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Bash-5.0 patch 2: fix expansion of aliases whose value ends with an unquoted tab
[thirdparty/bash.git] / y.tab.c
1 /* A Bison parser, made by GNU Bison 3.0.5. */
2
3 /* Bison implementation for Yacc-like parsers in C
4
5 Copyright (C) 1984, 1989-1990, 2000-2015, 2018 Free Software Foundation, Inc.
6
7 This program is free software: you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation, either version 3 of the License, or
10 (at your option) any later version.
11
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
16
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>. */
19
20 /* As a special exception, you may create a larger work that contains
21 part or all of the Bison parser skeleton and distribute that work
22 under terms of your choice, so long as that work isn't itself a
23 parser generator using the skeleton or a modified version thereof
24 as a parser skeleton. Alternatively, if you modify or redistribute
25 the parser skeleton itself, you may (at your option) remove this
26 special exception, which will cause the skeleton and the resulting
27 Bison output files to be licensed under the GNU General Public
28 License without this special exception.
29
30 This special exception was added by the Free Software Foundation in
31 version 2.2 of Bison. */
32
33 /* C LALR(1) parser skeleton written by Richard Stallman, by
34 simplifying the original so-called "semantic" parser. */
35
36 /* All symbols defined below should begin with yy or YY, to avoid
37 infringing on user name space. This should be done even for local
38 variables, as they might otherwise be expanded by user macros.
39 There are some unavoidable exceptions within include files to
40 define necessary library symbols; they are noted "INFRINGES ON
41 USER NAME SPACE" below. */
42
43 /* Identify Bison output. */
44 #define YYBISON 1
45
46 /* Bison version. */
47 #define YYBISON_VERSION "3.0.5"
48
49 /* Skeleton name. */
50 #define YYSKELETON_NAME "yacc.c"
51
52 /* Pure parsers. */
53 #define YYPURE 0
54
55 /* Push parsers. */
56 #define YYPUSH 0
57
58 /* Pull parsers. */
59 #define YYPULL 1
60
61
62
63
64 /* Copy the first part of user declarations. */
65 #line 21 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:339 */
66
67 #include "config.h"
68
69 #include "bashtypes.h"
70 #include "bashansi.h"
71
72 #include "filecntl.h"
73
74 #if defined (HAVE_UNISTD_H)
75 # include <unistd.h>
76 #endif
77
78 #if defined (HAVE_LOCALE_H)
79 # include <locale.h>
80 #endif
81
82 #include <stdio.h>
83 #include "chartypes.h"
84 #include <signal.h>
85
86 #include "memalloc.h"
87
88 #include "bashintl.h"
89
90 #define NEED_STRFTIME_DECL /* used in externs.h */
91
92 #include "shell.h"
93 #include "execute_cmd.h"
94 #include "typemax.h" /* SIZE_MAX if needed */
95 #include "trap.h"
96 #include "flags.h"
97 #include "parser.h"
98 #include "mailcheck.h"
99 #include "test.h"
100 #include "builtins.h"
101 #include "builtins/common.h"
102 #include "builtins/builtext.h"
103
104 #include "shmbutil.h"
105
106 #if defined (READLINE)
107 # include "bashline.h"
108 # include <readline/readline.h>
109 #endif /* READLINE */
110
111 #if defined (HISTORY)
112 # include "bashhist.h"
113 # include <readline/history.h>
114 #endif /* HISTORY */
115
116 #if defined (JOB_CONTROL)
117 # include "jobs.h"
118 #else
119 extern int cleanup_dead_jobs __P((void));
120 #endif /* JOB_CONTROL */
121
122 #if defined (ALIAS)
123 # include "alias.h"
124 #else
125 typedef void *alias_t;
126 #endif /* ALIAS */
127
128 #if defined (PROMPT_STRING_DECODE)
129 # ifndef _MINIX
130 # include <sys/param.h>
131 # endif
132 # include <time.h>
133 # if defined (TM_IN_SYS_TIME)
134 # include <sys/types.h>
135 # include <sys/time.h>
136 # endif /* TM_IN_SYS_TIME */
137 # include "maxpath.h"
138 #endif /* PROMPT_STRING_DECODE */
139
140 #define RE_READ_TOKEN -99
141 #define NO_EXPANSION -100
142
143 #define END_ALIAS -2
144
145 #ifdef DEBUG
146 # define YYDEBUG 1
147 #else
148 # define YYDEBUG 0
149 #endif
150
151 #if defined (HANDLE_MULTIBYTE)
152 # define last_shell_getc_is_singlebyte \
153 ((shell_input_line_index > 1) \
154 ? shell_input_line_property[shell_input_line_index - 1] \
155 : 1)
156 # define MBTEST(x) ((x) && last_shell_getc_is_singlebyte)
157 #else
158 # define last_shell_getc_is_singlebyte 1
159 # define MBTEST(x) ((x))
160 #endif
161
162 #if defined (EXTENDED_GLOB)
163 extern int extended_glob;
164 #endif
165
166 extern int dump_translatable_strings, dump_po_strings;
167
168 #if !defined (errno)
169 extern int errno;
170 #endif
171
172 /* **************************************************************** */
173 /* */
174 /* "Forward" declarations */
175 /* */
176 /* **************************************************************** */
177
178 #ifdef DEBUG
179 static void debug_parser __P((int));
180 #endif
181
182 static int yy_getc __P((void));
183 static int yy_ungetc __P((int));
184
185 #if defined (READLINE)
186 static int yy_readline_get __P((void));
187 static int yy_readline_unget __P((int));
188 #endif
189
190 static int yy_string_get __P((void));
191 static int yy_string_unget __P((int));
192 static void rewind_input_string __P((void));
193 static int yy_stream_get __P((void));
194 static int yy_stream_unget __P((int));
195
196 static int shell_getc __P((int));
197 static void shell_ungetc __P((int));
198 static void discard_until __P((int));
199
200 #if defined (ALIAS) || defined (DPAREN_ARITHMETIC)
201 static void push_string __P((char *, int, alias_t *));
202 static void pop_string __P((void));
203 static void free_string_list __P((void));
204 #endif
205
206 static char *read_a_line __P((int));
207
208 static int reserved_word_acceptable __P((int));
209 static int yylex __P((void));
210
211 static void push_heredoc __P((REDIRECT *));
212 static char *mk_alexpansion __P((char *));
213 static int alias_expand_token __P((char *));
214 static int time_command_acceptable __P((void));
215 static int special_case_tokens __P((char *));
216 static int read_token __P((int));
217 static char *parse_matched_pair __P((int, int, int, int *, int));
218 static char *parse_comsub __P((int, int, int, int *, int));
219 #if defined (ARRAY_VARS)
220 static char *parse_compound_assignment __P((int *));
221 #endif
222 #if defined (DPAREN_ARITHMETIC) || defined (ARITH_FOR_COMMAND)
223 static int parse_dparen __P((int));
224 static int parse_arith_cmd __P((char **, int));
225 #endif
226 #if defined (COND_COMMAND)
227 static void cond_error __P((void));
228 static COND_COM *cond_expr __P((void));
229 static COND_COM *cond_or __P((void));
230 static COND_COM *cond_and __P((void));
231 static COND_COM *cond_term __P((void));
232 static int cond_skip_newlines __P((void));
233 static COMMAND *parse_cond_command __P((void));
234 #endif
235 #if defined (ARRAY_VARS)
236 static int token_is_assignment __P((char *, int));
237 static int token_is_ident __P((char *, int));
238 #endif
239 static int read_token_word __P((int));
240 static void discard_parser_constructs __P((int));
241
242 static char *error_token_from_token __P((int));
243 static char *error_token_from_text __P((void));
244 static void print_offending_line __P((void));
245 static void report_syntax_error __P((char *));
246
247 static void handle_eof_input_unit __P((void));
248 static void prompt_again __P((void));
249 #if 0
250 static void reset_readline_prompt __P((void));
251 #endif
252 static void print_prompt __P((void));
253
254 #if defined (HANDLE_MULTIBYTE)
255 static void set_line_mbstate __P((void));
256 static char *shell_input_line_property = NULL;
257 static size_t shell_input_line_propsize = 0;
258 #else
259 # define set_line_mbstate()
260 #endif
261
262 extern int yyerror __P((const char *));
263
264 #ifdef DEBUG
265 extern int yydebug;
266 #endif
267
268 /* Default prompt strings */
269 char *primary_prompt = PPROMPT;
270 char *secondary_prompt = SPROMPT;
271
272 /* PROMPT_STRING_POINTER points to one of these, never to an actual string. */
273 char *ps1_prompt, *ps2_prompt;
274
275 /* Displayed after reading a command but before executing it in an interactive shell */
276 char *ps0_prompt;
277
278 /* Handle on the current prompt string. Indirectly points through
279 ps1_ or ps2_prompt. */
280 char **prompt_string_pointer = (char **)NULL;
281 char *current_prompt_string;
282
283 /* Non-zero means we expand aliases in commands. */
284 int expand_aliases = 0;
285
286 /* If non-zero, the decoded prompt string undergoes parameter and
287 variable substitution, command substitution, arithmetic substitution,
288 string expansion, process substitution, and quote removal in
289 decode_prompt_string. */
290 int promptvars = 1;
291
292 /* If non-zero, $'...' and $"..." are expanded when they appear within
293 a ${...} expansion, even when the expansion appears within double
294 quotes. */
295 int extended_quote = 1;
296
297 /* The number of lines read from input while creating the current command. */
298 int current_command_line_count;
299
300 /* The number of lines in a command saved while we run parse_and_execute */
301 int saved_command_line_count;
302
303 /* The token that currently denotes the end of parse. */
304 int shell_eof_token;
305
306 /* The token currently being read. */
307 int current_token;
308
309 /* The current parser state. */
310 int parser_state;
311
312 /* Variables to manage the task of reading here documents, because we need to
313 defer the reading until after a complete command has been collected. */
314 static REDIRECT *redir_stack[HEREDOC_MAX];
315 int need_here_doc;
316
317 /* Where shell input comes from. History expansion is performed on each
318 line when the shell is interactive. */
319 static char *shell_input_line = (char *)NULL;
320 static size_t shell_input_line_index;
321 static size_t shell_input_line_size; /* Amount allocated for shell_input_line. */
322 static size_t shell_input_line_len; /* strlen (shell_input_line) */
323
324 /* Either zero or EOF. */
325 static int shell_input_line_terminator;
326
327 /* The line number in a script on which a function definition starts. */
328 static int function_dstart;
329
330 /* The line number in a script on which a function body starts. */
331 static int function_bstart;
332
333 /* The line number in a script at which an arithmetic for command starts. */
334 static int arith_for_lineno;
335
336 /* The decoded prompt string. Used if READLINE is not defined or if
337 editing is turned off. Analogous to current_readline_prompt. */
338 static char *current_decoded_prompt;
339
340 /* The last read token, or NULL. read_token () uses this for context
341 checking. */
342 static int last_read_token;
343
344 /* The token read prior to last_read_token. */
345 static int token_before_that;
346
347 /* The token read prior to token_before_that. */
348 static int two_tokens_ago;
349
350 static int global_extglob;
351
352 /* The line number in a script where the word in a `case WORD', `select WORD'
353 or `for WORD' begins. This is a nested command maximum, since the array
354 index is decremented after a case, select, or for command is parsed. */
355 #define MAX_CASE_NEST 128
356 static int word_lineno[MAX_CASE_NEST+1];
357 static int word_top = -1;
358
359 /* If non-zero, it is the token that we want read_token to return
360 regardless of what text is (or isn't) present to be read. This
361 is reset by read_token. If token_to_read == WORD or
362 ASSIGNMENT_WORD, yylval.word should be set to word_desc_to_read. */
363 static int token_to_read;
364 static WORD_DESC *word_desc_to_read;
365
366 static REDIRECTEE source;
367 static REDIRECTEE redir;
368
369 static FILE *yyoutstream;
370 static FILE *yyerrstream;
371
372 #line 373 "y.tab.c" /* yacc.c:339 */
373
374 # ifndef YY_NULLPTR
375 # if defined __cplusplus && 201103L <= __cplusplus
376 # define YY_NULLPTR nullptr
377 # else
378 # define YY_NULLPTR 0
379 # endif
380 # endif
381
382 /* Enabling verbose error messages. */
383 #ifdef YYERROR_VERBOSE
384 # undef YYERROR_VERBOSE
385 # define YYERROR_VERBOSE 1
386 #else
387 # define YYERROR_VERBOSE 0
388 #endif
389
390 /* In a future release of Bison, this section will be replaced
391 by #include "y.tab.h". */
392 #ifndef YY_YY_Y_TAB_H_INCLUDED
393 # define YY_YY_Y_TAB_H_INCLUDED
394 /* Debug traces. */
395 #ifndef YYDEBUG
396 # define YYDEBUG 0
397 #endif
398 #if YYDEBUG
399 extern int yydebug;
400 #endif
401
402 /* Token type. */
403 #ifndef YYTOKENTYPE
404 # define YYTOKENTYPE
405 enum yytokentype
406 {
407 IF = 258,
408 THEN = 259,
409 ELSE = 260,
410 ELIF = 261,
411 FI = 262,
412 CASE = 263,
413 ESAC = 264,
414 FOR = 265,
415 SELECT = 266,
416 WHILE = 267,
417 UNTIL = 268,
418 DO = 269,
419 DONE = 270,
420 FUNCTION = 271,
421 COPROC = 272,
422 COND_START = 273,
423 COND_END = 274,
424 COND_ERROR = 275,
425 IN = 276,
426 BANG = 277,
427 TIME = 278,
428 TIMEOPT = 279,
429 TIMEIGN = 280,
430 WORD = 281,
431 ASSIGNMENT_WORD = 282,
432 REDIR_WORD = 283,
433 NUMBER = 284,
434 ARITH_CMD = 285,
435 ARITH_FOR_EXPRS = 286,
436 COND_CMD = 287,
437 AND_AND = 288,
438 OR_OR = 289,
439 GREATER_GREATER = 290,
440 LESS_LESS = 291,
441 LESS_AND = 292,
442 LESS_LESS_LESS = 293,
443 GREATER_AND = 294,
444 SEMI_SEMI = 295,
445 SEMI_AND = 296,
446 SEMI_SEMI_AND = 297,
447 LESS_LESS_MINUS = 298,
448 AND_GREATER = 299,
449 AND_GREATER_GREATER = 300,
450 LESS_GREATER = 301,
451 GREATER_BAR = 302,
452 BAR_AND = 303,
453 yacc_EOF = 304
454 };
455 #endif
456 /* Tokens. */
457 #define IF 258
458 #define THEN 259
459 #define ELSE 260
460 #define ELIF 261
461 #define FI 262
462 #define CASE 263
463 #define ESAC 264
464 #define FOR 265
465 #define SELECT 266
466 #define WHILE 267
467 #define UNTIL 268
468 #define DO 269
469 #define DONE 270
470 #define FUNCTION 271
471 #define COPROC 272
472 #define COND_START 273
473 #define COND_END 274
474 #define COND_ERROR 275
475 #define IN 276
476 #define BANG 277
477 #define TIME 278
478 #define TIMEOPT 279
479 #define TIMEIGN 280
480 #define WORD 281
481 #define ASSIGNMENT_WORD 282
482 #define REDIR_WORD 283
483 #define NUMBER 284
484 #define ARITH_CMD 285
485 #define ARITH_FOR_EXPRS 286
486 #define COND_CMD 287
487 #define AND_AND 288
488 #define OR_OR 289
489 #define GREATER_GREATER 290
490 #define LESS_LESS 291
491 #define LESS_AND 292
492 #define LESS_LESS_LESS 293
493 #define GREATER_AND 294
494 #define SEMI_SEMI 295
495 #define SEMI_AND 296
496 #define SEMI_SEMI_AND 297
497 #define LESS_LESS_MINUS 298
498 #define AND_GREATER 299
499 #define AND_GREATER_GREATER 300
500 #define LESS_GREATER 301
501 #define GREATER_BAR 302
502 #define BAR_AND 303
503 #define yacc_EOF 304
504
505 /* Value type. */
506 #if ! defined YYSTYPE && ! defined YYSTYPE_IS_DECLARED
507
508 union YYSTYPE
509 {
510 #line 328 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:355 */
511
512 WORD_DESC *word; /* the word that we read. */
513 int number; /* the number that we read. */
514 WORD_LIST *word_list;
515 COMMAND *command;
516 REDIRECT *redirect;
517 ELEMENT element;
518 PATTERN_LIST *pattern;
519
520 #line 521 "y.tab.c" /* yacc.c:355 */
521 };
522
523 typedef union YYSTYPE YYSTYPE;
524 # define YYSTYPE_IS_TRIVIAL 1
525 # define YYSTYPE_IS_DECLARED 1
526 #endif
527
528
529 extern YYSTYPE yylval;
530
531 int yyparse (void);
532
533 #endif /* !YY_YY_Y_TAB_H_INCLUDED */
534
535 /* Copy the second part of user declarations. */
536
537 #line 538 "y.tab.c" /* yacc.c:358 */
538
539 #ifdef short
540 # undef short
541 #endif
542
543 #ifdef YYTYPE_UINT8
544 typedef YYTYPE_UINT8 yytype_uint8;
545 #else
546 typedef unsigned char yytype_uint8;
547 #endif
548
549 #ifdef YYTYPE_INT8
550 typedef YYTYPE_INT8 yytype_int8;
551 #else
552 typedef signed char yytype_int8;
553 #endif
554
555 #ifdef YYTYPE_UINT16
556 typedef YYTYPE_UINT16 yytype_uint16;
557 #else
558 typedef unsigned short int yytype_uint16;
559 #endif
560
561 #ifdef YYTYPE_INT16
562 typedef YYTYPE_INT16 yytype_int16;
563 #else
564 typedef short int yytype_int16;
565 #endif
566
567 #ifndef YYSIZE_T
568 # ifdef __SIZE_TYPE__
569 # define YYSIZE_T __SIZE_TYPE__
570 # elif defined size_t
571 # define YYSIZE_T size_t
572 # elif ! defined YYSIZE_T
573 # include <stddef.h> /* INFRINGES ON USER NAME SPACE */
574 # define YYSIZE_T size_t
575 # else
576 # define YYSIZE_T unsigned int
577 # endif
578 #endif
579
580 #define YYSIZE_MAXIMUM ((YYSIZE_T) -1)
581
582 #ifndef YY_
583 # if defined YYENABLE_NLS && YYENABLE_NLS
584 # if ENABLE_NLS
585 # include <libintl.h> /* INFRINGES ON USER NAME SPACE */
586 # define YY_(Msgid) dgettext ("bison-runtime", Msgid)
587 # endif
588 # endif
589 # ifndef YY_
590 # define YY_(Msgid) Msgid
591 # endif
592 #endif
593
594 #ifndef YY_ATTRIBUTE
595 # if (defined __GNUC__ \
596 && (2 < __GNUC__ || (__GNUC__ == 2 && 96 <= __GNUC_MINOR__))) \
597 || defined __SUNPRO_C && 0x5110 <= __SUNPRO_C
598 # define YY_ATTRIBUTE(Spec) __attribute__(Spec)
599 # else
600 # define YY_ATTRIBUTE(Spec) /* empty */
601 # endif
602 #endif
603
604 #ifndef YY_ATTRIBUTE_PURE
605 # define YY_ATTRIBUTE_PURE YY_ATTRIBUTE ((__pure__))
606 #endif
607
608 #ifndef YY_ATTRIBUTE_UNUSED
609 # define YY_ATTRIBUTE_UNUSED YY_ATTRIBUTE ((__unused__))
610 #endif
611
612 #if !defined _Noreturn \
613 && (!defined __STDC_VERSION__ || __STDC_VERSION__ < 201112)
614 # if defined _MSC_VER && 1200 <= _MSC_VER
615 # define _Noreturn __declspec (noreturn)
616 # else
617 # define _Noreturn YY_ATTRIBUTE ((__noreturn__))
618 # endif
619 #endif
620
621 /* Suppress unused-variable warnings by "using" E. */
622 #if ! defined lint || defined __GNUC__
623 # define YYUSE(E) ((void) (E))
624 #else
625 # define YYUSE(E) /* empty */
626 #endif
627
628 #if defined __GNUC__ && 407 <= __GNUC__ * 100 + __GNUC_MINOR__
629 /* Suppress an incorrect diagnostic about yylval being uninitialized. */
630 # define YY_IGNORE_MAYBE_UNINITIALIZED_BEGIN \
631 _Pragma ("GCC diagnostic push") \
632 _Pragma ("GCC diagnostic ignored \"-Wuninitialized\"")\
633 _Pragma ("GCC diagnostic ignored \"-Wmaybe-uninitialized\"")
634 # define YY_IGNORE_MAYBE_UNINITIALIZED_END \
635 _Pragma ("GCC diagnostic pop")
636 #else
637 # define YY_INITIAL_VALUE(Value) Value
638 #endif
639 #ifndef YY_IGNORE_MAYBE_UNINITIALIZED_BEGIN
640 # define YY_IGNORE_MAYBE_UNINITIALIZED_BEGIN
641 # define YY_IGNORE_MAYBE_UNINITIALIZED_END
642 #endif
643 #ifndef YY_INITIAL_VALUE
644 # define YY_INITIAL_VALUE(Value) /* Nothing. */
645 #endif
646
647
648 #if ! defined yyoverflow || YYERROR_VERBOSE
649
650 /* The parser invokes alloca or malloc; define the necessary symbols. */
651
652 # ifdef YYSTACK_USE_ALLOCA
653 # if YYSTACK_USE_ALLOCA
654 # ifdef __GNUC__
655 # define YYSTACK_ALLOC __builtin_alloca
656 # elif defined __BUILTIN_VA_ARG_INCR
657 # include <alloca.h> /* INFRINGES ON USER NAME SPACE */
658 # elif defined _AIX
659 # define YYSTACK_ALLOC __alloca
660 # elif defined _MSC_VER
661 # include <malloc.h> /* INFRINGES ON USER NAME SPACE */
662 # define alloca _alloca
663 # else
664 # define YYSTACK_ALLOC alloca
665 # if ! defined _ALLOCA_H && ! defined EXIT_SUCCESS
666 # include <stdlib.h> /* INFRINGES ON USER NAME SPACE */
667 /* Use EXIT_SUCCESS as a witness for stdlib.h. */
668 # ifndef EXIT_SUCCESS
669 # define EXIT_SUCCESS 0
670 # endif
671 # endif
672 # endif
673 # endif
674 # endif
675
676 # ifdef YYSTACK_ALLOC
677 /* Pacify GCC's 'empty if-body' warning. */
678 # define YYSTACK_FREE(Ptr) do { /* empty */; } while (0)
679 # ifndef YYSTACK_ALLOC_MAXIMUM
680 /* The OS might guarantee only one guard page at the bottom of the stack,
681 and a page size can be as small as 4096 bytes. So we cannot safely
682 invoke alloca (N) if N exceeds 4096. Use a slightly smaller number
683 to allow for a few compiler-allocated temporary stack slots. */
684 # define YYSTACK_ALLOC_MAXIMUM 4032 /* reasonable circa 2006 */
685 # endif
686 # else
687 # define YYSTACK_ALLOC YYMALLOC
688 # define YYSTACK_FREE YYFREE
689 # ifndef YYSTACK_ALLOC_MAXIMUM
690 # define YYSTACK_ALLOC_MAXIMUM YYSIZE_MAXIMUM
691 # endif
692 # if (defined __cplusplus && ! defined EXIT_SUCCESS \
693 && ! ((defined YYMALLOC || defined malloc) \
694 && (defined YYFREE || defined free)))
695 # include <stdlib.h> /* INFRINGES ON USER NAME SPACE */
696 # ifndef EXIT_SUCCESS
697 # define EXIT_SUCCESS 0
698 # endif
699 # endif
700 # ifndef YYMALLOC
701 # define YYMALLOC malloc
702 # if ! defined malloc && ! defined EXIT_SUCCESS
703 void *malloc (YYSIZE_T); /* INFRINGES ON USER NAME SPACE */
704 # endif
705 # endif
706 # ifndef YYFREE
707 # define YYFREE free
708 # if ! defined free && ! defined EXIT_SUCCESS
709 void free (void *); /* INFRINGES ON USER NAME SPACE */
710 # endif
711 # endif
712 # endif
713 #endif /* ! defined yyoverflow || YYERROR_VERBOSE */
714
715
716 #if (! defined yyoverflow \
717 && (! defined __cplusplus \
718 || (defined YYSTYPE_IS_TRIVIAL && YYSTYPE_IS_TRIVIAL)))
719
720 /* A type that is properly aligned for any stack member. */
721 union yyalloc
722 {
723 yytype_int16 yyss_alloc;
724 YYSTYPE yyvs_alloc;
725 };
726
727 /* The size of the maximum gap between one aligned stack and the next. */
728 # define YYSTACK_GAP_MAXIMUM (sizeof (union yyalloc) - 1)
729
730 /* The size of an array large to enough to hold all stacks, each with
731 N elements. */
732 # define YYSTACK_BYTES(N) \
733 ((N) * (sizeof (yytype_int16) + sizeof (YYSTYPE)) \
734 + YYSTACK_GAP_MAXIMUM)
735
736 # define YYCOPY_NEEDED 1
737
738 /* Relocate STACK from its old location to the new one. The
739 local variables YYSIZE and YYSTACKSIZE give the old and new number of
740 elements in the stack, and YYPTR gives the new location of the
741 stack. Advance YYPTR to a properly aligned location for the next
742 stack. */
743 # define YYSTACK_RELOCATE(Stack_alloc, Stack) \
744 do \
745 { \
746 YYSIZE_T yynewbytes; \
747 YYCOPY (&yyptr->Stack_alloc, Stack, yysize); \
748 Stack = &yyptr->Stack_alloc; \
749 yynewbytes = yystacksize * sizeof (*Stack) + YYSTACK_GAP_MAXIMUM; \
750 yyptr += yynewbytes / sizeof (*yyptr); \
751 } \
752 while (0)
753
754 #endif
755
756 #if defined YYCOPY_NEEDED && YYCOPY_NEEDED
757 /* Copy COUNT objects from SRC to DST. The source and destination do
758 not overlap. */
759 # ifndef YYCOPY
760 # if defined __GNUC__ && 1 < __GNUC__
761 # define YYCOPY(Dst, Src, Count) \
762 __builtin_memcpy (Dst, Src, (Count) * sizeof (*(Src)))
763 # else
764 # define YYCOPY(Dst, Src, Count) \
765 do \
766 { \
767 YYSIZE_T yyi; \
768 for (yyi = 0; yyi < (Count); yyi++) \
769 (Dst)[yyi] = (Src)[yyi]; \
770 } \
771 while (0)
772 # endif
773 # endif
774 #endif /* !YYCOPY_NEEDED */
775
776 /* YYFINAL -- State number of the termination state. */
777 #define YYFINAL 117
778 /* YYLAST -- Last index in YYTABLE. */
779 #define YYLAST 669
780
781 /* YYNTOKENS -- Number of terminals. */
782 #define YYNTOKENS 61
783 /* YYNNTS -- Number of nonterminals. */
784 #define YYNNTS 38
785 /* YYNRULES -- Number of rules. */
786 #define YYNRULES 170
787 /* YYNSTATES -- Number of states. */
788 #define YYNSTATES 343
789
790 /* YYTRANSLATE[YYX] -- Symbol number corresponding to YYX as returned
791 by yylex, with out-of-bounds checking. */
792 #define YYUNDEFTOK 2
793 #define YYMAXUTOK 304
794
795 #define YYTRANSLATE(YYX) \
796 ((unsigned int) (YYX) <= YYMAXUTOK ? yytranslate[YYX] : YYUNDEFTOK)
797
798 /* YYTRANSLATE[TOKEN-NUM] -- Symbol number corresponding to TOKEN-NUM
799 as returned by yylex, without out-of-bounds checking. */
800 static const yytype_uint8 yytranslate[] =
801 {
802 0, 2, 2, 2, 2, 2, 2, 2, 2, 2,
803 51, 2, 2, 2, 2, 2, 2, 2, 2, 2,
804 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
805 2, 2, 2, 2, 2, 2, 2, 2, 49, 2,
806 59, 60, 2, 2, 2, 56, 2, 2, 2, 2,
807 2, 2, 2, 2, 2, 2, 2, 2, 2, 50,
808 55, 2, 54, 2, 2, 2, 2, 2, 2, 2,
809 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
810 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
811 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
812 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
813 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
814 2, 2, 2, 57, 53, 58, 2, 2, 2, 2,
815 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
816 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
817 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
818 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
819 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
820 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
821 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
822 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
823 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
824 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
825 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
826 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
827 2, 2, 2, 2, 2, 2, 1, 2, 3, 4,
828 5, 6, 7, 8, 9, 10, 11, 12, 13, 14,
829 15, 16, 17, 18, 19, 20, 21, 22, 23, 24,
830 25, 26, 27, 28, 29, 30, 31, 32, 33, 34,
831 35, 36, 37, 38, 39, 40, 41, 42, 43, 44,
832 45, 46, 47, 48, 52
833 };
834
835 #if YYDEBUG
836 /* YYRLINE[YYN] -- Source line where rule number YYN was defined. */
837 static const yytype_uint16 yyrline[] =
838 {
839 0, 381, 381, 392, 401, 416, 433, 443, 445, 449,
840 455, 461, 467, 473, 479, 485, 491, 497, 503, 509,
841 515, 521, 527, 533, 539, 546, 553, 560, 567, 574,
842 581, 587, 593, 599, 605, 611, 617, 623, 629, 635,
843 641, 647, 653, 659, 665, 671, 677, 683, 689, 695,
844 701, 707, 713, 721, 723, 725, 729, 733, 744, 746,
845 750, 752, 754, 770, 772, 776, 778, 780, 782, 784,
846 786, 788, 790, 792, 794, 796, 800, 805, 810, 815,
847 820, 825, 830, 835, 842, 848, 854, 860, 868, 873,
848 878, 883, 888, 893, 898, 903, 910, 915, 920, 927,
849 930, 933, 937, 939, 970, 977, 982, 999, 1004, 1021,
850 1028, 1030, 1032, 1037, 1041, 1045, 1049, 1051, 1053, 1057,
851 1058, 1062, 1064, 1066, 1068, 1072, 1074, 1076, 1078, 1080,
852 1082, 1086, 1088, 1097, 1105, 1106, 1112, 1113, 1120, 1124,
853 1126, 1128, 1135, 1137, 1139, 1143, 1144, 1147, 1149, 1151,
854 1155, 1156, 1165, 1178, 1194, 1209, 1211, 1213, 1220, 1223,
855 1227, 1229, 1235, 1241, 1261, 1284, 1286, 1309, 1313, 1315,
856 1317
857 };
858 #endif
859
860 #if YYDEBUG || YYERROR_VERBOSE || 0
861 /* YYTNAME[SYMBOL-NUM] -- String name of the symbol SYMBOL-NUM.
862 First, the terminals, then, starting at YYNTOKENS, nonterminals. */
863 static const char *const yytname[] =
864 {
865 "$end", "error", "$undefined", "IF", "THEN", "ELSE", "ELIF", "FI",
866 "CASE", "ESAC", "FOR", "SELECT", "WHILE", "UNTIL", "DO", "DONE",
867 "FUNCTION", "COPROC", "COND_START", "COND_END", "COND_ERROR", "IN",
868 "BANG", "TIME", "TIMEOPT", "TIMEIGN", "WORD", "ASSIGNMENT_WORD",
869 "REDIR_WORD", "NUMBER", "ARITH_CMD", "ARITH_FOR_EXPRS", "COND_CMD",
870 "AND_AND", "OR_OR", "GREATER_GREATER", "LESS_LESS", "LESS_AND",
871 "LESS_LESS_LESS", "GREATER_AND", "SEMI_SEMI", "SEMI_AND",
872 "SEMI_SEMI_AND", "LESS_LESS_MINUS", "AND_GREATER", "AND_GREATER_GREATER",
873 "LESS_GREATER", "GREATER_BAR", "BAR_AND", "'&'", "';'", "'\\n'",
874 "yacc_EOF", "'|'", "'>'", "'<'", "'-'", "'{'", "'}'", "'('", "')'",
875 "$accept", "inputunit", "word_list", "redirection",
876 "simple_command_element", "redirection_list", "simple_command",
877 "command", "shell_command", "for_command", "arith_for_command",
878 "select_command", "case_command", "function_def", "function_body",
879 "subshell", "coproc", "if_command", "group_command", "arith_command",
880 "cond_command", "elif_clause", "case_clause", "pattern_list",
881 "case_clause_sequence", "pattern", "list", "compound_list", "list0",
882 "list1", "simple_list_terminator", "list_terminator", "newline_list",
883 "simple_list", "simple_list1", "pipeline_command", "pipeline",
884 "timespec", YY_NULLPTR
885 };
886 #endif
887
888 # ifdef YYPRINT
889 /* YYTOKNUM[NUM] -- (External) token number corresponding to the
890 (internal) symbol number NUM (which must be that of a token). */
891 static const yytype_uint16 yytoknum[] =
892 {
893 0, 256, 257, 258, 259, 260, 261, 262, 263, 264,
894 265, 266, 267, 268, 269, 270, 271, 272, 273, 274,
895 275, 276, 277, 278, 279, 280, 281, 282, 283, 284,
896 285, 286, 287, 288, 289, 290, 291, 292, 293, 294,
897 295, 296, 297, 298, 299, 300, 301, 302, 303, 38,
898 59, 10, 304, 124, 62, 60, 45, 123, 125, 40,
899 41
900 };
901 # endif
902
903 #define YYPACT_NINF -204
904
905 #define yypact_value_is_default(Yystate) \
906 (!!((Yystate) == (-204)))
907
908 #define YYTABLE_NINF -1
909
910 #define yytable_value_is_error(Yytable_value) \
911 0
912
913 /* YYPACT[STATE-NUM] -- Index in YYTABLE of the portion describing
914 STATE-NUM. */
915 static const yytype_int16 yypact[] =
916 {
917 306, -13, -204, -14, 68, 5, -204, -204, 22, 556,
918 -12, 356, 21, 4, -204, 601, 614, -204, 43, 58,
919 139, 60, 143, 79, 90, 98, 100, 102, -204, -204,
920 104, 111, -204, -204, 154, -204, -204, 234, -204, 588,
921 -204, -204, -204, -204, -204, -204, -204, -204, -204, -204,
922 -204, 70, 192, -204, 65, 356, -204, -204, -204, 135,
923 406, -204, 93, 23, 107, 153, 162, 124, 99, 234,
924 588, 167, -204, -204, -204, -204, -204, 165, 133, 178,
925 206, 144, 210, 145, 213, 225, 229, 232, 233, 238,
926 239, 149, 241, 156, 242, 250, 256, 257, 258, -204,
927 -204, -204, -204, -204, -204, -204, -204, -204, -204, -204,
928 -204, -204, -204, -204, -204, 169, 170, -204, -204, -204,
929 -204, 588, -204, -204, -204, -204, -204, 456, 456, -204,
930 -204, -204, -204, -204, -204, -204, 184, -204, -10, -204,
931 7, -204, -204, -204, -204, 19, -204, -204, 226, 41,
932 588, 588, -204, -204, -204, -204, -204, -204, -204, -204,
933 -204, -204, -204, -204, -204, -204, -204, -204, -204, -204,
934 -204, -204, -204, -204, -204, -204, -204, -204, -204, -204,
935 -204, -204, -204, -204, -204, -204, 406, 406, 147, 147,
936 506, 506, 201, -204, -204, -204, -204, -204, -204, 11,
937 -204, 82, -204, 270, 235, 32, 36, -204, 82, -204,
938 275, 276, -204, 588, -204, 588, 41, -204, -204, 65,
939 65, -204, -204, -204, 285, 406, 406, 406, 406, 406,
940 286, 204, -204, -4, -204, -204, 281, -204, 137, -204,
941 243, -204, -204, -204, -204, -204, -204, 282, 406, 137,
942 -204, 244, -204, -204, 41, 588, -204, 293, 299, -204,
943 -204, -204, 180, 180, 180, -204, -204, -204, -204, 208,
944 6, -204, -204, 278, -30, 295, 253, -204, -204, -204,
945 46, -204, 300, 263, 310, 268, -204, 184, -204, 74,
946 -204, -204, -204, -204, -204, -204, -204, -204, -24, 301,
947 -204, -204, -204, 87, -204, -204, -204, -204, -204, -204,
948 109, -204, -204, 248, -204, -204, -204, 406, -204, -204,
949 315, 273, -204, -204, 322, 280, -204, -204, -204, 406,
950 324, 288, -204, -204, 325, 289, -204, -204, -204, -204,
951 -204, -204, -204
952 };
953
954 /* YYDEFACT[STATE-NUM] -- Default reduction number in state STATE-NUM.
