Error handling: Introduce a WireGuardResult type to handle errors in callbacks across the app

Signed-off-by: Roopesh Chander <roop@roopc.net>

1 files changed, 28 insertions, 0 deletions

diff --git a/WireGuard/WireGuard/WireGuardResult.swift b/WireGuard/WireGuard/WireGuardResult.swift
new file mode 100644
index 0000000..93fc4c2
--- /dev/null
+++ b/WireGuard/WireGuard/WireGuardResult.swift
@@ -0,0 +1,28 @@
+// SPDX-License-Identifier: MIT
+// Copyright © 2018 WireGuard LLC. All Rights Reserved.
+
+enum WireGuardResult<T> {
+    case success(T)
+    case failure(WireGuardAppError)
+
+    var value: T? {
+        switch (self) {
+        case .success(let v): return v
+        case .failure(_): return nil
+        }
+    }
+
+    var error: WireGuardAppError? {
+        switch (self) {
+        case .success(_): return nil
+        case .failure(let e): return e
+        }
+    }
+
+    var isSuccess: Bool {
+        switch (self) {
+        case .success(_): return true
+        case .failure(_): return false
+        }
+    }
+}