mozilla
/
pjs
зеркало из https://github.com/mozilla/pjs.git
1
0
Форкнуть 0
Код Задачи Пакеты Проекты Релизы Вики Активность
pjs/js2/src/js2date.cpp

1489 строки
48 KiB
C++
Исходник Ответственный История

/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
*
* The contents of this file are subject to the Netscape Public
* License Version 1.1 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.mozilla.org/NPL/
*
* Software distributed under the License is distributed on an "AS
* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
* implied. See the License for the specific language governing
* rights and limitations under the License.
*
* The Original Code is the JavaScript 2 Prototype.
*
* The Initial Developer of the Original Code is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All
* Rights Reserved.
*
* Contributor(s):
*
* Alternatively, the contents of this file may be used under the
* terms of the GNU Public License (the "GPL"), in which case the
* provisions of the GPL are applicable instead of those above.
* If you wish to allow use of your version of this file only
* under the terms of the GPL and not to allow others to use your
* version of this file under the NPL, indicate your decision by
* deleting the provisions above and replace them with the notice
* and other provisions required by the GPL. If you do not delete
* the provisions above, a recipient may use your version of this
* file under either the NPL or the GPL.
*/
#ifdef _WIN32
#include "msvc_pragma.h"
#endif
#include <algorithm>
#include <list>
#include <map>
#include <stack>
#include <assert.h>
#include <ctype.h>
#include "world.h"
#include "utilities.h"
#include "js2value.h"
#include "numerics.h"
#include "reader.h"
#include "parser.h"
#include "regexp.h"
#include "js2engine.h"
#include "bytecodecontainer.h"
#include "js2metadata.h"
#include "jslong.h"
#include "fdlibm_ns.h"
#include "prmjtime.h"
namespace JavaScript {
namespace MetaData {
#define HalfTimeDomain 8.64e15
#define HoursPerDay 24.0
#define MinutesPerDay (HoursPerDay * MinutesPerHour)
#define MinutesPerHour 60.0
#define SecondsPerDay (MinutesPerDay * SecondsPerMinute)
#define SecondsPerHour (MinutesPerHour * SecondsPerMinute)
#define SecondsPerMinute 60.0
#ifdef XP_PC
/* Work around msvc double optimization bug by making these runtime values; if
* they're available at compile time, msvc optimizes division by them by
* computing the reciprocal and multiplying instead of dividing - this loses
* when the reciprocal isn't representable in a double.
*/
static float64 msPerSecond = 1000.0;
static float64 msPerDay = SecondsPerDay * 1000.0;
static float64 msPerHour = SecondsPerHour * 1000.0;
static float64 msPerMinute = SecondsPerMinute * 1000.0;
#else
#define msPerDay (SecondsPerDay * msPerSecond)
#define msPerHour (SecondsPerHour * msPerSecond)
#define msPerMinute (SecondsPerMinute * msPerSecond)
#define msPerSecond 1000.0
#endif
/* LocalTZA gets set by initDateObject() */
static float64 LocalTZA;
/*
* The following array contains the day of year for the first day of
* each month, where index 0 is January, and day 0 is January 1.
*/
static float64 firstDayOfMonth[2][12] = {
{0.0, 31.0, 59.0, 90.0, 120.0, 151.0, 181.0, 212.0, 243.0, 273.0, 304.0, 334.0},
{0.0, 31.0, 60.0, 91.0, 121.0, 152.0, 182.0, 213.0, 244.0, 274.0, 305.0, 335.0}
};
#define MakeTime(hour, min, sec, ms) (((hour * MinutesPerHour + min) * SecondsPerMinute + sec) * msPerSecond + ms)
#define MakeDate(day, time) (day * msPerDay + time)
#define Day(t) floor((t) / msPerDay)
#define TIMECLIP(d) ((JSDOUBLE_IS_FINITE(d) \
&& !((d < 0 ? -d : d) > HalfTimeDomain)) \
? JS2Engine::truncateFloat64(d + (+0.)) : nan)
#define LocalTime(t) ((t) + LocalTZA + DaylightSavingTA(t))
#define DayFromMonth(m, leap) firstDayOfMonth[leap][(int32)m];
#define DayFromYear(y) (365 * ((y)-1970) + fd::floor(((y)-1969)/4.0) \
- fd::floor(((y)-1901)/100.0) + fd::floor(((y)-1601)/400.0))
#define TimeFromYear(y) (DayFromYear(y) * msPerDay)
#define DaysInYear(y) ((y) % 4 == 0 && ((y) % 100 || ((y) % 400 == 0)) ? 366 : 365)
#define InLeapYear(t) (bool)(DaysInYear(YearFromTime(t)) == 366)
#define DayWithinYear(t, year) ((int32)(Day(t) - DayFromYear(year)))
typedef enum formatspec {
FORMATSPEC_FULL, FORMATSPEC_DATE, FORMATSPEC_TIME
} formatspec;
/* constants for toString, toUTCString */
static char js_NaN_date_str[] = "Invalid Date";
static const char* days[] =
{
"Sun","Mon","Tue","Wed","Thu","Fri","Sat"
};
static const char* months[] =
{
"Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"
};
static float64 DaylightSavingTA(float64 t)
{
volatile int64 PR_t;
int64 ms2us;
int64 offset;
float64 result;
/* abort if NaN */
if (JSDOUBLE_IS_NaN(t))
return t;
/* put our t in an LL, and map it to usec for prtime */
JSLL_D2L(PR_t, t);
JSLL_I2L(ms2us, PRMJ_USEC_PER_MSEC);
JSLL_MUL(PR_t, PR_t, ms2us);
offset = PRMJ_DSTOffset(PR_t);
JSLL_DIV(offset, offset, ms2us);
JSLL_L2D(result, offset);
return result;
}
static float64 UTC(float64 t)
{
