR:
5122 case '&':
5123 case DO:
5124 case THEN:
5125 case ELSE:
5126 case '{': /* } */
5127 case '(': /* ) */
5128 case BANG: /* ! time pipeline */
5129 case TIME: /* time time pipeline */
5130 case TIMEOPT: /* time -p time pipeline */
5131 case TIMEIGN: /* time -p -- ... */
5132 return 1;
5133 default:
5134 return 0;
5135 }
5136 #else
5137 return 0;
5138 #endif /* COMMAND_TIMING */
5139 }
5140
5141 /* Handle special cases of token recognition:
5142 IN is recognized if the last token was WORD and the token
5143 before that was FOR or CASE or SELECT.
5144
5145 DO is recognized if the last token was WORD and the token
5146 before that was FOR or SELECT.
5147
5148 ESAC is recognized if the last token caused `esacs_needed_count'
5149 to be set
5150
5151 `{' is recognized if the last token as WORD and the token
5152 before that was FUNCTION, or if we just parsed an arithmetic
5153 `for' command.
5154
5155 `}' is recognized if there is an unclosed `{' present.
5156
5157 `-p' is returned as TIMEOPT if the last read token was TIME.
5158 `--' is returned as TIMEIGN if the last read token was TIMEOPT.
5159
5160 ']]' is returned as COND_END if the parser is currently parsing
5161 a conditional expression ((parser_state & PST_CONDEXPR) != 0)
5162
5163 `time' is returned as TIME if and only if it is immediately
5164 preceded by one of `;', `\n', `||', `&&', or `&'.
5165 */
5166
5167 static int
5168 special_case_tokens (tokstr)
5169 char *tokstr;
5170 {
5171 if ((last_read_token == WORD) &&
5172 #if defined (SELECT_COMMAND)
5173 ((token_before_that == FOR) || (token_before_that == CASE) || (token_before_that == SELECT)) &&
5174 #else
5175 ((token_before_that == FOR) || (token_before_that == CASE)) &&
5176 #endif
5177 (tokstr[0] == 'i' && tokstr[1] == 'n' && tokstr[2] == 0))
5178 {
5179 if (token_before_that == CASE)
5180 {
5181 parser_state |= PST_CASEPAT;
5182 esacs_needed_count++;
5183 }
5184 return (IN);
5185 }
5186
5187 if (last_read_token == WORD &&
5188 #if defined (SELECT_COMMAND)
5189 (token_before_that == FOR || token_before_that == SELECT) &&
5190 #else
5191 (token_before_that == FOR) &&
5192 #endif
5193 (tokstr[0] == 'd' && tokstr[1] == 'o' && tokstr[2] == '\0'))
5194 return (DO);
5195
5196 /* Ditto for ESAC in the CASE case.
5197 Specifically, this handles "case word in esac", which is a legal
5198 construct, certainly because someone will pass an empty arg to the
5199 case construct, and we don't want it to barf. Of course, we should
5200 insist that the case construct has at least one pattern in it, but
5201 the designers disagree. */
5202 if (esacs_needed_count)
5203 {
5204 esacs_needed_count--;
5205 if (STREQ (tokstr, "esac"))
5206 {
5207 parser_state &= ~PST_CASEPAT;
5208 return (ESAC);
5209 }
5210 }
5211
5212 /* The start of a shell function definition. */
5213 if (parser_state & PST_ALLOWOPNBRC)
5214 {
5215 parser_state &= ~PST_ALLOWOPNBRC;
5216 if (tokstr[0] == '{' && tokstr[1] == '\0') /* } */
5217 {
5218 open_brace_count++;
5219 function_bstart = line_number;
5220 return ('{'); /* } */
5221 }
5222 }
5223
5224 /* We allow a `do' after a for ((...)) without an intervening
5225 list_terminator */
5226 if (last_read_token == ARITH_FOR_EXPRS && tokstr[0] == 'd' && tokstr[1] == 'o' && !tokstr[2])
5227 return (DO);
5228 if (last_read_token == ARITH_FOR_EXPRS && tokstr[0] == '{' && tokstr[1] == '\0') /* } */
5229 {
5230 open_brace_count++;
5231 return ('{'); /* } */
5232 }
5233
5234 if (open_brace_count && reserved_word_acceptable (last_read_token) && tokstr[0] == '}' && !tokstr[1])
5235 {
5236 open_brace_count--; /* { */
5237 return ('}');
5238 }
5239
5240 #if defined (COMMAND_TIMING)
5241 /* Handle -p after `time'. */
5242 if (last_read_token == TIME && tokstr[0] == '-' && tokstr[1] == 'p' && !tokstr[2])
5243 return (TIMEOPT);
5244 /* Handle -- after `time -p'. */
5245 if (last_read_token == TIMEOPT && tokstr[0] == '-' && tokstr[1] == '-' && !tokstr[2])
5246 return (TIMEIGN);
5247 #endif
5248
5249 #if defined (COND_COMMAND) /* [[ */
5250 if ((parser_state & PST_CONDEXPR) && tokstr[0] == ']' && tokstr[1] == ']' && tokstr[2] == '\0')
5251 return (COND_END);
5252 #endif
5253
5254 return (-1);
5255 }
5256
5257 /* Called from shell.c when Control-C is typed at top level. Or
5258 by the error rule at top level. */
5259 void
5260 reset_parser ()
5261 {
5262 dstack.delimiter_depth = 0; /* No delimiters found so far. */
5263 open_brace_count = 0;
5264
5265 #if defined (EXTENDED_GLOB)
5266 /* Reset to global value of extended glob */
5267 if (parser_state & PST_EXTPAT)
5268 extended_glob = global_extglob;
5269 #endif
5270
5271 parser_state = 0;
5272
5273 #if defined (ALIAS) || defined (DPAREN_ARITHMETIC)
5274 if (pushed_string_list)
5275 free_string_list ();
5276 #endif /* ALIAS || DPAREN_ARITHMETIC */
5277
5278 if (shell_input_line)
5279 {
5280 free (shell_input_line);
5281 shell_input_line = (char *)NULL;
5282 shell_input_line_size = shell_input_line_index = 0;
5283 }
5284
5285 FREE (word_desc_to_read);
5286 word_desc_to_read = (WORD_DESC *)NULL;
5287
5288 eol_ungetc_lookahead = 0;
5289
5290 current_token = '\n'; /* XXX */
5291 last_read_token = '\n';
5292 token_to_read = '\n';
5293 }
5294
5295 /* Read the next token. Command can be READ (normal operation) or
5296 RESET (to normalize state). */
5297 static int
5298 read_token (command)
5299 int command;
5300 {
5301 int character; /* Current character. */
5302 int peek_char; /* Temporary look-ahead character. */
5303 int result; /* The thing to return. */
5304
5305 if (command == RESET)
5306 {
5307 reset_parser ();
5308 return ('\n');
5309 }
5310
5311 if (token_to_read)
5312 {
5313 result = token_to_read;
5314 if (token_to_read == WORD || token_to_read == ASSIGNMENT_WORD)
5315 {
5316 yylval.word = word_desc_to_read;
5317 word_desc_to_read = (WORD_DESC *)NULL;
5318 }
5319 token_to_read = 0;
5320 return (result);
5321 }
5322
5323 #if defined (COND_COMMAND)
5324 if ((parser_state & (PST_CONDCMD|PST_CONDEXPR)) == PST_CONDCMD)
5325 {
5326 cond_lineno = line_number;
5327 parser_state |= PST_CONDEXPR;
5328 yylval.command = parse_cond_command ();
5329 if (cond_token != COND_END)
5330 {
5331 cond_error ();
5332 return (-1);
5333 }
5334 token_to_read = COND_END;
5335 parser_state &= ~(PST_CONDEXPR|PST_CONDCMD);
5336 return (COND_CMD);
5337 }
5338 #endif
5339
5340 #if defined (ALIAS)
5341 /* This is a place to jump back to once we have successfully expanded a
5342 token with an alias and pushed the string with push_string () */
5343 re_read_token:
5344 #endif /* ALIAS */
5345
5346 /* Read a single word from input. Start by skipping blanks. */
5347 while ((character = shell_getc (1)) != EOF && shellblank (character))
5348 ;
5349
5350 if (character == EOF)
5351 {
5352 EOF_Reached = 1;
5353 return (yacc_EOF);
5354 }
5355
5356 if MBTEST(character == '#' && (!interactive || interactive_comments))
5357 {
5358 /* A comment. Discard until EOL or EOF, and then return a newline. */
5359 discard_until ('\n');
5360 shell_getc (0);
5361 character = '\n'; /* this will take the next if statement and return. */
5362 }
5363
5364 if (character == '\n')
5365 {
5366 /* If we're about to return an unquoted newline, we can go and collect
5367 the text of any pending here document. */
5368 if (need_here_doc)
5369 gather_here_documents ();
5370
5371 #if defined (ALIAS)
5372 parser_state &= ~PST_ALEXPNEXT;
5373 #endif /* ALIAS */
5374
5375 parser_state &= ~PST_ASSIGNOK;
5376
5377 return (character);
5378 }
5379
5380 if (parser_state & PST_REGEXP)
5381 goto tokword;
5382
5383 /* Shell meta-characters. */
5384 if MBTEST(shellmeta (character) && ((parser_state & PST_DBLPAREN) == 0))
5385 {
5386 #if defined (ALIAS)
5387 /* Turn off alias tokenization iff this character sequence would
5388 not leave us ready to read a command. */
5389 if (character == '<' || character == '>')
5390 parser_state &= ~PST_ALEXPNEXT;
5391 #endif /* ALIAS */
5392
5393 parser_state &= ~PST_ASSIGNOK;
5394
5395 peek_char = shell_getc (1);
5396 if (character == peek_char)
5397 {
5398 switch (character)
5399 {
5400 case '<':
5401 /* If '<' then we could be at "<<" or at "<<-". We have to
5402 look ahead one more character. */
5403 peek_char = shell_getc (1);
5404 if MBTEST(peek_char == '-')
5405 return (LESS_LESS_MINUS);
5406 else if MBTEST(peek_char == '<')
5407 return (LESS_LESS_LESS);
5408 else
5409 {
5410 shell_ungetc (peek_char);
5411 return (LESS_LESS);
5412 }
5413
5414 case '>':
5415 return (GREATER_GREATER);
5416
5417 case ';':
5418 parser_state |= PST_CASEPAT;
5419 #if defined (ALIAS)
5420 parser_state &= ~PST_ALEXPNEXT;
5421 #endif /* ALIAS */
5422
5423 peek_char = shell_getc (1);
5424 if MBTEST(peek_char == '&')
5425 return (SEMI_SEMI_AND);
5426 else
5427 {
5428 shell_ungetc (peek_char);
5429 return (SEMI_SEMI);
5430 }
5431
5432 case '&':
5433 return (AND_AND);
5434
5435 case '|':
5436 return (OR_OR);
5437
5438 #if defined (DPAREN_ARITHMETIC) || defined (ARITH_FOR_COMMAND)
5439 case '(': /* ) */
5440 result = parse_dparen (character);
5441 if (result == -2)
5442 break;
5443 else
5444 return result;
5445 #endif
5446 }
5447 }
5448 else if MBTEST(character == '<' && peek_char == '&')
5449 return (LESS_AND);
5450 else if MBTEST(character == '>' && peek_char == '&')
5451 return (GREATER_AND);
5452 else if MBTEST(character == '<' && peek_char == '>')
5453 return (LESS_GREATER);
5454 else if MBTEST(character == '>' && peek_char == '|')
5455 return (GREATER_BAR);
5456 else if MBTEST(character == '&' && peek_char == '>')
5457 {
5458 peek_char = shell_getc (1);
5459 if MBTEST(peek_char == '>')
5460 return (AND_GREATER_GREATER);
5461 else
5462 {
5463 shell_ungetc (peek_char);
5464 return (AND_GREATER);
5465 }
5466 }
5467 else if MBTEST(character == '|' && peek_char == '&')
5468 return (BAR_AND);
5469 else if MBTEST(character == ';' && peek_char == '&')
5470 {
5471 parser_state |= PST_CASEPAT;
5472 #if defined (ALIAS)
5473 parser_state &= ~PST_ALEXPNEXT;
5474 #endif /* ALIAS */
5475 return (SEMI_AND);
5476 }
5477
5478 shell_ungetc (peek_char);
5479
5480 /* If we look like we are reading the start of a function
5481 definition, then let the reader know about it so that
5482 we will do the right thing with `{'. */
5483 if MBTEST(character == ')' && last_read_token == '(' && token_before_that == WORD)
5484 {
5485 parser_state |= PST_ALLOWOPNBRC;
5486 #if defined (ALIAS)
5487 parser_state &= ~PST_ALEXPNEXT;
5488 #endif /* ALIAS */
5489 function_dstart = line_number;
5490 }
5491
5492 /* case pattern lists may be preceded by an optional left paren. If
5493 we're not trying to parse a case pattern list, the left paren
5494 indicates a subshell. */
5495 if MBTEST(character == '(' && (parser_state & PST_CASEPAT) == 0) /* ) */
5496 parser_state |= PST_SUBSHELL;
5497 /*(*/
5498 else if MBTEST((parser_state & PST_CASEPAT) && character == ')')
5499 parser_state &= ~PST_CASEPAT;
5500 /*(*/
5501 else if MBTEST((parser_state & PST_SUBSHELL) && character == ')')
5502 parser_state &= ~PST_SUBSHELL;
5503
5504 #if defined (PROCESS_SUBSTITUTION)
5505 /* Check for the constructs which introduce process substitution.
5506 Shells running in `posix mode' don't do process substitution. */
5507 if MBTEST(posixly_correct || ((character != '>' && character != '<') || peek_char != '(')) /*)*/
5508 #endif /* PROCESS_SUBSTITUTION */
5509 return (character);
5510 }
5511
5512 /* Hack <&- (close stdin) case. Also <&N- (dup and close). */
5513 if MBTEST(character == '-' && (last_read_token == LESS_AND || last_read_token == GREATER_AND))
5514 return (character);
5515
5516 tokword:
5517 /* Okay, if we got this far, we have to read a word. Read one,
5518 and then check it against the known ones. */
5519 result = read_token_word (character);
5520 #if defined (ALIAS)
5521 if (result == RE_READ_TOKEN)
5522 goto re_read_token;
5523 #endif
5524 return result;
5525 }
5526
5527 /*
5528 * Match a $(...) or other grouping construct. This has to handle embedded
5529 * quoted strings ('', ``, "") and nested constructs. It also must handle
5530 * reprompting the user, if necessary, after reading a newline, and returning
5531 * correct error values if it reads EOF.
