27304017e3
The first step of to_temporal_calendar_with_iso_default() is checking whether the given value is undefined, so we should actually pass that instead of unconditionally dereferencing the Optional<String>.
508 lines
28 KiB
C++
508 lines
28 KiB
C++
/*
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* Copyright (c) 2021, Linus Groh <linusg@serenityos.org>
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* Copyright (c) 2021, Luke Wilde <lukew@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <LibJS/Runtime/AbstractOperations.h>
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#include <LibJS/Runtime/GlobalObject.h>
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#include <LibJS/Runtime/Temporal/Calendar.h>
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#include <LibJS/Runtime/Temporal/Duration.h>
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#include <LibJS/Runtime/Temporal/Instant.h>
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#include <LibJS/Runtime/Temporal/PlainDate.h>
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#include <LibJS/Runtime/Temporal/PlainDateTime.h>
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#include <LibJS/Runtime/Temporal/TimeZone.h>
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#include <LibJS/Runtime/Temporal/ZonedDateTime.h>
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#include <LibJS/Runtime/Temporal/ZonedDateTimeConstructor.h>
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namespace JS::Temporal {
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// 6 Temporal.ZonedDateTime Objects, https://tc39.es/proposal-temporal/#sec-temporal-zoneddatetime-objects
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ZonedDateTime::ZonedDateTime(BigInt const& nanoseconds, Object& time_zone, Object& calendar, Object& prototype)
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: Object(prototype)
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, m_nanoseconds(nanoseconds)
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, m_time_zone(time_zone)
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, m_calendar(calendar)
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{
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}
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void ZonedDateTime::visit_edges(Cell::Visitor& visitor)
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{
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Base::visit_edges(visitor);
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visitor.visit(&m_nanoseconds);
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visitor.visit(&m_time_zone);
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visitor.visit(&m_calendar);
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}
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// 6.5.1 InterpretISODateTimeOffset ( year, month, day, hour, minute, second, millisecond, microsecond, nanosecond, offsetBehaviour, offsetNanoseconds, timeZone, disambiguation, offsetOption, matchBehaviour ), https://tc39.es/proposal-temporal/#sec-temporal-interpretisodatetimeoffset
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ThrowCompletionOr<BigInt const*> interpret_iso_date_time_offset(GlobalObject& global_object, i32 year, u8 month, u8 day, u8 hour, u8 minute, u8 second, u16 millisecond, u16 microsecond, u16 nanosecond, OffsetBehavior offset_behavior, double offset_nanoseconds, Value time_zone, StringView disambiguation, StringView offset_option, MatchBehavior match_behavior)
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{
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auto& vm = global_object.vm();
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// 1. Assert: offsetNanoseconds is an integer.
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VERIFY(trunc(offset_nanoseconds) == offset_nanoseconds);
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// 2. Let calendar be ! GetISO8601Calendar().
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auto* calendar = get_iso8601_calendar(global_object);
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// 3. Let dateTime be ? CreateTemporalDateTime(year, month, day, hour, minute, second, millisecond, microsecond, nanosecond, calendar).
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auto* date_time = TRY(create_temporal_date_time(global_object, year, month, day, hour, minute, second, millisecond, microsecond, nanosecond, *calendar));
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// 4. If offsetBehaviour is wall, or offsetOption is "ignore", then
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if (offset_behavior == OffsetBehavior::Wall || offset_option == "ignore"sv) {
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// a. Let instant be ? BuiltinTimeZoneGetInstantFor(timeZone, dateTime, disambiguation).
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auto* instant = TRY(builtin_time_zone_get_instant_for(global_object, time_zone, *date_time, disambiguation));
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// b. Return instant.[[Nanoseconds]].
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return &instant->nanoseconds();
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}
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// 5. If offsetBehaviour is exact, or offsetOption is "use", then
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if (offset_behavior == OffsetBehavior::Exact || offset_option == "use"sv) {
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// a. Let epochNanoseconds be ! GetEpochFromISOParts(year, month, day, hour, minute, second, millisecond, microsecond, nanosecond).
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auto* epoch_nanoseconds = get_epoch_from_iso_parts(global_object, year, month, day, hour, minute, second, millisecond, microsecond, nanosecond);
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// b. Return epochNanoseconds − offsetNanoseconds.
