/// <summary>
/// Converts a Protobuf <see cref="ProtobufDuration"/> to a Noda Time <see cref="NodaDuration"/>.
/// </summary>
/// <remarks>
/// Every valid Protobuf duration can be represented in Noda Time without loss of information.
/// </remarks>
/// <param name="duration">The duration to convert. Must not be null.</param>
/// <exception cref="ArgumentException"><paramref name="duration"/> represents an invalid duration.</exception>
/// <exception cref="ArgumentNullException"><paramref name="duration"/> is null.</exception>
/// <returns>The Noda Time representation.</returns>
public static NodaDuration ToNodaDuration(this ProtobufDuration duration)
{
Preconditions.CheckNotNull(duration, nameof(duration));
long seconds = duration.Seconds;
long nanos = duration.Nanos;
Preconditions.CheckArgument(
seconds >= ProtobufDuration.MinSeconds &&
seconds <= ProtobufDuration.MaxSeconds,
nameof(duration),
"duration.Seconds out of range: {0}",
seconds);
Preconditions.CheckArgument(
nanos > -ProtobufDuration.NanosecondsPerSecond &&
nanos < ProtobufDuration.NanosecondsPerSecond,
nameof(duration),
"duration.Nanos out of range: {0}",
nanos);
// If either sign is 0, we're fine. Otherwise, they should be the same. Multiplying them
// together seems the easiest way to check that.
Preconditions.CheckArgument(Math.Sign(seconds) * Math.Sign(nanos) != -1,
nameof(duration),
"duration.Seconds and duration.Nanos have different signs: {0}s {1}ns",
seconds, nanos);
return(NodaDuration.FromSeconds(seconds) + NodaDuration.FromNanoseconds(nanos));
}
/// <summary>
/// Converts the given <see cref="TimeSpan"/> to a <see cref="Duration"/>.
/// </summary>
/// <param name="timeSpan">The time span to convert.</param>
/// <returns>The converted duration.</returns>
public static Duration ToDuration(this TimeSpan timeSpan)
{
return(Duration.FromTimeSpan(timeSpan));
}