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https://github.com/RGBCube/serenity
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45646eee43
Before this would assume that the element found in operator++ was still valid when dereferencing it in operator*. Since any code can have been run since that increment this is not always valid. To further simplify the logic of the iterator we no longer store the index in an optional.
93 lines
2 KiB
C++
93 lines
2 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/Map.h>
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namespace JS {
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Map* Map::create(GlobalObject& global_object)
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{
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return global_object.heap().allocate<Map>(global_object, *global_object.map_prototype());
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}
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Map::Map(Object& prototype)
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: Object(prototype)
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{
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}
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Map::~Map()
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{
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}
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// 24.1.3.1 Map.prototype.clear ( ), https://tc39.es/ecma262/#sec-map.prototype.clear
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void Map::map_clear()
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{
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m_keys.clear();
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m_entries.clear();
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}
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// 24.1.3.3 Map.prototype.delete ( key ), https://tc39.es/ecma262/#sec-map.prototype.delete
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bool Map::map_remove(Value const& key)
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{
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Optional<size_t> index;
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for (auto it = m_keys.begin(); !it.is_end(); ++it) {
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if (ValueTraits::equals(*it, key)) {
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index = it.key();
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break;
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}
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}
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if (!index.has_value())
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return false;
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m_keys.remove(*index);
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m_entries.remove(key);
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return true;
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}
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// 24.1.3.6 Map.prototype.get ( key ), https://tc39.es/ecma262/#sec-map.prototype.get
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Optional<Value> Map::map_get(Value const& key) const
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{
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if (auto it = m_entries.find(key); it != m_entries.end())
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return it->value;
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return {};
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}
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// 24.1.3.7 Map.prototype.has ( key ), https://tc39.es/ecma262/#sec-map.prototype.has
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bool Map::map_has(Value const& key) const
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{
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return m_entries.contains(key);
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}
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// 24.1.3.9 Map.prototype.set ( key, value ), https://tc39.es/ecma262/#sec-map.prototype.set
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void Map::map_set(Value const& key, Value value)
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{
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auto it = m_entries.find(key);
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if (it != m_entries.end()) {
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it->value = value;
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} else {
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auto index = m_next_insertion_id++;
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m_keys.insert(index, key);
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m_entries.set(key, value);
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}
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}
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size_t Map::map_size() const
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{
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return m_keys.size();
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}
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void Map::visit_edges(Cell::Visitor& visitor)
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{
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Base::visit_edges(visitor);
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for (auto& value : m_entries) {
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visitor.visit(value.key);
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visitor.visit(value.value);
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}
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}
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}
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