def __init__(self,
name,
bases=(),
attrs=None,
__doc__=None,
__module__=None):
if __module__ is None:
if attrs is not None and attrs.has_key('__module__'):
__module__ = attrs['__module__']
del attrs['__module__']
else:
try:
# Figure out what module defined the interface.
# This is how cPython figures out the module of
# a class, but of course it does it in C. :-/
__module__ = currentframe().f_back.f_globals['__name__']
except (AttributeError, KeyError):
pass
self.__module__ = __module__
for b in bases:
if not isInstance(b, Interface):
raise TypeError, 'Expected base interfaces'
self.__bases__ = bases
if attrs is None: attrs = {}
if attrs.has_key('__doc__'):
if __doc__ is None: __doc__ = attrs['__doc__']
del attrs['__doc__']
if __doc__ is not None:
self.__doc__ = __doc__
else:
self.__doc__ = ""
Element.__init__(self, name, __doc__)
for k, v in attrs.items():
if isInstance(v, Attribute):
v.interface = name
if not v.__name__:
v.__name__ = k
elif isinstance(v, FunctionType):
attrs[k] = fromFunction(v, name)
else:
raise Exceptions.InvalidInterface("Concrete attribute, %s" % k)
self.__attrs = attrs
def _verify(iface, candidate, tentative=0, vtype=None):
"""
Verify that 'candidate' might correctly implements 'iface'.
This involves:
o Making sure the candidate defines all the necessary methods
o Making sure the methods have the correct signature
o Making sure the candidate asserts that it implements the interface
Note that this isn't the same as verifying that the class does
implement the interface.
If optional tentative is true, suppress the "is implemented by" test.
"""
if vtype is "c":
tester = iface.isImplementedByInstancesOf
else:
tester = iface.isImplementedBy
if not tentative and not tester(candidate):
raise DoesNotImplement(iface)
for n, d in iface.namesAndDescriptions(1):
if not hasattr(candidate, n):
raise BrokenImplementation(iface, n)
attr = getattr(candidate, n)
if type(attr) is FunctionType:
# should never get here
meth = fromFunction(attr, n)
elif type(attr) in MethodTypes:
meth = fromMethod(attr, n)
else:
continue # must be an attribute...
d = d.getSignatureInfo()
meth = meth.getSignatureInfo()
mess = _incompat(d, meth)
if mess:
raise BrokenMethodImplementation(n, mess)
return 1
def _verify(iface, candidate, tentative=0, vtype=None):
"""
Verify that 'candidate' might correctly implements 'iface'.
This involves:
o Making sure the candidate defines all the necessary methods
o Making sure the methods have the correct signature
o Making sure the candidate asserts that it implements the interface
Note that this isn't the same as verifying that the class does
implement the interface.
If optional tentative is true, suppress the "is implemented by" test.
"""
if vtype is 'c':
tester = iface.isImplementedByInstancesOf
else:
tester = iface.isImplementedBy
if not tentative and not tester(candidate):
raise DoesNotImplement(iface)
for n, d in iface.namesAndDescriptions(1):
if not hasattr(candidate, n):
raise BrokenImplementation(iface, n)
attr = getattr(candidate, n)
if type(attr) is FunctionType:
# should never get here
meth = fromFunction(attr, n)
elif type(attr) in MethodTypes:
meth = fromMethod(attr, n)
else:
continue # must be an attribute...
d = d.getSignatureInfo()
meth = meth.getSignatureInfo()
mess = _incompat(d, meth)
if mess:
raise BrokenMethodImplementation(n, mess)
return 1
def __init__(self, name, bases=(), attrs=None, __doc__=None,
__module__=None):
if __module__ is None:
if attrs is not None and attrs.has_key('__module__'):
__module__ = attrs['__module__']
del attrs['__module__']
else:
try:
# Figure out what module defined the interface.
# This is how cPython figures out the module of
# a class, but of course it does it in C. :-/
__module__ = currentframe().f_back.f_globals['__name__']
except (AttributeError, KeyError):
pass
self.__module__ = __module__
for b in bases:
if not isInstance(b, Interface):
raise TypeError, 'Expected base interfaces'
self.__bases__=bases
if attrs is None: attrs={}
if attrs.has_key('__doc__'):
if __doc__ is None: __doc__=attrs['__doc__']
del attrs['__doc__']
if __doc__ is not None:
self.__doc__=__doc__
else:
self.__doc__ = ""
Element.__init__(self, name, __doc__)
for k, v in attrs.items():
if isInstance(v, Attribute):
v.interface=name
if not v.__name__:
v.__name__ = k
elif isinstance(v, FunctionType):
attrs[k]=fromFunction(v, name)
else:
raise Exceptions.InvalidInterface(
"Concrete attribute, %s" % k)
self.__attrs = attrs