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https://github.com/RGBCube/serenity
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85e313077a
In a subclass of Cell, we cannot use Cell::vm() before the base Cell object itself is constructed. Use the Realm's VM instead. This was caught by UBSAN with vptr sanitation enabled.
53 lines
1.8 KiB
C++
53 lines
1.8 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(realm.vm().names.WeakRef.as_string(), *realm.intrinsics().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.intrinsics().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>(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 target = vm.argument(0);
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if (!can_be_held_weakly(target))
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return vm.throw_completion<TypeError>(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>(vm, new_target, &Intrinsics::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>(vm, new_target, &Intrinsics::weak_ref_prototype, target.as_symbol()));
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}
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}
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