[deliverable/binutils-gdb.git] / gdb / command.h

/* Header file for command-reading library command.c.
   Copyright (C) 1986, 1989, 1990, 2000 Free Software Foundation, Inc.

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 2 of the License, or
   (at your option) any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 59 Temple Place - Suite 330,
   Boston, MA 02111-1307, USA.  */

#if !defined (COMMAND_H)
#define COMMAND_H 1

/* Command classes are top-level categories into which commands are broken
   down for "help" purposes.  
   Notes on classes: class_alias is for alias commands which are not
   abbreviations of the original command.  class-pseudo is for
   commands which are not really commands nor help topics ("stop").  */

enum command_class
{
  /* Special args to help_list */
  class_deprecated, all_classes = -2, all_commands = -1,
  /* Classes of commands */
  no_class = -1, class_run = 0, class_vars, class_stack,
  class_files, class_support, class_info, class_breakpoint, class_trace,
  class_alias, class_obscure, class_user, class_maintenance,
  class_pseudo, class_tui, class_xdb
};

/* Not a set/show command.  Note that some commands which begin with
   "set" or "show" might be in this category, if their syntax does
   not fall into one of the following categories.  */
typedef enum cmd_types
  {
    not_set_cmd,
    set_cmd,
    show_cmd
  }
cmd_types;

/* Reasonable values for an AUTO_BOOLEAN variable. */
enum cmd_auto_boolean
{
  CMD_AUTO_BOOLEAN_TRUE,
  CMD_AUTO_BOOLEAN_FALSE,
  CMD_AUTO_BOOLEAN_AUTO
};

/* Types of "set" or "show" command.  */
typedef enum var_types
  {
    /* "on" or "off".  *VAR is an integer which is nonzero for on,
       zero for off.  */
    var_boolean,

    /* "on" / "true" / "enable" or "off" / "false" / "disable" or
       "auto.  *VAR is an ``enum cmd_auto_boolean''.  NOTE: In general
       a custom show command will need to be implemented - one that
       for "auto" prints both the "auto" and the current auto-selected
       value. */
    var_auto_boolean,

    /* Unsigned Integer.  *VAR is an unsigned int.  The user can type 0
       to mean "unlimited", which is stored in *VAR as UINT_MAX.  */
    var_uinteger,

    /* Like var_uinteger but signed.  *VAR is an int.  The user can type 0
       to mean "unlimited", which is stored in *VAR as INT_MAX.  */
    var_integer,

    /* String which the user enters with escapes (e.g. the user types \n and
       it is a real newline in the stored string).
       *VAR is a malloc'd string, or NULL if the string is empty.  */
    var_string,
    /* String which stores what the user types verbatim.
       *VAR is a malloc'd string, or NULL if the string is empty.  */
    var_string_noescape,
    /* String which stores a filename.
       *VAR is a malloc'd string, or NULL if the string is empty.  */
    var_filename,
    /* ZeroableInteger.  *VAR is an int.  Like Unsigned Integer except
       that zero really means zero.  */
    var_zinteger,
    /* Enumerated type.  Can only have one of the specified values.  *VAR is a
       char pointer to the name of the element that we find.  */
    var_enum
  }
var_types;

/* This structure records one command'd definition.  */


/* This flag is used by the code executing commands to warn the user 
   the first time a deprecated command is used, see the 'flags' field in
   the following struct.
*/
#define CMD_DEPRECATED            0x1
#define DEPRECATED_WARN_USER      0x2
#define MALLOCED_REPLACEMENT      0x4

struct cmd_list_element
  {
    /* Points to next command in this list.  */
    struct cmd_list_element *next;

    /* Name of this command.  */
    char *name;

    /* Command class; class values are chosen by application program.  */
    enum command_class class;

    /* Function definition of this command.
       NO_FUNCTION for command class names and for help topics that
       are not really commands.  */
    union
      {
	/* If type is not_set_cmd, call it like this:  */
	void (*cfunc) (char *args, int from_tty);

	/* If type is cmd_set or show_cmd, first set the variables, and
	   then call this.  */
	void (*sfunc) (char *args, int from_tty, struct cmd_list_element * c);
      }
    function;
#define NO_FUNCTION ((void (*) (char *args, int from_tty)) 0)

