/*
 * GNU LESSER GENERAL PUBLIC LICENSE Copyright (C) 2006 The Lobo Project
 * 
 * This library 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 2.1 of
 * the License, or (at your option) any later version.
 * 
 * This library 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 this library; if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA
 * 
 * Contact info: xamjadmin@users.sourceforge.net
 */
/*
 * Created on Apr 10, 2005
 */
package org.cobra_grendel.util;

/**
 * @author J. H. S.
 */
public class Objects
{
    public static boolean areAssignableTo(final Object[] objects, final Class[] types)
    {
        int length = objects.length;
        if (length != types.length)
        {
            return false;
        }
        for (int i = 0; i < length; i++)
        {
            if (!isAssignableOrBox(objects[i], types[i]))
            {
                return false;
            }
        }
        return true;
    }

    public static boolean equals(final Object obj1, final Object obj2)
    {
        return obj1 == null ? obj2 == null : obj1.equals(obj2);
    }

    public static boolean isAssignableOrBox(final Object value, final Class clazz)
    {
        return clazz.isInstance(value)
                        || clazz.isPrimitive()
                        && (clazz == double.class && value instanceof Double || clazz == int.class && value instanceof Integer || clazz == byte.class && value instanceof Byte || clazz == boolean.class && value instanceof Boolean || clazz == char.class
                                        && value instanceof Character || clazz == short.class && value instanceof Short || clazz == long.class && value instanceof Long || clazz == float.class && value instanceof Float) || isNumeric(clazz) && isNumeric(value);
    }

    public static boolean isBoxClass(final Class clazz)
    {
        return clazz == Integer.class || clazz == Boolean.class || clazz == Double.class || clazz == Float.class || clazz == Long.class || clazz == Byte.class || clazz == Short.class || clazz == Character.class;
    }

    private static boolean isNumeric(final Class clazz)
    {
        return Number.class.isAssignableFrom(clazz) || clazz.isPrimitive() && (clazz == int.class || clazz == double.class || clazz == byte.class || clazz == short.class || clazz == float.class || clazz == long.class);
    }

    private static boolean isNumeric(final Object value)
    {
        if (value == null)
        {
            return false;
        }
        return isNumeric(value.getClass());
    }

    /**
	 * 
	 */
    private Objects()
    {
    }
}