// Copyright 2006-2008 the V8 project authors. All rights reserved. // Redistribution and use in source and binary forms, with or without // modification, are permitted provided that the following conditions are // met: // // * Redistributions of source code must retain the above copyright // notice, this list of conditions and the following disclaimer. // * Redistributions in binary form must reproduce the above // copyright notice, this list of conditions and the following // disclaimer in the documentation and/or other materials provided // with the distribution. // * Neither the name of Google Inc. nor the names of its // contributors may be used to endorse or promote products derived // from this software without specific prior written permission. // // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. // This file relies on the fact that the following declarations have been made // in v8natives.js: // const $isNaN = GlobalIsNaN; // const $isFinite = GlobalIsFinite; // ------------------------------------------------------------------- // This file contains date support implemented in JavaScript. // Keep reference to original values of some global properties. This // has the added benefit that the code in this file is isolated from // changes to these properties. const $Date = global.Date; // ECMA 262 - 15.9.1.2 function Day(time) { return FLOOR(time/msPerDay); } // ECMA 262 - 5.2 function Modulo(value, remainder) { var mod = value % remainder; // Guard against returning -0. if (mod == 0) return 0; return mod >= 0 ? mod : mod + remainder; } function TimeWithinDay(time) { return Modulo(time, msPerDay); } // ECMA 262 - 15.9.1.3 function DaysInYear(year) { if (year % 4 != 0) return 365; if ((year % 100 == 0) && (year % 400 != 0)) return 365; return 366; } function DayFromYear(year) { return 365 * (year-1970) + FLOOR((year-1969)/4) - FLOOR((year-1901)/100) + FLOOR((year-1601)/400); } function TimeFromYear(year) { return msPerDay * DayFromYear(year); } function YearFromTime(time) { return FromJulianDay(Day(time) + kDayZeroInJulianDay).year; } function InLeapYear(time) { return DaysInYear(YearFromTime(time)) == 366 ? 1 : 0; } // ECMA 262 - 15.9.1.4 function MonthFromTime(time) { return FromJulianDay(Day(time) + kDayZeroInJulianDay).month; } function DayWithinYear(time) { return Day(time) - DayFromYear(YearFromTime(time)); } // ECMA 262 - 15.9.1.5 function DateFromTime(time) { return FromJulianDay(Day(time) + kDayZeroInJulianDay).date; } // ECMA 262 - 15.9.1.9 function EquivalentYear(year) { // Returns an equivalent year in the range [2008-2035] matching // - leap year. // - week day of first day. var time = TimeFromYear(year); var recent_year = (InLeapYear(time) == 0 ? 1967 : 1956) + (WeekDay(time) * 12) % 28; // Find the year in the range 2008..2037 that is equivalent mod 28. // Add 3*28 to give a positive argument to the modulus operator. return 2008 + (recent_year + 3*28 - 2008) % 28; } function EquivalentTime(t) { // The issue here is that some library calls don't work right for dates // that cannot be represented using a non-negative signed 32 bit integer // (measured in whole seconds based on the 1970 epoch). // We solve this by mapping the time to a year with same leap-year-ness // and same starting day for the year. The ECMAscript specification says // we must do this, but for compatibility with other browsers, we use // the actual year if it is in the range 1970..2037 if (t >= 0 && t <= 2.1e12) return t; var day = MakeDay(EquivalentYear(YearFromTime(t)), MonthFromTime(t), DateFromTime(t)); return