def __new__(cls, class_name, bases, namespace):
if not bases:
namespace["__dependencies__"] = {}
return type.__new__(cls, class_name, bases, namespace)
check_inheritance(bases, Injector)
ns = {}
for attr in ("__module__", "__doc__", "__weakref__", "__qualname__"):
try:
ns[attr] = namespace.pop(attr)
except KeyError:
pass
for name in namespace:
check_dunder_name(name)
check_attrs_redefinition(name)
dependencies = {}
for base in reversed(bases):
dependencies.update(base.__dependencies__)
for name, dep in namespace.items():
dependencies[name] = make_dependency_spec(name, dep)
check_loops(class_name, dependencies)
check_circles(dependencies)
ns["__dependencies__"] = dependencies
return type.__new__(cls, class_name, bases, ns)
def deep_replace_dependency(injector, current_attr, replace):
spec = make_dependency_spec(current_attr, replace.dependency)
marker, attribute, args, have_defaults = spec
attribute = Attributes(attribute, replace.attrs)
spec = (marker, attribute, args, have_defaults)
for base in injector.__mro__:
if current_attr in base.__dependencies__:
base.__dependencies__[current_attr] = spec
else:
break