Refactor compiler for encoder

- Introduced a two phase compilation to calculate Opcode index accurately
- Fix display number of Opcode
- Improve memory footprint for Opcode

internal/encoder/code.go

@@ -0,0 +1,877 @@
+package encoder
+
+import (
+	"fmt"
+	"unsafe"
+
+	"github.com/goccy/go-json/internal/runtime"
+)
+
+type Code interface {
+	Kind() CodeKind
+	ToOpcode(*compileContext) Opcodes
+}
+
+type AnonymousCode interface {
+	ToAnonymousOpcode(*compileContext) Opcodes
+}
+
+type Opcodes []*Opcode
+
+func (o Opcodes) First() *Opcode {
+	if len(o) == 0 {
+		return nil
+	}
+	return o[0]
+}
+
+func (o Opcodes) Last() *Opcode {
+	if len(o) == 0 {
+		return nil
+	}
+	return o[len(o)-1]
+}
+
+func (o Opcodes) Add(codes ...*Opcode) Opcodes {
+	return append(o, codes...)
+}
+
+type CodeKind int
+
+const (
+	CodeKindInterface CodeKind = iota
+	CodeKindPtr
+	CodeKindInt
+	CodeKindUint
+	CodeKindFloat
+	CodeKindString
+	CodeKindBool
+	CodeKindStruct
+	CodeKindMap
+	CodeKindSlice
+	CodeKindArray
+	CodeKindBytes
+	CodeKindMarshalJSON
+	CodeKindMarshalText
+	CodeKindRecursive
+)
+
+type IntCode struct {
+	typ      *runtime.Type
+	bitSize  uint8
+	isString bool
+	isPtr    bool
+}
+
+func (c *IntCode) Kind() CodeKind {
+	return CodeKindInt
+}
+
+func (c *IntCode) ToOpcode(ctx *compileContext) Opcodes {
+	var code *Opcode
+	switch {
+	case c.isPtr:
+		code = newOpCode(ctx, c.typ, OpIntPtr)
+	case c.isString:
+		code = newOpCode(ctx, c.typ, OpIntString)
+	default:
+		code = newOpCode(ctx, c.typ, OpInt)
+	}
+	code.NumBitSize = c.bitSize
+	ctx.incIndex()
+	return Opcodes{code}
+}
+
+type UintCode struct {
+	typ      *runtime.Type
+	bitSize  uint8
+	isString bool
+	isPtr    bool
+}
+
+func (c *UintCode) Kind() CodeKind {
+	return CodeKindUint
+}
+
+func (c *UintCode) ToOpcode(ctx *compileContext) Opcodes {
+	var code *Opcode
+	switch {
+	case c.isPtr:
+		code = newOpCode(ctx, c.typ, OpUintPtr)
+	case c.isString:
+		code = newOpCode(ctx, c.typ, OpUintString)
+	default:
+		code = newOpCode(ctx, c.typ, OpUint)
+	}
+	code.NumBitSize = c.bitSize
+	ctx.incIndex()
+	return Opcodes{code}
+}
+
+type FloatCode struct {
+	typ      *runtime.Type
+	bitSize  uint8
+	isString bool
+	isPtr    bool
+}
+
+func (c *FloatCode) Kind() CodeKind {
+	return CodeKindFloat
+}
+
+func (c *FloatCode) ToOpcode(ctx *compileContext) Opcodes {
+	var code *Opcode
+	switch {
+	case c.isPtr:
+		switch c.bitSize {
+		case 32:
+			code = newOpCode(ctx, c.typ, OpFloat32Ptr)
+		default:
+			code = newOpCode(ctx, c.typ, OpFloat64Ptr)
+		}
+	default:
+		switch c.bitSize {
+		case 32:
+			code = newOpCode(ctx, c.typ, OpFloat32)
+		default:
+			code = newOpCode(ctx, c.typ, OpFloat64)
+		}
+	}
+	ctx.incIndex()
+	return Opcodes{code}
+}
+
+type StringCode struct {
+	typ      *runtime.Type
+	isString bool
+	isPtr    bool
+}
+
+func (c *StringCode) Kind() CodeKind {
+	return CodeKindString
+}
+
+func (c *StringCode) ToOpcode(ctx *compileContext) Opcodes {
+	isJsonNumberType := c.typ == runtime.Type2RType(jsonNumberType)
+	var code *Opcode
+	if c.isPtr {
+		if isJsonNumberType {
+			code = newOpCode(ctx, c.typ, OpNumberPtr)
+		} else {
+			code = newOpCode(ctx, c.typ, OpStringPtr)
+		}
+	} else {
+		if isJsonNumberType {
+			code = newOpCode(ctx, c.typ, OpNumber)
+		} else {
+			code = newOpCode(ctx, c.typ, OpString)
+		}
+	}
+	ctx.incIndex()
+	return Opcodes{code}
+}
+
+type BoolCode struct {
+	typ      *runtime.Type
+	isString bool
+	isPtr    bool
+}
+
+func (c *BoolCode) Kind() CodeKind {
+	return CodeKindBool
+}
+
+func (c *BoolCode) ToOpcode(ctx *compileContext) Opcodes {
+	var code *Opcode
+	switch {
+	case c.isPtr:
+		code = newOpCode(ctx, c.typ, OpBoolPtr)
+	default:
+		code = newOpCode(ctx, c.typ, OpBool)
+	}
+	ctx.incIndex()
+	return Opcodes{code}
+}
+
+type BytesCode struct {
+	typ   *runtime.Type
+	isPtr bool
+}
+
+func (c *BytesCode) Kind() CodeKind {
+	return CodeKindBytes
+}
+
+func (c *BytesCode) ToOpcode(ctx *compileContext) Opcodes {
+	var code *Opcode
+	switch {
+	case c.isPtr:
+		code = newOpCode(ctx, c.typ, OpBytesPtr)
+	default:
+		code = newOpCode(ctx, c.typ, OpBytes)
+	}
+	ctx.incIndex()
+	return Opcodes{code}
+}
+
+type SliceCode struct {
+	typ   *runtime.Type
+	value Code
+}
+
+func (c *SliceCode) Kind() CodeKind {
+	return CodeKindSlice
+}
+
+func (c *SliceCode) ToOpcode(ctx *compileContext) Opcodes {
+	// header => opcode => elem => end
+	//             ^        |
+	//             |________|
+	size := c.typ.Elem().Size()
+	header := newSliceHeaderCode(ctx, c.typ)
+	ctx.incIndex()
+
+	ctx.incIndent()
+	codes := c.value.ToOpcode(ctx)
+	ctx.decIndent()
+
+	codes.First().Flags |= IndirectFlags
+	elemCode := newSliceElemCode(ctx, c.typ.Elem(), header, size)
+	ctx.incIndex()
+	end := newOpCode(ctx, c.typ, OpSliceEnd)
+	ctx.incIndex()
+	header.End = end
+	header.Next = codes.First()
+	codes.Last().Next = elemCode
+	elemCode.Next = codes.First()
+	elemCode.End = end
+	return Opcodes{header}.Add(codes...).Add(elemCode).Add(end)
+}
+
+type ArrayCode struct {
+	typ   *runtime.Type
+	value Code
+}
+
+func (c *ArrayCode) Kind() CodeKind {
+	return CodeKindArray
+}
+
+func (c *ArrayCode) ToOpcode(ctx *compileContext) Opcodes {
+	// header => opcode => elem => end
+	//             ^        |
+	//             |________|
+	elem := c.typ.Elem()
+	alen := c.typ.Len()
+	size := elem.Size()
+
+	header := newArrayHeaderCode(ctx, c.typ, alen)
+	ctx.incIndex()
+
+	ctx.incIndent()
+	codes := c.value.ToOpcode(ctx)
+	ctx.decIndent()
+
+	codes.First().Flags |= IndirectFlags
+
+	elemCode := newArrayElemCode(ctx, elem, header, alen, size)
+	ctx.incIndex()
+
+	end := newOpCode(ctx, c.typ, OpArrayEnd)
+	ctx.incIndex()
+
+	header.End = end
+	header.Next = codes.First()
+	codes.Last().Next = elemCode
+	elemCode.Next = codes.First()
+	elemCode.End = end
+
+	return Opcodes{header}.Add(codes...).Add(elemCode).Add(end)
+}
+
+type MapCode struct {
+	typ   *runtime.Type
+	key   Code
+	value Code
+}
+
+func (c *MapCode) Kind() CodeKind {
+	return CodeKindMap
+}
+
+func (c *MapCode) ToOpcode(ctx *compileContext) Opcodes {
+	// header => code => value => code => key => code => value => code => end
+	//                                     ^                       |
+	//                                     |_______________________|
+	header := newMapHeaderCode(ctx, c.typ)
+	ctx.incIndex()
+
+	keyCodes := c.key.ToOpcode(ctx)
+
+	value := newMapValueCode(ctx, c.typ.Elem(), header)
+	ctx.incIndex()
+
+	ctx.incIndent()
+	valueCodes := c.value.ToOpcode(ctx)
+	ctx.decIndent()
+
+	valueCodes.First().Flags |= IndirectFlags
+
+	key := newMapKeyCode(ctx, c.typ.Key(), header)
+	ctx.incIndex()
+
+	end := newMapEndCode(ctx, c.typ, header)
+	ctx.incIndex()
+
+	header.Next = keyCodes.First()
+	keyCodes.Last().Next = value
+	value.Next = valueCodes.First()
+	valueCodes.Last().Next = key
+	key.Next = keyCodes.First()
+
+	header.End = end
+	key.End = end
+	value.End = end
+	return Opcodes{header}.Add(keyCodes...).Add(value).Add(valueCodes...).Add(key).Add(end)
+}
+
+type StructCode struct {
+	typ                       *runtime.Type
+	isPtr                     bool
+	fields                    []*StructFieldCode
+	disableIndirectConversion bool
+	isIndirect                bool
+	isRecursive               bool
+	recursiveCodes            Opcodes
+}
+
+func (c *StructCode) Kind() CodeKind {
+	return CodeKindStruct
+}
+
+func (c *StructCode) lastFieldCode(field *StructFieldCode, firstField *Opcode) *Opcode {
+	if field.isAnonymous {
+		return c.lastAnonymousFieldCode(firstField)
+	}
+	lastField := firstField
+	for lastField.NextField != nil {
+		lastField = lastField.NextField
+	}
+	return lastField
+}
+
+func (c *StructCode) lastAnonymousFieldCode(firstField *Opcode) *Opcode {
+	// firstField is special StructHead operation for anonymous structure.
+	// So, StructHead's next operation is truely struct head operation.
+	lastField := firstField.Next
+	for lastField.NextField != nil {
+		lastField = lastField.NextField
+	}
+	return lastField
+}
+
+func (c *StructCode) ToOpcode(ctx *compileContext) Opcodes {
+	// header => code => structField => code => end
+	//                        ^          |
+	//                        |__________|
+	if c.isRecursive {
+		recursive := newRecursiveCode(ctx, c.typ, &CompiledCode{})
+		recursive.Type = c.typ
+		ctx.incIndex()
+		*ctx.recursiveCodes = append(*ctx.recursiveCodes, recursive)
+		return Opcodes{recursive}
+	}
+	codes := Opcodes{}
+	var prevField *Opcode
+	ctx.incIndent()
+	for idx, field := range c.fields {
+		isFirstField := idx == 0
+		isEndField := idx == len(c.fields)-1
+		fieldCodes := field.ToOpcode(ctx, isFirstField, isEndField)
+		for _, code := range fieldCodes {
+			if c.isIndirect {
+				code.Flags |= IndirectFlags
+			}
+		}
+		firstField := fieldCodes.First()
+		if len(codes) > 0 {
+			codes.Last().Next = firstField
+			firstField.Idx = codes.First().Idx
+		}
+		if prevField != nil {
+			prevField.NextField = firstField
+		}
+		if isEndField {
+			endField := fieldCodes.Last()
+			if len(codes) > 0 {
+				codes.First().End = endField
+			} else if field.isAnonymous {
+				firstField.End = endField
+				lastField := c.lastAnonymousFieldCode(firstField)
+				lastField.NextField = endField
+			} else {
+				firstField.End = endField
+			}
+			codes = codes.Add(fieldCodes...)
+			break
+		}
+		prevField = c.lastFieldCode(field, firstField)
+		codes = codes.Add(fieldCodes...)
+	}
+	if len(codes) == 0 {
+		head := &Opcode{
+			Op:         OpStructHead,
+			Idx:        opcodeOffset(ctx.ptrIndex),
+			Type:       c.typ,
+			DisplayIdx: ctx.opcodeIndex,
+			Indent:     ctx.indent,
+		}
+		ctx.incOpcodeIndex()
+		end := &Opcode{
+			Op:         OpStructEnd,
+			Idx:        opcodeOffset(ctx.ptrIndex),
+			DisplayIdx: ctx.opcodeIndex,
+			Indent:     ctx.indent,
+		}
+		head.NextField = end
+		head.Next = end
+		head.End = end
+		codes = codes.Add(head, end)
+		ctx.incIndex()
+	}
+	ctx.decIndent()
+	ctx.structTypeToCodes[uintptr(unsafe.Pointer(c.typ))] = codes
+	return codes
+}
+
+func (c *StructCode) ToAnonymousOpcode(ctx *compileContext) Opcodes {
