func (d *Decoder) valueFromToml(mtype reflect.Type, tval interface{}, mval1 *reflect.Value) (reflect.Value, error) {
	if mtype.Kind() == reflect.Ptr {
		return d.unwrapPointer(mtype, tval, mval1)
	}
	switch t := tval.(type) {
	case *Tree:
		var mval11 *reflect.Value
		if mtype.Kind() == reflect.Struct {
			mval11 = mval1
		}
		if isTree(mtype) {
			return d.valueFromTree(mtype, t, mval11)
		}
		if mtype.Kind() == reflect.Interface {
			if mval1 == nil || mval1.IsNil() {
				return d.valueFromTree(reflect.TypeOf(map[string]interface{}{}), t, nil)
			} else {
				return d.valueFromToml(mval1.Elem().Type(), t, nil)
			}
		}
		return reflect.ValueOf(nil), fmt.Errorf("Can't convert %v(%T) to a tree", tval, tval)
	case []*Tree:
		if isTreeSequence(mtype) {
			return d.valueFromTreeSlice(mtype, t)
		}
		if mtype.Kind() == reflect.Interface {
			if mval1 == nil || mval1.IsNil() {
				return d.valueFromTreeSlice(reflect.TypeOf([]map[string]interface{}{}), t)
			} else {
				ival := mval1.Elem()
				return d.valueFromToml(mval1.Elem().Type(), t, &ival)
			}
		}
		return reflect.ValueOf(nil), fmt.Errorf("Can't convert %v(%T) to trees", tval, tval)
	case []interface{}:
		d.visitor.visit()
		if isOtherSequence(mtype) {
			return d.valueFromOtherSlice(mtype, t)
		}
		if mtype.Kind() == reflect.Interface {
			if mval1 == nil || mval1.IsNil() {
				return d.valueFromOtherSlice(reflect.TypeOf([]interface{}{}), t)
			} else {
				ival := mval1.Elem()
				return d.valueFromToml(mval1.Elem().Type(), t, &ival)
			}
		}
		return reflect.ValueOf(nil), fmt.Errorf("Can't convert %v(%T) to a slice", tval, tval)
	default:
		d.visitor.visit()
		mvalPtr := reflect.New(mtype)
		if isCustomUnmarshaler(mvalPtr.Type()) {
			if err := callCustomUnmarshaler(mvalPtr, tval); err != nil {
				return reflect.ValueOf(nil), fmt.Errorf("unmarshal toml: %v", err)
			}
			return mvalPtr.Elem(), nil
		}
		if isTextUnmarshaler(mvalPtr.Type()) && !isTimeType(mtype) {
			if err := d.unmarshalText(tval, mvalPtr); err != nil {
				return reflect.ValueOf(nil), fmt.Errorf("unmarshal text: %v", err)
			}
			return mvalPtr.Elem(), nil
		}
		switch mtype.Kind() {
		case reflect.Bool, reflect.Struct:
			val := reflect.ValueOf(tval)
			switch val.Type() {
			case localDateType:
				localDate := val.Interface().(LocalDate)
				switch mtype {
				case timeType:
					return reflect.ValueOf(time.Date(localDate.Year, localDate.Month, localDate.Day, 0, 0, 0, 0, time.Local)), nil
				}
			case localDateTimeType:
				localDateTime := val.Interface().(LocalDateTime)
				switch mtype {
				case timeType:
					return reflect.ValueOf(time.Date(
						localDateTime.Date.Year,
						localDateTime.Date.Month,
						localDateTime.Date.Day,
						localDateTime.Time.Hour,
						localDateTime.Time.Minute,
						localDateTime.Time.Second,
						localDateTime.Time.Nanosecond,
						time.Local)), nil
				}
			}
			if !val.Type().ConvertibleTo(mtype) {
				return reflect.ValueOf(nil), fmt.Errorf("Can't convert %v(%T) to %v", tval, tval, mtype.String())
			}
			return val.Convert(mtype), nil
