[英]EXC_BAD_ACCESS when injecting a closure at runtime using Typhoon
我有一個混合的ObjC和Swift iOS項目。
我有一個類用於測試在運行時注入一個簡單的閉包:
@objc
class TyphoonClosureTester: NSObject {
@objc var closure: (() -> Void)?
@objc
override init() {}
@objc
init(closure: (() -> Void)?) {
self.closure = closure
}
@objc
func callClosure() {
guard let closure = closure else {
assert(false, "no closure 1")
return
}
closure()
NSLog("Have called closure 1 OK")
}
}
我的Typhoon程序集文件包含這個函數:
func testAClosure(closure: @escaping () -> Void) -> AnyObject {
return TyphoonDefinition.withClass(TyphoonClosureTester.self) { definition in
definition?.useInitializer(#selector(TyphoonClosureTester.init(closure:))) { initializer in
initializer?.injectParameter(with: closure)
}
definition?.scope = .prototype
} as AnyObject
}
我嘗試使用此閉包如下:
let closureTester1: TyphoonClosureTester = assembler.testAClosure(closure: {
NSLog(" closure 1 called!")
}) as! TyphoonClosureTester
// causes EXC_BAD_ACCESS
closureTester1.callClosure()
但是當我調用閉包時,這會導致EXC_BAD_ACCESS
。 (確切的消息是Thread 1: EXC_BAD_ACCESS (code=1, address=0x0)
)所以它看起來像是在某處解除分配。
我已經嘗試將捕獲添加到程序集中(即[closure]
)但它沒有區別:
func testAClosure(closure: @escaping () -> Void) -> AnyObject {
return TyphoonDefinition.withClass(TyphoonClosureTester.self) { [closure] definition in
definition?.useInitializer(#selector(TyphoonClosureTester.init(closure:))) { [closure] initializer in
initializer?.injectParameter(with: closure)
}
definition?.scope = .prototype
} as AnyObject
}
我也嘗試將閉包作為屬性注入,而不是通過init,它沒有任何區別。
從內存中不支持。 您可以嘗試查看測試用例中的示例。
這里描述了注入包裹的基元: https : //github.com/appsquickly/typhoon/wiki/wrap-primitive-values-into-NSValue
。 。 但是沒有提到塊/閉包。
如果您描述了您希望實現的目標,可以建議采用下一個最佳解決方法。
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