/* Header file for command-reading library command.c.
- Copyright (C) 1986, 1989 Free Software Foundation, Inc.
+ 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 1, or (at your option)
- any later version.
+ 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
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., 675 Mass Ave, Cambridge, MA 02139, USA. */
+ 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;
+
+/* 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,
+ /* 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. */
char *name;
/* Command class; class values are chosen by application program. */
- int class;
+ enum command_class class;
/* Function definition of this command.
- Zero for command class names and for help topics that
+ NO_FUNCTION for command class names and for help topics that
are not really commands. */
- void (*function) ();
+ union
+ {
+ /* If type is not_set_cmd, call it like this: */
+ void (*cfunc) PARAMS ((char *args, int from_tty));
+
+ /* If type is cmd_set or show_cmd, first set the variables, and
+ then call this. */
+ void (*sfunc) PARAMS ((char *args, int from_tty,
+ struct cmd_list_element * c));
+ }
+ function;
+#define NO_FUNCTION ((void (*) PARAMS((char *args, int from_tty))) 0)
/* Documentation of this command (or help topic).
First line is brief documentation; remaining lines form, with it,
Entire string should also end with a period, not a newline. */
char *doc;
- /* Auxiliary information.
- It is up to the calling program to decide what this means. */
- char *aux;
+ /* 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;
/* Nonzero identifies a prefix command. For them, the address
of the variable containing the list of subcommands. */
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) PARAMS ((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. */
+ char *var;
+
+ /* What kind of variable is *VAR? */
+ var_types var_type;
+
+ /* Pointer to NULL terminated list of enumerated values (like argv). */
+ char **enums;
+
+ /* Pointer to command strings of user-defined commands */
+ struct command_line *user_commands;
+
+ /* Pointer to command that is hooked by this one,
+ so the hook can be removed when this one is deleted. */
+ struct cmd_list_element *hookee;
+
+ /* 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 ();
-extern struct cmd_list_element *add_alias_cmd ();
-extern struct cmd_list_element *add_prefix_cmd ();
-extern struct cmd_list_element *lookup_cmd (), *lookup_cmd_1 ();
-extern char **complete_on_cmdlist ();
-extern void delete_cmd ();
-extern void help_cmd ();
+extern struct cmd_list_element *
+ add_cmd PARAMS ((char *, enum command_class, void (*fun) (char *, int),
+ char *, struct cmd_list_element **));
+
+extern struct cmd_list_element *
+ add_alias_cmd PARAMS ((char *, char *, enum command_class, int,
+ struct cmd_list_element **));
+
+extern struct cmd_list_element *
+ add_prefix_cmd PARAMS ((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 PARAMS ((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 PARAMS ((char **, struct cmd_list_element *, char *, int, int));
+
+extern struct cmd_list_element *
+ lookup_cmd_1 PARAMS ((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 PARAMS ((char *, enum command_class, void (*fun) (char *, int),
+ char *));
+
+extern struct cmd_list_element *
+ add_com_alias PARAMS ((char *, char *, enum command_class, int));
+
+extern struct cmd_list_element *
+ add_info PARAMS ((char *, void (*fun) (char *, int), char *));
+
+extern struct cmd_list_element *
+ add_info_alias PARAMS ((char *, char *, int));
+
+extern char **
+ complete_on_cmdlist PARAMS ((struct cmd_list_element *, char *, char *));
+
+extern char **
+ complete_on_enum PARAMS ((char **enumlist, char *, char *));
+
+extern void
+delete_cmd PARAMS ((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 void help_all (struct ui_file *);
+
+extern struct cmd_list_element *
+ add_set_cmd PARAMS ((char *, enum command_class, var_types, char *, char *,
+ struct cmd_list_element **));
+
+extern struct cmd_list_element *
+ add_set_enum_cmd PARAMS ((char *name, enum command_class, char *list[],
+ char *var, char *doc, struct cmd_list_element ** c));
+
+extern struct cmd_list_element *
+ add_show_from_set PARAMS ((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 PARAMS ((char *, int, struct cmd_list_element *));
+
+/* Do a "show" command for each thing on a command list. */
+
+extern void
+cmd_show_list PARAMS ((struct cmd_list_element *, int, char *));
+
+extern void
+error_no_arg PARAMS ((char *));
+
+extern void
+dont_repeat PARAMS ((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 PARAMS ((char *, int));
+
+#endif /* !defined (COMMAND_H) */
projects / binutils.git / blobdiff