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// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this
import Foundation
public protocol DispatchGroupInterface {
func enter()
func leave()
func notify(qos: DispatchQoS,
flags: DispatchWorkItemFlags,
queue: DispatchQueue,
execute work: @escaping @convention(block) () -> Void)
func notify(qos: DispatchQoS,
flags: DispatchWorkItemFlags,
queue: DispatchQueueInterface,
execute work: @escaping @convention(block) () -> Void)
}
extension DispatchGroupInterface {
public func notify(qos: DispatchQoS = .unspecified,
flags: DispatchWorkItemFlags = [],
queue: DispatchQueue,
execute work: @escaping @convention(block) () -> Void) {
notify(qos: qos,
flags: flags,
queue: queue,
execute: work)
}
public func notify(qos: DispatchQoS = .unspecified,
flags: DispatchWorkItemFlags = [],
queue: DispatchQueueInterface,
execute work: @escaping @convention(block) () -> Void) {
notify(qos: qos,
flags: flags,
queue: queue,
execute: work)
}
}
extension DispatchGroup: DispatchGroupInterface {
public func notify(qos: DispatchQoS,
flags: DispatchWorkItemFlags,
queue: DispatchQueueInterface,
execute work: @escaping @convention(block) () -> Void) {
guard let queue = queue as? DispatchQueue else { return }
notify(qos: qos, flags: flags, queue: queue, execute: work)
}
}