1 /* Header file for command creation.
3 Copyright (C) 1986-2016 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
145 **, const char *, int,
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 typedef void completer_ftype_void (struct cmd_list_element *,
163 const char *, const char *);
165 extern void set_cmd_completer (struct cmd_list_element *, completer_ftype *);
167 /* Set the completer_handle_brkchars callback. */
169 extern void set_cmd_completer_handle_brkchars (struct cmd_list_element *,
170 completer_ftype_void *);
172 /* HACK: cagney/2002-02-23: Code, mostly in tracepoints.c, grubs
173 around in cmd objects to test the value of the commands sfunc(). */
174 extern int cmd_cfunc_eq (struct cmd_list_element *cmd,
175 cmd_cfunc_ftype *cfun);
177 /* Each command object has a local context attached to it. */
178 extern void set_cmd_context (struct cmd_list_element *cmd,
180 extern void *get_cmd_context (struct cmd_list_element *cmd);
183 /* Execute CMD's pre/post hook. Throw an error if the command fails.
184 If already executing this pre/post hook, or there is no pre/post
185 hook, the call is silently ignored. */
186 extern void execute_cmd_pre_hook (struct cmd_list_element *cmd);
187 extern void execute_cmd_post_hook (struct cmd_list_element *cmd);
189 /* Return the type of the command. */
190 extern enum cmd_types cmd_type (struct cmd_list_element *cmd);
192 /* Flag for an ambiguous cmd_list result. */
193 #define CMD_LIST_AMBIGUOUS ((struct cmd_list_element *) -1)
195 extern struct cmd_list_element *lookup_cmd (const char **,
196 struct cmd_list_element *, char *,
199 extern struct cmd_list_element *lookup_cmd_1 (const char **,
200 struct cmd_list_element *,
201 struct cmd_list_element **,
204 extern struct cmd_list_element *deprecate_cmd (struct cmd_list_element *,
207 extern void deprecated_cmd_warning (const char *);
209 extern int lookup_cmd_composition (const char *text,
210 struct cmd_list_element **alias,
211 struct cmd_list_element **prefix_cmd,
212 struct cmd_list_element **cmd);
214 extern struct cmd_list_element *add_com (const char *, enum command_class,
215 cmd_cfunc_ftype *fun,
218 extern struct cmd_list_element *add_com_alias (const char *, const char *,
219 enum command_class, int);
221 extern struct cmd_list_element *add_info (const char *,
222 cmd_cfunc_ftype *fun,
225 extern struct cmd_list_element *add_info_alias (const char *, const char *,
228 extern VEC (char_ptr) *complete_on_cmdlist (struct cmd_list_element *,
229 const char *, const char *, int);
231 extern VEC (char_ptr) *complete_on_enum (const char *const *enumlist,
232 const char *, const char *);
234 /* Functions that implement commands about CLI commands. */
236 extern void help_list (struct cmd_list_element *, const char *,
237 enum command_class, struct ui_file *);
239 /* Method for show a set/show variable's VALUE on FILE. If this
240 method isn't supplied deprecated_show_value_hack() is called (which
242 typedef void (show_value_ftype) (struct ui_file *file,
244 struct cmd_list_element *cmd,
246 /* NOTE: i18n: This function is not i18n friendly. Callers should
247 instead print the value out directly. */
248 extern show_value_ftype deprecated_show_value_hack;
250 extern void add_setshow_enum_cmd (const char *name,
251 enum command_class theclass,
252 const char *const *enumlist,
255 const char *show_doc,
256 const char *help_doc,
257 cmd_sfunc_ftype *set_func,
258 show_value_ftype *show_func,
259 struct cmd_list_element **set_list,
260 struct cmd_list_element **show_list);
262 extern void add_setshow_auto_boolean_cmd (const char *name,
263 enum command_class theclass,
264 enum auto_boolean *var,
266 const char *show_doc,
267 const char *help_doc,
268 cmd_sfunc_ftype *set_func,
269 show_value_ftype *show_func,
270 struct cmd_list_element **set_list,
271 struct cmd_list_element **show_list);
