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qapi: Generalize struct member policy checking

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The generated visitor functions call visit_deprecated_accept() and
visit_deprecated() when visiting a struct member with special feature
flag 'deprecated'.  This makes the feature flag visible to the actual
visitors.  I want to make feature flag 'unstable' visible there as
well, so I can add policy for it.

To let me make it visible, replace these functions by
visit_policy_reject() and visit_policy_skip(), which take the member's
special features as an argument.  Note that the new functions have the
opposite sense, i.e. the return value flips.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20211028102520.747396-6-armbru@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
[Unbreak forward visitor]
This commit is contained in:
Markus Armbruster 2021-10-28 12:25:16 +02:00
parent c67db1ed16
commit a130728554
8 changed files with 65 additions and 42 deletions
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6
include/qapi/visitor-impl.h
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@ -114,10 +114,12 @@ struct Visitor
void (*optional)(Visitor *v, const char *name, bool *present);
/* Optional */
bool (*deprecated_accept)(Visitor *v, const char *name, Error **errp);
bool (*policy_reject)(Visitor *v, const char *name,
unsigned special_features, Error **errp);
/* Optional */
bool (*deprecated)(Visitor *v, const char *name);
bool (*policy_skip)(Visitor *v, const char *name,
unsigned special_features);
/* Must be set */
VisitorType type;