| // This source file is part of the Swift.org open source project |
| // |
| // Copyright (c) 2014 - 2016 Apple Inc. and the Swift project authors |
| // Licensed under Apache License v2.0 with Runtime Library Exception |
| // |
| // See http://swift.org/LICENSE.txt for license information |
| // See http://swift.org/CONTRIBUTORS.txt for the list of Swift project authors |
| // |
| |
| |
| import CoreFoundation |
| |
| #if os(OSX) || os(iOS) |
| internal let kCFNumberSInt8Type = CFNumberType.sInt8Type |
| internal let kCFNumberSInt16Type = CFNumberType.sInt16Type |
| internal let kCFNumberSInt32Type = CFNumberType.sInt32Type |
| internal let kCFNumberSInt64Type = CFNumberType.sInt64Type |
| internal let kCFNumberFloat32Type = CFNumberType.float32Type |
| internal let kCFNumberFloat64Type = CFNumberType.float64Type |
| internal let kCFNumberCharType = CFNumberType.charType |
| internal let kCFNumberShortType = CFNumberType.shortType |
| internal let kCFNumberIntType = CFNumberType.intType |
| internal let kCFNumberLongType = CFNumberType.longType |
| internal let kCFNumberLongLongType = CFNumberType.longLongType |
| internal let kCFNumberFloatType = CFNumberType.floatType |
| internal let kCFNumberDoubleType = CFNumberType.doubleType |
| internal let kCFNumberCFIndexType = CFNumberType.cfIndexType |
| internal let kCFNumberNSIntegerType = CFNumberType.nsIntegerType |
| internal let kCFNumberCGFloatType = CFNumberType.cgFloatType |
| internal let kCFNumberSInt128Type = CFNumberType(rawValue: 17)! |
| #else |
| internal let kCFNumberSInt128Type: CFNumberType = 17 |
| #endif |
| |
| extension Int : _ObjectTypeBridgeable { |
| public init(_ number: NSNumber) { |
| self = number.intValue |
| } |
| |
| public typealias _ObjectType = NSNumber |
| public func _bridgeToObjectiveC() -> _ObjectType { |
| return NSNumber(value: self) |
| } |
| |
| static public func _forceBridgeFromObjectiveC(_ source: _ObjectType, result: inout Int?) { |
| result = _unconditionallyBridgeFromObjectiveC(source) |
| } |
| |
| @discardableResult |
| static public func _conditionallyBridgeFromObjectiveC(_ source: _ObjectType, result: inout Int?) -> Bool { |
| result = source.intValue |
| return true |
| } |
| |
| static public func _unconditionallyBridgeFromObjectiveC(_ source: _ObjectType?) -> Int { |
| if let object = source { |
| var value: Int? |
| _conditionallyBridgeFromObjectiveC(object, result: &value) |
| return value! |
| } else { |
| return 0 |
| } |
| } |
| } |
| |
| extension UInt : _ObjectTypeBridgeable { |
| public init(_ number: NSNumber) { |
| self = number.uintValue |
| } |
| |
| public typealias _ObjectType = NSNumber |
| public func _bridgeToObjectiveC() -> _ObjectType { |
| return NSNumber(value: self) |
| } |
| |
| static public func _forceBridgeFromObjectiveC(_ source: _ObjectType, result: inout UInt?) { |
| result = _unconditionallyBridgeFromObjectiveC(source) |
| } |
| |
| @discardableResult |
| static public func _conditionallyBridgeFromObjectiveC(_ source: _ObjectType, result: inout UInt?) -> Bool { |
| result = source.uintValue |
| return true |
| } |
| |
| static public func _unconditionallyBridgeFromObjectiveC(_ source: _ObjectType?) -> UInt { |
| if let object = source { |
| var value: UInt? |
| _conditionallyBridgeFromObjectiveC(object, result: &value) |
| return value! |
| } else { |
| return 0 |
| } |
| } |
| } |
| |
| extension Float : _ObjectTypeBridgeable { |
| public init(_ number: NSNumber) { |
| self = number.floatValue |
| } |
| |
| public typealias _ObjectType = NSNumber |
