Basic usage of ObjectiveCBridgeable protocol on Linux

Foundation/NSArray.swift

@@ -34,6 +34,44 @@ extension Array : _ObjectTypeBridgeable {
     }
 }
 
+extension Array : _ObjectiveCBridgeable {
+
+  public static func _isBridgedToObjectiveC() -> Bool {
+    return Swift._isBridgedToObjectiveC(Element.self)
+  }
+
+  @_semantics("convertToObjectiveC")
+  public func _bridgeToObjectiveC() -> NSArray {
+    return _bridgeToObject()
+  }
+
+  public static func _forceBridgeFromObjectiveC(
+    _ source: NSArray,
+    result: inout Array?
+  ) {
+    _forceBridgeFromObject(source, result: &result)
+  }
+
+  public static func _conditionallyBridgeFromObjectiveC(
+    _ source: NSArray,
+    result: inout Array?
+  ) -> Bool {
+    return _conditionallyBridgeFromObject(source, result: &result)
+  }
+
+  public static func _unconditionallyBridgeFromObjectiveC(
+    _ source: NSArray?
+  ) -> Array {
+    // `nil` has historically been used as a stand-in for an empty
+    // array; map it to an empty array instead of failing.
+    if _slowPath(source == nil) { return Array() }
+
+    var result:Array?
+    _forceBridgeFromObject(source!, result: &result)
+    return result!
+  }
+}
+
 public class NSArray : NSObject, NSCopying, NSMutableCopying, NSSecureCoding, NSCoding {
     private let _cfinfo = _CFInfo(typeID: CFArrayGetTypeID())
     internal var _storage = [AnyObject]()

Foundation/NSDictionary.swift

@@ -93,6 +93,45 @@ extension Dictionary : _ObjectTypeBridgeable {
     }
 }
 
+// Dictionary<Key, Value> is conditionally bridged to NSDictionary
+extension Dictionary : _ObjectiveCBridgeable {
+  @_semantics("convertToObjectiveC")
+  public func _bridgeToObjectiveC() -> NSDictionary {
+    return _bridgeToObject()
+  }
+
+  public static func _forceBridgeFromObjectiveC(
+    _ d: NSDictionary,
+    result: inout Dictionary?
+  ) {
+    _forceBridgeFromObject(d, result: &result)
+  }
+
+  public static func _conditionallyBridgeFromObjectiveC(
+    _ x: NSDictionary,
+    result: inout Dictionary?
+  ) -> Bool {
+    return _conditionallyBridgeFromObject(x, result: &result)
+  }
+
+  public static func _isBridgedToObjectiveC() -> Bool {
+    return Swift._isBridgedToObjectiveC(Key.self) &&
+           Swift._isBridgedToObjectiveC(Value.self)
+  }
+
+  public static func _unconditionallyBridgeFromObjectiveC(
+    _ d: NSDictionary?
+  ) -> Dictionary {
+    // `nil` has historically been used as a stand-in for an empty
+    // dictionary; map it to an empty dictionary.
+    if _slowPath(d == nil) { return Dictionary() }
+
+    var result:Dictionary?
+    _forceBridgeFromObject(d!, result: &result)
+    return result!
+  }
+}
+
 public class NSDictionary : NSObject, NSCopying, NSMutableCopying, NSSecureCoding, NSCoding {
     private let _cfinfo = _CFInfo(typeID: CFDictionaryGetTypeID())
     internal var _storage = [NSObject: AnyObject]()