		case reflect.String:
			val := reflect.ValueOf(tval)
			if !val.Type().ConvertibleTo(mtype) || val.Kind() == reflect.Int64 {
				return reflect.ValueOf(nil), fmt.Errorf("Can't convert %v(%T) to %v", tval, tval, mtype.String())
			}
			return val.Convert(mtype), nil
		case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
			val := reflect.ValueOf(tval)
			if mtype.Kind() == reflect.Int64 && mtype == reflect.TypeOf(time.Duration(1)) && val.Kind() == reflect.String {
				d, err := time.ParseDuration(val.String())
				if err != nil {
					return reflect.ValueOf(nil), fmt.Errorf("Can't convert %v(%T) to %v. %s", tval, tval, mtype.String(), err)
				}
				return reflect.ValueOf(d), nil
			}
			if !val.Type().ConvertibleTo(mtype) || val.Kind() == reflect.Float64 {
				return reflect.ValueOf(nil), fmt.Errorf("Can't convert %v(%T) to %v", tval, tval, mtype.String())
			}
			if reflect.Indirect(reflect.New(mtype)).OverflowInt(val.Convert(reflect.TypeOf(int64(0))).Int()) {
				return reflect.ValueOf(nil), fmt.Errorf("%v(%T) would overflow %v", tval, tval, mtype.String())
			}
			return val.Convert(mtype), nil
		case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr:
			val := reflect.ValueOf(tval)
			if !val.Type().ConvertibleTo(mtype) || val.Kind() == reflect.Float64 {
				return reflect.ValueOf(nil), fmt.Errorf("Can't convert %v(%T) to %v", tval, tval, mtype.String())
			}
			if val.Convert(reflect.TypeOf(int(1))).Int() < 0 {
				return reflect.ValueOf(nil), fmt.Errorf("%v(%T) is negative so does not fit in %v", tval, tval, mtype.String())
			}
			if reflect.Indirect(reflect.New(mtype)).OverflowUint(val.Convert(reflect.TypeOf(uint64(0))).Uint()) {
				return reflect.ValueOf(nil), fmt.Errorf("%v(%T) would overflow %v", tval, tval, mtype.String())
			}
			return val.Convert(mtype), nil
		case reflect.Float32, reflect.Float64:
			val := reflect.ValueOf(tval)
			if !val.Type().ConvertibleTo(mtype) || val.Kind() == reflect.Int64 {
				return reflect.ValueOf(nil), fmt.Errorf("Can't convert %v(%T) to %v", tval, tval, mtype.String())
			}
			if reflect.Indirect(reflect.New(mtype)).OverflowFloat(val.Convert(reflect.TypeOf(float64(0))).Float()) {
				return reflect.ValueOf(nil), fmt.Errorf("%v(%T) would overflow %v", tval, tval, mtype.String())
			}
			return val.Convert(mtype), nil
		case reflect.Interface:
			if mval1 == nil || mval1.IsNil() {
				return reflect.ValueOf(tval), nil
			} else {
				ival := mval1.Elem()
				return d.valueFromToml(mval1.Elem().Type(), t, &ival)
			}
		case reflect.Slice, reflect.Array:
			if isOtherSequence(mtype) && isOtherSequence(reflect.TypeOf(t)) {
				return d.valueFromOtherSliceI(mtype, t)
			}
			return reflect.ValueOf(nil), fmt.Errorf("Can't convert %v(%T) to %v(%v)", tval, tval, mtype, mtype.Kind())
		default:
			return reflect.ValueOf(nil), fmt.Errorf("Can't convert %v(%T) to %v(%v)", tval, tval, mtype, mtype.Kind())
		}
	}
}
Convert toml value to marshal value, using marshal type. When mval1 is non-nil
and the given type is a struct value, merge fields into it.
