ConstructorDeclarationComparator.java

/* 
  Copyright (C) 2013 Raquel Pau and Albert Coroleu.
 
 Walkmod is free software: you can redistribute it and/or modify
 it under the terms of the GNU Lesser General Public License as published by
 the Free Software Foundation, either version 3 of the License, or
 (at your option) any later version.
 
 Walkmod is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU Lesser General Public License for more details.
 
 You should have received a copy of the GNU Lesser General Public License
 along with Walkmod.  If not, see <http://www.gnu.org/licenses/>.*/
package org.walkmod.javalang.comparators;

import java.util.Comparator;
import java.util.Iterator;
import java.util.List;

import org.walkmod.javalang.ast.body.ConstructorDeclaration;
import org.walkmod.javalang.ast.body.Parameter;

public class ConstructorDeclarationComparator implements
		Comparator<ConstructorDeclaration> {

	@Override
	public int compare(ConstructorDeclaration o1, ConstructorDeclaration o2) {
		if (o1.getName().equals(o2.getName())) {
			List<Parameter> params1 = o1.getParameters();
			List<Parameter> params2 = o2.getParameters();
			if ((params1 == null || params1.size() == 0)
					&& (params2 == null || params2.size() == 0)) {
				return 0;
			} else if (params1 != null && params2 != null) {
				if (params1.size() == params2.size()) {
					Iterator<Parameter> itprms = o1.getParameters().iterator();
					Iterator<Parameter> itprms2 = o2.getParameters().iterator();
					boolean equalParams = false;
					while (itprms.hasNext() && itprms2.hasNext()
							&& !equalParams) {
						equalParams = itprms.next().getType().toString()
								.equals(itprms2.next().getType().toString());
					}
					if (equalParams)
						return 0;
					else
						return new Integer(params1.size()).compareTo(params2
								.size());
				} else {
					return new Integer(params1.size())
							.compareTo(params2.size());
				}
			}
		}
		return o1.getName().compareTo(o2.getName());
	}
}