class Opal::Nodes::CallNode

def initialize(*)
  super
  @recvr, @meth, *args = *@sexp
  *rest, last_arg = *args
  if last_arg && %i[iter block_pass].include?(last_arg.type)
    @iter = last_arg
    args = rest
  else
    @iter = nil
  end
  @arglist = s(:arglist, *args)
end