Version 2.2.23...

src/date.js

 // 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
@@ skipping 435 matching lines @@
     year = (!NUMBER_IS_NAN(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);
     value = TimeClip(UTC(MakeDate(day, time)));
   }
   %_SetValueOf(this, value);
 });
 
 
-// Helper functions.
-function GetTimeFrom(aDate) {
-  return DATE_VALUE(aDate);
-}
-
-function GetMillisecondsFrom(aDate) {
-  var t = DATE_VALUE(aDate);
-  if (NUMBER_IS_NAN(t)) return t;
-  return MS_FROM_TIME(LocalTimeNoCheck(t));
-}
-
-
-function GetUTCMillisecondsFrom(aDate) {
-  var t = DATE_VALUE(aDate);
-  if (NUMBER_IS_NAN(t)) return t;
-  return MS_FROM_TIME(t);
-}
-
-
-function GetSecondsFrom(aDate) {
-  var t = DATE_VALUE(aDate);
-  if (NUMBER_IS_NAN(t)) return t;
-  return SEC_FROM_TIME(LocalTimeNoCheck(t));
-}
-
-
-function GetUTCSecondsFrom(aDate) {
-  var t = DATE_VALUE(aDate);
-  if (NUMBER_IS_NAN(t)) return t;
-  return SEC_FROM_TIME(t);
-}
-
-
-function GetMinutesFrom(aDate) {
-  var t = DATE_VALUE(aDate);
-  if (NUMBER_IS_NAN(t)) return t;
-  return MIN_FROM_TIME(LocalTimeNoCheck(t));
-}
-
-
-function GetUTCMinutesFrom(aDate) {
-  var t = DATE_VALUE(aDate);
-  if (NUMBER_IS_NAN(t)) return t;
-  return MIN_FROM_TIME(t);
-}
-
-
-function GetHoursFrom(aDate) {
-  var t = DATE_VALUE(aDate);
-  if (NUMBER_IS_NAN(t)) return t;
-  return HOUR_FROM_TIME(LocalTimeNoCheck(t));
-}
-
-
-function GetUTCHoursFrom(aDate) {
-  var t = DATE_VALUE(aDate);
-  if (NUMBER_IS_NAN(t)) return t;
-  return HOUR_FROM_TIME(t);
-}
-
-
-function GetFullYearFrom(aDate) {
-  var t = DATE_VALUE(aDate);
-  if (NUMBER_IS_NAN(t)) return t;
-  var cache = Date_cache;
-  if (cache.time === t) return cache.year;
-  return YEAR_FROM_TIME(LocalTimeNoCheck(t));
-}
-
-
-function GetUTCFullYearFrom(aDate) {
-  var t = DATE_VALUE(aDate);
-  if (NUMBER_IS_NAN(t)) return t;
-  return YEAR_FROM_TIME(t);
-}
-
-
-function GetMonthFrom(aDate) {
-  var t = DATE_VALUE(aDate);
-  if (NUMBER_IS_NAN(t)) return t;
-  return MONTH_FROM_TIME(LocalTimeNoCheck(t));
-}
-
-
-function GetUTCMonthFrom(aDate) {
-  var t = DATE_VALUE(aDate);
-  if (NUMBER_IS_NAN(t)) return t;
-  return MONTH_FROM_TIME(t);
-}
-
-
-function GetDateFrom(aDate) {
-  var t = DATE_VALUE(aDate);
-  if (NUMBER_IS_NAN(t)) return t;
-  return DATE_FROM_TIME(LocalTimeNoCheck(t));
-}
-
-
-function GetUTCDateFrom(aDate) {
-  var t = DATE_VALUE(aDate);
-  if (NUMBER_IS_NAN(t)) return t;
-  return DATE_FROM_TIME(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;
 }
@@ skipping 159 matching lines @@
 
 
 // ECMA 262 - 15.9.5.9
 function DateGetTime() {
   return DATE_VALUE(this);
 }
 
 
 // ECMA 262 - 15.9.5.10
 function DateGetFullYear() {
-  return GetFullYearFrom(this)
+  var t = DATE_VALUE(this);
+  if (NUMBER_IS_NAN(t)) return t;
+  var cache = Date_cache;
+  if (cache.time === t) return cache.year;
+  return YEAR_FROM_TIME(LocalTimeNoCheck(t));
 }
 
 
 // ECMA 262 - 15.9.5.11
 function DateGetUTCFullYear() {
-  return GetUTCFullYearFrom(this)
+  var t = DATE_VALUE(this);
+  if (NUMBER_IS_NAN(t)) return t;
+  return YEAR_FROM_TIME(t);
 }
 
 
 // ECMA 262 - 15.9.5.12
 function DateGetMonth() {
-  return GetMonthFrom(this);
+  var t = DATE_VALUE(this);
+  if (NUMBER_IS_NAN(t)) return t;
+  return MONTH_FROM_TIME(LocalTimeNoCheck(t));
 }
 
