Replace vm and escaped vm codes with internal package

docker-compose.yml

@@ -7,7 +7,7 @@ services:
     deploy:
       resources:
         limits:
-          memory: 2048M
+          memory: 1200M
     working_dir: /go/src/go-json
     command: |
       sh -c "go test -c . && ls go-json.test"

encode.go

@@ -15,6 +15,7 @@ import (
 
 	"github.com/goccy/go-json/internal/encoder"
 	"github.com/goccy/go-json/internal/encoder/vm"
+	"github.com/goccy/go-json/internal/encoder/vm_escaped"
 )
 
 // An Encoder writes JSON values to an output stream.
@@ -48,6 +49,15 @@ var (
 			}
 		},
 	}
+	encRuntimeContextPool2 = sync.Pool{
+		New: func() interface{} {
+			return &encoder.RuntimeContext{
+				Buf:      make([]byte, 0, bufSize),
+				Ptrs:     make([]uintptr, 128),
+				KeepRefs: make([]unsafe.Pointer, 0, 8),
+			}
+		},
+	}
 )
 
 func takeEncodeRuntimeContext() *encodeRuntimeContext {
@@ -58,6 +68,14 @@ func releaseEncodeRuntimeContext(ctx *encodeRuntimeContext) {
 	encRuntimeContextPool.Put(ctx)
 }
 
+func takeEncodeRuntimeContext2() *encoder.RuntimeContext {
+	return encRuntimeContextPool2.Get().(*encoder.RuntimeContext)
+}
+
+func releaseEncodeRuntimeContext2(ctx *encoder.RuntimeContext) {
+	encRuntimeContextPool2.Put(ctx)
+}
+
 // NewEncoder returns a new encoder that writes to w.
 func NewEncoder(w io.Writer) *Encoder {
 	return &Encoder{w: w, enabledHTMLEscape: true}
@@ -95,7 +113,9 @@ func (e *Encoder) encodeWithOption(ctx *encodeRuntimeContext, v interface{}, opt
 	if e.enabledIndent {
 		buf, err = encodeIndent(ctx, v, e.prefix, e.indentStr, opt)
 	} else {
+		ctx := takeEncodeRuntimeContext2()
 		buf, err = encode(ctx, v, opt)
+		releaseEncodeRuntimeContext2(ctx)
 	}
 	if err != nil {
 		return err
@@ -133,11 +153,11 @@ func (e *Encoder) SetIndent(prefix, indent string) {
 }
 
 func marshal(v interface{}, opt EncodeOption) ([]byte, error) {
-	ctx := takeEncodeRuntimeContext()
+	ctx := takeEncodeRuntimeContext2()
 
 	buf, err := encode(ctx, v, opt|EncodeOptionHTMLEscape)
 	if err != nil {
-		releaseEncodeRuntimeContext(ctx)
+		releaseEncodeRuntimeContext2(ctx)
 		return nil, err
 	}
 
@@ -149,16 +169,16 @@ func marshal(v interface{}, opt EncodeOption) ([]byte, error) {
 	copied := make([]byte, len(buf))
 	copy(copied, buf)
 
-	releaseEncodeRuntimeContext(ctx)
+	releaseEncodeRuntimeContext2(ctx)
 	return copied, nil
 }
 
 func marshalNoEscape(v interface{}, opt EncodeOption) ([]byte, error) {
-	ctx := takeEncodeRuntimeContext()
+	ctx := takeEncodeRuntimeContext2()
 
 	buf, err := encodeNoEscape(ctx, v, opt|EncodeOptionHTMLEscape)
 	if err != nil {
-		releaseEncodeRuntimeContext(ctx)
+		releaseEncodeRuntimeContext2(ctx)
 		return nil, err
 	}
 
@@ -170,7 +190,7 @@ func marshalNoEscape(v interface{}, opt EncodeOption) ([]byte, error) {
 	copied := make([]byte, len(buf))
 	copy(copied, buf)
 
-	releaseEncodeRuntimeContext(ctx)
+	releaseEncodeRuntimeContext2(ctx)
 	return copied, nil
 }
 
