MVVM frame work done, under unit test

源代码/StgSharp/Logic/ViewModel/DataBinding.cs

@@ -0,0 +1,52 @@
+using System;
+using System.Collections.Generic;
+using System.Data.Common;
+using System.Diagnostics.CodeAnalysis;
+using System.Linq;
+using System.Runtime.InteropServices;
+using System.Security.Cryptography.X509Certificates;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace StgSharpDebug.Logic
+{
+#nullable enable
+    
+    [UnmanagedFunctionPointer(CallingConvention.Cdecl)] public delegate ref object BindingDataGetter();
+    [UnmanagedFunctionPointer(CallingConvention.Cdecl)] public delegate void BindingDataSetter(ref object value);
+
+    public unsafe struct DataBindingEntry
+    {
+        private IntPtr getterPtr, setterPtr;
+
+        public DataBindingEntry(
+            [NotNull] BindingDataGetter gettingCallback,
+            [NotNull] BindingDataSetter settingCallback)
+        {
+            getterPtr = Marshal.GetFunctionPointerForDelegate(gettingCallback);
+            setterPtr = Marshal.GetFunctionPointerForDelegate(settingCallback);
+        }
+
+        public ref object GetValue()
+        {
+            return ref ((delegate* unmanaged[Cdecl]<ref object>)getterPtr)();
+        }
+
+        public void SetData(ref object value)
+        {
+            ((delegate* unmanaged[Cdecl]<ref object, void>)setterPtr)(ref value);
+        }
+
+        public static DataBindingEntry NullBinding
+        {
+            get => new DataBindingEntry();
+        }
+
+        public bool ExactEqual(DataBindingEntry other)
+        {
+            return getterPtr == other.getterPtr && setterPtr == other.setterPtr;
+        }
+    }
+
+#nullable restore
+}