Add nilcheck property

cover_marshal_json_test.go

@@ -609,123 +609,228 @@ func TestCoverMarshalJSON(t *testing.T) {
 			}{A: nil, B: nil, C: nil},
 		},
 
+		// PtrHeadMarshalJSONZeroMultiFields
+		{
+			name: "PtrHeadMarshalJSONZeroMultiFields",
+			data: &struct {
+				A coverMarshalJSON `json:"a"`
+				B coverMarshalJSON `json:"b"`
+			}{},
+		},
+		{
+			name: "PtrHeadMarshalJSONZeroMultiFieldsOmitEmpty",
+			data: &struct {
+				A coverMarshalJSON `json:"a,omitempty"`
+				B coverMarshalJSON `json:"b,omitempty"`
+			}{},
+		},
+		{
+			name: "PtrHeadMarshalJSONZeroMultiFieldsString",
+			data: &struct {
+				A coverMarshalJSON `json:"a,string"`
+				B coverMarshalJSON `json:"b,string"`
+			}{},
+		},
+		{
+			name: "PtrHeadPtrMarshalJSONZeroMultiFields",
+			data: &struct {
+				A coverPtrMarshalJSON `json:"a"`
+				B coverPtrMarshalJSON `json:"b"`
+			}{},
+		},
+		{
+			name: "PtrHeadPtrMarshalJSONZeroMultiFieldsOmitEmpty",
+			data: &struct {
+				A coverPtrMarshalJSON `json:"a,omitempty"`
+				B coverPtrMarshalJSON `json:"b,omitempty"`
+			}{},
+		},
+		{
+			name: "PtrHeadPtrMarshalJSONZeroMultiFieldsString",
+			data: &struct {
+				A coverPtrMarshalJSON `json:"a,string"`
+				B coverPtrMarshalJSON `json:"b,string"`
+			}{},
+		},
+
+		// PtrHeadMarshalJSONMultiFields
+		{
+			name: "PtrHeadMarshalJSONMultiFields",
+			data: &struct {
+				A coverMarshalJSON `json:"a"`
+				B coverMarshalJSON `json:"b"`
+			}{A: coverMarshalJSON{}, B: coverMarshalJSON{}},
+		},
+		{
+			name: "PtrHeadMarshalJSONMultiFieldsOmitEmpty",
+			data: &struct {
+				A coverMarshalJSON `json:"a,omitempty"`
+				B coverMarshalJSON `json:"b,omitempty"`
+			}{A: coverMarshalJSON{}, B: coverMarshalJSON{}},
+		},
+		{
+			name: "PtrHeadMarshalJSONMultiFieldsString",
+			data: &struct {
+				A coverMarshalJSON `json:"a,string"`
+				B coverMarshalJSON `json:"b,string"`
+			}{A: coverMarshalJSON{}, B: coverMarshalJSON{}},
+		},
+		{
+			name: "PtrHeadPtrMarshalJSONMultiFields",
+			data: &struct {
+				A coverPtrMarshalJSON `json:"a"`
+				B coverPtrMarshalJSON `json:"b"`
+			}{A: coverPtrMarshalJSON{}, B: coverPtrMarshalJSON{}},
+		},
+		{
+			name: "PtrHeadPtrMarshalJSONMultiFieldsOmitEmpty",
+			data: &struct {
+				A coverPtrMarshalJSON `json:"a,omitempty"`
+				B coverPtrMarshalJSON `json:"b,omitempty"`
+			}{A: coverPtrMarshalJSON{}, B: coverPtrMarshalJSON{}},
+		},
+		{
+			name: "PtrHeadPtrMarshalJSONMultiFieldsString",
+			data: &struct {
+				A coverPtrMarshalJSON `json:"a,string"`
+				B coverPtrMarshalJSON `json:"b,string"`
+			}{A: coverPtrMarshalJSON{}, B: coverPtrMarshalJSON{}},
+		},
+
+		// PtrHeadMarshalJSONPtrMultiFields
+		{
+			name: "PtrHeadMarshalJSONPtrMultiFields",
+			data: &struct {
+				A *coverMarshalJSON `json:"a"`
+				B *coverMarshalJSON `json:"b"`
+			}{A: &coverMarshalJSON{}, B: &coverMarshalJSON{}},
+		},
+		{
+			name: "PtrHeadMarshalJSONPtrMultiFieldsOmitEmpty",
+			data: &struct {
+				A *coverMarshalJSON `json:"a,omitempty"`
+				B *coverMarshalJSON `json:"b,omitempty"`
+			}{A: &coverMarshalJSON{}, B: &coverMarshalJSON{}},
+		},
+		{
+			name: "PtrHeadMarshalJSONPtrMultiFieldsString",
+			data: &struct {
