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| 1 // Copyright 2006-2008 the V8 project authors. All rights reserved. | |
| 2 // Redistribution and use in source and binary forms, with or without | |
| 3 // modification, are permitted provided that the following conditions are | |
| 4 // met: | |
| 5 // | |
| 6 // * Redistributions of source code must retain the above copyright | |
| 7 // notice, this list of conditions and the following disclaimer. | |
| 8 // * Redistributions in binary form must reproduce the above | |
| 9 // copyright notice, this list of conditions and the following | |
| 10 // disclaimer in the documentation and/or other materials provided | |
| 11 // with the distribution. | |
| 12 // * Neither the name of Google Inc. nor the names of its | |
| 13 // contributors may be used to endorse or promote products derived | |
| 14 // from this software without specific prior written permission. | |
| 15 // | |
| 16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
| 17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
| 18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
| 19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
| 20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
| 21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
| 22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
| 23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
| 24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
| 25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
| 26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 27 | |
| 28 | |
| 29 // This file relies on the fact that the following declarations have been made | |
| 30 // in v8natives.js: | |
| 31 // const $isFinite = GlobalIsFinite; | |
| 32 | |
| 33 // ------------------------------------------------------------------- | |
| 34 | |
| 35 // This file contains date support implemented in JavaScript. | |
| 36 | |
| 37 | |
| 38 // Keep reference to original values of some global properties. This | |
| 39 // has the added benefit that the code in this file is isolated from | |
| 40 // changes to these properties. | |
| 41 const $Date = global.Date; | |
| 42 | |
| 43 // Helper function to throw error. | |
| 44 function ThrowDateTypeError() { | |
| 45 throw new $TypeError('this is not a Date object.'); | |
| 46 } | |
| 47 | |
| 48 // ECMA 262 - 5.2 | |
| 49 function Modulo(value, remainder) { | |
| 50 var mod = value % remainder; | |
| 51 // Guard against returning -0. | |
| 52 if (mod == 0) return 0; | |
| 53 return mod >= 0 ? mod : mod + remainder; | |
| 54 } | |
| 55 | |
| 56 | |
| 57 function TimeWithinDay(time) { | |
| 58 return Modulo(time, msPerDay); | |
| 59 } | |
| 60 | |
| 61 | |
| 62 // ECMA 262 - 15.9.1.3 | |
| 63 function DaysInYear(year) { | |
| 64 if (year % 4 != 0) return 365; | |
| 65 if ((year % 100 == 0) && (year % 400 != 0)) return 365; | |
| 66 return 366; | |
| 67 } | |
| 68 | |
| 69 | |
| 70 function DayFromYear(year) { | |
| 71 return 365 * (year-1970) | |
| 72 + FLOOR((year-1969)/4) | |
| 73 - FLOOR((year-1901)/100) | |
| 74 + FLOOR((year-1601)/400); | |
| 75 } | |
| 76 | |
| 77 | |
| 78 function TimeFromYear(year) { | |
| 79 return msPerDay * DayFromYear(year); | |
| 80 } | |
| 81 | |
| 82 | |
| 83 function InLeapYear(time) { | |
| 84 return DaysInYear(YEAR_FROM_TIME(time)) == 366 ? 1 : 0; | |
| 85 } | |
| 86 | |
| 87 | |
| 88 function DayWithinYear(time) { | |
| 89 return DAY(time) - DayFromYear(YEAR_FROM_TIME(time)); | |
| 90 } | |
| 91 | |
| 92 | |
| 93 // ECMA 262 - 15.9.1.9 | |
| 94 function EquivalentYear(year) { | |
| 95 // Returns an equivalent year in the range [2008-2035] matching | |
| 96 // - leap year. | |
| 97 // - week day of first day. | |
| 98 var time = TimeFromYear(year); | |
| 99 var recent_year = (InLeapYear(time) == 0 ? 1967 : 1956) + | |
| 100 (WeekDay(time) * 12) % 28; | |
| 101 // Find the year in the range 2008..2037 that is equivalent mod 28. | |
| 102 // Add 3*28 to give a positive argument to the modulus operator. | |
| 103 return 2008 + (recent_year + 3*28 - 2008) % 28; | |
| 104 } | |
| 105 | |
| 106 | |
| 107 function EquivalentTime(t) { | |
| 108 // The issue here is that some library calls don't work right for dates | |
| 109 // that cannot be represented using a non-negative signed 32 bit integer | |
| 110 // (measured in whole seconds based on the 1970 epoch). | |
| 111 // We solve this by mapping the time to a year with same leap-year-ness | |
| 112 // and same starting day for the year. The ECMAscript specification says | |
| 113 // we must do this, but for compatibility with other browsers, we use | |
| 114 // the actual year if it is in the range 1970..2037 | |
| 115 if (t >= 0 && t <= 2.1e12) return t; | |
| 116 var day = MakeDay(EquivalentYear(YEAR_FROM_TIME(t)), MONTH_FROM_TIME(t), DATE_
FROM_TIME(t)); | |
| 117 return TimeClip(MakeDate(day, TimeWithinDay(t))); | |
| 118 } | |
| 119 | |
| 120 | |
| 121 // Because computing the DST offset is a pretty expensive operation | |
| 122 // we keep a cache of last computed offset along with a time interval | |
| 123 // where we know the cache is valid. | |
| 124 var DST_offset_cache = { | |
| 125 // Cached DST offset. | |
| 126 offset: 0, | |
