cc00ccec41
This commit adds the PlainDate object itself, its constructor and prototype (currently empty), and several required abstract operations.
93 lines
3.3 KiB
C++
93 lines
3.3 KiB
C++
/*
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* Copyright (c) 2021, Idan Horowitz <idan.horowitz@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/PlainDate.h>
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#include <LibJS/Runtime/Temporal/PlainDateConstructor.h>
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#include <LibJS/Runtime/Temporal/PlainDateTime.h>
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namespace JS::Temporal {
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// 3 Temporal.PlainDate Objects, https://tc39.es/proposal-temporal/#sec-temporal-plaindate-objects
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PlainDate::PlainDate(i32 year, i32 month, i32 day, Object& calendar, Object& prototype)
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: Object(prototype)
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, m_iso_year(year)
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, m_iso_month(month)
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, m_iso_day(day)
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, m_calendar(calendar)
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{
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}
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void PlainDate::visit_edges(Visitor& visitor)
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{
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visitor.visit(&m_calendar);
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}
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// 3.5.1 CreateTemporalDate ( isoYear, isoMonth, isoDay, calendar [ , newTarget ] ), https://tc39.es/proposal-temporal/#sec-temporal-createtemporaldate
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PlainDate* create_temporal_date(GlobalObject& global_object, i32 iso_year, i32 iso_month, i32 iso_day, Object& calendar, FunctionObject* new_target)
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{
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auto& vm = global_object.vm();
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// 1. Assert: isoYear is an integer.
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// 2. Assert: isoMonth is an integer.
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// 3. Assert: isoDay is an integer.
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// 4. Assert: Type(calendar) is Object.
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// 5. If ! IsValidISODate(isoYear, isoMonth, isoDay) is false, throw a RangeError exception.
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if (!is_valid_iso_date(iso_year, iso_month, iso_day)) {
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vm.throw_exception<RangeError>(global_object, ErrorType::TemporalInvalidPlainDate);
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return {};
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}
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// 6. If ! ISODateTimeWithinLimits(isoYear, isoMonth, isoDay, 12, 0, 0, 0, 0, 0) is false, throw a RangeError exception.
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if (!iso_date_time_within_limits(global_object, iso_year, iso_month, iso_day, 12, 0, 0, 0, 0, 0)) {
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vm.throw_exception<RangeError>(global_object, ErrorType::TemporalInvalidPlainDate);
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return {};
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}
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// 7. If newTarget is not present, set it to %Temporal.PlainDate%.
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if (!new_target)
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new_target = global_object.temporal_plain_date_constructor();
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// 8. Let object be ? OrdinaryCreateFromConstructor(newTarget, "%Temporal.PlainDate.prototype%", « [[InitializedTemporalDate]], [[ISOYear]], [[ISOMonth]], [[ISODay]], [[Calendar]] »).
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// 9. Set object.[[ISOYear]] to isoYear.
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// 10. Set object.[[ISOMonth]] to isoMonth.
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// 11. Set object.[[ISODay]] to isoDay.
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// 12. Set object.[[Calendar]] to calendar.
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auto* object = ordinary_create_from_constructor<PlainDate>(global_object, *new_target, &GlobalObject::temporal_plain_date_prototype, iso_year, iso_month, iso_day, calendar);
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if (vm.exception())
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return {};
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return object;
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}
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// 3.5.5 IsValidISODate ( year, month, day ), https://tc39.es/proposal-temporal/#sec-temporal-isvalidisodate
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bool is_valid_iso_date(i32 year, i32 month, i32 day)
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{
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// 1. Assert: year, month, and day are integers.
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// 2. If month < 1 or month > 12, then
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if (month < 1 || month > 12) {
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// a. Return false.
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return false;
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}
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// 3. Let daysInMonth be ! ISODaysInMonth(year, month).
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auto days_in_month = iso_days_in_month(year, month);
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// 4. If day < 1 or day > daysInMonth, then
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if (day < 1 || day > days_in_month) {
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// a. Return false.
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return false;
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}
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// 5. Return true.
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return true;
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}
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}
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