1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
|
/* Header file for command creation.
Copyright (C) 1986-2023 Free Software Foundation, Inc.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
#if !defined (COMMAND_H)
#define COMMAND_H 1
#include "gdbsupport/gdb_vecs.h"
#include "gdbsupport/scoped_restore.h"
struct completion_tracker;
/* This file defines the public interface for any code wanting to
create commands. */
/* Command classes are top-level categories into which commands are
broken down for "help" purposes.
The class_alias is used for the user-defined aliases, defined
using the "alias" command.
Aliases pre-defined by GDB (e.g. the alias "bt" of the "backtrace" command)
are not using the class_alias.
Different pre-defined aliases of the same command do not necessarily
have the same classes. For example, class_stack is used for the
"backtrace" and its "bt" alias", while "info stack" (also an alias
of "backtrace" uses class_info. */
enum command_class
{
/* Classes of commands followed by a comment giving the name
to use in "help <classname>".
Note that help accepts unambiguous abbreviated class names. */
/* Special classes to help_list */
all_classes = -2, /* help without <classname> */
all_commands = -1, /* all */
/* Classes of commands */
no_class = -1,
class_run = 0, /* running */
class_vars, /* data */
class_stack, /* stack */
class_files, /* files */
class_support, /* support */
class_info, /* status */
class_breakpoint, /* breakpoints */
class_trace, /* tracepoints */
class_alias, /* aliases */
class_bookmark,
class_obscure, /* obscure */
class_maintenance, /* internals */
class_tui, /* text-user-interface */
class_user, /* user-defined */
/* Used for "show" commands that have no corresponding "set" command. */
no_set_class
};
/* Types of "set" or "show" command. */
enum var_types
{
/* "on" or "off". *VAR is a bool which is true for on,
false for off. */
var_boolean,
/* "on" / "true" / "enable" or "off" / "false" / "disable" or
"auto. *VAR is an ``enum auto_boolean''. NOTE: In general a
custom show command will need to be implemented - one that for
"auto" prints both the "auto" and the current auto-selected
value. */
var_auto_boolean,
/* Unsigned Integer. *VAR is an unsigned int. In the Guile and Python
APIs 0 means unlimited, which is stored in *VAR as UINT_MAX. */
var_uinteger,
/* Like var_uinteger but signed. *VAR is an int. In the Guile and
Python APIs 0 means unlimited, which is stored in *VAR as INT_MAX. */
var_integer,
/* Like var_integer but negative numbers are not allowed,
except for special values. *VAR is an int. */
var_pinteger,
/* String which the user enters with escapes (e.g. the user types
\n and it is a real newline in the stored string).
*VAR is a std::string, "" if the string is empty. */
var_string,
/* String which stores what the user types verbatim.
*VAR is std::string, "" if the string is empty. */
var_string_noescape,
/* String which stores a filename. (*VAR) is a std::string,
"" if the string was empty. */
var_optional_filename,
/* String which stores a filename. (*VAR) is a std::string. */
var_filename,
/* Enumerated type. Can only have one of the specified values.
*VAR is a char pointer to the name of the element that we
find. */
var_enum
};
/* A structure describing an extra literal accepted and shown in place
of a number. */
struct literal_def
{
/* The literal to define, e.g. "unlimited". */
const char *literal;
/* The number to substitute internally for LITERAL or VAL;
the use of this number is not allowed (unless the same as VAL). */
LONGEST use;
/* An optional number accepted that stands for the literal. */
std::optional<LONGEST> val;
};
/* Return true if a setting of type VAR_TYPE is backed with type T.
This function is left without definition intentionally. This template is
specialized for all valid types that are used to back var_types. Therefore
if one tries to instantiate this un-specialized template it means the T
parameter is not a type used to back a var_type and it is most likely a
programming error. */
template<typename T>
bool var_type_uses (var_types var_type) = delete;
/* Return true if a setting of type T is backed by a bool variable. */
template<>
inline bool var_type_uses<bool> (var_types t)
{
return t == var_boolean;
};
/* Return true if a setting of type T is backed by a auto_boolean variable.