return t - LocalTZA - DaylightSavingTA(t - LocalTZA);
}
static float64 MakeDay(float64 year, float64 month, float64 date)
{
float64 result;
bool leap;
float64 yearday;
float64 monthday;
year += fd::floor(month / 12);
month = fd::fmod(month, 12.0);
if (month < 0)
month += 12;
leap = (DaysInYear((int32) year) == 366);
yearday = floor(TimeFromYear(year) / msPerDay);
monthday = DayFromMonth(month, leap);
result = yearday
+ monthday
+ date - 1;
return result;
}
static float64 TimeWithinDay(float64 t)
{
float64 result;
result = fd::fmod(t, msPerDay);
if (result < 0)
result += msPerDay;
return result;
}
/* math here has to be f.p, because we need
* floor((1968 - 1969) / 4) == -1
*/
static int32 YearFromTime(float64 t)
{
int32 y = (int32) floor(t /(msPerDay*365.2425)) + 1970;
float64 t2 = (float64) TimeFromYear(y);
if (t2 > t) {
y--;
} else {
if (t2 + msPerDay * DaysInYear(y) <= t)
y++;
}
return y;
}
static int32 MonthFromTime(float64 t)
{
int32 d, step;
int32 year = YearFromTime(t);
d = DayWithinYear(t, year);
if (d < (step = 31))
return 0;
step += (InLeapYear(t) ? 29 : 28);
if (d < step)
return 1;
if (d < (step += 31))
return 2;
if (d < (step += 30))
return 3;
if (d < (step += 31))
return 4;
if (d < (step += 30))
return 5;
if (d < (step += 31))
return 6;
if (d < (step += 31))
return 7;
if (d < (step += 30))
return 8;
if (d < (step += 31))
return 9;
if (d < (step += 30))
return 10;
return 11;
}
static int32 DateFromTime(float64 t)
{
int32 d, step, next;
int32 year = YearFromTime(t);
d = DayWithinYear(t, year);
if (d <= (next = 30))
return d + 1;
step = next;
next += (InLeapYear(t) ? 29 : 28);
if (d <= next)
return d - step;
step = next;
if (d <= (next += 31))
return d - step;
step = next;
if (d <= (next += 30))
return d - step;
step = next;
if (d <= (next += 31))
return d - step;
step = next;
if (d <= (next += 30))
return d - step;
step = next;
if (d <= (next += 31))
return d - step;
step = next;
if (d <= (next += 31))
return d - step;
step = next;
if (d <= (next += 30))
return d - step;
step = next;
if (d <= (next += 31))
return d - step;
step = next;
if (d <= (next += 30))
return d - step;
step = next;
return d - step;
}
static int32 WeekDay(float64 t)
{
int32 result;
result = (int32) Day(t) + 4;
result = result % 7;
if (result < 0)
result += 7;
return result;
}
static float64 *Date_getProlog(JS2Metadata *meta, const js2val thisValue)
{
if (!JS2VAL_IS_OBJECT(thisValue)
|| (JS2VAL_TO_OBJECT(thisValue)->kind != SimpleInstanceKind)
|| ((checked_cast<SimpleInstance *>(JS2VAL_TO_OBJECT(thisValue)))->type != meta->dateClass))
meta->reportError(Exception::typeError, "You really need a date", meta->engine->errorPos());
DateInstance *dateInst = checked_cast<DateInstance *>(JS2VAL_TO_OBJECT(thisValue));
return &dateInst->ms;
}
/* for use by date_parse */
static char* wtb[] = {
"am", "pm",
"monday", "tuesday", "wednesday", "thursday", "friday",
"saturday", "sunday",
"january", "february", "march", "april", "may", "june",
"july", "august", "september", "october", "november", "december",
"gmt", "ut", "utc",
"est", "edt",
"cst", "cdt",
"mst", "mdt",
"pst", "pdt"
/* time zone table needs to be expanded */
};
static int ttb[] = {
-1, -2, 0, 0, 0, 0, 0, 0, 0, /* AM/PM */
2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13,
10000 + 0, 10000 + 0, 10000 + 0, /* GMT/UT/UTC */
10000 + 5 * 60, 10000 + 4 * 60, /* EST/EDT */
10000 + 6 * 60, 10000 + 5 * 60, /* CST/CDT */
10000 + 7 * 60, 10000 + 6 * 60, /* MST/MDT */
10000 + 8 * 60, 10000 + 7 * 60 /* PST/PDT */
};
static int32 HourFromTime(float64 t)
{
int32 result = (int32)fd::fmod(floor(t/msPerHour), HoursPerDay);
if (result < 0)
result += (int32)HoursPerDay;
return result;
}
static int32 MinFromTime(float64 t)
{
int32 result = (int32)fd::fmod(floor(t / msPerMinute), MinutesPerHour);
if (result < 0)
result += (int32)MinutesPerHour;
return result;
}
static int32 SecFromTime(float64 t)
{
int32 result = (int32)fd::fmod(floor(t / msPerSecond), SecondsPerMinute);
if (result < 0)
result += (int32)SecondsPerMinute;
return result;
}
static int32 msFromTime(float64 t)
{
int32 result = (int32)fd::fmod(t, msPerSecond);
if (result < 0)
result += (int32)msPerSecond;
return result;
}
static js2val Date_makeTime(JS2Metadata *meta, const js2val thisValue, js2val *argv, uint32 argc, uint32 maxargs, bool local)
{
uint32 i;
float64 args[4], *argp, *stop;
float64 hour, min, sec, msec;
float64 lorutime; /* Local or UTC version of *date */
float64 msec_time;
float64 result;
float64 *date = Date_getProlog(meta, thisValue);
result = *date;
/* just return NaN if the date is already NaN */
if (JSDOUBLE_IS_NaN(result))
return meta->engine->nanValue;
if (argc == 0) {
*date = nan;
return meta->engine->nanValue;
}
else if (argc > maxargs)
argc = maxargs; /* clamp argc */
for (i = 0; i < argc; i++) {
float64 f = meta->toFloat64(argv[i]);
if (JSDOUBLE_IS_NaN(f)) {
*date = nan;
return meta->engine->nanValue;
}
args[i] = JS2Engine::truncateFloat64(f);
}
if (local)
lorutime = LocalTime(result);
else
lorutime = result;
