⭐️ Impl: RNIIdentifiable

ios/src_library/Helpers+Utilities/RNIIdentifiable.swift

@@ -0,0 +1,64 @@
+//
+//  RNIIdentifiable.swift
+//  react-native-ios-modal
+//
+//  Created by Dominic Go on 3/31/23.
+//
+
+import Foundation
+
+fileprivate final class RNIObjectIdentifier {
+  static var counterID = -1;
+
+  let id: Int = {
+    RNIObjectIdentifier.counterID += 1;
+    return RNIObjectIdentifier.counterID;
+  }();
+
+  let uuid = UUID();
+};
+
+fileprivate final class RNIObjectIdentifierMap {
+  static let map = NSMapTable<AnyObject, RNIObjectIdentifier>(
+    keyOptions: .weakMemory,
+    valueOptions: .strongMemory
+  );
+};
+
+
+public protocol RNIIdentifiable: AnyObject {
+
+  static var synthesizedIdPrefix: String { set get };
+
+  var synthesizedID: Int { get };
+
+  var synthesizedUUID: UUID { get };
+
+};
+
+extension RNIIdentifiable {
+  fileprivate var identifier: RNIObjectIdentifier {
+    if let identifier = RNIObjectIdentifierMap.map.object(forKey: self) {
+      return identifier;
+    };
+
+    let identifier = RNIObjectIdentifier();
+    RNIObjectIdentifierMap.map.setObject(identifier, forKey: self);
+
+    return identifier;
+  };
+
+  static var synthesizedIdPrefix: String { "" };
+
+  public var synthesizedID: Int {
+    self.identifier.id;
+  };
+
+  public var synthesizedStringID: String {
+    Self.synthesizedIdPrefix + "\(self.synthesizedID)";
+  };
+
+  public var synthesizedUUID: UUID {
+    self.identifier.uuid;
+  };
+};