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qapi: Use QNull for a more regular visit_type_null()

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Make visit_type_null() take an @obj argument like its buddies.  This
helps keep the next commit simple.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Daniel P. Berrange <berrange@redhat.com>
This commit is contained in:
Markus Armbruster 2017-06-26 18:22:59 +02:00
parent 006ca09f30
commit d2f95f4d48
15 changed files with 60 additions and 25 deletions
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8
include/qapi/visitor.h
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@ -618,10 +618,10 @@ void visit_type_any(Visitor *v, const char *name, QObject **obj, Error **errp);
* @name expresses the relationship of the null value to its parent
* container; see the general description of @name above.
*
* Unlike all other visit_type_* functions, no obj parameter is
* needed; rather, this is a witness that an explicit null value is
* expected rather than any other type.
* @obj must be non-NULL. Input visitors set *@obj to the value;
* other visitors ignore *@obj.
*/
void visit_type_null(Visitor *v, const char *name, Error **errp);
void visit_type_null(Visitor *v, const char *name, QNull **obj,
Error **errp);
#endif