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arkcompiler_ets_runtime/ecmascript/js_date.cpp
wupengyong 2ac7a1eb83 Reason: fix Date cache bug 
Issue: https://gitee.com/openharmony/arkcompiler_ets_runtime/issues/IB1MTB?from=project-issue
Test: Build & Boot devices

Signed-off-by: wupengyong <wupengyong@huawei.com>
Change-Id: I2a4b21bae79ff8d97b624acce4410d48ac954259
2024-11-05 20:38:04 +08:00

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33 KiB
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/*
* Copyright (c) 2021 Huawei Device Co., Ltd.
* Licensed under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "ecmascript/js_date.h"
#include <ctime>
#include <regex>
#include <sys/time.h>
#include "ecmascript/date_parse.h"
#include "ecmascript/object_fast_operator-inl.h"
#include "ecmascript/platform/time.h"
namespace panda::ecmascript {
using NumberHelper = base::NumberHelper;
static const std::array<CString, WEEKDAY> WEEK_DAY_NAME = {"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"};
static const std::array<CString, MOUTH_PER_YEAR> MONTH_NAME = {
"Jan", "Feb", "Mar", "Apr", "May", "Jun",
"Jul", "Aug", "Sep", "Oct", "Nov", "Dec"
};
void DateUtils::TransferTimeToDate(int64_t timeMs, std::array<int64_t, DATE_LENGTH> *date)
{
(*date)[HOUR] = Mod(timeMs, MS_PER_DAY); // ms from hour, minutes, second, ms
(*date)[DAYS] = (timeMs - (*date)[HOUR]) / MS_PER_DAY; // days from year, month, day
(*date)[MS] = (*date)[HOUR] % MS_PER_SECOND; // ms
(*date)[HOUR] = ((*date)[HOUR] - (*date)[MS]) / MS_PER_SECOND; // s from hour, minutes, second
(*date)[SEC] = (*date)[HOUR] % SEC_PER_MINUTE; // second
(*date)[HOUR] = ((*date)[HOUR] - (*date)[SEC]) / SEC_PER_MINUTE; // min from hour, minutes
(*date)[MIN] = (*date)[HOUR] % SEC_PER_MINUTE; // min
(*date)[HOUR] = ((*date)[HOUR] - (*date)[MIN]) / SEC_PER_MINUTE; // hour
(*date)[WEEKDAY] = Mod(((*date)[DAYS] + LEAP_NUMBER[0]), DAY_PER_WEEK); // weekday
GetYearFromDays(date);
}
// static
bool DateUtils::IsLeap(int64_t year)
{
return year % LEAP_NUMBER[0] == 0 && (year % LEAP_NUMBER[1] != 0 || year % LEAP_NUMBER[2] == 0); // 2: means index
}
// static
int64_t DateUtils::GetDaysInYear(int64_t year)
{
int64_t number;
number = IsLeap(year) ? (DAYS_IN_YEAR + 1) : DAYS_IN_YEAR;
return number;
}
// static
int64_t DateUtils::GetDaysFromYear(int64_t year)
{
return DAYS_IN_YEAR * (year - YEAR_NUMBER[0]) + FloorDiv(year - YEAR_NUMBER[1], LEAP_NUMBER[0]) -
FloorDiv(year - YEAR_NUMBER[2], LEAP_NUMBER[1]) + // 2: year index
FloorDiv(year - YEAR_NUMBER[3], LEAP_NUMBER[2]); // 3, 2: year index
}
// static
int64_t DateUtils::FloorDiv(int64_t a, int64_t b)
{
ASSERT(b != 0);
int64_t m = a % b;
int64_t res = m < 0 ? ((a - m - b) / b) : ((a - m) / b);
return res;
}
// static
void DateUtils::GetYearFromDays(std::array<int64_t, DATE_LENGTH> *date)
{
if (date == nullptr) {
return;
}
if (isCached_) {
int64_t t = (*date)[DAYS];
int64_t newDays = preDays_ + (t - preSumDays_);
if (newDays >= 1 && newDays < DAYS_FEBRUARY) {
preSumDays_ = t;
preDays_ = newDays;
(*date)[DAYS] = newDays;
(*date)[MONTH] = preMonth_;
(*date)[YEAR] = preYear_;
return;
}
}
int64_t realDay;
int64_t d = (*date)[DAYS];
preSumDays_ = d;
d += DAYS_1970_TO_0000; // shift from 1970-01-01 to 0000-03-01
int64_t era = (d >= 0 ? d : d - DAYS_IN_400_YEARS + 1) / DAYS_IN_400_YEARS; // an era is a 400 year period
int64_t doe = static_cast<int64_t>(d - era * DAYS_IN_400_YEARS); // days of era
int64_t yoe = (doe - doe / DAYS_IN_4_YEARS + doe / DAYS_IN_100_YEARS -
doe / (DAYS_IN_400_YEARS - 1)) / DAYS_IN_YEAR; // year of era
int64_t y = static_cast<int64_t>(yoe) + era * LEAP_NUMBER[2];
int64_t doy = doe - (DAYS_IN_YEAR * yoe + yoe / LEAP_NUMBER[0] -
yoe / LEAP_NUMBER[1]); // days of year
int64_t mp = (COEFFICIENT_TO_CIVIL[0] * doy + MONTH_COEFFICIENT) /
COEFFICIENT_TO_CIVIL[1]; // [0, 11] / [Mar,Feb] system
int64_t month = mp + (mp < MONTH_TRANSFORM[1] ?
