def iswrapped(obj): #{{{
if _ism(obj) or _isf(obj):
return False
elif hasattr(obj, '__call__') and _ism(obj.__call__):
return False
else:
return True
def callableobj(obj): #{{{
if not iscallable(obj):
return None
if _ism(obj) or _isf(obj):
return obj
elif hasattr(obj, '__call__') and _ism(obj.__call__):
return obj.__call__
else:
obj = callable_wrapper(obj)
return obj
def subscribe(iobj, target, msgobj=Message, argsobj=Arguments, ftype=None, choosefunc=None): #{{{
_validate_subscribekw(iobj, target, msgobj, argsobj, ftype, choosefunc)
i = issue(iobj, msgobj, argsobj)
if i is None:
if ftype:
raise TypeError('Please subscribe an issue first.')
i = Signal(target)
cobj = callableobj(target)
numargs = i.func.numargs
if _isf(cobj) and numargs != 1:
raise ValueError("'target' argument is a function: it must accept exactly 1 argument; instead got %i" %numargs)
elif _ism(cobj) and numargs != 2:
raise ValueError("'target' argument is a method: it must accept exactly 2 arguments; instead got %i" %numargs)
smsg = _siglist.get(iobj, {})
sargs = smsg.get(msgobj, {})
sargs.update({argsobj: i})
smsg.update({msgobj: sargs})
_siglist.update({iobj: smsg})
elif not ftype or ftype == 'after':
i.connect(target)
elif ftype == 'before':
i.connect(before=[target])
elif ftype == 'around':
i.connect(around=[target])
elif ftype == 'onreturn':
i.connect(onreturn=[target])
elif ftype == 'choose':
i.connect(choose=[(choosefunc, target)])
return i
def methodtype(obj): #{{{
if not _ism(obj):
return METHODTYPE_NOTMETHOD
elif obj.im_self is None:
if obj.im_class is None:
return METHODTYPE_UNBOUND
return METHODTYPE_CLASS
else:
return METHODTYPE_INSTANCE
def wrap(self, func): #{{{
if not iscallable(func):
raise TypeError('Argument must be a valid callable object')
newfunc = func(self._newcall)
if not iscallable(newfunc):
raise TypeError('Return value of wrapping callable must be a valid callable object')
if not _ism(newfunc):
newfunc = method(newfunc, self, self.__class__)
self._newcall = newfunc
def iscallable(obj): #{{{
if not callable(obj):
return False
elif _ism(obj) or _isf(obj):
return True
elif isinstance(obj, type(str.__call__)):
return False
elif hasattr(obj, '__call__'):
return iscallable(obj.__call__)
return False
def num_static_args(obj): #{{{
if not iscallable(obj):
return -1, None
if _ism(obj):
obj = obj.im_func
if isinstance(obj, _CallableWrapper):
return obj._numargs, obj._maxargs
isc = isclass(obj)
if not _isf(obj) and not isc:
obj = obj.__call__
if not _ism(obj):
return -1, None
argspec = cgetargspec(obj)
l, d = len(argspec[0]), argspec[3]
max = l
if argspec[1]:
max = None
if d:
l -= len(d)
if isc:
l -= 1
return l, max
def num_static_args(obj): #{{{
if not iscallable(obj):
return -1
if _ism(obj):
obj = obj.im_func
if isinstance(obj, CallableWrapper):
return obj._numargs
if not _isf(obj):
obj = obj.__call__
argspec = getargspec(obj)
l, d = len(argspec[0]), argspec[3]
if d:
l -= len(d)
return l
