def infer_super(node, context=None):
"""Understand super calls.
There are some restrictions for what can be understood:
* unbounded super (one argument form) is not understood.
* if the super call is not inside a function (classmethod or method),
then the default inference will be used.
* if the super arguments can't be inferred, the default inference
will be used.
"""
if len(node.args) == 1:
# Ignore unbounded super.
raise UseInferenceDefault
scope = node.scope()
if not isinstance(scope, nodes.FunctionDef):
# Ignore non-method uses of super.
raise UseInferenceDefault
if scope.type not in ('classmethod', 'method'):
# Not interested in staticmethods.
raise UseInferenceDefault
cls = scoped_nodes.get_wrapping_class(scope)
if not len(node.args):
mro_pointer = cls
# In we are in a classmethod, the interpreter will fill
# automatically the class as the second argument, not an instance.
if scope.type == 'classmethod':
mro_type = cls
else:
mro_type = cls.instantiate_class()
else:
# TODO(cpopa): support flow control (multiple inference values).
try:
mro_pointer = next(node.args[0].infer(context=context))
except InferenceError:
raise UseInferenceDefault
try:
mro_type = next(node.args[1].infer(context=context))
except InferenceError:
raise UseInferenceDefault
if mro_pointer is util.Uninferable or mro_type is util.Uninferable:
# No way we could understand this.
raise UseInferenceDefault
super_obj = objects.Super(mro_pointer=mro_pointer,
mro_type=mro_type,
self_class=cls,
scope=scope)
super_obj.parent = node
return super_obj
def infer_super(node, context=None):
"""Understand super calls.
There are some restrictions for what can be understood:
* unbounded super (one argument form) is not understood.
* if the super call is not inside a function (classmethod or method),
then the default inference will be used.
* if the super arguments can't be inferred, the default inference
will be used.
"""
if len(node.args) == 1:
# Ignore unbounded super.
raise UseInferenceDefault
scope = node.scope()
if not isinstance(scope, nodes.FunctionDef):
# Ignore non-method uses of super.
raise UseInferenceDefault
if scope.type not in ('classmethod', 'method'):
# Not interested in staticmethods.
raise UseInferenceDefault
cls = scoped_nodes.get_wrapping_class(scope)
if not len(node.args):
mro_pointer = cls
# In we are in a classmethod, the interpreter will fill
# automatically the class as the second argument, not an instance.
if scope.type == 'classmethod':
mro_type = cls
else:
mro_type = cls.instantiate_class()
else:
# TODO(cpopa): support flow control (multiple inference values).
try:
mro_pointer = next(node.args[0].infer(context=context))
except InferenceError:
raise UseInferenceDefault
try:
mro_type = next(node.args[1].infer(context=context))
except InferenceError:
raise UseInferenceDefault
if mro_pointer is util.Uninferable or mro_type is util.Uninferable:
# No way we could understand this.
raise UseInferenceDefault
super_obj = objects.Super(mro_pointer=mro_pointer,
mro_type=mro_type,
self_class=cls,
scope=scope)
super_obj.parent = node
return super_obj
