1 /* Header file for command creation.
3 Copyright (C) 1986-2017 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)
22 #include "common/scoped_restore.h"
24 /* This file defines the public interface for any code wanting to
27 /* Command classes are top-level categories into which commands are
28 broken down for "help" purposes.
30 Notes on classes: class_alias is for alias commands which are not
31 abbreviations of the original command. class-pseudo is for
32 commands which are not really commands nor help topics ("stop"). */
36 /* Special args to help_list */
37 class_deprecated = -3, all_classes = -2, all_commands = -1,
38 /* Classes of commands */
39 no_class = -1, class_run = 0, class_vars, class_stack, class_files,
40 class_support, class_info, class_breakpoint, class_trace,
41 class_alias, class_bookmark, class_obscure, class_maintenance,
42 class_pseudo, class_tui, class_user, class_xdb,
43 no_set_class /* Used for "show" commands that have no corresponding
47 /* FIXME: cagney/2002-03-17: Once cmd_type() has been removed, ``enum
48 cmd_types'' can be moved from "command.h" to "cli-decode.h". */
49 /* Not a set/show command. Note that some commands which begin with
50 "set" or "show" might be in this category, if their syntax does
51 not fall into one of the following categories. */
52 typedef enum cmd_types
60 /* Types of "set" or "show" command. */
61 typedef enum var_types
63 /* "on" or "off". *VAR is an integer which is nonzero for on,
67 /* "on" / "true" / "enable" or "off" / "false" / "disable" or
68 "auto. *VAR is an ``enum auto_boolean''. NOTE: In general a
69 custom show command will need to be implemented - one that for
70 "auto" prints both the "auto" and the current auto-selected
74 /* Unsigned Integer. *VAR is an unsigned int. The user can type
75 0 to mean "unlimited", which is stored in *VAR as UINT_MAX. */
78 /* Like var_uinteger but signed. *VAR is an int. The user can
79 type 0 to mean "unlimited", which is stored in *VAR as
80 INT_MAX. The only remaining use of it is the Python API.
81 Don't use it elsewhere. */
84 /* String which the user enters with escapes (e.g. the user types
85 \n and it is a real newline in the stored string).
86 *VAR is a malloc'd string, or NULL if the string is empty. */
88 /* String which stores what the user types verbatim.
89 *VAR is a malloc'd string, or NULL if the string is empty. */
91 /* String which stores a filename. (*VAR) is a malloc'd string,
92 or "" if the string was empty. */
93 var_optional_filename,
94 /* String which stores a filename. (*VAR) is a malloc'd
97 /* ZeroableInteger. *VAR is an int. Like var_integer except
98 that zero really means zero. */
100 /* ZeroableUnsignedInteger. *VAR is an unsigned int. Zero really
103 /* ZeroableUnsignedInteger with unlimited value. *VAR is an int,
104 but its range is [0, INT_MAX]. -1 stands for unlimited and
105 other negative numbers are not allowed. */
106 var_zuinteger_unlimited,
107 /* Enumerated type. Can only have one of the specified values.