 
 // ECMA 262 - 15.9.5.13
 function DateGetUTCMonth() {
-  return GetUTCMonthFrom(this);
+  var t = DATE_VALUE(this);
+  if (NUMBER_IS_NAN(t)) return t;
+  return MONTH_FROM_TIME(t);
 }
 
 
 // ECMA 262 - 15.9.5.14
 function DateGetDate() {
-  return GetDateFrom(this);
+  var t = DATE_VALUE(this);
+  if (NUMBER_IS_NAN(t)) return t;
+  return DATE_FROM_TIME(LocalTimeNoCheck(t));
 }
 
 
 // ECMA 262 - 15.9.5.15
 function DateGetUTCDate() {
-  return GetUTCDateFrom(this);
+  var t = DATE_VALUE(this);
+  return NAN_OR_DATE_FROM_TIME(t);
 }
 
 
 // ECMA 262 - 15.9.5.16
 function DateGetDay() {
   var t = %_ValueOf(this);
   if (NUMBER_IS_NAN(t)) return t;
   return WeekDay(LocalTimeNoCheck(t));
 }
 
 
 // ECMA 262 - 15.9.5.17
 function DateGetUTCDay() {
   var t = %_ValueOf(this);
   if (NUMBER_IS_NAN(t)) return t;
   return WeekDay(t);
 }
 
 
 // ECMA 262 - 15.9.5.18
 function DateGetHours() {
-  return GetHoursFrom(this);
+  var t = DATE_VALUE(this);
+  if (NUMBER_IS_NAN(t)) return t;
+  return HOUR_FROM_TIME(LocalTimeNoCheck(t));
 }
 
 
 // ECMA 262 - 15.9.5.19
 function DateGetUTCHours() {
-  return GetUTCHoursFrom(this);
+  var t = DATE_VALUE(this);
+  if (NUMBER_IS_NAN(t)) return t;
+  return HOUR_FROM_TIME(t);
 }
 
 
 // ECMA 262 - 15.9.5.20
 function DateGetMinutes() {
-  return GetMinutesFrom(this);
+  var t = DATE_VALUE(this);
+  if (NUMBER_IS_NAN(t)) return t;
+  return MIN_FROM_TIME(LocalTimeNoCheck(t));
 }
 
 
 // ECMA 262 - 15.9.5.21
 function DateGetUTCMinutes() {
-  return GetUTCMinutesFrom(this);
+  var t = DATE_VALUE(this);
+  return NAN_OR_MIN_FROM_TIME(t);
 }
 
 
 // ECMA 262 - 15.9.5.22
 function DateGetSeconds() {
-  return GetSecondsFrom(this);
+  var t = DATE_VALUE(this);
+  if (NUMBER_IS_NAN(t)) return t;
+  return SEC_FROM_TIME(LocalTimeNoCheck(t));
 }
 
 
 // ECMA 262 - 15.9.5.23
 function DateGetUTCSeconds() {
-  return GetUTCSecondsFrom(this);
+  var t = DATE_VALUE(this);
+  return NAN_OR_SEC_FROM_TIME(t);
 }
 
 
 // ECMA 262 - 15.9.5.24
 function DateGetMilliseconds() {
-  return GetMillisecondsFrom(this);
+  var t = DATE_VALUE(this);
+  if (NUMBER_IS_NAN(t)) return t;
+  return MS_FROM_TIME(LocalTimeNoCheck(t));
 }
 
 
 // ECMA 262 - 15.9.5.25
 function DateGetUTCMilliseconds() {
-  return GetUTCMillisecondsFrom(this);
+  var t = DATE_VALUE(this);
+  return NAN_OR_MS_FROM_TIME(t);
 }
 
 
 // ECMA 262 - 15.9.5.26
 function DateGetTimezoneOffset() {
   var t = DATE_VALUE(this);
   if (NUMBER_IS_NAN(t)) return t;
   return (t - LocalTimeNoCheck(t)) / msPerMinute;
 }
 
@@ skipping 20 matching lines @@
   ms = ToNumber(ms);
   var time = MakeTime(HOUR_FROM_TIME(t), MIN_FROM_TIME(t), SEC_FROM_TIME(t), ms);
   return %_SetValueOf(this, TimeClip(MakeDate(DAY(t), time)));
 }
 
 
 // ECMA 262 - 15.9.5.30
 function DateSetSeconds(sec, ms) {
   var t = LocalTime(DATE_VALUE(this));
   sec = ToNumber(sec);
-  ms = %_ArgumentsLength() < 2 ? GetMillisecondsFrom(this) : ToNumber(ms);
+  ms = %_ArgumentsLength() < 2 ? NAN_OR_MS_FROM_TIME(t) : ToNumber(ms);
   var time = MakeTime(HOUR_FROM_TIME(t), MIN_FROM_TIME(t), sec, ms);
   return %_SetValueOf(this, TimeClip(UTC(MakeDate(DAY(t), time))));
 }
 