+				A *coverMarshalJSON `json:"a,string"`
+				B *coverMarshalJSON `json:"b,string"`
+			}{A: &coverMarshalJSON{}, B: &coverMarshalJSON{}},
+		},
+		{
+			name: "PtrHeadPtrMarshalJSONPtrMultiFields",
+			data: &struct {
+				A *coverPtrMarshalJSON `json:"a"`
+				B *coverPtrMarshalJSON `json:"b"`
+			}{A: &coverPtrMarshalJSON{}, B: &coverPtrMarshalJSON{}},
+		},
+		{
+			name: "PtrHeadPtrMarshalJSONPtrMultiFieldsOmitEmpty",
+			data: &struct {
+				A *coverPtrMarshalJSON `json:"a,omitempty"`
+				B *coverPtrMarshalJSON `json:"b,omitempty"`
+			}{A: &coverPtrMarshalJSON{}, B: &coverPtrMarshalJSON{}},
+		},
+		{
+			name: "PtrHeadPtrMarshalJSONPtrMultiFieldsString",
+			data: &struct {
+				A *coverPtrMarshalJSON `json:"a,string"`
+				B *coverPtrMarshalJSON `json:"b,string"`
+			}{A: &coverPtrMarshalJSON{}, B: &coverPtrMarshalJSON{}},
+		},
+
+		// PtrHeadMarshalJSONPtrNilMultiFields
+		{
+			name: "PtrHeadMarshalJSONPtrNilMultiFields",
+			data: &struct {
+				A *coverMarshalJSON `json:"a"`
+				B *coverMarshalJSON `json:"b"`
+			}{A: nil, B: nil},
+		},
+		{
+			name: "PtrHeadMarshalJSONPtrNilMultiFieldsOmitEmpty",
+			data: &struct {
+				A *coverMarshalJSON `json:"a,omitempty"`
+				B *coverMarshalJSON `json:"b,omitempty"`
+			}{A: nil, B: nil},
+		},
+		{
+			name: "PtrHeadMarshalJSONPtrNilMultiFieldsString",
+			data: &struct {
+				A *coverMarshalJSON `json:"a,string"`
+				B *coverMarshalJSON `json:"b,string"`
+			}{A: nil, B: nil},
+		},
+		{
+			name: "PtrHeadPtrMarshalJSONPtrNilMultiFields",
+			data: &struct {
+				A *coverPtrMarshalJSON `json:"a"`
+				B *coverPtrMarshalJSON `json:"b"`
+			}{A: nil, B: nil},
+		},
+		{
+			name: "PtrHeadPtrMarshalJSONPtrNilMultiFieldsOmitEmpty",
+			data: &struct {
+				A *coverPtrMarshalJSON `json:"a,omitempty"`
+				B *coverPtrMarshalJSON `json:"b,omitempty"`
+			}{A: nil, B: nil},
+		},
+		{
+			name: "PtrHeadPtrMarshalJSONPtrNilMultiFieldsString",
+			data: &struct {
+				A *coverPtrMarshalJSON `json:"a,string"`
+				B *coverPtrMarshalJSON `json:"b,string"`
+			}{A: nil, B: nil},
+		},
+
+		// PtrHeadMarshalJSONNilMultiFields
+		{
+			name: "PtrHeadMarshalJSONNilMultiFields",
+			data: (*struct {
+				A coverMarshalJSON `json:"a"`
+				B coverMarshalJSON `json:"b"`
+			})(nil),
+		},
+		{
+			name: "PtrHeadMarshalJSONNilMultiFieldsOmitEmpty",
+			data: (*struct {
+				A coverMarshalJSON `json:"a,omitempty"`
+				B coverMarshalJSON `json:"b,omitempty"`
+			})(nil),
+		},
+		{
+			name: "PtrHeadMarshalJSONNilMultiFieldsString",
+			data: (*struct {
+				A coverMarshalJSON `json:"a,string"`
+				B coverMarshalJSON `json:"b,string"`
+			})(nil),
+		},
+		{
+			name: "PtrHeadPtrMarshalJSONNilMultiFields",
+			data: (*struct {
+				A coverPtrMarshalJSON `json:"a"`
+				B coverPtrMarshalJSON `json:"b"`
+			})(nil),
+		},
+		{
+			name: "PtrHeadPtrMarshalJSONNilMultiFieldsOmitEmpty",
+			data: (*struct {
+				A coverPtrMarshalJSON `json:"a,omitempty"`
+				B coverPtrMarshalJSON `json:"b,omitempty"`
+			})(nil),
+		},
+		{
+			name: "PtrHeadPtrMarshalJSONNilMultiFieldsString",
+			data: (*struct {
+				A coverPtrMarshalJSON `json:"a,string"`
+				B coverPtrMarshalJSON `json:"b,string"`
+			})(nil),
+		},
+
 		/*
 
