module Mail::RFC2045

def _nt_token
  start_index = index
  if node_cache[:token].has_key?(index)
    cached = node_cache[:token][index]
    @index = cached.interval.end if cached
    return cached
  end
  i0 = index
  if has_terminal?('\G[\\x21-\\x27]', true, index)
    r1 = true
    @index += 1
  else
    r1 = nil
  end
  if r1
    r0 = r1
  else
    if has_terminal?('\G[\\x2a-\\x2b]', true, index)
      r2 = true
      @index += 1
    else
      r2 = nil
    end
    if r2
      r0 = r2
    else
      if has_terminal?('\G[\\x2c-\\x2e]', true, index)
        r3 = true
        @index += 1
      else
        r3 = nil
      end
      if r3
        r0 = r3
      else
        if has_terminal?('\G[\\x30-\\x39]', true, index)
          r4 = true
          @index += 1
        else
          r4 = nil
        end
        if r4
          r0 = r4
        else
          if has_terminal?('\G[\\x41-\\x5a]', true, index)
            r5 = true
            @index += 1
          else
            r5 = nil
          end
          if r5
            r0 = r5
          else
            if has_terminal?('\G[\\x5e-\\x7e]', true, index)
              r6 = true
              @index += 1
            else
              r6 = nil
            end
            if r6
              r0 = r6
            else
              @index = i0
              r0 = nil
            end
          end
        end
      end
    end
  end
  node_cache[:token][start_index] = r0
  r0
end