Fix or report all current smaller Swiftlint warnings in xcode

1 files changed, 35 insertions, 0 deletions

diff --git a/ios/Operations/OperationBlockObserverSupport.swift b/ios/Operations/OperationBlockObserverSupport.swift
new file mode 100644
index 0000000000..196adee763
--- /dev/null
+++ b/ios/Operations/OperationBlockObserverSupport.swift
@@ -0,0 +1,35 @@
+//
+//  OperationBlockObserverSupport.swift
+//  Operations
+//
+//  Created by Jon Petersson on 2023-09-07.
+//  Copyright © 2023 Mullvad VPN AB. All rights reserved.
+//
+
+import Foundation
+
+public protocol OperationBlockObserverSupport {}
+
+extension OperationBlockObserverSupport where Self: AsyncOperation {
+    /// Add observer responding to cancellation event.
+    public func onCancel(_ fn: @escaping (Self) -> Void) {
+        addBlockObserver(OperationBlockObserver(didCancel: fn))
+    }
+
+    /// Add observer responding to finish event.
+    public func onFinish(_ fn: @escaping (Self, Error?) -> Void) {
+        addBlockObserver(OperationBlockObserver(didFinish: fn))
+    }
+
+    /// Add observer responding to start event.
+    public func onStart(_ fn: @escaping (Self) -> Void) {
+        addBlockObserver(OperationBlockObserver(didStart: fn))
+    }
+
+    /// Add block-based observer.
+    public func addBlockObserver(_ observer: OperationBlockObserver<Self>) {
+        addObserver(observer)
+    }
+
+    // swiftlint:disable:next file_length
+}