TYPING: add stubs for _packer and _unpacker (#28135)

Author: simonjayhawkins

pandas/io/msgpack/_packer.pyi

@@ -0,0 +1,22 @@
+# flake8: noqa
+
+class Packer:
+ def __cinit__(self): ...
+ def __init__(
+ self,
+ default=...,
+ encoding=...,
+ unicode_errors=...,
+ use_single_float=...,
+ autoreset: int = ...,
+ use_bin_type: int = ...,
+ ): ...
+ def __dealloc__(self): ...
+ def _pack(self, o, nest_limit: int = ...) -> int: ...
+ def pack(self, obj): ...
+ def pack_ext_type(self, typecode, data): ...
+ def pack_array_header(self, size): ...
+ def pack_map_header(self, size): ...
+ def pack_map_pairs(self, pairs): ...
+ def reset(self) -> None: ...
+ def bytes(self): ...

pandas/io/msgpack/_unpacker.pyi

@@ -0,0 +1,59 @@
+# flake8: noqa
+
+def unpackb(
+ packed,
+ object_hook=...,
+ list_hook=...,
+ use_list=...,
+ encoding=...,
+ unicode_errors=...,
+ object_pairs_hook=...,
+ ext_hook=...,
+ max_str_len=...,
+ max_bin_len=...,
+ max_array_len=...,
+ max_map_len=...,
+ max_ext_len=...,
+): ...
+def unpack(
+ stream,
+ object_hook=...,
+ list_hook=...,
+ use_list=...,
+ encoding=...,
+ unicode_errors=...,
+ object_pairs_hook=...,
+): ...
+
+class Unpacker:
+ def __cinit__(self): ...
+ def __dealloc__(self): ...
+ def __init__(
+ self,
+ file_like=...,
+ read_size=...,
+ use_list=...,
+ object_hook=...,
+ object_pairs_hook=...,
+ list_hook=...,
+ encoding=...,
+ unicode_errors=...,
+ max_buffer_size: int = ...,
+ ext_hook=...,
+ max_str_len=...,
+ max_bin_len=...,
+ max_array_len=...,
+ max_map_len=...,
+ max_ext_len=...,
+ ): ...
+ def feed(self, next_bytes): ...
+ def append_buffer(self, _buf, _buf_len): ...
+ def read_from_file(self): ...
+ def _unpack(self, execute, write_bytes, iter=...): ...
+ def read_bytes(self, nbytes): ...
+ def unpack(self, write_bytes=...): ...
+ def skip(self, write_bytes=...): ...
+ def read_array_header(self, write_bytes=...): ...
+ def read_map_header(self, write_bytes=...): ...
+ def __iter__(self): ...
+ def __next__(self): ...