argp = args;
stop = argp + argc;
if ((maxargs >= 4) && (argp < stop))
hour = *argp++;
else
hour = HourFromTime(lorutime);
if ((maxargs >= 3) && (argp < stop))
min = *argp++;
else
min = MinFromTime(lorutime);
if ((maxargs >= 2) && (argp < stop))
sec = *argp++;
else
sec = SecFromTime(lorutime);
if ((maxargs >= 1) && (argp < stop))
msec = *argp;
else
msec = msFromTime(lorutime);
msec_time = MakeTime(hour, min, sec, msec);
result = MakeDate(Day(lorutime), msec_time);
if (local)
result = UTC(result);
*date = TIMECLIP(result);
return meta->engine->allocNumber(*date);
}
static js2val Date_makeDate(JS2Metadata *meta, const js2val thisValue, js2val *argv, uint32 argc, uint32 maxargs, bool local)
{
uint32 i;
float64 lorutime; /* local or UTC version of *date */
float64 args[3], *argp, *stop;
float64 year, month, day;
float64 result;
float64 *date = Date_getProlog(meta, thisValue);
result = *date;
/* see complaint about ECMA in date_MakeTime */
if (argc == 0) {
*date = nan;
return meta->engine->nanValue;
}
else
if (argc > maxargs)
argc = maxargs; /* clamp argc */
for (i = 0; i < argc; i++) {
float64 f = meta->toFloat64(argv[i]);
if (JSDOUBLE_IS_NaN(f)) {
*date = nan;
return meta->engine->nanValue;
}
args[i] = (float64)(JS2Engine::float64toInt32(f));
}
/* return NaN if date is NaN and we're not setting the year,
* If we are, use 0 as the time. */
if (!(JSDOUBLE_IS_FINITE(result))) {
if (argc < 3)
return meta->engine->nanValue;
else
lorutime = +0.;
} else {
if (local)
lorutime = LocalTime(result);
else
lorutime = result;
}
argp = args;
stop = argp + argc;
if (maxargs >= 3 && argp < stop)
year = *argp++;
else
year = YearFromTime(lorutime);
if (maxargs >= 2 && argp < stop)
month = *argp++;
else
month = MonthFromTime(lorutime);
if (maxargs >= 1 && argp < stop)
day = *argp++;
else
day = DateFromTime(lorutime);
day = MakeDay(year, month, day); /* day within year */
result = MakeDate(day, TimeWithinDay(lorutime));
if (local)
result = UTC(result);
*date = TIMECLIP(result);
return meta->engine->allocNumber(*date);
}
/* find UTC time from given date... no 1900 correction! */
static float64 date_msecFromDate(float64 year, float64 mon, float64 mday, float64 hour, float64 min, float64 sec, float64 msec)
{
float64 day;
float64 msec_time;
float64 result;
day = MakeDay(year, mon, mday);
msec_time = MakeTime(hour, min, sec, msec);
result = MakeDate(day, msec_time);
return result;
}
static float64 date_parseString(const String &s)
{
float64 msec;
int year = -1;
int mon = -1;
int mday = -1;
int hour = -1;
int min = -1;
int sec = -1;
int c = -1;
uint32 i = 0;
int n = -1;
float64 tzoffset = -1; /* was an int, overflowed on win16!!! */
int prevc = 0;
uint32 limit = 0;
bool seenplusminus = false;
limit = s.length();
if (limit == 0)
goto syntax;
while (i < limit) {
c = s[i];
i++;
if (c <= ' ' || c == ',' || c == '-') {
if (c == '-' && '0' <= s[i] && s[i] <= '9') {
prevc = c;
}
continue;
}
if (c == '(') { /* comments) */
int depth = 1;
while (i < limit) {
c = s[i];
i++;
if (c == '(') depth++;
else if (c == ')')
if (--depth <= 0)
break;
}
continue;
}
if ('0' <= c && c <= '9') {
n = c - '0';
while (i < limit && '0' <= (c = s[i]) && c <= '9') {
n = n * 10 + c - '0';
i++;
}
/* allow TZA before the year, so
* 'Wed Nov 05 21:49:11 GMT-0800 1997'
* works */
/* uses of seenplusminus allow : in TZA, so Java
* no-timezone style of GMT+4:30 works
*/
if ((prevc == '+' || prevc == '-')/* && year>=0 */) {
/* make ':' case below change tzoffset */
seenplusminus = true;
/* offset */
if (n < 24)
n = n * 60; /* EG. "GMT-3" */
else
n = n % 100 + n / 100 * 60; /* eg "GMT-0430" */
if (prevc == '+') /* plus means east of GMT */
n = -n;
if (tzoffset != 0 && tzoffset != -1)
goto syntax;
tzoffset = n;
} else if (n >= 70 ||
(prevc == '/' && mon >= 0 && mday >= 0 && year < 0)) {
if (year >= 0)
goto syntax;
else if (c <= ' ' || c == ',' || c == '/' || i >= limit)
year = n < 100 ? n + 1900 : n;
else
goto syntax;
} else if (c == ':') {
if (hour < 0)
hour = /*byte*/ n;
else if (min < 0)
min = /*byte*/ n;
else
goto syntax;
} else if (c == '/') {
if (mon < 0)
mon = /*byte*/ n-1;
else if (mday < 0)
mday = /*byte*/ n;
else
goto syntax;
} else if (i < limit && c != ',' && c > ' ' && c != '-') {
goto syntax;
} else if (seenplusminus && n < 60) { /* handle GMT-3:30 */
if (tzoffset < 0)
tzoffset -= n;
else
tzoffset += n;
} else if (hour >= 0 && min < 0) {
min = /*byte*/ n;
} else if (min >= 0 && sec < 0) {
sec = /*byte*/ n;
} else if (mday < 0) {
mday = /*byte*/ n;
} else {
goto syntax;
}
prevc = 0;
} else if (c == '/' || c == ':' || c == '+' || c == '-') {
prevc = c;
} else {
uint32 st = i - 1;
int k;
while (i < limit) {
c = s[i];
if (!(('A' <= c && c <= 'Z') || ('a' <= c && c <= 'z')))
break;
i++;
}
if (i <= st + 1)
goto syntax;
for (k = (sizeof(wtb)/sizeof(char*)); --k >= 0;)
if (regionMatches(wtb[k], s, st, i-st, 1)) {
int action = ttb[k];
if (action != 0) {
if (action < 0) {
/*
* AM/PM. Count 12:30 AM as 00:30, 12:30 PM as
* 12:30, instead of blindly adding 12 if PM.
