class Racc::LogFileGenerator

def outact(f, t, act)
  case act
  when Shift
    f.printf "  %-12s  shift, and go to state %d\n",
             t.to_s, act.goto_id
  when Reduce
    f.printf "  %-12s  reduce using rule %d (%s)\n",
             t.to_s, act.ruleid, act.rule.target.to_s
  when Accept
    f.printf "  %-12s  accept\n", t.to_s
  when Error
    f.printf "  %-12s  error\n", t.to_s
  else
    raise "racc: fatal: wrong act for outact: act=#{act}(#{act.class})"
  end
end