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LibJS: Implement Date.prototype.setUTCFullYear

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Timothy Flynn 2022-01-15 15:56:17 -05:00 • committed by Andreas Kling
parent 51bc973ecc
commit 0d73da0328
3 changed files with 93 additions and 2 deletions
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39
Userland/Libraries/LibJS/Runtime/DatePrototype.cpp
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@ -72,8 +72,8 @@ void DatePrototype::initialize(GlobalObject& global_object)
define_native_function(vm.names.setMonth, set_month, 2, attr);
define_native_function(vm.names.setSeconds, set_seconds, 2, attr);
define_native_function(vm.names.setTime, set_time, 1, attr);
define_native_function(vm.names.setUTCDate, set_date, 1, attr); // FIXME: This is a hack, Serenity doesn't currently support timezones other than UTC.
define_native_function(vm.names.setUTCFullYear, set_full_year, 3, attr); // FIXME: see above
define_native_function(vm.names.setUTCDate, set_date, 1, attr); // FIXME: This is a hack, Serenity doesn't currently support timezones other than UTC.
define_native_function(vm.names.setUTCFullYear, set_utc_full_year, 3, attr);
define_native_function(vm.names.setUTCHours, set_utc_hours, 4, attr);
define_native_function(vm.names.setUTCMilliseconds, set_utc_milliseconds, 1, attr);
define_native_function(vm.names.setUTCMinutes, set_utc_minutes, 3, attr);
@ -619,6 +619,41 @@ JS_DEFINE_NATIVE_FUNCTION(DatePrototype::set_time)
return time;
}
// 21.4.4.29 Date.prototype.setUTCFullYear ( year [ , month [ , date ] ] ), https://tc39.es/ecma262/#sec-date.prototype.setutcfullyear
JS_DEFINE_NATIVE_FUNCTION(DatePrototype::set_utc_full_year)
{
// 1. Let t be ? thisTimeValue(this value).
auto this_time = TRY(this_time_value(global_object, vm.this_value(global_object)));
// 2. If t is NaN, set t to +0𝔽.
double time = 0;
if (!this_time.is_nan())
time = this_time.as_double();
// 3. Let y be ? ToNumber(year).
auto year = TRY(vm.argument(0).to_number(global_object));
// 4. If month is not present, let m be MonthFromTime(t); otherwise, let m be ? ToNumber(month).
auto month = TRY(argument_or_value(global_object, 1, month_from_time(time)));
// 5. If date is not present, let dt be DateFromTime(t); otherwise, let dt be ? ToNumber(date).
auto date = TRY(argument_or_value(global_object, 2, date_from_time(time)));
// 6. Let newDate be MakeDate(MakeDay(y, m, dt), TimeWithinDay(t)).
auto day = make_day(global_object, year, month, date);
auto new_date = make_date(day, Value(time_within_day(time)));
// 7. Let v be TimeClip(newDate).
new_date = time_clip(global_object, new_date);
// 8. Set the [[DateValue]] internal slot of this Date object to v.
auto* this_object = MUST(typed_this_object(global_object));
this_object->set_date_value(new_date.as_double());
// 9. Return v.
return new_date;
}
// 21.4.4.30 Date.prototype.setUTCHours ( hour [ , min [ , sec [ , ms ] ] ] ), https://tc39.es/ecma262/#sec-date.prototype.setutchours
JS_DEFINE_NATIVE_FUNCTION(DatePrototype::set_utc_hours)
{

1
Userland/Libraries/LibJS/Runtime/DatePrototype.h
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@ -46,6 +46,7 @@ private:
JS_DECLARE_NATIVE_FUNCTION(set_month);
JS_DECLARE_NATIVE_FUNCTION(set_seconds);
JS_DECLARE_NATIVE_FUNCTION(set_time);
JS_DECLARE_NATIVE_FUNCTION(set_utc_full_year);
JS_DECLARE_NATIVE_FUNCTION(set_utc_hours);
JS_DECLARE_NATIVE_FUNCTION(set_utc_milliseconds);
JS_DECLARE_NATIVE_FUNCTION(set_utc_minutes);