}
}

func boolCast(v *Value) (b bool, _ error) {
	sToB := func(s string) (bool, error) {
		switch s {
		case "true":
			return true, nil
		case "false":
			return false, nil
		default:
			return false, errCastFailure("cannot cast to Bool")
		}
	}
	switch x := v.value.(type) {
	case bool:
		return x, nil
	case string:
		return sToB(strings.ToLower(x))
	case []byte: