d00b79568f
https://isocpp.github.io/CppCoreGuidelines/CppCoreGuidelines#cother-other-default-operation-rules "The compiler is more likely to get the default semantics right and you cannot implement these functions better than the compiler."
61 lines
2.8 KiB
C++
61 lines
2.8 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>
|
|
#include <LibJS/Runtime/JobCallback.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);
|
|
}
|
|
|
|
// 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();
|
|
|
|
// NOTE: Step 1 is implemented in FinalizationRegistryConstructor::call()
|
|
|
|
// 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>(global_object, ErrorType::NotAFunction, 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: 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>(global_object, new_target, &GlobalObject::finalization_registry_prototype, *realm(), vm.host_make_job_callback(cleanup_callback.as_function())));
|
|
}
|
|
|
|
}
|