1 /* Header file for command-reading library command.c.
2 Copyright (C) 1986, 1989, 1990 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, Boston, MA 02111-1307, USA. */
18 #if !defined (COMMAND_H)
21 /* Not a set/show command. Note that some commands which begin with
22 "set" or "show" might be in this category, if their syntax does
23 not fall into one of the following categories. */
24 typedef enum cmd_types {
30 /* Types of "set" or "show" command. */
31 typedef enum var_types {
32 /* "on" or "off". *VAR is an integer which is nonzero for on,
35 /* Unsigned Integer. *VAR is an unsigned int. The user can type 0
36 to mean "unlimited", which is stored in *VAR as UINT_MAX. */
39 /* Like var_uinteger but signed. *VAR is an int. The user can type 0
40 to mean "unlimited", which is stored in *VAR as INT_MAX. */
43 /* String which the user enters with escapes (e.g. the user types \n and
44 it is a real newline in the stored string).
45 *VAR is a malloc'd string, or NULL if the string is empty. */
47 /* String which stores what the user types verbatim.
48 *VAR is a malloc'd string, or NULL if the string is empty. */
50 /* String which stores a filename.
51 *VAR is a malloc'd string, or NULL if the string is empty. */
53 /* ZeroableInteger. *VAR is an int. Like Unsigned Integer except
54 that zero really means zero. */
56 /* Enumerated type. Can only have one of the specified values. *VAR is a
57 char pointer to the name of the element that we find. */
61 /* This structure records one command'd definition. */
63 struct cmd_list_element
65 /* Points to next command in this list. */
66 struct cmd_list_element *next;
68 /* Name of this command. */
71 /* Command class; class values are chosen by application program. */
72 enum command_class class;
74 /* Function definition of this command.
75 NO_FUNCTION for command class names and for help topics that
76 are not really commands. */
79 /* If type is not_set_cmd, call it like this: */
80 void (*cfunc) PARAMS ((char *args, int from_tty));
82 /* If type is cmd_set or show_cmd, first set the variables, and
84 void (*sfunc) PARAMS ((char *args, int from_tty,
85 struct cmd_list_element *c));
87 # define NO_FUNCTION ((void (*) PARAMS((char *args, int from_tty))) 0)
89 /* Documentation of this command (or help topic).
90 First line is brief documentation; remaining lines form, with it,
91 the full documentation. First line should end with a period.
92 Entire string should also end with a period, not a newline. */
95 /* Hook for another command to be executed before this command. */
96 struct cmd_list_element *hook;
98 /* Nonzero identifies a prefix command. For them, the address
99 of the variable containing the list of subcommands. */
100 struct cmd_list_element **prefixlist;
102 /* For prefix commands only:
103 String containing prefix commands to get here: this one
104 plus any others needed to get to it. Should end in a space.
105 It is used before the word "command" in describing the
106 commands reached through this prefix. */
109 /* For prefix commands only:
110 nonzero means do not get an error if subcommand is not
111 recognized; call the prefix's own function in that case. */
114 /* Nonzero says this is an abbreviation, and should not
115 be mentioned in lists of commands.
116 This allows "br<tab>" to complete to "break", which it
117 otherwise wouldn't. */
120 /* Completion routine for this command. TEXT is the text beyond
121 what was matched for the command itself (leading whitespace is
122 skipped). It stops where we are supposed to stop completing
123 (rl_point) and is '\0' terminated.
125 Return value is a malloc'd vector of pointers to possible completions
126 terminated with NULL. If there are no completions, returning a pointer
127 to a NULL would work but returning NULL itself is also valid.
