Rename various ObjC-visible classes

Foundation/Array.swift

@@ -12,7 +12,7 @@ extension Array : _ObjectiveCBridgeable {
     public typealias _ObjectType = NSArray
     public func _bridgeToObjectiveC() -> _ObjectType {
         return NSArray(array: map { (element: Element) -> AnyObject in
-            return _SwiftValue.store(element)
+            return __SwiftValue.store(element)
         })
     }
 

Foundation/Bridging.swift

@@ -70,11 +70,11 @@ internal protocol _NSBridgeable {
 
 #if !canImport(ObjectiveC)
 // The _NSSwiftValue protocol is in the stdlib, and only available on platforms without ObjC.
-extension _SwiftValue: _NSSwiftValue {}
+extension __SwiftValue: _NSSwiftValue {}
 #endif
 
 /// - Note: This is an internal boxing value for containing abstract structures
-internal final class _SwiftValue : NSObject, NSCopying {
+internal final class __SwiftValue : NSObject, NSCopying {
     public private(set) var value: Any
 
     static func fetch(_ object: AnyObject?) -> Any? {
@@ -115,7 +115,7 @@ internal final class _SwiftValue : NSObject, NSCopying {
             return type
         }
 
-        let name = "_SwiftValue"
+        let name = "__SwiftValue"
         let maybeType = name.withCString { cString in
             return objc_getClass(cString)
         }
@@ -135,7 +135,7 @@ internal final class _SwiftValue : NSObject, NSCopying {
         // You can pass the result of a `as AnyObject` expression to this method. This can have one of three results on Darwin:
         // - It's a SwiftFoundation type. Bridging will take care of it below.
         // - It's nil. The compiler is hardcoded to return [NSNull null] for nils.
-        // - It's some other Swift type. The compiler will box it in a native _SwiftValue.
+        // - It's some other Swift type. The compiler will box it in a native __SwiftValue.
         // Case 1 is handled below.
         // Case 2 is handled here:
         if type(of: object as Any) == objCNSNullClass {
@@ -145,20 +145,20 @@ internal final class _SwiftValue : NSObject, NSCopying {
         if type(of: object as Any) == swiftStdlibSwiftValueClass {
             return object
             // Since this returns Any, the object is casted almost immediately — e.g.:
-            //   _SwiftValue.fetch(x) as SomeStruct
+            //   __SwiftValue.fetch(x) as SomeStruct
             // which will immediately unbox the native box. For callers, it will be exactly
             // as if we returned the unboxed value directly.
         }
 
         // On Linux, case 2 is handled by the stdlib bridging machinery, and case 3 can't happen —
-        // the compiler will produce SwiftFoundation._SwiftValue boxes rather than ObjC ones.
+        // the compiler will produce SwiftFoundation.__SwiftValue boxes rather than ObjC ones.
         #endif
 
         if object === kCFBooleanTrue {
             return true
         } else if object === kCFBooleanFalse {
             return false
-        } else if let container = object as? _SwiftValue {
+        } else if let container = object as? __SwiftValue {
             return container.value
         } else if let val = object as? _StructBridgeable {
             return val._bridgeToAny()
@@ -188,10 +188,10 @@ internal final class _SwiftValue : NSObject, NSCopying {
             return NSNull()
         } else {
             #if canImport(ObjectiveC)
-                // On Darwin, this can be a native (ObjC) _SwiftValue.
+                // On Darwin, this can be a native (ObjC) __SwiftValue.
                 let boxed = (value as AnyObject)
                 if !(boxed is NSObject) {
-                    return _SwiftValue(value) // Do not emit native boxes — wrap them in Swift Foundation boxes instead.
+                    return __SwiftValue(value) // Do not emit native boxes — wrap them in Swift Foundation boxes instead.
                 } else {
                     return boxed as! NSObject
                 }
@@ -214,7 +214,7 @@ internal final class _SwiftValue : NSObject, NSCopying {
 
     override func isEqual(_ value: Any?) -> Bool {
         switch value {
-        case let other as _SwiftValue:
+        case let other as __SwiftValue:
             guard let left = other.value as? AnyHashable,
                 let right = self.value as? AnyHashable else { return self === other }
 
@@ -228,7 +228,7 @@ internal final class _SwiftValue : NSObject, NSCopying {
     }
 
     public func copy(with zone: NSZone?) -> Any {
-        return _SwiftValue(value)
+        return __SwiftValue(value)
     }
 
     public static let null: AnyObject = NSNull()

