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) 2001-2002 Jan Arne Petersen <jpetersen@uni-bonn.de>
15: * Copyright (C) 2002 Benoit Cerrina <b.cerrina@wanadoo.fr>
16: * Copyright (C) 2004-2005 Thomas E Enebo <enebo@acm.org>
17: *
18: * Alternatively, the contents of this file may be used under the terms of
19: * either of the GNU General Public License Version 2 or later (the "GPL"),
20: * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
21: * in which case the provisions of the GPL or the LGPL are applicable instead
22: * of those above. If you wish to allow use of your version of this file only
23: * under the terms of either the GPL or the LGPL, and not to allow others to
24: * use your version of this file under the terms of the CPL, indicate your
25: * decision by deleting the provisions above and replace them with the notice
26: * and other provisions required by the GPL or the LGPL. If you do not delete
27: * the provisions above, a recipient may use your version of this file under
28: * the terms of any one of the CPL, the GPL or the LGPL.
29: ***** END LICENSE BLOCK *****/package org.jruby.ast;
30:
31: import org.jruby.ast.types.IArityNode;
32: import org.jruby.lexer.yacc.ISourcePosition;
33: import org.jruby.runtime.Arity;
34:
35: /**
36: * Base class of any node which can be assigned to.
37: */
38: public abstract class AssignableNode extends Node implements IArityNode {
39: static final long serialVersionUID = 7997990944631594662L;
40:
41: private Node valueNode;
42:
43: public AssignableNode(ISourcePosition position, int id) {
44: super (position, id);
45: }
46:
47: /**
48: * Gets the valueNode.
49: * @return Returns a Node
50: */
51: public Node getValueNode() {
52: return valueNode;
53: }
54:
55: /**
56: * Sets the valueNode.
57: * @param valueNode The valueNode to set
58: */
59: public void setValueNode(Node valueNode) {
60: this .valueNode = valueNode;
61: }
62:
63: /**
64: * Almost all assignables are only assigned a single value.
65: */
66: public Arity getArity() {
67: return Arity.singleArgument();
68: }
69: }
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