[rfa/cli] s/NO_FUNCTION/NULL/

[Andrew Cagney <ac131313 at cygnus dot com>]

Hello,

The attached replaces the NO_FUNCTION macro with NULL.  If you examine 
the code, function.cfunc() is only sometimes assigned the value 
NO_FUNCTION and no code actually tests for a value of NO_FUNCTION. 
Consequently, I can't see any point in having this macro.

ok?

Andrew
2001-12-28  Andrew Cagney  <ac131313@redhat.com>

	* command.h (NO_FUNCTION): Delete macro.
	* cli/cli-decode.h (NO_FUNCTION): Ditto.
	* top.c (execute_command): Replace NO_FUNCTION with NULL.
	* tracepoint.c (_initialize_tracepoint): Ditto.
	* cli/cli-decode.c (add_set_cmd): Ditto.
	* cli/cli-cmds.c (init_cli_cmds): Ditto.

Index: tui/ChangeLog
2001-12-28  Andrew Cagney  <ac131313@redhat.com>

	* tuiWin.c (_initialize_tuiWin): Replace NO_FUNCTION with NULL.

Index: command.h
===================================================================
RCS file: /cvs/src/src/gdb/command.h,v
retrieving revision 1.20
diff -u -r1.20 command.h
--- command.h	2001/11/22 00:23:11	1.20
+++ command.h	2002/01/02 15:49:57
@@ -126,9 +126,8 @@
     /* 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.  */
+    /* Function definition of this command.  NULL for command class
+       names and for help topics that are not really commands.  */
     union
       {
 	/* If type is not_set_cmd, call it like this:  */
@@ -139,7 +138,6 @@
 	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,
Index: top.c
===================================================================
RCS file: /cvs/src/src/gdb/top.c,v
retrieving revision 1.50
diff -u -r1.50 top.c
--- top.c	2001/11/27 04:15:09	1.50
+++ top.c	2002/01/02 15:49:58
@@ -698,7 +698,7 @@
 	execute_user_command (c, arg);
       else if (c->type == set_cmd || c->type == show_cmd)
 	do_setshow_command (arg, from_tty & caution, c);
-      else if (c->function.cfunc == NO_FUNCTION)
+      else if (c->function.cfunc == NULL)
 	error ("That is not a command, just a help topic.");
       else if (call_command_hook)
 	call_command_hook (c, arg, from_tty & caution);
Index: tracepoint.c
===================================================================
RCS file: /cvs/src/src/gdb/tracepoint.c,v
retrieving revision 1.29
diff -u -r1.29 tracepoint.c
--- tracepoint.c	2001/12/25 22:24:38	1.29
+++ tracepoint.c	2002/01/02 15:50:00
@@ -2658,7 +2658,7 @@
   add_info ("scope", scope_info,
 	    "List the variables local to a scope");
 
-  add_cmd ("tracepoints", class_trace, NO_FUNCTION,
+  add_cmd ("tracepoints", class_trace, NULL,
 	   "Tracing of program execution without stopping the program.",
 	   &cmdlist);
 
Index: cli/cli-cmds.c
===================================================================
RCS file: /cvs/src/src/gdb/cli/cli-cmds.c,v
retrieving revision 1.10
diff -u -r1.10 cli-cmds.c
--- cli-cmds.c	2001/09/01 21:38:05	1.10
+++ cli-cmds.c	2002/01/02 15:50:00
@@ -605,24 +605,24 @@
   /* Define the classes of commands.
      They will appear in the help list in the reverse of this order.  */
 