5532 */
5533 #define P_FIRSTCLOSE 0x0001
5534 #define P_ALLOWESC 0x0002
5535 #define P_DQUOTE 0x0004
5536 #define P_COMMAND 0x0008 /* parsing a command, so look for comments */
5537 #define P_BACKQUOTE 0x0010 /* parsing a backquoted command substitution */
5538 #define P_ARRAYSUB 0x0020 /* parsing a [...] array subscript for assignment */
5539 #define P_DOLBRACE 0x0040 /* parsing a ${...} construct */
5540
5541 /* Lexical state while parsing a grouping construct or $(...). */
5542 #define LEX_WASDOL 0x001
5543 #define LEX_CKCOMMENT 0x002
5544 #define LEX_INCOMMENT 0x004
5545 #define LEX_PASSNEXT 0x008
5546 #define LEX_RESWDOK 0x010
5547 #define LEX_CKCASE 0x020
5548 #define LEX_INCASE 0x040
5549 #define LEX_INHEREDOC 0x080
5550 #define LEX_HEREDELIM 0x100 /* reading here-doc delimiter */
5551 #define LEX_STRIPDOC 0x200 /* <<- strip tabs from here doc delim */
5552 #define LEX_INWORD 0x400
5553
5554 #define COMSUB_META(ch) ((ch) == ';' || (ch) == '&' || (ch) == '|')
5555
5556 #define CHECK_NESTRET_ERROR() \
5557 do { \
5558 if (nestret == &matched_pair_error) \
5559 { \
5560 free (ret); \
5561 return &matched_pair_error; \
5562 } \
5563 } while (0)
5564
5565 #define APPEND_NESTRET() \
5566 do { \
5567 if (nestlen) \
5568 { \
5569 RESIZE_MALLOCED_BUFFER (ret, retind, nestlen, retsize, 64); \
5570 strcpy (ret + retind, nestret); \
5571 retind += nestlen; \
5572 } \
5573 } while (0)
5574
5575 static char matched_pair_error;
5576
5577 static char *
5578 parse_matched_pair (qc, open, close, lenp, flags)
5579 int qc; /* `"' if this construct is within double quotes */
5580 int open, close;
5581 int *lenp, flags;
5582 {
5583 int count, ch, tflags;
5584 int nestlen, ttranslen, start_lineno;
5585 char *ret, *nestret, *ttrans;
5586 int retind, retsize, rflags;
5587 int dolbrace_state;
5588
5589 dolbrace_state = (flags & P_DOLBRACE) ? DOLBRACE_PARAM : 0;
5590
5591 /*itrace("parse_matched_pair[%d]: open = %c close = %c flags = %d", line_number, open, close, flags);*/
5592 count = 1;
5593 tflags = 0;
5594
5595 if ((flags & P_COMMAND) && qc != '`' && qc != '\'' && qc != '"' && (flags & P_DQUOTE) == 0)
5596 tflags |= LEX_CKCOMMENT;
5597
5598 /* RFLAGS is the set of flags we want to pass to recursive calls. */
5599 rflags = (qc == '"') ? P_DQUOTE : (flags & P_DQUOTE);
5600
5601 ret = (char *)xmalloc (retsize = 64);
5602 retind = 0;
5603
5604 start_lineno = line_number;
5605 while (count)
5606 {
5607 ch = shell_getc (qc != '\'' && (tflags & (LEX_PASSNEXT)) == 0);
5608
5609 if (ch == EOF)
5610 {
5611 free (ret);
5612 parser_error (start_lineno, _("unexpected EOF while looking for matching `%c'"), close);
5613 EOF_Reached = 1; /* XXX */
5614 return (&matched_pair_error);
5615 }
5616
5617 /* Possible reprompting. */
5618 if (ch == '\n' && SHOULD_PROMPT ())
5619 prompt_again ();
5620
5621 /* Don't bother counting parens or doing anything else if in a comment
5622 or part of a case statement */
5623 if (tflags & LEX_INCOMMENT)
5624 {
5625 /* Add this character. */
5626 RESIZE_MALLOCED_BUFFER (ret, retind, 1, retsize, 64);
5627 ret[retind++] = ch;
5628
5629 if (ch == '\n')
5630 tflags &= ~LEX_INCOMMENT;
5631
5632 continue;
5633 }
5634
5635 /* Not exactly right yet, should handle shell metacharacters, too. If
5636 any changes are made to this test, make analogous changes to subst.c:
5637 extract_delimited_string(). */
5638 else if MBTEST((tflags & LEX_CKCOMMENT) && (tflags & LEX_INCOMMENT) == 0 && ch == '#' && (retind == 0 || ret[retind-1] == '\n' || shellblank (ret[retind - 1])))
5639 tflags |= LEX_INCOMMENT;
5640
5641 if (tflags & LEX_PASSNEXT) /* last char was backslash */
5642 {
5643 tflags &= ~LEX_PASSNEXT;
5644 if (qc != '\'' && ch == '\n') /* double-quoted \<newline> disappears. */
5645 {
5646 if (retind > 0)
5647 retind--; /* swallow previously-added backslash */
5648 continue;
5649 }
5650
5651 RESIZE_MALLOCED_BUFFER (ret, retind, 2, retsize, 64);
5652 if MBTEST(ch == CTLESC)
5653 ret[retind++] = CTLESC;
5654 ret[retind++] = ch;
5655 continue;
5656 }
5657 /* If we're reparsing the input (e.g., from parse_string_to_word_list),
5658 we've already prepended CTLESC to single-quoted results of $'...'.
5659 We may want to do this for other CTLESC-quoted characters in
5660 reparse, too. */
5661 else if MBTEST((parser_state & PST_REPARSE) && open == '\'' && (ch == CTLESC || ch == CTLNUL))
5662 {
5663 RESIZE_MALLOCED_BUFFER (ret, retind, 1, retsize, 64);
5664 ret[retind++] = ch;
5665 continue;
5666 }
5667 else if MBTEST(ch == CTLESC || ch == CTLNUL) /* special shell escapes */
5668 {
5669 RESIZE_MALLOCED_BUFFER (ret, retind, 2, retsize, 64);
5670 ret[retind++] = CTLESC;
5671 ret[retind++] = ch;
5672 continue;
5673 }
5674 else if MBTEST(ch == close) /* ending delimiter */
5675 count--;
5676 /* handle nested ${...} specially. */
5677 else if MBTEST(open != close && (tflags & LEX_WASDOL) && open == '{' && ch == open) /* } */
5678 count++;
5679 else if MBTEST(((flags & P_FIRSTCLOSE) == 0) && ch == open) /* nested begin */
5680 count++;
5681
5682 /* Add this character. */
5683 RESIZE_MALLOCED_BUFFER (ret, retind, 1, retsize, 64);
5684 ret[retind++] = ch;
5685
5686 /* If we just read the ending character, don't bother continuing. */
5687 if (count == 0)
5688 break;
5689
5690 if (open == '\'') /* '' inside grouping construct */
5691 {
5692 if MBTEST((flags & P_ALLOWESC) && ch == '\\')
5693 tflags |= LEX_PASSNEXT;
5694 continue;
5695 }
5696
5697 if MBTEST(ch == '\\') /* backslashes */
5698 tflags |= LEX_PASSNEXT;
5699
5700 /* Based on which dolstate is currently in (param, op, or word),
5701 decide what the op is. We're really only concerned if it's % or
5702 #, so we can turn on a flag that says whether or not we should
5703 treat single quotes as special when inside a double-quoted
5704 ${...}. This logic must agree with subst.c:extract_dollar_brace_string
5705 since they share the same defines. */
5706 /* FLAG POSIX INTERP 221 */
5707 if (flags & P_DOLBRACE)
5708 {
5709 /* ${param%[%]word} */
5710 if MBTEST(dolbrace_state == DOLBRACE_PARAM && ch == '%' && retind > 1)
5711 dolbrace_state = DOLBRACE_QUOTE;
5712 /* ${param#[#]word} */
5713 else if MBTEST(dolbrace_state == DOLBRACE_PARAM && ch == '#' && retind > 1)
5714 dolbrace_state = DOLBRACE_QUOTE;
5715 /* ${param/[/]pat/rep} */
5716 else if MBTEST(dolbrace_state == DOLBRACE_PARAM && ch == '/' && retind > 1)
5717 dolbrace_state = DOLBRACE_QUOTE2; /* XXX */
5718 /* ${param^[^]pat} */
5719 else if MBTEST(dolbrace_state == DOLBRACE_PARAM && ch == '^' && retind > 1)
5720 dolbrace_state = DOLBRACE_QUOTE;
5721 /* ${param,[,]pat} */
5722 else if MBTEST(dolbrace_state == DOLBRACE_PARAM && ch == ',' && retind > 1)
5723 dolbrace_state = DOLBRACE_QUOTE;
5724 else if MBTEST(dolbrace_state == DOLBRACE_PARAM && strchr ("#%^,~:-=?+/", ch) != 0)
5725 dolbrace_state = DOLBRACE_OP;
5726 else if MBTEST(dolbrace_state == DOLBRACE_OP && strchr ("#%^,~:-=?+/", ch) == 0)
5727 dolbrace_state = DOLBRACE_WORD;
5728 }
5729
5730 /* The big hammer. Single quotes aren't special in double quotes. The
5731 problem is that Posix used to say the single quotes are semi-special:
5732 within a double-quoted ${...} construct "an even number of
5733 unescaped double-quotes or single-quotes, if any, shall occur." */
5734 /* This was changed in Austin Group Interp 221 */
5735 if MBTEST(posixly_correct && shell_compatibility_level > 41 && dolbrace_state != DOLBRACE_QUOTE && dolbrace_state != DOLBRACE_QUOTE2 && (flags & P_DQUOTE) && (flags & P_DOLBRACE) && ch == '\'')
5736 continue;
5737
5738 /* Could also check open == '`' if we want to parse grouping constructs
5739 inside old-style command substitution. */
5740 if (open != close) /* a grouping construct */
5741 {
5742 if MBTEST(shellquote (ch))
5743 {
5744 /* '', ``, or "" inside $(...) or other grouping construct. */
5745 push_delimiter (dstack, ch);
5746 if MBTEST((tflags & LEX_WASDOL) && ch == '\'') /* $'...' inside group */
5747 nestret = parse_matched_pair (ch, ch, ch, &nestlen, P_ALLOWESC|rflags);
5748 else
5749 nestret = parse_matched_pair (ch, ch, ch, &nestlen, rflags);
5750 pop_delimiter (dstack);
5751 CHECK_NESTRET_ERROR ();
5752
5753 if MBTEST((tflags & LEX_WASDOL) && ch == '\'' && (extended_quote || (rflags & P_DQUOTE) == 0))
5754 {
5755 /* Translate $'...' here. */
5756 ttrans = ansiexpand (nestret, 0, nestlen - 1, &ttranslen);
5757 xfree (nestret);
5758
5759 /* If we're parsing a double-quoted brace expansion and we are
5760 not in a place where single quotes are treated specially,
5761 make sure we single-quote the results of the ansi
5762 expansion because quote removal should remove them later */
5763 /* FLAG POSIX INTERP 221 */
5764 if ((shell_compatibility_level > 42) && (rflags & P_DQUOTE) && (dolbrace_state == DOLBRACE_QUOTE2) && (flags & P_DOLBRACE))
5765 {
5766 nestret = sh_single_quote (ttrans);
5767 free (ttrans);
5768 nestlen = strlen (nestret);
5769 }
5770 else if ((rflags & P_DQUOTE) == 0)
5771 {
5772 nestret = sh_single_quote (ttrans);
5773 free (ttrans);
5774 nestlen = strlen (nestret);
5775 }
5776 else
5777 {
5778 nestret = ttrans;
5779 nestlen = ttranslen;
5780 }
5781 retind -= 2; /* back up before the $' */
5782 }
5783 else if MBTEST((tflags & LEX_WASDOL) && ch == '"' && (extended_quote || (rflags & P_DQUOTE) == 0))
5784 {
5785 /* Locale expand $"..." here. */
5786 ttrans = localeexpand (nestret, 0, nestlen - 1, start_lineno, &ttranslen);
5787 xfree (nestret);
5788
5789 nestret = sh_mkdoublequoted (ttrans, ttranslen, 0);
5790 free (ttrans);
5791 nestlen = ttranslen + 2;
5792 retind -= 2; /* back up before the $" */
5793 }
5794
5795 APPEND_NESTRET ();
5796 FREE (nestret);
5797 }
5798 else if ((flags & P_ARRAYSUB) && (tflags & LEX_WASDOL) && (ch == '(' || ch == '{' || ch == '[')) /* ) } ] */
5799 goto parse_dollar_word;
5800 }
5801 /* Parse an old-style command substitution within double quotes as a
5802 single word. */
5803 /* XXX - sh and ksh93 don't do this - XXX */
5804 else if MBTEST(open == '"' && ch == '`')
5805 {
5806 nestret = parse_matched_pair (0, '`', '`', &nestlen, rflags);
5807
5808 CHECK_NESTRET_ERROR ();
5809 APPEND_NESTRET ();
5810
5811 FREE (nestret);
5812 }
5813 else if MBTEST(open != '`' && (tflags & LEX_WASDOL) && (ch == '(' || ch == '{' || ch == '[')) /* ) } ] */
5814 /* check for $(), $[], or ${} inside quoted string. */
5815 {
5816 parse_dollar_word:
5817 if (open == ch) /* undo previous increment */
5818 count--;
5819 if (ch == '(') /* ) */
5820 nestret = parse_comsub (0, '(', ')', &nestlen, (rflags|P_COMMAND) & ~P_DQUOTE);
5821 else if (ch == '{') /* } */
5822 nestret = parse_matched_pair (0, '{', '}', &nestlen, P_FIRSTCLOSE|P_DOLBRACE|rflags);
5823 else if (ch == '[') /* ] */
5824 nestret = parse_matched_pair (0, '[', ']', &nestlen, rflags);
5825
5826 CHECK_NESTRET_ERROR ();
5827 APPEND_NESTRET ();
5828
5829 FREE (nestret);
5830 }
5831 if MBTEST(ch == '$')
5832 tflags |= LEX_WASDOL;
5833 else
5834 tflags &= ~LEX_WASDOL;
5835 }
5836
5837 ret[retind] = '\0';
5838 if (lenp)
5839 *lenp = retind;
5840 /*itrace("parse_matched_pair[%d]: returning %s", line_number, ret);*/
5841 return ret;
5842 }
5843
5844 /* Parse a $(...) command substitution. This is messier than I'd like, and
5845 reproduces a lot more of the token-reading code than I'd like. */
5846 static char *
5847 parse_comsub (qc, open, close, lenp, flags)
5848 int qc; /* `"' if this construct is within double quotes */
5849 int open, close;
5850 int *lenp, flags;
5851 {
5852 int count, ch, peekc, tflags, lex_rwlen, lex_wlen, lex_firstind;
5853 int nestlen, ttranslen, start_lineno;
5854 char *ret, *nestret, *ttrans, *heredelim;
5855 int retind, retsize, rflags, hdlen;
5856
5857 /* Posix interp 217 says arithmetic expressions have precedence, so
5858 assume $(( introduces arithmetic expansion and parse accordingly. */
5859 peekc = shell_getc (0);
5860 shell_ungetc (peekc);
5861 if (peekc == '(')
5862 return (parse_matched_pair (qc, open, close, lenp, 0));
5863
5864 /*itrace("parse_comsub: qc = `%c' open = %c close = %c", qc, open, close);*/
5865 count = 1;
5866 tflags = LEX_RESWDOK;
5867
5868 if ((flags & P_COMMAND) && qc != '\'' && qc != '"' && (flags & P_DQUOTE) == 0)
5869 tflags |= LEX_CKCASE;
5870 if ((tflags & LEX_CKCASE) && (interactive == 0 || interactive_comments))
5871 tflags |= LEX_CKCOMMENT;
5872
5873 /* RFLAGS is the set of flags we want to pass to recursive calls. */
5874 rflags = (flags & P_DQUOTE);
5875
5876 ret = (char *)xmalloc (retsize = 64);
5877 retind = 0;
5878
5879 start_lineno = line_number;
5880 lex_rwlen = lex_wlen = 0;
5881
5882 heredelim = 0;
5883 lex_firstind = -1;
5884
5885 while (count)
5886 {
5887 comsub_readchar:
5888 ch = shell_getc (qc != '\'' && (tflags & (LEX_INCOMMENT|LEX_PASSNEXT)) == 0);
5889
5890 if (ch == EOF)
5891 {
5892 eof_error:
5893 free (ret);
5894 FREE (heredelim);
5895 parser_error (start_lineno, _("unexpected EOF while looking for matching `%c'"), close);
5896 EOF_Reached = 1; /* XXX */
5897 return (&matched_pair_error);
5898 }
5899
5900 /* If we hit the end of a line and are reading the contents of a here
5901 document, and it's not the same line that the document starts on,
5902 check for this line being the here doc delimiter. Otherwise, if
5903 we're in a here document, mark the next character as the beginning
5904 of a line. */
5905 if (ch == '\n')
5906 {
5907 if ((tflags & LEX_HEREDELIM) && heredelim)
5908 {
5909 tflags &= ~LEX_HEREDELIM;
5910 tflags |= LEX_INHEREDOC;
5911 lex_firstind = retind + 1;
5912 }
5913 else if (tflags & LEX_INHEREDOC)
5914 {
5915 int tind;
5916 tind = lex_firstind;
5917 while ((tflags & LEX_STRIPDOC) && ret[tind] == '\t')
5918 tind++;
5919 if (STREQN (ret + tind, heredelim, hdlen))
5920 {
5921 tflags &= ~(LEX_STRIPDOC|LEX_INHEREDOC);
5922 /*itrace("parse_comsub:%d: found here doc end `%s'", line_number, ret + tind);*/
5923 free (heredelim);
5924 heredelim = 0;
5925 lex_firstind = -1;
5926 }
5927 else
5928 lex_firstind = retind + 1;
5929 }
5930 }
5931
5932 /* Possible reprompting. */
5933 if (ch == '\n' && SHOULD_PROMPT ())
5934 prompt_again ();
5935
5936 /* XXX -- possibly allow here doc to be delimited by ending right
5937 paren. */
5938 if ((tflags & LEX_INHEREDOC) && ch == close && count == 1)
5939 {
5940 int tind;
5941 /*itrace("parse_comsub: in here doc, ch == close, retind - firstind = %d hdlen = %d retind = %d", retind-lex_firstind, hdlen, retind);*/
5942 tind = lex_firstind;
5943 while ((tflags & LEX_STRIPDOC) && ret[tind] == '\t')
5944 tind++;
5945 if (retind-tind == hdlen && STREQN (ret + tind, heredelim, hdlen))
5946 {
5947 tflags &= ~(LEX_STRIPDOC|LEX_INHEREDOC);
5948 /*itrace("parse_comsub:%d: found here doc end `%s'", line_number, ret + tind);*/
5949 free (heredelim);
5950 heredelim = 0;
5951 lex_firstind = -1;
5952 }
5953 }
5954
5955 /* Don't bother counting parens or doing anything else if in a comment */
5956 if (tflags & (LEX_INCOMMENT|LEX_INHEREDOC))
5957 {
5958 /* Add this character. */
5959 RESIZE_MALLOCED_BUFFER (ret, retind, 1, retsize, 64);
5960 ret[retind++] = ch;
5961
5962 if ((tflags & LEX_INCOMMENT) && ch == '\n')
5963 {
5964 /*itrace("parse_comsub:%d: lex_incomment -> 0 ch = `%c'", line_number, ch);*/
5965 tflags &= ~LEX_INCOMMENT;
5966 }
5967
5968 continue;
5969 }
5970
5971 if (tflags & LEX_PASSNEXT) /* last char was backslash */
5972 {
5973 /*itrace("parse_comsub:%d: lex_passnext -> 0 ch = `%c' (%d)", line_number, ch, __LINE__);*/
5974 tflags &= ~LEX_PASSNEXT;
5975 if (qc != '\'' && ch == '\n') /* double-quoted \<newline> disappears. */
5976 {
5977 if (retind > 0)
5978 retind--; /* swallow previously-added backslash */
5979 continue;
5980 }
5981
5982 RESIZE_MALLOCED_BUFFER (ret, retind, 2, retsize, 64);
5983 if MBTEST(ch == CTLESC)
5984 ret[retind++] = CTLESC;
5985 ret[retind++] = ch;
5986 continue;
5987 }
5988
5989 /* If this is a shell break character, we are not in a word. If not,
5990 we either start or continue a word. */
5991 if MBTEST(shellbreak (ch))
5992 {
5993 tflags &= ~LEX_INWORD;
5994 /*itrace("parse_comsub:%d: lex_inword -> 0 ch = `%c' (%d)", line_number, ch, __LINE__);*/
5995 }
5996 else
5997 {
5998 if (tflags & LEX_INWORD)
5999 {
6000 lex_wlen++;
6001 /*itrace("parse_comsub:%d: lex_inword == 1 ch = `%c' lex_wlen = %d (%d)", line_number, ch, lex_wlen, __LINE__);*/
6002 }
6003 else
6004 {
6005 /*itrace("parse_comsub:%d: lex_inword -> 1 ch = `%c' (%d)", line_number, ch, __LINE__);*/
6006 tflags |= LEX_INWORD;
6007 lex_wlen = 0;
6008 }
6009 }
6010
6011 /* Skip whitespace */
6012 if MBTEST(shellblank (ch) && (tflags & LEX_HEREDELIM) == 0 && lex_rwlen == 0)
6013 {
6014 /* Add this character. */
6015 RESIZE_MALLOCED_BUFFER (ret, retind, 1, retsize, 64);
6016 ret[retind++] = ch;
6017 continue;
6018 }
6019
6020 /* Either we are looking for the start of the here-doc delimiter
6021 (lex_firstind == -1) or we are reading one (lex_firstind >= 0).
