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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/Map.h>
#include <LibJS/Runtime/MapConstructor.h>
namespace JS {
MapConstructor::MapConstructor(Realm& realm)
: NativeFunction(vm().names.Map.as_string(), *realm.global_object().function_prototype())
{
}
void MapConstructor::initialize(Realm& realm)
{
auto& vm = this->vm();
NativeFunction::initialize(realm);
// 24.1.2.1 Map.prototype, https://tc39.es/ecma262/#sec-map.prototype
define_direct_property(vm.names.prototype, realm.global_object().map_prototype(), 0);
define_native_accessor(realm, *vm.well_known_symbol_species(), symbol_species_getter, {}, Attribute::Configurable);
define_direct_property(vm.names.length, Value(0), Attribute::Configurable);
}
// 24.1.1.1 Map ( [ iterable ] ), https://tc39.es/ecma262/#sec-map-iterable
ThrowCompletionOr<Value> MapConstructor::call()
{
auto& vm = this->vm();
return vm.throw_completion<TypeError>(ErrorType::ConstructorWithoutNew, vm.names.Map);
}
// 24.1.1.1 Map ( [ iterable ] ), https://tc39.es/ecma262/#sec-map-iterable
ThrowCompletionOr<Object*> MapConstructor::construct(FunctionObject& new_target)
{
auto& vm = this->vm();
auto* map = TRY(ordinary_create_from_constructor<Map>(vm, new_target, &GlobalObject::map_prototype));
if (vm.argument(0).is_nullish())
return map;
auto adder = TRY(map->get(vm.names.set));
if (!adder.is_function())
return vm.throw_completion<TypeError>(ErrorType::NotAFunction, "'set' property of Map");
(void)TRY(get_iterator_values(vm, vm.argument(0), [&](Value iterator_value) -> Optional<Completion> {
if (!iterator_value.is_object())
return vm.throw_completion<TypeError>(ErrorType::NotAnObject, String::formatted("Iterator value {}", iterator_value.to_string_without_side_effects()));
auto key = TRY(iterator_value.as_object().get(0));
auto value = TRY(iterator_value.as_object().get(1));
TRY(JS::call(vm, adder.as_function(), map, key, value));
return {};
}));
return map;
}
// 24.1.2.2 get Map [ @@species ], https://tc39.es/ecma262/#sec-get-map-@@species
JS_DEFINE_NATIVE_FUNCTION(MapConstructor::symbol_species_getter)
{
return vm.this_value();
}
}
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