29 lines
828 B
Swift
29 lines
828 B
Swift
//
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// Copyright 2017 Signal Messenger, LLC
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// SPDX-License-Identifier: AGPL-3.0-only
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//
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import Foundation
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public class SwiftSingletons {
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private static let shared = SwiftSingletons()
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private var registeredTypes = Set<ObjectIdentifier>()
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public func register(_ singleton: AnyObject) {
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assert({
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guard !CurrentAppContext().isRunningTests else {
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// Allow multiple registrations while tests are running.
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return true
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}
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let singletonTypeIdentifier = ObjectIdentifier(type(of: singleton))
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let (justAdded, _) = registeredTypes.insert(singletonTypeIdentifier)
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return justAdded
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}(), "Duplicate singleton.")
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}
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public static func register(_ singleton: AnyObject) {
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shared.register(singleton)
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}
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}
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