6022 If this character is a shell break character and we are reading
6023 the delimiter, save it and note that we are now reading a here
6024 document. If we've found the start of the delimiter, note it by
6025 setting lex_firstind. Backslashes can quote shell metacharacters
6026 in here-doc delimiters. */
6027 if (tflags & LEX_HEREDELIM)
6028 {
6029 if (lex_firstind == -1 && shellbreak (ch) == 0)
6030 lex_firstind = retind;
6031 #if 0
6032 else if (heredelim && (tflags & LEX_PASSNEXT) == 0 && ch == '\n')
6033 {
6034 tflags |= LEX_INHEREDOC;
6035 tflags &= ~LEX_HEREDELIM;
6036 lex_firstind = retind + 1;
6037 }
6038 #endif
6039 else if (lex_firstind >= 0 && (tflags & LEX_PASSNEXT) == 0 && shellbreak (ch))
6040 {
6041 if (heredelim == 0)
6042 {
6043 nestret = substring (ret, lex_firstind, retind);
6044 heredelim = string_quote_removal (nestret, 0);
6045 free (nestret);
6046 hdlen = STRLEN(heredelim);
6047 /*itrace("parse_comsub:%d: found here doc delimiter `%s' (%d)", line_number, heredelim, hdlen);*/
6048 }
6049 if (ch == '\n')
6050 {
6051 tflags |= LEX_INHEREDOC;
6052 tflags &= ~LEX_HEREDELIM;
6053 lex_firstind = retind + 1;
6054 }
6055 else
6056 lex_firstind = -1;
6057 }
6058 }
6059
6060 /* Meta-characters that can introduce a reserved word. Not perfect yet. */
6061 if MBTEST((tflags & LEX_RESWDOK) == 0 && (tflags & LEX_CKCASE) && (tflags & LEX_INCOMMENT) == 0 && (shellmeta(ch) || ch == '\n'))
6062 {
6063 /* Add this character. */
6064 RESIZE_MALLOCED_BUFFER (ret, retind, 1, retsize, 64);
6065 ret[retind++] = ch;
6066 peekc = shell_getc (1);
6067 if (ch == peekc && (ch == '&' || ch == '|' || ch == ';')) /* two-character tokens */
6068 {
6069 RESIZE_MALLOCED_BUFFER (ret, retind, 1, retsize, 64);
6070 ret[retind++] = peekc;
6071 /*itrace("parse_comsub:%d: set lex_reswordok = 1, ch = `%c'", line_number, ch);*/
6072 tflags |= LEX_RESWDOK;
6073 lex_rwlen = 0;
6074 continue;
6075 }
6076 else if (ch == '\n' || COMSUB_META(ch))
6077 {
6078 shell_ungetc (peekc);
6079 /*itrace("parse_comsub:%d: set lex_reswordok = 1, ch = `%c'", line_number, ch);*/
6080 tflags |= LEX_RESWDOK;
6081 lex_rwlen = 0;
6082 continue;
6083 }
6084 else if (ch == EOF)
6085 goto eof_error;
6086 else
6087 {
6088 /* `unget' the character we just added and fall through */
6089 retind--;
6090 shell_ungetc (peekc);
6091 }
6092 }
6093
6094 /* If we can read a reserved word, try to read one. */
6095 if (tflags & LEX_RESWDOK)
6096 {
6097 if MBTEST(islower (ch))
6098 {
6099 /* Add this character. */
6100 RESIZE_MALLOCED_BUFFER (ret, retind, 1, retsize, 64);
6101 ret[retind++] = ch;
6102 lex_rwlen++;
6103 continue;
6104 }
6105 else if MBTEST(lex_rwlen == 4 && shellbreak (ch))
6106 {
6107 if (STREQN (ret + retind - 4, "case", 4))
6108 {
6109 tflags |= LEX_INCASE;
6110 /*itrace("parse_comsub:%d: found `case', lex_incase -> 1 lex_reswdok -> 0", line_number);*/
6111 }
6112 else if (STREQN (ret + retind - 4, "esac", 4))
6113 {
6114 tflags &= ~LEX_INCASE;
6115 /*itrace("parse_comsub:%d: found `esac', lex_incase -> 0 lex_reswdok -> 0", line_number);*/
6116 }
6117 tflags &= ~LEX_RESWDOK;
6118 }
6119 else if MBTEST((tflags & LEX_CKCOMMENT) && ch == '#' && (lex_rwlen == 0 || ((tflags & LEX_INWORD) && lex_wlen == 0)))
6120 ; /* don't modify LEX_RESWDOK if we're starting a comment */
6121 /* Allow `do' followed by space, tab, or newline to preserve the
6122 RESWDOK flag, but reset the reserved word length counter so we
6123 can read another one. */
6124 else if MBTEST(((tflags & LEX_INCASE) == 0) &&
6125 (isblank(ch) || ch == '\n') &&
6126 lex_rwlen == 2 &&
6127 STREQN (ret + retind - 2, "do", 2))
6128 {
6129 /*itrace("parse_comsub:%d: lex_incase == 1 found `%c', found \"do\"", line_number, ch);*/
6130 lex_rwlen = 0;
6131 }
6132 else if MBTEST((tflags & LEX_INCASE) && ch != '\n')
6133 /* If we can read a reserved word and we're in case, we're at the
6134 point where we can read a new pattern list or an esac. We
6135 handle the esac case above. If we read a newline, we want to
6136 leave LEX_RESWDOK alone. If we read anything else, we want to
6137 turn off LEX_RESWDOK, since we're going to read a pattern list. */
6138 {
6139 tflags &= ~LEX_RESWDOK;
6140 /*itrace("parse_comsub:%d: lex_incase == 1 found `%c', lex_reswordok -> 0", line_number, ch);*/
6141 }
6142 else if MBTEST(shellbreak (ch) == 0)
6143 {
6144 tflags &= ~LEX_RESWDOK;
6145 /*itrace("parse_comsub:%d: found `%c', lex_reswordok -> 0", line_number, ch);*/
6146 }
6147 #if 0
6148 /* If we find a space or tab but have read something and it's not
6149 `do', turn off the reserved-word-ok flag */
6150 else if MBTEST(isblank (ch) && lex_rwlen > 0)
6151 {
6152 tflags &= ~LEX_RESWDOK;
6153 /*itrace("parse_comsub:%d: found `%c', lex_reswordok -> 0", line_number, ch);*/
6154 }
6155 #endif
6156 }
6157
6158 /* Might be the start of a here-doc delimiter */
6159 if MBTEST((tflags & LEX_INCOMMENT) == 0 && (tflags & LEX_CKCASE) && ch == '<')
6160 {
6161 /* Add this character. */
6162 RESIZE_MALLOCED_BUFFER (ret, retind, 1, retsize, 64);
6163 ret[retind++] = ch;
6164 peekc = shell_getc (1);
6165 if (peekc == EOF)
6166 goto eof_error;
6167 if (peekc == ch)
6168 {
6169 RESIZE_MALLOCED_BUFFER (ret, retind, 1, retsize, 64);
6170 ret[retind++] = peekc;
6171 peekc = shell_getc (1);
6172 if (peekc == EOF)
6173 goto eof_error;
6174 if (peekc == '-')
6175 {
6176 RESIZE_MALLOCED_BUFFER (ret, retind, 1, retsize, 64);
6177 ret[retind++] = peekc;
6178 tflags |= LEX_STRIPDOC;
6179 }
6180 else
6181 shell_ungetc (peekc);
6182 if (peekc != '<')
6183 {
6184 tflags |= LEX_HEREDELIM;
6185 lex_firstind = -1;
6186 }
6187 continue;
6188 }
6189 else
6190 ch = peekc; /* fall through and continue XXX */
6191 }
6192 else if MBTEST((tflags & LEX_CKCOMMENT) && (tflags & LEX_INCOMMENT) == 0 && ch == '#' && (((tflags & LEX_RESWDOK) && lex_rwlen == 0) || ((tflags & LEX_INWORD) && lex_wlen == 0)))
6193 {
6194 /*itrace("parse_comsub:%d: lex_incomment -> 1 (%d)", line_number, __LINE__);*/
6195 tflags |= LEX_INCOMMENT;
6196 }
6197
6198 if MBTEST(ch == CTLESC || ch == CTLNUL) /* special shell escapes */
6199 {
6200 RESIZE_MALLOCED_BUFFER (ret, retind, 2, retsize, 64);
6201 ret[retind++] = CTLESC;
6202 ret[retind++] = ch;
6203 continue;
6204 }
6205 #if 0
6206 else if MBTEST((tflags & LEX_INCASE) && ch == close && close == ')')
6207 tflags &= ~LEX_INCASE; /* XXX */
6208 #endif
6209 else if MBTEST(ch == close && (tflags & LEX_INCASE) == 0) /* ending delimiter */
6210 {
6211 count--;
6212 /*itrace("parse_comsub:%d: found close: count = %d", line_number, count);*/
6213 }
6214 else if MBTEST(((flags & P_FIRSTCLOSE) == 0) && (tflags & LEX_INCASE) == 0 && ch == open) /* nested begin */
6215 {
6216 count++;
6217 /*itrace("parse_comsub:%d: found open: count = %d", line_number, count);*/
6218 }
6219
6220 /* Add this character. */
6221 RESIZE_MALLOCED_BUFFER (ret, retind, 1, retsize, 64);
6222 ret[retind++] = ch;
6223
6224 /* If we just read the ending character, don't bother continuing. */
6225 if (count == 0)
6226 break;
6227
6228 if MBTEST(ch == '\\') /* backslashes */
6229 tflags |= LEX_PASSNEXT;
6230
6231 if MBTEST(shellquote (ch))
6232 {
6233 /* '', ``, or "" inside $(...). */
6234 push_delimiter (dstack, ch);
6235 if MBTEST((tflags & LEX_WASDOL) && ch == '\'') /* $'...' inside group */
6236 nestret = parse_matched_pair (ch, ch, ch, &nestlen, P_ALLOWESC|rflags);
6237 else
6238 nestret = parse_matched_pair (ch, ch, ch, &nestlen, rflags);
6239 pop_delimiter (dstack);
6240 CHECK_NESTRET_ERROR ();
6241
6242 if MBTEST((tflags & LEX_WASDOL) && ch == '\'' && (extended_quote || (rflags & P_DQUOTE) == 0))
6243 {
6244 /* Translate $'...' here. */
6245 ttrans = ansiexpand (nestret, 0, nestlen - 1, &ttranslen);
6246 xfree (nestret);
6247
6248 if ((rflags & P_DQUOTE) == 0)
6249 {
6250 nestret = sh_single_quote (ttrans);
6251 free (ttrans);
6252 nestlen = strlen (nestret);
6253 }
6254 else
6255 {
6256 nestret = ttrans;
6257 nestlen = ttranslen;
6258 }
6259 retind -= 2; /* back up before the $' */
6260 }
6261 else if MBTEST((tflags & LEX_WASDOL) && ch == '"' && (extended_quote || (rflags & P_DQUOTE) == 0))
6262 {
6263 /* Locale expand $"..." here. */
6264 ttrans = localeexpand (nestret, 0, nestlen - 1, start_lineno, &ttranslen);
6265 xfree (nestret);
6266
6267 nestret = sh_mkdoublequoted (ttrans, ttranslen, 0);
6268 free (ttrans);
6269 nestlen = ttranslen + 2;
6270 retind -= 2; /* back up before the $" */
6271 }
6272
6273 APPEND_NESTRET ();
6274 FREE (nestret);
6275 }
6276 else if MBTEST((tflags & LEX_WASDOL) && (ch == '(' || ch == '{' || ch == '[')) /* ) } ] */
6277 /* check for $(), $[], or ${} inside command substitution. */
6278 {
6279 if ((tflags & LEX_INCASE) == 0 && open == ch) /* undo previous increment */
6280 count--;
6281 if (ch == '(') /* ) */
6282 nestret = parse_comsub (0, '(', ')', &nestlen, (rflags|P_COMMAND) & ~P_DQUOTE);
6283 else if (ch == '{') /* } */
6284 nestret = parse_matched_pair (0, '{', '}', &nestlen, P_FIRSTCLOSE|P_DOLBRACE|rflags);
6285 else if (ch == '[') /* ] */
6286 nestret = parse_matched_pair (0, '[', ']', &nestlen, rflags);
6287
6288 CHECK_NESTRET_ERROR ();
6289 APPEND_NESTRET ();
6290
6291 FREE (nestret);
6292 }
6293 if MBTEST(ch == '$')
6294 tflags |= LEX_WASDOL;
6295 else
6296 tflags &= ~LEX_WASDOL;
6297 }
6298
6299 FREE (heredelim);
6300 ret[retind] = '\0';
6301 if (lenp)
6302 *lenp = retind;
6303 /*itrace("parse_comsub:%d: returning `%s'", line_number, ret);*/
6304 return ret;
6305 }
6306
6307 /* Recursively call the parser to parse a $(...) command substitution. */
6308 char *
6309 xparse_dolparen (base, string, indp, flags)
6310 char *base;
6311 char *string;
6312 int *indp;
6313 int flags;
6314 {
6315 sh_parser_state_t ps;
6316 sh_input_line_state_t ls;
6317 int orig_ind, nc, sflags, orig_eof_token;
6318 char *ret, *s, *ep, *ostring;
6319
6320 /*yydebug = 1;*/
6321 orig_ind = *indp;
6322 ostring = string;
6323
6324 /*itrace("xparse_dolparen: size = %d shell_input_line = `%s'", shell_input_line_size, shell_input_line);*/
6325 sflags = SEVAL_NONINT|SEVAL_NOHIST|SEVAL_NOFREE;
6326 if (flags & SX_NOLONGJMP)
6327 sflags |= SEVAL_NOLONGJMP;
6328 save_parser_state (&ps);
6329 save_input_line_state (&ls);
6330 orig_eof_token = shell_eof_token;
6331
6332 /*(*/
6333 parser_state |= PST_CMDSUBST|PST_EOFTOKEN; /* allow instant ')' */ /*(*/
6334 shell_eof_token = ')';
6335 parse_string (string, "command substitution", sflags, &ep);
6336
6337 shell_eof_token = orig_eof_token;
6338 restore_parser_state (&ps);
6339 reset_parser ();
6340 /* reset_parser clears shell_input_line and associated variables */
6341 restore_input_line_state (&ls);
6342 if (interactive)
6343 token_to_read = 0;
6344
6345 /* Need to find how many characters parse_and_execute consumed, update
6346 *indp, if flags != 0, copy the portion of the string parsed into RET
6347 and return it. If flags & 1 (EX_NOALLOC) we can return NULL. */
6348
6349 /*(*/
6350 if (ep[-1] != ')')
6351 {
6352 #if DEBUG
6353 if (ep[-1] != '\n')
6354 itrace("xparse_dolparen:%d: ep[-1] != RPAREN (%d), ep = `%s'", line_number, ep[-1], ep);
6355 #endif
6356 while (ep > ostring && ep[-1] == '\n') ep--;
6357 }
6358
6359 nc = ep - ostring;
6360 *indp = ep - base - 1;
6361
6362 /*(*/
6363 #if DEBUG
6364 if (base[*indp] != ')')
6365 itrace("xparse_dolparen:%d: base[%d] != RPAREN (%d), base = `%s'", line_number, *indp, base[*indp], base);
6366 #endif
6367
6368 if (flags & SX_NOALLOC)
