internal static bool TryParseDateTimeOffsetIso(StringReference text, out DateTimeOffset dt)
{
DateTimeParser dateTimeParser = new DateTimeParser();
if (!dateTimeParser.Parse(text.Chars, text.StartIndex, text.Length))
{
dt = default(DateTimeOffset);
return(false);
}
DateTime d = CreateDateTime(dateTimeParser);
TimeSpan offset;
switch (dateTimeParser.Zone)
{
case ParserTimeZone.Utc:
offset = new TimeSpan(0L);
break;
case ParserTimeZone.LocalWestOfUtc:
offset = new TimeSpan(-dateTimeParser.ZoneHour, -dateTimeParser.ZoneMinute, 0);
break;
case ParserTimeZone.LocalEastOfUtc:
offset = new TimeSpan(dateTimeParser.ZoneHour, dateTimeParser.ZoneMinute, 0);
break;
default:
offset = TimeZoneInfo.Local.GetUtcOffset(d);
break;
}
long ticks = d.Ticks - offset.Ticks;
if (ticks < 0 || ticks > 3155378975999999999)
{
dt = default(DateTimeOffset);
return(false);
}
dt = new DateTimeOffset(d, offset);
return(true);
}
public static bool StartsWith(this StringReference s, string text)
{
if (text.Length > s.Length)
{
return(false);
}
char[] chars = s.Chars;
for (int i = 0; i < text.Length; i++)
{
if (text[i] != chars[i + s.StartIndex])
{
return(false);
}
}
return(true);
}
private static bool TryParseDateTimeOffsetMicrosoft(StringReference text, out DateTimeOffset dt)
{
long ticks;
TimeSpan offset;
DateTimeKind kind;
if (!TryParseMicrosoftDate(text, out ticks, out offset, out kind))
{
dt = default(DateTime);
return false;
}
DateTime utcDateTime = ConvertJavaScriptTicksToDateTime(ticks);
dt = new DateTimeOffset(utcDateTime.Add(offset).Ticks, offset);
return true;
}
internal static bool TryParseDateTimeOffset(StringReference s, string dateFormatString, CultureInfo culture, out DateTimeOffset dt)
{
if (s.Length > 0)
{
int i = s.StartIndex;
if (s[i] == '/')
{
if (s.Length >= 9 && s.StartsWith("/Date(") && s.EndsWith(")/"))
{
if (TryParseDateTimeOffsetMicrosoft(s, out dt))
{
return true;
}
}
}
else if (s.Length >= 19 && s.Length <= 40 && char.IsDigit(s[i]) && s[i + 10] == 'T')
{
if (TryParseDateTimeOffsetIso(s, out dt))
{
return true;
}
}
if (!string.IsNullOrEmpty(dateFormatString))
{
if (TryParseDateTimeOffsetExact(s.ToString(), dateFormatString, culture, out dt))
{
return true;
}
}
}
dt = default(DateTimeOffset);
return false;
}
internal static bool TryParseDateTimeOffsetIso(StringReference text, out DateTimeOffset dt)
{
DateTimeParser dateTimeParser = new DateTimeParser();
if (!dateTimeParser.Parse(text.Chars, text.StartIndex, text.Length))
{
dt = default(DateTimeOffset);
return false;
}
DateTime d = CreateDateTime(dateTimeParser);
TimeSpan offset;
switch (dateTimeParser.Zone)
{
case ParserTimeZone.Utc:
offset = new TimeSpan(0L);
break;
case ParserTimeZone.LocalWestOfUtc:
offset = new TimeSpan(-dateTimeParser.ZoneHour, -dateTimeParser.ZoneMinute, 0);
break;
case ParserTimeZone.LocalEastOfUtc:
offset = new TimeSpan(dateTimeParser.ZoneHour, dateTimeParser.ZoneMinute, 0);
break;
default:
offset = TimeZoneInfo.Local.GetUtcOffset(d);
break;
}
long ticks = d.Ticks - offset.Ticks;
if (ticks < 0 || ticks > 3155378975999999999)
{
dt = default(DateTimeOffset);
return false;
}
dt = new DateTimeOffset(d, offset);
return true;
}
private static bool TryReadOffset(StringReference offsetText, int startIndex, out TimeSpan offset)
{
bool negative = (offsetText[startIndex] == '-');
int hours;
if (ConvertUtils.Int32TryParse(offsetText.Chars, startIndex + 1, 2, out hours) != ParseResult.Success)
{
offset = default(TimeSpan);
return false;
}
int minutes = 0;