package toml
import (
	"bytes"
	"encoding"
	"errors"
	"fmt"
	"io"
	"reflect"
	"sort"
	"strconv"
	"strings"
	"time"
)
const (
	tagFieldName    = "toml"
	tagFieldComment = "comment"
	tagCommented    = "commented"
	tagMultiline    = "multiline"
	tagLiteral      = "literal"
	tagDefault      = "default"
)
type tomlOpts struct {
	name         string
	nameFromTag  bool
	comment      string
	commented    bool
	multiline    bool
	literal      bool
	include      bool
	omitempty    bool
	defaultValue string
}
type encOpts struct {
	quoteMapKeys            bool
	arraysOneElementPerLine bool
}
var encOptsDefaults = encOpts{
	quoteMapKeys: false,
}
type annotation struct {
	tag          string
	comment      string
	commented    string
	multiline    string
	literal      string
	defaultValue string
}
var annotationDefault = annotation{
	tag:          tagFieldName,
	comment:      tagFieldComment,
	commented:    tagCommented,
	multiline:    tagMultiline,
	literal:      tagLiteral,
	defaultValue: tagDefault,
}
type MarshalOrder int
const (
	OrderAlphabetical MarshalOrder = iota + 1
	OrderPreserve
)
var timeType = reflect.TypeOf(time.Time{})
var marshalerType = reflect.TypeOf(new(Marshaler)).Elem()
var unmarshalerType = reflect.TypeOf(new(Unmarshaler)).Elem()
var textMarshalerType = reflect.TypeOf(new(encoding.TextMarshaler)).Elem()
var textUnmarshalerType = reflect.TypeOf(new(encoding.TextUnmarshaler)).Elem()
var localDateType = reflect.TypeOf(LocalDate{})
var localTimeType = reflect.TypeOf(LocalTime{})
var localDateTimeType = reflect.TypeOf(LocalDateTime{})
var mapStringInterfaceType = reflect.TypeOf(map[string]interface{}{})
func isPrimitive(mtype reflect.Type) bool {
	switch mtype.Kind() {
	case reflect.Ptr:
		return isPrimitive(mtype.Elem())
	case reflect.Bool:
		return true
	case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
		return true
	case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
		return true
	case reflect.Float32, reflect.Float64:
		return true
	case reflect.String:
		return true
	case reflect.Struct:
		return isTimeType(mtype)
	default:
		return false
	}
}
func isTimeType(mtype reflect.Type) bool {
	return mtype == timeType || mtype == localDateType || mtype == localDateTimeType || mtype == localTimeType
}
func isTreeSequence(mtype reflect.Type) bool {
	switch mtype.Kind() {
	case reflect.Ptr:
		return isTreeSequence(mtype.Elem())
	case reflect.Slice, reflect.Array:
		return isTree(mtype.Elem())
	default:
		return false
	}
}
func isCustomMarshalerSequence(mtype reflect.Type) bool {
	switch mtype.Kind() {
	case reflect.Ptr:
		return isCustomMarshalerSequence(mtype.Elem())
	case reflect.Slice, reflect.Array:
		return isCustomMarshaler(mtype.Elem()) || isCustomMarshaler(reflect.New(mtype.Elem()).Type())
	default:
		return false
	}
}
func isTextMarshalerSequence(mtype reflect.Type) bool {
	switch mtype.Kind() {
	case reflect.Ptr:
		return isTextMarshalerSequence(mtype.Elem())
	case reflect.Slice, reflect.Array:
		return isTextMarshaler(mtype.Elem()) || isTextMarshaler(reflect.New(mtype.Elem()).Type())
	default:
		return false
	}
}
func isOtherSequence(mtype reflect.Type) bool {
	switch mtype.Kind() {
	case reflect.Ptr:
		return isOtherSequence(mtype.Elem())
	case reflect.Slice, reflect.Array:
		return !isTreeSequence(mtype)
	default:
		return false
	}
}
func isTree(mtype reflect.Type) bool {
