fafc9b07c4
This is an editorial change in the Temporal spec. See: https://github.com/tc39/proposal-temporal/commit/536f067
110 lines
5.2 KiB
C++
110 lines
5.2 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 <AK/Checked.h>
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#include <AK/TypeCasts.h>
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#include <LibJS/Runtime/GlobalObject.h>
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#include <LibJS/Runtime/Temporal/AbstractOperations.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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u8 attr = Attribute::Writable | Attribute::Configurable;
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define_native_function(vm.names.from, from, 1, attr);
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define_native_function(vm.names.compare, compare, 2, attr);
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define_direct_property(vm.names.length, Value(3), 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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ThrowCompletionOr<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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return vm.throw_completion<TypeError>(global_object(), ErrorType::ConstructorWithoutNew, "Temporal.PlainDate");
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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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ThrowCompletionOr<Object*> 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 ? ToIntegerThrowOnInfinity(isoYear).
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auto y = TRY(to_integer_throw_on_infinity(global_object, vm.argument(0), ErrorType::TemporalInvalidPlainDate));
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// 3. Let m be ? ToIntegerThrowOnInfinity(isoMonth).
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auto m = TRY(to_integer_throw_on_infinity(global_object, vm.argument(1), ErrorType::TemporalInvalidPlainDate));
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// 4. Let d be ? ToIntegerThrowOnInfinity(isoDay).
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auto d = TRY(to_integer_throw_on_infinity(global_object, vm.argument(2), ErrorType::TemporalInvalidPlainDate));
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// 5. Let calendar be ? ToTemporalCalendarWithISODefault(calendarLike).
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auto* calendar = TRY(to_temporal_calendar_with_iso_default(global_object, vm.argument(3)));
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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 behavior 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<u8>(m) || !AK::is_within_range<u8>(d))
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return vm.throw_completion<RangeError>(global_object, ErrorType::TemporalInvalidPlainDate);
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// 6. Return ? CreateTemporalDate(y, m, d, calendar, NewTarget).
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return TRY(create_temporal_date(global_object, y, m, d, *calendar, &new_target));
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}
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// 3.2.2 Temporal.PlainDate.from ( item [ , options ] ), https://tc39.es/proposal-temporal/#sec-temporal.plaindate.from
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JS_DEFINE_NATIVE_FUNCTION(PlainDateConstructor::from)
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{
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// 1. Set options to ? GetOptionsObject(options).
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auto const* options = TRY(get_options_object(global_object, vm.argument(1)));
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auto item = vm.argument(0);
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// 2. If Type(item) is Object and item has an [[InitializedTemporalDate]] internal slot, then
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if (item.is_object() && is<PlainDate>(item.as_object())) {
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auto& plain_date_item = static_cast<PlainDate&>(item.as_object());
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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. Return ! CreateTemporalDate(item.[[ISOYear]], item.[[ISOMonth]], item.[[ISODay]], item.[[Calendar]]).
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return MUST(create_temporal_date(global_object, plain_date_item.iso_year(), plain_date_item.iso_month(), plain_date_item.iso_day(), plain_date_item.calendar()));
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}
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// 3. Return ? ToTemporalDate(item, options).
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return TRY(to_temporal_date(global_object, item, options));
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}
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// 3.2.3 Temporal.PlainDate.compare ( one, two ), https://tc39.es/proposal-temporal/#sec-temporal.plaindate.compare
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JS_DEFINE_NATIVE_FUNCTION(PlainDateConstructor::compare)
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{
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// 1. Set one to ? ToTemporalDate(one).
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auto* one = TRY(to_temporal_date(global_object, vm.argument(0)));
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// 2. Set two to ? ToTemporalDate(two).
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auto* two = TRY(to_temporal_date(global_object, vm.argument(1)));
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// 3. Return 𝔽(! CompareISODate(one.[[ISOYear]], one.[[ISOMonth]], one.[[ISODay]], two.[[ISOYear]], two.[[ISOMonth]], two.[[ISODay]])).
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return Value(compare_iso_date(one->iso_year(), one->iso_month(), one->iso_day(), two->iso_year(), two->iso_month(), two->iso_day()));
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}
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}
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