+	// header => code => structField => code => end
+	//                        ^          |
+	//                        |__________|
+	if c.isRecursive {
+		recursive := newRecursiveCode(ctx, c.typ, &CompiledCode{})
+		recursive.Type = c.typ
+		ctx.incIndex()
+		*ctx.recursiveCodes = append(*ctx.recursiveCodes, recursive)
+		return Opcodes{recursive}
+	}
+	codes := Opcodes{}
+	var prevField *Opcode
+	for idx, field := range c.fields {
+		isFirstField := idx == 0
+		isEndField := idx == len(c.fields)-1
+		fieldCodes := field.ToAnonymousOpcode(ctx, isFirstField, isEndField)
+		for _, code := range fieldCodes {
+			if c.isIndirect {
+				code.Flags |= IndirectFlags
+			}
+		}
+		firstField := fieldCodes.First()
+		if len(codes) > 0 {
+			codes.Last().Next = firstField
+			firstField.Idx = codes.First().Idx
+		}
+		if prevField != nil {
+			prevField.NextField = firstField
+		}
+		if isEndField {
+			lastField := fieldCodes.Last()
+			if len(codes) > 0 {
+				codes.First().End = lastField
+			} else {
+				firstField.End = lastField
+			}
+		}
+		prevField = firstField
+		codes = codes.Add(fieldCodes...)
+	}
+	return codes
+}
+
+func (c *StructCode) removeFieldsByTags(tags runtime.StructTags) {
+	fields := make([]*StructFieldCode, 0, len(c.fields))
+	for _, field := range c.fields {
+		if field.isAnonymous {
+			structCode := field.getAnonymousStruct()
+			if structCode != nil && !structCode.isRecursive {
+				structCode.removeFieldsByTags(tags)
+				if len(structCode.fields) > 0 {
+					fields = append(fields, field)
+				}
+				continue
+			}
+		}
+		if tags.ExistsKey(field.key) {
+			continue
+		}
+		fields = append(fields, field)
+	}
+	c.fields = fields
+}
+
+func (c *StructCode) enableIndirect() {
+	if c.isIndirect {
+		return
+	}
+	c.isIndirect = true
+	if len(c.fields) == 0 {
+		return
+	}
+	structCode := c.fields[0].getStruct()
+	if structCode == nil {
+		return
+	}
+	structCode.enableIndirect()
+}
+
+type StructFieldCode struct {
+	typ                *runtime.Type
+	key                string
+	tag                *runtime.StructTag
+	value              Code
+	offset             uintptr
+	isAnonymous        bool
+	isTaggedKey        bool
+	isNilableType      bool
+	isNilCheck         bool
+	isAddrForMarshaler bool
+	isNextOpPtrType    bool
+}
+
+func (c *StructFieldCode) getStruct() *StructCode {
+	value := c.value
+	ptr, ok := value.(*PtrCode)
+	if ok {
+		value = ptr.value
+	}
+	structCode, ok := value.(*StructCode)
+	if ok {
+		return structCode
+	}
+	return nil
+}
+
+func (c *StructFieldCode) getAnonymousStruct() *StructCode {
+	if !c.isAnonymous {
+		return nil
+	}
+	return c.getStruct()
+}
+
+func optimizeStructHeader(code *Opcode, tag *runtime.StructTag) OpType {
+	headType := code.ToHeaderType(tag.IsString)
+	if tag.IsOmitEmpty {
+		headType = headType.HeadToOmitEmptyHead()
+	}
+	return headType
+}
+
+func optimizeStructField(code *Opcode, tag *runtime.StructTag) OpType {
+	fieldType := code.ToFieldType(tag.IsString)
+	if tag.IsOmitEmpty {
+		fieldType = fieldType.FieldToOmitEmptyField()
+	}
+	return fieldType
+}
+
+func (c *StructFieldCode) headerOpcodes(ctx *compileContext, field *Opcode, valueCodes Opcodes) Opcodes {
+	value := valueCodes.First()
+	op := optimizeStructHeader(value, c.tag)
+	field.Op = op
+	field.NumBitSize = value.NumBitSize
+	field.PtrNum = value.PtrNum
+	fieldCodes := Opcodes{field}
+	if op.IsMultipleOpHead() {
+		field.Next = value
+		fieldCodes = fieldCodes.Add(valueCodes...)
+	} else {
+		ctx.decIndex()
+	}
+	return fieldCodes
+}
+
+func (c *StructFieldCode) fieldOpcodes(ctx *compileContext, field *Opcode, valueCodes Opcodes) Opcodes {
+	value := valueCodes.First()
+	op := optimizeStructField(value, c.tag)
+	field.Op = op
+	field.NumBitSize = value.NumBitSize
+	field.PtrNum = value.PtrNum
+
+	fieldCodes := Opcodes{field}
+	if op.IsMultipleOpField() {
+		field.Next = value
+		fieldCodes = fieldCodes.Add(valueCodes...)
+	} else {
+		ctx.decIndex()
+	}
+	return fieldCodes
+}
+
+func (c *StructFieldCode) addStructEndCode(ctx *compileContext, codes Opcodes) Opcodes {
+	end := &Opcode{
+		Op:         OpStructEnd,
+		Idx:        opcodeOffset(ctx.ptrIndex),
+		DisplayIdx: ctx.opcodeIndex,
+		Indent:     ctx.indent,
+	}
+	codes.Last().Next = end
+	codes.First().NextField = end
+	codes = codes.Add(end)
+	ctx.incOpcodeIndex()
+	return codes
+}
+
+func (c *StructFieldCode) structKey(ctx *compileContext) string {
+	if ctx.escapeKey {
+		rctx := &RuntimeContext{Option: &Option{Flag: HTMLEscapeOption}}
+		return fmt.Sprintf(`%s:`, string(AppendString(rctx, []byte{}, c.key)))
+	}
+	return fmt.Sprintf(`"%s":`, c.key)
+}
+
+func (c *StructFieldCode) flags() OpFlags {
+	var flags OpFlags
+	if c.isTaggedKey {
+		flags |= IsTaggedKeyFlags
+	}
+	if c.isNilableType {
+		flags |= IsNilableTypeFlags
+	}
+	if c.isNilCheck {
+		flags |= NilCheckFlags
+	}
+	if c.isAddrForMarshaler {
+		flags |= AddrForMarshalerFlags
+	}
+	if c.isNextOpPtrType {
+		flags |= IsNextOpPtrTypeFlags
+	}
+	if c.isAnonymous {
+		flags |= AnonymousKeyFlags
+	}
+	return flags
+}
+
+func (c *StructFieldCode) toValueOpcodes(ctx *compileContext) Opcodes {
+	if c.isAnonymous {
+		anonymCode, ok := c.value.(AnonymousCode)
+		if ok {
+			return anonymCode.ToAnonymousOpcode(ctx)
+		}
+	}
+	return c.value.ToOpcode(ctx)
+}
+
+func (c *StructFieldCode) ToOpcode(ctx *compileContext, isFirstField, isEndField bool) Opcodes {
+	field := &Opcode{
+		Idx:        opcodeOffset(ctx.ptrIndex),
+		Flags:      c.flags(),
+		Key:        c.structKey(ctx),
+		Offset:     uint32(c.offset),
+		Type:       c.typ,
+		DisplayIdx: ctx.opcodeIndex,
+		Indent:     ctx.indent,
+		DisplayKey: c.key,
+	}
+	ctx.incIndex()
+	valueCodes := c.toValueOpcodes(ctx)
+	if isFirstField {
+		codes := c.headerOpcodes(ctx, field, valueCodes)
+		if isEndField {
+			codes = c.addStructEndCode(ctx, codes)
+		}
+		return codes
+	}
+	codes := c.fieldOpcodes(ctx, field, valueCodes)
+	if isEndField {
+		if isEnableStructEndOptimizationType(c.value.Kind()) {
+			field.Op = field.Op.FieldToEnd()
+		} else {
+			codes = c.addStructEndCode(ctx, codes)
+		}
+	}
+	return codes
+}
+
+func (c *StructFieldCode) ToAnonymousOpcode(ctx *compileContext, isFirstField, isEndField bool) Opcodes {
+	field := &Opcode{
+		Idx:        opcodeOffset(ctx.ptrIndex),
+		Flags:      c.flags() | AnonymousHeadFlags,
+		Key:        c.structKey(ctx),
+		Offset:     uint32(c.offset),
+		Type:       c.typ,
+		DisplayIdx: ctx.opcodeIndex,
+		Indent:     ctx.indent,
+		DisplayKey: c.key,
+	}
+	ctx.incIndex()
+	valueCodes := c.toValueOpcodes(ctx)
+	if isFirstField {
+		return c.headerOpcodes(ctx, field, valueCodes)
+	}
+	return c.fieldOpcodes(ctx, field, valueCodes)
+}
+
+func isEnableStructEndOptimizationType(typ CodeKind) bool {
+	switch typ {
+	case CodeKindInt,
+		CodeKindUint,
+		CodeKindFloat,
+		CodeKindString,
+		CodeKindBool,
+		CodeKindBytes:
+		return true
+	default:
+		return false
+	}
+}
+
+type InterfaceCode struct {
+	typ   *runtime.Type
+	isPtr bool
+}
+
+func (c *InterfaceCode) Kind() CodeKind {
+	return CodeKindInterface
+}
+
+func (c *InterfaceCode) ToOpcode(ctx *compileContext) Opcodes {
+	var code *Opcode
+	switch {
+	case c.isPtr:
+		code = newOpCode(ctx, c.typ, OpInterfacePtr)
+	default:
+		code = newOpCode(ctx, c.typ, OpInterface)
+	}
+	if c.typ.NumMethod() > 0 {
+		code.Flags |= NonEmptyInterfaceFlags
+	}
+	ctx.incIndex()
+	return Opcodes{code}
+}
+
+type MarshalJSONCode struct {
+	typ                *runtime.Type
+	isAddrForMarshaler bool
+	isNilableType      bool
+	isMarshalerContext bool
+}
+
+func (c *MarshalJSONCode) Kind() CodeKind {
+	return CodeKindMarshalJSON
+}
+
+func (c *MarshalJSONCode) ToOpcode(ctx *compileContext) Opcodes {
+	code := newOpCode(ctx, c.typ, OpMarshalJSON)
+	if c.isAddrForMarshaler {
+		code.Flags |= AddrForMarshalerFlags
+	}
+	if c.isMarshalerContext {
+		code.Flags |= MarshalerContextFlags
+	}
+	if c.isNilableType {
+		code.Flags |= IsNilableTypeFlags
+	} else {
+		code.Flags &= ^IsNilableTypeFlags
+	}
+	ctx.incIndex()
+	return Opcodes{code}
+}
+
+type MarshalTextCode struct {
+	typ                *runtime.Type
+	isAddrForMarshaler bool
+	isNilableType      bool
+}
+
+func (c *MarshalTextCode) Kind() CodeKind {
+	return CodeKindMarshalText
+}
+
+func (c *MarshalTextCode) ToOpcode(ctx *compileContext) Opcodes {
+	code := newOpCode(ctx, c.typ, OpMarshalText)
+	if c.isAddrForMarshaler {
+		code.Flags |= AddrForMarshalerFlags
+	}
+	if c.isNilableType {
+		code.Flags |= IsNilableTypeFlags
+	} else {
+		code.Flags &= ^IsNilableTypeFlags
+	}
+	ctx.incIndex()
+	return Opcodes{code}
+}
+
+type PtrCode struct {
+	typ    *runtime.Type
+	value  Code
+	ptrNum uint8
+}
+
+func (c *PtrCode) Kind() CodeKind {
+	return CodeKindPtr
+}
+
+func (c *PtrCode) ToOpcode(ctx *compileContext) Opcodes {
+	codes := c.value.ToOpcode(ctx)
+	codes.First().Op = convertPtrOp(codes.First())
+	codes.First().PtrNum = c.ptrNum
+	return codes
+}
+
+func (c *PtrCode) ToAnonymousOpcode(ctx *compileContext) Opcodes {
+	var codes Opcodes
+	anonymCode, ok := c.value.(AnonymousCode)
+	if ok {
+		codes = anonymCode.ToAnonymousOpcode(ctx)
+	} else {
+		codes = c.value.ToOpcode(ctx)
+	}
+	codes.First().Op = convertPtrOp(codes.First())
+	codes.First().PtrNum = c.ptrNum
+	return codes
+}
+
+func convertPtrOp(code *Opcode) OpType {
+	ptrHeadOp := code.Op.HeadToPtrHead()
+	if code.Op != ptrHeadOp {
+		if code.PtrNum > 0 {
+			// ptr field and ptr head
+			code.PtrNum--
+		}
+		return ptrHeadOp
+	}
+	switch code.Op {
+	case OpInt:
+		return OpIntPtr
+	case OpUint:
+		return OpUintPtr
+	case OpFloat32:
+		return OpFloat32Ptr
+	case OpFloat64:
+		return OpFloat64Ptr
+	case OpString:
+		return OpStringPtr
+	case OpBool:
+		return OpBoolPtr
+	case OpBytes:
+		return OpBytesPtr
+	case OpNumber:
+		return OpNumberPtr
+	case OpArray:
+		return OpArrayPtr
+	case OpSlice:
+		return OpSlicePtr
+	case OpMap:
+		return OpMapPtr
+	case OpMarshalJSON:
+		return OpMarshalJSONPtr
+	case OpMarshalText:
+		return OpMarshalTextPtr
+	case OpInterface:
+		return OpInterfacePtr
+	case OpRecursive:
+		return OpRecursivePtr
+	}
+	return code.Op
+}

