1 /* Header file for command creation.
3 Copyright (C) 1986-2014 Free Software Foundation, Inc.
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 3 of the License, or
8 (at your option) any later version.
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with this program. If not, see <http://www.gnu.org/licenses/>. */
18 #if !defined (COMMAND_H)
23 /* This file defines the public interface for any code wanting to
26 /* Command classes are top-level categories into which commands are
27 broken down for "help" purposes.
29 Notes on classes: class_alias is for alias commands which are not
30 abbreviations of the original command. class-pseudo is for
31 commands which are not really commands nor help topics ("stop"). */
35 /* Special args to help_list */
36 class_deprecated = -3, all_classes = -2, all_commands = -1,
37 /* Classes of commands */
38 no_class = -1, class_run = 0, class_vars, class_stack, class_files,
39 class_support, class_info, class_breakpoint, class_trace,
40 class_alias, class_bookmark, class_obscure, class_maintenance,
41 class_pseudo, class_tui, class_user, class_xdb,
42 no_set_class /* Used for "show" commands that have no corresponding
46 /* FIXME: cagney/2002-03-17: Once cmd_type() has been removed, ``enum
47 cmd_types'' can be moved from "command.h" to "cli-decode.h". */
48 /* Not a set/show command. Note that some commands which begin with
49 "set" or "show" might be in this category, if their syntax does
50 not fall into one of the following categories. */
51 typedef enum cmd_types
59 /* Types of "set" or "show" command. */
60 typedef enum var_types
62 /* "on" or "off". *VAR is an integer which is nonzero for on,
66 /* "on" / "true" / "enable" or "off" / "false" / "disable" or
67 "auto. *VAR is an ``enum auto_boolean''. NOTE: In general a
68 custom show command will need to be implemented - one that for
69 "auto" prints both the "auto" and the current auto-selected
73 /* Unsigned Integer. *VAR is an unsigned int. The user can type
74 0 to mean "unlimited", which is stored in *VAR as UINT_MAX. */
77 /* Like var_uinteger but signed. *VAR is an int. The user can
78 type 0 to mean "unlimited", which is stored in *VAR as
79 INT_MAX. The only remaining use of it is the Python API.
80 Don't use it elsewhere. */
83 /* String which the user enters with escapes (e.g. the user types
84 \n and it is a real newline in the stored string).
85 *VAR is a malloc'd string, or NULL if the string is empty. */
87 /* String which stores what the user types verbatim.
88 *VAR is a malloc'd string, or NULL if the string is empty. */
90 /* String which stores a filename. (*VAR) is a malloc'd string,
91 or "" if the string was empty. */
92 var_optional_filename,
93 /* String which stores a filename. (*VAR) is a malloc'd
96 /* ZeroableInteger. *VAR is an int. Like var_integer except
97 that zero really means zero. */
99 /* ZeroableUnsignedInteger. *VAR is an unsigned int. Zero really
102 /* ZeroableUnsignedInteger with unlimited value. *VAR is an int,
103 but its range is [0, INT_MAX]. -1 stands for unlimited and
104 other negative numbers are not allowed. */
105 var_zuinteger_unlimited,
106 /* Enumerated type. Can only have one of the specified values.
