/* Header file for command creation.
- Copyright (C) 1986-2014 Free Software Foundation, Inc.
+ Copyright (C) 1986-2020 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
#if !defined (COMMAND_H)
#define COMMAND_H 1
-#include "gdb_vecs.h"
+#include "gdbsupport/gdb_vecs.h"
+#include "gdbsupport/scoped_restore.h"
+
+struct completion_tracker;
/* This file defines the public interface for any code wanting to
create commands. */
/* 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. */
+ /* "on" or "off". *VAR is a bool which is true for on,
+ false for off. */
var_boolean,
/* "on" / "true" / "enable" or "off" / "false" / "disable" or
/* This structure records one command'd definition. */
struct cmd_list_element;
+typedef void cmd_const_cfunc_ftype (const char *args, int from_tty);
+
+/* This structure specifies notifications to be suppressed by a cli
+ command interpreter. */
+
+struct cli_suppress_notification
+{
+ /* Inferior, thread, frame selected notification suppressed? */
+ int user_selected_context;
+};
+
+extern struct cli_suppress_notification cli_suppress_notification;
+
/* Forward-declarations of the entry-points of cli/cli-decode.c. */
/* API to the manipulation of command lists. */
-extern int valid_user_defined_cmd_name_p (const char *name);
+/* Return TRUE if NAME is a valid user-defined command name.
+ This is a stricter subset of all gdb commands,
+ see find_command_name_length. */
+
+extern bool valid_user_defined_cmd_name_p (const char *name);
+
+/* Return TRUE if C is a valid command character. */
+
+extern bool valid_cmd_char_p (int c);
+
+/* Const-correct variant of the above. */
extern struct cmd_list_element *add_cmd (const char *, enum command_class,
- void (*fun) (char *, int), char *,
+ cmd_const_cfunc_ftype *fun,
+ const char *,
struct cmd_list_element **);
+/* Like add_cmd, but no command function is specified. */
+
+extern struct cmd_list_element *add_cmd (const char *, enum command_class,
+ const char *,
+ struct cmd_list_element **);
+
+extern struct cmd_list_element *add_cmd_suppress_notification
+ (const char *name, enum command_class theclass,
+ cmd_const_cfunc_ftype *fun, const char *doc,
+ struct cmd_list_element **list,
+ int *suppress_notification);
+
extern struct cmd_list_element *add_alias_cmd (const char *, const char *,
enum command_class, int,
struct cmd_list_element **);
+extern struct cmd_list_element *add_alias_cmd (const char *,
+ cmd_list_element *,
+ enum command_class, int,
+ struct cmd_list_element **);
+
+
extern struct cmd_list_element *add_prefix_cmd (const char *, enum command_class,
- void (*fun) (char *, int),
- char *,
+ cmd_const_cfunc_ftype *fun,
+ const char *,
struct cmd_list_element **,
- char *, int,
+ const char *, int,
struct cmd_list_element **);
+extern struct cmd_list_element *add_prefix_cmd_suppress_notification
+ (const char *name, enum command_class theclass,
+ cmd_const_cfunc_ftype *fun,
+ const char *doc, struct cmd_list_element **prefixlist,
+ const char *prefixname, int allow_unknown,
+ struct cmd_list_element **list,
+ int *suppress_notification);
+
extern struct cmd_list_element *add_abbrev_prefix_cmd (const char *,
enum command_class,
- void (*fun) (char *,
- int),
- char *,
+ cmd_const_cfunc_ftype *fun,
+ const char *,
struct cmd_list_element
- **, char *, int,
+ **, const char *, int,
struct cmd_list_element
**);
-/* Set the commands corresponding callback. */
-
-typedef void cmd_cfunc_ftype (char *args, int from_tty);
-extern void set_cmd_cfunc (struct cmd_list_element *cmd,
- cmd_cfunc_ftype *cfunc);
-
-typedef void cmd_sfunc_ftype (char *args, int from_tty,
- struct cmd_list_element *c);
+typedef void cmd_const_sfunc_ftype (const char *args, int from_tty,
+ struct cmd_list_element *c);
extern void set_cmd_sfunc (struct cmd_list_element *cmd,
- cmd_sfunc_ftype *sfunc);
-
-typedef VEC (char_ptr) *completer_ftype (struct cmd_list_element *,
- const char *, const char *);
+ cmd_const_sfunc_ftype *sfunc);
+
+/* A completion routine. Add possible completions to tracker.
