#### Version 0.7.8

* Refactor: use mapperObject refactored the static version implementation.
* 2022-04-16 10:00 in ShangHai

Author: devfeel

convert.go

@@ -186,7 +186,7 @@ func ToInt64(value interface{}) (d int64) {
 
 type argInt []int
 
-// get int by index from int slice
+// Get int by index from int slice
 func (a argInt) Get(i int, args ...int) (r int) {
 	if i >= 0 && i < len(a) {
 		r = a[i]

example/typewrapper/main.go

@@ -1,6 +1,8 @@
 package main
 
 import (
+	"fmt"
+	"github.com/devfeel/mapper"
 	"reflect"
 	"time"
 )
@@ -26,7 +28,7 @@ type decimal struct {
 }
 
 type DecimalWrapper struct {
-	// mapper.BaseTypeWrapper
+	mapper.BaseTypeWrapper
 }
 
 func (w *DecimalWrapper) IsType(value reflect.Value) bool {
@@ -37,14 +39,14 @@ func (w *DecimalWrapper) IsType(value reflect.Value) bool {
 }
 
 func main() {
-	/*
-		mapper.UseWrapper(&DecimalWrapper{})
-		user := &User{Name: "test", Age: 10, Score: decimal{value: 1}, Time: time.Now()}
-		stu := &Student{}
 
-		mapper.AutoMapper(user, stu)
+	mapper.UseWrapper(&DecimalWrapper{})
+	user := &User{Name: "test", Age: 10, Score: decimal{value: 1}, Time: time.Now()}
+	stu := &Student{}
+
+	mapper.AutoMapper(user, stu)
+
+	fmt.Println(user)
+	fmt.Println(stu)
 
-		fmt.Println(user)
-		fmt.Println(stu)
-	*/
 }

mapper.go

@@ -19,6 +19,7 @@ type IMapper interface {
 	JsonToMap(body []byte, toMap *map[string]interface{}) error
 
 	Register(obj interface{}) error
+	UseWrapper(w TypeWrapper)
 
 	GetTypeName(obj interface{}) string
 	GetFieldName(objElem reflect.Value, index int) string
@@ -51,6 +52,11 @@ func PackageVersion() string {
 	return packageVersion
 }
 
+// UseWrapper register a type wrapper
+func UseWrapper(w TypeWrapper) {
+	standardMapper.UseWrapper(w)
+}
+
 // CheckIsTypeWrapper check value is in type wrappers
 func CheckIsTypeWrapper(value reflect.Value) bool {
 	return standardMapper.CheckIsTypeWrapper(value)

mapper_object.go

@@ -199,6 +199,14 @@ func (dm *mapperObject) Register(obj interface{}) error {
 	return dm.registerValue(objValue)
 }
 
+// UseWrapper register a type wrapper
+func (dm *mapperObject) UseWrapper(w TypeWrapper) {
+	if len(dm.typeWrappers) > 0 {
+		dm.typeWrappers[len(dm.typeWrappers)-1].SetNext(w)
+	}
+	dm.typeWrappers = append(dm.typeWrappers, w)
+}
+
 // MapToSlice mapper from map[string]interface{} to a slice of any type's ptr
 // toSlice must be a slice of any type.
 func (dm *mapperObject) MapToSlice(fromMap map[string]interface{}, toSlice interface{}) error {

mapper_object_internal.go

@@ -102,7 +102,7 @@ func (dm *mapperObject) elemToStruct(fromElem, toElem reflect.Value) {
 			x := reflect.New(toFieldInfo.Type()).Elem()
 			err := dm.elemMapper(fromFieldInfo, x)
 			if err != nil {
-				fmt.Println("auto mapper field", fromFieldInfo, "=>", toFieldInfo, "error", err.Error())
+				fmt.Println("auto mapper failed", fromFieldInfo, "=>", toFieldInfo, "error", err.Error())
 			} else {
 				toFieldInfo.Set(x)
 			}