refactor: consolidate As/Must APIs with Quiet and Must helpers (v1.2.0)
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AI Engineer
parent
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commit
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12
CHANGELOG.md
12
CHANGELOG.md
@ -3,17 +3,11 @@
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## [v1.2.0] - 2026-05-04
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### Added
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- **语义化 API**: 引入 `To[T]` (严格/含错) 和 `As[T]` (静默/零值) 泛型接口，作为全能类型转换入口。
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- **摩擦消除工具**: 新增 `Quiet[T]` 和 `Must[T]` 通用辅助函数，用于包装 error-returning 函数。
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- **智能穿透**: `To[T]` 支持 JSON 自动双向转换（Input string/[]byte <-> Target struct/map/slice）。
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- **容器 API 统一**:
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- `ToMap` / `AsMap` (替代 `MakeMap`)
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- `ToSlice` / `AsSlice` (替代 `MakeSlice`)
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- `AsJSON` / `AsJSONBytes` (替代 `MustToJSON`)
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- `AsFromJSON` (替代 `MustFromJSON`)
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### Removed
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- **YAML 支持**: 移除 `gopkg.in/yaml.v3` 依赖及所有 YAML 相关 API，专注 JSON 以保持核心极致精简。
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### Deprecated
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- **MustXxx 系列**: 建议迁移至语义更明确的 `AsXxx`。
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- **MakeXxx 系列**: 建议迁移至 `AsMap` / `AsSlice`。
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- **YAML 支持**: 移除 `gopkg.in/yaml.v3` 依赖及所有 YAML 相关 API。
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- **API 整合**: 移除专门的 `AsXxx` 和 `MustXxx` 系列函数（如 `AsMap`, `AsJSON`, `MustToJSON` 等），推荐使用 `As[T]` 或 `Quiet/Must` 包装。
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## [v1.1.2] - 2026-05-04
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### Added
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41
README.md
41
README.md
@ -7,7 +7,7 @@
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`@go/cast` 是一个为“敏捷开发”设计的 Go 基础工具库。其核心目标是**消除类型摩擦**，让开发者在处理数据时更关注“我想要什么”而不是“原本是什么”。
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* **语义化 API**：通过 `To[T]` (严格/含错) 和 `As[T]` (静默/零值) 提供一致的调用体验。
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* **语义化 API**：通过 `To[T]` (严格/含错) 配合 `Quiet` (静默) 或 `Must` (断言) 提供一致的调用体验。
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* **智能穿透**：自动识别 JSON 文本、结构体映射、KV 展开等复杂场景。
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* **极致性能**：内置 FastEncoder/FastDecoder，单路径处理，最小化内存分配。
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@ -22,23 +22,26 @@ go get apigo.cc/go/cast
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```go
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import "apigo.cc/go/cast"
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// 1. 语义化转换 (To[T] 返回错误, As[T] 返回零值)
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age := cast.As[int]("18") // 18
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val, err := cast.To[int]("abc") // 0, error
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// 1. 语义化转换 (To[T] 返回错误)
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val, err := cast.To[int]("123") // 123, nil
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// 2. 智能 JSON 自动转换
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// 2. 摩擦消除工具 (Quiet 返回零值, Must 失败 Panic)
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age := cast.Quiet(cast.To[int]("abc")) // 0
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uid := cast.Must(cast.To[int]("100")) // 100
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// 3. 快捷方式 (cast.As[T] 等价于 cast.Quiet(cast.To[T]))
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name := cast.As[string](123) // "123"
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// 4. 智能 JSON 自动转换
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// 输入 map/struct -> 目标 string: 自动序列化
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js := cast.As[string](map[string]int{"age": 18}) // `{"age":18}`
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// 输入 string/[]byte -> 目标 struct/map: 自动反序列化
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user, _ := cast.To[User](`{"name":"Tom"}`)
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// 3. 复杂容器转换 (Map/Slice)
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// 5. 复杂容器转换 (Map/Slice)
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m, _ := cast.ToMap[string, int]([]any{"id", "1", "score", 100})
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list := cast.AsSlice[int]([]string{"1", "2", "3"})
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// 4. 泛型三元运算
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status := cast.If(isAdmin, "Admin", "User")
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list := cast.As[[]int]([]string{"1", "2", "3"})
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```
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## 🛠 API 指南
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@ -47,21 +50,23 @@ status := cast.If(isAdmin, "Admin", "User")
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1. **通用转换**
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* `To[T any](any) (T, error)` —— 万能转换入口。支持基础类型、Slice、Map 以及 JSON 的双向自动转换。
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* `As[T any](any) T` —— 零摩擦转换。失败时返回类型零值。
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* `As[T any](any) T` —— 零摩擦转换快捷方式。失败时返回类型零值。
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2. **Map / Slice 转换**
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2. **错误处理工具**
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* `Quiet[T any](T, error) T` —— 忽略错误，返回转换后的值（若有错则返回零值）。
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* `Must[T any](T, error) T` —— 严谨模式。若有错误则直接 Panic，常用于全局初始化。
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3. **容器转换**
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* `ToMap[K, V](any) (map[K]V, error)` —— 构建新 Map。
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* `AsMap[K, V](any) map[K]V` —— 构建新 Map (失败返回空 Map)。
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* `ToSlice[T](any) ([]T, error)` —— 构建新 Slice。
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* `AsSlice[T](any) []T` —— 构建新 Slice (失败返回空 Slice)。
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* `FillMap(target, source)` | `FillSlice(target, source)` —— 填充现有容器。
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3. **JSON 序列化与构建**
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* **编码**: `ToJSON(any) (string, error)` | `AsJSON(any) string`
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* **解码**: `FromJSON[T](any) (T, error)` | `AsFromJSON[T](any) T`
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4. **JSON 序列化与构建**
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* **编码**: `ToJSON(any) (string, error)` | `ToJSONBytes(any) ([]byte, error)`
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* **解码**: `UnmarshalJSON(data, target) error` | `FromJSON[T](any) (T, error)`
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* **进阶**: `ToJSONDesensitize(any, []string) (string, error)` (支持字段脱敏)
