def wrap(self, fn, ofn):
'''Wraps the function to provide conversion.'''
argnames=get_function_argument_names(ofn)
@wraps(fn)
def wrapper(*args, **kw):
'''Wrapper to implement actual argument and return value
conversion. The @wraps decorator is required to preserve
function module, name and docstring.'''
cooperation=self.cooperate(ofn.__annotations__)
# Convert positional arguments
args=[self.convertArgument(fn, cooperation, name, value) for name, value in zip(argnames, args)]
# Convert keyword arguments
kw=dict([(name, self.convertArgument(fn, cooperation, name, value)) for name, value in kw.items()])
# Call original function
return_value=fn(*args, **kw)
# Convert return value
return self.convertArgument(fn, cooperation, 'return', return_value)
return wrapper
def wrap(self, fn, ofn):
'''Wraps the function to provide runtime type checking.'''
argnames=get_function_argument_names(ofn)
@wraps(fn)
def wrapper(*args, **kw):
'''Wrapper to implement actual argument and return value
type checking. The @wraps decorator is required to preserve
function module, name and docstring.'''
cooperation=self.cooperate(ofn.__annotations__)
# Validate positional arguments
for name, value in zip(argnames, args):
self.checkArgument(fn, cooperation, name, value)
# Validate keyword arguments
for name, value in kw.items():
self.checkArgument(fn, cooperation, name, value)
# Call original function
return_value=fn(*args, **kw)
# Validate return value
self.checkArgument(fn, cooperation, 'return', return_value)
# Returns with the return value of the original function
return return_value
return wrapper
