From: John Snow <js...@redhat.com>
We already take care to perform some type narrowing for arg_type and
ret_type, but not in a way where mypy can utilize the result once we add
type hints, e.g.:
qapi/schema.py:833: error: Incompatible types in assignment (expression
has type "QAPISchemaType", variable has type
"Optional[QAPISchemaObjectType]") [assignment]
qapi/schema.py:893: error: Incompatible types in assignment (expression
has type "QAPISchemaType", variable has type
"Optional[QAPISchemaObjectType]") [assignment]
A simple change to use a temporary variable helps the medicine go down.
Signed-off-by: John Snow <js...@redhat.com>
Reviewed-by: Markus Armbruster <arm...@redhat.com>
Signed-off-by: Markus Armbruster <arm...@redhat.com>
Message-ID: <20240315152301.3621858-10-arm...@redhat.com>
---
scripts/qapi/schema.py | 16 +++++++++-------
1 file changed, 9 insertions(+), 7 deletions(-)
diff --git a/scripts/qapi/schema.py b/scripts/qapi/schema.py
index 0b01c841ff..e44802369d 100644
--- a/scripts/qapi/schema.py
+++ b/scripts/qapi/schema.py
@@ -843,13 +843,14 @@ def __init__(self, name, info, doc, ifcond, features,
def check(self, schema):
super().check(schema)
if self._arg_type_name:
- self.arg_type = schema.resolve_type(
+ arg_type = schema.resolve_type(
self._arg_type_name, self.info, "command's 'data'")
- if not isinstance(self.arg_type, QAPISchemaObjectType):
+ if not isinstance(arg_type, QAPISchemaObjectType):
raise QAPISemError(
self.info,
"command's 'data' cannot take %s"
- % self.arg_type.describe())
+ % arg_type.describe())
+ self.arg_type = arg_type
if self.arg_type.variants and not self.boxed:
raise QAPISemError(
self.info,
@@ -866,8 +867,8 @@ def check(self, schema):
if self.name not in self.info.pragma.command_returns_exceptions:
typ = self.ret_type
if isinstance(typ, QAPISchemaArrayType):
- typ = self.ret_type.element_type
assert typ
+ typ = typ.element_type
if not isinstance(typ, QAPISchemaObjectType):
raise QAPISemError(
self.info,
@@ -903,13 +904,14 @@ def __init__(self, name, info, doc, ifcond, features,
arg_type, boxed):
def check(self, schema):
super().check(schema)
if self._arg_type_name:
- self.arg_type = schema.resolve_type(
+ typ = schema.resolve_type(
self._arg_type_name, self.info, "event's 'data'")
- if not isinstance(self.arg_type, QAPISchemaObjectType):
+ if not isinstance(typ, QAPISchemaObjectType):
raise QAPISemError(
self.info,
"event's 'data' cannot take %s"
- % self.arg_type.describe())
+ % typ.describe())
+ self.arg_type = typ
if self.arg_type.variants and not self.boxed:
raise QAPISemError(
self.info,
--
2.44.0
