diff --git a/encode_vm.go b/encode_vm.go
index ddb7ca8..3240584 100644
--- a/encode_vm.go
+++ b/encode_vm.go
@@ -185,8 +185,8 @@ func (e *Encoder) run(ctx *encodeRuntimeContext, code *opcode) error {
 			code = code.next
 		case opBytes:
 			ptr := load(ctxptr, code.idx)
-			header := *(**sliceHeader)(unsafe.Pointer(&ptr))
-			if ptr == 0 || uintptr(header.data) == 0 {
+			slice := e.ptrToSlice(ptr)
+			if ptr == 0 || uintptr(slice.data) == 0 {
 				e.encodeNull()
 			} else {
 				e.encodeByteSlice(e.ptrToBytes(ptr))
@@ -195,8 +195,8 @@ func (e *Encoder) run(ctx *encodeRuntimeContext, code *opcode) error {
 			code = code.next
 		case opBytesIndent:
 			ptr := load(ctxptr, code.idx)
-			header := (*sliceHeader)(unsafe.Pointer(&ptr))
-			if ptr == 0 || uintptr(header.data) == 0 {
+			slice := e.ptrToSlice(ptr)
+			if ptr == 0 || uintptr(slice.data) == 0 {
 				e.encodeNull()
 			} else {
 				e.encodeByteSlice(e.ptrToBytes(ptr))
@@ -211,17 +211,11 @@ func (e *Encoder) run(ctx *encodeRuntimeContext, code *opcode) error {
 				code = code.next
 				break
 			}
-			v := *(*interface{})(unsafe.Pointer(&interfaceHeader{
-				typ: code.typ,
-				ptr: *(*unsafe.Pointer)(unsafe.Pointer(&ptr)),
-			}))
 			if _, exists := seenPtr[ptr]; exists {
-				return &UnsupportedValueError{
-					Value: reflect.ValueOf(v),
-					Str:   fmt.Sprintf("encountered a cycle via %s", code.typ),
-				}
+				return errUnsupportedValue(code, ptr)
 			}
 			seenPtr[ptr] = struct{}{}
+			v := e.ptrToInterface(code, ptr)
 			rv := reflect.ValueOf(v)
 			if rv.IsNil() {
 				e.encodeNull()
@@ -293,17 +287,11 @@ func (e *Encoder) run(ctx *encodeRuntimeContext, code *opcode) error {
 				code = code.next
 				break
 			}
-			v := *(*interface{})(unsafe.Pointer(&interfaceHeader{
-				typ: code.typ,
-				ptr: *(*unsafe.Pointer)(unsafe.Pointer(&ptr)),
-			}))
 			if _, exists := seenPtr[ptr]; exists {
-				return &UnsupportedValueError{
-					Value: reflect.ValueOf(v),
-					Str:   fmt.Sprintf("encountered a cycle via %s", code.typ),
-				}
+				return errUnsupportedValue(code, ptr)
 			}
 			seenPtr[ptr] = struct{}{}
+			v := e.ptrToInterface(code, ptr)
 			rv := reflect.ValueOf(v)
 			if rv.IsNil() {
 				e.encodeNull()
@@ -376,10 +364,7 @@ func (e *Encoder) run(ctx *encodeRuntimeContext, code *opcode) error {
 			code = code.next
 		case opMarshalJSON:
 			ptr := load(ctxptr, code.idx)
-			v := *(*interface{})(unsafe.Pointer(&interfaceHeader{
-				typ: code.typ,
-				ptr: *(*unsafe.Pointer)(unsafe.Pointer(&ptr)),
-			}))
+			v := e.ptrToInterface(code, ptr)
 			b, err := v.(Marshaler).MarshalJSON()
 			if err != nil {
 				return errMarshaler(code, err)
@@ -391,29 +376,15 @@ func (e *Encoder) run(ctx *encodeRuntimeContext, code *opcode) error {
 				)
 			}
 			var buf bytes.Buffer
-			if e.enabledIndent {
-				if err := encodeWithIndent(
-					&buf,
-					b,
-					string(e.prefix)+string(bytes.Repeat(e.indentStr, code.indent)),
-					string(e.indentStr),
-				); err != nil {
-					return err
-				}
-			} else {
-				if err := compact(&buf, b, e.enabledHTMLEscape); err != nil {
-					return err
-				}
+			if err := compact(&buf, b, e.enabledHTMLEscape); err != nil {
+				return err
 			}
 			e.encodeBytes(buf.Bytes())
 			e.encodeByte(',')
 			code = code.next
 		case opMarshalJSONIndent:
 			ptr := load(ctxptr, code.idx)
-			v := *(*interface{})(unsafe.Pointer(&interfaceHeader{
-				typ: code.typ,
-				ptr: *(*unsafe.Pointer)(unsafe.Pointer(&ptr)),
-			}))
+			v := e.ptrToInterface(code, ptr)
 			b, err := v.(Marshaler).MarshalJSON()
 			if err != nil {
 				return errMarshaler(code, err)
