1 /* 2 * Copyright (c) 2017, 2020, Oracle and/or its affiliates. All rights reserved. 3 */ 4 /* 5 * Licensed to the Apache Software Foundation (ASF) under one or more 6 * contributor license agreements. See the NOTICE file distributed with 7 * this work for additional information regarding copyright ownership. 8 * The ASF licenses this file to You under the Apache License, Version 2.0 9 * (the "License"); you may not use this file except in compliance with 10 * the License. You may obtain a copy of the License at 11 * 12 * http://www.apache.org/licenses/LICENSE-2.0 13 * 14 * Unless required by applicable law or agreed to in writing, software 15 * distributed under the License is distributed on an "AS IS" BASIS, 16 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 17 * See the License for the specific language governing permissions and 18 * limitations under the License. 19 */ 20 21 package com.sun.org.apache.bcel.internal.generic; 22 23 import com.sun.org.apache.bcel.internal.ExceptionConst; 24 25 /** 26 * ARRAYLENGTH - Get length of array 27 * <PRE>Stack: ..., arrayref -> ..., length</PRE> 28 * 29 * @LastModified: Jun 2019 30 */ 31 public class ARRAYLENGTH extends Instruction 32 implements ExceptionThrower, StackProducer, StackConsumer /* since 6.0 */ { 33 34 /** Get length of array 35 */ ARRAYLENGTH()36 public ARRAYLENGTH() { 37 super(com.sun.org.apache.bcel.internal.Const.ARRAYLENGTH, (short) 1); 38 } 39 40 41 /** @return exceptions this instruction may cause 42 */ 43 @Override getExceptions()44 public Class<?>[] getExceptions() { 45 return new Class<?>[] { 46 ExceptionConst.NULL_POINTER_EXCEPTION 47 }; 48 } 49 50 51 /** 52 * Call corresponding visitor method(s). The order is: 53 * Call visitor methods of implemented interfaces first, then 54 * call methods according to the class hierarchy in descending order, 55 * i.e., the most specific visitXXX() call comes last. 56 * 57 * @param v Visitor object 58 */ 59 @Override accept( final Visitor v )60 public void accept( final Visitor v ) { 61 v.visitExceptionThrower(this); 62 v.visitStackProducer(this); 63 v.visitARRAYLENGTH(this); 64 } 65 } 66