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diff --git a/src/mscorlib/shared/System/Globalization/DateTimeParse.cs b/src/mscorlib/shared/System/Globalization/DateTimeParse.cs
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+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using System.Diagnostics;
+using System.Diagnostics.Contracts;
+using System.Globalization;
+using System.Text;
+
+namespace System
+{
+ internal static class DateTimeParse
+ {
+ internal const Int32 MaxDateTimeNumberDigits = 8;
+
+ internal delegate bool MatchNumberDelegate(ref __DTString str, int digitLen, out int result);
+
+ internal static MatchNumberDelegate m_hebrewNumberParser = new MatchNumberDelegate(DateTimeParse.MatchHebrewDigits);
+
+ internal static DateTime ParseExact(String s, String format, DateTimeFormatInfo dtfi, DateTimeStyles style)
+ {
+ DateTimeResult result = new DateTimeResult(); // The buffer to store the parsing result.
+ result.Init();
+ if (TryParseExact(s, format, dtfi, style, ref result))
+ {
+ return result.parsedDate;
+ }
+ else
+ {
+ throw GetDateTimeParseException(ref result);
+ }
+ }
+
+ internal static DateTime ParseExact(String s, String format, DateTimeFormatInfo dtfi, DateTimeStyles style, out TimeSpan offset)
+ {
+ DateTimeResult result = new DateTimeResult(); // The buffer to store the parsing result.
+ offset = TimeSpan.Zero;
+ result.Init();
+ result.flags |= ParseFlags.CaptureOffset;
+ if (TryParseExact(s, format, dtfi, style, ref result))
+ {
+ offset = result.timeZoneOffset;
+ return result.parsedDate;
+ }
+ else
+ {
+ throw GetDateTimeParseException(ref result);
+ }
+ }
+
+ internal static bool TryParseExact(String s, String format, DateTimeFormatInfo dtfi, DateTimeStyles style, out DateTime result)
+ {
+ result = DateTime.MinValue;
+ DateTimeResult resultData = new DateTimeResult(); // The buffer to store the parsing result.
+ resultData.Init();
+ if (TryParseExact(s, format, dtfi, style, ref resultData))
+ {
+ result = resultData.parsedDate;
+ return true;
+ }
+ return false;
+ }
+
+ internal static bool TryParseExact(String s, String format, DateTimeFormatInfo dtfi, DateTimeStyles style, out DateTime result, out TimeSpan offset)
+ {
+ result = DateTime.MinValue;
+ offset = TimeSpan.Zero;
+ DateTimeResult resultData = new DateTimeResult(); // The buffer to store the parsing result.
+ resultData.Init();
+ resultData.flags |= ParseFlags.CaptureOffset;
+ if (TryParseExact(s, format, dtfi, style, ref resultData))
+ {
+ result = resultData.parsedDate;
+ offset = resultData.timeZoneOffset;
+ return true;
+ }
+ return false;
+ }
+
+ internal static bool TryParseExact(String s, String format, DateTimeFormatInfo dtfi, DateTimeStyles style, ref DateTimeResult result)
+ {
+ if (s == null)
+ {
+ result.SetFailure(ParseFailureKind.ArgumentNull, "ArgumentNull_String", null, nameof(s));
+ return false;
+ }
+ if (format == null)
+ {
+ result.SetFailure(ParseFailureKind.ArgumentNull, "ArgumentNull_String", null, nameof(format));
+ return false;
+ }
+ if (s.Length == 0)
+ {
+ result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
+ return false;
+ }
+
+ if (format.Length == 0)
+ {
+ result.SetFailure(ParseFailureKind.Format, "Format_BadFormatSpecifier", null);
+ return false;
+ }
+
+ Debug.Assert(dtfi != null, "dtfi == null");
+
+ return DoStrictParse(s, format, style, dtfi, ref result);
+ }
+
+ internal static DateTime ParseExactMultiple(String s, String[] formats,
+ DateTimeFormatInfo dtfi, DateTimeStyles style)
+ {
+ DateTimeResult result = new DateTimeResult(); // The buffer to store the parsing result.
+ result.Init();
+ if (TryParseExactMultiple(s, formats, dtfi, style, ref result))
+ {
+ return result.parsedDate;
+ }
+ else
+ {
+ throw GetDateTimeParseException(ref result);
+ }
+ }
+
+
+ internal static DateTime ParseExactMultiple(String s, String[] formats,
+ DateTimeFormatInfo dtfi, DateTimeStyles style, out TimeSpan offset)
+ {
+ DateTimeResult result = new DateTimeResult(); // The buffer to store the parsing result.
+ offset = TimeSpan.Zero;
+ result.Init();
+ result.flags |= ParseFlags.CaptureOffset;
+ if (TryParseExactMultiple(s, formats, dtfi, style, ref result))
+ {
+ offset = result.timeZoneOffset;
+ return result.parsedDate;
+ }
+ else
+ {
+ throw GetDateTimeParseException(ref result);
+ }
+ }
+
+ internal static bool TryParseExactMultiple(String s, String[] formats,
+ DateTimeFormatInfo dtfi, DateTimeStyles style, out DateTime result, out TimeSpan offset)
+ {
+ result = DateTime.MinValue;
+ offset = TimeSpan.Zero;
+ DateTimeResult resultData = new DateTimeResult(); // The buffer to store the parsing result.
+ resultData.Init();
+ resultData.flags |= ParseFlags.CaptureOffset;
+ if (TryParseExactMultiple(s, formats, dtfi, style, ref resultData))
+ {
+ result = resultData.parsedDate;
+ offset = resultData.timeZoneOffset;
+ return true;
+ }
+ return false;
+ }
+
+
+ internal static bool TryParseExactMultiple(String s, String[] formats,
+ DateTimeFormatInfo dtfi, DateTimeStyles style, out DateTime result)
+ {
+ result = DateTime.MinValue;
+ DateTimeResult resultData = new DateTimeResult(); // The buffer to store the parsing result.
+ resultData.Init();
+ if (TryParseExactMultiple(s, formats, dtfi, style, ref resultData))
+ {
+ result = resultData.parsedDate;
+ return true;
+ }
+ return false;
+ }
+
+ internal static bool TryParseExactMultiple(String s, String[] formats,
+ DateTimeFormatInfo dtfi, DateTimeStyles style, ref DateTimeResult result)
+ {
+ if (s == null)
+ {
+ result.SetFailure(ParseFailureKind.ArgumentNull, "ArgumentNull_String", null, nameof(s));
+ return false;
+ }
+ if (formats == null)
+ {
+ result.SetFailure(ParseFailureKind.ArgumentNull, "ArgumentNull_String", null, nameof(formats));
+ return false;
+ }
+
+ if (s.Length == 0)
+ {
+ result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
+ return false;
+ }
+
+ if (formats.Length == 0)
+ {
+ result.SetFailure(ParseFailureKind.Format, "Format_BadFormatSpecifier", null);
+ return false;
+ }
+
+ Debug.Assert(dtfi != null, "dtfi == null");
+
+ //
+ // Do a loop through the provided formats and see if we can parse succesfully in
+ // one of the formats.
+ //
+ for (int i = 0; i < formats.Length; i++)
+ {
+ if (formats[i] == null || formats[i].Length == 0)
+ {
+ result.SetFailure(ParseFailureKind.Format, "Format_BadFormatSpecifier", null);
+ return false;
+ }
+ // Create a new result each time to ensure the runs are independent. Carry through
+ // flags from the caller and return the result.
+ DateTimeResult innerResult = new DateTimeResult(); // The buffer to store the parsing result.
+ innerResult.Init();
+ innerResult.flags = result.flags;
+ if (TryParseExact(s, formats[i], dtfi, style, ref innerResult))
+ {
+ result.parsedDate = innerResult.parsedDate;
+ result.timeZoneOffset = innerResult.timeZoneOffset;
+ return (true);
+ }
+ }
+ result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
+ return (false);
+ }
+
+ ////////////////////////////////////////////////////////////////////////////
+ // Date Token Types
+ //
+ // Following is the set of tokens that can be generated from a date
+ // string. Notice that the legal set of trailing separators have been
+ // folded in with the date number, and month name tokens. This set
+ // of tokens is chosen to reduce the number of date parse states.
+ //
+ ////////////////////////////////////////////////////////////////////////////
+
+ internal enum DTT : int
+ {
+ End = 0, // '\0'
+ NumEnd = 1, // Num[ ]*[\0]
+ NumAmpm = 2, // Num[ ]+AmPm
+ NumSpace = 3, // Num[ ]+^[Dsep|Tsep|'0\']
+ NumDatesep = 4, // Num[ ]*Dsep
+ NumTimesep = 5, // Num[ ]*Tsep
+ MonthEnd = 6, // Month[ ]*'\0'
+ MonthSpace = 7, // Month[ ]+^[Dsep|Tsep|'\0']
+ MonthDatesep = 8, // Month[ ]*Dsep
+ NumDatesuff = 9, // Month[ ]*DSuff
+ NumTimesuff = 10, // Month[ ]*TSuff
+ DayOfWeek = 11, // Day of week name
+ YearSpace = 12, // Year+^[Dsep|Tsep|'0\']
+ YearDateSep = 13, // Year+Dsep
+ YearEnd = 14, // Year+['\0']
+ TimeZone = 15, // timezone name
+ Era = 16, // era name
+ NumUTCTimeMark = 17, // Num + 'Z'
+ // When you add a new token which will be in the
+ // state table, add it after NumLocalTimeMark.
+ Unk = 18, // unknown
+ NumLocalTimeMark = 19, // Num + 'T'
+ Max = 20, // marker
+ }
+
+ internal enum TM
+ {
+ NotSet = -1,
+ AM = 0,
+ PM = 1,
+ }
+
+
+ ////////////////////////////////////////////////////////////////////////////
+ //
+ // DateTime parsing state enumeration (DS.*)
+ //
+ ////////////////////////////////////////////////////////////////////////////
+
+ internal enum DS
+ {
+ BEGIN = 0,
+ N = 1, // have one number
+ NN = 2, // have two numbers
+
+ // The following are known to be part of a date
+
+ D_Nd = 3, // date string: have number followed by date separator
+ D_NN = 4, // date string: have two numbers
+ D_NNd = 5, // date string: have two numbers followed by date separator
+
+ D_M = 6, // date string: have a month
+ D_MN = 7, // date string: have a month and a number
+ D_NM = 8, // date string: have a number and a month
+ D_MNd = 9, // date string: have a month and number followed by date separator
+ D_NDS = 10, // date string: have one number followed a date suffix.
+
+ D_Y = 11, // date string: have a year.
+ D_YN = 12, // date string: have a year and a number
+ D_YNd = 13, // date string: have a year and a number and a date separator
+ D_YM = 14, // date string: have a year and a month
+ D_YMd = 15, // date string: have a year and a month and a date separator
+ D_S = 16, // have numbers followed by a date suffix.
+ T_S = 17, // have numbers followed by a time suffix.
+
+ // The following are known to be part of a time
+
+ T_Nt = 18, // have num followed by time separator
+ T_NNt = 19, // have two numbers followed by time separator
+
+
+ ERROR = 20,
+
+ // The following are terminal states. These all have an action
+ // associated with them; and transition back to BEGIN.
+
+ DX_NN = 21, // day from two numbers
+ DX_NNN = 22, // day from three numbers
+ DX_MN = 23, // day from month and one number
+ DX_NM = 24, // day from month and one number
+ DX_MNN = 25, // day from month and two numbers
+ DX_DS = 26, // a set of date suffixed numbers.
+ DX_DSN = 27, // day from date suffixes and one number.
+ DX_NDS = 28, // day from one number and date suffixes .
+ DX_NNDS = 29, // day from one number and date suffixes .
+
+ DX_YNN = 30, // date string: have a year and two number
+ DX_YMN = 31, // date string: have a year, a month, and a number.
+ DX_YN = 32, // date string: have a year and one number
+ DX_YM = 33, // date string: have a year, a month.
+ TX_N = 34, // time from one number (must have ampm)
+ TX_NN = 35, // time from two numbers
+ TX_NNN = 36, // time from three numbers
+ TX_TS = 37, // a set of time suffixed numbers.
+ DX_NNY = 38,
+ }
+
+ ////////////////////////////////////////////////////////////////////////////
+ //
+ // NOTE: The following state machine table is dependent on the order of the
+ // DS and DTT enumerations.
+ //
+ // For each non terminal state, the following table defines the next state
+ // for each given date token type.
+ //
+ ////////////////////////////////////////////////////////////////////////////
+
+ // End NumEnd NumAmPm NumSpace NumDaySep NumTimesep MonthEnd MonthSpace MonthDSep NumDateSuff NumTimeSuff DayOfWeek YearSpace YearDateSep YearEnd TimeZone Era UTCTimeMark
+ private static DS[][] dateParsingStates = {
+// DS.BEGIN // DS.BEGIN
+new DS[] { DS.BEGIN, DS.ERROR, DS.TX_N, DS.N, DS.D_Nd, DS.T_Nt, DS.ERROR, DS.D_M, DS.D_M, DS.D_S, DS.T_S, DS.BEGIN, DS.D_Y, DS.D_Y, DS.ERROR, DS.BEGIN, DS.BEGIN, DS.ERROR},
+
+// DS.N // DS.N
+new DS[] { DS.ERROR, DS.DX_NN, DS.ERROR, DS.NN, DS.D_NNd, DS.ERROR, DS.DX_NM, DS.D_NM, DS.D_MNd, DS.D_NDS, DS.ERROR, DS.N, DS.D_YN, DS.D_YNd, DS.DX_YN, DS.N, DS.N, DS.ERROR},
+
+// DS.NN // DS.NN
+new DS[] { DS.DX_NN, DS.DX_NNN, DS.TX_N, DS.DX_NNN, DS.ERROR, DS.T_Nt, DS.DX_MNN, DS.DX_MNN, DS.ERROR, DS.ERROR, DS.T_S, DS.NN, DS.DX_NNY, DS.ERROR, DS.DX_NNY, DS.NN, DS.NN, DS.ERROR},
+
+// DS.D_Nd // DS.D_Nd
+new DS[] { DS.ERROR, DS.DX_NN, DS.ERROR, DS.D_NN, DS.D_NNd, DS.ERROR, DS.DX_NM, DS.D_MN, DS.D_MNd, DS.ERROR, DS.ERROR, DS.D_Nd, DS.D_YN, DS.D_YNd, DS.DX_YN, DS.ERROR, DS.D_Nd, DS.ERROR},
+
+// DS.D_NN // DS.D_NN
+new DS[] { DS.DX_NN, DS.DX_NNN, DS.TX_N, DS.DX_NNN, DS.ERROR, DS.T_Nt, DS.DX_MNN, DS.DX_MNN, DS.ERROR, DS.DX_DS, DS.T_S, DS.D_NN, DS.DX_NNY, DS.ERROR, DS.DX_NNY, DS.ERROR, DS.D_NN, DS.ERROR},
+
+// DS.D_NNd // DS.D_NNd
+new DS[] { DS.ERROR, DS.DX_NNN, DS.DX_NNN, DS.DX_NNN, DS.ERROR, DS.ERROR, DS.DX_MNN, DS.DX_MNN, DS.ERROR, DS.DX_DS, DS.ERROR, DS.D_NNd, DS.DX_NNY, DS.ERROR, DS.DX_NNY, DS.ERROR, DS.D_NNd, DS.ERROR},
+
+// DS.D_M // DS.D_M
+new DS[] { DS.ERROR, DS.DX_MN, DS.ERROR, DS.D_MN, DS.D_MNd, DS.ERROR, DS.ERROR, DS.ERROR, DS.ERROR, DS.ERROR, DS.ERROR, DS.D_M, DS.D_YM, DS.D_YMd, DS.DX_YM, DS.ERROR, DS.D_M, DS.ERROR},
+
+// DS.D_MN // DS.D_MN
+new DS[] { DS.DX_MN, DS.DX_MNN, DS.DX_MNN, DS.DX_MNN, DS.ERROR, DS.T_Nt, DS.ERROR, DS.ERROR, DS.ERROR, DS.DX_DS, DS.T_S, DS.D_MN, DS.DX_YMN, DS.ERROR, DS.DX_YMN, DS.ERROR, DS.D_MN, DS.ERROR},
+
+// DS.D_NM // DS.D_NM
+new DS[] { DS.DX_NM, DS.DX_MNN, DS.DX_MNN, DS.DX_MNN, DS.ERROR, DS.T_Nt, DS.ERROR, DS.ERROR, DS.ERROR, DS.DX_DS, DS.T_S, DS.D_NM, DS.DX_YMN, DS.ERROR, DS.DX_YMN, DS.ERROR, DS.D_NM, DS.ERROR},
+
+// DS.D_MNd // DS.D_MNd
+new DS[] { DS.ERROR, DS.DX_MNN, DS.ERROR, DS.DX_MNN, DS.ERROR, DS.ERROR, DS.ERROR, DS.ERROR, DS.ERROR, DS.ERROR, DS.ERROR, DS.D_MNd, DS.DX_YMN, DS.ERROR, DS.DX_YMN, DS.ERROR, DS.D_MNd, DS.ERROR},
+
+// DS.D_NDS, // DS.D_NDS,
+new DS[] { DS.DX_NDS,DS.DX_NNDS, DS.DX_NNDS, DS.DX_NNDS, DS.ERROR, DS.T_Nt, DS.ERROR, DS.ERROR, DS.ERROR, DS.D_NDS, DS.T_S, DS.D_NDS, DS.ERROR, DS.ERROR, DS.ERROR, DS.ERROR, DS.D_NDS, DS.ERROR},
+
+// DS.D_Y // DS.D_Y
+new DS[] { DS.ERROR, DS.DX_YN, DS.ERROR, DS.D_YN, DS.D_YNd, DS.ERROR, DS.DX_YM, DS.D_YM, DS.D_YMd, DS.D_YM, DS.ERROR, DS.D_Y, DS.ERROR, DS.ERROR, DS.ERROR, DS.ERROR, DS.D_Y, DS.ERROR},
+
+// DS.D_YN // DS.D_YN
+new DS[] { DS.DX_YN, DS.DX_YNN, DS.DX_YNN, DS.DX_YNN, DS.ERROR, DS.ERROR, DS.DX_YMN, DS.DX_YMN, DS.ERROR, DS.ERROR, DS.ERROR, DS.D_YN, DS.ERROR, DS.ERROR, DS.ERROR, DS.ERROR, DS.D_YN, DS.ERROR},
+
+// DS.D_YNd // DS.D_YNd
+new DS[] { DS.ERROR, DS.DX_YNN, DS.DX_YNN, DS.DX_YNN, DS.ERROR, DS.ERROR, DS.DX_YMN, DS.DX_YMN, DS.ERROR, DS.ERROR, DS.ERROR, DS.D_YN, DS.ERROR, DS.ERROR, DS.ERROR, DS.ERROR, DS.D_YN, DS.ERROR},
+
+// DS.D_YM // DS.D_YM
+new DS[] { DS.DX_YM, DS.DX_YMN, DS.DX_YMN, DS.DX_YMN, DS.ERROR, DS.ERROR, DS.ERROR, DS.ERROR, DS.ERROR, DS.ERROR, DS.ERROR, DS.D_YM, DS.ERROR, DS.ERROR, DS.ERROR, DS.ERROR, DS.D_YM, DS.ERROR},
+
+// DS.D_YMd // DS.D_YMd
+new DS[] { DS.ERROR, DS.DX_YMN, DS.DX_YMN, DS.DX_YMN, DS.ERROR, DS.ERROR, DS.ERROR, DS.ERROR, DS.ERROR, DS.ERROR, DS.ERROR, DS.D_YM, DS.ERROR, DS.ERROR, DS.ERROR, DS.ERROR, DS.D_YM, DS.ERROR},
+
+// DS.D_S // DS.D_S
+new DS[] { DS.DX_DS, DS.DX_DSN, DS.TX_N, DS.T_Nt, DS.ERROR, DS.T_Nt, DS.ERROR, DS.ERROR, DS.ERROR, DS.D_S, DS.T_S, DS.D_S, DS.ERROR, DS.ERROR, DS.ERROR, DS.ERROR, DS.D_S, DS.ERROR},
+
+// DS.T_S // DS.T_S
+new DS[] { DS.TX_TS, DS.TX_TS, DS.TX_TS, DS.T_Nt, DS.D_Nd, DS.ERROR, DS.ERROR, DS.ERROR, DS.ERROR, DS.D_S, DS.T_S, DS.T_S, DS.ERROR, DS.ERROR, DS.ERROR, DS.T_S, DS.T_S, DS.ERROR},
+
+// DS.T_Nt // DS.T_Nt
+new DS[] { DS.ERROR, DS.TX_NN, DS.TX_NN, DS.TX_NN, DS.ERROR, DS.T_NNt, DS.DX_NM, DS.D_NM, DS.ERROR, DS.ERROR, DS.T_S, DS.ERROR, DS.ERROR, DS.ERROR, DS.ERROR, DS.T_Nt, DS.T_Nt, DS.TX_NN},
+
+// DS.T_NNt // DS.T_NNt
+new DS[] { DS.ERROR, DS.TX_NNN, DS.TX_NNN, DS.TX_NNN, DS.ERROR, DS.ERROR, DS.ERROR, DS.ERROR, DS.ERROR, DS.ERROR, DS.T_S, DS.T_NNt, DS.ERROR, DS.ERROR, DS.ERROR, DS.T_NNt, DS.T_NNt, DS.TX_NNN},
+};
+ // End NumEnd NumAmPm NumSpace NumDaySep NumTimesep MonthEnd MonthSpace MonthDSep NumDateSuff NumTimeSuff DayOfWeek YearSpace YearDateSep YearEnd TimeZone Era UTCMark
+
+ internal const String GMTName = "GMT";
+ internal const String ZuluName = "Z";
+
+ //
+ // Search from the index of str at str.Index to see if the target string exists in the str.