@@ -425,19 +396,13 @@ func (e *Encoder) run(ctx *encodeRuntimeContext, code *opcode) error {
 				)
 			}
 			var buf bytes.Buffer
-			if e.enabledIndent {
-				if err := encodeWithIndent(
-					&buf,
-					b,
-					string(e.prefix)+string(bytes.Repeat(e.indentStr, code.indent)),
-					string(e.indentStr),
-				); err != nil {
-					return err
-				}
-			} else {
-				if err := compact(&buf, b, e.enabledHTMLEscape); err != nil {
-					return err
-				}
+			if err := encodeWithIndent(
+				&buf,
+				b,
+				string(e.prefix)+string(bytes.Repeat(e.indentStr, code.indent)),
+				string(e.indentStr),
+			); err != nil {
+				return err
 			}
 			e.encodeBytes(buf.Bytes())
 			e.encodeBytes([]byte{',', '\n'})
@@ -445,13 +410,12 @@ func (e *Encoder) run(ctx *encodeRuntimeContext, code *opcode) error {
 		case opMarshalText:
 			ptr := load(ctxptr, code.idx)
 			isPtr := code.typ.Kind() == reflect.Ptr
-			p := *(*unsafe.Pointer)(unsafe.Pointer(&ptr))
+			p := e.ptrToUnsafePtr(ptr)
 			if p == nil {
 				e.encodeNull()
 				e.encodeByte(',')
 			} else if isPtr && *(*unsafe.Pointer)(p) == nil {
-				e.encodeBytes([]byte{'"', '"'})
-				e.encodeByte(',')
+				e.encodeBytes([]byte{'"', '"', ','})
 			} else {
 				if isPtr && code.typ.Elem().Implements(marshalTextType) {
 					p = *(*unsafe.Pointer)(p)
@@ -471,13 +435,12 @@ func (e *Encoder) run(ctx *encodeRuntimeContext, code *opcode) error {
 		case opMarshalTextIndent:
 			ptr := load(ctxptr, code.idx)
 			isPtr := code.typ.Kind() == reflect.Ptr
-			p := *(*unsafe.Pointer)(unsafe.Pointer(&ptr))
+			p := e.ptrToUnsafePtr(ptr)
 			if p == nil {
 				e.encodeNull()
 				e.encodeBytes([]byte{',', '\n'})
 			} else if isPtr && *(*unsafe.Pointer)(p) == nil {
-				e.encodeBytes([]byte{'"', '"'})
-				e.encodeBytes([]byte{',', '\n'})
+				e.encodeBytes([]byte{'"', '"', ',', '\n'})
 			} else {
 				if isPtr && code.typ.Elem().Implements(marshalTextType) {
 					p = *(*unsafe.Pointer)(p)
@@ -496,19 +459,19 @@ func (e *Encoder) run(ctx *encodeRuntimeContext, code *opcode) error {
 			code = code.next
 		case opSliceHead:
 			p := load(ctxptr, code.idx)
-			header := *(**sliceHeader)(unsafe.Pointer(&p))
-			if p == 0 || uintptr(header.data) == 0 {
+			slice := e.ptrToSlice(p)
+			if p == 0 || uintptr(slice.data) == 0 {
 				e.encodeNull()
 				e.encodeByte(',')
 				code = code.end.next
 			} else {
 				store(ctxptr, code.elemIdx, 0)
-				store(ctxptr, code.length, uintptr(header.len))
-				store(ctxptr, code.idx, uintptr(header.data))
-				if header.len > 0 {
+				store(ctxptr, code.length, uintptr(slice.len))
+				store(ctxptr, code.idx, uintptr(slice.data))
+				if slice.len > 0 {
 					e.encodeByte('[')
 					code = code.next
-					store(ctxptr, code.idx, uintptr(header.data))
+					store(ctxptr, code.idx, uintptr(slice.data))
 				} else {
 					e.encodeBytes([]byte{'[', ']', ','})
 					code = code.end.next
@@ -538,15 +501,15 @@ func (e *Encoder) run(ctx *encodeRuntimeContext, code *opcode) error {
 				e.encodeBytes([]byte{',', '\n'})
 				code = code.end.next
 			} else {
-				header := *(**sliceHeader)(unsafe.Pointer(&p))
+				slice := e.ptrToSlice(p)
 				store(ctxptr, code.elemIdx, 0)
-				store(ctxptr, code.length, uintptr(header.len))
-				store(ctxptr, code.idx, uintptr(header.data))
-				if header.len > 0 {
+				store(ctxptr, code.length, uintptr(slice.len))
+				store(ctxptr, code.idx, uintptr(slice.data))
+				if slice.len > 0 {
 					e.encodeBytes([]byte{'[', '\n'})
 					e.encodeIndent(code.indent + 1)
 					code = code.next
-					store(ctxptr, code.idx, uintptr(header.data))
+					store(ctxptr, code.idx, uintptr(slice.data))
 				} else {