955 Performed when YYTABLE does not specify something else to do. Zero
956 means the default is an error. */
957 static const yytype_uint8 yydefact[] =
958 {
959 0, 0, 150, 0, 0, 0, 150, 150, 0, 0,
960 0, 0, 168, 53, 54, 0, 0, 114, 0, 0,
961 0, 0, 0, 0, 0, 0, 0, 0, 3, 6,
962 0, 0, 150, 150, 0, 55, 58, 60, 167, 61,
963 65, 75, 69, 66, 63, 71, 64, 70, 72, 73,
964 74, 0, 152, 159, 160, 0, 4, 5, 134, 0,
965 0, 150, 150, 0, 150, 0, 0, 150, 53, 109,
966 105, 0, 148, 147, 149, 164, 161, 169, 0, 0,
967 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
968 0, 0, 0, 0, 0, 0, 0, 0, 0, 15,
969 24, 39, 33, 48, 30, 42, 36, 45, 27, 51,
970 52, 21, 18, 9, 10, 0, 0, 1, 53, 59,
971 56, 62, 145, 146, 2, 150, 150, 153, 154, 150,
972 150, 163, 162, 150, 151, 133, 135, 144, 0, 150,
973 0, 150, 150, 150, 150, 0, 150, 150, 0, 0,
974 107, 106, 115, 170, 150, 17, 26, 41, 35, 50,
975 32, 44, 38, 47, 29, 23, 20, 13, 14, 16,
976 25, 40, 34, 49, 31, 43, 37, 46, 28, 22,
977 19, 11, 12, 113, 104, 57, 0, 0, 157, 158,
978 0, 0, 0, 150, 150, 150, 150, 150, 150, 0,
979 150, 0, 150, 0, 0, 0, 0, 150, 0, 150,
980 0, 0, 150, 102, 101, 108, 0, 155, 156, 166,
981 165, 150, 150, 110, 0, 0, 0, 137, 138, 136,
982 0, 119, 150, 0, 150, 150, 0, 7, 0, 150,
983 0, 86, 87, 150, 150, 150, 150, 0, 0, 0,
984 150, 0, 67, 68, 0, 103, 99, 0, 0, 112,
985 139, 140, 141, 142, 143, 98, 125, 127, 129, 120,
986 0, 96, 131, 0, 0, 0, 0, 76, 8, 150,
987 0, 77, 0, 0, 0, 0, 88, 0, 150, 0,
988 89, 100, 111, 150, 126, 128, 130, 97, 0, 0,
989 150, 78, 79, 0, 150, 150, 84, 85, 90, 91,
990 0, 150, 150, 116, 150, 132, 121, 122, 150, 150,
991 0, 0, 150, 150, 0, 0, 150, 118, 123, 124,
992 0, 0, 82, 83, 0, 0, 94, 95, 117, 80,
993 81, 92, 93
994 };
995
996 /* YYPGOTO[NTERM-NUM]. */
997 static const yytype_int16 yypgoto[] =
998 {
999 -204, -204, 140, -36, 35, -60, 345, -204, -7, -204,
1000 -204, -204, -204, -204, -198, -204, -204, -204, -204, -204,
1001 -204, 42, -204, 130, -204, 83, -203, -6, -204, -5,
1002 -204, -46, -48, -204, -120, 24, 66, -204
1003 };
1004
1005 /* YYDEFGOTO[NTERM-NUM]. */
1006 static const yytype_int16 yydefgoto[] =
1007 {
1008 -1, 34, 238, 35, 36, 121, 37, 38, 39, 40,
1009 41, 42, 43, 44, 214, 45, 46, 47, 48, 49,
1010 50, 224, 230, 231, 232, 274, 58, 59, 135, 136,
1011 124, 75, 60, 51, 52, 137, 54, 55
1012 };
1013
1014 /* YYTABLE[YYPACT[STATE-NUM]] -- What to do in state STATE-NUM. If
1015 positive, shift that token. If negative, reduce the rule whose
1016 number is the opposite. If YYTABLE_NINF, syntax error. */
1017 static const yytype_uint16 yytable[] =
1018 {
1019 65, 66, 70, 120, 247, 271, 251, 188, 189, 131,
1020 151, 198, 61, 138, 140, 297, 145, 143, 256, 149,
1021 71, 200, 272, 299, 53, 234, 115, 116, 201, 299,
1022 300, 64, 272, 207, 120, 76, 314, 141, 56, 57,
1023 208, 134, 284, 285, 2, 77, 243, 134, 67, 3,
1024 245, 4, 5, 6, 7, 273, 291, 134, 134, 10,
1025 304, 150, 134, 78, 202, 273, 217, 218, 235, 99,
1026 134, 17, 119, 72, 73, 74, 209, 186, 187, 132,
1027 142, 190, 191, 134, 100, 185, 104, 134, 311, 244,
1028 215, 199, 134, 246, 62, 205, 206, 134, 32, 63,
1029 33, 318, 2, 305, 119, 108, 216, 3, 237, 4,
1030 5, 6, 7, 129, 120, 185, 109, 10, 130, 334,
1031 335, 122, 123, 322, 110, 134, 111, 192, 112, 17,
1032 113, 312, 72, 73, 74, 203, 204, 114, 134, 133,
1033 210, 211, 213, 139, 319, 225, 226, 227, 228, 229,
1034 233, 53, 53, 255, 117, 239, 32, 144, 33, 248,
1035 134, 248, 250, 278, 254, 101, 323, 146, 102, 105,
1036 157, 161, 106, 158, 162, 171, 147, 120, 172, 185,
1037 125, 126, 175, 148, 270, 176, 152, 72, 73, 74,
1038 153, 280, 279, 154, 236, 103, 240, 248, 248, 107,
1039 159, 163, 289, 288, 155, 173, 221, 222, 223, 213,
1040 53, 53, 177, 193, 194, 257, 258, 193, 194, 185,
1041 260, 261, 262, 263, 264, 125, 126, 183, 275, 276,
1042 184, 303, 156, 195, 196, 197, 160, 282, 283, 164,
1043 310, 127, 128, 287, 266, 267, 268, 213, 294, 295,
1044 296, 165, 317, 326, 222, 166, 219, 220, 167, 168,
1045 118, 14, 15, 16, 169, 170, 329, 174, 178, 18,
1046 19, 20, 21, 22, 248, 248, 179, 23, 24, 25,
1047 26, 27, 180, 181, 182, 241, 212, 313, 30, 31,
1048 252, 253, 259, 242, 316, 265, 277, 286, 320, 321,
1049 292, 281, 290, 293, 272, 324, 325, 1, 328, 2,
1050 301, 302, 330, 331, 3, 306, 4, 5, 6, 7,
1051 338, 307, 8, 9, 10, 308, 309, 315, 11, 12,
1052 332, 333, 13, 14, 15, 16, 17, 336, 337, 339,
1053 341, 18, 19, 20, 21, 22, 340, 342, 249, 23,
1054 24, 25, 26, 27, 69, 327, 298, 28, 29, 2,
1055 30, 31, 269, 32, 3, 33, 4, 5, 6, 7,
1056 0, 0, 8, 9, 10, 0, 0, 0, 11, 12,
1057 0, 0, 13, 14, 15, 16, 17, 0, 0, 0,
1058 0, 18, 19, 20, 21, 22, 0, 0, 0, 23,
1059 24, 25, 26, 27, 0, 0, 72, 73, 74, 2,
1060 30, 31, 0, 32, 3, 33, 4, 5, 6, 7,
1061 0, 0, 8, 9, 10, 0, 0, 0, 11, 12,
1062 0, 0, 13, 14, 15, 16, 17, 0, 0, 0,
1063 0, 18, 19, 20, 21, 22, 0, 0, 0, 23,
1064 24, 25, 26, 27, 0, 0, 0, 134, 0, 2,
1065 30, 31, 0, 32, 3, 33, 4, 5, 6, 7,
1066 0, 0, 8, 9, 10, 0, 0, 0, 11, 12,
1067 0, 0, 13, 14, 15, 16, 17, 0, 0, 0,
1068 0, 18, 19, 20, 21, 22, 0, 0, 0, 23,
1069 24, 25, 26, 27, 0, 0, 0, 0, 0, 2,
1070 30, 31, 0, 32, 3, 33, 4, 5, 6, 7,
1071 0, 0, 8, 9, 10, 0, 0, 0, 0, 0,
1072 0, 0, 13, 14, 15, 16, 17, 0, 0, 0,
1073 0, 18, 19, 20, 21, 22, 0, 0, 0, 23,
1074 24, 25, 26, 27, 0, 0, 0, 134, 0, 2,
1075 30, 31, 0, 32, 3, 33, 4, 5, 6, 7,
1076 0, 0, 0, 0, 10, 0, 0, 0, 0, 0,
1077 0, 0, 68, 14, 15, 16, 17, 0, 0, 0,
1078 0, 18, 19, 20, 21, 22, 0, 0, 0, 23,
1079 24, 25, 26, 27, 0, 0, 0, 0, 0, 0,
1080 30, 31, 0, 32, 0, 33, 15, 16, 0, 0,
1081 0, 0, 0, 18, 19, 20, 21, 22, 0, 0,
1082 0, 23, 24, 25, 26, 27, 79, 80, 81, 82,
1083 83, 0, 30, 31, 84, 0, 0, 85, 86, 89,
1084 90, 91, 92, 93, 0, 87, 88, 94, 0, 0,
1085 95, 96, 0, 0, 0, 0, 0, 0, 97, 98
1086 };
1087
1088 static const yytype_int16 yycheck[] =
1089 {
1090 6, 7, 9, 39, 207, 9, 209, 127, 128, 55,
1091 70, 21, 26, 61, 62, 9, 64, 63, 216, 67,
1092 32, 14, 26, 53, 0, 14, 32, 33, 21, 53,
1093 60, 26, 26, 14, 70, 11, 60, 14, 51, 52,
1094 21, 51, 245, 246, 3, 24, 14, 51, 26, 8,
1095 14, 10, 11, 12, 13, 59, 254, 51, 51, 18,
1096 14, 68, 51, 59, 57, 59, 186, 187, 57, 26,
1097 51, 30, 37, 50, 51, 52, 57, 125, 126, 55,
1098 57, 129, 130, 51, 26, 121, 26, 51, 14, 57,
1099 150, 139, 51, 57, 26, 143, 144, 51, 57, 31,
1100 59, 14, 3, 57, 69, 26, 154, 8, 26, 10,
1101 11, 12, 13, 48, 150, 151, 26, 18, 53, 322,
1102 323, 51, 52, 14, 26, 51, 26, 133, 26, 30,
1103 26, 57, 50, 51, 52, 141, 142, 26, 51, 4,
1104 146, 147, 149, 50, 57, 193, 194, 195, 196, 197,
1105 198, 127, 128, 213, 0, 201, 57, 50, 59, 207,
1106 51, 209, 208, 26, 212, 26, 57, 14, 29, 26,
1107 26, 26, 29, 29, 29, 26, 14, 213, 29, 215,
1108 33, 34, 26, 59, 232, 29, 19, 50, 51, 52,
1109 25, 239, 238, 60, 200, 56, 202, 245, 246, 56,
1110 56, 56, 250, 249, 26, 56, 5, 6, 7, 216,
1111 186, 187, 56, 33, 34, 221, 222, 33, 34, 255,
1112 225, 226, 227, 228, 229, 33, 34, 58, 234, 235,
1113 60, 279, 26, 49, 50, 51, 26, 243, 244, 26,
1114 288, 49, 50, 248, 40, 41, 42, 254, 40, 41,
1115 42, 26, 300, 5, 6, 26, 190, 191, 26, 26,
1116 26, 27, 28, 29, 26, 26, 314, 26, 26, 35,
1117 36, 37, 38, 39, 322, 323, 26, 43, 44, 45,
1118 46, 47, 26, 26, 26, 15, 60, 293, 54, 55,
1119 15, 15, 7, 58, 300, 9, 15, 15, 304, 305,
1120 7, 58, 58, 4, 26, 311, 312, 1, 314, 3,
1121 15, 58, 318, 319, 8, 15, 10, 11, 12, 13,
1122 326, 58, 16, 17, 18, 15, 58, 26, 22, 23,
1123 15, 58, 26, 27, 28, 29, 30, 15, 58, 15,
1124 15, 35, 36, 37, 38, 39, 58, 58, 208, 43,
1125 44, 45, 46, 47, 9, 313, 273, 51, 52, 3,
1126 54, 55, 232, 57, 8, 59, 10, 11, 12, 13,
1127 -1, -1, 16, 17, 18, -1, -1, -1, 22, 23,
1128 -1, -1, 26, 27, 28, 29, 30, -1, -1, -1,
1129 -1, 35, 36, 37, 38, 39, -1, -1, -1, 43,
1130 44, 45, 46, 47, -1, -1, 50, 51, 52, 3,
1131 54, 55, -1, 57, 8, 59, 10, 11, 12, 13,
1132 -1, -1, 16, 17, 18, -1, -1, -1, 22, 23,
1133 -1, -1, 26, 27, 28, 29, 30, -1, -1, -1,
1134 -1, 35, 36, 37, 38, 39, -1, -1, -1, 43,
1135 44, 45, 46, 47, -1, -1, -1, 51, -1, 3,
1136 54, 55, -1, 57, 8, 59, 10, 11, 12, 13,
1137 -1, -1, 16, 17, 18, -1, -1, -1, 22, 23,
1138 -1, -1, 26, 27, 28, 29, 30, -1, -1, -1,
1139 -1, 35, 36, 37, 38, 39, -1, -1, -1, 43,
1140 44, 45, 46, 47, -1, -1, -1, -1, -1, 3,
1141 54, 55, -1, 57, 8, 59, 10, 11, 12, 13,
1142 -1, -1, 16, 17, 18, -1, -1, -1, -1, -1,
1143 -1, -1, 26, 27, 28, 29, 30, -1, -1, -1,
1144 -1, 35, 36, 37, 38, 39, -1, -1, -1, 43,
1145 44, 45, 46, 47, -1, -1, -1, 51, -1, 3,
1146 54, 55, -1, 57, 8, 59, 10, 11, 12, 13,
1147 -1, -1, -1, -1, 18, -1, -1, -1, -1, -1,
1148 -1, -1, 26, 27, 28, 29, 30, -1, -1, -1,
1149 -1, 35, 36, 37, 38, 39, -1, -1, -1, 43,
1150 44, 45, 46, 47, -1, -1, -1, -1, -1, -1,
1151 54, 55, -1, 57, -1, 59, 28, 29, -1, -1,
1152 -1, -1, -1, 35, 36, 37, 38, 39, -1, -1,
1153 -1, 43, 44, 45, 46, 47, 35, 36, 37, 38,
1154 39, -1, 54, 55, 43, -1, -1, 46, 47, 35,
1155 36, 37, 38, 39, -1, 54, 55, 43, -1, -1,
1156 46, 47, -1, -1, -1, -1, -1, -1, 54, 55
1157 };
1158
1159 /* YYSTOS[STATE-NUM] -- The (internal number of the) accessing
1160 symbol of state STATE-NUM. */
1161 static const yytype_uint8 yystos[] =
1162 {
1163 0, 1, 3, 8, 10, 11, 12, 13, 16, 17,
1164 18, 22, 23, 26, 27, 28, 29, 30, 35, 36,
1165 37, 38, 39, 43, 44, 45, 46, 47, 51, 52,
1166 54, 55, 57, 59, 62, 64, 65, 67, 68, 69,
1167 70, 71, 72, 73, 74, 76, 77, 78, 79, 80,
1168 81, 94, 95, 96, 97, 98, 51, 52, 87, 88,
1169 93, 26, 26, 31, 26, 88, 88, 26, 26, 67,
1170 69, 32, 50, 51, 52, 92, 96, 24, 59, 35,
1171 36, 37, 38, 39, 43, 46, 47, 54, 55, 35,
1172 36, 37, 38, 39, 43, 46, 47, 54, 55, 26,
1173 26, 26, 29, 56, 26, 26, 29, 56, 26, 26,
1174 26, 26, 26, 26, 26, 88, 88, 0, 26, 65,
1175 64, 66, 51, 52, 91, 33, 34, 49, 50, 48,
1176 53, 92, 96, 4, 51, 89, 90, 96, 93, 50,
1177 93, 14, 57, 92, 50, 93, 14, 14, 59, 93,
1178 69, 66, 19, 25, 60, 26, 26, 26, 29, 56,
1179 26, 26, 29, 56, 26, 26, 26, 26, 26, 26,
1180 26, 26, 29, 56, 26, 26, 29, 56, 26, 26,
1181 26, 26, 26, 58, 60, 64, 93, 93, 95, 95,
1182 93, 93, 88, 33, 34, 49, 50, 51, 21, 93,
1183 14, 21, 57, 88, 88, 93, 93, 14, 21, 57,
1184 88, 88, 60, 69, 75, 66, 93, 95, 95, 97,
1185 97, 5, 6, 7, 82, 93, 93, 93, 93, 93,
1186 83, 84, 85, 93, 14, 57, 88, 26, 63, 92,
1187 88, 15, 58, 14, 57, 14, 57, 87, 93, 63,
1188 92, 87, 15, 15, 93, 66, 75, 88, 88, 7,
1189 90, 90, 90, 90, 90, 9, 40, 41, 42, 84,
1190 93, 9, 26, 59, 86, 88, 88, 15, 26, 92,
1191 93, 58, 88, 88, 87, 87, 15, 90, 92, 93,
1192 58, 75, 7, 4, 40, 41, 42, 9, 86, 53,
1193 60, 15, 58, 93, 14, 57, 15, 58, 15, 58,
1194 93, 14, 57, 88, 60, 26, 88, 93, 14, 57,
1195 88, 88, 14, 57, 88, 88, 5, 82, 88, 93,
1196 88, 88, 15, 58, 87, 87, 15, 58, 88, 15,
1197 58, 15, 58
1198 };
1199
1200 /* YYR1[YYN] -- Symbol number of symbol that rule YYN derives. */
1201 static const yytype_uint8 yyr1[] =
1202 {
1203 0, 61, 62, 62, 62, 62, 62, 63, 63, 64,
1204 64, 64, 64, 64, 64, 64, 64, 64, 64, 64,
1205 64, 64, 64, 64, 64, 64, 64, 64, 64, 64,
1206 64, 64, 64, 64, 64, 64, 64, 64, 64, 64,
1207 64, 64, 64, 64, 64, 64, 64, 64, 64, 64,
1208 64, 64, 64, 65, 65, 65, 66, 66, 67, 67,
1209 68, 68, 68, 68, 68, 69, 69, 69, 69, 69,
1210 69, 69, 69, 69, 69, 69, 70, 70, 70, 70,
1211 70, 70, 70, 70, 71, 71, 71, 71, 72, 72,
1212 72, 72, 72, 72, 72, 72, 73, 73, 73, 74,
1213 74, 74, 75, 75, 76, 77, 77, 77, 77, 77,
1214 78, 78, 78, 79, 80, 81, 82, 82, 82, 83,
1215 83, 84, 84, 84, 84, 85, 85, 85, 85, 85,
1216 85, 86, 86, 87, 88, 88, 89, 89, 89, 90,
1217 90, 90, 90, 90, 90, 91, 91, 92, 92, 92,
1218 93, 93, 94, 94, 94, 95, 95, 95, 95, 95,
1219 96, 96, 96, 96, 96, 97, 97, 97, 98, 98,
1220 98
1221 };
1222
1223 /* YYR2[YYN] -- Number of symbols on the right hand side of rule YYN. */
1224 static const yytype_uint8 yyr2[] =
1225 {
1226 0, 2, 2, 1, 2, 2, 1, 1, 2, 2,
1227 2, 3, 3, 3, 3, 2, 3, 3, 2, 3,
1228 3, 2, 3, 3, 2, 3, 3, 2, 3, 3,
1229 2, 3, 3, 2, 3, 3, 2, 3, 3, 2,
1230 3, 3, 2, 3, 3, 2, 3, 3, 2, 3,
1231 3, 2, 2, 1, 1, 1, 1, 2, 1, 2,
1232 1, 1, 2, 1, 1, 1, 1, 5, 5, 1,
1233 1, 1, 1, 1, 1, 1, 6, 6, 7, 7,
1234 10, 10, 9, 9, 7, 7, 5, 5, 6, 6,
1235 7, 7, 10, 10, 9, 9, 6, 7, 6, 5,
1236 6, 4, 1, 2, 3, 2, 3, 3, 4, 2,
1237 5, 7, 6, 3, 1, 3, 4, 6, 5, 1,
1238 2, 4, 4, 5, 5, 2, 3, 2, 3, 2,
1239 3, 1, 3, 2, 1, 2, 3, 3, 3, 4,
1240 4, 4, 4, 4, 1, 1, 1, 1, 1, 1,
1241 0, 2, 1, 2, 2, 4, 4, 3, 3, 1,
1242 1, 2, 2, 2, 2, 4, 4, 1, 1, 2,
1243 3
1244 };
1245
1246
1247 #define yyerrok (yyerrstatus = 0)
1248 #define yyclearin (yychar = YYEMPTY)
1249 #define YYEMPTY (-2)
1250 #define YYEOF 0
1251
1252 #define YYACCEPT goto yyacceptlab
1253 #define YYABORT goto yyabortlab
1254 #define YYERROR goto yyerrorlab
1255
1256
1257 #define YYRECOVERING() (!!yyerrstatus)
1258
1259 #define YYBACKUP(Token, Value) \
1260 do \
1261 if (yychar == YYEMPTY) \
1262 { \
1263 yychar = (Token); \
1264 yylval = (Value); \
1265 YYPOPSTACK (yylen); \
1266 yystate = *yyssp; \
1267 goto yybackup; \
1268 } \
1269 else \
1270 { \
1271 yyerror (YY_("syntax error: cannot back up")); \
1272 YYERROR; \
1273 } \
1274 while (0)
1275
1276 /* Error token number */
1277 #define YYTERROR 1
1278 #define YYERRCODE 256
1279
1280
1281
1282 /* Enable debugging if requested. */
1283 #if YYDEBUG
1284
1285 # ifndef YYFPRINTF
1286 # include <stdio.h> /* INFRINGES ON USER NAME SPACE */
1287 # define YYFPRINTF fprintf
1288 # endif
1289
1290 # define YYDPRINTF(Args) \
1291 do { \
1292 if (yydebug) \
1293 YYFPRINTF Args; \
1294 } while (0)
1295
1296 /* This macro is provided for backward compatibility. */
1297 #ifndef YY_LOCATION_PRINT
1298 # define YY_LOCATION_PRINT(File, Loc) ((void) 0)
1299 #endif
1300
1301
1302 # define YY_SYMBOL_PRINT(Title, Type, Value, Location) \
1303 do { \
1304 if (yydebug) \
1305 { \
1306 YYFPRINTF (stderr, "%s ", Title); \
1307 yy_symbol_print (stderr, \
1308 Type, Value); \
1309 YYFPRINTF (stderr, "\n"); \
1310 } \
1311 } while (0)
1312
1313
1314 /*----------------------------------------.
1315 | Print this symbol's value on YYOUTPUT. |
1316 `----------------------------------------*/
1317
1318 static void
1319 yy_symbol_value_print (FILE *yyoutput, int yytype, YYSTYPE const * const yyvaluep)
1320 {
1321 FILE *yyo = yyoutput;
1322 YYUSE (yyo);
1323 if (!yyvaluep)
1324 return;
1325 # ifdef YYPRINT
1326 if (yytype < YYNTOKENS)
1327 YYPRINT (yyoutput, yytoknum[yytype], *yyvaluep);
1328 # endif
1329 YYUSE (yytype);
1330 }
1331
1332
1333 /*--------------------------------.
1334 | Print this symbol on YYOUTPUT. |
1335 `--------------------------------*/
1336
1337 static void
1338 yy_symbol_print (FILE *yyoutput, int yytype, YYSTYPE const * const yyvaluep)
1339 {
1340 YYFPRINTF (yyoutput, "%s %s (",
1341 yytype < YYNTOKENS ? "token" : "nterm", yytname[yytype]);
1342
1343 yy_symbol_value_print (yyoutput, yytype, yyvaluep);
1344 YYFPRINTF (yyoutput, ")");
1345 }
1346
1347 /*------------------------------------------------------------------.
1348 | yy_stack_print -- Print the state stack from its BOTTOM up to its |
1349 | TOP (included). |
1350 `------------------------------------------------------------------*/
1351
1352 static void
1353 yy_stack_print (yytype_int16 *yybottom, yytype_int16 *yytop)
1354 {
1355 YYFPRINTF (stderr, "Stack now");
1356 for (; yybottom <= yytop; yybottom++)
1357 {
1358 int yybot = *yybottom;
1359 YYFPRINTF (stderr, " %d", yybot);
1360 }
1361 YYFPRINTF (stderr, "\n");
1362 }
1363
1364 # define YY_STACK_PRINT(Bottom, Top) \
1365 do { \
1366 if (yydebug) \
1367 yy_stack_print ((Bottom), (Top)); \
1368 } while (0)
1369
1370
1371 /*------------------------------------------------.
1372 | Report that the YYRULE is going to be reduced. |
1373 `------------------------------------------------*/
1374
1375 static void
1376 yy_reduce_print (yytype_int16 *yyssp, YYSTYPE *yyvsp, int yyrule)
1377 {
1378 unsigned long int yylno = yyrline[yyrule];
1379 int yynrhs = yyr2[yyrule];
1380 int yyi;
1381 YYFPRINTF (stderr, "Reducing stack by rule %d (line %lu):\n",
1382 yyrule - 1, yylno);
1383 /* The symbols being reduced. */
1384 for (yyi = 0; yyi < yynrhs; yyi++)
1385 {
1386 YYFPRINTF (stderr, " $%d = ", yyi + 1);
1387 yy_symbol_print (stderr,
1388 yystos[yyssp[yyi + 1 - yynrhs]],
1389 &(yyvsp[(yyi + 1) - (yynrhs)])
1390 );
1391 YYFPRINTF (stderr, "\n");
1392 }
1393 }
1394
1395 # define YY_REDUCE_PRINT(Rule) \
1396 do { \
1397 if (yydebug) \
1398 yy_reduce_print (yyssp, yyvsp, Rule); \
1399 } while (0)
1400
1401 /* Nonzero means print parse trace. It is left uninitialized so that
1402 multiple parsers can coexist. */
1403 int yydebug;
1404 #else /* !YYDEBUG */
1405 # define YYDPRINTF(Args)
1406 # define YY_SYMBOL_PRINT(Title, Type, Value, Location)
1407 # define YY_STACK_PRINT(Bottom, Top)
1408 # define YY_REDUCE_PRINT(Rule)
1409 #endif /* !YYDEBUG */
1410
1411
1412 /* YYINITDEPTH -- initial size of the parser's stacks. */
1413 #ifndef YYINITDEPTH
1414 # define YYINITDEPTH 200
1415 #endif
1416
1417 /* YYMAXDEPTH -- maximum size the stacks can grow to (effective only
1418 if the built-in stack extension method is used).
1419
1420 Do not make this value too large; the results are undefined if
1421 YYSTACK_ALLOC_MAXIMUM < YYSTACK_BYTES (YYMAXDEPTH)
1422 evaluated with infinite-precision integer arithmetic. */
1423
1424 #ifndef YYMAXDEPTH
1425 # define YYMAXDEPTH 10000
1426 #endif
1427
1428
1429 #if YYERROR_VERBOSE
1430
1431 # ifndef yystrlen
1432 # if defined __GLIBC__ && defined _STRING_H
1433 # define yystrlen strlen
1434 # else
1435 /* Return the length of YYSTR. */
1436 static YYSIZE_T
1437 yystrlen (const char *yystr)
1438 {
1439 YYSIZE_T yylen;
1440 for (yylen = 0; yystr[yylen]; yylen++)
1441 continue;
1442 return yylen;
1443 }
1444 # endif
1445 # endif
1446
1447 # ifndef yystpcpy
1448 # if defined __GLIBC__ && defined _STRING_H && defined _GNU_SOURCE
1449 # define yystpcpy stpcpy
1450 # else
1451 /* Copy YYSRC to YYDEST, returning the address of the terminating '\0' in
1452 YYDEST. */
1453 static char *
1454 yystpcpy (char *yydest, const char *yysrc)
1455 {
1456 char *yyd = yydest;
1457 const char *yys = yysrc;
1458
1459 while ((*yyd++ = *yys++) != '\0')
1460 continue;
1461
1462 return yyd - 1;
1463 }
1464 # endif
1465 # endif
1466
1467 # ifndef yytnamerr
1468 /* Copy to YYRES the contents of YYSTR after stripping away unnecessary
1469 quotes and backslashes, so that it's suitable for yyerror. The
1470 heuristic is that double-quoting is unnecessary unless the string
1471 contains an apostrophe, a comma, or backslash (other than
1472 backslash-backslash). YYSTR is taken from yytname. If YYRES is
1473 null, do not copy; instead, return the length of what the result
1474 would have been. */
1475 static YYSIZE_T
1476 yytnamerr (char *yyres, const char *yystr)
1477 {
1478 if (*yystr == '"')
1479 {
1480 YYSIZE_T yyn = 0;
1481 char const *yyp = yystr;
1482
1483 for (;;)
1484 switch (*++yyp)
1485 {
1486 case '\'':
1487 case ',':
1488 goto do_not_strip_quotes;
1489
1490 case '\\':
1491 if (*++yyp != '\\')
1492 goto do_not_strip_quotes;
1493 /* Fall through. */
1494 default:
1495 if (yyres)
1496 yyres[yyn] = *yyp;
1497 yyn++;
1498 break;
1499
1500 case '"':
1501 if (yyres)
1502 yyres[yyn] = '\0';
1503 return yyn;
1504 }
1505 do_not_strip_quotes: ;
1506 }
1507
1508 if (! yyres)
1509 return yystrlen (yystr);
1510
1511 return yystpcpy (yyres, yystr) - yyres;
1512 }
1513 # endif
1514
1515 /* Copy into *YYMSG, which is of size *YYMSG_ALLOC, an error message
1516 about the unexpected token YYTOKEN for the state stack whose top is
1517 YYSSP.
1518
1519 Return 0 if *YYMSG was successfully written. Return 1 if *YYMSG is
1520 not large enough to hold the message. In that case, also set
1521 *YYMSG_ALLOC to the required number of bytes. Return 2 if the
1522 required number of bytes is too large to store. */
1523 static int
1524 yysyntax_error (YYSIZE_T *yymsg_alloc, char **yymsg,
1525 yytype_int16 *yyssp, int yytoken)
1526 {
1527 YYSIZE_T yysize0 = yytnamerr (YY_NULLPTR, yytname[yytoken]);
1528 YYSIZE_T yysize = yysize0;
1529 enum { YYERROR_VERBOSE_ARGS_MAXIMUM = 5 };
1530 /* Internationalized format string. */
1531 const char *yyformat = YY_NULLPTR;
1532 /* Arguments of yyformat. */
1533 char const *yyarg[YYERROR_VERBOSE_ARGS_MAXIMUM];
1534 /* Number of reported tokens (one for the "unexpected", one per
1535 "expected"). */
1536 int yycount = 0;
1537
1538 /* There are many possibilities here to consider:
1539 - If this state is a consistent state with a default action, then
1540 the only way this function was invoked is if the default action
1541 is an error action. In that case, don't check for expected
1542 tokens because there are none.
1543 - The only way there can be no lookahead present (in yychar) is if
1544 this state is a consistent state with a default action. Thus,
1545 detecting the absence of a lookahead is sufficient to determine
1546 that there is no unexpected or expected token to report. In that
1547 case, just report a simple "syntax error".
1548 - Don't assume there isn't a lookahead just because this state is a
1549 consistent state with a default action. There might have been a
1550 previous inconsistent state, consistent state with a non-default
1551 action, or user semantic action that manipulated yychar.
1552 - Of course, the expected token list depends on states to have
1553 correct lookahead information, and it depends on the parser not
1554 to perform extra reductions after fetching a lookahead from the
1555 scanner and before detecting a syntax error. Thus, state merging
1556 (from LALR or IELR) and default reductions corrupt the expected
1557 token list. However, the list is correct for canonical LR with
1558 one exception: it will still contain any token that will not be
1559 accepted due to an error action in a later state.
1560 */
1561 if (yytoken != YYEMPTY)
1562 {
1563 int yyn = yypact[*yyssp];
1564 yyarg[yycount++] = yytname[yytoken];
1565 if (!yypact_value_is_default (yyn))
1566 {
1567 /* Start YYX at -YYN if negative to avoid negative indexes in
1568 YYCHECK. In other words, skip the first -YYN actions for
1569 this state because they are default actions. */
1570 int yyxbegin = yyn < 0 ? -yyn : 0;
1571 /* Stay within bounds of both yycheck and yytname. */
1572 int yychecklim = YYLAST - yyn + 1;
1573 int yyxend = yychecklim < YYNTOKENS ? yychecklim : YYNTOKENS;
1574 int yyx;
1575
1576 for (yyx = yyxbegin; yyx < yyxend; ++yyx)
1577 if (yycheck[yyx + yyn] == yyx && yyx != YYTERROR
1578 && !yytable_value_is_error (yytable[yyx + yyn]))
1579 {
1580 if (yycount == YYERROR_VERBOSE_ARGS_MAXIMUM)
1581 {
1582 yycount = 1;
1583 yysize = yysize0;
1584 break;
1585 }
1586 yyarg[yycount++] = yytname[yyx];
1587 {
1588 YYSIZE_T yysize1 = yysize + yytnamerr (YY_NULLPTR, yytname[yyx]);
1589 if (! (yysize <= yysize1
1590 && yysize1 <= YYSTACK_ALLOC_MAXIMUM))
1591 return 2;
1592 yysize = yysize1;
1593 }
1594 }
1595 }
1596 }
1597
1598 switch (yycount)
1599 {
1600 # define YYCASE_(N, S) \
1601 case N: \
1602 yyformat = S; \
1603 break
1604 default: /* Avoid compiler warnings. */
1605 YYCASE_(0, YY_("syntax error"));
1606 YYCASE_(1, YY_("syntax error, unexpected %s"));
1607 YYCASE_(2, YY_("syntax error, unexpected %s, expecting %s"));
1608 YYCASE_(3, YY_("syntax error, unexpected %s, expecting %s or %s"));
1609 YYCASE_(4, YY_("syntax error, unexpected %s, expecting %s or %s or %s"));
1610 YYCASE_(5, YY_("syntax error, unexpected %s, expecting %s or %s or %s or %s"));
1611 # undef YYCASE_
1612 }
1613
1614 {
1615 YYSIZE_T yysize1 = yysize + yystrlen (yyformat);
1616 if (! (yysize <= yysize1 && yysize1 <= YYSTACK_ALLOC_MAXIMUM))
1617 return 2;
1618 yysize = yysize1;
1619 }
1620
1621 if (*yymsg_alloc < yysize)
1622 {
1623 *yymsg_alloc = 2 * yysize;
1624 if (! (yysize <= *yymsg_alloc
1625 && *yymsg_alloc <= YYSTACK_ALLOC_MAXIMUM))
1626 *yymsg_alloc = YYSTACK_ALLOC_MAXIMUM;
1627 return 1;
1628 }
1629
1630 /* Avoid sprintf, as that infringes on the user's name space.
1631 Don't have undefined behavior even if the translation
1632 produced a string with the wrong number of "%s"s. */
1633 {
1634 char *yyp = *yymsg;
1635 int yyi = 0;
1636 while ((*yyp = *yyformat) != '\0')
1637 if (*yyp == '%' && yyformat[1] == 's' && yyi < yycount)
1638 {
1639 yyp += yytnamerr (yyp, yyarg[yyi++]);
1640 yyformat += 2;
1641 }
1642 else
1643 {
1644 yyp++;
1645 yyformat++;
1646 }
1647 }
1648 return 0;
1649 }
1650 #endif /* YYERROR_VERBOSE */
1651
1652 /*-----------------------------------------------.
1653 | Release the memory associated to this symbol. |
1654 `-----------------------------------------------*/
1655
1656 static void
1657 yydestruct (const char *yymsg, int yytype, YYSTYPE *yyvaluep)
1658 {
1659 YYUSE (yyvaluep);
1660 if (!yymsg)
1661 yymsg = "Deleting";
1662 YY_SYMBOL_PRINT (yymsg, yytype, yyvaluep, yylocationp);
1663
1664 YY_IGNORE_MAYBE_UNINITIALIZED_BEGIN
1665 YYUSE (yytype);
1666 YY_IGNORE_MAYBE_UNINITIALIZED_END
1667 }
1668
1669
1670
1671
1672 /* The lookahead symbol. */
1673 int yychar;
1674
1675 /* The semantic value of the lookahead symbol. */
1676 YYSTYPE yylval;
1677 /* Number of syntax errors so far. */
1678 int yynerrs;
1679
1680
1681 /*----------.
1682 | yyparse. |
1683 `----------*/
1684
1685 int
1686 yyparse (void)
1687 {
1688 int yystate;
1689 /* Number of tokens to shift before error messages enabled. */
1690 int yyerrstatus;
1691
1692 /* The stacks and their tools:
1693 'yyss': related to states.
1694 'yyvs': related to semantic values.
1695
1696 Refer to the stacks through separate pointers, to allow yyoverflow
1697 to reallocate them elsewhere. */
1698
1699 /* The state stack. */
1700 yytype_int16 yyssa[YYINITDEPTH];
1701 yytype_int16 *yyss;
1702 yytype_int16 *yyssp;
1703
1704 /* The semantic value stack. */
1705 YYSTYPE yyvsa[YYINITDEPTH];
1706 YYSTYPE *yyvs;
1707 YYSTYPE *yyvsp;
1708
1709 YYSIZE_T yystacksize;
1710
1711 int yyn;
1712 int yyresult;
1713 /* Lookahead token as an internal (translated) token number. */
1714 int yytoken = 0;
1715 /* The variables used to return semantic value and location from the
1716 action routines. */
1717 YYSTYPE yyval;
1718
1719 #if YYERROR_VERBOSE
1720 /* Buffer for error messages, and its allocated size. */
1721 char yymsgbuf[128];
1722 char *yymsg = yymsgbuf;
1723 YYSIZE_T yymsg_alloc = sizeof yymsgbuf;
1724 #endif
1725
1726 #define YYPOPSTACK(N) (yyvsp -= (N), yyssp -= (N))
1727
1728 /* The number of symbols on the RHS of the reduced rule.
1729 Keep to zero when no symbol should be popped. */
1730 int yylen = 0;
1731
1732 yyssp = yyss = yyssa;
1733 yyvsp = yyvs = yyvsa;
1734 yystacksize = YYINITDEPTH;
1735
1736 YYDPRINTF ((stderr, "Starting parse\n"));
1737
1738 yystate = 0;
1739 yyerrstatus = 0;
1740 yynerrs = 0;
1741 yychar = YYEMPTY; /* Cause a token to be read. */
1742 goto yysetstate;
1743
1744 /*------------------------------------------------------------.
1745 | yynewstate -- Push a new state, which is found in yystate. |
1746 `------------------------------------------------------------*/
1747 yynewstate:
1748 /* In all cases, when you get here, the value and location stacks
1749 have just been pushed. So pushing a state here evens the stacks. */
1750 yyssp++;
1751
1752 yysetstate:
1753 *yyssp = yystate;
1754
1755 if (yyss + yystacksize - 1 <= yyssp)
1756 {
1757 /* Get the current used size of the three stacks, in elements. */
1758 YYSIZE_T yysize = yyssp - yyss + 1;
1759
1760 #ifdef yyoverflow
1761 {
1762 /* Give user a chance to reallocate the stack. Use copies of
1763 these so that the &'s don't force the real ones into
1764 memory. */
1765 YYSTYPE *yyvs1 = yyvs;
1766 yytype_int16 *yyss1 = yyss;
1767
1768 /* Each stack pointer address is followed by the size of the
1769 data in use in that stack, in bytes. This used to be a
1770 conditional around just the two extra args, but that might
1771 be undefined if yyoverflow is a macro. */
1772 yyoverflow (YY_("memory exhausted"),
1773 &yyss1, yysize * sizeof (*yyssp),
1774 &yyvs1, yysize * sizeof (*yyvsp),
1775 &yystacksize);
1776
1777 yyss = yyss1;
1778 yyvs = yyvs1;
1779 }
1780 #else /* no yyoverflow */
1781 # ifndef YYSTACK_RELOCATE
1782 goto yyexhaustedlab;
1783 # else
1784 /* Extend the stack our own way. */
1785 if (YYMAXDEPTH <= yystacksize)
1786 goto yyexhaustedlab;
1787 yystacksize *= 2;
1788 if (YYMAXDEPTH < yystacksize)
1789 yystacksize = YYMAXDEPTH;
1790
1791 {
1792 yytype_int16 *yyss1 = yyss;
1793 union yyalloc *yyptr =
1794 (union yyalloc *) YYSTACK_ALLOC (YYSTACK_BYTES (yystacksize));
1795 if (! yyptr)
1796 goto yyexhaustedlab;
1797 YYSTACK_RELOCATE (yyss_alloc, yyss);
1798 YYSTACK_RELOCATE (yyvs_alloc, yyvs);
1799 # undef YYSTACK_RELOCATE
1800 if (yyss1 != yyssa)
1801 YYSTACK_FREE (yyss1);
1802 }
1803 # endif
1804 #endif /* no yyoverflow */
1805
1806 yyssp = yyss + yysize - 1;
1807 yyvsp = yyvs + yysize - 1;
1808
1809 YYDPRINTF ((stderr, "Stack size increased to %lu\n",
1810 (unsigned long int) yystacksize));
1811
1812 if (yyss + yystacksize - 1 <= yyssp)
1813 YYABORT;
1814 }
1815
1816 YYDPRINTF ((stderr, "Entering state %d\n", yystate));
1817
1818 if (yystate == YYFINAL)
1819 YYACCEPT;
1820
1821 goto yybackup;
1822
1823 /*-----------.
1824 | yybackup. |
1825 `-----------*/
1826 yybackup:
1827
1828 /* Do appropriate processing given the current state. Read a
1829 lookahead token if we need one and don't already have one. */
1830
1831 /* First try to decide what to do without reference to lookahead token. */
1832 yyn = yypact[yystate];
1833 if (yypact_value_is_default (yyn))
1834 goto yydefault;
1835
1836 /* Not known => get a lookahead token if don't already have one. */
1837
1838 /* YYCHAR is either YYEMPTY or YYEOF or a valid lookahead symbol. */
1839 if (yychar == YYEMPTY)
1840 {
1841 YYDPRINTF ((stderr, "Reading a token: "));
1842 yychar = yylex ();
1843 }
1844
1845 if (yychar <= YYEOF)
1846 {
1847 yychar = yytoken = YYEOF;
1848 YYDPRINTF ((stderr, "Now at end of input.\n"));
1849 }
1850 else
1851 {
1852 yytoken = YYTRANSLATE (yychar);
1853 YY_SYMBOL_PRINT ("Next token is", yytoken, &yylval, &yylloc);
1854 }
1855
1856 /* If the proper action on seeing token YYTOKEN is to reduce or to
1857 detect an error, take that action. */
1858 yyn += yytoken;
1859 if (yyn < 0 || YYLAST < yyn || yycheck[yyn] != yytoken)
1860 goto yydefault;
1861 yyn = yytable[yyn];
1862 if (yyn <= 0)
1863 {
1864 if (yytable_value_is_error (yyn))
1865 goto yyerrlab;
1866 yyn = -yyn;
1867 goto yyreduce;
1868 }
1869
1870 /* Count tokens shifted since error; after three, turn off error
1871 status. */
1872 if (yyerrstatus)
1873 yyerrstatus--;
1874
1875 /* Shift the lookahead token. */
1876 YY_SYMBOL_PRINT ("Shifting", yytoken, &yylval, &yylloc);
1877
1878 /* Discard the shifted token. */
1879 yychar = YYEMPTY;
1880
1881 yystate = yyn;
1882 YY_IGNORE_MAYBE_UNINITIALIZED_BEGIN
1883 *++yyvsp = yylval;
1884 YY_IGNORE_MAYBE_UNINITIALIZED_END
1885
1886 goto yynewstate;
1887
1888
1889 /*-----------------------------------------------------------.
1890 | yydefault -- do the default action for the current state. |
1891 `-----------------------------------------------------------*/
1892 yydefault:
1893 yyn = yydefact[yystate];
1894 if (yyn == 0)
1895 goto yyerrlab;
1896 goto yyreduce;
1897
1898
1899 /*-----------------------------.
1900 | yyreduce -- Do a reduction. |
1901 `-----------------------------*/
1902 yyreduce:
1903 /* yyn is the number of a rule to reduce with. */
1904 yylen = yyr2[yyn];
1905
1906 /* If YYLEN is nonzero, implement the default value of the action:
1907 '$$ = $1'.