*/
template<>
inline bool var_type_uses<enum auto_boolean> (var_types t)
{
return t == var_auto_boolean;
}
/* Return true if a setting of type T is backed by an unsigned int variable.
*/
template<>
inline bool var_type_uses<unsigned int> (var_types t)
{
return t == var_uinteger;
}
/* Return true if a setting of type T is backed by an int variable. */
template<>
inline bool var_type_uses<int> (var_types t)
{
return t == var_integer || t == var_pinteger;
}
/* Return true if a setting of type T is backed by a std::string variable. */
template<>
inline bool var_type_uses<std::string> (var_types t)
{
return (t == var_string || t == var_string_noescape
|| t == var_optional_filename || t == var_filename);
}
/* Return true if a setting of type T is backed by a const char * variable.
*/
template<>
inline bool var_type_uses<const char *> (var_types t)
{
return t == var_enum;
}
template<bool is_scalar, typename T> struct setting_func_types_1;
template<typename T>
struct setting_func_types_1<true, T>
{
using type = T;
using set = void (*) (type);
using get = type (*) ();
};
template<typename T>
struct setting_func_types_1<false, T>
{
using type = const T &;
using set = void (*) (type);
using get = type (*) ();
};
template<typename T>
struct setting_func_types
{
using type = typename setting_func_types_1<std::is_scalar<T>::value, T>::type;
using set = typename setting_func_types_1<std::is_scalar<T>::value, T>::set;
using get = typename setting_func_types_1<std::is_scalar<T>::value, T>::get;
};
/* Generic/type-erased function pointer. */
using erased_func = void (*) ();
/* Interface for getting and setting a setting's value.
The underlying data can be of any VAR_TYPES type. */
struct setting
{
/* Create a setting backed by a variable of type T.
Type T must match the var type VAR_TYPE (see VAR_TYPE_USES). */
template<typename T>
setting (var_types var_type, T *var,
const literal_def *extra_literals = nullptr)
: m_var_type (var_type), m_var (var), m_extra_literals (extra_literals)
{
gdb_assert (var != nullptr);
gdb_assert (var_type_uses<T> (var_type));
}
/* A setting can also be constructed with a pre-validated
type-erased variable. Use the following function to
validate & type-erase said variable/function pointers. */
struct erased_args
{
void *var;
erased_func setter;
erased_func getter;
};
template<typename T>
static erased_args erase_args (var_types var_type,
T *var,
typename setting_func_types<T>::set set_setting_func,
typename setting_func_types<T>::get get_setting_func)
{
gdb_assert (var_type_uses<T> (var_type));
/* The getter and the setter must be both provided or both omitted. */
gdb_assert
((set_setting_func == nullptr) == (get_setting_func == nullptr));
/* The caller must provide a pointer to a variable or get/set functions, but
not both. */
gdb_assert ((set_setting_func == nullptr) != (var == nullptr));
return {
var,
reinterpret_cast<erased_func> (set_setting_func),
reinterpret_cast<erased_func> (get_setting_func)
};
}
/* Create a setting backed by pre-validated type-erased args and using
EXTRA_LITERALS. ERASED_VAR's fields' real types must match the var
type VAR_TYPE (see VAR_TYPE_USES). */
setting (var_types var_type, const literal_def *extra_literals,
const erased_args &args)
: m_var_type (var_type),
m_var (args.var),
m_extra_literals (extra_literals),
m_getter (args.getter),
m_setter (args.setter)
{
}
/* Create a setting backed by setter and getter functions.
Type T must match the var type VAR_TYPE (see VAR_TYPE_USES). */
template<typename T>
setting (var_types var_type,
typename setting_func_types<T>::set setter,
typename setting_func_types<T>::get getter)
: m_var_type (var_type)
{
gdb_assert (var_type_uses<T> (var_type));
/* Getters and setters are cast to and from the arbitrary `void (*) ()`
function pointer type. Make sure that the two types are really of the
same size. */
static_assert (sizeof (m_getter) == sizeof (getter));
static_assert (sizeof (m_setter) == sizeof (setter));
m_getter = reinterpret_cast<erased_func> (getter);
m_setter = reinterpret_cast<erased_func> (setter);
}
/* Access the type of the current setting. */
var_types type () const
{ return m_var_type; }
/* Access any extra literals accepted. */
const literal_def *extra_literals () const
{ return m_extra_literals; }
/* Return the current value.