| public func _bridgeToObjectiveC() -> _ObjectType { |
| return NSNumber(value: self) |
| } |
| |
| static public func _forceBridgeFromObjectiveC(_ source: _ObjectType, result: inout Float?) { |
| result = _unconditionallyBridgeFromObjectiveC(source) |
| } |
| |
| @discardableResult |
| static public func _conditionallyBridgeFromObjectiveC(_ source: _ObjectType, result: inout Float?) -> Bool { |
| result = source.floatValue |
| return true |
| } |
| |
| static public func _unconditionallyBridgeFromObjectiveC(_ source: _ObjectType?) -> Float { |
| if let object = source { |
| var value: Float? |
| _conditionallyBridgeFromObjectiveC(object, result: &value) |
| return value! |
| } else { |
| return 0.0 |
| } |
| } |
| } |
| |
| extension Double : _ObjectTypeBridgeable { |
| public init(_ number: NSNumber) { |
| self = number.doubleValue |
| } |
| |
| public typealias _ObjectType = NSNumber |
| public func _bridgeToObjectiveC() -> _ObjectType { |
| return NSNumber(value: self) |
| } |
| |
| static public func _forceBridgeFromObjectiveC(_ source: _ObjectType, result: inout Double?) { |
| result = _unconditionallyBridgeFromObjectiveC(source) |
| } |
| |
| @discardableResult |
| static public func _conditionallyBridgeFromObjectiveC(_ source: _ObjectType, result: inout Double?) -> Bool { |
| result = source.doubleValue |
| return true |
| } |
| |
| static public func _unconditionallyBridgeFromObjectiveC(_ source: _ObjectType?) -> Double { |
| if let object = source { |
| var value: Double? |
| _conditionallyBridgeFromObjectiveC(object, result: &value) |
| return value! |
| } else { |
| return 0.0 |
| } |
| } |
| } |
| |
| extension Bool : _ObjectTypeBridgeable { |
| public init(_ number: NSNumber) { |
| self = number.boolValue |
| } |
| |
| public typealias _ObjectType = NSNumber |
| public func _bridgeToObjectiveC() -> _ObjectType { |
| return unsafeBitCast(self ? kCFBooleanTrue : kCFBooleanFalse, to: NSNumber.self) |
| } |
| |
| static public func _forceBridgeFromObjectiveC(_ source: _ObjectType, result: inout Bool?) { |
| result = _unconditionallyBridgeFromObjectiveC(source) |
| } |
| |
| @discardableResult |
| static public func _conditionallyBridgeFromObjectiveC(_ source: _ObjectType, result: inout Bool?) -> Bool { |
| result = source.boolValue |
| return true |
| } |
| |
| static public func _unconditionallyBridgeFromObjectiveC(_ source: _ObjectType?) -> Bool { |
| if let object = source { |
| var value: Bool? |
| _conditionallyBridgeFromObjectiveC(object, result: &value) |
| return value! |
| } else { |
| return false |
| } |
| } |
| } |
| |
| extension Bool : _CFBridgeable { |
| typealias CFType = CFBoolean |
| var _cfObject: CFType { |
| return self ? kCFBooleanTrue : kCFBooleanFalse |
| } |
| } |
| |
| extension NSNumber : ExpressibleByFloatLiteral, ExpressibleByIntegerLiteral, ExpressibleByBooleanLiteral { |
| |
| } |
| |
| private struct CFSInt128Struct { |
| var high: Int64 |
| var low: UInt64 |
| } |
| |
| open class NSNumber : NSValue { |
| typealias CFType = CFNumber |
| // This layout MUST be the same as CFNumber so that they are bridgeable |
| private var _base = _CFInfo(typeID: CFNumberGetTypeID()) |
| private var _pad: UInt64 = 0 |
| |
| internal var _cfObject: CFType { |
| return unsafeBitCast(self, to: CFType.self) |
| } |
| |
| open override var hash: Int { |
| return Int(bitPattern: CFHash(_cfObject)) |
| } |
| |
| open override func isEqual(_ value: Any?) -> Bool { |
| switch value { |
| case let other as Int: |
| return intValue == other |
| case let other as Double: |
| return doubleValue == other |
| case let other as Bool: |