internal/encoder/compiler_norace.go

@@ -1,13 +1,8 @@
+//go:build !race
 // +build !race
 
 package encoder
 
-import (
-	"unsafe"
-
-	"github.com/goccy/go-json/internal/runtime"
-)
-
 func CompileToGetCodeSet(typeptr uintptr) (*OpcodeSet, error) {
 	if typeptr > typeAddr.MaxTypeAddr {
 		return compileToGetCodeSetSlowPath(typeptr)
@@ -16,41 +11,10 @@ func CompileToGetCodeSet(typeptr uintptr) (*OpcodeSet, error) {
 	if codeSet := cachedOpcodeSets[index]; codeSet != nil {
 		return codeSet, nil
 	}
-
+	codeSet, err := newCompiler().compile(typeptr)
-	// noescape trick for header.typ ( reflect.*rtype )
-	copiedType := *(**runtime.Type)(unsafe.Pointer(&typeptr))
-
-	noescapeKeyCode, err := compileHead(&compileContext{
-		typ:                      copiedType,
-		structTypeToCompiledCode: map[uintptr]*CompiledCode{},
-	})
 	if err != nil {
 		return nil, err
 	}
-	escapeKeyCode, err := compileHead(&compileContext{
-		typ:                      copiedType,
-		structTypeToCompiledCode: map[uintptr]*CompiledCode{},
-		escapeKey:                true,
-	})
-	if err != nil {
-		return nil, err
-	}
-	noescapeKeyCode = copyOpcode(noescapeKeyCode)
-	escapeKeyCode = copyOpcode(escapeKeyCode)
-	setTotalLengthToInterfaceOp(noescapeKeyCode)
-	setTotalLengthToInterfaceOp(escapeKeyCode)
-	interfaceNoescapeKeyCode := copyToInterfaceOpcode(noescapeKeyCode)
-	interfaceEscapeKeyCode := copyToInterfaceOpcode(escapeKeyCode)
-	codeLength := noescapeKeyCode.TotalLength()
-	codeSet := &OpcodeSet{
-		Type:                     copiedType,
-		NoescapeKeyCode:          noescapeKeyCode,
-		EscapeKeyCode:            escapeKeyCode,
-		InterfaceNoescapeKeyCode: interfaceNoescapeKeyCode,
-		InterfaceEscapeKeyCode:   interfaceEscapeKeyCode,
-		CodeLength:               codeLength,
-		EndCode:                  ToEndCode(interfaceNoescapeKeyCode),
-	}
 	cachedOpcodeSets[index] = codeSet
 	return codeSet, nil
 }

internal/encoder/compiler_race.go

@@ -1,12 +1,10 @@
+//go:build race
 // +build race
 
 package encoder
 
 import (
 	"sync"
-	"unsafe"
-
-	"github.com/goccy/go-json/internal/runtime"
 )
 
 var setsMu sync.RWMutex
@@ -23,41 +21,10 @@ func CompileToGetCodeSet(typeptr uintptr) (*OpcodeSet, error) {
 	}
 	setsMu.RUnlock()
 
