BeforeFirstMethodInClassOffsetProvider.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) 2006 Lukas Felber <lfelber@hsr.ch>
 * Copyright (C) 2006 Mirko Stocker <me@misto.ch>
 * Copyright (C) 2006 Thomas Corbat <tcorbat@hsr.ch>
 * 
 * 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"),
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package org.rubypeople.rdt.refactoring.offsetprovider;

import org.jruby.ast.DefnNode;
import org.jruby.ast.ModuleNode;
import org.jruby.ast.Node;
import org.rubypeople.rdt.refactoring.core.NodeProvider;
import org.rubypeople.rdt.refactoring.nodewrapper.ClassNodeWrapper;
import org.rubypeople.rdt.refactoring.nodewrapper.PartialClassNodeWrapper;

public class BeforeFirstMethodInClassOffsetProvider extends OffsetProvider {

    private Node bodyNode;
    private Node declEndNode;
	
	public BeforeFirstMethodInClassOffsetProvider(ClassNodeWrapper classNode, String document) {
		this(classNode.getFirstPartialClassNode(), document);
	}
	
	public BeforeFirstMethodInClassOffsetProvider(PartialClassNodeWrapper classPart, String document){
		super(document);
		this.bodyNode = classPart.getClassBodyNode();
		this.declEndNode = classPart.getDeclarationEndNode();
	}
	
	public BeforeFirstMethodInClassOffsetProvider(ModuleNode classNode, String document){
		super(document);
		this.bodyNode = classNode.getBodyNode();
		this.declEndNode = classNode.getCPath();
	}

	@Override
	public Node getInsertAfterNode() {
		if (NodeProvider.hasChildNode(bodyNode, DefnNode.class)) {
			Node contentNode = bodyNode;
			Node firstMethodNode = NodeProvider.getFirstChildNode(contentNode, DefnNode.class);
			if (NodeProvider.hasNodeBefore(contentNode, firstMethodNode)) {
				return NodeProvider.getNodeBefore(contentNode, firstMethodNode);
			}
			return declEndNode;
		}
		return bodyNode;
	}

}