tree 331eee5391b95110ce3960b5623dcf8646f65e57
parent 761d524dbcc5bb41213dd0f238f43c273bc2b077
author Kevin Wolf <kwolf@redhat.com> 1372859937 +0200
committer Kevin Wolf <kwolf@redhat.com> 1374865777 +0200

qapi: Flat unions with arbitrary discriminator

Instead of the rather verbose syntax that distinguishes base and
subclass fields...

  { "type": "file",
    "read-only": true,
    "data": {
        "filename": "test"
    } }

...we can now have both in the same namespace, allowing a more direct
mapping of the command line, and moving fields between the common base
and subclasses without breaking the API:

  { "driver": "file",
    "read-only": true,
    "filename": "test" }

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>