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auto offset_nanoseconds_bigint = Crypto::SignedBigInteger::create_from((i64)offset_nanoseconds);
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return js_bigint(vm, epoch_nanoseconds->big_integer().minus(offset_nanoseconds_bigint));
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}
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// 6. Assert: offsetBehaviour is option.
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VERIFY(offset_behavior == OffsetBehavior::Option);
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// 7. Assert: offsetOption is "prefer" or "reject".
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VERIFY(offset_option.is_one_of("prefer"sv, "reject"sv));
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// 8. Let possibleInstants be ? GetPossibleInstantsFor(timeZone, dateTime).
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auto possible_instants = TRY(get_possible_instants_for(global_object, time_zone, *date_time));
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// 9. For each element candidate of possibleInstants, do
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for (auto& candidate_value : possible_instants) {
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// TODO: As per the comment in disambiguate_possible_instants, having a MarkedValueList<T> would allow us to remove this cast.
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auto& candidate = static_cast<Instant&>(candidate_value.as_object());
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// a. Let candidateNanoseconds be ? GetOffsetNanosecondsFor(timeZone, candidate).
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auto candidate_nanoseconds = TRY(get_offset_nanoseconds_for(global_object, time_zone, candidate));
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// b. If candidateNanoseconds = offsetNanoseconds, then
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if (candidate_nanoseconds == offset_nanoseconds) {
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// i. Return candidate.[[Nanoseconds]].
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return &candidate.nanoseconds();
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}
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// c. If matchBehaviour is match minutes, then
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if (match_behavior == MatchBehavior::MatchMinutes) {
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// i. Let roundedCandidateNanoseconds be ! RoundNumberToIncrement(candidateNanoseconds, 60 × 10^9, "halfExpand").
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auto rounded_candidate_nanoseconds = round_number_to_increment(candidate_nanoseconds, 60000000000, "halfExpand"sv);
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// ii. If roundedCandidateNanoseconds = offsetNanoseconds, then
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if (rounded_candidate_nanoseconds == offset_nanoseconds) {
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// 1. Return candidate.[[Nanoseconds]].
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return &candidate.nanoseconds();
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}
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}
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}
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// 10. If offsetOption is "reject", throw a RangeError exception.
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if (offset_option == "reject"sv)
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return vm.throw_completion<RangeError>(global_object, ErrorType::TemporalInvalidZonedDateTimeOffset);
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// 11. Let instant be ? DisambiguatePossibleInstants(possibleInstants, timeZone, dateTime, disambiguation).
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auto* instant = TRY(disambiguate_possible_instants(global_object, possible_instants, time_zone, *date_time, disambiguation));
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// 12. Return instant.[[Nanoseconds]].
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return &instant->nanoseconds();
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}
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// 6.5.2 ToTemporalZonedDateTime ( item [ , options ] ), https://tc39.es/proposal-temporal/#sec-temporal-totemporalzoneddatetime
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ThrowCompletionOr<ZonedDateTime*> to_temporal_zoned_date_time(GlobalObject& global_object, Value item, Object* options)
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{
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auto& vm = global_object.vm();
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// 1. If options is not present, set options to ! OrdinaryObjectCreate(null).
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if (!options)
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options = Object::create(global_object, nullptr);
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// 2. Let offsetBehaviour be option.
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auto offset_behavior = OffsetBehavior::Option;
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// 3. Let matchBehaviour be match exactly.
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auto match_behavior = MatchBehavior::MatchExactly;
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Object* calendar = nullptr;
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Object* time_zone = nullptr;
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Optional<String> offset_string;
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ISODateTime result;
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// 4. If Type(item) is Object, then
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if (item.is_object()) {
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auto& item_object = item.as_object();
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// a. If item has an [[InitializedTemporalZonedDateTime]] internal slot, then
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if (is<ZonedDateTime>(item_object)) {
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// i. Return item.
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return &static_cast<ZonedDateTime&>(item_object);
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}
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// b. Let calendar be ? GetTemporalCalendarWithISODefault(item).
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calendar = TRY(get_temporal_calendar_with_iso_default(global_object, item_object));
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// c. Let fieldNames be ? CalendarFields(calendar, « "day", "hour", "microsecond", "millisecond", "minute", "month", "monthCode", "nanosecond", "second", "year" »).