| return boolValue == other |
| case let other as NSNumber: |
| return CFEqual(_cfObject, other._cfObject) |
| default: |
| return false |
| } |
| } |
| |
| open override var objCType: UnsafePointer<Int8> { |
| func _objCType(_ staticString: StaticString) -> UnsafePointer<Int8> { |
| return UnsafeRawPointer(staticString.utf8Start).assumingMemoryBound(to: Int8.self) |
| } |
| let numberType = _CFNumberGetType2(_cfObject) |
| switch numberType { |
| case kCFNumberSInt8Type: |
| return _objCType("c") |
| case kCFNumberSInt16Type: |
| return _objCType("s") |
| case kCFNumberSInt32Type: |
| return _objCType("i") |
| case kCFNumberSInt64Type: |
| return _objCType("q") |
| case kCFNumberFloat32Type: |
| return _objCType("f") |
| case kCFNumberFloat64Type: |
| return _objCType("d") |
| case kCFNumberSInt128Type: |
| return _objCType("Q") |
| default: |
| fatalError("unsupported CFNumberType: '\(numberType)'") |
| } |
| } |
| |
| deinit { |
| _CFDeinit(self) |
| } |
| |
| private convenience init(bytes: UnsafeRawPointer, numberType: CFNumberType) { |
| let cfnumber = CFNumberCreate(nil, numberType, bytes) |
| self.init(factory: { unsafeBitCast(cfnumber, to: NSNumber.self) }) |
| } |
| |
| public convenience init(value: Int8) { |
| var value = value |
| self.init(bytes: &value, numberType: kCFNumberSInt8Type) |
| } |
| |
| public convenience init(value: UInt8) { |
| var value = Int16(value) |
| self.init(bytes: &value, numberType: kCFNumberSInt16Type) |
| } |
| |
| public convenience init(value: Int16) { |
| var value = value |
| self.init(bytes: &value, numberType: kCFNumberSInt16Type) |
| } |
| |
| public convenience init(value: UInt16) { |
| var value = Int32(value) |
| self.init(bytes: &value, numberType: kCFNumberSInt32Type) |
| } |
| |
| public convenience init(value: Int32) { |
| var value = value |
| self.init(bytes: &value, numberType: kCFNumberSInt32Type) |
| } |
| |
| public convenience init(value: UInt32) { |
| var value = Int64(value) |
| self.init(bytes: &value, numberType: kCFNumberSInt64Type) |
| } |
| |
| public convenience init(value: Int) { |
| var value = value |
| #if arch(x86_64) || arch(arm64) || arch(s390x) || arch(powerpc64) || arch(powerpc64le) |
| self.init(bytes: &value, numberType: kCFNumberSInt64Type) |
| #elseif arch(i386) || arch(arm) |
| self.init(bytes: &value, numberType: kCFNumberSInt32Type) |
| #endif |
| } |
| |
| public convenience init(value: UInt) { |
| #if arch(x86_64) || arch(arm64) || arch(s390x) || arch(powerpc64) || arch(powerpc64le) |
| if value > UInt64(Int64.max) { |
| var value = CFSInt128Struct(high: 0, low: UInt64(value)) |
| self.init(bytes: &value, numberType: kCFNumberSInt128Type) |
| } else { |
| var value = Int64(value) |
| self.init(bytes: &value, numberType: kCFNumberSInt64Type) |
| } |
| #elseif arch(i386) || arch(arm) |
| var value = Int64(value) |
| self.init(bytes: &value, numberType: kCFNumberSInt64Type) |
| #endif |
| } |
| |
| public convenience init(value: Int64) { |
| var value = value |
| self.init(bytes: &value, numberType: kCFNumberSInt64Type) |
| } |
| |
| public convenience init(value: UInt64) { |
| if value > UInt64(Int64.max) { |
| var value = CFSInt128Struct(high: 0, low: UInt64(value)) |
| self.init(bytes: &value, numberType: kCFNumberSInt128Type) |
| } else { |
| var value = Int64(value) |
| self.init(bytes: &value, numberType: kCFNumberSInt64Type) |
| } |
| } |
| |
| public convenience init(value: Float) { |
| var value = value |
| self.init(bytes: &value, numberType: kCFNumberFloatType) |
| } |
| |
| public convenience init(value: Double) { |
