1 /*
2  * Copyright (C) 2018 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 annotations;
18 
19 import java.lang.annotation.ElementType;
20 import java.lang.annotation.Retention;
21 import java.lang.annotation.RetentionPolicy;
22 import java.lang.annotation.Target;
23 import java.lang.invoke.CallSite;
24 import java.lang.invoke.MethodHandles.Lookup;
25 import java.lang.invoke.MethodType;
26 
27 /**
28  * Describes a bootstrap method that performs method handle resolution on behalf of an
29  * invoke-dynamic instruction.
30  */
31 @Retention(RetentionPolicy.RUNTIME)
32 @Target(ElementType.ANNOTATION_TYPE)
33 public @interface BootstrapMethod {
34     /** The class containing the bootstrap method. */
enclosingType()35     Class<?> enclosingType();
36 
37     /** The bootstrap method name. */
name()38     String name();
39 
40     /** The return type of the bootstrap method. */
returnType()41     Class<?> returnType() default CallSite.class;
42 
43     /** The parameter types of the bootstrap method. */
parameterTypes()44     Class<?>[] parameterTypes() default {Lookup.class, String.class, MethodType.class};
45 }
46