b7e5f08e56
To no one's surprise, this patch is pretty big - this is possibly the most used AO of all of them. Definitely worth it though.
91 lines
3.1 KiB
C++
91 lines
3.1 KiB
C++
/*
|
|
* 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(GlobalObject& global_object)
|
|
: NativeFunction(vm().names.Map.as_string(), *global_object.function_prototype())
|
|
{
|
|
}
|
|
|
|
void MapConstructor::initialize(GlobalObject& global_object)
|
|
{
|
|
auto& vm = this->vm();
|
|
NativeFunction::initialize(global_object);
|
|
|
|
// 24.1.2.1 Map.prototype, https://tc39.es/ecma262/#sec-map.prototype
|
|
define_direct_property(vm.names.prototype, global_object.map_prototype(), 0);
|
|
|
|
define_native_accessor(*vm.well_known_symbol_species(), symbol_species_getter, {}, Attribute::Configurable);
|
|
|
|
define_direct_property(vm.names.length, Value(0), Attribute::Configurable);
|
|
}
|
|
|
|
MapConstructor::~MapConstructor()
|
|
{
|
|
}
|
|
|
|
// 24.1.1.1 Map ( [ iterable ] ), https://tc39.es/ecma262/#sec-map-iterable
|
|
Value MapConstructor::call()
|
|
{
|
|
auto& vm = this->vm();
|
|
vm.throw_exception<TypeError>(global_object(), ErrorType::ConstructorWithoutNew, vm.names.Map);
|
|
return {};
|
|
}
|
|
|
|
// 24.1.1.1 Map ( [ iterable ] ), https://tc39.es/ecma262/#sec-map-iterable
|
|
Value MapConstructor::construct(FunctionObject& new_target)
|
|
{
|
|
auto& vm = this->vm();
|
|
auto& global_object = this->global_object();
|
|
|
|
auto* map = TRY_OR_DISCARD(ordinary_create_from_constructor<Map>(global_object, new_target, &GlobalObject::map_prototype));
|
|
|
|
if (vm.argument(0).is_nullish())
|
|
return map;
|
|
|
|
auto adder = TRY_OR_DISCARD(map->get(vm.names.set));
|
|
if (!adder.is_function()) {
|
|
vm.throw_exception<TypeError>(global_object, ErrorType::NotAFunction, "'set' property of Map");
|
|
return {};
|
|
}
|
|
get_iterator_values(global_object, vm.argument(0), [&](Value iterator_value) {
|
|
if (vm.exception())
|
|
return IterationDecision::Break;
|
|
if (!iterator_value.is_object()) {
|
|
vm.throw_exception<TypeError>(global_object, ErrorType::NotAnObject, String::formatted("Iterator value {}", iterator_value.to_string_without_side_effects()));
|
|
return IterationDecision::Break;
|
|
}
|
|
auto key_or_error = iterator_value.as_object().get(0);
|
|
if (key_or_error.is_error())
|
|
return IterationDecision::Break;
|
|
auto key = key_or_error.release_value();
|
|
auto value_or_error = iterator_value.as_object().get(1);
|
|
if (value_or_error.is_error())
|
|
return IterationDecision::Break;
|
|
auto value = value_or_error.release_value();
|
|
(void)vm.call(adder.as_function(), Value(map), key, value);
|
|
return vm.exception() ? IterationDecision::Break : IterationDecision::Continue;
|
|
});
|
|
if (vm.exception())
|
|
return {};
|
|
return map;
|
|
}
|
|
|
|
// 24.1.2.2 get Map [ @@species ], https://tc39.es/ecma262/#sec-get-map-@@species
|
|
JS_DEFINE_NATIVE_GETTER(MapConstructor::symbol_species_getter)
|
|
{
|
|
return vm.this_value(global_object);
|
|
}
|
|
|
|
}
|