public StringSegment(string source, int offset, int count)
{
this.source = source ?? _empty;
// Validate arguments, check is minimal instructions with reduced branching for inlinable fast-path
// Negative values discovered though conversion to high values when converted to unsigned
// Failure should be rare and location determination and message is delegated to failure functions
if ((uint)offset > (uint)this.source.Length || (uint)count > (uint)(this.source.Length - offset))
{
throw ThrowHelper.GetSegmentCtorValidationFailedException(this.source, offset, count);
}
this.HasSource = true;
this.Offset = offset;
this.Count = count;
}
