Coverage Summary for Class: Platform (com.google.common.primitives)

1 /*
2  * Copyright (C) 2019 The Guava Authors
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
5  * in compliance with the License. You may obtain a copy of the License at
6  *
7  * http://www.apache.org/licenses/LICENSE-2.0
8  *
9  * Unless required by applicable law or agreed to in writing, software distributed under the License
10  * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
11  * or implied. See the License for the specific language governing permissions and limitations under
12  * the License.
13  */
14 
15 package com.google.common.primitives;
16 
17 import com.google.common.annotations.GwtCompatible;
18 
19 /** Methods factored out so that they can be emulated differently in GWT. */
20 @GwtCompatible(emulated = true)
21 @ElementTypesAreNonnullByDefault
22 final class Platform {
23   private static final java.util.logging.Logger logger =
24       java.util.logging.Logger.getLogger(Platform.class.getName());
25 
26   static void checkGwtRpcEnabled() {
27     String propertyName = "guava.gwt.emergency_reenable_rpc";
28 
29     if (!Boolean.parseBoolean(System.getProperty(propertyName, "false"))) {
30       throw new UnsupportedOperationException(
31           com.google.common.base.Strings.lenientFormat(
32               "We are removing GWT-RPC support for Guava types. You can temporarily reenable"
33                   + " support by setting the system property %s to true. For more about system"
34                   + " properties, see %s. For more about Guava's GWT-RPC support, see %s.",
35               propertyName,
36               "https://stackoverflow.com/q/5189914/28465",
37               "https://groups.google.com/d/msg/guava-announce/zHZTFg7YF3o/rQNnwdHeEwAJ"));
38     }
39     logger.log(
40         java.util.logging.Level.WARNING,
41         "Later in 2020, we will remove GWT-RPC support for Guava types. You are seeing this"
42             + " warning because you are sending a Guava type over GWT-RPC, which will break. You"
43             + " can identify which type by looking at the class name in the attached stack trace.",
44         new Throwable());
45   }
46 
47   private Platform() {}
48 }