MONTH_TRANSFORM[0] : MONTH_TRANSFORM[2]); // transform month to civil system
int64_t year = y + (month <= MONTH_COEFFICIENT);
month -= 1;
realDay = doy - (COEFFICIENT_TO_CIVIL[1] * mp + 2) / COEFFICIENT_TO_CIVIL[0] + 1; // 2: shift from 03-01 to 01-01
(*date)[YEAR] = year;
(*date)[MONTH] = month;
(*date)[DAYS] = realDay;
preDays_ = realDay;
preMonth_ = month;
preYear_ = year;
isCached_ = true;
}
// static
int64_t DateUtils::Mod(int64_t a, int b)
{
ASSERT(b != 0);
int64_t m = a % b;
int64_t res = m < 0 ? (m + b) : m;
return res;
}
// static
// 20.4.1.11
double JSDate::MakeTime(double hour, double min, double sec, double ms)
{
if (std::isfinite(hour) && std::isfinite(min) && std::isfinite(sec) && std::isfinite(ms)) {
double hourInteger = NumberHelper::TruncateDouble(hour);
double minInteger = NumberHelper::TruncateDouble(min);
double secInteger = NumberHelper::TruncateDouble(sec);
double msInteger = NumberHelper::TruncateDouble(ms);
return hourInteger * MS_PER_HOUR + minInteger * MS_PER_MINUTE + secInteger * MS_PER_SECOND + msInteger;
}
return base::NAN_VALUE;
}
// static
// 20.4.1.12
double JSDate::MakeDay(double year, double month, double date)
{
if (std::isfinite(year) && std::isfinite(month) && std::isfinite(date)) {
double yearInteger = NumberHelper::TruncateDouble(year);
double monthInteger = NumberHelper::TruncateDouble(month);
int64_t y = static_cast<int64_t>(yearInteger) + static_cast<int64_t>(monthInteger / MOUTH_PER_YEAR);
int64_t m = static_cast<int64_t>(monthInteger) % MOUTH_PER_YEAR;
if (m < 0) {
m += MOUTH_PER_YEAR;
y -= 1;
}
int64_t days = DateUtils::GetDaysFromYear(y);
int index = DateUtils::IsLeap(year) ? 1 : 0;
days += DAYS_FROM_MONTH[index][m];
return static_cast<double>(days - 1) + NumberHelper::TruncateDouble(date);
}
return base::NAN_VALUE;
}
// static
// 20.4.1.13
double JSDate::MakeDate(double day, double time)
{
if (std::isfinite(day) && std::isfinite(time)) {
return time + day * MS_PER_DAY;
}
return base::NAN_VALUE;
}
// static
// 20.4.1.14
double JSDate::TimeClip(double time)
{
if (-MAX_TIME_IN_MS <= time && time <= MAX_TIME_IN_MS) {
return NumberHelper::TruncateDouble(time);
}
return base::NAN_VALUE;
}
// 20.4.1.8
double JSDate::LocalTime(double timeMs) const
{
return timeMs + GetLocalOffsetFromOS(timeMs, true);
}
// 20.4.1.9
double JSDate::UTCTime(double timeMs) const
{
return timeMs - GetLocalOffsetFromOS(timeMs, false);
}
// static
int JSDate::GetSignedNumFromString(const CString &str, int len, int *index)
{
int res = 0;
GetNumFromString(str, len, index, &res);
if (str.at(0) == NEG) {
return -res;
}
return res;
}
// static
bool JSDate::GetNumFromString(const CString &str, int len, int *index, int *num)
{
int indexStr = *index;
char oneByte = 0;
while (indexStr < len) {
oneByte = str.at(indexStr);
if (oneByte >= '0' && oneByte <= '9') {
break;
}
indexStr++;
}
if (indexStr >= len) {
return false;
}
int value = 0;
while (indexStr < len) {
oneByte = str.at(indexStr);
int val = static_cast<int>(oneByte - '0');
if (val >= 0 && val <= NUM_NINE) {
value = value * TEN + val;
indexStr++;
} else {
break;
}
}
*num = value;
*index = indexStr;
return true;
}
// 20.4.1.7
int64_t JSDate::GetLocalOffsetInMin(const JSThread *thread, int64_t timeMs, bool isLocal)
{
if (!isLocal) {
return 0;
}
double localOffset = this->GetLocalOffset().GetDouble();
if (localOffset == MAX_DOUBLE) {
localOffset = static_cast<double>(GetLocalOffsetFromOS(timeMs, isLocal));
SetLocalOffset(thread, JSTaggedValue(localOffset));
}
return localOffset;
}
// static
JSTaggedValue JSDate::LocalParseStringToMs(const CString &str)
{
int year = 0;
int month = 0;
int date = 1;
int hours = 0;
int minutes = 0;
int seconds = 0;
int ms = 0;
int index = 0;
int len = static_cast<int>(str.length());
bool isLocal = false;
CString::size_type indexGmt;
CString::size_type indexPlus = CString::npos;
int localTime = 0;
int localHours = 0;
int localMinutes = 0;
