Re: [PATCH v3 07/10] qapi: implement conditional command arguments

[Eric Blake]

On Tue, Feb 07, 2023 at 06:25:32PM +0400, marcandre.lureau@redhat.com wrote:
> From: Marc-André Lureau <marcandre.lureau@redhat.com>
> 
> The generated code doesn't quite handle the conditional arguments.
> For example, 'bar' in 'test-if-cmd' is not correctly surrounded by #if
> conditions. See generated code in qmp_marshal_test_if_cmd().
> 
> Note that if there are multiple optional arguments at the last position,
> there might be compilation issues due to extra comas. I left an assert
> and FIXME for later.

Would it be simpler to just state that ALL commands that want to use
optional arguments must use a boxed type?  Then the function signature
is simple (a single boxed type), and the logic of the optional
parameter is now contained within the type rather than within the
function signature.

-- 
Eric Blake, Principal Software Engineer
Red Hat, Inc.           +1-919-301-3266
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