| 127 // Time interval where the cached offset is valid. | |
| 128 start: 0, end: -1, | |
| 129 // Size of next interval expansion. | |
| 130 increment: 0 | |
| 131 }; | |
| 132 | |
| 133 | |
| 134 // NOTE: The implementation relies on the fact that no time zones have | |
| 135 // more than one daylight savings offset change per month. | |
| 136 // If this function is called with NaN it returns NaN. | |
| 137 function DaylightSavingsOffset(t) { | |
| 138 // Load the cache object from the builtins object. | |
| 139 var cache = DST_offset_cache; | |
| 140 | |
| 141 // Cache the start and the end in local variables for fast access. | |
| 142 var start = cache.start; | |
| 143 var end = cache.end; | |
| 144 | |
| 145 if (start <= t) { | |
| 146 // If the time fits in the cached interval, return the cached offset. | |
| 147 if (t <= end) return cache.offset; | |
| 148 | |
| 149 // Compute a possible new interval end. | |
| 150 var new_end = end + cache.increment; | |
| 151 | |
| 152 if (t <= new_end) { | |
| 153 var end_offset = %DateDaylightSavingsOffset(EquivalentTime(new_end)); | |
| 154 if (cache.offset == end_offset) { | |
| 155 // If the offset at the end of the new interval still matches | |
| 156 // the offset in the cache, we grow the cached time interval | |
| 157 // and return the offset. | |
| 158 cache.end = new_end; | |
| 159 cache.increment = msPerMonth; | |
| 160 return end_offset; | |
| 161 } else { | |
| 162 var offset = %DateDaylightSavingsOffset(EquivalentTime(t)); | |
| 163 if (offset == end_offset) { | |
| 164 // The offset at the given time is equal to the offset at the | |
| 165 // new end of the interval, so that means that we've just skipped | |
| 166 // the point in time where the DST offset change occurred. Updated | |
| 167 // the interval to reflect this and reset the increment. | |
| 168 cache.start = t; | |
| 169 cache.end = new_end; | |
| 170 cache.increment = msPerMonth; | |
| 171 } else { | |
| 172 // The interval contains a DST offset change and the given time is | |
| 173 // before it. Adjust the increment to avoid a linear search for | |
| 174 // the offset change point and change the end of the interval. | |
| 175 cache.increment /= 3; | |
| 176 cache.end = t; | |
| 177 } | |
| 178 // Update the offset in the cache and return it. | |
| 179 cache.offset = offset; | |
| 180 return offset; | |
| 181 } | |
| 182 } | |
| 183 } | |
| 184 | |
| 185 // Compute the DST offset for the time and shrink the cache interval | |
| 186 // to only contain the time. This allows fast repeated DST offset | |
| 187 // computations for the same time. | |
| 188 var offset = %DateDaylightSavingsOffset(EquivalentTime(t)); | |
| 189 cache.offset = offset; | |
| 190 cache.start = cache.end = t; | |
| 191 cache.increment = msPerMonth; | |
| 192 return offset; | |
| 193 } | |
| 194 | |
| 195 | |
| 196 var timezone_cache_time = $NaN; | |
| 197 var timezone_cache_timezone; | |
| 198 | |
| 199 function LocalTimezone(t) { | |
| 200 if (NUMBER_IS_NAN(t)) return ""; | |
| 201 if (t == timezone_cache_time) { | |
| 202 return timezone_cache_timezone; | |
| 203 } | |
| 204 var timezone = %DateLocalTimezone(EquivalentTime(t)); | |
| 205 timezone_cache_time = t; | |
| 206 timezone_cache_timezone = timezone; | |
| 207 return timezone; | |
| 208 } | |
| 209 | |
| 210 | |
| 211 function WeekDay(time) { | |
| 212 return Modulo(DAY(time) + 4, 7); | |
| 213 } | |
| 214 | |
| 215 var local_time_offset = %DateLocalTimeOffset(); | |
| 216 | |
| 217 function LocalTime(time) { | |
| 218 if (NUMBER_IS_NAN(time)) return time; | |
| 219 return time + local_time_offset + DaylightSavingsOffset(time); | |
| 220 } | |
| 221 | |
| 222 function LocalTimeNoCheck(time) { | |
| 223 // Inline the DST offset cache checks for speed. | |
| 224 var cache = DST_offset_cache; | |
| 225 if (cache.start <= time && time <= cache.end) { | |
| 226 var dst_offset = cache.offset; | |
| 227 } else { | |
| 228 var dst_offset = DaylightSavingsOffset(time); | |
| 229 } | |
| 230 return time + local_time_offset + dst_offset; | |
| 231 } | |
| 232 | |
| 233 | |
| 234 function UTC(time) { | |
| 235 if (NUMBER_IS_NAN(time)) return time; | |
| 236 var tmp = time - local_time_offset; | |
| 237 return tmp - DaylightSavingsOffset(tmp); | |
| 238 } | |
| 239 | |
| 240 | |
| 241 // ECMA 262 - 15.9.1.11 | |
| 242 function MakeTime(hour, min, sec, ms) { | |
| 243 if (!$isFinite(hour)) return $NaN; | |
| 244 if (!$isFinite(min)) return $NaN; | |
| 245 if (!$isFinite(sec)) return $NaN; | |
| 246 if (!$isFinite(ms)) return $NaN; | |
| 247 return TO_INTEGER(hour) * msPerHour | |
| 248 + TO_INTEGER(min) * msPerMinute | |
| 249 + TO_INTEGER(sec) * msPerSecond | |
| 250 + TO_INTEGER(ms); | |
| 251 } | |
| 252 | |
| 253 | |
| 254 // ECMA 262 - 15.9.1.12 | |
| 255 function TimeInYear(year) { | |
| 256 return DaysInYear(year) * msPerDay; | |
| 257 } | |
| 258 | |
| 259 | |
| 260 // Compute modified Julian day from year, month, date. | |
| 261 function ToJulianDay(year, month, date) { | |
| 262 var jy = (month > 1) ? year : year - 1; | |
| 263 var jm = (month > 1) ? month + 2 : month + 14; | |
| 264 var ja = FLOOR(jy / 100); | |
| 265 return FLOOR(FLOOR(365.25*jy) + FLOOR(30.6001*jm) + date + 1720995) + 2 - ja +