	switch mtype.Kind() {
	case reflect.Ptr:
		return isTree(mtype.Elem())
	case reflect.Map:
		return true
	case reflect.Struct:
		return !isPrimitive(mtype)
	default:
		return false
	}
}
func isCustomMarshaler(mtype reflect.Type) bool {
	return mtype.Implements(marshalerType)
}
func callCustomMarshaler(mval reflect.Value) ([]byte, error) {
	return mval.Interface().(Marshaler).MarshalTOML()
}
func isTextMarshaler(mtype reflect.Type) bool {
	return mtype.Implements(textMarshalerType) && !isTimeType(mtype)
}
func callTextMarshaler(mval reflect.Value) ([]byte, error) {
	return mval.Interface().(encoding.TextMarshaler).MarshalText()
}
func isCustomUnmarshaler(mtype reflect.Type) bool {
	return mtype.Implements(unmarshalerType)
}
func callCustomUnmarshaler(mval reflect.Value, tval interface{}) error {
	return mval.Interface().(Unmarshaler).UnmarshalTOML(tval)
}
func isTextUnmarshaler(mtype reflect.Type) bool {
	return mtype.Implements(textUnmarshalerType)
}
func callTextUnmarshaler(mval reflect.Value, text []byte) error {
	return mval.Interface().(encoding.TextUnmarshaler).UnmarshalText(text)
}
type Marshaler interface {
	MarshalTOML() ([]byte, error)
}
type Unmarshaler interface {
	UnmarshalTOML(interface{}) error
}
func Marshal(v interface{}) ([]byte, error) {
	return NewEncoder(nil).marshal(v)
}
type Encoder struct {
	w io.Writer
	encOpts
	annotation
	line            int
	col             int
	order           MarshalOrder
	promoteAnon     bool
	compactComments bool
	indentation     string
}
func NewEncoder(w io.Writer) *Encoder {
	return &Encoder{
		w:           w,
		encOpts:     encOptsDefaults,
		annotation:  annotationDefault,
		line:        0,
		col:         1,
		order:       OrderAlphabetical,
		indentation: "  ",
	}
}
func (e *Encoder) Encode(v interface{}) error {
	b, err := e.marshal(v)
	if err != nil {
		return err
	}
	if _, err := e.w.Write(b); err != nil {
		return err
	}
	return nil
}
func (e *Encoder) QuoteMapKeys(v bool) *Encoder {
	e.quoteMapKeys = v
	return e
}
func (e *Encoder) ArraysWithOneElementPerLine(v bool) *Encoder {
	e.arraysOneElementPerLine = v
	return e
}
func (e *Encoder) Order(ord MarshalOrder) *Encoder {
	e.order = ord
	return e
}
func (e *Encoder) Indentation(indent string) *Encoder {
	e.indentation = indent
	return e
}
func (e *Encoder) SetTagName(v string) *Encoder {
	e.tag = v
	return e
}
func (e *Encoder) SetTagComment(v string) *Encoder {
	e.comment = v
	return e
}
func (e *Encoder) SetTagCommented(v string) *Encoder {
	e.commented = v
	return e
}
func (e *Encoder) SetTagMultiline(v string) *Encoder {
	e.multiline = v
	return e
}
func (e *Encoder) PromoteAnonymous(promote bool) *Encoder {
	e.promoteAnon = promote
	return e
}
func (e *Encoder) CompactComments(cc bool) *Encoder {
	e.compactComments = cc
	return e
}
func (e *Encoder) marshal(v interface{}) ([]byte, error) {
	for _, char := range e.indentation {
		if !isSpace(char) {
			return []byte{}, fmt.Errorf("invalid indentation: must only contains space or tab characters")
		}
	}
	mtype := reflect.TypeOf(v)
	if mtype == nil {
		return []byte{}, errors.New("nil cannot be marshaled to TOML")
	}
	switch mtype.Kind() {
	case reflect.Struct, reflect.Map:
	case reflect.Ptr:
		if mtype.Elem().Kind() != reflect.Struct {
			return []byte{}, errors.New("Only pointer to struct can be marshaled to TOML")
		}
		if reflect.ValueOf(v).IsNil() {