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auto field_names = TRY(calendar_fields(global_object, *calendar, { "day"sv, "hour"sv, "microsecond"sv, "millisecond"sv, "minute"sv, "month"sv, "monthCode"sv, "nanosecond"sv, "second"sv, "year"sv }));
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// d. Append "timeZone" to fieldNames.
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field_names.append("timeZone");
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// e. Append "offset" to fieldNames.
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field_names.append("offset");
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// f. Let fields be ? PrepareTemporalFields(item, fieldNames, « "timeZone" »).
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auto* fields = TRY(prepare_temporal_fields(global_object, item_object, field_names, { "timeZone"sv }));
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// g. Let timeZone be ? Get(fields, "timeZone").
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auto time_zone_value = TRY(fields->get(vm.names.timeZone));
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// h. Set timeZone to ? ToTemporalTimeZone(timeZone).
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time_zone = TRY(to_temporal_time_zone(global_object, time_zone_value));
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// i. Let offsetString be ? Get(fields, "offset").
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auto offset_string_value = TRY(fields->get(vm.names.offset));
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// j. If offsetString is undefined, then
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if (offset_string_value.is_undefined()) {
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// i. Set offsetBehaviour to wall.
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offset_behavior = OffsetBehavior::Wall;
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}
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// k. Else,
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else {
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// i. Set offsetString to ? ToString(offsetString).
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offset_string = TRY(offset_string_value.to_string(global_object));
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}
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// l. Let result be ? InterpretTemporalDateTimeFields(calendar, fields, options).
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result = TRY(interpret_temporal_date_time_fields(global_object, *calendar, *fields, *options));
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}
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// 5. Else,
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else {
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// a. Perform ? ToTemporalOverflow(options).
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(void)TRY(to_temporal_overflow(global_object, *options));
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// b. Let string be ? ToString(item).
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auto string = TRY(item.to_string(global_object));
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// c. Let result be ? ParseTemporalZonedDateTimeString(string).
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auto parsed_result = TRY(parse_temporal_zoned_date_time_string(global_object, string));
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// NOTE: The ISODateTime struct inside parsed_result will be moved into `result` at the end of this path to avoid mismatching names.
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// Thus, all remaining references to `result` in this path actually refers to `parsed_result`.
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// d. Assert: result.[[TimeZoneName]] is not undefined.
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VERIFY(parsed_result.time_zone.name.has_value());
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// e. Let offsetString be result.[[TimeZoneOffsetString]].
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offset_string = move(parsed_result.time_zone.offset);
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// f. If result.[[TimeZoneZ]] is true, then
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if (parsed_result.time_zone.z) {
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// i. Set offsetBehaviour to exact.
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offset_behavior = OffsetBehavior::Exact;
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}
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// g. Else if offsetString is undefined, then
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else if (!offset_string.has_value()) {
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// i. Set offsetBehaviour to wall.
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offset_behavior = OffsetBehavior::Wall;
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}
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// h. Let timeZone be ? CreateTemporalTimeZone(result.[[TimeZoneName]]).
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time_zone = TRY(create_temporal_time_zone(global_object, *parsed_result.time_zone.name));
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// i. Let calendar be ? ToTemporalCalendarWithISODefault(result.[[Calendar]]).
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auto temporal_calendar_like = parsed_result.date_time.calendar.has_value()
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? js_string(vm, parsed_result.date_time.calendar.value())
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: js_undefined();
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calendar = TRY(to_temporal_calendar_with_iso_default(global_object, temporal_calendar_like));
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// j. Set matchBehaviour to match minutes.
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match_behavior = MatchBehavior::MatchMinutes;
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// See NOTE above about why this is done.
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result = move(parsed_result.date_time);
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}
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// 6. Let offsetNanoseconds be 0.
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double offset_nanoseconds = 0;
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// 7. If offsetBehaviour is option, then
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if (offset_behavior == OffsetBehavior::Option) {
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// a. Set offsetNanoseconds to ? ParseTimeZoneOffsetString(offsetString).
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offset_nanoseconds = TRY(parse_time_zone_offset_string(global_object, *offset_string));
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}
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// 8. Let disambiguation be ? ToTemporalDisambiguation(options).
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auto disambiguation = TRY(to_temporal_disambiguation(global_object, *options));
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// 9. Let offsetOption be ? ToTemporalOffset(options, "reject").
