1 cananian 1.1.2.1 // NOP.java, created Tue Aug 25 03:01:12 1998 by cananian
 2 cananian 1.1.2.1 // Copyright (C) 1998 C. Scott Ananian <cananian@alumni.princeton.edu>
 3 cananian 1.1.2.1 // Licensed under the terms of the GNU GPL; see COPYING for details.
 4 cananian 1.1.2.1 package harpoon.IR.Quads;
 5 cananian 1.1.2.1 
 6 cananian 1.1.2.5 import harpoon.ClassFile.HCodeElement;
 7 cananian 1.1.2.1 import harpoon.Temp.TempMap;
 8 cananian 1.1.2.4 
 9 cananian 1.1.2.1 /**
10 cananian 1.1.2.1  * <code>NOP</code> nodes do nothing.
11 cananian 1.1.2.1  * 
12 cananian 1.1.2.1  * @author  C. Scott Ananian <cananian@alumni.princeton.edu>
13 cananian 1.3      * @version $Id: NOP.java,v 1.3 2002/04/11 04:00:34 cananian Exp $
14 cananian 1.1.2.1  */
15 cananian 1.1.2.1 public class NOP extends Quad {
16 cananian 1.1.2.1     
17 cananian 1.1.2.1     /** Creates a <code>NOP</code>. */
18 cananian 1.1.2.3     public NOP(QuadFactory qf, HCodeElement source) {
19 cananian 1.1.2.3         super(qf, source);
20 cananian 1.1.2.1     }
21 cananian 1.1.2.1 
22 cananian 1.1.2.2     public int kind() { return QuadKind.NOP; }
23 cananian 1.1.2.2 
24 cananian 1.1.2.4     public Quad rename(QuadFactory qqf, TempMap defMap, TempMap useMap) {
25 cananian 1.1.2.3         return new NOP(qqf, this);
26 cananian 1.1.2.2     }
27 cananian 1.1.2.4     /** Rename all used variables in this Quad according to a mapping.
28 cananian 1.1.2.4      * @deprecated does not preserve immutability. */
29 cananian 1.1.2.2     void renameUses(TempMap tm) { }
30 cananian 1.1.2.4     /** Rename all defined variables in this Quad according to a mapping.
31 cananian 1.1.2.4      * @deprecated does not preserve immutability. */
32 cananian 1.1.2.2     void renameDefs(TempMap tm) { }
33 cananian 1.1.2.1 
34 cananian 1.1.2.6     public void accept(QuadVisitor v) { v.visit(this); }
35 cananian 1.3         public <T> T accept(QuadValueVisitor<T> v) { return v.visit(this); }
36 cananian 1.1.2.1 
37 cananian 1.1.2.1     /** Returns human-readable representation. */
38 cananian 1.1.2.1     public String toString() { return "NOP"; }
39 cananian 1.2     }