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75 lines
2.4 KiB
C++
75 lines
2.4 KiB
C++
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/*
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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/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/WeakMap.h>
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#include <LibJS/Runtime/WeakMapConstructor.h>
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namespace JS {
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WeakMapConstructor::WeakMapConstructor(GlobalObject& global_object)
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: NativeFunction(vm().names.WeakMap, *global_object.function_prototype())
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{
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}
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void WeakMapConstructor::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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define_property(vm.names.prototype, global_object.weak_map_prototype(), 0);
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define_property(vm.names.length, Value(0), Attribute::Configurable);
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}
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WeakMapConstructor::~WeakMapConstructor()
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{
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}
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Value WeakMapConstructor::call()
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{
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auto& vm = this->vm();
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vm.throw_exception<TypeError>(global_object(), ErrorType::ConstructorWithoutNew, vm.names.WeakMap);
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return {};
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}
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Value WeakMapConstructor::construct(Function&)
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{
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auto& vm = this->vm();
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if (vm.argument(0).is_nullish())
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return WeakMap::create(global_object());
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auto* weak_map = WeakMap::create(global_object());
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auto adder = weak_map->get(vm.names.set);
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if (vm.exception())
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return {};
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if (!adder.is_function()) {
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vm.throw_exception<TypeError>(global_object(), ErrorType::NotAFunction, "'set' property of WeakMap");
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return {};
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}
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get_iterator_values(global_object(), vm.argument(0), [&](Value iterator_value) {
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if (vm.exception())
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return IterationDecision::Break;
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if (!iterator_value.is_object()) {
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vm.throw_exception<TypeError>(global_object(), ErrorType::NotAnObject, String::formatted("Iterator value {}", iterator_value.to_string_without_side_effects()));
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return IterationDecision::Break;
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}
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auto key = iterator_value.as_object().get(0);
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if (vm.exception())
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return IterationDecision::Break;
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auto value = iterator_value.as_object().get(1);
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if (vm.exception())
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return IterationDecision::Break;
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(void)vm.call(adder.as_function(), Value(weak_map), key, value);
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return vm.exception() ? IterationDecision::Break : IterationDecision::Continue;
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});
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if (vm.exception())
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return {};
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return weak_map;
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}
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}
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