ladybird/Userland/Libraries/LibJS/Runtime/FinalizationRegistryConstructor.cpp
Linus Groh 5832de62fe LibJS: Convert NativeFunction::{call,construct}() to ThrowCompletionOr
Both at the same time because many of them call construct() in call()
and I'm not keen on adding a bunch of temporary plumbing to turn
exceptions into throw completions.
Also changes the return value of construct() to Object* instead of Value
as it always needs to return an object; allowing an arbitrary Value is a
massive foot gun.
2021-10-21 09:02:23 +01:00

55 lines
2.1 KiB
C++

/*
* 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>
namespace JS {
FinalizationRegistryConstructor::FinalizationRegistryConstructor(GlobalObject& global_object)
: NativeFunction(vm().names.FinalizationRegistry.as_string(), *global_object.function_prototype())
{
}
void FinalizationRegistryConstructor::initialize(GlobalObject& global_object)
{
auto& vm = this->vm();
NativeFunction::initialize(global_object);
// 26.2.2.1 FinalizationRegistry.prototype, https://tc39.es/ecma262/#sec-finalization-registry.prototype
define_direct_property(vm.names.prototype, global_object.finalization_registry_prototype(), 0);
define_direct_property(vm.names.length, Value(1), Attribute::Configurable);
}
FinalizationRegistryConstructor::~FinalizationRegistryConstructor()
{
}
// 26.2.1.1 FinalizationRegistry ( cleanupCallback ), https://tc39.es/ecma262/#sec-finalization-registry-cleanup-callback
ThrowCompletionOr<Value> FinalizationRegistryConstructor::call()
{
auto& vm = this->vm();
return vm.throw_completion<TypeError>(global_object(), ErrorType::ConstructorWithoutNew, vm.names.FinalizationRegistry);
}
// 26.2.1.1 FinalizationRegistry ( cleanupCallback ), https://tc39.es/ecma262/#sec-finalization-registry-cleanup-callback
ThrowCompletionOr<Object*> FinalizationRegistryConstructor::construct(FunctionObject& new_target)
{
auto& vm = this->vm();
auto& global_object = this->global_object();
auto cleanup_callback = vm.argument(0);
if (!cleanup_callback.is_function())
return vm.throw_completion<TypeError>(global_object, ErrorType::NotAFunction, cleanup_callback.to_string_without_side_effects());
return TRY(ordinary_create_from_constructor<FinalizationRegistry>(global_object, new_target, &GlobalObject::finalization_registry_prototype, cleanup_callback.as_function()));
}
}