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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 Chad Fowler <chadfowler@chadfowler.com>
15  * Copyright (C) 2001-2002 Benoit Cerrina <b.cerrina@wanadoo.fr>
16  * Copyright (C) 2001-2002 Jan Arne Petersen <jpetersen@uni-bonn.de>
17  * Copyright (C) 2002-2004 Anders Bengtsson <ndrsbngtssn@yahoo.se>
18  * Copyright (C) 2004 Thomas E Enebo <enebo@acm.org>
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"),
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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  * an 'if' statement.
42  * @author jpetersen
43  */
44 public class IfNode extends Node {
45     static final long serialVersionUID = -163780144332979551L;
46
47     private final Node condition;
48     private final Node thenBody;
49     private final Node elseBody;
50
51     public IfNode(ISourcePosition position, Node condition, Node thenBody, Node elseBody) {
52         super(position, NodeTypes.IFNODE);
53         this.condition = condition;
54         this.thenBody = thenBody;
55         this.elseBody = elseBody;
56     }
57
58     /**
59      * Accept for the visitor pattern.
60      * @param iVisitor the visitor
61      **/
62     public Instruction accept(NodeVisitor iVisitor) {
63         return iVisitor.visitIfNode(this);
64     }
65
66     /**
67      * Gets the condition.
68      * @return Returns a Node
69      */
70     public Node getCondition() {
71         return condition;
72     }
73
74     /**
75      * Gets the elseBody.
76      * @return Returns a Node
77      */
78     public Node getElseBody() {
79         return elseBody;
80     }
81
82     /**
83      * Gets the thenBody.
84      * @return Returns a Node
85      */
86     public Node getThenBody() {
87         return thenBody;
88     }
89     
90     public List JavaDoc childNodes() {
91         return Node.createList(condition, thenBody, elseBody);
92     }
93
94 }
95
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