Method BuildFromUserdata

Plugins/UnLua/Source/UnLua/Private/UnLuaDebugBase.cpp:205–306

* Build value based on a userdata */

     * Build value based on a userdata
     */
    void FLuaDebugValue::BuildFromUserdata(lua_State *L, int32 Index)
    {
        if (lua_type(L, Index) != LUA_TUSERDATA)
        {
            return;
        }

        // get class name
        void *ContainerPtr = UnLua::GetPointer(L, Index);
        const char *ClassNamePtr = nullptr;
        if (lua_getmetatable(L, Index) > 0)
        {
            lua_pushstring(L, "__name");
            lua_rawget(L, -2);
            if (lua_isstring(L, -1))
            {
                ClassNamePtr = lua_tostring(L, -1);
            }
            lua_pop(L, 2);
        }

        if (ClassNamePtr)
        {
            FString ClassName(ClassNamePtr);
            UStruct *Struct = FindObject<UStruct>(ANY_PACKAGE, *ClassName + 1);
            if (Struct)
            {
                // the userdata is a struct instance
                UObjectBaseUtility *ContainerObject = GetContainerObject(Struct, ContainerPtr);
                BuildFromUStruct(Struct, ContainerPtr, ContainerObject);
            }
            else
            {
                if (!ContainerPtr)
                {
                    ReadableValue = FString::Printf(TEXT("userdata (%s): 0x%p"), *ClassName, ContainerPtr);
                    return;
                }

                if (ClassName == TEXT("TArray"))
                {
                    // the userdata is a TArray instance
                    FLuaArray *Array = (FLuaArray*)ContainerPtr;
                    FProperty *InnerProperty = Array->Inner->GetUProperty();
                    if (InnerProperty)
                    {
                        FScriptArrayHelper ArrayHelper = FScriptArrayHelper::CreateHelperFormInnerProperty(InnerProperty, Array->ScriptArray);
                        BuildFromTArray(ArrayHelper, InnerProperty);
                    }
                    else
                    {
                        ReadableValue = FString::Printf(TEXT("TArray<UnknownType> Num=%d, Not Support Expand"), Array->Num());
                    }
                }
                else if (ClassName == TEXT("TMap"))
                {
                    // the userdata is a TMap instance
                    FLuaMap *Map = (FLuaMap*)ContainerPtr;