WIP: objective C storages

Sources/ObjectiveC/CSStorageInterface.swift

@@ -40,27 +40,39 @@ public protocol CSStorageInterface {
  The `CSLocalStorageOptions` provides settings that tells the `CSDataStack` how to setup the persistent store for `CSLocalStorage` implementers.
  */
 @objc
-public enum CSLocalStorageOptions: Int {
+public final class CSLocalStorageOptions: NSObject {
     
     /**
      Tells the `DataStack` that the store should not be migrated or recreated, and should simply fail on model mismatch
      */
-    case None = 0
+    @objc
+    public static let none = 0
     
     /**
      Tells the `DataStack` to delete and recreate the store on model mismatch, otherwise exceptions will be thrown on failure instead
      */
-    case RecreateStoreOnModelMismatch = 1
+    @objc
+    public static let recreateStoreOnModelMismatch = 1
     
     /**
      Tells the `DataStack` to prevent progressive migrations for the store
      */
-    case PreventProgressiveMigration = 2
+    @objc
+    public static let preventProgressiveMigration = 2
     
     /**
      Tells the `DataStack` to allow lightweight migration for the store when added synchronously
      */
-    case AllowSynchronousLightweightMigration = 4
+    @objc
+    public static let allowSynchronousLightweightMigration = 4
+    
+    
+    // MARK: Private
+    
+    private override init() {
+        
+        fatalError()
+    }
 }
 
 
@@ -88,7 +100,7 @@ public protocol CSLocalStorage: CSStorageInterface {
      Options that tell the `DataStack` how to setup the persistent store
      */
     @objc
-    var localStorageOptions: CSLocalStorageOptions { get }
+    var localStorageOptions: Int { get }
     
     /**
      Called by the `CSDataStack` to perform actual deletion of the store file from disk. Do not call directly! The `sourceModel` argument is a hint for the existing store's model version. Implementers can use the `sourceModel` to perform necessary store operations. (SQLite stores for example, can convert WAL journaling mode to DELETE before deleting)