From 69dd62dfd60631ba69201d8a197fde1ece4b4df3 Mon Sep 17 00:00:00 2001 From: Kevin Wolf Date: Mon, 8 Jul 2013 16:14:21 +0200 Subject: 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 Reviewed-by: Eric Blake --- include/qapi/visitor-impl.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/qapi/visitor-impl.h') diff --git a/include/qapi/visitor-impl.h b/include/qapi/visitor-impl.h index 5c1297f430..f3fa420245 100644 --- a/include/qapi/visitor-impl.h +++ b/include/qapi/visitor-impl.h @@ -32,6 +32,8 @@ struct Visitor void (*type_enum)(Visitor *v, int *obj, const char *strings[], const char *kind, const char *name, Error **errp); + void (*get_next_type)(Visitor *v, int *kind, const int *qobjects, + const char *name, Error **errp); void (*type_int)(Visitor *v, int64_t *obj, const char *name, Error **errp); void (*type_bool)(Visitor *v, bool *obj, const char *name, Error **errp); -- cgit 1.4.1