108 *VAR is a char pointer to the name of the element that we
114 /* This structure records one command'd definition. */
115 struct cmd_list_element;
117 typedef void cmd_cfunc_ftype (char *args, int from_tty);
119 /* This structure specifies notifications to be suppressed by a cli
120 command interpreter. */
122 struct cli_suppress_notification
124 /* Inferior, thread, frame selected notification suppressed? */
125 int user_selected_context;
128 extern struct cli_suppress_notification cli_suppress_notification;
130 /* Forward-declarations of the entry-points of cli/cli-decode.c. */
132 /* API to the manipulation of command lists. */
134 extern int valid_user_defined_cmd_name_p (const char *name);
136 extern struct cmd_list_element *add_cmd (const char *, enum command_class,
137 cmd_cfunc_ftype *fun,
139 struct cmd_list_element **);
141 extern struct cmd_list_element *add_alias_cmd (const char *, const char *,
142 enum command_class, int,
143 struct cmd_list_element **);
145 extern struct cmd_list_element *add_alias_cmd (const char *,
147 enum command_class, int,
148 struct cmd_list_element **);
151 extern struct cmd_list_element *add_prefix_cmd (const char *, enum command_class,
152 cmd_cfunc_ftype *fun,
154 struct cmd_list_element **,
156 struct cmd_list_element **);
158 extern struct cmd_list_element *add_abbrev_prefix_cmd (const char *,
160 cmd_cfunc_ftype *fun,
162 struct cmd_list_element
163 **, const char *, int,
164 struct cmd_list_element
167 /* Set the commands corresponding callback. */
169 extern void set_cmd_cfunc (struct cmd_list_element *cmd,
170 cmd_cfunc_ftype *cfunc);
172 typedef void cmd_sfunc_ftype (char *args, int from_tty,
173 struct cmd_list_element *c);
174 extern void set_cmd_sfunc (struct cmd_list_element *cmd,
175 cmd_sfunc_ftype *sfunc);
177 typedef VEC (char_ptr) *completer_ftype (struct cmd_list_element *,
178 const char *, const char *);
180 typedef void completer_ftype_void (struct cmd_list_element *,
181 const char *, const char *);
183 extern void set_cmd_completer (struct cmd_list_element *, completer_ftype *);
185 /* Set the completer_handle_brkchars callback. */
187 extern void set_cmd_completer_handle_brkchars (struct cmd_list_element *,
188 completer_ftype_void *);
190 /* HACK: cagney/2002-02-23: Code, mostly in tracepoints.c, grubs
191 around in cmd objects to test the value of the commands sfunc(). */
192 extern int cmd_cfunc_eq (struct cmd_list_element *cmd,
193 cmd_cfunc_ftype *cfun);
195 /* Each command object has a local context attached to it. */
196 extern void set_cmd_context (struct cmd_list_element *cmd,
198 extern void *get_cmd_context (struct cmd_list_element *cmd);
201 /* Execute CMD's pre/post hook. Throw an error if the command fails.
202 If already executing this pre/post hook, or there is no pre/post
203 hook, the call is silently ignored. */
204 extern void execute_cmd_pre_hook (struct cmd_list_element *cmd);
205 extern void execute_cmd_post_hook (struct cmd_list_element *cmd);
207 /* Return the type of the command. */
208 extern enum cmd_types cmd_type (struct cmd_list_element *cmd);
210 /* Flag for an ambiguous cmd_list result. */
211 #define CMD_LIST_AMBIGUOUS ((struct cmd_list_element *) -1)
213 extern struct cmd_list_element *lookup_cmd (const char **,
214 struct cmd_list_element *,
218 extern struct cmd_list_element *lookup_cmd_1 (const char **,
219 struct cmd_list_element *,
220 struct cmd_list_element **,
223 extern struct cmd_list_element *deprecate_cmd (struct cmd_list_element *,
226 extern void deprecated_cmd_warning (const char *);
228 extern int lookup_cmd_composition (const char *text,
229 struct cmd_list_element **alias,
230 struct cmd_list_element **prefix_cmd,
231 struct cmd_list_element **cmd);
233 extern struct cmd_list_element *add_com (const char *, enum command_class,
234 cmd_cfunc_ftype *fun,
237 extern struct cmd_list_element *add_com_alias (const char *, const char *,
238 enum command_class, int);
240 extern struct cmd_list_element *add_com_suppress_notification
241 (const char *name, enum command_class theclass,
242 cmd_cfunc_ftype *fun, const char *doc,
243 int *supress_notification);
245 extern struct cmd_list_element *add_info (const char *,
246 cmd_cfunc_ftype *fun,
249 extern struct cmd_list_element *add_info_alias (const char *, const char *,
252 extern VEC (char_ptr) *complete_on_cmdlist (struct cmd_list_element *,
253 const char *, const char *, int);
255 extern VEC (char_ptr) *complete_on_enum (const char *const *enumlist,
256 const char *, const char *);