1908
1909 Otherwise, the following line sets YYVAL to garbage.
1910 This behavior is undocumented and Bison
1911 users should not rely upon it. Assigning to YYVAL
1912 unconditionally makes the parser a bit smaller, and it avoids a
1913 GCC warning that YYVAL may be used uninitialized. */
1914 yyval = yyvsp[1-yylen];
1915
1916
1917 YY_REDUCE_PRINT (yyn);
1918 switch (yyn)
1919 {
1920 case 2:
1921 #line 382 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
1922 {
1923 /* Case of regular command. Discard the error
1924 safety net,and return the command just parsed. */
1925 global_command = (yyvsp[-1].command);
1926 eof_encountered = 0;
1927 /* discard_parser_constructs (0); */
1928 if (parser_state & PST_CMDSUBST)
1929 parser_state |= PST_EOFTOKEN;
1930 YYACCEPT;
1931 }
1932 #line 1933 "y.tab.c" /* yacc.c:1648 */
1933 break;
1934
1935 case 3:
1936 #line 393 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
1937 {
1938 /* Case of regular command, but not a very
1939 interesting one. Return a NULL command. */
1940 global_command = (COMMAND *)NULL;
1941 if (parser_state & PST_CMDSUBST)
1942 parser_state |= PST_EOFTOKEN;
1943 YYACCEPT;
1944 }
1945 #line 1946 "y.tab.c" /* yacc.c:1648 */
1946 break;
1947
1948 case 4:
1949 #line 402 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
1950 {
1951 /* Error during parsing. Return NULL command. */
1952 global_command = (COMMAND *)NULL;
1953 eof_encountered = 0;
1954 /* discard_parser_constructs (1); */
1955 if (interactive && parse_and_execute_level == 0)
1956 {
1957 YYACCEPT;
1958 }
1959 else
1960 {
1961 YYABORT;
1962 }
1963 }
1964 #line 1965 "y.tab.c" /* yacc.c:1648 */
1965 break;
1966
1967 case 5:
1968 #line 417 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
1969 {
1970 /* EOF after an error. Do ignoreeof or not. Really
1971 only interesting in non-interactive shells */
1972 global_command = (COMMAND *)NULL;
1973 if (last_command_exit_value == 0)
1974 last_command_exit_value = EX_BADUSAGE; /* force error return */
1975 handle_eof_input_unit ();
1976 if (interactive && parse_and_execute_level == 0)
1977 {
1978 YYACCEPT;
1979 }
1980 else
1981 {
1982 YYABORT;
1983 }
1984 }
1985 #line 1986 "y.tab.c" /* yacc.c:1648 */
1986 break;
1987
1988 case 6:
1989 #line 434 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
1990 {
1991 /* Case of EOF seen by itself. Do ignoreeof or
1992 not. */
1993 global_command = (COMMAND *)NULL;
1994 handle_eof_input_unit ();
1995 YYACCEPT;
1996 }
1997 #line 1998 "y.tab.c" /* yacc.c:1648 */
1998 break;
1999
2000 case 7:
2001 #line 444 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
2002 { (yyval.word_list) = make_word_list ((yyvsp[0].word), (WORD_LIST *)NULL); }
2003 #line 2004 "y.tab.c" /* yacc.c:1648 */
2004 break;
2005
2006 case 8:
2007 #line 446 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
2008 { (yyval.word_list) = make_word_list ((yyvsp[0].word), (yyvsp[-1].word_list)); }
2009 #line 2010 "y.tab.c" /* yacc.c:1648 */
2010 break;
2011
2012 case 9:
2013 #line 450 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
2014 {
2015 source.dest = 1;
2016 redir.filename = (yyvsp[0].word);
2017 (yyval.redirect) = make_redirection (source, r_output_direction, redir, 0);
2018 }
2019 #line 2020 "y.tab.c" /* yacc.c:1648 */
2020 break;
2021
2022 case 10:
2023 #line 456 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
2024 {
2025 source.dest = 0;
2026 redir.filename = (yyvsp[0].word);
2027 (yyval.redirect) = make_redirection (source, r_input_direction, redir, 0);
2028 }
2029 #line 2030 "y.tab.c" /* yacc.c:1648 */
2030 break;
2031
2032 case 11:
2033 #line 462 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
2034 {
2035 source.dest = (yyvsp[-2].number);
2036 redir.filename = (yyvsp[0].word);
2037 (yyval.redirect) = make_redirection (source, r_output_direction, redir, 0);
2038 }
2039 #line 2040 "y.tab.c" /* yacc.c:1648 */
2040 break;
2041
2042 case 12:
2043 #line 468 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
2044 {
2045 source.dest = (yyvsp[-2].number);
2046 redir.filename = (yyvsp[0].word);
2047 (yyval.redirect) = make_redirection (source, r_input_direction, redir, 0);
2048 }
2049 #line 2050 "y.tab.c" /* yacc.c:1648 */
2050 break;
2051
2052 case 13:
2053 #line 474 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
2054 {
2055 source.filename = (yyvsp[-2].word);
2056 redir.filename = (yyvsp[0].word);
2057 (yyval.redirect) = make_redirection (source, r_output_direction, redir, REDIR_VARASSIGN);
2058 }
2059 #line 2060 "y.tab.c" /* yacc.c:1648 */
2060 break;
2061
2062 case 14:
2063 #line 480 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
2064 {
2065 source.filename = (yyvsp[-2].word);
2066 redir.filename = (yyvsp[0].word);
2067 (yyval.redirect) = make_redirection (source, r_input_direction, redir, REDIR_VARASSIGN);
2068 }
2069 #line 2070 "y.tab.c" /* yacc.c:1648 */
2070 break;
2071
2072 case 15:
2073 #line 486 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
2074 {
2075 source.dest = 1;
2076 redir.filename = (yyvsp[0].word);
2077 (yyval.redirect) = make_redirection (source, r_appending_to, redir, 0);
2078 }
2079 #line 2080 "y.tab.c" /* yacc.c:1648 */
2080 break;
2081
2082 case 16:
2083 #line 492 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
2084 {
2085 source.dest = (yyvsp[-2].number);
2086 redir.filename = (yyvsp[0].word);
2087 (yyval.redirect) = make_redirection (source, r_appending_to, redir, 0);
2088 }
2089 #line 2090 "y.tab.c" /* yacc.c:1648 */
2090 break;
2091
2092 case 17:
2093 #line 498 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
2094 {
2095 source.filename = (yyvsp[-2].word);
2096 redir.filename = (yyvsp[0].word);
2097 (yyval.redirect) = make_redirection (source, r_appending_to, redir, REDIR_VARASSIGN);
2098 }
2099 #line 2100 "y.tab.c" /* yacc.c:1648 */
2100 break;
2101
2102 case 18:
2103 #line 504 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
2104 {
2105 source.dest = 1;
2106 redir.filename = (yyvsp[0].word);
2107 (yyval.redirect) = make_redirection (source, r_output_force, redir, 0);
2108 }
2109 #line 2110 "y.tab.c" /* yacc.c:1648 */
2110 break;
2111
2112 case 19:
2113 #line 510 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
2114 {
2115 source.dest = (yyvsp[-2].number);
2116 redir.filename = (yyvsp[0].word);
2117 (yyval.redirect) = make_redirection (source, r_output_force, redir, 0);
2118 }
2119 #line 2120 "y.tab.c" /* yacc.c:1648 */
2120 break;
2121
2122 case 20:
2123 #line 516 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
2124 {
2125 source.filename = (yyvsp[-2].word);
2126 redir.filename = (yyvsp[0].word);
2127 (yyval.redirect) = make_redirection (source, r_output_force, redir, REDIR_VARASSIGN);
2128 }
2129 #line 2130 "y.tab.c" /* yacc.c:1648 */
2130 break;
2131
2132 case 21:
2133 #line 522 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
2134 {
2135 source.dest = 0;
2136 redir.filename = (yyvsp[0].word);
2137 (yyval.redirect) = make_redirection (source, r_input_output, redir, 0);
2138 }
2139 #line 2140 "y.tab.c" /* yacc.c:1648 */
2140 break;
2141
2142 case 22:
2143 #line 528 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
2144 {
2145 source.dest = (yyvsp[-2].number);
2146 redir.filename = (yyvsp[0].word);
2147 (yyval.redirect) = make_redirection (source, r_input_output, redir, 0);
2148 }
2149 #line 2150 "y.tab.c" /* yacc.c:1648 */
2150 break;
2151
2152 case 23:
2153 #line 534 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
2154 {
2155 source.filename = (yyvsp[-2].word);
2156 redir.filename = (yyvsp[0].word);
2157 (yyval.redirect) = make_redirection (source, r_input_output, redir, REDIR_VARASSIGN);
2158 }
2159 #line 2160 "y.tab.c" /* yacc.c:1648 */
2160 break;
2161
2162 case 24:
2163 #line 540 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
2164 {
2165 source.dest = 0;
2166 redir.filename = (yyvsp[0].word);
2167 (yyval.redirect) = make_redirection (source, r_reading_until, redir, 0);
2168 push_heredoc ((yyval.redirect));
2169 }
2170 #line 2171 "y.tab.c" /* yacc.c:1648 */
2171 break;
2172
2173 case 25:
2174 #line 547 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
2175 {
2176 source.dest = (yyvsp[-2].number);
2177 redir.filename = (yyvsp[0].word);
2178 (yyval.redirect) = make_redirection (source, r_reading_until, redir, 0);
2179 push_heredoc ((yyval.redirect));
2180 }
2181 #line 2182 "y.tab.c" /* yacc.c:1648 */
2182 break;
2183
2184 case 26:
2185 #line 554 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
2186 {
2187 source.filename = (yyvsp[-2].word);
2188 redir.filename = (yyvsp[0].word);
2189 (yyval.redirect) = make_redirection (source, r_reading_until, redir, REDIR_VARASSIGN);
2190 push_heredoc ((yyval.redirect));
2191 }
2192 #line 2193 "y.tab.c" /* yacc.c:1648 */
2193 break;
2194
2195 case 27:
2196 #line 561 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
2197 {
2198 source.dest = 0;
2199 redir.filename = (yyvsp[0].word);
2200 (yyval.redirect) = make_redirection (source, r_deblank_reading_until, redir, 0);
2201 push_heredoc ((yyval.redirect));
2202 }
2203 #line 2204 "y.tab.c" /* yacc.c:1648 */
2204 break;
2205
2206 case 28:
2207 #line 568 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
2208 {
2209 source.dest = (yyvsp[-2].number);
2210 redir.filename = (yyvsp[0].word);
2211 (yyval.redirect) = make_redirection (source, r_deblank_reading_until, redir, 0);
2212 push_heredoc ((yyval.redirect));
2213 }
2214 #line 2215 "y.tab.c" /* yacc.c:1648 */
2215 break;
2216
2217 case 29:
2218 #line 575 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
2219 {
2220 source.filename = (yyvsp[-2].word);
2221 redir.filename = (yyvsp[0].word);
2222 (yyval.redirect) = make_redirection (source, r_deblank_reading_until, redir, REDIR_VARASSIGN);
2223 push_heredoc ((yyval.redirect));
2224 }
2225 #line 2226 "y.tab.c" /* yacc.c:1648 */
2226 break;
2227
2228 case 30:
2229 #line 582 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
2230 {
2231 source.dest = 0;
2232 redir.filename = (yyvsp[0].word);
2233 (yyval.redirect) = make_redirection (source, r_reading_string, redir, 0);
2234 }
2235 #line 2236 "y.tab.c" /* yacc.c:1648 */
2236 break;
2237
2238 case 31:
2239 #line 588 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
2240 {
2241 source.dest = (yyvsp[-2].number);
2242 redir.filename = (yyvsp[0].word);
2243 (yyval.redirect) = make_redirection (source, r_reading_string, redir, 0);
2244 }
2245 #line 2246 "y.tab.c" /* yacc.c:1648 */
2246 break;
2247
2248 case 32:
2249 #line 594 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
2250 {
2251 source.filename = (yyvsp[-2].word);
2252 redir.filename = (yyvsp[0].word);
2253 (yyval.redirect) = make_redirection (source, r_reading_string, redir, REDIR_VARASSIGN);
2254 }
2255 #line 2256 "y.tab.c" /* yacc.c:1648 */
2256 break;
2257
2258 case 33:
2259 #line 600 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
2260 {
2261 source.dest = 0;
2262 redir.dest = (yyvsp[0].number);
2263 (yyval.redirect) = make_redirection (source, r_duplicating_input, redir, 0);
2264 }
2265 #line 2266 "y.tab.c" /* yacc.c:1648 */
2266 break;
2267
2268 case 34:
2269 #line 606 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
2270 {
2271 source.dest = (yyvsp[-2].number);
2272 redir.dest = (yyvsp[0].number);
2273 (yyval.redirect) = make_redirection (source, r_duplicating_input, redir, 0);
2274 }
2275 #line 2276 "y.tab.c" /* yacc.c:1648 */
2276 break;
2277
2278 case 35:
2279 #line 612 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
2280 {
2281 source.filename = (yyvsp[-2].word);
2282 redir.dest = (yyvsp[0].number);
2283 (yyval.redirect) = make_redirection (source, r_duplicating_input, redir, REDIR_VARASSIGN);
2284 }
2285 #line 2286 "y.tab.c" /* yacc.c:1648 */
2286 break;
2287
2288 case 36:
2289 #line 618 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
2290 {
2291 source.dest = 1;
2292 redir.dest = (yyvsp[0].number);
2293 (yyval.redirect) = make_redirection (source, r_duplicating_output, redir, 0);
2294 }
2295 #line 2296 "y.tab.c" /* yacc.c:1648 */
2296 break;
2297
2298 case 37:
2299 #line 624 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
2300 {
2301 source.dest = (yyvsp[-2].number);
2302 redir.dest = (yyvsp[0].number);
2303 (yyval.redirect) = make_redirection (source, r_duplicating_output, redir, 0);
2304 }
2305 #line 2306 "y.tab.c" /* yacc.c:1648 */
2306 break;
2307
2308 case 38:
2309 #line 630 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
2310 {
2311 source.filename = (yyvsp[-2].word);
2312 redir.dest = (yyvsp[0].number);
2313 (yyval.redirect) = make_redirection (source, r_duplicating_output, redir, REDIR_VARASSIGN);
2314 }
2315 #line 2316 "y.tab.c" /* yacc.c:1648 */
2316 break;
2317
2318 case 39:
2319 #line 636 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
2320 {
2321 source.dest = 0;
2322 redir.filename = (yyvsp[0].word);
2323 (yyval.redirect) = make_redirection (source, r_duplicating_input_word, redir, 0);
2324 }
2325 #line 2326 "y.tab.c" /* yacc.c:1648 */
2326 break;
2327
2328 case 40:
2329 #line 642 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
2330 {
2331 source.dest = (yyvsp[-2].number);
2332 redir.filename = (yyvsp[0].word);
2333 (yyval.redirect) = make_redirection (source, r_duplicating_input_word, redir, 0);
2334 }
2335 #line 2336 "y.tab.c" /* yacc.c:1648 */
2336 break;
2337
2338 case 41:
2339 #line 648 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
2340 {
2341 source.filename = (yyvsp[-2].word);
2342 redir.filename = (yyvsp[0].word);
2343 (yyval.redirect) = make_redirection (source, r_duplicating_input_word, redir, REDIR_VARASSIGN);
2344 }
2345 #line 2346 "y.tab.c" /* yacc.c:1648 */
2346 break;
2347
2348 case 42:
2349 #line 654 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
2350 {
2351 source.dest = 1;
2352 redir.filename = (yyvsp[0].word);
2353 (yyval.redirect) = make_redirection (source, r_duplicating_output_word, redir, 0);
2354 }
2355 #line 2356 "y.tab.c" /* yacc.c:1648 */
2356 break;
2357
2358 case 43:
2359 #line 660 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
2360 {
2361 source.dest = (yyvsp[-2].number);
2362 redir.filename = (yyvsp[0].word);
2363 (yyval.redirect) = make_redirection (source, r_duplicating_output_word, redir, 0);
2364 }
2365 #line 2366 "y.tab.c" /* yacc.c:1648 */
2366 break;
2367
2368 case 44:
2369 #line 666 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
2370 {
2371 source.filename = (yyvsp[-2].word);
2372 redir.filename = (yyvsp[0].word);
2373 (yyval.redirect) = make_redirection (source, r_duplicating_output_word, redir, REDIR_VARASSIGN);
2374 }
2375 #line 2376 "y.tab.c" /* yacc.c:1648 */
2376 break;
2377
2378 case 45:
2379 #line 672 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
2380 {
2381 source.dest = 1;
2382 redir.dest = 0;
2383 (yyval.redirect) = make_redirection (source, r_close_this, redir, 0);
2384 }
2385 #line 2386 "y.tab.c" /* yacc.c:1648 */
2386 break;
2387
2388 case 46:
2389 #line 678 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
2390 {
2391 source.dest = (yyvsp[-2].number);
2392 redir.dest = 0;
2393 (yyval.redirect) = make_redirection (source, r_close_this, redir, 0);
2394 }
2395 #line 2396 "y.tab.c" /* yacc.c:1648 */
2396 break;
2397
2398 case 47:
2399 #line 684 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
2400 {
2401 source.filename = (yyvsp[-2].word);
2402 redir.dest = 0;
2403 (yyval.redirect) = make_redirection (source, r_close_this, redir, REDIR_VARASSIGN);
2404 }
2405 #line 2406 "y.tab.c" /* yacc.c:1648 */
2406 break;
2407
2408 case 48:
2409 #line 690 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
2410 {
2411 source.dest = 0;
2412 redir.dest = 0;
2413 (yyval.redirect) = make_redirection (source, r_close_this, redir, 0);
2414 }
2415 #line 2416 "y.tab.c" /* yacc.c:1648 */
2416 break;
2417
2418 case 49:
2419 #line 696 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
2420 {
2421 source.dest = (yyvsp[-2].number);
2422 redir.dest = 0;
2423 (yyval.redirect) = make_redirection (source, r_close_this, redir, 0);
2424 }
2425 #line 2426 "y.tab.c" /* yacc.c:1648 */
2426 break;
2427
2428 case 50:
2429 #line 702 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
2430 {
2431 source.filename = (yyvsp[-2].word);
2432 redir.dest = 0;
2433 (yyval.redirect) = make_redirection (source, r_close_this, redir, REDIR_VARASSIGN);
2434 }
2435 #line 2436 "y.tab.c" /* yacc.c:1648 */
2436 break;
2437
2438 case 51:
2439 #line 708 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
2440 {
2441 source.dest = 1;
2442 redir.filename = (yyvsp[0].word);
2443 (yyval.redirect) = make_redirection (source, r_err_and_out, redir, 0);
2444 }
2445 #line 2446 "y.tab.c" /* yacc.c:1648 */
2446 break;
2447
2448 case 52:
2449 #line 714 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
2450 {
2451 source.dest = 1;
2452 redir.filename = (yyvsp[0].word);
2453 (yyval.redirect) = make_redirection (source, r_append_err_and_out, redir, 0);
2454 }
2455 #line 2456 "y.tab.c" /* yacc.c:1648 */
2456 break;
2457
2458 case 53:
2459 #line 722 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
2460 { (yyval.element).word = (yyvsp[0].word); (yyval.element).redirect = 0; }
2461 #line 2462 "y.tab.c" /* yacc.c:1648 */
2462 break;
2463
2464 case 54:
2465 #line 724 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
2466 { (yyval.element).word = (yyvsp[0].word); (yyval.element).redirect = 0; }
2467 #line 2468 "y.tab.c" /* yacc.c:1648 */
2468 break;
2469
2470 case 55:
2471 #line 726 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
2472 { (yyval.element).redirect = (yyvsp[0].redirect); (yyval.element).word = 0; }
2473 #line 2474 "y.tab.c" /* yacc.c:1648 */
2474 break;
2475
2476 case 56:
2477 #line 730 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
2478 {
2479 (yyval.redirect) = (yyvsp[0].redirect);
2480 }
2481 #line 2482 "y.tab.c" /* yacc.c:1648 */
2482 break;
2483
2484 case 57:
2485 #line 734 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
2486 {
2487 register REDIRECT *t;
2488
2489 for (t = (yyvsp[-1].redirect); t->next; t = t->next)
2490 ;
2491 t->next = (yyvsp[0].redirect);
2492 (yyval.redirect) = (yyvsp[-1].redirect);
2493 }
2494 #line 2495 "y.tab.c" /* yacc.c:1648 */
2495 break;
2496
2497 case 58:
2498 #line 745 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
2499 { (yyval.command) = make_simple_command ((yyvsp[0].element), (COMMAND *)NULL); }
2500 #line 2501 "y.tab.c" /* yacc.c:1648 */
2501 break;
2502
2503 case 59:
2504 #line 747 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
2505 { (yyval.command) = make_simple_command ((yyvsp[0].element), (yyvsp[-1].command)); }
2506 #line 2507 "y.tab.c" /* yacc.c:1648 */
2507 break;
2508
2509 case 60:
2510 #line 751 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
2511 { (yyval.command) = clean_simple_command ((yyvsp[0].command)); }
2512 #line 2513 "y.tab.c" /* yacc.c:1648 */
2513 break;
2514
2515 case 61:
2516 #line 753 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
2517 { (yyval.command) = (yyvsp[0].command); }
2518 #line 2519 "y.tab.c" /* yacc.c:1648 */
2519 break;
2520
2521 case 62:
2522 #line 755 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
2523 {
2524 COMMAND *tc;
2525
2526 tc = (yyvsp[-1].command);
2527 if (tc && tc->redirects)
2528 {
2529 register REDIRECT *t;
2530 for (t = tc->redirects; t->next; t = t->next)
2531 ;
2532 t->next = (yyvsp[0].redirect);
2533 }
2534 else if (tc)
2535 tc->redirects = (yyvsp[0].redirect);
2536 (yyval.command) = (yyvsp[-1].command);
2537 }
2538 #line 2539 "y.tab.c" /* yacc.c:1648 */
2539 break;
2540
2541 case 63:
2542 #line 771 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
2543 { (yyval.command) = (yyvsp[0].command); }
2544 #line 2545 "y.tab.c" /* yacc.c:1648 */
2545 break;
2546
2547 case 64:
2548 #line 773 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
2549 { (yyval.command) = (yyvsp[0].command); }
2550 #line 2551 "y.tab.c" /* yacc.c:1648 */
2551 break;
2552
2553 case 65:
2554 #line 777 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
2555 { (yyval.command) = (yyvsp[0].command); }
2556 #line 2557 "y.tab.c" /* yacc.c:1648 */
2557 break;
2558
2559 case 66:
2560 #line 779 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
2561 { (yyval.command) = (yyvsp[0].command); }
2562 #line 2563 "y.tab.c" /* yacc.c:1648 */
2563 break;
2564
2565 case 67:
2566 #line 781 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
2567 { (yyval.command) = make_while_command ((yyvsp[-3].command), (yyvsp[-1].command)); }
2568 #line 2569 "y.tab.c" /* yacc.c:1648 */
2569 break;
2570
2571 case 68:
2572 #line 783 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
2573 { (yyval.command) = make_until_command ((yyvsp[-3].command), (yyvsp[-1].command)); }
2574 #line 2575 "y.tab.c" /* yacc.c:1648 */
2575 break;
2576
2577 case 69:
2578 #line 785 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
2579 { (yyval.command) = (yyvsp[0].command); }
2580 #line 2581 "y.tab.c" /* yacc.c:1648 */
2581 break;
2582
2583 case 70:
2584 #line 787 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
2585 { (yyval.command) = (yyvsp[0].command); }
2586 #line 2587 "y.tab.c" /* yacc.c:1648 */
2587 break;
2588
2589 case 71:
2590 #line 789 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
2591 { (yyval.command) = (yyvsp[0].command); }
2592 #line 2593 "y.tab.c" /* yacc.c:1648 */
2593 break;
2594
2595 case 72:
2596 #line 791 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
2597 { (yyval.command) = (yyvsp[0].command); }
2598 #line 2599 "y.tab.c" /* yacc.c:1648 */
2599 break;
2600
2601 case 73:
2602 #line 793 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
2603 { (yyval.command) = (yyvsp[0].command); }
2604 #line 2605 "y.tab.c" /* yacc.c:1648 */
2605 break;
2606
2607 case 74:
2608 #line 795 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
2609 { (yyval.command) = (yyvsp[0].command); }
2610 #line 2611 "y.tab.c" /* yacc.c:1648 */
2611 break;
2612
2613 case 75:
2614 #line 797 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
2615 { (yyval.command) = (yyvsp[0].command); }
2616 #line 2617 "y.tab.c" /* yacc.c:1648 */
2617 break;
2618
2619 case 76:
2620 #line 801 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
2621 {
2622 (yyval.command) = make_for_command ((yyvsp[-4].word), add_string_to_list ("\"$@\"", (WORD_LIST *)NULL), (yyvsp[-1].command), word_lineno[word_top]);
2623 if (word_top > 0) word_top--;
2624 }
2625 #line 2626 "y.tab.c" /* yacc.c:1648 */
2626 break;
2627
2628 case 77:
2629 #line 806 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
2630 {
2631 (yyval.command) = make_for_command ((yyvsp[-4].word), add_string_to_list ("\"$@\"", (WORD_LIST *)NULL), (yyvsp[-1].command), word_lineno[word_top]);
2632 if (word_top > 0) word_top--;
2633 }
2634 #line 2635 "y.tab.c" /* yacc.c:1648 */
2635 break;
2636
2637 case 78:
2638 #line 811 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
2639 {
2640 (yyval.command) = make_for_command ((yyvsp[-5].word), add_string_to_list ("\"$@\"", (WORD_LIST *)NULL), (yyvsp[-1].command), word_lineno[word_top]);
2641 if (word_top > 0) word_top--;
2642 }
2643 #line 2644 "y.tab.c" /* yacc.c:1648 */
2644 break;
2645
2646 case 79:
2647 #line 816 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
2648 {
2649 (yyval.command) = make_for_command ((yyvsp[-5].word), add_string_to_list ("\"$@\"", (WORD_LIST *)NULL), (yyvsp[-1].command), word_lineno[word_top]);
2650 if (word_top > 0) word_top--;
2651 }
2652 #line 2653 "y.tab.c" /* yacc.c:1648 */
2653 break;
2654
2655 case 80:
2656 #line 821 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
2657 {
2658 (yyval.command) = make_for_command ((yyvsp[-8].word), REVERSE_LIST ((yyvsp[-5].word_list), WORD_LIST *), (yyvsp[-1].command), word_lineno[word_top]);
2659 if (word_top > 0) word_top--;
2660 }
2661 #line 2662 "y.tab.c" /* yacc.c:1648 */
2662 break;
2663
2664 case 81:
2665 #line 826 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
2666 {
2667 (yyval.command) = make_for_command ((yyvsp[-8].word), REVERSE_LIST ((yyvsp[-5].word_list), WORD_LIST *), (yyvsp[-1].command), word_lineno[word_top]);
2668 if (word_top > 0) word_top--;
2669 }
2670 #line 2671 "y.tab.c" /* yacc.c:1648 */
2671 break;
2672
2673 case 82:
2674 #line 831 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
2675 {
2676 (yyval.command) = make_for_command ((yyvsp[-7].word), (WORD_LIST *)NULL, (yyvsp[-1].command), word_lineno[word_top]);
2677 if (word_top > 0) word_top--;
2678 }
2679 #line 2680 "y.tab.c" /* yacc.c:1648 */
2680 break;
2681
2682 case 83:
2683 #line 836 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
2684 {
2685 (yyval.command) = make_for_command ((yyvsp[-7].word), (WORD_LIST *)NULL, (yyvsp[-1].command), word_lineno[word_top]);
2686 if (word_top > 0) word_top--;
2687 }
2688 #line 2689 "y.tab.c" /* yacc.c:1648 */
2689 break;
2690
2691 case 84:
2692 #line 843 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
2693 {
2694 (yyval.command) = make_arith_for_command ((yyvsp[-5].word_list), (yyvsp[-1].command), arith_for_lineno);
2695 if ((yyval.command) == 0) YYERROR;
2696 if (word_top > 0) word_top--;
2697 }
2698 #line 2699 "y.tab.c" /* yacc.c:1648 */
2699 break;
2700
2701 case 85:
2702 #line 849 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
2703 {
2704 (yyval.command) = make_arith_for_command ((yyvsp[-5].word_list), (yyvsp[-1].command), arith_for_lineno);
2705 if ((yyval.command) == 0) YYERROR;
2706 if (word_top > 0) word_top--;
2707 }
2708 #line 2709 "y.tab.c" /* yacc.c:1648 */
2709 break;
2710
2711 case 86:
2712 #line 855 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
2713 {
2714 (yyval.command) = make_arith_for_command ((yyvsp[-3].word_list), (yyvsp[-1].command), arith_for_lineno);
2715 if ((yyval.command) == 0) YYERROR;
2716 if (word_top > 0) word_top--;
2717 }
2718 #line 2719 "y.tab.c" /* yacc.c:1648 */
2719 break;
2720
2721 case 87:
2722 #line 861 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
2723 {
2724 (yyval.command) = make_arith_for_command ((yyvsp[-3].word_list), (yyvsp[-1].command), arith_for_lineno);
2725 if ((yyval.command) == 0) YYERROR;
2726 if (word_top > 0) word_top--;
2727 }
2728 #line 2729 "y.tab.c" /* yacc.c:1648 */
2729 break;
2730
2731 case 88:
2732 #line 869 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
2733 {
2734 (yyval.command) = make_select_command ((yyvsp[-4].word), add_string_to_list ("\"$@\"", (WORD_LIST *)NULL), (yyvsp[-1].command), word_lineno[word_top]);
2735 if (word_top > 0) word_top--;
2736 }
2737 #line 2738 "y.tab.c" /* yacc.c:1648 */
2738 break;
2739
2740 case 89:
2741 #line 874 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
2742 {
2743 (yyval.command) = make_select_command ((yyvsp[-4].word), add_string_to_list ("\"$@\"", (WORD_LIST *)NULL), (yyvsp[-1].command), word_lineno[word_top]);
2744 if (word_top > 0) word_top--;
2745 }
2746 #line 2747 "y.tab.c" /* yacc.c:1648 */
2747 break;
2748
2749 case 90:
2750 #line 879 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
2751 {
2752 (yyval.command) = make_select_command ((yyvsp[-5].word), add_string_to_list ("\"$@\"", (WORD_LIST *)NULL), (yyvsp[-1].command), word_lineno[word_top]);
2753 if (word_top > 0) word_top--;
2754 }
2755 #line 2756 "y.tab.c" /* yacc.c:1648 */
2756 break;
2757
2758 case 91:
2759 #line 884 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
2760 {
2761 (yyval.command) = make_select_command ((yyvsp[-5].word), add_string_to_list ("\"$@\"", (WORD_LIST *)NULL), (yyvsp[-1].command), word_lineno[word_top]);
2762 if (word_top > 0) word_top--;
2763 }
2764 #line 2765 "y.tab.c" /* yacc.c:1648 */
2765 break;
2766
2767 case 92:
2768 #line 889 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
2769 {
2770 (yyval.command) = make_select_command ((yyvsp[-8].word), REVERSE_LIST ((yyvsp[-5].word_list), WORD_LIST *), (yyvsp[-1].command), word_lineno[word_top]);
2771 if (word_top > 0) word_top--;
2772 }
2773 #line 2774 "y.tab.c" /* yacc.c:1648 */
2774 break;
2775
2776 case 93:
2777 #line 894 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
2778 {
2779 (yyval.command) = make_select_command ((yyvsp[-8].word), REVERSE_LIST ((yyvsp[-5].word_list), WORD_LIST *), (yyvsp[-1].command), word_lineno[word_top]);
2780 if (word_top > 0) word_top--;
2781 }
2782 #line 2783 "y.tab.c" /* yacc.c:1648 */
2783 break;
2784
2785 case 94:
2786 #line 899 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
2787 {
2788 (yyval.command) = make_select_command ((yyvsp[-7].word), (WORD_LIST *)NULL, (yyvsp[-1].command), word_lineno[word_top]);
2789 if (word_top > 0) word_top--;
2790 }
2791 #line 2792 "y.tab.c" /* yacc.c:1648 */
2792 break;
2793
2794 case 95:
2795 #line 904 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
2796 {
2797 (yyval.command) = make_select_command ((yyvsp[-7].word), (WORD_LIST *)NULL, (yyvsp[-1].command), word_lineno[word_top]);
2798 if (word_top > 0) word_top--;
2799 }
2800 #line 2801 "y.tab.c" /* yacc.c:1648 */
2801 break;
2802
2803 case 96:
2804 #line 911 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
2805 {
2806 (yyval.command) = make_case_command ((yyvsp[-4].word), (PATTERN_LIST *)NULL, word_lineno[word_top]);
2807 if (word_top > 0) word_top--;
2808 }
2809 #line 2810 "y.tab.c" /* yacc.c:1648 */
2810 break;
2811
2812 case 97:
2813 #line 916 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
2814 {
2815 (yyval.command) = make_case_command ((yyvsp[-5].word), (yyvsp[-2].pattern), word_lineno[word_top]);
2816 if (word_top > 0) word_top--;
2817 }
2818 #line 2819 "y.tab.c" /* yacc.c:1648 */
2819 break;
2820
2821 case 98:
2822 #line 921 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
2823 {
2824 (yyval.command) = make_case_command ((yyvsp[-4].word), (yyvsp[-1].pattern), word_lineno[word_top]);
2825 if (word_top > 0) word_top--;
2826 }
2827 #line 2828 "y.tab.c" /* yacc.c:1648 */
2828 break;
2829
2830 case 99:
2831 #line 928 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
2832 { (yyval.command) = make_function_def ((yyvsp[-4].word), (yyvsp[0].command), function_dstart, function_bstart); }
2833 #line 2834 "y.tab.c" /* yacc.c:1648 */
2834 break;
2835
2836 case 100:
2837 #line 931 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
2838 { (yyval.command) = make_function_def ((yyvsp[-4].word), (yyvsp[0].command), function_dstart, function_bstart); }
2839 #line 2840 "y.tab.c" /* yacc.c:1648 */
2840 break;
2841
2842 case 101:
2843 #line 934 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
2844 { (yyval.command) = make_function_def ((yyvsp[-2].word), (yyvsp[0].command), function_dstart, function_bstart); }
2845 #line 2846 "y.tab.c" /* yacc.c:1648 */
2846 break;
2847
2848 case 102:
2849 #line 938 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
2850 { (yyval.command) = (yyvsp[0].command); }
2851 #line 2852 "y.tab.c" /* yacc.c:1648 */
2852 break;
2853
2854 case 103:
2855 #line 940 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
2856 {
2857 COMMAND *tc;
2858
2859 tc = (yyvsp[-1].command);
2860 /* According to Posix.2 3.9.5, redirections
2861 specified after the body of a function should
2862 be attached to the function and performed when
2863 the function is executed, not as part of the
2864 function definition command. */
2865 /* XXX - I don't think it matters, but we might
2866 want to change this in the future to avoid
2867 problems differentiating between a function
2868 definition with a redirection and a function
2869 definition containing a single command with a
2870 redirection. The two are semantically equivalent,
2871 though -- the only difference is in how the
2872 command printing code displays the redirections. */
2873 if (tc && tc->redirects)
2874 {
2875 register REDIRECT *t;
2876 for (t = tc->redirects; t->next; t = t->next)
2877 ;
2878 t->next = (yyvsp[0].redirect);
2879 }
2880 else if (tc)
2881 tc->redirects = (yyvsp[0].redirect);
2882 (yyval.command) = (yyvsp[-1].command);
2883 }
2884 #line 2885 "y.tab.c" /* yacc.c:1648 */
2885 break;
2886
2887 case 104:
2888 #line 971 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
2889 {
2890 (yyval.command) = make_subshell_command ((yyvsp[-1].command));
2891 (yyval.command)->flags |= CMD_WANT_SUBSHELL;
2892 }
2893 #line 2894 "y.tab.c" /* yacc.c:1648 */
2894 break;
2895
2896 case 105:
2897 #line 978 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
2898 {
2899 (yyval.command) = make_coproc_command ("COPROC", (yyvsp[0].command));
2900 (yyval.command)->flags |= CMD_WANT_SUBSHELL|CMD_COPROC_SUBSHELL;
2901 }
2902 #line 2903 "y.tab.c" /* yacc.c:1648 */
2903 break;
2904
2905 case 106:
2906 #line 983 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
2907 {
2908 COMMAND *tc;
2909
2910 tc = (yyvsp[-1].command);
2911 if (tc && tc->redirects)
2912 {
2913 register REDIRECT *t;
2914 for (t = tc->redirects; t->next; t = t->next)
2915 ;
2916 t->next = (yyvsp[0].redirect);
2917 }
2918 else if (tc)
2919 tc->redirects = (yyvsp[0].redirect);
2920 (yyval.command) = make_coproc_command ("COPROC", (yyvsp[-1].command));
2921 (yyval.command)->flags |= CMD_WANT_SUBSHELL|CMD_COPROC_SUBSHELL;
2922 }
2923 #line 2924 "y.tab.c" /* yacc.c:1648 */
2924 break;
2925
2926 case 107:
2927 #line 1000 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
2928 {
2929 (yyval.command) = make_coproc_command ((yyvsp[-1].word)->word, (yyvsp[0].command));
2930 (yyval.command)->flags |= CMD_WANT_SUBSHELL|CMD_COPROC_SUBSHELL;
2931 }
2932 #line 2933 "y.tab.c" /* yacc.c:1648 */
2933 break;
2934
2935 case 108:
2936 #line 1005 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
2937 {
2938 COMMAND *tc;
2939
2940 tc = (yyvsp[-1].command);
2941 if (tc && tc->redirects)
2942 {
2943 register REDIRECT *t;
2944 for (t = tc->redirects; t->next; t = t->next)
2945 ;
2946 t->next = (yyvsp[0].redirect);
2947 }
2948 else if (tc)
2949 tc->redirects = (yyvsp[0].redirect);
2950 (yyval.command) = make_coproc_command ((yyvsp[-2].word)->word, (yyvsp[-1].command));
2951 (yyval.command)->flags |= CMD_WANT_SUBSHELL|CMD_COPROC_SUBSHELL;
2952 }
2953 #line 2954 "y.tab.c" /* yacc.c:1648 */
2954 break;
2955
2956 case 109:
2957 #line 1022 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
2958 {
2959 (yyval.command) = make_coproc_command ("COPROC", clean_simple_command ((yyvsp[0].command)));
2960 (yyval.command)->flags |= CMD_WANT_SUBSHELL|CMD_COPROC_SUBSHELL;
2961 }
2962 #line 2963 "y.tab.c" /* yacc.c:1648 */
2963 break;
2964
2965 case 110:
2966 #line 1029 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
2967 { (yyval.command) = make_if_command ((yyvsp[-3].command), (yyvsp[-1].command), (COMMAND *)NULL); }
2968 #line 2969 "y.tab.c" /* yacc.c:1648 */
2969 break;
2970
2971 case 111:
2972 #line 1031 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
2973 { (yyval.command) = make_if_command ((yyvsp[-5].command), (yyvsp[-3].command), (yyvsp[-1].command)); }
2974 #line 2975 "y.tab.c" /* yacc.c:1648 */
2975 break;
2976
2977 case 112:
2978 #line 1033 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
2979 { (yyval.command) = make_if_command ((yyvsp[-4].command), (yyvsp[-2].command), (yyvsp[-1].command)); }
2980 #line 2981 "y.tab.c" /* yacc.c:1648 */
2981 break;
2982
2983 case 113:
2984 #line 1038 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
2985 { (yyval.command) = make_group_command ((yyvsp[-1].command)); }
2986 #line 2987 "y.tab.c" /* yacc.c:1648 */
2987 break;
2988
2989 case 114:
2990 #line 1042 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
2991 { (yyval.command) = make_arith_command ((yyvsp[0].word_list)); }
2992 #line 2993 "y.tab.c" /* yacc.c:1648 */
2993 break;
2994
2995 case 115:
2996 #line 1046 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
2997 { (yyval.command) = (yyvsp[-1].command); }
2998 #line 2999 "y.tab.c" /* yacc.c:1648 */
2999 break;
3000
3001 case 116:
3002 #line 1050 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
3003 { (yyval.command) = make_if_command ((yyvsp[-2].command), (yyvsp[0].command), (COMMAND *)NULL); }
3004 #line 3005 "y.tab.c" /* yacc.c:1648 */
3005 break;
3006
3007 case 117:
3008 #line 1052 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
3009 { (yyval.command) = make_if_command ((yyvsp[-4].command), (yyvsp[-2].command), (yyvsp[0].command)); }
3010 #line 3011 "y.tab.c" /* yacc.c:1648 */
3011 break;
3012
3013 case 118:
3014 #line 1054 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
3015 { (yyval.command) = make_if_command ((yyvsp[-3].command), (yyvsp[-1].command), (yyvsp[0].command)); }
3016 #line 3017 "y.tab.c" /* yacc.c:1648 */
3017 break;
3018
3019 case 120:
3020 #line 1059 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
3021 { (yyvsp[0].pattern)->next = (yyvsp[-1].pattern); (yyval.pattern) = (yyvsp[0].pattern); }
3022 #line 3023 "y.tab.c" /* yacc.c:1648 */
3023 break;
3024
3025 case 121:
3026 #line 1063 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
3027 { (yyval.pattern) = make_pattern_list ((yyvsp[-2].word_list), (yyvsp[0].command)); }
3028 #line 3029 "y.tab.c" /* yacc.c:1648 */
3029 break;
3030
3031 case 122:
3032 #line 1065 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
3033 { (yyval.pattern) = make_pattern_list ((yyvsp[-2].word_list), (COMMAND *)NULL); }
3034 #line 3035 "y.tab.c" /* yacc.c:1648 */
3035 break;
3036
3037 case 123:
3038 #line 1067 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
3039 { (yyval.pattern) = make_pattern_list ((yyvsp[-2].word_list), (yyvsp[0].command)); }
3040 #line 3041 "y.tab.c" /* yacc.c:1648 */
3041 break;
3042
3043 case 124:
3044 #line 1069 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
3045 { (yyval.pattern) = make_pattern_list ((yyvsp[-2].word_list), (COMMAND *)NULL); }
3046 #line 3047 "y.tab.c" /* yacc.c:1648 */
3047 break;
3048
3049 case 125:
3050 #line 1073 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
3051 { (yyval.pattern) = (yyvsp[-1].pattern); }
3052 #line 3053 "y.tab.c" /* yacc.c:1648 */
3053 break;
3054
3055 case 126:
3056 #line 1075 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
3057 { (yyvsp[-1].pattern)->next = (yyvsp[-2].pattern); (yyval.pattern) = (yyvsp[-1].pattern); }
3058 #line 3059 "y.tab.c" /* yacc.c:1648 */
3059 break;
3060
3061 case 127:
3062 #line 1077 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
3063 { (yyvsp[-1].pattern)->flags |= CASEPAT_FALLTHROUGH; (yyval.pattern) = (yyvsp[-1].pattern); }
3064 #line 3065 "y.tab.c" /* yacc.c:1648 */
3065 break;
3066
3067 case 128:
3068 #line 1079 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
3069 { (yyvsp[-1].pattern)->flags |= CASEPAT_FALLTHROUGH; (yyvsp[-1].pattern)->next = (yyvsp[-2].pattern); (yyval.pattern) = (yyvsp[-1].pattern); }
3070 #line 3071 "y.tab.c" /* yacc.c:1648 */
3071 break;
3072
3073 case 129:
3074 #line 1081 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
3075 { (yyvsp[-1].pattern)->flags |= CASEPAT_TESTNEXT; (yyval.pattern) = (yyvsp[-1].pattern); }
3076 #line 3077 "y.tab.c" /* yacc.c:1648 */
3077 break;
3078
3079 case 130:
3080 #line 1083 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
3081 { (yyvsp[-1].pattern)->flags |= CASEPAT_TESTNEXT; (yyvsp[-1].pattern)->next = (yyvsp[-2].pattern); (yyval.pattern) = (yyvsp[-1].pattern); }
3082 #line 3083 "y.tab.c" /* yacc.c:1648 */
3083 break;
3084
3085 case 131:
3086 #line 1087 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
3087 { (yyval.word_list) = make_word_list ((yyvsp[0].word), (WORD_LIST *)NULL); }
3088 #line 3089 "y.tab.c" /* yacc.c:1648 */
3089 break;
3090
3091 case 132:
3092 #line 1089 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
3093 { (yyval.word_list) = make_word_list ((yyvsp[0].word), (yyvsp[-2].word_list)); }
3094 #line 3095 "y.tab.c" /* yacc.c:1648 */
3095 break;
3096
3097 case 133:
3098 #line 1098 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
3099 {
3100 (yyval.command) = (yyvsp[0].command);
3101 if (need_here_doc)
3102 gather_here_documents ();
3103 }
3104 #line 3105 "y.tab.c" /* yacc.c:1648 */
3105 break;
3106
3107 case 135:
3108 #line 1107 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
3109 {
3110 (yyval.command) = (yyvsp[0].command);
3111 }
3112 #line 3113 "y.tab.c" /* yacc.c:1648 */
3113 break;
3114
3115 case 137:
3116 #line 1114 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
3117 {
3118 if ((yyvsp[-2].command)->type == cm_connection)
3119 (yyval.command) = connect_async_list ((yyvsp[-2].command), (COMMAND *)NULL, '&');
3120 else
3121 (yyval.command) = command_connect ((yyvsp[-2].command), (COMMAND *)NULL, '&');
3122 }
3123 #line 3124 "y.tab.c" /* yacc.c:1648 */
3124 break;
3125
3126 case 139:
3127 #line 1125 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
3128 { (yyval.command) = command_connect ((yyvsp[-3].command), (yyvsp[0].command), AND_AND); }
3129 #line 3130 "y.tab.c" /* yacc.c:1648 */
3130 break;
3131
3132 case 140:
3133 #line 1127 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
3134 { (yyval.command) = command_connect ((yyvsp[-3].command), (yyvsp[0].command), OR_OR); }
3135 #line 3136 "y.tab.c" /* yacc.c:1648 */
3136 break;
3137
3138 case 141:
3139 #line 1129 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
3140 {
3141 if ((yyvsp[-3].command)->type == cm_connection)
3142 (yyval.command) = connect_async_list ((yyvsp[-3].command), (yyvsp[0].command), '&');
3143 else
3144 (yyval.command) = command_connect ((yyvsp[-3].command), (yyvsp[0].command), '&');
3145 }
3146 #line 3147 "y.tab.c" /* yacc.c:1648 */
3147 break;
3148
3149 case 142:
3150 #line 1136 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
3151 { (yyval.command) = command_connect ((yyvsp[-3].command), (yyvsp[0].command), ';'); }
3152 #line 3153 "y.tab.c" /* yacc.c:1648 */
3153 break;
3154
3155 case 143:
3156 #line 1138 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
3157 { (yyval.command) = command_connect ((yyvsp[-3].command), (yyvsp[0].command), ';'); }
3158 #line 3159 "y.tab.c" /* yacc.c:1648 */
3159 break;
3160
3161 case 144:
3162 #line 1140 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
3163 { (yyval.command) = (yyvsp[0].command); }
3164 #line 3165 "y.tab.c" /* yacc.c:1648 */
3165 break;
3166
3167 case 147:
3168 #line 1148 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
3169 { (yyval.number) = '\n'; }
3170 #line 3171 "y.tab.c" /* yacc.c:1648 */
3171 break;
3172
3173 case 148:
3174 #line 1150 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
3175 { (yyval.number) = ';'; }
3176 #line 3177 "y.tab.c" /* yacc.c:1648 */
3177 break;
3178
3179 case 149:
3180 #line 1152 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
3181 { (yyval.number) = yacc_EOF; }
3182 #line 3183 "y.tab.c" /* yacc.c:1648 */
3183 break;
3184
3185 case 152:
3186 #line 1166 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
3187 {
3188 (yyval.command) = (yyvsp[0].command);
3189 if (need_here_doc)
3190 gather_here_documents ();
3191 if ((parser_state & PST_CMDSUBST) && current_token == shell_eof_token)
3192 {
3193 global_command = (yyvsp[0].command);
3194 eof_encountered = 0;
3195 rewind_input_string ();
3196 YYACCEPT;
3197 }
3198 }
3199 #line 3200 "y.tab.c" /* yacc.c:1648 */
3200 break;
3201
3202 case 153:
3203 #line 1179 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
3204 {
3205 if ((yyvsp[-1].command)->type == cm_connection)
3206 (yyval.command) = connect_async_list ((yyvsp[-1].command), (COMMAND *)NULL, '&');
3207 else
3208 (yyval.command) = command_connect ((yyvsp[-1].command), (COMMAND *)NULL, '&');
3209 if (need_here_doc)
3210 gather_here_documents ();
3211 if ((parser_state & PST_CMDSUBST) && current_token == shell_eof_token)
3212 {
3213 global_command = (yyvsp[-1].command);
3214 eof_encountered = 0;
3215 rewind_input_string ();
3216 YYACCEPT;
3217 }
3218 }
3219 #line 3220 "y.tab.c" /* yacc.c:1648 */
3220 break;
3221
3222 case 154:
3223 #line 1195 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
3224 {
3225 (yyval.command) = (yyvsp[-1].command);
3226 if (need_here_doc)
3227 gather_here_documents ();
3228 if ((parser_state & PST_CMDSUBST) && current_token == shell_eof_token)
3229 {
3230 global_command = (yyvsp[-1].command);
3231 eof_encountered = 0;
3232 rewind_input_string ();
3233 YYACCEPT;
3234 }
3235 }
3236 #line 3237 "y.tab.c" /* yacc.c:1648 */
3237 break;
3238
3239 case 155:
3240 #line 1210 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
3241 { (yyval.command) = command_connect ((yyvsp[-3].command), (yyvsp[0].command), AND_AND); }
3242 #line 3243 "y.tab.c" /* yacc.c:1648 */
3243 break;
3244
3245 case 156:
3246 #line 1212 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
3247 { (yyval.command) = command_connect ((yyvsp[-3].command), (yyvsp[0].command), OR_OR); }
3248 #line 3249 "y.tab.c" /* yacc.c:1648 */
3249 break;
3250
3251 case 157:
3252 #line 1214 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
3253 {
3254 if ((yyvsp[-2].command)->type == cm_connection)
3255 (yyval.command) = connect_async_list ((yyvsp[-2].command), (yyvsp[0].command), '&');
3256 else
3257 (yyval.command) = command_connect ((yyvsp[-2].command), (yyvsp[0].command), '&');
3258 }
3259 #line 3260 "y.tab.c" /* yacc.c:1648 */
3260 break;
3261
3262 case 158:
3263 #line 1221 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
3264 { (yyval.command) = command_connect ((yyvsp[-2].command), (yyvsp[0].command), ';'); }
3265 #line 3266 "y.tab.c" /* yacc.c:1648 */
3266 break;
3267
3268 case 159:
3269 #line 1224 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
3270 { (yyval.command) = (yyvsp[0].command); }
3271 #line 3272 "y.tab.c" /* yacc.c:1648 */
3272 break;
3273
3274 case 160:
3275 #line 1228 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
3276 { (yyval.command) = (yyvsp[0].command); }
3277 #line 3278 "y.tab.c" /* yacc.c:1648 */
3278 break;
3279
3280 case 161:
3281 #line 1230 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
3282 {
3283 if ((yyvsp[0].command))
3284 (yyvsp[0].command)->flags ^= CMD_INVERT_RETURN; /* toggle */
3285 (yyval.command) = (yyvsp[0].command);
3286 }
3287 #line 3288 "y.tab.c" /* yacc.c:1648 */
3288 break;
3289
3290 case 162:
3291 #line 1236 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
3292 {
3293 if ((yyvsp[0].command))
3294 (yyvsp[0].command)->flags |= (yyvsp[-1].number);
3295 (yyval.command) = (yyvsp[0].command);
3296 }
3297 #line 3298 "y.tab.c" /* yacc.c:1648 */
3298 break;
3299
3300 case 163:
3301 #line 1242 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
3302 {
3303 ELEMENT x;
3304
3305 /* Boy, this is unclean. `time' by itself can
3306 time a null command. We cheat and push a
3307 newline back if the list_terminator was a newline
3308 to avoid the double-newline problem (one to
3309 terminate this, one to terminate the command) */
3310 x.word = 0;
3311 x.redirect = 0;
3312 (yyval.command) = make_simple_command (x, (COMMAND *)NULL);
3313 (yyval.command)->flags |= (yyvsp[-1].number);
3314 /* XXX - let's cheat and push a newline back */
3315 if ((yyvsp[0].number) == '\n')
3316 token_to_read = '\n';
3317 else if ((yyvsp[0].number) == ';')
3318 token_to_read = ';';
3319 parser_state &= ~PST_REDIRLIST; /* make_simple_command sets this */
3320 }
3321 #line 3322 "y.tab.c" /* yacc.c:1648 */
3322 break;
3323
3324 case 164:
3325 #line 1262 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
3326 {
3327 ELEMENT x;
3328
3329 /* This is just as unclean. Posix says that `!'
