RefLit.java Source File

00001 package edu.ksu.cis.bandera.bir;
00002 
00003 /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
00004  * Bandera, a Java(TM) analysis and transformation toolkit           *
00005  * Copyright (C) 1998, 1999   James Corbett (corbett@hawaii.edu)     *
00006  * All rights reserved.                                              *
00007  *                                                                   *
00008  * This work was done as a project in the SAnToS Laboratory,         *
00009  * Department of Computing and Information Sciences, Kansas State    *
00010  * University, USA (http://www.cis.ksu.edu/santos).                  *
00011  * It is understood that any modification not identified as such is  *
00012  * not covered by the preceding statement.                           *
00013  *                                                                   *
00014  * This work is free software; you can redistribute it and/or        *
00015  * modify it under the terms of the GNU Library General Public       *
00016  * License as published by the Free Software Foundation; either      *
00017  * version 2 of the License, or (at your option) any later version.  *
00018  *                                                                   *
00019  * This work is distributed in the hope that it will be useful,      *
00020  * but WITHOUT ANY WARRANTY; without even the implied warranty of    *
00021  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU *
00022  * Library General Public License for more details.                  *
00023  *                                                                   *
00024  * You should have received a copy of the GNU Library General Public *
00025  * License along with this toolkit; if not, write to the             *
00026  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,      *
00027  * Boston, MA  02111-1307, USA.                                      *
00028  *                                                                   *
00029  * Java is a trademark of Sun Microsystems, Inc.                     *
00030  *                                                                   *
00031  * To submit a bug report, send a comment, or get the latest news on *
00032  * this project and other SAnToS projects, please visit the web-site *
00033  *                http://www.cis.ksu.edu/santos                      *
00034  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
00035 import ca.mcgill.sable.util.*;
00036 
00037 /**
00038  * A (non-null) reference value literal.
00039  * <p>
00040  * Can only appear in a BirState (i.e., not in the source of a transition 
00041  * system).
00042  */
00043 
00044 public class RefLit implements Literal {
00045 
00046     StateVar collection;
00047     int index;
00048     Ref type;
00049 
00050     public RefLit(StateVar collection, int index) {
00051     this.collection = collection;
00052     this.index = index;
00053     this.type = new Ref(collection);
00054     }
00055     public void apply(Switch sw)
00056     {
00057         ((ExprSwitch) sw).caseRefLit(this);
00058     }
00059     public StateVar getCollection() { return collection; }
00060     public int getIndex() { return index; }
00061     public Type getTargetType() { return type.getTargetType(); }
00062     public Type getType() { return type; }
00063     public String toString() {
00064     return collection.getName() + "#" + index;
00065     }
00066 }