diff options
author | Kevin Wolf <kwolf@redhat.com> | 2013-07-08 16:14:21 +0200 |
---|---|---|
committer | Kevin Wolf <kwolf@redhat.com> | 2013-07-26 21:10:11 +0200 |
commit | 69dd62dfd60631ba69201d8a197fde1ece4b4df3 (patch) | |
tree | 9963bd4874919f3a53e0cc2aab0550385fd3ff79 /qapi | |
parent | ea66c6d8819c8fc5f73a28554992be64e5399fed (diff) |
qapi: Anonymous unions
The discriminator for anonymous unions is the data type. This allows to
have a union type that allows both of these:
{ 'file': 'my_existing_block_device_id' }
{ 'file': { 'filename': '/tmp/mydisk.qcow2', 'read-only': true } }
Unions like this are specified in the schema with an empty dict as
discriminator. For this example you could take:
{ 'union': 'BlockRef',
'discriminator': {},
'data': { 'definition': 'BlockOptions',
'reference': 'str' } }
{ 'type': 'ExampleObject',
'data: { 'file': 'BlockRef' } }
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Diffstat (limited to 'qapi')
-rw-r--r-- | qapi/qapi-visit-core.c | 9 | ||||
-rw-r--r-- | qapi/qmp-input-visitor.c | 14 |
2 files changed, 23 insertions, 0 deletions
diff --git a/qapi/qapi-visit-core.c b/qapi/qapi-visit-core.c index 9b4d51bc0a..d6a4012f78 100644 --- a/qapi/qapi-visit-core.c +++ b/qapi/qapi-visit-core.c @@ -12,6 +12,7 @@ */ #include "qemu-common.h" +#include "qapi/qmp/qobject.h" #include "qapi/qmp/qerror.h" #include "qapi/visitor.h" #include "qapi/visitor-impl.h" @@ -98,6 +99,14 @@ void visit_end_optional(Visitor *v, Error **errp) } } +void visit_get_next_type(Visitor *v, int *obj, const int *qtypes, + const char *name, Error **errp) +{ + if (!error_is_set(errp) && v->get_next_type) { + v->get_next_type(v, obj, qtypes, name, errp); + } +} + void visit_type_enum(Visitor *v, int *obj, const char *strings[], const char *kind, const char *name, Error **errp) { diff --git a/qapi/qmp-input-visitor.c b/qapi/qmp-input-visitor.c index 70864a1af2..bf42c04ea6 100644 --- a/qapi/qmp-input-visitor.c +++ b/qapi/qmp-input-visitor.c @@ -208,6 +208,19 @@ static void qmp_input_end_list(Visitor *v, Error **errp) qmp_input_pop(qiv, errp); } +static void qmp_input_get_next_type(Visitor *v, int *kind, const int *qobjects, + const char *name, Error **errp) +{ + QmpInputVisitor *qiv = to_qiv(v); + QObject *qobj = qmp_input_get_object(qiv, name, false); + + if (!qobj) { + error_set(errp, QERR_MISSING_PARAMETER, name ? name : "null"); + return; + } + *kind = qobjects[qobject_type(qobj)]; +} + static void qmp_input_type_int(Visitor *v, int64_t *obj, const char *name, Error **errp) { @@ -317,6 +330,7 @@ QmpInputVisitor *qmp_input_visitor_new(QObject *obj) v->visitor.type_str = qmp_input_type_str; v->visitor.type_number = qmp_input_type_number; v->visitor.start_optional = qmp_input_start_optional; + v->visitor.get_next_type = qmp_input_get_next_type; qmp_input_push(v, obj, NULL); qobject_incref(obj); |