3330 by itself should be equivalent to `false'.
3331 We cheat and push a
3332 newline back if the list_terminator was a newline
3333 to avoid the double-newline problem (one to
3334 terminate this, one to terminate the command) */
3335 x.word = 0;
3336 x.redirect = 0;
3337 (yyval.command) = make_simple_command (x, (COMMAND *)NULL);
3338 (yyval.command)->flags |= CMD_INVERT_RETURN;
3339 /* XXX - let's cheat and push a newline back */
3340 if ((yyvsp[0].number) == '\n')
3341 token_to_read = '\n';
3342 if ((yyvsp[0].number) == ';')
3343 token_to_read = ';';
3344 parser_state &= ~PST_REDIRLIST; /* make_simple_command sets this */
3345 }
3346 #line 3347 "y.tab.c" /* yacc.c:1648 */
3347 break;
3348
3349 case 165:
3350 #line 1285 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
3351 { (yyval.command) = command_connect ((yyvsp[-3].command), (yyvsp[0].command), '|'); }
3352 #line 3353 "y.tab.c" /* yacc.c:1648 */
3353 break;
3354
3355 case 166:
3356 #line 1287 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
3357 {
3358 /* Make cmd1 |& cmd2 equivalent to cmd1 2>&1 | cmd2 */
3359 COMMAND *tc;
3360 REDIRECTEE rd, sd;
3361 REDIRECT *r;
3362
3363 tc = (yyvsp[-3].command)->type == cm_simple ? (COMMAND *)(yyvsp[-3].command)->value.Simple : (yyvsp[-3].command);
3364 sd.dest = 2;
3365 rd.dest = 1;
3366 r = make_redirection (sd, r_duplicating_output, rd, 0);
3367 if (tc->redirects)
3368 {
3369 register REDIRECT *t;
3370 for (t = tc->redirects; t->next; t = t->next)
3371 ;
3372 t->next = r;
3373 }
3374 else
3375 tc->redirects = r;
3376
3377 (yyval.command) = command_connect ((yyvsp[-3].command), (yyvsp[0].command), '|');
3378 }
3379 #line 3380 "y.tab.c" /* yacc.c:1648 */
3380 break;
3381
3382 case 167:
3383 #line 1310 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
3384 { (yyval.command) = (yyvsp[0].command); }
3385 #line 3386 "y.tab.c" /* yacc.c:1648 */
3386 break;
3387
3388 case 168:
3389 #line 1314 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
3390 { (yyval.number) = CMD_TIME_PIPELINE; }
3391 #line 3392 "y.tab.c" /* yacc.c:1648 */
3392 break;
3393
3394 case 169:
3395 #line 1316 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
3396 { (yyval.number) = CMD_TIME_PIPELINE|CMD_TIME_POSIX; }
3397 #line 3398 "y.tab.c" /* yacc.c:1648 */
3398 break;
3399
3400 case 170:
3401 #line 1318 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1648 */
3402 { (yyval.number) = CMD_TIME_PIPELINE|CMD_TIME_POSIX; }
3403 #line 3404 "y.tab.c" /* yacc.c:1648 */
3404 break;
3405
3406
3407 #line 3408 "y.tab.c" /* yacc.c:1648 */
3408 default: break;
3409 }
3410 /* User semantic actions sometimes alter yychar, and that requires
3411 that yytoken be updated with the new translation. We take the
3412 approach of translating immediately before every use of yytoken.
3413 One alternative is translating here after every semantic action,
3414 but that translation would be missed if the semantic action invokes
3415 YYABORT, YYACCEPT, or YYERROR immediately after altering yychar or
3416 if it invokes YYBACKUP. In the case of YYABORT or YYACCEPT, an
3417 incorrect destructor might then be invoked immediately. In the
3418 case of YYERROR or YYBACKUP, subsequent parser actions might lead
3419 to an incorrect destructor call or verbose syntax error message
3420 before the lookahead is translated. */
3421 YY_SYMBOL_PRINT ("-> $$ =", yyr1[yyn], &yyval, &yyloc);
3422
3423 YYPOPSTACK (yylen);
3424 yylen = 0;
3425 YY_STACK_PRINT (yyss, yyssp);
3426
3427 *++yyvsp = yyval;
3428
3429 /* Now 'shift' the result of the reduction. Determine what state
3430 that goes to, based on the state we popped back to and the rule
3431 number reduced by. */
3432
3433 yyn = yyr1[yyn];
3434
3435 yystate = yypgoto[yyn - YYNTOKENS] + *yyssp;
3436 if (0 <= yystate && yystate <= YYLAST && yycheck[yystate] == *yyssp)
3437 yystate = yytable[yystate];
3438 else
3439 yystate = yydefgoto[yyn - YYNTOKENS];
3440
3441 goto yynewstate;
3442
3443
3444 /*--------------------------------------.
3445 | yyerrlab -- here on detecting error. |
3446 `--------------------------------------*/
3447 yyerrlab:
3448 /* Make sure we have latest lookahead translation. See comments at
3449 user semantic actions for why this is necessary. */
3450 yytoken = yychar == YYEMPTY ? YYEMPTY : YYTRANSLATE (yychar);
3451
3452 /* If not already recovering from an error, report this error. */
3453 if (!yyerrstatus)
3454 {
3455 ++yynerrs;
3456 #if ! YYERROR_VERBOSE
3457 yyerror (YY_("syntax error"));
3458 #else
3459 # define YYSYNTAX_ERROR yysyntax_error (&yymsg_alloc, &yymsg, \
3460 yyssp, yytoken)
3461 {
3462 char const *yymsgp = YY_("syntax error");
3463 int yysyntax_error_status;
3464 yysyntax_error_status = YYSYNTAX_ERROR;
3465 if (yysyntax_error_status == 0)
3466 yymsgp = yymsg;
3467 else if (yysyntax_error_status == 1)
3468 {
3469 if (yymsg != yymsgbuf)
3470 YYSTACK_FREE (yymsg);
3471 yymsg = (char *) YYSTACK_ALLOC (yymsg_alloc);
3472 if (!yymsg)
3473 {
3474 yymsg = yymsgbuf;
3475 yymsg_alloc = sizeof yymsgbuf;
3476 yysyntax_error_status = 2;
3477 }
3478 else
3479 {
3480 yysyntax_error_status = YYSYNTAX_ERROR;
3481 yymsgp = yymsg;
3482 }
3483 }
3484 yyerror (yymsgp);
3485 if (yysyntax_error_status == 2)
3486 goto yyexhaustedlab;
3487 }
3488 # undef YYSYNTAX_ERROR
3489 #endif
3490 }
3491
3492
3493
3494 if (yyerrstatus == 3)
3495 {
3496 /* If just tried and failed to reuse lookahead token after an
3497 error, discard it. */
3498
3499 if (yychar <= YYEOF)
3500 {
3501 /* Return failure if at end of input. */
3502 if (yychar == YYEOF)
3503 YYABORT;
3504 }
3505 else
3506 {
3507 yydestruct ("Error: discarding",
3508 yytoken, &yylval);
3509 yychar = YYEMPTY;
3510 }
3511 }
3512
3513 /* Else will try to reuse lookahead token after shifting the error
3514 token. */
3515 goto yyerrlab1;
3516
3517
3518 /*---------------------------------------------------.
3519 | yyerrorlab -- error raised explicitly by YYERROR. |
3520 `---------------------------------------------------*/
3521 yyerrorlab:
3522
3523 /* Pacify compilers like GCC when the user code never invokes
3524 YYERROR and the label yyerrorlab therefore never appears in user
3525 code. */
3526 if (/*CONSTCOND*/ 0)
3527 goto yyerrorlab;
3528
3529 /* Do not reclaim the symbols of the rule whose action triggered
3530 this YYERROR. */
3531 YYPOPSTACK (yylen);
3532 yylen = 0;
3533 YY_STACK_PRINT (yyss, yyssp);
3534 yystate = *yyssp;
3535 goto yyerrlab1;
3536
3537
3538 /*-------------------------------------------------------------.
3539 | yyerrlab1 -- common code for both syntax error and YYERROR. |
3540 `-------------------------------------------------------------*/
3541 yyerrlab1:
3542 yyerrstatus = 3; /* Each real token shifted decrements this. */
3543
3544 for (;;)
3545 {
3546 yyn = yypact[yystate];
3547 if (!yypact_value_is_default (yyn))
3548 {
3549 yyn += YYTERROR;
3550 if (0 <= yyn && yyn <= YYLAST && yycheck[yyn] == YYTERROR)
3551 {
3552 yyn = yytable[yyn];
3553 if (0 < yyn)
3554 break;
3555 }
3556 }
3557
3558 /* Pop the current state because it cannot handle the error token. */
3559 if (yyssp == yyss)
3560 YYABORT;
3561
3562
3563 yydestruct ("Error: popping",
3564 yystos[yystate], yyvsp);
3565 YYPOPSTACK (1);
3566 yystate = *yyssp;
3567 YY_STACK_PRINT (yyss, yyssp);
3568 }
3569
3570 YY_IGNORE_MAYBE_UNINITIALIZED_BEGIN
3571 *++yyvsp = yylval;
3572 YY_IGNORE_MAYBE_UNINITIALIZED_END
3573
3574
3575 /* Shift the error token. */
3576 YY_SYMBOL_PRINT ("Shifting", yystos[yyn], yyvsp, yylsp);
3577
3578 yystate = yyn;
3579 goto yynewstate;
3580
3581
3582 /*-------------------------------------.
3583 | yyacceptlab -- YYACCEPT comes here. |
3584 `-------------------------------------*/
3585 yyacceptlab:
3586 yyresult = 0;
3587 goto yyreturn;
3588
3589 /*-----------------------------------.
3590 | yyabortlab -- YYABORT comes here. |
3591 `-----------------------------------*/
3592 yyabortlab:
3593 yyresult = 1;
3594 goto yyreturn;
3595
3596 #if !defined yyoverflow || YYERROR_VERBOSE
3597 /*-------------------------------------------------.
3598 | yyexhaustedlab -- memory exhaustion comes here. |
3599 `-------------------------------------------------*/
3600 yyexhaustedlab:
3601 yyerror (YY_("memory exhausted"));
3602 yyresult = 2;
3603 /* Fall through. */
3604 #endif
3605
3606 yyreturn:
3607 if (yychar != YYEMPTY)
3608 {
3609 /* Make sure we have latest lookahead translation. See comments at
3610 user semantic actions for why this is necessary. */
3611 yytoken = YYTRANSLATE (yychar);
3612 yydestruct ("Cleanup: discarding lookahead",
3613 yytoken, &yylval);
3614 }
3615 /* Do not reclaim the symbols of the rule whose action triggered
3616 this YYABORT or YYACCEPT. */
3617 YYPOPSTACK (yylen);
3618 YY_STACK_PRINT (yyss, yyssp);
3619 while (yyssp != yyss)
3620 {
3621 yydestruct ("Cleanup: popping",
3622 yystos[*yyssp], yyvsp);
3623 YYPOPSTACK (1);
3624 }
3625 #ifndef yyoverflow
3626 if (yyss != yyssa)
3627 YYSTACK_FREE (yyss);
3628 #endif
3629 #if YYERROR_VERBOSE
3630 if (yymsg != yymsgbuf)
3631 YYSTACK_FREE (yymsg);
3632 #endif
3633 return yyresult;
3634 }
3635 #line 1320 "/usr/homes/chet/src/bash/src/parse.y" /* yacc.c:1907 */
3636
3637
3638 /* Initial size to allocate for tokens, and the
3639 amount to grow them by. */
3640 #define TOKEN_DEFAULT_INITIAL_SIZE 496
3641 #define TOKEN_DEFAULT_GROW_SIZE 512
3642
3643 /* Should we call prompt_again? */
3644 #define SHOULD_PROMPT() \
3645 (interactive && (bash_input.type == st_stdin || bash_input.type == st_stream))
3646
3647 #if defined (ALIAS)
3648 # define expanding_alias() (pushed_string_list && pushed_string_list->expander)
3649 #else
3650 # define expanding_alias() 0
3651 #endif
3652
3653 /* Global var is non-zero when end of file has been reached. */
3654 int EOF_Reached = 0;
3655
3656 #ifdef DEBUG
3657 static void
3658 debug_parser (i)
3659 int i;
3660 {
3661 #if YYDEBUG != 0
3662 yydebug = i;
3663 yyoutstream = stdout;
3664 yyerrstream = stderr;
3665 #endif
3666 }
3667 #endif
3668
3669 /* yy_getc () returns the next available character from input or EOF.
3670 yy_ungetc (c) makes `c' the next character to read.
3671 init_yy_io (get, unget, type, location) makes the function GET the
3672 installed function for getting the next character, makes UNGET the
3673 installed function for un-getting a character, sets the type of stream
3674 (either string or file) from TYPE, and makes LOCATION point to where
3675 the input is coming from. */
3676
3677 /* Unconditionally returns end-of-file. */
3678 int
3679 return_EOF ()
3680 {
3681 return (EOF);
3682 }
3683
3684 /* Variable containing the current get and unget functions.
3685 See ./input.h for a clearer description. */
3686 BASH_INPUT bash_input;
3687
3688 /* Set all of the fields in BASH_INPUT to NULL. Free bash_input.name if it
3689 is non-null, avoiding a memory leak. */
3690 void
3691 initialize_bash_input ()
3692 {
3693 bash_input.type = st_none;
3694 FREE (bash_input.name);
3695 bash_input.name = (char *)NULL;
3696 bash_input.location.file = (FILE *)NULL;
3697 bash_input.location.string = (char *)NULL;
3698 bash_input.getter = (sh_cget_func_t *)NULL;
3699 bash_input.ungetter = (sh_cunget_func_t *)NULL;
3700 }
3701
3702 /* Set the contents of the current bash input stream from
3703 GET, UNGET, TYPE, NAME, and LOCATION. */
3704 void
3705 init_yy_io (get, unget, type, name, location)
3706 sh_cget_func_t *get;
3707 sh_cunget_func_t *unget;
3708 enum stream_type type;
3709 const char *name;
3710 INPUT_STREAM location;
3711 {
3712 bash_input.type = type;
3713 FREE (bash_input.name);
3714 bash_input.name = name ? savestring (name) : (char *)NULL;
3715
3716 /* XXX */
3717 #if defined (CRAY)
3718 memcpy((char *)&bash_input.location.string, (char *)&location.string, sizeof(location));
3719 #else
3720 bash_input.location = location;
3721 #endif
3722 bash_input.getter = get;
3723 bash_input.ungetter = unget;
3724 }
3725
3726 char *
3727 yy_input_name ()
3728 {
3729 return (bash_input.name ? bash_input.name : "stdin");
3730 }
3731
3732 /* Call this to get the next character of input. */
3733 static int
3734 yy_getc ()
3735 {
3736 return (*(bash_input.getter)) ();
3737 }
3738
3739 /* Call this to unget C. That is, to make C the next character
3740 to be read. */
3741 static int
3742 yy_ungetc (c)
3743 int c;
3744 {
3745 return (*(bash_input.ungetter)) (c);
3746 }
3747
3748 #if defined (BUFFERED_INPUT)
3749 #ifdef INCLUDE_UNUSED
3750 int
3751 input_file_descriptor ()
3752 {
3753 switch (bash_input.type)
3754 {
3755 case st_stream:
3756 return (fileno (bash_input.location.file));
3757 case st_bstream:
3758 return (bash_input.location.buffered_fd);
3759 case st_stdin:
3760 default:
3761 return (fileno (stdin));
3762 }
3763 }
3764 #endif
3765 #endif /* BUFFERED_INPUT */
3766
3767 /* **************************************************************** */
3768 /* */
3769 /* Let input be read from readline (). */
3770 /* */
3771 /* **************************************************************** */
3772
3773 #if defined (READLINE)
3774 char *current_readline_prompt = (char *)NULL;
3775 char *current_readline_line = (char *)NULL;
3776 int current_readline_line_index = 0;
3777
3778 static int
3779 yy_readline_get ()
3780 {
3781 SigHandler *old_sigint;
3782 int line_len;
3783 unsigned char c;
3784
3785 if (current_readline_line == 0)
3786 {
3787 if (bash_readline_initialized == 0)
3788 initialize_readline ();
3789
3790 #if defined (JOB_CONTROL)
3791 if (job_control)
3792 give_terminal_to (shell_pgrp, 0);
3793 #endif /* JOB_CONTROL */
3794
3795 old_sigint = IMPOSSIBLE_TRAP_HANDLER;
3796 if (signal_is_ignored (SIGINT) == 0)
3797 {
3798 /* interrupt_immediately++; */
3799 old_sigint = (SigHandler *)set_signal_handler (SIGINT, sigint_sighandler);
3800 }
3801
3802 sh_unset_nodelay_mode (fileno (rl_instream)); /* just in case */
3803 current_readline_line = readline (current_readline_prompt ?
3804 current_readline_prompt : "");
3805
3806 CHECK_TERMSIG;
3807 if (signal_is_ignored (SIGINT) == 0)
3808 {
3809 /* interrupt_immediately--; */
3810 if (old_sigint != IMPOSSIBLE_TRAP_HANDLER)
3811 set_signal_handler (SIGINT, old_sigint);
3812 }
3813
3814 #if 0
3815 /* Reset the prompt to the decoded value of prompt_string_pointer. */
3816 reset_readline_prompt ();
3817 #endif
3818
3819 if (current_readline_line == 0)
3820 return (EOF);
3821
3822 current_readline_line_index = 0;
3823 line_len = strlen (current_readline_line);
3824
3825 current_readline_line = (char *)xrealloc (current_readline_line, 2 + line_len);
3826 current_readline_line[line_len++] = '\n';
3827 current_readline_line[line_len] = '\0';
3828 }
3829
3830 if (current_readline_line[current_readline_line_index] == 0)
3831 {
3832 free (current_readline_line);
3833 current_readline_line = (char *)NULL;
3834 return (yy_readline_get ());
3835 }
3836 else
3837 {
3838 c = current_readline_line[current_readline_line_index++];
3839 return (c);
3840 }
3841 }
3842
3843 static int
3844 yy_readline_unget (c)
3845 int c;
3846 {
3847 if (current_readline_line_index && current_readline_line)
3848 current_readline_line[--current_readline_line_index] = c;
3849 return (c);
3850 }
3851
3852 void
3853 with_input_from_stdin ()
3854 {
3855 INPUT_STREAM location;
3856
3857 if (bash_input.type != st_stdin && stream_on_stack (st_stdin) == 0)
3858 {
3859 location.string = current_readline_line;
3860 init_yy_io (yy_readline_get, yy_readline_unget,
3861 st_stdin, "readline stdin", location);
3862 }
3863 }
3864
3865 #else /* !READLINE */
3866
3867 void
3868 with_input_from_stdin ()
3869 {
3870 with_input_from_stream (stdin, "stdin");
3871 }
3872 #endif /* !READLINE */
3873
3874 /* **************************************************************** */
3875 /* */
3876 /* Let input come from STRING. STRING is zero terminated. */
3877 /* */
3878 /* **************************************************************** */
3879
3880 static int
3881 yy_string_get ()
3882 {
3883 register char *string;
3884 register unsigned char c;
3885
3886 string = bash_input.location.string;
3887
3888 /* If the string doesn't exist, or is empty, EOF found. */
3889 if (string && *string)
3890 {
3891 c = *string++;
3892 bash_input.location.string = string;
3893 return (c);
3894 }
3895 else
3896 return (EOF);
3897 }
3898
3899 static int
3900 yy_string_unget (c)
3901 int c;
3902 {
3903 *(--bash_input.location.string) = c;
3904 return (c);
3905 }
3906
3907 void
3908 with_input_from_string (string, name)
3909 char *string;
3910 const char *name;
3911 {
3912 INPUT_STREAM location;
3913
3914 location.string = string;
3915 init_yy_io (yy_string_get, yy_string_unget, st_string, name, location);
3916 }
3917
3918 /* Count the number of characters we've consumed from bash_input.location.string
3919 and read into shell_input_line, but have not returned from shell_getc.
3920 That is the true input location. Rewind bash_input.location.string by
3921 that number of characters, so it points to the last character actually
3922 consumed by the parser. */
3923 static void
3924 rewind_input_string ()
3925 {
3926 int xchars;
3927
3928 /* number of unconsumed characters in the input -- XXX need to take newlines
3929 into account, e.g., $(...\n) */
3930 xchars = shell_input_line_len - shell_input_line_index;
3931 if (bash_input.location.string[-1] == '\n')
3932 xchars++;
3933
3934 /* XXX - how to reflect bash_input.location.string back to string passed to
3935 parse_and_execute or xparse_dolparen? xparse_dolparen needs to know how
3936 far into the string we parsed. parse_and_execute knows where bash_input.
3937 location.string is, and how far from orig_string that is -- that's the
3938 number of characters the command consumed. */
3939
3940 /* bash_input.location.string - xchars should be where we parsed to */
3941 /* need to do more validation on xchars value for sanity -- test cases. */
3942 bash_input.location.string -= xchars;
3943 }
3944
3945 /* **************************************************************** */
3946 /* */
3947 /* Let input come from STREAM. */
3948 /* */
3949 /* **************************************************************** */
3950
3951 /* These two functions used to test the value of the HAVE_RESTARTABLE_SYSCALLS
3952 define, and just use getc/ungetc if it was defined, but since bash
3953 installs its signal handlers without the SA_RESTART flag, some signals
3954 (like SIGCHLD, SIGWINCH, etc.) received during a read(2) will not cause
3955 the read to be restarted. We need to restart it ourselves. */
3956
3957 static int
3958 yy_stream_get ()
3959 {
3960 int result;
3961
3962 result = EOF;
3963 if (bash_input.location.file)
3964 {
3965 /* XXX - don't need terminate_immediately; getc_with_restart checks
3966 for terminating signals itself if read returns < 0 */
3967 result = getc_with_restart (bash_input.location.file);
3968 }
3969 return (result);
3970 }
3971
3972 static int
3973 yy_stream_unget (c)
3974 int c;
3975 {
3976 return (ungetc_with_restart (c, bash_input.location.file));
3977 }
3978
3979 void
3980 with_input_from_stream (stream, name)
3981 FILE *stream;
3982 const char *name;
3983 {
3984 INPUT_STREAM location;
3985
3986 location.file = stream;
3987 init_yy_io (yy_stream_get, yy_stream_unget, st_stream, name, location);
3988 }
3989
3990 typedef struct stream_saver {
3991 struct stream_saver *next;
3992 BASH_INPUT bash_input;
3993 int line;
3994 #if defined (BUFFERED_INPUT)
3995 BUFFERED_STREAM *bstream;
3996 #endif /* BUFFERED_INPUT */
3997 } STREAM_SAVER;
3998
3999 /* The globally known line number. */
4000 int line_number = 0;
4001
4002 /* The line number offset set by assigning to LINENO. Not currently used. */
4003 int line_number_base = 0;
4004
4005 #if defined (COND_COMMAND)
4006 static int cond_lineno;
4007 static int cond_token;
4008 #endif
4009
4010 STREAM_SAVER *stream_list = (STREAM_SAVER *)NULL;
4011
4012 void
4013 push_stream (reset_lineno)
4014 int reset_lineno;
4015 {
4016 STREAM_SAVER *saver = (STREAM_SAVER *)xmalloc (sizeof (STREAM_SAVER));
4017
4018 xbcopy ((char *)&bash_input, (char *)&(saver->bash_input), sizeof (BASH_INPUT));
4019
4020 #if defined (BUFFERED_INPUT)
4021 saver->bstream = (BUFFERED_STREAM *)NULL;
4022 /* If we have a buffered stream, clear out buffers[fd]. */
4023 if (bash_input.type == st_bstream && bash_input.location.buffered_fd >= 0)
4024 saver->bstream = set_buffered_stream (bash_input.location.buffered_fd,
4025 (BUFFERED_STREAM *)NULL);
4026 #endif /* BUFFERED_INPUT */
4027
4028 saver->line = line_number;
4029 bash_input.name = (char *)NULL;
4030 saver->next = stream_list;
4031 stream_list = saver;
4032 EOF_Reached = 0;
4033 if (reset_lineno)
4034 line_number = 0;
4035 }
4036
4037 void
4038 pop_stream ()
4039 {
4040 if (!stream_list)
4041 EOF_Reached = 1;
4042 else
4043 {
4044 STREAM_SAVER *saver = stream_list;
4045
4046 EOF_Reached = 0;
4047 stream_list = stream_list->next;
4048
4049 init_yy_io (saver->bash_input.getter,
4050 saver->bash_input.ungetter,
4051 saver->bash_input.type,
4052 saver->bash_input.name,
4053 saver->bash_input.location);
4054
4055 #if defined (BUFFERED_INPUT)
4056 /* If we have a buffered stream, restore buffers[fd]. */
4057 /* If the input file descriptor was changed while this was on the
4058 save stack, update the buffered fd to the new file descriptor and
4059 re-establish the buffer <-> bash_input fd correspondence. */
4060 if (bash_input.type == st_bstream && bash_input.location.buffered_fd >= 0)
4061 {
4062 if (bash_input_fd_changed)
4063 {
4064 bash_input_fd_changed = 0;
4065 if (default_buffered_input >= 0)
4066 {
4067 bash_input.location.buffered_fd = default_buffered_input;
4068 saver->bstream->b_fd = default_buffered_input;
4069 SET_CLOSE_ON_EXEC (default_buffered_input);
4070 }
4071 }
4072 /* XXX could free buffered stream returned as result here. */
4073 set_buffered_stream (bash_input.location.buffered_fd, saver->bstream);
4074 }
4075 #endif /* BUFFERED_INPUT */
4076
4077 line_number = saver->line;
4078
4079 FREE (saver->bash_input.name);
4080 free (saver);
4081 }
4082 }
4083
4084 /* Return 1 if a stream of type TYPE is saved on the stack. */
4085 int
4086 stream_on_stack (type)
4087 enum stream_type type;
4088 {
4089 register STREAM_SAVER *s;
4090
4091 for (s = stream_list; s; s = s->next)
4092 if (s->bash_input.type == type)
4093 return 1;
4094 return 0;
4095 }
4096
4097 /* Save the current token state and return it in a malloced array. */
4098 int *
4099 save_token_state ()
4100 {
4101 int *ret;
4102
4103 ret = (int *)xmalloc (4 * sizeof (int));
4104 ret[0] = last_read_token;
4105 ret[1] = token_before_that;
4106 ret[2] = two_tokens_ago;
4107 ret[3] = current_token;
4108 return ret;
4109 }
4110
4111 void
4112 restore_token_state (ts)
4113 int *ts;
4114 {
4115 if (ts == 0)
4116 return;
4117 last_read_token = ts[0];
4118 token_before_that = ts[1];
4119 two_tokens_ago = ts[2];
4120 current_token = ts[3];
4121 }
4122
4123 /*
4124 * This is used to inhibit alias expansion and reserved word recognition
4125 * inside case statement pattern lists. A `case statement pattern list' is:
4126 *
4127 * everything between the `in' in a `case word in' and the next ')'
4128 * or `esac'
4129 * everything between a `;;' and the next `)' or `esac'
4130 */
4131
4132 #if defined (ALIAS) || defined (DPAREN_ARITHMETIC)
4133
4134 #define END_OF_ALIAS 0
4135
4136 /*
4137 * Pseudo-global variables used in implementing token-wise alias expansion.
4138 */
4139
4140 /*
4141 * Pushing and popping strings. This works together with shell_getc to
4142 * implement alias expansion on a per-token basis.
4143 */
4144
4145 #define PSH_ALIAS 0x01
4146 #define PSH_DPAREN 0x02
4147 #define PSH_SOURCE 0x04
4148
4149 typedef struct string_saver {
4150 struct string_saver *next;
4151 int expand_alias; /* Value to set expand_alias to when string is popped. */
4152 char *saved_line;
4153 #if defined (ALIAS)
4154 alias_t *expander; /* alias that caused this line to be pushed. */
4155 #endif
4156 size_t saved_line_size, saved_line_index;
4157 int saved_line_terminator;
4158 int flags;
4159 } STRING_SAVER;
4160
4161 STRING_SAVER *pushed_string_list = (STRING_SAVER *)NULL;
4162
4163 /*
4164 * Push the current shell_input_line onto a stack of such lines and make S
4165 * the current input. Used when expanding aliases. EXPAND is used to set
4166 * the value of expand_next_token when the string is popped, so that the
4167 * word after the alias in the original line is handled correctly when the
4168 * alias expands to multiple words. TOKEN is the token that was expanded
4169 * into S; it is saved and used to prevent infinite recursive expansion.
4170 */
4171 static void
4172 push_string (s, expand, ap)
4173 char *s;
4174 int expand;
4175 alias_t *ap;
4176 {
4177 STRING_SAVER *temp = (STRING_SAVER *)xmalloc (sizeof (STRING_SAVER));
4178
4179 temp->expand_alias = expand;
4180 temp->saved_line = shell_input_line;
4181 temp->saved_line_size = shell_input_line_size;
4182 temp->saved_line_index = shell_input_line_index;
4183 temp->saved_line_terminator = shell_input_line_terminator;
4184 temp->flags = 0;
4185 #if defined (ALIAS)
4186 temp->expander = ap;
4187 if (ap)
4188 temp->flags = PSH_ALIAS;
4189 #endif
4190 temp->next = pushed_string_list;
4191 pushed_string_list = temp;
4192
4193 #if defined (ALIAS)
4194 if (ap)
4195 ap->flags |= AL_BEINGEXPANDED;
4196 #endif
4197
4198 shell_input_line = s;
4199 shell_input_line_size = STRLEN (s);
4200 shell_input_line_index = 0;
4201 shell_input_line_terminator = '\0';
4202 #if 0
4203 parser_state &= ~PST_ALEXPNEXT; /* XXX */
4204 #endif
4205
4206 set_line_mbstate ();
4207 }
4208
4209 /*
4210 * Make the top of the pushed_string stack be the current shell input.
4211 * Only called when there is something on the stack. Called from shell_getc
4212 * when it thinks it has consumed the string generated by an alias expansion
4213 * and needs to return to the original input line.
4214 */
4215 static void
4216 pop_string ()
4217 {
4218 STRING_SAVER *t;
4219
4220 FREE (shell_input_line);
4221 shell_input_line = pushed_string_list->saved_line;
4222 shell_input_line_index = pushed_string_list->saved_line_index;
4223 shell_input_line_size = pushed_string_list->saved_line_size;
4224 shell_input_line_terminator = pushed_string_list->saved_line_terminator;
4225
4226 if (pushed_string_list->expand_alias)
4227 parser_state |= PST_ALEXPNEXT;
4228 else
4229 parser_state &= ~PST_ALEXPNEXT;
4230
4231 t = pushed_string_list;
4232 pushed_string_list = pushed_string_list->next;
4233
4234 #if defined (ALIAS)
4235 if (t->expander)
4236 t->expander->flags &= ~AL_BEINGEXPANDED;
4237 #endif
4238
4239 free ((char *)t);
4240
4241 set_line_mbstate ();
4242 }
4243
4244 static void
4245 free_string_list ()
4246 {
4247 register STRING_SAVER *t, *t1;
4248
4249 for (t = pushed_string_list; t; )
4250 {
4251 t1 = t->next;
4252 FREE (t->saved_line);
4253 #if defined (ALIAS)
4254 if (t->expander)
4255 t->expander->flags &= ~AL_BEINGEXPANDED;
4256 #endif
4257 free ((char *)t);
4258 t = t1;
4259 }
4260 pushed_string_list = (STRING_SAVER *)NULL;
4261 }
4262
4263 #endif /* ALIAS || DPAREN_ARITHMETIC */
4264
4265 void
4266 free_pushed_string_input ()
4267 {
4268 #if defined (ALIAS) || defined (DPAREN_ARITHMETIC)
4269 free_string_list ();
4270 #endif
4271 }
4272
4273 int
4274 parser_expanding_alias ()
4275 {
4276 return (expanding_alias ());
4277 }
4278
4279 void
4280 parser_save_alias ()
4281 {
4282 #if defined (ALIAS) || defined (DPAREN_ARITHMETIC)
4283 push_string ((char *)NULL, 0, (alias_t *)NULL);
4284 pushed_string_list->flags = PSH_SOURCE; /* XXX - for now */
4285 #else
4286 ;
4287 #endif
4288 }
4289
4290 void
4291 parser_restore_alias ()
4292 {
4293 #if defined (ALIAS) || defined (DPAREN_ARITHMETIC)
4294 if (pushed_string_list)
4295 pop_string ();
4296 #else
4297 ;
4298 #endif
4299 }
4300
4301 #if defined (ALIAS)
4302 /* Before freeing AP, make sure that there aren't any cases of pointer
4303 aliasing that could cause us to reference freed memory later on. */
4304 void
4305 clear_string_list_expander (ap)
4306 alias_t *ap;
4307 {
4308 register STRING_SAVER *t;
4309
4310 for (t = pushed_string_list; t; t = t->next)
4311 {
4312 if (t->expander && t->expander == ap)
4313 t->expander = 0;
4314 }
4315 }
4316 #endif
4317
4318 void
4319 clear_shell_input_line ()
4320 {
4321 if (shell_input_line)
4322 shell_input_line[shell_input_line_index = 0] = '\0';
4323 }
4324
4325 /* Return a line of text, taken from wherever yylex () reads input.
4326 If there is no more input, then we return NULL. If REMOVE_QUOTED_NEWLINE
4327 is non-zero, we remove unquoted \<newline> pairs. This is used by
4328 read_secondary_line to read here documents. */
4329 static char *
4330 read_a_line (remove_quoted_newline)
4331 int remove_quoted_newline;
4332 {
4333 static char *line_buffer = (char *)NULL;
4334 static int buffer_size = 0;
4335 int indx, c, peekc, pass_next;
4336
4337 #if defined (READLINE)
4338 if (no_line_editing && SHOULD_PROMPT ())
4339 #else
4340 if (SHOULD_PROMPT ())
4341 #endif
4342 print_prompt ();
4343
4344 pass_next = indx = 0;
4345 while (1)
4346 {
4347 /* Allow immediate exit if interrupted during input. */
4348 QUIT;
4349
4350 c = yy_getc ();
4351
4352 /* Ignore null bytes in input. */
4353 if (c == 0)
4354 {
4355 #if 0
4356 internal_warning ("read_a_line: ignored null byte in input");
4357 #endif
4358 continue;
4359 }
4360
4361 /* If there is no more input, then we return NULL. */
4362 if (c == EOF)
4363 {
4364 if (interactive && bash_input.type == st_stream)
4365 clearerr (stdin);
4366 if (indx == 0)
4367 return ((char *)NULL);
4368 c = '\n';
4369 }
4370
4371 /* `+2' in case the final character in the buffer is a newline or we
4372 have to handle CTLESC or CTLNUL. */
4373 RESIZE_MALLOCED_BUFFER (line_buffer, indx, 2, buffer_size, 128);
4374
4375 /* IF REMOVE_QUOTED_NEWLINES is non-zero, we are reading a
4376 here document with an unquoted delimiter. In this case,
4377 the line will be expanded as if it were in double quotes.
4378 We allow a backslash to escape the next character, but we
4379 need to treat the backslash specially only if a backslash
4380 quoting a backslash-newline pair appears in the line. */
4381 if (pass_next)
4382 {
4383 line_buffer[indx++] = c;
4384 pass_next = 0;
4385 }
4386 else if (c == '\\' && remove_quoted_newline)
4387 {
4388 QUIT;
4389 peekc = yy_getc ();
4390 if (peekc == '\n')
4391 {
4392 line_number++;
4393 continue; /* Make the unquoted \<newline> pair disappear. */
4394 }
4395 else
4396 {
4397 yy_ungetc (peekc);
4398 pass_next = 1;
4399 line_buffer[indx++] = c; /* Preserve the backslash. */
4400 }
4401 }
4402 else
4403 {
4404 /* remove_quoted_newline is non-zero if the here-document delimiter
4405 is unquoted. In this case, we will be expanding the lines and
4406 need to make sure CTLESC and CTLNUL in the input are quoted. */
4407 if (remove_quoted_newline && (c == CTLESC || c == CTLNUL))
4408 line_buffer[indx++] = CTLESC;
4409 line_buffer[indx++] = c;
4410 }
4411
4412 if (c == '\n')
4413 {
4414 line_buffer[indx] = '\0';
4415 return (line_buffer);
4416 }
4417 }
4418 }
4419
4420 /* Return a line as in read_a_line (), but insure that the prompt is
4421 the secondary prompt. This is used to read the lines of a here
4422 document. REMOVE_QUOTED_NEWLINE is non-zero if we should remove
4423 newlines quoted with backslashes while reading the line. It is
4424 non-zero unless the delimiter of the here document was quoted. */
4425 char *
4426 read_secondary_line (remove_quoted_newline)
4427 int remove_quoted_newline;
4428 {
4429 char *ret;
4430 int n, c;
4431
4432 prompt_string_pointer = &ps2_prompt;
4433 if (SHOULD_PROMPT())
4434 prompt_again ();
4435 ret = read_a_line (remove_quoted_newline);
4436 #if defined (HISTORY)
4437 if (ret && remember_on_history && (parser_state & PST_HEREDOC))
4438 {
4439 /* To make adding the here-document body right, we need to rely on
4440 history_delimiting_chars() returning \n for the first line of the
4441 here-document body and the null string for the second and subsequent
4442 lines, so we avoid double newlines.
