prototype new Fields as propertyWrappers (Swift 5.2 above only)

Sources/Field.swift

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+//
+//  Field.swift
+//  CoreStore
+//
+//  Copyright © 2020 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.
+//
+
+import CoreData
+import Foundation
+
+
+// MARK: - DynamicObject
+
+extension DynamicObject where Self: CoreStoreObject {
+
+    /**
+     The containing type for value propertiess. `Field` properties support any type that conforms to `ImportableAttributeType`.
+     ```
+     class Animal: CoreStoreObject {
+         @Field.Stored("species")
+         var species = ""
+
+         @Field.Stored("nickname")
+         var nickname: String?
+
+         @Field.PlistCoded("color")
+         var color: UIColor?
+     }
+     ```
+     - Important: `Field` properties are required to be used as `@propertyWrapper`s. Any other declaration not using the `@Field.*(...) var` syntax will be ignored.
+     */
+    public typealias Field = FieldContainer<Self>
+}
+
+
+// MARK: - FieldContainer
+
+/**
+ The containing type for value properties. Use the `DynamicObject.Field` typealias instead for shorter syntax.
+ ```
+ class Animal: CoreStoreObject {
+     @Field.Stored("species")
+     var species = ""
+
+     @Field.Stored("nickname")
+     var nickname: String?
+
+     @Field.PlistCoded("color")
+     var color: UIColor?
+ }
+ ```
+ */
+public enum FieldContainer<O: CoreStoreObject> {}