if (offsetText.Length - startIndex > 5)
{
if (ConvertUtils.Int32TryParse(offsetText.Chars, startIndex + 3, 2, out minutes) != ParseResult.Success)
{
offset = default(TimeSpan);
return false;
}
}
offset = TimeSpan.FromHours(hours) + TimeSpan.FromMinutes(minutes);
if (negative)
{
offset = offset.Negate();
}
return true;
}
private static bool TryParseMicrosoftDate(StringReference text, out long ticks, out TimeSpan offset, out DateTimeKind kind)
{
kind = DateTimeKind.Utc;
int index = text.IndexOf('+', 7, text.Length - 8);
if (index == -1)
{
index = text.IndexOf('-', 7, text.Length - 8);
}
if (index != -1)
{
kind = DateTimeKind.Local;
if (!TryReadOffset(text, index + text.StartIndex, out offset))
{
ticks = 0;
return false;
}
}
else
{
offset = TimeSpan.Zero;
index = text.Length - 2;
}
return (ConvertUtils.Int64TryParse(text.Chars, 6 + text.StartIndex, index - 6, out ticks) == ParseResult.Success);
}
private static bool TryParseDateTimeMicrosoft(StringReference text, DateTimeZoneHandling dateTimeZoneHandling, out DateTime dt)
{
long ticks;
TimeSpan offset;
DateTimeKind kind;
if (!TryParseMicrosoftDate(text, out ticks, out offset, out kind))
{
dt = default(DateTime);
return false;
}
DateTime utcDateTime = ConvertJavaScriptTicksToDateTime(ticks);
switch (kind)
{
case DateTimeKind.Unspecified:
dt = DateTime.SpecifyKind(utcDateTime.ToLocalTime(), DateTimeKind.Unspecified);
break;
case DateTimeKind.Local:
dt = utcDateTime.ToLocalTime();
break;
default:
dt = utcDateTime;
break;
}
dt = EnsureDateTime(dt, dateTimeZoneHandling);
return true;
}
internal static bool TryParseDateTimeIso(StringReference text, DateTimeZoneHandling dateTimeZoneHandling, out DateTime dt)
{
DateTimeParser dateTimeParser = new DateTimeParser();
if (!dateTimeParser.Parse(text.Chars, text.StartIndex, text.Length))
{
dt = default(DateTime);
return false;
}
DateTime d = CreateDateTime(dateTimeParser);
long ticks;
switch (dateTimeParser.Zone)
{
case ParserTimeZone.Utc:
d = new DateTime(d.Ticks, DateTimeKind.Utc);
break;
case ParserTimeZone.LocalWestOfUtc:
{
TimeSpan offset = new TimeSpan(dateTimeParser.ZoneHour, dateTimeParser.ZoneMinute, 0);
ticks = d.Ticks + offset.Ticks;
if (ticks <= DateTime.MaxValue.Ticks)
{
d = new DateTime(ticks, DateTimeKind.Utc).ToLocalTime();
}
else
{
ticks += d.GetUtcOffset().Ticks;
if (ticks > DateTime.MaxValue.Ticks)
{
ticks = DateTime.MaxValue.Ticks;
}
d = new DateTime(ticks, DateTimeKind.Local);
}
break;
}
case ParserTimeZone.LocalEastOfUtc:
{
TimeSpan offset = new TimeSpan(dateTimeParser.ZoneHour, dateTimeParser.ZoneMinute, 0);
ticks = d.Ticks - offset.Ticks;
if (ticks >= DateTime.MinValue.Ticks)
{
d = new DateTime(ticks, DateTimeKind.Utc).ToLocalTime();
}
else
{
ticks += d.GetUtcOffset().Ticks;
if (ticks < DateTime.MinValue.Ticks)
{
ticks = DateTime.MinValue.Ticks;
}
d = new DateTime(ticks, DateTimeKind.Local);
}
break;
}
}
dt = EnsureDateTime(d, dateTimeZoneHandling);
return true;
}
internal static bool TryParseDateTimeIso(StringReference text, DateTimeZoneHandling dateTimeZoneHandling, out DateTime dt)
{
DateTimeParser dateTimeParser = new DateTimeParser();
if (!dateTimeParser.Parse(text.Chars, text.StartIndex, text.Length))
{
dt = default(DateTime);
return(false);
}
DateTime d = CreateDateTime(dateTimeParser);
long ticks;
switch (dateTimeParser.Zone)
{
case ParserTimeZone.Utc:
d = new DateTime(d.Ticks, DateTimeKind.Utc);
break;
case ParserTimeZone.LocalWestOfUtc:
{
TimeSpan offset = new TimeSpan(dateTimeParser.ZoneHour, dateTimeParser.ZoneMinute, 0);
