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/Set.h>
12#include <LibJS/Runtime/SetConstructor.h>
13
14namespace JS {
15
16SetConstructor::SetConstructor(Realm& realm)
17 : NativeFunction(realm.vm().names.Set.as_string(), *realm.intrinsics().function_prototype())
18{
19}
20
21ThrowCompletionOr<void> SetConstructor::initialize(Realm& realm)
22{
23 auto& vm = this->vm();
24 MUST_OR_THROW_OOM(NativeFunction::initialize(realm));
25
26 // 24.2.2.1 Set.prototype, https://tc39.es/ecma262/#sec-set.prototype
27 define_direct_property(vm.names.prototype, realm.intrinsics().set_prototype(), 0);
28
29 define_native_accessor(realm, *vm.well_known_symbol_species(), symbol_species_getter, {}, Attribute::Configurable);
30
31 define_direct_property(vm.names.length, Value(0), Attribute::Configurable);
32
33 return {};
34}
35
36// 24.2.1.1 Set ( [ iterable ] ), https://tc39.es/ecma262/#sec-set-iterable
37ThrowCompletionOr<Value> SetConstructor::call()
38{
39 auto& vm = this->vm();
40 return vm.throw_completion<TypeError>(ErrorType::ConstructorWithoutNew, vm.names.Set);
41}
42
43// 24.2.1.1 Set ( [ iterable ] ), https://tc39.es/ecma262/#sec-set-iterable
44ThrowCompletionOr<NonnullGCPtr<Object>> SetConstructor::construct(FunctionObject& new_target)
45{
46 auto& vm = this->vm();
47
48 auto set = TRY(ordinary_create_from_constructor<Set>(vm, new_target, &Intrinsics::set_prototype));
49
50 if (vm.argument(0).is_nullish())
51 return set;
52
53 auto adder = TRY(set->get(vm.names.add));
54 if (!adder.is_function())
55 return vm.throw_completion<TypeError>(ErrorType::NotAFunction, "'add' property of Set");
56
57 (void)TRY(get_iterator_values(vm, vm.argument(0), [&](Value iterator_value) -> Optional<Completion> {
58 TRY(JS::call(vm, adder.as_function(), set, iterator_value));
59 return {};
60 }));
61
62 return set;
63}
64
65// 24.2.2.2 get Set [ @@species ], https://tc39.es/ecma262/#sec-get-set-@@species
66JS_DEFINE_NATIVE_FUNCTION(SetConstructor::symbol_species_getter)
67{
68 return vm.this_value();
69}
70
71}