1 /* Header file for command-reading library command.c.
2 Copyright (C) 1986, 1989, 1990, 2000 Free Software Foundation, Inc.
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 59 Temple Place - Suite 330,
17 Boston, MA 02111-1307, USA. */
19 #if !defined (COMMAND_H)
22 /* Command classes are top-level categories into which commands are broken
23 down for "help" purposes.
24 Notes on classes: class_alias is for alias commands which are not
25 abbreviations of the original command. class-pseudo is for
26 commands which are not really commands nor help topics ("stop"). */
30 /* Special args to help_list */
31 class_deprecated
, all_classes
= -2, all_commands
= -1,
32 /* Classes of commands */
33 no_class
= -1, class_run
= 0, class_vars
, class_stack
,
34 class_files
, class_support
, class_info
, class_breakpoint
, class_trace
,
35 class_alias
, class_obscure
, class_user
, class_maintenance
,
36 class_pseudo
, class_tui
, class_xdb
,
39 /* Not a set/show command. Note that some commands which begin with
40 "set" or "show" might be in this category, if their syntax does
41 not fall into one of the following categories. */
42 typedef enum cmd_types
50 /* Types of "set" or "show" command. */
51 typedef enum var_types
53 /* "on" or "off". *VAR is an integer which is nonzero for on,
56 /* Unsigned Integer. *VAR is an unsigned int. The user can type 0
57 to mean "unlimited", which is stored in *VAR as UINT_MAX. */
60 /* Like var_uinteger but signed. *VAR is an int. The user can type 0
61 to mean "unlimited", which is stored in *VAR as INT_MAX. */
64 /* String which the user enters with escapes (e.g. the user types \n and
65 it is a real newline in the stored string).
66 *VAR is a malloc'd string, or NULL if the string is empty. */
68 /* String which stores what the user types verbatim.
69 *VAR is a malloc'd string, or NULL if the string is empty. */
71 /* String which stores a filename.
72 *VAR is a malloc'd string, or NULL if the string is empty. */
74 /* ZeroableInteger. *VAR is an int. Like Unsigned Integer except
75 that zero really means zero. */
77 /* Enumerated type. Can only have one of the specified values. *VAR is a
78 char pointer to the name of the element that we find. */
83 /* This structure records one command'd definition. */
86 /* This flag is used by the code executing commands to warn the user
87 the first time a deprecated command is used, see the 'flags' field in
90 #define CMD_DEPRECATED 0x1
91 #define DEPRECATED_WARN_USER 0x2
92 #define MALLOCED_REPLACEMENT 0x4
94 struct cmd_list_element
96 /* Points to next command in this list. */
97 struct cmd_list_element
*next
;
99 /* Name of this command. */
102 /* Command class; class values are chosen by application program. */
103 enum command_class
class;
105 /* Function definition of this command.
106 NO_FUNCTION for command class names and for help topics that
107 are not really commands. */
110 /* If type is not_set_cmd, call it like this: */
111 void (*cfunc
) PARAMS ((char *args
, int from_tty
));
113 /* If type is cmd_set or show_cmd, first set the variables, and
115 void (*sfunc
) PARAMS ((char *args
, int from_tty
,
116 struct cmd_list_element
* c
));
119 #define NO_FUNCTION ((void (*) PARAMS((char *args, int from_tty))) 0)
121 /* Documentation of this command (or help topic).
122 First line is brief documentation; remaining lines form, with it,
123 the full documentation. First line should end with a period.
124 Entire string should also end with a period, not a newline. */
127 /* flags : a bitfield
129 bit 0: (LSB) CMD_DEPRECATED, when 1 indicated that this command
130 is deprecated. It may be removed from gdb's command set in the
133 bit 1: DEPRECATED_WARN_USER, the user needs to be warned that
134 this is a deprecated command. The user should only be warned
135 the first time a command is used.
137 bit 2: MALLOCED_REPLACEMENT, when functions are deprecated at
138 compile time (this is the way it should, in general, be done)
139 the memory comtaining the replacement string is statically
140 allocated. In some cases it makes sense to deprecate commands
141 at runtime (the testsuite is one example). In this case the
142 memory for replacement is malloc'ed. When a command is
143 undeprecated or re-deprecated at runtime we don't want to risk
144 calling free on statically allocated memory, so we check this
149 /* if this command is deprecated, this is the replacement name */
152 /* Hook for another command to be executed before this command. */
153 struct cmd_list_element
*hook
;
155 /* Nonzero identifies a prefix command. For them, the address
156 of the variable containing the list of subcommands. */
157 struct cmd_list_element
**prefixlist
;
159 /* For prefix commands only:
160 String containing prefix commands to get here: this one
161 plus any others needed to get to it. Should end in a space.
162 It is used before the word "command" in describing the
163 commands reached through this prefix. */
166 /* For prefix commands only:
167 nonzero means do not get an error if subcommand is not
168 recognized; call the prefix's own function in that case. */
171 /* Nonzero says this is an abbreviation, and should not
172 be mentioned in lists of commands.
173 This allows "br<tab>" to complete to "break", which it
174 otherwise wouldn't. */
177 /* Completion routine for this command. TEXT is the text beyond
178 what was matched for the command itself (leading whitespace is
179 skipped). It stops where we are supposed to stop completing
180 (rl_point) and is '\0' terminated.
