/// <summary>
/// Dynamically invokes the function
/// </summary>
/// <param name="obj"></param>
/// <param name="parameters"></param>
/// <returns></returns>
public object DynamicInvoke(UObject obj, params object[] parameters)
{
if (parameters == null)
{
parameters = new object[0];
}
bool validParams = true;
Dictionary <UProperty, Delegate> fromNativeParams = new Dictionary <UProperty, Delegate>();
Dictionary <UProperty, Delegate> toNativeParams = new Dictionary <UProperty, Delegate>();
UProperty returnValueProp = null;
List <UProperty> paramProps = new List <UProperty>();
foreach (UProperty prop in GetProperties <UProperty>())
{
if (prop.HasAnyPropertyFlags(EPropertyFlags.Parm))
{
if (prop.HasAnyPropertyFlags(EPropertyFlags.ReturnParm))
{
returnValueProp = prop;
}
else
{
paramProps.Add(prop);
}
Type paramType = UProperty.GetTypeFromProperty(prop);
if (paramType == null)
{
validParams = false;
break;
}
Delegate fromNative = MarshalingDelegateResolverSlow.GetFromNative(paramType);
Delegate toNative = MarshalingDelegateResolverSlow.GetToNative(paramType);
if (fromNative == null || toNative == null)
{
validParams = false;
break;
}
fromNativeParams.Add(prop, fromNative);
toNativeParams.Add(prop, toNative);
}
}
if (parameters.Length != paramProps.Count)
{
validParams = false;
}
if (!validParams)
{
return(null);
}
// Sort the parameters by offset, this is assumingly the correct thing to do?
// - Otherwise we need to take the param names into this function. Or just not sort at all?
//paramProps.Sort((x, y) => x.GetOffset_ForUFunction().CompareTo(y.GetOffset_ForUFunction()));
object result = null;
unsafe
{
int paramsSize = ParmsSize;
byte * paramsBufferAllocation = stackalloc byte[ParmsSize];
IntPtr paramsBuffer = new IntPtr(paramsBufferAllocation);
FMemory.Memzero(paramsBuffer, paramsSize);
// Initialize default values for all parameters
foreach (UProperty prop in GetProperties <UProperty>())
{
if (prop.HasAnyPropertyFlags(EPropertyFlags.Parm))
{
Native.Native_UProperty.InitializeValue_InContainer(prop.Address, paramsBuffer);
}
}
// Copy the managed parameters to the buffer
for (int i = 0; i < parameters.Length; i++)
{
UProperty paramProp = paramProps[i];
object paramValue = parameters[i];
if (paramValue != null && (!paramProp.HasAnyPropertyFlags(EPropertyFlags.OutParm) ||
paramProp.HasAnyPropertyFlags(EPropertyFlags.ReferenceParm)))
{
toNativeParams[paramProp].DynamicInvoke(
paramsBuffer + paramProp.GetOffset_ForUFunction(), (int)0, paramProp.Address, paramValue);
}
}
// Invoke the function
NativeReflection.InvokeFunction(obj.Address, Address, paramsBuffer, paramsSize);
// Copy parameters / return value from the buffer
for (int i = 0; i < parameters.Length; i++)
{
UProperty paramProp = paramProps[i];
if (paramProp.HasAnyPropertyFlags(EPropertyFlags.OutParm))
{
parameters[i] = fromNativeParams[paramProp].DynamicInvoke(
paramsBuffer + paramProp.GetOffset_ForUFunction(), (int)0, paramProp.Address);
}
}
if (returnValueProp != null)
{
result = fromNativeParams[returnValueProp].DynamicInvoke(
paramsBuffer + returnValueProp.GetOffset_ForUFunction(), (int)0, returnValueProp.Address);
}
// Destroy the memory for all of the parameters
foreach (UProperty prop in GetProperties <UProperty>())
{
if (prop.HasAnyPropertyFlags(EPropertyFlags.Parm))
{
Native.Native_UProperty.DestroyValue_InContainer(prop.Address, paramsBuffer);
}
}
}
return(result);
}