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qapi: Permit 'boxed' with empty type

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We reject empty types with 'boxed': true.  We don't really need that
to work, but making it work is actually simpler than rejecting it, so
do that.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <20190913201349.24332-9-armbru@redhat.com>
This commit is contained in:
Markus Armbruster 2019-09-13 22:13:41 +02:00
parent 9b4416bfc1
commit 675b214bc6
11 changed files with 19 additions and 25 deletions
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10
scripts/qapi/events.py
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@ -65,6 +65,8 @@ def gen_event_send(name, arg_type, boxed, event_enum_name, event_emit):
# practice, we can rename our local variables with a leading _ prefix,
# or split the code into a wrapper function that creates a boxed
# 'param' object then calls another to do the real work.
have_args = boxed or (arg_type and not arg_type.is_empty())
ret = mcgen('''
%(proto)s
@ -73,15 +75,13 @@ def gen_event_send(name, arg_type, boxed, event_enum_name, event_emit):
''',
proto=build_event_send_proto(name, arg_type, boxed))
if arg_type and not arg_type.is_empty():
if have_args:
ret += mcgen('''
QObject *obj;
Visitor *v;
''')
if not boxed:
ret += gen_param_var(arg_type)
else:
assert not boxed
ret += mcgen('''
@ -90,7 +90,7 @@ def gen_event_send(name, arg_type, boxed, event_enum_name, event_emit):
''',
name=name)
if arg_type and not arg_type.is_empty():
if have_args:
ret += mcgen('''
v = qobject_output_visitor_new(&obj);
''')
@ -121,7 +121,7 @@ def gen_event_send(name, arg_type, boxed, event_enum_name, event_emit):
event_emit=event_emit,
c_enum=c_enum_const(event_enum_name, name))
if arg_type and not arg_type.is_empty():
if have_args:
ret += mcgen('''
visit_free(v);
''')