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auto offset_option = TRY(to_temporal_offset(global_object, *options, "reject"));
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// 10. Let epochNanoseconds be ? InterpretISODateTimeOffset(result.[[Year]], result.[[Month]], result.[[Day]], result.[[Hour]], result.[[Minute]], result.[[Second]], result.[[Millisecond]], result.[[Microsecond]], result.[[Nanosecond]], offsetBehaviour, offsetNanoseconds, timeZone, disambiguation, offsetOption, matchBehaviour).
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auto* epoch_nanoseconds = TRY(interpret_iso_date_time_offset(global_object, result.year, result.month, result.day, result.hour, result.minute, result.second, result.millisecond, result.microsecond, result.nanosecond, offset_behavior, offset_nanoseconds, time_zone, disambiguation, offset_option, match_behavior));
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// 11. Return ! CreateTemporalZonedDateTime(epochNanoseconds, timeZone, calendar).
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return MUST(create_temporal_zoned_date_time(global_object, *epoch_nanoseconds, *time_zone, *calendar));
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}
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// 6.5.3 CreateTemporalZonedDateTime ( epochNanoseconds, timeZone, calendar [ , newTarget ] ), https://tc39.es/proposal-temporal/#sec-temporal-createtemporalzoneddatetime
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ThrowCompletionOr<ZonedDateTime*> create_temporal_zoned_date_time(GlobalObject& global_object, BigInt const& epoch_nanoseconds, Object& time_zone, Object& calendar, FunctionObject const* new_target)
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{
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// 1. Assert: Type(epochNanoseconds) is BigInt.
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// 3. Assert: Type(timeZone) is Object.
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// 4. Assert: Type(calendar) is Object.
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// 2. Assert: ! IsValidEpochNanoseconds(epochNanoseconds) is true.
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VERIFY(is_valid_epoch_nanoseconds(epoch_nanoseconds));
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// 5. If newTarget is not present, set it to %Temporal.ZonedDateTime%.
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if (!new_target)
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new_target = global_object.temporal_zoned_date_time_constructor();
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// 6. Let object be ? OrdinaryCreateFromConstructor(newTarget, "%Temporal.ZonedDateTime.prototype%", « [[InitializedTemporalZonedDateTime]], [[Nanoseconds]], [[TimeZone]], [[Calendar]] »).
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// 7. Set object.[[Nanoseconds]] to epochNanoseconds.
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// 8. Set object.[[TimeZone]] to timeZone.
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// 9. Set object.[[Calendar]] to calendar.
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auto* object = TRY(ordinary_create_from_constructor<ZonedDateTime>(global_object, *new_target, &GlobalObject::temporal_time_zone_prototype, epoch_nanoseconds, time_zone, calendar));
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// 10. Return object.
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return object;
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}
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// 6.5.4 TemporalZonedDateTimeToString ( zonedDateTime, precision, showCalendar, showTimeZone, showOffset [ , increment, unit, roundingMode ] ), https://tc39.es/proposal-temporal/#sec-temporal-temporalzoneddatetimetostring
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ThrowCompletionOr<String> temporal_zoned_date_time_to_string(GlobalObject& global_object, ZonedDateTime& zoned_date_time, Variant<StringView, u8> const& precision, StringView show_calendar, StringView show_time_zone, StringView show_offset, Optional<u64> increment, Optional<StringView> unit, Optional<StringView> rounding_mode)
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{
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// 1. Assert: Type(zonedDateTime) is Object and zonedDateTime has an [[InitializedTemporalZonedDateTime]] internal slot.
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// 2. If increment is not present, set it to 1.
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if (!increment.has_value())
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increment = 1;
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// 3. If unit is not present, set it to "nanosecond".
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if (!unit.has_value())
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unit = "nanosecond"sv;
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// 4. If roundingMode is not present, set it to "trunc".
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if (!rounding_mode.has_value())
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rounding_mode = "trunc"sv;
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// 5. Let ns be ! RoundTemporalInstant(zonedDateTime.[[Nanoseconds]], increment, unit, roundingMode).
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auto* ns = round_temporal_instant(global_object, zoned_date_time.nanoseconds(), *increment, *unit, *rounding_mode);
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// 6. Let timeZone be zonedDateTime.[[TimeZone]].
