Deprecation of enum CoreStore, reorganize global symbols

Sources/DynamicObjectMeta.swift

@@ -0,0 +1,143 @@
+//
+//  DynamicObjectMeta.swift
+//  CoreStore iOS
+//
+//  Created by John Estropia on 2019/08/20.
+//  Copyright © 2019 John Rommel Estropia. All rights reserved.
+//
+
+#if swift(>=5.1)
+
+import CoreData
+import Foundation
+
+
+// MARK: - DynamicObjectMeta
+
+@dynamicMemberLookup
+public struct DynamicObjectMeta<R, D>: CustomDebugStringConvertible {
+
+    // MARK: Public
+
+    public typealias Root = R
+    public typealias Destination = D
+
+    
+    // MARK: CustomDebugStringConvertible
+
+    public var debugDescription: String {
+
+        return self.keyPathString
+    }
+
+
+    // MARK: Internal
+
+    internal let keyPathString: KeyPathString
+
+    internal init(keyPathString: KeyPathString) {
+
+        self.keyPathString = keyPathString
+    }
+
+    internal func appending<D2>(keyPathString: KeyPathString) -> DynamicObjectMeta<(R, D), D2> {
+
+        return .init(keyPathString: [self.keyPathString, keyPathString].joined(separator: "."))
+    }
+}
+
+
+// MARK: - DynamicObjectMeta where Destination: NSManagedObject
+
+extension DynamicObjectMeta where Destination: NSManagedObject {
+
+    /**
+     Returns the value for the property identified by a given key.
+     */
+    public subscript<V: AllowedObjectiveCAttributeKeyPathValue>(dynamicMember member: KeyPath<Destination, V>) -> DynamicObjectMeta<(Root, Destination), V.ReturnValueType> {
+
+        let keyPathString = String(keyPath: member)
+        return self.appending(keyPathString: keyPathString)
+    }
+
+    /**
+     Returns the value for the property identified by a given key.
+     */
+    public subscript<V: NSManagedObject>(dynamicMember member: KeyPath<Destination, V>) -> DynamicObjectMeta<(Root, Destination), V> {
+
+        let keyPathString = String(keyPath: member)
+        return self.appending(keyPathString: keyPathString)
+    }
+
+    /**
+     Returns the value for the property identified by a given key.
+     */
+    public subscript<V: NSManagedObject>(dynamicMember member: KeyPath<Destination, V?>) -> DynamicObjectMeta<(Root, Destination), V> {
+
+        // TODO: not working
+        let keyPathString = String(keyPath: member)
+        return self.appending(keyPathString: keyPathString)
+    }
+
+    /**
+     Returns the value for the property identified by a given key.
+     */
+    public subscript<V: NSOrderedSet>(dynamicMember member: KeyPath<Destination, V>) -> DynamicObjectMeta<(Root, Destination), V> {
+
+        let keyPathString = String(keyPath: member)
+        return self.appending(keyPathString: keyPathString)
+    }
+
+    /**
+     Returns the value for the property identified by a given key.
+     */
+    public subscript<V: NSOrderedSet>(dynamicMember member: KeyPath<Destination, V?>) -> DynamicObjectMeta<(Root, Destination), V> {
+
+        let keyPathString = String(keyPath: member)
+        return self.appending(keyPathString: keyPathString)
+    }
+
+    /**
+     Returns the value for the property identified by a given key.
+     */
+    public subscript<V: NSSet>(dynamicMember member: KeyPath<Destination, V>) -> DynamicObjectMeta<(Root, Destination), V> {
+
+        let keyPathString = String(keyPath: member)
+        return self.appending(keyPathString: keyPathString)
+    }
+
+    /**
+     Returns the value for the property identified by a given key.
+     */
+    public subscript<V: NSSet>(dynamicMember member: KeyPath<Destination, V?>) -> DynamicObjectMeta<(Root, Destination), V> {
+
+        let keyPathString = String(keyPath: member)
+        return self.appending(keyPathString: keyPathString)
+    }
+}
+
+
+// MARK: - DynamicObjectMeta where Destination: CoreStoreObject
+
+extension DynamicObjectMeta where Destination: CoreStoreObject {
+
+    /**
+     Returns the value for the property identified by a given key.
+     */
+    public subscript<K: AttributeKeyPathStringConvertible>(dynamicMember member: KeyPath<Destination, K>) -> DynamicObjectMeta<(Root, Destination), K.ReturnValueType> {
+
+        let keyPathString = String(keyPath: member)
+        return self.appending(keyPathString: keyPathString)
+    }
+
+    /**
+     Returns the value for the property identified by a given key.
+     */
+    public subscript<K: RelationshipKeyPathStringConvertible>(dynamicMember member: KeyPath<Destination, K>) -> DynamicObjectMeta<(Root, Destination), K.DestinationValueType> {
+
+        let keyPathString = String(keyPath: member)
+        return self.appending(keyPathString: keyPathString)
+    }
+}
+
+#endif