TimeClip(MakeDate(day, TimeWithinDay(t))); } // Because computing the DST offset is a pretty expensive operation // we keep a cache of last computed offset along with a time interval // where we know the cache is valid. var DST_offset_cache = { // Cached DST offset. offset: 0, // Time interval where the cached offset is valid. start: 0, end: -1, // Size of next interval expansion. increment: 0 }; function DaylightSavingsOffset(t) { // Load the cache object from the builtins object. var cache = DST_offset_cache; // Cache the start and the end in local variables for fast access. var start = cache.start; var end = cache.end; if (start <= t) { // If the time fits in the cached interval, return the cached offset. if (t <= end) return cache.offset; // Compute a possible new interval end. var new_end = end + cache.increment; if (t <= new_end) { var end_offset = %DateDaylightSavingsOffset(EquivalentTime(new_end)); if (cache.offset == end_offset) { // If the offset at the end of the new interval still matches // the offset in the cache, we grow the cached time interval // and return the offset. cache.end = new_end; cache.increment = msPerMonth; return end_offset; } else { var offset = %DateDaylightSavingsOffset(EquivalentTime(t)); if (offset == end_offset) { // The offset at the given time is equal to the offset at the // new end of the interval, so that means that we've just skipped // the point in time where the DST offset change occurred. Updated // the interval to reflect this and reset the increment. cache.start = t; cache.end = new_end; cache.increment = msPerMonth; } else { // The interval contains a DST offset change and the given time is // before it. Adjust the increment to avoid a linear search for // the offset change point and change the end of the interval. cache.increment /= 3; cache.end = t; } // Update the offset in the cache and return it. cache.offset = offset; return offset; } } } // Compute the DST offset for the time and shrink the cache interval // to only contain the time. This allows fast repeated DST offset // computations for the same time. var offset = %DateDaylightSavingsOffset(EquivalentTime(t)); cache.offset = offset; cache.start = cache.end = t; cache.increment = msPerMonth; return offset; } var timezone_cache_time = $NaN; var timezone_cache_timezone; function LocalTimezone(t) { if (t == timezone_cache_time) { return timezone_cache_timezone; } var timezone = %DateLocalTimezone(EquivalentTime(t)); timezone_cache_time = t; timezone_cache_timezone = timezone; return timezone; } function WeekDay(time) { return Modulo(Day(time) + 4, 7); } var local_time_offset = %DateLocalTimeOffset(); function LocalTime(time) { if ($isNaN(time)) return time; return time + local_time_offset + DaylightSavingsOffset(time); } function LocalTimeNoCheck(time) { return time + local_time_offset + DaylightSavingsOffset(time); } function UTC(time) { if ($isNaN(time)) return time; var tmp = time - local_time_offset; return tmp - DaylightSavingsOffset(tmp); } // ECMA 262 - 15.9.1.10 function HourFromTime(time) { return Modulo(FLOOR(time / msPerHour), HoursPerDay); } function MinFromTime(time) { return Modulo(FLOOR(time / msPerMinute), MinutesPerHour); } function SecFromTime(time) { return Modulo(FLOOR(time / msPerSecond), SecondsPerMinute); } function msFromTime(time) { return Modulo(time, msPerSecond); } // ECMA 262 - 15.9.1.11 function MakeTime(hour, min, sec, ms) { if (!$isFinite(hour)) return $NaN; if (!$isFinite(min)) return $NaN; if (!$isFinite(sec)) return $NaN; if (!