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Pods/Kingfisher/Sources/General/Kingfisher.swift

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+//
+//  Kingfisher.swift
+//  Kingfisher
+//
+//  Created by Wei Wang on 16/9/14.
+//
+//  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
+import ImageIO
+
+#if os(macOS)
+import AppKit
+public typealias KFCrossPlatformImage = NSImage
+public typealias KFCrossPlatformView = NSView
+public typealias KFCrossPlatformColor = NSColor
+public typealias KFCrossPlatformImageView = NSImageView
+public typealias KFCrossPlatformButton = NSButton
+#else
+import UIKit
+public typealias KFCrossPlatformImage = UIImage
+public typealias KFCrossPlatformColor = UIColor
+#if !os(watchOS)
+public typealias KFCrossPlatformImageView = UIImageView
+public typealias KFCrossPlatformView = UIView
+public typealias KFCrossPlatformButton = UIButton
+#if canImport(TVUIKit)
+import TVUIKit
+#endif
+#if canImport(CarPlay) && !targetEnvironment(macCatalyst)
+import CarPlay
+#endif
+#else
+import WatchKit
+#endif
+#endif
+
+/// Wrapper for Kingfisher compatible types. This type provides an extension point for
+/// convenience methods in Kingfisher.
+public struct KingfisherWrapper<Base> {
+    public let base: Base
+    public init(_ base: Base) {
+        self.base = base
+    }
+}
+
+/// Represents an object type that is compatible with Kingfisher. You can use `kf` property to get a
+/// value in the namespace of Kingfisher.
+public protocol KingfisherCompatible: AnyObject { }
+
+/// Represents a value type that is compatible with Kingfisher. You can use `kf` property to get a
+/// value in the namespace of Kingfisher.
+public protocol KingfisherCompatibleValue {}
+
+extension KingfisherCompatible {
+    /// Gets a namespace holder for Kingfisher compatible types.
+    public var kf: KingfisherWrapper<Self> {
+        get { return KingfisherWrapper(self) }
+        set { }
+    }
+}
+
+extension KingfisherCompatibleValue {
+    /// Gets a namespace holder for Kingfisher compatible types.
+    public var kf: KingfisherWrapper<Self> {
+        get { return KingfisherWrapper(self) }
+        set { }
+    }
+}
+
+extension KFCrossPlatformImage: KingfisherCompatible { }
+#if !os(watchOS)
+extension KFCrossPlatformImageView: KingfisherCompatible { }
+extension KFCrossPlatformButton: KingfisherCompatible { }
+extension NSTextAttachment: KingfisherCompatible { }
+#else
+extension WKInterfaceImage: KingfisherCompatible { }
+#endif
+
+#if os(tvOS) && canImport(TVUIKit)
+@available(tvOS 12.0, *)
+extension TVMonogramView: KingfisherCompatible { }
+#endif
+
+#if canImport(CarPlay) && !targetEnvironment(macCatalyst)
+@available(iOS 14.0, *)
+extension CPListItem: KingfisherCompatible { }
+#endif