FLOOR(0.25*ja); | |
| 266 } | |
| 267 | |
| 268 var four_year_cycle_table = CalculateDateTable(); | |
| 269 | |
| 270 | |
| 271 function CalculateDateTable() { | |
| 272 var month_lengths = [31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31]; | |
| 273 var four_year_cycle_table = new $Array(1461); | |
| 274 | |
| 275 var cumulative = 0; | |
| 276 var position = 0; | |
| 277 var leap_position = 0; | |
| 278 for (var month = 0; month < 12; month++) { | |
| 279 var month_bits = month << kMonthShift; | |
| 280 var length = month_lengths[month]; | |
| 281 for (var day = 1; day <= length; day++) { | |
| 282 four_year_cycle_table[leap_position] = | |
| 283 month_bits + day; | |
| 284 four_year_cycle_table[366 + position] = | |
| 285 (1 << kYearShift) + month_bits + day; | |
| 286 four_year_cycle_table[731 + position] = | |
| 287 (2 << kYearShift) + month_bits + day; | |
| 288 four_year_cycle_table[1096 + position] = | |
| 289 (3 << kYearShift) + month_bits + day; | |
| 290 leap_position++; | |
| 291 position++; | |
| 292 } | |
| 293 if (month == 1) { | |
| 294 four_year_cycle_table[leap_position++] = month_bits + 29; | |
| 295 } | |
| 296 } | |
| 297 return four_year_cycle_table; | |
| 298 } | |
| 299 | |
| 300 | |
| 301 // Constructor for creating objects holding year, month, and date. | |
| 302 // Introduced to ensure the two return points in FromJulianDay match same map. | |
| 303 function DayTriplet(year, month, date) { | |
| 304 this.year = year; | |
| 305 this.month = month; | |
| 306 this.date = date; | |
| 307 } | |
| 308 | |
| 309 var julian_day_cache_triplet; | |
| 310 var julian_day_cache_day = $NaN; | |
| 311 | |
| 312 // Compute year, month, and day from modified Julian day. | |
| 313 // The missing days in 1582 are ignored for JavaScript compatibility. | |
| 314 function FromJulianDay(julian) { | |
| 315 if (julian_day_cache_day == julian) { | |
| 316 return julian_day_cache_triplet; | |
| 317 } | |
| 318 var result; | |
| 319 // Avoid floating point and non-Smi maths in common case. This is also a peri
od of | |
| 320 // time where leap years are very regular. The range is not too large to avoi
d overflow | |
| 321 // when doing the multiply-to-divide trick. | |
| 322 if (julian > kDayZeroInJulianDay && | |
| 323 (julian - kDayZeroInJulianDay) < 40177) { // 1970 - 2080 | |
| 324 var jsimple = (julian - kDayZeroInJulianDay) + 731; // Day 0 is 1st January
1968 | |
| 325 var y = 1968; | |
| 326 // Divide by 1461 by multiplying with 22967 and shifting down by 25! | |
| 327 var after_1968 = (jsimple * 22967) >> 25; | |
| 328 y += after_1968 << 2; | |
| 329 jsimple -= 1461 * after_1968; | |
| 330 var four_year_cycle = four_year_cycle_table[jsimple]; | |
| 331 result = new DayTriplet(y + (four_year_cycle >> kYearShift), | |
| 332 (four_year_cycle & kMonthMask) >> kMonthShift, | |
| 333 four_year_cycle & kDayMask); | |
| 334 } else { | |
| 335 var jalpha = FLOOR((julian - 1867216.25) / 36524.25); | |
| 336 var jb = julian + 1 + jalpha - FLOOR(0.25 * jalpha) + 1524; | |
| 337 var jc = FLOOR(6680.0 + ((jb-2439870) - 122.1)/365.25); | |
| 338 var jd = FLOOR(365 * jc + (0.25 * jc)); | |
| 339 var je = FLOOR((jb - jd)/30.6001); | |
| 340 var m = je - 1; | |
| 341 if (m > 12) m -= 13; | |
| 342 var y = jc - 4715; | |
| 343 if (m > 2) { --y; --m; } | |
| 344 var d = jb - jd - FLOOR(30.6001 * je); | |
| 345 result = new DayTriplet(y, m, d); | |
| 346 } | |
| 347 julian_day_cache_day = julian; | |
| 348 julian_day_cache_triplet = result; | |
| 349 return result; | |
| 350 } | |
| 351 | |
| 352 | |
| 353 // Compute number of days given a year, month, date. | |
| 354 // Note that month and date can lie outside the normal range. | |
| 355 // For example: | |
| 356 // MakeDay(2007, -4, 20) --> MakeDay(2006, 8, 20) | |
| 357 // MakeDay(2007, -33, 1) --> MakeDay(2004, 3, 1) | |
| 358 // MakeDay(2007, 14, -50) --> MakeDay(2007, 8, 11) | |
| 359 function MakeDay(year, month, date) { | |
| 360 if (!$isFinite(year) || !$isFinite(month) || !$isFinite(date)) return $NaN; | |
| 361 | |
| 362 // Conversion to integers. | |
| 363 year = TO_INTEGER(year); | |
| 364 month = TO_INTEGER(month); | |
| 365 date = TO_INTEGER(date); | |
| 366 | |
| 367 // Overflow months into year. | |
| 368 year = year + FLOOR(month/12); | |
| 369 month = month % 12; | |
| 370 if (month < 0) { | |
| 371 month += 12; | |
| 372 } | |
| 373 | |
| 374 // Return days relative to Jan 1 1970. | |
| 375 return ToJulianDay(year, month, date) - kDayZeroInJulianDay; | |
| 376 } | |
| 377 | |
| 378 | |
| 379 // ECMA 262 - 15.9.1.13 | |
| 380 function MakeDate(day, time) { | |
| 381 if (!$isFinite(day)) return $NaN; | |
| 382 if (!$isFinite(time)) return $NaN; | |
| 383 return day * msPerDay + time; | |
| 384 } | |
| 385 | |
| 386 | |
| 387 // ECMA 262 - 15.9.1.14 | |
| 388 function TimeClip(time) { | |
| 389 if (!$isFinite(time)) return $NaN; | |
| 390 if ($abs(time) > 8.64E15) return $NaN; | |
| 391 return TO_INTEGER(time); | |
| 392 } | |
| 393 | |
| 394 | |
| 395 // The Date cache is used to limit the cost of parsing the same Date | |
| 396 // strings over and over again. | |
| 397 var Date_cache = { | |
| 398 // Cached time value. | |
| 399 time: $NaN, | |
| 400 // Cached year when interpreting the time as a local time. Only | |