+ //
+ private static bool MatchWord(ref __DTString str, String target)
+ {
+ int length = target.Length;
+ if (length > (str.Value.Length - str.Index))
+ {
+ return false;
+ }
+
+ if (str.CompareInfo.Compare(str.Value, str.Index, length,
+ target, 0, length, CompareOptions.IgnoreCase) != 0)
+ {
+ return (false);
+ }
+
+ int nextCharIndex = str.Index + target.Length;
+
+ if (nextCharIndex < str.Value.Length)
+ {
+ char nextCh = str.Value[nextCharIndex];
+ if (Char.IsLetter(nextCh))
+ {
+ return (false);
+ }
+ }
+ str.Index = nextCharIndex;
+ if (str.Index < str.len)
+ {
+ str.m_current = str.Value[str.Index];
+ }
+
+ return (true);
+ }
+
+
+ //
+ // Check the word at the current index to see if it matches GMT name or Zulu name.
+ //
+ private static bool GetTimeZoneName(ref __DTString str)
+ {
+ if (MatchWord(ref str, GMTName))
+ {
+ return (true);
+ }
+
+ if (MatchWord(ref str, ZuluName))
+ {
+ return (true);
+ }
+
+ return (false);
+ }
+
+ internal static bool IsDigit(char ch)
+ {
+ return (ch >= '0' && ch <= '9');
+ }
+
+
+ /*=================================ParseFraction==========================
+ **Action: Starting at the str.Index, which should be a decimal symbol.
+ ** if the current character is a digit, parse the remaining
+ ** numbers as fraction. For example, if the sub-string starting at str.Index is "123", then
+ ** the method will return 0.123
+ **Returns: The fraction number.
+ **Arguments:
+ ** str the parsing string
+ **Exceptions:
+ ============================================================================*/
+
+ private static bool ParseFraction(ref __DTString str, out double result)
+ {
+ result = 0;
+ double decimalBase = 0.1;
+ int digits = 0;
+ char ch;
+ while (str.GetNext()
+ && IsDigit(ch = str.m_current))
+ {
+ result += (ch - '0') * decimalBase;
+ decimalBase *= 0.1;
+ digits++;
+ }
+ return (digits > 0);
+ }
+
+ /*=================================ParseTimeZone==========================
+ **Action: Parse the timezone offset in the following format:
+ ** "+8", "+08", "+0800", "+0800"
+ ** This method is used by DateTime.Parse().
+ **Returns: The TimeZone offset.
+ **Arguments:
+ ** str the parsing string
+ **Exceptions:
+ ** FormatException if invalid timezone format is found.
+ ============================================================================*/
+
+ private static bool ParseTimeZone(ref __DTString str, ref TimeSpan result)
+ {
+ // The hour/minute offset for timezone.
+ int hourOffset = 0;
+ int minuteOffset = 0;
+ DTSubString sub;
+
+ // Consume the +/- character that has already been read
+ sub = str.GetSubString();
+ if (sub.length != 1)
+ {
+ return false;
+ }
+ char offsetChar = sub[0];
+ if (offsetChar != '+' && offsetChar != '-')
+ {
+ return false;
+ }
+ str.ConsumeSubString(sub);
+
+ sub = str.GetSubString();
+ if (sub.type != DTSubStringType.Number)
+ {
+ return false;
+ }
+ int value = sub.value;
+ int length = sub.length;
+ if (length == 1 || length == 2)
+ {
+ // Parsing "+8" or "+08"
+ hourOffset = value;
+ str.ConsumeSubString(sub);
+ // See if we have minutes
+ sub = str.GetSubString();
+ if (sub.length == 1 && sub[0] == ':')
+ {
+ // Parsing "+8:00" or "+08:00"
+ str.ConsumeSubString(sub);
+ sub = str.GetSubString();
+ if (sub.type != DTSubStringType.Number || sub.length < 1 || sub.length > 2)
+ {
+ return false;
+ }
+ minuteOffset = sub.value;
+ str.ConsumeSubString(sub);
+ }
+ }
+ else if (length == 3 || length == 4)
+ {
+ // Parsing "+800" or "+0800"
+ hourOffset = value / 100;
+ minuteOffset = value % 100;
+ str.ConsumeSubString(sub);
+ }
+ else
+ {
+ // Wrong number of digits
+ return false;
+ }
+ Debug.Assert(hourOffset >= 0 && hourOffset <= 99, "hourOffset >= 0 && hourOffset <= 99");
+ Debug.Assert(minuteOffset >= 0 && minuteOffset <= 99, "minuteOffset >= 0 && minuteOffset <= 99");
+ if (minuteOffset < 0 || minuteOffset >= 60)
+ {
+ return false;
+ }
+
+ result = new TimeSpan(hourOffset, minuteOffset, 0);
+ if (offsetChar == '-')
+ {
+ result = result.Negate();
+ }
+ return true;
+ }
+
+ // This is the helper function to handle timezone in string in the format like +/-0800
+ private static bool HandleTimeZone(ref __DTString str, ref DateTimeResult result)
+ {
+ 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;
+ }
+ }
+ }
+ 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);
+
+#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 (!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 ((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 Boolean VerifyValidPunctuation(ref __DTString str)
+ {
+ // Compatability Behavior. Allow trailing nulls and surrounding hashes
+ Char ch = str.Value[str.Index];
+ if (ch == '#')
+ {
+ bool foundStart = false;
+ bool foundEnd = false;
+ for (int i = 0; i < str.len; i++)
+ {
+ ch = str.Value[i];
+ if (ch == '#')
+ {
+ if (foundStart)
+ {
+ if (foundEnd)
+ {
+ // Having more than two hashes is invalid
+ return false;
+ }
+ else
+ {
+ foundEnd = true;
+ }
+ }
+ else
+ {
+ foundStart = true;
+ }
+ }
+ else if (ch == '\0')
+ {
+ // Allow nulls only at the end
+ if (!foundEnd)
+ {
+ return false;
+ }
+ }
+ else if ((!Char.IsWhiteSpace(ch)))
+ {
+ // Anthyhing other than whitespace outside hashes is invalid
+ if (!foundStart || foundEnd)
+ {
+ return false;
+ }
+ }
+ }
+ if (!foundEnd)
+ {
+ // The has was un-paired
+ return false;
+ }
+ // Valid Hash usage: eat the hash and continue.
+ str.GetNext();
+ return true;
+ }
+ else if (ch == '\0')
+ {
+ for (int i = str.Index; i < str.len; i++)
+ {
+ if (str.Value[i] != '\0')
+ {
+ // Nulls are only valid if they are the only trailing character
+ return false;
+ }
+ }
+ // Move to the end of the string
+ str.Index = str.len;
+ return true;
+ }
+ return false;
+ }
+
+ private const int ORDER_YMD = 0; // The order of date is Year/Month/Day.
+ private const int ORDER_MDY = 1; // The order of date is Month/Day/Year.
+ private const int ORDER_DMY = 2; // The order of date is Day/Month/Year.
+ private const int ORDER_YDM = 3; // The order of date is Year/Day/Month
+ private const int ORDER_YM = 4; // Year/Month order.
+ private const int ORDER_MY = 5; // Month/Year order.
+ private const int ORDER_MD = 6; // Month/Day order.
+ private const int ORDER_DM = 7; // Day/Month order.
+
+ //
+ // Decide the year/month/day order from the datePattern.
+ //
+ // Return 0 for YMD, 1 for MDY, 2 for DMY, otherwise -1.
+ //
+ private static Boolean GetYearMonthDayOrder(String datePattern, DateTimeFormatInfo dtfi, out int order)
+ {
+ int yearOrder = -1;
+ int monthOrder = -1;
+ int dayOrder = -1;
+ int orderCount = 0;
+
+ bool inQuote = false;
+
+ for (int i = 0; i < datePattern.Length && orderCount < 3; i++)
+ {
+ char ch = datePattern[i];
+ if (ch == '\\' || ch == '%')
+ {
+ i++;
+ continue; // Skip next character that is escaped by this backslash
+ }
+
+ if (ch == '\'' || ch == '"')
+ {
+ inQuote = !inQuote;
+ }
+
+ if (!inQuote)
+ {
+ if (ch == 'y')
+ {
+ yearOrder = orderCount++;
+
+ //
+ // Skip all year pattern charaters.
+ //
+ for (; i + 1 < datePattern.Length && datePattern[i + 1] == 'y'; i++)
+ {
+ // Do nothing here.
+ }
+ }
+ else if (ch == 'M')
+ {
+ monthOrder = orderCount++;
+ //
+ // Skip all month pattern characters.
+ //
+ for (; i + 1 < datePattern.Length && datePattern[i + 1] == 'M'; i++)
+ {
+ // Do nothing here.
+ }
+ }
+ else if (ch == 'd')
+ {
+ int patternCount = 1;
+ //
+ // Skip all day pattern characters.
+ //
+ for (; i + 1 < datePattern.Length && datePattern[i + 1] == 'd'; i++)
+ {
+ patternCount++;
+ }
+ //
+ // Make sure this is not "ddd" or "dddd", which means day of week.
+ //
+ if (patternCount <= 2)
+ {
+ dayOrder = orderCount++;
+ }
+ }
+ }
+ }
+
+ if (yearOrder == 0 && monthOrder == 1 && dayOrder == 2)
+ {
+ order = ORDER_YMD;
+ return true;
+ }
+ if (monthOrder == 0 && dayOrder == 1 && yearOrder == 2)
+ {
+ order = ORDER_MDY;
+ return true;
+ }
+ if (dayOrder == 0 && monthOrder == 1 && yearOrder == 2)
+ {
+ order = ORDER_DMY;
+ return true;
+ }
+ if (yearOrder == 0 && dayOrder == 1 && monthOrder == 2)
+ {
+ order = ORDER_YDM;
+ return true;
+ }
+ order = -1;
+ return false;
+ }
+
+ //
+ // Decide the year/month order from the pattern.
+ //
+ // Return 0 for YM, 1 for MY, otherwise -1.
+ //
+ private static Boolean GetYearMonthOrder(String pattern, DateTimeFormatInfo dtfi, out int order)
+ {
+ int yearOrder = -1;
+ int monthOrder = -1;
+ int orderCount = 0;
+
+ bool inQuote = false;
+ for (int i = 0; i < pattern.Length && orderCount < 2; i++)
+ {
+ char ch = pattern[i];
+ if (ch == '\\' || ch == '%')
+ {
+ i++;
+ continue; // Skip next character that is escaped by this backslash
+ }
+
+ if (ch == '\'' || ch == '"')
+ {
+ inQuote = !inQuote;
+ }
+
+ if (!inQuote)
+ {
+ if (ch == 'y')
+ {
+ yearOrder = orderCount++;
+
+ //
+ // Skip all year pattern charaters.
+ //
+ for (; i + 1 < pattern.Length && pattern[i + 1] == 'y'; i++)
+ {
+ }
+ }
+ else if (ch == 'M')
+ {
+ monthOrder = orderCount++;
+ //
+ // Skip all month pattern characters.
+ //
+ for (; i + 1 < pattern.Length && pattern[i + 1] == 'M'; i++)
+ {
+ }
+ }
+ }
+ }
+
+ if (yearOrder == 0 && monthOrder == 1)
+ {
+ order = ORDER_YM;
+ return true;
+ }
+ if (monthOrder == 0 && yearOrder == 1)
+ {
+ order = ORDER_MY;
+ return true;
+ }
+ order = -1;
+ return false;
+ }
+
+ //
+ // Decide the month/day order from the pattern.
+ //
+ // Return 0 for MD, 1 for DM, otherwise -1.
+ //
+ private static Boolean GetMonthDayOrder(String pattern, DateTimeFormatInfo dtfi, out int order)
+ {
+ int monthOrder = -1;
+ int dayOrder = -1;
+ int orderCount = 0;
+
+ bool inQuote = false;
+ for (int i = 0; i < pattern.Length && orderCount < 2; i++)
+ {
+ char ch = pattern[i];
+ if (ch == '\\' || ch == '%')
+ {
+ i++;
+ continue; // Skip next character that is escaped by this backslash
+ }
+
+ if (ch == '\'' || ch == '"')
+ {
+ inQuote = !inQuote;
+ }
+
+ if (!inQuote)
+ {
+ if (ch == 'd')
+ {
+ int patternCount = 1;
+ //
+ // Skip all day pattern charaters.
+ //
+ for (; i + 1 < pattern.Length && pattern[i + 1] == 'd'; i++)
+ {
+ patternCount++;
+ }
+
+ //
+ // Make sure this is not "ddd" or "dddd", which means day of week.
+ //
+ if (patternCount <= 2)
+ {
+ dayOrder = orderCount++;
+ }
+ }
+ else if (ch == 'M')
+ {
+ monthOrder = orderCount++;
+ //
+ // Skip all month pattern characters.
+ //
+ for (; i + 1 < pattern.Length && pattern[i + 1] == 'M'; i++)
+ {
+ }
+ }
+ }
+ }
+
+ if (monthOrder == 0 && dayOrder == 1)
+ {
+ order = ORDER_MD;
+ return true;
+ }
+ if (dayOrder == 0 && monthOrder == 1)
+ {
+ order = ORDER_DM;
+ return true;
+ }
+ order = -1;
+ return false;
+ }
+
+ //
+ // Adjust the two-digit year if necessary.
+ //
+ private static bool TryAdjustYear(ref DateTimeResult result, int year, out int adjustedYear)
+ {
+ if (year < 100)
+ {
+ try
+ {
+ // the Calendar classes need some real work. Many of the calendars that throw
+ // don't implement a fast/non-allocating (and non-throwing) IsValid{Year|Day|Month} method.
+ // we are making a targeted try/catch fix in the in-place release but will revisit this code
+ // in the next side-by-side release.
+ year = result.calendar.ToFourDigitYear(year);
+ }
+ catch (ArgumentOutOfRangeException)
+ {
+ adjustedYear = -1;
+ return false;
+ }
+ }
+ adjustedYear = year;
+ return true;
+ }
+
+ private static bool SetDateYMD(ref DateTimeResult result, int year, int month, int day)
+ {
+ // Note, longer term these checks should be done at the end of the parse. This current
+ // way of checking creates order dependence with parsing the era name.
+ if (result.calendar.IsValidDay(year, month, day, result.era))
+ {
+ result.SetDate(year, month, day); // YMD
+ return (true);
+ }
+ return (false);
+ }
+
+ private static bool SetDateMDY(ref DateTimeResult result, int month, int day, int year)
+ {
+ return (SetDateYMD(ref result, year, month, day));
+ }
+
+ private static bool SetDateDMY(ref DateTimeResult result, int day, int month, int year)
+ {
+ return (SetDateYMD(ref result, year, month, day));
+ }
+
+ private static bool SetDateYDM(ref DateTimeResult result, int year, int day, int month)
+ {
+ return (SetDateYMD(ref result, year, month, day));
+ }
+
+ private static void GetDefaultYear(ref DateTimeResult result, ref DateTimeStyles styles)
+ {
+ result.Year = result.calendar.GetYear(GetDateTimeNow(ref result, ref styles));
+ result.flags |= ParseFlags.YearDefault;
+ }
+
+ // Processing teriminal case: DS.DX_NN
+ private static Boolean GetDayOfNN(ref DateTimeResult result, ref DateTimeStyles styles, ref DateTimeRawInfo raw, DateTimeFormatInfo dtfi)
+ {
+ if ((result.flags & ParseFlags.HaveDate) != 0)
+ {
+ // Multiple dates in the input string
+ result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
+ return false;
+ }
+
+ int n1 = raw.GetNumber(0);
+ int n2 = raw.GetNumber(1);
+
+ GetDefaultYear(ref result, ref styles);
+
+ int order;
+ if (!GetMonthDayOrder(dtfi.MonthDayPattern, dtfi, out order))
+ {
+ result.SetFailure(ParseFailureKind.FormatWithParameter, "Format_BadDatePattern", dtfi.MonthDayPattern);
+ return false;
+ }
+
+ if (order == ORDER_MD)
+ {
+ if (SetDateYMD(ref result, result.Year, n1, n2)) // MD
+ {
+ result.flags |= ParseFlags.HaveDate;
+ return true;
+ }
+ }
+ else
+ {
+ // ORDER_DM
+ if (SetDateYMD(ref result, result.Year, n2, n1)) // DM
+ {
+ result.flags |= ParseFlags.HaveDate;
+ return true;
+ }
+ }
+ result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
+ return false;
+ }
+
+ // Processing teriminal case: DS.DX_NNN
+ private static Boolean GetDayOfNNN(ref DateTimeResult result, ref DateTimeRawInfo raw, DateTimeFormatInfo dtfi)
+ {
+ if ((result.flags & ParseFlags.HaveDate) != 0)
+ {
+ // Multiple dates in the input string
+ result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
+ return false;
+ }
+
+ int n1 = raw.GetNumber(0);
+ int n2 = raw.GetNumber(1); ;
+ int n3 = raw.GetNumber(2);
+
+ int order;
+ if (!GetYearMonthDayOrder(dtfi.ShortDatePattern, dtfi, out order))
+ {
+ result.SetFailure(ParseFailureKind.FormatWithParameter, "Format_BadDatePattern", dtfi.ShortDatePattern);
+ return false;
+ }
+ int year;
+
+ if (order == ORDER_YMD)
+ {
+ if (TryAdjustYear(ref result, n1, out year) && SetDateYMD(ref result, year, n2, n3)) // YMD
+ {
+ result.flags |= ParseFlags.HaveDate;
+ return true;
+ }
+ }
+ else if (order == ORDER_MDY)
+ {
+ if (TryAdjustYear(ref result, n3, out year) && SetDateMDY(ref result, n1, n2, year)) // MDY
+ {
+ result.flags |= ParseFlags.HaveDate;
+ return true;
+ }
+ }
+ else if (order == ORDER_DMY)
+ {
+ if (TryAdjustYear(ref result, n3, out year) && SetDateDMY(ref result, n1, n2, year)) // DMY
+ {
+ result.flags |= ParseFlags.HaveDate;
+ return true;
+ }
+ }
+ else if (order == ORDER_YDM)
+ {
+ if (TryAdjustYear(ref result, n1, out year) && SetDateYDM(ref result, year, n2, n3)) // YDM
+ {
+ result.flags |= ParseFlags.HaveDate;
+ return true;
+ }
+ }
+ result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
+ return false;
+ }
+
+ private static Boolean GetDayOfMN(ref DateTimeResult result, ref DateTimeStyles styles, ref DateTimeRawInfo raw, DateTimeFormatInfo dtfi)
+ {
+ if ((result.flags & ParseFlags.HaveDate) != 0)
+ {
+ // Multiple dates in the input string
+ result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
+ return false;
+ }
+
+ // The interpretation is based on the MonthDayPattern and YearMonthPattern
+ //
+ // MonthDayPattern YearMonthPattern Interpretation
+ // --------------- ---------------- ---------------
+ // MMMM dd MMMM yyyy Day
+ // MMMM dd yyyy MMMM Day
+ // dd MMMM MMMM yyyy Year
+ // dd MMMM yyyy MMMM Day
+ //
+ // In the first and last cases, it could be either or neither, but a day is a better default interpretation
+ // than a 2 digit year.
