class Lookup(Node):
def __init__(self, *path):
self.path = list(path)
self.reference = Reference(self.path)
def normalize(self):
if len(self.path) is not 1:
raise ConversionError('You are attempting to use a non-normal '
'lookup (%s) as a normal lookup.'
% '.'.join(self.path))
return self.path[0]
def showhead(self):
return 'Lookup %s' % '.'.join(self.path)
def evaluate(self, settings):
return settings.eval(self.reference.get(settings.context))
def __init__(self, *path):
self.path = list(path)
self.reference = Reference(self.path)