1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162636465666768697071727374757677787980 |
- /*
- * Copyright (c) 2021, Linus Groh <linusg@serenityos.org>
- *
- * SPDX-License-Identifier: BSD-2-Clause
- */
- #include <LibJS/Runtime/AbstractOperations.h>
- #include <LibJS/Runtime/ShadowRealm.h>
- #include <LibJS/Runtime/ShadowRealmConstructor.h>
- namespace JS {
- // 3.2 The ShadowRealm Constructor, https://tc39.es/proposal-shadowrealm/#sec-shadowrealm-constructor
- ShadowRealmConstructor::ShadowRealmConstructor(GlobalObject& global_object)
- : NativeFunction(vm().names.ShadowRealm.as_string(), *global_object.function_prototype())
- {
- }
- void ShadowRealmConstructor::initialize(GlobalObject& global_object)
- {
- auto& vm = this->vm();
- NativeFunction::initialize(global_object);
- // 3.3.1 ShadowRealm.prototype, https://tc39.es/proposal-shadowrealm/#sec-shadowrealm.prototype
- define_direct_property(vm.names.prototype, global_object.shadow_realm_prototype(), 0);
- define_direct_property(vm.names.length, Value(0), Attribute::Configurable);
- }
- // 3.2.1 ShadowRealm ( ), https://tc39.es/proposal-shadowrealm/#sec-shadowrealm
- ThrowCompletionOr<Value> ShadowRealmConstructor::call()
- {
- auto& vm = this->vm();
- // 1. If NewTarget is undefined, throw a TypeError exception.
- return vm.throw_completion<TypeError>(global_object(), ErrorType::ConstructorWithoutNew, vm.names.ShadowRealm);
- }
- // 3.2.1 ShadowRealm ( ), https://tc39.es/proposal-shadowrealm/#sec-shadowrealm
- ThrowCompletionOr<Object*> ShadowRealmConstructor::construct(FunctionObject& new_target)
- {
- auto& vm = this->vm();
- auto& global_object = this->global_object();
- // 3. Let realmRec be CreateRealm().
- auto* realm = Realm::create(vm);
- // 5. Let context be a new execution context.
- auto context = ExecutionContext { vm.heap() };
- // 6. Set the Function of context to null.
- context.function = nullptr;
- // 7. Set the Realm of context to realmRec.
- context.realm = realm;
- // 8. Set the ScriptOrModule of context to null.
- // FIXME: Our execution context struct currently does not track this item.
- // 2. Let O be ? OrdinaryCreateFromConstructor(NewTarget, "%ShadowRealm.prototype%", « [[ShadowRealm]], [[ExecutionContext]] »).
- // 4. Set O.[[ShadowRealm]] to realmRec.
- // 9. Set O.[[ExecutionContext]] to context.
- auto* object = TRY(ordinary_create_from_constructor<ShadowRealm>(global_object, new_target, &GlobalObject::shadow_realm_prototype, *realm, move(context)));
- // 10. Perform ? SetRealmGlobalObject(realmRec, undefined, undefined).
- auto* new_global_object = vm.heap().allocate_without_global_object<GlobalObject>();
- new_global_object->initialize_global_object();
- realm->set_global_object(*new_global_object, nullptr);
- // TODO: I don't think we should have these exactly like this, that doesn't work well with how
- // we create global objects. Still, it should be possible to make a ShadowRealm with a
- // non-LibJS GlobalObject somehow.
- // 11. Perform ? SetDefaultGlobalBindings(O.[[ShadowRealm]]).
- // 12. Perform ? HostInitializeShadowRealm(O.[[ShadowRealm]]).
- // 13. Return O.
- return object;
- }
- }
|