$isFinite(ms)) return $NaN; return TO_INTEGER(hour) * msPerHour + TO_INTEGER(min) * msPerMinute + TO_INTEGER(sec) * msPerSecond + TO_INTEGER(ms); } // ECMA 262 - 15.9.1.12 function TimeInYear(year) { return DaysInYear(year) * msPerDay; } // Compute modified Julian day from year, month, date. function ToJulianDay(year, month, date) { var jy = (month > 1) ? year : year - 1; var jm = (month > 1) ? month + 2 : month + 14; var ja = FLOOR(jy / 100); return FLOOR(FLOOR(365.25*jy) + FLOOR(30.6001*jm) + date + 1720995) + 2 - ja + FLOOR(0.25*ja); } var four_year_cycle_table = CalculateDateTable(); function CalculateDateTable() { var month_lengths = [31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31]; var four_year_cycle_table = new $Array(1461); var cumulative = 0; var position = 0; var leap_position = 0; for (var month = 0; month < 12; month++) { var month_bits = month << kMonthShift; var length = month_lengths[month]; for (var day = 1; day <= length; day++) { four_year_cycle_table[leap_position] = month_bits + day; four_year_cycle_table[366 + position] = (1 << kYearShift) + month_bits + day; four_year_cycle_table[731 + position] = (2 << kYearShift) + month_bits + day; four_year_cycle_table[1096 + position] = (3 << kYearShift) + month_bits + day; leap_position++; position++; } if (month == 1) { four_year_cycle_table[leap_position++] = month_bits + 29; } } return four_year_cycle_table; } // Constructor for creating objects holding year, month, and date. // Introduced to ensure the two return points in FromJulianDay match same map. function DayTriplet(year, month, date) { this.year = year; this.month = month; this.date = date; } var julian_day_cache_triplet; var julian_day_cache_day = $NaN; // Compute year, month, and day from modified Julian day. // The missing days in 1582 are ignored for JavaScript compatibility. function FromJulianDay(julian) { if (julian_day_cache_day == julian) { return julian_day_cache_triplet; } var result; // Avoid floating point and non-Smi maths in common case. This is also a period of // time where leap years are very regular. The range is not too large to avoid overflow // when doing the multiply-to-divide trick. if (julian > kDayZeroInJulianDay && (julian - kDayZeroInJulianDay) < 40177) { // 1970 - 2080 var jsimple = (julian - kDayZeroInJulianDay) + 731; // Day 0 is 1st January 1968 var y = 1968; // Divide by 1461 by multiplying with 22967 and shifting down by 25! var after_1968 = (jsimple * 22967) >> 25; y += after_1968 << 2; jsimple -= 1461 * after_1968; var four_year_cycle = four_year_cycle_table[jsimple]; result = new DayTriplet(y + (four_year_cycle >> kYearShift), (four_year_cycle & kMonthMask) >> kMonthShift, four_year_cycle & kDayMask); } else { var jalpha = FLOOR((julian - 1867216.25) / 36524.25); var jb = julian + 1 + jalpha - FLOOR(0.25 * jalpha) + 1524; var jc = FLOOR(6680.0 + ((jb-2439870) - 122.1)/365.25); var jd = FLOOR(365 * jc + (0.25 * jc)); var je = FLOOR((jb - jd)/30.6001); var m = je - 1; if (m > 12) m -= 13; var y = jc - 4715; if (m > 2) { --y; --m; } var d = jb - jd - FLOOR(30.6001 * je); result = new DayTriplet(y, m, d); } julian_day_cache_day = julian; julian_day_cache_triplet = result; return result; } // Compute number of days given a year, month, date. // Note that month and date can lie outside the normal range. // For example: // MakeDay(2007, -4, 20) --> MakeDay(2006, 8, 20) // MakeDay(2007, -33, 1) --> MakeDay(2004, 3, 1) // MakeDay(2007, 14, -50) --> MakeDay(2007, 8, 11) function MakeDay(year, month, date) { if (!$isFinite(year) || !$isFinite(month) || !