1 /* 2 * Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved. 3 * @LastModified: Oct 2017 4 */ 5 /* 6 * Licensed to the Apache Software Foundation (ASF) under one or more 7 * contributor license agreements. See the NOTICE file distributed with 8 * this work for additional information regarding copyright ownership. 9 * The ASF licenses this file to You under the Apache License, Version 2.0 10 * (the "License"); you may not use this file except in compliance with 11 * the License. You may obtain a copy of the License at 12 * 13 * http://www.apache.org/licenses/LICENSE-2.0 14 * 15 * Unless required by applicable law or agreed to in writing, software 16 * distributed under the License is distributed on an "AS IS" BASIS, 17 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 18 * See the License for the specific language governing permissions and 19 * limitations under the License. 20 */ 21 22 package com.sun.org.apache.bcel.internal.generic; 23 24 import com.sun.org.apache.bcel.internal.ExceptionConst; 25 26 /** 27 * ARRAYLENGTH - Get length of array 28 * <PRE>Stack: ..., arrayref -> ..., length</PRE> 29 * 30 * @version $Id: ARRAYLENGTH.java 1747278 2016-06-07 17:28:43Z britter $ 31 */ 32 public class ARRAYLENGTH extends Instruction 33 implements ExceptionThrower, StackProducer, StackConsumer /* since 6.0 */ { 34 35 /** Get length of array 36 */ 37 public ARRAYLENGTH() { 38 super(com.sun.org.apache.bcel.internal.Const.ARRAYLENGTH, (short) 1); 39 } 40 41 42 /** @return exceptions this instruction may cause 43 */ 44 @Override 45 public Class<?>[] getExceptions() { 46 return new Class<?>[] { 47 ExceptionConst.NULL_POINTER_EXCEPTION 48 }; 49 } 50 51 52 /** 53 * Call corresponding visitor method(s). The order is: 54 * Call visitor methods of implemented interfaces first, then 55 * call methods according to the class hierarchy in descending order, 56 * i.e., the most specific visitXXX() call comes last. 57 * 58 * @param v Visitor object 59 */ 60 @Override 61 public void accept( final Visitor v ) { 62 v.visitExceptionThrower(this); 63 v.visitStackProducer(this); 64 v.visitARRAYLENGTH(this); 65 } 66 }