parse

# File actionview/lib/action_view/template_path.rb, line 28
    def self.parse(virtual)
      if nameidx = virtual.rindex("/")
        prefix = virtual[0, nameidx]
        name = virtual.from(nameidx + 1)
        prefix = prefix[1..] if prefix.start_with?("/")
      else
        prefix = ""
        name = virtual
      end
      partial = name.start_with?("_")
      name = name[1..] if partial
      new name, prefix, partial, virtual
    end