| 401 // valid when the time matches cached time. | |
| 402 year: $NaN, | |
| 403 // String input for which the cached time is valid. | |
| 404 string: null | |
| 405 }; | |
| 406 | |
| 407 | |
| 408 %SetCode($Date, function(year, month, date, hours, minutes, seconds, ms) { | |
| 409 if (!%_IsConstructCall()) { | |
| 410 // ECMA 262 - 15.9.2 | |
| 411 return (new $Date()).toString(); | |
| 412 } | |
| 413 | |
| 414 // ECMA 262 - 15.9.3 | |
| 415 var argc = %_ArgumentsLength(); | |
| 416 var value; | |
| 417 if (argc == 0) { | |
| 418 value = %DateCurrentTime(); | |
| 419 | |
| 420 } else if (argc == 1) { | |
| 421 if (IS_NUMBER(year)) { | |
| 422 value = TimeClip(year); | |
| 423 | |
| 424 } else if (IS_STRING(year)) { | |
| 425 // Probe the Date cache. If we already have a time value for the | |
| 426 // given time, we re-use that instead of parsing the string again. | |
| 427 var cache = Date_cache; | |
| 428 if (cache.string === year) { | |
| 429 value = cache.time; | |
| 430 } else { | |
| 431 value = DateParse(year); | |
| 432 if (!NUMBER_IS_NAN(value)) { | |
| 433 cache.time = value; | |
| 434 cache.year = YEAR_FROM_TIME(LocalTimeNoCheck(value)); | |
| 435 cache.string = year; | |
| 436 } | |
| 437 } | |
| 438 | |
| 439 } else { | |
| 440 // According to ECMA 262, no hint should be given for this | |
| 441 // conversion. However, ToPrimitive defaults to STRING_HINT for | |
| 442 // Date objects which will lose precision when the Date | |
| 443 // constructor is called with another Date object as its | |
| 444 // argument. We therefore use NUMBER_HINT for the conversion, | |
| 445 // which is the default for everything else than Date objects. | |
| 446 // This makes us behave like KJS and SpiderMonkey. | |
| 447 var time = ToPrimitive(year, NUMBER_HINT); | |
| 448 value = IS_STRING(time) ? DateParse(time) : TimeClip(ToNumber(time)); | |
| 449 } | |
| 450 | |
| 451 } else { | |
| 452 year = ToNumber(year); | |
| 453 month = ToNumber(month); | |
| 454 date = argc > 2 ? ToNumber(date) : 1; | |
| 455 hours = argc > 3 ? ToNumber(hours) : 0; | |
| 456 minutes = argc > 4 ? ToNumber(minutes) : 0; | |
| 457 seconds = argc > 5 ? ToNumber(seconds) : 0; | |
| 458 ms = argc > 6 ? ToNumber(ms) : 0; | |
| 459 year = (!NUMBER_IS_NAN(year) && 0 <= TO_INTEGER(year) && TO_INTEGER(year) <=
99) | |
| 460 ? 1900 + TO_INTEGER(year) : year; | |
| 461 var day = MakeDay(year, month, date); | |
| 462 var time = MakeTime(hours, minutes, seconds, ms); | |
| 463 value = TimeClip(UTC(MakeDate(day, time))); | |
| 464 } | |
| 465 %_SetValueOf(this, value); | |
| 466 }); | |
| 467 | |
| 468 | |
| 469 // Helper functions. | |
| 470 function GetTimeFrom(aDate) { | |
| 471 return DATE_VALUE(aDate); | |
| 472 } | |
| 473 | |
| 474 function GetMillisecondsFrom(aDate) { | |
| 475 var t = DATE_VALUE(aDate); | |
| 476 if (NUMBER_IS_NAN(t)) return t; | |
| 477 return MS_FROM_TIME(LocalTimeNoCheck(t)); | |
| 478 } | |
| 479 | |
| 480 | |
| 481 function GetUTCMillisecondsFrom(aDate) { | |
| 482 var t = DATE_VALUE(aDate); | |
| 483 if (NUMBER_IS_NAN(t)) return t; | |
| 484 return MS_FROM_TIME(t); | |
| 485 } | |
| 486 | |
| 487 | |
| 488 function GetSecondsFrom(aDate) { | |
| 489 var t = DATE_VALUE(aDate); | |
| 490 if (NUMBER_IS_NAN(t)) return t; | |
| 491 return SEC_FROM_TIME(LocalTimeNoCheck(t)); | |
| 492 } | |
| 493 | |
| 494 | |
| 495 function GetUTCSecondsFrom(aDate) { | |
| 496 var t = DATE_VALUE(aDate); | |
| 497 if (NUMBER_IS_NAN(t)) return t; | |
| 498 return SEC_FROM_TIME(t); | |
| 499 } | |
| 500 | |
| 501 | |
| 502 function GetMinutesFrom(aDate) { | |
| 503 var t = DATE_VALUE(aDate); | |
| 504 if (NUMBER_IS_NAN(t)) return t; | |
| 505 return MIN_FROM_TIME(LocalTimeNoCheck(t)); | |
| 506 } | |
| 507 | |
| 508 | |
| 509 function GetUTCMinutesFrom(aDate) { | |
| 510 var t = DATE_VALUE(aDate); | |
| 511 if (NUMBER_IS_NAN(t)) return t; | |
| 512 return MIN_FROM_TIME(t); | |
| 513 } | |
| 514 | |
| 515 | |
| 516 function GetHoursFrom(aDate) { | |
| 517 var t = DATE_VALUE(aDate); | |
| 518 if (NUMBER_IS_NAN(t)) return t; | |
| 519 return HOUR_FROM_TIME(LocalTimeNoCheck(t)); | |
| 520 } | |
| 521 | |
| 522 | |
| 523 function GetUTCHoursFrom(aDate) { | |
| 524 var t = DATE_VALUE(aDate); | |
| 525 if (NUMBER_IS_NAN(t)) return t; | |
| 526 return HOUR_FROM_TIME(t); | |
| 527 } | |
| 528 | |
| 529 | |
| 530 function GetFullYearFrom(aDate) { | |
| 531 var t = DATE_VALUE(aDate); | |
| 532 if (NUMBER_IS_NAN(t)) return t; | |
| 533 var cache = Date_cache; | |
| 534 if (cache.time === t) return cache.year; | |
| 535 return YEAR_FROM_TIME(LocalTimeNoCheck(t)); | |
| 536 } | |
| 537 | |
| 538 | |
| 539 function GetUTCFullYearFrom(aDate) { | |
| 540 var t = DATE_VALUE(aDate); | |
| 541 if (NUMBER_IS_NAN(t)) return t; | |
| 542 return YEAR_FROM_TIME(t); | |
| 543 } | |
| 544 | |
| 545 | |
| 546 function GetMonthFrom(aDate) { | |
| 547 var t = DATE_VALUE(aDate); | |
| 548 if (NUMBER_IS_NAN(t)) return t; | |
| 549 return MONTH_FROM_TIME(LocalTimeNoCheck(t)); | |
| 550 } | |
| 551 | |
| 552 | |
| 553 function GetUTCMonthFrom(aDate) { | |
| 554 var t = DATE_VALUE(aDate); | |
| 555 if (NUMBER_IS_NAN(t)) return t; | |
| 556 return MONTH_FROM_TIME(t); | |
| 557 } | |
