jcs.org
Serenity Operating System
1/*
2 * Copyright (c) 2021, Idan Horowitz <idan.horowitz@serenityos.org>
3 *
4 * SPDX-License-Identifier: BSD-2-Clause
5 */
6
7#include <LibJS/Runtime/AbstractOperations.h>
8#include <LibJS/Runtime/Error.h>
9#include <LibJS/Runtime/GlobalObject.h>
10#include <LibJS/Runtime/IteratorOperations.h>
11#include <LibJS/Runtime/WeakSet.h>
12#include <LibJS/Runtime/WeakSetConstructor.h>
13
14namespace JS {
15
16WeakSetConstructor::WeakSetConstructor(Realm& realm)
17 : NativeFunction(realm.vm().names.WeakSet.as_string(), *realm.intrinsics().function_prototype())
18{
19}
20
21ThrowCompletionOr<void> WeakSetConstructor::initialize(Realm& realm)
22{
23 auto& vm = this->vm();
24 MUST_OR_THROW_OOM(NativeFunction::initialize(realm));
25
26 // 24.4.2.1 WeakSet.prototype, https://tc39.es/ecma262/#sec-weakset.prototype
27 define_direct_property(vm.names.prototype, realm.intrinsics().weak_set_prototype(), 0);
28
29 define_direct_property(vm.names.length, Value(0), Attribute::Configurable);
30
31 return {};
32}
33
34// 24.4.1.1 WeakSet ( [ iterable ] ), https://tc39.es/ecma262/#sec-weakset-iterable
35ThrowCompletionOr<Value> WeakSetConstructor::call()
36{
37 auto& vm = this->vm();
38 return vm.throw_completion<TypeError>(ErrorType::ConstructorWithoutNew, vm.names.WeakSet);
39}
40
41// 24.4.1.1 WeakSet ( [ iterable ] ), https://tc39.es/ecma262/#sec-weakset-iterable
42ThrowCompletionOr<NonnullGCPtr<Object>> WeakSetConstructor::construct(FunctionObject& new_target)
43{
44 auto& vm = this->vm();
45
46 auto weak_set = TRY(ordinary_create_from_constructor<WeakSet>(vm, new_target, &Intrinsics::weak_set_prototype));
47
48 if (vm.argument(0).is_nullish())
49 return weak_set;
50
51 auto adder = TRY(weak_set->get(vm.names.add));
52 if (!adder.is_function())
53 return vm.throw_completion<TypeError>(ErrorType::NotAFunction, "'add' property of WeakSet");
54
55 (void)TRY(get_iterator_values(vm, vm.argument(0), [&](Value iterator_value) -> Optional<Completion> {
56 TRY(JS::call(vm, adder.as_function(), weak_set, iterator_value));
57 return {};
58 }));
59
60 return weak_set;
61}
62
63}