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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 }