/*
 * Copyright (c) 2007-2010 by The Broad Institute, Inc. and the Massachusetts Institute of Technology.
 * All Rights Reserved.
 *
 * This software is licensed under the terms of the GNU Lesser General Public License (LGPL), Version 2.1 which
 * is available at http://www.opensource.org/licenses/lgpl-2.1.php.
 *
 * THE SOFTWARE IS PROVIDED "AS IS." THE BROAD AND MIT MAKE NO REPRESENTATIONS OR WARRANTIES OF
 * ANY KIND CONCERNING THE SOFTWARE, EXPRESS OR IMPLIED, INCLUDING, WITHOUT LIMITATION, WARRANTIES
 * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, NONINFRINGEMENT, OR THE ABSENCE OF LATENT
 * OR OTHER DEFECTS, WHETHER OR NOT DISCOVERABLE.  IN NO EVENT SHALL THE BROAD OR MIT, OR THEIR
 * RESPECTIVE TRUSTEES, DIRECTORS, OFFICERS, EMPLOYEES, AND AFFILIATES BE LIABLE FOR ANY DAMAGES OF
 * ANY KIND, INCLUDING, WITHOUT LIMITATION, INCIDENTAL OR CONSEQUENTIAL DAMAGES, ECONOMIC
 * DAMAGES OR INJURY TO PROPERTY AND LOST PROFITS, REGARDLESS OF WHETHER THE BROAD OR MIT SHALL
 * BE ADVISED, SHALL HAVE OTHER REASON TO KNOW, OR IN FACT SHALL KNOW OF THE POSSIBILITY OF THE
 * FOREGOING.
 */

package org.broad.igv.util.index;


// Quick and dirty interval class
public class Interval implements Comparable {
    private final int low;
    private final int high;

    public Interval(int low, int high) {
        assert low <= high;
        this.low = low;
        this.high = high;
    }


    public boolean equals(Object other) {
        if (this == other)
            return true;
        if (this.getClass().equals(other.getClass())) {
            Interval otherInterval = (Interval) other;
            return (this.low == otherInterval.low &&
                    this.high == otherInterval.high);
        }
        return false;
    }


    public int hashCode() {
        return low;
    }


    public int compareTo(Object o) {
        Interval other = (Interval) o;
        if (this.low < other.low)
            return -1;
        if (this.low > other.low)
            return 1;

        if (this.high < other.high)
            return -1;
        if (this.high > other.high)
            return 1;

        return 0;
    }

    public String toString() {
        return "Interval[" + this.low + ", " + this.high + "]";
    }


    /**
     * Returns true if this interval overlaps the other.
     */
    public boolean overlaps(Interval other) {
        return (this.low <= other.high &&
                other.low <= this.high);
    }


    public int getLow() {
        return this.low;
    }

    public int getHigh() {
        return this.high;
    }
}

