Newtonsoft.Json.JsonTextReader.ShiftBufferIfNeeded C# (CSharp) Method

        private void ShiftBufferIfNeeded()
        {
            // once in the last 10% of the buffer shift the remaining content to the start to avoid
            // unnessesarly increasing the buffer size when reading numbers/strings
            int length = _chars.Length;
            if (length - _charPos <= length * 0.1)
            {
                int count = _charsUsed - _charPos;
                if (count > 0)
                {
                    BlockCopyChars(_chars, _charPos, _chars, 0, count);
                }

                _lineStartPos -= _charPos;
                _charPos = 0;
                _charsUsed = count;
                _chars[_charsUsed] = '\0';
            }
        }