def __init__(self,ob):
obs = list(getMRO(ob))
for item in obs:
try:
reg = item.__dict__.get('__conform__')
if reg is None and obs==[ob]:
# Make sure we don't obscure a method from the class!
reg = getattr(item,'__conform__',None)
except AttributeError:
raise TypeError(
"Only objects with dictionaries can use this adapter",
ob
)
if reg is not None and not isinstance(reg,conformsRegistry):
raise TypeError(
"Incompatible __conform__ on adapted object", ob, reg
)
reg = ob.__dict__.get('__conform__')
if reg is None:
reg = ob.__conform__ = self.newRegistry(ob)
self.ob = ob
self.reg = reg
def findImplementation(self, subject, protocol, checkSelf=True):
for cls in getMRO(subject):
conf = cls.__dict__.get('__conform__')
if conf is None:
continue
if not isinstance(conf,conformsRegistry):
raise TypeError(
"Incompatible __conform__ in base class", conf, cls
)
if protocol in conf:
return conf[protocol][0](subject)
def __conform__(self,protocol):
for cls in getMRO(self):
conf = cls.__dict__.get('__protocols_provided__',())
if protocol in conf:
return conf[protocol][0](self)