 					e.encodeIndent(code.indent)
 					e.encodeBytes([]byte{'[', ']', '\n'})
@@ -561,15 +524,15 @@ func (e *Encoder) run(ctx *encodeRuntimeContext, code *opcode) error {
 				e.encodeBytes([]byte{',', '\n'})
 				code = code.end.next
 			} else {
-				header := *(**sliceHeader)(unsafe.Pointer(&p))
+				slice := e.ptrToSlice(p)
 				store(ctxptr, code.elemIdx, 0)
-				store(ctxptr, code.length, uintptr(header.len))
-				store(ctxptr, code.idx, uintptr(header.data))
-				if header.len > 0 {
+				store(ctxptr, code.length, uintptr(slice.len))
+				store(ctxptr, code.idx, uintptr(slice.data))
+				if slice.len > 0 {
 					e.encodeBytes([]byte{'[', '\n'})
 					e.encodeIndent(code.indent + 1)
 					code = code.next
-					store(ctxptr, code.idx, uintptr(header.data))
+					store(ctxptr, code.idx, uintptr(slice.data))
 				} else {
 					e.encodeIndent(code.indent)
 					e.encodeBytes([]byte{'[', ']', ',', '\n'})
@@ -686,7 +649,7 @@ func (e *Encoder) run(ctx *encodeRuntimeContext, code *opcode) error {
 				e.encodeByte(',')
 				code = code.end.next
 			} else {
-				uptr := *(*unsafe.Pointer)(unsafe.Pointer(&ptr))
+				uptr := e.ptrToUnsafePtr(ptr)
 				mlen := maplen(uptr)
 				if mlen > 0 {
 					e.encodeByte('{')
@@ -718,8 +681,8 @@ func (e *Encoder) run(ctx *encodeRuntimeContext, code *opcode) error {
 				code = code.end.next
 			} else {
 				// load pointer
-				ptr = uintptr(**(**unsafe.Pointer)(unsafe.Pointer(&ptr)))
-				uptr := *(*unsafe.Pointer)(unsafe.Pointer(&ptr))
+				ptr = e.ptrToPtr(ptr)
+				uptr := e.ptrToUnsafePtr(ptr)
 				if ptr == 0 {
 					e.encodeNull()
 					e.encodeByte(',')
@@ -756,7 +719,7 @@ func (e *Encoder) run(ctx *encodeRuntimeContext, code *opcode) error {
 			if e.unorderedMap {
 				if idx < length {
 					ptr := load(ctxptr, code.mapIter)
-					iter := *(*unsafe.Pointer)(unsafe.Pointer(&ptr))
+					iter := e.ptrToUnsafePtr(ptr)
 					store(ctxptr, code.elemIdx, idx)
 					key := mapiterkey(iter)
 					store(ctxptr, code.next.idx, uintptr(key))
@@ -773,7 +736,7 @@ func (e *Encoder) run(ctx *encodeRuntimeContext, code *opcode) error {
 				*posPtr = append(*posPtr, len(e.buf))
 				if idx < length {
 					ptr := load(ctxptr, code.mapIter)
-					iter := *(*unsafe.Pointer)(unsafe.Pointer(&ptr))
+					iter := e.ptrToUnsafePtr(ptr)
 					store(ctxptr, code.elemIdx, idx)
 					key := mapiterkey(iter)
 					store(ctxptr, code.next.idx, uintptr(key))
@@ -792,7 +755,7 @@ func (e *Encoder) run(ctx *encodeRuntimeContext, code *opcode) error {
 				*posPtr = append(*posPtr, len(e.buf))
 			}
 			ptr := load(ctxptr, code.mapIter)
-			iter := *(*unsafe.Pointer)(unsafe.Pointer(&ptr))
+			iter := e.ptrToUnsafePtr(ptr)
 			value := mapitervalue(iter)
 			store(ctxptr, code.next.idx, uintptr(value))
 			mapiternext(iter)
@@ -806,7 +769,7 @@ func (e *Encoder) run(ctx *encodeRuntimeContext, code *opcode) error {
 			}
 			kvs := make([]mapKV, 0, length)
 			ptr := load(ctxptr, code.mapPos)
-			posPtr := *(*unsafe.Pointer)(unsafe.Pointer(&ptr))
+			posPtr := e.ptrToUnsafePtr(ptr)
 			pos := *(*[]int)(posPtr)
 			for i := 0; i < length; i++ {
 				startKey := pos[i*2]
@@ -845,7 +808,7 @@ func (e *Encoder) run(ctx *encodeRuntimeContext, code *opcode) error {
 				e.encodeBytes([]byte{',', '\n'})
 				code = code.end.next
 			} else {
-				uptr := *(*unsafe.Pointer)(unsafe.Pointer(&ptr))
+				uptr := e.ptrToUnsafePtr(ptr)
 				mlen := maplen(uptr)
 				if mlen > 0 {
 					e.encodeBytes([]byte{'{', '\n'})
@@ -882,8 +845,8 @@ func (e *Encoder) run(ctx *encodeRuntimeContext, code *opcode) error {
 				code = code.end.next
 			} else {
 				// load pointer