$isFinite(date)) return $NaN; // Conversion to integers. year = TO_INTEGER(year); month = TO_INTEGER(month); date = TO_INTEGER(date); // Overflow months into year. year = year + FLOOR(month/12); month = month % 12; if (month < 0) { month += 12; } // Return days relative to Jan 1 1970. return ToJulianDay(year, month, date) - kDayZeroInJulianDay; } // ECMA 262 - 15.9.1.13 function MakeDate(day, time) { if (!$isFinite(day)) return $NaN; if (!$isFinite(time)) return $NaN; return day * msPerDay + time; } // ECMA 262 - 15.9.1.14 function TimeClip(time) { if (!$isFinite(time)) return $NaN; if ($abs(time) > 8.64E15) return $NaN; return TO_INTEGER(time); } %SetCode($Date, function(year, month, date, hours, minutes, seconds, ms) { if (%IsConstructCall()) { // ECMA 262 - 15.9.3 var argc = %_ArgumentsLength(); if (argc == 0) { %_SetValueOf(this, %DateCurrentTime()); return; } if (argc == 1) { // According to ECMA 262, no hint should be given for this // conversion. However, ToPrimitive defaults to String Hint // for Date objects which will lose precision when the Date // constructor is called with another Date object as its // argument. We therefore use Number Hint for the conversion // (which is the default for everything else than Date // objects). This makes us behave like KJS and SpiderMonkey. var time = ToPrimitive(year, NUMBER_HINT); if (IS_STRING(time)) { %_SetValueOf(this, DateParse(time)); } else { %_SetValueOf(this, TimeClip(ToNumber(time))); } return; } year = ToNumber(year); month = ToNumber(month); date = argc > 2 ? ToNumber(date) : 1; hours = argc > 3 ? ToNumber(hours) : 0; minutes = argc > 4 ? ToNumber(minutes) : 0; seconds = argc > 5 ? ToNumber(seconds) : 0; ms = argc > 6 ? ToNumber(ms) : 0; year = (!$isNaN(year) && 0 <= TO_INTEGER(year) && TO_INTEGER(year) <= 99) ? 1900 + TO_INTEGER(year) : year; var day = MakeDay(year, month, date); var time = MakeTime(hours, minutes, seconds, ms); %_SetValueOf(this, TimeClip(UTC(MakeDate(day, time)))); } else { // ECMA 262 - 15.9.2 return (new $Date()).toString(); } }); // Helper functions. function GetTimeFrom(aDate) { if (IS_DATE(aDate)) return %_ValueOf(aDate); throw new $TypeError('this is not a Date object.'); } function GetMillisecondsFrom(aDate) { var t = GetTimeFrom(aDate); if ($isNaN(t)) return t; return msFromTime(LocalTimeNoCheck(t)); } function GetUTCMillisecondsFrom(aDate) { var t = GetTimeFrom(aDate); if ($isNaN(t)) return t; return msFromTime(t); } function GetSecondsFrom(aDate) { var t = GetTimeFrom(aDate); if ($isNaN(t)) return t; return SecFromTime(LocalTimeNoCheck(t)); } function GetUTCSecondsFrom(aDate) { var t = GetTimeFrom(aDate); if ($isNaN(t)) return t; return SecFromTime(t); } function GetMinutesFrom(aDate) { var t = GetTimeFrom(aDate); if ($isNaN(t)) return t; return MinFromTime(LocalTimeNoCheck(t)); } function GetUTCMinutesFrom(aDate) { var t = GetTimeFrom(aDate); if ($isNaN(t)) return t; return MinFromTime(t); } function GetHoursFrom(aDate) { var t = GetTimeFrom(aDate); if ($isNaN(t)) return t; return HourFromTime(LocalTimeNoCheck(t)); } function GetUTCHoursFrom(aDate) { var t = GetTimeFrom(aDate); if ($isNaN(t)) return t; return HourFromTime(t); } function GetFullYearFrom(aDate) { var t = GetTimeFrom(aDate); if ($isNaN(t)) return t; return YearFromTime(LocalTimeNoCheck(t)); } function GetUTCFullYearFrom(aDate) { var t = GetTimeFrom(aDate); if ($isNaN(t)) return t; return YearFromTime(t); } function GetMonthFrom(aDate) { var t = GetTimeFrom(aDate); if ($isNaN(t)) return t; return MonthFromTime(LocalTimeNoCheck(t)); } function GetUTCMonthFrom(aDate) { var t = GetTimeFrom(aDate); if ($isNaN(t)) return t; return MonthFromTime(t); } function GetDateFrom(aDate) { var t = GetTimeFrom(aDate); if ($isNaN(t)) return t; return DateFromTime(LocalTimeNoCheck(t)); } function GetUTCDateFrom(aDate) { var t = GetTimeFrom(aDate); if ($isNaN(t)) return t; return DateFromTime(t); } %FunctionSetPrototype($Date, new $Date($NaN)); var WeekDays = ['Sun', 'Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat']; var Months = ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec']; function TwoDigitString(value) { return value < 10 ? "0" + value : "" + value; } function DateString(time) { var YMD = FromJulianDay(Day(time) + kDayZeroInJulianDay); return WeekDays[WeekDay(time)] + ' ' + Months[YMD.month] + ' ' + TwoDigitString(YMD.date) + ' ' + YMD.year; } var LongWeekDays = ['Sunday', 'Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday']; var LongMonths = ['January', 'February', 'March', 'April', 'May', 'June', 'July', 'August', 'September', 'October', 'November', 'December']; function LongDateString(time) { var YMD = FromJulianDay(Day(time) + kDayZeroInJulianDay); return LongWeekDays[WeekDay(time)] + ', ' + LongMonths[YMD.month] + ' ' + TwoDigitString(YMD.date) + ', ' + YMD.year; } function TimeString(time) { return TwoDigitString(HourFromTime(time)) + ':' + TwoDigitString(MinFromTime(time)) + ':' + TwoDigitString(SecFromTime(time)); } function LocalTimezoneString(time) { var timezoneOffset = (local_time_offset + DaylightSavingsOffset(time)) / msPerMinute; var sign = (timezoneOffset >= 0) ? 1 : -1; var hours = FLOOR((sign * timezoneOffset)/60); var min = FLOOR((sign * timezoneOffset)%60); var gmt = ' GMT' + ((sign == 1) ? '+' : '-') + TwoDigitString(hours) + TwoDigitString(min); return gmt + ' (' + LocalTimezone(time) + ')'; } function DatePrintString(time) { return DateString(time) + ' ' + TimeString(time); } // ------------------------------------------------------------------- // Reused output buffer. var parse_buffer = $Array(7); // ECMA 262 - 15.9.4.2 function DateParse(string) { var arr = %DateParseString(ToString(string), parse_buffer); if (IS_NULL(arr)) return $NaN; var day = MakeDay(arr[0], arr[1], arr[2]); var time = MakeTime(arr[3], arr[4], arr[5], 0); var date = MakeDate(day, time); if (IS_NULL(arr[6])) { return TimeClip(UTC(date)); } else { return TimeClip(date - arr[6] * 1000); } } // ECMA 262 - 15.9.4.3 function DateUTC(year, month, date, hours, minutes, seconds, ms) { year = ToNumber(year); month = ToNumber(month); var argc = %_ArgumentsLength(); date = argc > 2 ? ToNumber(date) : 1; hours = argc > 3 ? ToNumber(hours) : 0; minutes = argc > 4 ? ToNumber(minutes) : 0; seconds = argc > 5 ? ToNumber(seconds) : 0; ms = argc > 6 ? ToNumber(ms) : 0; year = (!$isNaN(year) && 0 <= TO_INTEGER(year) && TO_INTEGER(year) <= 99) ? 1900 + TO_INTEGER(year) : year; var day = MakeDay(year, month, date); var time = MakeTime(hours, minutes, seconds, ms); return %_SetValueOf(this, TimeClip(MakeDate(day, time))); } // Mozilla-specific extension. Returns the number of milliseconds // elapsed since 1 January 1970 00:00:00 UTC. function DateNow() { return %DateCurrentTime(); } // ECMA 262 - 15.9.5.2 function DateToString() { var t = GetTimeFrom(this); if ($isNaN(t)) return kInvalidDate; return DatePrintString(LocalTimeNoCheck(t)) + LocalTimezoneString(t); } // ECMA 262 - 15.9.5.3 function DateToDateString() { var t = GetTimeFrom(this); if ($isNaN(t)) return kInvalidDate; return DateString(LocalTimeNoCheck(t)); } // ECMA 262 - 15.9.5.4 function DateToTimeString() { var t = GetTimeFrom(this); if ($isNaN(t)) return kInvalidDate; var lt = LocalTimeNoCheck(t); return TimeString(lt) + LocalTimezoneString(lt); } // ECMA 262 - 15.9.5.5 function