int64_t localMs = 0;
CString::size_type localSpace;
localSpace = str.find(' ', index);
CString strMonth = str.substr(localSpace + 1, LENGTH_MONTH_NAME);
for (int i = 0; i < MOUTH_PER_YEAR; i++) {
if (strMonth == MONTH_NAME[i]) {
month = i;
break;
}
}
index += (LENGTH_MONTH_NAME + 1);
GetNumFromString(str, len, &index, &date);
GetNumFromString(str, len, &index, &year);
indexGmt = str.find("GMT", index);
if (indexGmt == CString::npos) {
GetNumFromString(str, len, &index, &hours);
GetNumFromString(str, len, &index, &minutes);
GetNumFromString(str, len, &index, &seconds);
isLocal = true;
localMs -= (GetLocalOffsetFromOS(localMs, true) * MS_PER_MINUTE);
} else {
indexPlus = str.find(PLUS, indexGmt);
int indexLocal = static_cast<int>(indexGmt);
GetNumFromString(str, indexGmt, &index, &hours);
GetNumFromString(str, indexGmt, &index, &minutes);
GetNumFromString(str, indexGmt, &index, &seconds);
GetNumFromString(str, len, &indexLocal, &localTime);
localHours = localTime / HUNDRED;
localMinutes = localTime % HUNDRED;
localMs = static_cast<int64_t>(MakeTime(localHours, localMinutes, 0, 0));
if (indexPlus != CString::npos) {
localMs = -localMs;
}
}
double day = MakeDay(year, month, date);
double time = MakeTime(hours, minutes, seconds, ms);
double timeValue = TimeClip(MakeDate(day, time));
if (std::isnan(timeValue)) {
return JSTaggedValue(timeValue);
}
if (isLocal && timeValue < CHINA_1901_MS && (-localMs / MS_PER_MINUTE) == CHINA_AFTER_1901_MIN) {
timeValue += static_cast<double>(localMs - CHINA_BEFORE_1901_MS);
} else {
timeValue += localMs;
}
return JSTaggedValue(timeValue);
}
// static
JSTaggedValue JSDate::UtcParseStringToMs(const CString &str)
{
int year = 0;
int month = 0;
int date = 1;
int hours = 0;
int minutes = 0;
int seconds = 0;
int ms = 0;
int index = 0;
int len = static_cast<int>(str.length());
CString::size_type indexGmt;
CString::size_type indexPlus = CString::npos;
int localTime = 0;
int localHours = 0;
int localMinutes = 0;
int64_t localMs = 0;
bool isLocal = false;
GetNumFromString(str, len, &index, &date);
CString strMonth = str.substr(index + 1, LENGTH_MONTH_NAME);
for (int i = 0; i < MOUTH_PER_YEAR; i++) {
if (strMonth == MONTH_NAME[i]) {
month = i;
break;
}
}
index += (LENGTH_MONTH_NAME + 1);
GetNumFromString(str, len, &index, &year);
indexGmt = str.find("GMT", index);
if (indexGmt == CString::npos) {
GetNumFromString(str, len, &index, &hours);
GetNumFromString(str, len, &index, &minutes);
GetNumFromString(str, len, &index, &seconds);
isLocal = true;
localMs -= (GetLocalOffsetFromOS(localMs, true) * MS_PER_MINUTE);
} else {
indexPlus = str.find(PLUS, indexGmt);
int indexLocal = static_cast<int>(indexGmt);
GetNumFromString(str, indexGmt, &index, &hours);
GetNumFromString(str, indexGmt, &index, &minutes);
GetNumFromString(str, indexGmt, &index, &seconds);
GetNumFromString(str, len, &indexLocal, &localTime);
localHours = localTime / HUNDRED;
localMinutes = localTime % HUNDRED;
localMs = static_cast<int64_t>(MakeTime(localHours, localMinutes, 0, 0));
if (indexPlus != CString::npos) {
localMs = -localMs;
}
}
double day = MakeDay(year, month, date);
double time = MakeTime(hours, minutes, seconds, ms);
double timeValue = TimeClip(MakeDate(day, time));
if (std::isnan(timeValue)) {
return JSTaggedValue(timeValue);
}
if (isLocal && timeValue < CHINA_1901_MS && (-localMs / MS_PER_MINUTE) == CHINA_AFTER_1901_MIN) {
timeValue += static_cast<double>(localMs - CHINA_BEFORE_1901_MS);
} else {
timeValue += localMs;
}
return JSTaggedValue(timeValue);
}
// static
JSTaggedValue JSDate::IsoParseStringToMs(const CString &str)
{
char flag = 0;
int year;
int month = 1;
int date = 1;
int hours = 0;
int minutes = 0;
int seconds = 0;
int ms = 0;
int index = 0;
int len = static_cast<int>(str.length());
year = GetSignedNumFromString(str, len, &index);
CString::size_type indexT = str.find(FLAG_TIME, index);
CString::size_type indexZ = str.find(FLAG_UTC, index);