Foundation/Bundle.swift

@@ -276,12 +276,12 @@ open class Bundle: NSObject {
 
     open var infoDictionary: [String : Any]? {
         let cfDict: CFDictionary? = CFBundleGetInfoDictionary(_bundle)
-        return _SwiftValue.fetch(cfDict) as? [String : Any]
+        return __SwiftValue.fetch(cfDict) as? [String : Any]
     }
 
     open var localizedInfoDictionary: [String : Any]? {
         let cfDict: CFDictionary? = CFBundleGetLocalInfoDictionary(_bundle)
-        return _SwiftValue.fetch(cfDict) as? [String : Any]
+        return __SwiftValue.fetch(cfDict) as? [String : Any]
     }
 
     open func object(forInfoDictionaryKey key: String) -> Any? {
@@ -299,7 +299,7 @@ open class Bundle: NSObject {
     }
     open var localizations: [String] {
         let cfLocalizations: CFArray? = CFBundleCopyBundleLocalizations(_bundle)
-        let nsLocalizations = _SwiftValue.fetch(cfLocalizations) as? [Any]
+        let nsLocalizations = __SwiftValue.fetch(cfLocalizations) as? [Any]
         return nsLocalizations?.map { $0 as! String } ?? []
     }
 
@@ -310,7 +310,7 @@ open class Bundle: NSObject {
 
     open class func preferredLocalizations(from localizationsArray: [String]) -> [String] {
         let cfLocalizations: CFArray? = CFBundleCopyPreferredLocalizationsFromArray(localizationsArray._cfObject)
-        let nsLocalizations = _SwiftValue.fetch(cfLocalizations) as? [Any]
+        let nsLocalizations = __SwiftValue.fetch(cfLocalizations) as? [Any]
         return nsLocalizations?.map { $0 as! String } ?? []
     }
 

Foundation/Data.swift

@@ -908,20 +908,20 @@ public final class _DataStorage {
 
         switch _backing {
         case .swift:
-            return _NSSwiftData(backing: self, range: range)
+            return __NSSwiftData(backing: self, range: range)
         case .immutable(let d):
             guard range.lowerBound == 0 && range.upperBound == _length else {
-                return _NSSwiftData(backing: self, range: range)
+                return __NSSwiftData(backing: self, range: range)
             }
             return d
         case .mutable(let d):
             guard range.lowerBound == 0 && range.upperBound == _length else {
-                return _NSSwiftData(backing: self, range: range)
+                return __NSSwiftData(backing: self, range: range)
             }
             return d
         case .customReference(let d):
             guard range.lowerBound == 0 && range.upperBound == d.length else {
-                return _NSSwiftData(backing: self, range: range)
+                return __NSSwiftData(backing: self, range: range)
             }
             return d
         case .customMutableReference(let d):
@@ -944,7 +944,7 @@ public final class _DataStorage {
     }
 }
 
-internal class _NSSwiftData : NSData {
+internal class __NSSwiftData : NSData {
     var _backing: _DataStorage!
     var _range: Range<Data.Index>!
 

Foundation/Dictionary.swift

@@ -19,8 +19,8 @@ extension Dictionary : _ObjectiveCBridgeable {
         var idx = 0
 
         self.forEach { (keyItem, valueItem) in
-            let key = _SwiftValue.store(keyItem)
-            let value = _SwiftValue.store(valueItem)
+            let key = __SwiftValue.store(keyItem)
+            let value = __SwiftValue.store(valueItem)
             keyBuffer.advanced(by: idx).initialize(to: key)
             valueBuffer.advanced(by: idx).initialize(to: value)
             idx += 1
@@ -65,8 +65,8 @@ extension Dictionary : _ObjectiveCBridgeable {
             CFDictionaryGetKeysAndValues(cf, keys, values)
 
             for idx in 0..<cnt {
-                let key = _SwiftValue.fetch(nonOptional: unsafeBitCast(keys.advanced(by: idx).pointee!, to: AnyObject.self))
-                let value = _SwiftValue.fetch(nonOptional: unsafeBitCast(values.advanced(by: idx).pointee!, to: AnyObject.self))
+                let key = __SwiftValue.fetch(nonOptional: unsafeBitCast(keys.advanced(by: idx).pointee!, to: AnyObject.self))
+                let value = __SwiftValue.fetch(nonOptional: unsafeBitCast(values.advanced(by: idx).pointee!, to: AnyObject.self))
                 guard let k = key as? Key, let v = value as? Value else {
                     failedConversion = true
                     break

Foundation/HTTPCookieStorage.swift

@@ -216,7 +216,7 @@ open class HTTPCookieStorage: NSObject {
             persistDictionary[key] = cookie.persistableDictionary()
         }
 
-        let nsdict = _SwiftValue.store(persistDictionary) as! NSDictionary
+        let nsdict = __SwiftValue.store(persistDictionary) as! NSDictionary
         _ = nsdict.write(toFile: cookieFilePath, atomically: true)
     }
 

