class SassC::Engine

def output_style
  @output_style ||= case @options.fetch(:style, :nested).to_sym
                    when :nested, :expanded, :compact, :sass_style_nested, :sass_style_expanded, :sass_style_compact
                      :expanded
                    when :compressed, :sass_style_compressed
                      :compressed
                    else
                      raise InvalidStyleError
                    end
end