private static bool Lex(DateTimeParse.DS dps, ref __DTString str, ref DateTimeToken dtok, ref DateTimeRawInfo raw, ref DateTimeResult result, ref DateTimeFormatInfo dtfi)
{
dtok.dtt = DateTimeParse.DTT.Unk;
TokenType tokenType;
int num;
str.GetRegularToken(out tokenType, out num, dtfi);
switch (tokenType)
{
case TokenType.NumberToken:
case TokenType.YearNumberToken:
{
if (raw.numCount == 3 || num == -1)
{
result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
return false;
}
if (dps == DateTimeParse.DS.T_NNt && str.Index < str.len - 1)
{
char c = str.Value[str.Index];
if (c == '.')
{
DateTimeParse.ParseFraction(ref str, out raw.fraction);
}
}
if ((dps == DateTimeParse.DS.T_NNt || dps == DateTimeParse.DS.T_Nt) && str.Index < str.len - 1 && !DateTimeParse.HandleTimeZone(ref str, ref result))
{
return false;
}
dtok.num = num;
if (tokenType != TokenType.YearNumberToken)
{
int index;
char current;
TokenType separatorToken;
TokenType tokenType2 = separatorToken = str.GetSeparatorToken(dtfi, out index, out current);
if (separatorToken > TokenType.SEP_YearSuff)
{
if (separatorToken <= TokenType.SEP_HourSuff)
{
if (separatorToken == TokenType.SEP_MonthSuff || separatorToken == TokenType.SEP_DaySuff)
{
dtok.dtt = DateTimeParse.DTT.NumDatesuff;
dtok.suffix = tokenType2;
break;
}
if (separatorToken != TokenType.SEP_HourSuff)
{
goto IL_52A;
}
}
else
{
if (separatorToken <= TokenType.SEP_SecondSuff)
{
if (separatorToken != TokenType.SEP_MinuteSuff && separatorToken != TokenType.SEP_SecondSuff)
{
goto IL_52A;
}
}
else
{
if (separatorToken == TokenType.SEP_LocalTimeMark)
{
dtok.dtt = DateTimeParse.DTT.NumLocalTimeMark;
raw.AddNumber(dtok.num);
break;
}
if (separatorToken != TokenType.SEP_DateOrOffset)
{
goto IL_52A;
}
if (DateTimeParse.dateParsingStates[(int)dps][4] == DateTimeParse.DS.ERROR && DateTimeParse.dateParsingStates[(int)dps][3] > DateTimeParse.DS.ERROR)
{
str.Index = index;
str.m_current = current;
dtok.dtt = DateTimeParse.DTT.NumSpace;
}
else
{
dtok.dtt = DateTimeParse.DTT.NumDatesep;
}
raw.AddNumber(dtok.num);
break;
}
}
dtok.dtt = DateTimeParse.DTT.NumTimesuff;
dtok.suffix = tokenType2;
break;
}
if (separatorToken <= TokenType.SEP_Am)
{
if (separatorToken == TokenType.SEP_End)
{
dtok.dtt = DateTimeParse.DTT.NumEnd;
raw.AddNumber(dtok.num);
break;
}
if (separatorToken == TokenType.SEP_Space)
{
dtok.dtt = DateTimeParse.DTT.NumSpace;
raw.AddNumber(dtok.num);
break;
}
if (separatorToken != TokenType.SEP_Am)
{
goto IL_52A;
}
}
else
{
if (separatorToken <= TokenType.SEP_Date)
{
if (separatorToken != TokenType.SEP_Pm)
{
if (separatorToken != TokenType.SEP_Date)
{
goto IL_52A;
}
dtok.dtt = DateTimeParse.DTT.NumDatesep;
raw.AddNumber(dtok.num);
break;
}
}
else
{
if (separatorToken == TokenType.SEP_Time)
{
dtok.dtt = DateTimeParse.DTT.NumTimesep;
raw.AddNumber(dtok.num);
break;
}
if (separatorToken != TokenType.SEP_YearSuff)
{
goto IL_52A;
}
dtok.num = dtfi.Calendar.ToFourDigitYear(num);
dtok.dtt = DateTimeParse.DTT.NumDatesuff;
dtok.suffix = tokenType2;
break;
}
}
if (raw.timeMark != DateTimeParse.TM.NotSet)
{
result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
break;
}
raw.timeMark = ((tokenType2 == TokenType.SEP_Am) ? DateTimeParse.TM.AM : DateTimeParse.TM.PM);
dtok.dtt = DateTimeParse.DTT.NumAmpm;
raw.AddNumber(dtok.num);
if ((dps == DateTimeParse.DS.T_NNt || dps == DateTimeParse.DS.T_Nt) && !DateTimeParse.HandleTimeZone(ref str, ref result))
{
return false;
}
break;
IL_52A:
result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
return false;
}
if (raw.year == -1)
{
raw.year = num;
int index;
char current;
TokenType separatorToken2;
TokenType tokenType2 = separatorToken2 = str.GetSeparatorToken(dtfi, out index, out current);
if (separatorToken2 > TokenType.SEP_YearSuff)
{
if (separatorToken2 <= TokenType.SEP_HourSuff)
{
if (separatorToken2 == TokenType.SEP_MonthSuff || separatorToken2 == TokenType.SEP_DaySuff)
{
goto IL_26A;
}
if (separatorToken2 != TokenType.SEP_HourSuff)
{
goto IL_28E;
}
}
else
{
if (separatorToken2 != TokenType.SEP_MinuteSuff && separatorToken2 != TokenType.SEP_SecondSuff)
{
if (separatorToken2 != TokenType.SEP_DateOrOffset)
{
goto IL_28E;
}
if (DateTimeParse.dateParsingStates[(int)dps][13] == DateTimeParse.DS.ERROR && DateTimeParse.dateParsingStates[(int)dps][12] > DateTimeParse.DS.ERROR)
{
str.Index = index;
str.m_current = current;
dtok.dtt = DateTimeParse.DTT.YearSpace;
return true;
}
dtok.dtt = DateTimeParse.DTT.YearDateSep;
return true;
}
}
dtok.dtt = DateTimeParse.DTT.NumTimesuff;
dtok.suffix = tokenType2;
return true;
}
if (separatorToken2 <= TokenType.SEP_Am)
{
if (separatorToken2 == TokenType.SEP_End)
{
dtok.dtt = DateTimeParse.DTT.YearEnd;
return true;
}
if (separatorToken2 == TokenType.SEP_Space)
{
dtok.dtt = DateTimeParse.DTT.YearSpace;
return true;
}
if (separatorToken2 != TokenType.SEP_Am)
{
goto IL_28E;
}
}
else
{
if (separatorToken2 != TokenType.SEP_Pm)
{
if (separatorToken2 == TokenType.SEP_Date)
{
dtok.dtt = DateTimeParse.DTT.YearDateSep;
return true;
}
if (separatorToken2 != TokenType.SEP_YearSuff)
{
goto IL_28E;
}
goto IL_26A;
}
}
if (raw.timeMark == DateTimeParse.TM.NotSet)
{
raw.timeMark = ((tokenType2 == TokenType.SEP_Am) ? DateTimeParse.TM.AM : DateTimeParse.TM.PM);
dtok.dtt = DateTimeParse.DTT.YearSpace;
return true;
}
result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
return true;
IL_26A:
dtok.dtt = DateTimeParse.DTT.NumDatesuff;
dtok.suffix = tokenType2;
return true;
IL_28E:
result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
return false;
}
result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
return false;
}
case TokenType.Am:
case TokenType.Pm:
{
if (raw.timeMark != DateTimeParse.TM.NotSet)
{
result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
return false;
}
raw.timeMark = (DateTimeParse.TM)num;
break;
}
case TokenType.MonthToken:
{
if (raw.month != -1)
{
result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
return false;
}
int index;
char current;
TokenType separatorToken3 = str.GetSeparatorToken(dtfi, out index, out current);
if (separatorToken3 <= TokenType.SEP_Space)
{
if (separatorToken3 == TokenType.SEP_End)
{
dtok.dtt = DateTimeParse.DTT.MonthEnd;
goto IL_786;
}
if (separatorToken3 == TokenType.SEP_Space)
{
dtok.dtt = DateTimeParse.DTT.MonthSpace;
goto IL_786;
}
}
else
{
if (separatorToken3 == TokenType.SEP_Date)
{
dtok.dtt = DateTimeParse.DTT.MonthDatesep;
goto IL_786;
}
if (separatorToken3 == TokenType.SEP_DateOrOffset)
{
if (DateTimeParse.dateParsingStates[(int)dps][8] == DateTimeParse.DS.ERROR && DateTimeParse.dateParsingStates[(int)dps][7] > DateTimeParse.DS.ERROR)
{
str.Index = index;
str.m_current = current;
dtok.dtt = DateTimeParse.DTT.MonthSpace;
goto IL_786;
}
dtok.dtt = DateTimeParse.DTT.MonthDatesep;
goto IL_786;
}
}
result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
return false;
IL_786:
raw.month = num;
break;
}
case TokenType.EndOfString:
{
dtok.dtt = DateTimeParse.DTT.End;
break;
}
case TokenType.DayOfWeekToken:
{
if (raw.dayOfWeek != -1)
{
result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
return false;
}
raw.dayOfWeek = num;
dtok.dtt = DateTimeParse.DTT.DayOfWeek;
break;
}
case TokenType.TimeZoneToken:
{
if ((result.flags & ParseFlags.TimeZoneUsed) != (ParseFlags)0)
{
result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
return false;
}
dtok.dtt = DateTimeParse.DTT.TimeZone;
result.flags |= ParseFlags.TimeZoneUsed;
result.timeZoneOffset = new TimeSpan(0L);
result.flags |= ParseFlags.TimeZoneUtc;
break;
}
case TokenType.EraToken:
{
if (result.era == -1)
{
result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
return false;
}
result.era = num;
dtok.dtt = DateTimeParse.DTT.Era;
break;
}
case TokenType.UnknownToken:
{
if (char.IsLetter(str.m_current))
{
result.SetFailure(ParseFailureKind.FormatWithParameter, "Format_UnknowDateTimeWord", str.Index);
return false;
}
if (Environment.GetCompatibilityFlag(CompatibilityFlag.DateTimeParseIgnorePunctuation) && (result.flags & ParseFlags.CaptureOffset) == (ParseFlags)0)
{
str.GetNext();
return true;
}
if ((str.m_current == '-' || str.m_current == '+') && (result.flags & ParseFlags.TimeZoneUsed) == (ParseFlags)0)
{
int index2 = str.Index;
if (DateTimeParse.ParseTimeZone(ref str, ref result.timeZoneOffset))
{
result.flags |= ParseFlags.TimeZoneUsed;
return true;
}
str.Index = index2;
}
if (DateTimeParse.VerifyValidPunctuation(ref str))
{
return true;
}
result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
return false;
}
case TokenType.HebrewNumber:
{
int index;
char current;
if (num < 100)
{
dtok.num = num;
raw.AddNumber(dtok.num);
TokenType separatorToken4 = str.GetSeparatorToken(dtfi, out index, out current);
if (separatorToken4 <= TokenType.SEP_Space)
{
if (separatorToken4 == TokenType.SEP_End)
{
dtok.dtt = DateTimeParse.DTT.NumEnd;
break;
}
if (separatorToken4 != TokenType.SEP_Space)
{
goto IL_695;
}
}
else
{
if (separatorToken4 != TokenType.SEP_Date)
{
if (separatorToken4 != TokenType.SEP_DateOrOffset)
{
goto IL_695;
}
if (DateTimeParse.dateParsingStates[(int)dps][4] == DateTimeParse.DS.ERROR && DateTimeParse.dateParsingStates[(int)dps][3] > DateTimeParse.DS.ERROR)
{
str.Index = index;
str.m_current = current;
dtok.dtt = DateTimeParse.DTT.NumSpace;
break;
}
dtok.dtt = DateTimeParse.DTT.NumDatesep;
break;
}
}
dtok.dtt = DateTimeParse.DTT.NumDatesep;
break;
IL_695:
result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
return false;
}
if (raw.year != -1)
{
result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
return false;
}
raw.year = num;
TokenType separatorToken5 = str.GetSeparatorToken(dtfi, out index, out current);
if (separatorToken5 != TokenType.SEP_End)
{
if (separatorToken5 != TokenType.SEP_Space)
{
if (separatorToken5 == TokenType.SEP_DateOrOffset)
{
if (DateTimeParse.dateParsingStates[(int)dps][12] > DateTimeParse.DS.ERROR)
{
str.Index = index;
str.m_current = current;
dtok.dtt = DateTimeParse.DTT.YearSpace;
break;
}
}
result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
return false;
}
dtok.dtt = DateTimeParse.DTT.YearSpace;
}
else
{
dtok.dtt = DateTimeParse.DTT.YearEnd;
}
break;
}
case TokenType.JapaneseEraToken:
{
result.calendar = JapaneseCalendar.GetDefaultInstance();
dtfi = DateTimeFormatInfo.GetJapaneseCalendarDTFI();
if (result.era == -1)
{
result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
return false;
}
result.era = num;
dtok.dtt = DateTimeParse.DTT.Era;
break;
}
case TokenType.TEraToken:
{
result.calendar = TaiwanCalendar.GetDefaultInstance();
dtfi = DateTimeFormatInfo.GetTaiwanCalendarDTFI();
if (result.era == -1)
{
result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
return false;
}
result.era = num;
dtok.dtt = DateTimeParse.DTT.Era;
break;
}
}
return true;
}
[System.Security.SecuritySafeCritical] // auto-generated
private static Boolean Lex(DS dps, ref __DTString str, ref DateTimeToken dtok, ref DateTimeRawInfo raw, ref DateTimeResult result, ref DateTimeFormatInfo dtfi, DateTimeStyles styles)
{
TokenType tokenType;
int tokenValue;
int indexBeforeSeparator;
char charBeforeSeparator;
TokenType sep;
dtok.dtt = DTT.Unk; // Assume the token is unkown.
