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/*
* Copyright (c) 2021, Idan Horowitz <idan.horowitz@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <LibJS/Runtime/Map.h>
namespace JS {
NonnullGCPtr<Map> Map::create(Realm& realm)
{
return *realm.heap().allocate<Map>(realm, *realm.intrinsics().map_prototype());
}
Map::Map(Object& prototype)
: Object(ConstructWithPrototypeTag::Tag, prototype)
{
}
// 24.1.3.1 Map.prototype.clear ( ), https://tc39.es/ecma262/#sec-map.prototype.clear
void Map::map_clear()
{
m_keys.clear();
m_entries.clear();
}
// 24.1.3.3 Map.prototype.delete ( key ), https://tc39.es/ecma262/#sec-map.prototype.delete
bool Map::map_remove(Value const& key)
{
Optional<size_t> index;
for (auto it = m_keys.begin(); !it.is_end(); ++it) {
if (ValueTraits::equals(*it, key)) {
index = it.key();
break;
}
}
if (!index.has_value())
return false;
m_keys.remove(*index);
m_entries.remove(key);
return true;
}
// 24.1.3.6 Map.prototype.get ( key ), https://tc39.es/ecma262/#sec-map.prototype.get
Optional<Value> Map::map_get(Value const& key) const
{
if (auto it = m_entries.find(key); it != m_entries.end())
return it->value;
return {};
}
// 24.1.3.7 Map.prototype.has ( key ), https://tc39.es/ecma262/#sec-map.prototype.has
bool Map::map_has(Value const& key) const
{
return m_entries.contains(key);
}
// 24.1.3.9 Map.prototype.set ( key, value ), https://tc39.es/ecma262/#sec-map.prototype.set
void Map::map_set(Value const& key, Value value)
{
auto it = m_entries.find(key);
if (it != m_entries.end()) {
it->value = value;
} else {
auto index = m_next_insertion_id++;
m_keys.insert(index, key);
m_entries.set(key, value);
}
}
size_t Map::map_size() const
{
return m_keys.size();
}
void Map::visit_edges(Cell::Visitor& visitor)
{
Base::visit_edges(visitor);
for (auto& value : m_entries) {
visitor.visit(value.key);
visitor.visit(value.value);
}
}
}
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