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LibJS: Implement Temporal.PlainTime.prototype.add/subtract

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Timothy Flynn 2024-11-23 13:31:32 -05:00 • committed by Tim Flynn
commit 1c22011ed6
Notes: github-actions[bot] 2024-11-24 00:37:49 +00:00
6 changed files with 105 additions and 0 deletions
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20
Libraries/LibJS/Runtime/Temporal/PlainTime.cpp
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@ -606,4 +606,24 @@ Time round_time(Time const& time, u64 increment, Unit unit, RoundingMode roundin
VERIFY_NOT_REACHED();
}
// 4.5.18 AddDurationToTime ( operation, temporalTime, temporalDurationLike ), https://tc39.es/proposal-temporal/#sec-temporal-adddurationtotime
ThrowCompletionOr<GC::Ref<PlainTime>> add_duration_to_time(VM& vm, ArithmeticOperation operation, PlainTime const& temporal_time, Value temporal_duration_like)
{
// 1. Let duration be ? ToTemporalDuration(temporalDurationLike).
auto duration = TRY(to_temporal_duration(vm, temporal_duration_like));
// 2. If operation is SUBTRACT, set duration to CreateNegatedTemporalDuration(duration).
if (operation == ArithmeticOperation::Subtract)
duration = create_negated_temporal_duration(vm, duration);
// 3. Let internalDuration be ToInternalDurationRecord(duration).
auto internal_duration = to_internal_duration_record(vm, duration);
// 4. Let result be AddTime(temporalTime.[[Time]], internalDuration.[[Time]]).
auto result = add_time(temporal_time.time(), internal_duration.time);
// 5. Return ! CreateTemporalTime(result).
return MUST(create_temporal_time(vm, result));
}
}