Method is_optional

mypyc/ir/rtypes.py:1063–1069

(self)

                assert False, f"unexpected item type: {self.item_type}"

    def is_optional(self) -> bool:
        item_type = self.item_type
        if isinstance(item_type, RUnion):
            return True
        elif isinstance(item_type, RVec):
            return item_type.is_optional()
        return False

    def depth(self) -> int:
        item_type = self.item_type