4443 current_command_line_count == 2 for the first line of the body. */
4444
4445 current_command_line_count++;
4446 maybe_add_history (ret);
4447 }
4448 #endif /* HISTORY */
4449 return ret;
4450 }
4451
4452 /* **************************************************************** */
4453 /* */
4454 /* YYLEX () */
4455 /* */
4456 /* **************************************************************** */
4457
4458 /* Reserved words. These are only recognized as the first word of a
4459 command. */
4460 STRING_INT_ALIST word_token_alist[] = {
4461 { "if", IF },
4462 { "then", THEN },
4463 { "else", ELSE },
4464 { "elif", ELIF },
4465 { "fi", FI },
4466 { "case", CASE },
4467 { "esac", ESAC },
4468 { "for", FOR },
4469 #if defined (SELECT_COMMAND)
4470 { "select", SELECT },
4471 #endif
4472 { "while", WHILE },
4473 { "until", UNTIL },
4474 { "do", DO },
4475 { "done", DONE },
4476 { "in", IN },
4477 { "function", FUNCTION },
4478 #if defined (COMMAND_TIMING)
4479 { "time", TIME },
4480 #endif
4481 { "{", '{' },
4482 { "}", '}' },
4483 { "!", BANG },
4484 #if defined (COND_COMMAND)
4485 { "[[", COND_START },
4486 { "]]", COND_END },
4487 #endif
4488 #if defined (COPROCESS_SUPPORT)
4489 { "coproc", COPROC },
4490 #endif
4491 { (char *)NULL, 0}
4492 };
4493
4494 /* other tokens that can be returned by read_token() */
4495 STRING_INT_ALIST other_token_alist[] = {
4496 /* Multiple-character tokens with special values */
4497 { "--", TIMEIGN },
4498 { "-p", TIMEOPT },
4499 { "&&", AND_AND },
4500 { "||", OR_OR },
4501 { ">>", GREATER_GREATER },
4502 { "<<", LESS_LESS },
4503 { "<&", LESS_AND },
4504 { ">&", GREATER_AND },
4505 { ";;", SEMI_SEMI },
4506 { ";&", SEMI_AND },
4507 { ";;&", SEMI_SEMI_AND },
4508 { "<<-", LESS_LESS_MINUS },
4509 { "<<<", LESS_LESS_LESS },
4510 { "&>", AND_GREATER },
4511 { "&>>", AND_GREATER_GREATER },
4512 { "<>", LESS_GREATER },
4513 { ">|", GREATER_BAR },
4514 { "|&", BAR_AND },
4515 { "EOF", yacc_EOF },
4516 /* Tokens whose value is the character itself */
4517 { ">", '>' },
4518 { "<", '<' },
4519 { "-", '-' },
4520 { "{", '{' },
4521 { "}", '}' },
4522 { ";", ';' },
4523 { "(", '(' },
4524 { ")", ')' },
4525 { "|", '|' },
4526 { "&", '&' },
4527 { "newline", '\n' },
4528 { (char *)NULL, 0}
4529 };
4530
4531 /* others not listed here:
4532 WORD look at yylval.word
4533 ASSIGNMENT_WORD look at yylval.word
4534 NUMBER look at yylval.number
4535 ARITH_CMD look at yylval.word_list
4536 ARITH_FOR_EXPRS look at yylval.word_list
4537 COND_CMD look at yylval.command
4538 */
4539
4540 /* These are used by read_token_word, but appear up here so that shell_getc
4541 can use them to decide when to add otherwise blank lines to the history. */
4542
4543 /* The primary delimiter stack. */
4544 struct dstack dstack = { (char *)NULL, 0, 0 };
4545
4546 /* A temporary delimiter stack to be used when decoding prompt strings.
4547 This is needed because command substitutions in prompt strings (e.g., PS2)
4548 can screw up the parser's quoting state. */
4549 static struct dstack temp_dstack = { (char *)NULL, 0, 0 };
4550
4551 /* Macro for accessing the top delimiter on the stack. Returns the
4552 delimiter or zero if none. */
4553 #define current_delimiter(ds) \
4554 (ds.delimiter_depth ? ds.delimiters[ds.delimiter_depth - 1] : 0)
4555
4556 #define push_delimiter(ds, character) \
4557 do \
4558 { \
4559 if (ds.delimiter_depth + 2 > ds.delimiter_space) \
4560 ds.delimiters = (char *)xrealloc \
4561 (ds.delimiters, (ds.delimiter_space += 10) * sizeof (char)); \
4562 ds.delimiters[ds.delimiter_depth] = character; \
4563 ds.delimiter_depth++; \
4564 } \
4565 while (0)
4566
4567 #define pop_delimiter(ds) ds.delimiter_depth--
4568
4569 /* Return the next shell input character. This always reads characters
4570 from shell_input_line; when that line is exhausted, it is time to
4571 read the next line. This is called by read_token when the shell is
4572 processing normal command input. */
4573
4574 /* This implements one-character lookahead/lookbehind across physical input
4575 lines, to avoid something being lost because it's pushed back with
4576 shell_ungetc when we're at the start of a line. */
4577 static int eol_ungetc_lookahead = 0;
4578
4579 static int
4580 shell_getc (remove_quoted_newline)
4581 int remove_quoted_newline;
4582 {
4583 register int i;
4584 int c, truncating, last_was_backslash;
4585 unsigned char uc;
4586
4587 QUIT;
4588
4589 last_was_backslash = 0;
4590 if (sigwinch_received)
4591 {
4592 sigwinch_received = 0;
4593 get_new_window_size (0, (int *)0, (int *)0);
4594 }
4595
4596 if (eol_ungetc_lookahead)
4597 {
4598 c = eol_ungetc_lookahead;
4599 eol_ungetc_lookahead = 0;
4600 return (c);
4601 }
4602
4603 #if defined (ALIAS) || defined (DPAREN_ARITHMETIC)
4604 /* If shell_input_line[shell_input_line_index] == 0, but there is
4605 something on the pushed list of strings, then we don't want to go
4606 off and get another line. We let the code down below handle it. */
4607
4608 if (!shell_input_line || ((!shell_input_line[shell_input_line_index]) &&
4609 (pushed_string_list == (STRING_SAVER *)NULL)))
4610 #else /* !ALIAS && !DPAREN_ARITHMETIC */
4611 if (!shell_input_line || !shell_input_line[shell_input_line_index])
4612 #endif /* !ALIAS && !DPAREN_ARITHMETIC */
4613 {
4614 line_number++;
4615
4616 /* Let's not let one really really long line blow up memory allocation */
4617 if (shell_input_line && shell_input_line_size >= 32768)
4618 {
4619 free (shell_input_line);
4620 shell_input_line = 0;
4621 shell_input_line_size = 0;
4622 }
4623
4624 restart_read:
4625
4626 /* Allow immediate exit if interrupted during input. */
4627 QUIT;
4628
4629 i = truncating = 0;
4630 shell_input_line_terminator = 0;
4631
4632 /* If the shell is interatctive, but not currently printing a prompt
4633 (interactive_shell && interactive == 0), we don't want to print
4634 notifies or cleanup the jobs -- we want to defer it until we do
4635 print the next prompt. */
4636 if (interactive_shell == 0 || SHOULD_PROMPT())
4637 {
4638 #if defined (JOB_CONTROL)
4639 /* This can cause a problem when reading a command as the result
4640 of a trap, when the trap is called from flush_child. This call
4641 had better not cause jobs to disappear from the job table in
4642 that case, or we will have big trouble. */
4643 notify_and_cleanup ();
4644 #else /* !JOB_CONTROL */
4645 cleanup_dead_jobs ();
4646 #endif /* !JOB_CONTROL */
4647 }
4648
4649 #if defined (READLINE)
4650 if (no_line_editing && SHOULD_PROMPT())
4651 #else
4652 if (SHOULD_PROMPT())
4653 #endif
4654 print_prompt ();
4655
4656 if (bash_input.type == st_stream)
4657 clearerr (stdin);
4658
4659 while (1)
4660 {
4661 c = yy_getc ();
4662
4663 /* Allow immediate exit if interrupted during input. */
4664 QUIT;
4665
4666 if (c == '\0')
4667 {
4668 #if 0
4669 internal_warning ("shell_getc: ignored null byte in input");
4670 #endif
4671 /* If we get EOS while parsing a string, treat it as EOF so we
4672 don't just keep looping. Happens very rarely */
4673 if (bash_input.type == st_string)
4674 {
4675 if (i == 0)
4676 shell_input_line_terminator = EOF;
4677 shell_input_line[i] = '\0';
4678 c = EOF;
4679 break;
4680 }
4681 continue;
4682 }
4683
4684 /* Theoretical overflow */
4685 /* If we can't put 256 bytes more into the buffer, allocate
4686 everything we can and fill it as full as we can. */
4687 /* XXX - we ignore rest of line using `truncating' flag */
4688 if (shell_input_line_size > (SIZE_MAX - 256))
4689 {
4690 size_t n;
4691
4692 n = SIZE_MAX - i; /* how much more can we put into the buffer? */
4693 if (n <= 2) /* we have to save 1 for the newline added below */
4694 {
4695 if (truncating == 0)
4696 internal_warning(_("shell_getc: shell_input_line_size (%zu) exceeds SIZE_MAX (%lu): line truncated"), shell_input_line_size, (unsigned long)SIZE_MAX);
4697 shell_input_line[i] = '\0';
4698 truncating = 1;
4699 }
4700 if (shell_input_line_size < SIZE_MAX)
4701 {
4702 shell_input_line_size = SIZE_MAX;
4703 shell_input_line = xrealloc (shell_input_line, shell_input_line_size);
4704 }
4705 }
4706 else
4707 RESIZE_MALLOCED_BUFFER (shell_input_line, i, 2, shell_input_line_size, 256);
4708
4709 if (c == EOF)
4710 {
4711 if (bash_input.type == st_stream)
4712 clearerr (stdin);
4713
4714 if (i == 0)
4715 shell_input_line_terminator = EOF;
4716
4717 shell_input_line[i] = '\0';
4718 break;
4719 }
4720
4721 if (truncating == 0 || c == '\n')
4722 shell_input_line[i++] = c;
4723
4724 if (c == '\n')
4725 {
4726 shell_input_line[--i] = '\0';
4727 current_command_line_count++;
4728 break;
4729 }
4730
4731 last_was_backslash = last_was_backslash == 0 && c == '\\';
4732 }
4733
4734 shell_input_line_index = 0;
4735 shell_input_line_len = i; /* == strlen (shell_input_line) */
4736
4737 set_line_mbstate ();
4738
4739 #if defined (HISTORY)
4740 if (remember_on_history && shell_input_line && shell_input_line[0])
4741 {
4742 char *expansions;
4743 # if defined (BANG_HISTORY)
4744 /* If the current delimiter is a single quote, we should not be
4745 performing history expansion, even if we're on a different
4746 line from the original single quote. */
4747 if (current_delimiter (dstack) == '\'')
4748 history_quoting_state = '\'';
4749 else if (current_delimiter (dstack) == '"')
4750 history_quoting_state = '"';
4751 else
4752 history_quoting_state = 0;
4753 # endif
4754 /* Calling with a third argument of 1 allows remember_on_history to
4755 determine whether or not the line is saved to the history list */
4756 expansions = pre_process_line (shell_input_line, 1, 1);
4757 # if defined (BANG_HISTORY)
4758 history_quoting_state = 0;
4759 # endif
4760 if (expansions != shell_input_line)
4761 {
4762 free (shell_input_line);
4763 shell_input_line = expansions;
4764 shell_input_line_len = shell_input_line ?
4765 strlen (shell_input_line) : 0;
4766 if (shell_input_line_len == 0)
4767 current_command_line_count--;
4768
4769 /* We have to force the xrealloc below because we don't know
4770 the true allocated size of shell_input_line anymore. */
4771 shell_input_line_size = shell_input_line_len;
4772
4773 set_line_mbstate ();
4774 }
4775 }
4776 /* Try to do something intelligent with blank lines encountered while
4777 entering multi-line commands. XXX - this is grotesque */
4778 else if (remember_on_history && shell_input_line &&
4779 shell_input_line[0] == '\0' &&
4780 current_command_line_count > 1)
4781 {
4782 if (current_delimiter (dstack))
4783 /* We know shell_input_line[0] == 0 and we're reading some sort of
4784 quoted string. This means we've got a line consisting of only
4785 a newline in a quoted string. We want to make sure this line
4786 gets added to the history. */
4787 maybe_add_history (shell_input_line);
4788 else
4789 {
4790 char *hdcs;
4791 hdcs = history_delimiting_chars (shell_input_line);
4792 if (hdcs && hdcs[0] == ';')
4793 maybe_add_history (shell_input_line);
4794 }
4795 }
4796
4797 #endif /* HISTORY */
4798
4799 if (shell_input_line)
4800 {
4801 /* Lines that signify the end of the shell's input should not be
4802 echoed. We should not echo lines while parsing command
4803 substitutions with recursive calls into the parsing engine; those
4804 should only be echoed once when we read the word. That is the
4805 reason for the test against shell_eof_token, which is set to a
4806 right paren when parsing the contents of command substitutions. */
4807 if (echo_input_at_read && (shell_input_line[0] ||
4808 shell_input_line_terminator != EOF) &&
4809 shell_eof_token == 0)
4810 fprintf (stderr, "%s\n", shell_input_line);
4811 }
4812 else
4813 {
4814 shell_input_line_size = 0;
4815 prompt_string_pointer = &current_prompt_string;
4816 if (SHOULD_PROMPT ())
4817 prompt_again ();
4818 goto restart_read;
4819 }
4820
4821 /* Add the newline to the end of this string, iff the string does
4822 not already end in an EOF character. */
4823 if (shell_input_line_terminator != EOF)
4824 {
4825 if (shell_input_line_size < SIZE_MAX-3 && (shell_input_line_len+3 > shell_input_line_size))
4826 shell_input_line = (char *)xrealloc (shell_input_line,
4827 1 + (shell_input_line_size += 2));
4828
4829 /* Don't add a newline to a string that ends with a backslash if we're
4830 going to be removing quoted newlines, since that will eat the
4831 backslash. Add another backslash instead (will be removed by
4832 word expansion). */
4833 if (bash_input.type == st_string && expanding_alias() == 0 && last_was_backslash && c == EOF && remove_quoted_newline)
4834 shell_input_line[shell_input_line_len] = '\\';
4835 else
4836 shell_input_line[shell_input_line_len] = '\n';
4837 shell_input_line[shell_input_line_len + 1] = '\0';
4838
4839 set_line_mbstate ();
4840 }
4841 }
4842
4843 next_alias_char:
4844 uc = shell_input_line[shell_input_line_index];
4845
4846 if (uc)
4847 shell_input_line_index++;
4848
4849 #if defined (ALIAS) || defined (DPAREN_ARITHMETIC)
4850 /* If UC is NULL, we have reached the end of the current input string. If
4851 pushed_string_list is non-empty, it's time to pop to the previous string
4852 because we have fully consumed the result of the last alias expansion.
4853 Do it transparently; just return the next character of the string popped
4854 to. */
4855 /* If pushed_string_list != 0 but pushed_string_list->expander == 0 (not
4856 currently tested) and the flags value is not PSH_SOURCE, we are not
4857 parsing an alias, we have just saved one (push_string, when called by
4858 the parse_dparen code) In this case, just go on as well. The PSH_SOURCE
4859 case is handled below. */
4860
4861 /* If we're at the end of an alias expansion add a space to make sure that
4862 the alias remains marked as being in use while we expand its last word.
4863 This makes sure that pop_string doesn't mark the alias as not in use
4864 before the string resulting from the alias expansion is tokenized and
4865 checked for alias expansion, preventing recursion. At this point, the
4866 last character in shell_input_line is the last character of the alias
4867 expansion. We test that last character to determine whether or not to
4868 return the space that will delimit the token and postpone the pop_string.
4869 This set of conditions duplicates what used to be in mk_alexpansion ()
4870 below, with the addition that we don't add a space if we're currently
4871 reading a quoted string or in a shell comment. */
4872 #ifndef OLD_ALIAS_HACK
4873 if (uc == 0 && pushed_string_list && pushed_string_list->flags != PSH_SOURCE &&
4874 pushed_string_list->flags != PSH_DPAREN &&
4875 (parser_state & PST_COMMENT) == 0 &&
4876 (parser_state & PST_ENDALIAS) == 0 && /* only once */
4877 shell_input_line_index > 0 &&
4878 shellblank (shell_input_line[shell_input_line_index-1]) == 0 &&
4879 shell_input_line[shell_input_line_index-1] != '\n' &&
4880 shellmeta (shell_input_line[shell_input_line_index-1]) == 0 &&
4881 (current_delimiter (dstack) != '\'' && current_delimiter (dstack) != '"'))
4882 {
4883 parser_state |= PST_ENDALIAS;
4884 return ' '; /* END_ALIAS */
4885 }
4886 #endif
4887
4888 pop_alias:
4889 /* This case works for PSH_DPAREN as well */
4890 if (uc == 0 && pushed_string_list && pushed_string_list->flags != PSH_SOURCE)
4891 {
4892 parser_state &= ~PST_ENDALIAS;
4893 pop_string ();
4894 uc = shell_input_line[shell_input_line_index];
4895 if (uc)
4896 shell_input_line_index++;
4897 }
4898 #endif /* ALIAS || DPAREN_ARITHMETIC */
4899
4900 if MBTEST(uc == '\\' && remove_quoted_newline && shell_input_line[shell_input_line_index] == '\n')
4901 {
4902 if (SHOULD_PROMPT ())
4903 prompt_again ();
4904 line_number++;
4905 /* What do we do here if we're expanding an alias whose definition
4906 includes an escaped newline? If that's the last character in the
4907 alias expansion, we just pop the pushed string list (recall that
4908 we inhibit the appending of a space if newline is the last
4909 character). If it's not the last character, we need to consume the
4910 quoted newline and move to the next character in the expansion. */
4911 #if defined (ALIAS)
4912 if (expanding_alias () && shell_input_line[shell_input_line_index+1] == '\0')
4913 {
4914 uc = 0;
4915 goto pop_alias;
4916 }
4917 else if (expanding_alias () && shell_input_line[shell_input_line_index+1] != '\0')
4918 {
4919 shell_input_line_index++; /* skip newline */
4920 goto next_alias_char; /* and get next character */
4921 }
4922 else
4923 #endif
4924 goto restart_read;
4925 }
4926
4927 if (uc == 0 && shell_input_line_terminator == EOF)
4928 return ((shell_input_line_index != 0) ? '\n' : EOF);
4929
4930 #if defined (ALIAS) || defined (DPAREN_ARITHMETIC)
4931 /* We already know that we are not parsing an alias expansion because of the
4932 check for expanding_alias() above. This knows how parse_and_execute
4933 handles switching to st_string input while an alias is being expanded,
4934 hence the check for pushed_string_list without pushed_string_list->expander
4935 and the check for PSH_SOURCE as pushed_string_list->flags.
4936 parse_and_execute and parse_string both change the input type to st_string
4937 and place the string to be parsed and executed into location.string, so
4938 we should not stop reading that until the pointer is '\0'.
4939 The check for shell_input_line_terminator may be superfluous.
4940
4941 This solves the problem of `.' inside a multi-line alias with embedded
4942 newlines executing things out of order. */
4943 if (uc == 0 && bash_input.type == st_string && *bash_input.location.string &&
4944 pushed_string_list && pushed_string_list->flags == PSH_SOURCE &&
4945 shell_input_line_terminator == 0)
4946 {
4947 shell_input_line_index = 0;
4948 goto restart_read;
4949 }
4950 #endif
4951
4952 return (uc);
4953 }
4954
4955 /* Put C back into the input for the shell. This might need changes for
4956 HANDLE_MULTIBYTE around EOLs. Since we (currently) never push back a
4957 character different than we read, shell_input_line_property doesn't need
4958 to change when manipulating shell_input_line. The define for
4959 last_shell_getc_is_singlebyte should take care of it, though. */
4960 static void
4961 shell_ungetc (c)
4962 int c;
4963 {
4964 if (shell_input_line && shell_input_line_index)
4965 shell_input_line[--shell_input_line_index] = c;
4966 else
4967 eol_ungetc_lookahead = c;
4968 }
4969
4970 char *
4971 parser_remaining_input ()
4972 {
4973 if (shell_input_line == 0)
4974 return 0;
4975 if ((int)shell_input_line_index < 0 || shell_input_line_index >= shell_input_line_len)
4976 return ""; /* XXX */
4977 return (shell_input_line + shell_input_line_index);
4978 }
4979
4980 #ifdef INCLUDE_UNUSED
4981 /* Back the input pointer up by one, effectively `ungetting' a character. */
4982 static void
4983 shell_ungetchar ()
4984 {
4985 if (shell_input_line && shell_input_line_index)
4986 shell_input_line_index--;
4987 }
4988 #endif
4989
4990 /* Discard input until CHARACTER is seen, then push that character back
4991 onto the input stream. */
4992 static void
4993 discard_until (character)
4994 int character;
4995 {
4996 int c;
4997
4998 while ((c = shell_getc (0)) != EOF && c != character)
4999 ;
5000
5001 if (c != EOF)
5002 shell_ungetc (c);
5003 }
5004
5005 void
5006 execute_variable_command (command, vname)
5007 char *command, *vname;
5008 {
5009 char *last_lastarg;
5010 sh_parser_state_t ps;
5011
5012 save_parser_state (&ps);
5013 last_lastarg = get_string_value ("_");
5014 if (last_lastarg)
5015 last_lastarg = savestring (last_lastarg);
5016
5017 parse_and_execute (savestring (command), vname, SEVAL_NONINT|SEVAL_NOHIST);
5018
5019 restore_parser_state (&ps);
5020 bind_variable ("_", last_lastarg, 0);
5021 FREE (last_lastarg);
5022
5023 if (token_to_read == '\n') /* reset_parser was called */
5024 token_to_read = 0;
5025 }
5026
5027 void
5028 push_token (x)
5029 int x;
5030 {
5031 two_tokens_ago = token_before_that;
5032 token_before_that = last_read_token;
5033 last_read_token = current_token;
5034
5035 current_token = x;
5036 }
5037
5038 /* Place to remember the token. We try to keep the buffer
5039 at a reasonable size, but it can grow. */
5040 static char *token = (char *)NULL;
5041
5042 /* Current size of the token buffer. */
5043 static int token_buffer_size;
5044
5045 /* Command to read_token () explaining what we want it to do. */
5046 #define READ 0
5047 #define RESET 1
5048 #define prompt_is_ps1 \
5049 (!prompt_string_pointer || prompt_string_pointer == &ps1_prompt)
5050
5051 /* Function for yyparse to call. yylex keeps track of
5052 the last two tokens read, and calls read_token. */
5053 static int
5054 yylex ()
5055 {
5056 if (interactive && (current_token == 0 || current_token == '\n'))
5057 {
5058 /* Before we print a prompt, we might have to check mailboxes.
5059 We do this only if it is time to do so. Notice that only here
5060 is the mail alarm reset; nothing takes place in check_mail ()
5061 except the checking of mail. Please don't change this. */
5062 if (prompt_is_ps1 && parse_and_execute_level == 0 && time_to_check_mail ())
5063 {
5064 check_mail ();
5065 reset_mail_timer ();
5066 }
5067
5068 /* Avoid printing a prompt if we're not going to read anything, e.g.
5069 after resetting the parser with read_token (RESET). */
5070 if (token_to_read == 0 && SHOULD_PROMPT ())
5071 prompt_again ();
5072 }
5073
5074 two_tokens_ago = token_before_that;
5075 token_before_that = last_read_token;
5076 last_read_token = current_token;
5077 current_token = read_token (READ);
5078
5079 if ((parser_state & PST_EOFTOKEN) && current_token == shell_eof_token)
5080 {
5081 current_token = yacc_EOF;
5082 if (bash_input.type == st_string)
5083 rewind_input_string ();
5084 }
5085 parser_state &= ~PST_EOFTOKEN; /* ??? */
5086
5087 return (current_token);
5088 }
5089
5090 /* When non-zero, we have read the required tokens
5091 which allow ESAC to be the next one read. */
5092 static int esacs_needed_count;
5093
5094 /* When non-zero, we can read IN as an acceptable token, regardless of how
5095 many newlines we read. */
5096 static int expecting_in_token;
5097
5098 static void
5099 push_heredoc (r)
5100 REDIRECT *r;
5101 {
5102 if (need_here_doc >= HEREDOC_MAX)
5103 {
5104 last_command_exit_value = EX_BADUSAGE;
5105 need_here_doc = 0;
5106 report_syntax_error (_("maximum here-document count exceeded"));
5107 reset_parser ();
5108 exit_shell (last_command_exit_value);
5109 }
5110 redir_stack[need_here_doc++] = r;
5111 }
5112
5113 void
5114 gather_here_documents ()
5115 {
5116 int r;
5117
5118 r = 0;
5119 here_doc_first_line = 1;
5120 while (need_here_doc > 0)
5121 {
5122 parser_state |= PST_HEREDOC;
5123 make_here_document (redir_stack[r++], line_number);
5124 parser_state &= ~PST_HEREDOC;
5125 need_here_doc--;
5126 redir_stack[r - 1] = 0; /* XXX */
5127 }
5128 here_doc_first_line = 0; /* just in case */
5129 }
5130
5131 /* When non-zero, an open-brace used to create a group is awaiting a close
5132 brace partner. */
5133 static int open_brace_count;
5134
5135 /* In the following three macros, `token' is always last_read_token */
5136
5137 /* Are we in the middle of parsing a redirection where we are about to read
5138 a word? This is used to make sure alias expansion doesn't happen in the
5139 middle of a redirection, even though we're parsing a simple command. */
5140 #define parsing_redirection(token) \
5141 (token == '<' || token == '>' || \
5142 token == GREATER_GREATER || token == GREATER_BAR || \
5143 token == LESS_GREATER || token == LESS_LESS_MINUS || \
5144 token == LESS_LESS || token == LESS_LESS_LESS || \
5145 token == LESS_AND || token == GREATER_AND || token == AND_GREATER)
5146
5147 /* Is `token' one that will allow a WORD to be read in a command position?
5148 We can read a simple command name on which we should attempt alias expansion
5149 or we can read an assignment statement. */
5150 #define command_token_position(token) \
5151 (((token) == ASSIGNMENT_WORD) || \
5152 ((parser_state&PST_REDIRLIST) && parsing_redirection(token) == 0) || \
5153 ((token) != SEMI_SEMI && (token) != SEMI_AND && (token) != SEMI_SEMI_AND && reserved_word_acceptable(token)))
5154
5155 /* Are we in a position where we can read an assignment statement? */
5156 #define assignment_acceptable(token) \
5157 (command_token_position(token) && ((parser_state & PST_CASEPAT) == 0))
5158
5159 /* Check to see if TOKEN is a reserved word and return the token
5160 value if it is. */
5161 #define CHECK_FOR_RESERVED_WORD(tok) \
5162 do { \
5163 if (!dollar_present && !quoted && \
5164 reserved_word_acceptable (last_read_token)) \
5165 { \
5166 int i; \
5167 for (i = 0; word_token_alist[i].word != (char *)NULL; i++) \
5168 if (STREQ (tok, word_token_alist[i].word)) \
5169 { \
5170 if ((parser_state & PST_CASEPAT) && (word_token_alist[i].token != ESAC)) \
5171 break; \
5172 if (word_token_alist[i].token == TIME && time_command_acceptable () == 0) \
5173 break; \
5174 if ((parser_state & PST_CASEPAT) && last_read_token == '|' && word_token_alist[i].token == ESAC) \
5175 break; /* Posix grammar rule 4 */ \
5176 if (word_token_alist[i].token == ESAC) \
5177 parser_state &= ~(PST_CASEPAT|PST_CASESTMT); \
5178 else if (word_token_alist[i].token == CASE) \
5179 parser_state |= PST_CASESTMT; \
5180 else if (word_token_alist[i].token == COND_END) \
5181 parser_state &= ~(PST_CONDCMD|PST_CONDEXPR); \
5182 else if (word_token_alist[i].token == COND_START) \
5183 parser_state |= PST_CONDCMD; \
5184 else if (word_token_alist[i].token == '{') \
5185 open_brace_count++; \
5186 else if (word_token_alist[i].token == '}' && open_brace_count) \
5187 open_brace_count--; \
5188 return (word_token_alist[i].token); \
5189 } \
5190 } \
5191 } while (0)
5192
5193 #if defined (ALIAS)
5194
5195 /* OK, we have a token. Let's try to alias expand it, if (and only if)
5196 it's eligible.
5197
5198 It is eligible for expansion if EXPAND_ALIASES is set, and
5199 the token is unquoted and the last token read was a command
5200 separator (or expand_next_token is set), and we are currently
5201 processing an alias (pushed_string_list is non-empty) and this
5202 token is not the same as the current or any previously
5203 processed alias.
5204
5205 Special cases that disqualify:
5206 In a pattern list in a case statement (parser_state & PST_CASEPAT). */
5207
5208 static char *
5209 mk_alexpansion (s)
5210 char *s;
5211 {
5212 int l;
5213 char *r;
5214
5215 l = strlen (s);
5216 r = xmalloc (l + 2);
5217 strcpy (r, s);
5218 #ifdef OLD_ALIAS_HACK
5219 /* If the last character in the alias is a newline, don't add a trailing
5220 space to the expansion. Works with shell_getc above. */
5221 /* Need to do something about the case where the alias expansion contains
5222 an unmatched quoted string, since appending this space affects the
5223 subsequent output. */
5224 if (l > 0 && r[l - 1] != ' ' && r[l - 1] != '\n' && shellmeta(r[l - 1]) == 0)
5225 r[l++] = ' ';
5226 #endif
5227 r[l] = '\0';
5228 return r;
5229 }
5230
5231 static int
5232 alias_expand_token (tokstr)
5233 char *tokstr;
5234 {
5235 char *expanded;
5236 alias_t *ap;
5237
5238 if (((parser_state & PST_ALEXPNEXT) || command_token_position (last_read_token)) &&
5239 (parser_state & PST_CASEPAT) == 0)
5240 {
5241 ap = find_alias (tokstr);
5242
5243 /* Currently expanding this token. */
5244 if (ap && (ap->flags & AL_BEINGEXPANDED))
5245 return (NO_EXPANSION);
5246
5247 #ifdef OLD_ALIAS_HACK
5248 /* mk_alexpansion puts an extra space on the end of the alias expansion,
5249 so the lookahead by the parser works right (the alias needs to remain
5250 `in use' while parsing its last word to avoid alias recursion for
5251 something like "alias echo=echo"). If this gets changed, make sure
5252 the code in shell_getc that deals with reaching the end of an
5253 expanded alias is changed with it. */
5254 #endif
5255 expanded = ap ? mk_alexpansion (ap->value) : (char *)NULL;
5256
5257 if (expanded)
5258 {
5259 push_string (expanded, ap->flags & AL_EXPANDNEXT, ap);
5260 return (RE_READ_TOKEN);
5261 }
5262 else
5263 /* This is an eligible token that does not have an expansion. */
5264 return (NO_EXPANSION);
5265 }
5266 return (NO_EXPANSION);
5267 }
5268 #endif /* ALIAS */
5269
5270 static int
5271 time_command_acceptable ()
5272 {
5273 #if defined (COMMAND_TIMING)
5274 int i;
5275
5276 if (posixly_correct && shell_compatibility_level > 41)
5277 {
5278 /* Quick check of the rest of the line to find the next token. If it
5279 begins with a `-', Posix says to not return `time' as the token.
5280 This was interp 267. */
5281 i = shell_input_line_index;
5282 while (i < shell_input_line_len && (shell_input_line[i] == ' ' || shell_input_line[i] == '\t'))
5283 i++;
5284 if (shell_input_line[i] == '-')
5285 return 0;
5286 }
5287
5288 switch (last_read_token)
5289 {
5290 case 0:
5291 case ';':
5292 case '\n':
5293 if (token_before_that == '|')
5294 return (0);
5295 /* FALLTHROUGH */
5296 case AND_AND:
5297 case OR_OR:
5298 case '&':
5299 case WHILE:
5300 case DO:
5301 case UNTIL:
5302 case IF:
5303 case THEN:
5304 case ELIF:
5305 case ELSE:
5306 case '{': /* } */
5307 case '(': /* )( */
5308 case ')': /* only valid in case statement */
5309 case BANG: /* ! time pipeline */
5310 case TIME: /* time time pipeline */
5311 case TIMEOPT: /* time -p time pipeline */
5312 case TIMEIGN: /* time -p -- ... */
5313 return 1;
5314 default:
5315 return 0;
5316 }
5317 #else
5318 return 0;
5319 #endif /* COMMAND_TIMING */
5320 }
5321
5322 /* Handle special cases of token recognition:
5323 IN is recognized if the last token was WORD and the token
5324 before that was FOR or CASE or SELECT.
5325
5326 DO is recognized if the last token was WORD and the token
5327 before that was FOR or SELECT.
5328
5329 ESAC is recognized if the last token caused `esacs_needed_count'
5330 to be set
5331
5332 `{' is recognized if the last token as WORD and the token
5333 before that was FUNCTION, or if we just parsed an arithmetic
5334 `for' command.
5335
5336 `}' is recognized if there is an unclosed `{' present.
5337
5338 `-p' is returned as TIMEOPT if the last read token was TIME.
5339 `--' is returned as TIMEIGN if the last read token was TIMEOPT.
5340
5341 ']]' is returned as COND_END if the parser is currently parsing
5342 a conditional expression ((parser_state & PST_CONDEXPR) != 0)
5343
5344 `time' is returned as TIME if and only if it is immediately
5345 preceded by one of `;', `\n', `||', `&&', or `&'.
5346 */
5347
5348 static int
5349 special_case_tokens (tokstr)
5350 char *tokstr;
5351 {
5352 /* Posix grammar rule 6 */
5353 if ((last_read_token == WORD) &&
5354 #if defined (SELECT_COMMAND)
5355 ((token_before_that == FOR) || (token_before_that == CASE) || (token_before_that == SELECT)) &&
5356 #else
5357 ((token_before_that == FOR) || (token_before_that == CASE)) &&
5358 #endif
5359 (tokstr[0] == 'i' && tokstr[1] == 'n' && tokstr[2] == 0))
5360 {
5361 if (token_before_that == CASE)
5362 {
5363 parser_state |= PST_CASEPAT;
5364 esacs_needed_count++;
5365 }
5366 if (expecting_in_token)
5367 expecting_in_token--;
5368 return (IN);
5369 }
5370
5371 /* XXX - leaving above code intact for now, but it should eventually be
5372 removed in favor of this clause. */
5373 /* Posix grammar rule 6 */
5374 if (expecting_in_token && (last_read_token == WORD || last_read_token == '\n') &&
5375 (tokstr[0] == 'i' && tokstr[1] == 'n' && tokstr[2] == 0))
5376 {
5377 if (parser_state & PST_CASESTMT)
5378 {
5379 parser_state |= PST_CASEPAT;
5380 esacs_needed_count++;
5381 }
5382 expecting_in_token--;
5383 return (IN);
5384 }
5385 /* Posix grammar rule 6, third word in FOR: for i; do command-list; done */
5386 else if (expecting_in_token && (last_read_token == '\n' || last_read_token == ';') &&
5387 (tokstr[0] == 'd' && tokstr[1] == 'o' && tokstr[2] == '\0'))
5388 {
5389 expecting_in_token--;
5390 return (DO);
5391 }
5392
5393 /* for i do; command-list; done */
5394 if (last_read_token == WORD &&
5395 #if defined (SELECT_COMMAND)
5396 (token_before_that == FOR || token_before_that == SELECT) &&
5397 #else
5398 (token_before_that == FOR) &&
5399 #endif
5400 (tokstr[0] == 'd' && tokstr[1] == 'o' && tokstr[2] == '\0'))
5401 {
5402 if (expecting_in_token)
5403 expecting_in_token--;
5404 return (DO);
5405 }
5406
5407 /* Ditto for ESAC in the CASE case.
5408 Specifically, this handles "case word in esac", which is a legal
5409 construct, certainly because someone will pass an empty arg to the
5410 case construct, and we don't want it to barf. Of course, we should
5411 insist that the case construct has at least one pattern in it, but
5412 the designers disagree. */
5413 if (esacs_needed_count)
5414 {
5415 if (last_read_token == IN && STREQ (tokstr, "esac"))
5416 {
5417 esacs_needed_count--;
5418 parser_state &= ~PST_CASEPAT;
5419 return (ESAC);
5420 }
5421 }
5422
5423 /* The start of a shell function definition. */
5424 if (parser_state & PST_ALLOWOPNBRC)
5425 {
5426 parser_state &= ~PST_ALLOWOPNBRC;
5427 if (tokstr[0] == '{' && tokstr[1] == '\0') /* } */
5428 {
5429 open_brace_count++;
5430 function_bstart = line_number;
5431 return ('{'); /* } */
5432 }
5433 }
5434
5435 /* We allow a `do' after a for ((...)) without an intervening
5436 list_terminator */
5437 if (last_read_token == ARITH_FOR_EXPRS && tokstr[0] == 'd' && tokstr[1] == 'o' && !tokstr[2])
5438 return (DO);
5439 if (last_read_token == ARITH_FOR_EXPRS && tokstr[0] == '{' && tokstr[1] == '\0') /* } */
5440 {
5441 open_brace_count++;
5442 return ('{'); /* } */
5443 }
5444
5445 if (open_brace_count && reserved_word_acceptable (last_read_token) && tokstr[0] == '}' && !tokstr[1])
5446 {
5447 open_brace_count--; /* { */
5448 return ('}');
5449 }
5450
5451 #if defined (COMMAND_TIMING)
5452 /* Handle -p after `time'. */
5453 if (last_read_token == TIME && tokstr[0] == '-' && tokstr[1] == 'p' && !tokstr[2])
5454 return (TIMEOPT);
5455 /* Handle -- after `time -p'. */
5456 if (last_read_token == TIMEOPT && tokstr[0] == '-' && tokstr[1] == '-' && !tokstr[2])
5457 return (TIMEIGN);
5458 #endif
5459
5460 #if defined (COND_COMMAND) /* [[ */
5461 if ((parser_state & PST_CONDEXPR) && tokstr[0] == ']' && tokstr[1] == ']' && tokstr[2] == '\0')
5462 return (COND_END);
5463 #endif
5464
5465 return (-1);
5466 }
5467
5468 /* Called from shell.c when Control-C is typed at top level. Or
5469 by the error rule at top level. */
5470 void
5471 reset_parser ()
5472 {
5473 dstack.delimiter_depth = 0; /* No delimiters found so far. */
5474 open_brace_count = 0;
5475
5476 #if defined (EXTENDED_GLOB)
5477 /* Reset to global value of extended glob */
5478 if (parser_state & PST_EXTPAT)
5479 extended_glob = global_extglob;
5480 #endif
5481
5482 parser_state = 0;
5483 here_doc_first_line = 0;
5484
5485 #if defined (ALIAS) || defined (DPAREN_ARITHMETIC)
5486 if (pushed_string_list)
5487 free_string_list ();
5488 #endif /* ALIAS || DPAREN_ARITHMETIC */
5489
5490 /* This is where we resynchronize to the next newline on error/reset */
5491 if (shell_input_line)
5492 {
5493 free (shell_input_line);
5494 shell_input_line = (char *)NULL;
5495 shell_input_line_size = shell_input_line_index = 0;
5496 }
5497
5498 FREE (word_desc_to_read);
5499 word_desc_to_read = (WORD_DESC *)NULL;
5500
5501 eol_ungetc_lookahead = 0;
5502
5503 current_token = '\n'; /* XXX */
5504 last_read_token = '\n';
5505 token_to_read = '\n';
5506 }
5507
5508 void
5509 reset_readahead_token ()
5510 {
5511 if (token_to_read == '\n')
5512 token_to_read = 0;
5513 }
5514
5515 /* Read the next token. Command can be READ (normal operation) or
5516 RESET (to normalize state). */
5517 static int
5518 read_token (command)
5519 int command;
5520 {
5521 int character; /* Current character. */
5522 int peek_char; /* Temporary look-ahead character. */
5523 int result; /* The thing to return. */
5524
5525 if (command == RESET)
5526 {
5527 reset_parser ();
5528 return ('\n');
5529 }
5530
5531 if (token_to_read)
5532 {
5533 result = token_to_read;
5534 if (token_to_read == WORD || token_to_read == ASSIGNMENT_WORD)
5535 {
5536 yylval.word = word_desc_to_read;
5537 word_desc_to_read = (WORD_DESC *)NULL;
5538 }
5539 token_to_read = 0;
5540 return (result);
5541 }
5542
5543 #if defined (COND_COMMAND)
5544 if ((parser_state & (PST_CONDCMD|PST_CONDEXPR)) == PST_CONDCMD)
5545 {
5546 cond_lineno = line_number;
5547 parser_state |= PST_CONDEXPR;
5548 yylval.command = parse_cond_command ();
5549 if (cond_token != COND_END)
5550 {
5551 cond_error ();
5552 return (-1);
5553 }
5554 token_to_read = COND_END;
5555 parser_state &= ~(PST_CONDEXPR|PST_CONDCMD);
5556 return (COND_CMD);
5557 }
5558 #endif
5559
5560 #if defined (ALIAS)
5561 /* This is a place to jump back to once we have successfully expanded a
5562 token with an alias and pushed the string with push_string () */
5563 re_read_token:
5564 #endif /* ALIAS */
5565
5566 /* Read a single word from input. Start by skipping blanks. */
5567 while ((character = shell_getc (1)) != EOF && shellblank (character))
5568 ;
5569
5570 if (character == EOF)
5571 {
5572 EOF_Reached = 1;
5573 return (yacc_EOF);
5574 }
5575
5576 /* If we hit the end of the string and we're not expanding an alias (e.g.,
5577 we are eval'ing a string that is an incomplete command), return EOF */
5578 if (character == '\0' && bash_input.type == st_string && expanding_alias() == 0)
5579 {
5580 #if defined (DEBUG)
5581 itrace("shell_getc: bash_input.location.string = `%s'", bash_input.location.string);
5582 #endif
5583 EOF_Reached = 1;
5584 return (yacc_EOF);
5585 }
5586
5587 if MBTEST(character == '#' && (!interactive || interactive_comments))
5588 {
5589 /* A comment. Discard until EOL or EOF, and then return a newline. */
5590 parser_state |= PST_COMMENT;
5591 discard_until ('\n');
5592 shell_getc (0);
5593 parser_state &= ~PST_COMMENT;
5594 character = '\n'; /* this will take the next if statement and return. */
5595 }
5596
5597 if (character == '\n')
5598 {
5599 /* If we're about to return an unquoted newline, we can go and collect
5600 the text of any pending here document. */
5601 if (need_here_doc)
5602 gather_here_documents ();
5603
5604 #if defined (ALIAS)
5605 parser_state &= ~PST_ALEXPNEXT;
5606 #endif /* ALIAS */
5607
5608 parser_state &= ~PST_ASSIGNOK;
5609
5610 return (character);
5611 }
5612
5613 if (parser_state & PST_REGEXP)
5614 goto tokword;
5615
5616 /* Shell meta-characters. */
5617 if MBTEST(shellmeta (character) && ((parser_state & PST_DBLPAREN) == 0))
5618 {
5619 #if defined (ALIAS)
5620 /* Turn off alias tokenization iff this character sequence would
5621 not leave us ready to read a command. */
5622 if (character == '<' || character == '>')
5623 parser_state &= ~PST_ALEXPNEXT;
5624 #endif /* ALIAS */
5625
5626 parser_state &= ~PST_ASSIGNOK;
5627
5628 /* If we are parsing a command substitution and we have read a character
5629 that marks the end of it, don't bother to skip over quoted newlines
5630 when we read the next token. We're just interested in a character
5631 that will turn this into a two-character token, so we let the higher
5632 layers deal with quoted newlines following the command substitution. */
5633 if ((parser_state & PST_CMDSUBST) && character == shell_eof_token)
5634 peek_char = shell_getc (0);
5635 else
5636 peek_char = shell_getc (1);
5637
5638 if (character == peek_char)
5639 {
5640 switch (character)
5641 {
5642 case '<':
5643 /* If '<' then we could be at "<<" or at "<<-". We have to
5644 look ahead one more character. */
5645 peek_char = shell_getc (1);
5646 if MBTEST(peek_char == '-')
5647 return (LESS_LESS_MINUS);
5648 else if MBTEST(peek_char == '<')
5649 return (LESS_LESS_LESS);
5650 else
5651 {
5652 shell_ungetc (peek_char);
5653 return (LESS_LESS);
5654 }
5655
5656 case '>':
5657 return (GREATER_GREATER);
5658
5659 case ';':
5660 parser_state |= PST_CASEPAT;
5661 #if defined (ALIAS)
5662 parser_state &= ~PST_ALEXPNEXT;
5663 #endif /* ALIAS */
5664
5665 peek_char = shell_getc (1);
5666 if MBTEST(peek_char == '&')
5667 return (SEMI_SEMI_AND);
5668 else
5669 {
5670 shell_ungetc (peek_char);
5671 return (SEMI_SEMI);
5672 }
5673
5674 case '&':
5675 return (AND_AND);
5676
5677 case '|':
5678 return (OR_OR);
5679
5680 #if defined (DPAREN_ARITHMETIC) || defined (ARITH_FOR_COMMAND)
5681 case '(': /* ) */
5682 result = parse_dparen (character);
5683 if (result == -2)
5684 break;
5685 else
5686 return result;
5687 #endif
5688 }
5689 }
5690 else if MBTEST(character == '<' && peek_char == '&')
5691 return (LESS_AND);
5692 else if MBTEST(character == '>' && peek_char == '&')
5693 return (GREATER_AND);
5694 else if MBTEST(character == '<' && peek_char == '>')
5695 return (LESS_GREATER);
5696 else if MBTEST(character == '>' && peek_char == '|')
5697 return (GREATER_BAR);
5698 else if MBTEST(character == '&' && peek_char == '>')
5699 {
5700 peek_char = shell_getc (1);
5701 if MBTEST(peek_char == '>')
5702 return (AND_GREATER_GREATER);
5703 else
5704 {
5705 shell_ungetc (peek_char);
5706 return (AND_GREATER);
5707 }
5708 }
5709 else if MBTEST(character == '|' && peek_char == '&')
5710 return (BAR_AND);
5711 else if MBTEST(character == ';' && peek_char == '&')
5712 {
5713 parser_state |= PST_CASEPAT;
5714 #if defined (ALIAS)
5715 parser_state &= ~PST_ALEXPNEXT;
5716 #endif /* ALIAS */
5717 return (SEMI_AND);
5718 }
5719
5720 shell_ungetc (peek_char);
5721
5722 /* If we look like we are reading the start of a function
5723 definition, then let the reader know about it so that
5724 we will do the right thing with `{'. */
5725 if MBTEST(character == ')' && last_read_token == '(' && token_before_that == WORD)
5726 {
5727 parser_state |= PST_ALLOWOPNBRC;
5728 #if defined (ALIAS)
5729 parser_state &= ~PST_ALEXPNEXT;
5730 #endif /* ALIAS */
5731 function_dstart = line_number;
5732 }
5733
5734 /* case pattern lists may be preceded by an optional left paren. If
5735 we're not trying to parse a case pattern list, the left paren
5736 indicates a subshell. */
5737 if MBTEST(character == '(' && (parser_state & PST_CASEPAT) == 0) /* ) */
5738 parser_state |= PST_SUBSHELL;
5739 /*(*/
5740 else if MBTEST((parser_state & PST_CASEPAT) && character == ')')
5741 parser_state &= ~PST_CASEPAT;
5742 /*(*/
5743 else if MBTEST((parser_state & PST_SUBSHELL) && character == ')')
5744 parser_state &= ~PST_SUBSHELL;
5745
5746 #if defined (PROCESS_SUBSTITUTION)
5747 /* Check for the constructs which introduce process substitution.