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auto& time_zone = zoned_date_time.time_zone();
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// 7. Let instant be ! CreateTemporalInstant(ns).
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auto* instant = MUST(create_temporal_instant(global_object, *ns));
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// 8. Let isoCalendar be ! GetISO8601Calendar().
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auto* iso_calendar = get_iso8601_calendar(global_object);
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// 9. Let temporalDateTime be ? BuiltinTimeZoneGetPlainDateTimeFor(timeZone, instant, isoCalendar).
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auto* temporal_date_time = TRY(builtin_time_zone_get_plain_date_time_for(global_object, &time_zone, *instant, *iso_calendar));
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// 10. Let dateTimeString be ? TemporalDateTimeToString(temporalDateTime.[[ISOYear]], temporalDateTime.[[ISOMonth]], temporalDateTime.[[ISODay]], temporalDateTime.[[ISOHour]], temporalDateTime.[[ISOMinute]], temporalDateTime.[[ISOSecond]], temporalDateTime.[[ISOMillisecond]], temporalDateTime.[[ISOMicrosecond]], temporalDateTime.[[ISONanosecond]], isoCalendar, precision, "never").
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auto date_time_string = TRY(temporal_date_time_to_string(global_object, temporal_date_time->iso_year(), temporal_date_time->iso_month(), temporal_date_time->iso_day(), temporal_date_time->iso_hour(), temporal_date_time->iso_minute(), temporal_date_time->iso_second(), temporal_date_time->iso_millisecond(), temporal_date_time->iso_microsecond(), temporal_date_time->iso_nanosecond(), iso_calendar, precision, "never"sv));
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String offset_string;
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// 11. If showOffset is "never", then
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if (show_offset == "never"sv) {
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// a. Let offsetString be the empty String.
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offset_string = String::empty();
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}
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// Else,
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else {
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// a. Let offsetNs be ? GetOffsetNanosecondsFor(timeZone, instant).
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auto offset_ns = TRY(get_offset_nanoseconds_for(global_object, &time_zone, *instant));
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// b. Let offsetString be ! FormatISOTimeZoneOffsetString(offsetNs).
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offset_string = format_iso_time_zone_offset_string(offset_ns);
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}
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String time_zone_string;
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// 13. If showTimeZone is "never", then
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if (show_time_zone == "never"sv) {
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// a. Let timeZoneString be the empty String.
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time_zone_string = String::empty();
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}
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// 14. Else,
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else {
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// a. Let timeZoneID be ? ToString(timeZone).
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auto time_zone_id = TRY(Value(&time_zone).to_string(global_object));
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// b. Let timeZoneString be the string-concatenation of the code unit 0x005B (LEFT SQUARE BRACKET), timeZoneID, and the code unit 0x005D (RIGHT SQUARE BRACKET).
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time_zone_string = String::formatted("[{}]", time_zone_id);
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}
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// 15. Let calendarID be ? ToString(zonedDateTime.[[Calendar]]).
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auto calendar_id = TRY(Value(&zoned_date_time.calendar()).to_string(global_object));
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// 16. Let calendarString be ! FormatCalendarAnnotation(calendarID, showCalendar).
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auto calendar_string = format_calendar_annotation(calendar_id, show_calendar);
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// 17. Return the string-concatenation of dateTimeString, offsetString, timeZoneString, and calendarString.
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return String::formatted("{}{}{}{}", date_time_string, offset_string, time_zone_string, calendar_string);
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}
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// 6.5.5 AddZonedDateTime ( epochNanoseconds, timeZone, calendar, years, months, weeks, days, hours, minutes, seconds, milliseconds, microseconds, nanoseconds [ , options ] ), https://tc39.es/proposal-temporal/#sec-temporal-addzoneddatetime
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ThrowCompletionOr<BigInt*> add_zoned_date_time(GlobalObject& global_object, BigInt const& epoch_nanoseconds, Value time_zone, Object& calendar, double years, double months, double weeks, double days, double hours, double minutes, double seconds, double milliseconds, double microseconds, double nanoseconds, Object* options)
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{
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// 1. If options is not present, set options to ! OrdinaryObjectCreate(null).
