--- /dev/null
+////////////////////////////////////////////////////////////////////////////
+//
+// Copyright 2015 Realm Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+////////////////////////////////////////////////////////////////////////////
+
+import Foundation
+import Realm
+
+#if BUILDING_REALM_SWIFT_TESTS
+import RealmSwift
+#endif
+
+// MARK: Internal Helpers
+
+// Swift 3.1 provides fixits for some of our uses of unsafeBitCast
+// to use unsafeDowncast instead, but the bitcast is required.
+internal func noWarnUnsafeBitCast<T, U>(_ x: T, to type: U.Type) -> U {
+ return unsafeBitCast(x, to: type)
+}
+
+/// Given a list of `Any`-typed varargs, unwrap any optionals and
+/// replace them with the underlying value or NSNull.
+internal func unwrapOptionals(in varargs: [Any]) -> [Any] {
+ return varargs.map { arg in
+#if swift(>=3.1)
+ if let someArg = arg as Any? {
+ return someArg
+ }
+ return NSNull()
+#else
+ if let optionalArg = arg as? RealmAnyOptionalUnboxingWorkaround {
+ return optionalArg.rlm_unwrappedValue()
+ } else {
+ return arg
+ }
+#endif
+ }
+}
+
+// FIXME: Kill this when we drop Xcode 8.0 support.
+#if swift(>=3.1)
+#else
+private protocol RealmAnyOptionalUnboxingWorkaround {
+ func rlm_unwrappedValue() -> Any
+}
+
+extension Optional: RealmAnyOptionalUnboxingWorkaround {
+ func rlm_unwrappedValue() -> Any {
+ switch self {
+ case .none: return NSNull()
+ case let .some(underlying): return underlying
+ }
+ }
+}
+#endif
+
+internal func notFoundToNil(index: UInt) -> Int? {
+ if index == UInt(NSNotFound) {
+ return nil
+ }
+ return Int(index)
+}
+
+internal func throwRealmException(_ message: String, userInfo: [AnyHashable: Any]? = nil) {
+ NSException(name: NSExceptionName(rawValue: RLMExceptionName), reason: message, userInfo: userInfo).raise()
+}
+
+internal func throwForNegativeIndex(_ int: Int, parameterName: String = "index") {
+ if int < 0 {
+ throwRealmException("Cannot pass a negative value for '\(parameterName)'.")
+ }
+}
+
+internal func gsub(pattern: String, template: String, string: String, error: NSErrorPointer = nil) -> String? {
+ let regex = try? NSRegularExpression(pattern: pattern, options: [])
+ return regex?.stringByReplacingMatches(in: string, options: [],
+ range: NSRange(location: 0, length: string.utf16.count),
+ withTemplate: template)
+}
+
+internal func cast<U, V>(_ value: U, to: V.Type) -> V {
+ if let v = value as? V {
+ return v
+ }
+ return unsafeBitCast(value, to: to)
+}
+
+extension Object {
+ // Must *only* be used to call Realm Objective-C APIs that are exposed on `RLMObject`
+ // but actually operate on `RLMObjectBase`. Do not expose cast value to user.
+ internal func unsafeCastToRLMObject() -> RLMObject {
+ return unsafeBitCast(self, to: RLMObject.self)
+ }
+}
+
+// MARK: CustomObjectiveCBridgeable
+
+internal func dynamicBridgeCast<T>(fromObjectiveC x: Any) -> T {
+ if T.self == DynamicObject.self {
+ return unsafeBitCast(x as AnyObject, to: T.self)
+ } else if let BridgeableType = T.self as? CustomObjectiveCBridgeable.Type {
+ return BridgeableType.bridging(objCValue: x) as! T
+ } else {
+ return x as! T
+ }
+}
+
+internal func dynamicBridgeCast<T>(fromSwift x: T) -> Any {
+ if let x = x as? CustomObjectiveCBridgeable {
+ return x.objCValue
+ } else {
+ return x
+ }
+}
+
+// Used for conversion from Objective-C types to Swift types
+internal protocol CustomObjectiveCBridgeable {
+ static func bridging(objCValue: Any) -> Self
+ var objCValue: Any { get }
+}
+
+// FIXME: needed with swift 3.2
+// Double isn't though?
+extension Float: CustomObjectiveCBridgeable {
+ static func bridging(objCValue: Any) -> Float {
+ return (objCValue as! NSNumber).floatValue
+ }
+ var objCValue: Any {
+ return NSNumber(value: self)
+ }
+}
+
+extension Int8: CustomObjectiveCBridgeable {
+ static func bridging(objCValue: Any) -> Int8 {
+ return (objCValue as! NSNumber).int8Value
+ }
+ var objCValue: Any {
+ return NSNumber(value: self)
+ }
+}
+extension Int16: CustomObjectiveCBridgeable {
+ static func bridging(objCValue: Any) -> Int16 {
+ return (objCValue as! NSNumber).int16Value
+ }
+ var objCValue: Any {
+ return NSNumber(value: self)
+ }
+}
+extension Int32: CustomObjectiveCBridgeable {
+ static func bridging(objCValue: Any) -> Int32 {
+ return (objCValue as! NSNumber).int32Value
+ }
+ var objCValue: Any {
+ return NSNumber(value: self)
+ }
+}
+extension Int64: CustomObjectiveCBridgeable {
+ static func bridging(objCValue: Any) -> Int64 {
+ return (objCValue as! NSNumber).int64Value
+ }
+ var objCValue: Any {
+ return NSNumber(value: self)
+ }
+}
+extension Optional: CustomObjectiveCBridgeable {
+ static func bridging(objCValue: Any) -> Optional {
+ if objCValue is NSNull {
+ return nil
+ } else {
+ return .some(dynamicBridgeCast(fromObjectiveC: objCValue))
+ }
+ }
+ var objCValue: Any {
+ if let value = self {
+ return dynamicBridgeCast(fromSwift: value)
+ } else {
+ return NSNull()
+ }
+ }
+}
+
+// MARK: AssistedObjectiveCBridgeable
+
+internal protocol AssistedObjectiveCBridgeable {
+ static func bridging(from objectiveCValue: Any, with metadata: Any?) -> Self
+ var bridged: (objectiveCValue: Any, metadata: Any?) { get }
+}
fnp / wl-app.git / blobdiff