01: /*
02: * ProGuard -- shrinking, optimization, obfuscation, and preverification
03: * of Java bytecode.
04: *
05: * Copyright (c) 2002-2007 Eric Lafortune (eric@graphics.cornell.edu)
06: *
07: * This library is free software; you can redistribute it and/or modify it
08: * under the terms of the GNU General Public License as published by the Free
09: * Software Foundation; either version 2 of the License, or (at your option)
10: * any later version.
11: *
12: * This library is distributed in the hope that it will be useful, but WITHOUT
13: * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14: * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
15: * for more details.
16: *
17: * You should have received a copy of the GNU Lesser General Public License
18: * along with this library; if not, write to the Free Software Foundation,
19: * Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20: */
21: package proguard.classfile.constant;
22:
23: import proguard.classfile.*;
24: import proguard.classfile.constant.visitor.ConstantVisitor;
25:
26: /**
27: * This abstract class represents an entry in the ConstantPool. Specific types
28: * of entries are subclassed from it.
29: *
30: * @author Eric Lafortune
31: */
32: public abstract class Constant implements VisitorAccepter {
33: //public int u1tag;
34: //public byte info[];
35:
36: /**
37: * An extra field in which visitors can store information.
38: */
39: public Object visitorInfo;
40:
41: // Abstract methods to be implemented by extensions.
42:
43: /**
44: * Returns the constant pool info tag that specifies the entry type.
45: */
46: public abstract int getTag();
47:
48: /**
49: * Accepts the given visitor.
50: */
51: public abstract void accept(Clazz clazz,
52: ConstantVisitor constantVisitor);
53:
54: // Implementations for VisitorAccepter.
55:
56: public Object getVisitorInfo() {
57: return visitorInfo;
58: }
59:
60: public void setVisitorInfo(Object visitorInfo) {
61: this.visitorInfo = visitorInfo;
62: }
63: }
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