1 /* ***DEPRECATED*** The gdblib files must not be calling/using things in any
2 of the possible command languages. If necessary, a hook (that may be
3 present or not) must be used and set to the appropriate routine by any
4 command language that cares about it. If you are having to include this
5 file you are possibly doing things the old way. This file will disapear.
6 2000-12-01 fnasser@redhat.com */
8 /* Header file for command-reading library command.c.
9 Copyright 1986, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1999, 2000
10 Free Software Foundation, Inc.
12 This program is free software; you can redistribute it and/or modify
13 it under the terms of the GNU General Public License as published by
14 the Free Software Foundation; either version 2 of the License, or
15 (at your option) any later version.
17 This program is distributed in the hope that it will be useful,
18 but WITHOUT ANY WARRANTY; without even the implied warranty of
19 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 GNU General Public License for more details.
22 You should have received a copy of the GNU General Public License
23 along with this program; if not, write to the Free Software
24 Foundation, Inc., 59 Temple Place - Suite 330,
25 Boston, MA 02111-1307, USA. */
27 #if !defined (COMMAND_H)
30 /* Command classes are top-level categories into which commands are broken
31 down for "help" purposes.
32 Notes on classes: class_alias is for alias commands which are not
33 abbreviations of the original command. class-pseudo is for
34 commands which are not really commands nor help topics ("stop"). */
38 /* Special args to help_list */
39 class_deprecated
, all_classes
= -2, all_commands
= -1,
40 /* Classes of commands */
41 no_class
= -1, class_run
= 0, class_vars
, class_stack
,
42 class_files
, class_support
, class_info
, class_breakpoint
, class_trace
,
43 class_alias
, class_obscure
, class_user
, class_maintenance
,
44 class_pseudo
, class_tui
, class_xdb
47 /* Not a set/show command. Note that some commands which begin with
48 "set" or "show" might be in this category, if their syntax does
49 not fall into one of the following categories. */
50 typedef enum cmd_types
58 /* Reasonable values for an AUTO_BOOLEAN variable. */
61 CMD_AUTO_BOOLEAN_TRUE
,
62 CMD_AUTO_BOOLEAN_FALSE
,
66 /* Types of "set" or "show" command. */
67 typedef enum var_types
69 /* "on" or "off". *VAR is an integer which is nonzero for on,
73 /* "on" / "true" / "enable" or "off" / "false" / "disable" or
74 "auto. *VAR is an ``enum cmd_auto_boolean''. NOTE: In general
75 a custom show command will need to be implemented - one that
76 for "auto" prints both the "auto" and the current auto-selected
80 /* Unsigned Integer. *VAR is an unsigned int. The user can type 0
81 to mean "unlimited", which is stored in *VAR as UINT_MAX. */
84 /* Like var_uinteger but signed. *VAR is an int. The user can type 0
85 to mean "unlimited", which is stored in *VAR as INT_MAX. */
88 /* String which the user enters with escapes (e.g. the user types \n and
89 it is a real newline in the stored string).
90 *VAR is a malloc'd string, or NULL if the string is empty. */
92 /* String which stores what the user types verbatim.
93 *VAR is a malloc'd string, or NULL if the string is empty. */
95 /* String which stores a filename.
96 *VAR is a malloc'd string, or NULL if the string is empty. */
98 /* ZeroableInteger. *VAR is an int. Like Unsigned Integer except
99 that zero really means zero. */
101 /* Enumerated type. Can only have one of the specified values. *VAR is a
102 char pointer to the name of the element that we find. */
107 /* This structure records one command'd definition. */
110 /* This flag is used by the code executing commands to warn the user
111 the first time a deprecated command is used, see the 'flags' field in
112 the following struct.
