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d00b79568f
https://isocpp.github.io/CppCoreGuidelines/CppCoreGuidelines#cother-other-default-operation-rules "The compiler is more likely to get the default semantics right and you cannot implement these functions better than the compiler."
62 lines
2.1 KiB
C++
62 lines
2.1 KiB
C++
/*
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* Copyright (c) 2021, 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/IteratorOperations.h>
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#include <LibJS/Runtime/WeakSet.h>
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#include <LibJS/Runtime/WeakSetConstructor.h>
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namespace JS {
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WeakSetConstructor::WeakSetConstructor(GlobalObject& global_object)
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: NativeFunction(vm().names.WeakSet.as_string(), *global_object.function_prototype())
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{
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}
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void WeakSetConstructor::initialize(GlobalObject& global_object)
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{
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auto& vm = this->vm();
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NativeFunction::initialize(global_object);
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// 24.4.2.1 WeakSet.prototype, https://tc39.es/ecma262/#sec-weakset.prototype
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define_direct_property(vm.names.prototype, global_object.weak_set_prototype(), 0);
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define_direct_property(vm.names.length, Value(0), Attribute::Configurable);
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}
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// 24.4.1.1 WeakSet ( [ iterable ] ), https://tc39.es/ecma262/#sec-weakset-iterable
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ThrowCompletionOr<Value> WeakSetConstructor::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.WeakSet);
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}
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// 24.4.1.1 WeakSet ( [ iterable ] ), https://tc39.es/ecma262/#sec-weakset-iterable
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ThrowCompletionOr<Object*> WeakSetConstructor::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* weak_set = TRY(ordinary_create_from_constructor<WeakSet>(global_object, new_target, &GlobalObject::weak_set_prototype));
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if (vm.argument(0).is_nullish())
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return weak_set;
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auto adder = TRY(weak_set->get(vm.names.add));
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if (!adder.is_function())
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return vm.throw_completion<TypeError>(global_object, ErrorType::NotAFunction, "'add' property of WeakSet");
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(void)TRY(get_iterator_values(global_object, vm.argument(0), [&](Value iterator_value) -> Optional<Completion> {
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TRY(JS::call(global_object, adder.as_function(), weak_set, iterator_value));
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return {};
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}));
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return weak_set;
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}
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}
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