MainThreadRunnerType.runOnMain

MainThreadRunnerType.swift

import UIKit

// MARK: - MainThreadRunnerType
protocol MainThreadRunnerType {
    func runOnMain(_ block: @escaping  () -> Void) // if not on main thread then run block asynchronously
    func runOnMainWeakly<Object: AnyObject, T>(_ obj: Object,
                                               parameter: T,
                                               method: @escaping ((Object) -> (T) -> Void))
    func runOnMainWeakly<Object: AnyObject>(_ obj: Object,
                                            method: @escaping ((Object) -> () -> Void))
}

extension MainThreadRunnerType {
    func runOnMain(_ block: @escaping () -> Void) {
        guard Thread.isMainThread else {
            DispatchQueue.main.async(execute: block)
            return
        }
        block()
    }
}