    /* Documentation of this command (or help topic).
       First line is brief documentation; remaining lines form, with it,
       the full documentation.  First line should end with a period.
       Entire string should also end with a period, not a newline.  */
    char *doc;

    /* flags : a bitfield 
       
       bit 0: (LSB) CMD_DEPRECATED, when 1 indicated that this command
       is deprecated. It may be removed from gdb's command set in the
       future.

       bit 1: DEPRECATED_WARN_USER, the user needs to be warned that
       this is a deprecated command.  The user should only be warned
       the first time a command is used.
        
       bit 2: MALLOCED_REPLACEMENT, when functions are deprecated at
       compile time (this is the way it should, in general, be done)
       the memory containing the replacement string is statically
       allocated.  In some cases it makes sense to deprecate commands
       at runtime (the testsuite is one example).  In this case the
       memory for replacement is malloc'ed.  When a command is
       undeprecated or re-deprecated at runtime we don't want to risk
       calling free on statically allocated memory, so we check this
       flag.  
     */
    int flags;

    /* if this command is deprecated, this is the replacement name */
    char *replacement;

    /* Hook for another command to be executed before this command.  */
    struct cmd_list_element *hook_pre;

    /* Hook for another command to be executed after this command.  */
    struct cmd_list_element *hook_post;

    /* Flag that specifies if this command is already running it's hook. */
    /* Prevents the possibility of hook recursion. */
    int hook_in;

    /* Nonzero identifies a prefix command.  For them, the address
       of the variable containing the list of subcommands.  */
    struct cmd_list_element **prefixlist;

    /* For prefix commands only:
       String containing prefix commands to get here: this one
       plus any others needed to get to it.  Should end in a space.
       It is used before the word "command" in describing the
       commands reached through this prefix.  */
    char *prefixname;

    /* For prefix commands only:
       nonzero means do not get an error if subcommand is not
       recognized; call the prefix's own function in that case.  */
    char allow_unknown;

    /* Nonzero says this is an abbreviation, and should not
       be mentioned in lists of commands.
       This allows "br<tab>" to complete to "break", which it
       otherwise wouldn't.  */
    char abbrev_flag;

    /* Completion routine for this command.  TEXT is the text beyond
       what was matched for the command itself (leading whitespace is
       skipped).  It stops where we are supposed to stop completing
       (rl_point) and is '\0' terminated.

       Return value is a malloc'd vector of pointers to possible completions
       terminated with NULL.  If there are no completions, returning a pointer
       to a NULL would work but returning NULL itself is also valid.
       WORD points in the same buffer as TEXT, and completions should be
       returned relative to this position.  For example, suppose TEXT is "foo"
       and we want to complete to "foobar".  If WORD is "oo", return
       "oobar"; if WORD is "baz/foo", return "baz/foobar".  */
    char **(*completer) (char *text, char *word);

    /* Type of "set" or "show" command (or SET_NOT_SET if not "set"
       or "show").  */
    cmd_types type;

    /* Pointer to variable affected by "set" and "show".  Doesn't matter
       if type is not_set.  */
    void *var;

    /* What kind of variable is *VAR?  */
    var_types var_type;

    /* Pointer to NULL terminated list of enumerated values (like argv).  */
    const char **enums;

    /* Pointer to command strings of user-defined commands */
    struct command_line *user_commands;

    /* Pointer to command that is hooked by this one, (by hook_pre)
       so the hook can be removed when this one is deleted.  */
    struct cmd_list_element *hookee_pre;

    /* Pointer to command that is hooked by this one, (by hook_post)
       so the hook can be removed when this one is deleted.  */
    struct cmd_list_element *hookee_post;

    /* Pointer to command that is aliased by this one, so the
       aliased command can be located in case it has been hooked.  */
    struct cmd_list_element *cmd_pointer;
  };

