public ComparatorSet(string spec)
{
_comparators = new List <SemverComparator> {
};
spec = spec.Trim();
if (spec == "")
{
spec = "*";
}
int position = 0;
int end = spec.Length;
while (position < end)
{
int iterStartPosition = position;
// A comparator set might be an advanced range specifier
// like ~1.2.3, ^1.2, or 1.*.
// Check for these first before standard comparators:
foreach (var desugarer in new Func <string, Tuple <int, SemverComparator[]> >[] {
Desugarer.HyphenRange,
Desugarer.TildeRange,
Desugarer.CaretRange,
Desugarer.StarRange,
})
{
var result = desugarer(spec.Substring(position));
if (result != null)
{
position += result.Item1;
_comparators.AddRange(result.Item2);
}
}
// Check for standard comparator with operator and version:
var comparatorResult = SemverComparator.TryParse(spec.Substring(position));
if (comparatorResult != null)
{
position += comparatorResult.Item1;
_comparators.Add(comparatorResult.Item2);
}
if (position == iterStartPosition)
{
// Didn't manage to read any valid comparators
throw new ArgumentException(String.Format("Invalid range specification: \"{0}\"", spec));
}
}
}
private static SemverComparator[] minMaxComparators(SemanticVersion minVersion, SemanticVersion maxVersion,
SemverComparator.Operator maxOperator = SemverComparator.Operator.LessThan)
{
var minComparator = new SemverComparator(
SemverComparator.Operator.GreaterThanOrEqual,
minVersion);
if (maxVersion == null)
{
return(new[] { minComparator });
}
else
{
var maxComparator = new SemverComparator(
maxOperator, maxVersion);
return(new[] { minComparator, maxComparator });
}
}
