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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) 2001-2002 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>
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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 Case statement.
41  *
42  * Represents a complete case statement, including the body with its
43  * when statements.
44  *
45  * @author jpetersen
46  */
47 public class CaseNode extends Node {
48     static final long serialVersionUID = -2824917272720800901L;
49
50     /**
51      * the case expression.
52      **/
53     private final Node caseNode;
54     /**
55      * the body of the case.
56      */
57     private final Node caseBody;
58     
59     public CaseNode(ISourcePosition position, Node caseNode, Node caseBody) {
60         super(position, NodeTypes.CASENODE);
61         this.caseNode = caseNode;
62         this.caseBody = caseBody;
63     }
64
65     /**
66      * Accept for the visitor pattern.
67      * @param iVisitor the visitor
68      **/
69     public Instruction accept(NodeVisitor iVisitor) {
70         return iVisitor.visitCaseNode(this);
71     }
72
73     /**
74      * Gets the caseNode.
75      * caseNode is the case expression
76      * @return caseNode
77      */
78     public Node getCaseNode() {
79         return caseNode;
80     }
81
82     /**
83      * Gets the first whenNode.
84      * the body of the case statement, the first of a list of WhenNodes
85      * @return whenNode
86      */
87     public Node getFirstWhenNode() {
88         return caseBody;
89     }
90     
91     public List JavaDoc childNodes() {
92         return Node.createList(caseNode, caseBody);
93     }
94
95 }
96
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