*/
ASSERT(action == -1 || action == -2);
if (hour > 12 || hour < 0) {
goto syntax;
} else {
if (action == -1 && hour == 12) { /* am */
hour = 0;
} else if (action == -2 && hour != 12) { /* pm */
hour += 12;
}
}
} else
if (action <= 13) { /* month! */
if (mon < 0) {
mon = /*byte*/ (action - 2);
}
else {
goto syntax;
}
} else {
tzoffset = action - 10000;
}
}
break;
}
if (k < 0)
goto syntax;
prevc = 0;
}
} // while (i < limit)
if (year < 0 || mon < 0 || mday < 0)
goto syntax;
if (sec < 0)
sec = 0;
if (min < 0)
min = 0;
if (hour < 0)
hour = 0;
if (tzoffset == -1) { /* no time zone specified, have to use local */
float64 msec_time;
msec_time = date_msecFromDate(year, mon, mday, hour, min, sec, 0);
return UTC(msec_time);
}
msec = date_msecFromDate(year, mon, mday, hour, min, sec, 0);
msec += tzoffset * msPerMinute;
return msec;
syntax:
/* syntax error */
return nan;
}
/* for Date.toLocaleString; interface to PRMJTime date struct.
* If findEquivalent is true, then try to map the year to an equivalent year
* that's in range.
*/
static void new_explode(float64 timeval, PRMJTime *split, bool findEquivalent)
{
int32 year = YearFromTime(timeval);
int16 adjustedYear;
/* If the year doesn't fit in a PRMJTime, find something to do about it. */
if (year > 32767 || year < -32768) {
if (findEquivalent) {
/* We're really just trying to get a timezone string; map the year
* to some equivalent year in the range 0 to 2800. Borrowed from
* A. D. Olsen.
*/
int32 cycles;
#define CYCLE_YEARS 2800L
cycles = (year >= 0) ? year / CYCLE_YEARS
: -1 - (-1 - year) / CYCLE_YEARS;
adjustedYear = (int16)(year - cycles * CYCLE_YEARS);
} else {
/* Clamp it to the nearest representable year. */
adjustedYear = (int16)((year > 0) ? 32767 : - 32768);
}
} else {
adjustedYear = (int16)year;
}
split->tm_usec = (uint32) msFromTime(timeval) * 1000;
split->tm_sec = (uint8) SecFromTime(timeval);
split->tm_min = (uint8) MinFromTime(timeval);
split->tm_hour = (uint8) HourFromTime(timeval);
split->tm_mday = (uint8) DateFromTime(timeval);
split->tm_mon = (uint8) MonthFromTime(timeval);
split->tm_wday = (uint8) WeekDay(timeval);
split->tm_year = (uint16) adjustedYear;
split->tm_yday = (uint16) DayWithinYear(timeval, year);
/* not sure how this affects things, but it doesn't seem
to matter. */
split->tm_isdst = (DaylightSavingTA(timeval) != 0);
}
/* helper function */
static js2val Date_format(JS2Metadata *meta, float64 date, formatspec format)
{
StringFormatter outf;
char tzbuf[100];
bool usetz;
size_t i, tzlen, bytesStored;
PRMJTime split;
if (!JSDOUBLE_IS_FINITE(date)) {
outf << js_NaN_date_str;
} else {
float64 local = LocalTime(date);
/* offset from GMT in minutes. The offset includes daylight savings,
if it applies. */
int32 minutes = (int32)fd::floor((LocalTZA + DaylightSavingTA(date)) / msPerMinute);
/* map 510 minutes to 0830 hours */
int32 offset = (minutes / 60) * 100 + minutes % 60;
/* print as "Wed Nov 05 19:38:03 GMT-0800 (PST) 1997" The TZA is
* printed as 'GMT-0800' rather than as 'PST' to avoid
* operating-system dependence on strftime (which
* PRMJ_FormatTimeUSEnglish calls, for %Z only.) win32 prints
* PST as 'Pacific Standard Time.' This way we always know
* what we're getting, and can parse it if we produce it.
* The OS TZA string is included as a comment.
*/
/* get a timezone string from the OS to include as a
comment. */
new_explode(date, &split, true);
bytesStored = PRMJ_FormatTime(tzbuf, sizeof tzbuf, "(%Z)", &split);
/* Decide whether to use the resulting timezone string.
*
* Reject it if it contains any non-ASCII, non-alphanumeric characters.
* It's then likely in some other character encoding, and we probably
* won't display it correctly.
*/
if (bytesStored > 0) {
usetz = true;
tzlen = strlen(tzbuf);
if (tzlen > 100) {
usetz = false;
} else {
for (i = 0; i < tzlen; i++) {
int16 c = tzbuf[i];
if (c > 127 ||
!(isalpha(c) || isdigit(c) ||
c == ' ' || c == '(' || c == ')')) {
usetz = false;
}
}
}
/* Also reject it if it's not parenthesized or if it's '()'. */
if (tzbuf[0] != '(' || tzbuf[1] == ')')
usetz = false;
}
else
usetz = false;
switch (format) {
case FORMATSPEC_FULL:
/*
* Avoid dependence on PRMJ_FormatTimeUSEnglish, because it
* requires a PRMJTime... which only has 16-bit years. Sub-ECMA.