-	// noescape trick for header.typ ( reflect.*rtype )
+	codeSet, err := newCompiler().compile(typeptr)
-	copiedType := *(**runtime.Type)(unsafe.Pointer(&typeptr))
-
-	noescapeKeyCode, err := compileHead(&compileContext{
-		typ:                      copiedType,
-		structTypeToCompiledCode: map[uintptr]*CompiledCode{},
-	})
 	if err != nil {
 		return nil, err
 	}
-	escapeKeyCode, err := compileHead(&compileContext{
-		typ:                      copiedType,
-		structTypeToCompiledCode: map[uintptr]*CompiledCode{},
-		escapeKey:                true,
-	})
-	if err != nil {
-		return nil, err
-	}
-
-	noescapeKeyCode = copyOpcode(noescapeKeyCode)
-	escapeKeyCode = copyOpcode(escapeKeyCode)
-	setTotalLengthToInterfaceOp(noescapeKeyCode)
-	setTotalLengthToInterfaceOp(escapeKeyCode)
-	interfaceNoescapeKeyCode := copyToInterfaceOpcode(noescapeKeyCode)
-	interfaceEscapeKeyCode := copyToInterfaceOpcode(escapeKeyCode)
-	codeLength := noescapeKeyCode.TotalLength()
-	codeSet := &OpcodeSet{
-		Type:                     copiedType,
-		NoescapeKeyCode:          noescapeKeyCode,
-		EscapeKeyCode:            escapeKeyCode,
-		InterfaceNoescapeKeyCode: interfaceNoescapeKeyCode,
-		InterfaceEscapeKeyCode:   interfaceEscapeKeyCode,
-		CodeLength:               codeLength,
-		EndCode:                  ToEndCode(interfaceNoescapeKeyCode),
-	}
 	setsMu.Lock()
 	cachedOpcodeSets[index] = codeSet
 	setsMu.Unlock()

internal/encoder/context.go

@@ -9,44 +9,20 @@ import (
 )
 
 type compileContext struct {
-	typ                      *runtime.Type
 	opcodeIndex       uint32
 	ptrIndex          int
 	indent            uint32
 	escapeKey         bool
-	structTypeToCompiledCode map[uintptr]*CompiledCode
+	structTypeToCodes map[uintptr]Opcodes
-
+	recursiveCodes    *Opcodes
-	parent *compileContext
 }
 
-func (c *compileContext) context() *compileContext {
+func (c *compileContext) incIndent() {
-	return &compileContext{
+	c.indent++
-		typ:                      c.typ,
-		opcodeIndex:              c.opcodeIndex,
-		ptrIndex:                 c.ptrIndex,
-		indent:                   c.indent,
-		escapeKey:                c.escapeKey,
-		structTypeToCompiledCode: c.structTypeToCompiledCode,
-		parent:                   c,
-	}
 }
 
-func (c *compileContext) withType(typ *runtime.Type) *compileContext {
+func (c *compileContext) decIndent() {
-	ctx := c.context()
+	c.indent--
-	ctx.typ = typ
-	return ctx
-}
-
-func (c *compileContext) incIndent() *compileContext {
-	ctx := c.context()
-	ctx.indent++
-	return ctx
-}
-
-func (c *compileContext) decIndent() *compileContext {
-	ctx := c.context()
-	ctx.indent--
-	return ctx
 }
 
 func (c *compileContext) incIndex() {
@@ -61,30 +37,18 @@ func (c *compileContext) decIndex() {
 
 func (c *compileContext) incOpcodeIndex() {
 	c.opcodeIndex++
-	if c.parent != nil {
-		c.parent.incOpcodeIndex()
-	}
 }
 
 func (c *compileContext) decOpcodeIndex() {
 	c.opcodeIndex--
-	if c.parent != nil {
-		c.parent.decOpcodeIndex()
-	}
 }
 
 func (c *compileContext) incPtrIndex() {
 	c.ptrIndex++
-	if c.parent != nil {
-		c.parent.incPtrIndex()
-	}
 }
 
 func (c *compileContext) decPtrIndex() {
 	c.ptrIndex--
-	if c.parent != nil {
-		c.parent.decPtrIndex()
-	}
 }
 
 const (

internal/encoder/opcode.go

@@ -38,7 +38,6 @@ type Opcode struct {
 	Flags      OpFlags
 
 	Type       *runtime.Type // go type
-	PrevField  *Opcode       // prev struct field
 	Jmp        *CompiledCode // for recursive call
 	ElemIdx    uint32        // offset to access array/slice/map elem
 	Length     uint32        // offset to access slice/map length or array length
@@ -50,18 +49,40 @@ type Opcode struct {
 	DisplayKey string        // key text to display
 }
 
-func (c *Opcode) IsStructHeadOp() bool {
+func (c *Opcode) Validate() error {
-	if c == nil {
+	var prevIdx uint32
-		return false
+	for code := c; !code.IsEnd(); {
+		if prevIdx != 0 {
+			if code.DisplayIdx != prevIdx+1 {
+				return fmt.Errorf(
+					"invalid index. previous display index is %d but next is %d. dump = %s",
+					prevIdx, code.DisplayIdx, c.Dump(),
+				)
 			}
-	return strings.Contains(c.Op.String(), "Head")
+		}
+		prevIdx = code.DisplayIdx
+		code = code.IterNext()
+	}
+	return nil
 }
 
-func (c *Opcode) IsRecursiveOp() bool {
+func (c *Opcode) IterNext() *Opcode {
 	if c == nil {
-		return false
+		return nil
 	}
-	return strings.Contains(c.Op.String(), "Recursive")
+	switch c.Op.CodeType() {
+	case CodeArrayElem, CodeSliceElem, CodeMapKey:
+		return c.End
+	default:
+		return c.Next
+	}
+}
+
+func (c *Opcode) IsEnd() bool {
+	if c == nil {
+		return true
+	}
+	return c.Op == OpEnd || c.Op == OpInterfaceEnd || c.Op == OpRecursiveEnd
 }
 
 func (c *Opcode) MaxIdx() uint32 {
@@ -287,82 +308,27 @@ func (c *Opcode) ToFieldType(isString bool) OpType {
 	return OpStructField
 }
 
-func newOpCode(ctx *compileContext, op OpType) *Opcode {
+func newOpCode(ctx *compileContext, typ *runtime.Type, op OpType) *Opcode {
-	return newOpCodeWithNext(ctx, op, newEndOp(ctx))
+	return newOpCodeWithNext(ctx, typ, op, newEndOp(ctx, typ))
 }
 
 func opcodeOffset(idx int) uint32 {
 	return uint32(idx) * uintptrSize
 }
 
+func getCodeAddrByIdx(head *Opcode, idx uint32) *Opcode {
+	addr := uintptr(unsafe.Pointer(head)) + uintptr(idx)*unsafe.Sizeof(Opcode{})
+	return *(**Opcode)(unsafe.Pointer(&addr))
+}
+
 func copyOpcode(code *Opcode) *Opcode {
-	codeMap := map[uintptr]*Opcode{}
+	codeNum := ToEndCode(code).DisplayIdx + 1
-	return code.copy(codeMap)
+	codeSlice := make([]Opcode, codeNum)
-}
+	head := (*Opcode)((*runtime.SliceHeader)(unsafe.Pointer(&codeSlice)).Data)
-
+	ptr := head
-func setTotalLengthToInterfaceOp(code *Opcode) {
 	c := code
-	for c.Op != OpEnd && c.Op != OpInterfaceEnd {
+	for {
-		if c.Op == OpInterface {
+		*ptr = Opcode{
-			c.Length = uint32(code.TotalLength())
-		}
-		switch c.Op.CodeType() {
-		case CodeArrayElem, CodeSliceElem, CodeMapKey:
-			c = c.End
-		default:
-			c = c.Next
-		}
-	}
-}
-
-func ToEndCode(code *Opcode) *Opcode {
-	c := code
-	for c.Op != OpEnd && c.Op != OpInterfaceEnd {
-		switch c.Op.CodeType() {
-		case CodeArrayElem, CodeSliceElem, CodeMapKey:
-			c = c.End
-		default:
-			c = c.Next
-		}
-	}
-	return c
-}
-
-func copyToInterfaceOpcode(code *Opcode) *Opcode {
-	copied := copyOpcode(code)
-	c := copied
-	c = ToEndCode(c)
-	c.Idx += uintptrSize
-	c.ElemIdx = c.Idx + uintptrSize
-	c.Length = c.Idx + 2*uintptrSize
-	c.Op = OpInterfaceEnd
-	return copied
-}
-
-func newOpCodeWithNext(ctx *compileContext, op OpType, next *Opcode) *Opcode {
-	return &Opcode{
-		Op:         op,
-		Idx:        opcodeOffset(ctx.ptrIndex),
-		Next:       next,
-		Type:       ctx.typ,
-		DisplayIdx: ctx.opcodeIndex,
-		Indent:     ctx.indent,
-	}
-}
-
-func newEndOp(ctx *compileContext) *Opcode {
-	return newOpCodeWithNext(ctx, OpEnd, nil)
-}
-
-func (c *Opcode) copy(codeMap map[uintptr]*Opcode) *Opcode {
-	if c == nil {
-		return nil
-	}
-	addr := uintptr(unsafe.Pointer(c))
-	if code, exists := codeMap[addr]; exists {
-		return code
-	}
-	copied := &Opcode{
 			Op:         c.Op,
 			Key:        c.Key,
 			PtrNum:     c.PtrNum,
@@ -379,37 +345,73 @@ func (c *Opcode) copy(codeMap map[uintptr]*Opcode) *Opcode {
 			MapPos:     c.MapPos,
 			Size:       c.Size,
 			Indent:     c.Indent,
+			Jmp:        c.Jmp,
 		}
-	codeMap[addr] = copied
+		if c.End != nil {
-	copied.End = c.End.copy(codeMap)
+			ptr.End = getCodeAddrByIdx(head, c.End.DisplayIdx)
-	copied.PrevField = c.PrevField.copy(codeMap)
+		}
-	copied.NextField = c.NextField.copy(codeMap)
+		if c.NextField != nil {
-	copied.Next = c.Next.copy(codeMap)
+			ptr.NextField = getCodeAddrByIdx(head, c.NextField.DisplayIdx)
-	copied.Jmp = c.Jmp
+		}
+		if c.Next != nil {
+			ptr.Next = getCodeAddrByIdx(head, c.Next.DisplayIdx)
+		}
+		if c.IsEnd() {
+			break
+		}
+		ptr = getCodeAddrByIdx(head, c.DisplayIdx+1)
+		c = c.IterNext()
+	}
+	return head
+}
+
+func setTotalLengthToInterfaceOp(code *Opcode) {
+	for c := code; !c.IsEnd(); {
+		if c.Op == OpInterface {
+			c.Length = uint32(code.TotalLength())
+		}
+		c = c.IterNext()
+	}
+}
+
+func ToEndCode(code *Opcode) *Opcode {
+	c := code
+	for !c.IsEnd() {
+		c = c.IterNext()
+	}
+	return c
+}
+
+func copyToInterfaceOpcode(code *Opcode) *Opcode {
+	copied := copyOpcode(code)
+	c := copied
+	c = ToEndCode(c)
+	c.Idx += uintptrSize
+	c.ElemIdx = c.Idx + uintptrSize
+	c.Length = c.Idx + 2*uintptrSize
+	c.Op = OpInterfaceEnd
 	return copied
 }
 