ticks = d.Ticks + offset.Ticks;
if (ticks <= DateTime.MaxValue.Ticks)
{
d = new DateTime(ticks, DateTimeKind.Utc).ToLocalTime();
}
else
{
ticks += d.GetUtcOffset().Ticks;
if (ticks > DateTime.MaxValue.Ticks)
{
ticks = DateTime.MaxValue.Ticks;
}
d = new DateTime(ticks, DateTimeKind.Local);
}
break;
}
case ParserTimeZone.LocalEastOfUtc:
{
TimeSpan offset = new TimeSpan(dateTimeParser.ZoneHour, dateTimeParser.ZoneMinute, 0);
ticks = d.Ticks - offset.Ticks;
if (ticks >= DateTime.MinValue.Ticks)
{
d = new DateTime(ticks, DateTimeKind.Utc).ToLocalTime();
}
else
{
ticks += d.GetUtcOffset().Ticks;
if (ticks < DateTime.MinValue.Ticks)
{
ticks = DateTime.MinValue.Ticks;
}
d = new DateTime(ticks, DateTimeKind.Local);
}
break;
}
}
dt = EnsureDateTime(d, dateTimeZoneHandling);
return(true);
}
private void ParseNumber(ReadType readType)
{
ShiftBufferIfNeeded();
char firstChar = _chars[_charPos];
int initialPosition = _charPos;
ReadNumberIntoBuffer();
// set state to PostValue now so that if there is an error parsing the number then the reader can continue
SetPostValueState(true);
_stringReference = new StringReference(_chars, initialPosition, _charPos - initialPosition);
object numberValue;
JsonToken numberType;
bool singleDigit = (char.IsDigit(firstChar) && _stringReference.Length == 1);
bool nonBase10 = (firstChar == '0' && _stringReference.Length > 1 && _stringReference.Chars[_stringReference.StartIndex + 1] != '.' && _stringReference.Chars[_stringReference.StartIndex + 1] != 'e' && _stringReference.Chars[_stringReference.StartIndex + 1] != 'E');
if (readType == ReadType.ReadAsInt32)
{
if (singleDigit)
{
// digit char values start at 48
numberValue = firstChar - 48;
}
else if (nonBase10)
{
string number = _stringReference.ToString();
try
{
int integer = number.StartsWith("0x", StringComparison.OrdinalIgnoreCase) ? Convert.ToInt32(number, 16) : Convert.ToInt32(number, 8);
numberValue = integer;
}
catch (Exception ex)
{
throw JsonReaderException.Create(this, "Input string '{0}' is not a valid integer.".FormatWith(CultureInfo.InvariantCulture, number), ex);
}
}
else
{
int value;
ParseResult parseResult = ConvertUtils.Int32TryParse(_stringReference.Chars, _stringReference.StartIndex, _stringReference.Length, out value);
if (parseResult == ParseResult.Success)
{
numberValue = value;
}
else if (parseResult == ParseResult.Overflow)
{
throw JsonReaderException.Create(this, "JSON integer {0} is too large or small for an Int32.".FormatWith(CultureInfo.InvariantCulture, _stringReference.ToString()));
}
else
{
throw JsonReaderException.Create(this, "Input string '{0}' is not a valid integer.".FormatWith(CultureInfo.InvariantCulture, _stringReference.ToString()));
}
}
numberType = JsonToken.Integer;
}
else if (readType == ReadType.ReadAsDecimal)
{
if (singleDigit)
{
// digit char values start at 48
numberValue = (decimal)firstChar - 48;
}
else if (nonBase10)
{
string number = _stringReference.ToString();
try
{
// decimal.Parse doesn't support parsing hexadecimal values
long integer = number.StartsWith("0x", StringComparison.OrdinalIgnoreCase) ? Convert.ToInt64(number, 16) : Convert.ToInt64(number, 8);
numberValue = Convert.ToDecimal(integer);
}
catch (Exception ex)
{
throw JsonReaderException.Create(this, "Input string '{0}' is not a valid decimal.".FormatWith(CultureInfo.InvariantCulture, number), ex);
}
}
else
{
string number = _stringReference.ToString();
decimal value;
if (decimal.TryParse(number, NumberStyles.Number | NumberStyles.AllowExponent, CultureInfo.InvariantCulture, out value))