The template parameter T is the type of the variable used to store the
setting. */
template<typename T>
typename setting_func_types<T>::type get () const
{
gdb_assert (var_type_uses<T> (m_var_type));
if (m_var == nullptr)
{
gdb_assert (m_getter != nullptr);
auto getter = reinterpret_cast<typename setting_func_types<T>::get> (m_getter);
return getter ();
}
else
return *static_cast<const T *> (m_var);
}
/* Sets the value of the setting to V. Returns true if the setting was
effectively changed, false if the update failed and the setting is left
unchanged.
If we have a user-provided setter, use it to set the setting. Otherwise
copy the value V to the internally referenced buffer.
The template parameter T indicates the type of the variable used to store
the setting.
The var_type of the setting must match T. */
template<typename T>
bool set (const T &v)
{
/* Check that the current instance is of one of the supported types for
this instantiation. */
gdb_assert (var_type_uses<T> (m_var_type));
const T old_value = this->get<T> ();
if (m_var == nullptr)
{
gdb_assert (m_setter != nullptr);
auto setter = reinterpret_cast<typename setting_func_types<T>::set> (m_setter);
setter (v);
}
else
*static_cast<T *> (m_var) = v;
return old_value != this->get<T> ();
}
private:
/* The type of the variable M_VAR is pointing to, or that M_GETTER / M_SETTER
get or set. */
var_types m_var_type;
/* Pointer to the enclosed variable
Either M_VAR is non-nullptr, or both M_GETTER and M_SETTER are
non-nullptr. */
void *m_var = nullptr;
/* Any extra literals accepted. */
const literal_def *m_extra_literals = nullptr;
/* Pointer to a user provided getter. */
erased_func m_getter = nullptr;
/* Pointer to a user provided setter. */
erased_func m_setter = nullptr;
};
/* This structure records one command'd definition. */
struct cmd_list_element;
/* The "simple" signature of command callbacks, which doesn't include a
cmd_list_element parameter. */
typedef void cmd_simple_func_ftype (const char *args, int from_tty);
/* This structure specifies notifications to be suppressed by a cli
command interpreter. */
struct cli_suppress_notification
{
/* Inferior, thread, frame selected notification suppressed? */
bool user_selected_context = false;
/* Normal stop event suppressed? */
bool normal_stop = false;
};
extern struct cli_suppress_notification cli_suppress_notification;
/* Forward-declarations of the entry-points of cli/cli-decode.c. */
/* API to the manipulation of command lists. */
/* Return TRUE if NAME is a valid user-defined command name.