CString::size_type indexEndFlag = 0;
int64_t localMs = 0;
if (indexZ != CString::npos) {
indexEndFlag = indexZ;
} else if (len >= MIN_LENGTH && str.at(len - INDEX_PLUS_NEG) == NEG) {
indexEndFlag = static_cast<CString::size_type>(len - INDEX_PLUS_NEG);
flag = NEG;
} else if (len >= MIN_LENGTH && str.at(len - INDEX_PLUS_NEG) == PLUS) {
indexEndFlag = static_cast<CString::size_type>(len - INDEX_PLUS_NEG);
flag = PLUS;
}
if (indexT != CString::npos) {
if (static_cast<int>(indexT) - index == LENGTH_PER_TIME) {
GetNumFromString(str, len, &index, &month);
} else if (static_cast<int>(indexT) - index == (LENGTH_PER_TIME + LENGTH_PER_TIME)) {
GetNumFromString(str, len, &index, &month);
GetNumFromString(str, len, &index, &date);
}
GetNumFromString(str, len, &index, &hours);
GetNumFromString(str, len, &index, &minutes);
if (indexEndFlag > 0) {
if (static_cast<int>(indexEndFlag) - index == LENGTH_PER_TIME) {
GetNumFromString(str, len, &index, &seconds);
} else if (static_cast<int>(indexEndFlag) - index == (LENGTH_PER_TIME + LENGTH_PER_TIME + 1)) {
GetNumFromString(str, len, &index, &seconds);
GetNumFromString(str, len, &index, &ms);
}
} else {
if (len - index == LENGTH_PER_TIME) {
GetNumFromString(str, len, &index, &seconds);
} else if (len - index == (LENGTH_PER_TIME + LENGTH_PER_TIME + 1)) {
GetNumFromString(str, len, &index, &seconds);
GetNumFromString(str, len, &index, &ms);
}
}
} else {
GetNumFromString(str, len, &index, &month);
GetNumFromString(str, len, &index, &date);
}
if (indexEndFlag > 0) {
int localHours = 0;
int localMinutes = 0;
if (indexZ == CString::npos) {
GetNumFromString(str, len, &index, &localHours);
GetNumFromString(str, len, &index, &localMinutes);
if (flag == PLUS) {
localMs = static_cast<int64_t>(-MakeTime(localHours, localMinutes, 0, 0));
} else {
localMs = static_cast<int64_t>(MakeTime(localHours, localMinutes, 0, 0));
}
}
}
if (indexEndFlag == 0 && indexT != CString::npos) {
localMs -= (GetLocalOffsetFromOS(localMs, true) * MS_PER_MINUTE);
}
double day = MakeDay(year, month - 1, date);
double time = MakeTime(hours, minutes, seconds, ms);
double timeValue = TimeClip(MakeDate(day, time));
if (std::isnan(timeValue)) {
return JSTaggedValue(timeValue);
}
if (flag == 0 && timeValue < CHINA_1901_MS && (-localMs / MS_PER_MINUTE) == CHINA_AFTER_1901_MIN) {
timeValue += static_cast<double>(localMs - CHINA_BEFORE_1901_MS);
} else {
timeValue += localMs;
}
return JSTaggedValue(timeValue);
}
JSTaggedValue JSDate::GetTimeFromString(const char *str, int len)
{
int time[TIMEZONE + 1];
bool res = DateParse::ParseDateString(str, len, time);
if (res) {
double day = MakeDay(time[YEAR], time[MONTH], time[DAYS]);
double dateTime = MakeTime(time[HOUR], time[MIN], time[SEC], time[MS]);
double timeValue = TimeClip(MakeDate(day, dateTime));
if (std::isnan(timeValue)) {
return JSTaggedValue(timeValue);
}
int64_t localMs;
if (time[TIMEZONE] == INT_MAX) {
localMs = GetLocalOffsetFromOS(static_cast<int64_t>(timeValue), true) * MS_PER_MINUTE;
} else {
localMs = time[TIMEZONE] * MS_PER_SECOND;
}
timeValue -= localMs;
return JSTaggedValue(timeValue);
}
return JSTaggedValue(base::NAN_VALUE);
}
// 20.4.3.2 static
JSTaggedValue JSDate::Parse(EcmaRuntimeCallInfo *argv)
{
ASSERT(argv);
JSThread *thread = argv->GetThread();
JSHandle<JSTaggedValue> msg = base::BuiltinsBase::GetCallArg(argv, 0);
JSHandle<EcmaString> ecmaStr = JSTaggedValue::ToString(thread, msg);
RETURN_VALUE_IF_ABRUPT_COMPLETION(thread, JSTaggedValue::Exception());
CVector<uint8_t> tmpBuf;
EcmaStringAccessor strAccessor(const_cast<EcmaString *>(*ecmaStr));
if (strAccessor.IsUtf16()) {
return JSTaggedValue(base::NAN_VALUE);
}
int len = static_cast<int>(strAccessor.GetLength());
auto data = reinterpret_cast<const char *>(strAccessor.GetUtf8DataFlat(*ecmaStr, tmpBuf));
return GetTimeFromString(data, len);
}
// 20.4.3.1
JSTaggedValue JSDate::Now()
{
// time from now is in ms.
