24d772af7c
Having all spec comments verbatim on their own line with no additions made by us will make it easier to automate comparing said comments to their current spec counterparts.
63 lines
2.9 KiB
C++
63 lines
2.9 KiB
C++
/*
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* Copyright (c) 2021, Idan Horowitz <idan.horowitz@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/AbstractOperations.h>
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#include <LibJS/Runtime/Error.h>
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#include <LibJS/Runtime/FinalizationRegistry.h>
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#include <LibJS/Runtime/FinalizationRegistryConstructor.h>
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#include <LibJS/Runtime/GlobalObject.h>
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#include <LibJS/Runtime/JobCallback.h>
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namespace JS {
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FinalizationRegistryConstructor::FinalizationRegistryConstructor(GlobalObject& global_object)
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: NativeFunction(vm().names.FinalizationRegistry.as_string(), *global_object.function_prototype())
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{
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}
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void FinalizationRegistryConstructor::initialize(GlobalObject& global_object)
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{
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auto& vm = this->vm();
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NativeFunction::initialize(global_object);
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// 26.2.2.1 FinalizationRegistry.prototype, https://tc39.es/ecma262/#sec-finalization-registry.prototype
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define_direct_property(vm.names.prototype, global_object.finalization_registry_prototype(), 0);
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define_direct_property(vm.names.length, Value(1), Attribute::Configurable);
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}
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// 26.2.1.1 FinalizationRegistry ( cleanupCallback ), https://tc39.es/ecma262/#sec-finalization-registry-cleanup-callback
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ThrowCompletionOr<Value> FinalizationRegistryConstructor::call()
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{
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auto& vm = this->vm();
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return vm.throw_completion<TypeError>(global_object(), ErrorType::ConstructorWithoutNew, vm.names.FinalizationRegistry);
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}
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// 26.2.1.1 FinalizationRegistry ( cleanupCallback ), https://tc39.es/ecma262/#sec-finalization-registry-cleanup-callback
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ThrowCompletionOr<Object*> FinalizationRegistryConstructor::construct(FunctionObject& new_target)
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{
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auto& vm = this->vm();
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auto& global_object = this->global_object();
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// NOTE: Step 1 is implemented in FinalizationRegistryConstructor::call()
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// 2. If IsCallable(cleanupCallback) is false, throw a TypeError exception.
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auto cleanup_callback = vm.argument(0);
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if (!cleanup_callback.is_function())
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return vm.throw_completion<TypeError>(global_object, ErrorType::NotAFunction, cleanup_callback.to_string_without_side_effects());
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// 3. Let finalizationRegistry be ? OrdinaryCreateFromConstructor(NewTarget, "%FinalizationRegistry.prototype%", « [[Realm]], [[CleanupCallback]], [[Cells]] »).
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// 4. Let fn be the active function object.
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// NOTE: This is not necessary, the active function object is `this`.
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// 5. Set finalizationRegistry.[[Realm]] to fn.[[Realm]].
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// 6. Set finalizationRegistry.[[CleanupCallback]] to HostMakeJobCallback(cleanupCallback).
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// 7. Set finalizationRegistry.[[Cells]] to a new empty List.
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// NOTE: This is done inside FinalizationRegistry instead of here.
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// 8. Return finalizationRegistry.
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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())));
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}
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}
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