public void GetMethodDescriptionAndObject(Type type, IntPtr selector, bool is_static, IntPtr obj, ref IntPtr mthis, IntPtr desc)
{
var sel = Selector.GetName(selector);
var res = GetMethodNoThrow(type, type, sel, is_static);
if (res == null)
{
throw ErrorHelper.CreateError(8006, "Failed to find the selector '{0}' on the type '{1}'", sel, type.FullName);
}
if (res.IsInstanceCategory)
{
mthis = IntPtr.Zero;
}
else
{
try {
var nsobj = Runtime.GetNSObject(obj, Runtime.MissingCtorResolution.ThrowConstructor1NotFound, true);
mthis = Runtime.AllocGCHandle(nsobj);
if (res.Method.ContainsGenericParameters)
{
res.WriteUnmanagedDescription(desc, Runtime.FindClosedMethod(nsobj.GetType(), res.Method));
return;
}
} catch (Exception e) {
throw ErrorHelper.CreateError(8035, e, $"Failed to get the 'this' instance in a method call to {res.DescriptiveMethodName}.");
}
}
res.WriteUnmanagedDescription(desc);
}
internal static IntPtr CreateNSObject(IntPtr type_gchandle, IntPtr handle, Flags flags)
{
// This function is called from native code before any constructors have executed.
var type = (Type)Runtime.GetGCHandleTarget(type_gchandle);
var obj = (NSObject)RuntimeHelpers.GetUninitializedObject(type);
obj.handle = handle;
obj.flags = flags;
return(Runtime.AllocGCHandle(obj));
}
internal static IntPtr CreateNSObject(IntPtr type_gchandle, IntPtr handle, Flags flags)
{
// This function is called from native code before any constructors have executed.
var type = (Type)Runtime.GetGCHandleTarget(type_gchandle);
try {
var obj = (NSObject)RuntimeHelpers.GetUninitializedObject(type);
obj.handle = handle;
obj.flags = flags;
return(Runtime.AllocGCHandle(obj));
} catch (Exception e) {
throw ErrorHelper.CreateError(8041, e, Errors.MX8041 /* Unable to create an instance of the type {0} */, type.FullName);
}
}