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4. **泛型工具**
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5. **泛型工具**
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* `If[T any](bool, T, T) T` —— 三元逻辑。
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* `In[T comparable]([]T, T) bool` —— 包含判断。
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* `Ptr[T any](T) *T` —— 快速取指针。
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@ -71,7 +71,7 @@ func BenchmarkJSON(b *testing.B) {
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}
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u := User{ID: 1, Name: "Benchmark User"}
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for i := 0; i < b.N; i++ {
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_ = cast.MustToJSON(u)
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_ = cast.As[string](u)
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}
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}
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@ -147,7 +147,7 @@ func BenchmarkToJSON_SimpleStruct(b *testing.B) {
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b.ResetTimer()
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for i := 0; i < b.N; i++ {
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// 这里包含了你特有的 makeJSONType 清洗逻辑和 FixUpperCase 逻辑
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_ = cast.MustToJSON(u)
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_ = cast.As[string](u)
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}
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}
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@ -160,6 +160,6 @@ func BenchmarkToJSON_DirtyMap(b *testing.B) {
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}
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b.ResetTimer()
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for i := 0; i < b.N; i++ {
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_ = cast.MustToJSON(val)
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_ = cast.As[string](val)
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}
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}
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197
cast.go
197
cast.go
@ -25,6 +25,23 @@ func In[T comparable](arr []T, val T) bool {
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return slices.Contains(arr, val)
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}
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// Quiet 忽略错误，返回零值
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func Quiet[T any](v T, err error) T {
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if err != nil {
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var zero T
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return zero
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}
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return v
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}
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// Must 严谨模式，报错即刻崩溃
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func Must[T any](v T, err error) T {
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if err != nil {
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panic(err)
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}
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return v
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}
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func RealValue(v reflect.Value) reflect.Value {
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for v.Kind() == reflect.Pointer || v.Kind() == reflect.Interface {
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if v.IsNil() {
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@ -70,17 +87,112 @@ func To[T any](v any) (T, error) {
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}
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// 4. 处理基础类型
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res := reflectCast(v, targetType)
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if !res.IsValid() {
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return zero, fmt.Errorf("cast to %v failed", targetType)
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res, err := reflectCastE(v, targetType)
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if err != nil {
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return zero, err
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}
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return res.Interface().(T), nil
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}
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func reflectCastE(value any, t reflect.Type) (reflect.Value, error) {
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switch t.Kind() {
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case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
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i, err := ToInt64E(value)
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if err != nil {
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return reflect.Value{}, err
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}
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return reflect.ValueOf(i).Convert(t), nil
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case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr:
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i, err := ToUint64E(value)
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if err != nil {
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return reflect.Value{}, err
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}
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return reflect.ValueOf(i).Convert(t), nil
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case reflect.Float32, reflect.Float64:
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f, err := ToFloat64E(value)
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if err != nil {
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return reflect.Value{}, err
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}
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return reflect.ValueOf(f).Convert(t), nil
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case reflect.String:
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return reflect.ValueOf(String(value)).Convert(t), nil
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case reflect.Bool:
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return reflect.ValueOf(Bool(value)).Convert(t), nil
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case reflect.Interface:
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if value == nil {
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return reflect.Zero(t), nil
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}
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return reflect.ValueOf(value), nil
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}
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if t == reflect.TypeOf(time.Duration(0)) {
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return reflect.ValueOf(Duration(value)), nil
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}
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return reflect.Zero(t), fmt.Errorf("unsupported target type: %v", t)
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}