*/
/* Tue Oct 31 09:41:40 GMT-0800 (PST) 2000 */
printFormat(outf, "%s %s %.2d %.2d:%.2d:%.2d GMT%+.4d %s%s%.4d",
days[WeekDay(local)],
months[MonthFromTime(local)],
DateFromTime(local),
HourFromTime(local),
MinFromTime(local),
SecFromTime(local),
offset,
usetz ? tzbuf : "",
usetz ? " " : "",
YearFromTime(local));
break;
case FORMATSPEC_DATE:
/* Tue Oct 31 2000 */
printFormat(outf, "%s %s %.2d %.4d",
days[WeekDay(local)],
months[MonthFromTime(local)],
DateFromTime(local),
YearFromTime(local));
break;
case FORMATSPEC_TIME:
/* 09:41:40 GMT-0800 (PST) */
printFormat(outf, "%.2d:%.2d:%.2d GMT%+.4d%s%s",
HourFromTime(local),
MinFromTime(local),
SecFromTime(local),
offset,
usetz ? " " : "",
usetz ? tzbuf : "");
break;
}
}
return meta->engine->allocString(outf.getString());
}
js2val Date_Call(JS2Metadata *meta, const js2val /* thisValue */, js2val *argv, uint32 argc)
{
int64 us, ms, us2ms;
float64 msec_time;
us = PRMJ_Now();
JSLL_UI2L(us2ms, PRMJ_USEC_PER_MSEC);
JSLL_DIV(ms, us, us2ms);
JSLL_L2D(msec_time, ms);
return Date_format(meta, msec_time, FORMATSPEC_FULL);
}
#define MAXARGS 7
js2val Date_Constructor(JS2Metadata *meta, const js2val /* thisValue */, js2val *argv, uint32 argc)
{
js2val thatValue = OBJECT_TO_JS2VAL(new DateInstance(meta, meta->dateClass->prototype, meta->dateClass));
DateInstance *thisInst = checked_cast<DateInstance *>(JS2VAL_TO_OBJECT(thatValue));
RootKeeper rk(&thisInst);
/* Date called as constructor */
if (argc == 0) {
int64 us, ms, us2ms;
float64 msec_time;
us = PRMJ_Now();
JSLL_UI2L(us2ms, PRMJ_USEC_PER_MSEC);
JSLL_DIV(ms, us, us2ms);
JSLL_L2D(msec_time, ms);
thisInst->ms = msec_time;
}
else {
if (argc == 1) {
if (!JS2VAL_IS_STRING(argv[0])) {
/* the argument is a millisecond number */
float64 d = meta->toFloat64(argv[0]);
thisInst->ms = TIMECLIP(d);
} else {
/* the argument is a string; parse it. */
const String *str = meta->toString(argv[0]);
float64 d = date_parseString(*str);
thisInst->ms = TIMECLIP(d);
}
}
else {
float64 array[MAXARGS];
uint32 loop;
float64 day;
float64 msec_time;
for (loop = 0; loop < MAXARGS; loop++) {
if (loop < argc) {
float64 double_arg = meta->toFloat64(argv[loop]);
/* if any arg is NaN, make a NaN date object
and return */
if (!JSDOUBLE_IS_FINITE(double_arg)) {
thisInst->ms = nan;
return thatValue;
}
array[loop] = JS2Engine::float64toInt32(double_arg);
} else {
if (loop == 2) {
array[loop] = 1; /* Default the date argument to 1. */
} else {
array[loop] = 0;
}
}
}
/* adjust 2-digit years into the 20th century */
if (array[0] >= 0 && array[0] <= 99)
array[0] += 1900;
day = MakeDay(array[0], array[1], array[2]);
msec_time = MakeTime(array[3], array[4], array[5], array[6]);
msec_time = MakeDate(day, msec_time);
msec_time = UTC(msec_time);
thisInst->ms = TIMECLIP(msec_time);
}
}
return thatValue;
}
js2val Date_parse(JS2Metadata *meta, const js2val /*thisValue*/, js2val *argv, uint32 /*argc*/)
{
const String *str = meta->toString(argv[0]);
float64 d = date_parseString(*str);
d = TIMECLIP(d);
return meta->engine->allocNumber(d);
}
js2val Date_UTC(JS2Metadata *meta, const js2val /*thisValue*/, js2val *argv, uint32 argc)
{
float64 array[MAXARGS];
uint32 loop;
float64 d;
for (loop = 0; loop < MAXARGS; loop++) {
if (loop < argc) {
d = meta->toFloat64(argv[loop]);
if (!JSDOUBLE_IS_FINITE(d))
return meta->engine->allocNumber(d);
array[loop] = floor(d);
}
else
array[loop] = 0;
}
/* adjust 2-digit years into the 20th century */
if ((array[0] >= 0) && (array[0] <= 99))
array[0] += 1900;
/* if we got a 0 for 'date' (which is out of range)
* pretend it's a 1. (So Date.UTC(1972, 5) works) */
if (array[2] < 1)
array[2] = 1;
d = date_msecFromDate(array[0], array[1], array[2],
array[3], array[4], array[5], array[6]);
d = TIMECLIP(d);
return meta->engine->allocNumber(d);
}
static js2val Date_toGMTString(JS2Metadata *meta, const js2val thisValue, js2val * /*argv*/, uint32 /*argc*/)
{
StringFormatter buf;
float64 *date = Date_getProlog(meta, thisValue);
if (!JSDOUBLE_IS_FINITE(*date)) {
buf << js_NaN_date_str;
} else {
float64 temp = *date;
/* Avoid dependence on PRMJ_FormatTimeUSEnglish, because it
* requires a PRMJTime... which only has 16-bit years. Sub-ECMA.
*/
printFormat(buf, "%s, %.2d %s %.4d %.2d:%.2d:%.2d GMT",
days[WeekDay(temp)],
DateFromTime(temp),
months[MonthFromTime(temp)],
YearFromTime(temp),
HourFromTime(temp),
MinFromTime(temp),
SecFromTime(temp));
}
return meta->engine->allocString(buf.getString());
}
static js2val Date_toLocaleHelper(JS2Metadata *meta, const js2val thisValue, js2val * /*argv*/, uint32 /*argc*/, char *format)
{
StringFormatter outf;
char buf[100];
PRMJTime split;
float64 *date = Date_getProlog(meta, thisValue);
if (!JSDOUBLE_IS_FINITE(*date)) {
outf << js_NaN_date_str;
} else {
uint32 result_len;
float64 local = LocalTime(*date);
new_explode(local, &split, false);
/* let PRMJTime format it. */
result_len = PRMJ_FormatTime(buf, sizeof buf, format, &split);
/* If it failed, default to toString. */
if (result_len == 0)
return Date_format(meta, *date, FORMATSPEC_FULL);
/* Hacked check against undesired 2-digit year 00/00/00 form. */
if ((buf[result_len - 3] == '/')
&& isdigit(buf[result_len - 2]) && isdigit(buf[result_len - 1])) {
printString(outf, buf + (result_len - 2), buf + ((sizeof buf) - (result_len - 2)) );
printFormat(outf, "%d", (int32)YearFromTime(LocalTime(*date)) );
}
else
outf << buf;
}
return meta->engine->allocString(outf.getString());
}
static js2val Date_toLocaleString(JS2Metadata *meta, const js2val thisValue, js2val *argv, uint32 argc)
{
/* Use '%#c' for windows, because '%c' is
* backward-compatible and non-y2k with msvc; '%#c' requests that a
* full year be used in the result string.