6369 return (char *)NULL;
6370
6371 if (nc == 0)
6372 {
6373 ret = xmalloc (1);
6374 ret[0] = '\0';
6375 }
6376 else
6377 ret = substring (ostring, 0, nc - 1);
6378
6379 return ret;
6380 }
6381
6382 #if defined (DPAREN_ARITHMETIC) || defined (ARITH_FOR_COMMAND)
6383 /* Parse a double-paren construct. It can be either an arithmetic
6384 command, an arithmetic `for' command, or a nested subshell. Returns
6385 the parsed token, -1 on error, or -2 if we didn't do anything and
6386 should just go on. */
6387 static int
6388 parse_dparen (c)
6389 int c;
6390 {
6391 int cmdtyp, sline;
6392 char *wval;
6393 WORD_DESC *wd;
6394
6395 #if defined (ARITH_FOR_COMMAND)
6396 if (last_read_token == FOR)
6397 {
6398 arith_for_lineno = line_number;
6399 cmdtyp = parse_arith_cmd (&wval, 0);
6400 if (cmdtyp == 1)
6401 {
6402 wd = alloc_word_desc ();
6403 wd->word = wval;
6404 yylval.word_list = make_word_list (wd, (WORD_LIST *)NULL);
6405 return (ARITH_FOR_EXPRS);
6406 }
6407 else
6408 return -1; /* ERROR */
6409 }
6410 #endif
6411
6412 #if defined (DPAREN_ARITHMETIC)
6413 if (reserved_word_acceptable (last_read_token))
6414 {
6415 sline = line_number;
6416
6417 cmdtyp = parse_arith_cmd (&wval, 0);
6418 if (cmdtyp == 1) /* arithmetic command */
6419 {
6420 wd = alloc_word_desc ();
6421 wd->word = wval;
6422 wd->flags = W_QUOTED|W_NOSPLIT|W_NOGLOB|W_DQUOTE;
6423 yylval.word_list = make_word_list (wd, (WORD_LIST *)NULL);
6424 return (ARITH_CMD);
6425 }
6426 else if (cmdtyp == 0) /* nested subshell */
6427 {
6428 push_string (wval, 0, (alias_t *)NULL);
6429 pushed_string_list->flags = PSH_DPAREN;
6430 if ((parser_state & PST_CASEPAT) == 0)
6431 parser_state |= PST_SUBSHELL;
6432 return (c);
6433 }
6434 else /* ERROR */
6435 return -1;
6436 }
6437 #endif
6438
6439 return -2; /* XXX */
6440 }
6441
6442 /* We've seen a `(('. Look for the matching `))'. If we get it, return 1.
6443 If not, assume it's a nested subshell for backwards compatibility and
6444 return 0. In any case, put the characters we've consumed into a locally-
6445 allocated buffer and make *ep point to that buffer. Return -1 on an
6446 error, for example EOF. */
6447 static int
6448 parse_arith_cmd (ep, adddq)
6449 char **ep;
6450 int adddq;
6451 {
6452 int exp_lineno, rval, c;
6453 char *ttok, *tokstr;
6454 int ttoklen;
6455
6456 exp_lineno = line_number;
6457 ttok = parse_matched_pair (0, '(', ')', &ttoklen, 0);
6458 rval = 1;
6459 if (ttok == &matched_pair_error)
6460 return -1;
6461 /* Check that the next character is the closing right paren. If
6462 not, this is a syntax error. ( */
6463 c = shell_getc (0);
6464 if MBTEST(c != ')')
6465 rval = 0;
6466
6467 tokstr = (char *)xmalloc (ttoklen + 4);
6468
6469 /* if ADDDQ != 0 then (( ... )) -> "..." */
6470 if (rval == 1 && adddq) /* arith cmd, add double quotes */
6471 {
6472 tokstr[0] = '"';
6473 strncpy (tokstr + 1, ttok, ttoklen - 1);
6474 tokstr[ttoklen] = '"';
6475 tokstr[ttoklen+1] = '\0';
6476 }
6477 else if (rval == 1) /* arith cmd, don't add double quotes */
6478 {
6479 strncpy (tokstr, ttok, ttoklen - 1);
6480 tokstr[ttoklen-1] = '\0';
6481 }
6482 else /* nested subshell */
6483 {
6484 tokstr[0] = '(';
6485 strncpy (tokstr + 1, ttok, ttoklen - 1);
6486 tokstr[ttoklen] = ')';
6487 tokstr[ttoklen+1] = c;
6488 tokstr[ttoklen+2] = '\0';
6489 }
6490
6491 *ep = tokstr;
6492 FREE (ttok);
6493 return rval;
6494 }
6495 #endif /* DPAREN_ARITHMETIC || ARITH_FOR_COMMAND */
6496
6497 #if defined (COND_COMMAND)
6498 static void
6499 cond_error ()
6500 {
6501 char *etext;
6502
6503 if (EOF_Reached && cond_token != COND_ERROR) /* [[ */
6504 parser_error (cond_lineno, _("unexpected EOF while looking for `]]'"));
6505 else if (cond_token != COND_ERROR)
6506 {
6507 if (etext = error_token_from_token (cond_token))
6508 {
6509 parser_error (cond_lineno, _("syntax error in conditional expression: unexpected token `%s'"), etext);
6510 free (etext);
6511 }
6512 else
6513 parser_error (cond_lineno, _("syntax error in conditional expression"));
6514 }
6515 }
6516
6517 static COND_COM *
6518 cond_expr ()
6519 {
6520 return (cond_or ());
6521 }
6522
6523 static COND_COM *
6524 cond_or ()
6525 {
6526 COND_COM *l, *r;
6527
6528 l = cond_and ();
6529 if (cond_token == OR_OR)
6530 {
6531 r = cond_or ();
6532 l = make_cond_node (COND_OR, (WORD_DESC *)NULL, l, r);
6533 }
6534 return l;
6535 }
6536
6537 static COND_COM *
6538 cond_and ()
6539 {
6540 COND_COM *l, *r;
6541
6542 l = cond_term ();
6543 if (cond_token == AND_AND)
6544 {
6545 r = cond_and ();
6546 l = make_cond_node (COND_AND, (WORD_DESC *)NULL, l, r);
6547 }
6548 return l;
6549 }
6550
6551 static int
6552 cond_skip_newlines ()
6553 {
6554 while ((cond_token = read_token (READ)) == '\n')
6555 {
6556 if (SHOULD_PROMPT ())
6557 prompt_again ();
6558 }
6559 return (cond_token);
6560 }
6561
6562 #define COND_RETURN_ERROR() \
6563 do { cond_token = COND_ERROR; return ((COND_COM *)NULL); } while (0)
6564
6565 static COND_COM *
6566 cond_term ()
6567 {
6568 WORD_DESC *op;
6569 COND_COM *term, *tleft, *tright;
6570 int tok, lineno;
6571 char *etext;
6572
6573 /* Read a token. It can be a left paren, a `!', a unary operator, or a
6574 word that should be the first argument of a binary operator. Start by
6575 skipping newlines, since this is a compound command. */
6576 tok = cond_skip_newlines ();
6577 lineno = line_number;
6578 if (tok == COND_END)
6579 {
6580 COND_RETURN_ERROR ();
6581 }
6582 else if (tok == '(')
6583 {
6584 term = cond_expr ();
6585 if (cond_token != ')')
6586 {
6587 if (term)
6588 dispose_cond_node (term); /* ( */
6589 if (etext = error_token_from_token (cond_token))
6590 {
6591 parser_error (lineno, _("unexpected token `%s', expected `)'"), etext);
6592 free (etext);
6593 }
6594 else
6595 parser_error (lineno, _("expected `)'"));
6596 COND_RETURN_ERROR ();
6597 }
6598 term = make_cond_node (COND_EXPR, (WORD_DESC *)NULL, term, (COND_COM *)NULL);
6599 (void)cond_skip_newlines ();
6600 }
6601 else if (tok == BANG || (tok == WORD && (yylval.word->word[0] == '!' && yylval.word->word[1] == '\0')))
6602 {
6603 if (tok == WORD)
6604 dispose_word (yylval.word); /* not needed */
6605 term = cond_term ();
6606 if (term)
6607 term->flags |= CMD_INVERT_RETURN;
6608 }
6609 else if (tok == WORD && yylval.word->word[0] == '-' && yylval.word->word[2] == 0 && test_unop (yylval.word->word))
6610 {
6611 op = yylval.word;
6612 tok = read_token (READ);
6613 if (tok == WORD)
6614 {
6615 tleft = make_cond_node (COND_TERM, yylval.word, (COND_COM *)NULL, (COND_COM *)NULL);
6616 term = make_cond_node (COND_UNARY, op, tleft, (COND_COM *)NULL);
6617 }
6618 else
6619 {
6620 dispose_word (op);
6621 if (etext = error_token_from_token (tok))
6622 {
6623 parser_error (line_number, _("unexpected argument `%s' to conditional unary operator"), etext);
6624 free (etext);
6625 }
6626 else
6627 parser_error (line_number, _("unexpected argument to conditional unary operator"));
6628 COND_RETURN_ERROR ();
6629 }
6630
6631 (void)cond_skip_newlines ();
6632 }
6633 else if (tok == WORD) /* left argument to binary operator */
6634 {
6635 /* lhs */
6636 tleft = make_cond_node (COND_TERM, yylval.word, (COND_COM *)NULL, (COND_COM *)NULL);
6637
6638 /* binop */
6639 tok = read_token (READ);
6640 if (tok == WORD && test_binop (yylval.word->word))
6641 {
6642 op = yylval.word;
6643 if (op->word[0] == '=' && (op->word[1] == '\0' || (op->word[1] == '=' && op->word[2] == '\0')))
6644 parser_state |= PST_EXTPAT;
6645 else if (op->word[0] == '!' && op->word[1] == '=' && op->word[2] == '\0')
6646 parser_state |= PST_EXTPAT;
6647 }
6648 #if defined (COND_REGEXP)
6649 else if (tok == WORD && STREQ (yylval.word->word, "=~"))
6650 {
6651 op = yylval.word;
6652 parser_state |= PST_REGEXP;
6653 }
6654 #endif
6655 else if (tok == '<' || tok == '>')
6656 op = make_word_from_token (tok); /* ( */
6657 /* There should be a check before blindly accepting the `)' that we have
6658 seen the opening `('. */
6659 else if (tok == COND_END || tok == AND_AND || tok == OR_OR || tok == ')')
6660 {
6661 /* Special case. [[ x ]] is equivalent to [[ -n x ]], just like
6662 the test command. Similarly for [[ x && expr ]] or
6663 [[ x || expr ]] or [[ (x) ]]. */
6664 op = make_word ("-n");
6665 term = make_cond_node (COND_UNARY, op, tleft, (COND_COM *)NULL);
6666 cond_token = tok;
6667 return (term);
6668 }
6669 else
6670 {
6671 if (etext = error_token_from_token (tok))
6672 {
6673 parser_error (line_number, _("unexpected token `%s', conditional binary operator expected"), etext);
6674 free (etext);
6675 }
6676 else
6677 parser_error (line_number, _("conditional binary operator expected"));
6678 dispose_cond_node (tleft);
6679 COND_RETURN_ERROR ();
6680 }
6681
6682 /* rhs */
6683 if (parser_state & PST_EXTPAT)
6684 extended_glob = 1;
6685 tok = read_token (READ);
6686 if (parser_state & PST_EXTPAT)
6687 extended_glob = global_extglob;
6688 parser_state &= ~(PST_REGEXP|PST_EXTPAT);
6689
6690 if (tok == WORD)
6691 {
6692 tright = make_cond_node (COND_TERM, yylval.word, (COND_COM *)NULL, (COND_COM *)NULL);
6693 term = make_cond_node (COND_BINARY, op, tleft, tright);
6694 }
6695 else
6696 {
6697 if (etext = error_token_from_token (tok))
6698 {
6699 parser_error (line_number, _("unexpected argument `%s' to conditional binary operator"), etext);
6700 free (etext);
6701 }
6702 else
6703 parser_error (line_number, _("unexpected argument to conditional binary operator"));
6704 dispose_cond_node (tleft);
6705 dispose_word (op);
6706 COND_RETURN_ERROR ();
6707 }
6708
6709 (void)cond_skip_newlines ();
6710 }
6711 else
6712 {
6713 if (tok < 256)
6714 parser_error (line_number, _("unexpected token `%c' in conditional command"), tok);
6715 else if (etext = error_token_from_token (tok))
6716 {
6717 parser_error (line_number, _("unexpected token `%s' in conditional command"), etext);
6718 free (etext);
6719 }
6720 else
6721 parser_error (line_number, _("unexpected token %d in conditional command"), tok);
6722 COND_RETURN_ERROR ();
6723 }
6724 return (term);
6725 }
6726
6727 /* This is kind of bogus -- we slip a mini recursive-descent parser in
6728 here to handle the conditional statement syntax. */
6729 static COMMAND *
6730 parse_cond_command ()
6731 {
6732 COND_COM *cexp;
6733
6734 global_extglob = extended_glob;
6735 cexp = cond_expr ();
6736 return (make_cond_command (cexp));
6737 }
6738 #endif
6739
6740 #if defined (ARRAY_VARS)
6741 /* When this is called, it's guaranteed that we don't care about anything
6742 in t beyond i. We do save and restore the chars, though. */
6743 static int
6744 token_is_assignment (t, i)
6745 char *t;
6746 int i;
6747 {
6748 unsigned char c, c1;
6749 int r;
6750
6751 c = t[i]; c1 = t[i+1];
6752 t[i] = '='; t[i+1] = '\0';
6753 r = assignment (t, (parser_state & PST_COMPASSIGN) != 0);
6754 t[i] = c; t[i+1] = c1;
6755 return r;
6756 }
6757
6758 /* XXX - possible changes here for `+=' */
6759 static int
6760 token_is_ident (t, i)
6761 char *t;
6762 int i;
6763 {
6764 unsigned char c;
6765 int r;
6766
6767 c = t[i];
6768 t[i] = '\0';
6769 r = legal_identifier (t);
6770 t[i] = c;
6771 return r;
6772 }
6773 #endif
6774
6775 static int
6776 read_token_word (character)
6777 int character;
6778 {
6779 /* The value for YYLVAL when a WORD is read. */
6780 WORD_DESC *the_word;
6781
6782 /* Index into the token that we are building. */
6783 int token_index;
6784