Foundation/NSNumber.swift

@@ -48,6 +48,38 @@ extension Int : _ObjectTypeBridgeable {
     }
 }
 
+extension Int : _ObjectiveCBridgeable {
+    public static func _isBridgedToObjectiveC() -> Bool {
+        return true
+    }
+
+    @_semantics("convertToObjectiveC")
+    public func _bridgeToObjectiveC() -> NSNumber {
+        return NSNumber(integer: self)
+    }
+
+    public static func _forceBridgeFromObjectiveC(
+        _ x: NSNumber,
+        result: inout Int?
+        ) {
+        result = x.integerValue
+    }
+
+    public static func _conditionallyBridgeFromObjectiveC(
+        _ x: NSNumber,
+        result: inout Int?
+        ) -> Bool {
+        self._forceBridgeFromObjectiveC(x, result: &result)
+        return true
+    }
+
+    public static func _unconditionallyBridgeFromObjectiveC(
+        _ source: NSNumber?
+        ) -> Int {
+        return source!.integerValue
+    }
+}
+
 extension UInt : _ObjectTypeBridgeable {
     public init(_ number: NSNumber) {
         self = number.unsignedIntegerValue
@@ -66,6 +98,38 @@ extension UInt : _ObjectTypeBridgeable {
     }
 }
 
+extension UInt : _ObjectiveCBridgeable {
+    public static func _isBridgedToObjectiveC() -> Bool {
+        return true
+    }
+
+    @_semantics("convertToObjectiveC")
+    public func _bridgeToObjectiveC() -> NSNumber {
+        return NSNumber(unsignedInteger: self)
+    }
+
+    public static func _forceBridgeFromObjectiveC(
+        _ x: NSNumber,
+        result: inout UInt?
+        ) {
+        result = x.unsignedIntegerValue
+    }
+
+    public static func _conditionallyBridgeFromObjectiveC(
+        _ x: NSNumber,
+        result: inout UInt?
+        ) -> Bool {
+        self._forceBridgeFromObjectiveC(x, result: &result)
+        return true
+    }
+
+    public static func _unconditionallyBridgeFromObjectiveC(
+        _ source: NSNumber?
+        ) -> UInt {
+        return source!.unsignedIntegerValue
+    }
+}
+
 extension Float : _ObjectTypeBridgeable {
     public init(_ number: NSNumber) {
         self = number.floatValue
@@ -85,6 +149,38 @@ extension Float : _ObjectTypeBridgeable {
     }
 }
 
+extension Float : _ObjectiveCBridgeable {
+    public static func _isBridgedToObjectiveC() -> Bool {
+        return true
+    }
+
+    @_semantics("convertToObjectiveC")
+    public func _bridgeToObjectiveC() -> NSNumber {
+        return NSNumber(float: self)
+    }
+
+    public static func _forceBridgeFromObjectiveC(
+        _ x: NSNumber,
+        result: inout Float?
+        ) {
+        result = x.floatValue
+    }
+
+    public static func _conditionallyBridgeFromObjectiveC(
+        _ x: NSNumber,
+        result: inout Float?
+        ) -> Bool {
+        self._forceBridgeFromObjectiveC(x, result: &result)
+        return true
+    }
+
+    public static func _unconditionallyBridgeFromObjectiveC(
+        _ source: NSNumber?
+        ) -> Float {
+        return source!.floatValue
+    }
+}
+
 extension Double : _ObjectTypeBridgeable {
     public init(_ number: NSNumber) {
         self = number.doubleValue
@@ -104,6 +200,38 @@ extension Double : _ObjectTypeBridgeable {
     }
 }
 
+extension Double : _ObjectiveCBridgeable {
+    public static func _isBridgedToObjectiveC() -> Bool {
+        return true
+    }
+
+    @_semantics("convertToObjectiveC")
+    public func _bridgeToObjectiveC() -> NSNumber {
+        return NSNumber(double: self)
+    }
+
+    public static func _forceBridgeFromObjectiveC(
+        _ x: NSNumber,
+        result: inout Double?
+        ) {
+        result = x.doubleValue
+    }
+
+    public static func _conditionallyBridgeFromObjectiveC(
+        _ x: NSNumber,
+        result: inout Double?
+        ) -> Bool {
+        self._forceBridgeFromObjectiveC(x, result: &result)
+        return true
+    }
+
+    public static func _unconditionallyBridgeFromObjectiveC(
+        _ source: NSNumber?
+        ) -> Double {
+        return source!.doubleValue
+    }
+}
+
 extension Bool : _ObjectTypeBridgeable {
     public init(_ number: NSNumber) {
         self = number.boolValue
@@ -123,6 +251,38 @@ extension Bool : _ObjectTypeBridgeable {
     }
 }
 