			return []byte{}, errors.New("nil pointer cannot be marshaled to TOML")
		}
	default:
		return []byte{}, errors.New("Only a struct or map can be marshaled to TOML")
	}
	sval := reflect.ValueOf(v)
	if isCustomMarshaler(mtype) {
		return callCustomMarshaler(sval)
	}
	if isTextMarshaler(mtype) {
		return callTextMarshaler(sval)
	}
	t, err := e.valueToTree(mtype, sval)
	if err != nil {
		return []byte{}, err
	}
	var buf bytes.Buffer
	_, err = t.writeToOrdered(&buf, "", "", 0, e.arraysOneElementPerLine, e.order, e.indentation, e.compactComments, false)
	return buf.Bytes(), err
}
func (e *Encoder) nextTree() *Tree {
	return newTreeWithPosition(Position{Line: e.line, Col: 1})
}
func (e *Encoder) valueToTree(mtype reflect.Type, mval reflect.Value) (*Tree, error) {
	if mtype.Kind() == reflect.Ptr {
		return e.valueToTree(mtype.Elem(), mval.Elem())
	}
	tval := e.nextTree()
	switch mtype.Kind() {
	case reflect.Struct:
		switch mval.Interface().(type) {
		case Tree:
			reflect.ValueOf(tval).Elem().Set(mval)
		default:
			for i := 0; i < mtype.NumField(); i++ {
				mtypef, mvalf := mtype.Field(i), mval.Field(i)
				opts := tomlOptions(mtypef, e.annotation)
				if opts.include && ((mtypef.Type.Kind() != reflect.Interface && !opts.omitempty) || !isZero(mvalf)) {
					val, err := e.valueToToml(mtypef.Type, mvalf)
					if err != nil {
						return nil, err
					}
					if tree, ok := val.(*Tree); ok && mtypef.Anonymous && !opts.nameFromTag && !e.promoteAnon {
						e.appendTree(tval, tree)
					} else {
						val = e.wrapTomlValue(val, tval)
						tval.SetPathWithOptions([]string{opts.name}, SetOptions{
							Comment:   opts.comment,
							Commented: opts.commented,
							Multiline: opts.multiline,
							Literal:   opts.literal,
						}, val)
					}
				}
			}
		}
	case reflect.Map:
		keys := mval.MapKeys()
		if e.order == OrderPreserve && len(keys) > 0 {
			typ := keys[0].Type()
			kind := keys[0].Kind()
			if kind == reflect.String {
				ikeys := make([]string, len(keys))
				for i := range keys {
					ikeys[i] = keys[i].Interface().(string)
				}
				sort.Strings(ikeys)
				for i := range ikeys {
					keys[i] = reflect.ValueOf(ikeys[i]).Convert(typ)
				}
			}
		}
		for _, key := range keys {
			mvalf := mval.MapIndex(key)
			if (mtype.Elem().Kind() == reflect.Ptr || mtype.Elem().Kind() == reflect.Interface) && mvalf.IsNil() {
				continue
			}
			val, err := e.valueToToml(mtype.Elem(), mvalf)
			if err != nil {
				return nil, err
			}
			val = e.wrapTomlValue(val, tval)
			if e.quoteMapKeys {
				keyStr, err := tomlValueStringRepresentation(key.String(), "", "", e.order, e.arraysOneElementPerLine)
				if err != nil {
					return nil, err
				}
				tval.SetPath([]string{keyStr}, val)
			} else {
				tval.SetPath([]string{key.String()}, val)
			}
		}
	}
	return tval, nil
}
func (e *Encoder) valueToTreeSlice(mtype reflect.Type, mval reflect.Value) ([]*Tree, error) {
	tval := make([]*Tree, mval.Len(), mval.Len())
	for i := 0; i < mval.Len(); i++ {
		val, err := e.valueToTree(mtype.Elem(), mval.Index(i))
		if err != nil {
			return nil, err
		}
		tval[i] = val
	}
	return tval, nil
}
func (e *Encoder) valueToOtherSlice(mtype reflect.Type, mval reflect.Value) (interface{}, error) {
	tval := make([]interface{}, mval.Len(), mval.Len())
	for i := 0; i < mval.Len(); i++ {
		val, err := e.valueToToml(mtype.Elem(), mval.Index(i))