-func (c *Opcode) BeforeLastCode() *Opcode {
+func newOpCodeWithNext(ctx *compileContext, typ *runtime.Type, op OpType, next *Opcode) *Opcode {
-	code := c
+	return &Opcode{
-	for {
+		Op:         op,
-		var nextCode *Opcode
+		Idx:        opcodeOffset(ctx.ptrIndex),
-		switch code.Op.CodeType() {
+		Next:       next,
-		case CodeArrayElem, CodeSliceElem, CodeMapKey:
+		Type:       typ,
-			nextCode = code.End
+		DisplayIdx: ctx.opcodeIndex,
-		default:
+		Indent:     ctx.indent,
-			nextCode = code.Next
 	}
-		if nextCode.Op == OpEnd {
-			return code
-		}
-		code = nextCode
 }
+
+func newEndOp(ctx *compileContext, typ *runtime.Type) *Opcode {
+	return newOpCodeWithNext(ctx, typ, OpEnd, nil)
 }
 
 func (c *Opcode) TotalLength() int {
 	var idx int
 	code := c
-	for code.Op != OpEnd && code.Op != OpInterfaceEnd {
+	for !code.IsEnd() {
 		maxIdx := int(code.MaxIdx() / uintptrSize)
 		if idx < maxIdx {
 			idx = maxIdx
@@ -417,12 +419,7 @@ func (c *Opcode) TotalLength() int {
 		if code.Op == OpRecursiveEnd {
 			break
 		}
-		switch code.Op.CodeType() {
+		code = code.IterNext()
-		case CodeArrayElem, CodeSliceElem, CodeMapKey:
-			code = code.End
-		default:
-			code = code.Next
-		}
 	}
 	maxIdx := int(code.MaxIdx() / uintptrSize)
 	if idx < maxIdx {
@@ -432,7 +429,7 @@ func (c *Opcode) TotalLength() int {
 }
 
 func (c *Opcode) decOpcodeIndex() {
-	for code := c; code.Op != OpEnd; {
+	for code := c; !code.IsEnd(); {
 		code.DisplayIdx--
 		if code.Idx > 0 {
 			code.Idx -= uintptrSize
@@ -446,24 +443,14 @@ func (c *Opcode) decOpcodeIndex() {
 		if code.Length > 0 && code.Op.CodeType() != CodeArrayHead && code.Op.CodeType() != CodeArrayElem {
 			code.Length -= uintptrSize
 		}
-		switch code.Op.CodeType() {
+		code = code.IterNext()
-		case CodeArrayElem, CodeSliceElem, CodeMapKey:
-			code = code.End
-		default:
-			code = code.Next
-		}
 	}
 }
 
 func (c *Opcode) decIndent() {
-	for code := c; code.Op != OpEnd; {
+	for code := c; !code.IsEnd(); {
 		code.Indent--
-		switch code.Op.CodeType() {
+		code = code.IterNext()
-		case CodeArrayElem, CodeSliceElem, CodeMapKey:
-			code = code.End
-		default:
-			code = code.Next
-		}
 	}
 }
 
@@ -475,7 +462,7 @@ func (c *Opcode) dumpHead(code *Opcode) string {
 		length = code.Length / uintptrSize
 	}
 	return fmt.Sprintf(
-		`[%d]%s%s ([idx:%d][elemIdx:%d][length:%d])`,
+		`[%03d]%s%s ([idx:%d][elemIdx:%d][length:%d])`,
 		code.DisplayIdx,
 		strings.Repeat("-", int(code.Indent)),
 		code.Op,
@@ -487,7 +474,7 @@ func (c *Opcode) dumpHead(code *Opcode) string {
 
 func (c *Opcode) dumpMapHead(code *Opcode) string {
 	return fmt.Sprintf(
-		`[%d]%s%s ([idx:%d][elemIdx:%d][length:%d][mapIter:%d])`,
+		`[%03d]%s%s ([idx:%d][elemIdx:%d][length:%d][mapIter:%d])`,
 		code.DisplayIdx,
 		strings.Repeat("-", int(code.Indent)),
 		code.Op,
@@ -500,7 +487,7 @@ func (c *Opcode) dumpMapHead(code *Opcode) string {
 
 func (c *Opcode) dumpMapEnd(code *Opcode) string {
 	return fmt.Sprintf(
-		`[%d]%s%s ([idx:%d][mapPos:%d][length:%d])`,
+		`[%03d]%s%s ([idx:%d][mapPos:%d][length:%d])`,
 		code.DisplayIdx,
 		strings.Repeat("-", int(code.Indent)),
 		code.Op,
@@ -518,7 +505,7 @@ func (c *Opcode) dumpElem(code *Opcode) string {
 		length = code.Length / uintptrSize
 	}
 	return fmt.Sprintf(
-		`[%d]%s%s ([idx:%d][elemIdx:%d][length:%d][size:%d])`,
+		`[%03d]%s%s ([idx:%d][elemIdx:%d][length:%d][size:%d])`,
 		code.DisplayIdx,
 		strings.Repeat("-", int(code.Indent)),
 		code.Op,
@@ -531,7 +518,7 @@ func (c *Opcode) dumpElem(code *Opcode) string {
 
 func (c *Opcode) dumpField(code *Opcode) string {
 	return fmt.Sprintf(
-		`[%d]%s%s ([idx:%d][key:%s][offset:%d])`,
+		`[%03d]%s%s ([idx:%d][key:%s][offset:%d])`,
 		code.DisplayIdx,
 		strings.Repeat("-", int(code.Indent)),
 		code.Op,
@@ -543,7 +530,7 @@ func (c *Opcode) dumpField(code *Opcode) string {
 
 func (c *Opcode) dumpKey(code *Opcode) string {
 	return fmt.Sprintf(
-		`[%d]%s%s ([idx:%d][elemIdx:%d][length:%d][mapIter:%d])`,
+		`[%03d]%s%s ([idx:%d][elemIdx:%d][length:%d][mapIter:%d])`,
 		code.DisplayIdx,
 		strings.Repeat("-", int(code.Indent)),
 		code.Op,
@@ -556,7 +543,7 @@ func (c *Opcode) dumpKey(code *Opcode) string {
 
 func (c *Opcode) dumpValue(code *Opcode) string {
 	return fmt.Sprintf(
-		`[%d]%s%s ([idx:%d][mapIter:%d])`,
+		`[%03d]%s%s ([idx:%d][mapIter:%d])`,
 		code.DisplayIdx,
 		strings.Repeat("-", int(code.Indent)),
 		code.Op,
@@ -567,7 +554,7 @@ func (c *Opcode) dumpValue(code *Opcode) string {
 
 func (c *Opcode) Dump() string {
 	codes := []string{}
-	for code := c; code.Op != OpEnd && code.Op != OpInterfaceEnd; {
+	for code := c; !code.IsEnd(); {
 		switch code.Op.CodeType() {
 		case CodeSliceHead:
 			codes = append(codes, c.dumpHead(code))
@@ -595,7 +582,7 @@ func (c *Opcode) Dump() string {
 			code = code.Next
 		default:
 			codes = append(codes, fmt.Sprintf(
-				"[%d]%s%s ([idx:%d])",
+				"[%03d]%s%s ([idx:%d])",
 				code.DisplayIdx,
 				strings.Repeat("-", int(code.Indent)),
 				code.Op,
@@ -607,44 +594,7 @@ func (c *Opcode) Dump() string {
 	return strings.Join(codes, "\n")
 }
 
