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Java > Open Source Codes > org > aspectj > compiler > base > bcg > pool > FieldrefConstant


1 /* -*- tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
2  *
3  * This file is part of the compiler and core tools for the AspectJ(tm)
4  * programming language; see http://aspectj.org
5  *
6  * The contents of this file are subject to the Mozilla Public License
7  * Version 1.1 (the "License"); you may not use this file except in
8  * compliance with the License. You may obtain a copy of the License at
9  * either http://www.mozilla.org/MPL/ or http://aspectj.org/MPL/.
10  *
11  * Software distributed under the License is distributed on an "AS IS" basis,
12  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
13  * for the specific language governing rights and limitations under the
14  * License.
15  *
16  * The Original Code is AspectJ.
17  *
18  * The Initial Developer of the Original Code is Xerox Corporation. Portions
19  * created by Xerox Corporation are Copyright (C) 1999-2002 Xerox Corporation.
20  * All Rights Reserved.
21  *
22  * Contributor(s):
23  */

24
25 package org.aspectj.compiler.base.bcg.pool;
26
27 import org.aspectj.compiler.base.bcg.*;
28
29 import java.io.*;
30 import java.util.*;
31
32 import org.aspectj.compiler.base.ast.ArrayType;
33 import org.aspectj.compiler.base.ast.NameType;
34 import org.aspectj.compiler.base.ast.RefType;
35
36 public class FieldrefConstant extends Constant {
37     ClassConstant _class;
38     FieldrefConstant() {}
39     NameAndTypeConstant signature;
40     FieldrefConstant(ClassConstant _class,
41                      NameAndTypeConstant signature) {
42         this._class = _class;
43         this.signature = signature;
44     }
45     void writeTo(DataOutputStream stream) throws IOException {
46         stream.writeByte(FIELD_REF_TAG);
47         _class.writeIndex(stream);
48         signature.writeIndex(stream);
49     }
50
51     public String JavaDoc toString() {
52         return rep(getIndex(),
53                    "(fieldref " + _class + " " + signature + ")");
54     }
55     public boolean equals(Object JavaDoc other) {
56         if (! (other instanceof FieldrefConstant)) return false;
57         FieldrefConstant o = (FieldrefConstant) other;
58         return _class == o._class && signature == o.signature;
59     }
60     public int hashCode() {
61         return _class.hashCode() + signature.hashCode() + FIELD_REF_TAG;
62     }
63
64     void readFrom(DataInputStream stream, ConstantPool pool) throws IOException {
65         _class =
66             (ClassConstant) pool.get(stream.readUnsignedShort(), new ClassConstant());
67         signature =
68             (NameAndTypeConstant) pool.get(stream.readUnsignedShort(), new NameAndTypeConstant());
69     }
70 }
71
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