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- /*
- * Copyright (c) 2021-2022, Linus Groh <linusg@serenityos.org>
- * Copyright (c) 2021, Luke Wilde <lukew@serenityos.org>
- *
- * SPDX-License-Identifier: BSD-2-Clause
- */
- #include <LibJS/Runtime/AbstractOperations.h>
- #include <LibJS/Runtime/GlobalObject.h>
- #include <LibJS/Runtime/Temporal/Calendar.h>
- #include <LibJS/Runtime/Temporal/PlainDate.h>
- #include <LibJS/Runtime/Temporal/PlainDateTime.h>
- #include <LibJS/Runtime/Temporal/PlainMonthDay.h>
- #include <LibJS/Runtime/Temporal/PlainMonthDayConstructor.h>
- #include <LibJS/Runtime/Temporal/PlainTime.h>
- #include <LibJS/Runtime/Temporal/ZonedDateTime.h>
- namespace JS::Temporal {
- // 10 Temporal.PlainMonthDay Objects, https://tc39.es/proposal-temporal/#sec-temporal-plainmonthday-objects
- PlainMonthDay::PlainMonthDay(u8 iso_month, u8 iso_day, i32 iso_year, Object& calendar, Object& prototype)
- : Object(prototype)
- , m_iso_year(iso_year)
- , m_iso_month(iso_month)
- , m_iso_day(iso_day)
- , m_calendar(calendar)
- {
- }
- void PlainMonthDay::visit_edges(Visitor& visitor)
- {
- Base::visit_edges(visitor);
- visitor.visit(&m_calendar);
- }
- // 10.5.1 ToTemporalMonthDay ( item [ , options ] ), https://tc39.es/proposal-temporal/#sec-temporal-totemporalmonthday
- ThrowCompletionOr<PlainMonthDay*> to_temporal_month_day(GlobalObject& global_object, Value item, Object const* options)
- {
- auto& vm = global_object.vm();
- // 1. If options is not present, set options to undefined.
- // 2. Assert: Type(options) is Object or Undefined.
- // 3. Let referenceISOYear be 1972 (the first leap year after the Unix epoch).
- i32 reference_iso_year = 1972;
- // 4. If Type(item) is Object, then
- if (item.is_object()) {
- auto& item_object = item.as_object();
- // a. If item has an [[InitializedTemporalMonthDay]] internal slot, then
- if (is<PlainMonthDay>(item_object)) {
- // i. Return item.
- return static_cast<PlainMonthDay*>(&item_object);
- }
- Object* calendar = nullptr;
- bool calendar_absent;
- // b. If item has an [[InitializedTemporalDate]], [[InitializedTemporalDateTime]], [[InitializedTemporalTime]], [[InitializedTemporalYearMonth]], or [[InitializedTemporalZonedDateTime]] internal slot, then
- // i. Let calendar be item.[[Calendar]].
- // ii. Let calendarAbsent be false.
- if (is<PlainDate>(item_object)) {
- calendar = &static_cast<PlainDate&>(item_object).calendar();
- calendar_absent = false;
- } else if (is<PlainDateTime>(item_object)) {
- calendar = &static_cast<PlainDateTime&>(item_object).calendar();
- calendar_absent = false;
- } else if (is<PlainMonthDay>(item_object)) {
- calendar = &static_cast<PlainMonthDay&>(item_object).calendar();
- calendar_absent = false;
- } else if (is<PlainTime>(item_object)) {
- calendar = &static_cast<PlainTime&>(item_object).calendar();
- calendar_absent = false;
- } else if (is<PlainYearMonth>(item_object)) {
- calendar = &static_cast<PlainYearMonth&>(item_object).calendar();
- calendar_absent = false;
- } else if (is<ZonedDateTime>(item_object)) {
- calendar = &static_cast<ZonedDateTime&>(item_object).calendar();
- calendar_absent = false;
- } else {
- // i. Let calendarLike be ? Get(item, "calendar").
- auto calendar_like = TRY(item_object.get(vm.names.calendar));
- // ii. If calendarLike is undefined, then
- // 1. Let calendarAbsent be true.
- // iii. Else,
- // 1. Let calendarAbsent be false.
- calendar_absent = calendar_like.is_undefined();
- // iv. Let calendar be ? ToTemporalCalendarWithISODefault(calendarLike).
- calendar = TRY(to_temporal_calendar_with_iso_default(global_object, calendar_like));
- }
- // d. Let fieldNames be ? CalendarFields(calendar, « "day", "month", "monthCode", "year" »).
- auto field_names = TRY(calendar_fields(global_object, *calendar, { "day"sv, "month"sv, "monthCode"sv, "year"sv }));
- // e. Let fields be ? PrepareTemporalFields(item, fieldNames, «»).
- auto* fields = TRY(prepare_temporal_fields(global_object, item_object, field_names, {}));
- // f. Let month be ? Get(fields, "month").
- auto month = TRY(fields->get(vm.names.month));
- // g. Let monthCode be ? Get(fields, "monthCode").
- auto month_code = TRY(fields->get(vm.names.monthCode));
- // h. Let year be ? Get(fields, "year").
- auto year = TRY(fields->get(vm.names.year));
- // i. If calendarAbsent is true, and month is not undefined, and monthCode is undefined and year is undefined, then
- if (calendar_absent && !month.is_undefined() && month_code.is_undefined() && year.is_undefined()) {
- // i. Perform ! CreateDataPropertyOrThrow(fields, "year", 𝔽(referenceISOYear)).
