class Sass::SCSS::Parser

def import_arg
  start_pos = source_position
  return unless (str = string) || (uri = tok?(/url\(/i))
  if uri
    str = sass_script(:parse_string)
    ss
    supports = supports_clause
    ss
    media = media_query_list
    ss
    return node(Tree::CssImportNode.new(str, media.to_a, supports), start_pos)
  end
  ss
  supports = supports_clause
  ss
  media = media_query_list
  if str =~ %r{^(https?:)?//} || media || supports || use_css_import?
    return node(
      Sass::Tree::CssImportNode.new(
        Sass::Script::Value::String.quote(str), media.to_a, supports), start_pos)
  end
  node(Sass::Tree::ImportNode.new(str.strip), start_pos)
end