SmartAny中支持是否使用null值

Author: iAmMccc

Example/SmartCodable/TestViewController.swift

@@ -36,27 +36,20 @@ class TestViewController: BaseViewController {
 
 
         let dict: [String: Any] = [
-            "age": 0,
+            "data": NSNull(),
             "name": "操作成功",
 
         ]
 
-        guard let model = SubModel.deserialize(from: dict) else { return }
+        guard let model = Model.deserialize(from: dict) else { return }
         print(model)
     }
 
-    class Model: SmartCodable {
+    struct Model: SmartCodable {
         var name: String = ""
 
-        required init() { }
-    }
-    
-    @SmartSubclass
-    class SubModel: Model {
-        @objc var age: String = ""
-        
         @SmartAny
-        var location: String = ""
+        var data: Any?
 
     }
 }

Sources/SmartCodable/Core/PropertyWrapper/SmartAny/SmartAny.swift

@@ -55,6 +55,14 @@ extension SmartAny: Codable {
             )
         }
 
+        /// 是否考虑使用null值？ 案例：属性类型是Any时，是否将null解析到Any类型中。
+        if decoder.json == .null && SmartCodableOptions.ignoreNull {
+            throw DecodingError.typeMismatch(Self.self, DecodingError.Context(
+                codingPath: decoder.codingPath, debugDescription: "Expected \(Self.self) value，but an exception occurred！")
+            )
+        }
+        
+        
         if let decoded = try? decoder.unwrap(as: SmartAnyImpl.self), let peel = decoded.peel as? T {
             self = .init(wrappedValue: peel)
         } else {

…re/SmartCodable/SmartCodableConfig.swift …e/SmartCodable/SmartCodableOptions.swiftSources/SmartCodable/Core/SmartCodable/SmartCodableConfig.swift renamed to Sources/SmartCodable/Core/SmartCodable/SmartCodableOptions.swift Sources/SmartCodable/Core/SmartCodable/SmartCodableConfig.swift renamed to Sources/SmartCodable/Core/SmartCodable/SmartCodableOptions.swift

@@ -19,15 +19,21 @@ public struct SmartCodableOptions {
     ///     - .rounded:  Returns 3 (rounds to nearest)
     ///
     /// - Note: This only affects decoding process
-    public static var numberStrategy: NumberConversionStrategy {
-        get { _numberConversionStrategy }
-        set {_numberConversionStrategy = newValue }
-    }
+    public static var numberStrategy: NumberConversionStrategy = .strict
+
 
+    /// Whether to treat JSON `null` as a decoded value for `Any`-typed property wrappers (default: `true`)
+    ///
+    /// 在对使用 `Any`（或 Any 支持的属性包装器）进行解码时，决定是否把 JSON 中的 `null` 当作可被解码并赋值到 `Any` 的值。
+    ///
+    /// - Behavior:
+    ///   - 当为 `true`（默认）时：遇到 JSON 字段值为 `null`，属性包装器**不会**把 `NSNull`/`nil` 赋给目标 `Any`，而是跳过赋值（保持属性的默认值或原有值）。
+    ///   - 当为 `false` 时：遇到 JSON 字段值为 `null`，属性包装器会把 `NSNull()`（或解码为 `nil`，取决于你的实现）作为解析结果赋给 `Any`，从而能在运行时检测到该字段为 `null`。
+    public static var ignoreNull: Bool = true
+}
 
-    private static var _numberConversionStrategy = NumberConversionStrategy.strict
 
-    
+extension SmartCodableOptions {
     /// Numeric type conversion strategy
     public enum NumberConversionStrategy {
         /// Strict mode: Must match exactly, otherwise returns nil (default)