1 /* 2 * Copyright (C) 2009 The Guava Authors 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 * http://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 com.google.common.collect; 18 19 import com.google.common.annotations.GwtCompatible; 20 21 import java.lang.reflect.Array; 22 23 // TODO(kevinb): guava javadoc path seems set wrong, doesn't find that last 24 // import 25 /** 26 * Version of {@link GwtPlatform} used in hosted-mode. It includes methods in 27 * {@link Platform} that requires different implementions in web mode and 28 * hosted mode. It is factored out from {@link Platform} because {@code 29 * GwtScriptOnly} (which is applied to the emul version) supports only public 30 * classes and methods. 31 * 32 * @author Hayward Chan 33 */ 34 // TODO(hhchan): Once we start using server-side source in hosted mode, we won't 35 // need this. 36 @GwtCompatible(emulated = true) 37 public final class GwtPlatform { 38 39 private GwtPlatform() {} 40 41 /** See {@link Platform#newArray(Object[], int)} */ 42 public static <T> T[] newArray(T[] reference, int length) { 43 Class<?> type = reference.getClass().getComponentType(); 44 45 // the cast is safe because 46 // result.getClass() == reference.getClass().getComponentType() 47 @SuppressWarnings("unchecked") 48 T[] result = (T[]) Array.newInstance(type, length); 49 return result; 50 } 51 } 52
