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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
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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>
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30 package org.jruby.ast;
31
32 import org.jruby.ast.types.IArityNode;
33 import org.jruby.lexer.yacc.ISourcePosition;
34 import org.jruby.runtime.Arity;
35
36 /**
37  * Base class of any node which can be assigned to.
38  */
39 public abstract class AssignableNode extends Node implements IArityNode {
40     static final long serialVersionUID= 7997990944631594662L;
41     
42     private Node valueNode;
43
44     public AssignableNode(ISourcePosition position, int id) {
45         super(position, id);
46     }
47
48     /**
49      * Gets the valueNode.
50      * @return Returns a Node
51      */
52     public Node getValueNode() {
53         return valueNode;
54     }
55
56     /**
57      * Sets the valueNode.
58      * @param valueNode The valueNode to set
59      */
60     public void setValueNode(Node valueNode) {
61         this.valueNode = valueNode;
62     }
63     
64     /**
65      * Almost all assignables are only assigned a single value.
66      */
67     public Arity getArity() {
68         return Arity.singleArgument();
69     }
70 }
71
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