plugins/org.eclipse.dltk.ruby.core/jruby/org/jruby/ast/HashNode.java

/***** BEGIN LICENSE BLOCK *****
 * Version: CPL 1.0/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Common Public
 * License Version 1.0 (the "License"); you may not use this file
 * except in compliance with the License. You may obtain a copy of
 * the License at http://www.eclipse.org/legal/cpl-v10.html
 *
 * Software distributed under the License is distributed on an "AS
 * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
 * implied. See the License for the specific language governing
 * rights and limitations under the License.
 *
 * Copyright (C) 2001-2002 Jan Arne Petersen <jpetersen@uni-bonn.de>
 * Copyright (C) 2001-2002 Benoit Cerrina <b.cerrina@wanadoo.fr>
 * Copyright (C) 2002 Anders Bengtsson <ndrsbngtssn@yahoo.se>
 * Copyright (C) 2004 Thomas E Enebo <enebo@acm.org>
 * 
 * Alternatively, the contents of this file may be used under the terms of
 * either of the GNU General Public License Version 2 or later (the "GPL"),
 * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
 * in which case the provisions of the GPL or the LGPL are applicable instead
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package org.jruby.ast;

import java.util.List;

import org.jruby.ast.visitor.NodeVisitor;
import org.jruby.evaluator.Instruction;
import org.jruby.lexer.yacc.ISourcePosition;

/**
 * a Literal Hash.
 * this can represent either a {a=&amp;b, c=&amp;d} type expression or the list of default 
 * values in a method call.
 * @author  jpetersen
 */
public class HashNode extends Node {
    static final long serialVersionUID = -7554050553303344025L;

    private final ListNode listNode;
    
    public HashNode(ISourcePosition position, ListNode listNode) {
        super(position, NodeTypes.HASHNODE);
        this.listNode = listNode;
    }

    /**
     * Accept for the visitor pattern.
     * @param iVisitor the visitor
     **/
    public Instruction accept(NodeVisitor iVisitor) {
        return iVisitor.visitHashNode(this);
    }

    /**
     * Gets the listNode.
     * @return Returns a IListNode
     */
    public ListNode getListNode() {
        return listNode;
    }
    
    public List childNodes() {
        return createList(listNode);
    }

}