This is a stricter subset of all gdb commands,
see find_command_name_length. */
extern bool valid_user_defined_cmd_name_p (const char *name);
/* Return TRUE if C is a valid command character. */
extern bool valid_cmd_char_p (int c);
/* Return value type for the add_setshow_* functions. */
struct set_show_commands
{
cmd_list_element *set, *show;
};
/* Const-correct variant of the above. */
extern struct cmd_list_element *add_cmd (const char *, enum command_class,
cmd_simple_func_ftype *fun,
const char *,
struct cmd_list_element **);
/* Like add_cmd, but no command function is specified. */
extern struct cmd_list_element *add_cmd (const char *, enum command_class,
const char *,
struct cmd_list_element **);
extern struct cmd_list_element *add_cmd_suppress_notification
(const char *name, enum command_class theclass,
cmd_simple_func_ftype *fun, const char *doc,
struct cmd_list_element **list,
bool *suppress_notification);
extern struct cmd_list_element *add_alias_cmd (const char *,
cmd_list_element *,
enum command_class, int,
struct cmd_list_element **);
extern struct cmd_list_element *add_prefix_cmd (const char *, enum command_class,
cmd_simple_func_ftype *fun,
const char *,
struct cmd_list_element **,
int,
struct cmd_list_element **);
/* Like add_prefix_cmd, but sets the callback to a function that
simply calls help_list. */
extern struct cmd_list_element *add_basic_prefix_cmd
(const char *, enum command_class, const char *, struct cmd_list_element **,
int, struct cmd_list_element **);
/* Like add_prefix_cmd, but useful for "show" prefixes. This sets the
callback to a function that simply calls cmd_show_list. */
extern struct cmd_list_element *add_show_prefix_cmd
(const char *, enum command_class, const char *, struct cmd_list_element **,
int, struct cmd_list_element **);
/* Add matching set and show commands using add_basic_prefix_cmd and
add_show_prefix_cmd. */
extern set_show_commands add_setshow_prefix_cmd
(const char *name, command_class theclass, const char *set_doc,
const char *show_doc,
cmd_list_element **set_subcommands_list,
cmd_list_element **show_subcommands_list,
cmd_list_element **set_list,
cmd_list_element **show_list);
extern struct cmd_list_element *add_prefix_cmd_suppress_notification
(const char *name, enum command_class theclass,
cmd_simple_func_ftype *fun,
const char *doc, struct cmd_list_element **subcommands,
int allow_unknown,
struct cmd_list_element **list,
bool *suppress_notification);
extern struct cmd_list_element *add_abbrev_prefix_cmd (const char *,
enum command_class,
cmd_simple_func_ftype *fun,
const char *,
struct cmd_list_element
**, int,
struct cmd_list_element
**);
typedef void cmd_func_ftype (const char *args, int from_tty,
cmd_list_element *c);
/* A completion routine. Add possible completions to tracker.
TEXT is the text beyond what was matched for the command itself
(leading whitespace is skipped). It stops where we are supposed to
stop completing (rl_point) and is '\0' terminated. WORD points in
the same buffer as TEXT, and completions should be returned
relative to this position. For example, suppose TEXT is "foo" and
we want to complete to "foobar". If WORD is "oo", return "oobar";
if WORD is "baz/foo", return "baz/foobar". */
typedef void completer_ftype (struct cmd_list_element *,
completion_tracker &tracker,
const char *text, const char *word);
/* Same, but for set_cmd_completer_handle_brkchars. */
typedef void completer_handle_brkchars_ftype (struct cmd_list_element *,
completion_tracker &tracker,
const char *text, const char *word);
extern void set_cmd_completer (struct cmd_list_element *, completer_ftype *);
/* Set the completer_handle_brkchars callback. */
extern void set_cmd_completer_handle_brkchars (struct cmd_list_element *,
completer_handle_brkchars_ftype *);
/* HACK: cagney/2002-02-23: Code, mostly in tracepoints.c, grubs
around in cmd objects to test the value of the commands sfunc(). */
extern int cmd_simple_func_eq (struct cmd_list_element *cmd,
cmd_simple_func_ftype *cfun);
/* Execute CMD's pre/post hook. Throw an error if the command fails.
If already executing this pre/post hook, or there is no pre/post
hook, the call is silently ignored. */
extern void execute_cmd_pre_hook (struct cmd_list_element *cmd);
extern void execute_cmd_post_hook (struct cmd_list_element *cmd);
/* Flag for an ambiguous cmd_list result. */
#define CMD_LIST_AMBIGUOUS ((struct cmd_list_element *) -1)
extern struct cmd_list_element *lookup_cmd (const char **,
struct cmd_list_element *,
const char *,
std::string *,
int, int);
/* This routine takes a line of TEXT and a CLIST in which to start the
lookup. When it returns it will have incremented the text pointer past
the section of text it matched, set *RESULT_LIST to point to the list in
which the last word was matched, and will return a pointer to the cmd
list element which the text matches. It will return NULL if no match at
all was possible. It will return -1 (cast appropriately, ick) if ambigous
matches are possible; in this case *RESULT_LIST will be set to point to
the list in which there are ambiguous choices (and *TEXT will be set to
the ambiguous text string).
if DEFAULT_ARGS is not null, *DEFAULT_ARGS is set to the found command
default args (possibly empty).