str.GetRegularToken(out tokenType, out tokenValue, dtfi);
#if _LOGGING
// Builds with _LOGGING defined (x86dbg, amd64chk, etc) support tracing
// Set the following internal-only/unsupported environment variables to enable DateTime tracing to the console:
//
// COMPlus_LogEnable=1
// COMPlus_LogToConsole=1
// COMPlus_LogLevel=9
// COMPlus_ManagedLogFacility=0x00001000
if (_tracingEnabled) {
BCLDebug.Trace("DATETIME", "[DATETIME] Lex({0})\tpos:{1}({2}), {3}, DS.{4}", Hex(str.Value),
str.Index, Hex(str.m_current), tokenType, dps);
}
#endif // _LOGGING
// Look at the regular token.
switch (tokenType) {
case TokenType.NumberToken:
case TokenType.YearNumberToken:
if (raw.numCount == 3 || tokenValue == -1) {
result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
LexTraceExit("0010", dps);
return false;
}
//
// This is a digit.
//
// If the previous parsing state is DS.T_NNt (like 12:01), and we got another number,
// so we will have a terminal state DS.TX_NNN (like 12:01:02).
// If the previous parsing state is DS.T_Nt (like 12:), and we got another number,
// so we will have a terminal state DS.TX_NN (like 12:01).
//
// Look ahead to see if the following character is a decimal point or timezone offset.
// This enables us to parse time in the forms of:
// "11:22:33.1234" or "11:22:33-08".
if (dps == DS.T_NNt) {
if ((str.Index < str.len - 1)) {
char nextCh = str.Value[str.Index];
if (nextCh == '.') {
// While ParseFraction can fail, it just means that there were no digits after
// the dot. In this case ParseFraction just removes the dot. This is actually
// valid for cultures like Albanian, that join the time marker to the time with
// with a dot: e.g. "9:03.MD"
ParseFraction(ref str, out raw.fraction);
}
}
}
if (dps == DS.T_NNt || dps == DS.T_Nt) {
if ((str.Index < str.len - 1)) {
if (false == HandleTimeZone(ref str, ref result))
{
LexTraceExit("0020 (value like \"12:01\" or \"12:\" followed by a non-TZ number", dps);
return false;
}
}
}
dtok.num = tokenValue;
if (tokenType == TokenType.YearNumberToken)
{
if (raw.year == -1)
{
raw.year = tokenValue;
//
// If we have number which has 3 or more digits (like "001" or "0001"),
// we assume this number is a year. Save the currnet raw.numCount in
// raw.year.
//
switch (sep = str.GetSeparatorToken(dtfi, out indexBeforeSeparator, out charBeforeSeparator)) {
case TokenType.SEP_End:
dtok.dtt = DTT.YearEnd;
break;
case TokenType.SEP_Am:
case TokenType.SEP_Pm:
if (raw.timeMark == TM.NotSet) {
raw.timeMark = (sep == TokenType.SEP_Am ? TM.AM : TM.PM);
dtok.dtt = DTT.YearSpace;
} else {
result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
LexTraceExit("0030 (TM.AM/TM.PM Happened more than 1x)", dps);
}
break;
case TokenType.SEP_Space:
dtok.dtt = DTT.YearSpace;
break;
case TokenType.SEP_Date:
dtok.dtt = DTT.YearDateSep;
break;
case TokenType.SEP_Time:
if (!raw.hasSameDateAndTimeSeparators)
{
result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
LexTraceExit("0040 (Invalid separator after number)", dps);
return false;
}
// we have the date and time separators are same and getting a year number, then change the token to YearDateSep as
// we are sure we are not parsing time.
dtok.dtt = DTT.YearDateSep;
break;
case TokenType.SEP_DateOrOffset:
// The separator is either a date separator or the start of a time zone offset. If the token will complete the date then
// process just the number and roll back the index so that the outer loop can attempt to parse the time zone offset.
if ((dateParsingStates[(int)dps][(int) DTT.YearDateSep] == DS.ERROR)
&& (dateParsingStates[(int)dps][(int) DTT.YearSpace] > DS.ERROR)) {
str.Index = indexBeforeSeparator;
str.m_current = charBeforeSeparator;
dtok.dtt = DTT.YearSpace;
}
else {
dtok.dtt = DTT.YearDateSep;
}
break;
case TokenType.SEP_YearSuff:
case TokenType.SEP_MonthSuff:
case TokenType.SEP_DaySuff:
dtok.dtt = DTT.NumDatesuff;
dtok.suffix = sep;
break;
case TokenType.SEP_HourSuff:
case TokenType.SEP_MinuteSuff:
case TokenType.SEP_SecondSuff:
dtok.dtt = DTT.NumTimesuff;
dtok.suffix = sep;
break;
default:
// Invalid separator after number number.
result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
LexTraceExit("0040 (Invalid separator after number)", dps);
return false;
}
//
// Found the token already. Return now.
//
LexTraceExit("0050 (success)", dps);
return true;
}
result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
LexTraceExit("0060", dps);
return false;
}
switch (sep = str.GetSeparatorToken(dtfi, out indexBeforeSeparator, out charBeforeSeparator))
{
//
// Note here we check if the numCount is less than three.
// When we have more than three numbers, it will be caught as error in the state machine.
//
case TokenType.SEP_End:
dtok.dtt = DTT.NumEnd;
raw.AddNumber(dtok.num);
break;
case TokenType.SEP_Am:
case TokenType.SEP_Pm:
if (raw.timeMark == TM.NotSet) {
raw.timeMark = (sep == TokenType.SEP_Am ? TM.AM : TM.PM);
dtok.dtt = DTT.NumAmpm;
// Fix AM/PM parsing case, e.g. "1/10 5 AM"
if (dps == DS.D_NN
#if !FEATURE_CORECLR
&& enableAmPmParseAdjustment
#endif
)
{
if (!ProcessTerminaltState(DS.DX_NN, ref result, ref styles, ref raw, dtfi))
{
return false;
}
}
raw.AddNumber(dtok.num);
} else {
result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
break;
}
if (dps == DS.T_NNt || dps == DS.T_Nt) {
if (false == HandleTimeZone(ref str, ref result))
{
LexTraceExit("0070 (HandleTimeZone returned false)", dps);
return false;
}
}
break;
case TokenType.SEP_Space:
dtok.dtt = DTT.NumSpace;
raw.AddNumber(dtok.num);
break;
case TokenType.SEP_Date:
dtok.dtt = DTT.NumDatesep;
raw.AddNumber(dtok.num);
break;
case TokenType.SEP_DateOrOffset:
// The separator is either a date separator or the start of a time zone offset. If the token will complete the date then
// process just the number and roll back the index so that the outer loop can attempt to parse the time zone offset.
if ((dateParsingStates[(int)dps][(int) DTT.NumDatesep] == DS.ERROR)
&& (dateParsingStates[(int)dps][(int) DTT.NumSpace] > DS.ERROR)) {
str.Index = indexBeforeSeparator;
str.m_current = charBeforeSeparator;
dtok.dtt = DTT.NumSpace;
}
else {
dtok.dtt = DTT.NumDatesep;
}
raw.AddNumber(dtok.num);
break;
case TokenType.SEP_Time:
if (raw.hasSameDateAndTimeSeparators &&
(dps == DS.D_Y || dps == DS.D_YN || dps == DS.D_YNd || dps == DS.D_YM || dps == DS.D_YMd))
{
// we are parsing a date and we have the time separator same as date separator, so we mark the token as date separator
dtok.dtt = DTT.NumDatesep;
raw.AddNumber(dtok.num);
break;
}
dtok.dtt = DTT.NumTimesep;
raw.AddNumber(dtok.num);
break;
case TokenType.SEP_YearSuff:
try {
dtok.num = dtfi.Calendar.ToFourDigitYear(tokenValue);
}
catch (ArgumentOutOfRangeException e) {
result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", e);
LexTraceExit("0075 (Calendar.ToFourDigitYear failed)", dps);
return false;
}
dtok.dtt = DTT.NumDatesuff;
dtok.suffix = sep;
break;
case TokenType.SEP_MonthSuff:
case TokenType.SEP_DaySuff:
dtok.dtt = DTT.NumDatesuff;
dtok.suffix = sep;
break;
case TokenType.SEP_HourSuff:
case TokenType.SEP_MinuteSuff:
case TokenType.SEP_SecondSuff:
dtok.dtt = DTT.NumTimesuff;
dtok.suffix = sep;
break;
case TokenType.SEP_LocalTimeMark:
dtok.dtt = DTT.NumLocalTimeMark;
raw.AddNumber(dtok.num);
break;
default:
// Invalid separator after number number.
result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
LexTraceExit("0080", dps);
return false;
}
break;
case TokenType.HebrewNumber:
if (tokenValue >= 100) {
// This is a year number
if (raw.year == -1) {
raw.year = tokenValue;
//
// If we have number which has 3 or more digits (like "001" or "0001"),
// we assume this number is a year. Save the currnet raw.numCount in
// raw.year.
//
switch (sep = str.GetSeparatorToken(dtfi, out indexBeforeSeparator, out charBeforeSeparator)) {
case TokenType.SEP_End:
dtok.dtt = DTT.YearEnd;
break;
case TokenType.SEP_Space:
dtok.dtt = DTT.YearSpace;
break;
case TokenType.SEP_DateOrOffset:
// The separator is either a date separator or the start of a time zone offset. If the token will complete the date then
// process just the number and roll back the index so that the outer loop can attempt to parse the time zone offset.
if (dateParsingStates[(int)dps][(int) DTT.YearSpace] > DS.ERROR) {
str.Index = indexBeforeSeparator;
str.m_current = charBeforeSeparator;
dtok.dtt = DTT.YearSpace;
break;
}
goto default;
default:
// Invalid separator after number number.
result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
LexTraceExit("0090", dps);
return false;
}
} else {
// Invalid separator after number number.
result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
LexTraceExit("0100", dps);
return false;
}
} else {
// This is a day number
dtok.num = tokenValue;
raw.AddNumber(dtok.num);
switch (sep = str.GetSeparatorToken(dtfi, out indexBeforeSeparator, out charBeforeSeparator)) {
//
// Note here we check if the numCount is less than three.
// When we have more than three numbers, it will be caught as error in the state machine.
//
case TokenType.SEP_End:
dtok.dtt = DTT.NumEnd;
break;
case TokenType.SEP_Space:
case TokenType.SEP_Date:
dtok.dtt = DTT.NumDatesep;
break;
case TokenType.SEP_DateOrOffset:
// The separator is either a date separator or the start of a time zone offset. If the token will complete the date then
// process just the number and roll back the index so that the outer loop can attempt to parse the time zone offset.
if ((dateParsingStates[(int)dps][(int) DTT.NumDatesep] == DS.ERROR)
&& (dateParsingStates[(int)dps][(int) DTT.NumSpace] > DS.ERROR)) {
str.Index = indexBeforeSeparator;
str.m_current = charBeforeSeparator;
dtok.dtt = DTT.NumSpace;
}
else {
dtok.dtt = DTT.NumDatesep;
}
break;
default:
// Invalid separator after number number.
result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
LexTraceExit("0110", dps);
return false;
}
}
break;
case TokenType.DayOfWeekToken:
if (raw.dayOfWeek == -1)
{
//
// This is a day of week name.