DateToLocaleString() { return DateToString.call(this); } // ECMA 262 - 15.9.5.6 function DateToLocaleDateString() { var t = GetTimeFrom(this); if ($isNaN(t)) return kInvalidDate; return LongDateString(LocalTimeNoCheck(t)); } // ECMA 262 - 15.9.5.7 function DateToLocaleTimeString() { var t = GetTimeFrom(this); if ($isNaN(t)) return kInvalidDate; var lt = LocalTimeNoCheck(t); return TimeString(lt); } // ECMA 262 - 15.9.5.8 function DateValueOf() { return GetTimeFrom(this); } // ECMA 262 - 15.9.5.9 function DateGetTime() { return GetTimeFrom(this); } // ECMA 262 - 15.9.5.10 function DateGetFullYear() { return GetFullYearFrom(this) } // ECMA 262 - 15.9.5.11 function DateGetUTCFullYear() { return GetUTCFullYearFrom(this) } // ECMA 262 - 15.9.5.12 function DateGetMonth() { return GetMonthFrom(this); } // ECMA 262 - 15.9.5.13 function DateGetUTCMonth() { return GetUTCMonthFrom(this); } // ECMA 262 - 15.9.5.14 function DateGetDate() { return GetDateFrom(this); } // ECMA 262 - 15.9.5.15 function DateGetUTCDate() { return GetUTCDateFrom(this); } // ECMA 262 - 15.9.5.16 function DateGetDay() { var t = GetTimeFrom(this); if ($isNaN(t)) return t; return WeekDay(LocalTimeNoCheck(t)); } // ECMA 262 - 15.9.5.17 function DateGetUTCDay() { var t = GetTimeFrom(this); if ($isNaN(t)) return t; return WeekDay(t); } // ECMA 262 - 15.9.5.18 function DateGetHours() { return GetHoursFrom(this); } // ECMA 262 - 15.9.5.19 function DateGetUTCHours() { return GetUTCHoursFrom(this); } // ECMA 262 - 15.9.5.20 function DateGetMinutes() { return GetMinutesFrom(this); } // ECMA 262 - 15.9.5.21 function DateGetUTCMinutes() { return GetUTCMinutesFrom(this); } // ECMA 262 - 15.9.5.22 function DateGetSeconds() { return GetSecondsFrom(this); } // ECMA 262 - 15.9.5.23 function DateGetUTCSeconds() { return GetUTCSecondsFrom(this); } // ECMA 262 - 15.9.5.24 function DateGetMilliseconds() { return GetMillisecondsFrom(this); } // ECMA 262 - 15.9.5.25 function DateGetUTCMilliseconds() { return GetUTCMillisecondsFrom(this); } // ECMA 262 - 15.9.5.26 function DateGetTimezoneOffset() { var t = GetTimeFrom(this); if ($isNaN(t)) return t; return (t - LocalTimeNoCheck(t)) / msPerMinute; } // ECMA 262 - 15.9.5.27 function DateSetTime(ms) { if (!IS_DATE(this)) throw new $TypeError('this is not a Date object.'); return %_SetValueOf(this, TimeClip(ToNumber(ms))); } // ECMA 262 - 15.9.5.28 function DateSetMilliseconds(ms) { var t = LocalTime(GetTimeFrom(this)); ms = ToNumber(ms); var time = MakeTime(HourFromTime(t), MinFromTime(t), SecFromTime(t), ms); return %_SetValueOf(this, TimeClip(UTC(MakeDate(Day(t), time)))); } // ECMA 262 - 15.9.5.29 function DateSetUTCMilliseconds(ms) { var t = GetTimeFrom(this); ms = ToNumber(ms); var time = MakeTime(HourFromTime(t), MinFromTime(t), SecFromTime(t), ms); return %_SetValueOf(this, TimeClip(MakeDate(Day(t), time))); } // ECMA 262 - 15.9.5.30 function DateSetSeconds(sec, ms) { var t = LocalTime(GetTimeFrom(this)); sec = ToNumber(sec); ms = %_ArgumentsLength() < 2 ? GetMillisecondsFrom(this) : ToNumber(ms); var time = MakeTime(HourFromTime(t), MinFromTime(t), sec, ms); return %_SetValueOf(this, TimeClip(UTC(MakeDate(Day(t), time)))); } // ECMA 262 - 15.9.5.31 function DateSetUTCSeconds(sec, ms) { var t = GetTimeFrom(this); sec = ToNumber(sec); ms = %_ArgumentsLength() < 2 ? GetUTCMillisecondsFrom(this) : ToNumber(ms); var time = MakeTime(HourFromTime(t), MinFromTime(t), sec, ms); return %_SetValueOf(this, TimeClip(MakeDate(Day(t), time))); } // ECMA 262 - 15.9.5.33 function DateSetMinutes(min, sec, ms) { var t = LocalTime(GetTimeFrom(this)); min = ToNumber(min); var