{
numberValue = value;
}
else
{
throw JsonReaderException.Create(this, "Input string '{0}' is not a valid decimal.".FormatWith(CultureInfo.InvariantCulture, _stringReference.ToString()));
}
}
numberType = JsonToken.Float;
}
else if (readType == ReadType.ReadAsDouble)
{
if (singleDigit)
{
// digit char values start at 48
numberValue = (double)firstChar - 48;
}
else if (nonBase10)
{
string number = _stringReference.ToString();
try
{
// double.Parse doesn't support parsing hexadecimal values
long integer = number.StartsWith("0x", StringComparison.OrdinalIgnoreCase) ? Convert.ToInt64(number, 16) : Convert.ToInt64(number, 8);
numberValue = Convert.ToDouble(integer);
}
catch (Exception ex)
{
throw JsonReaderException.Create(this, "Input string '{0}' is not a valid double.".FormatWith(CultureInfo.InvariantCulture, number), ex);
}
}
else
{
string number = _stringReference.ToString();
double value;
if (double.TryParse(number, NumberStyles.Float, CultureInfo.InvariantCulture, out value))
{
numberValue = value;
}
else
{
throw JsonReaderException.Create(this, "Input string '{0}' is not a valid double.".FormatWith(CultureInfo.InvariantCulture, _stringReference.ToString()));
}
}
numberType = JsonToken.Float;
}
else
{
if (singleDigit)
{
// digit char values start at 48
numberValue = (long)firstChar - 48;
numberType = JsonToken.Integer;
}
else if (nonBase10)
{
string number = _stringReference.ToString();
try
{
numberValue = number.StartsWith("0x", StringComparison.OrdinalIgnoreCase) ? Convert.ToInt64(number, 16) : Convert.ToInt64(number, 8);
}
catch (Exception ex)
{
throw JsonReaderException.Create(this, "Input string '{0}' is not a valid number.".FormatWith(CultureInfo.InvariantCulture, number), ex);
}
numberType = JsonToken.Integer;
}
else
{
long value;
ParseResult parseResult = ConvertUtils.Int64TryParse(_stringReference.Chars, _stringReference.StartIndex, _stringReference.Length, out value);
if (parseResult == ParseResult.Success)
{
numberValue = value;
numberType = JsonToken.Integer;
}
else if (parseResult == ParseResult.Overflow)
{
#if !(NET20 || NET35 || PORTABLE40 || PORTABLE)
string number = _stringReference.ToString();
if (number.Length > MaximumJavascriptIntegerCharacterLength)
{
throw JsonReaderException.Create(this, "JSON integer {0} is too large to parse.".FormatWith(CultureInfo.InvariantCulture, _stringReference.ToString()));
}
numberValue = BigIntegerParse(number, CultureInfo.InvariantCulture);
numberType = JsonToken.Integer;
#else
throw JsonReaderException.Create(this, "JSON integer {0} is too large or small for an Int64.".FormatWith(CultureInfo.InvariantCulture, _stringReference.ToString()));
#endif
}
else
{
string number = _stringReference.ToString();
if (_floatParseHandling == FloatParseHandling.Decimal)
{
decimal d;
if (decimal.TryParse(number, NumberStyles.Number | NumberStyles.AllowExponent, CultureInfo.InvariantCulture, out d))
{
numberValue = d;
}
else
{
throw JsonReaderException.Create(this, "Input string '{0}' is not a valid decimal.".FormatWith(CultureInfo.InvariantCulture, number));
}
}
else
{
double d;
if (double.TryParse(number, NumberStyles.Float | NumberStyles.AllowThousands, CultureInfo.InvariantCulture, out d))
{
numberValue = d;
}
else
{
throw JsonReaderException.Create(this, "Input string '{0}' is not a valid number.".FormatWith(CultureInfo.InvariantCulture, number));
}
}
numberType = JsonToken.Float;
}
}
}
ClearRecentString();
// index has already been updated