+
+ int monthDayOrder;
+ if (!GetMonthDayOrder(dtfi.MonthDayPattern, dtfi, out monthDayOrder))
+ {
+ result.SetFailure(ParseFailureKind.FormatWithParameter, "Format_BadDatePattern", dtfi.MonthDayPattern);
+ return false;
+ }
+ if (monthDayOrder == ORDER_DM)
+ {
+ int yearMonthOrder;
+ if (!GetYearMonthOrder(dtfi.YearMonthPattern, dtfi, out yearMonthOrder))
+ {
+ result.SetFailure(ParseFailureKind.FormatWithParameter, "Format_BadDatePattern", dtfi.YearMonthPattern);
+ return false;
+ }
+ if (yearMonthOrder == ORDER_MY)
+ {
+ int year;
+ if (!TryAdjustYear(ref result, raw.GetNumber(0), out year) || !SetDateYMD(ref result, year, raw.month, 1))
+ {
+ result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
+ return false;
+ }
+ return true;
+ }
+ }
+
+ GetDefaultYear(ref result, ref styles);
+ if (!SetDateYMD(ref result, result.Year, raw.month, raw.GetNumber(0)))
+ {
+ result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
+ return false;
+ }
+ return true;
+ }
+
+ ////////////////////////////////////////////////////////////////////////
+ // Actions:
+ // Deal with the terminal state for Hebrew Month/Day pattern
+ //
+ ////////////////////////////////////////////////////////////////////////
+
+ private static Boolean GetHebrewDayOfNM(ref DateTimeResult result, ref DateTimeRawInfo raw, DateTimeFormatInfo dtfi)
+ {
+ int monthDayOrder;
+ if (!GetMonthDayOrder(dtfi.MonthDayPattern, dtfi, out monthDayOrder))
+ {
+ result.SetFailure(ParseFailureKind.FormatWithParameter, "Format_BadDatePattern", dtfi.MonthDayPattern);
+ return false;
+ }
+ result.Month = raw.month;
+ if (monthDayOrder == ORDER_DM || monthDayOrder == ORDER_MD)
+ {
+ if (result.calendar.IsValidDay(result.Year, result.Month, raw.GetNumber(0), result.era))
+ {
+ result.Day = raw.GetNumber(0);
+ return true;
+ }
+ }
+ result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
+ return false;
+ }
+
+ private static Boolean GetDayOfNM(ref DateTimeResult result, ref DateTimeStyles styles, ref DateTimeRawInfo raw, DateTimeFormatInfo dtfi)
+ {
+ if ((result.flags & ParseFlags.HaveDate) != 0)
+ {
+ // Multiple dates in the input string
+ result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
+ return false;
+ }
+
+ // The interpretation is based on the MonthDayPattern and YearMonthPattern
+ //
+ // MonthDayPattern YearMonthPattern Interpretation
+ // --------------- ---------------- ---------------
+ // MMMM dd MMMM yyyy Day
+ // MMMM dd yyyy MMMM Year
+ // dd MMMM MMMM yyyy Day
+ // dd MMMM yyyy MMMM Day
+ //
+ // In the first and last cases, it could be either or neither, but a day is a better default interpretation
+ // than a 2 digit year.
+
+ int monthDayOrder;
+ if (!GetMonthDayOrder(dtfi.MonthDayPattern, dtfi, out monthDayOrder))
+ {
+ result.SetFailure(ParseFailureKind.FormatWithParameter, "Format_BadDatePattern", dtfi.MonthDayPattern);
+ return false;
+ }
+ if (monthDayOrder == ORDER_MD)
+ {
+ int yearMonthOrder;
+ if (!GetYearMonthOrder(dtfi.YearMonthPattern, dtfi, out yearMonthOrder))
+ {
+ result.SetFailure(ParseFailureKind.FormatWithParameter, "Format_BadDatePattern", dtfi.YearMonthPattern);
+ return false;
+ }
+ if (yearMonthOrder == ORDER_YM)
+ {
+ int year;
+ if (!TryAdjustYear(ref result, raw.GetNumber(0), out year) || !SetDateYMD(ref result, year, raw.month, 1))
+ {
+ result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
+ return false;
+ }
+ return true;
+ }
+ }
+
+ GetDefaultYear(ref result, ref styles);
+ if (!SetDateYMD(ref result, result.Year, raw.month, raw.GetNumber(0)))
+ {
+ result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
+ return false;
+ }
+ return true;
+ }
+
+ private static Boolean GetDayOfMNN(ref DateTimeResult result, ref DateTimeRawInfo raw, DateTimeFormatInfo dtfi)
+ {
+ if ((result.flags & ParseFlags.HaveDate) != 0)
+ {
+ // Multiple dates in the input string
+ result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
+ return false;
+ }
+
+ int n1 = raw.GetNumber(0);
+ int n2 = raw.GetNumber(1);
+
+ int order;
+ if (!GetYearMonthDayOrder(dtfi.ShortDatePattern, dtfi, out order))
+ {
+ result.SetFailure(ParseFailureKind.FormatWithParameter, "Format_BadDatePattern", dtfi.ShortDatePattern);
+ return false;
+ }
+ int year;
+
+ if (order == ORDER_MDY)
+ {
+ if (TryAdjustYear(ref result, n2, out year) && result.calendar.IsValidDay(year, raw.month, n1, result.era))
+ {
+ result.SetDate(year, raw.month, n1); // MDY
+ result.flags |= ParseFlags.HaveDate;
+ return true;
+ }
+ else if (TryAdjustYear(ref result, n1, out year) && result.calendar.IsValidDay(year, raw.month, n2, result.era))
+ {
+ result.SetDate(year, raw.month, n2); // YMD
+ result.flags |= ParseFlags.HaveDate;
+ return true;
+ }
+ }
+ else if (order == ORDER_YMD)
+ {
+ if (TryAdjustYear(ref result, n1, out year) && result.calendar.IsValidDay(year, raw.month, n2, result.era))
+ {
+ result.SetDate(year, raw.month, n2); // YMD
+ result.flags |= ParseFlags.HaveDate;
+ return true;
+ }
+ else if (TryAdjustYear(ref result, n2, out year) && result.calendar.IsValidDay(year, raw.month, n1, result.era))
+ {
+ result.SetDate(year, raw.month, n1); // DMY
+ result.flags |= ParseFlags.HaveDate;
+ return true;
+ }
+ }
+ else if (order == ORDER_DMY)
+ {
+ if (TryAdjustYear(ref result, n2, out year) && result.calendar.IsValidDay(year, raw.month, n1, result.era))
+ {
+ result.SetDate(year, raw.month, n1); // DMY
+ result.flags |= ParseFlags.HaveDate;
+ return true;
+ }
+ else if (TryAdjustYear(ref result, n1, out year) && result.calendar.IsValidDay(year, raw.month, n2, result.era))
+ {
+ result.SetDate(year, raw.month, n2); // YMD
+ result.flags |= ParseFlags.HaveDate;
+ return true;
+ }
+ }
+
+ result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
+ return false;
+ }
+
+ private static Boolean GetDayOfYNN(ref DateTimeResult result, ref DateTimeRawInfo raw, DateTimeFormatInfo dtfi)
+ {
+ if ((result.flags & ParseFlags.HaveDate) != 0)
+ {
+ // Multiple dates in the input string
+ result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
+ return false;
+ }
+
+ int n1 = raw.GetNumber(0);
+ int n2 = raw.GetNumber(1);
+ String pattern = dtfi.ShortDatePattern;
+
+ // For compatibility, don't throw if we can't determine the order, but default to YMD instead
+ int order;
+ if (GetYearMonthDayOrder(pattern, dtfi, out order) && order == ORDER_YDM)
+ {
+ if (SetDateYMD(ref result, raw.year, n2, n1))
+ {
+ result.flags |= ParseFlags.HaveDate;
+ return true; // Year + DM
+ }
+ }
+ else
+ {
+ if (SetDateYMD(ref result, raw.year, n1, n2))
+ {
+ result.flags |= ParseFlags.HaveDate;
+ return true; // Year + MD
+ }
+ }
+ result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
+ return false;
+ }
+
+ private static Boolean GetDayOfNNY(ref DateTimeResult result, ref DateTimeRawInfo raw, DateTimeFormatInfo dtfi)
+ {
+ if ((result.flags & ParseFlags.HaveDate) != 0)
+ {
+ // Multiple dates in the input string
+ result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
+ return false;
+ }
+
+ int n1 = raw.GetNumber(0);
+ int n2 = raw.GetNumber(1);
+
+ int order;
+ if (!GetYearMonthDayOrder(dtfi.ShortDatePattern, dtfi, out order))
+ {
+ result.SetFailure(ParseFailureKind.FormatWithParameter, "Format_BadDatePattern", dtfi.ShortDatePattern);
+ return false;
+ }
+
+ if (order == ORDER_MDY || order == ORDER_YMD)
+ {
+ if (SetDateYMD(ref result, raw.year, n1, n2))
+ {
+ result.flags |= ParseFlags.HaveDate;
+ return true; // MD + Year
+ }
+ }
+ else
+ {
+ if (SetDateYMD(ref result, raw.year, n2, n1))
+ {
+ result.flags |= ParseFlags.HaveDate;
+ return true; // DM + Year
+ }
+ }
+ result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
+ return false;
+ }
+
+
+ private static Boolean GetDayOfYMN(ref DateTimeResult result, ref DateTimeRawInfo raw, DateTimeFormatInfo dtfi)
+ {
+ if ((result.flags & ParseFlags.HaveDate) != 0)
+ {
+ // Multiple dates in the input string
+ result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
+ return false;
+ }
+
+ if (SetDateYMD(ref result, raw.year, raw.month, raw.GetNumber(0)))
+ {
+ result.flags |= ParseFlags.HaveDate;
+ return true;
+ }
+ result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
+ return false;
+ }
+
+ private static Boolean GetDayOfYN(ref DateTimeResult result, ref DateTimeRawInfo raw, DateTimeFormatInfo dtfi)
+ {
+ if ((result.flags & ParseFlags.HaveDate) != 0)
+ {
+ // Multiple dates in the input string
+ result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
+ return false;
+ }
+
+ if (SetDateYMD(ref result, raw.year, raw.GetNumber(0), 1))
+ {
+ result.flags |= ParseFlags.HaveDate;
+ return true;
+ }
+ result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
+ return false;
+ }
+
+ private static Boolean GetDayOfYM(ref DateTimeResult result, ref DateTimeRawInfo raw, DateTimeFormatInfo dtfi)
+ {
+ if ((result.flags & ParseFlags.HaveDate) != 0)
+ {
+ // Multiple dates in the input string
+ result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
+ return false;
+ }
+
+ if (SetDateYMD(ref result, raw.year, raw.month, 1))
+ {
+ result.flags |= ParseFlags.HaveDate;
+ return true;
+ }
+ result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
+ return false;
+ }
+
+ private static void AdjustTimeMark(DateTimeFormatInfo dtfi, ref DateTimeRawInfo raw)
+ {
+ // Specail case for culture which uses AM as empty string.
+ // E.g. af-ZA (0x0436)
+ // S1159 \x0000
+ // S2359 nm
+ // In this case, if we are parsing a string like "2005/09/14 12:23", we will assume this is in AM.
+
+ if (raw.timeMark == TM.NotSet)
+ {
+ if (dtfi.AMDesignator != null && dtfi.PMDesignator != null)
+ {
+ if (dtfi.AMDesignator.Length == 0 && dtfi.PMDesignator.Length != 0)
+ {
+ raw.timeMark = TM.AM;
+ }
+ if (dtfi.PMDesignator.Length == 0 && dtfi.AMDesignator.Length != 0)
+ {
+ raw.timeMark = TM.PM;
+ }
+ }
+ }
+ }
+
+ //
+ // Adjust hour according to the time mark.
+ //
+ private static Boolean AdjustHour(ref int hour, TM timeMark)
+ {
+ if (timeMark != TM.NotSet)
+ {
+ if (timeMark == TM.AM)
+ {
+ if (hour < 0 || hour > 12)
+ {
+ return false;
+ }
+ hour = (hour == 12) ? 0 : hour;
+ }
+ else
+ {
+ if (hour < 0 || hour > 23)
+ {
+ return false;
+ }
+ if (hour < 12)
+ {
+ hour += 12;
+ }
+ }
+ }
+ return true;
+ }
+
+ private static Boolean GetTimeOfN(DateTimeFormatInfo dtfi, ref DateTimeResult result, ref DateTimeRawInfo raw)
+ {
+ if ((result.flags & ParseFlags.HaveTime) != 0)
+ {
+ // Multiple times in the input string
+ result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
+ return false;
+ }
+ //
+ // In this case, we need a time mark. Check if so.
+ //
+ if (raw.timeMark == TM.NotSet)
+ {
+ result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
+ return false;
+ }
+ result.Hour = raw.GetNumber(0);
+ result.flags |= ParseFlags.HaveTime;
+ return true;
+ }
+
+ private static Boolean GetTimeOfNN(DateTimeFormatInfo dtfi, ref DateTimeResult result, ref DateTimeRawInfo raw)
+ {
+ Debug.Assert(raw.numCount >= 2, "raw.numCount >= 2");
+ if ((result.flags & ParseFlags.HaveTime) != 0)
+ {
+ // Multiple times in the input string
+ result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
+ return false;
+ }
+
+ result.Hour = raw.GetNumber(0);
+ result.Minute = raw.GetNumber(1);
+ result.flags |= ParseFlags.HaveTime;
+ return true;
+ }
+
+ private static Boolean GetTimeOfNNN(DateTimeFormatInfo dtfi, ref DateTimeResult result, ref DateTimeRawInfo raw)
+ {
+ if ((result.flags & ParseFlags.HaveTime) != 0)
+ {
+ // Multiple times in the input string
+ result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
+ return false;
+ }
+ Debug.Assert(raw.numCount >= 3, "raw.numCount >= 3");
+ result.Hour = raw.GetNumber(0);
+ result.Minute = raw.GetNumber(1);
+ result.Second = raw.GetNumber(2);
+ result.flags |= ParseFlags.HaveTime;
+ return true;
+ }
+
+ //
+ // Processing terminal state: A Date suffix followed by one number.
+ //
+ private static Boolean GetDateOfDSN(ref DateTimeResult result, ref DateTimeRawInfo raw)
+ {
+ if (raw.numCount != 1 || result.Day != -1)
+ {
+ result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
+ return false;
+ }
+ result.Day = raw.GetNumber(0);
+ return true;
+ }
+
+ private static Boolean GetDateOfNDS(ref DateTimeResult result, ref DateTimeRawInfo raw)
+ {
+ if (result.Month == -1)
+ {
+ //Should have a month suffix
+ result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
+ return false;
+ }
+ if (result.Year != -1)
+ {
+ // Aleady has a year suffix
+ result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
+ return false;
+ }
+ if (!TryAdjustYear(ref result, raw.GetNumber(0), out result.Year))
+ {
+ // the year value is out of range
+ result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
+ return false;
+ }
+ result.Day = 1;
+ return true;
+ }
+
+ private static Boolean GetDateOfNNDS(ref DateTimeResult result, ref DateTimeRawInfo raw, DateTimeFormatInfo dtfi)
+ {
+ // For partial CJK Dates, the only valid formats are with a specified year, followed by two numbers, which
+ // will be the Month and Day, and with a specified Month, when the numbers are either the year and day or
+ // day and year, depending on the short date pattern.
+
+ if ((result.flags & ParseFlags.HaveYear) != 0)
+ {
+ if (((result.flags & ParseFlags.HaveMonth) == 0) && ((result.flags & ParseFlags.HaveDay) == 0))
+ {
+ if (TryAdjustYear(ref result, raw.year, out result.Year) && SetDateYMD(ref result, result.Year, raw.GetNumber(0), raw.GetNumber(1)))
+ {
+ return true;
+ }
+ }
+ }
+ else if ((result.flags & ParseFlags.HaveMonth) != 0)
+ {
+ if (((result.flags & ParseFlags.HaveYear) == 0) && ((result.flags & ParseFlags.HaveDay) == 0))
+ {
+ int order;
+ if (!GetYearMonthDayOrder(dtfi.ShortDatePattern, dtfi, out order))
+ {
+ result.SetFailure(ParseFailureKind.FormatWithParameter, "Format_BadDatePattern", dtfi.ShortDatePattern);
+ return false;
+ }
+ int year;
+ if (order == ORDER_YMD)
+ {
+ if (TryAdjustYear(ref result, raw.GetNumber(0), out year) && SetDateYMD(ref result, year, result.Month, raw.GetNumber(1)))
+ {
+ return true;
+ }
+ }
+ else
+ {
+ if (TryAdjustYear(ref result, raw.GetNumber(1), out year) && SetDateYMD(ref result, year, result.Month, raw.GetNumber(0)))
+ {
+ return true;
+ }
+ }
+ }
+ }
+ result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
+ return false;
+ }
+
+ //
+ // 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;
+ }
+
+ ////////////////////////////////////////////////////////////////////////
+ //
+ // Actions:
+ // This is used by DateTime.Parse().
+ // Process the terminal state for the Hebrew calendar parsing.
+ //
+ ////////////////////////////////////////////////////////////////////////
+
+ internal static Boolean ProcessHebrewTerminalState(DS dps, ref DateTimeResult result, ref DateTimeStyles styles, ref DateTimeRawInfo raw, DateTimeFormatInfo dtfi)
+ {
+ // The following are accepted terminal state for Hebrew date.
+ switch (dps)
+ {
+ case DS.DX_MNN:
+ // Deal with the default long/short date format when the year number is ambigous (i.e. year < 100).
+ raw.year = raw.GetNumber(1);
+ if (!dtfi.YearMonthAdjustment(ref raw.year, ref raw.month, true))
+ {
+ result.SetFailure(ParseFailureKind.FormatBadDateTimeCalendar, "Format_BadDateTimeCalendar", null);
+ return false;
+ }
+ if (!GetDayOfMNN(ref result, ref raw, dtfi))
+ {
+ return false;
+ }
+ break;
+ case DS.DX_YMN:
+ // Deal with the default long/short date format when the year number is NOT ambigous (i.e. year >= 100).
+ if (!dtfi.YearMonthAdjustment(ref raw.year, ref raw.month, true))
+ {
+ result.SetFailure(ParseFailureKind.FormatBadDateTimeCalendar, "Format_BadDateTimeCalendar", null);
+ return false;
+ }
+ if (!GetDayOfYMN(ref result, ref raw, dtfi))
+ {
+ return false;
+ }
+ break;
+ case DS.DX_NM:
+ case DS.DX_MN:
+ // Deal with Month/Day pattern.
+ GetDefaultYear(ref result, ref styles);
+ if (!dtfi.YearMonthAdjustment(ref result.Year, ref raw.month, true))
+ {
+ result.SetFailure(ParseFailureKind.FormatBadDateTimeCalendar, "Format_BadDateTimeCalendar", null);
+ return false;
+ }
+ if (!GetHebrewDayOfNM(ref result, ref raw, dtfi))
+ {
+ return false;
+ }
+ break;
+ case DS.DX_YM:
+ // Deal with Year/Month pattern.
+ if (!dtfi.YearMonthAdjustment(ref raw.year, ref raw.month, true))
+ {
+ result.SetFailure(ParseFailureKind.FormatBadDateTimeCalendar, "Format_BadDateTimeCalendar", null);
+ return false;
+ }
+ if (!GetDayOfYM(ref result, ref raw, dtfi))
+ {
+ return false;
+ }
+ break;
+ case DS.TX_N:
+ // Deal hour + AM/PM
+ if (!GetTimeOfN(dtfi, ref result, ref raw))
+ {
+ return false;
+ }
+ break;
+ case DS.TX_NN:
+ if (!GetTimeOfNN(dtfi, ref result, ref raw))
+ {
+ return false;
+ }
+ break;
+ case DS.TX_NNN:
+ if (!GetTimeOfNNN(dtfi, ref result, ref raw))
+ {
+ return false;
+ }
+ break;
+ default:
+ result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
+ return false;
+ }
+ if (dps > DS.ERROR)
+ {
+ //
+ // We have reached a terminal state. Reset the raw num count.