@@ -191,8 +211,8 @@ func marshalIndent(v interface{}, prefix, indent string, opt EncodeOption) ([]by
 	return copied, nil
 }
 
-func encode(ctx *encodeRuntimeContext, v interface{}, opt EncodeOption) ([]byte, error) {
+func encode(ctx *encoder.RuntimeContext, v interface{}, opt EncodeOption) ([]byte, error) {
-	b := ctx.buf[:0]
+	b := ctx.Buf[:0]
 	if v == nil {
 		b = encodeNull(b)
 		b = encodeComma(b)
@@ -202,40 +222,25 @@ func encode(ctx *encodeRuntimeContext, v interface{}, opt EncodeOption) ([]byte,
 	typ := header.typ
 
 	typeptr := uintptr(unsafe.Pointer(typ))
-	codeSet, err := encodeCompileToGetCodeSet(typeptr)
+	codeSet, err := encoder.CompileToGetCodeSet(typeptr)
 	if err != nil {
 		return nil, err
 	}
 
 	p := uintptr(header.ptr)
-	ctx.init(p, codeSet.codeLength)
+	ctx.Init(p, codeSet.CodeLength)
-	ctx.keepRefs = append(ctx.keepRefs, header.ptr)
+	ctx.KeepRefs = append(ctx.KeepRefs, header.ptr)
 
-	if (opt & EncodeOptionHTMLEscape) != 0 {
+	buf, err := encodeRunCode(ctx, b, codeSet, opt)
-		buf, err := encodeRunCode(ctx, b, codeSet, opt)
+	if err != nil {
-		if err != nil {
+		return nil, err
-			return nil, err
-		}
-		ctx.buf = buf
-		return buf, nil
-	} else {
-		codeSet, err := encoder.CompileToGetCodeSet(typeptr)
-		if err != nil {
-			return nil, err
-		}
-		ctx := &encoder.RuntimeContext{}
-		ctx.Init(p, codeSet.CodeLength)
-		buf, err := vm.Run(ctx, b, codeSet, encoder.Option(opt))
-		if err != nil {
-			return nil, err
-		}
-		ctx.Buf = buf
-		return buf, nil
 	}
+	ctx.Buf = buf
+	return buf, nil
 }
 
-func encodeNoEscape(ctx *encodeRuntimeContext, v interface{}, opt EncodeOption) ([]byte, error) {
+func encodeNoEscape(ctx *encoder.RuntimeContext, v interface{}, opt EncodeOption) ([]byte, error) {
-	b := ctx.buf[:0]
+	b := ctx.Buf[:0]
 	if v == nil {
 		b = encodeNull(b)
 		b = encodeComma(b)
@@ -245,19 +250,19 @@ func encodeNoEscape(ctx *encodeRuntimeContext, v interface{}, opt EncodeOption)
 	typ := header.typ
 
 	typeptr := uintptr(unsafe.Pointer(typ))
-	codeSet, err := encodeCompileToGetCodeSet(typeptr)
+	codeSet, err := encoder.CompileToGetCodeSet(typeptr)
 	if err != nil {
 		return nil, err
 	}
 
 	p := uintptr(header.ptr)
-	ctx.init(p, codeSet.codeLength)
+	ctx.Init(p, codeSet.CodeLength)
 	buf, err := encodeRunCode(ctx, b, codeSet, opt)
 	if err != nil {
 		return nil, err
 	}
 
-	ctx.buf = buf
+	ctx.Buf = buf
 	return buf, nil
 }
 
@@ -291,11 +296,11 @@ func encodeIndent(ctx *encodeRuntimeContext, v interface{}, prefix, indent strin
 	return buf, nil
 }
 
