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LibJS: Implement Temporal.Instant.prototype.subtract()

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This commit is contained in:
Linus Groh 2021-08-07 00:38:21 +01:00
parent b38f1fb071
commit 6852ba4d34
4 changed files with 87 additions and 0 deletions
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26
Userland/Libraries/LibJS/Runtime/Temporal/InstantPrototype.cpp
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@ -36,6 +36,7 @@ void InstantPrototype::initialize(GlobalObject& global_object)
u8 attr = Attribute::Writable | Attribute::Configurable;
define_native_function(vm.names.add, add, 1, attr);
define_native_function(vm.names.subtract, subtract, 1, attr);
define_native_function(vm.names.round, round, 1, attr);
define_native_function(vm.names.equals, equals, 1, attr);
define_native_function(vm.names.valueOf, value_of, 0, attr);
@ -152,6 +153,31 @@ JS_DEFINE_NATIVE_FUNCTION(InstantPrototype::add)
return create_temporal_instant(global_object, *ns);
}
// 8.3.8 Temporal.Instant.prototype.subtract ( temporalDurationLike ), https://tc39.es/proposal-temporal/#sec-temporal.instant.prototype.subtract
JS_DEFINE_NATIVE_FUNCTION(InstantPrototype::subtract)
{
auto temporal_duration_like = vm.argument(0);
// 1. Let instant be the this value.
// 2. Perform ? RequireInternalSlot(instant, [[InitializedTemporalInstant]]).
auto* instant = typed_this(global_object);
if (vm.exception())
return {};
// 3. Let duration be ? ToLimitedTemporalDuration(temporalDurationLike, « "years", "months", "weeks", "days" »).
auto duration = to_limited_temporal_duration(global_object, temporal_duration_like, { "years"sv, "months"sv, "weeks"sv, "days"sv });
if (vm.exception())
return {};
// 4. Let ns be ? AddInstant(instant.[[Nanoseconds]], −duration.[[Hours]], −duration.[[Minutes]], −duration.[[Seconds]], −duration.[[Milliseconds]], −duration.[[Microseconds]], −duration.[[Nanoseconds]]).
auto* ns = add_instant(global_object, instant->nanoseconds(), -duration->hours, -duration->minutes, -duration->seconds, -duration->milliseconds, -duration->microseconds, -duration->nanoseconds);
if (vm.exception())
return {};
// 5. Return ! CreateTemporalInstant(ns).
return create_temporal_instant(global_object, *ns);
}
// 8.3.11 Temporal.Instant.prototype.round ( options ), https://tc39.es/proposal-temporal/#sec-temporal.instant.prototype.round
JS_DEFINE_NATIVE_FUNCTION(InstantPrototype::round)
{

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

@ -24,6 +24,7 @@ private:
JS_DECLARE_NATIVE_FUNCTION(epoch_microseconds_getter);
JS_DECLARE_NATIVE_FUNCTION(epoch_nanoseconds_getter);
JS_DECLARE_NATIVE_FUNCTION(add);
JS_DECLARE_NATIVE_FUNCTION(subtract);
JS_DECLARE_NATIVE_FUNCTION(round);
JS_DECLARE_NATIVE_FUNCTION(equals);
JS_DECLARE_NATIVE_FUNCTION(value_of);