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/*
* Copyright (c) 2021, Idan Horowitz <idan.horowitz@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <LibJS/Runtime/AbstractOperations.h>
#include <LibJS/Runtime/Error.h>
#include <LibJS/Runtime/GlobalObject.h>
#include <LibJS/Runtime/IteratorOperations.h>
#include <LibJS/Runtime/WeakSet.h>
#include <LibJS/Runtime/WeakSetConstructor.h>
namespace JS {
WeakSetConstructor::WeakSetConstructor(GlobalObject& global_object)
: NativeFunction(vm().names.WeakSet.as_string(), *global_object.function_prototype())
{
}
void WeakSetConstructor::initialize(GlobalObject& global_object)
{
auto& vm = this->vm();
NativeFunction::initialize(global_object);
// 24.4.2.1 WeakSet.prototype, https://tc39.es/ecma262/#sec-weakset.prototype
define_direct_property(vm.names.prototype, global_object.weak_set_prototype(), 0);
define_direct_property(vm.names.length, Value(0), Attribute::Configurable);
}
WeakSetConstructor::~WeakSetConstructor()
{
}
// 24.4.1.1 WeakSet ( [ iterable ] ), https://tc39.es/ecma262/#sec-weakset-iterable
Value WeakSetConstructor::call()
{
auto& vm = this->vm();
vm.throw_exception<TypeError>(global_object(), ErrorType::ConstructorWithoutNew, vm.names.WeakSet);
return {};
}
// 24.4.1.1 WeakSet ( [ iterable ] ), https://tc39.es/ecma262/#sec-weakset-iterable
Value WeakSetConstructor::construct(FunctionObject& new_target)
{
auto& vm = this->vm();
auto& global_object = this->global_object();
auto* weak_set = TRY_OR_DISCARD(ordinary_create_from_constructor<WeakSet>(global_object, new_target, &GlobalObject::weak_set_prototype));
if (vm.argument(0).is_nullish())
return weak_set;
auto adder = TRY_OR_DISCARD(weak_set->get(vm.names.add));
if (!adder.is_function()) {
vm.throw_exception<TypeError>(global_object, ErrorType::NotAFunction, "'add' property of WeakSet");
return {};
}
get_iterator_values(global_object, vm.argument(0), [&](Value iterator_value) {
if (vm.exception())
return IterationDecision::Break;
auto result = vm.call(adder.as_function(), Value(weak_set), iterator_value);
return result.is_error() ? IterationDecision::Break : IterationDecision::Continue;
});
if (vm.exception())
return {};
return weak_set;
}
}
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