-func prevField(code *Opcode, removedFields map[*Opcode]struct{}) *Opcode {
+func newSliceHeaderCode(ctx *compileContext, typ *runtime.Type) *Opcode {
-	if _, exists := removedFields[code]; exists {
-		return prevField(code.PrevField, removedFields)
-	}
-	return code
-}
-
-func nextField(code *Opcode, removedFields map[*Opcode]struct{}) *Opcode {
-	if _, exists := removedFields[code]; exists {
-		return nextField(code.NextField, removedFields)
-	}
-	return code
-}
-
-func linkPrevToNextField(cur *Opcode, removedFields map[*Opcode]struct{}) {
-	prev := prevField(cur.PrevField, removedFields)
-	prev.NextField = nextField(cur.NextField, removedFields)
-	code := prev
-	fcode := cur
-	for {
-		var nextCode *Opcode
-		switch code.Op.CodeType() {
-		case CodeArrayElem, CodeSliceElem, CodeMapKey:
-			nextCode = code.End
-		default:
-			nextCode = code.Next
-		}
-		if nextCode == fcode {
-			code.Next = fcode.NextField
-			break
-		} else if nextCode.Op == OpEnd {
-			break
-		}
-		code = nextCode
-	}
-}
-
-func newSliceHeaderCode(ctx *compileContext) *Opcode {
 	idx := opcodeOffset(ctx.ptrIndex)
 	ctx.incPtrIndex()
 	elemIdx := opcodeOffset(ctx.ptrIndex)
@@ -652,6 +602,7 @@ func newSliceHeaderCode(ctx *compileContext) *Opcode {
 	length := opcodeOffset(ctx.ptrIndex)
 	return &Opcode{
 		Op:         OpSlice,
+		Type:       typ,
 		Idx:        idx,
 		DisplayIdx: ctx.opcodeIndex,
 		ElemIdx:    elemIdx,
@@ -660,9 +611,10 @@ func newSliceHeaderCode(ctx *compileContext) *Opcode {
 	}
 }
 
-func newSliceElemCode(ctx *compileContext, head *Opcode, size uintptr) *Opcode {
+func newSliceElemCode(ctx *compileContext, typ *runtime.Type, head *Opcode, size uintptr) *Opcode {
 	return &Opcode{
 		Op:         OpSliceElem,
+		Type:       typ,
 		Idx:        head.Idx,
 		DisplayIdx: ctx.opcodeIndex,
 		ElemIdx:    head.ElemIdx,
@@ -672,12 +624,13 @@ func newSliceElemCode(ctx *compileContext, head *Opcode, size uintptr) *Opcode {
 	}
 }
 
-func newArrayHeaderCode(ctx *compileContext, alen int) *Opcode {
+func newArrayHeaderCode(ctx *compileContext, typ *runtime.Type, alen int) *Opcode {
 	idx := opcodeOffset(ctx.ptrIndex)
 	ctx.incPtrIndex()
 	elemIdx := opcodeOffset(ctx.ptrIndex)
 	return &Opcode{
 		Op:         OpArray,
+		Type:       typ,
 		Idx:        idx,
 		DisplayIdx: ctx.opcodeIndex,
 		ElemIdx:    elemIdx,
@@ -686,9 +639,10 @@ func newArrayHeaderCode(ctx *compileContext, alen int) *Opcode {
 	}
 }
 
-func newArrayElemCode(ctx *compileContext, head *Opcode, length int, size uintptr) *Opcode {
+func newArrayElemCode(ctx *compileContext, typ *runtime.Type, head *Opcode, length int, size uintptr) *Opcode {
 	return &Opcode{
 		Op:         OpArrayElem,
+		Type:       typ,
 		Idx:        head.Idx,
 		DisplayIdx: ctx.opcodeIndex,
 		ElemIdx:    head.ElemIdx,
@@ -698,7 +652,7 @@ func newArrayElemCode(ctx *compileContext, head *Opcode, length int, size uintpt
 	}
 }
 
-func newMapHeaderCode(ctx *compileContext) *Opcode {
+func newMapHeaderCode(ctx *compileContext, typ *runtime.Type) *Opcode {
 	idx := opcodeOffset(ctx.ptrIndex)
 	ctx.incPtrIndex()
 	elemIdx := opcodeOffset(ctx.ptrIndex)
@@ -708,8 +662,8 @@ func newMapHeaderCode(ctx *compileContext) *Opcode {
 	mapIter := opcodeOffset(ctx.ptrIndex)
 	return &Opcode{
 		Op:         OpMap,
+		Type:       typ,
 		Idx:        idx,
-		Type:       ctx.typ,
 		DisplayIdx: ctx.opcodeIndex,
 		ElemIdx:    elemIdx,
 		Length:     length,
@@ -718,9 +672,10 @@ func newMapHeaderCode(ctx *compileContext) *Opcode {
 	}
 }
 
-func newMapKeyCode(ctx *compileContext, head *Opcode) *Opcode {
+func newMapKeyCode(ctx *compileContext, typ *runtime.Type, head *Opcode) *Opcode {
 	return &Opcode{
 		Op:         OpMapKey,
+		Type:       typ,
 		Idx:        opcodeOffset(ctx.ptrIndex),
 		DisplayIdx: ctx.opcodeIndex,
 		ElemIdx:    head.ElemIdx,
@@ -730,9 +685,10 @@ func newMapKeyCode(ctx *compileContext, head *Opcode) *Opcode {
 	}
 }
 
-func newMapValueCode(ctx *compileContext, head *Opcode) *Opcode {
+func newMapValueCode(ctx *compileContext, typ *runtime.Type, head *Opcode) *Opcode {
 	return &Opcode{
 		Op:         OpMapValue,
+		Type:       typ,
 		Idx:        opcodeOffset(ctx.ptrIndex),
 		DisplayIdx: ctx.opcodeIndex,
 		ElemIdx:    head.ElemIdx,
@@ -742,14 +698,15 @@ func newMapValueCode(ctx *compileContext, head *Opcode) *Opcode {
 	}
 }
 
-func newMapEndCode(ctx *compileContext, head *Opcode) *Opcode {
+func newMapEndCode(ctx *compileContext, typ *runtime.Type, head *Opcode) *Opcode {
 	mapPos := opcodeOffset(ctx.ptrIndex)
 	ctx.incPtrIndex()
 	idx := opcodeOffset(ctx.ptrIndex)
 	return &Opcode{
 		Op:         OpMapEnd,
+		Type:       typ,
 		Idx:        idx,
-		Next:       newEndOp(ctx),
+		Next:       newEndOp(ctx, typ),
 		DisplayIdx: ctx.opcodeIndex,
 		Length:     head.Length,
 		MapPos:     mapPos,
@@ -757,28 +714,12 @@ func newMapEndCode(ctx *compileContext, head *Opcode) *Opcode {
 	}
 }
 
-func newInterfaceCode(ctx *compileContext) *Opcode {
+func newRecursiveCode(ctx *compileContext, typ *runtime.Type, jmp *CompiledCode) *Opcode {
-	var flag OpFlags
-	if ctx.typ.NumMethod() > 0 {
-		flag |= NonEmptyInterfaceFlags
-	}
-	return &Opcode{
-		Op:         OpInterface,
-		Idx:        opcodeOffset(ctx.ptrIndex),
-		Next:       newEndOp(ctx),
-		Type:       ctx.typ,
-		DisplayIdx: ctx.opcodeIndex,
-		Indent:     ctx.indent,
-		Flags:      flag,
-	}
-}
-
-func newRecursiveCode(ctx *compileContext, jmp *CompiledCode) *Opcode {
 	return &Opcode{
 		Op:         OpRecursive,
+		Type:       typ,
 		Idx:        opcodeOffset(ctx.ptrIndex),
-		Next:       newEndOp(ctx),
+		Next:       newEndOp(ctx, typ),
-		Type:       ctx.typ,
 		DisplayIdx: ctx.opcodeIndex,
 		Indent:     ctx.indent,
 		Jmp:        jmp,

size_test.go

@@ -11,8 +11,8 @@ func TestOpcodeSize(t *testing.T) {
 	const uintptrSize = 4 << (^uintptr(0) >> 63)
 	if uintptrSize == 8 {
 		size := unsafe.Sizeof(encoder.Opcode{})
-		if size != 128 {
+		if size != 120 {
-			t.Fatalf("unexpected opcode size: expected 128bytes but got %dbytes", size)
+			t.Fatalf("unexpected opcode size: expected 120bytes but got %dbytes", size)
 		}
 	}
 }

test/cover/cover_array_test.go

@@ -2,6 +2,7 @@ package json_test
 
 import (
 	"bytes"
+	"fmt"
 	"testing"
 
 	"github.com/goccy/go-json"
@@ -1840,6 +1841,7 @@ func TestCoverArray(t *testing.T) {
 	for _, test := range tests {
 		for _, indent := range []bool{true, false} {
 			for _, htmlEscape := range []bool{true, false} {
+				t.Run(fmt.Sprintf("%s_indent_%t_escape_%t", test.name, indent, htmlEscape), func(t *testing.T) {
 					var buf bytes.Buffer
 					enc := json.NewEncoder(&buf)
 					enc.SetEscapeHTML(htmlEscape)
@@ -1853,6 +1855,7 @@ func TestCoverArray(t *testing.T) {
 					if buf.String() != stdresult {
 						t.Errorf("%s(htmlEscape:%v,indent:%v): doesn't compatible with encoding/json. expected %q but got %q", test.name, htmlEscape, indent, stdresult, buf.String())
 					}
+				})
 			}
 		}
 	}

test/cover/cover_bool_test.go

@@ -3,6 +3,7 @@ package json_test
 import (
 	"bytes"
 	stdjson "encoding/json"
+	"fmt"
 	"testing"
 
 	"github.com/goccy/go-json"
@@ -2653,6 +2654,7 @@ func TestCoverBool(t *testing.T) {
 	for _, test := range tests {
 		for _, indent := range []bool{true, false} {
 			for _, htmlEscape := range []bool{true, false} {
+				t.Run(fmt.Sprintf("%s_indent_%t_escape_%t", test.name, indent, htmlEscape), func(t *testing.T) {
 					var buf bytes.Buffer
 					enc := json.NewEncoder(&buf)
 					enc.SetEscapeHTML(htmlEscape)
@@ -2666,6 +2668,7 @@ func TestCoverBool(t *testing.T) {
 					if buf.String() != stdresult {
 						t.Errorf("%s(htmlEscape:%v,indent:%v): doesn't compatible with encoding/json. expected %q but got %q", test.name, htmlEscape, indent, stdresult, buf.String())
 					}
+				})
 			}
 		}
 	}

test/cover/cover_bytes_test.go

@@ -2,6 +2,7 @@ package json_test
 
 import (
 	"bytes"
+	"fmt"
 	"testing"
 
