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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 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.types.ILiteralNode;
37 import org.jruby.ast.visitor.NodeVisitor;
38 import org.jruby.evaluator.Instruction;
39 import org.jruby.lexer.yacc.ISourcePosition;
40 import org.jruby.util.ByteList;
41
42 /** Representing a simple String literal.
43  *
44  * @author jpetersen
45  */
46 public class StrNode extends Node implements ILiteralNode {
47     static final long serialVersionUID = 4544779503072130759L;
48
49     private final ByteList value;
50
51     public StrNode(ISourcePosition position, ByteList value) {
52         super(position, NodeTypes.STRNODE);
53         this.value = value;
54     }
55
56     public StrNode(ISourcePosition position, StrNode head, StrNode tail) {
57         super(position, NodeTypes.STRNODE);
58         
59         // ENEBO: In this case do we really need to clone?
60 this.value = (ByteList) head.getValue().clone();
61         
62         value.append(tail.getValue());
63     }
64     /**
65      * Accept for the visitor pattern.
66      * @param iVisitor the visitor
67      **/
68     public Instruction accept(NodeVisitor iVisitor) {
69         return iVisitor.visitStrNode(this);
70     }
71
72     /**
73      * Gets the value.
74      * @return Returns a String
75      */
76     public ByteList getValue() {
77         return value;
78     }
79     
80     public List JavaDoc childNodes() {
81         return EMPTY_LIST;
82     }
83
84 }
85
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