+ //
+ raw.numCount = 0;
+ }
+ return true;
+ }
+
+ //
+ // A terminal state has been reached, call the appropriate function to fill in the parsing result.
+ // Return true if the state is a terminal state.
+ //
+ internal static Boolean ProcessTerminaltState(DS dps, ref DateTimeResult result, ref DateTimeStyles styles, ref DateTimeRawInfo raw, DateTimeFormatInfo dtfi)
+ {
+ bool passed = true;
+ switch (dps)
+ {
+ case DS.DX_NN:
+ passed = GetDayOfNN(ref result, ref styles, ref raw, dtfi);
+ break;
+ case DS.DX_NNN:
+ passed = GetDayOfNNN(ref result, ref raw, dtfi);
+ break;
+ case DS.DX_MN:
+ passed = GetDayOfMN(ref result, ref styles, ref raw, dtfi);
+ break;
+ case DS.DX_NM:
+ passed = GetDayOfNM(ref result, ref styles, ref raw, dtfi);
+ break;
+ case DS.DX_MNN:
+ passed = GetDayOfMNN(ref result, ref raw, dtfi);
+ break;
+ case DS.DX_DS:
+ // The result has got the correct value. No need to process.
+ passed = true;
+ break;
+ case DS.DX_YNN:
+ passed = GetDayOfYNN(ref result, ref raw, dtfi);
+ break;
+ case DS.DX_NNY:
+ passed = GetDayOfNNY(ref result, ref raw, dtfi);
+ break;
+ case DS.DX_YMN:
+ passed = GetDayOfYMN(ref result, ref raw, dtfi);
+ break;
+ case DS.DX_YN:
+ passed = GetDayOfYN(ref result, ref raw, dtfi);
+ break;
+ case DS.DX_YM:
+ passed = GetDayOfYM(ref result, ref raw, dtfi);
+ break;
+ case DS.TX_N:
+ passed = GetTimeOfN(dtfi, ref result, ref raw);
+ break;
+ case DS.TX_NN:
+ passed = GetTimeOfNN(dtfi, ref result, ref raw);
+ break;
+ case DS.TX_NNN:
+ passed = GetTimeOfNNN(dtfi, ref result, ref raw);
+ break;
+ case DS.TX_TS:
+ // The result has got the correct value. Nothing to do.
+ passed = true;
+ break;
+ case DS.DX_DSN:
+ passed = GetDateOfDSN(ref result, ref raw);
+ break;
+ case DS.DX_NDS:
+ passed = GetDateOfNDS(ref result, ref raw);
+ break;
+ case DS.DX_NNDS:
+ passed = GetDateOfNNDS(ref result, ref raw, dtfi);
+ break;
+ }
+
+ PTSTraceExit(dps, passed);
+ if (!passed)
+ {
+ return false;
+ }
+
+ if (dps > DS.ERROR)
+ {
+ //
+ // We have reached a terminal state. Reset the raw num count.
+ //
+ raw.numCount = 0;
+ }
+ return true;
+ }
+
+ internal static DateTime Parse(String s, DateTimeFormatInfo dtfi, DateTimeStyles styles)
+ {
+ DateTimeResult result = new DateTimeResult(); // The buffer to store the parsing result.
+ result.Init();
+ if (TryParse(s, dtfi, styles, ref result))
+ {
+ return result.parsedDate;
+ }
+ else
+ {
+ throw GetDateTimeParseException(ref result);
+ }
+ }
+
+ internal static DateTime Parse(String s, DateTimeFormatInfo dtfi, DateTimeStyles styles, out TimeSpan offset)
+ {
+ DateTimeResult result = new DateTimeResult(); // The buffer to store the parsing result.
+ result.Init();
+ result.flags |= ParseFlags.CaptureOffset;
+ if (TryParse(s, dtfi, styles, ref result))
+ {
+ offset = result.timeZoneOffset;
+ return result.parsedDate;
+ }
+ else
+ {
+ throw GetDateTimeParseException(ref result);
+ }
+ }
+
+
+ internal static bool TryParse(String s, DateTimeFormatInfo dtfi, DateTimeStyles styles, out DateTime result)
+ {
+ result = DateTime.MinValue;
+ DateTimeResult resultData = new DateTimeResult(); // The buffer to store the parsing result.
+ resultData.Init();
+ if (TryParse(s, dtfi, styles, ref resultData))
+ {
+ result = resultData.parsedDate;
+ return true;
+ }
+ return false;
+ }
+
+ internal static bool TryParse(String s, DateTimeFormatInfo dtfi, DateTimeStyles styles, out DateTime result, out TimeSpan offset)
+ {
+ result = DateTime.MinValue;
+ offset = TimeSpan.Zero;
+ DateTimeResult parseResult = new DateTimeResult(); // The buffer to store the parsing result.
+ parseResult.Init();
+ parseResult.flags |= ParseFlags.CaptureOffset;
+ if (TryParse(s, dtfi, styles, ref parseResult))
+ {
+ result = parseResult.parsedDate;
+ offset = parseResult.timeZoneOffset;
+ return true;
+ }
+ return false;
+ }
+
+
+ //
+ // 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, nameof(s));
+ return false;
+ }
+ if (s.Length == 0)
+ {
+ result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
+ return false;
+ }
+
+ Debug.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;
+ }
+
+
+ // Handles time zone adjustments and sets DateTimeKind values as required by the styles
+ private static Boolean DetermineTimeZoneAdjustments(ref DateTimeResult result, DateTimeStyles styles, Boolean bTimeOnly)
+ {
+ if ((result.flags & ParseFlags.CaptureOffset) != 0)
+ {
+ // This is a DateTimeOffset parse, so the offset will actually be captured directly, and
+ // no adjustment is required in most cases
+ return DateTimeOffsetTimeZonePostProcessing(ref result, styles);
+ }
+ else
+ {
+ Int64 offsetTicks = result.timeZoneOffset.Ticks;
+
+ // the DateTime offset must be within +- 14:00 hours.
+ if (offsetTicks < DateTimeOffset.MinOffset || offsetTicks > DateTimeOffset.MaxOffset)
+ {
+ result.SetFailure(ParseFailureKind.Format, "Format_OffsetOutOfRange", null);
+ return false;
+ }
+ }
+
+ // The flags AssumeUniveral and AssumeLocal only apply when the input does not have a time zone
+ if ((result.flags & ParseFlags.TimeZoneUsed) == 0)
+ {
+ // If AssumeLocal or AssumeLocal is used, there will always be a kind specified. As in the
+ // case when a time zone is present, it will default to being local unless AdjustToUniversal
+ // is present. These comparisons determine whether setting the kind is sufficient, or if a
+ // time zone adjustment is required. For consistentcy with the rest of parsing, it is desirable
+ // to fall through to the Adjust methods below, so that there is consist handling of boundary
+ // cases like wrapping around on time-only dates and temporarily allowing an adjusted date
+ // to exceed DateTime.MaxValue
+ if ((styles & DateTimeStyles.AssumeLocal) != 0)
+ {
+ if ((styles & DateTimeStyles.AdjustToUniversal) != 0)
+ {
+ result.flags |= ParseFlags.TimeZoneUsed;
+ result.timeZoneOffset = TimeZoneInfo.GetLocalUtcOffset(result.parsedDate, TimeZoneInfoOptions.NoThrowOnInvalidTime);
+ }
+ else
+ {
+ result.parsedDate = DateTime.SpecifyKind(result.parsedDate, DateTimeKind.Local);
+ return true;
+ }
+ }
+ else if ((styles & DateTimeStyles.AssumeUniversal) != 0)
+ {
+ if ((styles & DateTimeStyles.AdjustToUniversal) != 0)
+ {
+ result.parsedDate = DateTime.SpecifyKind(result.parsedDate, DateTimeKind.Utc);
+ return true;
+ }
+ else
+ {
+ result.flags |= ParseFlags.TimeZoneUsed;
+ result.timeZoneOffset = TimeSpan.Zero;
+ }
+ }
+ else
+ {
+ // No time zone and no Assume flags, so DateTimeKind.Unspecified is fine
+ Debug.Assert(result.parsedDate.Kind == DateTimeKind.Unspecified, "result.parsedDate.Kind == DateTimeKind.Unspecified");
+ return true;
+ }
+ }
+
+ if (((styles & DateTimeStyles.RoundtripKind) != 0) && ((result.flags & ParseFlags.TimeZoneUtc) != 0))
+ {
+ result.parsedDate = DateTime.SpecifyKind(result.parsedDate, DateTimeKind.Utc);
+ return true;
+ }
+
+ if ((styles & DateTimeStyles.AdjustToUniversal) != 0)
+ {
+ return (AdjustTimeZoneToUniversal(ref result));
+ }
+ return (AdjustTimeZoneToLocal(ref result, bTimeOnly));
+ }
+
+ // Apply validation and adjustments specific to DateTimeOffset
+ private static Boolean DateTimeOffsetTimeZonePostProcessing(ref DateTimeResult result, DateTimeStyles styles)
+ {
+ // For DateTimeOffset, default to the Utc or Local offset when an offset was not specified by
+ // the input string.
+ if ((result.flags & ParseFlags.TimeZoneUsed) == 0)
+ {
+ if ((styles & DateTimeStyles.AssumeUniversal) != 0)
+ {
+ // AssumeUniversal causes the offset to default to zero (0)
+ result.timeZoneOffset = TimeSpan.Zero;
+ }
+ else
+ {
+ // AssumeLocal causes the offset to default to Local. This flag is on by default for DateTimeOffset.
+ result.timeZoneOffset = TimeZoneInfo.GetLocalUtcOffset(result.parsedDate, TimeZoneInfoOptions.NoThrowOnInvalidTime);
+ }
+ }
+
+ Int64 offsetTicks = result.timeZoneOffset.Ticks;
+
+ // there should be no overflow, because the offset can be no more than -+100 hours and the date already
+ // fits within a DateTime.
+ Int64 utcTicks = result.parsedDate.Ticks - offsetTicks;
+
+ // For DateTimeOffset, both the parsed time and the corresponding UTC value must be within the boundaries
+ // of a DateTime instance.
+ if (utcTicks < DateTime.MinTicks || utcTicks > DateTime.MaxTicks)
+ {
+ result.SetFailure(ParseFailureKind.Format, "Format_UTCOutOfRange", null);
+ return false;
+ }
+
+ // the offset must be within +- 14:00 hours.
+ if (offsetTicks < DateTimeOffset.MinOffset || offsetTicks > DateTimeOffset.MaxOffset)
+ {
+ result.SetFailure(ParseFailureKind.Format, "Format_OffsetOutOfRange", null);
+ return false;
+ }
+
+ // DateTimeOffset should still honor the AdjustToUniversal flag for consistency with DateTime. It means you
+ // want to return an adjusted UTC value, so store the utcTicks in the DateTime and set the offset to zero
+ if ((styles & DateTimeStyles.AdjustToUniversal) != 0)
+ {
+ if (((result.flags & ParseFlags.TimeZoneUsed) == 0) && ((styles & DateTimeStyles.AssumeUniversal) == 0))
+ {
+ // Handle the special case where the timeZoneOffset was defaulted to Local
+ Boolean toUtcResult = AdjustTimeZoneToUniversal(ref result);
+ result.timeZoneOffset = TimeSpan.Zero;
+ return toUtcResult;
+ }
+
+ // The constructor should always succeed because of the range check earlier in the function
+ // Althought it is UTC, internally DateTimeOffset does not use this flag
+ result.parsedDate = new DateTime(utcTicks, DateTimeKind.Utc);
+ result.timeZoneOffset = TimeSpan.Zero;
+ }
+
+ return true;
+ }
+
+
+ //
+ // Adjust the specified time to universal time based on the supplied timezone.
+ // E.g. when parsing "2001/06/08 14:00-07:00",
+ // the time is 2001/06/08 14:00, and timeZoneOffset = -07:00.
+ // The result will be "2001/06/08 21:00"
+ //
+ private static Boolean AdjustTimeZoneToUniversal(ref DateTimeResult result)
+ {
+ long resultTicks = result.parsedDate.Ticks;
+ resultTicks -= result.timeZoneOffset.Ticks;
+ if (resultTicks < 0)
+ {
+ resultTicks += Calendar.TicksPerDay;
+ }
+
+ if (resultTicks < DateTime.MinTicks || resultTicks > DateTime.MaxTicks)
+ {
+ result.SetFailure(ParseFailureKind.Format, "Format_DateOutOfRange", null);
+ return false;
+ }
+ result.parsedDate = new DateTime(resultTicks, DateTimeKind.Utc);
+ return true;
+ }
+
+ //
+ // Adjust the specified time to universal time based on the supplied timezone,
+ // and then convert to local time.
+ // E.g. when parsing "2001/06/08 14:00-04:00", and local timezone is GMT-7.
+ // the time is 2001/06/08 14:00, and timeZoneOffset = -05:00.
+ // The result will be "2001/06/08 11:00"
+ //
+ private static Boolean AdjustTimeZoneToLocal(ref DateTimeResult result, bool bTimeOnly)
+ {
+ long resultTicks = result.parsedDate.Ticks;
+ // Convert to local ticks
+ TimeZoneInfo tz = TimeZoneInfo.Local;
+ Boolean isAmbiguousLocalDst = false;
+ if (resultTicks < Calendar.TicksPerDay)
+ {
+ //
+ // This is time of day.
+ //
+
+ // Adjust timezone.
+ resultTicks -= result.timeZoneOffset.Ticks;
+ // If the time is time of day, use the current timezone offset.
+ resultTicks += tz.GetUtcOffset(bTimeOnly ? DateTime.Now : result.parsedDate, TimeZoneInfoOptions.NoThrowOnInvalidTime).Ticks;
+
+ if (resultTicks < 0)
+ {
+ resultTicks += Calendar.TicksPerDay;
+ }
+ }
+ else
+ {
+ // Adjust timezone to GMT.
+ resultTicks -= result.timeZoneOffset.Ticks;
+ if (resultTicks < DateTime.MinTicks || resultTicks > DateTime.MaxTicks)
+ {
+ // If the result ticks is greater than DateTime.MaxValue, we can not create a DateTime from this ticks.
+ // In this case, keep using the old code.
+ resultTicks += tz.GetUtcOffset(result.parsedDate, TimeZoneInfoOptions.NoThrowOnInvalidTime).Ticks;
+ }
+ else
+ {
+ // Convert the GMT time to local time.
+ DateTime utcDt = new DateTime(resultTicks, DateTimeKind.Utc);
+ Boolean isDaylightSavings = false;
+ resultTicks += TimeZoneInfo.GetUtcOffsetFromUtc(utcDt, TimeZoneInfo.Local, out isDaylightSavings, out isAmbiguousLocalDst).Ticks;
+ }
+ }
+ if (resultTicks < DateTime.MinTicks || resultTicks > DateTime.MaxTicks)
+ {
+ result.parsedDate = DateTime.MinValue;
+ result.SetFailure(ParseFailureKind.Format, "Format_DateOutOfRange", null);
+ return false;
+ }
+ result.parsedDate = new DateTime(resultTicks, DateTimeKind.Local, isAmbiguousLocalDst);
+ return true;
+ }
+
+ //
+ // Parse the ISO8601 format string found during Parse();
+ //
+ //
+ private static bool ParseISO8601(ref DateTimeRawInfo raw, ref __DTString str, DateTimeStyles styles, ref DateTimeResult result)
+ {
+ if (raw.year < 0 || raw.GetNumber(0) < 0 || raw.GetNumber(1) < 0)
+ {
+ }
+ str.Index--;
+ int hour, minute;
+ int second = 0;
+ double partSecond = 0;
+
+ str.SkipWhiteSpaces();
+ if (!ParseDigits(ref str, 2, out hour))
+ {
+ result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
+ return false;
+ }
+ str.SkipWhiteSpaces();
+ if (!str.Match(':'))
+ {
+ result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
+ return false;
+ }
+ str.SkipWhiteSpaces();
+ if (!ParseDigits(ref str, 2, out minute))
+ {
+ result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
+ return false;
+ }
+ str.SkipWhiteSpaces();
+ if (str.Match(':'))
+ {
+ str.SkipWhiteSpaces();
+ if (!ParseDigits(ref str, 2, out second))
+ {
+ result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
+ return false;
+ }
+ if (str.Match('.'))
+ {
+ if (!ParseFraction(ref str, out partSecond))
+ {
+ result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
+ return false;
+ }
+ str.Index--;
+ }
+ str.SkipWhiteSpaces();
+ }
+ if (str.GetNext())
+ {
+ char ch = str.GetChar();
+ if (ch == '+' || ch == '-')
+ {
+ result.flags |= ParseFlags.TimeZoneUsed;
+ if (!ParseTimeZone(ref str, ref result.timeZoneOffset))
+ {
+ result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
+ return false;
+ }
+ }
+ else if (ch == 'Z' || ch == 'z')
+ {
+ result.flags |= ParseFlags.TimeZoneUsed;
+ result.timeZoneOffset = TimeSpan.Zero;
+ result.flags |= ParseFlags.TimeZoneUtc;
+ }
+ else
+ {
+ str.Index--;
+ }
+ str.SkipWhiteSpaces();
+ if (str.Match('#'))
+ {
+ if (!VerifyValidPunctuation(ref str))
+ {
+ result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
+ return false;
+ }
+ str.SkipWhiteSpaces();
+ }
+ if (str.Match('\0'))
+ {
+ if (!VerifyValidPunctuation(ref str))
+ {
+ result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
+ return false;
+ }
+ }
+ if (str.GetNext())
+ {
+ // If this is true, there were non-white space characters remaining in the DateTime
+ result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
+ return false;
+ }
+ }
+
+ DateTime time;
+ Calendar calendar = GregorianCalendar.GetDefaultInstance();
+ if (!calendar.TryToDateTime(raw.year, raw.GetNumber(0), raw.GetNumber(1),
+ hour, minute, second, 0, result.era, out time))
+ {
+ result.SetFailure(ParseFailureKind.FormatBadDateTimeCalendar, "Format_BadDateTimeCalendar", null);
+ return false;
+ }
+
+ time = time.AddTicks((long)Math.Round(partSecond * Calendar.TicksPerSecond));
+ result.parsedDate = time;
+ if (!DetermineTimeZoneAdjustments(ref result, styles, false))
+ {
+ return false;
+ }
+ return true;
+ }
+
+
+ ////////////////////////////////////////////////////////////////////////
+ //
+ // Actions:
+ // Parse the current word as a Hebrew number.
+ // This is used by DateTime.ParseExact().
+ //
+ ////////////////////////////////////////////////////////////////////////
+
+ internal static bool MatchHebrewDigits(ref __DTString str, int digitLen, out int number)
+ {
+ number = 0;
+
+ // Create a context object so that we can parse the Hebrew number text character by character.
+ HebrewNumberParsingContext context = new HebrewNumberParsingContext(0);
+
+ // Set this to ContinueParsing so that we will run the following while loop in the first time.
+ HebrewNumberParsingState state = HebrewNumberParsingState.ContinueParsing;
+
+ while (state == HebrewNumberParsingState.ContinueParsing && str.GetNext())
+ {
+ state = HebrewNumber.ParseByChar(str.GetChar(), ref context);
+ }
+
+ if (state == HebrewNumberParsingState.FoundEndOfHebrewNumber)
+ {
+ // If we have reached a terminal state, update the result and returns.
+ number = context.result;
+ return (true);
+ }
+
+ // If we run out of the character before reaching FoundEndOfHebrewNumber, or
+ // the state is InvalidHebrewNumber or ContinueParsing, we fail to match a Hebrew number.
+ // Return an error.
+ return false;
+ }
+
+ /*=================================ParseDigits==================================
+ **Action: Parse the number string in __DTString that are formatted using
+ ** the following patterns:
+ ** "0", "00", and "000..0"
+ **Returns: the integer value
+ **Arguments: str: a __DTString. The parsing will start from the
+ ** next character after str.Index.
