LeadKit/TIFoundationUtils/UserDefaultsBackingStore/Sources/UserDefaultsBackingStore.swift

70 lines
2.7 KiB
Swift

//
// Copyright (c) 2021 Touch Instinct
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the Software), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED AS IS, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
//
import TISwiftUtils
import Foundation
public typealias UserDefaultsBackingStore<T> = BackingStore<UserDefaults, T>
public extension BackingStore where Store: UserDefaults {
typealias GetValueByRawKeyClosure = (Store, String) -> StoreContent
typealias SetValueByRawKeyClosure = (Store, StoreContent, String) -> Void
init<Value>(key: StorageKey<Value>,
userDefaultsStorage: Store,
getClosure: @escaping GetValueByRawKeyClosure,
setClosure: @escaping SetValueByRawKeyClosure)
where StoreContent == Value? {
self.init(store: userDefaultsStorage,
getClosure: {
guard $0.object(forKey: key.rawValue) != nil else {
return nil
}
return getClosure($0, key.rawValue)
},
setClosure: {
setClosure($0, $1, key.rawValue)
})
}
init(wrappedValue: StoreContent,
key: StorageKey<StoreContent>,
userDefaultsStorage: Store,
getClosure: @escaping GetValueByRawKeyClosure,
setClosure: @escaping SetValueByRawKeyClosure) {
self.init(store: userDefaultsStorage,
getClosure: {
guard $0.object(forKey: key.rawValue) != nil else {
return wrappedValue
}
return getClosure($0, key.rawValue)
},
setClosure: {
setClosure($0, $1, key.rawValue)
})
}
}