1 /*
2  * Copyright 2021 The Android Open Source Project
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 sample.optin;
18 
19 import androidx.annotation.OptIn;
20 
21 /**
22  * Tests for calls made to members on an experimental class.
23  */
24 @SuppressWarnings({"unused", "WeakerAccess"})
25 class UseJavaExperimentalClassFromJava {
26 
27     /**
28      * Unsafe call into a field on an experimental class.
29      */
unsafeExperimentalClassField()30     int unsafeExperimentalClassField() {
31         AnnotatedJavaClass experimentalObject = new AnnotatedJavaClass();
32         return experimentalObject.field;
33     }
34 
35     /**
36      * Unsafe call into a method on an experimental class.
37      */
unsafeExperimentalClassMethod()38     int unsafeExperimentalClassMethod() {
39         AnnotatedJavaClass experimentalObject = new AnnotatedJavaClass();
40         return experimentalObject.method();
41     }
42 
43     /**
44      * Unsafe call into a static field on an experimental class.
45      */
unsafeExperimentalClassStaticField()46     int unsafeExperimentalClassStaticField() {
47         return AnnotatedJavaClass.FIELD_STATIC;
48     }
49 
50     /**
51      * Unsafe call into a static method on an experimental class.
52      */
unsafeExperimentalClassStaticMethod()53     int unsafeExperimentalClassStaticMethod() {
54         return AnnotatedJavaClass.methodStatic();
55     }
56 
57     /**
58      * Safe call due to propagation of experimental annotation.
59      */
60     @ExperimentalJavaAnnotation
safePropagateMarker()61     int safePropagateMarker() {
62         AnnotatedJavaClass experimentalObject = new AnnotatedJavaClass();
63         return experimentalObject.method();
64     }
65 
66     /**
67      * Safe call due to opting in to experimental annotation.
68      */
69     @OptIn(markerClass = ExperimentalJavaAnnotation.class)
safeOptInMarker()70     int safeOptInMarker() {
71         AnnotatedJavaClass experimentalObject = new AnnotatedJavaClass();
72         return experimentalObject.method();
73     }
74 }
75