-				ptr = uintptr(**(**unsafe.Pointer)(unsafe.Pointer(&ptr)))
-				uptr := *(*unsafe.Pointer)(unsafe.Pointer(&ptr))
+				ptr = e.ptrToPtr(ptr)
+				uptr := e.ptrToUnsafePtr(ptr)
 				if uintptr(uptr) == 0 {
 					e.encodeIndent(code.indent)
 					e.encodeNull()
@@ -928,7 +891,7 @@ func (e *Encoder) run(ctx *encodeRuntimeContext, code *opcode) error {
 					e.encodeIndent(code.indent)
 					store(ctxptr, code.elemIdx, idx)
 					ptr := load(ctxptr, code.mapIter)
-					iter := *(*unsafe.Pointer)(unsafe.Pointer(&ptr))
+					iter := e.ptrToUnsafePtr(ptr)
 					key := mapiterkey(iter)
 					store(ctxptr, code.next.idx, uintptr(key))
 					code = code.next
@@ -945,7 +908,7 @@ func (e *Encoder) run(ctx *encodeRuntimeContext, code *opcode) error {
 				*posPtr = append(*posPtr, len(e.buf))
 				if idx < length {
 					ptr := load(ctxptr, code.mapIter)
-					iter := *(*unsafe.Pointer)(unsafe.Pointer(&ptr))
+					iter := e.ptrToUnsafePtr(ptr)
 					store(ctxptr, code.elemIdx, idx)
 					key := mapiterkey(iter)
 					store(ctxptr, code.next.idx, uintptr(key))
@@ -963,7 +926,7 @@ func (e *Encoder) run(ctx *encodeRuntimeContext, code *opcode) error {
 				*posPtr = append(*posPtr, len(e.buf))
 			}
 			ptr := load(ctxptr, code.mapIter)
-			iter := *(*unsafe.Pointer)(unsafe.Pointer(&ptr))
+			iter := e.ptrToUnsafePtr(ptr)
 			value := mapitervalue(iter)
 			store(ctxptr, code.next.idx, uintptr(value))
 			mapiternext(iter)
@@ -1068,7 +1031,7 @@ func (e *Encoder) run(ctx *encodeRuntimeContext, code *opcode) error {
 			// restore ctxptr
 			offset := load(ctxptr, code.idx)
 			ptr := load(ctxptr, code.elemIdx)
-			code = (*opcode)(*(*unsafe.Pointer)(unsafe.Pointer(&ptr)))
+			code = (*opcode)(e.ptrToUnsafePtr(ptr))
 			ctxptr = ctx.ptr() + offset
 			ptrOffset = offset
 		case opStructFieldPtrHead:
@@ -1823,10 +1786,7 @@ func (e *Encoder) run(ctx *encodeRuntimeContext, code *opcode) error {
 				e.encodeByte('{')
 				e.encodeKey(code)
 				ptr += code.offset
-				v := *(*interface{})(unsafe.Pointer(&interfaceHeader{
-					typ: code.typ,
-					ptr: *(*unsafe.Pointer)(unsafe.Pointer(&ptr)),
-				}))
+				v := e.ptrToInterface(code, ptr)
 				rv := reflect.ValueOf(v)
 				if rv.Type().Kind() == reflect.Interface && rv.IsNil() {
 					e.encodeNull()
@@ -1861,10 +1821,7 @@ func (e *Encoder) run(ctx *encodeRuntimeContext, code *opcode) error {
 			} else {
 				e.encodeKey(code)
 				ptr += code.offset
-				v := *(*interface{})(unsafe.Pointer(&interfaceHeader{
-					typ: code.typ,
-					ptr: *(*unsafe.Pointer)(unsafe.Pointer(&ptr)),
-				}))
+				v := e.ptrToInterface(code, ptr)
 				rv := reflect.ValueOf(v)
 				if rv.Type().Kind() == reflect.Interface && rv.IsNil() {
 					e.encodeNull()
@@ -1909,10 +1866,7 @@ func (e *Encoder) run(ctx *encodeRuntimeContext, code *opcode) error {
 				e.encodeByte('{')
 				e.encodeKey(code)
 				ptr += code.offset
-				v := *(*interface{})(unsafe.Pointer(&interfaceHeader{
-					typ: code.typ,
-					ptr: *(*unsafe.Pointer)(unsafe.Pointer(&ptr)),
-				}))
+				v := e.ptrToInterface(code, ptr)
 				rv := reflect.ValueOf(v)
 				if rv.Type().Kind() == reflect.Interface && rv.IsNil() {
 					e.encodeNull()
@@ -1938,10 +1892,7 @@ func (e *Encoder) run(ctx *encodeRuntimeContext, code *opcode) error {
 			} else {
 				e.encodeKey(code)
 				ptr += code.offset
-				v := *(*interface{})(unsafe.Pointer(&interfaceHeader{
-					typ: code.typ,
-					ptr: *(*unsafe.Pointer)(unsafe.Pointer(&ptr)),
-				}))
+				v := e.ptrToInterface(code, ptr)
 				rv := reflect.ValueOf(v)
 				if rv.Type().Kind() == reflect.Interface && rv.IsNil() {
 					e.encodeNull()
@@ -3041,7 +2992,7 @@ func (e *Encoder) run(ctx *encodeRuntimeContext, code *opcode) error {
