    001/*
    002 * Licensed to the Apache Software Foundation (ASF) under one or more
    003 * contributor license agreements.  See the NOTICE file distributed with
    004 * this work for additional information regarding copyright ownership.
    005 * The ASF licenses this file to You under the Apache License, Version 2.0
    006 * (the "License"); you may not use this file except in compliance with
    007 * the License.  You may obtain a copy of the License at
    008 *
    009 *      http://www.apache.org/licenses/LICENSE-2.0
    010 *
    011 *  Unless required by applicable law or agreed to in writing, software
    012 *  distributed under the License is distributed on an "AS IS" BASIS,
    013 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    014 *  See the License for the specific language governing permissions and
    015 *  limitations under the License.
    016 *
    017 */
    018package org.apache.bcel.generic;
    019
    020import org.apache.bcel.ExceptionConst;
    021
    022/**
    023 * ANEWARRAY -  Create new array of references
    024 * <PRE>Stack: ..., count -&gt; ..., arrayref</PRE>
    025 *
    026 * @version $Id$
    027 */
    028public class ANEWARRAY extends CPInstruction implements LoadClass, AllocationInstruction,
    029        ExceptionThrower, StackConsumer, StackProducer {
    030
    031    /**
    032     * Empty constructor needed for Instruction.readInstruction.
    033     * Not to be used otherwise.
    034     */
    035    ANEWARRAY() {
    036    }
    037
    038
    039    public ANEWARRAY(final int index) {
    040        super(org.apache.bcel.Const.ANEWARRAY, index);
    041    }
    042
    043
    044    @Override
    045    public Class<?>[] getExceptions() {
    046        return ExceptionConst.createExceptions(ExceptionConst.EXCS.EXCS_CLASS_AND_INTERFACE_RESOLUTION,
    047            ExceptionConst.NEGATIVE_ARRAY_SIZE_EXCEPTION);
    048    }
    049
    050
    051    /**
    052     * Call corresponding visitor method(s). The order is:
    053     * Call visitor methods of implemented interfaces first, then
    054     * call methods according to the class hierarchy in descending order,
    055     * i.e., the most specific visitXXX() call comes last.
    056     *
    057     * @param v Visitor object
    058     */
    059    @Override
    060    public void accept( final Visitor v ) {
    061        v.visitLoadClass(this);
    062        v.visitAllocationInstruction(this);
    063        v.visitExceptionThrower(this);
    064        v.visitStackProducer(this);
    065        v.visitTypedInstruction(this);
    066        v.visitCPInstruction(this);
    067        v.visitANEWARRAY(this);
    068    }
    069
    070
    071    @Override
    072    public ObjectType getLoadClassType( final ConstantPoolGen cpg ) {
    073        Type t = getType(cpg);
    074        if (t instanceof ArrayType) {
    075            t = ((ArrayType) t).getBasicType();
    076        }
    077        return (t instanceof ObjectType) ? (ObjectType) t : null;
    078    }
    079}