/* Forward-declarations of the entry-points of command.c.  */

extern struct cmd_list_element *add_cmd (char *, enum command_class,
					 void (*fun) (char *, int), char *,
					 struct cmd_list_element **);

extern struct cmd_list_element *add_alias_cmd (char *, char *,
					       enum command_class, int,
					       struct cmd_list_element **);

extern struct cmd_list_element *add_prefix_cmd (char *, enum command_class,
						void (*fun) (char *, int),
						char *,
						struct cmd_list_element **,
						char *, int,
						struct cmd_list_element **);

extern struct cmd_list_element *add_abbrev_prefix_cmd (char *,
						       enum command_class,
						       void (*fun) (char *,
								    int),
						       char *,
						       struct cmd_list_element
						       **, char *, int,
						       struct cmd_list_element
						       **);

extern struct cmd_list_element *lookup_cmd (char **,
					    struct cmd_list_element *, char *,
					    int, int);

extern struct cmd_list_element *lookup_cmd_1 (char **,
					      struct cmd_list_element *,
					      struct cmd_list_element **,
					      int);

extern struct cmd_list_element *
  deprecate_cmd (struct cmd_list_element *, char * );

extern void
  deprecated_cmd_warning (char **);

extern int
  lookup_cmd_composition (char *text,
                        struct cmd_list_element **alias,
                        struct cmd_list_element **prefix_cmd,
                        struct cmd_list_element **cmd);

extern struct cmd_list_element *add_com (char *, enum command_class,
					 void (*fun) (char *, int), char *);

extern struct cmd_list_element *add_com_alias (char *, char *,
					       enum command_class, int);

extern struct cmd_list_element *add_info (char *, void (*fun) (char *, int),
					  char *);

extern struct cmd_list_element *add_info_alias (char *, char *, int);

extern char **complete_on_cmdlist (struct cmd_list_element *, char *, char *);

extern char **complete_on_enum (const char *enumlist[], char *, char *);

extern void delete_cmd (char *, struct cmd_list_element **);

extern void help_cmd (char *, struct ui_file *);

extern void help_list (struct cmd_list_element *, char *,
		       enum command_class, struct ui_file *);

extern void help_cmd_list (struct cmd_list_element *, enum command_class,
			   char *, int, struct ui_file *);

extern struct cmd_list_element *add_set_cmd (char *name, enum
					     command_class class,
					     var_types var_type, void *var,
					     char *doc,
					     struct cmd_list_element **list);

extern struct cmd_list_element *add_set_enum_cmd (char *name,
						  enum command_class class,
						  const char *enumlist[],
						  const char **var,
						  char *doc,
						  struct cmd_list_element **list);

extern struct cmd_list_element *add_set_auto_boolean_cmd (char *name,
							  enum command_class class,
							  enum cmd_auto_boolean *var,
							  char *doc,
							  struct cmd_list_element **list);

extern struct cmd_list_element *add_show_from_set (struct cmd_list_element *,
						   struct cmd_list_element
						   **);

/* Do a "set" or "show" command.  ARG is NULL if no argument, or the text
   of the argument, and FROM_TTY is nonzero if this command is being entered
   directly by the user (i.e. these are just like any other
   command).  C is the command list element for the command.  */

extern void do_setshow_command (char *, int, struct cmd_list_element *);

/* Do a "show" command for each thing on a command list.  */

extern void cmd_show_list (struct cmd_list_element *, int, char *);

extern void error_no_arg (char *);

extern void dont_repeat (void);

/* Used to mark commands that don't do anything.  If we just leave the
   function field NULL, the command is interpreted as a help topic, or
   as a class of commands.  */

extern void not_just_help_class_command (char *, int);

