AssetBundleGraph.Asset.DuplicateAsset C# (CSharp) Method

        public static Asset DuplicateAsset(Asset asset)
        {
            return new Asset(
                guid:asset.guid,
                assetDatabaseId:asset.assetDatabaseId,
                absoluteAssetPath:asset.absoluteAssetPath,
                importFrom:asset.importFrom,
                exportTo:asset.exportTo,
                assetType:asset.assetType,
                isNew:asset.isNew,
                isBundled:asset.isBundled,
                variantName:asset.variantName
            );
        }

        public void Setup(string nodeName, string nodeId, string connectionIdToNextNode, Dictionary <string, List <Asset> > groupedSources, List <string> alreadyCached, Action <string, string, Dictionary <string, List <Asset> >, List <string> > Output)
        {
            if (groupedSources.Keys.Count == 0)
            {
                return;
            }

            // Modifier merges multiple incoming groups into one.
            if (1 < groupedSources.Keys.Count)
            {
                Debug.LogWarning(nodeName + " Modifier merges incoming group into \"" + groupedSources.Keys.ToList()[0]);
            }

            var groupMergeKey = groupedSources.Keys.ToList()[0];

            // merge all assets into single list.
            var inputSources = new List <Asset>();

            foreach (var groupKey in groupedSources.Keys)
            {
                inputSources.AddRange(groupedSources[groupKey]);
            }

            if (!inputSources.Any())
            {
                return;
            }

            // initialize as object.
            var modifierType = string.Empty;

            var first = true;

            foreach (var inputSource in inputSources)
            {
                var modifyTargetAssetPath = inputSource.importFrom;
                var assumedType           = TypeUtility.FindTypeOfAsset(modifyTargetAssetPath);

                if (assumedType == null || assumedType == typeof(object))
                {
                    continue;
                }

                if (first)
                {
                    first        = false;
                    modifierType = assumedType.ToString();
                    continue;
                }

                if (modifierType != assumedType.ToString())
                {
                    throw new NodeException("multiple Asset Type detected. consider reduce Asset Type number to only 1 by Filter. detected Asset Types is:" + modifierType + " , and " + assumedType.ToString(), nodeId);
                }
            }

            // modifierType is fixed.

            if (!string.IsNullOrEmpty(specifiedScriptClass))
            {
                Debug.LogError("modifierのScript版実装中。");
                return;
            }

            // check support.
            if (!TypeUtility.SupportedModifierOperatorDefinition.ContainsKey(modifierType))
            {
                throw new NodeException("current incoming Asset Type:" + modifierType + " is unsupported.", nodeId);
            }

            // generate modifierOperatorData if data is not exist yet.
            {
                var modifierOperationDataFolderPath = AssetBundleGraphSettings.MODIFIER_OPERATOR_DATAS_PLACE;
                if (!Directory.Exists(modifierOperationDataFolderPath))
                {
                    Directory.CreateDirectory(modifierOperationDataFolderPath);
                }

                var opDataFolderPath = FileUtility.PathCombine(modifierOperationDataFolderPath, nodeId);
                if (!Directory.Exists(opDataFolderPath))
                {
                    Directory.CreateDirectory(opDataFolderPath);
                }

                // ready default platform path.
                var modifierOperatorDataPathForDefaultPlatform = FileUtility.PathCombine(opDataFolderPath, ModifierOperatiorDataName(AssetBundleGraphSettings.PLATFORM_DEFAULT_NAME));

                /*
                 *      create default platform ModifierOperatorData if not exist.
                 *      default ModifierOperatorData is the target platform for every platform by default.
                 */
                if (!File.Exists(modifierOperatorDataPathForDefaultPlatform))
                {
                    var operatorType = TypeUtility.SupportedModifierOperatorDefinition[modifierType];

                    var operatorInstance = Activator.CreateInstance(operatorType) as ModifierOperators.OperatorBase;

                    var defaultRenderTextureOp = operatorInstance.DefaultSetting();

                    /*
                     *      generated json data is typed as supported ModifierOperation type.
                     */
                    var jsonData   = JsonUtility.ToJson(defaultRenderTextureOp);
                    var prettified = AssetBundleGraphEditorWindow.PrettifyJson(jsonData);
                    using (var sw = new StreamWriter(modifierOperatorDataPathForDefaultPlatform)) {
                        sw.WriteLine(prettified);
                    }
                }
            }

            // validate saved data.
            ValidateModifiyOperationData(
                nodeId,
                currentPlatformStr,
                () => {
                throw new NodeException("No ModifierOperatorData found. please Setup first.", nodeId);
            },
                () => {
                /*do nothing.*/
            }
                );

            var outputSources = new List <Asset>();

            /*
             *      all assets types are same and do nothing to assets in setup.
             */
            foreach (var asset in inputSources)
            {
                outputSources.Add(Asset.DuplicateAsset(asset));
            }

            var outputDict = new Dictionary <string, List <Asset> >();

            outputDict[groupMergeKey] = outputSources;

            Output(nodeId, connectionIdToNextNode, outputDict, new List <string>());
        }