KickJava   Java API By Example, From Geeks To Geeks.

Java > Open Source Codes > gov > nasa > jpf > jvm > bytecode > NEWARRAY


1 //
2 // Copyright (C) 2005 United States Government as represented by the
3 // Administrator of the National Aeronautics and Space Administration
4 // (NASA). All Rights Reserved.
5 //
6 // This software is distributed under the NASA Open Source Agreement
7 // (NOSA), version 1.3. The NOSA has been approved by the Open Source
8 // Initiative. See the file NOSA-1.3-JPF at the top of the distribution
9 // directory tree for the complete NOSA document.
10 //
11 // THE SUBJECT SOFTWARE IS PROVIDED "AS IS" WITHOUT ANY WARRANTY OF ANY
12 // KIND, EITHER EXPRESSED, IMPLIED, OR STATUTORY, INCLUDING, BUT NOT
13 // LIMITED TO, ANY WARRANTY THAT THE SUBJECT SOFTWARE WILL CONFORM TO
14 // SPECIFICATIONS, ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR
15 // A PARTICULAR PURPOSE, OR FREEDOM FROM INFRINGEMENT, ANY WARRANTY THAT
16 // THE SUBJECT SOFTWARE WILL BE ERROR FREE, OR ANY WARRANTY THAT
17 // DOCUMENTATION, IF PROVIDED, WILL CONFORM TO THE SUBJECT SOFTWARE.
18 //
19 package gov.nasa.jpf.jvm.bytecode;
20
21 import gov.nasa.jpf.jvm.KernelState;
22 import gov.nasa.jpf.jvm.SystemState;
23 import gov.nasa.jpf.jvm.ThreadInfo;
24
25 import org.apache.bcel.Constants;
26 import org.apache.bcel.classfile.ConstantPool;
27 import gov.nasa.jpf.jvm.DynamicArea;
28 import gov.nasa.jpf.jvm.Types;
29
30
31 /**
32  * Create new array
33  * ..., count => ..., arrayref
34  */
35 public class NEWARRAY extends Instruction {
36   protected String JavaDoc type;
37
38   public void setPeer (org.apache.bcel.generic.Instruction i, ConstantPool cp) {
39     type = Constants.SHORT_TYPE_NAMES[((org.apache.bcel.generic.NEWARRAY) i).getTypecode()];
40   }
41
42   public Instruction execute (SystemState ss, KernelState ks, ThreadInfo ti) {
43     int size = ti.pop();
44     DynamicArea heap = DynamicArea.getHeap();
45     
46     if (heap.getOutOfMemory()) { // simulate OutOfMemoryError
47 return ti.createAndThrowException("java.lang.OutOfMemoryError",
48                                         "trying to allocate new " +
49                                           Types.getTypeName(type) +
50                                         "[" + size + "]");
51     }
52     
53     int arrayRef = heap.newArray(type, size, ti);
54     ti.push(arrayRef, true);
55
56     // th.push(ks.da.newArray(type, size, th), true);
57 return getNext(ti);
58   }
59
60   public int getByteCode () {
61     return 0xBC;
62   }
63 }
64
Popular Tags