-  add_cmd ("internals", class_maintenance, NO_FUNCTION,
+  add_cmd ("internals", class_maintenance, NULL,
 	   "Maintenance commands.\n\
 Some gdb commands are provided just for use by gdb maintainers.\n\
 These commands are subject to frequent change, and may not be as\n\
 well documented as user commands.",
 	   &cmdlist);
-  add_cmd ("obscure", class_obscure, NO_FUNCTION, "Obscure features.", &cmdlist);
-  add_cmd ("aliases", class_alias, NO_FUNCTION, "Aliases of other commands.", &cmdlist);
-  add_cmd ("user-defined", class_user, NO_FUNCTION, "User-defined commands.\n\
+  add_cmd ("obscure", class_obscure, NULL, "Obscure features.", &cmdlist);
+  add_cmd ("aliases", class_alias, NULL, "Aliases of other commands.", &cmdlist);
+  add_cmd ("user-defined", class_user, NULL, "User-defined commands.\n\
 The commands in this class are those defined by the user.\n\
 Use the \"define\" command to define a command.", &cmdlist);
-  add_cmd ("support", class_support, NO_FUNCTION, "Support facilities.", &cmdlist);
+  add_cmd ("support", class_support, NULL, "Support facilities.", &cmdlist);
   if (!dbx_commands)
-    add_cmd ("status", class_info, NO_FUNCTION, "Status inquiries.", &cmdlist);
-  add_cmd ("files", class_files, NO_FUNCTION, "Specifying and examining files.", &cmdlist);
-  add_cmd ("breakpoints", class_breakpoint, NO_FUNCTION, "Making program stop at certain points.", &cmdlist);
-  add_cmd ("data", class_vars, NO_FUNCTION, "Examining data.", &cmdlist);
-  add_cmd ("stack", class_stack, NO_FUNCTION, "Examining the stack.\n\
+    add_cmd ("status", class_info, NULL, "Status inquiries.", &cmdlist);
+  add_cmd ("files", class_files, NULL, "Specifying and examining files.", &cmdlist);
+  add_cmd ("breakpoints", class_breakpoint, NULL, "Making program stop at certain points.", &cmdlist);
+  add_cmd ("data", class_vars, NULL, "Examining data.", &cmdlist);
+  add_cmd ("stack", class_stack, NULL, "Examining the stack.\n\
 The stack is made up of stack frames.  Gdb assigns numbers to stack frames\n\
 counting from zero for the innermost (currently executing) frame.\n\n\
 At any time gdb identifies one frame as the \"selected\" frame.\n\
@@ -630,7 +630,7 @@
 When the program being debugged stops, gdb selects the innermost frame.\n\
 The commands below can be used to select other frames by number or address.",
 	   &cmdlist);
-  add_cmd ("running", class_run, NO_FUNCTION, "Running the program.", &cmdlist);
+  add_cmd ("running", class_run, NULL, "Running the program.", &cmdlist);
 
   /* Define general commands. */
 
Index: cli/cli-decode.c
===================================================================
RCS file: /cvs/src/src/gdb/cli/cli-decode.c,v
retrieving revision 1.10
diff -u -r1.10 cli-decode.c
--- cli-decode.c	2001/12/20 18:35:30	1.10
+++ cli-decode.c	2002/01/02 15:50:01
@@ -238,13 +238,12 @@
 	     char *doc,
 	     struct cmd_list_element **list)
 {
-  struct cmd_list_element *c
-  = add_cmd (name, class, NO_FUNCTION, doc, list);
+  struct cmd_list_element *c = add_cmd (name, class, NULL, doc, list);
 
   c->type = set_cmd;
   c->var_type = var_type;
   c->var = var;
-  /* This needs to be something besides NO_FUNCTION so that this isn't
+  /* This needs to be something besides NULL so that this isn't
      treated as a help class.  */
   c->function.sfunc = empty_sfunc;
   return c;
Index: cli/cli-decode.h
===================================================================
RCS file: /cvs/src/src/gdb/cli/cli-decode.h,v
retrieving revision 1.5
diff -u -r1.5 cli-decode.h
--- cli-decode.h	2001/11/22 00:23:13	1.5
+++ cli-decode.h	2002/01/02 15:50:01
@@ -120,9 +120,8 @@
     /* 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.  */
+    /* Function definition of this command.  NULL for command class
+       names and for help topics that are not really commands.  */
     union
       {
 	/* If type is not_set_cmd, call it like this:  */
@@ -133,7 +132,6 @@
 	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,
Index: tui/tuiWin.c
===================================================================
RCS file: /cvs/src/src/gdb/tui/tuiWin.c,v
retrieving revision 1.16
diff -u -r1.16 tuiWin.c
--- tuiWin.c	2001/07/28 19:30:54	1.16
+++ tuiWin.c	2002/01/02 15:50:22
@@ -280,7 +280,7 @@
 
   /* Define the classes of commands.
      They will appear in the help list in the reverse of this order.  */
-  add_cmd ("tui", class_tui, NO_FUNCTION,
+  add_cmd ("tui", class_tui, NULL,
 	   "Text User Interface commands.",
 	   &cmdlist);