# File lib/racc/statetransitiontable.rb, line 252
    def act2actid(act)
      case act
      when Shift  then act.goto_id
      when Reduce then -act.ruleid
      when Accept then @states.shift_n
      when Error  then @states.reduce_n * -1
      else
        raise "racc: fatal: wrong act type #{act.class} in action table"
      end
    end