182 Return value is a malloc'd vector of pointers to possible completions
183 terminated with NULL. If there are no completions, returning a pointer
184 to a NULL would work but returning NULL itself is also valid.
185 WORD points in the same buffer as TEXT, and completions should be
186 returned relative to this position. For example, suppose TEXT is "foo"
187 and we want to complete to "foobar". If WORD is "oo", return
188 "oobar"; if WORD is "baz/foo", return "baz/foobar". */
189 char **(*completer
) PARAMS ((char *text
, char *word
));
191 /* Type of "set" or "show" command (or SET_NOT_SET if not "set"
195 /* Pointer to variable affected by "set" and "show". Doesn't matter
196 if type is not_set. */
199 /* What kind of variable is *VAR? */
202 /* Pointer to NULL terminated list of enumerated values (like argv). */
205 /* Pointer to command strings of user-defined commands */
206 struct command_line
*user_commands
;
208 /* Pointer to command that is hooked by this one,
209 so the hook can be removed when this one is deleted. */
210 struct cmd_list_element
*hookee
;
212 /* Pointer to command that is aliased by this one, so the
213 aliased command can be located in case it has been hooked. */
214 struct cmd_list_element
*cmd_pointer
;
217 /* Forward-declarations of the entry-points of command.c. */
219 extern struct cmd_list_element
*
220 add_cmd
PARAMS ((char *, enum command_class
, void (*fun
) (char *, int),
221 char *, struct cmd_list_element
**));
223 extern struct cmd_list_element
*
224 add_alias_cmd
PARAMS ((char *, char *, enum command_class
, int,
225 struct cmd_list_element
**));
227 extern struct cmd_list_element
*
228 add_prefix_cmd
PARAMS ((char *, enum command_class
, void (*fun
) (char *, int),
229 char *, struct cmd_list_element
**, char *, int,
230 struct cmd_list_element
**));
232 extern struct cmd_list_element
*
233 add_abbrev_prefix_cmd
PARAMS ((char *, enum command_class
,
234 void (*fun
) (char *, int), char *,
235 struct cmd_list_element
**, char *, int,
236 struct cmd_list_element
**));
238 extern struct cmd_list_element
*
239 lookup_cmd
PARAMS ((char **, struct cmd_list_element
*, char *, int, int));
241 extern struct cmd_list_element
*
242 lookup_cmd_1
PARAMS ((char **, struct cmd_list_element
*,
243 struct cmd_list_element
**, int));
245 extern struct cmd_list_element
*
246 deprecate_cmd (struct cmd_list_element
*, char * );
249 deprecated_cmd_warning (char **);
252 lookup_cmd_composition (char *text
,
253 struct cmd_list_element
**alias
,
254 struct cmd_list_element
**prefix_cmd
,
255 struct cmd_list_element
**cmd
);
257 extern struct cmd_list_element
*
258 add_com
PARAMS ((char *, enum command_class
, void (*fun
) (char *, int),
261 extern struct cmd_list_element
*
262 add_com_alias
PARAMS ((char *, char *, enum command_class
, int));
264 extern struct cmd_list_element
*
265 add_info
PARAMS ((char *, void (*fun
) (char *, int), char *));
267 extern struct cmd_list_element
*
268 add_info_alias
PARAMS ((char *, char *, int));
271 complete_on_cmdlist
PARAMS ((struct cmd_list_element
*, char *, char *));
274 complete_on_enum
PARAMS ((char **enumlist
, char *, char *));
277 delete_cmd
PARAMS ((char *, struct cmd_list_element
**));
279 extern void help_cmd (char *, struct ui_file
*);
281 extern void help_list (struct cmd_list_element
*, char *,
282 enum command_class
, struct ui_file
*);
284 extern void help_cmd_list (struct cmd_list_element
*, enum command_class
,
285 char *, int, struct ui_file
*);
287 extern struct cmd_list_element
*
288 add_set_cmd
PARAMS ((char *, enum command_class
, var_types
, char *, char *,
289 struct cmd_list_element
**));
291 extern struct cmd_list_element
*
292 add_set_enum_cmd
PARAMS ((char *name
, enum command_class
, char *list
[],
293 char *var
, char *doc
, struct cmd_list_element
** c
));
295 extern struct cmd_list_element
*
296 add_show_from_set
PARAMS ((struct cmd_list_element
*,
297 struct cmd_list_element
**));
299 /* Do a "set" or "show" command. ARG is NULL if no argument, or the text
300 of the argument, and FROM_TTY is nonzero if this command is being entered
301 directly by the user (i.e. these are just like any other
302 command). C is the command list element for the command. */
305 do_setshow_command
PARAMS ((char *, int, struct cmd_list_element
*));
307 /* Do a "show" command for each thing on a command list. */
310 cmd_show_list
PARAMS ((struct cmd_list_element
*, int, char *));
313 error_no_arg
PARAMS ((char *));
316 dont_repeat
PARAMS ((void));
318 /* Used to mark commands that don't do anything. If we just leave the
319 function field NULL, the command is interpreted as a help topic, or
320 as a class of commands. */
323 not_just_help_class_command
PARAMS ((char *, int));
325 #endif /* !defined (COMMAND_H) */