| 558 | |
| 559 | |
| 560 function GetDateFrom(aDate) { | |
| 561 var t = DATE_VALUE(aDate); | |
| 562 if (NUMBER_IS_NAN(t)) return t; | |
| 563 return DATE_FROM_TIME(LocalTimeNoCheck(t)); | |
| 564 } | |
| 565 | |
| 566 | |
| 567 function GetUTCDateFrom(aDate) { | |
| 568 var t = DATE_VALUE(aDate); | |
| 569 if (NUMBER_IS_NAN(t)) return t; | |
| 570 return DATE_FROM_TIME(t); | |
| 571 } | |
| 572 | |
| 573 | |
| 574 %FunctionSetPrototype($Date, new $Date($NaN)); | |
| 575 | |
| 576 | |
| 577 var WeekDays = ['Sun', 'Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat']; | |
| 578 var Months = ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oc
t', 'Nov', 'Dec']; | |
| 579 | |
| 580 | |
| 581 function TwoDigitString(value) { | |
| 582 return value < 10 ? "0" + value : "" + value; | |
| 583 } | |
| 584 | |
| 585 | |
| 586 function DateString(time) { | |
| 587 var YMD = FromJulianDay(DAY(time) + kDayZeroInJulianDay); | |
| 588 return WeekDays[WeekDay(time)] + ' ' | |
| 589 + Months[YMD.month] + ' ' | |
| 590 + TwoDigitString(YMD.date) + ' ' | |
| 591 + YMD.year; | |
| 592 } | |
| 593 | |
| 594 | |
| 595 var LongWeekDays = ['Sunday', 'Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Fri
day', 'Saturday']; | |
| 596 var LongMonths = ['January', 'February', 'March', 'April', 'May', 'June', 'July'
, 'August', 'September', 'October', 'November', 'December']; | |
| 597 | |
| 598 | |
| 599 function LongDateString(time) { | |
| 600 var YMD = FromJulianDay(DAY(time) + kDayZeroInJulianDay); | |
| 601 return LongWeekDays[WeekDay(time)] + ', ' | |
| 602 + LongMonths[YMD.month] + ' ' | |
| 603 + TwoDigitString(YMD.date) + ', ' | |
| 604 + YMD.year; | |
| 605 } | |
| 606 | |
| 607 | |
| 608 function TimeString(time) { | |
| 609 return TwoDigitString(HOUR_FROM_TIME(time)) + ':' | |
| 610 + TwoDigitString(MIN_FROM_TIME(time)) + ':' | |
| 611 + TwoDigitString(SEC_FROM_TIME(time)); | |
| 612 } | |
| 613 | |
| 614 | |
| 615 function LocalTimezoneString(time) { | |
| 616 var timezoneOffset = | |
| 617 (local_time_offset + DaylightSavingsOffset(time)) / msPerMinute; | |
| 618 var sign = (timezoneOffset >= 0) ? 1 : -1; | |
| 619 var hours = FLOOR((sign * timezoneOffset)/60); | |
| 620 var min = FLOOR((sign * timezoneOffset)%60); | |
| 621 var gmt = ' GMT' + ((sign == 1) ? '+' : '-') + | |
| 622 TwoDigitString(hours) + TwoDigitString(min); | |
| 623 return gmt + ' (' + LocalTimezone(time) + ')'; | |
| 624 } | |
| 625 | |
| 626 | |
| 627 function DatePrintString(time) { | |
| 628 return DateString(time) + ' ' + TimeString(time); | |
| 629 } | |
| 630 | |
| 631 // ------------------------------------------------------------------- | |
| 632 | |
| 633 // Reused output buffer. Used when parsing date strings. | |
| 634 var parse_buffer = $Array(7); | |
| 635 | |
| 636 // ECMA 262 - 15.9.4.2 | |
| 637 function DateParse(string) { | |
| 638 var arr = %DateParseString(ToString(string), parse_buffer); | |
| 639 if (IS_NULL(arr)) return $NaN; | |
| 640 | |
| 641 var day = MakeDay(arr[0], arr[1], arr[2]); | |
| 642 var time = MakeTime(arr[3], arr[4], arr[5], 0); | |
| 643 var date = MakeDate(day, time); | |
| 644 | |
| 645 if (IS_NULL(arr[6])) { | |
| 646 return TimeClip(UTC(date)); | |
| 647 } else { | |
| 648 return TimeClip(date - arr[6] * 1000); | |
| 649 } | |
| 650 } | |
| 651 | |
| 652 | |
| 653 // ECMA 262 - 15.9.4.3 | |
| 654 function DateUTC(year, month, date, hours, minutes, seconds, ms) { | |
| 655 year = ToNumber(year); | |
| 656 month = ToNumber(month); | |
| 657 var argc = %_ArgumentsLength(); | |
| 658 date = argc > 2 ? ToNumber(date) : 1; | |
| 659 hours = argc > 3 ? ToNumber(hours) : 0; | |
| 660 minutes = argc > 4 ? ToNumber(minutes) : 0; | |
| 661 seconds = argc > 5 ? ToNumber(seconds) : 0; | |
| 662 ms = argc > 6 ? ToNumber(ms) : 0; | |
| 663 year = (!NUMBER_IS_NAN(year) && 0 <= TO_INTEGER(year) && TO_INTEGER(year) <= 9
9) | |
| 664 ? 1900 + TO_INTEGER(year) : year; | |
| 665 var day = MakeDay(year, month, date); | |
| 666 var time = MakeTime(hours, minutes, seconds, ms); | |
| 667 return %_SetValueOf(this, TimeClip(MakeDate(day, time))); | |
| 668 } | |
| 669 | |
| 670 | |
| 671 // Mozilla-specific extension. Returns the number of milliseconds | |
| 672 // elapsed since 1 January 1970 00:00:00 UTC. | |
| 673 function DateNow() { | |
| 674 return %DateCurrentTime(); | |
| 675 } | |
| 676 | |
| 677 | |
| 678 // ECMA 262 - 15.9.5.2 | |
| 679 function DateToString() { | |
| 680 var t = DATE_VALUE(this); | |
| 681 if (NUMBER_IS_NAN(t)) return kInvalidDate; | |
| 682 return DatePrintString(LocalTimeNoCheck(t)) + LocalTimezoneString(t); | |
| 683 } | |
| 684 | |
| 685 | |
| 686 // ECMA 262 - 15.9.5.3 | |
| 687 function DateToDateString() { | |
| 688 var t = DATE_VALUE(this); | |
| 689 if (NUMBER_IS_NAN(t)) return kInvalidDate; | |
| 690 return DateString(LocalTimeNoCheck(t)); | |
| 691 } | |
| 692 | |
| 693 | |
| 694 // ECMA 262 - 15.9.5.4 | |
| 695 function DateToTimeString() { | |
| 696 var t = DATE_VALUE(this); | |
| 697 if (NUMBER_IS_NAN(t)) return kInvalidDate; | |
| 698 var lt = LocalTimeNoCheck(t); | |
| 699 return TimeString(lt) + LocalTimezoneString(lt); | |
| 700 } | |
| 701 | |
| 702 | |
| 703 // ECMA 262 - 15.9.5.5 | |
| 704 function DateToLocaleString() { | |
