KickJava   Java API By Example, From Geeks To Geeks.

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


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  * Copyright (C) 2004 Charles O Nutter <headius@headius.com>
19  *
20  * Alternatively, the contents of this file may be used under the terms of
21  * either of the GNU General Public License Version 2 or later (the "GPL"),
22  * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
23  * in which case the provisions of the GPL or the LGPL are applicable instead
24  * of those above. If you wish to allow use of your version of this file only
25  * under the terms of either the GPL or the LGPL, and not to allow others to
26  * use your version of this file under the terms of the CPL, indicate your
27  * decision by deleting the provisions above and replace them with the notice
28  * and other provisions required by the GPL or the LGPL. If you do not delete
29  * the provisions above, a recipient may use your version of this file under
30  * the terms of any one of the CPL, the GPL or the LGPL.
31  ***** END LICENSE BLOCK *****/
32 package org.jruby.ast;
33
34 import java.util.List JavaDoc;
35
36 import org.jruby.ast.visitor.NodeVisitor;
37 import org.jruby.evaluator.Instruction;
38 import org.jruby.lexer.yacc.ISourcePosition;
39
40 /**
41  * A new (logical) source code line.
42  * This is used to change the value of the ruby interpreter
43  * source and line values.
44  * There is one such node for each logical line. Logical line differs
45  * from physical line in that a ';' can be used to make several logical
46  * line out of a physical line and a physical line if it is in a comment
47  * or in a string does not necessarily correspond to a physical line.
48  * This is normally a wrapper around another more significant node.
49  * The parser generates such a node around each separate statement.
50  *
51  * @author jpetersen
52  */
53 public class NewlineNode extends Node {
54     static final long serialVersionUID = -6180129177863553832L;
55
56     private final Node nextNode;
57
58     public NewlineNode(ISourcePosition position, Node nextNode) {
59         super(position, NodeTypes.NEWLINENODE);
60
61         this.nextNode = nextNode;
62     }
63
64     /**
65      * RubyMethod used by visitors.
66      * accepts the visitor
67      * @param iVisitor the visitor to accept
68      **/
69     public Instruction accept(NodeVisitor iVisitor) {
70         return iVisitor.visitNewlineNode(this);
71     }
72
73     /**
74      * Gets the nextNode.
75      * @return Returns a Node
76      */
77     public Node getNextNode() {
78         return nextNode;
79     }
80     
81     public List JavaDoc childNodes() {
82         return createList(nextNode);
83     }
84
85
86 }
87
Popular Tags