		if err != nil {
			return nil, err
		}
		tval[i] = val
	}
	return tval, nil
}
func (e *Encoder) valueToToml(mtype reflect.Type, mval reflect.Value) (interface{}, error) {
	if mtype.Kind() == reflect.Ptr {
		switch {
		case isCustomMarshaler(mtype):
			return callCustomMarshaler(mval)
		case isTextMarshaler(mtype):
			b, err := callTextMarshaler(mval)
			return string(b), err
		default:
			return e.valueToToml(mtype.Elem(), mval.Elem())
		}
	}
	if mtype.Kind() == reflect.Interface {
		return e.valueToToml(mval.Elem().Type(), mval.Elem())
	}
	switch {
	case isCustomMarshaler(mtype):
		return callCustomMarshaler(mval)
	case isTextMarshaler(mtype):
		b, err := callTextMarshaler(mval)
		return string(b), err
	case isTree(mtype):
		return e.valueToTree(mtype, mval)
	case isOtherSequence(mtype), isCustomMarshalerSequence(mtype), isTextMarshalerSequence(mtype):
		return e.valueToOtherSlice(mtype, mval)
	case isTreeSequence(mtype):
		return e.valueToTreeSlice(mtype, mval)
	default:
		switch mtype.Kind() {
		case reflect.Bool:
			return mval.Bool(), nil
		case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
			if mtype.Kind() == reflect.Int64 && mtype == reflect.TypeOf(time.Duration(1)) {
				return fmt.Sprint(mval), nil
			}
			return mval.Int(), nil
		case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
			return mval.Uint(), nil
		case reflect.Float32, reflect.Float64:
			return mval.Float(), nil
		case reflect.String:
			return mval.String(), nil
		case reflect.Struct:
			return mval.Interface(), nil
		default:
			return nil, fmt.Errorf("Marshal can't handle %v(%v)", mtype, mtype.Kind())
		}
	}
}
func (e *Encoder) appendTree(t, o *Tree) error {
	for key, value := range o.values {
		if _, ok := t.values[key]; ok {
			continue
		}
		if tomlValue, ok := value.(*tomlValue); ok {
			tomlValue.position.Col = t.position.Col
		}
		t.values[key] = value
	}
	return nil
}
func (e *Encoder) wrapTomlValue(val interface{}, parent *Tree) interface{} {
	_, isTree := val.(*Tree)
	_, isTreeS := val.([]*Tree)
	if isTree || isTreeS {
		e.line++
		return val
	}
	ret := &tomlValue{
		value: val,
		position: Position{
			e.line,
			parent.position.Col,
		},
	}
	e.line++
	return ret
}
func (t *Tree) Unmarshal(v interface{}) error {
	d := Decoder{tval: t, tagName: tagFieldName}
	return d.unmarshal(v)
}
func (t *Tree) Marshal() ([]byte, error) {
	var buf bytes.Buffer
	_, err := t.WriteTo(&buf)
	if err != nil {
		return nil, err
	}
	return buf.Bytes(), nil
}
func Unmarshal(data []byte, v interface{}) error {
	t, err := LoadReader(bytes.NewReader(data))
	if err != nil {
		return err
	}
	return t.Unmarshal(v)
}
type Decoder struct {
	r    io.Reader
	tval *Tree
	encOpts
	tagName string
	strict  bool
	visitor visitorState
}
func NewDecoder(r io.Reader) *Decoder {
	return &Decoder{
		r:       r,
		encOpts: encOptsDefaults,
		tagName: tagFieldName,
	}
}
func (d *Decoder) Decode(v interface{}) error {
	var err error
	d.tval, err = LoadReader(d.r)
	if err != nil {
		return err
	}
	return d.unmarshal(v)
}
func (d *Decoder) SetTagName(v string) *Decoder {
	d.tagName = v
	return d
}
func (d *Decoder) Strict(strict bool) *Decoder {
	d.strict = strict
	return d
}
func (d *Decoder) unmarshal(v interface{}) error {
	mtype := reflect.TypeOf(v)
	if mtype == nil {
		return errors.New("nil cannot be unmarshaled from TOML")
	}
