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Java > Open Source Codes > javassist > compiler > ast > Pair


1 /*
2  * Javassist, a Java-bytecode translator toolkit.
3  * Copyright (C) 1999-2005 Shigeru Chiba. All Rights Reserved.
4  *
5  * The contents of this file are subject to the Mozilla Public License Version
6  * 1.1 (the "License"); you may not use this file except in compliance with
7  * the License. Alternatively, the contents of this file may be used under
8  * the terms of the GNU Lesser General Public License Version 2.1 or later.
9  *
10  * Software distributed under the License is distributed on an "AS IS" basis,
11  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
12  * for the specific language governing rights and limitations under the
13  * License.
14  */
15
16 package javassist.compiler.ast;
17
18 import javassist.compiler.CompileError;
19
20 /**
21  * A node of a a binary tree. This class provides concrete methods
22  * overriding abstract methods in ASTree.
23  */
24 public class Pair extends ASTree {
25     protected ASTree left, right;
26
27     public Pair(ASTree _left, ASTree _right) {
28         left = _left;
29         right = _right;
30     }
31
32     public void accept(Visitor v) throws CompileError { v.atPair(this); }
33
34     public String JavaDoc toString() {
35         StringBuffer JavaDoc sbuf = new StringBuffer JavaDoc();
36         sbuf.append("(<Pair> ");
37         sbuf.append(left == null ? "<null>" : left.toString());
38         sbuf.append(" . ");
39         sbuf.append(right == null ? "<null>" : right.toString());
40         sbuf.append(')');
41         return sbuf.toString();
42     }
43
44     public ASTree getLeft() { return left; }
45
46     public ASTree getRight() { return right; }
47
48     public void setLeft(ASTree _left) { left = _left; }
49
50     public void setRight(ASTree _right) { right = _right; }
51 }
52
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