Foundation/JSONEncoder.swift

@@ -2010,7 +2010,7 @@ extension _JSONDecoder {
 
         #if DEPLOYMENT_RUNTIME_SWIFT
         // Bridging differences require us to split implementations here
-        guard let number = _SwiftValue.store(value) as? NSNumber else {
+        guard let number = __SwiftValue.store(value) as? NSNumber else {
             throw DecodingError._typeMismatch(at: self.codingPath, expectation: type, reality: value)
         }
 
@@ -2043,7 +2043,7 @@ extension _JSONDecoder {
     fileprivate func unbox(_ value: Any, as type: Int.Type) throws -> Int? {
         guard !(value is NSNull) else { return nil }
 
-        guard let number = _SwiftValue.store(value) as? NSNumber, number !== kCFBooleanTrue, number !== kCFBooleanFalse else {
+        guard let number = __SwiftValue.store(value) as? NSNumber, number !== kCFBooleanTrue, number !== kCFBooleanFalse else {
             throw DecodingError._typeMismatch(at: self.codingPath, expectation: type, reality: value)
         }
 
@@ -2058,7 +2058,7 @@ extension _JSONDecoder {
     fileprivate func unbox(_ value: Any, as type: Int8.Type) throws -> Int8? {
         guard !(value is NSNull) else { return nil }
 
-        guard let number = _SwiftValue.store(value) as? NSNumber, number !== kCFBooleanTrue, number !== kCFBooleanFalse else {
+        guard let number = __SwiftValue.store(value) as? NSNumber, number !== kCFBooleanTrue, number !== kCFBooleanFalse else {
             throw DecodingError._typeMismatch(at: self.codingPath, expectation: type, reality: value)
         }
 
@@ -2073,7 +2073,7 @@ extension _JSONDecoder {
     fileprivate func unbox(_ value: Any, as type: Int16.Type) throws -> Int16? {
         guard !(value is NSNull) else { return nil }
 
-        guard let number = _SwiftValue.store(value) as? NSNumber, number !== kCFBooleanTrue, number !== kCFBooleanFalse else {
+        guard let number = __SwiftValue.store(value) as? NSNumber, number !== kCFBooleanTrue, number !== kCFBooleanFalse else {
             throw DecodingError._typeMismatch(at: self.codingPath, expectation: type, reality: value)
         }
 
@@ -2088,7 +2088,7 @@ extension _JSONDecoder {
     fileprivate func unbox(_ value: Any, as type: Int32.Type) throws -> Int32? {
         guard !(value is NSNull) else { return nil }
 
-        guard let number = _SwiftValue.store(value) as? NSNumber, number !== kCFBooleanTrue, number !== kCFBooleanFalse else {
+        guard let number = __SwiftValue.store(value) as? NSNumber, number !== kCFBooleanTrue, number !== kCFBooleanFalse else {
             throw DecodingError._typeMismatch(at: self.codingPath, expectation: type, reality: value)
         }
 
@@ -2103,7 +2103,7 @@ extension _JSONDecoder {
     fileprivate func unbox(_ value: Any, as type: Int64.Type) throws -> Int64? {
         guard !(value is NSNull) else { return nil }
 
-        guard let number = _SwiftValue.store(value) as? NSNumber, number !== kCFBooleanTrue, number !== kCFBooleanFalse else {
+        guard let number = __SwiftValue.store(value) as? NSNumber, number !== kCFBooleanTrue, number !== kCFBooleanFalse else {
             throw DecodingError._typeMismatch(at: self.codingPath, expectation: type, reality: value)
         }
 
@@ -2118,7 +2118,7 @@ extension _JSONDecoder {
     fileprivate func unbox(_ value: Any, as type: UInt.Type) throws -> UInt? {
         guard !(value is NSNull) else { return nil }
 
-        guard let number = _SwiftValue.store(value) as? NSNumber, number !== kCFBooleanTrue, number !== kCFBooleanFalse else {
+        guard let number = __SwiftValue.store(value) as? NSNumber, number !== kCFBooleanTrue, number !== kCFBooleanFalse else {
             throw DecodingError._typeMismatch(at: self.codingPath, expectation: type, reality: value)
         }
 
@@ -2133,7 +2133,7 @@ extension _JSONDecoder {
     fileprivate func unbox(_ value: Any, as type: UInt8.Type) throws -> UInt8? {
         guard !(value is NSNull) else { return nil }
 
