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/*
* Copyright (c) 2021, Linus Groh <linusg@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <LibCrypto/BigInt/SignedBigInteger.h>
#include <LibJS/Runtime/GlobalObject.h>
#include <LibJS/Runtime/Temporal/Calendar.h>
#include <LibJS/Runtime/Temporal/Instant.h>
#include <LibJS/Runtime/Temporal/Now.h>
#include <LibJS/Runtime/Temporal/PlainDate.h>
#include <LibJS/Runtime/Temporal/PlainDateTime.h>
#include <LibJS/Runtime/Temporal/PlainTime.h>
#include <LibJS/Runtime/Temporal/TimeZone.h>
#include <time.h>
namespace JS::Temporal {
// 2 The Temporal.Now Object, https://tc39.es/proposal-temporal/#sec-temporal-now-object
Now::Now(GlobalObject& global_object)
: Object(*global_object.object_prototype())
{
}
void Now::initialize(GlobalObject& global_object)
{
Object::initialize(global_object);
auto& vm = this->vm();
// 2.1.1 Temporal.Now [ @@toStringTag ], https://tc39.es/proposal-temporal/#sec-temporal-now-@@tostringtag
define_direct_property(*vm.well_known_symbol_to_string_tag(), js_string(vm.heap(), "Temporal.Now"), Attribute::Configurable);
u8 attr = Attribute::Writable | Attribute::Configurable;
define_native_function(vm.names.timeZone, time_zone, 0, attr);
define_native_function(vm.names.instant, instant, 0, attr);
define_native_function(vm.names.plainDateTime, plain_date_time, 1, attr);
define_native_function(vm.names.plainDateTimeISO, plain_date_time_iso, 0, attr);
define_native_function(vm.names.plainDate, plain_date, 1, attr);
define_native_function(vm.names.plainDateISO, plain_date_iso, 0, attr);
define_native_function(vm.names.plainTimeISO, plain_time_iso, 0, attr);
}
// 2.2.1 Temporal.Now.timeZone ( ), https://tc39.es/proposal-temporal/#sec-temporal.now.timezone
JS_DEFINE_NATIVE_FUNCTION(Now::time_zone)
{
// 1. Return ! SystemTimeZone().
return system_time_zone(global_object);
}
// 2.2.2 Temporal.Now.instant ( ), https://tc39.es/proposal-temporal/#sec-temporal.now.instant
JS_DEFINE_NATIVE_FUNCTION(Now::instant)
{
// 1. Return ! SystemInstant().
return system_instant(global_object);
}
// 2.2.3 Temporal.Now.plainDateTime ( calendar [ , temporalTimeZoneLike ] ), https://tc39.es/proposal-temporal/#sec-temporal.now.plaindatetime
JS_DEFINE_NATIVE_FUNCTION(Now::plain_date_time)
{
auto calendar = vm.argument(0);
auto temporal_time_zone_like = vm.argument(1);
// 1. Return ? SystemDateTime(temporalTimeZoneLike, calendar).
return system_date_time(global_object, temporal_time_zone_like, calendar);
}
// 2.2.4 Temporal.Now.plainDateTimeISO ( [ temporalTimeZoneLike ] ), https://tc39.es/proposal-temporal/#sec-temporal.now.plaindatetimeiso
JS_DEFINE_NATIVE_FUNCTION(Now::plain_date_time_iso)
{
auto temporal_time_zone_like = vm.argument(0);
// 1, Let calendar be ! GetISO8601Calendar().
auto* calendar = get_iso8601_calendar(global_object);
// 2. Return ? SystemDateTime(temporalTimeZoneLike, calendar).
return system_date_time(global_object, temporal_time_zone_like, calendar);
}
// 2.2.7 Temporal.Now.plainDate ( calendar [ , temporalTimeZoneLike ] ), https://tc39.es/proposal-temporal/#sec-temporal.now.plaindate
JS_DEFINE_NATIVE_FUNCTION(Now::plain_date)
{
auto calendar = vm.argument(0);
auto temporal_time_zone_like = vm.argument(1);
// 1. Let dateTime be ? SystemDateTime(temporalTimeZoneLike, calendar).
auto* date_time = system_date_time(global_object, temporal_time_zone_like, calendar);
if (vm.exception())
return {};
// 2. Return ! CreateTemporalDate(dateTime.[[ISOYear]], dateTime.[[ISOMonth]], dateTime.[[ISODay]], dateTime.[[Calendar]]).
return create_temporal_date(global_object, date_time->iso_year(), date_time->iso_month(), date_time->iso_day(), date_time->calendar());
}
// 2.2.8 Temporal.Now.plainDateISO ( [ temporalTimeZoneLike ] ), https://tc39.es/proposal-temporal/#sec-temporal.now.plaindateiso
JS_DEFINE_NATIVE_FUNCTION(Now::plain_date_iso)
{
auto temporal_time_zone_like = vm.argument(0);
// 1. Let calendar be ! GetISO8601Calendar().