6785 /* ALL_DIGITS becomes zero when we see a non-digit. */
6786 int all_digit_token;
6787
6788 /* DOLLAR_PRESENT becomes non-zero if we see a `$'. */
6789 int dollar_present;
6790
6791 /* COMPOUND_ASSIGNMENT becomes non-zero if we are parsing a compound
6792 assignment. */
6793 int compound_assignment;
6794
6795 /* QUOTED becomes non-zero if we see one of ("), ('), (`), or (\). */
6796 int quoted;
6797
6798 /* Non-zero means to ignore the value of the next character, and just
6799 to add it no matter what. */
6800 int pass_next_character;
6801
6802 /* The current delimiting character. */
6803 int cd;
6804 int result, peek_char;
6805 char *ttok, *ttrans;
6806 int ttoklen, ttranslen;
6807 intmax_t lvalue;
6808
6809 if (token_buffer_size < TOKEN_DEFAULT_INITIAL_SIZE)
6810 token = (char *)xrealloc (token, token_buffer_size = TOKEN_DEFAULT_INITIAL_SIZE);
6811
6812 token_index = 0;
6813 all_digit_token = DIGIT (character);
6814 dollar_present = quoted = pass_next_character = compound_assignment = 0;
6815
6816 for (;;)
6817 {
6818 if (character == EOF)
6819 goto got_token;
6820
6821 if (pass_next_character)
6822 {
6823 pass_next_character = 0;
6824 goto got_escaped_character;
6825 }
6826
6827 cd = current_delimiter (dstack);
6828
6829 /* Handle backslashes. Quote lots of things when not inside of
6830 double-quotes, quote some things inside of double-quotes. */
6831 if MBTEST(character == '\\')
6832 {
6833 peek_char = shell_getc (0);
6834
6835 /* Backslash-newline is ignored in all cases except
6836 when quoted with single quotes. */
6837 if (peek_char == '\n')
6838 {
6839 character = '\n';
6840 goto next_character;
6841 }
6842 else
6843 {
6844 shell_ungetc (peek_char);
6845
6846 /* If the next character is to be quoted, note it now. */
6847 if (cd == 0 || cd == '`' ||
6848 (cd == '"' && peek_char >= 0 && (sh_syntaxtab[peek_char] & CBSDQUOTE)))
6849 pass_next_character++;
6850
6851 quoted = 1;
6852 goto got_character;
6853 }
6854 }
6855
6856 /* Parse a matched pair of quote characters. */
6857 if MBTEST(shellquote (character))
6858 {
6859 push_delimiter (dstack, character);
6860 ttok = parse_matched_pair (character, character, character, &ttoklen, (character == '`') ? P_COMMAND : 0);
6861 pop_delimiter (dstack);
6862 if (ttok == &matched_pair_error)
6863 return -1; /* Bail immediately. */
6864 RESIZE_MALLOCED_BUFFER (token, token_index, ttoklen + 2,
6865 token_buffer_size, TOKEN_DEFAULT_GROW_SIZE);
6866 token[token_index++] = character;
6867 strcpy (token + token_index, ttok);
6868 token_index += ttoklen;
6869 all_digit_token = 0;
6870 quoted = 1;
6871 dollar_present |= (character == '"' && strchr (ttok, '$') != 0);
6872 FREE (ttok);
6873 goto next_character;
6874 }
6875
6876 #ifdef COND_REGEXP
6877 /* When parsing a regexp as a single word inside a conditional command,
6878 we need to special-case characters special to both the shell and
6879 regular expressions. Right now, that is only '(' and '|'. */ /*)*/
6880 if MBTEST((parser_state & PST_REGEXP) && (character == '(' || character == '|')) /*)*/
6881 {
6882 if (character == '|')
6883 goto got_character;
6884
6885 push_delimiter (dstack, character);
6886 ttok = parse_matched_pair (cd, '(', ')', &ttoklen, 0);
6887 pop_delimiter (dstack);
6888 if (ttok == &matched_pair_error)
6889 return -1; /* Bail immediately. */
6890 RESIZE_MALLOCED_BUFFER (token, token_index, ttoklen + 2,
6891 token_buffer_size, TOKEN_DEFAULT_GROW_SIZE);
6892 token[token_index++] = character;
6893 strcpy (token + token_index, ttok);
6894 token_index += ttoklen;
6895 FREE (ttok);
6896 dollar_present = all_digit_token = 0;
6897 goto next_character;
6898 }
6899 #endif /* COND_REGEXP */
6900
6901 #ifdef EXTENDED_GLOB
6902 /* Parse a ksh-style extended pattern matching specification. */
6903 if MBTEST(extended_glob && PATTERN_CHAR (character))
6904 {
6905 peek_char = shell_getc (1);
6906 if MBTEST(peek_char == '(') /* ) */
6907 {
6908 push_delimiter (dstack, peek_char);
6909 ttok = parse_matched_pair (cd, '(', ')', &ttoklen, 0);
6910 pop_delimiter (dstack);
6911 if (ttok == &matched_pair_error)
6912 return -1; /* Bail immediately. */
6913 RESIZE_MALLOCED_BUFFER (token, token_index, ttoklen + 3,
6914 token_buffer_size,
6915 TOKEN_DEFAULT_GROW_SIZE);
6916 token[token_index++] = character;
6917 token[token_index++] = peek_char;
6918 strcpy (token + token_index, ttok);
6919 token_index += ttoklen;
6920 FREE (ttok);
6921 dollar_present = all_digit_token = 0;
6922 goto next_character;
6923 }
6924 else
6925 shell_ungetc (peek_char);
6926 }
6927 #endif /* EXTENDED_GLOB */
6928
6929 /* If the delimiter character is not single quote, parse some of
6930 the shell expansions that must be read as a single word. */
6931 if (shellexp (character))
6932 {
6933 peek_char = shell_getc (1);
6934 /* $(...), <(...), >(...), $((...)), ${...}, and $[...] constructs */
6935 if MBTEST(peek_char == '(' ||
6936 ((peek_char == '{' || peek_char == '[') && character == '$')) /* ) ] } */
6937 {
6938 if (peek_char == '{') /* } */
6939 ttok = parse_matched_pair (cd, '{', '}', &ttoklen, P_FIRSTCLOSE|P_DOLBRACE);
6940 else if (peek_char == '(') /* ) */
6941 {
6942 /* XXX - push and pop the `(' as a delimiter for use by
6943 the command-oriented-history code. This way newlines
6944 appearing in the $(...) string get added to the
6945 history literally rather than causing a possibly-
6946 incorrect `;' to be added. ) */
6947 push_delimiter (dstack, peek_char);
6948 ttok = parse_comsub (cd, '(', ')', &ttoklen, P_COMMAND);
6949 pop_delimiter (dstack);
6950 }
6951 else
6952 ttok = parse_matched_pair (cd, '[', ']', &ttoklen, 0);
6953 if (ttok == &matched_pair_error)
6954 return -1; /* Bail immediately. */
6955 RESIZE_MALLOCED_BUFFER (token, token_index, ttoklen + 3,
6956 token_buffer_size,
6957 TOKEN_DEFAULT_GROW_SIZE);
6958 token[token_index++] = character;
6959 token[token_index++] = peek_char;
6960 strcpy (token + token_index, ttok);
6961 token_index += ttoklen;
6962 FREE (ttok);
6963 dollar_present = 1;
6964 all_digit_token = 0;
6965 goto next_character;
6966 }
6967 /* This handles $'...' and $"..." new-style quoted strings. */
6968 else if MBTEST(character == '$' && (peek_char == '\'' || peek_char == '"'))
6969 {
6970 int first_line;
6971
6972 first_line = line_number;
6973 push_delimiter (dstack, peek_char);
6974 ttok = parse_matched_pair (peek_char, peek_char, peek_char,
6975 &ttoklen,
6976 (peek_char == '\'') ? P_ALLOWESC : 0);
6977 pop_delimiter (dstack);
6978 if (ttok == &matched_pair_error)
6979 return -1;
6980 if (peek_char == '\'')
6981 {
6982 ttrans = ansiexpand (ttok, 0, ttoklen - 1, &ttranslen);
6983 free (ttok);
6984
6985 /* Insert the single quotes and correctly quote any
6986 embedded single quotes (allowed because P_ALLOWESC was
6987 passed to parse_matched_pair). */
6988 ttok = sh_single_quote (ttrans);
6989 free (ttrans);
6990 ttranslen = strlen (ttok);
6991 ttrans = ttok;
6992 }
6993 else
6994 {
6995 /* Try to locale-expand the converted string. */
6996 ttrans = localeexpand (ttok, 0, ttoklen - 1, first_line, &ttranslen);
6997 free (ttok);
6998
6999 /* Add the double quotes back */
7000 ttok = sh_mkdoublequoted (ttrans, ttranslen, 0);
7001 free (ttrans);
7002 ttranslen += 2;
7003 ttrans = ttok;
7004 }
7005
7006 RESIZE_MALLOCED_BUFFER (token, token_index, ttranslen + 1,
7007 token_buffer_size,
7008 TOKEN_DEFAULT_GROW_SIZE);
7009 strcpy (token + token_index, ttrans);
7010 token_index += ttranslen;
7011 FREE (ttrans);
7012 quoted = 1;
7013 all_digit_token = 0;
7014 goto next_character;
7015 }
7016 /* This could eventually be extended to recognize all of the
7017 shell's single-character parameter expansions, and set flags.*/
7018 else if MBTEST(character == '$' && peek_char == '$')
7019 {
7020 RESIZE_MALLOCED_BUFFER (token, token_index, 3,
7021 token_buffer_size,
7022 TOKEN_DEFAULT_GROW_SIZE);
7023 token[token_index++] = '$';
7024 token[token_index++] = peek_char;
7025 dollar_present = 1;
7026 all_digit_token = 0;
7027 goto next_character;
7028 }
7029 else
7030 shell_ungetc (peek_char);
7031 }
7032
7033 #if defined (ARRAY_VARS)
7034 /* Identify possible array subscript assignment; match [...]. If
7035 parser_state&PST_COMPASSIGN, we need to parse [sub]=words treating
7036 `sub' as if it were enclosed in double quotes. */
7037 else if MBTEST(character == '[' && /* ] */
7038 ((token_index > 0 && assignment_acceptable (last_read_token) && token_is_ident (token, token_index)) ||
7039 (token_index == 0 && (parser_state&PST_COMPASSIGN))))
7040 {
7041 ttok = parse_matched_pair (cd, '[', ']', &ttoklen, P_ARRAYSUB);
7042 if (ttok == &matched_pair_error)
7043 return -1; /* Bail immediately. */
7044 RESIZE_MALLOCED_BUFFER (token, token_index, ttoklen + 2,
7045 token_buffer_size,
7046 TOKEN_DEFAULT_GROW_SIZE);
7047 token[token_index++] = character;
7048 strcpy (token + token_index, ttok);
7049 token_index += ttoklen;
7050 FREE (ttok);
7051 all_digit_token = 0;
7052 goto next_character;
7053 }
7054 /* Identify possible compound array variable assignment. */
7055 else if MBTEST(character == '=' && token_index > 0 && (assignment_acceptable (last_read_token) || (parser_state & PST_ASSIGNOK)) && token_is_assignment (token, token_index))
7056 {
7057 peek_char = shell_getc (1);
7058 if MBTEST(peek_char == '(') /* ) */
7059 {
7060 ttok = parse_compound_assignment (&ttoklen);
7061
7062 RESIZE_MALLOCED_BUFFER (token, token_index, ttoklen + 4,
7063 token_buffer_size,
7064 TOKEN_DEFAULT_GROW_SIZE);
7065
7066 token[token_index++] = '=';
7067 token[token_index++] = '(';
7068 if (ttok)
7069 {
7070 strcpy (token + token_index, ttok);
7071 token_index += ttoklen;
7072 }
7073 token[token_index++] = ')';
7074 FREE (ttok);
7075 all_digit_token = 0;
7076 compound_assignment = 1;
7077 #if 1
7078 goto next_character;
7079 #else
7080 goto got_token; /* ksh93 seems to do this */
7081 #endif
7082 }
7083 else
7084 shell_ungetc (peek_char);
7085 }
7086 #endif
7087
7088 /* When not parsing a multi-character word construct, shell meta-
7089 characters break words. */
7090 if MBTEST(shellbreak (character))
7091 {
7092 shell_ungetc (character);
7093 goto got_token;
7094 }
7095
7096 got_character:
7097
7098 if (character == CTLESC || character == CTLNUL)
7099 {
7100 RESIZE_MALLOCED_BUFFER (token, token_index, 2, token_buffer_size,
7101 TOKEN_DEFAULT_GROW_SIZE);
7102 token[token_index++] = CTLESC;
7103 }
7104 else
7105 got_escaped_character:
7106 RESIZE_MALLOCED_BUFFER (token, token_index, 1, token_buffer_size,
7107 TOKEN_DEFAULT_GROW_SIZE);
7108
7109 token[token_index++] = character;
7110
7111 all_digit_token &= DIGIT (character);
7112 dollar_present |= character == '$';
7113
7114 next_character:
7115 if (character == '\n' && SHOULD_PROMPT ())
7116 prompt_again ();
7117
7118 /* We want to remove quoted newlines (that is, a \<newline> pair)
7119 unless we are within single quotes or pass_next_character is
7120 set (the shell equivalent of literal-next). */
7121 cd = current_delimiter (dstack);
7122 character = shell_getc (cd != '\'' && pass_next_character == 0);
7123 } /* end for (;;) */
7124
7125 got_token:
7126
7127 /* Calls to RESIZE_MALLOCED_BUFFER ensure there is sufficient room. */
7128 token[token_index] = '\0';
7129
7130 /* Check to see what thing we should return. If the last_read_token
7131 is a `<', or a `&', or the character which ended this token is
7132 a '>' or '<', then, and ONLY then, is this input token a NUMBER.