+
+ 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. 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". */
+typedef void completer_ftype (struct cmd_list_element *,
+ completion_tracker &tracker,
+ const char *text, const char *word);
+
+/* Same, but for set_cmd_completer_handle_brkchars. */
+typedef void completer_handle_brkchars_ftype (struct cmd_list_element *,
+ completion_tracker &tracker,
+ const char *text, const char *word);
extern void set_cmd_completer (struct cmd_list_element *, completer_ftype *);
+/* Set the completer_handle_brkchars callback. */
+
+extern void set_cmd_completer_handle_brkchars (struct cmd_list_element *,
+ completer_handle_brkchars_ftype *);
+
/* HACK: cagney/2002-02-23: Code, mostly in tracepoints.c, grubs
around in cmd objects to test the value of the commands sfunc(). */
extern int cmd_cfunc_eq (struct cmd_list_element *cmd,
- void (*cfunc) (char *args, int from_tty));
+ cmd_const_cfunc_ftype *cfun);
/* Each command object has a local context attached to it. */
extern void set_cmd_context (struct cmd_list_element *cmd,
#define CMD_LIST_AMBIGUOUS ((struct cmd_list_element *) -1)
extern struct cmd_list_element *lookup_cmd (const char **,
- struct cmd_list_element *, char *,
+ struct cmd_list_element *,
+ const char *,
int, int);
extern struct cmd_list_element *lookup_cmd_1 (const char **,
int);
extern struct cmd_list_element *deprecate_cmd (struct cmd_list_element *,
- char * );
+ const char * );
extern void deprecated_cmd_warning (const char *);
struct cmd_list_element **cmd);
extern struct cmd_list_element *add_com (const char *, enum command_class,
- void (*fun) (char *, int),
- char *);
+ cmd_const_cfunc_ftype *fun,
+ const char *);
extern struct cmd_list_element *add_com_alias (const char *, const char *,
enum command_class, int);
+extern struct cmd_list_element *add_com_suppress_notification
+ (const char *name, enum command_class theclass,
+ cmd_const_cfunc_ftype *fun, const char *doc,
+ int *supress_notification);
+
extern struct cmd_list_element *add_info (const char *,
- void (*fun) (char *, int),
- char *);
+ cmd_const_cfunc_ftype *fun,
+ const char *);
-extern struct cmd_list_element *add_info_alias (const char *, char *, int);
+extern struct cmd_list_element *add_info_alias (const char *, const char *,
+ int);
-extern VEC (char_ptr) *complete_on_cmdlist (struct cmd_list_element *,
- const char *, const char *, int);
+extern void complete_on_cmdlist (struct cmd_list_element *,
+ completion_tracker &tracker,
+ const char *, const char *, int);
-extern VEC (char_ptr) *complete_on_enum (const char *const *enumlist,
- const char *, const char *);
+extern void complete_on_enum (completion_tracker &tracker,
+ const char *const *enumlist,
+ const char *, const char *);
/* Functions that implement commands about CLI commands. */
-extern void help_list (struct cmd_list_element *, char *,
+extern void help_list (struct cmd_list_element *, const char *,
enum command_class, struct ui_file *);
/* Method for show a set/show variable's VALUE on FILE. If this
extern show_value_ftype deprecated_show_value_hack;
extern void add_setshow_enum_cmd (const char *name,
- enum command_class class,
+ enum command_class theclass,
const char *const *enumlist,
const char **var,
const char *set_doc,
const char *show_doc,
const char *help_doc,
- cmd_sfunc_ftype *set_func,
+ cmd_const_sfunc_ftype *set_func,
show_value_ftype *show_func,
struct cmd_list_element **set_list,
- struct cmd_list_element **show_list);
+ struct cmd_list_element **show_list,
+ void *context = nullptr);
extern void add_setshow_auto_boolean_cmd (const char *name,
- enum command_class class,
+ enum command_class theclass,
enum auto_boolean *var,
const char *set_doc,
const char *show_doc,
const char *help_doc,
- cmd_sfunc_ftype *set_func,
+ cmd_const_sfunc_ftype *set_func,
show_value_ftype *show_func,
struct cmd_list_element **set_list,
struct cmd_list_element **show_list);
-extern void add_setshow_boolean_cmd (const char *name,
- enum command_class class,
- int *var,
- const char *set_doc, const char *show_doc,
- const char *help_doc,
- cmd_sfunc_ftype *set_func,
- show_value_ftype *show_func,
- struct cmd_list_element **set_list,
- struct cmd_list_element **show_list);
+extern cmd_list_element *
+ add_setshow_boolean_cmd (const char *name,
+ enum command_class theclass,
+ bool *var,
+ const char *set_doc, const char *show_doc,
+ const char *help_doc,
+ cmd_const_sfunc_ftype *set_func,
+ show_value_ftype *show_func,
+ struct cmd_list_element **set_list,
+ struct cmd_list_element **show_list);
extern void add_setshow_filename_cmd (const char *name,
- enum command_class class,
+ enum command_class theclass,
char **var,
const char *set_doc,
const char *show_doc,
const char *help_doc,
- cmd_sfunc_ftype *set_func,
+ cmd_const_sfunc_ftype *set_func,
show_value_ftype *show_func,
struct cmd_list_element **set_list,
struct cmd_list_element **show_list);
extern void add_setshow_string_cmd (const char *name,
- enum command_class class,
+ enum command_class theclass,
char **var,
const char *set_doc,
const char *show_doc,
const char *help_doc,
- cmd_sfunc_ftype *set_func,
+ cmd_const_sfunc_ftype *set_func,
show_value_ftype *show_func,
struct cmd_list_element **set_list,
struct cmd_list_element **show_list);