//
raw.dayOfWeek = tokenValue;
dtok.dtt = DTT.DayOfWeek;
} else {
result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
LexTraceExit("0120 (DayOfWeek seen more than 1x)", dps);
return false;
}
break;
case TokenType.MonthToken:
if (raw.month == -1)
{
//
// This is a month name
//
switch(sep=str.GetSeparatorToken(dtfi, out indexBeforeSeparator, out charBeforeSeparator))
{
case TokenType.SEP_End:
dtok.dtt = DTT.MonthEnd;
break;
case TokenType.SEP_Space:
dtok.dtt = DTT.MonthSpace;
break;
case TokenType.SEP_Date:
dtok.dtt = DTT.MonthDatesep;
break;
case TokenType.SEP_Time:
if (!raw.hasSameDateAndTimeSeparators)
{
result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
LexTraceExit("0130 (Invalid separator after month name)", dps);
return false;
}
// we have the date and time separators are same and getting a Month name, then change the token to MonthDatesep as
// we are sure we are not parsing time.
dtok.dtt = DTT.MonthDatesep;
break;
case TokenType.SEP_DateOrOffset:
// The separator is either a date separator or the start of a time zone offset. If the token will complete the date then
// process just the number and roll back the index so that the outer loop can attempt to parse the time zone offset.
if ((dateParsingStates[(int)dps][(int) DTT.MonthDatesep] == DS.ERROR)
&& (dateParsingStates[(int)dps][(int) DTT.MonthSpace] > DS.ERROR)) {
str.Index = indexBeforeSeparator;
str.m_current = charBeforeSeparator;
dtok.dtt = DTT.MonthSpace;
}
else {
dtok.dtt = DTT.MonthDatesep;
}
break;
default:
//Invalid separator after month name
result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
LexTraceExit("0130 (Invalid separator after month name)", dps);
return false;
}
raw.month = tokenValue;
} else {
result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
LexTraceExit("0140 (MonthToken seen more than 1x)", dps);
return false;
}
break;
case TokenType.EraToken:
if (result.era != -1) {
result.era = tokenValue;
dtok.dtt = DTT.Era;
} else {
result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
LexTraceExit("0150 (EraToken seen when result.era already set)", dps);
return false;
}
break;
case TokenType.JapaneseEraToken:
// Special case for Japanese. We allow Japanese era name to be used even if the calendar is not Japanese Calendar.
result.calendar = JapaneseCalendar.GetDefaultInstance();
dtfi = DateTimeFormatInfo.GetJapaneseCalendarDTFI();
if (result.era != -1) {
result.era = tokenValue;
dtok.dtt = DTT.Era;
} else {
result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
LexTraceExit("0160 (JapaneseEraToken seen when result.era already set)", dps);
return false;
}
break;
case TokenType.TEraToken:
result.calendar = TaiwanCalendar.GetDefaultInstance();
dtfi = DateTimeFormatInfo.GetTaiwanCalendarDTFI();
if (result.era != -1) {
result.era = tokenValue;
dtok.dtt = DTT.Era;
} else {
result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
LexTraceExit("0170 (TEraToken seen when result.era already set)", dps);
return false;
}
break;
case TokenType.TimeZoneToken:
//
// This is a timezone designator
//
// NOTENOTE : for now, we only support "GMT" and "Z" (for Zulu time).
//
if ((result.flags & ParseFlags.TimeZoneUsed) != 0) {
// Should not have two timezone offsets.
result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
LexTraceExit("0180 (seen GMT or Z more than 1x)", dps);
return false;
}
dtok.dtt = DTT.TimeZone;
result.flags |= ParseFlags.TimeZoneUsed;
result.timeZoneOffset = new TimeSpan(0);
result.flags |= ParseFlags.TimeZoneUtc;
break;
case TokenType.EndOfString:
dtok.dtt = DTT.End;
break;
case TokenType.DateWordToken:
case TokenType.IgnorableSymbol:
// Date words and ignorable symbols can just be skipped over
break;
case TokenType.Am:
case TokenType.Pm:
if (raw.timeMark == TM.NotSet) {
raw.timeMark = (TM)tokenValue;
} else {
result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
LexTraceExit("0190 (AM/PM timeMark already set)", dps);
return false;
}
break;
case TokenType.UnknownToken:
if (Char.IsLetter(str.m_current)) {
result.SetFailure(ParseFailureKind.FormatWithParameter, "Format_UnknowDateTimeWord", str.Index);
LexTraceExit("0200", dps);
return (false);
}
#if !FEATURE_CORECLR
// If DateTimeParseIgnorePunctuation is defined, we want to have the V1.1 behavior of just
// ignoring any unrecognized punctuation and moving on to the next character
if (Environment.GetCompatibilityFlag(CompatibilityFlag.DateTimeParseIgnorePunctuation) && ((result.flags & ParseFlags.CaptureOffset) == 0)) {
str.GetNext();
LexTraceExit("0210 (success)", dps);
return true;
}
#endif // FEATURE_CORECLR
if ((str.m_current == '-' || str.m_current == '+') && ((result.flags & ParseFlags.TimeZoneUsed) == 0)) {
Int32 originalIndex = str.Index;
if (ParseTimeZone(ref str, ref result.timeZoneOffset)) {
result.flags |= ParseFlags.TimeZoneUsed;
LexTraceExit("0220 (success)", dps);
return true;
}
else {
// Time zone parse attempt failed. Fall through to punctuation handling.
str.Index = originalIndex;
}
}
// Visual Basic implements string to date conversions on top of DateTime.Parse:
// CDate("#10/10/95#")
//
if (VerifyValidPunctuation(ref str)) {
LexTraceExit("0230 (success)", dps);
return true;
}
result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
LexTraceExit("0240", dps);
return false;
}
LexTraceExit("0250 (success)", dps);
return true;
}
private static bool ProcessDateTimeSuffix(ref DateTimeResult result, ref DateTimeRawInfo raw, ref DateTimeToken dtok)
{
TokenType suffix = dtok.suffix;
if (suffix <= TokenType.SEP_DaySuff)
{
if (suffix != TokenType.SEP_YearSuff)
{
if (suffix != TokenType.SEP_MonthSuff)
{
if (suffix == TokenType.SEP_DaySuff)
{
if ((result.flags & ParseFlags.HaveDay) != (ParseFlags)0)
{
return false;
}
result.flags |= ParseFlags.HaveDay;
result.Day = dtok.num;
}
}
else
{
if ((result.flags & ParseFlags.HaveMonth) != (ParseFlags)0)
{
return false;
}
result.flags |= ParseFlags.HaveMonth;
result.Month = (raw.month = dtok.num);
}
}
else
{
if ((result.flags & ParseFlags.HaveYear) != (ParseFlags)0)
{
return false;
}
result.flags |= ParseFlags.HaveYear;
result.Year = (raw.year = dtok.num);
}
}
else
{
if (suffix != TokenType.SEP_HourSuff)
{
if (suffix != TokenType.SEP_MinuteSuff)
{
if (suffix == TokenType.SEP_SecondSuff)
{
if ((result.flags & ParseFlags.HaveSecond) != (ParseFlags)0)
{
return false;
}
result.flags |= ParseFlags.HaveSecond;
result.Second = dtok.num;
}
}
else
{
if ((result.flags & ParseFlags.HaveMinute) != (ParseFlags)0)
{
return false;
}
result.flags |= ParseFlags.HaveMinute;
result.Minute = dtok.num;
}
}
else
{
if ((result.flags & ParseFlags.HaveHour) != (ParseFlags)0)
{
return false;
}
result.flags |= ParseFlags.HaveHour;
result.Hour = dtok.num;
}
}
return true;
}
//
// A date suffix is found, use this method to put the number into the result.
//
private static bool ProcessDateTimeSuffix(ref DateTimeResult result, ref DateTimeRawInfo raw, ref DateTimeToken dtok)
{
switch (dtok.suffix)
{
case TokenType.SEP_YearSuff:
if ((result.flags & ParseFlags.HaveYear) != 0) {
return false;
}
result.flags |= ParseFlags.HaveYear;
result.Year = raw.year = dtok.num;
break;
case TokenType.SEP_MonthSuff:
if ((result.flags & ParseFlags.HaveMonth) != 0) {
return false;
}
result.flags |= ParseFlags.HaveMonth;
result.Month= raw.month = dtok.num;
break;
case TokenType.SEP_DaySuff:
if ((result.flags & ParseFlags.HaveDay) != 0) {
return false;
}
result.flags |= ParseFlags.HaveDay;
result.Day = dtok.num;
break;
case TokenType.SEP_HourSuff:
if ((result.flags & ParseFlags.HaveHour) != 0) {
return false;
}
result.flags |= ParseFlags.HaveHour;
result.Hour = dtok.num;
break;
case TokenType.SEP_MinuteSuff:
if ((result.flags & ParseFlags.HaveMinute) != 0) {
return false;
}
result.flags |= ParseFlags.HaveMinute;
result.Minute = dtok.num;
break;
case TokenType.SEP_SecondSuff:
if ((result.flags & ParseFlags.HaveSecond) != 0) {
return false;
}
result.flags |= ParseFlags.HaveSecond;
result.Second = dtok.num;
break;
}
return true;
}
[System.Security.SecuritySafeCritical] // auto-generated
internal static bool TryParse(String s, DateTimeFormatInfo dtfi, DateTimeStyles styles, ref DateTimeResult result) {
if (s == null) {
result.SetFailure(ParseFailureKind.ArgumentNull, "ArgumentNull_String", null, "s");
return false;
}
if (s.Length == 0) {
result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
return false;
}
Contract.Assert(dtfi != null, "dtfi == null");
#if _LOGGING
DTFITrace(dtfi);
#endif
DateTime time;
//
// First try the predefined format.
//
DS dps = DS.BEGIN; // Date Parsing State.
bool reachTerminalState = false;
DateTimeToken dtok = new DateTimeToken(); // The buffer to store the parsing token.
dtok.suffix = TokenType.SEP_Unk;
DateTimeRawInfo raw = new DateTimeRawInfo(); // The buffer to store temporary parsing information.
unsafe {
Int32 * numberPointer = stackalloc Int32[3];
raw.Init(numberPointer);
}
raw.hasSameDateAndTimeSeparators = dtfi.DateSeparator.Equals(dtfi.TimeSeparator, StringComparison.Ordinal);
result.calendar = dtfi.Calendar;
result.era = Calendar.CurrentEra;
//
// The string to be parsed. Use a __DTString wrapper so that we can trace the index which
// indicates the begining of next token.
//
__DTString str = new __DTString(s, dtfi);
str.GetNext();
//
// The following loop will break out when we reach the end of the str.
//
do {
//
// Call the lexer to get the next token.
//
// If we find a era in Lex(), the era value will be in raw.era.
if (!Lex(dps, ref str, ref dtok, ref raw, ref result, ref dtfi, styles))
{
TPTraceExit("0000", dps);
return false;
}
//
// If the token is not unknown, process it.
// Otherwise, just discard it.
//
if (dtok.dtt != DTT.Unk)
{
//
// Check if we got any CJK Date/Time suffix.
// Since the Date/Time suffix tells us the number belongs to year/month/day/hour/minute/second,
// store the number in the appropriate field in the result.
//
if (dtok.suffix != TokenType.SEP_Unk)
{
if (!ProcessDateTimeSuffix(ref result, ref raw, ref dtok)) {
result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
TPTraceExit("0010", dps);
return false;
}
dtok.suffix = TokenType.SEP_Unk; // Reset suffix to SEP_Unk;
}
if (dtok.dtt == DTT.NumLocalTimeMark) {
if (dps == DS.D_YNd || dps == DS.D_YN) {
// Consider this as ISO 8601 format:
// "yyyy-MM-dd'T'HH:mm:ss" 1999-10-31T02:00:00
TPTraceExit("0020", dps);
return (ParseISO8601(ref raw, ref str, styles, ref result));
}
else {
result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
TPTraceExit("0030", dps);
return false;
}
}
if (raw.hasSameDateAndTimeSeparators)
{
if (dtok.dtt == DTT.YearEnd || dtok.dtt == DTT.YearSpace || dtok.dtt == DTT.YearDateSep)
{
// When time and date separators are same and we are hitting a year number while the first parsed part of the string was recognized
// as part of time (and not a date) DS.T_Nt, DS.T_NNt then change the state to be a date so we try to parse it as a date instead
if (dps == DS.T_Nt)
{
dps = DS.D_Nd;
}
if (dps == DS.T_NNt)
{
dps = DS.D_NNd;
}
}
bool atEnd = str.AtEnd();
if (dateParsingStates[(int)dps][(int)dtok.dtt] == DS.ERROR || atEnd)
{
switch (dtok.dtt)
{
// we have the case of Serbia have dates in forms 'd.M.yyyy.' so we can expect '.' after the date parts.
