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https://github.com/LadybirdBrowser/ladybird.git
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0a8edd5ce7
This commit adds the PlainYearMonth object itself, its constructor and prototype (currently empty), and the CreateTemporalYearMonth and ISOYearMonthWithinLimits abstract operations.
109 lines
4.2 KiB
C++
109 lines
4.2 KiB
C++
/*
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* Copyright (c) 2021, Linus Groh <linusg@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/GlobalObject.h>
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#include <LibJS/Runtime/Temporal/Calendar.h>
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#include <LibJS/Runtime/Temporal/PlainYearMonth.h>
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#include <LibJS/Runtime/Temporal/PlainYearMonthConstructor.h>
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namespace JS::Temporal {
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// 9.1 The Temporal.PlainYearMonth Constructor, https://tc39.es/proposal-temporal/#sec-temporal-plainyearmonth-constructor
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PlainYearMonthConstructor::PlainYearMonthConstructor(GlobalObject& global_object)
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: NativeFunction(vm().names.PlainYearMonth.as_string(), *global_object.function_prototype())
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{
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}
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void PlainYearMonthConstructor::initialize(GlobalObject& global_object)
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{
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NativeFunction::initialize(global_object);
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auto& vm = this->vm();
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// 9.2.1 Temporal.PlainYearMonth.prototype, https://tc39.es/proposal-temporal/#sec-temporal-plainyearmonth-prototype
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define_direct_property(vm.names.prototype, global_object.temporal_plain_year_month_prototype(), 0);
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define_direct_property(vm.names.length, Value(2), Attribute::Configurable);
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}
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// 9.1.1 Temporal.PlainYearMonth ( isoYear, isoMonth [ , calendarLike [ , referenceISODay ] ] ), https://tc39.es/proposal-temporal/#sec-temporal.plainyearmonth
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Value PlainYearMonthConstructor::call()
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{
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auto& vm = this->vm();
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// 1. If NewTarget is undefined, throw a TypeError exception.
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vm.throw_exception<TypeError>(global_object(), ErrorType::ConstructorWithoutNew, "Temporal.PlainYearMonth");
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return {};
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}
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// 9.1.1 Temporal.PlainYearMonth ( isoYear, isoMonth [ , calendarLike [ , referenceISODay ] ] ), https://tc39.es/proposal-temporal/#sec-temporal.plainyearmonth
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Value PlainYearMonthConstructor::construct(FunctionObject& new_target)
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{
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auto& vm = this->vm();
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auto& global_object = this->global_object();
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auto iso_year = vm.argument(0);
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auto iso_month = vm.argument(1);
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auto calendar_like = vm.argument(2);
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auto reference_iso_day = vm.argument(3);
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// 2. If referenceISODay is undefined, then
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if (reference_iso_day.is_undefined()) {
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// a. Set referenceISODay to 1𝔽.
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reference_iso_day = Value(1);
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}
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// 3. Let y be ? ToIntegerOrInfinity(isoYear).
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auto y = iso_year.to_integer_or_infinity(global_object);
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if (vm.exception())
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return {};
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// 4. If y is +∞ or -∞, throw a RangeError exception.
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if (Value(y).is_infinity()) {
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vm.throw_exception<RangeError>(global_object, ErrorType::TemporalInvalidPlainYearMonth);
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return {};
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}
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// 5. Let m be ? ToIntegerOrInfinity(isoMonth).
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auto m = iso_month.to_integer_or_infinity(global_object);
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if (vm.exception())
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return {};
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// 6. If m is +∞ or -∞, throw a RangeError exception.
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if (Value(m).is_infinity()) {
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vm.throw_exception<RangeError>(global_object, ErrorType::TemporalInvalidPlainYearMonth);
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return {};
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}
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// 7. Let calendar be ? ToTemporalCalendarWithISODefault(calendarLike).
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auto* calendar = to_temporal_calendar_with_iso_default(global_object, calendar_like);
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if (vm.exception())
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return {};
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// 8. Let ref be ? ToIntegerOrInfinity(referenceISODay).
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auto ref = reference_iso_day.to_integer_or_infinity(global_object);
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if (vm.exception())
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return {};
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// 9. If ref is +∞ or -∞, throw a RangeError exception.
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if (Value(ref).is_infinity()) {
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vm.throw_exception<RangeError>(global_object, ErrorType::TemporalInvalidPlainYearMonth);
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return {};
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}
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// IMPLEMENTATION DEFINED: This is an optimization that allows us to treat these doubles as normal integers from this point onwards.
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// This does not change the exposed behaviour as the call to CreateTemporalYearMonth will immediately check that these values are valid
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// ISO values (for years: -273975 - 273975, for months: 1 - 12, for days: 1 - 31) all of which are subsets of this check.
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if (!AK::is_within_range<i32>(y) || !AK::is_within_range<u8>(m) || !AK::is_within_range<u8>(ref)) {
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vm.throw_exception<RangeError>(global_object, ErrorType::TemporalInvalidPlainYearMonth);
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return {};
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}
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// 10. Return ? CreateTemporalYearMonth(y, m, calendar, ref, NewTarget).
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return create_temporal_year_month(global_object, y, m, *calendar, ref, &new_target);
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}
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}
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