7133 Otherwise, it is just a word, and should be returned as such. */
7134 if MBTEST(all_digit_token && (character == '<' || character == '>' ||
7135 last_read_token == LESS_AND ||
7136 last_read_token == GREATER_AND))
7137 {
7138 if (legal_number (token, &lvalue) && (int)lvalue == lvalue)
7139 {
7140 yylval.number = lvalue;
7141 return (NUMBER);
7142 }
7143 }
7144
7145 /* Check for special case tokens. */
7146 result = (last_shell_getc_is_singlebyte) ? special_case_tokens (token) : -1;
7147 if (result >= 0)
7148 return result;
7149
7150 #if defined (ALIAS)
7151 /* Posix.2 does not allow reserved words to be aliased, so check for all
7152 of them, including special cases, before expanding the current token
7153 as an alias. */
7154 if MBTEST(posixly_correct)
7155 CHECK_FOR_RESERVED_WORD (token);
7156
7157 /* Aliases are expanded iff EXPAND_ALIASES is non-zero, and quoting
7158 inhibits alias expansion. */
7159 if (expand_aliases && quoted == 0)
7160 {
7161 result = alias_expand_token (token);
7162 if (result == RE_READ_TOKEN)
7163 return (RE_READ_TOKEN);
7164 else if (result == NO_EXPANSION)
7165 parser_state &= ~PST_ALEXPNEXT;
7166 }
7167
7168 /* If not in Posix.2 mode, check for reserved words after alias
7169 expansion. */
7170 if MBTEST(posixly_correct == 0)
7171 #endif
7172 CHECK_FOR_RESERVED_WORD (token);
7173
7174 the_word = (WORD_DESC *)xmalloc (sizeof (WORD_DESC));
7175 the_word->word = (char *)xmalloc (1 + token_index);
7176 the_word->flags = 0;
7177 strcpy (the_word->word, token);
7178 if (dollar_present)
7179 the_word->flags |= W_HASDOLLAR;
7180 if (quoted)
7181 the_word->flags |= W_QUOTED; /*(*/
7182 if (compound_assignment && token[token_index-1] == ')')
7183 the_word->flags |= W_COMPASSIGN;
7184 /* A word is an assignment if it appears at the beginning of a
7185 simple command, or after another assignment word. This is
7186 context-dependent, so it cannot be handled in the grammar. */
7187 if (assignment (token, (parser_state & PST_COMPASSIGN) != 0))
7188 {
7189 the_word->flags |= W_ASSIGNMENT;
7190 /* Don't perform word splitting on assignment statements. */
7191 if (assignment_acceptable (last_read_token) || (parser_state & PST_COMPASSIGN) != 0)
7192 {
7193 the_word->flags |= W_NOSPLIT;
7194 if (parser_state & PST_COMPASSIGN)
7195 the_word->flags |= W_NOGLOB; /* XXX - W_NOBRACE? */
7196 }
7197 }
7198
7199 if (command_token_position (last_read_token))
7200 {
7201 struct builtin *b;
7202 b = builtin_address_internal (token, 0);
7203 if (b && (b->flags & ASSIGNMENT_BUILTIN))
7204 parser_state |= PST_ASSIGNOK;
7205 else if (STREQ (token, "eval") || STREQ (token, "let"))
7206 parser_state |= PST_ASSIGNOK;
7207 }
7208
7209 yylval.word = the_word;
7210
7211 if (token[0] == '{' && token[token_index-1] == '}' &&
7212 (character == '<' || character == '>'))
7213 {
7214 /* can use token; already copied to the_word */
7215 token[token_index-1] = '\0';
7216 #if defined (ARRAY_VARS)
7217 if (legal_identifier (token+1) || valid_array_reference (token+1))
7218 #else
7219 if (legal_identifier (token+1))
7220 #endif
7221 {
7222 strcpy (the_word->word, token+1);
7223 /*itrace("read_token_word: returning REDIR_WORD for %s", the_word->word);*/
7224 return (REDIR_WORD);
7225 }
7226 }
7227
7228 result = ((the_word->flags & (W_ASSIGNMENT|W_NOSPLIT)) == (W_ASSIGNMENT|W_NOSPLIT))
7229 ? ASSIGNMENT_WORD : WORD;
7230
7231 switch (last_read_token)
7232 {
7233 case FUNCTION:
7234 parser_state |= PST_ALLOWOPNBRC;
7235 function_dstart = line_number;
7236 break;
7237 case CASE:
7238 case SELECT:
7239 case FOR:
7240 if (word_top < MAX_CASE_NEST)
7241 word_top++;
7242 word_lineno[word_top] = line_number;
7243 break;
7244 }
7245
7246 return (result);
7247 }
7248
7249 /* Return 1 if TOKSYM is a token that after being read would allow
7250 a reserved word to be seen, else 0. */
7251 static int
7252 reserved_word_acceptable (toksym)
7253 int toksym;
7254 {
7255 switch (toksym)
7256 {
7257 case '\n':
7258 case ';':
7259 case '(':
7260 case ')':
7261 case '|':
7262 case '&':
7263 case '{':
7264 case '}': /* XXX */
7265 case AND_AND:
7266 case BANG:
7267 case BAR_AND:
7268 case DO:
7269 case DONE:
7270 case ELIF:
7271 case ELSE:
7272 case ESAC:
7273 case FI:
7274 case IF:
7275 case OR_OR:
7276 case SEMI_SEMI:
7277 case SEMI_AND:
7278 case SEMI_SEMI_AND:
7279 case THEN:
7280 case TIME:
7281 case TIMEOPT:
7282 case TIMEIGN:
7283 case COPROC:
7284 case UNTIL:
7285 case WHILE:
7286 case 0:
7287 return 1;
7288 default:
7289 #if defined (COPROCESS_SUPPORT)
7290 if (last_read_token == WORD && token_before_that == COPROC)
7291 return 1;
7292 #endif
7293 if (last_read_token == WORD && token_before_that == FUNCTION)
7294 return 1;
7295 return 0;
7296 }
7297 }
7298
7299 /* Return the index of TOKEN in the alist of reserved words, or -1 if
7300 TOKEN is not a shell reserved word. */
7301 int
7302 find_reserved_word (tokstr)
7303 char *tokstr;
7304 {
7305 int i;
7306 for (i = 0; word_token_alist[i].word; i++)
7307 if (STREQ (tokstr, word_token_alist[i].word))
7308 return i;
7309 return -1;
7310 }
7311
7312 /* An interface to let the rest of the shell (primarily the completion
7313 system) know what the parser is expecting. */
7314 int
7315 parser_in_command_position ()
7316 {
7317 return (command_token_position (last_read_token));
7318 }
7319
7320 #if 0
7321 #if defined (READLINE)
7322 /* Called after each time readline is called. This insures that whatever
7323 the new prompt string is gets propagated to readline's local prompt
7324 variable. */
7325 static void
7326 reset_readline_prompt ()
7327 {
7328 char *temp_prompt;
7329
7330 if (prompt_string_pointer)
7331 {
7332 temp_prompt = (*prompt_string_pointer)
7333 ? decode_prompt_string (*prompt_string_pointer)
7334 : (char *)NULL;
7335
7336 if (temp_prompt == 0)
7337 {
7338 temp_prompt = (char *)xmalloc (1);
7339 temp_prompt[0] = '\0';
7340 }
7341
7342 FREE (current_readline_prompt);
7343 current_readline_prompt = temp_prompt;
7344 }
7345 }
7346 #endif /* READLINE */
7347 #endif /* 0 */
7348
7349 #if defined (HISTORY)
7350 /* A list of tokens which can be followed by newlines, but not by
7351 semi-colons. When concatenating multiple lines of history, the
7352 newline separator for such tokens is replaced with a space. */
7353 static const int no_semi_successors[] = {
7354 '\n', '{', '(', ')', ';', '&', '|',
7355 CASE, DO, ELSE, IF, SEMI_SEMI, SEMI_AND, SEMI_SEMI_AND, THEN, UNTIL,
7356 WHILE, AND_AND, OR_OR, IN,
7357 0
7358 };
7359
7360 /* If we are not within a delimited expression, try to be smart
7361 about which separators can be semi-colons and which must be
7362 newlines. Returns the string that should be added into the
7363 history entry. LINE is the line we're about to add; it helps
7364 make some more intelligent decisions in certain cases. */
7365 char *
7366 history_delimiting_chars (line)
7367 const char *line;
7368 {
7369 static int last_was_heredoc = 0; /* was the last entry the start of a here document? */
7370 register int i;
7371
7372 if ((parser_state & PST_HEREDOC) == 0)
7373 last_was_heredoc = 0;
7374
7375 if (dstack.delimiter_depth != 0)
7376 return ("\n");
7377
7378 /* We look for current_command_line_count == 2 because we are looking to
7379 add the first line of the body of the here document (the second line
7380 of the command). We also keep LAST_WAS_HEREDOC as a private sentinel
7381 variable to note when we think we added the first line of a here doc
7382 (the one with a "<<" somewhere in it) */
7383 if (parser_state & PST_HEREDOC)
7384 {
7385 if (last_was_heredoc)
7386 {
7387 last_was_heredoc = 0;
7388 return "\n";
7389 }
7390 return (current_command_line_count == 2 ? "\n" : "");
7391 }
7392
7393 if (parser_state & PST_COMPASSIGN)
7394 return (" ");
7395
7396 /* First, handle some special cases. */
7397 /*(*/
7398 /* If we just read `()', assume it's a function definition, and don't
7399 add a semicolon. If the token before the `)' was not `(', and we're
7400 not in the midst of parsing a case statement, assume it's a
7401 parenthesized command and add the semicolon. */
7402 /*)(*/
7403 if (token_before_that == ')')
7404 {
7405 if (two_tokens_ago == '(') /*)*/ /* function def */
7406 return " ";
7407 /* This does not work for subshells inside case statement
7408 command lists. It's a suboptimal solution. */
7409 else if (parser_state & PST_CASESTMT) /* case statement pattern */
7410 return " ";
7411 else
7412 return "; "; /* (...) subshell */
7413 }
7414 else if (token_before_that == WORD && two_tokens_ago == FUNCTION)
7415 return " "; /* function def using `function name' without `()' */
7416
7417 /* If we're not in a here document, but we think we're about to parse one,
7418 and we would otherwise return a `;', return a newline to delimit the
7419 line with the here-doc delimiter */
7420 else if ((parser_state & PST_HEREDOC) == 0 && current_command_line_count > 1 && last_read_token == '\n' && strstr (line, "<<"))
7421 {
7422 last_was_heredoc = 1;
7423 return "\n";
7424 }
7425
7426 else if (token_before_that == WORD && two_tokens_ago == FOR)
7427 {
7428 /* Tricky. `for i\nin ...' should not have a semicolon, but
7429 `for i\ndo ...' should. We do what we can. */
7430 for (i = shell_input_line_index; whitespace (shell_input_line[i]); i++)
7431 ;
7432 if (shell_input_line[i] && shell_input_line[i] == 'i' && shell_input_line[i+1] == 'n')
7433 return " ";
7434 return ";";
7435 }
7436 else if (two_tokens_ago == CASE && token_before_that == WORD && (parser_state & PST_CASESTMT))
7437 return " ";
7438
7439 for (i = 0; no_semi_successors[i]; i++)
7440 {
7441 if (token_before_that == no_semi_successors[i])
7442 return (" ");
7443 }
7444
7445 return ("; ");
7446 }
7447 #endif /* HISTORY */
7448
7449 /* Issue a prompt, or prepare to issue a prompt when the next character
7450 is read. */
7451 static void
7452 prompt_again ()
7453 {
7454 char *temp_prompt;
7455
7456 if (interactive == 0 || expanding_alias ()) /* XXX */
7457 return;
7458
7459 ps1_prompt = get_string_value ("PS1");
7460 ps2_prompt = get_string_value ("PS2");
7461
7462 if (!prompt_string_pointer)
7463 prompt_string_pointer = &ps1_prompt;
7464
7465 temp_prompt = *prompt_string_pointer
7466 ? decode_prompt_string (*prompt_string_pointer)
7467 : (char *)NULL;
7468
7469 if (temp_prompt == 0)
7470 {
7471 temp_prompt = (char *)xmalloc (1);
7472 temp_prompt[0] = '\0';
7473 }
7474
7475 current_prompt_string = *prompt_string_pointer;
7476 prompt_string_pointer = &ps2_prompt;
7477
7478 #if defined (READLINE)
7479 if (!no_line_editing)
7480 {
7481 FREE (current_readline_prompt);
7482 current_readline_prompt = temp_prompt;
7483 }
7484 else
7485 #endif /* READLINE */
7486 {
7487 FREE (current_decoded_prompt);
7488 current_decoded_prompt = temp_prompt;
7489 }
7490 }
7491
7492 int
7493 get_current_prompt_level ()
7494 {
7495 return ((current_prompt_string && current_prompt_string == ps2_prompt) ? 2 : 1);
7496 }
7497
7498 void
7499 set_current_prompt_level (x)
7500 int x;
7501 {
7502 prompt_string_pointer = (x == 2) ? &ps2_prompt : &ps1_prompt;
7503 current_prompt_string = *prompt_string_pointer;
7504 }
7505
7506 static void
7507 print_prompt ()
7508 {
7509 fprintf (stderr, "%s", current_decoded_prompt);
7510 fflush (stderr);
7511 }
7512
7513 /* Return a string which will be printed as a prompt. The string
7514 may contain special characters which are decoded as follows:
7515
7516 \a bell (ascii 07)
7517 \d the date in Day Mon Date format
7518 \e escape (ascii 033)
7519 \h the hostname up to the first `.'
7520 \H the hostname
7521 \j the number of active jobs
7522 \l the basename of the shell's tty device name
7523 \n CRLF
7524 \r CR
7525 \s the name of the shell
7526 \t the time in 24-hour hh:mm:ss format
7527 \T the time in 12-hour hh:mm:ss format
7528 \@ the time in 12-hour hh:mm am/pm format
7529 \A the time in 24-hour hh:mm format
7530 \D{fmt} the result of passing FMT to strftime(3)
7531 \u your username
7532 \v the version of bash (e.g., 2.00)
7533 \V the release of bash, version + patchlevel (e.g., 2.00.0)
7534 \w the current working directory
7535 \W the last element of $PWD
7536 \! the history number of this command
7537 \# the command number of this command
7538 \$ a $ or a # if you are root
7539 \nnn character code nnn in octal
7540 \\ a backslash
7541 \[ begin a sequence of non-printing chars
7542 \] end a sequence of non-printing chars
7543 */
7544 #define PROMPT_GROWTH 48
7545 char *
7546 decode_prompt_string (string)
7547 char *string;
7548 {
7549 WORD_LIST *list;
7550 char *result, *t;
7551 struct dstack save_dstack;
7552 int last_exit_value, last_comsub_pid;
7553 #if defined (PROMPT_STRING_DECODE)
7554 int result_size, result_index;
7555 int c, n, i;
7556 char *temp, octal_string[4];
7557 struct tm *tm;
7558 time_t the_time;
7559 char timebuf[128];
7560 char *timefmt;
7561
7562 result = (char *)xmalloc (result_size = PROMPT_GROWTH);
7563 result[result_index = 0] = 0;
7564 temp = (char *)NULL;
7565
7566 while (c = *string++)
7567 {
7568 if (posixly_correct && c == '!')
7569 {
7570 if (*string == '!')
