class Prism::Serialize::Loader

def load_constant(index)
  constant = constant_pool[index]
  unless constant
    offset = constant_pool_offset + index * 8
    start = serialized.unpack1("L", offset: offset)
    length = serialized.unpack1("L", offset: offset + 4)
    constant =
      if start.nobits?(1 << 31)
        input.byteslice(start, length).to_sym
      else
        serialized.byteslice(start & ((1 << 31) - 1), length).to_sym
      end
    constant_pool[index] = constant
  end
  constant
end