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LibJS: Implement Temporal.ZonedDateTime.prototype.epochMicroseconds

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Linus Groh 2021-08-04 23:03:56 +01:00 • committed by Andreas Kling
parent a9162b7e98
commit 62294d62c5
3 changed files with 36 additions and 0 deletions
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20
Userland/Libraries/LibJS/Runtime/Temporal/ZonedDateTimePrototype.cpp
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@ -44,6 +44,7 @@ void ZonedDateTimePrototype::initialize(GlobalObject& global_object)
define_native_accessor(vm.names.nanosecond, nanosecond_getter, {}, Attribute::Configurable);
define_native_accessor(vm.names.epochSeconds, epoch_seconds_getter, {}, Attribute::Configurable);
define_native_accessor(vm.names.epochMilliseconds, epoch_milliseconds_getter, {}, Attribute::Configurable);
define_native_accessor(vm.names.epochMicroseconds, epoch_microseconds_getter, {}, Attribute::Configurable);
}
static ZonedDateTime* typed_this(GlobalObject& global_object)
@ -393,4 +394,23 @@ JS_DEFINE_NATIVE_FUNCTION(ZonedDateTimePrototype::epoch_milliseconds_getter)
return Value((double)ms.to_base(10).to_int<i64>().value());
}
// 6.3.17 get Temporal.ZonedDateTime.prototype.epochMicroseconds, https://tc39.es/proposal-temporal/#sec-get-temporal.zoneddatetime.prototype.epochmicroseconds
JS_DEFINE_NATIVE_FUNCTION(ZonedDateTimePrototype::epoch_microseconds_getter)
{
// 1. Let zonedDateTime be the this value.
// 2. Perform ? RequireInternalSlot(zonedDateTime, [[InitializedTemporalZonedDateTime]]).
auto* zoned_date_time = typed_this(global_object);
if (vm.exception())
return {};
// 3. Let ns be zonedDateTime.[[Nanoseconds]].
auto& ns = zoned_date_time->nanoseconds();
// 4. Let µs be RoundTowardsZero(ℝ(ns) / 10^3).
auto us = ns.big_integer().divided_by(Crypto::UnsignedBigInteger { 1'000 }).quotient;
// 5. Return ℤ(µs).
return js_bigint(vm, move(us));
}
}

1
Userland/Libraries/LibJS/Runtime/Temporal/ZonedDateTimePrototype.h
View file

@ -33,6 +33,7 @@ private:
JS_DECLARE_NATIVE_FUNCTION(nanosecond_getter);
JS_DECLARE_NATIVE_FUNCTION(epoch_seconds_getter);
JS_DECLARE_NATIVE_FUNCTION(epoch_milliseconds_getter);
JS_DECLARE_NATIVE_FUNCTION(epoch_microseconds_getter);
};
}