258 /* Functions that implement commands about CLI commands. */
260 extern void help_list (struct cmd_list_element *, const char *,
261 enum command_class, struct ui_file *);
263 /* Method for show a set/show variable's VALUE on FILE. If this
264 method isn't supplied deprecated_show_value_hack() is called (which
266 typedef void (show_value_ftype) (struct ui_file *file,
268 struct cmd_list_element *cmd,
270 /* NOTE: i18n: This function is not i18n friendly. Callers should
271 instead print the value out directly. */
272 extern show_value_ftype deprecated_show_value_hack;
274 extern void add_setshow_enum_cmd (const char *name,
275 enum command_class theclass,
276 const char *const *enumlist,
279 const char *show_doc,
280 const char *help_doc,
281 cmd_sfunc_ftype *set_func,
282 show_value_ftype *show_func,
283 struct cmd_list_element **set_list,
284 struct cmd_list_element **show_list);
286 extern void add_setshow_auto_boolean_cmd (const char *name,
287 enum command_class theclass,
288 enum auto_boolean *var,
290 const char *show_doc,
291 const char *help_doc,
292 cmd_sfunc_ftype *set_func,
293 show_value_ftype *show_func,
294 struct cmd_list_element **set_list,
295 struct cmd_list_element **show_list);
297 extern void add_setshow_boolean_cmd (const char *name,
298 enum command_class theclass,
300 const char *set_doc, const char *show_doc,
301 const char *help_doc,
302 cmd_sfunc_ftype *set_func,
303 show_value_ftype *show_func,
304 struct cmd_list_element **set_list,
305 struct cmd_list_element **show_list);
307 extern void add_setshow_filename_cmd (const char *name,
308 enum command_class theclass,
311 const char *show_doc,
312 const char *help_doc,
313 cmd_sfunc_ftype *set_func,
314 show_value_ftype *show_func,
315 struct cmd_list_element **set_list,
316 struct cmd_list_element **show_list);
318 extern void add_setshow_string_cmd (const char *name,
319 enum command_class theclass,
322 const char *show_doc,
323 const char *help_doc,
324 cmd_sfunc_ftype *set_func,
325 show_value_ftype *show_func,
326 struct cmd_list_element **set_list,
327 struct cmd_list_element **show_list);
329 extern struct cmd_list_element *add_setshow_string_noescape_cmd
331 enum command_class theclass,
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_optional_filename_cmd (const char *name,
342 enum command_class theclass,
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_integer_cmd (const char *name,
353 enum command_class theclass,
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);
363 extern void add_setshow_uinteger_cmd (const char *name,
364 enum command_class theclass,
367 const char *show_doc,
368 const char *help_doc,
369 cmd_sfunc_ftype *set_func,
370 show_value_ftype *show_func,
371 struct cmd_list_element **set_list,
372 struct cmd_list_element **show_list);
374 extern void add_setshow_zinteger_cmd (const char *name,
375 enum command_class theclass,
378 const char *show_doc,
379 const char *help_doc,
380 cmd_sfunc_ftype *set_func,
381 show_value_ftype *show_func,
382 struct cmd_list_element **set_list,
383 struct cmd_list_element **show_list);
385 extern void add_setshow_zuinteger_cmd (const char *name,
386 enum command_class theclass,
389 const char *show_doc,
390 const char *help_doc,
391 cmd_sfunc_ftype *set_func,
392 show_value_ftype *show_func,
393 struct cmd_list_element **set_list,
394 struct cmd_list_element **show_list);
397 add_setshow_zuinteger_unlimited_cmd (const char *name,
398 enum command_class theclass,
401 const char *show_doc,
402 const char *help_doc,
403 cmd_sfunc_ftype *set_func,
404 show_value_ftype *show_func,
405 struct cmd_list_element **set_list,
406 struct cmd_list_element **show_list);
408 /* Do a "show" command for each thing on a command list. */
410 extern void cmd_show_list (struct cmd_list_element *, int, const char *);
412 /* Used everywhere whenever at least one parameter is required and
413 none is specified. */
415 extern void error_no_arg (const char *) ATTRIBUTE_NORETURN;
417 extern void dont_repeat (void);
419 extern scoped_restore_tmpl<int> prevent_dont_repeat (void);
421 /* Used to mark commands that don't do anything. If we just leave the
422 function field NULL, the command is interpreted as a help topic, or
423 as a class of commands. */
425 extern void not_just_help_class_command (char *, int);
427 /* Check function pointer. */
428 extern int cmd_func_p (struct cmd_list_element *cmd);
430 /* Call the command function. */
431 extern void cmd_func (struct cmd_list_element *cmd,
432 char *args, int from_tty);
434 #endif /* !defined (COMMAND_H) */