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Pods/Kingfisher/Sources/Utility/Result.swift

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+//
+//  Result.swift
+//  Kingfisher
+//
+//  Created by onevcat on 2018/09/22.
+//
+//  Copyright (c) 2019 Wei Wang <onevcat@gmail.com>
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy
+//  of this software and associated documentation files (the "Software"), to deal
+//  in the Software without restriction, including without limitation the rights
+//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//  copies of the Software, and to permit persons to whom the Software is
+//  furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in
+//  all copies or substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+//  THE SOFTWARE.
+
+import Foundation
+
+// These helper methods are not public since we do not want them to be exposed or cause any conflicting.
+// However, they are just wrapper of `ResultUtil` static methods.
+extension Result where Failure: Error {
+
+    /// Evaluates the given transform closures to create a single output value.
+    ///
+    /// - Parameters:
+    ///   - onSuccess: A closure that transforms the success value.
+    ///   - onFailure: A closure that transforms the error value.
+    /// - Returns: A single `Output` value.
+    func match<Output>(
+        onSuccess: (Success) -> Output,
+        onFailure: (Failure) -> Output) -> Output
+    {
+        switch self {
+        case let .success(value):
+            return onSuccess(value)
+        case let .failure(error):
+            return onFailure(error)
+        }
+    }
+}