| var value = value |
| self.init(bytes: &value, numberType: kCFNumberDoubleType) |
| } |
| |
| public convenience init(value: Bool) { |
| self.init(factory: value._bridgeToObjectiveC) |
| } |
| |
| override internal init() { |
| super.init() |
| } |
| |
| public required convenience init(bytes buffer: UnsafeRawPointer, objCType: UnsafePointer<Int8>) { |
| guard let type = _NSSimpleObjCType(UInt8(objCType.pointee)) else { |
| fatalError("NSNumber.init: unsupported type encoding spec '\(String(cString: objCType))'") |
| } |
| switch type { |
| case .Bool: |
| self.init(value:buffer.load(as: Bool.self)) |
| case .Char: |
| self.init(value:buffer.load(as: Int8.self)) |
| case .UChar: |
| self.init(value:buffer.load(as: UInt8.self)) |
| case .Short: |
| self.init(value:buffer.load(as: Int16.self)) |
| case .UShort: |
| self.init(value:buffer.load(as: UInt16.self)) |
| case .Int, .Long: |
| self.init(value:buffer.load(as: Int32.self)) |
| case .UInt, .ULong: |
| self.init(value:buffer.load(as: UInt32.self)) |
| case .LongLong: |
| self.init(value:buffer.load(as: Int64.self)) |
| case .ULongLong: |
| self.init(value:buffer.load(as: UInt64.self)) |
| case .Float: |
| self.init(value:buffer.load(as: Float.self)) |
| case .Double: |
| self.init(value:buffer.load(as: Double.self)) |
| default: |
| fatalError("NSNumber.init: unsupported type encoding spec '\(String(cString: objCType))'") |
| } |
| } |
| |
| public required convenience init?(coder aDecoder: NSCoder) { |
| guard aDecoder.allowsKeyedCoding else { |
| preconditionFailure("Unkeyed coding is unsupported.") |
| } |
| if type(of: aDecoder) == NSKeyedUnarchiver.self || aDecoder.containsValue(forKey: "NS.number") { |
| let number = aDecoder._decodePropertyListForKey("NS.number") |
| if let val = number as? Double { |
| self.init(value:val) |
| } else if let val = number as? Int { |
| self.init(value:val) |
| } else if let val = number as? Bool { |
| self.init(value:val) |
| } else { |
| return nil |
| } |
| } else { |
| if aDecoder.containsValue(forKey: "NS.boolval") { |
| self.init(value: aDecoder.decodeBool(forKey: "NS.boolval")) |
| } else if aDecoder.containsValue(forKey: "NS.intval") { |
| self.init(value: aDecoder.decodeInt64(forKey: "NS.intval")) |
| } else if aDecoder.containsValue(forKey: "NS.dblval") { |
| self.init(value: aDecoder.decodeDouble(forKey: "NS.dblval")) |
| } else { |
| return nil |
| } |
| } |
| } |
| |
| open var int8Value: Int8 { |
| var value: Int64 = 0 |
| CFNumberGetValue(_cfObject, kCFNumberSInt64Type, &value) |
| return .init(truncatingIfNeeded: value) |
| } |
| |
| open var uint8Value: UInt8 { |
| var value: Int64 = 0 |
| CFNumberGetValue(_cfObject, kCFNumberSInt64Type, &value) |
| return .init(truncatingIfNeeded: value) |
| } |
| |
| open var int16Value: Int16 { |
| var value: Int64 = 0 |
| CFNumberGetValue(_cfObject, kCFNumberSInt64Type, &value) |
| return .init(truncatingIfNeeded: value) |
| } |
| |
| open var uint16Value: UInt16 { |
| var value: Int64 = 0 |
| CFNumberGetValue(_cfObject, kCFNumberSInt64Type, &value) |
| return .init(truncatingIfNeeded: value) |
| } |
| |
| open var int32Value: Int32 { |
| var value: Int64 = 0 |
| CFNumberGetValue(_cfObject, kCFNumberSInt64Type, &value) |
| return .init(truncatingIfNeeded: value) |
| } |
| |
| open var uint32Value: UInt32 { |
| var value: Int64 = 0 |
| CFNumberGetValue(_cfObject, kCFNumberSInt64Type, &value) |
| return .init(truncatingIfNeeded: value) |
| } |
| |
| open var int64Value: Int64 { |
| var value: Int64 = 0 |
| CFNumberGetValue(_cfObject, kCFNumberSInt64Type, &value) |
