/// <summary>
/// Determines the relative position compared to the other <see cref="ITemporalPrimitive" /> instance.
/// </summary>
/// <param name="other">The other instance.</param>
/// <returns>The <see cref="RelativePosition" /> of this instance compared to the other.</returns>
/// <exception cref="System.ArgumentNullException">The other instance is null.</exception>
/// <exception cref="System.ArgumentException">The other instance is not valid.</exception>
public RelativePosition RelativePosition(ITemporalPrimitive other)
{
if (other == null)
{
throw new ArgumentNullException("other", "The other instance is null.");
}
if (!other.IsValid)
{
throw new ArgumentException("The other instance is not valid.", "other");
}
if (ReferenceEquals(other, this))
{
return(Temporal.RelativePosition.Equals);
}
if (other is Instant)
{
return(RelativePosition((Instant)other));
}
else if (other is Period)
{
return(RelativePosition((Period)other));
}
else
{
return(Temporal.RelativePosition.Undefined);
}
}
/// <summary>
/// Computes the distance to the other <see cref="ITemporalPrimitive" /> instance.
/// </summary>
/// <param name="other">The other instance.</param>
/// <returns>The distance to the other <see cref="ITemporalPrimitive" /> instance.</returns>
/// <exception cref="System.ArgumentNullException">The other instance is null.</exception>
/// <exception cref="System.ArgumentException">The other instance is not valid.</exception>
public Duration Distance(ITemporalPrimitive other)
{
if (other == null)
{
throw new ArgumentNullException("other", "The other instance is null.");
}
if (!other.IsValid)
{
throw new ArgumentException("The other instance is not valid.", "other");
}
if (ReferenceEquals(other, this))
{
return(Duration.Zero);
}
if (other is Instant)
{
return(new Duration(((Instant)other)._ticks - _ticks));
}
else if (other is Period)
{
return(Distance((Period)other));
}
else
{
return(Duration.MinValue);
}
}
/// <summary>
/// Indicates whether this instance and a specified <see cref="ITemporalPrimitive" /> are equal.
/// </summary>
/// <param name="another">Another <see cref="ITemporalPrimitive" /> to compare to.</param>
/// <returns><c>true</c> if <paramref name="another" /> and this instance are the same type and represent the same value; otherwise, <c>false</c>.</returns>
public Boolean Equals(ITemporalPrimitive another)
{
if (ReferenceEquals(another, null))
{
return(false);
}
if (ReferenceEquals(another, this))
{
return(true);
}
return(((another is Instant) && _ticks == ((Instant)another)._ticks) ||
((another is Period) && _ticks == ((Period)another).Begin._ticks && _ticks == ((Period)another).End._ticks));
}
