feat: 支持反射设置指针类型字段
- 如果目标字段是指针类型，它会尝试直接赋值（如果类型兼容），或创建一个新指针并递归设置其指向的值。 - `rfx_example_test.go` 中新增了测试用例，以验证对 `*string` 等指针字段的设置功能。
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21
rfx.go
21
rfx.go
@ -257,6 +257,27 @@ func (r *rfx) setValue(field reflect.Value, v any) bool {
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return true
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}
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// 处理指针类型
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if field.Type().Kind() == reflect.Ptr {
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// 如果传入的值已经是指针类型,尝试直接赋值
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if val.Type().AssignableTo(field.Type()) {
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field.Set(val)
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return true
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}
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// 如果传入的值不是指针,创建新指针并设置值
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elemType := field.Type().Elem()
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newPtr := reflect.New(elemType)
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// 递归设置指针指向的值
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if !r.setValue(newPtr.Elem(), v) {
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return false
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}
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field.Set(newPtr)
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return true
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}
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// 优先使用 cast 进行智能类型转换
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// 这样可以处理 string <-> number, number <-> bool 等常见转换
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targetType := field.Type()
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@ -8,20 +8,25 @@ func ExampleNew_withPointer() {
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type Person struct {
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Name string
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Age int
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Email *string
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}
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person := Person{Name: "Alice", Age: 30}
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email := "alice@example.com"
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person := Person{Name: "Alice", Age: 30, Email: &email}
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// 传入指针 - 修改会影响原始数据
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rfx := New(&person)
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rfx.Set("Name", "Bob")
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rfx.Set("Age", 35)
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// 原始数据已被修改
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fmt.Printf("Name: %s, Age: %d\n", person.Name, person.Age)
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// 对于指针字段,Set 会设置指针指向的值
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rfx.Set("Email", "bob@example.com")
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// 原始数据已被修改(包括指针字段指向的值)
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fmt.Printf("Name: %s, Age: %d, Email: %s\n", person.Name, person.Age, *person.Email)
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// Output:
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// Name: Bob, Age: 35
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// Name: Bob, Age: 35, Email: bob@example.com
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}
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// ExampleNew_withPointer_map 演示传入 map 指针
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@ -65,19 +70,25 @@ func ExampleNew_withValue() {
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type Person struct {
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Name string
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Age int
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Email *string
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}
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person := Person{Name: "Alice", Age: 30}
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email := "alice@example.com"
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person := Person{Name: "Alice", Age: 30, Email: &email}
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// 传入值 - 会创建深度克隆,修改不会影响原始数据
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// 传入值 - 会创建深度克隆,修改不会影响原始数据(包括指针字段)
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rfx := New(person)
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fmt.Printf("After New: %+v\n", rfx.Any())
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// 显示克隆后的数据(指针字段会显示实际值)
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clonedPerson := rfx.Any().(Person)
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fmt.Printf("After New - Name: %s, Age: %d, Email: %s\n",
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clonedPerson.Name, clonedPerson.Age, *clonedPerson.Email)
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rfx.Set("Name", "Bob")
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rfx.Set("Age", 35)
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// 原始数据未被修改
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fmt.Printf("Original - Name: %s, Age: %d\n", person.Name, person.Age)
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fmt.Printf("Original - Name: %s, Age: %d, Email: %s\n", person.Name, person.Age, *person.Email)
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// rfx 内部的数据已修改
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fmt.Printf("Clone - Name: %s, Age: %d\n",
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@ -85,38 +96,54 @@ func ExampleNew_withValue() {
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rfx.Get("Age").Int())
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// Output:
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// After New: {Name:Alice Age:30}
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// Original - Name: Alice, Age: 30
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// After New - Name: Alice, Age: 30, Email: alice@example.com
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// Original - Name: Alice, Age: 30, Email: alice@example.com
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// Clone - Name: Bob, Age: 35
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}
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// ExampleNew_withValue_map 演示传入 map 值
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// 传入值时会创建深度克隆,即使 map 是引用类型
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func ExampleNew_withValue_map() {
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host := "localhost"
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port := 8080
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config := map[string]any{
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"host": "localhost",
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"port": 8080,
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"host": &host,
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"port": &port,
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"enabled": true,
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}
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// 传入 map 值 - 会创建深度克隆
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// 传入 map 值 - 会创建深度克隆(包括指针值)
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rfx := New(config)
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fmt.Printf("After New: %v\n", rfx.Any())
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rfx.Set("host", "127.0.0.1")
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rfx.Set("port", 9090)
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// 显示克隆后的数据(指针值会显示实际内容)
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clonedConfig := rfx.Any().(map[string]any)
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fmt.Printf("After New - Host: %s, Port: %d, Enabled: %t\n",
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*clonedConfig["host"].(*string),
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*clonedConfig["port"].(*int),
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clonedConfig["enabled"].(bool))
