// The zero Value corresponds to nil.
type Value struct {
	_ [0]func() // disallow ==
	// num holds the value for Kinds Int64, Uint64, Float64, Bool and Duration,
	// the string length for KindString, and nanoseconds since the epoch for KindTime.
	num uint64
	// If any is of type Kind, then the value is in num as described above.
	// If any is of type *time.Location, then the Kind is Time and time.Time value

// io.Writer.Write.
func (h *TextHandler) Handle(_ context.Context, r Record) error {
	return h.commonHandler.handle(r)
}

func appendTextValue(s *handleState, v Value) error {
	switch v.Kind() {
	case KindString:
		s.appendString(v.str())
	case KindTime:
		s.appendTime(v.time())
	case KindAny:
		if tm, ok := v.any.(encoding.TextMarshaler); ok {
			data, err := tm.MarshalText()
			if err != nil {
				return err

	}
	s.buf.WriteByte('"')
	*s.buf = t.AppendFormat(*s.buf, time.RFC3339Nano)
	s.buf.WriteByte('"')
}

func appendJSONValue(s *handleState, v Value) error {
	switch v.Kind() {
	case KindString:
		s.appendString(v.str())
	case KindInt64:
		*s.buf = strconv.AppendInt(*s.buf, v.Int64(), 10)
	case KindUint64:
		*s.buf = strconv.AppendUint(*s.buf, v.Uint64(), 10)
	case KindFloat64:

	case *Slice, *Signature, *Map:
		return check.kindString(typ) + " can only be compared to nil"
	}
	// see if we can extract a more specific error
	var cause string
	comparable(typ, true, nil, func(format string, args ...interface{}) {
		cause = check.sprintf(format, args...)
	})
	return cause
}

// kindString returns the type kind as a string.
func (check *Checker) kindString(typ Type) string {
	switch under(typ).(type) {

	case *Slice, *Signature, *Map:
		return check.kindString(typ) + " can only be compared to nil"
	}
	// see if we can extract a more specific error
	var cause string
	comparable(typ, true, nil, func(format string, args ...interface{}) {
		cause = check.sprintf(format, args...)
	})
	return cause
}

// kindString returns the type kind as a string.
func (check *Checker) kindString(typ Type) string {
	switch under(typ).(type) {

	if !ok {
		return types.MaybeNoSuchOverloadErr(regexVal)
	}
	re, err := regexp.Compile(regex)
	if err != nil {
		return types.NewErr("Illegal regex: %v", err.Error())
	}
	result := re.FindString(str)
	return types.String(result)
}

func findAll(args ...ref.Val) ref.Val {
	argn := len(args)
	if argn < 2 || argn > 3 {
		return types.NoSuchOverloadErr()
	}
	str, ok := args[0].Value().(string)

		arg := list[i]
		if disallow != nil && disallow.FindString(arg) == arg {
			goto Bad
		}
		if allow != nil && allow.FindString(arg) == arg {
			continue Args
		}
		for _, re := range invalid {
			if re.FindString(arg) == arg { // must be complete match
				goto Bad
			}
		}
		for _, re := range valid {
			if re.FindString(arg) == arg { // must be complete match
				continue Args
			}
		}

	for _, featureText := range utilfeature.DefaultFeatureGate.KnownFeatures() {
		// we have to parse this from KnownFeatures, because usage of mutable FeatureGate is not allowed in unit tests
		feature := featureGateRegex.FindString(featureText)
		if strings.Contains(featureText, string(featuregate.Alpha)) && feature != "AllAlpha" {
			alphaFeatures.Insert(feature)
		}

	}

	for name, controller := range NewControllerDescriptors() {

	{"32M", 32 << 20},
}

func TestLongest(t *testing.T) {
	re, err := Compile(`a(|b)`)
	if err != nil {
		t.Fatal(err)
	}
	if g, w := re.FindString("ab"), "a"; g != w {
		t.Errorf("first match was %q, want %q", g, w)
	}
	re.Longest()
	if g, w := re.FindString("ab"), "ab"; g != w {
		t.Errorf("longest match was %q, want %q", g, w)
	}
}

// TestProgramTooLongForBacktrack tests that a regex which is too long

)

// validateWithRegex checks whether the given value matches the regexp r.
func validateWithRegex(path util.Path, val any, r *regexp.Regexp) (errs util.Errors) {
	valStr := fmt.Sprint(val)
	if len(r.FindString(valStr)) != len(valStr) {
		errs = util.AppendErr(errs, fmt.Errorf("invalid value %s: %v", path, val))
		printError(errs.ToError())
	}
	return errs
}