[docs]class ModuleDispatchRegistrationError(Exception):
"""Raised when there is a problem registering dispatched functions for a
module"""
def module_dispatch_registrar(module):
def dispatch_wrapper(obj_type):
def wrapper(func):
func_name = func.__name__
try:
dispatch_registrar = getattr(module, func_name)
return dispatch_registrar.register(obj_type)(func)
except AttributeError as ex:
raise ModuleDispatchRegistrationError(
('`{module}` does not contain a single-dispatchable '
'function named `{func}`. The module being registered '
'was not implemented correctly!').format(
func=func_name, module=module.__name__)) from ex
return wrapper
return dispatch_wrapper