mirror of
https://github.com/thegeeklab/ansible-later.git
synced 2024-11-26 23:00:36 +00:00
118 lines
2.9 KiB
Python
118 lines
2.9 KiB
Python
|
import sys
|
||
|
|
from functools import wraps
|
||
|
|
from inspect import getargspec
|
||
|
|
from textwrap import dedent
|
||
|
|
|
||
|
|
from . import singleton
|
||
|
|
from .compat import ClassType
|
||
|
|
|
||
|
|
DEFAULT = singleton('DEFAULT')
|
||
|
|
defaults = [DEFAULT]
|
||
|
|
|
||
|
|
|
||
|
|
try:
|
||
|
|
from .mock import DEFAULT
|
||
|
|
except ImportError: # pragma: no cover
|
||
|
|
pass
|
||
|
|
else:
|
||
|
|
defaults.append(DEFAULT)
|
||
|
|
|
||
|
|
|
||
|
|
def generator(*args):
|
||
|
|
"""
|
||
|
|
A utility function for creating a generator that will yield the
|
||
|
|
supplied arguments.
|
||
|
|
"""
|
||
|
|
for i in args:
|
||
|
|
yield i
|
||
|
|
|
||
|
|
|
||
|
|
class Wrapping:
|
||
|
|
|
||
|
|
attribute_name = None
|
||
|
|
new = DEFAULT
|
||
|
|
|
||
|
|
def __init__(self, before, after):
|
||
|
|
self.before, self.after = before, after
|
||
|
|
|
||
|
|
def __enter__(self):
|
||
|
|
return self.before()
|
||
|
|
|
||
|
|
def __exit__(self, exc_type=None, exc_val=None, exc_tb=None):
|
||
|
|
if self.after is not None:
|
||
|
|
self.after()
|
||
|
|
|
||
|
|
|
||
|
|
def wrap(before, after=None):
|
||
|
|
"""
|
||
|
|
A decorator that causes the supplied callables to be called before
|
||
|
|
or after the wrapped callable, as appropriate.
|
||
|
|
"""
|
||
|
|
|
||
|
|
wrapping = Wrapping(before, after)
|
||
|
|
|
||
|
|
def wrapper(func):
|
||
|
|
if hasattr(func, 'patchings'):
|
||
|
|
func.patchings.append(wrapping)
|
||
|
|
return func
|
||
|
|
|
||
|
|
@wraps(func)
|
||
|
|
def patched(*args, **keywargs):
|
||
|
|
extra_args = []
|
||
|
|
entered_patchers = []
|
||
|
|
|
||
|
|
to_add = len(getargspec(func)[0][len(args):])
|
||
|
|
added = 0
|
||
|
|
|
||
|
|
exc_info = tuple()
|
||
|
|
try:
|
||
|
|
for patching in patched.patchings:
|
||
|
|
arg = patching.__enter__()
|
||
|
|
entered_patchers.append(patching)
|
||
|
|
if patching.attribute_name is not None:
|
||
|
|
keywargs.update(arg)
|
||
|
|
elif patching.new in defaults and added < to_add:
|
||
|
|
extra_args.append(arg)
|
||
|
|
added += 1
|
||
|
|
|
||
|
|
args += tuple(extra_args)
|
||
|
|
return func(*args, **keywargs)
|
||
|
|
except:
|
||
|
|
# Pass the exception to __exit__
|
||
|
|
exc_info = sys.exc_info()
|
||
|
|
# re-raise the exception
|
||
|
|
raise
|
||
|
|
finally:
|
||
|
|
for patching in reversed(entered_patchers):
|
||
|
|
patching.__exit__(*exc_info)
|
||
|
|
|
||
|
|
patched.patchings = [wrapping]
|
||
|
|
return patched
|
||
|
|
|
||
|
|
return wrapper
|
||
|
|
|
||
|
|
|
||
|
|
def extend_docstring(docstring, objs):
|
||
|
|
for obj in objs:
|
||
|
|
try:
|
||
|
|
obj.__doc__ = dedent(obj.__doc__) + docstring
|
||
|
|
except (AttributeError, TypeError): # python 2 or pypy 4.0.1 :-(
|
||
|
|
pass
|
||
|
|
|
||
|
|
|
||
|
|
def match_type_or_instance(expected, actual):
|
||
|
|
if isinstance(expected, (ClassType, type)):
|
||
|
|
type_actual = type(actual)
|
||
|
|
if expected is type_actual:
|
||
|
|
return type_actual
|
||
|
|
return actual
|
||
|
|
|
||
|
|
|
||
|
|
def indent(text, indent_size = 2):
|
||
|
|
indented = []
|
||
|
|
for do_indent, line in enumerate(text.splitlines(True)):
|
||
|
|
if do_indent:
|
||
|
|
line = ' '*indent_size + line
|
||
|
|
indented.append(line)
|
||
|
|
return ''.join(indented)
|