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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,97 +1,97 @@ | ||
| import Combine | ||
|
|
||
| extension Publisher where Self.Failure==Never { | ||
| /// Assigns a publisher's output to a property of an object. | ||
| /// | ||
| /// The difference between `assign(to:onWeak:)` and Combine's `assign(to:on:)` is two-fold: | ||
| /// - `assign(to:onWeak:)` doesn't set a _strong bond_ to `object`. | ||
| /// This breaks memory cycles when `object` also stores the returned cancellable (e.g. passing `self` is a common case). | ||
| /// - `assign(to:onWeak:)` cancels the upstream publisher if it detects `object` is deinitialized. | ||
| /// | ||
| /// The difference between is that a _strong bond_ is not set to the`object`. This breaks memory cycles when `object` also stores the returned cancellable (e.g. passing `self` is a common case). | ||
| /// - parameter keyPath: A key path that indicates the property to assign. | ||
| /// - parameter object: The object that contains the property. The subscriber assigns the object's property every time it receives a new value. | ||
| /// - returns: An `AnyCancellable` instance. Call `cancel()` on the instance when you no longer want the publisher to automatically assign the property. Deinitializing this instance will also cancel automatic assignment. | ||
| @_transparent public func assign<Root>(to keyPath: ReferenceWritableKeyPath<Root,Output>, onWeak object: Root) -> AnyCancellable where Root:AnyObject { | ||
| weak var cancellable: AnyCancellable? = nil | ||
| let cleanup: (Subscribers.Completion<Never>) -> Void = { _ in | ||
| cancellable?.cancel() | ||
| cancellable = nil | ||
| } | ||
|
|
||
| let subscriber = Subscribers.Sink<Output,Never>(receiveCompletion: cleanup, receiveValue: { [weak object] (value) in | ||
| guard let object = object else { return cleanup(.finished) } | ||
| object[keyPath: keyPath] = value | ||
| }) | ||
|
|
||
| let result = AnyCancellable(subscriber) | ||
| cancellable = result | ||
| self.subscribe(subscriber) | ||
| return result | ||
| } | ||
|
|
||
| /// Assigns a publisher's output to a property of an object. | ||
| /// | ||
| /// The difference between `assign(to:onUnowned:)` and Combine's `assign(to:on:)` is that a _strong bond_ is not set to the`object`. This breaks memory cycles when `object` also stores the returned cancellable (e.g. passing `self` is a common case). | ||
| /// - parameter keyPath: A key path that indicates the property to assign. | ||
| /// - parameter object: The object that contains the property. The subscriber assigns the object's property every time it receives a new value. | ||
| /// - returns: An `AnyCancellable` instance. Call `cancel()` on the instance when you no longer want the publisher to automatically assign the property. Deinitializing this instance will also cancel automatic assignment. | ||
| @_transparent public func assign<Root>(to keyPath: ReferenceWritableKeyPath<Root,Output>, onUnowned object: Root) -> AnyCancellable where Root:AnyObject { | ||
| self.sink(receiveValue: { [unowned object] (value) in | ||
| object[keyPath: keyPath] = value | ||
| }) | ||
| /// Assigns a publisher's output to a property of an object. | ||
| /// | ||
| /// The difference between `assign(to:onWeak:)` and Combine's `assign(to:on:)` is two-fold: | ||
| /// - `assign(to:onWeak:)` doesn't set a _strong bond_ to `object`. | ||
| /// This breaks memory cycles when `object` also stores the returned cancellable (e.g. passing `self` is a common case). | ||
| /// - `assign(to:onWeak:)` cancels the upstream publisher if it detects `object` is deinitialized. | ||
| /// | ||
| /// The difference between is that a _strong bond_ is not set to the`object`. This breaks memory cycles when `object` also stores the returned cancellable (e.g. passing `self` is a common case). | ||
| /// - parameter keyPath: A key path that indicates the property to assign. | ||
| /// - parameter object: The object that contains the property. The subscriber assigns the object's property every time it receives a new value. | ||
| /// - returns: An `AnyCancellable` instance. Call `cancel()` on the instance when you no longer want the publisher to automatically assign the property. Deinitializing this instance will also cancel automatic assignment. | ||
| @_transparent public func assign<Root>(to keyPath: ReferenceWritableKeyPath<Root,Output>, onWeak object: Root) -> AnyCancellable where Root:AnyObject { | ||
| weak var cancellable: AnyCancellable? = nil | ||
| let cleanup: (Subscribers.Completion<Never>) -> Void = { _ in | ||
| cancellable?.cancel() | ||
| cancellable = nil | ||
| } | ||
|
|
||
| let subscriber = Subscribers.Sink<Output,Never>(receiveCompletion: cleanup, receiveValue: { [weak object] (value) in | ||
| guard let object = object else { return cleanup(.finished) } | ||