int64_t ans;
struct timeval tv {
};
gettimeofday(&tv, nullptr);
ans = static_cast<int64_t>(tv.tv_sec) * MS_PER_SECOND + (tv.tv_usec / MS_PER_SECOND);
return JSTaggedValue(static_cast<double>(ans));
}
// 20.4.4.2 static
JSTaggedValue JSDate::UTC(EcmaRuntimeCallInfo *argv)
{
double year = 0.0;
double month = 0.0;
double date = 1.0;
double hours = 0.0;
double minutes = 0.0;
double seconds = 0.0;
double ms = 0.0;
JSThread *thread = argv->GetThread();
JSHandle<JSTaggedValue> yearArg = base::BuiltinsBase::GetCallArg(argv, 0);
JSTaggedNumber yearValue = JSTaggedValue::ToNumber(thread, yearArg);
RETURN_VALUE_IF_ABRUPT_COMPLETION(thread, JSTaggedValue::Exception());
if (yearValue.IsNumber()) {
year = yearValue.GetNumber();
if (std::isfinite(year) && !yearValue.IsInt()) {
year = NumberHelper::TruncateDouble(year);
}
if (year >= 0 && year <= (HUNDRED - 1)) {
year = year + NINETEEN_HUNDRED_YEAR;
}
} else {
year = base::NAN_VALUE;
}
uint32_t index = 1;
uint32_t numArgs = argv->GetArgsNumber();
JSTaggedValue res;
if (numArgs > index) {
JSHandle<JSTaggedValue> value = base::BuiltinsBase::GetCallArg(argv, index);
res = JSTaggedValue::ToNumber(thread, value);
RETURN_VALUE_IF_ABRUPT_COMPLETION(thread, JSTaggedValue::Exception());
month = res.GetNumber();
index++;
}
if (numArgs > index) {
JSHandle<JSTaggedValue> value = base::BuiltinsBase::GetCallArg(argv, index);
res = JSTaggedValue::ToNumber(thread, value);
RETURN_VALUE_IF_ABRUPT_COMPLETION(thread, JSTaggedValue::Exception());
date = res.GetNumber();
index++;
}
if (numArgs > index) {
JSHandle<JSTaggedValue> value = base::BuiltinsBase::GetCallArg(argv, index);
res = JSTaggedValue::ToNumber(thread, value);
RETURN_VALUE_IF_ABRUPT_COMPLETION(thread, JSTaggedValue::Exception());
hours = res.GetNumber();
index++;
}
if (numArgs > index) {
JSHandle<JSTaggedValue> value = base::BuiltinsBase::GetCallArg(argv, index);
res = JSTaggedValue::ToNumber(thread, value);
RETURN_VALUE_IF_ABRUPT_COMPLETION(thread, JSTaggedValue::Exception());
minutes = res.GetNumber();
index++;
}
if (numArgs > index) {
JSHandle<JSTaggedValue> value = base::BuiltinsBase::GetCallArg(argv, index);
res = JSTaggedValue::ToNumber(thread, value);
RETURN_VALUE_IF_ABRUPT_COMPLETION(thread, JSTaggedValue::Exception());
seconds = res.GetNumber();
index++;
}
if (numArgs > index) {
JSHandle<JSTaggedValue> value = base::BuiltinsBase::GetCallArg(argv, index);
res = JSTaggedValue::ToNumber(thread, value);
RETURN_VALUE_IF_ABRUPT_COMPLETION(thread, JSTaggedValue::Exception());
ms = res.GetNumber();
}
double day = MakeDay(year, month, date);
double time = MakeTime(hours, minutes, seconds, ms);
return JSTaggedValue(TimeClip(MakeDate(day, time)));
}
// 20.4.4.10
JSTaggedValue JSDate::GetTime() const
{
return GetTimeValue();
}
// static
CString JSDate::StrToTargetLength(const CString &str, int length)
{
int len = 0;
CString sub;
if (str[0] == NEG) {
sub.reserve(length + 1);
ASSERT(str.length() > 0);
len = static_cast<int>(str.length() - 1);
sub += NEG;
} else {
sub.reserve(length);
len = static_cast<int>(str.length());
}
int dif = length - len;
for (int i = 0; i < dif; i++) {
sub += '0';
}
if (str[0] == NEG) {
sub += str.substr(1, len);
} else {
sub += str;
}
return sub;
}
// static
void JSDate::AppendStrToTargetLength(const CString &str, int length, CString &target)
{
int len = 0;
if (str[0] == NEG) {
len = static_cast<int>(str.length() - 1);
target += NEG;
} else {
len = static_cast<int>(str.length());
}
int dif = length - len;
for (int i = 0; i < dif; i++) {
target += '0';
}
if (str[0] == NEG) {
target += str.substr(1, len);
} else {
target += str;
}
}
bool JSDate::GetThisDateValues(JSThread *thread, std::array<int64_t, DATE_LENGTH> *date, bool isLocal) const
{
double timeMs = this->GetTimeValue().GetDouble();
if (std::isnan(timeMs)) {