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func ToInt64E(v any) (int64, error) {
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if i, ok := toInt64(v); ok {
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return i, nil
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}
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s := String(v)
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i, err := strconv.ParseInt(s, 10, 64)
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if err == nil {
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return i, nil
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}
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if f, err := strconv.ParseFloat(s, 64); err == nil {
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return int64(f), nil
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}
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return 0, fmt.Errorf("cannot cast %v to int64", v)
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}
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func ToUint64E(v any) (uint64, error) {
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switch realValue := v.(type) {
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case int, int8, int16, int32, int64:
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return uint64(Int64(realValue)), nil
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case uint, uint8, uint16, uint32, uint64:
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return Uint64(realValue), nil
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case float32, float64:
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return uint64(Float64(realValue)), nil
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case bool:
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return If(realValue, uint64(1), uint64(0)), nil
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}
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s := String(v)
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i, err := strconv.ParseUint(s, 10, 64)
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if err == nil {
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return i, nil
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}
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if f, err := strconv.ParseFloat(s, 64); err == nil {
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return uint64(f), nil
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}
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return 0, fmt.Errorf("cannot cast %v to uint64", v)
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}
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func ToFloat64E(v any) (float64, error) {
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switch realValue := v.(type) {
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case int, int8, int16, int32, int64:
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return float64(Int64(realValue)), nil
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case uint, uint8, uint16, uint32, uint64:
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return float64(Uint64(realValue)), nil
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case float32:
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return float64(realValue), nil
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case float64:
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return realValue, nil
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case bool:
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return If(realValue, 1.0, 0.0), nil
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}
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s := String(v)
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f, err := strconv.ParseFloat(s, 64)
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if err != nil {
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return 0, fmt.Errorf("cannot cast %v to float64", v)
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}
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return f, nil
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}
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// As 泛型转换 (失败返回零值)
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func As[T any](v any) T {
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res, _ := To[T](v)
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return res
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return Quiet(To[T](v))
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}
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func isJSONText(v any) bool {
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@ -106,11 +218,11 @@ func isComplexType(t reflect.Type) bool {
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func isComplexValue(v any) bool {
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if v == nil {
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return false
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return true
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}
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rv := RealValue(reflect.ValueOf(v))
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if !rv.IsValid() {
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return false
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if !rv.IsValid() || rv.Kind() == reflect.Pointer || rv.Kind() == reflect.Interface {
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return true
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}
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kind := rv.Kind()
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return kind == reflect.Struct || kind == reflect.Map || (kind == reflect.Slice && rv.Type().Elem().Kind() != reflect.Uint8)
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@ -336,21 +448,6 @@ func Duration(value any) time.Duration {
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return 0
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}
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func AsJSONBytes(value any) []byte {
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j, _ := ToJSONBytes(value)
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return j
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}
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func AsJSON(value any) string {
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s, _ := ToJSON(value)
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return s
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}
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func AsFromJSON[T any](data any) T {
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v, _ := FromJSON[T](data)
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return v
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}
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func ToJSONBytes(value any) ([]byte, error) {
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return fastToJSONBytes(value)
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}
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@ -367,8 +464,6 @@ func ToJSONDesensitizeBytes(value any, keys []string) ([]byte, error) {
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return fastToJSONBytes(value, keys...)
