public DifferentState GetByIndex(int index) { #if USE_HASH_TABLE DifferentState retval = (DifferentState)_table[index]; if (retval == null) { retval = new DifferentState(); _table.Add(index,retval); } #else DifferentState retval = _array[index]; if (retval == null) { retval = new DifferentState(); _array[index] = retval; } #endif return retval; }
private void GetLongestSourceMatch(DifferentState curItem, int destIndex, int destEnd, int sourceStart, int sourceEnd) { int maxDestLength = (destEnd - destIndex) + 1; int curLength = 0; int curBestLength = 0; int curBestIndex = -1; int maxLength = 0; for (int sourceIndex = sourceStart; sourceIndex <= sourceEnd; sourceIndex++) { maxLength = Math.Min(maxDestLength, (sourceEnd - sourceIndex) + 1); if (maxLength <= curBestLength) { //No chance to find a longer one any more break; } curLength = GetSourceMatchLength(destIndex, sourceIndex, maxLength); if (curLength > curBestLength) { //This is the best match so far curBestIndex = sourceIndex; curBestLength = curLength; } //jump over the match sourceIndex += curBestLength; } //DiffState cur = _stateList.GetByIndex(destIndex); if (curBestIndex == -1) { curItem.SetNotMatched(); } else { curItem.SetMatched(curBestIndex, curBestLength); } }