- MUST(fields->create_data_property_or_throw(vm.names.year, Value(reference_iso_year)));
- }
- // j. Return ? MonthDayFromFields(calendar, fields, options).
- return month_day_from_fields(global_object, *calendar, *fields, options);
- }
- // 5. Perform ? ToTemporalOverflow(options).
- (void)TRY(to_temporal_overflow(global_object, options));
- // 6. Let string be ? ToString(item).
- auto string = TRY(item.to_string(global_object));
- // 7. Let result be ? ParseTemporalMonthDayString(string).
- auto result = TRY(parse_temporal_month_day_string(global_object, string));
- // 8. Let calendar be ? ToTemporalCalendarWithISODefault(result.[[Calendar]]).
- auto* calendar = TRY(to_temporal_calendar_with_iso_default(global_object, result.calendar.has_value() ? js_string(vm, move(*result.calendar)) : js_undefined()));
- // 9. If result.[[Year]] is undefined, then
- if (!result.year.has_value()) {
- // a. Return ? CreateTemporalMonthDay(result.[[Month]], result.[[Day]], calendar, referenceISOYear).
- return TRY(create_temporal_month_day(global_object, result.month, result.day, *calendar, reference_iso_year));
- }
- // 10. Set result to ? CreateTemporalMonthDay(result.[[Month]], result.[[Day]], calendar, referenceISOYear).
- auto* plain_month_day = TRY(create_temporal_month_day(global_object, result.month, result.day, *calendar, reference_iso_year));
- // 11. NOTE: The following operation is called without options, in order for the calendar to store a canonical value in the [[ISOYear]] internal slot of the result.
- // 12. Return ? MonthDayFromFields(calendar, result).
- return TRY(month_day_from_fields(global_object, *calendar, *plain_month_day));
- }
- // 10.5.2 CreateTemporalMonthDay ( isoMonth, isoDay, calendar, referenceISOYear [ , newTarget ] ), https://tc39.es/proposal-temporal/#sec-temporal-createtemporalmonthday
- ThrowCompletionOr<PlainMonthDay*> create_temporal_month_day(GlobalObject& global_object, u8 iso_month, u8 iso_day, Object& calendar, i32 reference_iso_year, FunctionObject const* new_target)
- {
- auto& vm = global_object.vm();
- // 1. Assert: isoMonth, isoDay, and referenceISOYear are integers.
- // 2. Assert: Type(calendar) is Object.
- // 3. If ! IsValidISODate(referenceISOYear, isoMonth, isoDay) is false, throw a RangeError exception.
- if (!is_valid_iso_date(reference_iso_year, iso_month, iso_day))
- return vm.throw_completion<RangeError>(global_object, ErrorType::TemporalInvalidPlainMonthDay);
- // 4. If newTarget is not present, set newTarget to %Temporal.PlainMonthDay%.
- if (!new_target)
- new_target = global_object.temporal_plain_month_day_constructor();
- // 5. Let object be ? OrdinaryCreateFromConstructor(newTarget, "%Temporal.PlainMonthDay.prototype%", « [[InitializedTemporalMonthDay]], [[ISOMonth]], [[ISODay]], [[ISOYear]], [[Calendar]] »).
- // 6. Set object.[[ISOMonth]] to isoMonth.
- // 7. Set object.[[ISODay]] to isoDay.
- // 8. Set object.[[Calendar]] to calendar.
- // 9. Set object.[[ISOYear]] to referenceISOYear.
- auto* object = TRY(ordinary_create_from_constructor<PlainMonthDay>(global_object, *new_target, &GlobalObject::temporal_plain_month_day_prototype, iso_month, iso_day, reference_iso_year, calendar));
- // 10. Return object.
- return object;
- }
- // 10.5.3 TemporalMonthDayToString ( monthDay, showCalendar ), https://tc39.es/proposal-temporal/#sec-temporal-temporalmonthdaytostring
- ThrowCompletionOr<String> temporal_month_day_to_string(GlobalObject& global_object, PlainMonthDay& month_day, StringView show_calendar)
- {
- // 1. Assert: Type(monthDay) is Object.
- // 2. Assert: monthDay has an [[InitializedTemporalMonthDay]] internal slot.
- // 3. Let month be monthDay.[[ISOMonth]] formatted as a two-digit decimal number, padded to the left with a zero if necessary.
- // 4. Let day be monthDay.[[ISODay]] formatted as a two-digit decimal number, padded to the left with a zero if necessary.
- // 5. Let result be the string-concatenation of month, the code unit 0x002D (HYPHEN-MINUS), and day.
- auto result = String::formatted("{:02}-{:02}", month_day.iso_month(), month_day.iso_day());
- // 6. Let calendarID be ? ToString(monthDay.[[Calendar]]).
- auto calendar_id = TRY(Value(&month_day.calendar()).to_string(global_object));
- // 7. If showCalendar is "always" or if calendarID is not "iso8601", then
- if (show_calendar == "always"sv || calendar_id != "iso8601"sv) {
- // a. Let year be ! PadISOYear(monthDay.[[ISOYear]]).
- // b. Set result to the string-concatenation of year, the code unit 0x002D (HYPHEN-MINUS), and result.
- result = String::formatted("{}-{}", pad_iso_year(month_day.iso_year()), result);
- }
- // 8. Let calendarString be ! FormatCalendarAnnotation(calendarID, showCalendar).
- auto calendar_string = format_calendar_annotation(calendar_id, show_calendar);
- // 9. Set result to the string-concatenation of result and calendarString.
- // 10. Return result.
- return String::formatted("{}{}", result, calendar_string);
- }
- }
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