// changing the token to end with space instead of Date Separator will avoid failing the parsing.
case DTT.YearDateSep: dtok.dtt = atEnd ? DTT.YearEnd : DTT.YearSpace; break;
case DTT.NumDatesep: dtok.dtt = atEnd ? DTT.NumEnd : DTT.NumSpace; break;
case DTT.NumTimesep: dtok.dtt = atEnd ? DTT.NumEnd : DTT.NumSpace; break;
case DTT.MonthDatesep: dtok.dtt = atEnd ? DTT.MonthEnd : DTT.MonthSpace; break;
}
}
}
//
// Advance to the next state, and continue
//
dps = dateParsingStates[(int)dps][(int)dtok.dtt];
if (dps == DS.ERROR)
{
result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
TPTraceExit("0040 (invalid state transition)", dps);
return false;
}
else if (dps > DS.ERROR)
{
if ((dtfi.FormatFlags & DateTimeFormatFlags.UseHebrewRule) != 0) {
if (!ProcessHebrewTerminalState(dps, ref result, ref styles, ref raw, dtfi)) {
TPTraceExit("0050 (ProcessHebrewTerminalState)", dps);
return false;
}
} else {
if (!ProcessTerminaltState(dps, ref result, ref styles, ref raw, dtfi)) {
TPTraceExit("0060 (ProcessTerminaltState)", dps);
return false;
}
}
reachTerminalState = true;
//
// If we have reached a terminal state, start over from DS.BEGIN again.
// For example, when we parsed "1999-12-23 13:30", we will reach a terminal state at "1999-12-23",
// and we start over so we can continue to parse "12:30".
//
dps = DS.BEGIN;
}
}
} while (dtok.dtt != DTT.End && dtok.dtt != DTT.NumEnd && dtok.dtt != DTT.MonthEnd);
if (!reachTerminalState) {
result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
TPTraceExit("0070 (did not reach terminal state)", dps);
return false;
}
AdjustTimeMark(dtfi, ref raw);
if (!AdjustHour(ref result.Hour, raw.timeMark)) {
result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
TPTraceExit("0080 (AdjustHour)", dps);
return false;
}
// Check if the parased string only contains hour/minute/second values.
bool bTimeOnly = (result.Year == -1 && result.Month == -1 && result.Day == -1);
//
// Check if any year/month/day is missing in the parsing string.
// If yes, get the default value from today's date.
//
if (!CheckDefaultDateTime(ref result, ref result.calendar, styles)) {
TPTraceExit("0090 (failed to fill in missing year/month/day defaults)", dps);
return false;
}
if (!result.calendar.TryToDateTime(result.Year, result.Month, result.Day,
result.Hour, result.Minute, result.Second, 0, result.era, out time)) {
result.SetFailure(ParseFailureKind.FormatBadDateTimeCalendar, "Format_BadDateTimeCalendar", null);
TPTraceExit("0100 (result.calendar.TryToDateTime)", dps);
return false;
}
if (raw.fraction > 0) {
time = time.AddTicks((long)Math.Round(raw.fraction * Calendar.TicksPerSecond));
}
//
// We have to check day of week before we adjust to the time zone.
// Otherwise, the value of day of week may change after adjustting to the time zone.
//
if (raw.dayOfWeek != -1) {
//
// Check if day of week is correct.
//
if (raw.dayOfWeek != (int)result.calendar.GetDayOfWeek(time)) {
result.SetFailure(ParseFailureKind.Format, "Format_BadDayOfWeek", null);
TPTraceExit("0110 (dayOfWeek check)", dps);
return false;
}
}
result.parsedDate = time;
if (!DetermineTimeZoneAdjustments(ref result, styles, bTimeOnly)) {
TPTraceExit("0120 (DetermineTimeZoneAdjustments)", dps);
return false;
}
TPTraceExit("0130 (success)", dps);
return true;
}
//
// This is the lexer. Check the character at the current index, and put the found token in dtok and
// some raw date/time information in raw.
//
private static Boolean Lex(
DS dps, ref __DTString str, ref DateTimeToken dtok, ref DateTimeRawInfo raw, ref DateTimeResult result, ref DateTimeFormatInfo dtfi, DateTimeStyles styles)
{
TokenType tokenType;
int tokenValue;
int indexBeforeSeparator;
char charBeforeSeparator;
TokenType sep;
dtok.dtt = DTT.Unk; // Assume the token is unkown.
str.GetRegularToken(out tokenType, out tokenValue, dtfi);
// Look at the regular token.
switch (tokenType)
{
case TokenType.NumberToken:
case TokenType.YearNumberToken:
if (raw.numCount == 3 || tokenValue == -1)
{
result.SetFailure(ParseFailureKind.Format, SR.Format_BadDateTime, null);
return false;
}
//
// This is a digit.
//
// If the previous parsing state is DS.T_NNt (like 12:01), and we got another number,
// so we will have a terminal state DS.TX_NNN (like 12:01:02).
// If the previous parsing state is DS.T_Nt (like 12:), and we got another number,
// so we will have a terminal state DS.TX_NN (like 12:01).
//
// Look ahead to see if the following character is a decimal point or timezone offset.
// This enables us to parse time in the forms of:
// "11:22:33.1234" or "11:22:33-08".
if (dps == DS.T_NNt)
{
if ((str.Index < str.len - 1))
{
char nextCh = str.Value[str.Index];
if (nextCh == '.')
{
// While ParseFraction can fail, it just means that there were no digits after
// the dot. In this case ParseFraction just removes the dot. This is actually
// valid for cultures like Albanian, that join the time marker to the time with
// with a dot: e.g. "9:03.MD"
ParseFraction(ref str, out raw.fraction);
}
}
}
if (dps == DS.T_NNt || dps == DS.T_Nt)
{
if ((str.Index < str.len - 1))
{
if (false == HandleTimeZone(ref str, ref result))
{
return false;
}
}
}
dtok.num = tokenValue;
if (tokenType == TokenType.YearNumberToken)
{
if (raw.year == -1)
{
raw.year = tokenValue;
//
// If we have number which has 3 or more digits (like "001" or "0001"),
// we assume this number is a year. Save the currnet raw.numCount in
// raw.year.
//
switch (sep = str.GetSeparatorToken(dtfi, out indexBeforeSeparator, out charBeforeSeparator))
{
case TokenType.SEP_End:
dtok.dtt = DTT.YearEnd;
break;
case TokenType.SEP_Am:
case TokenType.SEP_Pm:
if (raw.timeMark == TM.NotSet)
{
raw.timeMark = (sep == TokenType.SEP_Am ? TM.AM : TM.PM);
dtok.dtt = DTT.YearSpace;
}
else
{
result.SetFailure(ParseFailureKind.Format, SR.Format_BadDateTime, null);
}
break;
case TokenType.SEP_Space:
dtok.dtt = DTT.YearSpace;
break;
case TokenType.SEP_Date:
dtok.dtt = DTT.YearDateSep;
break;
case TokenType.SEP_Time:
if (!raw.hasSameDateAndTimeSeparators)
{
result.SetFailure(ParseFailureKind.Format, SR.Format_BadDateTime, null);
return false;
}
// we have the date and time separators are same and getting a year number, then change the token to YearDateSep as
// we are sure we are not parsing time.
dtok.dtt = DTT.YearDateSep;
break;
case TokenType.SEP_DateOrOffset:
// The separator is either a date separator or the start of a time zone offset. If the token will complete the date then
// process just the number and roll back the index so that the outer loop can attempt to parse the time zone offset.
if ((DateParsingStates(dps, DTT.YearDateSep) == DS.ERROR)
&& (DateParsingStates(dps, DTT.YearSpace) > DS.ERROR))
{
str.Index = indexBeforeSeparator;
str.m_current = charBeforeSeparator;
dtok.dtt = DTT.YearSpace;
}
else
{
dtok.dtt = DTT.YearDateSep;
}
break;
case TokenType.SEP_YearSuff:
case TokenType.SEP_MonthSuff:
case TokenType.SEP_DaySuff:
dtok.dtt = DTT.NumDatesuff;
dtok.suffix = sep;
break;
case TokenType.SEP_HourSuff:
case TokenType.SEP_MinuteSuff:
case TokenType.SEP_SecondSuff:
dtok.dtt = DTT.NumTimesuff;
dtok.suffix = sep;
break;
default:
// Invalid separator after number number.
result.SetFailure(ParseFailureKind.Format, SR.Format_BadDateTime, null);
return false;
}
return true;
}
result.SetFailure(ParseFailureKind.Format, SR.Format_BadDateTime, null);
return false;
}
switch (sep = str.GetSeparatorToken(dtfi, out indexBeforeSeparator, out charBeforeSeparator))
{
//
// Note here we check if the numCount is less than three.
// When we have more than three numbers, it will be caught as error in the state machine.
//
case TokenType.SEP_End:
dtok.dtt = DTT.NumEnd;
raw.AddNumber(dtok.num);
break;
case TokenType.SEP_Am:
case TokenType.SEP_Pm:
if (raw.timeMark == TM.NotSet)
{
raw.timeMark = (sep == TokenType.SEP_Am ? TM.AM : TM.PM);
dtok.dtt = DTT.NumAmpm;
// Fix AM/PM parsing case, e.g. "1/10 5 AM"
if (dps == DS.D_NN)
{
if (!ProcessTerminaltState(DS.DX_NN, ref result, ref styles, ref raw, dtfi))
{
return false;
}
}
raw.AddNumber(dtok.num);
}
else
{
result.SetFailure(ParseFailureKind.Format, SR.Format_BadDateTime, null);
break;
}
if (dps == DS.T_NNt || dps == DS.T_Nt)
{
if (false == HandleTimeZone(ref str, ref result))
{
return false;
}
}
break;
case TokenType.SEP_Space:
dtok.dtt = DTT.NumSpace;
raw.AddNumber(dtok.num);
break;
case TokenType.SEP_Date:
dtok.dtt = DTT.NumDatesep;
raw.AddNumber(dtok.num);
break;
case TokenType.SEP_DateOrOffset:
// The separator is either a date separator or the start of a time zone offset. If the token will complete the date then
// process just the number and roll back the index so that the outer loop can attempt to parse the time zone offset.
if ((DateParsingStates(dps, DTT.NumDatesep) == DS.ERROR)
&& (DateParsingStates(dps, DTT.NumSpace) > DS.ERROR))
{
str.Index = indexBeforeSeparator;
str.m_current = charBeforeSeparator;
dtok.dtt = DTT.NumSpace;
}
else
{
dtok.dtt = DTT.NumDatesep;
}
raw.AddNumber(dtok.num);
break;
case TokenType.SEP_Time:
if (raw.hasSameDateAndTimeSeparators &&
(dps == DS.D_Y || dps == DS.D_YN || dps == DS.D_YNd || dps == DS.D_YM || dps == DS.D_YMd))
{
// we are parsing a date and we have the time separator same as date separator, so we mark the token as date separator
dtok.dtt = DTT.NumDatesep;
raw.AddNumber(dtok.num);
break;
}
dtok.dtt = DTT.NumTimesep;
raw.AddNumber(dtok.num);
break;
case TokenType.SEP_YearSuff:
dtok.num = dtfi.Calendar.ToFourDigitYear(tokenValue);
dtok.dtt = DTT.NumDatesuff;
dtok.suffix = sep;
break;
case TokenType.SEP_MonthSuff:
case TokenType.SEP_DaySuff:
dtok.dtt = DTT.NumDatesuff;
dtok.suffix = sep;
break;
case TokenType.SEP_HourSuff:
case TokenType.SEP_MinuteSuff:
case TokenType.SEP_SecondSuff:
dtok.dtt = DTT.NumTimesuff;
dtok.suffix = sep;
break;
case TokenType.SEP_LocalTimeMark:
dtok.dtt = DTT.NumLocalTimeMark;
raw.AddNumber(dtok.num);
break;
default:
// Invalid separator after number number.
result.SetFailure(ParseFailureKind.Format, SR.Format_BadDateTime, null);
return false;
}
break;
case TokenType.HebrewNumber:
if (tokenValue >= 100)
{
// This is a year number
if (raw.year == -1)
{
raw.year = tokenValue;
//
// If we have number which has 3 or more digits (like "001" or "0001"),
// we assume this number is a year. Save the currnet raw.numCount in
// raw.year.