5748 Shells running in `posix mode' don't do process substitution. */
5749 if MBTEST(posixly_correct || ((character != '>' && character != '<') || peek_char != '(')) /*)*/
5750 #endif /* PROCESS_SUBSTITUTION */
5751 return (character);
5752 }
5753
5754 /* Hack <&- (close stdin) case. Also <&N- (dup and close). */
5755 if MBTEST(character == '-' && (last_read_token == LESS_AND || last_read_token == GREATER_AND))
5756 return (character);
5757
5758 tokword:
5759 /* Okay, if we got this far, we have to read a word. Read one,
5760 and then check it against the known ones. */
5761 result = read_token_word (character);
5762 #if defined (ALIAS)
5763 if (result == RE_READ_TOKEN)
5764 goto re_read_token;
5765 #endif
5766 return result;
5767 }
5768
5769 /*
5770 * Match a $(...) or other grouping construct. This has to handle embedded
5771 * quoted strings ('', ``, "") and nested constructs. It also must handle
5772 * reprompting the user, if necessary, after reading a newline, and returning
5773 * correct error values if it reads EOF.
5774 */
5775 #define P_FIRSTCLOSE 0x0001
5776 #define P_ALLOWESC 0x0002
5777 #define P_DQUOTE 0x0004
5778 #define P_COMMAND 0x0008 /* parsing a command, so look for comments */
5779 #define P_BACKQUOTE 0x0010 /* parsing a backquoted command substitution */
5780 #define P_ARRAYSUB 0x0020 /* parsing a [...] array subscript for assignment */
5781 #define P_DOLBRACE 0x0040 /* parsing a ${...} construct */
5782
5783 /* Lexical state while parsing a grouping construct or $(...). */
5784 #define LEX_WASDOL 0x0001
5785 #define LEX_CKCOMMENT 0x0002
5786 #define LEX_INCOMMENT 0x0004
5787 #define LEX_PASSNEXT 0x0008
5788 #define LEX_RESWDOK 0x0010
5789 #define LEX_CKCASE 0x0020
5790 #define LEX_INCASE 0x0040
5791 #define LEX_INHEREDOC 0x0080
5792 #define LEX_HEREDELIM 0x0100 /* reading here-doc delimiter */
5793 #define LEX_STRIPDOC 0x0200 /* <<- strip tabs from here doc delim */
5794 #define LEX_QUOTEDDOC 0x0400 /* here doc with quoted delim */
5795 #define LEX_INWORD 0x0800
5796 #define LEX_GTLT 0x1000
5797
5798 #define COMSUB_META(ch) ((ch) == ';' || (ch) == '&' || (ch) == '|')
5799
5800 #define CHECK_NESTRET_ERROR() \
5801 do { \
5802 if (nestret == &matched_pair_error) \
5803 { \
5804 free (ret); \
5805 return &matched_pair_error; \
5806 } \
5807 } while (0)
5808
5809 #define APPEND_NESTRET() \
5810 do { \
5811 if (nestlen) \
5812 { \
5813 RESIZE_MALLOCED_BUFFER (ret, retind, nestlen, retsize, 64); \
5814 strcpy (ret + retind, nestret); \
5815 retind += nestlen; \
5816 } \
5817 } while (0)
5818
5819 static char matched_pair_error;
5820
5821 static char *
5822 parse_matched_pair (qc, open, close, lenp, flags)
5823 int qc; /* `"' if this construct is within double quotes */
5824 int open, close;
5825 int *lenp, flags;
5826 {
5827 int count, ch, prevch, tflags;
5828 int nestlen, ttranslen, start_lineno;
5829 char *ret, *nestret, *ttrans;
5830 int retind, retsize, rflags;
5831 int dolbrace_state;
5832
5833 dolbrace_state = (flags & P_DOLBRACE) ? DOLBRACE_PARAM : 0;
5834
5835 /*itrace("parse_matched_pair[%d]: open = %c close = %c flags = %d", line_number, open, close, flags);*/
5836 count = 1;
5837 tflags = 0;
5838
5839 if ((flags & P_COMMAND) && qc != '`' && qc != '\'' && qc != '"' && (flags & P_DQUOTE) == 0)
5840 tflags |= LEX_CKCOMMENT;
5841
5842 /* RFLAGS is the set of flags we want to pass to recursive calls. */
5843 rflags = (qc == '"') ? P_DQUOTE : (flags & P_DQUOTE);
5844
5845 ret = (char *)xmalloc (retsize = 64);
5846 retind = 0;
5847
5848 start_lineno = line_number;
5849 ch = EOF; /* just in case */
5850 while (count)
5851 {
5852 prevch = ch;
5853 ch = shell_getc (qc != '\'' && (tflags & (LEX_PASSNEXT)) == 0);
5854
5855 if (ch == EOF)
5856 {
5857 free (ret);
5858 parser_error (start_lineno, _("unexpected EOF while looking for matching `%c'"), close);
5859 EOF_Reached = 1; /* XXX */
5860 return (&matched_pair_error);
5861 }
5862
5863 /* Possible reprompting. */
5864 if (ch == '\n' && SHOULD_PROMPT ())
5865 prompt_again ();
5866
5867 /* Don't bother counting parens or doing anything else if in a comment
5868 or part of a case statement */
5869 if (tflags & LEX_INCOMMENT)
5870 {
5871 /* Add this character. */
5872 RESIZE_MALLOCED_BUFFER (ret, retind, 1, retsize, 64);
5873 ret[retind++] = ch;
5874
5875 if (ch == '\n')
5876 tflags &= ~LEX_INCOMMENT;
5877
5878 continue;
5879 }
5880
5881 /* Not exactly right yet, should handle shell metacharacters, too. If
5882 any changes are made to this test, make analogous changes to subst.c:
5883 extract_delimited_string(). */
5884 else if MBTEST((tflags & LEX_CKCOMMENT) && (tflags & LEX_INCOMMENT) == 0 && ch == '#' && (retind == 0 || ret[retind-1] == '\n' || shellblank (ret[retind - 1])))
5885 tflags |= LEX_INCOMMENT;
5886
5887 if (tflags & LEX_PASSNEXT) /* last char was backslash */
5888 {
5889 tflags &= ~LEX_PASSNEXT;
5890 if (qc != '\'' && ch == '\n') /* double-quoted \<newline> disappears. */
5891 {
5892 if (retind > 0)
5893 retind--; /* swallow previously-added backslash */
5894 continue;
5895 }
5896
5897 RESIZE_MALLOCED_BUFFER (ret, retind, 2, retsize, 64);
5898 if MBTEST(ch == CTLESC)
5899 ret[retind++] = CTLESC;
5900 ret[retind++] = ch;
5901 continue;
5902 }
5903 /* If we're reparsing the input (e.g., from parse_string_to_word_list),
5904 we've already prepended CTLESC to single-quoted results of $'...'.
5905 We may want to do this for other CTLESC-quoted characters in
5906 reparse, too. */
5907 else if MBTEST((parser_state & PST_REPARSE) && open == '\'' && (ch == CTLESC || ch == CTLNUL))
5908 {
5909 RESIZE_MALLOCED_BUFFER (ret, retind, 1, retsize, 64);
5910 ret[retind++] = ch;
5911 continue;
5912 }
5913 else if MBTEST(ch == CTLESC || ch == CTLNUL) /* special shell escapes */
5914 {
5915 RESIZE_MALLOCED_BUFFER (ret, retind, 2, retsize, 64);
5916 ret[retind++] = CTLESC;
5917 ret[retind++] = ch;
5918 continue;
5919 }
5920 else if MBTEST(ch == close) /* ending delimiter */
5921 count--;
5922 /* handle nested ${...} specially. */
5923 else if MBTEST(open != close && (tflags & LEX_WASDOL) && open == '{' && ch == open) /* } */
5924 count++;
5925 else if MBTEST(((flags & P_FIRSTCLOSE) == 0) && ch == open) /* nested begin */
5926 count++;
5927
5928 /* Add this character. */
5929 RESIZE_MALLOCED_BUFFER (ret, retind, 1, retsize, 64);
5930 ret[retind++] = ch;
5931
5932 /* If we just read the ending character, don't bother continuing. */
5933 if (count == 0)
5934 break;
5935
5936 if (open == '\'') /* '' inside grouping construct */
5937 {
5938 if MBTEST((flags & P_ALLOWESC) && ch == '\\')
5939 tflags |= LEX_PASSNEXT;
5940 continue;
5941 }
5942
5943 if MBTEST(ch == '\\') /* backslashes */
5944 tflags |= LEX_PASSNEXT;
5945
5946 /* Based on which dolstate is currently in (param, op, or word),
5947 decide what the op is. We're really only concerned if it's % or
5948 #, so we can turn on a flag that says whether or not we should
5949 treat single quotes as special when inside a double-quoted
5950 ${...}. This logic must agree with subst.c:extract_dollar_brace_string
5951 since they share the same defines. */
5952 /* FLAG POSIX INTERP 221 */
5953 if (flags & P_DOLBRACE)
5954 {
5955 /* ${param%[%]word} */
5956 if MBTEST(dolbrace_state == DOLBRACE_PARAM && ch == '%' && retind > 1)
5957 dolbrace_state = DOLBRACE_QUOTE;
5958 /* ${param#[#]word} */
5959 else if MBTEST(dolbrace_state == DOLBRACE_PARAM && ch == '#' && retind > 1)
5960 dolbrace_state = DOLBRACE_QUOTE;
5961 /* ${param/[/]pat/rep} */
5962 else if MBTEST(dolbrace_state == DOLBRACE_PARAM && ch == '/' && retind > 1)
5963 dolbrace_state = DOLBRACE_QUOTE2; /* XXX */
5964 /* ${param^[^]pat} */
5965 else if MBTEST(dolbrace_state == DOLBRACE_PARAM && ch == '^' && retind > 1)
5966 dolbrace_state = DOLBRACE_QUOTE;
5967 /* ${param,[,]pat} */
5968 else if MBTEST(dolbrace_state == DOLBRACE_PARAM && ch == ',' && retind > 1)
5969 dolbrace_state = DOLBRACE_QUOTE;
5970 else if MBTEST(dolbrace_state == DOLBRACE_PARAM && strchr ("#%^,~:-=?+/", ch) != 0)
5971 dolbrace_state = DOLBRACE_OP;
5972 else if MBTEST(dolbrace_state == DOLBRACE_OP && strchr ("#%^,~:-=?+/", ch) == 0)
5973 dolbrace_state = DOLBRACE_WORD;
5974 }
5975
5976 /* The big hammer. Single quotes aren't special in double quotes. The
5977 problem is that Posix used to say the single quotes are semi-special:
5978 within a double-quoted ${...} construct "an even number of
5979 unescaped double-quotes or single-quotes, if any, shall occur." */
5980 /* This was changed in Austin Group Interp 221 */
5981 if MBTEST(posixly_correct && shell_compatibility_level > 41 && dolbrace_state != DOLBRACE_QUOTE && dolbrace_state != DOLBRACE_QUOTE2 && (flags & P_DQUOTE) && (flags & P_DOLBRACE) && ch == '\'')
5982 continue;
5983
5984 /* Could also check open == '`' if we want to parse grouping constructs
5985 inside old-style command substitution. */
5986 if (open != close) /* a grouping construct */
5987 {
5988 if MBTEST(shellquote (ch))
5989 {
5990 /* '', ``, or "" inside $(...) or other grouping construct. */
5991 push_delimiter (dstack, ch);
5992 if MBTEST((tflags & LEX_WASDOL) && ch == '\'') /* $'...' inside group */
5993 nestret = parse_matched_pair (ch, ch, ch, &nestlen, P_ALLOWESC|rflags);
5994 else
5995 nestret = parse_matched_pair (ch, ch, ch, &nestlen, rflags);
5996 pop_delimiter (dstack);
5997 CHECK_NESTRET_ERROR ();
5998
5999 if MBTEST((tflags & LEX_WASDOL) && ch == '\'' && (extended_quote || (rflags & P_DQUOTE) == 0))
6000 {
6001 /* Translate $'...' here. */
6002 ttrans = ansiexpand (nestret, 0, nestlen - 1, &ttranslen);
6003 free (nestret);
6004
6005 /* If we're parsing a double-quoted brace expansion and we are
6006 not in a place where single quotes are treated specially,
6007 make sure we single-quote the results of the ansi
6008 expansion because quote removal should remove them later */
6009 /* FLAG POSIX INTERP 221 */
6010 if ((shell_compatibility_level > 42) && (rflags & P_DQUOTE) && (dolbrace_state == DOLBRACE_QUOTE2) && (flags & P_DOLBRACE))
6011 {
6012 nestret = sh_single_quote (ttrans);
6013 free (ttrans);
6014 nestlen = strlen (nestret);
6015 }
6016 else if ((rflags & P_DQUOTE) == 0)
6017 {
6018 nestret = sh_single_quote (ttrans);
6019 free (ttrans);
6020 nestlen = strlen (nestret);
6021 }
6022 else
6023 {
6024 nestret = ttrans;
6025 nestlen = ttranslen;
6026 }
6027 retind -= 2; /* back up before the $' */
6028 }
6029 else if MBTEST((tflags & LEX_WASDOL) && ch == '"' && (extended_quote || (rflags & P_DQUOTE) == 0))
6030 {
6031 /* Locale expand $"..." here. */
6032 ttrans = localeexpand (nestret, 0, nestlen - 1, start_lineno, &ttranslen);
6033 free (nestret);
6034
6035 nestret = sh_mkdoublequoted (ttrans, ttranslen, 0);
6036 free (ttrans);
6037 nestlen = ttranslen + 2;
6038 retind -= 2; /* back up before the $" */
6039 }
6040
6041 APPEND_NESTRET ();
6042 FREE (nestret);
6043 }
6044 else if ((flags & (P_ARRAYSUB|P_DOLBRACE)) && (tflags & LEX_WASDOL) && (ch == '(' || ch == '{' || ch == '[')) /* ) } ] */
6045 goto parse_dollar_word;
6046 #if defined (PROCESS_SUBSTITUTION)
6047 /* XXX - technically this should only be recognized at the start of
6048 a word */
6049 else if ((flags & (P_ARRAYSUB|P_DOLBRACE)) && (tflags & LEX_GTLT) && (ch == '(')) /* ) */
6050 goto parse_dollar_word;
6051 #endif
6052 }
6053 /* Parse an old-style command substitution within double quotes as a
6054 single word. */
6055 /* XXX - sh and ksh93 don't do this - XXX */
6056 else if MBTEST(open == '"' && ch == '`')
6057 {
6058 nestret = parse_matched_pair (0, '`', '`', &nestlen, rflags);
6059
6060 CHECK_NESTRET_ERROR ();
6061 APPEND_NESTRET ();
6062
6063 FREE (nestret);
6064 }
6065 else if MBTEST(open != '`' && (tflags & LEX_WASDOL) && (ch == '(' || ch == '{' || ch == '[')) /* ) } ] */
6066 /* check for $(), $[], or ${} inside quoted string. */
6067 {
6068 parse_dollar_word:
6069 if (open == ch) /* undo previous increment */
6070 count--;
6071 if (ch == '(') /* ) */
6072 nestret = parse_comsub (0, '(', ')', &nestlen, (rflags|P_COMMAND) & ~P_DQUOTE);
6073 else if (ch == '{') /* } */
6074 nestret = parse_matched_pair (0, '{', '}', &nestlen, P_FIRSTCLOSE|P_DOLBRACE|rflags);
6075 else if (ch == '[') /* ] */
6076 nestret = parse_matched_pair (0, '[', ']', &nestlen, rflags);
6077
6078 CHECK_NESTRET_ERROR ();
6079 APPEND_NESTRET ();
6080
6081 FREE (nestret);
6082 }
6083 #if defined (PROCESS_SUBSTITUTION)
6084 if MBTEST((ch == '<' || ch == '>') && (tflags & LEX_GTLT) == 0)
6085 tflags |= LEX_GTLT;
6086 else
6087 tflags &= ~LEX_GTLT;
6088 #endif
6089 if MBTEST(ch == '$' && (tflags & LEX_WASDOL) == 0)
6090 tflags |= LEX_WASDOL;
6091 else
6092 tflags &= ~LEX_WASDOL;
6093 }
6094
6095 ret[retind] = '\0';
6096 if (lenp)
6097 *lenp = retind;
6098 /*itrace("parse_matched_pair[%d]: returning %s", line_number, ret);*/
6099 return ret;
6100 }
6101
6102 #if defined (DEBUG)
6103 static void
6104 dump_tflags (flags)
6105 int flags;
6106 {
6107 int f;
6108
6109 f = flags;
6110 fprintf (stderr, "%d -> ", f);
6111 if (f & LEX_WASDOL)
6112 {
6113 f &= ~LEX_WASDOL;
6114 fprintf (stderr, "LEX_WASDOL%s", f ? "|" : "");
6115 }
6116 if (f & LEX_CKCOMMENT)
6117 {
6118 f &= ~LEX_CKCOMMENT;
6119 fprintf (stderr, "LEX_CKCOMMENT%s", f ? "|" : "");
6120 }
6121 if (f & LEX_INCOMMENT)
6122 {
6123 f &= ~LEX_INCOMMENT;
6124 fprintf (stderr, "LEX_INCOMMENT%s", f ? "|" : "");
6125 }
6126 if (f & LEX_PASSNEXT)
6127 {
6128 f &= ~LEX_PASSNEXT;
6129 fprintf (stderr, "LEX_PASSNEXT%s", f ? "|" : "");
6130 }
6131 if (f & LEX_RESWDOK)
6132 {
6133 f &= ~LEX_RESWDOK;
6134 fprintf (stderr, "LEX_RESWDOK%s", f ? "|" : "");
6135 }
6136 if (f & LEX_CKCASE)
6137 {
6138 f &= ~LEX_CKCASE;
6139 fprintf (stderr, "LEX_CKCASE%s", f ? "|" : "");
6140 }
6141 if (f & LEX_INCASE)
6142 {
6143 f &= ~LEX_INCASE;
6144 fprintf (stderr, "LEX_INCASE%s", f ? "|" : "");
6145 }
6146 if (f & LEX_INHEREDOC)
6147 {
6148 f &= ~LEX_INHEREDOC;
6149 fprintf (stderr, "LEX_INHEREDOC%s", f ? "|" : "");
6150 }
6151 if (f & LEX_HEREDELIM)
6152 {
6153 f &= ~LEX_HEREDELIM;
6154 fprintf (stderr, "LEX_HEREDELIM%s", f ? "|" : "");
6155 }
6156 if (f & LEX_STRIPDOC)
6157 {
6158 f &= ~LEX_STRIPDOC;
6159 fprintf (stderr, "LEX_WASDOL%s", f ? "|" : "");
6160 }
6161 if (f & LEX_QUOTEDDOC)
6162 {
6163 f &= ~LEX_QUOTEDDOC;
6164 fprintf (stderr, "LEX_QUOTEDDOC%s", f ? "|" : "");
6165 }
6166 if (f & LEX_INWORD)
6167 {
6168 f &= ~LEX_INWORD;
6169 fprintf (stderr, "LEX_INWORD%s", f ? "|" : "");
6170 }
6171
6172 fprintf (stderr, "\n");
6173 fflush (stderr);
6174 }
6175 #endif
6176
6177 /* Parse a $(...) command substitution. This is messier than I'd like, and
6178 reproduces a lot more of the token-reading code than I'd like. */
6179 static char *
6180 parse_comsub (qc, open, close, lenp, flags)
6181 int qc; /* `"' if this construct is within double quotes */
6182 int open, close;
6183 int *lenp, flags;
6184 {
6185 int count, ch, peekc, tflags, lex_rwlen, lex_wlen, lex_firstind;
6186 int nestlen, ttranslen, start_lineno;
6187 char *ret, *nestret, *ttrans, *heredelim;
6188 int retind, retsize, rflags, hdlen;
6189
6190 /* Posix interp 217 says arithmetic expressions have precedence, so
6191 assume $(( introduces arithmetic expansion and parse accordingly. */
6192 peekc = shell_getc (0);
6193 shell_ungetc (peekc);
6194 if (peekc == '(')
6195 return (parse_matched_pair (qc, open, close, lenp, 0));
6196
6197 /*itrace("parse_comsub: qc = `%c' open = %c close = %c", qc, open, close);*/
6198 count = 1;
6199 tflags = LEX_RESWDOK;
6200
6201 if ((flags & P_COMMAND) && qc != '\'' && qc != '"' && (flags & P_DQUOTE) == 0)
6202 tflags |= LEX_CKCASE;
6203 if ((tflags & LEX_CKCASE) && (interactive == 0 || interactive_comments))
6204 tflags |= LEX_CKCOMMENT;
6205
6206 /* RFLAGS is the set of flags we want to pass to recursive calls. */
6207 rflags = (flags & P_DQUOTE);
6208
6209 ret = (char *)xmalloc (retsize = 64);
6210 retind = 0;
6211
6212 start_lineno = line_number;
6213 lex_rwlen = lex_wlen = 0;
6214
6215 heredelim = 0;
6216 lex_firstind = -1;
6217
6218 while (count)
6219 {
6220 comsub_readchar:
6221 ch = shell_getc (qc != '\'' && (tflags & (LEX_INCOMMENT|LEX_PASSNEXT|LEX_QUOTEDDOC)) == 0);
6222
6223 if (ch == EOF)
6224 {
6225 eof_error:
6226 free (ret);
6227 FREE (heredelim);
6228 parser_error (start_lineno, _("unexpected EOF while looking for matching `%c'"), close);
6229 EOF_Reached = 1; /* XXX */
6230 return (&matched_pair_error);
6231 }
6232
6233 /* If we hit the end of a line and are reading the contents of a here
6234 document, and it's not the same line that the document starts on,
6235 check for this line being the here doc delimiter. Otherwise, if
6236 we're in a here document, mark the next character as the beginning
6237 of a line. */
6238 if (ch == '\n')
6239 {
6240 if ((tflags & LEX_HEREDELIM) && heredelim)
6241 {
6242 tflags &= ~LEX_HEREDELIM;
6243 tflags |= LEX_INHEREDOC;
6244 lex_firstind = retind + 1;
6245 }
6246 else if (tflags & LEX_INHEREDOC)
6247 {
6248 int tind;
6249 tind = lex_firstind;
6250 while ((tflags & LEX_STRIPDOC) && ret[tind] == '\t')
6251 tind++;
6252 if (retind-tind == hdlen && STREQN (ret + tind, heredelim, hdlen))
6253 {
6254 tflags &= ~(LEX_STRIPDOC|LEX_INHEREDOC|LEX_QUOTEDDOC);
6255 /*itrace("parse_comsub:%d: found here doc end `%s'", line_number, ret + tind);*/
6256 free (heredelim);
6257 heredelim = 0;
6258 lex_firstind = -1;
6259 }
6260 else
6261 lex_firstind = retind + 1;
6262 }
6263 }
6264
6265 /* Possible reprompting. */
6266 if (ch == '\n' && SHOULD_PROMPT ())
6267 prompt_again ();
6268
6269 /* XXX -- possibly allow here doc to be delimited by ending right
6270 paren. */
6271 if ((tflags & LEX_INHEREDOC) && ch == close && count == 1)
6272 {
6273 int tind;
6274 /*itrace("parse_comsub:%d: in here doc, ch == close, retind - firstind = %d hdlen = %d retind = %d", line_number, retind-lex_firstind, hdlen, retind);*/
6275 tind = lex_firstind;
6276 while ((tflags & LEX_STRIPDOC) && ret[tind] == '\t')
6277 tind++;
6278 if (retind-tind == hdlen && STREQN (ret + tind, heredelim, hdlen))
6279 {
6280 tflags &= ~(LEX_STRIPDOC|LEX_INHEREDOC|LEX_QUOTEDDOC);
6281 /*itrace("parse_comsub:%d: found here doc end `%*s'", line_number, hdlen, ret + tind);*/
6282 free (heredelim);
6283 heredelim = 0;
6284 lex_firstind = -1;
6285 }
6286 }
6287
6288 /* Don't bother counting parens or doing anything else if in a comment or
6289 here document (not exactly right for here-docs -- if we want to allow
6290 recursive calls to parse_comsub to have their own here documents,
6291 change the LEX_INHEREDOC to LEX_QUOTEDDOC here and uncomment the next
6292 clause below. Note that to make this work completely, we need to make
6293 additional changes to allow xparse_dolparen to work right when the
6294 command substitution is parsed, because read_secondary_line doesn't know
6295 to recursively parse through command substitutions embedded in here-
6296 documents */
6297 if (tflags & (LEX_INCOMMENT|LEX_INHEREDOC))
6298 {
6299 /* Add this character. */
6300 RESIZE_MALLOCED_BUFFER (ret, retind, 1, retsize, 64);
6301 ret[retind++] = ch;
6302
6303 if ((tflags & LEX_INCOMMENT) && ch == '\n')
6304 {
6305 /*itrace("parse_comsub:%d: lex_incomment -> 0 ch = `%c'", line_number, ch);*/
6306 tflags &= ~LEX_INCOMMENT;
6307 }
6308
6309 continue;
6310 }
6311 #if 0
6312 /* If we're going to recursively parse a command substitution inside a
6313 here-document, make sure we call parse_comsub recursively below. See
6314 above for additional caveats. */
6315 if ((tflags & LEX_INHEREDOC) && ((tflags & LEX_WASDOL) == 0 || ch != '(')) /*)*/
6316 {
6317 /* Add this character. */
6318 RESIZE_MALLOCED_BUFFER (ret, retind, 1, retsize, 64);
6319 ret[retind++] = ch;
6320 if MBTEST(ch == '$')
6321 tflags |= LEX_WASDOL;
6322 else
6323 tflags &= ~LEX_WASDOL;
6324 }
6325 #endif
6326
6327 if (tflags & LEX_PASSNEXT) /* last char was backslash */
6328 {
6329 /*itrace("parse_comsub:%d: lex_passnext -> 0 ch = `%c' (%d)", line_number, ch, __LINE__);*/
6330 tflags &= ~LEX_PASSNEXT;
6331 if (qc != '\'' && ch == '\n') /* double-quoted \<newline> disappears. */
6332 {
6333 if (retind > 0)
6334 retind--; /* swallow previously-added backslash */
6335 continue;
6336 }
6337
6338 RESIZE_MALLOCED_BUFFER (ret, retind, 2, retsize, 64);
6339 if MBTEST(ch == CTLESC)
6340 ret[retind++] = CTLESC;
6341 ret[retind++] = ch;
6342 continue;
6343 }
6344
6345 /* If this is a shell break character, we are not in a word. If not,
6346 we either start or continue a word. */
6347 if MBTEST(shellbreak (ch))
6348 {
6349 tflags &= ~LEX_INWORD;
6350 /*itrace("parse_comsub:%d: lex_inword -> 0 ch = `%c' (%d)", line_number, ch, __LINE__);*/
6351 }
6352 else
6353 {
6354 if (tflags & LEX_INWORD)
6355 {
6356 lex_wlen++;
6357 /*itrace("parse_comsub:%d: lex_inword == 1 ch = `%c' lex_wlen = %d (%d)", line_number, ch, lex_wlen, __LINE__);*/
6358 }
6359 else
6360 {
6361 /*itrace("parse_comsub:%d: lex_inword -> 1 ch = `%c' (%d)", line_number, ch, __LINE__);*/
6362 tflags |= LEX_INWORD;
6363 lex_wlen = 0;
6364 if (tflags & LEX_RESWDOK)
6365 lex_rwlen = 0;
6366 }
6367 }
6368
6369 /* Skip whitespace */
6370 if MBTEST(shellblank (ch) && (tflags & LEX_HEREDELIM) == 0 && lex_rwlen == 0)
6371 {
6372 /* Add this character. */
6373 RESIZE_MALLOCED_BUFFER (ret, retind, 1, retsize, 64);
6374 ret[retind++] = ch;
6375 continue;
6376 }
6377
6378 /* Either we are looking for the start of the here-doc delimiter
6379 (lex_firstind == -1) or we are reading one (lex_firstind >= 0).
6380 If this character is a shell break character and we are reading
6381 the delimiter, save it and note that we are now reading a here
6382 document. If we've found the start of the delimiter, note it by
6383 setting lex_firstind. Backslashes can quote shell metacharacters
6384 in here-doc delimiters. */
6385 if (tflags & LEX_HEREDELIM)
6386 {
6387 if (lex_firstind == -1 && shellbreak (ch) == 0)
6388 lex_firstind = retind;
6389 #if 0
6390 else if (heredelim && (tflags & LEX_PASSNEXT) == 0 && ch == '\n')
6391 {
6392 tflags |= LEX_INHEREDOC;
6393 tflags &= ~LEX_HEREDELIM;
6394 lex_firstind = retind + 1;
6395 }
6396 #endif
6397 else if (lex_firstind >= 0 && (tflags & LEX_PASSNEXT) == 0 && shellbreak (ch))
6398 {
6399 if (heredelim == 0)
6400 {
6401 nestret = substring (ret, lex_firstind, retind);
6402 heredelim = string_quote_removal (nestret, 0);
6403 hdlen = STRLEN(heredelim);
6404 /*itrace("parse_comsub:%d: found here doc delimiter `%s' (%d)", line_number, heredelim, hdlen);*/
6405 if (STREQ (heredelim, nestret) == 0)
6406 tflags |= LEX_QUOTEDDOC;
6407 free (nestret);
6408 }
6409 if (ch == '\n')
6410 {
6411 tflags |= LEX_INHEREDOC;
6412 tflags &= ~LEX_HEREDELIM;
6413 lex_firstind = retind + 1;
6414 }
6415 else
6416 lex_firstind = -1;
6417 }
6418 }
6419
6420 /* Meta-characters that can introduce a reserved word. Not perfect yet. */
6421 if MBTEST((tflags & LEX_RESWDOK) == 0 && (tflags & LEX_CKCASE) && (tflags & LEX_INCOMMENT) == 0 && (shellmeta(ch) || ch == '\n'))
6422 {
6423 /* Add this character. */
6424 RESIZE_MALLOCED_BUFFER (ret, retind, 1, retsize, 64);
6425 ret[retind++] = ch;
6426 peekc = shell_getc (1);
6427 if (ch == peekc && (ch == '&' || ch == '|' || ch == ';')) /* two-character tokens */
6428 {
6429 RESIZE_MALLOCED_BUFFER (ret, retind, 1, retsize, 64);
6430 ret[retind++] = peekc;
6431 /*itrace("parse_comsub:%d: set lex_reswordok = 1, ch = `%c'", line_number, ch);*/
6432 tflags |= LEX_RESWDOK;
6433 lex_rwlen = 0;
6434 continue;
6435 }
6436 else if (ch == '\n' || COMSUB_META(ch))
6437 {
6438 shell_ungetc (peekc);
6439 /*itrace("parse_comsub:%d: set lex_reswordok = 1, ch = `%c'", line_number, ch);*/
6440 tflags |= LEX_RESWDOK;
6441 lex_rwlen = 0;
6442 continue;
6443 }
6444 else if (ch == EOF)
6445 goto eof_error;
6446 else
6447 {
6448 /* `unget' the character we just added and fall through */
6449 retind--;
6450 shell_ungetc (peekc);
6451 }
6452 }
6453
6454 /* If we can read a reserved word, try to read one. */
6455 if (tflags & LEX_RESWDOK)
6456 {
6457 if MBTEST(islower ((unsigned char)ch))
6458 {
6459 /* Add this character. */
6460 RESIZE_MALLOCED_BUFFER (ret, retind, 1, retsize, 64);
6461 ret[retind++] = ch;
6462 lex_rwlen++;
6463 continue;
6464 }
6465 else if MBTEST(lex_rwlen == 4 && shellbreak (ch))
6466 {
6467 if (STREQN (ret + retind - 4, "case", 4))
6468 {
6469 tflags |= LEX_INCASE;
6470 tflags &= ~LEX_RESWDOK;
6471 /*itrace("parse_comsub:%d: found `case', lex_incase -> 1 lex_reswdok -> 0", line_number);*/
6472 }
6473 else if (STREQN (ret + retind - 4, "esac", 4))
6474 {
6475 tflags &= ~LEX_INCASE;
6476 /*itrace("parse_comsub:%d: found `esac', lex_incase -> 0 lex_reswdok -> 1", line_number);*/
6477 tflags |= LEX_RESWDOK;
6478 lex_rwlen = 0;
6479 }
6480 else if (STREQN (ret + retind - 4, "done", 4) ||
6481 STREQN (ret + retind - 4, "then", 4) ||
6482 STREQN (ret + retind - 4, "else", 4) ||
6483 STREQN (ret + retind - 4, "elif", 4) ||
6484 STREQN (ret + retind - 4, "time", 4))
6485 {
6486 /* these are four-character reserved words that can be
6487 followed by a reserved word; anything else turns off
6488 the reserved-word-ok flag */
6489 /*itrace("parse_comsub:%d: found `%.4s', lex_reswdok -> 1", line_number, ret+retind-4);*/
6490 tflags |= LEX_RESWDOK;
6491 lex_rwlen = 0;
6492 }
6493 else if (shellmeta (ch) == 0)
6494 {
6495 tflags &= ~LEX_RESWDOK;
6496 /*itrace("parse_comsub:%d: found `%.4s', lex_reswdok -> 0", line_number, ret+retind-4);*/
6497 }
6498 else /* can't be in a reserved word any more */
6499 lex_rwlen = 0;
6500 }
6501 else if MBTEST((tflags & LEX_CKCOMMENT) && ch == '#' && (lex_rwlen == 0 || ((tflags & LEX_INWORD) && lex_wlen == 0)))
6502 ; /* don't modify LEX_RESWDOK if we're starting a comment */
6503 /* Allow `do' followed by space, tab, or newline to preserve the
6504 RESWDOK flag, but reset the reserved word length counter so we
6505 can read another one. */
6506 else if MBTEST(((tflags & LEX_INCASE) == 0) &&
6507 (isblank((unsigned char)ch) || ch == '\n') &&
6508 lex_rwlen == 2 &&
6509 STREQN (ret + retind - 2, "do", 2))
6510 {
6511 /*itrace("parse_comsub:%d: lex_incase == 0 found `%c', found \"do\"", line_number, ch);*/
6512 lex_rwlen = 0;
6513 }
6514 else if MBTEST((tflags & LEX_INCASE) && ch != '\n')
6515 /* If we can read a reserved word and we're in case, we're at the
6516 point where we can read a new pattern list or an esac. We
6517 handle the esac case above. If we read a newline, we want to
6518 leave LEX_RESWDOK alone. If we read anything else, we want to
6519 turn off LEX_RESWDOK, since we're going to read a pattern list. */
6520 {
6521 tflags &= ~LEX_RESWDOK;
6522 /*itrace("parse_comsub:%d: lex_incase == 1 found `%c', lex_reswordok -> 0", line_number, ch);*/
6523 }
6524 else if MBTEST(shellbreak (ch) == 0)
6525 {
6526 tflags &= ~LEX_RESWDOK;
6527 /*itrace("parse_comsub:%d: found `%c', lex_reswordok -> 0", line_number, ch);*/
6528 }
6529 #if 0
6530 /* If we find a space or tab but have read something and it's not
6531 `do', turn off the reserved-word-ok flag */
6532 else if MBTEST(isblank ((unsigned char)ch) && lex_rwlen > 0)
6533 {
6534 tflags &= ~LEX_RESWDOK;
6535 /*itrace("parse_comsub:%d: found `%c', lex_reswordok -> 0", line_number, ch);*/
6536 }
6537 #endif
6538 }
6539
6540 /* Might be the start of a here-doc delimiter */
6541 if MBTEST((tflags & LEX_INCOMMENT) == 0 && (tflags & LEX_CKCASE) && ch == '<')
6542 {
6543 /* Add this character. */
6544 RESIZE_MALLOCED_BUFFER (ret, retind, 1, retsize, 64);
6545 ret[retind++] = ch;
6546 peekc = shell_getc (1);
6547 if (peekc == EOF)
6548 goto eof_error;
6549 if (peekc == ch)
6550 {
6551 RESIZE_MALLOCED_BUFFER (ret, retind, 1, retsize, 64);
6552 ret[retind++] = peekc;
6553 peekc = shell_getc (1);
6554 if (peekc == EOF)
6555 goto eof_error;
6556 if (peekc == '-')
6557 {
6558 RESIZE_MALLOCED_BUFFER (ret, retind, 1, retsize, 64);
6559 ret[retind++] = peekc;
6560 tflags |= LEX_STRIPDOC;
6561 }
6562 else
6563 shell_ungetc (peekc);
6564 if (peekc != '<')
6565 {
6566 tflags |= LEX_HEREDELIM;
6567 lex_firstind = -1;
6568 }
6569 continue;
6570 }
6571 else
6572 {
6573 shell_ungetc (peekc); /* not a here-doc, start over */
6574 continue;
6575 }
6576 }
6577 else if MBTEST((tflags & LEX_CKCOMMENT) && (tflags & LEX_INCOMMENT) == 0 && ch == '#' && (((tflags & LEX_RESWDOK) && lex_rwlen == 0) || ((tflags & LEX_INWORD) && lex_wlen == 0)))
6578 {
6579 /*itrace("parse_comsub:%d: lex_incomment -> 1 (%d)", line_number, __LINE__);*/
6580 tflags |= LEX_INCOMMENT;
6581 }
6582
6583 if MBTEST(ch == CTLESC || ch == CTLNUL) /* special shell escapes */
6584 {
6585 RESIZE_MALLOCED_BUFFER (ret, retind, 2, retsize, 64);
6586 ret[retind++] = CTLESC;
6587 ret[retind++] = ch;
6588 continue;
6589 }
6590 #if 0
6591 else if MBTEST((tflags & LEX_INCASE) && ch == close && close == ')')
6592 tflags &= ~LEX_INCASE; /* XXX */
6593 #endif
6594 else if MBTEST(ch == close && (tflags & LEX_INCASE) == 0) /* ending delimiter */
6595 {
6596 count--;
6597 /*itrace("parse_comsub:%d: found close: count = %d", line_number, count);*/
6598 }
6599 else if MBTEST(((flags & P_FIRSTCLOSE) == 0) && (tflags & LEX_INCASE) == 0 && ch == open) /* nested begin */
6600 {
6601 count++;
6602 /*itrace("parse_comsub:%d: found open: count = %d", line_number, count);*/
6603 }
6604
6605 /* Add this character. */
6606 RESIZE_MALLOCED_BUFFER (ret, retind, 1, retsize, 64);
6607 ret[retind++] = ch;
6608
6609 /* If we just read the ending character, don't bother continuing. */
6610 if (count == 0)
6611 break;
6612
6613 if MBTEST(ch == '\\') /* backslashes */
6614 tflags |= LEX_PASSNEXT;
6615
6616 if MBTEST(shellquote (ch))
6617 {
6618 /* '', ``, or "" inside $(...). */
6619 push_delimiter (dstack, ch);
6620 if MBTEST((tflags & LEX_WASDOL) && ch == '\'') /* $'...' inside group */
6621 nestret = parse_matched_pair (ch, ch, ch, &nestlen, P_ALLOWESC|rflags);
6622 else
6623 nestret = parse_matched_pair (ch, ch, ch, &nestlen, rflags);
6624 pop_delimiter (dstack);
6625 CHECK_NESTRET_ERROR ();
6626
6627 if MBTEST((tflags & LEX_WASDOL) && ch == '\'' && (extended_quote || (rflags & P_DQUOTE) == 0))
6628 {
6629 /* Translate $'...' here. */
6630 ttrans = ansiexpand (nestret, 0, nestlen - 1, &ttranslen);
6631 free (nestret);
6632
6633 if ((rflags & P_DQUOTE) == 0)
6634 {
6635 nestret = sh_single_quote (ttrans);
6636 free (ttrans);
6637 nestlen = strlen (nestret);
6638 }
6639 else
6640 {
6641 nestret = ttrans;
6642 nestlen = ttranslen;
6643 }
6644 retind -= 2; /* back up before the $' */
6645 }
6646 else if MBTEST((tflags & LEX_WASDOL) && ch == '"' && (extended_quote || (rflags & P_DQUOTE) == 0))
6647 {
6648 /* Locale expand $"..." here. */
6649 ttrans = localeexpand (nestret, 0, nestlen - 1, start_lineno, &ttranslen);
6650 free (nestret);
6651
6652 nestret = sh_mkdoublequoted (ttrans, ttranslen, 0);
6653 free (ttrans);
6654 nestlen = ttranslen + 2;
6655 retind -= 2; /* back up before the $" */
6656 }
6657
6658 APPEND_NESTRET ();
6659 FREE (nestret);
6660 }
6661 else if MBTEST((tflags & LEX_WASDOL) && (ch == '(' || ch == '{' || ch == '[')) /* ) } ] */
6662 /* check for $(), $[], or ${} inside command substitution. */
6663 {
6664 if ((tflags & LEX_INCASE) == 0 && open == ch) /* undo previous increment */
6665 count--;
6666 if (ch == '(') /* ) */
6667 nestret = parse_comsub (0, '(', ')', &nestlen, (rflags|P_COMMAND) & ~P_DQUOTE);
6668 else if (ch == '{') /* } */
6669 nestret = parse_matched_pair (0, '{', '}', &nestlen, P_FIRSTCLOSE|P_DOLBRACE|rflags);
6670 else if (ch == '[') /* ] */
6671 nestret = parse_matched_pair (0, '[', ']', &nestlen, rflags);
6672
6673 CHECK_NESTRET_ERROR ();
6674 APPEND_NESTRET ();
6675
6676 FREE (nestret);
6677 }
6678 if MBTEST(ch == '$' && (tflags & LEX_WASDOL) == 0)
6679 tflags |= LEX_WASDOL;
6680 else
6681 tflags &= ~LEX_WASDOL;
6682 }
6683
6684 FREE (heredelim);
6685 ret[retind] = '\0';
6686 if (lenp)
6687 *lenp = retind;
6688 /*itrace("parse_comsub:%d: returning `%s'", line_number, ret);*/
6689 return ret;
6690 }
6691
6692 /* Recursively call the parser to parse a $(...) command substitution. */
6693 char *
6694 xparse_dolparen (base, string, indp, flags)
6695 char *base;
6696 char *string;
6697 int *indp;
6698 int flags;
6699 {
6700 sh_parser_state_t ps;
6701 sh_input_line_state_t ls;
6702 int orig_ind, nc, sflags, orig_eof_token;
6703 char *ret, *ep, *ostring;
6704 #if defined (ALIAS) || defined (DPAREN_ARITHMETIC)
6705 STRING_SAVER *saved_pushed_strings;
6706 #endif
6707
6708 /*debug_parser(1);*/
6709 orig_ind = *indp;
6710 ostring = string;
6711
6712 if (*string == 0)
6713 {
6714 if (flags & SX_NOALLOC)
6715 return (char *)NULL;
6716
6717 ret = xmalloc (1);
6718 ret[0] = '\0';
6719 return ret;
6720 }
6721
6722 /*itrace("xparse_dolparen: size = %d shell_input_line = `%s'", shell_input_line_size, shell_input_line);*/
6723 sflags = SEVAL_NONINT|SEVAL_NOHIST|SEVAL_NOFREE;
6724 if (flags & SX_NOLONGJMP)
6725 sflags |= SEVAL_NOLONGJMP;
6726 save_parser_state (&ps);
6727 save_input_line_state (&ls);
6728 orig_eof_token = shell_eof_token;
6729 #if defined (ALIAS) || defined (DPAREN_ARITHMETIC)
6730 saved_pushed_strings = pushed_string_list; /* separate parsing context */
6731 pushed_string_list = (STRING_SAVER *)NULL;
6732 #endif
6733
6734 /*(*/
6735 parser_state |= PST_CMDSUBST|PST_EOFTOKEN; /* allow instant ')' */ /*(*/
6736 shell_eof_token = ')';
6737
6738 /* Should we save and restore the bison/yacc lookahead token (yychar) here?
