ladybird/Userland/Libraries/LibJS/Runtime/WeakRefConstructor.cpp

/*
 * Copyright (c) 2021, Idan Horowitz <idan.horowitz@serenityos.org>
 *
 * SPDX-License-Identifier: BSD-2-Clause
 */

#include <LibJS/Runtime/Error.h>
#include <LibJS/Runtime/GlobalObject.h>
#include <LibJS/Runtime/WeakRef.h>
#include <LibJS/Runtime/WeakRefConstructor.h>

namespace JS {

WeakRefConstructor::WeakRefConstructor(GlobalObject& global_object)
    : NativeFunction(vm().names.WeakRef, *global_object.function_prototype())
{
}

void WeakRefConstructor::initialize(GlobalObject& global_object)
{
    auto& vm = this->vm();
    NativeFunction::initialize(global_object);

    // 26.1.2.1 WeakRef.prototype, https://tc39.es/ecma262/#sec-weak-ref.prototype
    define_property(vm.names.prototype, global_object.weak_ref_prototype(), 0);

    define_property(vm.names.length, Value(1), Attribute::Configurable);
}

WeakRefConstructor::~WeakRefConstructor()
{
}

// 26.1.1.1 WeakRef ( target ), https://tc39.es/ecma262/#sec-weak-ref-target
Value WeakRefConstructor::call()
{
    auto& vm = this->vm();
    vm.throw_exception<TypeError>(global_object(), ErrorType::ConstructorWithoutNew, vm.names.WeakRef);
    return {};
}

// 26.1.1.1 WeakRef ( target ), https://tc39.es/ecma262/#sec-weak-ref-target
Value WeakRefConstructor::construct(Function&)
{
    auto& vm = this->vm();
    auto target = vm.argument(0);
    if (!target.is_object()) {
        vm.throw_exception<TypeError>(global_object(), ErrorType::NotAnObject, target.to_string_without_side_effects());
        return {};
    }

    // FIXME: Use OrdinaryCreateFromConstructor(newTarget, "%WeakRef.prototype%")
    return WeakRef::create(global_object(), &target.as_object());
}

}