def type_params(self) -> Optional[List[Type]]:
if self.is_list:
assert self.child is not None
return self.child.type_params
if isinstance(self.type, StrawberryUnion):
types = self.type.types
type_vars = [t for t in types if is_type_var(t)]
if type_vars:
return type_vars
if is_type_var(self.type):
return [self.type]
if has_type_var(self.type):
return get_parameters(self.type)
return None
def _get_type_params_for_field(
field_definition: FieldDefinition, ) -> Optional[List[Type]]:
if field_definition.is_list:
child = cast(FieldDefinition, field_definition.child)
return _get_type_params_for_field(child)
type = cast(Type, field_definition.type)
if isinstance(type, StrawberryUnion):
types = type.types
type_vars = [t for t in types if is_type_var(t)]
if type_vars:
return type_vars
if is_type_var(type):
return [type]
if has_type_var(type):
return get_parameters(type)
return None