mirror of
https://github.com/RevenueCat/purchases-ios
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aboedo
f5697de730
* renamed `Purchases` folder to `Sources` * temporarily enabling installation test jobs * re-disabling installation test jobs
48 lines
1.5 KiB
Swift
48 lines
1.5 KiB
Swift
//
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// Copyright RevenueCat Inc. All Rights Reserved.
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//
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// Licensed under the MIT License (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// https://opensource.org/licenses/MIT
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//
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// SynchronizedUserDefaults.swift
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//
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// Created by Nacho Soto on 11/20/21.
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import Foundation
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/// A `UserDefaults` wrapper to synchronize access and writes.
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///
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/// - SeeAlso: `Atomic`.
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internal class SynchronizedUserDefaults {
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private let atomic: Atomic<UserDefaults>
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init(userDefaults: UserDefaults) {
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self.atomic = .init(userDefaults)
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}
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func read<T>(_ action: (UserDefaults) throws -> T) rethrows -> T {
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return try self.atomic.withValue {
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return try action($0)
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}
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}
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func write(_ action: (UserDefaults) throws -> Void) rethrows {
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return try self.atomic.withValue {
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try action($0)
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// While Apple states `this method is unnecessary and shouldn't be used`
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// https://developer.apple.com/documentation/foundation/userdefaults/1414005-synchronize
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// It didn't become unnecessary until iOS 12 and macOS 10.14 (Mojave):
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// https://developer.apple.com/documentation/macos-release-notes/foundation-release-notes
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// there are reports it is still needed if you save to defaults then immediately kill the app.
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// Also, it has not been marked deprecated... yet.
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$0.synchronize()
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}
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}
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}
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