return false;
}
GetDateValues(thread, timeMs, date, isLocal);
return true;
}
// 20.4.4.35
JSTaggedValue JSDate::ToDateString(JSThread *thread) const
{
std::array<int64_t, DATE_LENGTH> fields = {0};
if (!GetThisDateValues(thread, &fields, true)) {
return JSTaggedValue(base::NAN_VALUE);
}
CString str;
str.reserve(DATE_STRING_LENGTH);
str.append(WEEK_DAY_NAME[fields[WEEKDAY]]) // Append weekdy name
.append(SPACE_STR) // Append SPACE
.append(MONTH_NAME[fields[MONTH]]) // Append mouth name
.append(SPACE_STR); // Append SPACE
ConvertAndAppend(fields[DAYS], STR_LENGTH_OTHERS, str);
str += SPACE;
ConvertAndAppend(fields[YEAR], STR_LENGTH_YEAR, str);
JSHandle<EcmaString> result = thread->GetEcmaVM()->GetFactory()->NewFromASCII(str);
return result.GetTaggedValue();
}
// static
CString JSDate::ToDateString(JSThread *thread, double timeMs)
{
if (std::isnan(timeMs)) {
return "Invalid Date";
}
std::array<int64_t, DATE_LENGTH> fields = {0};
GetDateValues(thread, timeMs, &fields, true);
CString localTime;
int localMin = 0;
localMin = GetLocalOffsetFromOS(timeMs, true);
if (localMin >= 0) {
localTime += PLUS;
} else {
localTime += NEG;
localMin = -localMin;
}
localTime = localTime + StrToTargetLength(ToCString(localMin / MINUTE_PER_HOUR), STR_LENGTH_OTHERS);
localTime = localTime + StrToTargetLength(ToCString(localMin % MINUTE_PER_HOUR), STR_LENGTH_OTHERS);
CString str;
str.reserve(DATE_CSTRING_LENGTH);
str.append(WEEK_DAY_NAME[fields[WEEKDAY]]) // Append weekday name
.append(SPACE_STR) // Append SPACE
.append(MONTH_NAME[fields[MONTH]]) // Append mouth name
.append(SPACE_STR); // Append SPACE
ConvertAndAppend(fields[DAYS], STR_LENGTH_OTHERS, str);
str += SPACE;
ConvertAndAppend(fields[YEAR], STR_LENGTH_YEAR, str);
str += SPACE;
ConvertAndAppend(fields[HOUR], STR_LENGTH_OTHERS, str);
str += COLON;
ConvertAndAppend(fields[MIN], STR_LENGTH_OTHERS, str);
str += COLON;
ConvertAndAppend(fields[SEC], STR_LENGTH_OTHERS, str);
str.append(SPACE_STR) // Append SPACE
.append("GMT") // Append GMT
.append(localTime); // Append localTime
return str;
}
// 20.4.4.36
JSTaggedValue JSDate::ToISOString(JSThread *thread) const
{
std::array<int64_t, DATE_LENGTH> fields = {0};
if (!GetThisDateValues(thread, &fields, false)) {
return JSTaggedValue(base::NAN_VALUE);
}
CString year = ToCString(fields[YEAR]);
if (year[0] == NEG) {
year = StrToTargetLength(year, STR_LENGTH_YEAR + STR_LENGTH_OTHERS);
} else if (year.length() > STR_LENGTH_YEAR) {
year = PLUS + StrToTargetLength(year, STR_LENGTH_YEAR + STR_LENGTH_OTHERS);
} else {
year = StrToTargetLength(year, STR_LENGTH_YEAR);
}
CString str;
str.reserve(ISO_STRING_LENGTH);
str.append(year) // Append year
.append(NEG_STR); // Append NEG
ConvertAndAppend(fields[MONTH] + 1, STR_LENGTH_OTHERS, str);
str += NEG;
ConvertAndAppend(fields[DAYS], STR_LENGTH_OTHERS, str);
str += FLAG_TIME;
ConvertAndAppend(fields[HOUR], STR_LENGTH_OTHERS, str);
str += COLON;
ConvertAndAppend(fields[MIN], STR_LENGTH_OTHERS, str);
str += COLON;
ConvertAndAppend(fields[SEC], STR_LENGTH_OTHERS, str);
str += POINT;
ConvertAndAppend(fields[MS], STR_LENGTH_OTHERS + 1, str);
str += FLAG_UTC;
return thread->GetEcmaVM()->GetFactory()->NewFromASCII(str).GetTaggedValue();
}
// 20.4.4.41
JSTaggedValue JSDate::ToString(JSThread *thread) const
{
int localMin = 0;
std::array<int64_t, DATE_LENGTH> fields = {0};
if (!GetThisDateValues(thread, &fields, true)) {
return JSTaggedValue(base::NAN_VALUE);
}
CString localTime;
localMin = GetLocalOffsetFromOS(static_cast<int64_t>(this->GetTimeValue().GetDouble()), true);
if (localMin >= 0) {
localTime += PLUS;
} else {
localTime += NEG;
localMin = -localMin;
}
localTime = localTime + StrToTargetLength(ToCString(localMin / MINUTE_PER_HOUR), STR_LENGTH_OTHERS);
