Add google.protobuf.internal.containers.pyi to typeshed (#1718)

third_party/2/google/protobuf/internal/containers.pyi

@@ -0,0 +1,46 @@
+from google.protobuf.descriptor import Descriptor
+from google.protobuf.internal.message_listener import MessageListener
+from google.protobuf.message import Message
+from typing import Sequence, TypeVar, Generic, Any, Iterator, Iterable, Union, Optional, Callable
+
+_T = TypeVar('_T')
+class BaseContainer(Generic[_T]):
+    def __init__(self, message_listener: MessageListener) -> None: ...
+    def __getitem__(self, key: int) -> _T: ...
+    def __len__(self) -> int: ...
+    def __ne__(self, other: object) -> bool: ...
+    def __hash__(self) -> int: ...
+    def __repr__(self) -> str: ...
+    def sort(self, *, key: Optional[Callable[[_T], Any]] = ..., reverse: bool = ...) -> None: ...
+
+class RepeatedScalarFieldContainer(Generic[_T], BaseContainer[_T]):
+    def __init__(self, message_listener: MessageListener, message_descriptor: Descriptor) -> None: ...
+    def append(self, value: _T) -> None: ...
+    def insert(self, key: int, value: _T) -> None: ...
+    def extend(self, elem_seq: Sequence[_T]) -> None: ...
+    def MergeFrom(self, other: RepeatedScalarFieldContainer[_T]) -> None: ...
+    def remove(self, elem: _T) -> None: ...
+    def pop(self, key: int = ...) -> _T: ...
+    def __iter__(self) -> Iterator[_T]: ...
+    def __delitem__(self, key: Union[int, slice]) -> None: ...
+    def __setitem__(self, key: int, value: _T) -> None: ...
+
+class RepeatedCompositeFieldContainer(Generic[_T], BaseContainer[_T]):
+    def __init__(self, message_listener: MessageListener, type_checker: Any) -> None: ...
+    def add(self, **kwargs: Any) -> _T: ...
+    def extend(self, elem_seq: Sequence[_T]) -> None: ...
+    def MergeFrom(self, other: RepeatedCompositeFieldContainer[_T]) -> None: ...
+    def remove(self, elem: _T) -> None: ...
+    def pop(self, key: int = ...) -> _T: ...
+    def __iter__(self) -> Iterator[_T]: ...
+    def __delitem__(self, key: Union[int, slice]) -> None: ...
+
+# Classes not yet typed
+class Mapping(Any):
+    pass
+class MutableMapping(Mapping):
+    pass
+class ScalarMap(MutableMapping):
+    pass
+class MessageMap(MutableMapping):
+    pass

third_party/2/google/protobuf/internal/message_listener.pyi

@@ -0,0 +1,5 @@
+class MessageListener(object):
+    def Modified(self) -> None: ...
+
+class NullMessageListener(MessageListener):
+    def Modified(self) -> None: ...