If the located command was an abbreviation, this routine returns the base
command of the abbreviation. Note that *DEFAULT_ARGS will contain the
default args defined for the alias.
It does no error reporting whatsoever; control will always return
to the superior routine.
In the case of an ambiguous return (-1), *RESULT_LIST will be set to point
at the prefix_command (ie. the best match) *or* (special case) will be NULL
if no prefix command was ever found. For example, in the case of "info a",
"info" matches without ambiguity, but "a" could be "args" or "address", so
*RESULT_LIST is set to the cmd_list_element for "info". So in this case
RESULT_LIST should not be interpreted as a pointer to the beginning of a
list; it simply points to a specific command. In the case of an ambiguous
return *TEXT is advanced past the last non-ambiguous prefix (e.g.
"info t" can be "info types" or "info target"; upon return *TEXT has been
advanced past "info ").
If RESULT_LIST is NULL, don't set *RESULT_LIST (but don't otherwise
affect the operation).
This routine does *not* modify the text pointed to by TEXT.
If IGNORE_HELP_CLASSES is nonzero, ignore any command list elements which
are actually help classes rather than commands (i.e. the function field of
the struct cmd_list_element is NULL).
When LOOKUP_FOR_COMPLETION_P is true the completion is being requested
for the completion engine, no warnings should be printed. */
extern struct cmd_list_element *lookup_cmd_1
(const char **text, struct cmd_list_element *clist,
struct cmd_list_element **result_list, std::string *default_args,
int ignore_help_classes, bool lookup_for_completion_p = false);
/* Look up the command called NAME in the command list LIST.
Unlike LOOKUP_CMD, partial matches are ignored and only exact matches
on NAME are considered.
LIST is a chain of struct cmd_list_element's.
If IGNORE_HELP_CLASSES is true (the default), ignore any command list
elements which are actually help classes rather than commands (i.e.
the function field of the struct cmd_list_element is null).
If found, return the struct cmd_list_element for that command,
otherwise return NULLPTR. */
extern struct cmd_list_element *lookup_cmd_exact
(const char *name,
struct cmd_list_element *list,
bool ignore_help_classes = true);
extern struct cmd_list_element *deprecate_cmd (struct cmd_list_element *,
const char * );
extern void deprecated_cmd_warning (const char *, struct cmd_list_element *);
extern int lookup_cmd_composition (const char *text,
struct cmd_list_element **alias,
struct cmd_list_element **prefix_cmd,
struct cmd_list_element **cmd);
extern struct cmd_list_element *add_com (const char *, enum command_class,
cmd_simple_func_ftype *fun,
const char *);
extern cmd_list_element *add_com_alias (const char *name,
cmd_list_element *target,
command_class theclass,
int abbrev_flag);
extern struct cmd_list_element *add_com_suppress_notification
(const char *name, enum command_class theclass,
cmd_simple_func_ftype *fun, const char *doc,
bool *suppress_notification);
extern struct cmd_list_element *add_info (const char *,
cmd_simple_func_ftype *fun,
const char *);
extern cmd_list_element *add_info_alias (const char *name,
cmd_list_element *target,
int abbrev_flag);
extern void complete_on_cmdlist (struct cmd_list_element *,
completion_tracker &tracker,
const char *, const char *, int);
extern void complete_on_enum (completion_tracker &tracker,
const char *const *enumlist,
const char *, const char *);
/* Functions that implement commands about CLI commands. */
extern void help_list (struct cmd_list_element *, const char *,
enum command_class, struct ui_file *);
/* Method for show a set/show variable's VALUE on FILE. */
typedef void (show_value_ftype) (struct ui_file *file,
int from_tty,
struct cmd_list_element *cmd,
const char *value);
/* Various sets of extra literals accepted. */
extern const literal_def integer_unlimited_literals[];
extern const literal_def uinteger_unlimited_literals[];
extern const literal_def pinteger_unlimited_literals[];