argc = %_ArgumentsLength(); sec = argc < 2 ? GetSecondsFrom(this) : ToNumber(sec); ms = argc < 3 ? GetMillisecondsFrom(this) : ToNumber(ms); var time = MakeTime(HourFromTime(t), min, sec, ms); return %_SetValueOf(this, TimeClip(UTC(MakeDate(Day(t), time)))); } // ECMA 262 - 15.9.5.34 function DateSetUTCMinutes(min, sec, ms) { var t = GetTimeFrom(this); min = ToNumber(min); var argc = %_ArgumentsLength(); sec = argc < 2 ? GetUTCSecondsFrom(this) : ToNumber(sec); ms = argc < 3 ? GetUTCMillisecondsFrom(this) : ToNumber(ms); var time = MakeTime(HourFromTime(t), min, sec, ms); return %_SetValueOf(this, TimeClip(MakeDate(Day(t), time))); } // ECMA 262 - 15.9.5.35 function DateSetHours(hour, min, sec, ms) { var t = LocalTime(GetTimeFrom(this)); hour = ToNumber(hour); var argc = %_ArgumentsLength(); min = argc < 2 ? GetMinutesFrom(this) : ToNumber(min); sec = argc < 3 ? GetSecondsFrom(this) : ToNumber(sec); ms = argc < 4 ? GetMillisecondsFrom(this) : ToNumber(ms); var time = MakeTime(hour, min, sec, ms); return %_SetValueOf(this, TimeClip(UTC(MakeDate(Day(t), time)))); } // ECMA 262 - 15.9.5.34 function DateSetUTCHours(hour, min, sec, ms) { var t = GetTimeFrom(this); hour = ToNumber(hour); var argc = %_ArgumentsLength(); min = argc < 2 ? GetUTCMinutesFrom(this) : ToNumber(min); sec = argc < 3 ? GetUTCSecondsFrom(this) : ToNumber(sec); ms = argc < 4 ? GetUTCMillisecondsFrom(this) : ToNumber(ms); var time = MakeTime(hour, min, sec, ms); return %_SetValueOf(this, TimeClip(MakeDate(Day(t), time))); } // ECMA 262 - 15.9.5.36 function DateSetDate(date) { var t = LocalTime(GetTimeFrom(this)); date = ToNumber(date); var day = MakeDay(YearFromTime(t), MonthFromTime(t), date); return %_SetValueOf(this, TimeClip(UTC(MakeDate(day, TimeWithinDay(t))))); } // ECMA 262 - 15.9.5.37 function DateSetUTCDate(date) { var t = GetTimeFrom(this); date = ToNumber(date); var day = MakeDay(YearFromTime(t), MonthFromTime(t), date); return %_SetValueOf(this, TimeClip(MakeDate(day, TimeWithinDay(t)))); } // ECMA 262 - 15.9.5.38 function DateSetMonth(month, date) { var t = LocalTime(GetTimeFrom(this)); month = ToNumber(month); date = %_ArgumentsLength() < 2 ? GetDateFrom(this) : ToNumber(date); var day = MakeDay(YearFromTime(t), month, date); return %_SetValueOf(this, TimeClip(UTC(MakeDate(day, TimeWithinDay(t))))); } // ECMA 262 - 15.9.5.39 function DateSetUTCMonth(month, date) { var t = GetTimeFrom(this); month = ToNumber(month); date = %_ArgumentsLength() < 2 ? GetUTCDateFrom(this) : ToNumber(date); var day = MakeDay(YearFromTime(t), month, date); return %_SetValueOf(this, TimeClip(MakeDate(day, TimeWithinDay(t)))); } // ECMA 262 - 15.9.5.40 function DateSetFullYear(year, month, date) { var t = GetTimeFrom(this); t = $isNaN(t) ? 0 : LocalTimeNoCheck(t); year = ToNumber(year); var argc = %_ArgumentsLength(); month = argc < 2 ? MonthFromTime(t) : ToNumber(month); date = argc < 3 ? DateFromTime(t) : ToNumber(date); var day = MakeDay(year, month, date); return %_SetValueOf(this, TimeClip(UTC(MakeDate(day, TimeWithinDay(t))))); } // ECMA 262 - 15.9.5.41 function DateSetUTCFullYear(year, month, date) { var t = GetTimeFrom(this); if ($isNaN(t)) t = 0; var argc = %_ArgumentsLength(); year = ToNumber(year); month = argc < 2 ? MonthFromTime(t) : ToNumber(month); date = argc < 3 ? DateFromTime(t) : ToNumber(date); var day = MakeDay(year, month, date); return %_SetValueOf(this, TimeClip(MakeDate(day, TimeWithinDay(t)))); } // ECMA 262 - 15.9.5.42 function DateToUTCString() { var t = GetTimeFrom(this); if ($isNaN(t)) return kInvalidDate; // Return UTC string of the form: Sat, 