-        guard let number = _SwiftValue.store(value) as? NSNumber, number !== kCFBooleanTrue, number !== kCFBooleanFalse else {
+        guard let number = __SwiftValue.store(value) as? NSNumber, number !== kCFBooleanTrue, number !== kCFBooleanFalse else {
             throw DecodingError._typeMismatch(at: self.codingPath, expectation: type, reality: value)
         }
 
@@ -2148,7 +2148,7 @@ extension _JSONDecoder {
     fileprivate func unbox(_ value: Any, as type: UInt16.Type) throws -> UInt16? {
         guard !(value is NSNull) else { return nil }
 
-        guard let number = _SwiftValue.store(value) as? NSNumber, number !== kCFBooleanTrue, number !== kCFBooleanFalse else {
+        guard let number = __SwiftValue.store(value) as? NSNumber, number !== kCFBooleanTrue, number !== kCFBooleanFalse else {
             throw DecodingError._typeMismatch(at: self.codingPath, expectation: type, reality: value)
         }
 
@@ -2163,7 +2163,7 @@ extension _JSONDecoder {
     fileprivate func unbox(_ value: Any, as type: UInt32.Type) throws -> UInt32? {
         guard !(value is NSNull) else { return nil }
 
-        guard let number = _SwiftValue.store(value) as? NSNumber, number !== kCFBooleanTrue, number !== kCFBooleanFalse else {
+        guard let number = __SwiftValue.store(value) as? NSNumber, number !== kCFBooleanTrue, number !== kCFBooleanFalse else {
             throw DecodingError._typeMismatch(at: self.codingPath, expectation: type, reality: value)
         }
 
@@ -2178,7 +2178,7 @@ extension _JSONDecoder {
     fileprivate func unbox(_ value: Any, as type: UInt64.Type) throws -> UInt64? {
         guard !(value is NSNull) else { return nil }
 
-        guard let number = _SwiftValue.store(value) as? NSNumber, number !== kCFBooleanTrue, number !== kCFBooleanFalse else {
+        guard let number = __SwiftValue.store(value) as? NSNumber, number !== kCFBooleanTrue, number !== kCFBooleanFalse else {
             throw DecodingError._typeMismatch(at: self.codingPath, expectation: type, reality: value)
         }
 
@@ -2193,7 +2193,7 @@ extension _JSONDecoder {
     fileprivate func unbox(_ value: Any, as type: Float.Type) throws -> Float? {
         guard !(value is NSNull) else { return nil }
 
-        if let number = _SwiftValue.store(value) as? NSNumber, number !== kCFBooleanTrue, number !== kCFBooleanFalse {
+        if let number = __SwiftValue.store(value) as? NSNumber, number !== kCFBooleanTrue, number !== kCFBooleanFalse {
             // We are willing to return a Float by losing precision:
             // * If the original value was integral,
             //   * and the integral value was > Float.greatestFiniteMagnitude, we will fail
@@ -2238,7 +2238,7 @@ extension _JSONDecoder {
     fileprivate func unbox(_ value: Any, as type: Double.Type) throws -> Double? {
         guard !(value is NSNull) else { return nil }
 
-        if let number = _SwiftValue.store(value) as? NSNumber, number !== kCFBooleanTrue, number !== kCFBooleanFalse {
+        if let number = __SwiftValue.store(value) as? NSNumber, number !== kCFBooleanTrue, number !== kCFBooleanFalse {
             // We are always willing to return the number as a Double:
             // * If the original value was integral, it is guaranteed to fit in a Double; we are willing to lose precision past 2^53 if you encoded a UInt64 but requested a Double
             // * If it was a Float or Double, you will get back the precise value

Foundation/JSONSerialization.swift

@@ -104,7 +104,7 @@ open class JSONSerialization : NSObject {
 
             // object is NSNumber and is not NaN or infinity
             // For better performance, this (most expensive) test should be last.
-            if let number = _SwiftValue.store(obj) as? NSNumber {
+            if let number = __SwiftValue.store(obj) as? NSNumber {
                 if CFNumberIsFloatType(number._cfObject) {
                     let dv = number.doubleValue
                     let invalid = dv.isInfinite || dv.isNaN
@@ -369,8 +369,8 @@ private struct JSONWriter {
             writer(num.description)
         case is NSNull:
             try serializeNull()
-        case _ where _SwiftValue.store(obj) is NSNumber:
-            try serializeNumber(_SwiftValue.store(obj) as! NSNumber)
+        case _ where __SwiftValue.store(obj) is NSNumber:
+            try serializeNumber(__SwiftValue.store(obj) as! NSNumber)
         default:
             throw NSError(domain: NSCocoaErrorDomain, code: CocoaError.propertyListReadCorrupt.rawValue, userInfo: ["NSDebugDescription" : "Invalid object cannot be serialized"])
         }