128 WORD points in the same buffer as TEXT, and completions should be
129 returned relative to this position. For example, suppose TEXT is "foo"
130 and we want to complete to "foobar". If WORD is "oo", return
131 "oobar"; if WORD is "baz/foo", return "baz/foobar". */
132 char ** (*completer) PARAMS ((char *text, char *word));
134 /* Type of "set" or "show" command (or SET_NOT_SET if not "set"
138 /* Pointer to variable affected by "set" and "show". Doesn't matter
139 if type is not_set. */
142 /* What kind of variable is *VAR? */
145 /* Pointer to NULL terminated list of enumerated values (like argv). */
148 /* Pointer to command strings of user-defined commands */
149 struct command_line *user_commands;
151 /* Pointer to command that is hooked by this one,
152 so the hook can be removed when this one is deleted. */
153 struct cmd_list_element *hookee;
155 /* Pointer to command that is aliased by this one, so the
156 aliased command can be located in case it has been hooked. */
157 struct cmd_list_element *cmd_pointer;
160 /* Forward-declarations of the entry-points of command.c. */
162 extern struct cmd_list_element *
163 add_cmd PARAMS ((char *, enum command_class, void (*fun) (char *, int),
164 char *, struct cmd_list_element **));
166 extern struct cmd_list_element *
167 add_alias_cmd PARAMS ((char *, char *, enum command_class, int,
168 struct cmd_list_element **));
170 extern struct cmd_list_element *
171 add_prefix_cmd PARAMS ((char *, enum command_class, void (*fun) (char *, int),
172 char *, struct cmd_list_element **, char *, int,
173 struct cmd_list_element **));
175 extern struct cmd_list_element *
176 add_abbrev_prefix_cmd PARAMS ((char *, enum command_class,
177 void (*fun) (char *, int), char *,
178 struct cmd_list_element **, char *, int,
179 struct cmd_list_element **));
181 extern struct cmd_list_element *
182 lookup_cmd PARAMS ((char **, struct cmd_list_element *, char *, int, int));
184 extern struct cmd_list_element *
185 lookup_cmd_1 PARAMS ((char **, struct cmd_list_element *,
186 struct cmd_list_element **, int));
189 add_com PARAMS ((char *, enum command_class, void (*fun)(char *, int),
193 add_com_alias PARAMS ((char *, char *, enum command_class, int));
196 add_info PARAMS ((char *, void (*fun) (char *, int), char *));
199 add_info_alias PARAMS ((char *, char *, int));
202 complete_on_cmdlist PARAMS ((struct cmd_list_element *, char *, char *));
205 complete_on_enum PARAMS ((char **enumlist, char *, char *));
208 delete_cmd PARAMS ((char *, struct cmd_list_element **));
211 help_cmd PARAMS ((char *, GDB_FILE *));
214 help_list PARAMS ((struct cmd_list_element *, char *, enum command_class,
218 help_cmd_list PARAMS ((struct cmd_list_element *, enum command_class, char *,
221 extern struct cmd_list_element *
222 add_set_cmd PARAMS ((char *, enum command_class, var_types, char *, char *,
223 struct cmd_list_element **));
225 extern struct cmd_list_element *
226 add_set_enum_cmd PARAMS ((char *name, enum command_class, char *list[],
227 char *var, char *doc, struct cmd_list_element **c));
229 extern struct cmd_list_element *
230 add_show_from_set PARAMS ((struct cmd_list_element *,
231 struct cmd_list_element **));
233 /* Do a "set" or "show" command. ARG is NULL if no argument, or the text
234 of the argument, and FROM_TTY is nonzero if this command is being entered
235 directly by the user (i.e. these are just like any other
236 command). C is the command list element for the command. */
239 do_setshow_command PARAMS ((char *, int, struct cmd_list_element *));
241 /* Do a "show" command for each thing on a command list. */
244 cmd_show_list PARAMS ((struct cmd_list_element *, int, char *));
247 error_no_arg PARAMS ((char *));
250 dont_repeat PARAMS ((void));
252 /* Used to mark commands that don't do anything. If we just leave the
253 function field NULL, the command is interpreted as a help topic, or
254 as a class of commands. */
257 not_just_help_class_command PARAMS ((char *, int));
259 #endif /* !defined (COMMAND_H) */