| object[keyPath: keyPath] = value | ||
| }) | ||
|
|
||
| let result = AnyCancellable(subscriber) | ||
| cancellable = result | ||
| self.subscribe(subscriber) | ||
| return result | ||
| } | ||
|
|
||
| /// Assigns a publisher's output to a property of an object. | ||
| /// | ||
| /// The difference between `assign(to:onUnowned:)` and Combine's `assign(to:on:)` is that a _strong bond_ is not set to the`object`. This breaks memory cycles when `object` also stores the returned cancellable (e.g. passing `self` is a common case). | ||
| /// - parameter keyPath: A key path that indicates the property to assign. | ||
| /// - parameter object: The object that contains the property. The subscriber assigns the object's property every time it receives a new value. | ||
| /// - returns: An `AnyCancellable` instance. Call `cancel()` on the instance when you no longer want the publisher to automatically assign the property. Deinitializing this instance will also cancel automatic assignment. | ||
| @_transparent public func assign<Root>(to keyPath: ReferenceWritableKeyPath<Root,Output>, onUnowned object: Root) -> AnyCancellable where Root:AnyObject { | ||
| self.sink(receiveValue: { [unowned object] (value) in | ||
| object[keyPath: keyPath] = value | ||
| }) | ||
| } | ||
| } | ||
|
|
||
| extension Publisher where Self.Failure==Never { | ||
| /// Invoke on the given instance the specified method. | ||
| /// - remark: A strong bond is set to `instance`. If you store the cancellable in the same instance as `instance`, a memory cycle will be created. | ||
| /// - parameter method: A method/function metatype. | ||
| /// - parameter instance: The instance defining the specified method. | ||
| /// - returns: An `AnyCancellable` instance. Call `cancel()` on the instance when you no longer want the publisher to automatically call the method. Deinitializing this instance will also cancel automatic invocation. | ||
| @_transparent public func invoke<Root>(_ method: @escaping (Root)->(Output)->Void, on instance: Root) -> AnyCancellable { | ||
| return self.sink(receiveValue: { (value) in | ||
| method(instance)(value) | ||
| }) | ||
| } | ||
|
|
||
| /// Invoke on the given instance the specified method. | ||
| /// | ||
| /// The difference between `invoke(_:onWeak:)` and Combine's `invoke(_:on:)` is two-fold: | ||
| /// - `invoke(_:onWeak:)` doesn't set a _strong bond_ to `object`. | ||
| /// This breaks memory cycles when `object` also stores the returned cancellable (e.g. passing `self` is a common case). | ||
| /// - `invoke(_:onWeak:)` cancels the upstream publisher if it detects `object` is deinitialized. | ||
| /// | ||
| /// - parameter method: A method/function metatype. | ||
| /// - parameter instance: The instance defining the specified method. | ||
| /// - returns: An `AnyCancellable` instance. Call `cancel()` on the instance when you no longer want the publisher to automatically call the method. Deinitializing this instance will also cancel automatic invocation. | ||
| @_transparent public func invoke<Root>(_ method: @escaping (Root)->(Output)->Void, onWeak object: Root) -> AnyCancellable where Root:AnyObject { | ||
| weak var cancellable: AnyCancellable? = nil | ||
| let cleanup: (Subscribers.Completion<Never>) -> Void = { _ in | ||
| cancellable?.cancel() | ||
| cancellable = nil | ||
| } | ||
|
|
||
| let subscriber = Subscribers.Sink<Output,Never>(receiveCompletion: cleanup, receiveValue: { [weak object] (value) in | ||
| guard let object = object else { return cleanup(.finished) } | ||
| method(object)(value) | ||
| }) | ||
|
|
||
| let result = AnyCancellable(subscriber) | ||
| cancellable = result | ||
| self.subscribe(subscriber) | ||
| return result | ||
| } | ||
|
|
||
| /// Invoke on the given instance the specified method. | ||
| /// | ||
| /// The difference between `invoke(_:onUnowned:)` and Combine's `invoke(_:on:)` is that a _strong bond_ is not set to the`object`. This breaks memory cycles when `object` also stores the returned cancellable (e.g. passing `self` is a common case). | ||
| /// - parameter method: A method/function metatype. | ||
| /// - parameter instance: The instance defining the specified method. | ||
| /// - returns: An `AnyCancellable` instance. Call `cancel()` on the instance when you no longer want the publisher to automatically call the method. Deinitializing this instance will also cancel automatic invocation. | ||
| @_transparent public func invoke<Root>(_ method: @escaping (Root)->(Output)->Void, onUnowned object: Root) -> AnyCancellable where Root:AnyObject { | ||
| return self.sink(receiveValue: { [unowned object] (value) in | ||
| method(object)(value) | ||
| }) | ||
| /// Invoke on the given instance the specified method. | ||
| /// - remark: A strong bond is set to `instance`. If you store the cancellable in the same instance as `instance`, a memory cycle will be created. | ||