+ **Exceptions: FormatException if error in parsing number.
+ ==============================================================================*/
+
+ internal static bool ParseDigits(ref __DTString str, int digitLen, out int result)
+ {
+ if (digitLen == 1)
+ {
+ // 1 really means 1 or 2 for this call
+ return ParseDigits(ref str, 1, 2, out result);
+ }
+ else
+ {
+ return ParseDigits(ref str, digitLen, digitLen, out result);
+ }
+ }
+
+ internal static bool ParseDigits(ref __DTString str, int minDigitLen, int maxDigitLen, out int result)
+ {
+ Debug.Assert(minDigitLen > 0, "minDigitLen > 0");
+ Debug.Assert(maxDigitLen < 9, "maxDigitLen < 9");
+ Debug.Assert(minDigitLen <= maxDigitLen, "minDigitLen <= maxDigitLen");
+ result = 0;
+ int startingIndex = str.Index;
+ int tokenLength = 0;
+ while (tokenLength < maxDigitLen)
+ {
+ if (!str.GetNextDigit())
+ {
+ str.Index--;
+ break;
+ }
+ result = result * 10 + str.GetDigit();
+ tokenLength++;
+ }
+ if (tokenLength < minDigitLen)
+ {
+ str.Index = startingIndex;
+ return false;
+ }
+ return true;
+ }
+
+ /*=================================ParseFractionExact==================================
+ **Action: Parse the number string in __DTString that are formatted using
+ ** the following patterns:
+ ** "0", "00", and "000..0"
+ **Returns: the fraction value
+ **Arguments: str: a __DTString. The parsing will start from the
+ ** next character after str.Index.
+ **Exceptions: FormatException if error in parsing number.
+ ==============================================================================*/
+
+ private static bool ParseFractionExact(ref __DTString str, int maxDigitLen, ref double result)
+ {
+ if (!str.GetNextDigit())
+ {
+ str.Index--;
+ return false;
+ }
+ result = str.GetDigit();
+
+ int digitLen = 1;
+ for (; digitLen < maxDigitLen; digitLen++)
+ {
+ if (!str.GetNextDigit())
+ {
+ str.Index--;
+ break;
+ }
+ result = result * 10 + str.GetDigit();
+ }
+
+ result = ((double)result / Math.Pow(10, digitLen));
+ return (digitLen == maxDigitLen);
+ }
+
+ /*=================================ParseSign==================================
+ **Action: Parse a positive or a negative sign.
+ **Returns: true if postive sign. flase if negative sign.
+ **Arguments: str: a __DTString. The parsing will start from the
+ ** next character after str.Index.
+ **Exceptions: FormatException if end of string is encountered or a sign
+ ** symbol is not found.
+ ==============================================================================*/
+
+ private static bool ParseSign(ref __DTString str, ref bool result)
+ {
+ if (!str.GetNext())
+ {
+ // A sign symbol ('+' or '-') is expected. However, end of string is encountered.
+ return false;
+ }
+ char ch = str.GetChar();
+ if (ch == '+')
+ {
+ result = true;
+ return (true);
+ }
+ else if (ch == '-')
+ {
+ result = false;
+ return (true);
+ }
+ // A sign symbol ('+' or '-') is expected.
+ return false;
+ }
+
+ /*=================================ParseTimeZoneOffset==================================
+ **Action: Parse the string formatted using "z", "zz", "zzz" in DateTime.Format().
+ **Returns: the TimeSpan for the parsed timezone offset.
+ **Arguments: str: a __DTString. The parsing will start from the
+ ** next character after str.Index.
+ ** len: the repeated number of the "z"
+ **Exceptions: FormatException if errors in parsing.
+ ==============================================================================*/
+
+ private static bool ParseTimeZoneOffset(ref __DTString str, int len, ref TimeSpan result)
+ {
+ bool isPositive = true;
+ int hourOffset;
+ int minuteOffset = 0;
+
+ switch (len)
+ {
+ case 1:
+ case 2:
+ if (!ParseSign(ref str, ref isPositive))
+ {
+ return (false);
+ }
+ if (!ParseDigits(ref str, len, out hourOffset))
+ {
+ return (false);
+ }
+ break;
+ default:
+ if (!ParseSign(ref str, ref isPositive))
+ {
+ return (false);
+ }
+
+ // Parsing 1 digit will actually parse 1 or 2.
+ if (!ParseDigits(ref str, 1, out hourOffset))
+ {
+ return (false);
+ }
+ // ':' is optional.
+ if (str.Match(":"))
+ {
+ // Found ':'
+ if (!ParseDigits(ref str, 2, out minuteOffset))
+ {
+ return (false);
+ }
+ }
+ else
+ {
+ // Since we can not match ':', put the char back.
+ str.Index--;
+ if (!ParseDigits(ref str, 2, out minuteOffset))
+ {
+ return (false);
+ }
+ }
+ break;
+ }
+ if (minuteOffset < 0 || minuteOffset >= 60)
+ {
+ return false;
+ }
+
+ result = (new TimeSpan(hourOffset, minuteOffset, 0));
+ if (!isPositive)
+ {
+ result = result.Negate();
+ }
+ return (true);
+ }
+
+ /*=================================MatchAbbreviatedMonthName==================================
+ **Action: Parse the abbreviated month name from string starting at str.Index.
+ **Returns: A value from 1 to 12 for the first month to the twelveth month.
+ **Arguments: str: a __DTString. The parsing will start from the
+ ** next character after str.Index.
+ **Exceptions: FormatException if an abbreviated month name can not be found.
+ ==============================================================================*/
+
+ private static bool MatchAbbreviatedMonthName(ref __DTString str, DateTimeFormatInfo dtfi, ref int result)
+ {
+ int maxMatchStrLen = 0;
+ result = -1;
+ if (str.GetNext())
+ {
+ //
+ // Scan the month names (note that some calendars has 13 months) and find
+ // the matching month name which has the max string length.
+ // We need to do this because some cultures (e.g. "cs-CZ") which have
+ // abbreviated month names with the same prefix.
+ //
+ int monthsInYear = (dtfi.GetMonthName(13).Length == 0 ? 12 : 13);
+ for (int i = 1; i <= monthsInYear; i++)
+ {
+ String searchStr = dtfi.GetAbbreviatedMonthName(i);
+ int matchStrLen = searchStr.Length;
+ if (dtfi.HasSpacesInMonthNames
+ ? str.MatchSpecifiedWords(searchStr, false, ref matchStrLen)
+ : str.MatchSpecifiedWord(searchStr))
+ {
+ if (matchStrLen > maxMatchStrLen)
+ {
+ maxMatchStrLen = matchStrLen;
+ result = i;
+ }
+ }
+ }
+
+ // Search leap year form.
+ if ((dtfi.FormatFlags & DateTimeFormatFlags.UseLeapYearMonth) != 0)
+ {
+ int tempResult = str.MatchLongestWords(dtfi.internalGetLeapYearMonthNames(), ref maxMatchStrLen);
+ // We found a longer match in the leap year month name. Use this as the result.
+ // The result from MatchLongestWords is 0 ~ length of word array.
+ // So we increment the result by one to become the month value.
+ if (tempResult >= 0)
+ {
+ result = tempResult + 1;
+ }
+ }
+ }
+ if (result > 0)
+ {
+ str.Index += (maxMatchStrLen - 1);
+ return (true);
+ }
+ return false;
+ }
+
+ /*=================================MatchMonthName==================================
+ **Action: Parse the month name from string starting at str.Index.
+ **Returns: A value from 1 to 12 indicating the first month to the twelveth month.
+ **Arguments: str: a __DTString. The parsing will start from the
+ ** next character after str.Index.
+ **Exceptions: FormatException if a month name can not be found.
+ ==============================================================================*/
+
+ private static bool MatchMonthName(ref __DTString str, DateTimeFormatInfo dtfi, ref int result)
+ {
+ int maxMatchStrLen = 0;
+ result = -1;
+ if (str.GetNext())
+ {
+ //
+ // Scan the month names (note that some calendars has 13 months) and find
+ // the matching month name which has the max string length.
+ // We need to do this because some cultures (e.g. "vi-VN") which have
+ // month names with the same prefix.
+ //
+ int monthsInYear = (dtfi.GetMonthName(13).Length == 0 ? 12 : 13);
+ for (int i = 1; i <= monthsInYear; i++)
+ {
+ String searchStr = dtfi.GetMonthName(i);
+ int matchStrLen = searchStr.Length;
+ if (dtfi.HasSpacesInMonthNames
+ ? str.MatchSpecifiedWords(searchStr, false, ref matchStrLen)
+ : str.MatchSpecifiedWord(searchStr))
+ {
+ if (matchStrLen > maxMatchStrLen)
+ {
+ maxMatchStrLen = matchStrLen;
+ result = i;
+ }
+ }
+ }
+
+ // Search genitive form.
+ if ((dtfi.FormatFlags & DateTimeFormatFlags.UseGenitiveMonth) != 0)
+ {
+ int tempResult = str.MatchLongestWords(dtfi.MonthGenitiveNames, ref maxMatchStrLen);
+ // We found a longer match in the genitive month name. Use this as the result.
+ // The result from MatchLongestWords is 0 ~ length of word array.
+ // So we increment the result by one to become the month value.
+ if (tempResult >= 0)
+ {
+ result = tempResult + 1;
+ }
+ }
+
+ // Search leap year form.
+ if ((dtfi.FormatFlags & DateTimeFormatFlags.UseLeapYearMonth) != 0)
+ {
+ int tempResult = str.MatchLongestWords(dtfi.internalGetLeapYearMonthNames(), ref maxMatchStrLen);
+ // We found a longer match in the leap year month name. Use this as the result.
+ // The result from MatchLongestWords is 0 ~ length of word array.
+ // So we increment the result by one to become the month value.
+ if (tempResult >= 0)
+ {
+ result = tempResult + 1;
+ }
+ }
+ }
+
+ if (result > 0)
+ {
+ str.Index += (maxMatchStrLen - 1);
+ return (true);
+ }
+ return false;
+ }
+
+ /*=================================MatchAbbreviatedDayName==================================
+ **Action: Parse the abbreviated day of week name from string starting at str.Index.
+ **Returns: A value from 0 to 6 indicating Sunday to Saturday.
+ **Arguments: str: a __DTString. The parsing will start from the
+ ** next character after str.Index.
+ **Exceptions: FormatException if a abbreviated day of week name can not be found.
+ ==============================================================================*/
+
+ private static bool MatchAbbreviatedDayName(ref __DTString str, DateTimeFormatInfo dtfi, ref int result)
+ {
+ int maxMatchStrLen = 0;
+ result = -1;
+ if (str.GetNext())
+ {
+ for (DayOfWeek i = DayOfWeek.Sunday; i <= DayOfWeek.Saturday; i++)
+ {
+ String searchStr = dtfi.GetAbbreviatedDayName(i);
+ int matchStrLen = searchStr.Length;
+ if (dtfi.HasSpacesInDayNames
+ ? str.MatchSpecifiedWords(searchStr, false, ref matchStrLen)
+ : str.MatchSpecifiedWord(searchStr))
+ {
+ if (matchStrLen > maxMatchStrLen)
+ {
+ maxMatchStrLen = matchStrLen;
+ result = (int)i;
+ }
+ }
+ }
+ }
+ if (result >= 0)
+ {
+ str.Index += maxMatchStrLen - 1;
+ return (true);
+ }
+ return false;
+ }
+
+ /*=================================MatchDayName==================================
+ **Action: Parse the day of week name from string starting at str.Index.
+ **Returns: A value from 0 to 6 indicating Sunday to Saturday.
+ **Arguments: str: a __DTString. The parsing will start from the
+ ** next character after str.Index.
+ **Exceptions: FormatException if a day of week name can not be found.
+ ==============================================================================*/
+
+ private static bool MatchDayName(ref __DTString str, DateTimeFormatInfo dtfi, ref int result)
+ {
+ // Turkish (tr-TR) got day names with the same prefix.
+ int maxMatchStrLen = 0;
+ result = -1;
+ if (str.GetNext())
+ {
+ for (DayOfWeek i = DayOfWeek.Sunday; i <= DayOfWeek.Saturday; i++)
+ {
+ String searchStr = dtfi.GetDayName(i);
+ int matchStrLen = searchStr.Length;
+ if (dtfi.HasSpacesInDayNames
+ ? str.MatchSpecifiedWords(searchStr, false, ref matchStrLen)
+ : str.MatchSpecifiedWord(searchStr))
+ {
+ if (matchStrLen > maxMatchStrLen)
+ {
+ maxMatchStrLen = matchStrLen;
+ result = (int)i;
+ }
+ }
+ }
+ }
+ if (result >= 0)
+ {
+ str.Index += maxMatchStrLen - 1;
+ return (true);
+ }
+ return false;
+ }
+
+ /*=================================MatchEraName==================================
+ **Action: Parse era name from string starting at str.Index.
+ **Returns: An era value.
+ **Arguments: str: a __DTString. The parsing will start from the
+ ** next character after str.Index.
+ **Exceptions: FormatException if an era name can not be found.
+ ==============================================================================*/
+
+ private static bool MatchEraName(ref __DTString str, DateTimeFormatInfo dtfi, ref int result)
+ {
+ if (str.GetNext())
+ {
+ int[] eras = dtfi.Calendar.Eras;
+
+ if (eras != null)
+ {
+ for (int i = 0; i < eras.Length; i++)
+ {
+ String searchStr = dtfi.GetEraName(eras[i]);
+ if (str.MatchSpecifiedWord(searchStr))
+ {
+ str.Index += (searchStr.Length - 1);
+ result = eras[i];
+ return (true);
+ }
+ searchStr = dtfi.GetAbbreviatedEraName(eras[i]);
+ if (str.MatchSpecifiedWord(searchStr))
+ {
+ str.Index += (searchStr.Length - 1);
+ result = eras[i];
+ return (true);
+ }
+ }
+ }
+ }
+ return false;
+ }
+
+ /*=================================MatchTimeMark==================================
+ **Action: Parse the time mark (AM/PM) from string starting at str.Index.
+ **Returns: TM_AM or TM_PM.
+ **Arguments: str: a __DTString. The parsing will start from the
+ ** next character after str.Index.
+ **Exceptions: FormatException if a time mark can not be found.
+ ==============================================================================*/
+
+ private static bool MatchTimeMark(ref __DTString str, DateTimeFormatInfo dtfi, ref TM result)
+ {
+ result = TM.NotSet;
+ // In some cultures have empty strings in AM/PM mark. E.g. af-ZA (0x0436), the AM mark is "", and PM mark is "nm".
+ if (dtfi.AMDesignator.Length == 0)
+ {
+ result = TM.AM;
+ }
+ if (dtfi.PMDesignator.Length == 0)
+ {
+ result = TM.PM;
+ }
+
+ if (str.GetNext())
+ {
+ String searchStr = dtfi.AMDesignator;
+ if (searchStr.Length > 0)
+ {
+ if (str.MatchSpecifiedWord(searchStr))
+ {
+ // Found an AM timemark with length > 0.
+ str.Index += (searchStr.Length - 1);
+ result = TM.AM;
+ return (true);
+ }
+ }
+ searchStr = dtfi.PMDesignator;
+ if (searchStr.Length > 0)
+ {
+ if (str.MatchSpecifiedWord(searchStr))
+ {
+ // Found a PM timemark with length > 0.
+ str.Index += (searchStr.Length - 1);
+ result = TM.PM;
+ return (true);
+ }
+ }
+ str.Index--; // Undo the GetNext call.
+ }
+ if (result != TM.NotSet)
+ {
+ // If one of the AM/PM marks is empty string, return the result.
+ return (true);
+ }
+ return false;
+ }
+
+ /*=================================MatchAbbreviatedTimeMark==================================
+ **Action: Parse the abbreviated time mark (AM/PM) from string starting at str.Index.
+ **Returns: TM_AM or TM_PM.
+ **Arguments: str: a __DTString. The parsing will start from the
+ ** next character after str.Index.
+ **Exceptions: FormatException if a abbreviated time mark can not be found.
+ ==============================================================================*/
+
+ private static bool MatchAbbreviatedTimeMark(ref __DTString str, DateTimeFormatInfo dtfi, ref TM result)
+ {
+ // NOTENOTE : the assumption here is that abbreviated time mark is the first
+ // character of the AM/PM designator. If this invariant changes, we have to
+ // change the code below.
+ if (str.GetNext())
+ {
+ if (str.GetChar() == dtfi.AMDesignator[0])
+ {
+ result = TM.AM;
+ return (true);
+ }
+ if (str.GetChar() == dtfi.PMDesignator[0])
+ {
+ result = TM.PM;
+ return (true);
+ }
+ }
+ return false;
+ }
+
+ /*=================================CheckNewValue==================================
+ **Action: Check if currentValue is initialized. If not, return the newValue.
+ ** If yes, check if the current value is equal to newValue. Return false
+ ** if they are not equal. This is used to check the case like "d" and "dd" are both
+ ** used to format a string.
+ **Returns: the correct value for currentValue.
+ **Arguments:
+ **Exceptions:
+ ==============================================================================*/
+
+ private static bool CheckNewValue(ref int currentValue, int newValue, char patternChar, ref DateTimeResult result)
+ {
+ if (currentValue == -1)
+ {
+ currentValue = newValue;
+ return (true);
+ }
+ else
+ {
+ if (newValue != currentValue)
+ {
+ result.SetFailure(ParseFailureKind.FormatWithParameter, "Format_RepeatDateTimePattern", patternChar);
+ return (false);
+ }
+ }
+ return (true);
+ }
+
+ private static DateTime GetDateTimeNow(ref DateTimeResult result, ref DateTimeStyles styles)
+ {
+ if ((result.flags & ParseFlags.CaptureOffset) != 0)
+ {
+ if ((result.flags & ParseFlags.TimeZoneUsed) != 0)
+ {
+ // use the supplied offset to calculate 'Now'
+ return new DateTime(DateTime.UtcNow.Ticks + result.timeZoneOffset.Ticks, DateTimeKind.Unspecified);
+ }
+ else if ((styles & DateTimeStyles.AssumeUniversal) != 0)
+ {
+ // assume the offset is Utc
+ return DateTime.UtcNow;
+ }
+ }
+
+ // assume the offset is Local
+ return DateTime.Now;
+ }
+
+ private static bool CheckDefaultDateTime(ref DateTimeResult result, ref Calendar cal, DateTimeStyles styles)
+ {
+ if ((result.flags & ParseFlags.CaptureOffset) != 0)
+ {
+ // DateTimeOffset.Parse should allow dates without a year, but only if there is also no time zone marker;
+ // e.g. "May 1 5pm" is OK, but "May 1 5pm -08:30" is not. This is somewhat pragmatic, since we would
+ // have to rearchitect parsing completely to allow this one case to correctly handle things like leap
+ // years and leap months. Is is an extremely corner case, and DateTime is basically incorrect in that
+ // case today.
+ //
+ // values like "11:00Z" or "11:00 -3:00" are also acceptable
+ //
+ // if ((month or day is set) and (year is not set and time zone is set))
+ //
+ if (((result.Month != -1) || (result.Day != -1))
+ && ((result.Year == -1 || ((result.flags & ParseFlags.YearDefault) != 0)) && (result.flags & ParseFlags.TimeZoneUsed) != 0))
+ {
+ result.SetFailure(ParseFailureKind.Format, "Format_MissingIncompleteDate", null);
+ return false;
+ }
+ }
+
+
+ if ((result.Year == -1) || (result.Month == -1) || (result.Day == -1))
+ {
+ /*
+ The following table describes the behaviors of getting the default value
+ when a certain year/month/day values are missing.
+
+ An "X" means that the value exists. And "--" means that value is missing.
+
+ Year Month Day => ResultYear ResultMonth ResultDay Note
+
+ X X X Parsed year Parsed month Parsed day
+ X X -- Parsed Year Parsed month First day If we have year and month, assume the first day of that month.
+ X -- X Parsed year First month Parsed day If the month is missing, assume first month of that year.
+ X -- -- Parsed year First month First day If we have only the year, assume the first day of that year.
+
+ -- X X CurrentYear Parsed month Parsed day If the year is missing, assume the current year.
+ -- X -- CurrentYear Parsed month First day If we have only a month value, assume the current year and current day.
