WIP: do not use yet

Sources/LiveList.swift

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+//
+//  LiveList.swift
+//  CoreStore
+//
+//  Copyright © 2018 John Rommel Estropia
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy
+//  of this software and associated documentation files (the "Software"), to deal
+//  in the Software without restriction, including without limitation the rights
+//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//  copies of the Software, and to permit persons to whom the Software is
+//  furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in all
+//  copies or substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+//  SOFTWARE.
+//
+
+#if canImport(Combine)
+
+import Combine
+import CoreData
+
+
+// MARK: - LiveList
+
+@available(iOS 13.0, *)
+public class LiveList<D: DynamicObject>: Hashable, ObservableObject {
+    
+    // MARK: Public (Accessors)
+    
+    /**
+     The type for the objects contained bye the `ListMonitor`
+     */
+    public typealias ObjectType = D
+    
+    public var snapshot: Snapshot = []
+    
+    
+    // MARK: ObservableObject
+    
+    public var objectWillChange: ObservableObjectPublisher {
+        
+        return self.cs_toRaw().objectWillChange
+    }
+    
+    
+    // MARK: Private
+    
+    private let observer: Internals.FetchedResultsControllerDelegate
+    
+    
+    // MARK: - Snapshot
+    
+    public struct Snapshot: RandomAccessCollection {
+
+        // MARK: RandomAccessCollection
+        
+        public var startIndex: Index {
+            
+        }
+
+        public var endIndex: Index {
+        
+        }
+
+        public subscript(position: Index) -> ObjectType {
+        
+        }
+        
+        
+        // MARK: Sequence
+
+        public typealias Element = ObjectType
+
+        public typealias Index = Int
+
+//        public typealias SubSequence = Slice<Snapshot<ObjectType>>
+//
+//        /// A type that represents the indices that are valid for subscripting the
+//        /// collection, in ascending order.
+//        public typealias Indices = Range<Int>
+//
+//        /// A type that provides the collection's iteration interface and
+//        /// encapsulates its iteration state.
+//        ///
+//        /// By default, a collection conforms to the `Sequence` protocol by
+//        /// supplying `IndexingIterator` as its associated `Iterator`
+//        /// type.
+//        public typealias Iterator = IndexingIterator<FetchedResults<Result>>
+        
+        private let diffableSource: NSDiffable
+    }
+}
+
+extension ListMonitor: ObservableObject {
+
+    public var objectWillChange: ObservableObjectPublisher {
+        
+        return withUnsafePointer(to: &Static.objectWillChange) {
+            self.userInfo[
+                $0,
+                lazyInit: ObservableObjectPublisher.init
+            ] as! ObservableObjectPublisher
+        }
+    }
+}
+
+@available(iOS 13.0, *)
+extension CoreStoreObject: ObservableObject {
+    
+    public var objectWillChange: ObservableObjectPublisher {
+        
+        return self.cs_toRaw().objectWillChange
+    }
+}
+
+fileprivate enum Static {
+    
+    static var objectWillChange: Void?
+}
+
+#endif