59 lines
1.4 KiB
Swift
59 lines
1.4 KiB
Swift
//
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// PrimitiveHotObservable.swift
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// RxTests
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//
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// Created by Krunoslav Zaher on 6/4/15.
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// Copyright © 2015 Krunoslav Zaher. All rights reserved.
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//
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import Foundation
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import RxSwift
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import RxTests
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let SubscribedToHotObservable = Subscription(0)
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let UnsunscribedFromHotObservable = Subscription(0, 0)
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class PrimitiveHotObservable<ElementType> : ObservableType {
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typealias E = ElementType
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typealias Events = Recorded<E>
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typealias Observer = AnyObserver<E>
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var subscriptions: [Subscription]
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var observers: Bag<AnyObserver<E>>
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let lock = NSRecursiveLock()
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init() {
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self.subscriptions = []
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self.observers = Bag()
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}
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func on(_ event: Event<E>) {
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lock.lock()
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defer { lock.unlock() }
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observers.on(event)
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}
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func subscribe<O : ObserverType>(_ observer: O) -> Disposable where O.E == E {
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lock.lock()
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defer { lock.unlock() }
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let key = observers.insert(AnyObserver(observer))
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subscriptions.append(SubscribedToHotObservable)
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let i = self.subscriptions.count - 1
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return Disposables.create {
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self.lock.lock()
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defer { self.lock.unlock() }
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let removed = self.observers.removeKey(key)
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assert(removed != nil)
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self.subscriptions[i] = UnsunscribedFromHotObservable
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}
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}
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}
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