| 705 return DateToString.call(this); | |
| 706 } | |
| 707 | |
| 708 | |
| 709 // ECMA 262 - 15.9.5.6 | |
| 710 function DateToLocaleDateString() { | |
| 711 var t = DATE_VALUE(this); | |
| 712 if (NUMBER_IS_NAN(t)) return kInvalidDate; | |
| 713 return LongDateString(LocalTimeNoCheck(t)); | |
| 714 } | |
| 715 | |
| 716 | |
| 717 // ECMA 262 - 15.9.5.7 | |
| 718 function DateToLocaleTimeString() { | |
| 719 var t = DATE_VALUE(this); | |
| 720 if (NUMBER_IS_NAN(t)) return kInvalidDate; | |
| 721 var lt = LocalTimeNoCheck(t); | |
| 722 return TimeString(lt); | |
| 723 } | |
| 724 | |
| 725 | |
| 726 // ECMA 262 - 15.9.5.8 | |
| 727 function DateValueOf() { | |
| 728 return DATE_VALUE(this); | |
| 729 } | |
| 730 | |
| 731 | |
| 732 // ECMA 262 - 15.9.5.9 | |
| 733 function DateGetTime() { | |
| 734 return DATE_VALUE(this); | |
| 735 } | |
| 736 | |
| 737 | |
| 738 // ECMA 262 - 15.9.5.10 | |
| 739 function DateGetFullYear() { | |
| 740 return GetFullYearFrom(this) | |
| 741 } | |
| 742 | |
| 743 | |
| 744 // ECMA 262 - 15.9.5.11 | |
| 745 function DateGetUTCFullYear() { | |
| 746 return GetUTCFullYearFrom(this) | |
| 747 } | |
| 748 | |
| 749 | |
| 750 // ECMA 262 - 15.9.5.12 | |
| 751 function DateGetMonth() { | |
| 752 return GetMonthFrom(this); | |
| 753 } | |
| 754 | |
| 755 | |
| 756 // ECMA 262 - 15.9.5.13 | |
| 757 function DateGetUTCMonth() { | |
| 758 return GetUTCMonthFrom(this); | |
| 759 } | |
| 760 | |
| 761 | |
| 762 // ECMA 262 - 15.9.5.14 | |
| 763 function DateGetDate() { | |
| 764 return GetDateFrom(this); | |
| 765 } | |
| 766 | |
| 767 | |
| 768 // ECMA 262 - 15.9.5.15 | |
| 769 function DateGetUTCDate() { | |
| 770 return GetUTCDateFrom(this); | |
| 771 } | |
| 772 | |
| 773 | |
| 774 // ECMA 262 - 15.9.5.16 | |
| 775 function DateGetDay() { | |
| 776 var t = %_ValueOf(this); | |
| 777 if (NUMBER_IS_NAN(t)) return t; | |
| 778 return WeekDay(LocalTimeNoCheck(t)); | |
| 779 } | |
| 780 | |
| 781 | |
| 782 // ECMA 262 - 15.9.5.17 | |
| 783 function DateGetUTCDay() { | |
| 784 var t = %_ValueOf(this); | |
| 785 if (NUMBER_IS_NAN(t)) return t; | |
| 786 return WeekDay(t); | |
| 787 } | |
| 788 | |
| 789 | |
| 790 // ECMA 262 - 15.9.5.18 | |
| 791 function DateGetHours() { | |
| 792 return GetHoursFrom(this); | |
| 793 } | |
| 794 | |
| 795 | |
| 796 // ECMA 262 - 15.9.5.19 | |
| 797 function DateGetUTCHours() { | |
| 798 return GetUTCHoursFrom(this); | |
| 799 } | |
| 800 | |
| 801 | |
| 802 // ECMA 262 - 15.9.5.20 | |
| 803 function DateGetMinutes() { | |
| 804 return GetMinutesFrom(this); | |
| 805 } | |
| 806 | |
| 807 | |
| 808 // ECMA 262 - 15.9.5.21 | |
| 809 function DateGetUTCMinutes() { | |
| 810 return GetUTCMinutesFrom(this); | |
| 811 } | |
| 812 | |
| 813 | |
| 814 // ECMA 262 - 15.9.5.22 | |
| 815 function DateGetSeconds() { | |
| 816 return GetSecondsFrom(this); | |
| 817 } | |
| 818 | |
| 819 | |
| 820 // ECMA 262 - 15.9.5.23 | |
| 821 function DateGetUTCSeconds() { | |
| 822 return GetUTCSecondsFrom(this); | |
| 823 } | |
| 824 | |
| 825 | |
| 826 // ECMA 262 - 15.9.5.24 | |
| 827 function DateGetMilliseconds() { | |
| 828 return GetMillisecondsFrom(this); | |
| 829 } | |
| 830 | |
| 831 | |
| 832 // ECMA 262 - 15.9.5.25 | |
| 833 function DateGetUTCMilliseconds() { | |
| 834 return GetUTCMillisecondsFrom(this); | |
| 835 } | |
| 836 | |
| 837 | |
| 838 // ECMA 262 - 15.9.5.26 | |
| 839 function DateGetTimezoneOffset() { | |
| 840 var t = DATE_VALUE(this); | |
| 841 if (NUMBER_IS_NAN(t)) return t; | |
| 842 return (t - LocalTimeNoCheck(t)) / msPerMinute; | |
| 843 } | |
| 844 | |
| 845 | |
| 846 // ECMA 262 - 15.9.5.27 | |
| 847 function DateSetTime(ms) { | |
| 848 if (!IS_DATE(this)) ThrowDateTypeError(); | |
| 849 return %_SetValueOf(this, TimeClip(ToNumber(ms))); | |
| 850 } | |
| 851 | |
| 852 | |
| 853 // ECMA 262 - 15.9.5.28 | |
| 854 function DateSetMilliseconds(ms) { | |
| 855 var t = LocalTime(DATE_VALUE(this)); | |
| 856 ms = ToNumber(ms); | |
| 857 var time = MakeTime(HOUR_FROM_TIME(t), MIN_FROM_TIME(t), SEC_FROM_TIME(t), ms)
; | |
| 858 return %_SetValueOf(this, TimeClip(UTC(MakeDate(DAY(t), time)))); | |
| 859 } | |
| 860 | |
| 861 | |
| 862 // ECMA 262 - 15.9.5.29 | |
| 863 function DateSetUTCMilliseconds(ms) { | |
| 864 var t = DATE_VALUE(this); | |
| 865 ms = ToNumber(ms); | |
| 866 var time = MakeTime(HOUR_FROM_TIME(t), MIN_FROM_TIME(t), SEC_FROM_TIME(t), ms)
; | |
| 867 return %_SetValueOf(this, TimeClip(MakeDate(DAY(t), time))); | |
| 868 } | |
| 869 | |
| 870 | |
| 871 // ECMA 262 - 15.9.5.30 | |
| 872 function DateSetSeconds(sec, ms) { | |
| 873 var t = LocalTime(DATE_VALUE(this)); | |
| 874 sec = ToNumber(sec); | |
| 875 ms = %_ArgumentsLength() < 2 ? GetMillisecondsFrom(this) : ToNumber(ms); | |
| 876 var time = MakeTime(HOUR_FROM_TIME(t), MIN_FROM_TIME(t), sec, ms); | |
| 877 return %_SetValueOf(this, TimeClip(UTC(MakeDate(DAY(t), time)))); | |
| 878 } | |
| 879 | |
| 880 | |
| 881 // ECMA 262 - 15.9.5.31 | |
| 882 function DateSetUTCSeconds(sec, ms) { | |
| 883 var t = DATE_VALUE(this); | |
| 884 sec = ToNumber(sec); | |
| 885 ms = %_ArgumentsLength() < 2 ? GetUTCMillisecondsFrom(this) : ToNumber(ms); | |
| 886 var time = MakeTime(HOUR_FROM_TIME(t), MIN_FROM_TIME(t), sec, ms); | |