SetToken(numberType, numberValue, false);
}
private void ParseConstructor()
{
if (MatchValueWithTrailingSeparator("new"))
{
EatWhitespace(false);
int initialPosition = _charPos;
int endPosition;
while (true)
{
char currentChar = _chars[_charPos];
if (currentChar == '\0')
{
if (_charsUsed == _charPos)
{
if (ReadData(true) == 0)
{
throw JsonReaderException.Create(this, "Unexpected end while parsing constructor.");
}
}
else
{
endPosition = _charPos;
_charPos++;
break;
}
}
else if (char.IsLetterOrDigit(currentChar))
{
_charPos++;
}
else if (currentChar == StringUtils.CarriageReturn)
{
endPosition = _charPos;
ProcessCarriageReturn(true);
break;
}
else if (currentChar == StringUtils.LineFeed)
{
endPosition = _charPos;
ProcessLineFeed();
break;
}
else if (char.IsWhiteSpace(currentChar))
{
endPosition = _charPos;
_charPos++;
break;
}
else if (currentChar == '(')
{
endPosition = _charPos;
break;
}
else
{
throw JsonReaderException.Create(this, "Unexpected character while parsing constructor: {0}.".FormatWith(CultureInfo.InvariantCulture, currentChar));
}
}
_stringReference = new StringReference(_chars, initialPosition, endPosition - initialPosition);
string constructorName = _stringReference.ToString();
EatWhitespace(false);
if (_chars[_charPos] != '(')
{
throw JsonReaderException.Create(this, "Unexpected character while parsing constructor: {0}.".FormatWith(CultureInfo.InvariantCulture, _chars[_charPos]));
}
_charPos++;
ClearRecentString();
SetToken(JsonToken.StartConstructor, constructorName);
}
else
{
throw JsonReaderException.Create(this, "Unexpected content while parsing JSON.");
}
}
private void ClearRecentString()
{
_stringBuffer.Position = 0;
_stringReference = new StringReference();
}
private void ReadStringIntoBuffer(char quote)
{
int charPos = _charPos;
int initialPosition = _charPos;
int lastWritePosition = _charPos;
_stringBuffer.Position = 0;
while (true)
{
switch (_chars[charPos++])
{
case '\0':
if (_charsUsed == charPos - 1)
{
charPos--;
if (ReadData(true) == 0)
{
_charPos = charPos;
throw JsonReaderException.Create(this, "Unterminated string. Expected delimiter: {0}.".FormatWith(CultureInfo.InvariantCulture, quote));
}
}
break;
case '\\':
_charPos = charPos;
if (!EnsureChars(0, true))
{
throw JsonReaderException.Create(this, "Unterminated string. Expected delimiter: {0}.".FormatWith(CultureInfo.InvariantCulture, quote));
}
// start of escape sequence
int escapeStartPos = charPos - 1;
char currentChar = _chars[charPos];
charPos++;
char writeChar;
switch (currentChar)
{
case 'b':
writeChar = '\b';
break;
case 't':
writeChar = '\t';
break;
case 'n':
writeChar = '\n';
break;
case 'f':
writeChar = '\f';
break;
case 'r':
writeChar = '\r';
break;
case '\\':
writeChar = '\\';
break;
case '"':
case '\'':
case '/':
writeChar = currentChar;
break;
case 'u':
_charPos = charPos;
writeChar = ParseUnicode();
if (StringUtils.IsLowSurrogate(writeChar))
{
// low surrogate with no preceding high surrogate; this char is replaced
writeChar = UnicodeReplacementChar;
}
else if (StringUtils.IsHighSurrogate(writeChar))
{
bool anotherHighSurrogate;
// loop for handling situations where there are multiple consecutive high surrogates
do
{
anotherHighSurrogate = false;
// potential start of a surrogate pair
if (EnsureChars(2, true) && _chars[_charPos] == '\\' && _chars[_charPos + 1] == 'u')
{
char highSurrogate = writeChar;
_charPos += 2;
writeChar = ParseUnicode();
if (StringUtils.IsLowSurrogate(writeChar))
{
// a valid surrogate pair!
