refactor(tenpayv2): 优化代码

src/SKIT.FlurlHttpClient.Wechat.TenpayV2/Utilities/Internal/ReflectionUtility.cs

@@ -0,0 +1,74 @@
+using System;
+using System.Linq;
+
+namespace SKIT.FlurlHttpClient.Wechat.TenpayV2.Utilities
+{
+    internal static class ReflectionUtility
+    {
+        public static void CreateOrExpandArray(ref Array? array, Type elementType, int capacity)
+        {
+            if (elementType == null) throw new ArgumentNullException(nameof(elementType));
+            if (capacity <= 0) throw new ArgumentOutOfRangeException(nameof(capacity));
+
+            if (array == null)
+            {
+                array = Array.CreateInstance(elementType, capacity);
+            }
+            else if (array.Length < capacity)
+            {
+                Array tmpArray = Array.CreateInstance(elementType, capacity);
+                Array.Copy(array, tmpArray, array.Length);
+                array = tmpArray;
+            }
+        }
+
+        public static void CreateOrExpandArrayElement(Array array, int index, Func<object, object>? updateFactory)
+        {
+            if (array == null) throw new ArgumentNullException(nameof(array));
+            if (index < 0 || index >= array.Length) throw new ArgumentOutOfRangeException(nameof(index));
+            if (updateFactory == null) throw new ArgumentNullException(nameof(updateFactory));
+
+            object? element = array.GetValue(index);
+            if (element is null)
+            {
+                Type elementType = array.GetType().GetElementType()!;
+
+                if (elementType.IsAbstract || elementType.IsInterface)
+                {
+                    throw new NotSupportedException();
+                }
+                else if (elementType.IsArray)
+                {
+                    element = Array.CreateInstance(elementType, 0);
+                }
+                else
+                {
+                    element = Activator.CreateInstance(elementType);
+                }
+            }
+
+            element = updateFactory(element);
+            array.SetValue(element, index);
+        }
+
+        public static bool CheckTypeIsSubclassOf(Type childType, Type baseType)
+        {
+            bool IsTheRawGenericType(Type type)
+                => baseType == (type.IsGenericType ? type.GetGenericTypeDefinition() : type);
+
+            bool isTheRawGenericType = childType.GetInterfaces().Any(IsTheRawGenericType);
+            if (isTheRawGenericType)
+                return true;
+
+            Type? t = childType;
+            while (t != null && t != typeof(object))
+            {
+                isTheRawGenericType = IsTheRawGenericType(t);
+                if (isTheRawGenericType) return true;
+                t = t.BaseType;
+            }
+
+            return false;
+        }
+    }
+}