extern set_show_commands add_setshow_enum_cmd
(const char *name, command_class theclass, const char *const *enumlist,
const char **var, const char *set_doc, const char *show_doc,
const char *help_doc, cmd_func_ftype *set_func,
show_value_ftype *show_func, cmd_list_element **set_list,
cmd_list_element **show_list);
extern set_show_commands add_setshow_enum_cmd
(const char *name, command_class theclass, const char *const *enumlist,
const char *set_doc, const char *show_doc,
const char *help_doc, setting_func_types<const char *>::set set_func,
setting_func_types<const char *>::get get_func, show_value_ftype *show_func,
cmd_list_element **set_list, cmd_list_element **show_list);
extern set_show_commands add_setshow_auto_boolean_cmd
(const char *name, command_class theclass, auto_boolean *var,
const char *set_doc, const char *show_doc, const char *help_doc,
cmd_func_ftype *set_func, show_value_ftype *show_func,
cmd_list_element **set_list, cmd_list_element **show_list);
extern set_show_commands add_setshow_auto_boolean_cmd
(const char *name, command_class theclass, const char *set_doc,
const char *show_doc, const char *help_doc,
setting_func_types<enum auto_boolean>::set set_func,
setting_func_types<enum auto_boolean>::get get_func,
show_value_ftype *show_func, cmd_list_element **set_list,
cmd_list_element **show_list);
extern set_show_commands add_setshow_boolean_cmd
(const char *name, command_class theclass, bool *var, const char *set_doc,
const char *show_doc, const char *help_doc, cmd_func_ftype *set_func,
show_value_ftype *show_func, cmd_list_element **set_list,
cmd_list_element **show_list);
extern set_show_commands add_setshow_boolean_cmd
(const char *name, command_class theclass, const char *set_doc,
const char *show_doc, const char *help_doc,
setting_func_types<bool>::set set_func,
setting_func_types<bool>::get get_func, show_value_ftype *show_func,
cmd_list_element **set_list, cmd_list_element **show_list);
extern set_show_commands add_setshow_filename_cmd
(const char *name, command_class theclass, std::string *var, const char *set_doc,
const char *show_doc, const char *help_doc, cmd_func_ftype *set_func,
show_value_ftype *show_func, cmd_list_element **set_list,
cmd_list_element **show_list);
extern set_show_commands add_setshow_filename_cmd
(const char *name, command_class theclass, const char *set_doc,
const char *show_doc, const char *help_doc,
setting_func_types<std::string>::set set_func,
setting_func_types<std::string>::get get_func, show_value_ftype *show_func,
cmd_list_element **set_list, cmd_list_element **show_list);
extern set_show_commands add_setshow_string_cmd
(const char *name, command_class theclass, std::string *var, const char *set_doc,
const char *show_doc, const char *help_doc, cmd_func_ftype *set_func,
show_value_ftype *show_func, cmd_list_element **set_list,
cmd_list_element **show_list);
extern set_show_commands add_setshow_string_cmd
(const char *name, command_class theclass, const char *set_doc,
const char *show_doc, const char *help_doc,
setting_func_types<std::string>::set set_func,
setting_func_types<std::string>::get get_func,
show_value_ftype *show_func, cmd_list_element **set_list,
cmd_list_element **show_list);
extern set_show_commands add_setshow_string_noescape_cmd
(const char *name, command_class theclass, std::string *var, const char *set_doc,
const char *show_doc, const char *help_doc, cmd_func_ftype *set_func,
show_value_ftype *show_func, cmd_list_element **set_list,
cmd_list_element **show_list);
extern set_show_commands add_setshow_string_noescape_cmd
(const char *name, command_class theclass, const char *set_doc,
const char *show_doc, const char *help_doc,
setting_func_types<std::string>::set set_func,
setting_func_types<std::string>::get get_func, show_value_ftype *show_func,
cmd_list_element **set_list, cmd_list_element **show_list);
extern set_show_commands add_setshow_optional_filename_cmd
(const char *name, command_class theclass, std::string *var, const char *set_doc,
