mirror of
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43 lines
1.5 KiB
Swift
43 lines
1.5 KiB
Swift
/*
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* Atoll (DynamicIsland)
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* Copyright (C) 2024-2026 Atoll Contributors
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*
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* Originally from boring.notch project
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* Modified and adapted for Atoll (DynamicIsland)
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* See NOTICE for details.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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import Foundation
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import ObjectiveC
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public struct AssociatedObject<Value: AnyObject> {
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private let key: UnsafeRawPointer
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private let policy: objc_AssociationPolicy
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public init(_ policy: objc_AssociationPolicy = .OBJC_ASSOCIATION_RETAIN_NONATOMIC) {
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self.key = UnsafeRawPointer(Unmanaged.passUnretained(UniqueKey()).toOpaque())
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self.policy = policy
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}
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private final class UniqueKey {}
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public subscript<Owner: AnyObject>(_ owner: Owner) -> Value? {
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get { objc_getAssociatedObject(owner, key) as? Value }
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nonmutating set { objc_setAssociatedObject(owner, key, newValue, policy) }
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}
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}
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extension AssociatedObject: @unchecked Sendable where Value: Sendable {}
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