/// <summary>Returns the fully qualified type name of this instance.</summary>
/// <returns>The fully qualified type name.</returns>
public override string ToString()
{
if (!IsConstrained)
{
return(string.Empty);
}
// Use set notation for open/closed boundaries
var sb = new StringBuilder();
if (RangeOptions.HasFlag(RangeOptions.MinimumInclusive))
{
sb.Append("[");
}
else
{
sb.Append("(");
}
if (Minimum.HasValue)
{
sb.Append(Minimum.Value.ToString(CultureInfo.InvariantCulture));
}
else
{
sb.Append("-∞");
}
sb.Append(", ");
if (Maximum.HasValue)
{
sb.Append(Maximum.Value.ToString(CultureInfo.InvariantCulture));
}
else
{
sb.Append("∞");
}
if (RangeOptions.HasFlag(RangeOptions.MaximumInclusive))
{
sb.Append("]");
}
else
{
sb.Append(")");
}
if (MultipleOf.HasValue &&
MultipleOf.Value != 0)
{
sb.Append(" * ").Append(MultipleOf.Value.ToString(CultureInfo.InvariantCulture));
}
return(sb.ToString());
}
public Range(TValue start, TValue end, RangeOptions options)
{
if (options.HasFlag(RangeOptions.IsEmpty))
{
// clear other flags
_options = RangeOptions.IsEmpty;
Start = default(TValue);
End = default(TValue);
return;
}
if (ReferenceEquals(start, null))
{
options &= ~RangeOptions.HasStart;
}
if (ReferenceEquals(end, null))
{
options &= ~RangeOptions.HasEnd;
}
if (!options.HasFlag(RangeOptions.HasStart))
{
start = default(TValue);
options &= ~RangeOptions.IncludingStart;
}
if (!options.HasFlag(RangeOptions.HasEnd))
{
end = default(TValue);
options &= ~RangeOptions.IncludingEnd;
}
_options = options;
if (!options.HasFlag(RangeOptions.HasStart) || !options.HasFlag(RangeOptions.HasEnd))
{
Start = start;
End = end;
return;
}
Debug.Assert(start != null, "start != null");
var compare = start.CompareTo(end);
if (compare > 0)
{
throw new ArgumentException("'Start' must be less or equal to the 'End' parameter");
}
Start = start;
End = end;
if (compare == 0)
{
if (!(options.HasFlag(RangeOptions.IncludingStart) ||
options.HasFlag(RangeOptions.IncludingEnd)))
{
// empty
Start = default(TValue);
End = default(TValue);
_options = RangeOptions.IsEmpty;
}
else
{
// ensure that everything are included
_options |= RangeOptions.IncludingStart | RangeOptions.IncludingEnd;
}
}
}
