//
//  Attachable.swift
//  FaceAware
//
//  The MIT License (MIT)
//
//  Copyright (c) 2018 Beau Nouvelle
//
//  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 Foundation

internal class ClosureWrapper<T> {
    var closure: (T) -> Void
    init(_ closure: @escaping (T) -> Void) {
        self.closure = closure
    }
}

internal protocol Attachable {
    func set(_ attachObj: Any?, forKey key: inout UInt)
    func getAttach(forKey key: inout UInt) -> Any?
}

extension Attachable {

    public func set(_ attachObj: Any?, forKey key: inout UInt) {
        objc_setAssociatedObject(self, &key, attachObj, .OBJC_ASSOCIATION_RETAIN_NONATOMIC)
    }

    public func getAttach(forKey key: inout UInt) -> Any? {
        return objc_getAssociatedObject(self, &key)
    }

}