107 *VAR is a char pointer to the name of the element that we
113 /* This structure records one command'd definition. */
114 struct cmd_list_element;
116 typedef void cmd_cfunc_ftype (char *args, int from_tty);
118 /* Forward-declarations of the entry-points of cli/cli-decode.c. */
120 /* API to the manipulation of command lists. */
122 extern int valid_user_defined_cmd_name_p (const char *name);
124 extern struct cmd_list_element *add_cmd (const char *, enum command_class,
125 cmd_cfunc_ftype *fun,
127 struct cmd_list_element **);
129 extern struct cmd_list_element *add_alias_cmd (const char *, const char *,
130 enum command_class, int,
131 struct cmd_list_element **);
133 extern struct cmd_list_element *add_prefix_cmd (const char *, enum command_class,
134 cmd_cfunc_ftype *fun,
136 struct cmd_list_element **,
138 struct cmd_list_element **);
140 extern struct cmd_list_element *add_abbrev_prefix_cmd (const char *,
142 cmd_cfunc_ftype *fun,
144 struct cmd_list_element
146 struct cmd_list_element
149 /* Set the commands corresponding callback. */
151 extern void set_cmd_cfunc (struct cmd_list_element *cmd,
152 cmd_cfunc_ftype *cfunc);
154 typedef void cmd_sfunc_ftype (char *args, int from_tty,
155 struct cmd_list_element *c);
156 extern void set_cmd_sfunc (struct cmd_list_element *cmd,
157 cmd_sfunc_ftype *sfunc);
159 typedef VEC (char_ptr) *completer_ftype (struct cmd_list_element *,
160 const char *, const char *);
162 extern void set_cmd_completer (struct cmd_list_element *, completer_ftype *);
164 /* HACK: cagney/2002-02-23: Code, mostly in tracepoints.c, grubs
165 around in cmd objects to test the value of the commands sfunc(). */
166 extern int cmd_cfunc_eq (struct cmd_list_element *cmd,
167 cmd_cfunc_ftype *cfun);
169 /* Each command object has a local context attached to it. */
170 extern void set_cmd_context (struct cmd_list_element *cmd,
172 extern void *get_cmd_context (struct cmd_list_element *cmd);
175 /* Execute CMD's pre/post hook. Throw an error if the command fails.
176 If already executing this pre/post hook, or there is no pre/post
177 hook, the call is silently ignored. */
178 extern void execute_cmd_pre_hook (struct cmd_list_element *cmd);
179 extern void execute_cmd_post_hook (struct cmd_list_element *cmd);
181 /* Return the type of the command. */
182 extern enum cmd_types cmd_type (struct cmd_list_element *cmd);
184 /* Flag for an ambiguous cmd_list result. */
185 #define CMD_LIST_AMBIGUOUS ((struct cmd_list_element *) -1)
187 extern struct cmd_list_element *lookup_cmd (const char **,
188 struct cmd_list_element *, char *,
191 extern struct cmd_list_element *lookup_cmd_1 (const char **,
192 struct cmd_list_element *,
193 struct cmd_list_element **,
196 extern struct cmd_list_element *deprecate_cmd (struct cmd_list_element *,
199 extern void deprecated_cmd_warning (const char *);
201 extern int lookup_cmd_composition (const char *text,
202 struct cmd_list_element **alias,
203 struct cmd_list_element **prefix_cmd,
204 struct cmd_list_element **cmd);
206 extern struct cmd_list_element *add_com (const char *, enum command_class,
207 cmd_cfunc_ftype *fun,
210 extern struct cmd_list_element *add_com_alias (const char *, const char *,
211 enum command_class, int);
213 extern struct cmd_list_element *add_info (const char *,
214 cmd_cfunc_ftype *fun,
217 extern struct cmd_list_element *add_info_alias (const char *, char *, int);
219 extern VEC (char_ptr) *complete_on_cmdlist (struct cmd_list_element *,
220 const char *, const char *, int);
222 extern VEC (char_ptr) *complete_on_enum (const char *const *enumlist,
223 const char *, const char *);
225 /* Functions that implement commands about CLI commands. */
227 extern void help_list (struct cmd_list_element *, char *,
228 enum command_class, struct ui_file *);
230 /* Method for show a set/show variable's VALUE on FILE. If this
231 method isn't supplied deprecated_show_value_hack() is called (which
233 typedef void (show_value_ftype) (struct ui_file *file,
235 struct cmd_list_element *cmd,
237 /* NOTE: i18n: This function is not i18n friendly. Callers should
238 instead print the value out directly. */
239 extern show_value_ftype deprecated_show_value_hack;
241 extern void add_setshow_enum_cmd (const char *name,
242 enum command_class class,
243 const char *const *enumlist,