#endif /* !defined (COMMAND_H) */
Commit	Line	Data
c906108c	1	/* Header file for command-reading library command.c.
d9fcf2fb	2	Copyright (C) 1986, 1989, 1990, 2000 Free Software Foundation, Inc.
c906108c	3
c5aa993b JM	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.
c906108c	8
c5aa993b JM	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.
c906108c	13
c5aa993b JM	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. */
c906108c SS	18
	19	#if !defined (COMMAND_H)
	20	#define COMMAND_H 1
	21
6426a772 JM	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"). */
	27
	28	enum command_class
	29	{
	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,
9285ab80	36	class_pseudo, class_tui, class_xdb
6426a772 JM	37	};
6426a772 JM	38
c906108c SS	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. */
c5aa993b JM	42	typedef enum cmd_types
	43	{
	44	not_set_cmd,
	45	set_cmd,
	46	show_cmd
	47	}
	48	cmd_types;
c906108c	49
97c3646f AC	50	/* Reasonable values for an AUTO_BOOLEAN variable. */
	51	enum cmd_auto_boolean
	52	{
	53	CMD_AUTO_BOOLEAN_TRUE,
	54	CMD_AUTO_BOOLEAN_FALSE,
	55	CMD_AUTO_BOOLEAN_AUTO
	56	};
	57
c906108c	58	/* Types of "set" or "show" command. */
c5aa993b JM	59	typedef enum var_types
	60	{
	61	/* "on" or "off". *VAR is an integer which is nonzero for on,
	62	zero for off. */
	63	var_boolean,
97c3646f AC	64
	65	/* "on" / "true" / "enable" or "off" / "false" / "disable" or
	66	"auto. *VAR is an ``enum cmd_auto_boolean''. NOTE: In general
	67	a custom show command will need to be implemented - one that
	68	for "auto" prints both the "auto" and the current auto-selected
	69	value. */
	70	var_auto_boolean,
	71
c5aa993b JM	72	/* Unsigned Integer. *VAR is an unsigned int. The user can type 0
	73	to mean "unlimited", which is stored in VAR as UINT_MAX. /
	74	var_uinteger,
	75
	76	/* Like var_uinteger but signed. *VAR is an int. The user can type 0
	77	to mean "unlimited", which is stored in VAR as INT_MAX. /
	78	var_integer,
	79
	80	/* String which the user enters with escapes (e.g. the user types \n and
	81	it is a real newline in the stored string).
	82	VAR is a malloc'd string, or NULL if the string is empty. /
	83	var_string,
	84	/* String which stores what the user types verbatim.
	85	VAR is a malloc'd string, or NULL if the string is empty. /
	86	var_string_noescape,
	87	/* String which stores a filename.
	88	VAR is a malloc'd string, or NULL if the string is empty. /
	89	var_filename,
	90	/* ZeroableInteger. *VAR is an int. Like Unsigned Integer except
	91	that zero really means zero. */
	92	var_zinteger,
	93	/* Enumerated type. Can only have one of the specified values. *VAR is a
	94	char pointer to the name of the element that we find. */
	95	var_enum
	96	}
	97	var_types;
c906108c SS	98
	99	/* This structure records one command'd definition. */
	100
56382845 FN	101
	102	/* This flag is used by the code executing commands to warn the user
	103	the first time a deprecated command is used, see the 'flags' field in
	104	the following struct.
	105	*/
	106	#define CMD_DEPRECATED 0x1
	107	#define DEPRECATED_WARN_USER 0x2
	108	#define MALLOCED_REPLACEMENT 0x4
	109
c906108c SS	110	struct cmd_list_element
	111	{
	112	/* Points to next command in this list. */
	113	struct cmd_list_element *next;
	114
	115	/* Name of this command. */
	116	char *name;
	117
	118	/* Command class; class values are chosen by application program. */
	119	enum command_class class;
	120
	121	/* Function definition of this command.
	122	NO_FUNCTION for command class names and for help topics that
	123	are not really commands. */
	124	union
	125	{
	126	/* If type is not_set_cmd, call it like this: */
507f3c78	127	void (cfunc) (char args, int from_tty);
c906108c SS	128
	129	/* If type is cmd_set or show_cmd, first set the variables, and
	130	then call this. */
507f3c78	131	void (sfunc) (char args, int from_tty, struct cmd_list_element * c);
c5aa993b JM	132	}
c5aa993b JM	133	function;
dee8b1a1	134	#define NO_FUNCTION ((void () (char args, int from_tty)) 0)
c906108c SS	135
	136	/* Documentation of this command (or help topic).
	137	First line is brief documentation; remaining lines form, with it,
	138	the full documentation. First line should end with a period.
	139	Entire string should also end with a period, not a newline. */
	140	char *doc;
	141
56382845 FN	142	/* flags : a bitfield
