1 /* 2 * Copyright 2017 Google Inc. 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * https://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package trebuchet.importers 18 19 import trebuchet.io.StreamingReader 20 import trebuchet.model.fragments.ModelFragment 21 22 interface Importer { 23 /** 24 * Produces a ModelFragment from the given DataStream. The importer may return null at any point if it 25 * is unable to process the stream for whatever reason. 26 * 27 * @param stream The stream to read from 28 * @return A ModelFragment built from the input, or null if the importer was unable to import 29 */ importnull30 fun import(stream: StreamingReader): ModelFragment? 31 }