public IEnumerable <Interval <string> > GetSyllables(string[] phonemicWord)
{
var start = 0;
var syllablePhonemes = new List <string>();
var lastPosition = SyllabicPosition.CODA;
string current = null;
for (int i = 0; i < phonemicWord.Length; i++)
{
current = phonemicWord[i];
if (i == 0)
{
if (IPA.IsVowel(current))
{
syllablePhonemes.Add(current);
lastPosition = SyllabicPosition.NUCLEUS;
}
else
{
syllablePhonemes.Add(current);
lastPosition = SyllabicPosition.ONSET;
}
}
else
{
var last = phonemicWord[i - 1];
var next = i < phonemicWord.Length - 1 ? phonemicWord[i + 1] : null;
if (next == null)
{ // Last phoneme of the word
if (IPA.IsVowel(current) && IPA.IsVowel(last))
{
yield return(new Interval <string>(start,
syllablePhonemes.Count,
IPA.IsLong(current) ? "long" : "short"));
start += syllablePhonemes.Count;
syllablePhonemes.Clear();
}
syllablePhonemes.Add(current);
yield return(new Interval <string>(start,
syllablePhonemes.Count,
!IPA.IsVowel(current) || IPA.IsLong(current) ? "long" : "short"));
}
else if (IPA.IsVowel(current))
{
if (IPA.IsVowel(last))
{
yield return(new Interval <string>(start,
syllablePhonemes.Count,
IPA.IsLong(last) ? "long" : "short"));
start += syllablePhonemes.Count;
syllablePhonemes.Clear();
}
syllablePhonemes.Add(current);
lastPosition = SyllabicPosition.NUCLEUS;
}
else
{
if (IPA.IsVowel(last))
{
if (IPA.IsVowel(next))
{
yield return(new Interval <string>(start,
syllablePhonemes.Count,
IPA.IsLong(last) ? "long" : "short"));
start += syllablePhonemes.Count;
syllablePhonemes.Clear();
syllablePhonemes.Add(current);
lastPosition = SyllabicPosition.ONSET;
}
else if (IsOnsetCluster(current, next))
{
yield return(new Interval <string>(start,
syllablePhonemes.Count,
IPA.IsLong(last) ? "long" : "short"));
start += syllablePhonemes.Count;
syllablePhonemes.Clear();
syllablePhonemes.Add(current);
lastPosition = SyllabicPosition.ONSET;
}
else
{
syllablePhonemes.Add(current);
lastPosition = SyllabicPosition.CODA;
}
}
else
{
if (IPA.IsVowel(next))
{
if (lastPosition == SyllabicPosition.CODA)
{
yield return(new Interval <string>(start,
syllablePhonemes.Count,
"long"));
start += syllablePhonemes.Count;
syllablePhonemes.Clear();
}
syllablePhonemes.Add(current);
lastPosition = SyllabicPosition.ONSET;
}
else
{
if (current == Phonemes.s)
{
syllablePhonemes.Add(current);
lastPosition = SyllabicPosition.CODA;
}
else
{
yield return(new Interval <string>(start,
syllablePhonemes.Count,
"long"));
start += syllablePhonemes.Count;
syllablePhonemes.Clear();
syllablePhonemes.Add(current);
lastPosition = SyllabicPosition.ONSET;
}
}
}
}
}
}
}