Move UIImage creation to a tryMake extension

grav0211 · Oct 6, 2022 · 31f80b7 · 31f80b7
1 parent f59e4ae
commit 31f80b7
Showing 1 changed file with 12 additions and 7 deletions.
diff --git a/EssentialApp/EssentialApp/FeedViewAdapter.swift b/EssentialApp/EssentialApp/FeedViewAdapter.swift
@@ -34,16 +34,21 @@ final class FeedViewAdapter: ResourceView {
                 resourceView: WeakRefVirtualProxy(view),
                 loadingView: WeakRefVirtualProxy(view),
                 errorView: WeakRefVirtualProxy(view),
-                mapper: { data in
-                    guard let image = UIImage(data: data) else {
-                        throw InvalidImageData()
-                    }
-                    return image
-                })
+                mapper: UIImage.tryMake
+            )
 
             return view
         })
     }
 }
 
-private struct InvalidImageData: Error {}
+extension UIImage {
+    struct InvalidImageData: Error {}
+
+    static func tryMake(data: Data) throws -> UIImage {
+        guard let image = UIImage(data: data) else {
+            throw InvalidImageData()
+        }
+        return image
+    }
+}