| return .init(truncatingIfNeeded: value) |
| } |
| |
| open var uint64Value: UInt64 { |
| var value = CFSInt128Struct(high: 0, low: 0) |
| CFNumberGetValue(_cfObject, kCFNumberSInt128Type, &value) |
| return .init(truncatingIfNeeded: value.low) |
| } |
| |
| open var floatValue: Float { |
| var value: Float = 0 |
| CFNumberGetValue(_cfObject, kCFNumberFloatType, &value) |
| return value |
| } |
| |
| open var doubleValue: Double { |
| var value: Double = 0 |
| CFNumberGetValue(_cfObject, kCFNumberDoubleType, &value) |
| return value |
| } |
| |
| open var boolValue: Bool { |
| // Darwin Foundation NSNumber appears to have a bug and return false for NSNumber(value: Int64.min).boolValue, |
| // even though the documentation says: |
| // "A 0 value always means false, and any nonzero value is interpreted as true." |
| return (int64Value != 0) && (int64Value != Int64.min) |
| } |
| |
| open var intValue: Int { |
| var val: Int = 0 |
| withUnsafeMutablePointer(to: &val) { (value: UnsafeMutablePointer<Int>) -> Void in |
| CFNumberGetValue(_cfObject, kCFNumberLongType, value) |
| } |
| return val |
| } |
| |
| open var uintValue: UInt { |
| var val: UInt = 0 |
| withUnsafeMutablePointer(to: &val) { (value: UnsafeMutablePointer<UInt>) -> Void in |
| CFNumberGetValue(_cfObject, kCFNumberLongType, value) |
| } |
| return val |
| } |
| |
| open var stringValue: String { |
| return description(withLocale: nil) |
| } |
| |
| /// Create an instance initialized to `value`. |
| public required convenience init(integerLiteral value: Int) { |
| self.init(value: value) |
| } |
| |
| /// Create an instance initialized to `value`. |
| public required convenience init(floatLiteral value: Double) { |
| self.init(value: value) |
| } |
| |
| /// Create an instance initialized to `value`. |
| public required convenience init(booleanLiteral value: Bool) { |
| self.init(value: value) |
| } |
| |
| open func compare(_ otherNumber: NSNumber) -> ComparisonResult { |
| switch (objCType.pointee, otherNumber.objCType.pointee) { |
| case (0x66, _), (_, 0x66), (0x66, 0x66): fallthrough // 'f' float |
| case (0x64, _), (_, 0x64), (0x64, 0x64): // 'd' double |
| let (lhs, rhs) = (doubleValue, otherNumber.doubleValue) |
| if lhs < rhs { return .orderedAscending } |
| if lhs > rhs { return .orderedDescending } |
| return .orderedSame |
| case (0x51, _), (_, 0x51), (0x51, 0x51): // 'q' unsigned long long |
| let (lhs, rhs) = (uint64Value, otherNumber.uint64Value) |
| if lhs < rhs { return .orderedAscending } |
| if lhs > rhs { return .orderedDescending } |
| return .orderedSame |
| case (_, _): |
| let (lhs, rhs) = (int64Value, otherNumber.int64Value) |
| if lhs < rhs { return .orderedAscending } |
| if lhs > rhs { return .orderedDescending } |
| return .orderedSame |
| } |
| } |
| |
| open func description(withLocale locale: Locale?) -> String { |
| let aLocale = locale |
| let formatter: CFNumberFormatter |
| if (aLocale == nil) { |
| formatter = CFNumberFormatterCreate(nil, CFLocaleCopyCurrent(), kCFNumberFormatterNoStyle) |
| CFNumberFormatterSetProperty(formatter, kCFNumberFormatterMaxFractionDigits, 15._bridgeToObjectiveC()) |
| |
| } else { |
| formatter = CFNumberFormatterCreate(nil, aLocale?._cfObject, kCFNumberFormatterDecimalStyle) |
| } |
| return CFNumberFormatterCreateStringWithNumber(nil, formatter, self._cfObject)._swiftObject |
| } |
| |
| override open var _cfTypeID: CFTypeID { |
| return CFNumberGetTypeID() |
| } |
| |
| open override var description: String { |
| return description(withLocale: nil) |
| } |
| |