 			} else {
 				e.encodeByte('{')
 				ptr += code.offset
-				p := *(*unsafe.Pointer)(unsafe.Pointer(&ptr))
+				p := e.ptrToUnsafePtr(ptr)
 				isPtr := code.typ.Kind() == reflect.Ptr
 				if p == nil || (!isPtr && *(*unsafe.Pointer)(p) == nil) {
 					code = code.nextField
@@ -3086,7 +3037,7 @@ func (e *Encoder) run(ctx *encodeRuntimeContext, code *opcode) error {
 				code = code.end.next
 			} else {
 				ptr += code.offset
-				p := *(*unsafe.Pointer)(unsafe.Pointer(&ptr))
+				p := e.ptrToUnsafePtr(ptr)
 				isPtr := code.typ.Kind() == reflect.Ptr
 				if p == nil || (!isPtr && *(*unsafe.Pointer)(p) == nil) {
 					code = code.nextField
@@ -3134,7 +3085,7 @@ func (e *Encoder) run(ctx *encodeRuntimeContext, code *opcode) error {
 			} else {
 				e.encodeByte('{')
 				ptr += code.offset
-				p := *(*unsafe.Pointer)(unsafe.Pointer(&ptr))
+				p := e.ptrToUnsafePtr(ptr)
 				isPtr := code.typ.Kind() == reflect.Ptr
 				if p == nil || (!isPtr && *(*unsafe.Pointer)(p) == nil) {
 					code = code.nextField
@@ -3165,7 +3116,7 @@ func (e *Encoder) run(ctx *encodeRuntimeContext, code *opcode) error {
 				code = code.end.next
 			} else {
 				ptr += code.offset
-				p := *(*unsafe.Pointer)(unsafe.Pointer(&ptr))
+				p := e.ptrToUnsafePtr(ptr)
 				isPtr := code.typ.Kind() == reflect.Ptr
 				if p == nil || (!isPtr && *(*unsafe.Pointer)(p) == nil) {
 					code = code.nextField
@@ -4237,7 +4188,7 @@ func (e *Encoder) run(ctx *encodeRuntimeContext, code *opcode) error {
 			} else {
 				e.encodeByte('{')
 				ptr += code.offset
-				p := *(*unsafe.Pointer)(unsafe.Pointer(&ptr))
+				p := e.ptrToUnsafePtr(ptr)
 				isPtr := code.typ.Kind() == reflect.Ptr
 				v := *(*interface{})(unsafe.Pointer(&interfaceHeader{typ: code.typ, ptr: p}))
 				b, err := v.(Marshaler).MarshalJSON()
@@ -4280,7 +4231,7 @@ func (e *Encoder) run(ctx *encodeRuntimeContext, code *opcode) error {
 				code = code.end.next
 			} else {
 				ptr += code.offset
-				p := *(*unsafe.Pointer)(unsafe.Pointer(&ptr))
+				p := e.ptrToUnsafePtr(ptr)
 				isPtr := code.typ.Kind() == reflect.Ptr
 				v := *(*interface{})(unsafe.Pointer(&interfaceHeader{typ: code.typ, ptr: p}))
 				b, err := v.(Marshaler).MarshalJSON()
@@ -4327,7 +4278,7 @@ func (e *Encoder) run(ctx *encodeRuntimeContext, code *opcode) error {
 			} else {
 				e.encodeByte('{')
 				ptr += code.offset
-				p := *(*unsafe.Pointer)(unsafe.Pointer(&ptr))
+				p := e.ptrToUnsafePtr(ptr)
 				v := *(*interface{})(unsafe.Pointer(&interfaceHeader{typ: code.typ, ptr: p}))
 				bytes, err := v.(encoding.TextMarshaler).MarshalText()
 				if err != nil {
@@ -4353,7 +4304,7 @@ func (e *Encoder) run(ctx *encodeRuntimeContext, code *opcode) error {
 				code = code.end.next
 			} else {
 				ptr += code.offset
-				p := *(*unsafe.Pointer)(unsafe.Pointer(&ptr))
+				p := e.ptrToUnsafePtr(ptr)
 				v := *(*interface{})(unsafe.Pointer(&interfaceHeader{typ: code.typ, ptr: p}))
 				bytes, err := v.(encoding.TextMarshaler).MarshalText()
 				if err != nil {
@@ -5007,10 +4958,7 @@ func (e *Encoder) run(ctx *encodeRuntimeContext, code *opcode) error {
 			ptr := load(ctxptr, code.headIdx)
 			e.encodeKey(code)
 			p := ptr + code.offset
-			v := *(*interface{})(unsafe.Pointer(&interfaceHeader{
-				typ: code.typ,
-				ptr: *(*unsafe.Pointer)(unsafe.Pointer(&p)),
-			}))
+			v := e.ptrToInterface(code, p)
 			b, err := v.(Marshaler).MarshalJSON()
 			if err != nil {
 				return errMarshaler(code, err)
@@ -5026,10 +4974,7 @@ func (e *Encoder) run(ctx *encodeRuntimeContext, code *opcode) error {
 			ptr := load(ctxptr, code.headIdx)
