DefinedNode.java

  1. /*
  2.  ***** BEGIN LICENSE BLOCK *****
  3.  * Version: EPL 1.0/GPL 2.0/LGPL 2.1
  4.  *
  5.  * The contents of this file are subject to the Eclipse Public
  6.  * License Version 1.0 (the "License"); you may not use this file
  7.  * except in compliance with the License. You may obtain a copy of
  8.  * the License at http://www.eclipse.org/legal/epl-v10.html
  9.  *
  10.  * Software distributed under the License is distributed on an "AS
  11.  * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
  12.  * implied. See the License for the specific language governing
  13.  * rights and limitations under the License.
  14.  *
  15.  * Copyright (C) 2001 Chad Fowler <chadfowler@chadfowler.com>
  16.  * Copyright (C) 2001-2002 Benoit Cerrina <b.cerrina@wanadoo.fr>
  17.  * Copyright (C) 2001-2002 Jan Arne Petersen <jpetersen@uni-bonn.de>
  18.  * Copyright (C) 2002 Anders Bengtsson <ndrsbngtssn@yahoo.se>
  19.  * Copyright (C) 2004 Thomas E Enebo <enebo@acm.org>
  20.  *
  21.  * Alternatively, the contents of this file may be used under the terms of
  22.  * either of the GNU General Public License Version 2 or later (the "GPL"),
  23.  * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
  24.  * in which case the provisions of the GPL or the LGPL are applicable instead
  25.  * of those above. If you wish to allow use of your version of this file only
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  27.  * use your version of this file under the terms of the EPL, indicate your
  28.  * decision by deleting the provisions above and replace them with the notice
  29.  * and other provisions required by the GPL or the LGPL. If you do not delete
  30.  * the provisions above, a recipient may use your version of this file under
  31.  * the terms of any one of the EPL, the GPL or the LGPL.
  32.  ***** END LICENSE BLOCK *****/
  33. package org.jruby.ast;

  34. import java.util.List;

  35. import org.jruby.ast.visitor.NodeVisitor;
  36. import org.jruby.lexer.yacc.ISourcePosition;

  37. /**
  38.  * a defined statement.
  39.  */
  40. public class DefinedNode extends Node {
  41.     private final Node expressionNode;

  42.     public DefinedNode(ISourcePosition position, Node expressionNode) {
  43.         super(position);
  44.        
  45.         assert expressionNode != null : "expressionNode is not null";
  46.        
  47.         this.expressionNode = expressionNode;
  48.     }

  49.     public NodeType getNodeType() {
  50.         return NodeType.DEFINEDNODE;
  51.     }

  52.     /**
  53.      * Accept for the visitor pattern.
  54.      * @param iVisitor the visitor
  55.      **/
  56.     public <T> T accept(NodeVisitor<T> iVisitor) {
  57.         return iVisitor.visitDefinedNode(this);
  58.     }

  59.     /**
  60.      * Gets the expressionNode.
  61.      * @return Returns a Node
  62.      */
  63.     public Node getExpressionNode() {
  64.         return expressionNode;
  65.     }
  66.    
  67.     public List<Node> childNodes() {
  68.         return createList(expressionNode);
  69.     }
  70. }