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LibJS: Start implementing Temporal.PlainDate
This commit adds the PlainDate object itself, its constructor and prototype (currently empty), and several required abstract operations.
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19 changed files with 465 additions and 5 deletions
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/*
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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 <AK/Checked.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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namespace JS::Temporal {
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// 3.1 The Temporal.PlainDate Constructor, https://tc39.es/proposal-temporal/#sec-temporal-plaindate-constructor
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PlainDateConstructor::PlainDateConstructor(GlobalObject& global_object)
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: NativeFunction(vm().names.PlainDate.as_string(), *global_object.function_prototype())
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{
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}
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void PlainDateConstructor::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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// 3.2.1 Temporal.PlainDate.prototype, https://tc39.es/proposal-temporal/#sec-temporal-plaindate-prototype
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define_direct_property(vm.names.prototype, global_object.temporal_plain_date_prototype(), 0);
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define_direct_property(vm.names.length, Value(0), Attribute::Configurable);
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}
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// 3.1.1 Temporal.PlainDate ( isoYear, isoMonth, isoDay [ , calendarLike ] ), https://tc39.es/proposal-temporal/#sec-temporal.plaindate
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Value PlainDateConstructor::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.PlainDate");
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return {};
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}
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// 3.1.1 Temporal.PlainDate ( isoYear, isoMonth, isoDay [ , calendarLike ] ), https://tc39.es/proposal-temporal/#sec-temporal.plaindate
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Value PlainDateConstructor::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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// 2. Let y be ? ToIntegerOrInfinity(isoYear).
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auto y = vm.argument(0).to_integer_or_infinity(global_object);
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if (vm.exception())
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return {};
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// 3. 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::TemporalInvalidPlainDate);
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return {};
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}
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// 4. Let m be ? ToIntegerOrInfinity(isoMonth).
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auto m = vm.argument(1).to_integer_or_infinity(global_object);
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if (vm.exception())
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return {};
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// 5. 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::TemporalInvalidPlainDate);
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return {};
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}
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// 6. Let d be ? ToIntegerOrInfinity(isoDay).
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auto d = vm.argument(2).to_integer_or_infinity(global_object);
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if (vm.exception())
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return {};
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// 7. If d is +∞ or -∞, throw a RangeError exception.
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if (Value(d).is_infinity()) {
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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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// 8. Let calendar be ? ToTemporalCalendarWithISODefault(calendarLike).
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auto* calendar = to_temporal_calendar_with_iso_default(global_object, vm.argument(3));
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if (vm.exception())
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return {};
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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 CreateTemporalDate 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<i32>(m) || !AK::is_within_range<i32>(d)) {
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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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// 9. Return ? CreateTemporalDate(y, m, d, calendar, NewTarget).
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return create_temporal_date(global_object, y, m, d, *calendar, &new_target);
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}
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}
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