# File lib/sass/tree/visitors/check_nesting.rb, line 9
  def visit(node)
    if error = @parent && (
        try_send("invalid_#{node_name @parent}_child?", @parent, node) ||
        try_send("invalid_#{node_name node}_parent?", @parent, node))
      raise Sass::SyntaxError.new(error)
    end
    super
  rescue Sass::SyntaxError => e
    e.modify_backtrace(:filename => node.filename, :line => node.line)
    raise e
  end