Package bak.pcj.set

Source Code of bak.pcj.set.AbstractFloatSet

/*
*  Primitive Collections for Java.
*  Copyright (C) 2002, 2003  S�ren Bak
*
*  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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
*/
package bak.pcj.set;

import bak.pcj.AbstractFloatCollection;
import bak.pcj.FloatIterator;
import bak.pcj.hash.DefaultFloatHashFunction;

/**
*  This class represents an abstract base for implementing
*  sets of float values. All operations that can be implemented
*  using iterators and the <tt>get()</tt> and <tt>set()</tt> methods
*  are implemented as such. In most cases, this is
*  hardly an efficient solution, and at least some of those
*  methods should be overridden by sub-classes.
*
@author     S&oslash;ren Bak
@version    1.1     2003/1/10
@since      1.0
*/
public abstract class AbstractFloatSet extends AbstractFloatCollection implements FloatSet {

    /** Default constructor to be invoked by sub-classes. */
    protected AbstractFloatSet() { }

    public boolean equals(Object obj) {
        if (!(obj instanceof FloatSet))
            return false;
        FloatSet s = (FloatSet)obj;
        if (s.size() != size())
            return false;
        return containsAll(s);
    }

    public int hashCode() {
        int h = 0;
        FloatIterator i = iterator();
        while (i.hasNext())
            h += DefaultFloatHashFunction.INSTANCE.hash(i.next());
        return h;
    }

}
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