const char *show_doc, const char *help_doc, cmd_func_ftype *set_func,
show_value_ftype *show_func, cmd_list_element **set_list,
cmd_list_element **show_list);
extern set_show_commands add_setshow_optional_filename_cmd
(const char *name, command_class theclass, const char *set_doc,
const char *show_doc, const char *help_doc,
setting_func_types<std::string>::set set_func,
setting_func_types<std::string>::get get_func,
show_value_ftype *show_func, cmd_list_element **set_list,
cmd_list_element **show_list);
extern set_show_commands add_setshow_integer_cmd
(const char *name, command_class theclass, int *var,
const literal_def *extra_literals, const char *set_doc,
const char *show_doc, const char *help_doc, cmd_func_ftype *set_func,
show_value_ftype *show_func, cmd_list_element **set_list,
cmd_list_element **show_list);
extern set_show_commands add_setshow_integer_cmd
(const char *name, command_class theclass, const literal_def *extra_literals,
const char *set_doc, const char *show_doc, const char *help_doc,
setting_func_types<int>::set set_func,
setting_func_types<int>::get get_func, show_value_ftype *show_func,
cmd_list_element **set_list, cmd_list_element **show_list);
extern set_show_commands add_setshow_integer_cmd
(const char *name, command_class theclass, int *var, const char *set_doc,
const char *show_doc, const char *help_doc, cmd_func_ftype *set_func,
show_value_ftype *show_func, cmd_list_element **set_list,
cmd_list_element **show_list);
extern set_show_commands add_setshow_integer_cmd
(const char *name, command_class theclass, const char *set_doc,
const char *show_doc, const char *help_doc,
setting_func_types<int>::set set_func,
setting_func_types<int>::get get_func, show_value_ftype *show_func,
cmd_list_element **set_list, cmd_list_element **show_list);
extern set_show_commands add_setshow_pinteger_cmd
(const char *name, command_class theclass, int *var,
const literal_def *extra_literals, const char *set_doc,
const char *show_doc, const char *help_doc, cmd_func_ftype *set_func,
show_value_ftype *show_func, cmd_list_element **set_list,
cmd_list_element **show_list);
extern set_show_commands add_setshow_pinteger_cmd
(const char *name, command_class theclass, const literal_def *extra_literals,
const char *set_doc, const char *show_doc, const char *help_doc,
setting_func_types<int>::set set_func,
setting_func_types<int>::get get_func, show_value_ftype *show_func,
cmd_list_element **set_list, cmd_list_element **show_list);
extern set_show_commands add_setshow_uinteger_cmd
(const char *name, command_class theclass, unsigned int *var,
const literal_def *extra_literals,
const char *set_doc, const char *show_doc, const char *help_doc,
cmd_func_ftype *set_func, show_value_ftype *show_func,
cmd_list_element **set_list, cmd_list_element **show_list);
extern set_show_commands add_setshow_uinteger_cmd
(const char *name, command_class theclass, const literal_def *extra_literals,
const char *set_doc, const char *show_doc, const char *help_doc,
setting_func_types<unsigned int>::set set_func,
setting_func_types<unsigned int>::get get_func, show_value_ftype *show_func,
cmd_list_element **set_list, cmd_list_element **show_list);
extern set_show_commands add_setshow_uinteger_cmd
(const char *name, command_class theclass, unsigned int *var,
const char *set_doc, const char *show_doc, const char *help_doc,
cmd_func_ftype *set_func, show_value_ftype *show_func,
cmd_list_element **set_list, cmd_list_element **show_list);
extern set_show_commands add_setshow_uinteger_cmd
(const char *name, command_class theclass, const char *set_doc,
const char *show_doc, const char *help_doc,
setting_func_types<unsigned int>::set set_func,
setting_func_types<unsigned int>::get get_func, show_value_ftype *show_func,
cmd_list_element **set_list, cmd_list_element **show_list);
extern set_show_commands add_setshow_zinteger_cmd
(const char *name, command_class theclass, int *var, const char *set_doc,
const char *show_doc, const char *help_doc, cmd_func_ftype *set_func,
show_value_ftype *show_func, cmd_list_element **set_list,