7571 {
7572 temp = savestring ("!");
7573 goto add_string;
7574 }
7575 else
7576 {
7577 #if !defined (HISTORY)
7578 temp = savestring ("1");
7579 #else /* HISTORY */
7580 temp = itos (history_number ());
7581 #endif /* HISTORY */
7582 string--; /* add_string increments string again. */
7583 goto add_string;
7584 }
7585 }
7586 if (c == '\\')
7587 {
7588 c = *string;
7589
7590 switch (c)
7591 {
7592 case '0':
7593 case '1':
7594 case '2':
7595 case '3':
7596 case '4':
7597 case '5':
7598 case '6':
7599 case '7':
7600 strncpy (octal_string, string, 3);
7601 octal_string[3] = '\0';
7602
7603 n = read_octal (octal_string);
7604 temp = (char *)xmalloc (3);
7605
7606 if (n == CTLESC || n == CTLNUL)
7607 {
7608 temp[0] = CTLESC;
7609 temp[1] = n;
7610 temp[2] = '\0';
7611 }
7612 else if (n == -1)
7613 {
7614 temp[0] = '\\';
7615 temp[1] = '\0';
7616 }
7617 else
7618 {
7619 temp[0] = n;
7620 temp[1] = '\0';
7621 }
7622
7623 for (c = 0; n != -1 && c < 3 && ISOCTAL (*string); c++)
7624 string++;
7625
7626 c = 0; /* tested at add_string: */
7627 goto add_string;
7628
7629 case 'd':
7630 case 't':
7631 case 'T':
7632 case '@':
7633 case 'A':
7634 /* Make the current time/date into a string. */
7635 (void) time (&the_time);
7636 #if defined (HAVE_TZSET)
7637 sv_tz ("TZ"); /* XXX -- just make sure */
7638 #endif
7639 tm = localtime (&the_time);
7640
7641 if (c == 'd')
7642 n = strftime (timebuf, sizeof (timebuf), "%a %b %d", tm);
7643 else if (c == 't')
7644 n = strftime (timebuf, sizeof (timebuf), "%H:%M:%S", tm);
7645 else if (c == 'T')
7646 n = strftime (timebuf, sizeof (timebuf), "%I:%M:%S", tm);
7647 else if (c == '@')
7648 n = strftime (timebuf, sizeof (timebuf), "%I:%M %p", tm);
7649 else if (c == 'A')
7650 n = strftime (timebuf, sizeof (timebuf), "%H:%M", tm);
7651
7652 if (n == 0)
7653 timebuf[0] = '\0';
7654 else
7655 timebuf[sizeof(timebuf) - 1] = '\0';
7656
7657 temp = savestring (timebuf);
7658 goto add_string;
7659
7660 case 'D': /* strftime format */
7661 if (string[1] != '{') /* } */
7662 goto not_escape;
7663
7664 (void) time (&the_time);
7665 tm = localtime (&the_time);
7666 string += 2; /* skip { */
7667 timefmt = xmalloc (strlen (string) + 3);
7668 for (t = timefmt; *string && *string != '}'; )
7669 *t++ = *string++;
7670 *t = '\0';
7671 c = *string; /* tested at add_string */
7672 if (timefmt[0] == '\0')
7673 {
7674 timefmt[0] = '%';
7675 timefmt[1] = 'X'; /* locale-specific current time */
7676 timefmt[2] = '\0';
7677 }
7678 n = strftime (timebuf, sizeof (timebuf), timefmt, tm);
7679 free (timefmt);
7680
7681 if (n == 0)
7682 timebuf[0] = '\0';
7683 else
7684 timebuf[sizeof(timebuf) - 1] = '\0';
7685
7686 if (promptvars || posixly_correct)
7687 /* Make sure that expand_prompt_string is called with a
7688 second argument of Q_DOUBLE_QUOTES if we use this
7689 function here. */
7690 temp = sh_backslash_quote_for_double_quotes (timebuf);
7691 else
7692 temp = savestring (timebuf);
7693 goto add_string;
7694
7695 case 'n':
7696 temp = (char *)xmalloc (3);
7697 temp[0] = no_line_editing ? '\n' : '\r';
7698 temp[1] = no_line_editing ? '\0' : '\n';
7699 temp[2] = '\0';
7700 goto add_string;
7701
7702 case 's':
7703 temp = base_pathname (shell_name);
7704 temp = savestring (temp);
7705 goto add_string;
7706
7707 case 'v':
7708 case 'V':
7709 temp = (char *)xmalloc (16);
7710 if (c == 'v')
7711 strcpy (temp, dist_version);
7712 else
7713 sprintf (temp, "%s.%d", dist_version, patch_level);
7714 goto add_string;
7715
7716 case 'w':
7717 case 'W':
7718 {
7719 /* Use the value of PWD because it is much more efficient. */
7720 char t_string[PATH_MAX];
7721 int tlen;
7722
7723 temp = get_string_value ("PWD");
7724
7725 if (temp == 0)
7726 {
7727 if (getcwd (t_string, sizeof(t_string)) == 0)
7728 {
7729 t_string[0] = '.';
7730 tlen = 1;
7731 }
7732 else
7733 tlen = strlen (t_string);
7734 }
7735 else
7736 {
7737 tlen = sizeof (t_string) - 1;
7738 strncpy (t_string, temp, tlen);
7739 }
7740 t_string[tlen] = '\0';
7741
7742 #if defined (MACOSX)
7743 /* Convert from "fs" format to "input" format */
7744 temp = fnx_fromfs (t_string, strlen (t_string));
7745 if (temp != t_string)
7746 strcpy (t_string, temp);
7747 #endif
7748
7749 #define ROOT_PATH(x) ((x)[0] == '/' && (x)[1] == 0)
7750 #define DOUBLE_SLASH_ROOT(x) ((x)[0] == '/' && (x)[1] == '/' && (x)[2] == 0)
7751 /* Abbreviate \W as ~ if $PWD == $HOME */
7752 if (c == 'W' && (((t = get_string_value ("HOME")) == 0) || STREQ (t, t_string) == 0))
7753 {
7754 if (ROOT_PATH (t_string) == 0 && DOUBLE_SLASH_ROOT (t_string) == 0)
7755 {
7756 t = strrchr (t_string, '/');
7757 if (t)
7758 memmove (t_string, t + 1, strlen (t)); /* strlen(t) to copy NULL */
7759 }
7760 }
7761 #undef ROOT_PATH
7762 #undef DOUBLE_SLASH_ROOT
7763 else
7764 {
7765 /* polite_directory_format is guaranteed to return a string
7766 no longer than PATH_MAX - 1 characters. */
7767 temp = polite_directory_format (t_string);
7768 if (temp != t_string)
7769 strcpy (t_string, temp);
7770 }
7771
7772 temp = trim_pathname (t_string, PATH_MAX - 1);
7773 /* If we're going to be expanding the prompt string later,
7774 quote the directory name. */
7775 if (promptvars || posixly_correct)
7776 /* Make sure that expand_prompt_string is called with a
7777 second argument of Q_DOUBLE_QUOTES if we use this
7778 function here. */
7779 temp = sh_backslash_quote_for_double_quotes (t_string);
7780 else
7781 temp = savestring (t_string);
7782
7783 goto add_string;
7784 }
7785
7786 case 'u':
7787 if (current_user.user_name == 0)
7788 get_current_user_info ();
7789 temp = savestring (current_user.user_name);
7790 goto add_string;
7791
7792 case 'h':
7793 case 'H':
7794 temp = savestring (current_host_name);
7795 if (c == 'h' && (t = (char *)strchr (temp, '.')))
7796 *t = '\0';
7797 goto add_string;
7798
7799 case '#':
7800 temp = itos (current_command_number);
7801 goto add_string;
7802
7803 case '!':
7804 #if !defined (HISTORY)
7805 temp = savestring ("1");
7806 #else /* HISTORY */
7807 temp = itos (history_number ());
7808 #endif /* HISTORY */
7809 goto add_string;
7810
7811 case '$':
7812 t = temp = (char *)xmalloc (3);
7813 if ((promptvars || posixly_correct) && (current_user.euid != 0))
7814 *t++ = '\\';
7815 *t++ = current_user.euid == 0 ? '#' : '$';
7816 *t = '\0';
7817 goto add_string;
7818
7819 case 'j':
7820 temp = itos (count_all_jobs ());
7821 goto add_string;
7822
7823 case 'l':
7824 #if defined (HAVE_TTYNAME)
7825 temp = (char *)ttyname (fileno (stdin));
7826 t = temp ? base_pathname (temp) : "tty";
7827 temp = savestring (t);
7828 #else
7829 temp = savestring ("tty");
7830 #endif /* !HAVE_TTYNAME */
7831 goto add_string;
7832
7833 #if defined (READLINE)
7834 case '[':
7835 case ']':
7836 if (no_line_editing)
7837 {
7838 string++;
7839 break;
7840 }
7841 temp = (char *)xmalloc (3);
7842 n = (c == '[') ? RL_PROMPT_START_IGNORE : RL_PROMPT_END_IGNORE;
7843 i = 0;
7844 if (n == CTLESC || n == CTLNUL)
7845 temp[i++] = CTLESC;
7846 temp[i++] = n;
7847 temp[i] = '\0';
7848 goto add_string;
7849 #endif /* READLINE */
7850
7851 case '\\':
7852 case 'a':
7853 case 'e':
7854 case 'r':
7855 temp = (char *)xmalloc (2);
7856 if (c == 'a')
7857 temp[0] = '\07';
7858 else if (c == 'e')
7859 temp[0] = '\033';
7860 else if (c == 'r')
7861 temp[0] = '\r';
7862 else /* (c == '\\') */
7863 temp[0] = c;
7864 temp[1] = '\0';
7865 goto add_string;
7866
7867 default:
7868 not_escape:
7869 temp = (char *)xmalloc (3);
7870 temp[0] = '\\';
7871 temp[1] = c;
7872 temp[2] = '\0';
7873
7874 add_string:
7875 if (c)
7876 string++;
7877 result =
7878 sub_append_string (temp, result, &result_index, &result_size);
7879 temp = (char *)NULL; /* Freed in sub_append_string (). */
7880 result[result_index] = '\0';
7881 break;
7882 }
7883 }
7884 else
7885 {
7886 RESIZE_MALLOCED_BUFFER (result, result_index, 3, result_size, PROMPT_GROWTH);
7887 result[result_index++] = c;
7888 result[result_index] = '\0';
7889 }
7890 }
7891 #else /* !PROMPT_STRING_DECODE */
7892 result = savestring (string);
7893 #endif /* !PROMPT_STRING_DECODE */
7894
7895 /* Save the delimiter stack and point `dstack' to temp space so any
7896 command substitutions in the prompt string won't result in screwing
7897 up the parser's quoting state. */
7898 save_dstack = dstack;
7899 dstack = temp_dstack;
7900 dstack.delimiter_depth = 0;
7901
7902 /* Perform variable and parameter expansion and command substitution on
7903 the prompt string. */
7904 if (promptvars || posixly_correct)
7905 {
7906 last_exit_value = last_command_exit_value;
7907 last_comsub_pid = last_command_subst_pid;
7908 list = expand_prompt_string (result, Q_DOUBLE_QUOTES, 0);
7909 free (result);
7910 result = string_list (list);
7911 dispose_words (list);
7912 last_command_exit_value = last_exit_value;
7913 last_command_subst_pid = last_comsub_pid;
7914 }
7915 else
7916 {
7917 t = dequote_string (result);
7918 free (result);
7919 result = t;
7920 }
7921
7922 dstack = save_dstack;
7923
7924 return (result);
7925 }
7926
7927 /************************************************
7928 * *
7929 * ERROR HANDLING *
7930 * *
7931 ************************************************/
7932
7933 /* Report a syntax error, and restart the parser. Call here for fatal
7934 errors. */
7935 int
7936 yyerror (msg)
7937 const char *msg;
7938 {
7939 report_syntax_error ((char *)NULL);
7940 reset_parser ();
7941 return (0);
7942 }
7943
7944 static char *
7945 error_token_from_token (tok)
7946 int tok;
7947 {
7948 char *t;
7949
7950 if (t = find_token_in_alist (tok, word_token_alist, 0))
7951 return t;
7952
7953 if (t = find_token_in_alist (tok, other_token_alist, 0))
7954 return t;
7955
7956 t = (char *)NULL;
7957 /* This stuff is dicy and needs closer inspection */
7958 switch (current_token)
7959 {
7960 case WORD:
7961 case ASSIGNMENT_WORD:
7962 if (yylval.word)
7963 t = savestring (yylval.word->word);
7964 break;
7965 case NUMBER:
7966 t = itos (yylval.number);
7967 break;
7968 case ARITH_CMD:
7969 if (yylval.word_list)
7970 t = string_list (yylval.word_list);
7971 break;
7972 case ARITH_FOR_EXPRS:
7973 if (yylval.word_list)
7974 t = string_list_internal (yylval.word_list, " ; ");
7975 break;
7976 case COND_CMD:
7977 t = (char *)NULL; /* punt */
7978 break;
7979 }
7980
7981 return t;
7982 }
7983
7984 static char *
7985 error_token_from_text ()
7986 {
7987 char *msg, *t;
7988 int token_end, i;
7989
7990 t = shell_input_line;
7991 i = shell_input_line_index;
7992 token_end = 0;
7993 msg = (char *)NULL;
7994
7995 if (i && t[i] == '\0')
7996 i--;
7997
7998 while (i && (whitespace (t[i]) || t[i] == '\n'))
7999 i--;
8000
8001 if (i)
8002 token_end = i + 1;
8003
8004 while (i && (member (t[i], " \n\t;|&") == 0))
8005 i--;
8006
8007 while (i != token_end && (whitespace (t[i]) || t[i] == '\n'))
8008 i++;
8009
8010 /* Return our idea of the offending token. */
8011 if (token_end || (i == 0 && token_end == 0))
8012 {
8013 if (token_end)
8014 msg = substring (t, i, token_end);
8015 else /* one-character token */
8016 {
8017 msg = (char *)xmalloc (2);
8018 msg[0] = t[i];
8019 msg[1] = '\0';
8020 }
8021 }
8022
8023 return (msg);
8024 }
8025
8026 static void
8027 print_offending_line ()
8028 {
8029 char *msg;
8030 int token_end;
8031
8032 msg = savestring (shell_input_line);
8033 token_end = strlen (msg);
8034 while (token_end && msg[token_end - 1] == '\n')
8035 msg[--token_end] = '\0';
8036
8037 parser_error (line_number, "`%s'", msg);
8038 free (msg);
8039 }
8040
8041 /* Report a syntax error with line numbers, etc.
8042 Call here for recoverable errors. If you have a message to print,
8043 then place it in MESSAGE, otherwise pass NULL and this will figure
8044 out an appropriate message for you. */
8045 static void
8046 report_syntax_error (message)
8047 char *message;
8048 {
8049 char *msg, *p;
8050
8051 if (message)
8052 {
8053 parser_error (line_number, "%s", message);
8054 if (interactive && EOF_Reached)
8055 EOF_Reached = 0;
8056 last_command_exit_value = parse_and_execute_level ? EX_BADSYNTAX : EX_BADUSAGE;
8057 return;
8058 }
8059
8060 /* If the line of input we're reading is not null, try to find the
8061 objectionable token. First, try to figure out what token the
8062 parser's complaining about by looking at current_token. */
8063 if (current_token != 0 && EOF_Reached == 0 && (msg = error_token_from_token (current_token)))
8064 {
8065 if (ansic_shouldquote (msg))
8066 {
8067 p = ansic_quote (msg, 0, NULL);
8068 free (msg);
8069 msg = p;
8070 }
8071 parser_error (line_number, _("syntax error near unexpected token `%s'"), msg);
8072 free (msg);
8073
8074 if (interactive == 0)
8075 print_offending_line ();
8076
8077 last_command_exit_value = parse_and_execute_level ? EX_BADSYNTAX : EX_BADUSAGE;
8078 return;
8079 }
8080
8081 /* If looking at the current token doesn't prove fruitful, try to find the
8082 offending token by analyzing the text of the input line near the current
8083 input line index and report what we find. */
8084 if (shell_input_line && *shell_input_line)
8085 {
8086 msg = error_token_from_text ();
8087 if (msg)
8088 {
8089 parser_error (line_number, _("syntax error near `%s'"), msg);
8090 free (msg);
8091 }
8092
8093 /* If not interactive, print the line containing the error. */
8094 if (interactive == 0)
8095 print_offending_line ();
8096 }
8097 else
8098 {
8099 msg = EOF_Reached ? _("syntax error: unexpected end of file") : _("syntax error");
8100 parser_error (line_number, "%s", msg);
8101 /* When the shell is interactive, this file uses EOF_Reached
8102 only for error reporting. Other mechanisms are used to
8103 decide whether or not to exit. */
8104 if (interactive && EOF_Reached)
8105 EOF_Reached = 0;
8106 }
8107
8108 last_command_exit_value = parse_and_execute_level ? EX_BADSYNTAX : EX_BADUSAGE;
8109 }
8110
8111 /* ??? Needed function. ??? We have to be able to discard the constructs
8112 created during parsing. In the case of error, we want to return
8113 allocated objects to the memory pool. In the case of no error, we want
8114 to throw away the information about where the allocated objects live.