6739 Or only if it's not YYEMPTY? */
6740
6741 nc = parse_string (string, "command substitution", sflags, &ep);
6742
6743 if (current_token == shell_eof_token)
6744 yyclearin; /* might want to clear lookahead token unconditionally */
6745
6746 shell_eof_token = orig_eof_token;
6747 restore_parser_state (&ps);
6748 reset_parser ();
6749 /* reset_parser clears shell_input_line and associated variables */
6750 restore_input_line_state (&ls);
6751
6752 #if defined (ALIAS) || defined (DPAREN_ARITHMETIC)
6753 pushed_string_list = saved_pushed_strings;
6754 #endif
6755
6756 token_to_read = 0;
6757
6758 /* If parse_string returns < 0, we need to jump to top level with the
6759 negative of the return value. We abandon the rest of this input line
6760 first */
6761 if (nc < 0)
6762 {
6763 clear_shell_input_line (); /* XXX */
6764 jump_to_top_level (-nc); /* XXX */
6765 }
6766
6767 /* Need to find how many characters parse_and_execute consumed, update
6768 *indp, if flags != 0, copy the portion of the string parsed into RET
6769 and return it. If flags & 1 (SX_NOALLOC) we can return NULL. */
6770
6771 /*(*/
6772 if (ep[-1] != ')')
6773 {
6774 #if DEBUG
6775 if (ep[-1] != '\n')
6776 itrace("xparse_dolparen:%d: ep[-1] != RPAREN (%d), ep = `%s'", line_number, ep[-1], ep);
6777 #endif
6778 while (ep > ostring && ep[-1] == '\n') ep--;
6779 }
6780
6781 nc = ep - ostring;
6782 *indp = ep - base - 1;
6783
6784 /*(*/
6785 #if DEBUG
6786 if (base[*indp] != ')')
6787 itrace("xparse_dolparen:%d: base[%d] != RPAREN (%d), base = `%s'", line_number, *indp, base[*indp], base);
6788 if (*indp < orig_ind)
6789 itrace("xparse_dolparen:%d: *indp (%d) < orig_ind (%d), orig_string = `%s'", line_number, *indp, orig_ind, ostring);
6790 #endif
6791
6792 if (flags & SX_NOALLOC)
6793 return (char *)NULL;
6794
6795 if (nc == 0)
6796 {
6797 ret = xmalloc (1);
6798 ret[0] = '\0';
6799 }
6800 else
6801 ret = substring (ostring, 0, nc - 1);
6802
6803 return ret;
6804 }
6805
6806 #if defined (DPAREN_ARITHMETIC) || defined (ARITH_FOR_COMMAND)
6807 /* Parse a double-paren construct. It can be either an arithmetic
6808 command, an arithmetic `for' command, or a nested subshell. Returns
6809 the parsed token, -1 on error, or -2 if we didn't do anything and
6810 should just go on. */
6811 static int
6812 parse_dparen (c)
6813 int c;
6814 {
6815 int cmdtyp, sline;
6816 char *wval;
6817 WORD_DESC *wd;
6818
6819 #if defined (ARITH_FOR_COMMAND)
6820 if (last_read_token == FOR)
6821 {
6822 arith_for_lineno = line_number;
6823 cmdtyp = parse_arith_cmd (&wval, 0);
6824 if (cmdtyp == 1)
6825 {
6826 wd = alloc_word_desc ();
6827 wd->word = wval;
6828 yylval.word_list = make_word_list (wd, (WORD_LIST *)NULL);
6829 return (ARITH_FOR_EXPRS);
6830 }
6831 else
6832 return -1; /* ERROR */
6833 }
6834 #endif
6835
6836 #if defined (DPAREN_ARITHMETIC)
6837 if (reserved_word_acceptable (last_read_token))
6838 {
6839 sline = line_number;
6840
6841 cmdtyp = parse_arith_cmd (&wval, 0);
6842 if (cmdtyp == 1) /* arithmetic command */
6843 {
6844 wd = alloc_word_desc ();
6845 wd->word = wval;
6846 wd->flags = W_QUOTED|W_NOSPLIT|W_NOGLOB|W_DQUOTE;
6847 yylval.word_list = make_word_list (wd, (WORD_LIST *)NULL);
6848 return (ARITH_CMD);
6849 }
6850 else if (cmdtyp == 0) /* nested subshell */
6851 {
6852 push_string (wval, 0, (alias_t *)NULL);
6853 pushed_string_list->flags = PSH_DPAREN;
6854 if ((parser_state & PST_CASEPAT) == 0)
6855 parser_state |= PST_SUBSHELL;
6856 return (c);
6857 }
6858 else /* ERROR */
6859 return -1;
6860 }
6861 #endif
6862
6863 return -2; /* XXX */
6864 }
6865
6866 /* We've seen a `(('. Look for the matching `))'. If we get it, return 1.
6867 If not, assume it's a nested subshell for backwards compatibility and
6868 return 0. In any case, put the characters we've consumed into a locally-
6869 allocated buffer and make *ep point to that buffer. Return -1 on an
6870 error, for example EOF. */
6871 static int
6872 parse_arith_cmd (ep, adddq)
6873 char **ep;
6874 int adddq;
6875 {
6876 int exp_lineno, rval, c;
6877 char *ttok, *tokstr;
6878 int ttoklen;
6879
6880 exp_lineno = line_number;
6881 ttok = parse_matched_pair (0, '(', ')', &ttoklen, 0);
6882 rval = 1;
6883 if (ttok == &matched_pair_error)
6884 return -1;
6885 /* Check that the next character is the closing right paren. If
6886 not, this is a syntax error. ( */
6887 c = shell_getc (0);
6888 if MBTEST(c != ')')
6889 rval = 0;
6890
6891 tokstr = (char *)xmalloc (ttoklen + 4);
6892
6893 /* if ADDDQ != 0 then (( ... )) -> "..." */
6894 if (rval == 1 && adddq) /* arith cmd, add double quotes */
6895 {
6896 tokstr[0] = '"';
6897 strncpy (tokstr + 1, ttok, ttoklen - 1);
6898 tokstr[ttoklen] = '"';
6899 tokstr[ttoklen+1] = '\0';
6900 }
6901 else if (rval == 1) /* arith cmd, don't add double quotes */
6902 {
6903 strncpy (tokstr, ttok, ttoklen - 1);
6904 tokstr[ttoklen-1] = '\0';
6905 }
6906 else /* nested subshell */
6907 {
6908 tokstr[0] = '(';
6909 strncpy (tokstr + 1, ttok, ttoklen - 1);
6910 tokstr[ttoklen] = ')';
6911 tokstr[ttoklen+1] = c;
6912 tokstr[ttoklen+2] = '\0';
6913 }
6914
6915 *ep = tokstr;
6916 FREE (ttok);
6917 return rval;
6918 }
6919 #endif /* DPAREN_ARITHMETIC || ARITH_FOR_COMMAND */
6920
6921 #if defined (COND_COMMAND)
6922 static void
6923 cond_error ()
6924 {
6925 char *etext;
6926
6927 if (EOF_Reached && cond_token != COND_ERROR) /* [[ */
6928 parser_error (cond_lineno, _("unexpected EOF while looking for `]]'"));
6929 else if (cond_token != COND_ERROR)
6930 {
6931 if (etext = error_token_from_token (cond_token))
6932 {
6933 parser_error (cond_lineno, _("syntax error in conditional expression: unexpected token `%s'"), etext);
6934 free (etext);
6935 }
6936 else
6937 parser_error (cond_lineno, _("syntax error in conditional expression"));
6938 }
6939 }
6940
6941 static COND_COM *
6942 cond_expr ()
6943 {
6944 return (cond_or ());
6945 }
6946
6947 static COND_COM *
6948 cond_or ()
6949 {
6950 COND_COM *l, *r;
6951
6952 l = cond_and ();
6953 if (cond_token == OR_OR)
6954 {
6955 r = cond_or ();
6956 l = make_cond_node (COND_OR, (WORD_DESC *)NULL, l, r);
6957 }
6958 return l;
6959 }
6960
6961 static COND_COM *
6962 cond_and ()
6963 {
6964 COND_COM *l, *r;
6965
6966 l = cond_term ();
6967 if (cond_token == AND_AND)
6968 {
6969 r = cond_and ();
6970 l = make_cond_node (COND_AND, (WORD_DESC *)NULL, l, r);
6971 }
6972 return l;
6973 }
6974
6975 static int
6976 cond_skip_newlines ()
6977 {
6978 while ((cond_token = read_token (READ)) == '\n')
6979 {
6980 if (SHOULD_PROMPT ())
6981 prompt_again ();
6982 }
6983 return (cond_token);
6984 }
6985
6986 #define COND_RETURN_ERROR() \
6987 do { cond_token = COND_ERROR; return ((COND_COM *)NULL); } while (0)
6988
6989 static COND_COM *
6990 cond_term ()
6991 {
6992 WORD_DESC *op;
6993 COND_COM *term, *tleft, *tright;
6994 int tok, lineno;
6995 char *etext;
6996
6997 /* Read a token. It can be a left paren, a `!', a unary operator, or a
6998 word that should be the first argument of a binary operator. Start by
6999 skipping newlines, since this is a compound command. */
7000 tok = cond_skip_newlines ();
7001 lineno = line_number;
7002 if (tok == COND_END)
7003 {
7004 COND_RETURN_ERROR ();
7005 }
7006 else if (tok == '(')
7007 {
7008 term = cond_expr ();
7009 if (cond_token != ')')
7010 {
7011 if (term)
7012 dispose_cond_node (term); /* ( */
7013 if (etext = error_token_from_token (cond_token))
7014 {
7015 parser_error (lineno, _("unexpected token `%s', expected `)'"), etext);
7016 free (etext);
7017 }
7018 else
7019 parser_error (lineno, _("expected `)'"));
7020 COND_RETURN_ERROR ();
7021 }
7022 term = make_cond_node (COND_EXPR, (WORD_DESC *)NULL, term, (COND_COM *)NULL);
7023 (void)cond_skip_newlines ();
7024 }
7025 else if (tok == BANG || (tok == WORD && (yylval.word->word[0] == '!' && yylval.word->word[1] == '\0')))
7026 {
7027 if (tok == WORD)
7028 dispose_word (yylval.word); /* not needed */
7029 term = cond_term ();
7030 if (term)
7031 term->flags |= CMD_INVERT_RETURN;
7032 }
7033 else if (tok == WORD && yylval.word->word[0] == '-' && yylval.word->word[1] && yylval.word->word[2] == 0 && test_unop (yylval.word->word))
7034 {
7035 op = yylval.word;
7036 tok = read_token (READ);
7037 if (tok == WORD)
7038 {
7039 tleft = make_cond_node (COND_TERM, yylval.word, (COND_COM *)NULL, (COND_COM *)NULL);
7040 term = make_cond_node (COND_UNARY, op, tleft, (COND_COM *)NULL);
7041 }
7042 else
7043 {
7044 dispose_word (op);
7045 if (etext = error_token_from_token (tok))
7046 {
7047 parser_error (line_number, _("unexpected argument `%s' to conditional unary operator"), etext);
7048 free (etext);
7049 }
7050 else
7051 parser_error (line_number, _("unexpected argument to conditional unary operator"));
7052 COND_RETURN_ERROR ();
7053 }
7054
7055 (void)cond_skip_newlines ();
7056 }
7057 else if (tok == WORD) /* left argument to binary operator */
7058 {
7059 /* lhs */
7060 tleft = make_cond_node (COND_TERM, yylval.word, (COND_COM *)NULL, (COND_COM *)NULL);
7061
7062 /* binop */
7063 tok = read_token (READ);
7064 if (tok == WORD && test_binop (yylval.word->word))
7065 {
7066 op = yylval.word;
7067 if (op->word[0] == '=' && (op->word[1] == '\0' || (op->word[1] == '=' && op->word[2] == '\0')))
7068 parser_state |= PST_EXTPAT;
7069 else if (op->word[0] == '!' && op->word[1] == '=' && op->word[2] == '\0')
7070 parser_state |= PST_EXTPAT;
7071 }
7072 #if defined (COND_REGEXP)
7073 else if (tok == WORD && STREQ (yylval.word->word, "=~"))
7074 {
7075 op = yylval.word;
7076 parser_state |= PST_REGEXP;
7077 }
7078 #endif
7079 else if (tok == '<' || tok == '>')
7080 op = make_word_from_token (tok); /* ( */
7081 /* There should be a check before blindly accepting the `)' that we have
7082 seen the opening `('. */
7083 else if (tok == COND_END || tok == AND_AND || tok == OR_OR || tok == ')')
7084 {
7085 /* Special case. [[ x ]] is equivalent to [[ -n x ]], just like
7086 the test command. Similarly for [[ x && expr ]] or
7087 [[ x || expr ]] or [[ (x) ]]. */
7088 op = make_word ("-n");
7089 term = make_cond_node (COND_UNARY, op, tleft, (COND_COM *)NULL);
7090 cond_token = tok;
7091 return (term);
7092 }
7093 else
7094 {
7095 if (etext = error_token_from_token (tok))
7096 {
7097 parser_error (line_number, _("unexpected token `%s', conditional binary operator expected"), etext);
7098 free (etext);
7099 }
7100 else
7101 parser_error (line_number, _("conditional binary operator expected"));
7102 dispose_cond_node (tleft);
7103 COND_RETURN_ERROR ();
7104 }
7105
7106 /* rhs */
7107 if (parser_state & PST_EXTPAT)
7108 extended_glob = 1;
7109 tok = read_token (READ);
7110 if (parser_state & PST_EXTPAT)
7111 extended_glob = global_extglob;
7112 parser_state &= ~(PST_REGEXP|PST_EXTPAT);
7113
7114 if (tok == WORD)
7115 {
7116 tright = make_cond_node (COND_TERM, yylval.word, (COND_COM *)NULL, (COND_COM *)NULL);
7117 term = make_cond_node (COND_BINARY, op, tleft, tright);
7118 }
7119 else
7120 {
7121 if (etext = error_token_from_token (tok))
7122 {
7123 parser_error (line_number, _("unexpected argument `%s' to conditional binary operator"), etext);
7124 free (etext);
7125 }
7126 else
7127 parser_error (line_number, _("unexpected argument to conditional binary operator"));
7128 dispose_cond_node (tleft);
7129 dispose_word (op);
7130 COND_RETURN_ERROR ();
7131 }
7132
7133 (void)cond_skip_newlines ();
7134 }
7135 else
7136 {
7137 if (tok < 256)
7138 parser_error (line_number, _("unexpected token `%c' in conditional command"), tok);
7139 else if (etext = error_token_from_token (tok))
7140 {
7141 parser_error (line_number, _("unexpected token `%s' in conditional command"), etext);
7142 free (etext);
7143 }
7144 else
7145 parser_error (line_number, _("unexpected token %d in conditional command"), tok);
7146 COND_RETURN_ERROR ();
7147 }
7148 return (term);
7149 }
7150
7151 /* This is kind of bogus -- we slip a mini recursive-descent parser in
7152 here to handle the conditional statement syntax. */
7153 static COMMAND *
7154 parse_cond_command ()
7155 {
7156 COND_COM *cexp;
7157
7158 global_extglob = extended_glob;
7159 cexp = cond_expr ();
7160 return (make_cond_command (cexp));
7161 }
7162 #endif
7163
7164 #if defined (ARRAY_VARS)
7165 /* When this is called, it's guaranteed that we don't care about anything
7166 in t beyond i. We use a buffer with room for the characters we add just
7167 in case assignment() ends up doing something like parsing a command
7168 substitution that will reallocate atoken. We don't want to write beyond
7169 the end of an allocated buffer. */
7170 static int
7171 token_is_assignment (t, i)
7172 char *t;
7173 int i;
7174 {
7175 int r;
7176 char *atoken;
7177
7178 atoken = xmalloc (i + 3);
7179 memcpy (atoken, t, i);
7180 atoken[i] = '=';
7181 atoken[i+1] = '\0';
7182
7183 r = assignment (atoken, (parser_state & PST_COMPASSIGN) != 0);
7184
7185 free (atoken);
7186
7187 /* XXX - check that r == i to avoid returning false positive for
7188 t containing `=' before t[i]. */
7189 return (r > 0 && r == i);
7190 }
7191
7192 /* XXX - possible changes here for `+=' */
7193 static int
7194 token_is_ident (t, i)
7195 char *t;
7196 int i;
7197 {
7198 unsigned char c;
7199 int r;
7200
7201 c = t[i];
7202 t[i] = '\0';
7203 r = legal_identifier (t);
7204 t[i] = c;
7205 return r;
7206 }
7207 #endif
7208
7209 static int
7210 read_token_word (character)
7211 int character;
7212 {
7213 /* The value for YYLVAL when a WORD is read. */
7214 WORD_DESC *the_word;
7215
7216 /* Index into the token that we are building. */
7217 int token_index;
7218
7219 /* ALL_DIGITS becomes zero when we see a non-digit. */
7220 int all_digit_token;
7221
7222 /* DOLLAR_PRESENT becomes non-zero if we see a `$'. */
7223 int dollar_present;
7224
7225 /* COMPOUND_ASSIGNMENT becomes non-zero if we are parsing a compound
7226 assignment. */
7227 int compound_assignment;
7228
7229 /* QUOTED becomes non-zero if we see one of ("), ('), (`), or (\). */
7230 int quoted;
7231
7232 /* Non-zero means to ignore the value of the next character, and just
7233 to add it no matter what. */
7234 int pass_next_character;
7235
7236 /* The current delimiting character. */
7237 int cd;
7238 int result, peek_char;
7239 char *ttok, *ttrans;
7240 int ttoklen, ttranslen;
7241 intmax_t lvalue;
7242
7243 if (token_buffer_size < TOKEN_DEFAULT_INITIAL_SIZE)
7244 token = (char *)xrealloc (token, token_buffer_size = TOKEN_DEFAULT_INITIAL_SIZE);
7245
7246 token_index = 0;
7247 all_digit_token = DIGIT (character);
7248 dollar_present = quoted = pass_next_character = compound_assignment = 0;
7249
7250 for (;;)
7251 {
7252 if (character == EOF)
7253 goto got_token;
7254
7255 if (pass_next_character)
7256 {
7257 pass_next_character = 0;
7258 goto got_escaped_character;
7259 }
7260
7261 cd = current_delimiter (dstack);
7262
7263 /* Handle backslashes. Quote lots of things when not inside of
7264 double-quotes, quote some things inside of double-quotes. */
7265 if MBTEST(character == '\\')
7266 {
7267 peek_char = shell_getc (0);
7268
7269 /* Backslash-newline is ignored in all cases except
7270 when quoted with single quotes. */
7271 if (peek_char == '\n')
7272 {
7273 character = '\n';
7274 goto next_character;
7275 }
7276 else
7277 {
7278 shell_ungetc (peek_char);
7279
7280 /* If the next character is to be quoted, note it now. */
7281 if (cd == 0 || cd == '`' ||
7282 (cd == '"' && peek_char >= 0 && (sh_syntaxtab[peek_char] & CBSDQUOTE)))
7283 pass_next_character++;
7284
7285 quoted = 1;
7286 goto got_character;
7287 }
7288 }
7289
7290 /* Parse a matched pair of quote characters. */
7291 if MBTEST(shellquote (character))
7292 {
7293 push_delimiter (dstack, character);
7294 ttok = parse_matched_pair (character, character, character, &ttoklen, (character == '`') ? P_COMMAND : 0);
7295 pop_delimiter (dstack);
7296 if (ttok == &matched_pair_error)
7297 return -1; /* Bail immediately. */
7298 RESIZE_MALLOCED_BUFFER (token, token_index, ttoklen + 2,
7299 token_buffer_size, TOKEN_DEFAULT_GROW_SIZE);
7300 token[token_index++] = character;
7301 strcpy (token + token_index, ttok);
7302 token_index += ttoklen;
7303 all_digit_token = 0;
7304 if (character != '`')
7305 quoted = 1;
7306 dollar_present |= (character == '"' && strchr (ttok, '$') != 0);
7307 FREE (ttok);
7308 goto next_character;
7309 }
7310
7311 #ifdef COND_REGEXP
7312 /* When parsing a regexp as a single word inside a conditional command,
7313 we need to special-case characters special to both the shell and
7314 regular expressions. Right now, that is only '(' and '|'. */ /*)*/
7315 if MBTEST((parser_state & PST_REGEXP) && (character == '(' || character == '|')) /*)*/
7316 {
7317 if (character == '|')
7318 goto got_character;
7319
7320 push_delimiter (dstack, character);
7321 ttok = parse_matched_pair (cd, '(', ')', &ttoklen, 0);
7322 pop_delimiter (dstack);
7323 if (ttok == &matched_pair_error)
7324 return -1; /* Bail immediately. */
7325 RESIZE_MALLOCED_BUFFER (token, token_index, ttoklen + 2,
7326 token_buffer_size, TOKEN_DEFAULT_GROW_SIZE);
7327 token[token_index++] = character;
7328 strcpy (token + token_index, ttok);
7329 token_index += ttoklen;
7330 FREE (ttok);
7331 dollar_present = all_digit_token = 0;
7332 goto next_character;
7333 }
7334 #endif /* COND_REGEXP */
7335
7336 #ifdef EXTENDED_GLOB
7337 /* Parse a ksh-style extended pattern matching specification. */
7338 if MBTEST(extended_glob && PATTERN_CHAR (character))
7339 {
7340 peek_char = shell_getc (1);
7341 if MBTEST(peek_char == '(') /* ) */
7342 {
7343 push_delimiter (dstack, peek_char);
7344 ttok = parse_matched_pair (cd, '(', ')', &ttoklen, 0);
7345 pop_delimiter (dstack);
7346 if (ttok == &matched_pair_error)
7347 return -1; /* Bail immediately. */
7348 RESIZE_MALLOCED_BUFFER (token, token_index, ttoklen + 3,
7349 token_buffer_size,
7350 TOKEN_DEFAULT_GROW_SIZE);
7351 token[token_index++] = character;
7352 token[token_index++] = peek_char;
7353 strcpy (token + token_index, ttok);
7354 token_index += ttoklen;
7355 FREE (ttok);
7356 dollar_present = all_digit_token = 0;
7357 goto next_character;
7358 }
7359 else
7360 shell_ungetc (peek_char);
7361 }
7362 #endif /* EXTENDED_GLOB */
7363
7364 /* If the delimiter character is not single quote, parse some of
7365 the shell expansions that must be read as a single word. */
7366 if (shellexp (character))
7367 {
7368 peek_char = shell_getc (1);
7369 /* $(...), <(...), >(...), $((...)), ${...}, and $[...] constructs */
7370 if MBTEST(peek_char == '(' ||
7371 ((peek_char == '{' || peek_char == '[') && character == '$')) /* ) ] } */
7372 {
7373 if (peek_char == '{') /* } */
7374 ttok = parse_matched_pair (cd, '{', '}', &ttoklen, P_FIRSTCLOSE|P_DOLBRACE);
7375 else if (peek_char == '(') /* ) */
7376 {
7377 /* XXX - push and pop the `(' as a delimiter for use by
7378 the command-oriented-history code. This way newlines
7379 appearing in the $(...) string get added to the
7380 history literally rather than causing a possibly-
7381 incorrect `;' to be added. ) */
7382 push_delimiter (dstack, peek_char);
7383 ttok = parse_comsub (cd, '(', ')', &ttoklen, P_COMMAND);
7384 pop_delimiter (dstack);
7385 }
7386 else
7387 ttok = parse_matched_pair (cd, '[', ']', &ttoklen, 0);
7388 if (ttok == &matched_pair_error)
7389 return -1; /* Bail immediately. */
7390 RESIZE_MALLOCED_BUFFER (token, token_index, ttoklen + 3,
7391 token_buffer_size,
7392 TOKEN_DEFAULT_GROW_SIZE);
7393 token[token_index++] = character;
7394 token[token_index++] = peek_char;
7395 strcpy (token + token_index, ttok);
7396 token_index += ttoklen;
7397 FREE (ttok);
7398 dollar_present = 1;
7399 all_digit_token = 0;
7400 goto next_character;
7401 }
7402 /* This handles $'...' and $"..." new-style quoted strings. */
7403 else if MBTEST(character == '$' && (peek_char == '\'' || peek_char == '"'))
7404 {
7405 int first_line;
7406
7407 first_line = line_number;
7408 push_delimiter (dstack, peek_char);
7409 ttok = parse_matched_pair (peek_char, peek_char, peek_char,
7410 &ttoklen,
7411 (peek_char == '\'') ? P_ALLOWESC : 0);
7412 pop_delimiter (dstack);
7413 if (ttok == &matched_pair_error)
7414 return -1;
7415 if (peek_char == '\'')
7416 {
7417 ttrans = ansiexpand (ttok, 0, ttoklen - 1, &ttranslen);
7418 free (ttok);
7419
7420 /* Insert the single quotes and correctly quote any
7421 embedded single quotes (allowed because P_ALLOWESC was
7422 passed to parse_matched_pair). */
7423 ttok = sh_single_quote (ttrans);
7424 free (ttrans);
7425 ttranslen = strlen (ttok);
7426 ttrans = ttok;
7427 }
7428 else
7429 {
7430 /* Try to locale-expand the converted string. */
7431 ttrans = localeexpand (ttok, 0, ttoklen - 1, first_line, &ttranslen);
7432 free (ttok);
7433
7434 /* Add the double quotes back */
7435 ttok = sh_mkdoublequoted (ttrans, ttranslen, 0);
7436 free (ttrans);
7437 ttranslen += 2;
7438 ttrans = ttok;
7439 }
7440
7441 RESIZE_MALLOCED_BUFFER (token, token_index, ttranslen + 1,
7442 token_buffer_size,
7443 TOKEN_DEFAULT_GROW_SIZE);
7444 strcpy (token + token_index, ttrans);
7445 token_index += ttranslen;
7446 FREE (ttrans);
7447 quoted = 1;
7448 all_digit_token = 0;
7449 goto next_character;
7450 }
7451 /* This could eventually be extended to recognize all of the
7452 shell's single-character parameter expansions, and set flags.*/
7453 else if MBTEST(character == '$' && peek_char == '$')
7454 {
7455 RESIZE_MALLOCED_BUFFER (token, token_index, 3,
7456 token_buffer_size,
7457 TOKEN_DEFAULT_GROW_SIZE);
7458 token[token_index++] = '$';
7459 token[token_index++] = peek_char;
7460 dollar_present = 1;
7461 all_digit_token = 0;
7462 goto next_character;
7463 }
7464 else
7465 shell_ungetc (peek_char);
7466 }
7467
7468 #if defined (ARRAY_VARS)
7469 /* Identify possible array subscript assignment; match [...]. If
7470 parser_state&PST_COMPASSIGN, we need to parse [sub]=words treating
7471 `sub' as if it were enclosed in double quotes. */
7472 else if MBTEST(character == '[' && /* ] */
7473 ((token_index > 0 && assignment_acceptable (last_read_token) && token_is_ident (token, token_index)) ||
7474 (token_index == 0 && (parser_state&PST_COMPASSIGN))))
7475 {
7476 ttok = parse_matched_pair (cd, '[', ']', &ttoklen, P_ARRAYSUB);
7477 if (ttok == &matched_pair_error)
7478 return -1; /* Bail immediately. */
7479 RESIZE_MALLOCED_BUFFER (token, token_index, ttoklen + 2,
7480 token_buffer_size,
7481 TOKEN_DEFAULT_GROW_SIZE);
7482 token[token_index++] = character;
7483 strcpy (token + token_index, ttok);
7484 token_index += ttoklen;
7485 FREE (ttok);
7486 all_digit_token = 0;
7487 goto next_character;
7488 }
7489 /* Identify possible compound array variable assignment. */
7490 else if MBTEST(character == '=' && token_index > 0 && (assignment_acceptable (last_read_token) || (parser_state & PST_ASSIGNOK)) && token_is_assignment (token, token_index))
7491 {
7492 peek_char = shell_getc (1);
7493 if MBTEST(peek_char == '(') /* ) */
7494 {
7495 ttok = parse_compound_assignment (&ttoklen);
7496
7497 RESIZE_MALLOCED_BUFFER (token, token_index, ttoklen + 4,
7498 token_buffer_size,
7499 TOKEN_DEFAULT_GROW_SIZE);
7500
7501 token[token_index++] = '=';
7502 token[token_index++] = '(';
7503 if (ttok)
7504 {
7505 strcpy (token + token_index, ttok);
7506 token_index += ttoklen;
7507 }
7508 token[token_index++] = ')';
7509 FREE (ttok);
7510 all_digit_token = 0;
7511 compound_assignment = 1;
7512 #if 1
7513 goto next_character;
7514 #else
7515 goto got_token; /* ksh93 seems to do this */
7516 #endif
7517 }
7518 else
7519 shell_ungetc (peek_char);
7520 }
7521 #endif
7522
7523 /* When not parsing a multi-character word construct, shell meta-
7524 characters break words. */
7525 if MBTEST(shellbreak (character))
7526 {
7527 shell_ungetc (character);
7528 goto got_token;
7529 }
7530
7531 got_character:
7532 if (character == CTLESC || character == CTLNUL)
7533 {
7534 RESIZE_MALLOCED_BUFFER (token, token_index, 2, token_buffer_size,
7535 TOKEN_DEFAULT_GROW_SIZE);
7536 token[token_index++] = CTLESC;
7537 }
7538 else
7539 got_escaped_character:
7540 RESIZE_MALLOCED_BUFFER (token, token_index, 1, token_buffer_size,
7541 TOKEN_DEFAULT_GROW_SIZE);
7542
7543 token[token_index++] = character;
7544
7545 all_digit_token &= DIGIT (character);
7546 dollar_present |= character == '$';
7547
7548 next_character:
7549 if (character == '\n' && SHOULD_PROMPT ())
7550 prompt_again ();
7551
7552 /* We want to remove quoted newlines (that is, a \<newline> pair)
7553 unless we are within single quotes or pass_next_character is
7554 set (the shell equivalent of literal-next). */
7555 cd = current_delimiter (dstack);
7556 character = shell_getc (cd != '\'' && pass_next_character == 0);
7557 } /* end for (;;) */
7558
7559 got_token:
7560
7561 /* Calls to RESIZE_MALLOCED_BUFFER ensure there is sufficient room. */
7562 token[token_index] = '\0';
7563
7564 /* Check to see what thing we should return. If the last_read_token
7565 is a `<', or a `&', or the character which ended this token is
7566 a '>' or '<', then, and ONLY then, is this input token a NUMBER.
7567 Otherwise, it is just a word, and should be returned as such. */
7568 if MBTEST(all_digit_token && (character == '<' || character == '>' ||
7569 last_read_token == LESS_AND ||
7570 last_read_token == GREATER_AND))
7571 {
7572 if (legal_number (token, &lvalue) && (int)lvalue == lvalue)
7573 {
7574 yylval.number = lvalue;
7575 return (NUMBER);
7576 }
7577 }
7578
7579 /* Check for special case tokens. */
7580 result = (last_shell_getc_is_singlebyte) ? special_case_tokens (token) : -1;
7581 if (result >= 0)
7582 return result;
7583
7584 #if defined (ALIAS)
7585 /* Posix.2 does not allow reserved words to be aliased, so check for all
7586 of them, including special cases, before expanding the current token
7587 as an alias. */
7588 if MBTEST(posixly_correct)
7589 CHECK_FOR_RESERVED_WORD (token);
7590
7591 /* Aliases are expanded iff EXPAND_ALIASES is non-zero, and quoting
7592 inhibits alias expansion. */
7593 if (expand_aliases && quoted == 0)
7594 {
7595 result = alias_expand_token (token);
7596 if (result == RE_READ_TOKEN)
7597 return (RE_READ_TOKEN);
7598 else if (result == NO_EXPANSION)
7599 parser_state &= ~PST_ALEXPNEXT;
7600 }
7601
7602 /* If not in Posix.2 mode, check for reserved words after alias
7603 expansion. */
7604 if MBTEST(posixly_correct == 0)
7605 #endif
7606 CHECK_FOR_RESERVED_WORD (token);
7607
7608 the_word = alloc_word_desc ();
7609 the_word->word = (char *)xmalloc (1 + token_index);
7610 the_word->flags = 0;
7611 strcpy (the_word->word, token);
7612 if (dollar_present)
7613 the_word->flags |= W_HASDOLLAR;
7614 if (quoted)
7615 the_word->flags |= W_QUOTED; /*(*/
7616 if (compound_assignment && token[token_index-1] == ')')
7617 the_word->flags |= W_COMPASSIGN;
7618 /* A word is an assignment if it appears at the beginning of a
7619 simple command, or after another assignment word. This is
7620 context-dependent, so it cannot be handled in the grammar. */
7621 if (assignment (token, (parser_state & PST_COMPASSIGN) != 0))
7622 {
7623 the_word->flags |= W_ASSIGNMENT;
7624 /* Don't perform word splitting on assignment statements. */
7625 if (assignment_acceptable (last_read_token) || (parser_state & PST_COMPASSIGN) != 0)
7626 {
7627 the_word->flags |= W_NOSPLIT;
7628 if (parser_state & PST_COMPASSIGN)
7629 the_word->flags |= W_NOGLOB; /* XXX - W_NOBRACE? */
7630 }
7631 }
7632
7633 if (command_token_position (last_read_token))
7634 {
7635 struct builtin *b;
7636 b = builtin_address_internal (token, 0);
7637 if (b && (b->flags & ASSIGNMENT_BUILTIN))
7638 parser_state |= PST_ASSIGNOK;
7639 else if (STREQ (token, "eval") || STREQ (token, "let"))
7640 parser_state |= PST_ASSIGNOK;
7641 }
7642
7643 yylval.word = the_word;
7644
7645 /* should we check that quoted == 0 as well? */
7646 if (token[0] == '{' && token[token_index-1] == '}' &&
7647 (character == '<' || character == '>'))
7648 {
7649 /* can use token; already copied to the_word */
7650 token[token_index-1] = '\0';
7651 #if defined (ARRAY_VARS)
7652 if (legal_identifier (token+1) || valid_array_reference (token+1, 0))
7653 #else
7654 if (legal_identifier (token+1))
7655 #endif
7656 {
7657 strcpy (the_word->word, token+1);
7658 /* itrace("read_token_word: returning REDIR_WORD for %s", the_word->word); */
7659 yylval.word = the_word; /* accommodate recursive call */
7660 return (REDIR_WORD);
7661 }
7662 else
7663 /* valid_array_reference can call the parser recursively; need to
7664 make sure that yylval.word doesn't change if we are going to
7665 return WORD or ASSIGNMENT_WORD */
7666 yylval.word = the_word;
7667 }
7668
7669 result = ((the_word->flags & (W_ASSIGNMENT|W_NOSPLIT)) == (W_ASSIGNMENT|W_NOSPLIT))
7670 ? ASSIGNMENT_WORD : WORD;
7671
7672 switch (last_read_token)
7673 {
7674 case FUNCTION:
7675 parser_state |= PST_ALLOWOPNBRC;
7676 function_dstart = line_number;
7677 break;
7678 case CASE:
7679 case SELECT:
7680 case FOR:
7681 if (word_top < MAX_CASE_NEST)
7682 word_top++;
7683 word_lineno[word_top] = line_number;
7684 expecting_in_token++;
7685 break;
7686 }
7687
7688 return (result);
7689 }
7690
7691 /* Return 1 if TOKSYM is a token that after being read would allow
7692 a reserved word to be seen, else 0. */
7693 static int
7694 reserved_word_acceptable (toksym)
7695 int toksym;
7696 {
7697 switch (toksym)
7698 {
7699 case '\n':
7700 case ';':
7701 case '(':
7702 case ')':
7703 case '|':
7704 case '&':
7705 case '{':
7706 case '}': /* XXX */
7707 case AND_AND:
7708 case BANG:
7709 case BAR_AND:
7710 case DO:
7711 case DONE:
7712 case ELIF:
7713 case ELSE:
7714 case ESAC:
7715 case FI:
7716 case IF:
7717 case OR_OR:
7718 case SEMI_SEMI:
7719 case SEMI_AND:
7720 case SEMI_SEMI_AND:
7721 case THEN:
7722 case TIME:
7723 case TIMEOPT:
7724 case TIMEIGN:
7725 case COPROC:
7726 case UNTIL:
7727 case WHILE:
7728 case 0:
7729 return 1;
7730 default:
7731 #if defined (COPROCESS_SUPPORT)
7732 if (last_read_token == WORD && token_before_that == COPROC)
7733 return 1;
7734 #endif
7735 if (last_read_token == WORD && token_before_that == FUNCTION)
7736 return 1;
7737 return 0;
7738 }
7739 }
7740
7741 /* Return the index of TOKEN in the alist of reserved words, or -1 if
7742 TOKEN is not a shell reserved word. */
7743 int
7744 find_reserved_word (tokstr)
7745 char *tokstr;
7746 {
7747 int i;
7748 for (i = 0; word_token_alist[i].word; i++)
7749 if (STREQ (tokstr, word_token_alist[i].word))
7750 return i;
7751 return -1;
7752 }
7753
7754 /* An interface to let the rest of the shell (primarily the completion
7755 system) know what the parser is expecting. */
7756 int
7757 parser_in_command_position ()
7758 {
7759 return (command_token_position (last_read_token));
7760 }
7761
7762 #if 0
7763 #if defined (READLINE)
7764 /* Called after each time readline is called. This insures that whatever
7765 the new prompt string is gets propagated to readline's local prompt
7766 variable. */
7767 static void
7768 reset_readline_prompt ()
7769 {
7770 char *temp_prompt;
7771
7772 if (prompt_string_pointer)
7773 {
7774 temp_prompt = (*prompt_string_pointer)
7775 ? decode_prompt_string (*prompt_string_pointer)
7776 : (char *)NULL;
7777
7778 if (temp_prompt == 0)
7779 {
7780 temp_prompt = (char *)xmalloc (1);
7781 temp_prompt[0] = '\0';
7782 }
7783
7784 FREE (current_readline_prompt);
7785 current_readline_prompt = temp_prompt;
7786 }
7787 }
7788 #endif /* READLINE */
7789 #endif /* 0 */
7790
7791 #if defined (HISTORY)
7792 /* A list of tokens which can be followed by newlines, but not by
7793 semi-colons. When concatenating multiple lines of history, the
7794 newline separator for such tokens is replaced with a space. */
7795 static const int no_semi_successors[] = {
7796 '\n', '{', '(', ')', ';', '&', '|',
7797 CASE, DO, ELSE, IF, SEMI_SEMI, SEMI_AND, SEMI_SEMI_AND, THEN, UNTIL,
7798 WHILE, AND_AND, OR_OR, IN,
7799 0
7800 };
7801
7802 /* If we are not within a delimited expression, try to be smart
7803 about which separators can be semi-colons and which must be
7804 newlines. Returns the string that should be added into the
7805 history entry. LINE is the line we're about to add; it helps
7806 make some more intelligent decisions in certain cases. */
7807 char *
7808 history_delimiting_chars (line)
7809 const char *line;
7810 {
7811 static int last_was_heredoc = 0; /* was the last entry the start of a here document? */
7812 register int i;
7813
7814 if ((parser_state & PST_HEREDOC) == 0)
7815 last_was_heredoc = 0;
7816
7817 if (dstack.delimiter_depth != 0)
7818 return ("\n");
7819
7820 /* We look for current_command_line_count == 2 because we are looking to
7821 add the first line of the body of the here document (the second line
7822 of the command). We also keep LAST_WAS_HEREDOC as a private sentinel
7823 variable to note when we think we added the first line of a here doc
7824 (the one with a "<<" somewhere in it) */
7825 if (parser_state & PST_HEREDOC)
7826 {
7827 if (last_was_heredoc)
7828 {
7829 last_was_heredoc = 0;
7830 return "\n";
7831 }
7832 return (here_doc_first_line ? "\n" : "");
7833 }
7834
7835 if (parser_state & PST_COMPASSIGN)
7836 return (" ");
7837
7838 /* First, handle some special cases. */
7839 /*(*/
7840 /* If we just read `()', assume it's a function definition, and don't
7841 add a semicolon. If the token before the `)' was not `(', and we're
7842 not in the midst of parsing a case statement, assume it's a
7843 parenthesized command and add the semicolon. */
7844 /*)(*/
7845 if (token_before_that == ')')
7846 {
7847 if (two_tokens_ago == '(') /*)*/ /* function def */
7848 return " ";
7849 /* This does not work for subshells inside case statement
7850 command lists. It's a suboptimal solution. */
7851 else if (parser_state & PST_CASESTMT) /* case statement pattern */
7852 return " ";
7853 else
7854 return "; "; /* (...) subshell */
7855 }
7856 else if (token_before_that == WORD && two_tokens_ago == FUNCTION)
7857 return " "; /* function def using `function name' without `()' */
7858
7859 /* If we're not in a here document, but we think we're about to parse one,
7860 and we would otherwise return a `;', return a newline to delimit the
7861 line with the here-doc delimiter */
7862 else if ((parser_state & PST_HEREDOC) == 0 && current_command_line_count > 1 && last_read_token == '\n' && strstr (line, "<<"))
7863 {
7864 last_was_heredoc = 1;
7865 return "\n";
7866 }
7867 else if ((parser_state & PST_HEREDOC) == 0 && current_command_line_count > 1 && need_here_doc > 0)
7868 return "\n";
7869 else if (token_before_that == WORD && two_tokens_ago == FOR)
7870 {
7871 /* Tricky. `for i\nin ...' should not have a semicolon, but
7872 `for i\ndo ...' should. We do what we can. */
7873 for (i = shell_input_line_index; whitespace (shell_input_line[i]); i++)
7874 ;
7875 if (shell_input_line[i] && shell_input_line[i] == 'i' && shell_input_line[i+1] == 'n')
7876 return " ";
7877 return ";";
7878 }
7879 else if (two_tokens_ago == CASE && token_before_that == WORD && (parser_state & PST_CASESTMT))
7880 return " ";
7881
7882 for (i = 0; no_semi_successors[i]; i++)
7883 {
7884 if (token_before_that == no_semi_successors[i])
7885 return (" ");
7886 }
7887
7888 if (line_isblank (line))
7889 return ("");
7890
7891 return ("; ");
7892 }
7893 #endif /* HISTORY */
7894
7895 /* Issue a prompt, or prepare to issue a prompt when the next character
7896 is read. */
7897 static void
7898 prompt_again ()
7899 {
7900 char *temp_prompt;
7901
7902 if (interactive == 0 || expanding_alias ()) /* XXX */
7903 return;
7904
7905 ps1_prompt = get_string_value ("PS1");
7906 ps2_prompt = get_string_value ("PS2");
7907
7908 ps0_prompt = get_string_value ("PS0");
7909
7910 if (!prompt_string_pointer)
7911 prompt_string_pointer = &ps1_prompt;
7912
7913 temp_prompt = *prompt_string_pointer
7914 ? decode_prompt_string (*prompt_string_pointer)
7915 : (char *)NULL;
7916
7917 if (temp_prompt == 0)
7918 {
7919 temp_prompt = (char *)xmalloc (1);
7920 temp_prompt[0] = '\0';
7921 }
7922
7923 current_prompt_string = *prompt_string_pointer;
7924 prompt_string_pointer = &ps2_prompt;
7925
7926 #if defined (READLINE)
7927 if (!no_line_editing)
7928 {
7929 FREE (current_readline_prompt);
7930 current_readline_prompt = temp_prompt;
7931 }
7932 else
7933 #endif /* READLINE */
7934 {
7935 FREE (current_decoded_prompt);
7936 current_decoded_prompt = temp_prompt;
7937 }
7938 }
7939
7940 int
7941 get_current_prompt_level ()
7942 {
7943 return ((current_prompt_string && current_prompt_string == ps2_prompt) ? 2 : 1);
7944 }
7945
7946 void
7947 set_current_prompt_level (x)
7948 int x;
7949 {
7950 prompt_string_pointer = (x == 2) ? &ps2_prompt : &ps1_prompt;
7951 current_prompt_string = *prompt_string_pointer;
7952 }
7953
7954 static void
7955 print_prompt ()
7956 {
7957 fprintf (stderr, "%s", current_decoded_prompt);
7958 fflush (stderr);
7959 }
7960
7961 #if defined (HISTORY)
7962 /* The history library increments the history offset as soon as it stores
7963 the first line of a potentially multi-line command, so we compensate
7964 here by returning one fewer when appropriate. */
7965 static int
7966 prompt_history_number (pmt)
7967 char *pmt;
7968 {
7969 int ret;
7970
7971 ret = history_number ();
7972 if (ret == 1)
7973 return ret;
7974
7975 if (pmt == ps1_prompt) /* are we expanding $PS1? */
7976 return ret;
7977 else if (pmt == ps2_prompt && command_oriented_history == 0)
7978 return ret; /* not command oriented history */
7979 else if (pmt == ps2_prompt && command_oriented_history && current_command_first_line_saved)
7980 return ret - 1;
7981 else
7982 return ret - 1; /* PS0, PS4, ${var@P}, PS2 other cases */
7983 }
7984 #endif
7985
7986 /* Return a string which will be printed as a prompt. The string
7987 may contain special characters which are decoded as follows:
7988
7989 \a bell (ascii 07)
7990 \d the date in Day Mon Date format
7991 \e escape (ascii 033)
7992 \h the hostname up to the first `.'