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// 修改克隆的数据
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newHost := "127.0.0.1"
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newPort := 9090
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clonedConfig["host"] = &newHost
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clonedConfig["port"] = &newPort
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// 原始 map 未被修改
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fmt.Printf("Original - Host: %s, Port: %v\n", config["host"], config["port"])
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fmt.Printf("Original - Host: %s, Port: %d, Enabled: %t\n",
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*config["host"].(*string),
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*config["port"].(*int),
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config["enabled"].(bool))
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// rfx 内部的数据已修改
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fmt.Printf("Clone - Host: %s, Port: %v\n",
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rfx.Get("host").String(),
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rfx.Get("port").Int())
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// 克隆的数据已修改
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fmt.Printf("Clone - Host: %s, Port: %d, Enabled: %t\n",
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*clonedConfig["host"].(*string),
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*clonedConfig["port"].(*int),
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clonedConfig["enabled"].(bool))
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// Output:
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// After New: map[host:localhost port:8080]
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// Original - Host: localhost, Port: 8080
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// Clone - Host: 127.0.0.1, Port: 9090
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// After New - Host: localhost, Port: 8080, Enabled: true
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// Original - Host: localhost, Port: 8080, Enabled: true
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// Clone - Host: 127.0.0.1, Port: 9090, Enabled: true
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}
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// ExampleNew_withValue_slice 演示传入 slice 值
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67
util.go
67
util.go
@ -95,26 +95,69 @@ func cloneSequence(dst, src reflect.Value) {
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}
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// cloneElement 克隆单个元素,处理 interface 包装的情况
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// 对于复杂类型(struct, map, slice, array)进行深度克隆
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// 对于复杂类型(struct, map, slice, array)和指针类型进行深度克隆
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// 对于基本类型,直接返回原始值
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func cloneElement(elem reflect.Value) reflect.Value {
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// 解引用以获取实际值
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actualElem := elem
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for actualElem.Kind() == reflect.Interface || actualElem.Kind() == reflect.Ptr {
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if actualElem.IsNil() {
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return elem
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// 首先检查 elem 自身是否是 interface
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if elem.Kind() == reflect.Interface && !elem.IsNil() {
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// 获取 interface 包装的实际值
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wrapped := elem.Elem()
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// 如果 interface 包装的是指针,需要深度克隆指针
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if wrapped.Kind() == reflect.Ptr && !wrapped.IsNil() {
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// 克隆指针指向的值
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pointedValue := wrapped.Elem()
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if needsDeepClone(pointedValue.Kind()) {
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// 复杂类型:递归克隆
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clonedValue := reflect.New(pointedValue.Type()).Elem()
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CloneValue(clonedValue, pointedValue)
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clonedPtr := reflect.New(pointedValue.Type())
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clonedPtr.Elem().Set(clonedValue)
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return clonedPtr
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} else {
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// 基本类型:创建新指针
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clonedPtr := reflect.New(pointedValue.Type())
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clonedPtr.Elem().Set(pointedValue)
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return clonedPtr
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}
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actualElem = actualElem.Elem()
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}
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// 如果元素需要递归克隆(struct, map, slice, array)
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if actualElem.IsValid() && needsDeepClone(actualElem.Kind()) {
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clonedElem := reflect.New(actualElem.Type()).Elem()
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CloneValue(clonedElem, actualElem)
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// interface 包装的是复杂类型
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if needsDeepClone(wrapped.Kind()) {
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clonedElem := reflect.New(wrapped.Type()).Elem()
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CloneValue(clonedElem, wrapped)
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return clonedElem
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}
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// 对于基本类型,直接返回原始值
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// interface 包装的是基本类型,直接返回
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return elem
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}
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// 处理直接的指针类型
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if elem.Kind() == reflect.Ptr && !elem.IsNil() {
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pointedValue := elem.Elem()
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if needsDeepClone(pointedValue.Kind()) {
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clonedValue := reflect.New(pointedValue.Type()).Elem()
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CloneValue(clonedValue, pointedValue)
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clonedPtr := reflect.New(pointedValue.Type())
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clonedPtr.Elem().Set(clonedValue)
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return clonedPtr
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} else {
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// 基本类型的指针,创建新指针
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clonedPtr := reflect.New(pointedValue.Type())
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clonedPtr.Elem().Set(pointedValue)
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return clonedPtr
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}
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}
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// 处理复杂类型
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if needsDeepClone(elem.Kind()) {
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clonedElem := reflect.New(elem.Type()).Elem()
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CloneValue(clonedElem, elem)
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return clonedElem
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}
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// 基本类型,直接返回
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return elem
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}
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