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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
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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 Benoit Cerrina <b.cerrina@wanadoo.fr>
15  * Copyright (C) 2001-2002 Jan Arne Petersen <jpetersen@uni-bonn.de>
16  * Copyright (C) 2002 Anders Bengtsson <ndrsbngtssn@yahoo.se>
17  * Copyright (C) 2004 Thomas E Enebo <enebo@acm.org>
18  * Copyright (C) 2004 Stefan Matthias Aust <sma@3plus4.de>
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20  * Alternatively, the contents of this file may be used under the terms of
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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 /** Represents an #{} expression in a string. This Node is always a subnode
41  * of a DStrNode, DXStrNode or a DRegexpNode.
42  *
43  * Before this Node is evaluated it contains the code as a String (value). After
44  * the first evaluation this String is parsed into the evaluatedNode Node.
45  *
46  * @author jpetersen
47  */
48 public class EvStrNode extends Node {
49     static final long serialVersionUID = 1681935012117120817L;
50
51     private final Node body;
52
53     public EvStrNode(ISourcePosition position, Node body) {
54         super(position, NodeTypes.EVSTRNODE);
55         this.body = body;
56     }
57
58     /**
59      * Accept for the visitor pattern.
60      * @param iVisitor the visitor
61      **/
62     public Instruction accept(NodeVisitor iVisitor) {
63         return iVisitor.visitEvStrNode(this);
64     }
65
66     /**
67      * Gets the evaluatedNode.
68      * @return Returns a Node
69      */
70     public Node getBody() {
71         return body;
72     }
73     
74     public List JavaDoc childNodes() {
75         return createList(body);
76     }
77
78 }
79
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