114 #define CMD_DEPRECATED 0x1
115 #define DEPRECATED_WARN_USER 0x2
116 #define MALLOCED_REPLACEMENT 0x4
118 struct cmd_list_element
120 /* Points to next command in this list. */
121 struct cmd_list_element
*next
;
123 /* Name of this command. */
126 /* Command class; class values are chosen by application program. */
127 enum command_class
class;
129 /* Function definition of this command. NULL for command class
130 names and for help topics that are not really commands. */
133 /* If type is not_set_cmd, call it like this: */
134 void (*cfunc
) (char *args
, int from_tty
);
136 /* If type is set_cmd or show_cmd, first set the variables, and
138 void (*sfunc
) (char *args
, int from_tty
, struct cmd_list_element
* c
);
142 /* Documentation of this command (or help topic).
143 First line is brief documentation; remaining lines form, with it,
144 the full documentation. First line should end with a period.
145 Entire string should also end with a period, not a newline. */
148 /* flags : a bitfield
150 bit 0: (LSB) CMD_DEPRECATED, when 1 indicated that this command
151 is deprecated. It may be removed from gdb's command set in the
154 bit 1: DEPRECATED_WARN_USER, the user needs to be warned that
155 this is a deprecated command. The user should only be warned
156 the first time a command is used.
158 bit 2: MALLOCED_REPLACEMENT, when functions are deprecated at
159 compile time (this is the way it should, in general, be done)
160 the memory containing the replacement string is statically
161 allocated. In some cases it makes sense to deprecate commands
162 at runtime (the testsuite is one example). In this case the
163 memory for replacement is malloc'ed. When a command is
164 undeprecated or re-deprecated at runtime we don't want to risk
165 calling free on statically allocated memory, so we check this
170 /* if this command is deprecated, this is the replacement name */
173 /* If this command represents a show command, then this function
174 is called before the variable's value is examined. */
175 void (*pre_show_hook
) (struct cmd_list_element
*c
);
177 /* Hook for another command to be executed before this command. */
178 struct cmd_list_element
*hook_pre
;
180 /* Hook for another command to be executed after this command. */
181 struct cmd_list_element
*hook_post
;
183 /* Flag that specifies if this command is already running it's hook. */
184 /* Prevents the possibility of hook recursion. */
187 /* Nonzero identifies a prefix command. For them, the address
188 of the variable containing the list of subcommands. */
189 struct cmd_list_element
**prefixlist
;
191 /* For prefix commands only:
192 String containing prefix commands to get here: this one
193 plus any others needed to get to it. Should end in a space.
194 It is used before the word "command" in describing the
195 commands reached through this prefix. */
198 /* For prefix commands only:
199 nonzero means do not get an error if subcommand is not
200 recognized; call the prefix's own function in that case. */
203 /* Nonzero says this is an abbreviation, and should not
204 be mentioned in lists of commands.
205 This allows "br<tab>" to complete to "break", which it
206 otherwise wouldn't. */
209 /* Completion routine for this command. TEXT is the text beyond
210 what was matched for the command itself (leading whitespace is
211 skipped). It stops where we are supposed to stop completing
212 (rl_point) and is '\0' terminated.
214 Return value is a malloc'd vector of pointers to possible completions
215 terminated with NULL. If there are no completions, returning a pointer
216 to a NULL would work but returning NULL itself is also valid.
