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b84f8fb55b
Some of these are allocated upon initialization of the intrinsics, and some lazily, but in neither case the getters actually return a nullptr. This saves us a whole bunch of pointer dereferences (as NonnullGCPtr has an `operator T&()`), and also has the interesting side effect of forcing us to explicitly use the FunctionObject& overload of call(), as passing a NonnullGCPtr is ambigous - it could implicitly be turned into a Value _or_ a FunctionObject& (so we have to dereference manually).
73 lines
2.5 KiB
C++
73 lines
2.5 KiB
C++
/*
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* Copyright (c) 2021-2023, 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/CalendarConstructor.h>
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namespace JS::Temporal {
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// 12.2 The Temporal.Calendar Constructor, https://tc39.es/proposal-temporal/#sec-temporal-calendar-constructor
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CalendarConstructor::CalendarConstructor(Realm& realm)
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: NativeFunction(realm.vm().names.Calendar.as_string(), realm.intrinsics().function_prototype())
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{
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}
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ThrowCompletionOr<void> CalendarConstructor::initialize(Realm& realm)
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{
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MUST_OR_THROW_OOM(NativeFunction::initialize(realm));
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auto& vm = this->vm();
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// 12.3.1 Temporal.Calendar.prototype, https://tc39.es/proposal-temporal/#sec-temporal.calendar.prototype
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define_direct_property(vm.names.prototype, realm.intrinsics().temporal_calendar_prototype(), 0);
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u8 attr = Attribute::Writable | Attribute::Configurable;
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define_native_function(realm, vm.names.from, from, 1, attr);
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define_direct_property(vm.names.length, Value(1), Attribute::Configurable);
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return {};
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}
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// 12.2.1 Temporal.Calendar ( id ), https://tc39.es/proposal-temporal/#sec-temporal.calendar
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ThrowCompletionOr<Value> CalendarConstructor::call()
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{
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auto& vm = this->vm();
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// 1. If NewTarget is undefined, then
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// a. Throw a TypeError exception.
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return vm.throw_completion<TypeError>(ErrorType::ConstructorWithoutNew, "Temporal.Calendar");
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}
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// 12.2.1 Temporal.Calendar ( id ), https://tc39.es/proposal-temporal/#sec-temporal.calendar
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ThrowCompletionOr<NonnullGCPtr<Object>> CalendarConstructor::construct(FunctionObject& new_target)
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{
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auto& vm = this->vm();
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// 2. Set id to ? ToString(id).
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auto identifier = TRY(vm.argument(0).to_string(vm));
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// 3. If IsBuiltinCalendar(id) is false, then
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if (!is_builtin_calendar(identifier)) {
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// a. Throw a RangeError exception.
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return vm.throw_completion<RangeError>(ErrorType::TemporalInvalidCalendarIdentifier, identifier);
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}
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// 4. Return ? CreateTemporalCalendar(id, NewTarget).
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return *TRY(create_temporal_calendar(vm, identifier, &new_target));
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}
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// 12.3.2 Temporal.Calendar.from ( calendarLike ), https://tc39.es/proposal-temporal/#sec-temporal.calendar.from
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JS_DEFINE_NATIVE_FUNCTION(CalendarConstructor::from)
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{
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auto calendar_like = vm.argument(0);
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// 1. Return ? ToTemporalCalendar(calendarLike).
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return TRY(to_temporal_calendar(vm, calendar_like));
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}
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}
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