feat: 深度克隆支持map复制

op_array/util.go

@@ -9,6 +9,7 @@ package op_array
 
 import (
 	"fmt"
+	"reflect"
 )
 
 // ToMap 数组转map
@@ -112,3 +113,34 @@ func Tree[ID comparable, Value any](dataList []Value, formatParentID func(v Valu
 	}
 	return rootData
 }
+
+// DeepClone 深度克隆一个数组, 每一个元素的地址均重新分配
+func DeepClone[Value any](dataList []Value) []Value {
+	v := *new(Value)
+	vType := reflect.TypeOf(v)
+	res := make([]Value, len(dataList))
+	for i := 0; i < len(dataList); i++ {
+		newV := new(Value)
+		switch vType.Kind() {
+		case reflect.Ptr:
+			// 解引用, 并单独读取值后重新分配地址
+			copyV := reflect.New(vType.Elem()).Elem()
+			copyV.Set(reflect.ValueOf(dataList[i]).Elem())
+			*newV = copyV.Addr().Interface().(Value)
+		case reflect.Map:
+			mapVal := reflect.ValueOf(dataList[i])
+			mapKeyList := mapVal.MapKeys()
+			newMap := reflect.MakeMap(vType)
+			for _, key := range mapKeyList {
+				// 通过键获取对应的值
+				value := mapVal.MapIndex(key)
+				newMap.SetMapIndex(key, value)
+			}
+			*newV = newMap.Interface().(Value)
+		default:
+			*newV = dataList[i]
+		}
+		res[i] = *newV
+	}
+	return res
+}

op_array/util_test.go

@@ -8,6 +8,7 @@
 package op_array
 
 import (
+	"fmt"
 	"testing"
 
 	"git.zhangdeman.cn/zhangdeman/serialize"
@@ -32,3 +33,38 @@ func TestTree(t *testing.T) {
 	res := Tree(dataList, func(v Data) int { return v.ParentID }, func(v Data) int { return v.ID })
 	serialize.JSON.ConsoleOutput(res)
 }
+
+func TestClone(t *testing.T) {
+	type Data struct {
+		ID int `json:"id" dc:"数据ID"`
+	}
+
+	// 字面结构体
+	dataList := []Data{
+		{ID: 1},
+		{ID: 2},
+	}
+	res := DeepClone(dataList)
+	fmt.Println(fmt.Sprintf("%p", &res[0]), fmt.Sprintf("%p", &dataList[0]))
+	fmt.Println(fmt.Sprintf("%p", &res[1]), fmt.Sprintf("%p", &dataList[1]))
+
+	// 结构体指针
+	dataList1 := []*Data{
+		{ID: 1},
+		{ID: 2},
+	}
+	res1 := DeepClone(dataList1)
+	fmt.Println(fmt.Sprintf("%p", &res1[0]), fmt.Sprintf("%p", &dataList1[0]))
+	fmt.Println(fmt.Sprintf("%p", &res1[1]), fmt.Sprintf("%p", &dataList1[1]))
+
+	// Map数据
+	dataList2 := []map[string]any{
+		{"id": 1},
+		{"id": 2},
+	}
+	res2 := DeepClone(dataList2)
+	fmt.Println(fmt.Sprintf("%p", &res2[0]), fmt.Sprintf("%p", &dataList2[0]))
+	fmt.Println(fmt.Sprintf("%p", &res2[1]), fmt.Sprintf("%p", &dataList2[1]))
+	serialize.JSON.ConsoleOutput(res2)
+	serialize.JSON.ConsoleOutput(dataList2)
+}