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}
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func MustToJSONBytes(value any) []byte { return AsJSONBytes(value) }
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func ToJSON(value any) (string, error) {
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j, err := ToJSONBytes(value)
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if err != nil {
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@ -377,10 +472,8 @@ func ToJSON(value any) (string, error) {
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return string(j), nil
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}
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func MustToJSON(value any) string { return AsJSON(value) }
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func PrettyToJSONBytes(value any) []byte {
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j := AsJSONBytes(value)
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j := Quiet(ToJSONBytes(value))
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r := &bytes.Buffer{}
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if err := json.Indent(r, j, "", " "); err == nil {
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return r.Bytes()
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@ -417,8 +510,6 @@ func FromJSON[T any](data any) (T, error) {
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return v, err
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}
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func MustFromJSON[T any](data any) T { return AsFromJSON[T](data) }
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// --- Others (Keep logic but clean style) ---
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func Split(s, sep string) []string {
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@ -523,12 +614,6 @@ func ToMap[K comparable, V any](source any) (map[K]V, error) {
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return m, nil
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}
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// AsMap 泛型构建新 Map (失败返回空 Map)
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func AsMap[K comparable, V any](source any) map[K]V {
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m, _ := ToMap[K, V](source)
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return m
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}
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// ToSlice 泛型构建新 Slice
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func ToSlice[T any](source any) ([]T, error) {
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var s []T
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@ -536,12 +621,6 @@ func ToSlice[T any](source any) ([]T, error) {
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return s, nil
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}
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// AsSlice 泛型构建新 Slice (失败返回空 Slice)
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func AsSlice[T any](source any) []T {
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s, _ := ToSlice[T](source)
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return s
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}
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// FillMap 将 source 填充到目标 map 中 (兼容旧 API 逻辑)
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func FillMap(target any, source any) {
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rv := reflect.ValueOf(target)
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@ -647,40 +726,8 @@ func fillToSlice(sliceRv reflect.Value, source any) {
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}
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}
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// MakeMap 泛型构建新 Map (DEPRECATED: Use AsMap)
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func MakeMap[K comparable, V any](source any) map[K]V {
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return AsMap[K, V](source)