+ -- -- X CurrentYear First month Parsed day If we have only a day value, assume current year and first month.
+ -- -- -- CurrentYear Current month Current day So this means that if the date string only contains time, you will get current date.
+
+ */
+
+ DateTime now = GetDateTimeNow(ref result, ref styles);
+ if (result.Month == -1 && result.Day == -1)
+ {
+ if (result.Year == -1)
+ {
+ if ((styles & DateTimeStyles.NoCurrentDateDefault) != 0)
+ {
+ // If there is no year/month/day values, and NoCurrentDateDefault flag is used,
+ // set the year/month/day value to the beginning year/month/day of DateTime().
+ // Note we should be using Gregorian for the year/month/day.
+ cal = GregorianCalendar.GetDefaultInstance();
+ result.Year = result.Month = result.Day = 1;
+ }
+ else
+ {
+ // Year/Month/Day are all missing.
+ result.Year = cal.GetYear(now);
+ result.Month = cal.GetMonth(now);
+ result.Day = cal.GetDayOfMonth(now);
+ }
+ }
+ else
+ {
+ // Month/Day are both missing.
+ result.Month = 1;
+ result.Day = 1;
+ }
+ }
+ else
+ {
+ if (result.Year == -1)
+ {
+ result.Year = cal.GetYear(now);
+ }
+ if (result.Month == -1)
+ {
+ result.Month = 1;
+ }
+ if (result.Day == -1)
+ {
+ result.Day = 1;
+ }
+ }
+ }
+ // Set Hour/Minute/Second to zero if these value are not in str.
+ if (result.Hour == -1) result.Hour = 0;
+ if (result.Minute == -1) result.Minute = 0;
+ if (result.Second == -1) result.Second = 0;
+ if (result.era == -1) result.era = Calendar.CurrentEra;
+ return true;
+ }
+
+ // Expand a pre-defined format string (like "D" for long date) to the real format that
+ // we are going to use in the date time parsing.
+ // This method also set the dtfi according/parseInfo to some special pre-defined
+ // formats.
+ //
+ private static String ExpandPredefinedFormat(String format, ref DateTimeFormatInfo dtfi, ref ParsingInfo parseInfo, ref DateTimeResult result)
+ {
+ //
+ // Check the format to see if we need to override the dtfi to be InvariantInfo,
+ // and see if we need to set up the userUniversalTime flag.
+ //
+ switch (format[0])
+ {
+ case 'o':
+ case 'O': // Round Trip Format
+ parseInfo.calendar = GregorianCalendar.GetDefaultInstance();
+ dtfi = DateTimeFormatInfo.InvariantInfo;
+ break;
+ case 'r':
+ case 'R': // RFC 1123 Standard. (in Universal time)
+ parseInfo.calendar = GregorianCalendar.GetDefaultInstance();
+ dtfi = DateTimeFormatInfo.InvariantInfo;
+
+ if ((result.flags & ParseFlags.CaptureOffset) != 0)
+ {
+ result.flags |= ParseFlags.Rfc1123Pattern;
+ }
+ break;
+ case 's': // Sortable format (in local time)
+ dtfi = DateTimeFormatInfo.InvariantInfo;
+ parseInfo.calendar = GregorianCalendar.GetDefaultInstance();
+ break;
+ case 'u': // Universal time format in sortable format.
+ parseInfo.calendar = GregorianCalendar.GetDefaultInstance();
+ dtfi = DateTimeFormatInfo.InvariantInfo;
+
+ if ((result.flags & ParseFlags.CaptureOffset) != 0)
+ {
+ result.flags |= ParseFlags.UtcSortPattern;
+ }
+ break;
+ case 'U': // Universal time format with culture-dependent format.
+ parseInfo.calendar = GregorianCalendar.GetDefaultInstance();
+ result.flags |= ParseFlags.TimeZoneUsed;
+ result.timeZoneOffset = new TimeSpan(0);
+ result.flags |= ParseFlags.TimeZoneUtc;
+ if (dtfi.Calendar.GetType() != typeof(GregorianCalendar))
+ {
+ dtfi = (DateTimeFormatInfo)dtfi.Clone();
+ dtfi.Calendar = GregorianCalendar.GetDefaultInstance();
+ }
+ break;
+ }
+
+ //
+ // Expand the pre-defined format character to the real format from DateTimeFormatInfo.
+ //
+ return (DateTimeFormat.GetRealFormat(format, dtfi));
+ }
+
+
+
+
+
+ // Given a specified format character, parse and update the parsing result.
+ //
+ private static bool ParseByFormat(
+ ref __DTString str,
+ ref __DTString format,
+ ref ParsingInfo parseInfo,
+ DateTimeFormatInfo dtfi,
+ ref DateTimeResult result)
+ {
+ int tokenLen = 0;
+ int tempYear = 0, tempMonth = 0, tempDay = 0, tempDayOfWeek = 0, tempHour = 0, tempMinute = 0, tempSecond = 0;
+ double tempFraction = 0;
+ TM tempTimeMark = 0;
+
+ char ch = format.GetChar();
+
+ switch (ch)
+ {
+ case 'y':
+ tokenLen = format.GetRepeatCount();
+ bool parseResult;
+ if (dtfi.HasForceTwoDigitYears)
+ {
+ parseResult = ParseDigits(ref str, 1, 4, out tempYear);
+ }
+ else
+ {
+ if (tokenLen <= 2)
+ {
+ parseInfo.fUseTwoDigitYear = true;
+ }
+ parseResult = ParseDigits(ref str, tokenLen, out tempYear);
+ }
+ if (!parseResult && parseInfo.fCustomNumberParser)
+ {
+ parseResult = parseInfo.parseNumberDelegate(ref str, tokenLen, out tempYear);
+ }
+ if (!parseResult)
+ {
+ result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
+ return (false);
+ }
+ if (!CheckNewValue(ref result.Year, tempYear, ch, ref result))
+ {
+ return (false);
+ }
+ break;
+ case 'M':
+ tokenLen = format.GetRepeatCount();
+ if (tokenLen <= 2)
+ {
+ if (!ParseDigits(ref str, tokenLen, out tempMonth))
+ {
+ if (!parseInfo.fCustomNumberParser ||
+ !parseInfo.parseNumberDelegate(ref str, tokenLen, out tempMonth))
+ {
+ result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
+ return (false);
+ }
+ }
+ }
+ else
+ {
+ if (tokenLen == 3)
+ {
+ if (!MatchAbbreviatedMonthName(ref str, dtfi, ref tempMonth))
+ {
+ result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
+ return (false);
+ }
+ }
+ else
+ {
+ if (!MatchMonthName(ref str, dtfi, ref tempMonth))
+ {
+ result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
+ return (false);
+ }
+ }
+ result.flags |= ParseFlags.ParsedMonthName;
+ }
+ if (!CheckNewValue(ref result.Month, tempMonth, ch, ref result))
+ {
+ return (false);
+ }
+ break;
+ case 'd':
+ // Day & Day of week
+ tokenLen = format.GetRepeatCount();
+ if (tokenLen <= 2)
+ {
+ // "d" & "dd"
+
+ if (!ParseDigits(ref str, tokenLen, out tempDay))
+ {
+ if (!parseInfo.fCustomNumberParser ||
+ !parseInfo.parseNumberDelegate(ref str, tokenLen, out tempDay))
+ {
+ result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
+ return (false);
+ }
+ }
+ if (!CheckNewValue(ref result.Day, tempDay, ch, ref result))
+ {
+ return (false);
+ }
+ }
+ else
+ {
+ if (tokenLen == 3)
+ {
+ // "ddd"
+ if (!MatchAbbreviatedDayName(ref str, dtfi, ref tempDayOfWeek))
+ {
+ result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
+ return (false);
+ }
+ }
+ else
+ {
+ // "dddd*"
+ if (!MatchDayName(ref str, dtfi, ref tempDayOfWeek))
+ {
+ result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
+ return (false);
+ }
+ }
+ if (!CheckNewValue(ref parseInfo.dayOfWeek, tempDayOfWeek, ch, ref result))
+ {
+ return (false);
+ }
+ }
+ break;
+ case 'g':
+ tokenLen = format.GetRepeatCount();
+ // Put the era value in result.era.
+ if (!MatchEraName(ref str, dtfi, ref result.era))
+ {
+ result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
+ return (false);
+ }
+ break;
+ case 'h':
+ parseInfo.fUseHour12 = true;
+ tokenLen = format.GetRepeatCount();
+ if (!ParseDigits(ref str, (tokenLen < 2 ? 1 : 2), out tempHour))
+ {
+ result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
+ return (false);
+ }
+ if (!CheckNewValue(ref result.Hour, tempHour, ch, ref result))
+ {
+ return (false);
+ }
+ break;
+ case 'H':
+ tokenLen = format.GetRepeatCount();
+ if (!ParseDigits(ref str, (tokenLen < 2 ? 1 : 2), out tempHour))
+ {
+ result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
+ return (false);
+ }
+ if (!CheckNewValue(ref result.Hour, tempHour, ch, ref result))
+ {
+ return (false);
+ }
+ break;
+ case 'm':
+ tokenLen = format.GetRepeatCount();
+ if (!ParseDigits(ref str, (tokenLen < 2 ? 1 : 2), out tempMinute))
+ {
+ result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
+ return (false);
+ }
+ if (!CheckNewValue(ref result.Minute, tempMinute, ch, ref result))
+ {
+ return (false);
+ }
+ break;
+ case 's':
+ tokenLen = format.GetRepeatCount();
+ if (!ParseDigits(ref str, (tokenLen < 2 ? 1 : 2), out tempSecond))
+ {
+ result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
+ return (false);
+ }
+ if (!CheckNewValue(ref result.Second, tempSecond, ch, ref result))
+ {
+ return (false);
+ }
+ break;
+ case 'f':
+ case 'F':
+ tokenLen = format.GetRepeatCount();
+ if (tokenLen <= DateTimeFormat.MaxSecondsFractionDigits)
+ {
+ if (!ParseFractionExact(ref str, tokenLen, ref tempFraction))
+ {
+ if (ch == 'f')
+ {
+ result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
+ return (false);
+ }
+ }
+ if (result.fraction < 0)
+ {
+ result.fraction = tempFraction;
+ }
+ else
+ {
+ if (tempFraction != result.fraction)
+ {
+ result.SetFailure(ParseFailureKind.FormatWithParameter, "Format_RepeatDateTimePattern", ch);
+ return (false);
+ }
+ }
+ }
+ else
+ {
+ result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
+ return (false);
+ }
+ break;
+ case 't':
+ // AM/PM designator
+ tokenLen = format.GetRepeatCount();
+ if (tokenLen == 1)
+ {
+ if (!MatchAbbreviatedTimeMark(ref str, dtfi, ref tempTimeMark))
+ {
+ result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
+ return (false);
+ }
+ }
+ else
+ {
+ if (!MatchTimeMark(ref str, dtfi, ref tempTimeMark))
+ {
+ result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
+ return (false);
+ }
+ }
+
+ if (parseInfo.timeMark == TM.NotSet)
+ {
+ parseInfo.timeMark = tempTimeMark;
+ }
+ else
+ {
+ if (parseInfo.timeMark != tempTimeMark)
+ {
+ result.SetFailure(ParseFailureKind.FormatWithParameter, "Format_RepeatDateTimePattern", ch);
+ return (false);
+ }
+ }
+ break;
+ case 'z':
+ // timezone offset
+ tokenLen = format.GetRepeatCount();
+ {
+ TimeSpan tempTimeZoneOffset = new TimeSpan(0);
+ if (!ParseTimeZoneOffset(ref str, tokenLen, ref tempTimeZoneOffset))
+ {
+ result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
+ return (false);
+ }
+ if ((result.flags & ParseFlags.TimeZoneUsed) != 0 && tempTimeZoneOffset != result.timeZoneOffset)
+ {
+ result.SetFailure(ParseFailureKind.FormatWithParameter, "Format_RepeatDateTimePattern", 'z');
+ return (false);
+ }
+ result.timeZoneOffset = tempTimeZoneOffset;
+ result.flags |= ParseFlags.TimeZoneUsed;
+ }
+ break;
+ case 'Z':
+ if ((result.flags & ParseFlags.TimeZoneUsed) != 0 && result.timeZoneOffset != TimeSpan.Zero)
+ {
+ result.SetFailure(ParseFailureKind.FormatWithParameter, "Format_RepeatDateTimePattern", 'Z');
+ return (false);
+ }
+
+ result.flags |= ParseFlags.TimeZoneUsed;
+ result.timeZoneOffset = new TimeSpan(0);
+ result.flags |= ParseFlags.TimeZoneUtc;
+
+ // The updating of the indexes is to reflect that ParseExact MatchXXX methods assume that
+ // they need to increment the index and Parse GetXXX do not. Since we are calling a Parse
+ // method from inside ParseExact we need to adjust this. Long term, we should try to
+ // eliminate this discrepancy.
+ str.Index++;
+ if (!GetTimeZoneName(ref str))
+ {
+ result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
+ return false;
+ }
+ str.Index--;
+ break;
+ case 'K':
+ // This should parse either as a blank, the 'Z' character or a local offset like "-07:00"
+ if (str.Match('Z'))
+ {
+ if ((result.flags & ParseFlags.TimeZoneUsed) != 0 && result.timeZoneOffset != TimeSpan.Zero)
+ {
+ result.SetFailure(ParseFailureKind.FormatWithParameter, "Format_RepeatDateTimePattern", 'K');
+ return (false);
+ }
+
+ result.flags |= ParseFlags.TimeZoneUsed;
+ result.timeZoneOffset = new TimeSpan(0);
+ result.flags |= ParseFlags.TimeZoneUtc;
+ }
+ else if (str.Match('+') || str.Match('-'))
+ {
+ str.Index--; // Put the character back for the parser
+ TimeSpan tempTimeZoneOffset = new TimeSpan(0);
+ if (!ParseTimeZoneOffset(ref str, 3, ref tempTimeZoneOffset))
+ {
+ result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
+ return (false);
+ }
+ if ((result.flags & ParseFlags.TimeZoneUsed) != 0 && tempTimeZoneOffset != result.timeZoneOffset)
+ {
+ result.SetFailure(ParseFailureKind.FormatWithParameter, "Format_RepeatDateTimePattern", 'K');
+ return (false);
+ }
+ result.timeZoneOffset = tempTimeZoneOffset;
+ result.flags |= ParseFlags.TimeZoneUsed;
+ }
+ // Otherwise it is unspecified and we consume no characters
+ break;
+ case ':':
+ // We match the separator in time pattern with the character in the time string if both equal to ':' or the date separator is matching the characters in the date string
+ // We have to exclude the case when the time separator is more than one character and starts with ':' something like "::" for instance.
+ if (((dtfi.TimeSeparator.Length > 1 && dtfi.TimeSeparator[0] == ':') || !str.Match(':')) &&
+ !str.Match(dtfi.TimeSeparator))
+ {
+ // A time separator is expected.
+ result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
+ return false;
+ }
+ break;
+ case '/':
+ // We match the separator in date pattern with the character in the date string if both equal to '/' or the date separator is matching the characters in the date string
+ // We have to exclude the case when the date separator is more than one character and starts with '/' something like "//" for instance.
+ if (((dtfi.DateSeparator.Length > 1 && dtfi.DateSeparator[0] == '/') || !str.Match('/')) &&
+ !str.Match(dtfi.DateSeparator))
+ {
+ // A date separator is expected.
+ result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
+ return false;
+ }
+ break;
+ case '\"':
+ case '\'':
+ StringBuilder enquotedString = new StringBuilder();
+ // Use ParseQuoteString so that we can handle escape characters within the quoted string.
+ if (!TryParseQuoteString(format.Value, format.Index, enquotedString, out tokenLen))
+ {
+ result.SetFailure(ParseFailureKind.FormatWithParameter, "Format_BadQuote", ch);
+ return (false);
+ }
+ format.Index += tokenLen - 1;
+
+ // Some cultures uses space in the quoted string. E.g. Spanish has long date format as:
+ // "dddd, dd' de 'MMMM' de 'yyyy". When inner spaces flag is set, we should skip whitespaces if there is space
+ // in the quoted string.
+ String quotedStr = enquotedString.ToString();
+
+ for (int i = 0; i < quotedStr.Length; i++)
+ {
+ if (quotedStr[i] == ' ' && parseInfo.fAllowInnerWhite)
+ {
+ str.SkipWhiteSpaces();
+ }
+ else if (!str.Match(quotedStr[i]))
+ {
+ // Can not find the matching quoted string.
+ result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
+ return false;
+ }
+ }
+
+ // The "r" and "u" formats incorrectly quoted 'GMT' and 'Z', respectively. We cannot
+ // correct this mistake for DateTime.ParseExact for compatibility reasons, but we can
+ // fix it for DateTimeOffset.ParseExact as DateTimeOffset has not been publically released
+ // with this issue.
+ if ((result.flags & ParseFlags.CaptureOffset) != 0)
+ {
+ if ((result.flags & ParseFlags.Rfc1123Pattern) != 0 && quotedStr == GMTName)
+ {
+ result.flags |= ParseFlags.TimeZoneUsed;
+ result.timeZoneOffset = TimeSpan.Zero;
+ }
+ else if ((result.flags & ParseFlags.UtcSortPattern) != 0 && quotedStr == ZuluName)
+ {
+ result.flags |= ParseFlags.TimeZoneUsed;
+ result.timeZoneOffset = TimeSpan.Zero;
+ }
+ }
+
+ break;
+ case '%':
+ // Skip this so we can get to the next pattern character.
+ // Used in case like "%d", "%y"
+
+ // Make sure the next character is not a '%' again.
+ if (format.Index >= format.Value.Length - 1 || format.Value[format.Index + 1] == '%')
+ {
+ result.SetFailure(ParseFailureKind.Format, "Format_BadFormatSpecifier", null);
+ return false;
+ }
+ break;
+ case '\\':
+ // Escape character. For example, "\d".
+ // Get the next character in format, and see if we can
+ // find a match in str.
+ if (format.GetNext())
+ {
+ if (!str.Match(format.GetChar()))
+ {
+ // Can not find a match for the escaped character.
+ result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
+ return false;
+ }
+ }
+ else
+ {
+ result.SetFailure(ParseFailureKind.Format, "Format_BadFormatSpecifier", null);
+ return false;
+ }
+ break;
+ case '.':
+ if (!str.Match(ch))
+ {
+ if (format.GetNext())
+ {
+ // If we encounter the pattern ".F", and the dot is not present, it is an optional
+ // second fraction and we can skip this format.
+ if (format.Match('F'))
+ {
+ format.GetRepeatCount();
+ break;
+ }
+ }
+ result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
+ return false;
+ }
+ break;
+ default:
+ if (ch == ' ')
+ {
+ if (parseInfo.fAllowInnerWhite)
+ {
+ // Skip whitespaces if AllowInnerWhite.
+ // Do nothing here.
+ }
+ else
+ {
+ if (!str.Match(ch))
+ {
+ // If the space does not match, and trailing space is allowed, we do
+ // one more step to see if the next format character can lead to
+ // successful parsing.
+ // This is used to deal with special case that a empty string can match
+ // a specific pattern.
+ // The example here is af-ZA, which has a time format like "hh:mm:ss tt". However,
+ // its AM symbol is "" (empty string). If fAllowTrailingWhite is used, and time is in
+ // the AM, we will trim the whitespaces at the end, which will lead to a failure
+ // when we are trying to match the space before "tt".
+ if (parseInfo.fAllowTrailingWhite)
+ {
+ if (format.GetNext())
+ {
+ if (ParseByFormat(ref str, ref format, ref parseInfo, dtfi, ref result))
+ {
+ return (true);
+ }
+ }
+ }
+ result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
+ return false;
+ }
+ // Found a macth.
+ }
+ }
+ else
+ {
+ if (format.MatchSpecifiedWord(GMTName))
+ {
+ format.Index += (GMTName.Length - 1);
+ // Found GMT string in format. This means the DateTime string
+ // is in GMT timezone.
+ result.flags |= ParseFlags.TimeZoneUsed;
+ result.timeZoneOffset = TimeSpan.Zero;
+ if (!str.Match(GMTName))
+ {
+ result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
+ return false;
+ }
+ }
+ else if (!str.Match(ch))
+ {
+ // ch is expected.
