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/*
* Copyright (c) 2021-2022, Idan Horowitz <idan.horowitz@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <LibJS/Runtime/AbstractOperations.h>
#include <LibJS/Runtime/Error.h>
#include <LibJS/Runtime/GlobalObject.h>
#include <LibJS/Runtime/WeakRef.h>
#include <LibJS/Runtime/WeakRefConstructor.h>
namespace JS {
WeakRefConstructor::WeakRefConstructor(Realm& realm)
: NativeFunction(realm.vm().names.WeakRef.as_string(), realm.intrinsics().function_prototype())
{
}
ThrowCompletionOr<void> WeakRefConstructor::initialize(Realm& realm)
{
auto& vm = this->vm();
MUST_OR_THROW_OOM(NativeFunction::initialize(realm));
// 26.1.2.1 WeakRef.prototype, https://tc39.es/ecma262/#sec-weak-ref.prototype
define_direct_property(vm.names.prototype, realm.intrinsics().weak_ref_prototype(), 0);
define_direct_property(vm.names.length, Value(1), Attribute::Configurable);
return {};
}
// 26.1.1.1 WeakRef ( target ), https://tc39.es/ecma262/#sec-weak-ref-target
ThrowCompletionOr<Value> WeakRefConstructor::call()
{
auto& vm = this->vm();
// 1. If NewTarget is undefined, throw a TypeError exception.
return vm.throw_completion<TypeError>(ErrorType::ConstructorWithoutNew, vm.names.WeakRef);
}
// 26.1.1.1 WeakRef ( target ), https://tc39.es/ecma262/#sec-weak-ref-target
ThrowCompletionOr<NonnullGCPtr<Object>> WeakRefConstructor::construct(FunctionObject& new_target)
{
auto& vm = this->vm();
auto target = vm.argument(0);
// 2. If CanBeHeldWeakly(target) is false, throw a TypeError exception.
if (!can_be_held_weakly(target))
return vm.throw_completion<TypeError>(ErrorType::CannotBeHeldWeakly, TRY_OR_THROW_OOM(vm, target.to_string_without_side_effects()));
// 3. Let weakRef be ? OrdinaryCreateFromConstructor(NewTarget, "%WeakRef.prototype%", « [[WeakRefTarget]] »).
// 4. Perform AddToKeptObjects(target).
// 5. Set weakRef.[[WeakRefTarget]] to target.
// 6. Return weakRef.
if (target.is_object())
return TRY(ordinary_create_from_constructor<WeakRef>(vm, new_target, &Intrinsics::weak_ref_prototype, target.as_object()));
VERIFY(target.is_symbol());
return TRY(ordinary_create_from_constructor<WeakRef>(vm, new_target, &Intrinsics::weak_ref_prototype, target.as_symbol()));
}
}
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