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LibJS: Simplify ParseTemporalTimeZoneString

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This is an editorial change in the Temporal spec.
See: eec8efab
This commit is contained in:
Idan Horowitz 2022-10-20 00:19:09 +03:00 • committed by Linus Groh
parent 0c61552b81
commit d38aeddd77
3 changed files with 21 additions and 52 deletions
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49
Userland/Libraries/LibJS/Runtime/Temporal/AbstractOperations.cpp
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@ -1666,41 +1666,30 @@ ThrowCompletionOr<TemporalTime> parse_temporal_time_string(VM& vm, String const&
return TemporalTime { .hour = result.hour, .minute = result.minute, .second = result.second, .millisecond = result.millisecond, .microsecond = result.microsecond, .nanosecond = result.nanosecond, .calendar = move(result.calendar) };
}
// 13.38 ParseTemporalTimeZoneString ( isoString ), https://tc39.es/proposal-temporal/#sec-temporal-parsetemporaltimezonestring
ThrowCompletionOr<TemporalTimeZone> parse_temporal_time_zone_string(VM& vm, String const& iso_string)
// 13.38 ParseTemporalTimeZoneString ( timeZoneString ), https://tc39.es/proposal-temporal/#sec-temporal-parsetemporaltimezonestring
ThrowCompletionOr<TemporalTimeZone> parse_temporal_time_zone_string(VM& vm, String const& time_zone_string)
{
// 1. Let parseResult be ParseText(StringToCodePoints(isoString), TemporalTimeZoneString).
auto parse_result = parse_iso8601(Production::TemporalTimeZoneString, iso_string);
// 1. Let parseResult be ParseText(StringToCodePoints(timeZoneString), TimeZoneIdentifier).
auto parse_result = parse_iso8601(Production::TimeZoneIdentifier, time_zone_string);
// 2. If parseResult is a List of errors, throw a RangeError exception.
if (!parse_result.has_value())
return vm.throw_completion<RangeError>(ErrorType::TemporalInvalidTimeZoneString, iso_string);
// 3. Let each of z, offsetString, and name be the source text matched by the respective UTCDesignator, TimeZoneNumericUTCOffset, and TimeZoneIdentifier Parse Nodes contained within parseResult, or an empty sequence of code points if not present.
auto z = parse_result->utc_designator;
auto offset_string = parse_result->time_zone_numeric_utc_offset;
auto name = parse_result->time_zone_identifier;
// 4. If name is empty, then
// a. Set name to undefined.
// 5. Else,
// a. Set name to CodePointsToString(name).
// NOTE: No-op.
// 6. If z is not empty, then
if (z.has_value()) {
// a. Return the Record { [[Z]]: true, [[OffsetString]]: undefined, [[Name]]: name }.
return TemporalTimeZone { .z = true, .offset_string = {}, .name = Optional<String>(move(name)) };
// 2. If parseResult is a Parse Node, then
if (parse_result.has_value()) {
// a. Return the Record { [[Z]]: false, [[OffsetString]]: undefined, [[Name]]: timeZoneString }.
return TemporalTimeZone { .z = false, .offset_string = {}, .name = time_zone_string };
}
// 7. If offsetString is empty, then
// a. Set offsetString to undefined.
// 8. Else,
// a. Set offsetString to CodePointsToString(offsetString).
// NOTE: No-op.
// 3. Let result be ? ParseISODateTime(timeZoneString).
auto result = TRY(parse_iso_date_time(vm, time_zone_string));
// 9. Return the Record { [[Z]]: false, [[OffsetString]]: offsetString, [[Name]]: name }.
return TemporalTimeZone { .z = false, .offset_string = Optional<String>(move(offset_string)), .name = Optional<String>(move(name)) };
// 4. Let timeZoneResult be result.[[TimeZone]].
auto const& time_zone_result = result.time_zone;
// 5. If timeZoneResult.[[Z]] is false, timeZoneResult.[[OffsetString]] is undefined, and timeZoneResult.[[Name]] is undefined, throw a RangeError exception.
if (!time_zone_result.z && !time_zone_result.offset_string.has_value() && !time_zone_result.name.has_value())
return vm.throw_completion<RangeError>(ErrorType::TemporalInvalidTimeZoneString, time_zone_string);
// 6. Return timeZoneResult.
return time_zone_result;
}
// 13.39 ParseTemporalYearMonthString ( isoString ), https://tc39.es/proposal-temporal/#sec-temporal-parsetemporalyearmonthstring