diff options
Diffstat (limited to 'scripts')
| -rw-r--r-- | scripts/qapi.py | 35 |
1 files changed, 18 insertions, 17 deletions
diff --git a/scripts/qapi.py b/scripts/qapi.py index 9e017050c0..471bbfc406 100644 --- a/scripts/qapi.py +++ b/scripts/qapi.py @@ -1010,18 +1010,18 @@ class QAPISchemaObjectTypeMember(object): class QAPISchemaObjectTypeVariants(object): - def __init__(self, tag_name, tag_enum, variants): - assert tag_name is None or isinstance(tag_name, str) - assert tag_enum is None or isinstance(tag_enum, str) + def __init__(self, tag_name, tag_member, variants): + # Flat unions pass tag_name but not tag_member. + # Simple unions and alternates pass tag_member but not tag_name. + # After check(), tag_member is always set, and tag_name remains + # a reliable witness of being used by a flat union. + assert bool(tag_member) != bool(tag_name) + assert (isinstance(tag_name, str) or + isinstance(tag_member, QAPISchemaObjectTypeMember)) for v in variants: assert isinstance(v, QAPISchemaObjectTypeVariant) self.tag_name = tag_name - if tag_name: - assert not tag_enum - self.tag_member = None - else: - self.tag_member = QAPISchemaObjectTypeMember('type', tag_enum, - False) + self.tag_member = tag_member self.variants = variants def check(self, schema, members, seen): @@ -1231,28 +1231,29 @@ class QAPISchema(object): [self._make_member('data', typ)]) return QAPISchemaObjectTypeVariant(case, typ) - def _make_tag_enum(self, type_name, variants): - return self._make_implicit_enum_type(type_name, - [v.name for v in variants]) + def _make_implicit_tag(self, type_name, variants): + typ = self._make_implicit_enum_type(type_name, + [v.name for v in variants]) + return QAPISchemaObjectTypeMember('type', typ, False) def _def_union_type(self, expr, info): name = expr['union'] data = expr['data'] base = expr.get('base') tag_name = expr.get('discriminator') - tag_enum = None + tag_member = None if tag_name: variants = [self._make_variant(key, value) for (key, value) in data.iteritems()] else: variants = [self._make_simple_variant(key, value) for (key, value) in data.iteritems()] - tag_enum = self._make_tag_enum(name, variants) + tag_member = self._make_implicit_tag(name, variants) self._def_entity( QAPISchemaObjectType(name, info, base, self._make_members(OrderedDict()), QAPISchemaObjectTypeVariants(tag_name, - tag_enum, + tag_member, variants))) def _def_alternate_type(self, expr, info): @@ -1260,11 +1261,11 @@ class QAPISchema(object): data = expr['data'] variants = [self._make_variant(key, value) for (key, value) in data.iteritems()] - tag_enum = self._make_tag_enum(name, variants) + tag_member = self._make_implicit_tag(name, variants) self._def_entity( QAPISchemaAlternateType(name, info, QAPISchemaObjectTypeVariants(None, - tag_enum, + tag_member, variants))) def _def_command(self, expr, info): |