5dd5896588
This is a continuation of the previous commit. Calling initialize() is the first thing that's done after allocating a cell on the JS heap - and in the common case of allocating an object, that's where properties are assigned and intrinsics occasionally accessed. Since those are supposed to live on the realm eventually, this is another step into that direction.
80 lines
3 KiB
C++
80 lines
3 KiB
C++
/*
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* Copyright (c) 2021, Linus Groh <linusg@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <LibJS/Runtime/AbstractOperations.h>
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#include <LibJS/Runtime/ShadowRealm.h>
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#include <LibJS/Runtime/ShadowRealmConstructor.h>
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namespace JS {
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// 3.2 The ShadowRealm Constructor, https://tc39.es/proposal-shadowrealm/#sec-shadowrealm-constructor
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ShadowRealmConstructor::ShadowRealmConstructor(Realm& realm)
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: NativeFunction(vm().names.ShadowRealm.as_string(), *realm.global_object().function_prototype())
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{
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}
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void ShadowRealmConstructor::initialize(Realm& realm)
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{
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auto& vm = this->vm();
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NativeFunction::initialize(realm);
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// 3.3.1 ShadowRealm.prototype, https://tc39.es/proposal-shadowrealm/#sec-shadowrealm.prototype
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define_direct_property(vm.names.prototype, realm.global_object().shadow_realm_prototype(), 0);
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define_direct_property(vm.names.length, Value(0), Attribute::Configurable);
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}
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// 3.2.1 ShadowRealm ( ), https://tc39.es/proposal-shadowrealm/#sec-shadowrealm
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ThrowCompletionOr<Value> ShadowRealmConstructor::call()
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{
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auto& vm = this->vm();
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// 1. If NewTarget is undefined, throw a TypeError exception.
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return vm.throw_completion<TypeError>(global_object(), ErrorType::ConstructorWithoutNew, vm.names.ShadowRealm);
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}
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// 3.2.1 ShadowRealm ( ), https://tc39.es/proposal-shadowrealm/#sec-shadowrealm
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ThrowCompletionOr<Object*> ShadowRealmConstructor::construct(FunctionObject& new_target)
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{
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auto& vm = this->vm();
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auto& global_object = this->global_object();
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// 3. Let realmRec be CreateRealm().
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auto* realm = Realm::create(vm);
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// 5. Let context be a new execution context.
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auto context = ExecutionContext { vm.heap() };
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// 6. Set the Function of context to null.
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context.function = nullptr;
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// 7. Set the Realm of context to realmRec.
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context.realm = realm;
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// 8. Set the ScriptOrModule of context to null.
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// Note: This is already the default value.
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// 2. Let O be ? OrdinaryCreateFromConstructor(NewTarget, "%ShadowRealm.prototype%", « [[ShadowRealm]], [[ExecutionContext]] »).
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// 4. Set O.[[ShadowRealm]] to realmRec.
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// 9. Set O.[[ExecutionContext]] to context.
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auto* object = TRY(ordinary_create_from_constructor<ShadowRealm>(global_object, new_target, &GlobalObject::shadow_realm_prototype, *realm, move(context)));
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// 10. Perform ? SetRealmGlobalObject(realmRec, undefined, undefined).
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auto* new_global_object = vm.heap().allocate_without_global_object<GlobalObject>(*realm);
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realm->set_global_object(new_global_object, nullptr);
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new_global_object->initialize_global_object();
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// TODO: I don't think we should have these exactly like this, that doesn't work well with how
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// we create global objects. Still, it should be possible to make a ShadowRealm with a
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// non-LibJS GlobalObject somehow.
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// 11. Perform ? SetDefaultGlobalBindings(O.[[ShadowRealm]]).
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// 12. Perform ? HostInitializeShadowRealm(O.[[ShadowRealm]]).
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// 13. Return O.
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return object;
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}
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}
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