* write.c (relax_segment <rs_space>): Calculate growth using

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

diff --git a/gdb/command.h b/gdb/command.h
index 469df9f8cb97b426ee96bb68478c9c63a043f7b7..362bfd8d7f5baddd6492bb7402cde6805a29beac 100644 (file)
--- a/gdb/command.h
+++ b/gdb/command.h
@@ -1,5 +1,13 @@
+/* ***DEPRECATED***  The gdblib files must not be calling/using things in any
+   of the possible command languages.  If necessary, a hook (that may be
+   present or not) must be used and set to the appropriate routine by any
+   command language that cares about it.  If you are having to include this
+   file you are possibly doing things the old way.  This file will disapear.
+   2000-12-01 fnasser@redhat.com    */
+
 /* Header file for command-reading library command.c.
-   Copyright (C) 1986, 1989, 1990, 2000 Free Software Foundation, Inc.
+   Copyright 1986, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1999, 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
@@ -47,12 +55,28 @@ typedef enum cmd_types
   }
 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,
@@ -149,7 +173,14 @@ struct cmd_list_element
     char *replacement;
 
     /* Hook for another command to be executed before this command.  */
-    struct cmd_list_element *hook;
+    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.  */
@@ -204,9 +235,13 @@ struct cmd_list_element
     /* Pointer to command strings of user-defined commands */
     struct command_line *user_commands;
 
-    /* Pointer to command that is hooked by this one,
+    /* 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;
+    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.  */
@@ -299,6 +334,12 @@ extern struct cmd_list_element *add_set_enum_cmd (char *name,
                                                  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
                                                   **);
@@ -314,7 +355,7 @@ extern void do_setshow_command (char *, int, struct cmd_list_element *);
 
 extern void cmd_show_list (struct cmd_list_element *, int, char *);
 
-extern void error_no_arg (char *);
+extern NORETURN void error_no_arg (char *) ATTR_NORETURN;
 
 extern void dont_repeat (void);