chiyi
4bf991b3e7
- Service binding via reflection with 4 method signatures - Dependency injection (Wired/auto tags) and guards - Streamable HTTP (NDJSON) streaming responses - Go/TypeScript client code generation (self-contained, with interceptors) - Enum support, structured Result, logging - 16 regression tests covering all fixed bugs
61 lines
1.4 KiB
Go
61 lines
1.4 KiB
Go
package fun
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import (
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"fmt"
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"reflect"
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)
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const (
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successCode uint8 = iota
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cellErrorCode
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errorCode
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)
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type Result[T any] struct {
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Id string `json:"id,omitempty"`
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Code *uint16 `json:"code,omitempty"`
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Data *T `json:"data,omitempty"`
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Msg *string `json:"msg,omitempty"`
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Status uint8 `json:"status"`
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}
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// Error 让 Result 实现 error 接口，业务方法可直接返回，Code/Msg/Status 随结果透传
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func (r Result[T]) Error() string {
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if r.Msg != nil {
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return *r.Msg
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}
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if r.Code != nil {
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return fmt.Sprintf("code=%d", *r.Code)
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}
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return "fun: unknown error"
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}
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// Error 构造带错误码的错误响应，作为 error 返回
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// 用法：return "", fun.Error(4001, "登录失败")
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func Error(code uint16, msg string) error {
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return Result[any]{Code: &code, Msg: &msg, Status: errorCode}
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}
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func callError(err error) Result[any] {
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return Result[any]{Msg: new(err.Error()), Status: cellErrorCode}
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}
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// success 构造成功响应,空切片规范化为 [] 而不是 null
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func success(data any) Result[any] {
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return Result[any]{Data: nonNil(data), Status: successCode}
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}
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// nonNil 返回 data 的指针;空切片会重建为同类型的非 nil 空切片,
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// 保证 JSON 序列化输出 [] 而不是 null
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func nonNil(data any) *any {
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if data == nil {
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return nil
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}
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v := reflect.ValueOf(data)
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if v.Kind() == reflect.Slice && v.Len() == 0 {
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return new(reflect.MakeSlice(v.Type(), 0, 0).Interface())
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}
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return &data
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}
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