+ result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
+ return false;
+ }
+ }
+ break;
+ } // switch
+ return (true);
+ }
+
+ //
+ // The pos should point to a quote character. This method will
+ // get the string enclosed by the quote character.
+ //
+ internal static bool TryParseQuoteString(String format, int pos, StringBuilder result, out int returnValue)
+ {
+ //
+ // NOTE : pos will be the index of the quote character in the 'format' string.
+ //
+ returnValue = 0;
+ int formatLen = format.Length;
+ int beginPos = pos;
+ char quoteChar = format[pos++]; // Get the character used to quote the following string.
+
+ bool foundQuote = false;
+ while (pos < formatLen)
+ {
+ char ch = format[pos++];
+ if (ch == quoteChar)
+ {
+ foundQuote = true;
+ break;
+ }
+ else if (ch == '\\')
+ {
+ // The following are used to support escaped character.
+ // Escaped character is also supported in the quoted string.
+ // Therefore, someone can use a format like "'minute:' mm\"" to display:
+ // minute: 45"
+ // because the second double quote is escaped.
+ if (pos < formatLen)
+ {
+ result.Append(format[pos++]);
+ }
+ else
+ {
+ //
+ // This means that '\' is at the end of the formatting string.
+ //
+ return false;
+ }
+ }
+ else
+ {
+ result.Append(ch);
+ }
+ }
+
+ if (!foundQuote)
+ {
+ // Here we can't find the matching quote.
+ return false;
+ }
+
+ //
+ // Return the character count including the begin/end quote characters and enclosed string.
+ //
+ returnValue = (pos - beginPos);
+ return true;
+ }
+
+
+
+
+ /*=================================DoStrictParse==================================
+ **Action: Do DateTime parsing using the format in formatParam.
+ **Returns: The parsed DateTime.
+ **Arguments:
+ **Exceptions:
+ **
+ **Notes:
+ ** When the following general formats are used, InvariantInfo is used in dtfi:
+ ** 'r', 'R', 's'.
+ ** When the following general formats are used, the time is assumed to be in Universal time.
+ **
+ **Limitations:
+ ** Only GregarianCalendar is supported for now.
+ ** Only support GMT timezone.
+ ==============================================================================*/
+
+ private static bool DoStrictParse(
+ String s,
+ String formatParam,
+ DateTimeStyles styles,
+ DateTimeFormatInfo dtfi,
+ ref DateTimeResult result)
+ {
+ ParsingInfo parseInfo = new ParsingInfo();
+ parseInfo.Init();
+
+ parseInfo.calendar = dtfi.Calendar;
+ parseInfo.fAllowInnerWhite = ((styles & DateTimeStyles.AllowInnerWhite) != 0);
+ parseInfo.fAllowTrailingWhite = ((styles & DateTimeStyles.AllowTrailingWhite) != 0);
+
+ // We need the original values of the following two below.
+ String originalFormat = formatParam;
+
+ if (formatParam.Length == 1)
+ {
+ if (((result.flags & ParseFlags.CaptureOffset) != 0) && formatParam[0] == 'U')
+ {
+ // The 'U' format is not allowed for DateTimeOffset
+ result.SetFailure(ParseFailureKind.Format, "Format_BadFormatSpecifier", null);
+ return false;
+ }
+ formatParam = ExpandPredefinedFormat(formatParam, ref dtfi, ref parseInfo, ref result);
+ }
+
+ bool bTimeOnly = false;
+ result.calendar = parseInfo.calendar;
+
+ if (parseInfo.calendar.ID == CalendarId.HEBREW)
+ {
+ parseInfo.parseNumberDelegate = m_hebrewNumberParser;
+ parseInfo.fCustomNumberParser = true;
+ }
+
+ // Reset these values to negative one so that we could throw exception
+ // if we have parsed every item twice.
+ result.Hour = result.Minute = result.Second = -1;
+
+ __DTString format = new __DTString(formatParam, dtfi, false);
+ __DTString str = new __DTString(s, dtfi, false);
+
+ if (parseInfo.fAllowTrailingWhite)
+ {
+ // Trim trailing spaces if AllowTrailingWhite.
+ format.TrimTail();
+ format.RemoveTrailingInQuoteSpaces();
+ str.TrimTail();
+ }
+
+ if ((styles & DateTimeStyles.AllowLeadingWhite) != 0)
+ {
+ format.SkipWhiteSpaces();
+ format.RemoveLeadingInQuoteSpaces();
+ str.SkipWhiteSpaces();
+ }
+
+ //
+ // Scan every character in format and match the pattern in str.
+ //
+ while (format.GetNext())
+ {
+ // We trim inner spaces here, so that we will not eat trailing spaces when
+ // AllowTrailingWhite is not used.
+ if (parseInfo.fAllowInnerWhite)
+ {
+ str.SkipWhiteSpaces();
+ }
+ if (!ParseByFormat(ref str, ref format, ref parseInfo, dtfi, ref result))
+ {
+ return (false);
+ }
+ }
+
+ if (str.Index < str.Value.Length - 1)
+ {
+ // There are still remaining character in str.
+ result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
+ return false;
+ }
+
+ if (parseInfo.fUseTwoDigitYear && ((dtfi.FormatFlags & DateTimeFormatFlags.UseHebrewRule) == 0))
+ {
+ // A two digit year value is expected. Check if the parsed year value is valid.
+ if (result.Year >= 100)
+ {
+ result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
+ return false;
+ }
+ try
+ {
+ result.Year = parseInfo.calendar.ToFourDigitYear(result.Year);
+ }
+ catch (ArgumentOutOfRangeException e)
+ {
+ result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", e);
+ return false;
+ }
+ }
+
+ if (parseInfo.fUseHour12)
+ {
+ if (parseInfo.timeMark == TM.NotSet)
+ {
+ // hh is used, but no AM/PM designator is specified.
+ // Assume the time is AM.
+ // Don't throw exceptions in here becasue it is very confusing for the caller.
+ // I always got confused myself when I use "hh:mm:ss" to parse a time string,
+ // and ParseExact() throws on me (because I didn't use the 24-hour clock 'HH').
+ parseInfo.timeMark = TM.AM;
+ }
+ if (result.Hour > 12)
+ {
+ // AM/PM is used, but the value for HH is too big.
+ result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
+ return false;
+ }
+ if (parseInfo.timeMark == TM.AM)
+ {
+ if (result.Hour == 12)
+ {
+ result.Hour = 0;
+ }
+ }
+ else
+ {
+ result.Hour = (result.Hour == 12) ? 12 : result.Hour + 12;
+ }
+ }
+ else
+ {
+ // Military (24-hour time) mode
+ //
+ // AM cannot be set with a 24-hour time like 17:15.
+ // PM cannot be set with a 24-hour time like 03:15.
+ if ((parseInfo.timeMark == TM.AM && result.Hour >= 12)
+ || (parseInfo.timeMark == TM.PM && result.Hour < 12))
+ {
+ result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
+ return false;
+ }
+ }
+
+
+ // Check if the parased string only contains hour/minute/second values.
+ bTimeOnly = (result.Year == -1 && result.Month == -1 && result.Day == -1);
+ if (!CheckDefaultDateTime(ref result, ref parseInfo.calendar, styles))
+ {
+ return false;
+ }
+
+ if (!bTimeOnly && dtfi.HasYearMonthAdjustment)
+ {
+ if (!dtfi.YearMonthAdjustment(ref result.Year, ref result.Month, ((result.flags & ParseFlags.ParsedMonthName) != 0)))
+ {
+ result.SetFailure(ParseFailureKind.FormatBadDateTimeCalendar, "Format_BadDateTimeCalendar", null);
+ return false;
+ }
+ }
+ if (!parseInfo.calendar.TryToDateTime(result.Year, result.Month, result.Day,
+ result.Hour, result.Minute, result.Second, 0, result.era, out result.parsedDate))
+ {
+ result.SetFailure(ParseFailureKind.FormatBadDateTimeCalendar, "Format_BadDateTimeCalendar", null);
+ return false;
+ }
+ if (result.fraction > 0)
+ {
+ result.parsedDate = result.parsedDate.AddTicks((long)Math.Round(result.fraction * Calendar.TicksPerSecond));
+ }
+
+ //
+ // We have to check day of week before we adjust to the time zone.
+ // It is because the value of day of week may change after adjusting
+ // to the time zone.
+ //
+ if (parseInfo.dayOfWeek != -1)
+ {
+ //
+ // Check if day of week is correct.
+ //
+ if (parseInfo.dayOfWeek != (int)parseInfo.calendar.GetDayOfWeek(result.parsedDate))
+ {
+ result.SetFailure(ParseFailureKind.Format, "Format_BadDayOfWeek", null);
+ return false;
+ }
+ }
+
+
+ if (!DetermineTimeZoneAdjustments(ref result, styles, bTimeOnly))
+ {
+ return false;
+ }
+ return true;
+ }
+
+ private static Exception GetDateTimeParseException(ref DateTimeResult result)
+ {
+ switch (result.failure)
+ {
+ case ParseFailureKind.ArgumentNull:
+ return new ArgumentNullException(result.failureArgumentName, SR.GetResourceString(result.failureMessageID));
+ case ParseFailureKind.Format:
+ return new FormatException(SR.GetResourceString(result.failureMessageID));
+ case ParseFailureKind.FormatWithParameter:
+ return new FormatException(SR.Format(SR.GetResourceString(result.failureMessageID), result.failureMessageFormatArgument));
+ case ParseFailureKind.FormatBadDateTimeCalendar:
+ return new FormatException(SR.Format(SR.GetResourceString(result.failureMessageID), result.calendar));
+ default:
+ Debug.Assert(false, "Unkown DateTimeParseFailure: " + result);
+ return null;
+ }
+ }
+
+ // 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
+ [Pure]
+ [Conditional("_LOGGING")]
+ internal static void LexTraceExit(string message, DS dps)
+ {
+#if _LOGGING
+ if (!_tracingEnabled)
+ return;
+ BCLDebug.Trace("DATETIME", "[DATETIME] Lex return {0}, DS.{1}", message, dps);
+#endif // _LOGGING
+ }
+ [Pure]
+ [Conditional("_LOGGING")]
+ internal static void PTSTraceExit(DS dps, bool passed)
+ {
+#if _LOGGING
+ if (!_tracingEnabled)
+ return;
+ BCLDebug.Trace("DATETIME", "[DATETIME] ProcessTerminalState {0} @ DS.{1}", passed ? "passed" : "failed", dps);
+#endif // _LOGGING
+ }
+ [Pure]
+ [Conditional("_LOGGING")]
+ internal static void TPTraceExit(string message, DS dps)
+ {
+#if _LOGGING
+ if (!_tracingEnabled)
+ return;
+ BCLDebug.Trace("DATETIME", "[DATETIME] TryParse return {0}, DS.{1}", message, dps);
+#endif // _LOGGING
+ }
+ [Pure]
+ [Conditional("_LOGGING")]
+ internal static void DTFITrace(DateTimeFormatInfo dtfi)
+ {
+#if _LOGGING
+ if (!_tracingEnabled)
+ return;
+
+ BCLDebug.Trace("DATETIME", "[DATETIME] DateTimeFormatInfo Properties");
+#if !FEATURE_COREFX_GLOBALIZATION
+ BCLDebug.Trace("DATETIME", " NativeCalendarName {0}", Hex(dtfi.NativeCalendarName));
+#endif
+ BCLDebug.Trace("DATETIME", " AMDesignator {0}", Hex(dtfi.AMDesignator));
+ BCLDebug.Trace("DATETIME", " PMDesignator {0}", Hex(dtfi.PMDesignator));
+ BCLDebug.Trace("DATETIME", " TimeSeparator {0}", Hex(dtfi.TimeSeparator));
+ BCLDebug.Trace("DATETIME", " AbbrvDayNames {0}", Hex(dtfi.AbbreviatedDayNames));
+ BCLDebug.Trace("DATETIME", " ShortestDayNames {0}", Hex(dtfi.ShortestDayNames));
+ BCLDebug.Trace("DATETIME", " DayNames {0}", Hex(dtfi.DayNames));
+ BCLDebug.Trace("DATETIME", " AbbrvMonthNames {0}", Hex(dtfi.AbbreviatedMonthNames));
+ BCLDebug.Trace("DATETIME", " MonthNames {0}", Hex(dtfi.MonthNames));
+ BCLDebug.Trace("DATETIME", " AbbrvMonthGenNames {0}", Hex(dtfi.AbbreviatedMonthGenitiveNames));
+ BCLDebug.Trace("DATETIME", " MonthGenNames {0}", Hex(dtfi.MonthGenitiveNames));
+#endif // _LOGGING
+ }
+#if _LOGGING
+ [Pure]
+ // return a string in the form: "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"
+ internal static string Hex(string[] strs)
+ {
+ if (strs == null || strs.Length == 0)
+ return String.Empty;
+ if (strs.Length == 1)
+ return Hex(strs[0]);
+
+ int curLineLength = 0;
+ int maxLineLength = 55;
+ int newLinePadding = 20;
+
+
+ //invariant: strs.Length >= 2
+ StringBuilder buffer = new StringBuilder();
+ buffer.Append(Hex(strs[0]));
+ curLineLength = buffer.Length;
+ String s;
+
+ for (int i = 1; i < strs.Length - 1; i++)
+ {
+ s = Hex(strs[i]);
+
+ if (s.Length > maxLineLength || (curLineLength + s.Length + 2) > maxLineLength)
+ {
+ buffer.Append(',');
+ buffer.Append(Environment.NewLine);
+ buffer.Append(' ', newLinePadding);
+ curLineLength = 0;
+ }
+ else
+ {
+ buffer.Append(", ");
+ curLineLength += 2;
+ }
+ buffer.Append(s);
+ curLineLength += s.Length;
+ }
+
+ buffer.Append(',');
+ s = Hex(strs[strs.Length - 1]);
+ if (s.Length > maxLineLength || (curLineLength + s.Length + 6) > maxLineLength)
+ {
+ buffer.Append(Environment.NewLine);
+ buffer.Append(' ', newLinePadding);
+ }
+ else
+ {
+ buffer.Append(' ');
+ }
+ buffer.Append(s);
+ return buffer.ToString();
+ }
+ [Pure]
+ // return a string in the form: "Sun"
+ internal static string Hex(string str)
+ {
+ StringBuilder buffer = new StringBuilder();
+ buffer.Append("\"");
+ for (int i = 0; i < str.Length; i++)
+ {
+ if (str[i] <= '\x007f')
+ buffer.Append(str[i]);
+ else
+ buffer.Append("\\u" + ((int)str[i]).ToString("x4", CultureInfo.InvariantCulture));
+ }
+ buffer.Append("\"");
+ return buffer.ToString();
+ }
+ [Pure]
+ // return an unicode escaped string form of char c
+ internal static String Hex(char c)
+ {
+ if (c <= '\x007f')
+ return c.ToString(CultureInfo.InvariantCulture);
+ else
+ return "\\u" + ((int)c).ToString("x4", CultureInfo.InvariantCulture);
+ }
+
+ internal static bool _tracingEnabled = BCLDebug.CheckEnabled("DATETIME");
+#endif // _LOGGING
+ }
+
+
+ //
+ // This is a string parsing helper which wraps a String object.
+ // It has a Index property which tracks
+ // the current parsing pointer of the string.
+ //
+ internal
+ struct __DTString
+ {
+ //
+ // Value propery: stores the real string to be parsed.
+ //
+ internal String Value;
+
+ //
+ // Index property: points to the character that we are currently parsing.
+ //
+ internal int Index;
+
+ // The length of Value string.
+ internal int len;
+
+ // The current chracter to be looked at.
+ internal char m_current;
+
+ private CompareInfo m_info;
+ // Flag to indicate if we encouter an digit, we should check for token or not.
+ // In some cultures, such as mn-MN, it uses "\x0031\x00a0\x0434\x04af\x0433\x044d\x044d\x0440\x00a0\x0441\x0430\x0440" in month names.
+ private bool m_checkDigitToken;
+
+ internal __DTString(String str, DateTimeFormatInfo dtfi, bool checkDigitToken) : this(str, dtfi)
+ {
+ m_checkDigitToken = checkDigitToken;
+ }
+
+ internal __DTString(String str, DateTimeFormatInfo dtfi)
+ {
+ Index = -1;
+ Value = str;
+ len = Value.Length;
+
+ m_current = '\0';
+ if (dtfi != null)
+ {
+ m_info = dtfi.CompareInfo;
+ m_checkDigitToken = ((dtfi.FormatFlags & DateTimeFormatFlags.UseDigitPrefixInTokens) != 0);
+ }
+ else
+ {
+ m_info = CultureInfo.CurrentCulture.CompareInfo;
+ m_checkDigitToken = false;
+ }
+ }
+
+ internal CompareInfo CompareInfo
+ {
+ get { return m_info; }
+ }
+
+ //
+ // Advance the Index.
+ // Return true if Index is NOT at the end of the string.
+ //
+ // Typical usage:
+ // while (str.GetNext())
+ // {
+ // char ch = str.GetChar()
+ // }
+ internal bool GetNext()
+ {
+ Index++;
+ if (Index < len)
+ {
+ m_current = Value[Index];
+ return (true);
+ }
+ return (false);
+ }
+
+ internal bool AtEnd()
+ {
+ return Index < len ? false : true;
+ }
+
+ internal bool Advance(int count)
+ {
+ Debug.Assert(Index + count <= len, "__DTString::Advance: Index + count <= len");
+ Index += count;
+ if (Index < len)
+ {
+ m_current = Value[Index];
+ return (true);
+ }
+ return (false);
+ }
+
+
+ // Used by DateTime.Parse() to get the next token.
+ internal void GetRegularToken(out TokenType tokenType, out int tokenValue, DateTimeFormatInfo dtfi)
+ {
+ tokenValue = 0;
+ if (Index >= len)
+ {
+ tokenType = TokenType.EndOfString;
+ return;
+ }
+
+ tokenType = TokenType.UnknownToken;
+
+ Start:
+ if (DateTimeParse.IsDigit(m_current))
+ {
+ // This is a digit.
+ tokenValue = m_current - '0';
+ int value;
+ int start = Index;
+
+ //
+ // Collect other digits.
+ //
+ while (++Index < len)
+ {
+ m_current = Value[Index];
+ value = m_current - '0';
+ if (value >= 0 && value <= 9)
+ {
+ tokenValue = tokenValue * 10 + value;
+ }
+ else
+ {
+ break;
+ }
+ }
+ if (Index - start > DateTimeParse.MaxDateTimeNumberDigits)
+ {
+ tokenType = TokenType.NumberToken;
+ tokenValue = -1;
+ }
+ else if (Index - start < 3)
+ {
+ tokenType = TokenType.NumberToken;
+ }
+ else
+ {
+ // If there are more than 3 digits, assume that it's a year value.
+ tokenType = TokenType.YearNumberToken;
+ }
+ if (m_checkDigitToken)
+ {
+ int save = Index;
+ char saveCh = m_current;
+ // Re-scan using the staring Index to see if this is a token.
+ Index = start; // To include the first digit.
+ m_current = Value[Index];
+ TokenType tempType;
+ int tempValue;
+ // This DTFI has tokens starting with digits.
+ // E.g. mn-MN has month name like "\x0031\x00a0\x0434\x04af\x0433\x044d\x044d\x0440\x00a0\x0441\x0430\x0440"
+ if (dtfi.Tokenize(TokenType.RegularTokenMask, out tempType, out tempValue, ref this))
+ {
+ tokenType = tempType;
+ tokenValue = tempValue;
+ // This is a token, so the Index has been advanced propertly in DTFI.Tokenizer().
+ }
+ else
+ {
+ // Use the number token value.
+ // Restore the index.
+ Index = save;
+ m_current = saveCh;
+ }
+ }
+ }
+ else if (Char.IsWhiteSpace(m_current))
+ {
+ // Just skip to the next character.
+ while (++Index < len)
+ {
+ m_current = Value[Index];
+ if (!(Char.IsWhiteSpace(m_current)))
+ {
+ goto Start;
+ }
+ }
+ // We have reached the end of string.
