mirror of
https://github.com/RGBCube/serenity
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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.
54 lines
1.9 KiB
C++
54 lines
1.9 KiB
C++
/*
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* Copyright (c) 2021-2022, 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/GlobalObject.h>
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#include <LibJS/Runtime/WeakRef.h>
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#include <LibJS/Runtime/WeakRefConstructor.h>
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namespace JS {
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WeakRefConstructor::WeakRefConstructor(Realm& realm)
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: NativeFunction(vm().names.WeakRef.as_string(), *realm.global_object().function_prototype())
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{
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}
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void WeakRefConstructor::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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// 26.1.2.1 WeakRef.prototype, https://tc39.es/ecma262/#sec-weak-ref.prototype
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define_direct_property(vm.names.prototype, realm.global_object().weak_ref_prototype(), 0);
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define_direct_property(vm.names.length, Value(1), Attribute::Configurable);
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}
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// 26.1.1.1 WeakRef ( target ), https://tc39.es/ecma262/#sec-weak-ref-target
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ThrowCompletionOr<Value> WeakRefConstructor::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.WeakRef);
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}
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// 26.1.1.1 WeakRef ( target ), https://tc39.es/ecma262/#sec-weak-ref-target
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ThrowCompletionOr<Object*> WeakRefConstructor::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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auto target = vm.argument(0);
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if (!can_be_held_weakly(target))
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return vm.throw_completion<TypeError>(global_object, ErrorType::CannotBeHeldWeakly, target.to_string_without_side_effects());
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if (target.is_object())
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return TRY(ordinary_create_from_constructor<WeakRef>(global_object, new_target, &GlobalObject::weak_ref_prototype, target.as_object()));
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VERIFY(target.is_symbol());
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return TRY(ordinary_create_from_constructor<WeakRef>(global_object, new_target, &GlobalObject::weak_ref_prototype, target.as_symbol()));
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}
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}
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