 	"github.com/goccy/go-json"
@@ -1807,6 +1808,7 @@ func TestCoverBytes(t *testing.T) {
 	for _, test := range tests {
 		for _, indent := range []bool{true, false} {
 			for _, htmlEscape := range []bool{true, false} {
+				t.Run(fmt.Sprintf("%s_indent_%t_escape_%t", test.name, indent, htmlEscape), func(t *testing.T) {
 					var buf bytes.Buffer
 					enc := json.NewEncoder(&buf)
 					enc.SetEscapeHTML(htmlEscape)
@@ -1820,6 +1822,7 @@ func TestCoverBytes(t *testing.T) {
 					if buf.String() != stdresult {
 						t.Errorf("%s(htmlEscape:%v,indent:%v): doesn't compatible with encoding/json. expected %q but got %q", test.name, htmlEscape, indent, stdresult, buf.String())
 					}
+				})
 			}
 		}
 	}

test/cover/cover_float32_test.go

@@ -2,6 +2,7 @@ package json_test
 
 import (
 	"bytes"
+	"fmt"
 	"testing"
 
 	"github.com/goccy/go-json"
@@ -2334,6 +2335,7 @@ func TestCoverFloat32(t *testing.T) {
 	for _, test := range tests {
 		for _, indent := range []bool{true, false} {
 			for _, htmlEscape := range []bool{true, false} {
+				t.Run(fmt.Sprintf("%s_indent_%t_escape_%t", test.name, indent, htmlEscape), func(t *testing.T) {
 					var buf bytes.Buffer
 					enc := json.NewEncoder(&buf)
 					enc.SetEscapeHTML(htmlEscape)
@@ -2347,6 +2349,7 @@ func TestCoverFloat32(t *testing.T) {
 					if buf.String() != stdresult {
 						t.Errorf("%s(htmlEscape:%T): doesn't compatible with encoding/json. expected %q but got %q", test.name, htmlEscape, stdresult, buf.String())
 					}
+				})
 			}
 		}
 	}

test/cover/cover_float64_test.go

@@ -2,6 +2,7 @@ package json_test
 
 import (
 	"bytes"
+	"fmt"
 	"testing"
 
 	"github.com/goccy/go-json"
@@ -2334,6 +2335,7 @@ func TestCoverFloat64(t *testing.T) {
 	for _, test := range tests {
 		for _, indent := range []bool{true, false} {
 			for _, htmlEscape := range []bool{true, false} {
+				t.Run(fmt.Sprintf("%s_indent_%t_escape_%t", test.name, indent, htmlEscape), func(t *testing.T) {
 					var buf bytes.Buffer
 					enc := json.NewEncoder(&buf)
 					enc.SetEscapeHTML(htmlEscape)
@@ -2347,6 +2349,7 @@ func TestCoverFloat64(t *testing.T) {
 					if buf.String() != stdresult {
 						t.Errorf("%s(htmlEscape:%T): doesn't compatible with encoding/json. expected %q but got %q", test.name, htmlEscape, stdresult, buf.String())
 					}
+				})
 			}
 		}
 	}

test/cover/cover_int16_test.go

@@ -2,6 +2,7 @@ package json_test
 
 import (
 	"bytes"
+	"fmt"
 	"testing"
 
 	"github.com/goccy/go-json"
@@ -1811,6 +1812,7 @@ func TestCoverInt16(t *testing.T) {
 	for _, test := range tests {
 		for _, indent := range []bool{true, false} {
 			for _, htmlEscape := range []bool{true, false} {
+				t.Run(fmt.Sprintf("%s_indent_%t_escape_%t", test.name, indent, htmlEscape), func(t *testing.T) {
 					var buf bytes.Buffer
 					enc := json.NewEncoder(&buf)
 					enc.SetEscapeHTML(htmlEscape)
@@ -1824,6 +1826,7 @@ func TestCoverInt16(t *testing.T) {
 					if buf.String() != stdresult {
 						t.Errorf("%s(htmlEscape:%T): doesn't compatible with encoding/json. expected %q but got %q", test.name, htmlEscape, stdresult, buf.String())
 					}
+				})
 			}
 		}
 	}

test/cover/cover_int32_test.go

@@ -2,6 +2,7 @@ package json_test
 
 import (
 	"bytes"
+	"fmt"
 	"testing"
 
 	"github.com/goccy/go-json"
@@ -1788,6 +1789,7 @@ func TestCoverInt32(t *testing.T) {
 	for _, test := range tests {
 		for _, indent := range []bool{true, false} {
 			for _, htmlEscape := range []bool{true, false} {
+				t.Run(fmt.Sprintf("%s_indent_%t_escape_%t", test.name, indent, htmlEscape), func(t *testing.T) {
 					var buf bytes.Buffer
 					enc := json.NewEncoder(&buf)
 					enc.SetEscapeHTML(htmlEscape)
@@ -1801,6 +1803,7 @@ func TestCoverInt32(t *testing.T) {
 					if buf.String() != stdresult {
 						t.Errorf("%s(htmlEscape:%T): doesn't compatible with encoding/json. expected %q but got %q", test.name, htmlEscape, stdresult, buf.String())
 					}
+				})
 			}
 		}
 	}

test/cover/cover_int64_test.go

@@ -2,6 +2,7 @@ package json_test
 
 import (
 	"bytes"
+	"fmt"
 	"testing"
 
 	"github.com/goccy/go-json"
@@ -1788,6 +1789,7 @@ func TestCoverInt64(t *testing.T) {
 	for _, test := range tests {
 		for _, indent := range []bool{true, false} {
 			for _, htmlEscape := range []bool{true, false} {
+				t.Run(fmt.Sprintf("%s_indent_%t_escape_%t", test.name, indent, htmlEscape), func(t *testing.T) {
 					var buf bytes.Buffer
 					enc := json.NewEncoder(&buf)
 					enc.SetEscapeHTML(htmlEscape)
@@ -1801,6 +1803,7 @@ func TestCoverInt64(t *testing.T) {
 					if buf.String() != stdresult {
 						t.Errorf("%s(htmlEscape:%T): doesn't compatible with encoding/json. expected %q but got %q", test.name, htmlEscape, stdresult, buf.String())
 					}
+				})
 			}
 		}
 	}

test/cover/cover_int8_test.go

@@ -2,6 +2,7 @@ package json_test
 
 import (
 	"bytes"
+	"fmt"
 	"testing"
 
 	"github.com/goccy/go-json"
@@ -1788,6 +1789,7 @@ func TestCoverInt8(t *testing.T) {
 	for _, test := range tests {
 		for _, indent := range []bool{true, false} {
 			for _, htmlEscape := range []bool{true, false} {
+				t.Run(fmt.Sprintf("%s_indent_%t_escape_%t", test.name, indent, htmlEscape), func(t *testing.T) {
 					var buf bytes.Buffer
 					enc := json.NewEncoder(&buf)
 					enc.SetEscapeHTML(htmlEscape)
@@ -1801,6 +1803,7 @@ func TestCoverInt8(t *testing.T) {
 					if buf.String() != stdresult {
 						t.Errorf("%s(htmlEscape:%T): doesn't compatible with encoding/json. expected %q but got %q", test.name, htmlEscape, stdresult, buf.String())
 					}
+				})
 			}
 		}
 	}

test/cover/cover_int_test.go

@@ -2,6 +2,7 @@ package json_test
 
 import (
 	"bytes"
+	"fmt"
 	"testing"
 
 	"github.com/goccy/go-json"
@@ -2410,6 +2411,7 @@ func TestCoverInt(t *testing.T) {
 	for _, test := range tests {
 		for _, indent := range []bool{true, false} {
 			for _, htmlEscape := range []bool{true, false} {
+				t.Run(fmt.Sprintf("%s_indent_%t_escape_%t", test.name, indent, htmlEscape), func(t *testing.T) {
 					var buf bytes.Buffer
 					enc := json.NewEncoder(&buf)
 					enc.SetEscapeHTML(htmlEscape)
@@ -2423,6 +2425,7 @@ func TestCoverInt(t *testing.T) {
 					if buf.String() != stdresult {
 						t.Errorf("%s(htmlEscape:%v,indent:%v): doesn't compatible with encoding/json. expected %q but got %q", test.name, htmlEscape, indent, stdresult, buf.String())
 					}
+				})
 			}
 		}
 	}

test/cover/cover_map_test.go

@@ -2,6 +2,7 @@ package json_test
 
 import (
 	"bytes"
+	"fmt"
 	"testing"
 
 	"github.com/goccy/go-json"
@@ -1881,6 +1882,7 @@ func TestCoverMap(t *testing.T) {
 	for _, test := range tests {
 		for _, indent := range []bool{true, false} {
 			for _, htmlEscape := range []bool{true, false} {
+				t.Run(fmt.Sprintf("%s_indent_%t_escape_%t", test.name, indent, htmlEscape), func(t *testing.T) {
 					var buf bytes.Buffer
 					enc := json.NewEncoder(&buf)
 					enc.SetEscapeHTML(htmlEscape)
@@ -1894,6 +1896,7 @@ func TestCoverMap(t *testing.T) {
 					if buf.String() != stdresult {
 						t.Errorf("%s(htmlEscape:%v,indent:%v): doesn't compatible with encoding/json. expected %q but got %q", test.name, htmlEscape, indent, stdresult, buf.String())
 					}
+				})
 			}
 		}
 	}

test/cover/cover_marshal_json_test.go

@@ -3690,6 +3690,7 @@ func TestCoverMarshalJSON(t *testing.T) {
 		t.Run(test.name, func(t *testing.T) {
 			for _, indent := range []bool{true, false} {
 				for _, htmlEscape := range []bool{true, false} {
+					t.Run(fmt.Sprintf("%s_indent_%t_escape_%t", test.name, indent, htmlEscape), func(t *testing.T) {
 						var buf bytes.Buffer
 						enc := json.NewEncoder(&buf)
 						enc.SetEscapeHTML(htmlEscape)
@@ -3703,6 +3704,7 @@ func TestCoverMarshalJSON(t *testing.T) {
 						if buf.String() != stdresult {
 							t.Errorf("%s(htmlEscape:%v,indent:%v): doesn't compatible with encoding/json. expected %q but got %q", test.name, htmlEscape, indent, stdresult, buf.String())
 						}
+					})
 				}
 			}
 		})

test/cover/cover_marshal_text_test.go

@@ -2,6 +2,7 @@ package json_test
 
 import (
 	"bytes"
+	"fmt"
 	"testing"
 