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if (!options)
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options = Object::create(global_object, nullptr);
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// 2. If all of years, months, weeks, and days are 0, then
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if (years == 0 && months == 0 && weeks == 0 && days == 0) {
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// a. Return ! AddInstant(epochNanoseconds, hours, minutes, seconds, milliseconds, microseconds, nanoseconds).
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return MUST(add_instant(global_object, epoch_nanoseconds, hours, minutes, seconds, milliseconds, microseconds, nanoseconds));
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}
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// 3. Let instant be ! CreateTemporalInstant(epochNanoseconds).
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auto* instant = MUST(create_temporal_instant(global_object, epoch_nanoseconds));
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// 4. Let temporalDateTime be ? BuiltinTimeZoneGetPlainDateTimeFor(timeZone, instant, calendar).
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auto* temporal_date_time = TRY(builtin_time_zone_get_plain_date_time_for(global_object, time_zone, *instant, calendar));
|
||
|
||
// 5. Let datePart be ? CreateTemporalDate(temporalDateTime.[[ISOYear]], temporalDateTime.[[ISOMonth]], temporalDateTime.[[ISODay]], calendar).
|
||
auto* date_part = TRY(create_temporal_date(global_object, temporal_date_time->iso_year(), temporal_date_time->iso_month(), temporal_date_time->iso_day(), calendar));
|
||
|
||
// 6. Let dateDuration be ? CreateTemporalDuration(years, months, weeks, days, 0, 0, 0, 0, 0, 0).
|
||
auto* date_duration = TRY(create_temporal_duration(global_object, years, months, weeks, days, 0, 0, 0, 0, 0, 0));
|
||
|
||
// 7. Let addedDate be ? CalendarDateAdd(calendar, datePart, dateDuration, options).
|
||
auto* added_date = TRY(calendar_date_add(global_object, calendar, date_part, *date_duration, options));
|
||
|
||
// 8. Let intermediateDateTime be ? CreateTemporalDateTime(addedDate.[[ISOYear]], addedDate.[[ISOMonth]], addedDate.[[ISODay]], temporalDateTime.[[ISOHour]], temporalDateTime.[[ISOMinute]], temporalDateTime.[[ISOSecond]], temporalDateTime.[[ISOMillisecond]], temporalDateTime.[[ISOMicrosecond]], temporalDateTime.[[ISONanosecond]], calendar).
|
||
auto* intermediate_date_time = TRY(create_temporal_date_time(global_object, added_date->iso_year(), added_date->iso_month(), added_date->iso_day(), temporal_date_time->iso_hour(), temporal_date_time->iso_minute(), temporal_date_time->iso_second(), temporal_date_time->iso_millisecond(), temporal_date_time->iso_microsecond(), temporal_date_time->iso_nanosecond(), calendar));
|
||
|
||
// 9. Let intermediateInstant be ? BuiltinTimeZoneGetInstantFor(timeZone, intermediateDateTime, "compatible").
|
||
auto* intermediate_instant = TRY(builtin_time_zone_get_instant_for(global_object, time_zone, *intermediate_date_time, "compatible"sv));
|
||
|
||
// 10. Return ! AddInstant(intermediateInstant.[[Nanoseconds]], hours, minutes, seconds, milliseconds, microseconds, nanoseconds).
|
||
return MUST(add_instant(global_object, intermediate_instant->nanoseconds(), hours, minutes, seconds, milliseconds, microseconds, nanoseconds));
|
||
}
|
||
|
||
// 6.5.7 NanosecondsToDays ( nanoseconds, relativeTo ), https://tc39.es/proposal-temporal/#sec-temporal-nanosecondstodays
|
||
ThrowCompletionOr<NanosecondsToDaysResult> nanoseconds_to_days(GlobalObject& global_object, BigInt const& nanoseconds_bigint, Value relative_to_value)
|
||
{
|
||
auto& vm = global_object.vm();
|
||
|
||
// 1. Assert: Type(nanoseconds) is BigInt.
|
||
|
||
// 2. Set nanoseconds to ℝ(nanoseconds).
|
||
auto nanoseconds = nanoseconds_bigint.big_integer();
|
||
|
||
// 3. Let sign be ! ℝ(Sign(𝔽(nanoseconds))).
|
||
i8 sign;
|
||
if (nanoseconds == Crypto::UnsignedBigInteger { 0 })
|
||
sign = 0;
|
||
else if (nanoseconds.is_negative())
|
||
sign = -1;
|
||
else
|
||
sign = 1;
|
||
|
||
// 4. Let dayLengthNs be 8.64 × 10^13.
