plugins/org.eclipse.dltk.ruby.core/jruby/org/jruby/ast/NewlineNode.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>
 * Copyright (C) 2004 Charles O Nutter <headius@headius.com>
 * 
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 * 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"),
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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 new (logical) source code line.
 * This is used to change the value of the ruby interpreter        
 * source and line values.
 * There is one such node for each logical line.  Logical line differs
 * from physical line in that a ';' can be used to make several logical
 * line out of a physical line and a physical line if it is in a comment
 * or in a string does not necessarily correspond to a physical line.
 * This is normally a wrapper around another more significant node.
 * The parser generates such a node around each separate statement.  
 *
 * @author  jpetersen
 */
public class NewlineNode extends Node {
    static final long serialVersionUID = -6180129177863553832L;

    private final Node nextNode;

    public NewlineNode(ISourcePosition position, Node nextNode) {
        super(position, NodeTypes.NEWLINENODE);

        this.nextNode = nextNode;
    }

    /**
     * RubyMethod used by visitors.
     * accepts the visitor
     * @param iVisitor the visitor to accept
     **/
    public Instruction accept(NodeVisitor iVisitor) {
        return iVisitor.visitNewlineNode(this);
    }

    /**
     * Gets the nextNode.
     * @return Returns a Node
     */
    public Node getNextNode() {
        return nextNode;
    }
    
    public List childNodes() {
        return createList(nextNode);
    }


}