Stubbed CppTypeInfo.Cast<TBase>(ICppObject subClass)

src/Mono.VisualC.Interop/ABI/CppAbi.cs

@@ -136,7 +136,7 @@ namespace Mono.VisualC.Interop.ABI {
 
 		protected virtual CppTypeInfo MakeTypeInfo (IEnumerable<PInvokeSignature> methods)
 		{
-			return new CppTypeInfo (this, methods.Where (m => IsVirtual (m.OrigMethod)), layout_type);
+			return new CppTypeInfo (this, methods.Where (m => IsVirtual (m.OrigMethod)), layout_type, wrapper_type);
 		}
 
 		protected virtual IEnumerable<PropertyInfo> GetProperties ()

src/Mono.VisualC.Interop/ABI/Impl/ItaniumAbi.cs

@@ -55,7 +55,7 @@ namespace Mono.VisualC.Interop.ABI {
 
 		protected override CppTypeInfo MakeTypeInfo (IEnumerable<PInvokeSignature> methods)
 		{
-			return new CppTypeInfo (this, GetVirtualMethodSlots (methods), layout_type);
+			return new CppTypeInfo (this, GetVirtualMethodSlots (methods), layout_type, wrapper_type);
 		}
 
 		private IEnumerable<PInvokeSignature> GetVirtualMethodSlots (IEnumerable<PInvokeSignature> methods)

src/Mono.VisualC.Interop/ABI/Impl/MsvcAbi.cs

@@ -49,7 +49,7 @@ namespace Mono.VisualC.Interop.ABI {
 
 		protected override CppTypeInfo MakeTypeInfo (IEnumerable<PInvokeSignature> methods)
 		{
-			return new MsvcTypeInfo (this, methods.Where (m => IsVirtual (m.OrigMethod)), layout_type);
+			return new MsvcTypeInfo (this, methods.Where (m => IsVirtual (m.OrigMethod)), layout_type, wrapper_type);
 		}
 
 		public override CallingConvention? GetCallingConvention (MethodInfo methodInfo)

src/Mono.VisualC.Interop/ABI/Impl/MsvcTypeInfo.cs

@@ -33,8 +33,8 @@ using Mono.VisualC.Interop.Util;
 
 namespace Mono.VisualC.Interop.ABI {
 	public class MsvcTypeInfo : CppTypeInfo {
-		public MsvcTypeInfo (MsvcAbi abi, IEnumerable<PInvokeSignature> virtualMethods, Type nativeLayout)
+		public MsvcTypeInfo (MsvcAbi abi, IEnumerable<PInvokeSignature> virtualMethods, Type nativeLayout, Type wrapperType)
-			: base (abi, virtualMethods, nativeLayout)
+			: base (abi, virtualMethods, nativeLayout, wrapperType)
 		{
 		}
 

src/Mono.VisualC.Interop/CppTypeInfo.cs

@@ -45,6 +45,7 @@ namespace Mono.VisualC.Interop {
 
 		public CppAbi Abi { get; private set; }
 		public Type NativeLayout { get; private set; }
+		public Type WrapperType { get; private set; }
 
 		public IList<PInvokeSignature> VirtualMethods { get; private set; } // read only version
 		protected List<PInvokeSignature> virtual_methods;
@@ -69,10 +70,11 @@ namespace Mono.VisualC.Interop {
 
 		private VTable lazy_vtable;
 
-		public CppTypeInfo (CppAbi abi, IEnumerable<PInvokeSignature> virtualMethods, Type nativeLayout)
+		public CppTypeInfo (CppAbi abi, IEnumerable<PInvokeSignature> virtualMethods, Type nativeLayout, Type/*?*/ wrapperType)
 		{
 			Abi = abi;
 			NativeLayout = nativeLayout;
+			WrapperType = wrapperType;
 
 			virtual_methods = new List<PInvokeSignature> (virtualMethods);
 			VirtualMethods = new ReadOnlyCollection<PInvokeSignature> (virtual_methods);
@@ -130,6 +132,12 @@ namespace Mono.VisualC.Interop {
 				(addVTablePointer? baseType.FieldOffsetPadding : baseType.field_offset_padding_without_vtptr);
 		}
 
+		public virtual TBase Cast<TBase> (ICppObject instance)
+			where TBase : ICppObject
+		{
+			throw new NotImplementedException ();
+		}
+
 		public int CountBases (Func<CppTypeInfo, bool> predicate)
 		{
 			int count = 0;