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257 lines
9.5 KiB
C
257 lines
9.5 KiB
C
/* Header file for GDB command decoding library.
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Copyright (C) 2000-2017 Free Software Foundation, Inc.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#if !defined (CLI_DECODE_H)
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#define CLI_DECODE_H 1
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/* This file defines the private interfaces for any code implementing
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command internals. */
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/* Include the public interfaces. */
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#include "command.h"
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struct re_pattern_buffer;
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#if 0
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/* FIXME: cagney/2002-03-17: Once cmd_type() has been removed, ``enum
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cmd_types'' can be moved from "command.h" to "cli-decode.h". */
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/* Not a set/show command. Note that some commands which begin with
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"set" or "show" might be in this category, if their syntax does
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not fall into one of the following categories. */
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typedef enum cmd_types
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{
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not_set_cmd,
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set_cmd,
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show_cmd
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}
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cmd_types;
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#endif
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/* This structure records one command'd definition. */
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struct cmd_list_element
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{
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/* Points to next command in this list. */
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struct cmd_list_element *next;
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/* Name of this command. */
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const char *name;
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/* Command class; class values are chosen by application program. */
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enum command_class theclass;
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/* When 1 indicated that this command is deprecated. It may be
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removed from gdb's command set in the future. */
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unsigned int cmd_deprecated : 1;
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/* The user needs to be warned that this is a deprecated command.
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The user should only be warned the first time a command is
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used. */
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unsigned int deprecated_warn_user : 1;
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/* When functions are deprecated at compile time (this is the way
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it should, in general, be done) the memory containing the
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replacement string is statically allocated. In some cases it
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makes sense to deprecate commands at runtime (the testsuite is
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one example). In this case the memory for replacement is
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malloc'ed. When a command is undeprecated or re-deprecated at
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runtime we don't want to risk calling free on statically
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allocated memory, so we check this flag. */
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unsigned int malloced_replacement : 1;
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/* Set if the doc field should be xfree'd. */
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unsigned int doc_allocated : 1;
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/* Flag that specifies if this command is already running its hook. */
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/* Prevents the possibility of hook recursion. */
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unsigned int hook_in : 1;
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/* For prefix commands only:
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nonzero means do not get an error if subcommand is not
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recognized; call the prefix's own function in that case. */
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unsigned int allow_unknown : 1;
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/* Nonzero says this is an abbreviation, and should not
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be mentioned in lists of commands.
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This allows "br<tab>" to complete to "break", which it
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otherwise wouldn't. */
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unsigned int abbrev_flag : 1;
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/* Type of "set" or "show" command (or SET_NOT_SET if not "set"
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or "show"). */
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ENUM_BITFIELD (cmd_types) type : 2;
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/* What kind of variable is *VAR? */
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ENUM_BITFIELD (var_types) var_type : 4;
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/* Function definition of this command. NULL for command class
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names and for help topics that are not really commands. NOTE:
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cagney/2002-02-02: This function signature is evolving. For
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the moment suggest sticking with either set_cmd_cfunc() or
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set_cmd_sfunc(). */
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void (*func) (struct cmd_list_element *c, char *args, int from_tty);
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/* The command's real callback. At present func() bounces through
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to one of the below. */
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union
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{
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/* If type is not_set_cmd, call it like this: */
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cmd_cfunc_ftype *cfunc;
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/* If type is set_cmd or show_cmd, first set the variables,
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and then call this: */
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cmd_sfunc_ftype *sfunc;
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}
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function;
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/* Local state (context) for this command. This can be anything. */
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void *context;
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/* Documentation of this command (or help topic).
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First line is brief documentation; remaining lines form, with it,
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the full documentation. First line should end with a period.