}
else if (StringUtils.IsHighSurrogate(writeChar))
{
// another high surrogate; replace current and start check over
highSurrogate = UnicodeReplacementChar;
anotherHighSurrogate = true;
}
else
{
// high surrogate not followed by low surrogate; original char is replaced
highSurrogate = UnicodeReplacementChar;
}
EnsureBufferNotEmpty();
WriteCharToBuffer(highSurrogate, lastWritePosition, escapeStartPos);
lastWritePosition = _charPos;
}
else
{
// there are not enough remaining chars for the low surrogate or is not follow by unicode sequence
// replace high surrogate and continue on as usual
writeChar = UnicodeReplacementChar;
}
} while (anotherHighSurrogate);
}
charPos = _charPos;
break;
default:
_charPos = charPos;
throw JsonReaderException.Create(this, "Bad JSON escape sequence: {0}.".FormatWith(CultureInfo.InvariantCulture, @"\" + currentChar));
}
EnsureBufferNotEmpty();
WriteCharToBuffer(writeChar, lastWritePosition, escapeStartPos);
lastWritePosition = charPos;
break;
case StringUtils.CarriageReturn:
_charPos = charPos - 1;
ProcessCarriageReturn(true);
charPos = _charPos;
break;
case StringUtils.LineFeed:
_charPos = charPos - 1;
ProcessLineFeed();
charPos = _charPos;
break;
case '"':
case '\'':
if (_chars[charPos - 1] == quote)
{
charPos--;
if (initialPosition == lastWritePosition)
{
_stringReference = new StringReference(_chars, initialPosition, charPos - initialPosition);
}
else
{
EnsureBufferNotEmpty();
if (charPos > lastWritePosition)
{
_stringBuffer.Append(_arrayPool, _chars, lastWritePosition, charPos - lastWritePosition);
}
_stringReference = new StringReference(_stringBuffer.InternalBuffer, 0, _stringBuffer.Position);
}
charPos++;
_charPos = charPos;
return;
}
break;
}
}
}
private void ParseUnquotedProperty()
{
int initialPosition = _charPos;
// parse unquoted property name until whitespace or colon
while (true)
{
switch (_chars[_charPos])
{
case '\0':
if (_charsUsed == _charPos)
{
if (ReadData(true) == 0)
{
throw JsonReaderException.Create(this, "Unexpected end while parsing unquoted property name.");
}
break;
}
_stringReference = new StringReference(_chars, initialPosition, _charPos - initialPosition);
return;
default:
char currentChar = _chars[_charPos];
if (ValidIdentifierChar(currentChar))
{
_charPos++;
break;
}
else if (char.IsWhiteSpace(currentChar) || currentChar == ':')
{
_stringReference = new StringReference(_chars, initialPosition, _charPos - initialPosition);
return;
}
throw JsonReaderException.Create(this, "Invalid JavaScript property identifier character: {0}.".FormatWith(CultureInfo.InvariantCulture, currentChar));
}
}
}
