1 /*
   2  * reserved comment block
   3  * DO NOT REMOVE OR ALTER!
   4  */
   5 package com.sun.org.apache.bcel.internal.generic;
   6 
   7 /* ====================================================================
   8  * The Apache Software License, Version 1.1
   9  *
  10  * Copyright (c) 2001 The Apache Software Foundation.  All rights
  11  * reserved.
  12  *
  13  * Redistribution and use in source and binary forms, with or without
  14  * modification, are permitted provided that the following conditions
  15  * are met:
  16  *
  17  * 1. Redistributions of source code must retain the above copyright
  18  *    notice, this list of conditions and the following disclaimer.
  19  *
  20  * 2. Redistributions in binary form must reproduce the above copyright
  21  *    notice, this list of conditions and the following disclaimer in
  22  *    the documentation and/or other materials provided with the
  23  *    distribution.
  24  *
  25  * 3. The end-user documentation included with the redistribution,
  26  *    if any, must include the following acknowledgment:
  27  *       "This product includes software developed by the
  28  *        Apache Software Foundation (http://www.apache.org/)."
  29  *    Alternately, this acknowledgment may appear in the software itself,
  30  *    if and wherever such third-party acknowledgments normally appear.
  31  *
  32  * 4. The names "Apache" and "Apache Software Foundation" and
  33  *    "Apache BCEL" must not be used to endorse or promote products
  34  *    derived from this software without prior written permission. For
  35  *    written permission, please contact apache@apache.org.
  36  *
  37  * 5. Products derived from this software may not be called "Apache",
  38  *    "Apache BCEL", nor may "Apache" appear in their name, without
  39  *    prior written permission of the Apache Software Foundation.
  40  *
  41  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
  42  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  43  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  44  * DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
  45  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  46  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  47  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
  48  * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  49  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  50  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
  51  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  52  * SUCH DAMAGE.
  53  * ====================================================================
  54  *
  55  * This software consists of voluntary contributions made by many
  56  * individuals on behalf of the Apache Software Foundation.  For more
  57  * information on the Apache Software Foundation, please see
  58  * <http://www.apache.org/>.
  59  */
  60 import com.sun.org.apache.bcel.internal.ExceptionConstants;
  61 
  62 /**
  63  * ANEWARRAY -  Create new array of references
  64  * <PRE>Stack: ..., count -&gt; ..., arrayref</PRE>
  65  *
  66  * @author  <A HREF="mailto:markus.dahm@berlin.de">M. Dahm</A>
  67  */
  68 public class ANEWARRAY extends CPInstruction
  69   implements LoadClass, AllocationInstruction, ExceptionThrower, StackProducer {
  70   /**
  71    * Empty constructor needed for the Class.newInstance() statement in
  72    * Instruction.readInstruction(). Not to be used otherwise.
  73    */
  74   ANEWARRAY() {}
  75 
  76   public ANEWARRAY(int index) {
  77     super(com.sun.org.apache.bcel.internal.Constants.ANEWARRAY, index);
  78   }
  79 
  80   public Class[] getExceptions(){
  81     Class[] cs = new Class[1 + ExceptionConstants.EXCS_CLASS_AND_INTERFACE_RESOLUTION.length];
  82 
  83     System.arraycopy(ExceptionConstants.EXCS_CLASS_AND_INTERFACE_RESOLUTION, 0,
  84                      cs, 0, ExceptionConstants.EXCS_CLASS_AND_INTERFACE_RESOLUTION.length);
  85     cs[ExceptionConstants.EXCS_CLASS_AND_INTERFACE_RESOLUTION.length] =
  86       ExceptionConstants.NEGATIVE_ARRAY_SIZE_EXCEPTION;
  87     return cs;
  88   }
  89 
  90   /**
  91    * Call corresponding visitor method(s). The order is:
  92    * Call visitor methods of implemented interfaces first, then
  93    * call methods according to the class hierarchy in descending order,
  94    * i.e., the most specific visitXXX() call comes last.
  95    *
  96    * @param v Visitor object
  97    */
  98   public void accept(Visitor v) {
  99     v.visitLoadClass(this);
 100     v.visitAllocationInstruction(this);
 101     v.visitExceptionThrower(this);
 102     v.visitStackProducer(this);
 103     v.visitTypedInstruction(this);
 104     v.visitCPInstruction(this);
 105     v.visitANEWARRAY(this);
 106   }
 107 
 108   public ObjectType getLoadClassType(ConstantPoolGen cpg) {
 109     Type t = getType(cpg);
 110 
 111     if (t instanceof ArrayType){
 112       t = ((ArrayType) t).getBasicType();
 113     }
 114 
 115     return (t instanceof ObjectType)? (ObjectType) t : null;
 116   }
 117 }