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 24 /** 25 * This annotation can be set on method to specify that if this method 26 * is statically invoked then the invocation is replaced by a 27 * load-constant bytecode with the MethodHandle constant described by 28 * the annotation. 29 */ 30 @Retention(RetentionPolicy.RUNTIME) 31 @Target(ElementType.METHOD) 32 public @interface ConstantMethodHandle { 33 /* Method handle kinds */ 34 public static final int STATIC_PUT = 0; 35 public static final int STATIC_GET = 1; 36 public static final int INSTANCE_PUT = 2; 37 public static final int INSTANCE_GET = 3; 38 public static final int INVOKE_STATIC = 4; 39 public static final int INVOKE_VIRTUAL = 5; 40 public static final int INVOKE_SPECIAL = 6; 41 public static final int NEW_INVOKE_SPECIAL = 7; 42 public static final int INVOKE_INTERFACE = 8; 43 44 /** Kind of method handle. */ kind()45 int kind(); 46 47 /** Class name owning the field or method. */ owner()48 String owner(); 49 50 /** The field or method name addressed by the MethodHandle. */ fieldOrMethodName()51 String fieldOrMethodName(); 52 53 /** Descriptor for the field (type) or method (method-type) */ descriptor()54 String descriptor(); 55 56 /** Whether the owner is an interface. */ ownerIsInterface()57 boolean ownerIsInterface() default false; 58 } 59