private static int CompareBuildVersions(Maybe <string> leftVersion, Maybe <string> rightVersion)
{
if (leftVersion.None && rightVersion.None)
{
return(0); // equal if both absent
}
if (leftVersion.Any() && rightVersion.None)
{
return(1);
}
if (leftVersion.None && rightVersion.Any())
{
return(-1);
}
int result = CompareSegmentBySegment(leftVersion.Single(), rightVersion.Single());
return(result);
}
private static int ComparePrereleaseVersions(Maybe <string> leftVersion, Maybe <string> rightVersion)
{
// If the prerelease segment is absent in both instances, then they are considered equal.
if (leftVersion.None && rightVersion.None)
{
return(0);
}
// By definition, a prerelease version is less than the absence of a prerelease version - this is a bit counterintuitive.
if (leftVersion.Any() && rightVersion.None)
{
return(-1);
}
if (leftVersion.None && rightVersion.Any())
{
return(1);
}
int result = CompareSegmentBySegment(leftVersion.Single(), rightVersion.Single());
return(result);
}
private int MaybeHashCode(Maybe <string> item)
{
return(item.Any() ? item.Single().GetHashCode() : string.Empty.GetHashCode());
}