*/
return Date_toLocaleHelper(meta, thisValue, argv, argc,
#if defined(_WIN32) && !defined(__MWERKS__)
"%#c"
#else
"%c"
#endif
);
}
static js2val Date_toLocaleDateString(JS2Metadata *meta, const js2val thisValue, js2val *argv, uint32 argc)
{
/* Use '%#x' for windows, because '%x' is
* backward-compatible and non-y2k with msvc; '%#x' requests that a
* full year be used in the result string.
*/
return Date_toLocaleHelper(meta, thisValue, argv, argc,
#if defined(_WIN32) && !defined(__MWERKS__)
"%#x"
#else
"%x"
#endif
);
}
static js2val Date_toLocaleTimeString(JS2Metadata *meta, const js2val thisValue, js2val *argv, uint32 argc)
{
return Date_toLocaleHelper(meta, thisValue, argv, argc, "%X");
}
static js2val Date_toTimeString(JS2Metadata *meta, const js2val thisValue, js2val * /*argv*/, uint32 /*argc*/)
{
float64 *date = Date_getProlog(meta, thisValue);
return Date_format(meta, *date, FORMATSPEC_TIME);
}
static js2val Date_toDateString(JS2Metadata *meta, const js2val thisValue, js2val * /*argv*/, uint32 /*argc*/)
{
float64 *date = Date_getProlog(meta, thisValue);
return Date_format(meta, *date, FORMATSPEC_DATE);
}
static js2val Date_toString(JS2Metadata *meta, const js2val thisValue, js2val * /*argv*/, uint32 /*argc*/)
{
float64 *date = Date_getProlog(meta, thisValue);
return Date_format(meta, *date, FORMATSPEC_FULL);
}
static js2val Date_toSource(JS2Metadata *meta, const js2val thisValue, js2val * /*argv*/, uint32 /*argc*/)
{
StringFormatter buf;
float64 *date = Date_getProlog(meta, thisValue);
buf << "(new Date(" << *meta->engine->numberToString(date) << "))";
return meta->engine->allocString(buf.getString());
}
static js2val Date_getTime(JS2Metadata *meta, const js2val thisValue, js2val * /*argv*/, uint32 /*argc*/)
{
float64 *date = Date_getProlog(meta, thisValue);
return meta->engine->allocNumber(*date);
}
static js2val Date_getTimezoneOffset(JS2Metadata *meta, const js2val thisValue, js2val * /*argv*/, uint32 /*argc*/)
{
float64 result;
float64 *date = Date_getProlog(meta, thisValue);
result = *date;
/*
* Return the time zone offset in minutes for the current locale
* that is appropriate for this time. This value would be a
* constant except for daylight savings time.
*/
result = (result - LocalTime(result)) / msPerMinute;
return meta->engine->allocNumber(result);
}
static js2val Date_getYear(JS2Metadata *meta, const js2val thisValue, js2val * /*argv*/, uint32 /*argc*/)
{
float64 result;
float64 *date = Date_getProlog(meta, thisValue);
result = *date;
if (!JSDOUBLE_IS_FINITE(result))
return meta->engine->allocNumber(result);
result = YearFromTime(LocalTime(result));
#if 0
XXX
/*
* During the great date rewrite of 1.3, we tried to track the evolving ECMA
* standard, which then had a definition of getYear which always subtracted
* 1900. Which we implemented, not realizing that it was incompatible with
* the old behavior... now, rather than thrash the behavior yet again,
* we've decided to leave it with the - 1900 behavior and point people to
* the getFullYear method. But we try to protect existing scripts that
* have specified a version...
