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LibJS: Refactor Temporal add/subtract to common AOs

This is an editorial change in the Temporal spec.

See:
- 2f96efc
- fbff635
This commit is contained in:
Linus Groh 2022-05-06 19:01:15 +02:00
parent 875093e6a9
commit 3729a910f6
19 changed files with 259 additions and 280 deletions

View file

@ -281,4 +281,20 @@ ThrowCompletionOr<String> temporal_instant_to_string(GlobalObject& global_object
return String::formatted("{}{}", date_time_string, time_zone_string);
}
// 8.5.10 AddDurationToOrSubtractDurationFromInstant ( operation, instant, temporalDurationLike ), https://tc39.es/proposal-temporal/#sec-temporal-adddurationtoorsubtractdurationfrominstant
ThrowCompletionOr<Instant*> add_duration_to_or_subtract_duration_from_instant(GlobalObject& global_object, ArithmeticOperation operation, Instant const& instant, Value temporal_duration_like)
{
// 1. If operation is subtract, let sign be -1. Otherwise, let sign be 1.
i8 sign = operation == ArithmeticOperation::Subtract ? -1 : 1;
// 2. Let duration be ? ToLimitedTemporalDuration(temporalDurationLike, « "years", "months", "weeks", "days" »).
auto duration = TRY(to_limited_temporal_duration(global_object, temporal_duration_like, { "years"sv, "months"sv, "weeks"sv, "days"sv }));
// 3. Let ns be ? AddInstant(instant.[[Nanoseconds]], sign × duration.[[Hours]], sign × duration.[[Minutes]], sign × duration.[[Seconds]], sign × duration.[[Milliseconds]], sign × duration.[[Microseconds]], sign × duration.[[Nanoseconds]]).
auto* ns = TRY(add_instant(global_object, instant.nanoseconds(), sign * duration.hours, sign * duration.minutes, sign * duration.seconds, sign * duration.milliseconds, sign * duration.microseconds, sign * duration.nanoseconds));
// 4. Return ! CreateTemporalInstant(ns).
return MUST(create_temporal_instant(global_object, *ns));
}
}