1   /*
2    * Copyright (C) 2008 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.testing;
18  
19  import com.google.common.annotations.GwtCompatible;
20  
21  /**
22   * Methods factored out so that they can be emulated differently in GWT.
23   *
24   * <p>This class is emulated in GWT.
25   *
26   * @author Hayward Chan
27   */
28  @GwtCompatible
29  final class Platform {
30  
31    /**
32     * Calls {@link Class#isInstance(Object)}.  Factored out so that it can be
33     * emulated in GWT.
34     *
35     * <p>This method always returns {@code true} in GWT.
36     */
37    static boolean checkIsInstance(Class<?> clazz, Object obj) {
38      return clazz.isInstance(obj);
39    }
40  
41    static <T> T[] clone(T[] array) {
42      return array.clone();
43    }
44  
45    // Class.cast is not supported in GWT.  This method is a no-op in GWT.
46    static void checkCast(Class<?> clazz, Object obj) {
47      clazz.cast(obj);
48    }
49  
50    static String format(String template, Object... args) {
51      return String.format(template, args);
52    }
53  
54    private Platform() {}
55  }