def __init__(self, func, *args, **kwargs):
""" Wrap func in a ArgCache. """
## Keep the original function's name and docstring
## If the original function has any more-complicated attrs,
## don't bother to maintain them; we have our own attrs,
## and merging custom stuff could be dangerous.
if hasattr(func, '__name__'):
self.__name__ = func.__name__
if hasattr(func, '__doc__'):
self.__doc__ = func.__doc__
import inspect
self.argspec = inspect.getargspec(func)
self.func = func
params = self.argspec[0]
extra_name = kwargs.pop('uid_extra', '')
name = describe_func(func) + extra_name
uid = get_uid(func) + extra_name
if self.argspec[1] is not None:
raise ESPError(), "ArgCache does not support varargs."
if self.argspec[2] is not None:
raise ESPError(), "ArgCache does not support keywords."
super(ArgCacheDecorator, self).__init__(name=name,
params=params,
uid=uid,
*args,
**kwargs)
def check_for_instance(func, *args, **kwargs):
""" Protect against stupid Django/Python multiple imports."""
import inspect
params = inspect.getargspec(func)[
0] # FIXME: Make an esp.cache.functions or something
uid = get_uid(func)
# We don't really care about the name yet
return ArgCache.check_for_instance(None, params, uid)