def _compare()

in antlir/rpm/allowed_versions/envra.py [0:0]

• 24 lines of code
• 9 McCabe index (conditional complexity)

    def _compare(self, other: "SortableENVRA") -> int:
        # It makes no sense to compare wildcard with non-wildcard because it
        # amounts to comparing different data types.  All elements of a
        # `SortableENVRA` collections should have wildcards in this field,
        # or the field should be concrete throughout.
        if (self.name is None) ^ (other.name is None):
            raise TypeError(
                f"Cannot compare concrete name with wildcard: {self} {other}"
            )
        if (self.arch is None) ^ (other.arch is None):
            raise TypeError(
                f"Cannot compare concrete arch with wildcard: {self} {other}"
            )

        # Sort lexicographically by name, then architecture
        self_key = (self.name, self.arch)
        other_key = (other.name, other.arch)

        if self_key > other_key:
            return 1
        elif self_key == other_key:
            # Same rationale as for the `.name` test above.
            if (self.epoch is None) ^ (other.epoch is None):
                raise TypeError(
                    f"Cannot compare int epoch with wildcard: {self} {other}"
                )
            return compare_rpm_versions(
                self._as_rpm_metadata(), other._as_rpm_metadata()
            )
        elif self_key < other_key:
            return -1

        raise AssertionError(f"Bad name/arch keys: {self_key} {other_key}")