	if mtype.Kind() != reflect.Ptr {
		return errors.New("only a pointer to struct or map can be unmarshaled from TOML")
	}
	elem := mtype.Elem()
	switch elem.Kind() {
	case reflect.Struct, reflect.Map:
	case reflect.Interface:
		elem = mapStringInterfaceType
	default:
		return errors.New("only a pointer to struct or map can be unmarshaled from TOML")
	}
	if reflect.ValueOf(v).IsNil() {
		return errors.New("nil pointer cannot be unmarshaled from TOML")
	}
	vv := reflect.ValueOf(v).Elem()
	if d.strict {
		d.visitor = newVisitorState(d.tval)
	}
	sval, err := d.valueFromTree(elem, d.tval, &vv)
	if err != nil {
		return err
	}
	if err := d.visitor.validate(); err != nil {
		return err
	}
	reflect.ValueOf(v).Elem().Set(sval)
	return nil
}
func (d *Decoder) valueFromTree(mtype reflect.Type, tval *Tree, mval1 *reflect.Value) (reflect.Value, error) {
	if mtype.Kind() == reflect.Ptr {
		return d.unwrapPointer(mtype, tval, mval1)
	}
	if mvalPtr := reflect.New(mtype); isCustomUnmarshaler(mvalPtr.Type()) {
		d.visitor.visitAll()
		if tval == nil {
			return mvalPtr.Elem(), nil
		}
		if err := callCustomUnmarshaler(mvalPtr, tval.ToMap()); err != nil {
			return reflect.ValueOf(nil), fmt.Errorf("unmarshal toml: %v", err)
		}
		return mvalPtr.Elem(), nil
	}
	var mval reflect.Value
	switch mtype.Kind() {
	case reflect.Struct:
		if mval1 != nil {
			mval = *mval1
		} else {
			mval = reflect.New(mtype).Elem()
		}
		switch mval.Interface().(type) {
		case Tree:
			mval.Set(reflect.ValueOf(tval).Elem())
		default:
			for i := 0; i < mtype.NumField(); i++ {
				mtypef := mtype.Field(i)
				an := annotation{tag: d.tagName}
				opts := tomlOptions(mtypef, an)
				if !opts.include {
					continue
				}
				baseKey := opts.name
				keysToTry := []string{
					baseKey,
					strings.ToLower(baseKey),
					strings.ToTitle(baseKey),
					strings.ToLower(string(baseKey[0])) + baseKey[1:],
				}
				found := false
				if tval != nil {
					for _, key := range keysToTry {
						exists := tval.HasPath([]string{key})
						if !exists {
							continue
						}
						d.visitor.push(key)
						val := tval.GetPath([]string{key})
						fval := mval.Field(i)
						mvalf, err := d.valueFromToml(mtypef.Type, val, &fval)
						if err != nil {
							return mval, formatError(err, tval.GetPositionPath([]string{key}))
						}
						mval.Field(i).Set(mvalf)
						found = true
						d.visitor.pop()
						break
					}
				}
				if !found && opts.defaultValue != "" {
					mvalf := mval.Field(i)
					var val interface{}
					var err error
					switch mvalf.Kind() {
					case reflect.String:
						val = opts.defaultValue
					case reflect.Bool:
						val, err = strconv.ParseBool(opts.defaultValue)
					case reflect.Uint:
						val, err = strconv.ParseUint(opts.defaultValue, 10, 0)
					case reflect.Uint8:
						val, err = strconv.ParseUint(opts.defaultValue, 10, 8)
					case reflect.Uint16:
						val, err = strconv.ParseUint(opts.defaultValue, 10, 16)
					case reflect.Uint32:
						val, err = strconv.ParseUint(opts.defaultValue, 10, 32)
					case reflect.Uint64:
						val, err = strconv.ParseUint(opts.defaultValue, 10, 64)
					case reflect.Int:
						val, err = strconv.ParseInt(opts.defaultValue, 10, 0)
					case reflect.Int8:
						val, err = strconv.ParseInt(opts.defaultValue, 10, 8)
					case reflect.Int16:
						val, err = strconv.ParseInt(opts.defaultValue, 10, 16)
