/**
    * The contents of this file are subject to the Mozilla Public License Version 1.1
    * (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.mozilla.org/MPL/
    * 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.
    *
    * The Original Code is ""  Description:
   * ""
   *
   * The Initial Developer of the Original Code is University Health Network. Copyright (C)
   * 2001.  All Rights Reserved.
   *
   * Contributor(s): ______________________________________.
   *
   * Alternatively, the contents of this file may be used under the terms of the
   * GNU General Public License (the  "GPL"), in which case the provisions of the GPL are
   * applicable instead of those above.  If you wish to allow use of your version of this
   * file only under the terms of the GPL and not to allow others to use your version
   * of this file under the MPL, indicate your decision by deleting  the provisions above
   * and replace  them with the notice and other provisions required by the GPL License.
   * If you do not delete the provisions above, a recipient may use your version of
   * this file under either the MPL or the GPL.
   */
  package ca.uhn.hl7v2.testpanel.util;
  
  import org.apache.commons.lang.Validate;
  
  public class Range {
  
  	private final int myEnd;
  	private final int myStart;
  
  	public Range(int theStartAndEnd) {
  		this(theStartAndEnd, theStartAndEnd);
  	}
  
  	public Range(int theStart, int theEnd) {
  		Validate.isTrue(theStart >= 0, "theStart: " + theStart);
  		Validate.isTrue(theEnd >= 0, "theEnd: " + theStart);
  
  		if (theStart > theEnd) {
  			myEnd = theStart;
  			myStart = theEnd;
  		} else {
  			myStart = theStart;
  			myEnd = theEnd;
  		}
  	}
  
  	public Range add(int theAmount) {
  		return new Range(myStart + theAmount, myEnd + theAmount);
  	}
  
  	public Range addToBoth(int theDelta) {
  		return new Range(myStart + theDelta, myEnd + theDelta);
  	}
  
  	public Range addToEnd(int theDelta) {
  		return new Range(myStart, myEnd + theDelta);
  	}
  
  	public String applyTo(String theMessage) {
  		int end = myEnd;
  		if (theMessage.length() < myEnd) {
  			end = theMessage.length();
  		}
  		return theMessage.substring(myStart, end);
  	}
  
  	public boolean contains(int theDot) {
  		return myStart <= theDot && myEnd >= theDot;
  	}
  
  	/**
  	 * {@inheritDoc}
  	 */
  	@Override
  	public boolean equals(Object theObj) {
  		if (theObj == null || (!(theObj instanceof Range))) {
  			return false;
  		}
  
  		Range o = (Range) theObj;
  		if (myStart != o.myStart) {
  			return false;
  		}
  		if (myEnd != o.myEnd) {
  			return false;
  		}
  
  		return true;
  	}
  
  	public int getDelta() {
  		return myEnd - myStart;
  	}
  
 	/**
 	 * @return the end
 	 */
 	public int getEnd() {
 		return myEnd;
 	}
 
 	/**
 	 * @return the start
 	 */
 	public int getStart() {
 		return myStart;
 	}
 
 	/**
 	 * {@inheritDoc}
 	 */
 	@Override
 	public int hashCode() {
 		return myStart * myEnd;
 	}
 
 	/**
 	 * {@inheritDoc}
 	 */
 	@Override
 	public String toString() {
 		return "Range[" + myStart + ", " + myEnd + "]";
 	}
 
 	public Rangef="../../../../../ca/uhn/hl7v2/testpanel/util/Range.html#Range">Range overlay(Range theRange) {
 		return new Range(Math.min(myStart, theRange.getStart()), Math.max(myEnd, theRange.getEnd()));
 	}
 
 }