| /// - parameter method: A method/function metatype. | ||
| /// - parameter instance: The instance defining the specified method. | ||
| /// - returns: An `AnyCancellable` instance. Call `cancel()` on the instance when you no longer want the publisher to automatically call the method. Deinitializing this instance will also cancel automatic invocation. | ||
| @_transparent public func invoke<Root>(_ method: @escaping (Root)->(Output)->Void, on instance: Root) -> AnyCancellable { | ||
| self.sink(receiveValue: { (value) in | ||
| method(instance)(value) | ||
| }) | ||
| } | ||
|
|
||
| /// Invoke on the given instance the specified method. | ||
| /// | ||
| /// The difference between `invoke(_:onWeak:)` and Combine's `invoke(_:on:)` is two-fold: | ||
| /// - `invoke(_:onWeak:)` doesn't set a _strong bond_ to `object`. | ||
| /// This breaks memory cycles when `object` also stores the returned cancellable (e.g. passing `self` is a common case). | ||
| /// - `invoke(_:onWeak:)` cancels the upstream publisher if it detects `object` is deinitialized. | ||
| /// | ||
| /// - parameter method: A method/function metatype. | ||
| /// - parameter instance: The instance defining the specified method. | ||
| /// - returns: An `AnyCancellable` instance. Call `cancel()` on the instance when you no longer want the publisher to automatically call the method. Deinitializing this instance will also cancel automatic invocation. | ||
| @_transparent public func invoke<Root>(_ method: @escaping (Root)->(Output)->Void, onWeak object: Root) -> AnyCancellable where Root:AnyObject { | ||
| weak var cancellable: AnyCancellable? = nil | ||
| let cleanup: (Subscribers.Completion<Never>) -> Void = { _ in | ||
| cancellable?.cancel() | ||
| cancellable = nil | ||
| } | ||
|
|
||
| let subscriber = Subscribers.Sink<Output,Never>(receiveCompletion: cleanup, receiveValue: { [weak object] (value) in | ||
| guard let object = object else { return cleanup(.finished) } | ||
| method(object)(value) | ||
| }) | ||
|
|
||
| let result = AnyCancellable(subscriber) | ||
| cancellable = result | ||
| self.subscribe(subscriber) | ||
| return result | ||
| } | ||
|
|
||
| /// Invoke on the given instance the specified method. | ||
| /// | ||
| /// The difference between `invoke(_:onUnowned:)` and Combine's `invoke(_:on:)` is that a _strong bond_ is not set to the`object`. This breaks memory cycles when `object` also stores the returned cancellable (e.g. passing `self` is a common case). | ||
| /// - parameter method: A method/function metatype. | ||
| /// - parameter instance: The instance defining the specified method. | ||
| /// - returns: An `AnyCancellable` instance. Call `cancel()` on the instance when you no longer want the publisher to automatically call the method. Deinitializing this instance will also cancel automatic invocation. | ||
| @_transparent public func invoke<Root>(_ method: @escaping (Root)->(Output)->Void, onUnowned object: Root) -> AnyCancellable where Root:AnyObject { | ||
| self.sink(receiveValue: { [unowned object] (value) in | ||
| method(object)(value) | ||
| }) | ||
| } | ||
| } |
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Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,12 +1,12 @@ | ||
| import Combine | ||
|
|
||
| extension Publisher { | ||
| /// Performs the specified closure when the publisher completes (whether successfully or with a failure) or when the publisher gets cancelled. | ||
| /// | ||
| /// The closure will get executed exactly once. | ||
| /// - parameter handle: A closure that executes when the publisher receives a completion event or when the publisher gets cancelled. | ||
| /// - parameter completion: A completion event if the publisher completes (whether successfully or not), or `nil` in case the publisher is cancelled. | ||
| @inlinable public func handleEnd(_ handle: @escaping (_ completion: Subscribers.Completion<Failure>?)->Void) -> Publishers.HandleEnd<Self> { | ||
| .init(upstream: self, handle: handle) | ||
| } | ||
| /// Performs the specified closure when the publisher completes (whether successfully or with a failure) or when the publisher gets cancelled. | ||
| /// | ||
| /// The closure will get executed exactly once. | ||
| /// - parameter handle: A closure that executes when the publisher receives a completion event or when the publisher gets cancelled. | ||
| /// - parameter completion: A completion event if the publisher completes (whether successfully or not), or `nil` in case the publisher is cancelled. | ||
| @inlinable public func handleEnd(_ handle: @escaping (_ completion: Subscribers.Completion<Failure>?)->Void) -> Publishers.HandleEnd<Self> { | ||
| .init(upstream: self, handle: handle) | ||
| } | ||
| } |
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