*/
if (cx->version == JSVERSION_1_0 ||
cx->version == JSVERSION_1_1 ||
cx->version == JSVERSION_1_2)
{
if (result >= 1900 && result < 2000)
result -= 1900;
} else {
result -= 1900;
}
#else
result -= 1900;
#endif
return meta->engine->allocNumber(result);
}
static js2val Date_getFullYear(JS2Metadata *meta, const js2val thisValue, js2val * /* argv */, uint32 /*argc*/)
{
float64 result = *Date_getProlog(meta, thisValue);
if (!JSDOUBLE_IS_FINITE(result))
return meta->engine->allocNumber(result);
result = YearFromTime(LocalTime(result));
return meta->engine->allocNumber(result);
}
static js2val Date_getUTCFullYear(JS2Metadata *meta, const js2val thisValue, js2val * /* argv */, uint32 /*argc*/)
{
float64 result = *Date_getProlog(meta, thisValue);
if (!JSDOUBLE_IS_FINITE(result))
return meta->engine->allocNumber(result);
result = YearFromTime(result);
return meta->engine->allocNumber(result);
}
static js2val Date_getMonth(JS2Metadata *meta, const js2val thisValue, js2val * /* argv */, uint32 /*argc*/)
{
float64 result = *Date_getProlog(meta, thisValue);
if (!JSDOUBLE_IS_FINITE(result))
return meta->engine->allocNumber(result);
result = MonthFromTime(LocalTime(result));
return meta->engine->allocNumber(result);
}
static js2val Date_getUTCMonth(JS2Metadata *meta, const js2val thisValue, js2val * /* argv */, uint32 /*argc*/)
{
float64 result = *Date_getProlog(meta, thisValue);
if (!JSDOUBLE_IS_FINITE(result))
return meta->engine->allocNumber(result);
result = MonthFromTime(result);
return meta->engine->allocNumber(result);
}
static js2val Date_getDate(JS2Metadata *meta, const js2val thisValue, js2val * /* argv */, uint32 /*argc*/)
{
float64 result = *Date_getProlog(meta, thisValue);
if (!JSDOUBLE_IS_FINITE(result))
return meta->engine->allocNumber(result);
result = DateFromTime(LocalTime(result));
return meta->engine->allocNumber(result);
}
static js2val Date_getUTCDate(JS2Metadata *meta, const js2val thisValue, js2val * /* argv */, uint32 /*argc*/)
{
float64 result = *Date_getProlog(meta, thisValue);
if (!JSDOUBLE_IS_FINITE(result))
return meta->engine->allocNumber(result);
result = DateFromTime(result);
return meta->engine->allocNumber(result);
}
static js2val Date_getDay(JS2Metadata *meta, const js2val thisValue, js2val * /* argv */, uint32 /*argc*/)
{
float64 result = *Date_getProlog(meta, thisValue);
if (!JSDOUBLE_IS_FINITE(result))
return meta->engine->allocNumber(result);
result = WeekDay(LocalTime(result));
return meta->engine->allocNumber(result);
}
static js2val Date_getUTCDay(JS2Metadata *meta, const js2val thisValue, js2val * /* argv */, uint32 /*argc*/)
{
float64 result = *Date_getProlog(meta, thisValue);
if (!JSDOUBLE_IS_FINITE(result))
return meta->engine->allocNumber(result);
result = WeekDay(result);
return meta->engine->allocNumber(result);
}
static js2val Date_getHours(JS2Metadata *meta, const js2val thisValue, js2val * /* argv */, uint32 /*argc*/)
{
float64 result = *Date_getProlog(meta, thisValue);
if (!JSDOUBLE_IS_FINITE(result))
return meta->engine->allocNumber(result);
result = HourFromTime(LocalTime(result));
return meta->engine->allocNumber(result);
}
static js2val Date_getUTCHours(JS2Metadata *meta, const js2val thisValue, js2val * /* argv */, uint32 /*argc*/)
{
float64 result = *Date_getProlog(meta, thisValue);
if (!JSDOUBLE_IS_FINITE(result))
return meta->engine->allocNumber(result);
result = HourFromTime(result);
return meta->engine->allocNumber(result);
}
static js2val Date_getMinutes(JS2Metadata *meta, const js2val thisValue, js2val * /* argv */, uint32 /*argc*/)
{
float64 result = *Date_getProlog(meta, thisValue);
if (!JSDOUBLE_IS_FINITE(result))
return meta->engine->allocNumber(result);
result = MinFromTime(LocalTime(result));
return meta->engine->allocNumber(result);
}
static js2val Date_getUTCMinutes(JS2Metadata *meta, const js2val thisValue, js2val * /* argv */, uint32 /*argc*/)
{
float64 result = *Date_getProlog(meta, thisValue);
if (!JSDOUBLE_IS_FINITE(result))
return meta->engine->allocNumber(result);
result = MinFromTime(result);
return meta->engine->allocNumber(result);
}
/* Date.getSeconds is mapped to getUTCSeconds */
static js2val Date_getUTCSeconds(JS2Metadata *meta, const js2val thisValue, js2val * /* argv */, uint32 /*argc*/)
{
float64 result = *Date_getProlog(meta, thisValue);
if (!JSDOUBLE_IS_FINITE(result))
return meta->engine->allocNumber(result);
result = SecFromTime(result);
return meta->engine->allocNumber(result);
}
/* Date.getMilliseconds is mapped to getUTCMilliseconds */
static js2val Date_getUTCMilliseconds(JS2Metadata *meta, const js2val thisValue, js2val * /* argv */, uint32 /*argc*/)
{
float64 result = *Date_getProlog(meta, thisValue);
if (!JSDOUBLE_IS_FINITE(result))
return meta->engine->allocNumber(result);
result = msFromTime(result);
return meta->engine->allocNumber(result);
}
static js2val Date_setTime(JS2Metadata *meta, const js2val thisValue, js2val argv[], uint32 /*argc*/)
{
float64 *date = Date_getProlog(meta, thisValue);
float64 result = meta->toFloat64(argv[0]);
*date = TIMECLIP(result);
return meta->engine->allocNumber(*date);
}
static js2val Date_setYear(JS2Metadata *meta, const js2val thisValue, js2val argv[], uint32 /*argc*/)
{
float64 t;
float64 year;
float64 day;
float64 result;
float64 *date = Date_getProlog(meta, thisValue);
result = *date;
year = meta->toFloat64(argv[0]);
if (!JSDOUBLE_IS_FINITE(year)) {
*date = nan;
return meta->engine->allocNumber(*date);
}
year = JS2Engine::float64toInt32(year);
if (!JSDOUBLE_IS_FINITE(result)) {
t = +0.0;
} else {
t = LocalTime(result);
}
if (year >= 0 && year <= 99)
year += 1900;
