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Add add_cmd function overloads

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This adds two add_cmd overloads: one whose callback takes a const char *,
and one that doesn't accept a function at all.  The no-function overload
was introduced to avoid ambiguity when NULL was passed as the function.

Long term the goal is for all commands to take const arguments, and
for the non-const variants to be removed entirely.

gdb/ChangeLog
2017-09-27  Tom Tromey  <tom@tromey.com>

	* cli/cli-decode.c (add_cmd, set_cmd_cfunc): New function
	overloads.
	(do_add_cmd): Rename from add_cmd.  Don't call set_cmd_cfunc.
	(do_const_cfunc): New function.
	(cmd_cfunc_eq): New overload.
	(cli_user_command_p): Check do_const_cfunc.
	* cli/cli-decode.h (struct cmd_list_element) <function>: New field
	const_cfunc.
	* command.h (add_cmd): Add const overload and no-function
	overload.
	(set_cmd_cfunc): Add const overload.
	(cmd_const_cfunc_ftype): Declare.
	(cmd_cfunc_eq): Add const overload.
	* breakpoint.c, cli-cmds.c, cli-dump.c, guile/scm-cmd.c,
	python/py-cmd.c, target.c, tracepoint.c: Use no-function add_cmd
	overload.
This commit is contained in:
Tom Tromey 2017-09-09 20:51:33 -06:00
parent a9bbfbd85f
commit 0450cc4ce8
11 changed files with 124 additions and 31 deletions
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4
gdb/cli/cli-dump.c
View file

@ -360,7 +360,7 @@ add_dump_command (const char *name,
struct cmd_list_element *c;
struct dump_context *d;
c = add_cmd (name, all_commands, NULL, descr, &dump_cmdlist);
c = add_cmd (name, all_commands, descr, &dump_cmdlist);
c->completer = filename_completer;
d = XNEW (struct dump_context);
d->func = func;
@ -368,7 +368,7 @@ add_dump_command (const char *name,
set_cmd_context (c, d);
c->func = call_dump_func;
c = add_cmd (name, all_commands, NULL, descr, &append_cmdlist);
c = add_cmd (name, all_commands, descr, &append_cmdlist);
c->completer = filename_completer;
d = XNEW (struct dump_context);
d->func = func;