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}
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// MakeSlice 泛型构建新 Slice (DEPRECATED: Use AsSlice)
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func MakeSlice[T any](source any) []T {
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return AsSlice[T](source)
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}
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func reflectCast(value any, t reflect.Type) reflect.Value {
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switch t.Kind() {
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case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
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return reflect.ValueOf(Int64(value)).Convert(t)
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case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr:
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return reflect.ValueOf(Uint64(value)).Convert(t)
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case reflect.Float32, reflect.Float64:
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return reflect.ValueOf(Float64(value)).Convert(t)
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case reflect.String:
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return reflect.ValueOf(String(value)).Convert(t)
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case reflect.Bool:
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return reflect.ValueOf(Bool(value)).Convert(t)
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case reflect.Interface:
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if value == nil {
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return reflect.Zero(t)
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}
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return reflect.ValueOf(value)
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}
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if t == reflect.TypeOf(time.Duration(0)) {
|
||||
return reflect.ValueOf(Duration(value))
|
||||
}
|
||||
|
||||
return reflect.Zero(t)
|
||||
return Quiet(reflectCastE(value, t))
|
||||
}
|
||||
|
||||
// 补充缺失的 Key 转换工具
|
||||
|
||||
20
cast_test.go
20
cast_test.go
@ -32,7 +32,7 @@ func TestStructToJSON(t *testing.T) {
|
||||
Age int
|
||||
}
|
||||
u := User{Name: "Tom", Age: 18}
|
||||
js := cast.MustToJSON(u)
|
||||
js := cast.As[string](u)
|
||||
// 验证首字母小写逻辑
|
||||
if !strings.Contains(js, `"name":"Tom"`) || !strings.Contains(js, `"age":18`) {
|
||||
t.Errorf("Struct to JSON auto-lowercase failed: %s", js)
|
||||
@ -61,7 +61,7 @@ func TestSpecialJSON(t *testing.T) {
|
||||
|
||||
// 标准 json.Marshal 会变成 "<a> \u0026 <b>"
|
||||
// 我们期望输出原始字符 "<a> & <b>"
|
||||
js := cast.MustToJSON(c)
|
||||
js := cast.As[string](c)
|
||||
expected := `{"text":"<a> & <b>"}`
|
||||
if js != expected {
|
||||
t.Errorf("Special JSON failed.\nExpected: %s\nActual: %s", expected, js)
|
||||
@ -84,7 +84,7 @@ func TestComplexJSONType(t *testing.T) {
|
||||
},
|
||||
}
|
||||
|
||||
js := cast.MustToJSON(data)
|
||||
js := cast.As[string](data)
|
||||
// 期望 123 被转为 "123" 且内容正确
|
||||
if !strings.Contains(js, `"123":"numeric key"`) || !strings.Contains(js, `"ok":true`) {
|
||||
t.Errorf("Complex JSON type failed: %s", js)
|
||||
@ -138,7 +138,7 @@ func TestGojaMapToArrayFallback(t *testing.T) {
|
||||
"2": "cherry", // 字符串形式的数字也应该被正确转换
|
||||
}
|
||||
|
||||
js := cast.MustToJSON(mockGojaArray)
|
||||
js := cast.As[string](mockGojaArray)
|
||||
|
||||
// 我们期望它被正确识别并转化为标准的 JSON 数组，且顺序不会乱
|
||||
expected := `["apple","banana","cherry"]`
|
||||
@ -194,7 +194,7 @@ func TestUnaddressableStruct(t *testing.T) {
|
||||
}
|
||||
}()
|
||||
|
||||
res := cast.MustToJSON(d)
|
||||
res := cast.As[string](d)
|
||||
if !strings.Contains(res, "\"name\"") {
|
||||
t.Errorf("Value struct ToJSON failed to lowercase key: %s", res)
|
||||
}
|
||||
@ -203,19 +203,19 @@ func TestUnaddressableStruct(t *testing.T) {
|
||||
func TestToJSON_Nil(t *testing.T) {
|
||||
// Nil slice should be []
|
||||
var s []int
|
||||
if js := cast.MustToJSON(s); js != "[]" {
|
||||