+ tokenType = TokenType.EndOfString;
+ }
+ else
+ {
+ dtfi.Tokenize(TokenType.RegularTokenMask, out tokenType, out tokenValue, ref this);
+ }
+ }
+
+ internal TokenType GetSeparatorToken(DateTimeFormatInfo dtfi, out int indexBeforeSeparator, out char charBeforeSeparator)
+ {
+ indexBeforeSeparator = Index;
+ charBeforeSeparator = m_current;
+ TokenType tokenType;
+ if (!SkipWhiteSpaceCurrent())
+ {
+ // Reach the end of the string.
+ return (TokenType.SEP_End);
+ }
+ if (!DateTimeParse.IsDigit(m_current))
+ {
+ // Not a digit. Tokenize it.
+ int tokenValue;
+ bool found = dtfi.Tokenize(TokenType.SeparatorTokenMask, out tokenType, out tokenValue, ref this);
+ if (!found)
+ {
+ tokenType = TokenType.SEP_Space;
+ }
+ }
+ else
+ {
+ // Do nothing here. If we see a number, it will not be a separator. There is no need wasting time trying to find the
+ // separator token.
+ tokenType = TokenType.SEP_Space;
+ }
+ return (tokenType);
+ }
+
+ internal bool MatchSpecifiedWord(String target)
+ {
+ return MatchSpecifiedWord(target, target.Length + Index);
+ }
+
+ internal bool MatchSpecifiedWord(String target, int endIndex)
+ {
+ int count = endIndex - Index;
+
+ if (count != target.Length)
+ {
+ return false;
+ }
+
+ if (Index + count > len)
+ {
+ return false;
+ }
+
+ return (m_info.Compare(Value, Index, count, target, 0, count, CompareOptions.IgnoreCase) == 0);
+ }
+
+ private static Char[] WhiteSpaceChecks = new Char[] { ' ', '\u00A0' };
+
+ internal bool MatchSpecifiedWords(String target, bool checkWordBoundary, ref int matchLength)
+ {
+ int valueRemaining = Value.Length - Index;
+ matchLength = target.Length;
+
+ if (matchLength > valueRemaining || m_info.Compare(Value, Index, matchLength, target, 0, matchLength, CompareOptions.IgnoreCase) != 0)
+ {
+ // Check word by word
+ int targetPosition = 0; // Where we are in the target string
+ int thisPosition = Index; // Where we are in this string
+ int wsIndex = target.IndexOfAny(WhiteSpaceChecks, targetPosition);
+ if (wsIndex == -1)
+ {
+ return false;
+ }
+ do
+ {
+ int segmentLength = wsIndex - targetPosition;
+ if (thisPosition >= Value.Length - segmentLength)
+ { // Subtraction to prevent overflow.
+ return false;
+ }
+ if (segmentLength == 0)
+ {
+ // If segmentLength == 0, it means that we have leading space in the target string.
+ // In that case, skip the leading spaces in the target and this string.
+ matchLength--;
+ }
+ else
+ {
+ // Make sure we also have whitespace in the input string
+ if (!Char.IsWhiteSpace(Value[thisPosition + segmentLength]))
+ {
+ return false;
+ }
+ if (m_info.Compare(Value, thisPosition, segmentLength, target, targetPosition, segmentLength, CompareOptions.IgnoreCase) != 0)
+ {
+ return false;
+ }
+ // Advance the input string
+ thisPosition = thisPosition + segmentLength + 1;
+ }
+ // Advance our target string
+ targetPosition = wsIndex + 1;
+
+
+ // Skip past multiple whitespace
+ while (thisPosition < Value.Length && Char.IsWhiteSpace(Value[thisPosition]))
+ {
+ thisPosition++;
+ matchLength++;
+ }
+ } while ((wsIndex = target.IndexOfAny(WhiteSpaceChecks, targetPosition)) >= 0);
+ // now check the last segment;
+ if (targetPosition < target.Length)
+ {
+ int segmentLength = target.Length - targetPosition;
+ if (thisPosition > Value.Length - segmentLength)
+ {
+ return false;
+ }
+ if (m_info.Compare(Value, thisPosition, segmentLength, target, targetPosition, segmentLength, CompareOptions.IgnoreCase) != 0)
+ {
+ return false;
+ }
+ }
+ }
+
+ if (checkWordBoundary)
+ {
+ int nextCharIndex = Index + matchLength;
+ if (nextCharIndex < Value.Length)
+ {
+ if (Char.IsLetter(Value[nextCharIndex]))
+ {
+ return (false);
+ }
+ }
+ }
+ return (true);
+ }
+
+ //
+ // Check to see if the string starting from Index is a prefix of
+ // str.
+ // If a match is found, true value is returned and Index is updated to the next character to be parsed.
+ // Otherwise, Index is unchanged.
+ //
+ internal bool Match(String str)
+ {
+ if (++Index >= len)
+ {
+ return (false);
+ }
+
+ if (str.Length > (Value.Length - Index))
+ {
+ return false;
+ }
+
+ if (m_info.Compare(Value, Index, str.Length, str, 0, str.Length, CompareOptions.Ordinal) == 0)
+ {
+ // Update the Index to the end of the matching string.
+ // So the following GetNext()/Match() opeartion will get
+ // the next character to be parsed.
+ Index += (str.Length - 1);
+ return (true);
+ }
+ return (false);
+ }
+
+ internal bool Match(char ch)
+ {
+ if (++Index >= len)
+ {
+ return (false);
+ }
+ if (Value[Index] == ch)
+ {
+ m_current = ch;
+ return (true);
+ }
+ Index--;
+ return (false);
+ }
+
+ //
+ // Actions: From the current position, try matching the longest word in the specified string array.
+ // E.g. words[] = {"AB", "ABC", "ABCD"}, if the current position points to a substring like "ABC DEF",
+ // MatchLongestWords(words, ref MaxMatchStrLen) will return 1 (the index), and maxMatchLen will be 3.
+ // Returns:
+ // The index that contains the longest word to match
+ // Arguments:
+ // words The string array that contains words to search.
+ // maxMatchStrLen [in/out] the initailized maximum length. This parameter can be used to
+ // find the longest match in two string arrays.
+ //
+ internal int MatchLongestWords(String[] words, ref int maxMatchStrLen)
+ {
+ int result = -1;
+ for (int i = 0; i < words.Length; i++)
+ {
+ String word = words[i];
+ int matchLength = word.Length;
+ if (MatchSpecifiedWords(word, false, ref matchLength))
+ {
+ if (matchLength > maxMatchStrLen)
+ {
+ maxMatchStrLen = matchLength;
+ result = i;
+ }
+ }
+ }
+
+ return (result);
+ }
+
+ //
+ // Get the number of repeat character after the current character.
+ // For a string "hh:mm:ss" at Index of 3. GetRepeatCount() = 2, and Index
+ // will point to the second ':'.
+ //
+ internal int GetRepeatCount()
+ {
+ char repeatChar = Value[Index];
+ int pos = Index + 1;
+ while ((pos < len) && (Value[pos] == repeatChar))
+ {
+ pos++;
+ }
+ int repeatCount = (pos - Index);
+ // Update the Index to the end of the repeated characters.
+ // So the following GetNext() opeartion will get
+ // the next character to be parsed.
+ Index = pos - 1;
+ return (repeatCount);
+ }
+
+ // Return false when end of string is encountered or a non-digit character is found.
+ internal bool GetNextDigit()
+ {
+ if (++Index >= len)
+ {
+ return (false);
+ }
+ return (DateTimeParse.IsDigit(Value[Index]));
+ }
+
+ //
+ // Get the current character.
+ //
+ internal char GetChar()
+ {
+ Debug.Assert(Index >= 0 && Index < len, "Index >= 0 && Index < len");
+ return (Value[Index]);
+ }
+
+ //
+ // Convert the current character to a digit, and return it.
+ //
+ internal int GetDigit()
+ {
+ Debug.Assert(Index >= 0 && Index < len, "Index >= 0 && Index < len");
+ Debug.Assert(DateTimeParse.IsDigit(Value[Index]), "IsDigit(Value[Index])");
+ return (Value[Index] - '0');
+ }
+
+ //
+ // Eat White Space ahead of the current position
+ //
+ // Return false if end of string is encountered.
+ //
+ internal void SkipWhiteSpaces()
+ {
+ // Look ahead to see if the next character
+ // is a whitespace.
+ while (Index + 1 < len)
+ {
+ char ch = Value[Index + 1];
+ if (!Char.IsWhiteSpace(ch))
+ {
+ return;
+ }
+ Index++;
+ }
+ return;
+ }
+
+ //
+ // Skip white spaces from the current position
+ //
+ // Return false if end of string is encountered.
+ //
+ internal bool SkipWhiteSpaceCurrent()
+ {
+ if (Index >= len)
+ {
+ return (false);
+ }
+
+ if (!Char.IsWhiteSpace(m_current))
+ {
+ return (true);
+ }
+
+ while (++Index < len)
+ {
+ m_current = Value[Index];
+ if (!Char.IsWhiteSpace(m_current))
+ {
+ return (true);
+ }
+ // Nothing here.
+ }
+ return (false);
+ }
+
+ internal void TrimTail()
+ {
+ int i = len - 1;
+ while (i >= 0 && Char.IsWhiteSpace(Value[i]))
+ {
+ i--;
+ }
+ Value = Value.Substring(0, i + 1);
+ len = Value.Length;
+ }
+
+ // Trim the trailing spaces within a quoted string.
+ // Call this after TrimTail() is done.
+ internal void RemoveTrailingInQuoteSpaces()
+ {
+ int i = len - 1;
+ if (i <= 1)
+ {
+ return;
+ }
+ char ch = Value[i];
+ // Check if the last character is a quote.
+ if (ch == '\'' || ch == '\"')
+ {
+ if (Char.IsWhiteSpace(Value[i - 1]))
+ {
+ i--;
+ while (i >= 1 && Char.IsWhiteSpace(Value[i - 1]))
+ {
+ i--;
+ }
+ Value = Value.Remove(i, Value.Length - 1 - i);
+ len = Value.Length;
+ }
+ }
+ }
+
+ // Trim the leading spaces within a quoted string.
+ // Call this after the leading spaces before quoted string are trimmed.
+ internal void RemoveLeadingInQuoteSpaces()
+ {
+ if (len <= 2)
+ {
+ return;
+ }
+ int i = 0;
+ char ch = Value[i];
+ // Check if the last character is a quote.
+ if (ch == '\'' || ch == '\"')
+ {
+ while ((i + 1) < len && Char.IsWhiteSpace(Value[i + 1]))
+ {
+ i++;
+ }
+ if (i != 0)
+ {
+ Value = Value.Remove(1, i);
+ len = Value.Length;
+ }
+ }
+ }
+
+ internal DTSubString GetSubString()
+ {
+ DTSubString sub = new DTSubString();
+ sub.index = Index;
+ sub.s = Value;
+ while (Index + sub.length < len)
+ {
+ DTSubStringType currentType;
+ Char ch = Value[Index + sub.length];
+ if (ch >= '0' && ch <= '9')
+ {
+ currentType = DTSubStringType.Number;
+ }
+ else
+ {
+ currentType = DTSubStringType.Other;
+ }
+
+ if (sub.length == 0)
+ {
+ sub.type = currentType;
+ }
+ else
+ {
+ if (sub.type != currentType)
+ {
+ break;
+ }
+ }
+ sub.length++;
+ if (currentType == DTSubStringType.Number)
+ {
+ // Incorporate the number into the value
+ // Limit the digits to prevent overflow
+ if (sub.length > DateTimeParse.MaxDateTimeNumberDigits)
+ {
+ sub.type = DTSubStringType.Invalid;
+ return sub;
+ }
+ int number = ch - '0';
+ Debug.Assert(number >= 0 && number <= 9, "number >= 0 && number <= 9");
+ sub.value = sub.value * 10 + number;
+ }
+ else
+ {
+ // For non numbers, just return this length 1 token. This should be expanded
+ // to more types of thing if this parsing approach is used for things other
+ // than numbers and single characters
+ break;
+ }
+ }
+ if (sub.length == 0)
+ {
+ sub.type = DTSubStringType.End;
+ return sub;
+ }
+
+ return sub;
+ }
+
+ internal void ConsumeSubString(DTSubString sub)
+ {
+ Debug.Assert(sub.index == Index, "sub.index == Index");
+ Debug.Assert(sub.index + sub.length <= len, "sub.index + sub.length <= len");
+ Index = sub.index + sub.length;
+ if (Index < len)
+ {
+ m_current = Value[Index];
+ }
+ }
+ }
+
+ internal enum DTSubStringType
+ {
+ Unknown = 0,
+ Invalid = 1,
+ Number = 2,
+ End = 3,
+ Other = 4,
+ }
+
+ internal struct DTSubString
+ {
+ internal String s;
+ internal Int32 index;
+ internal Int32 length;
+ internal DTSubStringType type;
+ internal Int32 value;
+
+ internal Char this[Int32 relativeIndex]
+ {
+ get
+ {
+ return s[index + relativeIndex];
+ }
+ }
+ }
+
+ //
+ // The buffer to store the parsing token.
+ //
+ internal
+ struct DateTimeToken
+ {
+ internal DateTimeParse.DTT dtt; // Store the token
+ internal TokenType suffix; // Store the CJK Year/Month/Day suffix (if any)
+ internal int num; // Store the number that we are parsing (if any)
+ }
+
+ //
+ // The buffer to store temporary parsing information.
+ //
+ internal
+ unsafe struct DateTimeRawInfo
+ {
+ private int* num;
+ internal int numCount;
+ internal int month;
+ internal int year;
+ internal int dayOfWeek;
+ internal int era;
+ internal DateTimeParse.TM timeMark;
+ internal double fraction;
+ internal bool hasSameDateAndTimeSeparators;
+
+ internal void Init(int* numberBuffer)
+ {
+ month = -1;
+ year = -1;
+ dayOfWeek = -1;
+ era = -1;
+ timeMark = DateTimeParse.TM.NotSet;
+ fraction = -1;
+ num = numberBuffer;
+ }
+ internal unsafe void AddNumber(int value)
+ {
+ num[numCount++] = value;
+ }
+ internal unsafe int GetNumber(int index)
+ {
+ return num[index];
+ }
+ }
+
+ internal enum ParseFailureKind
+ {
+ None = 0,
+ ArgumentNull = 1,
+ Format = 2,
+ FormatWithParameter = 3,
+ FormatBadDateTimeCalendar = 4, // FormatException when ArgumentOutOfRange is thrown by a Calendar.TryToDateTime().
+ };
+
+ [Flags]
+ internal enum ParseFlags
+ {
+ HaveYear = 0x00000001,
+ HaveMonth = 0x00000002,
+ HaveDay = 0x00000004,
+ HaveHour = 0x00000008,
+ HaveMinute = 0x00000010,
+ HaveSecond = 0x00000020,
+ HaveTime = 0x00000040,
+ HaveDate = 0x00000080,
+ TimeZoneUsed = 0x00000100,
+ TimeZoneUtc = 0x00000200,
+ ParsedMonthName = 0x00000400,
+ CaptureOffset = 0x00000800,
+ YearDefault = 0x00001000,
+ Rfc1123Pattern = 0x00002000,
+ UtcSortPattern = 0x00004000,
+ }
+
+ //
+ // This will store the result of the parsing. And it will be eventually
+ // used to construct a DateTime instance.
+ //
+ internal
+ struct DateTimeResult
+ {
+ internal int Year;
+ internal int Month;
+ internal int Day;
+ //
+ // Set time defualt to 00:00:00.
+ //
+ internal int Hour;
+ internal int Minute;
+ internal int Second;
+ internal double fraction;
+
+ internal int era;
+
+ internal ParseFlags flags;
+
+ internal TimeSpan timeZoneOffset;
+
+ internal Calendar calendar;
+
+ internal DateTime parsedDate;
+
+ internal ParseFailureKind failure;
+ internal string failureMessageID;
+ internal object failureMessageFormatArgument;
+ internal string failureArgumentName;
+
+ internal void Init()
+ {
+ Year = -1;
+ Month = -1;
+ Day = -1;
+ fraction = -1;
+ era = -1;
+ }
+
+ internal void SetDate(int year, int month, int day)
+ {
+ Year = year;
+ Month = month;
+ Day = day;
+ }
+ internal void SetFailure(ParseFailureKind failure, string failureMessageID, object failureMessageFormatArgument)
+ {
+ this.failure = failure;
+ this.failureMessageID = failureMessageID;
+ this.failureMessageFormatArgument = failureMessageFormatArgument;
+ }
+
+ internal void SetFailure(ParseFailureKind failure, string failureMessageID, object failureMessageFormatArgument, string failureArgumentName)
+ {
+ this.failure = failure;
+ this.failureMessageID = failureMessageID;
+ this.failureMessageFormatArgument = failureMessageFormatArgument;
+ this.failureArgumentName = failureArgumentName;
+ }
+ }
+
+ // This is the helper data structure used in ParseExact().
+ internal struct ParsingInfo
+ {
+ internal Calendar calendar;
+ internal int dayOfWeek;
+ internal DateTimeParse.TM timeMark;
+
+ internal bool fUseHour12;
+ internal bool fUseTwoDigitYear;
+ internal bool fAllowInnerWhite;
+ internal bool fAllowTrailingWhite;
+ internal bool fCustomNumberParser;
+ internal DateTimeParse.MatchNumberDelegate parseNumberDelegate;
+
+ internal void Init()
+ {
+ dayOfWeek = -1;
+ timeMark = DateTimeParse.TM.NotSet;
+ }
+ }
+
+ //
+ // The type of token that will be returned by DateTimeFormatInfo.Tokenize().
+ //
+ internal enum TokenType
+ {
+ // The valid token should start from 1.
+
+ // Regular tokens. The range is from 0x00 ~ 0xff.
+ NumberToken = 1, // The number. E.g. "12"
+ YearNumberToken = 2, // The number which is considered as year number, which has 3 or more digits. E.g. "2003"
+ Am = 3, // AM timemark. E.g. "AM"
+ Pm = 4, // PM timemark. E.g. "PM"
+ MonthToken = 5, // A word (or words) that represents a month name. E.g. "March"
+ EndOfString = 6, // End of string
+ DayOfWeekToken = 7, // A word (or words) that represents a day of week name. E.g. "Monday" or "Mon"
+ TimeZoneToken = 8, // A word that represents a timezone name. E.g. "GMT"
+ EraToken = 9, // A word that represents a era name. E.g. "A.D."
+ DateWordToken = 10, // A word that can appear in a DateTime string, but serves no parsing semantics. E.g. "de" in Spanish culture.
+ UnknownToken = 11, // An unknown word, which signals an error in parsing.
+ HebrewNumber = 12, // A number that is composed of Hebrew text. Hebrew calendar uses Hebrew digits for year values, month values, and day values.
+ JapaneseEraToken = 13, // Era name for JapaneseCalendar
+ TEraToken = 14, // Era name for TaiwanCalendar
+ IgnorableSymbol = 15, // A separator like "," that is equivalent to whitespace
+
+
+ // Separator tokens.
+ SEP_Unk = 0x100, // Unknown separator.
+ SEP_End = 0x200, // The end of the parsing string.
+ SEP_Space = 0x300, // Whitespace (including comma).
+ SEP_Am = 0x400, // AM timemark. E.g. "AM"
+ SEP_Pm = 0x500, // PM timemark. E.g. "PM"
+ SEP_Date = 0x600, // date separator. E.g. "/"
+ SEP_Time = 0x700, // time separator. E.g. ":"
+ SEP_YearSuff = 0x800, // Chinese/Japanese/Korean year suffix.
+ SEP_MonthSuff = 0x900, // Chinese/Japanese/Korean month suffix.
+ SEP_DaySuff = 0xa00, // Chinese/Japanese/Korean day suffix.
+ SEP_HourSuff = 0xb00, // Chinese/Japanese/Korean hour suffix.
+ SEP_MinuteSuff = 0xc00, // Chinese/Japanese/Korean minute suffix.
+ SEP_SecondSuff = 0xd00, // Chinese/Japanese/Korean second suffix.
+ SEP_LocalTimeMark = 0xe00, // 'T', used in ISO 8601 format.
+ SEP_DateOrOffset = 0xf00, // '-' which could be a date separator or start of a time zone offset
+
+ RegularTokenMask = 0x00ff,
+ SeparatorTokenMask = 0xff00,
+ }
+}