273 extern void add_setshow_boolean_cmd (const char *name,
274 enum command_class theclass,
276 const char *set_doc, const char *show_doc,
277 const char *help_doc,
278 cmd_sfunc_ftype *set_func,
279 show_value_ftype *show_func,
280 struct cmd_list_element **set_list,
281 struct cmd_list_element **show_list);
283 extern void add_setshow_filename_cmd (const char *name,
284 enum command_class theclass,
287 const char *show_doc,
288 const char *help_doc,
289 cmd_sfunc_ftype *set_func,
290 show_value_ftype *show_func,
291 struct cmd_list_element **set_list,
292 struct cmd_list_element **show_list);
294 extern void add_setshow_string_cmd (const char *name,
295 enum command_class theclass,
298 const char *show_doc,
299 const char *help_doc,
300 cmd_sfunc_ftype *set_func,
301 show_value_ftype *show_func,
302 struct cmd_list_element **set_list,
303 struct cmd_list_element **show_list);
305 extern struct cmd_list_element *add_setshow_string_noescape_cmd
307 enum command_class theclass,
310 const char *show_doc,
311 const char *help_doc,
312 cmd_sfunc_ftype *set_func,
313 show_value_ftype *show_func,
314 struct cmd_list_element **set_list,
315 struct cmd_list_element **show_list);
317 extern void add_setshow_optional_filename_cmd (const char *name,
318 enum command_class theclass,
321 const char *show_doc,
322 const char *help_doc,
323 cmd_sfunc_ftype *set_func,
324 show_value_ftype *show_func,
325 struct cmd_list_element **set_list,
326 struct cmd_list_element **show_list);
328 extern void add_setshow_integer_cmd (const char *name,
329 enum command_class theclass,
332 const char *show_doc,
333 const char *help_doc,
334 cmd_sfunc_ftype *set_func,
335 show_value_ftype *show_func,
336 struct cmd_list_element **set_list,
337 struct cmd_list_element **show_list);
339 extern void add_setshow_uinteger_cmd (const char *name,
340 enum command_class theclass,
343 const char *show_doc,
344 const char *help_doc,
345 cmd_sfunc_ftype *set_func,
346 show_value_ftype *show_func,
347 struct cmd_list_element **set_list,
348 struct cmd_list_element **show_list);
350 extern void add_setshow_zinteger_cmd (const char *name,
351 enum command_class theclass,
354 const char *show_doc,
355 const char *help_doc,
356 cmd_sfunc_ftype *set_func,
357 show_value_ftype *show_func,
358 struct cmd_list_element **set_list,
359 struct cmd_list_element **show_list);
361 extern void add_setshow_zuinteger_cmd (const char *name,
362 enum command_class theclass,
365 const char *show_doc,
366 const char *help_doc,
367 cmd_sfunc_ftype *set_func,
368 show_value_ftype *show_func,
369 struct cmd_list_element **set_list,
370 struct cmd_list_element **show_list);
373 add_setshow_zuinteger_unlimited_cmd (const char *name,
374 enum command_class theclass,
377 const char *show_doc,
378 const char *help_doc,
379 cmd_sfunc_ftype *set_func,
380 show_value_ftype *show_func,
381 struct cmd_list_element **set_list,
382 struct cmd_list_element **show_list);
384 /* Do a "show" command for each thing on a command list. */
386 extern void cmd_show_list (struct cmd_list_element *, int, const char *);
388 /* Used everywhere whenever at least one parameter is required and
389 none is specified. */
391 extern void error_no_arg (const char *) ATTRIBUTE_NORETURN;
393 extern void dont_repeat (void);
395 extern struct cleanup *prevent_dont_repeat (void);
397 /* Used to mark commands that don't do anything. If we just leave the
398 function field NULL, the command is interpreted as a help topic, or
399 as a class of commands. */
401 extern void not_just_help_class_command (char *, int);
403 /* Check function pointer. */
404 extern int cmd_func_p (struct cmd_list_element *cmd);
406 /* Call the command function. */
407 extern void cmd_func (struct cmd_list_element *cmd,
408 char *args, int from_tty);
410 #endif /* !defined (COMMAND_H) */