-			// PtrHeadMarshalJSONZeroMultiFields
-			{
-				name: "PtrHeadMarshalJSONZeroMultiFields",
-				data: &struct {
-					A [2]int `json:"a"`
-					B [2]int `json:"b"`
-				}{},
-			},
-			{
-				name: "PtrHeadMarshalJSONZeroMultiFieldsOmitEmpty",
-				data: &struct {
-					A [2]int `json:"a,omitempty"`
-					B [2]int `json:"b,omitempty"`
-				}{},
-			},
-			{
-				name: "PtrHeadMarshalJSONZeroMultiFieldsString",
-				data: &struct {
-					A [2]int `json:"a,string"`
-					B [2]int `json:"b,string"`
-				}{},
-			},
-
-			// PtrHeadMarshalJSONMultiFields
-			{
-				name: "PtrHeadMarshalJSONMultiFields",
-				data: &struct {
-					A [2]int `json:"a"`
-					B [2]int `json:"b"`
-				}{A: [2]int{-1}, B: [2]int{1}},
-			},
-			{
-				name: "PtrHeadMarshalJSONMultiFieldsOmitEmpty",
-				data: &struct {
-					A [2]int `json:"a,omitempty"`
-					B [2]int `json:"b,omitempty"`
-				}{A: [2]int{-1}, B: [2]int{1}},
-			},
-			{
-				name: "PtrHeadMarshalJSONMultiFieldsString",
-				data: &struct {
-					A [2]int `json:"a,string"`
-					B [2]int `json:"b,string"`
-				}{A: [2]int{-1}, B: [2]int{1}},
-			},
-
-			// PtrHeadMarshalJSONPtrMultiFields
-			{
-				name: "PtrHeadMarshalJSONPtrMultiFields",
-				data: &struct {
-					A *[2]int `json:"a"`
-					B *[2]int `json:"b"`
-				}{A: arrayptr([2]int{-1}), B: arrayptr([2]int{-2})},
-			},
-			{
-				name: "PtrHeadMarshalJSONPtrMultiFieldsOmitEmpty",
-				data: &struct {
-					A *[2]int `json:"a,omitempty"`
-					B *[2]int `json:"b,omitempty"`
-				}{A: arrayptr([2]int{-1}), B: arrayptr([2]int{-2})},
-			},
-			{
-				name: "PtrHeadMarshalJSONPtrMultiFieldsString",
-				data: &struct {
-					A *[2]int `json:"a,string"`
-					B *[2]int `json:"b,string"`
-				}{A: arrayptr([2]int{-1}), B: arrayptr([2]int{-2})},
-			},
-
-			// PtrHeadMarshalJSONPtrNilMultiFields
-			{
-				name: "PtrHeadMarshalJSONPtrNilMultiFields",
-				data: &struct {
-					A *[2]int `json:"a"`
-					B *[2]int `json:"b"`
-				}{A: nil, B: nil},
-			},
-			{
-				name: "PtrHeadMarshalJSONPtrNilMultiFieldsOmitEmpty",
-				data: &struct {
-					A *[2]int `json:"a,omitempty"`
-					B *[2]int `json:"b,omitempty"`
-				}{A: nil, B: nil},
-			},
-			{
-				name: "PtrHeadMarshalJSONPtrNilMultiFieldsString",
-				data: &struct {
-					A *[2]int `json:"a,string"`
-					B *[2]int `json:"b,string"`
-				}{A: nil, B: nil},
-			},
-
-			// PtrHeadMarshalJSONNilMultiFields
-			{
-				name: "PtrHeadMarshalJSONNilMultiFields",
-				data: (*struct {
-					A [2]int `json:"a"`
-					B [2]int `json:"b"`
-				})(nil),
-			},
-			{
-				name: "PtrHeadMarshalJSONNilMultiFieldsOmitEmpty",
-				data: (*struct {
-					A [2]int `json:"a,omitempty"`
-					B [2]int `json:"b,omitempty"`
-				})(nil),
-			},
-			{
-				name: "PtrHeadMarshalJSONNilMultiFieldsString",
-				data: (*struct {
-					A [2]int `json:"a,string"`
-					B [2]int `json:"b,string"`
-				})(nil),
-			},
-
 			// PtrHeadMarshalJSONNilMultiFields
 			{
 				name: "PtrHeadMarshalJSONNilMultiFields",