+extension Bool: _ObjectiveCBridgeable {
+    public static func _isBridgedToObjectiveC() -> Bool {
+        return true
+    }
+
+    @_semantics("convertToObjectiveC")
+    public func _bridgeToObjectiveC() -> NSNumber {
+        return NSNumber(bool: self)
+    }
+
+    public static func _forceBridgeFromObjectiveC(
+        _ x: NSNumber,
+        result: inout Bool?
+        ) {
+        result = x.boolValue
+    }
+
+    public static func _conditionallyBridgeFromObjectiveC(
+        _ x: NSNumber,
+        result: inout Bool?
+        ) -> Bool {
+        self._forceBridgeFromObjectiveC(x, result: &result)
+        return true
+    }
+
+    public static func _unconditionallyBridgeFromObjectiveC(
+        _ source: NSNumber?
+        ) -> Bool {
+        return source!.boolValue
+    }
+}
+
 extension Bool : _CFBridgable {
     typealias CFType = CFBoolean
     var _cfObject: CFType {

Foundation/NSSet.swift

@@ -70,6 +70,39 @@ extension Set : _ObjectTypeBridgeable {
     }
 }
 
+// Set<Element> is conditionally bridged to NSSet
+extension Set : _ObjectiveCBridgeable {
+  @_semantics("convertToObjectiveC")
+  public func _bridgeToObjectiveC() -> NSSet {
+    return _bridgeToObject()
+  }
+
+  public static func _forceBridgeFromObjectiveC(_ s: NSSet, result: inout Set?) {
+    _forceBridgeFromObject(s, result: &result)
+  }
+
+  public static func _conditionallyBridgeFromObjectiveC(
+    _ x: NSSet, result: inout Set?
+  ) -> Bool {
+    return _conditionallyBridgeFromObject(x, result: &result)
+  }
+
+  public static func _unconditionallyBridgeFromObjectiveC(_ s: NSSet?) -> Set {
+    // `nil` has historically been used as a stand-in for an empty
+    // set; map it to an empty set.
+    if _slowPath(s == nil) { return Set() }
+
+    var result:Set?
+    _forceBridgeFromObject(s!, result: &result)
+    return result!
+  }
+
+  public static func _isBridgedToObjectiveC() -> Bool {
+    return Swift._isBridgedToObjectiveC(Element.self)
+  }
+}
+
+
 public class NSSet : NSObject, NSCopying, NSMutableCopying, NSSecureCoding, NSCoding {
     private let _cfinfo = _CFInfo(typeID: CFSetGetTypeID())
     internal var _storage: Set<NSObject>

Foundation/NSString.swift

@@ -116,6 +116,43 @@ extension String : _ObjectTypeBridgeable {
     }
 }
 
+extension String : _ObjectiveCBridgeable {
+  public static func _isBridgedToObjectiveC() -> Bool {
+    return true
+  }
+
+  @_semantics("convertToObjectiveC")
+  public func _bridgeToObjectiveC() -> NSString {
+    return _bridgeToObject()
+  }
+
+  public static func _forceBridgeFromObjectiveC(
+    _ x: NSString,
+    result: inout String?
+  ) {
+    return _forceBridgeFromObject(x, result: &result)
+  }
+
+  public static func _conditionallyBridgeFromObjectiveC(
+    _ x: NSString,
+    result: inout String?
+  ) -> Bool {
+    return _conditionallyBridgeFromObject(x, result: &result)
+  }
+
+  public static func _unconditionallyBridgeFromObjectiveC(
+    _ source: NSString?
+  ) -> String {
+    // `nil` has historically been used as a stand-in for an empty
+    // string; map it to an empty string.
+    if _slowPath(source == nil) { return String() }
+    var result:String?
+    _forceBridgeFromObject(source!, result: &result)
+    return result!
+  }
+}
+
+
 public struct NSStringCompareOptions : OptionSet {
     public let rawValue : UInt
     public init(rawValue: UInt) { self.rawValue = rawValue }