/// <summary>
/// Set the internal word bounds (remove leading and trailing delimiters). Note, if a possessive is found, don't remove
/// it yet, simply note it.
/// </summary>
private void setBounds()
{
while (startBounds < length && (WordDelimiterFilter.isSubwordDelim(charType(text[startBounds]))))
{
startBounds++;
}
while (endBounds > startBounds && (WordDelimiterFilter.isSubwordDelim(charType(text[endBounds - 1]))))
{
endBounds--;
}
if (endsWithPossessive(endBounds))
{
hasFinalPossessive = true;
}
current = startBounds;
}
/// <summary>
/// Advance to the next subword in the string.
/// </summary>
/// <returns> index of the next subword, or <seealso cref="#DONE"/> if all subwords have been returned </returns>
internal int next()
{
current = end;
if (current == DONE)
{
return(DONE);
}
if (skipPossessive)
{
current += 2;
skipPossessive = false;
}
int lastType = 0;
while (current < endBounds && (WordDelimiterFilter.isSubwordDelim(lastType = charType(text[current]))))
{
current++;
}
if (current >= endBounds)
{
return(end = DONE);
}
for (end = current + 1; end < endBounds; end++)
{
int type_Renamed = charType(text[end]);
if (isBreak(lastType, type_Renamed))
{
break;
}
lastType = type_Renamed;
}
if (end < endBounds - 1 && endsWithPossessive(end + 2))
{
skipPossessive = true;
}
return(end);
}
/// <summary>
/// Determines if the text at the given position indicates an English possessive which should be removed
/// </summary>
/// <param name="pos"> Position in the text to check if it indicates an English possessive </param>
/// <returns> {@code true} if the text at the position indicates an English posessive, {@code false} otherwise </returns>
private bool endsWithPossessive(int pos)
{
return(stemEnglishPossessive && pos > 2 && text[pos - 2] == '\'' && (text[pos - 1] == 's' || text[pos - 1] == 'S') && WordDelimiterFilter.isAlpha(charType(text[pos - 3])) && (pos == endBounds || WordDelimiterFilter.isSubwordDelim(charType(text[pos]))));
}
