private static HashSet <string> GetExcludedSamples(SampleExclusionParameters parameters)
{
if (parameters.Disabled)
{
return(new HashSet <string>(StringComparer.Ordinal));
}
var existingSamples = GetSamples(
parameters.SampleSize,
parameters.BeginAnchor,
parameters.EndAnchor,
parameters.GetMinWordSize(),
parameters.StartIndex,
parameters.Length);
var possibleSamples = GetAllPossibleSamples(parameters.SampleSize, parameters.BeginAnchor, parameters.EndAnchor);
foreach (var s in possibleSamples)
{
if (!existingSamples.ContainsKey(s))
{
existingSamples.Add(s, 0);
}
}
var excludedSamples = new HashSet <string>(
existingSamples
.Where(d => d.Value <= parameters.MaxCount)
.Select(kv => kv.Key),
StringComparer.Ordinal);
return(excludedSamples);
}