cmd_list_element **show_list);
extern set_show_commands add_setshow_zinteger_cmd
(const char *name, command_class theclass, const char *set_doc,
const char *show_doc, const char *help_doc,
setting_func_types<int>::set set_func,
setting_func_types<int>::get get_func, show_value_ftype *show_func,
cmd_list_element **set_list, cmd_list_element **show_list);
extern set_show_commands add_setshow_zuinteger_cmd
(const char *name, command_class theclass, unsigned int *var,
const char *set_doc, const char *show_doc, const char *help_doc,
cmd_func_ftype *set_func, show_value_ftype *show_func,
cmd_list_element **set_list, cmd_list_element **show_list);
extern set_show_commands add_setshow_zuinteger_cmd
(const char *name, command_class theclass, const char *set_doc,
const char *show_doc, const char *help_doc,
setting_func_types<unsigned int>::set set_func,
setting_func_types<unsigned int>::get get_func, show_value_ftype *show_func,
cmd_list_element **set_list, cmd_list_element **show_list);
extern set_show_commands add_setshow_zuinteger_unlimited_cmd
(const char *name, command_class theclass, int *var, const char *set_doc,
const char *show_doc, const char *help_doc, cmd_func_ftype *set_func,
show_value_ftype *show_func, cmd_list_element **set_list,
cmd_list_element **show_list);
extern set_show_commands add_setshow_zuinteger_unlimited_cmd
(const char *name, command_class theclass, const char *set_doc,
const char *show_doc, const char *help_doc,
setting_func_types<int>::set set_func, setting_func_types<int>::get get_func,
show_value_ftype *show_func, cmd_list_element **set_list,
cmd_list_element **show_list);
/* Do a "show" command for each thing on a command list. */
extern void cmd_show_list (struct cmd_list_element *, int);
/* Used everywhere whenever at least one parameter is required and
none is specified. */
extern void error_no_arg (const char *) ATTRIBUTE_NORETURN;
/* Command line saving and repetition.
Each input line executed is saved to possibly be repeated either
when the user types an empty line, or be repeated by a command
that wants to repeat the previously executed command. The below
functions control command repetition. */
/* Commands call dont_repeat if they do not want to be repeated by null
lines or by repeat_previous (). */
extern void dont_repeat ();
/* Commands call repeat_previous if they want to repeat the previous
command. Such commands that repeat the previous command must
indicate to not repeat themselves, to avoid recursive repeat.
repeat_previous marks the current command as not repeating, and
ensures get_saved_command_line returns the previous command, so
that the currently executing command can repeat it. If there's no
previous command, throws an error. Otherwise, returns the result
of get_saved_command_line, which now points at the command to
repeat. */
extern const char *repeat_previous ();
/* Prevent dont_repeat from working, and return a cleanup that
restores the previous state. */
extern scoped_restore_tmpl<int> prevent_dont_repeat (void);
/* Set the arguments that will be passed if the current command is
repeated. Note that the passed-in string must be a constant. */
extern void set_repeat_arguments (const char *args);
/* Returns the saved command line to repeat.
When a command is being executed, this is the currently executing
command line, unless the currently executing command has called
repeat_previous (): in this case, get_saved_command_line returns
the previously saved command line. */
extern char *get_saved_command_line ();
/* Takes a copy of CMD, for possible repetition. */
extern void save_command_line (const char *cmd);
/* Used to mark commands that don't do anything. If we just leave the
function field NULL, the command is interpreted as a help topic, or
as a class of commands. */
extern void not_just_help_class_command (const char *, int);
/* Call the command function. */
extern void cmd_func (struct cmd_list_element *cmd,
const char *args, int from_tty);
#endif /* !defined (COMMAND_H) */
|