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Java > Open Source Codes > soot > grimp > internal > GArrayRef


1 /* Soot - a J*va Optimization Framework
2  * Copyright (C) 1999 Patrick Lam
3  *
4  * This library is free software; you can redistribute it and/or
5  * modify it under the terms of the GNU Lesser General Public
6  * License as published by the Free Software Foundation; either
7  * version 2.1 of the License, or (at your option) any later version.
8  *
9  * This library is distributed in the hope that it will be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12  * Lesser General Public License for more details.
13  *
14  * You should have received a copy of the GNU Lesser General Public
15  * License along with this library; if not, write to the
16  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
17  * Boston, MA 02111-1307, USA.
18  */
19
20 /*
21  * Modified by the Sable Research Group and others 1997-1999.
22  * See the 'credits' file distributed with Soot for the complete list of
23
24   * contributors. (Soot is distributed at http://www.sable.mcgill.ca/soot)
25  */
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32 package soot.grimp.internal;
33
34 import soot.*;
35 import soot.grimp.*;
36 import soot.util.*;
37 import java.util.*;
38 import soot.jimple.*;
39 import soot.jimple.internal.*;
40
41 public class GArrayRef extends JArrayRef implements Precedence
42 {
43   public GArrayRef(Value base, Value index)
44     {
45       super(Grimp.v().newObjExprBox(base),
46             Grimp.v().newExprBox(index));
47     }
48   
49   public int getPrecedence() { return 950; }
50
51   private String JavaDoc toString(Value op1,
52                           String JavaDoc leftOp, String JavaDoc rightOp)
53     {
54       if (op1 instanceof Precedence &&
55           ((Precedence)op1).getPrecedence() < getPrecedence())
56         leftOp = "(" + leftOp + ")";
57       
58       return leftOp + "[" + rightOp + "]";
59     }
60
61     public void toString( UnitPrinter up ) {
62         if( PrecedenceTest.needsBrackets( baseBox, this ) ) up.literal("(");
63         baseBox.toString(up);
64         if( PrecedenceTest.needsBrackets( baseBox, this ) ) up.literal(")");
65         up.literal("[");
66         indexBox.toString(up);
67         up.literal("]");
68     }
69
70   public String JavaDoc toString()
71     {
72       Value op1 = getBase(), op2 = getIndex();
73       String JavaDoc leftOp = op1.toString(), rightOp = op2.toString();
74       
75       return toString(op1, leftOp, rightOp);
76     }
77
78     public Object JavaDoc clone()
79     {
80         return new GArrayRef(Grimp.cloneIfNecessary(getBase()), Grimp.cloneIfNecessary(getIndex()));
81     }
82
83   }
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