package jalview.datamodel;

/**
 * An immutable data bean that models a start-end range
 */
public class Range implements ContiguousI
{
  public final int start;

  public final int end;

  @Override
  public int getBegin()
  {
    return start;
  }

  @Override
  public int getEnd()
  {
    return end;
  }

  public Range(int i, int j)
  {
    start = i;
    end = j;
  }

  @Override
  public String toString()
  {
    return String.valueOf(start) + "-" + String.valueOf(end);
  }

  @Override
  public int hashCode()
  {
    return start * 31 + end;
  }

  @Override
  public boolean equals(Object obj)
  {
    if (obj instanceof Range)
    {
      Range r = (Range) obj;
      return (start == r.start && end == r.end);
    }
    return false;
  }
}