 			e.encodeKey(code)
 			p := ptr + code.offset
-			v := *(*interface{})(unsafe.Pointer(&interfaceHeader{
-				typ: code.typ,
-				ptr: *(*unsafe.Pointer)(unsafe.Pointer(&p)),
-			}))
+			v := e.ptrToInterface(code, p)
 			bytes, err := v.(encoding.TextMarshaler).MarshalText()
 			if err != nil {
 				return errMarshaler(code, err)
@@ -5211,10 +5156,7 @@ func (e *Encoder) run(ctx *encodeRuntimeContext, code *opcode) error {
 			e.encodeByte(' ')
 			ptr := load(ctxptr, code.headIdx)
 			p := ptr + code.offset
-			v := *(*interface{})(unsafe.Pointer(&interfaceHeader{
-				typ: code.typ,
-				ptr: *(*unsafe.Pointer)(unsafe.Pointer(&p)),
-			}))
+			v := e.ptrToInterface(code, p)
 			b, err := v.(Marshaler).MarshalJSON()
 			if err != nil {
 				return errMarshaler(code, err)
@@ -5232,8 +5174,8 @@ func (e *Encoder) run(ctx *encodeRuntimeContext, code *opcode) error {
 			e.encodeByte(' ')
 			ptr := load(ctxptr, code.headIdx)
 			p := ptr + code.offset
-			header := *(**sliceHeader)(unsafe.Pointer(&p))
-			if p == 0 || uintptr(header.data) == 0 {
+			array := e.ptrToSlice(p)
+			if p == 0 || uintptr(array.data) == 0 {
 				e.encodeNull()
 				e.encodeBytes([]byte{',', '\n'})
 				code = code.nextField
@@ -5246,8 +5188,8 @@ func (e *Encoder) run(ctx *encodeRuntimeContext, code *opcode) error {
 			e.encodeByte(' ')
 			ptr := load(ctxptr, code.headIdx)
 			p := ptr + code.offset
-			header := *(**sliceHeader)(unsafe.Pointer(&p))
-			if p == 0 || uintptr(header.data) == 0 {
+			slice := e.ptrToSlice(p)
+			if p == 0 || uintptr(slice.data) == 0 {
 				e.encodeNull()
 				e.encodeBytes([]byte{',', '\n'})
 				code = code.nextField
@@ -5264,8 +5206,8 @@ func (e *Encoder) run(ctx *encodeRuntimeContext, code *opcode) error {
 				e.encodeNull()
 				code = code.nextField
 			} else {
-				p = uintptr(**(**unsafe.Pointer)(unsafe.Pointer(&p)))
-				mlen := maplen(*(*unsafe.Pointer)(unsafe.Pointer(&p)))
+				p = e.ptrToPtr(p)
+				mlen := maplen(e.ptrToUnsafePtr(p))
 				if mlen == 0 {
 					e.encodeBytes([]byte{'{', '}', ',', '\n'})
 					mapCode := code.next
@@ -5284,8 +5226,8 @@ func (e *Encoder) run(ctx *encodeRuntimeContext, code *opcode) error {
 				e.encodeNull()
 				code = code.nextField
 			} else {
-				p = uintptr(**(**unsafe.Pointer)(unsafe.Pointer(&p)))
-				mlen := maplen(*(*unsafe.Pointer)(unsafe.Pointer(&p)))
+				p = e.ptrToPtr(p)
+				mlen := maplen(e.ptrToUnsafePtr(p))
 				if mlen == 0 {
 					e.encodeBytes([]byte{'{', '}', ',', '\n'})
 					code = code.nextField
@@ -5467,10 +5409,7 @@ func (e *Encoder) run(ctx *encodeRuntimeContext, code *opcode) error {
 		case opStructFieldOmitEmptyMarshalJSON:
 			ptr := load(ctxptr, code.headIdx)
 			p := ptr + code.offset
-			v := *(*interface{})(unsafe.Pointer(&interfaceHeader{
-				typ: code.typ,
-				ptr: *(*unsafe.Pointer)(unsafe.Pointer(&p)),
-			}))
+			v := e.ptrToInterface(code, p)
 			if v != nil {
 				b, err := v.(Marshaler).MarshalJSON()
 				if err != nil {
@@ -5487,15 +5426,8 @@ func (e *Encoder) run(ctx *encodeRuntimeContext, code *opcode) error {
 		case opStructFieldOmitEmptyMarshalText:
 			ptr := load(ctxptr, code.headIdx)
 			p := ptr + code.offset
-			v := *(*interface{})(unsafe.Pointer(&interfaceHeader{
-				typ: code.typ,
-				ptr: *(*unsafe.Pointer)(unsafe.Pointer(&p)),
-			}))
+			v := e.ptrToInterface(code, p)
 			if v != nil {
-				v := *(*interface{})(unsafe.Pointer(&interfaceHeader{
-					typ: code.typ,
-					ptr: *(*unsafe.Pointer)(unsafe.Pointer(&p)),
-				}))
 				bytes, err := v.(encoding.TextMarshaler).MarshalText()
 				if err != nil {
 					return errMarshaler(code, err)
