1 cananian 1.1.2.20 // Data.java, created Wed Sep 8 15:45:19 1999 by cananian
2 cananian 1.1.2.20 // Copyright (C) 1999 C. Scott Ananian <cananian@alumni.princeton.edu>
3 cananian 1.1.2.4 // Licensed under the terms of the GNU GPL; see COPYING for details.
4 duncan 1.1.2.1 package harpoon.IR.Tree;
5 duncan 1.1.2.1
6 duncan 1.1.2.1 import harpoon.Backend.Generic.Frame;
7 duncan 1.1.2.1 import harpoon.ClassFile.HClass;
8 cananian 1.1.2.22 import harpoon.ClassFile.HCode.PrintCallback;
9 duncan 1.1.2.1 import harpoon.ClassFile.HData;
10 cananian 1.1.2.20 import harpoon.ClassFile.HDataElement;
11 cananian 1.1.2.20 import harpoon.Temp.TempFactory;
12 pnkfelix 1.1.2.2
13 duncan 1.1.2.8 import java.util.Iterator;
14 duncan 1.1.2.1 import java.util.List;
15 duncan 1.1.2.1 /**
16 cananian 1.1.2.20 * <code>Data</code> is an abstract implementation of <code>HData</code>
17 cananian 1.1.2.20 * for <code>IR.Tree</code> form.
18 duncan 1.1.2.1 *
19 cananian 1.1.2.20 * @author C. Scott Ananian <cananian@alumni.princeton.edu>
20 cananian 1.4 * @version $Id: Data.java,v 1.4 2002/08/31 00:24:58 cananian Exp $
21 duncan 1.1.2.1 */
22 cananian 1.1.2.20 public abstract class Data extends harpoon.ClassFile.HData {
23 cananian 1.2.2.1 protected final String desc;
24 cananian 1.2.2.1 protected final Frame frame;
25 cananian 1.2.2.1 protected final TreeFactory tf;
26 cananian 1.1.2.20
27 cananian 1.4 /** Keep track of modifications to this <code>Data</code> so that the
28 cananian 1.4 * <code>getElementsI()</code> <code>Iterator</code> can fail-fast. */
29 cananian 1.4 protected int modCount=0;
30 cananian 1.4
31 cananian 1.1.2.20 /** Create a proper TreeFactory. */
32 cananian 1.1.2.20 protected class TreeFactory extends harpoon.IR.Tree.TreeFactory {
33 cananian 1.1.2.20 private int id=0;
34 cananian 1.1.2.20 TreeFactory() { }
35 cananian 1.1.2.21 /** No temp factory for Data */
36 cananian 1.1.2.21 public TempFactory tempFactory() { return null; }
37 cananian 1.1.2.20 /** Returns the <code>HCode</code> to which all
38 cananian 1.1.2.20 * <code>HDataElement</code>s generated by this factory belong. */
39 cananian 1.1.2.20 public Data getParent() { return Data.this; }
40 cananian 1.4 /** Indicate that the parent has changed, so that its
41 cananian 1.4 * fail-fast iterators will work correctly. */
42 cananian 1.4 void incModCount() { Data.this.modCount++; }
43 cananian 1.1.2.20 /** Returns the <code>HClass</code> to which all
44 cananian 1.1.2.20 * <code>HDataElement</code>s generated by this factory belong. */
45 cananian 1.1.2.20 public Frame getFrame() { return Data.this.frame; }
46 cananian 1.1.2.20 synchronized int getUniqueID() { return id++; }
47 cananian 1.1.2.20 public String toString() {
48 cananian 1.1.2.20 return "Data.TreeFactory["+getParent().toString()+"]";
49 duncan 1.1.2.1 }
50 cananian 1.1.2.20 public int hashCode() { return Data.this.hashCode(); }
51 duncan 1.1.2.1 }
52 cananian 1.1.2.21 protected Data(String desc, Frame f) {
53 cananian 1.1.2.20 this.desc = desc;
54 cananian 1.1.2.20 this.frame = f;
55 cananian 1.1.2.20 this.tf = new TreeFactory();
56 duncan 1.1.2.1 }
57 cananian 1.1.2.20 public String getDesc() { return desc; }
58 duncan 1.1.2.1
59 cananian 1.1.2.20 /** Print a human-readable representation of this dataview */
60 cananian 1.1.2.22 public void print(java.io.PrintWriter pw, PrintCallback callback) {
61 cananian 1.1.2.22 Print.print(pw, this, callback);
62 duncan 1.1.2.1 }
63 cananian 1.2 }