extern struct cmd_list_element *add_setshow_string_noescape_cmd
(const char *name,
- enum command_class class,
+ enum command_class theclass,
char **var,
const char *set_doc,
const char *show_doc,
const char *help_doc,
- cmd_sfunc_ftype *set_func,
+ cmd_const_sfunc_ftype *set_func,
show_value_ftype *show_func,
struct cmd_list_element **set_list,
struct cmd_list_element **show_list);
extern void add_setshow_optional_filename_cmd (const char *name,
- enum command_class class,
+ enum command_class theclass,
char **var,
const char *set_doc,
const char *show_doc,
const char *help_doc,
- cmd_sfunc_ftype *set_func,
+ cmd_const_sfunc_ftype *set_func,
show_value_ftype *show_func,
struct cmd_list_element **set_list,
struct cmd_list_element **show_list);
extern void add_setshow_integer_cmd (const char *name,
- enum command_class class,
+ enum command_class theclass,
int *var,
const char *set_doc,
const char *show_doc,
const char *help_doc,
- cmd_sfunc_ftype *set_func,
+ cmd_const_sfunc_ftype *set_func,
show_value_ftype *show_func,
struct cmd_list_element **set_list,
struct cmd_list_element **show_list);
extern void add_setshow_uinteger_cmd (const char *name,
- enum command_class class,
+ enum command_class theclass,
unsigned int *var,
const char *set_doc,
const char *show_doc,
const char *help_doc,
- cmd_sfunc_ftype *set_func,
+ cmd_const_sfunc_ftype *set_func,
show_value_ftype *show_func,
struct cmd_list_element **set_list,
struct cmd_list_element **show_list);
extern void add_setshow_zinteger_cmd (const char *name,
- enum command_class class,
+ enum command_class theclass,
int *var,
const char *set_doc,
const char *show_doc,
const char *help_doc,
- cmd_sfunc_ftype *set_func,
+ cmd_const_sfunc_ftype *set_func,
show_value_ftype *show_func,
struct cmd_list_element **set_list,
struct cmd_list_element **show_list);
extern void add_setshow_zuinteger_cmd (const char *name,
- enum command_class class,
+ enum command_class theclass,
unsigned int *var,
const char *set_doc,
const char *show_doc,
const char *help_doc,
- cmd_sfunc_ftype *set_func,
+ cmd_const_sfunc_ftype *set_func,
show_value_ftype *show_func,
struct cmd_list_element **set_list,
struct cmd_list_element **show_list);
extern void
add_setshow_zuinteger_unlimited_cmd (const char *name,
- enum command_class class,
+ enum command_class theclass,
int *var,
const char *set_doc,
const char *show_doc,
const char *help_doc,
- cmd_sfunc_ftype *set_func,
+ cmd_const_sfunc_ftype *set_func,
show_value_ftype *show_func,
struct cmd_list_element **set_list,
struct cmd_list_element **show_list);
/* Do a "show" command for each thing on a command list. */
-extern void cmd_show_list (struct cmd_list_element *, int, char *);
+extern void cmd_show_list (struct cmd_list_element *, int, const char *);
/* Used everywhere whenever at least one parameter is required and
none is specified. */
extern void error_no_arg (const char *) ATTRIBUTE_NORETURN;
-extern void dont_repeat (void);
-extern struct cleanup *prevent_dont_repeat (void);
+/* Command line saving and repetition.
+ Each input line executed is saved to possibly be repeated either
+ when the user types an empty line, or be repeated by a command
+ that wants to repeat the previously executed command. The below
+ functions control command repetition. */
+
+/* Commands call dont_repeat if they do not want to be repeated by null
+ lines or by repeat_previous (). */
+
+extern void dont_repeat ();
+
+/* Commands call repeat_previous if they want to repeat the previous
+ command. Such commands that repeat the previous command must
+ indicate to not repeat themselves, to avoid recursive repeat.
+ repeat_previous marks the current command as not repeating, and
+ ensures get_saved_command_line returns the previous command, so
+ that the currently executing command can repeat it. If there's no
+ previous command, throws an error. Otherwise, returns the result
+ of get_saved_command_line, which now points at the command to
+ repeat. */
+
+extern const char *repeat_previous ();
+
+/* Prevent dont_repeat from working, and return a cleanup that
+ restores the previous state. */
+
+extern scoped_restore_tmpl<int> prevent_dont_repeat (void);
+
+/* Set the arguments that will be passed if the current command is
+ repeated. Note that the passed-in string must be a constant. */
+
+extern void set_repeat_arguments (const char *args);
+
+/* Returns the saved command line to repeat.
+ When a command is being executed, this is the currently executing
+ command line, unless the currently executing command has called
+ repeat_previous (): in this case, get_saved_command_line returns
+ the previously saved command line. */
+
+extern char *get_saved_command_line ();
+
+/* Takes a copy of CMD, for possible repetition. */
+
+extern void save_command_line (const char *cmd);
/* 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);
+extern void not_just_help_class_command (const char *, int);
/* Check function pointer. */
extern int cmd_func_p (struct cmd_list_element *cmd);
/* Call the command function. */
extern void cmd_func (struct cmd_list_element *cmd,
- char *args, int from_tty);
+ const char *args, int from_tty);
#endif /* !defined (COMMAND_H) */
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