@@ -5507,8 +5439,8 @@ func (e *Encoder) run(ctx *encodeRuntimeContext, code *opcode) error {
 		case opStructFieldOmitEmptyArray:
 			ptr := load(ctxptr, code.headIdx)
 			p := ptr + code.offset
-			header := *(**sliceHeader)(unsafe.Pointer(&p))
-			if p == 0 || uintptr(header.data) == 0 {
+			array := e.ptrToSlice(p)
+			if p == 0 || uintptr(array.data) == 0 {
 				code = code.nextField
 			} else {
 				code = code.next
@@ -5516,8 +5448,8 @@ func (e *Encoder) run(ctx *encodeRuntimeContext, code *opcode) error {
 		case opStructFieldOmitEmptySlice:
 			ptr := load(ctxptr, code.headIdx)
 			p := ptr + code.offset
-			header := *(**sliceHeader)(unsafe.Pointer(&p))
-			if p == 0 || uintptr(header.data) == 0 {
+			slice := e.ptrToSlice(p)
+			if p == 0 || uintptr(slice.data) == 0 {
 				code = code.nextField
 			} else {
 				code = code.next
@@ -5737,8 +5669,8 @@ func (e *Encoder) run(ctx *encodeRuntimeContext, code *opcode) error {
 		case opStructFieldOmitEmptyArrayIndent:
 			ptr := load(ctxptr, code.headIdx)
 			p := ptr + code.offset
-			header := *(**sliceHeader)(unsafe.Pointer(&p))
-			if p == 0 || uintptr(header.data) == 0 {
+			array := e.ptrToSlice(p)
+			if p == 0 || uintptr(array.data) == 0 {
 				code = code.nextField
 			} else {
 				e.encodeIndent(code.indent)
@@ -5749,8 +5681,8 @@ func (e *Encoder) run(ctx *encodeRuntimeContext, code *opcode) error {
 		case opStructFieldOmitEmptySliceIndent:
 			ptr := load(ctxptr, code.headIdx)
 			p := ptr + code.offset
-			header := *(**sliceHeader)(unsafe.Pointer(&p))
-			if p == 0 || uintptr(header.data) == 0 {
+			slice := e.ptrToSlice(p)
+			if p == 0 || uintptr(slice.data) == 0 {
 				code = code.nextField
 			} else {
 				e.encodeIndent(code.indent)
@@ -5918,10 +5850,7 @@ func (e *Encoder) run(ctx *encodeRuntimeContext, code *opcode) error {
 		case opStructFieldStringTagMarshalJSON:
 			ptr := load(ctxptr, code.headIdx)
 			p := ptr + code.offset
-			v := *(*interface{})(unsafe.Pointer(&interfaceHeader{
-				typ: code.typ,
-				ptr: *(*unsafe.Pointer)(unsafe.Pointer(&p)),
-			}))
+			v := e.ptrToInterface(code, p)
 			b, err := v.(Marshaler).MarshalJSON()
 			if err != nil {
 				return errMarshaler(code, err)
@@ -5936,10 +5865,7 @@ func (e *Encoder) run(ctx *encodeRuntimeContext, code *opcode) error {
 		case opStructFieldStringTagMarshalText:
 			ptr := load(ctxptr, code.headIdx)
 			p := ptr + code.offset
-			v := *(*interface{})(unsafe.Pointer(&interfaceHeader{
-				typ: code.typ,
-				ptr: *(*unsafe.Pointer)(unsafe.Pointer(&p)),
-			}))
+			v := e.ptrToInterface(code, p)
 			bytes, err := v.(encoding.TextMarshaler).MarshalText()
 			if err != nil {
 				return errMarshaler(code, err)
@@ -6097,10 +6023,7 @@ func (e *Encoder) run(ctx *encodeRuntimeContext, code *opcode) error {
 			e.encodeKey(code)
 			e.encodeByte(' ')
 			p := ptr + code.offset
-			v := *(*interface{})(unsafe.Pointer(&interfaceHeader{
-				typ: code.typ,
-				ptr: *(*unsafe.Pointer)(unsafe.Pointer(&p)),
-			}))
+			v := e.ptrToInterface(code, p)
 			b, err := v.(Marshaler).MarshalJSON()
 			if err != nil {
 				return errMarshaler(code, err)
@@ -6118,10 +6041,7 @@ func (e *Encoder) run(ctx *encodeRuntimeContext, code *opcode) error {
 			e.encodeKey(code)
 			e.encodeByte(' ')
 			p := ptr + code.offset
-			v := *(*interface{})(unsafe.Pointer(&interfaceHeader{
-				typ: code.typ,
-				ptr: *(*unsafe.Pointer)(unsafe.Pointer(&p)),
-			}))
+			v := e.ptrToInterface(code, p)
 			bytes, err := v.(encoding.TextMarshaler).MarshalText()
 			if err != nil {
 				return errMarshaler(code, err)
@@ -6159,20 +6079,32 @@ END:
 	return nil
 }
 
