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

        private void ParseString(char quote, ReadType readType)
        {
            _charPos++;

            ShiftBufferIfNeeded();
            ReadStringIntoBuffer(quote);
            SetPostValueState(true);

            switch (readType)
            {
                case ReadType.ReadAsBytes:
                    Guid g;
                    byte[] data;
                    if (_stringReference.Length == 0)
                    {
                        data = new byte[0];
                    }
                    else if (_stringReference.Length == 36 && ConvertUtils.TryConvertGuid(_stringReference.ToString(), out g))
                    {
                        data = g.ToByteArray();
                    }
                    else
                    {
                        data = Convert.FromBase64CharArray(_stringReference.Chars, _stringReference.StartIndex, _stringReference.Length);
                    }

                    SetToken(JsonToken.Bytes, data, false);
                    break;
                case ReadType.ReadAsString:
                    string text = _stringReference.ToString();

                    SetToken(JsonToken.String, text, false);
                    _quoteChar = quote;
                    break;
                case ReadType.ReadAsInt32:
                case ReadType.ReadAsDecimal:
                case ReadType.ReadAsBoolean:
                    // caller will convert result
                    break;
                default:
                    if (_dateParseHandling != DateParseHandling.None)
                    {
                        DateParseHandling dateParseHandling;
                        if (readType == ReadType.ReadAsDateTime)
                        {
                            dateParseHandling = DateParseHandling.DateTime;
                        }
#if !NET20
                        else if (readType == ReadType.ReadAsDateTimeOffset)
                        {
                            dateParseHandling = DateParseHandling.DateTimeOffset;
                        }
#endif
                        else
                        {
                            dateParseHandling = _dateParseHandling;
                        }

                        if (dateParseHandling == DateParseHandling.DateTime)
                        {
                            DateTime dt;
                            if (DateTimeUtils.TryParseDateTime(_stringReference, DateTimeZoneHandling, DateFormatString, Culture, out dt))
                            {
                                SetToken(JsonToken.Date, dt, false);
                                return;
                            }
                        }
#if !NET20
                        else
                        {
                            DateTimeOffset dt;
                            if (DateTimeUtils.TryParseDateTimeOffset(_stringReference, DateFormatString, Culture, out dt))
                            {
                                SetToken(JsonToken.Date, dt, false);
                                return;
                            }
                        }
#endif
                    }

                    SetToken(JsonToken.String, _stringReference.ToString(), false);
                    _quoteChar = quote;
                    break;
            }
        }