| 887 return %_SetValueOf(this, TimeClip(MakeDate(DAY(t), time))); | |
| 888 } | |
| 889 | |
| 890 | |
| 891 // ECMA 262 - 15.9.5.33 | |
| 892 function DateSetMinutes(min, sec, ms) { | |
| 893 var t = LocalTime(DATE_VALUE(this)); | |
| 894 min = ToNumber(min); | |
| 895 var argc = %_ArgumentsLength(); | |
| 896 sec = argc < 2 ? GetSecondsFrom(this) : ToNumber(sec); | |
| 897 ms = argc < 3 ? GetMillisecondsFrom(this) : ToNumber(ms); | |
| 898 var time = MakeTime(HOUR_FROM_TIME(t), min, sec, ms); | |
| 899 return %_SetValueOf(this, TimeClip(UTC(MakeDate(DAY(t), time)))); | |
| 900 } | |
| 901 | |
| 902 | |
| 903 // ECMA 262 - 15.9.5.34 | |
| 904 function DateSetUTCMinutes(min, sec, ms) { | |
| 905 var t = DATE_VALUE(this); | |
| 906 min = ToNumber(min); | |
| 907 var argc = %_ArgumentsLength(); | |
| 908 sec = argc < 2 ? GetUTCSecondsFrom(this) : ToNumber(sec); | |
| 909 ms = argc < 3 ? GetUTCMillisecondsFrom(this) : ToNumber(ms); | |
| 910 var time = MakeTime(HOUR_FROM_TIME(t), min, sec, ms); | |
| 911 return %_SetValueOf(this, TimeClip(MakeDate(DAY(t), time))); | |
| 912 } | |
| 913 | |
| 914 | |
| 915 // ECMA 262 - 15.9.5.35 | |
| 916 function DateSetHours(hour, min, sec, ms) { | |
| 917 var t = LocalTime(DATE_VALUE(this)); | |
| 918 hour = ToNumber(hour); | |
| 919 var argc = %_ArgumentsLength(); | |
| 920 min = argc < 2 ? GetMinutesFrom(this) : ToNumber(min); | |
| 921 sec = argc < 3 ? GetSecondsFrom(this) : ToNumber(sec); | |
| 922 ms = argc < 4 ? GetMillisecondsFrom(this) : ToNumber(ms); | |
| 923 var time = MakeTime(hour, min, sec, ms); | |
| 924 return %_SetValueOf(this, TimeClip(UTC(MakeDate(DAY(t), time)))); | |
| 925 } | |
| 926 | |
| 927 | |
| 928 // ECMA 262 - 15.9.5.34 | |
| 929 function DateSetUTCHours(hour, min, sec, ms) { | |
| 930 var t = DATE_VALUE(this); | |
| 931 hour = ToNumber(hour); | |
| 932 var argc = %_ArgumentsLength(); | |
| 933 min = argc < 2 ? GetUTCMinutesFrom(this) : ToNumber(min); | |
| 934 sec = argc < 3 ? GetUTCSecondsFrom(this) : ToNumber(sec); | |
| 935 ms = argc < 4 ? GetUTCMillisecondsFrom(this) : ToNumber(ms); | |
| 936 var time = MakeTime(hour, min, sec, ms); | |
| 937 return %_SetValueOf(this, TimeClip(MakeDate(DAY(t), time))); | |
| 938 } | |
| 939 | |
| 940 | |
| 941 // ECMA 262 - 15.9.5.36 | |
| 942 function DateSetDate(date) { | |
| 943 var t = LocalTime(DATE_VALUE(this)); | |
| 944 date = ToNumber(date); | |
| 945 var day = MakeDay(YEAR_FROM_TIME(t), MONTH_FROM_TIME(t), date); | |
| 946 return %_SetValueOf(this, TimeClip(UTC(MakeDate(day, TimeWithinDay(t))))); | |
| 947 } | |
| 948 | |
| 949 | |
| 950 // ECMA 262 - 15.9.5.37 | |
| 951 function DateSetUTCDate(date) { | |
| 952 var t = DATE_VALUE(this); | |
| 953 date = ToNumber(date); | |
| 954 var day = MakeDay(YEAR_FROM_TIME(t), MONTH_FROM_TIME(t), date); | |
| 955 return %_SetValueOf(this, TimeClip(MakeDate(day, TimeWithinDay(t)))); | |
| 956 } | |
| 957 | |
| 958 | |
| 959 // ECMA 262 - 15.9.5.38 | |
| 960 function DateSetMonth(month, date) { | |
| 961 var t = LocalTime(DATE_VALUE(this)); | |
| 962 month = ToNumber(month); | |
| 963 date = %_ArgumentsLength() < 2 ? GetDateFrom(this) : ToNumber(date); | |
| 964 var day = MakeDay(YEAR_FROM_TIME(t), month, date); | |
| 965 return %_SetValueOf(this, TimeClip(UTC(MakeDate(day, TimeWithinDay(t))))); | |
| 966 } | |
| 967 | |
| 968 | |
| 969 // ECMA 262 - 15.9.5.39 | |
| 970 function DateSetUTCMonth(month, date) { | |
| 971 var t = DATE_VALUE(this); | |
| 972 month = ToNumber(month); | |
| 973 date = %_ArgumentsLength() < 2 ? GetUTCDateFrom(this) : ToNumber(date); | |
| 974 var day = MakeDay(YEAR_FROM_TIME(t), month, date); | |
| 975 return %_SetValueOf(this, TimeClip(MakeDate(day, TimeWithinDay(t)))); | |
| 976 } | |
| 977 | |
| 978 | |
| 979 // ECMA 262 - 15.9.5.40 | |
| 980 function DateSetFullYear(year, month, date) { | |
| 981 var t = DATE_VALUE(this); | |
| 982 t = NUMBER_IS_NAN(t) ? 0 : LocalTimeNoCheck(t); | |
| 983 year = ToNumber(year); | |
| 984 var argc = %_ArgumentsLength(); | |
| 985 month = argc < 2 ? MONTH_FROM_TIME(t) : ToNumber(month); | |
| 986 date = argc < 3 ? DATE_FROM_TIME(t) : ToNumber(date); | |
| 987 var day = MakeDay(year, month, date); | |
| 988 return %_SetValueOf(this, TimeClip(UTC(MakeDate(day, TimeWithinDay(t))))); | |
| 989 } | |
| 990 | |
| 991 | |
| 992 // ECMA 262 - 15.9.5.41 | |
| 993 function DateSetUTCFullYear(year, month, date) { | |
| 994 var t = DATE_VALUE(this); | |
| 995 if (NUMBER_IS_NAN(t)) t = 0; | |
| 996 var argc = %_ArgumentsLength(); | |
| 997 year = ToNumber(year); | |
| 998 month = argc < 2 ? MONTH_FROM_TIME(t) : ToNumber(month); | |
| 999 date = argc < 3 ? DATE_FROM_TIME(t) : ToNumber(date); | |
| 1000 var day = MakeDay(year, month, date); | |
| 1001 return %_SetValueOf(this, TimeClip(MakeDate(day, TimeWithinDay(t)))); | |
| 1002 } | |
| 1003 | |
| 1004 | |
| 1005 // ECMA 262 - 15.9.5.42 | |
| 1006 function DateToUTCString() { | |
| 1007 var t = DATE_VALUE(this); | |
| 1008 if (NUMBER_IS_NAN(t)) return kInvalidDate; | |
| 1009 // Return UTC string of the form: Sat, 31 Jan 1970 23:00:00 GMT | |
| 1010 return WeekDays[WeekDay(t)] + ', ' | |
| 1011 + TwoDigitString(DATE_FROM_TIME(t)) + ' ' | |
| 1012 + Months[MONTH_FROM_TIME(t)] + ' ' | |
