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qapi: Fix alternates that accept 'number' but not 'int'

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The QMP input visitor allows integral values to be assigned by
promotion to a QTYPE_QFLOAT.  However, when parsing an alternate,
we did not take this into account, such that an alternate that
accepts 'number' and some other type, but not 'int', would reject
integral values.

With this patch, we now have the following desirable table:

    alternate has      case selected for
    'int'  'number'    QTYPE_QINT  QTYPE_QFLOAT
      no        no     error       error
      no       yes     'number'    'number'
     yes        no     'int'       error
     yes       yes     'int'       'number'

While it is unlikely that we will ever use 'number' in an
alternate other than in the testsuite, it never hurts to be
more precise in what we allow.

Signed-off-by: Eric Blake <eblake@redhat.com>
Message-Id: <1449033659-25497-8-git-send-email-eblake@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
This commit is contained in:
Eric Blake
2015-12-01 22:20:51 -07:00
committed by Markus Armbruster
parent 9d3f3494c5
commit d00341af38
6 changed files with 22 additions and 19 deletions
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2
include/qapi/visitor-impl.h
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@@ -33,7 +33,7 @@ struct Visitor
void (*type_enum)(Visitor *v, int *obj, const char * const strings[],
const char *kind, const char *name, Error **errp);
/* May be NULL; only needed for input visitors. */
void (*get_next_type)(Visitor *v, QType *type,
void (*get_next_type)(Visitor *v, QType *type, bool promote_int,
const char *name, Error **errp);
void (*type_int)(Visitor *v, int64_t *obj, const char *name, Error **errp);