					case reflect.Int32:
						val, err = strconv.ParseInt(opts.defaultValue, 10, 32)
					case reflect.Int64:
						var hasExtension bool
						if len(opts.defaultValue) > 0 {
							lastChar := opts.defaultValue[len(opts.defaultValue)-1]
							if lastChar < '0' || lastChar > '9' {
								hasExtension = true
							}
						}
						if hasExtension && mvalf.Type().String() == "time.Duration" {
							val, err = time.ParseDuration(opts.defaultValue)
						} else {
							val, err = strconv.ParseInt(opts.defaultValue, 10, 64)
						}
					case reflect.Float32:
						val, err = strconv.ParseFloat(opts.defaultValue, 32)
					case reflect.Float64:
						val, err = strconv.ParseFloat(opts.defaultValue, 64)
					default:
						return mvalf, fmt.Errorf("unsupported field type for default option")
					}
					if err != nil {
						return mvalf, err
					}
					mvalf.Set(reflect.ValueOf(val).Convert(mvalf.Type()))
				}
				if !found && opts.defaultValue == "" && mtypef.Type.Kind() == reflect.Struct {
					tmpTval := tval
					if !mtypef.Anonymous {
						tmpTval = nil
					}
					fval := mval.Field(i)
					v, err := d.valueFromTree(mtypef.Type, tmpTval, &fval)
					if err != nil {
						return v, err
					}
					mval.Field(i).Set(v)
				}
			}
		}
	case reflect.Map:
		mval = reflect.MakeMap(mtype)
		for _, key := range tval.Keys() {
			d.visitor.push(key)
			val := tval.GetPath([]string{key})
			mvalf, err := d.valueFromToml(mtype.Elem(), val, nil)
			if err != nil {
				return mval, formatError(err, tval.GetPositionPath([]string{key}))
			}
			mval.SetMapIndex(reflect.ValueOf(key).Convert(mtype.Key()), mvalf)
			d.visitor.pop()
		}
	}
	return mval, nil
}
func (d *Decoder) valueFromTreeSlice(mtype reflect.Type, tval []*Tree) (reflect.Value, error) {
	mval, err := makeSliceOrArray(mtype, len(tval))
	if err != nil {
		return mval, err
	}
	for i := 0; i < len(tval); i++ {
		d.visitor.push(strconv.Itoa(i))
		val, err := d.valueFromTree(mtype.Elem(), tval[i], nil)
		if err != nil {
			return mval, err
		}
		mval.Index(i).Set(val)
		d.visitor.pop()
	}
	return mval, nil
}
func (d *Decoder) valueFromOtherSlice(mtype reflect.Type, tval []interface{}) (reflect.Value, error) {
	mval, err := makeSliceOrArray(mtype, len(tval))
	if err != nil {
		return mval, err
	}
	for i := 0; i < len(tval); i++ {
		val, err := d.valueFromToml(mtype.Elem(), tval[i], nil)
		if err != nil {
			return mval, err
		}
		mval.Index(i).Set(val)
	}
	return mval, nil
}
func (d *Decoder) valueFromOtherSliceI(mtype reflect.Type, tval interface{}) (reflect.Value, error) {
	val := reflect.ValueOf(tval)
	length := val.Len()
	mval, err := makeSliceOrArray(mtype, length)
	if err != nil {
		return mval, err
	}
	for i := 0; i < length; i++ {
		val, err := d.valueFromToml(mtype.Elem(), val.Index(i).Interface(), nil)
		if err != nil {
			return mval, err
		}
		mval.Index(i).Set(val)
	}
	return mval, nil
}
func makeSliceOrArray(mtype reflect.Type, tLength int) (reflect.Value, error) {
	var mval reflect.Value
	switch mtype.Kind() {
	case reflect.Slice:
		mval = reflect.MakeSlice(mtype, tLength, tLength)
	case reflect.Array:
		mval = reflect.New(reflect.ArrayOf(mtype.Len(), mtype.Elem())).Elem()
		if tLength > mtype.Len() {
			return mval, fmt.Errorf("unmarshal: TOML array length (%v) exceeds destination array length (%v)", tLength, mtype.Len())
		}
	}
	return mval, nil
}