| 1013 + YEAR_FROM_TIME(t) + ' ' | |
| 1014 + TimeString(t) + ' GMT'; | |
| 1015 } | |
| 1016 | |
| 1017 | |
| 1018 // ECMA 262 - B.2.4 | |
| 1019 function DateGetYear() { | |
| 1020 var t = DATE_VALUE(this); | |
| 1021 if (NUMBER_IS_NAN(t)) return $NaN; | |
| 1022 return YEAR_FROM_TIME(LocalTimeNoCheck(t)) - 1900; | |
| 1023 } | |
| 1024 | |
| 1025 | |
| 1026 // ECMA 262 - B.2.5 | |
| 1027 function DateSetYear(year) { | |
| 1028 var t = LocalTime(DATE_VALUE(this)); | |
| 1029 if (NUMBER_IS_NAN(t)) t = 0; | |
| 1030 year = ToNumber(year); | |
| 1031 if (NUMBER_IS_NAN(year)) return %_SetValueOf(this, $NaN); | |
| 1032 year = (0 <= TO_INTEGER(year) && TO_INTEGER(year) <= 99) | |
| 1033 ? 1900 + TO_INTEGER(year) : year; | |
| 1034 var day = MakeDay(year, MONTH_FROM_TIME(t), DATE_FROM_TIME(t)); | |
| 1035 return %_SetValueOf(this, TimeClip(UTC(MakeDate(day, TimeWithinDay(t))))); | |
| 1036 } | |
| 1037 | |
| 1038 | |
| 1039 // ECMA 262 - B.2.6 | |
| 1040 // | |
| 1041 // Notice that this does not follow ECMA 262 completely. ECMA 262 | |
| 1042 // says that toGMTString should be the same Function object as | |
| 1043 // toUTCString. JSC does not do this, so for compatibility we do not | |
| 1044 // do that either. Instead, we create a new function whose name | |
| 1045 // property will return toGMTString. | |
| 1046 function DateToGMTString() { | |
| 1047 return DateToUTCString.call(this); | |
| 1048 } | |
| 1049 | |
| 1050 | |
| 1051 function PadInt(n, digits) { | |
| 1052 if (digits == 1) return n; | |
| 1053 return n < MathPow(10, digits - 1) ? '0' + PadInt(n, digits - 1) : n; | |
| 1054 } | |
| 1055 | |
| 1056 | |
| 1057 function DateToISOString() { | |
| 1058 var t = DATE_VALUE(this); | |
| 1059 if (NUMBER_IS_NAN(t)) return kInvalidDate; | |
| 1060 return this.getUTCFullYear() + '-' + PadInt(this.getUTCMonth() + 1, 2) + | |
| 1061 '-' + PadInt(this.getUTCDate(), 2) + 'T' + PadInt(this.getUTCHours(), 2) + | |
| 1062 ':' + PadInt(this.getUTCMinutes(), 2) + ':' + PadInt(this.getUTCSeconds(),
2) + | |
| 1063 '.' + PadInt(this.getUTCMilliseconds(), 3) + | |
| 1064 'Z'; | |
| 1065 } | |
| 1066 | |
| 1067 | |
| 1068 function DateToJSON(key) { | |
| 1069 return CheckJSONPrimitive(this.toISOString()); | |
| 1070 } | |
| 1071 | |
| 1072 | |
| 1073 // ------------------------------------------------------------------- | |
| 1074 | |
| 1075 function SetupDate() { | |
| 1076 // Setup non-enumerable properties of the Date object itself. | |
| 1077 InstallFunctions($Date, DONT_ENUM, $Array( | |
| 1078 "UTC", DateUTC, | |
| 1079 "parse", DateParse, | |
| 1080 "now", DateNow | |
| 1081 )); | |
| 1082 | |
| 1083 // Setup non-enumerable constructor property of the Date prototype object. | |
| 1084 %SetProperty($Date.prototype, "constructor", $Date, DONT_ENUM); | |
| 1085 | |
| 1086 // Setup non-enumerable functions of the Date prototype object and | |
| 1087 // set their names. | |
| 1088 InstallFunctionsOnHiddenPrototype($Date.prototype, DONT_ENUM, $Array( | |
| 1089 "toString", DateToString, | |
| 1090 "toDateString", DateToDateString, | |
| 1091 "toTimeString", DateToTimeString, | |
| 1092 "toLocaleString", DateToLocaleString, | |
| 1093 "toLocaleDateString", DateToLocaleDateString, | |
| 1094 "toLocaleTimeString", DateToLocaleTimeString, | |
| 1095 "valueOf", DateValueOf, | |
| 1096 "getTime", DateGetTime, | |
| 1097 "getFullYear", DateGetFullYear, | |
| 1098 "getUTCFullYear", DateGetUTCFullYear, | |
| 1099 "getMonth", DateGetMonth, | |
| 1100 "getUTCMonth", DateGetUTCMonth, | |
| 1101 "getDate", DateGetDate, | |
| 1102 "getUTCDate", DateGetUTCDate, | |
| 1103 "getDay", DateGetDay, | |
| 1104 "getUTCDay", DateGetUTCDay, | |
| 1105 "getHours", DateGetHours, | |
| 1106 "getUTCHours", DateGetUTCHours, | |
| 1107 "getMinutes", DateGetMinutes, | |
| 1108 "getUTCMinutes", DateGetUTCMinutes, | |
| 1109 "getSeconds", DateGetSeconds, | |
| 1110 "getUTCSeconds", DateGetUTCSeconds, | |
| 1111 "getMilliseconds", DateGetMilliseconds, | |
| 1112 "getUTCMilliseconds", DateGetUTCMilliseconds, | |
| 1113 "getTimezoneOffset", DateGetTimezoneOffset, | |
| 1114 "setTime", DateSetTime, | |
| 1115 "setMilliseconds", DateSetMilliseconds, | |
| 1116 "setUTCMilliseconds", DateSetUTCMilliseconds, | |
| 1117 "setSeconds", DateSetSeconds, | |
| 1118 "setUTCSeconds", DateSetUTCSeconds, | |
| 1119 "setMinutes", DateSetMinutes, | |
| 1120 "setUTCMinutes", DateSetUTCMinutes, | |
| 1121 "setHours", DateSetHours, | |
| 1122 "setUTCHours", DateSetUTCHours, | |
| 1123 "setDate", DateSetDate, | |
| 1124 "setUTCDate", DateSetUTCDate, | |
| 1125 "setMonth", DateSetMonth, | |
| 1126 "setUTCMonth", DateSetUTCMonth, | |
| 1127 "setFullYear", DateSetFullYear, | |
| 1128 "setUTCFullYear", DateSetUTCFullYear, | |
| 1129 "toGMTString", DateToGMTString, | |
| 1130 "toUTCString", DateToUTCString, | |
| 1131 "getYear", DateGetYear, | |
| 1132 "setYear", DateSetYear, | |
| 1133 "toISOString", DateToISOString, | |
| 1134 "toJSON", DateToJSON | |
| 1135 )); | |
| 1136 } | |
| 1137 | |
| 1138 SetupDate(); | |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 564035:
Remove lazy loading of natives files and the natives cache.... (Closed)
Base URL: http://v8.googlecode.com/svn/branches/experimental/partial_snapshots/