 	"github.com/goccy/go-json"
@@ -3527,6 +3528,7 @@ func TestCoverMarshalText(t *testing.T) {
 	for _, test := range tests {
 		for _, indent := range []bool{true, false} {
 			for _, htmlEscape := range []bool{true, false} {
+				t.Run(fmt.Sprintf("%s_indent_%t_escape_%t", test.name, indent, htmlEscape), func(t *testing.T) {
 					var buf bytes.Buffer
 					enc := json.NewEncoder(&buf)
 					enc.SetEscapeHTML(htmlEscape)
@@ -3540,6 +3542,7 @@ func TestCoverMarshalText(t *testing.T) {
 					if buf.String() != stdresult {
 						t.Errorf("%s(htmlEscape:%v,indent:%v): doesn't compatible with encoding/json. expected %q but got %q", test.name, htmlEscape, indent, stdresult, buf.String())
 					}
+				})
 			}
 		}
 	}

test/cover/cover_number_test.go

@@ -2,6 +2,7 @@ package json_test
 
 import (
 	"bytes"
+	"fmt"
 	"testing"
 
 	"github.com/goccy/go-json"
@@ -2334,6 +2335,7 @@ func TestCoverNumber(t *testing.T) {
 	for _, test := range tests {
 		for _, indent := range []bool{true, false} {
 			for _, htmlEscape := range []bool{true, false} {
+				t.Run(fmt.Sprintf("%s_indent_%t_escape_%t", test.name, indent, htmlEscape), func(t *testing.T) {
 					var buf bytes.Buffer
 					enc := json.NewEncoder(&buf)
 					enc.SetEscapeHTML(htmlEscape)
@@ -2347,6 +2349,7 @@ func TestCoverNumber(t *testing.T) {
 					if buf.String() != stdresult {
 						t.Errorf("%s(htmlEscape:%v,indent:%v): doesn't compatible with encoding/json. expected %q but got %q", test.name, htmlEscape, indent, stdresult, buf.String())
 					}
+				})
 			}
 		}
 	}

test/cover/cover_slice_test.go

@@ -2,6 +2,7 @@ package json_test
 
 import (
 	"bytes"
+	"fmt"
 	"testing"
 
 	"github.com/goccy/go-json"
@@ -2047,9 +2048,9 @@ func TestCoverSlice(t *testing.T) {
 		},
 	}
 	for _, test := range tests {
-		t.Run(test.name, func(t *testing.T) {
 		for _, indent := range []bool{true, false} {
 			for _, htmlEscape := range []bool{true, false} {
+				t.Run(fmt.Sprintf("%s_indent_%t_escape_%t", test.name, indent, htmlEscape), func(t *testing.T) {
 					var buf bytes.Buffer
 					enc := json.NewEncoder(&buf)
 					enc.SetEscapeHTML(htmlEscape)
@@ -2063,8 +2064,8 @@ func TestCoverSlice(t *testing.T) {
 					if buf.String() != stdresult {
 						t.Errorf("%s(htmlEscape:%v,indent:%v): doesn't compatible with encoding/json. expected %q but got %q", test.name, htmlEscape, indent, stdresult, buf.String())
 					}
-				}
-			}
 				})
 			}
 		}
+	}
+}

test/cover/cover_string_test.go

@@ -2,6 +2,7 @@ package json_test
 
 import (
 	"bytes"
+	"fmt"
 	"testing"
 
 	"github.com/goccy/go-json"
@@ -2370,6 +2371,7 @@ func TestCoverString(t *testing.T) {
 	for _, test := range tests {
 		for _, indent := range []bool{true, false} {
 			for _, htmlEscape := range []bool{true, false} {
+				t.Run(fmt.Sprintf("%s_indent_%t_escape_%t", test.name, indent, htmlEscape), func(t *testing.T) {
 					var buf bytes.Buffer
 					enc := json.NewEncoder(&buf)
 					enc.SetEscapeHTML(htmlEscape)
@@ -2383,6 +2385,7 @@ func TestCoverString(t *testing.T) {
 					if buf.String() != stdresult {
 						t.Errorf("%s(htmlEscape:%v,indent:%v): doesn't compatible with encoding/json. expected %q but got %q", test.name, htmlEscape, indent, stdresult, buf.String())
 					}
+				})
 			}
 		}
 	}

test/cover/cover_uint16_test.go

@@ -2,6 +2,7 @@ package json_test
 
 import (
 	"bytes"
+	"fmt"
 	"testing"
 
 	"github.com/goccy/go-json"
@@ -1788,6 +1789,7 @@ func TestCoverUint16(t *testing.T) {
 	for _, test := range tests {
 		for _, indent := range []bool{true, false} {
 			for _, htmlEscape := range []bool{true, false} {
+				t.Run(fmt.Sprintf("%s_indent_%t_escape_%t", test.name, indent, htmlEscape), func(t *testing.T) {
 					var buf bytes.Buffer
 					enc := json.NewEncoder(&buf)
 					enc.SetEscapeHTML(htmlEscape)
@@ -1801,6 +1803,7 @@ func TestCoverUint16(t *testing.T) {
 					if buf.String() != stdresult {
 						t.Errorf("%s(htmlEscape:%v,indent:%v): doesn't compatible with encoding/json. expected %q but got %q", test.name, htmlEscape, indent, stdresult, buf.String())
 					}
+				})
 			}
 		}
 	}

test/cover/cover_uint32_test.go

@@ -2,6 +2,7 @@ package json_test
 
 import (
 	"bytes"
+	"fmt"
 	"testing"
 
 	"github.com/goccy/go-json"
@@ -1788,6 +1789,7 @@ func TestCoverUint32(t *testing.T) {
 	for _, test := range tests {
 		for _, indent := range []bool{true, false} {
 			for _, htmlEscape := range []bool{true, false} {
+				t.Run(fmt.Sprintf("%s_indent_%t_escape_%t", test.name, indent, htmlEscape), func(t *testing.T) {
 					var buf bytes.Buffer
 					enc := json.NewEncoder(&buf)
 					enc.SetEscapeHTML(htmlEscape)
@@ -1801,6 +1803,7 @@ func TestCoverUint32(t *testing.T) {
 					if buf.String() != stdresult {
 						t.Errorf("%s(htmlEscape:%T): doesn't compatible with encoding/json. expected %q but got %q", test.name, htmlEscape, stdresult, buf.String())
 					}
+				})
 			}
 		}
 	}

test/cover/cover_uint64_test.go

@@ -2,6 +2,7 @@ package json_test
 
 import (
 	"bytes"
+	"fmt"
 	"testing"
 
 	"github.com/goccy/go-json"
@@ -1788,6 +1789,7 @@ func TestCoverUint64(t *testing.T) {
 	for _, test := range tests {
 		for _, indent := range []bool{true, false} {
 			for _, htmlEscape := range []bool{true, false} {
+				t.Run(fmt.Sprintf("%s_indent_%t_escape_%t", test.name, indent, htmlEscape), func(t *testing.T) {
 					var buf bytes.Buffer
 					enc := json.NewEncoder(&buf)
 					enc.SetEscapeHTML(htmlEscape)
@@ -1801,6 +1803,7 @@ func TestCoverUint64(t *testing.T) {
 					if buf.String() != stdresult {
 						t.Errorf("%s(htmlEscape:%T): doesn't compatible with encoding/json. expected %q but got %q", test.name, htmlEscape, stdresult, buf.String())
 					}
+				})
 			}
 		}
 	}

test/cover/cover_uint8_test.go

@@ -2,6 +2,7 @@ package json_test
 
 import (
 	"bytes"
+	"fmt"
 	"testing"
 
 	"github.com/goccy/go-json"
@@ -1788,6 +1789,7 @@ func TestCoverUint8(t *testing.T) {
 	for _, test := range tests {
 		for _, indent := range []bool{true, false} {
 			for _, htmlEscape := range []bool{true, false} {
+				t.Run(fmt.Sprintf("%s_indent_%t_escape_%t", test.name, indent, htmlEscape), func(t *testing.T) {
 					var buf bytes.Buffer
 					enc := json.NewEncoder(&buf)
 					enc.SetEscapeHTML(htmlEscape)
@@ -1801,6 +1803,7 @@ func TestCoverUint8(t *testing.T) {
 					if buf.String() != stdresult {
 						t.Errorf("%s(htmlEscape:%T): doesn't compatible with encoding/json. expected %q but got %q", test.name, htmlEscape, stdresult, buf.String())
 					}
+				})
 			}
 		}
 	}

test/cover/cover_uint_test.go

@@ -2,6 +2,7 @@ package json_test
 
 import (
 	"bytes"
+	"fmt"
 	"testing"
 
 	"github.com/goccy/go-json"
@@ -2334,6 +2335,7 @@ func TestCoverUint(t *testing.T) {
 	for _, test := range tests {
 		for _, indent := range []bool{true, false} {
 			for _, htmlEscape := range []bool{true, false} {
+				t.Run(fmt.Sprintf("%s_indent_%t_escape_%t", test.name, indent, htmlEscape), func(t *testing.T) {
 					var buf bytes.Buffer
 					enc := json.NewEncoder(&buf)
 					enc.SetEscapeHTML(htmlEscape)
@@ -2347,6 +2349,7 @@ func TestCoverUint(t *testing.T) {
 					if buf.String() != stdresult {
 						t.Errorf("%s(htmlEscape:%T): doesn't compatible with encoding/json. expected %q but got %q", test.name, htmlEscape, stdresult, buf.String())
 					}
+				})
 			}
 		}
 	}