localTime = localTime + StrToTargetLength(ToCString(localMin % MINUTE_PER_HOUR), STR_LENGTH_OTHERS);
CString str;
str.reserve(TO_STRING_LENGTH);
str.append(WEEK_DAY_NAME[fields[WEEKDAY]]) // Append weekday name
.append(SPACE_STR) // Append SPACE
.append(MONTH_NAME[fields[MONTH]]) // Append mouth name
.append(SPACE_STR); // Append SPACE
ConvertAndAppend(fields[DAYS], STR_LENGTH_OTHERS, str);
str += SPACE;
ConvertAndAppend(fields[YEAR], STR_LENGTH_YEAR, str);
str += SPACE;
ConvertAndAppend(fields[HOUR], STR_LENGTH_OTHERS, str);
str += COLON;
ConvertAndAppend(fields[MIN], STR_LENGTH_OTHERS, str);
str += COLON;
ConvertAndAppend(fields[SEC], STR_LENGTH_OTHERS, str);
str.append(SPACE_STR) // Append SPACE
.append("GMT") // Append GMT
.append(localTime); // Append localTime
return thread->GetEcmaVM()->GetFactory()->NewFromASCII(str).GetTaggedValue();
}
// 20.4.4.42
JSTaggedValue JSDate::ToTimeString(JSThread *thread) const
{
int localMin = 0;
std::array<int64_t, DATE_LENGTH> fields = {0};
if (!GetThisDateValues(thread, &fields, true)) {
return JSTaggedValue(base::NAN_VALUE);
}
CString localTime;
localMin = GetLocalOffsetFromOS(static_cast<int64_t>(this->GetTimeValue().GetDouble()), true);
if (localMin >= 0) {
localTime += PLUS;
} else {
localTime += NEG;
localMin = -localMin;
}
localTime = localTime + StrToTargetLength(ToCString(localMin / MINUTE_PER_HOUR), STR_LENGTH_OTHERS);
localTime = localTime + StrToTargetLength(ToCString(localMin % MINUTE_PER_HOUR), STR_LENGTH_OTHERS);
CString str;
str.reserve(TIME_STRING_LENGTH);
ConvertAndAppend(fields[HOUR], STR_LENGTH_OTHERS, str);
str += COLON;
ConvertAndAppend(fields[MIN], STR_LENGTH_OTHERS, str);
str += COLON;
ConvertAndAppend(fields[SEC], STR_LENGTH_OTHERS, str);
str.append(SPACE_STR) // Append SPACE
.append("GMT") // Append GMT
.append(localTime); // Append localTime
return thread->GetEcmaVM()->GetFactory()->NewFromASCII(str).GetTaggedValue();
}
// 20.4.4.43
JSTaggedValue JSDate::ToUTCString(JSThread *thread) const
{
std::array<int64_t, DATE_LENGTH> fields = {0};
if (!GetThisDateValues(thread, &fields, false)) {
return JSTaggedValue(base::NAN_VALUE);
}
CString str;
str.reserve(UTC_STRING_LENGTH);
str.append(WEEK_DAY_NAME[fields[WEEKDAY]]) // Append weekday name
.append(COMMA_STR) // Append COMMA
.append(SPACE_STR); // Append SPACE
ConvertAndAppend(fields[DAYS], STR_LENGTH_OTHERS, str);
str.append(SPACE_STR) // Append SPACE
.append(MONTH_NAME[fields[MONTH]]) // Append mouth name
.append(SPACE_STR); // Append SPACE
ConvertAndAppend(fields[YEAR], STR_LENGTH_YEAR, str);
str += SPACE;
ConvertAndAppend(fields[HOUR], STR_LENGTH_OTHERS, str);
str += COLON;
ConvertAndAppend(fields[MIN], STR_LENGTH_OTHERS, str);
str += COLON;
ConvertAndAppend(fields[SEC], STR_LENGTH_OTHERS, str);
str.append(SPACE_STR) // Append SPACE
.append("GMT"); // Append GMT
return thread->GetEcmaVM()->GetFactory()->NewFromASCII(str).GetTaggedValue();
}
// 20.4.4.44
JSTaggedValue JSDate::ValueOf() const
{
return this->GetTimeValue();
}
// static
void JSDate::GetDateValues(JSThread *thread, double timeMs, std::array<int64_t, DATE_LENGTH> *date, bool isLocal)
{
int64_t tz = 0;
int64_t timeMsInt = static_cast<int64_t>(timeMs);
if (isLocal) { // timezone offset
tz = GetLocalOffsetFromOS(timeMsInt, isLocal);
timeMsInt += tz * MS_PER_SECOND * SEC_PER_MINUTE;
}
thread->GetDateUtils()->TransferTimeToDate(timeMsInt, date);
(*date)[TIMEZONE] = -tz;
}
double JSDate::GetDateValue(JSThread *thread, double timeMs, uint8_t code, bool isLocal) const
{
if (std::isnan(timeMs)) {
return base::NAN_VALUE;
}
std::array<int64_t, DATE_LENGTH> date = {0};
GetDateValues(thread, timeMs, &date, isLocal);
return static_cast<double>(date[code]);
}
JSTaggedValue JSDate::SetDateValue(EcmaRuntimeCallInfo *argv, uint32_t code, bool isLocal) const
{
// get values from argv.
