public void AddWordBreakAt(int index)
{
#if DEBUG
if (index == latestBreakAt)
{
throw new NotSupportedException();
}
#endif
this.latestBreakAt = index;
breakAtList.Add(index);
}
public int LatestBreakAt public override void BreakWord(WordVisitor visitor, char[] charBuff, int startAt, int len)
{
visitor.State = VisitorState.Parsing;
char c_first = this.FirstUnicodeChar;
char c_last = this.LastUnicodeChar;
int endAt = startAt + len;
Stack<int> candidate = visitor.GetTempCandidateBreaks();
for (int i = startAt; i < endAt; )
{
//find proper start words;
char c = charBuff[i];
//----------------------
//check if c is in our responsiblity
if (c < c_first || c > c_last)
{
//out of our range
//should return ?
visitor.State = VisitorState.OutOfRangeChar;
return;
}
//----------------------
WordGroup wordgroup = GetWordGroupForFirstChar(c);
if (wordgroup == null)
{
//continue next char
++i;
visitor.AddWordBreakAt(i);
visitor.SetCurrentIndex(visitor.LatestBreakAt);
}
else
{
//check if we can move next
if (visitor.IsEnd)
{
visitor.State = VisitorState.End;
return;
}
//---------------------
WordGroup c_wordgroup = wordgroup;
candidate.Clear();
int candidateLen = 1;
if (c_wordgroup.PrefixIsWord)
{
candidate.Push(candidateLen);
}
bool continueRead = true;
int savedIndex = visitor.CurrentIndex;
while (continueRead)
{
//not end
//then move next
candidateLen++;
visitor.SetCurrentIndex(i + 1);
WordGroup next = GetSubGroup(visitor, c_wordgroup);
//for debug
//string prefix = (next == null) ? "" : next.GetPrefix(CurrentCustomDic.TextBuffer);
if (next != null)
{
if (next.PrefixIsWord)
{
candidate.Push(candidateLen);
}
c_wordgroup = next;
i = visitor.CurrentIndex;
}
else
{
continueRead = false;
//no deeper group
//then check if
if (c_wordgroup.WordSpanListCount > 0)
{
int p1 = visitor.CurrentIndex;
//p2: suggest position
int p2 = FindInWordSpans(visitor, c_wordgroup);
if (p2 - p1 > 0)
{
visitor.AddWordBreakAt(p2);
visitor.SetCurrentIndex(p2);
}
else
{
//on the same pos
if (visitor.State == VisitorState.OutOfRangeChar)
{
return;
}
else
{
bool foundCandidate = false;
while (candidate.Count > 0)
{
int candi1 = candidate.Pop();
//try
visitor.SetCurrentIndex(visitor.LatestBreakAt + candi1);
//check if we can use this candidate
char next_char = visitor.Char;
if (CanBeStartChar(next_char))
{
//use this
//use this candidate if possible
visitor.AddWordBreakAt(visitor.CurrentIndex);
foundCandidate = true;
break;
}
}
if (!foundCandidate)
{
//no next word, no candidate
//skip this
char next_char = visitor.Char;
if (CanBeStartChar(next_char))
{
//use this
//use this candidate if possible
visitor.AddWordBreakAt(visitor.CurrentIndex);
foundCandidate = true;
break;
}
else
{
//TODO: review here
visitor.SetCurrentIndex(visitor.LatestBreakAt + 1);
visitor.AddWordBreakAt(visitor.CurrentIndex);
visitor.SetCurrentIndex(visitor.LatestBreakAt);
}
}
}
}
}
else
{
bool foundCandidate = false;
while (candidate.Count > 0)
{
int candi1 = candidate.Pop();
//try
visitor.SetCurrentIndex(visitor.LatestBreakAt + candi1);
if (visitor.State == VisitorState.End)
{
visitor.AddWordBreakAt(visitor.CurrentIndex);
return;
}
//check if we can use this candidate
char next_char = visitor.Char;
if (!CanHandle(next_char))
{
//use this
//use this candidate if possible
visitor.AddWordBreakAt(visitor.CurrentIndex);
foundCandidate = true;
break;
}
if (CanBeStartChar(next_char))
{
//use this
//use this candidate if possible
visitor.AddWordBreakAt(visitor.CurrentIndex);
foundCandidate = true;
break;
}
}
if (!foundCandidate)
{
if (candidateLen > 0)
{
//use that candidate len
visitor.AddWordBreakAt(visitor.CurrentIndex);
visitor.SetCurrentIndex(visitor.LatestBreakAt);
}
}
}
i = visitor.CurrentIndex;
}
}
}
}
//------
if (visitor.CurrentIndex >= len - 1)
{
//the last one
visitor.State = VisitorState.End;
}
}