-func (e *Encoder) ptrToPtr(p uintptr) uintptr     { return **(**uintptr)(unsafe.Pointer(&p)) }
-func (e *Encoder) ptrToInt(p uintptr) int         { return **(**int)(unsafe.Pointer(&p)) }
-func (e *Encoder) ptrToInt8(p uintptr) int8       { return **(**int8)(unsafe.Pointer(&p)) }
-func (e *Encoder) ptrToInt16(p uintptr) int16     { return **(**int16)(unsafe.Pointer(&p)) }
-func (e *Encoder) ptrToInt32(p uintptr) int32     { return **(**int32)(unsafe.Pointer(&p)) }
-func (e *Encoder) ptrToInt64(p uintptr) int64     { return **(**int64)(unsafe.Pointer(&p)) }
-func (e *Encoder) ptrToUint(p uintptr) uint       { return **(**uint)(unsafe.Pointer(&p)) }
-func (e *Encoder) ptrToUint8(p uintptr) uint8     { return **(**uint8)(unsafe.Pointer(&p)) }
-func (e *Encoder) ptrToUint16(p uintptr) uint16   { return **(**uint16)(unsafe.Pointer(&p)) }
-func (e *Encoder) ptrToUint32(p uintptr) uint32   { return **(**uint32)(unsafe.Pointer(&p)) }
-func (e *Encoder) ptrToUint64(p uintptr) uint64   { return **(**uint64)(unsafe.Pointer(&p)) }
-func (e *Encoder) ptrToFloat32(p uintptr) float32 { return **(**float32)(unsafe.Pointer(&p)) }
-func (e *Encoder) ptrToFloat64(p uintptr) float64 { return **(**float64)(unsafe.Pointer(&p)) }
-func (e *Encoder) ptrToBool(p uintptr) bool       { return **(**bool)(unsafe.Pointer(&p)) }
-func (e *Encoder) ptrToByte(p uintptr) byte       { return **(**byte)(unsafe.Pointer(&p)) }
-func (e *Encoder) ptrToBytes(p uintptr) []byte    { return **(**[]byte)(unsafe.Pointer(&p)) }
-func (e *Encoder) ptrToString(p uintptr) string   { return **(**string)(unsafe.Pointer(&p)) }
+func (e *Encoder) ptrToInt(p uintptr) int            { return **(**int)(unsafe.Pointer(&p)) }
+func (e *Encoder) ptrToInt8(p uintptr) int8          { return **(**int8)(unsafe.Pointer(&p)) }
+func (e *Encoder) ptrToInt16(p uintptr) int16        { return **(**int16)(unsafe.Pointer(&p)) }
+func (e *Encoder) ptrToInt32(p uintptr) int32        { return **(**int32)(unsafe.Pointer(&p)) }
+func (e *Encoder) ptrToInt64(p uintptr) int64        { return **(**int64)(unsafe.Pointer(&p)) }
+func (e *Encoder) ptrToUint(p uintptr) uint          { return **(**uint)(unsafe.Pointer(&p)) }
+func (e *Encoder) ptrToUint8(p uintptr) uint8        { return **(**uint8)(unsafe.Pointer(&p)) }
+func (e *Encoder) ptrToUint16(p uintptr) uint16      { return **(**uint16)(unsafe.Pointer(&p)) }
+func (e *Encoder) ptrToUint32(p uintptr) uint32      { return **(**uint32)(unsafe.Pointer(&p)) }
+func (e *Encoder) ptrToUint64(p uintptr) uint64      { return **(**uint64)(unsafe.Pointer(&p)) }
+func (e *Encoder) ptrToFloat32(p uintptr) float32    { return **(**float32)(unsafe.Pointer(&p)) }
+func (e *Encoder) ptrToFloat64(p uintptr) float64    { return **(**float64)(unsafe.Pointer(&p)) }
+func (e *Encoder) ptrToBool(p uintptr) bool          { return **(**bool)(unsafe.Pointer(&p)) }
+func (e *Encoder) ptrToByte(p uintptr) byte          { return **(**byte)(unsafe.Pointer(&p)) }
+func (e *Encoder) ptrToBytes(p uintptr) []byte       { return **(**[]byte)(unsafe.Pointer(&p)) }
+func (e *Encoder) ptrToString(p uintptr) string      { return **(**string)(unsafe.Pointer(&p)) }
+func (e *Encoder) ptrToSlice(p uintptr) *sliceHeader { return *(**sliceHeader)(unsafe.Pointer(&p)) }
+func (e *Encoder) ptrToPtr(p uintptr) uintptr {
+	return uintptr(**(**unsafe.Pointer)(unsafe.Pointer(&p)))
+}
+func (e *Encoder) ptrToUnsafePtr(p uintptr) unsafe.Pointer {
+	return *(*unsafe.Pointer)(unsafe.Pointer(&p))
+}
+func (e *Encoder) ptrToInterface(code *opcode, p uintptr) interface{} {
+	return *(*interface{})(unsafe.Pointer(&interfaceHeader{
+		typ: code.typ,
+		ptr: *(*unsafe.Pointer)(unsafe.Pointer(&p)),
+	}))
+}