enum EFoo {
  E_001 = 0x00000001,
  E_002 = 0x00000002,
  E_004 = 0x00000004,
  E_008 = 0x00000008,
  E_016 = 0x00000010,
  E_032 = 0x00000020,
  E_064 = 0x00000040,
  E_128 = 0x00000080,
  E_003 = E_002 | E_001,
  E_005 = E_004 | E_001,
  E_006 = E_004 | E_002,
  E_007 = E_004 | E_002 | E_003,
  // kill me now
};