Method CreateInstance

Source/Engine/Content/JsonAsset.cpp:457–524

}

bool JsonAsset::CreateInstance()
{
    ScopeLock lock(Locker);
    if (Instance)
        return false;
    PROFILE_MEM(ContentAssets);

    // Try to scripting type for this data
    const StringAsANSI<> dataTypeNameAnsi(DataTypeName.Get(), DataTypeName.Length());
    const auto typeHandle = Scripting::FindScriptingType(StringAnsiView(dataTypeNameAnsi.Get(), DataTypeName.Length()));
    if (typeHandle)
    {
        auto& type = typeHandle.GetType();

        // Ensure that object can deserialized
        const ScriptingType::InterfaceImplementation* interface = type.GetInterface(ISerializable::TypeInitializer);
        if (!interface)
        {
            LOG(Warning, "Cannot deserialize {0} from Json Asset because it doesn't implement ISerializable interface.", type.ToString());
            return false;
        }
        auto modifier = Cache::ISerializeModifier.Get();
        modifier->EngineBuild = DataEngineBuild;

        // Create object
        switch (type.Type)
        {
        case ScriptingTypes::Class:
        case ScriptingTypes::Structure:
        {
            const auto instance = Allocator::Allocate(type.Size);
            if (!instance)
                return true;
            Instance = instance;
            if (type.Type == ScriptingTypes::Class)
            {
                _dtor = type.Class.Dtor;
                type.Class.Ctor(instance);
            }
            else
            {
                _dtor = type.Struct.Dtor;
                type.Struct.Ctor(instance);
            }

            // Deserialize object
            ((ISerializable*)((byte*)instance + interface->VTableOffset))->Deserialize(*Data, modifier.Value);
            break;
        }
        case ScriptingTypes::Script:
        {
            const ScriptingObjectSpawnParams params(Guid::New(), typeHandle);
            const auto instance = type.Script.Spawn(params);
            if (!instance)
                return true;
            Instance = instance;
            _dtor = nullptr;