 
 // ECMA 262 - 15.9.5.31
 function DateSetUTCSeconds(sec, ms) {
   var t = DATE_VALUE(this);
   sec = ToNumber(sec);
-  ms = %_ArgumentsLength() < 2 ? GetUTCMillisecondsFrom(this) : ToNumber(ms);
+  ms = %_ArgumentsLength() < 2 ? NAN_OR_MS_FROM_TIME(t) : ToNumber(ms);
   var time = MakeTime(HOUR_FROM_TIME(t), MIN_FROM_TIME(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(DATE_VALUE(this));
   min = ToNumber(min);
   var argc = %_ArgumentsLength();
-  sec = argc < 2 ? GetSecondsFrom(this) : ToNumber(sec);
-  ms = argc < 3 ? GetMillisecondsFrom(this) : ToNumber(ms);
+  sec = argc < 2 ? NAN_OR_SEC_FROM_TIME(t) : ToNumber(sec);
+  ms = argc < 3 ? NAN_OR_MS_FROM_TIME(t) : ToNumber(ms);
   var time = MakeTime(HOUR_FROM_TIME(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 = DATE_VALUE(this);
   min = ToNumber(min);
   var argc = %_ArgumentsLength();
-  sec = argc < 2 ? GetUTCSecondsFrom(this) : ToNumber(sec);
-  ms = argc < 3 ? GetUTCMillisecondsFrom(this) : ToNumber(ms);
+  sec = argc < 2 ? NAN_OR_SEC_FROM_TIME(t) : ToNumber(sec);
+  ms = argc < 3 ? NAN_OR_MS_FROM_TIME(t) : ToNumber(ms);
   var time = MakeTime(HOUR_FROM_TIME(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(DATE_VALUE(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);
+  min = argc < 2 ? NAN_OR_MIN_FROM_TIME(t) : ToNumber(min);
+  sec = argc < 3 ? NAN_OR_SEC_FROM_TIME(t) : ToNumber(sec);
+  ms = argc < 4 ? NAN_OR_MS_FROM_TIME(t) : 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 = DATE_VALUE(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);
+  min = argc < 2 ? NAN_OR_MIN_FROM_TIME(t) : ToNumber(min);
+  sec = argc < 3 ? NAN_OR_SEC_FROM_TIME(t) : ToNumber(sec);
+  ms = argc < 4 ? NAN_OR_MS_FROM_TIME(t) : 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(DATE_VALUE(this));
   date = ToNumber(date);
   var day = MakeDay(YEAR_FROM_TIME(t), MONTH_FROM_TIME(t), date);
   return %_SetValueOf(this, TimeClip(UTC(MakeDate(day, TimeWithinDay(t)))));
 }
 
 
 // ECMA 262 - 15.9.5.37
 function DateSetUTCDate(date) {
   var t = DATE_VALUE(this);
   date = ToNumber(date);
   var day = MakeDay(YEAR_FROM_TIME(t), MONTH_FROM_TIME(t), date);
   return %_SetValueOf(this, TimeClip(MakeDate(day, TimeWithinDay(t))));
 }
 
 
 // ECMA 262 - 15.9.5.38
 function DateSetMonth(month, date) {
   var t = LocalTime(DATE_VALUE(this));
   month = ToNumber(month);
-  date = %_ArgumentsLength() < 2 ? GetDateFrom(this) : ToNumber(date);
+  date = %_ArgumentsLength() < 2 ? NAN_OR_DATE_FROM_TIME(t) : ToNumber(date);
   var day = MakeDay(YEAR_FROM_TIME(t), month, date);
   return %_SetValueOf(this, TimeClip(UTC(MakeDate(day, TimeWithinDay(t)))));
 }
 
 
 // ECMA 262 - 15.9.5.39
 function DateSetUTCMonth(month, date) {
   var t = DATE_VALUE(this);
   month = ToNumber(month);
-  date = %_ArgumentsLength() < 2 ? GetUTCDateFrom(this) : ToNumber(date);
+  date = %_ArgumentsLength() < 2 ? NAN_OR_DATE_FROM_TIME(t) : ToNumber(date);
   var day = MakeDay(YEAR_FROM_TIME(t), month, date);
   return %_SetValueOf(this, TimeClip(MakeDate(day, TimeWithinDay(t))));
 }
 
 
 // ECMA 262 - 15.9.5.40
 function DateSetFullYear(year, month, date) {
   var t = DATE_VALUE(this);
   t = NUMBER_IS_NAN(t) ? 0 : LocalTimeNoCheck(t);
   year = ToNumber(year);
@@ skipping 145 matching lines @@
     "toGMTString", DateToGMTString,
     "toUTCString", DateToUTCString,
     "getYear", DateGetYear,
     "setYear", DateSetYear,
     "toISOString", DateToISOString,
     "toJSON", DateToJSON
   ));
 }
 
 SetupDate();