class Racc::Parser

def racc_reduce(toks, sim, tstack, vstack)
  out = @racc_debug_out
  out.print 'reduce '
  if toks.empty?
    out.print ' <none>'
  else
    toks.each {|t| out.print ' ', racc_token2str(t) }
  end
  out.puts " --> #{racc_token2str(sim)}"
  racc_print_stacks tstack, vstack
  @racc_debug_out.puts
end