1 pnkfelix 1.1.2.1 // InstrEdge.java, created Fri Aug 27 18:43:54 1999 by pnkfelix
2 pnkfelix 1.1.2.1 // Copyright (C) 1999 Felix S. Klock II <pnkfelix@mit.edu>
3 pnkfelix 1.1.2.1 // Licensed under the terms of the GNU GPL; see COPYING for details.
4 pnkfelix 1.1.2.1 package harpoon.IR.Assem;
5 pnkfelix 1.1.2.1
6 duncan 1.1.2.5 import harpoon.IR.Properties.CFGEdge;
7 duncan 1.1.2.5 import harpoon.IR.Properties.CFGraphable;
8 pnkfelix 1.1.2.1
9 pnkfelix 1.1.2.1 /**
10 pnkfelix 1.1.2.1 * <code>InstrEdge</code> is an object representing an edge between
11 pnkfelix 1.1.2.1 * two <code>Instr</code>s.
12 pnkfelix 1.1.2.1 *
13 pnkfelix 1.1.2.1 * @author Felix S. Klock II <pnkfelix@mit.edu>
14 cananian 1.5 * @version $Id: InstrEdge.java,v 1.5 2003/05/09 16:35:26 cananian Exp $
15 pnkfelix 1.1.2.1 */
16 cananian 1.4 public class InstrEdge extends CFGEdge<Instr,InstrEdge> {
17 pnkfelix 1.1.2.1
18 pnkfelix 1.1.2.1 public final Instr from;
19 pnkfelix 1.1.2.1 public final Instr to;
20 pnkfelix 1.1.2.1
21 pnkfelix 1.1.2.1 /** Creates a <code>InstrEdge</code> representing
22 pnkfelix 1.1.2.1 <nobr> < from, to > </nobr>.
23 pnkfelix 1.1.2.1 */
24 pnkfelix 1.1.2.1 public InstrEdge(Instr from, Instr to) {
25 pnkfelix 1.1.2.1 this.from = from;
26 pnkfelix 1.1.2.1 this.to = to;
27 pnkfelix 1.1.2.1 }
28 pnkfelix 1.1.2.1
29 cananian 1.5 public Instr to() { return to; }
30 cananian 1.5 public Instr from() { return from; }
31 pnkfelix 1.1.2.2
32 pnkfelix 1.1.2.2 public boolean equals(Object o) {
33 pnkfelix 1.1.2.2 try {
34 pnkfelix 1.1.2.2 InstrEdge ie = (InstrEdge) o;
35 pnkfelix 1.1.2.2 return ie.to.equals(this.to) &&
36 pnkfelix 1.1.2.2 ie.from.equals(this.from);
37 pnkfelix 1.1.2.2 } catch (ClassCastException e) {
38 pnkfelix 1.1.2.2 return false;
39 pnkfelix 1.1.2.2 }
40 pnkfelix 1.1.2.3 }
41 pnkfelix 1.1.2.3 public int hashCode() {
42 pnkfelix 1.1.2.3 return to.hashCode() ^ from.hashCode();
43 pnkfelix 1.1.2.3 }
44 pnkfelix 1.1.2.3 public String toString() {
45 pnkfelix 1.1.2.4 return "InstrEdge:<\""+from+"\", \""+to+"\">"+
46 pnkfelix 1.1.2.3 " (<"+from.hashCode()+", "+to.hashCode()+">)";
47 pnkfelix 1.1.2.2 }
48 cananian 1.2 }