31 Jan 1970 23:00:00 GMT return WeekDays[WeekDay(t)] + ', ' + TwoDigitString(DateFromTime(t)) + ' ' + Months[MonthFromTime(t)] + ' ' + YearFromTime(t) + ' ' + TimeString(t) + ' GMT'; } // ECMA 262 - B.2.4 function DateGetYear() { var t = GetTimeFrom(this); if ($isNaN(t)) return $NaN; return YearFromTime(LocalTimeNoCheck(t)) - 1900; } // ECMA 262 - B.2.5 function DateSetYear(year) { var t = LocalTime(GetTimeFrom(this)); if ($isNaN(t)) t = 0; year = ToNumber(year); if ($isNaN(year)) return %_SetValueOf(this, $NaN); year = (0 <= TO_INTEGER(year) && TO_INTEGER(year) <= 99) ? 1900 + TO_INTEGER(year) : year; var day = MakeDay(year, MonthFromTime(t), DateFromTime(t)); return %_SetValueOf(this, TimeClip(UTC(MakeDate(day, TimeWithinDay(t))))); } // ECMA 262 - B.2.6 // // Notice that this does not follow ECMA 262 completely. ECMA 262 // says that toGMTString should be the same Function object as // toUTCString. JSC does not do this, so for compatibility we do not // do that either. Instead, we create a new function whose name // property will return toGMTString. function DateToGMTString() { return DateToUTCString.call(this); } function PadInt(n) { // Format integers to have at least two digits. return n < 10 ? '0' + n : n; } function DateToISOString() { return this.getUTCFullYear() + '-' + PadInt(this.getUTCMonth() + 1) + '-' + PadInt(this.getUTCDate()) + 'T' + PadInt(this.getUTCHours()) + ':' + PadInt(this.getUTCMinutes()) + ':' + PadInt(this.getUTCSeconds()) + 'Z'; } function DateToJSON(key) { return CheckJSONPrimitive(this.toISOString()); } // ------------------------------------------------------------------- function SetupDate() { // Setup non-enumerable properties of the Date object itself. InstallFunctions($Date, DONT_ENUM, $Array( "UTC", DateUTC, "parse", DateParse, "now", DateNow )); // Setup non-enumerable constructor property of the Date prototype object. %SetProperty($Date.prototype, "constructor", $Date, DONT_ENUM); // Setup non-enumerable functions of the Date prototype object and // set their names. InstallFunctionsOnHiddenPrototype($Date.prototype, DONT_ENUM, $Array( "toString", DateToString, "toDateString", DateToDateString, "toTimeString", DateToTimeString, "toLocaleString", DateToLocaleString, "toLocaleDateString", DateToLocaleDateString, "toLocaleTimeString", DateToLocaleTimeString, "valueOf", DateValueOf, "getTime", DateGetTime, "getFullYear", DateGetFullYear, "getUTCFullYear", DateGetUTCFullYear, "getMonth", DateGetMonth, "getUTCMonth", DateGetUTCMonth, "getDate", DateGetDate, "getUTCDate", DateGetUTCDate, "getDay", DateGetDay, "getUTCDay", DateGetUTCDay, "getHours", DateGetHours, "getUTCHours", DateGetUTCHours, "getMinutes", DateGetMinutes, "getUTCMinutes", DateGetUTCMinutes, "getSeconds", DateGetSeconds, "getUTCSeconds", DateGetUTCSeconds, "getMilliseconds", DateGetMilliseconds, "getUTCMilliseconds", DateGetUTCMilliseconds, "getTimezoneOffset", DateGetTimezoneOffset, "setTime", DateSetTime, "setMilliseconds", DateSetMilliseconds, "setUTCMilliseconds", DateSetUTCMilliseconds, "setSeconds", DateSetSeconds, "setUTCSeconds", DateSetUTCSeconds, "setMinutes", DateSetMinutes, "setUTCMinutes", DateSetUTCMinutes, "setHours", DateSetHours, "setUTCHours", DateSetUTCHours, "setDate", DateSetDate, "setUTCDate", DateSetUTCDate, "setMonth", DateSetMonth, "setUTCMonth", DateSetUTCMonth, "setFullYear", DateSetFullYear, "setUTCFullYear", DateSetUTCFullYear, "toGMTString", DateToGMTString, "toUTCString", DateToUTCString, "getYear", DateGetYear, "setYear", DateSetYear, "toISOString", DateToISOString, "toJSON", DateToJSON )); } SetupDate();