//
switch (sep = str.GetSeparatorToken(dtfi, out indexBeforeSeparator, out charBeforeSeparator))
{
case TokenType.SEP_End:
dtok.dtt = DTT.YearEnd;
break;
case TokenType.SEP_Space:
dtok.dtt = DTT.YearSpace;
break;
case TokenType.SEP_DateOrOffset:
// The separator is either a date separator or the start of a time zone offset. If the token will complete the date then
// process just the number and roll back the index so that the outer loop can attempt to parse the time zone offset.
if (DateParsingStates(dps, DTT.YearSpace) > DS.ERROR)
{
str.Index = indexBeforeSeparator;
str.m_current = charBeforeSeparator;
dtok.dtt = DTT.YearSpace;
break;
}
goto default;
default:
// Invalid separator after number number.
result.SetFailure(ParseFailureKind.Format, SR.Format_BadDateTime, null);
return false;
}
}
else
{
// Invalid separator after number number.
result.SetFailure(ParseFailureKind.Format, SR.Format_BadDateTime, null);
return false;
}
}
else
{
// This is a day number
dtok.num = tokenValue;
raw.AddNumber(dtok.num);
switch (sep = str.GetSeparatorToken(dtfi, out indexBeforeSeparator, out charBeforeSeparator))
{
//
// Note here we check if the numCount is less than three.
// When we have more than three numbers, it will be caught as error in the state machine.
//
case TokenType.SEP_End:
dtok.dtt = DTT.NumEnd;
break;
case TokenType.SEP_Space:
case TokenType.SEP_Date:
dtok.dtt = DTT.NumDatesep;
break;
case TokenType.SEP_DateOrOffset:
// The separator is either a date separator or the start of a time zone offset. If the token will complete the date then
// process just the number and roll back the index so that the outer loop can attempt to parse the time zone offset.
if ((DateParsingStates(dps, DTT.NumDatesep) == DS.ERROR)
&& (DateParsingStates(dps, DTT.NumSpace) > DS.ERROR))
{
str.Index = indexBeforeSeparator;
str.m_current = charBeforeSeparator;
dtok.dtt = DTT.NumSpace;
}
else
{
dtok.dtt = DTT.NumDatesep;
}
break;
default:
// Invalid separator after number number.
result.SetFailure(ParseFailureKind.Format, SR.Format_BadDateTime, null);
return false;
}
}
break;
case TokenType.DayOfWeekToken:
if (raw.dayOfWeek == -1)
{
//
// This is a day of week name.
//
raw.dayOfWeek = tokenValue;
dtok.dtt = DTT.DayOfWeek;
}
else
{
result.SetFailure(ParseFailureKind.Format, SR.Format_BadDateTime, null);
return false;
}
break;
case TokenType.MonthToken:
if (raw.month == -1)
{
//
// This is a month name
//
switch (sep = str.GetSeparatorToken(dtfi, out indexBeforeSeparator, out charBeforeSeparator))
{
case TokenType.SEP_End:
dtok.dtt = DTT.MonthEnd;
break;
case TokenType.SEP_Space:
dtok.dtt = DTT.MonthSpace;
break;
case TokenType.SEP_Date:
dtok.dtt = DTT.MonthDatesep;
break;
case TokenType.SEP_Time:
if (!raw.hasSameDateAndTimeSeparators)
{
result.SetFailure(ParseFailureKind.Format, SR.Format_BadDateTime, null);
return false;
}
// we have the date and time separators are same and getting a Month name, then change the token to MonthDatesep as
// we are sure we are not parsing time.
dtok.dtt = DTT.MonthDatesep;
break;
case TokenType.SEP_DateOrOffset:
// The separator is either a date separator or the start of a time zone offset. If the token will complete the date then
// process just the number and roll back the index so that the outer loop can attempt to parse the time zone offset.
if ((DateParsingStates(dps, DTT.MonthDatesep) == DS.ERROR)
&& (DateParsingStates(dps, DTT.MonthSpace) > DS.ERROR))
{
str.Index = indexBeforeSeparator;
str.m_current = charBeforeSeparator;
dtok.dtt = DTT.MonthSpace;
}
else
{
dtok.dtt = DTT.MonthDatesep;
}
break;
default:
//Invalid separator after month name
result.SetFailure(ParseFailureKind.Format, SR.Format_BadDateTime, null);
return false;
}
raw.month = tokenValue;
}
else
{
result.SetFailure(ParseFailureKind.Format, SR.Format_BadDateTime, null);
return false;
}
break;
case TokenType.EraToken:
if (result.era != -1)
{
result.era = tokenValue;
dtok.dtt = DTT.Era;
}
else
{
result.SetFailure(ParseFailureKind.Format, SR.Format_BadDateTime, null);
return false;
}
break;
case TokenType.JapaneseEraToken:
throw new NotSupportedException();
case TokenType.TEraToken:
throw new NotSupportedException();
case TokenType.TimeZoneToken:
//
// This is a timezone designator
//
// NOTENOTE : for now, we only support "GMT" and "Z" (for Zulu time).
//
if ((result.flags & ParseFlags.TimeZoneUsed) != 0)
{
// Should not have two timezone offsets.
result.SetFailure(ParseFailureKind.Format, SR.Format_BadDateTime, null);
return false;
}
dtok.dtt = DTT.TimeZone;
result.flags |= ParseFlags.TimeZoneUsed;
result.timeZoneOffset = new TimeSpan(0);
result.flags |= ParseFlags.TimeZoneUtc;
break;
case TokenType.EndOfString:
dtok.dtt = DTT.End;
break;
case TokenType.DateWordToken:
case TokenType.IgnorableSymbol:
// Date words and ignorable symbols can just be skipped over
break;
case TokenType.Am:
case TokenType.Pm:
if (raw.timeMark == TM.NotSet)
{
raw.timeMark = (TM)tokenValue;
}
else
{
result.SetFailure(ParseFailureKind.Format, SR.Format_BadDateTime, null);
return false;
}
break;
case TokenType.UnknownToken:
if (Char.IsLetter(str.m_current))
{
result.SetFailure(ParseFailureKind.FormatWithParameter, SR.Format_UnknowDateTimeWord, str.Index);
return (false);
}
if ((str.m_current == '-' || str.m_current == '+') && ((result.flags & ParseFlags.TimeZoneUsed) == 0))
{
Int32 originalIndex = str.Index;
if (ParseTimeZone(ref str, ref result.timeZoneOffset))
{
result.flags |= ParseFlags.TimeZoneUsed;
return true;
}
else
{
// Time zone parse attempt failed. Fall through to punctuation handling.
str.Index = originalIndex;
}
}
// Visual Basic implements string to date conversions on top of DateTime.Parse:
// CDate("#10/10/95#")
//
if (VerifyValidPunctuation(ref str))
{
return true;
}
result.SetFailure(ParseFailureKind.Format, SR.Format_BadDateTime, null);
return false;
}
return true;
}
[System.Security.SecuritySafeCritical] // auto-generated
private static Boolean Lex(
#if !FEATURE_CORECLR
DS dps, ref __DTString str, ref DateTimeToken dtok, ref DateTimeRawInfo raw, ref DateTimeResult result, ref DateTimeFormatInfo dtfi, DateTimeStyles styles)
private static bool Lex(DS dps, ref __DTString str, ref DateTimeToken dtok, ref DateTimeRawInfo raw, ref DateTimeResult result, ref DateTimeFormatInfo dtfi)
{
TokenType type;
int num;
int num2;
char ch;
TokenType type2;
dtok.dtt = DTT.Unk;
str.GetRegularToken(out type, out num, dtfi);
switch (type)
{
case TokenType.NumberToken:
case TokenType.YearNumberToken:
if ((raw.numCount != 3) && (num != -1))
{
if ((dps == DS.T_NNt) && (str.Index < (str.len - 1)))
{
char ch2 = str.Value[str.Index];
if (ch2 == '.')
{
ParseFraction(ref str, out raw.fraction);
}
}
if (((dps == DS.T_NNt) || (dps == DS.T_Nt)) && (str.Index < (str.len - 1)))
{
char c = str.Value[str.Index];
int num3 = 0;
while (char.IsWhiteSpace(c) && ((str.Index + num3) < (str.len - 1)))
{
num3++;
c = str.Value[str.Index + num3];
}
switch (c)
{
case '+':
case '-':
str.Index += num3;
if ((result.flags & ParseFlags.TimeZoneUsed) != 0)
{
result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
return false;
}
result.flags |= ParseFlags.TimeZoneUsed;
if (!ParseTimeZone(ref str, ref result.timeZoneOffset))
{
result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
return false;
}
break;
}
}
dtok.num = num;
if (type != TokenType.YearNumberToken)
{
switch ((type2 = str.GetSeparatorToken(dtfi, out num2, out ch)))
{
case TokenType.SEP_End:
dtok.dtt = DTT.NumEnd;
raw.AddNumber(dtok.num);
goto Label_0A1E;
case TokenType.SEP_Space:
dtok.dtt = DTT.NumSpace;
raw.AddNumber(dtok.num);
goto Label_0A1E;
case TokenType.SEP_Am:
case TokenType.SEP_Pm:
if (raw.timeMark == TM.NotSet)
{
raw.timeMark = (type2 == TokenType.SEP_Am) ? TM.AM : TM.PM;
dtok.dtt = DTT.NumAmpm;
raw.AddNumber(dtok.num);
}
else
{
result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
}
goto Label_0A1E;
case TokenType.SEP_Time:
dtok.dtt = DTT.NumTimesep;
raw.AddNumber(dtok.num);
goto Label_0A1E;
case TokenType.SEP_YearSuff:
dtok.num = dtfi.Calendar.ToFourDigitYear(num);
dtok.dtt = DTT.NumDatesuff;
dtok.suffix = type2;
goto Label_0A1E;
case TokenType.SEP_Date:
dtok.dtt = DTT.NumDatesep;
raw.AddNumber(dtok.num);
goto Label_0A1E;
case TokenType.SEP_MonthSuff:
case TokenType.SEP_DaySuff:
dtok.dtt = DTT.NumDatesuff;
dtok.suffix = type2;
goto Label_0A1E;
case TokenType.SEP_HourSuff:
case TokenType.SEP_MinuteSuff:
case TokenType.SEP_SecondSuff:
dtok.dtt = DTT.NumTimesuff;
dtok.suffix = type2;
goto Label_0A1E;
case TokenType.SEP_LocalTimeMark:
dtok.dtt = DTT.NumLocalTimeMark;
raw.AddNumber(dtok.num);
goto Label_0A1E;
case TokenType.SEP_DateOrOffset:
if ((dateParsingStates[(int) dps][4] == DS.ERROR) && (dateParsingStates[(int) dps][3] > DS.ERROR))
{
str.Index = num2;
str.m_current = ch;
dtok.dtt = DTT.NumSpace;
}
else
{
dtok.dtt = DTT.NumDatesep;
}
raw.AddNumber(dtok.num);
goto Label_0A1E;
}
result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
return false;
}
if (raw.year != -1)
{
result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
return false;
}
raw.year = num;
switch ((type2 = str.GetSeparatorToken(dtfi, out num2, out ch)))
{
case TokenType.SEP_Pm:
case TokenType.SEP_Am:
if (raw.timeMark == TM.NotSet)
{
raw.timeMark = (type2 == TokenType.SEP_Am) ? TM.AM : TM.PM;
dtok.dtt = DTT.YearSpace;
}
else
{
result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
}
goto Label_0354;
case TokenType.SEP_Date:
dtok.dtt = DTT.YearDateSep;
goto Label_0354;
case TokenType.SEP_YearSuff:
case TokenType.SEP_MonthSuff:
case TokenType.SEP_DaySuff:
dtok.dtt = DTT.NumDatesuff;
dtok.suffix = type2;
goto Label_0354;
case TokenType.SEP_End:
dtok.dtt = DTT.YearEnd;
goto Label_0354;
case TokenType.SEP_Space:
dtok.dtt = DTT.YearSpace;
goto Label_0354;
case TokenType.SEP_HourSuff:
case TokenType.SEP_MinuteSuff:
case TokenType.SEP_SecondSuff:
dtok.dtt = DTT.NumTimesuff;
dtok.suffix = type2;
goto Label_0354;
case TokenType.SEP_DateOrOffset:
if ((dateParsingStates[(int) dps][13] == DS.ERROR) && (dateParsingStates[(int) dps][12] > DS.ERROR))
{
str.Index = num2;
str.m_current = ch;