-func encodeRunCode(ctx *encodeRuntimeContext, b []byte, codeSet *opcodeSet, opt EncodeOption) ([]byte, error) {
+func encodeRunCode(ctx *encoder.RuntimeContext, b []byte, codeSet *encoder.OpcodeSet, opt EncodeOption) ([]byte, error) {
 	if (opt & EncodeOptionHTMLEscape) != 0 {
-		return encodeRunEscaped(ctx, b, codeSet, opt)
+		return vm_escaped.Run(ctx, b, codeSet, encoder.Option(opt))
 	}
-	return encodeRun(ctx, b, codeSet, opt)
+	return vm.Run(ctx, b, codeSet, encoder.Option(opt))
 }
 
 func encodeRunIndentCode(ctx *encodeRuntimeContext, b []byte, codeSet *opcodeSet, prefix, indent string, opt EncodeOption) ([]byte, error) {

internal/encoder/compiler_race.go

@@ -11,7 +11,7 @@ import (
 
 var setsMu sync.RWMutex
 
-func CompileToGetCodeSet(typeptr uintptr) (*opcodeSet, error) {
+func CompileToGetCodeSet(typeptr uintptr) (*OpcodeSet, error) {
 	if typeptr > typeAddr.MaxTypeAddr {
 		return compileToGetCodeSetSlowPath(typeptr)
 	}

internal/encoder/encoder.go

@@ -476,3 +476,14 @@ func AppendComma(b []byte) []byte {
 func AppendStructEnd(b []byte) []byte {
 	return append(b, '}', ',')
 }
+
+func IsNilForMarshaler(v interface{}) bool {
+	rv := reflect.ValueOf(v)
+	switch rv.Kind() {
+	case reflect.Interface, reflect.Map, reflect.Ptr:
+		return rv.IsNil()
+	case reflect.Slice:
+		return rv.IsNil() || rv.Len() == 0
+	}
+	return false
+}

internal/encoder/vm/vm.go

@@ -269,14 +269,14 @@ func Run(ctx *encoder.RuntimeContext, b []byte, codeSet *encoder.OpcodeSet, opt
 			b = bb
 			code = code.Next
 		case encoder.OpMarshalJSONPtr:
-			p := loadNPtr(ctxptr, code.Idx, code.PtrNum)
+			p := load(ctxptr, code.Idx)
 			if p == 0 {
 				b = appendNull(b)
 				b = appendComma(b)
 				code = code.Next
 				break
 			}
-			store(ctxptr, code.Idx, p)
+			store(ctxptr, code.Idx, ptrToPtr(p))
 			fallthrough
 		case encoder.OpMarshalJSON:
 			p := load(ctxptr, code.Idx)
@@ -293,14 +293,14 @@ func Run(ctx *encoder.RuntimeContext, b []byte, codeSet *encoder.OpcodeSet, opt
 			b = appendComma(bb)
 			code = code.Next
 		case encoder.OpMarshalTextPtr:
-			p := loadNPtr(ctxptr, code.Idx, code.PtrNum)
+			p := load(ctxptr, code.Idx)
 			if p == 0 {
 				b = appendNull(b)
 				b = appendComma(b)
 				code = code.Next
 				break
 			}
-			store(ctxptr, code.Idx, p)
+			store(ctxptr, code.Idx, ptrToPtr(p))
 			fallthrough
 		case encoder.OpMarshalText:
 			p := load(ctxptr, code.Idx)
@@ -337,6 +337,7 @@ func Run(ctx *encoder.RuntimeContext, b []byte, codeSet *encoder.OpcodeSet, opt
 			}
 			store(ctxptr, code.ElemIdx, 0)
 			store(ctxptr, code.Length, uintptr(slice.Len))
+			store(ctxptr, code.Idx, uintptr(slice.Data))
 			if slice.Len > 0 {
 				b = append(b, '[')
 				code = code.Next
@@ -2815,11 +2816,12 @@ func Run(ctx *encoder.RuntimeContext, b []byte, codeSet *encoder.OpcodeSet, opt
 					p = ptrToPtr(p + code.Offset)
 				}
 			}
-			if p == 0 && code.Nilcheck {
+			iface := ptrToInterface(code, p)
+			if code.Nilcheck && encoder.IsNilForMarshaler(iface) {
 				code = code.NextField
 			} else {
 				b = append(b, code.Key...)
-				bb, err := appendMarshalJSON(code, b, ptrToInterface(code, p), false)
+				bb, err := appendMarshalJSON(code, b, iface, false)
 				if err != nil {
 					return nil, err
 				}