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/*
* Copyright (c) 2021, 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/FinalizationRegistry.h>
#include <LibJS/Runtime/FinalizationRegistryConstructor.h>
#include <LibJS/Runtime/GlobalObject.h>
#include <LibJS/Runtime/JobCallback.h>
namespace JS {
FinalizationRegistryConstructor::FinalizationRegistryConstructor(Realm& realm)
: NativeFunction(realm.vm().names.FinalizationRegistry.as_string(), *realm.intrinsics().function_prototype())
{
}
ThrowCompletionOr<void> FinalizationRegistryConstructor::initialize(Realm& realm)
{
auto& vm = this->vm();
MUST_OR_THROW_OOM(NativeFunction::initialize(realm));
// 26.2.2.1 FinalizationRegistry.prototype, https://tc39.es/ecma262/#sec-finalization-registry.prototype
define_direct_property(vm.names.prototype, realm.intrinsics().finalization_registry_prototype(), 0);
define_direct_property(vm.names.length, Value(1), Attribute::Configurable);
return {};
}
// 26.2.1.1 FinalizationRegistry ( cleanupCallback ), https://tc39.es/ecma262/#sec-finalization-registry-cleanup-callback
ThrowCompletionOr<Value> FinalizationRegistryConstructor::call()
{
auto& vm = this->vm();
// 1. If NewTarget is undefined, throw a TypeError exception.
return vm.throw_completion<TypeError>(ErrorType::ConstructorWithoutNew, vm.names.FinalizationRegistry);
}
// 26.2.1.1 FinalizationRegistry ( cleanupCallback ), https://tc39.es/ecma262/#sec-finalization-registry-cleanup-callback
ThrowCompletionOr<NonnullGCPtr<Object>> FinalizationRegistryConstructor::construct(FunctionObject& new_target)
{
auto& vm = this->vm();
// 2. If IsCallable(cleanupCallback) is false, throw a TypeError exception.
auto cleanup_callback = vm.argument(0);
if (!cleanup_callback.is_function())
return vm.throw_completion<TypeError>(ErrorType::NotAFunction, TRY_OR_THROW_OOM(vm, cleanup_callback.to_string_without_side_effects()));
// 3. Let finalizationRegistry be ? OrdinaryCreateFromConstructor(NewTarget, "%FinalizationRegistry.prototype%", « [[Realm]], [[CleanupCallback]], [[Cells]] »).
// 4. Let fn be the active function object.
// NOTE: This is not necessary, the active function object is `this`.
// 5. Set finalizationRegistry.[[Realm]] to fn.[[Realm]].
// 6. Set finalizationRegistry.[[CleanupCallback]] to HostMakeJobCallback(cleanupCallback).
// 7. Set finalizationRegistry.[[Cells]] to a new empty List.
// NOTE: This is done inside FinalizationRegistry instead of here.
// 8. Return finalizationRegistry.
return TRY(ordinary_create_from_constructor<FinalizationRegistry>(vm, new_target, &Intrinsics::finalization_registry_prototype, *realm(), vm.host_make_job_callback(cleanup_callback.as_function())));
}
}
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