dtok.dtt = DTT.YearSpace;
}
else
{
dtok.dtt = DTT.YearDateSep;
}
goto Label_0354;
}
result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
return false;
}
result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
return false;
case TokenType.Am:
case TokenType.Pm:
if (raw.timeMark != TM.NotSet)
{
result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
return false;
}
raw.timeMark = (TM) num;
break;
case TokenType.MonthToken:
{
if (raw.month != -1)
{
result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
return false;
}
TokenType type8 = type2 = str.GetSeparatorToken(dtfi, out num2, out ch);
if (type8 > TokenType.SEP_Space)
{
switch (type8)
{
case TokenType.SEP_Date:
dtok.dtt = DTT.MonthDatesep;
goto Label_0823;
case TokenType.SEP_DateOrOffset:
if ((dateParsingStates[(int) dps][8] == DS.ERROR) && (dateParsingStates[(int) dps][7] > DS.ERROR))
{
str.Index = num2;
str.m_current = ch;
dtok.dtt = DTT.MonthSpace;
}
else
{
dtok.dtt = DTT.MonthDatesep;
}
goto Label_0823;
}
}
else
{
switch (type8)
{
case TokenType.SEP_End:
dtok.dtt = DTT.MonthEnd;
goto Label_0823;
case TokenType.SEP_Space:
dtok.dtt = DTT.MonthSpace;
goto Label_0823;
}
}
result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
return false;
}
case TokenType.EndOfString:
dtok.dtt = DTT.End;
break;
case TokenType.DayOfWeekToken:
if (raw.dayOfWeek != -1)
{
result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
return false;
}
raw.dayOfWeek = num;
dtok.dtt = DTT.DayOfWeek;
break;
case TokenType.TimeZoneToken:
dtok.dtt = DTT.TimeZone;
result.flags |= ParseFlags.TimeZoneUsed;
result.timeZoneOffset = new TimeSpan(0L);
result.flags |= ParseFlags.TimeZoneUtc;
break;
case TokenType.EraToken:
if (result.era == -1)
{
result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
return false;
}
result.era = num;
dtok.dtt = DTT.Era;
break;
case TokenType.UnknownToken:
if (!char.IsLetter(str.m_current))
{
if (Environment.GetCompatibilityFlag(CompatibilityFlag.DateTimeParseIgnorePunctuation) && ((result.flags & ParseFlags.CaptureOffset) == 0))
{
str.GetNext();
return true;
}
if (((str.m_current == '-') || (str.m_current == '+')) && ((result.flags & ParseFlags.TimeZoneUsed) == 0))
{
int index = str.Index;
if (ParseTimeZone(ref str, ref result.timeZoneOffset))
{
result.flags |= ParseFlags.TimeZoneUsed;
return true;
}
str.Index = index;
}
if (VerifyValidPunctuation(ref str))
{
return true;
}
result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
return false;
}
result.SetFailure(ParseFailureKind.FormatWithParameter, "Format_UnknowDateTimeWord", str.Index);
return false;
case TokenType.HebrewNumber:
if (num < 100)
{
dtok.num = num;
raw.AddNumber(dtok.num);
switch ((type2 = str.GetSeparatorToken(dtfi, out num2, out ch)))
{
case TokenType.SEP_Date:
case TokenType.SEP_Space:
dtok.dtt = DTT.NumDatesep;
goto Label_0A1E;
case TokenType.SEP_DateOrOffset:
if ((dateParsingStates[(int) dps][4] == DS.ERROR) && (dateParsingStates[(int) dps][3] > DS.ERROR))
{
str.Index = num2;
str.m_current = ch;
dtok.dtt = DTT.NumSpace;
}
else
{
dtok.dtt = DTT.NumDatesep;
}
goto Label_0A1E;
case TokenType.SEP_End:
dtok.dtt = DTT.NumEnd;
goto Label_0A1E;
}
result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
return false;
}
if (raw.year != -1)
{
result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
return false;
}
raw.year = num;
switch ((type2 = str.GetSeparatorToken(dtfi, out num2, out ch)))
{
case TokenType.SEP_End:
dtok.dtt = DTT.YearEnd;
goto Label_0A1E;
case TokenType.SEP_Space:
dtok.dtt = DTT.YearSpace;
goto Label_0A1E;
case TokenType.SEP_DateOrOffset:
if (dateParsingStates[(int) dps][12] > DS.ERROR)
{
str.Index = num2;
str.m_current = ch;
dtok.dtt = DTT.YearSpace;
goto Label_0A1E;
}
break;
}
result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
return false;
case TokenType.JapaneseEraToken:
result.calendar = JapaneseCalendar.GetDefaultInstance();
dtfi = DateTimeFormatInfo.GetJapaneseCalendarDTFI();
if (result.era == -1)
{
result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
return false;
}
result.era = num;
dtok.dtt = DTT.Era;
break;
case TokenType.TEraToken:
result.calendar = TaiwanCalendar.GetDefaultInstance();
dtfi = DateTimeFormatInfo.GetTaiwanCalendarDTFI();
if (result.era == -1)
{
result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
return false;
}
result.era = num;
dtok.dtt = DTT.Era;
break;
}
goto Label_0A1E;
Label_0354:
return true;
Label_0823:
raw.month = num;
Label_0A1E:
return true;
}
internal static unsafe bool TryParse(string s, DateTimeFormatInfo dtfi, DateTimeStyles styles, ref DateTimeResult result)
{
DateTime time;
if (s == null)
{
result.SetFailure(ParseFailureKind.ArgumentNull, "ArgumentNull_String", null, "s");
return false;
}
if (s.Length == 0)
{
result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
return false;
}
DS bEGIN = DS.BEGIN;
bool flag = false;
DateTimeToken dtok = new DateTimeToken {
suffix = TokenType.SEP_Unk
};
DateTimeRawInfo raw = new DateTimeRawInfo();
int* numberBuffer = stackalloc int[3];
raw.Init(numberBuffer);
result.calendar = dtfi.Calendar;
result.era = 0;
__DTString str = new __DTString(s, dtfi);
str.GetNext();
do
{
if (!Lex(bEGIN, ref str, ref dtok, ref raw, ref result, ref dtfi))
{
return false;
}
if (dtok.dtt != DTT.Unk)
{
if (dtok.suffix != TokenType.SEP_Unk)
{
if (!ProcessDateTimeSuffix(ref result, ref raw, ref dtok))
{
result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
return false;
}
dtok.suffix = TokenType.SEP_Unk;
}
if (dtok.dtt == DTT.NumLocalTimeMark)
{
switch (bEGIN)
{
case DS.D_YNd:
case DS.D_YN:
return ParseISO8601(ref raw, ref str, styles, ref result);
}
result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
return false;
}
bEGIN = dateParsingStates[(int) bEGIN][(int) dtok.dtt];
if (bEGIN == DS.ERROR)
{
result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
return false;
}
if (bEGIN > DS.ERROR)
{
if ((dtfi.FormatFlags & DateTimeFormatFlags.UseHebrewRule) != DateTimeFormatFlags.None)
{
if (!ProcessHebrewTerminalState(bEGIN, ref result, ref styles, ref raw, dtfi))
{
return false;
}
}
else if (!ProcessTerminaltState(bEGIN, ref result, ref styles, ref raw, dtfi))
{
return false;
}
flag = true;
bEGIN = DS.BEGIN;
}
}
}
while (((dtok.dtt != DTT.End) && (dtok.dtt != DTT.NumEnd)) && (dtok.dtt != DTT.MonthEnd));
if (!flag)
{
result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
return false;
}
AdjustTimeMark(dtfi, ref raw);
if (!AdjustHour(ref result.Hour, raw.timeMark))
{
result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
return false;
}
bool bTimeOnly = ((result.Year == -1) && (result.Month == -1)) && (result.Day == -1);
if (!CheckDefaultDateTime(ref result, ref result.calendar, styles))
{
return false;
}
if (!result.calendar.TryToDateTime(result.Year, result.Month, result.Day, result.Hour, result.Minute, result.Second, 0, result.era, out time))
{
result.SetFailure(ParseFailureKind.FormatBadDateTimeCalendar, "Format_BadDateTimeCalendar", null);
return false;
}
if (raw.fraction > 0.0)
{
time = time.AddTicks((long) Math.Round((double) (raw.fraction * 10000000.0)));
}
if ((raw.dayOfWeek != -1) && (raw.dayOfWeek != result.calendar.GetDayOfWeek(time)))
{
result.SetFailure(ParseFailureKind.Format, "Format_BadDayOfWeek", null);
return false;
}
result.parsedDate = time;
if (!DetermineTimeZoneAdjustments(ref result, styles, bTimeOnly))
{
return false;
}
return true;
}
//
// This is the lexer. Check the character at the current index, and put the found token in dtok and
// some raw date/time information in raw.
//
private static Boolean Lex(
DS dps, ref __DTString str, ref DateTimeToken dtok, ref DateTimeRawInfo raw, ref DateTimeResult result, ref DateTimeFormatInfo dtfi) {
TokenType tokenType;
int tokenValue;
TokenType sep;
dtok.dtt = DTT.Unk; // Assume the token is unkown.
str.GetRegularToken(out tokenType, out tokenValue, dtfi);
// Look at the regular token.
switch (tokenType) {
case TokenType.NumberToken:
case TokenType.YearNumberToken:
if (raw.numCount == 3 || tokenValue == -1) {
result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
return false;
}
//
// This is a digit.
//
// If the previous parsing state is DS.T_NNt (like 12:01), and we got another number,
// so we will have a terminal state DS.TX_NNN (like 12:01:02).
// If the previous parsing state is DS.T_Nt (like 12:), and we got another number,
// so we will have a terminal state DS.TX_NN (like 12:01).
//
// Look ahead to see if the following character is a decimal point or timezone offset.
// This enables us to parse time in the forms of:
// "11:22:33.1234" or "11:22:33-08".
if (dps == DS.T_NNt) {
if ((str.Index < str.len - 1)) {
char nextCh = str.Value[str.Index];
if (nextCh == '.') {
// While ParseFraction can fail, it just means that there were no digits after
// the dot. In this case ParseFraction just swallows the dot. This is actually
// valid for cultures like Albanian, that join the time marker to the time with
// with a dot: e.g. "9:03.MD"
ParseFraction(ref str, out raw.fraction);
}
}
}
if (dps == DS.T_NNt || dps == DS.T_Nt) {
if ((str.Index < str.len - 1)) {
char nextCh = str.Value[str.Index];
// Skip whitespace, but don't update the index unless we find a time zone marker
int whitespaceCount = 0;
while (Char.IsWhiteSpace(nextCh) && str.Index + whitespaceCount < str.len - 1) {
whitespaceCount++;
nextCh = str.Value[str.Index + whitespaceCount];
}
if (nextCh == '+' || nextCh == '-') {
str.Index += whitespaceCount;
if ((result.flags & ParseFlags.TimeZoneUsed) != 0) {
// Should not have two timezone offsets.
result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
return false;
}
result.flags |= ParseFlags.TimeZoneUsed;
if (!ParseTimeZone(ref str, ref result.timeZoneOffset)) {
result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
return false;
}
}
}
}
dtok.num = tokenValue;
if (tokenType == TokenType.YearNumberToken)
{
if (raw.year == -1)
{
raw.year = tokenValue;
//
// If we have number which has 3 or more digits (like "001" or "0001"),
// we assume this number is a year. Save the currnet raw.numCount in
// raw.year.
