1 /*
2  * Copyright (C) 2015 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  * 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.caliper.platform.dalvik;
18 
19 import com.google.common.base.Optional;
20 
21 import dagger.Module;
22 import dagger.Provides;
23 
24 import javax.inject.Singleton;
25 
26 /**
27  * Provider of a {@link DalvikPlatform} instance.
28  *
29  * <p>The {@link DalvikPlatform} is optional as it is only available when running on Android.
30  */
31 @Module
32 public final class DalvikModule {
33 
34   @Provides
35   @Singleton
provideOptionalPlatform()36   public static Optional<DalvikPlatform> provideOptionalPlatform() {
37     if (System.getProperty("java.specification.name").equals("Dalvik Core Library")) {
38       return Optional.of(new DalvikPlatform());
39     } else {
40       return Optional.absent();
41     }
42   }
43 }
44