5dd5896588
This is a continuation of the previous commit. Calling initialize() is the first thing that's done after allocating a cell on the JS heap - and in the common case of allocating an object, that's where properties are assigned and intrinsics occasionally accessed. Since those are supposed to live on the realm eventually, this is another step into that direction.
63 lines
2.8 KiB
C++
63 lines
2.8 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(Realm& realm)
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: NativeFunction(vm().names.FinalizationRegistry.as_string(), *realm.global_object().function_prototype())
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{
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}
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void FinalizationRegistryConstructor::initialize(Realm& realm)
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{
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auto& vm = this->vm();
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NativeFunction::initialize(realm);
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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, realm.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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