//
switch (sep = str.GetSeparatorToken(dtfi)) {
case TokenType.SEP_End:
dtok.dtt = DTT.YearEnd;
break;
case TokenType.SEP_Am:
case TokenType.SEP_Pm:
if (raw.timeMark == TM.NotSet) {
raw.timeMark = (sep == TokenType.SEP_Am ? TM.AM : TM.PM);
dtok.dtt = DTT.YearSpace;
} else {
result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
}
break;
case TokenType.SEP_Space:
dtok.dtt = DTT.YearSpace;
break;
case TokenType.SEP_Date:
dtok.dtt = DTT.YearDateSep;
break;
case TokenType.SEP_YearSuff:
case TokenType.SEP_MonthSuff:
case TokenType.SEP_DaySuff:
dtok.dtt = DTT.NumDatesuff;
dtok.suffix = sep;
break;
case TokenType.SEP_HourSuff:
case TokenType.SEP_MinuteSuff:
case TokenType.SEP_SecondSuff:
dtok.dtt = DTT.NumTimesuff;
dtok.suffix = sep;
break;
default:
// Invalid separator after number number.
result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
return false;
}
//
// Found the token already. Return now.
//
return true;
}
result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
return false;
}
switch (sep = str.GetSeparatorToken(dtfi))
{
//
// Note here we check if the numCount is less than three.
// When we have more than three numbers, it will be caught as error in the state machine.
//
case TokenType.SEP_End:
dtok.dtt = DTT.NumEnd;
raw.AddNumber(dtok.num);
break;
case TokenType.SEP_Am:
case TokenType.SEP_Pm:
if (raw.timeMark == TM.NotSet) {
raw.timeMark = (sep == TokenType.SEP_Am ? TM.AM : TM.PM);
dtok.dtt = DTT.NumAmpm;
raw.AddNumber(dtok.num);
} else {
result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
}
break;
case TokenType.SEP_Space:
dtok.dtt = DTT.NumSpace;
raw.AddNumber(dtok.num);
break;
case TokenType.SEP_Date:
dtok.dtt = DTT.NumDatesep;
raw.AddNumber(dtok.num);
break;
case TokenType.SEP_Time:
if ((result.flags & ParseFlags.TimeZoneUsed) == 0) {
dtok.dtt = DTT.NumTimesep;
raw.AddNumber(dtok.num);
} else {
// If we already got timezone, there should be no
// time separator again.
result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
return false;
}
break;
case TokenType.SEP_YearSuff:
dtok.num = dtfi.Calendar.ToFourDigitYear(tokenValue);
dtok.dtt = DTT.NumDatesuff;
dtok.suffix = sep;
break;
case TokenType.SEP_MonthSuff:
case TokenType.SEP_DaySuff:
dtok.dtt = DTT.NumDatesuff;
dtok.suffix = sep;
break;
case TokenType.SEP_HourSuff:
case TokenType.SEP_MinuteSuff:
case TokenType.SEP_SecondSuff:
dtok.dtt = DTT.NumTimesuff;
dtok.suffix = sep;
break;
case TokenType.SEP_LocalTimeMark:
dtok.dtt = DTT.NumLocalTimeMark;
raw.AddNumber(dtok.num);
break;
default:
// Invalid separator after number number.
result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
return false;
}
break;
case TokenType.HebrewNumber:
if (tokenValue >= 100) {
// This is a year number
if (raw.year == -1) {
raw.year = tokenValue;
//
// If we have number which has 3 or more digits (like "001" or "0001"),
// we assume this number is a year. Save the currnet raw.numCount in
// raw.year.
//
switch (sep = str.GetSeparatorToken(dtfi)) {
case TokenType.SEP_End:
dtok.dtt = DTT.YearEnd;
break;
case TokenType.SEP_Space:
dtok.dtt = DTT.YearSpace;
break;
default:
// Invalid separator after number number.
result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
return false;
}
} else {
// Invalid separator after number number.
result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
return false;
}
} else {
// This is a day number
dtok.num = tokenValue;
raw.AddNumber(dtok.num);
switch (sep = str.GetSeparatorToken(dtfi)) {
//
// Note here we check if the numCount is less than three.
// When we have more than three numbers, it will be caught as error in the state machine.
//
case TokenType.SEP_End:
dtok.dtt = DTT.NumEnd;
break;
case TokenType.SEP_Space:
case TokenType.SEP_Date:
dtok.dtt = DTT.NumDatesep;
break;
default:
// Invalid separator after number number.
result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
return false;
}
}
break;
case TokenType.DayOfWeekToken:
if (raw.dayOfWeek == -1)
{
//
// This is a day of week name.
//
raw.dayOfWeek = tokenValue;
dtok.dtt = DTT.DayOfWeek;
} else {
result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
return false;
}
break;
case TokenType.MonthToken:
if (raw.month == -1)
{
//
// This is a month name
//
switch(sep=str.GetSeparatorToken(dtfi))
{
case TokenType.SEP_End:
dtok.dtt = DTT.MonthEnd;
break;
case TokenType.SEP_Space:
dtok.dtt = DTT.MonthSpace;
break;
case TokenType.SEP_Date:
dtok.dtt = DTT.MonthDatesep;
break;
default:
//Invalid separator after month name
result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
return false;
}
raw.month = tokenValue;
} else {
result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
return false;
}
break;
case TokenType.EraToken:
if (result.era != -1) {
result.era = tokenValue;
dtok.dtt = DTT.Era;
} else {
result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
return false;
}
break;
case TokenType.JapaneseEraToken:
// Special case for Japanese. We allow Japanese era name to be used even if the calendar is not Japanese Calendar.
result.calendar = JapaneseCalendar.GetDefaultInstance();
dtfi = DateTimeFormatInfo.GetJapaneseCalendarDTFI();
if (result.era != -1) {
result.era = tokenValue;
dtok.dtt = DTT.Era;
} else {
result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
return false;
}
break;
case TokenType.TEraToken:
// Special case for Taiwan.
result.calendar = TaiwanCalendar.GetDefaultInstance();
dtfi = DateTimeFormatInfo.GetTaiwanCalendarDTFI();
if (result.era != -1) {
result.era = tokenValue;
dtok.dtt = DTT.Era;
} else {
result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
return false;
}
break;
case TokenType.TimeZoneToken:
//
dtok.dtt = DTT.TimeZone;
result.flags |= ParseFlags.TimeZoneUsed;
result.timeZoneOffset = new TimeSpan(0);
result.flags |= ParseFlags.TimeZoneUtc;
break;
case TokenType.EndOfString:
dtok.dtt = DTT.End;
break;
case TokenType.DateWordToken:
case TokenType.IgnorableSymbol:
// Date words and ignorable symbols can just be skipped over
break;
case TokenType.Am:
case TokenType.Pm:
if (raw.timeMark == TM.NotSet) {
raw.timeMark = (TM)tokenValue;
} else {
result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
return false;
}
break;
case TokenType.UnknownToken:
if (Char.IsLetter(str.m_current)) {
result.SetFailure(ParseFailureKind.FormatWithParameter, "Format_UnknowDateTimeWord", str.Index);
return (false);
}
else {
// If DateTimeParseIgnorePunctuation is defined, we want to have the V1.1 behavior of just
// ignoring any unrecognized punctuation and moving on to the next character
if (Environment.GetCompatibilityFlag(CompatibilityFlag.DateTimeParseIgnorePunctuation)) {
str.GetNext();
return true;
}
else {
if (VerifyValidPunctuation(ref str)) {
return true;
}
}
result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
return false;
}
}
return true;
}
//
// This is the real method to do the parsing work.
//
internal static bool TryParse(String s, DateTimeFormatInfo dtfi, DateTimeStyles styles, ref DateTimeResult result) {
if (s == null) {
result.SetFailure(ParseFailureKind.ArgumentNull, "ArgumentNull_String", null, "s");
return false;
}
if (s.Length == 0) {
result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
return false;
}
BCLDebug.Assert(dtfi != null, "dtfi == null");
DateTime time;
//
// First try the predefined format.
//
DS dps = DS.BEGIN; // Date Parsing State.
bool reachTerminalState = false;
DateTimeToken dtok = new DateTimeToken(); // The buffer to store the parsing token.
dtok.suffix = TokenType.SEP_Unk;
DateTimeRawInfo raw = new DateTimeRawInfo(); // The buffer to store temporary parsing information.
unsafe {
Int32 * numberPointer = stackalloc Int32[3];
raw.Init(numberPointer);
}
result.calendar = dtfi.Calendar;
result.era = Calendar.CurrentEra;
//
// The string to be parsed. Use a __DTString wrapper so that we can trace the index which
// indicates the begining of next token.
//
__DTString str = new __DTString(s, dtfi);
str.GetNext();
//
// The following loop will break out when we reach the end of the str.
//
do {
//
// Call the lexer to get the next token.
//
// If we find a era in Lex(), the era value will be in raw.era.
if (!Lex(dps, ref str, ref dtok, ref raw, ref result, ref dtfi)) {
return false;
}
//
// If the token is not unknown, process it.
// Otherwise, just discard it.
//
if (dtok.dtt != DTT.Unk)
{
//
// Check if we got any CJK Date/Time suffix.
// Since the Date/Time suffix tells us the number belongs to year/month/day/hour/minute/second,
// store the number in the appropriate field in the result.
//
if (dtok.suffix != TokenType.SEP_Unk)
{
if (!ProcessDateTimeSuffix(ref result, ref raw, ref dtok)) {
result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
return false;
}
dtok.suffix = TokenType.SEP_Unk; // Reset suffix to SEP_Unk;
}
if (dtok.dtt == DTT.NumLocalTimeMark) {
if (dps == DS.D_YNd || dps == DS.D_YN) {
return (ParseISO8601(ref raw, ref str, styles, ref result));
}
else {
result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
return false;
}
}
//
// Advance to the next state, and continue
//
dps = dateParsingStates[(int)dps][(int)dtok.dtt];
if (dps == DS.ERROR)
{
result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
return false;
}
else if (dps > DS.ERROR)
{
if ((dtfi.FormatFlags & DateTimeFormatFlags.UseHebrewRule) != 0) {
if (!ProcessHebrewTerminalState(dps, ref result, ref raw, dtfi)) {
return false;
}
} else {
if (!ProcessTerminaltState(dps, ref result, ref raw, dtfi)) {
return false;
}
}
reachTerminalState = true;
//
// If we have reached a terminal state, start over from DS.BEGIN again.
// For example, when we parsed "1999-12-23 13:30", we will reach a terminal state at "1999-12-23",
// and we start over so we can continue to parse "12:30".
//
dps = DS.BEGIN;
}
}
} while (dtok.dtt != DTT.End && dtok.dtt != DTT.NumEnd && dtok.dtt != DTT.MonthEnd);
if (!reachTerminalState) {
result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
return false;
}
AdjustTimeMark(dtfi, ref raw);
if (!AdjustHour(ref result.Hour, raw.timeMark)) {
result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
return false;
}
// Check if the parased string only contains hour/minute/second values.
bool bTimeOnly = (result.Year == -1 && result.Month == -1 && result.Day == -1);
//
// Check if any year/month/day is missing in the parsing string.
// If yes, get the default value from today's date.
//
CheckDefaultDateTime(ref result, ref result.calendar, styles);
if (!result.calendar.TryToDateTime(result.Year, result.Month, result.Day,
result.Hour, result.Minute, result.Second, 0, result.era, out time)) {
result.SetFailure(ParseFailureKind.FormatBadDateTimeCalendar, "Format_BadDateTimeCalendar", null);
return false;
}
if (raw.fraction > 0) {
time = time.AddTicks((long)Math.Round(raw.fraction * Calendar.TicksPerSecond));
}
//
// We have to check day of week before we adjust to the time zone.
// Otherwise, the value of day of week may change after adjustting to the time zone.
//
if (raw.dayOfWeek != -1) {
//
// Check if day of week is correct.
//
if (raw.dayOfWeek != (int)result.calendar.GetDayOfWeek(time)) {
result.SetFailure(ParseFailureKind.Format, "Format_BadDayOfWeek", null);
return false;
}
}
result.parsedDate = time;
if (!DetermineTimeZoneAdjustments(ref result, styles, bTimeOnly)) {
return false;
}
return true;
}
//
// This is the lexer. Check the character at the current index, and put the found token in dtok and
// some raw date/time information in raw.
//
private static void Lex(
int dps, __DTString str, DateTimeToken dtok, DateTimeRawInfo raw, DateTimeResult result, ref DateTimeFormatInfo dtfi) {
int sep;
dtok.dtt = DTT_Unk; // Assume the token is unkown.
//
// Skip any white spaces.
//
if (!str.SkipWhiteSpaceComma()) {
//
// SkipWhiteSpaceComma() will return true when end of string is reached.