uint32_t argc = argv->GetArgsNumber();
if (argc == 0) {
return JSTaggedValue(base::NAN_VALUE);
}
uint32_t firstValue = code & CODE_FLAG;
uint32_t endValue = (code >> CODE_4_BIT) & CODE_FLAG;
uint32_t count = endValue - firstValue;
if (argc < count) {
count = argc;
}
// get date values.
double timeMs = this->GetTimeValue().GetDouble();
std::array<int64_t, DATE_LENGTH> date = {0};
bool isSelectLocal = isLocal;
// setUTCFullYear, setFullYear
if (std::isnan(timeMs) && (firstValue == 0)) {
timeMs = 0.0;
isSelectLocal = false;
}
JSThread *thread = argv->GetThread();
if (!std::isnan(timeMs)) {
GetDateValues(thread, timeMs, &date, isSelectLocal);
}
// When timeMs is NaN, the corresponding parameters still need to be obtained
for (uint32_t i = 0; i < count; i++) {
JSHandle<JSTaggedValue> value = base::BuiltinsBase::GetCallArg(argv, i);
JSTaggedNumber res = JSTaggedValue::ToNumber(thread, value);
RETURN_EXCEPTION_IF_ABRUPT_COMPLETION(thread);
double temp = res.GetNumber();
if (std::isnan(temp)) {
return JSTaggedValue(base::NAN_VALUE);
}
date[firstValue + i] = NumberHelper::TruncateDouble(temp);
}
if (std::isnan(timeMs)) {
return JSTaggedValue(base::NAN_VALUE);
}
// set date values.
return JSTaggedValue(SetDateValues(&date, isLocal));
}
// static
double JSDate::SetDateValues(const std::array<int64_t, DATE_LENGTH> *date, bool isLocal)
{
int64_t month = DateUtils::Mod((*date)[MONTH], MONTH_PER_YEAR);
int64_t year = (*date)[YEAR] + ((*date)[MONTH] - month) / MONTH_PER_YEAR;
int64_t days = DateUtils::GetDaysFromYear(year);
int index = DateUtils::IsLeap(year) ? 1 : 0;
days += DAYS_FROM_MONTH[index][month];
days += (*date)[DAYS] - 1;
int64_t millisecond =
(((*date)[HOUR] * MIN_PER_HOUR + (*date)[MIN]) * SEC_PER_MINUTE + (*date)[SEC]) * MS_PER_SECOND + (*date)[MS];
int64_t result = days * MS_PER_DAY + millisecond;
if (isLocal) {
int64_t offset = GetLocalOffsetFromOS(result, isLocal) * SEC_PER_MINUTE * MS_PER_SECOND;
result -= offset;
}
return TimeClip(result);
}
double JSDate::SetDateValues(int64_t year, int64_t month, int64_t day)
{
if (year >= 0 && year < HUNDRED) {
year += NINETEEN_HUNDRED_YEAR;
}
int64_t m = DateUtils::Mod(month, MONTH_PER_YEAR);
int64_t y = year + (month - m) / MONTH_PER_YEAR;
int64_t d = DateUtils::GetDaysFromYear(y);
int index = DateUtils::IsLeap(y) ? 1 : 0;
d += DAYS_FROM_MONTH[index][m] + day - 1;
int64_t result = d * MS_PER_DAY;
int64_t offset = GetLocalOffsetFromOS(result, true) * SEC_PER_MINUTE * MS_PER_SECOND;
result -= offset;
return TimeClip(result);
}
} // namespace panda::ecmascript
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