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