if_stmt :: (cond: int): int
  CONSTANT :: 10

  if i := cond, cond + CONSTANT
    return i + CONSTANT
  else if cond - CONSTANT
    return cond - CONSTANT
  else
    return CONSTANT


add_10 :: (size: int): int
  // @todo: before the generation c pass, each stage should have it's own
  //        tree transformation phase, where it yanks functions etc.
  add_20 :: (new_size: int): int
    return 20

  constant :: 20; result := constant + 10
  return result

return_constant :: (): int
  constant :: 10
  return constant

returning_void :: (insert: int)
  return