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# mako/compat.py
# Copyright 2006-2022 the Mako authors and contributors <see AUTHORS file>
#
# This module is part of Mako and is released under
# the MIT License: http://www.opensource.org/licenses/mit-license.php
import collections
from importlib import util
import inspect
import sys
win32 = sys.platform.startswith("win")
pypy = hasattr(sys, "pypy_version_info")
py38 = sys.version_info >= (3, 8)
ArgSpec = collections.namedtuple(
"ArgSpec", ["args", "varargs", "keywords", "defaults"]
)
def inspect_getargspec(func):
"""getargspec based on fully vendored getfullargspec from Python 3.3."""
if inspect.ismethod(func):
func = func.__func__
if not inspect.isfunction(func):
raise TypeError(f"{func!r} is not a Python function")
co = func.__code__
if not inspect.iscode(co):
raise TypeError(f"{co!r} is not a code object")
nargs = co.co_argcount
names = co.co_varnames
nkwargs = co.co_kwonlyargcount
args = list(names[:nargs])
nargs += nkwargs
varargs = None
if co.co_flags & inspect.CO_VARARGS:
varargs = co.co_varnames[nargs]
nargs = nargs + 1
varkw = None
if co.co_flags & inspect.CO_VARKEYWORDS:
varkw = co.co_varnames[nargs]
return ArgSpec(args, varargs, varkw, func.__defaults__)
def load_module(module_id, path):
spec = util.spec_from_file_location(module_id, path)
module = util.module_from_spec(spec)
spec.loader.exec_module(module)
return module
def exception_as():
return sys.exc_info()[1]
def exception_name(exc):
return exc.__class__.__name__
if py38:
from importlib import metadata as importlib_metadata
else:
import importlib_metadata # noqa
def importlib_metadata_get(group):
ep = importlib_metadata.entry_points()
if hasattr(ep, "select"):
return ep.select(group=group)
else:
return ep.get(group, ())
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