class ReeEnum::IntegerValueEnumMapper

def cast(value)
  enum_value = case value
  when Integer
    @enum.get_values.by_value(value)
  when String
    value = Integer(value, exception: false)
    if !value.nil?
      @enum.get_values.by_value(value)
    end
  when ReeEnum::Value
    @enum.get_values.each.find { _1 == value }
  end
  if enum_value.nil?
    raise ReeMapper::CoercionError.new("should be one of #{enum_inspection}, got `#{truncate(value.inspect)}`")
  end
  enum_value
end

def serialize(value)
  value.value
end