KickJava   Java API By Example, From Geeks To Geeks.

Java > Open Source Codes > org > jruby > ast > HashNode


1 /***** BEGIN LICENSE BLOCK *****
2  * Version: CPL 1.0/GPL 2.0/LGPL 2.1
3  *
4  * The contents of this file are subject to the Common Public
5  * License Version 1.0 (the "License"); you may not use this file
6  * except in compliance with the License. You may obtain a copy of
7  * the License at http://www.eclipse.org/legal/cpl-v10.html
8  *
9  * Software distributed under the License is distributed on an "AS
10  * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
11  * implied. See the License for the specific language governing
12  * rights and limitations under the License.
13  *
14  * Copyright (C) 2001-2002 Jan Arne Petersen <jpetersen@uni-bonn.de>
15  * Copyright (C) 2001-2002 Benoit Cerrina <b.cerrina@wanadoo.fr>
16  * Copyright (C) 2002 Anders Bengtsson <ndrsbngtssn@yahoo.se>
17  * Copyright (C) 2004 Thomas E Enebo <enebo@acm.org>
18  *
19  * Alternatively, the contents of this file may be used under the terms of
20  * either of the GNU General Public License Version 2 or later (the "GPL"),
21  * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
22  * in which case the provisions of the GPL or the LGPL are applicable instead
23  * of those above. If you wish to allow use of your version of this file only
24  * under the terms of either the GPL or the LGPL, and not to allow others to
25  * use your version of this file under the terms of the CPL, indicate your
26  * decision by deleting the provisions above and replace them with the notice
27  * and other provisions required by the GPL or the LGPL. If you do not delete
28  * the provisions above, a recipient may use your version of this file under
29  * the terms of any one of the CPL, the GPL or the LGPL.
30  ***** END LICENSE BLOCK *****/
31 package org.jruby.ast;
32
33 import java.util.List JavaDoc;
34
35 import org.jruby.ast.visitor.NodeVisitor;
36 import org.jruby.evaluator.Instruction;
37 import org.jruby.lexer.yacc.ISourcePosition;
38
39 /**
40  * a Literal Hash.
41  * this can represent either a {a=&amp;b, c=&amp;d} type expression or the list of default
42  * values in a method call.
43  * @author jpetersen
44  */
45 public class HashNode extends Node {
46     static final long serialVersionUID = -7554050553303344025L;
47
48     private final ListNode listNode;
49     
50     public HashNode(ISourcePosition position, ListNode listNode) {
51         super(position, NodeTypes.HASHNODE);
52         this.listNode = listNode;
53     }
54
55     /**
56      * Accept for the visitor pattern.
57      * @param iVisitor the visitor
58      **/
59     public Instruction accept(NodeVisitor iVisitor) {
60         return iVisitor.visitHashNode(this);
61     }
62
63     /**
64      * Gets the listNode.
65      * @return Returns a IListNode
66      */
67     public ListNode getListNode() {
68         return listNode;
69     }
70     
71     public List JavaDoc childNodes() {
72         return createList(listNode);
73     }
74
75 }
76
Popular Tags