8115 (dispose_command () will actually free the command.) */
8116 static void
8117 discard_parser_constructs (error_p)
8118 int error_p;
8119 {
8120 }
8121
8122 /************************************************
8123 * *
8124 * EOF HANDLING *
8125 * *
8126 ************************************************/
8127
8128 /* Do that silly `type "bye" to exit' stuff. You know, "ignoreeof". */
8129
8130 /* A flag denoting whether or not ignoreeof is set. */
8131 int ignoreeof = 0;
8132
8133 /* The number of times that we have encountered an EOF character without
8134 another character intervening. When this gets above the limit, the
8135 shell terminates. */
8136 int eof_encountered = 0;
8137
8138 /* The limit for eof_encountered. */
8139 int eof_encountered_limit = 10;
8140
8141 /* If we have EOF as the only input unit, this user wants to leave
8142 the shell. If the shell is not interactive, then just leave.
8143 Otherwise, if ignoreeof is set, and we haven't done this the
8144 required number of times in a row, print a message. */
8145 static void
8146 handle_eof_input_unit ()
8147 {
8148 if (interactive)
8149 {
8150 /* shell.c may use this to decide whether or not to write out the
8151 history, among other things. We use it only for error reporting
8152 in this file. */
8153 if (EOF_Reached)
8154 EOF_Reached = 0;
8155
8156 /* If the user wants to "ignore" eof, then let her do so, kind of. */
8157 if (ignoreeof)
8158 {
8159 if (eof_encountered < eof_encountered_limit)
8160 {
8161 fprintf (stderr, _("Use \"%s\" to leave the shell.\n"),
8162 login_shell ? "logout" : "exit");
8163 eof_encountered++;
8164 /* Reset the parsing state. */
8165 last_read_token = current_token = '\n';
8166 /* Reset the prompt string to be $PS1. */
8167 prompt_string_pointer = (char **)NULL;
8168 prompt_again ();
8169 return;
8170 }
8171 }
8172
8173 /* In this case EOF should exit the shell. Do it now. */
8174 reset_parser ();
8175 exit_builtin ((WORD_LIST *)NULL);
8176 }
8177 else
8178 {
8179 /* We don't write history files, etc., for non-interactive shells. */
8180 EOF_Reached = 1;
8181 }
8182 }
8183
8184 /************************************************
8185 * *
8186 * STRING PARSING FUNCTIONS *
8187 * *
8188 ************************************************/
8189
8190 /* It's very important that these two functions treat the characters
8191 between ( and ) identically. */
8192
8193 static WORD_LIST parse_string_error;
8194
8195 /* Take a string and run it through the shell parser, returning the
8196 resultant word list. Used by compound array assignment. */
8197 WORD_LIST *
8198 parse_string_to_word_list (s, flags, whom)
8199 char *s;
8200 int flags;
8201 const char *whom;
8202 {
8203 WORD_LIST *wl;
8204 int tok, orig_current_token, orig_line_number, orig_input_terminator;
8205 int orig_line_count;
8206 int old_echo_input, old_expand_aliases;
8207 #if defined (HISTORY)
8208 int old_remember_on_history, old_history_expansion_inhibited;
8209 #endif
8210
8211 #if defined (HISTORY)
8212 old_remember_on_history = remember_on_history;
8213 # if defined (BANG_HISTORY)
8214 old_history_expansion_inhibited = history_expansion_inhibited;
8215 # endif
8216 bash_history_disable ();
8217 #endif
8218
8219 orig_line_number = line_number;
8220 orig_line_count = current_command_line_count;
8221 orig_input_terminator = shell_input_line_terminator;
8222 old_echo_input = echo_input_at_read;
8223 old_expand_aliases = expand_aliases;
8224
8225 push_stream (1);
8226 last_read_token = WORD; /* WORD to allow reserved words here */
8227 current_command_line_count = 0;
8228 echo_input_at_read = expand_aliases = 0;
8229
8230 with_input_from_string (s, whom);
8231 wl = (WORD_LIST *)NULL;
8232
8233 if (flags & 1)
8234 parser_state |= PST_COMPASSIGN|PST_REPARSE;
8235
8236 while ((tok = read_token (READ)) != yacc_EOF)
8237 {
8238 if (tok == '\n' && *bash_input.location.string == '\0')
8239 break;
8240 if (tok == '\n') /* Allow newlines in compound assignments */
8241 continue;
8242 if (tok != WORD && tok != ASSIGNMENT_WORD)
8243 {
8244 line_number = orig_line_number + line_number - 1;
8245 orig_current_token = current_token;
8246 current_token = tok;
8247 yyerror (NULL); /* does the right thing */
8248 current_token = orig_current_token;
8249 if (wl)
8250 dispose_words (wl);
8251 wl = &parse_string_error;
8252 break;
8253 }
8254 wl = make_word_list (yylval.word, wl);
8255 }
8256
8257 last_read_token = '\n';
8258 pop_stream ();
8259
8260 #if defined (HISTORY)
8261 remember_on_history = old_remember_on_history;
8262 # if defined (BANG_HISTORY)
8263 history_expansion_inhibited = old_history_expansion_inhibited;
8264 # endif /* BANG_HISTORY */
8265 #endif /* HISTORY */
8266
8267 echo_input_at_read = old_echo_input;
8268 expand_aliases = old_expand_aliases;
8269
8270 current_command_line_count = orig_line_count;
8271 shell_input_line_terminator = orig_input_terminator;
8272
8273 if (flags & 1)
8274 parser_state &= ~(PST_COMPASSIGN|PST_REPARSE);
8275
8276 if (wl == &parse_string_error)
8277 {
8278 last_command_exit_value = EXECUTION_FAILURE;
8279 if (interactive_shell == 0 && posixly_correct)
8280 jump_to_top_level (FORCE_EOF);
8281 else
8282 jump_to_top_level (DISCARD);
8283 }
8284
8285 return (REVERSE_LIST (wl, WORD_LIST *));
8286 }
8287
8288 static char *
8289 parse_compound_assignment (retlenp)
8290 int *retlenp;
8291 {
8292 WORD_LIST *wl, *rl;
8293 int tok, orig_line_number, orig_token_size, orig_last_token, assignok;
8294 char *saved_token, *ret;
8295
8296 saved_token = token;
8297 orig_token_size = token_buffer_size;
8298 orig_line_number = line_number;
8299 orig_last_token = last_read_token;
8300
8301 last_read_token = WORD; /* WORD to allow reserved words here */
8302
8303 token = (char *)NULL;
8304 token_buffer_size = 0;
8305
8306 assignok = parser_state&PST_ASSIGNOK; /* XXX */
8307
8308 wl = (WORD_LIST *)NULL; /* ( */
8309 parser_state |= PST_COMPASSIGN;
8310
8311 while ((tok = read_token (READ)) != ')')
8312 {
8313 if (tok == '\n') /* Allow newlines in compound assignments */
8314 {
8315 if (SHOULD_PROMPT ())
8316 prompt_again ();
8317 continue;
8318 }
8319 if (tok != WORD && tok != ASSIGNMENT_WORD)
8320 {
8321 current_token = tok; /* for error reporting */
8322 if (tok == yacc_EOF) /* ( */
8323 parser_error (orig_line_number, _("unexpected EOF while looking for matching `)'"));
8324 else
8325 yyerror(NULL); /* does the right thing */
8326 if (wl)
8327 dispose_words (wl);
8328 wl = &parse_string_error;
8329 break;
8330 }
8331 wl = make_word_list (yylval.word, wl);
8332 }
8333
8334 FREE (token);
8335 token = saved_token;
8336 token_buffer_size = orig_token_size;
8337
8338 parser_state &= ~PST_COMPASSIGN;
8339
8340 if (wl == &parse_string_error)
8341 {
8342 last_command_exit_value = EXECUTION_FAILURE;
8343 last_read_token = '\n'; /* XXX */
8344 if (interactive_shell == 0 && posixly_correct)
8345 jump_to_top_level (FORCE_EOF);
8346 else
8347 jump_to_top_level (DISCARD);
8348 }
8349
8350 last_read_token = orig_last_token; /* XXX - was WORD? */
8351
8352 if (wl)
8353 {
8354 rl = REVERSE_LIST (wl, WORD_LIST *);
8355 ret = string_list (rl);
8356 dispose_words (rl);
8357 }
8358 else
8359 ret = (char *)NULL;
8360
8361 if (retlenp)
8362 *retlenp = (ret && *ret) ? strlen (ret) : 0;
8363
8364 if (assignok)
8365 parser_state |= PST_ASSIGNOK;
8366
8367 return ret;
8368 }
8369
8370 /************************************************
8371 * *
8372 * SAVING AND RESTORING PARTIAL PARSE STATE *
8373 * *
8374 ************************************************/
8375
8376 sh_parser_state_t *
8377 save_parser_state (ps)
8378 sh_parser_state_t *ps;
8379 {
8380 if (ps == 0)
8381 ps = (sh_parser_state_t *)xmalloc (sizeof (sh_parser_state_t));
8382 if (ps == 0)
8383 return ((sh_parser_state_t *)NULL);
8384
8385 ps->parser_state = parser_state;
8386 ps->token_state = save_token_state ();
8387
8388 ps->input_line_terminator = shell_input_line_terminator;
8389 ps->eof_encountered = eof_encountered;
8390
8391 ps->prompt_string_pointer = prompt_string_pointer;
8392
8393 ps->current_command_line_count = current_command_line_count;
8394
8395 #if defined (HISTORY)
8396 ps->remember_on_history = remember_on_history;
8397 # if defined (BANG_HISTORY)
8398 ps->history_expansion_inhibited = history_expansion_inhibited;
8399 # endif
8400 #endif
8401
8402 ps->last_command_exit_value = last_command_exit_value;
8403 #if defined (ARRAY_VARS)
8404 ps->pipestatus = save_pipestatus_array ();
8405 #endif
8406
8407 ps->last_shell_builtin = last_shell_builtin;
8408 ps->this_shell_builtin = this_shell_builtin;
8409
8410 ps->expand_aliases = expand_aliases;
8411 ps->echo_input_at_read = echo_input_at_read;
8412 ps->need_here_doc = need_here_doc;
8413
8414 ps->token = token;
8415 ps->token_buffer_size = token_buffer_size;
8416 /* Force reallocation on next call to read_token_word */
8417 token = 0;
8418 token_buffer_size = 0;
8419
8420 return (ps);
8421 }
8422
8423 void
8424 restore_parser_state (ps)
8425 sh_parser_state_t *ps;
8426 {
8427 if (ps == 0)
8428 return;
8429
8430 parser_state = ps->parser_state;
8431 if (ps->token_state)
8432 {
8433 restore_token_state (ps->token_state);
8434 free (ps->token_state);
8435 }
8436
8437 shell_input_line_terminator = ps->input_line_terminator;
8438 eof_encountered = ps->eof_encountered;
8439
8440 prompt_string_pointer = ps->prompt_string_pointer;
8441
8442 current_command_line_count = ps->current_command_line_count;
8443
8444 #if defined (HISTORY)
8445 remember_on_history = ps->remember_on_history;
8446 # if defined (BANG_HISTORY)
8447 history_expansion_inhibited = ps->history_expansion_inhibited;
8448 # endif
8449 #endif
8450
8451 last_command_exit_value = ps->last_command_exit_value;
8452 #if defined (ARRAY_VARS)
8453 restore_pipestatus_array (ps->pipestatus);
8454 #endif
8455
8456 last_shell_builtin = ps->last_shell_builtin;
8457 this_shell_builtin = ps->this_shell_builtin;
8458
8459 expand_aliases = ps->expand_aliases;
8460 echo_input_at_read = ps->echo_input_at_read;
8461 need_here_doc = ps->need_here_doc;
8462
8463 FREE (token);
8464 token = ps->token;
8465 token_buffer_size = ps->token_buffer_size;
8466 }
8467
8468 sh_input_line_state_t *
8469 save_input_line_state (ls)
8470 sh_input_line_state_t *ls;
8471 {
8472 if (ls == 0)
8473 ls = (sh_input_line_state_t *)xmalloc (sizeof (sh_input_line_state_t));
8474 if (ls == 0)
8475 return ((sh_input_line_state_t *)NULL);
8476
8477 ls->input_line = shell_input_line;
8478 ls->input_line_size = shell_input_line_size;
8479 ls->input_line_len = shell_input_line_len;
8480 ls->input_line_index = shell_input_line_index;
8481
8482 /* force reallocation */
8483 shell_input_line = 0;
8484 shell_input_line_size = shell_input_line_len = shell_input_line_index = 0;
8485
8486 return ls;
8487 }
8488
8489 void
8490 restore_input_line_state (ls)
8491 sh_input_line_state_t *ls;
8492 {
8493 FREE (shell_input_line);
8494 shell_input_line = ls->input_line;
8495 shell_input_line_size = ls->input_line_size;
8496 shell_input_line_len = ls->input_line_len;
8497 shell_input_line_index = ls->input_line_index;
8498
8499 set_line_mbstate ();
8500 }
8501
8502 /************************************************
8503 * *
8504 * MULTIBYTE CHARACTER HANDLING *
8505 * *
8506 ************************************************/
8507
8508 #if defined (HANDLE_MULTIBYTE)
8509 static void
8510 set_line_mbstate ()
8511 {
8512 int c;
8513 size_t i, previ, len;
8514 mbstate_t mbs, prevs;
8515 size_t mbclen;
8516
8517 if (shell_input_line == NULL)
8518 return;
8519 len = strlen (shell_input_line); /* XXX - shell_input_line_len ? */
8520 FREE (shell_input_line_property);
8521 shell_input_line_property = (char *)xmalloc (len + 1);
8522
8523 memset (&prevs, '\0', sizeof (mbstate_t));
8524 for (i = previ = 0; i < len; i++)
8525 {
8526 mbs = prevs;
8527
8528 c = shell_input_line[i];
8529 if (c == EOF)
8530 {
8531 size_t j;
8532 for (j = i; j < len; j++)
8533 shell_input_line_property[j] = 1;
8534 break;
8535 }
8536
8537 mbclen = mbrlen (shell_input_line + previ, i - previ + 1, &mbs);
8538 if (mbclen == 1 || mbclen == (size_t)-1)
8539 {
8540 mbclen = 1;
8541 previ = i + 1;
8542 }
8543 else if (mbclen == (size_t)-2)
8544 mbclen = 0;
8545 else if (mbclen > 1)
8546 {
8547 mbclen = 0;
8548 previ = i + 1;
8549 prevs = mbs;
8550 }
8551 else
8552 {
8553 /* XXX - what to do if mbrlen returns 0? (null wide character) */
8554 size_t j;
8555 for (j = i; j < len; j++)
8556 shell_input_line_property[j] = 1;
8557 break;
8558 }
8559
8560 shell_input_line_property[i] = mbclen;
8561 }
8562 }
8563 #endif /* HANDLE_MULTIBYTE */
8564
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