	143
	144	bit 0: (LSB) CMD_DEPRECATED, when 1 indicated that this command
	145	is deprecated. It may be removed from gdb's command set in the
	146	future.
	147
	148	bit 1: DEPRECATED_WARN_USER, the user needs to be warned that
	149	this is a deprecated command. The user should only be warned
	150	the first time a command is used.
	151
	152	bit 2: MALLOCED_REPLACEMENT, when functions are deprecated at
	153	compile time (this is the way it should, in general, be done)
c0c9b0b8	154	the memory containing the replacement string is statically
56382845 FN	155	allocated. In some cases it makes sense to deprecate commands
	156	at runtime (the testsuite is one example). In this case the
	157	memory for replacement is malloc'ed. When a command is
	158	undeprecated or re-deprecated at runtime we don't want to risk
	159	calling free on statically allocated memory, so we check this
	160	flag.
	161	*/
	162	int flags;
	163
	164	/* if this command is deprecated, this is the replacement name */
	165	char *replacement;
	166
c906108c	167	/* Hook for another command to be executed before this command. */
73bc900d FN	168	struct cmd_list_element *hook_pre;
	169
	170	/* Hook for another command to be executed after this command. */
	171	struct cmd_list_element *hook_post;
	172
	173	/* Flag that specifies if this command is already running it's hook. */
	174	/* Prevents the possibility of hook recursion. */
	175	int hook_in;
c906108c SS	176
	177	/* Nonzero identifies a prefix command. For them, the address
	178	of the variable containing the list of subcommands. */
	179	struct cmd_list_element **prefixlist;
	180
	181	/* For prefix commands only:
	182	String containing prefix commands to get here: this one
	183	plus any others needed to get to it. Should end in a space.
	184	It is used before the word "command" in describing the
	185	commands reached through this prefix. */
	186	char *prefixname;
	187
	188	/* For prefix commands only:
	189	nonzero means do not get an error if subcommand is not
	190	recognized; call the prefix's own function in that case. */
	191	char allow_unknown;
	192
	193	/* Nonzero says this is an abbreviation, and should not
	194	be mentioned in lists of commands.
	195	This allows "br<tab>" to complete to "break", which it
	196	otherwise wouldn't. */
	197	char abbrev_flag;
	198
	199	/* Completion routine for this command. TEXT is the text beyond
	200	what was matched for the command itself (leading whitespace is
	201	skipped). It stops where we are supposed to stop completing
	202	(rl_point) and is '\0' terminated.
	203
	204	Return value is a malloc'd vector of pointers to possible completions
	205	terminated with NULL. If there are no completions, returning a pointer
	206	to a NULL would work but returning NULL itself is also valid.
	207	WORD points in the same buffer as TEXT, and completions should be
	208	returned relative to this position. For example, suppose TEXT is "foo"
	209	and we want to complete to "foobar". If WORD is "oo", return
	210	"oobar"; if WORD is "baz/foo", return "baz/foobar". */
507f3c78	211	char *(completer) (char text, char word);
c906108c SS	212
	213	/* Type of "set" or "show" command (or SET_NOT_SET if not "set"
	214	or "show"). */
	215	cmd_types type;
	216
	217	/* Pointer to variable affected by "set" and "show". Doesn't matter
	218	if type is not_set. */
1ed2a135	219	void *var;
c906108c SS	220
	221	/* What kind of variable is VAR? /
	222	var_types var_type;
	223
	224	/* Pointer to NULL terminated list of enumerated values (like argv). */
53904c9e	225	const char **enums;
c906108c SS	226
	227	/* Pointer to command strings of user-defined commands */
	228	struct command_line *user_commands;
	229
73bc900d FN	230	/* Pointer to command that is hooked by this one, (by hook_pre)
	231	so the hook can be removed when this one is deleted. */
	232	struct cmd_list_element *hookee_pre;
	233
	234	/* Pointer to command that is hooked by this one, (by hook_post)
c906108c	235	so the hook can be removed when this one is deleted. */
73bc900d	236	struct cmd_list_element *hookee_post;
c906108c SS	237
	238	/* Pointer to command that is aliased by this one, so the
	239	aliased command can be located in case it has been hooked. */
	240	struct cmd_list_element *cmd_pointer;
	241	};
	242
	243	/* Forward-declarations of the entry-points of command.c. */