|
||
auto day_length_ns = "86400000000000"_sbigint;
|
||
|
||
// 5. If sign is 0, then
|
||
if (sign == 0) {
|
||
// a. Return the Record { [[Days]]: 0, [[Nanoseconds]]: 0, [[DayLength]]: dayLengthNs }.
|
||
return NanosecondsToDaysResult { .days = 0, .nanoseconds = make_handle(js_bigint(vm, { 0 })), .day_length = day_length_ns.to_double() };
|
||
}
|
||
|
||
// 6. If Type(relativeTo) is not Object or relativeTo does not have an [[InitializedTemporalZonedDateTime]] internal slot, then
|
||
if (!relative_to_value.is_object() || !is<ZonedDateTime>(relative_to_value.as_object())) {
|
||
// a. Return the Record { [[Days]]: the integral part of nanoseconds / dayLengthNs, [[Nanoseconds]]: (abs(nanoseconds) modulo dayLengthNs) × sign, [[DayLength]]: dayLengthNs }.
|
||
return NanosecondsToDaysResult {
|
||
.days = nanoseconds.divided_by(day_length_ns).quotient.to_double(),
|
||
.nanoseconds = make_handle(js_bigint(vm, Crypto::SignedBigInteger { nanoseconds.unsigned_value() }.divided_by(day_length_ns).remainder.multiplied_by(Crypto::SignedBigInteger { sign }))),
|
||
.day_length = day_length_ns.to_double()
|
||
};
|
||
}
|
||
|
||
auto& relative_to = static_cast<ZonedDateTime&>(relative_to_value.as_object());
|
||
|
||
// 7. Let startNs be ℝ(relativeTo.[[Nanoseconds]]).
|
||
auto& start_ns = relative_to.nanoseconds().big_integer();
|
||
|
||
// 8. Let startInstant be ! CreateTemporalInstant(ℤ(startNs)).
|
||
auto* start_instant = MUST(create_temporal_instant(global_object, *js_bigint(vm, start_ns)));
|
||
|
||
// 9. Let startDateTime be ? BuiltinTimeZoneGetPlainDateTimeFor(relativeTo.[[TimeZone]], startInstant, relativeTo.[[Calendar]]).
|
||
auto* start_date_time = TRY(builtin_time_zone_get_plain_date_time_for(global_object, &relative_to.time_zone(), *start_instant, relative_to.calendar()));
|
||
|
||
// 10. Let endNs be startNs + nanoseconds.
|
||
auto end_ns = start_ns.plus(nanoseconds);
|
||
|
||
// 11. Let endInstant be ! CreateTemporalInstant(ℤ(endNs)).
|
||
auto* end_instant = MUST(create_temporal_instant(global_object, *js_bigint(vm, end_ns)));
|
||
|
||
// 12. Let endDateTime be ? BuiltinTimeZoneGetPlainDateTimeFor(relativeTo.[[TimeZone]], endInstant, relativeTo.[[Calendar]]).
|
||
auto* end_date_time = TRY(builtin_time_zone_get_plain_date_time_for(global_object, &relative_to.time_zone(), *end_instant, relative_to.calendar()));
|
||
|
||
// 13. Let dateDifference be ? DifferenceISODateTime(startDateTime.[[ISOYear]], startDateTime.[[ISOMonth]], startDateTime.[[ISODay]], startDateTime.[[ISOHour]], startDateTime.[[ISOMinute]], startDateTime.[[ISOSecond]], startDateTime.[[ISOMillisecond]], startDateTime.[[ISOMicrosecond]], startDateTime.[[ISONanosecond]], endDateTime.[[ISOYear]], endDateTime.[[ISOMonth]], endDateTime.[[ISODay]], endDateTime.[[ISOHour]], endDateTime.[[ISOMinute]], endDateTime.[[ISOSecond]], endDateTime.[[ISOMillisecond]], endDateTime.[[ISOMicrosecond]], endDateTime.[[ISONanosecond]], relativeTo.[[Calendar]], "day").
