46 lines
1.3 KiB
Swift
46 lines
1.3 KiB
Swift
//
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// AddRef.swift
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// RxSwift
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//
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// Created by Junior B. on 30/10/15.
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// Copyright © 2015 Krunoslav Zaher. All rights reserved.
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//
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final class AddRefSink<O: ObserverType> : Sink<O>, ObserverType {
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typealias Element = O.E
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override init(observer: O, cancel: Cancelable) {
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super.init(observer: observer, cancel: cancel)
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}
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func on(_ event: Event<Element>) {
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switch event {
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case .next(_):
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forwardOn(event)
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case .completed, .error(_):
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forwardOn(event)
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dispose()
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}
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}
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}
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final class AddRef<Element> : Producer<Element> {
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typealias EventHandler = (Event<Element>) throws -> Void
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private let _source: Observable<Element>
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private let _refCount: RefCountDisposable
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init(source: Observable<Element>, refCount: RefCountDisposable) {
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_source = source
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_refCount = refCount
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}
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override func run<O: ObserverType>(_ observer: O, cancel: Cancelable) -> (sink: Disposable, subscription: Disposable) where O.E == Element {
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let releaseDisposable = _refCount.retain()
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let sink = AddRefSink(observer: observer, cancel: cancel)
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let subscription = Disposables.create(releaseDisposable, _source.subscribe(sink))
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return (sink: sink, subscription: subscription)
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}
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}
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