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fd0c63b338
The proposed changes have been merged into the proposal with: https://github.com/tc39/proposal-shadowrealm/commit/f20d02
71 lines
2.6 KiB
C++
71 lines
2.6 KiB
C++
/*
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* Copyright (c) 2021-2023, Linus Groh <linusg@serenityos.org>
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* Copyright (c) 2024, Shannon Booth <shannon@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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GC_DEFINE_ALLOCATOR(ShadowRealmConstructor);
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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(realm.vm().names.ShadowRealm.as_string(), realm.intrinsics().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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Base::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.intrinsics().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>(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<GC::Ref<Object>> ShadowRealmConstructor::construct(FunctionObject& new_target)
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{
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auto& vm = this->vm();
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// 2. Let O be ? OrdinaryCreateFromConstructor(NewTarget, "%ShadowRealm.prototype%", « [[ShadowRealm]] »).
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auto object = TRY(ordinary_create_from_constructor<ShadowRealm>(vm, new_target, &Intrinsics::shadow_realm_prototype));
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// 3. Let callerContext be the running execution context.
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// 4. Perform ? InitializeHostDefinedRealm().
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// 5. Let innerContext be the running execution context.
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auto inner_context = TRY(Realm::initialize_host_defined_realm(vm, nullptr, nullptr));
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// 6. Remove innerContext from the execution context stack and restore callerContext as the running execution context.
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vm.pop_execution_context();
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// 7. Let realmRec be the Realm of innerContext.
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auto& realm_record = *inner_context->realm;
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// 8. Set O.[[ShadowRealm]] to realmRec.
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object->set_shadow_realm(realm_record);
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// 9. Perform ? HostInitializeShadowRealm(realmRec, innerContext, O).
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TRY(vm.host_initialize_shadow_realm(realm_record, move(inner_context), object));
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// 10. Return O.
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return object;
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}
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}
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