class RuboCop::ResultCache

def self.cache_root(config_store)
  root = config_store.for('.').for_all_cops['CacheRootDirectory']
  root ||= if ENV.key?('XDG_CACHE_HOME')
             # Include user ID in the path to make sure the user has write
             # access.
             File.join(ENV['XDG_CACHE_HOME'], Process.uid.to_s)
           else
             File.join(ENV['HOME'], '.cache')
           end
  File.join(root, 'rubocop_cache')
end