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LibJS: Implement Date.prototype.setUTCHours

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Timothy Flynn 2022-01-15 15:51:17 -05:00 • committed by Andreas Kling
parent 6998c0a796
commit 51bc973ecc
3 changed files with 101 additions and 1 deletions
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36
Userland/Libraries/LibJS/Runtime/DatePrototype.cpp
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@ -74,7 +74,7 @@ void DatePrototype::initialize(GlobalObject& global_object)
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.setUTCHours, set_hours, 4, attr); // FIXME: see above
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);
define_native_function(vm.names.setUTCMonth, set_utc_month, 2, attr);
@ -619,6 +619,40 @@ JS_DEFINE_NATIVE_FUNCTION(DatePrototype::set_time)
return time;
}
// 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. Let t be LocalTime(? thisTimeValue(this value)).
auto this_time = TRY(this_time_value(global_object, vm.this_value(global_object)));
auto time = local_time(this_time.as_double());
// 2. Let h be ? ToNumber(hour).
auto hour = TRY(vm.argument(0).to_number(global_object));
// 3. If min is not present, let m be MinFromTime(t); otherwise, let m be ? ToNumber(min).
auto minute = TRY(argument_or_value(global_object, 1, min_from_time(time)));
// 4. If sec is not present, let s be SecFromTime(t); otherwise, let s be ? ToNumber(sec).
auto second = TRY(argument_or_value(global_object, 2, sec_from_time(time)));
// 5. If ms is not present, let milli be msFromTime(t); otherwise, let milli be ? ToNumber(ms).
auto millisecond = TRY(argument_or_value(global_object, 3, ms_from_time(time)));
// 6. Let date be MakeDate(Day(t), MakeTime(h, m, s, milli)).
auto new_time = make_time(global_object, hour, minute, second, millisecond);
auto date = make_date(Value(day(time)), new_time);
// 7. Let v be TimeClip(newDate).
date = time_clip(global_object, 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(date.as_double());
// 9. Return v.
return date;
}
// 21.4.4.31 Date.prototype.setUTCMilliseconds ( ms ), https://tc39.es/ecma262/#sec-date.prototype.setutcmilliseconds
JS_DEFINE_NATIVE_FUNCTION(DatePrototype::set_utc_milliseconds)
{

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_hours);
JS_DECLARE_NATIVE_FUNCTION(set_utc_milliseconds);
JS_DECLARE_NATIVE_FUNCTION(set_utc_minutes);
JS_DECLARE_NATIVE_FUNCTION(set_utc_month);