diff options
| author | Eric Blake <eblake@redhat.com> | 2015-12-01 22:20:52 -0700 |
|---|---|---|
| committer | Markus Armbruster <armbru@redhat.com> | 2015-12-17 08:21:29 +0100 |
| commit | 5cdc8831a795fb8452d7e34f644202fd724e122a (patch) | |
| tree | ed3741502d2d42dfda844d45beedf4307168eaad /scripts | |
| parent | d00341af384665d259af475b14c96bb8414df415 (diff) | |
qapi: Simplify visits of optional fields
None of the visitor callbacks would set an error when testing
if an optional field was present; make this part of the interface
contract by eliminating the errp argument.
The resulting generated code has a nice diff:
|- visit_optional(v, &has_fdset_id, "fdset-id", &err);
|- if (err) {
|- goto out;
|- }
|+ visit_optional(v, &has_fdset_id, "fdset-id");
| if (has_fdset_id) {
| visit_type_int(v, &fdset_id, "fdset-id", &err);
| if (err) {
| goto out;
| }
| }
Signed-off-by: Eric Blake <eblake@redhat.com>
Message-Id: <1449033659-25497-9-git-send-email-eblake@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Diffstat (limited to 'scripts')
| -rw-r--r-- | scripts/qapi.py | 8 |
1 files changed, 2 insertions, 6 deletions
diff --git a/scripts/qapi.py b/scripts/qapi.py index 7e6c396a1d..8bf41db4e2 100644 --- a/scripts/qapi.py +++ b/scripts/qapi.py @@ -1656,15 +1656,11 @@ def gen_visit_fields(members, prefix='', need_cast=False, skiperr=False): for memb in members: if memb.optional: ret += mcgen(''' - visit_optional(v, &%(prefix)shas_%(c_name)s, "%(name)s", %(errp)s); + visit_optional(v, &%(prefix)shas_%(c_name)s, "%(name)s"); + if (%(prefix)shas_%(c_name)s) { ''', prefix=prefix, c_name=c_name(memb.name), name=memb.name, errp=errparg) - ret += gen_err_check(skiperr=skiperr) - ret += mcgen(''' - if (%(prefix)shas_%(c_name)s) { -''', - prefix=prefix, c_name=c_name(memb.name)) push_indent() # Ugly: sometimes we need to cast away const |