Add some missing override decorators

Author: inducer

loopy/kernel/__init__.py

@@ -1345,6 +1345,7 @@ def __call__(self, *args, **kwargs):
 
     # {{{ pickling
 
+    @override
     def __getstate__(self):
         result = {
                 fld.name: getattr(self, fld.name)

loopy/tools.py

@@ -377,6 +377,7 @@ def unpickle(self):
         from pickle import loads
         return loads(self.objstring)
 
+    @override
     def __getstate__(self):
         return {"objstring": self.objstring}
 
@@ -443,6 +444,7 @@ def __len__(self):
     def __iter__(self) -> abc.Iterator[K]:
         return iter(self._map)
 
+    @override
     def __getstate__(self):
         return {"_map": {
             key: _PickledObject(val)
@@ -491,6 +493,7 @@ def __len__(self):
     def insert(self, key: int, value: V):
         self._list.insert(key, value)
 
+    @override
     def __getstate__(self):
         return {"_list": [_PickledObject(val) for val in self._list]}
 
@@ -608,6 +611,7 @@ def __repr__(self):
             return "Optional()"
         return "Optional(%r)" % self._value
 
+    @override
     def __getstate__(self):
         if not self.has_value:
             return _no_value

test/test_misc.py

@@ -24,6 +24,7 @@
 from pickle import dumps, loads
 
 import pytest
+from typing_extensions import override
 
 import loopy as lp
 from loopy.version import LOOPY_USE_LANGUAGE_VERSION_2018_2  # noqa: F401
@@ -66,6 +67,7 @@ class PickleDetector:
     def reset(cls):
         cls.instance_unpickled = False
 
+    @override
     def __getstate__(self):
         return {"state": self.state}