[PATCH v2 05/19] qapi/schema: declare type for QAPISchemaArrayType.element_type

[John Snow]

This field should always be present and defined after check() is
called. Declare the property but allow its initialization to be delayed
until check() so that it can be typed without the use of `Optional`.

This helps simplify typing by avoiding the need to interrogate the value
for None at multiple callsites; the overwhelming majority of uses assume
a fully-initialized object.

Signed-off-by: John Snow <jsnow@redhat.com>
---
 scripts/qapi/schema.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/scripts/qapi/schema.py b/scripts/qapi/schema.py
index 48a51dcd188..e45d9545eda 100644
--- a/scripts/qapi/schema.py
+++ b/scripts/qapi/schema.py
@@ -389,7 +389,7 @@ def __init__(self, name, info, element_type):
         super().__init__(name, info, None)
         assert isinstance(element_type, str)
         self._element_type_name = element_type
-        self.element_type = None
+        self.element_type: QAPISchemaType
 
     def need_has_if_optional(self):
         # When FOO is an array, we still need has_FOO to distinguish
-- 
2.43.0