01: /***** BEGIN LICENSE BLOCK *****
02: * Version: CPL 1.0/GPL 2.0/LGPL 2.1
03: *
04: * The contents of this file are subject to the Common Public
05: * License Version 1.0 (the "License"); you may not use this file
06: * except in compliance with the License. You may obtain a copy of
07: * the License at http://www.eclipse.org/legal/cpl-v10.html
08: *
09: * 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 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"),
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 *****/package org.jruby.ast;
32:
33: import java.util.List;
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 defined statement.
41: * @author jpetersen
42: */
43: public class DefinedNode extends Node {
44: static final long serialVersionUID = -6942286690645861964L;
45:
46: private final Node expressionNode;
47:
48: public DefinedNode(ISourcePosition position, Node expressionNode) {
49: super (position, NodeTypes.DEFINEDNODE);
50: this .expressionNode = expressionNode;
51: }
52:
53: /**
54: * Accept for the visitor pattern.
55: * @param iVisitor the visitor
56: **/
57: public Instruction accept(NodeVisitor iVisitor) {
58: return iVisitor.visitDefinedNode(this );
59: }
60:
61: /**
62: * Gets the expressionNode.
63: * @return Returns a Node
64: */
65: public Node getExpressionNode() {
66: return expressionNode;
67: }
68:
69: public List childNodes() {
70: return createList(expressionNode);
71: }
72:
73: }
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