spack/lib/spack/external/py2/typing.py
Tom Scogland 857749a9ba
add mypy to style checks; rename spack flake8 to spack style (#20384)
I lost my mind a bit after getting the completion stuff working and
decided to get Mypy working for spack as well. This adds a 
`.mypy.ini` that checks all of the spack and llnl modules, though
not yet packages, and fixes all of the identified missing types and
type issues for the spack library.

In addition to these changes, this includes:

* rename `spack flake8` to `spack style`

Aliases flake8 to style, and just runs flake8 as before, but with
a warning.  The style command runs both `flake8` and `mypy`,
in sequence. Added --no-<tool> options to turn off one or the
other, they are on by default.  Fixed two issues caught by the tools.

* stub typing module for python2.x

We don't support typing in Spack for python 2.x. To allow 2.x to
support `import typing` and `from typing import ...` without a
try/except dance to support old versions, this adds a stub module
*just* for python 2.x.  Doing it this way means we can only reliably
use all type hints in python3.7+, and mypi.ini has been updated to
reflect that.

* add non-default black check to spack style

This is a first step to requiring black.  It doesn't enforce it by
default, but it will check it if requested.  Currently enforcing the
line length of 79 since that's what flake8 requires, but it's a bit odd
for a black formatted project to be quite that narrow.  All settings are
in the style command since spack has no pyproject.toml and I don't
want to add one until more discussion happens. Also re-format
`style.py` since it no longer passed the black style check
with the new length.

* use style check in github action

Update the style and docs action to use `spack style`, adding in mypy
and black to the action even if it isn't running black right now.
2020-12-22 21:39:10 -08:00

85 lines
1.6 KiB
Python

# Copyright 2013-2020 Lawrence Livermore National Security, LLC and other
# Spack Project Developers. See the top-level COPYRIGHT file for details.
#
# SPDX-License-Identifier: (Apache-2.0 OR MIT)
"""
This is a fake set of symbols to allow spack to import typing in python
versions where we do not support type checking (<3)
"""
Annotated = None
Any = None
Callable = None
ForwardRef = None
Generic = None
Literal = None
Optional = None
Tuple = None
TypeVar = None
Union = None
AbstractSet = None
ByteString = None
Container = None
Hashable = None
ItemsView = None
Iterable = None
Iterator = None
KeysView = None
Mapping = None
MappingView = None
MutableMapping = None
MutableSequence = None
MutableSet = None
Sequence = None
Sized = None
ValuesView = None
Awaitable = None
AsyncIterator = None
AsyncIterable = None
Coroutine = None
Collection = None
AsyncGenerator = None
AsyncContextManager = None
Reversible = None
SupportsAbs = None
SupportsBytes = None
SupportsComplex = None
SupportsFloat = None
SupportsInt = None
SupportsRound = None
ChainMap = None
Dict = None
List = None
OrderedDict = None
Set = None
FrozenSet = None
NamedTuple = None
Generator = None
AnyStr = None
cast = None
get_args = None
get_origin = None
get_type_hints = None
no_type_check = None
no_type_check_decorator = None
NoReturn = None
# these are the typing extension symbols
ClassVar = None
Final = None
Protocol = None
Type = None
TypedDict = None
ContextManager = None
Counter = None
Deque = None
DefaultDict = None
SupportsIndex = None
final = None
IntVar = None
Literal = None
NewType = None
overload = None
runtime_checkable = None
Text = None
TYPE_CHECKING = None