encode_compile.go

@@ -1231,6 +1231,7 @@ func encodeCompileStruct(ctx *encodeCompileContext, isPtr bool) (*opcode, error)
 	fieldNum := typ.NumField()
 	indirect := ifaceIndir(typ)
 	fieldIdx := 0
+	disableIndirectConversion := false
 	var (
 		head      *opcode
 		code      *opcode
@@ -1263,6 +1264,7 @@ func encodeCompileStruct(ctx *encodeCompileContext, isPtr bool) (*opcode, error)
 		fieldOpcodeIndex := ctx.opcodeIndex
 		fieldPtrIndex := ctx.ptrIndex
 		ctx.incIndex()
+		nilcheck := indirect
 		var valueCode *opcode
 		if i == 0 && fieldNum == 1 && isPtr && rtype_ptrTo(fieldType).Implements(marshalJSONType) && !fieldType.Implements(marshalJSONType) {
 			// *struct{ field implementedMarshalJSONType } => struct { field *implementedMarshalJSONType }
@@ -1273,8 +1275,17 @@ func encodeCompileStruct(ctx *encodeCompileContext, isPtr bool) (*opcode, error)
 				return nil, err
 			}
 			valueCode = code
+			nilcheck = false
 			indirect = false
-			isPtr = false
+			disableIndirectConversion = true
+		} else if isPtr && fieldNum > 1 && fieldType.Kind() != reflect.Ptr && !fieldType.Implements(marshalJSONType) && rtype_ptrTo(fieldType).Implements(marshalJSONType) {
+			ctx.typ = rtype_ptrTo(fieldType)
+			code, err := encodeCompileMarshalJSON(ctx)
+			if err != nil {
+				return nil, err
+			}
+			nilcheck = false
+			valueCode = code
 		} else {
 			code, err := encodeCompile(ctx.withType(fieldType), i == 0 && isPtr)
 			if err != nil {
@@ -1301,6 +1312,7 @@ func encodeCompileStruct(ctx *encodeCompileContext, isPtr bool) (*opcode, error)
 		key := fmt.Sprintf(`"%s":`, tag.key)
 		escapedKey := fmt.Sprintf(`%s:`, string(encodeEscapedString([]byte{}, tag.key)))
 		valueCode.indirect = indirect
+		valueCode.nilcheck = nilcheck
 		fieldCode := &opcode{
 			typ:          valueCode.typ,
 			displayIdx:   fieldOpcodeIndex,
@@ -1314,6 +1326,7 @@ func encodeCompileStruct(ctx *encodeCompileContext, isPtr bool) (*opcode, error)
 			displayKey:   tag.key,
 			offset:       field.Offset,
 			indirect:     indirect,
+			nilcheck:     nilcheck,
 		}
 		if fieldIdx == 0 {
 			fieldCode.headIdx = fieldCode.idx
@@ -1373,8 +1386,8 @@ func encodeCompileStruct(ctx *encodeCompileContext, isPtr bool) (*opcode, error)
 