| internal func _cfNumberType() -> CFNumberType { |
| switch objCType.pointee { |
| case 0x42: return kCFNumberCharType |
| case 0x63: return kCFNumberCharType |
| case 0x43: return kCFNumberShortType |
| case 0x73: return kCFNumberShortType |
| case 0x53: return kCFNumberIntType |
| case 0x69: return kCFNumberIntType |
| case 0x49: return Int(uint32Value) < Int(Int32.max) ? kCFNumberIntType : kCFNumberLongLongType |
| case 0x6C: return kCFNumberLongType |
| case 0x4C: return uintValue < UInt(Int.max) ? kCFNumberLongType : kCFNumberLongLongType |
| case 0x66: return kCFNumberFloatType |
| case 0x64: return kCFNumberDoubleType |
| case 0x71: return kCFNumberLongLongType |
| case 0x51: return kCFNumberLongLongType |
| default: fatalError() |
| } |
| } |
| |
| internal func _getValue(_ valuePtr: UnsafeMutableRawPointer, forType type: CFNumberType) -> Bool { |
| switch type { |
| case kCFNumberSInt8Type: |
| valuePtr.assumingMemoryBound(to: Int8.self).pointee = int8Value |
| break |
| case kCFNumberSInt16Type: |
| valuePtr.assumingMemoryBound(to: Int16.self).pointee = int16Value |
| break |
| case kCFNumberSInt32Type: |
| valuePtr.assumingMemoryBound(to: Int32.self).pointee = int32Value |
| break |
| case kCFNumberSInt64Type: |
| valuePtr.assumingMemoryBound(to: Int64.self).pointee = int64Value |
| break |
| case kCFNumberSInt128Type: |
| struct CFSInt128Struct { |
| var high: Int64 |
| var low: UInt64 |
| } |
| let val = int64Value |
| valuePtr.assumingMemoryBound(to: CFSInt128Struct.self).pointee = CFSInt128Struct.init(high: (val < 0) ? -1 : 0, low: UInt64(bitPattern: val)) |
| break |
| case kCFNumberFloat32Type: |
| valuePtr.assumingMemoryBound(to: Float.self).pointee = floatValue |
| break |
| case kCFNumberFloat64Type: |
| valuePtr.assumingMemoryBound(to: Double.self).pointee = doubleValue |
| default: fatalError() |
| } |
| return true |
| } |
| |
| open override func encode(with aCoder: NSCoder) { |
| guard aCoder.allowsKeyedCoding else { |
| preconditionFailure("Unkeyed coding is unsupported.") |
| } |
| if let keyedCoder = aCoder as? NSKeyedArchiver { |
| keyedCoder._encodePropertyList(self) |
| } else { |
| if CFGetTypeID(self) == CFBooleanGetTypeID() { |
| aCoder.encode(boolValue, forKey: "NS.boolval") |
| } else { |
| switch objCType.pointee { |
| case 0x42: |
| aCoder.encode(boolValue, forKey: "NS.boolval") |
| break |
| case 0x63: fallthrough |
| case 0x43: fallthrough |
| case 0x73: fallthrough |
| case 0x53: fallthrough |
| case 0x69: fallthrough |
| case 0x49: fallthrough |
| case 0x6C: fallthrough |
| case 0x4C: fallthrough |
| case 0x71: fallthrough |
| case 0x51: |
| aCoder.encode(int64Value, forKey: "NS.intval") |
| case 0x66: fallthrough |
| case 0x64: |
| aCoder.encode(doubleValue, forKey: "NS.dblval") |
| default: break |
| } |
| } |
| } |
| } |
| |
| open override var classForCoder: AnyClass { return NSNumber.self } |
| } |
| |
| extension CFNumber : _NSBridgeable { |
| typealias NSType = NSNumber |
| internal var _nsObject: NSType { return unsafeBitCast(self, to: NSType.self) } |
| } |
| |
| internal func _CFSwiftNumberGetType(_ obj: CFTypeRef) -> CFNumberType { |
| return unsafeBitCast(obj, to: NSNumber.self)._cfNumberType() |
| } |
| |
| internal func _CFSwiftNumberGetValue(_ obj: CFTypeRef, _ valuePtr: UnsafeMutableRawPointer, _ type: CFNumberType) -> Bool { |
| return unsafeBitCast(obj, to: NSNumber.self)._getValue(valuePtr, forType: type) |
| } |
| |
| internal func _CFSwiftNumberGetBoolValue(_ obj: CFTypeRef) -> Bool { |
| return unsafeBitCast(obj, to: NSNumber.self).boolValue |
| } |