class Racc::LogFileGenerator

def output_useless(out)
  @grammar.each do |rl|
    if rl.useless?
      out.printf "rule %d (%s) never reduced\n",
                 rl.ident, rl.target.to_s
    end
  end
  @grammar.each_nonterminal do |t|
    if t.useless?
      out.printf "useless nonterminal %s\n", t.to_s
    end
  end
end