day = MakeDay(year, MonthFromTime(t), DateFromTime(t));
result = MakeDate(day, TimeWithinDay(t));
result = UTC(result);
*date = TIMECLIP(result);
return meta->engine->allocNumber(*date);
}
static js2val Date_setFullYear(JS2Metadata *meta, const js2val thisValue, js2val argv[], uint32 argc)
{
return Date_makeDate(meta, thisValue, argv, argc, 3, true);
}
static js2val Date_setUTCFullYear(JS2Metadata *meta, const js2val thisValue, js2val argv[], uint32 argc)
{
return Date_makeDate(meta, thisValue, argv, argc, 3, false);
}
static js2val Date_setMonth(JS2Metadata *meta, const js2val thisValue, js2val argv[], uint32 argc)
{
return Date_makeDate(meta, thisValue, argv, argc, 2, true);
}
static js2val Date_setUTCMonth(JS2Metadata *meta, const js2val thisValue, js2val argv[], uint32 argc)
{
return Date_makeDate(meta, thisValue, argv, argc, 2, false);
}
static js2val Date_setDate(JS2Metadata *meta, const js2val thisValue, js2val argv[], uint32 argc)
{
return Date_makeDate(meta, thisValue, argv, argc, 1, true);
}
static js2val Date_setUTCDate(JS2Metadata *meta, const js2val thisValue, js2val argv[], uint32 argc)
{
return Date_makeDate(meta, thisValue, argv, argc, 1, false);
}
static js2val Date_setHours(JS2Metadata *meta, const js2val thisValue, js2val argv[], uint32 argc)
{
return Date_makeTime(meta, thisValue, argv, argc, 4, true);
}
static js2val Date_setUTCHours(JS2Metadata *meta, const js2val thisValue, js2val argv[], uint32 argc)
{
return Date_makeTime(meta, thisValue, argv, argc, 4, false);
}
static js2val Date_setMinutes(JS2Metadata *meta, const js2val thisValue, js2val argv[], uint32 argc)
{
return Date_makeTime(meta, thisValue, argv, argc, 3, true);
}
static js2val Date_setUTCMinutes(JS2Metadata *meta, const js2val thisValue, js2val argv[], uint32 argc)
{
return Date_makeTime(meta, thisValue, argv, argc, 3, false);
}
static js2val Date_setSeconds(JS2Metadata *meta, const js2val thisValue, js2val argv[], uint32 argc)
{
return Date_makeTime(meta, thisValue, argv, argc, 2, true);
}
static js2val Date_setUTCSeconds(JS2Metadata *meta, const js2val thisValue, js2val argv[], uint32 argc)
{
return Date_makeTime(meta, thisValue, argv, argc, 2, true);
}
static js2val Date_setMilliseconds(JS2Metadata *meta, const js2val thisValue, js2val argv[], uint32 argc)
{
return Date_makeTime(meta, thisValue, argv, argc, 1, true);
}
static js2val Date_setUTCMilliseconds(JS2Metadata *meta, const js2val thisValue, js2val argv[], uint32 argc)
{
return Date_makeTime(meta, thisValue, argv, argc, 1, true);
}
// SpiderMonkey has a 'hinted' version:
#if JS_HAS_VALUEOF_HINT
static js2val Date_valueOf(JS2Metadata *meta, const js2val thisValue, js2val argv[], uint32 argc)
{
/* If called directly with no arguments, convert to a time number. */
if (argc == 0)
return Date_getTime(meta, thisValue, argv, argc);
/* Convert to number only if the hint was given, otherwise favor string. */
if (argc == 1) {
const String *str = JSValue::string(JSValue::toString(meta, argv[0]));
if (str->compare(&cx->Number_StringAtom) == 0)
return Date_getTime(meta, thisValue, argv, argc);
}
return Date_toString(meta, thisValue, argv, argc);
}
#endif
void initDateObject(JS2Metadata *meta)
{
FunctionData prototypeFunctions[] =
{
{ "getTime", 0, Date_getTime },
{ "getTimezoneOffset", 0, Date_getTimezoneOffset },
{ "getYear", 0, Date_getYear },
{ "getFullYear", 0, Date_getFullYear },
{ "getUTCFullYear", 0, Date_getUTCFullYear },
{ "getMonth", 0, Date_getMonth },
{ "getUTCMonth", 0, Date_getUTCMonth },
{ "getDate", 0, Date_getDate },
{ "getUTCDate", 0, Date_getUTCDate },
{ "getDay", 0, Date_getDay },
{ "getUTCDay", 0, Date_getUTCDay },
{ "getHours", 0, Date_getHours },
{ "getUTCHours", 0, Date_getUTCHours },
{ "getMinutes", 0, Date_getMinutes },
{ "getUTCMinutes", 0, Date_getUTCMinutes },
{ "getSeconds", 0, Date_getUTCSeconds },
{ "getUTCSeconds", 0, Date_getUTCSeconds },
{ "getMilliseconds", 0, Date_getUTCMilliseconds },
{ "getUTCMilliseconds", 0, Date_getUTCMilliseconds },
{ "setTime", 1, Date_setTime },
{ "setYear", 1, Date_setYear },
{ "setFullYear", 1, Date_setFullYear },
{ "setUTCFullYear", 3, Date_setUTCFullYear },
{ "setMonth", 2, Date_setMonth },
{ "setUTCMonth", 2, Date_setUTCMonth },
{ "setDate", 1, Date_setDate },
{ "setUTCDate", 1, Date_setUTCDate },
{ "setHours", 4, Date_setHours },
{ "setUTCHours", 4, Date_setUTCHours },
{ "setMinutes", 3, Date_setMinutes },
{ "setUTCMinutes", 3, Date_setUTCMinutes },
{ "setSeconds", 2, Date_setSeconds },
{ "setUTCSeconds", 2, Date_setUTCSeconds },
{ "setMilliseconds", 1, Date_setMilliseconds },
{ "setUTCMilliseconds", 1, Date_setUTCMilliseconds },
{ "toUTCString", 0, Date_toGMTString },
{ "toGMTString", 0, Date_toGMTString }, // XXX this is a SpiderMonkey extension?
{ "toLocaleString", 0, Date_toLocaleString },
{ "toLocaleDateString", 0, Date_toLocaleDateString },
{ "toLocaleTimeString", 0, Date_toLocaleTimeString },
{ "toDateString", 0, Date_toDateString },
{ "toTimeString", 0, Date_toTimeString },
{ "toSource", 0, Date_toSource },
{ "toString", 0, Date_toString },
#if JS_HAS_VALUEOF_HINT
{ "valueOf", 0, Date_valueOf },
#else
{ "valueOf", 0, Date_getTime },
#endif
{ NULL }
};
FunctionData staticFunctions[] =
{
{ "parse", 0, Date_parse },
{ "UTC", 0, Date_UTC },
{ NULL }
};
LocalTZA = -(PRMJ_LocalGMTDifference() * msPerSecond);
meta->dateClass->prototype = new DateInstance(meta, meta->objectClass->prototype, meta->dateClass);
meta->initBuiltinClass(meta->dateClass, &prototypeFunctions[0], &staticFunctions[0], Date_Constructor, Date_Call);
}
}
}
Ссылка в новой задаче Показать git blame Копировать постоянную ссылку