SetCurrentIndex() public method

public SetCurrentIndex ( int index ) : void
index int
return void
示例#1
0
        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;
            }
        }
示例#2
0
        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;
            }
        }
示例#3
0
        int FindInWordSpans(WordVisitor visitor, WordGroup wordGroup)
        {
            WordSpan[] wordSpans = wordGroup.GetWordSpans();
            if (wordSpans == null)
            {
                throw new NotSupportedException();
            }

            //at this wordgroup
            //no subground anymore
            //so we should find the word one by one
            //start at prefix
            //and select the one that 

            int readLen = visitor.CurrentIndex - visitor.LatestBreakAt;
            int nwords = wordSpans.Length;
            //only 1 that match 

            TextBuffer currentTextBuffer = CurrentCustomDic.TextBuffer;

            //we sort unindex string ***
            //so we find from longest one( last) to begin 
            for (int i = nwords - 1; i >= 0; --i)
            {
                //loop test on each word
                WordSpan w = wordSpans[i];
#if DEBUG
                //string dbugstr = w.GetString(currentTextBuffer);
#endif

                int savedIndex = visitor.CurrentIndex;
                char c = visitor.Char;
                int wordLen = w.len;
                int matchCharCount = 0;
                if (wordLen > readLen)
                {
                    for (int p = readLen; p < wordLen; ++p)
                    {
                        char c2 = w.GetChar(p, currentTextBuffer);
                        if (c2 == c)
                        {
                            matchCharCount++;
                            //match 
                            //read next
                            if (!visitor.IsEnd)
                            {
                                visitor.SetCurrentIndex(visitor.CurrentIndex + 1);
                                c = visitor.Char;
                            }
                            else
                            {
                                //no more data in visitor

                                break;
                            }
                        }
                        else
                        {
                            break;
                        }
                    }
                }
                //reset
                if (readLen + matchCharCount == wordLen)
                {
                    int newBreakAt = visitor.LatestBreakAt + wordLen;
                    visitor.SetCurrentIndex(newBreakAt);
                    //-------------------------------------------- 
                    if (visitor.State == VisitorState.End)
                    {
                        return newBreakAt;
                    }
                    //check next char can be the char of new word or not
                    //this depends on each lang 
                    char canBeStartChar = visitor.Char;
                    if (CanHandle(canBeStartChar))
                    {
                        if (CanBeStartChar(canBeStartChar))
                        {
                            return newBreakAt;
                        }
                        else
                        {
                            //back to savedIndex
                            visitor.SetCurrentIndex(savedIndex);
                            return savedIndex;
                        }
                    }
                    else
                    {
                        visitor.State = VisitorState.OutOfRangeChar;
                        return newBreakAt;
                    }
                }
                visitor.SetCurrentIndex(savedIndex);
            }
            return 0;
        }
示例#4
0
        int FindInWordSpans(WordVisitor visitor, WordGroup wordGroup)
        {
            WordSpan[] wordSpans = wordGroup.GetWordSpans();
            if (wordSpans == null)
            {
                throw new NotSupportedException();
            }

            //at this wordgroup
            //no subground anymore
            //so we should find the word one by one
            //start at prefix
            //and select the one that

            int readLen = visitor.CurrentIndex - visitor.LatestBreakAt;
            int nwords  = wordSpans.Length;
            //only 1 that match

            TextBuffer currentTextBuffer = CurrentCustomDic.TextBuffer;

            //we sort unindex string ***
            //so we find from longest one( last) to begin
            for (int i = nwords - 1; i >= 0; --i)
            {
                //loop test on each word
                WordSpan w = wordSpans[i];
#if DEBUG
                //string dbugstr = w.GetString(currentTextBuffer);
#endif

                int  savedIndex     = visitor.CurrentIndex;
                char c              = visitor.Char;
                int  wordLen        = w.len;
                int  matchCharCount = 0;
                if (wordLen > readLen)
                {
                    for (int p = readLen; p < wordLen; ++p)
                    {
                        char c2 = w.GetChar(p, currentTextBuffer);
                        if (c2 == c)
                        {
                            matchCharCount++;
                            //match
                            //read next
                            if (!visitor.IsEnd)
                            {
                                visitor.SetCurrentIndex(visitor.CurrentIndex + 1);
                                c = visitor.Char;
                            }
                            else
                            {
                                //no more data in visitor

                                break;
                            }
                        }
                        else
                        {
                            break;
                        }
                    }
                }
                //reset
                if (readLen + matchCharCount == wordLen)
                {
                    int newBreakAt = visitor.LatestBreakAt + wordLen;
                    visitor.SetCurrentIndex(newBreakAt);
                    //--------------------------------------------
                    if (visitor.State == VisitorState.End)
                    {
                        return(newBreakAt);
                    }
                    //check next char can be the char of new word or not
                    //this depends on each lang
                    char canBeStartChar = visitor.Char;
                    if (CanHandle(canBeStartChar))
                    {
                        if (CanBeStartChar(canBeStartChar))
                        {
                            return(newBreakAt);
                        }
                        else
                        {
                            //back to savedIndex
                            visitor.SetCurrentIndex(savedIndex);
                            return(savedIndex);
                        }
                    }
                    else
                    {
                        visitor.State = VisitorState.OutOfRangeChar;
                        return(newBreakAt);
                    }
                }
                visitor.SetCurrentIndex(savedIndex);
            }
            return(0);
        }