|
||
auto date_difference = TRY(difference_iso_date_time(global_object, start_date_time->iso_year(), start_date_time->iso_month(), start_date_time->iso_day(), start_date_time->iso_hour(), start_date_time->iso_minute(), start_date_time->iso_second(), start_date_time->iso_millisecond(), start_date_time->iso_microsecond(), start_date_time->iso_nanosecond(), end_date_time->iso_year(), end_date_time->iso_month(), end_date_time->iso_day(), end_date_time->iso_hour(), end_date_time->iso_minute(), end_date_time->iso_second(), end_date_time->iso_millisecond(), end_date_time->iso_microsecond(), end_date_time->iso_nanosecond(), relative_to.calendar(), "day"sv));
|
||
|
||
// 14. Let days be dateDifference.[[Days]].
|
||
auto days = date_difference.days;
|
||
|
||
// 15. Let intermediateNs be ℝ(? AddZonedDateTime(ℤ(startNs), relativeTo.[[TimeZone]], relativeTo.[[Calendar]], 0, 0, 0, days, 0, 0, 0, 0, 0, 0)).
|
||
auto intermediate_ns = TRY(add_zoned_date_time(global_object, *js_bigint(vm, start_ns), &relative_to.time_zone(), relative_to.calendar(), 0, 0, 0, days, 0, 0, 0, 0, 0, 0))->big_integer();
|
||
|
||
// 16. If sign is 1, then
|
||
if (sign == 1) {
|
||
// a. Repeat, while days > 0 and intermediateNs > endNs,
|
||
while (days > 0 && intermediate_ns > end_ns) {
|
||
// i. Set days to days − 1.
|
||
days--;
|
||
|
||
// ii. Set intermediateNs to ℝ(? AddZonedDateTime(ℤ(startNs), relativeTo.[[TimeZone]], relativeTo.[[Calendar]], 0, 0, 0, days, 0, 0, 0, 0, 0, 0)).
|
||
intermediate_ns = TRY(add_zoned_date_time(global_object, *js_bigint(vm, start_ns), &relative_to.time_zone(), relative_to.calendar(), 0, 0, 0, days, 0, 0, 0, 0, 0, 0))->big_integer();
|
||
}
|
||
}
|
||
|
||
// 17. Set nanoseconds to endNs − intermediateNs.
|
||
nanoseconds = end_ns.minus(intermediate_ns);
|
||
|
||
// 18. Let done be false.
|
||
// 19. Repeat, while done is false,
|
||
while (true) {
|
||
// a. Let oneDayFartherNs be ℝ(? AddZonedDateTime(ℤ(intermediateNs), relativeTo.[[TimeZone]], relativeTo.[[Calendar]], 0, 0, 0, sign, 0, 0, 0, 0, 0, 0)).
|
||
auto one_day_farther_ns = TRY(add_zoned_date_time(global_object, *js_bigint(vm, intermediate_ns), &relative_to.time_zone(), relative_to.calendar(), 0, 0, 0, sign, 0, 0, 0, 0, 0, 0))->big_integer();
|
||
|
||
// b. Set dayLengthNs to oneDayFartherNs − intermediateNs.
|
||
day_length_ns = one_day_farther_ns.minus(intermediate_ns);
|
||
|
||
// c. If (nanoseconds − dayLengthNs) × sign ≥ 0, then
|
||
if (nanoseconds.minus(day_length_ns).multiplied_by(Crypto::SignedBigInteger { sign }) >= "0"_sbigint) {
|
||
// i. Set nanoseconds to nanoseconds − dayLengthNs.
|
||
nanoseconds = nanoseconds.minus(day_length_ns);
|
||
|
||
// ii. Set intermediateNs to oneDayFartherNs.
|
||
intermediate_ns = move(one_day_farther_ns);
|
||
|
||
// iii. Set days to days + sign.
|
||
days += sign;
|
||
}
|
||
// d. Else,
|
||
else {
|
||
// i. Set done to true.
|
||
break;
|
||
}
|
||
}
|
||
|
||
// 20. Return the Record { [[Days]]: days, [[Nanoseconds]]: nanoseconds, [[DayLength]]: abs(dayLengthNs) }.
|
||
return NanosecondsToDaysResult { .days = days, .nanoseconds = make_handle(js_bigint(vm, move(nanoseconds))), .day_length = fabs(day_length_ns.to_double()) };
|
||
}
|
||
|
||
}
|