mirror of
https://github.com/LadybirdBrowser/ladybird.git
synced 2025-10-31 21:30:58 +00:00
f87041bf3a
Resulting in a massive rename across almost everywhere! Alongside the namespace change, we now have the following names: * JS::NonnullGCPtr -> GC::Ref * JS::GCPtr -> GC::Ptr * JS::HeapFunction -> GC::Function * JS::CellImpl -> GC::Cell * JS::Handle -> GC::Root
122 lines
4.1 KiB
C++
122 lines
4.1 KiB
C++
/*
|
|
* Copyright (c) 2021, Idan Horowitz <idan.horowitz@serenityos.org>
|
|
* Copyright (c) 2021-2023, Linus Groh <linusg@serenityos.org>
|
|
*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*/
|
|
|
|
#include <LibJS/Runtime/AbstractOperations.h>
|
|
#include <LibJS/Runtime/Array.h>
|
|
#include <LibJS/Runtime/Error.h>
|
|
#include <LibJS/Runtime/Iterator.h>
|
|
#include <LibJS/Runtime/Map.h>
|
|
#include <LibJS/Runtime/MapConstructor.h>
|
|
|
|
namespace JS {
|
|
|
|
GC_DEFINE_ALLOCATOR(MapConstructor);
|
|
|
|
MapConstructor::MapConstructor(Realm& realm)
|
|
: NativeFunction(realm.vm().names.Map.as_string(), realm.intrinsics().function_prototype())
|
|
{
|
|
}
|
|
|
|
void MapConstructor::initialize(Realm& realm)
|
|
{
|
|
auto& vm = this->vm();
|
|
Base::initialize(realm);
|
|
|
|
// 24.1.2.2 Map.prototype, https://tc39.es/ecma262/#sec-map.prototype
|
|
define_direct_property(vm.names.prototype, realm.intrinsics().map_prototype(), 0);
|
|
|
|
u8 attr = Attribute::Writable | Attribute::Configurable;
|
|
define_native_function(realm, vm.names.groupBy, group_by, 2, attr);
|
|
|
|
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<GC::Ref<Object>> MapConstructor::construct(FunctionObject& new_target)
|
|
{
|
|
auto& vm = this->vm();
|
|
|
|
auto map = TRY(ordinary_create_from_constructor<Map>(vm, new_target, &Intrinsics::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, ByteString::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;
|
|
}
|
|
|
|
// 24.1.2.1 Map.groupBy ( items, callbackfn ), https://tc39.es/ecma262/#sec-map.groupby
|
|
JS_DEFINE_NATIVE_FUNCTION(MapConstructor::group_by)
|
|
{
|
|
auto& realm = *vm.current_realm();
|
|
|
|
auto items = vm.argument(0);
|
|
auto callback_function = vm.argument(1);
|
|
|
|
struct KeyedGroupTraits : public Traits<GC::Root<Value>> {
|
|
static unsigned hash(GC::Root<Value> const& value_handle)
|
|
{
|
|
return ValueTraits::hash(value_handle.value());
|
|
}
|
|
|
|
static bool equals(GC::Root<Value> const& a, GC::Root<Value> const& b)
|
|
{
|
|
// AddValueToKeyedGroup uses SameValue on the keys on Step 1.a.
|
|
return same_value(a.value(), b.value());
|
|
}
|
|
};
|
|
|
|
// 1. Let groups be ? GroupBy(items, callbackfn, zero).
|
|
auto groups = TRY((JS::group_by<OrderedHashMap<GC::Root<Value>, GC::MarkedVector<Value>, KeyedGroupTraits>, void>(vm, items, callback_function)));
|
|
|
|
// 2. Let map be ! Construct(%Map%).
|
|
auto map = Map::create(realm);
|
|
|
|
// 3. For each Record { [[Key]], [[Elements]] } g of groups, do
|
|
for (auto& group : groups) {
|
|
// a. Let elements be CreateArrayFromList(g.[[Elements]]).
|
|
auto elements = Array::create_from(realm, group.value);
|
|
|
|
// b. Let entry be the Record { [[Key]]: g.[[Key]], [[Value]]: elements }.
|
|
// c. Append entry to map.[[MapData]].
|
|
map->map_set(group.key.value(), elements);
|
|
}
|
|
|
|
// 4. Return map.
|
|
return map;
|
|
}
|
|
|
|
// 24.1.2.3 get Map [ @@species ], https://tc39.es/ecma262/#sec-get-map-@@species
|
|
JS_DEFINE_NATIVE_FUNCTION(MapConstructor::symbol_species_getter)
|
|
{
|
|
return vm.this_value();
|
|
}
|
|
|
|
}
|