Merge pull request #37 from YuAo/master

Make SwiftCoroutine compatible with `async/await` in Swift 5.5

Author: belozierov

Sources/SwiftCoroutine/CoFuture/Core/CoFuture.swift

@@ -6,7 +6,7 @@
 //  Copyright © 2020 Alex Belozierov. All rights reserved.
 //
 
-private protocol _CoFutureCancellable: class {
+private protocol _CoFutureCancellable: AnyObject {
 
     func cancel()
 

Sources/SwiftCoroutine/CoScope/CoCancellable.swift

@@ -6,7 +6,7 @@
 //  Copyright © 2020 Alex Belozierov. All rights reserved.
 //
 
-public protocol CoCancellable: class {
+public protocol CoCancellable: AnyObject {
 
     /// Cancels the current `CoCancellable`.
     func cancel()

Sources/SwiftCoroutine/Coroutine/Coroutine/Coroutine.swift

@@ -122,7 +122,7 @@ public struct Coroutine {
         timer.schedule(deadline: .now() + time)
         defer { timer.cancel() }
         do {
-            try await {
+            try self.await {
                 timer.setEventHandler(handler: $0)
                 timer.start()
             }

Sources/SwiftCoroutine/Coroutine/CoroutineProtocol/CoroutineProtocol.swift

@@ -12,7 +12,7 @@ import Glibc
 import Darwin
 #endif
 
-@usableFromInline internal protocol CoroutineProtocol: class {
+@usableFromInline internal protocol CoroutineProtocol: AnyObject {
 
     typealias StackSize = Coroutine.StackSize