/usr/lib/python2.7/dist-packages/sardana/util/wrap.py is in python-sardana 1.2.0-2.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 | #!/usr/bin/env python
#############################################################################
##
## This file is part of Taurus, a Tango User Interface Library
##
## http://www.tango-controls.org/static/taurus/latest/doc/html/index.html
##
## Copyright 2011 CELLS / ALBA Synchrotron, Bellaterra, Spain
##
## Taurus is free software: you can redistribute it and/or modify
## it under the terms of the GNU Lesser General Public License as published by
## the Free Software Foundation, either version 3 of the License, or
## (at your option) any later version.
##
## Taurus is distributed in the hope that it will be useful,
## but WITHOUT ANY WARRANTY; without even the implied warranty of
## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
## GNU Lesser General Public License for more details.
##
## You should have received a copy of the GNU Lesser General Public License
## along with Taurus. If not, see <http://www.gnu.org/licenses/>.
##
#############################################################################
""""""
__all__ = ["wraps", "wrapped", "is_wrapping", "is_wrapped"]
import weakref
from functools import wraps as _wraps
__WRAPPED = "__wrapped__"
__WRAPPER = "__wrapper__"
def wraps(wrapped, *args, **kwargs):
"""A wrap decorator which stores in the returned function a reference to
the wrapped function (in member '__wrapped__')"""
wrapper = _wraps(wrapped, *args, **kwargs)
setattr(wrapper, __WRAPPED, weakref.ref(wrapped))
setattr(wrapped, __WRAPPER, weakref.ref(wrapper))
return wrapper
def is_wrapping(wrapper):
"""Determines if the given callable is a wrapper for another callable"""
return hasattr(wrapper, __WRAPPED)
def is_wrapped(wrapped):
"""Determines if the given callable is being wrapped by another callable"""
return hasattr(wrapped, __WRAPPER)
def wrapped(wrapper, recursive=True):
"""Returns the wrapped function around the given wrapper. If the given
callable is not "wrapping" any function, the wrapper itself is returned"""
if is_wrapping(wrapper):
_wrapped = wrapper.__wrapped__()
else:
return wrapper
if recursive:
return wrapped(_wrapped)
return _wrapped
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