Function GetScriptContainer

Plugins/UnLua/Source/UnLua/Private/LuaCore.cpp:533–548

* Get a script container at the given stack index */

 * Get a script container at the given stack index
 */
void* GetScriptContainer(lua_State *L, int32 Index)
{
    TValue* Value = GetTValue(L, Index);
    if ((Value->tt_ & 0x0F) == LUA_TUSERDATA)
    {
        uint8 Flag = (BIT_VARIANT_TAG | BIT_SCRIPT_CONTAINER);              // variant tags

        Udata* U = GetUdata(Value);
        FUserdataDesc* UserdataDesc = GetUserdataDesc(U);
        if (UserdataDesc)
        {
            return (UserdataDesc->tag & Flag) == Flag ? *((void**)GetUdataMem(U)) : nullptr;
        }
    }
    return nullptr;
}

/**
 * Remove a cached script container from 'ScriptContainerMap'