def find_single_property(self, name):
result = self.find_property(name)
if len(result) < 1:
raise exceptions.NoPropertyFound(name)
elif len(result) > 1:
raise exceptions.AmbiguousPropertyNameError(name)
return result[0]
def find_static_property(self, name):
def prop_func(cls):
prop = cls.properties.get(name)
if prop is not None and prop.usage == 'Static':
return prop
result = self._choose_symbol(prop_func)
if len(result) < 1:
raise exceptions.NoPropertyFound(name)
elif len(result) > 1:
raise exceptions.AmbiguousPropertyNameError(name)
return result[0]
def find_single_property(self, name):
result = None
parents = None
gen = helpers.traverse(self)
while True:
try:
mc = gen.send(parents)
if name in mc.properties:
if result and result != mc:
raise exceptions.AmbiguousPropertyNameError(name)
result = mc
parents = []
else:
parents = mc.parents(self)
except StopIteration:
return result
def get_property(self, name, caller_class=None):
start_type, derived = self.__type, False
if caller_class is not None and caller_class.is_compatible(self):
start_type, derived = caller_class, True
if name in start_type.properties:
return self.cast(start_type)._get_property_value(name)
else:
declared_properties = start_type.find_property(name)
if len(declared_properties) == 1:
return self.cast(declared_properties[0]).__properties[name]
elif len(declared_properties) > 1:
raise exceptions.AmbiguousPropertyNameError(name)
elif derived:
return self.cast(caller_class)._get_property_value(name)
else:
raise exceptions.PropertyReadError(name, start_type)