217 WORD points in the same buffer as TEXT, and completions should be
218 returned relative to this position. For example, suppose TEXT is "foo"
219 and we want to complete to "foobar". If WORD is "oo", return
220 "oobar"; if WORD is "baz/foo", return "baz/foobar". */
221 char **(*completer
) (char *text
, char *word
);
223 /* Type of "set" or "show" command (or SET_NOT_SET if not "set"
227 /* Pointer to variable affected by "set" and "show". Doesn't matter
228 if type is not_set. */
231 /* What kind of variable is *VAR? */
234 /* Pointer to NULL terminated list of enumerated values (like argv). */
237 /* Pointer to command strings of user-defined commands */
238 struct command_line
*user_commands
;
240 /* Pointer to command that is hooked by this one, (by hook_pre)
241 so the hook can be removed when this one is deleted. */
242 struct cmd_list_element
*hookee_pre
;
244 /* Pointer to command that is hooked by this one, (by hook_post)
245 so the hook can be removed when this one is deleted. */
246 struct cmd_list_element
*hookee_post
;
248 /* Pointer to command that is aliased by this one, so the
249 aliased command can be located in case it has been hooked. */
250 struct cmd_list_element
*cmd_pointer
;
253 /* Forward-declarations of the entry-points of command.c. */
255 extern struct cmd_list_element
*add_cmd (char *, enum command_class
,
256 void (*fun
) (char *, int), char *,
257 struct cmd_list_element
**);
259 extern struct cmd_list_element
*add_alias_cmd (char *, char *,
260 enum command_class
, int,
261 struct cmd_list_element
**);
263 extern struct cmd_list_element
*add_prefix_cmd (char *, enum command_class
,
264 void (*fun
) (char *, int),
266 struct cmd_list_element
**,
268 struct cmd_list_element
**);
270 extern struct cmd_list_element
*add_abbrev_prefix_cmd (char *,
275 struct cmd_list_element
277 struct cmd_list_element
280 extern struct cmd_list_element
*lookup_cmd (char **,
281 struct cmd_list_element
*, char *,
284 extern struct cmd_list_element
*lookup_cmd_1 (char **,
285 struct cmd_list_element
*,
286 struct cmd_list_element
**,
289 extern struct cmd_list_element
*
290 deprecate_cmd (struct cmd_list_element
*, char * );
293 deprecated_cmd_warning (char **);
296 lookup_cmd_composition (char *text
,
297 struct cmd_list_element
**alias
,
298 struct cmd_list_element
**prefix_cmd
,
299 struct cmd_list_element
**cmd
);
301 extern struct cmd_list_element
*add_com (char *, enum command_class
,
302 void (*fun
) (char *, int), char *);
304 extern struct cmd_list_element
*add_com_alias (char *, char *,
305 enum command_class
, int);
307 extern struct cmd_list_element
*add_info (char *, void (*fun
) (char *, int),
310 extern struct cmd_list_element
*add_info_alias (char *, char *, int);
312 extern char **complete_on_cmdlist (struct cmd_list_element
*, char *, char *);
314 extern char **complete_on_enum (const char *enumlist
[], char *, char *);
316 extern void delete_cmd (char *, struct cmd_list_element
**);
318 extern void help_cmd (char *, struct ui_file
*);
320 extern void help_list (struct cmd_list_element
*, char *,
321 enum command_class
, struct ui_file
*);
323 extern void help_cmd_list (struct cmd_list_element
*, enum command_class
,
324 char *, int, struct ui_file
*);
326 extern struct cmd_list_element
*add_set_cmd (char *name
, enum
328 var_types var_type
, void *var
,
330 struct cmd_list_element
**list
);
332 extern struct cmd_list_element
*add_set_enum_cmd (char *name
,
333 enum command_class
class,
334 const char *enumlist
[],
337 struct cmd_list_element
**list
);
339 extern struct cmd_list_element
*add_set_auto_boolean_cmd (char *name
,
340 enum command_class
class,
341 enum cmd_auto_boolean
*var
,
343 struct cmd_list_element
**list
);
345 extern struct cmd_list_element
*add_set_boolean_cmd (char *name
,
346 enum command_class
class,
349 struct cmd_list_element
**list
);
351 extern struct cmd_list_element
*add_show_from_set (struct cmd_list_element
*,
352 struct cmd_list_element
355 /* Do a "show" command for each thing on a command list. */
357 extern void cmd_show_list (struct cmd_list_element
*, int, char *);
359 extern NORETURN
void error_no_arg (char *) ATTR_NORETURN
;
361 extern void dont_repeat (void);
363 /* Used to mark commands that don't do anything. If we just leave the
364 function field NULL, the command is interpreted as a help topic, or
365 as a class of commands. */
367 extern void not_just_help_class_command (char *, int);
369 #endif /* !defined (COMMAND_H) */
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