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Entire string should also end with a period, not a newline. */
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const char *doc;
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/* For set/show commands. A method for printing the output to the
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specified stream. */
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show_value_ftype *show_value_func;
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/* If this command is deprecated, this is the replacement name. */
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const char *replacement;
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/* If this command represents a show command, then this function
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is called before the variable's value is examined. */
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void (*pre_show_hook) (struct cmd_list_element *c);
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/* Hook for another command to be executed before this command. */
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struct cmd_list_element *hook_pre;
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/* Hook for another command to be executed after this command. */
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struct cmd_list_element *hook_post;
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/* Nonzero identifies a prefix command. For them, the address
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of the variable containing the list of subcommands. */
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struct cmd_list_element **prefixlist;
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/* For prefix commands only:
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String containing prefix commands to get here: this one
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plus any others needed to get to it. Should end in a space.
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It is used before the word "command" in describing the
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commands reached through this prefix. */
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const char *prefixname;
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/* The prefix command of this command. */
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struct cmd_list_element *prefix;
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/* Completion routine for this command. TEXT is the text beyond
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what was matched for the command itself (leading whitespace is
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skipped). It stops where we are supposed to stop completing
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(rl_point) and is '\0' terminated.
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Return value is a malloc'd vector of pointers to possible
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completions terminated with NULL. If there are no completions,
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returning a pointer to a NULL would work but returning NULL
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itself is also valid. WORD points in the same buffer as TEXT,
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and completions should be returned relative to this position.
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For example, suppose TEXT is "foo" and we want to complete to
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"foobar". If WORD is "oo", return "oobar"; if WORD is
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"baz/foo", return "baz/foobar". */
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completer_ftype *completer;
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/* Handle the word break characters for this completer. Usually
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this function need not be defined, but for some types of
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completers (e.g., Python completers declared as methods inside
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a class) the word break chars may need to be redefined
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depending on the completer type (e.g., for filename
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completers). */
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completer_ftype_void *completer_handle_brkchars;
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/* Destruction routine for this command. If non-NULL, this is
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called when this command instance is destroyed. This may be
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used to finalize the CONTEXT field, if needed. */
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void (*destroyer) (struct cmd_list_element *self, void *context);
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/* Pointer to variable affected by "set" and "show". Doesn't
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matter if type is not_set. */
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void *var;
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/* Pointer to NULL terminated list of enumerated values (like
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argv). */
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const char *const *enums;
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/* Pointer to command strings of user-defined commands */
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struct command_line *user_commands;
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/* Pointer to command that is hooked by this one, (by hook_pre)
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so the hook can be removed when this one is deleted. */
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struct cmd_list_element *hookee_pre;
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/* Pointer to command that is hooked by this one, (by hook_post)
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so the hook can be removed when this one is deleted. */
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struct cmd_list_element *hookee_post;
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/* Pointer to command that is aliased by this one, so the
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aliased command can be located in case it has been hooked. */
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struct cmd_list_element *cmd_pointer;
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/* Start of a linked list of all aliases of this command. */
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struct cmd_list_element *aliases;
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/* Link pointer for aliases on an alias list. */
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struct cmd_list_element *alias_chain;
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/* If non-null, the pointer to a field in 'struct
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cli_suppress_notification', which will be set to true in cmd_func
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when this command is being executed. It will be set back to false
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when the command has been executed. */
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int *suppress_notification;
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};
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extern void help_cmd_list (struct cmd_list_element *, enum command_class,
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const char *, int, struct ui_file *);
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/* Functions that implement commands about CLI commands. */
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extern void help_cmd (const char *, struct ui_file *);
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extern void apropos_cmd (struct ui_file *, struct cmd_list_element *,
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struct re_pattern_buffer *, const char *);
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/* Used to mark commands that don't do anything. If we just leave the
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function field NULL, the command is interpreted as a help topic, or
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as a class of commands. */
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extern void not_just_help_class_command (char *arg, int from_tty);
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/* Exported to cli/cli-setshow.c */
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extern void print_doc_line (struct ui_file *, const char *);
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extern const char * const auto_boolean_enums[];
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/* Verify whether a given cmd_list_element is a user-defined command.
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Return 1 if it is user-defined. Return 0 otherwise. */
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extern int cli_user_command_p (struct cmd_list_element *);
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#endif /* !defined (CLI_DECODE_H) */
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