7993 \H the hostname
7994 \j the number of active jobs
7995 \l the basename of the shell's tty device name
7996 \n CRLF
7997 \r CR
7998 \s the name of the shell
7999 \t the time in 24-hour hh:mm:ss format
8000 \T the time in 12-hour hh:mm:ss format
8001 \@ the time in 12-hour hh:mm am/pm format
8002 \A the time in 24-hour hh:mm format
8003 \D{fmt} the result of passing FMT to strftime(3)
8004 \u your username
8005 \v the version of bash (e.g., 2.00)
8006 \V the release of bash, version + patchlevel (e.g., 2.00.0)
8007 \w the current working directory
8008 \W the last element of $PWD
8009 \! the history number of this command
8010 \# the command number of this command
8011 \$ a $ or a # if you are root
8012 \nnn character code nnn in octal
8013 \\ a backslash
8014 \[ begin a sequence of non-printing chars
8015 \] end a sequence of non-printing chars
8016 */
8017 #define PROMPT_GROWTH 48
8018 char *
8019 decode_prompt_string (string)
8020 char *string;
8021 {
8022 WORD_LIST *list;
8023 char *result, *t, *orig_string;
8024 struct dstack save_dstack;
8025 int last_exit_value, last_comsub_pid;
8026 #if defined (PROMPT_STRING_DECODE)
8027 size_t result_size;
8028 int result_index;
8029 int c, n, i;
8030 char *temp, *t_host, octal_string[4];
8031 struct tm *tm;
8032 time_t the_time;
8033 char timebuf[128];
8034 char *timefmt;
8035
8036 result = (char *)xmalloc (result_size = PROMPT_GROWTH);
8037 result[result_index = 0] = 0;
8038 temp = (char *)NULL;
8039 orig_string = string;
8040
8041 while (c = *string++)
8042 {
8043 if (posixly_correct && c == '!')
8044 {
8045 if (*string == '!')
8046 {
8047 temp = savestring ("!");
8048 goto add_string;
8049 }
8050 else
8051 {
8052 #if !defined (HISTORY)
8053 temp = savestring ("1");
8054 #else /* HISTORY */
8055 temp = itos (prompt_history_number (orig_string));
8056 #endif /* HISTORY */
8057 string--; /* add_string increments string again. */
8058 goto add_string;
8059 }
8060 }
8061 if (c == '\\')
8062 {
8063 c = *string;
8064
8065 switch (c)
8066 {
8067 case '0':
8068 case '1':
8069 case '2':
8070 case '3':
8071 case '4':
8072 case '5':
8073 case '6':
8074 case '7':
8075 strncpy (octal_string, string, 3);
8076 octal_string[3] = '\0';
8077
8078 n = read_octal (octal_string);
8079 temp = (char *)xmalloc (3);
8080
8081 if (n == CTLESC || n == CTLNUL)
8082 {
8083 temp[0] = CTLESC;
8084 temp[1] = n;
8085 temp[2] = '\0';
8086 }
8087 else if (n == -1)
8088 {
8089 temp[0] = '\\';
8090 temp[1] = '\0';
8091 }
8092 else
8093 {
8094 temp[0] = n;
8095 temp[1] = '\0';
8096 }
8097
8098 for (c = 0; n != -1 && c < 3 && ISOCTAL (*string); c++)
8099 string++;
8100
8101 c = 0; /* tested at add_string: */
8102 goto add_string;
8103
8104 case 'd':
8105 case 't':
8106 case 'T':
8107 case '@':
8108 case 'A':
8109 /* Make the current time/date into a string. */
8110 (void) time (&the_time);
8111 #if defined (HAVE_TZSET)
8112 sv_tz ("TZ"); /* XXX -- just make sure */
8113 #endif
8114 tm = localtime (&the_time);
8115
8116 if (c == 'd')
8117 n = strftime (timebuf, sizeof (timebuf), "%a %b %d", tm);
8118 else if (c == 't')
8119 n = strftime (timebuf, sizeof (timebuf), "%H:%M:%S", tm);
8120 else if (c == 'T')
8121 n = strftime (timebuf, sizeof (timebuf), "%I:%M:%S", tm);
8122 else if (c == '@')
8123 n = strftime (timebuf, sizeof (timebuf), "%I:%M %p", tm);
8124 else if (c == 'A')
8125 n = strftime (timebuf, sizeof (timebuf), "%H:%M", tm);
8126
8127 if (n == 0)
8128 timebuf[0] = '\0';
8129 else
8130 timebuf[sizeof(timebuf) - 1] = '\0';
8131
8132 temp = savestring (timebuf);
8133 goto add_string;
8134
8135 case 'D': /* strftime format */
8136 if (string[1] != '{') /* } */
8137 goto not_escape;
8138
8139 (void) time (&the_time);
8140 tm = localtime (&the_time);
8141 string += 2; /* skip { */
8142 timefmt = xmalloc (strlen (string) + 3);
8143 for (t = timefmt; *string && *string != '}'; )
8144 *t++ = *string++;
8145 *t = '\0';
8146 c = *string; /* tested at add_string */
8147 if (timefmt[0] == '\0')
8148 {
8149 timefmt[0] = '%';
8150 timefmt[1] = 'X'; /* locale-specific current time */
8151 timefmt[2] = '\0';
8152 }
8153 n = strftime (timebuf, sizeof (timebuf), timefmt, tm);
8154 free (timefmt);
8155
8156 if (n == 0)
8157 timebuf[0] = '\0';
8158 else
8159 timebuf[sizeof(timebuf) - 1] = '\0';
8160
8161 if (promptvars || posixly_correct)
8162 /* Make sure that expand_prompt_string is called with a
8163 second argument of Q_DOUBLE_QUOTES if we use this
8164 function here. */
8165 temp = sh_backslash_quote_for_double_quotes (timebuf);
8166 else
8167 temp = savestring (timebuf);
8168 goto add_string;
8169
8170 case 'n':
8171 temp = (char *)xmalloc (3);
8172 temp[0] = no_line_editing ? '\n' : '\r';
8173 temp[1] = no_line_editing ? '\0' : '\n';
8174 temp[2] = '\0';
8175 goto add_string;
8176
8177 case 's':
8178 temp = base_pathname (shell_name);
8179 /* Try to quote anything the user can set in the file system */
8180 if (promptvars || posixly_correct)
8181 temp = sh_backslash_quote_for_double_quotes (temp);
8182 else
8183 temp = savestring (temp);
8184 goto add_string;
8185
8186 case 'v':
8187 case 'V':
8188 temp = (char *)xmalloc (16);
8189 if (c == 'v')
8190 strcpy (temp, dist_version);
8191 else
8192 sprintf (temp, "%s.%d", dist_version, patch_level);
8193 goto add_string;
8194
8195 case 'w':
8196 case 'W':
8197 {
8198 /* Use the value of PWD because it is much more efficient. */
8199 char t_string[PATH_MAX];
8200 int tlen;
8201
8202 temp = get_string_value ("PWD");
8203
8204 if (temp == 0)
8205 {
8206 if (getcwd (t_string, sizeof(t_string)) == 0)
8207 {
8208 t_string[0] = '.';
8209 tlen = 1;
8210 }
8211 else
8212 tlen = strlen (t_string);
8213 }
8214 else
8215 {
8216 tlen = sizeof (t_string) - 1;
8217 strncpy (t_string, temp, tlen);
8218 }
8219 t_string[tlen] = '\0';
8220
8221 #if defined (MACOSX)
8222 /* Convert from "fs" format to "input" format */
8223 temp = fnx_fromfs (t_string, strlen (t_string));
8224 if (temp != t_string)
8225 strcpy (t_string, temp);
8226 #endif
8227
8228 #define ROOT_PATH(x) ((x)[0] == '/' && (x)[1] == 0)
8229 #define DOUBLE_SLASH_ROOT(x) ((x)[0] == '/' && (x)[1] == '/' && (x)[2] == 0)
8230 /* Abbreviate \W as ~ if $PWD == $HOME */
8231 if (c == 'W' && (((t = get_string_value ("HOME")) == 0) || STREQ (t, t_string) == 0))
8232 {
8233 if (ROOT_PATH (t_string) == 0 && DOUBLE_SLASH_ROOT (t_string) == 0)
8234 {
8235 t = strrchr (t_string, '/');
8236 if (t)
8237 memmove (t_string, t + 1, strlen (t)); /* strlen(t) to copy NULL */
8238 }
8239 }
8240 #undef ROOT_PATH
8241 #undef DOUBLE_SLASH_ROOT
8242 else
8243 {
8244 /* polite_directory_format is guaranteed to return a string
8245 no longer than PATH_MAX - 1 characters. */
8246 temp = polite_directory_format (t_string);
8247 if (temp != t_string)
8248 strcpy (t_string, temp);
8249 }
8250
8251 temp = trim_pathname (t_string, PATH_MAX - 1);
8252 /* If we're going to be expanding the prompt string later,
8253 quote the directory name. */
8254 if (promptvars || posixly_correct)
8255 /* Make sure that expand_prompt_string is called with a
8256 second argument of Q_DOUBLE_QUOTES if we use this
8257 function here. */
8258 temp = sh_backslash_quote_for_double_quotes (t_string);
8259 else
8260 temp = savestring (t_string);
8261
8262 goto add_string;
8263 }
8264
8265 case 'u':
8266 if (current_user.user_name == 0)
8267 get_current_user_info ();
8268 temp = savestring (current_user.user_name);
8269 goto add_string;
8270
8271 case 'h':
8272 case 'H':
8273 t_host = savestring (current_host_name);
8274 if (c == 'h' && (t = (char *)strchr (t_host, '.')))
8275 *t = '\0';
8276 if (promptvars || posixly_correct)
8277 /* Make sure that expand_prompt_string is called with a
8278 second argument of Q_DOUBLE_QUOTES if we use this
8279 function here. */
8280 temp = sh_backslash_quote_for_double_quotes (t_host);
8281 else
8282 temp = savestring (t_host);
8283 free (t_host);
8284 goto add_string;
8285
8286 case '#':
8287 n = current_command_number;
8288 /* If we have already incremented current_command_number (PS4,
8289 ${var@P}), compensate */
8290 if (orig_string != ps0_prompt && orig_string != ps1_prompt && orig_string != ps2_prompt)
8291 n--;
8292 temp = itos (n);
8293 goto add_string;
8294
8295 case '!':
8296 #if !defined (HISTORY)
8297 temp = savestring ("1");
8298 #else /* HISTORY */
8299 temp = itos (prompt_history_number (orig_string));
8300 #endif /* HISTORY */
8301 goto add_string;
8302
8303 case '$':
8304 t = temp = (char *)xmalloc (3);
8305 if ((promptvars || posixly_correct) && (current_user.euid != 0))
8306 *t++ = '\\';
8307 *t++ = current_user.euid == 0 ? '#' : '$';
8308 *t = '\0';
8309 goto add_string;
8310
8311 case 'j':
8312 temp = itos (count_all_jobs ());
8313 goto add_string;
8314
8315 case 'l':
8316 #if defined (HAVE_TTYNAME)
8317 temp = (char *)ttyname (fileno (stdin));
8318 t = temp ? base_pathname (temp) : "tty";
8319 temp = savestring (t);
8320 #else
8321 temp = savestring ("tty");
8322 #endif /* !HAVE_TTYNAME */
8323 goto add_string;
8324
8325 #if defined (READLINE)
8326 case '[':
8327 case ']':
8328 if (no_line_editing)
8329 {
8330 string++;
8331 break;
8332 }
8333 temp = (char *)xmalloc (3);
8334 n = (c == '[') ? RL_PROMPT_START_IGNORE : RL_PROMPT_END_IGNORE;
8335 i = 0;
8336 if (n == CTLESC || n == CTLNUL)
8337 temp[i++] = CTLESC;
8338 temp[i++] = n;
8339 temp[i] = '\0';
8340 goto add_string;
8341 #endif /* READLINE */
8342
8343 case '\\':
8344 case 'a':
8345 case 'e':
8346 case 'r':
8347 temp = (char *)xmalloc (2);
8348 if (c == 'a')
8349 temp[0] = '\07';
8350 else if (c == 'e')
8351 temp[0] = '\033';
8352 else if (c == 'r')
8353 temp[0] = '\r';
8354 else /* (c == '\\') */
8355 temp[0] = c;
8356 temp[1] = '\0';
8357 goto add_string;
8358
8359 default:
8360 not_escape:
8361 temp = (char *)xmalloc (3);
8362 temp[0] = '\\';
8363 temp[1] = c;
8364 temp[2] = '\0';
8365
8366 add_string:
8367 if (c)
8368 string++;
8369 result =
8370 sub_append_string (temp, result, &result_index, &result_size);
8371 temp = (char *)NULL; /* Freed in sub_append_string (). */
8372 result[result_index] = '\0';
8373 break;
8374 }
8375 }
8376 else
8377 {
8378 RESIZE_MALLOCED_BUFFER (result, result_index, 3, result_size, PROMPT_GROWTH);
8379 /* dequote_string should take care of removing this if we are not
8380 performing the rest of the word expansions. */
8381 if (c == CTLESC || c == CTLNUL)
8382 result[result_index++] = CTLESC;
8383 result[result_index++] = c;
8384 result[result_index] = '\0';
8385 }
8386 }
8387 #else /* !PROMPT_STRING_DECODE */
8388 result = savestring (string);
8389 #endif /* !PROMPT_STRING_DECODE */
8390
8391 /* Save the delimiter stack and point `dstack' to temp space so any
8392 command substitutions in the prompt string won't result in screwing
8393 up the parser's quoting state. */
8394 save_dstack = dstack;
8395 dstack = temp_dstack;
8396 dstack.delimiter_depth = 0;
8397
8398 /* Perform variable and parameter expansion and command substitution on
8399 the prompt string. */
8400 if (promptvars || posixly_correct)
8401 {
8402 last_exit_value = last_command_exit_value;
8403 last_comsub_pid = last_command_subst_pid;
8404 list = expand_prompt_string (result, Q_DOUBLE_QUOTES, 0);
8405 free (result);
8406 result = string_list (list);
8407 dispose_words (list);
8408 last_command_exit_value = last_exit_value;
8409 last_command_subst_pid = last_comsub_pid;
8410 }
8411 else
8412 {
8413 t = dequote_string (result);
8414 free (result);
8415 result = t;
8416 }
8417
8418 dstack = save_dstack;
8419
8420 return (result);
8421 }
8422
8423 /************************************************
8424 * *
8425 * ERROR HANDLING *
8426 * *
8427 ************************************************/
8428
8429 /* Report a syntax error, and restart the parser. Call here for fatal
8430 errors. */
8431 int
8432 yyerror (msg)
8433 const char *msg;
8434 {
8435 report_syntax_error ((char *)NULL);
8436 reset_parser ();
8437 return (0);
8438 }
8439
8440 static char *
8441 error_token_from_token (tok)
8442 int tok;
8443 {
8444 char *t;
8445
8446 if (t = find_token_in_alist (tok, word_token_alist, 0))
8447 return t;
8448
8449 if (t = find_token_in_alist (tok, other_token_alist, 0))
8450 return t;
8451
8452 t = (char *)NULL;
8453 /* This stuff is dicy and needs closer inspection */
8454 switch (current_token)
8455 {
8456 case WORD:
8457 case ASSIGNMENT_WORD:
8458 if (yylval.word)
8459 t = savestring (yylval.word->word);
8460 break;
8461 case NUMBER:
8462 t = itos (yylval.number);
8463 break;
8464 case ARITH_CMD:
8465 if (yylval.word_list)
8466 t = string_list (yylval.word_list);
8467 break;
8468 case ARITH_FOR_EXPRS:
8469 if (yylval.word_list)
8470 t = string_list_internal (yylval.word_list, " ; ");
8471 break;
8472 case COND_CMD:
8473 t = (char *)NULL; /* punt */
8474 break;
8475 }
8476
8477 return t;
8478 }
8479
8480 static char *
8481 error_token_from_text ()
8482 {
8483 char *msg, *t;
8484 int token_end, i;
8485
8486 t = shell_input_line;
8487 i = shell_input_line_index;
8488 token_end = 0;
8489 msg = (char *)NULL;
8490
8491 if (i && t[i] == '\0')
8492 i--;
8493
8494 while (i && (whitespace (t[i]) || t[i] == '\n'))
8495 i--;
8496
8497 if (i)
8498 token_end = i + 1;
8499
8500 while (i && (member (t[i], " \n\t;|&") == 0))
8501 i--;
8502
8503 while (i != token_end && (whitespace (t[i]) || t[i] == '\n'))
8504 i++;
8505
8506 /* Return our idea of the offending token. */
8507 if (token_end || (i == 0 && token_end == 0))
8508 {
8509 if (token_end)
8510 msg = substring (t, i, token_end);
8511 else /* one-character token */
8512 {
8513 msg = (char *)xmalloc (2);
8514 msg[0] = t[i];
8515 msg[1] = '\0';
8516 }
8517 }
8518
8519 return (msg);
8520 }
8521
8522 static void
8523 print_offending_line ()
8524 {
8525 char *msg;
8526 int token_end;
8527
8528 msg = savestring (shell_input_line);
8529 token_end = strlen (msg);
8530 while (token_end && msg[token_end - 1] == '\n')
8531 msg[--token_end] = '\0';
8532
8533 parser_error (line_number, "`%s'", msg);
8534 free (msg);
8535 }
8536
8537 /* Report a syntax error with line numbers, etc.
8538 Call here for recoverable errors. If you have a message to print,
8539 then place it in MESSAGE, otherwise pass NULL and this will figure
8540 out an appropriate message for you. */
8541 static void
8542 report_syntax_error (message)
8543 char *message;
8544 {
8545 char *msg, *p;
8546
8547 if (message)
8548 {
8549 parser_error (line_number, "%s", message);
8550 if (interactive && EOF_Reached)
8551 EOF_Reached = 0;
8552 last_command_exit_value = parse_and_execute_level ? EX_BADSYNTAX : EX_BADUSAGE;
8553 return;
8554 }
8555
8556 /* If the line of input we're reading is not null, try to find the
8557 objectionable token. First, try to figure out what token the
8558 parser's complaining about by looking at current_token. */
8559 if (current_token != 0 && EOF_Reached == 0 && (msg = error_token_from_token (current_token)))
8560 {
8561 if (ansic_shouldquote (msg))
8562 {
8563 p = ansic_quote (msg, 0, NULL);
8564 free (msg);
8565 msg = p;
8566 }
8567 parser_error (line_number, _("syntax error near unexpected token `%s'"), msg);
8568 free (msg);
8569
8570 if (interactive == 0)
8571 print_offending_line ();
8572
8573 last_command_exit_value = parse_and_execute_level ? EX_BADSYNTAX : EX_BADUSAGE;
8574 return;
8575 }
8576
8577 /* If looking at the current token doesn't prove fruitful, try to find the
8578 offending token by analyzing the text of the input line near the current
8579 input line index and report what we find. */
8580 if (shell_input_line && *shell_input_line)
8581 {
8582 msg = error_token_from_text ();
8583 if (msg)
8584 {
8585 parser_error (line_number, _("syntax error near `%s'"), msg);
8586 free (msg);
8587 }
8588
8589 /* If not interactive, print the line containing the error. */
8590 if (interactive == 0)
8591 print_offending_line ();
8592 }
8593 else
8594 {
8595 msg = EOF_Reached ? _("syntax error: unexpected end of file") : _("syntax error");
8596 parser_error (line_number, "%s", msg);
8597 /* When the shell is interactive, this file uses EOF_Reached
8598 only for error reporting. Other mechanisms are used to
8599 decide whether or not to exit. */
8600 if (interactive && EOF_Reached)
8601 EOF_Reached = 0;
8602 }
8603
8604 last_command_exit_value = parse_and_execute_level ? EX_BADSYNTAX : EX_BADUSAGE;
8605 }
8606
8607 /* ??? Needed function. ??? We have to be able to discard the constructs
8608 created during parsing. In the case of error, we want to return
8609 allocated objects to the memory pool. In the case of no error, we want
8610 to throw away the information about where the allocated objects live.
8611 (dispose_command () will actually free the command.) */
8612 static void
8613 discard_parser_constructs (error_p)
8614 int error_p;
8615 {
8616 }
8617
8618 /************************************************
8619 * *
8620 * EOF HANDLING *
8621 * *
8622 ************************************************/
8623
8624 /* Do that silly `type "bye" to exit' stuff. You know, "ignoreeof". */
8625
8626 /* A flag denoting whether or not ignoreeof is set. */
8627 int ignoreeof = 0;
8628
8629 /* The number of times that we have encountered an EOF character without
8630 another character intervening. When this gets above the limit, the
8631 shell terminates. */
8632 int eof_encountered = 0;
8633
8634 /* The limit for eof_encountered. */
8635 int eof_encountered_limit = 10;
8636
8637 /* If we have EOF as the only input unit, this user wants to leave
8638 the shell. If the shell is not interactive, then just leave.
8639 Otherwise, if ignoreeof is set, and we haven't done this the
8640 required number of times in a row, print a message. */
8641 static void
8642 handle_eof_input_unit ()
8643 {
8644 if (interactive)
8645 {
8646 /* shell.c may use this to decide whether or not to write out the
8647 history, among other things. We use it only for error reporting
8648 in this file. */
8649 if (EOF_Reached)
8650 EOF_Reached = 0;
8651
8652 /* If the user wants to "ignore" eof, then let her do so, kind of. */
8653 if (ignoreeof)
8654 {
8655 if (eof_encountered < eof_encountered_limit)
8656 {
8657 fprintf (stderr, _("Use \"%s\" to leave the shell.\n"),
8658 login_shell ? "logout" : "exit");
8659 eof_encountered++;
8660 /* Reset the parsing state. */
8661 last_read_token = current_token = '\n';
8662 /* Reset the prompt string to be $PS1. */
8663 prompt_string_pointer = (char **)NULL;
8664 prompt_again ();
8665 return;
8666 }
8667 }
8668
8669 /* In this case EOF should exit the shell. Do it now. */
8670 reset_parser ();
8671 exit_builtin ((WORD_LIST *)NULL);
8672 }
8673 else
8674 {
8675 /* We don't write history files, etc., for non-interactive shells. */
8676 EOF_Reached = 1;
8677 }
8678 }
8679
8680 /************************************************
8681 * *
8682 * STRING PARSING FUNCTIONS *
8683 * *
8684 ************************************************/
8685
8686 /* It's very important that these two functions treat the characters
8687 between ( and ) identically. */
8688
8689 static WORD_LIST parse_string_error;
8690
8691 /* Take a string and run it through the shell parser, returning the
8692 resultant word list. Used by compound array assignment. */
8693 WORD_LIST *
8694 parse_string_to_word_list (s, flags, whom)
8695 char *s;
8696 int flags;
8697 const char *whom;
8698 {
8699 WORD_LIST *wl;
8700 int tok, orig_current_token, orig_line_number, orig_input_terminator;
8701 int orig_line_count;
8702 int old_echo_input, old_expand_aliases;
8703 #if defined (HISTORY)
8704 int old_remember_on_history, old_history_expansion_inhibited;
8705 #endif
8706
8707 #if defined (HISTORY)
8708 old_remember_on_history = remember_on_history;
8709 # if defined (BANG_HISTORY)
8710 old_history_expansion_inhibited = history_expansion_inhibited;
8711 # endif
8712 bash_history_disable ();
8713 #endif
8714
8715 orig_line_number = line_number;
8716 orig_line_count = current_command_line_count;
8717 orig_input_terminator = shell_input_line_terminator;
8718 old_echo_input = echo_input_at_read;
8719 old_expand_aliases = expand_aliases;
8720
8721 push_stream (1);
8722 last_read_token = WORD; /* WORD to allow reserved words here */
8723 current_command_line_count = 0;
8724 echo_input_at_read = expand_aliases = 0;
8725
8726 with_input_from_string (s, whom);
8727 wl = (WORD_LIST *)NULL;
8728
8729 if (flags & 1)
8730 parser_state |= PST_COMPASSIGN|PST_REPARSE;
8731
8732 while ((tok = read_token (READ)) != yacc_EOF)
8733 {
8734 if (tok == '\n' && *bash_input.location.string == '\0')
8735 break;
8736 if (tok == '\n') /* Allow newlines in compound assignments */
8737 continue;
8738 if (tok != WORD && tok != ASSIGNMENT_WORD)
8739 {
8740 line_number = orig_line_number + line_number - 1;
8741 orig_current_token = current_token;
8742 current_token = tok;
8743 yyerror (NULL); /* does the right thing */
8744 current_token = orig_current_token;
8745 if (wl)
8746 dispose_words (wl);
8747 wl = &parse_string_error;
8748 break;
8749 }
8750 wl = make_word_list (yylval.word, wl);
8751 }
8752
8753 last_read_token = '\n';
8754 pop_stream ();
8755
8756 #if defined (HISTORY)
8757 remember_on_history = old_remember_on_history;
8758 # if defined (BANG_HISTORY)
8759 history_expansion_inhibited = old_history_expansion_inhibited;
8760 # endif /* BANG_HISTORY */
8761 #endif /* HISTORY */
8762
8763 echo_input_at_read = old_echo_input;
8764 expand_aliases = old_expand_aliases;
8765
8766 current_command_line_count = orig_line_count;
8767 shell_input_line_terminator = orig_input_terminator;
8768
8769 if (flags & 1)
8770 parser_state &= ~(PST_COMPASSIGN|PST_REPARSE);
8771
8772 if (wl == &parse_string_error)
8773 {
8774 last_command_exit_value = EXECUTION_FAILURE;
8775 if (interactive_shell == 0 && posixly_correct)
8776 jump_to_top_level (FORCE_EOF);
8777 else
8778 jump_to_top_level (DISCARD);
8779 }
8780
8781 return (REVERSE_LIST (wl, WORD_LIST *));
8782 }
8783
8784 static char *
8785 parse_compound_assignment (retlenp)
8786 int *retlenp;
8787 {
8788 WORD_LIST *wl, *rl;
8789 int tok, orig_line_number, orig_token_size, orig_last_token, assignok;
8790 char *saved_token, *ret;
8791
8792 saved_token = token;
8793 orig_token_size = token_buffer_size;
8794 orig_line_number = line_number;
8795 orig_last_token = last_read_token;
8796
8797 last_read_token = WORD; /* WORD to allow reserved words here */
8798
8799 token = (char *)NULL;
8800 token_buffer_size = 0;
8801
8802 assignok = parser_state&PST_ASSIGNOK; /* XXX */
8803
8804 wl = (WORD_LIST *)NULL; /* ( */
8805 parser_state |= PST_COMPASSIGN;
8806
8807 while ((tok = read_token (READ)) != ')')
8808 {
8809 if (tok == '\n') /* Allow newlines in compound assignments */
8810 {
8811 if (SHOULD_PROMPT ())
8812 prompt_again ();
8813 continue;
8814 }
8815 if (tok != WORD && tok != ASSIGNMENT_WORD)
8816 {
8817 current_token = tok; /* for error reporting */
8818 if (tok == yacc_EOF) /* ( */
8819 parser_error (orig_line_number, _("unexpected EOF while looking for matching `)'"));
8820 else
8821 yyerror(NULL); /* does the right thing */
8822 if (wl)
8823 dispose_words (wl);
8824 wl = &parse_string_error;
8825 break;
8826 }
8827 wl = make_word_list (yylval.word, wl);
8828 }
8829
8830 FREE (token);
8831 token = saved_token;
8832 token_buffer_size = orig_token_size;
8833
8834 parser_state &= ~PST_COMPASSIGN;
8835
8836 if (wl == &parse_string_error)
8837 {
8838 last_command_exit_value = EXECUTION_FAILURE;
8839 last_read_token = '\n'; /* XXX */
8840 if (interactive_shell == 0 && posixly_correct)
8841 jump_to_top_level (FORCE_EOF);
8842 else
8843 jump_to_top_level (DISCARD);
8844 }
8845
8846 last_read_token = orig_last_token; /* XXX - was WORD? */
8847
8848 if (wl)
8849 {
8850 rl = REVERSE_LIST (wl, WORD_LIST *);
8851 ret = string_list (rl);
8852 dispose_words (rl);
8853 }
8854 else
8855 ret = (char *)NULL;
8856
8857 if (retlenp)
8858 *retlenp = (ret && *ret) ? strlen (ret) : 0;
8859
8860 if (assignok)
8861 parser_state |= PST_ASSIGNOK;
8862
8863 return ret;
8864 }
8865
8866 /************************************************
8867 * *
8868 * SAVING AND RESTORING PARTIAL PARSE STATE *
8869 * *
8870 ************************************************/
8871
8872 sh_parser_state_t *
8873 save_parser_state (ps)
8874 sh_parser_state_t *ps;
8875 {
8876 if (ps == 0)
8877 ps = (sh_parser_state_t *)xmalloc (sizeof (sh_parser_state_t));
8878 if (ps == 0)
8879 return ((sh_parser_state_t *)NULL);
8880
8881 ps->parser_state = parser_state;
8882 ps->token_state = save_token_state ();
8883
8884 ps->input_line_terminator = shell_input_line_terminator;
8885 ps->eof_encountered = eof_encountered;
8886
8887 ps->prompt_string_pointer = prompt_string_pointer;
8888
8889 ps->current_command_line_count = current_command_line_count;
8890
8891 #if defined (HISTORY)
8892 ps->remember_on_history = remember_on_history;
8893 # if defined (BANG_HISTORY)
8894 ps->history_expansion_inhibited = history_expansion_inhibited;
8895 # endif
8896 #endif
8897
8898 ps->last_command_exit_value = last_command_exit_value;
8899 #if defined (ARRAY_VARS)
8900 ps->pipestatus = save_pipestatus_array ();
8901 #endif
8902
8903 ps->last_shell_builtin = last_shell_builtin;
8904 ps->this_shell_builtin = this_shell_builtin;
8905
8906 ps->expand_aliases = expand_aliases;
8907 ps->echo_input_at_read = echo_input_at_read;
8908 ps->need_here_doc = need_here_doc;
8909 ps->here_doc_first_line = here_doc_first_line;
8910
8911 if (need_here_doc == 0)
8912 ps->redir_stack[0] = 0;
8913 else
8914 memcpy (ps->redir_stack, redir_stack, sizeof (redir_stack[0]) * HEREDOC_MAX);
8915
8916 ps->token = token;
8917 ps->token_buffer_size = token_buffer_size;
8918 /* Force reallocation on next call to read_token_word */
8919 token = 0;
8920 token_buffer_size = 0;
8921
8922 return (ps);
8923 }
8924
8925 void
8926 restore_parser_state (ps)
8927 sh_parser_state_t *ps;
8928 {
8929 int i;
8930
8931 if (ps == 0)
8932 return;
8933
8934 parser_state = ps->parser_state;
8935 if (ps->token_state)
8936 {
8937 restore_token_state (ps->token_state);
8938 free (ps->token_state);
8939 }
8940
8941 shell_input_line_terminator = ps->input_line_terminator;
8942 eof_encountered = ps->eof_encountered;
8943
8944 prompt_string_pointer = ps->prompt_string_pointer;
8945
8946 current_command_line_count = ps->current_command_line_count;
8947
8948 #if defined (HISTORY)
8949 remember_on_history = ps->remember_on_history;
8950 # if defined (BANG_HISTORY)
8951 history_expansion_inhibited = ps->history_expansion_inhibited;
8952 # endif
8953 #endif
8954
8955 last_command_exit_value = ps->last_command_exit_value;
8956 #if defined (ARRAY_VARS)
8957 restore_pipestatus_array (ps->pipestatus);
8958 #endif
8959
8960 last_shell_builtin = ps->last_shell_builtin;
8961 this_shell_builtin = ps->this_shell_builtin;
8962
8963 expand_aliases = ps->expand_aliases;
8964 echo_input_at_read = ps->echo_input_at_read;
8965 need_here_doc = ps->need_here_doc;
8966 here_doc_first_line = ps->here_doc_first_line;
8967
8968 #if 0
8969 for (i = 0; i < HEREDOC_MAX; i++)
8970 redir_stack[i] = ps->redir_stack[i];
8971 #else
8972 if (need_here_doc == 0)
8973 redir_stack[0] = 0;
8974 else
8975 memcpy (redir_stack, ps->redir_stack, sizeof (redir_stack[0]) * HEREDOC_MAX);
8976 #endif
8977
8978 FREE (token);
8979 token = ps->token;
8980 token_buffer_size = ps->token_buffer_size;
8981 }
8982
8983 sh_input_line_state_t *
8984 save_input_line_state (ls)
8985 sh_input_line_state_t *ls;
8986 {
8987 if (ls == 0)
8988 ls = (sh_input_line_state_t *)xmalloc (sizeof (sh_input_line_state_t));
8989 if (ls == 0)
8990 return ((sh_input_line_state_t *)NULL);
8991
8992 ls->input_line = shell_input_line;
8993 ls->input_line_size = shell_input_line_size;
8994 ls->input_line_len = shell_input_line_len;
8995 ls->input_line_index = shell_input_line_index;
8996
8997 /* force reallocation */
8998 shell_input_line = 0;
8999 shell_input_line_size = shell_input_line_len = shell_input_line_index = 0;
9000
9001 return ls;
9002 }
9003
9004 void
9005 restore_input_line_state (ls)
9006 sh_input_line_state_t *ls;
9007 {
9008 FREE (shell_input_line);
9009 shell_input_line = ls->input_line;
9010 shell_input_line_size = ls->input_line_size;
9011 shell_input_line_len = ls->input_line_len;
9012 shell_input_line_index = ls->input_line_index;
9013
9014 set_line_mbstate ();
9015 }
9016
9017 /************************************************
9018 * *
9019 * MULTIBYTE CHARACTER HANDLING *
9020 * *
9021 ************************************************/
9022
9023 #if defined (HANDLE_MULTIBYTE)
9024
9025 /* We don't let the property buffer get larger than this unless the line is */
9026 #define MAX_PROPSIZE 32768
9027
9028 static void
9029 set_line_mbstate ()
9030 {
9031 int c;
9032 size_t i, previ, len;
9033 mbstate_t mbs, prevs;
9034 size_t mbclen;
9035
9036 if (shell_input_line == NULL)
9037 return;
9038 len = strlen (shell_input_line); /* XXX - shell_input_line_len ? */
9039 if (len == 0)
9040 return;
9041 if (shell_input_line_propsize >= MAX_PROPSIZE && len < MAX_PROPSIZE>>1)
9042 {
9043 free (shell_input_line_property);
9044 shell_input_line_property = 0;
9045 shell_input_line_propsize = 0;
9046 }
9047 if (len+1 > shell_input_line_propsize)
9048 {
9049 shell_input_line_propsize = len + 1;
9050 shell_input_line_property = (char *)xrealloc (shell_input_line_property, shell_input_line_propsize);
9051 }
9052
9053 /* XXX - use whether or not we are in a UTF-8 locale to avoid calls to
9054 mbrlen */
9055 memset (&prevs, '\0', sizeof (mbstate_t));
9056 for (i = previ = 0; i < len; i++)
9057 {
9058 mbs = prevs;
9059
9060 c = shell_input_line[i];
9061 if (c == EOF)
9062 {
9063 size_t j;
9064 for (j = i; j < len; j++)
9065 shell_input_line_property[j] = 1;
9066 break;
9067 }
9068
9069 /* I'd love to take more advantage of UTF-8's properties in a UTF-8
9070 locale, but mbrlen changes the mbstate_t on every call even when
9071 presented with single-byte characters. */
9072 mbclen = mbrlen (shell_input_line + previ, i - previ + 1, &mbs);
9073 if (mbclen == 1 || mbclen == (size_t)-1)
9074 {
9075 mbclen = 1;
9076 previ = i + 1;
9077 }
9078 else if (mbclen == (size_t)-2)
9079 mbclen = 0;
9080 else if (mbclen > 1)
9081 {
9082 mbclen = 0;
9083 previ = i + 1;
9084 prevs = mbs;
9085 }
9086 else
9087 {
9088 /* XXX - what to do if mbrlen returns 0? (null wide character) */
9089 size_t j;
9090 for (j = i; j < len; j++)
9091 shell_input_line_property[j] = 1;
9092 break;
9093 }
9094
9095 shell_input_line_property[i] = mbclen;
9096 }
9097 }
9098 #endif /* HANDLE_MULTIBYTE */
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