//
dtok.dtt = DTT_End;
return;
}
char ch = str.GetChar();
if (Char.IsLetter(ch))
{
//
// This is a letter.
//
int month, dayOfWeek, era, timeMark;
//
// Check if this is a beginning of a month name.
// And check if this is a day of week name.
//
if (raw.month == -1 && (month = GetMonthNumber(str, dtfi)) >= 1)
{
//
// This is a month name
//
switch(sep=GetSeparator(str, raw, dtfi))
{
case SEP_End:
dtok.dtt = DTT_MonthEnd;
break;
case SEP_Space:
dtok.dtt = DTT_MonthSpace;
break;
case SEP_Date:
dtok.dtt = DTT_MonthDatesep;
break;
default:
//Invalid separator after month name
throw new FormatException(Environment.GetResourceString("Format_BadDateTime"));
}
raw.month = month;
}
else if (raw.dayOfWeek == -1 && (dayOfWeek = GetDayOfWeekNumber(str, dtfi)) >= 0)
{
//
// This is a day of week name.
//
raw.dayOfWeek = dayOfWeek;
dtok.dtt = DTT_DayOfWeek;
//
// Discard the separator.
//
GetSeparator(str, raw, dtfi);
}
else if (GetTimeZoneName(str))
{
//
// This is a timezone designator
//
// NOTENOTE : for now, we only support "GMT" and "Z" (for Zulu time).
//
dtok.dtt = DTT_TimeZone;
result.timeZoneUsed = true;
result.timeZoneOffset = new TimeSpan(0);
} else if ((raw.era == -1) && ((era = GetEra(str, result, ref dtfi)) != -1)) {
raw.era = era;
dtok.dtt = DTT_Era;
} else if (raw.timeMark == -1 && (timeMark = GetTimeMark(str, dtfi)) != -1) {
raw.timeMark = timeMark;
GetSeparator(str, raw, dtfi);
} else {
//
// Not a month name, not a day of week name. Check if this is one of the
// known date words. This is used to deal case like Spanish cultures, which
// uses 'de' in their Date string.
//
//
if (!str.MatchWords(dtfi.DateWords)) {
throw new FormatException(
String.Format(Environment.GetResourceString("Format_UnknowDateTimeWord"), str.Index));
}
GetSeparator(str, raw, dtfi);
}
} else if (Char.IsDigit(ch)) {
if (raw.numCount == 3) {
throw new FormatException(Environment.GetResourceString("Format_BadDateTime"));
}
//
// This is a digit.
//
int number = ch - '0';
int digitCount = 1;
//
// Collect other digits.
//
while (str.GetNextDigit())
{
number = number * 10 + str.GetDigit();
digitCount++;
}
// If the previous parsing state is DS_T_NNt (like 12:01), and we got another number,
// so we will have a terminal state DS_TX_NNN (like 12:01:02).
// If the previous parsing state is DS_T_Nt (like 12:), and we got another number,
// so we will have a terminal state DS_TX_NN (like 12:01:02).
//
// Look ahead to see if the following character is a decimal point or timezone offset.
// This enables us to parse time in the forms of:
// "11:22:33.1234" or "11:22:33-08".
if (dps == DS_T_NNt || dps == DS_T_Nt) {
char nextCh;
if ((str.Index < str.len - 1)) {
nextCh = str.Value[str.Index];
switch (nextCh) {
case '.':
if (dps == DS_T_NNt) {
// Yes, advance to the next character.
str.Index++;
// Collect the second fraction.
raw.fraction = ParseFraction(str);
}
break;
case '+':
case '-':
if (result.timeZoneUsed) {
// Should not have two timezone offsets.
throw new FormatException(Environment.GetResourceString("Format_BadDateTime"));
}
result.timeZoneUsed = true;
result.timeZoneOffset = ParseTimeZone(str, nextCh);
break;
}
}
}
if (number >= 0)
{
dtok.num = number;
if (digitCount >= 3)
{
if (raw.year == -1)
{
raw.year = number;
//
// If we have number which has 3 or more digits (like "001" or "0001"),
// we assume this number is a year. Save the currnet raw.numCount in
// raw.year.
//
switch (sep = GetSeparator(str, raw, dtfi))
{
case SEP_End:
dtok.dtt = DTT_YearEnd;
break;
case SEP_Am:
case SEP_Pm:
case SEP_Space:
dtok.dtt = DTT_YearSpace;
break;
case SEP_Date:
dtok.dtt = DTT_YearDateSep;
break;
case SEP_YearSuff:
case SEP_MonthSuff:
case SEP_DaySuff:
dtok.dtt = DTT_NumDatesuff;
dtok.suffix = sep;
break;
case SEP_HourSuff:
case SEP_MinuteSuff:
case SEP_SecondSuff:
dtok.dtt = DTT_NumTimesuff;
dtok.suffix = sep;
break;
default:
// Invalid separator after number number.
throw new FormatException(Environment.GetResourceString("Format_BadDateTime"));
}
//
// Found the token already. Let's bail.
//
return;
}
throw new FormatException(Environment.GetResourceString("Format_BadDateTime"));
}
} else
{
//
// number is overflowed.
//
throw new FormatException(Environment.GetResourceString("Format_BadDateTime"));
}
switch (sep = GetSeparator(str, raw, dtfi))
{
//
// Note here we check if the numCount is less than three.
// When we have more than three numbers, it will be caught as error in the state machine.
//
case SEP_End:
dtok.dtt = DTT_NumEnd;
raw.num[raw.numCount++] = dtok.num;
break;
case SEP_Am:
case SEP_Pm:
dtok.dtt = DTT_NumAmpm;
raw.num[raw.numCount++] = dtok.num;
break;
case SEP_Space:
dtok.dtt = DTT_NumSpace;
raw.num[raw.numCount++] = dtok.num;
break;
case SEP_Date:
dtok.dtt = DTT_NumDatesep;
raw.num[raw.numCount++] = dtok.num;
break;
case SEP_Time:
if (!result.timeZoneUsed) {
dtok.dtt = DTT_NumTimesep;
raw.num[raw.numCount++] = dtok.num;
} else {
// If we already got timezone, there should be no
// time separator again.
throw new FormatException(Environment.GetResourceString("Format_BadDateTime"));
}
break;
case SEP_YearSuff:
dtok.num = dtfi.Calendar.ToFourDigitYear(number);
dtok.dtt = DTT_NumDatesuff;
dtok.suffix = sep;
break;
case SEP_MonthSuff:
case SEP_DaySuff:
dtok.dtt = DTT_NumDatesuff;
dtok.suffix = sep;
break;
case SEP_HourSuff:
case SEP_MinuteSuff:
case SEP_SecondSuff:
dtok.dtt = DTT_NumTimesuff;
dtok.suffix = sep;
break;
case SEP_LocalTimeMark:
dtok.dtt = DTT_NumLocalTimeMark;
raw.num[raw.numCount++] = dtok.num;
break;
default:
// Invalid separator after number number.
throw new FormatException(Environment.GetResourceString("Format_BadDateTime"));
}
}
else
{
//
// Not a letter, not a digit. Just ignore it.
//
str.Index++;
}
return;
}
//
// This is the real method to do the parsing work.
//
internal static DateTime Parse(String s, DateTimeFormatInfo dtfi, DateTimeStyles styles) {
if (s == null) {
throw new ArgumentNullException("s",
Environment.GetResourceString("ArgumentNull_String"));
}
if (s.Length == 0) {
throw new FormatException(Environment.GetResourceString("Format_BadDateTime"));
}
if (dtfi == null) {
dtfi = DateTimeFormatInfo.CurrentInfo;
}
DateTime time;
//
// First try the predefined format.
//
int dps = DS_BEGIN; // Date Parsing State.
bool reachTerminalState = false;
DateTimeResult result = new DateTimeResult(); // The buffer to store the parsing result.
DateTimeToken dtok = new DateTimeToken(); // The buffer to store the parsing token.
DateTimeRawInfo raw = new DateTimeRawInfo(); // The buffer to store temporary parsing information.
result.calendar = dtfi.Calendar;
//
// The string to be parsed. Use a __DTString wrapper so that we can trace the index which
// indicates the begining of next token.
//
__DTString str = new __DTString(s);
str.GetNext();
//
// The following loop will break out when we reach the end of the str.
//
do {
//
// Call the lexer to get the next token.
//
// If we find a era in Lex(), the era value will be in raw.era.
Lex(dps, str, dtok, raw, result, ref dtfi);
//
// If the token is not unknown, process it.
// Otherwise, just discard it.
//
if (dtok.dtt != DTT_Unk)
{
//
// Check if we got any CJK Date/Time suffix.
// Since the Date/Time suffix tells us the number belongs to year/month/day/hour/minute/second,
// store the number in the appropriate field in the result.
//
if (dtok.suffix != SEP_Unk)
{
ProcessDateTimeSuffix(result, raw, dtok);
dtok.suffix = SEP_Unk; // Reset suffix to SEP_Unk;
}
if (dps == DS_D_YN && dtok.dtt == DTT_NumLocalTimeMark) {
// Consider this as ISO 8601 format:
// "yyyy-MM-dd'T'HH:mm:ss" 1999-10-31T02:00:00
return (ParseISO8601(raw, str, styles));
}
//
// Advance to the next state, and continue
//
dps = dateParsingStates[dps][dtok.dtt];
if (dps == DS_ERROR)
{
BCLDebug.Trace("NLS", "DateTimeParse.DoParse(): dps is DS_ERROR");
throw new FormatException(Environment.GetResourceString("Format_BadDateTime"));
}
else if (dps > DS_ERROR)
{
ProcessTerminaltState(dps, result, raw, dtfi);
reachTerminalState = true;
//
// If we have reached a terminal state, start over from DS_BEGIN again.
// For example, when we parsed "1999-12-23 13:30", we will reach a terminal state at "1999-12-23",
// and we start over so we can continue to parse "12:30".
//
dps = DS_BEGIN;
}
}
} while (dtok.dtt != DTT_End && dtok.dtt != DTT_NumEnd && dtok.dtt != DTT_MonthEnd);
if (!reachTerminalState) {
BCLDebug.Trace("NLS", "DateTimeParse.DoParse(): terminal state is not reached");
throw new FormatException(Environment.GetResourceString("Format_BadDateTime"));
}
// Check if the parased string only contains hour/minute/second values.
bool bTimeOnly = (result.Year == -1 && result.Month == -1 && result.Day == -1);
//
// Check if any year/month/day is missing in the parsing string.
// If yes, get the default value from today's date.
//
CheckDefaultDateTime(result, ref result.calendar, styles);
try {
if (raw.era == -1) {
raw.era = Calendar.CurrentEra;
}
time = result.calendar.ToDateTime(result.Year, result.Month, result.Day,
result.Hour, result.Minute, result.Second, 0, raw.era);
if (raw.fraction > 0) {
time = time.AddTicks((long)Math.Round(raw.fraction * Calendar.TicksPerSecond));
}
} catch (Exception)
{
BCLDebug.Trace("NLS", "DateTimeParse.DoParse(): time is bad");
throw new FormatException(Environment.GetResourceString("Format_BadDateTime"));
}
//
// NOTENOTE :
// We have to check day of week before we adjust to the time zone.
// Otherwise, the value of day of week may change after adjustting to the time zone.
//
if (raw.dayOfWeek != -1) {
//
// Check if day of week is correct.
//
if (raw.dayOfWeek != (int)result.calendar.GetDayOfWeek(time)) {
BCLDebug.Trace("NLS", "DateTimeParse.DoParse(): day of week is not correct");
throw new FormatException(Environment.GetResourceString("Format_BadDayOfWeek"));
}
}
if (result.timeZoneUsed) {
time = AdjustTimeZone(time, result.timeZoneOffset, styles, bTimeOnly);
}
return (time);
}
//
// A date suffix is found, use this method to put the number into the result.
//
private static void ProcessDateTimeSuffix(DateTimeResult result, DateTimeRawInfo raw, DateTimeToken dtok)
{
switch (dtok.suffix)
{
case SEP_YearSuff:
result.Year = raw.year = dtok.num;
break;
case SEP_MonthSuff:
result.Month= raw.month = dtok.num;
break;
case SEP_DaySuff:
result.Day = dtok.num;
break;
case SEP_HourSuff:
result.Hour = dtok.num;
break;
case SEP_MinuteSuff:
result.Minute = dtok.num;
break;
case SEP_SecondSuff:
result.Second = dtok.num;
break;
}
}