if js := cast.As[string](s); js != "[]" {
|
||||
t.Errorf("Nil slice expected [], got %s", js)
|
||||
}
|
||||
|
||||
// Nil map should be {}
|
||||
var m map[string]int
|
||||
if js := cast.MustToJSON(m); js != "{}" {
|
||||
if js := cast.As[string](m); js != "{}" {
|
||||
t.Errorf("Nil map expected {}, got %s", js)
|
||||
}
|
||||
|
||||
// Nil pointer should be null
|
||||
var p *int
|
||||
if js := cast.MustToJSON(p); js != "null" {
|
||||
if js := cast.As[string](p); js != "null" {
|
||||
t.Errorf("Nil pointer expected null, got %s", js)
|
||||
}
|
||||
}
|
||||
@ -247,7 +247,7 @@ func TestFastEncoder_MapAny(t *testing.T) {
|
||||
"userName": "admin",
|
||||
123: "val",
|
||||
}
|
||||
js := cast.MustToJSON(data)
|
||||
js := cast.As[string](data)
|
||||
if !strings.Contains(js, `"123":"val"`) || !strings.Contains(js, `"userName":"admin"`) {
|
||||
t.Errorf("MapAny encoding failed: %s", js)
|
||||
}
|
||||
@ -258,7 +258,7 @@ func TestFastEncoder_GojaArray(t *testing.T) {
|
||||
0: "a",
|
||||
1: "b",
|
||||
}
|
||||
js := cast.MustToJSON(data)
|
||||
js := cast.As[string](data)
|
||||
if js != `["a","b"]` {
|
||||
t.Errorf("Goja array fallback failed: %s", js)
|
||||
}
|
||||
|
||||
@ -23,7 +23,7 @@ func TestToMap(t *testing.T) {
|
||||
}
|
||||
|
||||
// Test slice-to-map (KV)
|
||||
m2 := cast.AsMap[int, string]([]any{"1", "a", 2, 200})
|
||||
m2 := cast.As[map[int]string]([]any{"1", "a", 2, 200})
|
||||
if m2[1] != "a" || m2[2] != "200" {
|
||||
t.Errorf("Slice-to-map failed: %v", m2)
|
||||
}
|
||||
@ -63,22 +63,22 @@ func TestJSON(t *testing.T) {
|
||||
t.Errorf("FromJSON failed: %v, %v", err, c2)
|
||||
}
|
||||
|
||||
// Test AsFromJSON
|
||||
c3 := cast.AsFromJSON[Config](data)
|
||||
// Test As[T] from JSON
|
||||
c3 := cast.As[Config](data)
|
||||
if c3.Port != 8080 {
|
||||
t.Errorf("AsFromJSON failed: %v", c3)
|
||||
t.Errorf("As[Config] failed: %v", c3)
|
||||
}
|
||||
}
|
||||
|
||||
func TestMakeSlice(t *testing.T) {
|
||||
// Test MakeSlice with various inputs
|
||||
s1 := cast.AsSlice[int]("123")
|
||||
func TestGenericAsSlice(t *testing.T) {
|
||||
// Test As with various inputs
|
||||
s1 := cast.As[[]int]("123")
|
||||
if len(s1) != 1 || s1[0] != 123 {
|
||||
t.Errorf("AsSlice primitive failed: %v", s1)
|
||||
t.Errorf("As[[]int] primitive failed: %v", s1)
|
||||
}
|
||||
|
||||
s2 := cast.AsSlice[string]([]int{1, 2})
|
||||
s2 := cast.As[[]string]([]int{1, 2})
|
||||
if len(s2) != 2 || s2[0] != "1" || s2[1] != "2" {
|
||||
t.Errorf("AsSlice slice failed: %v", s2)
|
||||
t.Errorf("As[[]string] slice failed: %v", s2)
|
||||
}
|
||||
}
|
||||
|
||||
@ -46,6 +46,24 @@ func TestToAs(t *testing.T) {
|
||||
}
|
||||
}
|
||||
|
||||
func TestQuietMust(t *testing.T) {
|
||||
// Quiet
|
||||
if v := cast.Quiet(cast.To[int]("abc")); v != 0 {
|
||||
t.Errorf("Quiet failed: %v", v)
|
||||
}
|
||||
if v := cast.Quiet(cast.To[int]("123")); v != 123 {
|
||||
t.Errorf("Quiet failed: %v", v)
|
||||
}
|
||||
|
||||
// Must
|
||||
defer func() {
|
||||
if r := recover(); r == nil {
|
||||
t.Errorf("Must should panic on error")
|
||||
}
|
||||
}()
|
||||
cast.Must(cast.To[int]("abc"))
|
||||
}
|
||||
|
||||
func TestMapSliceAPIs(t *testing.T) {
|
||||
// ToMap
|
||||
m, err := cast.ToMap[string, int]([]any{"a", "1", "b", 2})
|
||||
@ -53,10 +71,10 @@ func TestMapSliceAPIs(t *testing.T) {
|
||||
t.Errorf("ToMap failed: %v, %v", m, err)
|
||||
}
|
||||
|
||||
// AsMap
|
||||
m2 := cast.AsMap[string, int]([]any{"c", "3"})
|
||||
// As[map...]
|
||||
m2 := cast.As[map[string]int]([]any{"c", "3"})
|
||||
if m2["c"] != 3 {
|
||||
t.Errorf("AsMap failed: %v", m2)
|
||||
t.Errorf("As[map] failed: %v", m2)
|
||||
}
|
||||
|
||||
// ToSlice
|
||||
@ -65,9 +83,9 @@ func TestMapSliceAPIs(t *testing.T) {
|
||||
t.Errorf("ToSlice failed: %v, %v", s, err)
|
||||
}
|
||||
|
||||
// AsSlice
|
||||
s2 := cast.AsSlice[string]([]int{1, 2})
|
||||
// As[[]...]
|
||||
s2 := cast.As[[]string]([]int{1, 2})
|
||||
if len(s2) != 2 || s2[0] != "1" || s2[1] != "2" {
|
||||
t.Errorf("AsSlice failed: %v", s2)
|
||||
t.Errorf("As[[]string] failed: %v", s2)
|
||||
}
|
||||
}
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user