class Sass::Tree::Visitors::Perform

def visit_cssimport(node)
  node.resolved_uri = run_interp([node.uri])
  if node.query && !node.query.empty?
    parser = Sass::SCSS::StaticParser.new(run_interp(node.query),
      node.filename, node.options[:importer], node.line)
    node.resolved_query ||= parser.parse_media_query_list
  end
  if node.supports_condition
    node.supports_condition.perform(@environment)
  end
  yield
end