246 const char *show_doc,
247 const char *help_doc,
248 cmd_sfunc_ftype *set_func,
249 show_value_ftype *show_func,
250 struct cmd_list_element **set_list,
251 struct cmd_list_element **show_list);
253 extern void add_setshow_auto_boolean_cmd (const char *name,
254 enum command_class class,
255 enum auto_boolean *var,
257 const char *show_doc,
258 const char *help_doc,
259 cmd_sfunc_ftype *set_func,
260 show_value_ftype *show_func,
261 struct cmd_list_element **set_list,
262 struct cmd_list_element **show_list);
264 extern void add_setshow_boolean_cmd (const char *name,
265 enum command_class class,
267 const char *set_doc, const char *show_doc,
268 const char *help_doc,
269 cmd_sfunc_ftype *set_func,
270 show_value_ftype *show_func,
271 struct cmd_list_element **set_list,
272 struct cmd_list_element **show_list);
274 extern void add_setshow_filename_cmd (const char *name,
275 enum command_class class,
278 const char *show_doc,
279 const char *help_doc,
280 cmd_sfunc_ftype *set_func,
281 show_value_ftype *show_func,
282 struct cmd_list_element **set_list,
283 struct cmd_list_element **show_list);
285 extern void add_setshow_string_cmd (const char *name,
286 enum command_class class,
289 const char *show_doc,
290 const char *help_doc,
291 cmd_sfunc_ftype *set_func,
292 show_value_ftype *show_func,
293 struct cmd_list_element **set_list,
294 struct cmd_list_element **show_list);
296 extern struct cmd_list_element *add_setshow_string_noescape_cmd
298 enum command_class class,
301 const char *show_doc,
302 const char *help_doc,
303 cmd_sfunc_ftype *set_func,
304 show_value_ftype *show_func,
305 struct cmd_list_element **set_list,
306 struct cmd_list_element **show_list);
308 extern void add_setshow_optional_filename_cmd (const char *name,
309 enum command_class class,
312 const char *show_doc,
313 const char *help_doc,
314 cmd_sfunc_ftype *set_func,
315 show_value_ftype *show_func,
316 struct cmd_list_element **set_list,
317 struct cmd_list_element **show_list);
319 extern void add_setshow_integer_cmd (const char *name,
320 enum command_class class,
323 const char *show_doc,
324 const char *help_doc,
325 cmd_sfunc_ftype *set_func,
326 show_value_ftype *show_func,
327 struct cmd_list_element **set_list,
328 struct cmd_list_element **show_list);
330 extern void add_setshow_uinteger_cmd (const char *name,
331 enum command_class class,
334 const char *show_doc,
335 const char *help_doc,
336 cmd_sfunc_ftype *set_func,
337 show_value_ftype *show_func,
338 struct cmd_list_element **set_list,
339 struct cmd_list_element **show_list);
341 extern void add_setshow_zinteger_cmd (const char *name,
342 enum command_class class,
345 const char *show_doc,
346 const char *help_doc,
347 cmd_sfunc_ftype *set_func,
348 show_value_ftype *show_func,
349 struct cmd_list_element **set_list,
350 struct cmd_list_element **show_list);
352 extern void add_setshow_zuinteger_cmd (const char *name,
353 enum command_class class,
356 const char *show_doc,
357 const char *help_doc,
358 cmd_sfunc_ftype *set_func,
359 show_value_ftype *show_func,
360 struct cmd_list_element **set_list,
361 struct cmd_list_element **show_list);
364 add_setshow_zuinteger_unlimited_cmd (const char *name,
365 enum command_class class,
368 const char *show_doc,
369 const char *help_doc,
370 cmd_sfunc_ftype *set_func,
371 show_value_ftype *show_func,
372 struct cmd_list_element **set_list,
373 struct cmd_list_element **show_list);
375 /* Do a "show" command for each thing on a command list. */
377 extern void cmd_show_list (struct cmd_list_element *, int, char *);
379 /* Used everywhere whenever at least one parameter is required and
380 none is specified. */
382 extern void error_no_arg (const char *) ATTRIBUTE_NORETURN;
384 extern void dont_repeat (void);
386 extern struct cleanup *prevent_dont_repeat (void);
388 /* Used to mark commands that don't do anything. If we just leave the
389 function field NULL, the command is interpreted as a help topic, or
390 as a class of commands. */
392 extern void not_just_help_class_command (char *, int);
394 /* Check function pointer. */
395 extern int cmd_func_p (struct cmd_list_element *cmd);
397 /* Call the command function. */
398 extern void cmd_func (struct cmd_list_element *cmd,
399 char *args, int from_tty);
401 #endif /* !defined (COMMAND_H) */