[英]EXC_BAD_ACCESS when injecting a closure at runtime using Typhoon
我有一个混合的ObjC和Swift iOS项目。
我有一个类用于测试在运行时注入一个简单的闭包:
@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程序集文件包含这个函数:
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
}
我尝试使用此闭包如下:
let closureTester1: TyphoonClosureTester = assembler.testAClosure(closure: {
NSLog(" closure 1 called!")
}) as! TyphoonClosureTester
// causes EXC_BAD_ACCESS
closureTester1.callClosure()
但是当我调用闭包时,这会导致EXC_BAD_ACCESS
。 (确切的消息是Thread 1: EXC_BAD_ACCESS (code=1, address=0x0)
)所以它看起来像是在某处解除分配。
我已经尝试将捕获添加到程序集中(即[closure]
)但它没有区别:
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
}
我也尝试将闭包作为属性注入,而不是通过init,它没有任何区别。
从内存中不支持。 您可以尝试查看测试用例中的示例。
这里描述了注入包裹的基元: https : //github.com/appsquickly/typhoon/wiki/wrap-primitive-values-into-NSValue
。 。 但是没有提到块/闭包。
如果您描述了您希望实现的目标,可以建议采用下一个最佳解决方法。
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