 	delete(ctx.structTypeToCompiledCode, typeptr)
 
-	if !code.indirect && isPtr {
+	if !disableIndirectConversion && !head.indirect && isPtr {
-		code.indirect = true
+		head.indirect = true
 	}
 
 	return ret, nil

encode_opcode.go

@@ -20,6 +20,7 @@ type opcode struct {
 	anonymousKey bool   // whether anonymous key
 	root         bool   // whether root
 	indirect     bool   // whether indirect or not
+	nilcheck     bool   // whether needs to nilcheck or not
 	rshiftNum    uint8  // use to take bit for judging whether negative integer or not
 	mask         uint64 // mask for number
 	indent       int    // indent number
@@ -93,6 +94,7 @@ func (c *opcode) copy(codeMap map[uintptr]*opcode) *opcode {
 		anonymousKey: c.anonymousKey,
 		root:         c.root,
 		indirect:     c.indirect,
+		nilcheck:     c.nilcheck,
 		indent:       c.indent,
 		idx:          c.idx,
 		headIdx:      c.headIdx,

encode_vm.go

@@ -3234,7 +3234,7 @@ func encodeRun(ctx *encodeRuntimeContext, b []byte, codeSet *opcodeSet, opt Enco
 			}
 			b = append(b, '{')
 			b = append(b, code.key...)
-			if p == 0 || code.indirect && code.typ.Kind() == reflect.Ptr && ptrToPtr(p) == 0 {
+			if p == 0 || code.nilcheck && code.typ.Kind() == reflect.Ptr && ptrToPtr(p) == 0 {
 				b = encodeNull(b)
 			} else {
 				bb, err := encodeMarshalJSON(b, ptrToInterface(code, p+code.offset))
@@ -3264,7 +3264,7 @@ func encodeRun(ctx *encodeRuntimeContext, b []byte, codeSet *opcodeSet, opt Enco
 				break
 			}
 			b = append(b, '{')
-			if p == 0 || code.indirect && code.typ.Kind() == reflect.Ptr && ptrToPtr(p) == 0 {
+			if p == 0 || code.nilcheck && code.typ.Kind() == reflect.Ptr && ptrToPtr(p) == 0 {
 				code = code.nextField
 			} else {
 				b = append(b, code.key...)
@@ -4093,7 +4093,7 @@ func encodeRun(ctx *encodeRuntimeContext, b []byte, codeSet *opcodeSet, opt Enco
 			p := load(ctxptr, code.headIdx)
 			b = append(b, code.key...)
 			p += code.offset
-			if code.typ.Kind() == reflect.Ptr && p != 0 && ptrToPtr(p) == 0 {
+			if code.nilcheck && code.typ.Kind() == reflect.Ptr && p != 0 && ptrToPtr(p) == 0 {
 				b = encodeNull(b)
 			} else {
 				v := ptrToInterface(code, p)
@@ -4108,7 +4108,7 @@ func encodeRun(ctx *encodeRuntimeContext, b []byte, codeSet *opcodeSet, opt Enco
 		case opStructFieldOmitEmptyMarshalJSON:
 			ptr := load(ctxptr, code.headIdx)
 			p := ptr + code.offset
-			if code.typ.Kind() == reflect.Ptr && p != 0 && ptrToPtr(p) == 0 {
+			if code.nilcheck && code.typ.Kind() == reflect.Ptr && p != 0 && ptrToPtr(p) == 0 {
 				code = code.nextField
 				break
 			}