auto* calendar = get_iso8601_calendar(global_object);
// 2. Let dateTime be ? SystemDateTime(temporalTimeZoneLike, calendar).
auto* date_time = system_date_time(global_object, temporal_time_zone_like, calendar);
if (vm.exception())
return {};
// 3. Return ! CreateTemporalDate(dateTime.[[ISOYear]], dateTime.[[ISOMonth]], dateTime.[[ISODay]], dateTime.[[Calendar]]).
return create_temporal_date(global_object, date_time->iso_year(), date_time->iso_month(), date_time->iso_day(), date_time->calendar());
}
// 2.2.9 Temporal.Now.plainTimeISO ( [ temporalTimeZoneLike ] ), https://tc39.es/proposal-temporal/#sec-temporal.now.plaintimeiso
JS_DEFINE_NATIVE_FUNCTION(Now::plain_time_iso)
{
auto temporal_time_zone_like = vm.argument(0);
// 1. Let calendar be ! GetISO8601Calendar().
auto* calendar = get_iso8601_calendar(global_object);
// 2. Let dateTime be ? SystemDateTime(temporalTimeZoneLike, calendar).
auto* date_time = system_date_time(global_object, temporal_time_zone_like, calendar);
if (vm.exception())
return {};
// 3. Return ! CreateTemporalTime(dateTime.[[ISOHour]], dateTime.[[ISOMinute]], dateTime.[[ISOSecond]], dateTime.[[ISOMillisecond]], dateTime.[[ISOMicrosecond]], dateTime.[[ISONanosecond]]).
return create_temporal_time(global_object, date_time->iso_hour(), date_time->iso_minute(), date_time->iso_second(), date_time->iso_millisecond(), date_time->iso_microsecond(), date_time->iso_nanosecond());
}
// 2.3.1 SystemTimeZone ( ), https://tc39.es/proposal-temporal/#sec-temporal-systemtimezone
TimeZone* system_time_zone(GlobalObject& global_object)
{
// 1. Let identifier be ! DefaultTimeZone().
auto identifier = default_time_zone();
// 2. Return ! CreateTemporalTimeZone(identifier).
return create_temporal_time_zone(global_object, identifier);
}
// 2.3.2 SystemUTCEpochNanoseconds ( ), https://tc39.es/proposal-temporal/#sec-temporal-systemutcepochnanoseconds
BigInt* system_utc_epoch_nanoseconds(GlobalObject& global_object)
{
// 1. Let ns be the approximate current UTC date and time, in nanoseconds since the epoch.
struct timespec now;
clock_gettime(CLOCK_REALTIME, &now);
Checked<i64> ns_timestamp;
ns_timestamp += now.tv_sec;
ns_timestamp *= 1'000'000'000;
ns_timestamp += now.tv_nsec;
if (ns_timestamp.has_overflow()) {
// TODO: Deal with this before 2262-04-21T00:47:16Z.
VERIFY_NOT_REACHED();
}
auto ns = Crypto::SignedBigInteger::create_from(ns_timestamp.value());
// 2. Set ns to the result of clamping ns between −8.64 × 10^21 and 8.64 × 10^21.
// Uhh, these don't even fit in an i64... ¯\_(ツ)_/¯
// 3. Return ℤ(ns).
return js_bigint(global_object.heap(), move(ns));
}
// 2.3.3 SystemInstant ( ), https://tc39.es/proposal-temporal/#sec-temporal-systeminstant
Instant* system_instant(GlobalObject& global_object)
{
// 1. Let ns be ! SystemUTCEpochNanoseconds().
auto* ns = system_utc_epoch_nanoseconds(global_object);
// 2. Return ! CreateTemporalInstant(ns).
return create_temporal_instant(global_object, *ns);
}
// 2.3.4 SystemDateTime ( temporalTimeZoneLike, calendarLike ), https://tc39.es/proposal-temporal/#sec-temporal-systemdatetime
PlainDateTime* system_date_time(GlobalObject& global_object, Value temporal_time_zone_like, Value calendar_like)
{
auto& vm = global_object.vm();
Object* time_zone;
// 1. If temporalTimeZoneLike is undefined, then
if (temporal_time_zone_like.is_undefined()) {
// a. Let timeZone be ! SystemTimeZone().
time_zone = system_time_zone(global_object);
} else {
// a. Let timeZone be ? ToTemporalTimeZone(temporalTimeZoneLike).
time_zone = to_temporal_time_zone(global_object, temporal_time_zone_like);
if (vm.exception())
return {};
}
// 3. Let calendar be ? ToTemporalCalendar(calendarLike).
auto* calendar = to_temporal_calendar(global_object, calendar_like);
if (vm.exception())
return {};
// 4. Let instant be ! SystemInstant().
auto* instant = system_instant(global_object);
// 5. Return ? BuiltinTimeZoneGetPlainDateTimeFor(timeZone, instant, calendar).
return builtin_time_zone_get_plain_date_time_for(global_object, *time_zone, *instant, *calendar);
}
}
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