Re: [Qemu-devel] [PATCH v2 2/3] qapi: Add enum_table[] parameter to start_alternate

[Eduardo Habkost <ehabkost@redhat.com>]

On Wed, May 10, 2017 at 03:34:52PM +0200, Markus Armbruster wrote:
> Eduardo Habkost <ehabkost@redhat.com> writes:
> 
> > The new parameter will be used by the string input visitor to detect
> > alternate types that can't be parsed unambiguously.
> >
> > Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
[...]
> > diff --git a/qapi/trace-events b/qapi/trace-events
> > index b15a55b797..384c251814 100644
> > --- a/qapi/trace-events
> > +++ b/qapi/trace-events
> > @@ -11,7 +11,7 @@ visit_next_list(void *v, void *tail, size_t size) "v=%p tail=%p size=%zu"
> >  visit_check_list(void *v) "v=%p"
> >  visit_end_list(void *v, void *obj) "v=%p obj=%p"
> >  
> > -visit_start_alternate(void *v, const char *name, void *obj, size_t size, uint32_t supported_qtypes) "v=%p name=%s obj=%p size=%zu supported_qtypes=0x%x"
> > +visit_start_alternate(void *v, const char *name, void *obj, size_t size, uint32_t supported_qtypes, void *enum_table) "v=%p name=%s obj=%p size=%zu supported_qtypes=0x%x enum_table=%p"
> >  visit_end_alternate(void *v, void *obj) "v=%p obj=%p"
> >  
> >  visit_optional(void *v, const char *name, bool *present) "v=%p name=%s present=%p"
> 
> Not yet sure we need this, but if we do, clarify the function comment,
> and you may add
> 
> Reviewed-by: Markus Armbruster <armbru@redhat.com>

Thanks.

The only reason for this patch is to allow code in patch 3/3 to
detect ambiguous enums at runtime. I don't think the runtime
detection solution looked good, though, so I will probably drop
this patch.

-- 
Eduardo