Parse parses a pathname as described by path_resolution(7), except that empty pathnames will be parsed successfully to a Path for which Path.Absolute == Path.Dir == Path.HasComponents() == false.

Builder is similar to strings.Builder, but is used to produce pathnames given path components in reverse order (from leaf to root).

An Iterator represents either a path component in a Path or a terminal iterator indicating that the end of the path has been reached.

Path contains the information contained in a pathname string.