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LibJS: Move intrinsics to the realm
Intrinsics, i.e. mostly constructor and prototype objects, but also things like empty and new object shape now live on a new heap-allocated JS::Intrinsics object, thus completing the long journey of taking all the magic away from the global object. This represents the Realm's [[Intrinsics]] slot in the spec and matches its existing [[GlobalObject]] / [[GlobalEnv]] slots in terms of architecture. In the majority of cases it should now be possibly to fully allocate a regular object without the global object existing, and in fact that's what we do now - the realm is allocated before the global object, and the intrinsics between both :^)
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@ -17,7 +17,18 @@ namespace JS {
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// 9.3.1 CreateRealm ( ), https://tc39.es/ecma262/#sec-createrealm
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Realm* Realm::create(VM& vm)
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{
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return vm.heap().allocate_without_realm<Realm>();
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// 1. Let realmRec be a new Realm Record.
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auto* realm = vm.heap().allocate_without_realm<Realm>();
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// 2. Perform CreateIntrinsics(realmRec).
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Intrinsics::create(*realm);
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// 3. Set realmRec.[[GlobalObject]] to undefined.
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// 4. Set realmRec.[[GlobalEnv]] to undefined.
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// 5. Set realmRec.[[TemplateMap]] to a new empty List.
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// 6. Return realmRec.
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return realm;
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}
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// 9.6 InitializeHostDefinedRealm ( ), https://tc39.es/ecma262/#sec-initializehostdefinedrealm
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@ -107,6 +118,7 @@ void Realm::set_global_object(GlobalObject* global_object, GlobalObject* this_va
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void Realm::visit_edges(Visitor& visitor)
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{
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visitor.visit(m_intrinsics);
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visitor.visit(m_global_object);
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visitor.visit(m_global_environment);
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}
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