	244
a14ed312 KB	245	extern struct cmd_list_element add_cmd (char , enum command_class,
	246	void (fun) (char , int), char *,
	247	struct cmd_list_element **);
	248
	249	extern struct cmd_list_element add_alias_cmd (char , char *,
	250	enum command_class, int,
	251	struct cmd_list_element **);
	252
	253	extern struct cmd_list_element add_prefix_cmd (char , enum command_class,
	254	void (fun) (char , int),
	255	char *,
	256	struct cmd_list_element **,
	257	char *, int,
	258	struct cmd_list_element **);
	259
	260	extern struct cmd_list_element add_abbrev_prefix_cmd (char ,
	261	enum command_class,
	262	void (fun) (char ,
	263	int),
	264	char *,
	265	struct cmd_list_element
	266	*, char , int,
	267	struct cmd_list_element
	268	**);
	269
	270	extern struct cmd_list_element lookup_cmd (char *,
	271	struct cmd_list_element , char ,
	272	int, int);
	273
	274	extern struct cmd_list_element lookup_cmd_1 (char *,
	275	struct cmd_list_element *,
	276	struct cmd_list_element **,
	277	int);
c906108c	278
56382845 FN	279	extern struct cmd_list_element *
	280	deprecate_cmd (struct cmd_list_element , char );
	281
c906108c	282	extern void
56382845 FN	283	deprecated_cmd_warning (char **);
	284
	285	extern int
	286	lookup_cmd_composition (char *text,
	287	struct cmd_list_element **alias,
	288	struct cmd_list_element **prefix_cmd,
	289	struct cmd_list_element **cmd);
	290
a14ed312 KB	291	extern struct cmd_list_element add_com (char , enum command_class,
a14ed312 KB	292	void (fun) (char , int), char *);
c906108c	293
a14ed312 KB	294	extern struct cmd_list_element add_com_alias (char , char *,
a14ed312 KB	295	enum command_class, int);
c906108c	296
a14ed312 KB	297	extern struct cmd_list_element add_info (char , void (fun) (char , int),
a14ed312 KB	298	char *);
c906108c	299
a14ed312	300	extern struct cmd_list_element add_info_alias (char , char *, int);
c906108c	301
a14ed312	302	extern char *complete_on_cmdlist (struct cmd_list_element , char , char );
c906108c	303
53904c9e	304	extern char *complete_on_enum (const char enumlist[], char , char );
c906108c	305
a14ed312	306	extern void delete_cmd (char , struct cmd_list_element *);
c906108c	307
d9fcf2fb	308	extern void help_cmd (char , struct ui_file );
c906108c	309
d9fcf2fb JM	310	extern void help_list (struct cmd_list_element , char ,
d9fcf2fb JM	311	enum command_class, struct ui_file *);
c906108c	312
d9fcf2fb JM	313	extern void help_cmd_list (struct cmd_list_element *, enum command_class,
d9fcf2fb JM	314	char , int, struct ui_file );
c906108c	315
1ed2a135 AC	316	extern struct cmd_list_element add_set_cmd (char name, enum
	317	command_class class,
	318	var_types var_type, void *var,
	319	char *doc,
	320	struct cmd_list_element **list);
	321
	322	extern struct cmd_list_element add_set_enum_cmd (char name,
	323	enum command_class class,
53904c9e AC	324	const char *enumlist[],
53904c9e AC	325	const char **var,
1ed2a135 AC	326	char *doc,
1ed2a135 AC	327	struct cmd_list_element **list);
c906108c	328
97c3646f AC	329	extern struct cmd_list_element add_set_auto_boolean_cmd (char name,
	330	enum command_class class,
	331	enum cmd_auto_boolean *var,
	332	char *doc,
	333	struct cmd_list_element **list);
	334
a14ed312 KB	335	extern struct cmd_list_element add_show_from_set (struct cmd_list_element ,
	336	struct cmd_list_element
	337	**);
c906108c SS	338
	339	/* Do a "set" or "show" command. ARG is NULL if no argument, or the text
	340	of the argument, and FROM_TTY is nonzero if this command is being entered
	341	directly by the user (i.e. these are just like any other
	342	command). C is the command list element for the command. */
	343
a14ed312	344	extern void do_setshow_command (char , int, struct cmd_list_element );
c906108c SS	345
	346	/* Do a "show" command for each thing on a command list. */
	347
a14ed312	348	extern void cmd_show_list (struct cmd_list_element , int, char );
c906108c	349
a14ed312	350	extern void error_no_arg (char *);
c906108c	351
a14ed312	352	extern void dont_repeat (void);
c906108c SS	353
	354	/* Used to mark commands that don't do anything. If we just leave the
	355	function field NULL, the command is interpreted as a help topic, or
	356	as a class of commands. */
	357
a14ed312	358	extern void not_just_help_class_command (char *, int);
c906108c SS	359
c906108c SS	360	#endif /* !defined (COMMAND_H) */